LDAPAccountManager/lam/lib/modules/posixGroup.inc

<?php
/*
$Id$

This code is part of LDAP Account Manager (http://www.sourceforge.net/projects/lam)
Copyright (C) 2003  Tilo Lutz

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/


class posixGroup extends baseModule {

	// Variables
	// Use a unix password?
	var $userPassword_no;
	// Lock account?
	var $userPassword_lock;
	// change gids of users and hosts?
	var $changegids;

	/**
	* Creates a new posixGroup object.
	*/
	function posixGroup($scope) {
		// load error messages
		$this->load_errorMessages();
		// call parent constructor
		parent::baseModule($scope);
	}


	/**
	* In this function the LDAP account is built up.
	*
	* @param array $rawAccounts list of hash arrays (name => value) from user input
	* @param array $partialAccounts list of hash arrays (name => value) which are later added to LDAP
	* @param array $ids list of IDs for column position (e.g. "posixAccount_uid" => 5)
	* @return array list of error messages if any
	*/
	function build_uploadAccounts($rawAccounts, $ids, &$partialAccounts) {
		$errors = array();
		for ($i = 0; $i < sizeof($rawAccounts); $i++) {
			if (!in_array("posixGroup", $partialAccounts[$i]['objectClass'])) $partialAccounts[$i]['objectClass'][] = "posixGroup";
			if (eregi(".*", $rawAccounts[$i][$ids['posixGroup_cn']])) {  // TODO use real regex for group name
				$partialAccounts[$i]['cn'] = $rawAccounts[$i][$ids['posixGroup_cn']];
			}
			if ($rawAccounts[$i][$ids['posixGroup_gid']] == "") {
				// TODO autoGID
				$partialAccounts[$i]['gidNumber'] = 42;
			}
			elseif (eregi(".*", $rawAccounts[$i][$ids['posixGroup_gid']])) {  // TODO use real regex for group name
				$partialAccounts[$i]['gidNumber'] = $rawAccounts[$i][$ids['posixGroup_gid']];
			}
			if ($rawAccounts[$i][$ids['posixGroup_description']] == "") {
				$partialAccounts[$i]['description'] = $partialAccounts[$i]['cn'];
			}
			elseif (eregi(".*", $rawAccounts[$i][$ids['posixGroup_description']])) {  // TODO use real regex for group name
				$partialAccounts[$i]['description'] = $rawAccounts[$i][$ids['posixGroup_description']];
			}
			if ($rawAccounts[$i][$ids['posixGroup_members']] != "") {
				if (eregi(".*", $rawAccounts[$i][$ids['posixGroup_members']])) {  // TODO use real regex for group name
					$partialAccounts[$i]['memberUid'] = explode(",", $rawAccounts[$i][$ids['posixGroup_members']]);
				}
				else {
					$errors[] = array(); // TODO error message
				}
			}
			if ($rawAccounts[$i][$ids['posixGroup_password']] != "") {
				if (eregi(".*", $rawAccounts[$i][$ids['posixGroup_password']])) {  // TODO use real regex for group name
					$partialAccounts[$i]['password'] = pwd_hash($rawAccounts[$i][$ids['posixGroup_password']], true, $this->moduleSettings['posixAccount_pwdHash'][0]);
				}
				else {
					$errors[] = array(); // TODO error message
				}
			}
		}
		return $errors;
	}


	function delete_attributes($post) {
		if ($_SESSION['cache']->in_cache($this->attributes['gidNumber'][0], 'gidNumber', 'user'))
		$return[$_SESSION[$this->base]->dn]['errors'][] = array ('ERROR', _('Primary groupmembers'), _('There are still primary members in group.'));
		return $return;
	}


