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1 package com.trilead.ssh2.packets;
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2
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3 import java.io.IOException;
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4
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5 /**
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6 * PacketChannelOpenConfirmation.
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7 *
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8 * @author Christian Plattner, plattner@trilead.com
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9 * @version $Id: PacketChannelOpenConfirmation.java,v 1.1 2007/10/15 12:49:55 cplattne Exp $
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10 */
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11 public class PacketChannelOpenConfirmation {
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12 byte[] payload;
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13
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14 public int recipientChannelID;
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15 public int senderChannelID;
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16 public int initialWindowSize;
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17 public int maxPacketSize;
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18
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19 public PacketChannelOpenConfirmation(int recipientChannelID, int senderChannelID, int initialWindowSize,
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20 int maxPacketSize) {
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21 this.recipientChannelID = recipientChannelID;
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22 this.senderChannelID = senderChannelID;
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23 this.initialWindowSize = initialWindowSize;
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24 this.maxPacketSize = maxPacketSize;
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25 }
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26
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27 public PacketChannelOpenConfirmation(byte payload[], int off, int len) throws IOException {
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28 this.payload = new byte[len];
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29 System.arraycopy(payload, off, this.payload, 0, len);
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30 TypesReader tr = new TypesReader(payload, off, len);
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31 int packet_type = tr.readByte();
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32
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33 if (packet_type != Packets.SSH_MSG_CHANNEL_OPEN_CONFIRMATION)
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34 throw new IOException(
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35 "This is not a SSH_MSG_CHANNEL_OPEN_CONFIRMATION! ("
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36 + packet_type + ")");
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37
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38 recipientChannelID = tr.readUINT32();
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39 senderChannelID = tr.readUINT32();
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40 initialWindowSize = tr.readUINT32();
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41 maxPacketSize = tr.readUINT32();
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42
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43 if (tr.remain() != 0)
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44 throw new IOException("Padding in SSH_MSG_CHANNEL_OPEN_CONFIRMATION packet!");
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45 }
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46
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47 public byte[] getPayload() {
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48 if (payload == null) {
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49 TypesWriter tw = new TypesWriter();
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50 tw.writeByte(Packets.SSH_MSG_CHANNEL_OPEN_CONFIRMATION);
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51 tw.writeUINT32(recipientChannelID);
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52 tw.writeUINT32(senderChannelID);
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53 tw.writeUINT32(initialWindowSize);
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54 tw.writeUINT32(maxPacketSize);
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55 payload = tw.getBytes();
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56 }
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57
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58 return payload;
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59 }
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60 }
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