2008-12-31 16:10:02 +01:00
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## @file
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# Alias for Lemonldap::NG::SharedConf
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## @class
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# Alias for Lemonldap::NG::SharedConf
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2006-12-18 12:32:33 +01:00
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package Lemonldap::NG::Portal;
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2012-06-20 09:54:00 +02:00
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our $VERSION = '1.3.0';
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2008-12-31 16:10:02 +01:00
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use Lemonldap::NG::Portal::SharedConf;
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use base 'Lemonldap::NG::Portal::SharedConf';
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2006-12-18 12:32:33 +01:00
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1;
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__END__
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=pod
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2010-01-03 09:09:59 +01:00
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=encoding utf8
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2006-12-18 12:32:33 +01:00
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=head1 NAME
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Lemonldap::NG::Portal - The authentication portal part of Lemonldap::NG Web-SSO
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system.
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=head1 SYNOPSIS
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2006-12-24 09:37:27 +01:00
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use Lemonldap::NG::Portal::SharedConf;
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my $portal = new Lemonldap::NG::Portal::SharedConf (
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2008-12-07 21:07:52 +01:00
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configStorage => {
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2007-01-14 20:39:07 +01:00
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type => 'DBI',
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2006-12-24 09:37:27 +01:00
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dbiChain => "dbi:mysql:database=lmSessions;host=1.2.3.4",
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dbiUser => "lemon",
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dbiPassword => "pass",
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2008-12-07 21:07:52 +01:00
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},
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# Activate SOAP service
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Soap => 1
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2006-12-18 12:32:33 +01:00
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);
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if($portal->process()) {
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# Write here the menu with CGI methods. This page is displayed ONLY IF
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# the user was not redirected here by a Lemonldap::NG::Handler,
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# else, the process sub redirect the user to the initial requested URI.
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2008-06-06 05:51:39 +02:00
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print $portal->header('text/html; charset=utf8'); # DON'T FORGET THIS (see L<CGI(3)>)
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2006-12-18 12:32:33 +01:00
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print "...";
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# or redirect the user to the menu
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print $portal->redirect( -uri => 'https://portal/menu');
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2007-03-24 16:18:52 +01:00
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# You can also add a "Logout" link:
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print "<a href=\"$ENV{SCRIPT_NAME}?logout=1\">";
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2006-12-18 12:32:33 +01:00
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}
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else {
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# Write here the html form used to authenticate with CGI methods.
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2010-01-03 09:09:59 +01:00
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# $portal->error returns the error message if authentication failed
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2008-06-11 08:00:26 +02:00
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# You can force the language in error like this :
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# print $portal->error('fr')
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2006-12-18 12:32:33 +01:00
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# Warning: by defaut, input names are "user" and "password"
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2008-06-06 05:51:39 +02:00
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print $portal->header('text/html; charset=utf8'); # DON'T FORGET THIS (see L<CGI(3)>)
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2006-12-18 12:32:33 +01:00
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print "<html> ...";
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print '<form method="POST">';
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# In your form, the following value is required for redirection
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print '<input type="hidden" name="url" value="'.$portal->param('url').'">';
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# Next, login and password
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print 'Login : <input name="user"><br>';
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print 'Password : <input name="password" type="password" autocomplete="off"><br>';
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print '<input type=submit value="OK">';
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print '</form>';
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}
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2008-12-07 21:07:52 +01:00
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SOAP mode authentication (client) :
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#!/usr/bin/perl -l
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use SOAP::Lite;
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use Data::Dumper;
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my $soap =
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SOAP::Lite->proxy('http://auth.example.com/')
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2009-02-08 20:12:08 +01:00
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->uri('urn:/Lemonldap::NG::Common::CGI::SOAPService');
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2008-12-07 21:07:52 +01:00
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my $r = $soap->getCookies( 'user', 'password' );
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# Catch SOAP errors
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if ( $r->fault ) {
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print STDERR "SOAP Error: " . $r->fault->{faultstring};
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}
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else {
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my $res = $r->result();
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# If authentication failed, display error
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if ( $res->{error} ) {
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print STDERR "Error: " . $soap->error( 'fr', $res->{error} )->result();
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}
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# print session-ID
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else {
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print "Cookie: lemonldap=" . $res->{cookies}->{lemonldap};
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}
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}
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2006-12-18 12:32:33 +01:00
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=head1 DESCRIPTION
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Lemonldap::NG is a modular Web-SSO based on Apache::Session modules. It
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simplifies the build of a protected area with a few changes in the application.