	/* This function will create the html-page
	* to show a page with all attributes.
	* It will output a complete html-table
	*/
	function display_html_attributes($post) {
		if ($this->attributes['userPassword'][0] != $this->orig['userPassword'][0]) $password=$this->userPassword();
		else if ($this->attributes['userPassword'][0] != '') $password=$post['userPassword'];
		if (!$profile) {
			$return[] = array ( 0 => array ( 'kind' => 'text', 'text' => _("Groupname").'*' ),
			1 => array ( 'kind' => 'input', 'name' => 'cn', 'type' => 'text', 'size' => '20', 'maxlength' => '20', 'value' => $this->attributes['cn'][0]),
			2 => array ('kind' => 'help', 'value' => 'cn'));
			$return[] = array ( 0 => array ( 'kind' => 'text', 'text' => _('GID number').'*' ),
			1 => array ( 'kind' => 'input', 'name' => 'gidNumber', 'type' => 'text', 'size' => '6', 'maxlength' => '6', 'value' => $this->attributes['gidNumber'][0]),
			2 => array ('kind' => 'help', 'value' => 'gidNumber'));
		}
		$return[] = array ( 0 => array ( 'kind' => 'text', 'text' => _('Description') ),
		1 => array ( 'kind' => 'input', 'name' => 'description', 'type' => 'text', 'size' => '30', 'maxlength' => '255', 'value' => $this->attributes['description'][0]),
		2 => array ('kind' => 'help', 'value' => 'description'));
		if (!$profile) {
			$return[] = array ( 0 => array ( 'kind' => 'text', 'text' => _("Group members").'*' ),
			1 => array ( 'kind' => 'input', 'name' => 'adduser', 'type' => 'submit', 'value' => _('Edit groups')),
			2 => array ('kind' => 'help', 'value' => 'adduser'));
			$return[] = array ( 0 => array ( 'kind' => 'text', 'text' => _('Password') ),
			1 => array ( 'kind' => 'input', 'name' => 'userPassword', 'type' => 'password', 'size' => '20', 'maxlength' => '255', 'value' => $password),
			2 => array ( 'kind' => 'input', 'name' => 'genpass', 'type' => 'submit', 'value' => _('Generate password')));
			if ($post['userPassword2']!='') $password2 = $post['userPassword2'];
			 else $password2 = $password;
			$return[] = array ( 0 => array ( 'kind' => 'text', 'text' => _('Repeat password') ),
			1 => array ( 'kind' => 'input', 'name' => 'userPassword2', 'type' => 'password', 'size' => '20', 'maxlength' => '255', 'value' => $password2),
			2 => array ('kind' => 'help', 'value' => 'userPassword'));
		}
		$return[] = array ( 0 => array ( 'kind' => 'text', 'text' => _('Use no password') ),
		1 => array ( 'kind' => 'input', 'name' => 'userPassword_no', 'type' => 'checkbox', 'checked' => $this->userPassword_no),
		2 => array ('kind' => 'help', 'value' => 'userPassword_no'));
		$return[] = array ( 0 => array ( 'kind' => 'text', 'text' => _('Lock password') ),
		1 => array ( 'kind' => 'input', 'name' => 'userPassword_lock', 'type' => 'checkbox', 'checked' => $this->userPassword_lock),
		2 => array ('kind' => 'help', 'value' => 'userPassword_lock'));
		if ($this->attributes['gidNumber'][0]!=$this->orig['gidNumber'][0] && $this->orig['gidNumber'][0]!='' && !$profile) {
			$return[] = array ( 0 => array ( 'kind' => 'text', 'text' => _('Change GID number of users and hosts') ),
			1 => array ( 'kind' => 'input', 'name' => 'changegids', 'type' => 'checkbox', 'checked' => $this->changegids),
			2 => array ('kind' => 'help', 'value' => 'changegids'));
		}
		return $return;
	}


	function display_html_delete($post) {
		// Get list of primary groupmembers.
		return 0;
	}


	function display_html_user($post, $profile=false) {
		// load list with all groups
		$dn_users = $_SESSION['cache']->get_cache('uid', 'posixAccount', 'user');
		if (is_array($dn_users)) {
			foreach ($dn_users as $user) $users[] = $user[0];
			// sort groups
			sort($users, SORT_STRING);
			// remove groups the user is member of from grouplist
			$users = array_delete($this->attributes['memberUid'], $users);
			// Remove primary group from grouplist
			$users_dn = $_SESSION['cache']->get_cache('gidNumber', 'posixAccount', 'user');
			$DNs = array_keys($users_dn);
			for ($i=0; $i<count($DNs); $i++) {
				if ($users_dn[$DNs[$i]][0]==$this->attributes['gidNumber'][0]) {
					$thisuser = substr($DNs[$i], 4, strpos($DNs[$i], ",")-4);
					if (in_array($thisuser, $users)) {
						$users = @array_flip($users);
						unset($users[$thisuser]);
						$users = @array_flip($users);
					}
				}
			}
			// sort users
			sort($users);
		}
		$return[] = array ( 0 => array ( 'kind' => 'fieldset', 'legend' => _("Group members"), 'value' =>
		array ( 0 => array ( 0 => array ('kind' => 'fieldset', 'td' => array ('valign' => 'top'), 'legend' => _("Selected users"), 'value' =>
		array ( 0 => array ( 0 => array ( 'kind' => 'select', 'name' => 'removeusers[]', 'size' => '15', 'multiple', 'options' => $this->attributes['memberUid'])))),
		1 => array ( 'kind' => 'table', 'value' => array ( 0 => array ( 0 => array ( 'kind' => 'input', 'type' => 'submit', 'name' => 'addusers_button',
		'value' => '<=')), 1 => array ( 0 => array ( 'kind' => 'input', 'type' => 'submit', 'name' => 'removeusers_button', 'value' => '=>' )),
		2 => array ( 0 => array ( 'kind' => 'help', 'value' => 'adduser' )))),
		2 => array ('kind' => 'fieldset', 'td' => array ('valign' => 'top'), 'legend' => _("Available users"), 'value' =>
		array ( 0 => array ( 0 => array ( 'kind' => 'select', 'name' => 'addusers[]', 'size' => '15', 'multiple', 'options' => $users))))
		))));

