mirror of https://github.com/nextcloud/android
618 lines
24 KiB
Java
618 lines
24 KiB
Java
/*
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* ownCloud Android client application
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*
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* @author David A. Velasco
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* Copyright (C) 2015 ownCloud Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.owncloud.android.operations;
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import android.accounts.Account;
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import android.content.Context;
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import android.content.Intent;
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import android.util.Log;
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import com.owncloud.android.datamodel.DecryptedFolderMetadata;
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import com.owncloud.android.datamodel.FileDataStorageManager;
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import com.owncloud.android.datamodel.OCFile;
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import com.owncloud.android.lib.common.OwnCloudClient;
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import com.owncloud.android.lib.common.operations.RemoteOperation;
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import com.owncloud.android.lib.common.operations.RemoteOperationResult;
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import com.owncloud.android.lib.common.operations.RemoteOperationResult.ResultCode;
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import com.owncloud.android.lib.common.utils.Log_OC;
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import com.owncloud.android.lib.resources.files.ReadFileRemoteOperation;
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import com.owncloud.android.lib.resources.files.ReadFolderRemoteOperation;
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import com.owncloud.android.lib.resources.files.model.RemoteFile;
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import com.owncloud.android.lib.resources.shares.GetRemoteSharesForFileOperation;
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import com.owncloud.android.lib.resources.shares.OCShare;
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import com.owncloud.android.lib.resources.shares.ShareType;
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import com.owncloud.android.syncadapter.FileSyncAdapter;
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import com.owncloud.android.utils.DataHolderUtil;
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import com.owncloud.android.utils.EncryptionUtils;
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import com.owncloud.android.utils.FileStorageUtils;
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import com.owncloud.android.utils.MimeTypeUtil;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Vector;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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/**
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* Remote operation performing the synchronization of the list of files contained
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* in a folder identified with its remote path.
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*
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* Fetches the list and properties of the files contained in the given folder, including their
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* properties, and updates the local database with them.
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*
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* Does NOT enter in the child folders to synchronize their contents also.
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*/
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@SuppressWarnings("PMD.AvoidDuplicateLiterals")
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public class RefreshFolderOperation extends RemoteOperation {
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private static final String TAG = RefreshFolderOperation.class.getSimpleName();
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public static final String EVENT_SINGLE_FOLDER_CONTENTS_SYNCED =
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RefreshFolderOperation.class.getName() + ".EVENT_SINGLE_FOLDER_CONTENTS_SYNCED";
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public static final String EVENT_SINGLE_FOLDER_SHARES_SYNCED =
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RefreshFolderOperation.class.getName() + ".EVENT_SINGLE_FOLDER_SHARES_SYNCED";
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/** Time stamp for the synchronization process in progress */
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private long mCurrentSyncTime;
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/** Remote folder to synchronize */
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private OCFile mLocalFolder;
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/** Access to the local database */
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private FileDataStorageManager mStorageManager;
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/** Account where the file to synchronize belongs */
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private Account mAccount;
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/** Android context; necessary to send requests to the download service */
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private Context mContext;
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/** Files and folders contained in the synchronized folder after a successful operation */
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private List<OCFile> mChildren;
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/** Counter of conflicts found between local and remote files */
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private int mConflictsFound;
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/** Counter of failed operations in synchronization of kept-in-sync files */
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private int mFailsInKeptInSyncFound;
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/**
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* Map of remote and local paths to files that where locally stored in a location
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* out of the ownCloud folder and couldn't be copied automatically into it
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**/
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private Map<String, String> mForgottenLocalFiles;
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/**
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* 'True' means that this operation is part of a full account synchronization
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*/
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private boolean mSyncFullAccount;
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/** 'True' means that the remote folder changed and should be fetched */
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private boolean mRemoteFolderChanged;
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/** 'True' means that Etag will be ignored */
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private boolean mIgnoreETag;
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/**
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* 'True' means that no share and no capabilities will be updated
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*/
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private boolean mOnlyFileMetadata;
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private List<SynchronizeFileOperation> mFilesToSyncContents;
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// this will be used for every file when 'folder synchronization' replaces 'folder download'
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/**
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* Creates a new instance of {@link RefreshFolderOperation}.
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*
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* @param folder Folder to synchronize.
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* @param currentSyncTime Time stamp for the synchronization process in progress.
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* @param syncFullAccount 'True' means that this operation is part of a full account
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* synchronization.
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* @param ignoreETag 'True' means that the content of the remote folder should
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* be fetched and updated even though the 'eTag' did not
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* change.
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* @param dataStorageManager Interface with the local database.
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* @param account ownCloud account where the folder is located.
