2 * miracle_server.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.
21 /* System header files */
34 #include <netinet/in.h>
37 #include <arpa/inet.h>
39 /* Application header files */
40 #include "miracle_server.h"
41 #include "miracle_connection.h"
42 #include "miracle_local.h"
43 #include "miracle_log.h"
44 #include <valerie/valerie_remote.h>
45 #include <valerie/valerie_tokeniser.h>
47 #define VERSION "0.0.1"
49 static void miracle_command_received( mlt_listener listener
, mlt_properties owner
, miracle_server
this, void **args
)
51 if ( listener
!= NULL
)
52 listener( owner
, this, ( valerie_response
** )args
[ 0 ], ( char * )args
[ 1 ] );
55 static void miracle_doc_received( mlt_listener listener
, mlt_properties owner
, miracle_server
this, void **args
)
57 if ( listener
!= NULL
)
58 listener( owner
, this, ( valerie_response
** )args
[ 0 ], ( char * )args
[ 1 ], ( char * )args
[ 2 ] );
61 static void miracle_push_received( mlt_listener listener
, mlt_properties owner
, miracle_server
this, void **args
)
63 if ( listener
!= NULL
)
64 listener( owner
, this, ( valerie_response
** )args
[ 0 ], ( char * )args
[ 1 ], ( mlt_service
)args
[ 2 ] );
67 /** Initialise a server structure.
70 miracle_server
miracle_server_init( char *id
)
72 miracle_server server
= malloc( sizeof( miracle_server_t
) );
74 memset( server
, 0, sizeof( miracle_server_t
) );
75 if ( server
!= NULL
&& mlt_properties_init( &server
->parent
, server
) == 0 )
78 server
->port
= DEFAULT_TCP_PORT
;
81 mlt_events_init( &server
->parent
);
82 mlt_events_register( &server
->parent
, "command-received", ( mlt_transmitter
)miracle_command_received
);
83 mlt_events_register( &server
->parent
, "doc-received", ( mlt_transmitter
)miracle_doc_received
);
84 mlt_events_register( &server
->parent
, "push-received", ( mlt_transmitter
)miracle_push_received
);
89 void miracle_server_set_config( miracle_server server
, char *config
)
93 free( server
->config
);
94 server
->config
= config
!= NULL ?
strdup( config
) : NULL
;
98 /** Set the port of the server.
101 void miracle_server_set_port( miracle_server server
, int port
)
106 void miracle_server_set_proxy( miracle_server server
, char *proxy
)
108 valerie_tokeniser tokeniser
= valerie_tokeniser_init( );
110 server
->remote_port
= DEFAULT_TCP_PORT
;
111 valerie_tokeniser_parse_new( tokeniser
, proxy
, ":" );
112 strcpy( server
->remote_server
, valerie_tokeniser_get_string( tokeniser
, 0 ) );
113 if ( valerie_tokeniser_count( tokeniser
) == 2 )
114 server
->remote_port
= atoi( valerie_tokeniser_get_string( tokeniser
, 1 ) );
115 valerie_tokeniser_close( tokeniser
);
118 /** Wait for a connection.
121 static int miracle_server_wait_for_connect( miracle_server server
)
126 /* Wait for a 1 second. */
131 FD_SET( server
->socket
, &rfds
);
133 return select( server
->socket
+ 1, &rfds
, NULL
, NULL
, &tv
);
136 /** Run the server thread.
139 static void *miracle_server_run( void *arg
)
141 miracle_server server
= arg
;
142 pthread_t cmd_parse_info
;
143 connection_t
*tmp
= NULL
;
144 pthread_attr_t thread_attributes
;
147 socksize
= sizeof( struct sockaddr
);
149 miracle_log( LOG_NOTICE
, "%s version %s listening on port %i", server
->id
, VERSION
, server
->port
);
151 /* Create the initial thread. We want all threads to be created detached so
152 their resources get freed automatically. (CY: ... hmmph...) */
153 pthread_attr_init( &thread_attributes
);
154 pthread_attr_setdetachstate( &thread_attributes
, PTHREAD_CREATE_DETACHED
);
155 pthread_attr_init( &thread_attributes
);
156 pthread_attr_setinheritsched( &thread_attributes
, PTHREAD_INHERIT_SCHED
);
157 /* pthread_attr_setschedpolicy( &thread_attributes, SCHED_RR ); */
159 while ( !server
->shutdown
)
161 /* Wait for a new connection. */
162 if ( miracle_server_wait_for_connect( server
) )
164 /* Create a new block of data to hold a copy of the incoming connection for
165 our server thread. The thread should free this when it terminates. */
167 tmp
= (connection_t
*) malloc( sizeof(connection_t
) );
168 tmp
->owner
= &server
->parent
;
169 tmp
->parser
= server
->parser
;
170 tmp
->fd
= accept( server
->socket
, (struct sockaddr
*) &(tmp
->sin
), &socksize
);
172 /* Pass the connection to a parser thread :-/ */
174 pthread_create( &cmd_parse_info
, &thread_attributes
, parser_thread
, tmp
);
178 miracle_log( LOG_NOTICE
, "%s version %s server terminated.", server
->id
, VERSION
);
183 /** Execute the server thread.
