CHG: fixed a better detection for Ultralight, Ultralight-C, Ultralight-EV1 tags.

      --see https://github.com/Proxmark/proxmark3/issues/96
      -- still todo,  finding a good way of detecting Magic Ultralight-C tags.
      -- thanks @marshmellow for pointing out proper UL-C tags responses is different.

diff --git a/client/cmdhf14a.c b/client/cmdhf14a.c
index 1a31c71f101b82d019c3b11e86e3a61b32f541ab..15faa2bc4c14612490bc051fdc1bbdd675b722a1 100644 (file)
--- a/client/cmdhf14a.c
+++ b/client/cmdhf14a.c
@@ -163,17 +163,10 @@ int CmdHF14AReader(const char *Cmd)
                return 0;
        }
 
-
-       PrintAndLog("ATQA : %02x %02x", card.atqa[1], card.atqa[0]);
        PrintAndLog(" UID : %s", sprint_hex(card.uid, card.uidlen));
+       PrintAndLog("ATQA : %02x %02x", card.atqa[1], card.atqa[0]);
        PrintAndLog(" SAK : %02x [%d]", card.sak, resp.arg[0]);
 
-       // Double & triple sized UID, can be mapped to a manufacturer.
-       // HACK: does this apply for Ultralight cards?
-       if ( card.uidlen > 4 ) {
-               PrintAndLog("MANUFACTURER : %s", getTagInfo(card.uid[0]));
-       }
-
        switch (card.sak) {
                case 0x00: 
                        // check if the tag answers to GETVERSION (0x60)
@@ -186,13 +179,13 @@ int CmdHF14AReader(const char *Cmd)
                
                        uint8_t version[8] = {0x00};
                        memcpy(&version, resp.d.asBytes, resp.arg[0]);
-                       uint8_t isOK  = resp.arg[0] & 0xff;
-                       if ( isOK ){                    
-                               // size of tag, check version[4] == 0x0b == smaller.
-                               PrintAndLog("TYPE : NXP MIFARE Ultralight EV1 %d bytes", (version[6] == 0xB) ? 48 : 128);
-                       }
-                       else {
-                               PrintAndLog("TYPE : NXP MIFARE Ultralight | Ultralight C");
+                       uint8_t len  = resp.arg[0] & 0xff;
+                       switch ( len){
+                               // todo, identify "Magic UL-C tags".  // they usually have a static nonce response to 0x1A command.
+                               // UL-EV1, size, check version[6] == 0x0b (smaller)  0x0b * 4 == 48
+                               case 0x0A:PrintAndLog("TYPE : NXP MIFARE Ultralight EV1 %d bytes", (version[6] == 0xB) ? 48 : 128);     break;                          
+                               case 0x01:PrintAndLog("TYPE : NXP MIFARE Ultralight C");break;
+                               case 0x00:PrintAndLog("TYPE : NXP MIFARE Ultralight");break;
                        }
                        
                        break;
@@ -212,6 +205,12 @@ int CmdHF14AReader(const char *Cmd)
                default: ;
        }
 
+       // Double & triple sized UID, can be mapped to a manufacturer.
+       // HACK: does this apply for Ultralight cards?
+       if ( card.uidlen > 4 ) {
+               PrintAndLog("MANUFACTURER : %s", getTagInfo(card.uid[0]));
+       }
+       
        // try to request ATS even if tag claims not to support it
        if (select_status == 2) {
                uint8_t rats[] = { 0xE0, 0x80 }; // FSDI=8 (FSD=256), CID=0