FreeCalypso > hg > themwi-system-sw
view sip-in/main.c @ 217:9f6a148ceb25
tcpserv-dump: brown paper bag
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 24 Jul 2023 22:33:01 -0800 |
parents | 6aa63cf4620a |
children |
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/* * Main module for themwi-sip-in. */ #include <sys/types.h> #include <sys/time.h> #include <sys/errno.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <signal.h> #include <syslog.h> #include <unistd.h> extern unsigned cfg_retrans_timeout; extern int gsm_socket, gsm_is_connected; extern int mgw_socket, mgw_is_connected; extern int sip_socket; static int max_fd; struct timeval cur_event_time; update_max_fd(newfd) { if (newfd > max_fd) max_fd = newfd; } main(argc, argv) char **argv; { fd_set fds; int rc, need_retrans, dead_sip_flag; struct timeval timeout; time_t dead_sip_time; openlog("themwi-sip-in", 0, LOG_LOCAL5); read_config_file(); if (read_number_db() < 0) { fprintf(stderr, "error reading number database\n"); exit(1); } if (open_sip_udp_socket() < 0) { fprintf(stderr, "error opening SIP UDP socket\n"); exit(1); } if (argv[1]) { rc = open_sip_log_file(argv[1]); if (rc < 0) exit(1); /* error msg already printed */ } signal(SIGPIPE, SIG_IGN); /* main select loop */ for (;;) { FD_ZERO(&fds); FD_SET(sip_socket, &fds); if (gsm_is_connected) FD_SET(gsm_socket, &fds); if (mgw_is_connected) FD_SET(mgw_socket, &fds); need_retrans = dead_sip_flag = 0; scan_call_list_for_timeouts(&need_retrans, &dead_sip_flag, &dead_sip_time); if (need_retrans) { timeout.tv_sec = cfg_retrans_timeout / 1000; timeout.tv_usec = (cfg_retrans_timeout % 1000) * 1000; rc = select(max_fd+1, &fds, 0, 0, &timeout); } else if (dead_sip_flag) { if (cur_event_time.tv_sec >= dead_sip_time) timeout.tv_sec = 0; else timeout.tv_sec = dead_sip_time - cur_event_time.tv_sec; timeout.tv_usec = 0; rc = select(max_fd+1, &fds, 0, 0, &timeout); } else rc = select(max_fd+1, &fds, 0, 0, 0); if (rc < 0) { if (errno == EINTR) continue; syslog(LOG_CRIT, "select: %m"); exit(1); } gettimeofday(&cur_event_time, 0); if (rc) { if (gsm_is_connected && FD_ISSET(gsm_socket, &fds)) gsm_socket_select(); if (mgw_is_connected && FD_ISSET(mgw_socket, &fds)) mgw_socket_select(); if (FD_ISSET(sip_socket, &fds)) sip_socket_select(); } else if (need_retrans) run_periodic_retrans(); clear_dead_sip_calls(); } }