FreeCalypso > hg > themwi-system-sw

annotate mgw/ctrl_sock.c @ 134:2b03d2584f88

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
liboutrt: implement refresh
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 06 Oct 2022 23:31:37 -0800
parents f062c32a5116
children cfc249906145
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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>
127
f062c32a5116 mgw: implement DTMF
Mychaela Falconia <falcon@freecalypso.org>
parents: 95
diff changeset
7 #include <sys/time.h>
32
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 #include <sys/socket.h>
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 #include <sys/un.h>
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 #include <netinet/in.h>
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 #include <stdio.h>
95
f280328e7e2e themwi-mgw: initial implementation of PSTN to GSM forwarding
Mychaela Falconia <falcon@freecalypso.org>
parents: 35
diff changeset
12 #include <stdint.h>
32
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 #include <stdlib.h>
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 #include <string.h>
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 #include <strings.h>
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 #include <syslog.h>
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 #include <unistd.h>
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 #include "struct.h"
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 #include "select.h"
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 static char ctrl_socket_pathname[] = "/var/gsm/tmgw_socket";
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 extern void ctrl_message_handler();
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 void
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 ctrlsock_accept_handler(listener_fd)
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 {
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 struct sockaddr_un sa;
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 socklen_t sa_len;
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 int conn_fd;
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 struct ctrl_conn *conn;
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 sa_len = sizeof sa;
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 conn_fd = accept(listener_fd, (struct sockaddr *) &sa, &sa_len);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 if (conn_fd < 0) {
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 syslog(LOG_CRIT, "accept on UNIX socket: %m");
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 exit(1);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 }
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 conn = malloc(sizeof(struct ctrl_conn));
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 if (!conn) {
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 syslog(LOG_CRIT, "malloc for ctrl socket conn: %m");
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 close(conn_fd);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 return;
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 }
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 bzero(conn, sizeof(struct ctrl_conn));
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 update_max_fd(conn_fd);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 FD_SET(conn_fd, &select_for_read);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 select_handlers[conn_fd] = ctrl_message_handler;
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 select_data[conn_fd] = (void *) conn;
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 syslog(LOG_INFO, "accepted ctrl connection");
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 }
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 create_ctrl_socket()
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 {
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 struct sockaddr_un sa;
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 unsigned sa_len;
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 int fd, rc;
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 fd = socket(AF_UNIX, SOCK_SEQPACKET, 0);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 if (fd < 0) {
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 syslog(LOG_CRIT, "socket(AF_UNIX, SOCK_SEQPACKET, 0): %m");
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 return(-1);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 }
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 unlink(ctrl_socket_pathname);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 fill_sockaddr_un(ctrl_socket_pathname, &sa, &sa_len);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 rc = bind(fd, (struct sockaddr *) &sa, sa_len);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 if (rc < 0) {
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 syslog(LOG_ERR, "bind to %s: %m", ctrl_socket_pathname);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 return(-1);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 }
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 rc = listen(fd, 3);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 if (rc < 0) {
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 syslog(LOG_CRIT, "listen on UNIX socket: %m");
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 return(-1);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 }
35
db7ed6a55ba4 themwi-{mgw,mncc}: chmod connection-accepting sockets to 775
Mychaela Falconia <falcon@freecalypso.org>
parents: 32
diff changeset
76 chmod(ctrl_socket_pathname, 0775);
32
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 update_max_fd(fd);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 FD_SET(fd, &select_for_read);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 select_handlers[fd] = ctrlsock_accept_handler;
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 return(0);
b3f74df7b808 beginning of themwi-mgw
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 }