1 /*****************************************************************************
2 * sap.c : SAP interface module
3 *****************************************************************************
4 * Copyright (C) 2004-2005 VideoLAN
7 * Authors: Clément Stenac <zorglub@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(), free() */
32 #include <vlc/input.h>
37 #include <errno.h> /* ENOMEM */
42 #ifdef HAVE_SYS_TIME_H
43 # include <sys/time.h>
50 /************************************************************************
51 * Macros and definitions
52 ************************************************************************/
54 #define MAX_LINE_LENGTH 256
56 /* SAP is always on that port */
58 /* Global-scope SAP address */
59 #define SAP_V4_GLOBAL_ADDRESS "224.2.127.254"
60 /* Organization-local SAP address */
61 #define SAP_V4_ORG_ADDRESS "239.195.255.255"
62 /* Local (smallest non-link-local scope) SAP address */
63 #define SAP_V4_LOCAL_ADDRESS "239.255.255.255"
64 /* Link-local SAP address */
65 #define SAP_V4_LINK_ADDRESS "224.0.0.255"
68 #define IPV6_ADDR_1 "FF0" /* Scope is inserted between them */
69 #define IPV6_ADDR_2 "::2:7FFE"
72 /*****************************************************************************
74 *****************************************************************************/
75 #define SAP_ADDR_TEXT N_( "SAP multicast address" )
76 #define SAP_ADDR_LONGTEXT N_( "Listen for SAP announces on another address" )
77 #define SAP_IPV4_TEXT N_( "IPv4-SAP listening" )
78 #define SAP_IPV4_LONGTEXT N_( \
79 "Set this if you want the SAP module to listen to IPv4 announces " \
80 "on the standard address" )
81 #define SAP_IPV6_TEXT N_( "IPv6-SAP listening" )
82 #define SAP_IPV6_LONGTEXT N_( \
83 "Set this if you want the SAP module to listen to IPv6 announces " \
84 "on the standard address" )
85 #define SAP_SCOPE_TEXT N_( "IPv6 SAP scope" )
86 #define SAP_SCOPE_LONGTEXT N_( \
87 "Sets the scope for IPv6 announces (default is 8)" )
88 #define SAP_TIMEOUT_TEXT N_( "SAP timeout (seconds)" )
89 #define SAP_TIMEOUT_LONGTEXT N_( \
90 "Sets the time before SAP items get deleted if no new announce " \
92 #define SAP_PARSE_TEXT N_( "Try to parse the SAP" )
93 #define SAP_PARSE_LONGTEXT N_( \
94 "When SAP can it will try to parse the SAP. If you don't select " \
95 "this, all announces will be parsed by the livedotcom module" )
96 #define SAP_STRICT_TEXT N_( "SAP Strict mode" )
97 #define SAP_STRICT_LONGTEXT N_( \
98 "When this is set, the SAP parser will discard some non-compliant " \
100 #define SAP_CACHE_TEXT N_("Use SAP cache")
101 #define SAP_CACHE_LONGTEXT N_( \
102 "If this option is selected, a SAP caching mechanism will be used." \
103 "This will result in lower SAP startup time, but you could end up " \
104 "with items corresponding to legacy streams." )
107 static int Open ( vlc_object_t * );
108 static void Close( vlc_object_t * );
109 static int OpenDemux ( vlc_object_t * );
110 static void CloseDemux ( vlc_object_t * );
113 set_shortname( _("SAP"));
114 set_description( _("SAP announces") );
115 set_category( CAT_PLAYLIST );
116 set_subcategory( SUBCAT_PLAYLIST_SD );
118 add_string( "sap-addr", NULL, NULL,
119 SAP_ADDR_TEXT, SAP_ADDR_LONGTEXT, VLC_TRUE );
120 add_bool( "sap-ipv4", 1 , NULL,
121 SAP_IPV4_TEXT,SAP_IPV4_LONGTEXT, VLC_TRUE );
122 add_bool( "sap-ipv6", 0 , NULL,
123 SAP_IPV6_TEXT, SAP_IPV6_LONGTEXT, VLC_TRUE );
124 add_string( "sap-ipv6-scope", "8" , NULL,
125 SAP_SCOPE_TEXT, SAP_SCOPE_LONGTEXT, VLC_TRUE);
126 add_integer( "sap-timeout", 1800, NULL,
127 SAP_TIMEOUT_TEXT, SAP_TIMEOUT_LONGTEXT, VLC_TRUE );
128 add_bool( "sap-parse", 1 , NULL,
129 SAP_PARSE_TEXT,SAP_PARSE_LONGTEXT, VLC_TRUE );
130 add_bool( "sap-strict", 0 , NULL,
