1 /*****************************************************************************\
3 ** Linux Call Router **
5 **---------------------------------------------------------------------------**
6 ** Copyright: Andreas Eversberg **
10 \*****************************************************************************/
13 #include <sofia-sip/sip_status.h>
14 #include <sofia-sip/su_log.h>
15 #include <sofia-sip/sdp.h>
16 #include <sofia-sip/sip_header.h>
20 unsigned char flip[256];
22 int any_sip_interface = 0;
24 //pthread_mutex_t mutex_msg;
25 su_home_t sip_home[1];
28 char interface_name[64];
35 static int delete_event(struct lcr_work *work, void *instance, int index);
36 static int load_timer(struct lcr_timer *timer, void *instance, int index);
41 Psip::Psip(int type, char *portname, struct port_settings *settings, struct interface *interface) : Port(type, portname, settings, interface)
44 if (interface->rtp_bridge)
46 p_s_sip_inst = interface->sip_inst;
47 memset(&p_s_delete, 0, sizeof(p_s_delete));
48 add_work(&p_s_delete, delete_event, this, 0);
51 memset(&p_s_rtp_fd, 0, sizeof(p_s_rtp_fd));
52 memset(&p_s_rtcp_fd, 0, sizeof(p_s_rtcp_fd));
53 memset(&p_s_rtp_sin_local, 0, sizeof(p_s_rtp_sin_local));
54 memset(&p_s_rtcp_sin_local, 0, sizeof(p_s_rtcp_sin_local));
55 memset(&p_s_rtp_sin_remote, 0, sizeof(p_s_rtp_sin_remote));
56 memset(&p_s_rtcp_sin_remote, 0, sizeof(p_s_rtcp_sin_remote));
58 p_s_rtp_ip_remote = 0;
59 p_s_rtp_port_local = 0;
60 p_s_rtp_port_remote = 0;
65 p_s_rtp_tx_action = 0;
68 memset(&p_s_loadtimer, 0, sizeof(p_s_loadtimer));
69 add_timer(&p_s_loadtimer, load_timer, this, 0);
72 PDEBUG(DEBUG_SIP, "Created new Psip(%s).\n", portname);
74 FATAL("No SIP instance for interface\n");
83 PDEBUG(DEBUG_SIP, "Destroyed SIP process(%s).\n", p_name);
85 del_timer(&p_s_loadtimer);
86 del_work(&p_s_delete);
91 static const char *media_type2name(uint8_t media_type) {
99 case MEDIA_TYPE_GSM_HR:
101 case MEDIA_TYPE_GSM_EFR:
110 static void sip_trace_header(class Psip *sip, const char *message, int direction)
112 /* init trace with given values */
115 sip?numberrize_callerinfo(sip->p_callerinfo.id, sip->p_callerinfo.ntype, options.national, options.international):NULL,
116 sip?sip->p_dialinginfo.id:NULL,
127 /* according to RFC 3550 */
129 #if __BYTE_ORDER == __LITTLE_ENDIAN
130 uint8_t csrc_count:4,
134 uint8_t payload_type:7,
136 #elif __BYTE_ORDER == __BIG_ENDIAN
147 } __attribute__((packed));
152 } __attribute__((packed));
154 #define RTP_VERSION 2
156 #define PAYLOAD_TYPE_ULAW 0
157 #define PAYLOAD_TYPE_ALAW 8
158 #define PAYLOAD_TYPE_GSM 3
160 /* decode an rtp frame */
161 static int rtp_decode(class Psip *psip, unsigned char *data, int len)
163 struct rtp_hdr *rtph = (struct rtp_hdr *)data;
164 struct rtp_x_hdr *rtpxh;
168 unsigned char *from, *to;
172 PDEBUG(DEBUG_SIP, "received RTP frame too short (len = %d)\n", len);
175 if (rtph->version != RTP_VERSION) {
176 PDEBUG(DEBUG_SIP, "received RTP version %d not supported.\n", rtph->version);
179 payload = data + sizeof(struct rtp_hdr) + (rtph->csrc_count << 2);
180 payload_len = len - sizeof(struct rtp_hdr) - (rtph->csrc_count << 2);
181 if (payload_len < 0) {
182 PDEBUG(DEBUG_SIP, "received RTP frame too short (len = %d, "
183 "csrc count = %d)\n", len, rtph->csrc_count);
186 if (rtph->extension) {
187 if (payload_len < (int)sizeof(struct rtp_x_hdr)) {
188 PDEBUG(DEBUG_SIP, "received RTP frame too short for "
189 "extension header\n");
192 rtpxh = (struct rtp_x_hdr *)payload;
193 x_len = ntohs(rtpxh->length) * 4 + sizeof(struct rtp_x_hdr);
195 payload_len -= x_len;
196 if (payload_len < 0) {
197 PDEBUG(DEBUG_SIP, "received RTP frame too short, "
198 "extension header exceeds frame length\n");
203 if (payload_len < 0) {
204 PDEBUG(DEBUG_SIP, "received RTP frame too short for "
208 payload_len -= payload[payload_len - 1];
209 if (payload_len < 0) {
210 PDEBUG(DEBUG_SIP, "received RTP frame with padding "
211 "greater than payload\n");
216 switch (rtph->payload_type) {
218 we only support alaw and ulaw!
219 case RTP_PT_GSM_FULL:
220 if (payload_len != 33) {
221 PDEBUG(DEBUG_SIP, "received RTP full rate frame with "
222 "payload length != 33 (len = %d)\n",
228 if (payload_len != 31) {
229 PDEBUG(DEBUG_SIP, "received RTP full rate frame with "
230 "payload length != 31 (len = %d)\n",
235 case RTP_PT_GSM_HALF:
236 if (payload_len != 14) {
237 PDEBUG(DEBUG_SIP, "received RTP half rate frame with "
238 "payload length != 14 (len = %d)\n",
244 case PAYLOAD_TYPE_ALAW:
245 if (options.law != 'a') {
246 PDEBUG(DEBUG_SIP, "received Alaw, but we don't do Alaw\n");
250 case PAYLOAD_TYPE_ULAW:
251 if (options.law == 'a') {
252 PDEBUG(DEBUG_SIP, "received Ulaw, but we don't do Ulaw\n");
257 PDEBUG(DEBUG_SIP, "received RTP frame with unknown payload "
258 "type %d\n", rtph->payload_type);
262 if (payload_len <= 0) {
263 PDEBUG(DEBUG_SIP, "received RTP payload is too small: %d\n", payload_len);
269 psip->record(payload, payload_len, 0); // from down
271 psip->tap(payload, payload_len, 0); // from down
276 if (psip->p_echotest) {
277 /* echo rtp data we just received */
278 psip->rtp_send_frame(from, n, (options.law=='a')?PAYLOAD_TYPE_ALAW:PAYLOAD_TYPE_ULAW);
282 *to++ = flip[*from++];
283 psip->bridge_tx(payload, payload_len);
288 static int rtp_sock_callback(struct lcr_fd *fd, unsigned int what, void *instance, int index)
290 class Psip *psip = (class Psip *) instance;
292 unsigned char buffer[256];
295 if ((what & LCR_FD_READ)) {
296 len = read(fd->fd, &buffer, sizeof(buffer));
298 PDEBUG(DEBUG_SIP, "read result=%d\n", len);
299 // psip->rtp_close();
300 // psip->rtp_shutdown();
303 if (psip->p_s_rtp_is_connected)
304 rc = rtp_decode(psip, buffer, len);
310 static int rtcp_sock_callback(struct lcr_fd *fd, unsigned int what, void *instance, int index)
312 // class Psip *psip = (class Psip *) instance;
314 unsigned char buffer[256];
316 if ((what & LCR_FD_READ)) {
317 len = read(fd->fd, &buffer, sizeof(buffer));
319 PDEBUG(DEBUG_SIP, "read result=%d\n", len);
320 // psip->rtp_close();
321 // psip->rtp_shutdown();
324 PDEBUG(DEBUG_SIP, "rtcp!\n");
330 #define RTP_PORT_BASE 30000
331 #define RTP_PORT_MAX 39998
332 static unsigned short next_udp_port = RTP_PORT_BASE;
334 static int rtp_sub_socket_bind(int fd, struct sockaddr_in *sin_local, uint32_t ip, uint16_t port)
337 socklen_t alen = sizeof(*sin_local);
339 sin_local->sin_family = AF_INET;
340 sin_local->sin_addr.s_addr = htonl(ip);
