src/com/owncloud/android/operations/SynchronizeFolderOperation.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2012-2014 ownCloud Inc.
   3  *
   4  *   This program is free software: you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License version 2,
   6  *   as published by the Free Software Foundation.
   7  *
   8  *   This program is distributed in the hope that it will be useful,
   9  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  *   GNU General Public License for more details.
  12  *
  13  *   You should have received a copy of the GNU General Public License
  14  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15  *
  16  */
  17
  18 package com.owncloud.android.operations;
  19
  20 import java.io.File;
  21 import java.io.FileInputStream;
  22 import java.io.FileOutputStream;
  23 import java.io.IOException;
  24 import java.io.InputStream;
  25 import java.io.OutputStream;
  26 import java.util.ArrayList;
  27 import java.util.HashMap;
  28 import java.util.List;
  29 import java.util.Map;
  30 import java.util.Vector;
  31
  32 import org.apache.http.HttpStatus;
  33 import android.accounts.Account;
  34 import android.content.Context;
  35 import android.content.Intent;
  36 import android.util.Log;
  37 //import android.support.v4.content.LocalBroadcastManager;
  38
  39 import com.owncloud.android.datamodel.FileDataStorageManager;
  40 import com.owncloud.android.datamodel.OCFile;
  41
  42 import com.owncloud.android.lib.common.OwnCloudClient;
  43 import com.owncloud.android.lib.resources.shares.OCShare;
  44 import com.owncloud.android.lib.common.operations.RemoteOperation;
  45 import com.owncloud.android.lib.common.operations.RemoteOperationResult;
  46 import com.owncloud.android.lib.common.operations.RemoteOperationResult.ResultCode;
  47 import com.owncloud.android.lib.common.utils.Log_OC;
  48 import com.owncloud.android.lib.resources.shares.GetRemoteSharesForFileOperation;
  49 import com.owncloud.android.lib.resources.files.FileUtils;
  50 import com.owncloud.android.lib.resources.files.ReadRemoteFileOperation;
  51 import com.owncloud.android.lib.resources.files.ReadRemoteFolderOperation;
  52 import com.owncloud.android.lib.resources.files.RemoteFile;
  53
  54 import com.owncloud.android.syncadapter.FileSyncAdapter;
  55 import com.owncloud.android.utils.FileStorageUtils;
  56
  57
  58
  59 /**
  60  *  Remote operation performing the synchronization of the list of files contained
  61  *  in a folder identified with its remote path.
  62  *
  63  *  Fetches the list and properties of the files contained in the given folder, including their
  64  *  properties, and updates the local database with them.
  65  *
  66  *  Does NOT enter in the child folders to synchronize their contents also.
  67  *
  68  *  @author David A. Velasco
  69  */
  70 public class SynchronizeFolderOperation extends RemoteOperation {
  71
  72     private static final String TAG = SynchronizeFolderOperation.class.getSimpleName();
  73
  74     public static final String EVENT_SINGLE_FOLDER_CONTENTS_SYNCED  =
  75             SynchronizeFolderOperation.class.getName() + ".EVENT_SINGLE_FOLDER_CONTENTS_SYNCED";
  76     public static final String EVENT_SINGLE_FOLDER_SHARES_SYNCED    =
  77             SynchronizeFolderOperation.class.getName() + ".EVENT_SINGLE_FOLDER_SHARES_SYNCED";
  78
  79     /** Time stamp for the synchronization process in progress */
  80     private long mCurrentSyncTime;
  81
  82     /** Remote folder to synchronize */
  83     private OCFile mLocalFolder;
  84
  85     /** Access to the local database */
  86     private FileDataStorageManager mStorageManager;
  87
  88     /** Account where the file to synchronize belongs */
  89     private Account mAccount;
  90
  91     /** Android context; necessary to send requests to the download service */
  92     private Context mContext;
  93
  94     /** Files and folders contained in the synchronized folder after a successful operation */
  95     private List<OCFile> mChildren;
  96
  97     /** Counter of conflicts found between local and remote files */
  98     private int mConflictsFound;
  99
 100     /** Counter of failed operations in synchronization of kept-in-sync files */
 101     private int mFailsInFavouritesFound;
 102
 103     /**
 104      * Map of remote and local paths to files that where locally stored in a location
 105      * out of the ownCloud folder and couldn't be copied automatically into it
 106      **/
 107     private Map<String, String> mForgottenLocalFiles;
 108
 109     /** 'True' means that this operation is part of a full account synchronization */
 110     private boolean mSyncFullAccount;
 111
 112     /** 'True' means that Share resources bound to the files into should be refreshed also */
 113     private boolean mIsShareSupported;
 114
 115     /** 'True' means that the remote folder changed and should be fetched */
 116     private boolean mRemoteFolderChanged;
 117
 118     /** 'True' means that Etag will be ignored */
 119     private boolean mIgnoreETag;
 120
 121
 122     /**
 123      * Creates a new instance of {@link SynchronizeFolderOperation}.
