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/*
* Copyright (C) 2012 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 "core/inspector/InjectedScriptManager.h"
#include "V8InjectedScriptHost.h"
#include "V8Window.h"
#include "bindings/v8/BindingSecurity.h"
#include "bindings/v8/ScopedPersistent.h"
#include "bindings/v8/ScriptDebugServer.h"
#include "bindings/v8/ScriptObject.h"
#include "bindings/v8/V8Binding.h"
#include "bindings/v8/V8ObjectConstructor.h"
#include "bindings/v8/V8ScriptRunner.h"
#include "core/inspector/InjectedScriptHost.h"
#include "core/frame/DOMWindow.h"
#include "wtf/RefPtr.h"
namespace WebCore {
struct InjectedScriptManager::CallbackData {
ScopedPersistent<v8::Object> handle;
RefPtr<InjectedScriptHost> host;
};
static v8::Local<v8::Object> createInjectedScriptHostV8Wrapper(InjectedScriptHost* host, v8::Isolate* isolate)
{
v8::Local<v8::Function> function = V8InjectedScriptHost::domTemplate(isolate, MainWorld)->GetFunction();
if (function.IsEmpty()) {
// Return if allocation failed.
return v8::Local<v8::Object>();
}
v8::Local<v8::Object> instanceTemplate = V8ObjectConstructor::newInstance(function);
if (instanceTemplate.IsEmpty()) {
// Avoid setting the wrapper if allocation failed.
return v8::Local<v8::Object>();
}
V8DOMWrapper::setNativeInfo(instanceTemplate, &V8InjectedScriptHost::wrapperTypeInfo, host);
// Create a weak reference to the v8 wrapper of InspectorBackend to deref
// InspectorBackend when the wrapper is garbage collected.
InjectedScriptManager::CallbackData* data = new InjectedScriptManager::CallbackData;
data->host = host;
data->handle.set(isolate, instanceTemplate);
data->handle.setWeak(data, &InjectedScriptManager::setWeakCallback);
return instanceTemplate;
}
ScriptObject InjectedScriptManager::createInjectedScript(const String& scriptSource, ScriptState* inspectedScriptState, int id)
{
v8::Isolate* isolate = inspectedScriptState->isolate();
v8::HandleScope handleScope(isolate);
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(), inspectedContext->GetIsolate());
if (scriptHostWrapper.IsEmpty())
return ScriptObject();
// 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::Value> value = V8ScriptRunner::compileAndRunInternalScript(v8String(isolate, scriptSource), isolate);
ASSERT(!value.IsEmpty());
ASSERT(value->IsFunction());
v8::Local<v8::Object> windowGlobal = inspectedContext->Global();
v8::Handle<v8::Value> info[] = { scriptHostWrapper, windowGlobal, v8::Number::New(inspectedContext->GetIsolate(), id) };
v8::Local<v8::Value> injectedScriptValue = V8ScriptRunner::callInternalFunction(v8::Local<v8::Function>::Cast(value), windowGlobal, WTF_ARRAY_LENGTH(info), info, inspectedContext->GetIsolate());
return ScriptObject(inspectedScriptState, v8::Handle<v8::Object>::Cast(injectedScriptValue));
}
bool InjectedScriptManager::canAccessInspectedWindow(ScriptState* scriptState)
{
v8::HandleScope handleScope(scriptState->isolate());
v8::Local<v8::Context> context = scriptState->context();
v8::Local<v8::Object> global = context->Global();
if (global.IsEmpty())
return false;
v8::Handle<v8::Object> holder = global->FindInstanceInPrototypeChain(V8Window::domTemplate(context->GetIsolate(), MainWorld));
if (holder.IsEmpty())
holder = global->FindInstanceInPrototypeChain(V8Window::domTemplate(context->GetIsolate(), IsolatedWorld));
if (holder.IsEmpty())
return false;
Frame* frame = V8Window::toNative(holder)->frame();
v8::Context::Scope contextScope(context);
return BindingSecurity::shouldAllowAccessToFrame(frame, DoNotReportSecurityError);
}
void InjectedScriptManager::setWeakCallback(const v8::WeakCallbackData<v8::Object, InjectedScriptManager::CallbackData>& data)
{
data.GetParameter()->handle.clear();
data.GetParameter()->host.clear();
delete data.GetParameter();
}
} // namespace WebCore
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