777 lines
19 KiB
PHP
777 lines
19 KiB
PHP
<?php
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namespace LAM\TOOLS\IMPORT_EXPORT;
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use \htmlStatusMessage;
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use \LAMException;
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/*
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This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
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Copyright (C) 2018 - 2020 Roland Gruber
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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 General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* LDIF import.
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*
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* @author Roland Gruber
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* @package tools
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*/
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/** LDAP handle */
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include_once('ldap.inc');
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/**
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* Imports LDIF files.
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*
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* @author Roland Gruber
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* @package tools
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*/
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class Importer {
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const SESSION_KEY_TASKS = 'import_tasks';
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const SESSION_KEY_COUNT = 'import_count';
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const SESSION_KEY_STOP_ON_ERROR = 'import_stop_on_error';
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const STATUS = 'status';
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const PROGRESS = 'progress';
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const DATA = 'data';
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const TIME_LIMIT = 10;
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const KEY = 0;
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const VALUE = 1;
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const CHANGETYPE = 'changeType';
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/**
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* Extracts the single entries in the file.
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*
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* @param string[] $lines LDIF lines
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* @return string|array array of string[]
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* @throws LAMException invalid format
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*/
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private function extractImportChunks($lines) {
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$entries = array();
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$currentEntry = array();
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foreach ($lines as $line) {
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$trimmedLine = trim($line);
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if (substr($trimmedLine, 0, 1) === '#') {
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// skip comments
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continue;
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}
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if (empty($trimmedLine)) {
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// end of entry
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if (!empty($currentEntry)) {
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$entries[] = $currentEntry;
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$currentEntry = array();
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}
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}
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elseif (substr($line, 0, 1) === ' ') {
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// append to last line if starting with a space
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if (empty($currentEntry)) {
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throw new LAMException(_('Invalid data'), htmlspecialchars($line));
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}
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else {
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$currentEntry[sizeof($currentEntry) - 1] .= substr($line, 1);
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}
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}
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elseif ($line === '-') {
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$currentEntry[] = $line;
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}
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else {
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$parts = explode(':', $line, 2);
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if (sizeof($parts) < 2) {
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throw new LAMException(_('Invalid data'), htmlspecialchars($line));
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}
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$currentEntry[] = $line;
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}
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}
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if (!empty($currentEntry)) {
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$entries[] = $currentEntry;
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}
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return $entries;
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}
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/**
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* Converts the lines to LDAP import tasks.
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*
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* @param string[] $lines import lines
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* @throws LAMException if invalid format was found
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* @return ImporterTask[] tasks
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*/
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public function getTasks($lines) {
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$chunks = $this->extractImportChunks($lines);
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return $this->convertToTasks($chunks);
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}
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/**
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* Processes the import data stored in session.
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*/
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public function doImport() {
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$data = '';
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$tasks = &$_SESSION[Importer::SESSION_KEY_TASKS];
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$stopOnError = $_SESSION[Importer::SESSION_KEY_STOP_ON_ERROR];
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// check if any actions are needed at all
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if (empty($tasks)) {
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return $this->getStatus($data);
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}
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$endTime = $this->getEndTime();
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while ((!empty($tasks)) && ($endTime > time())) {
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$task = array_shift($tasks);
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try {
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$data .= $task->run();
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}
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catch (LAMException $e) {
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if ($stopOnError) {
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return $this->stopImport($data, $e);
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}
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else {
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$data .= Importer::formatMessage('ERROR', $e->getTitle(), $e->getMessage());
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}
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}
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}
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return $this->getStatus($data);
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}
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/**
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* Stops the import process because of an exception.
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*
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* @param string $data HTML output
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* @param LAMException $e exception
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* @return string JSON status
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*/
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private function stopImport($data, LAMException $e) {
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$data .= Importer::formatMessage('ERROR', $e->getTitle(), $e->getMessage());
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if (isset($_SESSION[Importer::SESSION_KEY_TASKS])) {
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unset($_SESSION[Importer::SESSION_KEY_TASKS]);
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}
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$status = array(
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Importer::STATUS => 'failed',
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Importer::DATA => $data
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);
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return json_encode($status);
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}
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/**
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* Returns the current status as JSON.
