replicant-packages_apps_Email/src/com/android/email/service/EmailBroadcastProcessorService.java

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/*
* 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.PeriodicSync;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.CalendarContract;
import android.provider.ContactsContract;
import android.text.format.DateUtils;
import com.android.email.Preferences;
import com.android.email.R;
import com.android.email.SecurityPolicy;
import com.android.email.activity.setup.AccountSettings;
import com.android.email.provider.AccountReconciler;
import com.android.emailcommon.Logging;
import com.android.emailcommon.VendorPolicyLoader;
import com.android.emailcommon.provider.Account;
import com.android.emailcommon.provider.EmailContent;
import com.android.emailcommon.provider.EmailContent.AccountColumns;
import com.android.emailcommon.provider.HostAuth;
import com.android.mail.utils.LogUtils;
import com.google.common.collect.Maps;
import java.util.Collections;
import java.util.List;
import java.util.Map;
/**
* 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";
// Action used for EmailUpgradeBroadcastReceiver.
private static final String ACTION_UPGRADE_BROADCAST = "upgrade_broadcast_receiver";
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);
}
public static void processUpgradeBroadcastIntent(final Context context) {
final Intent i = new Intent(context, EmailBroadcastProcessorService.class);
i.setAction(ACTION_UPGRADE_BROADCAST);
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();
} 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);
} else if (ACTION_UPGRADE_BROADCAST.equals(action)) {
onAppUpgrade();
}
}
private void disableComponent(final Class<?> klass) {
getPackageManager().setComponentEnabledSetting(new ComponentName(this, klass),
PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP);
}
private boolean isComponentDisabled(final Class<?> klass) {
return getPackageManager().getComponentEnabledSetting(new ComponentName(this, klass))
== PackageManager.COMPONENT_ENABLED_STATE_DISABLED;
}
private void updateAccountManagerAccountsOfType(final String amAccountType,
final Map<String, String> protocolMap) {
final android.accounts.Account[] amAccounts =
AccountManager.get(this).getAccountsByType(amAccountType);
for (android.accounts.Account amAccount: amAccounts) {
EmailServiceUtils.updateAccountManagerType(this, amAccount, protocolMap);
}
}
/**
* Delete all periodic syncs for an account.
* @param amAccount The account for which to disable syncs.
* @param authority The authority for which to disable syncs.
*/
private static void removePeriodicSyncs(final android.accounts.Account amAccount,
final String authority) {
final List<PeriodicSync> syncs =
ContentResolver.getPeriodicSyncs(amAccount, authority);
for (final PeriodicSync sync : syncs) {
ContentResolver.removePeriodicSync(amAccount, authority, sync.extras);
}
}
/**
* Remove all existing periodic syncs for an account type, and add the necessary syncs.
* @param amAccountType The account type to handle.
* @param syncIntervals The map of all account addresses to sync intervals in the DB.
*/
private void fixPeriodicSyncs(final String amAccountType,
final Map<String, Integer> syncIntervals) {
final android.accounts.Account[] amAccounts =
AccountManager.get(this).getAccountsByType(amAccountType);
for (android.accounts.Account amAccount : amAccounts) {
// First delete existing periodic syncs.
removePeriodicSyncs(amAccount, EmailContent.AUTHORITY);
removePeriodicSyncs(amAccount, CalendarContract.AUTHORITY);
removePeriodicSyncs(amAccount, ContactsContract.AUTHORITY);
// Add back a sync for this account if necessary (i.e. the account has a positive
// sync interval in the DB). This assumes that the email app requires unique email
// addresses for each account, which is currently the case.
final Integer syncInterval = syncIntervals.get(amAccount.name);
if (syncInterval != null && syncInterval > 0) {
// Sync interval is stored in minutes in DB, but we want the value in seconds.
