X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/3000dc4e7e72dd8661d174f7bcde511ff73eb99f..refs/pull/266/head:/armsrc/BigBuf.c?ds=inline

diff --git a/armsrc/BigBuf.c b/armsrc/BigBuf.c
index 1b5e5482..a5fcea7d 100644
--- a/armsrc/BigBuf.c
+++ b/armsrc/BigBuf.c
@@ -13,6 +13,7 @@
 #include "proxmark3.h"
 #include "apps.h"
 #include "string.h"
+#include "util.h"
 
 // BigBuf is the large multi-purpose buffer, typically used to hold A/D samples or traces.
 // Also used to hold various smaller buffers and the Mifare Emulator Memory.
@@ -50,11 +51,21 @@ uint8_t *BigBuf_get_EM_addr(void)
 
 // clear ALL of BigBuf
 void BigBuf_Clear(void)
+{
+	BigBuf_Clear_ext(true);
+}
+// clear ALL of BigBuf
+void BigBuf_Clear_ext(bool verbose)
 {
 	memset(BigBuf,0,BIGBUF_SIZE);
-	Dbprintf("Buffer cleared (%i bytes)",BIGBUF_SIZE);
+	if (verbose) 
+		Dbprintf("Buffer cleared (%i bytes)",BIGBUF_SIZE);
 }
 
+void BigBuf_Clear_keep_EM(void)
+{
+	memset(BigBuf,0,BigBuf_hi);
+}
 
 // allocate a chunk of memory from BigBuf. We allocate high memory first. The unallocated memory
 // at the beginning of BigBuf is always for traces/samples
@@ -88,6 +99,16 @@ void BigBuf_free_keep_EM(void)
 	}
 }
 
+void BigBuf_print_status(void)
+{
+	Dbprintf("Memory");
+	Dbprintf("  BIGBUF_SIZE.............%d", BIGBUF_SIZE);
+	Dbprintf("  BigBuf_hi  .............%d", BigBuf_hi);
+	Dbprintf("Tracing");
+	Dbprintf("  tracing ................%d", tracing);
+	Dbprintf("  traceLen ...............%d", traceLen);
+}
+
 
 // return the maximum trace length (i.e. the unallocated size of BigBuf)
 uint16_t BigBuf_max_traceLen(void)
@@ -96,9 +117,6 @@ uint16_t BigBuf_max_traceLen(void)
 }
 
 void clear_trace() {
-	uint8_t *trace = BigBuf_get_addr();
-	uint16_t max_traceLen = BigBuf_max_traceLen();
-	memset(trace, 0x44, max_traceLen);
 	traceLen = 0;
 }
 
@@ -171,15 +189,72 @@ bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_
 	traceLen += iLen;
 
 	// parity bytes
-	if (parity != NULL && iLen != 0) {
-		memcpy(trace + traceLen, parity, num_paritybytes);
+	if (num_paritybytes != 0) {
+		if (parity != NULL) {
+			memcpy(trace + traceLen, parity, num_paritybytes);
+		} else {
+			memset(trace + traceLen, 0x00, num_paritybytes);
+		}
 	}
 	traceLen += num_paritybytes;
 
-	if(traceLen +4 < max_traceLen)
-	{	//If it hadn't been cleared, for whatever reason..
-		memset(trace+traceLen,0x44, 4);
+	return TRUE;
+}
+
+
+int LogTraceHitag(const uint8_t * btBytes, int iBits, int iSamples, uint32_t dwParity, int readerToTag)
+{
+	/**
+	  Todo, rewrite the logger to use the generic functionality instead. It should be noted, however,
+	  that this logger takes number of bits as argument, not number of bytes.
+	  **/
+
+	if (!tracing) return FALSE;
+
+	uint8_t *trace = BigBuf_get_addr();
+	uint16_t iLen = nbytes(iBits);
+	// Return when trace is full
+	if (traceLen + sizeof(rsamples) + sizeof(dwParity) + sizeof(iBits) + iLen > BigBuf_max_traceLen()) return FALSE;
+
+	//Hitag traces appear to use this traceformat:
+	// 32 bits timestamp (little endian,Highest Bit used as readerToTag flag)
+	// 32 bits parity
+	// 8 bits size (number of bits in the trace entry, not number of bytes)
+	// y Bytes data
+
+	rsamples += iSamples;
+	trace[traceLen++] = ((rsamples >> 0) & 0xff);
+	trace[traceLen++] = ((rsamples >> 8) & 0xff);
+	trace[traceLen++] = ((rsamples >> 16) & 0xff);
+	trace[traceLen++] = ((rsamples >> 24) & 0xff);
+
+	if (!readerToTag) {
+		trace[traceLen - 1] |= 0x80;
 	}
 
+	trace[traceLen++] = ((dwParity >> 0) & 0xff);
+	trace[traceLen++] = ((dwParity >> 8) & 0xff);
+	trace[traceLen++] = ((dwParity >> 16) & 0xff);
+	trace[traceLen++] = ((dwParity >> 24) & 0xff);
+	trace[traceLen++] = iBits;
+
+	memcpy(trace + traceLen, btBytes, iLen);
+	traceLen += iLen;
+
 	return TRUE;
 }
+
+
+// Emulator memory
+uint8_t emlSet(uint8_t *data, uint32_t offset, uint32_t length){
+	uint8_t* mem = BigBuf_get_EM_addr();
+	if(offset+length < CARD_MEMORY_SIZE)
+	{
+		memcpy(mem+offset, data, length);
+		return 0;
+	}else
+	{
+		Dbprintf("Error, trying to set memory outside of bounds! %d  > %d", (offset+length), CARD_MEMORY_SIZE);
+		return 1;
+	}
+}