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*
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* @param string $data HTML output to display
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* @return string JSON status
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*/
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private function getStatus($data) {
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if (empty($_SESSION[Importer::SESSION_KEY_TASKS])) {
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if (isset($_SESSION[Importer::SESSION_KEY_TASKS])) {
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unset($_SESSION[Importer::SESSION_KEY_TASKS]);
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}
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$status = array(
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Importer::STATUS => 'done',
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Importer::DATA => $data
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);
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return json_encode($status);
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}
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$progress = (sizeof($_SESSION[Importer::SESSION_KEY_TASKS]) / $_SESSION[Importer::SESSION_KEY_COUNT]) * 100.0;
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$progress = floor(100 - $progress);
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$status = array(
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Importer::STATUS => 'inProgress',
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Importer::PROGRESS => $progress,
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Importer::DATA => $data
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);
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return json_encode($status);
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}
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/**
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* Returns the time when processing should end.
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*
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* @return number end time as Unix timestamp
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*/
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private function getEndTime() {
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$startTime = time();
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$maxTime = get_cfg_var('max_execution_time') - 10;
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if ($maxTime > Importer::TIME_LIMIT) {
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$maxTime = Importer::TIME_LIMIT;
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}
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if ($maxTime <= 0) {
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$maxTime = Importer::TIME_LIMIT;
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}
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return $startTime + $maxTime;
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}
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/**
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* Continues the import with processing of a single entry.
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*
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* @param array[] $entries import entries
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* @return ImporterTask[] tasks
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*/
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private function convertToTasks($entries) {
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$tasks = array();
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$count = sizeof($entries);
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for ($i = 0; $i < $count; $i++) {
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$entry = $entries[$i];
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$firstParts = explode(':', $entry[0], 2);
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if ($firstParts[Importer::KEY] == 'version') {
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if ($i > 0) {
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// allow version only as first chunk
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throw new LAMException(_('Invalid data'), _('Duplicate version entry found.'));
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}
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$this->processVersion($entry);
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}
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elseif ($firstParts[Importer::KEY] == 'dn') {
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$tasks[] = $this->processDnEntry($entry);
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}
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else {
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throw new LAMException(_('A valid dn line is required'), htmlspecialchars($entry[0]));
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}
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}
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return $tasks;
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}
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/**
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* Checks a version entry.
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*
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* @param string[] $entry entry
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* @throws LAMException if version is invalid
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*/
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private function processVersion($entry) {
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$keyValue = $this->getLineKeyValue($entry[0]);
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if (($keyValue[Importer::VALUE] != '1') || (sizeof($entry) > 1)) {
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$escapedLines = array_map('htmlspecialchars', $entry);
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throw new LAMException(_('LDIF import only supports version 1'), implode('<br>', $escapedLines));
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}
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}
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/**
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* Checks a dn entry.
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*
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* @param string[] $entry entry
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* @return ImporterTask task
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* @throws LAMException if invalid format
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*/
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private function processDnEntry($entry) {
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$dnLine = array_shift($entry);
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$keyValue = $this->getLineKeyValue($dnLine);
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$dn = $keyValue[Importer::VALUE];
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if (empty($entry)) {
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throw new LAMException(_('Invalid data'), htmlspecialchars($dnLine));
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}
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$firstAttributeLine = array_shift($entry);
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$firstAttribute = $this->getLineKeyValue($firstAttributeLine);
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if ($firstAttribute[Importer::KEY] != Importer::CHANGETYPE) {
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// complete DN
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$attributes = array(
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$firstAttribute[Importer::KEY] => array($firstAttribute[Importer::VALUE])
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);
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foreach ($entry as $attributeLine) {
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$attribute = $this->getLineKeyValue($attributeLine);
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$attributes[$attribute[Importer::KEY]][] = $attribute[Importer::VALUE];
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}
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return new AddEntryTask($dn, $attributes);
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}
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else {
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$type = $firstAttribute[Importer::VALUE];
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if ($type === 'add') {
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$attributes = array();
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foreach ($entry as $line) {
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$lineData = $this->getLineKeyValue($line);
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$attributes[$lineData[Importer::KEY]][] = $lineData[Importer::VALUE];
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}
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return new AddEntryTask($dn, $attributes);
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}
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elseif ($type === 'modrdn') {
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return $this->createModRdnTask($dn, $entry);
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}
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elseif ($type === 'delete') {
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if (!empty($entry)) {
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throw new LAMException(_('Invalid data'), htmlspecialchars($dn));
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}
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return new DeleteEntryTask($dn);
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}
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elseif ($type !== 'modify') {
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throw new LAMException(_('Invalid data'), htmlspecialchars($dn) . ' - changeType: ' . htmlspecialchars($type));
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}
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$subtasks = array();
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$currentLines = array();
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$linesCount = sizeof($entry);
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for ($i = 0; $i < $linesCount; $i++) {
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$line = $entry[$i];
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if ($line === '-') {
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$subtasks[] = $this->getChangeTypeTask($dn, $currentLines);
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$currentLines = array();
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}
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else {
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$currentLines[] = $line;
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}
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}
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$subtasks[] = $this->getChangeTypeTask($dn, $currentLines);
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return new MultiTask($subtasks, $dn);
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}
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}
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/**
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* Returns a modrdn task.
