michael@0: /*
michael@0:  * ====================================================================
michael@0:  * Licensed to the Apache Software Foundation (ASF) under one
michael@0:  * or more contributor license agreements.  See the NOTICE file
michael@0:  * distributed with this work for additional information
michael@0:  * regarding copyright ownership.  The ASF licenses this file
michael@0:  * to you under the Apache License, Version 2.0 (the
michael@0:  * "License"); you may not use this file except in compliance
michael@0:  * with the License.  You may obtain a copy of the License at
michael@0:  *
michael@0:  *   http://www.apache.org/licenses/LICENSE-2.0
michael@0:  *
michael@0:  * Unless required by applicable law or agreed to in writing,
michael@0:  * software distributed under the License is distributed on an
michael@0:  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
michael@0:  * KIND, either express or implied.  See the License for the
michael@0:  * specific language governing permissions and limitations
michael@0:  * under the License.
michael@0:  * ====================================================================
michael@0:  *
michael@0:  * This software consists of voluntary contributions made by many
michael@0:  * individuals on behalf of the Apache Software Foundation.  For more
michael@0:  * information on the Apache Software Foundation, please see
michael@0:  * <http://www.apache.org/>.
michael@0:  *
michael@0:  */
michael@0: package ch.boye.httpclientandroidlib.impl.cookie;
michael@0: 
michael@0: import ch.boye.httpclientandroidlib.annotation.Immutable;
michael@0: 
michael@0: import ch.boye.httpclientandroidlib.cookie.Cookie;
michael@0: import ch.boye.httpclientandroidlib.cookie.CookieAttributeHandler;
michael@0: import ch.boye.httpclientandroidlib.cookie.CookieOrigin;
michael@0: import ch.boye.httpclientandroidlib.cookie.CookieRestrictionViolationException;
michael@0: import ch.boye.httpclientandroidlib.cookie.MalformedCookieException;
michael@0: import ch.boye.httpclientandroidlib.cookie.SetCookie;
michael@0: 
michael@0: /**
michael@0:  *
michael@0:  * @since 4.0
michael@0:  */
michael@0: @Immutable
michael@0: public class BasicDomainHandler implements CookieAttributeHandler {
michael@0: 
michael@0:     public BasicDomainHandler() {
michael@0:         super();
michael@0:     }
michael@0: 
michael@0:     public void parse(final SetCookie cookie, final String value)
michael@0:             throws MalformedCookieException {
michael@0:         if (cookie == null) {
michael@0:             throw new IllegalArgumentException("Cookie may not be null");
michael@0:         }
michael@0:         if (value == null) {
michael@0:             throw new MalformedCookieException("Missing value for domain attribute");
michael@0:         }
michael@0:         if (value.trim().length() == 0) {
michael@0:             throw new MalformedCookieException("Blank value for domain attribute");
michael@0:         }
michael@0:         cookie.setDomain(value);
michael@0:     }
michael@0: 
michael@0:     public void validate(final Cookie cookie, final CookieOrigin origin)
michael@0:             throws MalformedCookieException {
michael@0:         if (cookie == null) {
michael@0:             throw new IllegalArgumentException("Cookie may not be null");
michael@0:         }
michael@0:         if (origin == null) {
michael@0:             throw new IllegalArgumentException("Cookie origin may not be null");
michael@0:         }
michael@0:         // Validate the cookies domain attribute.  NOTE:  Domains without
michael@0:         // any dots are allowed to support hosts on private LANs that don't
michael@0:         // have DNS names.  Since they have no dots, to domain-match the
michael@0:         // request-host and domain must be identical for the cookie to sent
michael@0:         // back to the origin-server.
michael@0:         String host = origin.getHost();
michael@0:         String domain = cookie.getDomain();
michael@0:         if (domain == null) {
michael@0:             throw new CookieRestrictionViolationException("Cookie domain may not be null");
michael@0:         }
michael@0:         if (host.contains(".")) {
michael@0:             // Not required to have at least two dots.  RFC 2965.
michael@0:             // A Set-Cookie2 with Domain=ajax.com will be accepted.
michael@0: 
michael@0:             // domain must match host
michael@0:             if (!host.endsWith(domain)) {
michael@0:                 if (domain.startsWith(".")) {
michael@0:                     domain = domain.substring(1, domain.length());
michael@0:                 }
michael@0:                 if (!host.equals(domain)) {
michael@0:                     throw new CookieRestrictionViolationException(
michael@0:                         "Illegal domain attribute \"" + domain
michael@0:                         + "\". Domain of origin: \"" + host + "\"");
michael@0:                 }
michael@0:             }
michael@0:         } else {
michael@0:             if (!host.equals(domain)) {
michael@0:                 throw new CookieRestrictionViolationException(
michael@0:                     "Illegal domain attribute \"" + domain
michael@0:                     + "\". Domain of origin: \"" + host + "\"");
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     public boolean match(final Cookie cookie, final CookieOrigin origin) {
michael@0:         if (cookie == null) {
michael@0:             throw new IllegalArgumentException("Cookie may not be null");
michael@0:         }
michael@0:         if (origin == null) {
michael@0:             throw new IllegalArgumentException("Cookie origin may not be null");
michael@0:         }
michael@0:         String host = origin.getHost();
michael@0:         String domain = cookie.getDomain();
michael@0:         if (domain == null) {
michael@0:             return false;
michael@0:         }
michael@0:         if (host.equals(domain)) {
michael@0:             return true;
michael@0:         }
michael@0:         if (!domain.startsWith(".")) {
michael@0:             domain = '.' + domain;
michael@0:         }
michael@0:         return host.endsWith(domain) || host.equals(domain.substring(1));
michael@0:     }
michael@0: 
michael@0: }