]> cvs.zerfleddert.de Git - proxmark3-svn/blobdiff - client/ui.c
Merge branch 'master' of https://github.com/Proxmark/proxmark3
[proxmark3-svn] / client / ui.c
index 4f1b5d8592110011537405abf23c4669b36a30a3..6645a99ea5e5f7519380a6d2dc306c1cc9ae879f 100644 (file)
 #include <stdarg.h>
 #include <stdlib.h>
 #include <stdio.h>
+#include <stdbool.h>
 #include <time.h>
 #include <readline/readline.h>
 #include <pthread.h>
-
+#include "loclass/cipherutils.h"
 #include "ui.h"
+#include "cmdmain.h"
+#include "cmddata.h"
+#include "graph.h"
+//#include <liquid/liquid.h>
+#define M_PI 3.14159265358979323846264338327
 
 double CursorScaleFactor;
 int PlotGridX, PlotGridY, PlotGridXdefault= 64, PlotGridYdefault= 64;
 int offline;
-int flushAfterWrite = 0;  //buzzy
+int flushAfterWrite = 0;
 extern pthread_mutex_t print_lock;
 
 static char *logfilename = "proxmark3.log";
@@ -32,13 +38,13 @@ void PrintAndLog(char *fmt, ...)
        int saved_point;
        va_list argptr, argptr2;
        static FILE *logfile = NULL;
-       static int logging=1;
+       static int logging = 1;
 
        // lock this section to avoid interlacing prints from different threats
        pthread_mutex_lock(&print_lock);
   
        if (logging && !logfile) {
-               logfile=fopen(logfilename, "a");
+               logfile = fopen(logfilename, "a");
                if (!logfile) {
                        fprintf(stderr, "Can't open logfile, logging disabled!\n");
                        logging=0;
@@ -77,173 +83,135 @@ void PrintAndLog(char *fmt, ...)
        }
        va_end(argptr2);
 
-       if (flushAfterWrite == 1)  //buzzy
-       {
+       if (flushAfterWrite == 1) {
                fflush(NULL);
        }
        //release lock
        pthread_mutex_unlock(&print_lock);  
 }
 
-
 void SetLogFilename(char *fn)
 {
   logfilename = fn;
 }
 
-
-int manchester_decode(const int * data, const size_t len, uint8_t * dataout){
+int manchester_decode( int * data, const size_t len, uint8_t * dataout,  size_t dataoutlen){
        
        int bitlength = 0;
-       int i, clock, high, low, startindex;
+       int clock, high, low, startindex;
        low = startindex = 0;
        high = 1;
-       uint8_t bitStream[len];
-
-       memset(bitStream, 0x00, len);   
+       uint8_t * bitStream =  (uint8_t* ) malloc(sizeof(uint8_t) * dataoutlen);        
+       memset(bitStream, 0x00, dataoutlen);    
        
        /* Detect high and lows */
-       for (i = 0; i < len; i++) {
-               if (data[i] > high)
-                       high = data[i];
-               else if (data[i] < low)
-                       low = data[i];
-       }
-       
+       DetectHighLowInGraph(&high, &low, TRUE); 
+
        /* get clock */
-       clock = GetT55x7Clock( data, len, high );       
-       startindex = DetectFirstTransition(data, len, high, low);
+       clock = GetAskClock("",false, false);
+
+       startindex = DetectFirstTransition(data, len, high);
   
-       PrintAndLog(" Clock      : %d", clock);
-       PrintAndLog(" startindex : %d", startindex);
-       
        if (high != 1)
-               bitlength = ManchesterConvertFrom255(data, len, bitStream, high, low, clock, startindex);
+               // decode "raw"
+               bitlength = ManchesterConvertFrom255(data, len, bitStream, dataoutlen, high, low, clock, startindex);
        else
-               bitlength= ManchesterConvertFrom1(data, len, bitStream, clock, startindex);
-
-       if ( bitlength > 0 ){
-               PrintPaddedManchester(bitStream, bitlength, clock);
-       }
+               // decode manchester
+               bitlength = ManchesterConvertFrom1(data, len, bitStream, dataoutlen, clock, startindex);
 
        memcpy(dataout, bitStream, bitlength);
-       
        free(bitStream);
        return bitlength;
 }
-
- int GetT55x7Clock( const int * data, const size_t len, int peak ){ 
  
