/* * $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//httpclient/src/java/org/apache/commons/httpclient/cookie/CookieSpecBase.java,v 1.28 2004/11/06 19:15:42 mbecke Exp $ * $Revision: 480424 $ * $Date: 2006-11-29 06:56:49 +0100 (Wed, 29 Nov 2006) $ * * ==================================================================== * *  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. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation.  For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * */ package org.apache.commons.httpclient.cookie;import java.util.Collection;import java.util.Date;import java.util.LinkedList;import java.util.List;import org.apache.commons.httpclient.Cookie;import org.apache.commons.httpclient.Header;import org.apache.commons.httpclient.HeaderElement;import org.apache.commons.httpclient.NameValuePair;import org.apache.commons.httpclient.util.DateParseException;import org.apache.commons.httpclient.util.DateUtil;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;/** *  * Cookie management functions shared by all specification. * * @author  B.C. Holmes * @author <a href="mailto:jericho@thinkfree.com">Park, Sung-Gu</a> * @author <a href="mailto:dsale@us.britannica.com">Doug Sale</a> * @author Rod Waldhoff * @author dIon Gillard * @author Sean C. Sullivan * @author <a href="mailto:JEvans@Cyveillance.com">John Evans</a> * @author Marc A. Saegesser * @author <a href="mailto:oleg@ural.ru">Oleg Kalnichevski</a> * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a> *  * @since 2.0  */public class CookieSpecBase implements CookieSpec {        /** Log object */    protected static final Log LOG = LogFactory.getLog(CookieSpec.class);    /** Valid date patterns */    private Collection datepatterns = null;        /** Default constructor */    public CookieSpecBase() {        super();    }    /**      * Parses the Set-Cookie value into an array of <tt>Cookie</tt>s.      *      * <P>The syntax for the Set-Cookie response header is:      *      * <PRE>      * set-cookie      =    "Set-Cookie:" cookies      * cookies         =    1#cookie      * cookie          =    NAME "=" VALUE * (";" cookie-av)      * NAME            =    attr      * VALUE           =    value      * cookie-av       =    "Comment" "=" value      *                 |    "Domain" "=" value      *                 |    "Max-Age" "=" value      *                 |    "Path" "=" value      *                 |    "Secure"      *                 |    "Version" "=" 1*DIGIT      * </PRE>      *      * @param host the host from which the <tt>Set-Cookie</tt> value was      * received      * @param port the port from which the <tt>Set-Cookie</tt> value was      * received      * @param path the path from which the <tt>Set-Cookie</tt> value was      * received      * @param secure <tt>true</tt> when the <tt>Set-Cookie</tt> value was      * received over secure conection      * @param header the <tt>Set-Cookie</tt> received from the server      * @return an array of <tt>Cookie</tt>s parsed from the Set-Cookie value      * @throws MalformedCookieException if an exception occurs during parsing      */    public Cookie[] parse(String host, int port, String path,         boolean secure, final String header)         throws MalformedCookieException {                    LOG.trace("enter CookieSpecBase.parse("             + "String, port, path, boolean, Header)");        if (host == null) {            throw new IllegalArgumentException(                "Host of origin may not be null");        }        if (host.trim().equals("")) {            throw new IllegalArgumentException(                "Host of origin may not be blank");        }        if (port < 0) {            throw new IllegalArgumentException("Invalid port: " + port);        }        if (path == null) {            throw new IllegalArgumentException(                "Path of origin may not be null.");        }        if (header == null) {            throw new IllegalArgumentException("Header may not be null.");        }        if (path.trim().equals("")) {            path = PATH_DELIM;        }        host = host.toLowerCase();        String defaultPath = path;            int lastSlashIndex = defaultPath.lastIndexOf(PATH_DELIM);        if (lastSlashIndex >= 0) {            if (lastSlashIndex == 0) {                //Do not remove the very first slash                lastSlashIndex = 1;            }            defaultPath = defaultPath.substring(0, lastSlashIndex);        }        HeaderElement[] headerElements = null;        boolean isNetscapeCookie = false;         int i1 = header.toLowerCase().indexOf("expires=");        if (i1 != -1) {            i1 += "expires=".length();            int i2 = header.indexOf(";", i1);            if (i2 == -1) {                i2 = header.length();             }            try {                DateUtil.parseDate(header.substring(i1, i2), this.datepatterns);                isNetscapeCookie = true;             } catch (DateParseException e) {                // Does not look like a valid expiry date            }        }        if (isNetscapeCookie) {            headerElements = new HeaderElement[] {                    new HeaderElement(header.toCharArray())            };        } else {            headerElements = HeaderElement.parseElements(header.toCharArray());        }                Cookie[] cookies = new Cookie[headerElements.length];        for (int i = 0; i < headerElements.length; i++) {            HeaderElement headerelement = headerElements[i];            Cookie cookie = null;            try {                cookie = new Cookie(host,                                    headerelement.getName(),                                    headerelement.getValue(),                                    defaultPath,                                     null,                                    false);            } catch (IllegalArgumentException e) {                throw new MalformedCookieException(e.getMessage());             }            // cycle through the parameters            NameValuePair[] parameters = headerelement.getParameters();            // could be null. In case only a header element and no parameters.            