394 lines
13 KiB
Go
394 lines
13 KiB
Go
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// mautrix-whatsapp - A Matrix-WhatsApp puppeting bridge.
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// Copyright (C) 2020 Tulir Asokan
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero 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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// This program 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 Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package database
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import (
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"database/sql"
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"fmt"
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"strings"
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"sync"
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"github.com/lib/pq"
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"github.com/pkg/errors"
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log "maunium.net/go/maulogger/v2"
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"maunium.net/go/mautrix/crypto"
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"maunium.net/go/mautrix/crypto/olm"
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"maunium.net/go/mautrix/id"
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)
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type SQLCryptoStore struct {
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db *Database
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log log.Logger
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UserID id.UserID
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DeviceID id.DeviceID
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SyncToken string
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PickleKey []byte
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Account *crypto.OlmAccount
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GhostIDFormat string
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OGSLock sync.RWMutex
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OutGroupSessions map[id.RoomID]*crypto.OutboundGroupSession
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}
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var _ crypto.Store = (*SQLCryptoStore)(nil)
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func NewSQLCryptoStore(db *Database, deviceID id.DeviceID) *SQLCryptoStore {
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return &SQLCryptoStore{
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db: db,
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log: db.log.Sub("CryptoStore"),
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PickleKey: []byte("maunium.net/go/mautrix-whatsapp"),
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DeviceID: deviceID,
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OutGroupSessions: make(map[id.RoomID]*crypto.OutboundGroupSession),
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}
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}
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func (db *Database) FindDeviceID() (deviceID id.DeviceID) {
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err := db.QueryRow("SELECT device_id FROM crypto_account LIMIT 1").Scan(&deviceID)
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if err != nil && err != sql.ErrNoRows {
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db.log.Warnln("Failed to scan device ID:", err)
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}
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return
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}
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func (store *SQLCryptoStore) GetRoomMembers(roomID id.RoomID) (members []id.UserID, err error) {
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var rows *sql.Rows
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rows, err = store.db.Query(`
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SELECT user_id FROM mx_user_profile
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WHERE room_id=$1
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AND (membership='join' OR membership='invite')
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AND user_id<>$2
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AND user_id NOT LIKE $3
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`, roomID, store.UserID, store.GhostIDFormat)
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if err != nil {
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return
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}
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for rows.Next() {
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var userID id.UserID
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err := rows.Scan(&userID)
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if err != nil {
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store.log.Warnfln("Failed to scan member in %s: %v", roomID, err)
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} else {
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members = append(members, userID)
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}
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}
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return
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}
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func (store *SQLCryptoStore) Flush() error {
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return nil
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}
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func (store *SQLCryptoStore) PutNextBatch(nextBatch string) {
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store.SyncToken = nextBatch
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_, err := store.db.Exec(`UPDATE crypto_account SET sync_token=$1 WHERE device_id=$2`, store.SyncToken, store.DeviceID)
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if err != nil {
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store.log.Warnln("Failed to store sync token:", err)
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}
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}
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func (store *SQLCryptoStore) GetNextBatch() string {
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if store.SyncToken == "" {
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err := store.db.
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QueryRow("SELECT sync_token FROM crypto_account WHERE device_id=$1", store.DeviceID).
