FreeCalypso > hg > themwi-system-sw

annotate sip-in/invite.c @ 108:0d6435808bcd

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sip-in: implement 100rel for 180 Ringing response
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 28 Sep 2022 14:29:10 -0800
parents 372209628038
children 9b87894704eb
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1 /*
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2 * Here we implement our handling of SIP INVITE method.
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3 */
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4
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5 #include <sys/types.h>
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6 #include <sys/socket.h>
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7 #include <netinet/in.h>
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8 #include <arpa/inet.h>
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9 #include <stdio.h>
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10 #include <stdint.h>
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11 #include <stdlib.h>
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12 #include <string.h>
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13 #include <strings.h>
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14 #include <syslog.h>
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15 #include "../include/gsm48_const.h"
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16 #include "../libsip/parse.h"
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17 #include "../libsip/uas_basic.h"
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18 #include "../libsip/grok_from.h"
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19 #include "../libsip/req_supp.h"
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20 #include "../libsip/sdp.h"
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21 #include "../libsip/out_msg.h"
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22 #include "call.h"
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23
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24 extern struct in_addr sip_bind_ip;
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25 extern unsigned sip_bind_port;
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26 extern int cfg_use_100rel;
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27 extern int cfg_force_pcma;
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28 extern struct call *call_list;
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29
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30 extern struct call *find_call_by_sip_id();
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31 extern char *get_single_header();
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32
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33 fill_invite_resp_from_call(msg, call)
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34 struct sip_msg_out *msg;
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35 struct call *call;
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36 {
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37 char cseq_str[32];
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38 int rc;
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39
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40 rc = out_msg_add_header(msg, "From", call->invite_from);
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41 if (rc < 0)
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42 return rc;
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43 rc = out_msg_add_header(msg, "To", call->invite_to);
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44 if (rc < 0)
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45 return rc;
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46 rc = out_msg_add_header(msg, "Call-ID", call->sip_call_id);
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47 if (rc < 0)
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48 return rc;
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49 sprintf(cseq_str, "%u INVITE", call->invite_cseq);
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50 rc = out_msg_add_header(msg, "CSeq", cseq_str);
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51 if (rc < 0)
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52 return rc;
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53 return out_msg_add_header(msg, "Via", call->invite_via);
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54 }
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55
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56 fill_invite_200_resp(msg, call)
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57 struct sip_msg_out *msg;
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58 struct call *call;
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59 {
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60 char contact_str[80];
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61 struct sdp_gen sdp;
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62 int rc;
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63
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64 start_response_out_msg(msg, "200 CONNECT");
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65 rc = fill_invite_resp_from_call(msg, call);
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66 if (rc < 0)
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67 return rc;
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68 sprintf(contact_str, "<sip:%s:%u;transport=udp>",
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69 inet_ntoa(sip_bind_ip), sip_bind_port);
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70 rc = out_msg_add_header(msg, "Contact", contact_str);
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71 if (rc < 0)
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72 return rc;
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73 rc = out_msg_add_header(msg, "Content-Type", "application/sdp");
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74 if (rc < 0)
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75 return rc;
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76 bzero(&sdp, sizeof sdp);
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77 sdp.conn_ip = call->pstn_rtp_local.sin_addr;
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78 sdp.conn_port = ntohs(call->pstn_rtp_local.sin_port);
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79 sdp.codec_mask = call->use_pcma ? SDP_CODEC_MASK_PCMA
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80 : SDP_CODEC_MASK_PCMU;
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81 sdp.session_id = (sdp.conn_port << 16) | call->sdp_addend;
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82 sdp.owner_ip = sip_bind_ip;
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83 return out_msg_finish_sdp(msg, &sdp);
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84 }
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85
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86 static void
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87 invite_new_call(req, ess, sin)
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88 struct sip_pkt_rx *req;
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89 struct uas_parse_hdrs *ess;
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90 struct sockaddr_in *sin;
