themwi-system-sw: sip-in/invite.c annotate

annotate sip-in/invite.c @ 126:815e4c59162e

mgw DTMF: tone definitions and sample array generation

author	Mychaela Falconia <falcon@freecalypso.org>
date	Sat, 01 Oct 2022 17:09:51 -0800
parents	c93c339271a7
children

rev	line source
48 8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	1 /*
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	2 * Here we implement our handling of SIP INVITE method.
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	3 */
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	4
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	5 #include <sys/types.h>
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	6 #include <sys/socket.h>
109 9b87894704eb sip-in: first step toward final call clearing Mychaela Falconia <falcon@freecalypso.org> parents: 108 diff changeset	7 #include <sys/time.h>
48 8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	8 #include <netinet/in.h>
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	9 #include <arpa/inet.h>
48 8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	10 #include <stdio.h>
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	11 #include <stdint.h>
48 8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	12 #include <stdlib.h>
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	13 #include <string.h>
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	14 #include <strings.h>
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	15 #include <syslog.h>
66 5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	16 #include "../include/gsm48_const.h"
48 8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	17 #include "../libsip/parse.h"
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	18 #include "../libsip/uas_basic.h"
51 36a30349b490 sip-in: parse INVITE From header Mychaela Falconia <falcon@freecalypso.org> parents: 50 diff changeset	19 #include "../libsip/grok_from.h"
49 dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	20 #include "../libsip/req_supp.h"
55 f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	21 #include "../libsip/sdp.h"
48 8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	22 #include "../libsip/out_msg.h"
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	23 #include "call.h"
48 8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	24
55 f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	25 extern struct in_addr sip_bind_ip;
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	26 extern unsigned sip_bind_port;
49 dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	27 extern int cfg_use_100rel;
104 ce3b1db7d1d7 sip-in: force-pcma-codec config option to use PCMA when both are offered Mychaela Falconia <falcon@freecalypso.org> parents: 77 diff changeset	28 extern int cfg_force_pcma;
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	29 extern struct call *call_list;
109 9b87894704eb sip-in: first step toward final call clearing Mychaela Falconia <falcon@freecalypso.org> parents: 108 diff changeset	30 extern unsigned sip_linger_error;
49 dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	31
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	32 extern struct call *find_call_by_sip_id();
50 daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	33 extern char *get_single_header();
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	34
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	35 fill_invite_resp_from_call(msg, call)
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	36 struct sip_msg_out *msg;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	37 struct call *call;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	38 {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	39 char cseq_str[32];
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	40 int rc;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	41
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	42 rc = out_msg_add_header(msg, "From", call->invite_from);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	43 if (rc < 0)
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	44 return rc;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	45 rc = out_msg_add_header(msg, "To", call->invite_to);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	46 if (rc < 0)
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	47 return rc;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	48 rc = out_msg_add_header(msg, "Call-ID", call->sip_call_id);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	49 if (rc < 0)
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	50 return rc;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	51 sprintf(cseq_str, "%u INVITE", call->invite_cseq);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	52 rc = out_msg_add_header(msg, "CSeq", cseq_str);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	53 if (rc < 0)
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	54 return rc;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	55 return out_msg_add_header(msg, "Via", call->invite_via);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	56 }
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	57
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	58 fill_invite_200_resp(msg, call)
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	59 struct sip_msg_out *msg;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	60 struct call *call;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	61 {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	62 char contact_str[80];
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	63 struct sdp_gen sdp;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	64 int rc;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	65
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	66 start_response_out_msg(msg, "200 CONNECT");