		$return[] = array ( 0 => array ( 'kind' => 'input', 'name' => 'toattributes' ,'type' => 'submit', 'value' => _('Back') ),
		1 => array ( 'kind' => 'text'),
		2 => array ('kind' => 'text'));
		return $return;
	}


	/** This function returns all ldap attributes
	* which are part of posixGroup and returns
	* also their values.
	*/
	function get_attributes() {
		$return = $this->attributes;
		$return['userPassword'] = $this->userPassword();
		return $return;
	}

	
	/**
	* Returns meta data that is interpreted by parent class
	*
	* @return array array with meta data
	*/
	function get_metaData() {
		$return = array();
		// manages group accounts
		$return["account_types"] = array("group");
		if ($this->get_scope() == "group") {
			// this is a base module
			$return["is_base"] = true;
			// LDAP filter
			$return["ldap_filter"] = array('or' => "(objectClass=posixGroup)");
		}
		// alias name
		$return["alias"] = _('Unix');
		// module dependencies
		$return['dependencies'] = array('depends' => array(), 'conflicts' => array('inetOrgPerson', 'account', 'sambaDomain'));
		// configuration options
		$return['config_options']['group'] = array(
		array(
		0 => array('kind' => 'text', 'text' => '<b>' . _('Minimum GID number') . " *: </b>"),
		1 => array('kind' => 'input', 'name' => 'posixGroup_minGID', 'type' => 'text', 'size' => '10', 'maxlength' => '255'),
		2 => array('kind' => 'text', 'value' => '&nbsp;'),
		3 => array('kind' => 'text', 'text' => '<b>' . _('Maximum GID number') . " *: </b>"),
		4 => array('kind' => 'input', 'name' => 'posixGroup_maxGID', 'type' => 'text', 'size' => '10', 'maxlength' => '255'),
		5 => array('kind' => 'help', 'value' => 'TODO'))
		);
		$return['config_options']['all'] = array(
		array(
		0 => array('kind' => 'text', 'text' => '<b>' . _("Password hash type") . ': &nbsp;</b>'),
		1 => array('kind' => 'select', 'name' => 'posixGroup_pwdHash', 'size' => '1',
		'options' => array("CRYPT", "SHA", "SSHA", "MD5", "SMD5", "PLAIN"), 'options_selected' => array('SSHA')),
		2 => array('kind' => 'text', 'value' => '&nbsp;'),
		3 => array('kind' => 'text', 'value' => '&nbsp;'),
		4 => array('kind' => 'text', 'value' => '&nbsp;'),
		5 => array('kind' => 'help', 'value' => 'TODO'))
		);
		// configuration descriptions
		$return['config_descriptions'] = array(
		'legend' => _("GID ranges for Unix groups"),
		'descriptions' => array(
		'posixGroup_minGID' => _("Minimum GID number for Unix groups"),
		'posixGroup_maxGID' => _("Maximum GID number for Unix groups"),
		'posixGroup_pwdHash' => _("Password hash type"),
		)
		);
		// configuration checks
		$return['config_checks']['group']['posixGroup_minGID'] = array(
			'type' => 'regex',
			'regex' => '^[0-9]+$',
			'required' => true,
			'required_message' => $this->errormessages['gidNumber'][5],
			'error_message' => $this->errormessages['gidNumber'][5]);
		$return['config_checks']['group']['posixGroup_maxGID'] = array(
			'type' => 'regex',
			'regex' => '^[0-9]+$',
			'required' => true,
			'required_message' => $this->errormessages['gidNumber'][6],
			'error_message' => $this->errormessages['gidNumber'][6]);
		$return['config_checks']['group']['cmpGID'] = array(
			'type' => 'int_greater',
			'cmp_name1' => 'posixGroup_maxGID',
			'cmp_name2' => 'posixGroup_minGID',
			'error_message' => $this->errormessages['gidNumber'][7]);
		// available PDF fields
		$return['PDF_fields'] = array(	'cn',
		'gidNumber',
		'memberUid',
		'description');
		// upload fields
		$return['upload_columns'] = array(
		array(
		'name' => 'posixGroup_cn',
		'description' => _('Group name'),
		'help' => 'TODO',
		'example' => _('adminstrators'),
		'required' => true
		),
		array(
		'name' => 'posixGroup_gid',
		'description' => _('GID number'),
		'help' => 'TODO',
		'example' => _('2034'),
		'required' => false
		),
		array(
		'name' => 'posixGroup_description',
		'description' => _('Group description'),
		'help' => 'TODO',
		'example' => _('Administrators group'),
		'required' => false
		),
		array(
		'name' => 'posixGroup_members',
		'description' => _('Group members'),
		'help' => 'TODO',
		'example' => _('user01,user02,user03'),
		'required' => false
		),
		array(
		'name' => 'posixGroup_password',
		'description' => _('Group password'),
		'help' => 'TODO',
		'example' => _('secret'),
		'required' => false
		)
		);
		// help Entries
		$return['help'] = array (	'cn'							=>	array ("ext" => "FALSE", "Headline" => _("Groupname"), "Text" => _("Group name of the group which should be created. Valid characters are: a-z,0-9, .-_. Lam does not allow a number as first character because groupadd also does not allow it. Lam does not allow capital letters A-Z because it can cause several problems. If groupname is already used groupname will be expanded with a number. The next free number will be used.")),
		'gidNumber'				=>	array ("ext" => "FALSE", "Headline" => _("GID number"), "Text" => _("If empty GID number will be generated automaticly depending on your configuration settings.")),
		'description'				=>	array ("ext" => "FALSE", "Headline" => _("Gecos"), "Text" => _("Group description. If left empty group name will be used.")),
		'adduser'					=>	array ("ext" => "FALSE", "Headline" => _("Group members"), "Text" => _("Users also being member of the current group."). ' '. _("Can be left empty.")),
		/*'userPassword'		=>	*/
		'userPassword_no'		=>	array ("ext" => "FALSE", "Headline" => _("Use no password"), "Text" => _("If checked no password will be used."))/*,*/
		/*'userPassword_lock'	=>	*/);

