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#!/usr/bin/perl
# Drakwizard
# Copyright (C) 2002, 2003 Mandrakesoft
#
# Authors: Arnaud Desmons <adesmons@mandrakesoft.com>
# Florent Villard <warly@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 MDK::Wizard::Dhcp;
use strict;
use common;
use MDK::Wizard::Varspaceval;
use services;
use MDK::Wizard::Wizcommon;
my $wiz = new MDK::Wizard::Wizcommon;
my $wiz_ip_server = $wiz->{net}->itf_get("IPADDR");
my $wiz_tftpserverip = $wiz_ip_server;
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})/;
my $o = {
name => N("DHCP Wizard"),
var => {
ip1 => '',
ip2 => '',
wiz_authoritative => 0,
einterface => $wiz->{net}->default_itf
},
needed_rpm => [ 'dhcp-server' ],
defaultimage => "$ENV{__WIZ_HOME__}dhcp_wizard/images/DHCP.png"
};
$o->{pages} = {
welcome => {
name => N("DHCP Wizard") . "\n\n\n" . N("DHCP is a service that automatically assigns networking addresses to your workstations.") . "\n\n\n" . N("This wizard will help you configuring the DHCP services of your server."),
post => sub { $wiz->check_dhcp },
no_back => 1,
next => 'ip_range'
},
ip_range => {
name => N("Range of addresses used by dhcp") . "\n\n\n" . N("Select the range of addresses assigned to the workstations by the DHCP service; unless you have special needs, you can safely accept the proposed values."),
pre => sub {
$o->{var}{ip1} ||= compute_range();
$o->{var}{ip2} ||= compute_range2()
},
post => \&check,
data => [
{ label => N("Lowest IP Address:"), val => \$o->{var}{ip1} },
{ label => N("Highest IP Address:"), val => \$o->{var}{ip2} },
],
next => 'summary'
},
interface => {
name => N("Interface the dhcp server must listen to"),
pre => sub {
$o->{var}{interface} ||= $wiz->{net}->default_itf
},
data => [
{ list => [ keys %{$wiz->{net}{itf}} ], val => \$o->{var}{interface} },
],
next => 'summary'
},
dhcp_warning => {
name => N("Warning") . "\n\n" . N("You are in dhcp, server may not work with your configuration."),
ignore => 1,
next => 'ip_range'
},
ip_range_error => {
name => N("Error") . "\n\n" . N("The IP range specified is not correct."),
ignore => 1,
next => 'ip_range'
},
ip_range_warning => {
name => N("Warning") . "\n\n" . N("The IP range specified is not in server address range."),
ignore => 1,
next => 'summary'
},
server_in_range => {
name => N("Error") . "\n\n" . N("The IP of the server must not be in range."),
ignore => 1,
next => 'ip_range'
},
summary => {
name => N("Configuring the DHCP Server") . "\n\n" . N("The wizard collected the following parameters needed to configure your DHCP service:"),
data => [
{ label => N("Lowest IP Address:"), fixed_val => \$o->{var}{ip1} },
{ label => N("Highest IP Address:"), fixed_val => \$o->{var}{ip2} },
{ label => N("Interface:"), fixed_val => \$o->{var}{interface} },
],
post => \&do_it,
next => 'end'
},
end => {
name => N("Congratulations") . "\n\n" . N("The wizard successfully configured the DHCP services of your server."),
end => 1,
next => 0
},
};
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 {
my $check_ip = sub { return $_[0] < 0 || $_[0] > 255 ? 0 : 1 };
my $r1_trunc = "$1.$2.$3" if $o->{var}{ip1} =~ /(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/;
foreach ($1, $2, $3, $4) { $check_ip->($_) or return 'ip_range_error' }
my $r2_trunc = "$1.$2.$3" if $o->{var}{ip2} =~ /(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/;
foreach ($1, $2, $3, $4) { $check_ip->($_) or return 'ip_range_error' }
my $d1 = $4 if $o->{var}{ip1} =~ /(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/;
my $d2 = $4 if $o->{var}{ip2} =~ /(\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 'ip_range_error' }
if (!$r2_trunc) { standalone::explanations("DHCP wizard : incorrect adress range 2"); return 'ip_range_error' }
if ($r1_trunc ne $s_trunc || $r2_trunc ne $s_trunc) {
standalone::explanations("DHCP wizard : range not in network");
return 'ip_range_warning';
}
if (!$d1 || !$d2 || $d1 > $d2) { standalone::explanations("DHCP wizard : bad range"); return 'ip_range_error' }
if ($ds >= $d1 && $ds <= $d2) { standalone::explanations("DHCP wizard : server in range"); return 'server_in_range' }
return 'interface' if keys %{$wiz->{net}{itf}} > 1;
0
}
sub do_it {
$::testing and return;
my $wiz_domain_name = $wiz->{net}->network_get("DOMAINNAME");
my $wiz_host_name = $wiz->{net}->network_get("HOSTNAME");
my $wiz_gateway = $wiz->{net}->network_get("GATEWAY");
my $wiz_dns = $wiz->{net}->network_get("dnsServer");
if ($wiz_dns eq '127.0.0.1') {
$wiz_dns = $wiz_ip_server
}
if (!$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 != 0;
my $wiz_ip_range1 = $o->{var}{ip1};
my $wiz_ip_range2 = $o->{var}{ip2};
my $wiz_ip_netmask = $wiz->{net}->itf_get("NETMASK");
my $wiz_device = $o->{var}{interface};
# 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");
standalone::explanations("now patching etc/sysconfig/dhcpd");
if (!`grep INTERFACES $file`) {
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|INTERFACE|) {
print NEW "# $_";
}
print NEW $_;
}
MDK::Common::append_to_file($tmp, "\n# Added by drakwizard\nINTERFACES=$wiz_device");
close(OLD);
close(NEW);
chomp($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__|$wiz_gateway|g;
s|__tftpserverip__|$wiz_tftpserverip|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 $file) {
my %mdk = MDK::Wizard::Varspaceval->get($file);
$mdk{lease_file} = "/var/dhcpd/dhcpd.leases";
$mdk{interfaces} = $wiz_device;
standalone::explanations("$file: lease_file = $mdk{lease_file}, interfaces = $mdk{interfaces}");
MDK::Wizard::Varspaceval->commit($file, \%mdk);
!$o->{var}{wiz_authoritative} and output($file, map {
s|^\s*not\s*authoritative.*|#$&|i;
$_
} cat_("/etc/dhcpd.conf"));
}
if (services::is_service_running('dhcpd')) {
services::restart('dhcpd')
} else {
services::start('dhcpd')
}
10;
}
sub new {
my ($class, $conf) = @_;
bless {
o => $o,
}, $class;
}
1;
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