org.globus.ftp.extended.GridFTPOutputStream.java Source code

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Here is the source code for org.globus.ftp.extended.GridFTPOutputStream.java

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/*
 * Copyright 1999-2006 University of Chicago
 *
 * Licensed 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.globus.ftp.extended;

import java.io.OutputStream;
import java.io.BufferedOutputStream;
import java.io.IOException;

import org.globus.gsi.gssapi.net.GssOutputStream;
//import org.globus.util.Base64;
import org.bouncycastle.util.encoders.Base64;

import org.ietf.jgss.GSSContext;

public class GridFTPOutputStream extends GssOutputStream {

    private static final byte[] CRLF = "\r\n".getBytes();
    private static final byte[] ADAT = "ADAT ".getBytes();
    private static final byte[] MIC = "MIC ".getBytes();
    private static final byte[] ENC = "ENC ".getBytes();

    public GridFTPOutputStream(OutputStream out, GSSContext context) {
        super(new BufferedOutputStream(out), context);
    }

    public void flush() throws IOException {
        if (this.index == 0)
            return;
        if (this.context.getConfState()) {
            writeToken(ENC, wrap());
        } else {
            writeToken(MIC, wrap());
        }
        this.index = 0;
    }

    public void writeHandshakeToken(byte[] token) throws IOException {
        writeToken(ADAT, token);
    }

    private void writeToken(byte[] header, byte[] token) throws IOException {
        this.out.write(header);
        this.out.write(Base64.encode(token));
        this.out.write(CRLF);
        this.out.flush();
    }

}