if (parameters != null) {                for (int j = 0; j < parameters.length; j++) {                    parseAttribute(parameters[j], cookie);                }            }            cookies[i] = cookie;        }        return cookies;    }    /**      * Parse the <tt>"Set-Cookie"</tt> {@link Header} into an array of {@link      * Cookie}s.      *      * <P>The syntax for the Set-Cookie response header is:      *      * <PRE>      * set-cookie      =    "Set-Cookie:" cookies      * cookies         =    1#cookie      * cookie          =    NAME "=" VALUE * (";" cookie-av)      * NAME            =    attr      * VALUE           =    value      * cookie-av       =    "Comment" "=" value      *                 |    "Domain" "=" value      *                 |    "Max-Age" "=" value      *                 |    "Path" "=" value      *                 |    "Secure"      *                 |    "Version" "=" 1*DIGIT      * </PRE>      *      * @param host the host from which the <tt>Set-Cookie</tt> header was      * received      * @param port the port from which the <tt>Set-Cookie</tt> header was      * received      * @param path the path from which the <tt>Set-Cookie</tt> header was      * received      * @param secure <tt>true</tt> when the <tt>Set-Cookie</tt> header was      * received over secure conection      * @param header the <tt>Set-Cookie</tt> received from the server      * @return an array of <tt>Cookie</tt>s parsed from the <tt>"Set-Cookie"      * </tt> header      * @throws MalformedCookieException if an exception occurs during parsing      */    public Cookie[] parse(        String host, int port, String path, boolean secure, final Header header)        throws MalformedCookieException {                    LOG.trace("enter CookieSpecBase.parse("            + "String, port, path, boolean, String)");        if (header == null) {            throw new IllegalArgumentException("Header may not be null.");        }        return parse(host, port, path, secure, header.getValue());    }    /**      * Parse the cookie attribute and update the corresponsing {@link Cookie}      * properties.      *      * @param attribute {@link HeaderElement} cookie attribute from the      * <tt>Set- Cookie</tt>      * @param cookie {@link Cookie} to be updated      * @throws MalformedCookieException if an exception occurs during parsing      */    public void parseAttribute(        final NameValuePair attribute, final Cookie cookie)        throws MalformedCookieException {                    if (attribute == null) {            throw new IllegalArgumentException("Attribute may not be null.");        }        if (cookie == null) {            throw new IllegalArgumentException("Cookie may not be null.");        }        final String paramName = attribute.getName().toLowerCase();        String paramValue = attribute.getValue();        if (paramName.equals("path")) {            if ((paramValue == null) || (paramValue.trim().equals(""))) {                paramValue = "/";            }            cookie.setPath(paramValue);            cookie.setPathAttributeSpecified(true);        } else if (paramName.equals("domain")) {            if (paramValue == null) {                throw new MalformedCookieException(                    "Missing value for domain attribute");            }            if (paramValue.trim().equals("")) {                throw new MalformedCookieException(                    "Blank value for domain attribute");            }            cookie.setDomain(paramValue);            cookie.setDomainAttributeSpecified(true);        } else if (paramName.equals("max-age")) {            if (paramValue == null) {                throw new MalformedCookieException(                    "Missing value for max-age attribute");            }            int age;            try {                age = Integer.parseInt(paramValue);            } catch (NumberFormatException e) {                throw new MalformedCookieException ("Invalid max-age "                    + "attribute: " + e.getMessage());            }            cookie.setExpiryDate(                new Date(System.currentTimeMillis() + age * 1000L));        } else if (paramName.equals("secure")) {            cookie.setSecure(true);        } else if (paramName.equals("comment")) {            cookie.setComment(paramValue);        } else if (paramName.equals("expires")) {            if (paramValue == null) {                throw new MalformedCookieException(                    "Missing value for expires attribute");            }            try {                cookie.setExpiryDate(DateUtil.parseDate(paramValue, this.datepatterns));            } catch (DateParseException dpe) {                LOG.debug("Error parsing cookie date", dpe);