Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.providers.settings; |
| 18 | |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 19 | import android.app.backup.BackupAgentHelper; |
| 20 | import android.app.backup.BackupDataInput; |
| 21 | import android.app.backup.BackupDataOutput; |
| 22 | import android.app.backup.FullBackupDataOutput; |
Christopher Tate | 87bc7e7 | 2013-06-10 16:55:02 -0700 | [diff] [blame] | 23 | import android.content.ContentResolver; |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 24 | import android.content.ContentValues; |
| 25 | import android.content.Context; |
| 26 | import android.database.Cursor; |
| 27 | import android.net.Uri; |
| 28 | import android.net.wifi.WifiManager; |
| 29 | import android.os.FileUtils; |
Christopher Tate | d488bc0 | 2012-10-09 14:06:30 -0700 | [diff] [blame] | 30 | import android.os.Handler; |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 31 | import android.os.ParcelFileDescriptor; |
| 32 | import android.os.Process; |
| 33 | import android.provider.Settings; |
| 34 | import android.util.Log; |
| 35 | |
Brad Fitzpatrick | 7078789 | 2010-11-17 11:31:12 -0800 | [diff] [blame] | 36 | import java.io.BufferedOutputStream; |
Amith Yamasani | 2cfab84 | 2009-09-09 18:27:31 -0700 | [diff] [blame] | 37 | import java.io.BufferedReader; |
| 38 | import java.io.BufferedWriter; |
Christopher Tate | 8dfe2b9 | 2012-05-15 15:05:04 -0700 | [diff] [blame] | 39 | import java.io.CharArrayReader; |
Amith Yamasani | d158214 | 2009-07-08 20:04:55 -0700 | [diff] [blame] | 40 | import java.io.DataInputStream; |
| 41 | import java.io.DataOutputStream; |
Amith Yamasani | 2cfab84 | 2009-09-09 18:27:31 -0700 | [diff] [blame] | 42 | import java.io.EOFException; |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 43 | import java.io.File; |
| 44 | import java.io.FileInputStream; |
| 45 | import java.io.FileOutputStream; |
Amith Yamasani | 2cfab84 | 2009-09-09 18:27:31 -0700 | [diff] [blame] | 46 | import java.io.FileReader; |
| 47 | import java.io.FileWriter; |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 48 | import java.io.IOException; |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 49 | import java.io.InputStream; |
Brad Fitzpatrick | 7078789 | 2010-11-17 11:31:12 -0800 | [diff] [blame] | 50 | import java.io.OutputStream; |
Christopher Tate | 8dfe2b9 | 2012-05-15 15:05:04 -0700 | [diff] [blame] | 51 | import java.io.Writer; |
| 52 | import java.util.ArrayList; |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 53 | import java.util.HashMap; |
Christopher Tate | 8dfe2b9 | 2012-05-15 15:05:04 -0700 | [diff] [blame] | 54 | import java.util.HashSet; |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 55 | import java.util.Map; |
Amith Yamasani | d158214 | 2009-07-08 20:04:55 -0700 | [diff] [blame] | 56 | import java.util.zip.CRC32; |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 57 | |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 58 | /** |
| 59 | * Performs backup and restore of the System and Secure settings. |
| 60 | * List of settings that are backed up are stored in the Settings.java file |
| 61 | */ |
Christopher Tate | cc84c69 | 2010-03-29 14:54:02 -0700 | [diff] [blame] | 62 | public class SettingsBackupAgent extends BackupAgentHelper { |
Christopher Tate | 436344a | 2009-09-30 16:17:37 -0700 | [diff] [blame] | 63 | private static final boolean DEBUG = false; |
Christopher Tate | 8dfe2b9 | 2012-05-15 15:05:04 -0700 | [diff] [blame] | 64 | private static final boolean DEBUG_BACKUP = DEBUG || false; |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 65 | |
| 66 | private static final String KEY_SYSTEM = "system"; |
| 67 | private static final String KEY_SECURE = "secure"; |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 68 | private static final String KEY_GLOBAL = "global"; |
Amith Yamasani | 8823c0a8 | 2009-07-07 14:30:17 -0700 | [diff] [blame] | 69 | private static final String KEY_LOCALE = "locale"; |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 70 | |
Christopher Tate | a286f41 | 2009-09-18 15:51:15 -0700 | [diff] [blame] | 71 | // Versioning of the state file. Increment this version |
| 72 | // number any time the set of state items is altered. |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 73 | private static final int STATE_VERSION = 3; |
Christopher Tate | a286f41 | 2009-09-18 15:51:15 -0700 | [diff] [blame] | 74 | |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 75 | // Slots in the checksum array. Never insert new items in the middle |
| 76 | // of this array; new slots must be appended. |
Irfan Sheriff | 4aeca7c5 | 2011-03-10 16:53:33 -0800 | [diff] [blame] | 77 | private static final int STATE_SYSTEM = 0; |
| 78 | private static final int STATE_SECURE = 1; |
| 79 | private static final int STATE_LOCALE = 2; |
| 80 | private static final int STATE_WIFI_SUPPLICANT = 3; |
| 81 | private static final int STATE_WIFI_CONFIG = 4; |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 82 | private static final int STATE_GLOBAL = 5; |
| 83 | |
| 84 | private static final int STATE_SIZE = 6; // The current number of state items |
| 85 | |
| 86 | // Number of entries in the checksum array at various version numbers |
| 87 | private static final int STATE_SIZES[] = { |
| 88 | 0, |
| 89 | 4, // version 1 |
| 90 | 5, // version 2 added STATE_WIFI_CONFIG |
| 91 | STATE_SIZE // version 3 added STATE_GLOBAL |
| 92 | }; |
Amith Yamasani | d158214 | 2009-07-08 20:04:55 -0700 | [diff] [blame] | 93 | |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 94 | // Versioning of the 'full backup' format |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 95 | private static final int FULL_BACKUP_VERSION = 2; |
| 96 | private static final int FULL_BACKUP_ADDED_GLOBAL = 2; // added the "global" entry |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 97 | |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 98 | private static final int INTEGER_BYTE_COUNT = Integer.SIZE / Byte.SIZE; |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 99 | |
| 100 | private static final byte[] EMPTY_DATA = new byte[0]; |
| 101 | |
| 102 | private static final String TAG = "SettingsBackupAgent"; |
| 103 | |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 104 | private static final int COLUMN_NAME = 1; |
| 105 | private static final int COLUMN_VALUE = 2; |
| 106 | |
| 107 | private static final String[] PROJECTION = { |
| 108 | Settings.NameValueTable._ID, |
| 109 | Settings.NameValueTable.NAME, |
| 110 | Settings.NameValueTable.VALUE |
| 111 | }; |
| 112 | |
| 113 | private static final String FILE_WIFI_SUPPLICANT = "/data/misc/wifi/wpa_supplicant.conf"; |