186 int miracle_server_execute( miracle_server server
)
189 valerie_response response
= NULL
;
191 struct sockaddr_in ServerAddr
;
194 server
->shutdown
= 0;
196 ServerAddr
.sin_family
= AF_INET
;
197 ServerAddr
.sin_port
= htons( server
->port
);
198 ServerAddr
.sin_addr
.s_addr
= INADDR_ANY
;
200 /* Create socket, and bind to port. Listen there. Backlog = 5
201 should be sufficient for listen (). */
202 server
->socket
= socket( AF_INET
, SOCK_STREAM
, 0 );
204 if ( server
->socket
== -1 )
206 server
->shutdown
= 1;
208 miracle_log( LOG_ERR
, "%s unable to create socket.", server
->id
);
212 setsockopt( server
->socket
, SOL_SOCKET
, SO_REUSEADDR
, (char *)&flag
, sizeof( int ) );
214 if ( bind( server
->socket
, (struct sockaddr
*) &ServerAddr
, sizeof (ServerAddr
) ) != 0 )
216 server
->shutdown
= 1;
218 miracle_log( LOG_ERR
, "%s unable to bind to port %d.", server
->id
, server
->port
);
222 if ( listen( server
->socket
, 5 ) != 0 )
224 server
->shutdown
= 1;
226 miracle_log( LOG_ERR
, "%s unable to listen on port %d.", server
->id
, server
->port
);
230 fcntl( server
->socket
, F_SETFL
, O_NONBLOCK
);
232 if ( !server
->proxy
)
234 miracle_log( LOG_NOTICE
, "Starting server on %d.", server
->port
);
235 server
->parser
= miracle_parser_init_local( );
239 miracle_log( LOG_NOTICE
, "Starting proxy for %s:%d on %d.", server
->remote_server
, server
->remote_port
, server
->port
);
240 server
->parser
= valerie_parser_init_remote( server
->remote_server
, server
->remote_port
);
243 response
= valerie_parser_connect( server
->parser
);
245 if ( response
!= NULL
&& valerie_response_get_error_code( response
) == 100 )
247 /* read configuration file */
248 if ( response
!= NULL
&& !server
->proxy
&& server
->config
!= NULL
)
250 valerie_response_close( response
);
251 response
= valerie_parser_run( server
->parser
, server
->config
);
253 if ( valerie_response_count( response
) > 1 )
255 if ( valerie_response_get_error_code( response
) > 299 )
256 miracle_log( LOG_ERR
, "Error evaluating server configuration. Processing stopped." );
257 for ( index
= 0; index
< valerie_response_count( response
); index
++ )
258 miracle_log( LOG_DEBUG
, "%4d: %s", index
, valerie_response_get_line( response
, index
) );
262 if ( response
!= NULL
)
266 pthread_attr_init( &attr
);
267 pthread_attr_setdetachstate( &attr
, PTHREAD_CREATE_JOINABLE
);
268 pthread_attr_setinheritsched( &attr
, PTHREAD_EXPLICIT_SCHED
);
269 pthread_attr_setschedpolicy( &attr
, SCHED_FIFO
);
270 pthread_attr_setscope( &attr
, PTHREAD_SCOPE_SYSTEM
);
271 valerie_response_close( response
);
272 result
= pthread_create( &server
->thread
, &attr
, miracle_server_run
, server
);
275 miracle_log( LOG_WARNING
, "Failed to schedule realtime (%s)", strerror(errno
) );
276 pthread_attr_setschedpolicy( &attr
, SCHED_OTHER
);
277 result
= pthread_create( &server
->thread
, &attr
, miracle_server_run
, server
);
280 miracle_log( LOG_CRIT
, "Failed to launch TCP listener thread" );
288 miracle_log( LOG_ERR
, "Error connecting to parser. Processing stopped." );
289 server
->shutdown
= 1;
296 /** Shutdown the server.
299 void miracle_server_shutdown( miracle_server server
)
301 if ( server
!= NULL
&& !server
->shutdown
)
303 server
->shutdown
= 1;
304 pthread_join( server
->thread
, NULL
);
305 miracle_server_set_config( server
, NULL
);
306 valerie_parser_close( server
->parser
);
307 server
->parser
= NULL
;
308 close( server
->socket
);
312 /** Close the server.
315 void miracle_server_close( miracle_server server
)
317 if ( server
!= NULL
&& mlt_properties_dec_ref( &server
->parent
) <= 0 )
319 mlt_properties_close( &server
->parent
);
320 miracle_server_shutdown( server
);