X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/9984b1735acccec9503494c02fccdeefb2dafd86..3c4061697950f897e195dd77b6e471ca462dd3fb:/client/util.c

diff --git a/client/util.c b/client/util.c
index 860193e7..de6443cf 100644
--- a/client/util.c
+++ b/client/util.c
@@ -9,6 +9,7 @@
 //-----------------------------------------------------------------------------
 
 #include "util.h"
+#define MAX_BIN_BREAK_LENGTH   (3072+384+1)
 
 #ifndef _WIN32
 #include <termios.h>
@@ -122,17 +123,31 @@ 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) {
-	
-	int maxLen = ( len > 1020) ? 1020 : len;
-	static char buf[1024];
-	memset(buf, 0x00, 1024);
+	// make sure we don't go beyond our char array memory
+	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));
 	char *tmp = buf;
 
-	for (size_t i=0; i < maxLen; ++i){
-		sprintf(tmp++, "%u", data[i]);
-		if (breaks > 0 && !((i+1) % breaks))
+	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-2; out_index++) {
+		// set character
+		sprintf(tmp++, "%u", 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++;
+	}
 
 	return buf;
 }
@@ -140,6 +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--) {
@@ -171,7 +194,7 @@ 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];
 	memset(buf, 0x00, 64);
 	uint8_t *tmp = buf;
 	for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){
@@ -182,28 +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
 //  -------------------------------------------------------------------------
@@ -322,13 +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;
@@ -455,11 +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;
 }
 
@@ -495,7 +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++) {