/*****************************************************************************
* sap.c : SAP announce handler
*****************************************************************************
- * Copyright (C) 2002-2005 the VideoLAN team
+ * Copyright (C) 2002-2007 the VideoLAN team
* $Id$
*
* Authors: Clément Stenac <zorglub@videolan.org>
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
+
+#include <vlc/vlc.h>
+
#include <stdlib.h> /* free() */
#include <stdio.h> /* sprintf() */
#include <string.h> /* strerror() */
#include <ctype.h> /* tolower(), isxdigit() */
-#include <vlc/vlc.h>
-#include <vlc/sout.h>
-
-#include "network.h"
-#if defined( WIN32 ) || defined( UNDER_CE )
-# if defined(UNDER_CE) && defined(sockaddr_storage)
-# undef sockaddr_storage
-# endif
-# include <winsock2.h>
-# include <ws2tcpip.h>
-#else
-# include <netdb.h>
-# ifdef HAVE_ARPA_INET_H
-# include <arpa/inet.h>
-# endif
-#endif
-#include "charset.h"
+#include <vlc_sout.h>
+#include <vlc_network.h>
+#include <vlc_charset.h>
+
+#include "stream_output.h"
/* SAP is always on that port */
#define SAP_PORT 9875
struct sap_address_t
{
char *psz_address;
- char psz_machine[NI_MAXNUMERICHOST];
- int i_port;
+ struct sockaddr_storage orig;
+ socklen_t origlen;
int i_rfd; /* Read socket */
int i_wfd; /* Write socket */
int i_limit;
};
+/* A SAP session descriptor, enqueued in the SAP handler queue */
+struct sap_session_t {
+ uint8_t *psz_data;
+ unsigned i_length;
+ sap_address_t *p_address;
+ session_descriptor_t *p_sd;
+
+ /* Last and next send */
+ mtime_t i_last;
+ mtime_t i_next;
+};
+
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static void RunThread( vlc_object_t *p_this);
-static int CalculateRate( sap_handler_t *p_sap, sap_address_t *p_address );
+static int ComputeRate( sap_address_t *p_address );
static char *SDPGenerate( sap_handler_t *p_sap,
const session_descriptor_t *p_session,
- const sap_address_t *p_addr );
+ vlc_bool_t b_ssm );
static int announce_SendSAPAnnounce( sap_handler_t *p_sap,
sap_session_t *p_session );
static int announce_SAPAnnounceDel( sap_handler_t *p_sap,
session_descriptor_t *p_session );
-#define FREE( p ) if( p ) { free( p ); (p) = NULL; }
-
/**
* Create the SAP handler
if( vlc_thread_create( p_sap, "sap handler", RunThread,
VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
{
- msg_Dbg( p_announce, "Unable to spawn SAP handler thread");
+ msg_Dbg( p_announce, "unable to spawn SAP handler thread");
free( p_sap );
return NULL;
};
for( i = 0 ; i< p_sap->i_sessions ; i++)
{
sap_session_t *p_session = p_sap->pp_sessions[i];
- FREE( p_session->psz_sdp );
- FREE( p_session->psz_data );
+ FREENULL( p_session->psz_data );
REMOVE_ELEM( p_sap->pp_sessions, p_sap->i_sessions , i );
- FREE( p_session );
+ FREENULL( p_session );
}
/* Free the remaining addresses */
for( i = 0 ; i< p_sap->i_addresses ; i++)
{
sap_address_t *p_address = p_sap->pp_addresses[i];
- FREE( p_address->psz_address );
+ FREENULL( p_address->psz_address );
if( p_address->i_rfd > -1 )
{
net_Close( p_address->i_rfd );
net_Close( p_address->i_wfd );
}
REMOVE_ELEM( p_sap->pp_addresses, p_sap->i_addresses, i );
- FREE( p_address );
+ FREENULL( p_address );
}
/* Free the structure */
{
if( p_sap->pp_addresses[i]->b_enabled == VLC_TRUE )
{
- CalculateRate( p_sap, p_sap->pp_addresses[i] );
