mirror of
https://github.com/owncloud/android-library.git
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113 lines
4.8 KiB
Java
113 lines
4.8 KiB
Java
/* ownCloud Android Library is available under MIT license
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* Copyright (C) 2015 ownCloud Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*/
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package com.owncloud.android.lib.resources.files;
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import org.apache.commons.httpclient.HttpStatus;
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import org.apache.commons.httpclient.methods.HeadMethod;
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import android.content.Context;
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import android.net.ConnectivityManager;
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import com.owncloud.android.lib.common.OwnCloudClient;
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import com.owncloud.android.lib.common.network.WebdavUtils;
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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.utils.Log_OC;
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/**
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* Operation to check the existence or absence of a path in a remote server.
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*
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* @author David A. Velasco
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*/
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public class ExistenceCheckRemoteOperation extends RemoteOperation {
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/** Maximum time to wait for a response from the server in MILLISECONDs. */
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public static final int TIMEOUT = 10000;
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private static final String TAG = ExistenceCheckRemoteOperation.class.getSimpleName();
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private String mPath;
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private Context mContext;
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private boolean mSuccessIfAbsent;
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/**
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* Full constructor. Success of the operation will depend upon the value of successIfAbsent.
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*
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* @param remotePath Path to append to the URL owned by the client instance.
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* @param context Android application context.
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* @param successIfAbsent When 'true', the operation finishes in success if the path does
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* NOT exist in the remote server (HTTP 404).
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*/
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public ExistenceCheckRemoteOperation(String remotePath, Context context, boolean successIfAbsent) {
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mPath = (remotePath != null) ? remotePath : "";
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mContext = context;
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mSuccessIfAbsent = successIfAbsent;
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}
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@Override
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protected RemoteOperationResult run(OwnCloudClient client) {
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if (!isOnline()) {
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return new RemoteOperationResult(RemoteOperationResult.ResultCode.NO_NETWORK_CONNECTION);
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}
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RemoteOperationResult result = null;
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HeadMethod head = null;
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try {
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head = new HeadMethod(client.getWebdavUri() + WebdavUtils.encodePath(mPath));
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int status = client.executeMethod(head, TIMEOUT, TIMEOUT);
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client.exhaustResponse(head.getResponseBodyAsStream());
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boolean success = (status == HttpStatus.SC_OK && !mSuccessIfAbsent) ||
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(status == HttpStatus.SC_NOT_FOUND && mSuccessIfAbsent);
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result = new RemoteOperationResult(success, status, head.getResponseHeaders());
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Log_OC.d(TAG, "Existence check for " + client.getWebdavUri() +
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WebdavUtils.encodePath(mPath) + " targeting for " +
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(mSuccessIfAbsent ? " absence " : " existence ") +
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"finished with HTTP status " + status + (!success?"(FAIL)":""));
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} catch (Exception e) {
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result = new RemoteOperationResult(e);
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Log_OC.e(TAG, "Existence check for " + client.getWebdavUri() +
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WebdavUtils.encodePath(mPath) + " targeting for " +
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(mSuccessIfAbsent ? " absence " : " existence ") + ": " +
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result.getLogMessage(), result.getException());
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} finally {
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if (head != null)
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head.releaseConnection();
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}
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return result;
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}
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private boolean isOnline() {
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ConnectivityManager cm = (ConnectivityManager) mContext
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.getSystemService(Context.CONNECTIVITY_SERVICE);
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return cm != null && cm.getActiveNetworkInfo() != null
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&& cm.getActiveNetworkInfo().isConnectedOrConnecting();
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}
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}
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