41 lines
1.0 KiB
C
41 lines
1.0 KiB
C
#include <stdlib.h>
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#include <string.h>
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#include <glib.h>
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#include "libcacard/vcardt.h"
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#include "libcacard/vcardt_internal.h"
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/* create an ATR with appropriate historical bytes */
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#define ATR_TS_DIRECT_CONVENTION 0x3b
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#define ATR_TA_PRESENT 0x10
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#define ATR_TB_PRESENT 0x20
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#define ATR_TC_PRESENT 0x40
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#define ATR_TD_PRESENT 0x80
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unsigned char *vcard_alloc_atr(const char *postfix, int *atr_len)
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{
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int postfix_len;
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const char prefix[] = "VCARD_";
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const char default_postfix[] = "DEFAULT";
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const int prefix_len = sizeof(prefix) - 1;
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int total_len;
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unsigned char *atr;
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if (postfix == NULL) {
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postfix = default_postfix;
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}
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postfix_len = strlen(postfix);
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total_len = 3 + prefix_len + postfix_len;
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atr = g_malloc(total_len);
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atr[0] = ATR_TS_DIRECT_CONVENTION;
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atr[1] = ATR_TD_PRESENT + prefix_len + postfix_len;
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atr[2] = 0x00;
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memcpy(&atr[3], prefix, prefix_len);
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memcpy(&atr[3 + prefix_len], postfix, postfix_len);
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if (atr_len) {
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*atr_len = total_len;
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}
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return atr;
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}
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