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/*
* Copyright (C) 2016-2021 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "IDBBackingStore.h"
#include "IDBDatabaseIdentifier.h"
#include "IDBDatabaseInfo.h"
#include "IDBDatabaseNameAndVersion.h"
#include "IDBIndexIdentifier.h"
#include "IDBObjectStoreIdentifier.h"
#include "IDBResourceIdentifier.h"
#include "SQLiteIDBTransaction.h"
#include "SQLiteStatementAutoResetScope.h"
#include <JavaScriptCore/Strong.h>
#include <pal/SessionID.h>
#include <wtf/HashMap.h>
#include <wtf/TZoneMalloc.h>
namespace WebCore {
class IndexKey;
class SQLiteDatabase;
class SQLiteStatement;
namespace IDBServer {
enum class IsSchemaUpgraded : bool { No, Yes };
class SQLiteIDBCursor;
class SQLiteIDBBackingStore final : public IDBBackingStore {
WTF_MAKE_TZONE_ALLOCATED_EXPORT(SQLiteIDBBackingStore, WEBCORE_EXPORT);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(SQLiteIDBBackingStore);
public:
WEBCORE_EXPORT SQLiteIDBBackingStore(const IDBDatabaseIdentifier&, const String& databaseDirectory);
WEBCORE_EXPORT ~SQLiteIDBBackingStore() final;
IDBError getOrEstablishDatabaseInfo(IDBDatabaseInfo&) final;
uint64_t databaseVersion() final;
IDBError beginTransaction(const IDBTransactionInfo&) final;
IDBError abortTransaction(const IDBResourceIdentifier& transactionIdentifier) final;
IDBError commitTransaction(const IDBResourceIdentifier& transactionIdentifier) final;
IDBError createObjectStore(const IDBResourceIdentifier& transactionIdentifier, const IDBObjectStoreInfo&) final;
IDBError deleteObjectStore(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier) final;
IDBError renameObjectStore(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, const String& newName) final;
IDBError clearObjectStore(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier) final;
IDBError createIndex(const IDBResourceIdentifier& transactionIdentifier, const IDBIndexInfo&) final;
IDBError deleteIndex(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, IDBIndexIdentifier) final;
IDBError renameIndex(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, IDBIndexIdentifier, const String& newName) final;
IDBError keyExistsInObjectStore(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, const IDBKeyData&, bool& keyExists) final;
IDBError deleteRange(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, const IDBKeyRangeData&) final;
IDBError addRecord(const IDBResourceIdentifier& transactionIdentifier, const IDBObjectStoreInfo&, const IDBKeyData&, const IndexIDToIndexKeyMap&, const IDBValue&) final;
IDBError getRecord(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, const IDBKeyRangeData&, IDBGetRecordDataType, IDBGetResult& outValue) final;
IDBError getAllRecords(const IDBResourceIdentifier& transactionIdentifier, const IDBGetAllRecordsData&, IDBGetAllResult& outValue) final;
IDBError getIndexRecord(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, IDBIndexIdentifier, IndexedDB::IndexRecordType, const IDBKeyRangeData&, IDBGetResult& outValue) final;
IDBError getCount(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, std::optional<IDBIndexIdentifier>, const IDBKeyRangeData&, uint64_t& outCount) final;
IDBError generateKeyNumber(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, uint64_t& keyNumber) final;
IDBError revertGeneratedKeyNumber(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, uint64_t keyNumber) final;
IDBError maybeUpdateKeyGeneratorNumber(const IDBResourceIdentifier& transactionIdentifier, IDBObjectStoreIdentifier, double newKeyNumber) final;
IDBError openCursor(const IDBResourceIdentifier& transactionIdentifier, const IDBCursorInfo&, IDBGetResult& outResult) final;
IDBError iterateCursor(const IDBResourceIdentifier& transactionIdentifier, const IDBResourceIdentifier& cursorIdentifier, const IDBIterateCursorData&, IDBGetResult& outResult) final;
IDBObjectStoreInfo* infoForObjectStore(IDBObjectStoreIdentifier) final;
void deleteBackingStore() final;
bool supportsSimultaneousReadWriteTransactions() final { return false; }
bool isEphemeral() final { return false; }
String fullDatabasePath() const final;
bool hasTransaction(const IDBResourceIdentifier&) const final;
void unregisterCursor(SQLiteIDBCursor&);
IDBError getBlobRecordsForObjectStoreRecord(int64_t objectStoreRecord, Vector<String>& blobURLs, Vector<String>& blobFilePaths);
WEBCORE_EXPORT static uint64_t databasesSizeForDirectory(const String& directory);
String databaseDirectory() const { return m_databaseDirectory; };
WEBCORE_EXPORT static String fullDatabasePathForDirectory(const String&);
WEBCORE_EXPORT static String encodeDatabaseName(const String& databaseName);
