Merge pull request #12 from k02a/patch-1

[proxmark3-svn] / client / graph.c

diff --git a/client/graph.c b/client/graph.c
index d0f6fe74fce36b1f1e6a2fd1a9ae73f14c82f6ef..c22b7a3d9d44ef22db1d69c465639e8ed673bab8 100644 (file)
--- a/client/graph.c
+++ b/client/graph.c
@@ -17,39 +17,56 @@
 
 int GraphBuffer[MAX_GRAPH_TRACE_LEN];
 int GraphTraceLen;
 
 int GraphBuffer[MAX_GRAPH_TRACE_LEN];
 int GraphTraceLen;

-
-/* write a bit to the graph */
+/* write a manchester bit to the graph */

 void AppendGraph(int redraw, int clock, int bit)
 {
   int i;
 void AppendGraph(int redraw, int clock, int bit)
 {
   int i;

-  int half = (int)(clock/2);
-  int firstbit = bit ^ 1;
- 
-  for (i = 0; i < half; ++i)
-    GraphBuffer[GraphTraceLen++] = firstbit;
-  
-  for (i = 0; i <= half; ++i)
-    GraphBuffer[GraphTraceLen++] = bit;
+  //set first half the clock bit (all 1's or 0's for a 0 or 1 bit) 
+  for (i = 0; i < (int)(clock / 2); ++i)
+    GraphBuffer[GraphTraceLen++] = bit ;
+  //set second half of the clock bit (all 0's or 1's for a 0 or 1 bit)
+  for (i = (int)(clock / 2); i < clock; ++i)
+    GraphBuffer[GraphTraceLen++] = bit ^ 1;

 
   if (redraw)
     RepaintGraphWindow();
 }
 
 
   if (redraw)
     RepaintGraphWindow();
 }
 

-/* clear out our graph window */
+// clear out our graph window

 int ClearGraph(int redraw)
 {
   int gtl = GraphTraceLen;
   memset(GraphBuffer, 0x00, GraphTraceLen);
 
   GraphTraceLen = 0;
 int ClearGraph(int redraw)
 {
   int gtl = GraphTraceLen;
   memset(GraphBuffer, 0x00, GraphTraceLen);
 
   GraphTraceLen = 0;

- 
+

   if (redraw)
     RepaintGraphWindow();
 
   return gtl;
 }
   if (redraw)
     RepaintGraphWindow();
 
   return gtl;
 }

+// option '1' to save GraphBuffer any other to restore
+void save_restoreGB(uint8_t saveOpt)
+{
+       static int SavedGB[MAX_GRAPH_TRACE_LEN];
+       static int SavedGBlen;
+       static bool GB_Saved = false;

 
 

-void SetGraphBuf(uint8_t *buff, int size) 
+       if (saveOpt==1) { //save
+               memcpy(SavedGB, GraphBuffer, sizeof(GraphBuffer));
+               SavedGBlen = GraphTraceLen;
+               GB_Saved=true;
+       } else if (GB_Saved){ //restore
+               memcpy(GraphBuffer, SavedGB, sizeof(GraphBuffer));
+               GraphTraceLen = SavedGBlen;
+               RepaintGraphWindow();
+       }
+       return;
+}
+
+// DETECT CLOCK NOW IN LFDEMOD.C
+
+void setGraphBuf(uint8_t *buff, size_t size)

 {
        if ( buff == NULL ) return;
        
 {
        if ( buff == NULL ) return;
        


@@ -58,58 +75,23 @@ void SetGraphBuf(uint8_t *buff, int size)
                size = MAX_GRAPH_TRACE_LEN;
        ClearGraph(0);
        for (; i < size; ++i){
                size = MAX_GRAPH_TRACE_LEN;
        ClearGraph(0);
        for (; i < size; ++i){

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

        }
        }

-       GraphTraceLen = size;
+       GraphTraceLen=size;

