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#!/usr/bin/env smbscript
/*
	add a new user to a Samba4 server
	Copyright Andrew Tridgell 2005
	Released under the GNU GPL v2 or later
*/

options = new Object();
ok = GetOptions(ARGV, options, 
		"POPT_AUTOHELP",
		"POPT_COMMON_SAMBA",
		"POPT_COMMON_VERSION",
		'username=s',
		'unixname=s',
		'password=s',
		'quiet');
if (ok == false) {
   println("Failed to parse options: " + options.ERROR);
   return -1;
}

libinclude("base.js");

var samdb = lpGet("sam database");

/*
  print a message if quiet is not set
*/
function message() 
{
	if (options["quiet"] == undefined) {
		print(vsprintf(arguments));
	}
}

/*
  search for one attribute as a string
 */
function search(db, expression, attribute)
{
	var attrs = new Array(attribute);
	res = ldbSearch(db, expression, attrs);
	if (res.length != 1 ||
	    res[0][attribute] == undefined) {
		return undefined;
	}
	return res[0][attribute];
}

/*
 show some help
*/
function ShowHelp()
{
	print("
Samba4 newuser

newuser [options]
  --username  USERNAME     choose new username
  --unixname  USERNAME     choose unix name of new user
  --password  PASSWORD     set password

You must provide at least a username
");
	exit(1);
}

if (options['username'] == undefined) {
	ShowHelp();
}
if (options['password'] == undefined) {
	options.password = randpass(12);
	printf("chose random password %s\n", options.password);
}
if (options['unixname'] == undefined) {
	options.unixname = options.username;
}

if (getpwnam(options.unixname) == undefined) {
	printf("ERROR: Unix user '%s' does not exist\n", options.unixname);
	exit(1);
}

if (search(samdb, "name=" + options.username, "dn") != undefined) {
	printf("ERROR: User '%s' already exists\n", options.username);
	exit(1);
}

var domain_dn = search(samdb, "objectClass=domainDNS", "dn");
assert(domain_dn != undefined);
var dom_users = search(samdb, "name=Domain Users", "dn");
assert(dom_users != undefined);

var user_dn = sprintf("CN=%s,CN=Users,%s", options.username, domain_dn);

/*
  the new user record. note the reliance on the samdb module to fill
  in a sid, guid etc
 */
var ldif = sprintf("
dn: %s
sAMAccountName: %s
name: %s
memberOf: %s
unixName: %s
objectGUID: %s
unicodePwd: %s
objectClass: user
",
		   user_dn, options.username, options.username, dom_users,
		   options.unixname, randguid(), options.password);

/*
  add the user to the users group as well
*/
var modgroup = sprintf("
dn: %s
changetype: modify
add: member
member: %s
", dom_users, user_dn);

/*
  now the real work
 */
message("Adding user %s\n", user_dn);
ok = ldbAdd(samdb, ldif);
if (ok != true) {
	message("Failed to add %s\n", user_dn);
	exit(1);
}

message("Modifying group %s\n", dom_users);
ok = ldbModify(samdb, modgroup);
if (ok != true) {
	message("Failed to modify %s\n", dom_users);
	exit(1);
}

message("All OK\n");
return 0;