341 sin_local->sin_port = htons(port);
343 rc = bind(fd, (struct sockaddr *) sin_local, sizeof(*sin_local));
347 /* retrieve the address we actually bound to, in case we
348 * passed INADDR_ANY as IP address */
349 return getsockname(fd, (struct sockaddr *) sin_local, &alen);
352 static int rtp_sub_socket_connect(int fd, struct sockaddr_in *sin_local, struct sockaddr_in *sin_remote, uint32_t ip, uint16_t port)
355 socklen_t alen = sizeof(*sin_local);
357 sin_remote->sin_family = AF_INET;
358 sin_remote->sin_addr.s_addr = htonl(ip);
359 sin_remote->sin_port = htons(port);
361 rc = connect(fd, (struct sockaddr *) sin_remote, sizeof(*sin_remote));
363 PERROR("failed to connect to ip %08x port %d rc=%d\n", ip, port, rc);
367 return getsockname(fd, (struct sockaddr *) sin_local, &alen);
370 int Psip::rtp_open(void)
375 unsigned short start_port;
378 rc = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
384 register_fd(&p_s_rtp_fd, LCR_FD_READ, rtp_sock_callback, this, 0);
386 rc = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
392 register_fd(&p_s_rtcp_fd, LCR_FD_READ, rtcp_sock_callback, this, 0);
395 ip = htonl(INADDR_ANY);
397 start_port = next_udp_port;
399 rc = rtp_sub_socket_bind(p_s_rtp_fd.fd, &p_s_rtp_sin_local, ip, next_udp_port);
403 rc = rtp_sub_socket_bind(p_s_rtcp_fd.fd, &p_s_rtcp_sin_local, ip, next_udp_port + 1);
405 p_s_rtp_port_local = next_udp_port;
406 next_udp_port = (next_udp_port + 2 > RTP_PORT_MAX) ? RTP_PORT_BASE : next_udp_port + 2;
409 /* reopen rtp socket and try again with next udp port */
410 unregister_fd(&p_s_rtp_fd);
411 close(p_s_rtp_fd.fd);
413 rc2 = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
419 register_fd(&p_s_rtp_fd, LCR_FD_READ, rtp_sock_callback, this, 0);
422 next_udp_port = (next_udp_port + 2 > RTP_PORT_MAX) ? RTP_PORT_BASE : next_udp_port + 2;
423 if (next_udp_port == start_port)
425 /* we must use rc2, in order to preserve rc */
428 PDEBUG(DEBUG_SIP, "failed to find port\n");
432 p_s_rtp_ip_local = ntohl(p_s_rtp_sin_local.sin_addr.s_addr);
433 PDEBUG(DEBUG_SIP, "local ip %08x port %d\n", p_s_rtp_ip_local, p_s_rtp_port_local);
434 PDEBUG(DEBUG_SIP, "remote ip %08x port %d\n", p_s_rtp_ip_remote, p_s_rtp_port_remote);
436 return p_s_rtp_port_local;
439 int Psip::rtp_connect(void)
444 ia.s_addr = htonl(p_s_rtp_ip_remote);
445 PDEBUG(DEBUG_SIP, "rtp_connect(ip=%s, port=%u)\n", inet_ntoa(ia), p_s_rtp_port_remote);
447 rc = rtp_sub_socket_connect(p_s_rtp_fd.fd, &p_s_rtp_sin_local, &p_s_rtp_sin_remote, p_s_rtp_ip_remote, p_s_rtp_port_remote);
451 rc = rtp_sub_socket_connect(p_s_rtcp_fd.fd, &p_s_rtcp_sin_local, &p_s_rtcp_sin_remote, p_s_rtp_ip_remote, p_s_rtp_port_remote + 1);
455 p_s_rtp_ip_local = ntohl(p_s_rtp_sin_local.sin_addr.s_addr);
456 PDEBUG(DEBUG_SIP, "local ip %08x port %d\n", p_s_rtp_ip_local, p_s_rtp_port_local);
457 PDEBUG(DEBUG_SIP, "remote ip %08x port %d\n", p_s_rtp_ip_remote, p_s_rtp_port_remote);
458 p_s_rtp_is_connected = 1;
462 void Psip::rtp_close(void)
464 if (p_s_rtp_fd.fd > 0) {
465 unregister_fd(&p_s_rtp_fd);
466 close(p_s_rtp_fd.fd);
469 if (p_s_rtcp_fd.fd > 0) {
470 unregister_fd(&p_s_rtcp_fd);
471 close(p_s_rtcp_fd.fd);
474 if (p_s_rtp_is_connected) {
475 PDEBUG(DEBUG_SIP, "rtp closed\n");
476 p_s_rtp_is_connected = 0;
481 void tv_difference(struct timeval *diff, const struct timeval *from,
482 const struct timeval *__to)
484 struct timeval _to = *__to, *to = &_to;
486 if (to->tv_usec < from->tv_usec) {
488 to->tv_usec += 1000000;
491 diff->tv_usec = to->tv_usec - from->tv_usec;
492 diff->tv_sec = to->tv_sec - from->tv_sec;
495 /* encode and send a rtp frame */
496 int Psip::rtp_send_frame(unsigned char *data, unsigned int len, uint8_t payload_type)
498 struct rtp_hdr *rtph;
500 int duration; /* in samples */
501 unsigned char buffer[256];
505 record(data, len, 1); // from up
507 tap(data, len, 1); // from up
509 if (!p_s_rtp_is_connected) {
514 if (!p_s_rtp_tx_action) {
515 /* initialize sequences */
516 p_s_rtp_tx_action = 1;
517 p_s_rtp_tx_ssrc = rand();
518 p_s_rtp_tx_sequence = random();
519 p_s_rtp_tx_timestamp = random();
520 memset(&p_s_rtp_tx_last_tv, 0, sizeof(p_s_rtp_tx_last_tv));
523 switch (payload_type) {
525 we only support alaw and ulaw!
526 case RTP_PT_GSM_FULL:
534 case RTP_PT_GSM_HALF:
539 case PAYLOAD_TYPE_ALAW:
540 case PAYLOAD_TYPE_ULAW:
545 PERROR("unsupported message type %d\n", payload_type);
551 struct timeval tv, tv_diff;
552 long int usec_diff, frame_diff;
554 gettimeofday(&tv, NULL);
555 tv_difference(&tv_diff, &p_s_rtp_tx_last_tv, &tv);
556 p_s_rtp_tx_last_tv = tv;
558 usec_diff = tv_diff.tv_sec * 1000000 + tv_diff.tv_usec;
559 frame_diff = (usec_diff / 20000);
561 if (abs(frame_diff) > 1) {
562 long int frame_diff_excess = frame_diff - 1;
564 PDEBUG(DEBUG_SIP, "Correcting frame difference of %ld frames\n", frame_diff_excess);
565 p_s_rtp_tx_sequence += frame_diff_excess;
566 p_s_rtp_tx_timestamp += frame_diff_excess * duration;
571 rtph = (struct rtp_hdr *) buffer;
572 rtph->version = RTP_VERSION;
575 rtph->csrc_count = 0;
577 rtph->payload_type = payload_type;
578 rtph->sequence = htons(p_s_rtp_tx_sequence++);
579 rtph->timestamp = htonl(p_s_rtp_tx_timestamp);
580 p_s_rtp_tx_timestamp += duration;
581 rtph->ssrc = htonl(p_s_rtp_tx_ssrc);
582 memcpy(buffer + sizeof(struct rtp_hdr), data, payload_len);
584 if (p_s_rtp_fd.fd > 0) {
585 len = write(p_s_rtp_fd.fd, &buffer, sizeof(struct rtp_hdr) + payload_len);
586 if (len != sizeof(struct rtp_hdr) + payload_len) {
587 PDEBUG(DEBUG_SIP, "write result=%d\n", len);
597 /* receive from remote */
598 int Psip::bridge_rx(unsigned char *data, int len)
602 /* don't bridge, if tones are provided */
606 if ((ret = Port::bridge_rx(data, len)))
609 /* write to rx buffer */
611 p_s_rxdata[p_s_rxpos++] = flip[*data++];
612 if (p_s_rxpos == 160) {
615 /* transmit data via rtp */
616 rtp_send_frame(p_s_rxdata, 160, (options.law=='a')?PAYLOAD_TYPE_ALAW:PAYLOAD_TYPE_ULAW);
623 /* taken from freeswitch */
624 /* map sip responses to QSIG cause codes ala RFC4497 section 8.4.4 */
625 static int status2cause(int status)
629 return 16; //SWITCH_CAUSE_NORMAL_CLEARING;
635 return 21; //SWITCH_CAUSE_CALL_REJECTED;
637 return 1; //SWITCH_CAUSE_UNALLOCATED_NUMBER;
640 return 3; //SWITCH_CAUSE_NO_ROUTE_DESTINATION;
643 return 102; //SWITCH_CAUSE_RECOVERY_ON_TIMER_EXPIRE;
645 return 22; //SWITCH_CAUSE_NUMBER_CHANGED;
654 return 127; //SWITCH_CAUSE_INTERWORKING;
656 return 180; //SWITCH_CAUSE_NO_USER_RESPONSE;
