X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/7bd30f12ac6def96c82df20ed7d927160db289af..149aeadaa609b01db86ba3b4ee23b317f16bede5:/client/ui.c

diff --git a/client/ui.c b/client/ui.c
index 1d85cc05..966ab2ca 100644
--- a/client/ui.c
+++ b/client/ui.c
@@ -18,7 +18,8 @@
 #include <pthread.h>
 #include "loclass/cipherutils.h"
 #include "ui.h"
-
+#include "cmdmain.h"
+#include "cmddata.h"
 //#include <liquid/liquid.h>
 #define M_PI 3.14159265358979323846264338327
 
@@ -100,8 +101,7 @@ int manchester_decode( int * data, const size_t len, uint8_t * dataout){
 	int i, clock, high, low, startindex;
 	low = startindex = 0;
 	high = 1;
-	uint8_t bitStream[len];
-	
+	uint8_t * bitStream =  (uint8_t* ) malloc(sizeof(uint8_t) * len);	
 	memset(bitStream, 0x00, len);
 	
 	/* Detect high and lows */
@@ -116,18 +116,15 @@ int manchester_decode( int * data, const size_t len, uint8_t * dataout){
 	clock = GetT55x7Clock( data, len, high );	
 	startindex = DetectFirstTransition(data, len, high);
   
-	//PrintAndLog(" Clock       : %d", clock);
-	//PrintAndLog(" startindex  : %d", startindex);
-	
+	PrintAndLog(" Clock       : %d", clock);
+
 	if (high != 1)
 		bitlength = ManchesterConvertFrom255(data, len, bitStream, high, low, clock, startindex);
 	else
 		bitlength= ManchesterConvertFrom1(data, len, bitStream, clock, startindex);
 
-	//if ( bitlength > 0 )
-	//	PrintPaddedManchester(bitStream, bitlength, clock);
-
 	memcpy(dataout, bitStream, bitlength);
+	free(bitStream);
 	return bitlength;
 }
 
@@ -238,8 +235,7 @@ int manchester_decode( int * data, const size_t len, uint8_t * dataout){
 		// No high value found, are we in a dampening field?
 		if ( !hithigh ) {
 			//PrintAndLog(" # Entering damp test at index : %d (%d)", z+j, j);
-			for (j = 0; j < clock; j++)
-			{
+			for (j = 0; j < clock; j++) {
 				if ( 
 				     (data[z+j] <= dampHi && data[z+j] >= dampLow)
 				   ){
@@ -395,91 +391,15 @@ void PrintPaddedManchester( uint8_t* bitStream, size_t len, size_t blocksize){
 		PrintAndLog(" %s", sprint_bin(bitStream+i, mod) );	
 }
 
-void iceFsk(int * data, const size_t len){
-
-	//34359738  == 125khz   (2^32 / 125) =
-	
-    // parameters
-    float phase_offset      = 0.00f;   // carrier phase offset
-    float frequency_offset  = 0.30f;   // carrier frequency offset
-    float wn                = 0.01f;   // pll bandwidth
-    float zeta              = 0.707f;  // pll damping factor
-    float K                 = 1000;    // pll loop gain
-    size_t n                = len;     // number of samples
-
-    // generate loop filter parameters (active PI design)
-    float t1 = K/(wn*wn);   // tau_1
-    float t2 = 2*zeta/wn;   // tau_2
-
-    // feed-forward coefficients (numerator)
-    float b0 = (4*K/t1)*(1.+t2/2.0f);
-    float b1 = (8*K/t1);
-    float b2 = (4*K/t1)*(1.-t2/2.0f);
-
-    // feed-back coefficients (denominator)
-    //    a0 =  1.0  is implied
-    float a1 = -2.0f;
-    float a2 =  1.0f;
-
-    // filter buffer
-    float v0=0.0f, v1=0.0f, v2=0.0f;
-    
-    // initialize states
-    float phi     = phase_offset;  // input signal's initial phase
-    float phi_hat = 0.0f;      // PLL's initial phase
-    
-    unsigned int i;
-    float complex x,y;
-	float complex output[n];
-	
-	for (i=0; i<n; i++) {
-		// INPUT SIGNAL
-		x = data[i];
-		phi += frequency_offset;
-		
-		// generate complex sinusoid
-		y = cosf(phi_hat) + _Complex_I*sinf(phi_hat);
-
-		output[i] = y;
-
-		// compute error estimate
-		float delta_phi = cargf( x * conjf(y) );
-
-		
-        // print results to standard output
-        printf("  %6u %12.8f %12.8f %12.8f %12.8f %12.8f\n",
-                  i,
-                  crealf(x), cimagf(x),
-                  crealf(y), cimagf(y),
-                  delta_phi);
-	
-		// push result through loop filter, updating phase estimate
-
-		// advance buffer
-		v2 = v1;  // shift center register to upper register
-		v1 = v0;  // shift lower register to center register
-
-		// compute new lower register
-		v0 = delta_phi - v1*a1 - v2*a2;
-
-		// compute new output
-		phi_hat = v0*b0 + v1*b1 + v2*b2;
-
-	}
-
-	for (i=0; i<len; ++i){
-		data[i] = (int)crealf(output[i]);
-	}
-}
-
 /* Sliding DFT
    Smooths out 
 */ 
 void iceFsk2(int * data, const size_t len){
 
