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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) 2010-2011 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 are
      8  * met:
      9  *
     10  *     * Redistributions of source code must retain the above copyright
     11  * notice, this list of conditions and the following disclaimer.
     12  *     * Redistributions in binary form must reproduce the above
     13  * copyright notice, this list of conditions and the following disclaimer
     14  * in the documentation and/or other materials provided with the
     15  * distribution.
     16  *     * Neither the name of Google Inc. nor the names of its
     17  * contributors may be used to endorse or promote products derived from
     18  * this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     24  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     25  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     26  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #include "config.h"
     34 #include "InjectedScriptManager.h"
     35 
     36 #if ENABLE(INSPECTOR)
     37 
     38 #include "ExceptionCode.h"
     39 #include "InjectedScript.h"
     40 #include "JSDOMWindow.h"
     41 #include "JSDOMWindowCustom.h"
     42 #include "JSInjectedScriptHost.h"
     43 #include "JSMainThreadExecState.h"
     44 #include <parser/SourceCode.h>
     45 #include <runtime/JSLock.h>
     46 
     47 using namespace JSC;
     48 
     49 namespace WebCore {
     50 
     51 ScriptObject InjectedScriptManager::createInjectedScript(const String& source, ScriptState* scriptState, long id)
     52 {
     53     SourceCode sourceCode = makeSource(stringToUString(source));
     54     JSLock lock(SilenceAssertionsOnly);
     55     JSDOMGlobalObject* globalObject = static_cast<JSDOMGlobalObject*>(scriptState->lexicalGlobalObject());
     56     JSValue globalThisValue = scriptState->globalThisValue();
     57     Completion comp = JSMainThreadExecState::evaluate(scriptState, globalObject->globalScopeChain(), sourceCode, globalThisValue);
     58     if (comp.complType() != JSC::Normal && comp.complType() != JSC::ReturnValue)
     59         return ScriptObject();
     60     JSValue functionValue = comp.value();
     61     CallData callData;
     62     CallType callType = getCallData(functionValue, callData);
     63     if (callType == CallTypeNone)
     64         return ScriptObject();
     65 
     66     MarkedArgumentBuffer args;
     67     args.append(toJS(scriptState, globalObject, m_injectedScriptHost.get()));
     68     args.append(globalThisValue);
     69     args.append(jsNumber(id));
     70     JSValue result = JSC::call(scriptState, functionValue, callType, callData, globalThisValue, args);
     71     if (result.isObject())
     72         return ScriptObject(scriptState, result.getObject());
     73     return ScriptObject();
     74 }
     75 
     76 void InjectedScriptManager::discardInjectedScript(ScriptState* scriptState)
     77 {
     78     JSDOMGlobalObject* globalObject = static_cast<JSDOMGlobalObject*>(scriptState->lexicalGlobalObject());
     79     globalObject->setInjectedScript(0);
     80 }
     81 
     82 InjectedScript InjectedScriptManager::injectedScriptFor(ScriptState* scriptState)
     83 {
     84     JSLock lock(SilenceAssertionsOnly);
     85     JSDOMGlobalObject* globalObject = static_cast<JSDOMGlobalObject*>(scriptState->lexicalGlobalObject());
     86     JSObject* injectedScript = globalObject->injectedScript();
     87     if (injectedScript)
     88         return InjectedScript(ScriptObject(scriptState, injectedScript), m_inspectedStateAccessCheck);
     89 
     90     if (!m_inspectedStateAccessCheck(scriptState))
     91         return InjectedScript();
     92 
     93     pair<long, ScriptObject> injectedScriptObject = injectScript(injectedScriptSource(), scriptState);
     94     globalObject->setInjectedScript(injectedScriptObject.second.jsObject());
     95     InjectedScript result(injectedScriptObject.second, m_inspectedStateAccessCheck);
     96     m_idToInjectedScript.set(injectedScriptObject.first, result);
     97     return result;
     98 }
     99 
    100 bool InjectedScriptManager::canAccessInspectedWindow(ScriptState* scriptState)
    101 {
    102     JSLock lock(SilenceAssertionsOnly);
    103     JSDOMWindow* inspectedWindow = toJSDOMWindow(scriptState->lexicalGlobalObject());
    104     if (!inspectedWindow)
    105         return false;
    106     return inspectedWindow->allowsAccessFromNoErrorMessage(scriptState);
    107 }
    108 
    109 } // namespace WebCore
    110 
    111 #endif // ENABLE(INSPECTOR)
    112