password and username validator utils

utils/src/com/cloud/utils/UsernamePasswordValidator.java

@@ -0,0 +1,48 @@
+/**
+ *  Copyright (C) 2010 Cloud.com, Inc.  All rights reserved.
+ * 
+ * This software is licensed under the GNU General Public License v3 or later.
+ * 
+ * It 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 any later version.
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ */
+package com.cloud.utils;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class UsernamePasswordValidator {
+	private Pattern usernamePattern;
+	private Pattern passwordPattern;
+	private Matcher matcher;
+
+	private static final String USERNAME_PATTERN = "^[a-zA-Z0-9][a-zA-Z0-9@._-]{2,63}$";
+	private static final String PASSWORD_PATTERN = "^[a-zA-Z0-9][a-zA-Z0-9@#+=._-]{2,31}$";
+
+
+	public UsernamePasswordValidator(){
+		usernamePattern = Pattern.compile(USERNAME_PATTERN);
+		passwordPattern = Pattern.compile(PASSWORD_PATTERN);
+
+	}
+
+	public boolean validateUsername(final String username){
+		matcher = usernamePattern.matcher(username);
+		return matcher.matches();
+	}
+
+	public boolean validatePassword(final String password){
+		matcher = passwordPattern.matcher(password);
+		return matcher.matches();
+	}
+
+}