1 /*****************************************************************************
2 * slp.c: SLP access plugin
3 *****************************************************************************
4 * Copyright (C) 2002-2004 VideoLAN
7 * Authors: Loïc Minier <lool@videolan.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc */
30 #include <vlc/input.h>
32 #include <vlc_playlist.h>
36 /*****************************************************************************
38 *****************************************************************************/
39 static int Open ( vlc_object_t * );
40 static void Close ( vlc_object_t * );
41 static ssize_t Read( input_thread_t *, byte_t *, size_t );
43 static int Init ( vlc_object_t * );
44 static void End ( vlc_object_t * );
45 static int Demux ( input_thread_t * );
49 /*****************************************************************************
51 *****************************************************************************/
54 #define SRVTYPE_TEXT /*N_*/("SLP service type")
55 #define SRVTYPE_LONGTEXT /*N_*/( \
56 "The service type string for SLP queries, including the authority " \
57 "string (if any) for the request. May not be empty." )
60 #define ATTRIDS_TEXT N_("SLP attribute identifiers")
61 #define ATTRIDS_LONGTEXT N_( \
62 "This string is a comma separated list of attribute identifiers to " \
63 "search for a playlist title or empty to use all attributes." )
65 #define SCOPELIST_TEXT N_("SLP scopes list")
66 #define SCOPELIST_LONGTEXT N_( \
67 "This string is a comma separated list of scope names or empty if you " \
68 "want to use the default scopes. It is used in all SLP queries." )
70 #define NAMINGAUTHORITY_TEXT N_("SLP naming authority")
71 #define NAMINGAUTHORITY_LONGTEXT N_( \
72 "This string is a list of naming authorities to search. " \
73 "Use \"*\" for all and the empty string for the default of IANA." )
75 #define FILTER_TEXT N_("SLP LDAP filter")
76 #define FILTER_LONGTEXT N_( \
77 "This is a query formulated of attribute pattern matching expressions " \
78 "in the form of an LDAPv3 search filter or empty for all answers." )
80 #define LANG_TEXT N_("Language requested in SLP requests")
81 #define LANG_LONGTEXT N_( \
82 "RFC 1766 Language tag for the natural language locale of requests, " \
83 "leave empty to use the default locale. It is used in all SLP queries." )
86 set_description( _("SLP input") );
88 add_string( "slp-attrids", "", NULL, ATTRIDS_TEXT, ATTRIDS_LONGTEXT,
90 add_string( "slp-scopelist", "", NULL, SCOPELIST_TEXT,
91 SCOPELIST_LONGTEXT, VLC_TRUE );
92 add_string( "slp-namingauthority", "*", NULL, NAMINGAUTHORITY_TEXT,
93 NAMINGAUTHORITY_LONGTEXT, VLC_TRUE );
94 add_string( "slp-filter", "", NULL, FILTER_TEXT, FILTER_LONGTEXT,
96 add_string( "slp-lang", "", NULL, LANG_TEXT, LANG_LONGTEXT, VLC_TRUE );
98 set_capability( "access", 0 );
99 set_callbacks( Open, Close );
102 add_shortcut( "demux_slp" );
103 set_capability( "demux", 0 );
104 set_callbacks( Init, End );
107 /*****************************************************************************
108 * AttrCallback: updates the description of a playlist item
109 *****************************************************************************/
110 static SLPBoolean AttrCallback( SLPHandle slph_slp,
111 const char * psz_attrlist,
112 SLPError slpe_errcode,
115 playlist_item_t * p_playlist_item = (playlist_item_t *)p_cookie;
117 /* our callback was only called to tell us there's nothing more to read */
118 if( slpe_errcode == SLP_LAST_CALL )
123 /* or there was a problem with getting the data we requested */
124 if( (slpe_errcode != SLP_OK) )
127 msg_Err( (vlc_object_t*)NULL,
128 "AttrCallback got an error %i with attribute %s",
