<?php
use \LAM\PDF\PDFTable;
use \LAM\PDF\PDFTableCell;
use \LAM\PDF\PDFTableRow;
use LAM\REMOTE\RemoteServerConfiguration;

/*

  This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
  Copyright (C) 2003 - 2006  Tilo Lutz
                2007 - 2021  Roland Gruber

  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
*/


/**
* Manages quotas for users and groups.
*
* @package modules
*
* @author Tilo Lutz
* @author Roland Gruber
* @author Michael Duergner
*/

/**
* Manages quotas for users and groups.
*
* @package modules
*/
class quota extends baseModule {

	/** delimiter for lamdaemon commands */
	private static $SPLIT_DELIMITER = "###x##y##x###";
	/** prefix for lamdaemon results */
	private static $QUOTA_PREFIX = 'QUOTA_ENTRY ';

	/** this function fills the error message array with messages
	**/
	function load_Messages() {
		// error messages for input checks
		$this->messages['softblock'][0] = array('ERROR', _('Block soft quota'), _('Block soft quota contains invalid characters. Only natural numbers are allowed.'));
		$this->messages['softblock'][1] = array('ERROR', _('Account %s:') . ' %s', _('Block soft quota contains invalid characters. Only natural numbers are allowed.'));
		$this->messages['hardblock'][0] = array('ERROR', _('Block hard quota'), _('Block hard quota contains invalid characters. Only natural numbers are allowed.'));
		$this->messages['hardblock'][1] = array('ERROR', _('Account %s:') . ' %s', _('Block hard quota contains invalid characters. Only natural numbers are allowed.'));
		$this->messages['softinode'][0] = array('ERROR', _('Inode soft quota'), _('Inode soft quota contains invalid characters. Only natural numbers are allowed.'));
		$this->messages['softinode'][1] = array('ERROR', _('Account %s:') . ' %s', _('Inode soft quota contains invalid characters. Only natural numbers are allowed.'));
		$this->messages['hardinode'][0] = array('ERROR', _('Inode hard quota'), _('Inode hard quota contains invalid characters. Only natural numbers are allowed.'));
		$this->messages['hardinode'][1] = array('ERROR', _('Account %s:') . ' %s', _('Inode hard quota contains invalid characters. Only natural numbers are allowed.'));
		$this->messages['block_cmp'][0] = array('ERROR', _('Block quota'), _('Block soft quota must be smaller than block hard quota.'));
		$this->messages['block_cmp'][1] = array('ERROR', _('Account %s:') . ' %s', _('Block soft quota must be smaller than block hard quota.'));
		$this->messages['inode_cmp'][0] = array('ERROR', _('Inode quota'), _('Inode soft quota must be smaller than inode hard quota.'));
		$this->messages['inode_cmp'][1] = array('ERROR', _('Account %s:') . ' %s', _('Inode soft quota must be smaller than inode hard quota.'));
		$this->messages['upload'][0] = array('ERROR', _('Account %s:') . ' %s', _('Quota has wrong format!'));
	}

	/**
	* Returns true if this module can manage accounts of the current type, otherwise false.
	*
	* @return boolean true if module fits
	*/
	public function can_manage() {
		return in_array($this->get_scope(), array('user', 'group'));
	}

	/**
	* Returns meta data that is interpreted by parent class
	*
	* @return array array with meta data
	*
	* @see baseModule::get_metaData()
	*/
	function get_metaData() {
		$return = array();
		// icon
		$return['icon'] = 'hard-driveBig.png';
		// alias name
		$return["alias"] = _('Quota');
		if ($this->get_scope() == 'group') {
			// module dependencies
			$return['dependencies'] = array('depends' => array(array('posixGroup', 'rfc2307bisPosixGroup', 'windowsPosixGroup')), 'conflicts' => array());
		}
		if ($this->get_scope() == 'user') {
			// module dependencies
			$return['dependencies'] = array('depends' => array('posixAccount'), 'conflicts' => array());
		}
		// managed attributes
		$return['attributes'] = array('uid', 'cn');
		// available PDF fields
		$return['PDF_fields'] =  array(
			'quotas' => _('Quota')
		);
		// help entries
		$numbersHelp = _('Symbols K, M, G and T can be appended to numeric value to express kibibytes, mebibytes, gibibytes and tebibytes for blocks.')
		. _(' Symbols k, m, g and t can be appended to numeric value to express multiples of 10^3, 10^6, 10^9 and 10^12 inodes.');
		$return['help'] = array(
			"Mountpoint" => array(
				"Headline" => _("Mountpoint"),
				"Text" => _("Mountpoint of device with enabled quotas.")
			),
			"UsedBlocks" => array(
				"Headline" => _("Used blocks"),
				"Text" => _("Used blocks. 1000 blocks are usually 1MB")
			),
			"SoftBlockLimit" => array(
				"Headline" => _("Soft block limit"),
				"Text" => _("Soft block limit.") . '<br>' . $numbersHelp, "SeeAlso" => array(
					'link' => 'http://www.ibiblio.org/pub/Linux/docs/HOWTO/other-formats/html_single/Quota.html#ss4.4',
					'text' => 'Quota How-To')
			),
			"HardBlockLimit" => array(
				"Headline" => _("Hard block limit"),
				"Text" => _("Hard block limit") . '<br>' . $numbersHelp, "SeeAlso" => array(
					'link' => 'http://www.ibiblio.org/pub/Linux/docs/HOWTO/other-formats/html_single/Quota.html#ss4.5',
					'text' => 'Quota How-To')
			),
			"GraceBlockPeriod" => array(
				"Headline" => _("Grace block period"),
				"Text" => _("Grace block period. Most filesystems use a fixed maximum value of 7 days."), "SeeAlso" => array(
					'link' => 'http://www.ibiblio.org/pub/Linux/docs/HOWTO/other-formats/html_single/Quota.html#ss4.6',
					'text' => 'Quota How-To')
			),
			"UsedInodes" => array(
				"Headline" => _("Used inodes"),
				"Text" => _("Used inodes (files)").'.'
			),
			"SoftInodeLimit" => array(
				"Headline" => _("Soft inode limit"),
				"Text" => _("Soft inode (files) limit.") . '<br>' . $numbersHelp, "SeeAlso" => array(
					'link' => 'http://www.ibiblio.org/pub/Linux/docs/HOWTO/other-formats/html_single/Quota.html#ss4.4',
					'text' => 'Quota How-To')
			),
			"HardInodeLimit" => array(
				"Headline" => _("Hard inode limit"),
				"Text" => _("Hard inode (files) limit") . '<br>' . $numbersHelp, "SeeAlso" => array(
					'link' => 'http://www.ibiblio.org/pub/Linux/docs/HOWTO/other-formats/html_single/Quota.html#ss4.5',
					'text' => 'Quota How-To')
			),
			"GraceInodePeriod" => array(
				"Headline" => _("Grace inode period"),
				"Text" => _("Grace inode (files) period. Most filesystems use a fixed maximum value of 7 days."), "SeeAlso" => array(
					'link' => 'http://www.ibiblio.org/pub/Linux/docs/HOWTO/other-formats/html_single/Quota.html#ss4.6',
					'text' => 'Quota How-To')
			),
			"upload" => array(
				"Headline" => _("Quota"),
				"Text" => _("Please enter the quota settings for this mount point. The syntax is: {soft block limit},{hard block limit},{soft inode limit},{hard inode limit}")
			)
		);
		// self service field settings
		$return['selfServiceFieldSettings'] = array('quota' => _('Quota (read-only)'));
		return $return;
	}

