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-rw-r--r--qemu/libcacard/vcardt.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/qemu/libcacard/vcardt.c b/qemu/libcacard/vcardt.c
new file mode 100644
index 000000000..c67de2f3c
--- /dev/null
+++ b/qemu/libcacard/vcardt.c
@@ -0,0 +1,40 @@
+#include <stdlib.h>
+#include <string.h>
+#include <glib.h>
+
+#include "vcardt.h"
+
+#include "vcardt_internal.h"
+
+/* create an ATR with appropriate historical bytes */
+#define ATR_TS_DIRECT_CONVENTION 0x3b
+#define ATR_TA_PRESENT 0x10
+#define ATR_TB_PRESENT 0x20
+#define ATR_TC_PRESENT 0x40
+#define ATR_TD_PRESENT 0x80
+
+unsigned char *vcard_alloc_atr(const char *postfix, int *atr_len)
+{
+ int postfix_len;
+ const char prefix[] = "VCARD_";
+ const char default_postfix[] = "DEFAULT";
+ const int prefix_len = sizeof(prefix) - 1;
+ int total_len;
+ unsigned char *atr;
+
+ if (postfix == NULL) {
+ postfix = default_postfix;
+ }
+ postfix_len = strlen(postfix);
+ total_len = 3 + prefix_len + postfix_len;
+ atr = g_malloc(total_len);
+ atr[0] = ATR_TS_DIRECT_CONVENTION;
+ atr[1] = ATR_TD_PRESENT + prefix_len + postfix_len;
+ atr[2] = 0x00;
+ memcpy(&atr[3], prefix, prefix_len);
+ memcpy(&atr[3 + prefix_len], postfix, postfix_len);
+ if (atr_len) {
+ *atr_len = total_len;
+ }
+ return atr;
+}