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// Copyright 2023 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 sqlite3
import (
"context"
"crypto/ed25519"
"database/sql"
"errors"
"strings"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/roomserver/storage/tables"
"github.com/matrix-org/dendrite/roomserver/types"
"github.com/matrix-org/gomatrixserverlib/spec"
)
const userRoomKeysSchema = `
CREATE TABLE IF NOT EXISTS roomserver_user_room_keys (
user_nid INTEGER NOT NULL,
room_nid INTEGER NOT NULL,
pseudo_id_key TEXT NULL, -- may be null for users not local to the server
pseudo_id_pub_key TEXT NOT NULL,
CONSTRAINT roomserver_user_room_keys_pk PRIMARY KEY (user_nid, room_nid)
);
`
const insertUserRoomKeySQL = `
INSERT INTO roomserver_user_room_keys (user_nid, room_nid, pseudo_id_key, pseudo_id_pub_key) VALUES ($1, $2, $3, $4)
ON CONFLICT DO UPDATE SET pseudo_id_key = roomserver_user_room_keys.pseudo_id_key
RETURNING (pseudo_id_key)
`
const insertUserRoomPublicKeySQL = `
INSERT INTO roomserver_user_room_keys (user_nid, room_nid, pseudo_id_pub_key) VALUES ($1, $2, $3)
ON CONFLICT DO UPDATE SET pseudo_id_pub_key = $3
RETURNING (pseudo_id_pub_key)
`
const selectUserRoomKeySQL = `SELECT pseudo_id_key FROM roomserver_user_room_keys WHERE user_nid = $1 AND room_nid = $2`
const selectUserRoomPublicKeySQL = `SELECT pseudo_id_pub_key FROM roomserver_user_room_keys WHERE user_nid = $1 AND room_nid = $2`
const selectUserNIDsSQL = `SELECT user_nid, room_nid, pseudo_id_pub_key FROM roomserver_user_room_keys WHERE room_nid IN ($1) AND pseudo_id_pub_key IN ($2)`
const selectAllUserRoomPublicKeyForUserSQL = `SELECT room_nid, pseudo_id_pub_key FROM roomserver_user_room_keys WHERE user_nid = $1`
type userRoomKeysStatements struct {
db *sql.DB
insertUserRoomPrivateKeyStmt *sql.Stmt
insertUserRoomPublicKeyStmt *sql.Stmt
selectUserRoomKeyStmt *sql.Stmt
selectUserRoomPublicKeyStmt *sql.Stmt
selectAllUserRoomPublicKeysForUser *sql.Stmt
//selectUserNIDsStmt *sql.Stmt //prepared at runtime
}
func CreateUserRoomKeysTable(db *sql.DB) error {
_, err := db.Exec(userRoomKeysSchema)
return err
}
func PrepareUserRoomKeysTable(db *sql.DB) (tables.UserRoomKeys, error) {
s := &userRoomKeysStatements{db: db}
return s, sqlutil.StatementList{
{&s.insertUserRoomPrivateKeyStmt, insertUserRoomKeySQL},
{&s.insertUserRoomPublicKeyStmt, insertUserRoomPublicKeySQL},
{&s.selectUserRoomKeyStmt, selectUserRoomKeySQL},
{&s.selectUserRoomPublicKeyStmt, selectUserRoomPublicKeySQL},
{&s.selectAllUserRoomPublicKeysForUser, selectAllUserRoomPublicKeyForUserSQL},
//{&s.selectUserNIDsStmt, selectUserNIDsSQL}, //prepared at runtime
}.Prepare(db)
}
func (s *userRoomKeysStatements) InsertUserRoomPrivatePublicKey(ctx context.Context, txn *sql.Tx, userNID types.EventStateKeyNID, roomNID types.RoomNID, key ed25519.PrivateKey) (result ed25519.PrivateKey, err error) {
stmt := sqlutil.TxStmtContext(ctx, txn, s.insertUserRoomPrivateKeyStmt)
err = stmt.QueryRowContext(ctx, userNID, roomNID, key, key.Public()).Scan(&result)
return result, err
}
func (s *userRoomKeysStatements) InsertUserRoomPublicKey(ctx context.Context, txn *sql.Tx, userNID types.EventStateKeyNID, roomNID types.RoomNID, key ed25519.PublicKey) (result ed25519.PublicKey, err error) {
