FreeCalypso > hg > themwi-system-sw
comparison sip-out/sip_uas.c @ 154:e54b0a9e322f
beginning of themwi-sip-out
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 11 Oct 2022 23:04:01 -0800 |
parents | sip-in/sip_uas.c@0d6435808bcd |
children |
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153:99fd4ae573ae | 154:e54b0a9e322f |
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1 /* | |
2 * Basic UAS functions for themwi-sip-out. | |
3 */ | |
4 | |
5 #include <sys/types.h> | |
6 #include <sys/socket.h> | |
7 #include <netinet/in.h> | |
8 #include <stdio.h> | |
9 #include <stdlib.h> | |
10 #include <string.h> | |
11 #include <strings.h> | |
12 #include <syslog.h> | |
13 #include "../libsip/parse.h" | |
14 #include "../libsip/uas_basic.h" | |
15 #include "../libsip/out_msg.h" | |
16 | |
17 static void | |
18 unsupported_method(req, ess, sin) | |
19 struct sip_pkt_rx *req; | |
20 struct uas_parse_hdrs *ess; | |
21 struct sockaddr_in *sin; | |
22 { | |
23 struct sip_msg_out resp; | |
24 int rc; | |
25 | |
26 start_response_out_msg(&resp, "501 Method not supported"); | |
27 rc = add_resp_basic_headers(&resp, ess, req->req_method); | |
28 if (rc < 0) { | |
29 too_long: syslog(LOG_ERR, "sending 501 error: response length exceeded"); | |
30 return; | |
31 } | |
32 rc = out_msg_add_header(&resp, "Allow", "INVITE,ACK,BYE"); | |
33 if (rc < 0) | |
34 goto too_long; | |
35 out_msg_finish(&resp); | |
36 sip_tx_packet(&resp, sin); | |
37 } | |
38 | |
39 void | |
40 process_sip_request(msg, sin) | |
41 struct sip_pkt_rx *msg; | |
42 struct sockaddr_in *sin; | |
43 { | |
44 struct uas_parse_hdrs ess; | |
45 int rc; | |
46 | |
47 rc = uas_get_basic_headers(msg, &ess); | |
48 if (rc < 0) { | |
49 syslog(LOG_ERR, "SIP %.16s request: bad or missing %s header", | |
50 msg->req_method, ess.error_field); | |
51 return; | |
52 } | |
53 /* dispatch by method */ | |
54 if (!strcmp(msg->req_method, "INVITE")) | |
55 handle_invite_req(msg, &ess, sin); | |
56 else if (!strcmp(msg->req_method, "ACK")) | |
57 return; /* no handling required */ | |
58 else if (!strcmp(msg->req_method, "BYE")) | |
59 handle_bye_req(msg, &ess, sin); | |
60 else | |
61 unsupported_method(msg, &ess, sin); | |
62 } |