add first attempt at lf miller decoding

[proxmark3-svn] / client / util.c

diff --git a/client/util.c b/client/util.c
index c4f7d200f61bb096949c2e5939c9c48349da7431..e80f5cc9d59efeb7fe1cabee909db4bcb49ed1d5 100644 (file)
--- a/client/util.c
+++ b/client/util.c
@@ -8,6 +8,7 @@
 // utilities
 //-----------------------------------------------------------------------------
 
 // utilities
 //-----------------------------------------------------------------------------
 

+#include <ctype.h>

 #include "util.h"
 #define MAX_BIN_BREAK_LENGTH   (3072+384+1)
 
 #include "util.h"
 #define MAX_BIN_BREAK_LENGTH   (3072+384+1)
 


@@ -23,7 +24,7 @@ int ukbhit(void)
   static struct termios Otty, Ntty;
 
 
   static struct termios Otty, Ntty;
 
 

-  tcgetattr( 0, &Otty);
+  if ( tcgetattr( 0, &Otty) == -1 ) return -1;

   Ntty = Otty;
 
   Ntty.c_iflag          = 0;       /* input mode                */
   Ntty = Otty;
 
   Ntty.c_iflag          = 0;       /* input mode                */


@@ -94,7 +95,7 @@ void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount)
        memset(fileName, 0x00, 200);
        
        for (int j = 0; j < byteCount; j++, fnameptr += 2)
        memset(fileName, 0x00, 200);
        
        for (int j = 0; j < byteCount; j++, fnameptr += 2)

-               sprintf(fnameptr, "%02x", uid[j]); 
+               sprintf(fnameptr, "%02x", (unsigned int) uid[j]); 

        sprintf(fnameptr, "%s", ext); 
 }
 
        sprintf(fnameptr, "%s", ext); 
 }
 


@@ -110,6 +111,23 @@ void print_hex(const uint8_t * data, const size_t len)
        printf("\n");
 }
 
        printf("\n");
 }
 

+void print_hex_break(const uint8_t *data, const size_t len, uint8_t breaks) {
+
+       int rownum = 0;
+       printf("[%02d] | ", rownum);
+       for (int i = 0; i < len; ++i) {
+
+               printf("%02X ", data[i]);
+               
+               // check if a line break is needed
+               if ( breaks > 0 && !((i+1) % breaks) && (i+1 < len) ) {
+                       ++rownum;
+                       printf("\n[%02d] | ", rownum);
+               }
+       }
+       printf("\n");
+}
+

 char *sprint_hex(const uint8_t *data, const size_t len) {
        
        int maxLen = ( len > 1024/3) ? 1024/3 : len;
 char *sprint_hex(const uint8_t *data, const size_t len) {
        
        int maxLen = ( len > 1024/3) ? 1024/3 : len;


@@ -119,7 +137,7 @@ char *sprint_hex(const uint8_t *data, const size_t len) {
        size_t i;
 
        for (i=0; i < maxLen; ++i, tmp += 3)
        size_t i;
 
        for (i=0; i < maxLen; ++i, tmp += 3)

-               sprintf(tmp, "%02x ", data[i]);
+               sprintf(tmp, "%02x ", (unsigned int) data[i]);

 
        return buf;
 }
 
        return buf;
 }


@@ -139,9 +157,10 @@ char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t brea
 
        size_t in_index = 0;
        // loop through the out_index to make sure we don't go too far
 
        size_t in_index = 0;
        // loop through the out_index to make sure we don't go too far

-       for (size_t out_index=0; out_index < max_len; out_index++) {
-               // set character
-               sprintf(tmp++, "%u", data[in_index]);
+       for (size_t out_index=0; out_index < max_len-1; out_index++) {
+               // set character - (should be binary but verify it isn't more than 1 digit)
+               if (data[in_index]<10)
+                       sprintf(tmp++, "%u", (unsigned int) data[in_index]);

                // check if a line break is needed and we have room to print it in our array
                if ( (breaks > 0) && !((in_index+1) % breaks) && (out_index+1 != max_len) ) {
                        // increment and print line break
                // check if a line break is needed and we have room to print it in our array
                if ( (breaks > 0) && !((in_index+1) % breaks) && (out_index+1 != max_len) ) {
                        // increment and print line break


@@ -157,6 +176,41 @@ char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t brea
 char *sprint_bin(const uint8_t *data, const size_t len) {
        return sprint_bin_break(data, len, 0);
 }
 char *sprint_bin(const uint8_t *data, const size_t len) {
        return sprint_bin_break(data, len, 0);
 }

+
+char *sprint_hex_ascii(const uint8_t *data, const size_t len) {
+       static char buf[1024];
+       char *tmp = buf;
+       memset(buf, 0x00, 1024);
+       size_t max_len = (len > 1010) ? 1010 : len;
+
+       sprintf(tmp, "%s| ", sprint_hex(data, max_len) );
+       
+       size_t i = 0;
+       size_t pos = (max_len * 3)+2;
+       while(i < max_len){
+               char c = data[i];
+               if ( (c < 32) || (c == 127))
+                       c = '.';
+               sprintf(tmp+pos+i, "%c",  c);
+               ++i;
+       }
+       return buf;
+}
+
+char *sprint_ascii(const uint8_t *data, const size_t len) {
+       static char buf[1024];
+       char *tmp = buf;
+       memset(buf, 0x00, 1024);
+       size_t max_len = (len > 1010) ? 1010 : len;
+       size_t i = 0;
+       while(i < max_len){
+               char c = data[i];
+               tmp[i] = ((c < 32) || (c == 127)) ? '.' : c;
+               ++i;
+       }
+       return buf;
+}
+

 void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
 {
        while (len--) {
 void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
 {
        while (len--) {


