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/*
* Copyright (C) 2009 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER 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.
*/
#ifndef DOMWrapperWorld_h
#define DOMWrapperWorld_h
#include "SecurityOrigin.h"
#include "V8PerContextData.h"
#include <v8.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class DOMDataStore;
// This class represent a collection of DOM wrappers for a specific world.
class DOMWrapperWorld : public RefCounted<DOMWrapperWorld> {
public:
static const int mainWorldId = 0;
static const int mainWorldExtensionGroup = 0;
static const int uninitializedWorldId = -1;
static const int uninitializedExtensionGroup = -1;
// If uninitializedWorldId is passed as worldId, the world will be assigned a temporary id instead.
static PassRefPtr<DOMWrapperWorld> ensureIsolatedWorld(int worldId, int extensionGroup);
~DOMWrapperWorld();
static bool isolatedWorldsExist() { return isolatedWorldCount; }
static bool isIsolatedWorldId(int worldId) { return worldId != mainWorldId && worldId != uninitializedWorldId; }
static void getAllWorlds(Vector<RefPtr<DOMWrapperWorld> >& worlds);
void makeContextWeak(v8::Handle<v8::Context>);
void setIsolatedWorldField(v8::Handle<v8::Context>);
#ifndef NDEBUG
static void assertContextHasCorrectPrototype(v8::Handle<v8::Context>);
#endif
static DOMWrapperWorld* isolated(v8::Handle<v8::Context> context)
{
#ifndef NDEBUG
assertContextHasCorrectPrototype(context);
#endif
return static_cast<DOMWrapperWorld*>(context->GetAlignedPointerFromEmbedderData(v8ContextIsolatedWorld));
}
// Associates an isolated world (see above for description) with a security
// origin. XMLHttpRequest instances used in that world will be considered
// to come from that origin, not the frame's.
static void setIsolatedWorldSecurityOrigin(int worldID, PassRefPtr<SecurityOrigin>);
static void clearIsolatedWorldSecurityOrigin(int worldID);
SecurityOrigin* isolatedWorldSecurityOrigin();
// Associated an isolated world with a Content Security Policy. Resources
// embedded into the main world's DOM from script executed in an isolated
// world should be restricted based on the isolated world's DOM, not the
// main world's.
//
// FIXME: Right now, resource injection simply bypasses the main world's
// DOM. More work is necessary to allow the isolated world's policy to be
// applied correctly.
static void setIsolatedWorldContentSecurityPolicy(int worldID, const String& policy);
static void clearIsolatedWorldContentSecurityPolicy(int worldID);
bool isolatedWorldHasContentSecurityPolicy();
// FIXME: this is a workaround for a problem in WebViewImpl.
// Do not use this anywhere else!!
static PassRefPtr<DOMWrapperWorld> createUninitializedWorld();
bool isMainWorld() const { return m_worldId == mainWorldId; }
bool isIsolatedWorld() const { return isIsolatedWorldId(m_worldId); }
bool createdFromUnitializedWorld() const { return m_worldId < uninitializedWorldId; }
int worldId() const { return m_worldId; }
int extensionGroup() const { return m_extensionGroup; }
DOMDataStore* isolatedWorldDOMDataStore() const
{
ASSERT(isIsolatedWorld());
return m_domDataStore.get();
}
private:
static int isolatedWorldCount;
static PassRefPtr<DOMWrapperWorld> createMainWorld();
DOMWrapperWorld(int worldId, int extensionGroup);
const int m_worldId;
const int m_extensionGroup;
OwnPtr<DOMDataStore> m_domDataStore;
friend DOMWrapperWorld* mainThreadNormalWorld();
};
DOMWrapperWorld* mainThreadNormalWorld();
} // namespace WebCore
#endif // DOMWrapperWorld_h
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