| // 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 "chrome/browser/extensions/api/sockets_udp/udp_socket_event_dispatcher.h" |
| |
| #include "chrome/browser/browser_process.h" |
| #include "chrome/browser/extensions/api/socket/udp_socket.h" |
| #include "chrome/browser/extensions/event_router.h" |
| #include "chrome/browser/extensions/extension_system.h" |
| #include "chrome/browser/profiles/profile.h" |
| #include "chrome/browser/profiles/profile_manager.h" |
| #include "net/base/net_errors.h" |
| |
| namespace extensions { |
| namespace api { |
| |
| using content::BrowserThread; |
| |
| static base::LazyInstance<ProfileKeyedAPIFactory<UDPSocketEventDispatcher> > |
| g_factory = LAZY_INSTANCE_INITIALIZER; |
| |
| // static |
| ProfileKeyedAPIFactory<UDPSocketEventDispatcher>* |
| UDPSocketEventDispatcher::GetFactoryInstance() { |
| return &g_factory.Get(); |
| } |
| |
| // static |
| UDPSocketEventDispatcher* UDPSocketEventDispatcher::Get(Profile* profile) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
| |
| return ProfileKeyedAPIFactory<UDPSocketEventDispatcher>::GetForProfile( |
| profile); |
| } |
| |
| UDPSocketEventDispatcher::UDPSocketEventDispatcher(Profile* profile) |
| : thread_id_(Socket::kThreadId), |
| profile_(profile) { |
| ApiResourceManager<ResumableUDPSocket>* manager = |
| ApiResourceManager<ResumableUDPSocket>::Get(profile); |
| DCHECK(manager) << "There is no socket manager. " |
| "If this assertion is failing during a test, then it is likely that " |
| "TestExtensionSystem is failing to provide an instance of " |
| "ApiResourceManager<ResumableUDPSocket>."; |
| sockets_ = manager->data_; |
| } |
| |
| UDPSocketEventDispatcher::~UDPSocketEventDispatcher() {} |
| |
| UDPSocketEventDispatcher::ReceiveParams::ReceiveParams() {} |
| |
| UDPSocketEventDispatcher::ReceiveParams::~ReceiveParams() {} |
| |
| void UDPSocketEventDispatcher::OnSocketBind(const std::string& extension_id, |
| int socket_id) { |
| DCHECK(BrowserThread::CurrentlyOn(thread_id_)); |
| |
| ReceiveParams params; |
| params.thread_id = thread_id_; |
| params.profile_id = profile_; |
| params.extension_id = extension_id; |
| params.sockets = sockets_; |
| params.socket_id = socket_id; |
| |
| StartReceive(params); |
| } |
| |
| /* static */ |
| void UDPSocketEventDispatcher::StartReceive(const ReceiveParams& params) { |
| DCHECK(BrowserThread::CurrentlyOn(params.thread_id)); |
| |
| ResumableUDPSocket* socket = |
| params.sockets->Get(params.extension_id, params.socket_id); |
| if (socket == NULL) { |
| // This can happen if the socket is closed while our callback is active. |
| return; |
| } |
| DCHECK(params.extension_id == socket->owner_extension_id()) |
| << "Socket has wrong owner."; |
| |
| int buffer_size = (socket->buffer_size() <= 0 ? 4096 : socket->buffer_size()); |
| socket->RecvFrom(buffer_size, |
| base::Bind(&UDPSocketEventDispatcher::ReceiveCallback, |
| params)); |
| } |
| |
| /* static */ |
| void UDPSocketEventDispatcher::ReceiveCallback( |
| const ReceiveParams& params, |
| int bytes_read, |
| scoped_refptr<net::IOBuffer> io_buffer, |
| const std::string& address, |
| int port) { |
| DCHECK(BrowserThread::CurrentlyOn(params.thread_id)); |
| |
| // Note: if "bytes_read" < 0, there was a network error, and "bytes_read" is |
| // a value from "net::ERR_". |
| |
| if (bytes_read >= 0) { |
| // Dispatch "onReceive" event. |
| sockets_udp::ReceiveInfo receive_info; |
| receive_info.socket_id = params.socket_id; |
| receive_info.data = std::string(io_buffer->data(), bytes_read); |
| receive_info.remote_address = address; |
| receive_info.remote_port = port; |
| scoped_ptr<base::ListValue> args = |
| sockets_udp::OnReceive::Create(receive_info); |
| scoped_ptr<Event> event( |
| new Event(sockets_udp::OnReceive::kEventName, args.Pass())); |
| PostEvent(params, event.Pass()); |
| |
| // Post a task to delay the read until the socket is available, as |
| // calling StartReceive at this point would error with ERR_IO_PENDING. |
| BrowserThread::PostTask( |
| params.thread_id, FROM_HERE, |
| base::Bind(&UDPSocketEventDispatcher::StartReceive, params)); |
| } else { |
| // Dispatch "onReceiveError" event but don't start another read to avoid |
| // potential infinite reads if we have a persistent network error. |
| sockets_udp::ReceiveErrorInfo receive_error_info; |
| receive_error_info.socket_id = params.socket_id; |
| receive_error_info.result_code = bytes_read; |
| scoped_ptr<base::ListValue> args = |
| sockets_udp::OnReceiveError::Create(receive_error_info); |
| scoped_ptr<Event> event( |
| new Event(sockets_udp::OnReceiveError::kEventName, args.Pass())); |
| PostEvent(params, event.Pass()); |
| } |
| } |
| |
| /* static */ |
| void UDPSocketEventDispatcher::PostEvent(const ReceiveParams& params, |
| scoped_ptr<Event> event) { |
| DCHECK(BrowserThread::CurrentlyOn(params.thread_id)); |
| |
| BrowserThread::PostTask( |
| BrowserThread::UI, FROM_HERE, |
| base::Bind(&DispatchEvent, |
| params.profile_id, |
| params.extension_id, |
| base::Passed(event.Pass()))); |
| } |
| |
| /*static*/ |
| void UDPSocketEventDispatcher::DispatchEvent(void* profile_id, |
| const std::string& extension_id, |
| scoped_ptr<Event> event) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
| |
| Profile* profile = reinterpret_cast<Profile*>(profile_id); |
| if (!g_browser_process->profile_manager()->IsValidProfile(profile)) |
| return; |
| |
| EventRouter* router = ExtensionSystem::Get(profile)->event_router(); |
| if (router) |
| router->DispatchEventToExtension(extension_id, event.Pass()); |
| } |
| |
| } // namespace api |
| } // namespace extensions |