X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/fd1d30cb76a384adc8176df1f0f35658c091d96c..refs/pull/181/head:/client/cmddata.c?ds=inline

diff --git a/client/cmddata.c b/client/cmddata.c
index fd08b6dd..394dcbc2 100644
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -23,10 +23,12 @@
 #include "lfdemod.h"
 #include "usb_cmd.h"
 #include "crc.h"
+#include "crc16.h"
+#include "loclass/cipherutils.h"
 
 uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
-uint8_t g_debugMode;
-size_t DemodBufferLen;
+uint8_t g_debugMode=0;
+size_t DemodBufferLen=0;
 static int CmdHelp(const char *Cmd);
 
 //set the demod buffer with given array of binary (one bit per byte)
@@ -40,7 +42,7 @@ void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
 		size = MAX_DEMOD_BUF_LEN;
 
 	size_t i = 0;
-for (; i < size; i++){
+	for (; i < size; i++){
 		DemodBuffer[i]=buff[startIdx++];
 	}
 	DemodBufferLen=size;
@@ -56,11 +58,12 @@ int CmdSetDebugMode(const char *Cmd)
 }
 
 int usage_data_printdemodbuf(){
-		PrintAndLog("Usage: data printdemodbuffer x o <offset>");
+		PrintAndLog("Usage: data printdemodbuffer x o <offset> l <length>");
 		PrintAndLog("Options:        ");
 		PrintAndLog("       h          This help");
 		PrintAndLog("       x          output in hex (omit for binary output)");
 		PrintAndLog("       o <offset> enter offset in # of bits");
+		PrintAndLog("       l <length> enter length to print in # of bits or hex characters respectively");
 		return 0;	
 }
 
@@ -85,7 +88,8 @@ int CmdPrintDemodBuff(const char *Cmd)
 	char hex[512]={0x00};
 	bool hexMode = false;
 	bool errors = false;
-	uint8_t offset = 0;
+	uint32_t offset = 0; //could be size_t but no param_get16...
+	uint32_t length = 512;
 	char cmdp = 0;
 	while(param_getchar(Cmd, cmdp) != 0x00)
 	{
@@ -101,10 +105,16 @@ int CmdPrintDemodBuff(const char *Cmd)
 			break;
 		case 'o':
 		case 'O':
-			offset = param_get8(Cmd, cmdp+1);
+			offset = param_get32ex(Cmd, cmdp+1, 0, 10);
 			if (!offset) errors = true;
 			cmdp += 2;
 			break;
+		case 'l':
+		case 'L':
+			length = param_get32ex(Cmd, cmdp+1, 512, 10);
+			if (!length) errors = true;
+			cmdp += 2;
+			break;
 		default:
 			PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 			errors = true;
@@ -114,18 +124,17 @@ int CmdPrintDemodBuff(const char *Cmd)
 	}
 	//Validations
 	if(errors) return usage_data_printdemodbuf();
-
-	int numBits = (DemodBufferLen-offset) & 0x7FC; //make sure we don't exceed our string
+	length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length; 
+	int numBits = (length) & 0x00FFC; //make sure we don't exceed our string
 
 	if (hexMode){
 		char *buf = (char *) (DemodBuffer + offset);
+		numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits;
 		numBits = binarraytohex(hex, buf, numBits);
 		if (numBits==0) return 0;
 		PrintAndLog("DemodBuffer: %s",hex);		
 	} else {
-		//setDemodBuf(DemodBuffer, DemodBufferLen-offset, offset);
-		char *bin = sprint_bin_break(DemodBuffer+offset,numBits,16);
-		PrintAndLog("DemodBuffer:\n%s",bin);
+		PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16));
 	}
 	return 1;
 }
@@ -268,7 +277,8 @@ int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
 
 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
 {
-	if (!ASKDemod(Cmd, FALSE, FALSE, 1)) return 0;
+	bool st = TRUE;
+	if (!ASKDemod_ext(Cmd, FALSE, FALSE, 1, &st)) return 0;
 	return AskEm410xDecode(verbose, hi, lo);
 }
 
