/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.activemq.blob;
import java.io.IOException;
import java.io.InputStream;
import java.net.ConnectException;
import java.net.URL;
import javax.jms.JMSException;
import org.apache.activemq.command.ActiveMQBlobMessage;
import org.apache.commons.net.ftp.FTPClient;
/**
* A FTP implementation for {@link BlobDownloadStrategy}.
*/
public class FTPBlobDownloadStrategy implements BlobDownloadStrategy {
private String ftpUser;
private String ftpPass;
public InputStream getInputStream(ActiveMQBlobMessage message) throws IOException, JMSException {
URL url = message.getURL();
setUserInformation(url.getUserInfo());
String connectUrl = url.getHost();
int port = url.getPort() < 1 ? 21 : url.getPort();
FTPClient ftp = new FTPClient();
try {
ftp.connect(connectUrl, port);
} catch(ConnectException e) {
throw new JMSException("Problem connecting the FTP-server");
}
if(!ftp.login(ftpUser, ftpPass)) {
ftp.quit();
ftp.disconnect();
throw new JMSException("Cant Authentificate to FTP-Server");
}
String path = url.getPath();
String workingDir = path.substring(0, path.lastIndexOf("/"));
String file = path.substring(path.lastIndexOf("/")+1);
ftp.changeWorkingDirectory(workingDir);
ftp.setFileType(FTPClient.BINARY_FILE_TYPE);
InputStream input = ftp.retrieveFileStream(file);
ftp.quit();
ftp.disconnect();
return input;
}
private void setUserInformation(String userInfo) {
if(userInfo != null) {
String[] userPass = userInfo.split(":");
if(userPass.length > 0) this.ftpUser = userPass[0];
if(userPass.length > 1) this.ftpPass = userPass[1];
} else {
this.ftpUser = "anonymous";
this.ftpPass = "anonymous";
}
}
}