Amith Yamasani | 2cfab84 | 2009-09-09 18:27:31 -0700 | [diff] [blame] | 114 | private static final String FILE_WIFI_SUPPLICANT_TEMPLATE = |
| 115 | "/system/etc/wifi/wpa_supplicant.conf"; |
Christian Sonntag | 92c1752 | 2009-08-07 15:16:17 -0700 | [diff] [blame] | 116 | |
| 117 | // the key to store the WIFI data under, should be sorted as last, so restore happens last. |
| 118 | // use very late unicode character to quasi-guarantee last sort position. |
Amith Yamasani | 2cfab84 | 2009-09-09 18:27:31 -0700 | [diff] [blame] | 119 | private static final String KEY_WIFI_SUPPLICANT = "\uffedWIFI"; |
Irfan Sheriff | 4aeca7c5 | 2011-03-10 16:53:33 -0800 | [diff] [blame] | 120 | private static final String KEY_WIFI_CONFIG = "\uffedCONFIG_WIFI"; |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 121 | |
Christopher Tate | 4a627c7 | 2011-04-01 14:43:32 -0700 | [diff] [blame] | 122 | // Name of the temporary file we use during full backup/restore. This is |
| 123 | // stored in the full-backup tarfile as well, so should not be changed. |
| 124 | private static final String STAGE_FILE = "flattened-data"; |
| 125 | |
Christopher Tate | d488bc0 | 2012-10-09 14:06:30 -0700 | [diff] [blame] | 126 | // Delay in milliseconds between the restore operation and when we will bounce |
| 127 | // wifi in order to rewrite the supplicant config etc. |
| 128 | private static final long WIFI_BOUNCE_DELAY_MILLIS = 60 * 1000; // one minute |
| 129 | |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 130 | private SettingsHelper mSettingsHelper; |
Irfan Sheriff | 4aeca7c5 | 2011-03-10 16:53:33 -0800 | [diff] [blame] | 131 | private WifiManager mWfm; |
| 132 | private static String mWifiConfigFile; |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 133 | |
Christopher Tate | d488bc0 | 2012-10-09 14:06:30 -0700 | [diff] [blame] | 134 | WifiRestoreRunnable mWifiRestore = null; |
| 135 | |
Christopher Tate | 8dfe2b9 | 2012-05-15 15:05:04 -0700 | [diff] [blame] | 136 | // Class for capturing a network definition from the wifi supplicant config file |
| 137 | static class Network { |
| 138 | String ssid = ""; // equals() and hashCode() need these to be non-null |
| 139 | String key_mgmt = ""; |
Vinit Deshapnde | 1d1319e | 2013-09-06 17:12:41 -0700 | [diff] [blame] | 140 | boolean certUsed = false; |
Christopher Tate | 8dfe2b9 | 2012-05-15 15:05:04 -0700 | [diff] [blame] | 141 | final ArrayList<String> rawLines = new ArrayList<String>(); |
| 142 | |
| 143 | public static Network readFromStream(BufferedReader in) { |
| 144 | final Network n = new Network(); |
| 145 | String line; |
| 146 | try { |
| 147 | while (in.ready()) { |
| 148 | line = in.readLine(); |
| 149 | if (line == null || line.startsWith("}")) { |
| 150 | break; |
| 151 | } |
| 152 | n.rememberLine(line); |
| 153 | } |
| 154 | } catch (IOException e) { |
| 155 | return null; |
| 156 | } |
| 157 | return n; |
| 158 | } |
| 159 | |
| 160 | void rememberLine(String line) { |
| 161 | // can't rely on particular whitespace patterns so strip leading/trailing |
| 162 | line = line.trim(); |
| 163 | if (line.isEmpty()) return; // only whitespace; drop the line |
| 164 | rawLines.add(line); |
| 165 | |
| 166 | // remember the ssid and key_mgmt lines for duplicate culling |
| 167 | if (line.startsWith("ssid")) { |
| 168 | ssid = line; |
| 169 | } else if (line.startsWith("key_mgmt")) { |
| 170 | key_mgmt = line; |
Vinit Deshapnde | 1d1319e | 2013-09-06 17:12:41 -0700 | [diff] [blame] | 171 | } else if (line.startsWith("client_cert=")) { |
| 172 | certUsed = true; |
| 173 | } else if (line.startsWith("ca_cert=")) { |
| 174 | certUsed = true; |
| 175 | } else if (line.startsWith("ca_path=")) { |
| 176 | certUsed = true; |
Christopher Tate | 8dfe2b9 | 2012-05-15 15:05:04 -0700 | [diff] [blame] | 177 | } |
| 178 | } |
| 179 | |
| 180 | public void write(Writer w) throws IOException { |
| 181 | w.write("\nnetwork={\n"); |
| 182 | for (String line : rawLines) { |
| 183 | w.write("\t" + line + "\n"); |
| 184 | } |
| 185 | w.write("}\n"); |
| 186 | } |
| 187 | |
| 188 | public void dump() { |
| 189 | Log.v(TAG, "network={"); |
| 190 | for (String line : rawLines) { |
| 191 | Log.v(TAG, " " + line); |
| 192 | } |
| 193 | Log.v(TAG, "}"); |
| 194 | } |
| 195 | |
| 196 | // Same approach as Pair.equals() and Pair.hashCode() |
| 197 | @Override |
| 198 | public boolean equals(Object o) { |
| 199 | if (o == this) return true; |
| 200 | if (!(o instanceof Network)) return false; |
| 201 | final Network other; |
| 202 | try { |
| 203 | other = (Network) o; |
| 204 | } catch (ClassCastException e) { |
| 205 | return false; |
| 206 | } |
| 207 | return ssid.equals(other.ssid) && key_mgmt.equals(other.key_mgmt); |
| 208 | } |
| 209 | |
| 210 | @Override |
| 211 | public int hashCode() { |
| 212 | int result = 17; |
| 213 | result = 31 * result + ssid.hashCode(); |
| 214 | result = 31 * result + key_mgmt.hashCode(); |
| 215 | return result; |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | // Ingest multiple wifi config file fragments, looking for network={} blocks |
| 220 | // and eliminating duplicates |
| 221 | class WifiNetworkSettings { |
| 222 | // One for fast lookup, one for maintaining ordering |
| 223 | final HashSet<Network> mKnownNetworks = new HashSet<Network>(); |
| 224 | final ArrayList<Network> mNetworks = new ArrayList<Network>(8); |
| 225 | |
| 226 | public void readNetworks(BufferedReader in) { |
| 227 | try { |
| 228 | String line; |
| 229 | while (in.ready()) { |
| 230 | line = in.readLine(); |
| 231 | if (line != null) { |
| 232 | // Parse out 'network=' decls so we can ignore duplicates |
| 233 | if (line.startsWith("network")) { |
| 234 | Network net = Network.readFromStream(in); |
| 235 | if (! mKnownNetworks.contains(net)) { |
| 236 | if (DEBUG_BACKUP) { |
| 237 | Log.v(TAG, "Adding " + net.ssid + " / " + net.key_mgmt); |
| 238 | } |
| 239 | mKnownNetworks.add(net); |
| 240 | mNetworks.add(net); |
| 241 | } else { |
| 242 | if (DEBUG_BACKUP) { |
| 243 | Log.v(TAG, "Dupe; skipped " + net.ssid + " / " + net.key_mgmt); |
| 244 | } |
| 245 | } |
| 246 | } |
| 247 | } |
| 248 | } |
| 249 | } catch (IOException e) { |
| 250 | // whatever happened, we're done now |
| 251 | } |
| 252 | } |
| 253 | |
| 254 | public void write(Writer w) throws IOException { |
| 255 | for (Network net : mNetworks) { |
Vinit Deshapnde | 1d1319e | 2013-09-06 17:12:41 -0700 | [diff] [blame] | 256 | if (net.certUsed) { |
| 257 | // Networks that use certificates for authentication can't be restored |
| 258 | // because the certificates they need don't get restored (because they |
| 259 | // are stored in keystore, and can't be restored) |
| 260 | continue; |
