FreeCalypso > hg > freecalypso-tools
annotate miscutil/make-imeisv.c @ 753:cae22bec3cba
compile-fc-batt2 utility written, compiles
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 05 Nov 2020 22:07:13 +0000 |
parents | 2dcfad8a3ed0 |
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rev | line source |
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2dcfad8a3ed0
make-imeisv utility written
Mychaela Falconia <falcon@freecalypso.org>
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1 /* |
2dcfad8a3ed0
make-imeisv utility written
Mychaela Falconia <falcon@freecalypso.org>
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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
Mychaela Falconia <falcon@freecalypso.org>
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4 * It is intended for use in shell scripts. |
2dcfad8a3ed0
make-imeisv utility written
Mychaela Falconia <falcon@freecalypso.org>
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5 */ |
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make-imeisv utility written
Mychaela Falconia <falcon@freecalypso.org>
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6 |
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7 #include <stdio.h> |
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8 #include <ctype.h> |
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Mychaela Falconia <falcon@freecalypso.org>
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9 #include <stdlib.h> |
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Mychaela Falconia <falcon@freecalypso.org>
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10 |
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make-imeisv utility written
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11 parse_imei_arg(input, buf) |
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Mychaela Falconia <falcon@freecalypso.org>
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12 char *input, *buf; |
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13 { |
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14 char *cp; |
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15 int i; |
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16 |
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Mychaela Falconia <falcon@freecalypso.org>
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17 cp = input; |
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Mychaela Falconia <falcon@freecalypso.org>
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18 if (!isdigit(*cp)) { |
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Mychaela Falconia <falcon@freecalypso.org>
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19 inv: fprintf(stderr, |
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20 "error: IMEI argument must have 15 decimal digits\n"); |
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21 exit(1); |
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22 } |
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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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Mychaela Falconia <falcon@freecalypso.org>
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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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Mychaela Falconia <falcon@freecalypso.org>
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41 dig = digits[i] - '0'; |
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Mychaela Falconia <falcon@freecalypso.org>
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42 if (i & 1) { |
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43 dig *= 2; |
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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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49 dig = sum % 10; |
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50 if (dig) |
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51 dig = 10 - dig; |
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52 if (digits[14] != dig + '0') { |
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Mychaela Falconia <falcon@freecalypso.org>
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53 fprintf(stderr, "error: given IMEI fails Luhn check\n"); |
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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); |
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Mychaela Falconia <falcon@freecalypso.org>
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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]) { |
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70 fprintf(stderr, |
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71 "error: SV argument must have 2 decimal digits\n"); |
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72 exit(1); |
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73 } |
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74 printf("%.8s-%.6s-%s\n", imeibuf, imeibuf + 8, argv[2]); |
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75 exit(0); |
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76 } |