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

[Vilius Sumskas/LNK]

Hi,

> 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.

Not necessarilly. Is your LDAP username/password the same as for IMAP? If 
yes, just set 'hordeauth' in $servers array to 'true' or 'full'. Also set 
your 'initial_app' preference in Horde preferences.
 
> 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.

-- 
   Vilius