FreeCalypso > hg > themwi-system-sw
annotate sip-in/invite.c @ 105:9213ec8b434b
sip-in: handle themwi-mncc shutdown without terminating
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 27 Sep 2022 23:00:52 -0800 |
parents | ce3b1db7d1d7 |
children | 372209628038 |
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 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; |
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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; |
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96 struct supported_ext supp_ext; |
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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; |
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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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sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
107 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
|
108 if (rc < 0) { |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
109 not_nanp: start_response_out_msg(&resp, |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
110 "416 Request-URI is not a NANP number"); |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
111 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
|
112 if (rc < 0) { |
49
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
113 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
|
114 "INVITE early error response length exceeded"); |
48
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
115 return; |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
116 } |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
117 out_msg_finish(&resp); |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
118 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
|
119 return; |
48
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
120 } |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
121 if (uri_user[0] == '+') { |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
122 if (grok_number_string(uri_user+1, 0) != 11 || |
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
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
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|
219 break; |
104
ce3b1db7d1d7
sip-in: force-pcma-codec config option to use PCMA when both are offered
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77
diff
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|
220 case SDP_CODEC_MASK_BOTH: |
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77
diff
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|
221 use_pcma = cfg_force_pcma; |
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sip-in: force-pcma-codec config option to use PCMA when both are offered
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77
diff
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|
222 break; |
55
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diff
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|
223 default: |
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diff
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|
224 start_response_out_msg(&resp, |
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51
diff
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|
225 "488 Unsupported codec selection"); |
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diff
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|
226 rc = add_resp_basic_headers(&resp, ess, req->req_method); |
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Mychaela Falconia <falcon@freecalypso.org>
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|
227 if (rc < 0) |
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Mychaela Falconia <falcon@freecalypso.org>
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|
228 goto error_resp_toolong; |
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
229 rc = out_msg_add_header(&resp, "Content-Type", |
f1d59210f7b2
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Mychaela Falconia <falcon@freecalypso.org>
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51
diff
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|
230 "application/sdp"); |
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Mychaela Falconia <falcon@freecalypso.org>
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51
diff
changeset
|
231 if (rc < 0) |
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
232 goto error_resp_toolong; |
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Mychaela Falconia <falcon@freecalypso.org>
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51
diff
changeset
|
233 bzero(&sdp_gen, sizeof sdp_gen); |
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Mychaela Falconia <falcon@freecalypso.org>
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51
diff
changeset
|
234 sdp_gen.owner_ip = sip_bind_ip; |
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Mychaela Falconia <falcon@freecalypso.org>
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diff
changeset
|
235 sdp_gen.conn_ip = sip_bind_ip; |
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Mychaela Falconia <falcon@freecalypso.org>
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diff
changeset
|
236 sdp_gen.codec_mask = SDP_CODEC_MASK_BOTH; |
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Mychaela Falconia <falcon@freecalypso.org>
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diff
changeset
|
237 rc = out_msg_finish_sdp(&resp, &sdp_gen); |
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Mychaela Falconia <falcon@freecalypso.org>
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diff
changeset
|
238 if (rc < 0) |
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
239 goto error_resp_toolong; |
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Mychaela Falconia <falcon@freecalypso.org>
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51
diff
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|
240 sip_tx_packet(&resp, sin); |
60
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57
diff
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|
241 return; |
55
f1d59210f7b2
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
242 } |
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Mychaela Falconia <falcon@freecalypso.org>
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diff
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|
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>
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55
diff
changeset
|
244 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
|
245 if (rc < 0) { |
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Mychaela Falconia <falcon@freecalypso.org>
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55
diff
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|
246 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
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|
247 goto error_resp; |
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Mychaela Falconia <falcon@freecalypso.org>
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55
diff
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|
248 } |
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55
diff
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|
249 /* stateful processing begins */ |
60
02761f1ae5e5
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Mychaela Falconia <falcon@freecalypso.org>
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57
diff
changeset
|
250 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
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|
251 strlen(ess->from) + req_uri_len + strlen(ess->via) + 19); |
60
02761f1ae5e5
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57
diff
changeset
|
252 if (!call) { |
02761f1ae5e5
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57
diff
changeset
|
253 syslog(LOG_CRIT, "failed malloc for incoming call!"); |
02761f1ae5e5
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57
diff
changeset
|
254 start_response_out_msg(&resp, |
02761f1ae5e5
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57
diff
changeset
|
255 "503 Gateway resource allocation failure"); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
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57
diff
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|
256 goto error_resp; |
02761f1ae5e5
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Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
257 } |
77
fe39404092d9
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Mychaela Falconia <falcon@freecalypso.org>
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76
diff
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|
258 cycle_tag_num++; |
fe39404092d9
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76
diff
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|
259 if (cycle_tag_num >= 1000000) |
fe39404092d9
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76
diff
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|
260 cycle_tag_num = 0; |
fe39404092d9
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Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
261 cycle_sdp_addend++; |
fe39404092d9
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76
diff
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|
262 if (cycle_sdp_addend >= 0x10000) |
fe39404092d9
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Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
263 cycle_sdp_addend = 0; |
60
02761f1ae5e5
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Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
264 bzero(call, sizeof(struct call)); |
02761f1ae5e5
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57
diff
changeset
|
265 dp = (char *)(call + 1); |
02761f1ae5e5
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57
diff
changeset
|
266 copylen = strlen(ess->call_id) + 1; |
02761f1ae5e5
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57
diff
changeset
|
267 call->sip_call_id = dp; |
02761f1ae5e5
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57
diff
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|
268 bcopy(ess->call_id, dp, copylen); |
02761f1ae5e5
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57
diff
changeset
|
269 dp += copylen; |
02761f1ae5e5
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parents:
57
diff
changeset
|
270 copylen = strlen(ess->from) + 1; |
02761f1ae5e5
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parents:
57
diff
changeset
|
271 call->invite_from = dp; |
02761f1ae5e5
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Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
272 bcopy(ess->from, dp, copylen); |
02761f1ae5e5
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Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
273 dp += copylen; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
274 call->invite_to = dp; |
77
fe39404092d9
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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 bcopy(req->req_uri, dp, req_uri_len); |
fe39404092d9
sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
277 dp += req_uri_len; |
fe39404092d9
sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
278 *dp++ = '>'; |
fe39404092d9
sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
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76
diff
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|
279 sprintf(dp, ";tag=in%06u", cycle_tag_num); |
fe39404092d9
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Mychaela Falconia <falcon@freecalypso.org>
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76
diff
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|