	/** Saves the quota settings */
	private $quota;

	/**
	 * Initializes the quota values.
	 *
	 * @param string $userName user/group name
	 * @param RemoteServerConfiguration[] $lamdaemonServers server configurations
	 */
	function initQuotas($userName = null, $lamdaemonServers = null) {
		if (isset($this->quota)) {
			return;
		}
		if ($userName === null) {
			$userName = '+';
			if (($this->getAccountContainer() != null) && !$this->getAccountContainer()->isNewAccount) {
				if ($this->get_scope() == 'user') {
					if (!isset($this->attributes['uid'][0])) {
						return;
					}
					$userName = $this->attributes['uid'][0];
				}
				else if ($this->get_scope() == 'group') {
					if (!isset($this->attributes['cn'][0])) {
						return;
					}
					$userName = $this->attributes['cn'][0];
				}
			}
		}
		// get list of lamdaemon servers
		if ($lamdaemonServers === null) {
			$lamdaemonServers = $_SESSION['config']->getConfiguredScriptServers();
		}
		foreach ($lamdaemonServers as $lamdaemonServer) {
			$server = $lamdaemonServer->getServer();
			// get quotas
			$remote = new \LAM\REMOTE\Remote();
			try {
				$remote->connect($lamdaemonServer);
			}
			catch (LAMException $e) {
				logNewMessage(LOG_ERR, $e->getMessage() . ' ' . $e->getTitle());
				continue;
			}
			$quotas = $remote->execute(implode(self::$SPLIT_DELIMITER, array($userName, "quota", "get", $this->get_scope())));
			$remote->disconnect();
			if (empty($quotas)) {
				continue;
			}
			$allQuotas = explode(":", $quotas);
			array_pop($allQuotas); // remove empty element at the end
			for ($i = 0; $i < sizeof($allQuotas); $i++) {
				if (strpos($allQuotas[$i], self::$QUOTA_PREFIX) !== 0) {
					continue;
				}
				$allQuotas[$i] = substr($allQuotas[$i], strlen(self::$QUOTA_PREFIX));
				$singleQuota = explode(",", $allQuotas[$i]);
				$singleQuota[1] = $this->formatBlockUsage($singleQuota[1]);
				$singleQuota[2] = $this->addBlockUnits($singleQuota[2]);
				$singleQuota[3] = $this->addBlockUnits($singleQuota[3]);
				$singleQuota[5] = $this->formatInodeUsage($singleQuota[5]);
				$singleQuota[6] = $this->addInodeUnits($singleQuota[6]);
				$singleQuota[7] = $this->addInodeUnits($singleQuota[7]);
				$this->quota[$server][$i] = $singleQuota;
				if ($this->quota[$server][$i][4] < time()) {
					$this->quota[$server][$i][4] = '';
				}
				else {
					$this->quota[$server][$i][4] = strval(intval(($this->quota[$server][$i][4] - time())/3600)) .' '. _('hours');
				}
				if ($this->quota[$server][$i][8] < time()) {
					$this->quota[$server][$i][8] = '';
				}
				else {
					$this->quota[$server][$i][8] = strval(intval(($this->quota[$server][$i][8] - time())/3600)) .' '. _('hours');
				}
			}
		}
	}

	/**
	 * Adds units (M/G/T) for block numbers.
	 *
	 * @param int $value raw value
	 * @return string value with unit
	 */
	public function addBlockUnits($value) {
		$mebibytes = 1024;
		$gibibytes = 1024 * $mebibytes;
		$tebibytes = 1024 * $gibibytes;
		if (empty($value) || !get_preg($value, 'digit') || ($value < $mebibytes)) {
			return $value;
		}
		if (($value >= $tebibytes) && (($value % $tebibytes) === 0)) {
			return ($value / $tebibytes) . 'T';
		}
		if (($value >= $gibibytes) && (($value % $gibibytes) === 0)) {
			return ($value / $gibibytes) . 'G';
		}
		if (($value >= $mebibytes) && (($value % $mebibytes) === 0)) {
			return ($value / $mebibytes) . 'M';
		}
		return $value;
	}

	/**
	 * Formats block usage.
	 *
	 * @param int $value raw value
	 */
	public function formatBlockUsage($value) {
		$mebibytes = 1024;
		$gibibytes = 1024 * $mebibytes;
		$tebibytes = 1024 * $gibibytes;
		if (empty($value) || !get_preg($value, 'digit') || ($value < $mebibytes)) {
			return $value;
		}
		if ($value >= $tebibytes) {
			return round($value / $tebibytes, 2) . 'T';
		}
		if ($value >= $gibibytes) {
			return round($value / $gibibytes, 2) . 'G';
		}
		if ($value >= $mebibytes) {
			return round($value / $mebibytes, 2) . 'M';
		}
		return $value;
	}