		return $return;
	}


	/*
	* (non-PHPDoc)
	* @see baseModule#get_pdfEntries
	*/
	function get_pdfEntries($account_type = "group") {
		return array(	'posixGroup_cn' => array('<block><key>' . _('Groupname') . '</key><value>' . $this->attributes['cn'][0] . '</value></block>'),
		'posixGroup_gidNumber' => array('<block><key>' . _('GID number') . '</key><value>' . $this->attributes['gidNumber'][0] . '</value></block>'),
		'posixGroup_memberUid' => array('<block><key>' . _('Group members') . '</key><value>' . $this->attributes['memberUid'][0] . '</value></block>'),
		'posixGroup_description' => array('<block><key>' . _('Description') . '</key><value>' . $this->attributes['description'][0] . '</value></block>'));
	}


	/** This functin will be called when the module will be loaded **/
	function init($base) {
		// call parent init
		parent::init($base);
		$this->changegids=false;
	}


	/* This function loads all attributes into the object
	* $attr is an array as it's retured from ldap_get_attributes
	*/
	function load_attributes($attr) {
		$this->load_ldap_attributes($attr);
		return 0;
	}


	/** this functin fills the error message array with messages
	**/
	function load_errorMessages() {
		$this->errormessages['userPassword'][0] = array('ERROR', _('Password'), _('Please enter the same password in both password-fields.'));
		$this->errormessages['userPassword'][1] = array('ERROR', _('Password'), _('Password contains invalid characters. Valid characters are: a-z, A-Z, 0-9 and #*,.;:_-+!$%&/|?{[()]}= !'));
		$this->errormessages['gidNumber'][0] = array('INFO', _('GID number'), _('GID number has changed. Please select checkbox to change GID number of users and hosts.'));
		$this->errormessages['gidNumber'][2] = array('WARN', _('ID-Number'), _('It is possible that this ID-number is reused. This can cause several problems because files with old permissions might still exist. To avoid this warning set maxUID to a higher value.'));
		$this->errormessages['gidNumber'][3] = array('ERROR', _('ID-Number'), _('No free ID-Number!'));
		$this->errormessages['gidNumber'][4] = array('ERROR', _('ID-Number'), _('ID is already in use'));
		$this->errormessages['gidNumber'][5] = array('ERROR', _('Minimum GID number'), _('Minimum GID number is invalid or empty!'));
		$this->errormessages['gidNumber'][6] = array('ERROR', _('Maximum GID number'), _('Maximum GID number is invalid or empty!'));
		$this->errormessages['gidNumber'][7] = array('ERROR', _('Maximum GID number'), _('Maximum GID number must be greater than minimum GID number!'));
		$this->errormessages['cn'][0] = array('WARN', _('Groupname'), _('You are using a capital letters. This can cause problems because windows isn\'t case-sensitive.'));
		$this->errormessages['cn'][1] = array('WARN', _('Groupname'), _('Groupname in use. Selected next free groupname.'));
		$this->errormessages['cn'][2] = array('ERROR', _('Groupname'), _('Groupname contains invalid characters. Valid characters are: a-z, A-Z, 0-9 and .-_ !'));
		} 


	/* This functions return true
	* if all needed settings are done
	*/
	function module_complete() {
		if (!$this->module_ready()) return false;
		if ($this->attributes['cn'][0] == '') return false;
		if ($this->attributes['gidNumber'][0] == '') return false;
		return true;
	}


	function module_ready() {
		return true;
	}


	/* This function returns a list of all html-pages in module
	* This is usefull for mass upload and pdf-files
	* because lam can walk trough all pages itself and do some
	* error checkings
	*/
	function pages() {
		return array('attributes', 'user');
	}


