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Commit 133ec72f authored by Android (Google) Code Review's avatar Android (Google) Code Review Committed by The Android Open Source Project
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am 288fe16c: Merge change 6043 into donut

Merge commit '288fe16c'

* commit '288fe16c':
  System and Secure settings backup.
parents 82c30ee5 288fe16c
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+71 −0
Original line number Diff line number Diff line
@@ -1353,6 +1353,49 @@ public final class Settings {
         */
        public static final String SHOW_WEB_SUGGESTIONS = "show_web_suggestions";

        /**
         * Settings to backup. This is here so that it's in the same place as the settings
         * keys and easy to update.
         * @hide
         */
        public static final String[] SETTINGS_TO_BACKUP = {
            STAY_ON_WHILE_PLUGGED_IN,
            END_BUTTON_BEHAVIOR,
            WIFI_SLEEP_POLICY,
            WIFI_USE_STATIC_IP,
            WIFI_STATIC_IP,
            WIFI_STATIC_GATEWAY,
            WIFI_STATIC_NETMASK,
            WIFI_STATIC_DNS1,
            WIFI_STATIC_DNS2,
            BLUETOOTH_DISCOVERABILITY,
            BLUETOOTH_DISCOVERABILITY_TIMEOUT,
            DIM_SCREEN,
            SCREEN_OFF_TIMEOUT,
            SCREEN_BRIGHTNESS,
            VIBRATE_ON,
            NOTIFICATIONS_USE_RING_VOLUME,
            RINGTONE,
            NOTIFICATION_SOUND,
            TEXT_AUTO_REPLACE,
            TEXT_AUTO_CAPS,
            TEXT_AUTO_PUNCTUATE,
            TEXT_SHOW_PASSWORD,
            AUTO_TIME,
            TIME_12_24,
            DATE_FORMAT,
            ACCELEROMETER_ROTATION,
            DTMF_TONE_WHEN_DIALING,
            DTMF_TONE_TYPE_WHEN_DIALING,
            EMERGENCY_TONE,
            CALL_AUTO_RETRY,
            HEARING_AID,
            TTY_MODE,
            SOUND_EFFECTS_ENABLED,
            HAPTIC_FEEDBACK_ENABLED,
            SHOW_WEB_SUGGESTIONS
        };

        // Settings moved to Settings.Secure

        /**
@@ -2267,6 +2310,34 @@ public final class Settings {
         */
        public static final String LAST_SETUP_SHOWN = "last_setup_shown";

        /**
         * @hide
         */
        public static final String[] SETTINGS_TO_BACKUP = {
            INSTALL_NON_MARKET_APPS,
            PARENTAL_CONTROL_ENABLED,
            PARENTAL_CONTROL_REDIRECT_URL,
            USB_MASS_STORAGE_ENABLED,
            ACCESSIBILITY_ENABLED,
            ENABLED_ACCESSIBILITY_SERVICES,
            TTS_USE_DEFAULTS,
            TTS_DEFAULT_RATE,
            TTS_DEFAULT_PITCH,
            TTS_DEFAULT_SYNTH,
            TTS_DEFAULT_LANG,
            TTS_DEFAULT_COUNTRY,
            WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON,
            WIFI_NETWORKS_AVAILABLE_REPEAT_DELAY,
            WIFI_NUM_ALLOWED_CHANNELS,
            WIFI_NUM_OPEN_NETWORKS_KEPT,
            BACKGROUND_DATA,
            PREFERRED_NETWORK_MODE,
            PREFERRED_TTY_MODE,
            CDMA_CELL_BROADCAST_SMS,
            PREFERRED_CDMA_SUBSCRIPTION,
            ENHANCED_VOICE_PRIVACY_ENABLED
        };

        /**
         * Helper method for determining if a location provider is enabled.
         * @param cr the content resolver to use
+1 −0
Original line number Diff line number Diff line
@@ -4,6 +4,7 @@

