501 lines
11 KiB
C
501 lines
11 KiB
C
/*
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* Copyright (C) 2009 Mamadou Diop.
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*
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* Contact: Mamadou Diop <diopmamadou@yahoo.fr>
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*
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* This file is part of Open Source Doubango Framework.
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*
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* DOUBANGO is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* DOUBANGO is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with DOUBANGO.
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*
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*/
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/**@file tnet_transport_32.c
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* @brief Network transport layer for WIN32 and WINCE systems.
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*
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* @author Mamadou Diop <diopmamadou(at)yahoo.fr>
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*
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* @date Created: Sat Nov 8 16:54:58 2009 mdiop
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*/
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#include "tnet_transport.h"
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#include "tsk_memory.h"
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#include "tsk_string.h"
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#include "tsk_debug.h"
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#include "tsk_thread.h"
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#include "tsk_buffer.h"
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#if TNET_USE_POLL
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#include "tnet_poll.h"
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#define TNET_MAX_FDS 64
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/*== Socket description ==*/
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typedef struct transport_socket_s
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{
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tnet_fd_t fd;
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unsigned connected:1;
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}
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transport_socket_t;
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/*== Transport context structure definition ==*/
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typedef struct transport_context_s
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{
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size_t count;
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short events;
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tnet_fd_t pipeW;
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tnet_pollfd_t ufds[TNET_MAX_FDS];
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transport_socket_t* sockets[TNET_MAX_FDS];
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}
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transport_context_t;
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static void transport_socket_add(tnet_fd_t fd, transport_context_t *context);
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static void transport_socket_set_connected(tnet_fd_t fd, transport_context_t *context, int connected);
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static void transport_socket_remove(int index, transport_context_t *context);
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/* Checks if socket is connected */
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int tnet_transport_isconnected(const tnet_transport_handle_t *handle, tnet_fd_t fd)
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{
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tnet_transport_t *transport = (tnet_transport_t*)handle;
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transport_context_t *context;
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size_t i;
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if(!transport)
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{
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TSK_DEBUG_ERROR("Invalid server handle.");
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return 0;
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}
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context = (transport_context_t*)transport->context;
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for(i=0; i<context->count; i++)
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{
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const transport_socket_t* socket = context->sockets[i];
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if(socket->fd == fd)
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{
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return socket->connected;
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}
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}
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return 0;
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}
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int tnet_transport_add_socket(const tnet_transport_handle_t *handle, tnet_fd_t fd)
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{
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tnet_transport_t *transport = (tnet_transport_t*)handle;
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transport_context_t *context;
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int ret = -1;
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if(!transport)
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{
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TSK_DEBUG_ERROR("Invalid server handle.");
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return ret;
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}
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context = (transport_context_t*)transport->context;
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if(context)
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{
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static char c = '\0';
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transport_socket_add(fd, context);
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// signal
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return (write(context->pipeW, &c, 1) > 0);
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}
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// ...
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return -1;
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}
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tnet_fd_t tnet_transport_connectto(const tnet_transport_handle_t *handle, const char* host, tnet_port_t port)
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{
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tnet_transport_t *transport = (tnet_transport_t*)handle;
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struct sockaddr_storage to;
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int status = -1;
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tnet_fd_t fd = TNET_INVALID_SOCKET;
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if(!transport || !transport->master)
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{
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TSK_DEBUG_ERROR("Invalid transport handle.");
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goto bail;
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}
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/* Init destination sockaddr fields */
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if((status = tnet_sockaddr_init(host, port, transport->master->type, &to)))
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{
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TSK_DEBUG_ERROR("Invalid HOST/PORT.");
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goto bail;
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}
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/*
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* STREAM ==> create new socket add connect it to the remote host.
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* DGRAM ==> connect the master to the remote host.
