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# --
# Kernel/System/CustomerAuth/LDAP.pm - provides the ldap authentification
# Copyright (C) 2001-2004 Martin Edenhofer <martin+code@otrs.org>
# --
# $Id: LDAP.pm,v 1.9 2004/11/04 11:00:16 martin Exp $
# --
# This software comes with ABSOLUTELY NO WARRANTY. For details, see
# the enclosed file COPYING for license information (GPL). If you
# did not receive this file, see http://www.gnu.org/licenses/gpl.txt.
# --
# Note:
# available objects are: ConfigObject, LogObject and DBObject
# --
package Kernel::System::CustomerAuth::LDAP;
use strict;
use Net::LDAP;
use vars qw($VERSION);
$VERSION = '$Revision: 1.9 $';
$VERSION =~ s/^\$.*:\W(.*)\W.+?$/$1/;
# --
sub new {
my $Type = shift;
my %Param = @_;
# allocate new hash for object
my $Self = {};
bless ($Self, $Type);
# check needed objects
foreach (qw(LogObject ConfigObject DBObject)) {
$Self->{$_} = $Param{$_} || die "No $_!";
}
# Debug 0=off 1=on
$Self->{Debug} = 0;
# get ldap preferences
$Self->{Host} = $Self->{ConfigObject}->Get('Customer::AuthModule::LDAP::Host')
|| die "Need Customer::AuthModule::LDAPHost in Kernel/Config.pm";
$Self->{BaseDN} = $Self->{ConfigObject}->Get('Customer::AuthModule::LDAP::BaseDN')
|| die "Need Customer::AuthModule::LDAPBaseDN in Kernel/Config.pm";
$Self->{UID} = $Self->{ConfigObject}->Get('Customer::AuthModule::LDAP::UID')
|| die "Need Customer::AuthModule::LDAPBaseDN in Kernel/Config.pm";
$Self->{SearchUserDN} = $Self->{ConfigObject}->Get('Customer::AuthModule::LDAP::SearchUserDN') || '';
$Self->{SearchUserPw} = $Self->{ConfigObject}->Get('Customer::AuthModule::LDAP::SearchUserPw') || '';
$Self->{GroupDN} = $Self->{ConfigObject}->Get('Customer::AuthModule::LDAP::GroupDN') || '';
$Self->{AccessAttr} = $Self->{ConfigObject}->Get('Customer::AuthModule::LDAP::AccessAttr') || '';
$Self->{UserAttr} = $Self->{ConfigObject}->Get('Customer::AuthModule::LDAP::UserAttr') || 'DN';
$Self->{UserSuffix} = $Self->{ConfigObject}->Get('Customer::AuthModule::LDAP::UserSuffix') || '';
# ldap filter always used
$Self->{AlwaysFilter} = $Self->{ConfigObject}->Get('Customer::AuthModule::LDAP::AlwaysFilter') || '';
# Net::LDAP new params
if ($Self->{ConfigObject}->Get('Customer::AuthModule::LDAP::Params')) {
$Self->{Params} = $Self->{ConfigObject}->Get('Customer::AuthModule::LDAP::Params');
}
else {
$Self->{Params} = {};
}
return $Self;
}
# --
sub GetOption {
my $Self = shift;
my %Param = @_;
# check needed stuff
if (!$Param{What}) {
$Self->{LogObject}->Log(Priority => 'error', Message => "Need What!");
return;
}
# module options
my %Option = (
PreAuth => 0,
);
# return option
return $Option{$Param{What}};
}
# --
sub Auth {
my $Self = shift;
my %Param = @_;
# check needed stuff
foreach (qw(User Pw)) {
if (!$Param{$_}) {
$Self->{LogObject}->Log(Priority => 'error', Message => "Need $_!");
return;
}
}
# get params
my $RemoteAddr = $ENV{REMOTE_ADDR} || 'Got no REMOTE_ADDR env!';
# add user suffix
if ($Self->{UserSuffix}) {
$Param{User} .= $Self->{UserSuffix};
# just in case for debug
if ($Self->{Debug} > 0) {
$Self->{LogObject}->Log(
Priority => 'notice',
Message => "CustomerUser: ($Param{User}) added $Self->{UserSuffix} to username!",
);