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*
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* @param string $dn DN
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* @param string[] $entry entry lines
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* @return
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* @throws LAMException syntax error
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*/
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private function createModRdnTask($dn, $entry) {
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if (sizeof($entry) !== 2) {
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throw new LAMException(_('Invalid data'), htmlspecialchars($dn));
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}
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$newRdnData = $this->getLineKeyValue($entry[0]);
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if ($newRdnData[Importer::KEY] !== 'newrdn') {
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throw new LAMException(_('Invalid data'), htmlspecialchars($dn) . '<br>' . $newRdnData);
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}
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$newRdn = $newRdnData[Importer::VALUE];
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$delOldRdnData = $this->getLineKeyValue($entry[1]);
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if (($delOldRdnData[Importer::KEY] !== 'deleteoldrdn') || !in_array($delOldRdnData[Importer::VALUE], array('0', '1'), true)) {
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throw new LAMException(_('Invalid data'), htmlspecialchars($dn) . '<br>' . $entry[1]);
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}
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$delOldRdn = ($delOldRdnData[Importer::VALUE] !== '0');
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return new RenameEntryTask($dn, $newRdn, $delOldRdn);
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}
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/**
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* Returns a task for LDIF changeType entry.
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*
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* @param string $dn DN
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* @param string $lines lines
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* @return ImporterTask task
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*/
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private function getChangeTypeTask($dn, $lines) {
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$firstLine = array_shift($lines);
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$firstLineData = $this->getLineKeyValue($firstLine);
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$type = $firstLineData[Importer::KEY];
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$attributeName = $firstLineData[Importer::VALUE];
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$attributes = array();
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foreach ($lines as $line) {
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$lineData = $this->getLineKeyValue($line);
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if ($lineData[Importer::KEY] !== $attributeName) {
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throw new LAMException(_('Invalid data'), htmlspecialchars($dn) . ' - ' . htmlspecialchars($type));
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}
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$attributes[$attributeName][] = $lineData[Importer::VALUE];
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}
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if ($type === 'add') {
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return new AddAttributesTask($dn, $attributes);
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}
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elseif ($type === 'delete') {
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return new DeleteAttributesTask($dn, $attributeName, $attributes);
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}
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elseif ($type === 'replace') {
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return new ReplaceAttributesTask($dn, $attributes);
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}
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throw new LAMException(_('Invalid data'), htmlspecialchars($dn) . ' - ' . htmlspecialchars($type));
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}
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/**
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* Returns the HTML for an error message.
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*
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* @param string $type message type (e.g. INFO)
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* @param string $title title
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* @param string $message message
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* @return string HTML
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*/
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public static function formatMessage($type, $title, $message) {
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$msg = new htmlStatusMessage($type, $title, $message);
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$tabindex = 0;
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ob_start();
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$msg->generateHTML(null, array($msg), array(), true, $tabindex, 'user');
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$data = ob_get_contents();
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ob_clean();
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return $data;
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}
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/**
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* Returns the key and value part of the line.
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*
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* @param string $line line
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* @return string[] array(key, value)
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*/
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private function getLineKeyValue($line) {
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$parts = explode(':', $line, 2);
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if (sizeof($parts) !== 2) {
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throw new LAMException(_('Invalid data'), htmlspecialchars($line));
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}
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if (substr($parts[Importer::VALUE], 0, 1) == ':') {
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$value = base64_decode(trim(substr($parts[Importer::VALUE], 1)));
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}
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else {
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$value = trim($parts[Importer::VALUE]);
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}
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return array($parts[Importer::KEY], $value);
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}
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}
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/**
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* A single import task.
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*
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* @author Roland Gruber
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*/
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interface ImporterTask {
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/**
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* Runs the task.
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*
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* @return string HTML output or LAMException if error occurred
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*/
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public function run();
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}
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/**
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* Adds a complete LDAP entry.