 124      *
 125      * @param   folder                  Folder to synchronize.
 126      * @param   currentSyncTime         Time stamp for the synchronization process in progress.
 127      * @param   syncFullAccount         'True' means that this operation is part of a full account
 128      *                                  synchronization.
 129      * @param   isShareSupported        'True' means that the server supports the sharing API.
 130      * @param   ignoreEtag              'True' means that the content of the remote folder should
 131      *                                  be fetched and updated even though the 'eTag' did not
 132      *                                  change.
 133      * @param   dataStorageManager      Interface with the local database.
 134      * @param   account                 ownCloud account where the folder is located.
 135      * @param   context                 Application context.
 136      */
 137     public SynchronizeFolderOperation(  OCFile folder,
 138                                         long currentSyncTime,
 139                                         boolean syncFullAccount,
 140                                         boolean isShareSupported,
 141                                         boolean ignoreETag,
 142                                         FileDataStorageManager dataStorageManager,
 143                                         Account account,
 144                                         Context context ) {
 145         mLocalFolder = folder;
 146         mCurrentSyncTime = currentSyncTime;
 147         mSyncFullAccount = syncFullAccount;
 148         mIsShareSupported = isShareSupported;
 149         mStorageManager = dataStorageManager;
 150         mAccount = account;
 151         mContext = context;
 152         mForgottenLocalFiles = new HashMap<String, String>();
 153         mRemoteFolderChanged = false;
 154         mIgnoreETag = ignoreETag;
 155     }
 156
 157
 158     public int getConflictsFound() {
 159         return mConflictsFound;
 160     }
 161
 162     public int getFailsInFavouritesFound() {
 163         return mFailsInFavouritesFound;
 164     }
 165
 166     public Map<String, String> getForgottenLocalFiles() {
 167         return mForgottenLocalFiles;
 168     }
 169
 170     /**
 171      * Returns the list of files and folders contained in the synchronized folder,
 172      * if called after synchronization is complete.
 173      *
 174      * @return  List of files and folders contained in the synchronized folder.
 175      */
 176     public List<OCFile> getChildren() {
 177         return mChildren;
 178     }
 179
 180     /**
 181      * Performs the synchronization.
 182      *
 183      * {@inheritDoc}
 184      */
 185     @Override
 186     protected RemoteOperationResult run(OwnCloudClient client) {
 187         RemoteOperationResult result = null;
 188         mFailsInFavouritesFound = 0;
 189         mConflictsFound = 0;
 190         mForgottenLocalFiles.clear();
 191
 192         if (FileUtils.PATH_SEPARATOR.equals(mLocalFolder.getRemotePath()) && !mSyncFullAccount) {
 193             updateOCVersion(client);
 194         }
 195
 196         result = checkForChanges(client);
 197
 198         if (result.isSuccess()) {
 199             if (mRemoteFolderChanged) {
 200                 result = fetchAndSyncRemoteFolder(client);
 201             } else {
 202                 mChildren = mStorageManager.getFolderContent(mLocalFolder);
 203             }
 204         }
 205
 206         if (!mSyncFullAccount) {
 207             sendLocalBroadcast(
 208                     EVENT_SINGLE_FOLDER_CONTENTS_SYNCED, mLocalFolder.getRemotePath(), result
 209             );
 210         }
 211
 212         if (result.isSuccess() && mIsShareSupported && !mSyncFullAccount) {
 213             refreshSharesForFolder(client); // share result is ignored
 214         }
 215
 216         if (!mSyncFullAccount) {
 217             sendLocalBroadcast(
 218                     EVENT_SINGLE_FOLDER_SHARES_SYNCED, mLocalFolder.getRemotePath(), result
 219             );
 220         }
 221
 222         return result;
 223
 224     }
 225
 226
