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      1 /*
      2  * Copyright (C) 2007 Apple Inc. All rights reserved.
      3  * Copyright (C) 2012 Google Inc. All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  *
      9  * 1.  Redistributions of source code must retain the above copyright
     10  *     notice, this list of conditions and the following disclaimer.
     11  * 2.  Redistributions in binary form must reproduce the above copyright
     12  *     notice, this list of conditions and the following disclaimer in the
     13  *     documentation and/or other materials provided with the distribution.
     14  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     15  *     its contributors may be used to endorse or promote products derived
     16  *     from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     19  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     21  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     22  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     25  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #ifndef InjectedScriptManager_h
     31 #define InjectedScriptManager_h
     32 
     33 #include "bindings/core/v8/ScriptState.h"
     34 #include "wtf/Forward.h"
     35 #include "wtf/HashMap.h"
     36 #include "wtf/text/WTFString.h"
     37 #include <v8.h>
     38 
     39 namespace blink {
     40 
     41 class LocalDOMWindow;
     42 class InjectedScript;
     43 class InjectedScriptHost;
     44 class ScriptValue;
     45 
     46 class InjectedScriptManager : public NoBaseWillBeGarbageCollectedFinalized<InjectedScriptManager> {
     47     WTF_MAKE_NONCOPYABLE(InjectedScriptManager);
     48     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
     49 public:
     50     struct CallbackData {
     51         ScopedPersistent<v8::Object> handle;
     52 #if ENABLE(OILPAN)
     53         WrapperPersistent<InjectedScriptHost>* hostPtr;
     54 #else
     55         RefPtr<InjectedScriptHost> host;
     56 #endif
     57         InjectedScriptManager* injectedScriptManager;
     58 
     59 #if ENABLE(OILPAN)
     60         CallbackData() : hostPtr(0) { }
     61         ~CallbackData();
     62 #endif
     63     };
     64 
     65     static PassOwnPtrWillBeRawPtr<InjectedScriptManager> createForPage();
     66     static PassOwnPtrWillBeRawPtr<InjectedScriptManager> createForWorker();
     67     ~InjectedScriptManager();
     68     void trace(Visitor*);
     69 
     70     void disconnect();
     71 
     72     InjectedScriptHost* injectedScriptHost();
     73 
     74     InjectedScript injectedScriptFor(ScriptState*);
     75     InjectedScript injectedScriptForId(int);
     76     int injectedScriptIdFor(ScriptState*);
     77     InjectedScript injectedScriptForObjectId(const String& objectId);
     78     void discardInjectedScripts();
     79     void discardInjectedScriptsFor(LocalDOMWindow*);
     80     void releaseObjectGroup(const String& objectGroup);
     81 
     82     typedef bool (*InspectedStateAccessCheck)(ScriptState*);
     83     InspectedStateAccessCheck inspectedStateAccessCheck() const { return m_inspectedStateAccessCheck; }
     84 
     85     static void setWeakCallback(const v8::WeakCallbackData<v8::Object, CallbackData>&);
     86     CallbackData* createCallbackData(InjectedScriptManager*);
     87     void removeCallbackData(CallbackData*);
     88 
     89 private:
     90     explicit InjectedScriptManager(InspectedStateAccessCheck);
     91 
     92     String injectedScriptSource();
     93     ScriptValue createInjectedScript(const String& source, ScriptState*, int id);
     94 
     95     static bool canAccessInspectedWindow(ScriptState*);
     96     static bool canAccessInspectedWorkerGlobalScope(ScriptState*);
     97 
     98     int m_nextInjectedScriptId;
     99     typedef HashMap<int, InjectedScript> IdToInjectedScriptMap;
    100     IdToInjectedScriptMap m_idToInjectedScript;
    101     RefPtrWillBeMember<InjectedScriptHost> m_injectedScriptHost;
    102     InspectedStateAccessCheck m_inspectedStateAccessCheck;
    103     typedef HashMap<RefPtr<ScriptState>, int> ScriptStateToId;
    104     ScriptStateToId m_scriptStateToId;
    105     HashSet<OwnPtr<CallbackData> > m_callbackDataSet;
    106 };
    107 
    108 } // namespace blink
    109 
    110 #endif // !defined(InjectedScriptManager_h)
    111