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91 {
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92 static unsigned cycle_tag_num, cycle_sdp_addend;
48
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93 char uri_user[13], *called_nanp;
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94 struct sip_msg_out resp;
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95 struct grok_from gfrom;
49
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96 struct supported_ext supp_ext;
50
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97 char *hval, *unsup_ext;
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98 int ext_100rel_req, ext_100rel_sup, use_100rel, use_pcma;
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99 struct sdp_parse sdp_parse;
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100 struct sdp_gen sdp_gen;
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101 struct call *call;
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102 char *dp;
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103 unsigned req_uri_len, to_hdr_len, copylen;
48
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104 int rc;
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105
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106 /* extract called number from Request-URI */
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107 rc = user_from_sip_uri(req->req_uri, uri_user, 12);
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108 if (rc < 0) {
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109 not_nanp: start_response_out_msg(&resp,
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110 "416 Request-URI is not a NANP number");
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111 error_resp: rc = add_resp_basic_headers(&resp, ess, req->req_method);
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112 if (rc < 0) {
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113 error_resp_toolong: syslog(LOG_ERR,
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114 "INVITE early error response length exceeded");
48
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115 return;
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116 }
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117 out_msg_finish(&resp);
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118 sip_tx_packet(&resp, sin);
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119 return;
48
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120 }
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121 if (uri_user[0] == '+') {
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122 if (grok_number_string(uri_user+1, 0) != 11 ||
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123 uri_user[1] != '1')
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 goto not_nanp;
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 called_nanp = uri_user + 2;
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 } else switch (grok_number_string(uri_user)) {
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 case 10:
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 called_nanp = uri_user;
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 break;
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 case 11:
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 if (uri_user[0] != '1')
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 goto not_nanp;
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 called_nanp = uri_user + 1;
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 break;
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 default:
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 goto not_nanp;
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 }
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138 if (!is_nanp_valid_prefix(called_nanp))
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 /* 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
141 refresh_number_db();
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 if (!is_nanp_locally_owned(called_nanp)) {
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 start_response_out_msg(&resp,
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 "404 Called number does not belong here");
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 goto error_resp;
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 }
51
36a30349b490 sip-in: parse INVITE From header
Mychaela Falconia <falcon@freecalypso.org>
parents: 50
diff changeset
147 /* parse and validate From header */
36a30349b490 sip-in: parse INVITE From header
Mychaela Falconia <falcon@freecalypso.org>
parents: 50
diff changeset
148 rc = grok_from_header(ess->from, &gfrom);
36a30349b490 sip-in: parse INVITE From header
Mychaela Falconia <falcon@freecalypso.org>
parents: 50
diff changeset
149 if (rc < 0) {
36a30349b490 sip-in: parse INVITE From header
Mychaela Falconia <falcon@freecalypso.org>
parents: 50
diff changeset
150 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
151 goto error_resp;
36a30349b490 sip-in: parse INVITE From header
Mychaela Falconia <falcon@freecalypso.org>
parents: 50
diff changeset
152 }
76
21276f045026 sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents: 66
diff changeset
153 /* 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
154 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
155 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
156 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
157 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
158 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
159 goto error_resp;
21276f045026 sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents: 66
diff changeset
160 }
21276f045026 sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents: 66
diff changeset
161 } 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
162 if (ess->to[0] != '<')
21276f045026 sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents: 66
diff changeset
163 goto bad_to_header;
21276f045026 sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents: 66
diff changeset
164 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
165 goto bad_to_header;
21276f045026 sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents: 66
diff changeset
166 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
167 goto bad_to_header;
21276f045026 sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents: 66
diff changeset
168 } else
21276f045026 sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents: 66
diff changeset
169 goto bad_to_header;
49
dec31b1a8b96 sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
170 /* check 100rel and catch any unsupported requirements */
dec31b1a8b96 sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
171 supp_ext.name = "100rel";
dec31b1a8b96 sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
172 supp_ext.req_flag = &ext_100rel_req;
dec31b1a8b96 sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
173 supp_ext.sup_flag = &ext_100rel_sup;
dec31b1a8b96 sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
174 ext_100rel_req = ext_100rel_sup = 0;
dec31b1a8b96 sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
175 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
176 if (rc < 0) {
dec31b1a8b96 sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
177 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
178 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
179 if (rc < 0)
dec31b1a8b96 sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
