Update README.md

[proxmark3-svn] / client / util.c

diff --git a/client/util.c b/client/util.c
index ab1582223a5bfff47f802ada8676c7c2e2923c2a..c5c7d7fe2f2fc3d019507426581c84bf43cdea64 100644 (file)
--- a/client/util.c
+++ b/client/util.c
@@ -15,8 +15,7 @@
 #include <termios.h>
 #include <sys/ioctl.h> 
 
 #include <termios.h>
 #include <sys/ioctl.h> 
 

-int ukbhit(void)
-{
+int ukbhit(void) {

   int cnt = 0;
   int error;
   static struct termios Otty, Ntty;
   int cnt = 0;
   int error;
   static struct termios Otty, Ntty;


@@ -47,7 +46,7 @@ int ukbhit(void) {
 
 // log files functions
 void AddLogLine(char *file, char *extData, char *c) {
 
 // log files functions
 void AddLogLine(char *file, char *extData, char *c) {

-       FILE *fLog = NULL;
+       FILE *f = NULL;

     char filename[FILE_PATH_SIZE] = {0x00};
     int len = 0;
 
     char filename[FILE_PATH_SIZE] = {0x00};
     int len = 0;
 


@@ -55,15 +54,16 @@ void AddLogLine(char *file, char *extData, char *c) {
     if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
     memcpy(filename, file, len);
    
     if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
     memcpy(filename, file, len);
    

-       fLog = fopen(filename, "a");
-       if (!fLog) {
+       f = fopen(filename, "a");
+       if (!f) {

                printf("Could not append log file %s", filename);
                return;
        }
 
                printf("Could not append log file %s", filename);
                return;
        }
 

-       fprintf(fLog, "%s", extData);
-       fprintf(fLog, "%s\n", c);
-       fclose(fLog);
+       fprintf(f, "%s", extData);
+       fprintf(f, "%s\n", c);
+       fflush(f);
+       fclose(f);

 }
 
 void AddLogHex(char *fileName, char *extData, const uint8_t * data, const size_t len){
 }
 
 void AddLogHex(char *fileName, char *extData, const uint8_t * data, const size_t len){


@@ -71,28 +71,33 @@ void AddLogHex(char *fileName, char *extData, const uint8_t * data, const size_t
 }
 
 void AddLogUint64(char *fileName, char *extData, const uint64_t data) {
 }
 
 void AddLogUint64(char *fileName, char *extData, const uint64_t data) {

-  char buf[100] = {0};
-       sprintf(buf, "%x%x", (unsigned int)((data & 0xFFFFFFFF00000000) >> 32), (unsigned int)(data & 0xFFFFFFFF));
+       char buf[20] = {0};
+       memset(buf, 0x00, sizeof(buf));
+       //sprintf(buf, "%X%X", (unsigned int)((data & 0xFFFFFFFF00000000) >> 32), (unsigned int)(data & 0xFFFFFFFF));
+       sprintf(buf, "%012"llx"", data);

        AddLogLine(fileName, extData, buf);
 }
 
 void AddLogCurrentDT(char *fileName) {
        AddLogLine(fileName, extData, buf);
 }
 
 void AddLogCurrentDT(char *fileName) {

-       char buff[20];
+       char buf[20];
+       memset(buf, 0x00, sizeof(buf));

        struct tm *curTime;
        struct tm *curTime;

-

        time_t now = time(0);
        curTime = gmtime(&now);
        time_t now = time(0);
        curTime = gmtime(&now);

-
-       strftime (buff, sizeof(buff), "%Y-%m-%d %H:%M:%S", curTime);
-       AddLogLine(fileName, "\nanticollision: ", buff);
+       strftime (buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", curTime);
+       AddLogLine(fileName, "\nanticollision: ", buf);

 }
 
 }
 

-void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount) {
+void FillFileNameByUID(char *fileName, uint8_t *uid, char *ext, int byteCount) {
+       if ( fileName == NULL || uid == NULL || ext == NULL ){
+               printf("error: parameter is NULL\n");
+               return;
+       }

        char * fnameptr = fileName;
        char * fnameptr = fileName;

