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gst/rtsp/rtsptransport.*: Add validation to rtsp_transport_parse().
Original commit message from CVS: Patch by: Peter Kjellerstedt <pkj at axis com> * gst/rtsp/rtsptransport.c: (rtsp_transport_init), (parse_mode), (parse_range), (range_as_text), (rtsp_transport_mode_as_text), (rtsp_transport_profile_as_text), (rtsp_transport_ltrans_as_text), (rtsp_transport_parse), (rtsp_transport_as_text): * gst/rtsp/rtsptransport.h: Add validation to rtsp_transport_parse(). Add rtsp_transport_as_text() to generate an RTSP header from an RTSPTransport. Change ssrc to guint (was a string) since that is what it is, even though it is sent as a hex string. Correctly identify PLAY|RECORD mode parameters (the syntax in the RFC is incorrect, which can be seen when looking at the examples in the RFC). Fixes #437670.
This commit is contained in:
parent
28713ecdf1
commit
5f9984e866
3 changed files with 384 additions and 40 deletions
18
ChangeLog
18
ChangeLog
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@ -1,3 +1,21 @@
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2007-05-12 Wim Taymans <wim@fluendo.com>
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Patch by: Peter Kjellerstedt <pkj at axis com>
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* gst/rtsp/rtsptransport.c: (rtsp_transport_init), (parse_mode),
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(parse_range), (range_as_text), (rtsp_transport_mode_as_text),
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(rtsp_transport_profile_as_text), (rtsp_transport_ltrans_as_text),
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(rtsp_transport_parse), (rtsp_transport_as_text):
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* gst/rtsp/rtsptransport.h:
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Add validation to rtsp_transport_parse().
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Add rtsp_transport_as_text() to generate an RTSP header from an
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RTSPTransport.
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Change ssrc to guint (was a string) since that is what it is, even
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though it is sent as a hex string.
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Correctly identify PLAY|RECORD mode parameters (the syntax in the RFC is
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incorrect, which can be seen when looking at the examples in the RFC).
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Fixes #437670.
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2007-05-11 Zaheer Abbas Merali <<zaheerabbas at merali dot org>>
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Patch by: Eric Anholt
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@ -47,6 +47,22 @@
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#define MAX_MANAGERS 2
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typedef enum
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{
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RTSP_TRANSPORT_DELIVERY = 1 << 0, /* multicast | unicast */
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RTSP_TRANSPORT_DESTINATION = 1 << 1,
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RTSP_TRANSPORT_SOURCE = 1 << 2,
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RTSP_TRANSPORT_INTERLEAVED = 1 << 3,
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RTSP_TRANSPORT_APPEND = 1 << 4,
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RTSP_TRANSPORT_TTL = 1 << 5,
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RTSP_TRANSPORT_LAYERS = 1 << 6,
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RTSP_TRANSPORT_PORT = 1 << 7,
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RTSP_TRANSPORT_CLIENT_PORT = 1 << 8,
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RTSP_TRANSPORT_SERVER_PORT = 1 << 9,
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RTSP_TRANSPORT_SSRC = 1 << 10,
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RTSP_TRANSPORT_MODE = 1 << 11,
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} RTSPTransportParameter;
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typedef struct
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{
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const gchar *name;
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@ -84,9 +100,16 @@ static const RTSPLTransMap ltrans[] = {
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{"udp", RTSP_LOWER_TRANS_UDP},
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{"mcast", RTSP_LOWER_TRANS_UDP_MCAST},
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{"tcp", RTSP_LOWER_TRANS_TCP},
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{NULL, RTSP_LOWER_TRANS_UDP_MCAST} /* UDP is default */
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{NULL, RTSP_LOWER_TRANS_UNKNOWN}
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};
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#define RTSP_TRANSPORT_PARAMETER_IS_UNIQUE(param) \
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G_STMT_START { \
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if ((transport_params & (param)) != 0) \
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goto invalid_transport; \
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transport_params |= (param); \
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} G_STMT_END
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RTSPResult
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rtsp_transport_new (RTSPTransport ** transport)
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{
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@ -108,15 +131,22 @@ rtsp_transport_init (RTSPTransport * transport)
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g_free (transport->destination);
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g_free (transport->source);
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g_free (transport->ssrc);
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memset (transport, 0, sizeof (RTSPTransport));
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transport->trans = RTSP_TRANS_RTP;
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transport->profile = RTSP_PROFILE_AVP;
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transport->lower_transport = RTSP_LOWER_TRANS_UDP;
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transport->lower_transport = RTSP_LOWER_TRANS_UDP_MCAST;
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transport->mode_play = TRUE;
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transport->mode_record = FALSE;
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transport->interleaved.min = -1;
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transport->interleaved.max = -1;
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transport->port.min = -1;
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transport->port.max = -1;
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transport->client_port.min = -1;
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transport->client_port.max = -1;