	/**
	 * Adds units (m/g/t) for inode numbers.
	 *
	 * @param int $value raw value
	 * @return string value with unit
	 */
	public function addInodeUnits($value) {
		$kilo = 1000;
		$million = 1000 * $kilo;
		$billion = 1000 * $million;
		$trillion = 1000 * $billion;
		if (empty($value) || !get_preg($value, 'digit')) {
			return $value;
		}
		if (($value >= $trillion) && (($value % $trillion) === 0)) {
			return ($value / $trillion) . 't';
		}
		if (($value >= $billion) && (($value % $billion) === 0)) {
			return ($value / $billion) . 'g';
		}
		if (($value >= $million) && (($value % $million) === 0)) {
			return ($value / $million) . 'm';
		}
		if (($value >= $kilo) && (($value % $kilo) === 0)) {
			return ($value / $kilo) . 'k';
		}
		return $value;
	}

	/**
	 * Formats the inode usage.
	 *
	 * @param int $value raw value
	 * @return string value with unit
	 */
	public function formatInodeUsage($value) {
		$kilo = 1000;
		$million = 1000 * $kilo;
		$billion = 1000 * $million;
		$trillion = 1000 * $billion;
		if (empty($value) || !get_preg($value, 'digit')) {
			return $value;
		}
		if ($value >= $trillion) {
			return round($value / $trillion, 2) . 't';
		}
		if ($value >= $billion) {
			return round($value / $billion, 2) . 'g';
		}
		if ($value >= $million) {
			return round($value / $million, 2) . 'm';
		}
		if ($value >= $kilo) {
			return round($value / $kilo, 2) . 'k';
		}
		return $value;
	}

	/**
	 * Gets the cn from the Unix group module.
	 *
	 * @return String cn attribute
	 */
	private function getCn() {
		$modules = array('posixGroup', 'windowsPosixGroup', 'rfc2307bisPosixGroup', 'groupOfNames', 'groupOfUniqueNames', 'windowsGroup');
		for ($i = 0; $i < sizeof($modules); $i++) {
			if ($this->getAccountContainer()->getAccountModule($modules[$i]) != null) {
				$attrs = $this->getAccountContainer()->getAccountModule($modules[$i])->getAttributes();
				if (isset($attrs['cn'][0])) {
					return $attrs['cn'][0];
				}
			}
		}
		return null;
	}

	/**
	* This function is used to check if this module page can be displayed.
	* It returns false if a module depends on data from other modules which was not yet entered.
	*
	* @return boolean true, if page can be displayed
	*/
	function module_ready() {
		if ($this->get_scope()=='user') {
			$attrs = $this->getAccountContainer()->getAccountModule('posixAccount')->getAttributes();
			if (empty($attrs['uid'][0])) {
				return false;
			}
		}
		return ($this->get_scope() != 'group') || !empty($this->getCn());
	}

	/**
	 * Quotas are set in postmodify.
	 *
	 * @see baseModule::postModifyActions()
	 *
	 * @param boolean $newAccount is new account
	 * @param array $attributes LDAP attributes of this entry
	 * @return array array which contains status messages. Each entry is an array containing the status message parameters.
	 */
	public function postModifyActions($newAccount, $attributes) {
		$messages = array();
		if (!isset($this->quota) || !is_array($this->quota)) {
			return $messages;
		}
		// determine if this is a user or group account
		if ($this->get_scope()=='user') {
			$attrs = $this->getAccountContainer()->getAccountModule('posixAccount')->getAttributes();
			$id = $attrs['uid'][0];
		}
		if ($this->get_scope()=='group') {
			$id = $this->getCn();
		}
		// get list of lamdaemon servers
		$servers = array_keys($this->quota);
		for ($q = 0; $q < sizeof($servers); $q++) {
			$server = $servers[$q];
			$i=0;
			$quotastring = "";
			for ($i = 0; $i < sizeof($this->quota[$server]); $i++) {
				$quotastring .= $this->quota[$server][$i][0];
				$quotastring .= ',' . $this->getQuotaNumber($this->quota[$server][$i][2]);
				$quotastring .= ',' . $this->getQuotaNumber($this->quota[$server][$i][3]);
				$quotastring .= ',' . $this->getQuotaNumber($this->quota[$server][$i][6]);
				$quotastring .= ',' . $this->getQuotaNumber($this->quota[$server][$i][7]) . ':';
			}
			$remote = new \LAM\REMOTE\Remote();
			$remoteServer = $_SESSION['config']->getScriptServerByName($server);
			try {
				$remote->connect($remoteServer);
			}
			catch (LAMException $e) {
				$messages[] = array('ERROR', $e->getTitle(), $e->getMessage());
				continue;
			}
			$output = $remote->execute(implode(self::$SPLIT_DELIMITER, array($id, "quota", "set", $this->get_scope(), "$quotastring\n")));
			if (strpos($output, 'ERROR,') === 0) {
				$messages[] = array('ERROR', $server, _('Unable to set quota.'));
			}
			$remote->disconnect();
		}
		return $messages;
	}

	/**
	 * Returns the quota value as plain number.
	 *
	 * @param string $quotaInput quota value (might contain e.g. "K" for KB)
	 * @return int quota number
	 */
	public function getQuotaNumber($quotaInput) {
		if (empty($quotaInput) || (strlen($quotaInput) < 2)) {
			return $quotaInput;
		}
		if (substr($quotaInput, -1, 1) === 'K') {
			return substr($quotaInput, 0, -1);
		}
		if (substr($quotaInput, -1, 1) === 'M') {
			return 1024 * substr($quotaInput, 0, -1);
		}
		if (substr($quotaInput, -1, 1) === 'G') {
			return 1024 * 1024 * substr($quotaInput, 0, -1);
		}
		if (substr($quotaInput, -1, 1) === 'T') {
			return 1024 * 1024 * 1024 * substr($quotaInput, 0, -1);
		}
		if (substr($quotaInput, -1, 1) === 'k') {
			return 1000 * substr($quotaInput, 0, -1);
		}
		if (substr($quotaInput, -1, 1) === 'm') {
			return 1000 * 1000 * substr($quotaInput, 0, -1);
		}
		if (substr($quotaInput, -1, 1) === 'g') {
			return 1000 * 1000 * 1000 * substr($quotaInput, 0, -1);
		}
		if (substr($quotaInput, -1, 1) === 't') {
			return 1000 * 1000 * 1000 * 1000 * substr($quotaInput, 0, -1);
		}
		return $quotaInput;
	}

