ADD: `analyse nuid` - generates NUID 4byte from a UID 7byte. Mifare Classic Ev1...

[proxmark3-svn] / client / ui.c

diff --git a/client/ui.c b/client/ui.c
index 6486d5243fa9c35d5e0df306acdec7255de7f141..2c344b680713c747e152afb340c8236fa1d3d632 100644 (file)
--- a/client/ui.c
+++ b/client/ui.c
@@ -9,19 +9,15 @@
 // UI utilities
 //-----------------------------------------------------------------------------
 
 // UI utilities
 //-----------------------------------------------------------------------------
 

-#include <stdarg.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <time.h>
-#include <readline/readline.h>
-#include <pthread.h>
-

 #include "ui.h"
 
 #include "ui.h"
 

+// set QT vars

 double CursorScaleFactor;
 double CursorScaleFactor;

-int PlotGridX, PlotGridY, PlotGridXdefault= 64, PlotGridYdefault= 64;
+int PlotGridX, PlotGridY, PlotGridXdefault = 64, PlotGridYdefault = 64, CursorCPos = 0, CursorDPos = 0;
+int PlotClock = 0, PlockClockStartIndex = 0;
+

 int offline;
 int offline;

-int flushAfterWrite = 0;  //buzzy
+int flushAfterWrite = 0;

 extern pthread_mutex_t print_lock;
 
 static char *logfilename = "proxmark3.log";
 extern pthread_mutex_t print_lock;
 
 static char *logfilename = "proxmark3.log";


@@ -32,13 +28,16 @@ void PrintAndLog(char *fmt, ...)
        int saved_point;
        va_list argptr, argptr2;
        static FILE *logfile = NULL;
        int saved_point;
        va_list argptr, argptr2;
        static FILE *logfile = NULL;

-       static int logging=1;
-
+       static int logging = 1;
+       // time_t current_time;
+       // struct tm* tm_info;
+       // char buffer[26] = {0};
+               

        // lock this section to avoid interlacing prints from different threats
        pthread_mutex_lock(&print_lock);
   
        if (logging && !logfile) {
        // 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;
                if (!logfile) {
                        fprintf(stderr, "Can't open logfile, logging disabled!\n");
                        logging=0;


@@ -71,214 +70,112 @@ void PrintAndLog(char *fmt, ...)
        }
        
        if (logging && logfile) {
        }
        
        if (logging && logfile) {

+
+               /*
+               // Obtain current time.
+               current_time = time(NULL);
+               // Convert to local time format.
+               tm_info = localtime(&current_time);             
+               strftime(buffer, 26, "%Y-%m-%d %H:%M:%S", tm_info);
+               fprintf(logfile, "%s  ", buffer);
+               */
+               

                vfprintf(logfile, fmt, argptr2);
                fprintf(logfile,"\n");
                fflush(logfile);
        }
        va_end(argptr2);
 
                vfprintf(logfile, fmt, argptr2);
                fprintf(logfile,"\n");
                fflush(logfile);
        }
        va_end(argptr2);
 

-       if (flushAfterWrite == 1)  //buzzy
-       {
+       if (flushAfterWrite == 1) {

                fflush(NULL);
        }
        //release lock
        pthread_mutex_unlock(&print_lock);  
 }
 
                fflush(NULL);
        }
        //release lock
        pthread_mutex_unlock(&print_lock);  
 }
 

-
-void SetLogFilename(char *fn)
-{
-  logfilename = fn;
+void SetLogFilename(char *fn) {
+       logfilename = fn;

 }
 }

+ 
+void iceIIR_Butterworth(int *data, const size_t len){

 
 

-
-uint8_t manchester_decode(const uint8_t * data, const size_t len, uint8_t * dataout){
-       
-       size_t bytelength = len;
+       int i,j;

        
        

-       uint8_t bitStream[bytelength];
-       memset(bitStream, 0x00, bytelength);
+       int * output =  (int* ) malloc(sizeof(int) * len);      
+       if ( !output ) return;

        
        

-       int clock,high, low, bit, hithigh, hitlow, first, bit2idx, lastpeak;
-       int i,invert, lastval;
-       int bitidx = 0;
-       int lc = 0;
-       int warnings = 0;
-       high = 1;
-       low =  bit = bit2idx = lastpeak = invert = lastval = hithigh = hitlow = first = 0;
-       clock = 0xFFFF;
-
-       /* Detect high and lows */
-       for (i = 0; i < bytelength; i++) {
-               if (data[i] > high)
-                       high = data[i];
-               else if (data[i] < low)
-                       low = data[i];
-       }
+       // clear mem
+       memset(output, 0x00, len);

        
        

-       /* get clock */
-       int j=0;
-       for (i = 1; i < bytelength; i++) {
-               /* if this is the beginning of a peak */
-               j = i-1;
-               if ( data[j] != data[i] && 
-                    data[i] == high)
-               {
-                 /* find lowest difference between peaks */
-                       if (lastpeak && i - lastpeak < clock)
-                               clock = i - lastpeak;
-                       lastpeak = i;
-               }
-       }
+       size_t adjustedLen = len;
+       float fc = 0.1125f;          // center frequency
+               
+    // 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};

     
     