-       memset(fileName, 0x00, 200);
+       memset(fileName, 0x00, FILE_PATH_SIZE);

        
        for (int j = 0; j < byteCount; j++, fnameptr += 2)
        
        for (int j = 0; j < byteCount; j++, fnameptr += 2)

-               sprintf(fnameptr, "%02x", uid[j]); 
+               sprintf(fnameptr, "%02X", uid[j]); 

        sprintf(fnameptr, "%s", ext); 
 }
 
        sprintf(fnameptr, "%s", ext); 
 }
 


@@ -103,15 +108,20 @@ void print_hex(const uint8_t * data, const size_t len) {
                printf("%02x ", data[i]);
        printf("\n");
 }
                printf("%02x ", data[i]);
        printf("\n");
 }

+

 void print_hex_break(const uint8_t *data, const size_t len, uint8_t breaks) {
 void print_hex_break(const uint8_t *data, const size_t len, uint8_t breaks) {

-       size_t i;
-       for ( i = 0; i < len; ++i) {
+
+       int rownum = 0;
+       printf("[%02d] | ", rownum);
+       for (int i = 0; i < len; ++i) {

 
                printf("%02X ", data[i]);
                
                // check if a line break is needed
 
                printf("%02X ", data[i]);
                
                // check if a line break is needed

-               if ( breaks > 0 && !(i+1 % breaks) )
-                       printf("(%d %d)\n", i+1 , breaks);
+               if ( breaks > 0 && !((i+1) % breaks) && (i+1 < len) ) {
+                       ++rownum;
+                       printf("\n[%02d] | ", rownum);
+               }

        }
        printf("\n");
 }
        }
        printf("\n");
 }


@@ -126,13 +136,14 @@ char *sprint_hex(const uint8_t *data, const size_t len) {
 
        for (i=0; i < maxLen; ++i, tmp += 3)
                sprintf(tmp, "%02X ", data[i]);
 
        for (i=0; i < maxLen; ++i, tmp += 3)
                sprintf(tmp, "%02X ", data[i]);

-

        return buf;
 }
 
 char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks) {
        return buf;
 }
 
 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
        // 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
        if (breaks==0)
                max_len = ( len > MAX_BIN_BREAK_LENGTH ) ? MAX_BIN_BREAK_LENGTH : len;
        else


@@ -143,20 +154,20 @@ char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t brea
        memset(buf, 0x00, sizeof(buf));
        char *tmp = buf;
 
        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
        // 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++) {
+       for (out_index=0; out_index < max_len-2; out_index++) {

                // set character
                // set character

-               sprintf(tmp++, "%u", data[in_index]);
+               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");
                // 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++;
        }
                in_index++;
        }

-
+       // last char.
+       sprintf(tmp++, "%u", (unsigned int) data[in_index]);

        return buf;
 }
 
        return buf;
 }
 


@@ -172,38 +183,45 @@ char *sprint_hex_ascii(const uint8_t *data, const size_t len) {
        sprintf(tmp, "%s| %s", sprint_hex(data, max_len) , data);       
        return buf;
 }
        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)
-{
+
+void num_to_bytes(uint64_t n, size_t len, uint8_t* dest) {

        while (len--) {
                dest[len] = (uint8_t) n;
                n >>= 8;
        }
 }
 
        while (len--) {
                dest[len] = (uint8_t) n;
                n >>= 8;
        }
 }
 

-uint64_t bytes_to_num(uint8_t* src, size_t len)
-{
+uint64_t bytes_to_num(uint8_t* src, size_t len) {

        uint64_t num = 0;
        uint64_t num = 0;

-       while (len--)
-       {
+       while (len--) {

                num = (num << 8) | (*src);
                src++;
        }
        return num;
 }
 
                num = (num << 8) | (*src);
                src++;
        }
        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;
        }
 }
 