+ ComputeRate( p_sap->pp_addresses[i] );
}
}
}
static int announce_SAPAnnounceAdd( sap_handler_t *p_sap,
session_descriptor_t *p_session )
{
- int i_header_size, i;
- char *psz_head, psz_addr[NI_MAXNUMERICHOST];
- vlc_bool_t b_ipv6 = VLC_FALSE;
+ int i;
+ char psz_addr[NI_MAXNUMERICHOST];
+ vlc_bool_t b_ipv6 = VLC_FALSE, b_ssm = VLC_FALSE;
sap_session_t *p_sap_session;
mtime_t i_hash;
- struct addrinfo hints, *res;
struct sockaddr_storage addr;
+ socklen_t addrlen;
vlc_mutex_lock( &p_sap->object_lock );
-
- if( p_session->psz_uri == NULL )
+ addrlen = p_session->addrlen;
+ if ((addrlen == 0) || (addrlen > sizeof (addr)))
{
vlc_mutex_unlock( &p_sap->object_lock );
- msg_Err( p_sap, "*FIXME* Unexpected NULL URI for SAP announce" );
- msg_Err( p_sap, "This should not happen. VLC needs fixing." );
+ msg_Err( p_sap, "No/invalid address specified for SAP announce" );
return VLC_EGENERIC;
}
/* Determine SAP multicast address automatically */
- memset( &hints, 0, sizeof( hints ) );
- hints.ai_socktype = SOCK_DGRAM;
- hints.ai_flags = AI_NUMERICHOST;
+ memcpy (&addr, &p_session->addr, addrlen);
- i = vlc_getaddrinfo( (vlc_object_t *)p_sap, p_session->psz_uri, 0,
- &hints, &res );
- if( i )
- {
- vlc_mutex_unlock( &p_sap->object_lock );
- msg_Err( p_sap, "Invalid URI for SAP announce: %s: %s",
- p_session->psz_uri, vlc_gai_strerror( i ) );
- return VLC_EGENERIC;
- }
-
- if( (unsigned)res->ai_addrlen > sizeof( addr ) )
- {
- vlc_mutex_unlock( &p_sap->object_lock );
- vlc_freeaddrinfo( res );
- msg_Err( p_sap, "Unsupported address family of size %d > %u",
- res->ai_addrlen, sizeof( addr ) );
- return VLC_EGENERIC;
- }
-
- memcpy( &addr, res->ai_addr, res->ai_addrlen );
-
- switch( addr.ss_family )
+ switch( p_session->addr.ss_family )
{
#if defined (HAVE_INET_PTON) || defined (WIN32)
case AF_INET6:
memcpy( a6->s6_addr + 2, "\x00\x00\x00\x00\x00\x00"
"\x00\x00\x00\x00\x00\x02\x7f\xfe", 14 );
if( IN6_IS_ADDR_MULTICAST( a6 ) )
- /* force flags to zero, preserve scope */
+ {
+ /* SSM <=> ff3x::/32 */
+ b_ssm = (U32_AT (a6->s6_addr) & 0xfff0ffff) == 0xff300000;
+
+ /* force flags to zero, preserve scope */
a6->s6_addr[1] &= 0xf;
+ }
else
/* Unicast IPv6 - assume global scope */
memcpy( a6->s6_addr, "\xff\x0e", 2 );
if ((ipv4 & 0xfffc0000) == 0xefc00000)
ipv4 = 0xefc3ffff;
else
+ if ((ipv4 & 0xff000000) == 0xef000000)
+ ipv4 = 0;
+ else
/* other addresses => 224.2.127.254 */
+ {
+ /* SSM: 232.0.0.0/8 */
+ b_ssm = (ipv4 >> 24) == 232;
ipv4 = 0xe0027ffe;
+ }
+
+ if( ipv4 == 0 )
+ {
+ msg_Err( p_sap, "Out-of-scope multicast address "
+ "not supported by SAP" );
+ vlc_mutex_unlock( &p_sap->object_lock );
+ return VLC_EGENERIC;
+ }
+
+ ((struct sockaddr_in *)&addr)->sin_addr.s_addr = htonl( ipv4 );
break;
}
-
+
default:
vlc_mutex_unlock( &p_sap->object_lock );
- vlc_freeaddrinfo( res );
msg_Err( p_sap, "Address family %d not supported by SAP",
addr.ss_family );
return VLC_EGENERIC;
}
- i = vlc_getnameinfo( (struct sockaddr *)&addr, res->ai_addrlen,
+ i = vlc_getnameinfo( (struct sockaddr *)&addr, addrlen,
psz_addr, sizeof( psz_addr ), NULL, NI_NUMERICHOST );
- vlc_freeaddrinfo( res );
if( i )
{
/* XXX: Check for dupes */
p_sap_session = (sap_session_t*)malloc(sizeof(sap_session_t));
+ p_sap_session->p_sd = p_session;
p_sap_session->p_address = NULL;
/* Add the address to the buffer */