@@ -183,6 +237,15 @@ void num_to_bytebits(uint64_t      n, size_t len, uint8_t *dest) {
        }
 }
 
        }
 }
 

+//least significant bit first
+void num_to_bytebitsLSBF(uint64_t n, size_t len, uint8_t *dest) {
+       for(int i = 0 ; i < len ; ++i) {
+               dest[i] =  n & 1;
+               n >>= 1;
+       }
+}
+
+

 // aa,bb,cc,dd,ee,ff,gg,hh, ii,jj,kk,ll,mm,nn,oo,pp
 // to
 // hh,gg,ff,ee,dd,cc,bb,aa, pp,oo,nn,mm,ll,kk,jj,ii
 // aa,bb,cc,dd,ee,ff,gg,hh, ii,jj,kk,ll,mm,nn,oo,pp
 // to
 // hh,gg,ff,ee,dd,cc,bb,aa, pp,oo,nn,mm,ll,kk,jj,ii


@@ -199,6 +262,16 @@ uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockS
        return tmp;
 }
 
        return tmp;
 }
 

+// takes a uint8_t src array, for len items and reverses the byte order in blocksizes (8,16,32,64), 
+// returns: the dest array contains the reordered src array.
+void SwapEndian64ex(const uint8_t *src, const size_t len, const uint8_t blockSize, uint8_t *dest){
+       for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){
+               for (size_t i = 0; i < blockSize; i++){
+                       dest[i+(blockSize*block)] = src[(blockSize-1-i)+(blockSize*block)];
+               }
+       }
+}
+

 //assumes little endian
 char * printBits(size_t const size, void const * const ptr)
 {
 //assumes little endian
 char * printBits(size_t const size, void const * const ptr)
 {


@@ -214,7 +287,7 @@ char * printBits(size_t const size, void const * const ptr)
         {
             byte = b[i] & (1<<j);
             byte >>= j;
         {
             byte = b[i] & (1<<j);
             byte >>= j;

-            sprintf(tmp, "%u", byte);
+            sprintf(tmp, "%u", (unsigned int)byte);

                        tmp++;
         }
     }
                        tmp++;
         }
     }


@@ -331,8 +404,6 @@ uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base)
                return strtoull(&line[bg], NULL, base);
        else
                return deflt;
                return strtoull(&line[bg], NULL, base);
        else
                return deflt;

-
-       return 0;

 }
 
 int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
 }
 
 int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)


@@ -450,7 +521,7 @@ int binarraytohex(char *target,char *source, int length)
     {
         for(i= x= 0 ; i < 4 ; ++i)
             x +=  ( source[i] << (3 - i));
     {
         for(i= x= 0 ; i < 4 ; ++i)
             x +=  ( source[i] << (3 - i));

-        sprintf(target,"%X", x);
+        sprintf(target,"%X", (unsigned int)x);

         ++target;
         source += 4;
         j -= 4;
         ++target;
         source += 4;
         j -= 4;


@@ -489,6 +560,7 @@ void wiegand_add_parity(uint8_t *target, uint8_t *source, uint8_t length)
     *(target)= GetParity(source + length / 2, ODD, length / 2);
 }
 
     *(target)= GetParity(source + length / 2, ODD, length / 2);
 }
 

+// xor two arrays together for len items.  The dst array contains the new xored values.

 void xor(unsigned char *dst, unsigned char *src, size_t len) {
    for( ; len > 0; len--,dst++,src++)
        *dst ^= *src;
 void xor(unsigned char *dst, unsigned char *src, size_t len) {
    for( ; len > 0; len--,dst++,src++)
        *dst ^= *src;


@@ -497,6 +569,9 @@ void xor(unsigned char *dst, unsigned char *src, size_t len) {
 int32_t le24toh (uint8_t data[3]) {
     return (data[2] << 16) | (data[1] << 8) | data[0];
 }
 int32_t le24toh (uint8_t data[3]) {
     return (data[2] << 16) | (data[1] << 8) | data[0];
 }

+uint32_t le32toh (uint8_t *data) {
+       return (uint32_t)( (data[3]<<24) | (data[2]<<16) | (data[1]<<8) | data[0]);
+}

 
 // RotateLeft - Ultralight, Desfire, works on byte level
 // 00-01-02  >> 01-02-00
 
 // RotateLeft - Ultralight, Desfire, works on byte level
 // 00-01-02  >> 01-02-00


@@ -507,3 +582,12 @@ void rol(uint8_t *data, const size_t len){
     }
     data[len-1] = first;
 }
     }
     data[len-1] = first;
 }

+
+
+// Replace unprintable characters with a dot in char buffer
+void clean_ascii(unsigned char *buf, size_t len) {
+  for (size_t i = 0; i < len; i++) {
+    if (!isprint(buf[i]))
+      buf[i] = '.';
+  }
+}