661 return 41; //SWITCH_CAUSE_NORMAL_TEMPORARY_FAILURE;
664 return 17; //SWITCH_CAUSE_USER_BUSY;
666 return 28; //SWITCH_CAUSE_INVALID_NUMBER_FORMAT;
669 return 88; //SWITCH_CAUSE_INCOMPATIBLE_DESTINATION;
671 return 38; //SWITCH_CAUSE_NETWORK_OUT_OF_ORDER;
673 return 63; //SWITCH_CAUSE_SERVICE_UNAVAILABLE;
677 return 79; //SWITCH_CAUSE_SERVICE_NOT_IMPLEMENTED;
680 return 25; //SWITCH_CAUSE_EXCHANGE_ROUTING_ERROR;
682 return 31; //??? SWITCH_CAUSE_ORIGINATOR_CANCEL;
684 return 31; //SWITCH_CAUSE_NORMAL_UNSPECIFIED;
688 static int cause2status(int cause, int location, const char **st)
694 s = 404; *st = sip_404_Not_found;
697 s = 404; *st = sip_404_Not_found;
700 s = 404; *st = sip_404_Not_found;
703 s = 486; *st = sip_486_Busy_here;
706 s = 408; *st = sip_408_Request_timeout;
709 s = 480; *st = sip_480_Temporarily_unavailable;
712 s = 480; *st = sip_480_Temporarily_unavailable;
715 if (location == LOCATION_USER) {
716 s = 603; *st = sip_603_Decline;
718 s = 403; *st = sip_403_Forbidden;
722 //s = 301; *st = sip_301_Moved_permanently;
723 s = 410; *st = sip_410_Gone;
726 s = 410; *st = sip_410_Gone;
729 s = 502; *st = sip_502_Bad_gateway;
732 s = 484; *st = sip_484_Address_incomplete;
735 s = 501; *st = sip_501_Not_implemented;
738 s = 480; *st = sip_480_Temporarily_unavailable;
741 s = 503; *st = sip_503_Service_unavailable;
744 s = 503; *st = sip_503_Service_unavailable;
747 s = 503; *st = sip_503_Service_unavailable;
750 s = 503; *st = sip_503_Service_unavailable;
753 s = 503; *st = sip_503_Service_unavailable;
756 s = 403; *st = sip_403_Forbidden;
759 s = 403; *st = sip_403_Forbidden;
762 s = 503; *st = sip_503_Service_unavailable;
765 s = 488; *st = sip_488_Not_acceptable;
768 s = 501; *st = sip_501_Not_implemented;
771 s = 488; *st = sip_488_Not_acceptable;
774 s = 501; *st = sip_501_Not_implemented;
777 s = 403; *st = sip_403_Forbidden;
780 s = 503; *st = sip_503_Service_unavailable;
783 s = 504; *st = sip_504_Gateway_time_out;
786 s = 468; *st = sip_486_Busy_here;
793 * endpoint sends messages to the SIP port
796 int Psip::message_connect(unsigned int epoint_id, int message_id, union parameter *param)
800 struct lcr_msg *message;
802 unsigned char payload_type;
804 if (param->connectinfo.rtpinfo.port) {
805 PDEBUG(DEBUG_SIP, "RTP info given by remote, forward that\n");
807 media_type = param->connectinfo.rtpinfo.media_types[0];
808 payload_type = param->connectinfo.rtpinfo.payload_types[0];
809 p_s_rtp_ip_local = param->connectinfo.rtpinfo.ip;
810 p_s_rtp_port_local = param->connectinfo.rtpinfo.port;
811 PDEBUG(DEBUG_SIP, "payload type %d\n", payload_type);
812 PDEBUG(DEBUG_SIP, "local ip %08x port %d\n", p_s_rtp_ip_local, p_s_rtp_port_local);
813 PDEBUG(DEBUG_SIP, "remote ip %08x port %d\n", p_s_rtp_ip_remote, p_s_rtp_port_remote);
815 PDEBUG(DEBUG_SIP, "RTP info not given by remote, so we do our own RTP\n");
816 media_type = (options.law=='a') ? MEDIA_TYPE_ALAW : MEDIA_TYPE_ULAW;
817 payload_type = (options.law=='a') ? PAYLOAD_TYPE_ALAW : PAYLOAD_TYPE_ULAW;
818 /* open local RTP peer (if not bridging) */
819 if (!p_s_rtp_is_connected && rtp_connect() < 0) {
820 nua_cancel(p_s_handle, TAG_END());
821 nua_handle_destroy(p_s_handle);
823 sip_trace_header(this, "CANCEL", DIRECTION_OUT);
824 add_trace("reason", NULL, "failed to connect RTP/RTCP sockts");
826 message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
827 message->param.disconnectinfo.cause = 41;
828 message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
829 message_put(message);
830 new_state(PORT_STATE_RELEASE);
831 trigger_work(&p_s_delete);
836 ia.s_addr = htonl(p_s_rtp_ip_local);
840 "o=LCR-Sofia-SIP 0 0 IN IP4 %s\n"
844 "m=audio %d RTP/AVP %d\n"
845 "a=rtpmap:%d %s/8000\n"
846 , inet_ntoa(ia), inet_ntoa(ia), p_s_rtp_port_local, payload_type, payload_type, media_type2name(media_type));
847 PDEBUG(DEBUG_SIP, "Using SDP response: %s\n", sdp_str);
849 nua_respond(p_s_handle, SIP_200_OK,
850 NUTAG_MEDIA_ENABLE(0),
851 SIPTAG_CONTENT_TYPE_STR("application/sdp"),
852 SIPTAG_PAYLOAD_STR(sdp_str), TAG_END());
853 new_state(PORT_STATE_CONNECT);
854 sip_trace_header(this, "RESPOND", DIRECTION_OUT);
855 add_trace("respond", "value", "200 OK");
856 add_trace("reason", NULL, "call connected");
857 add_trace("rtp", "ip", "%s", inet_ntoa(ia));
858 add_trace("rtp", "port", "%d,%d", p_s_rtp_port_local, p_s_rtp_port_local + 1);
859 add_trace("rtp", "payload", "%s:%d", media_type2name(media_type), payload_type);
865 int Psip::message_release(unsigned int epoint_id, int message_id, union parameter *param)
867 struct lcr_msg *message;
868 char cause_str[128] = "";
869 int cause = param->disconnectinfo.cause;
870 int location = param->disconnectinfo.cause;
872 const char *status_text;
874 if (cause > 0 && cause <= 127) {
875 SPRINT(cause_str, "Q.850;cause=%d;text=\"%s\"", cause, isdn_cause[cause].english);
879 case PORT_STATE_OUT_SETUP:
880 case PORT_STATE_OUT_PROCEEDING:
881 case PORT_STATE_OUT_ALERTING:
882 PDEBUG(DEBUG_SIP, "RELEASE/DISCONNECT will cancel\n");
883 sip_trace_header(this, "CANCEL", DIRECTION_OUT);
885 add_trace("cause", "value", "%d", cause);
887 nua_cancel(p_s_handle, TAG_IF(cause_str[0], SIPTAG_REASON_STR(cause_str)), TAG_END());
889 case PORT_STATE_IN_SETUP:
890 case PORT_STATE_IN_PROCEEDING:
891 case PORT_STATE_IN_ALERTING:
892 PDEBUG(DEBUG_SIP, "RELEASE/DISCONNECT will respond\n");
893 status = cause2status(cause, location, &status_text);
894 sip_trace_header(this, "RESPOND", DIRECTION_OUT);
896 add_trace("cause", "value", "%d", cause);
897 add_trace("respond", "value", "%d %s", status, status_text);
899 nua_respond(p_s_handle, status, status_text, TAG_IF(cause_str[0], SIPTAG_REASON_STR(cause_str)), TAG_END());
900 nua_handle_destroy(p_s_handle);
902 trigger_work(&p_s_delete);
905 PDEBUG(DEBUG_SIP, "RELEASE/DISCONNECT will perform nua_bye\n");
906 sip_trace_header(this, "BYE", DIRECTION_OUT);
908 add_trace("cause", "value", "%d", cause);
910 nua_bye(p_s_handle, TAG_IF(cause_str[0], SIPTAG_REASON_STR(cause_str)), TAG_END());
913 if (message_id == MESSAGE_DISCONNECT) {
914 while(p_epointlist) {
915 message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
916 message->param.disconnectinfo.cause = CAUSE_NORMAL;
917 message->param.disconnectinfo.location = LOCATION_BEYOND;
918 message_put(message);
920 free_epointlist(p_epointlist);
924 new_state(PORT_STATE_RELEASE);
929 int Psip::message_setup(unsigned int epoint_id, int message_id, union parameter *param)
