- fix mifare write support

[librfid] / src / rfid_proto_mifare_ul.c

diff --git a/src/rfid_proto_mifare_ul.c b/src/rfid_proto_mifare_ul.c
index 0ea55d2..8981b5e 100644 (file)
--- a/src/rfid_proto_mifare_ul.c
+++ b/src/rfid_proto_mifare_ul.c
@@ -112,6 +112,14 @@ static struct rfid_protocol_handle *
 mful_init(struct rfid_layer2_handle *l2h)
 {
        struct rfid_protocol_handle *ph;
+
+       if (l2h->l2->id != RFID_LAYER2_ISO14443A)
+               return NULL;
+       
+       /* according to "Functional Specification Rev. 3.0 */
+       if (l2h->uid_len != 7)
+               return NULL;
+
        ph = malloc_protocol_handle(sizeof(struct rfid_protocol_handle));
        return ph;
 }