2 * dvserver.c -- DV Server
3 * Copyright (C) 2002-2003 Ushodaya Enterprises Limited
4 * Author: Charles Yates <charles.yates@pandora.be>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 /* System header files */
38 #include <netinet/in.h>
42 #include <arpa/inet.h>
44 /* Application header files */
46 #include "dvconnection.h"
50 #include <dvtokeniser.h>
52 /** Initialise a server structure.
55 dv_server dv_server_init( char *id )
57 dv_server server = malloc( sizeof( dv_server_t ) );
60 memset( server, 0, sizeof( dv_server_t ) );
62 server->port = DEFAULT_TCP_PORT;
68 /** Set the port of the server.
71 void dv_server_set_port( dv_server server, int port )
76 void dv_server_set_proxy( dv_server server, char *proxy )
78 dv_tokeniser tokeniser = dv_tokeniser_init( );
80 server->remote_port = DEFAULT_TCP_PORT;
81 dv_tokeniser_parse_new( tokeniser, proxy, ":" );
82 strcpy( server->remote_server, dv_tokeniser_get_string( tokeniser, 0 ) );
83 if ( dv_tokeniser_count( tokeniser ) == 2 )
84 server->remote_port = atoi( dv_tokeniser_get_string( tokeniser, 1 ) );
85 dv_tokeniser_close( tokeniser );
88 /** Wait for a connection.
91 static int dv_server_wait_for_connect( dv_server server )
96 /* Wait for a 1 second. */
101 FD_SET( server->socket, &rfds );
103 return select( server->socket + 1, &rfds, NULL, NULL, &tv);
106 /** Run the server thread.
109 static void *dv_server_run( void *arg )
111 dv_server server = arg;
112 pthread_t cmd_parse_info;
113 connection_t *tmp = NULL;
114 pthread_attr_t thread_attributes;
117 socksize = sizeof( struct sockaddr );
119 dv1394d_log( LOG_NOTICE, "%s version %s listening on port %i", server->id, VERSION, server->port );
121 /* Create the initial thread. We want all threads to be created detached so
122 their resources get freed automatically. (CY: ... hmmph...) */
123 pthread_attr_init( &thread_attributes );
124 pthread_attr_setdetachstate( &thread_attributes, PTHREAD_CREATE_DETACHED );
125 pthread_attr_init( &thread_attributes );
126 pthread_attr_setinheritsched( &thread_attributes, PTHREAD_INHERIT_SCHED );
127 /* pthread_attr_setschedpolicy( &thread_attributes, SCHED_RR ); */
129 while ( !server->shutdown )
131 /* Wait for a new connection. */
132 if ( dv_server_wait_for_connect( server ) )
134 /* Create a new block of data to hold a copy of the incoming connection for
135 our server thread. The thread should free this when it terminates. */
137 tmp = (connection_t*) malloc( sizeof(connection_t) );
138 tmp->parser = server->parser;
139 tmp->fd = accept( server->socket, (struct sockaddr*) &(tmp->sin), &socksize );
141 /* Pass the connection to a parser thread :-/ */
143 pthread_create( &cmd_parse_info, &thread_attributes, parser_thread, tmp );
147 dv1394d_log( LOG_NOTICE, "%s version %s server terminated.", server->id, VERSION );
152 /** Execute the server thread.
155 int dv_server_execute( dv_server server )
158 dv_response response = NULL;
160 struct sockaddr_in ServerAddr;
163 ServerAddr.sin_family = AF_INET;
164 ServerAddr.sin_port = htons( server->port );
165 ServerAddr.sin_addr.s_addr = INADDR_ANY;
167 /* Create socket, and bind to port. Listen there. Backlog = 5
168 should be sufficient for listen (). */
169 server->socket = socket( AF_INET, SOCK_STREAM, 0 );
171 if ( server->socket == -1 )
173 server->shutdown = 1;
175 dv1394d_log( LOG_ERR, "%s unable to create socket.", server->id );
179 setsockopt( server->socket, SOL_SOCKET, SO_REUSEADDR, (char *)&flag, sizeof( int ) );
181 if ( bind( server->socket, (struct sockaddr *) &ServerAddr, sizeof (ServerAddr) ) != 0 )
183 server->shutdown = 1;
185 dv1394d_log( LOG_ERR, "%s unable to bind to port %d.", server->id, server->port );
189 if ( listen( server->socket, 5 ) != 0 )
191 server->shutdown = 1;
193 dv1394d_log( LOG_ERR, "%s unable to listen on port %d.", server->id, server->port );
197 fcntl( server->socket, F_SETFL, O_NONBLOCK );
199 if ( !server->proxy )
201 dv1394d_log( LOG_NOTICE, "Starting server on %d.", server->port );
202 server->parser = dv_parser_init_local( );
206 dv1394d_log( LOG_NOTICE, "Starting proxy for %s:%d on %d.", server->remote_server, server->remote_port, server->port );
207 server->parser = dv_parser_init_remote( server->remote_server, server->remote_port );
210 response = dv_parser_connect( server->parser );
212 if ( response != NULL && dv_response_get_error_code( response ) == 100 )
214 /* read configuration file */
215 if ( response != NULL && !server->proxy )
217 dv_response_close( response );
218 response = dv_parser_run( server->parser, "/etc/dv1394d.conf" );
220 if ( dv_response_count( response ) > 1 )
222 if ( dv_response_get_error_code( response ) > 299 )
223 dv1394d_log( LOG_ERR, "Error evaluating server configuration. Processing stopped." );
224 for ( index = 0; index < dv_response_count( response ); index ++ )
225 dv1394d_log( LOG_DEBUG, "%4d: %s", index, dv_response_get_line( response, index ) );
229 if ( response != NULL )
233 pthread_attr_init( &attr );
234 pthread_attr_setdetachstate( &attr, PTHREAD_CREATE_JOINABLE );
235 pthread_attr_setinheritsched( &attr, PTHREAD_EXPLICIT_SCHED );
236 pthread_attr_setschedpolicy( &attr, SCHED_FIFO );
237 pthread_attr_setscope( &attr, PTHREAD_SCOPE_SYSTEM );
238 dv_response_close( response );
239 result = pthread_create( &server->thread, &attr, dv_server_run, server );
242 dv1394d_log( LOG_WARNING, "Failed to schedule realtime (%s)", strerror(errno) );
243 pthread_attr_setschedpolicy( &attr, SCHED_OTHER );
244 result = pthread_create( &server->thread, &attr, dv_server_run, server );
247 dv1394d_log( LOG_CRIT, "Failed to launch TCP listener thread" );
255 dv1394d_log( LOG_ERR, "Error connecting to parser. Processing stopped." );
256 server->shutdown = 1;
263 /** Shutdown the server.
266 void dv_server_shutdown( dv_server server )
268 if ( server != NULL && !server->shutdown )
270 server->shutdown = 1;
271 pthread_join( server->thread, NULL );
272 dv_parser_close( server->parser );
273 close( server->socket );