FreeCalypso > hg > rtp-debug-utils

annotate rtp-gsmfr-dump.c @ 6:709aa9ad72d1

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new program rtp-stream-dump
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 08 Jul 2023 20:30:33 +0000
parents 7c85a7a913f7
children
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1 /*
3
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2 * This program is a combination of rtp-gsmfr-extr and gsmrec-dump into
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3 * one step: it reads a pcap file, extracts packets belonging to a
0
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4 * particular RTP stream as identified by a source or destination
3
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5 * IP:port, verifies that an unbroken RTP stream is present, which is
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6 * expected to be in GSM FR or EFR codec, but instead of writing this
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7 * FR/EFR frame stream to a gsmx file, decodes it like gsmrec-dump.
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8 *
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9 * The advantage of this program over running rtp-gsmfr-extr followed
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10 * by gsmrec-dump is that TRAUlike Extension Headers (if present) are
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11 * dumped for analysis, rather than discarded.
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12 */
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13
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14 #include <sys/types.h>
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15 #include <sys/socket.h>
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16 #include <netinet/in.h>
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17 #include <arpa/inet.h>
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18 #include <stdio.h>
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19 #include <stdlib.h>
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20 #include <string.h>
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21 #include <strings.h>
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22 #include <pcap/pcap.h>
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23 #include <gsm.h>
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24 #include <gsm_efr.h>
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25
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26 static pcap_t *pcap;
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27 static in_addr_t match_ip_addr;
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28 static u_short match_udp_port;
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29 static unsigned iphdr_addr_offset, udphdr_port_offset;
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30 static unsigned link_hdr_len, ethertype_offset;
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31 static int stream_init_flag;
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32 static unsigned last_seq, last_tstamp, stream_ssrc;
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33 static gsm dummy_state;
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34
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35 static void
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36 check_dl_type()
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37 {
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38 int dltype;
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39
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40 dltype = pcap_datalink(pcap);
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41 switch (dltype) {
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42 case DLT_EN10MB:
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43 link_hdr_len = 14;
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44 ethertype_offset = 12;
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45 break;
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46 case DLT_RAW:
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47 link_hdr_len = 0;
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48 break;
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49 case DLT_LINUX_SLL:
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50 link_hdr_len = 16;
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51 ethertype_offset = 14;
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52 break;
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53 default:
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54 fprintf(stderr, "error: unsupported data link type %d\n",
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55 dltype);
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56 exit(1);
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57 }
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58 }
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59
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60 static void
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61 rtp_stream_logic(rtp_hdr, pkt_idx)
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62 u_char *rtp_hdr;
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63 unsigned pkt_idx;
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64 {
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65 unsigned cur_seq, cur_tstamp, cur_ssrc;
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66
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67 cur_seq = (rtp_hdr[2] << 8) | rtp_hdr[3];
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68 cur_tstamp = (rtp_hdr[4] << 24) | (rtp_hdr[5] << 16) |
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69 (rtp_hdr[6] << 8) | rtp_hdr[7];
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70 cur_ssrc = (rtp_hdr[8] << 24) | (rtp_hdr[9] << 16) |
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71 (rtp_hdr[10] << 8) | rtp_hdr[11];
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72 if (stream_init_flag) {
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73 if (cur_ssrc != stream_ssrc) {
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74 printf(
0
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75 "error in packet #%u: SSRC change from 0x%08X to 0x%08X\n",
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76 pkt_idx, stream_ssrc, cur_ssrc);
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77 } else if (cur_seq != last_seq + 1 &&
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78 (cur_seq != 0 || last_seq != 0xFFFF)) {
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79 printf(
0
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80 "error in packet #%u: seq break from 0x%04X to 0x%04X\n",
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81 pkt_idx, last_seq, cur_seq);
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82 } else if (cur_tstamp != last_tstamp + 160) {
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83 printf(
0
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84 "error in packet #%u: timestamp break from 0x%08X to 0x%08X\n",
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85 pkt_idx, last_tstamp, cur_tstamp);
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86 }
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87 } else
0
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88 stream_init_flag = 1;
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89 last_seq = cur_seq;
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90 last_tstamp = cur_tstamp;
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91 stream_ssrc = cur_ssrc;
0
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92 }
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93
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94 static void
3
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95 process_payload(payload, payload_len)
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96 u_char *payload;
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97 unsigned payload_len;
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98 {
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99 gsm_signal params[76];
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100 int i, j, n;
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101
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102 printf("seq 0x%04X ts 0x%08X: ", last_seq, last_tstamp);
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103 switch (payload_len) {
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104 case 0:
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105 printf("zero-length payload\n");
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106 return;
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107 case 1:
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108 if ((payload[0] & 0xF6) != 0xE6)
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109 break;
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110 printf("TEH 0x%02X\n", payload[0]);
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111 return;
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112 case 2:
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113 if (payload[0] != 0xBF)
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114 break;
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115 printf("old BFI TAF=%u\n", payload[1] & 1);
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116 return;
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117 case 31:
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118 if ((payload[0] & 0xF0) != 0xC0)
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119 break;
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120 printf("std EFR SID=%d LPC", EFR_sid_classify(payload));
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121 EFR_frame2params(payload, params);
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122 print_efr:
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123 n = 0;
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124 for (i = 0; i < 5; i++)
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125 printf(" %d", params[n++]);
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126 putchar('\n');
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127 for (i = 0; i < 4; i++) {
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128 putchar(' ');
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129 for (j = 0; j < 13; j++)
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diff changeset
130 printf(" %d", params[n++]);
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
131 putchar('\n');
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
132 }
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
133 return;
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
134 case 32:
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
135 if ((payload[0] & 0xF4) != 0xE0)