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Scan(&store.SyncToken)
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if err != nil && err != sql.ErrNoRows {
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store.log.Warnln("Failed to scan sync token:", err)
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}
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}
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return store.SyncToken
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}
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func (store *SQLCryptoStore) PutAccount(account *crypto.OlmAccount) error {
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store.Account = account
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bytes := account.Internal.Pickle(store.PickleKey)
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var err error
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if store.db.dialect == "postgres" {
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_, err = store.db.Exec(`
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INSERT INTO crypto_account (device_id, shared, sync_token, account) VALUES ($1, $2, $3, $4)
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ON CONFLICT (device_id) DO UPDATE SET shared=$2, sync_token=$3, account=$4`,
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store.DeviceID, account.Shared, store.SyncToken, bytes)
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} else if store.db.dialect == "sqlite3" {
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_, err = store.db.Exec("INSERT OR REPLACE INTO crypto_account (deivce_id, shared, sync_token, account) VALUES ($1, $2, $3, $4)",
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store.DeviceID, account.Shared, store.SyncToken, bytes)
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} else {
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err = fmt.Errorf("unsupported dialect %s", store.db.dialect)
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}
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if err != nil {
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store.log.Warnln("Failed to store account:", err)
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}
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return nil
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}
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func (store *SQLCryptoStore) GetAccount() (*crypto.OlmAccount, error) {
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if store.Account == nil {
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row := store.db.QueryRow("SELECT shared, sync_token, account FROM crypto_account WHERE device_id=$1", store.DeviceID)
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acc := &crypto.OlmAccount{Internal: *olm.NewBlankAccount()}
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var accountBytes []byte
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err := row.Scan(&acc.Shared, &store.SyncToken, &accountBytes)
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if err == sql.ErrNoRows {
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return nil, nil
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} else if err != nil {
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return nil, err
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}
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err = acc.Internal.Unpickle(accountBytes, store.PickleKey)
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if err != nil {
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return nil, err
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}
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store.Account = acc
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}
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return store.Account, nil
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}
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func (store *SQLCryptoStore) HasSession(key id.SenderKey) bool {
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// TODO this may need to be changed if olm sessions start expiring
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var sessionID id.SessionID
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err := store.db.QueryRow("SELECT session_id FROM crypto_olm_session WHERE sender_key=$1 LIMIT 1", key).Scan(&sessionID)
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if err == sql.ErrNoRows {
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return false
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}
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return len(sessionID) > 0
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}
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func (store *SQLCryptoStore) GetSessions(key id.SenderKey) (crypto.OlmSessionList, error) {
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rows, err := store.db.Query("SELECT session, created_at, last_used FROM crypto_olm_session WHERE sender_key=$1 ORDER BY session_id", key)
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if err != nil {
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return nil, err
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}
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list := crypto.OlmSessionList{}
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for rows.Next() {
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sess := crypto.OlmSession{Internal: *olm.NewBlankSession()}
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var sessionBytes []byte
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err := rows.Scan(&sessionBytes, &sess.CreationTime, &sess.UseTime)
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if err != nil {
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return nil, err
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}
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err = sess.Internal.Unpickle(sessionBytes, store.PickleKey)
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if err != nil {
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return nil, err
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}
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list = append(list, &sess)
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}
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return list, nil
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}
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func (store *SQLCryptoStore) GetLatestSession(key id.SenderKey) (*crypto.OlmSession, error) {
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row := store.db.QueryRow("SELECT session, created_at, last_used FROM crypto_olm_session WHERE sender_key=$1 ORDER BY session_id DESC LIMIT 1", key)
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sess := crypto.OlmSession{Internal: *olm.NewBlankSession()}
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var sessionBytes []byte
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err := row.Scan(&sessionBytes, &sess.CreationTime, &sess.UseTime)