	/**
	 * Allows the module to run commands before the LDAP entry is deleted.
	 *
	 * @return array Array which contains status messages. Each entry is an array containing the status message parameters.
	 */
	function preDeleteActions() {
		try {
			$this->initQuotas();
		}
		catch (LAMException $e) {
			return array(array('ERROR', $e->getTitle(), $e->getMessage()));
		}
		if (!isset($this->quota) || !is_array($this->quota)) {
			return array();
		}
		// determine if this is a user or group account
		if ($this->get_scope()=='user') {
			$attrs = $this->getAccountContainer()->getAccountModule('posixAccount')->getAttributes();
			$id = $attrs['uid'][0];
		}
		if ($this->get_scope()=='group') {
			$id = $this->getCn();
		}
		$messages = array();
		// get list of lamdaemon servers
		$servers = array_keys($this->quota);
		for ($q = 0; $q < sizeof($servers); $q++) {
			$server = $servers[$q];
			$i=0;
			$quotastring = "";
			while (isset($this->quota[$server][$i][0])) {
				$quotastring = $quotastring . $this->quota[$server][$i][0] . ',0,0,0,0:';
				$i++;
				}
			$remote = new \LAM\REMOTE\Remote();
			$remoteServer = $_SESSION['config']->getScriptServerByName($server);
			try {
				$remote->connect($remoteServer);
			}
			catch (LAMException $e) {
				$messages[] = array('ERROR', $e->getTitle(), $e->getMessage());
				continue;
			}
			$remote->execute(implode(self::$SPLIT_DELIMITER, array($id, "quota", "set", $this->get_scope(), "$quotastring\n")));
			$remote->disconnect();
		}
		return $messages;
	}

	/**
	* Processes user input of the primary module page.
	* It checks if all input values are correct and updates the associated LDAP attributes.
	*
	* @return array list of info/error messages
	*/
	function process_attributes() {
		if (!isset($this->quota) || !is_array($this->quota)) {
			return array();
		}
		$errors = array();
		// get list of lamdaemon servers
		$servers = array_keys($this->quota);
		for ($q = 0; $q < sizeof($servers); $q++) {
			$server = $servers[$q];
			$id = $this->replaceSpecialChars($server);
			$i=0;
			// loop for every mointpoint with quotas
			while (isset($this->quota[$server][$i][0])) {
				$this->quota[$server][$i][2] = $_POST[$i . '_2_' . $id];
				$this->quota[$server][$i][3] = $_POST[$i . '_3_' . $id];
				$this->quota[$server][$i][6] = $_POST[$i . '_6_' . $id];
				$this->quota[$server][$i][7] = $_POST[$i . '_7_' . $id];
				// Check if values are OK and set automatic values. if not error-variable will be set
				if (!get_preg($this->quota[$server][$i][2], 'quotaNumber')) {
					$errors[] = $this->messages['softblock'][0];
				}
				if (!get_preg($this->quota[$server][$i][3], 'quotaNumber')) {
					$errors[] = $this->messages['hardblock'][0];
				}
				if (!get_preg($this->quota[$server][$i][6], 'quotaNumber')) {
					$errors[] = $this->messages['softinode'][0];
				}
				if (!get_preg($this->quota[$server][$i][7], 'quotaNumber')) {
					$errors[] = $this->messages['hardinode'][0];
				}
				if ($this->getQuotaNumber($this->quota[$server][$i][2]) > $this->getQuotaNumber($this->quota[$server][$i][3])) {
					$errors[] = $this->messages['block_cmp'][0];
				}
				if ($this->getQuotaNumber($this->quota[$server][$i][6]) > $this->getQuotaNumber($this->quota[$server][$i][7])) {
					$errors[] = $this->messages['inode_cmp'][0];
				}
				$i++;
			}
		}
		return $errors;
	}

	/**
	 * Returns the HTML meta data for the main account page.
	 *
	 * @return htmlElement HTML meta data
	 */
	function display_html_attributes() {
		$return = new htmlResponsiveRow();
		$return->setCSSClasses(array('maxrow'));
		try {
			$this->initQuotas();
		}
		catch (LAMException $e) {
			$return->add(new htmlStatusMessage('ERROR', $e->getTitle(), $e->getMessage()), 12);
			return $return;
		}
		if (!is_array($this->quota)) {
			return $return;
		}
		// get list of lamdaemon servers
		$serverDescriptions = array();
		$lamdaemonServers = $_SESSION['config']->getConfiguredScriptServers();
		for ($s = 0; $s < sizeof($lamdaemonServers); $s++) {
			$lamdaemonServer = $lamdaemonServers[$s];
			$serverDescriptions[$lamdaemonServer->getServer()] = $lamdaemonServer->getLabel();
		}
		$servers = array_keys($this->quota);
		for ($q = 0; $q < sizeof($servers); $q++) {
			$server = $servers[$q];
			$id = $this->replaceSpecialChars($server);
			$title = $server;
			if ($serverDescriptions[$server] != $server) {
				$title = $serverDescriptions[$server] . " (" . $server . ")";
			}
			$return->add(new htmlSubTitle($title), 12);

			$titles = array(
				_('Mountpoint'), _('Used blocks'), _('Soft block limit'), _('Hard block limit'), _('Grace block period'),
				_('Used inodes'), _('Soft inode limit'), _('Hard inode limit'), _('Grace inode period')
			);
			$data = array(
				array(
					new htmlHelpLink('Mountpoint'), new htmlHelpLink('UsedBlocks'), new htmlHelpLink('SoftBlockLimit'),
					new htmlHelpLink('HardBlockLimit'), new htmlHelpLink('GraceBlockPeriod'), new htmlHelpLink('UsedInodes'),
					new htmlHelpLink('SoftInodeLimit'), new htmlHelpLink('HardInodeLimit'), new htmlHelpLink('GraceInodePeriod')
				)
			);

