Fix some printf/scanf format strings

[proxmark3-svn] / client / util.c

diff --git a/client/util.c b/client/util.c
index 5bb98fd77d40fa6cd73af5e4676b76209591f1b7..2058044802f6e19e50086bec871db7b56513c0e0 100644 (file)
--- a/client/util.c
+++ b/client/util.c
@@ -10,9 +10,25 @@
 
 #include "util.h"
 
 
 #include "util.h"
 

+#include <stdint.h>
+#include <inttypes.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <time.h>
+#include <stdarg.h>
+
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
+#define MAX_BIN_BREAK_LENGTH   (3072+384+1)
+

 #ifndef _WIN32
 #include <termios.h>
 #ifndef _WIN32
 #include <termios.h>

-#include <sys/ioctl.h> 
+#include <sys/ioctl.h>
+#include <unistd.h>

 
 int ukbhit(void)
 {
 
 int ukbhit(void)
 {


@@ -20,25 +36,40 @@ int ukbhit(void)
   int error;
   static struct termios Otty, Ntty;
 
   int error;
   static struct termios Otty, Ntty;
 

-
-  tcgetattr( 0, &Otty);
+  if ( tcgetattr(STDIN_FILENO, &Otty) == -1 ) return -1;

   Ntty = Otty;
 
   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          = 0x0000;   // input mode
+  Ntty.c_oflag          = 0x0000;   // output mode
+  Ntty.c_lflag         &= ~ICANON;  // control mode = raw
+  Ntty.c_cc[VMIN]       = 1;        // return if at least 1 character is in the queue
+  Ntty.c_cc[VTIME]      = 0;        // no timeout. Wait forever

 
 

-  if (0 == (error = tcsetattr(0, TCSANOW, &Ntty))) {
-    error += ioctl(0, FIONREAD, &cnt);
-    error += tcsetattr(0, TCSANOW, &Otty);
+  if (0 == (error = tcsetattr(STDIN_FILENO, TCSANOW, &Ntty))) {   // set new attributes
+       error += ioctl(STDIN_FILENO, FIONREAD, &cnt);                 // get number of characters availabe
+       error += tcsetattr(STDIN_FILENO, TCSANOW, &Otty);             // reset attributes

   }
 
   }
 

-  return ( error == 0 ? cnt : -1 );
+  return cnt;

 }
 
 }
 

-#else
+char getch(void)
+{
+       char c;
+       int error;
+       struct termios Otty, Ntty;
+       if ( tcgetattr(STDIN_FILENO, &Otty) == -1 ) return -1;
+       Ntty = Otty;
+       Ntty.c_lflag &= ~ICANON; /* disable buffered i/o */
+       if (0 == (error = tcsetattr(STDIN_FILENO, TCSANOW, &Ntty))) {   // set new attributes
+               c = getchar();
+               error += tcsetattr(STDIN_FILENO, TCSANOW, &Otty);           // reset attributes
+       }
+       return ( error == 0 ? c : -1 );
+}
+
+#else // _WIN32
+

 #include <conio.h>
 int ukbhit(void) {
        return kbhit();
 #include <conio.h>
 int ukbhit(void) {
        return kbhit();


@@ -48,13 +79,13 @@ int ukbhit(void) {
 // log files functions
 void AddLogLine(char *file, char *extData, char *c) {
        FILE *fLog = NULL;
 // log files functions
 void AddLogLine(char *file, char *extData, char *c) {
        FILE *fLog = NULL;

-    char filename[FILE_PATH_SIZE] = {0x00};
-    int len = 0;
+       char filename[FILE_PATH_SIZE] = {0x00};
+       int len = 0;
+
+       len = strlen(file);
+       if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
+       memcpy(filename, file, len);

 
 

-    len = strlen(file);
-    if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
-    memcpy(filename, file, len);
-   

        fLog = fopen(filename, "a");
        if (!fLog) {
                printf("Could not append log file %s", filename);
        fLog = fopen(filename, "a");
        if (!fLog) {
                printf("Could not append log file %s", filename);


