X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/8258f409697ab41a6858ef9bdcdf406989223bbb..22342f6dfe53055955e9a849ad0bedb8b3e7c83b:/armsrc/mifarecmd.c

diff --git a/armsrc/mifarecmd.c b/armsrc/mifarecmd.c
index 1f8f4ee8..884da913 100644
--- a/armsrc/mifarecmd.c
+++ b/armsrc/mifarecmd.c
@@ -16,7 +16,6 @@
 #include "mifarecmd.h"
 #include "apps.h"
 #include "util.h"
-
 #include "crc.h"
 
 // the block number for the ISO14443-4 PCB
@@ -24,7 +23,6 @@ uint8_t pcb_blocknum = 0;
 // Deselect card by sending a s-block. the crc is precalced for speed
 static  uint8_t deselect_cmd[] = {0xc2,0xe0,0xb4};
 
-
 //-----------------------------------------------------------------------------
 // Select, Authenticate, Read a MIFARE tag. 
 // read block
@@ -106,17 +104,17 @@ void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes){
 		return;
 	};
 	
-	if(mifare_ultra_auth(keybytes) == 1){
+	if(!mifare_ultra_auth(keybytes)){
 		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Authentication failed");
 		OnError(1);
 		return;
 	}
-	cmd_send(CMD_ACK,1,0,0,0,0);
 
 	if (turnOffField) {
 		FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 		LEDsoff();
 	}
+	cmd_send(CMD_ACK,1,0,0,0,0);
 }
 
 // Arg0 = BlockNo,
@@ -146,7 +144,7 @@ void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 		uint8_t key[16] = {0x00};
 		memcpy(key, datain, sizeof(key) );
 
-		if ( mifare_ultra_auth(key) == 1 ) {
+		if ( !mifare_ultra_auth(key) ) {
 			OnError(1);
 			return;
 		}
@@ -157,7 +155,7 @@ void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 		uint8_t pwd[4] = {0x00};
 		memcpy(pwd, datain, 4);
 		uint8_t pack[4] = {0,0,0,0};
-		if (mifare_ul_ev1_auth(pwd, pack) == 1) {
+		if (!mifare_ul_ev1_auth(pwd, pack)) {
 			OnError(1);
 			return;
 		}
@@ -248,19 +246,32 @@ void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 	LEDsoff();
 }
 
+// arg0 = blockNo (start)
+// arg1 = Pages (number of blocks)
+// arg2 = useKey
+// datain = KEY bytes
 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 {
+	// free eventually allocated BigBuf memory
+	BigBuf_free();
+	// clear trace
+	clear_trace();
+
 	// params
 	uint8_t blockNo = arg0;
 	uint16_t blocks = arg1;
 	bool useKey = (arg2 == 1); //UL_C
 	bool usePwd = (arg2 == 2); //UL_EV1/NTAG
-	int countblocks = 0;
-	uint8_t dataout[176] = {0x00};
+	uint32_t countblocks = 0;
+	uint8_t *dataout = BigBuf_malloc(CARD_MEMORY_SIZE);
+	if (dataout == NULL){
+		Dbprintf("out of memory");
+		OnError(1);
+		return;
+	}
 
 	LEDsoff();
 	LED_A_ON();
-	clear_trace();
 	iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 
 	int len = iso14443a_select_card(NULL, NULL, NULL);
@@ -275,7 +286,7 @@ void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 		uint8_t key[16] = {0x00};
 		memcpy(key, datain, sizeof(key) );
 
-		if ( mifare_ultra_auth(key) == 1 ) {
+		if ( !mifare_ultra_auth(key) ) {
 			OnError(1);
 			return;
 		}
@@ -287,19 +298,30 @@ void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 		memcpy(pwd, datain, sizeof(pwd));
 		uint8_t pack[4] = {0,0,0,0};
 
-		if (mifare_ul_ev1_auth(pwd, pack) == 1){
+		if (!mifare_ul_ev1_auth(pwd, pack)){
 			OnError(1);
 			return;			
 		}
 	}
 
 	for (int i = 0; i < blocks; i++){
-		len = mifare_ultra_readblock(blockNo * 4 + i, dataout + 4 * i);
+		if ((i*4) + 4 >= CARD_MEMORY_SIZE) {
+			Dbprintf("Data exceeds buffer!!");
+			break;
+		}
+	
+		len = mifare_ultra_readblock(blockNo + i, dataout + 4 * i);
 
 		if (len) {
 			if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Read block %d error",i);
-			OnError(2);
-			return;
+			// if no blocks read - error out
+			if (i==0){
+				OnError(2);
+				return;
+			} else {
+				//stop at last successful read block and return what we got
+				break;
+			}
 		} else {
 			countblocks++;
 		}
@@ -314,11 +336,12 @@ void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 
 	if (MF_DBGLEVEL >= MF_DBG_EXTENDED) Dbprintf("Blocks read %d", countblocks);
 
-	len = blocks * 4;
+	countblocks *= 4;
 
-	cmd_send(CMD_ACK, 1, len, 0, dataout, len);	
+	cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(), 0, 0);
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	LEDsoff();
+	BigBuf_free();
 }
 
 //-----------------------------------------------------------------------------
@@ -431,9 +454,17 @@ void MifareUWriteBlock(uint8_t arg0, uint8_t *datain)
 	LEDsoff();
 }
 
-void MifareUWriteBlock_Special(uint8_t arg0, uint8_t *datain)
+// Arg0   : Block to write to.
+// Arg1   : 0 = use no authentication.
+//          1 = use 0x1A authentication.
+//          2 = use 0x1B authentication.
+// datain : 4 first bytes is data to be written.
+//        : 4/16 next bytes is authentication key.
+void MifareUWriteBlock_Special(uint8_t arg0, uint8_t arg1, uint8_t *datain)
 {
 	uint8_t blockNo = arg0;
+	bool useKey = (arg1 == 1); //UL_C
+	bool usePwd = (arg1 == 2); //UL_EV1/NTAG
 	byte_t blockdata[4] = {0x00};
 
 	memcpy(blockdata, datain,4);
@@ -449,6 +480,28 @@ void MifareUWriteBlock_Special(uint8_t arg0, uint8_t *datain)
 		return;
 	};
 
+	// UL-C authentication
+	if ( useKey ) {
+		uint8_t key[16] = {0x00};
+		memcpy(key, datain+4, sizeof(key) );
+
+		if ( !mifare_ultra_auth(key) ) {
+			OnError(1);
+			return;
+		}
+	}
+	
+	// UL-EV1 / NTAG authentication
+	if (usePwd) {
+		uint8_t pwd[4] = {0x00};
+		memcpy(pwd, datain+4, 4);
+		uint8_t pack[4] = {0,0,0,0};
+		if (!mifare_ul_ev1_auth(pwd, pack)) {
+			OnError(1);
+			return;
+		}
+	}
+
 	if(mifare_ultra_special_writeblock(blockNo, blockdata)) {
 		if (MF_DBGLEVEL >= 1) Dbprintf("Write block error");
 		OnError(0);