			$i=0;
			// loop for every mointpoint with enabled quotas
			while (isset($this->quota[$server][$i][0])) {
				$dataRow = array();
				$dataRow[] = new htmlOutputText($this->quota[$server][$i][0]);
				$dataRow[] = new htmlOutputText($this->quota[$server][$i][1]);
				$sbLimitInput = new htmlInputField($i . '_2_' . $id, $this->quota[$server][$i][2]);
				$sbLimitInput->setFieldMaxLength(20);
				$dataRow[] = $sbLimitInput;
				$hbLimit = new htmlInputField($i . '_3_' . $id, $this->quota[$server][$i][3]);
				$hbLimit->setFieldMaxLength(20);
				$dataRow[] = $hbLimit;
				$dataRow[] = new htmlOutputText($this->quota[$server][$i][4]);
				$dataRow[] = new htmlOutputText($this->quota[$server][$i][5]);
				$siLimit = new htmlInputField($i . '_6_' . $id, $this->quota[$server][$i][6]);
				$siLimit->setFieldMaxLength(20);
				$dataRow[] = $siLimit;
				$hiLimit = new htmlInputField($i . '_7_' . $id, $this->quota[$server][$i][7]);
				$hiLimit->setFieldMaxLength(20);
				$dataRow[] = $hiLimit;
				$dataRow[] = new htmlOutputText($this->quota[$server][$i][8]);
				$data[] = $dataRow;
				$i++;
			}
			$table = new htmlResponsiveTable($titles, $data);
			$table->setWidths(array('20%', '5%', '10%', '10%', '5%', '5%', '10%', '10%', '5%'));
			$return->add($table, 12);
		}
		return $return;
	}

	/**
	 * Replaces special characters in HTML name values.
	 *
	 * @param string $input input string
	 * @return string output string
	 */
	function replaceSpecialChars($input) {
		return str_replace(".", "_", $input);
	}

	/**
	* {@inheritDoc}
	*/
	function get_profileOptions($typeId) {
		$return = new htmlResponsiveRow();
		$optionsAvailable = false;
		// get list of lamdaemon servers
		$lamdaemonServers = $_SESSION['config']->getConfiguredScriptServers();
		try {
			foreach ($lamdaemonServers as $lamdaemonServer) {
				$server = $lamdaemonServer->getServer();
				$id = $this->replaceSpecialChars($server);
				$description = $lamdaemonServer->getLabel();
				if ($description != $server) {
					$description = $description . ' (' . $server . ')';
				}
				// Get quotas
				$remote = new \LAM\REMOTE\Remote();
				$remote->connect($lamdaemonServer);
				$quotas = $remote->execute(implode(self::$SPLIT_DELIMITER, array("+", "quota", "get", $this->get_scope())));
				$remote->disconnect();
				if (empty($quotas)) {
					continue;
				}
				$dirs = explode(":", $quotas);
				array_pop($dirs); // remove empty element at the end
				if (empty($dirs)) {
					continue;
				}
				for ($i = 0; $i < sizeof($dirs); $i++) {
					if (strpos($dirs[$i], self::$QUOTA_PREFIX) !== 0) {
						unset($dirs[$i]);
						$dirs = array_values($dirs);
						$i--;
						continue;
					}
					$dirs[$i] = substr($dirs[$i], strlen(self::$QUOTA_PREFIX));
					$dirs[$i] = explode(",", $dirs[$i]);
					$dirs[$i] = $dirs[$i][0];
				}
				$dirs = array_values($dirs);
				if (sizeof($dirs) < 1) {
					continue; // stop if no quota directories were found
				}
				$optionsAvailable = true;
				$return->add(new htmlSubTitle($description), 12);
				for ($i = 0; $i < sizeof($dirs); $i++) {
					$return->add(new htmlOutputText($dirs[$i]), 12);
					$sbLimit = new htmlResponsiveInputField(_('Soft block limit'), "quota_softblock_" . $id . "_" . $dirs[$i], null, 'SoftBlockLimit');
					$sbLimit->setFieldMaxLength(20);
					$return->add($sbLimit, 12);
					$hbLimit = new htmlResponsiveInputField(_('Hard block limit'), "quota_hardblock_" . $id . "_" . $dirs[$i], null, 'HardBlockLimit');
					$hbLimit->setFieldMaxLength(20);
					$return->add($hbLimit, 12);
					$siLimit = new htmlResponsiveInputField(_('Soft inode limit'), "quota_softinode_" . $id . "_" . $dirs[$i], null, 'SoftInodeLimit');
					$siLimit->setFieldMaxLength(20);
					$return->add($siLimit, 12);
					$hiLimit = new htmlResponsiveInputField(_('Hard inode limit'), "quota_hardinode_" . $id . "_" . $dirs[$i], null, 'HardInodeLimit');
					$hiLimit->setFieldMaxLength(20);
					$return->add($hiLimit, 12);
				}
			}
		}
		catch (LAMException $e) {
			$return->add(new htmlStatusMessage('WARN', $e->getTitle()), 12);
			return $return;
		}
		if (!$optionsAvailable) {
			return null;
		}
		return $return;
	}