| 261 | } |
| 262 | |
Christopher Tate | 8dfe2b9 | 2012-05-15 15:05:04 -0700 | [diff] [blame] | 263 | net.write(w); |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | public void dump() { |
| 268 | for (Network net : mNetworks) { |
| 269 | net.dump(); |
| 270 | } |
| 271 | } |
| 272 | } |
| 273 | |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 274 | @Override |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 275 | public void onCreate() { |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 276 | if (DEBUG_BACKUP) Log.d(TAG, "onCreate() invoked"); |
| 277 | |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 278 | mSettingsHelper = new SettingsHelper(this); |
| 279 | super.onCreate(); |
Irfan Sheriff | 4aeca7c5 | 2011-03-10 16:53:33 -0800 | [diff] [blame] | 280 | |
| 281 | WifiManager mWfm = (WifiManager) getSystemService(Context.WIFI_SERVICE); |
| 282 | if (mWfm != null) mWifiConfigFile = mWfm.getConfigFile(); |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 283 | } |
| 284 | |
| 285 | @Override |
| 286 | public void onBackup(ParcelFileDescriptor oldState, BackupDataOutput data, |
| 287 | ParcelFileDescriptor newState) throws IOException { |
| 288 | |
| 289 | byte[] systemSettingsData = getSystemSettings(); |
| 290 | byte[] secureSettingsData = getSecureSettings(); |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 291 | byte[] globalSettingsData = getGlobalSettings(); |
Amith Yamasani | 8823c0a8 | 2009-07-07 14:30:17 -0700 | [diff] [blame] | 292 | byte[] locale = mSettingsHelper.getLocaleData(); |
Irfan Sheriff | 4aeca7c5 | 2011-03-10 16:53:33 -0800 | [diff] [blame] | 293 | byte[] wifiSupplicantData = getWifiSupplicant(FILE_WIFI_SUPPLICANT); |
| 294 | byte[] wifiConfigData = getFileData(mWifiConfigFile); |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 295 | |
Christopher Tate | 79ec80d | 2011-06-24 14:58:49 -0700 | [diff] [blame] | 296 | long[] stateChecksums = readOldChecksums(oldState); |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 297 | |
Christopher Tate | 79ec80d | 2011-06-24 14:58:49 -0700 | [diff] [blame] | 298 | stateChecksums[STATE_SYSTEM] = |
| 299 | writeIfChanged(stateChecksums[STATE_SYSTEM], KEY_SYSTEM, systemSettingsData, data); |
| 300 | stateChecksums[STATE_SECURE] = |
| 301 | writeIfChanged(stateChecksums[STATE_SECURE], KEY_SECURE, secureSettingsData, data); |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 302 | stateChecksums[STATE_GLOBAL] = |
Christopher Tate | 3543beb | 2012-10-05 13:35:12 -0700 | [diff] [blame] | 303 | writeIfChanged(stateChecksums[STATE_GLOBAL], KEY_GLOBAL, globalSettingsData, data); |
Christopher Tate | 79ec80d | 2011-06-24 14:58:49 -0700 | [diff] [blame] | 304 | stateChecksums[STATE_LOCALE] = |
| 305 | writeIfChanged(stateChecksums[STATE_LOCALE], KEY_LOCALE, locale, data); |
| 306 | stateChecksums[STATE_WIFI_SUPPLICANT] = |
| 307 | writeIfChanged(stateChecksums[STATE_WIFI_SUPPLICANT], KEY_WIFI_SUPPLICANT, |
| 308 | wifiSupplicantData, data); |
| 309 | stateChecksums[STATE_WIFI_CONFIG] = |
| 310 | writeIfChanged(stateChecksums[STATE_WIFI_CONFIG], KEY_WIFI_CONFIG, wifiConfigData, |
| 311 | data); |
Amith Yamasani | 8823c0a8 | 2009-07-07 14:30:17 -0700 | [diff] [blame] | 312 | |
Christopher Tate | 79ec80d | 2011-06-24 14:58:49 -0700 | [diff] [blame] | 313 | writeNewChecksums(stateChecksums, newState); |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 314 | } |
| 315 | |
Christopher Tate | d488bc0 | 2012-10-09 14:06:30 -0700 | [diff] [blame] | 316 | class WifiRestoreRunnable implements Runnable { |
| 317 | private byte[] restoredSupplicantData; |
| 318 | private byte[] restoredWifiConfigFile; |
| 319 | |
| 320 | void incorporateWifiSupplicant(BackupDataInput data) { |
| 321 | restoredSupplicantData = new byte[data.getDataSize()]; |
| 322 | if (restoredSupplicantData.length <= 0) return; |
| 323 | try { |
| 324 | data.readEntityData(restoredSupplicantData, 0, data.getDataSize()); |
| 325 | } catch (IOException e) { |
| 326 | Log.w(TAG, "Unable to read supplicant data"); |
| 327 | restoredSupplicantData = null; |
| 328 | } |
| 329 | } |
| 330 | |
| 331 | void incorporateWifiConfigFile(BackupDataInput data) { |
| 332 | restoredWifiConfigFile = new byte[data.getDataSize()]; |
| 333 | if (restoredWifiConfigFile.length <= 0) return; |
| 334 | try { |
| 335 | data.readEntityData(restoredWifiConfigFile, 0, data.getDataSize()); |
| 336 | } catch (IOException e) { |
| 337 | Log.w(TAG, "Unable to read config file"); |
| 338 | restoredWifiConfigFile = null; |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | @Override |
| 343 | public void run() { |
| 344 | if (restoredSupplicantData != null || restoredWifiConfigFile != null) { |
| 345 | if (DEBUG_BACKUP) { |
| 346 | Log.v(TAG, "Starting deferred restore of wifi data"); |
| 347 | } |
Christopher Tate | 87bc7e7 | 2013-06-10 16:55:02 -0700 | [diff] [blame] | 348 | final ContentResolver cr = getContentResolver(); |
| 349 | final int scanAlways = Settings.Global.getInt(cr, |
| 350 | Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0); |
Christopher Tate | d488bc0 | 2012-10-09 14:06:30 -0700 | [diff] [blame] | 351 | final int retainedWifiState = enableWifi(false); |
Christopher Tate | 87bc7e7 | 2013-06-10 16:55:02 -0700 | [diff] [blame] | 352 | if (scanAlways != 0) { |
| 353 | Settings.Global.putInt(cr, |
| 354 | Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0); |
Christopher Tate | 87bc7e7 | 2013-06-10 16:55:02 -0700 | [diff] [blame] | 355 | } |
Christopher Tate | 7274444 | 2014-09-19 17:03:59 -0700 | [diff] [blame] | 356 | // !!! Give the wifi stack a moment to quiesce |
| 357 | try { Thread.sleep(1500); } catch (InterruptedException e) {} |
Christopher Tate | d488bc0 | 2012-10-09 14:06:30 -0700 | [diff] [blame] | 358 | if (restoredSupplicantData != null) { |
| 359 | restoreWifiSupplicant(FILE_WIFI_SUPPLICANT, |
| 360 | restoredSupplicantData, restoredSupplicantData.length); |
| 361 | FileUtils.setPermissions(FILE_WIFI_SUPPLICANT, |
| 362 | FileUtils.S_IRUSR | FileUtils.S_IWUSR | |
| 363 | FileUtils.S_IRGRP | FileUtils.S_IWGRP, |
| 364 | Process.myUid(), Process.WIFI_UID); |
| 365 | } |
| 366 | if (restoredWifiConfigFile != null) { |
| 367 | restoreFileData(mWifiConfigFile, |
| 368 | restoredWifiConfigFile, restoredWifiConfigFile.length); |
| 369 | } |
| 370 | // restore the previous WIFI state. |
Christopher Tate | 87bc7e7 | 2013-06-10 16:55:02 -0700 | [diff] [blame] | 371 | if (scanAlways != 0) { |
| 372 | Settings.Global.putInt(cr, |
| 373 | Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, scanAlways); |
| 374 | } |
Christopher Tate | d488bc0 | 2012-10-09 14:06:30 -0700 | [diff] [blame] | 375 | enableWifi(retainedWifiState == WifiManager.WIFI_STATE_ENABLED || |
