Index: branches/5.3.x/core/units/helpers/user_helper.php
===================================================================
diff -u -N -r15483 -r15649
--- branches/5.3.x/core/units/helpers/user_helper.php	(.../user_helper.php)	(revision 15483)
+++ branches/5.3.x/core/units/helpers/user_helper.php	(.../user_helper.php)	(revision 15649)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: user_helper.php 15410 2012-06-15 12:45:22Z alex $
+* @version	$Id: user_helper.php 15649 2012-12-12 09:40:30Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -631,4 +631,74 @@
 
 			return $object->Update() ? '' : 'restore_impossible';
 		}
-	}
+
+		/**
+		 * Generates random string
+		 *
+		 * @param int $length
+		 * @param bool $special_chars
+		 * @param bool $extra_special_chars
+		 * @return string
+		 * @access public
+		 */
+		public function generateRandomString($length = 12, $special_chars = true, $extra_special_chars = false)
+		{
+			$chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
+
+			if ( $special_chars ) {
+				$chars .= '!@#$%^&*()';
+			}
+
+			if ( $extra_special_chars ) {
+				$chars .= '-_ []{}<>~`+=,.;:/?|';
+			}
+
+			$password = '';
+
+			for ($i = 0; $i < $length; $i++) {
+				$password .= substr($chars, $this->_generateRandomNumber(0, strlen($chars) - 1), 1);
+			}
+
+			return $password;
+		}
+
+		/**
+		 * Generates a random number
+		 *
+		 * @param int $min Lower limit for the generated number (optional, default is 0)
+		 * @param int $max Upper limit for the generated number (optional, default is 4294967295)
+		 * @return int A random number between min and max
+		 * @access protected
+		 */
+		protected function _generateRandomNumber($min = 0, $max = 0)
+		{
+			static $rnd_value = '';
+
+			// Reset $rnd_value after 14 uses
+			// 32(md5) + 40(sha1) + 40(sha1) / 8 = 14 random numbers from $rnd_value
+			if ( strlen($rnd_value) < 8 ) {
+				$random_seed = $this->Application->getDBCache('random_seed');
+				$rnd_value = md5(uniqid(microtime() . mt_rand(), true) . $random_seed);
+				$rnd_value .= sha1($rnd_value);
+				$rnd_value .= sha1($rnd_value . $random_seed);
+				$random_seed = md5($random_seed . $rnd_value);
+				$this->Application->setDBCache('random_seed', $random_seed);
+			}
+
+			// Take the first 8 digits for our value
+			$value = substr($rnd_value, 0, 8);
+
+			// Strip the first eight, leaving the remainder for the next call to wp_rand().
+			$rnd_value = substr($rnd_value, 8);
+
+			$value = abs(hexdec($value));
+
+			// Reduce the value to be within the min - max range
+			// 4294967295 = 0xffffffff = max random number
+			if ( $max != 0 ) {
+				$value = $min + (($max - $min + 1) * ($value / (4294967295 + 1)));
+			}
+
+			return abs(intval($value));
+		}
+	}
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