X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/0b91ce03e50fd7c4a5fd3d86f1dac984d4867118..refs/pull/347/head:/armsrc/iclass.c

diff --git a/armsrc/iclass.c b/armsrc/iclass.c
index eb5a5a79..f69d0be2 100644
--- a/armsrc/iclass.c
+++ b/armsrc/iclass.c
@@ -1661,7 +1661,7 @@ uint8_t handshakeIclassTag_ext(uint8_t *card_data, bool use_credit_key)
 	//Flag that we got to at least stage 1, read CSN
 	read_status = 1;
 
-	// Card selected, now read e-purse (cc)
+	// Card selected, now read e-purse (cc) (only 8 bytes no CRC)
 	ReaderTransmitIClass(readcheck_cc, sizeof(readcheck_cc));
 	if(ReaderReceiveIClass(resp) == 8) {
 		//Save CC (e-purse) in response data
@@ -1682,21 +1682,28 @@ void ReaderIClass(uint8_t arg0) {
 	uint8_t card_data[6 * 8]={0};
 	memset(card_data, 0xFF, sizeof(card_data));
 	uint8_t last_csn[8]={0};
-	
+	uint8_t resp[ICLASS_BUFFER_SIZE];
+	memset(resp, 0xFF, sizeof(resp));
 	//Read conf block CRC(0x01) => 0xfa 0x22
 	uint8_t readConf[] = { ICLASS_CMD_READ_OR_IDENTIFY,0x01, 0xfa, 0x22};
-	//Read conf block CRC(0x05) => 0xde  0x64
+	//Read App Issuer Area block CRC(0x05) => 0xde  0x64
 	uint8_t readAA[] = { ICLASS_CMD_READ_OR_IDENTIFY,0x05, 0xde, 0x64};
 
-
 	int read_status= 0;
 	uint8_t result_status = 0;
+	// flag to read until one tag is found successfully
 	bool abort_after_read = arg0 & FLAG_ICLASS_READER_ONLY_ONCE;
+	// flag to only try 5 times to find one tag then return
 	bool try_once = arg0 & FLAG_ICLASS_READER_ONE_TRY;
-	bool use_credit_key = false;
-	if (arg0 & FLAG_ICLASS_READER_CEDITKEY)
-		use_credit_key = true;
-	set_tracing(TRUE);
+	// if neither abort_after_read nor try_once then continue reading until button pressed.
+
+	bool use_credit_key = arg0 & FLAG_ICLASS_READER_CEDITKEY;
+	// test flags for what blocks to be sure to read
+	uint8_t flagReadConfig = arg0 & FLAG_ICLASS_READER_CONF;
+	uint8_t flagReadCC = arg0 & FLAG_ICLASS_READER_CC;
+	uint8_t flagReadAA = arg0 & FLAG_ICLASS_READER_AA;
+
+	set_tracing(true);
 	setupIclassReader();
 
 	uint16_t tryCnt=0;
@@ -1721,21 +1728,22 @@ void ReaderIClass(uint8_t arg0) {
 		// moving CC forward 8 bytes
 		memcpy(card_data+16,card_data+8, 8);
 		//Read block 1, config
-		if(arg0 & FLAG_ICLASS_READER_CONF)
-		{
-			if(sendCmdGetResponseWithRetries(readConf, sizeof(readConf),card_data+8, 10, 10))
+		if(flagReadConfig) {
+			if(sendCmdGetResponseWithRetries(readConf, sizeof(readConf), resp, 10, 10))
 			{
 				result_status |= FLAG_ICLASS_READER_CONF;
+				memcpy(card_data+8, resp, 8);
 			} else {
 				Dbprintf("Failed to dump config block");
 			}
 		}
 
 		//Read block 5, AA
-		if(arg0 & FLAG_ICLASS_READER_AA){
-			if(sendCmdGetResponseWithRetries(readAA, sizeof(readAA),card_data+(8*4), 10, 10))
+		if(flagReadAA) {
+			if(sendCmdGetResponseWithRetries(readAA, sizeof(readAA), resp, 10, 10))
 			{
 				result_status |= FLAG_ICLASS_READER_AA;
+				memcpy(card_data+(8*5), resp, 8);
 			} else {
 				//Dbprintf("Failed to dump AA block");
 			}
@@ -1747,16 +1755,15 @@ void ReaderIClass(uint8_t arg0) {
 		// (3,4 write-only, kc and kd)
 		// 5 Application issuer area
 		//
-		//Then we can 'ship' back the 8 * 5 bytes of data,
+		//Then we can 'ship' back the 8 * 6 bytes of data,
 		// with 0xFF:s in block 3 and 4.
 
 		LED_B_ON();
 		//Send back to client, but don't bother if we already sent this
 		if(memcmp(last_csn, card_data, 8) != 0)
 		{
-			// If caller requires that we get CC, continue until we got it
-			if( (arg0 & read_status & FLAG_ICLASS_READER_CC) || !(arg0 & FLAG_ICLASS_READER_CC))
-			{
+			// If caller requires that we get Conf, CC, AA, continue until we got it
+			if( (result_status ^ FLAG_ICLASS_READER_CSN ^ flagReadConfig ^ flagReadCC ^ flagReadAA) == 0) {
 				cmd_send(CMD_ACK,result_status,0,0,card_data,sizeof(card_data));
 				if(abort_after_read) {
 					LED_A_OFF();