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1828 lines
89 KiB
1828 lines
89 KiB
2 years ago
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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle 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 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle 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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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* @package moodlecore
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* @subpackage backup-dbops
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* @copyright 2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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/**
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* Base abstract class for all the helper classes providing DB operations
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*
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* TODO: Finish phpdocs
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*/
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abstract class restore_dbops {
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/**
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* Keep cache of backup records.
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* @var array
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* @todo MDL-25290 static should be replaced with MUC code.
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*/
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private static $backupidscache = array();
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/**
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* Keep track of backup ids which are cached.
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* @var array
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* @todo MDL-25290 static should be replaced with MUC code.
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*/
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private static $backupidsexist = array();
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/**
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* Count is expensive, so manually keeping track of
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* backupidscache, to avoid memory issues.
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* @var int
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* @todo MDL-25290 static should be replaced with MUC code.
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*/
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private static $backupidscachesize = 2048;
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/**
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* Count is expensive, so manually keeping track of
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* backupidsexist, to avoid memory issues.
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* @var int
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* @todo MDL-25290 static should be replaced with MUC code.
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*/
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private static $backupidsexistsize = 10240;
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/**
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* Slice backupids cache to add more data.
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* @var int
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* @todo MDL-25290 static should be replaced with MUC code.
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*/
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private static $backupidsslice = 512;
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/**
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* Return one array containing all the tasks that have been included
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* in the restore process. Note that these tasks aren't built (they
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* haven't steps nor ids data available)
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*/
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public static function get_included_tasks($restoreid) {
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$rc = restore_controller_dbops::load_controller($restoreid);
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$tasks = $rc->get_plan()->get_tasks();
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$includedtasks = array();
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foreach ($tasks as $key => $task) {
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// Calculate if the task is being included
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$included = false;
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// blocks, based in blocks setting and parent activity/course
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if ($task instanceof restore_block_task) {
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if (!$task->get_setting_value('blocks')) { // Blocks not included, continue
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continue;
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}
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$parent = basename(dirname(dirname($task->get_taskbasepath())));
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if ($parent == 'course') { // Parent is course, always included if present
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$included = true;
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} else { // Look for activity_included setting
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$included = $task->get_setting_value($parent . '_included');
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}
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// ativities, based on included setting
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} else if ($task instanceof restore_activity_task) {
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$included = $task->get_setting_value('included');
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// sections, based on included setting
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} else if ($task instanceof restore_section_task) {
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$included = $task->get_setting_value('included');
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// course always included if present
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} else if ($task instanceof restore_course_task) {
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$included = true;
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}
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// If included, add it
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if ($included) {
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$includedtasks[] = clone($task); // A clone is enough. In fact we only need the basepath.
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}
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}
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$rc->destroy(); // Always need to destroy.
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return $includedtasks;
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}
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/**
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* Load one inforef.xml file to backup_ids table for future reference
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*
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* @param string $restoreid Restore id
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* @param string $inforeffile File path
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* @param \core\progress\base $progress Progress tracker
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*/
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public static function load_inforef_to_tempids($restoreid, $inforeffile,
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\core\progress\base $progress = null) {
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if (!file_exists($inforeffile)) { // Shouldn't happen ever, but...
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throw new backup_helper_exception('missing_inforef_xml_file', $inforeffile);
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}
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// Set up progress tracking (indeterminate).
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if (!$progress) {
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$progress = new \core\progress\none();
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}
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$progress->start_progress('Loading inforef.xml file');
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// Let's parse, custom processor will do its work, sending info to DB
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$xmlparser = new progressive_parser();
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$xmlparser->set_file($inforeffile);
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$xmlprocessor = new restore_inforef_parser_processor($restoreid);
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$xmlparser->set_processor($xmlprocessor);
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$xmlparser->set_progress($progress);
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$xmlparser->process();
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// Finish progress
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$progress->end_progress();
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}
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/**
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* Load the needed role.xml file to backup_ids table for future reference
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*/
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public static function load_roles_to_tempids($restoreid, $rolesfile) {
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if (!file_exists($rolesfile)) { // Shouldn't happen ever, but...