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	67 rc = fill_invite_resp_from_call(msg, call);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	68 if (rc < 0)
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	69 return rc;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	70 sprintf(contact_str, "<sip:%s:%u;transport=udp>",
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	71 inet_ntoa(sip_bind_ip), sip_bind_port);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	72 rc = out_msg_add_header(msg, "Contact", contact_str);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	73 if (rc < 0)
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	74 return rc;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	75 rc = out_msg_add_header(msg, "Content-Type", "application/sdp");
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	76 if (rc < 0)
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	77 return rc;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	78 bzero(&sdp, sizeof sdp);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	79 sdp.conn_ip = call->pstn_rtp_local.sin_addr;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	80 sdp.conn_port = ntohs(call->pstn_rtp_local.sin_port);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	81 sdp.codec_mask = call->use_pcma ? SDP_CODEC_MASK_PCMA
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	82 : SDP_CODEC_MASK_PCMU;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	83 sdp.session_id = (sdp.conn_port << 16) \| call->sdp_addend;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	84 sdp.owner_ip = sip_bind_ip;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	85 return out_msg_finish_sdp(msg, &sdp);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	86 }
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	87
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	88 static void
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	89 invite_new_call(req, ess, sin)
48 8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	90 struct sip_pkt_rx *req;
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	91 struct uas_parse_hdrs *ess;
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	92 struct sockaddr_in *sin;
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	93 {
77 fe39404092d9 sip-in: generate To tags Mychaela Falconia <falcon@freecalypso.org> parents: 76 diff changeset	94 static unsigned cycle_tag_num, cycle_sdp_addend;
48 8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	95 char uri_user[13], *called_nanp;
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	96 struct sip_msg_out resp;
51 36a30349b490 sip-in: parse INVITE From header Mychaela Falconia <falcon@freecalypso.org> parents: 50 diff changeset	97 struct grok_from gfrom;
49 dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	98 struct supported_ext supp_ext;
50 daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	99 char hval, unsup_ext;
55 f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	100 int ext_100rel_req, ext_100rel_sup, use_100rel, use_pcma;
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	101 struct sdp_parse sdp_parse;
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	102 struct sdp_gen sdp_gen;
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	103 struct call *call;
114 a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	104 char *dp, cdr_str[80];
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	105 unsigned cdr_num_len, cdr_cnam_len;
76 21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	106 unsigned req_uri_len, to_hdr_len, copylen;
48 8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	107 int rc;
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	108
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	109 /* extract called number from Request-URI */
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	110 rc = user_from_sip_uri(req->req_uri, uri_user, 12);
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	111 if (rc < 0) {
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	112 not_nanp: start_response_out_msg(&resp,
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	113 "416 Request-URI is not a NANP number");
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	114 error_resp: rc = add_resp_basic_headers(&resp, ess, req->req_method);
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	115 if (rc < 0) {
49 dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	116 error_resp_toolong: syslog(LOG_ERR,
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	117 "INVITE early error response length exceeded");
48 8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	118 return;
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	119 }
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	120 out_msg_finish(&resp);
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	121 sip_tx_packet(&resp, sin);
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	122 return;
48 8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	123 }
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	124 if (uri_user[0] == '+') {
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	125 if (grok_number_string(uri_user+1, 0) != 11 \|\|
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	126 uri_user[1] != '1')
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	127 goto not_nanp;
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	128 called_nanp = uri_user + 2;
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	129 } else switch (grok_number_string(uri_user)) {
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	130 case 10:
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	131 called_nanp = uri_user;
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	132 break;
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	133 case 11:
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	134 if (uri_user[0] != '1')
