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comparison rtp-mgr/ctrl_sock.c @ 179:b79d6334f543

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themwi-rtp-mgr: RTP port allocation split out of themwi-mgw
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 11 Mar 2023 20:19:14 -0800
parents mgw/ctrl_sock.c@cfc249906145
children
comparison
equal deleted inserted replaced
178:b259e2722485 179:b79d6334f543
1 /*
2 * In this module we implement the logic of listening on the RTP
3 * allocator control socket and accepting control connections.
4 */
5
6 #include <sys/types.h>
7 #include <sys/stat.h>
8 #include <sys/socket.h>
9 #include <sys/un.h>
10 #include <netinet/in.h>
11 #include <stdio.h>
12 #include <stdint.h>
13 #include <stdlib.h>
14 #include <string.h>
15 #include <strings.h>
16 #include <syslog.h>
17 #include <unistd.h>
18 #include "struct.h"
19 #include "select.h"
20
21 static char ctrl_socket_pathname[] = "/var/gsm/rtp_alloc_socket";
22
23 extern void ctrl_message_handler();
24
25 void
26 ctrlsock_accept_handler(listener_fd)
27 {
28 struct sockaddr_un sa;
29 socklen_t sa_len;
30 int conn_fd;
31
32 sa_len = sizeof sa;
33 conn_fd = accept(listener_fd, (struct sockaddr *) &sa, &sa_len);
34 if (conn_fd < 0) {
35 syslog(LOG_CRIT, "accept on UNIX socket: %m");
36 exit(1);
37 }
38 update_max_fd(conn_fd);
39 FD_SET(conn_fd, &select_for_read);
40 select_handlers[conn_fd] = ctrl_message_handler;
41 syslog(LOG_DEBUG, "accepted ctrl connection");
42 }
43
44 create_ctrl_socket()
45 {
46 struct sockaddr_un sa;
47 unsigned sa_len;
48 int fd, rc;
49
50 fd = socket(AF_UNIX, SOCK_SEQPACKET, 0);
51 if (fd < 0) {
52 syslog(LOG_CRIT, "socket(AF_UNIX, SOCK_SEQPACKET, 0): %m");
53 return(-1);
54 }
55 unlink(ctrl_socket_pathname);
56 fill_sockaddr_un(ctrl_socket_pathname, &sa, &sa_len);
57 rc = bind(fd, (struct sockaddr *) &sa, sa_len);
58 if (rc < 0) {
59 syslog(LOG_ERR, "bind to %s: %m", ctrl_socket_pathname);
60 return(-1);
61 }
62 rc = listen(fd, 3);
63 if (rc < 0) {
64 syslog(LOG_CRIT, "listen on UNIX socket: %m");
65 return(-1);
66 }
67 chmod(ctrl_socket_pathname, 0775);
68 update_max_fd(fd);
69 FD_SET(fd, &select_for_read);
70 select_handlers[fd] = ctrlsock_accept_handler;
71 return(0);
72 }