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1 #include <stdio.h>
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2 #include <stdlib.h>
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3 #include <unistd.h>
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4 #include <sysexits.h>
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5 #include <fcntl.h>
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6 #include <sys/errno.h>
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7 #include <sys/ioctl.h>
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8 #include <sys/cdio.h>
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9
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10 int cddb_sum(int n);
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11 unsigned long cddb_discid(int tot_trks, struct cd_toc_entry *cdtoc);
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12 void usage(void);
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13
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14 int
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15 main(int argc, char **argv)
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16 {
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17 int cd_fd, tot_tracks, i, machine, disc_length, tracknums;
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18 unsigned long disc_id;
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19 struct ioc_toc_header toc_head;
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20 struct ioc_read_toc_entry toc_entries_head;
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21 struct cd_toc_entry *toc_entries;
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22 char cd_path[256], ch;
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23
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24 /* Default CD path */
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25 strcpy(cd_path, "/dev/cd0c");
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26
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27 /* Default to human readable */
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28 machine = 0;
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29
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30 /* Default to no track number stuff */
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31 tracknums = 0;
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32
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33 while ((ch = getopt(argc, argv, "f:mhn")) != -1) {
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34 switch(ch) {
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35 case 'f':
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36 if (strlen(optarg) > 255) {
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37 warnx("Filename too long");
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38 exit(EX_USAGE);
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39 }
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40
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41 strcpy(cd_path, optarg);
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42 break;
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43
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44 case 'm':
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45 machine = 1;
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46 break;
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47
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48 case 'n':
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49 tracknums = 1;
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50 break;
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51
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52 case '?':
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53 case 'h':
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54 default:
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55 usage();
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56 break;
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57 }
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58 }
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59
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60 if ((cd_fd = open(cd_path, O_RDWR)) == -1) {
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61 warnx("Failed to open %s, reason: %s", cd_path, strerror(errno));
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62 exit(EX_IOERR);
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63 }
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64
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65 if (ioctl(cd_fd, CDIOREADTOCHEADER, &toc_head) == -1) {
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66 warnx("Failed to get TOC header, reason: %s", strerror(errno));
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67 exit(EX_UNAVAILABLE);
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68 }
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69
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70 tot_tracks = toc_head.ending_track - toc_head.starting_track + 1;
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71
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72 toc_entries = (struct cd_toc_entry *)malloc(sizeof(struct cd_toc_entry) * (tot_tracks + 1));
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73 if (toc_entries == NULL) {
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74 warnx("Couldn't allocate memeory for TOC entries");
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75 exit(EX_UNAVAILABLE);
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76 }
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77
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78 toc_entries_head.data = toc_entries;
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79 toc_entries_head.data_len = sizeof(struct cd_toc_entry) * (tot_tracks + 1);
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80 toc_entries_head.starting_track = 0;
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81 toc_entries_head.address_format = CD_MSF_FORMAT;
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82
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83 if (ioctl(cd_fd, CDIOREADTOCENTRYS, &toc_entries_head) == -1) {
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84 warnx("Failed to get TOC entries, reason: %s\n", strerror(errno));
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85 exit(EX_UNAVAILABLE);
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86 }
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87
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88 if (tracknums) {
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89 for (i = 1; i <= tot_tracks; i++)
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90 if (!(toc_entries[i].control & 4))
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91 printf("%d ", i);
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92
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93 printf("\n");
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94
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95 exit(0);
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96 }
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97
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98 disc_id = cddb_discid(tot_tracks, toc_entries);
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99 disc_length = (toc_entries[tot_tracks].addr.msf.minute * 60) +
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100 (toc_entries[tot_tracks].addr.msf.second);
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101
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102 if (machine == 0) {
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103 printf("Start track = %d, end track = %d, length = %d\n", toc_head.starting_track,
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104 toc_head.ending_track, toc_head.len);
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105 printf("Disc ID is %08x\n", disc_id);
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106 printf("Length is %d seconds\n", disc_length);
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107 } else {
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108 printf("%08x", disc_id);
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109 }
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110
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111 for (i = 0; i < tot_tracks; i++) {
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112 if (machine == 0) {
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113 printf("Track %d, Minute = %d, Second = %d, Frame = %d, Type = %s, Offset = %d\n",
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114 toc_entries[i].track, toc_entries[i].addr.msf.minute,
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115 toc_entries[i].addr.msf.second, toc_entries[i].addr.msf.frame,
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116 (toc_entries[i].control & 4) ? "data" : "audio",
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117 (toc_entries[i].addr.msf.minute * 60 * 75) +
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118 (toc_entries[i].addr.msf.second * 75) +
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119 toc_entries[i].addr.msf.frame);
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120 } else {
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121 printf(" %d", (toc_entries[i].addr.msf.minute * 60 * 75) +
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122 (toc_entries[i].addr.msf.second * 75) +
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123 toc_entries[i].addr.msf.frame);
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124 }
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125
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126 }
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127
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128 if (machine == 1) {
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129 printf(" %d\n", disc_length);
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130 }
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131 }
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132
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133 int
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134 cddb_sum(int n)
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135 {
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136 int ret;
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137
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138 /* For backward compatibility this algorithm must not change */
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139
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140 ret = 0;
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141
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142 while (n > 0) {
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143 ret = ret + (n % 10);
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144 n = n / 10;
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145 }
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146
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147 return (ret);
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148 }
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149
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150 unsigned long
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151 cddb_discid(int tot_trks, struct cd_toc_entry *cdtoc)
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152 {
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153 int i,
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154 t = 0,
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155 n = 0;
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156
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157 /* For backward compatibility this algorithm must not change */
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158
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159 i = 0;
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160
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161 while (i < tot_trks) {
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162 n = n + cddb_sum((cdtoc[i].addr.msf.minute * 60)
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163 + cdtoc[i].addr.msf.second);
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164 i++;
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165 }
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166 t = ((cdtoc[tot_trks].addr.msf.minute * 60) +
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167 cdtoc[tot_trks].addr.msf.second) -
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168 ((cdtoc[0].addr.msf.minute * 60) +
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169 cdtoc[0].addr.msf.second);
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170
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171 return ((n % 0xff) << 24 | t << 8 | tot_trks);
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172 }
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173
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174 void
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175 usage(void)
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176 {
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177 printf("Usage:\n");
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178 printf("cddb-id [-f <cd-dev>] [-m]\n");
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179 printf("<cd-dev> is the cd device to use (Default: /dev/cd0c)\n");
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180 printf("-m causes machine readable output\n");
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181 exit(EX_USAGE);
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182 }
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