Santos Cordon | 61cc930 | 2015-03-06 12:40:43 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 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 | |
Santos Cordon | 349e0f4 | 2015-10-09 12:50:27 -0700 | [diff] [blame] | 17 | package com.android.calllogbackup; |
Santos Cordon | 61cc930 | 2015-03-06 12:40:43 -0800 | [diff] [blame] | 18 | |
| 19 | import android.app.backup.BackupAgent; |
| 20 | import android.app.backup.BackupDataInput; |
| 21 | import android.app.backup.BackupDataOutput; |
| 22 | import android.content.ComponentName; |
| 23 | import android.content.ContentResolver; |
Santos Cordon | 349e0f4 | 2015-10-09 12:50:27 -0700 | [diff] [blame] | 24 | import android.content.Context; |
Santos Cordon | 61cc930 | 2015-03-06 12:40:43 -0800 | [diff] [blame] | 25 | import android.database.Cursor; |
| 26 | import android.os.ParcelFileDescriptor; |
| 27 | import android.os.UserHandle; |
| 28 | import android.os.UserManager; |
| 29 | import android.provider.CallLog; |
| 30 | import android.provider.CallLog.Calls; |
Santos Cordon | 349e0f4 | 2015-10-09 12:50:27 -0700 | [diff] [blame] | 31 | import android.provider.Settings; |
Santos Cordon | 61cc930 | 2015-03-06 12:40:43 -0800 | [diff] [blame] | 32 | import android.telecom.PhoneAccountHandle; |
| 33 | import android.util.Log; |
| 34 | |
| 35 | import com.android.internal.annotations.VisibleForTesting; |
| 36 | |
| 37 | import java.io.BufferedOutputStream; |
| 38 | import java.io.ByteArrayInputStream; |
| 39 | import java.io.ByteArrayOutputStream; |
| 40 | import java.io.DataInput; |
| 41 | import java.io.DataInputStream; |
| 42 | import java.io.DataOutput; |
| 43 | import java.io.DataOutputStream; |
| 44 | import java.io.EOFException; |
| 45 | import java.io.FileInputStream; |
| 46 | import java.io.FileOutputStream; |
| 47 | import java.io.IOException; |
| 48 | import java.util.LinkedList; |
| 49 | import java.util.List; |
| 50 | import java.util.SortedSet; |
| 51 | import java.util.TreeSet; |
| 52 | |
| 53 | /** |
| 54 | * Call log backup agent. |
| 55 | */ |
| 56 | public class CallLogBackupAgent extends BackupAgent { |
| 57 | |
| 58 | @VisibleForTesting |
| 59 | static class CallLogBackupState { |
| 60 | int version; |
| 61 | SortedSet<Integer> callIds; |
| 62 | } |
| 63 | |
| 64 | @VisibleForTesting |
| 65 | static class Call { |
| 66 | int id; |
| 67 | long date; |
| 68 | long duration; |
| 69 | String number; |
| 70 | int type; |
| 71 | int numberPresentation; |
| 72 | String accountComponentName; |
| 73 | String accountId; |
| 74 | String accountAddress; |
| 75 | Long dataUsage; |
| 76 | int features; |
| 77 | |
| 78 | @Override |
| 79 | public String toString() { |
| 80 | if (isDebug()) { |
| 81 | return "[" + id + ", account: [" + accountComponentName + " : " + accountId + |
| 82 | "]," + number + ", " + date + "]"; |
| 83 | } else { |
| 84 | return "[" + id + "]"; |
| 85 | } |
| 86 | } |
| 87 | } |
| 88 | |
Santos Cordon | f128d20 | 2015-07-14 17:13:16 -0700 | [diff] [blame] | 89 | static class OEMData { |
| 90 | String namespace; |
| 91 | byte[] bytes; |
| 92 | |
| 93 | public OEMData(String namespace, byte[] bytes) { |
| 94 | this.namespace = namespace; |
| 95 | this.bytes = bytes == null ? ZERO_BYTE_ARRAY : bytes; |
| 96 | } |
| 97 | } |
| 98 | |
Santos Cordon | 61cc930 | 2015-03-06 12:40:43 -0800 | [diff] [blame] | 99 | private static final String TAG = "CallLogBackupAgent"; |
| 100 | |
Santos Cordon | 349e0f4 | 2015-10-09 12:50:27 -0700 | [diff] [blame] | 101 | private static final String USER_FULL_DATA_BACKUP_AWARE = "user_full_data_backup_aware"; |
