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Camel FTP support
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/**
 * 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.camel.component.file.remote;

import java.io.IOException;
import javax.net.ssl.SSLException;

import org.apache.camel.component.file.GenericFileOperationFailedException;
import org.apache.camel.util.ObjectHelper;
import org.apache.commons.net.ftp.FTPClientConfig;
import org.apache.commons.net.ftp.FTPSClient;

/**
 * FTP Secure (FTP over SSL/TLS) operations
 *
 * @version 
 */
public class FtpsOperations extends FtpOperations {

    public FtpsOperations(FTPSClient client, FTPClientConfig clientConfig) {
        super(client, clientConfig);
    }

    @Override
    public boolean connect(RemoteFileConfiguration configuration) throws GenericFileOperationFailedException {
        boolean answer = super.connect(configuration);

        FtpsConfiguration config = (FtpsConfiguration) configuration;
        if (answer) {
            try {
                String execProt = config.getExecProt();
                Long execPbsz = config.getExecPbsz();
                // use default values for prop and pbsz, unless told to not do so
                if (!config.isDisableSecureDataChannelDefaults()) {
                    if (ObjectHelper.isEmpty(execProt)) {
                        execProt = "P";
                    }
                    if (ObjectHelper.isEmpty(execPbsz)) {
                        execPbsz = 0L;
                    }
                }

                if (execPbsz != null) {
                    log.debug("FTPClient initializing with execPbsz={}", execPbsz);
                    getFtpClient().execPBSZ(execPbsz);
                }
                if (execProt != null) {
                    log.debug("FTPClient initializing with execProt={}", execProt);
                    getFtpClient().execPROT(execProt);
                }
            } catch (SSLException e) {
                throw new GenericFileOperationFailedException(client.getReplyCode(),
                        client.getReplyString(), e.getMessage(), e);
            } catch (IOException e) {
                throw new GenericFileOperationFailedException(client.getReplyCode(),
                        client.getReplyString(), e.getMessage(), e);
            }
        }

        return answer;
    }

    @Override
    protected FTPSClient getFtpClient() {
        return (FTPSClient) super.getFtpClient();
    }

}