@@ -87,50 +118,127 @@ void AddLogCurrentDT(char *fileName) {
        AddLogLine(fileName, "\nanticollision: ", buff);
 }
 
        AddLogLine(fileName, "\nanticollision: ", buff);
 }
 

-void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount) {
+void FillFileNameByUID(char *fileName, uint8_t *uid, char *ext, int byteCount) {

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

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

        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, "%s", ext); 
+               sprintf(fnameptr, "%02x", (unsigned int) uid[j]);
+       sprintf(fnameptr, "%s", ext);
+}
+
+// fill buffer from structure [{uint8_t data, size_t length},...]
+int FillBuffer(uint8_t *data, size_t maxDataLength, size_t *dataLength, ...) {
+       *dataLength = 0;
+       va_list valist;
+       va_start(valist, dataLength);
+
+       uint8_t *vdata = NULL;
+       size_t vlength = 0;
+       do{
+               vdata = va_arg(valist, uint8_t *);
+               if (!vdata)
+                       break;
+
+               vlength = va_arg(valist, size_t);
+               if (*dataLength + vlength >  maxDataLength) {
+                       va_end(valist);
+                       return 1;
+               }
+
+               memcpy(&data[*dataLength], vdata, vlength);
+               *dataLength += vlength;
+
+       } while (vdata);
+
+       va_end(valist);
+
+       return 0;
+}
+
+bool CheckStringIsHEXValue(const char *value) {
+       for (int i = 0; i < strlen(value); i++)
+               if (!isxdigit(value[i]))
+                       return false;
+
+       if (strlen(value) % 2)
+               return false;
+
+       return true;
+}
+
+void hex_to_buffer(const uint8_t *buf, const uint8_t *hex_data, const size_t hex_len, const size_t hex_max_len,
+       const size_t min_str_len, const size_t spaces_between, bool uppercase) {
+
+       char *tmp = (char *)buf;
+
+       int maxLen = (hex_len > hex_max_len) ? hex_max_len : hex_len;
+
+       for (int i = 0; i < maxLen; ++i, tmp += 2 + spaces_between) {
+               sprintf(tmp, (uppercase) ? "%02X" : "%02x", (unsigned int) hex_data[i]);
+
+               if (i != maxLen - 1)
+                       for (int j = 0; j < spaces_between; j++)
+                               sprintf(tmp + 2 + j, " ");
+       }
+
+       size_t len = strlen(tmp);
+       int minStrLen = min_str_len > len ? min_str_len : 0;
+       if (minStrLen > hex_max_len)
+               minStrLen = hex_max_len;
+       for (int i = len; i < minStrLen; i++, tmp += 1)
+               sprintf(tmp, " ");
+
+       return;

 }
 
 // printing and converting functions
 
 }
 
 // printing and converting functions
 

-void print_hex(const uint8_t * data, const size_t len)
-{
-       size_t i;
+char *sprint_hex(const uint8_t *data, const size_t len) {
+       static char buf[4097] = {0};

 
 

-       for (i=0; i < len; i++)
-               printf("%02x ", data[i]);
+       hex_to_buffer((uint8_t *)buf, data, len, sizeof(buf) - 1, 0, 1, false);

 
 

-       printf("\n");
+       return buf;

 }
 
 }
 

-char * sprint_hex(const uint8_t * data, const size_t len) {
-       
-       int maxLen = ( len > 1024/3) ? 1024/3 : len;
-       static char buf[1024];
-       char * tmp = buf;
-       size_t i;
+char *sprint_hex_inrow_ex(const uint8_t *data, const size_t len, const size_t min_str_len) {
+       static char buf[4097] = {0};

 
 

-       for (i=0; i < maxLen; ++i, tmp += 3)
-               sprintf(tmp, "%02x ", data[i]);
+       hex_to_buffer((uint8_t *)buf, data, len, sizeof(buf) - 1, min_str_len, 0, false);

 
        return buf;
 }
 
 
        return buf;
 }
 

+char *sprint_hex_inrow(const uint8_t *data, const size_t len) {
+       return sprint_hex_inrow_ex(data, len, 0);
+}
+

 char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks) {
 char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks) {

