Other: Bridge Perth Narrows v3.0.8

Do not treat unknown label creation/deletion/update or deletion in Bridge
as an error as the Gluon cache still needs to receive these events to
correct its internal state.

.gitignore

@@ -6,6 +6,7 @@
 .*.sw?
 *~
 .idea
+.vscode
 
 # Test files
 godog.test

.gitlab-ci.yml

@@ -16,30 +16,19 @@
 # along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
 
 ---
-image: gitlab.protontech.ch:4567/go/bridge-internal:go18
+image: harbor.protontech.ch/docker.io/library/golang:1.18
+
+variables:
+  GOPRIVATE: gitlab.protontech.ch
+  GOMAXPROCS: $(( ${CI_TAG_CPU} / 2 ))
 
 before_script:
-  - eval $(ssh-agent -s)
-  - echo "$SSH_PRIVATE_KEY" | tr -d '\r' | ssh-add - > /dev/null
-  - mkdir -p .cache/bin
-  - export PATH=$(pwd)/.cache/bin:$PATH
-  - export GOPATH="$CI_PROJECT_DIR/.cache"
-  - make install-dev-dependencies
-  - git checkout .
-
-cache:
-  key: go18-mod
-  paths:
-    - .cache
-  policy: pull
+  - apt update && apt-get -y install libsecret-1-dev
+  - git config --global url.https://gitlab-ci-token:${CI_JOB_TOKEN}@${CI_SERVER_HOST}.insteadOf https://${CI_SERVER_HOST}
 
 stages:
-  - cache
   - test
   - build
-  - check
-  - mirror
-
 
 .rules-branch-and-MR-always:
   rules:
@@ -65,20 +54,16 @@ stages:
       allow_failure: true
     - when: never
 
-# Stage: CACHE
+.rules-branch-manual-MR-always-allow-failure:
+  rules:
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+      when: always
+      allow_failure: true
+    - if: $CI_COMMIT_BRANCH
+      when: manual
+      allow_failure: true
+    - when: never
 
-# This will ensure latest dependency versions and updates the cache for
-# all other following jobs which only pull the cache.
-cache-push:
-  stage: cache
-  extends:
-    - .rules-branch-and-MR-always
-  script:
-    - echo ""
-  cache:
-    key: go18-mod
-    paths:
-      - .cache
 
 # Stage: TEST
 
@@ -86,12 +71,8 @@ lint:
   stage: test
   extends:
     - .rules-branch-and-MR-always
-  before_script:
-    - mkdir -p .cache/bin
-    - export PATH=$(pwd)/.cache/bin:$PATH
-    - export GOPATH="$CI_PROJECT_DIR/.cache"
   script:
-    - env GOMAXPROCS=$(( ${CI_TAG_CPU} / 2 )) make lint
+    - make lint
   tags:
     - medium
 
@@ -100,33 +81,34 @@ test-linux:
   extends:
     - .rules-branch-manual-MR-always
   script:
-    - apt-get -y install pass gnupg rng-tools
-    # First have enough of entropy (cat /proc/sys/kernel/random/entropy_avail).
-    - rngd -r /dev/urandom
-    # Generate GPG key without password for the password manager.
-    - gpg --batch --yes --passphrase '' --quick-generate-key 'tester@example.com'
-    # Use the last created GPG ID for the password manager.
-    - pass init `gpg --list-keys | grep "^   " | tail -1 | tr -d '[:space:]'`
-    # Then finally run the tests
     - make test
   tags:
     - medium
 
-test-windows:
-  extends:
-    - .build-windows-base
-    - .rules-branch-and-MR-always
+test-linux-race:
   stage: test
-  needs: []
+  extends:
+    - .rules-branch-manual-MR-always-allow-failure
   script:
-    - make test
+    - make test-race
+  tags:
+    - medium
 
 test-integration:
   stage: test
   extends:
     - .rules-branch-manual-MR-always
   script:
-    - VERBOSITY=debug make -C test test
+    - make test-integration
+  tags:
+    - large
+
+test-integration-race:
+  stage: test
+  extends:
+    - .rules-branch-manual-MR-always-allow-failure
+  script:
+    - make test-integration-race
   tags:
     - large
 
@@ -154,9 +136,12 @@ dependency-updates:
     - export PATH=$(pwd)/.cache/bin:$PATH
     - export GOPATH="$CI_PROJECT_DIR/.cache"
     - export PATH=$PATH:$QT6DIR/bin
+    - $(git config --global -l | grep -o 'url.*gitlab.protontech.ch.*insteadof' | xargs -L 1 git config --global --unset &> /dev/null) || echo "nothing to remove"
+    - git config --global url.https://gitlab-ci-token:${CI_JOB_TOKEN}@${CI_SERVER_HOST}.insteadOf https://${CI_SERVER_HOST}
   script:
     - make build
     - git diff && git diff-index --quiet HEAD
+    - make vault-editor
   artifacts:
     # Note: The latest artifacts for refs are locked against deletion, and kept
     # regardless of the expiry time. Introduced in GitLab 13.0 behind a
@@ -165,6 +150,7 @@ dependency-updates:
     when: always
     paths:
       - bridge_*.tgz
+      - vault-editor
   tags:
     - large
 
@@ -200,10 +186,13 @@ build-linux-qa:
     - export GOPATH=~/go
     - export PATH=$GOPATH/bin:$PATH
     - export CGO_CPPFLAGS='-Wno-error -Wno-nullability-completeness -Wno-expansion-to-defined -Wno-builtin-requires-header'
+    - $(git config --global -l | grep -o 'url.*gitlab.protontech.ch.*insteadof' | xargs -L 1 git config --global --unset &> /dev/null) || echo "nothing to remove"
+    - git config --global url.https://gitlab-ci-token:${CI_JOB_TOKEN}@${CI_SERVER_HOST}.insteadOf https://${CI_SERVER_HOST}
   script:
     - go version
-    - make build
+    - make build-nogui
     - git diff && git diff-index --quiet HEAD
+    - make vault-editor
   cache: {}
   tags:
     - macOS
@@ -234,9 +223,12 @@ build-darwin-qa:
     - export QT6DIR=/c/grrrQt/6.3.1/msvc2019_64
     - export PATH=$PATH:${QT6DIR}/bin
     - export PATH="/c/Program Files/Microsoft Visual Studio/2022/Community/Common7/IDE/CommonExtensions/Microsoft/CMake/CMake/bin:$PATH"
+    - $(git config --global -l | grep -o 'url.*gitlab.protontech.ch.*insteadof' | xargs -L 1 git config --global --unset &> /dev/null) || echo "nothing to remove"
+    - git config --global url.https://gitlab-ci-token:${CI_JOB_TOKEN}@${CI_SERVER_HOST}.insteadOf https://${CI_SERVER_HOST}
   script:
-    - make build
+    - make build-nogui
     - git diff && git diff-index --quiet HEAD
+    - make vault-editor
   tags:
     - windows-bridge
 
@@ -252,59 +244,4 @@ build-windows-qa:
   artifacts:
     name: "bridge-windows-qa-$CI_COMMIT_SHORT_SHA"
 
-# Stage: CHECK
-
-check-gobinsec:
-  stage: check
-  needs: ["build-linux-qa"]
-  extends:
-    - .rules-branch-manual-MR-always
-  cache:
-    key: gobinsec-cache-v3
-    paths:
-      - ./gobinsec-cache-valid.yml
-    policy: pull-push
-  before_script:
-    - mkdir build
-    - tar -xzf bridge_linux_*.tgz -C build
-    - "[ ! -f ./gobinsec-cache-valid.yml ] && wget bridgeteam.protontech.ch/bridgeteam/gobinsec-cache-valid.yml"
-    - mv ./gobinsec-cache-valid.yml ./utils/gobinsec_update/gobinsec-cache-valid.yml
-  script:
-    - ./utils/gobinsec_update.sh
-    - cp ./utils/gobinsec_update/gobinsec-cache-valid.yml ./gobinsec-cache.yml
-    - cat ./gobinsec-cache.yml
-    - gobinsec -wait -cache -config utils/gobinsec_conf.yml build/bridge
-    - cp ./gobinsec-cache.yml ./gobinsec-cache-valid.yml   # Only update cache file if gobinsec succeeds
-
-
-
-# Stage: MIRROR
-
-mirror-repo:
-  stage: mirror
-  only:
-    refs:
-      - master
-  script:
-    - |
-      cat <<EOF > ~/.ssh/config
-      Host github.com
-          Hostname ssh.github.com
-          User git
-          Port 443
-          ProxyCommand connect-proxy -H $http_proxy %h %p
-      EOF
-    - ssh-keyscan -t rsa ${CI_SERVER_HOST} > ~/.ssh/known_hosts
-    - |
-      cat <<EOF >> ~/.ssh/known_hosts
-      # ssh.github.com:443 SSH-2.0-babeld-2e9d163d
-      [ssh.github.com]:443 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==
-      EOF
-    - echo "$mirror_key" | tr -d '\r' | ssh-add - > /dev/null
-    - ssh-add -l
-    - git clone "$CI_REPOSITORY_URL" --branch master _REPO_CLONE;
-    - cd _REPO_CLONE
-    - git remote add public $mirror_url
-    - git push public master
-    # Pushing the latest tag from master history
-    - git push public "$(git describe --tags --abbrev=0 || echo master)"
+# TODO: PUT BACK ALL THE JOBS! JUST DID THIS FOR NOW TO GET CI WORKING AGAIN...

.golangci.yml

@@ -15,6 +15,9 @@ issues:
     - at least one file in a package should have a package comment
     # Package comments.
     - "package-comments: should have a package comment"
+    # Migration uses underscores to make versions clearer.
+    - "var-naming: don't use underscores in Go names"
+    - "ST1003: should not use underscores in Go names"
 
   exclude-rules:
     - path: _test\.go
@@ -24,6 +27,17 @@ issues:
         - gochecknoglobals
         - gochecknoinits
         - gosec
+        - goconst
+        - dogsled
+    - path: test
+      linters:
+        - dupl
+        - funlen
+        - gochecknoglobals
+        - gochecknoinits
+        - gosec
+        - goconst
+        - dogsled
 
 linters-settings:
   godox:

COPYING_NOTES.md

@@ -23,12 +23,10 @@ Proton Mail Bridge includes the following 3rd party software:
 <!-- START AUTOGEN -->
 * [notificator](https://github.com/0xAX/notificator) available under [license](https://github.com/0xAX/notificator/blob/master/LICENSE) 
 * [semver](https://github.com/Masterminds/semver/v3) available under [license](https://github.com/Masterminds/semver/v3/blob/master/LICENSE) 
+* [gluon](https://github.com/ProtonMail/gluon) available under [license](https://github.com/ProtonMail/gluon/blob/master/LICENSE) 
 * [go-autostart](https://github.com/ProtonMail/go-autostart) available under [license](https://github.com/ProtonMail/go-autostart/blob/master/LICENSE) 
-* [go-crypto](https://github.com/ProtonMail/go-crypto) available under [license](https://github.com/ProtonMail/go-crypto/blob/master/LICENSE) 
-* [go-imap-id](https://github.com/ProtonMail/go-imap-id) available under [license](https://github.com/ProtonMail/go-imap-id/blob/master/LICENSE) 
+* [go-proton-api](https://github.com/ProtonMail/go-proton-api) available under [license](https://github.com/ProtonMail/go-proton-api/blob/master/LICENSE) 
 * [go-rfc5322](https://github.com/ProtonMail/go-rfc5322) available under [license](https://github.com/ProtonMail/go-rfc5322/blob/master/LICENSE) 
-* [go-srp](https://github.com/ProtonMail/go-srp) available under [license](https://github.com/ProtonMail/go-srp/blob/master/LICENSE) 
-* [go-vcard](https://github.com/ProtonMail/go-vcard) available under [license](https://github.com/ProtonMail/go-vcard/blob/master/LICENSE) 
 * [gopenpgp](https://github.com/ProtonMail/gopenpgp/v2) available under [license](https://github.com/ProtonMail/gopenpgp/v2/blob/master/LICENSE) 
 * [goquery](https://github.com/PuerkitoBio/goquery) available under [license](https://github.com/PuerkitoBio/goquery/blob/master/LICENSE) 
 * [ishell](https://github.com/abiosoft/ishell) available under [license](https://github.com/abiosoft/ishell/blob/master/LICENSE) 
@@ -39,17 +37,14 @@ Proton Mail Bridge includes the following 3rd party software:
 * [docker-credential-helpers](https://github.com/docker/docker-credential-helpers) available under [license](https://github.com/docker/docker-credential-helpers/blob/master/LICENSE) 
 * [go-sysinfo](https://github.com/elastic/go-sysinfo) available under [license](https://github.com/elastic/go-sysinfo/blob/master/LICENSE) 
 * [go-imap](https://github.com/emersion/go-imap) available under [license](https://github.com/emersion/go-imap/blob/master/LICENSE) 
-* [go-imap-appendlimit](https://github.com/emersion/go-imap-appendlimit) available under [license](https://github.com/emersion/go-imap-appendlimit/blob/master/LICENSE) 
-* [go-imap-move](https://github.com/emersion/go-imap-move) available under [license](https://github.com/emersion/go-imap-move/blob/master/LICENSE) 
-* [go-imap-quota](https://github.com/emersion/go-imap-quota) available under [license](https://github.com/emersion/go-imap-quota/blob/master/LICENSE) 
-* [go-imap-unselect](https://github.com/emersion/go-imap-unselect) available under [license](https://github.com/emersion/go-imap-unselect/blob/master/LICENSE) 
+* [go-imap-id](https://github.com/emersion/go-imap-id) available under [license](https://github.com/emersion/go-imap-id/blob/master/LICENSE) 
 * [go-message](https://github.com/emersion/go-message) available under [license](https://github.com/emersion/go-message/blob/master/LICENSE) 
 * [go-sasl](https://github.com/emersion/go-sasl) available under [license](https://github.com/emersion/go-sasl/blob/master/LICENSE) 
 * [go-smtp](https://github.com/emersion/go-smtp) available under [license](https://github.com/emersion/go-smtp/blob/master/LICENSE) 
-* [go-textwrapper](https://github.com/emersion/go-textwrapper) available under [license](https://github.com/emersion/go-textwrapper/blob/master/LICENSE) 
 * [color](https://github.com/fatih/color) available under [license](https://github.com/fatih/color/blob/master/LICENSE) 
 * [sentry-go](https://github.com/getsentry/sentry-go) available under [license](https://github.com/getsentry/sentry-go/blob/master/LICENSE) 
 * [resty](https://github.com/go-resty/resty/v2) available under [license](https://github.com/go-resty/resty/v2/blob/master/LICENSE) 
+* [go-json](https://github.com/goccy/go-json) available under [license](https://github.com/goccy/go-json/blob/master/LICENSE) 
 * [dbus](https://github.com/godbus/dbus) available under [license](https://github.com/godbus/dbus/blob/master/LICENSE) 
 * [mock](https://github.com/golang/mock) available under [license](https://github.com/golang/mock/blob/master/LICENSE) 
 * [go-cmp](https://github.com/google/go-cmp) available under [license](https://github.com/google/go-cmp/blob/master/LICENSE) 
@@ -57,16 +52,14 @@ Proton Mail Bridge includes the following 3rd party software:
 * [go-multierror](https://github.com/hashicorp/go-multierror) available under [license](https://github.com/hashicorp/go-multierror/blob/master/LICENSE) 
 * [html2text](https://github.com/jaytaylor/html2text) available under [license](https://github.com/jaytaylor/html2text/blob/master/LICENSE) 
 * [go-keychain](https://github.com/keybase/go-keychain) available under [license](https://github.com/keybase/go-keychain/blob/master/LICENSE) 
-* [aurora](https://github.com/logrusorgru/aurora) available under [license](https://github.com/logrusorgru/aurora/blob/master/LICENSE) 
 * [dns](https://github.com/miekg/dns) available under [license](https://github.com/miekg/dns/blob/master/LICENSE) 
-* [jsondiff](https://github.com/nsf/jsondiff) available under [license](https://github.com/nsf/jsondiff/blob/master/LICENSE) 
 * [errors](https://github.com/pkg/errors) available under [license](https://github.com/pkg/errors/blob/master/LICENSE) 
-* [du](https://github.com/ricochet2200/go-disk-usage/du) available under [license](https://github.com/ricochet2200/go-disk-usage/du/blob/master/LICENSE) 
+* [profile](https://github.com/pkg/profile) available under [license](https://github.com/pkg/profile/blob/master/LICENSE) 
 * [logrus](https://github.com/sirupsen/logrus) available under [license](https://github.com/sirupsen/logrus/blob/master/LICENSE) 
 * [testify](https://github.com/stretchr/testify) available under [license](https://github.com/stretchr/testify/blob/master/LICENSE) 
 * [cli](https://github.com/urfave/cli/v2) available under [license](https://github.com/urfave/cli/v2/blob/master/LICENSE) 
 * [msgpack](https://github.com/vmihailenco/msgpack/v5) available under [license](https://github.com/vmihailenco/msgpack/v5/blob/master/LICENSE) 
-* [bbolt](https://go.etcd.io/bbolt) available under [license](https://github.com/etcd-io/bbolt/blob/master/LICENSE) 
+* [goleak](https://go.uber.org/goleak)
 * [exp](https://golang.org/x/exp) available under [license](https://cs.opensource.google/go/x/exp/+/master:LICENSE) 
 * [net](https://golang.org/x/net) available under [license](https://cs.opensource.google/go/x/net/+/master:LICENSE) 
 * [sys](https://golang.org/x/sys) available under [license](https://cs.opensource.google/go/x/sys/+/master:LICENSE) 
@@ -74,11 +67,17 @@ Proton Mail Bridge includes the following 3rd party software:
 * [grpc](https://google.golang.org/grpc) available under [license](https://github.com/grpc/grpc-go/blob/master/LICENSE) 
 * [protobuf](https://google.golang.org/protobuf) available under [license](https://github.com/protocolbuffers/protobuf/blob/main/LICENSE) 
 * [plist](https://howett.net/plist) available under [license](https://github.com/DHowett/go-plist/blob/main/LICENSE) 
+* [atlas](https://ariga.io/atlas)
+* [ent](https://entgo.io/ent)
 * [bcrypt](https://github.com/ProtonMail/bcrypt) available under [license](https://github.com/ProtonMail/bcrypt/blob/master/LICENSE) 
+* [go-crypto](https://github.com/ProtonMail/go-crypto) available under [license](https://github.com/ProtonMail/go-crypto/blob/master/LICENSE) 
 * [go-mime](https://github.com/ProtonMail/go-mime) available under [license](https://github.com/ProtonMail/go-mime/blob/master/LICENSE) 
+* [go-srp](https://github.com/ProtonMail/go-srp) available under [license](https://github.com/ProtonMail/go-srp/blob/master/LICENSE) 
 * [readline](https://github.com/abiosoft/readline) available under [license](https://github.com/abiosoft/readline/blob/master/LICENSE) 
+* [levenshtein](https://github.com/agext/levenshtein) available under [license](https://github.com/agext/levenshtein/blob/master/LICENSE) 
 * [cascadia](https://github.com/andybalholm/cascadia) available under [license](https://github.com/andybalholm/cascadia/blob/master/LICENSE) 
 * [antlr](https://github.com/antlr/antlr4/runtime/Go/antlr) available under [license](https://github.com/antlr/antlr4/runtime/Go/antlr/blob/master/LICENSE) 
+* [go-textseg](https://github.com/apparentlymart/go-textseg/v13) available under [license](https://github.com/apparentlymart/go-textseg/v13/blob/master/LICENSE) 
 * [test](https://github.com/chzyer/test) available under [license](https://github.com/chzyer/test/blob/master/LICENSE) 
 * [circl](https://github.com/cloudflare/circl) available under [license](https://github.com/cloudflare/circl/blob/master/LICENSE) 
 * [go-md2man](https://github.com/cpuguy83/go-md2man/v2) available under [license](https://github.com/cpuguy83/go-md2man/v2/blob/master/LICENSE) 
@@ -87,31 +86,50 @@ Proton Mail Bridge includes the following 3rd party software:
 * [wincred](https://github.com/danieljoos/wincred) available under [license](https://github.com/danieljoos/wincred/blob/master/LICENSE) 
 * [go-spew](https://github.com/davecgh/go-spew) available under [license](https://github.com/davecgh/go-spew/blob/master/LICENSE) 
 * [go-windows](https://github.com/elastic/go-windows) available under [license](https://github.com/elastic/go-windows/blob/master/LICENSE) 
+* [go-textwrapper](https://github.com/emersion/go-textwrapper) available under [license](https://github.com/emersion/go-textwrapper/blob/master/LICENSE) 
 * [go-vcard](https://github.com/emersion/go-vcard) available under [license](https://github.com/emersion/go-vcard/blob/master/LICENSE) 
 * [go-shlex](https://github.com/flynn-archive/go-shlex) available under [license](https://github.com/flynn-archive/go-shlex/blob/master/LICENSE) 
+* [sse](https://github.com/gin-contrib/sse) available under [license](https://github.com/gin-contrib/sse/blob/master/LICENSE) 
+* [gin](https://github.com/gin-gonic/gin) available under [license](https://github.com/gin-gonic/gin/blob/master/LICENSE) 
+* [inflect](https://github.com/go-openapi/inflect) available under [license](https://github.com/go-openapi/inflect/blob/master/LICENSE) 
+* [locales](https://github.com/go-playground/locales) available under [license](https://github.com/go-playground/locales/blob/master/LICENSE) 
+* [universal-translator](https://github.com/go-playground/universal-translator) available under [license](https://github.com/go-playground/universal-translator/blob/master/LICENSE) 
+* [validator](https://github.com/go-playground/validator/v10) available under [license](https://github.com/go-playground/validator/v10/blob/master/LICENSE) 
 * [uuid](https://github.com/gofrs/uuid) available under [license](https://github.com/gofrs/uuid/blob/master/LICENSE) 
 * [protobuf](https://github.com/golang/protobuf) available under [license](https://github.com/golang/protobuf/blob/master/LICENSE) 
 * [errwrap](https://github.com/hashicorp/errwrap) available under [license](https://github.com/hashicorp/errwrap/blob/master/LICENSE) 
 * [go-immutable-radix](https://github.com/hashicorp/go-immutable-radix) available under [license](https://github.com/hashicorp/go-immutable-radix/blob/master/LICENSE) 
 * [go-memdb](https://github.com/hashicorp/go-memdb) available under [license](https://github.com/hashicorp/go-memdb/blob/master/LICENSE) 
 * [golang-lru](https://github.com/hashicorp/golang-lru) available under [license](https://github.com/hashicorp/golang-lru/blob/master/LICENSE) 
+* [hcl](https://github.com/hashicorp/hcl/v2) available under [license](https://github.com/hashicorp/hcl/v2/blob/master/LICENSE) 
 * [multierror](https://github.com/joeshaw/multierror) available under [license](https://github.com/joeshaw/multierror/blob/master/LICENSE) 
+* [go](https://github.com/json-iterator/go) available under [license](https://github.com/json-iterator/go/blob/master/LICENSE) 
+* [go-urn](https://github.com/leodido/go-urn) available under [license](https://github.com/leodido/go-urn/blob/master/LICENSE) 
 * [go-colorable](https://github.com/mattn/go-colorable) available under [license](https://github.com/mattn/go-colorable/blob/master/LICENSE) 
 * [go-isatty](https://github.com/mattn/go-isatty) available under [license](https://github.com/mattn/go-isatty/blob/master/LICENSE) 
 * [go-runewidth](https://github.com/mattn/go-runewidth) available under [license](https://github.com/mattn/go-runewidth/blob/master/LICENSE) 
+* [go-sqlite3](https://github.com/mattn/go-sqlite3) available under [license](https://github.com/mattn/go-sqlite3/blob/master/LICENSE) 
+* [go-wordwrap](https://github.com/mitchellh/go-wordwrap) available under [license](https://github.com/mitchellh/go-wordwrap/blob/master/LICENSE) 
+* [concurrent](https://github.com/modern-go/concurrent) available under [license](https://github.com/modern-go/concurrent/blob/master/LICENSE) 
+* [reflect2](https://github.com/modern-go/reflect2) available under [license](https://github.com/modern-go/reflect2/blob/master/LICENSE) 
 * [tablewriter](https://github.com/olekukonko/tablewriter) available under [license](https://github.com/olekukonko/tablewriter/blob/master/LICENSE) 
+* [go-toml](https://github.com/pelletier/go-toml/v2) available under [license](https://github.com/pelletier/go-toml/v2/blob/master/LICENSE) 
 * [go-difflib](https://github.com/pmezard/go-difflib) available under [license](https://github.com/pmezard/go-difflib/blob/master/LICENSE) 
 * [procfs](https://github.com/prometheus/procfs) available under [license](https://github.com/prometheus/procfs/blob/master/LICENSE) 
 * [uniseg](https://github.com/rivo/uniseg) available under [license](https://github.com/rivo/uniseg/blob/master/LICENSE) 
 * [blackfriday](https://github.com/russross/blackfriday/v2) available under [license](https://github.com/russross/blackfriday/v2/blob/master/LICENSE) 
 * [pflag](https://github.com/spf13/pflag) available under [license](https://github.com/spf13/pflag/blob/master/LICENSE) 
 * [bom](https://github.com/ssor/bom) available under [license](https://github.com/ssor/bom/blob/master/LICENSE) 
+* [codec](https://github.com/ugorji/go/codec) available under [license](https://github.com/ugorji/go/codec/blob/master/LICENSE) 
 * [tagparser](https://github.com/vmihailenco/tagparser/v2) available under [license](https://github.com/vmihailenco/tagparser/v2/blob/master/LICENSE) 
 * [smetrics](https://github.com/xrash/smetrics) available under [license](https://github.com/xrash/smetrics/blob/master/LICENSE) 
+* [go-cty](https://github.com/zclconf/go-cty) available under [license](https://github.com/zclconf/go-cty/blob/master/LICENSE) 
 * [crypto](https://golang.org/x/crypto) available under [license](https://cs.opensource.google/go/x/crypto/+/master:LICENSE) 
 * [mod](https://golang.org/x/mod) available under [license](https://cs.opensource.google/go/x/mod/+/master:LICENSE) 
+* [sync](https://golang.org/x/sync) available under [license](https://cs.opensource.google/go/x/sync/+/master:LICENSE) 
 * [tools](https://golang.org/x/tools) available under [license](https://cs.opensource.google/go/x/tools/+/master:LICENSE) 
 * [genproto](https://google.golang.org/genproto)
+gopkg.in/yaml.v2
 gopkg.in/yaml.v3
 * [docker-credential-helpers](https://github.com/ProtonMail/docker-credential-helpers) available under [license](https://github.com/ProtonMail/docker-credential-helpers/blob/master/LICENSE) 
 * [go-imap](https://github.com/ProtonMail/go-imap) available under [license](https://github.com/ProtonMail/go-imap/blob/master/LICENSE) 

Changelog.md

@@ -2,10 +2,223 @@
 
 Changelog [format](http://keepachangelog.com/en/1.0.0/)
 
+## [Bridge 3.0.8] Perth Narrows
+
+### Fixed
+* Other: Add sentry reports for event processing failures.
+* Other: Do not fail on label events.
+
+
+## [Bridge 3.0.7] Perth Narrows
+
+### Fixed
+* Other: Increase default UIDVALIDITY.
+* GODT-2173: fix: Migrate Bridge passwords from v2.X.
+* GODT-2207: Fix encoding of non utf7 mailbox names.
+* Other: Increase worker count (2 -> 4).
+
+
+## [Bridge 3.0.6] Perth Narrows
+
+### Fixed
+* GODT-2187: Skip messages during sync that fail to build/parse.
+
+
+## [Bridge 3.0.5] Perth Narrows
+
+### Fixed
+* GODT-2178: Bump go-proton-api to fix drafts.
+* GODT-2180: Allow login with FIDO2.
+
+
+## [Bridge 3.0.4] Perth Narrows
+
+### Changed
+* Other: Do not list \Deleted flag for All Mail.
+* Other: Disable perma-delete for expunge on Spam folder.
+
+### Fixed
+* Other: Ensure expunge feature test pushes to error stack.
+* GODT-2170: Use client-side draft update in integration tests.
+* GODT-2170: Improving test server behaviour.
+* GODT-2170: Update draft event means delete old and create new message.
+* GODT-2170: User create draft route: first steps.
+
+
+## [Bridge 3.0.3] Perth Narrows
+
+### Fixed
+* GPA v0.1.4: fix token expiration mechanism.
+
+## [Bridge 3.0.2] Perth Narrows
+
+### Changed
+* GODT-2157: Add Sentry to Bridge-Gui.
+* GODT-2153: Use file socket for bridge gRPC on linux & macOS.
+* GODT-2150: Do not forward --no-window flag.
+* GODT-2154: Allow noninteractive mode from launcher.
+* Other: update gui tester to support latest changes in gRPC implementation.
+* Other: GUI Tester supports the 3 states of user (Signed out/Locked/Connected).
+* Other: Bump gluon version to drop non-UTF-8 commands.
+
+### Fixed
+* Other: Wipe vault properly on factory reset.
+* GODT-2160: Prevent double closing of bridge if restart fails.
+* GODT-2041: Crash after factory reset.
+* GODT-2114: Sanitize attachment disposition.
+* GODT-1910: Fix GUI not being notified of SMTP SSL being turned on by ConfigureAppleMail.
+* GODT-1910: Fix save button state not being updated after being clicked once.
+* GODT-2159: Improve 429 retry.
+* GODT-1989: Handle Move with Append and Expunge.
+* Other: SetMailServerSettings is async as it should.
+* Other: Include sentry dll for Windows deploy.
+* Other: Ensure context is string in sentry reports.
+* GODT-2160: Ensure we can safely move cache file.
+
+
+## [Bridge 3.0.1] Perth Narrows
+
+### Changed
+* GODT-2151: Sync backwards to please product people.
+
+### Fixed
+* GODT-2149: Sort logs by timestamp when clearing.
+* GODT-2137: Set sentry sync transport.
+
+## [Bridge 3.0.0] Perth Narrows
+
+### Changed
+* Other(chore): Bump major version to v3.
+* Other: Switch from liteapi to go-proton-api.
+* GODT-2085: Ensure minimum sync worker count.
+* Other: Switch to mail-api.proton.me.
+* GODT-2120: Encrypt gluon store with gzip.
+* GODT-1910: Use a single view for IMAP & SMTP SSL options.
+* GODT-1846: Remove restart cues* implement restart-less behaviour. 
+* GODT-1975: Migrate keychain secrets.
+* GODT-1976: Migrate app settings from prefs.json.
+* GODT-2100: Load users in parallel at startup.
+* GODT-2108: Implement C++ Focus gRPC service client in bridge-gui.
+* GODT-2091: Animated "Connecting..." label.
+* GODT-2003: Introduces 3 phases user state (SignedOut/Locked/Connected).
+* GODT-2056: Kill old bridge from v2 lock file.
+* GODT-2086: Changing the wording for signing in.
+* GODT-2070: Implement SASL login for SMTP.
+* Other: Use liteapi instead of pmapi.
+* GODT-1609: Store password as byte array.
+* GODT-1650: Gluon integration.
+* GODT-1779: Remove go-imap.
+
+### Fixed
+* Other: Retry sync after cooldown if it fails.
+* GODT-2142: Also permit split by comma in References header.
+* GODT-2085: Use time.Since* structured logging.
+* GODT-2139: Validate key pass during login.
+* GODT-2111: Fix restart.
+* GODT-2085: Revise sync algorithm.
+* GODT-2134: Fix dock icon on macOS when launched with '--no-window'.
+* GODT-2131: If refresh token is revoked* user gets signed out.
+* GODT-2119: Only show supported label IDs to clients.
+* GODT-2002: Wait for API events to be applied after send.
+* GODT-2105: Ensure ClientVersion is set in bug report request.
+* GODT-2107: Update user list after session revoke.
+* GODT-2040: Bump UID validity when clearing sync status.
+* GODT-2045: Timeouts should be considered network issues.
+* GODT-2122: Handle check for updates failure.
+* GODT-2033: Only set user agent from IMAP ID if not empty.
+* GODT-2110: Force attachment disposition if content ID is missing.
+* GODT-2081: If keychain cannot be loaded do not wipe Vault and use a temp one.
+* GODT-2103: Trigger the version changed event.
+* GODT-2047: Clear last event ID when clearing sync status.
+* GODT-2109: Removed log message "Parent process XXX is still alive".
+* GODT-1913: Pass reporter to gluon* limit restarts* add crash handlers.
+* GODT-2037: Handle and log API refresh event.
+* GODT-2029: Handle deadlock when reordering user addresses.
+* GODT-2021: Remove gluon data when deleting user.
+* GODT-2030: Rework deletion check on expunge.
+* GODT-1977: Fix launcher for v2 to v3 updates.
+* GODT-2048: Add missing special use attributes.
+* GODT-2034: Basic vault migration ability (proof of concept).
+* GODT-1978: Auto-updates from v2 to v3.
+* GODT-1954: Draft message support.
+* GODT-2022: Fix change between address modes.
+* GODT-1993: Use more efficient filtering for message deletion.
+* GODT-2004: Ensure log files don't have color formatting.
+* GODT-2011: Use new app version format.
+* GODT-2010: Add better logging for app focus feature.
+* GODT-2008: Ensure user's addresses are returned in sorted order.
+* GODT-2002: Poll after SMTP send.
+* GODT-1982: Updated gRPC and GUI for disk cache.
+* GODT-1984: Handle permanent message deletion.
+* GODT-1916: Use XDG_DATA_HOME to store persistent data on linux.
+* GODT-1974: Store everything in v3 path.
+* GODT-1986: Handle case where an address has no decryption entities.
+* GODT-1777: Message de-duplication in SMTP and IMAP.
+* GODT-1940: Fix message encryption.
+* GODT-1742: Implement hide All Mail.
+* GODT-1813: Cleanup old go-imap cache files.
+* GODT-1650: Implement Connector.CreateMessage.
+* GODT-1901: Allow to set IMAP SSL from UI.
+* GODT-1816: Connect Gluon Logs to bridge Logs.
+* GODT-1657: Stable sync.
+* GODT-1815: Gluon User management error.
+
+## [Bridge 2.4.8] Osney
+
+### Fixed
+* GODT-2071: Fix --no-window flag that was broken on Windows.
+
+## [Bridge 2.4.7] Osney
+
+### Fixed
+* GODT-2078: Launcher inception.
+* GODT-2039: fix --parent-pid flag is removed from command-line when restarting the application.
+
+## [Bridge 2.4.6] Osney
+
+### Changed
+* GODT-2019: When signing out and a single user is connecte* we do not go back to the welcome screen.
+* GODT-2071: Bridge-gui report error if an orphan bridge is detected.
+* GODT-2046: Bridge-gui log is included in optional archive sent with bug reports.
+* GODT-2039: Bridge monitors bridge-gui via its PID.
+* GODT-2038: Interrupt gRPC initialisation of bridge process terminates.
+* Other: Added timestamp to bridge-gui logs.
+* GODT-2035: Bridge-gui log includes Qt version info.
+* GODT-2031: Updated bridge description.
+
+### Fixed
+* Other: Fix make run-qt target for Darwin.
+
+## [Bridge 2.4.5] Osney
+
+### Changed
+* GODT-2015: Bridge-gui logs to file until gRPC connection is established.
+* GODT-2016: Added more logging of gRPC events at info level.
+* GODT-2013: CLI flag for frontend is required.
+
+### Fixed
+* GODT-2020: Fix xdg_{home,cache}_home variables.
+* GODT-2014: Bridge quit if gRPC client ends stream.
+
+## [Bridge 2.4.4] Osney
+
+### Changed
+* GODT-1751: Switch from protonmail.com to proton.me domain.
+
+### Fixed
+* Other: Fix make run-cli for Darwin.
+* GODT-1645: Fix CI pipeline.
+* GODT-1938: Account details box values wrap.
+* Other: Also install vcpkg ARM64 on Intel mac hosts.
+* Other: Fix minor typo.
+* GODT-1939: removed vertical overshoot when scrolling.
+* GODT-1479: fix 'Open Bridge' button still hovered when status windows opens for Windows.
+* GODT-1519: Move back to account view after sending bug report.
+* Other: fix QML error with Qt 6.4 and a typo.
 
 ## [Bridge 2.4.3] Osney
 
-## Changed
+### Changed
 * Other: implemented tokens in bridge-gui-tester.
 * GODT-1853:
     * Upgrade dependencies (including x/crypto).
@@ -28,7 +241,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 
 
 
-## Fixed
+### Fixed
 * GUI issues:
     * GODT-1894: Fixed typo in alreadyLoggedIn event error message.
     * GODT-1479: Fix hover on “Open Bridge” in status window on macOS.

Makefile

@@ -11,7 +11,7 @@ ROOT_DIR:=$(shell dirname $(realpath $(firstword $(MAKEFILE_LIST))))
 .PHONY: build build-gui build-nogui build-launcher versioner hasher
 
 # Keep version hardcoded so app build works also without Git repository.
-BRIDGE_APP_VERSION?=2.4.3+git
+BRIDGE_APP_VERSION?=3.0.8+git
 APP_VERSION:=${BRIDGE_APP_VERSION}
 APP_FULL_NAME:=Proton Mail Bridge
 APP_VENDOR:=Proton AG
@@ -26,16 +26,16 @@ MACOS_MIN_VERSION=11.0
 BUILD_FLAGS:=-tags='${BUILD_TAGS}'
 BUILD_FLAGS_LAUNCHER:=${BUILD_FLAGS}
 BUILD_FLAGS_GUI:=-tags='${BUILD_TAGS} build_qt'
-GO_LDFLAGS:=$(addprefix -X github.com/ProtonMail/proton-bridge/v2/internal/constants., Version=${APP_VERSION} Revision=${REVISION} BuildTime=${BUILD_TIME})
-GO_LDFLAGS+=-X "github.com/ProtonMail/proton-bridge/v2/internal/constants.FullAppName=${APP_FULL_NAME}"
+GO_LDFLAGS:=$(addprefix -X github.com/ProtonMail/proton-bridge/v3/internal/constants., Version=${APP_VERSION} Revision=${REVISION} BuildTime=${BUILD_TIME})
+GO_LDFLAGS+=-X "github.com/ProtonMail/proton-bridge/v3/internal/constants.FullAppName=${APP_FULL_NAME}"
 
 ifneq "${BUILD_LDFLAGS}" ""
 	GO_LDFLAGS+=${BUILD_LDFLAGS}
 endif
 GO_LDFLAGS_LAUNCHER:=${GO_LDFLAGS}
 ifeq "${TARGET_OS}" "windows"
-	GO_LDFLAGS+=-H=windowsgui
-	GO_LDFLAGS_LAUNCHER+=-H=windowsgui
+	#GO_LDFLAGS+=-H=windowsgui # Disabled so we can inspect trace logs from the bridge for debugging.
+	GO_LDFLAGS_LAUNCHER+=-H=windowsgui # Having this flag prevent a temporary cmd.exe window from popping when starting the application on Windows 11.
 endif
 
 BUILD_FLAGS+=-ldflags '${GO_LDFLAGS}'
@@ -80,6 +80,9 @@ build: build-gui
 build-gui: ${TGZ_TARGET}
 
 build-nogui: ${EXE_NAME} build-launcher
+ifeq "${TARGET_OS}" "darwin"
+	mv ${BRIDGE_EXE} ${BRIDGE_EXE_NAME}
+endif
 
 go-build=go build $(1) -o $(2) $(3)
 go-build-finalize=${go-build}
@@ -107,6 +110,9 @@ build-launcher: ${RESOURCE_FILE}
 versioner:
 	go build ${BUILD_FLAGS} -o versioner utils/versioner/main.go
 
+vault-editor:
+	go build -tags debug -o vault-editor utils/vault-editor/main.go
+
 hasher:
 	go build -o hasher utils/hasher/main.go
 
@@ -215,9 +221,19 @@ change-copyright-year:
 	./utils/missing_license.sh change-year
 
 test: gofiles
-	go test -coverprofile=/tmp/coverage.out -run=${TESTRUN} \
-		./internal/...\
-		./pkg/...
+	go test -v -timeout=5m -p=1 -count=1 -coverprofile=/tmp/coverage.out -run=${TESTRUN} ./internal/... ./pkg/...
+
+test-race: gofiles
+	go test -v -timeout=30m -p=1 -count=1 -race -failfast -run=${TESTRUN} ./internal/... ./pkg/...
+
+test-integration: gofiles
+	go test -v -timeout=10m -p=1 -count=1 github.com/ProtonMail/proton-bridge/v3/tests
+
+test-integration-debug: gofiles
+	dlv test github.com/ProtonMail/proton-bridge/v3/tests -- -test.v -test.timeout=10m -test.parallel=1 -test.count=1
+
+test-integration-race: gofiles
+	go test -v -timeout=60m -p=1 -count=1 -race -failfast github.com/ProtonMail/proton-bridge/v3/tests
 
 bench:
 	go test -run '^$$' -bench=. -memprofile bench_mem.pprof -cpuprofile bench_cpu.pprof ./internal/store
@@ -227,16 +243,12 @@ bench:
 coverage: test
 	go tool cover -html=/tmp/coverage.out -o=coverage.html
 
-integration-test-bridge:
-	${MAKE} -C test test-bridge
-
 mocks:
-	mockgen --package mocks github.com/ProtonMail/proton-bridge/v2/internal/users Locator,PanicHandler,CredentialsStorer,StoreMaker > internal/users/mocks/mocks.go
-	mockgen --package mocks github.com/ProtonMail/proton-bridge/v2/pkg/listener Listener > internal/users/mocks/listener_mocks.go
-	mockgen --package mocks github.com/ProtonMail/proton-bridge/v2/internal/store PanicHandler,BridgeUser,ChangeNotifier,Storer > internal/store/mocks/mocks.go
-	mockgen --package mocks github.com/ProtonMail/proton-bridge/v2/pkg/listener Listener > internal/store/mocks/utils_mocks.go
-	mockgen --package mocks github.com/ProtonMail/proton-bridge/v2/pkg/pmapi Client,Manager > pkg/pmapi/mocks/mocks.go
-	mockgen --package mocks github.com/ProtonMail/proton-bridge/v2/pkg/message Fetcher > pkg/message/mocks/mocks.go
+	mockgen --package mocks github.com/ProtonMail/proton-bridge/v3/internal/bridge TLSReporter,ProxyController,Autostarter > tmp
+	mv tmp internal/bridge/mocks/mocks.go
+	mockgen --package mocks github.com/ProtonMail/proton-bridge/v3/internal/async PanicHandler > internal/bridge/mocks/async_mocks.go
+	mockgen --package mocks github.com/ProtonMail/gluon/reporter Reporter > internal/bridge/mocks/gluon_mocks.go
+	mockgen --package mocks github.com/ProtonMail/proton-bridge/v3/internal/updater Downloader,Installer > internal/updater/mocks/mocks.go
 
 lint: gofiles lint-golang lint-license lint-dependencies lint-changelog
 
@@ -254,6 +266,13 @@ lint-golang:
 	$(info linting with GOMAXPROCS=${GOMAXPROCS})
 	golangci-lint run ./...
 
+gobinsec: gobinsec-cache.yml build
+	gobinsec -wait -cache -config utils/gobinsec_conf.yml ${EXE_TARGET} ${DEPLOY_DIR}/${TARGET_OS}/${LAUNCHER_EXE}
+
+gobinsec-cache.yml:
+	./utils/gobinsec_update.sh
+	cp ./utils/gobinsec_update/gobinsec-cache-valid.yml ./gobinsec-cache.yml
+
 updates: install-go-mod-outdated
 	# Uncomment the "-ci" to fail the job if something can be updated.
 	go list -u -m -json all | go-mod-outdated -update -direct #-ci
@@ -274,7 +293,7 @@ gofiles: ./internal/bridge/credits.go
 	cd ./utils/ && ./credits.sh bridge
 
 ## Run and debug
-.PHONY: run run-qt run-qt-cli run-nogui run-nogui-cli run-debug run-qml-preview clean-vendor clean-frontend-qt clean-frontend-qt-common clean
+.PHONY: run run-qt run-qt-cli run-nogui run-cli run-noninteractive run-debug run-qml-preview clean-vendor clean-frontend-qt clean-frontend-qt-common clean
 
 LOG?=debug
 LOG_IMAP?=client # client/server/all, or empty to turn it off
@@ -285,12 +304,22 @@ run: run-qt
 
 run-cli: run-nogui
 
+run-noninteractive: build-nogui clean-vendor gofiles
+	PROTONMAIL_ENV=dev ./${LAUNCHER_EXE} ${RUN_FLAGS} -n
+
 run-qt: build-gui
+ifeq "${TARGET_OS}" "darwin"
+	PROTONMAIL_ENV=dev ${DARWINAPP_CONTENTS}/MacOS/${LAUNCHER_EXE}  ${RUN_FLAGS}
+else
 	PROTONMAIL_ENV=dev ./${DEPLOY_DIR}/${TARGET_OS}/${LAUNCHER_EXE} ${RUN_FLAGS}
+endif
 
 run-nogui: build-nogui clean-vendor gofiles
 	PROTONMAIL_ENV=dev ./${LAUNCHER_EXE} ${RUN_FLAGS} -c
 
+run-debug:
+	dlv debug ./cmd/Desktop-Bridge/main.go -- -l=debug
+
 clean-vendor:
 	rm -rf ./vendor
 
@@ -313,6 +342,7 @@ clean: clean-vendor clean-gui clean-vcpkg
 	rm -f ./*.syso
 	rm -f release-notes/bridge.html
 	rm -f release-notes/import-export.html
+	rm -f ${LAUNCHER_EXE} ${BRIDGE_EXE} ${BRIDGE_EXE_NAME}
 
 
 .PHONY: generate

README.md

@@ -22,7 +22,7 @@ to start Bridge on startup is enabled by default.
 When the main window is closed, Bridge will continue to run in the
 background.
 
-More details [on the public website](https://protonmail.com/bridge).
+More details [on the public website](https://proton.me/mail/bridge).
 
 ## Launchers
 Launchers are binaries used to run the Proton Mail Bridge or Import-Export apps.

cmd/Desktop-Bridge/main.go

@@ -17,6 +17,15 @@
 
 package main
 
+import (
+	"os"
+	"strings"
+
+	"github.com/ProtonMail/proton-bridge/v3/internal/app"
+	"github.com/bradenaw/juniper/xslices"
+	"github.com/sirupsen/logrus"
+)
+
 /*
                              ___....___
    ^^                __..-:'':__:..:__:'':-..__
@@ -34,41 +43,8 @@ package main
    ~~^_~^~/   \~^-~^~ _~^-~_^~-^~_^~~-^~_~^~-~_~-^~_^/   \~^ ~~_ ^
 */
 
-import (
-	"os"
-
-	"github.com/ProtonMail/proton-bridge/v2/internal/app/base"
-	"github.com/ProtonMail/proton-bridge/v2/internal/app/bridge"
-	"github.com/ProtonMail/proton-bridge/v2/internal/constants"
-	"github.com/sirupsen/logrus"
-)
-
-const (
-	appUsage      = "Proton Mail IMAP and SMTP Bridge"
-	configName    = "bridge"
-	updateURLName = "bridge"
-	keychainName  = "bridge"
-	cacheVersion  = "c11"
-)
-
 func main() {
-	base, err := base.New(
-		constants.FullAppName,
-		appUsage,
-		configName,
-		updateURLName,
-		keychainName,
-		cacheVersion,
-	)
-	if err != nil {
-		logrus.WithError(err).Fatal("Failed to create app base")
-	}
-	// Other instance already running.
-	if base == nil {
-		return
-	}
-
-	if err := bridge.New(base).Run(os.Args); err != nil {
-		logrus.WithError(err).Fatal("Bridge exited with error")
+	if err := app.New().Run(xslices.Filter(os.Args, func(arg string) bool { return !strings.Contains(arg, "-psn_") })); err != nil {
+		logrus.Fatal(err)
 	}
 }

cmd/launcher/main.go

@@ -26,14 +26,14 @@ import (
 
 	"github.com/Masterminds/semver/v3"
 	"github.com/ProtonMail/gopenpgp/v2/crypto"
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/useragent"
-	"github.com/ProtonMail/proton-bridge/v2/internal/constants"
-	"github.com/ProtonMail/proton-bridge/v2/internal/crash"
-	"github.com/ProtonMail/proton-bridge/v2/internal/locations"
-	"github.com/ProtonMail/proton-bridge/v2/internal/logging"
-	"github.com/ProtonMail/proton-bridge/v2/internal/sentry"
-	"github.com/ProtonMail/proton-bridge/v2/internal/updater"
-	"github.com/ProtonMail/proton-bridge/v2/internal/versioner"
+	"github.com/ProtonMail/proton-bridge/v3/internal/constants"
+	"github.com/ProtonMail/proton-bridge/v3/internal/crash"
+	"github.com/ProtonMail/proton-bridge/v3/internal/locations"
+	"github.com/ProtonMail/proton-bridge/v3/internal/logging"
+	"github.com/ProtonMail/proton-bridge/v3/internal/sentry"
+	"github.com/ProtonMail/proton-bridge/v3/internal/updater"
+	"github.com/ProtonMail/proton-bridge/v3/internal/useragent"
+	"github.com/ProtonMail/proton-bridge/v3/internal/versioner"
 	"github.com/bradenaw/juniper/xslices"
 	"github.com/elastic/go-sysinfo"
 	"github.com/elastic/go-sysinfo/types"
@@ -43,77 +43,90 @@ import (
 )
 
 const (
-	appName    = "Proton Mail Launcher"
-	configName = "bridge"
-	exeName    = "bridge"
-	guiName    = "bridge-gui"
+	appName = "Proton Mail Launcher"
+	exeName = "bridge"
+	guiName = "bridge-gui"
 
-	FlagCLI      = "--cli"
-	FlagCLIShort = "-c"
-	FlagLauncher = "--launcher"
-	FlagWait     = "--wait"
+	FlagCLI                 = "cli"
+	FlagCLIShort            = "c"
+	FlagNonInteractive      = "noninteractive"
+	FlagNonInteractiveShort = "n"
+	FlagLauncher            = "--launcher"
+	FlagWait                = "--wait"
 )
 
 func main() { //nolint:funlen
+	logrus.SetLevel(logrus.DebugLevel)
+	l := logrus.WithField("launcher_version", constants.Version)
+
 	reporter := sentry.NewReporter(appName, constants.Version, useragent.New())
 
 	crashHandler := crash.NewHandler(reporter.ReportException)
 	defer crashHandler.HandlePanic()
 
-	locationsProvider, err := locations.NewDefaultProvider(filepath.Join(constants.VendorName, configName))
+	locationsProvider, err := locations.NewDefaultProvider(filepath.Join(constants.VendorName, constants.ConfigName))
 	if err != nil {
-		logrus.WithError(err).Fatal("Failed to get locations provider")
+		l.WithError(err).Fatal("Failed to get locations provider")
 	}
 
-	locations := locations.New(locationsProvider, configName)
+	locations := locations.New(locationsProvider, constants.ConfigName)
 
 	logsPath, err := locations.ProvideLogsPath()
 	if err != nil {
-		logrus.WithError(err).Fatal("Failed to get logs path")
+		l.WithError(err).Fatal("Failed to get logs path")
 	}
 	crashHandler.AddRecoveryAction(logging.DumpStackTrace(logsPath))
 
-	if err := logging.Init(logsPath); err != nil {
-		logrus.WithError(err).Fatal("Failed to setup logging")
+	if err := logging.Init(logsPath, os.Getenv("VERBOSITY")); err != nil {
+		l.WithError(err).Fatal("Failed to setup logging")
 	}
 
-	logging.SetLevel(os.Getenv("VERBOSITY"))
-
 	updatesPath, err := locations.ProvideUpdatesPath()
 	if err != nil {
-		logrus.WithError(err).Fatal("Failed to get updates path")
+		l.WithError(err).Fatal("Failed to get updates path")
 	}
 
 	key, err := crypto.NewKeyFromArmored(updater.DefaultPublicKey)
 	if err != nil {
-		logrus.WithError(err).Fatal("Failed to create new verification key")
+		l.WithError(err).Fatal("Failed to create new verification key")
 	}
 
 	kr, err := crypto.NewKeyRing(key)
 	if err != nil {
-		logrus.WithError(err).Fatal("Failed to create new verification keyring")
+		l.WithError(err).Fatal("Failed to create new verification keyring")
 	}
 
 	versioner := versioner.New(updatesPath)
 
-	exeToLaunch := guiName
-	args := os.Args[1:]
-	if inCLIMode(args) {
-		exeToLaunch = exeName
-	}
-
-	exe, err := getPathToUpdatedExecutable(exeToLaunch, versioner, kr, reporter)
-	if err != nil {
-		if exe, err = getFallbackExecutable(exeToLaunch, versioner); err != nil {
-			logrus.WithError(err).Fatal("Failed to find any launchable executable")
-		}
-	}
-
 	launcher, err := os.Executable()
 	if err != nil {
 		logrus.WithError(err).Fatal("Failed to determine path to launcher")
 	}
 
+	l = l.WithField("launcher_path", launcher)
+
+	args := os.Args[1:]
+
+	exe, err := getPathToUpdatedExecutable(filepath.Base(launcher), versioner, kr, reporter)
+	if err != nil {
+		exeToLaunch := guiName
+		if inCLIMode(args) {
+			exeToLaunch = exeName
+		}
+
+		l = l.WithField("exe_to_launch", exeToLaunch)
+		l.WithError(err).Info("No more updates found, looking up bridge executable")
+
+		path, err := versioner.GetExecutableInDirectory(exeToLaunch, filepath.Dir(launcher))
+		if err != nil {
+			l.WithError(err).Fatal("No executable in launcher directory")
+		}
+
+		exe = path
+	}
+
+	l = l.WithField("exe_path", exe)
+
 	args, wait, mainExe := findAndStripWait(args)
 	if wait {
 		waitForProcessToFinish(mainExe)
@@ -124,6 +137,7 @@ func main() { //nolint:funlen
 	cmd.Stdin = os.Stdin
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
+	cmd.Env = os.Environ()
 
 	// On windows, if you use Run(), a terminal stays open; we don't want that.
 	if //goland:noinspection GoBoolExpressions
@@ -134,7 +148,7 @@ func main() { //nolint:funlen
 	}
 
 	if err != nil {
-		logrus.WithError(err).Fatal("Failed to launch")
+		l.WithError(err).Fatal("Failed to launch")
 	}
 }
 
@@ -148,16 +162,21 @@ func appendLauncherPath(path string, args []string) []string {
 	return args
 }
 
-// inCLIMode detect if CLI mode is asked.
-func inCLIMode(args []string) bool {
-	return sliceContains(args, FlagCLI) || sliceContains(args, FlagCLIShort)
-}
-
 // sliceContains checks if a value is present in a list.
 func sliceContains[T comparable](list []T, s T) bool {
 	return xslices.Any(list, func(arg T) bool { return arg == s })
 }
 
