sshdataoutputstream.java

来自「一个非常好的ssh客户端实现」· Java 代码 · 共 43 行

/******************************************************************************
 *
 * Copyright (c) 1999-2003 AppGate Network Security AB. All Rights Reserved.
 * 
 * This file contains Original Code and/or Modifications of Original Code as
 * defined in and that are subject to the MindTerm Public Source License,
 * Version 2.0, (the 'License'). You may not use this file except in compliance
 * with the License.
 * 
 * You should have received a copy of the MindTerm Public Source License
 * along with this software; see the file LICENSE.  If not, write to
 * AppGate Network Security AB, Otterhallegatan 2, SE-41118 Goteborg, SWEDEN
 *
 *****************************************************************************/

package com.mindbright.ssh;

import java.io.*;
import java.math.BigInteger;

public class SSHDataOutputStream extends DataOutputStream {

  SSHDataOutputStream(OutputStream out) {
    super(out);
  }

  public void writeBigInteger(BigInteger bi) throws IOException {
    short bytes = (short)((bi.bitLength() + 7) / 8);
    byte[] raw  = bi.toByteArray();
    writeShort(bi.bitLength());
    if(raw[0] == 0)
      write(raw, 1, bytes);
    else
      write(raw, 0, bytes);
  }

  public void writeString(String str) throws IOException {
    byte[] raw = str.getBytes();
    writeInt(raw.length);
    write(raw);
  }
}