#!/usr/bin/perl

package Dnsconf;
require "__WIZ_HOME__/common/scripts/Vareqval.pm";
use MDK::Common;
use strict;

sub	up_serial {
    my	($file) = @_;
    
    my	$serial_nbm = `date +%Y%m%d00`		or die "date not found: $!";
    my  $tmp = `mktemp /tmp/Dnsconf.XXXXXX`	or die "can't make a temp file: $!";
    open(OLD, "< $file")			or die "can't open $file: $!";
    open(NEW, "> $tmp")				or die "can't open $tmp: $!";
    while (<OLD>) {
	if (/^([[:space:]]*)([0-9]*)([[:space:]]*;[[:space:]]*Serial.*)$/) {
	    my $serial_f = $2;
	    $serial_f++;
	    if ($serial_f <= $serial_nbm) {
		$serial_f = $serial_nbm;
		chomp($serial_f);
		$_ = "$1$serial_f$3\n";
	    }
	}
	print NEW $_;
    }
    close(OLD)	                or die "can't close $file: $!";
    close(NEW)                  or die "can't close $tmp: $!";
    system("mv $tmp $file");
}

sub	do_it {
    my %mdk = Vareqval->get("/etc/sysconfig/mdk_serv");
    my $wiz_domain_name = $mdk{wiz_domain_name}	if defined $mdk{wiz_domain_name} or
	die "wiz_domain_name not in /etc/sysconfig/mdk_serv";
    my $wiz_host_name = $mdk{wiz_host_name}	if defined $mdk{wiz_host_name} or 
	die "wiz_host_name not in /etc/sysconfig/mdk_serv";
    
    my $device = $mdk{wiz_device}		if defined $mdk{wiz_host_name} or
	die "wiz_device not in /etc/sysconfig/mdk_serv";
    my %mdk = Vareqval->get("/etc/sysconfig/network-scripts/ifcfg-".$device);
    my $wiz_ip_net = $mdk{NETWORK}		if defined $mdk{NETWORK} or 
	die "NETWORK not in /etc/sysconfig/network-scripts/ifcfg-$device";
    my $wiz_ip_server = $mdk{IPADDR}		if defined $mdk{IPADDR} or 
	die "IPADDR not in /etc/sysconfig/network-scripts/ifcfg-$device";
    
    my $s_trunc = "$1.$2.$3" if $wiz_ip_net =~ /(\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})/;
    my $host = "$1" if $wiz_host_name =~ /(.*?)\..*/;
    my $reversnet = "$3$2$1" if $wiz_ip_net =~ /(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/;
    my $file = "/etc/host.conf";
    
    MDK::Common::cp_af($file, $file.".orig");
    MDK::Common::cp_af("__WIZ_HOME__/dns_wizard/scripts/host.conf.default", $file);
    
    $file = "/etc/named.conf";
    MDK::Common::cp_af($file, $file.".orig");
    
# now putting ${file} configuration"
        
    my  $tmp = `mktemp /tmp/Dnsconf.XXXXXX`						or die "can't make a temp file: $!";
    open(OLD, "< __WIZ_HOME__/dns_wizard/scripts/host.conf.default")	or die "can't open default: $!";
    open(NEW, "> $tmp")									or die "can't open $tmp: $!";
    my $ispns1 = $ENV{wiz_ext_dns1} || "// __ISPN1__";
    my $ispns2 = $ENV{wiz_ext_dns2} || "// __ISPN2__";
    while (<OLD>) {
	s|__ISPNS1__|$ispns1|g;
	s|__ISPNS2__|$ispns2|g;
	s|__dname__|$wiz_domain_name|g;
	s|__revnet__|$reversnet|g;
	s|__net__|$s_trunc|g;
	print NEW $_;
    }
    close(OLD);
    close(NEW);
    system("mv $tmp $file");
# Bug fix for bind 9:
    if (! -f "/etc/rndc.key") {system("touch /etc/rndc.key") or die "can not touch /etc/rndc.key: $!"};

# root.hints
    $file="/var/named/root.hints";
    MDK::Common::cp_af($file, $file . ".orig");
    MDK::Common::cp_af("__WIZ_HOME__/dns_wizard/scripts/root.hints.default", $file);
    $file="/var/named/127.0.0.rev";
    MDK::Common::cp_af($file, $file . ".orig");
    my  $tmp = `mktemp /tmp/Dnsconf.XXXXXX`						or 
	die "can't make a temp file: $!";
    open(NEW, "> $tmp")									or 
	die "can't open $tmp: $!";
    open(OLD, "< __WIZ_HOME__/dns_wizard/scripts/127.0.0.rev.default")	or 
	die "can't open default: $!";
    while (<OLD>) {
	s|__hname__|$wiz_host_name|;
	print NEW $_;
    }
    close(OLD);
    close(NEW);
    system("mv $tmp $file");
    up_serial($file);
    
#ipnet.rev
    $file = "/var/named/$s_trunc.rev";
    MDK::Common::cp_af($file, $file.".orig");
    my  $tmp = `mktemp /tmp/Dnsconf.XXXXXX`				or
	die "can't make a temp file: $!";
    open(NEW, "> $tmp")							or
	die "can't open $tmp: $!";
    open(OLD, "< __WIZ_HOME__/dns_wizard/scripts/ipnet.rev.default")	or
	die "can't open default: $!";
    while (<OLD>) {
	s|__dname__|$wiz_domain_name|g;
	s|__hname__|$wiz_host_name|g;
	s|__revnet__|$reversnet|g;
	s|__nb__|$ds|;
	print NEW $_;
    }
    close(OLD);
    close(NEW);
    system("mv $tmp $file");
    up_serial($file);
    
    $file = "/var/named/$wiz_domain_name.db";
    MDK::Common::cp_af($file, $file.".orig");
    my  $tmp = `mktemp /tmp/Dnsconf.XXXXXX` or
	die "can't make a temp file: $!";
    open(NEW, "> $tmp")	or
	die "can't open $tmp: $!";
    open(OLD, "< __WIZ_HOME__/dns_wizard/scripts/domain.db.default") or
	die "can't open default: $!";
    while (<OLD>) {
	s|__dname__|$wiz_domain_name|g;
	s|__hname__|$wiz_host_name|g;
	s|__ip__|$wiz_ip_server|g;
	s|__host__|$ENV{host}|g;
	print NEW $_;
    }
    close(OLD);
    close(NEW);
    system("mv $tmp $file");
    up_serial($file);

#resolv.conf
    $file = "/etc/resolv.conf";
    MDK::Common::cp_af($file, $file.".orig");
    open(NEW, "> $file");
    print NEW "domain $wiz_domain_name\n";
    print NEW "nameserver $wiz_ip_server\n";

    print "toto\n";
    system("/sbin/chkconfig --level 235 named on") or die "error on running /sbin/chkconfig: $!";

    system("/etc/rc.d/init.d/named restart") or die "error on restarting /etc/rc.d/init.d/named: $!";
    print "tata\n";
    %mdk = Vareqval->get("/etc/sysconfig/mdk_serv");
    $mdk{wiz_caching_dns} = "1";
    Vareqval->commit("/etc/sysconfig/mdk_serv", \%mdk);
}

1;