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 "V8InjectedScriptHost.h"
35 #include "V8Window.h"
36 #include "bindings/v8/BindingSecurity.h"
37 #include "bindings/v8/ScopedPersistent.h"
38 #include "bindings/v8/ScriptDebugServer.h"
39 #include "bindings/v8/ScriptObject.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/DOMWindow.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
createInjectedScriptHostV8Wrapper(InjectedScriptHost * host,v8::Isolate * isolate)54 static v8::Local<v8::Object> createInjectedScriptHostV8Wrapper(InjectedScriptHost* host, v8::Isolate* isolate)
55 {
56 v8::Local<v8::Function> function = V8InjectedScriptHost::domTemplate(isolate, MainWorld)->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(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
createInjectedScript(const String & scriptSource,ScriptState * inspectedScriptState,int id)76 ScriptObject InjectedScriptManager::createInjectedScript(const String& scriptSource, ScriptState* inspectedScriptState, int id)
77 {
78 v8::Isolate* isolate = inspectedScriptState->isolate();
79 v8::HandleScope handleScope(isolate);
80
81 v8::Local<v8::Context> inspectedContext = inspectedScriptState->context();
82 v8::Context::Scope contextScope(inspectedContext);
83
84 // Call custom code to create InjectedScripHost wrapper specific for the context
85 // instead of calling toV8() that would create the
86 // wrapper in the current context.
87 // FIXME: make it possible to use generic bindings factory for InjectedScriptHost.
88 v8::Local<v8::Object> scriptHostWrapper = createInjectedScriptHostV8Wrapper(m_injectedScriptHost.get(), inspectedContext->GetIsolate());
89 if (scriptHostWrapper.IsEmpty())
90 return ScriptObject();
91
92 // Inject javascript into the context. The compiled script is supposed to evaluate into
93 // a single anonymous function(it's anonymous to avoid cluttering the global object with
94 // inspector's stuff) the function is called a few lines below with InjectedScriptHost wrapper,
95 // injected script id and explicit reference to the inspected global object. The function is expected
96 // to create and configure InjectedScript instance that is going to be used by the inspector.
97 v8::Local<v8::Value> value = V8ScriptRunner::compileAndRunInternalScript(v8String(isolate, scriptSource), isolate);
98 ASSERT(!value.IsEmpty());
99 ASSERT(value->IsFunction());
100
101 v8::Local<v8::Object> windowGlobal = inspectedContext->Global();
102 v8::Handle<v8::Value> info[] = { scriptHostWrapper, windowGlobal, v8::Number::New(inspectedContext->GetIsolate(), id) };
103 v8::Local<v8::Value> injectedScriptValue = V8ScriptRunner::callInternalFunction(v8::Local<v8::Function>::Cast(value), windowGlobal, WTF_ARRAY_LENGTH(info), info, inspectedContext->GetIsolate());
104 return ScriptObject(inspectedScriptState, v8::Handle<v8::Object>::Cast(injectedScriptValue));
105 }
106
canAccessInspectedWindow(ScriptState * scriptState)107 bool InjectedScriptManager::canAccessInspectedWindow(ScriptState* scriptState)
108 {
109 v8::HandleScope handleScope(scriptState->isolate());
110 v8::Local<v8::Context> context = scriptState->context();
111 v8::Local<v8::Object> global = context->Global();
112 if (global.IsEmpty())
113 return false;
114 v8::Handle<v8::Object> holder = global->FindInstanceInPrototypeChain(V8Window::domTemplate(context->GetIsolate(), MainWorld));
115 if (holder.IsEmpty())
116 holder = global->FindInstanceInPrototypeChain(V8Window::domTemplate(context->GetIsolate(), IsolatedWorld));
117 if (holder.IsEmpty())
118 return false;
119 Frame* frame = V8Window::toNative(holder)->frame();
120
121 v8::Context::Scope contextScope(context);
122 return BindingSecurity::shouldAllowAccessToFrame(frame, DoNotReportSecurityError);
123 }
124
setWeakCallback(const v8::WeakCallbackData<v8::Object,InjectedScriptManager::CallbackData> & data)125 void InjectedScriptManager::setWeakCallback(const v8::WeakCallbackData<v8::Object, InjectedScriptManager::CallbackData>& data)
126 {
127 data.GetParameter()->handle.clear();
128 data.GetParameter()->host.clear();
129 delete data.GetParameter();
130 }
131
132 } // namespace WebCore
133