[fixed]created new files misc_tools.(c|h) and moved hex_string_to_bin() there.

testing/misc_tools.c

@@ -0,0 +1,43 @@
+/* misc_tools.c
+ * 
+ * Miscellaneous functions and data structures for doing random things.
+ *
+ *  Copyright (C) 2013 Tox project All Rights Reserved.
+ *
+ *  This file is part of Tox.
+ *
+ *  Tox is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Tox is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with Tox.  If not, see <http://www.gnu.org/licenses/>.
+ *  
+ */
+ 
+#include "misc_tools.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h> //for sscanf
+
+//TODO: rewrite
+unsigned char * hex_string_to_bin(char hex_string[])
+{
+    size_t len = strlen(hex_string);
+    unsigned char *val = malloc(len);
+    char *pos = hex_string;
+    int i=0;
+    while(i < len) {
+        sscanf(pos,"%2hhx",&val[i]);
+        pos+=2;
+        i++;
+    }
+    return val;
+}