* sap.c : SAP interface module
*****************************************************************************
* Copyright (C) 2001 VideoLAN
- * $Id: sap.c,v 1.35 2003/11/12 20:01:01 gbazin Exp $
+ * $Id: sap.c,v 1.52 2004/01/29 17:51:08 zorglub Exp $
*
* Authors: Arnaud Schauly <gitan@via.ecp.fr>
* Clément Stenac <zorglub@via.ecp.fr>
#include "network.h"
+#ifdef HAVE_ZLIB_H
+# include <zlib.h>
+#endif
+
#define MAX_LINE_LENGTH 256
/* SAP is always on that port */
#define SAP_ADDR_TEXT N_("SAP multicast address")
#define SAP_ADDR_LONGTEXT N_("SAP multicast address")
#define SAP_IPV4_TEXT N_("IPv4-SAP listening")
-#define SAP_IPV4_LONGTEXT N_("Set this if you want SAP to listen for IPv4 announces")
-#define SAP_IPV6_TEXT N_("IPv6-SAP listening")
-#define SAP_IPV6_LONGTEXT N_("Set this if you want SAP to listen for IPv6 announces")
+#define SAP_IPV4_LONGTEXT N_( \
+ "Set this if you want the SAP module to listen to IPv4 announces")
+#define SAP_IPV6_TEXT N_( "IPv6-SAP listening")
+#define SAP_IPV6_LONGTEXT N_(\
+ "Set this if you want the SAP module to listen to IPv6 announces")
#define SAP_SCOPE_TEXT N_("IPv6 SAP scope")
-#define SAP_SCOPE_LONGTEXT N_("Sets the scope for IPv6 announces (default is 8)")
+#define SAP_SCOPE_LONGTEXT N_( \
+ "Sets the scope for IPv6 announces (default is 8)")
+#define SAP_TIMEOUT_TEXT N_("SAP timeout (seconds)")
+#define SAP_TIMEOUT_LONGTEXT N_( \
+ "Sets the time before SAP items get deleted if no new announce" \
+ "is received")
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
vlc_module_begin();
- add_category_hint( N_("SAP"), NULL, VLC_TRUE );
- add_string( "sap-addr", NULL, NULL,
- SAP_ADDR_TEXT, SAP_ADDR_LONGTEXT, VLC_TRUE );
-
- add_bool( "sap-ipv4", 1 , NULL,
- SAP_IPV4_TEXT,SAP_IPV4_LONGTEXT, VLC_TRUE);
-
- add_bool( "sap-ipv6", 0 , NULL,
- SAP_IPV6_TEXT, SAP_IPV6_LONGTEXT, VLC_TRUE);
+ set_description( _("SAP interface") );
- add_string( "sap-ipv6-scope", "8" , NULL,
- SAP_SCOPE_TEXT, SAP_SCOPE_LONGTEXT, VLC_TRUE);
+ add_string( "sap-addr", NULL, NULL,
+ SAP_ADDR_TEXT, SAP_ADDR_LONGTEXT, VLC_TRUE );
+ add_bool( "sap-ipv4", 1 , NULL,
+ SAP_IPV4_TEXT,SAP_IPV4_LONGTEXT, VLC_TRUE);
+ add_bool( "sap-ipv6", 0 , NULL,
+ SAP_IPV6_TEXT, SAP_IPV6_LONGTEXT, VLC_TRUE);
+ add_string( "sap-ipv6-scope", "8" , NULL,
+ SAP_SCOPE_TEXT, SAP_SCOPE_LONGTEXT, VLC_TRUE);
+ add_integer( "sap-timeout", 1800, NULL,
+ SAP_TIMEOUT_TEXT, SAP_TIMEOUT_LONGTEXT, VLC_TRUE);
- set_description( _("SAP interface") );
set_capability( "interface", 0 );
set_callbacks( Open, Close );
vlc_module_end();
int i_version;
char *psz_sessionname;
char *psz_connection;
+ char *psz_sdp;
int i_media;
media_descr_t **pp_media;
char *psz_value;
};
+struct sap_announce_t
+{
+ mtime_t i_last;
+ int i_id;
+ char *psz_name;
+ char *psz_uri;
+};
+
struct intf_sys_t
{
/* IPV4 and IPV6 */
/* playlist group */
int i_group;
+
+ /* Table of announces */
+ int i_announces;
+ struct sap_announce_t **pp_announces;
+
+ int i_timeout;
};
+#ifdef HAVE_ZLIB_H
+int do_decompress(unsigned char *src, unsigned char **_dst, int slen) {
+ int result, dstsize, n;
+ unsigned char *dst;
+ z_stream d_stream;
+
+ d_stream.zalloc = (alloc_func)0;
+ d_stream.zfree = (free_func)0;
+ d_stream.opaque = (voidpf)0;