	/**
	* {@inheritDoc}
	*/
	function check_profileOptions($options, $typeId) {
		$return = array();
		// get list of lamdaemon servers
		$lamdaemonServers = $_SESSION['config']->getConfiguredScriptServers();
		foreach ($lamdaemonServers as $lamdaemonServer) {
			$server = $lamdaemonServer->getServer();
			$id = $this->replaceSpecialChars($server);
			// Get quotas
			$remote = new \LAM\REMOTE\Remote();
			try {
				$remote->connect($lamdaemonServer);
			}
			catch (LAMException $e) {
				$return[] = array('ERROR', $e->getTitle(), $e->getMessage());
				continue;
			}
			$quotas = $remote->execute(implode(self::$SPLIT_DELIMITER, array("+", "quota", "get", $this->get_scope())));
			$remote->disconnect();
			$dirs = explode(":", $quotas);
			array_pop($dirs); // remove empty element at the end
			if (empty($dirs)) {
				continue;
			}
			$quotaDirs = array();
			foreach ($dirs as $dirString) {
				if (strpos($dirString, self::$QUOTA_PREFIX) !== 0) {
					continue;
				}
				$dirData = explode(",", substr($dirString, strlen(self::$QUOTA_PREFIX)));
				$quotaDirs[] = $dirData[0];
			}
			foreach ($quotaDirs as $dirName) {
				if (!empty($options["quota_softblock_" . $id . "_" . $dirName][0]) && !get_preg($options["quota_softblock_" . $id . "_" . $dirName][0], 'quotaNumber')) {
					$return[] = $this->messages['softblock'][0];
				}
				if (!empty($options["quota_hardblock_" . $id . "_" . $dirName][0]) && !get_preg($options["quota_hardblock_" . $id . "_" . $dirName][0], 'quotaNumber')) {
					$return[] = $this->messages['hardblock'][0];
				}
				if (!empty($options["quota_softinode_" . $id . "_" . $dirName][0]) && !get_preg($options["quota_softinode_" . $id . "_" . $dirName][0], 'quotaNumber')) {
					$return[] = $this->messages['softinode'][0];
				}
				if (!empty($options["quota_hardinode_" . $id . "_" . $dirName][0]) && !get_preg($options["quota_hardinode_" . $id . "_" . $dirName][0], 'quotaNumber')) {
					$return[] = $this->messages['hardinode'][0];
				}
				if (!empty($options["quota_softblock_" . $id . "_" . $dirName][0])
					&& !empty($options["quota_hardblock_" . $id . "_" . $dirName][0])
					&& ($this->getQuotaNumber($options["quota_softblock_" . $id . "_" . $dirName][0]) > $this->getQuotaNumber($options["quota_hardblock_" . $id . "_" . $dirName][0]))) {
					$return[] = $this->messages['block_cmp'][0];
				}
				if (!empty($options["quota_softinode_" . $id . "_" . $dirName][0])
					&& !empty($options["quota_hardinode_" . $id . "_" . $dirName][0])
					&& ($this->getQuotaNumber($options["quota_softinode_" . $id . "_" . $dirName][0]) > $this->getQuotaNumber($options["quota_hardinode_" . $id . "_" . $dirName][0]))) {
					$return[] = $this->messages['inode_cmp'][0];
				}
			}
		}
		return $return;
	}

	/**
	* Loads the values of an account profile into internal variables.
	*
	* @param array $profile hash array with profile values (identifier => value)
	*/
	function load_profile($profile) {
		try {
			$this->initQuotas();
		}
		catch (LAMException $e) {
			logNewMessage(LOG_ERR, $e->getTitle(), $e->getMessage());
		}
		if (!isset($this->quota) || !is_array($this->quota)) {
			return;
		}
		$servers = array_keys($this->quota);
		for ($s = 0; $s < sizeof($servers); $s++) {
			$server = $servers[$s];
			$id = $this->replaceSpecialChars($server);
			for ($i = 0; $i < sizeof($this->quota[$server]); $i++) {
				$dir = $this->quota[$server][$i][0];
				if (isset($profile["quota_softblock_" . $id . "_" . $dir])) {
					$this->quota[$server][$i][2] = $profile["quota_softblock_" . $id . "_" . $dir][0];
				}
				if (isset($profile["quota_hardblock_" . $id . "_" . $dir])) {
					$this->quota[$server][$i][3] = $profile["quota_hardblock_" . $id . "_" . $dir][0];
				}
				if (isset($profile["quota_softinode_" . $id . "_" . $dir])) {
					$this->quota[$server][$i][6] = $profile["quota_softinode_" . $id . "_" . $dir][0];
				}
				if (isset($profile["quota_hardinode_" . $id . "_" . $dir])) {
					$this->quota[$server][$i][7] = $profile["quota_hardinode_" . $id . "_" . $dir][0];
				}
			}
		}
	}

	/**
	 * {@inheritDoc}
	 * @see baseModule::get_pdfEntries()
	 */
	function get_pdfEntries($pdfKeys, $typeId) {
		try {
			$this->initQuotas();
		}
		catch (LAMException $e) {
			logNewMessage(LOG_ERR, $e->getTitle(), $e->getMessage());
			return array();
		}
		if (!isset($this->quota) || !is_array($this->quota)) {
			return array();
		}
		if (sizeof($this->quota) > 0) {
			$pdfTable = new PDFTable();
			// get list of lamdaemon servers
			$lamdaemonServers = $_SESSION['config']->getConfiguredScriptServers();
			foreach ($lamdaemonServers as $lamdaemonServer) {
				$server = $lamdaemonServer->getServer();
				$description = $lamdaemonServer->getLabel();
				if ($description != $server) {
					$description = $description . " (" . $server . ")";
				}
				if (!isset($this->quota[$server]) || (sizeof($this->quota[$server]) < 1)) {
					continue;
				}
				$pdfRow = new PDFTableRow();
				$pdfRow->cells[] = new PDFTableCell($description, null, null, true);
				$pdfTable->rows[] = $pdfRow;
				$pdfRow = new PDFTableRow();
				$pdfRow->cells[] = new PDFTableCell(_('Mountpoint'), '28%', null, true);
				$pdfRow->cells[] = new PDFTableCell(_('Soft block'), '18%', null, true);
				$pdfRow->cells[] = new PDFTableCell(_('Hard block'), '18%', null, true);
				$pdfRow->cells[] = new PDFTableCell(_('Soft inode'), '18%', null, true);
				$pdfRow->cells[] = new PDFTableCell(_('Hard inode'), '18%', null, true);
				$pdfTable->rows[] = $pdfRow;
				for ($i = 0; $i < sizeof($this->quota[$server]); $i++) {
					$pdfRow = new PDFTableRow();
					$pdfRow->cells[] = new PDFTableCell($this->quota[$server][$i][0], '28%');
					$pdfRow->cells[] = new PDFTableCell($this->quota[$server][$i][2], '18%');
					$pdfRow->cells[] = new PDFTableCell($this->quota[$server][$i][3], '18%');
					$pdfRow->cells[] = new PDFTableCell($this->quota[$server][$i][6], '18%');
					$pdfRow->cells[] = new PDFTableCell($this->quota[$server][$i][7], '18%');
					$pdfTable->rows[] = $pdfRow;
				}
				$pdfRow = new PDFTableRow();
				$pdfRow->cells[] = new PDFTableCell(' ');
				$pdfTable->rows[] = $pdfRow;
			}
			$return = array();
			$this->addPDFTable($return, 'quotas', $pdfTable);
			return $return;
		}
		else {
			return array();
		}
	}

