Phonebook app for FusionPBX

No secret, that FusionPBX has it's own AddressBook named Contacts. But I actually found it too heavy for a simple app for provisioning phones. And lack of organizing.
Quick googling found this app by DigiDaz. I've been using it a while, but found way it's organized with groups a bit strange.
I redesigned it (I'd say redo around 70-80% of code) and comes up with my version of it.
So, new version of FusionPBX Phonebook app.
1. Supports Yealink, Cisco (via XML_Directory_Service), Snom. Adding new formats is quite simple.
2. More focus on security, as other apps requite auth and normally does it with API key mechanism build into FusionPBX. If you want to stay without auth, you can set variable Phonebook - Auth (text) to False in Default Settings.

For Cisco XML directory need to change default nginx profile, as Cisco does not support HTTPS unless it's Cisco singed certificates.

/etc/nginx/sites-enabled/fusionpbx
...
server {
        listen 80;
        server_name fusionpbx;
        if ($uri !~* ^.*(provision|phonebook\/directory).*$) {
                rewrite ^(.*) https://$host$1 permanent;
                break;
        }
...

Example of how to put this in template for Cisco can be found here.
For Yealink - same as described in video in original post.
For Snom - add this lines at your FusionPBX template

<!-- Phonebook Support via app -->
{if isset($snom_phonebook_url)}
{fetch file=''|cat:$snom_phonebook_url|cat:'&vendor=snom'}
{/if}

For every template use corresponding variables in Device (or Domain/Global) settings.

App itself could be found for both 4.4 and 4.2 versions of FusionPBX.