TLV decoding works

[proxmark3-svn] / client / emv / tlv.h

diff --git a/client/emv/tlv.h b/client/emv/tlv.h
new file mode 100644 (file)
index 0000000..3fd3f34
--- /dev/null
+++ b/client/emv/tlv.h
@@ -0,0 +1,52 @@
+/*
+ * libopenemv - a library to work with EMV family of smart cards
+ * Copyright (C) 2012, 2015 Dmitry Eremin-Solenikov
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * https://github.com/lumag/emv-tools/blob/master/lib/include/openemv/tlv.h
+ */
+
+#ifndef TLV_H
+#define TLV_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+typedef uint16_t tlv_tag_t;
+
+struct tlv {
+       tlv_tag_t tag;
+       size_t len;
+       const unsigned char *value;
+};
+
+struct tlvdb;
+typedef bool (*tlv_cb)(void *data, const struct tlv *tlv);
+
+struct tlvdb *tlvdb_fixed(tlv_tag_t tag, size_t len, const unsigned char *value);
+struct tlvdb *tlvdb_external(tlv_tag_t tag, size_t len, const unsigned char *value);
+struct tlvdb *tlvdb_parse(const unsigned char *buf, size_t len);
+struct tlvdb *tlvdb_parse_multi(const unsigned char *buf, size_t len);
+void tlvdb_free(struct tlvdb *tlvdb);
+
+void tlvdb_add(struct tlvdb *tlvdb, struct tlvdb *other);
+
+void tlvdb_visit(const struct tlvdb *tlvdb, tlv_cb cb, void *data);
+const struct tlv *tlvdb_get(const struct tlvdb *tlvdb, tlv_tag_t tag, const struct tlv *prev);
+
+bool tlv_parse_tl(const unsigned char **buf, size_t *len, struct tlv *tlv);
+unsigned char *tlv_encode(const struct tlv *tlv, size_t *len);
+bool tlv_is_constructed(const struct tlv *tlv);
+bool tlv_equal(const struct tlv *a, const struct tlv *b);
+
+#endif