person/Benutzer_model.php: generated alias string is sanitized (special characters, spaces,...)

application/models/person/Benutzer_model.php

@@ -59,7 +59,7 @@ class Benutzer_model extends DB_Model
 	}
 
 	/**
-	 * Generates alias for a uid
+	 * Generates alias for a uid.
 	 * @param $uid
 	 * @return array the alias
 	 */
@@ -73,7 +73,7 @@ class Benutzer_model extends DB_Model
 		if (hasData($nameresult))
 		{
 			$aliasdata = getData($nameresult);
-			$alias = mb_strtolower($aliasdata[0]->vorname).'.'.mb_strtolower($aliasdata[0]->nachname);
+			$alias = $this->_sanitizeAliasName($aliasdata[0]->vorname).'.'.$this->_sanitizeAliasName($aliasdata[0]->nachname);
 			$aliasexists = $this->aliasExists($alias);
 
 			if (hasData($aliasexists) && !getData($aliasexists)[0])
@@ -82,4 +82,48 @@ class Benutzer_model extends DB_Model
 		}
 		return success($aliasres);
 	}
+
+	// --------------------------------------------------------------------------------------------
+	// Private methods
+
+	/**
+	 * Sanitizes a string used for alias. Replaces special characters, spaces, upper case.
+	 * @param string $str
+	 * @return string
+	 */
+	private function _sanitizeAliasName($str)
+	{
+		$enc = 'UTF-8';
+
+		$acentos = array(
+			'A' => '/À|Á|Â|Ã|Å/',
+			'Ae' => '/Ä/',
+			'a' => '/à|á|â|ã|å/',
+			'ae'=> '/ä/',
+			'C' => '/Ç/',
+			'c' => '/ç/',
+			'E' => '/È|É|Ê|Ë/',
+			'e' => '/è|é|ê|ë/',
+			'I' => '/Ì|Í|Î|Ï/',
+			'i' => '/ì|í|î|ï/',
+			'N' => '/Ñ/',
+			'n' => '/ñ/',
+			'O' => '/Ò|Ó|Ô|Õ/',
+			'Oe' => '/Ö/',
+			'o' => '/ò|ó|ô|õ/',
+			'oe' => '/ö/',
+			'U' => '/Ù|Ú|Û/',
+			'Ue' => '/Ü/',
+			'u' => '/ù|ú|û/',
+			'ue' => '/ü/',
+			'Y' => '/Ý/',
+			'y' => '/ý|ÿ/',
+			'a.' => '/ª/',
+			'o.' => '/º/',
+			'ss' => '/ß/',
+		);
+
+		$str = preg_replace($acentos, array_keys($acentos), htmlentities($str,ENT_NOQUOTES, $enc));
+		return mb_strtolower(str_replace(' ','_', $str));
+	}
 }