X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/d04b71c168abf2655583c7817127e1f68efa328f..a1689f417fc1a26be6f93f8e934d643fba51f3a7:/client/util.c

diff --git a/client/util.c b/client/util.c
index 9d4c83ee..586d930b 100644
--- a/client/util.c
+++ b/client/util.c
@@ -97,14 +97,26 @@ 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) {
+
+	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");
 }
 
@@ -158,9 +170,10 @@ 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)
@@ -503,10 +516,18 @@ uint32_t PackBits(uint8_t start, uint8_t len, uint8_t* bits) {
 
 // RotateLeft - Ultralight, Desfire, works on byte level
 // 00-01-02  >> 01-02-00
-void rol(uint8_t *data, const size_t len){
+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