FreeCalypso > hg > themwi-system-sw

annotate utils/sip-udp-dump.c @ 128:5685412bd6aa

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sip-in: pass DTMF start & stop to themwi-mgw
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 01 Oct 2022 23:07:01 -0800
parents 5995660dcbac
children
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1 /*
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2 * This debug utility binds to UDP port 5060 (SIP) and dumps any/all
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3 * packets received at this port. A one-line summary is printed to
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4 * stdout, and the full SIP INVITE packet content is written to a file.
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5 */
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6
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7 #include <sys/types.h>
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8 #include <sys/socket.h>
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9 #include <netinet/in.h>
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10 #include <arpa/inet.h>
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11 #include <stdio.h>
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12 #include <stdlib.h>
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13 #include <string.h>
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14 #include <strings.h>
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15 #include <time.h>
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16 #include <unistd.h>
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17
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18 static int sock;
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19 static FILE *logf;
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20 static char dgram[4096];
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21 static unsigned dgram_len;
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22 static struct sockaddr_in sin;
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23 static time_t curtime;
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24
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25 static void
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26 log_full_packet()
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27 {
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28 fprintf(logf, "From %s:%u %u bytes %s", inet_ntoa(sin.sin_addr),
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29 ntohs(sin.sin_port), dgram_len, ctime(&curtime));
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30 fwrite(dgram, 1, dgram_len, logf);
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31 putc('\n', logf);
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32 fflush(logf);
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33 }
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34
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35 static void
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36 print_header_line()
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37 {
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38 char *cp;
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39
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40 cp = index(dgram, '\n');
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41 if (cp)
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42 *cp = '\0';
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43 puts(dgram);
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44 }
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45
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46 main(argc, argv)
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47 char **argv;
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48 {
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49 int rc;
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50 socklen_t addrlen;
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51
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52 if (argc != 2) {
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53 fprintf(stderr, "usage: %s logfile\n", argv[0]);
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54 exit(1);
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55 }
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56 logf = fopen(argv[1], "a");
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57 if (!logf) {
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58 perror(argv[1]);
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59 exit(1);
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60 }
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61 sock = socket(AF_INET, SOCK_DGRAM, 0);
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62 if (sock < 0) {
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63 perror("socket");
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64 exit(1);
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65 }
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66 sin.sin_family = AF_INET;
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67 sin.sin_addr.s_addr = INADDR_ANY;
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68 sin.sin_port = htons(5060);
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69 rc = bind(sock, (struct sockaddr *) &sin, sizeof sin);
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70 if (rc < 0) {
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71 perror("bind");
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72 exit(1);
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73 }
17
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74 for (;;) {
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75 addrlen = sizeof sin;
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76 rc = recvfrom(sock, dgram, sizeof(dgram) - 1, 0,
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77 (struct sockaddr *) &sin, &addrlen);
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78 if (rc < 0) {
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79 perror("recvfrom");
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80 exit(1);
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81 }
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82 time(&curtime);
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83 dgram_len = rc;
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84 dgram[dgram_len] = '\0';
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85 log_full_packet();
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86 print_header_line();
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87 }
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88 }