+// inCLIMode detect if CLI mode is asked.
+func inCLIMode(args []string) bool {
+	return hasFlag(args, FlagCLI) || hasFlag(args, FlagCLIShort) || hasFlag(args, FlagNonInteractive) || hasFlag(args, FlagNonInteractiveShort)
+}
+
+// hasFlag checks if a flag is present in a list.
+func hasFlag(args []string, flag string) bool {
+	return xslices.Any(args, func(arg string) bool { return (arg == "-"+flag) || (arg == "--"+flag) })
+}
+
 // findAndStrip check if a value is present in s list and remove all occurrences of the value from this list.
 func findAndStrip[T comparable](slice []T, v T) (strippedList []T, found bool) {
 	strippedList = xslices.Filter(slice, func(value T) bool {
@@ -193,11 +212,11 @@ func findAndStripWait(args []string) ([]string, bool, string) {
 
 func getPathToUpdatedExecutable(
 	name string,
-	versioner *versioner.Versioner,
+	ver *versioner.Versioner,
 	kr *crypto.KeyRing,
 	reporter *sentry.Reporter,
 ) (string, error) {
-	versions, err := versioner.ListVersions()
+	versions, err := ver.ListVersions()
 	if err != nil {
 		return "", errors.Wrap(err, "failed to list available versions")
 	}
@@ -208,7 +227,11 @@ func getPathToUpdatedExecutable(
 	}
 
 	for _, version := range versions {
-		vlog := logrus.WithField("version", version)
+		vlog := logrus.WithFields(logrus.Fields{
+			"version":       constants.Version,
+			"check_version": version,
+			"name":          name,
+		})
 
 		if err := version.VerifyFiles(kr); err != nil {
 			vlog.WithError(err).Error("Files failed verification and will be removed")
@@ -241,17 +264,6 @@ func getPathToUpdatedExecutable(
 	return "", errors.New("no available newer versions")
 }
 
-func getFallbackExecutable(name string, versioner *versioner.Versioner) (string, error) {
-	logrus.Info("Searching for fallback executable")
-
-	launcher, err := os.Executable()
-	if err != nil {
-		return "", errors.Wrap(err, "failed to determine path to launcher")
-	}
-
-	return versioner.GetExecutableInDirectory(name, filepath.Dir(launcher))
-}
-
 // waitForProcessToFinish waits until the process with the given path is finished.
 func waitForProcessToFinish(exePath string) {
 	for {
@@ -270,7 +282,8 @@ func waitForProcessToFinish(exePath string) {
 		if xslices.Any(processes, func(process types.Process) bool {
 			info, err := process.Info()
 			if err != nil {
-				logrus.WithError(err).Error("Could not retrieve process info")
+				logrus.WithError(err).Trace("Could not retrieve process info")
+				return false
 			}
 
 			return sameFile(exeInfo, info.Exe)
@@ -288,6 +301,7 @@ func sameFile(info os.FileInfo, path string) bool {
 	pathInfo, err := os.Stat(path)
 	if err != nil {
 		logrus.WithError(err).WithField("file", path).Error("Could not retrieve file info")
+		return false
 	}
 
 	return os.SameFile(pathInfo, info)

dist/bridgeMacOS.svg

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg width="100%" height="100%" viewBox="0 0 260 260" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" xmlns:serif="http://www.serif.com/" style="fill-rule:evenodd;clip-rule:evenodd;stroke-linejoin:round;stroke-miterlimit:2;">
+    <g>
+        <g transform="matrix(1.27944,0,0,1.35453,-34.9539,-16.0513)">
+            <path d="M40,62.391C40,38.979 58.979,20 82.391,20L177.609,20C201.021,20 220,38.979 220,62.391L220,157.609C220,181.021 201.021,200 177.609,200L82.391,200C58.979,200 40,181.021 40,157.609L40,62.391Z" style="fill:white;fill-rule:nonzero;"/>
+        </g>
+        <g transform="matrix(1.41874,0,0,1.41874,-55.214,-18.9171)">
+            <path d="M129.748,48.657C101.923,48.657 79.369,71.21 79.369,99.035L79.369,149.747C79.369,155.139 83.74,159.509 89.131,159.509L171.407,159.509C176.22,159.509 180.126,155.604 180.126,150.79L180.126,99.035C180.126,71.214 157.572,48.657 129.748,48.657ZM158.746,98.755L136.726,117.305C132.752,120.655 126.939,120.655 122.965,117.305L100.945,98.755C100.945,83.014 113.708,70.251 129.45,70.251L130.242,70.251C145.983,70.251 158.746,83.014 158.746,98.755Z" style="fill:rgb(109,74,255);fill-rule:nonzero;"/>
+        </g>
+        <g transform="matrix(1.41874,0,0,1.41874,-55.214,-18.9171)">
+            <path d="M129.748,48.657C101.923,48.657 79.369,71.21 79.369,99.035L79.369,149.748C79.369,155.139 83.74,159.509 89.131,159.509L171.407,159.509C176.22,159.509 180.126,155.604 180.126,150.79L180.126,99.035C180.126,71.214 157.572,48.657 129.748,48.657ZM158.746,98.755L136.726,117.305C132.752,120.655 126.939,120.655 122.965,117.305L100.945,98.755C100.945,83.014 113.708,70.251 129.45,70.251L130.242,70.251C145.983,70.251 158.746,83.014 158.746,98.755Z" style="fill:url(#_Linear1);fill-rule:nonzero;"/>
+        </g>
+        <g transform="matrix(1.41874,0,0,1.41874,-55.214,-18.9171)">
+            <path d="M136.764,117.529C134.468,119.388 128.499,121.99 122.989,117.529C117.479,113.069 106.044,103.208 101.015,98.835L101.041,98.835L100.946,98.756C100.946,83.014 113.709,70.251 129.45,70.251L130.242,70.251C145.984,70.251 158.746,83.014 158.746,98.756L158.652,98.835L158.737,98.835L158.737,159.51L171.407,159.51C176.221,159.51 180.126,155.604 180.126,150.79L180.126,99.035C180.126,71.214 157.573,48.657 129.748,48.657C101.923,48.657 79.37,71.211 79.37,99.035L79.37,102.219L110.526,129.008C112.822,131.195 118.857,134.256 124.629,129.008C130.401,123.761 135.124,119.169 136.764,117.529Z" style="fill:url(#_Radial2);fill-rule:nonzero;"/>
+        </g>
+    </g>
+    <defs>
+        <linearGradient id="_Linear1" x1="0" y1="0" x2="1" y2="0" gradientUnits="userSpaceOnUse" gradientTransform="matrix(15.0864,-42.636,42.636,15.0864,82.9769,172.3)"><stop offset="0" style="stop-color:rgb(40,176,232);stop-opacity:1"/><stop offset="1" style="stop-color:rgb(197,183,255);stop-opacity:0"/></linearGradient>
+        <radialGradient id="_Radial2" cx="0" cy="0" r="1" gradientUnits="userSpaceOnUse" gradientTransform="matrix(-94.8157,-85.2706,69.7189,-77.5232,174.186,168.693)"><stop offset="0" style="stop-color:rgb(226,219,255);stop-opacity:1"/><stop offset="1" style="stop-color:rgb(109,74,255);stop-opacity:1"/></radialGradient>
+    </defs>
+</svg>

dist/info.rc

@@ -3,7 +3,7 @@
 
 IDI_ICON1 ICON DISCARDABLE STRINGIZE(ICO_FILE)
 
-#define FILE_COMMENTS "The Bridge is an application that runs on your computer in the background and seamlessly encrypts and decrypts your mail as it enters and leaves your computer."
+#define FILE_COMMENTS "Proton Mail Bridge is a desktop application that runs in the background, encrypting and decrypting messages as they enter and leave your computer."
 #define FILE_DESCRIPTION "Proton Mail Bridge"
 #define INTERNAL_NAME STRINGIZE(EXE_NAME)
 #define PRODUCT_NAME "Proton Mail Bridge for Windows"

dist/proton-bridge.desktop

@@ -3,7 +3,7 @@ Type=Application
 Version=1.1
 Name=Proton Mail Bridge
 GenericName=Proton Mail Bridge for Linux
-Comment=The Bridge is an application that runs on your computer in the background and seamlessly encrypts and decrypts your mail as it enters and leaves your computer.
+Comment=Proton Mail Bridge is a desktop application that runs in the background, encrypting and decrypting messages as they enter and leave your computer.
 Icon=protonmail-bridge
 Exec=protonmail-bridge
 Terminal=false

go.mod

@@ -1,16 +1,14 @@
-module github.com/ProtonMail/proton-bridge/v2
+module github.com/ProtonMail/proton-bridge/v3
 
 go 1.18
 
 require (
 	github.com/0xAX/notificator v0.0.0-20220220101646-ee9b8921e557
 	github.com/Masterminds/semver/v3 v3.1.1
+	github.com/ProtonMail/gluon v0.14.2-0.20221214122222-2ab5c92d3546
 	github.com/ProtonMail/go-autostart v0.0.0-20210130080809-00ed301c8e9a
-	github.com/ProtonMail/go-crypto v0.0.0-20220824120805-4b6e5c587895
-	github.com/ProtonMail/go-imap-id v0.0.0-20190926060100-f94a56b9ecde
+	github.com/ProtonMail/go-proton-api v0.2.1
 	github.com/ProtonMail/go-rfc5322 v0.11.0
-	github.com/ProtonMail/go-srp v0.0.5
-	github.com/ProtonMail/go-vcard v0.0.0-20180326232728-33aaa0a0c8a5
 	github.com/ProtonMail/gopenpgp/v2 v2.4.10
 	github.com/PuerkitoBio/goquery v1.8.0
 	github.com/abiosoft/ishell v2.0.0+incompatible
@@ -18,52 +16,53 @@ require (
 	github.com/bradenaw/juniper v0.8.0
 	github.com/cucumber/godog v0.12.5
 	github.com/cucumber/messages-go/v16 v16.0.1
-	github.com/docker/docker-credential-helpers v0.6.4
+	github.com/docker/docker-credential-helpers v0.6.3
 	github.com/elastic/go-sysinfo v1.8.1
-	github.com/emersion/go-imap v1.2.1
-	github.com/emersion/go-imap-appendlimit v0.0.0-20210907172056-e3baed77bbe4
-	github.com/emersion/go-imap-move v0.0.0-20210907172020-fe4558f9c872
-	github.com/emersion/go-imap-quota v0.0.0-20210203125329-619074823f3c
-	github.com/emersion/go-imap-unselect v0.0.0-20210907172115-4c2c4843bf69
+	github.com/emersion/go-imap v1.2.1-0.20220429085312-746087b7a317
+	github.com/emersion/go-imap-id v0.0.0-20190926060100-f94a56b9ecde
 	github.com/emersion/go-message v0.16.0
 	github.com/emersion/go-sasl v0.0.0-20220912192320-0145f2c60ead
-	github.com/emersion/go-smtp v0.15.0
-	github.com/emersion/go-textwrapper v0.0.0-20200911093747-65d896831594
+	github.com/emersion/go-smtp v0.15.1-0.20221021114529-49b17434419d
 	github.com/fatih/color v1.13.0
-	github.com/getsentry/sentry-go v0.13.0
+	github.com/getsentry/sentry-go v0.15.0
 	github.com/go-resty/resty/v2 v2.7.0
+	github.com/goccy/go-json v0.9.11
 	github.com/godbus/dbus v4.1.0+incompatible
 	github.com/golang/mock v1.6.0
 	github.com/google/go-cmp v0.5.9
 	github.com/google/uuid v1.3.0
 	github.com/hashicorp/go-multierror v1.1.1
 	github.com/jaytaylor/html2text v0.0.0-20211105163654-bc68cce691ba
-	github.com/keybase/go-keychain v0.0.0-20220610143837-c2ce06069005
-	github.com/logrusorgru/aurora v2.0.3+incompatible
+	github.com/keybase/go-keychain v0.0.0
 	github.com/miekg/dns v1.1.50
-	github.com/nsf/jsondiff v0.0.0-20210926074059-1e845ec5d249
 	github.com/pkg/errors v0.9.1
-	github.com/ricochet2200/go-disk-usage/du v0.0.0-20210707232629-ac9918953285
+	github.com/pkg/profile v1.6.0
 	github.com/sirupsen/logrus v1.9.0
 	github.com/stretchr/testify v1.8.0
-	github.com/urfave/cli/v2 v2.16.3
+	github.com/urfave/cli/v2 v2.20.3
 	github.com/vmihailenco/msgpack/v5 v5.3.5
-	go.etcd.io/bbolt v1.3.6
-	golang.org/x/exp v0.0.0-20220921164117-439092de6870
-	golang.org/x/net v0.0.0-20220921203646-d300de134e69
-	golang.org/x/sys v0.0.0-20220919091848-fb04ddd9f9c8
-	golang.org/x/text v0.3.7
-	google.golang.org/grpc v1.49.0
+	go.uber.org/goleak v1.2.0
+	golang.org/x/exp v0.0.0-20221023144134-a1e5550cf13e
+	golang.org/x/net v0.1.0
+	golang.org/x/sys v0.1.0
+	golang.org/x/text v0.4.0
+	google.golang.org/grpc v1.50.1
 	google.golang.org/protobuf v1.28.1
 	howett.net/plist v1.0.0
 )
 
 require (
+	ariga.io/atlas v0.7.0 // indirect
+	entgo.io/ent v0.11.2 // indirect
 	github.com/ProtonMail/bcrypt v0.0.0-20211005172633-e235017c1baf // indirect
+	github.com/ProtonMail/go-crypto v0.0.0-20220824120805-4b6e5c587895 // indirect
 	github.com/ProtonMail/go-mime v0.0.0-20220429130430-2192574d760f // indirect
+	github.com/ProtonMail/go-srp v0.0.5 // indirect
 	github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db // indirect
+	github.com/agext/levenshtein v1.2.3 // indirect
 	github.com/andybalholm/cascadia v1.3.1 // indirect
 	github.com/antlr/antlr4/runtime/Go/antlr v1.4.10 // indirect
+	github.com/apparentlymart/go-textseg/v13 v13.0.0 // indirect
 	github.com/chzyer/test v1.0.0 // indirect
 	github.com/cloudflare/circl v1.2.0 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
@@ -72,31 +71,50 @@ require (
 	github.com/danieljoos/wincred v1.1.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/elastic/go-windows v1.0.1 // indirect
+	github.com/emersion/go-textwrapper v0.0.0-20200911093747-65d896831594 // indirect
 	github.com/emersion/go-vcard v0.0.0-20220507122617-d4056df0ec4a // indirect
 	github.com/flynn-archive/go-shlex v0.0.0-20150515145356-3f9db97f8568 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/gin-gonic/gin v1.8.1 // indirect
+	github.com/go-openapi/inflect v0.19.0 // indirect
+	github.com/go-playground/locales v0.14.0 // indirect
+	github.com/go-playground/universal-translator v0.18.0 // indirect
+	github.com/go-playground/validator/v10 v10.11.1 // indirect
 	github.com/gofrs/uuid v4.3.0+incompatible // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-immutable-radix v1.3.1 // indirect
 	github.com/hashicorp/go-memdb v1.3.3 // indirect
 	github.com/hashicorp/golang-lru v0.5.4 // indirect
+	github.com/hashicorp/hcl/v2 v2.14.0 // indirect
 	github.com/joeshaw/multierror v0.0.0-20140124173710-69b34d4ec901 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/leodido/go-urn v1.2.1 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.16 // indirect
 	github.com/mattn/go-runewidth v0.0.14 // indirect
+	github.com/mattn/go-sqlite3 v1.14.15 // indirect
+	github.com/mitchellh/go-wordwrap v1.0.1 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/olekukonko/tablewriter v0.0.5 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.5 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/procfs v0.8.0 // indirect
 	github.com/rivo/uniseg v0.4.2 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/ssor/bom v0.0.0-20170718123548-6386211fdfcf // indirect
+	github.com/ugorji/go/codec v1.2.7 // indirect
 	github.com/vmihailenco/tagparser/v2 v2.0.0 // indirect
 	github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect
-	golang.org/x/crypto v0.0.0-20220919173607-35f4265a4bc0 // indirect
+	github.com/zclconf/go-cty v1.11.0 // indirect
+	golang.org/x/crypto v0.1.0 // indirect
 	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
-	golang.org/x/tools v0.1.12 // indirect
+	golang.org/x/sync v0.0.0-20220907140024-f12130a52804 // indirect
+	golang.org/x/tools v0.1.13-0.20220804200503-81c7dc4e4efa // indirect
 	google.golang.org/genproto v0.0.0-20220921223823-23cae91e6737 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
 

go.sum

@@ -1,3 +1,5 @@
+ariga.io/atlas v0.7.0 h1:daEFdUsyNm7EHyzcMfjWwq/fVv48fCfad+dIGyobY1k=
+ariga.io/atlas v0.7.0/go.mod h1:ft47uSh5hWGDCmQC9DsztZg6Xk+KagM5Ts/mZYKb9JE=
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
@@ -11,10 +13,13 @@ cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqCl
 cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
 cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
+entgo.io/ent v0.11.2 h1:UM2/BUhF2FfsxPHRxLjQbhqJNaDdVlOwNIAMLs2jyto=
+entgo.io/ent v0.11.2/go.mod h1:YGHEQnmmIUgtD5b1ICD5vg74dS3npkNnmC5K+0J+IHU=
 github.com/0xAX/notificator v0.0.0-20220220101646-ee9b8921e557 h1:l6surSnJ3RP4qA1qmKJ+hQn3UjytosdoG27WGjrDlVs=
 github.com/0xAX/notificator v0.0.0-20220220101646-ee9b8921e557/go.mod h1:sTrmvD/TxuypdOERsDOS7SndZg0rzzcCi1b6wQMXUYM=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/DATA-DOG/go-sqlmock v1.5.0 h1:Shsta01QNfFxHCfpW6YH2STWB0MudeXXEWMr20OEh60=
 github.com/Masterminds/semver/v3 v3.1.1 h1:hLg3sBzpNErnxhQtUy/mmLR2I9foDujNK030IGemrRc=
 github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
@@ -23,6 +28,8 @@ github.com/ProtonMail/bcrypt v0.0.0-20211005172633-e235017c1baf h1:yc9daCCYUefEs
 github.com/ProtonMail/bcrypt v0.0.0-20211005172633-e235017c1baf/go.mod h1:o0ESU9p83twszAU8LBeJKFAAMX14tISa0yk4Oo5TOqo=
 github.com/ProtonMail/docker-credential-helpers v1.1.0 h1:+kvUIpwWcbtP3WFv5sSvkFn/XLzSqPOB5AAthuk9xPk=
 github.com/ProtonMail/docker-credential-helpers v1.1.0/go.mod h1:mK0aBveCxhnQ756AmaTfXMZDeULvheYVhF/MWMErN5g=
+github.com/ProtonMail/gluon v0.14.2-0.20221214122222-2ab5c92d3546 h1:iyN4eO1Z0N+inMukpoBCmfbI+ubAop4Op/sdzmmUcm4=
+github.com/ProtonMail/gluon v0.14.2-0.20221214122222-2ab5c92d3546/go.mod h1:z2AxLIiBCT1K+0OBHyaDI7AEaO5qI6/BEC2TE42vs4Q=
 github.com/ProtonMail/go-autostart v0.0.0-20210130080809-00ed301c8e9a h1:D+aZah+k14Gn6kmL7eKxoo/4Dr/lK3ChBcwce2+SQP4=
 github.com/ProtonMail/go-autostart v0.0.0-20210130080809-00ed301c8e9a/go.mod h1:oTGdE7/DlWIr23G0IKW3OXK9wZ5Hw1GGiaJFccTvZi4=
 github.com/ProtonMail/go-crypto v0.0.0-20210428141323-04723f9f07d7/go.mod h1:z4/9nQmJSSwwds7ejkxaJwO37dru3geImFUdJlaLzQo=
@@ -31,19 +38,17 @@ github.com/ProtonMail/go-crypto v0.0.0-20220824120805-4b6e5c587895 h1:NsReiLpErI
 github.com/ProtonMail/go-crypto v0.0.0-20220824120805-4b6e5c587895/go.mod h1:UBYPn8k0D56RtnR8RFQMjmh4KrZzWJ5o7Z9SYjossQ8=
 github.com/ProtonMail/go-imap v0.0.0-20201228133358-4db68cea0cac h1:2xU3QncAiS/W3UlWZTkbNKW5WkLzk6Egl1T0xX+sbjs=
 github.com/ProtonMail/go-imap v0.0.0-20201228133358-4db68cea0cac/go.mod h1:yKASt+C3ZiDAiCSssxg9caIckWF/JG7ZQTO7GAmvicU=
-github.com/ProtonMail/go-imap-id v0.0.0-20190926060100-f94a56b9ecde h1:5koQozTDELymYOyFbQ/VSubexAEXzDR8qGM5mO8GRdw=
-github.com/ProtonMail/go-imap-id v0.0.0-20190926060100-f94a56b9ecde/go.mod h1:795VPXcRUIQ9JyMNHP4el582VokQfippgjkQP3Gk0r0=
 github.com/ProtonMail/go-message v0.0.0-20210611055058-fabeff2ec753 h1:I8IsYA297x0QLU80G5I6aLYUu3JYNSpo8j5fkXtFDW0=
 github.com/ProtonMail/go-message v0.0.0-20210611055058-fabeff2ec753/go.mod h1:NBAn21zgCJ/52WLDyed18YvYFm5tEoeDauubFqLokM4=
 github.com/ProtonMail/go-mime v0.0.0-20220302105931-303f85f7fe0f/go.mod h1:NYt+V3/4rEeDuaev/zw1zCq8uqVEuPHzDPo3OZrlGJ4=
 github.com/ProtonMail/go-mime v0.0.0-20220429130430-2192574d760f h1:4IWzKjHzZxdrW9k4zl/qCwenOVHDbVDADPPHFLjs0Oc=
 github.com/ProtonMail/go-mime v0.0.0-20220429130430-2192574d760f/go.mod h1:qRZgbeASl2a9OwmsV85aWwRqic0NHPh+9ewGAzb4cgM=
+github.com/ProtonMail/go-proton-api v0.2.1 h1:M15/zzfx6EPiskv2+gogUkmvx7Y1SmRRtLT6GiBh5T0=
+github.com/ProtonMail/go-proton-api v0.2.1/go.mod h1:jqvJ2HqLHqiPJoEb+BTIB1IF7wvr6p+8ZfA6PO2NRNk=
 github.com/ProtonMail/go-rfc5322 v0.11.0 h1:o5Obrm4DpmQEffvgsVqG6S4BKwC1Wat+hYwjIp2YcCY=
 github.com/ProtonMail/go-rfc5322 v0.11.0/go.mod h1:6oOKr0jXvpoE6pwTx/HukigQpX2J9WUf6h0auplrFTw=
 github.com/ProtonMail/go-srp v0.0.5 h1:xhUioxZgDbCnpo9JehyFhwwsn9JLWkUGfB0oiKXgiGg=
 github.com/ProtonMail/go-srp v0.0.5/go.mod h1:06iYHtLXW8vjLtccWj++x3MKy65sIT8yZd7nrJF49rs=
-github.com/ProtonMail/go-vcard v0.0.0-20180326232728-33aaa0a0c8a5 h1:Uga1DHFN4GUxuDQr0F71tpi8I9HqPIlZodZAI1lR6VQ=
-github.com/ProtonMail/go-vcard v0.0.0-20180326232728-33aaa0a0c8a5/go.mod h1:oeP9CMN+ajWp5jKp1kue5daJNwMMxLF+ujPaUIoJWlA=
 github.com/ProtonMail/gopenpgp/v2 v2.4.10 h1:EYgkxzwmQvsa6kxxkgP1AwzkFqKHscF2UINxaSn6rdI=
 github.com/ProtonMail/gopenpgp/v2 v2.4.10/go.mod h1:CTRA7/toc/4DxDy5Du4hPDnIZnJvXSeQ8LsRTOUJoyc=
 github.com/PuerkitoBio/goquery v1.8.0 h1:PJTF7AmFCFKk1N6V6jmKfrNH9tV5pNE6lZMkG0gta/U=
@@ -52,6 +57,8 @@ github.com/abiosoft/ishell v2.0.0+incompatible h1:zpwIuEHc37EzrsIYah3cpevrIc8Oma
 github.com/abiosoft/ishell v2.0.0+incompatible/go.mod h1:HQR9AqF2R3P4XXpMpI0NAzgHf/aS6+zVXRj14cVk9qg=
 github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db h1:CjPUSXOiYptLbTdr1RceuZgSFDQ7U15ITERUGrUORx8=
 github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db/go.mod h1:rB3B4rKii8V21ydCbIzH5hZiCQE7f5E9SzUb/ZZx530=
+github.com/agext/levenshtein v1.2.3 h1:YB2fHEn0UJagG8T1rrWknE3ZQzWM06O8AMAatNn7lmo=
+github.com/agext/levenshtein v1.2.3/go.mod h1:JEDfjyjHDjOF/1e4FlBE/PkbqA9OfWu2ki2W0IB5558=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/allan-simon/go-singleinstance v0.0.0-20210120080615-d0997106ab37 h1:28uU3TtuvQ6KRndxg9TrC868jBWmSKgh0GTXkACCXmA=
@@ -61,6 +68,8 @@ github.com/andybalholm/cascadia v1.3.1/go.mod h1:R4bJ1UQfqADjvDa4P6HZHLh/3OxWWEq
 github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20220816024939-bc8df83d7b9d/go.mod h1:F7bn7fEU90QkQ3tnmaTx3LTKLEDqnwWODIYppRQ5hnY=
 github.com/antlr/antlr4/runtime/Go/antlr v1.4.10 h1:yL7+Jz0jTC6yykIK/Wh74gnTJnrGr5AyrNMXuA0gves=
 github.com/antlr/antlr4/runtime/Go/antlr v1.4.10/go.mod h1:F7bn7fEU90QkQ3tnmaTx3LTKLEDqnwWODIYppRQ5hnY=
+github.com/apparentlymart/go-textseg/v13 v13.0.0 h1:Y+KvPE1NYz0xl601PVImeQfFyEy6iT90AvPUL1NNfNw=
+github.com/apparentlymart/go-textseg/v13 v13.0.0/go.mod h1:ZK2fH7c4NqDTLtiYLvIkEghdlcqw7yxLeM89kiTRPUo=
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
 github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
 github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
@@ -89,6 +98,7 @@ github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfc
 github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/cpuguy83/go-md2man/v2 v2.0.2 h1:p1EgwI/C7NhT0JmVkwCD2ZBK8j4aeHQX2pMHHBfMQ6w=
 github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/cronokirby/saferith v0.33.0 h1:TgoQlfsD4LIwx71+ChfRcIpjkw+RPOapDEVxa+LhwLo=
 github.com/cronokirby/saferith v0.33.0/go.mod h1:QKJhjoqUtBsXCAVEjw38mFqoi7DebT7kthcD7UzbnoA=
 github.com/cucumber/gherkin-go/v19 v19.0.3 h1:mMSKu1077ffLbTJULUfM5HPokgeBcIGboyeNUof1MdE=
@@ -112,20 +122,14 @@ github.com/elastic/go-sysinfo v1.8.1 h1:4Yhj+HdV6WjbCRgGdZpPJ8lZQlXZLKDAeIkmQ/VR
 github.com/elastic/go-sysinfo v1.8.1/go.mod h1:JfllUnzoQV/JRYymbH3dO1yggI3mV2oTKSXsDHM+uIM=
 github.com/elastic/go-windows v1.0.1 h1:AlYZOldA+UJ0/2nBuqWdo90GFCgG9xuyw9SYzGUtJm0=
 github.com/elastic/go-windows v1.0.1/go.mod h1:FoVvqWSun28vaDQPbj2Elfc0JahhPB7WQEGa3c814Ss=
-github.com/emersion/go-imap-appendlimit v0.0.0-20210907172056-e3baed77bbe4 h1:U6LL6F1dYqXpVTwEbXhcfU8hgpNvmjB9xeOAiHN695o=
-github.com/emersion/go-imap-appendlimit v0.0.0-20210907172056-e3baed77bbe4/go.mod h1:ikgISoP7pRAolqsVP64yMteJa2FIpS6ju88eBT6K1yQ=
-github.com/emersion/go-imap-move v0.0.0-20210907172020-fe4558f9c872 h1:HGBfonz0q/zq7y3ew+4oy4emHSvk6bkmV0mdDG3E77M=
-github.com/emersion/go-imap-move v0.0.0-20210907172020-fe4558f9c872/go.mod h1:QuMaZcKFDVI0yCrnAbPLfbwllz1wtOrZH8/vZ5yzp4w=
-github.com/emersion/go-imap-quota v0.0.0-20210203125329-619074823f3c h1:khcEdu1yFiZjBgi7gGnQiLhpSgghJ0YTnKD0l4EUqqc=
-github.com/emersion/go-imap-quota v0.0.0-20210203125329-619074823f3c/go.mod h1:iApyhIQBiU4XFyr+3kdJyyGqle82TbQyuP2o+OZHrV0=
-github.com/emersion/go-imap-unselect v0.0.0-20210907172115-4c2c4843bf69 h1:ltTnRlPdSMMb0a/pg7S31T3g+syYeSS5UVJtiR7ez1Y=
-github.com/emersion/go-imap-unselect v0.0.0-20210907172115-4c2c4843bf69/go.mod h1:+gnnZx3Mg3MnCzZrv0eZdp5puxXQUgGT/6N6L7ShKfM=
+github.com/emersion/go-imap-id v0.0.0-20190926060100-f94a56b9ecde h1:43mBoVwooyLm1+1YVf5nvn1pSFWhw7rOpcrp1Jg/qk0=
+github.com/emersion/go-imap-id v0.0.0-20190926060100-f94a56b9ecde/go.mod h1:sPwp0FFboaK/bxsrUz1lNrDMUCsZUsKC5YuM4uRVRVs=
 github.com/emersion/go-sasl v0.0.0-20191210011802-430746ea8b9b/go.mod h1:G/dpzLu16WtQpBfQ/z3LYiYJn3ZhKSGWn83fyoyQe/k=
 github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21/go.mod h1:iL2twTeMvZnrg54ZoPDNfJaJaqy0xIQFuBdrLsmspwQ=
 github.com/emersion/go-sasl v0.0.0-20220912192320-0145f2c60ead h1:fI1Jck0vUrXT8bnphprS1EoVRe2Q5CKCX8iDlpqjQ/Y=
 github.com/emersion/go-sasl v0.0.0-20220912192320-0145f2c60ead/go.mod h1:iL2twTeMvZnrg54ZoPDNfJaJaqy0xIQFuBdrLsmspwQ=
-github.com/emersion/go-smtp v0.15.0 h1:3+hMGMGrqP/lqd7qoxZc1hTU8LY8gHV9RFGWlqSDmP8=
-github.com/emersion/go-smtp v0.15.0/go.mod h1:qm27SGYgoIPRot6ubfQ/GpiPy/g3PaZAVRxiO/sDUgQ=
+github.com/emersion/go-smtp v0.15.1-0.20221021114529-49b17434419d h1:hFRM6zCBSc+Xa0rBOqSlG6Qe9dKC/2vLhGAuZlWxTsc=
+github.com/emersion/go-smtp v0.15.1-0.20221021114529-49b17434419d/go.mod h1:qm27SGYgoIPRot6ubfQ/GpiPy/g3PaZAVRxiO/sDUgQ=
 github.com/emersion/go-textwrapper v0.0.0-20200911093747-65d896831594 h1:IbFBtwoTQyw0fIM5xv1HF+Y+3ZijDR839WMulgxCcUY=
 github.com/emersion/go-textwrapper v0.0.0-20200911093747-65d896831594/go.mod h1:aqO8z8wPrjkscevZJFVE1wXJrLpC5LtJG7fqLOsPb2U=
 github.com/emersion/go-vcard v0.0.0-20220507122617-d4056df0ec4a h1:cltZpe6s0SJtqK5c/5y2VrIYi8BAtDM6qjmiGYqfTik=
@@ -136,17 +140,34 @@ github.com/fatih/color v1.13.0/go.mod h1:kLAiJbzzSOZDVNGyDpeOxJ47H46qBXwg5ILebYF
 github.com/flynn-archive/go-shlex v0.0.0-20150515145356-3f9db97f8568 h1:BMXYYRWTLOJKlh+lOBt6nUQgXAfB7oVIQt5cNreqSLI=
 github.com/flynn-archive/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:rZfgFAXFS/z/lEd6LJmf9HVZ1LkgYiHx5pHhV5DR16M=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
-github.com/getsentry/sentry-go v0.13.0 h1:20dgTiUSfxRB/EhMPtxcL9ZEbM1ZdR+W/7f7NWD+xWo=
-github.com/getsentry/sentry-go v0.13.0/go.mod h1:EOsfu5ZdvKPfeHYV6pTVQnsjfp30+XA7//UooKNumH0=
+github.com/getsentry/sentry-go v0.15.0 h1:CP9bmA7pralrVUedYZsmIHWpq/pBtXTSew7xvVpfLaA=
+github.com/getsentry/sentry-go v0.15.0/go.mod h1:RZPJKSw+adu8PBNygiri/A98FqVr2HtRckJk9XVxJ9I=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
-github.com/go-errors/errors v1.0.1 h1:LUHzmkK3GUKUrL/1gfBUxAHzcev3apQlezX/+O7ma6w=
+github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE=
+github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI=
+github.com/gin-gonic/gin v1.8.1 h1:4+fr/el88TOO3ewCmQr8cx/CtZ/umlIRIs5M4NTNjf8=
+github.com/gin-gonic/gin v1.8.1/go.mod h1:ji8BvRH1azfM+SYow9zQ6SZMvR8qOMZHmsCuWR9tTTk=
+github.com/go-errors/errors v1.4.2 h1:J6MZopCL4uSllY1OfXM374weqZFFItUbrImctkmUxIA=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
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@@ -174,6 +195,7 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
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@@ -218,6 +240,8 @@ github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ
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@@ -230,6 +254,8 @@ github.com/joeshaw/multierror v0.0.0-20140124173710-69b34d4ec901 h1:rp+c0RAYOWj8
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@@ -239,13 +265,16 @@ github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+o
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@@ -259,6 +288,8 @@ github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/
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@@ -267,25 +298,34 @@ github.com/mitchellh/cli v1.0.0/go.mod h1:hNIlj7HEI86fIcpObd7a0FcrxTWetlwJDGcceT
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 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
@@ -348,8 +390,11 @@ github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PK
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/subosito/gotenv v1.2.0/go.mod h1:N0PQaV/YGNqwC0u51sEeR/aUtSLEXKX9iv69rRypqCw=
 github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
-github.com/urfave/cli/v2 v2.16.3 h1:gHoFIwpPjoyIMbJp/VFd+/vuD0dAgFK4B6DpEMFJfQk=
-github.com/urfave/cli/v2 v2.16.3/go.mod h1:1CNUng3PtjQMtRzJO4FMXBQvkGtuYRxxiR9xMa7jMwI=
+github.com/ugorji/go v1.2.7/go.mod h1:nF9osbDWLy6bDVv/Rtoh6QgnvNDpmCalQV5urGCCS6M=
+github.com/ugorji/go/codec v1.2.7 h1:YPXUKf7fYbp/y8xloBqZOw2qaVggbfwMlI8WM3wZUJ0=
+github.com/ugorji/go/codec v1.2.7/go.mod h1:WGN1fab3R1fzQlVQTkfxVtIBhWDRqOviHU95kRgeqEY=
+github.com/urfave/cli/v2 v2.20.3 h1:lOgGidH/N5loaigd9HjFsOIhXSTrzl7tBpHswZ428w4=
+github.com/urfave/cli/v2 v2.20.3/go.mod h1:1CNUng3PtjQMtRzJO4FMXBQvkGtuYRxxiR9xMa7jMwI=
 github.com/vmihailenco/msgpack/v5 v5.3.5 h1:5gO0H1iULLWGhs2H5tbAHIZTV8/cYafcFOr9znI5mJU=
 github.com/vmihailenco/msgpack/v5 v5.3.5/go.mod h1:7xyJ9e+0+9SaZT0Wt1RGleJXzli6Q/V5KbhBonMG9jc=
 github.com/vmihailenco/tagparser/v2 v2.0.0 h1:y09buUbR+b5aycVFQs/g70pqKVZNBmxwAhO7/IwNM9g=
@@ -358,12 +403,14 @@ github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q
 github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 h1:bAn7/zixMGCfxrRTfdpNzjtPYqr8smhKouy9mxVdGPU=
 github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673/go.mod h1:N3UwUGtsrSj3ccvlPHLoLsHnpR27oXr4ZE984MbSER8=
 github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
+github.com/zclconf/go-cty v1.11.0 h1:726SxLdi2SDnjY+BStqB9J1hNp4+2WlzyXLuimibIe0=
+github.com/zclconf/go-cty v1.11.0/go.mod h1:s9IfD1LK5ccNMSWCVFCE2rJfHiZgi7JijgeWIMfhLvA=
 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
-go.etcd.io/bbolt v1.3.6 h1:/ecaJf0sk1l4l6V4awd65v2C3ILy7MSj+s/x1ADCIMU=
-go.etcd.io/bbolt v1.3.6/go.mod h1:qXsaaIqmgQH0T+OPdb99Bf+PKfBBQVAdyD6TY9G8XM4=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
 go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
+go.uber.org/goleak v1.2.0 h1:xqgm/S+aQvhWFTtR0XK3Jvg7z8kGV8P4X14IzwN3Eqk=
+go.uber.org/goleak v1.2.0/go.mod h1:XJYK+MuIchqpmGmUSAzotztawfKvYLUIgg7guXrwVUo=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
 go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
@@ -374,17 +421,18 @@ golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
-golang.org/x/crypto v0.0.0-20220919173607-35f4265a4bc0 h1:a5Yg6ylndHHYJqIPrdq0AhvR6KTvDTAvgBtaidhEevY=
-golang.org/x/crypto v0.0.0-20220919173607-35f4265a4bc0/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/crypto v0.1.0 h1:MDRAIl0xIo9Io2xV565hzXHw3zVseKrJKodhohM5CjU=
+golang.org/x/crypto v0.1.0/go.mod h1:RecgLatLF4+eUMCP1PoPZQb+cVrJcOPbHkTkbkB9sbw=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
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 golang.org/x/exp v0.0.0-20190829153037-c13cbed26979/go.mod h1:86+5VVa7VpoJ4kLfm080zCjGlMRFzhUhsZKEZO7MGek=
 golang.org/x/exp v0.0.0-20191030013958-a1ab85dbe136/go.mod h1:JXzH8nQsPlswgeRAPE3MuO9GYsAcnJvJ4vnMwN/5qkY=
-golang.org/x/exp v0.0.0-20220921164117-439092de6870 h1:j8b6j9gzSigH28O5SjSpQSSh9lFd6f5D/q0aHjNTulc=
-golang.org/x/exp v0.0.0-20220921164117-439092de6870/go.mod h1:cyybsKvd6eL0RnXn6p/Grxp8F5bW7iYuBgsNCOHpMYE=
+golang.org/x/exp v0.0.0-20221023144134-a1e5550cf13e h1:SkwG94eNiiYJhbeDE018Grw09HIN/KB9NlRmZsrzfWs=
+golang.org/x/exp v0.0.0-20221023144134-a1e5550cf13e/go.mod h1:cyybsKvd6eL0RnXn6p/Grxp8F5bW7iYuBgsNCOHpMYE=
 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
 golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
@@ -393,6 +441,7 @@ golang.org/x/lint v0.0.0-20190301231843-5614ed5bae6f/go.mod h1:UVdnD1Gm6xHRNCYTk
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/lint v0.0.0-20190409202823-959b441ac422/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/lint v0.0.0-20190909230951-414d861bb4ac/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
+golang.org/x/lint v0.0.0-20190930215403-16217165b5de h1:5hukYrvBGR8/eNkX5mdUezrA6JiaEZDtJb9Ei+1LlBs=
 golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
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@@ -424,8 +473,8 @@ golang.org/x/net v0.0.0-20210726213435-c6fcb2dbf985/go.mod h1:9nx3DQGgdP8bBQD5qx
 golang.org/x/net v0.0.0-20210916014120-12bc252f5db8/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20211029224645-99673261e6eb/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20220921203646-d300de134e69 h1:hUJpGDpnfwdJW8iNypFjmSY0sCBEL+spFTZ2eO+Sfps=
-golang.org/x/net v0.0.0-20220921203646-d300de134e69/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
+golang.org/x/net v0.1.0 h1:hZ/3BUoy5aId7sCpA/Tc5lt8DkFgdVS2onTpJsZ/fl0=
+golang.org/x/net v0.1.0/go.mod h1:Cx3nUiGt4eDBEyega/BKRp+/AlGL8hYe7U9odMt2Cco=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -435,7 +484,8 @@ golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4 h1:uVc8UZUe6tr40fFVnUP5Oj+veunVezqYl9z7DYw9xzw=
+golang.org/x/sync v0.0.0-20220907140024-f12130a52804 h1:0SH2R3f1b1VmIMG7BXbEZCBUu2dKmHschSmjqGUrW8A=
+golang.org/x/sync v0.0.0-20220907140024-f12130a52804/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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@@ -453,20 +503,20 @@ golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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-golang.org/x/sys v0.0.0-20220919091848-fb04ddd9f9c8 h1:h+EGohizhe9XlX18rfpa8k8RAc5XyaeamM+0VHRd4lc=
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+golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U=
+golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
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@@ -474,8 +524,9 @@ golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.5-0.20201125200606-c27b9fd57aec/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.4.0 h1:BrVqGRd7+k1DiOgtnFvAkoQEWQvBc25ouMJM6429SFg=
+golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180221164845-07fd8470d635/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
@@ -499,8 +550,8 @@ golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20200117012304-6edc0a871e69/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.6-0.20210726203631-07bc1bf47fb2/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
-golang.org/x/tools v0.1.12 h1:VveCTK38A2rkS8ZqFY25HIDFscX5X9OoEhJd3quQmXU=
-golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.1.13-0.20220804200503-81c7dc4e4efa h1:uKcci2q7Qtp6nMTC/AAvfNUAldFtJuHWV9/5QWiypts=
+golang.org/x/tools v0.1.13-0.20220804200503-81c7dc4e4efa/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -528,8 +579,8 @@ google.golang.org/genproto v0.0.0-20220921223823-23cae91e6737/go.mod h1:2r/26NEF
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
-google.golang.org/grpc v1.49.0 h1:WTLtQzmQori5FUH25Pq4WT22oCsv8USpQ+F6rqtsmxw=
-google.golang.org/grpc v1.49.0/go.mod h1:ZgQEeidpAuNRZ8iRrlBKXZQP1ghovWIVhdJRyCDK+GI=
+google.golang.org/grpc v1.50.1 h1:DS/BukOZWp8s6p4Dt/tOaJaTQyPyOoCcrjroHuCeLzY=
+google.golang.org/grpc v1.50.1/go.mod h1:ZgQEeidpAuNRZ8iRrlBKXZQP1ghovWIVhdJRyCDK+GI=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
@@ -548,8 +599,11 @@ gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

internal/api/api.go

@@ -1,85 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-// Package api provides HTTP API of the Bridge.
-//
-// API endpoints:
-//   - /focus, see focusHandler
-package api
-
-import (
-	"fmt"
-	"net/http"
-	"time"
-
-	"github.com/ProtonMail/proton-bridge/v2/internal/bridge"
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/settings"
-	"github.com/ProtonMail/proton-bridge/v2/internal/events"
-	"github.com/ProtonMail/proton-bridge/v2/pkg/listener"
-	"github.com/ProtonMail/proton-bridge/v2/pkg/ports"
-	"github.com/sirupsen/logrus"
-)
-
-var log = logrus.WithField("pkg", "api") //nolint:gochecknoglobals
-
-type apiServer struct {
-	host          string
-	settings      *settings.Settings
-	eventListener listener.Listener
-}
-
-// NewAPIServer returns prepared API server struct.
-func NewAPIServer(settings *settings.Settings, eventListener listener.Listener) *apiServer { //nolint:revive
-	return &apiServer{
-		host:          bridge.Host,
-		settings:      settings,
-		eventListener: eventListener,
-	}
-}
-
-// Starts the server.
-func (api *apiServer) ListenAndServe() {
-	mux := http.NewServeMux()
-	mux.HandleFunc("/focus", wrapper(api, focusHandler))
-
-	addr := api.getAddress()
-	server := &http.Server{
-		Addr:              addr,
-		Handler:           mux,
-		ReadHeaderTimeout: 5 * time.Second, // fix gosec G112 (vulnerability to [Slowloris](https://www.cloudflare.com/en-gb/learning/ddos/ddos-attack-tools/slowloris/) attack).
-	}
-
-	log.Info("API listening at ", addr)
-	if err := server.ListenAndServe(); err != nil {
-		api.eventListener.Emit(events.ErrorEvent, "API failed: "+err.Error())
-		log.Error("API failed: ", err)
-	}
-	defer server.Close() //nolint:errcheck
-}
-
-func (api *apiServer) getAddress() string {
-	port := api.settings.GetInt(settings.APIPortKey)
-	newPort := ports.FindFreePortFrom(port)
-	if newPort != port {
-		api.settings.SetInt(settings.APIPortKey, newPort)
-	}
-	return getAPIAddress(api.host, newPort)
-}
-
-func getAPIAddress(host string, port int) string {
-	return fmt.Sprintf("%s:%d", host, port)
-}

internal/api/ctx.go

@@ -1,51 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-package api
-
-import (
-	"net/http"
-
-	"github.com/ProtonMail/proton-bridge/v2/pkg/listener"
-)
-
-// httpHandler with Go's Response and Request.
-type httpHandler func(http.ResponseWriter, *http.Request)
-
-// handler with our context.
-type handler func(handlerContext) error
-
-type handlerContext struct {
-	req           *http.Request
-	resp          http.ResponseWriter
-	eventListener listener.Listener
-}
-
-func wrapper(api *apiServer, callback handler) httpHandler {
-	return func(w http.ResponseWriter, req *http.Request) {
-		ctx := handlerContext{
-			req:           req,
-			resp:          w,
-			eventListener: api.eventListener,
-		}
-		err := callback(ctx)
-		if err != nil {
-			log.Error("API callback of ", req.URL, " failed: ", err)
-			http.Error(w, err.Error(), 500)
-		}
-	}
-}

internal/api/focus.go

@@ -1,51 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-package api
-
-import (
-	"fmt"
-	"net/http"
-
-	"github.com/ProtonMail/proton-bridge/v2/internal/bridge"
-	"github.com/ProtonMail/proton-bridge/v2/internal/events"
-)
-
-// focusHandler should be called from other instances (attempt to start bridge
-// for the second time) to get focus in the currently running instance.
-func focusHandler(ctx handlerContext) error {
-	log.Info("Focus from other instance")
-	ctx.eventListener.Emit(events.SecondInstanceEvent, "")
-	fmt.Fprintf(ctx.resp, "OK")
-	return nil
-}
-
-// CheckOtherInstanceAndFocus is helper for new instances to check if there is
-// already a running instance and get it's focus.
-func CheckOtherInstanceAndFocus(port int) error {
-	addr := getAPIAddress(bridge.Host, port)
-	resp, err := (&http.Client{}).Get("http://" + addr + "/focus")
-	if err != nil {
-		return err
-	}
-	defer resp.Body.Close() //nolint:errcheck
-
-	if resp.StatusCode != 200 {
-		log.Error("Focus error: ", resp.StatusCode)
-	}
-	return nil
-}

internal/app/app.go

@@ -0,0 +1,409 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package app
+
+import (
+	"fmt"
+	"net/http"
+	"net/http/cookiejar"
+	"os"
+	"path/filepath"
+	"runtime"
+
+	"github.com/Masterminds/semver/v3"
+	"github.com/ProtonMail/proton-bridge/v3/internal/bridge"
+	"github.com/ProtonMail/proton-bridge/v3/internal/constants"
+	"github.com/ProtonMail/proton-bridge/v3/internal/cookies"
+	"github.com/ProtonMail/proton-bridge/v3/internal/crash"
+	"github.com/ProtonMail/proton-bridge/v3/internal/events"
+	"github.com/ProtonMail/proton-bridge/v3/internal/focus"
+	"github.com/ProtonMail/proton-bridge/v3/internal/locations"
+	"github.com/ProtonMail/proton-bridge/v3/internal/logging"
+	"github.com/ProtonMail/proton-bridge/v3/internal/sentry"
+	"github.com/ProtonMail/proton-bridge/v3/internal/useragent"
+	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
+	"github.com/ProtonMail/proton-bridge/v3/pkg/restarter"
+	"github.com/pkg/profile"
+	"github.com/sirupsen/logrus"
+	"github.com/urfave/cli/v2"
+)
+
+// Visible flags.
+const (
+	flagCPUProfile      = "cpu-prof"
+	flagCPUProfileShort = "p"
+
+	flagMemProfile      = "mem-prof"
+	flagMemProfileShort = "m"
+
+	flagLogLevel      = "log-level"
+	flagLogLevelShort = "l"
+
+	flagGRPC      = "grpc"
+	flagGRPCShort = "g"
+
+	flagCLI      = "cli"
+	flagCLIShort = "c"
+
+	flagNonInteractive      = "noninteractive"
+	flagNonInteractiveShort = "n"
+
+	flagLogIMAP = "log-imap"
+	flagLogSMTP = "log-smtp"
+)
+
+// Hidden flags.
+const (
+	flagLauncher  = "launcher"
+	flagNoWindow  = "no-window"
+	flagParentPID = "parent-pid"
+)
+
+const (
+	appUsage = "Proton Mail IMAP and SMTP Bridge"
+)
+
+func New() *cli.App { //nolint:funlen
+	app := cli.NewApp()
+
+	app.Name = constants.FullAppName
+	app.Usage = appUsage
+	app.Flags = []cli.Flag{
+		&cli.BoolFlag{
+			Name:    flagCPUProfile,
+			Aliases: []string{flagCPUProfileShort},
+			Usage:   "Generate CPU profile",
+		},
+		&cli.BoolFlag{
+			Name:    flagMemProfile,
+			Aliases: []string{flagMemProfileShort},
+			Usage:   "Generate memory profile",
+		},
+		&cli.StringFlag{
+			Name:    flagLogLevel,
+			Aliases: []string{flagLogLevelShort},
+			Usage:   "Set the log level (one of panic, fatal, error, warn, info, debug)",
+		},
+		&cli.BoolFlag{
+			Name:    flagGRPC,
+			Aliases: []string{flagGRPCShort},
+			Usage:   "Start the gRPC service",
+		},
+		&cli.BoolFlag{
+			Name:    flagCLI,
+			Aliases: []string{flagCLIShort},
+			Usage:   "Start the command line interface",
+		},
+		&cli.BoolFlag{
+			Name:    flagNonInteractive,
+			Aliases: []string{flagNonInteractiveShort},
+			Usage:   "Start the app in non-interactive mode",
+		},
+		&cli.StringFlag{
+			Name:  flagLogIMAP,
+			Usage: "Enable logging of IMAP communications (all|client|server) (may contain decrypted data!)",
+		},
+		&cli.BoolFlag{
+			Name:  flagLogSMTP,
+			Usage: "Enable logging of SMTP communications (may contain decrypted data!)",
+		},
+
+		// Hidden flags
+		&cli.BoolFlag{
+			Name:   flagNoWindow,
+			Usage:  "Don't show window after start",
+			Hidden: true,
+		},
+		&cli.StringFlag{
+			Name:   flagLauncher,
+			Usage:  "The launcher used to start the app",
+			Hidden: true,
+		},
+		&cli.IntFlag{
+			Name:   flagParentPID,
+			Usage:  "Process ID of the parent",
+			Hidden: true,
+			Value:  -1,
+		},
+	}
+
+	app.Action = run
+
+	return app
+}
+
+func run(c *cli.Context) error { //nolint:funlen
+	// Get the current bridge version.
+	version, err := semver.NewVersion(constants.Version)
+	if err != nil {
+		return fmt.Errorf("could not create version: %w", err)
+	}
+
+	// Create a user agent that will be used for all requests.
+	identifier := useragent.New()
+
+	// Create a new Sentry client that will be used to report crashes etc.
+	reporter := sentry.NewReporter(constants.FullAppName, constants.Version, identifier)
+
+	// Determine the exe that should be used to restart/autostart the app.
+	// By default, this is the launcher, if used. Otherwise, we try to get
+	// the current exe, and fall back to os.Args[0] if that fails.
+	var exe string
+
+	if launcher := c.String(flagLauncher); launcher != "" {
+		exe = launcher
+	} else if executable, err := os.Executable(); err == nil {
+		exe = executable
+	} else {
+		exe = os.Args[0]
+	}
+
+	migrationErr := migrateOldVersions()
+
+	// Run with profiling if requested.
+	return withProfiler(c, func() error {
+		// Restart the app if requested.
+		return withRestarter(exe, func(restarter *restarter.Restarter) error {
+			// Handle crashes with various actions.
+			return withCrashHandler(restarter, reporter, func(crashHandler *crash.Handler, quitCh <-chan struct{}) error {
+				// Load the locations where we store our files.
+				return WithLocations(func(locations *locations.Locations) error {
+					// Migrate the keychain helper.
+					if err := migrateKeychainHelper(locations); err != nil {
+						logrus.WithError(err).Error("Failed to migrate keychain helper")
+					}
+
+					// Initialize logging.
+					return withLogging(c, crashHandler, locations, func() error {
+						// If there was an error during migration, log it now.
+						if migrationErr != nil {
+							logrus.WithError(migrationErr).Error("Failed to migrate old app data")
+						}
+
+						// Ensure we are the only instance running.
+						return withSingleInstance(locations, version, func() error {
+							// Unlock the encrypted vault.
+							return WithVault(locations, func(vault *vault.Vault, insecure, corrupt bool) error {
+								if !vault.Migrated() {
+									// Migrate old settings into the vault.
+									if err := migrateOldSettings(vault); err != nil {
+										logrus.WithError(err).Error("Failed to migrate old settings")
+									}
+
+									// Migrate old accounts into the vault.
+									if err := migrateOldAccounts(locations, vault); err != nil {
+										logrus.WithError(err).Error("Failed to migrate old accounts")
+									}
+
+									// The vault has been migrated.
+									if err := vault.SetMigrated(); err != nil {
+										logrus.WithError(err).Error("Failed to mark vault as migrated")
+									}
+								}
+
+								// Load the cookies from the vault.
+								return withCookieJar(vault, func(cookieJar http.CookieJar) error {
+									// Create a new bridge instance.
+									return withBridge(c, exe, locations, version, identifier, crashHandler, reporter, vault, cookieJar, func(b *bridge.Bridge, eventCh <-chan events.Event) error {
+										if insecure {
+											logrus.Warn("The vault key could not be retrieved; the vault will not be encrypted")
+											b.PushError(bridge.ErrVaultInsecure)
+										}
+
+										if corrupt {
+											logrus.Warn("The vault is corrupt and has been wiped")
+											b.PushError(bridge.ErrVaultCorrupt)
+										}
+
+										// Run the frontend.
+										return runFrontend(c, crashHandler, restarter, locations, b, eventCh, quitCh, c.Int(flagParentPID))
+									})
+								})
+							})
+						})
+					})
+				})
+			})
+		})
+	})
+}
+
+// If there's another instance already running, try to raise it and exit.
+func withSingleInstance(locations *locations.Locations, version *semver.Version, fn func() error) error {
+	logrus.Debug("Checking for other instances")
+	defer logrus.Debug("Single instance stopped")
+
+	lock, err := checkSingleInstance(locations.GetLockFile(), version)
+	if err != nil {
+		logrus.Info("Another instance is already running; raising it")
+
+		if ok := focus.TryRaise(); !ok {
+			return fmt.Errorf("another instance is already running but it could not be raised")
+		}
+
+		logrus.Info("The other instance has been raised")
+
+		return nil
+	}
+
+	defer func() {
+		if err := lock.Close(); err != nil {
+			logrus.WithError(err).Error("Failed to close lock file")
+		}
+	}()
+
+	return fn()
+}
+
+// Initialize our logging system.
+func withLogging(c *cli.Context, crashHandler *crash.Handler, locations *locations.Locations, fn func() error) error {
+	logrus.Debug("Initializing logging")
+	defer logrus.Debug("Logging stopped")
+
+	// Get a place to keep our logs.
+	logsPath, err := locations.ProvideLogsPath()
+	if err != nil {
+		return fmt.Errorf("could not provide logs path: %w", err)
+	}
+
+	logrus.WithField("path", logsPath).Debug("Received logs path")
+
+	// Initialize logging.
+	if err := logging.Init(logsPath, c.String(flagLogLevel)); err != nil {
+		return fmt.Errorf("could not initialize logging: %w", err)
+	}
+
+	// Ensure we dump a stack trace if we crash.
+	crashHandler.AddRecoveryAction(logging.DumpStackTrace(logsPath))
+
+	logrus.
+		WithField("appName", constants.FullAppName).
+		WithField("version", constants.Version).
+		WithField("revision", constants.Revision).
+		WithField("build", constants.BuildTime).
+		WithField("runtime", runtime.GOOS).
+		WithField("args", os.Args).
+		Info("Run app")
+
+	return fn()
+}
+
+// WithLocations provides access to locations where we store our files.
+func WithLocations(fn func(*locations.Locations) error) error {
+	logrus.Debug("Creating locations")
+	defer logrus.Debug("Locations stopped")
+
+	// Create a locations provider to determine where to store our files.
+	provider, err := locations.NewDefaultProvider(filepath.Join(constants.VendorName, constants.ConfigName))
+	if err != nil {
+		return fmt.Errorf("could not create locations provider: %w", err)
+	}
+
+	// Create a new locations object that will be used to provide paths to store files.
+	locations := locations.New(provider, constants.ConfigName)
+	defer func() {
+		if err := locations.Clean(); err != nil {
+			logrus.WithError(err).Error("Failed to clean locations")
+		}
+	}()
+
+	return fn(locations)
+}
+
+// Start profiling if requested.
+func withProfiler(c *cli.Context, fn func() error) error {
+	defer logrus.Debug("Profiler stopped")
+
+	if c.Bool(flagCPUProfile) {
+		logrus.Debug("Running with CPU profiling")
+		defer profile.Start(profile.CPUProfile, profile.ProfilePath(".")).Stop()
+	}
+
+	if c.Bool(flagMemProfile) {
+		logrus.Debug("Running with memory profiling")
+		defer profile.Start(profile.MemProfile, profile.MemProfileAllocs, profile.ProfilePath(".")).Stop()
+	}
+
+	return fn()
+}
+
+// Restart the app if necessary.
+func withRestarter(exe string, fn func(*restarter.Restarter) error) error {
+	logrus.Debug("Creating restarter")
+	defer logrus.Debug("Restarter stopped")
+
+	restarter := restarter.New(exe)
+	defer restarter.Restart()
+
+	return fn(restarter)
+}
+
+// Handle crashes if they occur.
+func withCrashHandler(restarter *restarter.Restarter, reporter *sentry.Reporter, fn func(*crash.Handler, <-chan struct{}) error) error {
+	logrus.Debug("Creating crash handler")
+	defer logrus.Debug("Crash handler stopped")
+
+	crashHandler := crash.NewHandler(crash.ShowErrorNotification(constants.FullAppName))
+	defer crashHandler.HandlePanic()
+
+	// On crash, send crash report to Sentry.
+	crashHandler.AddRecoveryAction(reporter.ReportException)
+
+	// On crash, notify the user and restart the app.
+	crashHandler.AddRecoveryAction(crash.ShowErrorNotification(constants.FullAppName))
+
+	// On crash, restart the app.
+	crashHandler.AddRecoveryAction(func(any) error { restarter.Set(true, true); return nil })
+
+	// quitCh is closed when the app is quitting.
+	quitCh := make(chan struct{})
+
+	// On crash, quit the app.
+	crashHandler.AddRecoveryAction(func(any) error { close(quitCh); return nil })
+
+	return fn(crashHandler, quitCh)
+}
+
+// Use a custom cookie jar to persist values across runs.
+func withCookieJar(vault *vault.Vault, fn func(http.CookieJar) error) error {
+	logrus.Debug("Creating cookie jar")
+	defer logrus.Debug("Cookie jar stopped")
+
+	// Create the underlying cookie jar.
+	jar, err := cookiejar.New(nil)
+	if err != nil {
+		return fmt.Errorf("could not create cookie jar: %w", err)
+	}
+
+	// Create the cookie jar which persists to the vault.
+	persister, err := cookies.NewCookieJar(jar, vault)
+	if err != nil {
+		return fmt.Errorf("could not create cookie jar: %w", err)
+	}
+
+	// Persist the cookies to the vault when we close.
+	defer func() {
+		logrus.Debug("Persisting cookies")
+
+		if err := persister.PersistCookies(); err != nil {
+			logrus.WithError(err).Error("Failed to persist cookies")
+		}
+	}()
+
+	return fn(persister)
+}