malloc( sizeof(sap_address_t) );
if( !p_address )
{
- msg_Err( p_sap, "out of memory" );
+ vlc_mutex_unlock( &p_sap->object_lock );
return VLC_ENOMEM;
}
p_address->psz_address = strdup( psz_addr );
- p_address->i_port = 9875;
- p_address->i_wfd = net_OpenUDP( p_sap, "", 0, psz_addr,
- p_address->i_port );
+ p_address->i_wfd = net_ConnectUDP( VLC_OBJECT(p_sap), psz_addr, SAP_PORT, 255 );
if( p_address->i_wfd != -1 )
{
- char *ptr;
-
- net_StopRecv( p_address->i_wfd );
- net_GetSockAddress( p_address->i_wfd, p_address->psz_machine,
- NULL );
-
- /* removes scope if present */
- ptr = strchr( p_address->psz_machine, '%' );
- if( ptr != NULL )
- *ptr = '\0';
+ shutdown( p_address->i_wfd, SHUT_RD );
+ p_address->origlen = sizeof (p_address->orig);
+ getsockname (p_address->i_wfd, (struct sockaddr *)&p_address->orig,
+ &p_address->origlen);
}
if( p_sap->b_control == VLC_TRUE )
{
- p_address->i_rfd = net_OpenUDP( p_sap, psz_addr,
- p_address->i_port, "", 0 );
+ p_address->i_rfd = net_ListenUDP1( (vlc_object_t*)p_sap, psz_addr, SAP_PORT );
if( p_address->i_rfd != -1 )
- net_StopSend( p_address->i_rfd );
+ shutdown( p_address->i_rfd, SHUT_WR );
p_address->i_buff = 0;
p_address->b_enabled = VLC_TRUE;
p_address->b_ready = VLC_FALSE;
p_sap_session->p_address = p_address;
}
+ if (p_session->origlen == 0)
+ memcpy (&p_session->orig, &p_sap_session->p_address->orig,
+ p_session->origlen = p_sap_session->p_address->origlen);
- /* Build the SAP Headers */
- i_header_size = ( b_ipv6 ? 16 : 4 ) + 20;
- psz_head = (char *) malloc( i_header_size * sizeof( char ) );
- if( psz_head == NULL )
- {
- msg_Err( p_sap, "out of memory" );
- return VLC_ENOMEM;
- }
-
- /* SAPv1, not encrypted, not compressed */
- psz_head[0] = b_ipv6 ? 0x30 : 0x20;
- psz_head[1] = 0x00; /* No authentification length */
-
- i_hash = mdate();
- psz_head[2] = (i_hash & 0xFF00) >> 8; /* Msg id hash */
- psz_head[3] = (i_hash & 0xFF); /* Msg id hash 2 */
-
-#if defined (HAVE_INET_PTON) || defined (WIN32)
- if( b_ipv6 )
+ size_t headsize = 20;
+ switch (p_session->orig.ss_family)
{
- inet_pton( AF_INET6, /* can't fail */
- p_sap_session->p_address->psz_machine,
- psz_head + 4 );
- }
- else
-#else
- {
- inet_pton( AF_INET, /* can't fail */
- p_sap_session->p_address->psz_machine,
- psz_head + 4 );
- }
+#ifdef AF_INET6
+ case AF_INET6:
+ headsize += 16;
+ break;
#endif
-
- memcpy( psz_head + (b_ipv6 ? 20 : 8), "application/sdp", 15 );
+ case AF_INET:
+ headsize += 4;
+ break;
+ default:
+ msg_Err( p_sap, "Address family %d not supported by SAP",
+ addr.ss_family );
+ vlc_mutex_unlock( &p_sap->object_lock );
+ return VLC_EGENERIC;
+ }
/* If needed, build the SDP */
if( p_session->psz_sdp == NULL )
{
- p_session->psz_sdp = SDPGenerate( p_sap, p_session,
- p_sap_session->p_address );
+ p_session->psz_sdp = SDPGenerate( p_sap, p_session, b_ssm );
if( p_session->psz_sdp == NULL )
{
vlc_mutex_unlock( &p_sap->object_lock );
}
}
- p_sap_session->psz_sdp = strdup( p_session->psz_sdp );
p_sap_session->i_last = 0;
+ p_sap_session->i_length = headsize + strlen (p_session->psz_sdp);
+ p_sap_session->psz_data = malloc (p_sap_session->i_length + 1);
+ if (p_sap_session->psz_data == NULL)
+ {
+ free (p_session->psz_sdp);
+ vlc_mutex_unlock( &p_sap->object_lock );
+ return VLC_ENOMEM;
+ }
- psz_head[ i_header_size-1 ] = '\0';
