X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/23b80a733436e88426c2b857950674768eb2b8a2..9332b857ffeee343334064d3ca53048f59c55e50:/client/util.c?ds=inline

diff --git a/client/util.c b/client/util.c
index 56c4998d..159929b5 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>
@@ -20,7 +21,6 @@ int ukbhit(void)
   int error;
   static struct termios Otty, Ntty;
 
-
   tcgetattr( 0, &Otty);
   Ntty = Otty;
 
@@ -108,32 +108,61 @@ void print_hex(const uint8_t * data, const size_t len)
 	printf("\n");
 }
 
-char * sprint_hex(const uint8_t * data, const size_t len) {
+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;
 
 	for (i=0; i < maxLen; ++i, tmp += 3)
-		sprintf(tmp, "%02x ", data[i]);
+		sprintf(tmp, "%02X ", data[i]);
 
 	return buf;
 }
 
-char * sprint_bin(const uint8_t * data, const size_t len) {
-	
-	int maxLen = ( len > 1024) ? 1024 : len;
-	static char buf[1024];
-	char * tmp = buf;
-	size_t i;
-
-	for (i=0; i < maxLen; ++i, ++tmp)
-		sprintf(tmp, "%u", data[i]);
+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;
+	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;
+
+	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++) {
+		// 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;
 }
 
+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--) {
@@ -153,26 +182,27 @@ uint64_t bytes_to_num(uint8_t* src, size_t len)
 	return num;
 }
 
-//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;
+void num_to_bytebits(uint64_t	n, size_t len, uint8_t *dest) {
+	while (len--) {
+		dest[len] = n & 1;
+		n >>= 1;
+	}
+}
 
-    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;
+// 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;
 }
 
 //  -------------------------------------------------------------------------
@@ -213,6 +243,7 @@ int param_getptr(const char *line, int *bg, int *en, int paramnum)
 	return 0;
 }
 
+
 char param_getchar(const char *line, int paramnum)
 {
 	int bg, en;
@@ -224,7 +255,36 @@ char param_getchar(const char *line, int paramnum)
 
 uint8_t param_get8(const char *line, int paramnum)
 {
-	return param_get8ex(line, paramnum, 10, 0);
+	return param_get8ex(line, paramnum, 0, 10);
+}
+
+/**
+ * @brief Reads a decimal integer (actually, 0-254, not 255)
+ * @param line
+ * @param paramnum
+ * @return -1 if error
+ */
+uint8_t param_getdec(const char *line, int paramnum, uint8_t *destination)
+{
+	uint8_t val =  param_get8ex(line, paramnum, 255, 10);
+	if( (int8_t) val == -1) return 1;
+	(*destination) = val;
+	return 0;
+}
+/**
+ * @brief Checks if param is decimal
+ * @param line
+ * @param paramnum
+ * @return
+ */
+uint8_t param_isdec(const char *line, int paramnum)
+{
+	int bg, en;
+	//TODO, check more thorougly
+	if (!param_getptr(line, &bg, &en, paramnum)) return 1;
+		//		return strtoul(&line[bg], NULL, 10) & 0xff;
+
+	return 0;
 }
 
 uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base)
@@ -263,13 +323,11 @@ 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;
@@ -280,7 +338,28 @@ int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
 
 	return 0;
 }
+int param_gethex_ex(const char *line, int paramnum, uint8_t * data, int *hexcnt)
+{
+	int bg, en, temp, i;
+
+	//if (hexcnt % 2)
+	//	return 1;
+	
+	if (param_getptr(line, &bg, &en, paramnum)) return 1;
+
+	*hexcnt = en - bg + 1;
+	if (*hexcnt % 2) //error if not complete hex bytes
+		return 1;
+
+	for(i = 0; i < *hexcnt; i += 2) {
+		if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) ) return 1;
+		
+		sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
+		data[i / 2] = temp & 0xff;
+	}	
 
+	return 0;
+}
 int param_getstr(const char *line, int paramnum, char * str)
 {
 	int bg, en;
@@ -292,3 +371,134 @@ int param_getstr(const char *line, int paramnum, char * str)
 	
 	return en - bg + 1;
 }
+
+/*
+The following methods comes from Rfidler sourcecode.
+https://github.com/ApertureLabsLtd/RFIDler/blob/master/firmware/Pic32/RFIDler.X/src/
+*/
+
+// convert hex to sequence of 0/1 bit values
+// returns number of bits converted
+int hextobinarray(char *target, char *source)
+{
+    int length, i, count= 0;
+    char x;
+
+    length = strlen(source);
+    // process 4 bits (1 hex digit) at a time
+    while(length--)
+    {
+        x= *(source++);
+        // capitalize
+        if (x >= 'a' && x <= 'f')
+            x -= 32;
+        // convert to numeric value
+        if (x >= '0' && x <= '9')
+            x -= '0';
+        else if (x >= 'A' && x <= 'F')
+            x -= 'A' - 10;
+        else
+            return 0;
+        // output
+        for(i= 0 ; i < 4 ; ++i, ++count)
+            *(target++)= (x >> (3 - i)) & 1;
+    }
+    
+    return count;
+}
+
+// convert hex to human readable binary string
+int hextobinstring(char *target, char *source)
+{
+    int length;
+
+    if(!(length= hextobinarray(target, source)))
+        return 0;
+    binarraytobinstring(target, target, length);
+    return length;
+}
+
+// convert binary array of 0x00/0x01 values to hex (safe to do in place as target will always be shorter than source)
+// return number of bits converted
+int binarraytohex(char *target, char *source, int length)
+{
+    unsigned char i, x;
+    int j = length;
+
+    if(j % 4)
+        return 0;
+
+    while(j)
+    {
+        for(i= x= 0 ; i < 4 ; ++i)
+            x +=  ( source[i] << (3 - i));
+        sprintf(target,"%X", x);
+        ++target;
+        source += 4;
+        j -= 4;
+    }
+    return length;
+}
+
+// convert binary array to human readable binary
+void binarraytobinstring(char *target, char *source,  int length)
+{
+    int i;
+
+    for(i= 0 ; i < length ; ++i)
+        *(target++)= *(source++) + '0';
+    *target= '\0';
+}
+
+// return parity bit required to match type
+uint8_t GetParity( uint8_t *bits, uint8_t type, int length)
+{
+    int x;
+
+    for(x= 0 ; length > 0 ; --length)
+        x += bits[length - 1];
+    x %= 2;
+
+    return x ^ type;
+}
+
+// add HID parity to binary array: EVEN prefix for 1st half of ID, ODD suffix for 2nd half
+void wiegand_add_parity(uint8_t *target, uint8_t *source, uint8_t length)
+{
+    *(target++)= GetParity(source, EVEN, length / 2);
+    memcpy(target, source, length);
+    target += length;
+    *(target)= GetParity(source + length / 2, ODD, length / 2);
+}
+
+void xor(unsigned char * dst, unsigned char * src, size_t len) {
+   for( ; len > 0; len--,dst++,src++)
+       *dst ^= *src;
+}
+
+int32_t le24toh (uint8_t data[3]) {
+    return (data[2] << 16) | (data[1] << 8) | data[0];
+}
+
+uint32_t PackBits(uint8_t start, uint8_t len, uint8_t* bits) {
+
+	if (len > 32) return 0;
+	
+	int i = start;
+	int j = len-1;
+	uint32_t tmp = 0;
+
+	for (; j >= 0; --j, ++i)
+		tmp	|= bits[i] << j;
+
+	return tmp;
+}
+
+// RotateLeft - Ultralight, Desfire
+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;
+}
\ No newline at end of file