 	int i, j;
-	int output[len];
-	
+	int * output =  (int* ) malloc(sizeof(int) * len);	
+	memset(output, 0x00, len);
+
 	// for (i=0; i<len-5; ++i){
 		// for ( j=1; j <=5; ++j) {
 			// output[i] += data[i*j];
@@ -499,27 +419,31 @@ void iceFsk2(int * data, const size_t len){
 	
 	for (j=0; j<len; ++j)
 		data[j] = output[j];
+		
+	free(output);
 }
 
 void iceFsk3(int * data, const size_t len){
 
 	int i,j;
-	int output[len];
-    float fc            = 0.1125f;          // center frequency
-
+	
+	int * output =  (int* ) malloc(sizeof(int) * len);	
+	memset(output, 0x00, len);
+	float fc           = 0.1125f;          // center frequency
+	size_t adjustedLen = len;
+	
     // create very simple low-pass filter to remove images (2nd-order Butterworth)
     float complex iir_buf[3] = {0,0,0};
     float b[3] = {0.003621681514929,  0.007243363029857, 0.003621681514929};
     float a[3] = {1.000000000000000, -1.822694925196308, 0.837181651256023};
     
-    // process entire input file one sample at a time
-    float         sample      = 0;      // input sample read from file
-    float complex x_prime     = 1.0f;   // save sample for estimating frequency
+    float sample           = 0;      // input sample read from file
+    float complex x_prime  = 1.0f;   // save sample for estimating frequency
     float complex x;
 		
-	for (i=0; i<len; ++i) {
+	for (i=0; i<adjustedLen; ++i) {
 
-		sample = data[i];
+		sample = data[i]+128;
 		
         // remove DC offset and mix to complex baseband
         x = (sample - 127.5f) * cexpf( _Complex_I * 2 * M_PI * fc * i );
@@ -541,29 +465,36 @@ void iceFsk3(int * data, const size_t len){
     } 
 
 	// show data
-	for (j=0; j<len; ++j)
+	for (j=0; j<adjustedLen; ++j)
 		data[j] = output[j];
 		
 	CmdLtrim("30");
+	adjustedLen -= 30;
 	
 	// zero crossings.
-	for (j=0; j<len; ++j){
+	for (j=0; j<adjustedLen; ++j){
 		if ( data[j] == 10) break;
 	}
 	int startOne =j;
 	
-	for (;j<len; ++j){
+	for (;j<adjustedLen; ++j){
 		if ( data[j] == -10 ) break;
 	}
 	int stopOne = j-1;
 	
 	int fieldlen = stopOne-startOne;
-	printf("FIELD Length: %d \n", fieldlen);
 	
+	fieldlen = (fieldlen == 39 || fieldlen == 41)? 40 : fieldlen;
+	fieldlen = (fieldlen == 59 || fieldlen == 51)? 50 : fieldlen;
+	if ( fieldlen != 40 && fieldlen != 50){
+		printf("Detected field Length: %d \n", fieldlen);
+		printf("Can only handle 40 or 50.  Aborting...\n");
+		return;
+	}
 	
 	// FSK sequence start == 000111
 	int startPos = 0;
-	for (i =0; i<len; ++i){
+	for (i =0; i<adjustedLen; ++i){
 		int dec = 0;
 		for ( j = 0; j < 6*fieldlen; ++j){
 			dec += data[i + j];
@@ -576,27 +507,24 @@ void iceFsk3(int * data, const size_t len){
 	
 	printf("000111 position: %d \n", startPos);
 
-	startPos += 6*fieldlen+1;
+	startPos += 6*fieldlen+5;
 	
+	int bit =0;
 	printf("BINARY\n");
 	printf("R/40 :  ");
-	for (i =startPos ; i < len; i += 40){
-		if ( data[i] > 0 ) 
-			printf("1");
-		else
-			printf("0");
+	for (i =startPos ; i < adjustedLen; i += 40){
+		bit = data[i]>0 ? 1:0;
+		printf("%d", bit );
 	}
 	printf("\n");	
 	
 	printf("R/50 :  ");
-	for (i =startPos ; i < len; i += 50){
-		if ( data[i] > 0 ) 
-			printf("1");
-		else
-			printf("0");
-	}
+	for (i =startPos ; i < adjustedLen; i += 50){
+		bit = data[i]>0 ? 1:0;
+		printf("%d", bit );	}
 	printf("\n");	
 	
+	free(output);
 }
 
 float complex cexpf (float complex Z)