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
136 break;
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
137 if ((payload[1] & 0xF0) != 0xC0)
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
138 break;
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
139 printf("TEH 0x%02X EFR SID=%d LPC", payload[0],
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
140 EFR_sid_classify(payload+1));
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
141 EFR_frame2params(payload+1, params);
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
142 goto print_efr;
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
143 case 33:
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
144 if ((payload[0] & 0xF0) != 0xD0)
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
145 break;
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
146 fputs("std FR", stdout);
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
147 gsm_explode(dummy_state, payload, params);
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
148 print_fr:
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
149 n = 0;
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
150 for (i = 0; i < 8; i++)
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
151 printf(" %d", params[n++]);
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
152 putchar('\n');
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
153 for (i = 0; i < 4; i++) {
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
154 putchar(' ');
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
155 for (j = 0; j < 17; j++)
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
156 printf(" %d", params[n++]);
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
157 putchar('\n');
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
158 }
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
159 return;
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
160 case 34:
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
161 if ((payload[0] & 0xF4) != 0xE0)
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
162 break;
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
163 if ((payload[1] & 0xF0) != 0xD0)
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
164 break;
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
165 printf("TEH 0x%02X FR", payload[0]);
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
166 gsm_explode(dummy_state, payload+1, params);
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
167 goto print_fr;
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
168 }
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
169 printf("unknown payload format, length=%u\n", payload_len);
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
170 }
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
171
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
172 static void
0
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 process_packet(pkt, caplen, pkt_idx)
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 u_char *pkt;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 unsigned caplen, pkt_idx;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 {
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 unsigned udplen, payload_len;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 if (caplen < link_hdr_len + 28)
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 return;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 if (link_hdr_len) {
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 if (pkt[ethertype_offset] != 0x08)
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 return;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184 if (pkt[ethertype_offset+1] != 0x00)
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185 return;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 pkt += link_hdr_len;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 caplen -= link_hdr_len;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188 }
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 /* check IP header */
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
190 if (pkt[0] != 0x45)
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
191 return;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192 if (pkt[9] != 17) /* UDP */
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
193 return;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
194 if (bcmp(pkt + iphdr_addr_offset, &match_ip_addr, 4))
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
195 return;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196 /* check UDP header */
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197 if (bcmp(pkt + 20 + udphdr_port_offset, &match_udp_port, 2))
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198 return;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199 /* it is our target - now scrutinize it */
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200 udplen = (pkt[24] << 8) | pkt[25];
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201 if (caplen < udplen + 20) {
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202 fprintf(stderr,
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
203 "error: packet #%u is truncated in the capture\n",
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
204 pkt_idx);
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
205 exit(1);
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 }
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207 if (udplen < 20) {
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
208 fprintf(stderr,
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209 "error in packet #%u: UDP length is too short for RTP header\n",
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210 pkt_idx);
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
211 exit(1);
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
212 }
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
213 if (pkt[28] != 0x80) {
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
214 fprintf(stderr,
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
215 "error in packet #%u: unsupported RTP header structure\n",
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
216 pkt_idx);
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
217 exit(1);
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
218 }
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
219 rtp_stream_logic(pkt + 28, pkt_idx);
3
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
220 process_payload(pkt + 40, udplen - 20);
0
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
221 }
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
222
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
223 main(argc, argv)
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
224 char **argv;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
225 {
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
226 char errbuf[PCAP_ERRBUF_SIZE];
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
227 u_char *pkt;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
228 struct pcap_pkthdr pkthdr;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
229 unsigned pkt_idx;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
230
3
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
231 if (argc != 5) {
0
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
232 fprintf(stderr,
3
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
233 "usage: %s pcap-file src|dest ip-addr udp-port\n",
0
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
234 argv[0]);
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
235 exit(1);
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
236 }
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
237 pcap = pcap_open_offline(argv[1], errbuf);
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
238 if (!pcap) {
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
239 fprintf(stderr, "%s: %s\n", argv[1], errbuf);
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
240 exit(1);
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
241 }
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
242 check_dl_type();
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
243 if (!strcmp(argv[2], "src")) {
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
244 iphdr_addr_offset = 12;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
245 udphdr_port_offset = 0;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
246 } else if (!strcmp(argv[2], "dest")) {
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
247 iphdr_addr_offset = 16;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
248 udphdr_port_offset = 2;
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
249 } else {
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
250 fprintf(stderr,
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
251 "error: direction argument must be \"src\" or \"dest\"\n");
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
252 exit(1);
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
253 }
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
254 match_ip_addr = inet_addr(argv[3]);
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
255 if (match_ip_addr == INADDR_NONE) {
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
256 fprintf(stderr, "error: IP address argument is invalid\n");
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
257 exit(1);
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
258 }
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
259 match_udp_port = htons(strtoul(argv[4], 0, 0));
3
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
260 dummy_state = gsm_create();
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
261 if (!dummy_state) {
50aa973a91ef new program rtp-gsmfr-dump
Mychaela Falconia <falcon@freecalypso.org>
parents: 2
diff changeset
262 fprintf(stderr, "gsm_create() failed!\n");
0
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
263 exit(1);
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
264 }
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
265 for (pkt_idx = 0; ; pkt_idx++) {
05ff0f7ac977 initial commit: split from gsm-codec-lib
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
266 pkt = pcap_next(pcap, &pkthdr);
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267 if (!pkt)
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268 break;
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269 process_packet(pkt, (unsigned) pkthdr.caplen, pkt_idx);
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270 }
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271 if (!stream_init_flag) {
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272 fprintf(stderr, "error: specified RTP stream not found\n");
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273 exit(1);
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274 }
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275 exit(0);
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276 }