minor adjustements, found some comments.

[proxmark3-svn] / client / util.c

diff --git a/client/util.c b/client/util.c
index 159929b5858234b3fc61d24308dcb430d8ab9212..9768dbeb088bb538a1c3d21408d61f4a823732c7 100644 (file)
--- a/client/util.c
+++ b/client/util.c
@@ -21,14 +21,14 @@ int ukbhit(void)
   int error;
   static struct termios Otty, Ntty;
 
   int error;
   static struct termios Otty, Ntty;
 

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

   Ntty = Otty;
 
   Ntty = Otty;
 

-  Ntty.c_iflag          = 0;       /* input mode                */
-  Ntty.c_oflag          = 0;       /* output mode               */
-  Ntty.c_lflag         &= ~ICANON; /* raw mode */
-  Ntty.c_cc[VMIN]       = CMIN;    /* minimum time to wait      */
-  Ntty.c_cc[VTIME]      = CTIME;   /* minimum characters to wait for */
+  Ntty.c_iflag         = 0;       /* input mode                */
+  Ntty.c_oflag         = 0;       /* output mode               */
+  Ntty.c_lflag         &= ~ICANON; /* raw mode */
+  Ntty.c_cc[VMIN]      = CMIN;    /* minimum time to wait      */
+  Ntty.c_cc[VTIME]     = CTIME;   /* minimum characters to wait for */

 
   if (0 == (error = tcsetattr(0, TCSANOW, &Ntty))) {
     error += ioctl(0, FIONREAD, &cnt);
 
   if (0 == (error = tcsetattr(0, TCSANOW, &Ntty))) {
     error += ioctl(0, FIONREAD, &cnt);


@@ -97,14 +97,27 @@ void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount)
 }
 
 // printing and converting functions
 }
 
 // printing and converting functions

-
-void print_hex(const uint8_t * data, const size_t len)
-{
+void print_hex(const uint8_t * data, const size_t len) {

        size_t i;
        size_t i;

-
-       for (i=0; i < len; i++)
+       for (i=0; i < len; ++i)

                printf("%02x ", data[i]);
                printf("%02x ", data[i]);

+       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");
 }
 
        printf("\n");
 }
 


@@ -123,8 +136,10 @@ char *sprint_hex(const uint8_t *data, const size_t len) {
 }
 
 char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks) {
 }
 
 char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks) {

+       

        // make sure we don't go beyond our char array memory
        // make sure we don't go beyond our char array memory

-       int max_len;
+       size_t in_index = 0, out_index = 0;
+       int max_len;    

        if (breaks==0)
                max_len = ( len > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len;
        else
        if (breaks==0)
                max_len = ( len > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len;
        else


@@ -135,20 +150,20 @@ char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t brea
        memset(buf, 0x00, sizeof(buf));
        char *tmp = buf;
 
        memset(buf, 0x00, sizeof(buf));
        char *tmp = buf;
 

-       size_t in_index = 0;

        // loop through the out_index to make sure we don't go too far
        // 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++) {
+       for (out_index=0; out_index < max_len-2; out_index++) {

                // set character
                // set character

-               sprintf(tmp++, "%u", data[in_index]);
+               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
                        out_index++;
                        sprintf(tmp++, "%s","\n");
                // 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
                        out_index++;
                        sprintf(tmp++, "%s","\n");

-       }
+               }

                in_index++;
        }
                in_index++;
        }

-
+       // last char.
+       sprintf(tmp++, "%u", (unsigned int) data[in_index]);

        return buf;
 }
 
        return buf;
 }
 


@@ -158,11 +173,13 @@ char *sprint_bin(const uint8_t *data, const size_t len) {
 
 char *sprint_hex_ascii(const uint8_t *data, const size_t len) {
        static char buf[1024];
 
 char *sprint_hex_ascii(const uint8_t *data, const size_t len) {
        static char buf[1024];

-       memset(buf, 0x00, 1024);

        char *tmp = buf;
        char *tmp = buf;

