FreeCalypso > hg > fc-pcsc-tools

annotate libcommon/atr.c @ 229:ed8cb3c0d312 default tip

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new README, indicating repository move
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 14 Mar 2021 18:26:13 +0000
parents f7145c77b7fb
children
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f7145c77b7fb starting libcommon: factored out of fc-simtool
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1 #include <sys/types.h>
f7145c77b7fb starting libcommon: factored out of fc-simtool
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2 #include <stdio.h>
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3 #include <stdlib.h>
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4 #include <pcsclite.h>
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5 #include <winscard.h>
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6 #include <reader.h>
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7 #include "cardif.h"
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8
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9 #define MAX_ATR_BYTES 33
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10
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11 retrieve_atr()
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12 {
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13 u_char atrbuf[MAX_ATR_BYTES];
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14 LONG rv;
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15 DWORD dwAttrLen;
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16 unsigned n;
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17
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18 dwAttrLen = MAX_ATR_BYTES;
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19 rv = SCardGetAttrib(hCard, SCARD_ATTR_ATR_STRING, atrbuf, &dwAttrLen);
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20 if (rv != SCARD_S_SUCCESS) {
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21 fprintf(stderr, "SCardGetAttrib for ATR: %s\n",
f7145c77b7fb starting libcommon: factored out of fc-simtool
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22 pcsc_stringify_error(rv));
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23 return(-1);
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24 }
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25 printf("ATR:");
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26 for (n = 0; n < dwAttrLen; n++)
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27 printf(" %02X", atrbuf[n]);
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28 putchar('\n');
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29 return(0);
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30 }