Re: [JSch-users] Getting "Auth fail" after 7 successful connections.

[Andrei T. <an...@tc...>]

Excellent!!! This is exactly what is happening.  May I make a small  
suggestion? It looks like JSch.addIdentity attempts to prevent same  
identity file been added multiple times :

   	public void addIdentity(String foo, String bar) throws  
JSchException {
		Identity identity = new IdentityFile(foo, this);
		if (bar != null) {
			identity.setPassphrase(bar);
		}
		synchronized (identities) {
			if (!identities.contains(identity)) { // This will not work,  
unless IdentityFile implements equals()
				identities.addElement(identity);
			}
		}
   	}

But unfortunately IdentityFile class lucks "equals( Object o )"  
method which makes "contains" method return false every time.  As  
soon as I added this

   public boolean equals( Object o ) {
	  if( o instanceof IdentityFile ) {
		  return identity.equals( ((IdentityFile)o).identity);
	  } else {
		  return super.equals( o );
	  }
   }

to com.jcraft.jsch.IdenityFile class, my problem went away.


Thank you very much for quick response.

Andrei Tchijov




On May 18, 2006, at 11:53 PM, Atsuhiko Yamanaka wrote:

> Hi,
>
>    +-From: Andrei Tchijov <an...@tc...> --
>    |_Date: Thu, 18 May 2006 23:01:23 -0400 ______
>    |
>    |I am experiencing very strange problem.  In my application I  
> connect
>    |to remote server and setting up local tunnel.  I can do it 7  
> times in
>    |a row. On 8th attempt I am getting
>    |...
>    |Caused by: com.jcraft.jsch.JSchException: Auth fail
>    |         at com.jcraft.jsch.Session.connect(Session.java:390)
>    |         at com.jcraft.jsch.Session.connect(Session.java:143)
>    |...
>    |Once I get into this state, all consecutive attempts end up the  
> same
>    |way.
>    ...
>    |PS I am using JSch 1.28 on Mac OS X (both client and server side).
>    |Authentication is password base.
>
> It seems an exception has occurred in a trial for public-key  
> authentication.
> Have you invoked "jsch.addIdentity" method?  If you don't invoke it,
> public-key authentication will not be tried.
>
> I guess that you have invoked "jsch.addIdentity" 8 times.
> Is this guess correct?   By invoking that method, 8 key will be cached
> internally and the "UserAuthPublicKey.start" method has tried  
> public-key
> authentication 8 times with wrong keys, and sshd has rejected the  
> connection
> because of so many failures.  7 times failure may be acceptable for  
> that
> sshd, but 8 times failure not. Such a behavior must be depended on its
> implementation, I guess.
>
>
>
> Sincerely,
> --
> Atsuhiko Yamanaka
> JCraft,Inc.
> 1-14-20 HONCHO AOBA-KU,
> SENDAI, MIYAGI 980-0014 Japan.
> Tel +81-22-723-2150
>     +1-415-578-3454
> Fax +81-22-224-8773
> Skype callto://jcraft/
>
>
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