FreeCalypso > hg > fc-sim-tools

annotate serial/hexinput.c @ 93:6041c601304d

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fcsim1-mkprov: revert OTA key addition It appears that GrcardSIM2 cards (which is what we got for FCSIM1) do not support OTA after all, contrary to what we were previously led to believe by some tech support emails from Grcard - apparently those support emails and OTA descriptions referred to some other card model(s).
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 21 Apr 2021 05:38:39 +0000
parents be27d1c85861
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #include <sys/types.h>
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2 #include <ctype.h>
1
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3 #include <stdio.h>
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4
3
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5 static
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6 decode_hex_digit(c)
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7 {
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8 if (isdigit(c))
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9 return c - '0';
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10 else if (islower(c))
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11 return c - 'a' + 10;
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12 else
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13 return c - 'A' + 10;
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14 }
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16 parse_hex_input(inbuf, outbuf)
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17 char *inbuf;
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18 u_char *outbuf;
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19 {
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20 char *cp;
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21 unsigned count;
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22
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23 count = 0;
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24 for (cp = inbuf; ; ) {
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25 while (isspace(*cp))
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26 cp++;
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27 if (!*cp)
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28 break;
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29 if (!isxdigit(cp[0]) || !isxdigit(cp[1])) {
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30 printf("error: invalid hex APDU input\n");
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31 return(-1);
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32 }
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33 if (count >= 260) {
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34 printf("error: command APDU is too long\n");
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35 return(-1);
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36 }
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37 outbuf[count++] = (decode_hex_digit(cp[0]) << 4) |
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38 decode_hex_digit(cp[1]);
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39 cp += 2;
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40 }
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41 return count;
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42 }