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1 /*
2  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
3  * Copyright (C) 2008 Matt Lilek <webkit@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 
createInjectedScript(const String & source,ScriptState * scriptState,long id)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 
discardInjectedScript(ScriptState * scriptState)76 void InjectedScriptManager::discardInjectedScript(ScriptState* scriptState)
77 {
78     JSDOMGlobalObject* globalObject = static_cast<JSDOMGlobalObject*>(scriptState->lexicalGlobalObject());
79     globalObject->setInjectedScript(0);
80 }
81 
injectedScriptFor(ScriptState * scriptState)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 
canAccessInspectedWindow(ScriptState * scriptState)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