From 13b71e58fddf20c5d42b8f0af1d72c795139b86f Mon Sep 17 00:00:00 2001
From: douniwan5788 <douniwan5788@gmail.com>
Date: Thu, 21 Apr 2016 15:50:26 +0800
Subject: [PATCH] add support for a new kind Magic Chinese UID changable Mifare
 Classic card

---
 armsrc/mifarecmd.c  | 24 +++++++-----------------
 armsrc/mifareutil.c |  4 +++-
 2 files changed, 10 insertions(+), 18 deletions(-)

diff --git a/armsrc/mifarecmd.c b/armsrc/mifarecmd.c
index a3d6609d..36a6e8f5 100644
--- a/armsrc/mifarecmd.c
+++ b/armsrc/mifarecmd.c
@@ -1059,10 +1059,7 @@ void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datai
 				break;
 			};
 
-			if(mifare_classic_halt(NULL, cuid)) {
-				if (MF_DBGLEVEL >= 1)	Dbprintf("Halt error");
-				break;
-			};
+			mifare_classic_halt(NULL, cuid);
 		};
 	
 		// reset chip
@@ -1079,10 +1076,7 @@ void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datai
 				break;
 			};
 
-			if(mifare_classic_halt(NULL, cuid)) {
-				if (MF_DBGLEVEL >= 1)	Dbprintf("Halt error");
-				break;
-			};
+			mifare_classic_halt(NULL, cuid);
 		};	
 
 		// write block
@@ -1115,10 +1109,7 @@ void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datai
 		};	
 	
 		if (workFlags & 0x04) {
-			if (mifare_classic_halt(NULL, cuid)) {
-				if (MF_DBGLEVEL >= 1)	Dbprintf("Halt error");
-				break;
-			};
+			mifare_classic_halt(NULL, cuid);
 		}
 		
 		isOK = 1;
@@ -1192,10 +1183,7 @@ void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datai
 		memcpy(data, receivedAnswer, 18);
 		
 		if (workFlags & 0x04) {
-			if (mifare_classic_halt(NULL, cuid)) {
-				if (MF_DBGLEVEL >= 1)	Dbprintf("Halt error");
-				break;
-			};
+			mifare_classic_halt(NULL, cuid);
 		}
 		
 		isOK = 1;
@@ -1222,6 +1210,7 @@ void MifareCIdent(){
 	// card commands
 	uint8_t wupC1[]       = { 0x40 }; 
 	uint8_t wupC2[]       = { 0x43 }; 
+	uint8_t halt_ret	  = 0;
 	
 	// variables
 	byte_t isOK = 1;
@@ -1239,7 +1228,8 @@ void MifareCIdent(){
 		isOK = 0;
 	};
 
-	if (mifare_classic_halt(NULL, 0)) {
+	halt_ret = mifare_classic_halt(NULL, 0);
+	if (halt_ret && halt_ret != 4) {
 		isOK = 0;
 	};
 
diff --git a/armsrc/mifareutil.c b/armsrc/mifareutil.c
index 8ef364c2..fb54c025 100644
--- a/armsrc/mifareutil.c
+++ b/armsrc/mifareutil.c
@@ -511,7 +511,9 @@ int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
 	len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 	if (len != 0) {
 		if (MF_DBGLEVEL >= MF_DBG_ERROR)
-			Dbprintf("halt error. response len: %x", len);  
+			Dbprintf("halt error. response len: %x data:%02X %02X %02X %02X", len, receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3]);  
+		if (len == 1 && receivedAnswer[0]==0x04)
+			return 4;
 		return 1;
 	}
 
-- 
2.39.5