-       
-       int maxLen = ( len > 1024) ? 1024 : len;
-       static char buf[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;
 
        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; out_index++) {
+               // set character - (should be binary but verify it isn't more than 1 digit)
+               if (data[in_index]<10)
+                       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");
                        sprintf(tmp++, "%s","\n");

+               }
+               in_index++;

        }
 
        return buf;
        }
 
        return buf;


@@ -139,6 +247,30 @@ 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_bin(const uint8_t *data, const size_t len) {
        return sprint_bin_break(data, len, 0);
 }

+
+char *sprint_ascii_ex(const uint8_t *data, const size_t len, const size_t min_str_len) {
+       static char buf[1024];
+       char *tmp = buf;
+       memset(buf, 0x00, 1024);
+       size_t max_len = (len > 1010) ? 1010 : len;
+       size_t i = 0;
+       while(i < max_len){
+               char c = data[i];
+               tmp[i] = ((c < 32) || (c == 127)) ? '.' : c;
+               ++i;
+       }
+
+       int minStrLen = min_str_len > i ? min_str_len : 0;
+       for(; i < minStrLen; ++i)
+               tmp[i] = ' ';
+
+       return buf;
+}
+
+char *sprint_ascii(const uint8_t *data, const size_t len) {
+       return sprint_ascii_ex(data, len, 0);
+}
+

 void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
 {
        while (len--) {
 void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
 {
        while (len--) {


@@ -158,59 +290,102 @@ uint64_t bytes_to_num(uint8_t* src, size_t len)
        return num;
 }
 
        return num;
 }
 

+void num_to_bytebits(uint64_t   n, size_t len, uint8_t *dest) {
+       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;
+       }
+}
+
+// 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;
+}
+

 // 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
 // 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(uint8_t *src, size_t len){
-       static uint8_t temp[64]={0};
-       for (uint8_t block=0; block < (uint8_t)len/8; block++){
-               for (size_t i = 0; i < 8; i++){
-                       temp[i+(8*block)] = src[(7-i)+(8*block)];
+uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockSize){
+       static uint8_t buf[64];
+       memset(buf, 0x00, 64);
+       for (uint8_t block=0; block < (uint8_t)(len/blockSize); block++){
+               for (size_t i = 0; i < blockSize; i++){
+                       buf[i+(blockSize*block)] = src[(blockSize-1-i)+(blockSize*block)];

                }
        }
                }
        }

-       return temp;
+       return buf;

 }
 
 //assumes little endian
 }
 
 //assumes little endian

-char * printBits(size_t const size, void const * const ptr)
+char *printBits(size_t const size, void const * const ptr)

 {
 {

-    unsigned char *b = (unsigned char*) ptr;   
-    unsigned char byte;
+       unsigned char *b = (unsigned char*) ptr;
+       unsigned char byte;

        static char buf[1024];
        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);
+       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", (unsigned int)byte);

                        tmp++;
                        tmp++;

-        }
-    }
+               }
+       }

        return buf;
 }
 
        return buf;
 }
 

+char *printBitsPar(const uint8_t *b, size_t len) {
+       static char buf1[512] = {0};
+       static char buf2[512] = {0};
+       static char *buf;
+       if (buf != buf1)
+               buf = buf1;
+       else
+               buf = buf2;
+       memset(buf, 0x00, 512);
+
+       for (int i = 0; i < len; i++) {
+               buf[i] = ((b[i / 8] << (i % 8)) & 0x80) ? '1':'0';
+       }
+       return buf;
+}
+
+

 //  -------------------------------------------------------------------------
 //  string parameters lib
 //  -------------------------------------------------------------------------
 
 //  -------------------------------------------------------------------------
 //  line     - param line
 //  -------------------------------------------------------------------------
 //  string parameters lib
 //  -------------------------------------------------------------------------
 
