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/*
* ====================================================================
* 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 ch.boye.httpclientandroidlib.impl.cookie;
import java.util.ArrayList;
import java.util.List;
import ch.boye.httpclientandroidlib.FormattedHeader;
import ch.boye.httpclientandroidlib.Header;
import ch.boye.httpclientandroidlib.HeaderElement;
import ch.boye.httpclientandroidlib.annotation.NotThreadSafe;
import ch.boye.httpclientandroidlib.client.utils.DateUtils;
import ch.boye.httpclientandroidlib.cookie.ClientCookie;
import ch.boye.httpclientandroidlib.cookie.Cookie;
import ch.boye.httpclientandroidlib.cookie.CookieOrigin;
import ch.boye.httpclientandroidlib.cookie.MalformedCookieException;
import ch.boye.httpclientandroidlib.cookie.SM;
import ch.boye.httpclientandroidlib.message.BasicHeaderElement;
import ch.boye.httpclientandroidlib.message.BasicHeaderValueFormatter;
import ch.boye.httpclientandroidlib.message.BufferedHeader;
import ch.boye.httpclientandroidlib.message.ParserCursor;
import ch.boye.httpclientandroidlib.util.Args;
import ch.boye.httpclientandroidlib.util.CharArrayBuffer;
/**
* Cookie specification that strives to closely mimic (mis)behavior of
* common web browser applications such as Microsoft Internet Explorer
* and Mozilla FireFox.
*
*
* @since 4.0
*/
@NotThreadSafe // superclass is @NotThreadSafe
public class BrowserCompatSpec extends CookieSpecBase {
private static final String[] DEFAULT_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, final BrowserCompatSpecFactory.SecurityLevel securityLevel) {
super();
if (datepatterns != null) {
this.datepatterns = datepatterns.clone();
} else {
this.datepatterns = DEFAULT_DATE_PATTERNS;
}
switch (securityLevel) {
case SECURITYLEVEL_DEFAULT:
registerAttribHandler(ClientCookie.PATH_ATTR, new BasicPathHandler());
break;
case SECURITYLEVEL_IE_MEDIUM:
registerAttribHandler(ClientCookie.PATH_ATTR, new BasicPathHandler() {
@Override
public void validate(final Cookie cookie, final CookieOrigin origin) throws MalformedCookieException {
// No validation
}
}
);
break;
default:
throw new RuntimeException("Unknown security level");
}
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));
registerAttribHandler(ClientCookie.VERSION_ATTR, new BrowserCompatVersionAttributeHandler());
}
/** Default constructor */
public BrowserCompatSpec(final String[] datepatterns) {
this(datepatterns, BrowserCompatSpecFactory.SecurityLevel.SECURITYLEVEL_DEFAULT);
}
/** Default constructor */
public BrowserCompatSpec() {
this(null, BrowserCompatSpecFactory.SecurityLevel.SECURITYLEVEL_DEFAULT);
}
public List<Cookie> parse(final Header header, final CookieOrigin origin)
throws MalformedCookieException {
Args.notNull(header, "Header");
Args.notNull(origin, "Cookie origin");
final String headername = header.getName();
if (!headername.equalsIgnoreCase(SM.SET_COOKIE)) {
throw new MalformedCookieException("Unrecognized cookie header '"
+ header.toString() + "'");
}
HeaderElement[] helems = header.getElements();
boolean versioned = false;
boolean netscape = false;
for (final HeaderElement helem: helems) {
if (helem.getParameterByName("version") != null) {
versioned = true;
}
if (helem.getParameterByName("expires") != null) {
netscape = true;
}
}
if (netscape || !versioned) {
// Need to parse the header again, because Netscape style cookies do not correctly
// support multiple header elements (comma cannot be treated as an element separator)
final NetscapeDraftHeaderParser parser = NetscapeDraftHeaderParser.DEFAULT;
final CharArrayBuffer buffer;
final ParserCursor cursor;
if (header instanceof FormattedHeader) {
buffer = ((FormattedHeader) header).getBuffer();
cursor = new ParserCursor(
((FormattedHeader) header).getValuePos(),
buffer.length());
} else {
final 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());
}
helems = new HeaderElement[] { parser.parseHeader(buffer, cursor) };
}
return parse(helems, origin);
}
private static boolean isQuoteEnclosed(final String s) {
return s != null && s.startsWith("\"") && s.endsWith("\"");
}
public List<Header> formatCookies(final List<Cookie> cookies) {
Args.notEmpty(cookies, "List of cookies");
final CharArrayBuffer buffer = new CharArrayBuffer(20 * cookies.size());
buffer.append(SM.COOKIE);
buffer.append(": ");
for (int i = 0; i < cookies.size(); i++) {
final Cookie cookie = cookies.get(i);
if (i > 0) {
buffer.append("; ");
}
final String cookieName = cookie.getName();
final String cookieValue = cookie.getValue();
if (cookie.getVersion() > 0 && !isQuoteEnclosed(cookieValue)) {
BasicHeaderValueFormatter.INSTANCE.formatHeaderElement(
buffer,
new BasicHeaderElement(cookieName, cookieValue),
false);
} else {
// Netscape style cookies do not support quoted values
buffer.append(cookieName);
buffer.append("=");
if (cookieValue != null) {
buffer.append(cookieValue);
}
}
}
final List<Header> headers = new ArrayList<Header>(1);
headers.add(new BufferedHeader(buffer));
return headers;
}
public int getVersion() {
return 0;
}
public Header getVersionHeader() {
return null;
}
@Override
public String toString() {
return "compatibility";
}
}
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