hf topaz reader: add support for dynamic lock areas

[proxmark3-svn] / armsrc / BigBuf.c

diff --git a/armsrc/BigBuf.c b/armsrc/BigBuf.c
index 1b5e54823709771888848f1b59cb4b25a96f8a45..51fafdebc22b3b872a8a6b1cba3a9f34bfc2567e 100644 (file)
--- a/armsrc/BigBuf.c
+++ b/armsrc/BigBuf.c
@@ -171,15 +171,72 @@ bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_
        traceLen += iLen;
 
        // parity bytes
        traceLen += iLen;
 
        // parity bytes

-       if (parity != NULL && iLen != 0) {
-               memcpy(trace + traceLen, parity, num_paritybytes);
+       if (iLen != 0) {
+               if (parity != NULL) {
+                       memcpy(trace + traceLen, parity, num_paritybytes);
+               } else {
+                       memset(trace + traceLen, 0x00, num_paritybytes);
+               }

        }
        traceLen += 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;
 }
        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;
+       }
+}