+ result = inflateInit(&d_stream);
+ if (result != Z_OK) {
+ printf("inflateInit() failed. Result: %d\n", result);
+ return(-1);
+ }
+
+ d_stream.next_in = (Bytef *)src;
+ d_stream.avail_in = slen;
+ n = 0;
+ dst = NULL;
+ do {
+ n++;
+ dst = (unsigned char *)realloc(dst, n * 1000);
+ d_stream.next_out = (Bytef *)&dst[(n - 1) * 1000];
+ d_stream.avail_out = 1000;
+ result = inflate(&d_stream, Z_NO_FLUSH);
+ if ((result != Z_OK) && (result != Z_STREAM_END)) {
+ printf("Zlib decompression failed. Result: %d\n", result);
+ return(-1);
+ }
+ } while ((d_stream.avail_out == 0) && (d_stream.avail_in != 0) &&
+ (result != Z_STREAM_END));
+
+ dstsize = d_stream.total_out;
+ inflateEnd(&d_stream);
+
+ *_dst = (unsigned char *)realloc(dst, dstsize);
+
+ return dstsize;
+}
+#endif
+
/*****************************************************************************
* Open: initialize and create stuff
*****************************************************************************/
playlist_t *p_playlist;
+ p_sys->i_timeout = config_GetInt(p_intf,"sap-timeout");
p_sys->fd[0] = -1;
p_sys->fd[1] = -1;
if( config_GetInt( p_intf, "sap-ipv4" ) )
{
psz_scope = strdup( "8" );
}
- snprintf( psz_address, 100, "[%s%c%s]",IPV6_ADDR_1, psz_scope[0], IPV6_ADDR_2 );
+ snprintf( psz_address, 100, "[%s%c%s]",IPV6_ADDR_1,
+ psz_scope[0], IPV6_ADDR_2 );
free( psz_scope );
sock.i_type = NETWORK_UDP;
vlc_object_release( p_playlist );
}
+ p_sys->i_announces = 0;
+ p_sys->pp_announces = NULL;
+
p_intf->pf_run = Run;
p_intf->p_sys = p_sys;
{
intf_thread_t *p_intf = (intf_thread_t*)p_this;
intf_sys_t *p_sys = p_intf->p_sys;
+ int i;
if( p_sys->fd[0] > 0 )
{
close( p_sys->fd[1] );
}
+ for( i = 0 ; i< p_sys->i_announces ; i++ )
+ {
+ if( p_sys->pp_announces[i]->psz_name )
+ free( p_sys->pp_announces[i]->psz_name );
+ if( p_sys->pp_announces[i]->psz_uri )
+ free( p_sys->pp_announces[i]->psz_uri );
+ free( p_sys->pp_announces[i] );
+ }
+
free( p_sys );
}
*****************************************************************************
* Listens to SAP packets, and sends them to packet_handle
*****************************************************************************/
-#define MAX_SAP_BUFFER 2000
+#define MAX_SAP_BUFFER 5000
static void Run( intf_thread_t *p_intf )
{
intf_sys_t *p_sys = p_intf->p_sys;
uint8_t buffer[MAX_SAP_BUFFER + 1];
+ uint8_t *p_end;
/* read SAP packets */
while( !p_intf->b_die )
{
+ playlist_t *p_playlist= NULL;
+ int i;
int i_read = NetRead( p_intf, p_sys->fd, buffer, MAX_SAP_BUFFER );
uint8_t *p_sdp;
+ int i_version;
+ int i_address_type;
+ int b_reserved;
+ int b_message_type;
+ int b_encrypted;
+ int b_compressed;
+ unsigned char *p_decompressed_buffer;
+ int i_decompressed_size;
+
+ /* Check for items that need deletion */
+ for( i = 0 ; i< p_intf->p_sys->i_announces ; i++ )
+ {
+ struct sap_announce_t *p_announce;
+ mtime_t i_timeout = (mtime_t)1000000*p_sys->i_timeout;
+ if( mdate() - p_intf->p_sys->pp_announces[i]->i_last > i_timeout )
+ {
+ msg_Dbg(p_intf,"Time out for %s, deleting (%i/%i)",
+ p_intf->p_sys->pp_announces[i]->psz_name,
+ i , p_intf->p_sys->i_announces );
+
+ /* Remove the playlist item */
+ p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
+ FIND_ANYWHERE );
