return ast_sockaddr_isnull(addr) || ast_sockaddr_is_any(addr);
}
-/*! \brief Process SIP SDP offer, select formats and activate RTP channels
+/*! \brief Process SIP SDP offer, select formats and activate media channels
If offer is rejected, we will not change any properties of the call
Return 0 on success, a negative value on errors.
Must be called after find_sdp().
struct ast_sockaddr videosa;
struct ast_sockaddr textsa;
struct ast_sockaddr imagesa;
- struct ast_sockaddr *sa = NULL; /*!< RTP Audio host IP */
- struct ast_sockaddr *vsa = NULL; /*!< RTP video host IP */
- struct ast_sockaddr *tsa = NULL; /*!< RTP text host IP */
- struct ast_sockaddr *isa = NULL; /*!< UDPTL host ip */
- int portno = -1; /*!< RTP Audio port number */
- int vportno = -1; /*!< RTP Video port number */
- int tportno = -1; /*!< RTP Text port number */
- int udptlportno = -1; /*!< UDPTL Image port number */
-
- /* Peer capability is the capability in the SDP, non codec is RFC2833 DTMF (101) */
+ struct ast_sockaddr *sa = NULL; /*!< RTP audio destination IP address */
+ struct ast_sockaddr *vsa = NULL; /*!< RTP video destination IP address */
+ struct ast_sockaddr *tsa = NULL; /*!< RTP text destination IP address */
+ struct ast_sockaddr *isa = NULL; /*!< UDPTL image destination IP address */
+ int portno = -1; /*!< RTP audio destination port number */
+ int vportno = -1; /*!< RTP video destination port number */
+ int tportno = -1; /*!< RTP text destination port number */
+ int udptlportno = -1; /*!< UDPTL image destination port number */
+
+ /* Peer capability is the capability in the SDP, non codec is RFC2833 DTMF (101) */
struct ast_format_cap *peercapability = ast_format_cap_alloc_nolock();
struct ast_format_cap *vpeercapability = ast_format_cap_alloc_nolock();
struct ast_format_cap *tpeercapability = ast_format_cap_alloc_nolock();
int numberofports;
int numberofmediastreams = 0;
int last_rtpmap_codec = 0;
- int red_data_pt[10]; /* For T.140 red */
- int red_num_gen = 0; /* For T.140 red */
- char red_fmtp[100] = "empty"; /* For T.140 red */
+ int red_data_pt[10]; /* For T.140 RED */
+ int red_num_gen = 0; /* For T.140 RED */
+ char red_fmtp[100] = "empty"; /* For T.140 RED */
int debug = sip_debug_test_pvt(p);
/* START UNKNOWN */
memset(p->offered_media, 0, sizeof(p->offered_media));
- if (p->vrtp) {
- ast_rtp_codecs_payloads_clear(&newvideortp, NULL);
- }
-
- if (p->trtp) {
- ast_rtp_codecs_payloads_clear(&newtextrtp, NULL);
- }
-
/* Scan for the first media stream (m=) line to limit scanning of globals */
nextm = get_sdp_iterate(&next, req, "m");
if (ast_strlen_zero(nextm)) {
break;
}
- ast_debug(3, "Processing session-level SDP %c=%s... %s\n", type, value, (processed == TRUE)? "OK." : "UNSUPPORTED.");
+ ast_debug(3, "Processing session-level SDP %c=%s... %s\n", type, value, (processed == TRUE)? "OK." : "UNSUPPORTED OR FAILED.");
}
/* default: novideo and notext set */
char protocol[5] = {0,};
int x;
- numberofports = 1;
+ numberofports = 0;
len = -1;
start = next;
m = nextm;
iterator = next;
nextm = get_sdp_iterate(&next, req, "m");
- /* Search for audio media definition */
- if ((sscanf(m, "audio %30u/%30u RTP/%4s %n", &x, &numberofports, protocol, &len) == 3 && len > 0) ||
- (sscanf(m, "audio %30u RTP/%4s %n", &x, protocol, &len) == 2 && len > 0)) {
- if (x == 0) {
- ast_log(LOG_WARNING, "ignoring 'audio' media offer because port number is zero\n");
- continue;
- }
- if (!strcmp(protocol, "SAVP")) {
- secure_audio = 1;
- } else if (strcmp(protocol, "AVP")) {
- ast_log(LOG_WARNING, "unknown SDP media protocol in offer: %s\n", protocol);