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	135 goto not_nanp;
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	136 called_nanp = uri_user + 1;
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	137 break;
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	138 default:
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	139 goto not_nanp;
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	140 }
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	141 if (!is_nanp_valid_prefix(called_nanp))
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	142 goto not_nanp;
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	143 /* it is valid NANP - but is it one of ours? */
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	144 refresh_number_db();
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	145 if (!is_nanp_locally_owned(called_nanp)) {
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	146 start_response_out_msg(&resp,
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	147 "404 Called number does not belong here");
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	148 goto error_resp;
8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	149 }
51 36a30349b490 sip-in: parse INVITE From header Mychaela Falconia <falcon@freecalypso.org> parents: 50 diff changeset	150 /* parse and validate From header */
36a30349b490 sip-in: parse INVITE From header Mychaela Falconia <falcon@freecalypso.org> parents: 50 diff changeset	151 rc = grok_from_header(ess->from, &gfrom);
36a30349b490 sip-in: parse INVITE From header Mychaela Falconia <falcon@freecalypso.org> parents: 50 diff changeset	152 if (rc < 0) {
36a30349b490 sip-in: parse INVITE From header Mychaela Falconia <falcon@freecalypso.org> parents: 50 diff changeset	153 start_response_out_msg(&resp, "400 Malformed From header");
36a30349b490 sip-in: parse INVITE From header Mychaela Falconia <falcon@freecalypso.org> parents: 50 diff changeset	154 goto error_resp;
36a30349b490 sip-in: parse INVITE From header Mychaela Falconia <falcon@freecalypso.org> parents: 50 diff changeset	155 }
76 21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	156 /* validate To header for the purpose of tag addition */
21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	157 req_uri_len = strlen(req->req_uri);
21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	158 to_hdr_len = strlen(ess->to);
21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	159 if (to_hdr_len == req_uri_len) {
21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	160 if (strcasecmp(ess->to, req->req_uri)) {
21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	161 bad_to_header: start_response_out_msg(&resp, "400 Bad To header");
21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	162 goto error_resp;
21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	163 }
21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	164 } else if (to_hdr_len == req_uri_len + 2) {
21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	165 if (ess->to[0] != '<')
21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	166 goto bad_to_header;
21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	167 if (strncasecmp(ess->to+1, req->req_uri, req_uri_len))
21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	168 goto bad_to_header;
21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	169 if (ess->to[req_uri_len+1] != '>')
21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	170 goto bad_to_header;
21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	171 } else
21276f045026 sip-in: validate To header prior to tag addition Mychaela Falconia <falcon@freecalypso.org> parents: 66 diff changeset	172 goto bad_to_header;
49 dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	173 /* check 100rel and catch any unsupported requirements */
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	174 supp_ext.name = "100rel";
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	175 supp_ext.req_flag = &ext_100rel_req;
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	176 supp_ext.sup_flag = &ext_100rel_sup;
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	177 ext_100rel_req = ext_100rel_sup = 0;
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	178 rc = parse_require_supported(req, &supp_ext, 1, &unsup_ext);
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	179 if (rc < 0) {
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	180 start_response_out_msg(&resp, "420 Extension not supported");
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	181 rc = out_msg_add_header(&resp, "Unsupported", unsup_ext);
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	182 if (rc < 0)
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	183 goto error_resp_toolong;
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	184 goto error_resp;
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	185 }
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	186 if (ext_100rel_req)
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	187 use_100rel = 1;
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	188 else if (ext_100rel_sup)
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	189 use_100rel = cfg_use_100rel;
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	190 else
dec31b1a8b96 sip-in: check Require and Supported Mychaela Falconia <falcon@freecalypso.org> parents: 48 diff changeset	191 use_100rel = 0;
50 daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	192 /* did the caller send an SDP message body? */
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	193 if (!req->msg_body_len) {
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	194 start_response_out_msg(&resp, "415 Missing SDP body");
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	195 error_415: rc = out_msg_add_header(&resp, "Accept", "application/sdp");