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*/
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if(TNET_SOCKET_TYPE_IS_STREAM(transport->master->type))
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{
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/* Create client socket descriptor. */
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if((status = tnet_sockfd_init(TNET_SOCKET_HOST_ANY, TNET_SOCKET_PORT_ANY, transport->master->type, &fd)))
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{
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TSK_DEBUG_ERROR("Failed to create new sockfd.");
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goto bail;
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}
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/* Add the socket */
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if((status = tnet_transport_add_socket(handle, fd)))
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{
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TNET_PRINT_LAST_ERROR(Failed to add new socket.");
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tnet_sockfd_close(&fd);
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goto bail;
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}
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}
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else
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{
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fd = transport->master->fd;
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}
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#if TNET_HAVE_SS_LEN
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if((status = connect(fd, (struct sockaddr*)&to, to.ss_len)))
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#else
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if((status = connect(fd, (struct sockaddr*)&to, sizeof(to))))
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#endif
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{
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status = tnet_geterrno();
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if(status == TNET_ERROR_WOULDBLOCK || status == TNET_ERROR_INPROGRESS)
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{
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TSK_DEBUG_INFO("TNET_ERROR_WOULDBLOCK/TNET_ERROR_INPROGRESS error for Connect operation");
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status = 0;
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}
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else
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{
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TNET_PRINT_LAST_ERROR("connect have failed.");
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//--tnet_sockfd_close(&fd);
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goto bail;
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}
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}
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/* update connection status */
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transport_socket_set_connected(fd, transport->context, (status==0));
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bail:
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return fd;
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}
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size_t tnet_transport_send(const tnet_transport_handle_t *handle, tnet_fd_t from, const void* buf, size_t size)
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{
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tnet_transport_t *transport = (tnet_transport_t*)handle;
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int numberOfBytesSent = 0;
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if(!transport)
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{
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TSK_DEBUG_ERROR("Invalid transport handle.");
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goto bail;
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}
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if((numberOfBytesSent = send(from, buf, size, 0)) <= 0)
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{
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TNET_PRINT_LAST_ERROR("send have failed.");
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//tnet_sockfd_close(&from);
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goto bail;
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}
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bail:
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return numberOfBytesSent;
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}
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size_t tnet_transport_sendto(const tnet_transport_handle_t *handle, tnet_fd_t from, const struct sockaddr *to, const void* buf, size_t size)
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{
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tnet_transport_t *transport = (tnet_transport_t*)handle;
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int numberOfBytesSent = 0;
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if(!transport)
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{
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TSK_DEBUG_ERROR("Invalid server handle.");
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goto bail;
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}
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if(!TNET_SOCKET_TYPE_IS_DGRAM(transport->master->type))
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{
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TSK_DEBUG_ERROR("In order to use WSASendTo you must use an udp transport.");
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goto bail;
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}
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if((numberOfBytesSent = sendto(from, buf, size, 0, to, sizeof(*to))) <= 0)
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{
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TNET_PRINT_LAST_ERROR("sendto have failed.");
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goto bail;
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}
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bail:
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return numberOfBytesSent;
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}
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int tnet_transport_has_socket(const tnet_transport_handle_t *handle, tnet_fd_t fd)
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{
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tnet_transport_t *transport = (tnet_transport_t*)handle;
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transport_context_t *context;
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size_t i;
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if(!transport)
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{
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TSK_DEBUG_ERROR("Invalid server handle.");
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return 0;
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}
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context = (transport_context_t*)transport->context;
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for(i=0; i<context->count; i++)
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{
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if(context->sockets[i]->fd == fd)
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{
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return 1;
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}
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}
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return 0;
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}
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/*== Add new socket ==*/
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void transport_socket_add(tnet_fd_t fd, transport_context_t *context)
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{
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transport_socket_t *sock = tsk_calloc(1, sizeof(transport_socket_t));
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sock->fd = fd;
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context->ufds[context->count].fd = fd;
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context->ufds[context->count].events = context->events;
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context->sockets[context->count] = sock;
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context->count++;
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}
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/*== change connection state ==*/
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static void transport_socket_set_connected(tnet_fd_t fd, transport_context_t *context, int connected)
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{
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size_t i;
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for(i=0; i<context->count; i++)
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{
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if(context->sockets[i]->fd == fd)
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{
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context->sockets[i]->connected = connected;
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}
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}
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}
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/*== Remove socket ==*/
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void transport_socket_remove(int index, transport_context_t *context)
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{
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int i;
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if(index < (int)context->count)
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{
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tnet_sockfd_close(&(context->sockets[index]->fd));
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TSK_FREE(context->sockets[index]);
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for(i=index ; i<context->count-1; i++)
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{
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context->sockets[i] = context->sockets[i+1];
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}
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context->sockets[context->count-1] = 0;
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context->count--;
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}
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}
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int tnet_transport_stop(tnet_transport_t *transport)
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{
