CHG: updated helptext for lf t55xx bruteforce

[proxmark3-svn] / client / util.c

diff --git a/client/util.c b/client/util.c
index 9f2142c6a4114d7c2e6f50f6ac97fca70c709522..860193e7b0cbfe79d509c270ad62115c3edda055 100644 (file)
--- a/client/util.c
+++ b/client/util.c
@@ -20,7 +20,6 @@ int ukbhit(void)
   int error;
   static struct termios Otty, Ntty;
 
-
   tcgetattr( 0, &Otty);
   Ntty = Otty;
 
@@ -113,11 +112,11 @@ char *sprint_hex(const uint8_t *data, const size_t len) {
        int maxLen = ( len > 1024/3) ? 1024/3 : len;
        static char buf[1024];
        memset(buf, 0x00, 1024);
-       char *tmp = buf;
+       char * tmp = buf;
        size_t i;
 
        for (i=0; i < maxLen; ++i, tmp += 3)
-               sprintf(tmp, "%02x ", data[i]);
+               sprintf(tmp, "%02X ", data[i]);
 
        return buf;
 }
@@ -160,6 +159,13 @@ uint64_t bytes_to_num(uint8_t* src, size_t len)
        return num;
 }
 
+void num_to_bytebits(uint64_t  n, size_t len, uint8_t *dest) {
+       while (len--) {
+               dest[len] = 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
@@ -248,7 +254,7 @@ char param_getchar(const char *line, int paramnum)
 
 uint8_t param_get8(const char *line, int paramnum)
 {
-       return param_get8ex(line, paramnum, 10, 0);
+       return param_get8ex(line, paramnum, 0, 10);
 }
 
 /**
@@ -333,7 +339,28 @@ int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
 
        return 0;
 }
+int param_gethex_ex(const char *line, int paramnum, uint8_t * data, int *hexcnt)
+{
+       int bg, en, temp, i;
+
+       //if (hexcnt % 2)
+       //      return 1;
+       
+       if (param_getptr(line, &bg, &en, paramnum)) return 1;
+
+       *hexcnt = en - bg + 1;
+       if (*hexcnt % 2) //error if not complete hex bytes
+               return 1;
+
+       for(i = 0; i < *hexcnt; i += 2) {
+               if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) ) return 1;
+               
+               sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
+               data[i / 2] = temp & 0xff;
+       }       
 
+       return 0;
+}
 int param_getstr(const char *line, int paramnum, char * str)
 {
        int bg, en;
@@ -394,7 +421,7 @@ int hextobinstring(char *target, char *source)
 
 // convert binary array of 0x00/0x01 values to hex (safe to do in place as target will always be shorter than source)
 // return number of bits converted
-int binarraytohex(char *target,char *source, int length)
+int binarraytohex(char *target, char *source, int length)
 {
     unsigned char i, x;
     int j = length;
@@ -425,7 +452,7 @@ void binarraytobinstring(char *target, char *source,  int length)
 }
 
 // return parity bit required to match type
-uint8_t GetParity( char *bits, uint8_t type, int length)
+uint8_t GetParity( uint8_t *bits, uint8_t type, int length)
 {
     int x;
 
@@ -437,7 +464,7 @@ uint8_t GetParity( char *bits, uint8_t type, int length)
 }
 
 // add HID parity to binary array: EVEN prefix for 1st half of ID, ODD suffix for 2nd half
-void wiegand_add_parity(char *target, char *source, char length)
+void wiegand_add_parity(uint8_t *target, uint8_t *source, uint8_t length)
 {
     *(target++)= GetParity(source, EVEN, length / 2);
     memcpy(target, source, length);
@@ -445,7 +472,7 @@ void wiegand_add_parity(char *target, char *source, char length)
     *(target)= GetParity(source + length / 2, ODD, length / 2);
 }
 
-void xor(unsigned char *dst, unsigned char *src, size_t len) {
+void xor(unsigned char * dst, unsigned char * src, size_t len) {
    for( ; len > 0; len--,dst++,src++)
        *dst ^= *src;
 }
@@ -453,3 +480,26 @@ 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];
 }
+
+uint32_t PackBits(uint8_t start, uint8_t len, uint8_t* bits) {
+
+       if (len > 32) return 0;
+       
+       int i = start;
+       int j = len-1;
+       uint32_t tmp = 0;
+
+       for (; j >= 0; --j, ++i)
+               tmp     |= bits[i] << j;
+
+       return tmp;
+}
+
+// RotateLeft - Ultralight, Desfire
+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;
+}
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