@@ -303,8 +313,7 @@ int CmdAskEM410xDemod(const char *Cmd)
 //verbose will print results and demoding messages
 //emSearch will auto search for EM410x format in bitstream
 //askType switches decode: ask/raw = 0, ask/manchester = 1 
-int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
-{
+int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, bool *stCheck) {
 	int invert=0;
 	int clk=0;
 	int maxErr=100;
@@ -313,7 +322,7 @@ int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
 	char amp = param_getchar(Cmd, 0);
 	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
 	sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
-	if (!maxLen) maxLen = 512*64;
+	if (!maxLen) maxLen = BIGBUF_SIZE;
 	if (invert != 0 && invert != 1) {
 		PrintAndLog("Invalid argument: %s", Cmd);
 		return 0;
@@ -325,15 +334,22 @@ int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
 	if (amp == 'a' || amp == 'A') askAmp=1; 
 	size_t BitLen = getFromGraphBuf(BitStream);
 	if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
-	if (BitLen<255) return 0;
-	if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
-
+	if (BitLen < 255) return 0;
+	if (maxLen < BitLen && maxLen != 0) BitLen = maxLen;
+	int foundclk = 0;
+	bool st = false;
+	if (*stCheck) st = DetectST(BitStream, &BitLen, &foundclk);
+	if (st) {
+		*stCheck = st;
+		clk = (clk == 0) ? foundclk : clk;
+		if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator");
+	}
 	int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
 	if (errCnt<0 || BitLen<16){  //if fatal error (or -1)
 		if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
 		return 0;
 	}
-	if (errCnt>maxErr){
+	if (errCnt > maxErr){
 		if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
 		return 0;
 	}
@@ -343,8 +359,8 @@ int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
 	setDemodBuf(BitStream,BitLen,0);
 	if (verbose || g_debugMode){
 		if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
-		if (askType) PrintAndLog("ASK/Manchester decoded bitstream:");
-		else PrintAndLog("ASK/Raw decoded bitstream:");
+		if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
+		else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
 		// Now output the bitstream to the scrollback by line of 16 bits
 		printDemodBuff();
 		
@@ -356,6 +372,10 @@ int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType)
 	}
 	return 1;
 }
+int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) {
+	bool st = false;
+	return ASKDemod_ext(Cmd, verbose, emSearch, askType, &st);
+}
 
 //by marshmellow
 //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
@@ -365,7 +385,8 @@ int Cmdaskmandemod(const char *Cmd)
 {
 	char cmdp = param_getchar(Cmd, 0);
 	if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H') {
-		PrintAndLog("Usage:  data rawdemod am [clock] <invert> [maxError] [maxLen] [amplify]");
+		PrintAndLog("Usage:  data rawdemod am <s> [clock] <invert> [maxError] [maxLen] [amplify]");
+		PrintAndLog("     ['s'] optional, check for Sequence Terminator");
 		PrintAndLog("     [set clock as integer] optional, if not set, autodetect");
 		PrintAndLog("     <invert>, 1 to invert output");
 		PrintAndLog("     [set maximum allowed errors], default = 100");
@@ -379,7 +400,13 @@ int Cmdaskmandemod(const char *Cmd)
 		PrintAndLog("          : data rawdemod am 64 1 0 = demod an ask/manchester tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
 		return 0;
 	}
-	return ASKDemod(Cmd, TRUE, TRUE, 1);
+	bool st = TRUE;
+	if (Cmd[0]=='s') 
+		return ASKDemod_ext(Cmd++, TRUE, TRUE, 1, &st);
+	else if (Cmd[1] == 's')
+		return ASKDemod_ext(Cmd+=2, TRUE, TRUE, 1, &st);
+	else
+		return ASKDemod(Cmd, TRUE, TRUE, 1);
 }
 
 //by marshmellow
@@ -391,7 +418,7 @@ int Cmdmandecoderaw(const char *Cmd)
 	int errCnt=0;
 	size_t size=0;
 	int invert=0;
-	size_t maxErr = 20;
+	int maxErr = 20;
 	char cmdp = param_getchar(Cmd, 0);
 	if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H') {
 		PrintAndLog("Usage:  data manrawdecode [invert] [maxErr]");
@@ -497,22 +524,20 @@ int CmdBiphaseDecodeRaw(const char *Cmd)
 int ASKbiphaseDemod(const char *Cmd, bool verbose)
 {
 	//ask raw demod GraphBuffer first
-	int offset=0, clk=0, invert=0, maxErr=0, ans=0;
-	ans = sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
-	if (ans>0)
-		ans = ASKDemod(Cmd+2, FALSE, FALSE, 0);
-	else
-		ans = ASKDemod(Cmd, FALSE, FALSE, 0);
-	if (!ans) {
-		if (g_debugMode || verbose) PrintAndLog("Error AskDemod: %d", ans);
-		return 0;
-	}
+	int offset=0, clk=0, invert=0, maxErr=0;
+	sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
+
+	uint8_t BitStream[MAX_DEMOD_BUF_LEN];	  
+	size_t size = getFromGraphBuf(BitStream);	  
+	//invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
+	int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);  
+	if ( errCnt < 0 || errCnt > maxErr ) {   
+		if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);  
+			return 0;  
+	} 
 
