[imp] IDN auth failing in imp

[info at interpost.biz]

In response to your #1, below,  dovecot has no problems with IDN's I  
am told. I tried installing pecl/idn extension - but it is very old  
and will not install with newer version of php 5. (I saw your exchange  
with Steffan in february of this year late). I am running php 5.4.26,  
and using sql authentication backend in horde.

Have you considered trying a php class for idn and horde/imp:   
http://www.phpclasses.org/package/1509-PHP-Convert-from-and-to-IDNA-Punycode-domain-names.html  
?

I don't know what to try. You never responded to my earlier querries  
re mbstring - or setting intl to use UTF-8?

You mentioned that horde doesn't accept UTF-8 as input for  
authentication, that it must be ascii.  Is there only one table I need  
to check in the horde db?  Will modification of any of the character  
sets in the horde DB resolve this problem?

Has anyone, to your knowledge, ever gotten horde AND imp to  
authenticate a login using an IDN?

Thanks,

ed

>>
>>
>>>> Tue, 12 Aug 2014 13:15:50 +0000
>>>> Connection to: imap://localhost/
>>>> Server connection took 0,0008 seconds.
>> S: * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID
>> ENABLE IDLE STARTTLS AUTH=PLAIN AUTH=LOGIN] Dovecot ready.
>> C: 1 STARTTLS
>> S: 1 OK Begin TLS negotiation now.
>>>> Command 1 took 0,0017 seconds.
>>>> Successfully completed TLS negotiation.
>> C: 2 CAPABILITY
>> S: * CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE
>> IDLE AUTH=PLAIN AUTH=LOGIN
>> S: 2 OK Pre-login capabilities listed, post-login capabilities have more.
>>>> Command 2 took 0,0022 seconds.
>> C: 3 AUTHENTICATE PLAIN [INITIAL CLIENT RESPONSE (username:
>> info at bo?teauxlettres.net)]
>> S: 3 NO [AUTHENTICATIONFAILED] Authentication failed.
>>>> Command 3 took 1,5036 seconds.
>
> This is correct.  IMP is sending the "AUTHENTICATE PLAIN" client
> response using the full-IDN e-mail domain.  If Dovecot is rejecting
> this, then this is an issue with the authentication and/or
> configuration on the Dovecot side.  Are you sure the underlying
> authentication backend in Dovecot can handle these IDN names?
>
>> C: 4 LOGIN info at bo?teauxlettres.net [PASSWORD]
>> info at bo?teauxlettres.netC:  correctpassword
>>>> Slow Command: 6,007 seconds
>> S: 4 NO [AUTHENTICATIONFAILED] Authentication failed.
>
> This is actually incorrect behavior on Horde_Imap_Client's part.
> LOGIN supports ASCII strings only.  We should catch this in
> Horde_Imap_Client so that we don't waste a server round-trip, and the
> corresponding wait time for the server to reject auth, when we know it
> can never be successful (it's still going to throw an error - it's
> just going to happen much faster).
>
> michael
>