931 struct sip_inst *inst = (struct sip_inst *) p_s_sip_inst;
934 const char *local = inst->local_peer;
936 const char *remote = inst->remote_peer;
937 char sdp_str[512], pt_str[32];
939 struct epoint_list *epointlist;
940 sip_cseq_t *cseq = NULL;
941 struct lcr_msg *message;
942 int lcr_media = { (options.law=='a') ? MEDIA_TYPE_ALAW : MEDIA_TYPE_ULAW };
943 unsigned char lcr_payload = { (options.law=='a') ? PAYLOAD_TYPE_ALAW : PAYLOAD_TYPE_ULAW };
945 unsigned char *payload_types;
949 PDEBUG(DEBUG_SIP, "Doing Setup (inst %p)\n", inst);
951 memcpy(&p_dialinginfo, ¶m->setup.dialinginfo, sizeof(p_dialinginfo));
952 memcpy(&p_callerinfo, ¶m->setup.callerinfo, sizeof(p_callerinfo));
953 memcpy(&p_redirinfo, ¶m->setup.redirinfo, sizeof(p_redirinfo));
955 if (param->setup.rtpinfo.port) {
956 PDEBUG(DEBUG_SIP, "RTP info given by remote, forward that\n");
958 media_types = param->setup.rtpinfo.media_types;
959 payload_types = param->setup.rtpinfo.payload_types;
960 payloads = param->setup.rtpinfo.payloads;
961 p_s_rtp_ip_local = param->setup.rtpinfo.ip;
962 p_s_rtp_port_local = param->setup.rtpinfo.port;
963 PDEBUG(DEBUG_SIP, "local ip %08x port %d\n", p_s_rtp_ip_local, p_s_rtp_port_local);
964 PDEBUG(DEBUG_SIP, "remote ip %08x port %d\n", p_s_rtp_ip_remote, p_s_rtp_port_remote);
966 PDEBUG(DEBUG_SIP, "RTP info not given by remote, so we do our own RTP\n");
968 media_types = &lcr_media;
969 payload_types = &lcr_payload;
972 /* open local RTP peer (if not bridging) */
973 if (rtp_open() < 0) {
974 PERROR("Failed to open RTP sockets\n");
975 /* send release message to endpoit */
976 message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
977 message->param.disconnectinfo.cause = 41;
978 message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
979 message_put(message);
980 new_state(PORT_STATE_RELEASE);
981 trigger_work(&p_s_delete);
986 p_s_handle = nua_handle(inst->nua, NULL, TAG_END());
988 PERROR("Failed to create handle\n");
989 /* send release message to endpoit */
990 message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
991 message->param.disconnectinfo.cause = 41;
992 message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
993 message_put(message);
994 new_state(PORT_STATE_RELEASE);
995 trigger_work(&p_s_delete);
999 sip_trace_header(this, "NEW handle", DIRECTION_IN);
1000 add_trace("handle", "new", "0x%x", p_s_handle);
1003 if (!p_s_rtp_ip_local) {
1006 /* extract IP from local peer */
1007 SCPY(local_ip, local);
1008 p = strchr(local_ip, ':');
1011 PDEBUG(DEBUG_SIP, "RTP local IP not known, so we use our local SIP ip %s\n", local_ip);
1012 inet_pton(AF_INET, local_ip, &p_s_rtp_ip_local);
1013 p_s_rtp_ip_local = ntohl(p_s_rtp_ip_local);
1015 ia.s_addr = htonl(p_s_rtp_ip_local);
1018 "o=LCR-Sofia-SIP 0 0 IN IP4 %s\n"
1022 "m=audio %d RTP/AVP"
1023 , inet_ntoa(ia), inet_ntoa(ia), p_s_rtp_port_local);
1024 for (i = 0; i < payloads; i++) {
1025 SPRINT(pt_str, " %d", payload_types[i]);
1026 SCAT(sdp_str, pt_str);
1028 SCAT(sdp_str, "\n");
1029 for (i = 0; i < payloads; i++) {
1030 SPRINT(pt_str, "a=rtpmap:%d %s/8000\n", payload_types[i], media_type2name(media_types[i]));
1031 SCAT(sdp_str, pt_str);
1033 PDEBUG(DEBUG_SIP, "Using SDP for invite: %s\n", sdp_str);
1035 SPRINT(from, "sip:%s@%s", param->setup.callerinfo.id, local);
1036 SPRINT(to, "sip:%s@%s", param->setup.dialinginfo.id, remote);
1038 sip_trace_header(this, "INVITE", DIRECTION_OUT);
1039 add_trace("from", "uri", "%s", from);
1040 add_trace("to", "uri", "%s", to);
1041 add_trace("rtp", "ip", "%s", inet_ntoa(ia));
1042 add_trace("rtp", "port", "%d,%d", p_s_rtp_port_local, p_s_rtp_port_local + 1);
1043 for (i = 0; i < payloads; i++)
1044 add_trace("rtp", "payload", "%s:%d", media_type2name(media_types[i]), payload_types[i]);
1047 // cseq = sip_cseq_create(sip_home, 123, SIP_METHOD_INVITE);
1049 nua_invite(p_s_handle,
1050 TAG_IF(from[0], SIPTAG_FROM_STR(from)),
1051 TAG_IF(to[0], SIPTAG_TO_STR(to)),
1052 TAG_IF(cseq, SIPTAG_CSEQ(cseq)),
1053 NUTAG_MEDIA_ENABLE(0),
1054 SIPTAG_CONTENT_TYPE_STR("application/sdp"),
1055 SIPTAG_PAYLOAD_STR(sdp_str), TAG_END());
1056 new_state(PORT_STATE_OUT_SETUP);
1059 PDEBUG(DEBUG_SIP, "do overlap\n");
1060 new_state(PORT_STATE_OUT_OVERLAP);
1061 message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_OVERLAP);
1062 message_put(message);
1064 PDEBUG(DEBUG_SIP, "do proceeding\n");
1065 new_state(PORT_STATE_OUT_PROCEEDING);
1066 message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_PROCEEDING);
1067 message_put(message);
1070 /* attach only if not already */
1071 epointlist = p_epointlist;
1073 if (epointlist->epoint_id == epoint_id)
1075 epointlist = epointlist->next;
1078 epointlist_new(epoint_id);
1083 int Psip::message_notify(unsigned int epoint_id, int message_id, union parameter *param)
1085 // char sdp_str[256];
1086 // struct in_addr ia;
1088 switch (param->notifyinfo.notify) {
1089 case INFO_NOTIFY_REMOTE_HOLD:
1093 "o=LCR-Sofia-SIP 0 0 IN IP4 0.0.0.0\n"
1095 "c=IN IP4 0.0.0.0\n"
1098 PDEBUG(DEBUG_SIP, "Using SDP for hold: %s\n", sdp_str);
1099 nua_info(p_s_handle,
1100 // TAG_IF(from[0], SIPTAG_FROM_STR(from)),
1101 // TAG_IF(to[0], SIPTAG_TO_STR(to)),
1102 // TAG_IF(cseq, SIPTAG_CSEQ(cseq)),
1103 NUTAG_MEDIA_ENABLE(0),
1104 SIPTAG_CONTENT_TYPE_STR("application/sdp"),
1105 SIPTAG_PAYLOAD_STR(sdp_str), TAG_END());
1108 case INFO_NOTIFY_REMOTE_RETRIEVAL:
1110 ia.s_addr = htonl(p_s_rtp_ip_local);
1113 "o=LCR-Sofia-SIP 0 0 IN IP4 %s\n"
1117 "m=audio %d RTP/AVP %d\n"
1118 "a=rtpmap:%d %s/8000\n"
1119 , inet_ntoa(ia), inet_ntoa(ia), p_s_rtp_port_local, p_s_rtp_payload_type, p_s_rtp_payload_type, media_type2name(p_s_rtp_media_type));
1120 PDEBUG(DEBUG_SIP, "Using SDP for rertieve: %s\n", sdp_str);
1121 nua_info(p_s_handle,
1122 // TAG_IF(from[0], SIPTAG_FROM_STR(from)),
1123 // TAG_IF(to[0], SIPTAG_TO_STR(to)),
1124 // TAG_IF(cseq, SIPTAG_CSEQ(cseq)),
1125 NUTAG_MEDIA_ENABLE(0),
1126 SIPTAG_CONTENT_TYPE_STR("application/sdp"),
1127 SIPTAG_PAYLOAD_STR(sdp_str), TAG_END());
1135 int Psip::message_dtmf(unsigned int epoint_id, int message_id, union parameter *param)
1139 /* prepare DTMF info payload */
1145 /* start invite to handle DTMF */
1146 nua_info(p_s_handle,
1147 NUTAG_MEDIA_ENABLE(0),
1148 SIPTAG_CONTENT_TYPE_STR("application/dtmf-relay"),
1149 SIPTAG_PAYLOAD_STR(dtmf_str), TAG_END());
1154 /* NOTE: incomplete and not working */
1155 int Psip::message_information(unsigned int epoint_id, int message_id, union parameter *param)