- continue;
- }
- if (p->offered_media[SDP_AUDIO].order_offered) {
- ast_log(LOG_WARNING, "Multiple audio streams are not supported\n");
- res = -3;
- goto process_sdp_cleanup;
- }
- audio = TRUE;
- p->offered_media[SDP_AUDIO].order_offered = ++numberofmediastreams;
- portno = x;
+ /* Check for 'audio' media offer */
+ if (strncmp(m, "audio ", 6) == 0) {
+ if ((sscanf(m, "audio %30u/%30u RTP/%4s %n", &x, &numberofports, protocol, &len) == 3 && len > 0) ||
+ (sscanf(m, "audio %30u RTP/%4s %n", &x, protocol, &len) == 2 && len > 0)) {
+ if (x == 0) {
+ ast_log(LOG_WARNING, "Ignoring audio media offer because port number is zero\n");
+ continue;
+ }
+
+ /* Check number of ports offered for stream */
+ if (numberofports > 1) {
+ ast_log(LOG_WARNING, "%d ports offered for audio media, not supported by Asterisk. Will try anyway...\n", numberofports);
+ }
+
+ if (!strcmp(protocol, "SAVP")) {
+ secure_audio = 1;
+ } else if (strcmp(protocol, "AVP")) {
+ ast_log(LOG_WARNING, "Unknown RTP profile in audio offer: %s\n", m);
+ continue;
+ }
- /* Scan through the RTP payload types specified in a "m=" line: */
- codecs = m + len;
- ast_copy_string(p->offered_media[SDP_AUDIO].codecs, codecs, sizeof(p->offered_media[SDP_AUDIO].codecs));
- for (; !ast_strlen_zero(codecs); codecs = ast_skip_blanks(codecs + len)) {
- if (sscanf(codecs, "%30u%n", &codec, &len) != 1) {
- ast_log(LOG_WARNING, "Error in codec string '%s'\n", codecs);
+ if (p->offered_media[SDP_AUDIO].order_offered) {
+ ast_log(LOG_WARNING, "Rejecting non-primary audio stream: %s\n", m);
res = -1;
goto process_sdp_cleanup;
}
- if (debug)
- ast_verbose("Found RTP audio format %d\n", codec);
- ast_rtp_codecs_payloads_set_m_type(&newaudiortp, NULL, codec);
- }
- /* Search for video media definition */
- } else if ((sscanf(m, "video %30u/%30u RTP/%4s %n", &x, &numberofports, protocol, &len) == 3 && len > 0) ||
- (sscanf(m, "video %30u RTP/%4s %n", &x, protocol, &len) == 2 && len > 0)) {
- if (x == 0) {
- ast_log(LOG_WARNING, "ignoring 'video' media offer because port number is zero\n");
- continue;
- }
- if (!strcmp(protocol, "SAVP")) {
- secure_video = 1;
- } else if (strcmp(protocol, "AVP")) {
- ast_log(LOG_WARNING, "unknown SDP media protocol in offer: %s\n", protocol);
- continue;
- }
- if (p->offered_media[SDP_VIDEO].order_offered) {
- ast_log(LOG_WARNING, "Multiple video streams are not supported\n");
- res = -3;
+ audio = TRUE;
+ p->offered_media[SDP_AUDIO].order_offered = ++numberofmediastreams;
+ portno = x;
+
+ /* Scan through the RTP payload types specified in a "m=" line: */
+ codecs = m + len;
+ ast_copy_string(p->offered_media[SDP_AUDIO].codecs, codecs, sizeof(p->offered_media[SDP_AUDIO].codecs));
+ for (; !ast_strlen_zero(codecs); codecs = ast_skip_blanks(codecs + len)) {
+ if (sscanf(codecs, "%30u%n", &codec, &len) != 1) {
+ ast_log(LOG_WARNING, "Invalid syntax in RTP audio format list: %s\n", codecs);
+ res = -1;
+ goto process_sdp_cleanup;
+ }
+ if (debug) {
+ ast_verbose("Found RTP audio format %d\n", codec);
+ }
+
+ ast_rtp_codecs_payloads_set_m_type(&newaudiortp, NULL, codec);
+ }
+ } else {
+ ast_log(LOG_WARNING, "Rejecting audio media offer due to invalid or unsupported syntax: %s\n", m);
+ res = -1;
goto process_sdp_cleanup;
}
- video = TRUE;
- p->novideo = FALSE;
- p->offered_media[SDP_VIDEO].order_offered = ++numberofmediastreams;
- vportno = x;
-
- /* Scan through the RTP payload types specified in a "m=" line: */
- codecs = m + len;
- ast_copy_string(p->offered_media[SDP_VIDEO].codecs, codecs, sizeof(p->offered_media[SDP_VIDEO].codecs));
