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);
}
// 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) {
+ 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");
}
}
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
- 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
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
- 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
- sprintf(tmp++, "%u", data[in_index]);
- // check if a line break is needed
+ 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");
- }
+ }
in_index++;
}
-
+ // last char.
+ sprintf(tmp++, "%u", (unsigned int) data[in_index]);
return buf;
}
char *sprint_hex_ascii(const uint8_t *data, const size_t len) {
static char buf[1024];
+ char *tmp = buf;
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)
{
while (len--) {
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;
}
}
+//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){
- //static uint8_t buf[64];
uint8_t buf[64];
memset(buf, 0x00, 64);
uint8_t *tmp = buf;
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;
+// 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)];
+ }
+ }
}
// -------------------------------------------------------------------------
{
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;
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;
}
*(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;
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;
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;
+}
+
+// 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
projects / proxmark3-svn / blobdiff