FreeCalypso > hg > themwi-system-sw
annotate sip-in/invite_init.c @ 164:baaa6c1a3d3b
sip-out shutdown handling: always do check_dead_call()
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Wed, 12 Oct 2022 16:31:15 -0800 |
parents | 4b685a5d9bd4 |
children | 257da5474e77 |
rev | line source |
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1 /* |
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2 * Here we implement our initial processing of SIP INVITE requests. |
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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 <sys/time.h> |
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8 #include <netinet/in.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 "../libsip/parse.h" |
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16 #include "../libsip/uas_basic.h" |
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17 #include "../libsip/grok_from.h" |
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18 #include "../libsip/req_supp.h" |
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19 #include "../libsip/sdp.h" |
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20 #include "../libsip/out_msg.h" |
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21 #include "call.h" |
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22 |
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23 extern struct in_addr sip_bind_ip; |
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24 extern int cfg_use_100rel; |
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25 extern int cfg_force_pcma; |
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26 extern struct call *call_list; |
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27 |
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28 extern struct call *find_call_by_sip_id(); |
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29 extern char *get_single_header(); |
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30 |
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31 void |
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32 invite_new_call(req, ess, sin) |
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33 struct sip_pkt_rx *req; |
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34 struct uas_parse_hdrs *ess; |
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35 struct sockaddr_in *sin; |
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36 { |
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37 static unsigned cycle_tag_num, cycle_sdp_addend; |
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38 char uri_user[13], *called_nanp; |
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39 struct sip_msg_out resp; |
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40 struct grok_from gfrom; |
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41 struct supported_ext supp_ext; |
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42 char *hval, *unsup_ext; |
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43 int ext_100rel_req, ext_100rel_sup, use_100rel, use_pcma; |
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44 struct sdp_parse sdp_parse; |
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45 struct sdp_gen sdp_gen; |
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46 struct call *call; |
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47 char *dp, cdr_str[80]; |
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48 unsigned cdr_num_len, cdr_cnam_len; |
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49 unsigned req_uri_len, to_hdr_len, copylen; |
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50 int rc; |
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51 |
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52 /* extract called number from Request-URI */ |
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53 rc = user_from_sip_uri(req->req_uri, uri_user, 12); |
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54 if (rc < 0) { |
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55 not_nanp: start_response_out_msg(&resp, |
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56 "416 Request-URI is not a NANP number"); |
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57 error_resp: rc = add_resp_basic_headers(&resp, ess, req->req_method); |
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58 if (rc < 0) { |
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59 error_resp_toolong: syslog(LOG_ERR, |
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60 "INVITE early error response length exceeded"); |
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61 return; |
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62 } |
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63 out_msg_finish(&resp); |
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64 sip_tx_packet(&resp, sin); |
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65 return; |
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66 } |
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67 if (uri_user[0] == '+') { |
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68 if (grok_number_string(uri_user+1, 0) != 11 || |
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69 uri_user[1] != '1') |
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70 goto not_nanp; |
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71 called_nanp = uri_user + 2; |
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72 } else switch (grok_number_string(uri_user)) { |
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73 case 10: |
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74 called_nanp = uri_user; |
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75 break; |
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76 case 11: |
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77 if (uri_user[0] != '1') |
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78 goto not_nanp; |
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79 called_nanp = uri_user + 1; |
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80 break; |
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81 default: |
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82 goto not_nanp; |
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83 } |
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84 if (!is_nanp_valid_prefix(called_nanp)) |
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85 goto not_nanp; |
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86 /* it is valid NANP - but is it one of ours? */ |
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87 refresh_number_db(); |
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88 if (!is_nanp_locally_owned(called_nanp)) { |
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89 start_response_out_msg(&resp, |
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90 "404 Called number does not belong here"); |
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91 goto error_resp; |
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92 } |
51
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50