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if err == sql.ErrNoRows {
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return nil, nil
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} else if err != nil {
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return nil, err
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}
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return &sess, sess.Internal.Unpickle(sessionBytes, store.PickleKey)
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}
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func (store *SQLCryptoStore) AddSession(key id.SenderKey, session *crypto.OlmSession) error {
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sessionBytes := session.Internal.Pickle(store.PickleKey)
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_, err := store.db.Exec("INSERT INTO crypto_olm_session (session_id, sender_key, session, created_at, last_used) VALUES ($1, $2, $3, $4, $5)",
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session.ID(), key, sessionBytes, session.CreationTime, session.UseTime)
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return err
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}
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func (store *SQLCryptoStore) PutGroupSession(roomID id.RoomID, senderKey id.SenderKey, sessionID id.SessionID, session *crypto.InboundGroupSession) error {
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sessionBytes := session.Internal.Pickle(store.PickleKey)
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forwardingChains := strings.Join(session.ForwardingChains, ",")
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_, err := store.db.Exec("INSERT INTO crypto_megolm_inbound_session (session_id, sender_key, signing_key, room_id, session, forwarding_chains) VALUES ($1, $2, $3, $4, $5, $6)",
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sessionID, senderKey, session.SigningKey, roomID, sessionBytes, forwardingChains)
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return err
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}
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func (store *SQLCryptoStore) GetGroupSession(roomID id.RoomID, senderKey id.SenderKey, sessionID id.SessionID) (*crypto.InboundGroupSession, error) {
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var signingKey id.Ed25519
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var sessionBytes []byte
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var forwardingChains string
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err := store.db.QueryRow(`
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SELECT signing_key, session, forwarding_chains
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FROM crypto_megolm_inbound_session
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WHERE room_id=$1 AND sender_key=$2 AND session_id=$3`,
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roomID, senderKey, sessionID,
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).Scan(&signingKey, &sessionBytes, &forwardingChains)
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if err == sql.ErrNoRows {
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return nil, nil
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} else if err != nil {
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return nil, err
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}
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igs := olm.NewBlankInboundGroupSession()
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err = igs.Unpickle(sessionBytes, store.PickleKey)
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if err != nil {
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return nil, err
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}
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return &crypto.InboundGroupSession{
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Internal: *igs,
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SigningKey: signingKey,
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SenderKey: senderKey,
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RoomID: roomID,
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ForwardingChains: strings.Split(forwardingChains, ","),
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}, nil
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}
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func (store *SQLCryptoStore) PutOutboundGroupSession(roomID id.RoomID, session *crypto.OutboundGroupSession) error {
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store.OGSLock.Lock()
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store.OutGroupSessions[roomID] = session
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store.OGSLock.Unlock()
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return nil
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}
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func (store *SQLCryptoStore) GetOutboundGroupSession(roomID id.RoomID) (*crypto.OutboundGroupSession, error) {
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store.OGSLock.RLock()
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defer store.OGSLock.RUnlock()
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return store.OutGroupSessions[roomID], nil
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}
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func (store *SQLCryptoStore) PopOutboundGroupSession(roomID id.RoomID) error {
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store.OGSLock.Lock()
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delete(store.OutGroupSessions, roomID)
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store.OGSLock.Unlock()
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return nil
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}
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func (store *SQLCryptoStore) ValidateMessageIndex(senderKey id.SenderKey, sessionID id.SessionID, eventID id.EventID, index uint, timestamp int64) bool {
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var resultEventID id.EventID
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var resultTimestamp int64
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err := store.db.QueryRow(
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"SELECT event_id, timestamp FROM crypto_message_index WHERE sender_key=$1 AND session_id=$2 AND index=$3",
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senderKey, sessionID, index,
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).Scan(&resultEventID, &resultTimestamp)
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if err == sql.ErrNoRows {
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_, err := store.db.Exec("INSERT INTO crypto_message_index (sender_key, session_id, index, event_id, timestamp) VALUES ($1, $2, $3, $4, $5)",
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senderKey, sessionID, index, eventID, timestamp)
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if err != nil {
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store.log.Warnln("Failed to store message index:", err)