+ if( p_playlist )
+ {
+ int i_pos = playlist_GetPositionById( p_playlist,
+ p_intf->p_sys->pp_announces[i]->i_id );
+ playlist_Delete( p_playlist, i_pos );
+ }
+
+ vlc_object_release( p_playlist );
+
+ /* Free the p_announce */
+ p_announce = p_intf->p_sys->pp_announces[i];
+ if( p_announce->psz_name )
+ free( p_announce->psz_name );
+ if( p_announce->psz_uri )
+ free( p_announce->psz_uri );
+
+ /* Remove the sap_announce from the array */
+ REMOVE_ELEM( p_intf->p_sys->pp_announces,
+ p_intf->p_sys->i_announces,
+ i );
+
+ free( p_announce );
+
+ }
+ }
/* Minimum length is > 6 */
if( i_read <= 6 )
}
buffer[i_read] = '\0';
+ p_end = &buffer[i_read];
/* Parse the SAP header */
+ i_version = buffer[0] >> 5;
+ if( i_version != 1 )
+ {
+ msg_Warn( p_intf, "strange sap version %d found", i_version );
+ }
+ i_address_type = buffer[0] & 0x10;
+ b_reserved = buffer[0] & 0x08;
+ if( b_reserved != 0 )
+ {
+ msg_Warn( p_intf, "reserved bit incorrectly set" );
+ }
+ b_message_type = buffer[0] & 0x04;
+ if( b_message_type != 0 )
+ {
+ msg_Warn( p_intf, "got session deletion packet" );
+ }
+ b_encrypted = buffer[0] & 0x02;
+ if( b_encrypted )
+ {
+ msg_Warn( p_intf, "encrypted packet" );
+ }
+ b_compressed = buffer[0] & 0x01;
p_sdp = &buffer[4];
- p_sdp += (buffer[0]&0x10) ? 16 : 4;
- p_sdp += buffer[1];
-
- while( p_sdp < &buffer[i_read-1] && *p_sdp != '\0' && p_sdp[0] != 'v' && p_sdp[1] != '=' )
+ if( i_address_type == 0 ) /* ipv4 source address */
+ {
+ p_sdp += 4;
+ }
+ else /* ipv6 source address */
+ {
+ p_sdp += 16;
+ }
+ if( b_compressed )
+ {
+#ifdef HAVE_ZLIB_H
+ i_decompressed_size = do_decompress( p_sdp, &p_decompressed_buffer, i_read - ( p_sdp - buffer ) );
+ if( i_decompressed_size > 0 && i_decompressed_size < MAX_SAP_BUFFER )
+ {
+ memcpy( p_sdp, p_decompressed_buffer, i_decompressed_size );
+ p_sdp[i_decompressed_size] = '\0';
+ p_end = &p_sdp[i_decompressed_size];
+ free( p_decompressed_buffer );
+ }
+#else
+ msg_Warn( p_intf, "Ignoring compressed sap packet" );
+#endif
+ }
+ p_sdp += buffer[1]; /* size of signature */
+ while( p_sdp < p_end - 1 && *p_sdp != '\0' && p_sdp[0] != 'v' && p_sdp[1] != '=' )
{
p_sdp++;
}
{
p_sdp++;
}
- if( p_sdp < &buffer[i_read] )
+
+ if( p_sdp < p_end )
{
sess_descr_t *p_sd = parse_sdp( p_intf, p_sdp );
if( p_sd )
free_sd ( p_sd );
}
}
+ else
+ {
+ msg_Warn( p_intf, "ditching sap packet" );
+ }
+
}
}
static void sess_toitem( intf_thread_t * p_intf, sess_descr_t * p_sd )
{
- playlist_item_t * p_item;
- char *psz_uri, *psz_proto;
+ struct sap_announce_t *p_announce;
+ char *psz_uri, *psz_proto, *psz_item_uri;
char *psz_port;
char *psz_uri_default;
- int i_count , i;
+ int i_count , i , i_pos , i_id = 0;
vlc_bool_t b_http = VLC_FALSE;
char *psz_http_path = NULL;
playlist_t *p_playlist = NULL;
+ playlist_item_t *p_item;
psz_uri_default = NULL;
+ if( p_sd->i_media > 1 )
+ {
+ asprintf( &psz_uri, "sdp://%s", p_sd->psz_sdp );
+ /* Check if we have already added the item */
+ for( i = 0 ; i< p_intf->p_sys->i_announces ; i++ )
+ {
+ if( !strcmp(p_intf->p_sys->pp_announces[i]->psz_uri,
+ psz_uri ) )
+ {
+ p_intf->p_sys->pp_announces[i]->i_last = mdate();
+ free(psz_uri);
+ return;
+ }
+ }
+ /* Add it to the playlist */