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* @param context Application context.
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*/
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public RefreshFolderOperation(OCFile folder,
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long currentSyncTime,
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boolean syncFullAccount,
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boolean ignoreETag,
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FileDataStorageManager dataStorageManager,
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Account account,
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Context context) {
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mLocalFolder = folder;
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mCurrentSyncTime = currentSyncTime;
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mSyncFullAccount = syncFullAccount;
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mStorageManager = dataStorageManager;
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mAccount = account;
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mContext = context;
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mForgottenLocalFiles = new HashMap<>();
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mRemoteFolderChanged = false;
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mIgnoreETag = ignoreETag;
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mOnlyFileMetadata = false;
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mFilesToSyncContents = new Vector<>();
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}
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public RefreshFolderOperation(OCFile folder,
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long currentSyncTime,
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boolean syncFullAccount,
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boolean ignoreETag,
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boolean onlyFileMetadata,
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FileDataStorageManager dataStorageManager,
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Account account,
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Context context) {
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mLocalFolder = folder;
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mCurrentSyncTime = currentSyncTime;
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mSyncFullAccount = syncFullAccount;
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mStorageManager = dataStorageManager;
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mAccount = account;
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mContext = context;
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mForgottenLocalFiles = new HashMap<>();
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mRemoteFolderChanged = false;
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mIgnoreETag = ignoreETag;
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mOnlyFileMetadata = onlyFileMetadata;
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mFilesToSyncContents = new Vector<>();
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}
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public int getConflictsFound() {
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return mConflictsFound;
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}
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public int getFailsInKeptInSyncFound() {
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return mFailsInKeptInSyncFound;
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}
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public Map<String, String> getForgottenLocalFiles() {
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return mForgottenLocalFiles;
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}
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/**
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* Returns the list of files and folders contained in the synchronized folder,
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* if called after synchronization is complete.
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*
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* @return List of files and folders contained in the synchronized folder.
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*/
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public List<OCFile> getChildren() {
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return mChildren;
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}
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/**
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* Performs the synchronization.
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*
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* {@inheritDoc}
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*/
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@Override
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protected RemoteOperationResult run(OwnCloudClient client) {
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RemoteOperationResult result;
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mFailsInKeptInSyncFound = 0;
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mConflictsFound = 0;
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mForgottenLocalFiles.clear();
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if (OCFile.ROOT_PATH.equals(mLocalFolder.getRemotePath()) && !mSyncFullAccount && !mOnlyFileMetadata) {
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updateOCVersion(client);
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updateUserProfile();
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}
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result = checkForChanges(client);
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if (result.isSuccess()) {
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if (mRemoteFolderChanged) {
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result = fetchAndSyncRemoteFolder(client);
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} else {
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mChildren = mStorageManager.getFolderContent(mLocalFolder, false);
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}
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if (result.isSuccess()) {
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// request for the synchronization of KEPT-IN-SYNC file contents
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startContentSynchronizations(mFilesToSyncContents);
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}
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mLocalFolder.setLastSyncDateForData(System.currentTimeMillis());
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mStorageManager.saveFile(mLocalFolder);
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}
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if (!mSyncFullAccount) {
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sendLocalBroadcast(
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EVENT_SINGLE_FOLDER_CONTENTS_SYNCED, mLocalFolder.getRemotePath(), result
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);
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}
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if (result.isSuccess() && !mSyncFullAccount && !mOnlyFileMetadata) {
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refreshSharesForFolder(client); // share result is ignored
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}
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if (!mSyncFullAccount) {
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sendLocalBroadcast(
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EVENT_SINGLE_FOLDER_SHARES_SYNCED, mLocalFolder.getRemotePath(), result
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);
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}
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return result;
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}
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private void updateOCVersion(OwnCloudClient client) {
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UpdateOCVersionOperation update = new UpdateOCVersionOperation(mAccount, mContext);
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RemoteOperationResult result = update.execute(client);
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if (result.isSuccess()) {
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// Update Capabilities for this account
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updateCapabilities();
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}
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}
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private void updateUserProfile() {
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GetUserProfileOperation update = new GetUserProfileOperation();
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RemoteOperationResult result = update.execute(mStorageManager, mContext);
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if (!result.isSuccess()) {
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Log_OC.w(TAG, "Couldn't update user profile from server");
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} else {
