proton-bridge/internal/app/vault.go

119 lines
3.7 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 app
import (
"fmt"
"path"
"github.com/ProtonMail/gluon/async"
"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"
)
func WithVault(locations *locations.Locations, keychains *keychain.List, panicHandler async.PanicHandler, 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, keychains, panicHandler)
if err != nil {
return fmt.Errorf("could not create vault: %w", err)
}
logrus.WithFields(logrus.Fields{
"insecure": insecure,
"corrupt": corrupt != nil,
}).Debug("Vault created")
if corrupt != nil {
logrus.WithError(corrupt).Warn("Failed to load existing vault, vault has been reset")
}
cert, _ := encVault.GetBridgeTLSCert()
certs.NewInstaller().LogCertInstallStatus(cert)
// GODT-1950: Add teardown actions (e.g. to close the vault).
return fn(encVault, insecure, corrupt != nil)
}
func newVault(locations *locations.Locations, keychains *keychain.List, panicHandler async.PanicHandler) (*vault.Vault, bool, error, error) {
vaultDir, err := locations.ProvideSettingsPath()
if err != nil {
return nil, false, nil, 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 := loadVaultKey(vaultDir, keychains); err != nil {
logrus.WithError(err).Error("Could not load/create vault key")
insecure = true
// We store the insecure vault in a separate directory
vaultDir = path.Join(vaultDir, "insecure")
} else {
vaultKey = key
}
gluonCacheDir, err := locations.ProvideGluonCachePath()
if err != nil {
return nil, false, nil, fmt.Errorf("could not provide gluon path: %w", err)
}
vault, corrupt, err := vault.New(vaultDir, gluonCacheDir, vaultKey, panicHandler)
if err != nil {
return nil, false, corrupt, fmt.Errorf("could not create vault: %w", err)
}
return vault, insecure, corrupt, nil
}
func loadVaultKey(vaultDir string, keychains *keychain.List) ([]byte, error) {
helper, err := vault.GetHelper(vaultDir)
if err != nil {
return nil, fmt.Errorf("could not get keychain helper: %w", err)
}
kc, err := keychain.NewKeychain(helper, constants.KeyChainName, keychains.GetHelpers(), keychains.GetDefaultHelper())
if err != nil {
return nil, fmt.Errorf("could not create keychain: %w", err)
}
key, err := vault.GetVaultKey(kc)
if err != nil {
if keychain.IsErrKeychainNoItem(err) {
logrus.WithError(err).Warn("no vault key found, generating new")
return vault.NewVaultKey(kc)
}
return nil, fmt.Errorf("could not check for vault key: %w", err)
}
return key, nil
}