- for (; !ast_strlen_zero(codecs); codecs = ast_skip_blanks(codecs + len)) {
- if (sscanf(codecs, "%30u%n", &codec, &len) != 1) {
- ast_log(LOG_WARNING, "Error in codec string '%s'\n", codecs);
+ }
+ /* Check for 'video' media offer */
+ else if (strncmp(m, "video ", 6) == 0) {
+ if ((sscanf(m, "video %30u/%30u RTP/%4s %n", &x, &numberofports, protocol, &len) == 3 && len > 0) ||
+ (sscanf(m, "video %30u RTP/%4s %n", &x, protocol, &len) == 2 && len > 0)) {
+ if (x == 0) {
+ ast_log(LOG_WARNING, "Ignoring video media offer because port number is zero\n");
+ continue;
+ }
+
+ /* Check number of ports offered for stream */
+ if (numberofports > 1) {
+ ast_log(LOG_WARNING, "%d ports offered for video media, not supported by Asterisk. Will try anyway...\n", numberofports);
+ }
+
+ if (!strcmp(protocol, "SAVP")) {
+ secure_video = 1;
+ } else if (strcmp(protocol, "AVP")) {
+ ast_log(LOG_WARNING, "Unknown RTP profile in video offer: %s\n", m);
+ continue;
+ }
+
+ if (p->offered_media[SDP_VIDEO].order_offered) {
+ ast_log(LOG_WARNING, "Rejecting non-primary video stream: %s\n", m);
res = -1;
goto process_sdp_cleanup;
}
- if (debug)
- ast_verbose("Found RTP video format %d\n", codec);
- ast_rtp_codecs_payloads_set_m_type(&newvideortp, NULL, codec);
- }
- /* Search for text media definition */
- } else if ((sscanf(m, "text %30u/%30u RTP/AVP %n", &x, &numberofports, &len) == 2 && len > 0) ||
- (sscanf(m, "text %30u RTP/AVP %n", &x, &len) == 1 && len > 0)) {
- if (x == 0) {
- ast_log(LOG_WARNING, "ignoring 'text' media offer because port number is zero\n");
- continue;
- }
- if (p->offered_media[SDP_TEXT].order_offered) {
- ast_log(LOG_WARNING, "Multiple text streams are not supported\n");
- res = -3;
+
+ video = TRUE;
+ p->novideo = FALSE;
+ p->offered_media[SDP_VIDEO].order_offered = ++numberofmediastreams;
+ vportno = x;
+
+ /* Scan through the RTP payload types specified in a "m=" line: */
+ codecs = m + len;
+ ast_copy_string(p->offered_media[SDP_VIDEO].codecs, codecs, sizeof(p->offered_media[SDP_VIDEO].codecs));
+ for (; !ast_strlen_zero(codecs); codecs = ast_skip_blanks(codecs + len)) {
+ if (sscanf(codecs, "%30u%n", &codec, &len) != 1) {
+ ast_log(LOG_WARNING, "Invalid syntax in RTP video format list: %s\n", codecs);
+ res = -1;
+ goto process_sdp_cleanup;
+ }
+ if (debug) {
+ ast_verbose("Found RTP video format %d\n", codec);
+ }
+ ast_rtp_codecs_payloads_set_m_type(&newvideortp, NULL, codec);
+ }
+ } else {
+ ast_log(LOG_WARNING, "Rejecting video media offer due to invalid or unsupported syntax: %s\n", m);
+ res = -1;
goto process_sdp_cleanup;
}
- text = TRUE;
- p->notext = FALSE;
- p->offered_media[SDP_TEXT].order_offered = ++numberofmediastreams;
- tportno = x;
-
- /* Scan through the RTP payload types specified in a "m=" line: */
- codecs = m + len;
- ast_copy_string(p->offered_media[SDP_TEXT].codecs, codecs, sizeof(p->offered_media[SDP_TEXT].codecs));
- for (; !ast_strlen_zero(codecs); codecs = ast_skip_blanks(codecs + len)) {
- if (sscanf(codecs, "%30u%n", &codec, &len) != 1) {
- ast_log(LOG_WARNING, "Error in codec string '%s'\n", codecs);
+ }
+ /* Check for 'text' media offer */
+ else if (strncmp(m, "text ", 5) == 0) {
+ if ((sscanf(m, "text %30u/%30u RTP/AVP %n", &x, &numberofports, &len) == 2 && len > 0) ||
+ (sscanf(m, "text %30u RTP/AVP %n", &x, &len) == 1 && len > 0)) {
+ if (x == 0) {
+ ast_log(LOG_WARNING, "Ignoring text media offer because port number is zero\n");
+ continue;
+ }
+
+ /* Check number of ports offered for stream */