 227     private void updateOCVersion(OwnCloudClient client) {
 228         UpdateOCVersionOperation update = new UpdateOCVersionOperation(mAccount, mContext);
 229         RemoteOperationResult result = update.execute(client);
 230         if (result.isSuccess()) {
 231             mIsShareSupported = update.getOCVersion().isSharedSupported();
 232         }
 233     }
 234
 235
 236     private RemoteOperationResult checkForChanges(OwnCloudClient client) {
 237         mRemoteFolderChanged = true;
 238         RemoteOperationResult result = null;
 239         String remotePath = null;
 240
 241         remotePath = mLocalFolder.getRemotePath();
 242         Log_OC.d(TAG, "Checking changes in " + mAccount.name + remotePath);
 243
 244         // remote request
 245         ReadRemoteFileOperation operation = new ReadRemoteFileOperation(remotePath);
 246         result = operation.execute(client);
 247         if (result.isSuccess()){
 248             OCFile remoteFolder = FileStorageUtils.fillOCFile((RemoteFile) result.getData().get(0));
 249
 250             if (!mIgnoreETag) {
 251                 // check if remote and local folder are different
 252                 mRemoteFolderChanged =
 253                         !(remoteFolder.getEtag().equalsIgnoreCase(mLocalFolder.getEtag()));
 254             }
 255
 256             result = new RemoteOperationResult(ResultCode.OK);
 257
 258             Log_OC.i(TAG, "Checked " + mAccount.name + remotePath + " : " +
 259                     (mRemoteFolderChanged ? "changed" : "not changed"));
 260
 261         } else {
 262             // check failed
 263             if (result.getCode() == ResultCode.FILE_NOT_FOUND) {
 264                 removeLocalFolder();
 265             }
 266             if (result.isException()) {
 267                 Log_OC.e(TAG, "Checked " + mAccount.name + remotePath  + " : " +
 268                         result.getLogMessage(), result.getException());
 269             } else {
 270                 Log_OC.e(TAG, "Checked " + mAccount.name + remotePath + " : " +
 271                         result.getLogMessage());
 272             }
 273         }
 274
 275         return result;
 276     }
 277
 278
 279     private RemoteOperationResult fetchAndSyncRemoteFolder(OwnCloudClient client) {
 280         String remotePath = mLocalFolder.getRemotePath();
 281         ReadRemoteFolderOperation operation = new ReadRemoteFolderOperation(remotePath);
 282         RemoteOperationResult result = operation.execute(client);
 283         Log_OC.d(TAG, "Synchronizing " + mAccount.name + remotePath);
 284
 285         if (result.isSuccess()) {
 286             synchronizeData(result.getData(), client);
 287             if (mConflictsFound > 0  || mFailsInFavouritesFound > 0) {
 288                 result = new RemoteOperationResult(ResultCode.SYNC_CONFLICT);
 289                     // should be a different result code, but will do the job
 290             }
 291         } else {
 292             if (result.getCode() == ResultCode.FILE_NOT_FOUND)
 293                 removeLocalFolder();
 294         }
 295
 296         return result;
 297     }
 298
 299
 300     private void removeLocalFolder() {
 301         if (mStorageManager.fileExists(mLocalFolder.getFileId())) {
 302             String currentSavePath = FileStorageUtils.getSavePath(mAccount.name);
 303             mStorageManager.removeFolder(
 304                     mLocalFolder,
 305                     true,
 306                     (   mLocalFolder.isDown() &&
 307                             mLocalFolder.getStoragePath().startsWith(currentSavePath)
 308                     )
 309             );
 310         }
 311     }
 312
 313
 314     /**
 315      *  Synchronizes the data retrieved from the server about the contents of the target folder
 316      *  with the current data in the local database.
 317      *
 318      *  Grants that mChildren is updated with fresh data after execution.
 319      *
 320      *  @param folderAndFiles   Remote folder and children files in Folder
 321      *
 322      *  @param client           Client instance to the remote server where the data were
 323      *                          retrieved.