| 102 | |
Santos Cordon | 61cc930 | 2015-03-06 12:40:43 -0800 | [diff] [blame] | 103 | /** Current version of CallLogBackup. Used to track the backup format. */ |
| 104 | @VisibleForTesting |
Santos Cordon | f128d20 | 2015-07-14 17:13:16 -0700 | [diff] [blame] | 105 | static final int VERSION = 1002; |
Santos Cordon | 61cc930 | 2015-03-06 12:40:43 -0800 | [diff] [blame] | 106 | /** Version indicating that there exists no previous backup entry. */ |
| 107 | @VisibleForTesting |
| 108 | static final int VERSION_NO_PREVIOUS_STATE = 0; |
| 109 | |
Santos Cordon | f128d20 | 2015-07-14 17:13:16 -0700 | [diff] [blame] | 110 | static final String NO_OEM_NAMESPACE = "no-oem-namespace"; |
| 111 | |
| 112 | static final byte[] ZERO_BYTE_ARRAY = new byte[0]; |
| 113 | |
| 114 | static final int END_OEM_DATA_MARKER = 0x60061E; |
| 115 | |
Santos Cordon | 349e0f4 | 2015-10-09 12:50:27 -0700 | [diff] [blame] | 116 | |
Santos Cordon | 61cc930 | 2015-03-06 12:40:43 -0800 | [diff] [blame] | 117 | private static final String[] CALL_LOG_PROJECTION = new String[] { |
| 118 | CallLog.Calls._ID, |
| 119 | CallLog.Calls.DATE, |
| 120 | CallLog.Calls.DURATION, |
| 121 | CallLog.Calls.NUMBER, |
| 122 | CallLog.Calls.TYPE, |
| 123 | CallLog.Calls.COUNTRY_ISO, |
| 124 | CallLog.Calls.GEOCODED_LOCATION, |
| 125 | CallLog.Calls.NUMBER_PRESENTATION, |
| 126 | CallLog.Calls.PHONE_ACCOUNT_COMPONENT_NAME, |
| 127 | CallLog.Calls.PHONE_ACCOUNT_ID, |
| 128 | CallLog.Calls.PHONE_ACCOUNT_ADDRESS, |
| 129 | CallLog.Calls.DATA_USAGE, |
| 130 | CallLog.Calls.FEATURES |
| 131 | }; |
| 132 | |
| 133 | /** ${inheritDoc} */ |
| 134 | @Override |
| 135 | public void onBackup(ParcelFileDescriptor oldStateDescriptor, BackupDataOutput data, |
| 136 | ParcelFileDescriptor newStateDescriptor) throws IOException { |
| 137 | |
Santos Cordon | 349e0f4 | 2015-10-09 12:50:27 -0700 | [diff] [blame] | 138 | if (shouldPreventBackup(this)) { |
| 139 | if (isDebug()) { |
| 140 | Log.d(TAG, "Skipping onBackup"); |
| 141 | } |
| 142 | return; |
| 143 | } |
| 144 | |
Santos Cordon | 61cc930 | 2015-03-06 12:40:43 -0800 | [diff] [blame] | 145 | // Get the list of the previous calls IDs which were backed up. |
| 146 | DataInputStream dataInput = new DataInputStream( |
| 147 | new FileInputStream(oldStateDescriptor.getFileDescriptor())); |
| 148 | final CallLogBackupState state; |
| 149 | try { |
| 150 | state = readState(dataInput); |
| 151 | } finally { |
| 152 | dataInput.close(); |
| 153 | } |
| 154 | |
| 155 | // Run the actual backup of data |
| 156 | runBackup(state, data, getAllCallLogEntries()); |
| 157 | |
| 158 | // Rewrite the backup state. |
| 159 | DataOutputStream dataOutput = new DataOutputStream(new BufferedOutputStream( |
| 160 | new FileOutputStream(newStateDescriptor.getFileDescriptor()))); |
| 161 | try { |
| 162 | writeState(dataOutput, state); |
| 163 | } finally { |
| 164 | dataOutput.close(); |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | /** ${inheritDoc} */ |
| 169 | @Override |
| 170 | public void onRestore(BackupDataInput data, int appVersionCode, ParcelFileDescriptor newState) |
| 171 | throws IOException { |
Santos Cordon | 349e0f4 | 2015-10-09 12:50:27 -0700 | [diff] [blame] | 172 | if (shouldPreventBackup(this)) { |
| 173 | if (isDebug()) { |
| 174 | Log.d(TAG, "Skipping restore"); |
| 175 | } |
| 176 | return; |
| 177 | } |
| 178 | |
Santos Cordon | 61cc930 | 2015-03-06 12:40:43 -0800 | [diff] [blame] | 179 | if (isDebug()) { |
| 180 | Log.d(TAG, "Performing Restore"); |
| 181 | } |
| 182 | |
