X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/c585a5cf0b96d30119e1adb45c69e579e475d046..b31ef4f5104384d0d301dcd27d11b3a9861b1d82:/client/util.c diff --git a/client/util.c b/client/util.c index 54823422..e5cbc4aa 100644 --- a/client/util.c +++ b/client/util.c @@ -9,11 +9,13 @@ //----------------------------------------------------------------------------- #include "util.h" +#define MAX_BIN_BREAK_LENGTH (3072+384+1) #ifndef _WIN32 #include #include + int ukbhit(void) { int cnt = 0; @@ -21,7 +23,7 @@ int ukbhit(void) static struct termios Otty, Ntty; - tcgetattr( 0, &Otty); + if ( tcgetattr( 0, &Otty) == -1 ) return -1; Ntty = Otty; Ntty.c_iflag = 0; /* input mode */ @@ -108,12 +110,12 @@ 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; + char *tmp = buf; size_t i; for (i=0; i < maxLen; ++i, tmp += 3) @@ -123,16 +125,31 @@ char * sprint_hex(const uint8_t * data, const size_t len) { } 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]; - memset(buf, 0x00, 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; - 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", 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; @@ -160,18 +177,27 @@ uint64_t bytes_to_num(uint8_t* src, size_t len) return num; } +void num_to_bytebits(uint64_t n, size_t len, uint8_t *dest) { + while (len--) { + dest[len] = 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(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); + 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 temp; + return tmp; } //assumes little endian @@ -246,7 +272,7 @@ 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); } /** @@ -331,7 +357,28 @@ 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; @@ -392,7 +439,7 @@ int hextobinstring(char *target, char *source) // 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) +int binarraytohex(char *target,char *source, int length) { unsigned char i, x; int j = length; @@ -423,7 +470,7 @@ void binarraytobinstring(char *target, char *source, int length) } // 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; @@ -435,10 +482,29 @@ uint8_t GetParity( char *bits, uint8_t type, int length) } // 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); } + +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]; +} + +// 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; +}