    <application android:allowClearUserData="false"
                 android:label="@string/app_label"
                 android:backupAgent="SettingsBackupAgent"
                 android:icon="@drawable/ic_launcher_settings">

        <provider android:name="SettingsProvider" android:authorities="settings"
+320 −0
Original line number Diff line number Diff line
/*
 * Copyright (C) 2008 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.providers.settings;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.HashMap;

import android.backup.BackupDataInput;
import android.backup.BackupDataOutput;
import android.backup.BackupHelperAgent;
import android.bluetooth.BluetoothDevice;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.media.AudioManager;
import android.net.Uri;
import android.net.wifi.WifiManager;
import android.os.ParcelFileDescriptor;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.provider.Settings;
import android.text.TextUtils;
import android.util.Log;

/**
 * Performs backup and restore of the System and Secure settings.
 * List of settings that are backed up are stored in the Settings.java file
 */
public class SettingsBackupAgent extends BackupHelperAgent {

    private static final String KEY_SYSTEM = "system";
    private static final String KEY_SECURE = "secure";
    private static final String KEY_SYNC = "sync_providers";

    private static String[] sortedSystemKeys = null;
    private static String[] sortedSecureKeys = null;

    private static final byte[] EMPTY_DATA = new byte[0];

    private static final String TAG = "SettingsBackupAgent";

    private static final int COLUMN_ID = 0;
    private static final int COLUMN_NAME = 1;
    private static final int COLUMN_VALUE = 2;

    private static final String[] PROJECTION = {
        Settings.NameValueTable._ID,
        Settings.NameValueTable.NAME,
        Settings.NameValueTable.VALUE
    };

    private static final String FILE_WIFI_SUPPLICANT = "/data/misc/wifi/wpa_supplicant.conf";
    private static final String FILE_BT_ROOT = "/data/misc/hcid/";

    private SettingsHelper mSettingsHelper;

    public void onCreate() {
        mSettingsHelper = new SettingsHelper(this);
        super.onCreate();
    }

    @Override
    public void onBackup(ParcelFileDescriptor oldState, BackupDataOutput data,
            ParcelFileDescriptor newState) throws IOException {

        byte[] systemSettingsData = getSystemSettings();
        byte[] secureSettingsData = getSecureSettings();
        byte[] syncProviders = mSettingsHelper.getSyncProviders();
        
        data.writeEntityHeader(KEY_SYSTEM, systemSettingsData.length);
        data.writeEntityData(systemSettingsData, systemSettingsData.length);

        data.writeEntityHeader(KEY_SECURE, secureSettingsData.length);
        data.writeEntityData(secureSettingsData, secureSettingsData.length);

        data.writeEntityHeader(KEY_SYNC, syncProviders.length);
        data.writeEntityData(syncProviders, syncProviders.length);
        
        //TODO: Permissions problem : backupFile(FILE_WIFI_SUPPLICANT, data);
    }

    @Override
    public void onRestore(BackupDataInput data, int appVersionCode,
            ParcelFileDescriptor newState) throws IOException {

        enableWifi(false);
        enableBluetooth(false);

        while (data.readNextHeader()) {
            final String key = data.getKey();
            if (KEY_SYSTEM.equals(key)) {
                restoreSettings(data, Settings.System.CONTENT_URI);
            } else if (KEY_SECURE.equals(key)) {
                restoreSettings(data, Settings.Secure.CONTENT_URI);
            } else if (FILE_WIFI_SUPPLICANT.equals(key)) {
                restoreFile(FILE_WIFI_SUPPLICANT, data);
            } else if (KEY_SYNC.equals(key)) {
                mSettingsHelper.setSyncProviders(data);
            } else {
                data.skipEntityData();
            }
        }
    }

