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// SPDX-FileCopyrightText: 2021 Tobias Fella <fella@posteo.de>
// SPDX-License-Identifier: LGPL-2.1-or-later
#include "database.h"
#include <QtSql/QSqlDatabase>
#include <QtSql/QSqlQuery>
#include <QtSql/QSqlError>
#include <QtCore/QStandardPaths>
#include <QtCore/QDebug>
#include <QtCore/QDir>
#include "e2ee/e2ee.h"
#include "e2ee/qolmsession.h"
#include "e2ee/qolminboundsession.h"
using namespace Quotient;
Database::Database(const QString& matrixId, const QString& deviceId, QObject* parent)
: QObject(parent)
, m_matrixId(matrixId)
{
m_matrixId.replace(':', '_');
QSqlDatabase::addDatabase(QStringLiteral("QSQLITE"), QStringLiteral("Quotient_%1").arg(m_matrixId));
QString databasePath = QStandardPaths::writableLocation(QStandardPaths::AppDataLocation) + QStringLiteral("/%1").arg(m_matrixId);
QDir(databasePath).mkpath(databasePath);
database().setDatabaseName(databasePath + QStringLiteral("/quotient_%1.db3").arg(deviceId));
database().open();
switch(version()) {
case 0: migrateTo1();
case 1: migrateTo2();
}
}
int Database::version()
{
auto query = execute(QStringLiteral("PRAGMA user_version;"));
if (query.next()) {
bool ok;
int value = query.value(0).toInt(&ok);
qCDebug(DATABASE) << "Database version" << value;
if (ok)
return value;
} else {
qCritical() << "Failed to check database version";
}
return -1;
}
QSqlQuery Database::execute(const QString &queryString)
{
auto query = database().exec(queryString);
if (query.lastError().type() != QSqlError::NoError) {
qCritical() << "Failed to execute query";
qCritical() << query.lastQuery();
qCritical() << query.lastError();
}
return query;
}
QSqlQuery Database::execute(QSqlQuery &query)
{
if (!query.exec()) {
qCritical() << "Failed to execute query";
qCritical() << query.lastQuery();
qCritical() << query.lastError();
}
return query;
}
void Database::transaction()
{
database().transaction();
}
void Database::commit()
{
database().commit();
}
void Database::migrateTo1()
{
qCDebug(DATABASE) << "Migrating database to version 1";
transaction();
execute(QStringLiteral("CREATE TABLE accounts (pickle TEXT);"));
execute(QStringLiteral("CREATE TABLE olm_sessions (senderKey TEXT, sessionId TEXT, pickle TEXT);"));
execute(QStringLiteral("CREATE TABLE inbound_megolm_sessions (roomId TEXT, senderKey TEXT, sessionId TEXT, pickle TEXT);"));
execute(QStringLiteral("CREATE TABLE outbound_megolm_sessions (roomId TEXT, senderKey TEXT, sessionId TEXT, pickle TEXT);"));
execute(QStringLiteral("CREATE TABLE group_session_record_index (roomId TEXT, sessionId TEXT, i INTEGER, eventId TEXT, ts INTEGER);"));
execute(QStringLiteral("CREATE TABLE tracked_users (matrixId TEXT);"));
execute(QStringLiteral("CREATE TABLE outdated_users (matrixId TEXT);"));
execute(QStringLiteral("CREATE TABLE tracked_devices (matrixId TEXT, deviceId TEXT, curveKeyId TEXT, curveKey TEXT, edKeyId TEXT, edKey TEXT);"));
execute(QStringLiteral("PRAGMA user_version = 1;"));
commit();
}
void Database::migrateTo2()
{
qCDebug(DATABASE) << "Migrating database to version 2";
transaction();
execute(QStringLiteral("ALTER TABLE inbound_megolm_sessions ADD ed25519Key TEXT"));
execute(QStringLiteral("PRAGMA user_version = 2;"));
commit();
}
QByteArray Database::accountPickle()
{
auto query = prepareQuery(QStringLiteral("SELECT pickle FROM accounts;"));
execute(query);
if (query.next()) {
return query.value(QStringLiteral("pickle")).toByteArray();
}
return {};
}
void Database::setAccountPickle(const QByteArray &pickle)
{
auto deleteQuery = prepareQuery(QStringLiteral("DELETE FROM accounts;"));
auto query = prepareQuery(QStringLiteral("INSERT INTO accounts(pickle) VALUES(:pickle);"));
query.bindValue(":pickle", pickle);
transaction();
execute(deleteQuery);
execute(query);
commit();
}
void Database::clear()
{
auto query = prepareQuery(QStringLiteral("DELETE FROM accounts;"));
auto sessionsQuery = prepareQuery(QStringLiteral("DELETE FROM olm_sessions;"));
auto megolmSessionsQuery = prepareQuery(QStringLiteral("DELETE FROM inbound_megolm_sessions;"));
auto groupSessionIndexRecordQuery = prepareQuery(QStringLiteral("DELETE FROM group_session_record_index;"));
transaction();
execute(query);
execute(sessionsQuery);
execute(megolmSessionsQuery);
execute(groupSessionIndexRecordQuery);
commit();
}
