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#!/usr/bin/perl -w
use strict;
use Getopt::Long;
my $opt_hostname = `hostname`;
chomp $opt_hostname;
my $netbiosname;
my $opt_realm;
my $opt_domain;
my $dnsdomain;
my $dnsname;
my $basedn;
sub ldaptime()
{
my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday) = gmtime(time);
return sprintf "%04u%02u%02u%02u%02u%02u.0Z",
$year+1900, $mon+1, $mday, $hour, $min, $sec;
}
#######################
# substitute a single variable
sub substitute($)
{
my $var = shift;
if ($var eq "BASEDN") {
return $basedn;
}
if ($var eq "NETBIOSNAME") {
return $netbiosname;
}
if ($var eq "DNSNAME") {
return $dnsname;
}
if ($var eq "DNSDOMAIN") {
return $dnsdomain;
}
die "ERROR: Uknown substitution variable $var\n";
}
#####################################################################
# write a string into a file
sub FileSave($$)
{
my($filename) = shift;
my($v) = shift;
local(*FILE);
open(FILE, ">$filename") || die "can't open $filename";
print FILE $v;
close(FILE);
}
#####################################################################
# read a file into a string
sub FileLoad($)
{
my($filename) = shift;
local(*INPUTFILE);
open(INPUTFILE, $filename) || return undef;
my($saved_delim) = $/;
undef $/;
my($data) = <INPUTFILE>;
close(INPUTFILE);
$/ = $saved_delim;
return $data;
}
############################################
# show some help
sub ShowHelp()
{
print "
Samba4 provisioning
rootdse.pl [options]
--realm REALM set realm
--domain DOMAIN set domain
--hostname HOSTNAME set hostname
You must provide at least a realm and domain
";
exit(1);
}
my $opt_help;
GetOptions(
'help|h|?' => \$opt_help,
'realm=s' => \$opt_realm,
'domain=s' => \$opt_domain,
'hostname=s' => \$opt_hostname,
);
if ($opt_help ||
!$opt_realm ||
!$opt_domain ||
!$opt_hostname) {
ShowHelp();
}
$opt_realm=uc($opt_realm);
$opt_domain=uc($opt_domain);
$opt_hostname=lc($opt_hostname);
$netbiosname=uc($opt_hostname);
print "Provisioning host '$opt_hostname' with netbios name '$netbiosname' for domain '$opt_domain' in realm '$opt_realm'\n";
print "generating ldif ...\n";
$dnsdomain = lc($opt_realm);
$dnsname = $opt_hostname.".".$dnsdomain;
$basedn = "DC=" . join(",DC=", split(/\./, $opt_realm));
my $data = FileLoad("rootdse.ldif") || die "Unable to load rootdse.ldif\n";
my $res = "";
print "applying substitutions ...\n";
while ($data =~ /(.*?)\$\{(\w*)\}(.*)/s) {
my $sub = substitute($2);
$res .= "$1$sub";
$data = $3;
}
$res .= $data;
print "saving ldif to newrootdse.ldif ...\n";
FileSave("newrootdse.ldif", $res);
unlink("newrootdse.ldb");
print "creating newrootdse.ldb ...\n";
# allow provisioning to be run from the source directory
$ENV{"PATH"} .= ":bin";
system("ldbadd -H newrootdse.ldb newrootdse.ldif");
print "done
Please move newrootdse.ldb to rootdse.ldb in the private/ directory of your
Samba4 installation
";
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