RequestX11.java

/*
 * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
 * and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other materials provided with
 * the distribution.
 *
 * 3. The names of the authors may not be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.jcraft.jsch;

class RequestX11 extends Request {
  public void setCookie(String cookie) {
    ChannelX11.cookie = Util.str2byte(cookie);
  }

  @Override
  public void request(Session session, Channel channel) throws Exception {
    super.request(session, channel);

    Buffer buf = new Buffer();
    Packet packet = new Packet(buf);

    // byte SSH_MSG_CHANNEL_REQUEST(98)
    // uint32 recipient channel
    // string request type // "x11-req"
    // boolean want reply // 0
    // boolean single connection
    // string x11 authentication protocol // "MIT-MAGIC-COOKIE-1".
    // string x11 authentication cookie
    // uint32 x11 screen number
    packet.reset();
    buf.putByte((byte) Session.SSH_MSG_CHANNEL_REQUEST);
    buf.putInt(channel.getRecipient());
    buf.putString(Util.str2byte("x11-req"));
    buf.putByte((byte) (waitForReply() ? 1 : 0));
    buf.putByte((byte) 0);
    buf.putString(Util.str2byte("MIT-MAGIC-COOKIE-1"));
    buf.putString(ChannelX11.getFakedCookie(session));
    buf.putInt(0);
    write(packet);

    session.x11_forwarding = true;
  }
}