CHG: "hf legic decode" now prints nicely. Still a strange bug for first row..

[proxmark3-svn] / client / ui.c

diff --git a/client/ui.c b/client/ui.c
index c0d01bc32983a2efb313f99640d745ce3af8cde9..0dc9118b2835a737f38cd4bc69f66a7fbe068a35 100644 (file)
--- a/client/ui.c
+++ b/client/ui.c
@@ -12,16 +12,21 @@
 #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"
+#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 +37,13 @@ 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;
@@ -77,16 +82,127 @@ 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;
+}
+ 
+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
 
-void SetLogFilename(char *fn)
+               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");
+               free(output);
+               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)
 {
-  logfilename = fn;
+  float complex  Res;
+  double rho = exp (__real__ Z);
+  __real__ Res = rho * cosf(__imag__ Z);
+  __imag__ Res = rho * sinf(__imag__ Z);
+  return Res;
 }