}
}
# just in case for debug!
if ($Self->{Debug} > 0) {
$Self->{LogObject}->Log(
Priority => 'notice',
Message => "CustomerUser: '$Param{User}' tried to authentificate with Pw: '$Param{Pw}' (REMOTE_ADDR: $RemoteAddr)",
);
}
# ldap connect and bind (maybe with SearchUserDN and SearchUserPw)
my $LDAP = Net::LDAP->new($Self->{Host}, %{$Self->{Params}}) or die "$@";
if (!$LDAP->bind(dn => $Self->{SearchUserDN}, password => $Self->{SearchUserPw})) {
$Self->{LogObject}->Log(
Priority => 'error',
Message => "First bind failed!",
);
return;
}
# build filter
my $Filter = "($Self->{UID}=$Param{User})";
# prepare filter
if ($Self->{AlwaysFilter}) {
$Filter = "(&$Filter$Self->{AlwaysFilter})";
}
# perform user search
my $Result = $LDAP->search (
base => $Self->{BaseDN},
filter => $Filter,
);
# get whole user dn
my $UserDN = '';
foreach my $Entry ($Result->all_entries) {
$UserDN = $Entry->dn();
}
# log if there is no LDAP user entry
if (!$UserDN) {
# failed login note
$Self->{LogObject}->Log(
Priority => 'notice',
Message => "CustomerUser: $Param{User} authentification failed, no LDAP entry found!".
"BaseDN='$Self->{BaseDN}', Filter='$Filter', (REMOTE_ADDR: $RemoteAddr).",
);
# take down session
$LDAP->unbind;
return;
}
# check if user need to be in a group!
if ($Self->{AccessAttr} && $Self->{GroupDN}) {
# just in case for debug
if ($Self->{Debug} > 0) {
$Self->{LogObject}->Log(
Priority => 'notice',
Message => "check for groupdn!",
);
}
# search if we're allowed to
my $Filter2 = '';
if ($Self->{UserAttr} eq 'DN') {
$Filter2 = "($Self->{AccessAttr}=$UserDN)";
}
else {
$Filter2 = "($Self->{AccessAttr}=$Param{User})";
}
my $Result2 = $LDAP->search (
base => $Self->{GroupDN},
filter => $Filter2
);
# extract it
my $GroupDN = '';
foreach my $Entry ($Result2->all_entries) {
$GroupDN = $Entry->dn();
}
# log if there is no LDAP entry
if (!$GroupDN) {
# failed login note
$Self->{LogObject}->Log(
Priority => 'notice',
Message => "CustomerUser: $Param{User} authentification failed, no LDAP group entry found".
"GroupDN='$Self->{GroupDN}', Filter='$Filter2'! (REMOTE_ADDR: $RemoteAddr).",
);
# take down session
$LDAP->unbind;
return;
}
}
# bind with user data -> real user auth.
$Result = $LDAP->bind(dn => $UserDN, password => $Param{Pw});
if ($Result->code) {
# failed login note
$Self->{LogObject}->Log(
Priority => 'notice',
Message => "CustomerUser: $Param{User} authentification failed: '".$Result->error."' (REMOTE_ADDR: $RemoteAddr).",
);
# take down session
$LDAP->unbind;
return;
}
else {
# login note
$Self->{LogObject}->Log(
Priority => 'notice',
Message => "CustomerUser: $Param{User} authentification ok (REMOTE_ADDR: $RemoteAddr).",
);
# take down session
$LDAP->unbind;
return $Param{User};
}
}
# --
1;
|
