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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed 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.
*/
package android.webkit;
import android.content.Context;
import android.util.Log;
import android.webkit.CookieManager.Cookie;
import java.util.ArrayList;
import java.util.Iterator;
/**
* The class CookieSyncManager is used to synchronize the browser cookies
* between RAM and FLASH. To get the best performance, browser cookie is saved
* in RAM. We use a separate thread to sync the cookies between RAM and FLASH on
* a timer base.
* <p>
* To use the CookieSyncManager, the host application has to call the following
* when the application starts.
* <p>
* CookieSyncManager.createInstance(context)
* <p>
* To set up for sync, the host application has to call
* <p>
* CookieSyncManager.getInstance().startSync()
* <p>
* in its Activity.onResume(), and call
* <p>
* CookieSyncManager.getInstance().stopSync()
* <p>
* in its Activity.onStop().
* <p>
* To get instant sync instead of waiting for the timer to trigger, the host can
* call
* <p>
* CookieSyncManager.getInstance().sync()
*/
public final class CookieSyncManager extends WebSyncManager {
private static CookieSyncManager sRef;
// time when last update happened
private long mLastUpdate;
private CookieSyncManager(Context context) {
super(context, "CookieSyncManager");
}
/**
* Singleton access to a {@link CookieSyncManager}. An
* IllegalStateException will be thrown if
* {@link CookieSyncManager#createInstance(Context)} is not called before.
*
* @return CookieSyncManager
*/
public static synchronized CookieSyncManager getInstance() {
if (sRef == null) {
throw new IllegalStateException(
"CookieSyncManager::createInstance() needs to be called "
+ "before CookieSyncManager::getInstance()");
}
return sRef;
}
/**
* Create a singleton CookieSyncManager within a context
* @param context
* @return CookieSyncManager
*/
public static synchronized CookieSyncManager createInstance(
Context context) {
if (sRef == null) {
sRef = new CookieSyncManager(context);
}
return sRef;
}
/**
* Package level api, called from CookieManager Get all the cookies which
* matches a given base domain.
* @param domain
* @return A list of Cookie
*/
ArrayList<Cookie> getCookiesForDomain(String domain) {
// null mDataBase implies that the host application doesn't support
// persistent cookie. No sync needed.
if (mDataBase == null) {
return new ArrayList<Cookie>();
}
return mDataBase.getCookiesForDomain(domain);
}
/**
* Package level api, called from CookieManager Clear all cookies in the
* database
*/
void clearAllCookies() {
// null mDataBase implies that the host application doesn't support
// persistent cookie.
if (mDataBase == null) {
return;
}
mDataBase.clearCookies();
}
/**
* Returns true if there are any saved cookies.
*/
boolean hasCookies() {
// null mDataBase implies that the host application doesn't support
// persistent cookie.
if (mDataBase == null) {
return false;
}
return mDataBase.hasCookies();
}
/**
* Package level api, called from CookieManager Clear all session cookies in
* the database
*/
void clearSessionCookies() {
// null mDataBase implies that the host application doesn't support
// persistent cookie.
if (mDataBase == null) {
return;
}
mDataBase.clearSessionCookies();
}
/**
* Package level api, called from CookieManager Clear all expired cookies in
* the database
*/
void clearExpiredCookies(long now) {
// null mDataBase implies that the host application doesn't support
// persistent cookie.
if (mDataBase == null) {
return;
}
mDataBase.clearExpiredCookies(now);
}
protected void syncFromRamToFlash() {
if (WebView.LOGV_ENABLED) {
Log.v(LOGTAG, "CookieSyncManager::syncFromRamToFlash STARTS");
}
if (!CookieManager.getInstance().acceptCookie()) {
return;
}
ArrayList<Cookie> cookieList = CookieManager.getInstance()
.getUpdatedCookiesSince(mLastUpdate);
mLastUpdate = System.currentTimeMillis();
syncFromRamToFlash(cookieList);
ArrayList<Cookie> lruList =
CookieManager.getInstance().deleteLRUDomain();
syncFromRamToFlash(lruList);
if (WebView.LOGV_ENABLED) {
Log.v(LOGTAG, "CookieSyncManager::syncFromRamToFlash DONE");
}
}
private void syncFromRamToFlash(ArrayList<Cookie> list) {
Iterator<Cookie> iter = list.iterator();
while (iter.hasNext()) {
Cookie cookie = iter.next();
if (cookie.mode != Cookie.MODE_NORMAL) {
if (cookie.mode != Cookie.MODE_NEW) {
mDataBase.deleteCookies(cookie.domain, cookie.path,
cookie.name);
}
if (cookie.mode != Cookie.MODE_DELETED) {
mDataBase.addCookie(cookie);
CookieManager.getInstance().syncedACookie(cookie);
} else {
CookieManager.getInstance().deleteACookie(cookie);
}
}
}
}
}
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