    private byte[] getSystemSettings() {
        Cursor sortedCursor = getContentResolver().query(Settings.System.CONTENT_URI, PROJECTION,
                null, null, Settings.NameValueTable.NAME);
        // Copy and sort the array
        if (sortedSystemKeys == null) {
            sortedSystemKeys = copyAndSort(Settings.System.SETTINGS_TO_BACKUP);
        }
        byte[] result = extractRelevantValues(sortedCursor, sortedSystemKeys);
        sortedCursor.close();
        return result;
    }

    private byte[] getSecureSettings() {
        Cursor sortedCursor = getContentResolver().query(Settings.Secure.CONTENT_URI, PROJECTION,
                null, null, Settings.NameValueTable.NAME);
        // Copy and sort the array
        if (sortedSecureKeys == null) {
            sortedSecureKeys = copyAndSort(Settings.Secure.SETTINGS_TO_BACKUP);
        }
        byte[] result = extractRelevantValues(sortedCursor, sortedSecureKeys);
        sortedCursor.close();
        return result;
    }

    private void restoreSettings(BackupDataInput data, Uri contentUri) {
        ContentValues cv = new ContentValues(2);
        byte[] settings = new byte[data.getDataSize()];
        try {
            data.readEntityData(settings, 0, settings.length);
        } catch (IOException ioe) {
            Log.e(TAG, "Couldn't read entity data");
            return;
        }
        int pos = 0;
        while (pos < settings.length) {
            int length = readInt(settings, pos);
            pos += 4;
            String settingName = length > 0? new String(settings, pos, length) : null;
            pos += length;
            length = readInt(settings, pos);
            pos += 4;
            String settingValue = length > 0? new String(settings, pos, length) : null;
            pos += length;
            if (!TextUtils.isEmpty(settingName) && !TextUtils.isEmpty(settingValue)) {
                //Log.i(TAG, "Restore " + settingName + " = " + settingValue);
                cv.clear();
                cv.put(Settings.NameValueTable.NAME, settingName);
                cv.put(Settings.NameValueTable.VALUE, settingValue);
                getContentResolver().insert(contentUri, cv);
                mSettingsHelper.restoreValue(settingName, settingValue);
            }
        }
    }

    private String[] copyAndSort(String[] keys) {
        String[] sortedKeys = new String[keys.length];
        System.arraycopy(keys, 0, sortedKeys, 0, keys.length);
        Arrays.sort(sortedKeys);
        return sortedKeys;
    }

    /**
     * Given a cursor sorted by key name and a set of keys sorted by name, 
     * extract the required keys and values and write them to a byte array.
     * @param sortedCursor
     * @param sortedKeys
     * @return
     */
    byte[] extractRelevantValues(Cursor sortedCursor, String[] sortedKeys) {
        byte[][] values = new byte[sortedKeys.length * 2][]; // keys and values
        if (!sortedCursor.moveToFirst()) {
            Log.e(TAG, "Couldn't read from the cursor");
            return new byte[0];
        }
        int keyIndex = 0;
        int totalSize = 0;
        while (!sortedCursor.isAfterLast()) {
            String name = sortedCursor.getString(COLUMN_NAME);
            while (sortedKeys[keyIndex].compareTo(name.toString()) < 0) {
                keyIndex++;
                if (keyIndex == sortedKeys.length) break;
            }
            if (keyIndex < sortedKeys.length && name.equals(sortedKeys[keyIndex])) {
                String value = sortedCursor.getString(COLUMN_VALUE);
                byte[] nameBytes = name.toString().getBytes();
                totalSize += 4 + nameBytes.length;
                values[keyIndex * 2] = nameBytes;
                byte[] valueBytes;
                if (TextUtils.isEmpty(value)) {
                    valueBytes = null;
                    totalSize += 4;
                } else {
                    valueBytes = value.toString().getBytes();
                    totalSize += 4 + valueBytes.length;
                    //Log.i(TAG, "Backing up " + name + " = " + value);
                }
                values[keyIndex * 2 + 1] = valueBytes;
                keyIndex++;
            }
            if (keyIndex == sortedKeys.length || !sortedCursor.moveToNext()) {
                break;
            }
        }

