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// Copyright 2021 The Matrix.org Foundation C.I.C.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package postgres
import (
"context"
"database/sql"
"encoding/json"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/userapi/api"
"github.com/matrix-org/dendrite/userapi/storage/tables"
)
const keyBackupTableSchema = `
CREATE TABLE IF NOT EXISTS userapi_key_backups (
user_id TEXT NOT NULL,
room_id TEXT NOT NULL,
session_id TEXT NOT NULL,
version TEXT NOT NULL,
first_message_index INTEGER NOT NULL,
forwarded_count INTEGER NOT NULL,
is_verified BOOLEAN NOT NULL,
session_data TEXT NOT NULL
);
CREATE UNIQUE INDEX IF NOT EXISTS userapi_key_backups_idx ON userapi_key_backups(user_id, room_id, session_id, version);
CREATE INDEX IF NOT EXISTS userapi_key_backups_versions_idx ON userapi_key_backups(user_id, version);
`
const insertBackupKeySQL = "" +
"INSERT INTO userapi_key_backups(user_id, room_id, session_id, version, first_message_index, forwarded_count, is_verified, session_data) " +
"VALUES ($1, $2, $3, $4, $5, $6, $7, $8)"
const updateBackupKeySQL = "" +
"UPDATE userapi_key_backups SET first_message_index=$1, forwarded_count=$2, is_verified=$3, session_data=$4 " +
"WHERE user_id=$5 AND room_id=$6 AND session_id=$7 AND version=$8"
const countKeysSQL = "" +
"SELECT COUNT(*) FROM userapi_key_backups WHERE user_id = $1 AND version = $2"
const selectBackupKeysSQL = "" +
"SELECT room_id, session_id, first_message_index, forwarded_count, is_verified, session_data FROM userapi_key_backups " +
"WHERE user_id = $1 AND version = $2"
const selectKeysByRoomIDSQL = "" +
"SELECT room_id, session_id, first_message_index, forwarded_count, is_verified, session_data FROM userapi_key_backups " +
"WHERE user_id = $1 AND version = $2 AND room_id = $3"
const selectKeysByRoomIDAndSessionIDSQL = "" +
"SELECT room_id, session_id, first_message_index, forwarded_count, is_verified, session_data FROM userapi_key_backups " +
"WHERE user_id = $1 AND version = $2 AND room_id = $3 AND session_id = $4"
type keyBackupStatements struct {
insertBackupKeyStmt *sql.Stmt
updateBackupKeyStmt *sql.Stmt
countKeysStmt *sql.Stmt
selectKeysStmt *sql.Stmt
selectKeysByRoomIDStmt *sql.Stmt
selectKeysByRoomIDAndSessionIDStmt *sql.Stmt
}
func NewPostgresKeyBackupTable(db *sql.DB) (tables.KeyBackupTable, error) {
s := &keyBackupStatements{}
_, err := db.Exec(keyBackupTableSchema)
if err != nil {
return nil, err
}
return s, sqlutil.StatementList{
{&s.insertBackupKeyStmt, insertBackupKeySQL},
{&s.updateBackupKeyStmt, updateBackupKeySQL},
{&s.countKeysStmt, countKeysSQL},
{&s.selectKeysStmt, selectBackupKeysSQL},
{&s.selectKeysByRoomIDStmt, selectKeysByRoomIDSQL},
{&s.selectKeysByRoomIDAndSessionIDStmt, selectKeysByRoomIDAndSessionIDSQL},
}.Prepare(db)
}
func (s keyBackupStatements) CountKeys(
ctx context.Context, txn *sql.Tx, userID, version string,
) (count int64, err error) {
err = txn.Stmt(s.countKeysStmt).QueryRowContext(ctx, userID, version).Scan(&count)
return
}
func (s *keyBackupStatements) InsertBackupKey(
ctx context.Context, txn *sql.Tx, userID, version string, key api.InternalKeyBackupSession,
) (err error) {
_, err = txn.Stmt(s.insertBackupKeyStmt).ExecContext(
ctx, userID, key.RoomID, key.SessionID, version, key.FirstMessageIndex, key.ForwardedCount, key.IsVerified, string(key.SessionData),
)
return
}
func (s *keyBackupStatements) UpdateBackupKey(
ctx context.Context, txn *sql.Tx, userID, version string, key api.InternalKeyBackupSession,
) (err error) {
_, err = txn.Stmt(s.updateBackupKeyStmt).ExecContext(
ctx, key.FirstMessageIndex, key.ForwardedCount, key.IsVerified, string(key.SessionData), userID, key.RoomID, key.SessionID, version,
)
return
}
func (s *keyBackupStatements) SelectKeys(
ctx context.Context, txn *sql.Tx, userID, version string,
) (map[string]map[string]api.KeyBackupSession, error) {
rows, err := txn.Stmt(s.selectKeysStmt).QueryContext(ctx, userID, version)
if err != nil {
return nil, err
}
return unpackKeys(ctx, rows)
}
func (s *keyBackupStatements) SelectKeysByRoomID(
ctx context.Context, txn *sql.Tx, userID, version, roomID string,
) (map[string]map[string]api.KeyBackupSession, error) {
rows, err := txn.Stmt(s.selectKeysByRoomIDStmt).QueryContext(ctx, userID, version, roomID)
if err != nil {
return nil, err
}
return unpackKeys(ctx, rows)
}
func (s *keyBackupStatements) SelectKeysByRoomIDAndSessionID(
ctx context.Context, txn *sql.Tx, userID, version, roomID, sessionID string,
) (map[string]map[string]api.KeyBackupSession, error) {
rows, err := txn.Stmt(s.selectKeysByRoomIDAndSessionIDStmt).QueryContext(ctx, userID, version, roomID, sessionID)
if err != nil {
return nil, err
}
return unpackKeys(ctx, rows)
}
func unpackKeys(ctx context.Context, rows *sql.Rows) (map[string]map[string]api.KeyBackupSession, error) {
result := make(map[string]map[string]api.KeyBackupSession)
defer internal.CloseAndLogIfError(ctx, rows, "selectKeysStmt.Close failed")
for rows.Next() {
var key api.InternalKeyBackupSession
// room_id, session_id, first_message_index, forwarded_count, is_verified, session_data
var sessionDataStr string
if err := rows.Scan(&key.RoomID, &key.SessionID, &key.FirstMessageIndex, &key.ForwardedCount, &key.IsVerified, &sessionDataStr); err != nil {
return nil, err
}
key.SessionData = json.RawMessage(sessionDataStr)
roomData := result[key.RoomID]
if roomData == nil {
roomData = make(map[string]api.KeyBackupSession)
}
roomData[key.SessionID] = key.KeyBackupSession
result[key.RoomID] = roomData
}
return result, nil
}
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