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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 services;
use MDK::Wizard::Varspaceval;
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 $o = {
name => N("DHCP Wizard"),
var => {
ip1 => '',
ip2 => '',
pxe => '1',
gateway => '',
wiz_authoritative => 0,
interface => $wiz->{net}->default_itf
},
needed_rpm => [ 'dhcp-server' ],
defaultimage => "/usr/share/mcc/themes/default/dhcp_server-mdk.png",
};
$o->{pages} = {
welcome => {
name => N("DHCP Wizard") . "\n\n\n" . N("DHCP is a service that automatically assigns networking addresses to your workstations.") . "\n\n\n" . N("This wizard will help you configuring the DHCP services of your server."),
no_back => 1,
next => 'interface', no_back => 1,
},
interface => {
name => N("Interface the dhcp server must listen to"),
pre => sub {
if (!$wiz_ip_server) {
my $interface = 'eth0';
($wiz_ip_server) = `/sbin/ip addr show dev $interface` =~ /^\s*inet\s+(\d+\.\d+\.\d+\.\d+)/m;
}
$o->{var}{interface} |= $wiz->{net}->default_itf;
},
data => [
{ list => [ keys %{$wiz->{net}{itf}} ], val => \$o->{var}{interface} },
],
next => 'ip_range',
no_back => 1,
},
ip_range => {
name => N("Range of addresses used by DHCP") . "\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. (ie: 192.168.100.20 192.168.100.40)") . "\n\n" . N("If you want to enable PXE in your dhcp server please check the box (Pre-boot eXecution Environment, a protocol that allows computers to boot through the network)."),
pre => sub {
#($wiz_ip_server) = `/sbin/ip addr show dev $o->{var}{interface}` =~ /^\s*inet\s+(\d+\.\d+\.\d+\.\d+)/m;
($wiz_ip_server) = $wiz->{net}{itf}{$o->{var}{interface}}{IPADDR};
$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})/;
$o->{var}{ip1} = compute_range($d, $s);
$o->{var}{ip2} = compute_range2($d, $s);
},
data => [
{ label => N("Lowest IP address:"), val => \$o->{var}{ip1} },
{ label => N("Highest IP address:"), val => \$o->{var}{ip2} },
{ label => N("Gateway IP address:"), val => \$o->{var}{gateway} },
{ label => N("Enable PXE:"), type => 'bool', val => \$o->{var}{pxe} },
],
next => 'summary',
no_back => 1,
},
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:"),
pre => sub {
$o->{var}{pxeornot} = $o->{var}{pxe} ? N("enabled") : N("disabled");
},
data => [
{ label => N("Lowest IP address:"), val_ref => \$o->{var}{ip1} },
{ label => N("Highest IP address:"), val_ref => \$o->{var}{ip2} },
{ label => N("Gateway IP address:"), val_ref => \$o->{var}{gateway} },
{ label => N("Interface:"), val_ref => \$o->{var}{interface} },
{ label => N("Enable PXE:"), val_ref => \$o->{var}{pxeornot} },
],
post => \&do_it,
next => 'end',
},
end => {
name => N("Congratulations") . "\n\n" . N("The wizard successfully configured the DHCP services."),
end => 1,
no_back => 1,
},
error_end => {
name => N("Failed"),
data => [ { label => N("Relaunch drakwizard, and try to change some parameters.") } ],
no_back => 1,
end => 1,
},
};
sub compute_range {
my ($d, $s) = @_;
my $n;
if ($d <= 64) {
$n = "65";
} elsif ($d <= 128) {
$n = "129";
} else {
$n = "1";
}
"$s.$n";
}
sub compute_range2 {
my ($d, $s) = @_;
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 $in = 'interactive'->vnew('su', 'DHCP');
check_starts_on_boot($in, 'dhcpd');
my $wiz_domain_name = $wiz->{net}->network_get("DOMAINNAME");
my $wiz_host_name = $wiz->{net}->network_get("HOSTNAME");
my $wiz_dns = $wiz->{net}->network_get("dnsServer");
if ($wiz_dns eq '127.0.0.1') {
$wiz_dns = $wiz_ip_server;
}
if (!$o->{var}{gateway}) {
my $t = `LC_ALL=C /sbin/ip route list scope global`;
($o->{var}{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 = $wiz->{net}->itf_get("NETMASK");
if (!$wiz_ip_netmask) { $wiz_ip_netmask = "255.255.255.0" }
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: $!";
chomp($tmp);
output($tmp,
(map {
if (m|INTERFACE|) {
"# $_";
}
# FIXME: we probably lack a "else":
$_;
} cat_or_die($file)),
"\n# Added by drakwizard\nINTERFACES=$wiz_device");
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__|$o->{var}{gateway}|g;
s|__tftpserverip__|$wiz_tftpserverip|g;
s|__dhcpd_interface__|$wiz_device|g;
$_;
} cat_("/usr/share/wizards//dhcp_wizard/scripts/dhcpd.conf.default"));
standalone::explanations("$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;
$_;
} cat_("/etc/dhcpd.conf"));
}
if ($o->{var}{pxe} eq '0') {
substInFile {
s/#\s+deny members of "PXE"/deny members of "PXE"/;
} "/etc/dhcpd.conf";
}
$o->{var}{gateway} or substInFile {
s/#\s+doption routers.*//;
} "/etc/dhcpd.conf";
services::restart_or_start('dhcpd');
check_started('dhcpd');
}
sub new {
my ($class) = @_;
bless $o, $class;
}
1;
|