-	//attempt to Biphase decode DemodBuffer
-	size_t size = DemodBufferLen;
-	uint8_t BitStream[MAX_DEMOD_BUF_LEN];
-	memcpy(BitStream, DemodBuffer, DemodBufferLen); 
-	int errCnt = BiphaseRawDecode(BitStream, &size, offset, 0);
+	//attempt to Biphase decode BitStream
+	errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
 	if (errCnt < 0){
 		if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
 		return 0;
@@ -524,7 +549,7 @@ int ASKbiphaseDemod(const char *Cmd, bool verbose)
 	//success set DemodBuffer and return
 	setDemodBuf(BitStream, size, 0);
 	if (g_debugMode || verbose){
-		PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt);
+		PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
 		printDemodBuff();
 	}
 	return 1;
@@ -588,7 +613,7 @@ int CmdG_Prox_II_Demod(const char *Cmd)
 		if ((idx+1) % 5 == 0){
 			//spacer bit - should be 0
 			if (DemodBuffer[startIdx+idx] != 0) {
-				if (g_debugMode) PrintAndLog("Error spacer not 0: %d, pos: %d",DemodBuffer[startIdx+idx],startIdx+idx);
+				if (g_debugMode) PrintAndLog("Error spacer not 0: %u, pos: %u", (unsigned int)DemodBuffer[startIdx+idx],(unsigned int)(startIdx+idx));
 				return 0;
 			}
 			continue;
@@ -596,21 +621,21 @@ int CmdG_Prox_II_Demod(const char *Cmd)
 		if (keyCnt<8){ //lsb first
 			xorKey = xorKey | (DemodBuffer[startIdx+idx]<<keyCnt);
 			keyCnt++;
-			if (keyCnt==8 && g_debugMode) PrintAndLog("xorKey Found: %02x", xorKey);
+			if (keyCnt==8 && g_debugMode) PrintAndLog("xorKey Found: %02x", (unsigned int)xorKey);
 			continue;
 		}
 		//lsb first
 		ByteStream[ByteCnt] = ByteStream[ByteCnt] | (DemodBuffer[startIdx+idx]<<bitCnt);
 		bitCnt++;
 		if (bitCnt % 8 == 0){
-			if (g_debugMode) PrintAndLog("byte %d: %02x",ByteCnt,ByteStream[ByteCnt]);
+			if (g_debugMode) PrintAndLog("byte %u: %02x", (unsigned int)ByteCnt, ByteStream[ByteCnt]);
 			bitCnt=0;
 			ByteCnt++;
 		}
 	}
 	for (uint8_t i = 0; i < ByteCnt; i++){
 		ByteStream[i] ^= xorKey; //xor
-		if (g_debugMode) PrintAndLog("byte %d after xor: %02x", i, ByteStream[i]);
+		if (g_debugMode) PrintAndLog("byte %u after xor: %02x", (unsigned int)i, ByteStream[i]);
 	}
 	//now ByteStream contains 64 bytes of decrypted raw tag data
 	// 
@@ -624,19 +649,45 @@ int CmdG_Prox_II_Demod(const char *Cmd)
 	if (fmtLen==36){
 		FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
 		Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
-		PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);
+		PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d", fmtLen, FC, Card);
 	} else if(fmtLen==26){
 		FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
 		Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
-		PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",fmtLen,FC,Card);    
+		PrintAndLog("G-Prox-II Found: FmtLen %d, FC %d, Card %d",(unsigned int)fmtLen,FC,Card);
 	} else {
-		PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",fmtLen);
+		PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",(int)fmtLen);
 	}
 	PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
 	setDemodBuf(DemodBuffer+ans, 96, 0);
 	return 1;
 }
 
+//by marshmellow
+//see ASKDemod for what args are accepted
+int CmdVikingDemod(const char *Cmd)
+{
+	if (!ASKDemod(Cmd, false, false, 1)) {
+		if (g_debugMode) PrintAndLog("ASKDemod failed");
+		return 0;
+	}
+	size_t size = DemodBufferLen;
+	//call lfdemod.c demod for Viking
+	int ans = VikingDemod_AM(DemodBuffer, &size);
+	if (ans < 0) {
+		if (g_debugMode) PrintAndLog("Error Viking_Demod %d", ans);
+		return 0;
+	}
+	//got a good demod
+	uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
+	uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
+	uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32);
+	uint8_t  checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8);
+	PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, (unsigned int) checksum);
+	PrintAndLog("Raw: %08X%08X", raw1,raw2);
+	setDemodBuf(DemodBuffer+ans, 64, 0);
+	return 1;
+}
+
 //by marshmellow - see ASKDemod
 int Cmdaskrawdemod(const char *Cmd)
 {
@@ -886,19 +937,21 @@ int CmdDetectClockRate(const char *Cmd)
 