| 183 | while (data.readNextHeader()) { |
| 184 | Call call = readCallFromData(data); |
| 185 | if (call != null) { |
| 186 | writeCallToProvider(call); |
| 187 | if (isDebug()) { |
| 188 | Log.d(TAG, "Restored call: " + call); |
| 189 | } |
| 190 | } |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | @VisibleForTesting |
| 195 | void runBackup(CallLogBackupState state, BackupDataOutput data, Iterable<Call> calls) { |
| 196 | SortedSet<Integer> callsToRemove = new TreeSet<>(state.callIds); |
| 197 | |
| 198 | // Loop through all the call log entries to identify: |
| 199 | // (1) new calls |
| 200 | // (2) calls which have been deleted. |
| 201 | for (Call call : calls) { |
| 202 | if (!state.callIds.contains(call.id)) { |
| 203 | |
| 204 | if (isDebug()) { |
| 205 | Log.d(TAG, "Adding call to backup: " + call); |
| 206 | } |
| 207 | |
| 208 | // This call new (not in our list from the last backup), lets back it up. |
| 209 | addCallToBackup(data, call); |
| 210 | state.callIds.add(call.id); |
| 211 | } else { |
| 212 | // This call still exists in the current call log so delete it from the |
| 213 | // "callsToRemove" set since we want to keep it. |
| 214 | callsToRemove.remove(call.id); |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | // Remove calls which no longer exist in the set. |
| 219 | for (Integer i : callsToRemove) { |
| 220 | if (isDebug()) { |
| 221 | Log.d(TAG, "Removing call from backup: " + i); |
| 222 | } |
| 223 | |
| 224 | removeCallFromBackup(data, i); |
| 225 | state.callIds.remove(i); |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | private Iterable<Call> getAllCallLogEntries() { |
| 230 | List<Call> calls = new LinkedList<>(); |
| 231 | |
| 232 | // We use the API here instead of querying ContactsDatabaseHelper directly because |
| 233 | // CallLogProvider has special locks in place for sychronizing when to read. Using the APIs |
| 234 | // gives us that for free. |
| 235 | ContentResolver resolver = getContentResolver(); |
| 236 | Cursor cursor = resolver.query( |
| 237 | CallLog.Calls.CONTENT_URI, CALL_LOG_PROJECTION, null, null, null); |
| 238 | if (cursor != null) { |
| 239 | try { |
| 240 | while (cursor.moveToNext()) { |
| 241 | Call call = readCallFromCursor(cursor); |
| 242 | if (call != null) { |
| 243 | calls.add(call); |
| 244 | } |
| 245 | } |
| 246 | } finally { |
| 247 | cursor.close(); |
| 248 | } |
| 249 | } |
| 250 | |
| 251 | return calls; |
| 252 | } |
| 253 | |
| 254 | private void writeCallToProvider(Call call) { |
| 255 | Long dataUsage = call.dataUsage == 0 ? null : call.dataUsage; |
| 256 | |
Santos Cordon | 755cc64 | 2015-07-06 12:37:09 -0700 | [diff] [blame] | 257 | PhoneAccountHandle handle = null; |
| 258 | if (call.accountComponentName != null && call.accountId != null) { |
| 259 | handle = new PhoneAccountHandle( |
| 260 | ComponentName.unflattenFromString(call.accountComponentName), call.accountId); |
| 261 | } |
Santos Cordon | 61cc930 | 2015-03-06 12:40:43 -0800 | [diff] [blame] | 262 | Calls.addCall(null /* CallerInfo */, this, call.number, call.numberPresentation, call.type, |
| 263 | call.features, handle, call.date, (int) call.duration, |
Roshan Pius | a172ae8 | 2015-08-04 13:27:39 -0700 | [diff] [blame] | 264 | dataUsage, true /* addForAllUsers */, true /* is_read */); |
Santos Cordon | 61cc930 | 2015-03-06 12:40:43 -0800 | [diff] [blame] | 265 | } |
| 266 | |
| 267 | @VisibleForTesting |
| 268 | CallLogBackupState readState(DataInput dataInput) throws IOException { |
| 269 | CallLogBackupState state = new CallLogBackupState(); |
