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annotate mncc/main.c @ 167:2ebad02adbe5

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themwi-mncc: route outbound calls to themwi-sip-out
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 12 Oct 2022 18:08:34 -0800
parents ccc5ab6d8388
children
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1 /*
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2 * Main module for ThemWi MNCC daemon.
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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/errno.h>
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7 #include <stdio.h>
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8 #include <stdint.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 #include "struct.h"
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16
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17 extern int mncc_socket;
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18 extern int mtcall_listener;
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19 extern struct socket_conn *mtcall_socket_head;
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20
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21 struct socket_conn outcall_conn;
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22
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23 static int max_fd;
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24
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25 update_max_fd(newfd)
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26 {
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27 if (newfd > max_fd)
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28 max_fd = newfd;
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29 }
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30
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31 main(argc, argv)
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32 char **argv;
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33 {
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34 fd_set fds;
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35 struct socket_conn *conn, **connp;
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36 int c;
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37
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38 openlog("themwi-mncc", 0, LOG_LOCAL5);
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39 if (read_number_db() < 0) {
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40 fprintf(stderr, "error reading number database\n");
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41 exit(1);
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42 }
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43 if (open_mncc_socket() < 0) {
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44 fprintf(stderr, "error connecting to GSM MNCC socket\n");
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45 exit(1);
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46 }
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47 if (create_mtcall_socket() < 0) {
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48 fprintf(stderr, "error creating MT call socket\n");
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49 exit(1);
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50 }
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51 signal(SIGPIPE, SIG_IGN);
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52 outcall_conn.fd = -1;
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53 /* main select loop */
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54 for (;;) {
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55 FD_ZERO(&fds);
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56 FD_SET(mncc_socket, &fds);
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57 FD_SET(mtcall_listener, &fds);
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58 for (connp = &mtcall_socket_head; conn = *connp; ) {
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59 if (conn->fd < 0) {
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60 *connp = conn->next;
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61 free(conn);
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62 continue;
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63 }
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64 FD_SET(conn->fd, &fds);
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65 connp = &conn->next;
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66 }
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67 if (outcall_conn.fd >= 0)
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68 FD_SET(outcall_conn.fd, &fds);
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69 c = select(max_fd+1, &fds, 0, 0, 0);
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70 if (c < 0) {
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71 if (errno == EINTR)
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72 continue;
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73 syslog(LOG_CRIT, "select: %m");
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74 exit(1);
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75 }
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76 if (FD_ISSET(mncc_socket, &fds))
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77 mncc_socket_select();
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78 if (FD_ISSET(mtcall_listener, &fds))
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79 mtsock_accept_handler();
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80 for (conn = mtcall_socket_head; conn; conn = conn->next)
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81 if (FD_ISSET(conn->fd, &fds))
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82 extsock_read_select(conn);
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83 if (outcall_conn.fd >= 0 && FD_ISSET(outcall_conn.fd, &fds))
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84 extsock_read_select(&outcall_conn);
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85 gc_call_list();
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86 }
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87 }