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throw new backup_helper_exception('missing_roles_xml_file', $rolesfile);
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}
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// Let's parse, custom processor will do its work, sending info to DB
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$xmlparser = new progressive_parser();
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$xmlparser->set_file($rolesfile);
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$xmlprocessor = new restore_roles_parser_processor($restoreid);
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$xmlparser->set_processor($xmlprocessor);
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$xmlparser->process();
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}
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/**
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* Precheck the loaded roles, return empty array if everything is ok, and
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* array with 'errors', 'warnings' elements (suitable to be used by restore_prechecks)
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* with any problem found. At the same time, store all the mapping into backup_ids_temp
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* and also put the information into $rolemappings (controller->info), so it can be reworked later by
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* post-precheck stages while at the same time accept modified info in the same object coming from UI
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*/
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public static function precheck_included_roles($restoreid, $courseid, $userid, $samesite, $rolemappings) {
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global $DB;
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$problems = array(); // To store warnings/errors
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// Get loaded roles from backup_ids
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$rs = $DB->get_recordset('backup_ids_temp', array('backupid' => $restoreid, 'itemname' => 'role'), '', 'itemid, info');
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foreach ($rs as $recrole) {
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// If the rolemappings->modified flag is set, that means that we are coming from
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// manually modified mappings (by UI), so accept those mappings an put them to backup_ids
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if ($rolemappings->modified) {
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$target = $rolemappings->mappings[$recrole->itemid]->targetroleid;
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self::set_backup_ids_record($restoreid, 'role', $recrole->itemid, $target);
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// Else, we haven't any info coming from UI, let's calculate the mappings, matching
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// in multiple ways and checking permissions. Note mapping to 0 means "skip"
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} else {
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$role = (object)backup_controller_dbops::decode_backup_temp_info($recrole->info);
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$match = self::get_best_assignable_role($role, $courseid, $userid, $samesite);
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// Send match to backup_ids
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self::set_backup_ids_record($restoreid, 'role', $recrole->itemid, $match);
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// Build the rolemappings element for controller
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unset($role->id);
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unset($role->nameincourse);
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$role->targetroleid = $match;
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$rolemappings->mappings[$recrole->itemid] = $role;
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// Prepare warning if no match found
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if (!$match) {
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$problems['warnings'][] = get_string('cannotfindassignablerole', 'backup', $role->name);
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}
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}
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}
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$rs->close();
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return $problems;
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}
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/**
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* Return cached backup id's
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*
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* @param int $restoreid id of backup
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* @param string $itemname name of the item
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* @param int $itemid id of item
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* @return array backup id's
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* @todo MDL-25290 replace static backupids* with MUC code
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*/
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protected static function get_backup_ids_cached($restoreid, $itemname, $itemid) {
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global $DB;
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$key = "$itemid $itemname $restoreid";
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// If record exists in cache then return.
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if (isset(self::$backupidsexist[$key]) && isset(self::$backupidscache[$key])) {
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// Return a copy of cached data, to avoid any alterations in cached data.
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return clone self::$backupidscache[$key];
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}
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// Clean cache, if it's full.
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if (self::$backupidscachesize <= 0) {
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// Remove some records, to keep memory in limit.
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self::$backupidscache = array_slice(self::$backupidscache, self::$backupidsslice, null, true);
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self::$backupidscachesize = self::$backupidscachesize + self::$backupidsslice;
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}
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if (self::$backupidsexistsize <= 0) {
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self::$backupidsexist = array_slice(self::$backupidsexist, self::$backupidsslice, null, true);
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self::$backupidsexistsize = self::$backupidsexistsize + self::$backupidsslice;
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}
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// Retrive record from database.
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$record = array(
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'backupid' => $restoreid,
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'itemname' => $itemname,
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'itemid' => $itemid
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);
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if ($dbrec = $DB->get_record('backup_ids_temp', $record)) {
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self::$backupidsexist[$key] = $dbrec->id;
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self::$backupidscache[$key] = $dbrec;
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self::$backupidscachesize--;
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self::$backupidsexistsize--;
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return $dbrec;
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} else {
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return false;
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}
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}
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/**
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* Cache backup ids'
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*
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* @param int $restoreid id of backup
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* @param string $itemname name of the item
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* @param int $itemid id of item
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* @param array $extrarecord extra record which needs to be updated
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* @return void
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* @todo MDL-25290 replace static BACKUP_IDS_* with MUC code
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*/
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protected static function set_backup_ids_cached($restoreid, $itemname, $itemid, $extrarecord) {
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global $DB;
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$key = "$itemid $itemname $restoreid";
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$record = array(
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'backupid' => $restoreid,
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'itemname' => $itemname,
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'itemid' => $itemid,
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);
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// If record is not cached then add one.
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if (!isset(self::$backupidsexist[$key])) {
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// If we have this record in db, then just update this.
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if ($existingrecord = $DB->get_record('backup_ids_temp', $record)) {
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self::$backupidsexist[$key] = $existingrecord->id;
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self::$backupidsexistsize--;
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self::update_backup_cached_record($record, $extrarecord, $key, $existingrecord);
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} else {
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// Add new record to cache and db.