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It manages both authentication and authorization and provides headers for
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accounting. So you can have a full AAA protection for your web space as
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described below.
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The portal part inherits from L<CGI> so yo can use it both with Apache 1 and 2
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and use all L<CGI> features.
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=head2 Authentication, Autorization, Accounting
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=head3 B<Authentication>
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2010-01-03 09:09:59 +01:00
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If a user isn't authenticated and attempts to connect to an area protected by a
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2006-12-18 12:32:33 +01:00
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Lemonldap::NG compatible handler, he is redirected to a portal. The portal
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authenticates user with a ldap bind by default, but you can also use another
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authentication sheme like using x509 user certificates (see
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L<Lemonldap::NG::Portal::AuthSSL> for more).
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2007-05-05 16:13:44 +02:00
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Lemonldap::NG use session cookies generated by L<Apache::Session> so as secure as a
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2006-12-18 12:32:33 +01:00
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128-bit random cookie. You may use the C<securedCookie> options of
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2008-06-11 08:00:26 +02:00
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L<Lemonldap::NG::Portal> to avoid session hijacking if all your protected sites
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use https.
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2006-12-18 12:32:33 +01:00
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2007-05-05 16:13:44 +02:00
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You have to manage life of sessions by yourself since Lemonldap::NG knows nothing
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2006-12-18 12:32:33 +01:00
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about the L<Apache::Session> module you've choosed, but it's very easy using a
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simple cron script because L<Lemonldap::NG::Portal> stores the start time in the
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C<_utime> field.
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2008-06-11 08:00:26 +02:00
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The purgeCentralCache provided in C<example/> directory can help you to do it.
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2006-12-18 12:32:33 +01:00
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By default, a session stay 10 minutes in the Handler local storage, so in the
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worth case, a user is authorized 10 minutes after he lost his rights.
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=head3 B<Authorization>
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Authorization is controled only by handlers because the portal knows nothing
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about the way the user will choose. When configuring your Web-SSO, you have to:
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=over
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=item * choose the ldap attributes you want to use to manage accounting and
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authorization (see C<exportedHeaders> parameter in L<Lemonldap::NG::Portal>
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documentation),
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=item * create Perl expression to define user groups (using ldap attributes):
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2010-01-03 09:09:59 +01:00
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optional, this mechanism is available with Lemonldap::NG::*::SharedConf
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2006-12-18 12:32:33 +01:00
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modules,
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=item * create an array foreach virtual host associating URI regular
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expressions and Perl expressions to use to grant access.
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=back
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=head4 Example
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Exported variables (in Lemonldap::NG::Portal, will be stored in
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configuration database):
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exportedVars => {
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cn => "cn",
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departmentUID => "departmentUID",
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login => "uid",
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},
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User groups (stored in configuration database with L<Lemonldap::NG::Manager>):
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groups => {
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group1 => '{ $departmentUID eq "unit1" or $login = "xavier.guimard" }',
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...
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},
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Area protection (stored in configuration database with
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L<Lemonldap::NG::Manager>):
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locationRules => {
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www1.domain.com => {
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'^/protected/.*$' => '$groups =~ /\bgroup1\b/',
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default => 'accept',
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},
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www2.domain.com => {
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'^/site/.*$' => '$uid eq "xavier.guimard" or $groups =~ /\bgroup2\b/',
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'^/(js|css)' => 'accept',
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default => 'deny',
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},
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},
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=head4 Performance
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You can use Perl expressions as complicated as you want and you can use all
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the exported LDAP attributes (and create your own attributes: see examples in
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L<Lemonldap::NG::Portal> distribution) both in groups evaluations and area
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protections (you just have to call them with a "$").
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You have to be careful when choosing your expressions:
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=over
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=item * C<groups> are evaluated each time a user is redirected to the portal,
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=item * C<locationRules> are evaluated for each request.