        RepaintGraphWindow();
        return;
 }
        RepaintGraphWindow();
        return;
 }

-
-// Copies grahpbuff to buff. 
-// while triming values to the range -127 -- 127.
-int GetFromGraphBuf(uint8_t *buff)
+size_t getFromGraphBuf(uint8_t *buff)

 {
 {

-       if ( buff == NULL ) return -1;
-       uint32_t i = 0;
-       
-       for (; i < GraphTraceLen; ++i){
-       
-               // trim upper and lower values.
-               if (GraphBuffer[i] > 127) 
-                       GraphBuffer[i] = 127;
-               else if (GraphBuffer[i] < -127)
-                       GraphBuffer[i] = -127;
-                       
-               buff[i] = (uint8_t)(GraphBuffer[i] + 128);
+       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;
 }
        }
        return i;
 }

-/* Get or auto-detect clock rate */
-int GetClock(const char *str, int verbose)
-{
-       int clock;
-
-       sscanf(str, "%i", &clock);
-       if (!strcmp(str, ""))
-               clock = 0;
-
-       /* Auto-detect clock */
-       if (!clock) {
-
-               uint8_t grph[MAX_GRAPH_TRACE_LEN] = {0x00};
-               int size = GetFromGraphBuf(grph);
-               if ( size < 0 ) {
-                       PrintAndLog("Failed to copy from graphbuffer");
-                       return -1;
-               }
-               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;
-}

 
 // A simple test to see if there is any data inside Graphbuffer. 
 bool HasGraphData(){
 
 // A simple test to see if there is any data inside Graphbuffer. 
 bool HasGraphData(){


@@ -141,4 +123,148 @@ void DetectHighLowInGraph(int *high, int *low, bool addFuzz) {
                *high = (int)(*high * .88);
                *low  = (int)(*low  * .88);
        }
                *high = (int)(*high * .88);
                *low  = (int)(*low  * .88);
        }

-}
\ No newline at end of file
+}
+
+// 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;
+       }
+       bool st = DetectST(grph, &size, &clock);
+       int start = 0;
+       if (st == false) {
+               start = DetectASKClock(grph, size, &clock, 20);
+       }
+       // Only print this message if we're not looping something
+       if (printAns){
+               PrintAndLog("Auto-detected clock rate: %d, Best Starting Position: %d", clock, start);
+       }
+       return clock;
+}
+
+uint8_t GetPskCarrier(const char str[], bool printAns, bool verbose)
+{
+       uint8_t carrier=0;
+       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 0;
+       }
+       //uint8_t countPSK_FC(uint8_t *BitStream, size_t size)
+
+       carrier = countFC(grph,size,0);
+       // Only print this message if we're not looping something
+       if (printAns){
+               PrintAndLog("Auto-detected PSK carrier rate: %d", carrier);
+       }
+       return carrier;
+}
+
+int GetPskClock(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;
+       }
+       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;
+}
+
+uint8_t GetNrzClock(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;
+       }
+       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;
+}
+//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 fc1=0, fc2=0, rf1=0;
+       uint8_t ans = fskClocks(&fc1, &fc2, &rf1, verbose);
+       if (ans == 0) 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;
+}
+uint8_t fskClocks(uint8_t *fc1, uint8_t *fc2, uint8_t *rf1, bool verbose)
+{
+       uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+       size_t size = getFromGraphBuf(BitStream);
+       if (size==0) return 0;
+       uint16_t ans = countFC(BitStream, size, 1); 
+       if (ans==0) {
+               if (verbose) PrintAndLog("DEBUG: No data found");
+               return 0;
+       }
+       *fc1 = (ans >> 8) & 0xFF;
+       *fc2 = ans & 0xFF;
+
+       *rf1 = detectFSKClk(BitStream, size, *fc1, *fc2);
+       if (*rf1==0) {
+               if (verbose) PrintAndLog("DEBUG: Clock detect error");
+               return 0;
+       }
+       return 1;
+}