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 #include "core/inspector/InjectedScriptManager.h" 33 34 #include "bindings/core/v8/V8InjectedScriptHost.h" 35 #include "bindings/core/v8/V8Window.h" 36 #include "bindings/v8/BindingSecurity.h" 37 #include "bindings/v8/ScopedPersistent.h" 38 #include "bindings/v8/ScriptDebugServer.h" 39 #include "bindings/v8/ScriptValue.h" 40 #include "bindings/v8/V8Binding.h" 41 #include "bindings/v8/V8ObjectConstructor.h" 42 #include "bindings/v8/V8ScriptRunner.h" 43 #include "core/inspector/InjectedScriptHost.h" 44 #include "core/frame/LocalDOMWindow.h" 45 #include "wtf/RefPtr.h" 46 47 namespace WebCore { 48 49 struct InjectedScriptManager::CallbackData { 50 ScopedPersistent<v8::Object> handle; 51 RefPtr<InjectedScriptHost> host; 52 }; 53 54 static v8::Local<v8::Object> createInjectedScriptHostV8Wrapper(InjectedScriptHost* host, v8::Isolate* isolate) 55 { 56 v8::Local<v8::Function> function = V8InjectedScriptHost::domTemplate(isolate)->GetFunction(); 57 if (function.IsEmpty()) { 58 // Return if allocation failed. 59 return v8::Local<v8::Object>(); 60 } 61 v8::Local<v8::Object> instanceTemplate = V8ObjectConstructor::newInstance(isolate, function); 62 if (instanceTemplate.IsEmpty()) { 63 // Avoid setting the wrapper if allocation failed. 64 return v8::Local<v8::Object>(); 65 } 66 V8DOMWrapper::setNativeInfo(instanceTemplate, &V8InjectedScriptHost::wrapperTypeInfo, host); 67 // Create a weak reference to the v8 wrapper of InspectorBackend to deref 68 // InspectorBackend when the wrapper is garbage collected. 69 InjectedScriptManager::CallbackData* data = new InjectedScriptManager::CallbackData; 70 data->host = host; 71 data->handle.set(isolate, instanceTemplate); 72 data->handle.setWeak(data, &InjectedScriptManager::setWeakCallback); 73 return instanceTemplate; 74 } 75 76 ScriptValue InjectedScriptManager::createInjectedScript(const String& scriptSource, ScriptState* inspectedScriptState, int id) 77 { 78 v8::Isolate* isolate = inspectedScriptState->isolate(); 79 ScriptState::Scope scope(inspectedScriptState); 80 81 // Call custom code to create InjectedScripHost wrapper specific for the context 82 // instead of calling toV8() that would create the 83 // wrapper in the current context. 84 // FIXME: make it possible to use generic bindings factory for InjectedScriptHost. 85 v8::Local<v8::Object> scriptHostWrapper = createInjectedScriptHostV8Wrapper(m_injectedScriptHost.get(), inspectedScriptState->isolate()); 86 if (scriptHostWrapper.IsEmpty()) 87 return ScriptValue(); 88 89 // Inject javascript into the context. The compiled script is supposed to evaluate into 90 // a single anonymous function(it's anonymous to avoid cluttering the global object with 91 // inspector's stuff) the function is called a few lines below with InjectedScriptHost wrapper, 92 // injected script id and explicit reference to the inspected global object. The function is expected 93 // to create and configure InjectedScript instance that is going to be used by the inspector. 94 v8::Local<v8::Value> value = V8ScriptRunner::compileAndRunInternalScript(v8String(isolate, scriptSource), isolate); 95 ASSERT(!value.IsEmpty()); 96 ASSERT(value->IsFunction()); 97 98 v8::Local<v8::Object> windowGlobal = inspectedScriptState->context()->Global(); 99 v8::Handle<v8::Value> info[] = { scriptHostWrapper, windowGlobal, v8::Number::New(inspectedScriptState->isolate(), id) }; 100 v8::Local<v8::Value> injectedScriptValue = V8ScriptRunner::callInternalFunction(v8::Local<v8::Function>::Cast(value), windowGlobal, WTF_ARRAY_LENGTH(info), info, inspectedScriptState->isolate()); 101 return ScriptValue(inspectedScriptState, injectedScriptValue); 102 } 103 104 bool InjectedScriptManager::canAccessInspectedWindow(ScriptState* scriptState) 105 { 106 ScriptState::Scope scope(scriptState); 107 v8::Local<v8::Object> global = scriptState->context()->Global(); 108 if (global.IsEmpty()) 109 return false; 110 v8::Handle<v8::Object> holder = V8Window::findInstanceInPrototypeChain(global, scriptState->isolate()); 111 if (holder.IsEmpty()) 112 return false; 113 LocalFrame* frame = V8Window::toNative(holder)->frame(); 114 115 return BindingSecurity::shouldAllowAccessToFrame(scriptState->isolate(), frame, DoNotReportSecurityError); 116 } 117 118 void InjectedScriptManager::setWeakCallback(const v8::WeakCallbackData<v8::Object, InjectedScriptManager::CallbackData>& data) 119 { 120 data.GetParameter()->handle.clear(); 121 data.GetParameter()->host.clear(); 122 delete data.GetParameter(); 123 } 124 125 } // namespace WebCore 126
