various bug fixes

[proxmark3-svn] / client / util.c

diff --git a/client/util.c b/client/util.c
index 709e2014911205631f689f1970f19594573d1930..0dd6905e7d7754750d84a2bff4634067f2b8623a 100644 (file)
--- a/client/util.c
+++ b/client/util.c
@@ -112,6 +112,7 @@ 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;
        size_t i;
 
@@ -125,6 +126,7 @@ char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t brea
        
        int maxLen = ( len > 1024) ? 1024 : len;
        static char buf[1024];
+       memset(buf, 0x00, 1024);
        char *tmp = buf;
 
        for (size_t i=0; i < maxLen; ++i){
@@ -158,6 +160,22 @@ uint64_t bytes_to_num(uint8_t* src, size_t len)
        return num;
 }
 
+// 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];
+       memset(buf, 0x00, 64);
+       uint8_t *tmp = buf;
+       for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){
+               for (size_t i = 0; i < blockSize; i++){
+                       tmp[i+(blockSize*block)] = src[(blockSize-1-i)+(blockSize*block)];
+               }
+       }
+       return tmp;
+}
+
 //assumes little endian
 char * printBits(size_t const size, void const * const ptr)
 {