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
);