001/*
002 * ====================================================================
003 * Licensed to the Apache Software Foundation (ASF) under one
004 * or more contributor license agreements.  See the NOTICE file
005 * distributed with this work for additional information
006 * regarding copyright ownership.  The ASF licenses this file
007 * to you under the Apache License, Version 2.0 (the
008 * "License"); you may not use this file except in compliance
009 * with the License.  You may obtain a copy of the License at
010 *
011 *   http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing,
014 * software distributed under the License is distributed on an
015 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
016 * KIND, either express or implied.  See the License for the
017 * specific language governing permissions and limitations
018 * under the License.
019 * ====================================================================
020 *
021 * This software consists of voluntary contributions made by many
022 * individuals on behalf of the Apache Software Foundation.  For more
023 * information on the Apache Software Foundation, please see
024 * <http://www.apache.org/>.
025 *
026 */
027package org.apache.http.impl.cookie;
028
029import org.apache.http.annotation.Contract;
030import org.apache.http.annotation.ThreadingBehavior;
031import org.apache.http.cookie.ClientCookie;
032import org.apache.http.cookie.CommonCookieAttributeHandler;
033import org.apache.http.cookie.Cookie;
034import org.apache.http.cookie.CookieOrigin;
035import org.apache.http.cookie.CookieRestrictionViolationException;
036import org.apache.http.cookie.MalformedCookieException;
037import org.apache.http.cookie.SetCookie;
038import org.apache.http.util.Args;
039
040/**
041 *
042 * @since 4.0
043 */
044@Contract(threading = ThreadingBehavior.IMMUTABLE)
045public class RFC2109VersionHandler extends AbstractCookieAttributeHandler implements CommonCookieAttributeHandler {
046
047    public RFC2109VersionHandler() {
048        super();
049    }
050
051    @Override
052    public void parse(final SetCookie cookie, final String value)
053            throws MalformedCookieException {
054        Args.notNull(cookie, "Cookie");
055        if (value == null) {
056            throw new MalformedCookieException("Missing value for version attribute");
057        }
058        if (value.trim().isEmpty()) {
059            throw new MalformedCookieException("Blank value for version attribute");
060        }
061        try {
062           cookie.setVersion(Integer.parseInt(value));
063        } catch (final NumberFormatException e) {
064            throw new MalformedCookieException("Invalid version: "
065                + e.getMessage());
066        }
067    }
068
069    @Override
070    public void validate(final Cookie cookie, final CookieOrigin origin)
071            throws MalformedCookieException {
072        Args.notNull(cookie, "Cookie");
073        if (cookie.getVersion() < 0) {
074            throw new CookieRestrictionViolationException("Cookie version may not be negative");
075        }
076    }
077
078    @Override
079    public String getAttributeName() {
080        return ClientCookie.VERSION_ATTR;
081    }
082
083}