 324      *  @return                 'True' when any change was made in the local data, 'false' otherwise
 325      */
 326     private void synchronizeData(ArrayList<Object> folderAndFiles, OwnCloudClient client) {
 327         // get 'fresh data' from the database
 328         mLocalFolder = mStorageManager.getFileByPath(mLocalFolder.getRemotePath());
 329
 330         // parse data from remote folder
 331         OCFile remoteFolder = fillOCFile((RemoteFile)folderAndFiles.get(0));
 332         remoteFolder.setParentId(mLocalFolder.getParentId());
 333         remoteFolder.setFileId(mLocalFolder.getFileId());
 334
 335         Log_OC.d(TAG, "Remote folder " + mLocalFolder.getRemotePath()
 336                 + " changed - starting update of local data ");
 337
 338         List<OCFile> updatedFiles = new Vector<OCFile>(folderAndFiles.size() - 1);
 339         List<SynchronizeFileOperation> filesToSyncContents = new Vector<SynchronizeFileOperation>();
 340
 341         // get current data about local contents of the folder to synchronize
 342         List<OCFile> localFiles = mStorageManager.getFolderContent(mLocalFolder);
 343         Map<String, OCFile> localFilesMap = new HashMap<String, OCFile>(localFiles.size());
 344         for (OCFile file : localFiles) {
 345             localFilesMap.put(file.getRemotePath(), file);
 346         }
 347
 348         // loop to update every child
 349         OCFile remoteFile = null, localFile = null;
 350         for (int i=1; i<folderAndFiles.size(); i++) {
 351             /// new OCFile instance with the data from the server
 352             remoteFile = fillOCFile((RemoteFile)folderAndFiles.get(i));
 353             remoteFile.setParentId(mLocalFolder.getFileId());
 354
 355             /// retrieve local data for the read file
 356             //  localFile = mStorageManager.getFileByPath(remoteFile.getRemotePath());
 357             localFile = localFilesMap.remove(remoteFile.getRemotePath());
 358
 359             /// add to the remoteFile (the new one) data about LOCAL STATE (not existing in server)
 360             remoteFile.setLastSyncDateForProperties(mCurrentSyncTime);
 361             if (localFile != null) {
 362                 // some properties of local state are kept unmodified
 363                 remoteFile.setFileId(localFile.getFileId());
 364                 remoteFile.setKeepInSync(localFile.keepInSync());
 365                 remoteFile.setLastSyncDateForData(localFile.getLastSyncDateForData());
 366                 remoteFile.setModificationTimestampAtLastSyncForData(
 367                         localFile.getModificationTimestampAtLastSyncForData()
 368                 );
 369                 remoteFile.setStoragePath(localFile.getStoragePath());
 370                 // eTag will not be updated unless contents are synchronized
 371                 //  (Synchronize[File|Folder]Operation with remoteFile as parameter)
 372                 remoteFile.setEtag(localFile.getEtag());
 373                 if (remoteFile.isFolder()) {
 374                     remoteFile.setFileLength(localFile.getFileLength());
 375                         // TODO move operations about size of folders to FileContentProvider
 376                 } else if (mRemoteFolderChanged && remoteFile.isImage() &&
 377                         remoteFile.getModificationTimestamp() != localFile.getModificationTimestamp()) {
 378                     remoteFile.setNeedsUpdateThumbnail(true);
 379                     Log.d(TAG, "Image " + remoteFile.getFileName() + " updated on the server");
 380                 }
 381                 remoteFile.setPublicLink(localFile.getPublicLink());
 382                 remoteFile.setShareByLink(localFile.isShareByLink());
 383             } else {
 384                 // remote eTag will not be updated unless contents are synchronized
 385                 //  (Synchronize[File|Folder]Operation with remoteFile as parameter)
 386                 remoteFile.setEtag("");
 387             }
 388
 389             /// check and fix, if needed, local storage path
 390             checkAndFixForeignStoragePath(remoteFile);      // policy - local files are COPIED
 391                                                             // into the ownCloud local folder;
 392             searchForLocalFileInDefaultPath(remoteFile);    // legacy
 393
 394             /// prepare content synchronization for kept-in-sync files
 395             if (remoteFile.keepInSync()) {
 396                 SynchronizeFileOperation operation = new SynchronizeFileOperation(  localFile,
 397                                                                                     remoteFile,
 398                                                                                     mAccount,
 399                                                                                     true,
 400                                                                                     mContext
 401                                                                                     );
 402
 403                 filesToSyncContents.add(operation);
 404             }
 405
 406             updatedFiles.add(remoteFile);
 407         }
 408
 409         // save updated contents in local database
 410         mStorageManager.saveFolder(remoteFolder, updatedFiles, localFilesMap.values());
 411
 412         // request for the synchronization of file contents AFTER saving current remote properties
 413         startContentSynchronizations(filesToSyncContents, client);
 414
 415         mChildren = updatedFiles;
 416     }
 417
 418     /**
 419      * Performs a list of synchronization operations, determining if a download or upload is needed
 420      * or if exists conflict due to changes both in local and remote contents of the each file.
