Re: problems with ssh_userauth_list

[Tilo Eckert <tilo.eckert@xxxxxxx>]

If you handle SSH_AUTH_AGAIN with a loop, you probably want to use
blocking mode instead. Non-blocking mode is suitable if your application
works asynchronously.

Am 05.05.2017 um 10:47 schrieb Daniel Kroker:
> thanks i try it.
> 
> whats the best way to handle SSH_AUTH_AGAIN ? while loop and try again
> ssh_userauth_none ?
> 
> Am 05.05.2017 um 10:32 schrieb Tilo Eckert:
>> You did not check the return code "rc".
>>
>> You could already be logged in after the ssh_userauth_none() call (e.g.
>> IP based auth). An error could occur (SSH_AUTH_ERROR) or if you are in
>> non-blocking mode SSH_AUTH_AGAIN could be returned.
>>
>> Am 05.05.2017 um 10:24 schrieb Daniel Kroker:
>>> Hi,
>>>
>>> thanks for your reply. i call ssh_userath_none.
>>>
>>> Here is a small snippet from our program:
>>>
>>> if(!session)
>>>
>>> {
>>>
>>> qDebug()<<"Session not established";
>>>
>>> qDebug()<<"SSH Error 12: ",ssh_get_error(session);
>>>
>>> return-1;
>>>
>>> }
>>>
>>> rc=ssh_userauth_none(session,NULL);
>>>
>>> method=ssh_userauth_list(session,NULL);
>>>
>>> qDebug()<<"method: "<<QString::number(method);
>>>
>>> if(method&SSH_AUTH_METHOD_PASSWORD)
>>>
>>> { ....
>>>
>>>
>>>
>>> Am 05.05.2017 um 10:22 schrieb Tilo Eckert:
>>>> http://api.libssh.org/stable/group__libssh__auth.html#ga35d44897a44b4bb3b7c01108c1812a37
>>>>
>>>> You either did not call ssh_userauth_none() before or the server does
>>>> not allow any of the supported auth methods.
>>>>
>>>> Regards
>>>> Tilo
>>>>
>>>> Am 05.05.2017 um 09:26 schrieb Daniel Kroker:
>>>>> Hi,
>>>>>
>>>>> we have the problem that in some cases ssh_userauth_list(session,NULL);
>>>>> returned 0.
>>>>> What is 0 exacly?
>>> -- 
>>> Mit freundlichen Grüßen
>>> Daniel Kroker
>>>
>>> VENTAS AG                            20+ Jahre ERP-Erfahrung!
>>> Web: www.ventas.de
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>>>
>>
> 
> -- 
> Mit freundlichen Grüßen
> Daniel Kroker
> 
> VENTAS AG                            20+ Jahre ERP-Erfahrung!
> Web: www.ventas.de
> Fon: 040 / 32 33 34 0
> Fax: 040 / 32 33 34 38
> Firmensitz: Neuer Wall 10, 20354 Hamburg, Deutschland
> Registergericht: Hamburg, HRB 80 297 Ust.IdNr.: DE118686712
> Vorstandsvorsitzender: Dipl. Ing. Alain Siverly
> Aufsichtsratsvorsitzender: Dr. Olaf Rehme 
>