 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
 {
-	char *fskType;
+	static char fType[8];
+	memset(fType, 0x00, 8);
+	char *fskType = fType;
 	if (fchigh==10 && fclow==8){
 		if (invert) //fsk2a
-			fskType = "FSK2a";
+			memcpy(fskType, "FSK2a", 5);
 		else //fsk2
-			fskType = "FSK2";
+			memcpy(fskType, "FSK2", 4);
 	} else if (fchigh == 8 && fclow == 5) {
 		if (invert)
-			fskType = "FSK1";
+			memcpy(fskType, "FSK1", 4);
 		else
-			fskType = "FSK1a";
+			memcpy(fskType, "FSK1a", 5);
 	} else {
-		fskType = "FSK??";
+		memcpy(fskType, "FSK??", 5);
 	}
 	return fskType;
 }
@@ -910,55 +963,53 @@ char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
 int FSKrawDemod(const char *Cmd, bool verbose)
 {
 	//raw fsk demod  no manchester decoding no start bit finding just get binary from wave
+	uint8_t rfLen, invert, fchigh, fclow;
 	//set defaults
-	int rfLen = 0;
-	int invert = 0;
-	int fchigh = 0;
-	int fclow = 0;
-
 	//set options from parameters entered with the command
-	sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
+	rfLen = param_get8(Cmd, 0);
+	invert = param_get8(Cmd, 1);
+	fchigh = param_get8(Cmd, 2);
+	fclow = param_get8(Cmd, 3);
 
 	if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
-		 if (rfLen==1){
+		if (rfLen==1) {
 			invert = 1;   //if invert option only is used
 			rfLen = 0;
-		 }
+		}
 	}
-
 	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
 	size_t BitLen = getFromGraphBuf(BitStream);
 	if (BitLen==0) return 0;
 	//get field clock lengths
 	uint16_t fcs=0;
-	if (fchigh==0 || fclow == 0){
+	if (!fchigh || !fclow) {
 		fcs = countFC(BitStream, BitLen, 1);
-		if (fcs==0){
-			fchigh=10;
-			fclow=8;
-		}else{
-			fchigh = (fcs >> 8) & 0xFF;
-			fclow = fcs & 0xFF;
+		if (!fcs) {
+			fchigh = 10;
+			fclow = 8;
+		} else {
+			fchigh = (fcs >> 8) & 0x00FF;
+			fclow = fcs & 0x00FF;
 		}
 	}
 	//get bit clock length
-	if (rfLen==0){
+	if (!rfLen) {
 		rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
-		if (rfLen == 0) rfLen = 50;
+		if (!rfLen) rfLen = 50;
 	}
-	int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
-	if (size>0){
+	int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
+	if (size > 0) {
 		setDemodBuf(BitStream,size,0);
 
 		// Now output the bitstream to the scrollback by line of 16 bits
 		if (verbose || g_debugMode) {
-			PrintAndLog("\nUsing Clock:%d, invert:%d, fchigh:%d, fclow:%d", rfLen, invert, fchigh, fclow);
+			PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen, (unsigned int)invert, (unsigned int)fchigh, (unsigned int)fclow);
 			PrintAndLog("%s decoded bitstream:",GetFSKType(fchigh,fclow,invert));
 			printDemodBuff();
 		}
 
 		return 1;
-	} else{
+	} else {
 		if (g_debugMode) PrintAndLog("no FSK data found");
 	}
 	return 0;
@@ -1130,8 +1181,6 @@ int CmdFSKdemodParadox(const char *Cmd)
 //print ioprox ID and some format details
 int CmdFSKdemodIO(const char *Cmd)
 {
-	//raw fsk demod no manchester decoding no start bit finding just get binary from wave
-	//set defaults
 	int idx=0;
 	//something in graphbuffer?
 	if (GraphTraceLen < 65) {
@@ -1220,11 +1269,6 @@ int CmdFSKdemodIO(const char *Cmd)
 //print full AWID Prox ID and some bit format details if found
 int CmdFSKdemodAWID(const char *Cmd)
 {
-
-	//int verbose=1;
-	//sscanf(Cmd, "%i", &verbose);
-
-	//raw fsk demod no manchester decoding no start bit finding just get binary from wave
 	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
 	size_t size = getFromGraphBuf(BitStream);
 	if (size==0) return 0;
@@ -1423,7 +1467,6 @@ int CmdFSKdemodPyramid(const char *Cmd)
 	uint32_t fc = 0;
 	uint32_t cardnum = 0;
 	uint32_t code1 = 0;
-	//uint32_t code2 = 0;
 	if (fmtLen==26){
 		fc = bytebits_to_byte(BitStream+73, 8);
 		cardnum = bytebits_to_byte(BitStream+81, 16);
@@ -1457,13 +1500,24 @@ int CmdFSKdemodPyramid(const char *Cmd)
 	return 1;
 }
 
