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#!/usr/bin/perl -w
use strict;
my $hostname = `hostname`;
chomp $hostname;
my $realm = "tridgell.net";
my $domain = "BLUDOM";
my $dnsname = "$hostname.$realm";
my $basedn = "DC=" . join(",DN=", split(/\./, $dnsname));
# return the current NTTIME as an integer
sub nttime()
{
my $t = time();
$t += (369.0*365.25*24*60*60-(3.0*24*60*60+6.0*60*60));
$t *= 1.0e7;
return sprintf("%lld", $t);
}
# generate a random guid. Not a good algorithm.
sub randguid()
{
my $r1 = int(rand(2**32));
my $r2 = int(rand(2**16));
my $r3 = int(rand(2**16));
my $r4 = int(rand(2**16));
my $r5 = int(rand(2**32));
return sprintf("%08x-%04x-%04x-%04x-%08x", $r1, $r2, $r3, $r4, $r5);
}
sub randsid()
{
return sprintf("S-1-5-21-%d-%d-%d",
int(rand(10**8)), int(rand(10**8)), int(rand(10**8)));
}
#######################
# substitute a single variable
sub substitute($)
{
my $var = shift;
if ($var eq "BASEDN") {
return $basedn;
}
if ($var eq "DOMAINSID") {
return randsid();
}
if ($var eq "DOMAIN") {
return $domain;
}
if ($var eq "HOSTNAME") {
return $hostname;
}
if ($var eq "DNSNAME") {
return $dnsname;
}
if ($var eq "LDAPTIME") {
return "20040408072022.0Z";
}
if ($var eq "NEWGUID") {
return randguid();
}
if ($var eq "NTTIME") {
return "" . nttime();
}
die "ERROR: Uknown substitution variable $var\n";
}
#####################################################################
# read a file into a string
sub FileLoad($)
{
my($filename) = shift;
local(*INPUTFILE);
open(INPUTFILE, $filename) || return undef;
my($saved_delim) = $/;
undef $/;
my($data) = <INPUTFILE>;
close(INPUTFILE);
$/ = $saved_delim;
return $data;
}
my $data = FileLoad("provision.ldif") || die "Unable to load provision.ldif\n";
my $res = "";
while ($data =~ /(.*?)\$\{(\w*)\}(.*)/s) {
my $sub = substitute($2);
$res .= "$1$sub";
$data = $3;
}
print $res . $data;
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