 421      *
 422      * If download or upload is needed, request the operation to the corresponding service and goes
 423      * on.
 424      *
 425      * @param filesToSyncContents       Synchronization operations to execute.
 426      * @param client                    Interface to the remote ownCloud server.
 427      */
 428     private void startContentSynchronizations(
 429             List<SynchronizeFileOperation> filesToSyncContents, OwnCloudClient client
 430         ) {
 431         RemoteOperationResult contentsResult = null;
 432         for (SynchronizeFileOperation op: filesToSyncContents) {
 433             contentsResult = op.execute(mStorageManager, mContext);   // async
 434             if (!contentsResult.isSuccess()) {
 435                 if (contentsResult.getCode() == ResultCode.SYNC_CONFLICT) {
 436                     mConflictsFound++;
 437                 } else {
 438                     mFailsInFavouritesFound++;
 439                     if (contentsResult.getException() != null) {
 440                         Log_OC.e(TAG, "Error while synchronizing favourites : "
 441                                 +  contentsResult.getLogMessage(), contentsResult.getException());
 442                     } else {
 443                         Log_OC.e(TAG, "Error while synchronizing favourites : "
 444                                 + contentsResult.getLogMessage());
 445                     }
 446                 }
 447             }   // won't let these fails break the synchronization process
 448         }
 449     }
 450
 451
 452     public boolean isMultiStatus(int status) {
 453         return (status == HttpStatus.SC_MULTI_STATUS);
 454     }
 455
 456     /**
 457      * Creates and populates a new {@link OCFile} object with the data read from the server.
 458      *
 459      * @param remote    remote file read from the server (remote file or folder).
 460      * @return          New OCFile instance representing the remote resource described by we.
 461      */
 462     private OCFile fillOCFile(RemoteFile remote) {
 463         OCFile file = new OCFile(remote.getRemotePath());
 464         file.setCreationTimestamp(remote.getCreationTimestamp());
 465         file.setFileLength(remote.getLength());
 466         file.setMimetype(remote.getMimeType());
 467         file.setModificationTimestamp(remote.getModifiedTimestamp());
 468         file.setEtag(remote.getEtag());
 469         file.setPermissions(remote.getPermissions());
 470         file.setRemoteId(remote.getRemoteId());
 471         return file;
 472     }
 473
 474
 475     /**
 476      * Checks the storage path of the OCFile received as parameter.
 477      * If it's out of the local ownCloud folder, tries to copy the file inside it.
 478      *
 479      * If the copy fails, the link to the local file is nullified. The account of forgotten
 480      * files is kept in {@link #mForgottenLocalFiles}
 481      *)
 482      * @param file      File to check and fix.
