| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "chrome/renderer/extensions/chrome_v8_context.h" |
| |
| #include "base/logging.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/strings/string_split.h" |
| #include "base/values.h" |
| #include "chrome/common/extensions/extension_set.h" |
| #include "chrome/common/extensions/features/base_feature_provider.h" |
| #include "chrome/renderer/extensions/chrome_v8_extension.h" |
| #include "chrome/renderer/extensions/module_system.h" |
| #include "chrome/renderer/extensions/user_script_slave.h" |
| #include "content/public/renderer/render_view.h" |
| #include "content/public/renderer/v8_value_converter.h" |
| #include "extensions/common/extension.h" |
| #include "extensions/common/extension_api.h" |
| #include "third_party/WebKit/public/web/WebFrame.h" |
| #include "third_party/WebKit/public/web/WebScopedMicrotaskSuppression.h" |
| #include "third_party/WebKit/public/web/WebView.h" |
| #include "v8/include/v8.h" |
| |
| using content::V8ValueConverter; |
| |
| namespace extensions { |
| |
| ChromeV8Context::ChromeV8Context(v8::Handle<v8::Context> v8_context, |
| blink::WebFrame* web_frame, |
| const Extension* extension, |
| Feature::Context context_type) |
| : v8_context_(v8_context), |
| web_frame_(web_frame), |
| extension_(extension), |
| context_type_(context_type), |
| safe_builtins_(this), |
| pepper_request_proxy_(this), |
| isolate_(v8_context->GetIsolate()) { |
| VLOG(1) << "Created context:\n" |
| << " extension id: " << GetExtensionID() << "\n" |
| << " frame: " << web_frame_ << "\n" |
| << " context type: " << GetContextTypeDescription(); |
| } |
| |
| ChromeV8Context::~ChromeV8Context() { |
| VLOG(1) << "Destroyed context for extension\n" |
| << " extension id: " << GetExtensionID(); |
| Invalidate(); |
| } |
| |
| void ChromeV8Context::Invalidate() { |
| if (!is_valid()) |
| return; |
| if (module_system_) |
| module_system_->Invalidate(); |
| web_frame_ = NULL; |
| v8_context_.reset(); |
| } |
| |
| std::string ChromeV8Context::GetExtensionID() const { |
| return extension_.get() ? extension_->id() : std::string(); |
| } |
| |
| content::RenderView* ChromeV8Context::GetRenderView() const { |
| if (web_frame_ && web_frame_->view()) |
| return content::RenderView::FromWebView(web_frame_->view()); |
| else |
| return NULL; |
| } |
| |
| GURL ChromeV8Context::GetURL() const { |
| return web_frame_ ? |
| UserScriptSlave::GetDataSourceURLForFrame(web_frame_) : GURL(); |
| } |
| |
| v8::Local<v8::Value> ChromeV8Context::CallFunction( |
| v8::Handle<v8::Function> function, |
| int argc, |
| v8::Handle<v8::Value> argv[]) const { |
| v8::EscapableHandleScope handle_scope(isolate()); |
| v8::Context::Scope scope(v8_context()); |
| |
| blink::WebScopedMicrotaskSuppression suppression; |
| if (!is_valid()) { |
| return handle_scope.Escape( |
| v8::Local<v8::Primitive>(v8::Undefined(isolate()))); |
| } |
| |
| v8::Handle<v8::Object> global = v8_context()->Global(); |
| if (!web_frame_) |
| return handle_scope.Escape(function->Call(global, argc, argv)); |
| return handle_scope.Escape( |
| v8::Local<v8::Value>(web_frame_->callFunctionEvenIfScriptDisabled( |
| function, global, argc, argv))); |
| } |
| |
| bool ChromeV8Context::IsAnyFeatureAvailableToContext( |
| const std::string& api_name) { |
| return ExtensionAPI::GetSharedInstance()->IsAnyFeatureAvailableToContext( |
| api_name, |
| extension_.get(), |
| context_type_, |
| UserScriptSlave::GetDataSourceURLForFrame(web_frame_)); |
| } |
| |
| Feature::Availability ChromeV8Context::GetAvailability( |
| const std::string& api_name) { |
| return ExtensionAPI::GetSharedInstance()->IsAvailable(api_name, |
| extension_.get(), |
| context_type_, |
| GetURL()); |
| } |
| |
| void ChromeV8Context::DispatchOnUnloadEvent() { |
| module_system_->CallModuleMethod("unload_event", "dispatch"); |
| } |
| |
| std::string ChromeV8Context::GetContextTypeDescription() { |
| switch (context_type_) { |
| case Feature::UNSPECIFIED_CONTEXT: return "UNSPECIFIED"; |
| case Feature::BLESSED_EXTENSION_CONTEXT: return "BLESSED_EXTENSION"; |
| case Feature::UNBLESSED_EXTENSION_CONTEXT: return "UNBLESSED_EXTENSION"; |
| case Feature::CONTENT_SCRIPT_CONTEXT: return "CONTENT_SCRIPT"; |
| case Feature::WEB_PAGE_CONTEXT: return "WEB_PAGE"; |
| } |
| NOTREACHED(); |
| return std::string(); |
| } |
| |
| ChromeV8Context* ChromeV8Context::GetContext() { |
| return this; |
| } |
| |
| void ChromeV8Context::OnResponseReceived(const std::string& name, |
| int request_id, |
| bool success, |
| const base::ListValue& response, |
| const std::string& error) { |
| v8::HandleScope handle_scope(isolate()); |
| |
| scoped_ptr<V8ValueConverter> converter(V8ValueConverter::create()); |
| v8::Handle<v8::Value> argv[] = { |
| v8::Integer::New(request_id), |
| v8::String::NewFromUtf8(isolate(), name.c_str()), |
| v8::Boolean::New(isolate(), success), |
| converter->ToV8Value(&response, v8_context_.NewHandle(isolate())), |
| v8::String::NewFromUtf8(isolate(), error.c_str()) |
| }; |
| |
| v8::Handle<v8::Value> retval = module_system_->CallModuleMethod( |
| "sendRequest", "handleResponse", arraysize(argv), argv); |
| |
| // In debug, the js will validate the callback parameters and return a |
| // string if a validation error has occured. |
| if (DCHECK_IS_ON()) { |
| if (!retval.IsEmpty() && !retval->IsUndefined()) { |
| std::string error = *v8::String::Utf8Value(retval); |
| DCHECK(false) << error; |
| } |
| } |
| } |
| |
| } // namespace extensions |