- p_sap_session->i_length = i_header_size + strlen( p_sap_session->psz_sdp);
+ /* Build the SAP Headers */
+ uint8_t *psz_head = p_sap_session->psz_data;
- p_sap_session->psz_data = (uint8_t *)malloc( sizeof(char)*
- p_sap_session->i_length );
+ /* SAPv1, not encrypted, not compressed */
+ psz_head[0] = 0x20;
+ psz_head[1] = 0x00; /* No authentification length */
- /* Build the final message */
- memcpy( p_sap_session->psz_data, psz_head, i_header_size );
- memcpy( p_sap_session->psz_data+i_header_size, p_sap_session->psz_sdp,
- strlen( p_sap_session->psz_sdp) );
+ i_hash = mdate();
+ psz_head[2] = i_hash >> 8; /* Msg id hash */
+ psz_head[3] = i_hash; /* Msg id hash 2 */
- free( psz_head );
+ headsize = 4;
+ switch (p_session->orig.ss_family)
+ {
+#ifdef AF_INET6
+ case AF_INET6:
+ {
+ struct in6_addr *a6 =
+ &((struct sockaddr_in6 *)&p_session->orig)->sin6_addr;
+ memcpy (psz_head + headsize, a6, 16);
+ psz_head[0] |= 0x10; /* IPv6 flag */
+ headsize += 16;
+ break;
+ }
+#endif
+ case AF_INET:
+ {
+ uint32_t ipv4 =
+ (((struct sockaddr_in *)&p_session->orig)->sin_addr.s_addr);
+ memcpy (psz_head + headsize, &ipv4, 4);
+ headsize += 4;
+ break;
+ }
+
+ }
+
+ memcpy (psz_head + headsize, "application/sdp", 16);
+ headsize += 16;
+
+ /* Build the final message */
+ strcpy( (char *)psz_head + headsize, p_session->psz_sdp);
/* Enqueue the announce */
INSERT_ELEM( p_sap->pp_sessions,
p_sap->i_sessions,
p_sap->i_sessions,
p_sap_session );
- msg_Dbg( p_sap,"Addresses: %i Sessions: %i",
+ msg_Dbg( p_sap,"%i addresses, %i sessions",
p_sap->i_addresses,p_sap->i_sessions);
- /* Remember the SAP session for later deletion */
- p_session->p_sap = p_sap_session;
-
vlc_mutex_unlock( &p_sap->object_lock );
return VLC_SUCCESS;
int i;
vlc_mutex_lock( &p_sap->object_lock );
- msg_Dbg( p_sap,"removing SAP announce %p",p_session->p_sap);
+ msg_Dbg( p_sap, "removing session %p from SAP", p_session);
/* Dequeue the announce */
for( i = 0; i< p_sap->i_sessions; i++)
{
- if( p_session->p_sap == p_sap->pp_sessions[i] )
+ if( p_session == p_sap->pp_sessions[i]->p_sd )
{
+ sap_session_t *p_mysession = p_sap->pp_sessions[i];
REMOVE_ELEM( p_sap->pp_sessions,
p_sap->i_sessions,
i );
- FREE( p_session->p_sap->psz_sdp );
- FREE( p_session->p_sap->psz_data );
- free( p_session->p_sap );
+ free( p_mysession->psz_data );
+ free( p_mysession );
break;
}
}
* TODO: - address refcount
- send a SAP deletion packet */
- msg_Dbg( p_sap,"%i announces remaining", p_sap->i_sessions );
+ msg_Dbg( p_sap,"%i announcements remaining", p_sap->i_sessions );
vlc_mutex_unlock( &p_sap->object_lock );
if( p_session->i_next < mdate() )
{
#ifdef EXTRA_DEBUG
- msg_Dbg( p_sap, "Sending announce");
+ msg_Dbg( p_sap, "sending announce");
#endif
i_ret = net_Write( p_sap, p_session->p_address->i_wfd, NULL,
p_session->psz_data,
if( i_ret != (int)p_session->i_length )
{
msg_Warn( p_sap, "SAP send failed on address %s (%i %i)",
- p_session->p_address->psz_address,
- i_ret, p_session->i_length );
+ p_session->p_address->psz_address,
+ i_ret, p_session->i_length );
}
p_session->i_last = p_session->i_next;
p_session->i_next = p_session->i_last
static char *SDPGenerate( sap_handler_t *p_sap,
const session_descriptor_t *p_session,
- const sap_address_t *p_addr )
+ vlc_bool_t b_ssm )
{
- int64_t i_sdp_id = mdate();
- int i_sdp_version = 1 + p_sap->i_sessions + (rand()&0xfff);
