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      1 /*
      2  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
      3  * Copyright (C) 2008 Matt Lilek <webkit (at) mattlilek.com>
      4  * Copyright (C) 2012 Google Inc. All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  *
     10  * 1.  Redistributions of source code must retain the above copyright
     11  *     notice, this list of conditions and the following disclaimer.
     12  * 2.  Redistributions in binary form must reproduce the above copyright
     13  *     notice, this list of conditions and the following disclaimer in the
     14  *     documentation and/or other materials provided with the distribution.
     15  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     16  *     its contributors may be used to endorse or promote products derived
     17  *     from this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     20  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     21  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     22  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     23  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     26  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "core/inspector/InjectedScriptManager.h"
     33 
     34 #include "bindings/v8/ScriptValue.h"
     35 #include "core/InjectedScriptSource.h"
     36 #include "core/inspector/InjectedScript.h"
     37 #include "core/inspector/InjectedScriptHost.h"
     38 #include "core/inspector/JSONParser.h"
     39 #include "platform/JSONValues.h"
     40 #include "wtf/PassOwnPtr.h"
     41 
     42 namespace WebCore {
     43 
     44 PassOwnPtr<InjectedScriptManager> InjectedScriptManager::createForPage()
     45 {
     46     return adoptPtr(new InjectedScriptManager(&InjectedScriptManager::canAccessInspectedWindow));
     47 }
     48 
     49 PassOwnPtr<InjectedScriptManager> InjectedScriptManager::createForWorker()
     50 {
     51     return adoptPtr(new InjectedScriptManager(&InjectedScriptManager::canAccessInspectedWorkerGlobalScope));
     52 }
     53 
     54 InjectedScriptManager::InjectedScriptManager(InspectedStateAccessCheck accessCheck)
     55     : m_nextInjectedScriptId(1)
     56     , m_injectedScriptHost(InjectedScriptHost::create())
     57     , m_inspectedStateAccessCheck(accessCheck)
     58 {
     59 }
     60 
     61 InjectedScriptManager::~InjectedScriptManager()
     62 {
     63 }
     64 
     65 void InjectedScriptManager::disconnect()
     66 {
     67     m_injectedScriptHost->disconnect();
     68     m_injectedScriptHost.clear();
     69 }
     70 
     71 InjectedScriptHost* InjectedScriptManager::injectedScriptHost()
     72 {
     73     return m_injectedScriptHost.get();
     74 }
     75 
     76 InjectedScript InjectedScriptManager::injectedScriptForId(int id)
     77 {
     78     IdToInjectedScriptMap::iterator it = m_idToInjectedScript.find(id);
     79     if (it != m_idToInjectedScript.end())
     80         return it->value;
     81     for (ScriptStateToId::iterator it = m_scriptStateToId.begin(); it != m_scriptStateToId.end(); ++it) {
     82         if (it->value == id)
     83             return injectedScriptFor(it->key.get());
     84     }
     85     return InjectedScript();
     86 }
     87 
     88 int InjectedScriptManager::injectedScriptIdFor(ScriptState* scriptState)
     89 {
     90     ScriptStateToId::iterator it = m_scriptStateToId.find(scriptState);
     91     if (it != m_scriptStateToId.end())
     92         return it->value;
     93     int id = m_nextInjectedScriptId++;
     94     m_scriptStateToId.set(scriptState, id);
     95     return id;
     96 }
     97 
     98 InjectedScript InjectedScriptManager::injectedScriptForObjectId(const String& objectId)
     99 {
    100     RefPtr<JSONValue> parsedObjectId = parseJSON(objectId);
    101     if (parsedObjectId && parsedObjectId->type() == JSONValue::TypeObject) {
    102         long injectedScriptId = 0;
    103         bool success = parsedObjectId->asObject()->getNumber("injectedScriptId", &injectedScriptId);
    104         if (success)
    105             return m_idToInjectedScript.get(injectedScriptId);
    106     }
    107     return InjectedScript();
    108 }
    109 
    110 void InjectedScriptManager::discardInjectedScripts()
    111 {
    112     m_idToInjectedScript.clear();
    113     m_scriptStateToId.clear();
    114 }
    115 
    116 void InjectedScriptManager::discardInjectedScriptsFor(LocalDOMWindow* window)
    117 {
    118     if (m_scriptStateToId.isEmpty())
    119         return;
    120 
    121     Vector<long> idsToRemove;
    122     IdToInjectedScriptMap::iterator end = m_idToInjectedScript.end();
    123     for (IdToInjectedScriptMap::iterator it = m_idToInjectedScript.begin(); it != end; ++it) {
    124         ScriptState* scriptState = it->value.scriptState();
    125         if (window != scriptState->domWindow())
    126             continue;
    127         m_scriptStateToId.remove(scriptState);
    128         idsToRemove.append(it->key);
    129     }
    130     m_idToInjectedScript.removeAll(idsToRemove);
    131 
    132     // Now remove script states that have id but no injected script.
    133     Vector<ScriptState*> scriptStatesToRemove;
    134     for (ScriptStateToId::iterator it = m_scriptStateToId.begin(); it != m_scriptStateToId.end(); ++it) {
    135         ScriptState* scriptState = it->key.get();
    136         if (window == scriptState->domWindow())
    137             scriptStatesToRemove.append(scriptState);
    138     }
    139     m_scriptStateToId.removeAll(scriptStatesToRemove);
    140 }
    141 
    142 bool InjectedScriptManager::canAccessInspectedWorkerGlobalScope(ScriptState*)
    143 {
    144     return true;
    145 }
    146 
    147 void InjectedScriptManager::releaseObjectGroup(const String& objectGroup)
    148 {
    149     Vector<int> keys;
    150     keys.appendRange(m_idToInjectedScript.keys().begin(), m_idToInjectedScript.keys().end());
    151     for (Vector<int>::iterator k = keys.begin(); k != keys.end(); ++k) {
    152         IdToInjectedScriptMap::iterator s = m_idToInjectedScript.find(*k);
    153         if (s != m_idToInjectedScript.end())
    154             s->value.releaseObjectGroup(objectGroup); // m_idToInjectedScript may change here.
    155     }
    156 }
    157 
    158 String InjectedScriptManager::injectedScriptSource()
    159 {
    160     return String(reinterpret_cast<const char*>(InjectedScriptSource_js), sizeof(InjectedScriptSource_js));
    161 }
    162 
    163 InjectedScript InjectedScriptManager::injectedScriptFor(ScriptState* inspectedScriptState)
    164 {
    165     ScriptStateToId::iterator it = m_scriptStateToId.find(inspectedScriptState);
    166     if (it != m_scriptStateToId.end()) {
    167         IdToInjectedScriptMap::iterator it1 = m_idToInjectedScript.find(it->value);
    168         if (it1 != m_idToInjectedScript.end())
    169             return it1->value;
    170     }
    171 
    172     if (!m_inspectedStateAccessCheck(inspectedScriptState))
    173         return InjectedScript();
    174 
    175     int id = injectedScriptIdFor(inspectedScriptState);
    176     ScriptValue injectedScriptValue = createInjectedScript(injectedScriptSource(), inspectedScriptState, id);
    177     InjectedScript result(injectedScriptValue, m_inspectedStateAccessCheck);
    178     m_idToInjectedScript.set(id, result);
    179     return result;
    180 }
    181 
    182 } // namespace WebCore
    183 
    184