| 270 | state.callIds = new TreeSet<>(); |
| 271 | |
| 272 | try { |
| 273 | // Read the version. |
| 274 | state.version = dataInput.readInt(); |
| 275 | |
| 276 | if (state.version >= 1) { |
| 277 | // Read the size. |
| 278 | int size = dataInput.readInt(); |
| 279 | |
| 280 | // Read all of the call IDs. |
| 281 | for (int i = 0; i < size; i++) { |
| 282 | state.callIds.add(dataInput.readInt()); |
| 283 | } |
| 284 | } |
| 285 | } catch (EOFException e) { |
| 286 | state.version = VERSION_NO_PREVIOUS_STATE; |
| 287 | } |
| 288 | |
| 289 | return state; |
| 290 | } |
| 291 | |
| 292 | @VisibleForTesting |
| 293 | void writeState(DataOutput dataOutput, CallLogBackupState state) |
| 294 | throws IOException { |
| 295 | // Write version first of all |
| 296 | dataOutput.writeInt(VERSION); |
| 297 | |
| 298 | // [Version 1] |
| 299 | // size + callIds |
| 300 | dataOutput.writeInt(state.callIds.size()); |
| 301 | for (Integer i : state.callIds) { |
| 302 | dataOutput.writeInt(i); |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | @VisibleForTesting |
| 307 | Call readCallFromData(BackupDataInput data) { |
| 308 | final int callId; |
| 309 | try { |
| 310 | callId = Integer.parseInt(data.getKey()); |
| 311 | } catch (NumberFormatException e) { |
| 312 | Log.e(TAG, "Unexpected key found in restore: " + data.getKey()); |
| 313 | return null; |
| 314 | } |
| 315 | |
| 316 | try { |
| 317 | byte [] byteArray = new byte[data.getDataSize()]; |
| 318 | data.readEntityData(byteArray, 0, byteArray.length); |
| 319 | DataInputStream dataInput = new DataInputStream(new ByteArrayInputStream(byteArray)); |
| 320 | |
| 321 | Call call = new Call(); |
| 322 | call.id = callId; |
| 323 | |
| 324 | int version = dataInput.readInt(); |
| 325 | if (version >= 1) { |
| 326 | call.date = dataInput.readLong(); |
| 327 | call.duration = dataInput.readLong(); |
| 328 | call.number = readString(dataInput); |
| 329 | call.type = dataInput.readInt(); |
| 330 | call.numberPresentation = dataInput.readInt(); |
| 331 | call.accountComponentName = readString(dataInput); |
| 332 | call.accountId = readString(dataInput); |
| 333 | call.accountAddress = readString(dataInput); |
| 334 | call.dataUsage = dataInput.readLong(); |
| 335 | call.features = dataInput.readInt(); |
| 336 | } |
| 337 | |
Santos Cordon | f128d20 | 2015-07-14 17:13:16 -0700 | [diff] [blame] | 338 | if (version >= 1002) { |
| 339 | String namespace = dataInput.readUTF(); |
| 340 | int length = dataInput.readInt(); |
| 341 | byte[] buffer = new byte[length]; |
| 342 | dataInput.read(buffer); |
| 343 | readOEMDataForCall(call, new OEMData(namespace, buffer)); |
| 344 | |
| 345 | int marker = dataInput.readInt(); |
| 346 | if (marker != END_OEM_DATA_MARKER) { |
| 347 | Log.e(TAG, "Did not find END-OEM marker for call " + call.id); |
| 348 | // The marker does not match the expected value, ignore this call completely. |
| 349 | return null; |
| 350 | } |
| 351 | } |
| 352 | |
Santos Cordon | 61cc930 | 2015-03-06 12:40:43 -0800 | [diff] [blame] | 353 | return call; |
| 354 | } catch (IOException e) { |
| 355 | Log.e(TAG, "Error reading call data for " + callId, e); |
| 356 | return null; |
| 357 | } |
| 358 | } |
| 359 | |
| 360 | private Call readCallFromCursor(Cursor cursor) { |
| 361 | Call call = new Call(); |
| 362 | call.id = cursor.getInt(cursor.getColumnIndex(CallLog.Calls._ID)); |
| 363 | call.date = cursor.getLong(cursor.getColumnIndex(CallLog.Calls.DATE)); |
| 364 | call.duration = cursor.getLong(cursor.getColumnIndex(CallLog.Calls.DURATION)); |
