1 /*
2 * Copyright (C) 2012 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 #include "config.h"
32
33
34 #include "core/inspector/InjectedScriptBase.h"
35
36 #include "bindings/v8/ScriptFunctionCall.h"
37 #include "bindings/v8/ScriptState.h"
38 #include "core/inspector/InspectorInstrumentation.h"
39 #include "platform/JSONValues.h"
40 #include "wtf/text/WTFString.h"
41
42 using WebCore::TypeBuilder::Runtime::RemoteObject;
43
44 namespace WebCore {
45
InjectedScriptBase(const String & name)46 InjectedScriptBase::InjectedScriptBase(const String& name)
47 : m_name(name)
48 , m_inspectedStateAccessCheck(0)
49 {
50 }
51
InjectedScriptBase(const String & name,ScriptObject injectedScriptObject,InspectedStateAccessCheck accessCheck)52 InjectedScriptBase::InjectedScriptBase(const String& name, ScriptObject injectedScriptObject, InspectedStateAccessCheck accessCheck)
53 : m_name(name)
54 , m_injectedScriptObject(injectedScriptObject)
55 , m_inspectedStateAccessCheck(accessCheck)
56 {
57 }
58
initialize(ScriptObject injectedScriptObject,InspectedStateAccessCheck accessCheck)59 void InjectedScriptBase::initialize(ScriptObject injectedScriptObject, InspectedStateAccessCheck accessCheck)
60 {
61 m_injectedScriptObject = injectedScriptObject;
62 m_inspectedStateAccessCheck = accessCheck;
63 }
64
canAccessInspectedWindow() const65 bool InjectedScriptBase::canAccessInspectedWindow() const
66 {
67 return m_inspectedStateAccessCheck(m_injectedScriptObject.scriptState());
68 }
69
injectedScriptObject() const70 const ScriptObject& InjectedScriptBase::injectedScriptObject() const
71 {
72 return m_injectedScriptObject;
73 }
74
callFunctionWithEvalEnabled(ScriptFunctionCall & function,bool & hadException) const75 ScriptValue InjectedScriptBase::callFunctionWithEvalEnabled(ScriptFunctionCall& function, bool& hadException) const
76 {
77 ExecutionContext* executionContext = m_injectedScriptObject.scriptState()->executionContext();
78 InspectorInstrumentationCookie cookie = InspectorInstrumentation::willCallFunction(executionContext, name(), 1);
79
80 ScriptState* scriptState = m_injectedScriptObject.scriptState();
81 bool evalIsDisabled = false;
82 if (scriptState) {
83 evalIsDisabled = !scriptState->evalEnabled();
84 // Temporarily enable allow evals for inspector.
85 if (evalIsDisabled)
86 scriptState->setEvalEnabled(true);
87 }
88
89 ScriptValue resultValue = function.call(hadException);
90
91 if (evalIsDisabled)
92 scriptState->setEvalEnabled(false);
93
94 InspectorInstrumentation::didCallFunction(cookie);
95 return resultValue;
96 }
97
makeCall(ScriptFunctionCall & function,RefPtr<JSONValue> * result)98 void InjectedScriptBase::makeCall(ScriptFunctionCall& function, RefPtr<JSONValue>* result)
99 {
100 if (hasNoValue() || !canAccessInspectedWindow()) {
101 *result = JSONValue::null();
102 return;
103 }
104
105 bool hadException = false;
106 ScriptValue resultValue = callFunctionWithEvalEnabled(function, hadException);
107
108 ASSERT(!hadException);
109 if (!hadException) {
110 *result = resultValue.toJSONValue(m_injectedScriptObject.scriptState());
111 if (!*result)
112 *result = JSONString::create(String::format("Object has too long reference chain(must not be longer than %d)", JSONValue::maxDepth));
113 } else {
114 *result = JSONString::create("Exception while making a call.");
115 }
116 }
117
makeEvalCall(ErrorString * errorString,ScriptFunctionCall & function,RefPtr<TypeBuilder::Runtime::RemoteObject> * objectResult,TypeBuilder::OptOutput<bool> * wasThrown)118 void InjectedScriptBase::makeEvalCall(ErrorString* errorString, ScriptFunctionCall& function, RefPtr<TypeBuilder::Runtime::RemoteObject>* objectResult, TypeBuilder::OptOutput<bool>* wasThrown)
119 {
120 RefPtr<JSONValue> result;
121 makeCall(function, &result);
122 if (!result) {
123 *errorString = "Internal error: result value is empty";
124 return;
125 }
126 if (result->type() == JSONValue::TypeString) {
127 result->asString(errorString);
128 ASSERT(errorString->length());
129 return;
130 }
131 RefPtr<JSONObject> resultPair = result->asObject();
132 if (!resultPair) {
133 *errorString = "Internal error: result is not an Object";
134 return;
135 }
136 RefPtr<JSONObject> resultObj = resultPair->getObject("result");
137 bool wasThrownVal = false;
138 if (!resultObj || !resultPair->getBoolean("wasThrown", &wasThrownVal)) {
139 *errorString = "Internal error: result is not a pair of value and wasThrown flag";
140 return;
141 }
142 *objectResult = TypeBuilder::Runtime::RemoteObject::runtimeCast(resultObj);
143 *wasThrown = wasThrownVal;
144 }
145
146 } // namespace WebCore
147
148