+ p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
+ FIND_ANYWHERE );
+ i_id = playlist_Add( p_playlist, psz_uri, p_sd->psz_sessionname ,
+ PLAYLIST_CHECK_INSERT, PLAYLIST_END );
+ if( i_id != -1 )
+ {
+ playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_id );
+ playlist_ItemSetGroup( p_item, p_intf->p_sys->i_group );
+ }
+
+ /* Remember it */
+ p_announce = (struct sap_announce_t *)malloc(
+ sizeof(struct sap_announce_t) );
+ if( p_sd->psz_sessionname )
+ {
+ p_announce->psz_name = strdup( p_sd->psz_sessionname );
+ }
+ else
+ {
+ p_announce->psz_name = strdup( "" );
+ }
+ if( psz_uri )
+ {
+ p_announce->psz_uri = strdup( psz_uri );
+ }
+ else
+ {
+ p_announce->psz_uri = strdup( "" );
+ }
+ p_announce->i_id = i_id;
+ p_announce->i_last = mdate();
+
+ INSERT_ELEM( p_intf->p_sys->pp_announces,
+ p_intf->p_sys->i_announces,
+ p_intf->p_sys->i_announces,
+ p_announce );
+
+ vlc_object_release( p_playlist );
+ free( psz_uri );
+ return;
+ }
+
cfield_parse( p_sd->psz_connection, &psz_uri_default );
for( i_count = 0 ; i_count < p_sd->i_media ; i_count++ )
{
- p_item = malloc( sizeof( playlist_item_t ) );
- p_item->psz_name = strdup( p_sd->psz_sessionname );
- p_item->psz_uri = NULL;
- p_item->i_duration = -1;
- p_item->ppsz_options= NULL;
- p_item->i_options = 0;
+ int i_group = p_intf->p_sys->i_group;
- p_item->i_type = 0;
- p_item->i_status = 0;
- p_item->b_autodeletion = VLC_FALSE;
- p_item->b_enabled = VLC_TRUE;
- p_item->i_group = p_intf->p_sys->i_group;
- p_item->psz_author = strdup( "" );
-
- psz_uri = NULL;
-
- /* Build what we have to put in p_item->psz_uri, with the m and
- * c fields */
+ /* Build what we have to put in psz_item_uri, with the m and
+ * c fields */
if( !p_sd->pp_media[i_count] )
{
}
if(!strcasecmp( p_sd->pp_attributes[i]->psz_field , "plgroup"))
{
- int i_id;
+ int i_group_id;
p_playlist =
(playlist_t *)vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
FIND_ANYWHERE );
return;
}
- i_id = playlist_GroupToId( p_playlist,
- p_sd->pp_attributes[i]->psz_value);
- if( i_id != 0 )
+ i_group_id = playlist_GroupToId( p_playlist,
+ p_sd->pp_attributes[i]->psz_value);
+ if( i_group_id != 0 )
{
- p_item->i_group = i_id;
+ i_group = i_group_id;
}
else
{
playlist_group_t *p_group =
playlist_CreateGroup( p_playlist,
p_sd->pp_attributes[i]->psz_value);
- p_item->i_group = p_group->i_id;
+ i_group = p_group->i_id;
}
vlc_object_release( p_playlist );
}
}
-
- /* Filling p_item->psz_uri */
+ /* Filling psz_uri */
if( b_http == VLC_FALSE )
{
- p_item->psz_uri = malloc( strlen( psz_proto ) + strlen( psz_uri ) +
- strlen( psz_port ) + 7 );
+ psz_item_uri = malloc( strlen( psz_proto ) + strlen( psz_uri ) +
+ strlen( psz_port ) + 7 );
if( ismult( psz_uri ) )
{
- sprintf( p_item->psz_uri, "%s://@%s:%s",
+ sprintf( psz_item_uri, "%s://@%s:%s",
psz_proto, psz_uri, psz_port );
}
else
{
- sprintf( p_item->psz_uri, "%s://%s:%s",
+ sprintf( psz_item_uri, "%s://%s:%s",
psz_proto, psz_uri, psz_port );
}
}
psz_http_path = strdup( "/" );
}
- p_item->psz_uri = malloc( strlen( psz_proto ) + strlen( psz_uri ) +
- strlen( psz_port ) + strlen(psz_http_path) + 5 );
- sprintf( p_item->psz_uri, "%s://%s:%s%s", psz_proto,
+ psz_item_uri = malloc( strlen( psz_proto ) + strlen( psz_uri ) +
