Merge pull request #63 from marshmellow42/master

[proxmark3-svn] / client / graph.c

diff --git a/client/graph.c b/client/graph.c
index 6362c8fe242dc438914b5f34135db9874737b91d..11dbc4d595294abaf178fa918b4411e58ac7243f 100644 (file)
--- a/client/graph.c
+++ b/client/graph.c
@@ -9,6 +9,7 @@
 //-----------------------------------------------------------------------------
 
 #include <stdio.h>
 //-----------------------------------------------------------------------------
 
 #include <stdio.h>

+#include <stdbool.h>

 #include <string.h>
 #include "ui.h"
 #include "graph.h"
 #include <string.h>
 #include "ui.h"
 #include "graph.h"


@@ -50,65 +51,173 @@ int ClearGraph(int redraw)
 
 void setGraphBuf(uint8_t *buff, size_t size)
 {
 
 void setGraphBuf(uint8_t *buff, size_t size)
 {

-  int i=0;
-  ClearGraph(0);
-  for (; i < size; ++i){
+       if ( buff == NULL ) return;
+       
+       uint16_t i = 0;  
+       if ( size > MAX_GRAPH_TRACE_LEN )
+               size = MAX_GRAPH_TRACE_LEN;
+       ClearGraph(0);
+       for (; i < size; ++i){

                GraphBuffer[i]=buff[i]-128;
                GraphBuffer[i]=buff[i]-128;

-  }
-  GraphTraceLen=size;
-  RepaintGraphWindow();
-  return;
+       }
+       GraphTraceLen=size;
+       RepaintGraphWindow();
+       return;

 }
 size_t getFromGraphBuf(uint8_t *buff)
 {
 }
 size_t getFromGraphBuf(uint8_t *buff)
 {

-  uint32_t i;
-  for (i=0;i<GraphTraceLen;++i){
-    if (GraphBuffer[i]>127) GraphBuffer[i]=127; //trim
-    if (GraphBuffer[i]<-127) GraphBuffer[i]=-127; //trim
-    buff[i]=(uint8_t)(GraphBuffer[i]+128);
-  }
-  return i;
+       if (buff == NULL ) return 0;
+       uint32_t i;
+       for (i=0;i<GraphTraceLen;++i){
+               if (GraphBuffer[i]>127) GraphBuffer[i]=127; //trim
+               if (GraphBuffer[i]<-127) GraphBuffer[i]=-127; //trim
+               buff[i]=(uint8_t)(GraphBuffer[i]+128);
+       }
+       return i;
+}
+
+// A simple test to see if there is any data inside Graphbuffer. 
+bool HasGraphData(){
+
+       if ( GraphTraceLen <= 0) {
+               PrintAndLog("No data available, try reading something first");
+               return false;
+       }
+       return true;    
+}
+
+// Detect high and lows in Grapbuffer.
+// Only loops the first 256 values. 
+void DetectHighLowInGraph(int *high, int *low, bool addFuzz) {
+
+       uint8_t loopMax = 255;
+       if ( loopMax > GraphTraceLen)
+               loopMax = GraphTraceLen;
+  
+       for (uint8_t i = 0; i < loopMax; ++i) {
+               if (GraphBuffer[i] > *high)
+                       *high = GraphBuffer[i];
+               else if (GraphBuffer[i] < *low)
+                       *low = GraphBuffer[i];
+       }
+       
+       //12% fuzz in case highs and lows aren't clipped
+       if (addFuzz) {
+               *high = (int)(*high * .88);
+               *low  = (int)(*low  * .88);
+       }
+}
+
+// Get or auto-detect ask clock rate
+int GetAskClock(const char str[], bool printAns, bool verbose)
+{
+       int clock;
+       sscanf(str, "%i", &clock);
+       if (!strcmp(str, ""))
+               clock = 0;
+
+       if (clock != 0) 
+               return clock;
+       // Auto-detect clock
+       uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
+       size_t size = getFromGraphBuf(grph);
+       if (size == 0) {
+               if (verbose)
+                       PrintAndLog("Failed to copy from graphbuffer");
+               return -1;
+       }
+       DetectASKClock(grph, size, &clock, 20);
+       // Only print this message if we're not looping something
+       if (printAns){
+               PrintAndLog("Auto-detected clock rate: %d", clock);
+       }
+       return clock;

