FreeCalypso > hg > themwi-system-sw
annotate sip-in/invite.c @ 98:423610bb2c9e
sip-in: send MDCX to TMGW to connect the call through
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 25 Sep 2022 20:28:54 -0800 |
parents | fe39404092d9 |
children | ce3b1db7d1d7 |
rev | line source |
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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 struct call *call_list; |
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28 |
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29 extern struct call *find_call_by_sip_id(); |
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30 extern char *get_single_header(); |
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31 |
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32 fill_invite_resp_from_call(msg, call) |
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33 struct sip_msg_out *msg; |
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34 struct call *call; |
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35 { |
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36 char cseq_str[32]; |
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37 int rc; |
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38 |
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39 rc = out_msg_add_header(msg, "From", call->invite_from); |
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40 if (rc < 0) |
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41 return rc; |
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42 rc = out_msg_add_header(msg, "To", call->invite_to); |
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43 if (rc < 0) |
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44 return rc; |
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45 rc = out_msg_add_header(msg, "Call-ID", call->sip_call_id); |
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46 if (rc < 0) |
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47 return rc; |
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48 sprintf(cseq_str, "%u INVITE", call->invite_cseq); |
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49 rc = out_msg_add_header(msg, "CSeq", cseq_str); |
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50 if (rc < 0) |
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51 return rc; |
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52 return out_msg_add_header(msg, "Via", call->invite_via); |
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53 } |
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54 |
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55 fill_invite_200_resp(msg, call) |
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56 struct sip_msg_out *msg; |
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57 struct call *call; |
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58 { |
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59 char contact_str[80]; |
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60 struct sdp_gen sdp; |
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61 int rc; |
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62 |
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63 start_response_out_msg(msg, "200 CONNECT"); |
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64 rc = fill_invite_resp_from_call(msg, call); |
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65 if (rc < 0) |
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66 return rc; |
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67 sprintf(contact_str, "<sip:%s:%u;transport=udp>", |
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68 inet_ntoa(sip_bind_ip), sip_bind_port); |
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69 rc = out_msg_add_header(msg, "Contact", contact_str); |
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70 if (rc < 0) |
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71 return rc; |
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72 rc = out_msg_add_header(msg, "Content-Type", "application/sdp"); |
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73 if (rc < 0) |
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74 return rc; |
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75 bzero(&sdp, sizeof sdp); |
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76 sdp.conn_ip = call->pstn_rtp_local.sin_addr; |
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77 sdp.conn_port = ntohs(call->pstn_rtp_local.sin_port); |
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78 sdp.codec_mask = call->use_pcma ? SDP_CODEC_MASK_PCMA |
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79 : SDP_CODEC_MASK_PCMU; |
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80 sdp.session_id = (sdp.conn_port << 16) | call->sdp_addend; |
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81 sdp.owner_ip = sip_bind_ip; |
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82 return out_msg_finish_sdp(msg, &sdp); |
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83 } |
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84 |
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85 static void |
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86 invite_new_call(req, ess, sin) |
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87 struct sip_pkt_rx *req; |
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88 struct uas_parse_hdrs *ess; |
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89 struct sockaddr_in *sin; |
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90 { |
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91 static unsigned cycle_tag_num, cycle_sdp_addend; |
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92 char uri_user[13], *called_nanp; |
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93 struct sip_msg_out resp; |
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94 struct grok_from gfrom; |
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95 struct supported_ext supp_ext; |
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96 char *hval, *unsup_ext; |
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97 int ext_100rel_req, ext_100rel_sup, use_100rel, use_pcma; |
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98 struct sdp_parse sdp_parse; |
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99 struct sdp_gen sdp_gen; |
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100 struct call *call; |
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101 char *dp; |
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102 unsigned req_uri_len, to_hdr_len, copylen; |
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103 int rc; |
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104 |
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105 /* extract called number from Request-URI */ |
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106 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
|
107 if (rc < 0) { |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
108 not_nanp: start_response_out_msg(&resp, |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
109 "416 Request-URI is not a NANP number"); |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
110 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
|
111 if (rc < 0) { |
49
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
112 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
|
113 "INVITE early error response length exceeded"); |
48
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
114 return; |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
115 } |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
116 out_msg_finish(&resp); |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
117 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
|
118 return; |
48
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 if (uri_user[0] == '+') { |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
121 if (grok_number_string(uri_user+1, 0) != 11 || |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
122 uri_user[1] != '1') |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
123 goto not_nanp; |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
124 called_nanp = uri_user + 2; |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
125 } else switch (grok_number_string(uri_user)) { |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
126 case 10: |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
127 called_nanp = uri_user; |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
128 break; |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
129 case 11: |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
130 if (uri_user[0] != '1') |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
131 goto not_nanp; |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
132 called_nanp = uri_user + 1; |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