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$recorddefault = array (
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'newitemid' => 0,
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'parentitemid' => null,
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'info' => null);
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$record = array_merge($record, $recorddefault, $extrarecord);
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$record['id'] = $DB->insert_record('backup_ids_temp', $record);
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self::$backupidsexist[$key] = $record['id'];
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self::$backupidsexistsize--;
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if (self::$backupidscachesize > 0) {
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// Cache new records if we haven't got many yet.
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self::$backupidscache[$key] = (object) $record;
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self::$backupidscachesize--;
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}
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}
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} else {
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self::update_backup_cached_record($record, $extrarecord, $key);
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}
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}
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/**
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* Updates existing backup record
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*
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* @param array $record record which needs to be updated
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* @param array $extrarecord extra record which needs to be updated
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* @param string $key unique key which is used to identify cached record
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* @param stdClass $existingrecord (optional) existing record
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*/
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protected static function update_backup_cached_record($record, $extrarecord, $key, $existingrecord = null) {
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global $DB;
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// Update only if extrarecord is not empty.
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if (!empty($extrarecord)) {
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$extrarecord['id'] = self::$backupidsexist[$key];
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$DB->update_record('backup_ids_temp', $extrarecord);
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// Update existing cache or add new record to cache.
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if (isset(self::$backupidscache[$key])) {
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$record = array_merge((array)self::$backupidscache[$key], $extrarecord);
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self::$backupidscache[$key] = (object) $record;
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} else if (self::$backupidscachesize > 0) {
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if ($existingrecord) {
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self::$backupidscache[$key] = $existingrecord;
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} else {
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// Retrive record from database and cache updated records.
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self::$backupidscache[$key] = $DB->get_record('backup_ids_temp', $record);
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}
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$record = array_merge((array)self::$backupidscache[$key], $extrarecord);
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self::$backupidscache[$key] = (object) $record;
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self::$backupidscachesize--;
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}
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}
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}
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/**
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||
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* Reset the ids caches completely
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*
|
||
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* Any destructive operation (partial delete, truncate, drop or recreate) performed
|
||
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* with the backup_ids table must cause the backup_ids caches to be
|
||
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* invalidated by calling this method. See MDL-33630.
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||
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*
|
||
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* Note that right now, the only operation of that type is the recreation
|
||
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* (drop & restore) of the table that may happen once the prechecks have ended. All
|
||
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* the rest of operations are always routed via {@link set_backup_ids_record()}, 1 by 1,
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||
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* keeping the caches on sync.
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||
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*
|
||
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* @todo MDL-25290 static should be replaced with MUC code.
|
||
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*/
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||
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public static function reset_backup_ids_cached() {
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// Reset the ids cache.
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||
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$cachetoadd = count(self::$backupidscache);
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||
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self::$backupidscache = array();
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|