| 376 | retainedWifiState == WifiManager.WIFI_STATE_ENABLING); |
| 377 | } |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | // Instantiate the wifi-config restore runnable, scheduling it for execution |
| 382 | // a minute hence |
| 383 | void initWifiRestoreIfNecessary() { |
| 384 | if (mWifiRestore == null) { |
| 385 | mWifiRestore = new WifiRestoreRunnable(); |
| 386 | } |
| 387 | } |
| 388 | |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 389 | @Override |
| 390 | public void onRestore(BackupDataInput data, int appVersionCode, |
| 391 | ParcelFileDescriptor newState) throws IOException { |
| 392 | |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 393 | HashSet<String> movedToGlobal = new HashSet<String>(); |
| 394 | Settings.System.getMovedKeys(movedToGlobal); |
| 395 | Settings.Secure.getMovedKeys(movedToGlobal); |
| 396 | |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 397 | while (data.readNextHeader()) { |
| 398 | final String key = data.getKey(); |
Amith Yamasani | 8823c0a8 | 2009-07-07 14:30:17 -0700 | [diff] [blame] | 399 | final int size = data.getDataSize(); |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 400 | if (KEY_SYSTEM.equals(key)) { |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 401 | restoreSettings(data, Settings.System.CONTENT_URI, movedToGlobal); |
Amith Yamasani | d158214 | 2009-07-08 20:04:55 -0700 | [diff] [blame] | 402 | mSettingsHelper.applyAudioSettings(); |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 403 | } else if (KEY_SECURE.equals(key)) { |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 404 | restoreSettings(data, Settings.Secure.CONTENT_URI, movedToGlobal); |
Christopher Tate | 3543beb | 2012-10-05 13:35:12 -0700 | [diff] [blame] | 405 | } else if (KEY_GLOBAL.equals(key)) { |
| 406 | restoreSettings(data, Settings.Global.CONTENT_URI, null); |
Christopher Tate | d488bc0 | 2012-10-09 14:06:30 -0700 | [diff] [blame] | 407 | } else if (KEY_WIFI_SUPPLICANT.equals(key)) { |
| 408 | initWifiRestoreIfNecessary(); |
| 409 | mWifiRestore.incorporateWifiSupplicant(data); |
Amith Yamasani | 8823c0a8 | 2009-07-07 14:30:17 -0700 | [diff] [blame] | 410 | } else if (KEY_LOCALE.equals(key)) { |
| 411 | byte[] localeData = new byte[size]; |
| 412 | data.readEntityData(localeData, 0, size); |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 413 | mSettingsHelper.setLocaleData(localeData, size); |
Christopher Tate | d488bc0 | 2012-10-09 14:06:30 -0700 | [diff] [blame] | 414 | } else if (KEY_WIFI_CONFIG.equals(key)) { |
| 415 | initWifiRestoreIfNecessary(); |
| 416 | mWifiRestore.incorporateWifiConfigFile(data); |
Irfan Sheriff | 4aeca7c5 | 2011-03-10 16:53:33 -0800 | [diff] [blame] | 417 | } else { |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 418 | data.skipEntityData(); |
| 419 | } |
| 420 | } |
Christopher Tate | d488bc0 | 2012-10-09 14:06:30 -0700 | [diff] [blame] | 421 | |
| 422 | // If we have wifi data to restore, post a runnable to perform the |
| 423 | // bounce-and-update operation a little ways in the future. |
| 424 | if (mWifiRestore != null) { |
Evan Charlton | cc7b043 | 2014-01-14 14:47:11 -0800 | [diff] [blame] | 425 | long wifiBounceDelayMillis = Settings.Global.getLong( |
| 426 | getContentResolver(), |
| 427 | Settings.Global.WIFI_BOUNCE_DELAY_OVERRIDE_MS, |
| 428 | WIFI_BOUNCE_DELAY_MILLIS); |
| 429 | new Handler(getMainLooper()).postDelayed(mWifiRestore, wifiBounceDelayMillis); |
Christopher Tate | d488bc0 | 2012-10-09 14:06:30 -0700 | [diff] [blame] | 430 | } |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 431 | } |
| 432 | |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 433 | @Override |
Christopher Tate | 79ec80d | 2011-06-24 14:58:49 -0700 | [diff] [blame] | 434 | public void onFullBackup(FullBackupDataOutput data) throws IOException { |
| 435 | byte[] systemSettingsData = getSystemSettings(); |
| 436 | byte[] secureSettingsData = getSecureSettings(); |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 437 | byte[] globalSettingsData = getGlobalSettings(); |
Christopher Tate | 79ec80d | 2011-06-24 14:58:49 -0700 | [diff] [blame] | 438 | byte[] locale = mSettingsHelper.getLocaleData(); |
| 439 | byte[] wifiSupplicantData = getWifiSupplicant(FILE_WIFI_SUPPLICANT); |
| 440 | byte[] wifiConfigData = getFileData(mWifiConfigFile); |
| 441 | |
| 442 | // Write the data to the staging file, then emit that as our tarfile |
| 443 | // representation of the backed-up settings. |
| 444 | String root = getFilesDir().getAbsolutePath(); |
| 445 | File stage = new File(root, STAGE_FILE); |
| 446 | try { |
| 447 | FileOutputStream filestream = new FileOutputStream(stage); |
| 448 | BufferedOutputStream bufstream = new BufferedOutputStream(filestream); |
| 449 | DataOutputStream out = new DataOutputStream(bufstream); |
| 450 | |
Christopher Tate | 2efd2db | 2011-07-19 16:32:49 -0700 | [diff] [blame] | 451 | if (DEBUG_BACKUP) Log.d(TAG, "Writing flattened data version " + FULL_BACKUP_VERSION); |
Christopher Tate | 79ec80d | 2011-06-24 14:58:49 -0700 | [diff] [blame] | 452 | out.writeInt(FULL_BACKUP_VERSION); |
| 453 | |
Christopher Tate | 2efd2db | 2011-07-19 16:32:49 -0700 | [diff] [blame] | 454 | if (DEBUG_BACKUP) Log.d(TAG, systemSettingsData.length + " bytes of settings data"); |
Christopher Tate | 79ec80d | 2011-06-24 14:58:49 -0700 | [diff] [blame] | 455 | out.writeInt(systemSettingsData.length); |
| 456 | out.write(systemSettingsData); |
Christopher Tate | 2efd2db | 2011-07-19 16:32:49 -0700 | [diff] [blame] | 457 | if (DEBUG_BACKUP) Log.d(TAG, secureSettingsData.length + " bytes of secure settings data"); |
Christopher Tate | 79ec80d | 2011-06-24 14:58:49 -0700 | [diff] [blame] | 458 | out.writeInt(secureSettingsData.length); |
| 459 | out.write(secureSettingsData); |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 460 | if (DEBUG_BACKUP) Log.d(TAG, globalSettingsData.length + " bytes of global settings data"); |
| 461 | out.writeInt(globalSettingsData.length); |
| 462 | out.write(globalSettingsData); |
Christopher Tate | 2efd2db | 2011-07-19 16:32:49 -0700 | [diff] [blame] | 463 | if (DEBUG_BACKUP) Log.d(TAG, locale.length + " bytes of locale data"); |
Christopher Tate | 79ec80d | 2011-06-24 14:58:49 -0700 | [diff] [blame] | 464 | out.writeInt(locale.length); |
| 465 | out.write(locale); |
Christopher Tate | 2efd2db | 2011-07-19 16:32:49 -0700 | [diff] [blame] | 466 | if (DEBUG_BACKUP) Log.d(TAG, wifiSupplicantData.length + " bytes of wifi supplicant data"); |
Christopher Tate | 79ec80d | 2011-06-24 14:58:49 -0700 | [diff] [blame] | 467 | out.writeInt(wifiSupplicantData.length); |