133 break; |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
134 default: |
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 } |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
137 if (!is_nanp_valid_prefix(called_nanp)) |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
138 goto not_nanp; |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
139 /* 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
|
140 refresh_number_db(); |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
141 if (!is_nanp_locally_owned(called_nanp)) { |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
142 start_response_out_msg(&resp, |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
143 "404 Called number does not belong here"); |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
144 goto error_resp; |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
145 } |
51
36a30349b490
sip-in: parse INVITE From header
Mychaela Falconia <falcon@freecalypso.org>
parents:
50
diff
changeset
|
146 /* parse and validate From header */ |
36a30349b490
sip-in: parse INVITE From header
Mychaela Falconia <falcon@freecalypso.org>
parents:
50
diff
changeset
|
147 rc = grok_from_header(ess->from, &gfrom); |
36a30349b490
sip-in: parse INVITE From header
Mychaela Falconia <falcon@freecalypso.org>
parents:
50
diff
changeset
|
148 if (rc < 0) { |
36a30349b490
sip-in: parse INVITE From header
Mychaela Falconia <falcon@freecalypso.org>
parents:
50
diff
changeset
|
149 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
|
150 goto error_resp; |
36a30349b490
sip-in: parse INVITE From header
Mychaela Falconia <falcon@freecalypso.org>
parents:
50
diff
changeset
|
151 } |
76
21276f045026
sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents:
66
diff
changeset
|
152 /* 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
|
153 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
|
154 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
|
155 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
|
156 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
|
157 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
|
158 goto error_resp; |
21276f045026
sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents:
66
diff
changeset
|
159 } |
21276f045026
sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents:
66
diff
changeset
|
160 } 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
|
161 if (ess->to[0] != '<') |
21276f045026
sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents:
66
diff
changeset
|
162 goto bad_to_header; |
21276f045026
sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents:
66
diff
changeset
|
163 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
|
164 goto bad_to_header; |
21276f045026
sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents:
66
diff
changeset
|
165 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
|
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 } else |
21276f045026
sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents:
66
diff
changeset
|
168 goto bad_to_header; |
49
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
169 /* check 100rel and catch any unsupported requirements */ |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
170 supp_ext.name = "100rel"; |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
171 supp_ext.req_flag = &ext_100rel_req; |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
172 supp_ext.sup_flag = &ext_100rel_sup; |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
173 ext_100rel_req = ext_100rel_sup = 0; |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
174 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
|
175 if (rc < 0) { |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
176 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
|
177 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
|
178 if (rc < 0) |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
179 goto error_resp_toolong; |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
180 goto error_resp; |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
181 } |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
182 if (ext_100rel_req) |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
183 use_100rel = 1; |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
184 else if (ext_100rel_sup) |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
185 use_100rel = cfg_use_100rel; |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
186 else |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
187 use_100rel = 0; |
50
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
188 /* 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
|
189 if (!req->msg_body_len) { |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
190 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
|
191 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
|
192 if (rc < 0) |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
193 goto error_resp_toolong; |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
194 goto error_resp; |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
195 } |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
196 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
|
197 if (!hval) { |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
198 start_response_out_msg(&resp, |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
199 "415 Missing Content-Type header"); |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
200 goto error_415; |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
201 } |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
202 if (strcasecmp(hval, "application/sdp")) { |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
203 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
|
204 goto error_415; |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
205 } |
55
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
206 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
|
207 if (rc < 0) { |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
208 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
|
209 goto error_resp; |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
210 } |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
211 switch (sdp_parse.codec_mask) { |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
212 case SDP_CODEC_MASK_PCMU: |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
213 case SDP_CODEC_MASK_BOTH: |
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; |
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
219 break; |
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diff
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|
220 default: |
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diff
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|
221 start_response_out_msg(&resp, |
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51
diff
changeset
|
222 "488 Unsupported codec selection"); |
f1d59210f7b2
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Mychaela Falconia <falcon@freecalypso.org>
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51
diff
changeset
|
223 rc = add_resp_basic_headers(&resp, ess, req->req_method); |
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Mychaela Falconia <falcon@freecalypso.org>
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51
diff
changeset
|
224 if (rc < 0) |
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Mychaela Falconia <falcon@freecalypso.org>
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diff
changeset
|
225 goto error_resp_toolong; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
226 rc = out_msg_add_header(&resp, "Content-Type", |
f1d59210f7b2
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Mychaela Falconia <falcon@freecalypso.org>
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51
diff
changeset
|
227 "application/sdp"); |
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Mychaela Falconia <falcon@freecalypso.org>
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51
diff
changeset
|
228 if (rc < 0) |
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Mychaela Falconia <falcon@freecalypso.org>
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51
diff
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|
229 goto error_resp_toolong; |
f1d59210f7b2
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Mychaela Falconia <falcon@freecalypso.org>
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51
diff
changeset
|
230 bzero(&sdp_gen, sizeof sdp_gen); |
f1d59210f7b2
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Mychaela Falconia <falcon@freecalypso.org>
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51
diff
changeset
|
231 sdp_gen.owner_ip = sip_bind_ip; |
f1d59210f7b2
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Mychaela Falconia <falcon@freecalypso.org>