131 SAP_STRICT_TEXT,SAP_STRICT_LONGTEXT, VLC_TRUE );
132 add_bool( "sap-cache", 0 , NULL,
133 SAP_CACHE_TEXT,SAP_CACHE_LONGTEXT, VLC_TRUE );
135 set_capability( "services_discovery", 0 );
136 set_callbacks( Open, Close );
139 set_description( _("SDP file parser for UDP") );
140 add_shortcut( "sdp" );
141 set_capability( "demux2", 51 );
142 set_callbacks( OpenDemux, CloseDemux );
146 /*****************************************************************************
148 *****************************************************************************/
150 typedef struct sdp_t sdp_t;
151 typedef struct attribute_t attribute_t;
152 typedef struct sap_announce_t sap_announce_t;
154 /* The structure that contains sdp information */
160 char *psz_sessionname;
162 /* Raw m= and c= fields */
163 char *psz_connection;
168 char *psz_network_type;
169 char *psz_address_type;
171 int64_t i_session_id;
176 int i_in; /* IP version */
182 attribute_t **pp_attributes;
191 struct sap_announce_t
196 uint32_t i_source[4];
198 /* SAP annnounces must only contain one SDP */
202 // playlist_item_t *p_item;
205 struct services_discovery_sys_t
207 /* Socket descriptors */
212 playlist_item_t *p_node;
214 /* charset conversion */
215 vlc_iconv_t iconvHandle;
217 /* Table of announces */
219 struct sap_announce_t **pp_announces;
233 /*****************************************************************************
235 *****************************************************************************/
239 static int Demux( demux_t *p_demux );
240 static int Control( demux_t *, int, va_list );
241 static void Run ( services_discovery_t *p_sd );
243 /* Main parsing functions */
244 static int ParseConnection( vlc_object_t *p_obj, sdp_t *p_sdp );
245 static int ParseSAP( services_discovery_t *p_sd, uint8_t *p_buffer, int i_read );
246 static sdp_t * ParseSDP( vlc_object_t *p_sd, char* psz_sdp );
247 static sap_announce_t *CreateAnnounce( services_discovery_t *, uint16_t, sdp_t * );
248 static int RemoveAnnounce( services_discovery_t *p_sd, sap_announce_t *p_announce );
251 static void CacheLoad( services_discovery_t *p_sd );
252 static void CacheSave( services_discovery_t *p_sd );
253 /* Helper functions */
254 static char *GetAttribute( sdp_t *p_sdp, const char *psz_search );
255 static vlc_bool_t IsSameSession( sdp_t *p_sdp1, sdp_t *p_sdp2 );
256 static char *convert_from_utf8( struct services_discovery_t *p_sd,
258 static int InitSocket( services_discovery_t *p_sd, char *psz_address, int i_port );
260 static int Decompress( unsigned char *psz_src, unsigned char **_dst, int i_len );
262 static void FreeSDP( sdp_t *p_sdp );
264 /* Detect multicast addresses */
265 static int ismult( char * );
268 if( p ) { free( p ); (p) = NULL; }
269 /*****************************************************************************
270 * Open: initialize and create stuff
271 *****************************************************************************/
272 static int Open( vlc_object_t *p_this )
274 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
275 services_discovery_sys_t *p_sys = (services_discovery_sys_t *)
276 malloc( sizeof( services_discovery_sys_t ) );
278 playlist_t *p_playlist;
279 playlist_view_t *p_view;
280 char *psz_addr, *psz_charset;
283 p_sys->i_timeout = var_CreateGetInteger( p_sd, "sap-timeout" );
285 vlc_current_charset( &psz_charset );
286 p_sys->iconvHandle = vlc_iconv_open( psz_charset, "UTF-8" );
288 if( p_sys->iconvHandle == (vlc_iconv_t)(-1) )
290 msg_Err( p_sd, "unable to perform characters conversion" );
300 p_sys->b_strict = var_CreateGetInteger( p_sd, "sap-strict");
301 p_sys->b_parse = var_CreateGetInteger( p_sd, "sap-parse" );
303 if( var_CreateGetInteger( p_sd, "sap-cache" ) )