| 468 | out.write(wifiSupplicantData); |
Christopher Tate | 2efd2db | 2011-07-19 16:32:49 -0700 | [diff] [blame] | 469 | if (DEBUG_BACKUP) Log.d(TAG, wifiConfigData.length + " bytes of wifi config data"); |
Christopher Tate | 79ec80d | 2011-06-24 14:58:49 -0700 | [diff] [blame] | 470 | out.writeInt(wifiConfigData.length); |
| 471 | out.write(wifiConfigData); |
| 472 | |
| 473 | out.flush(); // also flushes downstream |
| 474 | |
| 475 | // now we're set to emit the tar stream |
| 476 | fullBackupFile(stage, data); |
| 477 | } finally { |
| 478 | stage.delete(); |
| 479 | } |
| 480 | } |
| 481 | |
| 482 | @Override |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 483 | public void onRestoreFile(ParcelFileDescriptor data, long size, |
| 484 | int type, String domain, String relpath, long mode, long mtime) |
| 485 | throws IOException { |
| 486 | if (DEBUG_BACKUP) Log.d(TAG, "onRestoreFile() invoked"); |
| 487 | // Our data is actually a blob of flattened settings data identical to that |
| 488 | // produced during incremental backups. Just unpack and apply it all in |
| 489 | // turn. |
| 490 | FileInputStream instream = new FileInputStream(data.getFileDescriptor()); |
| 491 | DataInputStream in = new DataInputStream(instream); |
| 492 | |
| 493 | int version = in.readInt(); |
| 494 | if (DEBUG_BACKUP) Log.d(TAG, "Flattened data version " + version); |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 495 | if (version <= FULL_BACKUP_VERSION) { |
| 496 | // Generate the moved-to-global lookup table |
| 497 | HashSet<String> movedToGlobal = new HashSet<String>(); |
| 498 | Settings.System.getMovedKeys(movedToGlobal); |
| 499 | Settings.Secure.getMovedKeys(movedToGlobal); |
| 500 | |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 501 | // system settings data first |
| 502 | int nBytes = in.readInt(); |
| 503 | if (DEBUG_BACKUP) Log.d(TAG, nBytes + " bytes of settings data"); |
| 504 | byte[] buffer = new byte[nBytes]; |
Christopher Tate | 2efd2db | 2011-07-19 16:32:49 -0700 | [diff] [blame] | 505 | in.readFully(buffer, 0, nBytes); |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 506 | restoreSettings(buffer, nBytes, Settings.System.CONTENT_URI, movedToGlobal); |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 507 | |
| 508 | // secure settings |
| 509 | nBytes = in.readInt(); |
| 510 | if (DEBUG_BACKUP) Log.d(TAG, nBytes + " bytes of secure settings data"); |
| 511 | if (nBytes > buffer.length) buffer = new byte[nBytes]; |
Christopher Tate | 2efd2db | 2011-07-19 16:32:49 -0700 | [diff] [blame] | 512 | in.readFully(buffer, 0, nBytes); |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 513 | restoreSettings(buffer, nBytes, Settings.Secure.CONTENT_URI, movedToGlobal); |
| 514 | |
| 515 | // Global only if sufficiently new |
| 516 | if (version >= FULL_BACKUP_ADDED_GLOBAL) { |
| 517 | nBytes = in.readInt(); |
| 518 | if (DEBUG_BACKUP) Log.d(TAG, nBytes + " bytes of global settings data"); |
| 519 | if (nBytes > buffer.length) buffer = new byte[nBytes]; |
| 520 | in.readFully(buffer, 0, nBytes); |
| 521 | movedToGlobal.clear(); // no redirection; this *is* the global namespace |
| 522 | restoreSettings(buffer, nBytes, Settings.Global.CONTENT_URI, movedToGlobal); |
| 523 | } |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 524 | |
| 525 | // locale |
| 526 | nBytes = in.readInt(); |
| 527 | if (DEBUG_BACKUP) Log.d(TAG, nBytes + " bytes of locale data"); |
| 528 | if (nBytes > buffer.length) buffer = new byte[nBytes]; |
Christopher Tate | 2efd2db | 2011-07-19 16:32:49 -0700 | [diff] [blame] | 529 | in.readFully(buffer, 0, nBytes); |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 530 | mSettingsHelper.setLocaleData(buffer, nBytes); |
| 531 | |
| 532 | // wifi supplicant |
| 533 | nBytes = in.readInt(); |
| 534 | if (DEBUG_BACKUP) Log.d(TAG, nBytes + " bytes of wifi supplicant data"); |
| 535 | if (nBytes > buffer.length) buffer = new byte[nBytes]; |
Christopher Tate | 2efd2db | 2011-07-19 16:32:49 -0700 | [diff] [blame] | 536 | in.readFully(buffer, 0, nBytes); |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 537 | int retainedWifiState = enableWifi(false); |
| 538 | restoreWifiSupplicant(FILE_WIFI_SUPPLICANT, buffer, nBytes); |
| 539 | FileUtils.setPermissions(FILE_WIFI_SUPPLICANT, |
| 540 | FileUtils.S_IRUSR | FileUtils.S_IWUSR | |
| 541 | FileUtils.S_IRGRP | FileUtils.S_IWGRP, |
| 542 | Process.myUid(), Process.WIFI_UID); |
| 543 | // retain the previous WIFI state. |
| 544 | enableWifi(retainedWifiState == WifiManager.WIFI_STATE_ENABLED || |
| 545 | retainedWifiState == WifiManager.WIFI_STATE_ENABLING); |
| 546 | |
| 547 | // wifi config |
| 548 | nBytes = in.readInt(); |
| 549 | if (DEBUG_BACKUP) Log.d(TAG, nBytes + " bytes of wifi config data"); |
| 550 | if (nBytes > buffer.length) buffer = new byte[nBytes]; |
Christopher Tate | 2efd2db | 2011-07-19 16:32:49 -0700 | [diff] [blame] | 551 | in.readFully(buffer, 0, nBytes); |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 552 | restoreFileData(mWifiConfigFile, buffer, nBytes); |
| 553 | |
| 554 | if (DEBUG_BACKUP) Log.d(TAG, "Full restore complete."); |
| 555 | } else { |
| 556 | data.close(); |
| 557 | throw new IOException("Invalid file schema"); |
| 558 | } |
| 559 | } |
| 560 | |
Amith Yamasani | d158214 | 2009-07-08 20:04:55 -0700 | [diff] [blame] | 561 | private long[] readOldChecksums(ParcelFileDescriptor oldState) throws IOException { |
| 562 | long[] stateChecksums = new long[STATE_SIZE]; |
| 563 | |
| 564 | DataInputStream dataInput = new DataInputStream( |
| 565 | new FileInputStream(oldState.getFileDescriptor())); |
Christopher Tate | a286f41 | 2009-09-18 15:51:15 -0700 | [diff] [blame] | 566 | |
| 567 | try { |
| 568 | int stateVersion = dataInput.readInt(); |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 569 | for (int i = 0; i < STATE_SIZES[stateVersion]; i++) { |
| 570 | stateChecksums[i] = dataInput.readLong(); |
Amith Yamasani | d158214 | 2009-07-08 20:04:55 -0700 | [diff] [blame] | 571 | } |
Christopher Tate | a286f41 | 2009-09-18 15:51:15 -0700 | [diff] [blame] | 572 | } catch (EOFException eof) { |
| 573 | // With the default 0 checksum we'll wind up forcing a backup of |
| 574 | // any unhandled data sets, which is appropriate. |
Amith Yamasani | d158214 | 2009-07-08 20:04:55 -0700 | [diff] [blame] | 575 | } |
| 576 | dataInput.close(); |
| 577 | return stateChecksums; |
| 578 | } |
| 579 | |
| 580 | private void writeNewChecksums(long[] checksums, ParcelFileDescriptor newState) |
| 581 | throws IOException { |
| 582 | DataOutputStream dataOutput = new DataOutputStream( |
