[SSHD-203] Add session state notifications

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Fix Version/s: 0.9.0
• Environment: Windows
• Assignee: Guillaume Nodet
• Reporter: Andrew C
• Created: 08/Jan/13 15:40
• Updated: 19/Jul/13 08:05
• Resolved: 19/Jul/13 08:05

Description

To the best of my knowledge, there's no way, in a customised SSH server, to detect when the client connection's auth has successfully completed. As a hack I came up with:

public class RelaySshSession extends ServerSession {
private final RelayService relayService;
public RelaySshSession(RelayService relayService, SshServer server, IoSession sshIoSession) throws Exception

{ super(server, sshIoSession); this.relayService = relayService; }

@Override
public CloseFuture close(boolean immediately)

{ relayService.unbind(this); return super.close(immediately); }

private boolean authorized = false;
@Override
public WriteFuture writePacket(Buffer buffer) throws IOException {
if (!this.authorized) {
byte[] bytes = buffer.array();
if (bytes.length > 5 && bytes[5] == SshConstants.Message.SSH_MSG_USERAUTH_SUCCESS.toByte())

{ // need to send the auth packet before starting network session so that the // local service packets always follow the service. WriteFuture writeFuture = super.writePacket(buffer); // Tell the server side to start. relayService.bind(this); this.authorized = true; return writeFuture; }

}
return super.writePacket(buffer);
}
}

As an example for why this might be useful, consider a dispatcher that accepts multiple clients. As long as any client is active the custom server send dispatch messages.

Issue Links

• is related to: SSHD-211 Allow custom server services