|
self::$backupidscachesize = self::$backupidscachesize + $cachetoadd;
|
||
|
|
// Reset the exists cache.
|
||
|
|
$existstoadd = count(self::$backupidsexist);
|
||
|
|
self::$backupidsexist = array();
|
||
|
|
self::$backupidsexistsize = self::$backupidsexistsize + $existstoadd;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Given one role, as loaded from XML, perform the best possible matching against the assignable
|
||
|
|
* roles, using different fallback alternatives (shortname, archetype, editingteacher => teacher, defaultcourseroleid)
|
||
|
|
* returning the id of the best matching role or 0 if no match is found
|
||
|
|
*/
|
||
|
|
protected static function get_best_assignable_role($role, $courseid, $userid, $samesite) {
|
||
|
|
global $CFG, $DB;
|
||
|
|
|
||
|
|
// Gather various information about roles
|
||
|
|
$coursectx = context_course::instance($courseid);
|
||
|
|
$assignablerolesshortname = get_assignable_roles($coursectx, ROLENAME_SHORT, false, $userid);
|
||
|
|
|
||
|
|
// Note: under 1.9 we had one function restore_samerole() that performed one complete
|
||
|
|
// matching of roles (all caps) and if match was found the mapping was availabe bypassing
|
||
|
|
// any assignable_roles() security. IMO that was wrong and we must not allow such
|
||
|
|
// mappings anymore. So we have left that matching strategy out in 2.0
|
||
|
|
|
||
|
|
// Empty assignable roles, mean no match possible
|
||
|
|
if (empty($assignablerolesshortname)) {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Match by shortname
|
||
|
|
if ($match = array_search($role->shortname, $assignablerolesshortname)) {
|
||
|
|
return $match;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Match by archetype
|
||
|
|
list($in_sql, $in_params) = $DB->get_in_or_equal(array_keys($assignablerolesshortname));
|
||
|
|
$params = array_merge(array($role->archetype), $in_params);
|
||
|
|
if ($rec = $DB->get_record_select('role', "archetype = ? AND id $in_sql", $params, 'id', IGNORE_MULTIPLE)) {
|
||
|
|
return $rec->id;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Match editingteacher to teacher (happens a lot, from 1.9)
|
||
|
|
if ($role->shortname == 'editingteacher' && in_array('teacher', $assignablerolesshortname)) {
|
||
|
|
return array_search('teacher', $assignablerolesshortname);
|
||
|
|
}
|
||
|
|
|
||
|
|
// No match, return 0
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Process the loaded roles, looking for their best mapping or skipping
|
||
|
|
* Any error will cause exception. Note this is one wrapper over
|
||
|
|
* precheck_included_roles, that contains all the logic, but returns
|
||
|
|
* errors/warnings instead and is executed as part of the restore prechecks
|
||
|
|
*/
|
||
|
|
public static function process_included_roles($restoreid, $courseid, $userid, $samesite, $rolemappings) {
|
||
|
|
global $DB;
|
||
|
|
|
||
|
|
// Just let precheck_included_roles() to do all the hard work
|
||
|
|
$problems = self::precheck_included_roles($restoreid, $courseid, $userid, $samesite, $rolemappings);
|
||
|
|
|
||
|
|
// With problems of type error, throw exception, shouldn't happen if prechecks executed
|
||
|
|
if (array_key_exists('errors', $problems)) {
|
||
|
|
throw new restore_dbops_exception('restore_problems_processing_roles', null, implode(', ', $problems['errors']));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Load the needed users.xml file to backup_ids table for future reference
|
||
|
|
*
|
||
|
|
* @param string $restoreid Restore id
|
||
|
|
* @param string $usersfile File path
|
||
|
|
* @param \core\progress\base $progress Progress tracker
|
||
|
|
*/
|
||
|
|
public static function load_users_to_tempids($restoreid, $usersfile,
|
||
|
|
\core\progress\base $progress = null) {
|
||
|
|
|
||
|
|
if (!file_exists($usersfile)) { // Shouldn't happen ever, but...
|
||
|
|
throw new backup_helper_exception('missing_users_xml_file', $usersfile);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Set up progress tracking (indeterminate).
|
||
|
|
if (!$progress) {
|
||
|
|
$progress = new \core\progress\none();
|
||
|
|
}
|
||
|
|
$progress->start_progress('Loading users into temporary table');
|
||
|
|
|
||
|
|
// Let's parse, custom processor will do its work, sending info to DB
|
||
|
|
$xmlparser = new progressive_parser();
|
||
|
|
$xmlparser->set_file($usersfile);
|
||
|
|
$xmlprocessor = new restore_users_parser_processor($restoreid);
|
||
|
|
$xmlparser->set_processor($xmlprocessor);
|
||
|
|
$xmlparser->set_progress($progress);
|
||
|
|
$xmlparser->process();
|
||
|
|
|
||
|
|
// Finish progress.
|
||
|
|
$progress->end_progress();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Load the needed questions.xml file to backup_ids table for future reference
|
||
|
|
*/
|
||
|
|
public static function load_categories_and_questions_to_tempids($restoreid, $questionsfile) {
|
||
|
|
|
||
|
|
if (!file_exists($questionsfile)) { // Shouldn't happen ever, but...
|
||
|
|
throw new backup_helper_exception('missing_questions_xml_file', $questionsfile);
|
||
|
|
}
|
||
|
|
// Let's parse, custom processor will do its work, sending info to DB
|
||
|
|
$xmlparser = new progressive_parser();
|
||
|
|
$xmlparser->set_file($questionsfile);
|
||
|
|
$xmlprocessor = new restore_questions_parser_processor($restoreid);
|
||
|
|
$xmlparser->set_processor($xmlprocessor);
|
||
|
|
$xmlparser->process();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check all the included categories and questions, deciding the action to perform
|
||
|
|
* for each one (mapping / creation) and returning one array of problems in case
|
||
|
|
* something is wrong.
|
||
|
|
*
|
||
|
|
* There are some basic rules that the method below will always try to enforce:
|
||
|
|
*
|
||
|
|
* Rule1: Targets will be, always, calculated for *whole* question banks (a.k.a. contexid source),
|
||
|
|
* so, given 2 question categories belonging to the same bank, their target bank will be
|
||
|
|
* always the same. If not, we can be incurring into "fragmentation", leading to random/cloze
|
||
|
|
* problems (qtypes having "child" questions).
|
||
|
|
*
|
||
|
|
* Rule2: The 'moodle/question:managecategory' and 'moodle/question:add' capabilities will be
|
||
|
|
* checked before creating any category/question respectively and, if the cap is not allowed
|
||
|
|
* into upper contexts (system, coursecat)) but in lower ones (course), the *whole* question bank
|
||
|
|
* will be created there.