180 goto error_resp_toolong;
dec31b1a8b96 sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
181 goto error_resp;
dec31b1a8b96 sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
182 }
dec31b1a8b96 sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
183 if (ext_100rel_req)
dec31b1a8b96 sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
184 use_100rel = 1;
dec31b1a8b96 sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
185 else if (ext_100rel_sup)
dec31b1a8b96 sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
186 use_100rel = cfg_use_100rel;
dec31b1a8b96 sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
187 else
dec31b1a8b96 sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents: 48
diff changeset
188 use_100rel = 0;
50
daf1c26d7ae2 sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents: 49
diff changeset
189 /* 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
190 if (!req->msg_body_len) {
daf1c26d7ae2 sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents: 49
diff changeset
191 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
192 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
193 if (rc < 0)
daf1c26d7ae2 sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents: 49
diff changeset
194 goto error_resp_toolong;
daf1c26d7ae2 sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents: 49
diff changeset
195 goto error_resp;
daf1c26d7ae2 sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents: 49
diff changeset
196 }
daf1c26d7ae2 sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents: 49
diff changeset
197 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
198 if (!hval) {
daf1c26d7ae2 sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents: 49
diff changeset
199 start_response_out_msg(&resp,
daf1c26d7ae2 sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents: 49
diff changeset
200 "415 Missing Content-Type header");
daf1c26d7ae2 sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents: 49
diff changeset
201 goto error_415;
daf1c26d7ae2 sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents: 49
diff changeset
202 }
daf1c26d7ae2 sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents: 49
diff changeset
203 if (strcasecmp(hval, "application/sdp")) {
daf1c26d7ae2 sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents: 49
diff changeset
204 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
205 goto error_415;
daf1c26d7ae2 sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents: 49
diff changeset
206 }
55
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
207 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
208 if (rc < 0) {
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
209 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
210 goto error_resp;
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
211 }
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
212 switch (sdp_parse.codec_mask) {
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
213 case SDP_CODEC_MASK_PCMU:
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
214 use_pcma = 0;
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
215 break;
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
216 case SDP_CODEC_MASK_PCMA:
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
217 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
218 use_pcma = 1;
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
219 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
220 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
221 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
222 break;
55
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
223 default:
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
224 start_response_out_msg(&resp,
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
225 "488 Unsupported codec selection");
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
226 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
227 if (rc < 0)
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
228 goto error_resp_toolong;
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
229 rc = out_msg_add_header(&resp, "Content-Type",
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
230 "application/sdp");
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
231 if (rc < 0)
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
232 goto error_resp_toolong;
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
233 bzero(&sdp_gen, sizeof sdp_gen);
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
234 sdp_gen.owner_ip = sip_bind_ip;
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
235 sdp_gen.conn_ip = sip_bind_ip;
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
236 sdp_gen.codec_mask = SDP_CODEC_MASK_BOTH;
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
237 rc = out_msg_finish_sdp(&resp, &sdp_gen);
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
238 if (rc < 0)
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
239 goto error_resp_toolong;
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
240 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
241 return;
55
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
242 }
f1d59210f7b2 sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents: 51
diff changeset
243 /* SIP INVITE validation done - 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
244 rc = connect_gsm_mtcall();
d61d0136f6a5 sip-in INVITE processing: return "GSM service is offline" indication
Mychaela Falconia <falcon@freecalypso.org>
parents: 55
diff changeset
245 if (rc < 0) {
107
372209628038 sip-in: handle themwi-mgw shutdown without terminating
Mychaela Falconia <falcon@freecalypso.org>
parents: 104
diff changeset
246 gsm_offline: 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
247 goto error_resp;
d61d0136f6a5 sip-in INVITE processing: return "GSM service is offline" indication
Mychaela Falconia <falcon@freecalypso.org>
parents: 55
diff changeset
248 }
107
372209628038 sip-in: handle themwi-mgw shutdown without terminating
Mychaela Falconia <falcon@freecalypso.org>
parents: 104
diff changeset
249 rc = connect_tmgw_socket();
372209628038 sip-in: handle themwi-mgw shutdown without terminating
Mychaela Falconia <falcon@freecalypso.org>
parents: 104
diff changeset
250 if (rc < 0)
372209628038 sip-in: handle themwi-mgw shutdown without terminating
Mychaela Falconia <falcon@freecalypso.org>
parents: 104
diff changeset
251 goto gsm_offline;
57
d61d0136f6a5 sip-in INVITE processing: return "GSM service is offline" indication
Mychaela Falconia <falcon@freecalypso.org>
parents: 55
diff changeset
252 /* stateful processing begins */
60
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
253 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
254 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
255 if (!call) {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
256 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
257 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
258 "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
259 goto error_resp;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
260 }
77
fe39404092d9 sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
parents: 76
diff changeset
261 cycle_tag_num++;
fe39404092d9 sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
parents: 76
diff changeset
262 if (cycle_tag_num >= 1000000)
fe39404092d9 sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
parents: 76
diff changeset
263 cycle_tag_num = 0;