+ if (numberofports > 1) {
+ ast_log(LOG_WARNING, "%d ports offered for text media, not supported by Asterisk. Will try anyway...\n", numberofports);
+ }
+
+ if (p->offered_media[SDP_TEXT].order_offered) {
+ ast_log(LOG_WARNING, "Rejecting non-primary text stream: %s\n", m);
res = -1;
goto process_sdp_cleanup;
}
- if (debug)
- ast_verbose("Found RTP text format %d\n", codec);
- ast_rtp_codecs_payloads_set_m_type(&newtextrtp, NULL, codec);
- }
- /* Search for image media definition */
- } else if (((sscanf(m, "image %30u udptl t38%n", &x, &len) == 1 && len > 0) ||
- (sscanf(m, "image %30u UDPTL t38%n", &x, &len) == 1 && len > 0))) {
- if (x == 0) {
- ast_log(LOG_WARNING, "ignoring 'image' media offer because port number is zero\n");
- continue;
- }
- if (initialize_udptl(p)) {
- continue;
- }
- if (p->offered_media[SDP_IMAGE].order_offered) {
- ast_log(LOG_WARNING, "Multiple T.38 streams are not supported\n");
- res = -3;
+ text = TRUE;
+ p->notext = FALSE;
+ p->offered_media[SDP_TEXT].order_offered = ++numberofmediastreams;
+ tportno = x;
+
+ /* Scan through the RTP payload types specified in a "m=" line: */
+ codecs = m + len;
+ ast_copy_string(p->offered_media[SDP_TEXT].codecs, codecs, sizeof(p->offered_media[SDP_TEXT].codecs));
+ for (; !ast_strlen_zero(codecs); codecs = ast_skip_blanks(codecs + len)) {
+ if (sscanf(codecs, "%30u%n", &codec, &len) != 1) {
+ ast_log(LOG_WARNING, "Invalid syntax in RTP video format list: %s\n", codecs);
+ res = -1;
+ goto process_sdp_cleanup;
+ }
+ if (debug) {
+ ast_verbose("Found RTP text format %d\n", codec);
+ }
+ ast_rtp_codecs_payloads_set_m_type(&newtextrtp, NULL, codec);
+ }
+ } else {
+ ast_log(LOG_WARNING, "Rejecting text media offer due to invalid or unsupported syntax: %s\n", m);
+ res = -1;
goto process_sdp_cleanup;
}
- image = TRUE;
- if (debug)
- ast_verbose("Got T.38 offer in SDP in dialog %s\n", p->callid);
- p->offered_media[SDP_IMAGE].order_offered = ++numberofmediastreams;
- udptlportno = x;
+ }
+ /* Check for 'image' media offer */
+ else if (strncmp(m, "image ", 6) == 0) {
+ if (((sscanf(m, "image %30u udptl t38%n", &x, &len) == 1 && len > 0) ||
+ (sscanf(m, "image %30u UDPTL t38%n", &x, &len) == 1 && len > 0))) {
+ if (x == 0) {
+ ast_log(LOG_WARNING, "Ignoring image media offer because port number is zero\n");
+ continue;
+ }
+
+ if (initialize_udptl(p)) {
+ res = -1;
+ goto process_sdp_cleanup;
+ }
- if (p->t38.state != T38_ENABLED) {
- memset(&p->t38.their_parms, 0, sizeof(p->t38.their_parms));
+ if (p->offered_media[SDP_IMAGE].order_offered) {
+ ast_log(LOG_WARNING, "Rejecting non-primary image stream: %s\n", m);
+ res = -1;
+ goto process_sdp_cleanup;
+ }
- /* default EC to none, the remote end should
- * respond with the EC they want to use */
- ast_udptl_set_error_correction_scheme(p->udptl, UDPTL_ERROR_CORRECTION_NONE);
+ image = TRUE;
+ if (debug) {
+ ast_verbose("Got T.38 offer in SDP in dialog %s\n", p->callid);
+ }
+
+ p->offered_media[SDP_IMAGE].order_offered = ++numberofmediastreams;
+ udptlportno = x;
+
+ if (p->t38.state != T38_ENABLED) {
+ memset(&p->t38.their_parms, 0, sizeof(p->t38.their_parms));
+
+ /* default EC to none, the remote end should
+ * respond with the EC they want to use */
+ ast_udptl_set_error_correction_scheme(p->udptl, UDPTL_ERROR_CORRECTION_NONE);
+ }
+ } else {
+ ast_log(LOG_WARNING, "Rejecting image media offer due to invalid or unsupported syntax: %s\n", m);
+ res = -1;
+ goto process_sdp_cleanup;
}
} else {
- ast_log(LOG_WARNING, "Unsupported SDP media type in offer: %s\n", m);
