/*
* Copyright (C) 2010 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 com.android.email.service;
import android.accounts.AccountManager;
import android.app.IntentService;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.Uri;
import android.util.Log;
import com.android.email.Email;
import com.android.email.Preferences;
import com.android.email.SecurityPolicy;
import com.android.email.VendorPolicyLoader;
import com.android.email.activity.setup.AccountSettings;
import com.android.emailcommon.Logging;
import com.android.emailcommon.provider.Account;
import com.android.emailcommon.provider.EmailContent.AccountColumns;
import com.android.emailcommon.provider.HostAuth;
/**
* The service that really handles broadcast intents on a worker thread.
*
* We make it a service, because:
* <ul>
* <li>So that it's less likely for the process to get killed.
* <li>Even if it does, the Intent that have started it will be re-delivered by the system,
* and we can start the process again. (Using {@link #setIntentRedelivery}).
* </ul>
*
* This also handles the DeviceAdminReceiver in SecurityPolicy, because it is also
* a BroadcastReceiver and requires the same processing semantics.
*/
public class EmailBroadcastProcessorService extends IntentService {
// Action used for BroadcastReceiver entry point
private static final String ACTION_BROADCAST = "broadcast_receiver";
// Dialing "*#*#36245#*#*" to open the debug screen. "36245" = "email"
private static final String ACTION_SECRET_CODE = "android.provider.Telephony.SECRET_CODE";
private static final String SECRET_CODE_HOST_DEBUG_SCREEN = "36245";
// This is a helper used to process DeviceAdminReceiver messages
private static final String ACTION_DEVICE_POLICY_ADMIN = "com.android.email.devicepolicy";
private static final String EXTRA_DEVICE_POLICY_ADMIN = "message_code";
public EmailBroadcastProcessorService() {
// Class name will be the thread name.
super(EmailBroadcastProcessorService.class.getName());
// Intent should be redelivered if the process gets killed before completing the job.
setIntentRedelivery(true);
}
/**
* Entry point for {@link EmailBroadcastReceiver}.
*/
public static void processBroadcastIntent(Context context, Intent broadcastIntent) {
Intent i = new Intent(context, EmailBroadcastProcessorService.class);
i.setAction(ACTION_BROADCAST);
i.putExtra(Intent.EXTRA_INTENT, broadcastIntent);
context.startService(i);
}
/**
* Entry point for {@link com.android.email.SecurityPolicy.PolicyAdmin}. These will
* simply callback to {@link
* com.android.email.SecurityPolicy#onDeviceAdminReceiverMessage(Context, int)}.
*/
public static void processDevicePolicyMessage(Context context, int message) {
Intent i = new Intent(context, EmailBroadcastProcessorService.class);
i.setAction(ACTION_DEVICE_POLICY_ADMIN);
i.putExtra(EXTRA_DEVICE_POLICY_ADMIN, message);
context.startService(i);
}
@Override
protected void onHandleIntent(Intent intent) {
// This method is called on a worker thread.
// Dispatch from entry point
final String action = intent.getAction();
if (ACTION_BROADCAST.equals(action)) {
final Intent broadcastIntent = intent.getParcelableExtra(Intent.EXTRA_INTENT);
final String broadcastAction = broadcastIntent.getAction();
if (Intent.ACTION_BOOT_COMPLETED.equals(broadcastAction)) {
onBootCompleted();
// TODO: Do a better job when we get ACTION_DEVICE_STORAGE_LOW.
// The code below came from very old code....
} else if (Intent.ACTION_DEVICE_STORAGE_LOW.equals(broadcastAction)) {
// Stop IMAP/POP3 poll.