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51
diff
changeset
|
232 sdp_gen.conn_ip = sip_bind_ip; |
f1d59210f7b2
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
233 sdp_gen.codec_mask = SDP_CODEC_MASK_BOTH; |
f1d59210f7b2
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Mychaela Falconia <falcon@freecalypso.org>
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51
diff
changeset
|
234 rc = out_msg_finish_sdp(&resp, &sdp_gen); |
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Mychaela Falconia <falcon@freecalypso.org>
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diff
changeset
|
235 if (rc < 0) |
f1d59210f7b2
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Mychaela Falconia <falcon@freecalypso.org>
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diff
changeset
|
236 goto error_resp_toolong; |
f1d59210f7b2
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Mychaela Falconia <falcon@freecalypso.org>
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51
diff
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|
237 sip_tx_packet(&resp, sin); |
60
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57
diff
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|
238 return; |
55
f1d59210f7b2
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
239 } |
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diff
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|
240 /* 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>
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55
diff
changeset
|
241 rc = connect_gsm_mtcall(); |
d61d0136f6a5
sip-in INVITE processing: return "GSM service is offline" indication
Mychaela Falconia <falcon@freecalypso.org>
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55
diff
changeset
|
242 if (rc < 0) { |
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Mychaela Falconia <falcon@freecalypso.org>
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55
diff
changeset
|
243 start_response_out_msg(&resp, "480 GSM service is offline"); |
d61d0136f6a5
sip-in INVITE processing: return "GSM service is offline" indication
Mychaela Falconia <falcon@freecalypso.org>
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55
diff
changeset
|
244 goto error_resp; |
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Mychaela Falconia <falcon@freecalypso.org>
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55
diff
changeset
|
245 } |
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Mychaela Falconia <falcon@freecalypso.org>
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55
diff
changeset
|
246 /* stateful processing begins */ |
60
02761f1ae5e5
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Mychaela Falconia <falcon@freecalypso.org>
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57
diff
changeset
|
247 call = malloc(sizeof(struct call) + strlen(ess->call_id) + |
77
fe39404092d9
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Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
248 strlen(ess->from) + req_uri_len + strlen(ess->via) + 19); |
60
02761f1ae5e5
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57
diff
changeset
|
249 if (!call) { |
02761f1ae5e5
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57
diff
changeset
|
250 syslog(LOG_CRIT, "failed malloc for incoming call!"); |
02761f1ae5e5
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57
diff
changeset
|
251 start_response_out_msg(&resp, |
02761f1ae5e5
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57
diff
changeset
|
252 "503 Gateway resource allocation failure"); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
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57
diff
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|
253 goto error_resp; |
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57
diff
changeset
|
254 } |
77
fe39404092d9
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Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
255 cycle_tag_num++; |
fe39404092d9
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76
diff
changeset
|
256 if (cycle_tag_num >= 1000000) |
fe39404092d9
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Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
257 cycle_tag_num = 0; |
fe39404092d9
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Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
258 cycle_sdp_addend++; |
fe39404092d9
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Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
259 if (cycle_sdp_addend >= 0x10000) |
fe39404092d9
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Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
260 cycle_sdp_addend = 0; |
60
02761f1ae5e5
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Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
261 bzero(call, sizeof(struct call)); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
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57
diff
changeset
|
262 dp = (char *)(call + 1); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
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57
diff
changeset
|
263 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
|
264 call->sip_call_id = dp; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
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57
diff
changeset
|
265 bcopy(ess->call_id, dp, copylen); |
02761f1ae5e5
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57
diff
changeset
|
266 dp += copylen; |
02761f1ae5e5
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57
diff
changeset
|
267 copylen = strlen(ess->from) + 1; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
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parents:
57
diff
changeset
|
268 call->invite_from = dp; |
02761f1ae5e5
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57
diff
changeset
|
269 bcopy(ess->from, dp, copylen); |
02761f1ae5e5
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parents:
57
diff
changeset
|
270 dp += copylen; |
02761f1ae5e5
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Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
271 call->invite_to = dp; |
77
fe39404092d9
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Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
272 *dp++ = '<'; |
fe39404092d9
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Mychaela Falconia <falcon@freecalypso.org>
parents:
76
diff
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|
273 bcopy(req->req_uri, dp, req_uri_len); |
fe39404092d9
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Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
274 dp += req_uri_len; |
fe39404092d9
sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
275 *dp++ = '>'; |
fe39404092d9
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Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
276 sprintf(dp, ";tag=in%06u", cycle_tag_num); |
fe39404092d9
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Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
277 dp += 14; |
60
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
278 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
|
279 call->invite_via = dp; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
280 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
|
281 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
|
282 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
|
283 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
|
284 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
|
285 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
|
286 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
|
287 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
|
288 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
|
289 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
|
290 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
|
291 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
|
292 call->use_pcma = use_pcma; |
77
fe39404092d9
sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
293 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
|
294 /* generate 100 response */ |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
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57
diff
changeset
|
295 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
|
296 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
|
297 if (rc < 0) { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
298 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
|
299 free(call); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
300 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
301 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
302 out_msg_finish(&resp); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
303 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
|
304 /* add to call list */ |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
