extensions/browser/api/sockets_tcp_server/tcp_server_socket_event_dispatcher.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef EXTENSIONS_BROWSER_API_SOCKETS_TCP_SERVER_TCP_SERVER_SOCKET_EVENT_DISPATCHER_H_
   6 #define EXTENSIONS_BROWSER_API_SOCKETS_TCP_SERVER_TCP_SERVER_SOCKET_EVENT_DISPATCHER_H_
   7
   8 #include "extensions/browser/api/api_resource_manager.h"
   9 #include "extensions/browser/api/sockets_tcp/sockets_tcp_api.h"
  10 #include "extensions/browser/api/sockets_tcp_server/sockets_tcp_server_api.h"
  11
  12 namespace content {
  13 class BrowserContext;
  14 }
  15
  16 namespace extensions {
  17 struct Event;
  18 class ResumableTCPSocket;
  19 }
  20
  21 namespace extensions {
  22 namespace core_api {
  23
  24 // Dispatch events related to "sockets.tcp" sockets from callback on native
  25 // socket instances. There is one instance per profile.
  26 class TCPServerSocketEventDispatcher
  27     : public BrowserContextKeyedAPI,
  28       public base::SupportsWeakPtr<TCPServerSocketEventDispatcher> {
  29  public:
  30   explicit TCPServerSocketEventDispatcher(content::BrowserContext* context);
  31   ~TCPServerSocketEventDispatcher() override;
  32
  33   // Server socket is active, start accepting connections from it.
  34   void OnServerSocketListen(const std::string& extension_id, int socket_id);
  35
  36   // Server socket is active again, start accepting connections from it.
  37   void OnServerSocketResume(const std::string& extension_id, int socket_id);
  38
  39   // BrowserContextKeyedAPI implementation.
  40   static BrowserContextKeyedAPIFactory<TCPServerSocketEventDispatcher>*
  41       GetFactoryInstance();
  42
  43   // Convenience method to get the SocketEventDispatcher for a profile.
  44   static TCPServerSocketEventDispatcher* Get(content::BrowserContext* context);
  45
  46  private:
  47   typedef ApiResourceManager<ResumableTCPServerSocket>::ApiResourceData
  48       ServerSocketData;
  49   typedef ApiResourceManager<ResumableTCPSocket>::ApiResourceData
  50       ClientSocketData;
  51   friend class BrowserContextKeyedAPIFactory<TCPServerSocketEventDispatcher>;
  52   // BrowserContextKeyedAPI implementation.
  53   static const char* service_name() { return "TCPServerSocketEventDispatcher"; }
  54   static const bool kServiceHasOwnInstanceInIncognito = true;
  55   static const bool kServiceIsNULLWhileTesting = true;
  56
  57   // base::Bind supports methods with up to 6 parameters. AcceptParams is used
  58   // as a workaround that limitation for invoking StartAccept.
  59   struct AcceptParams {
  60     AcceptParams();
  61     ~AcceptParams();
  62
  63     content::BrowserThread::ID thread_id;
  64     void* browser_context_id;
  65     std::string extension_id;
  66     scoped_refptr<ServerSocketData> server_sockets;
  67     scoped_refptr<ClientSocketData> client_sockets;
  68     int socket_id;
  69   };
  70
  71   // Start an accept and register a callback.
  72   void StartSocketAccept(const std::string& extension_id, int socket_id);
  73
  74   // Start an accept and register a callback.
  75   static void StartAccept(const AcceptParams& params);
  76
  77   // Called when socket accepts a new connection.
  78   static void AcceptCallback(const AcceptParams& params,
  79                              int result_code,
  80                              net::TCPClientSocket* socket);
  81
  82   // Post an extension event from |thread_id| to UI thread
  83   static void PostEvent(const AcceptParams& params, scoped_ptr<Event> event);
  84
  85   // Dispatch an extension event on to EventRouter instance on UI thread.
  86   static void DispatchEvent(void* browser_context_id,
  87                             const std::string& extension_id,
  88                             scoped_ptr<Event> event);
  89
  90   // Usually IO thread (except for unit testing).
  91   content::BrowserThread::ID thread_id_;
  92   content::BrowserContext* const browser_context_;
  93   scoped_refptr<ServerSocketData> server_sockets_;
  94   scoped_refptr<ClientSocketData> client_sockets_;
  95 };
  96
  97 }  // namespace core_api
  98 }  // namespace extensions
  99
 100 #endif  // EXTENSIONS_BROWSER_API_SOCKETS_TCP_SERVER_TCP_SERVER_SOCKET_EVENT_DISPATCHER_H_