308 if( var_CreateGetInteger( p_sd, "sap-ipv4" ) )
310 InitSocket( p_sd, SAP_V4_GLOBAL_ADDRESS, SAP_PORT );
311 InitSocket( p_sd, SAP_V4_ORG_ADDRESS, SAP_PORT );
312 InitSocket( p_sd, SAP_V4_LOCAL_ADDRESS, SAP_PORT );
313 InitSocket( p_sd, SAP_V4_LINK_ADDRESS, SAP_PORT );
315 if( var_CreateGetInteger( p_sd, "sap-ipv6" ) )
317 /* [ + 8x4+7*':' + ] */
318 char psz_address[42];
320 char *psz_scope = var_CreateGetString( p_sd, "sap-ipv6-scope" );
322 if( psz_scope == NULL || *psz_scope == '\0')
328 c_scope = psz_scope[0];
330 snprintf( psz_address, 42, "[%s%c%s]", IPV6_ADDR_1, c_scope,
332 InitSocket( p_sd, psz_address, SAP_PORT );
335 psz_addr = var_CreateGetString( p_sd, "sap-addr" );
336 if( psz_addr && *psz_addr )
338 InitSocket( p_sd, psz_addr, SAP_PORT );
341 if( p_sys->i_fd == 0 )
343 msg_Err( p_sd, "unable to read on any address" );
347 /* Create our playlist node */
348 p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
352 msg_Warn( p_sd, "unable to find playlist, cancelling SAP listening");
356 p_view = playlist_ViewFind( p_playlist, VIEW_CATEGORY );
357 p_sys->p_node = playlist_NodeCreate( p_playlist, VIEW_CATEGORY,
358 _("SAP"), p_view->p_root );
359 p_sys->p_node->i_flags |= PLAYLIST_RO_FLAG;
360 p_sys->p_node->i_flags =~ PLAYLIST_SKIP_FLAG;
361 val.b_bool = VLC_TRUE;
362 var_Set( p_playlist, "intf-change", val );
364 vlc_object_release( p_playlist );
366 p_sys->i_announces = 0;
367 p_sys->pp_announces = NULL;
372 /*****************************************************************************
373 * OpenDemux: initialize and create stuff
374 *****************************************************************************/
375 static int OpenDemux( vlc_object_t *p_this )
377 demux_t *p_demux = (demux_t *)p_this;
379 int i_max_sdp = 1024;
381 char *psz_sdp = NULL;
387 if( stream_Peek( p_demux->s, &p_peek, 7 ) < 7 ) return VLC_EGENERIC;
389 if( strncmp( (char*)p_peek, "v=0\r\n", 5 ) &&
390 strncmp( (char*)p_peek, "v=0\n", 4 ) &&
391 ( p_peek[0] < 'a' || p_peek[0] > 'z' || p_peek[1] != '=' ) )
397 psz_sdp = (char *)malloc( i_max_sdp );
398 if( !psz_sdp ) return VLC_EGENERIC;
400 /* Gather the complete sdp file */
403 int i_read = stream_Read( p_demux->s,
404 &psz_sdp[i_sdp], i_max_sdp - i_sdp - 1 );
408 msg_Err( p_demux, "failed to read SDP" );
414 if( i_read < i_max_sdp - i_sdp - 1 )
416 psz_sdp[i_sdp] = '\0';
421 psz_sdp = (uint8_t*)realloc( psz_sdp, i_max_sdp );
424 p_sdp = ParseSDP( VLC_OBJECT(p_demux), psz_sdp );
428 msg_Warn( p_demux, "invalid SDP");
432 if( p_sdp->i_media > 1 )
437 if( ParseConnection( VLC_OBJECT( p_demux ), p_sdp ) )
439 p_sdp->psz_uri = NULL;
441 if( p_sdp->i_media_type != 33 && p_sdp->i_media_type != 32 &&
442 p_sdp->i_media_type != 14 )
445 if( p_sdp->psz_uri == NULL ) goto error;
447 p_demux->p_sys = (demux_sys_t *)malloc( sizeof(demux_sys_t) );
448 p_demux->p_sys->p_sdp = p_sdp;
449 p_demux->pf_control = Control;
450 p_demux->pf_demux = Demux;
457 if( p_sdp ) FreeSDP( p_sdp );
458 stream_Seek( p_demux->s, 0 );
462 /*****************************************************************************
464 *****************************************************************************/
465 static void Close( vlc_object_t *p_this )
467 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
468 services_discovery_sys_t *p_sys = p_sd->p_sys;
470 playlist_t *p_playlist;
473 for( i = p_sys->i_fd-1 ; i >= 0 ; i-- )
475 net_Close( p_sys->pi_fd[i] );
477 FREE( p_sys->pi_fd );
479 if( config_GetInt( p_sd, "sap-cache" ) )
484 for( i = p_sys->i_announces - 1; i>= 0; i-- )
486 RemoveAnnounce( p_sd, p_sys->pp_announces[i] );
488 FREE( p_sys->pp_announces );
490 p_playlist = (playlist_t *) vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
