1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/*
* Copyright (C) 2007-2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "InjectedScriptManager.h"
#include "DOMWindow.h"
#include "InjectedScript.h"
#include "InjectedScriptHost.h"
#include "ScriptValue.h"
#include "V8Binding.h"
#include "V8BindingState.h"
#include "V8DOMWindow.h"
#include "V8HiddenPropertyName.h"
#include "V8InjectedScriptHost.h"
#include "V8Proxy.h"
#include <wtf/RefPtr.h>
namespace WebCore {
static void WeakReferenceCallback(v8::Persistent<v8::Value> object, void* parameter)
{
InjectedScriptHost* nativeObject = static_cast<InjectedScriptHost*>(parameter);
nativeObject->deref();
object.Dispose();
}
static v8::Local<v8::Object> createInjectedScriptHostV8Wrapper(InjectedScriptHost* host)
{
v8::Local<v8::Function> function = V8InjectedScriptHost::GetTemplate()->GetFunction();
if (function.IsEmpty()) {
// Return if allocation failed.
return v8::Local<v8::Object>();
}
v8::Local<v8::Object> instance = SafeAllocation::newInstance(function);
if (instance.IsEmpty()) {
// Avoid setting the wrapper if allocation failed.
return v8::Local<v8::Object>();
}
V8DOMWrapper::setDOMWrapper(instance, &V8InjectedScriptHost::info, host);
// Create a weak reference to the v8 wrapper of InspectorBackend to deref
// InspectorBackend when the wrapper is garbage collected.
host->ref();
v8::Persistent<v8::Object> weakHandle = v8::Persistent<v8::Object>::New(instance);
weakHandle.MakeWeak(host, &WeakReferenceCallback);
return instance;
}
ScriptObject InjectedScriptManager::createInjectedScript(const String& scriptSource, ScriptState* inspectedScriptState, long id)
{
v8::HandleScope scope;
v8::Local<v8::Context> inspectedContext = inspectedScriptState->context();
v8::Context::Scope contextScope(inspectedContext);
// Call custom code to create InjectedScripHost wrapper specific for the context
// instead of calling toV8() that would create the
// wrapper in the current context.
// FIXME: make it possible to use generic bindings factory for InjectedScriptHost.
v8::Local<v8::Object> scriptHostWrapper = createInjectedScriptHostV8Wrapper(m_injectedScriptHost.get());
if (scriptHostWrapper.IsEmpty())
return ScriptObject();
v8::Local<v8::Object> windowGlobal = inspectedContext->Global();
// Inject javascript into the context. The compiled script is supposed to evaluate into
// a single anonymous function(it's anonymous to avoid cluttering the global object with
// inspector's stuff) the function is called a few lines below with InjectedScriptHost wrapper,
// injected script id and explicit reference to the inspected global object. The function is expected
// to create and configure InjectedScript instance that is going to be used by the inspector.
v8::Local<v8::Script> script = v8::Script::Compile(v8String(scriptSource));
v8::Local<v8::Value> v = script->Run();
ASSERT(!v.IsEmpty());
ASSERT(v->IsFunction());
v8::Handle<v8::Value> args[] = {
scriptHostWrapper,
windowGlobal,
v8::Number::New(id),
};
v8::Local<v8::Value> injectedScriptValue = v8::Function::Cast(*v)->Call(windowGlobal, 3, args);
v8::Local<v8::Object> injectedScript(v8::Object::Cast(*injectedScriptValue));
return ScriptObject(inspectedScriptState, injectedScript);
}
void InjectedScriptManager::discardInjectedScript(ScriptState* inspectedScriptState)
{
v8::HandleScope handleScope;
v8::Local<v8::Context> context = inspectedScriptState->context();
v8::Context::Scope contextScope(context);
v8::Local<v8::Object> global = context->Global();
// Skip proxy object. The proxy object will survive page navigation while we need
// an object whose lifetime consides with that of the inspected context.
global = v8::Local<v8::Object>::Cast(global->GetPrototype());
v8::Handle<v8::String> key = V8HiddenPropertyName::devtoolsInjectedScript();
global->DeleteHiddenValue(key);
}
InjectedScript InjectedScriptManager::injectedScriptFor(ScriptState* inspectedScriptState)
{
v8::HandleScope handleScope;
v8::Local<v8::Context> context = inspectedScriptState->context();
v8::Context::Scope contextScope(context);
v8::Local<v8::Object> global = context->Global();
// Skip proxy object. The proxy object will survive page navigation while we need
// an object whose lifetime consides with that of the inspected context.
global = v8::Local<v8::Object>::Cast(global->GetPrototype());
v8::Handle<v8::String> key = V8HiddenPropertyName::devtoolsInjectedScript();
v8::Local<v8::Value> val = global->GetHiddenValue(key);
if (!val.IsEmpty() && val->IsObject())
return InjectedScript(ScriptObject(inspectedScriptState, v8::Local<v8::Object>::Cast(val)), m_inspectedStateAccessCheck);
if (!m_inspectedStateAccessCheck(inspectedScriptState))
return InjectedScript();
pair<long, ScriptObject> injectedScript = injectScript(injectedScriptSource(), inspectedScriptState);
InjectedScript result(injectedScript.second, m_inspectedStateAccessCheck);
m_idToInjectedScript.set(injectedScript.first, result);
global->SetHiddenValue(key, injectedScript.second.v8Object());
return result;
}
bool InjectedScriptManager::canAccessInspectedWindow(ScriptState* scriptState)
{
v8::HandleScope handleScope;
v8::Local<v8::Context> context = scriptState->context();
v8::Local<v8::Object> global = context->Global();
if (global.IsEmpty())
return false;
v8::Handle<v8::Object> holder = V8DOMWrapper::lookupDOMWrapper(V8DOMWindow::GetTemplate(), global);
if (holder.IsEmpty())
return false;
Frame* frame = V8DOMWindow::toNative(holder)->frame();
v8::Context::Scope contextScope(context);
return V8BindingSecurity::canAccessFrame(V8BindingState::Only(), frame, false);
}
} // namespace WebCore
|
