FreeCalypso > hg > themwi-system-sw
annotate sip-in/main.c @ 129:b7cd66acb123
README: update for current status
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 02 Oct 2022 11:48:12 -0800 |
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1 /* |
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2 * Main module for themwi-sip-in. |
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3 */ |
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4 |
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5 #include <sys/types.h> |
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6 #include <sys/time.h> |
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7 #include <sys/errno.h> |
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8 #include <stdio.h> |
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9 #include <stdlib.h> |
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10 #include <string.h> |
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11 #include <strings.h> |
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12 #include <signal.h> |
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13 #include <syslog.h> |
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14 #include <unistd.h> |
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15 |
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16 extern unsigned cfg_retrans_timeout; |
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17 |
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18 extern int gsm_socket, gsm_is_connected; |
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19 extern int mgw_socket, mgw_is_connected; |
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20 extern int sip_socket; |
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21 |
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22 static int max_fd; |
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23 |
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24 struct timeval cur_event_time; |
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25 |
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26 update_max_fd(newfd) |
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27 { |
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28 if (newfd > max_fd) |
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29 max_fd = newfd; |
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30 } |
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31 |
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32 main(argc, argv) |
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33 char **argv; |
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34 { |
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35 fd_set fds; |
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36 int rc, need_retrans, dead_sip_flag; |
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37 struct timeval timeout; |
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38 time_t dead_sip_time; |
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39 |
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40 openlog("themwi-sip-in", 0, LOG_LOCAL5); |
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41 read_config_file(); |
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42 if (read_number_db() < 0) { |
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43 fprintf(stderr, "error reading number database\n"); |
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44 exit(1); |
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45 } |
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46 if (open_sip_udp_socket() < 0) { |
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47 fprintf(stderr, "error opening SIP UDP socket\n"); |
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48 exit(1); |
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49 } |
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50 if (argv[1]) { |
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51 rc = open_sip_log_file(argv[1]); |
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52 if (rc < 0) |
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53 exit(1); /* error msg already printed */ |
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54 } |
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55 signal(SIGPIPE, SIG_IGN); |
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56 /* main select loop */ |
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57 for (;;) { |
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58 FD_ZERO(&fds); |
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59 FD_SET(sip_socket, &fds); |
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60 if (gsm_is_connected) |
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61 FD_SET(gsm_socket, &fds); |
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62 if (mgw_is_connected) |
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63 FD_SET(mgw_socket, &fds); |
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64 need_retrans = dead_sip_flag = 0; |
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65 scan_call_list_for_timeouts(&need_retrans, &dead_sip_flag, |
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66 &dead_sip_time); |
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67 if (need_retrans) { |
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68 timeout.tv_sec = cfg_retrans_timeout / 1000; |
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69 timeout.tv_usec = (cfg_retrans_timeout % 1000) * 1000; |
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70 rc = select(max_fd+1, &fds, 0, 0, &timeout); |
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71 } else if (dead_sip_flag) { |
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72 if (cur_event_time.tv_sec >= dead_sip_time) |
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73 timeout.tv_sec = 0; |
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74 else |
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75 timeout.tv_sec = |
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76 dead_sip_time - cur_event_time.tv_sec; |
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77 timeout.tv_usec = 0; |
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78 rc = select(max_fd+1, &fds, 0, 0, &timeout); |
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79 } else |
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80 rc = select(max_fd+1, &fds, 0, 0, 0); |
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81 if (rc < 0) { |
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82 if (errno == EINTR) |
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83 continue; |
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84 syslog(LOG_CRIT, "select: %m"); |
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85 exit(1); |
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86 } |
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87 gettimeofday(&cur_event_time, 0); |
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88 if (rc) { |
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89 if (gsm_is_connected && FD_ISSET(gsm_socket, &fds)) |
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90 gsm_socket_select(); |
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91 if (mgw_is_connected && FD_ISSET(mgw_socket, &fds)) |
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92 mgw_socket_select(); |
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93 if (FD_ISSET(sip_socket, &fds)) |
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94 sip_socket_select(); |
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95 } else if (need_retrans) |
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96 run_periodic_retrans(); |
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97 clear_dead_sip_calls(); |
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98 } |
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99 } |