495 playlist_NodeDelete( p_playlist, p_sys->p_node, VLC_TRUE , VLC_TRUE );
496 vlc_object_release( p_playlist );
499 vlc_iconv_close( p_sys->iconvHandle );
504 /*****************************************************************************
505 * CloseDemux: Close the demuxer
506 *****************************************************************************/
507 static void CloseDemux( vlc_object_t *p_this )
512 /*****************************************************************************
513 * Run: main SAP thread
514 *****************************************************************************
515 * Listens to SAP packets, and sends them to packet_handle
516 *****************************************************************************/
517 #define MAX_SAP_BUFFER 5000
519 static void Run( services_discovery_t *p_sd )
522 playlist_t *p_playlist;
524 /* read SAP packets */
525 while( !p_sd->b_die )
528 uint8_t p_buffer[MAX_SAP_BUFFER];
530 i_read = net_Select( p_sd, p_sd->p_sys->pi_fd, NULL,
531 p_sd->p_sys->i_fd, p_buffer,
532 MAX_SAP_BUFFER, 500000 );
534 /* Check for items that need deletion */
535 for( i = 0; i < p_sd->p_sys->i_announces; i++ )
537 mtime_t i_timeout = ( mtime_t ) 1000000 * p_sd->p_sys->i_timeout;
539 if( mdate() - p_sd->p_sys->pp_announces[i]->i_last > i_timeout )
541 struct sap_announce_t *p_announce;
542 playlist_item_t * p_item;
543 p_announce = p_sd->p_sys->pp_announces[i];
545 /* Remove the playlist item */
546 p_playlist = vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
550 p_item = playlist_ItemGetById( p_playlist,
551 p_announce->i_item_id );
552 if( !p_item ) continue;
554 msg_Dbg( p_sd, "Time out for %s, deleting (%i/%i)",
555 p_item->input.psz_name,
556 i , p_sd->p_sys->i_announces );
558 playlist_Delete( p_playlist, p_announce->i_item_id );
559 vlc_object_release( p_playlist );
562 /* Remove the sap_announce from the array */
563 REMOVE_ELEM( p_sd->p_sys->pp_announces,
564 p_sd->p_sys->i_announces, i );
570 /* Minimum length is > 6 */
575 msg_Warn( p_sd, "socket read error" );
580 p_buffer[i_read] = '\0';
582 /* Parse the packet */
583 ParseSAP( p_sd, p_buffer, i_read );
587 /**********************************************************************
588 * Demux: reads and demuxes data packets
589 * Return -1 if error, 0 if EOF, 1 else
590 **********************************************************************/
591 static int Demux( demux_t *p_demux )
593 sdp_t *p_sdp = p_demux->p_sys->p_sdp;
594 playlist_t *p_playlist;
596 p_playlist = (playlist_t *)vlc_object_find( p_demux, VLC_OBJECT_PLAYLIST,
599 p_playlist->status.p_item->i_flags |= PLAYLIST_DEL_FLAG;
601 playlist_Add( p_playlist, p_sdp->psz_uri, p_sdp->psz_sessionname,
602 PLAYLIST_APPEND, PLAYLIST_END );
604 vlc_object_release( p_playlist );
605 if( p_sdp ) FreeSDP( p_sdp );
610 static int Control( demux_t *p_demux, int i_query, va_list args )
615 /**************************************************************
617 **************************************************************/
619 /* i_read is at least > 6 */
620 static int ParseSAP( services_discovery_t *p_sd, uint8_t *p_buffer, int i_read )
622 int i_version, i_address_type, i_hash, i;
624 uint8_t *psz_initial_sdp;
626 vlc_bool_t b_compressed;
627 vlc_bool_t b_need_delete = VLC_FALSE;
629 int i_decompressed_size;
630 uint8_t *p_decompressed_buffer;
634 /* First, check the sap announce is correct */
635 i_version = p_buffer[0] >> 5;
638 msg_Dbg( p_sd, "strange sap version %d found", i_version );
641 i_address_type = p_buffer[0] & 0x10;
643 if( (p_buffer[0] & 0x08) != 0 )
645 msg_Dbg( p_sd, "reserved bit incorrectly set" );
649 if( (p_buffer[0] & 0x04) != 0 )
651 msg_Dbg( p_sd, "session deletion packet" );