-       int i,lastpeak,clock;
-       clock = 0xFFFF;
-       lastpeak = 0;
-       
-       /* Detect peak if we don't have one */
-       if (!peak) {
-               for (i = 0; i < len; ++i) {
-                       if (data[i] > peak) {
-                               peak = data[i];
-                       }
-               }
-       }
-       
-       for (i = 1; i < len; ++i) {
-               /* if this is the beginning of a peak */
-               if ( data[i-1] != data[i] &&  data[i] == peak) {
-                 /* find lowest difference between peaks */
-                       if (lastpeak && i - lastpeak < clock)
-                               clock = i - lastpeak;
-                       lastpeak = i;
-               }
-       }
-       //return clock;  
-       //defaults clock to precise values.
-       switch(clock){
-               case 8:
-               case 16:
-               case 32:
-               case 40:
-               case 50:
-               case 64:
-               case 100:
-               case 128:
-               return clock;
-               break;
-               default:  break;
-       }
-       return 32;
- }
- int DetectFirstTransition(const int * data, const size_t len, int high, int low){
+ int DetectFirstTransition(const int * data, const size_t len, int threshold){
 
-       int i, retval;
-       retval = 0;
-       /* 
-               Detect first transition Lo-Hi (arbitrary)       
-               skip to the first high
-       */
-         for (i = 0; i < len; ++i)
-               if (data[i] == high)
-                 break;
-                 
-         /* now look for the first low */
-         for (; i < len; ++i) {
-               if (data[i] == low) {
-                       retval = i;
+       int i = 0;
+       /* now look for the first threshold */
+       for (; i < len; ++i) {
+               if (data[i] == threshold) {
                        break;
                }
-         }
-       return retval;
+       }
+       return i;
  }
 
- int ManchesterConvertFrom255(const int * data, const size_t len, uint8_t * dataout, int high, int low, int clock, int startIndex){
+ int ManchesterConvertFrom255(const int * data, const size_t len, uint8_t * dataout, int dataoutlen, int high, int low, int clock, int startIndex){
 
-       int i, j, hithigh, hitlow, first, bit, bitIndex;
-       i = startIndex;
+       int i, j, z, hithigh, hitlow, bitIndex, startType;
+       i = 0;
        bitIndex = 0;
-
-       /*
-       * We assume the 1st bit is zero, it may not be
-       * the case: this routine (I think) has an init problem.
-       * Ed.
-       */
-       bit = 0; 
-
-       for (; i < (int)(len / clock); i++)
+       
+       int isDamp = 0;
+       int damplimit = (int)((high / 2) * 0.3);
+       int dampHi =  (high/2)+damplimit;
+       int dampLow = (high/2)-damplimit;
+       int firstST = 0;
+
+       // i = clock frame of data
+       for (; i < (int)(len/clock); i++)
        {
                hithigh = 0;
                hitlow = 0;
-               first = 1;
-
+               startType = -1;
+               z = startIndex + (i*clock);
+               isDamp = 0;
+                       
                /* Find out if we hit both high and low peaks */
                for (j = 0; j < clock; j++)
-               {
-                       if (data[(i * clock) + j] == high)
+               {               
+                       if (data[z+j] == high){
                                hithigh = 1;
-                       else if (data[(i * clock) + j] == low)
+                               if ( startType == -1)
+                                       startType = 1;
+                       }
+                       
+                       if (data[z+j] == low ){
                                hitlow = 1;
-
-                       /* it doesn't count if it's the first part of our read
-                          because it's really just trailing from the last sequence */
-                       if (first && (hithigh || hitlow))
-                         hithigh = hitlow = 0;
-                       else
-                         first = 0;
-
+                               if ( startType == -1)
+                                       startType = 0;
+                       } 
+               
                        if (hithigh && hitlow)
                          break;
                }
+               
+               // 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++) {
+                               if ( 
+                                    (data[z+j] <= dampHi && data[z+j] >= dampLow)
+                                  ){
+                                  isDamp++;
+                               }
+                       }
+               }
 
-               /* If we didn't hit both high and low peaks, we had a bit transition */
-               if (!hithigh || !hitlow)
-                       bit ^= 1;
-
-               dataout[bitIndex++] = bit;
+               /*  Manchester Switching..
+                       0: High -> Low   
+                       1: Low -> High  
+               */
+               if (startType == 0)
+                       dataout[bitIndex++] = 1;
+               else if (startType == 1) 
+                       dataout[bitIndex++] = 0;
+               else
+                       dataout[bitIndex++] = 2;
+                       
+               if ( isDamp > clock/2 ) {
+                       firstST++;
+               }
+               
+               if ( firstST == 4)
+                       break;
+               if ( bitIndex >= dataoutlen-1 )
+                       break;
        }
        return bitIndex;
  }
  
