org.xlightweb.client.InMemoryCookieStore Maven / Gradle / Ivy
/*
* Copyright (c) xlightweb.org, 2008. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Please refer to the LGPL license at: http://www.gnu.org/copyleft/lesser.txt
* The latest copy of this software may be found on http://www.xlightweb.org/
*/
package org.xlightweb.client;
import java.lang.ref.WeakReference;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.TimerTask;
import java.util.Map.Entry;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
*
* In memory cookie store
*
* @author [email protected]
*/
final class InMemoryCookieStore {
private static final Logger LOG = Logger.getLogger(InMemoryCookieStore.class.getName());
private static final List> INSTANCE_LIST = Collections.synchronizedList(new ArrayList>());
private static final long CLEANING_PERIOD_MILLIS = 30 * 1000;
static {
TimerTask cleaningTask = new TimerTask() {
@Override
public void run() {
for (InMemoryCookieStore cookieStore : getInstances()) {
cookieStore.clean();
}
}
};
HttpClientConnection.schedule(cleaningTask, CLEANING_PERIOD_MILLIS, CLEANING_PERIOD_MILLIS);
}
private final List cookies = new ArrayList();
private final HashMap> domainIndex = new HashMap>();
private final HashMap> uriIndex = new HashMap>();
private final Object guard = new Object();
/**
* constructor
*/
public InMemoryCookieStore() {
WeakReference cookieStoreRef = new WeakReference(this);
INSTANCE_LIST.add(cookieStoreRef);
}
private static List getInstances() {
List instances = new ArrayList();
boolean isCleanRequired = false;
for (WeakReference cookieStoreRef : INSTANCE_LIST) {
InMemoryCookieStore cookieStore = cookieStoreRef.get();
if (cookieStore != null) {
instances.add(cookieStore);
} else {
isCleanRequired = true;
}
}
if (isCleanRequired) {
cleanInstances();
}
return instances;
}
private static void cleanInstances() {
List> refsToDelete = new ArrayList>();
for (WeakReference cookieStoreRef : INSTANCE_LIST) {
InMemoryCookieStore cookieStore = cookieStoreRef.get();
if (cookieStore == null) {
refsToDelete.add(cookieStoreRef);
}
}
for (WeakReference cookieStoreRef : refsToDelete) {
INSTANCE_LIST.remove(cookieStoreRef);
}
}
/**
* adds a cookie
*
* @param uri the uri
* @param cookie the cookie
*/
public void add(URI uri, Cookie cookie) {
synchronized (guard) {
cookies.remove(cookie);
if (cookie.getMaxAge() != 0) {
cookies.add(cookie);
if (cookie.getDomain() != null) {
addIndex(domainIndex, cookie.getDomain(), cookie);
}
addIndex(uriIndex, getEffectiveURI(uri), cookie);
}
}
}
private void addIndex(Map> indexStore, T index, Cookie cookie) {
if (index != null) {
List cookies = indexStore.get(index);
if (cookies != null) {
cookies.remove(cookie);
cookies.add(cookie);
} else {
cookies = new ArrayList();
cookies.add(cookie);
indexStore.put(index, cookies);
}
}
}
private URI getEffectiveURI(URI uri) {
URI effectiveURI = null;
try {
effectiveURI = new URI("http", uri.getHost(), null, null, null );
} catch (URISyntaxException ignored) {
effectiveURI = uri;
}
return effectiveURI;
}
/**
* returns the cookies for the uri
*
* @param uri the uri
* @return the cookies
*/
public List get(URI uri) {
List cookies = new ArrayList();
boolean secureLink = "https".equalsIgnoreCase(uri.getScheme());
synchronized (guard) {
fetchFromDomainIndex(cookies, uri.getHost(), secureLink);
fetchFromUriIndex(cookies, getEffectiveURI(uri), secureLink);
}
return cookies;
}
private void fetchFromDomainIndex(List resultList, String host, boolean secureLink) {
for (Map.Entry> entry : domainIndex.entrySet()) {
String domain = entry.getKey();
List cookieList = entry.getValue();
for (Cookie cookie : cookieList) {
if ((cookie.getVersion() == 0 && netscapeDomainMatches(domain, host)) || (cookie.getVersion() == 1 && Cookie.matches(domain, host))) {
if ((cookies.indexOf(cookie) != -1)) {
if (!cookie.hasExpired()) {
if ((secureLink || !cookie.getSecure()) && !resultList.contains(cookie)) {
resultList.add(cookie);
}
}
}
}
}
}
}
private void fetchFromUriIndex(List resultList, Comparable comparator, boolean secureLink) {
for (URI uri : uriIndex.keySet()) {
if (comparator.compareTo(uri) == 0) {
List indexedCookies = uriIndex.get(uri);
if (indexedCookies != null) {
for (Cookie httpCookie : indexedCookies) {
if (cookies.indexOf(httpCookie) != -1) {
if (!httpCookie.hasExpired()) {
if ((secureLink || !httpCookie.getSecure()) && !resultList.contains(httpCookie)) {
resultList.add(httpCookie);
}
} else {
System.out.println("is expired");
}
}
}
}
}
}
}
private boolean netscapeDomainMatches(String domain, String host) {
if (domain == null || host == null) {
return false;
}
boolean isLocalDomain = ".local".equalsIgnoreCase(domain);
int embeddedDotInDomain = domain.indexOf('.');
if (embeddedDotInDomain == 0) {
embeddedDotInDomain = domain.indexOf('.', 1);
}
if (!isLocalDomain && (embeddedDotInDomain == -1 || embeddedDotInDomain == domain.length() - 1)) {
return false;
}
if ((host.indexOf('.') == -1) && isLocalDomain) {
return true;
}
int sizeDiff = host.length() - domain.length();
if (sizeDiff == 0) {
return host.equalsIgnoreCase(domain);
} else if (sizeDiff > 0) {
String s = host.substring(sizeDiff);
return (s.equalsIgnoreCase(domain));
} else if (sizeDiff == -1) {
return ((domain.charAt(0) == '.') && (host.equalsIgnoreCase(domain.substring(1))));
}
return false;
}
@SuppressWarnings("unchecked")
private void clean() {
try {
HashMap> domainIndexCopy = null;
HashMap> uriIndexCopy = null;
synchronized (guard) {
domainIndexCopy = (HashMap>) domainIndex.clone();
uriIndexCopy = (HashMap>) uriIndex.clone();
}
for (Entry> entry : domainIndexCopy.entrySet()) {
for (Cookie cookie : entry.getValue()) {
if (cookie.hasExpired()) {
LOG.fine("cookie " + cookie + " has been expired. Deleting it");
synchronized (guard) {
domainIndex.get(entry.getKey()).remove(cookie);
if (domainIndex.get(entry.getKey()).isEmpty()) {
domainIndex.remove(entry.getKey());
}
}
}
}
}
for (Entry> entry : uriIndexCopy.entrySet()) {
for (Cookie cookie : entry.getValue()) {
if (cookie.hasExpired()) {
LOG.fine("cookie " + cookie + " has been expired. Deleting it");
synchronized (guard) {
uriIndex.get(entry.getKey()).remove(cookie);
if (uriIndex.get(entry.getKey()).isEmpty()) {
uriIndex.remove(entry.getKey());
}
}
}
}
}
} catch (Exception e) {
if (LOG.isLoggable(Level.FINE)) {
LOG.fine("error occured by cleaning store " + e.toString());
}
}
}
}
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