	/* Write variables into object and do some regexp checks
	*/
	function proccess_attributes($post, $profile=false) {
		// Load attributes
		$this->attributes['description'][0] = $post['description'];
		if ($post['userPassword_no']) $this->userPassword_no=true;
		else $this->userPassword_no=false;
		if ($post['userPassword_lock']) $this->userPassword_lock=true;
		else $this->userPassword_lock=false;
		If (!$profile) {
			if ($post['changegids']) $this->changegids=true;
			else $this->changegids=false;
			if ($post['genpass']) {
					$this->userPassword(genpasswd());
					$post['userPassword2'] = '';
				}
				else {
					if (isset($post['userPassword'])) {
						if ($post['userPassword'] != $post['userPassword2']) {
							$errors['userPassword'][] = $this->errormessages['userPassword'][0];
						}
						else $this->userPassword($post['userPassword']);
						if (!get_preg($this->userPassword(), 'password'))
							$errors['userPassword'][] = $this->errormessages['userPassword'][1];
					}
				}
			if ($this->attributes['gidNumber'][0]!=$post['gidNumber'] || ($this->errors['gidNumber'][0]='ERROR')) {
				// Check if GID is valid. If none value was entered, the next useable value will be inserted
				// load min and may uidNumber
				$minID = intval($this->moduleSettings['posixGroup_minGID'][0]);
				$maxID = intval($this->moduleSettings['posixGroup_maxGID'][0]);
				$dn_gids = $_SESSION['cache']->get_cache('gidNumber', 'posixGroup', '*');
				// get_cache will return an array ( dn1 => array(uidnumber1), dn2 => array(uidnumber2), ... )
				if(is_array($dn_gids)) {
					foreach ($dn_gids as $gid) $gids[] = $gid[0];
					sort ($gids, SORT_NUMERIC);
				}
				$this->attributes['gidNumber'][0]=$post['gidNumber'];
					if ($this->attributes['gidNumber'][0]=='') {
					// No id-number given
					if ($this->orig['gidNumber'][0]=='') {
						// new account -> we have to find a free id-number
						if (count($gids)!=0) {
							// There are some uids
							// Store highest id-number
							$id = $gids[count($gids)-1];
							// Return minimum allowed id-number if all found id-numbers are too low
							if ($id < $minID) $this->attributes['gidNumber'][0] = $minID;
							// Return higesht used id-number + 1 if it's still in valid range
							if ($id < $maxID) $this->attributes['gidNumber'][0] = $id+1;
							/* If this function is still running we have to fid a free id-number between
							* the used id-numbers
							*/
							$i = intval($minID);
							while (in_array($i, $gids)) $i++;
							if ($i>$maxID)
							$errors['gidNumber'][] = $this->errormessages['gidNumber'][3];
							else {
								$this->attributes['gidNumber'][0] = $i;
								$errors['gidNumber'][] = $this->errormessages['gidNumber'][2];
							}
						}
						else $this->attributes['gidNumber'][0] = $minID;
						// return minimum allowed id-number if no id-numbers are found
					}
					else $this->attributes['gidNumber'][0] = $this->orig['gidNumber'][0];
					// old account -> return id-number which has been used
				}
				else {
					// Check manual ID
					// id-number is out of valid range
					if ( ($this->attributes['gidNumber'][0]!=$post['gidNumber']) && ($this->attributes['gidNumber'][0] < $minID || $this->attributes['gidNumber'][0] > $maxID)) $errors['gidNumber'][] = array('ERROR', _('ID-Number'), sprintf(_('Please enter a value between %s and %s!'), $minID, $maxID));
					// $uids is allways an array but not if no entries were found
					if (is_array($gids)) {
						// id-number is in use and account is a new account