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Log_OC.i(TAG, "Got display name: " + result.getData().get(0));
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}
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}
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private void updateCapabilities() {
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GetCapabilitiesOperation getCapabilities = new GetCapabilitiesOperation();
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RemoteOperationResult result = getCapabilities.execute(mStorageManager, mContext);
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if (!result.isSuccess()) {
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Log_OC.w(TAG, "Update Capabilities unsuccessfully");
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}
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}
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private RemoteOperationResult checkForChanges(OwnCloudClient client) {
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mRemoteFolderChanged = true;
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RemoteOperationResult result;
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String remotePath = mLocalFolder.getRemotePath();
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Log_OC.d(TAG, "Checking changes in " + mAccount.name + remotePath);
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// remote request
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result = new ReadFileRemoteOperation(remotePath).execute(client);
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if (result.isSuccess()) {
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OCFile remoteFolder = FileStorageUtils.fillOCFile((RemoteFile) result.getData().get(0));
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if (!mIgnoreETag) {
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// check if remote and local folder are different
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String remoteFolderETag = remoteFolder.getEtag();
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if (remoteFolderETag != null) {
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mRemoteFolderChanged =
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!(remoteFolderETag.equalsIgnoreCase(mLocalFolder.getEtag()));
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} else {
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Log_OC.e(TAG, "Checked " + mAccount.name + remotePath + " : " +
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"No ETag received from server");
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}
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}
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result = new RemoteOperationResult(ResultCode.OK);
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Log_OC.i(TAG, "Checked " + mAccount.name + remotePath + " : " +
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(mRemoteFolderChanged ? "changed" : "not changed"));
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} else {
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// check failed
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if (result.getCode() == ResultCode.FILE_NOT_FOUND) {
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removeLocalFolder();
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}
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if (result.isException()) {
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Log_OC.e(TAG, "Checked " + mAccount.name + remotePath + " : " +
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result.getLogMessage(), result.getException());
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} else {
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Log_OC.e(TAG, "Checked " + mAccount.name + remotePath + " : " +
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result.getLogMessage());
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}
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}
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return result;
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}
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private RemoteOperationResult fetchAndSyncRemoteFolder(OwnCloudClient client) {
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String remotePath = mLocalFolder.getRemotePath();
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RemoteOperationResult result = new ReadFolderRemoteOperation(remotePath).execute(client);
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Log_OC.d(TAG, "Synchronizing " + mAccount.name + remotePath);
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if (result.isSuccess()) {
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synchronizeData(result.getData());
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if (mConflictsFound > 0 || mFailsInKeptInSyncFound > 0) {
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result = new RemoteOperationResult(ResultCode.SYNC_CONFLICT);
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// should be a different result code, but will do the job
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}
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} else {
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if (result.getCode() == ResultCode.FILE_NOT_FOUND) {
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removeLocalFolder();
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}
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}
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return result;
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}
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private void removeLocalFolder() {
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if (mStorageManager.fileExists(mLocalFolder.getFileId())) {
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String currentSavePath = FileStorageUtils.getSavePath(mAccount.name);
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mStorageManager.removeFolder(
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mLocalFolder,
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true,
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mLocalFolder.isDown() && mLocalFolder.getStoragePath().startsWith(currentSavePath)
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);
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}
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}
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/**
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* Synchronizes the data retrieved from the server about the contents of the target folder
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* with the current data in the local database.
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*
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* Grants that mChildren is updated with fresh data after execution.
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*
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* @param folderAndFiles Remote folder and children files in Folder
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*/
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private void synchronizeData(List<Object> folderAndFiles) {
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// get 'fresh data' from the database
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mLocalFolder = mStorageManager.getFileByPath(mLocalFolder.getRemotePath());
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// parse data from remote folder
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OCFile remoteFolder = FileStorageUtils.fillOCFile((RemoteFile) folderAndFiles.get(0));
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remoteFolder.setParentId(mLocalFolder.getParentId());
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remoteFolder.setFileId(mLocalFolder.getFileId());
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Log_OC.d(TAG, "Remote folder " + mLocalFolder.getRemotePath() + " changed - starting update of local data ");
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List<OCFile> updatedFiles = new ArrayList<>(folderAndFiles.size() - 1);
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mFilesToSyncContents.clear();
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// if local folder is encrypted, download fresh metadata
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boolean encryptedAncestor = FileStorageUtils.checkEncryptionStatus(mLocalFolder, mStorageManager);
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mLocalFolder.setEncrypted(encryptedAncestor);
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// update permission
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mLocalFolder.setPermissions(remoteFolder.getPermissions());
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DecryptedFolderMetadata metadata = getDecryptedFolderMetadata(encryptedAncestor);
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// get current data about local contents of the folder to synchronize
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Map<String, OCFile> localFilesMap = prefillLocalFilesMap(metadata,
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mStorageManager.getFolderContent(mLocalFolder, false));
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// loop to update every child
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OCFile remoteFile;