135 if( p_playlist_item->input.psz_name )
136 free( p_playlist_item->input.psz_name );
138 p_playlist_item->input.psz_name = strdup(psz_attrlist); /* NULL is checked */
142 /*****************************************************************************
143 * SrvUrlCallback: adds an entry to the playlist
144 *****************************************************************************/
145 static SLPBoolean SrvUrlCallback( SLPHandle slph_slp,
146 const char * psz_srvurl,
148 SLPError slpe_errcode,
151 input_thread_t *p_input = (input_thread_t *)p_cookie;
152 playlist_t * p_playlist;
153 char psz_item[42] = ""; //"udp:@";
154 char * psz_s; /* to hold the uri of the stream */
156 SLPError slpe_result;
157 playlist_item_t * p_playlist_item;
159 /* our callback was only called to tell us there's nothing more to read */
160 if( slpe_errcode == SLP_LAST_CALL )
165 msg_Dbg( p_input,"URL: %s", psz_srvurl );
167 /* or there was a problem with getting the data we requested */
168 if( (slpe_errcode != SLP_OK) )
170 msg_Err( p_input, "SrvUrlCallback got an error %i with URL %s",
171 slpe_errcode, psz_srvurl );
175 /* search the returned address after a double-slash */
176 psz_s = strstr( psz_srvurl, "//" );
180 "SrvUrlCallback got a strange string of your libslp" );
183 /* skip the slashes */
185 /* add udp:@ in front of the address */
186 psz_s = strncat( psz_item,
188 sizeof(psz_item) - strlen(psz_item) - 1 );
190 /* create a playlist item */
191 p_playlist_item = playlist_ItemNew( p_input, psz_s, NULL );
192 if( p_playlist_item == NULL )
194 msg_Err( p_input, "out of memory" );
198 p_playlist_item->i_group = i_group;
199 p_playlist_item->b_enabled = VLC_TRUE;
201 /* search the description of the stream */
202 if( SLPOpen( config_GetPsz( p_input, "slp-lang" ),
203 SLP_FALSE, /* synchronous ops */
204 &slph_slp3 ) == SLP_OK )
206 /* search all attributes */
207 slpe_result = SLPFindAttrs( slph_slp3,
209 config_GetPsz( p_input, "slp-scopelist" ),
210 config_GetPsz( p_input, "slp-attrids" ),
215 /* we're done, clean up */
216 SLPClose( slph_slp3 );
219 /* search the main playlist object */
220 p_playlist = vlc_object_find( p_input, VLC_OBJECT_PLAYLIST,
222 if( p_playlist == NULL )
224 msg_Warn( p_input, "could not find playlist, not adding entries" );
228 playlist_AddItem( p_playlist, p_playlist_item,
229 PLAYLIST_APPEND, PLAYLIST_END );
230 vlc_object_release( p_playlist );
232 msg_Info( p_input, "added « %s » (lifetime %i) to playlist",
233 psz_srvurl, i_lifetime );
238 /*****************************************************************************
239 * SrvTypeCallback: searchs all servers of a certain type
240 *****************************************************************************/
241 static SLPBoolean SrvTypeCallback( SLPHandle slph_slp,
242 const char * psz_srvurl,
243 SLPError slpe_errcode,
246 input_thread_t * p_input = (input_thread_t *)p_cookie;
247 SLPError slpe_result;
252 msg_Dbg( p_input, "services: %s", psz_srvurl );
253 /* our callback was only called to tell us there's nothing more to read */
254 if( slpe_errcode == SLP_LAST_CALL )
259 msg_Dbg( p_input, "services: %s", psz_srvurl );
261 /* or there was a problem with getting the data we requested */
262 if( slpe_errcode != SLP_OK )
264 msg_Err( p_input, "SrvTypeCallback got an error %i with URL %s",
265 slpe_errcode, psz_srvurl );
269 /* get a new handle to the library */
270 if( SLPOpen( config_GetPsz( p_input, "slp-lang" ),
271 SLP_FALSE, /* synchronous ops */
272 &slph_slp2 ) == SLP_OK )
274 /* search for services */
277 if( *psz_srvurl == '\0') break;
279 if( !strncasecmp( psz_srvurl, "service:", 8 ) )
283 psz_eos = strchr( psz_srvurl, ',');
285 if(!strncasecmp(psz_eos+1,"service:",8)) break;