						if ((in_array($this->attributes['gidNumber'][0], $gids)) && $this->orig['gidNumber'][0]=='') $errors['gidNumber'][] = array('ERROR', _('ID-Number'), _('ID is already in use'));
						// id-number is in use, account is existing account and id-number is not used by itself
						if ((in_array($this->attributes['gidNumber'][0], $gids)) && $this->orig['gidNumber'][0]!='' && ($this->orig['gidNumber'][0] != $this->attributes['gidNumber'][0]) ) {
							$errors['gidNumber'][] = $this->errormessages['gidNumber'][4];
							$this->attributes['gidNumber'][0] = $this->orig['gidNumber'][0];
						}
					}
				}
			}
			if ($this->attributes['cn'][0]!=$post['cn'] || ($this->errors['cn'][0]='ERROR')) {
				$this->attributes['cn'][0] = $post['cn'];
				if (($this->attributes['cn'][0] != $post['cn']) &&  ereg('[A-Z]$', $post['cn']))
				$errors['cn'][] = $this->errormessages['cn'][0];
				// Check if Groupname contains only valid characters
				if ( !get_preg($this->attributes['cn'][0],'groupname'))
				$errors['cn'][] = $this->errormessages['cn'][2];
				// Create automatic useraccount with number if original user already exists
				// Reset name to original name if new name is in use
				// Set username back to original name if new username is in use
				if ($_SESSION['cache']->in_cache($this->attributes['cn'][0],'cn', '*')!=false && ($this->orig['cn'][0]!='')) {
					$this->attributes['cn'][0] = $this->orig['cn'][0];
				}
				// Change gid to a new gid until a free gid is found
				else while ($_SESSION['cache']->in_cache($this->attributes['cn'][0], 'cn', '*')) {
					// get last character of username
					$lastchar = substr($this->attributes['cn'][0], strlen($this->attributes['cn'][0])-1, 1);
					// Last character is no number
					if ( !ereg('^([0-9])+$', $lastchar))
					/* Last character is no number. Therefore we only have to
					* add "2" to it.
					*/
					$this->attributes['cn'][0] = $this->attributes['cn'][0] . '2';
					else {
						/* Last character is a number -> we have to increase the number until we've
						* found a groupname with trailing number which is not in use.
						*
						* $i will show us were we have to split groupname so we get a part
						* with the groupname and a part with the trailing number
						*/
						$i=strlen($this->attributes['cn'][0])-1;
						$mark = false;
						// Set $i to the last character which is a number in $account_new->general_username
						while (!$mark) {
							if (ereg('^([0-9])+$',substr($this->attributes['cn'][0], $i, strlen($this->attributes['cn'][0])-$i))) $i--;
							else $mark=true;
						}
						// increase last number with one
						$firstchars = substr($this->attributes['cn'][0], 0, $i+1);
						$lastchars = substr($this->attributes['cn'][0], $i+1, strlen($this->attributes['cn'][0])-$i);
						// Put username together
						$this->attributes['cn'][0] = $firstchars . (intval($lastchars)+1);
					}
				}
				// Show warning if lam has changed username
				if ($this->attributes['cn'][0] != $post['cn']) {
					$errors['cn'][] = $this->errormessages['cn'][0];
				}
			// show info when gidnumber has changed
			if (($this->orig['gidNumber'][0]!=$this->attributes['gidNumber'][0]) && $this->orig['gidNumber'][0]!='' && $post['gidNumber']!=$this->attributes['gidNumber'][0])
			$errors['gidNumber'][] = $this->errormessages['gidNumber'][0];
			}
		}
		// Return error-messages
		if (count($errors)!=0) {
			$this->errors = $errors;
			return $errors;
		}
		else $this->errors = array();
		// Go to additional group page when no error did ocour and button was pressed
		if ($post['adduser'])  return 'user';
		return 0;
	}