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	196 if (rc < 0)
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	197 goto error_resp_toolong;
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	198 goto error_resp;
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	199 }
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	200 hval = get_single_header(req, "Content-Type", "c", (int *) 0);
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	201 if (!hval) {
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	202 start_response_out_msg(&resp,
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	203 "415 Missing Content-Type header");
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	204 goto error_415;
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	205 }
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	206 if (strcasecmp(hval, "application/sdp")) {
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	207 start_response_out_msg(&resp, "415 Unsupported Content-Type");
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	208 goto error_415;
daf1c26d7ae2 sip-in: check INVITE Content-Type header Mychaela Falconia <falcon@freecalypso.org> parents: 49 diff changeset	209 }
55 f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	210 rc = parse_incoming_sdp(req->msg_body, req->msg_body_len, &sdp_parse);
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	211 if (rc < 0) {
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	212 start_response_out_msg(&resp, "488 Malformed SDP body");
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	213 goto error_resp;
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	214 }
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	215 switch (sdp_parse.codec_mask) {
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	216 case SDP_CODEC_MASK_PCMU:
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	217 use_pcma = 0;
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	218 break;
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	219 case SDP_CODEC_MASK_PCMA:
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	220 case SDP_CODEC_MASK_BOTH \| SDP_CODEC_MASK_PCMA_PREF:
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	221 use_pcma = 1;
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	222 break;
104 ce3b1db7d1d7 sip-in: force-pcma-codec config option to use PCMA when both are offered Mychaela Falconia <falcon@freecalypso.org> parents: 77 diff changeset	223 case SDP_CODEC_MASK_BOTH:
ce3b1db7d1d7 sip-in: force-pcma-codec config option to use PCMA when both are offered Mychaela Falconia <falcon@freecalypso.org> parents: 77 diff changeset	224 use_pcma = cfg_force_pcma;
ce3b1db7d1d7 sip-in: force-pcma-codec config option to use PCMA when both are offered Mychaela Falconia <falcon@freecalypso.org> parents: 77 diff changeset	225 break;
55 f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	226 default:
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	227 start_response_out_msg(&resp,
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	228 "488 Unsupported codec selection");
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	229 rc = add_resp_basic_headers(&resp, ess, req->req_method);
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	230 if (rc < 0)
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	231 goto error_resp_toolong;
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	232 rc = out_msg_add_header(&resp, "Content-Type",
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	233 "application/sdp");
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	234 if (rc < 0)
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	235 goto error_resp_toolong;
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	236 bzero(&sdp_gen, sizeof sdp_gen);
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	237 sdp_gen.owner_ip = sip_bind_ip;
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	238 sdp_gen.conn_ip = sip_bind_ip;
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	239 sdp_gen.codec_mask = SDP_CODEC_MASK_BOTH;
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	240 rc = out_msg_finish_sdp(&resp, &sdp_gen);
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	241 if (rc < 0)
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	242 goto error_resp_toolong;
f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	243 sip_tx_packet(&resp, sin);
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	244 return;
55 f1d59210f7b2 sip-in INVITE processing: grok SDP Mychaela Falconia <falcon@freecalypso.org> parents: 51 diff changeset	245 }
114 a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	246 /* SIP INVITE validation done - gather CDR info */
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	247 cdr_num_len = gfrom.user_len;
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	248 if (cdr_num_len > 33)
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	249 cdr_num_len = 33;
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	250 cdr_cnam_len = gfrom.cnam_len;
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	251 if (cdr_cnam_len > 33)
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	252 cdr_cnam_len = 33;
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	253 if (cdr_cnam_len)
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	254 sprintf(cdr_str, "%.s (%s%.s%s)", cdr_num_len, gfrom.user,
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	255 gfrom.cnam_quoted ? "\"" : "", cdr_cnam_len, gfrom.cnam,
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	256 gfrom.cnam_quoted ? "\"" : "");
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	257 else
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	258 sprintf(cdr_str, "%.*s", cdr_num_len, gfrom.user);
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	259 hval = get_single_header(req, "P-Asserted-Identity", (char *) 0,
