Lemonldap::NG::Portal::Simple - Base module for building Lemonldap::NG compatible portals


  use Lemonldap::NG::Portal::Simple;
  my $portal = new Lemonldap::NG::Portal::Simple(
         domain         => '',
         globalStorage  => 'Apache::Session::MySQL',
         globalStorageOptions => {
           DataSource   => 'dbi:mysql:database=dbname;host=',
           UserName     => 'db_user',
           Password     => 'db_password',
           TableName    => 'sessions',
           LockDataSource   => 'dbi:mysql:database=dbname;host=',
           LockUserName     => 'db_user',
           LockPassword     => 'db_password',
         ldapServer     => ',',
         securedCookie  => 1,
         exportedVars  => ["uid","cn","mail","appli"],

  if($portal->process()) {
    # Write here the menu with CGI methods. This page is displayed ONLY IF
    # the user was not redirected here.
    print $portal->header('text/html; charset=utf8'); # DON'T FORGET THIS (see L<CGI(3)>)
    print "...";

    # or redirect the user to the menu
    print $portal->redirect( -uri => 'https://portal/menu');
  else {
    # Write here the html form used to authenticate with CGI methods.
    # $portal->error returns the error message if athentification failed
    # Warning: by defaut, input names are "user" and "password"
    print $portal->header('text/html; charset=utf8'); # DON'T FORGET THIS (see L<CGI(3)>)
    print "...";
    print '<form method="POST">';
    # In your form, the following value is required for redirection
    print '<input type="hidden" name="url" value="'.$portal->param('url').'">';
    # Next, login and password
    print 'Login : <input name="user"><br>';
    print 'Password : <input name="password" type="password" autocomplete="off">';
    print '<input type="submit" value="go" />';
    print '</form>';


Lemonldap::NG::Portal::Simple is the base module for building Lemonldap::NG compatible portals. You can use it either by inheritance or by writing anonymous methods like in the example above.

See Lemonldap::NG::Portal::SharedConf for a complete example of use of Lemonldap::Portal::* libraries.


Constructor (new)


  • ldapServer: server(s) used to retrive session informations and to valid credentials (localhost by default). More than one server can be set here separated by commas. The servers will be tested in the specifies order. To use TLS, set "ldap+tls://server" and to use LDAPS, set "ldaps://server" instead of server name. If you use TLS, you can set any of the Net::LDAP->start_tls() sub like this: "ldap/tls://server/verify=none&capath=/etc/ssl" You can also use caFile and caPath parameters.

  • ldapPort: tcp port used by ldap server.

  • ldapBase: base of the ldap directory.

  • managerDn: dn to used to connect to ldap server. By default, anonymous bind is used.

  • managerPassword: password to used to connect to ldap server. By default, anonymous bind is used.

  • securedCookie: set it to 1 if you want to protect user cookies.

  • cookieName: name of the cookie used by Lemonldap::NG (lemon by default).

  • domain: cookie domain. You may have to give it else the SSO will work only on your server.

  • globalStorage: required: Apache::Session library to used to store session informations.

  • globalStorageOptions: parameters to bind to Apache::Session module

  • authentication: sheme to authenticate users (default: "ldap"). It can be set to:

  • caPath, caFile: if you use ldap+tls you can overwrite cafile or capath options with those parameters. This is usefull if you use a shared configuration.

  • ldapPpolicyControl: set it to 1 if you want to use LDAP Password Policy

Methods that can be overloaded

All the functions above can be overloaded to adapt Lemonldap::NG to your environment. They MUST return one of the exported constants (see above) and are called in this order by process().


If the user was redirected by a Lemonldap::NG handler, stores the url that will be used to redirect the user after authentication.


Controls if a previous session is always available. If true, it call the sub existingSession with two parameters: id and a scalar tied on Apache::Session module choosed to store sessions. See bellow


This sub is called only if a previous session exists and is available. By defaults, it returns PE_OK so user is re-authenticated. You can overload it: for example if existingSession just returns PE_DONE: authenticated users are not re-authenticated and process> returns true.


Converts form input into object variables ($self->{user} and $self->{password}).


Does nothing. To be overloaded if needed.


Creates the ldap filter using $self->{user}. By default :

  $self->{filter} = "(&(uid=" . $self->{user} . ")(objectClass=inetOrgPerson))";


Connects to LDAP server.


Binds to the LDAP server using $self->{managerDn} and $self->{managerPassword} if exist. Anonymous bind is provided else.

Retrives the LDAP entry corresponding to the user using $self->{filter}.


Prepares variables to store in central cache (stored temporarily in $self-{sessionInfo}>). It use exportedVars entry (passed to the new sub) if defined to know what to store else it stores uid, cn and mail attributes.


Does nothing by default.


Authenticates the user by rebinding to the LDAP server using the dn retrived with search() and the password.


Stores the informations collected by setSessionInfo into the central cache. The portal connects the cache using the Apache::Session module passed by the globalStorage parameters (see constructor).


Disconnects from the LDAP server.


Creates the Lemonldap::NG cookie.


Does nothing. To be overloaded if wanted.


Redirects the user to the url stored by controlUrlOrigin().

Other methods


Main method.


Returns the error message corresponding to the error returned by the methods described above

_bind( $ldap, $dn, $password )

Method used to bind to the ldap server.

Overloads the CGI::header method to add Lemonldap::NG cookie.


Overloads the CGI::redirect method to add Lemonldap::NG cookie.



  • PE_OK: all is good

  • PE_SESSIONEXPIRED: the user session has expired

  • PE_FORMEMPTY: Nothing was entered in the login form

  • PE_USERNOTFOUND: the user was not found in the (ldap) directory

  • PE_WRONGMANAGERACCOUNT: the account used to bind to LDAP server in order to find the user distinguished name (dn) was refused by the server

  • PE_BADCREDENTIALS: bad login or password

  • PE_LDAPERROR: abnormal error from ldap

  • PE_APACHESESSIONERROR: abnormal error from Apache::Session

  • PE_FIRSTACCESS: First access to the portal

  • PE_BADCERTIFICATE: Wrong certificate


Lemonldap::NG::Handler, Lemonldap::NG::Portal::SharedConf, CGI,


Xavier Guimard, <>


Use OW2 system to report bug or ask for features:


Lemonldap::NG is available at


Copyright (C) 2005-2007 by Xavier Guimard <>

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.4 or, at your option, any later version of Perl 5 you may have available.