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=back
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2010-01-03 09:09:59 +01:00
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It is also recommended to use the C<groups> mechanism to avoid having to
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2006-12-18 12:32:33 +01:00
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evaluate a long expression at each HTTP request:
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locationRules => {
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www1.domain.com => {
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'^/protected/.*$' => '$groups =~ /\bgroup1\b/',
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},
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},
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You can also use ldap filters in C<groups> parameter, or Perl expression or
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mixed expressions. Perl expressions has to be enclosed with C<{}>:
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=over
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=item * C<group1 =E<gt> '(|(uid=xavier.guimard)(ou=unit1))'>
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=item * C<group1 =E<gt> '{$uid eq "xavier.guimard" or $ou eq "unit1"}'>
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=item * C<group1 =E<gt> '(|(uid=xavier.guimard){$ou eq "unit1"})'>
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=back
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2010-01-03 09:09:59 +01:00
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It is also recommended to use Perl expressions to avoid requiering the LDAP
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2006-12-18 12:32:33 +01:00
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server more than 2 times per authentication.
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=head3 B<Accounting>
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=head4 I<Logging portal access>
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L<Lemonldap::NG::Portal> doesn't log anything by default, but it's easy to overload
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C<log> method for normal portal access or using C<error> method to know what
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was wrong if C<process> method has failed.
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=head4 I<Logging application access>
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Because an handler knows nothing about the protected application, it can't do
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more than logging URL. As Apache does this fine, L<Lemonldap::NG::Handler> gives it
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the name to used in logs. The C<whatToTrace> parameters indicates which
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variable Apache has to use (C<$uid> by default).
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The real accounting has to be done by the application itself which knows the
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result of SQL transaction for example.
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2007-05-05 16:13:44 +02:00
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Lemonldap::NG can export http headers either using a proxy or protecting directly
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2006-12-18 12:32:33 +01:00
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the application. By default, the C<User-Auth> field is used but you can change
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it using the C<exportedHeaders> parameters (stored in the configuration
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database). This parameters contains an associative array:
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=over
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2010-01-03 09:09:59 +01:00
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=item * B<keys> are the names of the chosen headers
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2006-12-18 12:32:33 +01:00
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=item * B<values> are perl expressions where you can use user datas stored in
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the global store by calling them C<$E<lt>varnameE<gt>>.
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=back
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Example:
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exportedHeaders => {
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www1.domain.com => {
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'Auth-User' => '$uid',
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'Unit' => '$ou',
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},
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www2.domain.com => {
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'Authorization' => '"Basic ".encode_base64($employeeNumber.":dummy")',
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},
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}
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=head2 Storage systems
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Lemonldap::NG use 3 levels of cache for authenticated users:
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=over
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=item * an Apache::Session::* module choosed with the C<globalStorage>
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parameter (completed with C<globalglobalStorageOptions>) and used by
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L<lemonldap::NG::Portal> to store authenticated user parameters,
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=item * a L<Cache::Cache> module choosed with the C<localStorage> parameter
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(completed with C<localStorageOptions> and used to share authenticated users
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between Apache's threads or processus and of course between virtual hosts,
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=item * Lemonldap::NG variables: if the same user use the same thread or
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processus a second time, no request are needed to grant or refuse access. This
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is very efficient with HTTP/1.1 Keep-Alive system.
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=back
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So the number of request to the central storage is limited to 1 per user each
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10 minutes.
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Lemonldap::NG is very fast, but you can increase performance using a
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L<Cache::Cache> module that does not use disk access.
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2007-03-24 16:18:52 +01:00
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=head2 Logout system
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Lemonldap::NG provides a single logout system: you can use it by adding a link
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to the portal with "logout=1" parameter (See Synopsis) and/or by configuring
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2007-07-22 22:30:27 +02:00
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Handler to intercept some URL directly in the manager interface and/or in
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Apache configuration file (See L<Lemonldap::NG::Handler>). The logout system:
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2007-03-24 16:18:52 +01:00
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=over
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=item * delete session in the global session storage,
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=item * replace Lemonldap::NG cookie by '',
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=item * delete handler caches only if logout action was started from a
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protected application and only in the current Apache server. So in other
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servers, session is still in cache for 10 minutes maximum if the user was
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connected on it in the last 10 minutes.
