2 * valerie_remote.c -- Remote Parser
3 * Copyright (C) 2002-2003 Ushodaya Enterprises Limited
4 * Author: Charles Yates <charles.yates@pandora.be>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library 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 GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 /* System header files */
29 /* Application header files */
30 #include "valerie_remote.h"
31 #include "valerie_socket.h"
32 #include "valerie_tokeniser.h"
33 #include "valerie_util.h"
35 /** Private valerie_remote structure.
43 valerie_socket socket
;
44 valerie_socket status
;
46 valerie_parser parser
;
47 pthread_mutex_t mutex
;
50 *valerie_remote
, valerie_remote_t
;
52 /** Forward declarations.
55 static valerie_response
valerie_remote_connect( valerie_remote
);
56 static valerie_response
valerie_remote_execute( valerie_remote
, char * );
57 static void valerie_remote_close( valerie_remote
);
58 static int valerie_remote_read_response( valerie_socket
, valerie_response
);
60 /** DV Parser constructor.
63 valerie_parser
valerie_parser_init_remote( char *server
, int port
)
65 valerie_parser parser
= malloc( sizeof( valerie_parser_t
) );
66 valerie_remote remote
= malloc( sizeof( valerie_remote_t
) );
70 memset( parser
, 0, sizeof( valerie_parser_t
) );
72 parser
->connect
= (parser_connect
)valerie_remote_connect
;
73 parser
->execute
= (parser_execute
)valerie_remote_execute
;
74 parser
->close
= (parser_close
)valerie_remote_close
;
75 parser
->real
= remote
;
79 memset( remote
, 0, sizeof( valerie_remote_t
) );
80 remote
->parser
= parser
;
81 remote
->server
= strdup( server
);
83 pthread_mutex_init( &remote
->mutex
, NULL
);
89 /** Thread for receiving and distributing the status information.
92 static void *valerie_remote_status_thread( void *arg
)
94 valerie_remote remote
= arg
;
98 valerie_tokeniser tokeniser
= valerie_tokeniser_init( );
99 valerie_notifier notifier
= valerie_parser_get_notifier( remote
->parser
);
100 valerie_status_t status
;
103 valerie_socket_write_data( remote
->status
, "STATUS\r\n", 8 );
105 while ( !remote
->terminated
&&
106 ( length
= valerie_socket_read_data( remote
->status
, temp
+ offset
, sizeof( temp
) ) ) >= 0 )
108 if ( strchr( temp
, '\n' ) == NULL
)
114 valerie_tokeniser_parse_new( tokeniser
, temp
, "\n" );
115 for ( index
= 0; index
< valerie_tokeniser_count( tokeniser
); index
++ )
117 char *line
= valerie_tokeniser_get_string( tokeniser
, index
);
118 if ( line
[ strlen( line
) - 1 ] == '\r' )
120 valerie_util_chomp( line
);
121 valerie_status_parse( &status
, line
);
122 valerie_notifier_put( notifier
, &status
);
126 strcpy( temp
, line
);
127 offset
= strlen( temp
);
132 valerie_notifier_disconnected( notifier
);
133 valerie_tokeniser_close( tokeniser
);
134 remote
->terminated
= 1;
139 /** Forward reference.
142 static void valerie_remote_disconnect( valerie_remote remote
);
144 /** Connect to the server.
147 static valerie_response
valerie_remote_connect( valerie_remote remote
)
149 valerie_response response
= NULL
;
151 valerie_remote_disconnect( remote
);
153 if ( !remote
->connected
)
155 signal( SIGPIPE
, SIG_IGN
);
157 remote
->socket
= valerie_socket_init( remote
->server
, remote
->port
);
158 remote
->status
= valerie_socket_init( remote
->server
, remote
->port
);
160 if ( valerie_socket_connect( remote
->socket
) == 0 )
162 response
= valerie_response_init( );
163 valerie_remote_read_response( remote
->socket
, response
);
166 if ( response
!= NULL
&& valerie_socket_connect( remote
->status
) == 0 )
168 valerie_response status_response
= valerie_response_init( );
169 valerie_remote_read_response( remote
->status
, status_response
);
170 if ( valerie_response_get_error_code( status_response
) == 100 )
171 pthread_create( &remote
->thread
, NULL
, valerie_remote_status_thread
, remote
);
172 valerie_response_close( status_response
);
173 remote
->connected
= 1;
180 /** Execute the command.
183 static valerie_response
valerie_remote_execute( valerie_remote remote
, char *command
)
185 valerie_response response
= NULL
;
186 pthread_mutex_lock( &remote
->mutex
);
187 if ( valerie_socket_write_data( remote
->socket
, command
, strlen( command
) ) == strlen( command
) )
189 response
= valerie_response_init( );
190 valerie_socket_write_data( remote
->socket
, "\r\n", 2 );
191 valerie_remote_read_response( remote
->socket
, response
);
193 pthread_mutex_unlock( &remote
->mutex
);
200 static void valerie_remote_disconnect( valerie_remote remote
)
202 if ( remote
!= NULL
&& remote
->terminated
)
204 pthread_join( remote
->thread
, NULL
);
205 valerie_socket_close( remote
->status
);
206 valerie_socket_close( remote
->socket
);
207 remote
->connected
= 0;
208 remote
->terminated
= 0;
212 /** Close the parser.
215 static void valerie_remote_close( valerie_remote remote
)
217 if ( remote
!= NULL
)
219 remote
->terminated
= 1;
220 valerie_remote_disconnect( remote
);
221 pthread_mutex_destroy( &remote
->mutex
);
222 free( remote
->server
);
230 static int valerie_remote_read_response( valerie_socket socket
, valerie_response response
)
236 while ( !terminated
&& ( length
= valerie_socket_read_data( socket
, temp
, 10240 ) ) >= 0 )
239 temp
[ length
] = '\0';
240 valerie_response_write( response
, temp
, length
);
241 position
= valerie_response_count( response
) - 1;
242 if ( position
< 0 || temp
[ strlen( temp
) - 1 ] != '\n' )
244 switch( valerie_response_get_error_code( response
) )
248 terminated
= !strcmp( valerie_response_get_line( response
, position
), "" );
251 terminated
= valerie_response_count( response
) >= 2;