 //  -------------------------------------------------------------------------
 //  line     - param line

-//  bg, en   - symbol numbers in param line of beginning an ending parameter
+//  bg, en   - symbol numbers in param line of beginning and ending parameter

 //  paramnum - param number (from 0)
 //  -------------------------------------------------------------------------
 int param_getptr(const char *line, int *bg, int *en, int paramnum)
 {
        int i;
        int len = strlen(line);
 //  paramnum - param number (from 0)
 //  -------------------------------------------------------------------------
 int param_getptr(const char *line, int *bg, int *en, int paramnum)
 {
        int i;
        int len = strlen(line);

-       
+

        *bg = 0;
        *en = 0;
        *bg = 0;
        *en = 0;

-       
+

   // skip spaces
        while (line[*bg] ==' ' || line[*bg]=='\t') (*bg)++;
        if (*bg >= len) {
   // skip spaces
        while (line[*bg] ==' ' || line[*bg]=='\t') (*bg)++;
        if (*bg >= len) {


@@ -220,31 +395,46 @@ int param_getptr(const char *line, int *bg, int *en, int paramnum)
        for (i = 0; i < paramnum; i++) {
                while (line[*bg]!=' ' && line[*bg]!='\t' && line[*bg] != '\0') (*bg)++;
                while (line[*bg]==' ' || line[*bg]=='\t') (*bg)++;
        for (i = 0; i < paramnum; i++) {
                while (line[*bg]!=' ' && line[*bg]!='\t' && line[*bg] != '\0') (*bg)++;
                while (line[*bg]==' ' || line[*bg]=='\t') (*bg)++;

-               
+

                if (line[*bg] == '\0') return 1;
        }
                if (line[*bg] == '\0') return 1;
        }

-       
+

        *en = *bg;
        while (line[*en] != ' ' && line[*en] != '\t' && line[*en] != '\0') (*en)++;
        *en = *bg;
        while (line[*en] != ' ' && line[*en] != '\t' && line[*en] != '\0') (*en)++;

-       
+

        (*en)--;
 
        return 0;
 }
 
 
        (*en)--;
 
        return 0;
 }
 
 

-char param_getchar(const char *line, int paramnum)
+int param_getlength(const char *line, int paramnum)

 {
        int bg, en;
 {
        int bg, en;

-       
+
+       if (param_getptr(line, &bg, &en, paramnum)) return 0;
+
+       return en - bg + 1;
+}
+
+char param_getchar(const char *line, int paramnum) {
+       return param_getchar_indx(line, 0, paramnum);
+}
+
+char param_getchar_indx(const char *line, int indx, int paramnum) {
+       int bg, en;
+

        if (param_getptr(line, &bg, &en, paramnum)) return 0x00;
 
        if (param_getptr(line, &bg, &en, paramnum)) return 0x00;
 

-       return line[bg];
+       if (bg + indx > en)
+               return '\0';
+
+       return line[bg + indx];

 }
 
 uint8_t param_get8(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);

 }
 
 /**
 }
 
 /**


@@ -271,7 +461,7 @@ 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;
        int bg, en;
        //TODO, check more thorougly
        if (!param_getptr(line, &bg, &en, paramnum)) return 1;

-               //              return strtoul(&line[bg], NULL, 10) & 0xff;
+               //      return strtoul(&line[bg], NULL, 10) & 0xff;

 
        return 0;
 }
 
        return 0;
 }


@@ -280,7 +470,7 @@ uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base)
 {
        int bg, en;
 
 {
        int bg, en;
 

-       if (!param_getptr(line, &bg, &en, paramnum)) 
+       if (!param_getptr(line, &bg, &en, paramnum))

                return strtoul(&line[bg], NULL, base) & 0xff;
        else
                return deflt;
                return strtoul(&line[bg], NULL, base) & 0xff;
        else
                return deflt;


@@ -290,7 +480,7 @@ uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base)
 {
        int bg, en;
 