	/* Write variables into object and do some regexp checks
	*/
	function proccess_user($post, $profile=false) {
		do { // X-Or, only one if() can be true
		if (isset($post['addusers']) && isset($post['addusers_button'])) { // Add groups to list
		// Add new user
		$this->attributes['memberUid'] = @array_merge($this->attributes['memberUid'], $post['addusers']);
		// remove doubles
		$this->attributes['memberUid'] = @array_flip($this->attributes['memberUid']);
		array_unique($this->attributes['memberUid']);
		$this->attributes['memberUid'] = @array_flip($this->attributes['memberUid']);
		// sort groups
		sort($this->attributes['memberUid']);
		break;
		}
		if (isset($post['removeusers']) && isset($post['removeusers_button'])) { // remove groups from list
		$this->attributes['memberUid'] = array_delete($post['removeusers'], $this->attributes['memberUid']);
		break;
		}
		} while(0);
		if (isset($post['adduser_button']) || isset($post['removeuser_button'])) return 'user';
		if ($post['toattributes']) return 'attributes';
		return 0;
	}


	/* This function returns an array with 3 entries:
	* array( DN1 ('add' => array($attr), 'remove' => array($attr), 'modify' => array($attr)), DN2 .... )
	* DN is the DN to change. It may be possible to change several DNs,
	* e.g. create a new user and add him to some groups via attribute memberUid
	* add are attributes which have to be added to ldap entry
	* remove are attributes which have to be removed from ldap entry
	* modify are attributes which have to been modified in ldap entry
	*/
	function save_attributes() {
		$return = $_SESSION[$this->base]->save_module_attributes($this->attributes, $this->orig);
		if (isset($return[$_SESSION[$this->base]->dn]['modify']['userPassword']))
		unset($return[$_SESSION[$this->base]->dn]['modify']['userPassword']);
		// Set unix password
		if (count($this->orig['userPassword'])==0) {
			// New user or no old password set
			if ($this->userPassword_no) {
				$return[$_SESSION[$this->base]->dn]['modify']['userPassword'][0] = pwd_hash('', !$this->userPassword_lock, $this->moduleSettings['posixGroup_pwdHash'][0]);
			}
			else $return[$_SESSION[$this->base]->dn]['modify']['userPassword'][0] = utf8_encode(pwd_hash($this->userPassword(), !$this->userPassword_lock, $this->moduleSettings['posixGroup_pwdHash'][0]));
		}
		else {
			if (($this->attributes['userPassword'][0] != $this->orig['userPassword'][0] && $this->userPassword()!='' ) || $this->userPassword_no) {
				// Write new password
				if ($this->userPassword_no) $return[$_SESSION[$this->base]->dn]['modify']['userPassword'][0] = pwd_hash('', !$this->userPassword_lock, $this->moduleSettings['posixGroup_pwdHash'][0]);
				else $return[$_SESSION[$this->base]->dn]['modify']['userPassword'][0] = utf8_encode(pwd_hash($this->userPassword(), !$this->userPassword_lock, $this->moduleSettings['posixGroup_pwdHash'][0]));
			}
			else { // No new password but old password
			// (un)lock password
			if ($this->userPassword_lock == pwd_is_enabled($this->orig['userPassword'][0])) {
				// Split old password hash in {CRYPT} and password-hash
				$i = 0;
				while ($this->orig['userPassword'][0]{$i} != '}') $i++;
				$passwd = substr($this->orig['userPassword'][0], $i+1 );
				$crypt = substr($this->orig['userPassword'][0], 0, $i+1 );
				// remove trailing ! from password hash
				if ($passwd{0} == '!') $passwd = substr($passwd, 1);
				// Write new password
				if ($this->userPassword_lock) $return[$_SESSION[$this->base]->dn]['modify']['userPassword'][0] = utf8_encode("$crypt!$passwd");
				else $return[$_SESSION[$this->base]->dn]['modify']['userPassword'][0] = utf8_encode("$crypt$passwd");
			}
			}
		}