305 call->next = call_list; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
306 call_list = call; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
307 /* send CRCX to TMGW */ |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
308 tmgw_send_crcx(call); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
309 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
|
310 call->sip_state = SIP_STATE_INVITE_PROC; |
48
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
311 } |
60
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
312 |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
313 static void |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
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57
diff
changeset
|
314 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
|
315 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
|
316 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
|
317 struct sockaddr_in *sin; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
318 struct call *call; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
319 { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
320 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
|
321 int rc; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
322 |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
323 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
|
324 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
|
325 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
|
326 if (rc < 0) { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
327 syslog(LOG_ERR, |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
328 "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
|
329 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
330 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
331 out_msg_finish(&resp); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
332 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
|
333 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
334 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
335 /* 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
|
336 switch (call->sip_state) { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
337 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
|
338 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
|
339 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
|
340 out_msg_finish(&resp); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
341 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
|
342 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
343 case SIP_STATE_RINGING: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
344 case SIP_STATE_RINGING_PRACK: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
345 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
|
346 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
|
347 out_msg_finish(&resp); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
348 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
|
349 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
350 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
|
351 case SIP_STATE_CONNECTED: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
352 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
|
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; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
355 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
|
356 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
|
357 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
|
358 out_msg_finish(&resp); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
359 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
|
360 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
361 default: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
362 /* silently discard */ |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
363 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
364 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
365 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
366 |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
367 void |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
368 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
|
369 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
|
370 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
|
371 struct sockaddr_in *sin; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
372 { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
373 struct call *call; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
374 |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
375 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
|
376 if (call) |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
377 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
|
378 else |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
379 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
|
380 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
381 |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
382 void |
65
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
383 signal_invite_ringing(call) |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
384 struct call *call; |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
385 { |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
386 struct sip_msg_out resp; |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
387 |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
388 start_response_out_msg(&resp, "180 Ringing"); |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
389 fill_invite_resp_from_call(&resp, call); |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
390 out_msg_finish(&resp); |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
391 sip_tx_packet(&resp, &call->udp_sin); |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
392 call->sip_state = SIP_STATE_RINGING; |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
393 } |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
394 |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
395 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
|
396 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
|
397 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
|
398 { |
5beb51de1bae
sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents:
65
diff
changeset
|
399 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
|
400 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
|
401 |
5beb51de1bae
sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents:
65
diff
changeset
|
402 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
|
403 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
|
404 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
|
405 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
|
406 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
|
407 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
|
408 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
|
409 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
|
410 /* 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
|
411 return; |
5beb51de1bae
sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents:
65
diff
changeset
|
412 } |
5beb51de1bae
sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents:
65
diff
changeset
|
413 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
|
414 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
|
415 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
|
416 } |
5beb51de1bae
sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents:
65
diff
changeset
|
417 |
5beb51de1bae
sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents:
65
diff
changeset
|
418 void |
60
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
419 signal_invite_error(call) |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
420 struct call *call; |
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 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
|
423 int rc; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
424 |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
425 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
|
426 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
|
427 if (rc < 0) { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
428 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
|
429 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
|
430 /* 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
|
431 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
432 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
433 out_msg_finish(&resp); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
434 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
|
435 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
|
436 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
|
437 } |