652 b_need_delete = VLC_TRUE;
655 if( p_buffer[0] & 0x02 )
657 msg_Dbg( p_sd, "encrypted packet, unsupported" );
661 b_compressed = p_buffer[0] & 0x01;
663 i_hash = ( p_buffer[2] << 8 ) + p_buffer[3];
665 if( p_sd->p_sys->b_strict && i_hash == 0 )
667 msg_Dbg( p_sd, "strict mode, discarding announce with null id hash");
671 psz_sdp = &p_buffer[4];
672 psz_initial_sdp = psz_sdp;
674 if( i_address_type == 0 ) /* ipv4 source address */
679 msg_Warn( p_sd, "too short SAP packet\n" );
683 else /* ipv6 source address */
688 msg_Warn( p_sd, "too short SAP packet\n" );
696 i_decompressed_size = Decompress( psz_sdp,
697 &p_decompressed_buffer,i_read - ( psz_sdp - p_buffer ) );
698 if( i_decompressed_size > 0 && i_decompressed_size < MAX_SAP_BUFFER )
700 memcpy( psz_sdp, p_decompressed_buffer, i_decompressed_size );
701 psz_sdp[i_decompressed_size] = '\0';
702 free( p_decompressed_buffer );
705 msg_Warn( p_sd, "Ignoring compressed sap packet" );
710 /* Add the size of authentification info */
711 if( i_read < p_buffer[1] + (psz_sdp - psz_initial_sdp ) )
713 msg_Warn( p_sd, "too short SAP packet\n");
716 psz_sdp += p_buffer[1];
719 /* Skip payload type */
720 /* Handle announces without \0 between SAP and SDP */
721 while( *psz_sdp != '\0' && ( psz_sdp[0] != 'v' && psz_sdp[1] != '=' ) )
723 if( psz_sdp - psz_initial_sdp >= i_read - 5 )
725 msg_Warn( p_sd, "empty SDP ?");
730 if( *psz_sdp == '\0' )
734 if( psz_sdp != psz_foo && strcasecmp( psz_foo, "application/sdp" ) )
736 msg_Dbg( p_sd, "unhandled content type: %s", psz_foo );
738 if( psz_sdp -p_buffer >= i_read )
740 msg_Warn( p_sd, "package without content" );
745 p_sdp = ParseSDP( VLC_OBJECT(p_sd), psz_sdp );
752 /* Decide whether we should add a playlist item for this SDP */
753 /* Parse connection information (c= & m= ) */
754 if( ParseConnection( VLC_OBJECT(p_sd), p_sdp ) )
756 p_sdp->psz_uri = NULL;
759 /* Multi-media or no-parse -> pass to LIVE.COM */
760 if( p_sdp->i_media > 1 || ( p_sdp->i_media_type != 14 &&
761 p_sdp->i_media_type != 32 &&
762 p_sdp->i_media_type != 33) ||
763 p_sd->p_sys->b_parse == VLC_FALSE )
765 if( p_sdp->psz_uri ) free( p_sdp->psz_uri );
766 asprintf( &p_sdp->psz_uri, "sdp://%s", p_sdp->psz_sdp );
769 if( p_sdp->psz_uri == NULL ) return VLC_EGENERIC;
771 for( i = 0 ; i< p_sd->p_sys->i_announces ; i++ )
774 /* FIXME: we create a new announce each time the sdp changes */
775 if( IsSameSession( p_sd->p_sys->pp_announces[i]->p_sdp, p_sdp ) )
779 RemoveAnnounce( p_sd, p_sd->p_sys->pp_announces[i]);
784 p_sd->p_sys->pp_announces[i]->i_last = mdate();
791 if( p_sdp->i_media > 1 )
793 msg_Dbg( p_sd, "passing to LIVE.COM" );
796 CreateAnnounce( p_sd, i_hash, p_sdp );
801 sap_announce_t *CreateAnnounce( services_discovery_t *p_sd, uint16_t i_hash,
804 playlist_t *p_playlist;
805 playlist_item_t *p_item, *p_child;
807 sap_announce_t *p_sap = (sap_announce_t *)malloc(
808 sizeof(sap_announce_t ) );
810 psz_value = convert_from_utf8( p_sd, p_sdp->psz_sessionname );
811 if( p_sap == NULL || psz_value == NULL )
817 p_sap->i_last = mdate();
818 p_sap->i_hash = i_hash;
819 p_sap->p_sdp = p_sdp;
820 p_sap->i_item_id = -1;
822 /* Create the playlist item here */
823 p_item = playlist_ItemNew( p_sd, p_sap->p_sdp->psz_uri, psz_value );
832 psz_value = GetAttribute( p_sap->p_sdp, "tool" );
833 if( psz_value != NULL )
835 vlc_input_item_AddInfo( &p_item->input, _("Session"),
836 _("Tool"), psz_value );
838 if( strcmp( p_sdp->psz_username, "-" ) )
840 vlc_input_item_AddInfo( &p_item->input, _("Session"),
841 _("User"), p_sdp->psz_username );
844 psz_value = GetAttribute( p_sap->p_sdp, "x-plgroup" );
846 if( psz_value == NULL )
848 psz_value = GetAttribute( p_sap->p_sdp, "plgroup" );