- char *psz_group, *psz_name, psz_uribuf[NI_MAXNUMERICHOST], *psz_uri,
- *psz_sdp;
- char ipv;
+ char *psz_group, *psz_name, *psz_sdp;
+
+ char *head = StartSDP (p_session->psz_name, p_session->description,
+ p_session->url, p_session->email, p_session->phone, b_ssm,
+ (const struct sockaddr *)&p_session->orig, p_session->origlen,
+ (const struct sockaddr *)&p_session->addr, p_session->addrlen);
+ if (head == NULL)
+ return NULL;
psz_group = p_session->psz_group;
psz_name = p_session->psz_name;
- /* FIXME: really check that psz_uri is a real IP address
- * FIXME: make a common function to obtain a canonical IP address */
- ipv = ( strchr( p_session->psz_uri, ':' ) != NULL) ? '6' : '4';
- if( *p_session->psz_uri == '[' )
- {
- char *ptr;
-
- strncpy( psz_uribuf, p_session->psz_uri + 1, sizeof( psz_uribuf ) );
- psz_uribuf[sizeof( psz_uribuf ) - 1] = '\0';
- ptr = strchr( psz_uribuf, '%' );
- if( ptr != NULL)
- *ptr = '\0';
- ptr = strchr( psz_uribuf, ']' );
- if( ptr != NULL)
- *ptr = '\0';
- psz_uri = psz_uribuf;
- }
- else
- psz_uri = p_session->psz_uri;
-
- /* see the lists in modules/stream_out/rtp.c for compliance stuff */
- if( asprintf( &psz_sdp,
- "v=0\r\n"
- "o=- "I64Fd" %d IN IP%c %s\r\n"
- "s=%s\r\n"
- "t=0 0\r\n"
- "c=IN IP%c %s/%d\r\n"
- "m=video %d udp %d\r\n"
- "a=tool:"PACKAGE_STRING"\r\n"
- "a=type:broadcast\r\n"
- "%s%s%s",
- i_sdp_id, i_sdp_version,
- ipv, p_addr->psz_machine,
- psz_name, ipv,
- psz_uri, p_session->i_ttl,
- p_session->i_port, p_session->i_payload,
- psz_group ? "a=x-plgroup:" : "",
- psz_group ? psz_group : "", psz_group ? "\r\n" : "" ) == -1 )
+ char *plgroup;
+ if ((psz_group == NULL)
+ || (asprintf (&plgroup, "a=x-plgroup:%s\r\n", psz_group) == -1))
+ plgroup = NULL;
+
+ const char *comedia = NULL;
+ if (!strncasecmp (p_session->sdpformat, "DCCP", 4)
+ || !strncasecmp (p_session->sdpformat, "TCP", 3))
+ comedia = "a=setup:passive\r\n"
+ "a=connection:new\r\n";
+
+ int res = asprintf (&psz_sdp, "%s" "%s" "%s"
+ "m=video %d %s\r\n",
+ head,
+ plgroup ?: "",
+ comedia ?: "",
+ ntohs (net_GetPort ((const struct sockaddr *)&p_session->addr)),
+ p_session->sdpformat);
+ free (plgroup);
+
+ if (res == -1)
return NULL;
-
+
msg_Dbg( p_sap, "Generated SDP (%i bytes):\n%s", strlen(psz_sdp),
psz_sdp );
return psz_sdp;
}
-static int CalculateRate( sap_handler_t *p_sap, sap_address_t *p_address )
+static int ComputeRate( sap_address_t *p_address )
{
- int i_read;
uint8_t buffer[SAP_MAX_BUFFER];
- int i_tot = 0;
+ ssize_t i_tot = 0;
mtime_t i_temp;
int i_rate;
p_address->t1 = mdate();
return VLC_SUCCESS;
}
- do
+ for (;;)
{
/* Might be too slow if we have huge data */
- i_read = net_ReadNonBlock( p_sap, p_address->i_rfd, NULL, buffer,
- SAP_MAX_BUFFER, 0 );
+ ssize_t i_read = recv( p_address->i_rfd, buffer, SAP_MAX_BUFFER, 0 );
+ if (i_read == -1)
+ break;
i_tot += i_read;
- } while( i_read > 0 && i_tot < SAP_MAX_BUFFER );
+ }
i_temp = mdate();
p_address->i_interval = MAX_INTERVAL;
}
#ifdef EXTRA_DEBUG
- msg_Dbg( p_sap,"%s:%i : Rate=%i, Interval = %i s",
- p_address->psz_address,p_address->i_port,
- i_rate,
- p_address->i_interval );
+ msg_Dbg( p_sap,"%s:%i: rate=%i, interval = %i s",
+ p_address->psz_address,SAP_PORT, i_rate, p_address->i_interval );
#endif
p_address->b_ready = VLC_TRUE;
projects / vlc / blobdiff