Write a custom plugin


Standard entry points

You can now write a custom portal plugin that will hook in the authentication process:

  • beforeAuth: method called before authentication process
  • betweenAuthAndData: method called after authentication and before setting “sessionInfo” provisionning
  • afterData: method called after “sessionInfo” provisionning
  • endAuth: method called when session is validated (after cookie build)
  • authCancel: method called when user click on “cancel” during auth process
  • forAuthUser: method called for already authenticated users
  • beforeLogout: method called before logout

Extended entry points

If you need to call a method just after any standard method in authentication process, then use afterSub, for example:

use constant afterSub => {
    getUser => 'mysub',
sub mysub {
    my ( $self ,$req ) = @_;
    # Do something
    return PE_OK;

If you need to call a method instead any standard method in authentication process, then use aroundSub, for example:

use constant aroundSub => {
    getUser => 'mysub',
sub mysub {
    my ( $self, $sub, $req ) = @_;
    # Do something before
    my $ret = $sub->($req);
    # Do something after
    return $ret;


New in version 2.0.10.

Your plugin can also register itself to be called at some points of interest within the main LemonLDAP::NG code.


The plugin can also define new routes and call actions on them.

See also Lemonldap::NG::Portal::Main::Plugin man page.


Plugin Perl module

Create for example the MyPlugin module:

vi /usr/share/perl5/Lemonldap/NG/Portal/MyPlugin.pm


If you do not want to mix files from the distribution with your own work, put your own code in /usr/local/lib/site_perl/Lemonldap/NG/Portal/MyPlugin.pm

package Lemonldap::NG::Portal::MyPlugin;

use Mouse;
use Lemonldap::NG::Portal::Main::Constants;
extends 'Lemonldap::NG::Portal::Main::Plugin';

use constant beforeAuth => 'verifyIP';

sub init {
          my ($self) = @_;
          $self->addUnauthRoute( mypath => 'hello', [ 'GET', 'PUT' ] );
          $self->addAuthRoute( mypath => 'welcome', [ 'GET', 'PUT' ] );
          return 1;
sub verifyIP {
          my ($self, $req) = @_;
          return PE_ERROR if($req->address !~ /^10/);
          return PE_OK;
sub hello {
          my ($self, $req) = @_;
          return $self->p->sendJSONresponse($req, { hello => 1 });
sub welcome {
          my ($self, $req) = @_;

          my $userid = $req->user;
          $self->p->logger->debug("Call welcome for $userid");

          return $self->p->sendHtml($req, 'template', params => { WELCOME => 1 });


Declare the plugin in lemonldap-ng.ini:

vi /etc/lemonldap-ng/lemonldap-ng.ini
customPlugins = Lemonldap::NG::Portal::MyPlugin
;customPlugins = Lemonldap::NG::Portal::MyPlugin1, Lemonldap::NG::Portal::MyPlugin2, ...

Since 2.0.7, it can also be configured in Manager, in General Parameters > Plugins > Custom Plugins.