WEBCORE_EXPORT static String decodeDatabaseName(const String& encodedDatabaseName);
WEBCORE_EXPORT static std::optional<IDBDatabaseNameAndVersion> databaseNameAndVersionFromFile(const String&);
void handleLowMemoryWarning() final;
private:
IDBError ensureValidRecordsTable();
IDBError ensureValidIndexRecordsTable();
IDBError ensureValidIndexRecordsIndex();
IDBError ensureValidIndexRecordsRecordIndex();
IDBError ensureValidBlobTables();
std::optional<IsSchemaUpgraded> ensureValidObjectStoreInfoTable();
std::unique_ptr<IDBDatabaseInfo> createAndPopulateInitialDatabaseInfo();
std::unique_ptr<IDBDatabaseInfo> extractExistingDatabaseInfo();
IDBError deleteRecord(SQLiteIDBTransaction&, IDBObjectStoreIdentifier, const IDBKeyData&);
IDBError uncheckedGetKeyGeneratorValue(IDBObjectStoreIdentifier, uint64_t& outValue);
IDBError uncheckedSetKeyGeneratorValue(IDBObjectStoreIdentifier, uint64_t value);
IDBError updateAllIndexesForAddRecord(const IDBObjectStoreInfo&, const IDBKeyData&, const IndexIDToIndexKeyMap&, int64_t recordID);
IDBError updateOneIndexForAddRecord(IDBObjectStoreInfo&, const IDBIndexInfo&, const IDBKeyData&, const ThreadSafeDataBuffer& value, int64_t recordID);
IDBError uncheckedPutIndexKey(const IDBIndexInfo&, const IDBKeyData& keyValue, const IndexKey&, int64_t recordID);
IDBError uncheckedPutIndexRecord(IDBObjectStoreIdentifier, IDBIndexIdentifier, const IDBKeyData& keyValue, const IDBKeyData& indexKey, int64_t recordID);
IDBError uncheckedHasIndexRecord(const IDBIndexInfo&, const IDBKeyData&, bool& hasRecord);
IDBError uncheckedGetIndexRecordForOneKey(IDBIndexIdentifier, IDBObjectStoreIdentifier, IndexedDB::IndexRecordType, const IDBKeyData&, IDBGetResult&);
IDBError deleteUnusedBlobFileRecords(SQLiteIDBTransaction&);
IDBError getAllObjectStoreRecords(const IDBResourceIdentifier& transactionIdentifier, const IDBGetAllRecordsData&, IDBGetAllResult& outValue);
IDBError getAllIndexRecords(const IDBResourceIdentifier& transactionIdentifier, const IDBGetAllRecordsData&, IDBGetAllResult& outValue);
void closeSQLiteDB();
void close() final;
bool migrateIndexInfoTableForIDUpdate(const HashMap<std::pair<IDBObjectStoreIdentifier, IDBIndexIdentifier>, IDBIndexIdentifier>& indexIDMap);
bool migrateIndexRecordsTableForIDUpdate(const HashMap<std::pair<IDBObjectStoreIdentifier, IDBIndexIdentifier>, IDBIndexIdentifier>& indexIDMap);
enum class SQL : size_t {
CreateObjectStoreInfo,
CreateObjectStoreKeyGenerator,
DeleteObjectStoreInfo,
DeleteObjectStoreKeyGenerator,
DeleteObjectStoreRecords,
DeleteObjectStoreIndexInfo,
DeleteObjectStoreIndexRecords,
DeleteObjectStoreBlobRecords,
RenameObjectStore,
ClearObjectStoreRecords,
ClearObjectStoreIndexRecords,
CreateIndexInfo,
CreateTempIndexInfo,
DeleteIndexInfo,
RemoveIndexInfo,
HasIndexRecord,
PutIndexRecord,
PutTempIndexRecord,
GetIndexRecordForOneKey,
DeleteIndexRecords,
RenameIndex,
KeyExistsInObjectStore,
GetUnusedBlobFilenames,
DeleteUnusedBlobs,
GetObjectStoreRecord,
DeleteBlobRecord,
DeleteObjectStoreRecord,
DeleteObjectStoreIndexRecord,
AddObjectStoreRecord,
AddBlobRecord,
BlobFilenameForBlobURL,
AddBlobFilename,
GetBlobURL,
GetKeyGeneratorValue,
SetKeyGeneratorValue,
GetObjectStoreRecords,
GetAllKeyRecordsLowerOpenUpperOpen,
GetAllKeyRecordsLowerOpenUpperClosed,
GetAllKeyRecordsLowerClosedUpperOpen,
GetAllKeyRecordsLowerClosedUpperClosed,
GetValueRecordsLowerOpenUpperOpen,
GetValueRecordsLowerOpenUpperClosed,
GetValueRecordsLowerClosedUpperOpen,
GetValueRecordsLowerClosedUpperClosed,
GetKeyRecordsLowerOpenUpperOpen,
GetKeyRecordsLowerOpenUpperClosed,
GetKeyRecordsLowerClosedUpperOpen,
GetKeyRecordsLowerClosedUpperClosed,
CountRecordsLowerOpenUpperOpen,
CountRecordsLowerOpenUpperClosed,
CountRecordsLowerClosedUpperOpen,
CountRecordsLowerClosedUpperClosed,
CountIndexRecordsLowerOpenUpperOpen,
CountIndexRecordsLowerOpenUpperClosed,
CountIndexRecordsLowerClosedUpperOpen,
CountIndexRecordsLowerClosedUpperClosed,
Invalid,
};
SQLiteStatementAutoResetScope cachedStatement(SQL, ASCIILiteral);
SQLiteStatementAutoResetScope cachedStatementForGetAllObjectStoreRecords(const IDBGetAllRecordsData&);
std::array<std::unique_ptr<SQLiteStatement>, static_cast<size_t>(SQL::Invalid)> m_cachedStatements;
IDBDatabaseIdentifier m_identifier;
std::unique_ptr<IDBDatabaseInfo> m_databaseInfo;
std::unique_ptr<IDBDatabaseInfo> m_originalDatabaseInfoBeforeVersionChange;
std::unique_ptr<SQLiteDatabase> m_sqliteDB;
HashMap<IDBResourceIdentifier, std::unique_ptr<SQLiteIDBTransaction>> m_transactions;
HashMap<IDBResourceIdentifier, SQLiteIDBCursor*> m_cursors;
String m_databaseDirectory;
};
} // namespace IDBServer
} // namespace WebCore
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