internal/app/base/args.go

@@ -1,35 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-package base
-
-import "strings"
-
-// StripProcessSerialNumber removes additional flag from macOS.
-// More info:
-// http://mirror.informatimago.com/next/developer.apple.com/documentation/Carbon/Reference/Process_Manager/prmref_main/data_type_5.html#//apple_ref/doc/uid/TP30000208/C001951
-func StripProcessSerialNumber(args []string) []string {
-	res := args[:0]
-
-	for _, arg := range args {
-		if !strings.Contains(arg, "-psn_") {
-			res = append(res, arg)
-		}
-	}
-
-	return res
-}

internal/app/base/base.go

@@ -1,424 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-// Package base implements a common application base currently shared by bridge and IE.
-// The base includes the following:
-//   - access to standard filesystem locations like config, cache, logging dirs
-//   - an extensible crash handler
-//   - versioned cache directory
-//   - persistent settings
-//   - event listener
-//   - credentials store
-//   - pmapi Manager
-//
-// In addition, the base initialises logging and reacts to command line arguments
-// which control the log verbosity and enable cpu/memory profiling.
-package base
-
-import (
-	"math/rand"
-	"os"
-	"path/filepath"
-	"runtime"
-	"runtime/pprof"
-	"time"
-
-	"github.com/Masterminds/semver/v3"
-	"github.com/ProtonMail/go-autostart"
-	"github.com/ProtonMail/gopenpgp/v2/crypto"
-	"github.com/ProtonMail/proton-bridge/v2/internal/api"
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/cache"
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/settings"
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/tls"
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/useragent"
-	"github.com/ProtonMail/proton-bridge/v2/internal/constants"
-	"github.com/ProtonMail/proton-bridge/v2/internal/cookies"
-	"github.com/ProtonMail/proton-bridge/v2/internal/crash"
-	"github.com/ProtonMail/proton-bridge/v2/internal/events"
-	"github.com/ProtonMail/proton-bridge/v2/internal/locations"
-	"github.com/ProtonMail/proton-bridge/v2/internal/logging"
-	"github.com/ProtonMail/proton-bridge/v2/internal/sentry"
-	"github.com/ProtonMail/proton-bridge/v2/internal/updater"
-	"github.com/ProtonMail/proton-bridge/v2/internal/users/credentials"
-	"github.com/ProtonMail/proton-bridge/v2/internal/versioner"
-	"github.com/ProtonMail/proton-bridge/v2/pkg/keychain"
-	"github.com/ProtonMail/proton-bridge/v2/pkg/listener"
-	"github.com/ProtonMail/proton-bridge/v2/pkg/pmapi"
-	"github.com/sirupsen/logrus"
-	"github.com/urfave/cli/v2"
-)
-
-const (
-	flagCPUProfile      = "cpu-prof"
-	flagCPUProfileShort = "p"
-	flagMemProfile      = "mem-prof"
-	flagMemProfileShort = "m"
-	flagLogLevel        = "log-level"
-	flagLogLevelShort   = "l"
-	// FlagCLI indicate to start with command line interface.
-	FlagCLI      = "cli"
-	flagCLIShort = "c"
-	flagRestart  = "restart"
-	FlagLauncher = "launcher"
-	FlagNoWindow = "no-window"
-)
-
-type Base struct {
-	SentryReporter *sentry.Reporter
-	CrashHandler   *crash.Handler
-	Locations      *locations.Locations
-	Settings       *settings.Settings
-	Lock           *os.File
-	Cache          *cache.Cache
-	Listener       listener.Listener
-	Creds          *credentials.Store
-	CM             pmapi.Manager
-	CookieJar      *cookies.Jar
-	UserAgent      *useragent.UserAgent
-	Updater        *updater.Updater
-	Versioner      *versioner.Versioner
-	TLS            *tls.TLS
-	Autostart      *autostart.App
-
-	Name           string // the app's name
-	usage          string // the app's usage description
-	command        string // the command used to launch the app (either the exe path or the launcher path)
-	restart        bool   // whether the app is currently set to restart
-	launcher       string // launcher to be used if not set in args
-	mainExecutable string // mainExecutable  the main executable process.
-
-	teardown []func() error // actions to perform when app is exiting
-}
-
-func New( //nolint:funlen
-	appName,
-	appUsage,
-	configName,
-	updateURLName,
-	keychainName,
-	cacheVersion string,
-) (*Base, error) {
-	userAgent := useragent.New()
-
-	sentryReporter := sentry.NewReporter(appName, constants.Version, userAgent)
-
-	crashHandler := crash.NewHandler(
-		sentryReporter.ReportException,
-		crash.ShowErrorNotification(appName),
-	)
-	defer crashHandler.HandlePanic()
-
-	rand.Seed(time.Now().UnixNano())
-	os.Args = StripProcessSerialNumber(os.Args)
-
-	locationsProvider, err := locations.NewDefaultProvider(filepath.Join(constants.VendorName, configName))
-	if err != nil {
-		return nil, err
-	}
-
-	locations := locations.New(locationsProvider, configName)
-
-	logsPath, err := locations.ProvideLogsPath()
-	if err != nil {
-		return nil, err
-	}
-	if err := logging.Init(logsPath); err != nil {
-		return nil, err
-	}
-	crashHandler.AddRecoveryAction(logging.DumpStackTrace(logsPath))
-
-	if err := migrateFiles(configName); err != nil {
-		logrus.WithError(err).Warn("Old config files could not be migrated")
-	}
-
-	if err := locations.Clean(); err != nil {
-		return nil, err
-	}
-
-	settingsPath, err := locations.ProvideSettingsPath()
-	if err != nil {
-		return nil, err
-	}
-	settingsObj := settings.New(settingsPath)
-
-	lock, err := checkSingleInstance(locations.GetLockFile(), settingsObj)
-	if err != nil {
-		logrus.WithError(err).Warnf("%v is already running", appName)
-		return nil, api.CheckOtherInstanceAndFocus(settingsObj.GetInt(settings.APIPortKey))
-	}
-
-	if err := migrateRebranding(settingsObj, keychainName); err != nil {
-		logrus.WithError(err).Warn("Rebranding migration failed")
-	}
-
-	cachePath, err := locations.ProvideCachePath()
-	if err != nil {
-		return nil, err
-	}
-	cache, err := cache.New(cachePath, cacheVersion)
-	if err != nil {
-		return nil, err
-	}
-	if err := cache.RemoveOldVersions(); err != nil {
-		return nil, err
-	}
-
-	listener := listener.New()
-	events.SetupEvents(listener)
-
-	// If we can't load the keychain for whatever reason,
-	// we signal to frontend and supply a dummy keychain that always returns errors.
-	kc, err := keychain.NewKeychain(settingsObj, keychainName)
-	if err != nil {
-		listener.Emit(events.CredentialsErrorEvent, err.Error())
-		kc = keychain.NewMissingKeychain()
-	}
-
-	cfg := pmapi.NewConfig(configName, constants.Version)
-	cfg.GetUserAgent = userAgent.String
-	cfg.UpgradeApplicationHandler = func() { listener.Emit(events.UpgradeApplicationEvent, "") }
-	cfg.TLSIssueHandler = func() { listener.Emit(events.TLSCertIssue, "") }
-
-	cm := pmapi.New(cfg)
-
-	sentryReporter.SetClientFromManager(cm)
-
-	cm.AddConnectionObserver(pmapi.NewConnectionObserver(
-		func() { listener.Emit(events.InternetConnChangedEvent, events.InternetOff) },
-		func() { listener.Emit(events.InternetConnChangedEvent, events.InternetOn) },
-	))
-
-	jar, err := cookies.NewCookieJar(settingsObj)
-	if err != nil {
-		return nil, err
-	}
-
-	cm.SetCookieJar(jar)
-
-	key, err := crypto.NewKeyFromArmored(updater.DefaultPublicKey)
-	if err != nil {
-		return nil, err
-	}
-
-	kr, err := crypto.NewKeyRing(key)
-	if err != nil {
-		return nil, err
-	}
-
-	updatesDir, err := locations.ProvideUpdatesPath()
-	if err != nil {
-		return nil, err
-	}
-
-	versioner := versioner.New(updatesDir)
-	installer := updater.NewInstaller(versioner)
-	updater := updater.New(
-		cm,
-		installer,
-		settingsObj,
-		kr,
-		semver.MustParse(constants.Version),
-		updateURLName,
-		runtime.GOOS,
-	)
-
-	exe, err := os.Executable()
-	if err != nil {
-		return nil, err
-	}
-
-	autostart := &autostart.App{
-		Name:        startupNameForRebranding(appName),
-		DisplayName: appName,
-		Exec:        []string{exe, "--" + FlagNoWindow},
-	}
-
-	return &Base{
-		SentryReporter: sentryReporter,
-		CrashHandler:   crashHandler,
-		Locations:      locations,
-		Settings:       settingsObj,
-		Lock:           lock,
-		Cache:          cache,
-		Listener:       listener,
-		Creds:          credentials.NewStore(kc),
-		CM:             cm,
-		CookieJar:      jar,
-		UserAgent:      userAgent,
-		Updater:        updater,
-		Versioner:      versioner,
-		TLS:            tls.New(settingsPath),
-		Autostart:      autostart,
-
-		Name:  appName,
-		usage: appUsage,
-
-		// By default, the command is the app's executable.
-		// This can be changed at runtime by using the "--launcher" flag.
-		command: exe,
-		// By default, the command is the app's executable.
-		// This can be changed at runtime by summoning the SetMainExecutable gRPC call.
-		mainExecutable: exe,
-	}, nil
-}
-
-func (b *Base) NewApp(mainLoop func(*Base, *cli.Context) error) *cli.App {
-	app := cli.NewApp()
-
-	app.Name = b.Name
-	app.Usage = b.usage
-	app.Version = constants.Version
-	app.Action = b.wrapMainLoop(mainLoop)
-	app.Flags = []cli.Flag{
-		&cli.BoolFlag{
-			Name:    flagCPUProfile,
-			Aliases: []string{flagCPUProfileShort},
-			Usage:   "Generate CPU profile",
-		},
-		&cli.BoolFlag{
-			Name:    flagMemProfile,
-			Aliases: []string{flagMemProfileShort},
-			Usage:   "Generate memory profile",
-		},
-		&cli.StringFlag{
-			Name:    flagLogLevel,
-			Aliases: []string{flagLogLevelShort},
-			Usage:   "Set the log level (one of panic, fatal, error, warn, info, debug)",
-		},
-		&cli.BoolFlag{
-			Name:    FlagCLI,
-			Aliases: []string{flagCLIShort},
-			Usage:   "Use command line interface",
-		},
-		&cli.BoolFlag{
-			Name:  FlagNoWindow,
-			Usage: "Don't show window after start",
-		},
-		&cli.StringFlag{
-			Name:   flagRestart,
-			Usage:  "The number of times the application has already restarted",
-			Hidden: true,
-		},
-		&cli.StringFlag{
-			Name:   FlagLauncher,
-			Usage:  "The launcher to use to restart the application",
-			Hidden: true,
-		},
-	}
-
-	return app
-}
-
-// SetToRestart sets the app to restart the next time it is closed.
-func (b *Base) SetToRestart() {
-	b.restart = true
-}
-
-func (b *Base) ForceLauncher(launcher string) {
-	b.launcher = launcher
-	b.setupLauncher(launcher)
-}
-
-func (b *Base) SetMainExecutable(exe string) {
-	logrus.Info("Main Executable set to ", exe)
-	b.mainExecutable = exe
-}
-
-// AddTeardownAction adds an action to perform during app teardown.
-func (b *Base) AddTeardownAction(fn func() error) {
-	b.teardown = append(b.teardown, fn)
-}
-
-func (b *Base) wrapMainLoop(appMainLoop func(*Base, *cli.Context) error) cli.ActionFunc { //nolint:funlen
-	return func(c *cli.Context) error {
-		defer b.CrashHandler.HandlePanic()
-		defer func() { _ = b.Lock.Close() }()
-
-		// If launcher was used to start the app, use that for restart
-		// and autostart.
-		if launcher := c.String(FlagLauncher); launcher != "" {
-			b.setupLauncher(launcher)
-		}
-
-		if c.Bool(flagCPUProfile) {
-			startCPUProfile()
-			defer pprof.StopCPUProfile()
-		}
-
-		if c.Bool(flagMemProfile) {
-			defer makeMemoryProfile()
-		}
-
-		logging.SetLevel(c.String(flagLogLevel))
-		b.CM.SetLogging(logrus.WithField("pkg", "pmapi"), logrus.GetLevel() == logrus.TraceLevel)
-
-		logrus.
-			WithField("appName", b.Name).
-			WithField("version", constants.Version).
-			WithField("revision", constants.Revision).
-			WithField("build", constants.BuildTime).
-			WithField("runtime", runtime.GOOS).
-			WithField("args", os.Args).
-			Info("Run app")
-
-		b.CrashHandler.AddRecoveryAction(func(interface{}) error {
-			sentry.Flush(2 * time.Second)
-
-			if c.Int(flagRestart) > maxAllowedRestarts {
-				logrus.
-					WithField("restart", c.Int("restart")).
-					Warn("Not restarting, already restarted too many times")
-				os.Exit(1)
-
-				return nil
-			}
-
-			return b.restartApp(true)
-		})
-
-		if err := appMainLoop(b, c); err != nil {
-			return err
-		}
-
-		if err := b.doTeardown(); err != nil {
-			return err
-		}
-
-		if b.restart {
-			return b.restartApp(false)
-		}
-
-		return nil
-	}
-}
-
-func (b *Base) doTeardown() error {
-	for _, action := range b.teardown {
-		if err := action(); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (b *Base) setupLauncher(launcher string) {
-	b.command = launcher
-	// Bridge supports no-window option which we should use
-	// for autostart.
-	b.Autostart.Exec = []string{launcher, "--" + FlagNoWindow}
-}

internal/app/base/migration.go

@@ -1,131 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-package base
-
-import (
-	"os"
-	"path/filepath"
-
-	"github.com/ProtonMail/proton-bridge/v2/internal/constants"
-	"github.com/ProtonMail/proton-bridge/v2/internal/locations"
-	"github.com/sirupsen/logrus"
-)
-
-// migrateFiles migrates files from their old (pre-refactor) locations to their new locations.
-// We can remove this eventually.
-//
-// | entity    |               old location                |            new location                |
-// |-----------|-------------------------------------------|----------------------------------------|
-// | prefs     | ~/.cache/protonmail/<app>/c11/prefs.json  | ~/.config/protonmail/<app>/prefs.json  |
-// | c11 1.5.x | ~/.cache/protonmail/<app>/c11             | ~/.cache/protonmail/<app>/cache/c11    |
-// | c11 1.6.x | ~/.cache/protonmail/<app>/cache/c11       | ~/.config/protonmail/<app>/cache/c11   |
-// | updates   | ~/.cache/protonmail/<app>/updates         | ~/.config/protonmail/<app>/updates     |.
-func migrateFiles(configName string) error {
-	locationsProvider, err := locations.NewDefaultProvider(filepath.Join(constants.VendorName, configName))
-	if err != nil {
-		return err
-	}
-
-	locations := locations.New(locationsProvider, configName)
-	userCacheDir := locationsProvider.UserCache()
-
-	if err := migratePrefsFrom15x(locations, userCacheDir); err != nil {
-		return err
-	}
-	if err := migrateCacheFromBoth15xAnd16x(locations, userCacheDir); err != nil {
-		return err
-	}
-	if err := migrateUpdatesFrom16x(configName, locations); err != nil { //nolint:revive It is more clear to structure this way
-		return err
-	}
-	return nil
-}
-
-func migratePrefsFrom15x(locations *locations.Locations, userCacheDir string) error {
-	newSettingsDir, err := locations.ProvideSettingsPath()
-	if err != nil {
-		return err
-	}
-
-	return moveIfExists(
-		filepath.Join(userCacheDir, "c11", "prefs.json"),
-		filepath.Join(newSettingsDir, "prefs.json"),
-	)
-}
-
-func migrateCacheFromBoth15xAnd16x(locations *locations.Locations, userCacheDir string) error {
-	olderCacheDir := userCacheDir
-	newerCacheDir := locations.GetOldCachePath()
-	latestCacheDir, err := locations.ProvideCachePath()
-	if err != nil {
-		return err
-	}
-
-	// Migration for versions before 1.6.x.
-	if err := moveIfExists(
-		filepath.Join(olderCacheDir, "c11"),
-		filepath.Join(latestCacheDir, "c11"),
-	); err != nil {
-		return err
-	}
-
-	// Migration for versions 1.6.x.
-	return moveIfExists(
-		filepath.Join(newerCacheDir, "c11"),
-		filepath.Join(latestCacheDir, "c11"),
-	)
-}
-
-func migrateUpdatesFrom16x(configName string, locations *locations.Locations) error {
-	// In order to properly update Bridge 1.6.X and higher we need to
-	// change the launcher first. Since this is not part of automatic
-	// updates the migration must wait until manual update. Until that
-	// we need to keep old path.
-	if configName == "bridge" {
-		return nil
-	}
-
-	oldUpdatesPath := locations.GetOldUpdatesPath()
-	// Do not use ProvideUpdatesPath, that creates dir right away.
-	newUpdatesPath := locations.GetUpdatesPath()
-
-	return moveIfExists(oldUpdatesPath, newUpdatesPath)
-}
-
-func moveIfExists(source, destination string) error {
-	l := logrus.WithField("source", source).WithField("destination", destination)
-
-	if _, err := os.Stat(source); os.IsNotExist(err) {
-		l.Info("No need to migrate file, source doesn't exist")
-		return nil
-	}
-
-	if _, err := os.Stat(destination); !os.IsNotExist(err) {
-		// Once migrated, files should not stay in source anymore. Therefore
-		// if some files are still in source location but target already exist,
-		// it's suspicious. Could happen by installing new version, then the
-		// old one because of some reason, and then the new one again.
-		// Good to see as warning because it could be a reason why Bridge is
-		// behaving weirdly, like wrong configuration, or db re-sync and so on.
-		l.Warn("No need to migrate file, target already exists")
-		return nil
-	}
-
-	l.Info("Migrating files")
-	return os.Rename(source, destination)
-}

internal/app/base/migration_rebranding.go

@@ -1,197 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-package base
-
-import (
-	"errors"
-	"os"
-	"path/filepath"
-	"runtime"
-	"strings"
-
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/settings"
-	"github.com/ProtonMail/proton-bridge/v2/pkg/keychain"
-	"github.com/hashicorp/go-multierror"
-	"github.com/sirupsen/logrus"
-)
-
-const darwin = "darwin"
-
-func migrateRebranding(settingsObj *settings.Settings, keychainName string) (result error) {
-	if err := migrateStartupBeforeRebranding(); err != nil {
-		result = multierror.Append(result, err)
-	}
-
-	lastUsedVersion := settingsObj.Get(settings.LastVersionKey)
-
-	// Skipping migration: it is first bridge start or cache was cleared.
-	if lastUsedVersion == "" {
-		settingsObj.SetBool(settings.RebrandingMigrationKey, true)
-		return
-	}
-
-	// Skipping rest of migration: already done
-	if settingsObj.GetBool(settings.RebrandingMigrationKey) {
-		return
-	}
-
-	switch runtime.GOOS {
-	case "windows", "linux":
-		// GODT-1260 we would need admin rights to changes desktop files
-		// and start menu items.
-		settingsObj.SetBool(settings.RebrandingMigrationKey, true)
-	case darwin:
-		if shouldContinue, err := isMacBeforeRebranding(); !shouldContinue || err != nil {
-			if err != nil {
-				result = multierror.Append(result, err)
-			}
-			break
-		}
-
-		if err := migrateMacKeychainBeforeRebranding(settingsObj, keychainName); err != nil {
-			result = multierror.Append(result, err)
-		}
-
-		settingsObj.SetBool(settings.RebrandingMigrationKey, true)
-	}
-
-	return result
-}
-
-// migrateMacKeychainBeforeRebranding deals with write access restriction to
-// mac keychain passwords which are caused by application renaming. The old
-// passwords are copied under new name in order to have write access afer
-// renaming.
-func migrateMacKeychainBeforeRebranding(settingsObj *settings.Settings, keychainName string) error {
-	l := logrus.WithField("pkg", "app/base/migration")
-	l.Warn("Migrating mac keychain")
-
-	helperConstructor, ok := keychain.Helpers["macos-keychain"]
-	if !ok {
-		return errors.New("cannot find macos-keychain helper")
-	}
-
-	oldKC, err := helperConstructor("ProtonMailBridgeService")
-	if err != nil {
-		l.WithError(err).Error("Keychain constructor failed")
-		return err
-	}
-
-	idByURL, err := oldKC.List()
-	if err != nil {
-		l.WithError(err).Error("List old keychain failed")
-		return err
-	}
-
-	newKC, err := keychain.NewKeychain(settingsObj, keychainName)
-	if err != nil {
-		return err
-	}
-
-	for url, id := range idByURL {
-		li := l.WithField("id", id).WithField("url", url)
-		userID, secret, err := oldKC.Get(url)
-		if err != nil {
-			li.WithField("userID", userID).
-				WithField("err", err).
-				Error("Faild to get old item")
-			continue
-		}
-
-		if _, _, err := newKC.Get(userID); err == nil {
-			li.Warn("Skipping migration, item already exists.")
-			continue
-		}
-
-		if err := newKC.Put(userID, secret); err != nil {
-			li.WithError(err).Error("Failed to migrate user")
-		}
-
-		li.Info("Item migrated")
-	}
-
-	return nil
-}
-
-// migrateStartupBeforeRebranding removes old startup links. The creation of new links is
-// handled by bridge initialisation.
-func migrateStartupBeforeRebranding() error {
-	path, err := os.UserHomeDir()
-	if err != nil {
-		return err
-	}
-
-	switch runtime.GOOS {
-	case "windows":
-		path = filepath.Join(path, `AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ProtonMail Bridge.lnk`)
-	case "linux":
-		path = filepath.Join(path, `.config/autostart/ProtonMail Bridge.desktop`)
-	case darwin:
-		path = filepath.Join(path, `Library/LaunchAgents/ProtonMail Bridge.plist`)
-	default:
-		return errors.New("unknown GOOS")
-	}
-
-	if _, err := os.Stat(path); os.IsNotExist(err) {
-		return nil
-	}
-
-	logrus.WithField("pkg", "app/base/migration").Warn("Migrating autostartup links")
-	return os.Remove(path)
-}
-
-// startupNameForRebranding returns the name for autostart launcher based on
-// type of rebranded instance i.e. update or manual.
-//
-// This only affects darwin when udpate re-writes the old startup and then
-// manual installed it would not run proper exe. Therefore we return "old" name
-// for updates and "new" name for manual which would be properly migrated.
-//
-// For orther (linux and windows) the link is always pointing to launcher which
-// path didn't changed.
-func startupNameForRebranding(origin string) string {
-	if runtime.GOOS == darwin {
-		if path, err := os.Executable(); err == nil && strings.Contains(path, "ProtonMail Bridge") {
-			return "ProtonMail Bridge"
-		}
-	}
-
-	// No need to solve for other OS. See comment above.
-	return origin
-}
-
-// isBeforeRebranding decide if last used version was older than 2.2.0. If
-// cannot decide it returns false with error.
-func isMacBeforeRebranding() (bool, error) {
-	// previous version | update | do mac migration |
-	//                  | first  | false            |
-	// cleared-cache    | manual | false            |
-	// cleared-cache    | in-app | false            |
-	// old              | in-app | false            |
-	// old in-app       | in-app | false            |
-	// old              | manual | true             |
-	// old in-app       | manual | true             |
-	// manual           | in-app | false            |
-
-	// Skip if it was in-app update and not manual
-	if path, err := os.Executable(); err != nil || strings.Contains(path, "ProtonMail Bridge") {
-		return false, err
-	}
-
-	return true, nil
-}

internal/app/base/profiling.go

@@ -1,56 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-package base
-
-import (
-	"os"
-	"path/filepath"
-	"runtime"
-	"runtime/pprof"
-
-	"github.com/sirupsen/logrus"
-)
-
-// startCPUProfile starts CPU pprof.
-func startCPUProfile() {
-	f, err := os.Create("./cpu.pprof")
-	if err != nil {
-		logrus.Fatal("Could not create CPU profile: ", err)
-	}
-	if err := pprof.StartCPUProfile(f); err != nil {
-		logrus.Fatal("Could not start CPU profile: ", err)
-	}
-}
-
-// makeMemoryProfile generates memory pprof.
-func makeMemoryProfile() {
-	name := "./mem.pprof"
-	f, err := os.Create(name)
-	if err != nil {
-		logrus.Fatal("Could not create memory profile: ", err)
-	}
-	if abs, err := filepath.Abs(name); err == nil {
-		name = abs
-	}
-	logrus.Info("Writing memory profile to ", name)
-	runtime.GC() // get up-to-date statistics
-	if err := pprof.WriteHeapProfile(f); err != nil {
-		logrus.Fatal("Could not write memory profile: ", err)
-	}
-	_ = f.Close()
-}

internal/app/base/restart.go

@@ -1,112 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-package base
-
-import (
-	"os"
-	"strconv"
-
-	"github.com/sirupsen/logrus"
-	"golang.org/x/sys/execabs"
-)
-
-// maxAllowedRestarts controls after how many crashes the app will give up restarting.
-const maxAllowedRestarts = 10
-
-func (b *Base) restartApp(crash bool) error {
-	var args []string
-
-	if crash {
-		args = incrementRestartFlag(os.Args)[1:]
-		defer func() { os.Exit(1) }()
-	} else {
-		args = os.Args[1:]
-	}
-
-	if b.launcher != "" {
-		args = forceLauncherFlag(args, b.launcher)
-	}
-
-	args = append(args, "--wait", b.mainExecutable)
-
-	logrus.
-		WithField("command", b.command).
-		WithField("args", args).
-		Warn("Restarting")
-
-	return execabs.Command(b.command, args...).Start() //nolint:gosec
-}
-
-// incrementRestartFlag increments the value of the restart flag.
-// If no such flag is present, it is added with initial value 1.
-func incrementRestartFlag(args []string) []string {
-	res := append([]string{}, args...)
-
-	hasFlag := false
-
-	for k, v := range res {
-		if v != "--restart" {
-			continue
-		}
-
-		hasFlag = true
-
-		if k+1 >= len(res) {
-			continue
-		}
-
-		n, err := strconv.Atoi(res[k+1])
-		if err != nil {
-			res[k+1] = "1"
-		} else {
-			res[k+1] = strconv.Itoa(n + 1)
-		}
-	}
-
-	if !hasFlag {
-		res = append(res, "--restart", "1")
-	}
-
-	return res
-}
-
-// forceLauncherFlag  replace or add the launcher args with the one set in the app.
-func forceLauncherFlag(args []string, launcher string) []string {
-	res := append([]string{}, args...)
-
-	hasFlag := false
-
-	for k, v := range res {
-		if v != "--launcher" {
-			continue
-		}
-
-		if k+1 >= len(res) {
-			continue
-		}
-
-		hasFlag = true
-		res[k+1] = launcher
-	}
-
-	if !hasFlag {
-		res = append(res, "--launcher", launcher)
-	}
-
-	return res
-}

internal/app/base/restart_test.go

@@ -1,63 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-package base
-
-import (
-	"strings"
-	"testing"
-
-	"github.com/Masterminds/semver/v3"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func TestIncrementRestartFlag(t *testing.T) {
-	tests := []struct {
-		in  []string
-		out []string
-	}{
-		{[]string{"./bridge", "--restart", "1"}, []string{"./bridge", "--restart", "2"}},
-		{[]string{"./bridge", "--restart", "2"}, []string{"./bridge", "--restart", "3"}},
-		{[]string{"./bridge", "--other", "--restart", "2"}, []string{"./bridge", "--other", "--restart", "3"}},
-		{[]string{"./bridge", "--restart", "2", "--other"}, []string{"./bridge", "--restart", "3", "--other"}},
-		{[]string{"./bridge", "--restart", "2", "--other", "2"}, []string{"./bridge", "--restart", "3", "--other", "2"}},
-		{[]string{"./bridge"}, []string{"./bridge", "--restart", "1"}},
-		{[]string{"./bridge", "--something"}, []string{"./bridge", "--something", "--restart", "1"}},
-		{[]string{"./bridge", "--something", "--else"}, []string{"./bridge", "--something", "--else", "--restart", "1"}},
-		{[]string{"./bridge", "--restart", "bad"}, []string{"./bridge", "--restart", "1"}},
-		{[]string{"./bridge", "--restart", "bad", "--other"}, []string{"./bridge", "--restart", "1", "--other"}},
-	}
-
-	for _, tt := range tests {
-		t.Run(strings.Join(tt.in, " "), func(t *testing.T) {
-			assert.Equal(t, tt.out, incrementRestartFlag(tt.in))
-		})
-	}
-}
-
-func TestVersionLessThan(t *testing.T) {
-	r := require.New(t)
-
-	old := semver.MustParse("1.1.0")
-	current := semver.MustParse("1.1.1")
-	newer := semver.MustParse("1.1.2")
-
-	r.True(old.LessThan(current))
-	r.False(current.LessThan(current))
-	r.False(newer.LessThan(current))
-}

internal/app/base/singleinstance_unix.go

@@ -1,101 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-//go:build !windows
-// +build !windows
-
-package base
-
-import (
-	"errors"
-	"os"
-	"path/filepath"
-	"strconv"
-	"strings"
-	"time"
-
-	"github.com/Masterminds/semver/v3"
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/settings"
-	"github.com/ProtonMail/proton-bridge/v2/internal/constants"
-	"github.com/allan-simon/go-singleinstance"
-	"golang.org/x/sys/unix"
-)
-
-// checkSingleInstance returns error if a bridge instance is already running
-// This instance should be stop and window of running window should be brought
-// to focus.
-//
-// For macOS and Linux when already running version is older than this instance
-// it will kill old and continue with this new bridge (i.e. no error returned).
-func checkSingleInstance(lockFilePath string, settingsObj *settings.Settings) (*os.File, error) {
-	if lock, err := singleinstance.CreateLockFile(lockFilePath); err == nil {
-		// Bridge is not runnig, continue normally
-		return lock, nil
-	}
-
-	if err := runningVersionIsOlder(settingsObj); err != nil {
-		return nil, err
-	}
-
-	pid, err := getPID(lockFilePath)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := unix.Kill(pid, unix.SIGTERM); err != nil {
-		return nil, err
-	}
-
-	// Need to wait some time to release file lock
-	time.Sleep(time.Second)
-
-	return singleinstance.CreateLockFile(lockFilePath)
-}
-
-func getPID(lockFilePath string) (int, error) {
-	file, err := os.Open(filepath.Clean(lockFilePath))
-	if err != nil {
-		return 0, err
-	}
-	defer func() { _ = file.Close() }()
-
-	rawPID := make([]byte, 10) // PID is probably up to 7 digits long, 10 should be enough
-	n, err := file.Read(rawPID)
-	if err != nil {
-		return 0, err
-	}
-
-	return strconv.Atoi(strings.TrimSpace(string(rawPID[:n])))
-}
-
-func runningVersionIsOlder(settingsObj *settings.Settings) error {
-	currentVer, err := semver.StrictNewVersion(constants.Version)
-	if err != nil {
-		return err
-	}
-
-	runningVer, err := semver.StrictNewVersion(settingsObj.Get(settings.LastVersionKey))
-	if err != nil {
-		return err
-	}
-
-	if !runningVer.LessThan(currentVer) {
-		return errors.New("running version is not older")
-	}
-
-	return nil
-}

internal/app/bridge.go

@@ -0,0 +1,163 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package app
+
+import (
+	"fmt"
+	"net/http"
+	"runtime"
+
+	"github.com/Masterminds/semver/v3"
+	"github.com/ProtonMail/go-autostart"
+	"github.com/ProtonMail/gopenpgp/v2/crypto"
+	"github.com/ProtonMail/proton-bridge/v3/internal/bridge"
+	"github.com/ProtonMail/proton-bridge/v3/internal/constants"
+	"github.com/ProtonMail/proton-bridge/v3/internal/crash"
+	"github.com/ProtonMail/proton-bridge/v3/internal/dialer"
+	"github.com/ProtonMail/proton-bridge/v3/internal/events"
+	"github.com/ProtonMail/proton-bridge/v3/internal/locations"
+	"github.com/ProtonMail/proton-bridge/v3/internal/sentry"
+	"github.com/ProtonMail/proton-bridge/v3/internal/updater"
+	"github.com/ProtonMail/proton-bridge/v3/internal/useragent"
+	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
+	"github.com/ProtonMail/proton-bridge/v3/internal/versioner"
+	"github.com/sirupsen/logrus"
+	"github.com/urfave/cli/v2"
+)
+
+const vaultSecretName = "bridge-vault-key"
+
+// deleteOldGoIMAPFiles Set with `-ldflags -X app.deleteOldGoIMAPFiles=true` to enable cleanup of old imap cache data.
+var deleteOldGoIMAPFiles bool //nolint:gochecknoglobals
+
+// withBridge creates creates and tears down the bridge.
+func withBridge( //nolint:funlen
+	c *cli.Context,
+	exe string,
+	locations *locations.Locations,
+	version *semver.Version,
+	identifier *useragent.UserAgent,
+	crashHandler *crash.Handler,
+	reporter *sentry.Reporter,
+	vault *vault.Vault,
+	cookieJar http.CookieJar,
+	fn func(*bridge.Bridge, <-chan events.Event) error,
+) error {
+	logrus.Debug("Creating bridge")
+	defer logrus.Debug("Bridge stopped")
+
+	// Delete old go-imap cache files
+	if deleteOldGoIMAPFiles {
+		logrus.Debug("Deleting old go-imap cache files")
+
+		if err := locations.CleanGoIMAPCache(); err != nil {
+			logrus.WithError(err).Error("Failed to remove old go-imap cache")
+		}
+	}
+
+	// Create the underlying dialer used by the bridge.
+	// It only connects to trusted servers and reports any untrusted servers it finds.
+	pinningDialer := dialer.NewPinningTLSDialer(
+		dialer.NewBasicTLSDialer(constants.APIHost),
+		dialer.NewTLSReporter(constants.APIHost, constants.AppVersion(version.Original()), identifier, dialer.TrustedAPIPins),
+		dialer.NewTLSPinChecker(dialer.TrustedAPIPins),
+	)
+
+	// Create a proxy dialer which switches to a proxy if the request fails.
+	proxyDialer := dialer.NewProxyTLSDialer(pinningDialer, constants.APIHost)
+
+	// Create the autostarter.
+	autostarter := newAutostarter(exe)
+
+	// Create the update installer.
+	updater, err := newUpdater(locations)
+	if err != nil {
+		return fmt.Errorf("could not create updater: %w", err)
+	}
+
+	// Create a new bridge.
+	bridge, eventCh, err := bridge.New(
+		// The app stuff.
+		locations,
+		vault,
+		autostarter,
+		updater,
+		version,
+
+		// The API stuff.
+		constants.APIHost,
+		cookieJar,
+		identifier,
+		pinningDialer,
+		dialer.CreateTransportWithDialer(proxyDialer),
+		proxyDialer,
+
+		// Crash and report stuff
+		crashHandler,
+		reporter,
+
+		// The logging stuff.
+		c.String(flagLogIMAP) == "client" || c.String(flagLogIMAP) == "all",
+		c.String(flagLogIMAP) == "server" || c.String(flagLogIMAP) == "all",
+		c.Bool(flagLogSMTP),
+	)
+	if err != nil {
+		return fmt.Errorf("could not create bridge: %w", err)
+	}
+
+	// Ensure we close bridge when we exit.
+	defer bridge.Close(c.Context)
+
+	return fn(bridge, eventCh)
+}
+
+func newAutostarter(exe string) *autostart.App {
+	logrus.Debug("Creating autostarter")
+
+	return &autostart.App{
+		Name:        constants.FullAppName,
+		DisplayName: constants.FullAppName,
+		Exec:        []string{exe, "--" + flagNoWindow},
+	}
+}
+
+func newUpdater(locations *locations.Locations) (*updater.Updater, error) {
+	updatesDir, err := locations.ProvideUpdatesPath()
+	if err != nil {
+		return nil, fmt.Errorf("could not provide updates path: %w", err)
+	}
+
+	logrus.WithField("updates", updatesDir).Debug("Creating updater")
+
+	key, err := crypto.NewKeyFromArmored(updater.DefaultPublicKey)
+	if err != nil {
+		return nil, fmt.Errorf("could not create key from armored: %w", err)
+	}
+
+	verifier, err := crypto.NewKeyRing(key)
+	if err != nil {
+		return nil, fmt.Errorf("could not create key ring: %w", err)
+	}
+
+	return updater.NewUpdater(
+		updater.NewInstaller(versioner.New(updatesDir)),
+		verifier,
+		constants.UpdateName,
+		runtime.GOOS,
+	), nil
+}

internal/app/bridge/bridge.go

@@ -1,273 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-// Package bridge implements the bridge CLI application.
-package bridge
-
-import (
-	"time"
-
-	"github.com/ProtonMail/proton-bridge/v2/internal/api"
-	"github.com/ProtonMail/proton-bridge/v2/internal/app/base"
-	pkgBridge "github.com/ProtonMail/proton-bridge/v2/internal/bridge"
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/settings"
-	"github.com/ProtonMail/proton-bridge/v2/internal/constants"
-	"github.com/ProtonMail/proton-bridge/v2/internal/frontend"
-	"github.com/ProtonMail/proton-bridge/v2/internal/frontend/types"
-	"github.com/ProtonMail/proton-bridge/v2/internal/imap"
-	"github.com/ProtonMail/proton-bridge/v2/internal/smtp"
-	"github.com/ProtonMail/proton-bridge/v2/internal/store"
-	"github.com/ProtonMail/proton-bridge/v2/internal/store/cache"
-	"github.com/ProtonMail/proton-bridge/v2/internal/updater"
-	"github.com/ProtonMail/proton-bridge/v2/pkg/message"
-	"github.com/pkg/errors"
-	"github.com/sirupsen/logrus"
-	"github.com/urfave/cli/v2"
-)
-
-const (
-	flagLogIMAP        = "log-imap"
-	flagLogSMTP        = "log-smtp"
-	flagNonInteractive = "noninteractive"
-
-	// Memory cache was estimated by empirical usage in the past, and it was set to 100MB.
-	// NOTE: This value must not be less than maximal size of one email (~30MB).
-	inMemoryCacheLimit = 100 * (1 << 20)
-)
-
-func New(base *base.Base) *cli.App {
-	app := base.NewApp(main)
-
-	app.Flags = append(app.Flags, []cli.Flag{
-		&cli.StringFlag{
-			Name:  flagLogIMAP,
-			Usage: "Enable logging of IMAP communications (all|client|server) (may contain decrypted data!)",
-		},
-		&cli.BoolFlag{
-			Name:  flagLogSMTP,
-			Usage: "Enable logging of SMTP communications (may contain decrypted data!)",
-		},
-		&cli.BoolFlag{
-			Name:  flagNonInteractive,
-			Usage: "Start Bridge entirely non-interactively",
-		},
-	}...)
-
-	return app
-}
-
-func main(b *base.Base, c *cli.Context) error { //nolint:funlen
-	frontendType := getFrontendTypeFromCLIParams(c)
-	f := frontend.New(
-		frontendType,
-		!c.Bool(base.FlagNoWindow),
-		b.CrashHandler,
-		b.Listener,
-		b.Updater,
-		b,
-		b.Locations,
-	)
-
-	cache, cacheErr := loadMessageCache(b)
-	if cacheErr != nil {
-		logrus.WithError(cacheErr).Error("Could not load local cache.")
-	}
-
-	builder := message.NewBuilder(
-		b.Settings.GetInt(settings.FetchWorkers),
-		b.Settings.GetInt(settings.AttachmentWorkers),
-	)
-
-	bridge := pkgBridge.New(
-		b.Locations,
-		b.Cache,
-		b.Settings,
-		b.SentryReporter,
-		b.CrashHandler,
-		b.Listener,
-		b.TLS,
-		b.UserAgent,
-		cache,
-		builder,
-		b.CM,
-		b.Creds,
-		b.Updater,
-		b.Versioner,
-		b.Autostart,
-	)
-	imapBackend := imap.NewIMAPBackend(b.CrashHandler, b.Listener, b.Cache, b.Settings, bridge)
-	smtpBackend := smtp.NewSMTPBackend(b.CrashHandler, b.Listener, b.Settings, bridge)
-
-	tlsConfig, err := bridge.GetTLSConfig()
-	if err != nil {
-		return err
-	}
-
-	if cacheErr != nil {
-		bridge.AddError(pkgBridge.ErrLocalCacheUnavailable)
-	}
-
-	go func() {
-		defer b.CrashHandler.HandlePanic()
-		api.NewAPIServer(b.Settings, b.Listener).ListenAndServe()
-	}()
-
-	go func() {
-		defer b.CrashHandler.HandlePanic()
-		imapPort := b.Settings.GetInt(settings.IMAPPortKey)
-		imap.NewIMAPServer(
-			b.CrashHandler,
-			c.String(flagLogIMAP) == "client" || c.String(flagLogIMAP) == "all",
-			c.String(flagLogIMAP) == "server" || c.String(flagLogIMAP) == "all",
-			imapPort, tlsConfig, imapBackend, b.UserAgent, b.Listener).ListenAndServe()
-	}()
-
-	go func() {
-		defer b.CrashHandler.HandlePanic()
-		smtpPort := b.Settings.GetInt(settings.SMTPPortKey)
-		useSSL := b.Settings.GetBool(settings.SMTPSSLKey)
-		smtp.NewSMTPServer(
-			b.CrashHandler,
-			c.Bool(flagLogSMTP),
-			smtpPort, useSSL, tlsConfig, smtpBackend, b.Listener).ListenAndServe()
-	}()
-
-	// We want to remove old versions if the app exits successfully.
-	b.AddTeardownAction(b.Versioner.RemoveOldVersions)
-
-	// We want cookies to be saved to disk so they are loaded the next time.
-	b.AddTeardownAction(b.CookieJar.PersistCookies)
-
-	if frontendType == frontend.NonInteractive {
-		return <-(make(chan error))
-	}
-
-	// Watch for updates routine
-	go func() {
-		ticker := time.NewTicker(constants.UpdateCheckInterval)
-
-		for {
-			checkAndHandleUpdate(b.Updater, f, b.Settings.GetBool(settings.AutoUpdateKey))
-			<-ticker.C
-		}
-	}()
-
-	return f.Loop(bridge)
-}
-
-func getFrontendTypeFromCLIParams(c *cli.Context) frontend.Type {
-	switch {
-	case c.Bool(base.FlagCLI):
-		return frontend.CLI
-	case c.Bool(flagNonInteractive):
-		return frontend.NonInteractive
-	default:
-		return frontend.GRPC
-	}
-}
-
-func checkAndHandleUpdate(u types.Updater, f frontend.Frontend, autoUpdate bool) {
-	log := logrus.WithField("pkg", "app/bridge")
-	version, err := u.Check()
-	if err != nil {
-		log.WithError(err).Error("An error occurred while checking for updates")
-		return
-	}
-
-	f.WaitUntilFrontendIsReady()
-
-	// Update links in UI
-	f.SetVersion(version)
-
-	if !u.IsUpdateApplicable(version) {
-		log.Info("No need to update")
-		return
-	}
-
-	log.WithField("version", version.Version).Info("An update is available")
-
-	if !autoUpdate {
-		f.NotifyManualUpdate(version, u.CanInstall(version))
-		return
-	}
-
-	if !u.CanInstall(version) {
-		log.Info("A manual update is required")
-		f.NotifySilentUpdateError(updater.ErrManualUpdateRequired)
-		return
-	}
-
-	if err := u.InstallUpdate(version); err != nil {
-		if errors.Cause(err) == updater.ErrDownloadVerify {
-			log.WithError(err).Warning("Skipping update installation due to temporary error")
-		} else {
-			log.WithError(err).Error("The update couldn't be installed")
-			f.NotifySilentUpdateError(err)
-		}
-
-		return
-	}
-
-	f.NotifySilentUpdateInstalled()
-}
-
-// loadMessageCache loads local cache in case it is enabled in settings and available.
-// In any other case it is returning in-memory cache. Could also return an error in case
-// local cache is enabled but unavailable (in-memory cache will be returned nevertheless).
-func loadMessageCache(b *base.Base) (cache.Cache, error) {
-	if !b.Settings.GetBool(settings.CacheEnabledKey) {
-		return cache.NewInMemoryCache(inMemoryCacheLimit), nil
-	}
-
-	var compressor cache.Compressor
-
-	// NOTE(GODT-1158): Changing compression is not an option currently
-	// available for user but, if user changes compression setting we have
-	// to nuke the cache.
-	if b.Settings.GetBool(settings.CacheCompressionKey) {
-		compressor = &cache.GZipCompressor{}
-	} else {
-		compressor = &cache.NoopCompressor{}
-	}
-
-	var path string
-
-	if customPath := b.Settings.Get(settings.CacheLocationKey); customPath != "" {
-		path = customPath
-	} else {
-		path = b.Cache.GetDefaultMessageCacheDir()
-		// Store path so it will always persist if default location
-		// will be changed in new version.
-		b.Settings.Set(settings.CacheLocationKey, path)
-	}
-
-	// To prevent memory peaks we set maximal write concurrency for store
-	// build jobs.
-	store.SetBuildAndCacheJobLimit(b.Settings.GetInt(settings.CacheConcurrencyWrite))
-
-	messageCache, err := cache.NewOnDiskCache(path, compressor, cache.Options{
-		MinFreeAbs:      uint64(b.Settings.GetInt(settings.CacheMinFreeAbsKey)),
-		MinFreeRat:      b.Settings.GetFloat64(settings.CacheMinFreeRatKey),
-		ConcurrentRead:  b.Settings.GetInt(settings.CacheConcurrencyRead),
-		ConcurrentWrite: b.Settings.GetInt(settings.CacheConcurrencyWrite),
-	})
-	if err != nil {
-		return cache.NewInMemoryCache(inMemoryCacheLimit), err
-	}
-
-	return messageCache, nil
-}

internal/app/frontend.go

@@ -0,0 +1,69 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package app
+
+import (
+	"fmt"
+
+	"github.com/ProtonMail/proton-bridge/v3/internal/bridge"
+	"github.com/ProtonMail/proton-bridge/v3/internal/crash"
+	"github.com/ProtonMail/proton-bridge/v3/internal/events"
+	bridgeCLI "github.com/ProtonMail/proton-bridge/v3/internal/frontend/cli"
+	"github.com/ProtonMail/proton-bridge/v3/internal/frontend/grpc"
+	"github.com/ProtonMail/proton-bridge/v3/internal/locations"
+	"github.com/ProtonMail/proton-bridge/v3/pkg/restarter"
+	"github.com/sirupsen/logrus"
+	"github.com/urfave/cli/v2"
+)
+
+func runFrontend(
+	c *cli.Context,
+	crashHandler *crash.Handler,
+	restarter *restarter.Restarter,
+	locations *locations.Locations,
+	bridge *bridge.Bridge,
+	eventCh <-chan events.Event,
+	quitCh <-chan struct{},
+	parentPID int,
+) error {
+	logrus.Debug("Running frontend")
+	defer logrus.Debug("Frontend stopped")
+
+	switch {
+	case c.Bool(flagCLI):
+		return bridgeCLI.New(bridge, restarter, eventCh).Loop()
+
+	case c.Bool(flagNonInteractive):
+		select {}
+
+	case c.Bool(flagGRPC):
+		service, err := grpc.NewService(crashHandler, restarter, locations, bridge, eventCh, quitCh, !c.Bool(flagNoWindow), parentPID)
+		if err != nil {
+			return fmt.Errorf("could not create service: %w", err)
+		}
+
+		return service.Loop()
+
+	default:
+		if err := cli.ShowAppHelp(c); err != nil {
+			logrus.WithError(err).Error("Failed to show app help")
+		}
+
+		return fmt.Errorf("no frontend specified, use --cli, --grpc or --noninteractive")
+	}
+}