void Database::saveOlmSession(const QString& senderKey, const QString& sessionId, const QByteArray &pickle)
{
auto query = prepareQuery(QStringLiteral("INSERT INTO olm_sessions(senderKey, sessionId, pickle) VALUES(:senderKey, :sessionId, :pickle);"));
query.bindValue(":senderKey", senderKey);
query.bindValue(":sessionId", sessionId);
query.bindValue(":pickle", pickle);
transaction();
execute(query);
commit();
}
UnorderedMap<QString, std::vector<QOlmSessionPtr>> Database::loadOlmSessions(const PicklingMode& picklingMode)
{
auto query = prepareQuery(QStringLiteral("SELECT * FROM olm_sessions;"));
transaction();
execute(query);
commit();
UnorderedMap<QString, std::vector<QOlmSessionPtr>> sessions;
while (query.next()) {
auto session = QOlmSession::unpickle(query.value("pickle").toByteArray(), picklingMode);
if (std::holds_alternative<QOlmError>(session)) {
qCWarning(E2EE) << "Failed to unpickle olm session";
continue;
}
sessions[query.value("senderKey").toString()].push_back(std::move(std::get<QOlmSessionPtr>(session)));
}
return sessions;
}
UnorderedMap<std::pair<QString, QString>, QOlmInboundGroupSessionPtr> Database::loadMegolmSessions(const QString& roomId, const PicklingMode& picklingMode)
{
auto query = prepareQuery(QStringLiteral("SELECT * FROM inbound_megolm_sessions WHERE roomId=:roomId;"));
query.bindValue(":roomId", roomId);
transaction();
execute(query);
commit();
UnorderedMap<std::pair<QString, QString>, QOlmInboundGroupSessionPtr> sessions;
while (query.next()) {
auto session = QOlmInboundGroupSession::unpickle(query.value("pickle").toByteArray(), picklingMode);
if (std::holds_alternative<QOlmError>(session)) {
qCWarning(E2EE) << "Failed to unpickle megolm session";
continue;
}
sessions[{query.value("senderKey").toString(), query.value("sessionId").toString()}] = std::move(std::get<QOlmInboundGroupSessionPtr>(session));
}
return sessions;
}
void Database::saveMegolmSession(const QString& roomId, const QString& senderKey, const QString& sessionId, const QString& ed25519Key, const QByteArray& pickle)
{
auto query = prepareQuery(QStringLiteral("INSERT INTO inbound_megolm_sessions(roomId, senderKey, sessionId, ed25519Key, pickle) VALUES(:roomId, :senderKey, :sessionId, :ed25519Key, :pickle);"));
query.bindValue(":roomId", roomId);
query.bindValue(":senderKey", senderKey);
query.bindValue(":sessionId", sessionId);
query.bindValue(":ed25519Key", ed25519Key);
query.bindValue(":pickle", pickle);
transaction();
execute(query);
commit();
}
void Database::addGroupSessionIndexRecord(const QString& roomId, const QString& sessionId, uint32_t index, const QString& eventId, qint64 ts)
{
auto query = prepareQuery("INSERT INTO group_session_record_index(roomId, sessionId, i, eventId, ts) VALUES(:roomId, :sessionId, :index, :eventId, :ts);");
query.bindValue(":roomId", roomId);
query.bindValue(":sessionId", sessionId);
query.bindValue(":index", index);
query.bindValue(":eventId", eventId);
query.bindValue(":ts", ts);
transaction();
execute(query);
commit();
}
std::pair<QString, qint64> Database::groupSessionIndexRecord(const QString& roomId, const QString& sessionId, qint64 index)
{
auto query = prepareQuery(QStringLiteral("SELECT * FROM group_session_record_index WHERE roomId=:roomId AND sessionId=:sessionId AND i=:index;"));
query.bindValue(":roomId", roomId);
query.bindValue(":sessionId", sessionId);
query.bindValue(":index", index);
transaction();
execute(query);
commit();
if (!query.next()) {
return {};
}
return {query.value("eventId").toString(), query.value("ts").toLongLong()};
}
QSqlDatabase Database::database()
{
return QSqlDatabase::database(QStringLiteral("Quotient_%1").arg(m_matrixId));
}
QSqlQuery Database::prepareQuery(const QString& queryString)
{
QSqlQuery query(database());
query.prepare(queryString);
return query;
}
void Database::clearRoomData(const QString& roomId)
{
auto query = prepareQuery(QStringLiteral("DELETE FROM inbound_megolm_sessions WHERE roomId=:roomId;"));
auto query2 = prepareQuery(QStringLiteral("DELETE FROM outbound_megolm_sessions WHERE roomId=:roomId;"));
auto query3 = prepareQuery(QStringLiteral("DELETE FROM group_session_record_index WHERE roomId=:roomId;"));
transaction();
execute(query);
execute(query2);
execute(query3);
commit();
}
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