ContentResolver.addPeriodicSync(amAccount, EmailContent.AUTHORITY, Bundle.EMPTY,
syncInterval * DateUtils.MINUTE_IN_MILLIS / DateUtils.SECOND_IN_MILLIS);
}
}
}
/** Projection used for getting sync intervals for all accounts. */
private static final String[] ACCOUNT_SYNC_INTERVAL_PROJECTION =
{ AccountColumns.EMAIL_ADDRESS, AccountColumns.SYNC_INTERVAL };
private static final int ACCOUNT_SYNC_INTERVAL_ADDRESS_COLUMN = 0;
private static final int ACCOUNT_SYNC_INTERVAL_INTERVAL_COLUMN = 1;
/**
* Get the sync interval for all accounts, as stored in the DB.
* @return The map of all sync intervals by account email address.
*/
private Map<String, Integer> getSyncIntervals() {
final Cursor c = getContentResolver().query(Account.CONTENT_URI,
ACCOUNT_SYNC_INTERVAL_PROJECTION, null, null, null);
if (c != null) {
final Map<String, Integer> periodicSyncs =
Maps.newHashMapWithExpectedSize(c.getCount());
try {
while (c.moveToNext()) {
periodicSyncs.put(c.getString(ACCOUNT_SYNC_INTERVAL_ADDRESS_COLUMN),
c.getInt(ACCOUNT_SYNC_INTERVAL_INTERVAL_COLUMN));
}
} finally {
c.close();
}
return periodicSyncs;
}
return Collections.emptyMap();
}
private void onAppUpgrade() {
if (isComponentDisabled(EmailUpgradeBroadcastReceiver.class)) {
return;
}
// TODO: Only do this for Email2Google.
// When upgrading to Email2Google, we need to essentially rename the account manager
// type for all existing accounts, so we add new ones and delete the old.
// We specify the translations in this map. We map from old protocol name to new protocol
// name, and from protocol name + "_type" to new account manager type name. (Email1 did
// not use distinct account manager types for POP and IMAP, but Email2 does, hence this
// weird mapping.)
final Map<String, String> protocolMap = Maps.newHashMapWithExpectedSize(4);
protocolMap.put("imap", getString(R.string.protocol_legacy_imap));
protocolMap.put("pop3", getString(R.string.protocol_pop3));
protocolMap.put("imap_type", getString(R.string.account_manager_type_legacy_imap));
protocolMap.put("pop3_type", getString(R.string.account_manager_type_pop3));
updateAccountManagerAccountsOfType("com.android.email", protocolMap);
protocolMap.clear();
protocolMap.put("eas", getString(R.string.protocol_eas));
protocolMap.put("eas_type", getString(R.string.account_manager_type_exchange));
updateAccountManagerAccountsOfType("com.android.exchange", protocolMap);
// Disable the old authenticators.
disableComponent(LegacyEmailAuthenticatorService.class);
disableComponent(LegacyEasAuthenticatorService.class);
// Fix periodic syncs.
final Map<String, Integer> syncIntervals = getSyncIntervals();
for (final EmailServiceUtils.EmailServiceInfo service
: EmailServiceUtils.getServiceInfoList(this)) {
fixPeriodicSyncs(service.accountType, syncIntervals);
}
// Disable the upgrade broadcast receiver now that we're fully upgraded.
disableComponent(EmailUpgradeBroadcastReceiver.class);
}
/**
* Handles {@link Intent#ACTION_BOOT_COMPLETED}. Called on a worker thread.
*/
private void onBootCompleted() {
performOneTimeInitialization();
reconcileAndStartServices();
}
private void reconcileAndStartServices() {
/**
* We can get here before the ACTION_UPGRADE_BROADCAST is received, so make sure the
* accounts are converted otherwise terrible, horrible things will happen.
*/
onAppUpgrade();
// Reconcile accounts
AccountReconciler.reconcileAccounts(this);
// Starts remote services, if any
EmailServiceUtils.startRemoteServices(this);
}
private void performOneTimeInitialization() {
final Preferences pref = Preferences.getPreferences(this);
int progress = pref.getOneTimeInitializationProgress();
final int initialProgress = progress;
if (progress < 1) {
LogUtils.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) {
LogUtils.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);
LogUtils.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);
String legacyImapProtocol = context.getString(R.string.protocol_legacy_imap);
if (legacyImapProtocol.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() {
LogUtils.i(Logging.LOG_TAG, "System accounts updated.");
reconcileAndStartServices();
}
}