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annotate utils/sim-iccid-mkrange.c @ 72:5f7377392211

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doc/GrcardSIM1-notes article written
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 07 Apr 2021 05:18:17 +0000
parents 9c9f6adbaedb
children
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1 /*
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2 * This program is a special utility for generating lists of ICCIDs
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3 * following the 18+1 convention. The first argument is the starting
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4 * ICCID without Luhn (entered as shorthand, expanded to 18 digits),
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5 * the second argument is the number of consecutive ICCIDs to generate.
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6 * The output is a list of full 19-digit ICCIDs.
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7 */
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8
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9 #include <sys/types.h>
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10 #include <stdio.h>
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11 #include <stdlib.h>
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13 main(argc, argv)
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14 char **argv;
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15 {
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16 u_char digits[19];
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17 char asc[20];
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18 unsigned total, n;
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19 int rc;
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20
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21 if (argc != 3) {
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22 fprintf(stderr, "usage: %s start-iccid num-cards\n", argv[0]);
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23 exit(1);
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24 }
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25 rc = parse_decimal_shorthand(argv[1], digits, 18);
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26 if (rc < 0)
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27 exit(1); /* error msg already printed */
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28 total = atoi(argv[2]);
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29 for (n = 0; n < total; n++) {
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30 digits[18] = compute_iccid_luhn(digits);
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31 nibbles_to_ascii(digits, 19, asc);
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32 puts(asc);
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33 decimal_string_increment(digits, 18);
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34 }
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35 exit(0);
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36 }