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	260 (int *) 0);
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	261 /* check if GSM service is up */
57 d61d0136f6a5 sip-in INVITE processing: return "GSM service is offline" indication Mychaela Falconia <falcon@freecalypso.org> parents: 55 diff changeset	262 rc = connect_gsm_mtcall();
d61d0136f6a5 sip-in INVITE processing: return "GSM service is offline" indication Mychaela Falconia <falcon@freecalypso.org> parents: 55 diff changeset	263 if (rc < 0) {
114 a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	264 gsm_offline: syslog(LOG_INFO, "Down-call from %s to %s", cdr_str, uri_user);
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	265 if (hval)
117 c93c339271a7 sip-in CDR syslog: put a safety limit on string length Mychaela Falconia <falcon@freecalypso.org> parents: 114 diff changeset	266 syslog(LOG_INFO, "Down-call PAI: %.100s", hval);
114 a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	267 start_response_out_msg(&resp, "480 GSM service is offline");
57 d61d0136f6a5 sip-in INVITE processing: return "GSM service is offline" indication Mychaela Falconia <falcon@freecalypso.org> parents: 55 diff changeset	268 goto error_resp;
d61d0136f6a5 sip-in INVITE processing: return "GSM service is offline" indication Mychaela Falconia <falcon@freecalypso.org> parents: 55 diff changeset	269 }
107 372209628038 sip-in: handle themwi-mgw shutdown without terminating Mychaela Falconia <falcon@freecalypso.org> parents: 104 diff changeset	270 rc = connect_tmgw_socket();
372209628038 sip-in: handle themwi-mgw shutdown without terminating Mychaela Falconia <falcon@freecalypso.org> parents: 104 diff changeset	271 if (rc < 0)
372209628038 sip-in: handle themwi-mgw shutdown without terminating Mychaela Falconia <falcon@freecalypso.org> parents: 104 diff changeset	272 goto gsm_offline;
57 d61d0136f6a5 sip-in INVITE processing: return "GSM service is offline" indication Mychaela Falconia <falcon@freecalypso.org> parents: 55 diff changeset	273 /* stateful processing begins */
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	274 call = malloc(sizeof(struct call) + strlen(ess->call_id) +
77 fe39404092d9 sip-in: generate To tags Mychaela Falconia <falcon@freecalypso.org> parents: 76 diff changeset	275 strlen(ess->from) + req_uri_len + strlen(ess->via) + 19);
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	276 if (!call) {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	277 syslog(LOG_CRIT, "failed malloc for incoming call!");
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	278 start_response_out_msg(&resp,
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	279 "503 Gateway resource allocation failure");
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	280 goto error_resp;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	281 }
77 fe39404092d9 sip-in: generate To tags Mychaela Falconia <falcon@freecalypso.org> parents: 76 diff changeset	282 cycle_tag_num++;
fe39404092d9 sip-in: generate To tags Mychaela Falconia <falcon@freecalypso.org> parents: 76 diff changeset	283 if (cycle_tag_num >= 1000000)
fe39404092d9 sip-in: generate To tags Mychaela Falconia <falcon@freecalypso.org> parents: 76 diff changeset	284 cycle_tag_num = 0;
fe39404092d9 sip-in: generate To tags Mychaela Falconia <falcon@freecalypso.org> parents: 76 diff changeset	285 cycle_sdp_addend++;
fe39404092d9 sip-in: generate To tags Mychaela Falconia <falcon@freecalypso.org> parents: 76 diff changeset	286 if (cycle_sdp_addend >= 0x10000)
fe39404092d9 sip-in: generate To tags Mychaela Falconia <falcon@freecalypso.org> parents: 76 diff changeset	287 cycle_sdp_addend = 0;
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	288 bzero(call, sizeof(struct call));
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	289 dp = (char *)(call + 1);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	290 copylen = strlen(ess->call_id) + 1;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	291 call->sip_call_id = dp;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	292 bcopy(ess->call_id, dp, copylen);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	293 dp += copylen;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	294 copylen = strlen(ess->from) + 1;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	295 call->invite_from = dp;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	296 bcopy(ess->from, dp, copylen);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	297 dp += copylen;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	298 call->invite_to = dp;
77 fe39404092d9 sip-in: generate To tags Mychaela Falconia <falcon@freecalypso.org> parents: 76 diff changeset	299 *dp++ = '<';
fe39404092d9 sip-in: generate To tags Mychaela Falconia <falcon@freecalypso.org> parents: 76 diff changeset	300 bcopy(req->req_uri, dp, req_uri_len);
fe39404092d9 sip-in: generate To tags Mychaela Falconia <falcon@freecalypso.org> parents: 76 diff changeset	301 dp += req_uri_len;
fe39404092d9 sip-in: generate To tags Mychaela Falconia <falcon@freecalypso.org> parents: 76 diff changeset	302 *dp++ = '>';
fe39404092d9 sip-in: generate To tags Mychaela Falconia <falcon@freecalypso.org> parents: 76 diff changeset	303 sprintf(dp, ";tag=in%06u", cycle_tag_num);
fe39404092d9 sip-in: generate To tags Mychaela Falconia <falcon@freecalypso.org> parents: 76 diff changeset	304 dp += 14;
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	305 copylen = strlen(ess->via) + 1;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	306 call->invite_via = dp;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	307 bcopy(ess->via, dp, copylen);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	308 call->invite_cseq = ess->cseq_num;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	309 bcopy(sin, &call->udp_sin, sizeof(struct sockaddr_in));