	/**
	 * {@inheritDoc}
	 * @see baseModule::get_uploadColumns()
	 */
	function get_uploadColumns($selectedModules, &$type) {
		try {
			$this->initQuotas();
		}
		catch (LAMException $e) {
			logNewMessage(LOG_ERR, $e->getTitle(), $e->getMessage());
			return array();
		}
		if (!isset($this->quota) || !is_array($this->quota)) {
			return array();
		}
		$return = array();
		if (sizeof($this->quota) > 0) {
			// get list of lamdaemon servers
			$lamdaemonServers = $_SESSION['config']->getConfiguredScriptServers();
			foreach ($lamdaemonServers as $lamdaemonServer) {
				$server = $lamdaemonServer->getServer();
				// Get quotas
				$remote = new \LAM\REMOTE\Remote();
				try {
					$remote->connect($lamdaemonServer);
				}
				catch (LAMException $e) {
					logNewMessage(LOG_ERR, $e->getTitle(), $e->getMessage());
					continue;
				}
				$quotas = $remote->execute(implode(self::$SPLIT_DELIMITER, array("+", "quota", "get", $this->get_scope())));
				$remote->disconnect();
				$dirs = explode(":", $quotas);
				array_pop($dirs); // remove empty element at the end
				for ($i = 0; $i < sizeof($dirs); $i++) {
					if (strpos($dirs[$i], self::$QUOTA_PREFIX) !== 0) {
						unset($dirs[$i]);
						$i--;
						continue;
					}
					$dirs[$i] = substr($dirs[$i], strlen(self::$QUOTA_PREFIX));
					$dirs[$i] = explode(",", $dirs[$i]);
					$dirs[$i] = $dirs[$i][0];
				}
				$dirs = array_values($dirs);
				for ($i = 0; $i < sizeof($dirs); $i++) {
					$return[] = array(
						'name' => 'quota_' . $server . ':' . $dirs[$i],
						'description' => sprintf(_('Quota for %s on %s'), $dirs[$i], $server),
						'help' => 'upload',
						'example' => '2000,2500,3000,3500');
				}
			}
		}
		return $return;
	}

	/**
	 * {@inheritDoc}
	 * @see baseModule::doUploadPostActions()
	 */
	function doUploadPostActions(&$data, $ids, $failed, &$temp, &$accounts, $selectedModules, $type) {
		$errors = array();
		// first call, get list of user names and quota values
		if (!isset($temp['counter'])) {
			$temp['counter'] = 0;
			// create list of quota columns
			$temp['quotas'] = array();
			$columns = array_keys($ids);
			for ($i = 0; $i < sizeof($columns); $i++) {
				if (strpos($columns[$i], 'quota_') === 0) {
					$temp['quotas'][] = substr($columns[$i], 6);
				}
			}
			// select user/group name depending on current scope
			$temp['accounts'] = array();
			$col = 'invalid';
			if ($this->get_scope() == 'user') {
				$col = $ids['posixAccount_userName'];
			}
			elseif ($this->get_scope() == 'group') {
				$col = $ids['posixGroup_cn'];
			}
			// create list of account names and their quota values
			for ($i = 0; $i < sizeof($data); $i++) {
				if (in_array($i, $failed)) {
					continue; // ignore failed accounts
				}
				$name = $data[$i][$col];
				for ($m = 0; $m < sizeof($temp['quotas']); $m++) {
					if ($data[$i][$ids['quota_' . $temp['quotas'][$m]]] != '') {
						$parts = explode(',', $data[$i][$ids['quota_' . $temp['quotas'][$m]]]);
						// check syntax
						if (sizeof($parts) != 4) {
							$errMsg = $this->messages['upload'][0];
							array_push($errMsg, array($i, 'quota_' . $temp['quotas'][$m]));
							$errors[] = $errMsg;
							continue;
						}
						if (!get_preg($parts[0], 'quotaNumber')) {
							$errMsg = $this->messages['softblock'][1];
							array_push($errMsg, array($i, 'quota_' . $temp['quotas'][$m]));
							$errors[] = $errMsg;
							continue;
						}
						if (!get_preg($parts[1], 'quotaNumber')) {
							$errMsg = $this->messages['hardblock'][1];
							array_push($errMsg, array($i, 'quota_' . $temp['quotas'][$m]));
							$errors[] = $errMsg;
							continue;
						}
						if (!get_preg($parts[2], 'quotaNumber')) {
							$errMsg = $this->messages['softinode'][1];
							array_push($errMsg, array($i, 'quota_' . $temp['quotas'][$m]));
							$errors[] = $errMsg;
							continue;
						}
						if (!get_preg($parts[3], 'quotaNumber')) {
							$errMsg = $this->messages['hardinode'][1];
							array_push($errMsg, array($i, 'quota_' . $temp['quotas'][$m]));
							$errors[] = $errMsg;
							continue;
						}
						if ($this->getQuotaNumber($parts[0]) > $this->getQuotaNumber($parts[1])) {
							$errMsg = $this->messages['block_cmp'][1];
							array_push($errMsg, array($i, 'quota_' . $temp['quotas'][$m]));
							$errors[] = $errMsg;
							continue;
						}
						if ($this->getQuotaNumber($parts[2]) > $this->getQuotaNumber($parts[3])) {
							$errMsg = $this->messages['inode_cmp'][1];
							array_push($errMsg, array($i, 'quota_' . $temp['quotas'][$m]));
							$errors[] = $errMsg;
							continue;
						}
						$parts[0] = $this->getQuotaNumber($parts[0]);
						$parts[1] = $this->getQuotaNumber($parts[1]);
						$parts[2] = $this->getQuotaNumber($parts[2]);
						$parts[3] = $this->getQuotaNumber($parts[3]);
						// save quota settings
						$temp['accounts'][$name][$temp['quotas'][$m]] = $parts;
					}
				}
			}
			return array('status' => 'inProgress', 'progress' => 5, 'errors' => $errors);
		}
		// quotas are ready to set
		elseif ($temp['counter'] < sizeof($temp['accounts'])) {
			$names = array_keys($temp['accounts']);
			$name = $names[$temp['counter']];
			$mountPoints = array_keys($temp['accounts'][$name]);
			// set quota
			for ($m = 0; $m < sizeof($mountPoints); $m++) {
				$mpParts = explode(":", $mountPoints[$m]);
				$server = $mpParts[0];
				$dir = $mpParts[1];
				$quotaString = implode(self::$SPLIT_DELIMITER, array($name, "quota", "set", $this->get_scope(), $dir . ',' .
					implode(',', $temp['accounts'][$name][$mountPoints[$m]]) . "\n"));
				$remote = new \LAM\REMOTE\Remote();
				$remoteServer = $_SESSION['config']->getScriptServerByName($server);
				try {
					$remote->connect($remoteServer);
				}
				catch (LAMException $e) {
					$errors[] = array('ERROR', $e->getTitle(), $e->getMessage());
					continue;
				}
				$result = $remote->execute($quotaString);
				$remote->disconnect();
				if (!empty($result)) {
					$parts = explode(",", $result);
					if ($parts[0] == 'ERROR') {
						$errors[] = array('ERROR', $parts[1], $parts[2]);
					}
				}
			}
			// set counters to next account/mount point
			$temp['counter']++;
			return array(
				'status' => 'inProgress',
				'progress' => 5 + (95 * ($temp['counter'] / sizeof($temp['accounts']))),
				'errors' => $errors);
		}
		return array('status' => 'finished');
	}