fe39404092d9 sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
parents: 76
diff changeset
264 cycle_sdp_addend++;
fe39404092d9 sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
parents: 76
diff changeset
265 if (cycle_sdp_addend >= 0x10000)
fe39404092d9 sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
parents: 76
diff changeset
266 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
267 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
268 dp = (char *)(call + 1);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
269 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
270 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
271 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
272 dp += copylen;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
273 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
274 call->invite_from = dp;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
275 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
276 dp += copylen;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
277 call->invite_to = dp;
77
fe39404092d9 sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
parents: 76
diff changeset
278 *dp++ = '<';
fe39404092d9 sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
parents: 76
diff changeset
279 bcopy(req->req_uri, dp, req_uri_len);
fe39404092d9 sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
parents: 76
diff changeset
280 dp += req_uri_len;
fe39404092d9 sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
parents: 76
diff changeset
281 *dp++ = '>';
fe39404092d9 sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
parents: 76
diff changeset
282 sprintf(dp, ";tag=in%06u", cycle_tag_num);
fe39404092d9 sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
parents: 76
diff changeset
283 dp += 14;
60
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
284 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
285 call->invite_via = dp;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
286 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
287 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
288 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
289 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
290 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
291 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
292 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
293 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
294 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
295 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
296 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
297 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
298 call->use_pcma = use_pcma;
77
fe39404092d9 sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
parents: 76
diff changeset
299 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
300 /* generate 100 response */
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
301 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
302 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
303 if (rc < 0) {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
304 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
305 free(call);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
306 return;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
307 }
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
308 out_msg_finish(&resp);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
309 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
310 /* add to call list */
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
311 call->next = call_list;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
312 call_list = call;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
313 /* send CRCX to TMGW */
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
314 tmgw_send_crcx(call);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
315 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
316 call->sip_state = SIP_STATE_INVITE_PROC;
48
8117d8ee44a5 sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
317 }
60
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
318
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
319 static void
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
320 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
321 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
322 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
323 struct sockaddr_in *sin;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
324 struct call *call;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
325 {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
326 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
327 int rc;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
328
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
329 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
330 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
331 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
332 if (rc < 0) {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
333 syslog(LOG_ERR,
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
334 "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
335 return;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
336 }
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
337 out_msg_finish(&resp);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
338 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
339 return;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
340 }
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
341 /* 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
342 switch (call->sip_state) {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
343 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
344 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
345 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
346 out_msg_finish(&resp);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
347 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
348 return;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
349 case SIP_STATE_RINGING:
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
350 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
351 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
352 out_msg_finish(&resp);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
353 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
354 return;
108
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
355 case SIP_STATE_RINGING_REL:
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
356 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
357 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
358 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
359 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
360 out_msg_finish(&resp);
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
361 sip_tx_packet(&resp, sin);
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
362 return;
60
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
363 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
364 case SIP_STATE_CONNECTED:
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
365 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
366 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
367 return;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
368 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
369 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