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	310 bcopy(called_nanp, call->called_nanp, 11);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	311 call->from_uri = call->invite_from + (gfrom.uri - ess->from);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	312 call->from_uri_len = gfrom.uri_len;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	313 call->from_user = call->invite_from + (gfrom.user - ess->from);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	314 call->from_user_len = gfrom.user_len;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	315 call->use_100rel = use_100rel;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	316 call->pstn_rtp_remote.sin_family = AF_INET;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	317 call->pstn_rtp_remote.sin_addr = sdp_parse.ip_addr;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	318 call->pstn_rtp_remote.sin_port = htons(sdp_parse.audio_port);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	319 call->use_pcma = use_pcma;
113 bfc97065bf51 sip-in: syslog beginning and clearing of calls Mychaela Falconia <falcon@freecalypso.org> parents: 110 diff changeset	320 call->in_tag_num = cycle_tag_num;
77 fe39404092d9 sip-in: generate To tags Mychaela Falconia <falcon@freecalypso.org> parents: 76 diff changeset	321 call->sdp_addend = cycle_sdp_addend;
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	322 /* generate 100 response */
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	323 start_response_out_msg(&resp, "100 Proceeding");
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	324 rc = fill_invite_resp_from_call(&resp, call);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	325 if (rc < 0) {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	326 syslog(LOG_ERR, "INVITE 100 response length exceeded");
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	327 free(call);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	328 return;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	329 }
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	330 out_msg_finish(&resp);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	331 sip_tx_packet(&resp, sin);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	332 /* add to call list */
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	333 call->next = call_list;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	334 call_list = call;
114 a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	335 syslog(LOG_INFO, "Call in%06u from %s to %s", call->in_tag_num,
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	336 cdr_str, uri_user);
a30c25fb4c2f sip-in: generate CDR syslog entries Mychaela Falconia <falcon@freecalypso.org> parents: 113 diff changeset	337 if (hval)
117 c93c339271a7 sip-in CDR syslog: put a safety limit on string length Mychaela Falconia <falcon@freecalypso.org> parents: 114 diff changeset	338 syslog(LOG_INFO, "Call in%06u PAI: %.100s", call->in_tag_num,
c93c339271a7 sip-in CDR syslog: put a safety limit on string length Mychaela Falconia <falcon@freecalypso.org> parents: 114 diff changeset	339 hval);
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	340 /* send CRCX to TMGW */
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	341 tmgw_send_crcx(call);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	342 call->overall_state = OVERALL_STATE_CRCX;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	343 call->sip_state = SIP_STATE_INVITE_PROC;
48 8117d8ee44a5 sip-in: beginning of INVITE handling Mychaela Falconia <falcon@freecalypso.org> parents: diff changeset	344 }
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	345
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	346 static void
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	347 invite_existing_call(req, ess, sin, call)
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	348 struct sip_pkt_rx *req;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	349 struct uas_parse_hdrs *ess;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	350 struct sockaddr_in *sin;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	351 struct call *call;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	352 {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	353 struct sip_msg_out resp;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	354 int rc;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	355
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	356 if (ess->cseq_num != call->invite_cseq) {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	357 start_response_out_msg(&resp, "501 Re-INVITE not supported");
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	358 rc = add_resp_basic_headers(&resp, ess, req->req_method);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	359 if (rc < 0) {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	360 syslog(LOG_ERR,
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	361 "sending 501 Re-INVITE error: response length exceeded");
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	362 return;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	363 }
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	364 out_msg_finish(&resp);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	365 sip_tx_packet(&resp, sin);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	366 return;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	367 }
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	368 /* it's a retransmission, not a re-INVITE */
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	369 switch (call->sip_state) {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	370 case SIP_STATE_INVITE_PROC:
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	371 start_response_out_msg(&resp, "100 Proceeding");
