/*
* $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/impl/cookie/BrowserCompatSpec.java $
* $Revision: 657334 $
* $Date: 2008-05-17 04:44:16 -0700 (Sat, 17 May 2008) $
*
* ====================================================================
* 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.http.impl.cookie;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import org.apache.http.FormattedHeader;
import org.apache.http.Header;
import org.apache.http.HeaderElement;
import org.apache.http.cookie.ClientCookie;
import org.apache.http.cookie.Cookie;
import org.apache.http.cookie.CookieOrigin;
import org.apache.http.cookie.MalformedCookieException;
import org.apache.http.cookie.SM;
import org.apache.http.message.BufferedHeader;
import org.apache.http.message.ParserCursor;
import org.apache.http.util.CharArrayBuffer;
/**
* Cookie specification that strives to closely mimic (mis)behavior of
* common web browser applications such as Microsoft Internet Explorer
* and Mozilla FireFox.
*
* @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
*
* @since 4.0
*/
public class BrowserCompatSpec extends CookieSpecBase {
/** Valid date patterns used per default */
protected static final String[] DATE_PATTERNS = new String[] {
DateUtils.PATTERN_RFC1123,
DateUtils.PATTERN_RFC1036,
DateUtils.PATTERN_ASCTIME,
"EEE, dd-MMM-yyyy HH:mm:ss z",
"EEE, dd-MMM-yyyy HH-mm-ss z",
"EEE, dd MMM yy HH:mm:ss z",
"EEE dd-MMM-yyyy HH:mm:ss z",
"EEE dd MMM yyyy HH:mm:ss z",
"EEE dd-MMM-yyyy HH-mm-ss z",
"EEE dd-MMM-yy HH:mm:ss z",
"EEE dd MMM yy HH:mm:ss z",
"EEE,dd-MMM-yy HH:mm:ss z",
"EEE,dd-MMM-yyyy HH:mm:ss z",
"EEE, dd-MM-yyyy HH:mm:ss z",
};
private final String[] datepatterns;
/** Default constructor */
public BrowserCompatSpec(final String[] datepatterns) {
super();
if (datepatterns != null) {
this.datepatterns = datepatterns.clone();
} else {
this.datepatterns = DATE_PATTERNS;
}
registerAttribHandler(ClientCookie.PATH_ATTR, new BasicPathHandler());
registerAttribHandler(ClientCookie.DOMAIN_ATTR, new BasicDomainHandler());
registerAttribHandler(ClientCookie.MAX_AGE_ATTR, new BasicMaxAgeHandler());
registerAttribHandler(ClientCookie.SECURE_ATTR, new BasicSecureHandler());
registerAttribHandler(ClientCookie.COMMENT_ATTR, new BasicCommentHandler());
registerAttribHandler(ClientCookie.EXPIRES_ATTR, new BasicExpiresHandler(
this.datepatterns));
}
/** Default constructor */
public BrowserCompatSpec() {
this(null);
}
public List<Cookie> parse(final Header header, final CookieOrigin origin)
throws MalformedCookieException {
if (header == null) {
throw new IllegalArgumentException("Header may not be null");
}
if (origin == null) {
throw new IllegalArgumentException("Cookie origin may not be null");
}
String headervalue = header.getValue();
boolean isNetscapeCookie = false;
int i1 = headervalue.toLowerCase(Locale.ENGLISH).indexOf("expires=");
if (i1 != -1) {
i1 += "expires=".length();
int i2 = headervalue.indexOf(';', i1);
if (i2 == -1) {
i2 = headervalue.length();
}
try {
DateUtils.parseDate(headervalue.substring(i1, i2), this.datepatterns);
isNetscapeCookie = true;
} catch (DateParseException e) {
// Does not look like a valid expiry date
}
}
HeaderElement[] elems = null;
if (isNetscapeCookie) {
NetscapeDraftHeaderParser parser = NetscapeDraftHeaderParser.DEFAULT;
CharArrayBuffer buffer;
ParserCursor cursor;
if (header instanceof FormattedHeader) {
buffer = ((FormattedHeader) header).getBuffer();
cursor = new ParserCursor(
((FormattedHeader) header).getValuePos(),
buffer.length());
} else {
String s = header.getValue();
if (s == null) {
throw new MalformedCookieException("Header value is null");
}
buffer = new CharArrayBuffer(s.length());
buffer.append(s);
cursor = new ParserCursor(0, buffer.length());
}
elems = new HeaderElement[] { parser.parseHeader(buffer, cursor) };
} else {
elems = header.getElements();
}
return parse(elems, origin);
}
public List<Header> formatCookies(final List<Cookie> cookies) {
if (cookies == null) {
throw new IllegalArgumentException("List of cookies may not be null");
}
if (cookies.isEmpty()) {
throw new IllegalArgumentException("List of cookies may not be empty");
}
CharArrayBuffer buffer = new CharArrayBuffer(20 * cookies.size());
buffer.append(SM.COOKIE);
buffer.append(": ");
for (int i = 0; i < cookies.size(); i++) {
Cookie cookie = cookies.get(i);
if (i > 0) {
buffer.append("; ");
}
buffer.append(cookie.getName());
buffer.append("=");
String s = cookie.getValue();
if (s != null) {
buffer.append(s);
}
}
List<Header> headers = new ArrayList<Header>(1);
headers.add(new BufferedHeader(buffer));
return headers;
}
public int getVersion() {
return 0;
}
public Header getVersionHeader() {
return null;
}
}