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/*
* Copyright (C) 2011 Google 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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE 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 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.
*/
#include "config.h"
#include "IDBFactoryBackendImpl.h"
#include "DOMStringList.h"
#include "IDBBackingStore.h"
#include "IDBDatabaseBackendImpl.h"
#include "IDBDatabaseException.h"
#include "IDBTracing.h"
#include "IDBTransactionCoordinator.h"
#include "SecurityOrigin.h"
#if ENABLE(INDEXED_DATABASE)
namespace WebCore {
template<typename K, typename M>
static void cleanWeakMap(HashMap<K, WeakPtr<M> >& map)
{
HashMap<K, WeakPtr<M> > other;
other.swap(map);
typename HashMap<K, WeakPtr<M> >::const_iterator iter = other.begin();
while (iter != other.end()) {
if (iter->value.get())
map.set(iter->key, iter->value);
++iter;
}
}
static String computeFileIdentifier(SecurityOrigin* securityOrigin)
{
static const char levelDBFileSuffix[] = "@1";
return securityOrigin->databaseIdentifier() + levelDBFileSuffix;
}
static String computeUniqueIdentifier(const String& name, SecurityOrigin* securityOrigin)
{
return computeFileIdentifier(securityOrigin) + name;
}
IDBFactoryBackendImpl::IDBFactoryBackendImpl()
{
}
IDBFactoryBackendImpl::~IDBFactoryBackendImpl()
{
}
void IDBFactoryBackendImpl::removeIDBDatabaseBackend(const String& uniqueIdentifier)
{
ASSERT(m_databaseBackendMap.contains(uniqueIdentifier));
m_databaseBackendMap.remove(uniqueIdentifier);
}
void IDBFactoryBackendImpl::getDatabaseNames(PassRefPtr<IDBCallbacks> callbacks, PassRefPtr<SecurityOrigin> securityOrigin, ScriptExecutionContext*, const String& dataDirectory)
{
IDB_TRACE("IDBFactoryBackendImpl::getDatabaseNames");
RefPtr<IDBBackingStore> backingStore = openBackingStore(securityOrigin, dataDirectory);
if (!backingStore) {
callbacks->onError(IDBDatabaseError::create(IDBDatabaseException::UnknownError, "Internal error opening backing store for indexedDB.webkitGetDatabaseNames."));
return;
}
RefPtr<DOMStringList> databaseNames = DOMStringList::create();
Vector<String> foundNames = backingStore->getDatabaseNames();
for (Vector<String>::const_iterator it = foundNames.begin(); it != foundNames.end(); ++it)
databaseNames->append(*it);
callbacks->onSuccess(databaseNames.release());
}
void IDBFactoryBackendImpl::deleteDatabase(const String& name, PassRefPtr<IDBCallbacks> callbacks, PassRefPtr<SecurityOrigin> securityOrigin, ScriptExecutionContext*, const String& dataDirectory)
{
IDB_TRACE("IDBFactoryBackendImpl::deleteDatabase");
const String uniqueIdentifier = computeUniqueIdentifier(name, securityOrigin.get());
IDBDatabaseBackendMap::iterator it = m_databaseBackendMap.find(uniqueIdentifier);
if (it != m_databaseBackendMap.end()) {
// If there are any connections to the database, directly delete the
// database.
it->value->deleteDatabase(callbacks);
return;
}
// FIXME: Everything from now on should be done on another thread.
RefPtr<IDBBackingStore> backingStore = openBackingStore(securityOrigin, dataDirectory);
if (!backingStore) {
callbacks->onError(IDBDatabaseError::create(IDBDatabaseException::UnknownError, "Internal error opening backing store for indexedDB.deleteDatabase."));
return;
}
RefPtr<IDBDatabaseBackendImpl> databaseBackend = IDBDatabaseBackendImpl::create(name, backingStore.get(), this, uniqueIdentifier);
if (databaseBackend) {
m_databaseBackendMap.set(uniqueIdentifier, databaseBackend.get());
databaseBackend->deleteDatabase(callbacks);
m_databaseBackendMap.remove(uniqueIdentifier);
} else
callbacks->onError(IDBDatabaseError::create(IDBDatabaseException::UnknownError, "Internal error creating database backend for indexedDB.deleteDatabase."));
}
PassRefPtr<IDBBackingStore> IDBFactoryBackendImpl::openBackingStore(PassRefPtr<SecurityOrigin> securityOrigin, const String& dataDirectory)
{
const String fileIdentifier = computeFileIdentifier(securityOrigin.get());
const bool openInMemory = dataDirectory.isEmpty();
IDBBackingStoreMap::iterator it2 = m_backingStoreMap.find(fileIdentifier);
if (it2 != m_backingStoreMap.end() && it2->value.get())
return it2->value.get();
RefPtr<IDBBackingStore> backingStore;
if (openInMemory)
backingStore = IDBBackingStore::openInMemory(securityOrigin.get(), fileIdentifier);
else
backingStore = IDBBackingStore::open(securityOrigin.get(), dataDirectory, fileIdentifier);
if (backingStore) {
cleanWeakMap(m_backingStoreMap);
m_backingStoreMap.set(fileIdentifier, backingStore->createWeakPtr());
// If an in-memory database, bind lifetime to this factory instance.
if (openInMemory)
m_sessionOnlyBackingStores.add(backingStore);
// All backing stores associated with this factory should be of the same type.
ASSERT(m_sessionOnlyBackingStores.isEmpty() || openInMemory);
return backingStore.release();
}
return 0;
}
void IDBFactoryBackendImpl::open(const String& name, int64_t version, int64_t transactionId, PassRefPtr<IDBCallbacks> callbacks, PassRefPtr<IDBDatabaseCallbacks> databaseCallbacks, PassRefPtr<SecurityOrigin> prpSecurityOrigin, ScriptExecutionContext*, const String& dataDirectory)
{
IDB_TRACE("IDBFactoryBackendImpl::open");
RefPtr<SecurityOrigin> securityOrigin = prpSecurityOrigin;
const String uniqueIdentifier = computeUniqueIdentifier(name, securityOrigin.get());
RefPtr<IDBDatabaseBackendImpl> databaseBackend;
IDBDatabaseBackendMap::iterator it = m_databaseBackendMap.find(uniqueIdentifier);
if (it == m_databaseBackendMap.end()) {
RefPtr<IDBBackingStore> backingStore = openBackingStore(securityOrigin, dataDirectory);
if (!backingStore) {
callbacks->onError(IDBDatabaseError::create(IDBDatabaseException::UnknownError, "Internal error opening backing store for indexedDB.open."));
return;
}
databaseBackend = IDBDatabaseBackendImpl::create(name, backingStore.get(), this, uniqueIdentifier);
if (databaseBackend)
m_databaseBackendMap.set(uniqueIdentifier, databaseBackend.get());
else {
callbacks->onError(IDBDatabaseError::create(IDBDatabaseException::UnknownError, "Internal error creating database backend for indexeddb.open."));
return;
}
} else
databaseBackend = it->value;
databaseBackend->openConnection(callbacks, databaseCallbacks, transactionId, version);
}
} // namespace WebCore
#endif // ENABLE(INDEXED_DATABASE)
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