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transport->server_port.min = -1;
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transport->server_port.max = -1;
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return RTSP_OK;
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}
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@ -157,31 +187,110 @@ rtsp_transport_get_manager (RTSPTransMode trans, const gchar ** manager,
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}
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static void
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parse_mode (RTSPTransport * transport, gchar * str)
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parse_mode (RTSPTransport * transport, const gchar * str)
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{
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transport->mode_play = (strstr (str, "\"play\"") != NULL);
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transport->mode_record = (strstr (str, "\"record\"") != NULL);
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transport->mode_play = (strstr (str, "play") != NULL);
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transport->mode_record = (strstr (str, "record") != NULL);
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}
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static void
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parse_range (RTSPTransport * transport, gchar * str, RTSPRange * range)
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parse_range (const gchar * str, RTSPRange * range)
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{
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gchar *minus;
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gchar *tmp;
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/* even though strtol() allows white space, plus and minus in front of
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* the number, we do not allow it
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*/
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if (g_ascii_isspace (*str) || *str == '+' || *str == '-')
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goto invalid_range;
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minus = strstr (str, "-");
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if (minus) {
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range->min = atoi (str);
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range->max = atoi (minus + 1);
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if (g_ascii_isspace (minus[1]) || minus[1] == '+' || minus[1] == '-')
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goto invalid_range;
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range->min = strtol (str, &tmp, 10);
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if (str == tmp || tmp != minus)
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goto invalid_range;
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range->max = strtol (minus + 1, &tmp, 10);
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if (*tmp && *tmp != ';')
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goto invalid_range;
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} else {
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range->min = atoi (str);
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range->min = strtol (str, &tmp, 10);
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if (str == tmp || (*tmp && *tmp != ';'))
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goto invalid_range;
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range->max = -1;
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}
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return;
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invalid_range:
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{
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range->min = -1;
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range->max = -1;
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return;
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}
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}
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static gchar *
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range_as_text (const RTSPRange * range)
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{
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if (range->min < 0)
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return NULL;
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else if (range->max < 0)
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return g_strdup_printf ("%d", range->min);
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else
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return g_strdup_printf ("%d-%d", range->min, range->max);
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}
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static const gchar *
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rtsp_transport_mode_as_text (const RTSPTransport * transport)
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{
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gint i;
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for (i = 0; transports[i].name; i++)
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if (transports[i].mode == transport->trans)
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return transports[i].name;
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return NULL;
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}
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static const gchar *
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rtsp_transport_profile_as_text (const RTSPTransport * transport)
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{
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gint i;
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for (i = 0; profiles[i].name; i++)
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if (profiles[i].profile == transport->profile)
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return profiles[i].name;
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return NULL;
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}
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static const gchar *
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rtsp_transport_ltrans_as_text (const RTSPTransport * transport)
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{
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gint i;
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/* need to special case RTSP_LOWER_TRANS_UDP_MCAST */
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if (transport->lower_transport == RTSP_LOWER_TRANS_UDP_MCAST)
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return "udp";
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for (i = 0; ltrans[i].name; i++)
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if (ltrans[i].ltrans == transport->lower_transport)
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return ltrans[i].name;