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	372 fill_invite_resp_from_call(&resp, call);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	373 out_msg_finish(&resp);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	374 sip_tx_packet(&resp, sin);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	375 return;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	376 case SIP_STATE_RINGING:
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	377 start_response_out_msg(&resp, "180 Ringing");
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	378 fill_invite_resp_from_call(&resp, call);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	379 out_msg_finish(&resp);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	380 sip_tx_packet(&resp, sin);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	381 return;
108 0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	382 case SIP_STATE_RINGING_REL:
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	383 start_response_out_msg(&resp, "180 Ringing");
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	384 fill_invite_resp_from_call(&resp, call);
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	385 out_msg_add_header(&resp, "Require", "100rel");
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	386 out_msg_add_header(&resp, "RSeq", "1");
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	387 out_msg_finish(&resp);
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	388 sip_tx_packet(&resp, sin);
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	389 return;
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	390 case SIP_STATE_INVITE_200:
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	391 case SIP_STATE_CONNECTED:
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	392 fill_invite_200_resp(&resp, call);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	393 sip_tx_packet(&resp, sin);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	394 return;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	395 case SIP_STATE_INVITE_ERR:
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	396 start_response_out_msg(&resp, call->invite_fail);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	397 fill_invite_resp_from_call(&resp, call);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	398 out_msg_finish(&resp);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	399 sip_tx_packet(&resp, sin);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	400 return;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	401 default:
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	402 /* silently discard */
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	403 return;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	404 }
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	405 }
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	406
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	407 void
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	408 handle_sip_invite(req, ess, sin)
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	409 struct sip_pkt_rx *req;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	410 struct uas_parse_hdrs *ess;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	411 struct sockaddr_in *sin;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	412 {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	413 struct call *call;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	414
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	415 call = find_call_by_sip_id(ess->call_id);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	416 if (call)
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	417 invite_existing_call(req, ess, sin, call);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	418 else
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	419 invite_new_call(req, ess, sin);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	420 }
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	421
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	422 void
65 7c0309df59f8 sip-in: handling of ALERTING state Mychaela Falconia <falcon@freecalypso.org> parents: 60 diff changeset	423 signal_invite_ringing(call)
7c0309df59f8 sip-in: handling of ALERTING state Mychaela Falconia <falcon@freecalypso.org> parents: 60 diff changeset	424 struct call *call;
7c0309df59f8 sip-in: handling of ALERTING state Mychaela Falconia <falcon@freecalypso.org> parents: 60 diff changeset	425 {
7c0309df59f8 sip-in: handling of ALERTING state Mychaela Falconia <falcon@freecalypso.org> parents: 60 diff changeset	426 struct sip_msg_out resp;
108 0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	427 int rc;
65 7c0309df59f8 sip-in: handling of ALERTING state Mychaela Falconia <falcon@freecalypso.org> parents: 60 diff changeset	428
7c0309df59f8 sip-in: handling of ALERTING state Mychaela Falconia <falcon@freecalypso.org> parents: 60 diff changeset	429 start_response_out_msg(&resp, "180 Ringing");
108 0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	430 rc = fill_invite_resp_from_call(&resp, call);
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	431 if (rc < 0) {
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	432 msg_size_err: syslog(LOG_ERR, "INVITE 180 response length exceeded");
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	433 call->sip_state = SIP_STATE_MSG_SIZE_ERR;
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	434 call->overall_state = OVERALL_STATE_TEARDOWN;
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	435 disconnect_mncc(call, GSM48_CAUSE_LOC_PRN_S_LU,
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	436 GSM48_CC_CAUSE_INTERWORKING);
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	437 disconnect_tmgw(call);
109 9b87894704eb sip-in: first step toward final call clearing Mychaela Falconia <falcon@freecalypso.org> parents: 108 diff changeset	438 sip_mark_end_time(call, sip_linger_error);
108 0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	439 return;