-// ISO11784/85 demod  (aka animal tag)  BIPHASE, inverted, rf/32,  with preamble of 00000000001 (128bits)
+// FDX-B ISO11784/85 demod  (aka animal tag)  BIPHASE, inverted, rf/32,  with preamble of 00000000001 (128bits)
 // 8 databits + 1 parity (1)
 // CIITT 16 chksum
 // NATIONAL CODE, ICAR database
-// COUNTRY CODE (ISO3166) 
+// COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
 // FLAG (animal/non-animal)
-int CmdIso11784demodBI(const char *Cmd){
+/*
+38 IDbits   
+10 country code 
+1 extra app bit
+14 reserved bits
+1 animal bit
+16 ccitt CRC chksum over 64bit ID CODE.
+24 appli bits.
+
+-- sample: 985121004515220  [ 37FF65B88EF94 ]
+*/
+int CmdFDXBdemodBI(const char *Cmd){
 
 	int invert = 1;
 	int clk = 32;		
@@ -1474,7 +1528,7 @@ int CmdIso11784demodBI(const char *Cmd){
 	
 	errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
 	if ( errCnt < 0 || errCnt > maxErr ) { 
-		if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: 32", errCnt);
+		if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
 		return 0;
 	}
 
@@ -1484,29 +1538,33 @@ int CmdIso11784demodBI(const char *Cmd){
 		return 0;
 	} 
 
-	int preambleIndex = ISO11784demodBI(BitStream, &size);
+	int preambleIndex = FDXBdemodBI(BitStream, &size);
 	if (preambleIndex < 0){
-		if (g_debugMode) PrintAndLog("Error ISO11784Demod , no startmarker found :: %d",preambleIndex);
+		if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
+		return 0;
+	}
+	if (size != 128) {
+		if (g_debugMode) PrintAndLog("Error incorrect data length found");
 		return 0;
 	}
 
 	setDemodBuf(BitStream, 128, preambleIndex);
-	//printDemodBuff();
 
+	// remove marker bits (1's every 9th digit after preamble) (pType = 2)
 	size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
-	if ( size <= 103 ) {
+	if ( size != 104 ) {
 		if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
 		return 0;
 	}
-	//char *bin = sprint_bin_break(BitStream,size,16);
-	//PrintAndLog("DEBUG BinStream:\n%s",bin);
-
-	PrintAndLog("startmarker %d;   Size %d", preambleIndex, size);
+	if (g_debugMode) {
+		char *bin = sprint_bin_break(BitStream,size,16);
+		PrintAndLog("DEBUG BinStream:\n%s",bin);
+	}
+	PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
+	if (g_debugMode) PrintAndLog("Start marker %d;   Size %d", preambleIndex, size);
 
-	//return 1;
 	//got a good demod
-	uint32_t NationalCodeA = bytebits_to_byteLSBF(BitStream,32);
-	uint32_t NationalCodeB = bytebits_to_byteLSBF(BitStream+32,6);
+	uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
 	uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
 	uint8_t dataBlockBit = BitStream[48];
 	uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
@@ -1514,13 +1572,21 @@ int CmdIso11784demodBI(const char *Cmd){
 	uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
 	uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
 
-	PrintAndLog("NationalCode: %X%08X",NationalCodeB,NationalCodeA);
-	PrintAndLog("CountryCode:  %d",countryCode);
-	PrintAndLog("dataBlockBit: %d",dataBlockBit);
-	PrintAndLog("reservedCode: %X",reservedCode);
-	PrintAndLog("animalBit:    %d", animalBit);
-	PrintAndLog("CRC:          %02X", crc16);
-	PrintAndLog("Extended:     %x", extended);
+	uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
+	uint8_t raw[8];
+	num_to_bytes(rawid, 8, raw);
+
+	if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
+
+	uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
+	PrintAndLog("Animal ID:     %04u-%012llu", countryCode, NationalCode);
+	PrintAndLog("National Code: %012llu", NationalCode);
+	PrintAndLog("CountryCode:   %04u", countryCode);
+	PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
+	PrintAndLog("reserved Code: %u", reservedCode);
+	PrintAndLog("Animal Tag:    %s", animalBit ? "True" : "False");
+	PrintAndLog("CRC:           0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
+	PrintAndLog("Extended:      0x%X\n", extended);
 	