MailService.actionCancel(this);
} else if (Intent.ACTION_DEVICE_STORAGE_OK.equals(broadcastAction)) {
enableComponentsIfNecessary();
} else if (ACTION_SECRET_CODE.equals(broadcastAction)
&& SECRET_CODE_HOST_DEBUG_SCREEN.equals(broadcastIntent.getData().getHost())) {
AccountSettings.actionSettingsWithDebug(this);
} else if (AccountManager.LOGIN_ACCOUNTS_CHANGED_ACTION.equals(broadcastAction)) {
onSystemAccountChanged();
}
} else if (ACTION_DEVICE_POLICY_ADMIN.equals(action)) {
int message = intent.getIntExtra(EXTRA_DEVICE_POLICY_ADMIN, -1);
SecurityPolicy.onDeviceAdminReceiverMessage(this, message);
}
}
private void enableComponentsIfNecessary() {
if (Email.setServicesEnabledSync(this)) {
// At least one account exists.
// TODO probably we should check if it's a POP/IMAP account.
MailService.actionReschedule(this);
}
}
/**
* Handles {@link Intent#ACTION_BOOT_COMPLETED}. Called on a worker thread.
*/
private void onBootCompleted() {
performOneTimeInitialization();
enableComponentsIfNecessary();
// Starts the service for Exchange, if supported.
EmailServiceUtils.startExchangeService(this);
}
private void performOneTimeInitialization() {
final Preferences pref = Preferences.getPreferences(this);
int progress = pref.getOneTimeInitializationProgress();
final int initialProgress = progress;
if (progress < 1) {
Log.i(Logging.LOG_TAG, "Onetime initialization: 1");
progress = 1;
if (VendorPolicyLoader.getInstance(this).useAlternateExchangeStrings()) {
setComponentEnabled(EasAuthenticatorServiceAlternate.class, true);
setComponentEnabled(EasAuthenticatorService.class, false);
}
}
if (progress < 2) {
Log.i(Logging.LOG_TAG, "Onetime initialization: 2");
progress = 2;
setImapDeletePolicy(this);
}
// Add your initialization steps here.
// Use "progress" to skip the initializations that's already done before.
// Using this preference also makes it safe when a user skips an upgrade. (i.e. upgrading
// version N to version N+2)
if (progress != initialProgress) {
pref.setOneTimeInitializationProgress(progress);
Log.i(Logging.LOG_TAG, "Onetime initialization: completed.");
}
}
/**
* Sets the delete policy to the correct value for all IMAP accounts. This will have no
* effect on either EAS or POP3 accounts.
*/
/*package*/ static void setImapDeletePolicy(Context context) {
ContentResolver resolver = context.getContentResolver();
Cursor c = resolver.query(Account.CONTENT_URI, Account.CONTENT_PROJECTION,
null, null, null);
try {
while (c.moveToNext()) {
long recvAuthKey = c.getLong(Account.CONTENT_HOST_AUTH_KEY_RECV_COLUMN);
HostAuth recvAuth = HostAuth.restoreHostAuthWithId(context, recvAuthKey);
if (HostAuth.SCHEME_IMAP.equals(recvAuth.mProtocol)) {
int flags = c.getInt(Account.CONTENT_FLAGS_COLUMN);
flags &= ~Account.FLAGS_DELETE_POLICY_MASK;
flags |= Account.DELETE_POLICY_ON_DELETE << Account.FLAGS_DELETE_POLICY_SHIFT;
ContentValues cv = new ContentValues();
cv.put(AccountColumns.FLAGS, flags);
long accountId = c.getLong(Account.CONTENT_ID_COLUMN);
Uri uri = ContentUris.withAppendedId(Account.CONTENT_URI, accountId);
resolver.update(uri, cv, null, null);
}
}
} finally {
c.close();
}
}
private void setComponentEnabled(Class<?> clazz, boolean enabled) {
final ComponentName c = new ComponentName(this, clazz.getName());
getPackageManager().setComponentEnabledSetting(c,
enabled ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
: PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
PackageManager.DONT_KILL_APP);
}
private void onSystemAccountChanged() {
Log.i(Logging.LOG_TAG, "System accounts updated.");
MailService.reconcilePopImapAccountsSync(this);
// If the exchange service wasn't already running, starting it will cause exchange account
// reconciliation to be performed. The service stops itself it there are no EAS accounts.
EmailServiceUtils.startExchangeService(this);
}
}