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1 package ch.ethz.ssh2.packets;
2
3 import java.io.IOException  ;
4
5
11 public class PacketOpenSessionChannel
12 {
13 byte[] payload;
14
15 int channelID;
16 int initialWindowSize;
17 int maxPacketSize;
18
19 public PacketOpenSessionChannel(int channelID, int initialWindowSize,
20 int maxPacketSize)
21 {
22 this.channelID = channelID;
23 this.initialWindowSize = initialWindowSize;
24 this.maxPacketSize = maxPacketSize;
25 }
26
27 public PacketOpenSessionChannel(byte payload[], int off, int len) throws IOException
28 {
29 this.payload = new byte[len];
30 System.arraycopy(payload, off, this.payload, 0, len);
31
32 TypesReader tr = new TypesReader(payload);
33
34 int packet_type = tr.readByte();
35
36 if (packet_type != Packets.SSH_MSG_CHANNEL_OPEN)
37 throw new IOException ("This is not a SSH_MSG_CHANNEL_OPEN! ("
38 + packet_type + ")");
39
40 channelID = tr.readUINT32();
41 initialWindowSize = tr.readUINT32();
42 maxPacketSize = tr.readUINT32();
43
44 if (tr.remain() != 0)
45 throw new IOException ("Padding in SSH_MSG_CHANNEL_OPEN packet!");
46 }
47
48 public byte[] getPayload()
49 {
50 if (payload == null)
51 {
52 TypesWriter tw = new TypesWriter();
53 tw.writeByte(Packets.SSH_MSG_CHANNEL_OPEN);
54 tw.writeString("session");
55 tw.writeUINT32(channelID);
56 tw.writeUINT32(initialWindowSize);
57 tw.writeUINT32(maxPacketSize);
58 payload = tw.getBytes();
59 }
60 return payload;
61 }
62 }
63 |
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