 	return 1;
 }
@@ -1539,17 +1605,20 @@ int PSKDemod(const char *Cmd, bool verbose)
 		clk=0;
 	}
 	if (invert != 0 && invert != 1) {
-		if (verbose) PrintAndLog("Invalid argument: %s", Cmd);
+		if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
 		return 0;
 	}
 	uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
 	size_t BitLen = getFromGraphBuf(BitStream);
-	if (BitLen==0) return -1;
+	if (BitLen==0) return 0;
 	uint8_t carrier=countFC(BitStream, BitLen, 0);
 	if (carrier!=2 && carrier!=4 && carrier!=8){
 		//invalid carrier
 		return 0;
 	}
+	if (g_debugMode){
+		PrintAndLog("Carrier: rf/%d",carrier);
+	}
 	int errCnt=0;
 	errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
 	if (errCnt > maxErr){
@@ -1589,61 +1658,33 @@ int CmdIndalaDecode(const char *Cmd)
 		return 0;
 	}
 	uint8_t invert=0;
-	ans = indala26decode(DemodBuffer, &DemodBufferLen, &invert);
-	if (ans < 1) {
+	size_t size = DemodBufferLen;
+	size_t startIdx = indala26decode(DemodBuffer, &size, &invert);
+	if (startIdx < 1 || size > 224) {
 		if (g_debugMode==1)
 			PrintAndLog("Error2: %d",ans);
 		return -1;
 	}
-	char showbits[251]={0x00};
+	setDemodBuf(DemodBuffer, size, startIdx);
 	if (invert)
 		if (g_debugMode==1)
 			PrintAndLog("Had to invert bits");
 
+	PrintAndLog("BitLen: %d",DemodBufferLen);
 	//convert UID to HEX
 	uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
-	int idx;
-	uid1=0;
-	uid2=0;
-	PrintAndLog("BitLen: %d",DemodBufferLen);
-	if (DemodBufferLen==64){
-		for( idx=0; idx<64; idx++) {
-			uid1=(uid1<<1)|(uid2>>31);
-			if (DemodBuffer[idx] == 0) {
-				uid2=(uid2<<1)|0;
-				showbits[idx]='0';
-			} else {
-				uid2=(uid2<<1)|1;
-				showbits[idx]='1';
-			}
-		}
-		showbits[idx]='\0';
-		PrintAndLog("Indala UID=%s (%x%08x)", showbits, uid1, uid2);
-	}
-	else {
-		uid3=0;
-		uid4=0;
-		uid5=0;
-		uid6=0;
-		uid7=0;
-		for( idx=0; idx<DemodBufferLen; idx++) {
-			uid1=(uid1<<1)|(uid2>>31);
-			uid2=(uid2<<1)|(uid3>>31);
-			uid3=(uid3<<1)|(uid4>>31);
-			uid4=(uid4<<1)|(uid5>>31);
-			uid5=(uid5<<1)|(uid6>>31);
-			uid6=(uid6<<1)|(uid7>>31);
-			if (DemodBuffer[idx] == 0) {
-				uid7=(uid7<<1)|0;
-				showbits[idx]='0';
-			}
-			else {
-				uid7=(uid7<<1)|1;
-				showbits[idx]='1';
-			}
-		}
-		showbits[idx]='\0';
-		PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
+	uid1=bytebits_to_byte(DemodBuffer,32);
+	uid2=bytebits_to_byte(DemodBuffer+32,32);
+	if (DemodBufferLen==64) {
+		PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2);
+	} else {
+		uid3=bytebits_to_byte(DemodBuffer+64,32);
+		uid4=bytebits_to_byte(DemodBuffer+96,32);
+		uid5=bytebits_to_byte(DemodBuffer+128,32);
+		uid6=bytebits_to_byte(DemodBuffer+160,32);
+		uid7=bytebits_to_byte(DemodBuffer+192,32);
+		PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)", 
+		    sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
 	}
 	if (g_debugMode){
 		PrintAndLog("DEBUG: printing demodbuffer:");
@@ -1713,7 +1754,7 @@ int NRZrawDemod(const char *Cmd, bool verbose)
 	size_t BitLen = getFromGraphBuf(BitStream);
 	if (BitLen==0) return 0;
 	int errCnt=0;
-	errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert, maxErr);
+	errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert);
 	if (errCnt > maxErr){
 		if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
 		return 0;
@@ -1936,26 +1977,14 @@ int CmdHpf(const char *Cmd)
 	RepaintGraphWindow();
 	return 0;
 }
-typedef struct {
-	uint8_t * buffer;
-	uint32_t numbits;
-	uint32_t position;
-}BitstreamOut;
 