		// Remove primary group from users from memberUid
		$users_dn = $_SESSION['cache']->get_cache('gidNumber', 'posixAccount', 'user');
		if (is_array($users_dn)) {
			$DNs = array_keys($users_dn);
			for ($i=0; $i<count($DNs); $i++) {
				if ($users_dn[$DNs[$i]][0]==$this->attributes['gidNumber'][0]) {
					$thisuser = substr($DNs[$i], 4, strpos($DNs[$i], ",")-4);
					if (@in_array($thisuser, $this->attribtues['memberUid'])) {
						$this->attribtues['memberUid'] = @array_flip($this->attribtues['memberUid']);
						unset($this->attribtues['memberUid'][$thisuser]);
						$this->attribtues['memberUid'] = @array_flip($this->attribtues['memberUid']);
					}
				}
			}
		}


		// Change gids of users and hosts?
		if ($this->changegids) {
			// get gidNumber
			$line=-1;
			for ($i=0; $i<count($_SESSION['ldap']->objectClasses) || $i==-1; $i++) {
				if (strpos($_SESSION['ldap']->objectClasses[$i], "NAME 'posixAccount'")) $line = $i;
			}
			if ($line!=-1) {
				$result = $_SESSION['cache']->get_cache('gidNumber', 'posixAccount', '*');
				if (is_array($result)) {
					$DNs = array_keys($result);
					for ($i=0; $i<count($DNs); $i++)
					if ($result[$DNs[$i]][0] == $this->orig['gidNumber'][0]) $return[$DNs[$i]]['modify']['gidNumber'][0] = $this->attributes['gidNumber'][0];
				}
			}
			// change primaryGroupID
			$line=-1;
			for ($i=0; $i<count($_SESSION['ldap']->objectClasses) || $i==-1; $i++) {
				if (strpos($_SESSION['ldap']->objectClasses[$i], "NAME 'sambaAccount'")) $line = $i;
			}
			if ($line!=-1) {
				$result = $_SESSION['cache']->get_cache('primaryGroupID', 'sambaAccount', '*');
				if (is_array($result)) {
					$DNs = array_keys($result);
					for ($i=0; $i<count($DNs); $i++) {
						if ($result[$DNs[$i]][0] == $this->orig['gidNumber'][0]*2+1001 ) $return[$DNs[$i]]['modify']['PrimaryGroupID'][0] = $this->attributes['gidNumber'][0]*2+1001;
					}
				}
			}
			// change sambaPrimaryGroupSID
			$line=-1;
			for ($i=0; $i<count($_SESSION['ldap']->objectClasses) || $i==-1; $i++) {
				if (strpos($_SESSION['ldap']->objectClasses[$i], "NAME 'sambaSamAccount'")) $line = $i;
			}
			if ($line!=-1) {
				$result = $_SESSION['cache']->get_cache('sambaPrimaryGroupSID', 'sambaSamAccount', '*');
				if (is_array($result)) {
					$DNs = array_keys($result);
					for ($i=0; $i<count($DNs); $i++) {
						// Get Domain SID from name
						$sambaDomains = search_domains($_SESSION['config']->get_domainSuffix());
						// Get Domain-SID from group SID
						$domainSID = substr($result[$DNs[$i]], 0, strrpos($result[$DNs[$i]], "-"));
						for ($i=0; $i<count($sambaDomains); $i++ )
						if ($domainSID==$sambaDomains[$i]->SID)
						$RIDbase = $sambaDomains[$i]->RIDbase;
						if ($result[$DNs[$i]][0] == $SID . "-" . $this->orig['gidNumber'][0]*2+1+$RIDbase ) $return[$DNs[$i]]['modify']['sambaPrimaryGroupSID'][0] = $SID . "-" . $this->attributes['gidNumber'][0]*2+1+$RIDbase;
					}
				}
			}
		}
		return $return;
	}


	/** $attribute['userPassword'] can't accessed directly because it's enrcypted
	* To read / write password function userPassword is needed
	* This function will return the unencrypted password when
	* called without a variable
	* If it's called with a new password, the
	* new password will be stored encrypted
	*/
	function userPassword($newpassword=false) {
		if (is_string($newpassword)) {
			// Write new password
			$this->attributes['userPassword'][0] = base64_encode($_SESSION['ldap']->encrypt($newpassword));
			return 0;
		}
		else {
			if ($this->attributes['userPassword'][0]!='') {
				// Read existing password if set
				return $_SESSION['ldap']->decrypt(base64_decode($this->attributes['userPassword'][0]));
			}
			else return '';
		}
	}
}

?>