updated included zerotierone src

zerotierone/node/Utils.hpp

@@ -49,6 +49,7 @@ public:
 	 * @return True if strings are equal
 	 */
 	static inline bool secureEq(const void *a,const void *b,unsigned int len)
+		throw()
 	{
 		uint8_t diff = 0;
 		for(unsigned int i=0;i<len;++i)
@@ -224,17 +225,27 @@ public:
 	}
 
 	/**
-	 * Perform a safe C string copy, ALWAYS null-terminating the result
+	 * Perform a safe C string copy
 	 *
-	 * This will never ever EVER result in dest[] not being null-terminated
-	 * regardless of any input parameter (other than len==0 which is invalid).
-	 *
-	 * @param dest Destination buffer (must not be NULL)
-	 * @param len Length of dest[] (if zero, false is returned and nothing happens)
-	 * @param src Source string (if NULL, dest will receive a zero-length string and true is returned)
+	 * @param dest Destination buffer
+	 * @param len Length of buffer
+	 * @param src Source string
 	 * @return True on success, false on overflow (buffer will still be 0-terminated)
 	 */
-	static bool scopy(char *dest,unsigned int len,const char *src);
+	static inline bool scopy(char *dest,unsigned int len,const char *src)
+		throw()
+	{
+		if (!len)
+			return false; // sanity check
+		char *end = dest + len;
+		while ((*dest++ = *src++)) {
+			if (dest == end) {
+				*(--dest) = (char)0;
+				return false;
+			}
+		}
+		return true;
+	}
 
 	/**
 	 * Variant of snprintf that is portable and throws an exception
@@ -258,6 +269,7 @@ public:
 	 * @return Number of bits set in this integer (0-32)
 	 */
 	static inline uint32_t countBits(uint32_t v)
+		throw()
 	{
 		v = v - ((v >> 1) & (uint32_t)0x55555555);
 		v = (v & (uint32_t)0x33333333) + ((v >> 2) & (uint32_t)0x33333333);
@@ -272,6 +284,7 @@ public:
 	 * @return True if memory is all zero
 	 */
 	static inline bool isZero(const void *p,unsigned int len)
+		throw()
 	{
 		for(unsigned int i=0;i<len;++i) {
 			if (((const unsigned char *)p)[i])