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return NULL;
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}
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RTSPResult
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rtsp_transport_parse (const gchar * str, RTSPTransport * transport)
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{
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gchar **split, *down;
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gchar **split, *down, **transp = NULL;
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guint transport_params = 0;
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gint i;
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g_return_val_if_fail (transport != NULL, RTSP_EINVAL);
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@ -193,52 +302,112 @@ rtsp_transport_parse (const gchar * str, RTSPTransport * transport)
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down = g_ascii_strdown (str, -1);
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split = g_strsplit (down, ";", 0);
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g_free (down);
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/* First field contains the transport/profile/lower_transport */
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i = 0;
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if (split[0]) {
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if (split[0] == NULL)
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goto invalid_transport;
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transp = g_strsplit (split[0], "/", 0);
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if (transp[0] == NULL || transp[1] == NULL)
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goto invalid_transport;
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for (i = 0; transports[i].name; i++)
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if (strstr (split[0], transports[i].name))
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if (strcmp (transp[0], transports[i].name) == 0)
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break;
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transport->trans = transports[i].mode;
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for (i = 0; profiles[i].name; i++)
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if (strstr (split[0], profiles[i].name))
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if (strcmp (transp[1], profiles[i].name) == 0)
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break;
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transport->profile = profiles[i].profile;
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if (transp[2] != NULL) {
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for (i = 0; ltrans[i].name; i++)
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if (strstr (split[0], ltrans[i].name))
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if (strcmp (transp[2], ltrans[i].name) == 0)
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break;
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transport->lower_transport = ltrans[i].ltrans;
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i = 1;
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}
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while (split[i]) {
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if (g_str_has_prefix (split[i], "multicast")) {
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} else {
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/* specifying the lower transport is optional */
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if (transport->trans == RTSP_TRANS_RTP &&
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transport->profile == RTSP_PROFILE_AVP)
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transport->lower_transport = RTSP_LOWER_TRANS_UDP_MCAST;
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} else if (g_str_has_prefix (split[i], "unicast")) {
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else
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transport->lower_transport = RTSP_LOWER_TRANS_UNKNOWN;
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}
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g_strfreev (transp);
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transp = NULL;
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if (transport->trans == RTSP_TRANS_UNKNOWN ||
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transport->profile == RTSP_PROFILE_UNKNOWN ||
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transport->lower_transport == RTSP_LOWER_TRANS_UNKNOWN)
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goto unsupported_transport;
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i = 1;
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while (split[i]) {
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if (strcmp (split[i], "multicast") == 0) {
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RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_DELIVERY);
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if (transport->lower_transport == RTSP_LOWER_TRANS_TCP)
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goto invalid_transport;
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transport->lower_transport = RTSP_LOWER_TRANS_UDP_MCAST;
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} else if (strcmp (split[i], "unicast") == 0) {
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RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_DELIVERY);
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if (transport->lower_transport == RTSP_LOWER_TRANS_UDP_MCAST)
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transport->lower_transport = RTSP_LOWER_TRANS_UDP;
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} else if (g_str_has_prefix (split[i], "destination=")) {
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RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_DESTINATION);
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transport->destination = g_strdup (split[i] + 12);
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} else if (g_str_has_prefix (split[i], "source=")) {
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RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_SOURCE);
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transport->source = g_strdup (split[i] + 7);
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} else if (g_str_has_prefix (split[i], "layers=")) {
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transport->layers = atoi (split[i] + 7);
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RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_LAYERS);
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transport->layers = strtoul (split[i] + 7, NULL, 10);
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} else if (g_str_has_prefix (split[i], "mode=")) {
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RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_MODE);
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parse_mode (transport, split[i] + 5);