Marvin Paul | 6879555 | 2014-12-16 14:12:33 -0800 | [diff] [blame^] | 583 | new BufferedOutputStream(new FileOutputStream(newState.getFileDescriptor()))); |
Christopher Tate | a286f41 | 2009-09-18 15:51:15 -0700 | [diff] [blame] | 584 | |
| 585 | dataOutput.writeInt(STATE_VERSION); |
Amith Yamasani | d158214 | 2009-07-08 20:04:55 -0700 | [diff] [blame] | 586 | for (int i = 0; i < STATE_SIZE; i++) { |
| 587 | dataOutput.writeLong(checksums[i]); |
| 588 | } |
| 589 | dataOutput.close(); |
| 590 | } |
| 591 | |
| 592 | private long writeIfChanged(long oldChecksum, String key, byte[] data, |
| 593 | BackupDataOutput output) { |
| 594 | CRC32 checkSummer = new CRC32(); |
| 595 | checkSummer.update(data); |
| 596 | long newChecksum = checkSummer.getValue(); |
| 597 | if (oldChecksum == newChecksum) { |
| 598 | return oldChecksum; |
| 599 | } |
| 600 | try { |
| 601 | output.writeEntityHeader(key, data.length); |
| 602 | output.writeEntityData(data, data.length); |
| 603 | } catch (IOException ioe) { |
| 604 | // Bail |
| 605 | } |
| 606 | return newChecksum; |
| 607 | } |
| 608 | |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 609 | private byte[] getSystemSettings() { |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 610 | Cursor cursor = getContentResolver().query(Settings.System.CONTENT_URI, PROJECTION, null, |
| 611 | null, null); |
Jeff Brown | 1d8e7d6 | 2011-10-09 15:24:53 -0700 | [diff] [blame] | 612 | try { |
| 613 | return extractRelevantValues(cursor, Settings.System.SETTINGS_TO_BACKUP); |
| 614 | } finally { |
| 615 | cursor.close(); |
| 616 | } |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 617 | } |
| 618 | |
| 619 | private byte[] getSecureSettings() { |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 620 | Cursor cursor = getContentResolver().query(Settings.Secure.CONTENT_URI, PROJECTION, null, |
| 621 | null, null); |
Jeff Brown | 1d8e7d6 | 2011-10-09 15:24:53 -0700 | [diff] [blame] | 622 | try { |
| 623 | return extractRelevantValues(cursor, Settings.Secure.SETTINGS_TO_BACKUP); |
| 624 | } finally { |
| 625 | cursor.close(); |
| 626 | } |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 627 | } |
| 628 | |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 629 | private byte[] getGlobalSettings() { |
| 630 | Cursor cursor = getContentResolver().query(Settings.Global.CONTENT_URI, PROJECTION, null, |
| 631 | null, null); |
| 632 | try { |
| 633 | return extractRelevantValues(cursor, Settings.Global.SETTINGS_TO_BACKUP); |
| 634 | } finally { |
| 635 | cursor.close(); |
| 636 | } |
| 637 | } |
| 638 | |
| 639 | private void restoreSettings(BackupDataInput data, Uri contentUri, |
| 640 | HashSet<String> movedToGlobal) { |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 641 | byte[] settings = new byte[data.getDataSize()]; |
| 642 | try { |
| 643 | data.readEntityData(settings, 0, settings.length); |
| 644 | } catch (IOException ioe) { |
| 645 | Log.e(TAG, "Couldn't read entity data"); |
| 646 | return; |
| 647 | } |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 648 | restoreSettings(settings, settings.length, contentUri, movedToGlobal); |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 649 | } |
| 650 | |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 651 | private void restoreSettings(byte[] settings, int bytes, Uri contentUri, |
| 652 | HashSet<String> movedToGlobal) { |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 653 | if (DEBUG) { |
| 654 | Log.i(TAG, "restoreSettings: " + contentUri); |
| 655 | } |
| 656 | |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 657 | // Figure out the white list and redirects to the global table. |
Christopher Tate | 796e0f0 | 2009-09-22 11:57:58 -0700 | [diff] [blame] | 658 | String[] whitelist = null; |
| 659 | if (contentUri.equals(Settings.Secure.CONTENT_URI)) { |
| 660 | whitelist = Settings.Secure.SETTINGS_TO_BACKUP; |
| 661 | } else if (contentUri.equals(Settings.System.CONTENT_URI)) { |
| 662 | whitelist = Settings.System.SETTINGS_TO_BACKUP; |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 663 | } else if (contentUri.equals(Settings.Global.CONTENT_URI)) { |
| 664 | whitelist = Settings.Global.SETTINGS_TO_BACKUP; |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 665 | } else { |
| 666 | throw new IllegalArgumentException("Unknown URI: " + contentUri); |
Christopher Tate | 796e0f0 | 2009-09-22 11:57:58 -0700 | [diff] [blame] | 667 | } |
| 668 | |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 669 | // Restore only the white list data. |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 670 | int pos = 0; |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 671 | Map<String, String> cachedEntries = new HashMap<String, String>(); |
| 672 | ContentValues contentValues = new ContentValues(2); |
| 673 | SettingsHelper settingsHelper = mSettingsHelper; |
Christopher Tate | 0738e88 | 2009-09-11 16:35:39 -0700 | [diff] [blame] | 674 | |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 675 | final int whiteListSize = whitelist.length; |
| 676 | for (int i = 0; i < whiteListSize; i++) { |
| 677 | String key = whitelist[i]; |
| 678 | String value = cachedEntries.remove(key); |
Christopher Tate | 0738e88 | 2009-09-11 16:35:39 -0700 | [diff] [blame] | 679 | |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 680 | // If the value not cached, let us look it up. |
| 681 | if (value == null) { |
| 682 | while (pos < bytes) { |
| 683 | int length = readInt(settings, pos); |
| 684 | pos += INTEGER_BYTE_COUNT; |
| 685 | String dataKey = length > 0 ? new String(settings, pos, length) : null; |
| 686 | pos += length; |
| 687 | length = readInt(settings, pos); |
| 688 | pos += INTEGER_BYTE_COUNT; |
| 689 | String dataValue = length > 0 ? new String(settings, pos, length) : null; |
| 690 | pos += length; |
| 691 | if (key.equals(dataKey)) { |
| 692 | value = dataValue; |
| 693 | break; |
| 694 | } |
| 695 | cachedEntries.put(dataKey, dataValue); |
Amith Yamasani | 70c874b | 2009-07-06 14:53:25 -0700 | [diff] [blame] | 696 | } |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 697 | } |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 698 | |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 699 | if (value == null) { |
| 700 | continue; |
| 701 | } |
Christopher Tate | 796e0f0 | 2009-09-22 11:57:58 -0700 | [diff] [blame] | 702 | |
Christopher Tate | 3543beb | 2012-10-05 13:35:12 -0700 | [diff] [blame] | 703 | final Uri destination = (movedToGlobal != null && movedToGlobal.contains(key)) |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 704 | ? Settings.Global.CONTENT_URI |
| 705 | : contentUri; |
| 706 | |
| 707 | // The helper doesn't care what namespace the keys are in |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 708 | if (settingsHelper.restoreValue(key, value)) { |