        byte[] result = new byte[totalSize];
        int pos = 0;
        for (int i = 0; i < sortedKeys.length * 2; i++) {
            if (values[i] != null) {
                pos = writeInt(result, pos, values[i].length);
                pos = writeBytes(result, pos, values[i]);
            }
        }
        return result;
    }

    private void backupFile(String filename, BackupDataOutput data) {
        try {
            File file = new File(filename);
            if (file.exists()) {
                byte[] bytes = new byte[(int) file.length()];
                FileInputStream fis = new FileInputStream(file);
                int offset = 0;
                int got = 0;
                do {
                    got = fis.read(bytes, offset, bytes.length - offset);
                    if (got > 0) offset += got;
                } while (offset < bytes.length && got > 0);
                data.writeEntityHeader(filename, bytes.length);
                data.writeEntityData(bytes, bytes.length);
            } else {
                data.writeEntityHeader(filename, 0);
                data.writeEntityData(EMPTY_DATA, 0);
            }
        } catch (IOException ioe) {
            Log.w(TAG, "Couldn't backup " + filename);
        }
    }

    private void restoreFile(String filename, BackupDataInput data) {
        byte[] bytes = new byte[data.getDataSize()];
        if (bytes.length <= 0) return;
        try {
            data.readEntityData(bytes, 0, bytes.length);
            FileOutputStream fos = new FileOutputStream(filename);
            fos.write(bytes);
        } catch (IOException ioe) {
            Log.w(TAG, "Couldn't restore " + filename);
        }
    }

    /**
     * Write an int in BigEndian into the byte array.
     * @param out byte array
     * @param pos current pos in array
     * @param value integer to write
     * @return the index after adding the size of an int (4)
     */
    private int writeInt(byte[] out, int pos, int value) {
        out[pos + 0] = (byte) ((value >> 24) & 0xFF);
        out[pos + 1] = (byte) ((value >> 16) & 0xFF);
        out[pos + 2] = (byte) ((value >>  8) & 0xFF);
        out[pos + 3] = (byte) ((value >>  0) & 0xFF);
        return pos + 4;
    }

    private int writeBytes(byte[] out, int pos, byte[] value) {
        System.arraycopy(value, 0, out, pos, value.length);
        return pos + value.length;
    }

    private int readInt(byte[] in, int pos) {
        int result =
                ((in[pos    ] & 0xFF) << 24) |
                ((in[pos + 1] & 0xFF) << 16) |
                ((in[pos + 2] & 0xFF) <<  8) |
                ((in[pos + 3] & 0xFF) <<  0);
        return result;
    }

    private void enableWifi(boolean enable) {
        WifiManager wfm = (WifiManager) getSystemService(Context.WIFI_SERVICE);
        if (wfm != null) {
            wfm.setWifiEnabled(enable);
        }
    }

    private void enableBluetooth(boolean enable) {
        BluetoothDevice bt = (BluetoothDevice) getSystemService(Context.BLUETOOTH_SERVICE);
        if (bt != null) {
            if (!enable) {
                bt.disable();
            } else {
                bt.enable();
            }
        }
    }
}
+104 −0
Original line number Diff line number Diff line
/*
 * Copyright (C) 2008 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.providers.settings;

import android.backup.BackupDataInput;
import android.content.ContentResolver;
import android.content.Context;
import android.media.AudioManager;
import android.os.IHardwareService;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.provider.Settings;
import android.content.IContentService;
import android.util.Log;

public class SettingsHelper {
    private static final String TAG = "SettingsHelper";

