| // Copyright 2013 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 "extensions/browser/extension_function.h" |
| |
| #include "base/logging.h" |
| #include "base/metrics/sparse_histogram.h" |
| #include "chrome/browser/extensions/extension_function_dispatcher.h" |
| #include "chrome/browser/extensions/extension_service.h" |
| #include "chrome/browser/renderer_host/chrome_render_message_filter.h" |
| #include "chrome/common/extensions/extension_messages.h" |
| #include "content/public/browser/notification_source.h" |
| #include "content/public/browser/notification_types.h" |
| #include "content/public/browser/render_view_host.h" |
| #include "content/public/browser/web_contents.h" |
| #include "content/public/browser/web_contents_observer.h" |
| #include "extensions/common/extension_api.h" |
| |
| using content::BrowserThread; |
| using content::RenderViewHost; |
| using content::WebContents; |
| using extensions::ExtensionAPI; |
| using extensions::Feature; |
| |
| // static |
| void ExtensionFunctionDeleteTraits::Destruct(const ExtensionFunction* x) { |
| x->Destruct(); |
| } |
| |
| // Helper class to track the lifetime of ExtensionFunction's RenderViewHost |
| // pointer and NULL it out when it dies. It also allows us to filter IPC |
| // messages coming from the RenderViewHost. |
| class UIThreadExtensionFunction::RenderViewHostTracker |
| : public content::WebContentsObserver { |
| public: |
| explicit RenderViewHostTracker(UIThreadExtensionFunction* function) |
| : content::WebContentsObserver( |
| WebContents::FromRenderViewHost(function->render_view_host())), |
| function_(function) { |
| } |
| |
| private: |
| // content::WebContentsObserver: |
| virtual void RenderViewDeleted( |
| content::RenderViewHost* render_view_host) OVERRIDE { |
| if (render_view_host != function_->render_view_host()) |
| return; |
| |
| function_->SetRenderViewHost(NULL); |
| } |
| |
| virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE { |
| return function_->OnMessageReceivedFromRenderView(message); |
| } |
| |
| UIThreadExtensionFunction* function_; |
| |
| DISALLOW_COPY_AND_ASSIGN(RenderViewHostTracker); |
| }; |
| |
| ExtensionFunction::ExtensionFunction() |
| : request_id_(-1), |
| profile_id_(NULL), |
| has_callback_(false), |
| include_incognito_(false), |
| user_gesture_(false), |
| bad_message_(false), |
| histogram_value_(extensions::functions::UNKNOWN) {} |
| |
| ExtensionFunction::~ExtensionFunction() { |
| } |
| |
| UIThreadExtensionFunction* ExtensionFunction::AsUIThreadExtensionFunction() { |
| return NULL; |
| } |
| |
| IOThreadExtensionFunction* ExtensionFunction::AsIOThreadExtensionFunction() { |
| return NULL; |
| } |
| |
| bool ExtensionFunction::HasPermission() { |
| Feature::Availability availability = |
| ExtensionAPI::GetSharedInstance()->IsAvailable( |
| name_, extension_, Feature::BLESSED_EXTENSION_CONTEXT, source_url()); |
| return availability.is_available(); |
| } |
| |
| void ExtensionFunction::OnQuotaExceeded(const std::string& violation_error) { |
| error_ = violation_error; |
| SendResponse(false); |
| } |
| |
| void ExtensionFunction::SetArgs(const base::ListValue* args) { |
| DCHECK(!args_.get()); // Should only be called once. |
| args_.reset(args->DeepCopy()); |
| } |
| |
| void ExtensionFunction::SetResult(base::Value* result) { |
| results_.reset(new base::ListValue()); |
| results_->Append(result); |
| } |
| |
| const base::ListValue* ExtensionFunction::GetResultList() { |
| return results_.get(); |
| } |
| |
| const std::string ExtensionFunction::GetError() { |
| return error_; |
| } |
| |
| void ExtensionFunction::SetError(const std::string& error) { |
