FreeCalypso > hg > themwi-system-sw

comparison sip-out/sip_uas.c @ 154:e54b0a9e322f

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beginning of themwi-sip-out
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 11 Oct 2022 23:04:01 -0800
parents sip-in/sip_uas.c@0d6435808bcd
children
comparison
equal deleted inserted replaced
153:99fd4ae573ae 154:e54b0a9e322f
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 }