Merge pull request #65 from LDAPAccountManager/feature/parallelEditing

Feature/parallel editing

lam/HISTORY

@@ -1,6 +1,7 @@
 6.8
-  - Windows: added home drive and force password change to profile editor
+  - Parallel editing of multiple entries in different browser tabs supported
   - LAM supports the progressive web app standard which allows to install LAM as an icon on home screen
+  - Windows: added home drive and force password change to profile editor
   - LAM Pro:
    -> Bind DLZ: entry table can show record data (use special attribute "#records" in server profile)
   - Fixed bugs:

lam/lib/modules.inc

@@ -745,9 +745,8 @@ class accountContainer {
 	*
 	* @param ConfiguredType $type account type
 	* @param string $base key in $_SESSION where this object is saved
-	* @param integer $randomID random ID to avoid parallel editing (default: null)
 	*/
-	function __construct($type, $base, $randomID = null) {
+	function __construct($type, $base) {
 		if (!($type instanceof ConfiguredType)) {
 			trigger_error('Argument of accountContainer must be ConfiguredType.', E_USER_ERROR);
 		}
@@ -760,7 +759,6 @@ class accountContainer {
 		$this->current_page=0;
 		$this->subpage='attributes';
 		$this->isNewAccount = false;
-		$this->randomID = $randomID;
 		return 0;
 	}
 
@@ -824,8 +822,6 @@ class accountContainer {
 	/** send password via mail to this alternate address */
 	private $sendPasswordViaMailAlternateAddress = null;
 
-	/** random ID number to avoid parallel editing of accounts in multiple browser tabs */
-	private $randomID = null;
 
 	/**
 	 * Returns the account module with the given class name
@@ -865,10 +861,6 @@ class accountContainer {
 	* It prints the HTML code of each account page.
 	*/
 	function continue_main() {
-		if (!empty($_POST['account_randomID']) && ($this->randomID != $_POST['account_randomID'])) {
-			metaRefresh("../lists/list.php?type=" . $this->type->getId() . '&accountEditInvalidID=true');
-			exit();
-		}
 		$oldPage = $this->current_page;
 		$oldSubpage = $this->subpage;
 		$result = array();
@@ -1322,7 +1314,7 @@ class accountContainer {
 			$passwordButton = new htmlButton('accountContainerPassword', _('Set password'));
 			$passwordButton->setIconClass('passwordButton');
 			$passwordButton->setOnClick('passwordShowChangeDialog(\'' . _('Set password') . '\', \'' . _('Ok') . '\', \''
-				 . _('Cancel') . '\', \'' . _('Set random password') . '\', \'../misc/ajax.php?function=passwordChange\',\''
+				 . _('Cancel') . '\', \'' . _('Set random password') . '\', \'../misc/ajax.php?function=passwordChange&editKey=' . htmlspecialchars($this->base) . '\',\''
 				 . getSecurityTokenName() . '\',\'' . getSecurityTokenValue() . '\');');
 			$leftButtonGroup->addElement($passwordButton);
 		}
@@ -1377,8 +1369,7 @@ class accountContainer {
 					jQuery("#inputForm").validationEngine();
 				});
 			</script>';
-		echo "<form id=\"inputForm\" enctype=\"multipart/form-data\" action=\"edit.php\" method=\"post\" onSubmit=\"saveScrollPosition('inputForm')\" autocomplete=\"off\">\n";
+		echo "<form id=\"inputForm\" enctype=\"multipart/form-data\" action=\"edit.php?editKey=" . htmlspecialchars($this->base) . "\" method=\"post\" onSubmit=\"saveScrollPosition('inputForm')\" autocomplete=\"off\">\n";
-		echo '<input type="hidden" name="account_randomID" value="' . $this->randomID . '">';
 		echo '<input type="hidden" name="' . getSecurityTokenName() . '" value="' . getSecurityTokenValue() . '">';
 	}
 

lam/lib/remote.inc

@@ -4,10 +4,9 @@ use \LAMException;
 use \phpseclib\Net\SSH2;
 use \phpseclib\Crypt\RSA;
 /*
-$Id$
 