| 709 | contentValues.clear(); |
| 710 | contentValues.put(Settings.NameValueTable.NAME, key); |
| 711 | contentValues.put(Settings.NameValueTable.VALUE, value); |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 712 | getContentResolver().insert(destination, contentValues); |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 713 | } |
| 714 | |
Christopher Tate | d488bc0 | 2012-10-09 14:06:30 -0700 | [diff] [blame] | 715 | if (DEBUG) { |
Christopher Tate | 66488d6 | 2012-10-02 11:58:01 -0700 | [diff] [blame] | 716 | Log.d(TAG, "Restored setting: " + destination + " : "+ key + "=" + value); |
Christopher Tate | 0738e88 | 2009-09-11 16:35:39 -0700 | [diff] [blame] | 717 | } |
| 718 | } |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 719 | } |
| 720 | |
| 721 | /** |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 722 | * Given a cursor and a set of keys, extract the required keys and |
| 723 | * values and write them to a byte array. |
| 724 | * |
| 725 | * @param cursor A cursor with settings data. |
| 726 | * @param settings The settings to extract. |
| 727 | * @return The byte array of extracted values. |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 728 | */ |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 729 | private byte[] extractRelevantValues(Cursor cursor, String[] settings) { |
| 730 | final int settingsCount = settings.length; |
| 731 | byte[][] values = new byte[settingsCount * 2][]; // keys and values |
| 732 | if (!cursor.moveToFirst()) { |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 733 | Log.e(TAG, "Couldn't read from the cursor"); |
| 734 | return new byte[0]; |
| 735 | } |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 736 | |
| 737 | // Obtain the relevant data in a temporary array. |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 738 | int totalSize = 0; |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 739 | int backedUpSettingIndex = 0; |
| 740 | Map<String, String> cachedEntries = new HashMap<String, String>(); |
| 741 | for (int i = 0; i < settingsCount; i++) { |
| 742 | String key = settings[i]; |
| 743 | String value = cachedEntries.remove(key); |
| 744 | |
| 745 | // If the value not cached, let us look it up. |
| 746 | if (value == null) { |
| 747 | while (!cursor.isAfterLast()) { |
| 748 | String cursorKey = cursor.getString(COLUMN_NAME); |
| 749 | String cursorValue = cursor.getString(COLUMN_VALUE); |
| 750 | cursor.moveToNext(); |
| 751 | if (key.equals(cursorKey)) { |
| 752 | value = cursorValue; |
| 753 | break; |
| 754 | } |
| 755 | cachedEntries.put(cursorKey, cursorValue); |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 756 | } |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 757 | } |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 758 | |
Amith Yamasani | 622bf222 | 2013-09-06 13:54:28 -0700 | [diff] [blame] | 759 | // Intercept the keys and see if they need special handling |
| 760 | value = mSettingsHelper.onBackupValue(key, value); |
| 761 | |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 762 | if (value == null) { |
| 763 | continue; |
| 764 | } |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 765 | // Write the key and value in the intermediary array. |
| 766 | byte[] keyBytes = key.getBytes(); |
| 767 | totalSize += INTEGER_BYTE_COUNT + keyBytes.length; |
| 768 | values[backedUpSettingIndex * 2] = keyBytes; |
| 769 | |
| 770 | byte[] valueBytes = value.getBytes(); |
| 771 | totalSize += INTEGER_BYTE_COUNT + valueBytes.length; |
| 772 | values[backedUpSettingIndex * 2 + 1] = valueBytes; |
| 773 | |
| 774 | backedUpSettingIndex++; |
| 775 | |
| 776 | if (DEBUG) { |
| 777 | Log.d(TAG, "Backed up setting: " + key + "=" + value); |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 778 | } |
| 779 | } |
| 780 | |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 781 | // Aggregate the result. |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 782 | byte[] result = new byte[totalSize]; |
| 783 | int pos = 0; |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 784 | final int keyValuePairCount = backedUpSettingIndex * 2; |
| 785 | for (int i = 0; i < keyValuePairCount; i++) { |
| 786 | pos = writeInt(result, pos, values[i].length); |
| 787 | pos = writeBytes(result, pos, values[i]); |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 788 | } |
| 789 | return result; |
| 790 | } |
| 791 | |
Irfan Sheriff | 4aeca7c5 | 2011-03-10 16:53:33 -0800 | [diff] [blame] | 792 | private byte[] getFileData(String filename) { |
| 793 | InputStream is = null; |
| 794 | try { |
| 795 | File file = new File(filename); |
| 796 | is = new FileInputStream(file); |
| 797 | |
| 798 | //Will truncate read on a very long file, |
| 799 | //should not happen for a config file |
| 800 | byte[] bytes = new byte[(int)file.length()]; |
| 801 | |
| 802 | int offset = 0; |
| 803 | int numRead = 0; |
| 804 | while (offset < bytes.length |
| 805 | && (numRead=is.read(bytes, offset, bytes.length-offset)) >= 0) { |
| 806 | offset += numRead; |
| 807 | } |
| 808 | |
| 809 | //read failure |
| 810 | if (offset < bytes.length) { |
| 811 | Log.w(TAG, "Couldn't backup " + filename); |
| 812 | return EMPTY_DATA; |
| 813 | } |
| 814 | return bytes; |
| 815 | } catch (IOException ioe) { |
| 816 | Log.w(TAG, "Couldn't backup " + filename); |
| 817 | return EMPTY_DATA; |
| 818 | } finally { |
| 819 | if (is != null) { |
| 820 | try { |
| 821 | is.close(); |
| 822 | } catch (IOException e) { |
| 823 | } |
| 824 | } |
| 825 | } |
| 826 | |
| 827 | } |
| 828 | |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 829 | private void restoreFileData(String filename, byte[] bytes, int size) { |
Irfan Sheriff | 4aeca7c5 | 2011-03-10 16:53:33 -0800 | [diff] [blame] | 830 | try { |
Irfan Sheriff | 4aeca7c5 | 2011-03-10 16:53:33 -0800 | [diff] [blame] | 831 | File file = new File(filename); |
| 832 | if (file.exists()) file.delete(); |
| 833 | |
| 834 | OutputStream os = new BufferedOutputStream(new FileOutputStream(filename, true)); |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 835 | os.write(bytes, 0, size); |
Irfan Sheriff | 4aeca7c5 | 2011-03-10 16:53:33 -0800 | [diff] [blame] | 836 | os.close(); |
| 837 | } catch (IOException ioe) { |
| 838 | Log.w(TAG, "Couldn't restore " + filename); |
| 839 | } |
| 840 | } |
| 841 | |
| 842 | |
Amith Yamasani | 2cfab84 | 2009-09-09 18:27:31 -0700 | [diff] [blame] | 843 | private byte[] getWifiSupplicant(String filename) { |
Brad Fitzpatrick | 7078789 | 2010-11-17 11:31:12 -0800 | [diff] [blame] | 844 | BufferedReader br = null; |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 845 | try { |