+ strlen( psz_port ) + strlen(psz_http_path) +
+ 5 );
+ sprintf( psz_item_uri, "%s://%s:%s%s", psz_proto,
psz_uri, psz_port,psz_http_path );
if( psz_http_path )
}
}
- /* Enqueueing p_item in the playlist */
- p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
- playlist_AddItem ( p_playlist, p_item, PLAYLIST_CHECK_INSERT, PLAYLIST_END );
+ /* Check if we already know this item */
+ for( i = 0 ; i< p_intf->p_sys->i_announces ; i++ )
+ {
+ if( !strcmp( p_intf->p_sys->pp_announces[i]->psz_uri,
+ psz_item_uri ) )
+ {
+ p_intf->p_sys->pp_announces[i]->i_last = mdate();
+
+ /* Check if the name changed */
+ if( strcmp( p_intf->p_sys->pp_announces[i]->psz_name,
+ p_sd->psz_sessionname ) )
+ {
+ playlist_item_t *p_item;
+ p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
+ FIND_ANYWHERE );
+
+ msg_Dbg(p_intf, "Name changed (%s -> %s) for %s",
+ p_intf->p_sys->pp_announces[i]->psz_name,
+ p_sd->psz_sessionname,
+ psz_item_uri );
+
+ p_item = playlist_ItemGetById( p_playlist,
+ p_intf->p_sys->pp_announces[i]->i_id );
+
+ /* Change the name in the item */
+ if( p_item->psz_name )
+ free( p_item->psz_name );
+ p_item->psz_name = strdup( p_sd->psz_sessionname);
+
+ /* Update the stored name */
+ if( p_intf->p_sys->pp_announces[i]->psz_name )
+ free( p_intf->p_sys->pp_announces[i]->psz_name );
+ p_intf->p_sys->pp_announces[i]->psz_name =
+ strdup( p_sd->psz_sessionname );
+
+ vlc_object_release( p_playlist );
+ }
+ return;
+ }
+ }
+
+ /* Add the item in the playlist */
+ p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
+ FIND_ANYWHERE );
+ i_id = playlist_Add ( p_playlist, psz_item_uri ,
+ p_sd->psz_sessionname,
+ PLAYLIST_CHECK_INSERT, PLAYLIST_END );
+ p_item = playlist_ItemGetById( p_playlist, i_id );
+ if( p_item )
+ {
+ vlc_mutex_lock( &p_item->lock );
+ playlist_ItemSetGroup( p_item, i_group );
+ vlc_mutex_unlock( &p_item->lock );
+ }
+
+ /* Then remember it */
+ p_announce = (struct sap_announce_t *)malloc(
+ sizeof(struct sap_announce_t) );
+ if( p_sd->psz_sessionname )
+ {
+ p_announce->psz_name = strdup( p_sd->psz_sessionname );
+ }
+ else
+ {
+ p_announce->psz_name = strdup( "" );
+ }
+ if( psz_item_uri )
+ {
+ p_announce->psz_uri = strdup( psz_item_uri );
+ }
+ else
+ {
+ p_announce->psz_uri = strdup( "" );
+ }
+ p_announce->i_id = i_id;
+
+ p_announce->i_last = mdate();
+
vlc_object_release( p_playlist );
+
+ INSERT_ELEM( p_intf->p_sys->pp_announces,
+ p_intf->p_sys->i_announces,
+ p_intf->p_sys->i_announces,
+ p_announce );
+ free( psz_item_uri );
}
}
sd = malloc( sizeof( sess_descr_t ) );
sd->psz_sessionname = NULL;
sd->psz_connection = NULL;
+ sd->psz_sdp = strdup( p_packet );
+
sd->i_media = 0;
sd->pp_media = NULL;
sd->i_attributes = 0;
FREE( p_sd->psz_sessionname );
FREE( p_sd->psz_connection );
+ FREE( p_sd->psz_sdp );
for( i = 0; i < p_sd->i_media ; i++ )
{
FREE( p_sd->pp_media[i]->psz_medianame );
FREE( p_sd->pp_media[i]->psz_mediaconnection );
+ FREE( p_sd->pp_media[i] );
}
for( i = 0; i < p_sd->i_attributes ; i++ )
{
FREE( p_sd->pp_attributes[i]->psz_field );
FREE( p_sd->pp_attributes[i]->psz_value );
+ FREE( p_sd->pp_attributes[i] );
}
FREE( p_sd->pp_attributes );
FREE( p_sd->pp_media );
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