FreeCalypso > hg > themwi-system-sw
view mncc/mtsock.c @ 63:e5aee661e3b2
sip-in: beginning to handle incoming MNCC messages from themwi-mncc
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 18 Sep 2022 15:01:11 -0800 |
parents | db7ed6a55ba4 |
children |
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/* * In this module we implement the MT call socket * to which other ThemWi system sw components connect * in order to send MT calls toward the GSM network. */ #include <sys/types.h> #include <sys/stat.h> #include <sys/socket.h> #include <sys/un.h> #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <syslog.h> #include <unistd.h> #include "../include/mncc.h" #include "struct.h" static char mtcall_socket_pathname[] = "/var/gsm/mtcall_socket"; int mtcall_listener; struct socket_conn *mtcall_socket_head; create_mtcall_socket() { struct sockaddr_un sa; unsigned sa_len; int rc; mtcall_listener = socket(AF_UNIX, SOCK_SEQPACKET, 0); if (mtcall_listener < 0) { syslog(LOG_CRIT, "socket(AF_UNIX, SOCK_SEQPACKET, 0): %m"); return(-1); } unlink(mtcall_socket_pathname); fill_sockaddr_un(mtcall_socket_pathname, &sa, &sa_len); rc = bind(mtcall_listener, (struct sockaddr *) &sa, sa_len); if (rc < 0) { syslog(LOG_ERR, "bind to %s: %m", mtcall_socket_pathname); return(-1); } rc = listen(mtcall_listener, 3); if (rc < 0) { syslog(LOG_CRIT, "listen on UNIX socket: %m"); return(-1); } chmod(mtcall_socket_pathname, 0775); update_max_fd(mtcall_listener); return(0); } void mtsock_accept_handler() { struct sockaddr_un sa; socklen_t sa_len; int fd; struct socket_conn *conn; sa_len = sizeof sa; fd = accept(mtcall_listener, (struct sockaddr *) &sa, &sa_len); if (fd < 0) { syslog(LOG_CRIT, "accept on UNIX socket: %m"); exit(1); } conn = malloc(sizeof(struct socket_conn)); if (!conn) { syslog(LOG_CRIT, "malloc for mtcall socket conn: %m"); close(fd); return; } syslog(LOG_INFO, "new MT call socket connection"); bzero(conn, sizeof(struct socket_conn)); conn->fd = fd; conn->next = mtcall_socket_head; mtcall_socket_head = conn; update_max_fd(fd); }