291 psz_service = strdup( psz_srvurl);
293 msg_Dbg( p_input, "getting details for %s", psz_service );
295 slpe_result = SLPFindSrvs( slph_slp2,
297 config_GetPsz( p_input, "slp-scopelist" ),
298 config_GetPsz( p_input, "slp-filter" ),
303 psz_srvurl = psz_eos;
306 SLPClose( slph_slp2 );
308 if( slpe_result != SLP_OK )
311 "SLPFindSrvs error %i finding servers of type %s",
312 slpe_result, psz_service );
318 SLPClose( slph_slp2 );
323 /*****************************************************************************
324 * Open: initialize library for the access module
325 *****************************************************************************/
326 static int Open( vlc_object_t * p_this )
328 input_thread_t * p_input = (input_thread_t *)p_this;
329 SLPError slpe_result;
331 playlist_t * p_playlist;
332 playlist_group_t * p_group;
334 /* remove the "slp:" entry of the playlist */
335 p_playlist = (playlist_t *) vlc_object_find( p_input, VLC_OBJECT_PLAYLIST,
339 msg_Warn( p_input, "hey I can't find the main playlist, I need it" );
343 p_group = playlist_CreateGroup( p_playlist , "SLP" );
344 i_group = p_group->i_id;
345 p_playlist->pp_items[p_playlist->i_index]->b_autodeletion = VLC_TRUE;
346 vlc_object_release( (vlc_object_t *)p_playlist );
348 /* get a new handle to the library */
349 if( SLPOpen( config_GetPsz( p_input, "slp-lang" ),
350 SLP_FALSE, /* synchronous ops */
351 &slph_slp ) == SLP_OK )
353 /* search all service types */
355 SLPFindSrvTypes( slph_slp,
356 config_GetPsz( p_input, "slp-namingauthority" ),
357 config_GetPsz( p_input, "slp-scopelist" ),
360 /* we're done, clean up */
361 SLPClose( slph_slp );
364 if( !p_input->psz_demux || !*p_input->psz_demux )
366 p_input->psz_demux = "demux_slp";
369 p_input->pf_read = Read;
370 p_input->pf_set_program = NULL;
371 p_input->pf_set_area = NULL;
372 p_input->pf_seek = NULL;
374 vlc_mutex_lock( &p_input->stream.stream_lock );
375 p_input->stream.b_pace_control = VLC_FALSE;
376 p_input->stream.b_seekable = VLC_FALSE;
377 p_input->stream.p_selected_area->i_tell = 0;
378 p_input->stream.p_selected_area->i_size = 0;
379 p_input->stream.i_method = INPUT_METHOD_SLP;
380 vlc_mutex_unlock( &p_input->stream.stream_lock );
386 /*****************************************************************************
387 * Close: close access
388 *****************************************************************************/
389 static void Close( vlc_object_t * p_this )
394 /*****************************************************************************
395 * Read: should fill but zeroes the buffer
396 *****************************************************************************/
397 static ssize_t Read ( input_thread_t *p_input, byte_t *p_buffer, size_t s )
399 memset( p_buffer, 0, s );
403 /*****************************************************************************
404 * Init: initialize demux
405 *****************************************************************************/
406 static int Init ( vlc_object_t *p_this )
408 input_thread_t *p_input = (input_thread_t *)p_this;
410 if( p_input->stream.i_method != INPUT_METHOD_SLP )
415 p_input->pf_demux = Demux;
416 p_input->pf_demux_control = demux_vaControlDefault;
417 p_input->pf_rewind = NULL;
422 /*****************************************************************************
423 * Demux: should demux but does nothing
424 *****************************************************************************/
425 static int Demux ( input_thread_t * p_input )
430 /*****************************************************************************
432 *****************************************************************************/
433 static void End ( vlc_object_t *p_this )