ADD: "lf hid bruteforce" for a simple bruteforce attact against a HID reader. ...

[proxmark3-svn] / client / util.c

diff --git a/client/util.c b/client/util.c
index 29914667b23f6538ea92467be8d5011687ef4a2f..9d4c83ee2b975e997a6db42e1b3eb8c9e9061b48 100644 (file)
--- a/client/util.c
+++ b/client/util.c
@@ -21,14 +21,14 @@ int ukbhit(void)
   int error;
   static struct termios Otty, Ntty;
 
-  tcgetattr( 0, &Otty);
+  if ( tcgetattr( 0, &Otty) == -1) return -1;
   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);
@@ -137,10 +137,10 @@ 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
-       for (size_t out_index=0; out_index < max_len; out_index++) {
+       for (size_t out_index=0; out_index < max_len-2; out_index++) {
                // set character
                sprintf(tmp++, "%u", data[in_index]);
-               // check if a line break is needed
+               // 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++;
@@ -159,6 +159,8 @@ 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];
        memset(buf, 0x00, 1024);
+       char *tmp = buf;
+       sprintf(tmp, "%s| %s", sprint_hex(data, len) , data);   
        return buf;
 }
 void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
@@ -192,7 +194,6 @@ void num_to_bytebits(uint64_t       n, size_t len, uint8_t *dest) {
 // 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;
@@ -204,28 +205,15 @@ uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockS
        return tmp;
 }
 
-//assumes little endian
-char * printBits(size_t const size, void const * const ptr)
-{
-    unsigned char *b = (unsigned char*) ptr;   
-    unsigned char byte;
-       static char buf[1024];
-       char * tmp = buf;
-    int i, j;
-
-    for (i=size-1;i>=0;i--)
-    {
-        for (j=7;j>=0;j--)
-        {
-            byte = b[i] & (1<<j);
-            byte >>= j;
-            sprintf(tmp, "%u", byte);
-                       tmp++;
-        }
-    }
-       return buf;
+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
 //  -------------------------------------------------------------------------
@@ -344,13 +332,11 @@ int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
 {
        int bg, en, temp, i;
 
-       if (hexcnt % 2)
-               return 1;
+       if (hexcnt & 1) return 1;
        
        if (param_getptr(line, &bg, &en, paramnum)) return 1;
 
-       if (en - bg + 1 != hexcnt) 
-               return 1;
+       if (en - bg + 1 != hexcnt) return 1;
 
        for(i = 0; i < hexcnt; i += 2) {
                if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) )   return 1;
@@ -477,11 +463,9 @@ void binarraytobinstring(char *target, char *source,  int length)
 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;
-
     return x ^ type;
 }
 
@@ -517,7 +501,8 @@ uint32_t PackBits(uint8_t start, uint8_t len, uint8_t* bits) {
        return tmp;
 }
 
-// RotateLeft - Ultralight, Desfire
+// 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++) {