 483      */
 484     private void checkAndFixForeignStoragePath(OCFile file) {
 485         String storagePath = file.getStoragePath();
 486         String expectedPath = FileStorageUtils.getDefaultSavePathFor(mAccount.name, file);
 487         if (storagePath != null && !storagePath.equals(expectedPath)) {
 488             /// fix storagePaths out of the local ownCloud folder
 489             File originalFile = new File(storagePath);
 490             if (FileStorageUtils.getUsableSpace(mAccount.name) < originalFile.length()) {
 491                 mForgottenLocalFiles.put(file.getRemotePath(), storagePath);
 492                 file.setStoragePath(null);
 493
 494             } else {
 495                 InputStream in = null;
 496                 OutputStream out = null;
 497                 try {
 498                     File expectedFile = new File(expectedPath);
 499                     File expectedParent = expectedFile.getParentFile();
 500                     expectedParent.mkdirs();
 501                     if (!expectedParent.isDirectory()) {
 502                         throw new IOException(
 503                                 "Unexpected error: parent directory could not be created"
 504                         );
 505                     }
 506                     expectedFile.createNewFile();
 507                     if (!expectedFile.isFile()) {
 508                         throw new IOException("Unexpected error: target file could not be created");
 509                     }
 510                     in = new FileInputStream(originalFile);
 511                     out = new FileOutputStream(expectedFile);
 512                     byte[] buf = new byte[1024];
 513                     int len;
 514                     while ((len = in.read(buf)) > 0){
 515                         out.write(buf, 0, len);
 516                     }
 517                     file.setStoragePath(expectedPath);
 518
 519                 } catch (Exception e) {
 520                     Log_OC.e(TAG, "Exception while copying foreign file " + expectedPath, e);
 521                     mForgottenLocalFiles.put(file.getRemotePath(), storagePath);
 522                     file.setStoragePath(null);
 523
 524                 } finally {
 525                     try {
 526                         if (in != null) in.close();
 527                     } catch (Exception e) {
 528                         Log_OC.d(TAG, "Weird exception while closing input stream for "
 529                                 + storagePath + " (ignoring)", e);
 530                     }
 531                     try {
 532                         if (out != null) out.close();
 533                     } catch (Exception e) {
 534                         Log_OC.d(TAG, "Weird exception while closing output stream for "
 535                                 + expectedPath + " (ignoring)", e);
 536                     }
 537                 }
 538             }
 539         }
 540     }
 541
 542
 543     private RemoteOperationResult refreshSharesForFolder(OwnCloudClient client) {
 544         RemoteOperationResult result = null;
 545
 546         // remote request
 547         GetRemoteSharesForFileOperation operation =
 548                 new GetRemoteSharesForFileOperation(mLocalFolder.getRemotePath(), false, true);
 549         result = operation.execute(client);
 550
 551         if (result.isSuccess()) {
 552             // update local database
 553             ArrayList<OCShare> shares = new ArrayList<OCShare>();
 554             for(Object obj: result.getData()) {
 555                 shares.add((OCShare) obj);
 556             }
 557             mStorageManager.saveSharesInFolder(shares, mLocalFolder);
 558         }
 559
 560         return result;
 561     }
 562
 563
 564     /**
 565      * Scans the default location for saving local copies of files searching for
 566      * a 'lost' file with the same full name as the {@link OCFile} received as
 567      * parameter.
 568      *
 569      * @param file      File to associate a possible 'lost' local file.
 570      */
 571     private void searchForLocalFileInDefaultPath(OCFile file) {
 572         if (file.getStoragePath() == null && !file.isFolder()) {
 573             File f = new File(FileStorageUtils.getDefaultSavePathFor(mAccount.name, file));
 574             if (f.exists()) {
 575                 file.setStoragePath(f.getAbsolutePath());
 576                 file.setLastSyncDateForData(f.lastModified());
 577             }
 578         }
 579     }
 580
 581
 582     /**
 583      * Sends a message to any application component interested in the progress
 584      * of the synchronization.
 585      *
 586      * @param event
 587      * @param dirRemotePath     Remote path of a folder that was just synchronized
 588      *                          (with or without success)
 589      * @param result
 590      */
 591     private void sendLocalBroadcast(
 592             String event, String dirRemotePath, RemoteOperationResult result
 593         ) {
 594         Log_OC.d(TAG, "Send broadcast " + event);
 595         Intent intent = new Intent(event);
 596         intent.putExtra(FileSyncAdapter.EXTRA_ACCOUNT_NAME, mAccount.name);
 597         if (dirRemotePath != null) {
 598             intent.putExtra(FileSyncAdapter.EXTRA_FOLDER_PATH, dirRemotePath);
 599         }
 600         intent.putExtra(FileSyncAdapter.EXTRA_RESULT, result);
 601         mContext.sendStickyBroadcast(intent);
 602         //LocalBroadcastManager.getInstance(mContext).sendBroadcast(intent);
 603     }
 604
 605
 606     public boolean getRemoteFolderChanged() {
 607         return mRemoteFolderChanged;
 608     }
 609
 610 }