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OCFile localFile;
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OCFile updatedFile;
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RemoteFile r;
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for (int i = 1; i < folderAndFiles.size(); i++) {
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/// new OCFile instance with the data from the server
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r = (RemoteFile) folderAndFiles.get(i);
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remoteFile = FileStorageUtils.fillOCFile(r);
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// new OCFile instance to merge fresh data from server with local state
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updatedFile = FileStorageUtils.fillOCFile(r);
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updatedFile.setParentId(mLocalFolder.getFileId());
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// retrieve local data for the read file
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localFile = localFilesMap.remove(remoteFile.getRemotePath());
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// add to updatedFile data about LOCAL STATE (not existing in server)
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updatedFile.setLastSyncDateForProperties(mCurrentSyncTime);
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// add to updatedFile data from local and remote file
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setLocalFileDataOnUpdatedFile(remoteFile, localFile, updatedFile, mRemoteFolderChanged);
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// check and fix, if needed, local storage path
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FileStorageUtils.searchForLocalFileInDefaultPath(updatedFile, mAccount);
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// update file name for encrypted files
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if (metadata != null) {
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updateFileNameForEncryptedFile(metadata, updatedFile);
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}
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// we parse content, so either the folder itself or its direct parent (which we check) must be encrypted
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boolean encrypted = updatedFile.isEncrypted() || mLocalFolder.isEncrypted();
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updatedFile.setEncrypted(encrypted);
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updatedFiles.add(updatedFile);
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}
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// save updated contents in local database
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mStorageManager.saveFolder(remoteFolder, updatedFiles, localFilesMap.values());
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mChildren = updatedFiles;
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}
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@Nullable
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private DecryptedFolderMetadata getDecryptedFolderMetadata(boolean encryptedAncestor) {
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DecryptedFolderMetadata metadata;
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if (encryptedAncestor && android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) {
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metadata = EncryptionUtils.downloadFolderMetadata(mLocalFolder, getClient(), mContext, mAccount);
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} else {
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metadata = null;
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}
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return metadata;
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}
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private void updateFileNameForEncryptedFile(@NonNull DecryptedFolderMetadata metadata, OCFile updatedFile) {
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updatedFile.setEncryptedFileName(updatedFile.getFileName());
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try {
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String decryptedFileName = metadata.getFiles().get(updatedFile.getFileName()).getEncrypted()
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.getFilename();
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String mimetype = metadata.getFiles().get(updatedFile.getFileName()).getEncrypted().getMimetype();
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updatedFile.setFileName(decryptedFileName);
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if (mimetype == null || mimetype.isEmpty()) {
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updatedFile.setMimeType("application/octet-stream");
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} else {
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updatedFile.setMimeType(mimetype);
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}
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} catch (NullPointerException e) {
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Log_OC.e(TAG, "Metadata for file " + updatedFile.getFileId() + " not found!");
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}
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}
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private void setLocalFileDataOnUpdatedFile(OCFile remoteFile, OCFile localFile, OCFile updatedFile, boolean remoteFolderChanged) {
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if (localFile != null) {
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updatedFile.setFileId(localFile.getFileId());
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updatedFile.setLastSyncDateForData(localFile.getLastSyncDateForData());
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updatedFile.setModificationTimestampAtLastSyncForData(
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localFile.getModificationTimestampAtLastSyncForData()
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);
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updatedFile.setStoragePath(localFile.getStoragePath());
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// eTag will not be updated unless file CONTENTS are synchronized
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if (!updatedFile.isFolder() && localFile.isDown() &&
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!updatedFile.getEtag().equals(localFile.getEtag())) {
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updatedFile.setEtagInConflict(updatedFile.getEtag());
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}
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updatedFile.setEtag(localFile.getEtag());
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if (updatedFile.isFolder()) {
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updatedFile.setFileLength(remoteFile.getFileLength());
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updatedFile.setMountType(remoteFile.getMountType());
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} else if (remoteFolderChanged && MimeTypeUtil.isImage(remoteFile) &&
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remoteFile.getModificationTimestamp() !=
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localFile.getModificationTimestamp()) {
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updatedFile.setUpdateThumbnailNeeded(true);
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Log.d(TAG, "Image " + remoteFile.getFileName() + " updated on the server");
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}
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updatedFile.setPublicLink(localFile.getPublicLink());
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updatedFile.setSharedViaLink(localFile.isSharedViaLink());
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updatedFile.setSharedWithSharee(localFile.isSharedWithSharee());
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} else {
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// remote eTag will not be updated unless file CONTENTS are synchronized
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updatedFile.setEtag("");
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}
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// eTag on Server is used for thumbnail validation
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updatedFile.setEtagOnServer(remoteFile.getEtag());
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}
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@NonNull
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private Map<String, OCFile> prefillLocalFilesMap(DecryptedFolderMetadata metadata, List<OCFile> localFiles) {
|
|
Map<String, OCFile> localFilesMap = new HashMap<>(localFiles.size());
|
|
|
|
for (OCFile file : localFiles) {
|
|
String remotePath = file.getRemotePath();
|
|
|
|
if (metadata != null && !file.isFolder()) {
|
|
remotePath = file.getParentRemotePath() + file.getEncryptedFileName();
|
|
}
|
|
localFilesMap.put(remotePath, file);
|
|
}
|
|
return localFilesMap;
|
|
}
|
|
|
|
/**
|
|
* Performs a list of synchronization operations, determining if a download or upload is needed
|
|
* or if exists conflict due to changes both in local and remote contents of the each file.