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int ret;
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transport_context_t *context;
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if(!transport)
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{
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return -1;
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}
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context = transport->context;
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if((ret = tsk_runnable_stop(TSK_RUNNABLE(transport))))
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{
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return ret;
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}
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if(context)
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{
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static char c = '\0';
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// signal
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write(context->pipeW, &c, 1);
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}
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return tsk_thread_join(transport->mainThreadId);
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}
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/*=== Main thread */
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void *tnet_transport_mainthread(void *param)
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{
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tnet_transport_t *transport = param;
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transport_context_t *context;
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tnet_fd_t pipes[2];
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int ret;
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size_t i;
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transport_socket_t* active_socket;
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context = (transport_context_t*)tsk_calloc(1, sizeof(transport_context_t));
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context->events = TNET_SOCKET_TYPE_IS_DGRAM(transport->master->type) ? TNET_POLLIN : TNET_POLLIN | TNET_POLLOUT | TNET_POLLPRI;
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transport->context = context;
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/* Start listening */
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if(TNET_SOCKET_TYPE_IS_STREAM(transport->master->type))
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{
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if(listen(transport->master->fd, TNET_MAX_FDS))
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{
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TNET_PRINT_LAST_ERROR("listen have failed.");
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goto bail;
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}
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}
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/* Create and add pipes to the fd_set */
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if((ret = pipe(pipes)))
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{
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TNET_PRINT_LAST_ERROR("Failed to create new pipes.");
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goto bail;
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}
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transport_socket_add(pipes[0], context); // Add pipeR
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context->pipeW = pipes[1];
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/* Add the current transport socket to the context. */
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transport_socket_add(transport->master->fd, context);
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/* Set transport to active */
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transport->active = 1;
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TSK_DEBUG_INFO("Starting [%s] server with IP {%s} on port {%d}...", transport->description, transport->master->ip, transport->master->port);
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while(TSK_RUNNABLE(transport)->running)
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{
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if((ret = tnet_poll(context->ufds, context->count, -1)) < 0)
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{
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TNET_PRINT_LAST_ERROR("poll have failed.");
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goto bail;
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}
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if(!TSK_RUNNABLE(transport)->running)
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{
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goto bail;
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}
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/*
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*
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*/
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for(i=0; i<context->count; i++)
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{
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if(!context->ufds[i].revents) continue;
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/* Get active event and socket */
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active_socket = context->sockets[i];
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/*================== POLLIN ==================*/
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if(context->ufds[i].revents & TNET_POLLIN)
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{
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size_t len = 0;
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void* buffer = 0;
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TSK_DEBUG_INFO("NETWORK EVENT FOR SERVER [%s] -- TNET_POLLIN", transport->description);
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/* Retrieve the amount of pending data.
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* IMPORTANT: If you are using Symbian please update your SDK to the latest build (August 2009) to have 'FIONREAD'.
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* This apply whatever you are using the 3rd or 5th edition.
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* Download link: http://wiki.forum.nokia.com/index.php/Open_C/C%2B%2B_Release_History
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*/
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if(tnet_ioctlt(active_socket->fd, FIONREAD, &len) < 0)
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{
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TNET_PRINT_LAST_ERROR("IOCTLT FAILED.");
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continue;
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}
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if(!(buffer = tsk_calloc(len, sizeof(uint8_t))))
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{
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TSK_DEBUG_ERROR("TSK_CALLOC FAILED.");
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continue;
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}
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/* Receive the waiting data. */
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if(recv(active_socket->fd, buffer, len, 0) < 0)
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{
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TSK_FREE(buffer);
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//if(tnet_geterrno() == TNET_ERROR_WOULDBLOCK)
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{
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//TSK_DEBUG_INFO("WSAEWOULDBLOCK error for READ operation");
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}
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//else
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{
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transport_socket_remove(i, context);
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TNET_PRINT_LAST_ERROR("recv have failed.");
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continue;
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}
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}
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else
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{
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tsk_buffer_t *BUFFER = TSK_BUFFER_CREATE_NULL();
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BUFFER->data = buffer;
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BUFFER->size = len;
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//printf("====\n\n%s\n\n====", buffer);
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TSK_RUNNABLE_ENQUEUE_OBJECT(TSK_RUNNABLE(transport), BUFFER);
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}
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}
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/*================== TNET_POLLOUT ==================*/
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if(context->ufds[i].revents & TNET_POLLOUT)
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{
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TSK_DEBUG_INFO("NETWORK EVENT FOR SERVER [%s] -- TNET_POLLOUT", transport->description);
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}
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/*================== TNET_POLLPRI ==================*/
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if(context->ufds[i].revents & TNET_POLLPRI)
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{
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TSK_DEBUG_INFO("NETWORK EVENT FOR SERVER [%s] -- TNET_POLLPRI", transport->description);
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}
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}/* for */
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}
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bail:
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transport->active = 0;
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/* cleanup */
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while(context->count)
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{
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transport_socket_remove(0, context);
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}
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TSK_DEBUG_INFO("Stopping [%s] server with IP {%s} on port {%d}...", transport->description, transport->master->ip, transport->master->port);
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return 0;
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}
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#endif /* HAVE_POLL_H */
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