137 lines
3.2 KiB
Go
137 lines
3.2 KiB
Go
// Copyright (c) 2024 Proton AG
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//
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// This file is part of Proton Mail Bridge.
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//
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// Proton Mail Bridge is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Proton Mail Bridge is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Proton Mail Bridge. If not, see <https://www.gnu.org/licenses/>.
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// Package credentials implements our struct stored in keychain.
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// Store struct is kind of like a database client.
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// Credentials struct is kind of like one record from the database.
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package credentials
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import (
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"encoding/base64"
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"errors"
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"fmt"
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"strings"
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"github.com/sirupsen/logrus"
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)
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const (
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sep = "\x00"
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itemLengthBridge = 9
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itemLengthImportExport = 6 // Old format for Import-Export.
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)
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var (
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log = logrus.WithField("pkg", "credentials") //nolint:gochecknoglobals
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ErrWrongFormat = errors.New("malformed credentials")
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)
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type Credentials struct {
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UserID, // Do not marshal; used as a key.
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Name,
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Emails,
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APIToken string
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MailboxPassword []byte
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BridgePassword,
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Version string
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Timestamp int64
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IsHidden, // Deprecated.
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IsCombinedAddressMode bool
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}
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func (s *Credentials) Marshal() string {
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items := []string{
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s.Name, // 0
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s.Emails, // 1
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s.APIToken, // 2
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string(s.MailboxPassword), // 3
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s.BridgePassword, // 4
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s.Version, // 5
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"", // 6
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"", // 7
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"", // 8
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}
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items[6] = fmt.Sprint(s.Timestamp)
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if s.IsHidden {
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items[7] = "1"
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}
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if s.IsCombinedAddressMode {
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items[8] = "1"
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}
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str := strings.Join(items, sep)
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return base64.StdEncoding.EncodeToString([]byte(str))
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}
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func (s *Credentials) Unmarshal(secret string) error {
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b, err := base64.StdEncoding.DecodeString(secret)
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if err != nil {
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return err
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}
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items := strings.Split(string(b), sep)
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if len(items) != itemLengthBridge && len(items) != itemLengthImportExport {
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return ErrWrongFormat
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}
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s.Name = items[0]
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s.Emails = items[1]
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s.APIToken = items[2]
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s.MailboxPassword = []byte(items[3])
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switch len(items) {
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case itemLengthBridge:
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s.BridgePassword = items[4]
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s.Version = items[5]
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if _, err = fmt.Sscan(items[6], &s.Timestamp); err != nil {
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s.Timestamp = 0
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}
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if s.IsHidden = false; items[7] == "1" {
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s.IsHidden = true
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}
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if s.IsCombinedAddressMode = false; items[8] == "1" {
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s.IsCombinedAddressMode = true
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}
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case itemLengthImportExport:
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s.Version = items[4]
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if _, err = fmt.Sscan(items[5], &s.Timestamp); err != nil {
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s.Timestamp = 0
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}
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}
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return nil
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}
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func (s *Credentials) EmailList() []string {
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return strings.Split(s.Emails, ";")
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}
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func (s *Credentials) SplitAPIToken() (string, string, error) {
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split := strings.Split(s.APIToken, ":")
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if len(split) != 2 {
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return "", "", errors.New("malformed API token")
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}
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return split[0], split[1], nil
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}
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