 {
        int bg, en;
 

-       if (!param_getptr(line, &bg, &en, paramnum)) 
+       if (!param_getptr(line, &bg, &en, paramnum))

                return strtoul(&line[bg], NULL, base);
        else
                return deflt;
                return strtoul(&line[bg], NULL, base);
        else
                return deflt;


@@ -300,45 +490,122 @@ uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base)
 {
        int bg, en;
 
 {
        int bg, en;
 

-       if (!param_getptr(line, &bg, &en, paramnum)) 
+       if (!param_getptr(line, &bg, &en, paramnum))

                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)

 {
        int bg, en, temp, i;
 
        if (hexcnt % 2)
                return 1;
 {
        int bg, en, temp, i;
 
        if (hexcnt % 2)
                return 1;

-       
+

        if (param_getptr(line, &bg, &en, paramnum)) return 1;
 
        if (param_getptr(line, &bg, &en, paramnum)) return 1;
 

-       if (en - bg + 1 != hexcnt) 
+       if (en - bg + 1 != hexcnt)

                return 1;
 
        for(i = 0; i < hexcnt; i += 2) {
                return 1;
 
        for(i = 0; i < hexcnt; i += 2) {

-               if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) )   return 1;
-               
+               if (!(isxdigit((unsigned char)line[bg + i]) && isxdigit((unsigned char)line[bg + i + 1])) ) return 1;
+

                sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
                data[i / 2] = temp & 0xff;
                sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
                data[i / 2] = temp & 0xff;

-       }       
+       }

 
        return 0;
 }
 
 
        return 0;
 }
 

-int param_getstr(const char *line, int paramnum, char * str)
+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;
+
+       if (en - bg + 1 > *hexcnt) 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((unsigned char)line[bg + i]) && isxdigit((unsigned char)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_gethex_to_eol(const char *line, int paramnum, uint8_t * data, int maxdatalen, int *datalen) {

        int bg, en;
        int bg, en;

+       uint32_t temp;
+       char buf[5] = {0};
+
+       if (param_getptr(line, &bg, &en, paramnum)) return 1;
+
+       *datalen = 0;
+
+       int indx = bg;
+       while (line[indx]) {
+               if (line[indx] == '\t' || line[indx] == ' ') {
+                       indx++;
+                       continue;
+               }
+
+               if (isxdigit((unsigned char)line[indx])) {
+                       buf[strlen(buf) + 1] = 0x00;
+                       buf[strlen(buf)] = line[indx];
+               } else {
+                       // if we have symbols other than spaces and hex
+                       return 1;
+               }
+
+               if (*datalen >= maxdatalen) {
+                       // if we dont have space in buffer and have symbols to translate
+                       return 2;
+               }
+
+               if (strlen(buf) >= 2) {
+                       sscanf(buf, "%" SCNx32, &temp);
+                       data[*datalen] = (uint8_t)(temp & 0xff);
+                       *buf = 0;
+                       (*datalen)++;
+               }
+
+               indx++;
+       }
+
+       if (strlen(buf) > 0)
+               //error when not completed hex bytes
+               return 3;
+
+       return 0;
+}
+
+int param_getstr(const char *line, int paramnum, char * str, size_t buffersize)
+{
+       int bg, en;
+
+       if (param_getptr(line, &bg, &en, paramnum)) {
+               return 0;
+       }
+
+       // Prevent out of bounds errors
+       if (en - bg + 1 >= buffersize) {
+               printf("out of bounds error: want %d bytes have %zd bytes\n", en - bg + 1 + 1, buffersize);
+               return 0;
+       }

 
 

-       if (param_getptr(line, &bg, &en, paramnum)) return 0;
-       

        memcpy(str, line + bg, en - bg + 1);
        str[en - bg + 1] = 0;
        memcpy(str, line + bg, en - bg + 1);
        str[en - bg + 1] = 0;

