forked from Silverfish/proton-bridge
101 lines
2.5 KiB
Go
101 lines
2.5 KiB
Go
// Copyright (c) 2024 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 vault
|
|
|
|
import (
|
|
"encoding/base64"
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
"io/fs"
|
|
"os"
|
|
"path/filepath"
|
|
|
|
"github.com/ProtonMail/gopenpgp/v2/crypto"
|
|
"github.com/ProtonMail/proton-bridge/v3/pkg/keychain"
|
|
)
|
|
|
|
const vaultSecretName = "bridge-vault-key"
|
|
|
|
type Keychain struct {
|
|
Helper string
|
|
}
|
|
|
|
func getKeychainPrefPath(vaultDir string) string {
|
|
return filepath.Clean(filepath.Join(vaultDir, "keychain.json"))
|
|
}
|
|
|
|
func GetHelper(vaultDir string) (string, error) {
|
|
if _, err := os.Stat(getKeychainPrefPath(vaultDir)); errors.Is(err, fs.ErrNotExist) {
|
|
return "", nil
|
|
}
|
|
|
|
b, err := os.ReadFile(getKeychainPrefPath(vaultDir))
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
var keychain Keychain
|
|
|
|
if err := json.Unmarshal(b, &keychain); err != nil {
|
|
return "", err
|
|
}
|
|
|
|
return keychain.Helper, nil
|
|
}
|
|
|
|
func SetHelper(vaultDir, helper string) error {
|
|
b, err := json.MarshalIndent(Keychain{Helper: helper}, "", " ")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return os.WriteFile(getKeychainPrefPath(vaultDir), b, 0o600)
|
|
}
|
|
|
|
func GetVaultKey(kc *keychain.Keychain) ([]byte, error) {
|
|
_, keyEnc, err := kc.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
|
|
}
|
|
|
|
func SetVaultKey(kc *keychain.Keychain, key []byte) error {
|
|
return kc.Put(vaultSecretName, base64.StdEncoding.EncodeToString(key))
|
|
}
|
|
|
|
func NewVaultKey(kc *keychain.Keychain) ([]byte, error) {
|
|
tok, err := crypto.RandomToken(32)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("could not generate random token: %w", err)
|
|
}
|
|
|
|
if err := kc.Put(vaultSecretName, base64.StdEncoding.EncodeToString(tok)); err != nil {
|
|
return nil, fmt.Errorf("could not put keychain item: %w", err)
|
|
}
|
|
|
|
return tok, nil
|
|
}
|