Hello Monks,

I have a working script which is used to authenticate users for vpn using ldap for openvpn. The way script called is, in openvpn conf file ( /etc/openvpn/server.conf )
auth-user-pass-verify /etc/openvpn/ldap_authenticate.pl via-env

The script is as follows,
 cat ldap_authenticate.pl

#!/usr/bin/perl -w
use Net::LDAP;
use strict;

my $ldap;
my $result;

my $opt_uri = "ldap://localhost";
my $opt_user = $ENV{'username'};
my $opt_passwd = $ENV{'password'};
my $opt_common = $ENV{'common_name'};
my $opt_group = "cn=vpnusers,ou=Groups,dc=mycompany,dc=com";
my $opt_binddn = "uid=".$opt_user.",ou=People,dc=mycompany,dc=com";
$ldap = Net::LDAP->new($opt_uri) or die("connect $opt_uri failed!");

$result = $ldap->bind($opt_binddn, password=>$opt_passwd);
$result->code and $result = $ldap->bind("uid=".$opt_user.",ou=Interns,
+dc=mycompany,dc=com", password=>$opt_passwd);
$result->code and die($result->error);
$result = $ldap->search(base=>$opt_group, filter=>"(&(memberUid=$opt_u
+ser))");
$result->code();
if ($result->count == 1) { exit 0; }
unless($result->count){ exit 1; }

[download]
It works perfectly fine for users who are from
ou=People

1). Just wondering how $ENV{'username'} and $ENV{'password'} work? I mean, considering if i call this script on command line by changing them to ask from user i.e <STDIN>, it says
Invalid credentials
and when i printed "$result" using Dumper, i can see that resultCode is 49. - How to enter manually , without using $ENV?

2). If i want to authenticate another CN ( in addition to CN=People, say CN=testuserforvpn, how can i do that?

Any pointers are greatly helpful.

Thanks

In reply to Pointers required on understanding LDAP Authenticating script for openvpn by shekarkcb

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