+ ast_log(LOG_WARNING, "Unsupported top-level media type in offer: %s\n", m);
continue;
}
- /* Check for number of ports */
- if (numberofports > 1)
- ast_log(LOG_WARNING, "SDP offered %d ports for media, not supported by Asterisk. Will try anyway...\n", numberofports);
-
/* Media stream specific parameters */
while ((type = get_sdp_line(&iterator, next - 1, req, &value)) != '\0') {
int processed = FALSE;
}
ast_debug(3, "Processing media-level (%s) SDP %c=%s... %s\n",
- (audio == TRUE)? "audio" : (video == TRUE)? "video" : "image",
- type, value,
- (processed == TRUE)? "OK." : "UNSUPPORTED.");
+ (audio == TRUE)? "audio" : (video == TRUE)? "video" : (text == TRUE)? "text" : "image",
+ type, value,
+ (processed == TRUE)? "OK." : "UNSUPPORTED OR FAILED.");
}
}
-
/* Sanity checks */
if (!sa && !vsa && !tsa && !isa) {
ast_log(LOG_WARNING, "Insufficient information in SDP (c=)...\n");
goto process_sdp_cleanup;
}
- if (portno == -1 && vportno == -1 && udptlportno == -1 && tportno == -1) {
- /* No acceptable offer found in SDP - we have no ports */
- /* Do not change RTP or VRTP if this is a re-invite */
+ if ((portno == -1) &&
+ (vportno == -1) &&
+ (tportno == -1) &&
+ (udptlportno == -1)) {
ast_log(LOG_WARNING, "Failing due to no acceptable offer found\n");
- res = -2;
+ res = -1;
goto process_sdp_cleanup;
}
if (secure_audio && !(p->srtp && (ast_test_flag(p->srtp, SRTP_CRYPTO_OFFER_OK)))) {
ast_log(LOG_WARNING, "Can't provide secure audio requested in SDP offer\n");
- res = -4;
+ res = -1;
goto process_sdp_cleanup;
}
if (!secure_audio && p->srtp) {
- ast_log(LOG_WARNING, "We are requesting SRTP, but they responded without it!\n");
- res = -4;
+ ast_log(LOG_WARNING, "We are requesting SRTP for audio, but they responded without it!\n");
+ res = -1;
goto process_sdp_cleanup;
}
if (secure_video && !(p->vsrtp && (ast_test_flag(p->vsrtp, SRTP_CRYPTO_OFFER_OK)))) {
ast_log(LOG_WARNING, "Can't provide secure video requested in SDP offer\n");
- res = -4;
+ res = -1;
goto process_sdp_cleanup;
}
if (!p->novideo && !secure_video && p->vsrtp) {
- ast_log(LOG_WARNING, "We are requesting SRTP, but they responded without it!\n");
- res = -4;
+ ast_log(LOG_WARNING, "We are requesting SRTP for video, but they responded without it!\n");
+ res = -1;
goto process_sdp_cleanup;
}
if (!(secure_audio || secure_video) && ast_test_flag(&p->flags[1], SIP_PAGE2_USE_SRTP)) {
ast_log(LOG_WARNING, "Matched device setup to use SRTP, but request was not!\n");
- res = -4;
+ res = -1;
goto process_sdp_cleanup;
}
}
if (portno != -1 || vportno != -1 || tportno != -1) {
- /* We are now ready to change the sip session and p->rtp and p->vrtp with the offered codecs, since
+ /* We are now ready to change the sip session and RTP structures with the offered codecs, since
they are acceptable */
ast_format_cap_copy(p->jointcaps, newjointcapability); /* Our joint codec profile for this call */
- ast_format_cap_copy(p->peercaps, newpeercapability); /* The other sides capability in latest offer */
+ ast_format_cap_copy(p->peercaps, newpeercapability); /* The other side's capability in latest offer */
p->jointnoncodeccapability = newnoncodeccapability; /* DTMF capabilities */
-
+
/* respond with single most preferred joint codec, limiting the other side's choice */
if (ast_test_flag(&p->flags[1], SIP_PAGE2_PREFERRED_CODEC)) {
ast_codec_choose(&p->prefs, p->jointcaps, 1, &tmp_fmt);
ast_verbose("Peer doesn't provide T.140\n");
}
}
+
/* Setup image address and port */
if (p->udptl) {
if (udptlportno > 0) {
projects / thirdparty / asterisk.git / commitdiff