    private Context mContext;
    private AudioManager mAudioManager;
    private IContentService mContentService;
    private static final String SYNC_AUTO = "auto_sync";
    private static final String SYNC_MAIL = "gmail-ls_sync";
    private static final String SYNC_CALENDAR = "calendar_sync";
    private static final String SYNC_CONTACTS = "contacts_sync";

    public SettingsHelper(Context context) {
        mContext = context;
        mAudioManager = (AudioManager) context
                .getSystemService(Context.AUDIO_SERVICE);
        mContentService = ContentResolver.getContentService();
    }

    public void restoreValue(String name, String value) {
        if (Settings.System.SCREEN_BRIGHTNESS.equals(name)) {
            setBrightness(Integer.parseInt(value));
        } else if (Settings.System.SOUND_EFFECTS_ENABLED.equals(name)) {
            if (Integer.parseInt(value) == 1) {
                mAudioManager.loadSoundEffects();
            } else {
                mAudioManager.unloadSoundEffects();
            }
        }
    }

    private void setBrightness(int brightness) {
        try {
            IHardwareService hardware = IHardwareService.Stub
                    .asInterface(ServiceManager.getService("hardware"));
            if (hardware != null) {
                hardware.setBacklights(brightness);
            }
        } catch (RemoteException doe) {

        }
    }

    static final String[] PROVIDERS = { "gmail-ls", "calendar", "contacts" };
    
    byte[] getSyncProviders() {
        byte[] sync = new byte[1 + PROVIDERS.length];
        try {
            sync[0] = (byte) (mContentService.getListenForNetworkTickles() ? 1 : 0);
            for (int i = 0; i < PROVIDERS.length; i++) {
                sync[i + 1] = (byte) 
                        (mContentService.getSyncProviderAutomatically(PROVIDERS[i]) ? 1 : 0);
            }
        } catch (RemoteException re) {
            Log.w(TAG, "Unable to backup sync providers");
            return sync;
        }
        return sync;
    }
    
    void setSyncProviders(BackupDataInput backup) {
        byte[] sync = new byte[backup.getDataSize()];

        try {
            backup.readEntityData(sync, 0, sync.length);
            mContentService.setListenForNetworkTickles(sync[0] == 1);
            for (int i = 0; i < PROVIDERS.length; i++) {
                mContentService.setSyncProviderAutomatically(PROVIDERS[i], sync[i + 1] > 0);
            }
        } catch (RemoteException re) {
            Log.w(TAG, "Unable to restore sync providers");
        } catch (java.io.IOException ioe) {
            Log.w(TAG, "Unable to read sync settings");
        }
    }
}
+15 −2
Original line number Diff line number Diff line
@@ -16,6 +16,9 @@

package com.android.providers.settings;

import java.io.FileNotFoundException;

import android.backup.IBackupManager;
import android.content.ContentProvider;
import android.content.ContentUris;
import android.content.ContentValues;
@@ -27,6 +30,7 @@ import android.database.sqlite.SQLiteQueryBuilder;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.ParcelFileDescriptor;
import android.os.ServiceManager;
import android.os.SystemProperties;
import android.provider.DrmStore;
import android.provider.MediaStore;
@@ -34,8 +38,6 @@ import android.provider.Settings;
import android.text.TextUtils;
import android.util.Log;

import java.io.FileNotFoundException;

public class SettingsProvider extends ContentProvider {
    private static final String TAG = "SettingsProvider";
    private static final boolean LOCAL_LOGV = false;
@@ -137,6 +139,17 @@ public class SettingsProvider extends ContentProvider {
            SystemProperties.set(property, Long.toString(version));
        }

        // Inform the backup manager about a data change
        IBackupManager ibm = IBackupManager.Stub.asInterface(
                ServiceManager.getService(Context.BACKUP_SERVICE));
        if (ibm != null) {
            try {
                ibm.dataChanged(getContext().getPackageName());
            } catch (Exception e) {
                // Try again later
            }
        }

        // Now send the notification through the content framework.

        String notify = uri.getQueryParameter("notify");