|
|
*
|
|
* If download or upload is needed, request the operation to the corresponding service and goes
|
|
* on.
|
|
*
|
|
* @param filesToSyncContents Synchronization operations to execute.
|
|
*/
|
|
private void startContentSynchronizations(List<SynchronizeFileOperation> filesToSyncContents) {
|
|
RemoteOperationResult contentsResult;
|
|
for (SynchronizeFileOperation op : filesToSyncContents) {
|
|
contentsResult = op.execute(mStorageManager, mContext); // async
|
|
if (!contentsResult.isSuccess()) {
|
|
if (contentsResult.getCode() == ResultCode.SYNC_CONFLICT) {
|
|
mConflictsFound++;
|
|
} else {
|
|
mFailsInKeptInSyncFound++;
|
|
if (contentsResult.getException() != null) {
|
|
Log_OC.e(TAG, "Error while synchronizing favourites : "
|
|
+ contentsResult.getLogMessage(), contentsResult.getException());
|
|
} else {
|
|
Log_OC.e(TAG, "Error while synchronizing favourites : "
|
|
+ contentsResult.getLogMessage());
|
|
}
|
|
}
|
|
} // won't let these fails break the synchronization process
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Syncs the Share resources for the files contained in the folder refreshed (children, not deeper descendants).
|
|
*
|
|
* @param client Handler of a session with an OC server.
|
|
* @return The result of the remote operation retrieving the Share resources in the folder refreshed by
|
|
* the operation.
|
|
*/
|
|
private RemoteOperationResult refreshSharesForFolder(OwnCloudClient client) {
|
|
RemoteOperationResult result;
|
|
|
|
// remote request
|
|
GetRemoteSharesForFileOperation operation =
|
|
new GetRemoteSharesForFileOperation(mLocalFolder.getRemotePath(), true, true);
|
|
result = operation.execute(client);
|
|
|
|
if (result.isSuccess()) {
|
|
// update local database
|
|
ArrayList<OCShare> shares = new ArrayList<>();
|
|
OCShare share;
|
|
for (Object obj : result.getData()) {
|
|
share = (OCShare) obj;
|
|
|
|
if (!ShareType.NO_SHARED.equals(share.getShareType())) {
|
|
shares.add(share);
|
|
}
|
|
}
|
|
mStorageManager.saveSharesInFolder(shares, mLocalFolder);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Sends a message to any application component interested in the progress
|
|
* of the synchronization.
|
|
*
|
|
* @param event broadcast event (Intent Action)
|
|
* @param dirRemotePath Remote path of a folder that was just synchronized
|
|
* (with or without success)
|
|
* @param result remote operation result
|
|
*/
|
|
private void sendLocalBroadcast(String event, String dirRemotePath, RemoteOperationResult result) {
|
|
Log_OC.d(TAG, "Send broadcast " + event);
|
|
Intent intent = new Intent(event);
|
|
intent.putExtra(FileSyncAdapter.EXTRA_ACCOUNT_NAME, mAccount.name);
|
|
|
|
if (dirRemotePath != null) {
|
|
intent.putExtra(FileSyncAdapter.EXTRA_FOLDER_PATH, dirRemotePath);
|
|
}
|
|
|
|
DataHolderUtil dataHolderUtil = DataHolderUtil.getInstance();
|
|
String dataHolderItemId = dataHolderUtil.nextItemId();
|
|
dataHolderUtil.save(dataHolderItemId, result);
|
|
intent.putExtra(FileSyncAdapter.EXTRA_RESULT, dataHolderItemId);
|
|
|
|
intent.setPackage(mContext.getPackageName());
|
|
mContext.sendStickyBroadcast(intent);
|
|
}
|
|
}
|