X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/f50d457fa853bc7228635913584201efec5924aa..217cfb6b29773989774cbe573af0372df09f056b:/client/graph.c

diff --git a/client/graph.c b/client/graph.c
index 95050f55..3ea47d2d 100644
--- a/client/graph.c
+++ b/client/graph.c
@@ -14,20 +14,23 @@
 #include "ui.h"
 #include "graph.h"
 #include "lfdemod.h"
+#include "cmddata.h" //for g_debugmode
 
 int GraphBuffer[MAX_GRAPH_TRACE_LEN];
 int GraphTraceLen;
 
-/* write a bit to the graph */
+int s_Buff[MAX_GRAPH_TRACE_LEN];
+
+/* write a manchester bit to the graph */
 void AppendGraph(int redraw, int clock, int bit)
 {
   int i;
-
+  //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 ^ 1;
-
+    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;
+    GraphBuffer[GraphTraceLen++] = bit ^ 1;
 
   if (redraw)
     RepaintGraphWindow();
@@ -46,6 +49,27 @@ int ClearGraph(int redraw)
 
   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=0;
+	static bool GB_Saved = false;
+	static int SavedGridOffsetAdj=0;
+
+	if (saveOpt == GRAPH_SAVE) { //save
+		memcpy(SavedGB, GraphBuffer, sizeof(GraphBuffer));
+		SavedGBlen = GraphTraceLen;
+		GB_Saved=true;
+		SavedGridOffsetAdj = GridOffset;
+	} else if (GB_Saved) { //restore
+		memcpy(GraphBuffer, SavedGB, sizeof(GraphBuffer));
+		GraphTraceLen = SavedGBlen;
+		GridOffset = SavedGridOffsetAdj;
+		RepaintGraphWindow();
+	}
+	return;
+}
 
 // DETECT CLOCK NOW IN LFDEMOD.C
 
@@ -56,52 +80,24 @@ void setGraphBuf(uint8_t *buff, size_t size)
 	uint16_t i = 0;  
 	if ( size > MAX_GRAPH_TRACE_LEN )
 		size = MAX_GRAPH_TRACE_LEN;
-  ClearGraph(0);
-  for (; i < size; ++i){
+	ClearGraph(0);
+	for (; i < size; ++i){
 		GraphBuffer[i]=buff[i]-128;
-  }
-  GraphTraceLen=size;
-  RepaintGraphWindow();
-  return;
+	}
+	GraphTraceLen=size;
+	RepaintGraphWindow();
+	return;
 }
 size_t getFromGraphBuf(uint8_t *buff)
 {
-	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;
-}
-
-
-// Get or auto-detect clock rate
-int GetClock(const char *str, int peak, 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]={0};
-		size_t 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);
-		}
+	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 clock;
+	return i;
 }
 
 // A simple test to see if there is any data inside Graphbuffer. 
@@ -136,27 +132,167 @@ void DetectHighLowInGraph(int *high, int *low, bool addFuzz) {
 	}
 }
 
-int GetNRZpskClock(const char *str, int peak, int verbose)
+// 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
-	if (!clock)
-	{
-		uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
-		size_t size = getFromGraphBuf(grph);
-		if ( size == 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 -1;
-		}
-		clock = DetectpskNRZClock(grph,size,0);
-		// Only print this message if we're not looping something
-		if (!verbose){
-			PrintAndLog("Auto-detected clock rate: %d", clock);
-		}
+		return -1;
+	}
+	//, size_t *ststart, size_t *stend
+	size_t ststart = 0, stend = 0;
+	bool st = DetectST(grph, &size, &clock, &ststart, &stend);
+	int start = stend;
+	if (st == false) {
+		start = DetectASKClock(grph, size, &clock, 20);
+	}
+	setClockGrid(clock, start);
+	// Only print this message if we're not looping something
+	if (printAns || g_debugMode) {
+		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;
+	}
+	uint16_t fc = countFC(grph,size,0);
+	carrier = fc & 0xFF;
+	if (carrier != 2 && carrier != 4 && carrier != 8) return 0;
+	if ((fc>>8) == 10 && carrier == 8) return 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;
+	}
+	size_t firstPhaseShiftLoc = 0;
+	uint8_t curPhase = 0, fc = 0;
+	clock = DetectPSKClock(grph, size, 0, &firstPhaseShiftLoc, &curPhase, &fc);
+	setClockGrid(clock, firstPhaseShiftLoc);
+	// 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;
+	}
+	size_t clkStartIdx = 0;
+	clock = DetectNRZClock(grph, size, 0, &clkStartIdx);
+	setClockGrid(clock, clkStartIdx);
+	// 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;
+	int firstClockEdge = 0;
+	uint8_t ans = fskClocks(&fc1, &fc2, &rf1, verbose, &firstClockEdge);
+	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);
+		setClockGrid(rf1, firstClockEdge);
+		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, int *firstClockEdge)
+{
+	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 || g_debugMode) PrintAndLog("DEBUG: No data found");
+		return 0;
+	}
+	*fc1 = (ans >> 8) & 0xFF;
+	*fc2 = ans & 0xFF;
+	//int firstClockEdge = 0;
+	*rf1 = detectFSKClk(BitStream, size, *fc1, *fc2, firstClockEdge);
+	if (*rf1==0) {
+		if (verbose || g_debugMode) PrintAndLog("DEBUG: Clock detect error");
+		return 0;
+	}
+	return 1;
+}
+bool graphJustNoise(int *BitStream, int size)
+{
+	static const uint8_t THRESHOLD = 15; //might not be high enough for noisy environments
+	//test samples are not just noise
+	bool justNoise1 = 1;
+	for(int idx=0; idx < size && justNoise1 ;idx++){
+		justNoise1 = BitStream[idx] < THRESHOLD;
+	}
+	return justNoise1;
+}