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annotate pcsc/atrfunc.c @ 2:11f4f8a8fa33

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pcsc: ATR code refactoring
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 14 Mar 2021 01:22:37 +0000
parents f7a03e53bb2c
children
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1 #include <sys/types.h>
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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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8 extern SCARDCONTEXT hContext;
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9 extern SCARDHANDLE hCard;
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10
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11 #define MAX_ATR_BYTES 33
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13 retrieve_atr(head)
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14 char *head;
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15 {
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16 u_char atrbuf[MAX_ATR_BYTES];
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17 LONG rv;
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18 DWORD dwAttrLen;
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19 unsigned n;
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21 dwAttrLen = MAX_ATR_BYTES;
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22 rv = SCardGetAttrib(hCard, SCARD_ATTR_ATR_STRING, atrbuf, &dwAttrLen);
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23 if (rv != SCARD_S_SUCCESS) {
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24 fprintf(stderr, "SCardGetAttrib for ATR: %s\n",
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25 pcsc_stringify_error(rv));
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26 SCardReleaseContext(hContext);
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27 exit(1);
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28 }
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29 fputs(head, stdout);
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30 for (n = 0; n < dwAttrLen; n++) {
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31 printf(" %02X", atrbuf[n]);
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32 }
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33 putchar('\n');
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34 return(0);
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35 }