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	440 }
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	441 if (call->use_100rel) {
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	442 rc = out_msg_add_header(&resp, "Require", "100rel");
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	443 if (rc < 0)
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	444 goto msg_size_err;
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	445 rc = out_msg_add_header(&resp, "RSeq", "1");
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	446 if (rc < 0)
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	447 goto msg_size_err;
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	448 }
65 7c0309df59f8 sip-in: handling of ALERTING state Mychaela Falconia <falcon@freecalypso.org> parents: 60 diff changeset	449 out_msg_finish(&resp);
7c0309df59f8 sip-in: handling of ALERTING state Mychaela Falconia <falcon@freecalypso.org> parents: 60 diff changeset	450 sip_tx_packet(&resp, &call->udp_sin);
108 0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	451 if (call->use_100rel) {
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	452 call->sip_state = SIP_STATE_RINGING_REL;
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	453 call->sip_tx_count = 1;
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	454 } else
0d6435808bcd sip-in: implement 100rel for 180 Ringing response Mychaela Falconia <falcon@freecalypso.org> parents: 107 diff changeset	455 call->sip_state = SIP_STATE_RINGING;
65 7c0309df59f8 sip-in: handling of ALERTING state Mychaela Falconia <falcon@freecalypso.org> parents: 60 diff changeset	456 }
7c0309df59f8 sip-in: handling of ALERTING state Mychaela Falconia <falcon@freecalypso.org> parents: 60 diff changeset	457
7c0309df59f8 sip-in: handling of ALERTING state Mychaela Falconia <falcon@freecalypso.org> parents: 60 diff changeset	458 void
66 5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	459 signal_invite_200(call)
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	460 struct call *call;
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	461 {
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	462 struct sip_msg_out resp;
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	463 int rc;
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	464
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	465 rc = fill_invite_200_resp(&resp, call);
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	466 if (rc < 0) {
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	467 syslog(LOG_ERR, "INVITE 200 response length exceeded");
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	468 call->sip_state = SIP_STATE_MSG_SIZE_ERR;
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	469 call->overall_state = OVERALL_STATE_TEARDOWN;
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	470 disconnect_mncc(call, GSM48_CAUSE_LOC_PRN_S_LU,
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	471 GSM48_CC_CAUSE_INTERWORKING);
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	472 disconnect_tmgw(call);
109 9b87894704eb sip-in: first step toward final call clearing Mychaela Falconia <falcon@freecalypso.org> parents: 108 diff changeset	473 sip_mark_end_time(call, sip_linger_error);
66 5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	474 return;
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	475 }
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	476 sip_tx_packet(&resp, &call->udp_sin);
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	477 call->sip_state = SIP_STATE_INVITE_200;
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	478 call->sip_tx_count = 1;
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	479 }
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	480
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200 Mychaela Falconia <falcon@freecalypso.org> parents: 65 diff changeset	481 void
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	482 signal_invite_error(call)
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	483 struct call *call;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	484 {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	485 struct sip_msg_out resp;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	486 int rc;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	487
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	488 start_response_out_msg(&resp, call->invite_fail);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	489 rc = fill_invite_resp_from_call(&resp, call);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	490 if (rc < 0) {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	491 syslog(LOG_ERR, "INVITE late error response length exceeded");
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	492 call->sip_state = SIP_STATE_MSG_SIZE_ERR;
109 9b87894704eb sip-in: first step toward final call clearing Mychaela Falconia <falcon@freecalypso.org> parents: 108 diff changeset	493 sip_mark_end_time(call, sip_linger_error);
110 c1c94b7fc2e2 sip-in call clearing: DEAD_SIP transition implemented Mychaela Falconia <falcon@freecalypso.org> parents: 109 diff changeset	494 transition_dead_sip(call);
60 02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	495 return;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	496 }
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	497 out_msg_finish(&resp);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	498 sip_tx_packet(&resp, &call->udp_sin);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	499 call->sip_state = SIP_STATE_INVITE_ERR;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	500 call->sip_tx_count = 1;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion Mychaela Falconia <falcon@freecalypso.org> parents: 57 diff changeset	501 }

FreeCalypso > hg > themwi-system-sw

annotate sip-in/invite.c @ 126:815e4c59162e