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annotate miscutil/tw5a-dump.c @ 585:3c6bf0d26ee7 default tip

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TW-TS-005 reader: fix maximum line length bug TW-TS-005 section 4.1 states: The maximum allowed length of each line is 80 characters, not including the OS-specific newline encoding. The implementation of this line length limit in the TW-TS-005 hex file reader function in the present suite was wrong, such that lines of the full maximum length could not be read. Fix it. Note that this bug affects comment lines too, not just actual RTP payloads. Neither Annex A nor Annex B features an RTP payload format that goes to the maximum of 40 bytes, but if a comment line goes to the maximum allowed length of 80 characters not including the terminating newline, the bug will be triggered, necessitating the present fix.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 25 Feb 2025 07:49:28 +0000
parents 86d4ec69b36c
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 * This program reads a TW-TS-005 Annex A hexadecimal file
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3 * and dumps all frames in human-readable form.
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4 */
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5
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6 #include <stdio.h>
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7 #include <stdint.h>
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8 #include <stdlib.h>
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9 #include <string.h>
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10 #include <strings.h>
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11 #include "../libgsmfr2/tw_gsmfr.h"
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12 #include "../libgsmefr/gsm_efr.h"
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13 #include "../libtest/tw5reader.h"
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14
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15 static void
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16 dump_fr_frame(frame)
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17 uint8_t *frame;
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18 {
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19 int16_t params[GSMFR_NUM_PARAMS];
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20 int i, j, n;
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21
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22 printf(" SID=%d LARc", gsmfr_preproc_sid_classify(frame));
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23 gsmfr_unpack_to_array(frame, params);
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24 n = 0;
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25 for (i = 0; i < 8; i++)
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26 printf(" %d", params[n++]);
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27 if (!bcmp(frame, gsmfr_decoder_homing_frame, GSMFR_RTP_FRAME_LEN))
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28 fputs(" (DHF)", stdout);
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29 putchar('\n');
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30 for (i = 0; i < 4; i++) {
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31 putchar(' ');
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32 for (j = 0; j < 17; j++)
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33 printf(" %d", params[n++]);
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34 putchar('\n');
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35 }
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36 }
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37
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38 static void
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39 dump_efr_frame(frame)
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40 uint8_t *frame;
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41 {
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42 int16_t params[EFR_NUM_PARAMS];
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43 int i, j, n;
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44
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45 printf(" SID=%d LPC", EFR_sid_classify(frame));
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46 EFR_frame2params(frame, params);
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47 n = 0;
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48 for (i = 0; i < 5; i++)
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49 printf(" %d", params[n++]);
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50 if (!bcmp(frame, EFR_decoder_homing_frame, EFR_RTP_FRAME_LEN))
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51 fputs(" (DHF)", stdout);
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52 putchar('\n');
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53 for (i = 0; i < 4; i++) {
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54 putchar(' ');
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55 for (j = 0; j < 13; j++)
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56 printf(" %d", params[n++]);
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57 putchar('\n');
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58 }
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59 }
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60
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61 main(argc, argv)
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62 char **argv;
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63 {
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64 FILE *hexf;
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65 unsigned lineno;
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66 uint8_t frame[TWTS005_MAX_FRAME];
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67 unsigned frame_len, bfi;
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68 int rc;
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69
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70 if (argc != 2) {
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71 fprintf(stderr, "usage: %s hex-file\n", argv[0]);
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72 exit(1);
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73 }
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74 hexf = fopen(argv[1], "r");
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75 if (!hexf) {
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76 perror(argv[1]);
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77 exit(1);
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78 }
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79 lineno = 0;
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80 for (;;) {
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81 rc = twts005_read_frame(hexf, &lineno, frame, &frame_len);
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82 if (rc < 0) {
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83 fprintf(stderr, "%s line %u: not valid TW-TS-005\n",
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84 argv[1], lineno);
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85 exit(1);
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86 }
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87 if (!rc)
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88 break;
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89 switch (frame_len) {
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90 case 0:
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91 printf("line %u: NULL frame\n", lineno);
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92 break;
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93 case 1:
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94 if ((frame[0] & 0xF6) != 0xE6)
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95 goto invalid;
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96 printf("line %u: No_Data frame\n", lineno);
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97 printf(" TEH=%02X (DTXd=%u TAF=%u)\n", frame[0],
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98 (frame[0] >> 3) & 1, frame[0] & 1);
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99 break;
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100 case GSMFR_RTP_FRAME_LEN:
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101 if ((frame[0] & 0xF0) != 0xD0)
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102 goto invalid;
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103 printf("line %u: FR basic frame\n", lineno);
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104 dump_fr_frame(frame);
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105 break;
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106 case GSMFR_RTP_FRAME_LEN+1:
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107 if ((frame[0] & 0xF4) != 0xE0)
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108 goto invalid;
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109 if ((frame[1] & 0xF0) != 0xD0)
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110 goto invalid;
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111 bfi = (frame[0] >> 1) & 1;
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112 printf("line %u: FR %s frame\n", lineno,
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113 bfi ? "bad" : "extended");
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114 printf(" TEH=%02X (DTXd=%u BFI=%u TAF=%u)\n", frame[0],
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115 (frame[0] >> 3) & 1, bfi, frame[0] & 1);
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116 dump_fr_frame(frame + 1);
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117 break;
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118 case EFR_RTP_FRAME_LEN:
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119 if ((frame[0] & 0xF0) != 0xC0)
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120 goto invalid;
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121 printf("line %u: EFR basic frame\n", lineno);
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122 dump_efr_frame(frame);
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123 break;
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124 case EFR_RTP_FRAME_LEN+1:
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125 if ((frame[0] & 0xF4) != 0xE0)
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126 goto invalid;
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127 if ((frame[1] & 0xF0) != 0xC0)
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128 goto invalid;
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129 bfi = (frame[0] >> 1) & 1;
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130 printf("line %u: EFR %s frame\n", lineno,
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131 bfi ? "bad" : "extended");
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132 printf(" TEH=%02X (DTXd=%u BFI=%u TAF=%u)\n", frame[0],
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133 (frame[0] >> 3) & 1, bfi, frame[0] & 1);
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134 dump_efr_frame(frame + 1);
23
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135 break;
523
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136 default:
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137 invalid:
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138 fprintf(stderr,
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139 "%s line %u: not a valid FR or EFR frame\n",
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140 argv[1], lineno);
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141 exit(1);
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142 }
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143 }
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144 exit(0);
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145 }