-bool _headBit( BitstreamOut *stream)
-{
-	int bytepos = stream->position >> 3; // divide by 8
-	int bitpos = (stream->position++) & 7; // mask out 00000111
-	return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
-}
-
-uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
+uint8_t getByte(uint8_t bits_per_sample, BitstreamIn* b)
 {
 	int i;
 	uint8_t val = 0;
 	for(i =0 ; i < bits_per_sample; i++)
 	{
-		val |= (_headBit(b) << (7-i));
+		val |= (headBit(b) << (7-i));
 	}
 	return val;
 }
@@ -1971,10 +2000,7 @@ int getSamples(const char *Cmd, bool silent)
 
 	int n = strtol(Cmd, NULL, 0);
 
-	if (n == 0)
-		n = sizeof(got);
-
-	if (n > sizeof(got))
+	if (n == 0 || n > sizeof(got))
 		n = sizeof(got);
 
 	PrintAndLog("Reading %d bytes from device memory\n", n);
@@ -1995,7 +2021,7 @@ int getSamples(const char *Cmd, bool silent)
 	if(bits_per_sample < 8)
 	{
 		PrintAndLog("Unpacking...");
-		BitstreamOut bout = { got, bits_per_sample * n,  0};
+		BitstreamIn bout = { got, bits_per_sample * n,  0};
 		int j =0;
 		for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
 			uint8_t sample = getByte(bits_per_sample, &bout);
@@ -2022,10 +2048,20 @@ int CmdSamples(const char *Cmd)
 
 int CmdTuneSamples(const char *Cmd)
 {
-	int timeout = 0;
+	int timeout = 0, arg = FLAG_TUNE_ALL;
+
+	if(*Cmd == 'l') {
+	  arg = FLAG_TUNE_LF;
+	} else if (*Cmd == 'h') {
+	  arg = FLAG_TUNE_HF;
+	} else if (*Cmd != '\0') {
+	  PrintAndLog("use 'tune' or 'tune l' or 'tune h'");
+	  return 0;
+	}
+
 	printf("\nMeasuring antenna characteristics, please wait...");
 
-	UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
+	UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING, {arg, 0, 0}};
 	SendCommand(&c);
 
 	UsbCommand resp;
@@ -2258,18 +2294,114 @@ int CmdZerocrossings(const char *Cmd)
 	return 0;
 }
 