| error_ = error; |
| } |
| |
| void ExtensionFunction::Run() { |
| UMA_HISTOGRAM_SPARSE_SLOWLY("Extensions.FunctionCalls", histogram_value()); |
| |
| if (!RunImpl()) |
| SendResponse(false); |
| } |
| |
| bool ExtensionFunction::ShouldSkipQuotaLimiting() const { |
| return false; |
| } |
| |
| bool ExtensionFunction::HasOptionalArgument(size_t index) { |
| Value* value; |
| return args_->Get(index, &value) && !value->IsType(Value::TYPE_NULL); |
| } |
| |
| void ExtensionFunction::SendResponseImpl(bool success) { |
| DCHECK(!response_callback_.is_null()); |
| |
| ResponseType type = success ? SUCCEEDED : FAILED; |
| if (bad_message_) { |
| type = BAD_MESSAGE; |
| LOG(ERROR) << "Bad extension message " << name_; |
| } |
| |
| // If results were never set, we send an empty argument list. |
| if (!results_) |
| results_.reset(new base::ListValue()); |
| |
| response_callback_.Run(type, *results_, GetError()); |
| } |
| |
| UIThreadExtensionFunction::UIThreadExtensionFunction() |
| : render_view_host_(NULL), context_(NULL), delegate_(NULL) {} |
| |
| UIThreadExtensionFunction::~UIThreadExtensionFunction() { |
| if (dispatcher() && render_view_host()) |
| dispatcher()->OnExtensionFunctionCompleted(GetExtension()); |
| } |
| |
| UIThreadExtensionFunction* |
| UIThreadExtensionFunction::AsUIThreadExtensionFunction() { |
| return this; |
| } |
| |
| bool UIThreadExtensionFunction::OnMessageReceivedFromRenderView( |
| const IPC::Message& message) { |
| return false; |
| } |
| |
| void UIThreadExtensionFunction::Destruct() const { |
| BrowserThread::DeleteOnUIThread::Destruct(this); |
| } |
| |
| void UIThreadExtensionFunction::SetRenderViewHost( |
| RenderViewHost* render_view_host) { |
| render_view_host_ = render_view_host; |
| tracker_.reset(render_view_host ? new RenderViewHostTracker(this) : NULL); |
| } |
| |
| content::WebContents* UIThreadExtensionFunction::GetAssociatedWebContents() { |
| content::WebContents* web_contents = NULL; |
| if (dispatcher()) |
| web_contents = dispatcher()->delegate()->GetAssociatedWebContents(); |
| |
| return web_contents; |
| } |
| |
| void UIThreadExtensionFunction::SendResponse(bool success) { |
| if (delegate_) |
| delegate_->OnSendResponse(this, success, bad_message_); |
| else |
| SendResponseImpl(success); |
| } |
| |
| void UIThreadExtensionFunction::WriteToConsole( |
| content::ConsoleMessageLevel level, |
| const std::string& message) { |
| render_view_host_->Send(new ExtensionMsg_AddMessageToConsole( |
| render_view_host_->GetRoutingID(), level, message)); |
| } |
| |
| IOThreadExtensionFunction::IOThreadExtensionFunction() |
| : routing_id_(MSG_ROUTING_NONE) { |
| } |
| |
| IOThreadExtensionFunction::~IOThreadExtensionFunction() { |
| } |
| |
| IOThreadExtensionFunction* |
| IOThreadExtensionFunction::AsIOThreadExtensionFunction() { |
| return this; |
| } |
| |
| void IOThreadExtensionFunction::Destruct() const { |
| BrowserThread::DeleteOnIOThread::Destruct(this); |
| } |
| |
| void IOThreadExtensionFunction::SendResponse(bool success) { |
| SendResponseImpl(success); |
| } |
| |
| AsyncExtensionFunction::AsyncExtensionFunction() { |
| } |
| |
| AsyncExtensionFunction::~AsyncExtensionFunction() { |
| } |
| |
| SyncExtensionFunction::SyncExtensionFunction() { |
| } |
| |
| SyncExtensionFunction::~SyncExtensionFunction() { |
| } |
| |
| void SyncExtensionFunction::Run() { |
| SendResponse(RunImpl()); |
| } |
| |
| SyncIOThreadExtensionFunction::SyncIOThreadExtensionFunction() { |
| } |
| |
| SyncIOThreadExtensionFunction::~SyncIOThreadExtensionFunction() { |
| } |
| |
| void SyncIOThreadExtensionFunction::Run() { |
| SendResponse(RunImpl()); |
| } |