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93 /* parse and validate From header */ |
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50
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94 rc = grok_from_header(ess->from, &gfrom); |
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50
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95 if (rc < 0) { |
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50
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96 start_response_out_msg(&resp, "400 Malformed From header"); |
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50
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97 goto error_resp; |
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50
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98 } |
76
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66
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99 /* validate To header for the purpose of tag addition */ |
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66
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100 req_uri_len = strlen(req->req_uri); |
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66
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101 to_hdr_len = strlen(ess->to); |
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66
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102 if (to_hdr_len == req_uri_len) { |
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66
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103 if (strcasecmp(ess->to, req->req_uri)) { |
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66
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104 bad_to_header: start_response_out_msg(&resp, "400 Bad To header"); |
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66
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105 goto error_resp; |
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66
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106 } |
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66
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107 } else if (to_hdr_len == req_uri_len + 2) { |
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66
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108 if (ess->to[0] != '<') |
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66
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109 goto bad_to_header; |
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66
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110 if (strncasecmp(ess->to+1, req->req_uri, req_uri_len)) |
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66
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111 goto bad_to_header; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
66
diff
changeset
|
112 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
|
113 goto bad_to_header; |
21276f045026
sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents:
66
diff
changeset
|
114 } else |
21276f045026
sip-in: validate To header prior to tag addition
Mychaela Falconia <falcon@freecalypso.org>
parents:
66
diff
changeset
|
115 goto bad_to_header; |
49
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
116 /* check 100rel and catch any unsupported requirements */ |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
117 supp_ext.name = "100rel"; |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
118 supp_ext.req_flag = &ext_100rel_req; |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
119 supp_ext.sup_flag = &ext_100rel_sup; |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
120 ext_100rel_req = ext_100rel_sup = 0; |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
121 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
|
122 if (rc < 0) { |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
123 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
|
124 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
|
125 if (rc < 0) |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
126 goto error_resp_toolong; |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
127 goto error_resp; |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
128 } |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
129 if (ext_100rel_req) |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
130 use_100rel = 1; |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
131 else if (ext_100rel_sup) |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
132 use_100rel = cfg_use_100rel; |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
133 else |
dec31b1a8b96
sip-in: check Require and Supported
Mychaela Falconia <falcon@freecalypso.org>
parents:
48
diff
changeset
|
134 use_100rel = 0; |
50
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
135 /* 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
|
136 if (!req->msg_body_len) { |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
137 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
|
138 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
|
139 if (rc < 0) |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
140 goto error_resp_toolong; |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
141 goto error_resp; |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
142 } |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
143 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
|
144 if (!hval) { |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
145 start_response_out_msg(&resp, |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
146 "415 Missing Content-Type header"); |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
147 goto error_415; |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
148 } |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
149 if (strcasecmp(hval, "application/sdp")) { |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
150 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
|
151 goto error_415; |
daf1c26d7ae2
sip-in: check INVITE Content-Type header
Mychaela Falconia <falcon@freecalypso.org>
parents:
49
diff
changeset
|
152 } |
55
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
153 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
|
154 if (rc < 0) { |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
155 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
|
156 goto error_resp; |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
157 } |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
158 switch (sdp_parse.codec_mask) { |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
159 case SDP_CODEC_MASK_PCMU: |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
160 use_pcma = 0; |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
161 break; |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
162 case SDP_CODEC_MASK_PCMA: |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
163 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
|
164 use_pcma = 1; |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
165 break; |
104
ce3b1db7d1d7
sip-in: force-pcma-codec config option to use PCMA when both are offered
Mychaela Falconia <falcon@freecalypso.org>
parents:
77
diff
changeset
|