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} else if (g_str_has_prefix (split[i], "append")) {
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if (!transport->mode_play && !transport->mode_record)
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goto invalid_transport;
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} else if (strcmp (split[i], "append") == 0) {
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RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_APPEND);
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transport->append = TRUE;
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} else if (g_str_has_prefix (split[i], "interleaved=")) {
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parse_range (transport, split[i] + 12, &transport->interleaved);
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RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_INTERLEAVED);
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parse_range (split[i] + 12, &transport->interleaved);
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if (transport->interleaved.min < 0 ||
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transport->interleaved.min >= 256 ||
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transport->interleaved.max >= 256)
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goto invalid_transport;
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} else if (g_str_has_prefix (split[i], "ttl=")) {
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transport->ttl = atoi (split[i] + 4);
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RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_TTL);
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transport->ttl = strtoul (split[i] + 4, NULL, 10);
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if (transport->ttl >= 256)
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goto invalid_transport;
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} else if (g_str_has_prefix (split[i], "port=")) {
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parse_range (transport, split[i] + 5, &transport->port);
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RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_PORT);
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parse_range (split[i] + 5, &transport->port);
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if (transport->port.min < 0 ||
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transport->port.min >= 65536 || transport->port.max >= 65536)
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goto invalid_transport;
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} else if (g_str_has_prefix (split[i], "client_port=")) {
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parse_range (transport, split[i] + 12, &transport->client_port);
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RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_CLIENT_PORT);
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parse_range (split[i] + 12, &transport->client_port);
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if (transport->client_port.min < 0 ||
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transport->client_port.min >= 65536 ||
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transport->client_port.max >= 65536)
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goto invalid_transport;
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} else if (g_str_has_prefix (split[i], "server_port=")) {
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parse_range (transport, split[i] + 12, &transport->server_port);
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RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_SERVER_PORT);
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parse_range (split[i] + 12, &transport->server_port);
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if (transport->server_port.min < 0 ||
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transport->server_port.min >= 65536 ||
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transport->server_port.max >= 65536)
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goto invalid_transport;
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} else if (g_str_has_prefix (split[i], "ssrc=")) {
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transport->ssrc = g_strdup (split[i] + 5);
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RTSP_TRANSPORT_PARAMETER_IS_UNIQUE (RTSP_TRANSPORT_SSRC);
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transport->ssrc = strtoul (split[i] + 5, NULL, 16);
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} else {
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/* unknown field... */
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g_warning ("unknown transport field \"%s\"", split[i]);
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@ -246,9 +415,165 @@ rtsp_transport_parse (const gchar * str, RTSPTransport * transport)
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i++;
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}
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g_strfreev (split);
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g_free (down);
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return RTSP_OK;
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unsupported_transport:
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{
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g_strfreev (split);
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return RTSP_ERROR;
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}
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invalid_transport:
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{
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g_strfreev (transp);
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g_strfreev (split);
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return RTSP_EINVAL;
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}
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}
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gchar *
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rtsp_transport_as_text (RTSPTransport * transport)
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{
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GPtrArray *strs;
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gchar *res;
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const gchar *tmp;
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g_return_val_if_fail (transport != NULL, NULL);
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strs = g_ptr_array_new ();
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/* add the transport specifier */
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if ((tmp = rtsp_transport_mode_as_text (transport)) == NULL)
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goto invalid_transport;
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g_ptr_array_add (strs, g_ascii_strup (tmp, -1));
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g_ptr_array_add (strs, g_strdup ("/"));