1159 /* prepare DTMF info payload */
1163 , param->information.id);
1165 /* start invite to handle DTMF */
1166 nua_info(p_s_handle,
1167 NUTAG_MEDIA_ENABLE(0),
1168 SIPTAG_CONTENT_TYPE_STR("application/dtmf-relay"),
1169 SIPTAG_PAYLOAD_STR(dtmf_str), TAG_END());
1174 int Psip::message_epoint(unsigned int epoint_id, int message_id, union parameter *param)
1176 if (Port::message_epoint(epoint_id, message_id, param))
1179 switch(message_id) {
1180 case MESSAGE_ALERTING: /* call is ringing on LCR side */
1181 if (p_state != PORT_STATE_IN_SETUP
1182 && p_state != PORT_STATE_IN_PROCEEDING)
1184 nua_respond(p_s_handle, SIP_180_RINGING, TAG_END());
1185 sip_trace_header(this, "RESPOND", DIRECTION_OUT);
1186 add_trace("respond", "value", "180 Ringing");
1188 new_state(PORT_STATE_IN_ALERTING);
1191 case MESSAGE_CONNECT: /* call is connected on LCR side */
1192 if (p_state != PORT_STATE_IN_SETUP
1193 && p_state != PORT_STATE_IN_PROCEEDING
1194 && p_state != PORT_STATE_IN_ALERTING)
1196 message_connect(epoint_id, message_id, param);
1199 case MESSAGE_DISCONNECT: /* call has been disconnected */
1200 case MESSAGE_RELEASE: /* call has been released */
1201 message_release(epoint_id, message_id, param);
1204 case MESSAGE_SETUP: /* dial-out command received from epoint */
1205 message_setup(epoint_id, message_id, param);
1208 case MESSAGE_INFORMATION: /* overlap dialing */
1209 if (p_state != PORT_STATE_OUT_OVERLAP)
1211 message_information(epoint_id, message_id, param);
1214 case MESSAGE_DTMF: /* DTMF info to be transmitted via INFO transaction */
1215 if (p_state == PORT_STATE_CONNECT)
1216 message_dtmf(epoint_id, message_id, param);
1217 case MESSAGE_NOTIFY: /* notification about remote hold/retrieve */
1218 if (p_state == PORT_STATE_CONNECT)
1219 message_notify(epoint_id, message_id, param);
1223 PDEBUG(DEBUG_SIP, "PORT(%s) SP port with (caller id %s) received an unsupported message: %d\n", p_name, p_callerinfo.id, message_id);
1229 int Psip::parse_sdp(sip_t const *sip, unsigned int *ip, unsigned short *port, uint8_t *payload_types, int *media_types, int *payloads, int max_payloads)
1233 if (!sip->sip_payload) {
1234 PDEBUG(DEBUG_SIP, "no payload given\n");
1238 sdp_parser_t *parser;
1241 sdp_attribute_t *attr;
1243 sdp_connection_t *conn;
1245 PDEBUG(DEBUG_SIP, "payload given: %s\n", sip->sip_payload->pl_data);
1247 parser = sdp_parse(NULL, sip->sip_payload->pl_data, (int) strlen(sip->sip_payload->pl_data), 0);
1251 if (!(sdp = sdp_session(parser))) {
1252 sdp_parser_free(parser);
1255 for (m = sdp->sdp_media; m; m = m->m_next) {
1256 if (m->m_proto != sdp_proto_rtp)
1258 if (m->m_type != sdp_media_audio)
1260 PDEBUG(DEBUG_SIP, "RTP port:'%u'\n", m->m_port);
1262 for (attr = m->m_attributes; attr; attr = attr->a_next) {
1263 PDEBUG(DEBUG_SIP, "ATTR: name:'%s' value='%s'\n", attr->a_name, attr->a_value);
1265 if (m->m_connections) {
1266 conn = m->m_connections;
1267 PDEBUG(DEBUG_SIP, "CONN: address:'%s'\n", conn->c_address);
1268 inet_pton(AF_INET, conn->c_address, ip);
1269 *ip = ntohl(p_s_rtp_ip_remote);
1271 char *p = sip->sip_payload->pl_data;
1274 PDEBUG(DEBUG_SIP, "sofia cannot find connection tag, so we try ourself\n");
1275 p = strstr(p, "c=IN IP4 ");
1277 PDEBUG(DEBUG_SIP, "missing c-tag with internet address\n");
1278 sdp_parser_free(parser);
1282 if ((p = strchr(addr, '\n'))) *p = '\0';
1283 if ((p = strchr(addr, '\r'))) *p = '\0';
1284 PDEBUG(DEBUG_SIP, "CONN: address:'%s'\n", addr);
1285 inet_pton(AF_INET, addr, ip);
1286 *ip = ntohl(p_s_rtp_ip_remote);
1288 for (map = m->m_rtpmaps; map; map = map->rm_next) {
1291 PDEBUG(DEBUG_SIP, "RTPMAP: coding:'%s' rate='%d' pt='%d'\n", map->rm_encoding, map->rm_rate, map->rm_pt);
1292 /* append to payload list, if there is space */
1293 add_trace("rtp", "payload", "%s:%d", map->rm_encoding, map->rm_pt);
1294 if (map->rm_pt == PAYLOAD_TYPE_ALAW)
1295 media_type = MEDIA_TYPE_ALAW;
1296 else if (map->rm_pt == PAYLOAD_TYPE_ULAW)
1297 media_type = MEDIA_TYPE_ULAW;
1298 else if (map->rm_pt == PAYLOAD_TYPE_GSM)
1299 media_type = MEDIA_TYPE_GSM;
1300 else if (!strcmp(map->rm_encoding, "GSM-EFR"))
1301 media_type = MEDIA_TYPE_GSM_EFR;
1302 else if (!strcmp(map->rm_encoding, "AMR"))
1303 media_type = MEDIA_TYPE_AMR;
1304 else if (!strcmp(map->rm_encoding, "GSM-HR"))
1305 media_type = MEDIA_TYPE_GSM_HR;
1306 if (media_type && *payloads <= max_payloads) {
1307 *payload_types++ = map->rm_pt;
1308 *media_types++ = media_type;
1314 sdp_parser_free(parser);
1319 void Psip::i_invite(int status, char const *phrase, nua_t *nua, nua_magic_t *magic, nua_handle_t *nh, nua_hmagic_t *hmagic, sip_t const *sip, tagi_t tagss[])
1321 struct sip_inst *inst = (struct sip_inst *) p_s_sip_inst;
1322 const char *from = "", *to = "", *name = "";
1325 class Endpoint *epoint;
1326 struct lcr_msg *message;
1327 struct interface *interface;
1328 int media_types[32];
1329 uint8_t payload_types[32];
1333 interface = getinterfacebyname(inst->interface_name);
1335 PERROR("Cannot find interface %s.\n", inst->interface_name);
1339 if (sip->sip_from) {
1340 if (sip->sip_from->a_url)
1341 from = sip->sip_from->a_url->url_user;
1342 if (sip->sip_from->a_display) {
1343 name = sip->sip_from->a_display;
1344 if (!strncmp(name, "\"IMSI", 5)) {
1345 strncpy(imsi, name + 5, 15);
1352 if (sip->sip_to->a_url)
1353 to = sip->sip_to->a_url->url_user;
1355 PDEBUG(DEBUG_SIP, "invite received (%s->%s)\n", from, to);
1357 sip_trace_header(this, "Payload received", DIRECTION_NONE);
1358 ret = parse_sdp(sip, &p_s_rtp_ip_remote, &p_s_rtp_port_remote, payload_types, media_types, &payloads, sizeof(payload_types));
1360 /* if no RTP bridge, we must support LAW codec, otherwise we forward what we have */
1361 if (!p_s_rtp_bridge) {
1364 /* check if supported payload type exists */
1365 for (i = 0; i < payloads; i++) {
1366 if (media_types[i] == ((options.law=='a') ? MEDIA_TYPE_ALAW : MEDIA_TYPE_ULAW))
1369 if (i == payloads) {
1370 add_trace("error", NULL, "Expected LAW payload type (not bridged)");
1378 nua_respond(nh, SIP_400_BAD_REQUEST, TAG_END());
1380 nua_respond(nh, SIP_415_UNSUPPORTED_MEDIA, TAG_END());
1381 nua_handle_destroy(nh);
1383 sip_trace_header(this, "RESPOND", DIRECTION_OUT);
1385 add_trace("respond", "value", "415 Unsupported Media");
1387 add_trace("respond", "value", "400 Bad Request");
1388 add_trace("reason", NULL, "offered codec does not match");
1390 new_state(PORT_STATE_RELEASE);
1391 trigger_work(&p_s_delete);