166 case SDP_CODEC_MASK_BOTH: |
ce3b1db7d1d7
sip-in: force-pcma-codec config option to use PCMA when both are offered
Mychaela Falconia <falcon@freecalypso.org>
parents:
77
diff
changeset
|
167 use_pcma = cfg_force_pcma; |
ce3b1db7d1d7
sip-in: force-pcma-codec config option to use PCMA when both are offered
Mychaela Falconia <falcon@freecalypso.org>
parents:
77
diff
changeset
|
168 break; |
55
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
169 default: |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
170 start_response_out_msg(&resp, |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
171 "488 Unsupported codec selection"); |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
172 rc = add_resp_basic_headers(&resp, ess, req->req_method); |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
173 if (rc < 0) |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
174 goto error_resp_toolong; |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
175 rc = out_msg_add_header(&resp, "Content-Type", |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
176 "application/sdp"); |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
177 if (rc < 0) |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
178 goto error_resp_toolong; |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
179 bzero(&sdp_gen, sizeof sdp_gen); |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
180 sdp_gen.owner_ip = sip_bind_ip; |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
181 sdp_gen.conn_ip = sip_bind_ip; |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
182 sdp_gen.codec_mask = SDP_CODEC_MASK_BOTH; |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
183 rc = out_msg_finish_sdp(&resp, &sdp_gen); |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
184 if (rc < 0) |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
185 goto error_resp_toolong; |
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
186 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
|
187 return; |
55
f1d59210f7b2
sip-in INVITE processing: grok SDP
Mychaela Falconia <falcon@freecalypso.org>
parents:
51
diff
changeset
|
188 } |
114
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
189 /* SIP INVITE validation done - gather CDR info */ |
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
190 cdr_num_len = gfrom.user_len; |
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
191 if (cdr_num_len > 33) |
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
192 cdr_num_len = 33; |
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
193 cdr_cnam_len = gfrom.cnam_len; |
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
194 if (cdr_cnam_len > 33) |
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
195 cdr_cnam_len = 33; |
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
196 if (cdr_cnam_len) |
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
197 sprintf(cdr_str, "%.*s (%s%.*s%s)", cdr_num_len, gfrom.user, |
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
198 gfrom.cnam_quoted ? "\"" : "", cdr_cnam_len, gfrom.cnam, |
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
199 gfrom.cnam_quoted ? "\"" : ""); |
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
200 else |
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
201 sprintf(cdr_str, "%.*s", cdr_num_len, gfrom.user); |
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
202 hval = get_single_header(req, "P-Asserted-Identity", (char *) 0, |
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
203 (int *) 0); |
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
204 /* check if GSM service is up */ |
57
d61d0136f6a5
sip-in INVITE processing: return "GSM service is offline" indication
Mychaela Falconia <falcon@freecalypso.org>
parents:
55
diff
changeset
|
205 rc = connect_gsm_mtcall(); |
d61d0136f6a5
sip-in INVITE processing: return "GSM service is offline" indication
Mychaela Falconia <falcon@freecalypso.org>
parents:
55
diff
changeset
|
206 if (rc < 0) { |
114
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
207 gsm_offline: syslog(LOG_INFO, "Down-call from %s to %s", cdr_str, uri_user); |
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
208 if (hval) |
117
c93c339271a7
sip-in CDR syslog: put a safety limit on string length
Mychaela Falconia <falcon@freecalypso.org>
parents:
114
diff
changeset
|
209 syslog(LOG_INFO, "Down-call PAI: %.100s", hval); |
114
a30c25fb4c2f
sip-in: generate CDR syslog entries
Mychaela Falconia <falcon@freecalypso.org>
parents:
113
diff
changeset
|
210 start_response_out_msg(&resp, "480 GSM service is offline"); |
57
d61d0136f6a5
sip-in INVITE processing: return "GSM service is offline" indication
Mychaela Falconia <falcon@freecalypso.org>
parents:
55
diff
changeset
|
211 goto error_resp; |
d61d0136f6a5
sip-in INVITE processing: return "GSM service is offline" indication
Mychaela Falconia <falcon@freecalypso.org>
parents:
55
diff
changeset
|
212 } |
107
372209628038
sip-in: handle themwi-mgw shutdown without terminating
Mychaela Falconia <falcon@freecalypso.org>
parents:
104
diff
changeset
|
213 rc = connect_tmgw_socket(); |
372209628038
sip-in: handle themwi-mgw shutdown without terminating
Mychaela Falconia <falcon@freecalypso.org>
parents:
104
diff
changeset
|
214 if (rc < 0) |
372209628038
sip-in: handle themwi-mgw shutdown without terminating
Mychaela Falconia <falcon@freecalypso.org>
parents:
104
diff
changeset
|
215 goto gsm_offline; |
57
d61d0136f6a5
sip-in INVITE processing: return "GSM service is offline" indication
Mychaela Falconia <falcon@freecalypso.org>
parents:
55
diff
changeset
|
216 /* stateful processing begins */ |
60
02761f1ae5e5
sip-in INVITE processing: got as far as CRCX completion
Mychaela Falconia <falcon@freecalypso.org>
parents:
57
diff
changeset
|
217 call = malloc(sizeof(struct call) + strlen(ess->call_id) + |
77
fe39404092d9
sip-in: generate To tags
Mychaela Falconia <falcon@freecalypso.org>
parents:
76
diff
changeset
|
218 strlen(ess->from) + req_uri_len + strlen(ess->via) + 19); |
60
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219 if (!call) { |
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220 syslog(LOG_CRIT, "failed malloc for incoming call!"); |
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221 start_response_out_msg(&resp, |
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222 "503 Gateway resource allocation failure"); |
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223 goto error_resp; |
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224 } |
77
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225 cycle_tag_num++; |
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226 if (cycle_tag_num >= 1000000) |
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227 cycle_tag_num = 0; |
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228 cycle_sdp_addend++; |
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229 if (cycle_sdp_addend >= 0x10000) |
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230 cycle_sdp_addend = 0; |
60
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231 bzero(call, sizeof(struct call)); |
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232 dp = (char *)(call + 1); |