| 365 | call.number = cursor.getString(cursor.getColumnIndex(CallLog.Calls.NUMBER)); |
| 366 | call.type = cursor.getInt(cursor.getColumnIndex(CallLog.Calls.TYPE)); |
| 367 | call.numberPresentation = |
| 368 | cursor.getInt(cursor.getColumnIndex(CallLog.Calls.NUMBER_PRESENTATION)); |
| 369 | call.accountComponentName = |
| 370 | cursor.getString(cursor.getColumnIndex(CallLog.Calls.PHONE_ACCOUNT_COMPONENT_NAME)); |
| 371 | call.accountId = |
| 372 | cursor.getString(cursor.getColumnIndex(CallLog.Calls.PHONE_ACCOUNT_ID)); |
| 373 | call.accountAddress = |
| 374 | cursor.getString(cursor.getColumnIndex(CallLog.Calls.PHONE_ACCOUNT_ADDRESS)); |
| 375 | call.dataUsage = cursor.getLong(cursor.getColumnIndex(CallLog.Calls.DATA_USAGE)); |
| 376 | call.features = cursor.getInt(cursor.getColumnIndex(CallLog.Calls.FEATURES)); |
| 377 | return call; |
| 378 | } |
| 379 | |
| 380 | private void addCallToBackup(BackupDataOutput output, Call call) { |
| 381 | ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| 382 | DataOutputStream data = new DataOutputStream(baos); |
| 383 | |
| 384 | try { |
| 385 | data.writeInt(VERSION); |
| 386 | data.writeLong(call.date); |
| 387 | data.writeLong(call.duration); |
| 388 | writeString(data, call.number); |
| 389 | data.writeInt(call.type); |
| 390 | data.writeInt(call.numberPresentation); |
| 391 | writeString(data, call.accountComponentName); |
| 392 | writeString(data, call.accountId); |
| 393 | writeString(data, call.accountAddress); |
| 394 | data.writeLong(call.dataUsage == null ? 0 : call.dataUsage); |
| 395 | data.writeInt(call.features); |
Santos Cordon | f128d20 | 2015-07-14 17:13:16 -0700 | [diff] [blame] | 396 | |
| 397 | OEMData oemData = getOEMDataForCall(call); |
| 398 | data.writeUTF(oemData.namespace); |
| 399 | data.writeInt(oemData.bytes.length); |
| 400 | data.write(oemData.bytes); |
Roshan Pius | 5fe9573 | 2015-07-29 10:40:24 -0700 | [diff] [blame] | 401 | data.writeInt(END_OEM_DATA_MARKER); |
Santos Cordon | f128d20 | 2015-07-14 17:13:16 -0700 | [diff] [blame] | 402 | |
Santos Cordon | 61cc930 | 2015-03-06 12:40:43 -0800 | [diff] [blame] | 403 | data.flush(); |
| 404 | |
| 405 | output.writeEntityHeader(Integer.toString(call.id), baos.size()); |
| 406 | output.writeEntityData(baos.toByteArray(), baos.size()); |
| 407 | |
| 408 | if (isDebug()) { |
| 409 | Log.d(TAG, "Wrote call to backup: " + call + " with byte array: " + baos); |
| 410 | } |
| 411 | } catch (IOException e) { |
| 412 | Log.e(TAG, "Failed to backup call: " + call, e); |
| 413 | } |
| 414 | } |
| 415 | |
Santos Cordon | f128d20 | 2015-07-14 17:13:16 -0700 | [diff] [blame] | 416 | /** |
| 417 | * Allows OEMs to provide proprietary data to backup along with the rest of the call log |
| 418 | * data. Because there is no way to provide a Backup Transport implementation |
| 419 | * nor peek into the data format of backup entries without system-level permissions, it is |
| 420 | * not possible (at the time of this writing) to write CTS tests for this piece of code. |
| 421 | * It is, therefore, important that if you alter this portion of code that you |
| 422 | * test backup and restore of call log is working as expected; ideally this would be tested by |
| 423 | * backing up and restoring between two different Android phone devices running M+. |
| 424 | */ |
| 425 | private OEMData getOEMDataForCall(Call call) { |
| 426 | return new OEMData(NO_OEM_NAMESPACE, ZERO_BYTE_ARRAY); |
| 427 | |
| 428 | // OEMs that want to add their own proprietary data to call log backup should replace the |