1395 /* open local RTP peer (if not bridging) */
1396 if (!p_s_rtp_bridge && rtp_open() < 0) {
1397 nua_respond(nh, SIP_500_INTERNAL_SERVER_ERROR, TAG_END());
1398 nua_handle_destroy(nh);
1400 sip_trace_header(this, "RESPOND", DIRECTION_OUT);
1401 add_trace("respond", "value", "500 Internal Server Error");
1402 add_trace("reason", NULL, "failed to open RTP/RTCP sockts");
1404 new_state(PORT_STATE_RELEASE);
1405 trigger_work(&p_s_delete);
1410 sip_trace_header(this, "NEW handle", DIRECTION_IN);
1411 add_trace("handle", "new", "0x%x", nh);
1415 sip_trace_header(this, "INVITE", DIRECTION_IN);
1416 add_trace("rtp", "port", "%d", p_s_rtp_port_remote);
1417 /* caller information */
1419 p_callerinfo.present = INFO_PRESENT_NOTAVAIL;
1420 p_callerinfo.ntype = INFO_NTYPE_NOTPRESENT;
1421 add_trace("calling", "present", "unavailable");
1423 p_callerinfo.present = INFO_PRESENT_ALLOWED;
1424 add_trace("calling", "present", "allowed");
1425 p_callerinfo.screen = INFO_SCREEN_NETWORK;
1426 p_callerinfo.ntype = INFO_NTYPE_UNKNOWN;
1427 SCPY(p_callerinfo.id, from);
1428 add_trace("calling", "number", "%s", from);
1429 SCPY(p_callerinfo.name, name);
1431 add_trace("calling", "name", "%s", name);
1432 SCPY(p_callerinfo.imsi, imsi);
1434 add_trace("calling", "imsi", "%s", imsi);
1436 SCPY(p_callerinfo.interface, inst->interface_name);
1437 /* dialing information */
1439 p_dialinginfo.ntype = INFO_NTYPE_UNKNOWN;
1440 SCAT(p_dialinginfo.id, to);
1441 add_trace("dialing", "number", "%s", to);
1444 /* bearer capability */
1445 p_capainfo.bearer_capa = INFO_BC_SPEECH;
1446 p_capainfo.bearer_info1 = (options.law=='a')?3:2;
1447 p_capainfo.bearer_mode = INFO_BMODE_CIRCUIT;
1448 add_trace("bearer", "capa", "speech");
1449 add_trace("bearer", "mode", "circuit");
1450 /* if packet mode works some day, see dss1.cpp for conditions */
1451 p_capainfo.source_mode = B_MODE_TRANSPARENT;
1455 /* create endpoint */
1457 FATAL("Incoming call but already got an endpoint.\n");
1458 if (!(epoint = new Endpoint(p_serial, 0)))
1459 FATAL("No memory for Endpoint instance\n");
1460 epoint->ep_app = new_endpointapp(epoint, 0, interface->app); //incoming
1461 epointlist_new(epoint->ep_serial);
1463 #ifdef NUTAG_AUTO100
1464 /* send trying (proceeding) */
1465 nua_respond(nh, SIP_100_TRYING, TAG_END());
1466 sip_trace_header(this, "RESPOND", DIRECTION_OUT);
1467 add_trace("respond", "value", "100 Trying");
1471 new_state(PORT_STATE_IN_PROCEEDING);
1473 /* send setup message to endpoit */
1474 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_SETUP);
1475 message->param.setup.port_type = p_type;
1476 // message->param.setup.dtmf = 0;
1477 memcpy(&message->param.setup.dialinginfo, &p_dialinginfo, sizeof(struct dialing_info));
1478 memcpy(&message->param.setup.callerinfo, &p_callerinfo, sizeof(struct caller_info));
1479 memcpy(&message->param.setup.capainfo, &p_capainfo, sizeof(struct capa_info));
1480 // SCPY((char *)message->param.setup.useruser.data, useruser.info);
1481 // message->param.setup.useruser.len = strlen(mncc->useruser.info);
1482 // message->param.setup.useruser.protocol = mncc->useruser.proto;
1483 if (p_s_rtp_bridge) {
1486 PDEBUG(DEBUG_SIP, "sending setup with RTP info\n");
1487 message->param.setup.rtpinfo.ip = p_s_rtp_ip_remote;
1488 message->param.setup.rtpinfo.port = p_s_rtp_port_remote;
1489 /* add codecs to setup message */
1490 for (i = 0; i < payloads; i++) {
1491 message->param.setup.rtpinfo.media_types[i] = media_types[i];
1492 message->param.setup.rtpinfo.payload_types[i] = payload_types[i];
1493 if (i == sizeof(message->param.setup.rtpinfo.payload_types))
1496 message->param.setup.rtpinfo.payloads = i;
1498 message_put(message);
1500 /* send progress, if tones are available and if we don't bridge */
1501 if (!p_s_rtp_bridge && interface->is_tones == IS_YES) {
1504 unsigned char payload_type;
1506 PDEBUG(DEBUG_SIP, "Connecting audio, since we have tones available\n");
1507 media_type = (options.law=='a') ? MEDIA_TYPE_ALAW : MEDIA_TYPE_ULAW;
1508 payload_type = (options.law=='a') ? PAYLOAD_TYPE_ALAW : PAYLOAD_TYPE_ULAW;
1509 /* open local RTP peer (if not bridging) */
1510 if (rtp_connect() < 0) {
1511 nua_respond(nh, SIP_500_INTERNAL_SERVER_ERROR, TAG_END());
1512 nua_handle_destroy(nh);
1514 sip_trace_header(this, "RESPOND", DIRECTION_OUT);
1515 add_trace("respond", "value", "500 Internal Server Error");
1516 add_trace("reason", NULL, "failed to connect RTP/RTCP sockts");
1518 new_state(PORT_STATE_RELEASE);
1519 trigger_work(&p_s_delete);
1520 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_RELEASE);
1521 message->param.disconnectinfo.cause = 41;
1522 message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
1523 message_put(message);
1524 new_state(PORT_STATE_RELEASE);
1525 trigger_work(&p_s_delete);
1529 ia.s_addr = htonl(p_s_rtp_ip_local);
1533 "o=LCR-Sofia-SIP 0 0 IN IP4 %s\n"
1537 "m=audio %d RTP/AVP %d\n"
1538 "a=rtpmap:%d %s/8000\n"
1539 , inet_ntoa(ia), inet_ntoa(ia), p_s_rtp_port_local, payload_type, payload_type, media_type2name(media_type));
1540 PDEBUG(DEBUG_SIP, "Using SDP response: %s\n", sdp_str);
1542 nua_respond(p_s_handle, SIP_183_SESSION_PROGRESS,
1543 NUTAG_MEDIA_ENABLE(0),
1544 SIPTAG_CONTENT_TYPE_STR("application/sdp"),
1545 SIPTAG_PAYLOAD_STR(sdp_str), TAG_END());
1546 sip_trace_header(this, "RESPOND", DIRECTION_OUT);
1547 add_trace("respond", "value", "183 SESSION PROGRESS");
1548 add_trace("reason", NULL, "audio available");
1549 add_trace("rtp", "ip", "%s", inet_ntoa(ia));
1550 add_trace("rtp", "port", "%d,%d", p_s_rtp_port_local, p_s_rtp_port_local + 1);
1551 add_trace("rtp", "payload", "%s:%d", media_type2name(media_type), payload_type);
1556 void Psip::i_bye(int status, char const *phrase, nua_t *nua, nua_magic_t *magic, nua_handle_t *nh, nua_hmagic_t *hmagic, sip_t const *sip, tagi_t tagss[])
1558 struct lcr_msg *message;
1561 PDEBUG(DEBUG_SIP, "bye received\n");
1563 sip_trace_header(this, "BYE", DIRECTION_IN);
1564 if (sip->sip_reason && sip->sip_reason->re_protocol && !strcasecmp(sip->sip_reason->re_protocol, "Q.850") && sip->sip_reason->re_cause) {
1565 cause = atoi(sip->sip_reason->re_cause);
1566 add_trace("cause", "value", "%d", cause);
1570 // let stack do bye automaticall, since it will not accept our response for some reason
1571 // nua_respond(nh, SIP_200_OK, TAG_END());
1572 sip_trace_header(this, "RESPOND", DIRECTION_OUT);
1573 add_trace("respond", "value", "200 OK");
1575 // nua_handle_destroy(nh);
