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#!/usr/bin/perl
# DHCP Conf Parser
# Copyright (C) 2002 MandrakeSoft Arnaud Desmons <adesmons@mandrakesoft.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, 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 Dhcpconf;
require "__WIZ_HOME__/common/scripts/IFCFG.pm";
#require "__WIZ_HOME__/common/scripts/DrakconnectConf.pm";
use MDK::Common;
use strict;
use standalone;
my $o = IFCFG->new();
my $wiz_ip_server = $o->itf_get("IPADDR");
my $d = "$4" if $wiz_ip_server =~ /(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/;
my $s = "$1.$2.$3" if $wiz_ip_server =~ /(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/;
sub compute_range {
my $n;
if ($d <= 64) { $n = "65" }
elsif ($d <= 128) { $n = "129" }
else { $n = "1"}
"$s.$n";
}
sub compute_range2 {
my $n;
if ($d <= 128) { $n = "254" }
elsif ($d > 192) { $n = "192" }
else { $n = "128"}
"$s.$n";
}
sub check {
# FIXME : see check_range.sh
my $r1_trunc = "$1.$2.$3" if $ENV{wiz_ip_range1} =~ /(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/;
my $r2_trunc = "$1.$2.$3" if $ENV{wiz_ip_range2} =~ /(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/;
my $d1 = "$4" if $ENV{wiz_ip_range1} =~ /(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/;
my $d2 = "$4" if $ENV{wiz_ip_range2} =~ /(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/;
my $s_trunc = "$1.$2.$3" if $wiz_ip_server =~ /(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/;
my $ds = "$4" if $wiz_ip_server =~ /(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/;
if (!$r1_trunc) { standalone::explanations("DHCP wizard : incorrect adress range 1"); return 1}
if (!$r2_trunc) { standalone::explanations("DHCP wizard : incorrect adress range 2"); return 1}
if ($r1_trunc ne $s_trunc || $r2_trunc ne $s_trunc) {
standalone::explanations("DHCP wizard : range not in network");
return 2;
}
if (!$d1 || !$d2 || $d1 > $d2) { standalone::explanations("DHCP wizard : bad range"); return 1}
if ($ds >= $d1 && $ds <= $d2) { standalone::explanations("DHCP wizard : server in range"); return 3}
10;
}
sub check_dhcp {
$o->is_dhcp() and return 1;
0;
}
sub do_it {
my $wiz_domain_name = $o->network_get("DOMAINNAME");
my $wiz_host_name = $o->network_get("HOSTNAME");
my $wiz_gateway = $o->network_get("GATEWAY");
my $wiz_dns = $o->network_get("dnsServer");
if (!$wiz_gateway) {
my $t = `LC_ALL=C /sbin/ip route list scope global`;
($wiz_gateway) = $t =~ /default via (\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}) dev/;
}
my $wiz_ip_net = "$1.$2.$3.0" if $wiz_ip_server =~ /(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/;
my $err = check();
return $err if $err != 10;
my $wiz_ip_range1 = $ENV{wiz_ip_range1};
my $wiz_ip_range2 = $ENV{wiz_ip_range2};
my $wiz_ip_netmask = $o->itf_get("NETMASK");
my $wiz_device = $o->default_itf();
# patch to rewrite when got new file about dhcp with INTERFACES value
# currently, I put the device to configure as dhcp server
# in /etc/sysconfig/dhcpd
#[ -f /etc/sysconfig/dhcpd ] && cp -f /etc/sysconfig/dhcpd /var/tmp/wiz_bck/orig/dhcpd
my $file = "/etc/sysconfig/dhcpd";
-f $file and MDK::Common::cp_af($file, $file.".orig");
$file = "/etc/rc.d/init.d/dhcpd";
# now patching etc/rc.d/init.d/dhcpd
standalone::explanations("now patching etc/rc.d/init.d/dhcpd");
if (!`grep INTERFACES $file`){
MDK::Common::append_to_file($file, "\nINTERFACES=$wiz_device");
MDK::Common::cp_af($file, $file . ".orig");
my $tmp = `/bin/mktemp /tmp/Dhcpconf.XXXXXX` or die "can't make a temp file: $!";
open(NEW, "> $tmp") or die "can't open $tmp: $!";
open(OLD, "< $file") or die "can't open default: $!";
while (<OLD>) {
if (m|daemon\s*/usr/sbin/dhcp|) {
print NEW "\tif [ -f /etc/sysconfig/dhcpd ]; then
\t\t. /etc/sysconfig/dhcpd
\t\tDEV=\$INTERFACES
\tfi\n";
}
print NEW $_;
}
close(OLD);
close(NEW);
chomp($tmp);
system("mv $tmp $file");
}
$file = "/etc/dhcpd.conf";
-f $file and MDK::Common::cp_af($file, $file.".orig");
output($file, map {
s|__hname__|$wiz_host_name|g;
s|__dns__|$wiz_dns|g;
s|__net__|$wiz_ip_net|g;
s|__ip__|$wiz_ip_server|g;
s|__mask__|$wiz_ip_netmask|g;
s|__rng1__|$wiz_ip_range1|g;
s|__rng2__|$wiz_ip_range2|g;
s|__dname__|$wiz_domain_name|g;
s|__gateway__|$wiz_gateway|g;
$_;
} cat_ ("__WIZ_HOME__/dhcp_wizard/scripts/dhcpd.conf.default"));
standalone::explanations("$file: hname = $wiz_host_name, net = $wiz_ip_net, ip = $wiz_ip_server,
mask = $wiz_ip_netmask, rng1 = $wiz_ip_range1, rng2 = $wiz_ip_range2, dname = $wiz_domain_name");
MDK::Common::touch("/var/dhcpd/dhcpd.leases");
# modifying webmin config
$file="/etc/webmin/dhcpd/config";
if (-f $file) {
my %mdk = Vareqval->get($file);
$mdk{lease_file} = "/var/dhcpd/dhcpd.leases";
$mdk{interfaces} = $wiz_device;
standalone::explanations("$file: lease_file = $mdk{lease_file}, interfaces = $mdk{interfaces}");
Vareqval->commit($file, \%mdk);
!$ENV{wiz_authoritative} and output($file, map {
s|^\s*not\s*authoritative.*|\#$&|i;
$_
} cat_ ("/etc/dhcpd.conf"));
}
system("/etc/rc.d/init.d/dhcpd restart");
10;
}
1;
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