From 621d27cc64f984e435d3ee66846d29ac5f052ba6 Mon Sep 17 00:00:00 2001
From: laforge <laforge@e0336214-984f-0b4b-a45f-81c69e1f0ede>
Date: Thu, 7 Feb 2008 16:17:18 +0000
Subject: add (preliminary?) SAK based detection of mifare mini.

git-svn-id: https://svn.gnumonks.org/trunk/librfid@2073 e0336214-984f-0b4b-a45f-81c69e1f0ede
---
 src/rfid_layer2_iso14443a.c     |  6 ++++++
 src/rfid_proto_mifare_classic.c | 15 +++++++++++----
 2 files changed, 17 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/rfid_layer2_iso14443a.c b/src/rfid_layer2_iso14443a.c
index 281f709..90af0f2 100644
--- a/src/rfid_layer2_iso14443a.c
+++ b/src/rfid_layer2_iso14443a.c
@@ -250,6 +250,7 @@ cascade:
 
 	h->level = ISO14443A_LEVEL_NONE;
 	h->state = ISO14443A_STATE_SELECTED;
+	h->sak = sak[0];
 
 	if (sak[0] & 0x20) {
 		DEBUGP("we have a T=CL compliant PICC\n");
@@ -323,9 +324,14 @@ iso14443a_getopt(struct rfid_layer2_handle *handle, int optname,
 	int ret = -EINVAL;
 	struct iso14443a_handle *h = &handle->priv.iso14443a;
 	struct iso14443a_atqa *atqa = optval;
+	u_int8_t *opt_u8 = optval;
 	int *wupa = optval;
 
 	switch (optname) {
+	case RFID_OPT_14443A_SAK:
+		*opt_u8 = h->sak;
+		optlen = sizeof(*opt_u8);
+		break;
 	case RFID_OPT_14443A_ATQA:
 		*atqa = h->atqa;
 		ret = 0;
diff --git a/src/rfid_proto_mifare_classic.c b/src/rfid_proto_mifare_classic.c
index 003e8b0..66e4287 100644
--- a/src/rfid_proto_mifare_classic.c
+++ b/src/rfid_proto_mifare_classic.c
@@ -115,7 +115,9 @@ mfcl_getopt(struct rfid_protocol_handle *ph, int optname, void *optval,
 {
 	int ret = -EINVAL;
 	u_int8_t atqa[2];
+	u_int8_t sak;
 	unsigned int atqa_size = sizeof(atqa);
+	unsigned int sak_size = sizeof(sak);
 	unsigned int *size = optval;
 
 	switch (optname) {
@@ -126,10 +128,15 @@ mfcl_getopt(struct rfid_protocol_handle *ph, int optname, void *optval,
 		ret = 0;
 		rfid_layer2_getopt(ph->l2h, RFID_OPT_14443A_ATQA,
 				   atqa, &atqa_size);
-		/* FIXME: ATQA of mifare mini */
-		if (atqa[0] == 0x04 && atqa[1] == 0x00)
-			*size = 1024;
-		else if (atqa[0] == 0x02 && atqa[1] == 0x00)
+		rfid_layer2_getopt(ph->l2h, RFID_OPT_14443A_SAK,
+				   &sak, &sak_size);
+		if (atqa[0] == 0x04 && atqa[1] == 0x00) {
+			if (sak == 0x09) {
+				/* mifare mini */
+				*size = 320;
+			} else
+				*size = 1024;
+		} else if (atqa[0] == 0x02 && atqa[1] == 0x00)
 			*size = 4096;
 		else
 			ret = -EIO;
-- 
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