1580 while(p_epointlist) {
1581 /* send setup message to endpoit */
1582 message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
1583 message->param.disconnectinfo.cause = cause ? : 16;
1584 message->param.disconnectinfo.location = LOCATION_BEYOND;
1585 message_put(message);
1587 free_epointlist(p_epointlist);
1589 new_state(PORT_STATE_RELEASE);
1590 trigger_work(&p_s_delete);
1593 void Psip::i_cancel(int status, char const *phrase, nua_t *nua, nua_magic_t *magic, nua_handle_t *nh, nua_hmagic_t *hmagic, sip_t const *sip, tagi_t tagss[])
1595 struct lcr_msg *message;
1597 PDEBUG(DEBUG_SIP, "cancel received\n");
1599 sip_trace_header(this, "CANCEL", DIRECTION_IN);
1602 nua_handle_destroy(nh);
1607 while(p_epointlist) {
1608 /* send setup message to endpoit */
1609 message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
1610 message->param.disconnectinfo.cause = 16;
1611 message->param.disconnectinfo.location = LOCATION_BEYOND;
1612 message_put(message);
1614 free_epointlist(p_epointlist);
1616 new_state(PORT_STATE_RELEASE);
1617 trigger_work(&p_s_delete);
1620 void Psip::r_bye(int status, char const *phrase, nua_t *nua, nua_magic_t *magic, nua_handle_t *nh, nua_hmagic_t *hmagic, sip_t const *sip, tagi_t tagss[])
1622 PDEBUG(DEBUG_SIP, "bye response received\n");
1624 nua_handle_destroy(nh);
1629 trigger_work(&p_s_delete);
1632 void Psip::r_cancel(int status, char const *phrase, nua_t *nua, nua_magic_t *magic, nua_handle_t *nh, nua_hmagic_t *hmagic, sip_t const *sip, tagi_t tagss[])
1634 PDEBUG(DEBUG_SIP, "cancel response received\n");
1636 nua_handle_destroy(nh);
1641 trigger_work(&p_s_delete);
1644 void Psip::r_invite(int status, char const *phrase, nua_t *nua, nua_magic_t *magic, nua_handle_t *nh, nua_hmagic_t *hmagic, sip_t const *sip, tagi_t tagss[])
1646 struct lcr_msg *message;
1647 int cause = 0, location = 0;
1648 int media_types[32];
1649 uint8_t payload_types[32];
1652 PDEBUG(DEBUG_SIP, "response to invite received (status = %d)\n", status);
1654 sip_trace_header(this, "RESPOND", DIRECTION_OUT);
1655 add_trace("respond", "value", "%d", status);
1659 if (status == 183 || (status >= 200 && status <= 299)) {
1662 sip_trace_header(this, "Payload received", DIRECTION_NONE);
1663 ret = parse_sdp(sip, &p_s_rtp_ip_remote, &p_s_rtp_port_remote, payload_types, media_types, &payloads, sizeof(payload_types));
1667 else if (!p_s_rtp_bridge) {
1668 if (media_types[0] != ((options.law=='a') ? MEDIA_TYPE_ALAW : MEDIA_TYPE_ULAW)) {
1669 add_trace("error", NULL, "Expected LAW payload type (not bridged)");
1676 nua_cancel(nh, TAG_END());
1677 sip_trace_header(this, "CANCEL", DIRECTION_OUT);
1678 add_trace("reason", NULL, "accepted codec does not match");
1681 location = LOCATION_PRIVATE_LOCAL;
1682 goto release_with_cause;
1685 /* connect to remote RTP (if not bridging) */
1686 if (!p_s_rtp_bridge && rtp_connect() < 0) {
1687 nua_cancel(nh, TAG_END());
1688 sip_trace_header(this, "CANCEL", DIRECTION_OUT);
1689 add_trace("reason", NULL, "failed to open RTP/RTCP sockts");
1692 location = LOCATION_PRIVATE_LOCAL;
1693 goto release_with_cause;
1701 PDEBUG(DEBUG_SIP, "do proceeding\n");
1702 new_state(PORT_STATE_OUT_PROCEEDING);
1703 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_PROCEEDING);
1704 message_put(message);
1708 PDEBUG(DEBUG_SIP, "do alerting\n");
1709 new_state(PORT_STATE_OUT_ALERTING);
1710 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_ALERTING);
1711 message_put(message);
1714 PDEBUG(DEBUG_SIP, "do progress\n");
1715 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_PROGRESS);
1716 message->param.progressinfo.progress = 8;
1717 message->param.progressinfo.location = 10;
1718 if (p_s_rtp_bridge) {
1719 message->param.progressinfo.rtpinfo.ip = p_s_rtp_ip_remote;
1720 message->param.progressinfo.rtpinfo.port = p_s_rtp_port_remote;
1721 message->param.progressinfo.rtpinfo.media_types[0] = media_types[0];
1722 message->param.progressinfo.rtpinfo.payload_types[0] = payload_types[0];
1723 message->param.progressinfo.rtpinfo.payloads = 1;
1725 message_put(message);
1728 if (status < 100 || status > 199)
1730 PDEBUG(DEBUG_SIP, "skipping 1xx message\n");
1736 if (status >= 200 && status <= 299) {
1737 PDEBUG(DEBUG_SIP, "do connect\n");
1738 nua_ack(nh, TAG_END());
1739 new_state(PORT_STATE_CONNECT);
1740 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_CONNECT);
1741 if (p_s_rtp_bridge) {
1742 message->param.connectinfo.rtpinfo.ip = p_s_rtp_ip_remote;
1743 message->param.connectinfo.rtpinfo.port = p_s_rtp_port_remote;
1744 message->param.connectinfo.rtpinfo.media_types[0] = media_types[0];
1745 message->param.connectinfo.rtpinfo.payload_types[0] = payload_types[0];
1746 message->param.connectinfo.rtpinfo.payloads = 1;
1748 message_put(message);
1751 cause = status2cause(status);
1752 location = LOCATION_BEYOND;
1755 PDEBUG(DEBUG_SIP, "do release (cause %d)\n", cause);
1757 while(p_epointlist) {
1758 /* send setup message to endpoit */
1759 message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
1760 message->param.disconnectinfo.cause = cause;
1761 message->param.disconnectinfo.location = location;
1762 message_put(message);
1764 free_epointlist(p_epointlist);
1767 new_state(PORT_STATE_RELEASE);
1771 trigger_work(&p_s_delete);
1774 static void sip_callback(nua_event_t event, int status, char const *phrase, nua_t *nua, nua_magic_t *magic, nua_handle_t *nh, nua_hmagic_t *hmagic, sip_t const *sip, tagi_t tags[])
1776 struct sip_inst *inst = (struct sip_inst *) magic;
1778 class Psip *psip = NULL;
1780 PDEBUG(DEBUG_SIP, "Event %d from stack received (handle=%p)\n", event, nh);
1784 /* create or find port instance */
1785 if (event == nua_i_invite)
1788 struct interface *interface = interface_first;
1790 /* create call instance */
1791 SPRINT(name, "%s-%d-in", inst->interface_name, 0);
1793 if (!strcmp(interface->name, inst->interface_name))
1795 interface = interface->next;
1798 PERROR("Cannot find interface %s.\n", inst->interface_name);
1801 if (!(psip = new Psip(PORT_TYPE_SIP_IN, name, NULL, interface)))
1802 FATAL("Cannot create Port instance.\n");
1806 if ((port->p_type & PORT_CLASS_mISDN_MASK) == PORT_CLASS_SIP) {
1807 psip = (class Psip *)port;
1808 if (psip->p_s_handle == nh) {
1816 PERROR("no SIP Port found for handel %p\n", nh);
1817 nua_respond(nh, SIP_500_INTERNAL_SERVER_ERROR, TAG_END());
1818 nua_handle_destroy(nh);
1823 case nua_r_set_params:
1824 PDEBUG(DEBUG_SIP, "setparam response\n");
