| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.validator; |
| |
| import org.apache.commons.validator.routines.InetAddressValidator; |
| |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * <p>Perform email validations.</p> |
| * <p> |
| * This class is a Singleton; you can retrieve the instance via the getInstance() method. |
| * </p> |
| * <p> |
| * Based on a script by <a href="mailto:stamhankar@hotmail.com">Sandeep V. Tamhankar</a> |
| * http://javascript.internet.com |
| * </p> |
| * <p> |
| * This implementation is not guaranteed to catch all possible errors in an email address. |
| * For example, an address like nobody@noplace.somedog will pass validator, even though there |
| * is no TLD "somedog" |
| * </p>. |
| * |
| * @version $Revision$ |
| * @since Validator 1.1 |
| * @deprecated Use the new EmailValidator in the routines package. This class |
| * will be removed in a future release. |
| */ |
| @Deprecated |
| public class EmailValidator { |
| |
| private static final String SPECIAL_CHARS = "\\p{Cntrl}\\(\\)<>@,;:'\\\\\\\"\\.\\[\\]"; |
| private static final String VALID_CHARS = "[^\\s" + SPECIAL_CHARS + "]"; |
| private static final String QUOTED_USER = "(\"[^\"]*\")"; |
| private static final String ATOM = VALID_CHARS + '+'; |
| private static final String WORD = "((" + VALID_CHARS + "|')+|" + QUOTED_USER + ")"; |
| |
| // NOT USED private static final Pattern LEGAL_ASCII_PATTERN = Pattern.compile("^\\p{ASCII}+$"); |
| // NOT USED private static final Pattern EMAIL_PATTERN = Pattern.compile("^(.+)@(.+)$"); |
| private static final Pattern IP_DOMAIN_PATTERN = Pattern.compile("^\\[(.*)\\]$"); |
| private static final Pattern TLD_PATTERN = Pattern.compile("^([a-zA-Z]+)$"); |
| |
| private static final Pattern USER_PATTERN = Pattern.compile("^\\s*" + WORD + "(\\." + WORD + ")*$"); |
| private static final Pattern DOMAIN_PATTERN = Pattern.compile("^" + ATOM + "(\\." + ATOM + ")*\\s*$"); |
| private static final Pattern ATOM_PATTERN = Pattern.compile("(" + ATOM + ")"); |
| |
| /** |
| * Singleton instance of this class. |
| */ |
| private static final EmailValidator EMAIL_VALIDATOR = new EmailValidator(); |
| |
| /** |
| * Returns the Singleton instance of this validator. |
| * @return singleton instance of this validator. |
| */ |
| public static EmailValidator getInstance() { |
| return EMAIL_VALIDATOR; |
| } |
| |
| /** |
| * Protected constructor for subclasses to use. |
| */ |
| protected EmailValidator() { |
| } |
| |
| /** |
| * <p>Checks if a field has a valid e-mail address.</p> |
| * |
| * @param email The value validation is being performed on. A <code>null</code> |
| * value is considered invalid. |
| * @return true if the email address is valid. |
| */ |
| public boolean isValid(String email) { |
| return org.apache.commons.validator.routines.EmailValidator.getInstance().isValid(email); |
| } |
| |
| /** |
| * Returns true if the domain component of an email address is valid. |
| * @param domain being validated. |
| * @return true if the email address's domain is valid. |
| */ |
| protected boolean isValidDomain(String domain) { |
| boolean symbolic = false; |
| |
| // see if domain is an IP address in brackets |
| Matcher ipDomainMatcher = IP_DOMAIN_PATTERN.matcher(domain); |
| |
| if (ipDomainMatcher.matches()) { |
| InetAddressValidator inetAddressValidator = |
| InetAddressValidator.getInstance(); |
| if (inetAddressValidator.isValid(ipDomainMatcher.group(1))) { |
| return true; |
| } |
| } else { |
| // Domain is symbolic name |
| symbolic = DOMAIN_PATTERN.matcher(domain).matches(); |
| } |
| |
| if (symbolic) { |
| if (!isValidSymbolicDomain(domain)) { |
| return false; |
| } |
| } else { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /** |
| * Returns true if the user component of an email address is valid. |
| * @param user being validated |
| * @return true if the user name is valid. |
| */ |
| protected boolean isValidUser(String user) { |
| return USER_PATTERN.matcher(user).matches(); |
| } |
| |
| /** |
| * Validates an IP address. Returns true if valid. |
| * @param ipAddress IP address |
| * @return true if the ip address is valid. |
| */ |
| protected boolean isValidIpAddress(String ipAddress) { |
| Matcher ipAddressMatcher = IP_DOMAIN_PATTERN.matcher(ipAddress); |
| for (int i = 1; i <= 4; i++) { // CHECKSTYLE IGNORE MagicNumber |
| String ipSegment = ipAddressMatcher.group(i); |
| if (ipSegment == null || ipSegment.isEmpty()) { |
| return false; |
| } |
| |
| int iIpSegment = 0; |
| |
| try { |
| iIpSegment = Integer.parseInt(ipSegment); |
| } catch(NumberFormatException e) { |
| return false; |
| } |
| |
| if (iIpSegment > 255) { // CHECKSTYLE IGNORE MagicNumber |
| return false; |
| } |
| |
| } |
| return true; |
| } |
| |
| /** |
| * Validates a symbolic domain name. Returns true if it's valid. |
| * @param domain symbolic domain name |
| * @return true if the symbolic domain name is valid. |
| */ |
| protected boolean isValidSymbolicDomain(String domain) { |
| String[] domainSegment = new String[10]; // CHECKSTYLE IGNORE MagicNumber |
| boolean match = true; |
| int i = 0; |
| Matcher atomMatcher = ATOM_PATTERN.matcher(domain); |
| while (match) { |
| match = atomMatcher.matches(); |
| if (match) { |
| domainSegment[i] = atomMatcher.group(1); |
| int l = domainSegment[i].length() + 1; |
| domain = |
| (l >= domain.length()) |
| ? "" |
| : domain.substring(l); |
| |
| i++; |
| } |
| } |
| |
| int len = i; |
| |
| // Make sure there's a host name preceding the domain. |
| if (len < 2) { |
| return false; |
| } |
| |
| String tld = domainSegment[len - 1]; |
| if (tld.length() > 1) { |
| if (! TLD_PATTERN.matcher(tld).matches()) { |
| return false; |
| } |
| } else { |
| return false; |
| } |
| |
| return true; |
| } |
| /** |
| * Recursively remove comments, and replace with a single space. The simpler |
| * regexps in the Email Addressing FAQ are imperfect - they will miss escaped |
| * chars in atoms, for example. |
| * Derived From Mail::RFC822::Address |
| * @param emailStr The email address |
| * @return address with comments removed. |
| */ |
| protected String stripComments(String emailStr) { |
| String result = emailStr; |
| String commentPat = "^((?:[^\"\\\\]|\\\\.)*(?:\"(?:[^\"\\\\]|\\\\.)*\"(?:[^\"\\\\]|\111111\\\\.)*)*)\\((?:[^()\\\\]|\\\\.)*\\)/"; |
| Pattern commentMatcher = Pattern.compile(commentPat); |
| |
| while (commentMatcher.matcher(result).matches()) { |
| result = result.replaceFirst(commentPat, "\1 "); |
| } |
| return result; |
| } |
| } |