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      1 /*
      2  * Copyright (C) 2009 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef DOMWrapperWorld_h
     32 #define DOMWrapperWorld_h
     33 
     34 #include "bindings/v8/V8DOMActivityLogger.h"
     35 #include "bindings/v8/V8PerContextData.h"
     36 #include "weborigin/SecurityOrigin.h"
     37 #include <v8.h>
     38 #include "wtf/PassRefPtr.h"
     39 #include "wtf/RefCounted.h"
     40 #include "wtf/RefPtr.h"
     41 #include "wtf/text/WTFString.h"
     42 
     43 namespace WebCore {
     44 
     45 class DOMDataStore;
     46 class ScriptExecutionContext;
     47 
     48 // This class represent a collection of DOM wrappers for a specific world.
     49 class DOMWrapperWorld : public RefCounted<DOMWrapperWorld> {
     50 public:
     51     static const int mainWorldId = 0;
     52     static const int mainWorldExtensionGroup = 0;
     53     static PassRefPtr<DOMWrapperWorld> ensureIsolatedWorld(int worldId, int extensionGroup);
     54     ~DOMWrapperWorld();
     55 
     56     static bool isolatedWorldsExist() { return isolatedWorldCount; }
     57     static bool isIsolatedWorldId(int worldId) { return worldId > mainWorldId; }
     58     static void getAllWorlds(Vector<RefPtr<DOMWrapperWorld> >& worlds);
     59 
     60     void setIsolatedWorldField(v8::Handle<v8::Context>);
     61 
     62     static DOMWrapperWorld* isolatedWorld(v8::Handle<v8::Context> context)
     63     {
     64         ASSERT(contextHasCorrectPrototype(context));
     65         return static_cast<DOMWrapperWorld*>(context->GetAlignedPointerFromEmbedderData(v8ContextIsolatedWorld));
     66     }
     67 
     68     // Will return null if there is no DOMWrapperWorld for the current v8::Context
     69     static DOMWrapperWorld* current();
     70 
     71     // Associates an isolated world (see above for description) with a security
     72     // origin. XMLHttpRequest instances used in that world will be considered
     73     // to come from that origin, not the frame's.
     74     static void setIsolatedWorldSecurityOrigin(int worldID, PassRefPtr<SecurityOrigin>);
     75     static void clearIsolatedWorldSecurityOrigin(int worldID);
     76     SecurityOrigin* isolatedWorldSecurityOrigin();
     77 
     78     // Associated an isolated world with a Content Security Policy. Resources
     79     // embedded into the main world's DOM from script executed in an isolated
     80     // world should be restricted based on the isolated world's DOM, not the
     81     // main world's.
     82     //
     83     // FIXME: Right now, resource injection simply bypasses the main world's
     84     // DOM. More work is necessary to allow the isolated world's policy to be
     85     // applied correctly.
     86     static void setIsolatedWorldContentSecurityPolicy(int worldID, const String& policy);
     87     static void clearIsolatedWorldContentSecurityPolicy(int worldID);
     88     bool isolatedWorldHasContentSecurityPolicy();
     89 
     90     // Associate a logger with the world identified by worldId (worlId may be 0
     91     // identifying the main world).
     92     static void setActivityLogger(int worldId, PassOwnPtr<V8DOMActivityLogger>);
     93     static V8DOMActivityLogger* activityLogger(int worldId);
     94 
     95     bool isMainWorld() const { return m_worldId == mainWorldId; }
     96     bool isIsolatedWorld() const { return isIsolatedWorldId(m_worldId); }
     97 
     98     int worldId() const { return m_worldId; }
     99     int extensionGroup() const { return m_extensionGroup; }
    100     DOMDataStore* isolatedWorldDOMDataStore() const
    101     {
    102         ASSERT(isIsolatedWorld());
    103         return m_domDataStore.get();
    104     }
    105 
    106     static void setInitializingWindow(bool);
    107 
    108 private:
    109     static int isolatedWorldCount;
    110     static PassRefPtr<DOMWrapperWorld> createMainWorld();
    111     static bool contextHasCorrectPrototype(v8::Handle<v8::Context>);
    112 
    113     DOMWrapperWorld(int worldId, int extensionGroup);
    114 
    115     const int m_worldId;
    116     const int m_extensionGroup;
    117     OwnPtr<DOMDataStore> m_domDataStore;
    118 
    119     friend DOMWrapperWorld* mainThreadNormalWorld();
    120     friend DOMWrapperWorld* existingWindowShellWorkaroundWorld();
    121 };
    122 
    123 DOMWrapperWorld* mainThreadNormalWorld();
    124 
    125 // FIXME: this is a workaround for a problem in ScriptController
    126 // Do not use this anywhere else!!
    127 DOMWrapperWorld* existingWindowShellWorkaroundWorld();
    128 
    129 } // namespace WebCore
    130 
    131 #endif // DOMWrapperWorld_h
    132