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233 copylen = strlen(ess->call_id) + 1; |
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234 call->sip_call_id = dp; |
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235 bcopy(ess->call_id, dp, copylen); |
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236 dp += copylen; |
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237 copylen = strlen(ess->from) + 1; |
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238 call->invite_from = dp; |
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239 bcopy(ess->from, dp, copylen); |
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240 dp += copylen; |
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241 call->invite_to = dp; |
77
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242 *dp++ = '<'; |
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243 bcopy(req->req_uri, dp, req_uri_len); |
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244 dp += req_uri_len; |
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245 *dp++ = '>'; |
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246 sprintf(dp, ";tag=in%06u", cycle_tag_num); |
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247 dp += 14; |
60
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248 copylen = strlen(ess->via) + 1; |
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249 call->invite_via = dp; |
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250 bcopy(ess->via, dp, copylen); |
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251 call->invite_cseq = ess->cseq_num; |
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252 bcopy(sin, &call->udp_sin, sizeof(struct sockaddr_in)); |
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253 bcopy(called_nanp, call->called_nanp, 11); |
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254 call->from_uri = call->invite_from + (gfrom.uri - ess->from); |
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255 call->from_uri_len = gfrom.uri_len; |
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256 call->from_user = call->invite_from + (gfrom.user - ess->from); |
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257 call->from_user_len = gfrom.user_len; |
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258 call->use_100rel = use_100rel; |
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259 call->pstn_rtp_remote.sin_family = AF_INET; |
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260 call->pstn_rtp_remote.sin_addr = sdp_parse.ip_addr; |
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261 call->pstn_rtp_remote.sin_port = htons(sdp_parse.audio_port); |
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262 call->use_pcma = use_pcma; |
113
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110
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263 call->in_tag_num = cycle_tag_num; |
77
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264 call->sdp_addend = cycle_sdp_addend; |
60
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265 /* generate 100 response */ |
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266 start_response_out_msg(&resp, "100 Proceeding"); |
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267 rc = fill_invite_resp_from_call(&resp, call); |
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268 if (rc < 0) { |
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269 syslog(LOG_ERR, "INVITE 100 response length exceeded"); |
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270 free(call); |
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271 return; |
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272 } |
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273 out_msg_finish(&resp); |
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274 sip_tx_packet(&resp, sin); |
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275 /* add to call list */ |
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276 call->next = call_list; |
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|
277 call_list = call; |
114
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278 syslog(LOG_INFO, "Call in%06u from %s to %s", call->in_tag_num, |
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279 cdr_str, uri_user); |
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113
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280 if (hval) |
117
c93c339271a7
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Mychaela Falconia <falcon@freecalypso.org>
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114
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281 syslog(LOG_INFO, "Call in%06u PAI: %.100s", call->in_tag_num, |
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114
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|
282 hval); |
60
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|
283 /* send CRCX to TMGW */ |
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|
284 tmgw_send_crcx(call); |
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|
285 call->overall_state = OVERALL_STATE_CRCX; |
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|
286 call->sip_state = SIP_STATE_INVITE_PROC; |
48
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287 } |
60
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288 |
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diff
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|
289 void |
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diff
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|
290 handle_sip_invite(req, ess, sin) |
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diff
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|
291 struct sip_pkt_rx *req; |
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diff
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|
292 struct uas_parse_hdrs *ess; |
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diff
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|
293 struct sockaddr_in *sin; |
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diff
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|
294 { |
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diff
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|
295 struct call *call; |
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diff
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|
296 |
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|
297 call = find_call_by_sip_id(ess->call_id); |
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|
298 if (call) |
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diff
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|
299 invite_existing_call(req, ess, sin, call); |
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diff
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|
300 else |
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diff
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|
301 invite_new_call(req, ess, sin); |
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diff
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|
302 } |