X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/bf32dd923f3fbbfaa0932390fb1a771d03d0cf45..6bb7609cadc5868663fea41064779b767c6e382f:/client/util.c

diff --git a/client/util.c b/client/util.c
index 057be9ed..fcda9bde 100644
--- 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);
@@ -124,7 +124,12 @@ char *sprint_hex(const uint8_t *data, const size_t len) {
 
 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 = ( len+(len/breaks) > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len+(len/breaks);
+	int max_len;
+	if (breaks==0)
+		max_len = ( len > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len;
+	else
+		max_len = ( len+(len/breaks) > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len+(len/breaks);
+
 	static char buf[MAX_BIN_BREAK_LENGTH]; // 3072 + end of line characters if broken at 8 bits
 	//clear memory
 	memset(buf, 0x00, sizeof(buf));
@@ -132,10 +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++;
@@ -150,6 +155,14 @@ char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t brea
 char *sprint_bin(const uint8_t *data, const size_t len) {
 	return sprint_bin_break(data, len, 0);
 }
+
+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)
 {
 	while (len--) {
@@ -181,7 +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;
@@ -193,28 +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
 //  -------------------------------------------------------------------------
@@ -333,13 +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;
@@ -466,11 +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;
 }
 
@@ -506,11 +501,20 @@ 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