internal/app/migration.go

@@ -0,0 +1,347 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package app
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/fs"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/Masterminds/semver/v3"
+	"github.com/ProtonMail/proton-bridge/v3/internal/legacy/credentials"
+	"github.com/ProtonMail/proton-bridge/v3/internal/locations"
+	"github.com/ProtonMail/proton-bridge/v3/internal/updater"
+	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
+	"github.com/ProtonMail/proton-bridge/v3/pkg/algo"
+	"github.com/ProtonMail/proton-bridge/v3/pkg/keychain"
+	"github.com/allan-simon/go-singleinstance"
+	"github.com/hashicorp/go-multierror"
+	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
+)
+
+// nolint:gosec
+func migrateKeychainHelper(locations *locations.Locations) error {
+	logrus.Info("Migrating keychain helper")
+
+	settings, err := locations.ProvideSettingsPath()
+	if err != nil {
+		return fmt.Errorf("failed to get settings path: %w", err)
+	}
+
+	if keychainName, _ := vault.GetHelper(settings); keychainName != "" {
+		// If uncorupted keychain file is already there do not migrate again.
+		return nil
+	}
+
+	configDir, err := os.UserConfigDir()
+	if err != nil {
+		return fmt.Errorf("failed to get user config dir: %w", err)
+	}
+
+	b, err := os.ReadFile(filepath.Join(configDir, "protonmail", "bridge", "prefs.json"))
+	if errors.Is(err, fs.ErrNotExist) {
+		return nil
+	} else if err != nil {
+		return fmt.Errorf("failed to read old prefs file: %w", err)
+	}
+
+	var prefs struct {
+		Helper string `json:"preferred_keychain"`
+	}
+
+	if err := json.Unmarshal(b, &prefs); err != nil {
+		return fmt.Errorf("failed to unmarshal old prefs file: %w", err)
+	}
+
+	return vault.SetHelper(settings, prefs.Helper)
+}
+
+// nolint:gosec
+func migrateOldSettings(v *vault.Vault) error {
+	logrus.Info("Migrating settings")
+
+	configDir, err := os.UserConfigDir()
+	if err != nil {
+		return fmt.Errorf("failed to get user config dir: %w", err)
+	}
+
+	b, err := os.ReadFile(filepath.Join(configDir, "protonmail", "bridge", "prefs.json"))
+	if errors.Is(err, fs.ErrNotExist) {
+		return nil
+	} else if err != nil {
+		return fmt.Errorf("failed to read old prefs file: %w", err)
+	}
+
+	return migratePrefsToVault(v, b)
+}
+
+func migrateOldAccounts(locations *locations.Locations, v *vault.Vault) error {
+	logrus.Info("Migrating accounts")
+
+	settings, err := locations.ProvideSettingsPath()
+	if err != nil {
+		return fmt.Errorf("failed to get settings path: %w", err)
+	}
+
+	helper, err := vault.GetHelper(settings)
+	if err != nil {
+		return fmt.Errorf("failed to get helper: %w", err)
+	}
+
+	keychain, err := keychain.NewKeychain(helper, "bridge")
+	if err != nil {
+		return fmt.Errorf("failed to create keychain: %w", err)
+	}
+
+	store := credentials.NewStore(keychain)
+
+	users, err := store.List()
+	if err != nil {
+		return fmt.Errorf("failed to create credentials store: %w", err)
+	}
+
+	var migrationErrors error
+
+	for _, userID := range users {
+		logrus.WithField("userID", userID).Info("Migrating account")
+		if err := migrateOldAccount(userID, store, v); err != nil {
+			migrationErrors = multierror.Append(migrationErrors, err)
+		}
+	}
+
+	return migrationErrors
+}
+
+func migrateOldAccount(userID string, store *credentials.Store, v *vault.Vault) error {
+	creds, err := store.Get(userID)
+	if err != nil {
+		return fmt.Errorf("failed to get user %q: %w", userID, err)
+	}
+
+	authUID, authRef, err := creds.SplitAPIToken()
+	if err != nil {
+		return fmt.Errorf("failed to split api token for user %q: %w", userID, err)
+	}
+
+	user, err := v.AddUser(creds.UserID, creds.EmailList()[0], authUID, authRef, creds.MailboxPassword)
+	if err != nil {
+		return fmt.Errorf("failed to add user %q: %w", userID, err)
+	}
+
+	defer func() {
+		if err := user.Close(); err != nil {
+			logrus.WithField("userID", userID).WithError(err).Error("Failed to close vault user after migration")
+		}
+	}()
+
+	dec, err := algo.B64RawDecode([]byte(creds.BridgePassword))
+	if err != nil {
+		return fmt.Errorf("failed to decode bridge password for user %q: %w", userID, err)
+	}
+
+	if err := user.SetBridgePass(dec); err != nil {
+		return fmt.Errorf("failed to set bridge password to user %q: %w", userID, err)
+	}
+
+	if !creds.IsCombinedAddressMode {
+		if err := user.SetAddressMode(vault.SplitMode); err != nil {
+			return fmt.Errorf("failed to set split address mode to user %q: %w", userID, err)
+		}
+	}
+
+	return nil
+}
+
+// nolint:funlen
+func migratePrefsToVault(vault *vault.Vault, b []byte) error {
+	var prefs struct {
+		IMAPPort int  `json:"user_port_imap,,string"`
+		SMTPPort int  `json:"user_port_smtp,,string"`
+		SMTPSSL  bool `json:"user_ssl_smtp,,string"`
+
+		AutoUpdate    bool            `json:"autoupdate,,string"`
+		UpdateChannel updater.Channel `json:"update_channel"`
+		UpdateRollout float64         `json:"rollout,,string"`
+
+		FirstStart    bool            `json:"first_time_start,,string"`
+		FirstStartGUI bool            `json:"first_time_start_gui,,string"`
+		ColorScheme   string          `json:"color_scheme"`
+		LastVersion   *semver.Version `json:"last_used_version"`
+		Autostart     bool            `json:"autostart,,string"`
+
+		AllowProxy        bool `json:"allow_proxy,,string"`
+		FetchWorkers      int  `json:"fetch_workers,,string"`
+		AttachmentWorkers int  `json:"attachment_workers,,string"`
+		ShowAllMail       bool `json:"is_all_mail_visible,,string"`
+
+		Cookies string `json:"cookies"`
+	}
+
+	if err := json.Unmarshal(b, &prefs); err != nil {
+		return fmt.Errorf("failed to unmarshal old prefs file: %w", err)
+	}
+
+	var errs error
+
+	if err := vault.SetIMAPPort(prefs.IMAPPort); err != nil {
+		errs = multierror.Append(errs, fmt.Errorf("failed to migrate IMAP port: %w", err))
+	}
+
+	if err := vault.SetSMTPPort(prefs.SMTPPort); err != nil {
+		errs = multierror.Append(errs, fmt.Errorf("failed to migrate SMTP port: %w", err))
+	}
+
+	if err := vault.SetSMTPSSL(prefs.SMTPSSL); err != nil {
+		errs = multierror.Append(errs, fmt.Errorf("failed to migrate SMTP SSL: %w", err))
+	}
+
+	if err := vault.SetAutoUpdate(prefs.AutoUpdate); err != nil {
+		errs = multierror.Append(errs, fmt.Errorf("failed to migrate auto update: %w", err))
+	}
+
+	if err := vault.SetUpdateChannel(prefs.UpdateChannel); err != nil {
+		errs = multierror.Append(errs, fmt.Errorf("failed to migrate update channel: %w", err))
+	}
+
+	if err := vault.SetUpdateRollout(prefs.UpdateRollout); err != nil {
+		errs = multierror.Append(errs, fmt.Errorf("failed to migrate rollout: %w", err))
+	}
+
+	if err := vault.SetFirstStart(prefs.FirstStart); err != nil {
+		errs = multierror.Append(errs, fmt.Errorf("failed to migrate first start: %w", err))
+	}
+
+	if err := vault.SetFirstStartGUI(prefs.FirstStartGUI); err != nil {
+		errs = multierror.Append(errs, fmt.Errorf("failed to migrate first start GUI: %w", err))
+	}
+
+	if err := vault.SetColorScheme(prefs.ColorScheme); err != nil {
+		errs = multierror.Append(errs, fmt.Errorf("failed to migrate color scheme: %w", err))
+	}
+
+	if err := vault.SetLastVersion(prefs.LastVersion); err != nil {
+		errs = multierror.Append(errs, fmt.Errorf("failed to migrate last version: %w", err))
+	}
+
+	if err := vault.SetAutostart(prefs.Autostart); err != nil {
+		errs = multierror.Append(errs, fmt.Errorf("failed to migrate autostart: %w", err))
+	}
+
+	if err := vault.SetProxyAllowed(prefs.AllowProxy); err != nil {
+		errs = multierror.Append(errs, fmt.Errorf("failed to migrate allow proxy: %w", err))
+	}
+
+	if err := vault.SetShowAllMail(prefs.ShowAllMail); err != nil {
+		errs = multierror.Append(errs, fmt.Errorf("failed to migrate show all mail: %w", err))
+	}
+
+	if err := vault.SetSyncWorkers(prefs.FetchWorkers); err != nil {
+		errs = multierror.Append(errs, fmt.Errorf("failed to migrate sync workers: %w", err))
+	}
+
+	if err := vault.SetSyncAttPool(prefs.AttachmentWorkers); err != nil {
+		errs = multierror.Append(errs, fmt.Errorf("failed to migrate sync attachment pool: %w", err))
+	}
+
+	if err := vault.SetCookies([]byte(prefs.Cookies)); err != nil {
+		errs = multierror.Append(errs, fmt.Errorf("failed to migrate cookies: %w", err))
+	}
+
+	return errs
+}
+
+func migrateOldVersions() (allErrors error) {
+	cacheDir, cacheError := os.UserCacheDir()
+	if cacheError != nil {
+		allErrors = multierror.Append(allErrors, errors.Wrap(cacheError, "cannot get os cache"))
+		return // not need to continue for now (with more migrations might be still ok to continue)
+	}
+
+	if err := killV2AppAndRemoveV2LockFiles(filepath.Join(cacheDir, "protonmail", "bridge", "bridge.lock")); err != nil {
+		allErrors = multierror.Append(allErrors, errors.Wrap(err, "cannot migrate lockfiles"))
+	}
+
+	return
+}
+
+func killV2AppAndRemoveV2LockFiles(lockFilePathV2 string) error {
+	l := logrus.WithField("path", lockFilePathV2)
+
+	if _, err := os.Stat(lockFilePathV2); os.IsNotExist(err) {
+		l.Debug("no v2 lockfile")
+		return nil
+	}
+
+	lock, err := singleinstance.CreateLockFile(lockFilePathV2)
+
+	if err == nil {
+		l.Debug("no other v2 instance is running")
+
+		if errClose := lock.Close(); errClose != nil {
+			l.WithError(errClose).Error("Cannot close lock file")
+		}
+
+		return os.Remove(lockFilePathV2)
+	}
+
+	// The other instance is an older version, so we should kill it.
+	pid, err := getPID(lockFilePathV2)
+	if err != nil {
+		return errors.Wrap(err, "cannot get v2 pid")
+	}
+
+	if err := killPID(pid); err != nil {
+		return errors.Wrapf(err, "cannot kill v2 app (PID %d)", pid)
+	}
+
+	// Need to wait some time to release file lock
+	time.Sleep(time.Second)
+
+	return nil
+}
+
+func getPID(lockFilePath string) (int, error) {
+	file, err := os.Open(filepath.Clean(lockFilePath))
+	if err != nil {
+		return 0, err
+	}
+	defer func() { _ = file.Close() }()
+
+	rawPID := make([]byte, 10) // PID is probably up to 7 digits long, 10 should be enough
+	n, err := file.Read(rawPID)
+	if err != nil {
+		return 0, err
+	}
+
+	return strconv.Atoi(strings.TrimSpace(string(rawPID[:n])))
+}
+
+func killPID(pid int) error {
+	p, err := os.FindProcess(pid)
+	if err != nil {
+		return err
+	}
+
+	return p.Kill()
+}

internal/app/migration_test.go

@@ -0,0 +1,199 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package app
+
+import (
+	"net/http/cookiejar"
+	"net/url"
+	"os"
+	"path/filepath"
+	"runtime"
+	"testing"
+
+	"github.com/ProtonMail/gopenpgp/v2/crypto"
+	"github.com/ProtonMail/proton-bridge/v3/internal/bridge"
+	"github.com/ProtonMail/proton-bridge/v3/internal/cookies"
+	"github.com/ProtonMail/proton-bridge/v3/internal/legacy/credentials"
+	"github.com/ProtonMail/proton-bridge/v3/internal/locations"
+	"github.com/ProtonMail/proton-bridge/v3/internal/updater"
+	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
+	"github.com/ProtonMail/proton-bridge/v3/pkg/algo"
+	"github.com/ProtonMail/proton-bridge/v3/pkg/keychain"
+	dockerCredentials "github.com/docker/docker-credential-helpers/credentials"
+	"github.com/stretchr/testify/require"
+)
+
+func TestMigratePrefsToVault(t *testing.T) {
+	// Create a new vault.
+	vault, corrupt, err := vault.New(t.TempDir(), t.TempDir(), []byte("my secret key"))
+	require.NoError(t, err)
+	require.False(t, corrupt)
+
+	// load the old prefs file.
+	b, err := os.ReadFile(filepath.Join("testdata", "prefs.json"))
+	require.NoError(t, err)
+
+	// Migrate the old prefs file to the new vault.
+	require.NoError(t, migratePrefsToVault(vault, b))
+
+	// Check that the IMAP and SMTP prefs are migrated.
+	require.Equal(t, 2143, vault.GetIMAPPort())
+	require.Equal(t, 2025, vault.GetSMTPPort())
+	require.True(t, vault.GetSMTPSSL())
+
+	// Check that the update channel is migrated.
+	require.True(t, vault.GetAutoUpdate())
+	require.Equal(t, updater.EarlyChannel, vault.GetUpdateChannel())
+	require.Equal(t, 0.4849529004202015, vault.GetUpdateRollout())
+
+	// Check that the app settings have been migrated.
+	require.False(t, vault.GetFirstStart())
+	require.True(t, vault.GetFirstStartGUI())
+	require.Equal(t, "blablabla", vault.GetColorScheme())
+	require.Equal(t, "2.3.0+git", vault.GetLastVersion().String())
+	require.True(t, vault.GetAutostart())
+
+	// Check that the other app settings have been migrated.
+	require.Equal(t, 16, vault.SyncWorkers())
+	require.Equal(t, 16, vault.SyncAttPool())
+	require.False(t, vault.GetProxyAllowed())
+	require.False(t, vault.GetShowAllMail())
+
+	// Check that the cookies have been migrated.
+	jar, err := cookiejar.New(nil)
+	require.NoError(t, err)
+
+	cookies, err := cookies.NewCookieJar(jar, vault)
+	require.NoError(t, err)
+
+	url, err := url.Parse("https://api.protonmail.ch")
+	require.NoError(t, err)
+
+	// There should be a cookie for the API.
+	require.NotEmpty(t, cookies.Cookies(url))
+}
+
+func TestKeychainMigration(t *testing.T) {
+	// Migration tested only for linux.
+	if runtime.GOOS != "linux" {
+		return
+	}
+
+	tmpDir := t.TempDir()
+
+	// Prepare for keychain migration test
+	{
+		require.NoError(t, os.Setenv("XDG_CONFIG_HOME", tmpDir))
+		oldCacheDir := filepath.Join(tmpDir, "protonmail", "bridge")
+		require.NoError(t, os.MkdirAll(oldCacheDir, 0o700))
+
+		oldPrefs, err := os.ReadFile(filepath.Join("testdata", "prefs.json"))
+		require.NoError(t, err)
+
+		require.NoError(t, os.WriteFile(
+			filepath.Join(oldCacheDir, "prefs.json"),
+			oldPrefs, 0o600,
+		))
+	}
+
+	locations := locations.New(bridge.NewTestLocationsProvider(tmpDir), "config-name")
+	settingsFolder, err := locations.ProvideSettingsPath()
+	require.NoError(t, err)
+
+	// Check that there is nothing yet
+	keychainName, err := vault.GetHelper(settingsFolder)
+	require.NoError(t, err)
+	require.Equal(t, "", keychainName)
+
+	// Check migration
+	require.NoError(t, migrateKeychainHelper(locations))
+	keychainName, err = vault.GetHelper(settingsFolder)
+	require.NoError(t, err)
+	require.Equal(t, "secret-service", keychainName)
+
+	// Change the migrated value
+	require.NoError(t, vault.SetHelper(settingsFolder, "different"))
+
+	// Calling migration again will not overwrite existing prefs
+	require.NoError(t, migrateKeychainHelper(locations))
+	keychainName, err = vault.GetHelper(settingsFolder)
+	require.NoError(t, err)
+	require.Equal(t, "different", keychainName)
+}
+
+func TestUserMigration(t *testing.T) {
+	keychainHelper := keychain.NewTestHelper()
+
+	keychain.Helpers["mock"] = func(string) (dockerCredentials.Helper, error) { return keychainHelper, nil }
+
+	kc, err := keychain.NewKeychain("mock", "bridge")
+	require.NoError(t, err)
+
+	require.NoError(t, kc.Put("brokenID", "broken"))
+	require.NoError(t, kc.Put(
+		"emptyID",
+		(&credentials.Credentials{}).Marshal(),
+	))
+
+	wantUID := "uidtoken"
+	wantRefresh := "refreshtoken"
+
+	wantCredentials := credentials.Credentials{
+		UserID:                "validID",
+		Name:                  "user@pm.me",
+		Emails:                "user@pm.me;alias@pm.me",
+		APIToken:              wantUID + ":" + wantRefresh,
+		MailboxPassword:       []byte("secret"),
+		BridgePassword:        "bElu2Q1Vusy28J3Wf56cIg",
+		Version:               "v2.3.X",
+		Timestamp:             100,
+		IsCombinedAddressMode: true,
+	}
+	require.NoError(t, kc.Put(
+		wantCredentials.UserID,
+		wantCredentials.Marshal(),
+	))
+
+	tmpDir := t.TempDir()
+	locations := locations.New(bridge.NewTestLocationsProvider(tmpDir), "config-name")
+	settingsFolder, err := locations.ProvideSettingsPath()
+	require.NoError(t, err)
+	require.NoError(t, vault.SetHelper(settingsFolder, "mock"))
+
+	token, err := crypto.RandomToken(32)
+	require.NoError(t, err)
+
+	v, corrupt, err := vault.New(settingsFolder, settingsFolder, token)
+	require.NoError(t, err)
+	require.False(t, corrupt)
+
+	require.NoError(t, migrateOldAccounts(locations, v))
+	require.Equal(t, []string{wantCredentials.UserID}, v.GetUserIDs())
+
+	require.NoError(t, v.GetUser(wantCredentials.UserID, func(u *vault.User) {
+		require.Equal(t, wantCredentials.UserID, u.UserID())
+		require.Equal(t, wantUID, u.AuthUID())
+		require.Equal(t, wantRefresh, u.AuthRef())
+		require.Equal(t, wantCredentials.MailboxPassword, u.KeyPass())
+		require.Equal(t,
+			[]byte(wantCredentials.BridgePassword),
+			algo.B64RawEncode(u.BridgePass()),
+		)
+		require.Equal(t, vault.CombinedMode, u.AddressMode())
+	}))
+}

internal/app/singleinstance.go

@@ -0,0 +1,70 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
+
+package app
+
+import (
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/Masterminds/semver/v3"
+	"github.com/ProtonMail/proton-bridge/v3/internal/focus"
+	"github.com/allan-simon/go-singleinstance"
+	"github.com/sirupsen/logrus"
+)
+
+// checkSingleInstance checks if another instance of the application is already running.
+// It tries to create a lock file at the given path.
+// If it succeeds, it returns the lock file and a nil error.
+//
+// For macOS and Linux when already running version is older than this instance
+// it will kill old and continue with this new bridge (i.e. no error returned).
+func checkSingleInstance(lockFilePath string, curVersion *semver.Version) (*os.File, error) {
+	if lock, err := singleinstance.CreateLockFile(lockFilePath); err == nil {
+		logrus.WithField("path", lockFilePath).Debug("Created lock file; no other instance is running")
+		return lock, nil
+	}
+
+	logrus.Debug("Failed to create lock file; another instance is running")
+
+	// We couldn't create the lock file, so another instance is probably running.
+	// Check if it's an older version of the app.
+	lastVersion, ok := focus.TryVersion()
+	if !ok {
+		return nil, fmt.Errorf("failed to determine version of running instance")
+	}
+
+	if !lastVersion.LessThan(curVersion) {
+		return nil, fmt.Errorf("running instance is newer than this one")
+	}
+
+	// The other instance is an older version, so we should kill it.
+	pid, err := getPID(lockFilePath)
+	if err != nil {
+		return nil, err
+	}
+
+	if err := killPID(pid); err != nil {
+		return nil, err
+	}
+
+	// Need to wait some time to release file lock
+	time.Sleep(time.Second)
+
+	return singleinstance.CreateLockFile(lockFilePath)
+}

internal/app/testdata/prefs.json

@@ -0,0 +1,31 @@
+{
+	"allow_proxy": "false",
+	"attachment_workers": "16",
+	"autostart": "true",
+	"autoupdate": "true",
+	"cache_compression": "true",
+	"cache_concurrent_read": "16",
+	"cache_concurrent_write": "16",
+	"cache_enabled": "true",
+	"cache_location": "/home/user/.config/protonmail/bridge/cache/c11/messages",
+	"cache_min_free_abs": "250000000",
+	"cache_min_free_rat": "",
+	"color_scheme": "blablabla",
+	"cookies": "{\"https://api.protonmail.ch\":[{\"Name\":\"Session-Id\",\"Value\":\"blablablablablablablablabla\",\"Path\":\"/\",\"Domain\":\"protonmail.ch\",\"Expires\":\"2023-02-19T00:20:40.269424437+01:00\",\"RawExpires\":\"\",\"MaxAge\":7776000,\"Secure\":true,\"HttpOnly\":true,\"SameSite\":0,\"Raw\":\"Session-Id=blablablablablablablablabla; Domain=protonmail.ch; Path=/; HttpOnly; Secure; Max-Age=7776000\",\"Unparsed\":null},{\"Name\":\"Tag\",\"Value\":\"default\",\"Path\":\"/\",\"Domain\":\"\",\"Expires\":\"2023-02-19T00:20:40.269428627+01:00\",\"RawExpires\":\"\",\"MaxAge\":7776000,\"Secure\":true,\"HttpOnly\":false,\"SameSite\":0,\"Raw\":\"Tag=default; Path=/; Secure; Max-Age=7776000\",\"Unparsed\":null}],\"https://protonmail.com\":[{\"Name\":\"Session-Id\",\"Value\":\"blablablablablablablablabla\",\"Path\":\"/\",\"Domain\":\"protonmail.com\",\"Expires\":\"2023-02-19T00:20:18.315084712+01:00\",\"RawExpires\":\"\",\"MaxAge\":7776000,\"Secure\":true,\"HttpOnly\":true,\"SameSite\":0,\"Raw\":\"Session-Id=Y3q2Mh-ClvqL6LWeYdfyPgAAABI; Domain=protonmail.com; Path=/; HttpOnly; Secure; Max-Age=7776000\",\"Unparsed\":null},{\"Name\":\"Tag\",\"Value\":\"redirect\",\"Path\":\"/\",\"Domain\":\"\",\"Expires\":\"2023-02-19T00:20:18.315087646+01:00\",\"RawExpires\":\"\",\"MaxAge\":7776000,\"Secure\":true,\"HttpOnly\":false,\"SameSite\":0,\"Raw\":\"Tag=redirect; Path=/; Secure; Max-Age=7776000\",\"Unparsed\":null}]}",
+	"fetch_workers": "16",
+	"first_time_start": "false",
+	"first_time_start_gui": "true",
+	"imap_workers": "16",
+	"is_all_mail_visible": "false",
+	"last_heartbeat": "325",
+	"last_used_version": "2.3.0+git",
+	"preferred_keychain": "secret-service",
+	"rebranding_migrated": "true",
+	"report_outgoing_email_without_encryption": "false",
+	"rollout": "0.4849529004202015",
+	"user_port_api": "1042",
+	"update_channel": "early",
+	"user_port_imap": "2143",
+	"user_port_smtp": "2025",
+	"user_ssl_smtp": "true"
+}

internal/app/vault.go

@@ -0,0 +1,143 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package app
+
+import (
+	"encoding/base64"
+	"fmt"
+	"path"
+
+	"github.com/ProtonMail/gopenpgp/v2/crypto"
+	"github.com/ProtonMail/proton-bridge/v3/internal/certs"
+	"github.com/ProtonMail/proton-bridge/v3/internal/constants"
+	"github.com/ProtonMail/proton-bridge/v3/internal/locations"
+	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
+	"github.com/ProtonMail/proton-bridge/v3/pkg/keychain"
+	"github.com/sirupsen/logrus"
+	"golang.org/x/exp/slices"
+)
+
+func WithVault(locations *locations.Locations, fn func(*vault.Vault, bool, bool) error) error {
+	logrus.Debug("Creating vault")
+	defer logrus.Debug("Vault stopped")
+
+	// Create the encVault.
+	encVault, insecure, corrupt, err := newVault(locations)
+	if err != nil {
+		return fmt.Errorf("could not create vault: %w", err)
+	}
+
+	logrus.WithFields(logrus.Fields{
+		"insecure": insecure,
+		"corrupt":  corrupt,
+	}).Debug("Vault created")
+
+	// Install the certificates if needed.
+	if installed := encVault.GetCertsInstalled(); !installed {
+		logrus.Debug("Installing certificates")
+
+		if err := certs.NewInstaller().InstallCert(encVault.GetBridgeTLSCert()); err != nil {
+			return fmt.Errorf("failed to install certs: %w", err)
+		}
+
+		if err := encVault.SetCertsInstalled(true); err != nil {
+			return fmt.Errorf("failed to set certs installed: %w", err)
+		}
+
+		logrus.Debug("Certificates successfully installed")
+	}
+
+	// GODT-1950: Add teardown actions (e.g. to close the vault).
+
+	return fn(encVault, insecure, corrupt)
+}
+
+func newVault(locations *locations.Locations) (*vault.Vault, bool, bool, error) {
+	vaultDir, err := locations.ProvideSettingsPath()
+	if err != nil {
+		return nil, false, false, fmt.Errorf("could not get vault dir: %w", err)
+	}
+
+	logrus.WithField("vaultDir", vaultDir).Debug("Loading vault from directory")
+
+	var (
+		vaultKey []byte
+		insecure bool
+	)
+
+	if key, err := getVaultKey(vaultDir); err != nil {
+		insecure = true
+
+		// We store the insecure vault in a separate directory
+		vaultDir = path.Join(vaultDir, "insecure")
+	} else {
+		vaultKey = key
+	}
+
+	gluonDir, err := locations.ProvideGluonPath()
+	if err != nil {
+		return nil, false, false, fmt.Errorf("could not provide gluon path: %w", err)
+	}
+
+	vault, corrupt, err := vault.New(vaultDir, gluonDir, vaultKey)
+	if err != nil {
+		return nil, false, false, fmt.Errorf("could not create vault: %w", err)
+	}
+
+	return vault, insecure, corrupt, nil
+}
+
+func getVaultKey(vaultDir string) ([]byte, error) {
+	helper, err := vault.GetHelper(vaultDir)
+	if err != nil {
+		return nil, fmt.Errorf("could not get keychain helper: %w", err)
+	}
+
+	keychain, err := keychain.NewKeychain(helper, constants.KeyChainName)
+	if err != nil {
+		return nil, fmt.Errorf("could not create keychain: %w", err)
+	}
+
+	secrets, err := keychain.List()
+	if err != nil {
+		return nil, fmt.Errorf("could not list keychain: %w", err)
+	}
+
+	if !slices.Contains(secrets, vaultSecretName) {
+		tok, err := crypto.RandomToken(32)
+		if err != nil {
+			return nil, fmt.Errorf("could not generate random token: %w", err)
+		}
+
+		if err := keychain.Put(vaultSecretName, base64.StdEncoding.EncodeToString(tok)); err != nil {
+			return nil, fmt.Errorf("could not put keychain item: %w", err)
+		}
+	}
+
+	_, keyEnc, err := keychain.Get(vaultSecretName)
+	if err != nil {
+		return nil, fmt.Errorf("could not get keychain item: %w", err)
+	}
+
+	keyDec, err := base64.StdEncoding.DecodeString(keyEnc)
+	if err != nil {
+		return nil, fmt.Errorf("could not decode keychain item: %w", err)
+	}
+
+	return keyDec, nil
+}

internal/async/context.go

@@ -0,0 +1,82 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package async
+
+import (
+	"context"
+	"sync"
+)
+
+// Abortable collects groups of functions that can be aborted by calling Abort.
+type Abortable struct {
+	abortFunc []context.CancelFunc
+	abortLock sync.RWMutex
+}
+
+func (a *Abortable) Do(ctx context.Context, fn func(context.Context)) {
+	fn(a.newCancelCtx(ctx))
+}
+
+func (a *Abortable) Abort() {
+	a.abortLock.RLock()
+	defer a.abortLock.RUnlock()
+
+	for _, fn := range a.abortFunc {
+		fn()
+	}
+}
+
+func (a *Abortable) newCancelCtx(ctx context.Context) context.Context {
+	a.abortLock.Lock()
+	defer a.abortLock.Unlock()
+
+	ctx, cancel := context.WithCancel(ctx)
+
+	a.abortFunc = append(a.abortFunc, cancel)
+
+	return ctx
+}
+
+// RangeContext iterates over the given channel until the context is canceled or the
+// channel is closed.
+func RangeContext[T any](ctx context.Context, ch <-chan T, fn func(T)) {
+	for {
+		select {
+		case v, ok := <-ch:
+			if !ok {
+				return
+			}
+
+			fn(v)
+
+		case <-ctx.Done():
+			return
+		}
+	}
+}
+
+// ForwardContext forwards all values from the src channel to the dst channel until the
+// context is canceled or the src channel is closed.
+func ForwardContext[T any](ctx context.Context, dst chan<- T, src <-chan T) {
+	RangeContext(ctx, src, func(v T) {
+		select {
+		case dst <- v:
+		case <-ctx.Done():
+		}
+	})
+}

internal/async/group.go

@@ -0,0 +1,233 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package async
+
+import (
+	"context"
+	"math/rand"
+	"sync"
+	"time"
+)
+
+type PanicHandler interface {
+	HandlePanic()
+}
+
+// Group is forked and improved version of "github.com/bradenaw/juniper/xsync.Group".
+//
+// It manages a group of goroutines. The main change to original is posibility
+// to wait passed function to finish without canceling it's context and adding
+// PanicHandler.
+type Group struct {
+	baseCtx context.Context
+	ctx     context.Context
+	jobCtx  context.Context
+	cancel  context.CancelFunc
+	finish  context.CancelFunc
+	wg      sync.WaitGroup
+
+	panicHandler PanicHandler
+}
+
+// NewGroup returns a Group ready for use. The context passed to any of the f functions will be a
+// descendant of ctx.
+func NewGroup(ctx context.Context, panicHandler PanicHandler) *Group {
+	bgCtx, cancel := context.WithCancel(ctx)
+	jobCtx, finish := context.WithCancel(ctx)
+	return &Group{
+		baseCtx:      ctx,
+		ctx:          bgCtx,
+		jobCtx:       jobCtx,
+		cancel:       cancel,
+		finish:       finish,
+		panicHandler: panicHandler,
+	}
+}
+
+// Once calls f once from another goroutine.
+func (g *Group) Once(f func(ctx context.Context)) {
+	g.wg.Add(1)
+	go func() {
+		defer g.handlePanic()
+
+		f(g.ctx)
+		g.wg.Done()
+	}()
+}
+
+// jitterDuration returns a random duration in [d - jitter, d + jitter].
+func jitterDuration(d time.Duration, jitter time.Duration) time.Duration {
+	return d + time.Duration(float64(jitter)*((rand.Float64()*2)-1)) //nolint:gosec
+}
+
+// Periodic spawns a goroutine that calls f once per interval +/- jitter.
+func (g *Group) Periodic(
+	interval time.Duration,
+	jitter time.Duration,
+	f func(ctx context.Context),
+) {
+	g.wg.Add(1)
+	go func() {
+		defer g.handlePanic()
+
+		defer g.wg.Done()
+
+		t := time.NewTimer(jitterDuration(interval, jitter))
+		defer t.Stop()
+
+		for {
+			if g.ctx.Err() != nil {
+				return
+			}
+
+			select {
+			case <-g.jobCtx.Done():
+				return
+			case <-t.C:
+			}
+
+			t.Reset(jitterDuration(interval, jitter))
+			f(g.ctx)
+		}
+	}()
+}
+
+// Trigger spawns a goroutine which calls f whenever the returned function is called. If f is
+// already running when triggered, f will run again immediately when it finishes.
+func (g *Group) Trigger(f func(ctx context.Context)) func() {
+	c := make(chan struct{}, 1)
+	g.wg.Add(1)
+	go func() {
+		defer g.handlePanic()
+
+		defer g.wg.Done()
+
+		for {
+			if g.ctx.Err() != nil {
+				return
+			}
+			select {
+			case <-g.jobCtx.Done():
+				return
+			case <-c:
+			}
+			f(g.ctx)
+		}
+	}()
+
+	return func() {
+		select {
+		case c <- struct{}{}:
+		default:
+		}
+	}
+}
+
+// PeriodicOrTrigger spawns a goroutine which calls f whenever the returned function is called.  If
+// f is already running when triggered, f will run again immediately when it finishes. Also calls f
+// when it has been interval+/-jitter since the last trigger.
+func (g *Group) PeriodicOrTrigger(
+	interval time.Duration,
+	jitter time.Duration,
+	f func(ctx context.Context),
+) func() {
+	c := make(chan struct{}, 1)
+	g.wg.Add(1)
+	go func() {
+		defer g.handlePanic()
+
+		defer g.wg.Done()
+
+		t := time.NewTimer(jitterDuration(interval, jitter))
+		defer t.Stop()
+
+		for {
+			if g.ctx.Err() != nil {
+				return
+			}
+			select {
+			case <-g.jobCtx.Done():
+				return
+			case <-t.C:
+				t.Reset(jitterDuration(interval, jitter))
+			case <-c:
+				if !t.Stop() {
+					<-t.C
+				}
+				t.Reset(jitterDuration(interval, jitter))
+			}
+			f(g.ctx)
+		}
+	}()
+
+	return func() {
+		select {
+		case c <- struct{}{}:
+		default:
+		}
+	}
+}
+
+func (g *Group) resetCtx() {
+	g.jobCtx, g.finish = context.WithCancel(g.baseCtx)
+	g.ctx, g.cancel = context.WithCancel(g.baseCtx)
+}
+
+// Cancel is send to all of the spawn goroutines and ends periodic
+// or trigger routines.
+func (g *Group) Cancel() {
+	g.cancel()
+	g.finish()
+	g.resetCtx()
+}
+
+// Finish will ends all periodic or polls routines. It will let
+// currently running functions to finish (cancel is not sent).
+//
+// It is not safe to call Wait concurrently with any other method on g.
+func (g *Group) Finish() {
+	g.finish()
+	g.jobCtx, g.finish = context.WithCancel(g.baseCtx)
+}
+
+// CancelAndWait cancels the context passed to any of the spawned goroutines and waits for all spawned
+// goroutines to exit.
+//
+// It is not safe to call Wait concurrently with any other method on g.
+func (g *Group) CancelAndWait() {
+	g.finish()
+	g.cancel()
+	g.wg.Wait()
+	g.resetCtx()
+}
+
+// WaitToFinish will ends all periodic or polls routines. It will wait for
+// currently running functions to finish (cancel is not sent).
+//
+// It is not safe to call Wait concurrently with any other method on g.
+func (g *Group) WaitToFinish() {
+	g.finish()
+	g.wg.Wait()
+	g.jobCtx, g.finish = context.WithCancel(g.baseCtx)
+}
+
+func (g *Group) handlePanic() {
+	if g.panicHandler != nil {
+		g.panicHandler.HandlePanic()
+	}
+}

internal/bridge/api.go

@@ -0,0 +1,45 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge
+
+import (
+	"net/http"
+
+	"github.com/Masterminds/semver/v3"
+	"github.com/ProtonMail/go-proton-api"
+	"github.com/ProtonMail/proton-bridge/v3/internal/constants"
+	"github.com/sirupsen/logrus"
+)
+
+// defaultAPIOptions returns a set of default API options for the given parameters.
+func defaultAPIOptions(
+	apiURL string,
+	version *semver.Version,
+	cookieJar http.CookieJar,
+	transport http.RoundTripper,
+	poolSize int,
+) []proton.Option {
+	return []proton.Option{
+		proton.WithHostURL(apiURL),
+		proton.WithAppVersion(constants.AppVersion(version.Original())),
+		proton.WithCookieJar(cookieJar),
+		proton.WithTransport(transport),
+		proton.WithAttPoolSize(poolSize),
+		proton.WithLogger(logrus.StandardLogger()),
+	}
+}

internal/bridge/api_default.go

@@ -13,24 +13,26 @@
 // GNU General Public License for more details.
 //
 // You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
 
 //go:build !build_qa
-// +build !build_qa
 
-package pmapi
+package bridge
 
 import (
 	"net/http"
+
+	"github.com/Masterminds/semver/v3"
+	"github.com/ProtonMail/go-proton-api"
 )
 
-func getRootURL() string {
-	return "https://api.protonmail.ch"
-}
-
-func newProxyDialerAndTransport(cfg Config) (*ProxyTLSDialer, http.RoundTripper) {
-	basicDialer := NewBasicTLSDialer(cfg)
-	pinningDialer := NewPinningTLSDialer(cfg, basicDialer)
-	proxyDialer := NewProxyTLSDialer(cfg, pinningDialer)
-	return proxyDialer, CreateTransportWithDialer(proxyDialer)
+// newAPIOptions returns a set of API options for the given parameters.
+func newAPIOptions(
+	apiURL string,
+	version *semver.Version,
+	cookieJar http.CookieJar,
+	transport http.RoundTripper,
+	poolSize int,
+) []proton.Option {
+	return defaultAPIOptions(apiURL, version, cookieJar, transport, poolSize)
 }

internal/bridge/api_qa.go

@@ -0,0 +1,53 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+//go:build build_qa
+
+package bridge
+
+import (
+	"net/http"
+	"os"
+
+	"github.com/Masterminds/semver/v3"
+	"github.com/ProtonMail/go-proton-api"
+)
+
+// newAPIOptions returns a set of API options for the given parameters.
+func newAPIOptions(
+	apiURL string,
+	version *semver.Version,
+	cookieJar http.CookieJar,
+	transport http.RoundTripper,
+	poolSize int,
+) []proton.Option {
+	opt := defaultAPIOptions(apiURL, version, cookieJar, transport, poolSize)
+
+	if host := os.Getenv("BRIDGE_API_HOST"); host != "" {
+		opt = append(opt, proton.WithHostURL(host))
+	}
+
+	if debug := os.Getenv("BRIDGE_API_DEBUG"); debug != "" {
+		opt = append(opt, proton.WithDebug(true))
+	}
+
+	if skipVerify := os.Getenv("BRIDGE_API_SKIP_VERIFY"); skipVerify != "" {
+		opt = append(opt, proton.WithSkipVerifyProofs())
+	}
+
+	return opt
+}

internal/bridge/bridge.go

@@ -13,313 +13,546 @@
 // GNU General Public License for more details.
 //
 // You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
 
-// Package bridge provides core functionality of Bridge app.
+// Package bridge implements the Bridge, which acts as the backend to the UI.
 package bridge
 
 import (
-	"errors"
+	"context"
+	"crypto/tls"
 	"fmt"
-	"strconv"
+	"net"
+	"net/http"
+	"sync"
 	"time"
 
 	"github.com/Masterminds/semver/v3"
-	"github.com/ProtonMail/go-autostart"
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/settings"
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/tls"
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/useragent"
-	"github.com/ProtonMail/proton-bridge/v2/internal/constants"
-	"github.com/ProtonMail/proton-bridge/v2/internal/metrics"
-	"github.com/ProtonMail/proton-bridge/v2/internal/sentry"
-	"github.com/ProtonMail/proton-bridge/v2/internal/store/cache"
-	"github.com/ProtonMail/proton-bridge/v2/internal/updater"
-	"github.com/ProtonMail/proton-bridge/v2/internal/users"
-	"github.com/ProtonMail/proton-bridge/v2/pkg/message"
-	"github.com/ProtonMail/proton-bridge/v2/pkg/pmapi"
-
-	"github.com/ProtonMail/proton-bridge/v2/pkg/listener"
-	logrus "github.com/sirupsen/logrus"
+	"github.com/ProtonMail/gluon"
+	imapEvents "github.com/ProtonMail/gluon/events"
+	"github.com/ProtonMail/gluon/reporter"
+	"github.com/ProtonMail/gluon/watcher"
+	"github.com/ProtonMail/go-proton-api"
+	"github.com/ProtonMail/proton-bridge/v3/internal/async"
+	"github.com/ProtonMail/proton-bridge/v3/internal/constants"
+	"github.com/ProtonMail/proton-bridge/v3/internal/events"
+	"github.com/ProtonMail/proton-bridge/v3/internal/focus"
+	"github.com/ProtonMail/proton-bridge/v3/internal/safe"
+	"github.com/ProtonMail/proton-bridge/v3/internal/user"
+	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
+	"github.com/bradenaw/juniper/xslices"
+	"github.com/emersion/go-smtp"
+	"github.com/go-resty/resty/v2"
+	"github.com/sirupsen/logrus"
 )
 
-var log = logrus.WithField("pkg", "bridge") //nolint:gochecknoglobals
-
-var ErrLocalCacheUnavailable = errors.New("local cache is unavailable")
-
 type Bridge struct {
-	*users.Users
+	// vault holds bridge-specific data, such as preferences and known users (authorized or not).
+	vault *vault.Vault
 
-	locations     Locator
-	settings      SettingsProvider
-	clientManager pmapi.Manager
-	updater       Updater
-	versioner     Versioner
-	tls           *tls.TLS
-	userAgent     *useragent.UserAgent
-	cacheProvider CacheProvider
-	autostart     *autostart.App
-	// Bridge's global errors list.
+	// users holds authorized users.
+	users     map[string]*user.User
+	usersLock safe.RWMutex
+
+	// api manages user API clients.
+	api        *proton.Manager
+	proxyCtl   ProxyController
+	identifier Identifier
+
+	// tlsConfig holds the bridge TLS config used by the IMAP and SMTP servers.
+	tlsConfig *tls.Config
+
+	// imapServer is the bridge's IMAP server.
+	imapServer   *gluon.Server
+	imapListener net.Listener
+	imapEventCh  chan imapEvents.Event
+
+	// smtpServer is the bridge's SMTP server.
+	smtpServer   *smtp.Server
+	smtpListener net.Listener
+
+	// updater is the bridge's updater.
+	updater   Updater
+	installCh chan installJob
+
+	// curVersion is the current version of the bridge,
+	// newVersion is the version that was installed by the updater.
+	curVersion     *semver.Version
+	newVersion     *semver.Version
+	newVersionLock safe.RWMutex
+
+	// focusService is used to raise the bridge window when needed.
+	focusService *focus.Service
+
+	// autostarter is the bridge's autostarter.
+	autostarter Autostarter
+
+	// locator is the bridge's locator.
+	locator Locator
+
+	// crashHandler
+	crashHandler async.PanicHandler
+
+	// reporter
+	reporter reporter.Reporter
+
+	// watchers holds all registered event watchers.
+	watchers     []*watcher.Watcher[events.Event]
+	watchersLock sync.RWMutex
+
+	// errors contains errors encountered during startup.
 	errors []error
 
-	isAllMailVisible bool
-	isFirstStart     bool
-	lastVersion      string
+	// These control the bridge's IMAP and SMTP logging behaviour.
+	logIMAPClient bool
+	logIMAPServer bool
+	logSMTP       bool
+
+	// tasks manages the bridge's goroutines.
+	tasks *async.Group
+
+	// goLoad triggers a load of disconnected users from the vault.
+	goLoad func()
+
+	// goUpdate triggers a check/install of updates.
+	goUpdate func()
 }
 
+// New creates a new bridge.
 func New( //nolint:funlen
-	locations Locator,
-	cacheProvider CacheProvider,
-	setting SettingsProvider,
-	sentryReporter *sentry.Reporter,
-	panicHandler users.PanicHandler,
-	eventListener listener.Listener,
-	tls *tls.TLS,
-	userAgent *useragent.UserAgent,
-	cache cache.Cache,
-	builder *message.Builder,
-	clientManager pmapi.Manager,
-	credStorer users.CredentialsStorer,
-	updater Updater,
-	versioner Versioner,
-	autostart *autostart.App,
-) *Bridge {
-	// Allow DoH before starting the app if the user has previously set this setting.
-	// This allows us to start even if protonmail is blocked.
-	if setting.GetBool(settings.AllowProxyKey) {
-		clientManager.AllowProxy()
-	}
+	locator Locator, // the locator to provide paths to store data
+	vault *vault.Vault, // the bridge's encrypted data store
+	autostarter Autostarter, // the autostarter to manage autostart settings
+	updater Updater, // the updater to fetch and install updates
+	curVersion *semver.Version, // the current version of the bridge
 
-	u := users.New(
-		locations,
-		panicHandler,
-		eventListener,
-		clientManager,
-		credStorer,
-		newStoreFactory(cacheProvider, sentryReporter, panicHandler, eventListener, cache, builder),
+	apiURL string, // the URL of the API to use
+	cookieJar http.CookieJar, // the cookie jar to use
+	identifier Identifier, // the identifier to keep track of the user agent
+	tlsReporter TLSReporter, // the TLS reporter to report TLS errors
+	roundTripper http.RoundTripper, // the round tripper to use for API requests
+	proxyCtl ProxyController, // the DoH controller
+	crashHandler async.PanicHandler,
+	reporter reporter.Reporter,
+
+	logIMAPClient, logIMAPServer bool, // whether to log IMAP client/server activity
+	logSMTP bool, // whether to log SMTP activity
+) (*Bridge, <-chan events.Event, error) {
+	// api is the user's API manager.
+	api := proton.New(newAPIOptions(apiURL, curVersion, cookieJar, roundTripper, vault.SyncAttPool())...)
+
+	// tasks holds all the bridge's background tasks.
+	tasks := async.NewGroup(context.Background(), crashHandler)
+
+	// imapEventCh forwards IMAP events from gluon instances to the bridge for processing.
+	imapEventCh := make(chan imapEvents.Event)
+
+	// bridge is the bridge.
+	bridge, err := newBridge(
+		tasks,
+		imapEventCh,
+
+		locator,
+		vault,
+		autostarter,
+		updater,
+		curVersion,
+		crashHandler,
+		reporter,
+
+		api,
+		identifier,
+		proxyCtl,
+		logIMAPClient, logIMAPServer, logSMTP,
 	)
-
-	b := &Bridge{
-		Users:            u,
-		locations:        locations,
-		settings:         setting,
-		clientManager:    clientManager,
-		updater:          updater,
-		versioner:        versioner,
-		tls:              tls,
-		userAgent:        userAgent,
-		cacheProvider:    cacheProvider,
-		autostart:        autostart,
-		isFirstStart:     false,
-		isAllMailVisible: setting.GetBool(settings.IsAllMailVisible),
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to create bridge: %w", err)
 	}
 
-	if setting.GetBool(settings.FirstStartKey) {
-		b.isFirstStart = true
-		if err := b.SendMetric(metrics.New(metrics.Setup, metrics.FirstStart, metrics.Label(constants.Version))); err != nil {
-			logrus.WithError(err).Error("Failed to send metric")
+	// Get an event channel for all events (individual events can be subscribed to later).
+	eventCh, _ := bridge.GetEvents()
+
+	// Initialize all of bridge's background tasks and operations.
+	if err := bridge.init(tlsReporter); err != nil {
+		return nil, nil, fmt.Errorf("failed to initialize bridge: %w", err)
+	}
+
+	// Start serving IMAP.
+	if err := bridge.serveIMAP(); err != nil {
+		bridge.PushError(ErrServeIMAP)
+	}
+
+	// Start serving SMTP.
+	if err := bridge.serveSMTP(); err != nil {
+		bridge.PushError(ErrServeSMTP)
+	}
+
+	return bridge, eventCh, nil
+}
+
+// nolint:funlen
+func newBridge(
+	tasks *async.Group,
+	imapEventCh chan imapEvents.Event,
+
+	locator Locator,
+	vault *vault.Vault,
+	autostarter Autostarter,
+	updater Updater,
+	curVersion *semver.Version,
+	crashHandler async.PanicHandler,
+	reporter reporter.Reporter,
+
+	api *proton.Manager,
+	identifier Identifier,
+	proxyCtl ProxyController,
+
+	logIMAPClient, logIMAPServer, logSMTP bool,
+) (*Bridge, error) {
+	tlsConfig, err := loadTLSConfig(vault)
+	if err != nil {
+		return nil, fmt.Errorf("failed to load TLS config: %w", err)
+	}
+
+	gluonDir, err := getGluonDir(vault)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get Gluon directory: %w", err)
+	}
+
+	imapServer, err := newIMAPServer(
+		gluonDir,
+		curVersion,
+		tlsConfig,
+		reporter,
+		logIMAPClient,
+		logIMAPServer,
+		imapEventCh,
+		tasks,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create IMAP server: %w", err)
+	}
+
+	focusService, err := focus.NewService(curVersion)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create focus service: %w", err)
+	}
+
+	bridge := &Bridge{
+		vault: vault,
+
+		users:     make(map[string]*user.User),
+		usersLock: safe.NewRWMutex(),
+
+		api:        api,
+		proxyCtl:   proxyCtl,
+		identifier: identifier,
+
+		tlsConfig:   tlsConfig,
+		imapServer:  imapServer,
+		imapEventCh: imapEventCh,
+
+		updater:   updater,
+		installCh: make(chan installJob),
+
+		curVersion:     curVersion,
+		newVersion:     curVersion,
+		newVersionLock: safe.NewRWMutex(),
+
+		crashHandler: crashHandler,
+		reporter:     reporter,
+
+		focusService: focusService,
+		autostarter:  autostarter,
+		locator:      locator,
+
+		logIMAPClient: logIMAPClient,
+		logIMAPServer: logIMAPServer,
+		logSMTP:       logSMTP,
+
+		tasks: tasks,
+	}
+
+	bridge.smtpServer = newSMTPServer(bridge, tlsConfig, logSMTP)
+
+	return bridge, nil
+}
+
+// nolint:funlen
+func (bridge *Bridge) init(tlsReporter TLSReporter) error {
+	// Enable or disable the proxy at startup.
+	if bridge.vault.GetProxyAllowed() {
+		bridge.proxyCtl.AllowProxy()
+	} else {
+		bridge.proxyCtl.DisallowProxy()
+	}
+
+	// Handle connection up/down events.
+	bridge.api.AddStatusObserver(func(status proton.Status) {
+		logrus.Info("API status changed: ", status)
+
+		switch {
+		case status == proton.StatusUp:
+			bridge.publish(events.ConnStatusUp{})
+			bridge.tasks.Once(bridge.onStatusUp)
+
+		case status == proton.StatusDown:
+			bridge.publish(events.ConnStatusDown{})
+			bridge.tasks.Once(bridge.onStatusDown)
 		}
-		setting.SetBool(settings.FirstStartKey, false)
+	})
+
+	// If any call returns a bad version code, we need to update.
+	bridge.api.AddErrorHandler(proton.AppVersionBadCode, func() {
+		logrus.Warn("App version is bad")
+		bridge.publish(events.UpdateForced{})
+	})
+
+	// Ensure all outgoing headers have the correct user agent.
+	bridge.api.AddPreRequestHook(func(_ *resty.Client, req *resty.Request) error {
+		req.SetHeader("User-Agent", bridge.identifier.GetUserAgent())
+		return nil
+	})
+
+	// Log all manager API requests (client requests are logged separately).
+	bridge.api.AddPostRequestHook(func(_ *resty.Client, r *resty.Response) error {
+		if _, ok := proton.ClientIDFromContext(r.Request.Context()); !ok {
+			logrus.Infof("[MANAGER] %v: %v %v", r.Status(), r.Request.Method, r.Request.URL)
+		}
+
+		return nil
+	})
+
+	// Publish a TLS issue event if a TLS issue is encountered.
+	bridge.tasks.Once(func(ctx context.Context) {
+		async.RangeContext(ctx, tlsReporter.GetTLSIssueCh(), func(struct{}) {
+			logrus.Warn("TLS issue encountered")
+			bridge.publish(events.TLSIssue{})
+		})
+	})
+
+	// Publish a raise event if the focus service is called.
+	bridge.tasks.Once(func(ctx context.Context) {
+		async.RangeContext(ctx, bridge.focusService.GetRaiseCh(), func(struct{}) {
+			logrus.Info("Focus service requested raise")
+			bridge.publish(events.Raise{})
+		})
+	})
+
+	// Handle any IMAP events that are forwarded to the bridge from gluon.
+	bridge.tasks.Once(func(ctx context.Context) {
+		async.RangeContext(ctx, bridge.imapEventCh, func(event imapEvents.Event) {
+			logrus.WithField("event", fmt.Sprintf("%T", event)).Debug("Received IMAP event")
+			bridge.handleIMAPEvent(event)
+		})
+	})
+
+	// Attempt to lazy load users when triggered.
+	bridge.goLoad = bridge.tasks.Trigger(func(ctx context.Context) {
+		logrus.Info("Loading users")
+
+		if err := bridge.loadUsers(ctx); err != nil {
+			logrus.WithError(err).Error("Failed to load users")
+		} else {
+			bridge.publish(events.AllUsersLoaded{})
+		}
+	})
+	defer bridge.goLoad()
+
+	// Check for updates when triggered.
+	bridge.goUpdate = bridge.tasks.PeriodicOrTrigger(constants.UpdateCheckInterval, 0, func(ctx context.Context) {
+		logrus.Info("Checking for updates")
+
+		version, err := bridge.updater.GetVersionInfo(ctx, bridge.api, bridge.vault.GetUpdateChannel())
+		if err != nil {
+			bridge.publish(events.UpdateCheckFailed{Error: err})
+		} else {
+			bridge.handleUpdate(version)
+		}
+	})
+	defer bridge.goUpdate()
+
+	// Install updates when available.
+	bridge.tasks.Once(func(ctx context.Context) {
+		async.RangeContext(ctx, bridge.installCh, func(job installJob) {
+			bridge.installUpdate(ctx, job)
+		})
+	})
+
+	return nil
+}
+
+// GetEvents returns a channel of events of the given type.
+// If no types are supplied, all events are returned.
+func (bridge *Bridge) GetEvents(ofType ...events.Event) (<-chan events.Event, context.CancelFunc) {
+	watcher := bridge.addWatcher(ofType...)
+
+	return watcher.GetChannel(), func() { bridge.remWatcher(watcher) }
+}
+
+func (bridge *Bridge) PushError(err error) {
+	bridge.errors = append(bridge.errors, err)
+}
+
+func (bridge *Bridge) GetErrors() []error {
+	return bridge.errors
+}
+
+func (bridge *Bridge) Close(ctx context.Context) {
+	logrus.Info("Closing bridge")
+
+	// Close the IMAP server.
+	if err := bridge.closeIMAP(ctx); err != nil {
+		logrus.WithError(err).Error("Failed to close IMAP server")
 	}
 
