FreeCalypso > hg > themwi-system-sw

annotate sip-manual-out/uac.c @ 85:70c3c8ebee33

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
sip-in: handle MNCC RTP bogons from OsmoMSC
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 20 Sep 2022 22:47:53 -0800
parents d7b6b8973a83
children a4450ae8fd09
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
71
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * Here we implement processing of SIP responses to the requests we sent out.
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 */
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 #include <sys/types.h>
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 #include <sys/socket.h>
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 #include <netinet/in.h>
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 #include <arpa/inet.h>
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 #include <stdio.h>
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 #include <stdlib.h>
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 #include <string.h>
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 #include <strings.h>
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 #include "../libsip/parse.h"
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 #include "../libsip/out_msg.h"
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 #define MAX_TO_TAG 63
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 extern char *get_single_header();
73
d7b6b8973a83 sip-manual-out: handle To tag
Mychaela Falconia <falcon@freecalypso.org>
parents: 71
diff changeset
19 extern char *extract_to_tag();
71
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 extern struct in_addr sip_bind_ip;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 extern unsigned sip_bind_port;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 extern char call_id[], from_uri[], to_uri[];
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 char to_tag[MAX_TO_TAG+1];
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 add_req_boilerplate(msg, cseq)
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 struct sip_msg_out *msg;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 char *cseq;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 {
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 char strbuf[256];
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 int rc;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 sprintf(strbuf, "SIP/2.0/UDP %s:%u",
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 inet_ntoa(sip_bind_ip), sip_bind_port);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 rc = out_msg_add_header(msg, "Via", strbuf);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 if (rc < 0)
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 return rc;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 rc = out_msg_add_header(msg, "From", from_uri);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 if (rc < 0)
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 return rc;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 if (to_tag[0]) {
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 sprintf(strbuf, "<%s>;tag=%s", to_uri, to_tag);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 rc = out_msg_add_header(msg, "To", strbuf);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 } else
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 rc = out_msg_add_header(msg, "To", to_uri);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 if (rc < 0)
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 return rc;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 rc = out_msg_add_header(msg, "Call-ID", call_id);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 if (rc < 0)
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 return rc;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 rc = out_msg_add_header(msg, "CSeq", cseq);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 if (rc < 0)
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 return rc;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 return out_msg_add_header(msg, "Max-Forwards", "70");
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 }
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 add_contact_header(msg)
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 struct sip_msg_out *msg;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 {
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 char strbuf[80];
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 sprintf(strbuf, "<sip:%s:%u;transport=udp>",
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 inet_ntoa(sip_bind_ip), sip_bind_port);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 return out_msg_add_header(msg, "Contact", strbuf);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 }
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 static void
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 send_ack(sin)
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 struct sockaddr_in *sin;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 {
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 struct sip_msg_out msg;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 int rc;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 rc = start_request_out_msg(&msg, "ACK", to_uri);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 if (rc < 0) {
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 msg_size_err: fprintf(stderr, "composing ACK message: size error\n");
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 return;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 }
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 rc = add_req_boilerplate(&msg, "1 ACK");
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 if (rc < 0)
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 goto msg_size_err;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 out_msg_finish(&msg);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 sip_tx_packet(&msg, sin);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 }
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 static void
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 handle_invite_response(msg, sin)
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89 struct sip_pkt_rx *msg;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90 struct sockaddr_in *sin;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 {
73
d7b6b8973a83 sip-manual-out: handle To tag
Mychaela Falconia <falcon@freecalypso.org>
parents: 71
diff changeset
92 char *tag;
d7b6b8973a83 sip-manual-out: handle To tag
Mychaela Falconia <falcon@freecalypso.org>
parents: 71
diff changeset
93
71
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94 printf("Response to INVITE: %s\n", msg->status_str);
73
d7b6b8973a83 sip-manual-out: handle To tag
Mychaela Falconia <falcon@freecalypso.org>
parents: 71
diff changeset
95 tag = extract_to_tag(msg, to_uri);
d7b6b8973a83 sip-manual-out: handle To tag
Mychaela Falconia <falcon@freecalypso.org>
parents: 71
diff changeset
96 if (tag) {
d7b6b8973a83 sip-manual-out: handle To tag
Mychaela Falconia <falcon@freecalypso.org>
parents: 71
diff changeset
97 printf("To tag: %s\n", tag);
d7b6b8973a83 sip-manual-out: handle To tag
Mychaela Falconia <falcon@freecalypso.org>
parents: 71
diff changeset
98 if (strlen(tag) <= MAX_TO_TAG)
d7b6b8973a83 sip-manual-out: handle To tag
Mychaela Falconia <falcon@freecalypso.org>
parents: 71
diff changeset
99 strcpy(to_tag, tag);
d7b6b8973a83 sip-manual-out: handle To tag
Mychaela Falconia <falcon@freecalypso.org>
parents: 71
diff changeset
100 else
d7b6b8973a83 sip-manual-out: handle To tag
Mychaela Falconia <falcon@freecalypso.org>
parents: 71
diff changeset
101 printf("To tag exceeds length limit!\n");
d7b6b8973a83 sip-manual-out: handle To tag
Mychaela Falconia <falcon@freecalypso.org>
parents: 71
diff changeset
102 }
71
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103 if (msg->status_code >= 200) {
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104 printf("Sending ACK\n");
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105 send_ack(sin);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106 }
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107 }
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
108
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
109 void
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
110 process_sip_response(msg, sin)
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111 struct sip_pkt_rx *msg;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
112 struct sockaddr_in *sin;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
113 {
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
114 char *call_id_hdr, *cseq_hdr;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
115
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
116 call_id_hdr = get_single_header(msg, "Call-ID", "i", (int *) 0);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 if (!call_id_hdr) {
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 printf("Got SIP response w/o Call-ID header\n");
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 return;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 }
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 if (strcmp(call_id_hdr, call_id)) {
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 printf("Got SIP response with wrong Call-ID\n");
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 return;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 }
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 cseq_hdr = get_single_header(msg, "CSeq", (char *) 0, (int *) 0);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 if (!cseq_hdr) {
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 printf("Got SIP response w/o CSeq header\n");
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 return;
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 }
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 if (!strcmp(cseq_hdr, "1 INVITE"))
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 handle_invite_response(msg, sin);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 else
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 printf("Got SIP resp for our Call-ID with unknown CSeq %s\n",
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 cseq_hdr);
d74b545a3c2a sip-manual-out: new test program
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 }