FreeCalypso > hg > themwi-system-sw
comparison sip-in/sip_uas.c @ 47:62f39c7cee15
themwi-sip-in skeleton started
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 06 Sep 2022 20:33:56 -0800 |
parents | |
children | 8117d8ee44a5 |
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46:5427b26525cd | 47:62f39c7cee15 |
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1 /* | |
2 * Basic UAS functions for themwi-sip-in. | |
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 <unistd.h> | |
14 #include "../libsip/parse.h" | |
15 #include "../libsip/uas_basic.h" | |
16 #include "../libsip/out_msg.h" | |
17 | |
18 static void | |
19 method_tbi(req, ess, sin) | |
20 struct sip_pkt_rx *req; | |
21 struct uas_parse_hdrs *ess; | |
22 struct sockaddr_in *sin; | |
23 { | |
24 syslog(LOG_ERR, "SIP method %s remains to be implemented", | |
25 req->req_method); | |
26 } | |
27 | |
28 static void | |
29 unsupported_method(req, ess, sin) | |
30 struct sip_pkt_rx *req; | |
31 struct uas_parse_hdrs *ess; | |
32 struct sockaddr_in *sin; | |
33 { | |
34 struct sip_msg_out resp; | |
35 int rc; | |
36 | |
37 start_response_out_msg(&resp, "405 Method not supported"); | |
38 rc = add_resp_basic_headers(&resp, ess, req->req_method); | |
39 if (rc < 0) { | |
40 too_long: syslog(LOG_ERR, "sending 405 error: response length exceeded"); | |
41 return; | |
42 } | |
43 rc = out_msg_add_header(&resp, "Allow", "INVITE,ACK,CANCEL,BYE"); | |
44 if (rc < 0) | |
45 goto too_long; | |
46 out_msg_finish(&resp); | |
47 sip_tx_packet(&resp, sin); | |
48 } | |
49 | |
50 void | |
51 process_sip_request(msg, sin) | |
52 struct sip_pkt_rx *msg; | |
53 struct sockaddr_in *sin; | |
54 { | |
55 struct uas_parse_hdrs ess; | |
56 int rc; | |
57 | |
58 rc = uas_get_basic_headers(msg, &ess); | |
59 if (rc < 0) { | |
60 syslog(LOG_ERR, "SIP %.16s request: bad or missing %s header", | |
61 msg->req_method, ess.error_field); | |
62 return; | |
63 } | |
64 /* dispatch by method */ | |
65 if (!strcmp(msg->req_method, "INVITE")) | |
66 method_tbi(msg, &ess, sin); | |
67 else if (!strcmp(msg->req_method, "ACK")) | |
68 method_tbi(msg, &ess, sin); | |
69 else if (!strcmp(msg->req_method, "CANCEL")) | |
70 method_tbi(msg, &ess, sin); | |
71 else if (!strcmp(msg->req_method, "BYE")) | |
72 method_tbi(msg, &ess, sin); | |
73 else | |
74 unsupported_method(msg, &ess, sin); | |
75 } |