851 p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
855 msg_Err( p_sd, "playlist not found" );
860 if( psz_value != NULL )
862 char *psz_grp = convert_from_utf8( p_sd, psz_value );
864 if( psz_grp != NULL )
866 p_child = playlist_ChildSearchName( p_sd->p_sys->p_node,
869 if( p_child == NULL )
871 p_child = playlist_NodeCreate( p_playlist, VIEW_CATEGORY,
872 psz_grp, p_sd->p_sys->p_node );
873 p_child->i_flags =~ PLAYLIST_SKIP_FLAG;
879 vlc_object_release( p_playlist );
880 msg_Err( p_sd, "out of memory");
887 p_child = p_sd->p_sys->p_node;
890 p_item->i_flags &= ~PLAYLIST_SKIP_FLAG;
891 p_item->i_flags &= ~PLAYLIST_SAVE_FLAG;
893 playlist_NodeAddItem( p_playlist, p_item, VIEW_CATEGORY, p_child,
894 PLAYLIST_APPEND, PLAYLIST_END );
896 vlc_object_release( p_playlist );
898 p_sap->i_item_id = p_item->input.i_id;
900 TAB_APPEND( p_sd->p_sys->i_announces,
901 p_sd->p_sys->pp_announces, p_sap );
906 static char *GetAttribute( sdp_t *p_sdp, const char *psz_search )
910 for( i = 0 ; i< p_sdp->i_attributes; i++ )
912 if( !strncmp( p_sdp->pp_attributes[i]->psz_field, psz_search,
913 strlen( p_sdp->pp_attributes[i]->psz_field ) ) )
915 return p_sdp->pp_attributes[i]->psz_value;
922 /* Fill p_sdp->psz_uri */
923 static int ParseConnection( vlc_object_t *p_obj, sdp_t *p_sdp )
927 char *psz_uri = NULL;
928 char *psz_proto = NULL;
932 if( p_sdp->psz_connection )
934 psz_parse = p_sdp->psz_connection;
936 psz_eof = strchr( psz_parse, ' ' );
941 psz_parse = psz_eof + 1;
945 msg_Warn( p_obj, "unable to parse c field (1)");
949 psz_eof = strchr( psz_parse, ' ' );
954 if( !strncmp( psz_parse, "IP4", 3 ) )
958 else if( !strncmp( psz_parse, "IP6", 3 ) )
966 psz_parse = psz_eof + 1;
970 msg_Warn( p_obj, "unable to parse c field (2)");
974 psz_eof = strchr( psz_parse, '/' );
982 msg_Dbg( p_obj, "incorrect c field, %s", p_sdp->psz_connection );
984 psz_uri = strdup( psz_parse );
989 if( p_sdp->psz_media )
991 psz_parse = p_sdp->psz_media;
993 psz_eof = strchr( psz_parse, ' ' );
999 if( strncmp( psz_parse, "audio", 5 ) &&
1000 strncmp( psz_parse, "video",5 ) )
1002 msg_Warn( p_obj, "unhandled media type -%s-", psz_parse );
1004 return VLC_EGENERIC;
1007 psz_parse = psz_eof + 1;
1011 msg_Warn( p_obj, "unable to parse m field (1)");
1013 return VLC_EGENERIC;
1016 psz_eof = strchr( psz_parse, ' ' );
1022 /* FIXME : multiple port ! */
1023 i_port = atoi( psz_parse );
1025 if( i_port <= 0 || i_port >= 65536 )
1027 msg_Warn( p_obj, "invalid transport port %i", i_port );
1030 psz_parse = psz_eof + 1;
1034 msg_Warn( p_obj, "unable to parse m field (2)");
1036 return VLC_EGENERIC;
1039 psz_eof = strchr( psz_parse, ' ' );
1044 psz_proto = strdup( psz_parse );
1046 psz_parse = psz_eof + 1;
1047 p_sdp->i_media_type = atoi( psz_parse );
1052 msg_Dbg( p_obj, "incorrect m field, %s", p_sdp->psz_media );
1053 p_sdp->i_media_type = 33;
1054 psz_proto = strdup( psz_parse );
1058 if( psz_proto && !strncmp( psz_proto, "RTP/AVP", 7 ) )
1061 psz_proto = strdup( "rtp" );
1063 if( psz_proto && !strncasecmp( psz_proto, "UDP", 3 ) )
1066 psz_proto = strdup( "udp" );
1069 /* FIXME: HTTP support */
1076 if( ismult( psz_uri ) )
1078 asprintf( &p_sdp->psz_uri, "%s://@%s:%i", psz_proto, psz_uri, i_port );
1082 asprintf( &p_sdp->psz_uri, "%s://%s:%i", psz_proto, psz_uri, i_port );
1089 /***********************************************************************
1090 * ParseSDP : SDP parsing
1091 * *********************************************************************
1092 * Validate SDP and parse all fields
1093 ***********************************************************************/
1094 static sdp_t * ParseSDP( vlc_object_t *p_obj, char* psz_sdp )
1097 vlc_bool_t b_invalid = VLC_FALSE;