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=back
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2008-05-11 11:18:08 +02:00
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=head2 Existing sessions
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By default, when a user tries to connect to the portal with a valid cookie,
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the portal proposes a new authentication. This behaviour can be change easily
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by changing C<existingSession> sub :
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use Lemonldap::NG::Portal::SharedConf qw(:all);
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my $portal = Lemonldap::NG::Portal::SharedConf->new ( {
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existingSession => sub {PE_DONE},
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configStorage => ...
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...
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});
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2008-06-11 08:00:26 +02:00
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=head1 PORTAL OPTIONS
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=head2 Manager options
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All options here can be set both in the manager interface and in the
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constructor ($portal->new()). Local arguments have the precedence on
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arguments set by the manager.
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=over
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=item * ldapPort: tcp port used by ldap server.
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=item * ldapBase: base of the ldap directory.
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=item * managerDn: dn to used to connect to ldap server. By default, anonymous
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bind is used.
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=item * managerPassword: password to used to connect to ldap server. By
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default, anonymous bind is used.
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=item * securedCookie : set it to 1 if you want to protect user cookies.
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=item * cookieName : name of the cookie used by Lemonldap::NG (lemonldap by
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default).
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=item * domain : cookie domain. You may have to give it else the SSO will work
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only on your server.
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=item * globalStorage : required: L<Apache::Session> library to used to store
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2010-06-08 12:39:34 +02:00
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session information.
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2008-06-11 08:00:26 +02:00
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=item * globalStorageOptions : parameters to bind to L<Apache::Session> module
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=item * locationRules : this parameter is used by L<Lemonldap::NG::Handler> to
|
2012-08-09 19:13:51 +02:00
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read the rules.
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2008-06-11 08:00:26 +02:00
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=item * authentication: sheme to authenticate users (default: "ldap"). It can
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be set to:
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=over
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2010-01-03 09:09:59 +01:00
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=item * ldap : authentication is done by LDAP bind
|
2008-06-11 08:00:26 +02:00
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=item * SSL : the portal reads SSL variables issued from Apache SSL
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authentication. See L<Lemonldap::NG::Portal::AuthSSL> for more.
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=item * CAS : use CAS system to authenticate users. See
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L<Lemonldap::NG::Portal::AuthCAS> for more.
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=item * Apache : the authentication is done by Apache configuration and the
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portal reads the environment variable C<REMOTE_USER> to search the user in
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the LDAP server. This can be used to authenticate users by Kerberos.
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=item * LA : Liberty-Alliance mechanism. WARNING : at the moment, you have to
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use directly L<Lemonldap::NG::Portal::AuthLA> because this target does not
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work.
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=back
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=back
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=head2 Local options
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Those options can not be set using the manager but have to be passed to the
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constructor (new()).
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=over
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|
=item * configStorage I<(required for Lemonldap::NG::Portal::SharedConf)> :
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describe how to find configuration generated by L<Lemonldap::NG::Manager>. See
|
2008-11-17 17:59:56 +01:00
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L<Lemonldap::NG::Common::Conf> for more
|
2008-06-11 08:00:26 +02:00
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=item * caPath, caFile : if you use ldap+tls you can overwrite cafile or capath
|
2010-01-03 09:09:59 +01:00
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|
options with those parameters. This is useful if you use a shared
|
2008-06-11 08:00:26 +02:00
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configuration.
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=item * ldapPpolicyControl : set it to 1 if you want to use LDAP Password
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Policy
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|
=item * ldapGroupBase : this parameter can be used to store in the Lemonldap::NG
|
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|
|
groups system all the LDAP groups that contains the user. Set here the LDAP base
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of the LDAP groups. Example : C<"dmdName=groups,dc=example,dc=com">.