|
||
|
|
*
|
||
|
|
* Rule3: Coursecat question banks not existing in the target site will be created as course
|
||
|
|
* (lower ctx) question banks, never as "guessed" coursecat question banks base on depth or so.
|
||
|
|
*
|
||
|
|
* Rule4: System question banks will be created at system context if user has perms to do so. Else they
|
||
|
|
* will created as course (lower ctx) question banks (similary to rule3). In other words, course ctx
|
||
|
|
* if always a fallback for system and coursecat question banks.
|
||
|
|
*
|
||
|
|
* Also, there are some notes to clarify the scope of this method:
|
||
|
|
*
|
||
|
|
* Note1: This method won't create any question category nor question at all. It simply will calculate
|
||
|
|
* which actions (create/map) must be performed for each element and where, validating that all those
|
||
|
|
* actions are doable by the user executing the restore operation. Any problem found will be
|
||
|
|
* returned in the problems array, causing the restore process to stop with error.
|
||
|
|
*
|
||
|
|
* Note2: To decide if one question bank (all its question categories and questions) is going to be remapped,
|
||
|
|
* then all the categories and questions must exist in the same target bank. If able to do so, missing
|
||
|
|
* qcats and qs will be created (rule2). But if, at the end, something is missing, the whole question bank
|
||
|
|
* will be recreated at course ctx (rule1), no matter if that duplicates some categories/questions.
|
||
|
|
*
|
||
|
|
* Note3: We'll be using the newitemid column in the temp_ids table to store the action to be performed
|
||
|
|
* with each question category and question. newitemid = 0 means the qcat/q needs to be created and
|
||
|
|
* any other value means the qcat/q is mapped. Also, for qcats, parentitemid will contain the target
|
||
|
|
* context where the categories have to be created (but for module contexts where we'll keep the old
|
||
|
|
* one until the activity is created)
|
||
|
|
*
|
||
|
|
* Note4: All these "actions" will be "executed" later by {@link restore_create_categories_and_questions}
|
||
|
|
*/
|
||
|
|
public static function precheck_categories_and_questions($restoreid, $courseid, $userid, $samesite) {
|
||
|
|
|
||
|
|
$problems = array();
|
||
|
|
|
||
|
|
// TODO: Check all qs, looking their qtypes are restorable
|
||
|
|
|
||
|
|
// Precheck all qcats and qs looking for target contexts / warnings / errors
|
||
|
|
list($syserr, $syswarn) = self::prechek_precheck_qbanks_by_level($restoreid, $courseid, $userid, $samesite, CONTEXT_SYSTEM);
|
||
|
|
list($caterr, $catwarn) = self::prechek_precheck_qbanks_by_level($restoreid, $courseid, $userid, $samesite, CONTEXT_COURSECAT);
|
||
|
|
list($couerr, $couwarn) = self::prechek_precheck_qbanks_by_level($restoreid, $courseid, $userid, $samesite, CONTEXT_COURSE);
|
||
|
|
list($moderr, $modwarn) = self::prechek_precheck_qbanks_by_level($restoreid, $courseid, $userid, $samesite, CONTEXT_MODULE);
|
||
|
|
|
||
|
|
// Acummulate and handle errors and warnings
|
||
|
|
$errors = array_merge($syserr, $caterr, $couerr, $moderr);
|
||
|
|
$warnings = array_merge($syswarn, $catwarn, $couwarn, $modwarn);
|
||
|
|
if (!empty($errors)) {
|
||
|
|
$problems['errors'] = $errors;
|
||
|
|
}
|
||
|
|
if (!empty($warnings)) {
|
||
|
|
$problems['warnings'] = $warnings;
|
||
|
|
}
|
||
|
|
return $problems;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This function will process all the question banks present in restore
|
||
|
|
* at some contextlevel (from CONTEXT_SYSTEM to CONTEXT_MODULE), finding
|
||
|
|
* the target contexts where each bank will be restored and returning
|
||
|
|
* warnings/errors as needed.
|
||
|
|
*
|
||
|
|
* Some contextlevels (system, coursecat), will delegate process to
|
||
|
|
* course level if any problem is found (lack of permissions, non-matching
|
||
|
|
* target context...). Other contextlevels (course, module) will
|
||
|
|
* cause return error if some problem is found.
|
||
|
|
*
|
||
|
|
* At the end, if no errors were found, all the categories in backup_temp_ids
|
||
|
|
* will be pointing (parentitemid) to the target context where they must be
|
||
|
|
* created later in the restore process.
