lf hid improvements - encoding and long tag simulation

[proxmark3-svn] / client / util.c

diff --git a/client/util.c b/client/util.c
index 9b99cdf1a9fbe0a037248fd1a4de2b4701fb1342..2be1e46b6fa4a03bc3c1bb170e1e7e579f349bc7 100644 (file)
--- a/client/util.c
+++ b/client/util.c
@@ -9,12 +9,24 @@
 //-----------------------------------------------------------------------------
 
 #include "util.h"
 //-----------------------------------------------------------------------------
 
 #include "util.h"

+
+#include <stdint.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <time.h>
+
+#ifdef _WIN32
+#include <windows.h>
+#endif
+

 #define MAX_BIN_BREAK_LENGTH   (3072+384+1)
 
 #ifndef _WIN32
 #include <termios.h>
 #include <sys/ioctl.h> 
 #define MAX_BIN_BREAK_LENGTH   (3072+384+1)
 
 #ifndef _WIN32
 #include <termios.h>
 #include <sys/ioctl.h> 

-
+#include <unistd.h>

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


@@ -22,25 +34,25 @@ int ukbhit(void)
   int error;
   static struct termios Otty, Ntty;
 
   int error;
   static struct termios Otty, Ntty;
 

-
-  if ( tcgetattr( 0, &Otty) == -1 ) return -1;
+  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 */
-
-  if (0 == (error = tcsetattr(0, TCSANOW, &Ntty))) {
-    error += ioctl(0, FIONREAD, &cnt);
-    error += tcsetattr(0, TCSANOW, &Otty);
+  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(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 );
 }
 
 #else
   }
 
   return ( error == 0 ? cnt : -1 );
 }
 
 #else

+

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


@@ -98,6 +110,32 @@ void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount)
        sprintf(fnameptr, "%s", ext); 
 }
 
        sprintf(fnameptr, "%s", ext); 
 }
 

+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;
+       size_t i;
+       memset(tmp, 0x00, hex_max_len);
+
+       int maxLen = ( hex_len > hex_max_len) ? hex_max_len : hex_len;
+
+       for (i = 0; i < maxLen; ++i, tmp += 2 + spaces_between) {
+               sprintf(tmp, (uppercase) ? "%02X" : "%02x", (unsigned int) hex_data[i]); 
+               
+               for (int j = 0; j < spaces_between; j++)
+                       sprintf(tmp + 2 + j, " ");
+       }
+       
+       i *= (2 + spaces_between);
+       int minStrLen = min_str_len > i ? min_str_len : 0;
+       if (minStrLen > hex_max_len)
+               minStrLen = hex_max_len;
+       for(; i < minStrLen; i++, tmp += 1) 
+               sprintf(tmp, " ");
+
+       return;
+}
+

 // printing and converting functions
 
 void print_hex(const uint8_t * data, const size_t len)
 // printing and converting functions
 
 void print_hex(const uint8_t * data, const size_t len)


@@ -110,20 +148,43 @@ void print_hex(const uint8_t * data, const size_t len)
        printf("\n");
 }
 
        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");
+}
+

 char *sprint_hex(const uint8_t *data, const size_t len) {
 char *sprint_hex(const uint8_t *data, const size_t len) {

+       static char buf[1025] = {0};

        
        

-       int maxLen = ( len > 1024/3) ? 1024/3 : len;
-       static char buf[1024];
-       memset(buf, 0x00, 1024);
-       char *tmp = buf;
-       size_t i;
+       hex_to_buffer((uint8_t *)buf, data, len, sizeof(buf) - 1, 0, 1, false);
+
+       return buf;
+}

 
 

-       for (i=0; i < maxLen; ++i, tmp += 3)
-               sprintf(tmp, "%02x ", (unsigned int) data[i]);
+char *sprint_hex_inrow_ex(const uint8_t *data, const size_t len, const size_t min_str_len) {
+       static char buf[1025] = {0};
+
+       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) {
        // make sure we don't go beyond our char array memory
        int max_len;
 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;


@@ -144,7 +205,7 @@ char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t brea
                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 (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) ) {
+               if ( (breaks > 0) && !((in_index+1) % breaks) && (out_index+1 < max_len) ) {

                        // increment and print line break
                        out_index++;
                        sprintf(tmp++, "%s","\n");
                        // increment and print line break
                        out_index++;
                        sprintf(tmp++, "%s","\n");


