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/*
* $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/impl/cookie/RFC2965PortAttributeHandler.java $
* $Revision: 590695 $
* $Date: 2007-10-31 07:55:41 -0700 (Wed, 31 Oct 2007) $
*
* ====================================================================
* 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.StringTokenizer;
import org.apache.http.cookie.ClientCookie;
import org.apache.http.cookie.Cookie;
import org.apache.http.cookie.CookieAttributeHandler;
import org.apache.http.cookie.CookieOrigin;
import org.apache.http.cookie.MalformedCookieException;
import org.apache.http.cookie.SetCookie;
import org.apache.http.cookie.SetCookie2;
/**
* <tt>"Port"</tt> cookie attribute handler for RFC 2965 cookie spec.
*/
public class RFC2965PortAttributeHandler implements CookieAttributeHandler {
public RFC2965PortAttributeHandler() {
super();
}
/**
* Parses the given Port attribute value (e.g. "8000,8001,8002")
* into an array of ports.
*
* @param portValue port attribute value
* @return parsed array of ports
* @throws MalformedCookieException if there is a problem in
* parsing due to invalid portValue.
*/
private static int[] parsePortAttribute(final String portValue)
throws MalformedCookieException {
StringTokenizer st = new StringTokenizer(portValue, ",");
int[] ports = new int[st.countTokens()];
try {
int i = 0;
while(st.hasMoreTokens()) {
ports[i] = Integer.parseInt(st.nextToken().trim());
if (ports[i] < 0) {
throw new MalformedCookieException ("Invalid Port attribute.");
}
++i;
}
} catch (NumberFormatException e) {
throw new MalformedCookieException ("Invalid Port "
+ "attribute: " + e.getMessage());
}
return ports;
}
/**
* Returns <tt>true</tt> if the given port exists in the given
* ports list.
*
* @param port port of host where cookie was received from or being sent to.
* @param ports port list
* @return true returns <tt>true</tt> if the given port exists in
* the given ports list; <tt>false</tt> otherwise.
*/
private static boolean portMatch(int port, int[] ports) {
boolean portInList = false;
for (int i = 0, len = ports.length; i < len; i++) {
if (port == ports[i]) {
portInList = true;
break;
}
}
return portInList;
}
/**
* Parse cookie port attribute.
*/
public void parse(final SetCookie cookie, final String portValue)
throws MalformedCookieException {
if (cookie == null) {
throw new IllegalArgumentException("Cookie may not be null");
}
if (cookie instanceof SetCookie2) {
SetCookie2 cookie2 = (SetCookie2) cookie;
if (portValue != null && portValue.trim().length() > 0) {
int[] ports = parsePortAttribute(portValue);
cookie2.setPorts(ports);
}
}
}
/**
* Validate cookie port attribute. If the Port attribute was specified
* in header, the request port must be in cookie's port list.
*/
public void validate(final Cookie cookie, final CookieOrigin origin)
throws MalformedCookieException {
if (cookie == null) {
throw new IllegalArgumentException("Cookie may not be null");
}
if (origin == null) {
throw new IllegalArgumentException("Cookie origin may not be null");
}
int port = origin.getPort();
if (cookie instanceof ClientCookie
&& ((ClientCookie) cookie).containsAttribute(ClientCookie.PORT_ATTR)) {
if (!portMatch(port, cookie.getPorts())) {
throw new MalformedCookieException(
"Port attribute violates RFC 2965: "
+ "Request port not found in cookie's port list.");
}
}
}
/**
* Match cookie port attribute. If the Port attribute is not specified
* in header, the cookie can be sent to any port. Otherwise, the request port
* must be in the cookie's port list.
*/
public boolean match(final Cookie cookie, final CookieOrigin origin) {
if (cookie == null) {
throw new IllegalArgumentException("Cookie may not be null");
}
if (origin == null) {
throw new IllegalArgumentException("Cookie origin may not be null");
}
int port = origin.getPort();
if (cookie instanceof ClientCookie
&& ((ClientCookie) cookie).containsAttribute(ClientCookie.PORT_ATTR)) {
if (cookie.getPorts() == null) {
// Invalid cookie state: port not specified
return false;
}
if (!portMatch(port, cookie.getPorts())) {
return false;
}
}
return true;
}
}
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