do not try to search after the last page
- saves an LDAP requests in these cases - prevents a Protocol Error logged on < 7.3 API (for backports) Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>
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@ -28,6 +28,7 @@ return array(
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'OCA\\User_LDAP\\Events\\UserBackendRegistered' => $baseDir . '/../lib/Events/UserBackendRegistered.php',
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'OCA\\User_LDAP\\Exceptions\\AttributeNotSet' => $baseDir . '/../lib/Exceptions/AttributeNotSet.php',
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'OCA\\User_LDAP\\Exceptions\\ConstraintViolationException' => $baseDir . '/../lib/Exceptions/ConstraintViolationException.php',
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'OCA\\User_LDAP\\Exceptions\\NoMoreResults' => $baseDir . '/../lib/Exceptions/NoMoreResults.php',
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'OCA\\User_LDAP\\Exceptions\\NotOnLDAP' => $baseDir . '/../lib/Exceptions/NotOnLDAP.php',
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'OCA\\User_LDAP\\FilesystemHelper' => $baseDir . '/../lib/FilesystemHelper.php',
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'OCA\\User_LDAP\\GroupPluginManager' => $baseDir . '/../lib/GroupPluginManager.php',
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@ -43,6 +43,7 @@ class ComposerStaticInitUser_LDAP
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'OCA\\User_LDAP\\Events\\UserBackendRegistered' => __DIR__ . '/..' . '/../lib/Events/UserBackendRegistered.php',
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'OCA\\User_LDAP\\Exceptions\\AttributeNotSet' => __DIR__ . '/..' . '/../lib/Exceptions/AttributeNotSet.php',
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'OCA\\User_LDAP\\Exceptions\\ConstraintViolationException' => __DIR__ . '/..' . '/../lib/Exceptions/ConstraintViolationException.php',
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'OCA\\User_LDAP\\Exceptions\\NoMoreResults' => __DIR__ . '/..' . '/../lib/Exceptions/NoMoreResults.php',
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'OCA\\User_LDAP\\Exceptions\\NotOnLDAP' => __DIR__ . '/..' . '/../lib/Exceptions/NotOnLDAP.php',
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'OCA\\User_LDAP\\FilesystemHelper' => __DIR__ . '/..' . '/../lib/FilesystemHelper.php',
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'OCA\\User_LDAP\\GroupPluginManager' => __DIR__ . '/..' . '/../lib/GroupPluginManager.php',
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@ -51,6 +51,7 @@ use OC\HintException;
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use OC\Hooks\PublicEmitter;
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use OC\ServerNotAvailableException;
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use OCA\User_LDAP\Exceptions\ConstraintViolationException;
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use OCA\User_LDAP\Exceptions\NoMoreResults;
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use OCA\User_LDAP\Mapping\AbstractMapping;
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use OCA\User_LDAP\User\Manager;
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use OCA\User_LDAP\User\OfflineUser;
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@ -267,7 +268,14 @@ class Access extends LDAPUtility {
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* @throws ServerNotAvailableException
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*/
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public function executeRead($cr, $dn, $attribute, $filter, $maxResults) {
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try {
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$this->initPagedSearch($filter, $dn, [$attribute], $maxResults, 0);
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} catch (NoMoreResults $e) {
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// does not happen, no pagination here since offset is 0, but the
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// previous call is needed for a potential reset of the state.
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// Tools would still point out a possible NoMoreResults exception.
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return false;
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}
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$dn = $this->helper->DNasBaseParameter($dn);
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$rr = @$this->invokeLDAPMethod('read', $cr, $dn, $filter, [$attribute]);
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if (!$this->ldap->isResource($rr)) {
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@ -1146,7 +1154,12 @@ class Access extends LDAPUtility {
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}
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//check whether paged search should be attempted
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try {
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$pagedSearchOK = $this->initPagedSearch($filter, $base, $attr, (int)$limit, (int)$offset);
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} catch (NoMoreResults $e) {
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// beyond last results page
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return false;
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}
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$sr = $this->invokeLDAPMethod('search', $cr, $base, $filter, $attr);
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// cannot use $cr anymore, might have changed in the previous call!
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@ -1999,6 +2012,7 @@ class Access extends LDAPUtility {
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* @param int $offset
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* @return bool|true
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* @throws ServerNotAvailableException
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* @throws NoMoreResults
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*/
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private function initPagedSearch(
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string $filter,
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@ -2030,7 +2044,7 @@ class Access extends LDAPUtility {
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if (!$this->hasMoreResults()) {
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// when the cookie is reset with != 0 offset, there are no further
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// results, so stop.
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return false;
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throw new NoMoreResults();
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}
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}
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if ($this->lastCookie !== '' && $offset === 0) {
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@ -0,0 +1,30 @@
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<?php
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declare(strict_types=1);
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/**
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* @copyright Copyright (c) 2021 Arthur Schiwon <blizzz@arthur-schiwon.de>
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*
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* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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namespace OCA\User_LDAP\Exceptions;
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class NoMoreResults extends \Exception {
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}
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