| 846 | File file = new File(filename); |
| 847 | if (file.exists()) { |
Brad Fitzpatrick | 7078789 | 2010-11-17 11:31:12 -0800 | [diff] [blame] | 848 | br = new BufferedReader(new FileReader(file)); |
Amith Yamasani | 2cfab84 | 2009-09-09 18:27:31 -0700 | [diff] [blame] | 849 | StringBuffer relevantLines = new StringBuffer(); |
| 850 | boolean started = false; |
| 851 | String line; |
| 852 | while ((line = br.readLine()) != null) { |
| 853 | if (!started && line.startsWith("network")) { |
| 854 | started = true; |
| 855 | } |
| 856 | if (started) { |
| 857 | relevantLines.append(line).append("\n"); |
| 858 | } |
| 859 | } |
| 860 | if (relevantLines.length() > 0) { |
| 861 | return relevantLines.toString().getBytes(); |
| 862 | } else { |
| 863 | return EMPTY_DATA; |
| 864 | } |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 865 | } else { |
Amith Yamasani | d158214 | 2009-07-08 20:04:55 -0700 | [diff] [blame] | 866 | return EMPTY_DATA; |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 867 | } |
| 868 | } catch (IOException ioe) { |
| 869 | Log.w(TAG, "Couldn't backup " + filename); |
Amith Yamasani | d158214 | 2009-07-08 20:04:55 -0700 | [diff] [blame] | 870 | return EMPTY_DATA; |
Brad Fitzpatrick | 7078789 | 2010-11-17 11:31:12 -0800 | [diff] [blame] | 871 | } finally { |
| 872 | if (br != null) { |
| 873 | try { |
| 874 | br.close(); |
| 875 | } catch (IOException e) { |
| 876 | } |
| 877 | } |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 878 | } |
| 879 | } |
| 880 | |
Christopher Tate | 75a9970 | 2011-05-18 16:28:19 -0700 | [diff] [blame] | 881 | private void restoreWifiSupplicant(String filename, byte[] bytes, int size) { |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 882 | try { |
Christopher Tate | 8dfe2b9 | 2012-05-15 15:05:04 -0700 | [diff] [blame] | 883 | WifiNetworkSettings supplicantImage = new WifiNetworkSettings(); |
Amith Yamasani | 2cfab84 | 2009-09-09 18:27:31 -0700 | [diff] [blame] | 884 | |
Christopher Tate | 8dfe2b9 | 2012-05-15 15:05:04 -0700 | [diff] [blame] | 885 | File supplicantFile = new File(FILE_WIFI_SUPPLICANT); |
| 886 | if (supplicantFile.exists()) { |
| 887 | // Retain the existing APs; we'll append the restored ones to them |
| 888 | BufferedReader in = new BufferedReader(new FileReader(FILE_WIFI_SUPPLICANT)); |
| 889 | supplicantImage.readNetworks(in); |
| 890 | in.close(); |
| 891 | |
| 892 | supplicantFile.delete(); |
| 893 | } |
| 894 | |
| 895 | // Incorporate the restore AP information |
| 896 | if (size > 0) { |
| 897 | char[] restoredAsBytes = new char[size]; |
| 898 | for (int i = 0; i < size; i++) restoredAsBytes[i] = (char) bytes[i]; |
| 899 | BufferedReader in = new BufferedReader(new CharArrayReader(restoredAsBytes)); |
| 900 | supplicantImage.readNetworks(in); |
| 901 | |
| 902 | if (DEBUG_BACKUP) { |
| 903 | Log.v(TAG, "Final AP list:"); |
| 904 | supplicantImage.dump(); |
| 905 | } |
| 906 | } |
| 907 | |
| 908 | // Install the correct default template |
| 909 | BufferedWriter bw = new BufferedWriter(new FileWriter(FILE_WIFI_SUPPLICANT)); |
| 910 | copyWifiSupplicantTemplate(bw); |
| 911 | |
| 912 | // Write the restored supplicant config and we're done |
| 913 | supplicantImage.write(bw); |
| 914 | bw.close(); |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 915 | } catch (IOException ioe) { |
| 916 | Log.w(TAG, "Couldn't restore " + filename); |
| 917 | } |
| 918 | } |
| 919 | |
Christopher Tate | 8dfe2b9 | 2012-05-15 15:05:04 -0700 | [diff] [blame] | 920 | private void copyWifiSupplicantTemplate(BufferedWriter bw) { |
Amith Yamasani | 2cfab84 | 2009-09-09 18:27:31 -0700 | [diff] [blame] | 921 | try { |
| 922 | BufferedReader br = new BufferedReader(new FileReader(FILE_WIFI_SUPPLICANT_TEMPLATE)); |
Amith Yamasani | 2cfab84 | 2009-09-09 18:27:31 -0700 | [diff] [blame] | 923 | char[] temp = new char[1024]; |
| 924 | int size; |
| 925 | while ((size = br.read(temp)) > 0) { |
| 926 | bw.write(temp, 0, size); |
| 927 | } |
Amith Yamasani | 2cfab84 | 2009-09-09 18:27:31 -0700 | [diff] [blame] | 928 | br.close(); |
| 929 | } catch (IOException ioe) { |
| 930 | Log.w(TAG, "Couldn't copy wpa_supplicant file"); |
| 931 | } |
| 932 | } |
| 933 | |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 934 | /** |
| 935 | * Write an int in BigEndian into the byte array. |
| 936 | * @param out byte array |
| 937 | * @param pos current pos in array |
| 938 | * @param value integer to write |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 939 | * @return the index after adding the size of an int (4) in bytes. |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 940 | */ |
| 941 | private int writeInt(byte[] out, int pos, int value) { |
| 942 | out[pos + 0] = (byte) ((value >> 24) & 0xFF); |
| 943 | out[pos + 1] = (byte) ((value >> 16) & 0xFF); |
| 944 | out[pos + 2] = (byte) ((value >> 8) & 0xFF); |
| 945 | out[pos + 3] = (byte) ((value >> 0) & 0xFF); |
Svetoslav Ganov | a571a58 | 2011-09-20 18:32:20 -0700 | [diff] [blame] | 946 | return pos + INTEGER_BYTE_COUNT; |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 947 | } |
| 948 | |
| 949 | private int writeBytes(byte[] out, int pos, byte[] value) { |
| 950 | System.arraycopy(value, 0, out, pos, value.length); |
| 951 | return pos + value.length; |
| 952 | } |
| 953 | |
| 954 | private int readInt(byte[] in, int pos) { |
| 955 | int result = |
| 956 | ((in[pos ] & 0xFF) << 24) | |
| 957 | ((in[pos + 1] & 0xFF) << 16) | |
| 958 | ((in[pos + 2] & 0xFF) << 8) | |
| 959 | ((in[pos + 3] & 0xFF) << 0); |
| 960 | return result; |
| 961 | } |
| 962 | |
Christian Sonntag | c5b5b0f | 2009-08-07 10:00:21 -0700 | [diff] [blame] | 963 | private int enableWifi(boolean enable) { |
Irfan Sheriff | 4f4f516 | 2012-04-27 14:42:42 -0700 | [diff] [blame] | 964 | if (mWfm == null) { |
| 965 | mWfm = (WifiManager) getSystemService(Context.WIFI_SERVICE); |
| 966 | } |
Irfan Sheriff | 4aeca7c5 | 2011-03-10 16:53:33 -0800 | [diff] [blame] | 967 | if (mWfm != null) { |
| 968 | int state = mWfm.getWifiState(); |
| 969 | mWfm.setWifiEnabled(enable); |
Christian Sonntag | c5b5b0f | 2009-08-07 10:00:21 -0700 | [diff] [blame] | 970 | return state; |
Irfan Sheriff | 4f4f516 | 2012-04-27 14:42:42 -0700 | [diff] [blame] | 971 | } else { |
| 972 | Log.e(TAG, "Failed to fetch WifiManager instance"); |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 973 | } |
Christian Sonntag | c5b5b0f | 2009-08-07 10:00:21 -0700 | [diff] [blame] | 974 | return WifiManager.WIFI_STATE_UNKNOWN; |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 975 | } |
Amith Yamasani | 220f4d6 | 2009-07-02 02:34:14 -0700 | [diff] [blame] | 976 | } |