-       int tolerance = clock/4;
-       PrintAndLog(" Detected clock: %d",clock);
-
-       /* Detect first transition */
-         /* Lo-Hi (arbitrary)       */
-         /* skip to the first high */
-         for (i= 0; i < bytelength; i++)
-               if (data[i] == high)
-                 break;
-                 
-         /* now look for the first low */
-         for (; i < bytelength; i++) {
-               if (data[i] == low) {
-                       lastval = i;
-                       break;
-               }
-         }
-         
-       /* If we're not working with 1/0s, demod based off clock */
-       if (high != 1)
-       {
-               bit = 0; /* We assume the 1st bit is zero, it may not be
-                         * the case: this routine (I think) has an init problem.
-                         * Ed.
-                         */
-               for (; i < (int)(bytelength / clock); i++)
-               {
-               hithigh = 0;
-               hitlow = 0;
-               first = 1;
+    float sample           = 0;      // input sample read from array
+    float complex x_prime  = 1.0f;   // save sample for estimating frequency
+    float complex x;
+               
+       for (i = 0; i < adjustedLen; ++i) {

 
 

-               /* Find out if we hit both high and low peaks */
-               for (j = 0; j < clock; j++)
-               {
-                       if (data[(i * clock) + j] == high)
-                               hithigh = 1;
-                       else if (data[(i * clock) + j] == low)
-                               hitlow = 1;
+               sample = data[i];
+               
+        // 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) ? 127 : -127;
+    } 
+
+       // show data
+       //memcpy(data, output, adjustedLen);
+       for (j=0; j<adjustedLen; ++j)
+               data[j] = output[j];
+       
+       free(output);
+}

 
 

-                       /* 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;
+void iceSimple_Filter(int *data, const size_t len, uint8_t k){
+// ref: http://www.edn.com/design/systems-design/4320010/A-simple-software-lowpass-filter-suits-embedded-system-applications
+// parameter K
+#define FILTER_SHIFT 4 

 
 

-                       if (hithigh && hitlow)
-                         break;
-                 }
+       int32_t filter_reg = 0;
+       int16_t input, output;
+       int8_t shift = (k <=8 ) ? k : FILTER_SHIFT;

 
 

-                 /* If we didn't hit both high and low peaks, we had a bit transition */
-                 if (!hithigh || !hitlow)
-                       bit ^= 1;
+       for (int i = 0; i < len; ++i){

 
 

-                 bitStream[bit2idx++] = bit ^ invert;
-               }
-       }
-       /* standard 1/0 bitstream */
-  else {
-               /* Then detect duration between 2 successive transitions */
-               for (bitidx = 1; i < bytelength; i++) {
-               
-                       if (data[i-1] != data[i]) {
-                               lc = i-lastval;
-                               lastval = i;
+               input = data[i];
+               // Update filter with current sample
+               filter_reg = filter_reg - (filter_reg >> shift) + input;

 
 

-                               // Error check: if bitidx becomes too large, we do not
-                               // have a Manchester encoded bitstream or the clock is really
-                               // wrong!
-                               if (bitidx > (bytelength*2/clock+8) ) {
-                                       PrintAndLog("Error: the clock you gave is probably wrong, aborting.");
-                                       return 0;
-                               }
-                               // Then switch depending on lc length:
-                               // Tolerance is 1/4 of clock rate (arbitrary)
-                               if (abs(lc-clock/2) < tolerance) {
-                                       // Short pulse : either "1" or "0"
-                                       bitStream[bitidx++] = data[i-1];
-                               } else if (abs(lc-clock) < tolerance) {
-                                       // Long pulse: either "11" or "00"
-                                       bitStream[bitidx++] = data[i-1];
-                                       bitStream[bitidx++] = data[i-1];
-                               } else {
-                                       // Error
-                                       warnings++;
-                                       PrintAndLog("Warning: Manchester decode error for pulse width detection.");
-                                       if (warnings > 10) {
-                                               PrintAndLog("Error: too many detection errors, aborting.");
-                                               return 0;
-                                       }
-                               }
-                       }
-               }
+               // Scale output for unity gain
+               output = filter_reg >> shift;
+               data[i] = output;

        }
        }

-       // At this stage, we now have a bitstream of "01" ("1") or "10" ("0"), parse it into final decoded bitstream
-    // Actually, we overwrite BitStream with the new decoded bitstream, we just need to be careful
-    // to stop output at the final bitidx2 value, not bitidx
-    for (i = 0; i < bitidx; i += 2) {
-               if ((bitStream[i] == 0) && (bitStream[i+1] == 1)) {
-                       bitStream[bit2idx++] = 1 ^ invert;
-               } 
-               else if ((bitStream[i] == 1) && (bitStream[i+1] == 0)) {
-                       bitStream[bit2idx++] = 0 ^ invert;
-               } 
-               else {
-                       // We cannot end up in this state, this means we are unsynchronized,
-                       // move up 1 bit:
-                       i++;
-                       warnings++;
-                       PrintAndLog("Unsynchronized, resync...");
-                       if (warnings > 10) {
-                               PrintAndLog("Error: too many decode errors, aborting.");
-                               return 0;
-                       }
-               }
-    }
-
-         // PrintAndLog(" Manchester decoded bitstream : %d bits", (bit2idx-16));
-         // uint8_t mod = (bit2idx-16) % blocksize;
-         // uint8_t div = (bit2idx-16) / blocksize;
-         
-         // // 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 ( bit2idx > 0 )
-               memcpy(dataout, bitStream, bit2idx);
-       
-       free(bitStream);
-       return bit2idx;

 }
 
 }
 

-void PrintPaddedManchester( uint8_t* bitStream, size_t len, size_t blocksize){
-
-         PrintAndLog(" Manchester decoded bitstream : %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) {
-               PrintAndLog(" %s", sprint_bin(bitStream+i,blocksize) );
-         }
-         if ( mod > 0 ){
-               PrintAndLog(" %s", sprint_bin(bitStream+i, mod) );
-         }
+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;

 }
 }