-	// Keep in bridge and update in settings the last used version.
-	b.lastVersion = b.settings.Get(settings.LastVersionKey)
-	b.settings.Set(settings.LastVersionKey, constants.Version)
+	// Close the SMTP server.
+	if err := bridge.closeSMTP(); err != nil {
+		logrus.WithError(err).Error("Failed to close SMTP server")
+	}
 
-	go b.heartbeat()
+	// Close all users.
+	safe.RLock(func() {
+		for _, user := range bridge.users {
+			user.Close()
+		}
+	}, bridge.usersLock)
+
+	// Stop all ongoing tasks.
+	bridge.tasks.CancelAndWait()
+
+	// Close the focus service.
+	bridge.focusService.Close()
+
+	// Close the watchers.
+	bridge.watchersLock.Lock()
+	defer bridge.watchersLock.Unlock()
+
+	for _, watcher := range bridge.watchers {
+		watcher.Close()
+	}
+
+	bridge.watchers = nil
+
+	// Save the last version of bridge that was run.
+	if err := bridge.vault.SetLastVersion(bridge.curVersion); err != nil {
+		logrus.WithError(err).Error("Failed to save last version")
+	}
+}
+
+func (bridge *Bridge) publish(event events.Event) {
+	bridge.watchersLock.RLock()
+	defer bridge.watchersLock.RUnlock()
+
+	logrus.WithField("event", event).Debug("Publishing event")
+
+	for _, watcher := range bridge.watchers {
+		if watcher.IsWatching(event) {
+			if ok := watcher.Send(event); !ok {
+				logrus.WithField("event", event).Warn("Failed to send event to watcher")
+			}
+		}
+	}
+}
+
+func (bridge *Bridge) addWatcher(ofType ...events.Event) *watcher.Watcher[events.Event] {
+	bridge.watchersLock.Lock()
+	defer bridge.watchersLock.Unlock()
+
+	watcher := watcher.New(ofType...)
+
+	bridge.watchers = append(bridge.watchers, watcher)
+
+	return watcher
+}
+
+func (bridge *Bridge) remWatcher(watcher *watcher.Watcher[events.Event]) {
+	bridge.watchersLock.Lock()
+	defer bridge.watchersLock.Unlock()
+
+	idx := xslices.Index(bridge.watchers, watcher)
+
+	if idx < 0 {
+		return
+	}
+
+	bridge.watchers = append(bridge.watchers[:idx], bridge.watchers[idx+1:]...)
+
+	watcher.Close()
+}
+
+func (bridge *Bridge) onStatusUp(ctx context.Context) {
+	logrus.Info("Handling API status up")
+
+	safe.RLock(func() {
+		for _, user := range bridge.users {
+			user.OnStatusUp(ctx)
+		}
+	}, bridge.usersLock)
+
+	bridge.goLoad()
+}
+
+func (bridge *Bridge) onStatusDown(ctx context.Context) {
+	logrus.Info("Handling API status down")
+
+	safe.RLock(func() {
+		for _, user := range bridge.users {
+			user.OnStatusDown(ctx)
+		}
+	}, bridge.usersLock)
+
+	for backoff := time.Second; ; backoff = min(backoff*2, 30*time.Second) {
+		select {
+		case <-ctx.Done():
+			return
+
+		case <-time.After(backoff):
+			logrus.Info("Pinging API")
+
+			if err := bridge.api.Ping(ctx); err != nil {
+				logrus.WithError(err).Warn("Ping failed, API is still unreachable")
+			} else {
+				return
+			}
+		}
+	}
+}
+
+func loadTLSConfig(vault *vault.Vault) (*tls.Config, error) {
+	cert, err := tls.X509KeyPair(vault.GetBridgeTLSCert(), vault.GetBridgeTLSKey())
+	if err != nil {
+		return nil, err
+	}
+
+	return &tls.Config{
+		Certificates: []tls.Certificate{cert},
+		MinVersion:   tls.VersionTLS12,
+	}, nil
+}
+
+func newListener(port int, useTLS bool, tlsConfig *tls.Config) (net.Listener, error) {
+	if useTLS {
+		tlsListener, err := tls.Listen("tcp", fmt.Sprintf("%v:%v", constants.Host, port), tlsConfig)
+		if err != nil {
+			return nil, err
+		}
+
+		return tlsListener, nil
+	}
+
+	netListener, err := net.Listen("tcp", fmt.Sprintf("%v:%v", constants.Host, port))
+	if err != nil {
+		return nil, err
+	}
+
+	return netListener, nil
+}
+
+func min(a, b time.Duration) time.Duration {
+	if a < b {
+		return a
+	}
 
 	return b
 }
-
-// heartbeat sends a heartbeat signal once a day.
-func (b *Bridge) heartbeat() {
-	for range time.Tick(time.Minute) {
-		lastHeartbeatDay, err := strconv.ParseInt(b.settings.Get(settings.LastHeartbeatKey), 10, 64)
-		if err != nil {
-			continue
-		}
-
-		// If we're still on the same day, don't send a heartbeat.
-		if time.Now().YearDay() == int(lastHeartbeatDay) {
-			continue
-		}
-
-		// We're on the next (or a different) day, so send a heartbeat.
-		if err := b.SendMetric(metrics.New(metrics.Heartbeat, metrics.Daily, metrics.NoLabel)); err != nil {
-			logrus.WithError(err).Error("Failed to send heartbeat")
-			continue
-		}
-
-		// Heartbeat was sent successfully so update the last heartbeat day.
-		b.settings.Set(settings.LastHeartbeatKey, fmt.Sprintf("%v", time.Now().YearDay()))
-	}
-}
-
-// GetUpdateChannel returns currently set update channel.
-func (b *Bridge) GetUpdateChannel() updater.UpdateChannel {
-	return updater.UpdateChannel(b.settings.Get(settings.UpdateChannelKey))
-}
-
-// SetUpdateChannel switches update channel.
-func (b *Bridge) SetUpdateChannel(channel updater.UpdateChannel) {
-	b.settings.Set(settings.UpdateChannelKey, string(channel))
-}
-
-func (b *Bridge) resetToLatestStable() error {
-	version, err := b.updater.Check()
-	if err != nil {
-		// If we can not check for updates - just remove all local updates and reset to base installer version.
-		// Not using `b.locations.ClearUpdates()` because `versioner.RemoveOtherVersions` can also handle
-		// case when it is needed to remove currently running verion.
-		if err := b.versioner.RemoveOtherVersions(semver.MustParse("0.0.0")); err != nil {
-			log.WithError(err).Error("Failed to clear updates while downgrading channel")
-		}
-		return nil
-	}
-
-	// If current version is same as upstream stable version - do nothing.
-	if version.Version.Equal(semver.MustParse(constants.Version)) {
-		return nil
-	}
-
-	if err := b.updater.InstallUpdate(version); err != nil {
-		return err
-	}
-
-	return b.versioner.RemoveOtherVersions(version.Version)
-}
-
-// FactoryReset will remove all local cache and settings.
-// It will also downgrade to latest stable version if user is on early version.
-func (b *Bridge) FactoryReset() {
-	wasEarly := b.GetUpdateChannel() == updater.EarlyChannel
-
-	b.settings.Set(settings.UpdateChannelKey, string(updater.StableChannel))
-
-	if wasEarly {
-		if err := b.resetToLatestStable(); err != nil {
-			log.WithError(err).Error("Failed to reset to latest stable version")
-		}
-	}
-
-	if err := b.Users.ClearData(); err != nil {
-		log.WithError(err).Error("Failed to remove bridge data")
-	}
-
-	if err := b.Users.ClearUsers(); err != nil {
-		log.WithError(err).Error("Failed to remove bridge users")
-	}
-}
-
-// GetKeychainApp returns current keychain helper.
-func (b *Bridge) GetKeychainApp() string {
-	return b.settings.Get(settings.PreferredKeychainKey)
-}
-
-// SetKeychainApp sets current keychain helper.
-func (b *Bridge) SetKeychainApp(helper string) {
-	b.settings.Set(settings.PreferredKeychainKey, helper)
-}
-
-func (b *Bridge) EnableCache() error {
-	if err := b.Users.EnableCache(); err != nil {
-		return err
-	}
-
-	b.settings.SetBool(settings.CacheEnabledKey, true)
-
-	return nil
-}
-
-func (b *Bridge) DisableCache() error {
-	if err := b.Users.DisableCache(); err != nil {
-		return err
-	}
-
-	b.settings.SetBool(settings.CacheEnabledKey, false)
-	// Reset back to the default location when disabling.
-	b.settings.Set(settings.CacheLocationKey, b.cacheProvider.GetDefaultMessageCacheDir())
-
-	return nil
-}
-
-func (b *Bridge) MigrateCache(from, to string) error {
-	if err := b.Users.MigrateCache(from, to); err != nil {
-		return err
-	}
-
-	b.settings.Set(settings.CacheLocationKey, to)
-
-	return nil
-}
-
-// SetProxyAllowed instructs the app whether to use DoH to access an API proxy if necessary.
-// It also needs to work before the app is initialised (because we may need to use the proxy at startup).
-func (b *Bridge) SetProxyAllowed(proxyAllowed bool) {
-	b.settings.SetBool(settings.AllowProxyKey, proxyAllowed)
-	if proxyAllowed {
-		b.clientManager.AllowProxy()
-	} else {
-		b.clientManager.DisallowProxy()
-	}
-}
-
-// GetProxyAllowed returns whether use of DoH is enabled to access an API proxy if necessary.
-func (b *Bridge) GetProxyAllowed() bool {
-	return b.settings.GetBool(settings.AllowProxyKey)
-}
-
-// AddError add an error to a global error list if it does not contain it yet. Adding nil is noop.
-func (b *Bridge) AddError(err error) {
-	if err == nil {
-		return
-	}
-	if b.HasError(err) {
-		return
-	}
-
-	b.errors = append(b.errors, err)
-}
-
-// DelError removes an error from global error list.
-func (b *Bridge) DelError(err error) {
-	for idx, val := range b.errors {
-		if val == err {
-			b.errors = append(b.errors[:idx], b.errors[idx+1:]...)
-			return
-		}
-	}
-}
-
-// HasError returnes true if global error list contains an err.
-func (b *Bridge) HasError(err error) bool {
-	for _, val := range b.errors {
-		if val == err {
-			return true
-		}
-	}
-
-	return false
-}
-
-// GetLastVersion returns the version which was used in previous execution of
-// Bridge.
-func (b *Bridge) GetLastVersion() string {
-	return b.lastVersion
-}
-
-// IsFirstStart returns true when Bridge is running for first time or after
-// factory reset.
-func (b *Bridge) IsFirstStart() bool {
-	return b.isFirstStart
-}
-
-// IsAllMailVisible can be called extensively by IMAP. Therefore, it is better
-// to cache the value instead of reading from settings file.
-func (b *Bridge) IsAllMailVisible() bool {
-	return b.isAllMailVisible
-}
-
-func (b *Bridge) SetIsAllMailVisible(isVisible bool) {
-	b.settings.SetBool(settings.IsAllMailVisible, isVisible)
-	b.isAllMailVisible = isVisible
-}

internal/bridge/bridge_test.go

@@ -0,0 +1,644 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge_test
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net/http"
+	"os"
+	"runtime"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/Masterminds/semver/v3"
+	"github.com/ProtonMail/go-proton-api"
+	"github.com/ProtonMail/go-proton-api/server"
+	"github.com/ProtonMail/go-proton-api/server/backend"
+	"github.com/ProtonMail/gopenpgp/v2/crypto"
+	"github.com/ProtonMail/proton-bridge/v3/internal/bridge"
+	"github.com/ProtonMail/proton-bridge/v3/internal/certs"
+	"github.com/ProtonMail/proton-bridge/v3/internal/cookies"
+	"github.com/ProtonMail/proton-bridge/v3/internal/events"
+	"github.com/ProtonMail/proton-bridge/v3/internal/focus"
+	"github.com/ProtonMail/proton-bridge/v3/internal/locations"
+	"github.com/ProtonMail/proton-bridge/v3/internal/updater"
+	"github.com/ProtonMail/proton-bridge/v3/internal/user"
+	"github.com/ProtonMail/proton-bridge/v3/internal/useragent"
+	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
+	"github.com/ProtonMail/proton-bridge/v3/tests"
+	"github.com/bradenaw/juniper/xslices"
+	"github.com/stretchr/testify/require"
+)
+
+var (
+	username = "username"
+	password = []byte("password")
+
+	v2_3_0 = semver.MustParse("2.3.0")
+	v2_4_0 = semver.MustParse("2.4.0")
+)
+
+func init() {
+	user.EventPeriod = 100 * time.Millisecond
+	user.EventJitter = 0
+	backend.GenerateKey = tests.FastGenerateKey
+	certs.GenerateCert = tests.FastGenerateCert
+}
+
+func TestBridge_ConnStatus(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Get a stream of connection status events.
+			eventCh, done := bridge.GetEvents(events.ConnStatusUp{}, events.ConnStatusDown{})
+			defer done()
+
+			// Simulate network disconnect.
+			netCtl.Disable()
+
+			// Trigger some operation that will fail due to the network disconnect.
+			_, err := bridge.LoginFull(context.Background(), username, password, nil, nil)
+			require.Error(t, err)
+
+			// Wait for the event.
+			require.Equal(t, events.ConnStatusDown{}, <-eventCh)
+
+			// Simulate network reconnect.
+			netCtl.Enable()
+
+			// Trigger some operation that will succeed due to the network reconnect.
+			userID, err := bridge.LoginFull(context.Background(), username, password, nil, nil)
+			require.NoError(t, err)
+			require.NotEmpty(t, userID)
+
+			// Wait for the event.
+			require.Equal(t, events.ConnStatusUp{}, <-eventCh)
+		})
+	})
+}
+
+func TestBridge_TLSIssue(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Get a stream of TLS issue events.
+			tlsEventCh, done := bridge.GetEvents(events.TLSIssue{})
+			defer done()
+
+			// Simulate a TLS issue.
+			go func() {
+				mocks.TLSIssueCh <- struct{}{}
+			}()
+
+			// Wait for the event.
+			require.IsType(t, events.TLSIssue{}, <-tlsEventCh)
+		})
+	})
+}
+
+func TestBridge_Focus(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Get a stream of TLS issue events.
+			raiseCh, done := bridge.GetEvents(events.Raise{})
+			defer done()
+
+			// Simulate a focus event.
+			focus.TryRaise()
+
+			// Wait for the event.
+			require.IsType(t, events.Raise{}, <-raiseCh)
+		})
+	})
+}
+
+func TestBridge_UserAgent(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		var (
+			calls []server.Call
+			lock  sync.Mutex
+		)
+
+		s.AddCallWatcher(func(call server.Call) {
+			lock.Lock()
+			defer lock.Unlock()
+
+			calls = append(calls, call)
+		})
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Set the platform to something other than the default.
+			bridge.SetCurrentPlatform("platform")
+
+			// Assert that the user agent then contains the platform.
+			require.Contains(t, bridge.GetCurrentUserAgent(), "platform")
+
+			// Login the user.
+			_, err := bridge.LoginFull(context.Background(), username, password, nil, nil)
+			require.NoError(t, err)
+
+			lock.Lock()
+			defer lock.Unlock()
+
+			// Assert that the user agent was sent to the API.
+			require.Contains(t, calls[len(calls)-1].RequestHeader.Get("User-Agent"), bridge.GetCurrentUserAgent())
+		})
+	})
+}
+
+func TestBridge_Cookies(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		var (
+			sessionIDs     []string
+			sessionIDsLock sync.RWMutex
+		)
+
+		// Save any session IDs we use.
+		s.AddCallWatcher(func(call server.Call) {
+			cookie, err := (&http.Request{Header: call.RequestHeader}).Cookie("Session-Id")
+			if err != nil {
+				return
+			}
+
+			sessionIDsLock.Lock()
+			defer sessionIDsLock.Unlock()
+
+			sessionIDs = append(sessionIDs, cookie.Value)
+		})
+
+		// Start bridge and add a user so that API assigns us a session ID via cookie.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			_, err := bridge.LoginFull(context.Background(), username, password, nil, nil)
+			require.NoError(t, err)
+		})
+
+		// Start bridge again and check that it uses the same session ID.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// ...
+		})
+
+		// We should have used just one session ID.
+		sessionIDsLock.Lock()
+		defer sessionIDsLock.Unlock()
+
+		require.Len(t, xslices.Unique(sessionIDs), 1)
+	})
+}
+
+func TestBridge_CheckUpdate(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Disable autoupdate for this test.
+			require.NoError(t, bridge.SetAutoUpdate(false))
+
+			// Get a stream of update not available events.
+			noUpdateCh, done := bridge.GetEvents(events.UpdateNotAvailable{})
+			defer done()
+
+			// We are currently on the latest version.
+			bridge.CheckForUpdates()
+
+			// we should receive an event indicating that no update is available.
+			require.Equal(t, events.UpdateNotAvailable{}, <-noUpdateCh)
+
+			// Simulate a new version being available.
+			mocks.Updater.SetLatestVersion(v2_4_0, v2_3_0)
+
+			// Get a stream of update available events.
+			updateCh, done := bridge.GetEvents(events.UpdateAvailable{})
+			defer done()
+
+			// Check for updates.
+			bridge.CheckForUpdates()
+
+			// We should receive an event indicating that an update is available.
+			require.Equal(t, events.UpdateAvailable{
+				Version: updater.VersionInfo{
+					Version:           v2_4_0,
+					MinAuto:           v2_3_0,
+					RolloutProportion: 1.0,
+				},
+				Silent:     false,
+				Compatible: true,
+			}, <-updateCh)
+		})
+	})
+}
+
+func TestBridge_AutoUpdate(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Enable autoupdate for this test.
+			require.NoError(t, bridge.SetAutoUpdate(true))
+
+			// Get a stream of update events.
+			updateCh, done := bridge.GetEvents(events.UpdateInstalled{})
+			defer done()
+
+			// Simulate a new version being available.
+			mocks.Updater.SetLatestVersion(v2_4_0, v2_3_0)
+
+			// Check for updates.
+			bridge.CheckForUpdates()
+
+			// We should receive an event indicating that the update was silently installed.
+			require.Equal(t, events.UpdateInstalled{
+				Version: updater.VersionInfo{
+					Version:           v2_4_0,
+					MinAuto:           v2_3_0,
+					RolloutProportion: 1.0,
+				},
+				Silent: true,
+			}, <-updateCh)
+		})
+	})
+}
+
+func TestBridge_ManualUpdate(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Disable autoupdate for this test.
+			require.NoError(t, bridge.SetAutoUpdate(false))
+
+			// Get a stream of update available events.
+			updateCh, done := bridge.GetEvents(events.UpdateAvailable{})
+			defer done()
+
+			// Simulate a new version being available, but it's too new for us.
+			mocks.Updater.SetLatestVersion(v2_4_0, v2_4_0)
+
+			// Check for updates.
+			bridge.CheckForUpdates()
+
+			// We should receive an event indicating an update is available, but we can't install it.
+			require.Equal(t, events.UpdateAvailable{
+				Version: updater.VersionInfo{
+					Version:           v2_4_0,
+					MinAuto:           v2_4_0,
+					RolloutProportion: 1.0,
+				},
+				Silent:     false,
+				Compatible: false,
+			}, <-updateCh)
+		})
+	})
+}
+
+func TestBridge_ForceUpdate(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Get a stream of update events.
+			updateCh, done := bridge.GetEvents(events.UpdateForced{})
+			defer done()
+
+			// Set the minimum accepted app version to something newer than the current version.
+			s.SetMinAppVersion(v2_4_0)
+
+			// Try to login the user. It will fail because the bridge is too old.
+			_, err := bridge.LoginFull(context.Background(), username, password, nil, nil)
+			require.Error(t, err)
+
+			// We should get an update required event.
+			require.Equal(t, events.UpdateForced{}, <-updateCh)
+		})
+	})
+}
+
+func TestBridge_BadVaultKey(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		var userID string
+
+		// Login a user.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			newUserID, err := bridge.LoginFull(context.Background(), username, password, nil, nil)
+			require.NoError(t, err)
+
+			userID = newUserID
+		})
+
+		// Start bridge with the correct vault key -- it should load the users correctly.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			require.ElementsMatch(t, []string{userID}, bridge.GetUserIDs())
+		})
+
+		// Start bridge with a bad vault key, the vault will be wiped and bridge will show no users.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, []byte("bad"), func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			require.Empty(t, bridge.GetUserIDs())
+		})
+
+		// Start bridge with a nil vault key, the vault will be wiped and bridge will show no users.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, nil, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			require.Empty(t, bridge.GetUserIDs())
+		})
+	})
+}
+
+func TestBridge_MissingGluonDir(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		var gluonDir string
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			_, err := bridge.LoginFull(context.Background(), username, password, nil, nil)
+			require.NoError(t, err)
+
+			// Move the gluon dir.
+			require.NoError(t, bridge.SetGluonDir(ctx, t.TempDir()))
+
+			// Get the gluon dir.
+			gluonDir = bridge.GetGluonDir()
+		})
+
+		// The user removes the gluon dir while bridge is not running.
+		require.NoError(t, os.RemoveAll(gluonDir))
+
+		// Bridge starts but can't find the gluon dir; there should be no error.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// ...
+		})
+	})
+}
+
+func TestBridge_AddressWithoutKeys(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		m := proton.New(
+			proton.WithHostURL(s.GetHostURL()),
+			proton.WithTransport(proton.InsecureTransport()),
+		)
+		defer m.Close()
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Create a user which will have an address without keys.
+			userID, _, err := s.CreateUser("nokeys", "nokeys@pm.me", []byte("password"))
+			require.NoError(t, err)
+
+			// Create an additional address for the user; it will not have keys.
+			aliasAddrID, err := s.CreateAddress(userID, "alias@pm.me", []byte("password"))
+			require.NoError(t, err)
+
+			// Create an API client so we can remove the address keys.
+			c, _, err := m.NewClientWithLogin(ctx, "nokeys", []byte("password"))
+			require.NoError(t, err)
+			defer c.Close()
+
+			// Get the alias address.
+			aliasAddr, err := c.GetAddress(ctx, aliasAddrID)
+			require.NoError(t, err)
+
+			// Remove the address keys.
+			require.NoError(t, s.RemoveAddressKey(userID, aliasAddrID, aliasAddr.Keys[0].ID))
+
+			// Watch for sync finished event.
+			syncCh, done := chToType[events.Event, events.SyncFinished](bridge.GetEvents(events.SyncFinished{}))
+			defer done()
+
+			// We should be able to log the user in.
+			require.NoError(t, getErr(bridge.LoginFull(context.Background(), "nokeys", []byte("password"), nil, nil)))
+			require.NoError(t, err)
+
+			// The sync should eventually finish for the user without keys.
+			require.Equal(t, userID, (<-syncCh).UserID)
+		})
+	})
+}
+
+func TestBridge_FactoryReset(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, _ *bridge.Mocks) {
+			// The settings should be their default values.
+			require.True(t, bridge.GetAutoUpdate())
+			require.Equal(t, updater.StableChannel, bridge.GetUpdateChannel())
+
+			// Login the user.
+			userID, err := bridge.LoginFull(ctx, username, password, nil, nil)
+			require.NoError(t, err)
+
+			// Change some settings.
+			require.NoError(t, bridge.SetAutoUpdate(false))
+			require.NoError(t, bridge.SetUpdateChannel(updater.EarlyChannel))
+
+			// The user is now connected.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Equal(t, []string{userID}, getConnectedUserIDs(t, bridge))
+
+			// The settings should be changed.
+			require.False(t, bridge.GetAutoUpdate())
+			require.Equal(t, updater.EarlyChannel, bridge.GetUpdateChannel())
+
+			// Perform a factory reset.
+			bridge.FactoryReset(ctx)
+
+			// The user is gone.
+			require.Equal(t, []string{}, bridge.GetUserIDs())
+			require.Equal(t, []string{}, getConnectedUserIDs(t, bridge))
+		})
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, _ *bridge.Mocks) {
+			// The settings should be reset.
+			require.True(t, bridge.GetAutoUpdate())
+			require.Equal(t, updater.StableChannel, bridge.GetUpdateChannel())
+		})
+	})
+}
+
+func TestBridge_ChangeCacheDirectoryFailsBetweenDifferentVolumes(t *testing.T) {
+	if runtime.GOOS != "windows" {
+		t.Skip("Test only necessary on windows")
+	}
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Change directory
+			err := bridge.SetGluonDir(ctx, "XX:\\")
+			require.Error(t, err)
+		})
+	})
+}
+
+func TestBridge_ChangeCacheDirectory(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			newCacheDir := t.TempDir()
+			currentCacheDir := bridge.GetGluonDir()
+
+			// Login the user.
+			userID, err := bridge.LoginFull(ctx, username, password, nil, nil)
+			require.NoError(t, err)
+
+			// The user is now connected.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Equal(t, []string{userID}, getConnectedUserIDs(t, bridge))
+
+			// Change directory
+			err = bridge.SetGluonDir(ctx, newCacheDir)
+			require.NoError(t, err)
+
+			_, err = os.ReadDir(currentCacheDir)
+			require.True(t, os.IsNotExist(err))
+
+			require.Equal(t, newCacheDir, bridge.GetGluonDir())
+		})
+	})
+}
+
+// withEnv creates the full test environment and runs the tests.
+func withEnv(t *testing.T, tests func(context.Context, *server.Server, *proton.NetCtl, bridge.Locator, []byte), opts ...server.Option) {
+	server := server.New(opts...)
+	defer server.Close()
+
+	// Add test user.
+	_, _, err := server.CreateUser(username, username+"@pm.me", password)
+	require.NoError(t, err)
+
+	// Generate a random vault key.
+	vaultKey, err := crypto.RandomToken(32)
+	require.NoError(t, err)
+
+	// Create a context used for the test.
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	// Create a net controller so we can simulate network connectivity issues.
+	netCtl := proton.NewNetCtl()
+
+	// Create a locations object to provide temporary locations for bridge data during the test.
+	locations := locations.New(bridge.NewTestLocationsProvider(t.TempDir()), "config-name")
+
+	// Run the tests.
+	tests(ctx, server, netCtl, locations, vaultKey)
+}
+
+// withBridge creates a new bridge which points to the given API URL and uses the given keychain, and closes it when done.
+func withBridge(
+	ctx context.Context,
+	t *testing.T,
+	apiURL string,
+	netCtl *proton.NetCtl,
+	locator bridge.Locator,
+	vaultKey []byte,
+	tests func(*bridge.Bridge, *bridge.Mocks),
+) {
+	// Create the mock objects used in the tests.
+	mocks := bridge.NewMocks(t, v2_3_0, v2_3_0)
+	defer mocks.Close()
+
+	// Bridge will enable the proxy by default at startup.
+	mocks.ProxyCtl.EXPECT().AllowProxy()
+
+	// Get the path to the vault.
+	vaultDir, err := locator.ProvideSettingsPath()
+	require.NoError(t, err)
+
+	// Create the vault.
+	vault, _, err := vault.New(vaultDir, t.TempDir(), vaultKey)
+	require.NoError(t, err)
+
+	// Create a new cookie jar.
+	cookieJar, err := cookies.NewCookieJar(bridge.NewTestCookieJar(), vault)
+	require.NoError(t, err)
+	defer func() { require.NoError(t, cookieJar.PersistCookies()) }()
+
+	// Create a new bridge.
+	bridge, eventCh, err := bridge.New(
+		// The app stuff.
+		locator,
+		vault,
+		mocks.Autostarter,
+		mocks.Updater,
+		v2_3_0,
+
+		// The API stuff.
+		apiURL,
+		cookieJar,
+		useragent.New(),
+		mocks.TLSReporter,
+		proton.NewDialer(netCtl, &tls.Config{InsecureSkipVerify: true}).GetRoundTripper(),
+		mocks.ProxyCtl,
+		mocks.CrashHandler,
+		mocks.Reporter,
+
+		// The logging stuff.
+		os.Getenv("BRIDGE_LOG_IMAP_CLIENT") == "1",
+		os.Getenv("BRIDGE_LOG_IMAP_SERVER") == "1",
+		os.Getenv("BRIDGE_LOG_SMTP") == "1",
+	)
+	require.NoError(t, err)
+	require.Empty(t, bridge.GetErrors())
+
+	// Wait for bridge to finish loading users.
+	waitForEvent(t, eventCh, events.AllUsersLoaded{})
+
+	// Set random IMAP and SMTP ports for the tests.
+	require.NoError(t, bridge.SetIMAPPort(0))
+	require.NoError(t, bridge.SetSMTPPort(0))
+
+	// Close the bridge when done.
+	defer bridge.Close(ctx)
+
+	// Use the bridge.
+	tests(bridge, mocks)
+}
+
+func waitForEvent[T any](t *testing.T, eventCh <-chan events.Event, wantEvent T) {
+	t.Helper()
+
+	for event := range eventCh {
+		switch event.(type) { // nolint:gocritic
+		case T:
+			return
+		}
+	}
+}
+
+// must is a helper function that panics on error.
+func must[T any](val T, err error) T {
+	if err != nil {
+		panic(err)
+	}
+
+	return val
+}
+
+func getConnectedUserIDs(t *testing.T, b *bridge.Bridge) []string {
+	t.Helper()
+
+	return xslices.Filter(b.GetUserIDs(), func(userID string) bool {
+		info, err := b.GetUserInfo(userID)
+		require.NoError(t, err)
+
+		return info.State == bridge.Connected
+	})
+}
+
+func chToType[In, Out any](inCh <-chan In, done func()) (<-chan Out, func()) {
+	outCh := make(chan Out)
+
+	go func() {
+		defer close(outCh)
+
+		for in := range inCh {
+			out, ok := any(in).(Out)
+			if !ok {
+				panic(fmt.Sprintf("unexpected type %T", in))
+			}
+
+			outCh <- out
+		}
+	}()
+
+	return outCh, done
+}

internal/bridge/bug_report.go

@@ -21,86 +21,116 @@ import (
 	"archive/zip"
 	"bytes"
 	"context"
-	"errors"
 	"io"
 	"os"
 	"path/filepath"
 	"sort"
 
-	"github.com/ProtonMail/proton-bridge/v2/internal/logging"
-	"github.com/ProtonMail/proton-bridge/v2/pkg/pmapi"
+	"github.com/ProtonMail/go-proton-api"
+	"github.com/ProtonMail/proton-bridge/v3/internal/constants"
+	"github.com/ProtonMail/proton-bridge/v3/internal/logging"
+	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
 )
 
 const (
-	MaxAttachmentSize       = 7 * 1024 * 1024 // MaxAttachmentSize 7 MB total limit
+	MaxTotalAttachmentSize  = 7 * (1 << 20)
 	MaxCompressedFilesCount = 6
 )
 
-var ErrSizeTooLarge = errors.New("file is too big")
+func (bridge *Bridge) ReportBug(ctx context.Context, osType, osVersion, description, username, email, client string, attachLogs bool) error { //nolint:funlen
+	var account string
 
-// ReportBug reports a new bug from the user.
-func (b *Bridge) ReportBug(osType, osVersion, description, accountName, address, emailClient string, attachLogs bool) error {
-	if user, err := b.GetUser(address); err == nil {
-		accountName = user.Username()
-	} else if users := b.GetUsers(); len(users) > 0 {
-		accountName = users[0].Username()
+	if info, err := bridge.QueryUserInfo(username); err == nil {
+		account = info.Username
+	} else if userIDs := bridge.GetUserIDs(); len(userIDs) > 0 {
+		if err := bridge.vault.GetUser(userIDs[0], func(user *vault.User) {
+			account = user.Username()
+		}); err != nil {
+			return err
+		}
 	}
 
-	report := pmapi.ReportBugReq{
-		OS:          osType,
-		OSVersion:   osVersion,
-		Browser:     emailClient,
-		Title:       "[Bridge] Bug",
-		Description: description,
-		Username:    accountName,
-		Email:       address,
-	}
+	var atts []proton.ReportBugAttachment
 
 	if attachLogs {
-		logs, err := b.getMatchingLogs(
-			func(filename string) bool {
-				return logging.MatchLogName(filename) && !logging.MatchStackTraceName(filename)
-			},
-		)
+		logs, err := getMatchingLogs(bridge.locator, func(filename string) bool {
+			return logging.MatchLogName(filename) && !logging.MatchStackTraceName(filename)
+		})
 		if err != nil {
-			log.WithError(err).Error("Can't get log files list")
+			return err
 		}
-		crashes, err := b.getMatchingLogs(
-			func(filename string) bool {
-				return logging.MatchLogName(filename) && logging.MatchStackTraceName(filename)
-			},
-		)
+
+		crashes, err := getMatchingLogs(bridge.locator, func(filename string) bool {
+			return logging.MatchLogName(filename) && logging.MatchStackTraceName(filename)
+		})
 		if err != nil {
-			log.WithError(err).Error("Can't get crash files list")
+			return err
+		}
+
+		guiLogs, err := getMatchingLogs(bridge.locator, func(filename string) bool {
+			return logging.MatchGUILogName(filename) && !logging.MatchStackTraceName(filename)
+		})
+		if err != nil {
+			return err
 		}
 
 		var matchFiles []string
 
+		// Include bridge logs, up to a maximum amount.
 		matchFiles = append(matchFiles, logs[max(0, len(logs)-(MaxCompressedFilesCount/2)):]...)
+
+		// Include crash logs, up to a maximum amount.
 		matchFiles = append(matchFiles, crashes[max(0, len(crashes)-(MaxCompressedFilesCount/2)):]...)
 
+		// bridge-gui keeps just one small (~ 1kb) log file; we always include it.
+		if len(guiLogs) > 0 {
+			matchFiles = append(matchFiles, guiLogs[len(guiLogs)-1])
+		}
+
 		archive, err := zipFiles(matchFiles)
 		if err != nil {
-			log.WithError(err).Error("Can't zip logs and crashes")
+			return err
 		}
 
-		if archive != nil {
-			report.AddAttachment("logs.zip", "application/zip", archive)
+		body, err := io.ReadAll(archive)
+		if err != nil {
+			return err
 		}
+
+		atts = append(atts, proton.ReportBugAttachment{
+			Name:     "logs.zip",
+			Filename: "logs.zip",
+			MIMEType: "application/zip",
+			Body:     body,
+		})
 	}
 
-	return b.clientManager.ReportBug(context.Background(), report)
+	return bridge.api.ReportBug(ctx, proton.ReportBugReq{
+		OS:        osType,
+		OSVersion: osVersion,
+
+		Title:       "[Bridge] Bug",
+		Description: description,
+
+		Client:        client,
+		ClientType:    proton.ClientTypeEmail,
+		ClientVersion: constants.AppVersion(bridge.curVersion.Original()),
+
+		Username: account,
+		Email:    email,
+	}, atts...)
 }
 
 func max(a, b int) int {
 	if a > b {
 		return a
 	}
+
 	return b
 }
 
-func (b *Bridge) getMatchingLogs(filenameMatchFunc func(string) bool) (filenames []string, err error) {
-	logsPath, err := b.locations.ProvideLogsPath()
+func getMatchingLogs(locator Locator, filenameMatchFunc func(string) bool) (filenames []string, err error) {
+	logsPath, err := locator.ProvideLogsPath()
 	if err != nil {
 		return nil, err
 	}
@@ -117,24 +147,25 @@ func (b *Bridge) getMatchingLogs(filenameMatchFunc func(string) bool) (filenames
 			matchFiles = append(matchFiles, filepath.Join(logsPath, file.Name()))
 		}
 	}
+
 	sort.Strings(matchFiles) // Sorted by timestamp: oldest first.
 
 	return matchFiles, nil
 }
 
-type LimitedBuffer struct {
+type limitedBuffer struct {
 	capacity int
 	buf      *bytes.Buffer
 }
 
-func NewLimitedBuffer(capacity int) *LimitedBuffer {
-	return &LimitedBuffer{
+func newLimitedBuffer(capacity int) *limitedBuffer {
+	return &limitedBuffer{
 		capacity: capacity,
 		buf:      bytes.NewBuffer(make([]byte, 0, capacity)),
 	}
 }
 
-func (b *LimitedBuffer) Write(p []byte) (n int, err error) {
+func (b *limitedBuffer) Write(p []byte) (n int, err error) {
 	if len(p)+b.buf.Len() > b.capacity {
 		return 0, ErrSizeTooLarge
 	}
@@ -142,7 +173,7 @@ func (b *LimitedBuffer) Write(p []byte) (n int, err error) {
 	return b.buf.Write(p)
 }
 
-func (b *LimitedBuffer) Read(p []byte) (n int, err error) {
+func (b *limitedBuffer) Read(p []byte) (n int, err error) {
 	return b.buf.Read(p)
 }
 
@@ -151,14 +182,13 @@ func zipFiles(filenames []string) (io.Reader, error) {
 		return nil, nil
 	}
 
-	buf := NewLimitedBuffer(MaxAttachmentSize)
+	buf := newLimitedBuffer(MaxTotalAttachmentSize)
 
 	w := zip.NewWriter(buf)
 	defer w.Close() //nolint:errcheck
 
 	for _, file := range filenames {
-		err := addFileToZip(file, w)
-		if err != nil {
+		if err := addFileToZip(file, w); err != nil {
 			return nil, err
 		}
 	}
@@ -195,12 +225,9 @@ func addFileToZip(filename string, writer *zip.Writer) error {
 		return err
 	}
 
-	_, err = io.Copy(fileWriter, fileReader)
-	if err != nil {
+	if _, err := io.Copy(fileWriter, fileReader); err != nil {
 		return err
 	}
 
-	err = fileReader.Close()
-
-	return err
+	return fileReader.Close()
 }

internal/bridge/configure.go

@@ -13,58 +13,63 @@
 // GNU General Public License for more details.
 //
 // You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
 
 package bridge
 
 import (
 	"strings"
 
-	"github.com/ProtonMail/proton-bridge/v2/internal/clientconfig"
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/settings"
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/useragent"
+	"github.com/ProtonMail/proton-bridge/v3/internal/clientconfig"
+	"github.com/ProtonMail/proton-bridge/v3/internal/constants"
+	"github.com/ProtonMail/proton-bridge/v3/internal/logging"
+	"github.com/ProtonMail/proton-bridge/v3/internal/safe"
+	"github.com/ProtonMail/proton-bridge/v3/internal/useragent"
+	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
+	"github.com/sirupsen/logrus"
 )
 
-func (b *Bridge) ConfigureAppleMail(userID, address string) (bool, error) {
-	user, err := b.GetUser(userID)
-	if err != nil {
-		return false, err
-	}
+// ConfigureAppleMail configures apple mail for the given userID and address.
+// If configuring apple mail for Catalina or newer, it ensures Bridge is using SSL.
+func (bridge *Bridge) ConfigureAppleMail(userID, address string) error {
+	logrus.WithFields(logrus.Fields{
+		"userID":  userID,
+		"address": logging.Sensitive(address),
+	}).Info("Configuring Apple Mail")
 
-	if address == "" {
-		address = user.GetPrimaryAddress()
-	}
+	return safe.RLockRet(func() error {
+		user, ok := bridge.users[userID]
+		if !ok {
+			return ErrNoSuchUser
+		}
 
-	username := address
-	addresses := address
+		if address == "" {
+			address = user.Emails()[0]
+		}
 
-	if user.IsCombinedAddressMode() {
-		username = user.GetPrimaryAddress()
-		addresses = strings.Join(user.GetAddresses(), ",")
-	}
+		username := address
+		addresses := address
 
-	var (
-		restart = false
-		smtpSSL = b.settings.GetBool(settings.SMTPSSLKey)
-	)
+		if user.GetAddressMode() == vault.CombinedMode {
+			username = user.Emails()[0]
+			addresses = strings.Join(user.Emails(), ",")
+		}
 
-	// If configuring apple mail for Catalina or newer, users should use SSL.
-	if useragent.IsCatalinaOrNewer() && !smtpSSL {
-		smtpSSL = true
-		restart = true
-		b.settings.SetBool(settings.SMTPSSLKey, true)
-	}
+		if useragent.IsCatalinaOrNewer() && !bridge.vault.GetSMTPSSL() {
+			if err := bridge.SetSMTPSSL(true); err != nil {
+				return err
+			}
+		}
 
-	if err := (&clientconfig.AppleMail{}).Configure(
-		Host,
-		b.settings.GetInt(settings.IMAPPortKey),
-		b.settings.GetInt(settings.SMTPPortKey),
-		false, smtpSSL,
-		username, addresses,
-		user.GetBridgePassword(),
-	); err != nil {
-		return false, err
-	}
-
-	return restart, nil
+		return (&clientconfig.AppleMail{}).Configure(
+			constants.Host,
+			bridge.vault.GetIMAPPort(),
+			bridge.vault.GetSMTPPort(),
+			bridge.vault.GetIMAPSSL(),
+			bridge.vault.GetSMTPSSL(),
+			username,
+			addresses,
+			user.BridgePass(),
+		)
+	}, bridge.usersLock)
 }

internal/bridge/errors.go

@@ -13,26 +13,24 @@
 // GNU General Public License for more details.
 //
 // You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
 
-// Package bridge provides core functionality of Bridge app.
 package bridge
 
-import "github.com/ProtonMail/proton-bridge/v2/internal/config/settings"
+import "errors"
 
-// IsAutostartEnabled checks if link file exits.
-func (b *Bridge) IsAutostartEnabled() bool {
-	return b.autostart.IsEnabled()
-}
+var (
+	ErrVaultInsecure = errors.New("the vault is insecure")
+	ErrVaultCorrupt  = errors.New("the vault is corrupt")
 
-// EnableAutostart creates link and sets the preferences.
-func (b *Bridge) EnableAutostart() error {
-	b.settings.SetBool(settings.AutostartKey, true)
-	return b.autostart.Enable()
-}
+	ErrServeIMAP    = errors.New("failed to serve IMAP")
+	ErrServeSMTP    = errors.New("failed to serve SMTP")
+	ErrWatchUpdates = errors.New("failed to watch for updates")
 
-// DisableAutostart removes link and sets the preferences.
-func (b *Bridge) DisableAutostart() error {
-	b.settings.SetBool(settings.AutostartKey, false)
-	return b.autostart.Disable()
-}
+	ErrNoSuchUser          = errors.New("no such user")
+	ErrUserAlreadyExists   = errors.New("user already exists")
+	ErrUserAlreadyLoggedIn = errors.New("the user is already logged in")
+	ErrNotImplemented      = errors.New("not implemented")
+
+	ErrSizeTooLarge = errors.New("file is too big")
+)

internal/bridge/files.go

@@ -0,0 +1,64 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge
+
+import (
+	"os"
+	"path/filepath"
+)
+
+func moveDir(from, to string) error {
+	entries, err := os.ReadDir(from)
+	if err != nil {
+		return err
+	}
+
+	for _, entry := range entries {
+		if entry.IsDir() {
+			if err := os.Mkdir(filepath.Join(to, entry.Name()), 0o700); err != nil {
+				return err
+			}
+
+			if err := moveDir(filepath.Join(from, entry.Name()), filepath.Join(to, entry.Name())); err != nil {
+				return err
+			}
+
+			if err := os.RemoveAll(filepath.Join(from, entry.Name())); err != nil {
+				return err
+			}
+		} else {
+			if err := moveFile(filepath.Join(from, entry.Name()), filepath.Join(to, entry.Name())); err != nil {
+				return err
+			}
+		}
+	}
+
+	return os.Remove(from)
+}
+
+func moveFile(from, to string) error {
+	if err := os.MkdirAll(filepath.Dir(to), 0o700); err != nil {
+		return err
+	}
+
+	if err := os.Rename(from, to); err != nil {
+		return err
+	}
+
+	return nil
+}

internal/bridge/files_test.go

@@ -0,0 +1,73 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestMoveDir(t *testing.T) {
+	from, to := t.TempDir(), t.TempDir()
+
+	// Create some files in from.
+	if err := os.WriteFile(filepath.Join(from, "a"), []byte("a"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(from, "b"), []byte("b"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Mkdir(filepath.Join(from, "c"), 0o700); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(from, "c", "d"), []byte("d"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+
+	// Move the files.
+	if err := moveDir(from, to); err != nil {
+		t.Fatal(err)
+	}
+
+	// Check that the files were moved.
+	if _, err := os.Stat(filepath.Join(from, "a")); !os.IsNotExist(err) {
+		t.Fatal(err)
+	}
+	if _, err := os.Stat(filepath.Join(to, "a")); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := os.Stat(filepath.Join(from, "b")); !os.IsNotExist(err) {
+		t.Fatal(err)
+	}
+	if _, err := os.Stat(filepath.Join(to, "b")); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := os.Stat(filepath.Join(from, "c")); !os.IsNotExist(err) {
+		t.Fatal(err)
+	}
+	if _, err := os.Stat(filepath.Join(to, "c")); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := os.Stat(filepath.Join(from, "c", "d")); !os.IsNotExist(err) {
+		t.Fatal(err)
+	}
+	if _, err := os.Stat(filepath.Join(to, "c", "d")); err != nil {
+		t.Fatal(err)
+	}
+}

internal/bridge/identifier.go

@@ -13,15 +13,14 @@
 // GNU General Public License for more details.
 //
 // You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
 
-package message
+package bridge
 
-import (
-	"github.com/ProtonMail/go-rfc5322"
-	pmmime "github.com/ProtonMail/proton-bridge/v2/pkg/mime"
-)
-
-func init() { //nolint:gochecknoinits
-	rfc5322.CharsetReader = pmmime.CharsetReader
+func (bridge *Bridge) GetCurrentUserAgent() string {
+	return bridge.identifier.GetUserAgent()
+}
+
+func (bridge *Bridge) SetCurrentPlatform(platform string) {
+	bridge.identifier.SetPlatform(platform)
 }

internal/bridge/imap.go

@@ -0,0 +1,331 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"io"
+	"io/fs"
+	"os"
+	"path/filepath"
+	"runtime"
+
+	"github.com/Masterminds/semver/v3"
+	"github.com/ProtonMail/gluon"
+	imapEvents "github.com/ProtonMail/gluon/events"
+	"github.com/ProtonMail/gluon/reporter"
+	"github.com/ProtonMail/gluon/store"
+	"github.com/ProtonMail/proton-bridge/v3/internal/async"
+	"github.com/ProtonMail/proton-bridge/v3/internal/constants"
+	"github.com/ProtonMail/proton-bridge/v3/internal/logging"
+	"github.com/ProtonMail/proton-bridge/v3/internal/user"
+	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
+	"github.com/sirupsen/logrus"
+)
+
+const (
+	defaultClientName    = "UnknownClient"
+	defaultClientVersion = "0.0.1"
+)
+
+func (bridge *Bridge) serveIMAP() error {
+	if bridge.imapServer == nil {
+		return fmt.Errorf("no imap server instance running")
+	}
+
+	logrus.Info("Starting IMAP server")
+
+	imapListener, err := newListener(bridge.vault.GetIMAPPort(), bridge.vault.GetIMAPSSL(), bridge.tlsConfig)
+	if err != nil {
+		return fmt.Errorf("failed to create IMAP listener: %w", err)
+	}
+
+	bridge.imapListener = imapListener
+
+	if err := bridge.imapServer.Serve(context.Background(), bridge.imapListener); err != nil {
+		return fmt.Errorf("failed to serve IMAP: %w", err)
+	}
+
+	if err := bridge.vault.SetIMAPPort(getPort(imapListener.Addr())); err != nil {
+		return fmt.Errorf("failed to set IMAP port: %w", err)
+	}
+
+	return nil
+}
+
+func (bridge *Bridge) restartIMAP() error {
+	logrus.Info("Restarting IMAP server")
+
+	if bridge.imapListener != nil {
+		if err := bridge.imapListener.Close(); err != nil {
+			return fmt.Errorf("failed to close IMAP listener: %w", err)
+		}
+	}
+
+	return bridge.serveIMAP()
+}
+
+func (bridge *Bridge) closeIMAP(ctx context.Context) error {
+	logrus.Info("Closing IMAP server")
+
+	if bridge.imapServer != nil {
+		if err := bridge.imapServer.Close(ctx); err != nil {
+			return fmt.Errorf("failed to close IMAP server: %w", err)
+		}
+		bridge.imapServer = nil
+	}
+
+	if bridge.imapListener != nil {
+		if err := bridge.imapListener.Close(); err != nil {
+			return fmt.Errorf("failed to close IMAP listener: %w", err)
+		}
+	}
+
+	return nil
+}
+
+// addIMAPUser connects the given user to gluon.
+func (bridge *Bridge) addIMAPUser(ctx context.Context, user *user.User) error {
+	if bridge.imapServer == nil {
+		return fmt.Errorf("no imap server instance running")
+	}
+
+	imapConn, err := user.NewIMAPConnectors()
+	if err != nil {
+		return fmt.Errorf("failed to create IMAP connectors: %w", err)
+	}
+
+	for addrID, imapConn := range imapConn {
+		log := logrus.WithFields(logrus.Fields{
+			"userID": user.ID(),
+			"addrID": addrID,
+		})
+
+		if gluonID, ok := user.GetGluonID(addrID); ok {
+			log.WithField("gluonID", gluonID).Info("Loading existing IMAP user")
+
+			if err := bridge.imapServer.LoadUser(ctx, imapConn, gluonID, user.GluonKey()); err != nil {
+				return fmt.Errorf("failed to load IMAP user: %w", err)
+			}
+		} else {
+			log.Info("Creating new IMAP user")
+
+			gluonID, err := bridge.imapServer.AddUser(ctx, imapConn, user.GluonKey())
+			if err != nil {
+				return fmt.Errorf("failed to add IMAP user: %w", err)
+			}
+
+			if err := user.SetGluonID(addrID, gluonID); err != nil {
+				return fmt.Errorf("failed to set IMAP user ID: %w", err)
+			}
+
+			log.WithField("gluonID", gluonID).Info("Created new IMAP user")
+		}
+	}
+
+	return nil
+}
+
+// removeIMAPUser disconnects the given user from gluon, optionally also removing its files.
+func (bridge *Bridge) removeIMAPUser(ctx context.Context, user *user.User, withData bool) error {
+	if bridge.imapServer == nil {
+		return fmt.Errorf("no imap server instance running")
+	}
+	logrus.WithFields(logrus.Fields{
+		"userID":   user.ID(),
+		"withData": withData,
+	}).Debug("Removing IMAP user")
+
+	for addrID, gluonID := range user.GetGluonIDs() {
+		if err := bridge.imapServer.RemoveUser(ctx, gluonID, withData); err != nil {
+			return fmt.Errorf("failed to remove IMAP user: %w", err)
+		}
+
+		if withData {
+			if err := user.RemoveGluonID(addrID, gluonID); err != nil {
+				return fmt.Errorf("failed to remove IMAP user ID: %w", err)
+			}
+		}
+	}
+
+	return nil
+}
+
+func (bridge *Bridge) handleIMAPEvent(event imapEvents.Event) {
+	switch event := event.(type) {
+	case imapEvents.UserAdded:
+		for labelID, count := range event.Counts {
+			logrus.WithFields(logrus.Fields{
+				"gluonID": event.UserID,
+				"labelID": labelID,
+				"count":   count,
+			}).Info("Received mailbox message count")
+		}
+
+	case imapEvents.SessionAdded:
+		if !bridge.identifier.HasClient() {
+			bridge.identifier.SetClient(defaultClientName, defaultClientVersion)
+		}
+
+	case imapEvents.IMAPID:
+		logrus.WithFields(logrus.Fields{
+			"sessionID": event.SessionID,
+			"name":      event.IMAPID.Name,
+			"version":   event.IMAPID.Version,
+		}).Info("Received IMAP ID")
+
+		if event.IMAPID.Name != "" && event.IMAPID.Version != "" {
+			bridge.identifier.SetClient(event.IMAPID.Name, event.IMAPID.Version)
+		}
+	}
+}
+
+func getGluonDir(encVault *vault.Vault) (string, error) {
+	empty, exists, err := isEmpty(encVault.GetGluonDir())
+	if err != nil {
+		return "", fmt.Errorf("failed to check if gluon dir is empty: %w", err)
+	}
+
+	if !exists {
+		if err := os.MkdirAll(encVault.GetGluonDir(), 0o700); err != nil {
+			return "", fmt.Errorf("failed to create gluon dir: %w", err)
+		}
+	}
+
+	if empty {
+		if err := encVault.ForUser(runtime.NumCPU(), func(user *vault.User) error {
+			return user.ClearSyncStatus()
+		}); err != nil {
+			return "", fmt.Errorf("failed to reset user sync status: %w", err)
+		}
+	}
+
+	return encVault.GetGluonDir(), nil
+}
+
+// nolint:funlen
+func newIMAPServer(
+	gluonDir string,
+	version *semver.Version,
+	tlsConfig *tls.Config,
+	reporter reporter.Reporter,
+	logClient, logServer bool,
+	eventCh chan<- imapEvents.Event,
+	tasks *async.Group,
+) (*gluon.Server, error) {
+	logrus.WithFields(logrus.Fields{
+		"gluonDir":  gluonDir,
+		"version":   version,
+		"logClient": logClient,
+		"logServer": logServer,
+	}).Info("Creating IMAP server")
+
+	if logClient || logServer {
+		log := logrus.WithField("protocol", "IMAP")
+		log.Warning("================================================")
+		log.Warning("THIS LOG WILL CONTAIN **DECRYPTED** MESSAGE DATA")
+		log.Warning("================================================")
+	}
+
+	var imapClientLog io.Writer
+
+	if logClient {
+		imapClientLog = logging.NewIMAPLogger()
+	} else {
+		imapClientLog = io.Discard
+	}
+
+	var imapServerLog io.Writer
+
+	if logServer {
+		imapServerLog = logging.NewIMAPLogger()
+	} else {
+		imapServerLog = io.Discard
+	}
+
+	imapServer, err := gluon.New(
+		gluon.WithTLS(tlsConfig),
+		gluon.WithDataDir(gluonDir),
+		gluon.WithStoreBuilder(new(storeBuilder)),
+		gluon.WithLogger(imapClientLog, imapServerLog),
+		getGluonVersionInfo(version),
+		gluon.WithReporter(reporter),
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	tasks.Once(func(ctx context.Context) {
+		async.ForwardContext(ctx, eventCh, imapServer.AddWatcher())
+	})
+
+	tasks.Once(func(ctx context.Context) {
+		async.RangeContext(ctx, imapServer.GetErrorCh(), func(err error) {
+			logrus.WithError(err).Error("IMAP server error")
+		})
+	})
+
+	return imapServer, nil
+}
+
+func getGluonVersionInfo(version *semver.Version) gluon.Option {
+	return gluon.WithVersionInfo(
+		int(version.Major()),
+		int(version.Minor()),
+		int(version.Patch()),
+		constants.FullAppName,
+		"TODO",
+		"TODO",
+	)
+}
+
+// isEmpty returns whether the given directory is empty.
+// If the directory does not exist, the second return value is false.
+func isEmpty(dir string) (bool, bool, error) {
+	if _, err := os.Stat(dir); err != nil {
+		if !errors.Is(err, fs.ErrNotExist) {
+			return false, false, fmt.Errorf("failed to stat %s: %w", dir, err)
+		}
+
+		return true, false, nil
+	}
+
+	entries, err := os.ReadDir(dir)
+	if err != nil {
+		return false, false, fmt.Errorf("failed to read dir %s: %w", dir, err)
+	}
+
+	return len(entries) == 0, true, nil
+}
+
+type storeBuilder struct{}
+
+func (*storeBuilder) New(path, userID string, passphrase []byte) (store.Store, error) {
+	return store.NewOnDiskStore(
+		filepath.Join(path, userID),
+		passphrase,
+		store.WithCompressor(new(store.GZipCompressor)),
+	)
+}
+
+func (*storeBuilder) Delete(path, userID string) error {
+	return os.RemoveAll(filepath.Join(path, userID))
+}

internal/bridge/locations.go

@@ -17,14 +17,14 @@
 
 package bridge
 
-func (b *Bridge) ProvideLogsPath() (string, error) {
-	return b.locations.ProvideLogsPath()
+func (bridge *Bridge) GetLogsPath() (string, error) {
+	return bridge.locator.ProvideLogsPath()
 }
 
