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/* Nextcloud Android Library is available under MIT license
*
* @author Tobias Kaminsky
* Copyright (C) 2018 Tobias Kaminsky
* Copyright (C) 2018 Nextcloud GmbH
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
package com.owncloud.android.lib.resources.files;
import com.owncloud.android.lib.common.OwnCloudClient;
import com.owncloud.android.lib.common.network.WebdavUtils;
import com.owncloud.android.lib.common.operations.RemoteOperation;
import com.owncloud.android.lib.common.operations.RemoteOperationResult;
import com.owncloud.android.lib.common.operations.RemoteOperationResult.ResultCode;
import com.owncloud.android.lib.common.utils.Log_OC;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.jackrabbit.webdav.MultiStatusResponse;
import org.apache.jackrabbit.webdav.client.methods.PropFindMethod;
import org.apache.jackrabbit.webdav.property.DavPropertyName;
import org.apache.jackrabbit.webdav.property.DavPropertyNameSet;
import java.util.ArrayList;
/**
* Check if file is up to date, by checking only eTag
*/
public class CheckEtagRemoteOperation extends RemoteOperation {
private static final int SYNC_READ_TIMEOUT = 40000;
private static final int SYNC_CONNECTION_TIMEOUT = 5000;
private static final String TAG = CheckEtagRemoteOperation.class.getSimpleName();
private String path;
private String expectedEtag;
public CheckEtagRemoteOperation(String path, String expectedEtag) {
this.path = path;
this.expectedEtag = expectedEtag;
}
@Override
protected RemoteOperationResult run(OwnCloudClient client) {
PropFindMethod propfind = null;
try {
DavPropertyNameSet propSet = new DavPropertyNameSet();
propSet.add(DavPropertyName.GETETAG);
propfind = new PropFindMethod(client.getFilesDavUri(path),
propSet,
0);
int status = client.executeMethod(propfind, SYNC_READ_TIMEOUT, SYNC_CONNECTION_TIMEOUT);
if (status == HttpStatus.SC_MULTI_STATUS || status == HttpStatus.SC_OK) {
MultiStatusResponse resp = propfind.getResponseBodyAsMultiStatus().getResponses()[0];
String etag = WebdavUtils.parseEtag((String) resp.getProperties(HttpStatus.SC_OK)
.get(DavPropertyName.GETETAG).getValue());
if (etag.equals(expectedEtag)) {
return new RemoteOperationResult(ResultCode.ETAG_UNCHANGED);
} else {
RemoteOperationResult result = new RemoteOperationResult(ResultCode.ETAG_CHANGED);
ArrayList<Object> list = new ArrayList<>();
list.add(etag);
result.setData(list);
return result;
}
}
if (status == HttpStatus.SC_NOT_FOUND) {
return new RemoteOperationResult(ResultCode.FILE_NOT_FOUND);
}
} catch (Exception e) {
Log_OC.e(TAG, "Error while retrieving eTag");
} finally {
if (propfind != null) {
propfind.releaseConnection();
}
}
return new RemoteOperationResult(ResultCode.ETAG_CHANGED);
}
}
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