   This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
-  Copyright (C) 2017  Roland Gruber
+  Copyright (C) 2017 - 2019  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
@@ -108,7 +107,9 @@ class Remote {
 			$sr = @ldap_read($_SESSION['ldap']->server(), $credentials[0], "objectClass=posixAccount", array('uid'), 0, 0, 0, LDAP_DEREF_NEVER);
 			if ($sr) {
 				$entry = @ldap_get_entries($_SESSION['ldap']->server(), $sr);
-				$username = $entry[0]['uid'][0];
+				if (!empty($entry[0]['uid'])) {
+					$username = $entry[0]['uid'][0];
+				}
 			}
 			if (empty($username)) {
 				throw new LAMException(sprintf(_("Your LAM admin user (%s) must be a valid Unix account to work with lamdaemon!"), getAbstractDN($credentials[0])));

lam/templates/account/edit.php

@@ -3,7 +3,7 @@
 
   This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
   Copyright (C) 2003 - 2006  Tilo Lutz
-                2005 - 2018  Roland Gruber
+                2005 - 2019  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
@@ -57,6 +57,31 @@ if (!isLoggedIn()) {
 // Set correct language, codepages, ....
 setlanguage();
 
+$sessionAccountPrefix = 'editContainer';
+if (isset($_GET['editKey'])) {
+	$sessionKey = htmlspecialchars($_GET['editKey']);
+}
+else {
+	$sessionKey = $sessionAccountPrefix . (new \DateTime(null, getTimeZone()))->getTimestamp() . getRandomNumber();
+}
+
+// cleanup account containers in session
+$cleanupCandidates = array();
+foreach ($_SESSION as $key => $value) {
+	if (strpos($key, $sessionAccountPrefix) === 0) {
+		$cleanupCandidates[] = $key;
+	}
+	$candidateCount = sizeof($cleanupCandidates);
+	if ($candidateCount > 100) {
+		$numToDelete = $candidateCount - 100;
+		natsort($cleanupCandidates);
+		for ($i = 0; $i < $numToDelete; $i++) {
+			$toDelete = array_shift($cleanupCandidates);
+			unset($_SESSION[$toDelete]);
+		}
+	}
+}
+
 $typeManager = new LAM\TYPES\TypeManager();
 //load account
 if (isset($_GET['DN'])) {
@@ -80,8 +105,8 @@ if (isset($_GET['DN'])) {
 		logNewMessage(LOG_ERR, 'User tried to access entry of type ' . $type->getId() . ' outside suffix ' . $suffix);
 		die();
 	}
-	$_SESSION['account'] = new accountContainer($type, 'account', getRandomNumber());
+	$_SESSION[$sessionKey] = new accountContainer($type, $sessionKey);
-	$result = $_SESSION['account']->load_account($DN);
+	$result = $_SESSION[$sessionKey]->load_account($DN);
 	if (sizeof($result) > 0) {
 		include __DIR__ . '/../../lib/adminHeader.inc';
 		foreach ($result as $message) {
@@ -92,7 +117,7 @@ if (isset($_GET['DN'])) {
 	}
 }
 // new account
-else if (count($_POST) == 0) {
+elseif (empty($_POST)) {
 	$type = $typeManager->getConfiguredType($_GET['type']);
 	if ($type->isHidden()) {
 		logNewMessage(LOG_ERR, 'User tried to access hidden account type: ' . $type->getId());
@@ -102,11 +127,11 @@ else if (count($_POST) == 0) {
 		logNewMessage(LOG_ERR, 'User tried to create entry of forbidden account type: ' . $type->getId());
 		die();
 	}
-	$_SESSION['account'] = new accountContainer($type, 'account', getRandomNumber());
+	$_SESSION[$sessionKey] = new accountContainer($type, $sessionKey);
-	$_SESSION['account']->new_account();
+	$_SESSION[$sessionKey]->new_account();
 }
 
 // show account page
-$_SESSION['account']->continue_main();
+$_SESSION[$sessionKey]->continue_main();
 
 ?>

lam/templates/delete.php

@@ -11,7 +11,7 @@ use \htmlStatusMessage;
 
 	This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
 	Copyright (C) 2003 - 2006  Tilo Lutz
-	Copyright (C) 2007 - 2018  Roland Gruber
+	Copyright (C) 2007 - 2019  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
@@ -74,6 +74,14 @@ if (!empty($_POST)) {
 	validateSecurityToken();
 }
 
+$sessionAccountPrefix = 'deleteContainer';
+foreach ($_SESSION as $key => $value) {
+	if (strpos($key, $sessionAccountPrefix) === 0) {
+		unset($_SESSION[$key]);
+		logNewMessage(LOG_NOTICE, "del " . $key);
+	}
+}
+
 $typeManager = new \LAM\TYPES\TypeManager();
 
 if (isset($_POST['type']) && ($typeManager->getConfiguredType($_POST['type']) === null)) {
@@ -99,8 +107,9 @@ if (isset($_GET['type']) && isset($_SESSION['delete_dn'])) {
 		$users[] = substr($dn, $start, $end-$start);
 	}
 