@@ -158,6 +219,51 @@ 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_hex_ascii(const uint8_t *data, const size_t len) {
+       static char buf[1024];
+       char *tmp = buf;
+       memset(buf, 0x00, 1024);
+       size_t max_len = (len > 255) ? 255 : len;
+       // max 255 bytes * 3 + 2 characters = 767 in buffer
+       sprintf(tmp, "%.765s| ", sprint_hex(data, max_len) );
+       
+       size_t i = 0;
+       size_t pos = (max_len * 3)+2;
+       // add another 255 characters ascii = 1020 characters of buffer used
+       while(i < max_len) {
+               char c = data[i];
+               if ( (c < 32) || (c == 127))
+                       c = '.';
+               sprintf(tmp+pos+i, "%c",  c);
+               ++i;
+       }
+       return buf;
+}
+
+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--) {


@@ -184,6 +290,24 @@ void num_to_bytebits(uint64_t      n, size_t len, uint8_t *dest) {
        }
 }
 
        }
 }
 

+//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
 // 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


@@ -200,6 +324,16 @@ uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockS
        return tmp;
 }
 
        return tmp;
 }
 

+// 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++){
+                       dest[i+(blockSize*block)] = src[(blockSize-1-i)+(blockSize*block)];
+               }
+       }
+}
+

 //assumes little endian
 char * printBits(size_t const size, void const * const ptr)
 {
 //assumes little endian
 char * printBits(size_t const size, void const * const ptr)
 {


@@ -222,13 +356,30 @@ char * printBits(size_t const size, void const * const ptr)
        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)
 //  paramnum - param number (from 0)
 //  -------------------------------------------------------------------------
 int param_getptr(const char *line, int *bg, int *en, int paramnum)


@@ -261,13 +412,28 @@ int param_getptr(const char *line, int *bg, int *en, int paramnum)
 }
 
 
 }
 
 

-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)


@@ -332,8 +498,6 @@ 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)


@@ -349,7 +513,7 @@ int param_gethex(const char *line, int paramnum, uint8_t * data, int 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;


@@ -371,7 +535,7 @@ int param_gethex_ex(const char *line, int paramnum, uint8_t * data, int *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;


@@ -379,11 +543,66 @@ int param_gethex_ex(const char *line, int paramnum, uint8_t * data, int *hexcnt)
 
        return 0;
 }
 
        return 0;
 }

-int param_getstr(const char *line, int paramnum, char * str)
+
+int param_gethex_to_eol(const char *line, int paramnum, uint8_t * data, int maxdatalen, int *datalen) {
+       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, "%x", &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;
 
 {
        int bg, en;
 

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

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


@@ -401,6 +620,7 @@ https://github.com/ApertureLabsLtd/RFIDler/blob/master/firmware/Pic32/RFIDler.X/
 int hextobinarray(char *target, char *source)
 {
     int length, i, count= 0;
 int hextobinarray(char *target, char *source)
 {
     int length, i, count= 0;

+    char* start = source;

     char x;
 
     length = strlen(source);
     char x;
 
     length = strlen(source);


@@ -416,8 +636,10 @@ int hextobinarray(char *target, char *source)
             x -= '0';
         else if (x >= 'A' && x <= 'F')
             x -= 'A' - 10;
             x -= '0';
         else if (x >= 'A' && x <= 'F')
             x -= 'A' - 10;

-        else
+        else {
+               printf("Discovered unknown character %c %d at idx %tu of %s\n", x, x, source - start, start);

             return 0;
             return 0;

+        }

         // output
         for(i= 0 ; i < 4 ; ++i, ++count)
             *(target++)= (x >> (3 - i)) & 1;
         // output
         for(i= 0 ; i < 4 ; ++i, ++count)
             *(target++)= (x >> (3 - i)) & 1;


@@ -490,6 +712,7 @@ 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;


@@ -498,6 +721,9 @@ 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]);
+}

 
 // RotateLeft - Ultralight, Desfire, works on byte level
 // 00-01-02  >> 01-02-00
 
 // RotateLeft - Ultralight, Desfire, works on byte level
 // 00-01-02  >> 01-02-00


@@ -508,3 +734,53 @@ void rol(uint8_t *data, const size_t len){
     }
     data[len-1] = first;
 }
     }
     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
+}
+