|
||
|
|
*
|
||
|
|
* Note: at the time these prechecks are executed, activities haven't been
|
||
|
|
* created yet so, for CONTEXT_MODULE banks, we keep the old contextid
|
||
|
|
* in the parentitemid field. Once the activity (and its context) has been
|
||
|
|
* created, we'll update that context in the required qcats
|
||
|
|
*
|
||
|
|
* Caller {@link precheck_categories_and_questions} will, simply, execute
|
||
|
|
* this function for all the contextlevels, acting as a simple controller
|
||
|
|
* of warnings and errors.
|
||
|
|
*
|
||
|
|
* The function returns 2 arrays, one containing errors and another containing
|
||
|
|
* warnings. Both empty if no errors/warnings are found.
|
||
|
|
*
|
||
|
|
* @param int $restoreid The restore ID
|
||
|
|
* @param int $courseid The ID of the course
|
||
|
|
* @param int $userid The id of the user doing the restore
|
||
|
|
* @param bool $samesite True if restore is to same site
|
||
|
|
* @param int $contextlevel (CONTEXT_SYSTEM, etc.)
|
||
|
|
* @return array A separate list of all error and warnings detected
|
||
|
|
*/
|
||
|
|
public static function prechek_precheck_qbanks_by_level($restoreid, $courseid, $userid, $samesite, $contextlevel) {
|
||
|
|
global $DB;
|
||
|
|
|
||
|
|
// To return any errors and warnings found
|
||
|
|
$errors = array();
|
||
|
|
$warnings = array();
|
||
|
|
|
||
|
|
// Specify which fallbacks must be performed
|
||
|
|
$fallbacks = array(
|
||
|
|
CONTEXT_SYSTEM => CONTEXT_COURSE,
|
||
|
|
CONTEXT_COURSECAT => CONTEXT_COURSE);
|
||
|
|
|
||
|
|
$rc = restore_controller_dbops::load_controller($restoreid);
|
||
|
|
$restoreinfo = $rc->get_info();
|
||
|
|
$rc->destroy(); // Always need to destroy.
|
||
|
|
$backuprelease = floatval($restoreinfo->backup_release);
|
||
|
|
preg_match('/(\d{8})/', $restoreinfo->moodle_release, $matches);
|
||
|
|
$backupbuild = (int)$matches[1];
|
||
|
|
$after35 = false;
|
||
|
|
if ($backuprelease >= 3.5 && $backupbuild > 20180205) {
|
||
|
|
$after35 = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// For any contextlevel, follow this process logic:
|
||
|
|
//
|
||
|
|
// 0) Iterate over each context (qbank)
|
||
|
|
// 1) Iterate over each qcat in the context, matching by stamp for the found target context
|
||
|
|
// 2a) No match, check if user can create qcat and q
|
||
|
|
// 3a) User can, mark the qcat and all dependent qs to be created in that target context
|
||
|
|
// 3b) User cannot, check if we are in some contextlevel with fallback
|
||
|
|
// 4a) There is fallback, move ALL the qcats to fallback, warn. End qcat loop
|
||
|
|
// 4b) No fallback, error. End qcat loop.
|
||
|
|
// 2b) Match, mark qcat to be mapped and iterate over each q, matching by stamp and version
|
||
|
|
// 5a) No match, check if user can add q
|
||
|
|
// 6a) User can, mark the q to be created
|
||
|
|
// 6b) User cannot, check if we are in some contextlevel with fallback
|
||
|
|
// 7a) There is fallback, move ALL the qcats to fallback, warn. End qcat loop
|
||
|
|
// 7b) No fallback, error. End qcat loop
|
||
|
|
// 5b) Random question, must always create new.
|
||
|
|
// 5c) Match, mark q to be mapped
|
||
|
|
// 8) Check if backup is from Moodle >= 3.5 and error if more than one top-level category in the context.
|
||
|
|
|
||
|
|
// Get all the contexts (question banks) in restore for the given contextlevel
|
||
|
|
$contexts = self::restore_get_question_banks($restoreid, $contextlevel);
|
||
|
|
|
||
|
|
// 0) Iterate over each context (qbank)
|
||
|
|
foreach ($contexts as $contextid => $contextlevel) {
|
||
|
|
// Init some perms
|
||
|
|
$canmanagecategory = false;
|
||
|
|
$canadd = false;
|
||
|
|
// Top-level category counter.