- int ManchesterConvertFrom1(const int * data, const size_t len, uint8_t * dataout, int clock, int startIndex){
+ int ManchesterConvertFrom1(const int * data, const size_t len, uint8_t * dataout,int dataoutlen, int clock, int startIndex){
 
        int i,j, bitindex, lc, tolerance, warnings;
        warnings = 0;
@@ -253,7 +221,7 @@ int manchester_decode(const int * data, const size_t len, uint8_t * dataout){
        tolerance = clock/4;
        uint8_t decodedArr[len];
        
-       /* Then detect duration between 2 successive transitions */
+       /* Detect duration between 2 successive transitions */
        for (bitindex = 1; i < len; i++) {
        
                if (data[i-1] != data[i]) {
@@ -350,19 +318,164 @@ int manchester_decode(const int * data, const size_t len, uint8_t * dataout){
        PrintAndLog("%s", sprint_hex(decodedArr, j));
 }
  
 void PrintPaddedManchester( uint8_t* bitStream, size_t len, size_t blocksize){
 
-         PrintAndLog(" Manchester decoded bitstream : %d bits", len);
+       PrintAndLog(" Manchester decoded  : %d bits", len);
          
-         uint8_t mod = len % blocksize;
-         uint8_t div = len / blocksize;
-         int i;
-         // Now output the bitstream to the scrollback by line of 16 bits
-         for (i = 0; i < div*blocksize; i+=blocksize) {
+       uint8_t mod = len % blocksize;
+       uint8_t div = len / blocksize;
+       int i;
+  
+       // Now output the bitstream to the scrollback by line of 16 bits
+       for (i = 0; i < div*blocksize; i+=blocksize) {
                PrintAndLog(" %s", sprint_bin(bitStream+i,blocksize) );
-         }
-         if ( mod > 0 ){
-               PrintAndLog(" %s", sprint_bin(bitStream+i, mod) );
-         }
+       }
+       
+       if ( mod > 0 )
+               PrintAndLog(" %s", sprint_bin(bitStream+i, mod) );      
+}
+
+/* Sliding DFT
+   Smooths out 
+*/ 
+void iceFsk2(int * data, const size_t len){
+
+       int i, j;
+       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];
+               // }
+               // output[i] /= 5;
+       // }
+       int rest = 127;
+       int tmp =0;
+       for (i=0; i<len; ++i){
+               if ( data[i] < 127)
+                       output[i] = 0;
+               else {
+                       tmp =  (100 * (data[i]-rest)) / rest;
+                       output[i] = (tmp > 60)? 100:0;
+               }
+       }
+       
+       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 =  (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};
+    
+    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<adjustedLen; ++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 );
+
+        // apply low-pass filter, removing spectral image (IIR using direct-form II)
+        iir_buf[2] = iir_buf[1];
+        iir_buf[1] = iir_buf[0];
+        iir_buf[0] = x - a[1]*iir_buf[1] - a[2]*iir_buf[2];
+        x          = b[0]*iir_buf[0] +
+                     b[1]*iir_buf[1] +
+                     b[2]*iir_buf[2];
+                                        
+        // compute instantaneous frequency by looking at phase difference
+        // between adjacent samples
+        float freq = cargf(x*conjf(x_prime));
+        x_prime = x;    // retain this sample for next iteration
+
+               output[i] =(freq > 0)? 10 : -10;
+    } 
+
+       // show data
+       for (j=0; j<adjustedLen; ++j)
+               data[j] = output[j];
+               
+       CmdLtrim("30");
+       adjustedLen -= 30;
+       
+       // zero crossings.
+       for (j=0; j<adjustedLen; ++j){
+               if ( data[j] == 10) break;
+       }
+       int startOne =j;
+       
+       for (;j<adjustedLen; ++j){
+               if ( data[j] == -10 ) break;
+       }
+       int stopOne = j-1;
+       
+       int fieldlen = stopOne-startOne;
+       
+       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<adjustedLen; ++i){
+               int dec = 0;
+               for ( j = 0; j < 6*fieldlen; ++j){
+                       dec += data[i + j];
+               }
+               if (dec == 0) {
+                       startPos = i;
+                       break;
+               }
+       }
+       
+       printf("000111 position: %d \n", startPos);
+
+       startPos += 6*fieldlen+5;
+       
+       int bit =0;
+       printf("BINARY\n");
+       printf("R/40 :  ");
+       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 < adjustedLen; i += 50){
+               bit = data[i]>0 ? 1:0;
+               printf("%d", bit );     }
+       printf("\n");   
+       
+       free(output);
+}
+
+float complex cexpf (float complex Z)
+{
+  float complex  Res;
+  double rho = exp (__real__ Z);
+  __real__ Res = rho * cosf(__imag__ Z);
+  __imag__ Res = rho * sinf(__imag__ Z);
+  return Res;
 }
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