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/*
* Copyright (C) 2008 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. ``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
* 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 "LocalStorage.h"
#include "CString.h"
#include "EventNames.h"
#include "FileSystem.h"
#include "Frame.h"
#include "FrameTree.h"
#include "LocalStorageArea.h"
#include "Page.h"
#include "PageGroup.h"
#include "StorageArea.h"
#include <wtf/StdLibExtras.h>
namespace WebCore {
typedef HashMap<String, LocalStorage*> LocalStorageMap;
static LocalStorageMap& localStorageMap()
{
DEFINE_STATIC_LOCAL(LocalStorageMap, localStorageMap, ());
return localStorageMap;
}
PassRefPtr<LocalStorage> LocalStorage::localStorage(const String& path)
{
const String lookupPath = path.isNull() ? String("") : path;
LocalStorageMap::iterator it = localStorageMap().find(lookupPath);
if (it == localStorageMap().end()) {
RefPtr<LocalStorage> localStorage = adoptRef(new LocalStorage(lookupPath));
localStorageMap().set(lookupPath, localStorage.get());
return localStorage.release();
}
return it->second;
}
LocalStorage::LocalStorage(const String& path)
: m_path(path.copy())
{
// If the path is empty, we know we're never going to be using the thread for anything, so don't start it.
// In the future, we might also want to consider removing it from the DOM in that case - <rdar://problem/5960470>
if (path.isEmpty())
return;
m_thread = LocalStorageThread::create();
m_thread->start();
m_thread->scheduleImport(this);
}
LocalStorage::~LocalStorage()
{
ASSERT(localStorageMap().get(m_path) == this);
localStorageMap().remove(m_path);
}
PassRefPtr<StorageArea> LocalStorage::storageArea(SecurityOrigin* origin)
{
ASSERT(isMainThread());
// FIXME: If the security origin in question has never had a storage area established,
// we need to ask a client call if establishing it is okay. If the client denies the request,
// this method will return null.
// The sourceFrame argument exists for the purpose of asking a client.
// To know if an area has previously been established, we need to wait until this LocalStorage
// object has finished it's AreaImport task.
// FIXME: If the storage area is being established for the first time here, we need to
// sync its existance and quota out to disk via an task of type AreaSync
RefPtr<LocalStorageArea> storageArea;
if (storageArea = m_storageAreaMap.get(origin))
return storageArea.release();
storageArea = LocalStorageArea::create(origin, this);
m_storageAreaMap.set(origin, storageArea);
return storageArea.release();
}
String LocalStorage::fullDatabaseFilename(SecurityOrigin* origin)
{
// FIXME: Once we actually track origin/quota entries to see which origins have local storage established,
// we will return an empty path name if the origin isn't allowed to have LocalStorage.
// We'll need to wait here until the AreaImport task to complete before making that decision.
if (m_path.isEmpty())
return String();
ASSERT(origin);
if (!origin)
return String();
if (!makeAllDirectories(m_path)) {
LOG_ERROR("Unabled to create LocalStorage database path %s", m_path.utf8().data());
return String();
}
return pathByAppendingComponent(m_path, origin->databaseIdentifier() + ".localstorage");
}
void LocalStorage::performImport()
{
ASSERT(!isMainThread());
// FIXME: Import all known local storage origins here along with their quotas
}
void LocalStorage::performSync()
{
ASSERT(!isMainThread());
// FIXME: Write out new origins and quotas here
}
void LocalStorage::close()
{
ASSERT(isMainThread());
LocalStorageAreaMap::iterator end = m_storageAreaMap.end();
for (LocalStorageAreaMap::iterator it = m_storageAreaMap.begin(); it != end; ++it)
it->second->scheduleFinalSync();
if (m_thread) {
m_thread->terminate();
m_thread = 0;
}
}
bool LocalStorage::scheduleImport(PassRefPtr<LocalStorageArea> area)
{
ASSERT(isMainThread());
if (m_thread)
m_thread->scheduleImport(area);
return m_thread;
}
void LocalStorage::scheduleSync(PassRefPtr<LocalStorageArea> area)
{
ASSERT(isMainThread());
if (m_thread)
m_thread->scheduleSync(area);
}
} // namespace WebCore
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