+int usage_data_bin2hex(){
+		PrintAndLog("Usage: data bin2hex <binary_digits>");
+		PrintAndLog("       This function will ignore all characters not 1 or 0 (but stop reading on whitespace)");
+		return 0;
+}
+
+/**
+ * @brief Utility for conversion via cmdline.
+ * @param Cmd
+ * @return
+ */
+int Cmdbin2hex(const char *Cmd)
+{
+	int bg =0, en =0;
+	if(param_getptr(Cmd, &bg, &en, 0))
+	{
+		return usage_data_bin2hex();
+	}
+	//Number of digits supplied as argument
+	size_t length = en  - bg +1;
+	size_t bytelen = (length+7) / 8;
+	uint8_t* arr = (uint8_t *) malloc(bytelen);
+	memset(arr, 0, bytelen);
+	BitstreamOut bout = { arr, 0, 0 };
+
+	for(; bg <= en ;bg++)
+	{
+		char c = Cmd[bg];
+		if( c == '1')	pushBit(&bout, 1);
+		else if( c == '0')	pushBit(&bout, 0);
+		else PrintAndLog("Ignoring '%c'", c);
+	}
+
+	if(bout.numbits % 8 != 0)
+	{
+		printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
+	}
+
+	//Uses printf instead of PrintAndLog since the latter
+	// adds linebreaks to each printout - this way was more convenient since we don't have to
+	// allocate a string and write to that first...
+	for(size_t x = 0; x  < bytelen ; x++)
+	{
+		printf("%02X", arr[x]);
+	}
+	printf("\n");
+	free(arr);
+	return 0;
+}
+
+int usage_data_hex2bin(){
+
+	PrintAndLog("Usage: data bin2hex <binary_digits>");
+	PrintAndLog("       This function will ignore all non-hexadecimal characters (but stop reading on whitespace)");
+	return 0;
+
+}
+
+int Cmdhex2bin(const char *Cmd)
+{
+	int bg =0, en =0;
+	if(param_getptr(Cmd, &bg, &en, 0))
+	{
+		return usage_data_hex2bin();
+	}
+
+
+	while(bg <= en )
+	{
+		char x = Cmd[bg++];
+		// capitalize
+		if (x >= 'a' && x <= 'f')
+			x -= 32;
+		// convert to numeric value
+		if (x >= '0' && x <= '9')
+			x -= '0';
+		else if (x >= 'A' && x <= 'F')
+			x -= 'A' - 10;
+		else
+			continue;
+
+		//Uses printf instead of PrintAndLog since the latter
+		// adds linebreaks to each printout - this way was more convenient since we don't have to
+		// allocate a string and write to that first...
+
+		for(int i= 0 ; i < 4 ; ++i)
+			printf("%d",(x >> (3 - i)) & 1);
+	}
+	printf("\n");
+
+	return 0;
+}
+
 static command_t CommandTable[] =
 {
 	{"help",            CmdHelp,            1, "This help"},
 	{"askedgedetect",   CmdAskEdgeDetect,   1, "[threshold] Adjust Graph for manual ask demod using the length of sample differences to detect the edge of a wave (use 20-45, def:25)"},
 	{"askem410xdemod",  CmdAskEM410xDemod,  1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
 	{"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
+	{"askvikingdemod",  CmdVikingDemod,     1, "Demodulate a Viking tag from GraphBuffer"},
 	{"autocorr",        CmdAutoCorr,        1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
 	{"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
+	{"bin2hex",         Cmdbin2hex,         1, "bin2hex <digits>     -- Converts binary to hexadecimal"},
 	{"bitsamples",      CmdBitsamples,      0, "Get raw samples as bitstring"},
 	{"buffclear",       CmdBuffClear,       1, "Clear sample buffer and graph window"},
 	{"dec",             CmdDec,             1, "Decimate samples"},
 	{"detectclock",     CmdDetectClockRate, 1, "[modulation] Detect clock rate of wave in GraphBuffer (options: 'a','f','n','p' for ask, fsk, nrz, psk respectively)"},
+	{"fdxbdemod",       CmdFDXBdemodBI    , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
 	{"fskawiddemod",    CmdFSKdemodAWID,    1, "Demodulate an AWID FSK tag from GraphBuffer"},
 	//{"fskfcdetect",   CmdFSKfcDetect,     1, "Try to detect the Field Clock of an FSK wave"},
 	{"fskhiddemod",     CmdFSKdemodHID,     1, "Demodulate a HID FSK tag from GraphBuffer"},
@@ -2279,23 +2411,23 @@ static command_t CommandTable[] =
 	{"getbitstream",    CmdGetBitStream,    1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
 	{"grid",            CmdGrid,            1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
 	{"hexsamples",      CmdHexsamples,      0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
+	{"hex2bin",         Cmdhex2bin,         1, "hex2bin <hexadecimal> -- Converts hexadecimal to binary"},
 	{"hide",            CmdHide,            1, "Hide graph window"},
 	{"hpf",             CmdHpf,             1, "Remove DC offset from trace"},
-	{"iso11784demod",   CmdIso11784demodBI, 1, "Demodulate a ISO11784/85 Biphase tag from GraphBuffer"},
 	{"load",            CmdLoad,            1, "<filename> -- Load trace (to graph window"},
 	{"ltrim",           CmdLtrim,           1, "<samples> -- Trim samples from left of trace"},
 	{"rtrim",           CmdRtrim,           1, "<location to end trace> -- Trim samples from right of trace"},
 	{"manrawdecode",    Cmdmandecoderaw,    1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
 	{"norm",            CmdNorm,            1, "Normalize max/min to +/-128"},
 	{"plot",            CmdPlot,            1, "Show graph window (hit 'h' in window for keystroke help)"},
-	{"printdemodbuffer",CmdPrintDemodBuff,  1, "[x] [o] <offset> -- print the data in the DemodBuffer - 'x' for hex output"},
+	{"printdemodbuffer",CmdPrintDemodBuff,  1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
 	{"pskindalademod",  CmdIndalaDecode,    1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
 	{"psknexwatchdemod",CmdPSKNexWatch,     1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
 	{"rawdemod",        CmdRawDemod,        1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},  
 	{"samples",         CmdSamples,         0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
 	{"save",            CmdSave,            1, "<filename> -- Save trace (from graph window)"},
 	{"scale",           CmdScale,           1, "<int> -- Set cursor display scale"},
-	{"setdebugmode",    CmdSetDebugMode,    1, "<0|1> -- Turn on or off Debugging Mode for demods"},
+	{"setdebugmode",    CmdSetDebugMode,    1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
 	{"shiftgraphzero",  CmdGraphShiftZero,  1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
 	{"dirthreshold",    CmdDirectionalThreshold,   1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
 	{"tune",            CmdTuneSamples,     0, "Get hw tune samples for graph window"},