|
||
|
|
$topcats = 0;
|
||
|
|
// get categories in context (bank)
|
||
|
|
$categories = self::restore_get_question_categories($restoreid, $contextid);
|
||
|
|
// cache permissions if $targetcontext is found
|
||
|
|
if ($targetcontext = self::restore_find_best_target_context($categories, $courseid, $contextlevel)) {
|
||
|
|
$canmanagecategory = has_capability('moodle/question:managecategory', $targetcontext, $userid);
|
||
|
|
$canadd = has_capability('moodle/question:add', $targetcontext, $userid);
|
||
|
|
}
|
||
|
|
// 1) Iterate over each qcat in the context, matching by stamp for the found target context
|
||
|
|
foreach ($categories as $category) {
|
||
|
|
if ($category->parent == 0) {
|
||
|
|
$topcats++;
|
||
|
|
}
|
||
|
|
|
||
|
|
$matchcat = false;
|
||
|
|
if ($targetcontext) {
|
||
|
|
$matchcat = $DB->get_record('question_categories', array(
|
||
|
|
'contextid' => $targetcontext->id,
|
||
|
|
'stamp' => $category->stamp));
|
||
|
|
}
|
||
|
|
// 2a) No match, check if user can create qcat and q
|
||
|
|
if (!$matchcat) {
|
||
|
|
// 3a) User can, mark the qcat and all dependent qs to be created in that target context
|
||
|
|
if ($canmanagecategory && $canadd) {
|
||
|
|
// Set parentitemid to targetcontext, BUT for CONTEXT_MODULE categories, where
|
||
|
|
// we keep the source contextid unmodified (for easier matching later when the
|
||
|
|
// activities are created)
|
||
|
|
$parentitemid = $targetcontext->id;
|
||
|
|
if ($contextlevel == CONTEXT_MODULE) {
|
||
|
|
$parentitemid = null; // null means "not modify" a.k.a. leave original contextid
|
||
|
|
}
|
||
|
|
self::set_backup_ids_record($restoreid, 'question_category', $category->id, 0, $parentitemid);
|
||
|
|
// Nothing else to mark, newitemid = 0 means create
|
||
|
|
|
||
|
|
// 3b) User cannot, check if we are in some contextlevel with fallback
|
||
|
|
} else {
|
||
|
|
// 4a) There is fallback, move ALL the qcats to fallback, warn. End qcat loop
|
||
|
|
if (array_key_exists($contextlevel, $fallbacks)) {
|
||
|
|
foreach ($categories as $movedcat) {
|
||
|
|
$movedcat->contextlevel = $fallbacks[$contextlevel];
|
||
|
|
self::set_backup_ids_record($restoreid, 'question_category', $movedcat->id, 0, $contextid, $movedcat);
|
||
|
|
// Warn about the performed fallback
|
||
|
|
$warnings[] = get_string('qcategory2coursefallback', 'backup', $movedcat);
|
||
|
|
}
|
||
|
|
|
||
|
|
// 4b) No fallback, error. End qcat loop.
|
||
|
|
} else {
|
||
|
|
$errors[] = get_string('qcategorycannotberestored', 'backup', $category);
|
||
|
|
}
|
||
|
|
break; // out from qcat loop (both 4a and 4b), we have decided about ALL categories in context (bank)
|
||
|
|
}
|
||
|
|
|
||
|
|
// 2b) Match, mark qcat to be mapped and iterate over each q, matching by stamp and version
|
||
|
|
} else {
|
||
|
|
self::set_backup_ids_record($restoreid, 'question_category', $category->id, $matchcat->id, $targetcontext->id);
|
||
|
|
$questions = self::restore_get_questions($restoreid, $category->id);
|
||
|
|
|
||
|
|
// Collect all the questions for this category into memory so we only talk to the DB once.
|
||
|
|
$questioncache = $DB->get_records_sql_menu("SELECT ".$DB->sql_concat('stamp', "' '", 'version').", id
|
||
|
|
FROM {question}
|
||
|
|
WHERE category = ?", array($matchcat->id));
|
||
|
|
|
||
|
|
foreach ($questions as $question) {
|
||
|
|
if (isset($questioncache[$question->stamp." ".$question->version])) {
|
||
|
|
$matchqid = $questioncache[$question->stamp." ".$question->version];
|
||
|
|
} else {
|
||
|
|
$matchqid = false;
|
||
|
|
}
|
||
|
|
// 5a) No match, check if user can add q
|
||
|
|
if (!$matchqid) {
|
||
|
|
// 6a) User can, mark the q to be created
|
||
|
|
if ($canadd) {
|
||
|
|
// Nothing to mark, newitemid means create
|
||
|
|
|
||
|
|
// 6b) User cannot, check if we are in some contextlevel with fallback
|
||
|
|
} else {
|
||
|
|
// 7a) There is fallback, move ALL the qcats to fallback, warn. End qcat loo
|
||
|
|
if (array_key_exists($contextlevel, $fallbacks)) {
|
||
|
|
foreach ($categories as $movedcat) {
|
||
|
|
$movedcat->contextlevel = $fallbacks[$contextlevel];
|
||
|
|
self::set_backup_ids_record($restoreid, 'question_category', $movedcat->id, 0, $contextid, $movedcat);
|
||
|
|
// Warn about the performed fallback
|
||
|
|
$warnings[] = get_string('question2coursefallback', 'backup', $movedcat);
|
||
|
|
}
|
||
|
|
|
||
|
|
// 7b) No fallback, error. End qcat loop
|
||
|
|
} else {
|
||
|
|
$errors[] = get_string('questioncannotberestored', 'backup', $question);
|
||
|
|
}
|
||
|
|
break 2; // out from qcat loop (both 7a and 7b), we have decided about ALL categories in context (bank)
|
||
|
|
}
|
||
|
|
|
||
|
|
// 5b) Random questions must always be newly created.
