PPB_TCPSocket: add support for TCP server socket operations.

ppapi/proxy/tcp_socket_resource_base.h

 // 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.
 
 #ifndef PPAPI_PROXY_TCP_SOCKET_RESOURCE_BASE_H_
 #define PPAPI_PROXY_TCP_SOCKET_RESOURCE_BASE_H_
 
 #include <queue>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "ppapi/c/ppb_tcp_socket.h"
 #include "ppapi/c/private/ppb_net_address_private.h"
 #include "ppapi/proxy/plugin_resource.h"
 #include "ppapi/proxy/ppapi_proxy_export.h"
+#include "ppapi/shared_impl/ppb_tcp_socket_shared.h"
 #include "ppapi/shared_impl/tracked_callback.h"
 
 namespace ppapi {
 
 class PPB_X509Certificate_Fields;
 class PPB_X509Certificate_Private_Shared;
 class SocketOptionData;
 
 namespace proxy {
 
 class PPAPI_PROXY_EXPORT TCPSocketResourceBase : public PluginResource {
  public:
+  // TODO(yzshen): Move these constants to ppb_tcp_socket_shared.
   // The maximum number of bytes that each PpapiHostMsg_PPBTCPSocket_Read
   // message is allowed to request.
   static const int32_t kMaxReadSize;
   // The maximum number of bytes that each PpapiHostMsg_PPBTCPSocket_Write
   // message is allowed to carry.
   static const int32_t kMaxWriteSize;
 
   // The maximum number that we allow for setting
   // PP_TCPSOCKET_OPTION_SEND_BUFFER_SIZE. This number is only for input
   // argument sanity check, it doesn't mean the browser guarantees to support
   // such a buffer size.
   static const int32_t kMaxSendBufferSize;
   // The maximum number that we allow for setting
   // PP_TCPSOCKET_OPTION_RECV_BUFFER_SIZE. This number is only for input
   // argument sanity check, it doesn't mean the browser guarantees to support
   // such a buffer size.
   static const int32_t kMaxReceiveBufferSize;
 
  protected:
-  enum ConnectionState {
-    // Before a connection is successfully established (including a connect
-    // request is pending or a previous connect request failed).
-    BEFORE_CONNECT,
-    // A connection has been successfully established (including a request of
-    // initiating SSL is pending).
-    CONNECTED,
-    // An SSL connection has been successfully established.
-    SSL_CONNECTED,
-    // The connection has been ended.
-    DISCONNECTED
-  };
-
   // C-tor used for new sockets.
   TCPSocketResourceBase(Connection connection,
                         PP_Instance instance,
-                        bool private_api);
+                        TCPSocketVersion version);
 
   // C-tor used for already accepted sockets.
   TCPSocketResourceBase(Connection connection,
                         PP_Instance instance,
-                        bool private_api,
+                        TCPSocketVersion version,
                         const PP_NetAddress_Private& local_addr,
                         const PP_NetAddress_Private& remote_addr);
 
   virtual ~TCPSocketResourceBase();
 
+  // Implemented by subclasses to create resources for accepted sockets.
+  virtual PP_Resource CreateAcceptedSocket(
+      int pending_host_id,
+      const PP_NetAddress_Private& local_addr,
+      const PP_NetAddress_Private& remote_addr) = 0;
+
+  int32_t BindImpl(const PP_NetAddress_Private* addr,
+                   scoped_refptr<TrackedCallback> callback);
   int32_t ConnectImpl(const char* host,
                       uint16_t port,
                       scoped_refptr<TrackedCallback> callback);
   int32_t ConnectWithNetAddressImpl(const PP_NetAddress_Private* addr,
                                     scoped_refptr<TrackedCallback> callback);
   PP_Bool GetLocalAddressImpl(PP_NetAddress_Private* local_addr);
   PP_Bool GetRemoteAddressImpl(PP_NetAddress_Private* remote_addr);
   int32_t SSLHandshakeImpl(const char* server_name,
                            uint16_t server_port,
                            scoped_refptr<TrackedCallback> callback);
   PP_Resource GetServerCertificateImpl();
   PP_Bool AddChainBuildingCertificateImpl(PP_Resource certificate,
                                           PP_Bool trusted);
   int32_t ReadImpl(char* buffer,
                    int32_t bytes_to_read,
                    scoped_refptr<TrackedCallback> callback);
   int32_t WriteImpl(const char* buffer,
                     int32_t bytes_to_write,
                     scoped_refptr<TrackedCallback> callback);
-  void DisconnectImpl();
+  int32_t ListenImpl(int32_t backlog, scoped_refptr<TrackedCallback> callback);
+  int32_t AcceptImpl(PP_Resource* accepted_tcp_socket,
+                     scoped_refptr<TrackedCallback> callback);
+  void CloseImpl();
   int32_t SetOptionImpl(PP_TCPSocket_Option name,
                         const PP_Var& value,
                         scoped_refptr<TrackedCallback> callback);
 
-  bool IsConnected() const;
   void PostAbortIfNecessary(scoped_refptr<TrackedCallback>* callback);
 
   // IPC message handlers.
+  void OnPluginMsgBindReply(const ResourceMessageReplyParams& params,
+                            const PP_NetAddress_Private& local_addr);
   void OnPluginMsgConnectReply(const ResourceMessageReplyParams& params,
                                const PP_NetAddress_Private& local_addr,
                                const PP_NetAddress_Private& remote_addr);
   void OnPluginMsgSSLHandshakeReply(
       const ResourceMessageReplyParams& params,
       const PPB_X509Certificate_Fields& certificate_fields);
   void OnPluginMsgReadReply(const ResourceMessageReplyParams& params,
                             const std::string& data);
   void OnPluginMsgWriteReply(const ResourceMessageReplyParams& params);
+  void OnPluginMsgListenReply(const ResourceMessageReplyParams& params);
+  void OnPluginMsgAcceptReply(const ResourceMessageReplyParams& params,
+                              int pending_host_id,
+                              const PP_NetAddress_Private& local_addr,
+                              const PP_NetAddress_Private& remote_addr);
   void OnPluginMsgSetOptionReply(const ResourceMessageReplyParams& params);
 
+  scoped_refptr<TrackedCallback> bind_callback_;
   scoped_refptr<TrackedCallback> connect_callback_;
   scoped_refptr<TrackedCallback> ssl_handshake_callback_;
   scoped_refptr<TrackedCallback> read_callback_;
   scoped_refptr<TrackedCallback> write_callback_;
+  scoped_refptr<TrackedCallback> listen_callback_;
+  scoped_refptr<TrackedCallback> accept_callback_;
   std::queue<scoped_refptr<TrackedCallback> > set_option_callbacks_;
 
-  ConnectionState connection_state_;
+  TCPSocketState state_;
   char* read_buffer_;
   int32_t bytes_to_read_;
 
   PP_NetAddress_Private local_addr_;
   PP_NetAddress_Private remote_addr_;
 
   scoped_refptr<PPB_X509Certificate_Private_Shared> server_certificate_;
 
   std::vector<std::vector<char> > trusted_certificates_;
   std::vector<std::vector<char> > untrusted_certificates_;
 
+  PP_Resource* accepted_tcp_socket_;
+
  private:
   void RunCallback(scoped_refptr<TrackedCallback> callback, int32_t pp_result);
 
-  bool private_api_;
+  TCPSocketVersion version_;
 
   DISALLOW_COPY_AND_ASSIGN(TCPSocketResourceBase);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_TCP_SOCKET_RESOURCE_BASE_H_