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 /** Initialise a server structure.
52 miracle_server miracle_server_init( char *id )
54 miracle_server server = malloc( sizeof( miracle_server_t ) );
57 memset( server, 0, sizeof( miracle_server_t ) );
59 server->port = DEFAULT_TCP_PORT;
65 void miracle_server_set_config( miracle_server server, char *config )
69 free( server->config );
70 server->config = config != NULL ? strdup( config ) : NULL;
74 /** Set the port of the server.
77 void miracle_server_set_port( miracle_server server, int port )
82 void miracle_server_set_proxy( miracle_server server, char *proxy )
84 valerie_tokeniser tokeniser = valerie_tokeniser_init( );
86 server->remote_port = DEFAULT_TCP_PORT;
87 valerie_tokeniser_parse_new( tokeniser, proxy, ":" );
88 strcpy( server->remote_server, valerie_tokeniser_get_string( tokeniser, 0 ) );
89 if ( valerie_tokeniser_count( tokeniser ) == 2 )
90 server->remote_port = atoi( valerie_tokeniser_get_string( tokeniser, 1 ) );
91 valerie_tokeniser_close( tokeniser );
94 /** Wait for a connection.
97 static int miracle_server_wait_for_connect( miracle_server server )
102 /* Wait for a 1 second. */
107 FD_SET( server->socket, &rfds );
109 return select( server->socket + 1, &rfds, NULL, NULL, &tv);
112 /** Run the server thread.
115 static void *miracle_server_run( void *arg )
117 miracle_server server = arg;
118 pthread_t cmd_parse_info;
119 connection_t *tmp = NULL;
120 pthread_attr_t thread_attributes;
123 socksize = sizeof( struct sockaddr );
125 miracle_log( LOG_NOTICE, "%s version %s listening on port %i", server->id, VERSION, server->port );
127 /* Create the initial thread. We want all threads to be created detached so
128 their resources get freed automatically. (CY: ... hmmph...) */
129 pthread_attr_init( &thread_attributes );
130 pthread_attr_setdetachstate( &thread_attributes, PTHREAD_CREATE_DETACHED );
131 pthread_attr_init( &thread_attributes );
132 pthread_attr_setinheritsched( &thread_attributes, PTHREAD_INHERIT_SCHED );
133 /* pthread_attr_setschedpolicy( &thread_attributes, SCHED_RR ); */
135 while ( !server->shutdown )
137 /* Wait for a new connection. */
138 if ( miracle_server_wait_for_connect( server ) )
140 /* Create a new block of data to hold a copy of the incoming connection for
141 our server thread. The thread should free this when it terminates. */
143 tmp = (connection_t*) malloc( sizeof(connection_t) );
144 tmp->parser = server->parser;
145 tmp->fd = accept( server->socket, (struct sockaddr*) &(tmp->sin), &socksize );
147 /* Pass the connection to a parser thread :-/ */
149 pthread_create( &cmd_parse_info, &thread_attributes, parser_thread, tmp );
153 miracle_log( LOG_NOTICE, "%s version %s server terminated.", server->id, VERSION );
158 /** Execute the server thread.
161 int miracle_server_execute( miracle_server server )
164 valerie_response response = NULL;
166 struct sockaddr_in ServerAddr;
169 ServerAddr.sin_family = AF_INET;
170 ServerAddr.sin_port = htons( server->port );
171 ServerAddr.sin_addr.s_addr = INADDR_ANY;
173 /* Create socket, and bind to port. Listen there. Backlog = 5
174 should be sufficient for listen (). */
175 server->socket = socket( AF_INET, SOCK_STREAM, 0 );
177 if ( server->socket == -1 )
179 server->shutdown = 1;
181 miracle_log( LOG_ERR, "%s unable to create socket.", server->id );
185 setsockopt( server->socket, SOL_SOCKET, SO_REUSEADDR, (char *)&flag, sizeof( int ) );
187 if ( bind( server->socket, (struct sockaddr *) &ServerAddr, sizeof (ServerAddr) ) != 0 )
189 server->shutdown = 1;
191 miracle_log( LOG_ERR, "%s unable to bind to port %d.", server->id, server->port );
195 if ( listen( server->socket, 5 ) != 0 )
197 server->shutdown = 1;
199 miracle_log( LOG_ERR, "%s unable to listen on port %d.", server->id, server->port );
203 fcntl( server->socket, F_SETFL, O_NONBLOCK );
205 if ( !server->proxy )
207 miracle_log( LOG_NOTICE, "Starting server on %d.", server->port );
208 server->parser = miracle_parser_init_local( );
212 miracle_log( LOG_NOTICE, "Starting proxy for %s:%d on %d.", server->remote_server, server->remote_port, server->port );
213 server->parser = valerie_parser_init_remote( server->remote_server, server->remote_port );
216 response = valerie_parser_connect( server->parser );
218 if ( response != NULL && valerie_response_get_error_code( response ) == 100 )
220 /* read configuration file */
221 if ( response != NULL && !server->proxy && server->config != NULL )
223 valerie_response_close( response );
224 response = valerie_parser_run( server->parser, server->config );
226 if ( valerie_response_count( response ) > 1 )
228 if ( valerie_response_get_error_code( response ) > 299 )
229 miracle_log( LOG_ERR, "Error evaluating server configuration. Processing stopped." );
230 for ( index = 0; index < valerie_response_count( response ); index ++ )
231 miracle_log( LOG_DEBUG, "%4d: %s", index, valerie_response_get_line( response, index ) );
235 if ( response != NULL )
239 pthread_attr_init( &attr );
240 pthread_attr_setdetachstate( &attr, PTHREAD_CREATE_JOINABLE );
241 pthread_attr_setinheritsched( &attr, PTHREAD_EXPLICIT_SCHED );
242 pthread_attr_setschedpolicy( &attr, SCHED_FIFO );
243 pthread_attr_setscope( &attr, PTHREAD_SCOPE_SYSTEM );
244 valerie_response_close( response );
245 result = pthread_create( &server->thread, &attr, miracle_server_run, server );
248 miracle_log( LOG_WARNING, "Failed to schedule realtime (%s)", strerror(errno) );
249 pthread_attr_setschedpolicy( &attr, SCHED_OTHER );
250 result = pthread_create( &server->thread, &attr, miracle_server_run, server );
253 miracle_log( LOG_CRIT, "Failed to launch TCP listener thread" );
261 miracle_log( LOG_ERR, "Error connecting to parser. Processing stopped." );
262 server->shutdown = 1;
269 /** Shutdown the server.
272 void miracle_server_shutdown( miracle_server server )
274 if ( server != NULL && !server->shutdown )
276 server->shutdown = 1;
277 pthread_join( server->thread, NULL );
278 miracle_server_set_config( server, NULL );
279 valerie_parser_close( server->parser );
280 server->parser = NULL;
281 close( server->socket );
285 /** Close the server.
288 void miracle_server_close( miracle_server server )
290 if ( server != NULL )
292 miracle_server_shutdown( server );