280 dp += 14; |
60
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
281 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
|
282 call->invite_via = dp; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
283 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
|
284 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
|
285 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
|
286 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
|
287 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
|
288 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
|
289 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
|
290 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
|
291 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
|
292 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
|
293 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
|
294 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
|
295 call->use_pcma = use_pcma; |
77
fe39404092d9
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Mychaela Falconia <falcon@freecalypso.org>
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76
diff
changeset
|
296 call->sdp_addend = cycle_sdp_addend; |
60
02761f1ae5e5
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Mychaela Falconia <falcon@freecalypso.org>
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57
diff
changeset
|
297 /* 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
|
298 start_response_out_msg(&resp, "100 Proceeding"); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
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57
diff
changeset
|
299 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
|
300 if (rc < 0) { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
301 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
|
302 free(call); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
303 return; |
02761f1ae5e5
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Mychaela Falconia <falcon@freecalypso.org>
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57
diff
changeset
|
304 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
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57
diff
changeset
|
305 out_msg_finish(&resp); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
306 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
|
307 /* add to call list */ |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
308 call->next = call_list; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
309 call_list = call; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
310 /* send CRCX to TMGW */ |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
311 tmgw_send_crcx(call); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
312 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
|
313 call->sip_state = SIP_STATE_INVITE_PROC; |
48
8117d8ee44a5
sip-in: beginning of INVITE handling
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
314 } |
60
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
315 |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
316 static void |
02761f1ae5e5
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Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
317 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
|
318 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
|
319 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
|
320 struct sockaddr_in *sin; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
321 struct call *call; |
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 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
|
324 int rc; |
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 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
|
327 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
|
328 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
|
329 if (rc < 0) { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
330 syslog(LOG_ERR, |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
331 "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
|
332 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
333 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
334 out_msg_finish(&resp); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
335 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
|
336 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
337 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
338 /* 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
|
339 switch (call->sip_state) { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
340 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
|
341 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
|
342 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
|
343 out_msg_finish(&resp); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
344 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
|
345 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
346 case SIP_STATE_RINGING: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
347 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
|
348 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
|
349 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
|
350 out_msg_finish(&resp); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
351 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
|
352 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
353 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
|
354 case SIP_STATE_CONNECTED: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
355 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
|
356 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
|
357 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
358 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
|
359 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
|
360 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
|
361 out_msg_finish(&resp); |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
362 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
|
363 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
364 default: |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
365 /* silently discard */ |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
366 return; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
367 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
368 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
369 |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
370 void |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
371 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
|
372 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
|
373 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
|
374 struct sockaddr_in *sin; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
375 { |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
376 struct call *call; |
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 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
|
379 if (call) |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
380 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
|
381 else |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
382 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
|
383 } |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
384 |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
385 void |
65
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
386 signal_invite_ringing(call) |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
387 struct call *call; |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
388 { |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
389 struct sip_msg_out resp; |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
390 |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
391 start_response_out_msg(&resp, "180 Ringing"); |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
392 fill_invite_resp_from_call(&resp, call); |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
393 out_msg_finish(&resp); |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
394 sip_tx_packet(&resp, &call->udp_sin); |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
395 call->sip_state = SIP_STATE_RINGING; |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
396 } |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
397 |
7c0309df59f8
sip-in: handling of ALERTING state
Mychaela Falconia <falcon@freecalypso.org>
parents:
60
diff
changeset
|
398 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
|
399 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
|
400 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
|
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 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
|
403 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
|
404 |
5beb51de1bae
sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents:
65
diff
changeset
|
405 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
|
406 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
|
407 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
|
408 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
|
409 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
|
410 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
|
411 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
|
412 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
|
413 /* 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
|
414 return; |
5beb51de1bae
sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents:
65
diff
changeset
|
415 } |
5beb51de1bae
sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents:
65
diff
changeset
|
416 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
|
417 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
|
418 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
|
419 } |
5beb51de1bae
sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents:
65
diff
changeset
|
420 |
5beb51de1bae
sip-in: got as far as propagating GSM CC CONNECT to INVITE 200
Mychaela Falconia <falcon@freecalypso.org>
parents:
65
diff
changeset
|
421 void |
60
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
422 signal_invite_error(call) |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
423 struct call *call; |
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 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
|
426 int rc; |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
427 |
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
428 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
|
429 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
|
430 if (rc < 0) { |
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431 syslog(LOG_ERR, "INVITE late error response length exceeded"); |
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432 call->sip_state = SIP_STATE_MSG_SIZE_ERR; |
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433 /* TODO: transition from TEARDOWN to DEAD_SIP */ |
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434 return; |
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435 } |
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436 out_msg_finish(&resp); |
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437 sip_tx_packet(&resp, &call->udp_sin); |
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parents:
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438 call->sip_state = SIP_STATE_INVITE_ERR; |
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sip-in INVITE processing: got as far as CRCX completion
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parents:
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439 call->sip_tx_count = 1; |
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parents:
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440 } |