 }
 }

-// Get or auto-detect clock rate
-int GetClock(const char *str, int peak, int verbose)
+
+int GetPskClock(const char str[], bool printAns, bool verbose)

 {
 {

-  int clock;
-  sscanf(str, "%i", &clock);
-  if (!strcmp(str, ""))
-    clock = 0;
+       int clock;
+       sscanf(str, "%i", &clock);
+       if (!strcmp(str, "")) 
+               clock = 0;

 
 

+       if (clock!=0) 
+               return clock;

        // Auto-detect clock
        // Auto-detect clock

-  if (!clock)
-  {
-    uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
-               size_t size = getFromGraphBuf(grph);
-    clock = DetectASKClock(grph,size,0);
-               // Only print this message if we're not looping something
-    if (!verbose){
-      PrintAndLog("Auto-detected clock rate: %d", clock);
-    }
-  }
-
-  return clock;
+       uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
+       size_t size = getFromGraphBuf(grph);
+       if ( size == 0 ) {
+               if (verbose) 
+                       PrintAndLog("Failed to copy from graphbuffer");
+               return -1;
+       }
+       clock = DetectPSKClock(grph,size,0);
+       // Only print this message if we're not looping something
+       if (printAns){
+               PrintAndLog("Auto-detected clock rate: %d", clock);
+       }
+       return clock;

 }
 
 }
 

-int GetNRZpskClock(const char *str, int peak, int verbose)
+uint8_t GetNrzClock(const char str[], bool printAns, bool verbose)

 {
        int clock;
        sscanf(str, "%i", &clock);
        if (!strcmp(str, ""))
                clock = 0;
 
 {
        int clock;
        sscanf(str, "%i", &clock);
        if (!strcmp(str, ""))
                clock = 0;
 

+       if (clock!=0) 
+               return clock;

        // Auto-detect clock
        // Auto-detect clock

-       if (!clock)
-       {
-               uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
-               size_t size = getFromGraphBuf(grph);
-               clock = DetectpskNRZClock(grph,size,0);
-               // Only print this message if we're not looping something
-               if (!verbose){
-                       PrintAndLog("Auto-detected clock rate: %d", clock);
-               }
+       uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
+       size_t size = getFromGraphBuf(grph);
+       if ( size == 0 ) {
+               if (verbose) 
+                       PrintAndLog("Failed to copy from graphbuffer");
+               return -1;
+       }
+       clock = DetectNRZClock(grph, size, 0);
+       // Only print this message if we're not looping something
+       if (printAns){
+               PrintAndLog("Auto-detected clock rate: %d", clock);

        }
        return clock;
 }
        }
        return clock;
 }

+//by marshmellow
+//attempt to detect the field clock and bit clock for FSK
+uint8_t GetFskClock(const char str[], bool printAns, bool verbose)
+{
+       int clock;
+       sscanf(str, "%i", &clock);
+       if (!strcmp(str, ""))
+               clock = 0;
+       if (clock != 0) return (uint8_t)clock;
+
+       uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+       size_t size = getFromGraphBuf(BitStream);
+       if (size==0) return 0;
+       uint8_t dummy = 0;
+       uint16_t ans = countFC(BitStream, size, &dummy); 
+       if (ans==0) {
+               if (verbose) PrintAndLog("DEBUG: No data found");
+               return 0;
+       }
+       uint8_t fc1, fc2;
+       fc1 = (ans >> 8) & 0xFF;
+       fc2 = ans & 0xFF;
+
+       uint8_t rf1 = detectFSKClk(BitStream, size, fc1, fc2);
+       if (rf1==0) {
+               if (verbose) PrintAndLog("DEBUG: Clock detect error");
+               return 0;
+       }
+       if ((fc1==10 && fc2==8) || (fc1==8 && fc2==5)){
+               if (printAns) PrintAndLog("Detected Field Clocks: FC/%d, FC/%d - Bit Clock: RF/%d", fc1, fc2, rf1);
+               return rf1;
+       }
+       if (verbose){
+               PrintAndLog("DEBUG: unknown fsk field clock detected");
+               PrintAndLog("Detected Field Clocks: FC/%d, FC/%d - Bit Clock: RF/%d", fc1, fc2, rf1);
+       }
+       return 0;
+}