-       
+

        return en - bg + 1;
 }
 
        return en - bg + 1;
 }
 


@@ -351,92 +618,140 @@ https://github.com/ApertureLabsLtd/RFIDler/blob/master/firmware/Pic32/RFIDler.X/
 // returns number of bits converted
 int hextobinarray(char *target, char *source)
 {
 // 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;
+       int length, i, count= 0;
+       char* start = source;
+       char x;

 
 

-    if(!(length= hextobinarray(target, source)))
-        return 0;
-    binarraytobinstring(target, target, length);
-    return length;
+       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 {
+                       printf("Discovered unknown character %c %d at idx %tu of %s\n", x, x, source - start, start);
+                       return 0;
+               }
+               // output
+               for(i= 0 ; i < 4 ; ++i, ++count)
+                       *(target++)= (x >> (3 - i)) & 1;
+       }
+
+       return count;

 }
 
 // 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
 }
 
 // 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 binarraytohex(char *target,char *source, int length)

 {
 {

-    int i;
+       unsigned char i, x;
+       int j = length;
+
+       if(j % 4)
+               return 0;

 
 

-    for(i= 0 ; i < length ; ++i)
-        *(target++)= *(source++) + '0';
-    *target= '\0';
+       while(j)
+       {
+               for(i= x= 0 ; i < 4 ; ++i)
+                       x +=  ( source[i] << (3 - i));
+               sprintf(target,"%X", (unsigned int)x);
+               ++target;
+               source += 4;
+               j -= 4;
+       }
+       return length;

 }
 
 // return parity bit required to match type
 }
 
 // return parity bit required to match type

-uint8_t GetParity( char *bits, uint8_t type, int length)
+uint8_t GetParity( uint8_t *bits, uint8_t type, int length)

 {
 {

-    int x;
+       int x;

 
 

-    for(x= 0 ; length > 0 ; --length)
-        x += bits[length - 1];
-    x %= 2;
+       for(x= 0 ; length > 0 ; --length)
+               x += bits[length - 1];
+       x %= 2;

 
 

-    return x ^ type;
+       return x ^ type;

 }
 
 // add HID parity to binary array: EVEN prefix for 1st half of ID, ODD suffix for 2nd half
 }
 
 // add HID parity to binary array: EVEN prefix for 1st half of ID, ODD suffix for 2nd half

-void wiegand_add_parity(char *target, char *source, char length)
+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);
+       *(target++)= GetParity(source, EVEN, length / 2);
+       memcpy(target, source, length);
+       target += length;
+       *(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;
+}
+
+// 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;
+}
+
+
+// Replace unprintable characters with a dot in char buffer
+void clean_ascii(unsigned char *buf, size_t len) {
+  for (size_t i = 0; i < len; i++) {
+       if (!isprint(buf[i]))
+         buf[i] = '.';
+  }
+}
+
+// replace \r \n to \0
+void strcleanrn(char *buf, size_t len) {
+       strcreplace(buf, len, '\n', '\0');
+       strcreplace(buf, len, '\r', '\0');
+}
+
+// replace char in buffer
+void strcreplace(char *buf, size_t len, char from, char to) {
+  for (size_t i = 0; i < len; i++) {
+       if (buf[i] == from)
+         buf[i] = to;
+  }
+}
+
+char *strmcopy(char *buf) {
+       char * str = NULL;
+       if ((str = (char*) malloc(strlen(buf) + 1)) != NULL) {
+               memset(str, 0, strlen(buf) + 1);
+               strcpy(str, buf);
+       }
+       return str;
+}
+
+
+// determine number of logical CPU cores (use for multithreaded functions)
+extern int num_CPUs(void)
+{
+#if defined(_WIN32)
+       #include <sysinfoapi.h>
+       SYSTEM_INFO sysinfo;
+       GetSystemInfo(&sysinfo);
+       return sysinfo.dwNumberOfProcessors;
+#elif defined(__linux__) || defined(__APPLE__)
+       #include <unistd.h>
+       return sysconf(_SC_NPROCESSORS_ONLN);
+#else
+       return 1;
+#endif
+}
+