CHG: -O4 changed into -O3 to remove some compiler warnings clang, on mac ..

[proxmark3-svn] / client / util.c

diff --git a/client/util.c b/client/util.c
index de1cbe94571a18cc0cbe0d8e534f083a76d6f54e..04daffc2e1249d8f9835ae0268e402d7e9d96023 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);
@@ -97,14 +97,22 @@ void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount)
 }
 
 // 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;
-
-       for (i=0; i < len; i++)
+       for (i=0; i < len; ++i)
                printf("%02x ", data[i]);
+       printf("\n");
+}
+void print_hex_break(const uint8_t *data, const size_t len, uint8_t breaks) {
+       size_t i;
+       for ( i = 0; i < len; ++i) {
 
+               printf("%02X ", data[i]);
+               
+               // check if a line break is needed
+               if ( (breaks > 0) && (i > 0) && !(i % breaks) )
+                       printf("(%d %d)\n", i , breaks);
+       }
        printf("\n");
 }
 
@@ -137,10 +145,10 @@ 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++;
@@ -158,9 +166,10 @@ 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);   
+       memset(buf, 0x00, 1024);
+       size_t max_len = (len > 1010) ? 1010 : len;
+       sprintf(tmp, "%s| %s", sprint_hex(data, max_len) , data);       
        return buf;
 }
 void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
@@ -194,8 +203,7 @@ 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];
+       uint8_t buf[64];
        memset(buf, 0x00, 64);
        uint8_t *tmp = buf;
        for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){
@@ -206,6 +214,15 @@ uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockS
        return tmp;
 }
 
+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
 //  -------------------------------------------------------------------------
@@ -455,11 +472,9 @@ 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;
 }
 
@@ -495,11 +510,20 @@ uint32_t PackBits(uint8_t start, uint8_t len, uint8_t* bits) {
        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;
+}
+
+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