-func (b *Bridge) GetLicenseFilePath() string {
-	return b.locations.GetLicenseFilePath()
+func (bridge *Bridge) GetLicenseFilePath() string {
+	return bridge.locator.GetLicenseFilePath()
 }
 
-func (b *Bridge) GetDependencyLicensesLink() string {
-	return b.locations.GetDependencyLicensesLink()
+func (bridge *Bridge) GetDependencyLicensesLink() string {
+	return bridge.locator.GetDependencyLicensesLink()
 }

internal/bridge/main_test.go

@@ -13,22 +13,24 @@
 // GNU General Public License for more details.
 //
 // You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
 
-package store
+package bridge_test
 
 import (
 	"os"
+	"testing"
 
 	"github.com/sirupsen/logrus"
+	"go.uber.org/goleak"
 )
 
-func init() { //nolint:gochecknoinits
-	logrus.SetLevel(logrus.ErrorLevel)
-	switch os.Getenv("VERBOSITY") {
-	case "trace":
-		logrus.SetLevel(logrus.TraceLevel)
-	case "debug":
-		logrus.SetLevel(logrus.DebugLevel)
+func TestMain(m *testing.M) {
+	if level := os.Getenv("BRIDGE_LOG_LEVEL"); level != "" {
+		if parsed, err := logrus.ParseLevel(level); err == nil {
+			logrus.SetLevel(parsed)
+		}
 	}
+
+	goleak.VerifyTestMain(m, goleak.IgnoreCurrent())
 }

internal/bridge/mocks.go

@@ -0,0 +1,151 @@
+package bridge
+
+import (
+	"context"
+	"net/http"
+	"net/url"
+	"os"
+	"sync"
+	"testing"
+
+	"github.com/Masterminds/semver/v3"
+	"github.com/ProtonMail/proton-bridge/v3/internal/bridge/mocks"
+	"github.com/ProtonMail/proton-bridge/v3/internal/updater"
+	"github.com/golang/mock/gomock"
+)
+
+type Mocks struct {
+	ProxyCtl    *mocks.MockProxyController
+	TLSReporter *mocks.MockTLSReporter
+	TLSIssueCh  chan struct{}
+
+	Updater     *TestUpdater
+	Autostarter *mocks.MockAutostarter
+
+	CrashHandler *mocks.MockPanicHandler
+	Reporter     *mocks.MockReporter
+}
+
+func NewMocks(tb testing.TB, version, minAuto *semver.Version) *Mocks {
+	ctl := gomock.NewController(tb)
+
+	mocks := &Mocks{
+		ProxyCtl:    mocks.NewMockProxyController(ctl),
+		TLSReporter: mocks.NewMockTLSReporter(ctl),
+		TLSIssueCh:  make(chan struct{}),
+
+		Updater:     NewTestUpdater(version, minAuto),
+		Autostarter: mocks.NewMockAutostarter(ctl),
+
+		CrashHandler: mocks.NewMockPanicHandler(ctl),
+		Reporter:     mocks.NewMockReporter(ctl),
+	}
+
+	// When getting the TLS issue channel, we want to return the test channel.
+	mocks.TLSReporter.EXPECT().GetTLSIssueCh().Return(mocks.TLSIssueCh).AnyTimes()
+
+	// This is called at he end of any go-routine:
+	mocks.CrashHandler.EXPECT().HandlePanic().AnyTimes()
+
+	return mocks
+}
+
+func (mocks *Mocks) Close() {
+	close(mocks.TLSIssueCh)
+}
+
+type TestCookieJar struct {
+	cookies map[string][]*http.Cookie
+}
+
+func NewTestCookieJar() *TestCookieJar {
+	return &TestCookieJar{
+		cookies: make(map[string][]*http.Cookie),
+	}
+}
+
+func (j *TestCookieJar) SetCookies(u *url.URL, cookies []*http.Cookie) {
+	j.cookies[u.Host] = cookies
+}
+
+func (j *TestCookieJar) Cookies(u *url.URL) []*http.Cookie {
+	return j.cookies[u.Host]
+}
+
+type TestLocationsProvider struct {
+	config, data, cache string
+}
+
+func NewTestLocationsProvider(dir string) *TestLocationsProvider {
+	config, err := os.MkdirTemp(dir, "config")
+	if err != nil {
+		panic(err)
+	}
+
+	data, err := os.MkdirTemp(dir, "data")
+	if err != nil {
+		panic(err)
+	}
+
+	cache, err := os.MkdirTemp(dir, "cache")
+	if err != nil {
+		panic(err)
+	}
+
+	return &TestLocationsProvider{
+		config: config,
+		data:   data,
+		cache:  cache,
+	}
+}
+
+func (provider *TestLocationsProvider) UserConfig() string {
+	return provider.config
+}
+
+func (provider *TestLocationsProvider) UserData() string {
+	return provider.data
+}
+
+func (provider *TestLocationsProvider) UserCache() string {
+	return provider.cache
+}
+
+type TestUpdater struct {
+	latest updater.VersionInfo
+	lock   sync.RWMutex
+}
+
+func NewTestUpdater(version, minAuto *semver.Version) *TestUpdater {
+	return &TestUpdater{
+		latest: updater.VersionInfo{
+			Version: version,
+			MinAuto: minAuto,
+
+			RolloutProportion: 1.0,
+		},
+	}
+}
+
+func (testUpdater *TestUpdater) SetLatestVersion(version, minAuto *semver.Version) {
+	testUpdater.lock.Lock()
+	defer testUpdater.lock.Unlock()
+
+	testUpdater.latest = updater.VersionInfo{
+		Version: version,
+		MinAuto: minAuto,
+
+		RolloutProportion: 1.0,
+	}
+}
+
+func (testUpdater *TestUpdater) GetVersionInfo(ctx context.Context, downloader updater.Downloader, channel updater.Channel) (updater.VersionInfo, error) {
+	testUpdater.lock.RLock()
+	defer testUpdater.lock.RUnlock()
+
+	return testUpdater.latest, nil
+}
+
+func (testUpdater *TestUpdater) InstallUpdate(ctx context.Context, downloader updater.Downloader, update updater.VersionInfo) error {
+	return nil
+}

internal/bridge/mocks/async_mocks.go

@@ -0,0 +1,46 @@
+// Code generated by MockGen. DO NOT EDIT.
+// Source: github.com/ProtonMail/proton-bridge/v3/internal/async (interfaces: PanicHandler)
+
+// Package mocks is a generated GoMock package.
+package mocks
+
+import (
+	reflect "reflect"
+
+	gomock "github.com/golang/mock/gomock"
+)
+
+// MockPanicHandler is a mock of PanicHandler interface.
+type MockPanicHandler struct {
+	ctrl     *gomock.Controller
+	recorder *MockPanicHandlerMockRecorder
+}
+
+// MockPanicHandlerMockRecorder is the mock recorder for MockPanicHandler.
+type MockPanicHandlerMockRecorder struct {
+	mock *MockPanicHandler
+}
+
+// NewMockPanicHandler creates a new mock instance.
+func NewMockPanicHandler(ctrl *gomock.Controller) *MockPanicHandler {
+	mock := &MockPanicHandler{ctrl: ctrl}
+	mock.recorder = &MockPanicHandlerMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use.
+func (m *MockPanicHandler) EXPECT() *MockPanicHandlerMockRecorder {
+	return m.recorder
+}
+
+// HandlePanic mocks base method.
+func (m *MockPanicHandler) HandlePanic() {
+	m.ctrl.T.Helper()
+	m.ctrl.Call(m, "HandlePanic")
+}
+
+// HandlePanic indicates an expected call of HandlePanic.
+func (mr *MockPanicHandlerMockRecorder) HandlePanic() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "HandlePanic", reflect.TypeOf((*MockPanicHandler)(nil).HandlePanic))
+}

internal/bridge/mocks/gluon_mocks.go

@@ -0,0 +1,90 @@
+// Code generated by MockGen. DO NOT EDIT.
+// Source: github.com/ProtonMail/gluon/reporter (interfaces: Reporter)
+
+// Package mocks is a generated GoMock package.
+package mocks
+
+import (
+	reflect "reflect"
+
+	gomock "github.com/golang/mock/gomock"
+)
+
+// MockReporter is a mock of Reporter interface.
+type MockReporter struct {
+	ctrl     *gomock.Controller
+	recorder *MockReporterMockRecorder
+}
+
+// MockReporterMockRecorder is the mock recorder for MockReporter.
+type MockReporterMockRecorder struct {
+	mock *MockReporter
+}
+
+// NewMockReporter creates a new mock instance.
+func NewMockReporter(ctrl *gomock.Controller) *MockReporter {
+	mock := &MockReporter{ctrl: ctrl}
+	mock.recorder = &MockReporterMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use.
+func (m *MockReporter) EXPECT() *MockReporterMockRecorder {
+	return m.recorder
+}
+
+// ReportException mocks base method.
+func (m *MockReporter) ReportException(arg0 interface{}) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "ReportException", arg0)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// ReportException indicates an expected call of ReportException.
+func (mr *MockReporterMockRecorder) ReportException(arg0 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "ReportException", reflect.TypeOf((*MockReporter)(nil).ReportException), arg0)
+}
+
+// ReportExceptionWithContext mocks base method.
+func (m *MockReporter) ReportExceptionWithContext(arg0 interface{}, arg1 map[string]interface{}) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "ReportExceptionWithContext", arg0, arg1)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// ReportExceptionWithContext indicates an expected call of ReportExceptionWithContext.
+func (mr *MockReporterMockRecorder) ReportExceptionWithContext(arg0, arg1 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "ReportExceptionWithContext", reflect.TypeOf((*MockReporter)(nil).ReportExceptionWithContext), arg0, arg1)
+}
+
+// ReportMessage mocks base method.
+func (m *MockReporter) ReportMessage(arg0 string) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "ReportMessage", arg0)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// ReportMessage indicates an expected call of ReportMessage.
+func (mr *MockReporterMockRecorder) ReportMessage(arg0 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "ReportMessage", reflect.TypeOf((*MockReporter)(nil).ReportMessage), arg0)
+}
+
+// ReportMessageWithContext mocks base method.
+func (m *MockReporter) ReportMessageWithContext(arg0 string, arg1 map[string]interface{}) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "ReportMessageWithContext", arg0, arg1)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// ReportMessageWithContext indicates an expected call of ReportMessageWithContext.
+func (mr *MockReporterMockRecorder) ReportMessageWithContext(arg0, arg1 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "ReportMessageWithContext", reflect.TypeOf((*MockReporter)(nil).ReportMessageWithContext), arg0, arg1)
+}

internal/bridge/mocks/matcher.go

@@ -0,0 +1,108 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package mocks
+
+import (
+	"strings"
+
+	"github.com/ProtonMail/go-proton-api"
+)
+
+type refreshContextMatcher struct {
+	wantRefresh proton.RefreshFlag
+}
+
+func NewRefreshContextMatcher(refreshFlag proton.RefreshFlag) *refreshContextMatcher { //nolint:revive
+	return &refreshContextMatcher{wantRefresh: refreshFlag}
+}
+
+func (m *refreshContextMatcher) Matches(x interface{}) bool {
+	context, ok := x.(map[string]interface{})
+	if !ok {
+		return false
+	}
+
+	i, ok := context["EventLoop"]
+	if !ok {
+		return false
+	}
+
+	el, ok := i.(map[string]interface{})
+	if !ok {
+		return false
+	}
+
+	vID, ok := el["EventID"]
+	if !ok {
+		return false
+	}
+
+	id, ok := vID.(string)
+	if !ok {
+		return false
+	}
+
+	if id == "" {
+		return false
+	}
+
+	vRefresh, ok := el["Refresh"]
+	if !ok {
+		return false
+	}
+
+	refresh, ok := vRefresh.(proton.RefreshFlag)
+	if !ok {
+		return false
+	}
+
+	return refresh == m.wantRefresh
+}
+
+func (m *refreshContextMatcher) String() string {
+	return `map[string]interface which contains "Refresh" field with value proton.RefreshAll`
+}
+
+type closedConnectionMatcher struct{}
+
+func NewClosedConnectionMatcher() *closedConnectionMatcher { //nolint:revive
+	return &closedConnectionMatcher{}
+}
+
+func (m *closedConnectionMatcher) Matches(x interface{}) bool {
+	context, ok := x.(map[string]interface{})
+	if !ok {
+		return false
+	}
+
+	vErr, ok := context["error"]
+	if !ok {
+		return false
+	}
+
+	err, ok := vErr.(error)
+	if !ok {
+		return false
+	}
+
+	return strings.Contains(err.Error(), "used of closed network connection")
+}
+
+func (m *closedConnectionMatcher) String() string {
+	return "map containing error of closed network connection"
+}

internal/bridge/mocks/mocks.go

@@ -0,0 +1,146 @@
+// Code generated by MockGen. DO NOT EDIT.
+// Source: github.com/ProtonMail/proton-bridge/v3/internal/bridge (interfaces: TLSReporter,ProxyController,Autostarter)
+
+// Package mocks is a generated GoMock package.
+package mocks
+
+import (
+	reflect "reflect"
+
+	gomock "github.com/golang/mock/gomock"
+)
+
+// MockTLSReporter is a mock of TLSReporter interface.
+type MockTLSReporter struct {
+	ctrl     *gomock.Controller
+	recorder *MockTLSReporterMockRecorder
+}
+
+// MockTLSReporterMockRecorder is the mock recorder for MockTLSReporter.
+type MockTLSReporterMockRecorder struct {
+	mock *MockTLSReporter
+}
+
+// NewMockTLSReporter creates a new mock instance.
+func NewMockTLSReporter(ctrl *gomock.Controller) *MockTLSReporter {
+	mock := &MockTLSReporter{ctrl: ctrl}
+	mock.recorder = &MockTLSReporterMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use.
+func (m *MockTLSReporter) EXPECT() *MockTLSReporterMockRecorder {
+	return m.recorder
+}
+
+// GetTLSIssueCh mocks base method.
+func (m *MockTLSReporter) GetTLSIssueCh() <-chan struct{} {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "GetTLSIssueCh")
+	ret0, _ := ret[0].(<-chan struct{})
+	return ret0
+}
+
+// GetTLSIssueCh indicates an expected call of GetTLSIssueCh.
+func (mr *MockTLSReporterMockRecorder) GetTLSIssueCh() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetTLSIssueCh", reflect.TypeOf((*MockTLSReporter)(nil).GetTLSIssueCh))
+}
+
+// MockProxyController is a mock of ProxyController interface.
+type MockProxyController struct {
+	ctrl     *gomock.Controller
+	recorder *MockProxyControllerMockRecorder
+}
+
+// MockProxyControllerMockRecorder is the mock recorder for MockProxyController.
+type MockProxyControllerMockRecorder struct {
+	mock *MockProxyController
+}
+
+// NewMockProxyController creates a new mock instance.
+func NewMockProxyController(ctrl *gomock.Controller) *MockProxyController {
+	mock := &MockProxyController{ctrl: ctrl}
+	mock.recorder = &MockProxyControllerMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use.
+func (m *MockProxyController) EXPECT() *MockProxyControllerMockRecorder {
+	return m.recorder
+}
+
+// AllowProxy mocks base method.
+func (m *MockProxyController) AllowProxy() {
+	m.ctrl.T.Helper()
+	m.ctrl.Call(m, "AllowProxy")
+}
+
+// AllowProxy indicates an expected call of AllowProxy.
+func (mr *MockProxyControllerMockRecorder) AllowProxy() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "AllowProxy", reflect.TypeOf((*MockProxyController)(nil).AllowProxy))
+}
+
+// DisallowProxy mocks base method.
+func (m *MockProxyController) DisallowProxy() {
+	m.ctrl.T.Helper()
+	m.ctrl.Call(m, "DisallowProxy")
+}
+
+// DisallowProxy indicates an expected call of DisallowProxy.
+func (mr *MockProxyControllerMockRecorder) DisallowProxy() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "DisallowProxy", reflect.TypeOf((*MockProxyController)(nil).DisallowProxy))
+}
+
+// MockAutostarter is a mock of Autostarter interface.
+type MockAutostarter struct {
+	ctrl     *gomock.Controller
+	recorder *MockAutostarterMockRecorder
+}
+
+// MockAutostarterMockRecorder is the mock recorder for MockAutostarter.
+type MockAutostarterMockRecorder struct {
+	mock *MockAutostarter
+}
+
+// NewMockAutostarter creates a new mock instance.
+func NewMockAutostarter(ctrl *gomock.Controller) *MockAutostarter {
+	mock := &MockAutostarter{ctrl: ctrl}
+	mock.recorder = &MockAutostarterMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use.
+func (m *MockAutostarter) EXPECT() *MockAutostarterMockRecorder {
+	return m.recorder
+}
+
+// Disable mocks base method.
+func (m *MockAutostarter) Disable() error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "Disable")
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// Disable indicates an expected call of Disable.
+func (mr *MockAutostarterMockRecorder) Disable() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Disable", reflect.TypeOf((*MockAutostarter)(nil).Disable))
+}
+
+// Enable mocks base method.
+func (m *MockAutostarter) Enable() error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "Enable")
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// Enable indicates an expected call of Enable.
+func (mr *MockAutostarterMockRecorder) Enable() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Enable", reflect.TypeOf((*MockAutostarter)(nil).Enable))
+}

internal/bridge/refresh_test.go

@@ -0,0 +1,113 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge_test
+
+import (
+	"context"
+	"fmt"
+	"testing"
+
+	"github.com/ProtonMail/go-proton-api"
+	"github.com/ProtonMail/go-proton-api/server"
+	"github.com/ProtonMail/proton-bridge/v3/internal/bridge"
+	"github.com/ProtonMail/proton-bridge/v3/internal/constants"
+	"github.com/ProtonMail/proton-bridge/v3/internal/events"
+	"github.com/bradenaw/juniper/iterator"
+	"github.com/emersion/go-imap/client"
+	"github.com/golang/mock/gomock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestBridge_Refresh(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		userID, _, err := s.CreateUser("imap", "imap@pm.me", password)
+		require.NoError(t, err)
+
+		names := iterator.Collect(iterator.Map(iterator.Counter(10), func(i int) string {
+			return fmt.Sprintf("folder%v", i)
+		}))
+
+		for _, name := range names {
+			must(s.CreateLabel(userID, name, "", proton.LabelTypeFolder))
+		}
+
+		// The initial user should be fully synced.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(b *bridge.Bridge, _ *bridge.Mocks) {
+			syncCh, done := chToType[events.Event, events.SyncFinished](b.GetEvents(events.SyncFinished{}))
+			defer done()
+
+			userID, err := b.LoginFull(ctx, "imap", password, nil, nil)
+			require.NoError(t, err)
+
+			require.Equal(t, userID, (<-syncCh).UserID)
+		})
+
+		// If we then connect an IMAP client, it should see all the labels with UID validity of 1.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(b *bridge.Bridge, mocks *bridge.Mocks) {
+			mocks.Reporter.EXPECT().ReportMessageWithContext(gomock.Any(), gomock.Any()).AnyTimes()
+
+			info, err := b.GetUserInfo(userID)
+			require.NoError(t, err)
+			require.True(t, info.State == bridge.Connected)
+
+			client, err := client.Dial(fmt.Sprintf("%v:%v", constants.Host, b.GetIMAPPort()))
+			require.NoError(t, err)
+			require.NoError(t, client.Login("imap@pm.me", string(info.BridgePass)))
+			defer func() { _ = client.Logout() }()
+
+			for _, name := range names {
+				status, err := client.Select("Folders/"+name, false)
+				require.NoError(t, err)
+				require.Equal(t, uint32(1000), status.UidValidity)
+			}
+		})
+
+		// Refresh the user; this will force a resync.
+		require.NoError(t, s.RefreshUser(userID, proton.RefreshAll))
+
+		// If we then connect an IMAP client, it should see all the labels with UID validity of 1.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(b *bridge.Bridge, mocks *bridge.Mocks) {
+			mocks.Reporter.EXPECT().ReportMessageWithContext(gomock.Any(), gomock.Any()).AnyTimes()
+
+			syncCh, done := chToType[events.Event, events.SyncFinished](b.GetEvents(events.SyncFinished{}))
+			defer done()
+
+			require.Equal(t, userID, (<-syncCh).UserID)
+		})
+
+		// After resync, the IMAP client should see all the labels with UID validity of 2.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(b *bridge.Bridge, mocks *bridge.Mocks) {
+			mocks.Reporter.EXPECT().ReportMessageWithContext(gomock.Any(), gomock.Any()).AnyTimes()
+
+			info, err := b.GetUserInfo(userID)
+			require.NoError(t, err)
+			require.True(t, info.State == bridge.Connected)
+
+			client, err := client.Dial(fmt.Sprintf("%v:%v", constants.Host, b.GetIMAPPort()))
+			require.NoError(t, err)
+			require.NoError(t, client.Login("imap@pm.me", string(info.BridgePass)))
+			defer func() { _ = client.Logout() }()
+
+			for _, name := range names {
+				status, err := client.Select("Folders/"+name, false)
+				require.NoError(t, err)
+				require.Equal(t, uint32(1001), status.UidValidity)
+			}
+		})
+	})
+}

internal/bridge/send_test.go

@@ -0,0 +1,115 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge_test
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/ProtonMail/go-proton-api"
+	"github.com/ProtonMail/go-proton-api/server"
+	"github.com/ProtonMail/proton-bridge/v3/internal/bridge"
+	"github.com/ProtonMail/proton-bridge/v3/internal/constants"
+	"github.com/emersion/go-imap"
+	"github.com/emersion/go-imap/client"
+	"github.com/emersion/go-sasl"
+	"github.com/emersion/go-smtp"
+	"github.com/stretchr/testify/require"
+)
+
+func TestBridge_Send(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		_, _, err := s.CreateUser("recipient", "recipient@pm.me", password)
+		require.NoError(t, err)
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			senderUserID, err := bridge.LoginFull(ctx, username, password, nil, nil)
+			require.NoError(t, err)
+
+			recipientUserID, err := bridge.LoginFull(ctx, "recipient", password, nil, nil)
+			require.NoError(t, err)
+
+			senderInfo, err := bridge.GetUserInfo(senderUserID)
+			require.NoError(t, err)
+
+			recipientInfo, err := bridge.GetUserInfo(recipientUserID)
+			require.NoError(t, err)
+
+			for i := 0; i < 10; i++ {
+				// Dial the server.
+				client, err := smtp.Dial(net.JoinHostPort(constants.Host, fmt.Sprint(bridge.GetSMTPPort())))
+				require.NoError(t, err)
+				defer client.Close() //nolint:errcheck
+
+				// Upgrade to TLS.
+				require.NoError(t, client.StartTLS(&tls.Config{InsecureSkipVerify: true}))
+
+				if i%2 == 0 {
+					// Authorize with SASL PLAIN.
+					require.NoError(t, client.Auth(sasl.NewPlainClient(
+						senderInfo.Addresses[0],
+						senderInfo.Addresses[0],
+						string(senderInfo.BridgePass)),
+					))
+				} else {
+					// Authorize with SASL LOGIN.
+					require.NoError(t, client.Auth(sasl.NewLoginClient(
+						senderInfo.Addresses[0],
+						string(senderInfo.BridgePass)),
+					))
+				}
+
+				// Send the message.
+				require.NoError(t, client.SendMail(
+					senderInfo.Addresses[0],
+					[]string{recipientInfo.Addresses[0]},
+					strings.NewReader(fmt.Sprintf("Subject: Test %v\r\n\r\nHello world!", i)),
+				))
+			}
+
+			// Connect the sender IMAP client.
+			senderIMAPClient, err := client.Dial(net.JoinHostPort(constants.Host, fmt.Sprint(bridge.GetIMAPPort())))
+			require.NoError(t, err)
+			require.NoError(t, senderIMAPClient.Login(senderInfo.Addresses[0], string(senderInfo.BridgePass)))
+			defer senderIMAPClient.Logout() //nolint:errcheck
+
+			// Connect the recipient IMAP client.
+			recipientIMAPClient, err := client.Dial(net.JoinHostPort(constants.Host, fmt.Sprint(bridge.GetIMAPPort())))
+			require.NoError(t, err)
+			require.NoError(t, recipientIMAPClient.Login(recipientInfo.Addresses[0], string(recipientInfo.BridgePass)))
+			defer recipientIMAPClient.Logout() //nolint:errcheck
+
+			// Sender should have 10 messages in the sent folder.
+			// Recipient should have 0 messages in inbox.
+			require.Eventually(t, func() bool {
+				sent, err := senderIMAPClient.Status(`Sent`, []imap.StatusItem{imap.StatusMessages})
+				require.NoError(t, err)
+
+				inbox, err := recipientIMAPClient.Status(`Inbox`, []imap.StatusItem{imap.StatusMessages})
+				require.NoError(t, err)
+
+				return sent.Messages == 10 && inbox.Messages == 10
+			}, 10*time.Second, 100*time.Millisecond)
+		})
+	})
+}

internal/bridge/sentry_test.go

@@ -0,0 +1,78 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge_test
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"testing"
+
+	"github.com/ProtonMail/gluon/liner"
+	"github.com/ProtonMail/go-proton-api"
+	"github.com/ProtonMail/go-proton-api/server"
+	"github.com/ProtonMail/proton-bridge/v3/internal/bridge"
+	"github.com/ProtonMail/proton-bridge/v3/internal/constants"
+	"github.com/ProtonMail/proton-bridge/v3/internal/events"
+	"github.com/golang/mock/gomock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestBridge_Report(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(b *bridge.Bridge, mocks *bridge.Mocks) {
+			syncCh, done := chToType[events.Event, events.SyncFinished](b.GetEvents(events.SyncFinished{}))
+			defer done()
+
+			// Log in the user.
+			userID, err := b.LoginFull(ctx, username, password, nil, nil)
+			require.NoError(t, err)
+
+			// Wait until the sync has finished.
+			require.Equal(t, userID, (<-syncCh).UserID)
+
+			// Get the IMAP info.
+			info, err := b.GetUserInfo(userID)
+			require.NoError(t, err)
+			require.True(t, info.State == bridge.Connected)
+
+			// Dial the IMAP port.
+			conn, err := net.Dial("tcp", fmt.Sprintf("%v:%v", constants.Host, b.GetIMAPPort()))
+			require.NoError(t, err)
+			defer func() { require.NoError(t, conn.Close()) }()
+
+			// Sending garbage to the IMAP port should cause the bridge to report it.
+			mocks.Reporter.EXPECT().ReportMessageWithContext(
+				gomock.Eq("Failed to parse IMAP command"),
+				gomock.Any(),
+			).Return(nil)
+
+			// Read lines from the IMAP port.
+			lineCh := liner.New(conn).Lines(func() error { return nil })
+
+			// On connection, we should get the greeting.
+			require.Contains(t, string((<-lineCh).Line), "* OK")
+
+			// Send garbage data.
+			must(conn.Write([]byte("tag garbage\r\n")))
+
+			// Bridge will reply with BAD.
+			require.Contains(t, string((<-lineCh).Line), "tag BAD")
+		})
+	})
+}

internal/bridge/settings.go

@@ -13,32 +13,326 @@
 // GNU General Public License for more details.
 //
 // You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
 
 package bridge
 
-import "github.com/ProtonMail/proton-bridge/v2/internal/config/settings"
+import (
+	"context"
+	"fmt"
+	"net"
+	"path/filepath"
 
-func (b *Bridge) Get(key settings.Key) string {
-	return b.settings.Get(key)
+	"github.com/Masterminds/semver/v3"
+	"github.com/ProtonMail/proton-bridge/v3/internal/constants"
+	"github.com/ProtonMail/proton-bridge/v3/internal/safe"
+	"github.com/ProtonMail/proton-bridge/v3/internal/updater"
+	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
+	"github.com/ProtonMail/proton-bridge/v3/pkg/keychain"
+	"github.com/sirupsen/logrus"
+)
+
+func (bridge *Bridge) GetKeychainApp() (string, error) {
+	vaultDir, err := bridge.locator.ProvideSettingsPath()
+	if err != nil {
+		return "", err
+	}
+
+	return vault.GetHelper(vaultDir)
 }
 
-func (b *Bridge) Set(key settings.Key, value string) {
-	b.settings.Set(key, value)
+func (bridge *Bridge) SetKeychainApp(helper string) error {
+	vaultDir, err := bridge.locator.ProvideSettingsPath()
+	if err != nil {
+		return err
+	}
+
+	return vault.SetHelper(vaultDir, helper)
 }
 
-func (b *Bridge) GetBool(key settings.Key) bool {
-	return b.settings.GetBool(key)
+func (bridge *Bridge) GetIMAPPort() int {
+	return bridge.vault.GetIMAPPort()
 }
 
-func (b *Bridge) SetBool(key settings.Key, value bool) {
-	b.settings.SetBool(key, value)
+func (bridge *Bridge) SetIMAPPort(newPort int) error {
+	if newPort == bridge.vault.GetIMAPPort() {
+		return nil
+	}
+
+	if err := bridge.vault.SetIMAPPort(newPort); err != nil {
+		return err
+	}
+
+	return bridge.restartIMAP()
 }
 
-func (b *Bridge) GetInt(key settings.Key) int {
-	return b.settings.GetInt(key)
+func (bridge *Bridge) GetIMAPSSL() bool {
+	return bridge.vault.GetIMAPSSL()
 }
 
-func (b *Bridge) SetInt(key settings.Key, value int) {
-	b.settings.SetInt(key, value)
+func (bridge *Bridge) SetIMAPSSL(newSSL bool) error {
+	if newSSL == bridge.vault.GetIMAPSSL() {
+		return nil
+	}
+
+	if err := bridge.vault.SetIMAPSSL(newSSL); err != nil {
+		return err
+	}
+
+	return bridge.restartIMAP()
+}
+
+func (bridge *Bridge) GetSMTPPort() int {
+	return bridge.vault.GetSMTPPort()
+}
+
+func (bridge *Bridge) SetSMTPPort(newPort int) error {
+	if newPort == bridge.vault.GetSMTPPort() {
+		return nil
+	}
+
+	if err := bridge.vault.SetSMTPPort(newPort); err != nil {
+		return err
+	}
+
+	return bridge.restartSMTP()
+}
+
+func (bridge *Bridge) GetSMTPSSL() bool {
+	return bridge.vault.GetSMTPSSL()
+}
+
+func (bridge *Bridge) SetSMTPSSL(newSSL bool) error {
+	if newSSL == bridge.vault.GetSMTPSSL() {
+		return nil
+	}
+
+	if err := bridge.vault.SetSMTPSSL(newSSL); err != nil {
+		return err
+	}
+
+	return bridge.restartSMTP()
+}
+
+func (bridge *Bridge) GetGluonDir() string {
+	return bridge.vault.GetGluonDir()
+}
+
+func (bridge *Bridge) SetGluonDir(ctx context.Context, newGluonDir string) error {
+	return safe.RLockRet(func() error {
+		currentGluonDir := bridge.GetGluonDir()
+		if newGluonDir == currentGluonDir {
+			return fmt.Errorf("new gluon dir is the same as the old one")
+		}
+
+		currentVolumeName := filepath.VolumeName(currentGluonDir)
+		newVolumeName := filepath.VolumeName(newGluonDir)
+
+		if currentVolumeName != newVolumeName {
+			return fmt.Errorf("it's currently not possible to move the cache between different volumes")
+		}
+
+		if err := bridge.closeIMAP(context.Background()); err != nil {
+			return fmt.Errorf("failed to close IMAP: %w", err)
+		}
+
+		if err := moveDir(bridge.GetGluonDir(), newGluonDir); err != nil {
+			return fmt.Errorf("failed to move gluon dir: %w", err)
+		}
+
+		if err := bridge.vault.SetGluonDir(newGluonDir); err != nil {
+			return fmt.Errorf("failed to set new gluon dir: %w", err)
+		}
+
+		imapServer, err := newIMAPServer(
+			bridge.vault.GetGluonDir(),
+			bridge.curVersion,
+			bridge.tlsConfig,
+			bridge.reporter,
+			bridge.logIMAPClient,
+			bridge.logIMAPServer,
+			bridge.imapEventCh,
+			bridge.tasks,
+		)
+		if err != nil {
+			return fmt.Errorf("failed to create new IMAP server: %w", err)
+		}
+
+		bridge.imapServer = imapServer
+
+		for _, user := range bridge.users {
+			if err := bridge.addIMAPUser(ctx, user); err != nil {
+				return fmt.Errorf("failed to add users to new IMAP server: %w", err)
+			}
+		}
+
+		if err := bridge.serveIMAP(); err != nil {
+			return fmt.Errorf("failed to serve IMAP: %w", err)
+		}
+
+		return nil
+	}, bridge.usersLock)
+}
+
+func (bridge *Bridge) GetProxyAllowed() bool {
+	return bridge.vault.GetProxyAllowed()
+}
+
+func (bridge *Bridge) SetProxyAllowed(allowed bool) error {
+	if allowed {
+		bridge.proxyCtl.AllowProxy()
+	} else {
+		bridge.proxyCtl.DisallowProxy()
+	}
+
+	return bridge.vault.SetProxyAllowed(allowed)
+}
+
+func (bridge *Bridge) GetShowAllMail() bool {
+	return bridge.vault.GetShowAllMail()
+}
+
+func (bridge *Bridge) SetShowAllMail(show bool) error {
+	return safe.RLockRet(func() error {
+		for _, user := range bridge.users {
+			user.SetShowAllMail(show)
+		}
+
+		return bridge.vault.SetShowAllMail(show)
+	}, bridge.usersLock)
+}
+
+func (bridge *Bridge) GetAutostart() bool {
+	return bridge.vault.GetAutostart()
+}
+
+func (bridge *Bridge) SetAutostart(autostart bool) error {
+	if err := bridge.vault.SetAutostart(autostart); err != nil {
+		return err
+	}
+
+	var err error
+
+	if autostart {
+		err = bridge.autostarter.Enable()
+	} else {
+		err = bridge.autostarter.Disable()
+	}
+
+	return err
+}
+
+func (bridge *Bridge) GetAutoUpdate() bool {
+	return bridge.vault.GetAutoUpdate()
+}
+
+func (bridge *Bridge) SetAutoUpdate(autoUpdate bool) error {
+	if bridge.vault.GetAutoUpdate() == autoUpdate {
+		return nil
+	}
+
+	if err := bridge.vault.SetAutoUpdate(autoUpdate); err != nil {
+		return err
+	}
+
+	bridge.goUpdate()
+
+	return nil
+}
+
+func (bridge *Bridge) GetUpdateChannel() updater.Channel {
+	return bridge.vault.GetUpdateChannel()
+}
+
+func (bridge *Bridge) SetUpdateChannel(channel updater.Channel) error {
+	if bridge.vault.GetUpdateChannel() == channel {
+		return nil
+	}
+
+	if err := bridge.vault.SetUpdateChannel(channel); err != nil {
+		return err
+	}
+
+	bridge.goUpdate()
+
+	return nil
+}
+
+func (bridge *Bridge) GetCurrentVersion() *semver.Version {
+	return bridge.curVersion
+}
+
+func (bridge *Bridge) GetLastVersion() *semver.Version {
+	return bridge.vault.GetLastVersion()
+}
+
+func (bridge *Bridge) GetFirstStart() bool {
+	return bridge.vault.GetFirstStart()
+}
+
+func (bridge *Bridge) SetFirstStart(firstStart bool) error {
+	return bridge.vault.SetFirstStart(firstStart)
+}
+
+func (bridge *Bridge) GetFirstStartGUI() bool {
+	return bridge.vault.GetFirstStartGUI()
+}
+
+func (bridge *Bridge) SetFirstStartGUI(firstStart bool) error {
+	return bridge.vault.SetFirstStartGUI(firstStart)
+}
+
+func (bridge *Bridge) GetColorScheme() string {
+	return bridge.vault.GetColorScheme()
+}
+
+func (bridge *Bridge) SetColorScheme(colorScheme string) error {
+	return bridge.vault.SetColorScheme(colorScheme)
+}
+
+func (bridge *Bridge) FactoryReset(ctx context.Context) {
+	// Delete all the users.
+	safe.Lock(func() {
+		for _, user := range bridge.users {
+			bridge.logoutUser(ctx, user, true, true)
+		}
+	}, bridge.usersLock)
+
+	// Wipe the vault.
+	gluonDir, err := bridge.locator.ProvideGluonPath()
+	if err != nil {
+		logrus.WithError(err).Error("Failed to provide gluon dir")
+	} else if err := bridge.vault.Reset(gluonDir); err != nil {
+		logrus.WithError(err).Error("Failed to reset vault")
+	}
+
+	// Then delete all files.
+	if err := bridge.locator.Clear(); err != nil {
+		logrus.WithError(err).Error("Failed to clear data paths")
+	}
+
+	// Lastly clear the keychain.
+	vaultDir, err := bridge.locator.ProvideSettingsPath()
+	if err != nil {
+		logrus.WithError(err).Error("Failed to get vault dir")
+	} else if helper, err := vault.GetHelper(vaultDir); err != nil {
+		logrus.WithError(err).Error("Failed to get keychain helper")
+	} else if keychain, err := keychain.NewKeychain(helper, constants.KeyChainName); err != nil {
+		logrus.WithError(err).Error("Failed to get keychain")
+	} else if err := keychain.Clear(); err != nil {
+		logrus.WithError(err).Error("Failed to clear keychain")
+	}
+}
+
+func getPort(addr net.Addr) int {
+	switch addr := addr.(type) {
+	case *net.TCPAddr:
+		return addr.Port
+
+	case *net.UDPAddr:
+		return addr.Port
+
+	default:
+		return 0
+	}
 }

internal/bridge/settings_test.go

@@ -0,0 +1,178 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge_test
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/ProtonMail/go-proton-api"
+	"github.com/ProtonMail/go-proton-api/server"
+	"github.com/ProtonMail/proton-bridge/v3/internal/bridge"
+	"github.com/stretchr/testify/require"
+)
+
+func TestBridge_Settings_GluonDir(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Create a user.
+			_, err := bridge.LoginFull(context.Background(), username, password, nil, nil)
+			require.NoError(t, err)
+
+			// Create a new location for the Gluon data.
+			newGluonDir := t.TempDir()
+
+			// Move the gluon dir; it should also move the user's data.
+			require.NoError(t, bridge.SetGluonDir(context.Background(), newGluonDir))
+
+			// Check that the new directory is not empty.
+			entries, err := os.ReadDir(newGluonDir)
+			require.NoError(t, err)
+
+			// There should be at least one entry.
+			require.NotEmpty(t, entries)
+		})
+	})
+}
+
+func TestBridge_Settings_IMAPPort(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			curPort := bridge.GetIMAPPort()
+
+			// Set the port to 1144.
+			require.NoError(t, bridge.SetIMAPPort(1144))
+
+			// Get the new setting.
+			require.Equal(t, 1144, bridge.GetIMAPPort())
+
+			// Assert that it has changed.
+			require.NotEqual(t, curPort, bridge.GetIMAPPort())
+		})
+	})
+}
+
+func TestBridge_Settings_IMAPSSL(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// By default, IMAP SSL is disabled.
+			require.False(t, bridge.GetIMAPSSL())
+
+			// Enable IMAP SSL.
+			require.NoError(t, bridge.SetIMAPSSL(true))
+
+			// Get the new setting.
+			require.True(t, bridge.GetIMAPSSL())
+		})
+	})
+}
+
+func TestBridge_Settings_SMTPPort(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			curPort := bridge.GetSMTPPort()
+
+			// Set the port to 1024.
+			require.NoError(t, bridge.SetSMTPPort(1024))
+
+			// Get the new setting.
+			require.Equal(t, 1024, bridge.GetSMTPPort())
+
+			// Assert that it has changed.
+			require.NotEqual(t, curPort, bridge.GetSMTPPort())
+		})
+	})
+}
+
+func TestBridge_Settings_SMTPSSL(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// By default, SMTP SSL is disabled.
+			require.False(t, bridge.GetSMTPSSL())
+
+			// Enable SMTP SSL.
+			require.NoError(t, bridge.SetSMTPSSL(true))
+
+			// Get the new setting.
+			require.True(t, bridge.GetSMTPSSL())
+		})
+	})
+}
+
+func TestBridge_Settings_Proxy(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// By default, proxy is allowed.
+			require.True(t, bridge.GetProxyAllowed())
+
+			// Disallow proxy.
+			mocks.ProxyCtl.EXPECT().DisallowProxy()
+			require.NoError(t, bridge.SetProxyAllowed(false))
+
+			// Get the new setting.
+			require.False(t, bridge.GetProxyAllowed())
+		})
+	})
+}
+
+func TestBridge_Settings_Autostart(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// By default, autostart is disabled.
+			require.False(t, bridge.GetAutostart())
+
+			// Enable autostart.
+			mocks.Autostarter.EXPECT().Enable().Return(nil)
+			require.NoError(t, bridge.SetAutostart(true))
+
+			// Get the new setting.
+			require.True(t, bridge.GetAutostart())
+		})
+	})
+}
+
+func TestBridge_Settings_FirstStart(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// By default, first start is true.
+			require.True(t, bridge.GetFirstStart())
+
+			// Set first start to false.
+			require.NoError(t, bridge.SetFirstStart(false))
+
+			// Get the new setting.
+			require.False(t, bridge.GetFirstStart())
+		})
+	})
+}
+
+func TestBridge_Settings_FirstStartGUI(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// By default, first start is true.
+			require.True(t, bridge.GetFirstStartGUI())
+
+			// Set first start to false.
+			require.NoError(t, bridge.SetFirstStartGUI(false))
+
+			// Get the new setting.
+			require.False(t, bridge.GetFirstStartGUI())
+		})
+	})
+}

internal/bridge/smtp.go

@@ -0,0 +1,116 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+
+	"github.com/ProtonMail/proton-bridge/v3/internal/logging"
+
+	"github.com/ProtonMail/proton-bridge/v3/internal/constants"
+	"github.com/emersion/go-sasl"
+	"github.com/emersion/go-smtp"
+	"github.com/sirupsen/logrus"
+)
+
+func (bridge *Bridge) serveSMTP() error {
+	logrus.Info("Starting SMTP server")
+
+	smtpListener, err := newListener(bridge.vault.GetSMTPPort(), bridge.vault.GetSMTPSSL(), bridge.tlsConfig)
+	if err != nil {
+		return fmt.Errorf("failed to create SMTP listener: %w", err)
+	}
+
+	bridge.smtpListener = smtpListener
+
+	bridge.tasks.Once(func(context.Context) {
+		if err := bridge.smtpServer.Serve(smtpListener); err != nil {
+			logrus.WithError(err).Info("SMTP server stopped")
+		}
+	})
+
+	if err := bridge.vault.SetSMTPPort(getPort(smtpListener.Addr())); err != nil {
+		return fmt.Errorf("failed to set IMAP port: %w", err)
+	}
+
+	return nil
+}
+
+func (bridge *Bridge) restartSMTP() error {
+	logrus.Info("Restarting SMTP server")
+
+	if err := bridge.closeSMTP(); err != nil {
+		return fmt.Errorf("failed to close SMTP: %w", err)
+	}
+
+	bridge.smtpServer = newSMTPServer(bridge, bridge.tlsConfig, bridge.logSMTP)
+
+	return bridge.serveSMTP()
+}
+
+// We close the listener ourselves even though it's also closed by smtpServer.Close().
+// This is because smtpServer.Serve() is called in a separate goroutine and might be executed
+// after we've already closed the server. However, go-smtp has a bug; it blocks on the listener
+// even after the server has been closed. So we close the listener ourselves to unblock it.
+func (bridge *Bridge) closeSMTP() error {
+	logrus.Info("Closing SMTP server")
+
+	if bridge.smtpListener != nil {
+		if err := bridge.smtpListener.Close(); err != nil {
+			return fmt.Errorf("failed to close SMTP listener: %w", err)
+		}
+	}
+
+	if err := bridge.smtpServer.Close(); err != nil {
+		logrus.WithError(err).Debug("Failed to close SMTP server (expected -- we close the listener ourselves)")
+	}
+
+	return nil
+}
+
+func newSMTPServer(bridge *Bridge, tlsConfig *tls.Config, logSMTP bool) *smtp.Server {
+	logrus.WithField("logSMTP", logSMTP).Info("Creating SMTP server")
+
+	smtpServer := smtp.NewServer(&smtpBackend{Bridge: bridge})
+
+	smtpServer.TLSConfig = tlsConfig
+	smtpServer.Domain = constants.Host
+	smtpServer.AllowInsecureAuth = true
+	smtpServer.MaxLineLength = 1 << 16
+	smtpServer.ErrorLog = logging.NewSMTPLogger()
+
+	// go-smtp suppors SASL PLAIN but not LOGIN. We need to add LOGIN support ourselves.
+	smtpServer.EnableAuth(sasl.Login, func(conn *smtp.Conn) sasl.Server {
+		return sasl.NewLoginServer(func(username, password string) error {
+			return conn.Session().AuthPlain(username, password)
+		})
+	})
+
+	if logSMTP {
+		log := logrus.WithField("protocol", "SMTP")
+		log.Warning("================================================")
+		log.Warning("THIS LOG WILL CONTAIN **DECRYPTED** MESSAGE DATA")
+		log.Warning("================================================")
+
+		smtpServer.Debug = logging.NewSMTPDebugLogger()
+	}
+
+	return smtpServer
+}

internal/bridge/smtp_backend.go

@@ -0,0 +1,96 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge
+
+import (
+	"fmt"
+	"io"
+
+	"github.com/ProtonMail/proton-bridge/v3/internal/safe"
+	"github.com/emersion/go-smtp"
+)
+
+type smtpBackend struct {
+	*Bridge
+}
+
+type smtpSession struct {
+	*Bridge
+
+	userID string
+	authID string
+
+	from string
+	to   []string
+}
+
+func (be *smtpBackend) NewSession(*smtp.Conn) (smtp.Session, error) {
+	return &smtpSession{Bridge: be.Bridge}, nil
+}
+
+func (s *smtpSession) AuthPlain(username, password string) error {
+	return safe.RLockRet(func() error {
+		for _, user := range s.users {
+			addrID, err := user.CheckAuth(username, []byte(password))
+			if err != nil {
+				continue
+			}
+
+			s.userID = user.ID()
+			s.authID = addrID
+
+			return nil
+		}
+
+		return fmt.Errorf("invalid username or password")
+	}, s.usersLock)
+}
+
+func (s *smtpSession) Reset() {
+	s.from = ""
+	s.to = nil
+}
+
+func (s *smtpSession) Logout() error {
+	s.Reset()
+	return nil
+}
+
+func (s *smtpSession) Mail(from string, opts *smtp.MailOptions) error {
+	s.from = from
+	return nil
+}
+
+func (s *smtpSession) Rcpt(to string) error {
+	if len(to) > 0 {
+		s.to = append(s.to, to)
+	}
+
+	return nil
+}
+
+func (s *smtpSession) Data(r io.Reader) error {
+	return safe.RLockRet(func() error {
+		user, ok := s.users[s.userID]
+		if !ok {
+			return ErrNoSuchUser
+		}
+
+		return user.SendMail(s.authID, s.from, s.to, r)
+	}, s.usersLock)
+}

internal/bridge/store_factory.go

@@ -1,87 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-package bridge
-
-import (
-	"fmt"
-	"path/filepath"
-
-	"github.com/ProtonMail/proton-bridge/v2/internal/sentry"
-	"github.com/ProtonMail/proton-bridge/v2/internal/store"
-	"github.com/ProtonMail/proton-bridge/v2/internal/store/cache"
-	"github.com/ProtonMail/proton-bridge/v2/internal/users"
-	"github.com/ProtonMail/proton-bridge/v2/pkg/listener"
-	"github.com/ProtonMail/proton-bridge/v2/pkg/message"
-)
-
-type storeFactory struct {
-	cacheProvider  CacheProvider
-	sentryReporter *sentry.Reporter
-	panicHandler   users.PanicHandler
-	eventListener  listener.Listener
-	events         *store.Events
-	cache          cache.Cache
-	builder        *message.Builder
-}
-
-func newStoreFactory(
-	cacheProvider CacheProvider,
-	sentryReporter *sentry.Reporter,
-	panicHandler users.PanicHandler,
-	eventListener listener.Listener,
-	cache cache.Cache,
-	builder *message.Builder,
-) *storeFactory {
-	return &storeFactory{
-		cacheProvider:  cacheProvider,
-		sentryReporter: sentryReporter,
-		panicHandler:   panicHandler,
-		eventListener:  eventListener,
-		events:         store.NewEvents(cacheProvider.GetIMAPCachePath()),
-		cache:          cache,
-		builder:        builder,
-	}
-}
-
-// New creates new store for given user.
-func (f *storeFactory) New(user store.BridgeUser) (*store.Store, error) {
-	return store.New(
-		f.sentryReporter,
-		f.panicHandler,
-		user,
-		f.eventListener,
-		f.cache,
-		f.builder,
-		getUserStorePath(f.cacheProvider.GetDBDir(), user.ID()),
-		f.events,
-	)
-}
-
-// Remove removes all store files for given user.
-func (f *storeFactory) Remove(userID string) error {
-	return store.RemoveStore(
-		f.events,
-		getUserStorePath(f.cacheProvider.GetDBDir(), userID),
-		userID,
-	)
-}
-
-// getUserStorePath returns the file path of the store database for the given userID.
-func getUserStorePath(storeDir string, userID string) (path string) {
-	return filepath.Join(storeDir, fmt.Sprintf("mailbox-%v.db", userID))
-}

internal/bridge/sync_test.go

@@ -0,0 +1,205 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge_test
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+	"sync/atomic"
+	"testing"
+
+	"github.com/ProtonMail/go-proton-api"
+	"github.com/ProtonMail/go-proton-api/server"
+	"github.com/ProtonMail/proton-bridge/v3/internal/bridge"
+	"github.com/ProtonMail/proton-bridge/v3/internal/constants"
+	"github.com/ProtonMail/proton-bridge/v3/internal/events"
+	"github.com/bradenaw/juniper/iterator"
+	"github.com/bradenaw/juniper/stream"
+	"github.com/emersion/go-imap/client"
+	"github.com/stretchr/testify/require"
+)
+
+func TestBridge_Sync(t *testing.T) {
+	numMsg := 1 << 8
+
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		userID, addrID, err := s.CreateUser("imap", "imap@pm.me", password)
+		require.NoError(t, err)
+
+		labelID, err := s.CreateLabel(userID, "folder", "", proton.LabelTypeFolder)
+		require.NoError(t, err)
+
+		withClient(ctx, t, s, "imap", password, func(ctx context.Context, c *proton.Client) {
+			createMessages(ctx, t, c, addrID, labelID, numMsg)
+		})
+
+		var total uint64
+
+		// The initial user should be fully synced.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			syncCh, done := chToType[events.Event, events.SyncFinished](bridge.GetEvents(events.SyncFinished{}))
+			defer done()
+
+			// Count how many bytes it takes to fully sync the user.
+			total = countBytesRead(netCtl, func() {
+				userID, err := bridge.LoginFull(ctx, "imap", password, nil, nil)
+				require.NoError(t, err)
+
+				require.Equal(t, userID, (<-syncCh).UserID)
+			})
+		})
+
+		// If we then connect an IMAP client, it should see all the messages.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(b *bridge.Bridge, mocks *bridge.Mocks) {
+			info, err := b.GetUserInfo(userID)
+			require.NoError(t, err)
+			require.True(t, info.State == bridge.Connected)
+
+			client, err := client.Dial(fmt.Sprintf("%v:%v", constants.Host, b.GetIMAPPort()))
+			require.NoError(t, err)
+			require.NoError(t, client.Login("imap@pm.me", string(info.BridgePass)))
+			defer func() { _ = client.Logout() }()
+
+			status, err := client.Select(`Folders/folder`, false)
+			require.NoError(t, err)
+			require.Equal(t, uint32(numMsg), status.Messages)
+		})
+
+		// Now let's remove the user and simulate a network error.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			require.NoError(t, bridge.DeleteUser(ctx, userID))
+		})
+
+		// Pretend we can only sync 2/3 of the original messages.
+		netCtl.SetReadLimit(2 * total / 3)
+
+		// Login the user; its sync should fail.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(b *bridge.Bridge, mocks *bridge.Mocks) {
+			{
+				syncCh, done := chToType[events.Event, events.SyncFailed](b.GetEvents(events.SyncFailed{}))
+				defer done()
+
+				userID, err := b.LoginFull(ctx, "imap", password, nil, nil)
+				require.NoError(t, err)
+
+				require.Equal(t, userID, (<-syncCh).UserID)
+
+				info, err := b.GetUserInfo(userID)
+				require.NoError(t, err)
+				require.True(t, info.State == bridge.Connected)
+
+				client, err := client.Dial(fmt.Sprintf("%v:%v", constants.Host, b.GetIMAPPort()))
+				require.NoError(t, err)
+				require.NoError(t, client.Login("imap@pm.me", string(info.BridgePass)))
+				defer func() { _ = client.Logout() }()
+
+				status, err := client.Select(`Folders/folder`, false)
+				require.NoError(t, err)
+				require.Less(t, status.Messages, uint32(numMsg))
+			}
+
+			// Remove the network limit, allowing the sync to finish.
+			netCtl.SetReadLimit(0)
+
+			{
+				syncCh, done := chToType[events.Event, events.SyncFinished](b.GetEvents(events.SyncFinished{}))
+				defer done()
+
+				require.Equal(t, userID, (<-syncCh).UserID)
+
+				info, err := b.GetUserInfo(userID)
+				require.NoError(t, err)
+				require.True(t, info.State == bridge.Connected)
+
+				client, err := client.Dial(fmt.Sprintf("%v:%v", constants.Host, b.GetIMAPPort()))
+				require.NoError(t, err)
+				require.NoError(t, client.Login("imap@pm.me", string(info.BridgePass)))
+				defer func() { _ = client.Logout() }()
+
+				status, err := client.Select(`Folders/folder`, false)
+				require.NoError(t, err)
+				require.Equal(t, uint32(numMsg), status.Messages)
+			}
+		})
+	}, server.WithTLS(false))
+}
+
+func withClient(ctx context.Context, t *testing.T, s *server.Server, username string, password []byte, fn func(context.Context, *proton.Client)) {
+	m := proton.New(
+		proton.WithHostURL(s.GetHostURL()),
+		proton.WithTransport(proton.InsecureTransport()),
+	)
+
+	c, _, err := m.NewClientWithLogin(ctx, username, password)
+	require.NoError(t, err)
+	defer c.Close()
+
+	fn(ctx, c)
+}
+
+func createMessages(ctx context.Context, t *testing.T, c *proton.Client, addrID, labelID string, count int) {
+	literal, err := os.ReadFile(filepath.Join("testdata", "text-plain.eml"))
+	require.NoError(t, err)
+
+	user, err := c.GetUser(ctx)
+	require.NoError(t, err)
+
+	addr, err := c.GetAddresses(ctx)
+	require.NoError(t, err)
+
+	salt, err := c.GetSalts(ctx)
+	require.NoError(t, err)
+
+	keyPass, err := salt.SaltForKey(password, user.Keys.Primary().ID)
+	require.NoError(t, err)
+
+	_, addrKRs, err := proton.Unlock(user, addr, keyPass)
+	require.NoError(t, err)
+
+	require.NoError(t, getErr(stream.Collect(ctx, c.ImportMessages(
+		ctx,
+		addrKRs[addrID],
+		runtime.NumCPU(),
+		runtime.NumCPU(),
+		iterator.Collect(iterator.Map(iterator.Counter(count), func(i int) proton.ImportReq {
+			return proton.ImportReq{
+				Metadata: proton.ImportMetadata{
+					AddressID: addrID,
+					LabelIDs:  []string{labelID},
+					Flags:     proton.MessageFlagReceived,
+				},
+				Message: literal,
+			}
+		}))...,
+	))))
+}
+
+func countBytesRead(ctl *proton.NetCtl, fn func()) uint64 {
+	var read uint64
+
+	ctl.OnRead(func(b []byte) {
+		atomic.AddUint64(&read, uint64(len(b)))
+	})
+
+	fn()
+
+	return read
+}

internal/bridge/testdata/text-plain.eml

@@ -0,0 +1,6 @@
+To: recipient@pm.me
+From: sender@pm.me
+Subject: Test
+Content-Type: text/plain; charset=utf-8
+
+Test

internal/bridge/tls.go

@@ -17,48 +17,6 @@
 
 package bridge
 
-import (
-	"crypto/tls"
-
-	pkgTLS "github.com/ProtonMail/proton-bridge/v2/internal/config/tls"
-	"github.com/pkg/errors"
-	logrus "github.com/sirupsen/logrus"
-)
-
-func (b *Bridge) GetTLSConfig() (*tls.Config, error) {
-	if !b.tls.HasCerts() {
-		if err := b.generateTLSCerts(); err != nil {
-			return nil, err
-		}
-	}
-
-	tlsConfig, err := b.tls.GetConfig()
-	if err == nil {
-		return tlsConfig, nil
-	}
-
-	logrus.WithError(err).Error("Failed to load TLS config, regenerating certificates")
-
-	if err := b.generateTLSCerts(); err != nil {
-		return nil, err
-	}
-
-	return b.tls.GetConfig()
-}
-
-func (b *Bridge) generateTLSCerts() error {
-	template, err := pkgTLS.NewTLSTemplate()
-	if err != nil {
-		return errors.Wrap(err, "failed to generate TLS template")
-	}
-
-	if err := b.tls.GenerateCerts(template); err != nil {
-		return errors.Wrap(err, "failed to generate TLS certs")
-	}
-
-	if err := b.tls.InstallCerts(); err != nil {
-		return errors.Wrap(err, "failed to install TLS certs")
-	}
-
-	return nil
+func (bridge *Bridge) GetBridgeTLSCert() ([]byte, []byte) {
+	return bridge.vault.GetBridgeTLSCert(), bridge.vault.GetBridgeTLSKey()
 }

internal/bridge/types.go

@@ -13,50 +13,47 @@
 // GNU General Public License for more details.
 //
 // You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
 
 package bridge
 
 import (
-	"github.com/Masterminds/semver/v3"
+	"context"
 