	/**
	* Returns a list of modifications which have to be made to the LDAP account.
	*
	* Calling this method requires the existence of an enclosing {@link accountContainer}.<br>
	* <br>
	*
	* <br>This function returns an array with 3 entries:
	* <br>array( DN1 ('add' => array($attr), 'remove' => array($attr), 'modify' => array($attr)), DN2 .... )
	* <br>DN is the DN to change. It is possible to change several DNs (e.g. create a new user and add him
	* to some groups via attribute memberUid)<br>
	* <br><b>"add"</b> are attributes which have to be added to the LDAP entry
	* <br><b>"remove"</b> are attributes which have to be removed from the LDAP entry
	* <br><b>"modify"</b> are attributes which have to be modified in the LDAP entry
	* <br><b>"notchanged"</b> are attributes which stay unchanged
	* <br><b>"info"</b> values with informational value (e.g. to be used later by pre/postModify actions)
	* <br>
	* <br>This builds the required commands from $this-attributes and $this->orig.
	*
	* @return array list of modifications
	*/
	public function save_attributes() {
		// no LDAP changes
		return $this->getAccountContainer()->save_module_attributes(array(), array());
	}

	/**
	 * {@inheritDoc}
	 */
	function getSelfServiceOptions($fields, $attributes, $passwordChangeOnly, $readOnlyFields) {
		$return = array();
		if ($passwordChangeOnly) {
			return $return; // no fields as long no LDAP content can be read
		}
		if (in_array('quota', $fields) && !empty($attributes['uid'][0])) {
			$profile = $this->selfServiceSettings;
			$lamdaemonServers = LAMConfig::parseConfiguredScriptServers($profile->scriptServer, $profile->scriptPath,
				$profile->scriptUserName, $profile->scriptSSHKey, deobfuscateText($profile->scriptSSHKeyPassword));
			$this->initQuotas($attributes['uid'][0], $lamdaemonServers);
			$serverDescriptions = array();
			foreach ($lamdaemonServers as $lamdaemonServer) {
				$serverDescriptions[$lamdaemonServer->getServer()] = $lamdaemonServer->getLabel();
			}
			$quotaRow = new htmlResponsiveRow();
			foreach ($this->quota as $server => $quotaDatas) {
				$title = $server;
				if ($serverDescriptions[$server] != $server) {
					$title = $serverDescriptions[$server] . " (" . $server . ")";
				}
				$quotaRow->add(new htmlSubTitle($title), 12);

				$titles = array(
					_('Mountpoint'), _('Used blocks'), _('Soft block limit'), _('Hard block limit'),
					_('Used inodes'), _('Soft inode limit'), _('Hard inode limit')
				);
				$data = array();
				// loop for every mointpoint with enabled quotas
				foreach ($quotaDatas as $quotaData) {
					$dataRow = array();
					$mountPoint = new htmlOutputText($quotaData[0]);
					$mountPoint->setNoWrap(true);
					$dataRow[] = $mountPoint;
					$dataRow[] = new htmlOutputText($quotaData[1]);
					$dataRow[] = new htmlOutputText($quotaData[2]);
					$dataRow[] = new htmlOutputText($quotaData[3]);
					$dataRow[] = new htmlOutputText($quotaData[5]);
					$dataRow[] = new htmlOutputText($quotaData[6]);
					$dataRow[] = new htmlOutputText($quotaData[7]);
					$data[] = $dataRow;
				}
				$table = new htmlResponsiveTable($titles, $data);
				$table->setCSSClasses(array('responsive-table-wrap-th'));
				$table->setWidths(array('20%', '5%', '10%', '10%', '5%', '5%', '10%', '10%', '5%'));
				$quotaRow->add($table, 12);
			}
			$return['quota'] = $quotaRow;
		}
		return $return;
	}

}
