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


  use Lemonldap::NG::Portal::Simple;
  my $portal = new Lemonldap::NG::Portal::Simple(
         domain         => 'example.com',
         globalStorage  => 'Apache::Session::MySQL',
         globalStorageOptions => {
           DataSource   => 'dbi:mysql:database=dbname;host=',
           UserName     => 'db_user',
           Password     => 'db_password',
           TableName    => 'sessions',
           LockDataSource   => 'dbi:mysql:database=dbname;host=',
           LockUserName     => 'db_user',
           LockPassword     => 'db_password',
         ldapServer     => 'ldap.domaine.com,ldap-backup.domaine.com',
         securedCookie  => 1,
         exportedVars  => {
           uid   => 'uid',
           cn    => 'cn',
           mail  => 'mail',
           appli => 'appli',
         # Activate SOAP service
         Soap           => 1
  if($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=utf-8'); # 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 $portal->header('text/html; charset=utf-8'); # DON'T FORGET THIS (see L<CGI(3)>)
    print "...";
    print '<form method="POST">';
    # In your form, the following value is required for redirection
    print '<input type="hidden" name="url" value="'.$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>';

SOAP mode authentication (client) :

  #!/usr/bin/perl -l
  use SOAP::Lite;
  use Data::Dumper;
  my $soap =
  my $r = $soap->getCookies( 'user', 'password' );
  # Catch SOAP errors
  if ( $r->fault ) {
      print STDERR "SOAP Error: " . $r->fault->{faultstring};
  else {
      my $res = $r->result();
      # If authentication failed, display error
      if ( $res->{error} ) {
          print STDERR "Error: " . $soap->error( $res->{error} )->result();
      # print session-ID
      else {
          print "Cookie: lemonldap=" . $res->{cookies}->{lemonldap};


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 information 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 information.

  • 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 useful if you use a shared configuration.

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

  • grantSessionRule: rule applied to grant session opening for a user. Can use all exported attributes, macros, groups and custom functions.

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 below


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.


Method implemented into Lemonldap::NG::Portal::Auth* modules. By default (ldap bind), 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))";

If $self->{AuthLDAPFilter} is set, it is used instead of this. This is used by Lemonldap::NG::Portal::Auth* modules to overload filter.


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}.


Same as setSessionInfo but implemented in Lemonldap::NG::Portal::Auth* modules.


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.


Pick up an information stored in session.


Does nothing by default.


Method implemented in Lemonldap::NG::Portal::Auth* modules. By default (ldap), authenticates the user by rebinding to the LDAP server using the dn retrived with search() and the password.


Use grantSessionRule parameter to allow session opening.


Stores information 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


Give the type of the error (positive, warning or positive)

_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

  • PE_PP_ACCOUNT_LOCKED: account locked

  • PE_PP_PASSWORD_EXPIRED: password axpired

  • PE_CERTIFICATEREQUIRED: certificate required

  • PE_ERROR: unclassified error


Lemonldap::NG::Handler, Lemonldap::NG::Portal::SharedConf, CGI, http://lemonldap-ng.org/


Clement Oudot, <clem.oudot@gmail.com>
François-Xavier Deltombe, <fxdeltombe@gmail.com.>
Xavier Guimard, <x.guimard@free.fr>
Sandro Cazzaniga, <cazzaniga.sandro@gmail.com>
Thomas Chemineau, <thomas.chemineau@gmail.com>


Use OW2 system to report bug or ask for features: http://jira.ow2.org


Lemonldap::NG is available at http://forge.objectweb.org/project/showfiles.php?group_id=274


This library is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.