FIX: 'iclass write'

[proxmark3-svn] / armsrc / BigBuf.c

diff --git a/armsrc/BigBuf.c b/armsrc/BigBuf.c
index 1b5e54823709771888848f1b59cb4b25a96f8a45..cf0c26b2b176c1dc8da7be8eab8fa19ab70520ed 100644 (file)
--- a/armsrc/BigBuf.c
+++ b/armsrc/BigBuf.c
@@ -8,18 +8,21 @@
 //-----------------------------------------------------------------------------
 // BigBuf and functions to allocate/free parts of it.
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 // BigBuf and functions to allocate/free parts of it.
 //-----------------------------------------------------------------------------

-
-#include <stdint.h>
-#include "proxmark3.h"
-#include "apps.h"
-#include "string.h"
+#include "BigBuf.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.
 
 // 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.

-

 // declare it as uint32_t to achieve alignment to 4 Byte boundary
 static uint32_t BigBuf[BIGBUF_SIZE/sizeof(uint32_t)];
 
 // declare it as uint32_t to achieve alignment to 4 Byte boundary
 static uint32_t BigBuf[BIGBUF_SIZE/sizeof(uint32_t)];
 

+/* BigBuf memory layout:
+Pointer to highest available memory: BigBuf_hi
+
+    high BIGBUF_SIZE
+    reserved = BigBuf_malloc()  subtracts amount from BigBuf_hi,   
+       low  0x00
+*/
+

 // High memory mark
 static uint16_t BigBuf_hi = BIGBUF_SIZE;
 
 // High memory mark
 static uint16_t BigBuf_hi = BIGBUF_SIZE;
 


@@ -36,25 +39,34 @@ uint8_t *BigBuf_get_addr(void)
        return (uint8_t *)BigBuf;
 }
 
        return (uint8_t *)BigBuf;
 }
 

-

 // get the address of the emulator memory. Allocate part of Bigbuf for it, if not yet done
 uint8_t *BigBuf_get_EM_addr(void)
 {
 // get the address of the emulator memory. Allocate part of Bigbuf for it, if not yet done
 uint8_t *BigBuf_get_EM_addr(void)
 {

-       if (emulator_memory == NULL) {          // not yet allocated
+       // not yet allocated
+       if (emulator_memory == NULL)

                emulator_memory = BigBuf_malloc(CARD_MEMORY_SIZE);
                emulator_memory = BigBuf_malloc(CARD_MEMORY_SIZE);

-       }

        
        return emulator_memory;
 }
 
        
        return emulator_memory;
 }
 

-

 // clear ALL of BigBuf
 void BigBuf_Clear(void)
 {
 // clear ALL of BigBuf
 void BigBuf_Clear(void)
 {

-       memset(BigBuf,0,BIGBUF_SIZE);
-       Dbprintf("Buffer cleared (%i bytes)",BIGBUF_SIZE);
+       BigBuf_Clear_ext(true);
+}
+
+// clear ALL of BigBuf
+void BigBuf_Clear_ext(bool verbose)
+{
+       memset(BigBuf, 0, 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
 
 // 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


@@ -69,25 +81,35 @@ uint8_t *BigBuf_malloc(uint16_t chunksize)
        }
 }
 
        }
 }
 

-

 // free ALL allocated chunks. The whole BigBuf is available for traces or samples again.
 void BigBuf_free(void)
 {
        BigBuf_hi = BIGBUF_SIZE;
        emulator_memory = NULL;
 // free ALL allocated chunks. The whole BigBuf is available for traces or samples again.
 void BigBuf_free(void)
 {
        BigBuf_hi = BIGBUF_SIZE;
        emulator_memory = NULL;

+       
+       // shouldn't this empty BigBuf also?

 }
 
 }
 

-

 // free allocated chunks EXCEPT the emulator memory
 void BigBuf_free_keep_EM(void)
 {
 // free allocated chunks EXCEPT the emulator memory
 void BigBuf_free_keep_EM(void)
 {

-       if (emulator_memory != NULL) {
+       if (emulator_memory != NULL)

                BigBuf_hi = emulator_memory - (uint8_t *)BigBuf;
                BigBuf_hi = emulator_memory - (uint8_t *)BigBuf;

-       } else {
+       else

                BigBuf_hi = BIGBUF_SIZE;
                BigBuf_hi = BIGBUF_SIZE;

-       }
+       
+       // shouldn't this empty BigBuf also?

 }
 
 }
 

+void BigBuf_print_status(void)
+{
+       Dbprintf("Memory");
+       Dbprintf("  BIGBUF_SIZE.............%d", BIGBUF_SIZE);
+       Dbprintf("  Available memory........%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)
 
 // return the maximum trace length (i.e. the unallocated size of BigBuf)
 uint16_t BigBuf_max_traceLen(void)


@@ -96,9 +118,6 @@ uint16_t BigBuf_max_traceLen(void)
 }
 
 void clear_trace() {
 }
 
 void clear_trace() {

-       uint8_t *trace = BigBuf_get_addr();
-       uint16_t max_traceLen = BigBuf_max_traceLen();
-       memset(trace, 0x44, max_traceLen);

        traceLen = 0;
 }
 
        traceLen = 0;
 }
 


@@ -120,7 +139,6 @@ uint16_t BigBuf_get_traceLen(void)
   The traces produced by calling this function can be fetched on the client-side
   by 'hf list raw', alternatively 'hf list <proto>' for protocol-specific
   annotation of commands/responses.
   The traces produced by calling this function can be fetched on the client-side
   by 'hf list raw', alternatively 'hf list <proto>' for protocol-specific
   annotation of commands/responses.

-

 **/
 bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_start, uint32_t timestamp_end, uint8_t *parity, bool readerToTag)
 {
 **/
 bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_start, uint32_t timestamp_end, uint8_t *parity, bool readerToTag)
 {


@@ -132,9 +150,7 @@ bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_
        uint16_t duration = timestamp_end - timestamp_start;
 
        // Return when trace is full
        uint16_t duration = timestamp_end - timestamp_start;
 
        // Return when trace is full

-       uint16_t max_traceLen = BigBuf_max_traceLen();
-
-       if (traceLen + sizeof(iLen) + sizeof(timestamp_start) + sizeof(duration) + num_paritybytes + iLen >= max_traceLen) {
+       if (traceLen + sizeof(iLen) + sizeof(timestamp_start) + sizeof(duration) + num_paritybytes + iLen >= BigBuf_max_traceLen()) {

                tracing = FALSE;        // don't trace any more
                return FALSE;
        }
                tracing = FALSE;        // don't trace any more
                return FALSE;
        }


@@ -171,15 +187,70 @@ 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 (num_paritybytes != 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;
+       }
+}