1098 vlc_bool_t b_end = VLC_FALSE;
1099 if( psz_sdp == NULL )
1104 if( psz_sdp[0] != 'v' || psz_sdp[1] != '=' )
1106 msg_Warn( p_obj, "Bad packet" );
1110 p_sdp = (sdp_t *)malloc( sizeof( sdp_t ) );
1112 p_sdp->psz_sdp = strdup( psz_sdp );
1114 p_sdp->psz_sessionname = NULL;
1115 p_sdp->psz_media = NULL;
1116 p_sdp->psz_connection = NULL;
1117 p_sdp->psz_uri = NULL;
1118 p_sdp->psz_address = NULL;
1119 p_sdp->psz_address_type= NULL;
1122 p_sdp->i_attributes = 0;
1123 p_sdp->pp_attributes = NULL;
1125 while( *psz_sdp != '\0' && b_end == VLC_FALSE )
1132 while( *psz_sdp == '\r' || *psz_sdp == '\n' ||
1133 *psz_sdp == ' ' || *psz_sdp == '\t' )
1138 if( ( psz_eol = strchr( psz_sdp, '\n' ) ) == NULL )
1140 psz_eol = psz_sdp + strlen( psz_sdp );
1143 if( psz_eol > psz_sdp && *( psz_eol - 1 ) == '\r' )
1148 if( psz_eol <= psz_sdp )
1154 /* no space allowed between fields */
1155 if( psz_sdp[1] != '=' )
1157 msg_Warn( p_obj, "invalid packet" ) ;
1162 /* Now parse each line */
1163 switch( psz_sdp[0] )
1168 p_sdp->psz_sessionname = strdup( &psz_sdp[2] );
1173 /* o field is <username> <session id> <version>
1174 * <network type> <address type> <address> */
1176 #define GET_FIELD( store ) \
1177 psz_eof = strchr( psz_parse, ' ' ); \
1180 *psz_eof=0; store = strdup( psz_parse ); \
1184 if( i_field != 5 ) \
1186 b_invalid = VLC_TRUE; break; \
1190 store = strdup( psz_parse ); \
1193 psz_parse = psz_eof + 1; i_field++;
1196 psz_parse = &psz_sdp[2];
1197 GET_FIELD( p_sdp->psz_username );
1198 GET_FIELD( psz_sess_id );
1200 p_sdp->i_session_id = atoll( psz_sess_id );
1202 FREE( psz_sess_id );
1204 GET_FIELD( psz_sess_id );
1205 FREE( psz_sess_id );
1207 GET_FIELD( p_sdp->psz_network_type );
1208 GET_FIELD( p_sdp->psz_address_type );
1209 GET_FIELD( p_sdp->psz_address );
1220 case( 'a' ): /* attribute */
1222 char *psz_eon = strchr( &psz_sdp[2], ':' );
1223 attribute_t *p_attr = malloc( sizeof( attribute_t ) );
1225 /* Attribute with value */
1230 p_attr->psz_field = strdup( &psz_sdp[2] );
1231 p_attr->psz_value = strdup( psz_eon );
1233 else /* Attribute without value */
1235 p_attr->psz_field = strdup( &psz_sdp[2] );
1236 p_attr->psz_value = NULL;
1239 TAB_APPEND( p_sdp->i_attributes, p_sdp->pp_attributes, p_attr );
1243 case( 'm' ): /* Media announcement */
1245 /* If we have several medias, we pass the announcement to
1246 * LIVE.COM, so just count them */
1248 if( p_sdp->i_media == 1 )
1250 p_sdp->psz_media = strdup( &psz_sdp[2] );
1257 if( p_sdp->i_media > 1 )
1260 p_sdp->psz_connection = strdup( &psz_sdp[2] );
1281 static char *convert_from_utf8( struct services_discovery_t *p_sd,
1284 char *psz_local, *psz_in, *psz_out;
1285 size_t ret, i_in, i_out;
1287 if( psz_unicode == NULL )
1290 psz_in = psz_unicode;
1291 i_in = strlen( psz_unicode );
1296 i_out = MB_CUR_MAX * i_in;
1298 psz_local = malloc( i_out + 1 );
1299 if( psz_local == NULL )
1301 psz_out = psz_local;
1305 ret = vlc_iconv( p_sd->p_sys->iconvHandle,
1306 &psz_in, &i_in, &psz_out, &i_out);
1310 msg_Warn( p_sd, "after \"%s\" : %s", strerror( errno ),
1315 if( ret == (size_t)(-1) )
1317 msg_Err( p_sd, "character conversion failure : %s",
1318 strerror( errno ) );
1329 /***********************************************************************
1330 * ismult: returns true if we have a multicast address
1331 ***********************************************************************/
1332 static int ismult( char *psz_uri )
1337 i_value = strtol( psz_uri, &psz_end, 0 );
1340 if( psz_uri[0] == '[')
1342 if( strncasecmp( &psz_uri[1], "FF0" , 3) ||
1343 strncasecmp( &psz_uri[2], "FF0" , 3))
1346 return( VLC_FALSE );
1349 if( *psz_end != '.' ) { return( VLC_FALSE ); }
1351 return( i_value < 224 ? VLC_FALSE : VLC_TRUE );