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/settings"
-	"github.com/ProtonMail/proton-bridge/v2/internal/updater"
+	"github.com/ProtonMail/proton-bridge/v3/internal/updater"
 )
 
 type Locator interface {
+	ProvideSettingsPath() (string, error)
 	ProvideLogsPath() (string, error)
-
+	ProvideGluonPath() (string, error)
 	GetLicenseFilePath() string
 	GetDependencyLicensesLink() string
-
 	Clear() error
-	ClearUpdates() error
 }
 
-type CacheProvider interface {
-	GetIMAPCachePath() string
-	GetDBDir() string
-	GetDefaultMessageCacheDir() string
+type Identifier interface {
+	GetUserAgent() string
+	HasClient() bool
+	SetClient(name, version string)
+	SetPlatform(platform string)
 }
 
-type SettingsProvider interface {
-	Get(key settings.Key) string
-	Set(key settings.Key, value string)
+type ProxyController interface {
+	AllowProxy()
+	DisallowProxy()
+}
 
-	GetBool(key settings.Key) bool
-	SetBool(key settings.Key, val bool)
+type TLSReporter interface {
+	GetTLSIssueCh() <-chan struct{}
+}
 
-	GetInt(key settings.Key) int
-	SetInt(key settings.Key, val int)
+type Autostarter interface {
+	Enable() error
+	Disable() error
 }
 
 type Updater interface {
-	Check() (updater.VersionInfo, error)
-	IsDowngrade(updater.VersionInfo) bool
-	InstallUpdate(updater.VersionInfo) error
-}
-
-type Versioner interface {
-	RemoveOtherVersions(*semver.Version) error
+	GetVersionInfo(context.Context, updater.Downloader, updater.Channel) (updater.VersionInfo, error)
+	InstallUpdate(context.Context, updater.Downloader, updater.VersionInfo) error
 }

internal/bridge/updates.go

@@ -0,0 +1,156 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge
+
+import (
+	"context"
+	"errors"
+
+	"github.com/ProtonMail/proton-bridge/v3/internal/events"
+	"github.com/ProtonMail/proton-bridge/v3/internal/safe"
+	"github.com/ProtonMail/proton-bridge/v3/internal/updater"
+	"github.com/sirupsen/logrus"
+)
+
+func (bridge *Bridge) CheckForUpdates() {
+	bridge.goUpdate()
+}
+
+func (bridge *Bridge) InstallUpdate(version updater.VersionInfo) {
+	log := logrus.WithFields(logrus.Fields{
+		"version": version.Version,
+		"current": bridge.curVersion,
+		"channel": bridge.vault.GetUpdateChannel(),
+	})
+
+	select {
+	case bridge.installCh <- installJob{version: version, silent: false}:
+		log.Info("The update will be installed manually")
+
+	default:
+		log.Info("An update is already being installed")
+	}
+}
+
+func (bridge *Bridge) handleUpdate(version updater.VersionInfo) {
+	log := logrus.WithFields(logrus.Fields{
+		"version": version.Version,
+		"current": bridge.curVersion,
+		"channel": bridge.vault.GetUpdateChannel(),
+	})
+
+	bridge.publish(events.UpdateLatest{
+		Version: version,
+	})
+
+	switch {
+	case !version.Version.GreaterThan(bridge.curVersion):
+		log.Debug("No update available")
+
+		bridge.publish(events.UpdateNotAvailable{})
+
+	case version.RolloutProportion < bridge.vault.GetUpdateRollout():
+		log.Info("An update is available but has not been rolled out yet")
+
+		bridge.publish(events.UpdateNotAvailable{})
+
+	case bridge.curVersion.LessThan(version.MinAuto):
+		log.Info("An update is available but is incompatible with this version")
+
+		bridge.publish(events.UpdateAvailable{
+			Version:    version,
+			Compatible: false,
+			Silent:     false,
+		})
+
+	case !bridge.vault.GetAutoUpdate():
+		log.Info("An update is available but auto-update is disabled")
+
+		bridge.publish(events.UpdateAvailable{
+			Version:    version,
+			Compatible: true,
+			Silent:     false,
+		})
+
+	default:
+		safe.RLock(func() {
+			if version.Version.GreaterThan(bridge.newVersion) {
+				log.Info("An update is available")
+
+				select {
+				case bridge.installCh <- installJob{version: version, silent: true}:
+					log.Info("The update will be installed silently")
+
+				default:
+					log.Info("An update is already being installed")
+				}
+			}
+		}, bridge.newVersionLock)
+	}
+}
+
+type installJob struct {
+	version updater.VersionInfo
+	silent  bool
+}
+
+func (bridge *Bridge) installUpdate(ctx context.Context, job installJob) {
+	safe.Lock(func() {
+		log := logrus.WithFields(logrus.Fields{
+			"version": job.version.Version,
+			"current": bridge.curVersion,
+			"channel": bridge.vault.GetUpdateChannel(),
+		})
+
+		bridge.publish(events.UpdateAvailable{
+			Version:    job.version,
+			Compatible: true,
+			Silent:     job.silent,
+		})
+
+		bridge.publish(events.UpdateInstalling{
+			Version: job.version,
+			Silent:  job.silent,
+		})
+
+		err := bridge.updater.InstallUpdate(ctx, bridge.api, job.version)
+
+		switch {
+		case errors.Is(err, updater.ErrUpdateAlreadyInstalled):
+			log.Info("The update was already installed")
+
+		case err != nil:
+			log.WithError(err).Error("The update could not be installed")
+
+			bridge.publish(events.UpdateFailed{
+				Version: job.version,
+				Silent:  job.silent,
+				Error:   err,
+			})
+		default:
+			log.Info("The update was installed successfully")
+
+			bridge.publish(events.UpdateInstalled{
+				Version: job.version,
+				Silent:  job.silent,
+			})
+
+			bridge.newVersion = job.version.Version
+		}
+	}, bridge.newVersionLock)
+}

internal/bridge/user.go

@@ -0,0 +1,574 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"runtime"
+
+	"github.com/ProtonMail/gluon/imap"
+	"github.com/ProtonMail/go-proton-api"
+	"github.com/ProtonMail/proton-bridge/v3/internal/async"
+	"github.com/ProtonMail/proton-bridge/v3/internal/events"
+	"github.com/ProtonMail/proton-bridge/v3/internal/logging"
+	"github.com/ProtonMail/proton-bridge/v3/internal/safe"
+	"github.com/ProtonMail/proton-bridge/v3/internal/try"
+	"github.com/ProtonMail/proton-bridge/v3/internal/user"
+	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
+	"github.com/go-resty/resty/v2"
+	"github.com/sirupsen/logrus"
+)
+
+type UserState int
+
+const (
+	SignedOut UserState = iota
+	Locked
+	Connected
+)
+
+type UserInfo struct {
+	// UserID is the user's API ID.
+	UserID string
+
+	// Username is the user's API username.
+	Username string
+
+	// Signed Out is true if the user is signed out (no AuthUID, user will need to provide credentials to log in again)
+	State UserState
+
+	// Addresses holds the user's email addresses. The first address is the primary address.
+	Addresses []string
+
+	// AddressMode is the user's address mode.
+	AddressMode vault.AddressMode
+
+	// BridgePass is the user's bridge password.
+	BridgePass []byte
+
+	// UsedSpace is the amount of space used by the user.
+	UsedSpace int
+
+	// MaxSpace is the total amount of space available to the user.
+	MaxSpace int
+}
+
+// GetUserIDs returns the IDs of all known users (authorized or not).
+func (bridge *Bridge) GetUserIDs() []string {
+	return bridge.vault.GetUserIDs()
+}
+
+// GetUserInfo returns info about the given user.
+func (bridge *Bridge) GetUserInfo(userID string) (UserInfo, error) {
+	return safe.RLockRetErr(func() (UserInfo, error) {
+		if user, ok := bridge.users[userID]; ok {
+			return getConnUserInfo(user), nil
+		}
+
+		var info UserInfo
+
+		if err := bridge.vault.GetUser(userID, func(user *vault.User) {
+			state := Locked
+			if len(user.AuthUID()) == 0 {
+				state = SignedOut
+			}
+			info = getUserInfo(user.UserID(), user.Username(), state, user.AddressMode())
+		}); err != nil {
+			return UserInfo{}, fmt.Errorf("failed to get user info: %w", err)
+		}
+
+		return info, nil
+	}, bridge.usersLock)
+}
+
+// QueryUserInfo queries the user info by username or address.
+func (bridge *Bridge) QueryUserInfo(query string) (UserInfo, error) {
+	return safe.RLockRetErr(func() (UserInfo, error) {
+		for _, user := range bridge.users {
+			if user.Match(query) {
+				return getConnUserInfo(user), nil
+			}
+		}
+
+		return UserInfo{}, ErrNoSuchUser
+	}, bridge.usersLock)
+}
+
+// LoginAuth begins the login process. It returns an authorized client that might need 2FA.
+func (bridge *Bridge) LoginAuth(ctx context.Context, username string, password []byte) (*proton.Client, proton.Auth, error) {
+	logrus.WithField("username", logging.Sensitive(username)).Info("Authorizing user for login")
+
+	if username == "crash@bandicoot" {
+		panic("Your wish is my command.. I crash!")
+	}
+
+	client, auth, err := bridge.api.NewClientWithLogin(ctx, username, password)
+	if err != nil {
+		return nil, proton.Auth{}, fmt.Errorf("failed to create new API client: %w", err)
+	}
+
+	if ok := safe.RLockRet(func() bool { return mapHas(bridge.users, auth.UID) }, bridge.usersLock); ok {
+		logrus.WithField("userID", auth.UserID).Warn("User already logged in")
+
+		if err := client.AuthDelete(ctx); err != nil {
+			logrus.WithError(err).Warn("Failed to delete auth")
+		}
+
+		return nil, proton.Auth{}, ErrUserAlreadyLoggedIn
+	}
+
+	return client, auth, nil
+}
+
+// LoginUser finishes the user login process using the client and auth received from LoginAuth.
+func (bridge *Bridge) LoginUser(
+	ctx context.Context,
+	client *proton.Client,
+	auth proton.Auth,
+	keyPass []byte,
+) (string, error) {
+	logrus.WithField("userID", auth.UserID).Info("Logging in authorized user")
+
+	userID, err := try.CatchVal(
+		func() (string, error) {
+			return bridge.loginUser(ctx, client, auth.UID, auth.RefreshToken, keyPass)
+		},
+		func() error {
+			return client.AuthDelete(ctx)
+		},
+	)
+	if err != nil {
+		return "", fmt.Errorf("failed to login user: %w", err)
+	}
+
+	bridge.publish(events.UserLoggedIn{
+		UserID: userID,
+	})
+
+	return userID, nil
+}
+
+// LoginFull authorizes a new bridge user with the given username and password.
+// If necessary, a TOTP and mailbox password are requested via the callbacks.
+// This is equivalent to doing LoginAuth and LoginUser separately.
+func (bridge *Bridge) LoginFull(
+	ctx context.Context,
+	username string,
+	password []byte,
+	getTOTP func() (string, error),
+	getKeyPass func() ([]byte, error),
+) (string, error) {
+	logrus.WithField("username", logging.Sensitive(username)).Info("Performing full user login")
+
+	client, auth, err := bridge.LoginAuth(ctx, username, password)
+	if err != nil {
+		return "", fmt.Errorf("failed to begin login process: %w", err)
+	}
+
+	if auth.TwoFA.Enabled&proton.HasTOTP != 0 {
+		logrus.WithField("userID", auth.UserID).Info("Requesting TOTP")
+
+		totp, err := getTOTP()
+		if err != nil {
+			return "", fmt.Errorf("failed to get TOTP: %w", err)
+		}
+
+		if err := client.Auth2FA(ctx, proton.Auth2FAReq{TwoFactorCode: totp}); err != nil {
+			return "", fmt.Errorf("failed to authorize 2FA: %w", err)
+		}
+	}
+
+	var keyPass []byte
+
+	if auth.PasswordMode == proton.TwoPasswordMode {
+		logrus.WithField("userID", auth.UserID).Info("Requesting mailbox password")
+
+		userKeyPass, err := getKeyPass()
+		if err != nil {
+			return "", fmt.Errorf("failed to get key password: %w", err)
+		}
+
+		keyPass = userKeyPass
+	} else {
+		keyPass = password
+	}
+
+	return bridge.LoginUser(ctx, client, auth, keyPass)
+}
+
+// LogoutUser logs out the given user.
+func (bridge *Bridge) LogoutUser(ctx context.Context, userID string) error {
+	logrus.WithField("userID", userID).Info("Logging out user")
+
+	return safe.LockRet(func() error {
+		user, ok := bridge.users[userID]
+		if !ok {
+			return ErrNoSuchUser
+		}
+
+		bridge.logoutUser(ctx, user, true, false)
+
+		bridge.publish(events.UserLoggedOut{
+			UserID: userID,
+		})
+
+		return nil
+	}, bridge.usersLock)
+}
+
+// DeleteUser deletes the given user.
+func (bridge *Bridge) DeleteUser(ctx context.Context, userID string) error {
+	logrus.WithField("userID", userID).Info("Deleting user")
+
+	return safe.LockRet(func() error {
+		if !bridge.vault.HasUser(userID) {
+			return ErrNoSuchUser
+		}
+
+		if user, ok := bridge.users[userID]; ok {
+			bridge.logoutUser(ctx, user, true, true)
+		}
+
+		if err := bridge.vault.DeleteUser(userID); err != nil {
+			logrus.WithError(err).Error("Failed to delete vault user")
+		}
+
+		bridge.publish(events.UserDeleted{
+			UserID: userID,
+		})
+
+		return nil
+	}, bridge.usersLock)
+}
+
+// SetAddressMode sets the address mode for the given user.
+func (bridge *Bridge) SetAddressMode(ctx context.Context, userID string, mode vault.AddressMode) error {
+	logrus.WithField("userID", userID).WithField("mode", mode).Info("Setting address mode")
+
+	return safe.RLockRet(func() error {
+		user, ok := bridge.users[userID]
+		if !ok {
+			return ErrNoSuchUser
+		}
+
+		if user.GetAddressMode() == mode {
+			return fmt.Errorf("address mode is already %q", mode)
+		}
+
+		if err := bridge.removeIMAPUser(ctx, user, true); err != nil {
+			return fmt.Errorf("failed to remove IMAP user: %w", err)
+		}
+
+		if err := user.SetAddressMode(ctx, mode); err != nil {
+			return fmt.Errorf("failed to set address mode: %w", err)
+		}
+
+		if err := bridge.addIMAPUser(ctx, user); err != nil {
+			return fmt.Errorf("failed to add IMAP user: %w", err)
+		}
+
+		bridge.publish(events.AddressModeChanged{
+			UserID:      userID,
+			AddressMode: mode,
+		})
+
+		return nil
+	}, bridge.usersLock)
+}
+
+func (bridge *Bridge) loginUser(ctx context.Context, client *proton.Client, authUID, authRef string, keyPass []byte) (string, error) {
+	apiUser, err := client.GetUser(ctx)
+	if err != nil {
+		return "", fmt.Errorf("failed to get API user: %w", err)
+	}
+
+	salts, err := client.GetSalts(ctx)
+	if err != nil {
+		return "", fmt.Errorf("failed to get key salts: %w", err)
+	}
+
+	saltedKeyPass, err := salts.SaltForKey(keyPass, apiUser.Keys.Primary().ID)
+	if err != nil {
+		return "", fmt.Errorf("failed to salt key password: %w", err)
+	}
+
+	if userKR, err := apiUser.Keys.Unlock(saltedKeyPass, nil); err != nil {
+		return "", fmt.Errorf("failed to unlock user keys: %w", err)
+	} else if userKR.CountDecryptionEntities() == 0 {
+		return "", fmt.Errorf("failed to unlock user keys")
+	}
+
+	if err := bridge.addUser(ctx, client, apiUser, authUID, authRef, saltedKeyPass, true); err != nil {
+		return "", fmt.Errorf("failed to add bridge user: %w", err)
+	}
+
+	return apiUser.ID, nil
+}
+
+// loadUsers tries to load each user in the vault that isn't already loaded.
+func (bridge *Bridge) loadUsers(ctx context.Context) error {
+	return bridge.vault.ForUser(runtime.NumCPU(), func(user *vault.User) error {
+		if user.AuthUID() == "" {
+			return nil
+		}
+
+		if safe.RLockRet(func() bool { return mapHas(bridge.users, user.UserID()) }, bridge.usersLock) {
+			return nil
+		}
+
+		logrus.WithField("userID", user.UserID()).Info("Loading connected user")
+
+		bridge.publish(events.UserLoading{
+			UserID: user.UserID(),
+		})
+
+		if err := bridge.loadUser(ctx, user); err != nil {
+			logrus.WithError(err).Error("Failed to load connected user")
+
+			bridge.publish(events.UserLoadFail{
+				UserID: user.UserID(),
+				Error:  err,
+			})
+		} else {
+			logrus.WithField("userID", user.UserID()).Info("Successfully loaded user")
+
+			bridge.publish(events.UserLoadSuccess{
+				UserID: user.UserID(),
+			})
+		}
+
+		return nil
+	})
+}
+
+// loadUser loads an existing user from the vault.
+func (bridge *Bridge) loadUser(ctx context.Context, user *vault.User) error {
+	client, auth, err := bridge.api.NewClientWithRefresh(ctx, user.AuthUID(), user.AuthRef())
+	if err != nil {
+		if apiErr := new(proton.Error); errors.As(err, &apiErr) && (apiErr.Code == proton.AuthRefreshTokenInvalid) {
+			// The session cannot be refreshed, we sign out the user by clearing his auth secrets.
+			if err := user.Clear(); err != nil {
+				logrus.WithError(err).Warn("Failed to clear user secrets")
+			}
+		}
+		return fmt.Errorf("failed to create API client: %w", err)
+	}
+
+	if err := user.SetAuth(auth.UID, auth.RefreshToken); err != nil {
+		return fmt.Errorf("failed to set auth: %w", err)
+	}
+
+	apiUser, err := client.GetUser(ctx)
+	if err != nil {
+		return fmt.Errorf("failed to get user: %w", err)
+	}
+
+	if err := bridge.addUser(ctx, client, apiUser, auth.UID, auth.RefreshToken, user.KeyPass(), false); err != nil {
+		return fmt.Errorf("failed to add user: %w", err)
+	}
+
+	return nil
+}
+
+// addUser adds a new user with an already salted mailbox password.
+func (bridge *Bridge) addUser(
+	ctx context.Context,
+	client *proton.Client,
+	apiUser proton.User,
+	authUID, authRef string,
+	saltedKeyPass []byte,
+	isLogin bool,
+) error {
+	vaultUser, isNew, err := bridge.newVaultUser(apiUser, authUID, authRef, saltedKeyPass)
+	if err != nil {
+		return fmt.Errorf("failed to add vault user: %w", err)
+	}
+
+	if err := bridge.addUserWithVault(ctx, client, apiUser, vaultUser); err != nil {
+		if _, ok := err.(*resty.ResponseError); ok || isLogin {
+			logrus.WithError(err).Error("Failed to add user, clearing its secrets from vault")
+
+			if err := vaultUser.Clear(); err != nil {
+				logrus.WithError(err).Error("Failed to clear user secrets")
+			}
+		} else {
+			logrus.WithError(err).Error("Failed to add user")
+		}
+
+		if err := vaultUser.Close(); err != nil {
+			logrus.WithError(err).Error("Failed to close vault user")
+		}
+
+		if isNew {
+			logrus.Warn("Deleting newly added vault user")
+
+			if err := bridge.vault.DeleteUser(apiUser.ID); err != nil {
+				logrus.WithError(err).Error("Failed to delete vault user")
+			}
+		}
+
+		return fmt.Errorf("failed to add user with vault: %w", err)
+	}
+
+	return nil
+}
+
+// addUserWithVault adds a new user to bridge with the given vault.
+func (bridge *Bridge) addUserWithVault(
+	ctx context.Context,
+	client *proton.Client,
+	apiUser proton.User,
+	vault *vault.User,
+) error {
+	user, err := user.New(
+		ctx,
+		vault,
+		client,
+		bridge.reporter,
+		apiUser,
+		bridge.crashHandler,
+		bridge.vault.SyncWorkers(),
+		bridge.vault.GetShowAllMail(),
+	)
+	if err != nil {
+		return fmt.Errorf("failed to create user: %w", err)
+	}
+
+	// Connect the user's address(es) to gluon.
+	if err := bridge.addIMAPUser(ctx, user); err != nil {
+		return fmt.Errorf("failed to add IMAP user: %w", err)
+	}
+
+	// Handle events coming from the user before forwarding them to the bridge.
+	// For example, if the user's addresses change, we need to update them in gluon.
+	bridge.tasks.Once(func(ctx context.Context) {
+		async.RangeContext(ctx, user.GetEventCh(), func(event events.Event) {
+			logrus.WithFields(logrus.Fields{
+				"userID": apiUser.ID,
+				"event":  event,
+			}).Debug("Received user event")
+
+			if err := bridge.handleUserEvent(ctx, user, event); err != nil {
+				logrus.WithError(err).Error("Failed to handle user event")
+			} else {
+				bridge.publish(event)
+			}
+		})
+	})
+
+	// Gluon will set the IMAP ID in the context, if known, before making requests on behalf of this user.
+	// As such, if we find this ID in the context, we should use it to update our user agent.
+	client.AddPreRequestHook(func(_ *resty.Client, r *resty.Request) error {
+		if imapID, ok := imap.GetIMAPIDFromContext(r.Context()); ok {
+			bridge.identifier.SetClient(imapID.Name, imapID.Version)
+		}
+
+		return nil
+	})
+
+	// Finally, save the user in the bridge.
+	safe.Lock(func() {
+		bridge.users[apiUser.ID] = user
+	}, bridge.usersLock)
+
+	return nil
+}
+
+// newVaultUser creates a new vault user from the given auth information.
+// If one already exists in the vault, its data will be updated.
+func (bridge *Bridge) newVaultUser(
+	apiUser proton.User,
+	authUID, authRef string,
+	saltedKeyPass []byte,
+) (*vault.User, bool, error) {
+	if !bridge.vault.HasUser(apiUser.ID) {
+		user, err := bridge.vault.AddUser(apiUser.ID, apiUser.Name, authUID, authRef, saltedKeyPass)
+		if err != nil {
+			return nil, false, fmt.Errorf("failed to add user to vault: %w", err)
+		}
+
+		return user, true, nil
+	}
+
+	user, err := bridge.vault.NewUser(apiUser.ID)
+	if err != nil {
+		return nil, false, err
+	}
+
+	if err := user.SetAuth(authUID, authRef); err != nil {
+		return nil, false, err
+	}
+
+	if err := user.SetKeyPass(saltedKeyPass); err != nil {
+		return nil, false, err
+	}
+
+	return user, false, nil
+}
+
+// logout logs out the given user, optionally logging them out from the API too.
+func (bridge *Bridge) logoutUser(ctx context.Context, user *user.User, withAPI, withData bool) {
+	defer delete(bridge.users, user.ID())
+
+	logrus.WithFields(logrus.Fields{
+		"userID":   user.ID(),
+		"withAPI":  withAPI,
+		"withData": withData,
+	}).Debug("Logging out user")
+
+	if err := bridge.removeIMAPUser(ctx, user, withData); err != nil {
+		logrus.WithError(err).Error("Failed to remove IMAP user")
+	}
+
+	if err := user.Logout(ctx, withAPI); err != nil {
+		logrus.WithError(err).Error("Failed to logout user")
+	}
+
+	user.Close()
+}
+
+// getUserInfo returns information about a disconnected user.
+func getUserInfo(userID, username string, state UserState, addressMode vault.AddressMode) UserInfo {
+	return UserInfo{
+		State:       state,
+		UserID:      userID,
+		Username:    username,
+		AddressMode: addressMode,
+	}
+}
+
+// getConnUserInfo returns information about a connected user.
+func getConnUserInfo(user *user.User) UserInfo {
+	return UserInfo{
+		State:       Connected,
+		UserID:      user.ID(),
+		Username:    user.Name(),
+		Addresses:   user.Emails(),
+		AddressMode: user.GetAddressMode(),
+		BridgePass:  user.BridgePass(),
+		UsedSpace:   user.UsedSpace(),
+		MaxSpace:    user.MaxSpace(),
+	}
+}
+
+func mapHas[Key comparable, Val any](m map[Key]Val, key Key) bool {
+	_, ok := m[key]
+	return ok
+}

internal/bridge/user_events.go

@@ -0,0 +1,132 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/ProtonMail/proton-bridge/v3/internal/events"
+	"github.com/ProtonMail/proton-bridge/v3/internal/safe"
+	"github.com/ProtonMail/proton-bridge/v3/internal/user"
+	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
+)
+
+func (bridge *Bridge) handleUserEvent(ctx context.Context, user *user.User, event events.Event) error {
+	switch event := event.(type) {
+	case events.UserAddressCreated:
+		if err := bridge.handleUserAddressCreated(ctx, user, event); err != nil {
+			return fmt.Errorf("failed to handle user address created event: %w", err)
+		}
+
+	case events.UserAddressUpdated:
+		if err := bridge.handleUserAddressUpdated(ctx, user, event); err != nil {
+			return fmt.Errorf("failed to handle user address updated event: %w", err)
+		}
+
+	case events.UserAddressDeleted:
+		if err := bridge.handleUserAddressDeleted(ctx, user, event); err != nil {
+			return fmt.Errorf("failed to handle user address deleted event: %w", err)
+		}
+
+	case events.UserRefreshed:
+		if err := bridge.handleUserRefreshed(ctx, user); err != nil {
+			return fmt.Errorf("failed to handle user refreshed event: %w", err)
+		}
+
+	case events.UserDeauth:
+		bridge.handleUserDeauth(ctx, user)
+	}
+
+	return nil
+}
+
+func (bridge *Bridge) handleUserAddressCreated(ctx context.Context, user *user.User, event events.UserAddressCreated) error {
+	if user.GetAddressMode() == vault.SplitMode {
+		if bridge.imapServer == nil {
+			return fmt.Errorf("no imap server instance running")
+		}
+
+		gluonID, err := bridge.imapServer.AddUser(ctx, user.NewIMAPConnector(event.AddressID), user.GluonKey())
+		if err != nil {
+			return fmt.Errorf("failed to add user to IMAP server: %w", err)
+		}
+
+		if err := user.SetGluonID(event.AddressID, gluonID); err != nil {
+			return fmt.Errorf("failed to set gluon ID: %w", err)
+		}
+	}
+
+	return nil
+}
+
+// GODT-1948: Handle addresses that have been disabled!
+func (bridge *Bridge) handleUserAddressUpdated(_ context.Context, user *user.User, _ events.UserAddressUpdated) error {
+	switch user.GetAddressMode() {
+	case vault.CombinedMode:
+		return fmt.Errorf("not implemented")
+
+	case vault.SplitMode:
+		return fmt.Errorf("not implemented")
+	}
+
+	return nil
+}
+
+func (bridge *Bridge) handleUserAddressDeleted(ctx context.Context, user *user.User, event events.UserAddressDeleted) error {
+	if user.GetAddressMode() == vault.SplitMode {
+		if bridge.imapServer == nil {
+			return fmt.Errorf("no imap server instance running")
+		}
+
+		gluonID, ok := user.GetGluonID(event.AddressID)
+		if !ok {
+			return fmt.Errorf("gluon ID not found for address %s", event.AddressID)
+		}
+
+		if err := bridge.imapServer.RemoveUser(ctx, gluonID, true); err != nil {
+			return fmt.Errorf("failed to remove user from IMAP server: %w", err)
+		}
+
+		if err := user.RemoveGluonID(event.AddressID, gluonID); err != nil {
+			return fmt.Errorf("failed to remove gluon ID for address: %w", err)
+		}
+	}
+
+	return nil
+}
+
+func (bridge *Bridge) handleUserRefreshed(ctx context.Context, user *user.User) error {
+	return safe.RLockRet(func() error {
+		if err := bridge.removeIMAPUser(ctx, user, true); err != nil {
+			return fmt.Errorf("failed to remove IMAP user: %w", err)
+		}
+
+		if err := bridge.addIMAPUser(ctx, user); err != nil {
+			return fmt.Errorf("failed to add IMAP user: %w", err)
+		}
+
+		return nil
+	}, bridge.usersLock)
+}
+
+func (bridge *Bridge) handleUserDeauth(ctx context.Context, user *user.User) {
+	safe.Lock(func() {
+		bridge.logoutUser(ctx, user, false, false)
+	}, bridge.usersLock)
+}

internal/bridge/user_test.go

@@ -0,0 +1,650 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge_test
+
+import (
+	"context"
+	"fmt"
+	"testing"
+	"time"
+
+	"github.com/ProtonMail/go-proton-api"
+	"github.com/ProtonMail/go-proton-api/server"
+	"github.com/ProtonMail/proton-bridge/v3/internal/bridge"
+	mocksPkg "github.com/ProtonMail/proton-bridge/v3/internal/bridge/mocks"
+	"github.com/ProtonMail/proton-bridge/v3/internal/events"
+	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
+	"github.com/golang/mock/gomock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestBridge_WithoutUsers(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			require.Empty(t, bridge.GetUserIDs())
+			require.Empty(t, getConnectedUserIDs(t, bridge))
+		})
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			require.Empty(t, bridge.GetUserIDs())
+			require.Empty(t, getConnectedUserIDs(t, bridge))
+		})
+	})
+}
+
+func TestBridge_Login(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Login the user.
+			userID, err := bridge.LoginFull(ctx, username, password, nil, nil)
+			require.NoError(t, err)
+
+			// The user is now connected.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Equal(t, []string{userID}, getConnectedUserIDs(t, bridge))
+		})
+	})
+}
+
+func TestBridge_LoginLogoutLogin(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Login the user.
+			userID := must(bridge.LoginFull(ctx, username, password, nil, nil))
+
+			// The user is now connected.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Equal(t, []string{userID}, getConnectedUserIDs(t, bridge))
+
+			// Logout the user.
+			require.NoError(t, bridge.LogoutUser(ctx, userID))
+
+			// The user is now disconnected.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Empty(t, getConnectedUserIDs(t, bridge))
+
+			// Login the user again.
+			newUserID := must(bridge.LoginFull(ctx, username, password, nil, nil))
+			require.Equal(t, userID, newUserID)
+
+			// The user is connected again.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Equal(t, []string{userID}, getConnectedUserIDs(t, bridge))
+		})
+	})
+}
+
+func TestBridge_LoginDeleteLogin(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Login the user.
+			userID := must(bridge.LoginFull(ctx, username, password, nil, nil))
+
+			// The user is now connected.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Equal(t, []string{userID}, getConnectedUserIDs(t, bridge))
+
+			// Delete the user.
+			require.NoError(t, bridge.DeleteUser(ctx, userID))
+
+			// The user is now gone.
+			require.Empty(t, bridge.GetUserIDs())
+			require.Empty(t, getConnectedUserIDs(t, bridge))
+
+			// Login the user again.
+			newUserID := must(bridge.LoginFull(ctx, username, password, nil, nil))
+			require.Equal(t, userID, newUserID)
+
+			// The user is connected again.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Equal(t, []string{userID}, getConnectedUserIDs(t, bridge))
+		})
+	})
+}
+
+func TestBridge_LoginDeauthLogin(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Login the user.
+			userID := must(bridge.LoginFull(ctx, username, password, nil, nil))
+
+			// Get a channel to receive the deauth event.
+			eventCh, done := bridge.GetEvents(events.UserDeauth{})
+			defer done()
+
+			// Deauth the user.
+			require.NoError(t, s.RevokeUser(userID))
+
+			// The user is eventually disconnected.
+			require.Eventually(t, func() bool {
+				return len(getConnectedUserIDs(t, bridge)) == 0
+			}, 10*time.Second, time.Second)
+
+			// We should get a deauth event.
+			require.IsType(t, events.UserDeauth{}, <-eventCh)
+
+			// Login the user after the disconnection.
+			newUserID := must(bridge.LoginFull(ctx, username, password, nil, nil))
+			require.Equal(t, userID, newUserID)
+
+			// The user is connected again.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Equal(t, []string{userID}, getConnectedUserIDs(t, bridge))
+		})
+	})
+}
+
+func TestBridge_LoginDeauthRestartLogin(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		var userID string
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Login the user.
+			userID = must(bridge.LoginFull(ctx, username, password, nil, nil))
+
+			// Get a channel to receive the deauth event.
+			eventCh, done := bridge.GetEvents(events.UserDeauth{})
+			defer done()
+
+			// Deauth the user.
+			require.NoError(t, s.RevokeUser(userID))
+
+			// The user is eventually disconnected.
+			require.Eventually(t, func() bool {
+				return len(getConnectedUserIDs(t, bridge)) == 0
+			}, 10*time.Second, time.Second)
+
+			// We should get a deauth event.
+			require.IsType(t, events.UserDeauth{}, <-eventCh)
+		})
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// The user should be disconnected at startup.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Empty(t, getConnectedUserIDs(t, bridge))
+
+			// Login the user after the disconnection.
+			newUserID := must(bridge.LoginFull(ctx, username, password, nil, nil))
+			require.Equal(t, userID, newUserID)
+
+			// The user is connected again.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Equal(t, []string{userID}, getConnectedUserIDs(t, bridge))
+		})
+	})
+}
+
+func TestBridge_LoginExpireLogin(t *testing.T) {
+	const authLife = 2 * time.Second
+
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		s.SetAuthLife(authLife)
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Login the user. Its auth will only be valid for a short time.
+			userID := must(bridge.LoginFull(ctx, username, password, nil, nil))
+
+			// Wait until the auth expires.
+			time.Sleep(authLife)
+
+			// The user will have to refresh but the logout will still succeed.
+			require.NoError(t, bridge.LogoutUser(ctx, userID))
+		})
+	})
+}
+
+func TestBridge_FailToLoad(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		var userID string
+
+		// Login the user.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			userID = must(bridge.LoginFull(ctx, username, password, nil, nil))
+		})
+
+		// Deauth the user while bridge is stopped.
+		require.NoError(t, s.RevokeUser(userID))
+
+		// When bridge starts, the user will not be logged in.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Empty(t, getConnectedUserIDs(t, bridge))
+		})
+	})
+}
+
+func TestBridge_LoadWithoutInternet(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		var userID string
+
+		// Login the user.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			userID = must(bridge.LoginFull(ctx, username, password, nil, nil))
+		})
+
+		// Simulate loss of internet connection.
+		netCtl.Disable()
+
+		// Start bridge without internet.
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Initially, users are not connected.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Empty(t, getConnectedUserIDs(t, bridge))
+
+			time.Sleep(5 * time.Second)
+
+			// Simulate internet connection.
+			netCtl.Enable()
+
+			// The user will eventually be connected.
+			require.Eventually(t, func() bool {
+				return len(getConnectedUserIDs(t, bridge)) == 1 && getConnectedUserIDs(t, bridge)[0] == userID
+			}, 10*time.Second, time.Second)
+		})
+	})
+}
+
+func TestBridge_LoginRestart(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		var userID string
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			userID = must(bridge.LoginFull(ctx, username, password, nil, nil))
+		})
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Equal(t, []string{userID}, getConnectedUserIDs(t, bridge))
+		})
+	})
+}
+
+func TestBridge_LoginLogoutRestart(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		var userID string
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Login the user.
+			userID = must(bridge.LoginFull(ctx, username, password, nil, nil))
+
+			// Logout the user.
+			require.NoError(t, bridge.LogoutUser(ctx, userID))
+		})
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// The user is still disconnected.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Empty(t, getConnectedUserIDs(t, bridge))
+		})
+	})
+}
+
+func TestBridge_LoginDeleteRestart(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		var userID string
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Login the user.
+			userID = must(bridge.LoginFull(ctx, username, password, nil, nil))
+
+			// Delete the user.
+			require.NoError(t, bridge.DeleteUser(ctx, userID))
+		})
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// The user is still gone.
+			require.Empty(t, bridge.GetUserIDs())
+			require.Empty(t, getConnectedUserIDs(t, bridge))
+		})
+	})
+}
+
+func TestBridge_FailLoginRecover(t *testing.T) {
+	for i := uint64(1); i < 10; i++ {
+		t.Run(fmt.Sprintf("read %v%% of the data", 100*i/10), func(t *testing.T) {
+			withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+				var userID string
+
+				// Log the user in, wait for it to sync, then log it out.
+				// (We don't want to count message sync data in the test.)
+				withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+					syncCh, done := chToType[events.Event, events.SyncFinished](bridge.GetEvents(events.SyncFinished{}))
+					defer done()
+
+					userID = must(bridge.LoginFull(ctx, username, password, nil, nil))
+					require.Equal(t, userID, (<-syncCh).UserID)
+					require.NoError(t, bridge.LogoutUser(ctx, userID))
+				})
+
+				var total uint64
+
+				// Now that the user is synced, we can measure exactly how much data is needed during login.
+				withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+					total = countBytesRead(netCtl, func() {
+						must(bridge.LoginFull(ctx, username, password, nil, nil))
+					})
+
+					require.NoError(t, bridge.LogoutUser(ctx, userID))
+				})
+
+				// Now simulate failing to login.
+				withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+					// Simulate a partial read.
+					netCtl.SetReadLimit(i * total / 10)
+
+					// We should fail to log the user in because we can't fully read its data.
+					require.Error(t, getErr(bridge.LoginFull(ctx, username, password, nil, nil)))
+
+					// The user should still be there (but disconnected).
+					require.Equal(t, []string{userID}, bridge.GetUserIDs())
+					require.Empty(t, getConnectedUserIDs(t, bridge))
+				})
+
+				// Simulate the network recovering.
+				netCtl.SetReadLimit(0)
+
+				// We should now be able to log the user in.
+				withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+					require.NoError(t, getErr(bridge.LoginFull(ctx, username, password, nil, nil)))
+
+					// The user should be there, now connected.
+					require.Equal(t, []string{userID}, bridge.GetUserIDs())
+					require.Equal(t, []string{userID}, getConnectedUserIDs(t, bridge))
+				})
+			})
+		})
+	}
+}
+
+func TestBridge_FailLoadRecover(t *testing.T) {
+	for i := uint64(1); i < 10; i++ {
+		t.Run(fmt.Sprintf("read %v%% of the data", 100*i/10), func(t *testing.T) {
+			withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+				var userID string
+
+				// Log the user in and wait for it to sync.
+				// (We don't want to count message sync data in the test.)
+				withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+					syncCh, done := chToType[events.Event, events.SyncFinished](bridge.GetEvents(events.SyncFinished{}))
+					defer done()
+
+					userID = must(bridge.LoginFull(ctx, username, password, nil, nil))
+					require.Equal(t, userID, (<-syncCh).UserID)
+				})
+
+				// See how much data it takes to load the user at startup.
+				total := countBytesRead(netCtl, func() {
+					withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+						// ...
+					})
+				})
+
+				// Simulate a partial read.
+				netCtl.SetReadLimit(i * total / 10)
+
+				// We should fail to load the user; it should be listed but disconnected.
+				withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+					require.Equal(t, []string{userID}, bridge.GetUserIDs())
+					require.Empty(t, getConnectedUserIDs(t, bridge))
+				})
+
+				// Simulate the network recovering.
+				netCtl.SetReadLimit(0)
+
+				// We should now be able to load the user.
+				withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+					require.Equal(t, []string{userID}, bridge.GetUserIDs())
+					require.Equal(t, []string{userID}, getConnectedUserIDs(t, bridge))
+				})
+			})
+		})
+	}
+}
+
+func TestBridge_BridgePass(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		var userID string
+
+		var pass []byte
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Login the user.
+			userID = must(bridge.LoginFull(ctx, username, password, nil, nil))
+
+			// Retrieve the bridge pass.
+			pass = must(bridge.GetUserInfo(userID)).BridgePass
+
+			// Log the user out.
+			require.NoError(t, bridge.LogoutUser(ctx, userID))
+
+			// Log the user back in.
+			must(bridge.LoginFull(ctx, username, password, nil, nil))
+
+			// The bridge pass should be the same.
+			require.Equal(t, pass, pass)
+		})
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// The bridge should load the user.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Equal(t, []string{userID}, getConnectedUserIDs(t, bridge))
+
+			// The bridge pass should be the same.
+			require.Equal(t, pass, must(bridge.GetUserInfo(userID)).BridgePass)
+		})
+	})
+}
+
+func TestBridge_AddressMode(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Login the user.
+			userID, err := bridge.LoginFull(ctx, username, password, nil, nil)
+			require.NoError(t, err)
+
+			// Get the user's info.
+			info, err := bridge.GetUserInfo(userID)
+			require.NoError(t, err)
+
+			// The user is in combined mode by default.
+			require.Equal(t, vault.CombinedMode, info.AddressMode)
+
+			// Repeatedly switch between address modes.
+			for i := 1; i <= 10; i++ {
+				var target vault.AddressMode
+
+				if i%2 == 0 {
+					target = vault.CombinedMode
+				} else {
+					target = vault.SplitMode
+				}
+
+				// Put the user in the target mode.
+				require.NoError(t, bridge.SetAddressMode(ctx, userID, target))
+
+				// Get the user's info.
+				info, err = bridge.GetUserInfo(userID)
+				require.NoError(t, err)
+
+				// The user is in the target mode.
+				require.Equal(t, target, info.AddressMode)
+			}
+		})
+	})
+}
+
+func TestBridge_LoginLogoutRepeated(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			for i := 0; i < 10; i++ {
+				// Log the user in.
+				userID := must(bridge.LoginFull(ctx, username, password, nil, nil))
+
+				// Log the user out.
+				require.NoError(t, bridge.LogoutUser(ctx, userID))
+			}
+		})
+	})
+}
+
+func TestBridge_LogoutOffline(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		var userID string
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Login the user.
+			userID = must(bridge.LoginFull(ctx, username, password, nil, nil))
+
+			// The user is now connected.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Equal(t, []string{userID}, getConnectedUserIDs(t, bridge))
+
+			// Go offline.
+			netCtl.Disable()
+
+			// We can still log the user out.
+			require.NoError(t, bridge.LogoutUser(ctx, userID))
+
+			// The user is now disconnected.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Empty(t, getConnectedUserIDs(t, bridge))
+		})
+
+		// Go back online.
+		netCtl.Enable()
+
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// The user is still disconnected.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Empty(t, getConnectedUserIDs(t, bridge))
+		})
+	})
+}
+
+func TestBridge_DeleteDisconnected(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Login the user.
+			userID, err := bridge.LoginFull(ctx, username, password, nil, nil)
+			require.NoError(t, err)
+
+			// The user is now connected.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Equal(t, []string{userID}, getConnectedUserIDs(t, bridge))
+
+			// Logout the user.
+			require.NoError(t, bridge.LogoutUser(ctx, userID))
+
+			// The user is now disconnected.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Empty(t, getConnectedUserIDs(t, bridge))
+
+			// Delete the user.
+			require.NoError(t, bridge.DeleteUser(ctx, userID))
+
+			// The user is now deleted.
+			require.Empty(t, bridge.GetUserIDs())
+			require.Empty(t, getConnectedUserIDs(t, bridge))
+		})
+	})
+}
+
+func TestBridge_DeleteOffline(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, storeKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, storeKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Login the user.
+			userID, err := bridge.LoginFull(ctx, username, password, nil, nil)
+			require.NoError(t, err)
+
+			// The user is now connected.
+			require.Equal(t, []string{userID}, bridge.GetUserIDs())
+			require.Equal(t, []string{userID}, getConnectedUserIDs(t, bridge))
+
+			// Go offline.
+			netCtl.Disable()
+
+			// We can still log the user out.
+			require.NoError(t, bridge.DeleteUser(ctx, userID))
+
+			// The user is now gone.
+			require.Empty(t, bridge.GetUserIDs())
+			require.Empty(t, getConnectedUserIDs(t, bridge))
+		})
+	})
+}
+
+func TestBridge_UserInfo_Alias(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			// Create a new user.
+			userID, _, err := s.CreateUser("primary", "primary@pm.me", []byte("password"))
+			require.NoError(t, err)
+
+			// Give the new user an alias.
+			require.NoError(t, getErr(s.CreateAddress(userID, "alias@pm.me", []byte("password"))))
+
+			// Login the user.
+			require.NoError(t, getErr(bridge.LoginFull(ctx, "primary", []byte("password"), nil, nil)))
+
+			// Get user info.
+			info, err := bridge.GetUserInfo(userID)
+			require.NoError(t, err)
+
+			// The user should have two addresses, the primary should be first.
+			require.Equal(t, []string{"primary@pm.me", "alias@pm.me"}, info.Addresses)
+		})
+	})
+}
+
+func TestBridge_User_Refresh(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			mocks.Reporter.EXPECT().ReportMessageWithContext(
+				gomock.Eq("Warning: refresh occurred"),
+				mocksPkg.NewRefreshContextMatcher(proton.RefreshAll),
+			).Return(nil)
+
+			// Get a channel of sync started events.
+			syncStartCh, done := chToType[events.Event, events.SyncStarted](bridge.GetEvents(events.SyncStarted{}))
+			defer done()
+
+			// Get a channel of sync finished events.
+			syncFinishCh, done := chToType[events.Event, events.SyncFinished](bridge.GetEvents(events.SyncFinished{}))
+			defer done()
+
+			// Log the user in.
+			userID := must(bridge.LoginFull(ctx, username, password, nil, nil))
+
+			// The sync should start and finish.
+			require.Equal(t, userID, (<-syncStartCh).UserID)
+			require.Equal(t, userID, (<-syncFinishCh).UserID)
+
+			// Trigger a refresh.
+			require.NoError(t, s.RefreshUser(userID, proton.RefreshAll))
+
+			// The sync should start and finish again.
+			require.Equal(t, userID, (<-syncStartCh).UserID)
+			require.Equal(t, userID, (<-syncFinishCh).UserID)
+		})
+	})
+}
+
+// getErr returns the error that was passed to it.
+func getErr[T any](val T, err error) error {
+	return err
+}

internal/certs/cert_store_darwin.go

@@ -15,9 +15,31 @@
 // You should have received a copy of the GNU General Public License
 // along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
 
-package tls
+package certs
 
-import "golang.org/x/sys/execabs"
+import (
+	"os"
+
+	"golang.org/x/sys/execabs"
+)
+
+func installCert(certPEM []byte) error {
+	name, err := writeToTempFile(certPEM)
+	if err != nil {
+		return err
+	}
+
+	return addTrustedCert(name)
+}
+
+func uninstallCert(certPEM []byte) error {
+	name, err := writeToTempFile(certPEM)
+	if err != nil {
+		return err
+	}
+
+	return removeTrustedCert(name)
+}
 
 func addTrustedCert(certPath string) error {
 	return execabs.Command( //nolint:gosec
@@ -44,10 +66,20 @@ func removeTrustedCert(certPath string) error {
 	).Run()
 }
 
-func (t *TLS) InstallCerts() error {
-	return addTrustedCert(t.getTLSCertPath())
-}
+// writeToTempFile writes the given data to a temporary file and returns the path.
+func writeToTempFile(data []byte) (string, error) {
+	f, err := os.CreateTemp("", "tls")
+	if err != nil {
+		return "", err
+	}
 
-func (t *TLS) UninstallCerts() error {
-	return removeTrustedCert(t.getTLSCertPath())
+	if _, err := f.Write(data); err != nil {
+		return "", err
+	}
+
+	if err := f.Close(); err != nil {
+		return "", err
+	}
+
+	return f.Name(), nil
 }

internal/certs/cert_store_linux.go

@@ -15,12 +15,12 @@
 // You should have received a copy of the GNU General Public License
 // along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
 
-package tls
+package certs
 
-func (t *TLS) InstallCerts() error {
+func installCert([]byte) error {
 	return nil // Linux doesn't have a root cert store.
 }
 
-func (t *TLS) UninstallCerts() error {
+func uninstallCert([]byte) error {
 	return nil // Linux doesn't have a root cert store.
 }

internal/certs/cert_store_windows.go

@@ -15,12 +15,12 @@
 // You should have received a copy of the GNU General Public License
 // along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
 
-package tls
+package certs
 
-func (t *TLS) InstallCerts() error {
+func installCert([]byte) error {
 	return nil // NOTE(GODT-986): Install certs to root cert store?
 }
 
-func (t *TLS) UninstallCerts() error {
+func uninstallCert([]byte) error {
 	return nil // NOTE(GODT-986): Uninstall certs from root cert store?
 }

internal/certs/installer.go

@@ -0,0 +1,32 @@
+// Copyright (c) 2022 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package certs
+
+type Installer struct{}
+
+func NewInstaller() *Installer {
+	return &Installer{}
+}
+
+func (installer *Installer) InstallCert(certPEM []byte) error {
+	return installCert(certPEM)
+}
+
+func (installer *Installer) UninstallCert(certPEM []byte) error {
+	return uninstallCert(certPEM)
+}

internal/certs/tls.go

@@ -15,9 +15,10 @@
 // You should have received a copy of the GNU General Public License
 // along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
 
-package tls
+package certs
 
 import (
+	"bytes"
 	"crypto/rand"
 	"crypto/rsa"
 	"crypto/tls"
@@ -27,22 +28,13 @@ import (
 	"fmt"
 	"math/big"
 	"net"
-	"os"
-	"path/filepath"
 	"time"
 
 	"github.com/pkg/errors"
 )
 
-type TLS struct {
-	settingsPath string
-}
-
-func New(settingsPath string) *TLS {
-	return &TLS{
-		settingsPath: settingsPath,
-	}
-}
+// ErrTLSCertExpiresSoon is returned when the TLS certificate is about to expire.
+var ErrTLSCertExpiresSoon = fmt.Errorf("TLS certificate will expire soon")
 
 // NewTLSTemplate creates a new TLS template certificate with a random serial number.
 func NewTLSTemplate() (*x509.Certificate, error) {
@@ -69,108 +61,40 @@ func NewTLSTemplate() (*x509.Certificate, error) {
 	}, nil
 }
 