| 429 | // code above with their own namespace and add any additional data they need. |
| 430 | // Versioning and size-prefixing the data should be done here as needed. |
| 431 | // |
| 432 | // Example: |
| 433 | |
| 434 | /* |
| 435 | ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| 436 | DataOutputStream data = new DataOutputStream(baos); |
| 437 | |
| 438 | String customData1 = "Generic OEM"; |
| 439 | int customData2 = 42; |
| 440 | |
| 441 | // Write a version for the data |
| 442 | data.writeInt(OEM_DATA_VERSION); |
| 443 | |
| 444 | // Write the data and flush |
| 445 | data.writeUTF(customData1); |
| 446 | data.writeInt(customData2); |
| 447 | data.flush(); |
| 448 | |
| 449 | String oemNamespace = "com.oem.namespace"; |
| 450 | return new OEMData(oemNamespace, baos.toByteArray()); |
| 451 | */ |
| 452 | } |
| 453 | |
| 454 | /** |
| 455 | * Allows OEMs to read their own proprietary data when doing a call log restore. It is important |
| 456 | * that the implementation verify the namespace of the data matches their expected value before |
| 457 | * attempting to read the data or else you may risk reading invalid data. |
| 458 | * |
| 459 | * See {@link #getOEMDataForCall} for information concerning proper testing of this code. |
| 460 | */ |
| 461 | private void readOEMDataForCall(Call call, OEMData oemData) { |
| 462 | // OEMs that want to read proprietary data from a call log restore should do so here. |
| 463 | // Before reading from the data, an OEM should verify that the data matches their |
| 464 | // expected namespace. |
| 465 | // |
| 466 | // Example: |
| 467 | |
| 468 | /* |
| 469 | if ("com.oem.expected.namespace".equals(oemData.namespace)) { |
| 470 | ByteArrayInputStream bais = new ByteArrayInputStream(oemData.bytes); |
| 471 | DataInputStream data = new DataInputStream(bais); |
| 472 | |
| 473 | // Check against this version as we read data. |
| 474 | int version = data.readInt(); |
| 475 | String customData1 = data.readUTF(); |
| 476 | int customData2 = data.readInt(); |
| 477 | // do something with data |
| 478 | } |
| 479 | */ |
| 480 | } |
| 481 | |
| 482 | |
Santos Cordon | 61cc930 | 2015-03-06 12:40:43 -0800 | [diff] [blame] | 483 | private void writeString(DataOutputStream data, String str) throws IOException { |
| 484 | if (str == null) { |
| 485 | data.writeBoolean(false); |
| 486 | } else { |
| 487 | data.writeBoolean(true); |
| 488 | data.writeUTF(str); |
| 489 | } |
| 490 | } |
| 491 | |
| 492 | private String readString(DataInputStream data) throws IOException { |
| 493 | if (data.readBoolean()) { |
| 494 | return data.readUTF(); |
| 495 | } else { |
| 496 | return null; |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | private void removeCallFromBackup(BackupDataOutput output, int callId) { |
| 501 | try { |
| 502 | output.writeEntityHeader(Integer.toString(callId), -1); |
| 503 | } catch (IOException e) { |
| 504 | Log.e(TAG, "Failed to remove call: " + callId, e); |
| 505 | } |
| 506 | } |
| 507 | |
Santos Cordon | 349e0f4 | 2015-10-09 12:50:27 -0700 | [diff] [blame] | 508 | static boolean shouldPreventBackup(Context context) { |
| 509 | // Check to see that the user is full-data aware before performing calllog backup. |
| 510 | return Settings.Secure.getInt( |
| 511 | context.getContentResolver(), USER_FULL_DATA_BACKUP_AWARE, 0) == 0; |
| 512 | } |
| 513 | |
Santos Cordon | 61cc930 | 2015-03-06 12:40:43 -0800 | [diff] [blame] | 514 | private static boolean isDebug() { |
| 515 | return Log.isLoggable(TAG, Log.DEBUG); |
| 516 | } |
| 517 | } |