We build too many walls and not enough bridges

test/fakeapi/auth.go

@@ -0,0 +1,153 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.Bridge.
+//
+// ProtonMail 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.
+//
+// ProtonMail 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 ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package fakeapi
+
+import (
+	"strings"
+
+	"github.com/ProtonMail/proton-bridge/pkg/pmapi"
+)
+
+func (api *FakePMAPI) SetAuths(auths chan<- *pmapi.Auth) {
+	api.auths = auths
+}
+
+func (api *FakePMAPI) AuthInfo(username string) (*pmapi.AuthInfo, error) {
+	if err := api.checkInternetAndRecordCall(POST, "/auth/info", &pmapi.AuthInfoReq{
+		Username: username,
+	}); err != nil {
+		return nil, err
+	}
+	authInfo := &pmapi.AuthInfo{}
+	user, ok := api.controller.usersByUsername[username]
+	if !ok {
+		// If username is wrong, API server will return empty but
+		// positive response
+		return authInfo, nil
+	}
+	authInfo.TwoFA = user.get2FAInfo()
+	return authInfo, nil
+}
+
+func (api *FakePMAPI) Auth(username, password string, authInfo *pmapi.AuthInfo) (*pmapi.Auth, error) {
+	if err := api.checkInternetAndRecordCall(POST, "/auth", &pmapi.AuthReq{
+		Username: username,
+	}); err != nil {
+		return nil, err
+	}
+
+	session, err := api.controller.createSessionIfAuthorized(username, password)
+	if err != nil {
+		return nil, err
+	}
+	api.setUID(session.uid)
+
+	if err := api.setUser(username); err != nil {
+		return nil, err
+	}
+
+	user := api.controller.usersByUsername[username]
+	auth := &pmapi.Auth{
+		TwoFA:        user.get2FAInfo(),
+		RefreshToken: session.refreshToken,
+	}
+
+	api.sendAuth(auth)
+	return auth, nil
+}
+
+func (api *FakePMAPI) Auth2FA(twoFactorCode string, auth *pmapi.Auth) (*pmapi.Auth2FA, error) {
+	if err := api.checkInternetAndRecordCall(POST, "/auth/2fa", &pmapi.Auth2FAReq{
+		TwoFactorCode: twoFactorCode,
+	}); err != nil {
+		return nil, err
+	}
+
+	if api.uid == "" {
+		return nil, pmapi.ErrInvalidToken
+	}
+
+	session, ok := api.controller.sessionsByUID[api.uid]
+	if !ok {
+		return nil, pmapi.ErrInvalidToken
+	}
+
+	session.hasFullScope = true
+
+	return &pmapi.Auth2FA{
+		Scope: "full",
+	}, nil
+}
+
+func (api *FakePMAPI) AuthRefresh(token string) (*pmapi.Auth, error) {
+	if api.lastToken == "" {
+		api.lastToken = token
+	}
+
+	split := strings.Split(token, ":")
+	if len(split) != 2 {
+		return nil, pmapi.ErrInvalidToken
+	}
+
+	if err := api.checkInternetAndRecordCall(POST, "/auth/refresh", &pmapi.AuthRefreshReq{
+		ResponseType: "token",
+		GrantType:    "refresh_token",
+		UID:          split[0],
+		RefreshToken: split[1],
+		RedirectURI:  "https://protonmail.ch",
+		State:        "random_string",
+	}); err != nil {
+		return nil, err
+	}
+
+	session, ok := api.controller.sessionsByUID[split[0]]
+	if !ok || session.refreshToken != split[1] {
+		api.log.WithField("token", token).
+			WithField("session", session).
+			Warn("Refresh token failed")
+		// The API server will respond normal error not 401 (check api)
+		// i.e. should not use `sendAuth(nil)`
+		api.setUID("")
+		return nil, pmapi.ErrInvalidToken
+	}
+	api.setUID(split[0])
+
+	if err := api.setUser(session.username); err != nil {
+		return nil, err
+	}
+	api.controller.refreshTheTokensForSession(session)
+	api.lastToken = split[0] + ":" + session.refreshToken
+
+	auth := &pmapi.Auth{
+		RefreshToken: session.refreshToken,
+	}
+	api.sendAuth(auth)
+
+	return auth, nil
+}
+
+func (api *FakePMAPI) Logout() error {
+	if err := api.checkAndRecordCall(DELETE, "/auth", nil); err != nil {
+		return err
+	}
+	// Logout will also emit change to auth channel
+	api.sendAuth(nil)
+	api.controller.deleteSession(api.uid)
+	api.unsetUser()
+	return nil
+}