stmt := sqlutil.TxStmtContext(ctx, txn, s.insertUserRoomPublicKeyStmt)
err = stmt.QueryRowContext(ctx, userNID, roomNID, key).Scan(&result)
return result, err
}
func (s *userRoomKeysStatements) SelectUserRoomPrivateKey(
ctx context.Context,
txn *sql.Tx,
userNID types.EventStateKeyNID,
roomNID types.RoomNID,
) (ed25519.PrivateKey, error) {
stmt := sqlutil.TxStmtContext(ctx, txn, s.selectUserRoomKeyStmt)
var result ed25519.PrivateKey
err := stmt.QueryRowContext(ctx, userNID, roomNID).Scan(&result)
if errors.Is(err, sql.ErrNoRows) {
return nil, nil
}
return result, err
}
func (s *userRoomKeysStatements) SelectUserRoomPublicKey(
ctx context.Context,
txn *sql.Tx,
userNID types.EventStateKeyNID,
roomNID types.RoomNID,
) (ed25519.PublicKey, error) {
stmt := sqlutil.TxStmtContext(ctx, txn, s.selectUserRoomPublicKeyStmt)
var result ed25519.PublicKey
err := stmt.QueryRowContext(ctx, userNID, roomNID).Scan(&result)
if errors.Is(err, sql.ErrNoRows) {
return nil, nil
}
return result, err
}
func (s *userRoomKeysStatements) BulkSelectUserNIDs(ctx context.Context, txn *sql.Tx, senderKeys map[types.RoomNID][]ed25519.PublicKey) (map[string]types.UserRoomKeyPair, error) {
roomNIDs := make([]any, 0, len(senderKeys))
var senders []any
for roomNID := range senderKeys {
roomNIDs = append(roomNIDs, roomNID)
for _, key := range senderKeys[roomNID] {
senders = append(senders, []byte(key))
}
}
selectSQL := strings.Replace(selectUserNIDsSQL, "($2)", sqlutil.QueryVariadicOffset(len(senders), len(senderKeys)), 1)
selectSQL = strings.Replace(selectSQL, "($1)", sqlutil.QueryVariadic(len(senderKeys)), 1) // replace $1 with the roomNIDs
selectStmt, err := s.db.Prepare(selectSQL)
if err != nil {
return nil, err
}
params := append(roomNIDs, senders...)
stmt := sqlutil.TxStmt(txn, selectStmt)
defer internal.CloseAndLogIfError(ctx, stmt, "failed to close statement")
rows, err := stmt.QueryContext(ctx, params...)
if err != nil {
return nil, err
}
defer internal.CloseAndLogIfError(ctx, rows, "failed to close rows")
result := make(map[string]types.UserRoomKeyPair, len(params))
var publicKey []byte
userRoomKeyPair := types.UserRoomKeyPair{}
for rows.Next() {
if err = rows.Scan(&userRoomKeyPair.EventStateKeyNID, &userRoomKeyPair.RoomNID, &publicKey); err != nil {
return nil, err
}
result[spec.Base64Bytes(publicKey).Encode()] = userRoomKeyPair
}
return result, rows.Err()
}
func (s *userRoomKeysStatements) SelectAllPublicKeysForUser(ctx context.Context, txn *sql.Tx, userNID types.EventStateKeyNID) (map[types.RoomNID]ed25519.PublicKey, error) {
stmt := sqlutil.TxStmtContext(ctx, txn, s.selectAllUserRoomPublicKeysForUser)
rows, err := stmt.QueryContext(ctx, userNID)
if errors.Is(err, sql.ErrNoRows) {
return nil, nil
}
defer internal.CloseAndLogIfError(ctx, rows, "SelectAllPublicKeysForUser: failed to close rows")
resultMap := make(map[types.RoomNID]ed25519.PublicKey)
var roomNID types.RoomNID
var pubkey ed25519.PublicKey
for rows.Next() {
if err = rows.Scan(&roomNID, &pubkey); err != nil {
return nil, err
}
resultMap[roomNID] = pubkey
}
return resultMap, rows.Err()
}
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