1354 static int InitSocket( services_discovery_t *p_sd, char *psz_address,
1357 int i_fd = net_OpenUDP( p_sd, psz_address, i_port, "", 0 );
1361 INSERT_ELEM( p_sd->p_sys->pi_fd, p_sd->p_sys->i_fd,
1362 p_sd->p_sys->i_fd, i_fd );
1366 return VLC_EGENERIC;
1370 static int Decompress( unsigned char *psz_src, unsigned char **_dst, int i_len )
1372 int i_result, i_dstsize, n;
1373 unsigned char *psz_dst;
1376 d_stream.zalloc = (alloc_func)0;
1377 d_stream.zfree = (free_func)0;
1378 d_stream.opaque = (voidpf)0;
1380 i_result = inflateInit(&d_stream);
1381 if( i_result != Z_OK )
1383 printf( "inflateInit() failed. Result: %d\n", i_result );
1387 p_playlist->pp_items[p_playlist->i_index]->b_autodeletion = VLC_TRUE;
1388 i_position = p_playlist->i_index;
1390 /* Gather the complete sdp file */
1393 int i_read = stream_Read( p_demux->s, &p_sdp[i_sdp], i_sdp_max - i_sdp - 1 );
1395 d_stream.next_in = (Bytef *)psz_src;
1396 d_stream.avail_in = i_len;
1404 psz_dst = (unsigned char *)realloc( psz_dst, n * 1000 );
1405 d_stream.next_out = (Bytef *)&psz_dst[(n - 1) * 1000];
1406 d_stream.avail_out = 1000;
1408 i_result = inflate(&d_stream, Z_NO_FLUSH);
1409 if( ( i_result != Z_OK ) && ( i_result != Z_STREAM_END ) )
1411 printf( "Zlib decompression failed. Result: %d\n", i_result );
1415 while( ( d_stream.avail_out == 0 ) && ( d_stream.avail_in != 0 ) &&
1416 ( i_result != Z_STREAM_END ) );
1418 i_dstsize = d_stream.total_out;
1419 inflateEnd( &d_stream );
1421 *_dst = (unsigned char *)realloc( psz_dst, i_dstsize );
1428 static void FreeSDP( sdp_t *p_sdp )
1431 FREE( p_sdp->psz_sdp );
1432 FREE( p_sdp->psz_sessionname );
1433 FREE( p_sdp->psz_connection );
1434 FREE( p_sdp->psz_media );
1435 FREE( p_sdp->psz_uri );
1436 FREE( p_sdp->psz_username );
1437 FREE( p_sdp->psz_network_type );
1439 FREE( p_sdp->psz_address );
1440 FREE( p_sdp->psz_address_type );
1442 for( i= p_sdp->i_attributes - 1; i >= 0 ; i-- )
1444 struct attribute_t *p_attr = p_sdp->pp_attributes[i];
1445 FREE( p_sdp->pp_attributes[i]->psz_field );
1446 FREE( p_sdp->pp_attributes[i]->psz_value );
1447 REMOVE_ELEM( p_sdp->pp_attributes, p_sdp->i_attributes, i);
1453 static int RemoveAnnounce( services_discovery_t *p_sd,
1454 sap_announce_t *p_announce )
1457 playlist_t *p_playlist = (playlist_t *)vlc_object_find( p_sd,
1458 VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
1460 if( p_announce->p_sdp ) FreeSDP( p_announce->p_sdp );
1465 return VLC_EGENERIC;
1468 if( p_announce->i_item_id > -1 )
1470 playlist_LockDelete( p_playlist, p_announce->i_item_id );
1473 for( i = 0; i< p_sd->p_sys->i_announces; i++)
1475 if( p_sd->p_sys->pp_announces[i] == p_announce )
1477 REMOVE_ELEM( p_sd->p_sys->pp_announces, p_sd->p_sys->i_announces,
1483 vlc_object_release( p_playlist );
1490 static vlc_bool_t IsSameSession( sdp_t *p_sdp1, sdp_t *p_sdp2 )
1492 /* A session is identified by
1493 * username, session_id, network type, address type and address */
1494 if( p_sdp1->psz_username && p_sdp2->psz_username &&
1495 p_sdp1->psz_network_type && p_sdp2->psz_network_type &&
1496 p_sdp1->psz_address_type && p_sdp2->psz_address_type &&
1497 p_sdp1->psz_address && p_sdp2->psz_address )
1499 if(!strcmp( p_sdp1->psz_username , p_sdp2->psz_username ) &&
1500 !strcmp( p_sdp1->psz_network_type , p_sdp2->psz_network_type ) &&
1501 !strcmp( p_sdp1->psz_address_type , p_sdp2->psz_address_type ) &&
1502 !strcmp( p_sdp1->psz_address , p_sdp2->psz_address ) &&
1503 p_sdp1->i_session_id == p_sdp2->i_session_id )
1519 static void CacheLoad( services_discovery_t *p_sd )
1521 msg_Warn( p_sd, "Cache not implemented") ;
1524 static void CacheSave( services_discovery_t *p_sd )
1526 msg_Warn( p_sd, "Cache not implemented") ;