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#!/usr/bin/perl -w
# simple hack script to add a new user for Samba4
use strict;
use Socket;
use Getopt::Long;
my $opt_password;
my $opt_username;
my $opt_unixname;
my $opt_samdb = "/usr/local/samba/private/sam.ldb";
# 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));
my $r6 = int(rand(2**16));
return sprintf("%08x-%04x-%04x-%04x-%08x%04x", $r1, $r2, $r3, $r4, $r5, $r6);
}
# generate a random password. Poor algorithm :(
sub randpass()
{
my $pass = "";
my $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ%\$!~";
for (my $i=0;$i<8;$i++) {
my $c = int(rand(length($chars)));
$pass .= substr($chars, $c, 1);
}
return $pass;
}
sub search($$)
{
my $expr = shift;
my $attrib = shift;
my $res = `ldbsearch \"$expr\" $attrib | grep ^$attrib | cut -d' ' -f2- | head -1`;
chomp $res;
return $res;
}
############################################
# show some help
sub ShowHelp()
{
print "
Samba4 newuser
provision.pl [options]
--username USERNAME choose new username
--password PASSWORD set password
--samdb DBPATH path to sam.ldb
You must provide at least a username
";
exit(1);
}
my $opt_help;
GetOptions(
'help|h|?' => \$opt_help,
'username=s' => \$opt_username,
'unixname=s' => \$opt_unixname,
'password=s' => \$opt_password,
'samdb=s' => \$opt_samdb
);
if ($opt_help || !$opt_username) {
ShowHelp();
}
if (!$opt_password) {
$opt_password = randpass();
print "chose random password '$opt_password'\n";
}
if (!$opt_unixname) {
$opt_unixname = $opt_username;
}
my $res = "";
# allow provisioning to be run from the source directory
$ENV{"PATH"} .= ":bin";
$ENV{"LDB_URL"} = $opt_samdb;
my $domain_sid = search("(objectClass=domainDNS)", "objectSid");
my $domain_dn = search("(objectClass=domainDNS)", "dn");
my $ldif = `ldbsearch 'cn=TemplateUser' | grep -v Template | grep -v '^#'`;
chomp $ldif;
$ldif .= "name: $opt_username\n";
my $sid;
# crude way of working out a rid
for (my $i=1001;$i<1100;$i++) {
if (search("objectSid=$domain_sid-$i","objectSid") eq "") {
$sid = "$domain_sid-$i";
last;
}
}
print "Chose new SID $sid\n";
$ldif .= "objectSid: $sid\n";
$ldif .= "objectGUID: " . randguid() . "\n";
my $dom_users = search("name=Domain Users", "dn");
$ldif .= "memberOf: $dom_users\n";
$ldif .= "userAccountControl: 0x10200\n";
$ldif .= "sAMAccountType: 0x30000000\n";
$ldif .= "unicodePwd: $opt_password\n";
$ldif .= "unixName: $opt_unixname\n";
my $user_dn = "CN=$opt_username,CN=Users,$domain_dn";
open FILE, ">newuser.ldif";
print FILE "dn: $user_dn";
print FILE "$ldif\n";
close FILE;
open FILE, ">modgroup.ldif";
print FILE "
dn: CN=Domain Users,CN=Users,$domain_dn
changetype: modify
add: member
member: $user_dn
";
close FILE;
system("ldbadd newuser.ldif");
system("ldbmodify modgroup.ldif");
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