Add SASL as a userPassword attribute modifier

[braiam]

When using LDAP with Kerberos as authentication backend, one can use saslauthd to serve as the in-between. I've seen https://github.com/leenooks/phpLDAPadmin/pull/92 and https://github.com/leenooks/phpLDAPadmin/pull/93 but those deal with PLA-ldap server communication.

The exact entry that I want to use is:

userPassword: {SASL}[email protected]

Which is not possible with current options.

[AllenRDCo]

I found this request and took a quick look at the code since we wanted the same thing. This is what I came up with as a quick and dirty fix:

lib/functions.php:

$ diff original/lib/functions.php modified/lib/functions.php 
2170a2171
>               'sasl'=>'sasl',
2298c2299
<               default:
---
> 
2299a2301,2306
> 
>                       break;
> 
>               case 'sasl':
>               default:
>                       $new_value = sprintf('{SASL}%s',$password_clear);

config/config.php:

$ diff original/config/config.php modified/config/config.php
185a186,189
> // show clear/sasl passwords
> $config->custom->appearance['obfuscate_password_display'] = false;
> $config->custom->appearance['show_clear_password'] = true;

Testing it shows it to be working as expected and no issues that I can find with the code adjustments, though we're not using LDAP to store passwords at all and instead are using Kerberos for that. Hope this helps.