FreeCalypso > hg > freecalypso-tools

annotate miscutil/make-imeisv.c @ 995:74024eb17e04

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fc-loadtool help: improve language regarding 16 MiB flash chips In FC project history, 16 MiB flash originally meant Pirelli DP-L10. Then we got FCDEV3B with the same flash (our own design), but now we are discovering more Calypso devices that used such large flash, both late Calypso era (Sony Ericsson K2x0) as well as much earlier ones (FIC FLUID devices.txt file with 2004 dates, Leonardo+ rev 5). Hence we need to migrate to more generic or neutral language in associated documentation, without giving elevated status to specific examples that drove our early project history.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 03 Dec 2023 21:11:12 +0000
parents 2dcfad8a3ed0
children
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2dcfad8a3ed0 make-imeisv utility written
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
2dcfad8a3ed0 make-imeisv utility written
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2 * This utility constructs a 16-digit IMEISV from a 15-digit IMEI
2dcfad8a3ed0 make-imeisv utility written
Mychaela Falconia <falcon@freecalypso.org>
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3 * (which must have a valid Luhn check digit) and a 2-digit SV field.
2dcfad8a3ed0 make-imeisv utility written
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4 * It is intended for use in shell scripts.
2dcfad8a3ed0 make-imeisv utility written
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5 */
2dcfad8a3ed0 make-imeisv utility written
Mychaela Falconia <falcon@freecalypso.org>
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6
2dcfad8a3ed0 make-imeisv utility written
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7 #include <stdio.h>
2dcfad8a3ed0 make-imeisv utility written
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8 #include <ctype.h>
2dcfad8a3ed0 make-imeisv utility written
Mychaela Falconia <falcon@freecalypso.org>
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9 #include <stdlib.h>
2dcfad8a3ed0 make-imeisv utility written
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10
2dcfad8a3ed0 make-imeisv utility written
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11 parse_imei_arg(input, buf)
2dcfad8a3ed0 make-imeisv utility written
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12 char *input, *buf;
2dcfad8a3ed0 make-imeisv utility written
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13 {
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14 char *cp;
2dcfad8a3ed0 make-imeisv utility written
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15 int i;
2dcfad8a3ed0 make-imeisv utility written
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16
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17 cp = input;
2dcfad8a3ed0 make-imeisv utility written
Mychaela Falconia <falcon@freecalypso.org>
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18 if (!isdigit(*cp)) {
2dcfad8a3ed0 make-imeisv utility written
Mychaela Falconia <falcon@freecalypso.org>
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19 inv: fprintf(stderr,
2dcfad8a3ed0 make-imeisv utility written
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20 "error: IMEI argument must have 15 decimal digits\n");
2dcfad8a3ed0 make-imeisv utility written
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21 exit(1);
2dcfad8a3ed0 make-imeisv utility written
Mychaela Falconia <falcon@freecalypso.org>
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22 }
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Mychaela Falconia <falcon@freecalypso.org>
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23 for (i = 0; i < 15; i++) {
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Mychaela Falconia <falcon@freecalypso.org>
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24 if (ispunct(*cp))
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25 cp++;
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26 if (!isdigit(*cp))
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27 goto inv;
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28 buf[i] = *cp++;
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29 }
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30 if (*cp)
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31 goto inv;
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32 }
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33
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34 check_luhn(digits)
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35 char *digits;
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36 {
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37 int i, dig, sum;
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38
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39 sum = 0;
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40 for (i = 0; i < 14; i++) {
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41 dig = digits[i] - '0';
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42 if (i & 1) {
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43 dig *= 2;
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Mychaela Falconia <falcon@freecalypso.org>
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44 if (dig > 9)
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45 dig -= 9;
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46 }
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47 sum += dig;
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48 }
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Mychaela Falconia <falcon@freecalypso.org>
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49 dig = sum % 10;
2dcfad8a3ed0 make-imeisv utility written
Mychaela Falconia <falcon@freecalypso.org>
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50 if (dig)
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51 dig = 10 - dig;
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Mychaela Falconia <falcon@freecalypso.org>
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52 if (digits[14] != dig + '0') {
2dcfad8a3ed0 make-imeisv utility written
Mychaela Falconia <falcon@freecalypso.org>
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53 fprintf(stderr, "error: given IMEI fails Luhn check\n");
2dcfad8a3ed0 make-imeisv utility written
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54 exit(1);
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55 }
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Mychaela Falconia <falcon@freecalypso.org>
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56 }
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57
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58 main(argc, argv)
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59 char **argv;
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60 {
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61 char imeibuf[15];
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62
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63 if (argc != 3) {
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64 fprintf(stderr, "usage: %s IMEI SV\n", argv[0]);
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65 exit(1);
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66 }
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67 parse_imei_arg(argv[1], imeibuf);
2dcfad8a3ed0 make-imeisv utility written
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68 check_luhn(imeibuf);
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69 if (!isdigit(argv[2][0]) || !isdigit(argv[2][1]) || argv[2][2]) {
2dcfad8a3ed0 make-imeisv utility written
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70 fprintf(stderr,
2dcfad8a3ed0 make-imeisv utility written
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71 "error: SV argument must have 2 decimal digits\n");
2dcfad8a3ed0 make-imeisv utility written
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72 exit(1);
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73 }
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Mychaela Falconia <falcon@freecalypso.org>
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74 printf("%.8s-%.6s-%s\n", imeibuf, imeibuf + 8, argv[2]);
2dcfad8a3ed0 make-imeisv utility written
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75 exit(0);
2dcfad8a3ed0 make-imeisv utility written
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76 }