-       sprintf(tmp, "%s| %s", sprint_hex(data, len) , data);   
+       memset(buf, 0x00, 1024);
+       size_t max_len = (len > 1010) ? 1010 : len;
+       sprintf(tmp, "%s| %s", sprint_hex(data, max_len) , data);       

        return buf;
 }
        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--) {


@@ -182,19 +199,29 @@ uint64_t bytes_to_num(uint8_t* src, size_t len)
        return num;
 }
 
        return num;
 }
 

-void num_to_bytebits(uint64_t  n, size_t len, uint8_t *dest) {
+// takes a number (uint64_t) and creates a binarray in dest.
+void num_to_bytebits(uint64_t n, size_t len, uint8_t *dest) {

        while (len--) {
                dest[len] = n & 1;
                n >>= 1;
        }
 }
        while (len--) {
                dest[len] = n & 1;
                n >>= 1;
        }
 }

+//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
 // up to 64 bytes or 512 bits
 uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockSize){
 
 // 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
 // up to 64 bytes or 512 bits
 uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockSize){

-       static uint8_t buf[64];
+       uint8_t buf[64];

        memset(buf, 0x00, 64);
        uint8_t *tmp = buf;
        for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){
        memset(buf, 0x00, 64);
        uint8_t *tmp = buf;
        for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){


@@ -205,6 +232,16 @@ 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)];
+               }
+       }
+}
+

 //  -------------------------------------------------------------------------
 //  string parameters lib
 //  -------------------------------------------------------------------------
 //  -------------------------------------------------------------------------
 //  string parameters lib
 //  -------------------------------------------------------------------------


@@ -454,11 +491,9 @@ void binarraytobinstring(char *target, char *source,  int length)
 uint8_t GetParity( uint8_t *bits, uint8_t type, int length)
 {
     int x;
 uint8_t GetParity( uint8_t *bits, uint8_t type, int length)
 {
     int x;

-
-    for(x= 0 ; length > 0 ; --length)
+    for( x = 0 ; length > 0 ; --length)

         x += bits[length - 1];
     x %= 2;
         x += bits[length - 1];
     x %= 2;

-

     return x ^ type;
 }
 
     return x ^ type;
 }
 


@@ -471,6 +506,7 @@ 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;


@@ -480,6 +516,7 @@ int32_t le24toh (uint8_t data[3]) {
     return (data[2] << 16) | (data[1] << 8) | data[0];
 }
 
     return (data[2] << 16) | (data[1] << 8) | data[0];
 }
 

+// Pack a bitarray into a uint32_t.  

 uint32_t PackBits(uint8_t start, uint8_t len, uint8_t* bits) {
 
        if (len > 32) return 0;
 uint32_t PackBits(uint8_t start, uint8_t len, uint8_t* bits) {
 
        if (len > 32) return 0;


@@ -494,11 +531,21 @@ uint32_t PackBits(uint8_t start, uint8_t len, uint8_t* bits) {
        return tmp;
 }
 
        return tmp;
 }
 

-// RotateLeft - Ultralight, Desfire
-void rol(uint8_t *data, const size_t len){
+// RotateLeft - Ultralight, Desfire, works on byte level
+// 00-01-02  >> 01-02-00
+void rol(uint8_t *data, const size_t len){     

     uint8_t first = data[0];
     for (size_t i = 0; i < len-1; i++) {
         data[i] = data[i+1];
     }
     data[len-1] = first;
     uint8_t first = data[0];
     for (size_t i = 0; i < len-1; i++) {
         data[i] = data[i+1];
     }
     data[len-1] = first;

+}
+
+// Swap bit order on a uint32_t value.  Can be limited by nrbits just use say 8bits reversal
+uint32_t SwapBits(uint32_t value, int nrbits) {
+       uint32_t newvalue = 0;
+       for(int i = 0; i < nrbits; i++) {
+               newvalue ^= ((value >> i) & 1) << (nrbits - 1 - i);
+       }
+       return newvalue;

 }
\ No newline at end of file
 }
\ No newline at end of file