From 5fc01ff6f98d72219420bc29fb59d2d6eb93e887 Mon Sep 17 00:00:00 2001
From: laforge <laforge@e0336214-984f-0b4b-a45f-81c69e1f0ede>
Date: Sat, 22 Oct 2005 20:20:21 +0000
Subject: - add mifare classic support - move uid/pupi from l2 private data
 into l2 global data - various cleanups

git-svn-id: https://svn.gnumonks.org/trunk/librfid@1555 e0336214-984f-0b4b-a45f-81c69e1f0ede
---
 rfid_proto_mifare_classic.c | 144 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 144 insertions(+)
 create mode 100644 rfid_proto_mifare_classic.c

(limited to 'rfid_proto_mifare_classic.c')

diff --git a/rfid_proto_mifare_classic.c b/rfid_proto_mifare_classic.c
new file mode 100644
index 0000000..474f554
--- /dev/null
+++ b/rfid_proto_mifare_classic.c
@@ -0,0 +1,144 @@
+
+/* Mifare Classic implementation, PCD side.
+ *
+ * (C) 2005 by Harald Welte <laforge@gnumonks.org>
+ *
+ */
+
+/*
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 
+ *  as published by the Free Software Foundation
+ *
+ *  This program 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+#include <rfid/rfid.h>
+#include <rfid/rfid_protocol.h>
+#include <rfid/rfid_layer2.h>
+//#include <rfid/rfid_layer2_iso14443b.h>
+
+//#include <rfid/rfid_asic.h>
+#include <rfid/rfid_reader.h>
+
+#include "rfid_iso14443_common.h"
+
+
+#define MIFARE_UL_CMD_WRITE	0xA2
+#define MIFARE_UL_CMD_READ	0x30
+
+/* FIXME */
+#define MIFARE_UL_READ_FWT	100
+#define MIFARE_UL_WRITE_FWT	100
+
+static int
+mfcl_read(struct rfid_protocol_handle *ph, unsigned int page,
+	  unsigned char *rx_data, unsigned int *rx_len)
+{
+	unsigned char rx_buf[16];
+	unsigned int real_rx_len = sizeof(rx_buf);
+	unsigned char tx[2];
+	int ret;
+
+	if (page > 7)
+		return -EINVAL;
+
+	tx[0] = MIFARE_UL_CMD_READ;
+	tx[1] = page & 0xff;
+
+	ret = ph->l2h->l2->fn.transcieve(ph->l2h, tx, sizeof(tx), rx_buf,
+					 &real_rx_len, MIFARE_UL_READ_FWT, 0);
+
+	if (ret < 0)
+		return ret;
+
+	if (real_rx_len < *rx_len)
+		*rx_len = real_rx_len;
+
+	memcpy(rx_data, rx_buf, *rx_len);
+
+	return ret;
+}
+
+static int
+mfcl_write(struct rfid_protocol_handle *ph, unsigned int page,
+	   unsigned char *tx_data, unsigned int tx_len)
+{
+	unsigned int i;
+	unsigned char tx[6];
+	unsigned char rx[1];
+	unsigned int rx_len;
+	int ret;
+
+	if (tx_len != 4 || page > 7)
+		return -EINVAL;
+
+	tx[0] = MIFARE_UL_CMD_WRITE;
+	tx[1] = page & 0xff;
+
+	for (i = 0; i < 4; i++)
+		tx[2+i] = tx_data[i];
+
+	ret = ph->l2h->l2->fn.transcieve(ph->l2h, tx, sizeof(tx), rx,
+					 &rx_len, MIFARE_UL_WRITE_FWT, 0);
+					
+	/* FIXME:look at RX, check for ACK/NAK */
+
+	return ret;
+}
+
+static struct rfid_protocol_handle *
+mfcl_init(struct rfid_layer2_handle *l2h)
+{
+	struct rfid_protocol_handle *ph;
+	ph = malloc(sizeof(struct rfid_protocol_handle));
+	return ph;
+}
+
+static int mfcl_fini(struct rfid_protocol_handle *ph)
+{
+	free(ph);
+	return 0;
+}
+
+struct rfid_protocol rfid_protocol_mfcl = {
+	.id	= RFID_PROTOCOL_MIFARE_CLASSIC,
+	.name	= "Mifare Classic",
+	.fn	= {
+		.init 		= &mfcl_init,
+		.read		= &mfcl_read,
+		.write 		= &mfcl_write,
+		.fini		= &mfcl_fini,
+	},
+};
+
+int mfcl_set_key(struct rfid_protocol_handle *ph, unsigned char *key)
+{
+	if (!ph->l2h->rh->reader->mifare_classic.setkey)
+		return -ENODEV;
+
+	return ph->l2h->rh->reader->mifare_classic.setkey(ph->l2h->rh, key);
+}
+
+int mfcl_auth(struct rfid_protocol_handle *ph, u_int8_t cmd, u_int8_t block)
+{
+	u_int32_t serno = *((u_int32_t *)ph->l2h->uid);
+
+	if (!ph->l2h->rh->reader->mifare_classic.auth)
+		return -ENODEV;
+
+	return ph->l2h->rh->reader->mifare_classic.auth(ph->l2h->rh, cmd,
+						       serno, block);
+}
-- 
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