Update README.md

[proxmark3-svn] / client / util.c

diff --git a/client/util.c b/client/util.c
index 8357f60137a5234007df335578656615e469cb65..5dc9a4556b1668708f9323138191401593c95e1c 100644 (file)
--- a/client/util.c
+++ b/client/util.c
@@ -111,6 +111,32 @@ 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)


@@ -141,19 +167,25 @@ void print_hex_break(const uint8_t *data, const size_t len, uint8_t breaks) {
 }
 
 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;


@@ -210,7 +242,7 @@ char *sprint_hex_ascii(const uint8_t *data, const size_t len) {
        return buf;
 }
 
        return buf;
 }
 

-char *sprint_ascii(const uint8_t *data, const size_t len) {
+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);
        static char buf[1024];
        char *tmp = buf;
        memset(buf, 0x00, 1024);


@@ -221,9 +253,18 @@ char *sprint_ascii(const uint8_t *data, const size_t len) {
                tmp[i] = ((c < 32) || (c == 127)) ? '.' : c;
                ++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;
 }
 
        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--) {


@@ -316,6 +357,23 @@ 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
 //  -------------------------------------------------------------------------
 //  -------------------------------------------------------------------------
 //  string parameters lib
 //  -------------------------------------------------------------------------


@@ -364,13 +422,19 @@ int param_getlength(const char *line, int paramnum)
        return en - bg + 1;
 }
 
        return en - bg + 1;
 }
 

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


@@ -450,7 +514,7 @@ 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;


@@ -472,7 +536,7 @@ 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;


@@ -480,11 +544,66 @@ 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;


@@ -502,6 +621,7 @@ 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);


@@ -517,8 +637,10 @@ 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;