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|
=item * I<methodName> : all method used by the process sub can be overloaded
|
|
|
|
simply using an option that referenced a sub. See
|
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|
|
L<Lemonldap::NG::Portal::Simple> for more.
|
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|
|
|
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|
=back
|
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|
|
CAS authentication options :
|
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|
|
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|
|
=over
|
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|
=item * CAS_url, CAS_CAFile, CAS_loginUrl, CAS_validationUrl : see
|
|
|
|
L<Lemonldap::NG::Portal::AuthCAS> for more
|
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|
=back
|
|
|
|
|
|
|
|
Liberty-Alliance authentication options :
|
|
|
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|
=over
|
|
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|
|
=item * laSp, laIdpsFile, laStorage, laLdapLoginAttribute, localStorage,
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|
|
|
localStorageOptions, laDebug : see L<Lemonldap::NG::Portal::AuthLA> for more.
|
|
|
|
|
|
|
|
=back
|
|
|
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|
|
SSL authentication options :
|
|
|
|
|
|
|
|
=over
|
|
|
|
|
|
|
|
=item * SSLVar : the name of the SSL variable to read. Default to
|
|
|
|
SSL_CLIENT_S_DN_Email.
|
|
|
|
|
|
|
|
=back
|
|
|
|
|
2006-12-18 12:32:33 +01:00
|
|
|
=head1 USING LEMONLDAP::NG::PORTAL FOR DEVELOPMENT
|
|
|
|
|
|
|
|
Lemonldap::NG::Portal provides different modules:
|
|
|
|
|
|
|
|
=over
|
|
|
|
|
|
|
|
=item * L<Lemonldap::NG::Portal::Simple>: base module to build a portal,
|
|
|
|
|
2008-06-11 08:00:26 +02:00
|
|
|
=item * L<Lemonldap::NG::Portal::Auth*>: authentication modules that modify
|
|
|
|
authentication scheme.
|
|
|
|
|
|
|
|
=item * L<Lemonldap::NG::Portal::AuthLA>: specific module to used
|
|
|
|
Liberty-Alliance mechanisms to authenticate users
|
2006-12-18 12:32:33 +01:00
|
|
|
|
|
|
|
=item * L<Lemonldap::NG::Portal::SharedConf>: this module provide the ability
|
|
|
|
to read portal configuration from a central database. It inherits from
|
2006-12-24 09:37:27 +01:00
|
|
|
L<Lemonldap::NG::Portal::Simple>. It's the more used module.
|
2006-12-18 12:32:33 +01:00
|
|
|
|
|
|
|
=back
|
|
|
|
|
|
|
|
=head1 SEE ALSO
|
|
|
|
|
2007-02-11 09:31:56 +01:00
|
|
|
L<Lemonldap::NG::Portal::SharedConf>, L<Lemonldap::NG::Portal::Simple>
|
2007-04-02 21:13:05 +02:00
|
|
|
L<Lemonldap::NG::Handler>, L<Lemonldap::NG::Manager>,
|
2010-10-26 08:08:16 +02:00
|
|
|
L<http://lemonldap-ng.org/>
|
2006-12-18 12:32:33 +01:00
|
|
|
|
|
|
|
=head1 AUTHOR
|
|
|
|
|
|
|
|
Xavier Guimard, E<lt>x.guimard@free.frE<gt>
|
|
|
|
|
2007-04-14 15:12:11 +02:00
|
|
|
=head1 BUG REPORT
|
|
|
|
|
|
|
|
Use OW2 system to report bug or ask for features:
|
2010-10-26 08:08:16 +02:00
|
|
|
L<http://jira.ow2.org>
|
2007-04-14 15:12:11 +02:00
|
|
|
|
|
|
|
=head1 DOWNLOAD
|
|
|
|
|
|
|
|
Lemonldap::NG is available at
|
|
|
|
L<http://forge.objectweb.org/project/showfiles.php?group_id=274>
|
|
|
|
|
2006-12-18 12:32:33 +01:00
|
|
|
=head1 COPYRIGHT AND LICENSE
|
|
|
|
|
2010-10-23 10:35:38 +02:00
|
|
|
Copyright (C) 2005, 2007, 2010 by Xavier Guimard E<lt>x.guimard@free.frE<gt>
|
2006-12-18 12:32:33 +01:00
|
|
|
|
|
|
|
This library is free software; you can redistribute it and/or modify
|
2010-10-24 09:25:44 +02:00
|
|
|
it under the same terms as Perl itself, either Perl version 5.10.0 or,
|
2006-12-18 12:32:33 +01:00
|
|
|
at your option, any later version of Perl 5 you may have available.
|
|
|
|
|
|
|
|
=cut
|