+	$sessionKey = $sessionAccountPrefix . (new \DateTime(null, getTimeZone()))->getTimestamp() . getRandomNumber();
 	//load account
-	$_SESSION['account'] = new \accountContainer($type, 'account');
+	$_SESSION[$sessionKey] = new \accountContainer($type, $sessionKey);
 	// Show HTML Page
 	include '../lib/adminHeader.inc';
 	echo "<div class=\"" . $type->getScope() . "-bright smallPaddingContent\">";
@@ -116,8 +125,8 @@ if (isset($_GET['type']) && isset($_SESSION['delete_dn'])) {
 		$container->addField(new htmlOutputText($users[$i]));
 		$container->addLabel(new htmlOutputText(_('DN') . ':'));
 		$container->addField(new htmlOutputText($_SESSION['delete_dn'][$i]));
-		$_SESSION['account']->load_account($_SESSION['delete_dn'][$i]);
+		$_SESSION[$sessionKey]->load_account($_SESSION['delete_dn'][$i]);
-		if (!$_SESSION['account']->hasOnlyVirtualChildren()) {
+		if (!$_SESSION[$sessionKey]->hasOnlyVirtualChildren()) {
 			$childCount = getChildCount($_SESSION['delete_dn'][$i]);
 			if ($childCount > 0) {
 				$container->addLabel(new htmlOutputText(_('Number of child entries') . ':'));
@@ -182,6 +191,8 @@ if (isset($_POST['delete'])) {
 	addSecurityTokenToMetaHTML($container);
 	$container->add(new htmlHiddenInput('type', $type->getId()), 12);
 
+	$sessionKey = $sessionAccountPrefix . (new \DateTime(null, getTimeZone()))->getTimestamp() . getRandomNumber();
+	$_SESSION[$sessionKey] = new \accountContainer($type, $sessionKey);
 	// Delete dns
 	$allOk = true;
 	$allErrors = array();
@@ -189,10 +200,10 @@ if (isset($_POST['delete'])) {
 		// Set to true if an real error has happened
 		$stopprocessing = false;
 		// First load DN.
-		$_SESSION['account']->load_account($deleteDN);
+		$_SESSION[$sessionKey]->load_account($deleteDN);
 		// get commands and changes of each attribute
-		$moduleNames = array_keys($_SESSION['account']->getAccountModules());
+		$moduleNames = array_keys($_SESSION[$sessionKey]->getAccountModules());
-		$modules = $_SESSION['account']->getAccountModules();
+		$modules = $_SESSION[$sessionKey]->getAccountModules();
 		$attributes = array();
 		$errors = array();
 		// predelete actions
@@ -279,7 +290,7 @@ if (isset($_POST['delete'])) {
 			}
 		}
 		if (!$stopprocessing) {
-			$recursive = !$_SESSION['account']->hasOnlyVirtualChildren();
+			$recursive = !$_SESSION[$sessionKey]->hasOnlyVirtualChildren();
 			$messages = deleteDN($deleteDN, $recursive);
 			$errors = array_merge($errors, $messages);
 			if (sizeof($errors) > 0) {

lam/templates/misc/ajax.php

@@ -75,8 +75,12 @@ class Ajax {
 		if (isset($_GET['module']) && isset($_GET['scope']) && in_array($_GET['module'], getAvailableModules($_GET['scope']))) {
 			enforceUserIsLoggedIn();
 			if (isset($_GET['useContainer']) && ($_GET['useContainer'] == '1')) {
-				if (!isset($_SESSION['account'])) die();
+				$sessionKey  = htmlspecialchars($_GET['editKey']);
-				$module = $_SESSION['account']->getAccountModule($_GET['module']);
+				if (!isset($_SESSION[$sessionKey])) {
+					logNewMessage(LOG_ERR, 'Unable to find account container');
+					die();
+				}
+				$module = $_SESSION[$sessionKey]->getAccountModule($_GET['module']);
 				$module->handleAjaxRequest();
 			}
 			else {
@@ -157,7 +161,8 @@ class Ajax {
 	 * @param array $input input parameters
 	 */
 	private static function managePasswordChange($input) {
-		$return = $_SESSION['account']->setNewPassword($input);
+		$sessionKey  = htmlspecialchars($_GET['editKey']);
+		$return = $_SESSION[$sessionKey]->setNewPassword($input);
 		echo json_encode($return);
 	}