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*
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* @author Roland Gruber
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*/
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class AddEntryTask implements ImporterTask {
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private $dn = '';
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private $attributes = array();
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/**
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* Constructor
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*
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* @param string $dn DN
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* @param array[string[]] $attributes list of attributes
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*/
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public function __construct($dn, $attributes) {
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$this->dn = $dn;
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$this->attributes = $attributes;
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}
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/**
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* {@inheritDoc}
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* @see \LAM\TOOLS\IMPORT_EXPORT\ImporterTask::run()
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*/
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public function run() {
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$ldap = $_SESSION['ldap']->server();
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$success = @ldap_add($ldap, $this->dn, $this->attributes);
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if ($success) {
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return Importer::formatMessage('INFO', _('Entry created'), htmlspecialchars($this->dn));
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}
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throw new LAMException(sprintf(_('Was unable to create DN: %s.'), $this->dn), getExtendedLDAPErrorMessage($ldap));
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}
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}
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/**
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* Renames an LDAP entry.
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*
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* @author Roland Gruber
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*/
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class RenameEntryTask implements ImporterTask {
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private $dn = '';
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private $newRdn = '';
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private $deleteOldRdn = true;
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/**
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* Constructor
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*
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* @param string $dn DN
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* @param string $newRdn new RDN value
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* @param bool $deleteOldRdn delete old RDN value
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*/
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public function __construct($dn, $newRdn, $deleteOldRdn) {
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$this->dn = $dn;
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$this->newRdn = $newRdn;
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$this->deleteOldRdn = $deleteOldRdn;
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}
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/**
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* {@inheritDoc}
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* @see \LAM\TOOLS\IMPORT_EXPORT\ImporterTask::run()
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*/
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public function run() {
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$ldap = $_SESSION['ldap']->server();
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$success = @ldap_rename($ldap, $this->dn, $this->newRdn, null, $this->deleteOldRdn);
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if ($success) {
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return Importer::formatMessage('INFO', _('Rename successful!'), htmlspecialchars($this->dn));
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}
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throw new LAMException(_('Could not rename the entry.') . '<br>' . $this->dn, getExtendedLDAPErrorMessage($ldap));
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}
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}
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/**
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* Deletes an LDAP entry.
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*
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* @author Roland Gruber
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*/
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class DeleteEntryTask implements ImporterTask {
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private $dn = '';
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/**
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* Constructor
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*
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* @param string $dn DN
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*/
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public function __construct($dn) {
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$this->dn = $dn;
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}
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/**
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* {@inheritDoc}
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* @see \LAM\TOOLS\IMPORT_EXPORT\ImporterTask::run()
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*/
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public function run() {
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$ldap = $_SESSION['ldap']->server();
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$success = @ldap_delete($ldap, $this->dn);
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if ($success) {
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return Importer::formatMessage('INFO', sprintf(_('Successfully deleted DN %s'), $this->dn), '');
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}
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throw new LAMException(_('Could not delete the entry.') . '<br>' . $this->dn, getExtendedLDAPErrorMessage($ldap));
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}
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}
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/**
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* Combines multiple import tasks.
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*
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* @author Roland Gruber
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*/
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class MultiTask implements ImporterTask {
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/**
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* @var ImporterTask[] tasks
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*/
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private $tasks = array();
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/**
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* @var string DN
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*/
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private $dn = null;
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/**
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* Constructor
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*
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* @param ImporterTask[] $tasks tasks
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*/
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public function __construct($tasks, $dn) {
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$this->tasks = $tasks;
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$this->dn = $dn;
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}
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/**
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* {@inheritDoc}
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* @see \LAM\TOOLS\IMPORT_EXPORT\ImporterTask::run()
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*/
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public function run() {
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foreach ($this->tasks as $task) {
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$task->run();
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}
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return Importer::formatMessage('INFO', _('LDAP operation successful.'), htmlspecialchars($this->dn));
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}
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/**
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* Returns the list of subtasks.
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*
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* @return ImporterTask[]
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*/
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public function getTasks() {
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return $this->tasks;
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}
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}
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/**
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* Adds attributes to an existing LDAP entry.
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*
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* @author Roland Gruber
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*/
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class AddAttributesTask implements ImporterTask {
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private $dn = '';
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private $attributes = array();
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/**
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* Constructor
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*
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* @param string $dn DN
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* @param array[string[]] $attributes list of attributes
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*/
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public function __construct($dn, $attributes) {
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$this->dn = $dn;
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$this->attributes = $attributes;
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}
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/**
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* {@inheritDoc}
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* @see \LAM\TOOLS\IMPORT_EXPORT\ImporterTask::run()
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*/
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public function run() {
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$ldap = $_SESSION['ldap']->server();
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$success = @ldap_mod_add($ldap, $this->dn, $this->attributes);
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if ($success) {
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return '';
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}
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throw new LAMException(sprintf(_('Was unable to create DN: %s.'), $this->dn), getExtendedLDAPErrorMessage($ldap));
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}
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/**
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* Returns the DN.
