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1 /* | 1 /* |
2 * Copyright (C) 2009 Google Inc. All rights reserved. | 2 * Copyright (C) 2009 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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104 } | 104 } |
105 RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(toScriptWrappable(wrapper) == Scrip
tWrappable::fromNode(node)); | 105 RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(toScriptWrappable(wrapper) == Scrip
tWrappable::fromNode(node)); |
106 return wrapper; | 106 return wrapper; |
107 } | 107 } |
108 | 108 |
109 class V8WrapperInstantiationScope { | 109 class V8WrapperInstantiationScope { |
110 public: | 110 public: |
111 V8WrapperInstantiationScope(v8::Local<v8::Object> creationContext, v8::Isola
te* isolate, bool withSecurityCheck = true) | 111 V8WrapperInstantiationScope(v8::Local<v8::Object> creationContext, v8::Isola
te* isolate, bool withSecurityCheck = true) |
112 : m_didEnterContext(false) | 112 : m_didEnterContext(false) |
113 , m_context(isolate->GetCurrentContext()) | 113 , m_context(isolate->GetCurrentContext()) |
| 114 , m_tryCatch(isolate) |
| 115 , m_convertExceptions(false) |
114 { | 116 { |
115 // creationContext should not be empty. Because if we have an | 117 // creationContext should not be empty. Because if we have an |
116 // empty creationContext, we will end up creating | 118 // empty creationContext, we will end up creating |
117 // a new object in the context currently entered. This is wrong. | 119 // a new object in the context currently entered. This is wrong. |
118 RELEASE_ASSERT(!creationContext.IsEmpty()); | 120 RELEASE_ASSERT(!creationContext.IsEmpty()); |
119 v8::Local<v8::Context> contextForWrapper = creationContext->CreationCont
ext(); | 121 v8::Local<v8::Context> contextForWrapper = creationContext->CreationCont
ext(); |
| 122 |
120 // For performance, we enter the context only if the currently running c
ontext | 123 // For performance, we enter the context only if the currently running c
ontext |
121 // is different from the context that we are about to enter. | 124 // is different from the context that we are about to enter. |
122 if (contextForWrapper == m_context) | 125 if (contextForWrapper == m_context) |
123 return; | 126 return; |
124 if (withSecurityCheck) | 127 if (withSecurityCheck) { |
125 securityCheck(isolate, contextForWrapper); | 128 securityCheck(isolate, contextForWrapper); |
| 129 } else { |
| 130 m_convertExceptions = true; |
| 131 } |
126 m_context = v8::Local<v8::Context>::New(isolate, contextForWrapper); | 132 m_context = v8::Local<v8::Context>::New(isolate, contextForWrapper); |
127 m_didEnterContext = true; | 133 m_didEnterContext = true; |
128 m_context->Enter(); | 134 m_context->Enter(); |
129 } | 135 } |
130 | 136 |
131 ~V8WrapperInstantiationScope() | 137 ~V8WrapperInstantiationScope() |
132 { | 138 { |
133 if (!m_didEnterContext) | 139 if (!m_didEnterContext) { |
| 140 m_tryCatch.ReThrow(); |
134 return; | 141 return; |
| 142 } |
135 m_context->Exit(); | 143 m_context->Exit(); |
| 144 // Rethrow any cross-context exceptions as security error. |
| 145 if (m_tryCatch.HasCaught()) { |
| 146 if (m_convertExceptions) { |
| 147 m_tryCatch.Reset(); |
| 148 convertException(); |
| 149 } |
| 150 m_tryCatch.ReThrow(); |
| 151 } |
136 } | 152 } |
137 | 153 |
138 v8::Local<v8::Context> context() const { return m_context; } | 154 v8::Local<v8::Context> context() const { return m_context; } |
139 | 155 |
140 private: | 156 private: |
141 void securityCheck(v8::Isolate*, v8::Local<v8::Context> contextForWrapper); | 157 void securityCheck(v8::Isolate*, v8::Local<v8::Context> contextForWrapper); |
| 158 void convertException(); |
142 | 159 |
143 bool m_didEnterContext; | 160 bool m_didEnterContext; |
144 v8::Local<v8::Context> m_context; | 161 v8::Local<v8::Context> m_context; |
| 162 v8::TryCatch m_tryCatch; |
| 163 bool m_convertExceptions; |
145 }; | 164 }; |
146 | 165 |
147 } // namespace blink | 166 } // namespace blink |
148 | 167 |
149 #endif // V8DOMWrapper_h | 168 #endif // V8DOMWrapper_h |
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