Fix PrintAndLogEx ERR (#748)

[proxmark3-svn] / client / util.c

diff --git a/client/util.c b/client/util.c
index c6d5f0d6207e35803f8d79f51aeae0c9c1836bc5..dec7c5a1f4518dca7648356c30c1f3f157075b92 100644 (file)
--- a/client/util.c
+++ b/client/util.c
@@ -16,6 +16,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <time.h>
+#include <stdarg.h>
 
 #ifdef _WIN32
 #include <windows.h>
@@ -110,6 +111,46 @@ void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount)
        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) {