diff options
Diffstat (limited to 'Source/WebCore/bindings/v8/custom/V8InjectedScriptManager.cpp')
-rw-r--r-- | Source/WebCore/bindings/v8/custom/V8InjectedScriptManager.cpp | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/Source/WebCore/bindings/v8/custom/V8InjectedScriptManager.cpp b/Source/WebCore/bindings/v8/custom/V8InjectedScriptManager.cpp new file mode 100644 index 0000000..f4006b8 --- /dev/null +++ b/Source/WebCore/bindings/v8/custom/V8InjectedScriptManager.cpp @@ -0,0 +1,170 @@ +/* + * 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))); + + if (!canAccessInspectedWindow(inspectedScriptState)) + return InjectedScript(); + + pair<long, ScriptObject> injectedScript = injectScript(injectedScriptSource(), inspectedScriptState); + InjectedScript result(injectedScript.second); + 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 |