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}
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return true
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} else if err != nil {
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store.log.Warnln("Failed to scan message index:", err)
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return true
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}
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if resultEventID != eventID || resultTimestamp != timestamp {
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return false
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}
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return true
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}
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func (store *SQLCryptoStore) GetDevices(userID id.UserID) (map[id.DeviceID]*crypto.DeviceIdentity, error) {
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var ignore id.UserID
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err := store.db.QueryRow("SELECT user_id FROM crypto_tracked_user WHERE user_id=$1", userID).Scan(&ignore)
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if err == sql.ErrNoRows {
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return nil, nil
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} else if err != nil {
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return nil, err
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}
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rows, err := store.db.Query("SELECT device_id, identity_key, signing_key, trust, deleted, name FROM crypto_device WHERE user_id=$1", userID)
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if err != nil {
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return nil, err
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}
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data := make(map[id.DeviceID]*crypto.DeviceIdentity)
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for rows.Next() {
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var identity crypto.DeviceIdentity
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err := rows.Scan(&identity.DeviceID, &identity.IdentityKey, &identity.SigningKey, &identity.Trust, &identity.Deleted, &identity.Name)
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if err != nil {
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return nil, err
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}
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identity.UserID = userID
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data[identity.DeviceID] = &identity
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}
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return data, nil
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}
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func (store *SQLCryptoStore) PutDevices(userID id.UserID, devices map[id.DeviceID]*crypto.DeviceIdentity) error {
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tx, err := store.db.Begin()
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if err != nil {
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return err
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}
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if store.db.dialect == "postgres" {
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_, err = tx.Exec("INSERT INTO crypto_tracked_user (user_id) VALUES ($1) ON CONFLICT (user_id) DO NOTHING", userID)
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} else if store.db.dialect == "sqlite3" {
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_, err = tx.Exec("INSERT OR IGNORE INTO crypto_tracked_users (user_id) VALUES ($1)", userID)
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} else {
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err = fmt.Errorf("unsupported dialect %s", store.db.dialect)
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}
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if err != nil {
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return errors.Wrap(err, "failed to add user to tracked users list")
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}
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_, err = tx.Exec("DELETE FROM crypto_device WHERE user_id=$1", userID)
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if err != nil {
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_ = tx.Rollback()
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return errors.Wrap(err, "failed to delete old devices")
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}
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if len(devices) == 0 {
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err = tx.Commit()
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if err != nil {
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return errors.Wrap(err, "failed to commit changes (no devices added)")
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}
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return nil
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}
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// TODO do this in batches to avoid too large db queries
|
||
|
|
values := make([]interface{}, 1, len(devices)*6+1)
|
||
|
|
values[0] = userID
|
||
|
|
valueStrings := make([]string, 0, len(devices))
|
||
|
|
i := 2
|
||
|
|
for deviceID, identity := range devices {
|
||
|
|
values = append(values, deviceID, identity.IdentityKey, identity.SigningKey, identity.Trust, identity.Deleted, identity.Name)
|
||
|
|
valueStrings = append(valueStrings, fmt.Sprintf("($1, $%d, $%d, $%d, $%d, $%d, $%d)", i, i+1, i+2, i+3, i+4, i+5))
|
||
|
|
i += 6
|
||
|
|
}
|
||
|
|
valueString := strings.Join(valueStrings, ",")
|
||
|
|
_, err = tx.Exec("INSERT INTO crypto_device (user_id, device_id, identity_key, signing_key, trust, deleted, name) VALUES "+valueString, values...)
|
||
|
|
if err != nil {
|
||
|
|
_ = tx.Rollback()
|
||
|
|
return errors.Wrap(err, "failed to insert new devices")
|
||
|
|
}
|
||
|
|
err = tx.Commit()
|
||
|
|
if err != nil {
|
||
|
|
return errors.Wrap(err, "failed to commit changes")
|
||
|
|
}
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (store *SQLCryptoStore) FilterTrackedUsers(users []id.UserID) []id.UserID {
|
||
|
|
var rows *sql.Rows
|
||
|
|
var err error
|
||
|
|
if store.db.dialect == "postgres" {
|
||
|
|
rows, err = store.db.Query("SELECT user_id FROM crypto_tracked_user WHERE user_id = ANY($1)", pq.Array(users))
|
||
|
|
} else {
|
||
|
|
rows, err = store.db.Query("SELECT user_id FROM crypto_tracked_user WHERE user_id IN ($1)", users)
|
||
|
|
}
|
||
|
|
if err != nil {
|
||
|
|
store.log.Warnln("Failed to filter tracked users:", err)
|
||
|
|
return users
|
||
|
|
}
|
||
|
|
var ptr int
|
||
|
|
for rows.Next() {
|
||
|
|
err = rows.Scan(&users[ptr])
|
||
|
|
if err != nil {
|
||
|
|
store.log.Warnln("Failed to tracked user ID:", err)
|
||
|
|
} else {
|
||
|
|
ptr++
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return users[:ptr]
|
||
|
|
}
|