370 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
371 out_msg_finish(&resp);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
372 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
373 return;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
374 default:
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
375 /* silently discard */
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
376 return;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
377 }
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
378 }
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
379
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
380 void
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
381 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
382 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
383 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
384 struct sockaddr_in *sin;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
385 {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
386 struct call *call;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
387
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
388 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
389 if (call)
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
390 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
391 else
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
392 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
393 }
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
394
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
395 void
65
7c0309df59f8 sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents: 60
diff changeset
396 signal_invite_ringing(call)
7c0309df59f8 sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents: 60
diff changeset
397 struct call *call;
7c0309df59f8 sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents: 60
diff changeset
398 {
7c0309df59f8 sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents: 60
diff changeset
399 struct sip_msg_out resp;
108
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
400 int rc;
65
7c0309df59f8 sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents: 60
diff changeset
401
7c0309df59f8 sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents: 60
diff changeset
402 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
403 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
404 if (rc < 0) {
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
405 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
406 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
407 call->overall_state = OVERALL_STATE_TEARDOWN;
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
408 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
409 GSM48_CC_CAUSE_INTERWORKING);
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
410 disconnect_tmgw(call);
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
411 /* TODO: transition from TEARDOWN to DEAD_SIP */
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
412 return;
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
413 }
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
414 if (call->use_100rel) {
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
415 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
416 if (rc < 0)
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
417 goto msg_size_err;
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
418 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
419 if (rc < 0)
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
420 goto msg_size_err;
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
421 }
65
7c0309df59f8 sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents: 60
diff changeset
422 out_msg_finish(&resp);
7c0309df59f8 sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents: 60
diff changeset
423 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
424 if (call->use_100rel) {
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
425 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
426 call->sip_tx_count = 1;
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
427 } else
0d6435808bcd sip-in: implement 100rel for 180 Ringing response
Mychaela Falconia <falcon@freecalypso.org>
parents: 107
diff changeset
428 call->sip_state = SIP_STATE_RINGING;
65
7c0309df59f8 sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents: 60
diff changeset
429 }
7c0309df59f8 sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents: 60
diff changeset
430
7c0309df59f8 sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents: 60
diff changeset
431 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
432 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
433 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
434 {
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents: 65
diff changeset
435 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
436 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
437
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents: 65
diff changeset
438 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
439 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
440 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
441 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
442 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
443 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
444 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
445 disconnect_tmgw(call);
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents: 65
diff changeset
446 /* TODO: transition from TEARDOWN to DEAD_SIP */
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents: 65
diff changeset
447 return;
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents: 65
diff changeset
448 }
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents: 65
diff changeset
449 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
450 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
451 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
452 }
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents: 65
diff changeset
453
5beb51de1bae sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents: 65
diff changeset
454 void
60
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
455 signal_invite_error(call)
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
456 struct call *call;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
457 {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
458 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
459 int rc;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
460
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
461 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
462 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
463 if (rc < 0) {
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
464 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
465 call->sip_state = SIP_STATE_MSG_SIZE_ERR;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
466 /* TODO: transition from TEARDOWN to DEAD_SIP */
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
467 return;
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
468 }
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
469 out_msg_finish(&resp);
02761f1ae5e5 sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents: 57
diff changeset
470 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
471 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
472 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
473 }