#!/usr/bin/perl -w
 
#----------------------------------------------------------------------
# copyright (C) 20102011 Firewall Services
# dani@firewall-services.com
#               
# This program 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 of the License, 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
# 
#----------------------------------------------------------------------

package esmith;

use strict;
use Errno;
use esmith::ConfigDB;
use esmith::AccountsDB;
use esmith::util;
use List::MoreUtils qw(uniq);
use Net::LDAP;
use Encode;
use Text::Unaccent::PurePerl qw(unac_string);

my $c = esmith::ConfigDB->open_ro;
my $a = esmith::AccountsDB->open_ro;

my $i = $c->get('ipasserelle');
my $ip = $i->prop('status') || 'disabled';
my $alias = $i->prop('LdapMailAlias') || 'disabled';

if (($ip eq 'disabled') || ($alias eq 'disabled')){
    exit (0);
}
    
my $l = $c->get('ldap');
my $status = $l->prop('status') || "disabled";
unless ($status eq "enabled" ){   
    warn "Not running action script $0, LDAP service not enabled!\n";
    exit(0);
}

my $hostname = $c->get('SystemName') || die("Couldn't determine system name");
$hostname = $hostname->value;

my $domain = $c->get('DomainName') || die("Couldn't determine domain name");
$domain = $domain->value;
    
my @accounts; 
my $account;
my $event = shift || die "Event name must be specified";
if ($event eq 'ldap-update' or
    $event eq 'bootstrap-ldap-save' or
    $event =~ m/(pseudonym)\-(create|modify|delete)/){
    @accounts = ($a->users,$a->groups);
    push(@accounts, $a->get('admin'));
}
else{
    my @name = @ARGV;
    die "Account name argument missing." unless scalar (@name) >= 1;

    foreach my $name (@name){
        $account = $a->get($name);
        die "Account $name not found.\n" unless defined $account;

        push @accounts, $account;
    }
}

my $base = esmith::util::ldapBase ($domain);
my $pw = esmith::util::LdapPassword();

my $ldap = Net::LDAP->new('localhost')
    or die "$@";

$ldap->bind(
    dn => "cn=root,$base",
    password => $pw
);

my $result;
foreach my $acct (@accounts){
    my $key = $acct->key;

    my @pseudo = ("$key");

    foreach my $pseudo ($a->pseudonyms){
        push (@pseudo, $pseudo->key) if ($pseudo->prop('Account') eq $key);
    }
    # Do another loop to include pseudonyms of pseudonyms
    foreach my $pseudo ($a->pseudonyms){
        push (@pseudo, $pseudo->key) if (
            grep { $_ eq $pseudo->prop('Account') } @pseudo
        );
    }

    # Include AltEmailX addresses
    foreach my $alt qw(1 2 3 4){
        push (@pseudo, $acct->prop('AltEmail' . $alt)) if (
            ($acct->prop('AltEmail' . $alt) || '') ne ''
        );
    }

    # Put PreferredMail at the top of the list
    @pseudo = ($acct->prop('PreferredEmail'), @pseudo) if (
        ($acct->prop('PreferredEmail') || '') ne ''
    );

    my @alias = ();
    foreach (@pseudo){
        $_ = $_ . "\@$domain" if $_ !~ /\@/;
        push (@alias, unac_string(decode('utf-8',$_)));
    }
    @alias = uniq(@alias);

    my $ou = 'Users';
    my $dn = 'uid';
    if ($acct->prop('type') eq 'group'){
        $ou = "Groups";
        $dn = "cn";
    }
    $result = $ldap->search(base => "ou=$ou,$base",
                            filter => "$dn=$key");
    $result->code && warn "failed to search for entry $dn=$key,ou=$ou,$base: ", $result->error;
    my @mails = ();
    foreach my $entry ($result->all_entries()){
        push @mails, $entry->get_value('mail');
    }
    my $alias = join('\0', sort @alias);
    my $mails = join('\0', sort @mails);

    unless ($alias eq $mails){ 
        $result = $ldap->modify(
                     "$dn=$key,ou=$ou,$base",
                         replace => {
                             mail => \@alias
                         }
              );
        $result->code && warn "failed to modify entry $dn=$key,ou=$ou,$base: ", $result->error;
    }
}


$ldap->unbind;