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*
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* @return string DN
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*/
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public function getDn() {
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return $this->dn;
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}
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/**
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* Returns the attributes to add.
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*
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* @return string[] attributes (array('attr' => array('val1', 'val2')))
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*/
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public function getAttributes() {
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return $this->attributes;
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}
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}
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/**
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* Deletes attributes from an existing LDAP entry.
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*
|
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* @author Roland Gruber
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*/
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class DeleteAttributesTask implements ImporterTask {
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private $dn = '';
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private $attributes = array();
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private $attributeName = null;
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/**
|
|
* Constructor
|
|
*
|
|
* @param string $dn DN
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* @param string $attributeName attribute name
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|
* @param array[string[]] $attributes list of attributes
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*/
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public function __construct($dn, $attributeName, $attributes) {
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$this->dn = $dn;
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$this->attributeName = $attributeName;
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$this->attributes = $attributes;
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}
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|
|
|
/**
|
|
* {@inheritDoc}
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|
* @see \LAM\TOOLS\IMPORT_EXPORT\ImporterTask::run()
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|
*/
|
|
public function run() {
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|
$ldap = $_SESSION['ldap']->server();
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if (!empty($this->attributes)) {
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$success = @ldap_mod_del($ldap, $this->dn, $this->attributes);
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}
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else {
|
|
$success = @ldap_modify($ldap, $this->dn, array($this->attributeName => array()));
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|
}
|
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if ($success) {
|
|
return '';
|
|
}
|
|
throw new LAMException(sprintf(_('Was unable to create DN: %s.'), $this->dn), getExtendedLDAPErrorMessage($ldap));
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}
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|
|
|
/**
|
|
* Returns the DN.
|
|
*
|
|
* @return string DN
|
|
*/
|
|
public function getDn() {
|
|
return $this->dn;
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}
|
|
|
|
/**
|
|
* Returns the attributes to add.
|
|
*
|
|
* @return string[] attributes (array('attr' => array('val1', 'val2')))
|
|
*/
|
|
public function getAttributes() {
|
|
return $this->attributes;
|
|
}
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|
|
|
/**
|
|
* Returns the attributes name.
|
|
*
|
|
* @return string name
|
|
*/
|
|
public function getAttributeName() {
|
|
return $this->attributeName;
|
|
}
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|
|
|
}
|
|
|
|
/**
|
|
* Replaces attributes in an existing LDAP entry.
|
|
*
|
|
* @author Roland Gruber
|
|
*/
|
|
class ReplaceAttributesTask implements ImporterTask {
|
|
|
|
private $dn = '';
|
|
private $attributes = array();
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* @param string $dn DN
|
|
* @param array[string[]] $attributes list of attributes
|
|
*/
|
|
public function __construct($dn, $attributes) {
|
|
$this->dn = $dn;
|
|
$this->attributes = $attributes;
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
* @see \LAM\TOOLS\IMPORT_EXPORT\ImporterTask::run()
|
|
*/
|
|
public function run() {
|
|
$ldap = $_SESSION['ldap']->server();
|
|
$success = @ldap_modify($ldap, $this->dn, $this->attributes);
|
|
if ($success) {
|
|
return '';
|
|
}
|
|
throw new LAMException(sprintf(_('Was unable to create DN: %s.'), $this->dn), getExtendedLDAPErrorMessage($ldap));
|
|
}
|
|
|
|
/**
|
|
* Returns the DN.
|
|
*
|
|
* @return string DN
|
|
*/
|
|
public function getDn() {
|
|
return $this->dn;
|
|
}
|
|
|
|
/**
|
|
* Returns the attributes to add.
|
|
*
|
|
* @return string[] attributes (array('attr' => array('val1', 'val2')))
|
|
*/
|
|
public function getAttributes() {
|
|
return $this->attributes;
|
|
}
|
|
|
|
/**
|
|
* Returns the attributes name.
|
|
*
|
|
* @return string name
|
|
*/
|
|
public function getAttributeName() {
|
|
return $this->attributeName;
|
|
}
|
|
|
|
}
|
|
|
|
?>
|