        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){
 // 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){

-       uint8_t buf[64];
+       static uint8_t buf[64];

        memset(buf, 0x00, 64);
        uint8_t *tmp = buf;
        for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){
        memset(buf, 0x00, 64);
        uint8_t *tmp = buf;
        for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){


@@ -211,9 +229,11 @@ uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockS
                        tmp[i+(blockSize*block)] = src[(blockSize-1-i)+(blockSize*block)];
                }
        }
                        tmp[i+(blockSize*block)] = src[(blockSize-1-i)+(blockSize*block)];
                }
        }

-       return 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++){
 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++){


@@ -222,7 +242,6 @@ void SwapEndian64ex(const uint8_t *src, const size_t len, const uint8_t blockSiz
        }
 }
 
        }
 }
 

-

 //  -------------------------------------------------------------------------
 //  string parameters lib
 //  -------------------------------------------------------------------------
 //  -------------------------------------------------------------------------
 //  string parameters lib
 //  -------------------------------------------------------------------------


@@ -261,7 +280,6 @@ int param_getptr(const char *line, int *bg, int *en, int paramnum)
        return 0;
 }
 
        return 0;
 }
 

-

 char param_getchar(const char *line, int paramnum)
 {
        int bg, en;
 char param_getchar(const char *line, int paramnum)
 {
        int bg, en;


@@ -333,8 +351,6 @@ uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base)
                return strtoull(&line[bg], NULL, base);
        else
                return deflt;
                return strtoull(&line[bg], NULL, base);
        else
                return deflt;

-
-       return 0;

 }
 
 int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
 }
 
 int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)


@@ -487,6 +503,7 @@ void wiegand_add_parity(uint8_t *target, uint8_t *source, uint8_t length)
     *(target)= GetParity(source + length / 2, ODD, length / 2);
 }
 
     *(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;
 void xor(unsigned char * dst, unsigned char * src, size_t len) {
    for( ; len > 0; len--,dst++,src++)
        *dst ^= *src;


@@ -495,7 +512,10 @@ void xor(unsigned char * dst, unsigned char * src, size_t len) {
 int32_t le24toh (uint8_t data[3]) {
     return (data[2] << 16) | (data[1] << 8) | data[0];
 }
 int32_t le24toh (uint8_t data[3]) {
     return (data[2] << 16) | (data[1] << 8) | data[0];
 }

-
+uint32_t le32toh (uint8_t *data) {
+       return (uint32_t)( (data[3]<<24) | (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;
 uint32_t PackBits(uint8_t start, uint8_t len, uint8_t* bits) {
 
        if (len > 32) return 0;


@@ -520,10 +540,37 @@ void rol(uint8_t *data, const size_t len){
     data[len-1] = first;
 }
 
     data[len-1] = first;
 }
 

+// Swap bit order on a uint32_t value.  Can be limited by nrbits just use say 8bits reversal
+// And clears the rest of the bits.

 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;
 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;

+}
+/*
+ ref  http://www.csm.ornl.gov/~dunigan/crc.html
+ Returns the value v with the bottom b [0,32] bits reflected. 
+ Example: reflect(0x3e23L,3) == 0x3e26
+*/
+uint32_t reflect(uint32_t v, int b) {
+       uint32_t t = v;
+       for ( int i = 0; i < b; ++i) {
+               if (t & 1)
+                       v |=  BITMASK((b-1)-i);
+               else
+                       v &= ~BITMASK((b-1)-i);
+               t>>=1;
+       }
+       return v;
+}
+
+uint64_t HornerScheme(uint64_t num, uint64_t divider, uint64_t factor) {
+   uint64_t remainder=0, quotient=0, result=0;
+   remainder = num % divider;
+   quotient = num / divider;
+   if(!(quotient == 0 && remainder == 0))
+   result += HornerScheme(quotient, divider, factor) * factor + remainder;
+   return result;

 }
\ No newline at end of file
 }
\ No newline at end of file