[horde] Horde authentication with IMP in a load-balanced environment

[Jan Schneider]

Zitat von Andy Dorman <adorman at ironicdesign.com>:

> Hi all, we are having difficulty working around our unique setup to  
> authenticate with IMP and I wonder if one of the developers could  
> point us in the right direction to fix this.  My apologies in  
> advance, I am NOT an experienced PHP programmer and am a bit hazy on  
> variable scopes and I believe that is a BIG part of my problem below.
>
> We are running the Latest Debian, Cyrus IMAP, and Horde 5.2.1 and  
> Imp 6.2.2 with LDAP for user credentials.  We are currently  
> authenticating using Horde and LDAP, but we would like the opening  
> app to be IMP and to do that we need to authenticate with IMP.
>
> The tricky part happens because we have a load balanced cluster of  
> web servers, each server supporting a block of our IMAP accounts.   
> So I might log into web server A and my IMAP is on server B.  So we  
> have to make sure the IMAP hostname is set correctly in order to  
> fetch mail.
>
> When we are using Horde auth with LDAP this is easily handled in  
> imp/backends.local.php.  Just grab the auth credentials, do a quick  
> LDAP guery to get the IMAP server name and then set up the advanced  
> IMAP server hostname in $servers['advanced']['hostspec']
>
> However, if I switch Horde to authenticate using IMP, then  
> imp/backends.local.php does NOT have the authenticated username &  
> credentials, so it can't query LDAP to get the hostname.
>
> I thought I could get around this by using imp/hooks.local.php  
> preauthenticate (since it DOES have access to the un-authenticated  
> username and credentials and I was able to use that to query LDAP to  
> set $credentials['server']), BUT I have been unable to figure out  
> how to set the IMAP $servers['advanced'] array from  
> imp/hooks.local.php.
>
> So I am unable to set up the proper IMAP server when trying to  
> authenticate with IMP...
>
> Can anyone give me the answer to one of these questions when  
> authenticating Horde with IMP?
>
> 1. How can I access the unauthenticated username/password in  
> imp/backends.local.php?
>
> OR
>
> 2. How can I access the the $servers['advanced'] array in imp/hooks.local.php
>
> OR
>
> 3. Am I going about this completely wrong and there is a better way  
> to set the IMP IMAP backend hostname when authenticating with IMP?
>
> Thank you for any help.
>
> -- 
> Andy Dorman
>
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See the preauthenticate hook example in imp/config/hooks.php.dist. You  
need a separate $servers entry for each IMAP server, and can then set  
the server *name* (not the server *host*) in the hook.

-- 
Jan Schneider
The Horde Project
http://www.horde.org/
https://www.facebook.com/hordeproject