X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/8258f409697ab41a6858ef9bdcdf406989223bbb..refs/pull/111/head:/armsrc/mifarecmd.c

diff --git a/armsrc/mifarecmd.c b/armsrc/mifarecmd.c
index 1f8f4ee8..8355cd19 100644
--- a/armsrc/mifarecmd.c
+++ b/armsrc/mifarecmd.c
@@ -106,17 +106,17 @@ 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 +146,7 @@ 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 +157,7 @@ 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;
 		}
@@ -250,17 +250,26 @@ void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain)
 
 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 +284,7 @@ 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 +296,30 @@ 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++;
 		}
@@ -314,9 +334,8 @@ 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;
-
-	cmd_send(CMD_ACK, 1, len, 0, dataout, len);	
+	countblocks *= 4;
+	cmd_send(CMD_ACK, 1, countblocks, BigBuf_max_traceLen(), 0, 0);
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 	LEDsoff();
 }