FreeCalypso > hg > themwi-system-sw
annotate mgw/ctrl_sock.c @ 211:fbfa72b114e8
sip-manual-out: prep for making PCM fill octet changeable
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 21 May 2023 15:33:00 -0800 |
parents | cfc249906145 |
children |
rev | line source |
---|---|
32
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
1 /* |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
2 * In this module we implement the logic of listening on the |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
3 * TMGW control socket and accepting control connections. |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
4 */ |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
5 |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
6 #include <sys/types.h> |
149
cfc249906145
mgw/ctrl_sock.c: #include <sys/stat.h> per chmod(2) man page
Mychaela Falconia <falcon@freecalypso.org>
parents:
127
diff
changeset
|
7 #include <sys/stat.h> |
127
f062c32a5116
mgw: implement DTMF
Mychaela Falconia <falcon@freecalypso.org>
parents:
95
diff
changeset
|
8 #include <sys/time.h> |
32
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
9 #include <sys/socket.h> |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
10 #include <sys/un.h> |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
11 #include <netinet/in.h> |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
12 #include <stdio.h> |
95
f280328e7e2e
themwi-mgw: initial implementation of PSTN to GSM forwarding
Mychaela Falconia <falcon@freecalypso.org>
parents:
35
diff
changeset
|
13 #include <stdint.h> |
32
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
14 #include <stdlib.h> |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
15 #include <string.h> |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
16 #include <strings.h> |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
17 #include <syslog.h> |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
18 #include <unistd.h> |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
19 #include "struct.h" |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
20 #include "select.h" |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
21 |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
22 static char ctrl_socket_pathname[] = "/var/gsm/tmgw_socket"; |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
23 |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
24 extern void ctrl_message_handler(); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
25 |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
26 void |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
27 ctrlsock_accept_handler(listener_fd) |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
28 { |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
29 struct sockaddr_un sa; |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
30 socklen_t sa_len; |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
31 int conn_fd; |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
32 struct ctrl_conn *conn; |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
33 |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
34 sa_len = sizeof sa; |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
35 conn_fd = accept(listener_fd, (struct sockaddr *) &sa, &sa_len); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
36 if (conn_fd < 0) { |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
37 syslog(LOG_CRIT, "accept on UNIX socket: %m"); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
38 exit(1); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
39 } |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
40 conn = malloc(sizeof(struct ctrl_conn)); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
41 if (!conn) { |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
42 syslog(LOG_CRIT, "malloc for ctrl socket conn: %m"); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
43 close(conn_fd); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
44 return; |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
45 } |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
46 bzero(conn, sizeof(struct ctrl_conn)); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
47 update_max_fd(conn_fd); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
48 FD_SET(conn_fd, &select_for_read); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
49 select_handlers[conn_fd] = ctrl_message_handler; |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
50 select_data[conn_fd] = (void *) conn; |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
51 syslog(LOG_INFO, "accepted ctrl connection"); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
52 } |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
53 |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
54 create_ctrl_socket() |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
55 { |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
56 struct sockaddr_un sa; |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
57 unsigned sa_len; |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
58 int fd, rc; |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
59 |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
60 fd = socket(AF_UNIX, SOCK_SEQPACKET, 0); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
61 if (fd < 0) { |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
62 syslog(LOG_CRIT, "socket(AF_UNIX, SOCK_SEQPACKET, 0): %m"); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
63 return(-1); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
64 } |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
65 unlink(ctrl_socket_pathname); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
66 fill_sockaddr_un(ctrl_socket_pathname, &sa, &sa_len); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
67 rc = bind(fd, (struct sockaddr *) &sa, sa_len); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
68 if (rc < 0) { |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
69 syslog(LOG_ERR, "bind to %s: %m", ctrl_socket_pathname); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
70 return(-1); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
71 } |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
72 rc = listen(fd, 3); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
73 if (rc < 0) { |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
74 syslog(LOG_CRIT, "listen on UNIX socket: %m"); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
75 return(-1); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
76 } |
35
db7ed6a55ba4
themwi-{mgw,mncc}: chmod connection-accepting sockets to 775
Mychaela Falconia <falcon@freecalypso.org>
parents:
32
diff
changeset
|
77 chmod(ctrl_socket_pathname, 0775); |
32
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
78 update_max_fd(fd); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
79 FD_SET(fd, &select_for_read); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
80 select_handlers[fd] = ctrlsock_accept_handler; |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
81 return(0); |
b3f74df7b808
beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
82 } |