-// NewPEMKeyPair return a new TLS private key and certificate in PEM encoded format.
-func NewPEMKeyPair() (pemCert, pemKey []byte, err error) {
-	template, err := NewTLSTemplate()
-	if err != nil {
-		return nil, nil, errors.Wrap(err, "failed to generate TLS template")
-	}
-
+// GenerateCert generates a new TLS certificate and returns it as PEM.
+var GenerateCert = func(template *x509.Certificate) ([]byte, []byte, error) { //nolint:gochecknoglobals
 	priv, err := rsa.GenerateKey(rand.Reader, 2048)
 	if err != nil {
 		return nil, nil, errors.Wrap(err, "failed to generate private key")
 	}
 
-	pemKey = pem.EncodeToMemory(&pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(priv)})
-
 	derBytes, err := x509.CreateCertificate(rand.Reader, template, template, &priv.PublicKey, priv)
 	if err != nil {
 		return nil, nil, errors.Wrap(err, "failed to create certificate")
 	}
 
-	pemCert = pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: derBytes})
+	certPEM := new(bytes.Buffer)
 
-	return pemCert, pemKey, nil
-}
-
-var ErrTLSCertExpiresSoon = fmt.Errorf("TLS certificate will expire soon")
-
-// getTLSCertPath returns path to certificate; used for TLS servers (IMAP, SMTP).
-func (t *TLS) getTLSCertPath() string {
-	return filepath.Join(t.settingsPath, "cert.pem")
-}
-
-// getTLSKeyPath returns path to private key; used for TLS servers (IMAP, SMTP).
-func (t *TLS) getTLSKeyPath() string {
-	return filepath.Join(t.settingsPath, "key.pem")
-}
-
-// HasCerts returns whether TLS certs have been generated.
-func (t *TLS) HasCerts() bool {
-	if _, err := os.Stat(t.getTLSCertPath()); err != nil {
-		return false
+	if err := pem.Encode(certPEM, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes}); err != nil {
+		return nil, nil, err
 	}
 
-	if _, err := os.Stat(t.getTLSKeyPath()); err != nil {
-		return false
+	keyPEM := new(bytes.Buffer)
+
+	if err := pem.Encode(keyPEM, &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(priv)}); err != nil {
+		return nil, nil, err
 	}
 
-	return true
-}
-
-// GenerateCerts generates certs from the given template.
-func (t *TLS) GenerateCerts(template *x509.Certificate) error {
-	priv, err := rsa.GenerateKey(rand.Reader, 2048)
-	if err != nil {
-		return errors.Wrap(err, "failed to generate private key")
-	}
-
-	derBytes, err := x509.CreateCertificate(rand.Reader, template, template, &priv.PublicKey, priv)
-	if err != nil {
-		return errors.Wrap(err, "failed to create certificate")
-	}
-
-	certOut, err := os.Create(t.getTLSCertPath())
-	if err != nil {
-		return err
-	}
-	defer certOut.Close() //nolint:errcheck,gosec
-
-	if err := pem.Encode(certOut, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes}); err != nil {
-		return err
-	}
-
-	keyOut, err := os.OpenFile(t.getTLSKeyPath(), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0o600)
-	if err != nil {
-		return err
-	}
-	defer keyOut.Close() //nolint:errcheck,gosec
-
-	return pem.Encode(keyOut, &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(priv)})
+	return certPEM.Bytes(), keyPEM.Bytes(), nil
 }
 
 // GetConfig tries to load TLS config or generate new one which is then returned.
-func (t *TLS) GetConfig() (*tls.Config, error) {
-	c, err := tls.LoadX509KeyPair(t.getTLSCertPath(), t.getTLSKeyPath())
+func GetConfig(certPEM, keyPEM []byte) (*tls.Config, error) {
+	c, err := tls.X509KeyPair(certPEM, keyPEM)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to load keypair")
 	}
 
-	return getConfigFromKeyPair(c)
-}
-
-// GetConfigFromPEMKeyPair load a TLS config from PEM encoded certificate and key.
-func GetConfigFromPEMKeyPair(permCert, pemKey []byte) (*tls.Config, error) {
-	c, err := tls.X509KeyPair(permCert, pemKey)
-	if err != nil {
-		return nil, errors.Wrap(err, "failed to load keypair")
-	}
-
-	return getConfigFromKeyPair(c)
-}
-
-func getConfigFromKeyPair(c tls.Certificate) (*tls.Config, error) {
-	var err error
 	c.Leaf, err = x509.ParseCertificate(c.Certificate[0])
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to parse certificate")

internal/certs/tls_test.go

@@ -15,10 +15,10 @@
 // You should have received a copy of the GNU General Public License
 // along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
 
-package tls
+package certs
 
 import (
-	"os"
+	"crypto/tls"
 	"testing"
 	"time"
 
@@ -26,12 +26,6 @@ import (
 )
 
 func TestGetOldConfig(t *testing.T) {
-	dir, err := os.MkdirTemp("", "test-tls")
-	require.NoError(t, err)
-
-	// Create new tls object.
-	tls := New(dir)
-
 	// Create new TLS template.
 	tlsTemplate, err := NewTLSTemplate()
 	require.NoError(t, err)
@@ -41,20 +35,15 @@ func TestGetOldConfig(t *testing.T) {
 	tlsTemplate.NotAfter = time.Now()
 
 	// Generate the certs from the template.
-	require.NoError(t, tls.GenerateCerts(tlsTemplate))
+	certPEM, keyPEM, err := GenerateCert(tlsTemplate)
+	require.NoError(t, err)
 
 	// Generate the config from the certs -- it's going to expire soon so we don't want to use it.
-	_, err = tls.GetConfig()
+	_, err = GetConfig(certPEM, keyPEM)
 	require.Equal(t, err, ErrTLSCertExpiresSoon)
 }
 
 func TestGetValidConfig(t *testing.T) {
-	dir, err := os.MkdirTemp("", "test-tls")
-	require.NoError(t, err)
-
-	// Create new tls object.
-	tls := New(dir)
-
 	// Create new TLS template.
 	tlsTemplate, err := NewTLSTemplate()
 	require.NoError(t, err)
@@ -64,10 +53,11 @@ func TestGetValidConfig(t *testing.T) {
 	tlsTemplate.NotAfter = time.Now().Add(2 * 365 * 24 * time.Hour)
 
 	// Generate the certs from the template.
-	require.NoError(t, tls.GenerateCerts(tlsTemplate))
+	certPEM, keyPEM, err := GenerateCert(tlsTemplate)
+	require.NoError(t, err)
 
 	// Generate the config from the certs -- it's not going to expire soon so we want to use it.
-	config, err := tls.GetConfig()
+	config, err := GetConfig(certPEM, keyPEM)
 	require.NoError(t, err)
 	require.Equal(t, len(config.Certificates), 1)
 
@@ -77,9 +67,13 @@ func TestGetValidConfig(t *testing.T) {
 }
 
 func TestNewConfig(t *testing.T) {
-	pemCert, pemKey, err := NewPEMKeyPair()
+	tlsTemplate, err := NewTLSTemplate()
 	require.NoError(t, err)
 
-	_, err = GetConfigFromPEMKeyPair(pemCert, pemKey)
+	pemCert, pemKey, err := GenerateCert(tlsTemplate)
 	require.NoError(t, err)
+
+	cert, err := tls.X509KeyPair(pemCert, pemKey)
+	require.NoError(t, err)
+	require.NotNil(t, cert)
 }

internal/clientconfig/applemail.go

@@ -23,8 +23,8 @@ import (
 	"strconv"
 	"time"
 
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/useragent"
-	"github.com/ProtonMail/proton-bridge/v2/pkg/mobileconfig"
+	"github.com/ProtonMail/proton-bridge/v3/internal/useragent"
+	"github.com/ProtonMail/proton-bridge/v3/pkg/mobileconfig"
 	"golang.org/x/sys/execabs"
 )
 
@@ -39,7 +39,8 @@ func (c *AppleMail) Configure(
 	hostname string,
 	imapPort, smtpPort int,
 	imapSSL, smtpSSL bool,
-	username, addresses, password string,
+	username, addresses string,
+	password []byte,
 ) error {
 	mc := prepareMobileConfig(hostname, imapPort, smtpPort, imapSSL, smtpSSL, username, addresses, password)
 
@@ -65,7 +66,8 @@ func prepareMobileConfig(
 	hostname string,
 	imapPort, smtpPort int,
 	imapSSL, smtpSSL bool,
-	username, addresses, password string,
+	username, addresses string,
+	password []byte,
 ) *mobileconfig.Config {
 	return &mobileconfig.Config{
 		DisplayName:  username,
@@ -76,13 +78,14 @@ func prepareMobileConfig(
 			Port:     imapPort,
 			TLS:      imapSSL,
 			Username: username,
-			Password: password,
+			Password: string(password),
 		},
 		SMTP: &mobileconfig.SMTP{
 			Hostname: hostname,
 			Port:     smtpPort,
 			TLS:      smtpSSL,
 			Username: username,
+			Password: string(password),
 		},
 	}
 }

internal/config/cache/cache.go

@@ -1,70 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-// Package cache provides access to contents inside a cache directory.
-package cache
-
-import (
-	"os"
-	"path/filepath"
-
-	"github.com/ProtonMail/proton-bridge/v2/pkg/files"
-)
-
-type Cache struct {
-	dir, version string
-}
-
-func New(dir, version string) (*Cache, error) {
-	if err := os.MkdirAll(filepath.Join(dir, version), 0o700); err != nil {
-		return nil, err
-	}
-
-	return &Cache{
-		dir:     dir,
-		version: version,
-	}, nil
-}
-
-// GetDBDir returns folder for db files.
-func (c *Cache) GetDBDir() string {
-	return c.getCurrentCacheDir()
-}
-
-// GetDefaultMessageCacheDir returns folder for cached messages files.
-func (c *Cache) GetDefaultMessageCacheDir() string {
-	return filepath.Join(c.getCurrentCacheDir(), "messages")
-}
-
-// GetIMAPCachePath returns path to file with IMAP status.
-func (c *Cache) GetIMAPCachePath() string {
-	return filepath.Join(c.getCurrentCacheDir(), "user_info.json")
-}
-
-// GetTransferDir returns folder for import-export rules files.
-func (c *Cache) GetTransferDir() string {
-	return c.getCurrentCacheDir()
-}
-
-// RemoveOldVersions removes any cache dirs that are not the current version.
-func (c *Cache) RemoveOldVersions() error {
-	return files.Remove(c.dir).Except(c.getCurrentCacheDir()).Do()
-}
-
-func (c *Cache) getCurrentCacheDir() string {
-	return filepath.Join(c.dir, c.version)
-}

internal/config/cache/cache_test.go

@@ -1,69 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-package cache
-
-import (
-	"os"
-	"path/filepath"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func TestRemoveOldVersions(t *testing.T) {
-	dir, err := os.MkdirTemp("", "test-cache")
-	require.NoError(t, err)
-
-	cache, err := New(dir, "c4")
-	require.NoError(t, err)
-
-	createFilesInDir(t, dir,
-		"unexpected1.txt",
-		"c1/unexpected1.txt",
-		"c2/unexpected2.txt",
-		"c3/unexpected3.txt",
-		"something.txt",
-	)
-
-	require.DirExists(t, filepath.Join(dir, "c4"))
-	require.FileExists(t, filepath.Join(dir, "unexpected1.txt"))
-	require.FileExists(t, filepath.Join(dir, "c1", "unexpected1.txt"))
-	require.FileExists(t, filepath.Join(dir, "c2", "unexpected2.txt"))
-	require.FileExists(t, filepath.Join(dir, "c3", "unexpected3.txt"))
-	require.FileExists(t, filepath.Join(dir, "something.txt"))
-
-	assert.NoError(t, cache.RemoveOldVersions())
-
-	assert.DirExists(t, filepath.Join(dir, "c4"))
-	assert.NoFileExists(t, filepath.Join(dir, "unexpected1.txt"))
-	assert.NoFileExists(t, filepath.Join(dir, "c1", "unexpected1.txt"))
-	assert.NoFileExists(t, filepath.Join(dir, "c2", "unexpected2.txt"))
-	assert.NoFileExists(t, filepath.Join(dir, "c3", "unexpected3.txt"))
-	assert.NoFileExists(t, filepath.Join(dir, "something.txt"))
-}
-
-func createFilesInDir(t *testing.T, dir string, files ...string) {
-	for _, target := range files {
-		require.NoError(t, os.MkdirAll(filepath.Dir(filepath.Join(dir, target)), 0o700))
-
-		f, err := os.Create(filepath.Join(dir, target))
-		require.NoError(t, err)
-		require.NoError(t, f.Close())
-	}
-}

internal/config/settings/kvs.go

@@ -1,151 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-package settings
-
-import (
-	"encoding/json"
-	"errors"
-	"fmt"
-	"os"
-	"strconv"
-	"sync"
-
-	"github.com/sirupsen/logrus"
-)
-
-type keyValueStore struct {
-	vals map[Key]string
-	path string
-	lock *sync.RWMutex
-}
-
-// newKeyValueStore returns loaded preferences.
-func newKeyValueStore(path string) *keyValueStore {
-	p := &keyValueStore{
-		path: path,
-		lock: &sync.RWMutex{},
-	}
-	if err := p.load(); err != nil {
-		logrus.WithError(err).Warn("Cannot load preferences file, creating new one")
-	}
-	return p
-}
-
-func (p *keyValueStore) load() error {
-	if p.vals != nil {
-		return nil
-	}
-
-	p.lock.Lock()
-	defer p.lock.Unlock()
-
-	p.vals = make(map[Key]string)
-
-	f, err := os.Open(p.path)
-	if err != nil {
-		return err
-	}
-	defer f.Close() //nolint:errcheck,gosec
-
-	return json.NewDecoder(f).Decode(&p.vals)
-}
-
-func (p *keyValueStore) save() error {
-	if p.vals == nil {
-		return errors.New("cannot save preferences: cache is nil")
-	}
-
-	p.lock.Lock()
-	defer p.lock.Unlock()
-
-	b, err := json.MarshalIndent(p.vals, "", "\t")
-	if err != nil {
-		return err
-	}
-
-	return os.WriteFile(p.path, b, 0o600)
-}
-
-func (p *keyValueStore) setDefault(key Key, value string) {
-	if p.Get(key) == "" {
-		p.Set(key, value)
-	}
-}
-
-func (p *keyValueStore) Get(key Key) string {
-	p.lock.RLock()
-	defer p.lock.RUnlock()
-
-	return p.vals[key]
-}
-
-func (p *keyValueStore) GetBool(key Key) bool {
-	return p.Get(key) == "true"
-}
-
-func (p *keyValueStore) GetInt(key Key) int {
-	if p.Get(key) == "" {
-		return 0
-	}
-
-	value, err := strconv.Atoi(p.Get(key))
-	if err != nil {
-		logrus.WithError(err).Error("Cannot parse int")
-	}
-
-	return value
-}
-
-func (p *keyValueStore) GetFloat64(key Key) float64 {
-	if p.Get(key) == "" {
-		return 0
-	}
-
-	value, err := strconv.ParseFloat(p.Get(key), 64)
-	if err != nil {
-		logrus.WithError(err).Error("Cannot parse float64")
-	}
-
-	return value
-}
-
-func (p *keyValueStore) Set(key Key, value string) {
-	p.lock.Lock()
-	p.vals[key] = value
-	p.lock.Unlock()
-
-	if err := p.save(); err != nil {
-		logrus.WithError(err).Warn("Cannot save preferences")
-	}
-}
-
-func (p *keyValueStore) SetBool(key Key, value bool) {
-	if value {
-		p.Set(key, "true")
-	} else {
-		p.Set(key, "false")
-	}
-}
-
-func (p *keyValueStore) SetInt(key Key, value int) {
-	p.Set(key, strconv.Itoa(value))
-}
-
-func (p *keyValueStore) SetFloat64(key Key, value float64) {
-	p.Set(key, fmt.Sprintf("%v", value))
-}

internal/config/settings/kvs_test.go

@@ -1,141 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-package settings
-
-import (
-	"os"
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestLoadNoKeyValueStore(t *testing.T) {
-	r := require.New(t)
-	pref, clean := newTestEmptyKeyValueStore(r)
-	defer clean()
-
-	r.Equal("", pref.Get("key"))
-}
-
-func TestLoadBadKeyValueStore(t *testing.T) {
-	r := require.New(t)
-	path, clean := newTmpFile(r)
-	defer clean()
-
-	r.NoError(os.WriteFile(path, []byte("{\"key\":\"MISSING_QUOTES"), 0o700))
-	pref := newKeyValueStore(path)
-	r.Equal("", pref.Get("key"))
-}
-
-func TestKeyValueStor(t *testing.T) {
-	r := require.New(t)
-	pref, clean := newTestKeyValueStore(r)
-	defer clean()
-
-	r.Equal("value", pref.Get("str"))
-	r.Equal("42", pref.Get("int"))
-	r.Equal("true", pref.Get("bool"))
-	r.Equal("t", pref.Get("falseBool"))
-}
-
-func TestKeyValueStoreGetInt(t *testing.T) {
-	r := require.New(t)
-	pref, clean := newTestKeyValueStore(r)
-	defer clean()
-
-	r.Equal(0, pref.GetInt("str"))
-	r.Equal(42, pref.GetInt("int"))
-	r.Equal(0, pref.GetInt("bool"))
-	r.Equal(0, pref.GetInt("falseBool"))
-}
-
-func TestKeyValueStoreGetBool(t *testing.T) {
-	r := require.New(t)
-	pref, clean := newTestKeyValueStore(r)
-	defer clean()
-
-	r.Equal(false, pref.GetBool("str"))
-	r.Equal(false, pref.GetBool("int"))
-	r.Equal(true, pref.GetBool("bool"))
-	r.Equal(false, pref.GetBool("falseBool"))
-}
-
-func TestKeyValueStoreSetDefault(t *testing.T) {
-	r := require.New(t)
-	pref, clean := newTestEmptyKeyValueStore(r)
-	defer clean()
-
-	pref.setDefault("key", "value")
-	pref.setDefault("key", "othervalue")
-	r.Equal("value", pref.Get("key"))
-}
-
-func TestKeyValueStoreSet(t *testing.T) {
-	r := require.New(t)
-	pref, clean := newTestEmptyKeyValueStore(r)
-	defer clean()
-
-	pref.Set("str", "value")
-	checkSavedKeyValueStore(r, pref.path, "{\n\t\"str\": \"value\"\n}")
-}
-
-func TestKeyValueStoreSetInt(t *testing.T) {
-	r := require.New(t)
-	pref, clean := newTestEmptyKeyValueStore(r)
-	defer clean()
-
-	pref.SetInt("int", 42)
-	checkSavedKeyValueStore(r, pref.path, "{\n\t\"int\": \"42\"\n}")
-}
-
-func TestKeyValueStoreSetBool(t *testing.T) {
-	r := require.New(t)
-	pref, clean := newTestEmptyKeyValueStore(r)
-	defer clean()
-
-	pref.SetBool("trueBool", true)
-	pref.SetBool("falseBool", false)
-	checkSavedKeyValueStore(r, pref.path, "{\n\t\"falseBool\": \"false\",\n\t\"trueBool\": \"true\"\n}")
-}
-
-func newTmpFile(r *require.Assertions) (path string, clean func()) {
-	tmpfile, err := os.CreateTemp("", "pref.*.json")
-	r.NoError(err)
-	defer r.NoError(tmpfile.Close())
-
-	return tmpfile.Name(), func() {
-		r.NoError(os.Remove(tmpfile.Name()))
-	}
-}
-
-func newTestEmptyKeyValueStore(r *require.Assertions) (*keyValueStore, func()) {
-	path, clean := newTmpFile(r)
-	return newKeyValueStore(path), clean
-}
-
-func newTestKeyValueStore(r *require.Assertions) (*keyValueStore, func()) {
-	path, clean := newTmpFile(r)
-	r.NoError(os.WriteFile(path, []byte("{\"str\":\"value\",\"int\":\"42\",\"bool\":\"true\",\"falseBool\":\"t\"}"), 0o700))
-	return newKeyValueStore(path), clean
-}
-
-func checkSavedKeyValueStore(r *require.Assertions, path, expected string) {
-	data, err := os.ReadFile(path)
-	r.NoError(err)
-	r.Equal(expected, string(data))
-}

internal/config/settings/settings.go

@@ -1,116 +0,0 @@
-// Copyright (c) 2022 Proton AG
-//
-// This file is part of Proton Mail Bridge.
-//
-// Proton Mail Bridge is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Proton Mail Bridge is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
-
-// Package settings provides access to persistent user settings.
-package settings
-
-import (
-	"fmt"
-	"math/rand"
-	"path/filepath"
-	"time"
-)
-
-type Key string
-
-// Keys of preferences in JSON file.
-const (
-	FirstStartKey          Key = "first_time_start"
-	FirstStartGUIKey       Key = "first_time_start_gui"
-	LastHeartbeatKey       Key = "last_heartbeat"
-	APIPortKey             Key = "user_port_api"
-	IMAPPortKey            Key = "user_port_imap"
-	SMTPPortKey            Key = "user_port_smtp"
-	SMTPSSLKey             Key = "user_ssl_smtp"
-	AllowProxyKey          Key = "allow_proxy"
-	AutostartKey           Key = "autostart"
-	AutoUpdateKey          Key = "autoupdate"
-	CookiesKey             Key = "cookies"
-	LastVersionKey         Key = "last_used_version"
-	UpdateChannelKey       Key = "update_channel"
-	RolloutKey             Key = "rollout"
-	PreferredKeychainKey   Key = "preferred_keychain"
-	CacheEnabledKey        Key = "cache_enabled"
-	CacheCompressionKey    Key = "cache_compression"
-	CacheLocationKey       Key = "cache_location"
-	CacheMinFreeAbsKey     Key = "cache_min_free_abs"
-	CacheMinFreeRatKey     Key = "cache_min_free_rat"
-	CacheConcurrencyRead   Key = "cache_concurrent_read"
-	CacheConcurrencyWrite  Key = "cache_concurrent_write"
-	IMAPWorkers            Key = "imap_workers"
-	FetchWorkers           Key = "fetch_workers"
-	AttachmentWorkers      Key = "attachment_workers"
-	ColorScheme            Key = "color_scheme"
-	RebrandingMigrationKey Key = "rebranding_migrated"
-	IsAllMailVisible       Key = "is_all_mail_visible"
-)
-
-type Settings struct {
-	*keyValueStore
-
-	settingsPath string
-}
-
-func New(settingsPath string) *Settings {
-	s := &Settings{
-		keyValueStore: newKeyValueStore(filepath.Join(settingsPath, "prefs.json")),
-		settingsPath:  settingsPath,
-	}
-
-	s.setDefaultValues()
-
-	return s
-}
-
-const (
-	DefaultIMAPPort = "1143"
-	DefaultSMTPPort = "1025"
-	DefaultAPIPort  = "1042"
-)
-
-func (s *Settings) setDefaultValues() {
-	s.setDefault(FirstStartKey, "true")
-	s.setDefault(FirstStartGUIKey, "true")
-	s.setDefault(LastHeartbeatKey, fmt.Sprintf("%v", time.Now().YearDay()))
-	s.setDefault(AllowProxyKey, "true")
-	s.setDefault(AutostartKey, "true")
-	s.setDefault(AutoUpdateKey, "true")
-	s.setDefault(LastVersionKey, "")
-	s.setDefault(UpdateChannelKey, "")
-	s.setDefault(RolloutKey, fmt.Sprintf("%v", rand.Float64())) //nolint:gosec // G404 It is OK to use weak random number generator here
-	s.setDefault(PreferredKeychainKey, "")
-	s.setDefault(CacheEnabledKey, "true")
-	s.setDefault(CacheCompressionKey, "true")
-	s.setDefault(CacheLocationKey, "")
-	s.setDefault(CacheMinFreeAbsKey, "250000000")
-	s.setDefault(CacheMinFreeRatKey, "")
-	s.setDefault(CacheConcurrencyRead, "16")
-	s.setDefault(CacheConcurrencyWrite, "16")
-	s.setDefault(IMAPWorkers, "16")
-	s.setDefault(FetchWorkers, "16")
-	s.setDefault(AttachmentWorkers, "16")
-	s.setDefault(ColorScheme, "")
-
-	s.setDefault(APIPortKey, DefaultAPIPort)
-	s.setDefault(IMAPPortKey, DefaultIMAPPort)
-	s.setDefault(SMTPPortKey, DefaultSMTPPort)
-
-	// By default, stick to STARTTLS. If the user uses catalina+applemail they'll have to change to SSL.
-	s.setDefault(SMTPSSLKey, "false")
-
-	s.setDefault(IsAllMailVisible, "true")
-}

internal/constants/constants.go

@@ -18,17 +18,20 @@
 // Package constants contains variables that are set via ldflags during build.
 package constants
 
-import "fmt"
+import (
+	"fmt"
+	"runtime"
+)
 
 const VendorName = "protonmail"
 
 //nolint:gochecknoglobals
 var (
-	// Version of the build.
+	// FullAppName is the full app name (to show to the user).
 	FullAppName = ""
 
 	// Version of the build.
-	Version = ""
+	Version = "0.0.0"
 
 	// Revision is current hash of the build.
 	Revision = ""
@@ -36,9 +39,43 @@ var (
 	// BuildTime stamp of the build.
 	BuildTime = ""
 
-	// DSNSentry client keys to be able to report crashes to Sentry.
-	DSNSentry = ""
-
 	// BuildVersion is derived from LongVersion and BuildTime.
 	BuildVersion = fmt.Sprintf("%v (%v) %v", Version, Revision, BuildTime)
+
+	// DSNSentry client keys to be able to report crashes to Sentry.
+	DSNSentry = ""
 )
+
+const (
+	// AppName is the name of the product appearing in the request headers.
+	AppName = "bridge"
+
+	// UpdateName is the name of the product appearing in the update URL.
+	UpdateName = "bridge"
+
+	// ConfigName determines the name of the location where bridge stores config/cache files.
+	ConfigName = "bridge-v3"
+
+	// KeyChainName is the name of the entry in the OS keychain.
+	KeyChainName = "bridge-v3"
+
+	// Host is the hostname of the bridge server.
+	Host = "127.0.0.1"
+)
+
+// nolint:goconst
+func getAPIOS() string {
+	switch runtime.GOOS {
+	case "darwin":
+		return "macos"
+
+	case "linux":
+		return "linux"
+
+	case "windows":
+		return "windows"
+
+	default:
+		return "linux"
+	}
+}

internal/constants/host_default.go

@@ -16,8 +16,8 @@
 // along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
 
 //go:build !build_qa
-// +build !build_qa
 
-package smtp
+package constants
 
-func dumpMessageData([]byte, string) {}
+// APIHost is our API address.
+const APIHost = "https://mail-api.proton.me"

internal/constants/host_qa.go

@@ -15,11 +15,17 @@
 // You should have received a copy of the GNU General Public License
 // along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
 
-//go:build imaptest
-// +build imaptest
+//go:build build_qa
 
-package credentials
+package constants
 
-func generatePassword() string {
-	return "abcdefgh12345678"
+import "os"
+
+// APIHost is our API address.
+var APIHost = "https://mail-api.proton.me"
+
+func init() {
+	if apiHost := os.Getenv("BRIDGE_HOST_URL"); apiHost != "" {
+		APIHost = apiHost
+	}
 }

internal/constants/update_default.go

@@ -22,8 +22,5 @@ package constants
 
 import "time"
 
-//nolint:gochecknoglobals
-var (
-	// UpdateCheckInterval defines how often we check for new version.
-	UpdateCheckInterval = time.Hour //nolint:gochecknoglobals
-)
+// UpdateCheckInterval defines how often we check for new version.
+const UpdateCheckInterval = time.Hour

internal/constants/update_qa.go

@@ -22,8 +22,5 @@ package constants
 
 import "time"
 
-//nolint:gochecknoglobals
-var (
-	// UpdateCheckInterval defines how often we check for new version
-	UpdateCheckInterval = time.Duration(5 * time.Minute)
-)
+// UpdateCheckInterval defines how often we check for new version
+const UpdateCheckInterval = time.Duration(5 * time.Minute)

internal/constants/version_default.go

@@ -15,17 +15,14 @@
 // You should have received a copy of the GNU General Public License
 // along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
 
-package fakeapi
+//go:build !build_qa
+// +build !build_qa
+
+package constants
 
 import "fmt"
 
-type idGenerator int
-
-func (g *idGenerator) last(prefix string) string {
-	return fmt.Sprintf("%s%d", prefix, *g)
-}
-
-func (g *idGenerator) next(prefix string) string {
-	(*g)++
-	return fmt.Sprintf("%s%d", prefix, *g)
+// AppVersion returns the full rendered version of the app (to be used in request headers).
+func AppVersion(version string) string {
+	return fmt.Sprintf("%v-%v@%v", getAPIOS(), AppName, version)
 }

internal/constants/version_qa.go

@@ -15,18 +15,20 @@
 // You should have received a copy of the GNU General Public License
 // along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
 
-//go:build windows
-// +build windows
+//go:build build_qa
+// +build build_qa
 
-package base
+package constants
 
 import (
-	"os"
+	"fmt"
 
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/settings"
-	"github.com/allan-simon/go-singleinstance"
+	"github.com/Masterminds/semver/v3"
 )
 
-func checkSingleInstance(lockFilePath string, _ *settings.Settings) (*os.File, error) {
-	return singleinstance.CreateLockFile(lockFilePath)
+// AppVersion returns the full rendered version of the app (to be used in request headers).
+func AppVersion(version string) string {
+	ver, _ := semver.MustParse(version).SetPrerelease("dev")
+
+	return fmt.Sprintf("%v-%v@%v", getAPIOS(), AppName, ver.String())
 }

internal/constants/version_test.go

@@ -15,19 +15,23 @@
 // You should have received a copy of the GNU General Public License
 // along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
 
-package context
+package constants
 
 import (
+	"testing"
+
 	"github.com/Masterminds/semver/v3"
+	"github.com/stretchr/testify/require"
 )
 
-type fakeVersioner struct{}
+func TestPrereleaseSemver(t *testing.T) {
+	ver, err := semver.MustParse("2.3.0+qa").SetPrerelease("dev")
+	require.NoError(t, err)
 
-// newFakeVersioner creates an empty versioner just to fulfill Bridge dependencies.
-func newFakeVersioner() *fakeVersioner {
-	return &fakeVersioner{}
-}
+	require.Equal(t, "2.3.0-dev+qa", ver.String())
 
-func (c *fakeVersioner) RemoveOtherVersions(_ *semver.Version) error {
-	return nil
+	ver, err = semver.MustParse("2.3.0-dev+qa").SetPrerelease("dev")
+	require.NoError(t, err)
+
+	require.Equal(t, "2.3.0-dev+qa", ver.String())
 }

internal/cookies/jar.go

@@ -22,32 +22,30 @@ import (
 	"encoding/json"
 	"fmt"
 	"net/http"
-	"net/http/cookiejar"
 	"net/url"
 	"sync"
 	"time"
-
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/settings"
 )
 
 type cookiesByHost map[string][]*http.Cookie
 
+type Persister interface {
+	GetCookies() ([]byte, error)
+	SetCookies([]byte) error
+}
+
 // Jar implements http.CookieJar by wrapping the standard library's cookiejar.Jar.
 // The jar uses a pantry to load cookies at startup and save cookies when set.
 type Jar struct {
-	jar      *cookiejar.Jar
-	settings *settings.Settings
-	cookies  cookiesByHost
-	locker   sync.Locker
+	jar http.CookieJar
+
+	persister Persister
+	cookies   cookiesByHost
+	locker    sync.RWMutex
 }
 
-func NewCookieJar(s *settings.Settings) (*Jar, error) {
-	jar, err := cookiejar.New(nil)
-	if err != nil {
-		return nil, err
-	}
-
-	cookiesByHost, err := loadCookies(s)
+func NewCookieJar(jar http.CookieJar, persister Persister) (*Jar, error) {
+	cookiesByHost, err := loadCookies(persister)
 	if err != nil {
 		return nil, err
 	}
@@ -62,10 +60,10 @@ func NewCookieJar(s *settings.Settings) (*Jar, error) {
 	}
 
 	return &Jar{
-		jar:      jar,
-		settings: s,
-		cookies:  cookiesByHost,
-		locker:   &sync.Mutex{},
+		jar: jar,
+
+		persister: persister,
+		cookies:   cookiesByHost,
 	}, nil
 }
 
@@ -85,38 +83,39 @@ func (j *Jar) SetCookies(u *url.URL, cookies []*http.Cookie) {
 }
 
 func (j *Jar) Cookies(u *url.URL) []*http.Cookie {
-	j.locker.Lock()
-	defer j.locker.Unlock()
+	j.locker.RLock()
+	defer j.locker.RUnlock()
 
 	return j.jar.Cookies(u)
 }
 
 // PersistCookies persists the cookies to disk.
 func (j *Jar) PersistCookies() error {
-	j.locker.Lock()
-	defer j.locker.Unlock()
+	j.locker.RLock()
+	defer j.locker.RUnlock()
 
 	rawCookies, err := json.Marshal(j.cookies)
 	if err != nil {
 		return err
 	}
 
-	j.settings.Set(settings.CookiesKey, string(rawCookies))
-
-	return nil
+	return j.persister.SetCookies(rawCookies)
 }
 
 // loadCookies loads all non-expired cookies from disk.
-func loadCookies(s *settings.Settings) (cookiesByHost, error) {
-	rawCookies := s.Get(settings.CookiesKey)
+func loadCookies(persister Persister) (cookiesByHost, error) {
+	rawCookies, err := persister.GetCookies()
+	if err != nil {
+		return nil, err
+	}
 
-	if rawCookies == "" {
+	if len(rawCookies) == 0 {
 		return make(cookiesByHost), nil
 	}
 
 	var cookiesByHost cookiesByHost
 
-	if err := json.Unmarshal([]byte(rawCookies), &cookiesByHost); err != nil {
+	if err := json.Unmarshal(rawCookies, &cookiesByHost); err != nil {
 		return nil, err
 	}
 

internal/cookies/jar_test.go

@@ -18,13 +18,16 @@
 package cookies
 
 import (
+	"errors"
+	"io/fs"
 	"net/http"
+	"net/http/cookiejar"
 	"net/http/httptest"
 	"os"
+	"path/filepath"
 	"testing"
 	"time"
 
-	"github.com/ProtonMail/proton-bridge/v2/internal/config/settings"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -37,7 +40,7 @@ func TestJarGetSet(t *testing.T) {
 	})
 	defer ts.Close()
 
-	client, _ := getClientWithJar(t, newFakeSettings())
+	client, _ := getClientWithJar(t, newTestPersister(t))
 
 	// Hit a server that sets some cookies.
 	setRes, err := client.Get(ts.URL + "/set")
@@ -63,7 +66,7 @@ func TestJarLoad(t *testing.T) {
 	defer ts.Close()
 
 	// This will be our "persistent storage" from which the cookie jar should load cookies.
-	s := newFakeSettings()
+	s := newTestPersister(t)
 
 	// This client saves cookies to persistent storage.
 	oldClient, jar := getClientWithJar(t, s)
@@ -98,7 +101,7 @@ func TestJarExpiry(t *testing.T) {
 	defer ts.Close()
 
 	// This will be our "persistent storage" from which the cookie jar should load cookies.
-	s := newFakeSettings()
+	s := newTestPersister(t)
 
 	// This client saves cookies to persistent storage.
 	oldClient, jar1 := getClientWithJar(t, s)
@@ -122,9 +125,12 @@ func TestJarExpiry(t *testing.T) {
 	// Save the cookies (expired ones were cleared out).
 	require.NoError(t, jar2.PersistCookies())
 
-	assert.Contains(t, s.Get(settings.CookiesKey), "TestName1")
-	assert.NotContains(t, s.Get(settings.CookiesKey), "TestName2")
-	assert.Contains(t, s.Get(settings.CookiesKey), "TestName3")
+	cookies, err := s.GetCookies()
+	require.NoError(t, err)
+
+	assert.Contains(t, string(cookies), "TestName1")
+	assert.NotContains(t, string(cookies), "TestName2")
+	assert.Contains(t, string(cookies), "TestName3")
 }
 
 type testCookie struct {
@@ -132,11 +138,14 @@ type testCookie struct {
 	maxAge      int
 }
 
-func getClientWithJar(t *testing.T, s *settings.Settings) (*http.Client, *Jar) {
-	jar, err := NewCookieJar(s)
+func getClientWithJar(t *testing.T, persister Persister) (*http.Client, *Jar) {
+	jar, err := cookiejar.New(nil)
 	require.NoError(t, err)
 
-	return &http.Client{Jar: jar}, jar
+	wrapper, err := NewCookieJar(jar, persister)
+	require.NoError(t, err)
+
+	return &http.Client{Jar: wrapper}, wrapper
 }
 
 func getTestServer(t *testing.T, wantCookies []testCookie) *httptest.Server {
@@ -168,12 +177,26 @@ func getTestServer(t *testing.T, wantCookies []testCookie) *httptest.Server {
 	return httptest.NewServer(mux)
 }
 
-// newFakeSettings creates a temporary folder for files.
-func newFakeSettings() *settings.Settings {
-	dir, err := os.MkdirTemp("", "test-settings")
-	if err != nil {
-		panic(err)
+type testPersister struct {
+	path string
+}
+
+func newTestPersister(tb testing.TB) *testPersister {
+	path := filepath.Join(tb.TempDir(), "cookies.json")
+
+	if _, err := os.Stat(path); errors.Is(err, fs.ErrNotExist) {
+		if err := os.WriteFile(path, []byte{}, 0o600); err != nil {
+			panic(err)
+		}
 	}
 
-	return settings.New(dir)
+	return &testPersister{path: path}
+}
+
+func (p *testPersister) GetCookies() ([]byte, error) {
+	return os.ReadFile(p.path)
+}
+
+func (p *testPersister) SetCookies(rawCookies []byte) error {
+	return os.WriteFile(p.path, rawCookies, 0o600)
 }

internal/crash/handler.go

@@ -19,7 +19,7 @@
 package crash
 
 import (
-	"github.com/ProtonMail/proton-bridge/v2/internal/sentry"
+	"github.com/ProtonMail/proton-bridge/v3/internal/sentry"
 	"github.com/sirupsen/logrus"
 )
 
@@ -41,14 +41,11 @@ func (h *Handler) AddRecoveryAction(action RecoveryAction) *Handler {
 func (h *Handler) HandlePanic() {
 	sentry.SkipDuringUnwind()
 
-	r := recover()
-	if r == nil {
-		return
-	}
-
-	for _, action := range h.actions {
-		if err := action(r); err != nil {
-			logrus.WithError(err).Error("Failed to execute recovery action")
+	if r := recover(); r != nil {
+		for _, action := range h.actions {
+			if err := action(r); err != nil {
+				logrus.WithError(err).Error("Failed to execute recovery action")
+			}
 		}
 	}
 }

internal/dialer/dialer_basic.go

@@ -15,9 +15,10 @@
 // You should have received a copy of the GNU General Public License
 // along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
 
-package pmapi
+package dialer
 
 import (
+	"context"
 	"crypto/tls"
 	"net"
 	"net/http"
@@ -25,13 +26,13 @@ import (
 )
 
 type TLSDialer interface {
-	DialTLS(network, address string) (conn net.Conn, err error)
+	DialTLSContext(ctx context.Context, network, address string) (conn net.Conn, err error)
 }
 
 // CreateTransportWithDialer creates an http.Transport that uses the given dialer to make TLS connections.
 func CreateTransportWithDialer(dialer TLSDialer) *http.Transport {
 	return &http.Transport{
-		DialTLS: dialer.DialTLS,
+		DialTLSContext: dialer.DialTLSContext,
 
 		Proxy:               http.ProxyFromEnvironment,
 		MaxIdleConns:        100,
@@ -53,26 +54,24 @@ func CreateTransportWithDialer(dialer TLSDialer) *http.Transport {
 
 // BasicTLSDialer implements TLSDialer.
 type BasicTLSDialer struct {
-	cfg Config
+	hostURL string
 }
 
 // NewBasicTLSDialer returns a new BasicTLSDialer.
-func NewBasicTLSDialer(cfg Config) *BasicTLSDialer {
+func NewBasicTLSDialer(hostURL string) *BasicTLSDialer {
 	return &BasicTLSDialer{
-		cfg: cfg,
+		hostURL: hostURL,
 	}
 }
 
-// DialTLS returns a connection to the given address using the given network.
-func (d *BasicTLSDialer) DialTLS(network, address string) (conn net.Conn, err error) {
-	dialer := &net.Dialer{Timeout: 30 * time.Second} // Alternative Routes spec says this should be a 30s timeout.
-
-	var tlsConfig *tls.Config
-
-	// If we are not dialing the standard API then we should skip cert verification checks.
-	if address != d.cfg.HostURL {
-		tlsConfig = &tls.Config{InsecureSkipVerify: true} //nolint:gosec
-	}
-
-	return tls.DialWithDialer(dialer, network, address, tlsConfig)
+// DialTLSContext returns a connection to the given address using the given network.
+func (d *BasicTLSDialer) DialTLSContext(ctx context.Context, network, address string) (conn net.Conn, err error) {
+	return (&tls.Dialer{
+		NetDialer: &net.Dialer{
+			Timeout: 30 * time.Second,
+		},
+		Config: &tls.Config{
+			InsecureSkipVerify: address != d.hostURL, //nolint:gosec
+		},
+	}).DialContext(ctx, network, address)
 }

internal/dialer/dialer_pinning.go

@@ -15,13 +15,12 @@
 // You should have received a copy of the GNU General Public License
 // along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
 
-package pmapi
+package dialer
 
 import (
+	"context"
 	"crypto/tls"
 	"net"
-
-	"github.com/sirupsen/logrus"
 )
 
 // TrustedAPIPins contains trusted public keys of the protonmail API and proxies.
@@ -33,10 +32,16 @@ var TrustedAPIPins = []string{ //nolint:gochecknoglobals
 	`pin-sha256="AfMENBVvOS8MnISprtvyPsjKlPooqh8nMB/pvCrpJpw="`, // cold backup
 
 	// protonmail.com
+	// \todo remove when sure no one is using it.
 	`pin-sha256="8joiNBdqaYiQpKskgtkJsqRxF7zN0C0aqfi8DacknnI="`, // current
 	`pin-sha256="JMI8yrbc6jB1FYGyyWRLFTmDNgIszrNEMGlgy972e7w="`, // hot backup
 	`pin-sha256="Iu44zU84EOCZ9vx/vz67/MRVrxF1IO4i4NIa8ETwiIY="`, // cold backup
 
+	// proton.me
+	`pin-sha256="CT56BhOTmj5ZIPgb/xD5mH8rY3BLo/MlhP7oPyJUEDo="`, // current
+	`pin-sha256="35Dx28/uzN3LeltkCBQ8RHK0tlNSa2kCpCRGNp34Gxc="`, // hot backup
+	`pin-sha256="qYIukVc63DEITct8sFT7ebIq5qsWmuscaIKeJx+5J5A="`, // col backup
+
 	// proxies
 	`pin-sha256="EU6TS9MO0L/GsDHvVc9D5fChYLNy5JdGYpJw0ccgetM="`, // main
 	`pin-sha256="iKPIHPnDNqdkvOnTClQ8zQAIKG0XavaPkcEo0LBAABA="`, // backup 1
@@ -50,36 +55,37 @@ const TLSReportURI = "https://reports.protonmail.ch/reports/tls"
 // PinningTLSDialer wraps a TLSDialer to check fingerprints after connecting and
 // to report errors if the fingerprint check fails.
 type PinningTLSDialer struct {
-	dialer TLSDialer
-
-	// pinChecker is used to check TLS keys of connections.
-	pinChecker *pinChecker
-
-	reporter *tlsReporter
-
-	// tlsIssueNotifier is used to notify something when there is a TLS issue.
-	tlsIssueNotifier func()
-
-	// A logger for logging messages.
-	log logrus.FieldLogger
+	dialer     TLSDialer
+	pinChecker PinChecker
+	reporter   Reporter
+	tlsIssueCh chan struct{}
 }
 
-// NewPinningTLSDialer constructs a new dialer which only returns tcp connections to servers
+// Reporter is used to report TLS issues.
+type Reporter interface {
+	ReportCertIssue(reportURI, host, port string, state tls.ConnectionState)
+}
+
+// PinChecker is used to check TLS keys of connections.
+type PinChecker interface {
+	CheckCertificate(conn net.Conn) error
+}
+
+// NewPinningTLSDialer constructs a new dialer which only returns TCP connections to servers
 // which present known certificates.
-// If enabled, it reports any invalid certificates it finds.
-func NewPinningTLSDialer(cfg Config, dialer TLSDialer) *PinningTLSDialer {
+// It checks pins using the given pinChecker and reports issues using the given reporter.
+func NewPinningTLSDialer(dialer TLSDialer, reporter Reporter, pinChecker PinChecker) *PinningTLSDialer {
 	return &PinningTLSDialer{
-		dialer:           dialer,
-		pinChecker:       newPinChecker(TrustedAPIPins),
-		reporter:         newTLSReporter(cfg, TrustedAPIPins),
-		tlsIssueNotifier: cfg.TLSIssueHandler,
-		log:              logrus.WithField("pkg", "pmapi/tls-pinning"),
+		dialer:     dialer,
+		pinChecker: pinChecker,
+		reporter:   reporter,
+		tlsIssueCh: make(chan struct{}, 1),
 	}
 }
 
-// DialTLS dials the given network/address, returning an error if the certificates don't match the trusted pins.
-func (p *PinningTLSDialer) DialTLS(network, address string) (net.Conn, error) {
-	conn, err := p.dialer.DialTLS(network, address)
+// DialTLSContext dials the given network/address, returning an error if the certificates don't match the trusted pins.
+func (p *PinningTLSDialer) DialTLSContext(ctx context.Context, network, address string) (net.Conn, error) {
+	conn, err := p.dialer.DialTLSContext(ctx, network, address)
 	if err != nil {
 		return nil, err
 	}
@@ -89,22 +95,20 @@ func (p *PinningTLSDialer) DialTLS(network, address string) (net.Conn, error) {
 		return nil, err
 	}
 
-	if err := p.pinChecker.checkCertificate(conn); err != nil {
-		if p.tlsIssueNotifier != nil {
-			go p.tlsIssueNotifier()
+	if err := p.pinChecker.CheckCertificate(conn); err != nil {
+		if tlsConn, ok := conn.(*tls.Conn); ok && p.reporter != nil {
+			p.reporter.ReportCertIssue(TLSReportURI, host, port, tlsConn.ConnectionState())
 		}
 
-		if tlsConn, ok := conn.(*tls.Conn); ok && p.reporter != nil {
-			p.reporter.reportCertIssue(
-				TLSReportURI,
-				host,
-				port,
-				tlsConn.ConnectionState(),
-			)
-		}
+		p.tlsIssueCh <- struct{}{}
 
 		return nil, err
 	}
 
 	return conn, nil
 }
+
+// GetTLSIssueCh returns a channel which notifies when a TLS issue is reported.
+func (p *PinningTLSDialer) GetTLSIssueCh() <-chan struct{} {
+	return p.tlsIssueCh
+}

internal/dialer/dialer_pinning_checker.go

@@ -15,28 +15,29 @@
 // You should have received a copy of the GNU General Public License
 // along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
 
-package context
+package dialer
 
 import (
+	"crypto/x509"
+	"errors"
 	"fmt"
 
-	"github.com/hashicorp/go-multierror"
-	"github.com/pkg/errors"
+	"github.com/ProtonMail/proton-bridge/v3/pkg/algo"
 )
 
-type bddT struct {
-	err *multierror.Error
+// ErrTLSMismatch indicates that no TLS fingerprint match could be found.
+var ErrTLSMismatch = errors.New("no TLS fingerprint match found")
+
+type TLSPinChecker struct {
+	trustedPins []string
 }
 
-func (t *bddT) Errorf(msg string, args ...interface{}) {
-	err := fmt.Errorf(msg, args...)
-	t.err = multierror.Append(t.err, err)
+func NewTLSPinChecker(trustedPins []string) *TLSPinChecker {
+	return &TLSPinChecker{
+		trustedPins: trustedPins,
+	}
 }
 
-func (t *bddT) FailNow() {
-	t.err = multierror.Append(t.err, errors.New("failed by calling FailNow"))
-}
-
-func (t *bddT) getErrors() error {
-	return t.err.ErrorOrNil()
+func certFingerprint(cert *x509.Certificate) string {
+	return fmt.Sprintf(`pin-sha256=%q`, algo.HashBase64SHA256(string(cert.RawSubjectPublicKeyInfo)))
 }

internal/dialer/dialer_pinning_checker_default.go

@@ -15,33 +15,18 @@
 // You should have received a copy of the GNU General Public License
 // along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
 
-package pmapi
+//go:build !build_qa
+
+package dialer
 
 import (
 	"crypto/tls"
-	"crypto/x509"
 	"errors"
-	"fmt"
 	"net"
-
-	"github.com/ProtonMail/proton-bridge/v2/pkg/algo"
 )
 
-// ErrTLSMismatch indicates that no TLS fingerprint match could be found.
-var ErrTLSMismatch = errors.New("no TLS fingerprint match found")
-
-type pinChecker struct {
-	trustedPins []string
-}
-
-func newPinChecker(trustedPins []string) *pinChecker {
-	return &pinChecker{
-		trustedPins: trustedPins,
-	}
-}
-
-// checkCertificate returns whether the connection presents a known TLS certificate.
-func (p *pinChecker) checkCertificate(conn net.Conn) error {
+// CheckCertificate returns whether the connection presents a known TLS certificate.
+func (p *TLSPinChecker) CheckCertificate(conn net.Conn) error {
 	tlsConn, ok := conn.(*tls.Conn)
 	if !ok {
 		return errors.New("connection is not a TLS connection")
@@ -61,7 +46,3 @@ func (p *pinChecker) checkCertificate(conn net.Conn) error {
 
 	return ErrTLSMismatch
 }
-
-func certFingerprint(cert *x509.Certificate) string {
-	return fmt.Sprintf(`pin-sha256=%q`, algo.HashBase64SHA256(string(cert.RawSubjectPublicKeyInfo)))
-}

internal/dialer/dialer_pinning_checker_qa.go

@@ -15,14 +15,14 @@
 // You should have received a copy of the GNU General Public License
 // along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
 
-package tests
+//go:build build_qa
 
-import "fmt"
+package dialer
 
-func internalError(err error, msg string, args ...interface{}) error {
-	if err == nil {
-		return nil
-	}
-	msg = fmt.Sprintf(msg, args...)
-	return fmt.Errorf("internal error: %s: %v", msg, err)
+import "net"
+
+// CheckCertificate returns whether the connection presents a known TLS certificate.
+// The QA implementation always returns nil.
+func (p *TLSPinChecker) CheckCertificate(conn net.Conn) error {
+	return nil
 }

internal/dialer/dialer_pinning_report.go

@@ -15,17 +15,13 @@
 // You should have received a copy of the GNU General Public License
 // along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
 
-package pmapi
+package dialer
 
 import (
-	"bytes"
-	"encoding/json"
-	"io"
-	"net/http"
-	"strconv"
+	"fmt"
 	"time"
 
-	"github.com/sirupsen/logrus"
+	"github.com/go-resty/resty/v2"
 )
 
 // tlsReport is inspired by https://tools.ietf.org/html/rfc7469#section-3.
@@ -38,7 +34,7 @@ type tlsReport struct {
 	Hostname string `json:"hostname"`
 
 	// Port to which the UA made original request that failed pin validation.
-	Port int `json:"port"`
+	Port string `json:"port"`
 
 	// EffectiveExpirationDate for noted pins in time.RFC3339 format.
 	EffectiveExpirationDate string `json:"effective-expiration-date"`
@@ -89,12 +85,9 @@ type tlsReport struct {
 // newTLSReport constructs a new tlsReport configured with the given app version and known pinned public keys.
 // Temporal things (current date/time) are not set yet -- they are set when sendReport is called.
 func newTLSReport(host, port, server string, certChain, knownPins []string, appVersion string) (report tlsReport) {
-	// If we can't parse the port for whatever reason, it doesn't really matter; we should report anyway.
-	intPort, _ := strconv.Atoi(port)
-
 	report = tlsReport{
 		Hostname:               host,
-		Port:                   intPort,
+		Port:                   port,
 		NotedHostname:          server,
 		ServedCertificateChain: certChain,
 		KnownPins:              knownPins,
@@ -105,40 +98,21 @@ func newTLSReport(host, port, server string, certChain, knownPins []string, appV
 }
 
 // sendReport posts the given TLS report to the standard TLS Report URI.
-func (r tlsReport) sendReport(cfg Config, uri string) {
+func sendReport(report tlsReport, userAgent, appVersion, hostURL, remoteURI string) error {
 	now := time.Now()
-	r.DateTime = now.Format(time.RFC3339)
-	r.EffectiveExpirationDate = now.Add(365 * 24 * 60 * 60 * time.Second).Format(time.RFC3339)
 
-	b, err := json.Marshal(r)
-	if err != nil {
-		logrus.WithError(err).Error("Failed to marshal TLS report")
-		return
+	report.DateTime = now.Format(time.RFC3339)
+	report.EffectiveExpirationDate = now.Add(365 * 24 * time.Hour).Format(time.RFC3339)
+
+	if _, err := resty.New().
+		SetTransport(CreateTransportWithDialer(NewBasicTLSDialer(hostURL))).
+		SetHeader("User-Agent", userAgent).
+		SetHeader("x-pm-appversion", appVersion).
+		NewRequest().
+		SetBody(report).
+		Post(remoteURI); err != nil {
+		return fmt.Errorf("failed to send TLS report: %w", err)
 	}
 
-	req, err := http.NewRequest("POST", uri, bytes.NewReader(b))
-	if err != nil {
-		logrus.WithError(err).Error("Failed to create http request")
-		return
-	}
-
-	req.Header.Add("Content-Type", "application/json")
-	req.Header.Set("User-Agent", cfg.getUserAgent())
-	req.Header.Set("x-pm-appversion", r.AppVersion)
-
-	logrus.WithField("request", req).Warn("Reporting TLS mismatch")
-	res, err := (&http.Client{Transport: CreateTransportWithDialer(NewBasicTLSDialer(cfg))}).Do(req)
-	if err != nil {
-		logrus.WithError(err).Error("Failed to report TLS mismatch")
-		return
-	}
-
-	logrus.WithField("response", res).Error("Reported TLS mismatch")
-
-	if res.StatusCode != http.StatusOK {
-		logrus.WithField("status", http.StatusOK).Error("StatusCode was not OK")
-	}
-
-	_, _ = io.ReadAll(res.Body)
-	_ = res.Body.Close()
+	return nil
 }