1827 PDEBUG(DEBUG_SIP, "error received\n");
1830 PDEBUG(DEBUG_SIP, "state change received\n");
1832 case nua_i_register:
1833 PDEBUG(DEBUG_SIP, "register received\n");
1836 psip->i_invite(status, phrase, nua, magic, nh, hmagic, sip, tags);
1839 PDEBUG(DEBUG_SIP, "ack received\n");
1842 PDEBUG(DEBUG_SIP, "active received\n");
1845 psip->i_bye(status, phrase, nua, magic, nh, hmagic, sip, tags);
1848 psip->i_cancel(status, phrase, nua, magic, nh, hmagic, sip, tags);
1851 psip->r_bye(status, phrase, nua, magic, nh, hmagic, sip, tags);
1854 psip->r_cancel(status, phrase, nua, magic, nh, hmagic, sip, tags);
1857 psip->r_invite(status, phrase, nua, magic, nh, hmagic, sip, tags);
1859 case nua_i_terminated:
1860 PDEBUG(DEBUG_SIP, "terminated received\n");
1863 PDEBUG(DEBUG_SIP, "Event %d not handled\n", event);
1867 /* received shutdown due to termination of RTP */
1868 void Psip::rtp_shutdown(void)
1870 struct lcr_msg *message;
1872 PDEBUG(DEBUG_SIP, "RTP stream terminated\n");
1874 sip_trace_header(this, "RTP terminated", DIRECTION_IN);
1877 nua_handle_destroy(p_s_handle);
1880 while(p_epointlist) {
1881 /* send setup message to endpoit */
1882 message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
1883 message->param.disconnectinfo.cause = 16;
1884 message->param.disconnectinfo.location = LOCATION_BEYOND;
1885 message_put(message);
1887 free_epointlist(p_epointlist);
1889 new_state(PORT_STATE_RELEASE);
1890 trigger_work(&p_s_delete);
1893 int sip_init_inst(struct interface *interface)
1895 struct sip_inst *inst = (struct sip_inst *) MALLOC(sizeof(*inst));
1898 interface->sip_inst = inst;
1899 SCPY(inst->interface_name, interface->name);
1900 SCPY(inst->local_peer, interface->sip_local_peer);
1901 SCPY(inst->remote_peer, interface->sip_remote_peer);
1903 /* init root object */
1904 inst->root = su_root_create(inst);
1906 PERROR("Failed to create SIP root\n");
1907 sip_exit_inst(interface);
1911 SPRINT(local, "sip:%s",inst->local_peer);
1912 if (!strchr(inst->local_peer, ':'))
1913 SCAT(local, ":5060");
1914 inst->nua = nua_create(inst->root, sip_callback, inst, NUTAG_URL(local), TAG_END());
1916 PERROR("Failed to create SIP stack object\n");
1917 sip_exit_inst(interface);
1920 nua_set_params(inst->nua,
1921 SIPTAG_ALLOW_STR("INVITE,ACK,BYE,CANCEL,OPTIONS,NOTIFY,INFO"),
1922 NUTAG_APPL_METHOD("INVITE"),
1923 NUTAG_APPL_METHOD("ACK"),
1924 // NUTAG_APPL_METHOD("BYE"), /* we must reply to BYE */
1925 NUTAG_APPL_METHOD("CANCEL"),
1926 NUTAG_APPL_METHOD("OPTIONS"),
1927 NUTAG_APPL_METHOD("NOTIFY"),
1928 NUTAG_APPL_METHOD("INFO"),
1930 #ifdef NUTAG_AUTO100
1934 NUTAG_AUTOANSWER(0),
1937 PDEBUG(DEBUG_SIP, "SIP interface created (inst=%p)\n", inst);
1939 any_sip_interface = 1;
1944 void sip_exit_inst(struct interface *interface)
1946 struct sip_inst *inst = (struct sip_inst *) interface->sip_inst;
1951 su_root_destroy(inst->root);
1953 nua_destroy(inst->nua);
1955 FREE(inst, sizeof(*inst));
1956 interface->sip_inst = NULL;
1958 PDEBUG(DEBUG_SIP, "SIP interface removed\n");
1960 /* check if there is any other SIP interface left */
1961 interface = interface_first;
1963 if (interface->sip_inst)
1965 interface = interface->next;
1968 any_sip_interface = 0;
1971 extern su_log_t su_log_default[];
1972 extern su_log_t nua_log[];
1973 //extern su_log_t soa_log[];
1979 /* init SOFIA lib */
1981 su_home_init(sip_home);
1983 if (options.deb & DEBUG_SIP) {
1984 su_log_set_level(su_log_default, 9);
1985 su_log_set_level(nua_log, 9);
1986 //su_log_set_level(soa_log, 9);
1989 for (i = 0; i < 256; i++)
1990 flip[i] = ((i & 1) << 7) + ((i & 2) << 5) + ((i & 4) << 3) + ((i & 8) << 1) + ((i & 16) >> 1) + ((i & 32) >> 3) + ((i & 64) >> 5) + ((i & 128) >> 7);
1992 PDEBUG(DEBUG_SIP, "SIP globals initialized\n");
1999 su_home_deinit(sip_home);
2002 PDEBUG(DEBUG_SIP, "SIP globals de-initialized\n");
2005 void sip_handle(void)
2007 struct interface *interface = interface_first;
2008 struct sip_inst *inst;
2011 if (interface->sip_inst) {
2012 inst = (struct sip_inst *) interface->sip_inst;
2013 su_root_step(inst->root, 0);
2015 interface = interface->next;
2019 /* deletes when back in event loop */
2020 static int delete_event(struct lcr_work *work, void *instance, int index)
2022 class Psip *psip = (class Psip *)instance;
2031 * generate audio, if no data is received from bridge
2034 void Psip::set_tone(const char *dir, const char *tone)
2036 Port::set_tone(dir, tone);
2041 void Psip::update_load(void)
2043 /* don't trigger load event if event already active */
2044 if (p_s_loadtimer.active)
2047 /* don't start timer if ... */
2048 if (!p_tone_name[0])
2051 p_s_next_tv_sec = 0;
2052 schedule_timer(&p_s_loadtimer, 0, 0); /* no delay the first time */
2055 static int load_timer(struct lcr_timer *timer, void *instance, int index)
2057 class Psip *psip = (class Psip *)instance;
2059 /* stop timer if ... */
2060 if (!psip->p_tone_name[0])
2068 #define SEND_SIP_LEN 160
2070 void Psip::load_tx(void)
2073 struct timeval current_time;
2074 int tosend = SEND_SIP_LEN, i;
2075 unsigned char buf[SEND_SIP_LEN], *p = buf;
2078 gettimeofday(¤t_time, NULL);
2079 if (!p_s_next_tv_sec) {
2080 /* if timer expired the first time, set next expected timeout 160 samples in advance */
2081 p_s_next_tv_sec = current_time.tv_sec;
2082 p_s_next_tv_usec = current_time.tv_usec + SEND_SIP_LEN * 125;
2083 if (p_s_next_tv_usec >= 1000000) {
2084 p_s_next_tv_usec -= 1000000;
2087 schedule_timer(&p_s_loadtimer, 0, SEND_SIP_LEN * 125);
2089 diff = 1000000 * (current_time.tv_sec - p_s_next_tv_sec)
2090 + (current_time.tv_usec - p_s_next_tv_usec);
2091 if (diff < -SEND_SIP_LEN * 125 || diff > SEND_SIP_LEN * 125) {
2092 /* if clock drifts too much, set next timeout event to current timer + 160 */
2094 p_s_next_tv_sec = current_time.tv_sec;
2095 p_s_next_tv_usec = current_time.tv_usec + SEND_SIP_LEN * 125;
2096 if (p_s_next_tv_usec >= 1000000) {
2097 p_s_next_tv_usec -= 1000000;
2101 /* if diff is positive, it took too long, so next timeout will be earlier */
2102 p_s_next_tv_usec += SEND_SIP_LEN * 125;
2103 if (p_s_next_tv_usec >= 1000000) {
2104 p_s_next_tv_usec -= 1000000;
2108 schedule_timer(&p_s_loadtimer, 0, SEND_SIP_LEN * 125 - diff);
2112 if (p_tone_name[0]) {
2113 tosend -= read_audio(p, tosend);
2116 PERROR("buffer is not completely filled\n");
2121 for (i = 0; i < SEND_SIP_LEN; i++) {
2125 /* transmit data via rtp */
2126 rtp_send_frame(buf, SEND_SIP_LEN, (options.law=='a')?PAYLOAD_TYPE_ALAW:PAYLOAD_TYPE_ULAW);