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if ((tmp = rtsp_transport_profile_as_text (transport)) == NULL)
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goto invalid_transport;
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g_ptr_array_add (strs, g_ascii_strup (tmp, -1));
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if (transport->trans != RTSP_TRANS_RTP ||
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transport->profile != RTSP_PROFILE_AVP ||
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transport->lower_transport == RTSP_LOWER_TRANS_TCP) {
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g_ptr_array_add (strs, g_strdup ("/"));
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if ((tmp = rtsp_transport_ltrans_as_text (transport)) == NULL)
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goto invalid_transport;
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g_ptr_array_add (strs, g_ascii_strup (tmp, -1));
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}
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/*
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* the order of the following parameters is the same as the one specified in
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* RFC 2326 to please some weird RTSP clients that require it
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*/
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/* add the unicast/multicast parameter */
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if (transport->lower_transport == RTSP_LOWER_TRANS_UDP_MCAST)
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g_ptr_array_add (strs, g_strdup (";multicast"));
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else
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g_ptr_array_add (strs, g_strdup (";unicast"));
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/* add the destination parameter */
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if (transport->destination != NULL) {
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g_ptr_array_add (strs, g_strdup (";destination="));
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g_ptr_array_add (strs, g_strdup (transport->destination));
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}
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/* add the source parameter */
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if (transport->source != NULL) {
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g_ptr_array_add (strs, g_strdup (";source="));
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g_ptr_array_add (strs, g_strdup (transport->source));
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}
|
||||
|
||||
/* add the interleaved parameter */
|
||||
if (transport->lower_transport == RTSP_LOWER_TRANS_TCP &&
|
||||
transport->interleaved.min >= 0) {
|
||||
if (transport->interleaved.min < 256 && transport->interleaved.max < 256) {
|
||||
g_ptr_array_add (strs, g_strdup (";interleaved="));
|
||||
g_ptr_array_add (strs, range_as_text (&transport->interleaved));
|
||||
} else
|
||||
goto invalid_transport;
|
||||
}
|
||||
|
||||
/* add the append parameter */
|
||||
if (transport->mode_record && transport->append)
|
||||
g_ptr_array_add (strs, g_strdup (";append"));
|
||||
|
||||
/* add the ttl parameter */
|
||||
if (transport->lower_transport == RTSP_LOWER_TRANS_UDP_MCAST &&
|
||||
transport->ttl != 0) {
|
||||
if (transport->ttl < 256) {
|
||||
g_ptr_array_add (strs, g_strdup (";ttl="));
|
||||
g_ptr_array_add (strs, g_strdup_printf ("%u", transport->ttl));
|
||||
} else
|
||||
goto invalid_transport;
|
||||
}
|
||||
|
||||
/* add the layers parameter */
|
||||
if (transport->layers != 0) {
|
||||
g_ptr_array_add (strs, g_strdup (";layers="));
|
||||
g_ptr_array_add (strs, g_strdup_printf ("%u", transport->layers));
|
||||
}
|
||||
|
||||
/* add the port parameter */
|
||||
if (transport->trans == RTSP_TRANS_RTP && transport->port.min >= 0) {
|
||||
if (transport->port.min < 65536 && transport->port.max < 65536) {
|
||||
g_ptr_array_add (strs, g_strdup (";port="));
|
||||
g_ptr_array_add (strs, range_as_text (&transport->port));
|
||||
} else
|
||||
goto invalid_transport;
|
||||
}
|
||||
|
||||
/* add the client_port parameter */
|
||||
if (transport->trans == RTSP_TRANS_RTP && transport->client_port.min >= 0) {
|
||||
if (transport->client_port.min < 65536 &&
|
||||
transport->client_port.max < 65536) {
|
||||
g_ptr_array_add (strs, g_strdup (";client_port="));
|
||||
g_ptr_array_add (strs, range_as_text (&transport->client_port));
|
||||
} else
|
||||
goto invalid_transport;
|
||||
}
|
||||
|
||||
/* add the server_port parameter */
|
||||
if (transport->trans == RTSP_TRANS_RTP && transport->server_port.min >= 0) {
|
||||
if (transport->server_port.min < 65536 &&
|
||||
transport->server_port.max < 65536) {
|
||||
g_ptr_array_add (strs, g_strdup (";server_port="));
|
||||
g_ptr_array_add (strs, range_as_text (&transport->server_port));
|
||||
} else
|
||||
goto invalid_transport;
|
||||
}
|
||||
|
||||
/* add the ssrc parameter */
|
||||
if (transport->lower_transport != RTSP_LOWER_TRANS_UDP_MCAST &&
|
||||
transport->ssrc != 0) {
|
||||
g_ptr_array_add (strs, g_strdup (";ssrc="));
|
||||
g_ptr_array_add (strs, g_strdup_printf ("%08X", transport->ssrc));
|
||||
}
|
||||
|
||||
/* add the mode parameter */
|
||||
if (transport->mode_play && transport->mode_record)
|
||||
g_ptr_array_add (strs, g_strdup (";mode=\"PLAY,RECORD\""));
|
||||
else if (transport->mode_record)
|
||||
g_ptr_array_add (strs, g_strdup (";mode=\"RECORD\""));
|
||||
else if (transport->mode_play)
|
||||
g_ptr_array_add (strs, g_strdup (";mode=\"PLAY\""));
|
||||
|
||||
/* add a terminating NULL */
|
||||
g_ptr_array_add (strs, NULL);
|
||||
|
||||
res = g_strjoinv (NULL, (gchar **) strs->pdata);
|
||||
g_strfreev ((gchar **) g_ptr_array_free (strs, FALSE));
|
||||
|
||||
return res;
|
||||
|
||||
invalid_transport:
|
||||
{
|
||||
g_ptr_array_add (strs, NULL);
|
||||
g_strfreev ((gchar **) g_ptr_array_free (strs, FALSE));
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
RTSPResult
|
||||
|
|
|
@ -117,21 +117,21 @@ typedef struct _RTSPTransport {
|
|||
|
||||
gchar *destination;
|
||||
gchar *source;
|
||||
gint layers;
|
||||
guint layers;
|
||||
gboolean mode_play;
|
||||
gboolean mode_record;
|
||||
gboolean append;
|
||||
RTSPRange interleaved;
|
||||
|
||||
/* multicast specific */
|
||||
gint ttl;
|
||||
guint ttl;
|
||||
|
||||
/* UDP specific */
|
||||
RTSPRange port;
|
||||
RTSPRange client_port;
|
||||
RTSPRange server_port;
|
||||
/* RTP specific */
|
||||
gchar *ssrc;
|
||||
guint ssrc;
|
||||
|
||||
} RTSPTransport;
|
||||
|
||||
|
@ -139,6 +139,7 @@ RTSPResult rtsp_transport_new (RTSPTransport **transport);
|
|||
RTSPResult rtsp_transport_init (RTSPTransport *transport);
|
||||
|
||||
RTSPResult rtsp_transport_parse (const gchar *str, RTSPTransport *transport);
|
||||
gchar *rtsp_transport_as_text (RTSPTransport *transport);
|
||||
|
||||
RTSPResult rtsp_transport_get_mime (RTSPTransMode trans, const gchar **mime);
|
||||
RTSPResult rtsp_transport_get_manager (RTSPTransMode trans, const gchar **manager, guint option);
|
||||
|
|
Loading…
Reference in a new issue