bool DatabaseTracker::deleteDatabase(SecurityOrigin* origin, const String& name)
{
{
LockHolder lockDatabase(m_databaseGuard);
openTrackerDatabase(DontCreateIfDoesNotExist);
if (!m_database.isOpen())
return false;
if (!canDeleteDatabase(origin, name)) {
ASSERT_NOT_REACHED();
return false;
}
recordDeletingDatabase(origin, name);
}
// We drop the lock here because holding locks during a call to deleteDatabaseFile will deadlock.
if (!deleteDatabaseFile(origin, name, DeletionMode::Default)) {
LOG_ERROR("Unable to delete file for database %s in origin %s", name.ascii().data(), origin->databaseIdentifier().ascii().data());
LockHolder lockDatabase(m_databaseGuard);
doneDeletingDatabase(origin, name);
return false;
}
LockHolder lockDatabase(m_databaseGuard);
SQLiteStatement statement(m_database, "DELETE FROM Databases WHERE origin=? AND name=?");
if (statement.prepare() != SQLITE_OK) {
LOG_ERROR("Unable to prepare deletion of database %s from origin %s from tracker", name.ascii().data(), origin->databaseIdentifier().ascii().data());
doneDeletingDatabase(origin, name);
return false;
}
statement.bindText(1, origin->databaseIdentifier());
statement.bindText(2, name);
if (!statement.executeCommand()) {
LOG_ERROR("Unable to execute deletion of database %s from origin %s from tracker", name.ascii().data(), origin->databaseIdentifier().ascii().data());
doneDeletingDatabase(origin, name);
return false;
}
if (m_client) {
m_client->dispatchDidModifyOrigin(origin);
m_client->dispatchDidModifyDatabase(origin, name);
#if PLATFORM(IOS)
m_client->dispatchDidDeleteDatabase();
#endif
}
doneDeletingDatabase(origin, name);
return true;
}
// It is the caller's responsibility to make sure that nobody is trying to create, delete, open, or close databases in this origin while the deletion is
// taking place.
bool DatabaseTracker::deleteOrigin(SecurityOrigin* origin)
{
Vector<String> databaseNames;
{
MutexLocker lockDatabase(m_databaseGuard);
openTrackerDatabase(DontCreateIfDoesNotExist);
if (!m_database.isOpen())
return false;
if (!databaseNamesForOriginNoLock(origin, databaseNames)) {
LOG_ERROR("Unable to retrieve list of database names for origin %s", origin->databaseIdentifier().ascii().data());
return false;
}
if (!canDeleteOrigin(origin)) {
LOG_ERROR("Tried to delete an origin (%s) while either creating database in it or already deleting it", origin->databaseIdentifier().ascii().data());
ASSERT_NOT_REACHED();
return false;
}
recordDeletingOrigin(origin);
}
// We drop the lock here because holding locks during a call to deleteDatabaseFile will deadlock.
for (unsigned i = 0; i < databaseNames.size(); ++i) {
if (!deleteDatabaseFile(origin, databaseNames[i])) {
// Even if the file can't be deleted, we want to try and delete the rest, don't return early here.
LOG_ERROR("Unable to delete file for database %s in origin %s", databaseNames[i].ascii().data(), origin->databaseIdentifier().ascii().data());
}
}
{
MutexLocker lockDatabase(m_databaseGuard);
deleteOriginLockFor(origin);
doneDeletingOrigin(origin);
SQLiteStatement statement(m_database, "DELETE FROM Databases WHERE origin=?");
if (statement.prepare() != SQLResultOk) {
LOG_ERROR("Unable to prepare deletion of databases from origin %s from tracker", origin->databaseIdentifier().ascii().data());
return false;
}
statement.bindText(1, origin->databaseIdentifier());
if (!statement.executeCommand()) {
LOG_ERROR("Unable to execute deletion of databases from origin %s from tracker", origin->databaseIdentifier().ascii().data());
return false;
}
SQLiteStatement originStatement(m_database, "DELETE FROM Origins WHERE origin=?");
if (originStatement.prepare() != SQLResultOk) {
LOG_ERROR("Unable to prepare deletion of origin %s from tracker", origin->databaseIdentifier().ascii().data());
return false;
}
originStatement.bindText(1, origin->databaseIdentifier());
if (!originStatement.executeCommand()) {
LOG_ERROR("Unable to execute deletion of databases from origin %s from tracker", origin->databaseIdentifier().ascii().data());
return false;
}
SQLiteFileSystem::deleteEmptyDatabaseDirectory(originPath(origin));
RefPtr<SecurityOrigin> originPossiblyLastReference = origin;
bool isEmpty = true;
openTrackerDatabase(DontCreateIfDoesNotExist);
if (m_database.isOpen()) {
SQLiteStatement statement(m_database, "SELECT origin FROM Origins");
if (statement.prepare() != SQLResultOk)
LOG_ERROR("Failed to prepare statement.");
else if (statement.step() == SQLResultRow)
isEmpty = false;
}
// If we removed the last origin, do some additional deletion.
if (isEmpty) {
if (m_database.isOpen())
m_database.close();
SQLiteFileSystem::deleteDatabaseFile(trackerDatabasePath());
SQLiteFileSystem::deleteEmptyDatabaseDirectory(m_databaseDirectoryPath);
}
if (m_client) {
m_client->dispatchDidModifyOrigin(origin);
for (unsigned i = 0; i < databaseNames.size(); ++i)
m_client->dispatchDidModifyDatabase(origin, databaseNames[i]);
}
}
return true;
}