|
||
|
|
} else if ($question->qtype == 'random') {
|
||
|
|
// Nothing to mark, newitemid means create
|
||
|
|
|
||
|
|
// 5c) Match, mark q to be mapped.
|
||
|
|
} else {
|
||
|
|
self::set_backup_ids_record($restoreid, 'question', $question->id, $matchqid);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// 8) Check if backup is made on Moodle >= 3.5 and there are more than one top-level category in the context.
|
||
|
|
if ($after35 && $topcats > 1) {
|
||
|
|
$errors[] = get_string('restoremultipletopcats', 'question', $contextid);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return array($errors, $warnings);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return one array of contextid => contextlevel pairs
|
||
|
|
* of question banks to be checked for one given restore operation
|
||
|
|
* ordered from CONTEXT_SYSTEM downto CONTEXT_MODULE
|
||
|
|
* If contextlevel is specified, then only banks corresponding to
|
||
|
|
* that level are returned
|
||
|
|
*/
|
||
|
|
public static function restore_get_question_banks($restoreid, $contextlevel = null) {
|
||
|
|
global $DB;
|
||
|
|
|
||
|
|
$results = array();
|
||
|
|
$qcats = $DB->get_recordset_sql("SELECT itemid, parentitemid AS contextid, info
|
||
|
|
FROM {backup_ids_temp}
|
||
|
|
WHERE backupid = ?
|
||
|
|
AND itemname = 'question_category'", array($restoreid));
|
||
|
|
foreach ($qcats as $qcat) {
|
||
|
|
// If this qcat context haven't been acummulated yet, do that
|
||
|
|
if (!isset($results[$qcat->contextid])) {
|
||
|
|
$info = backup_controller_dbops::decode_backup_temp_info($qcat->info);
|
||
|
|
// Filter by contextlevel if necessary
|
||
|
|
if (is_null($contextlevel) || $contextlevel == $info->contextlevel) {
|
||
|
|
$results[$qcat->contextid] = $info->contextlevel;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$qcats->close();
|
||
|
|
// Sort by value (contextlevel from CONTEXT_SYSTEM downto CONTEXT_MODULE)
|
||
|
|
asort($results);
|
||
|
|
return $results;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return one array of question_category records for
|
||
|
|
* a given restore operation and one restore context (question bank)
|
||
|
|
*/
|
||
|
|
public static function restore_get_question_categories($restoreid, $contextid) {
|
||
|
|
global $DB;
|
||
|
|
|
||
|
|
$results = array();
|
||
|
|
$qcats = $DB->get_recordset_sql("SELECT itemid, info
|
||
|
|
FROM {backup_ids_temp}
|
||
|
|
WHERE backupid = ?
|
||
|
|
AND itemname = 'question_category'
|
||
|
|
AND parentitemid = ?", array($restoreid, $contextid));
|
||
|
|
foreach ($qcats as $qcat) {
|
||
|
|
$results[$qcat->itemid] = backup_controller_dbops::decode_backup_temp_info($qcat->info);
|
||
|
|
}
|
||
|
|
$qcats->close();
|
||
|
|
|
||
|
|
return $results;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Calculates the best context found to restore one collection of qcats,
|
||
|
|
* al them belonging to the same context (question bank), returning the
|
||
|
|
* target context found (object) or false
|
||
|
|
*/
|
||
|
|
public static function restore_find_best_target_context($categories, $courseid, $contextlevel) {
|
||
|
|
global $DB;
|
||
|
|
|
||
|
|
$targetcontext = false;
|
||
|
|
|
||
|
|
// Depending of $contextlevel, we perform different actions
|
||
|
|
switch ($contextlevel) {
|
||
|
|
// For system is easy, the best context is the system context
|
||
|
|
case CONTEXT_SYSTEM:
|
||
|
|
$targetcontext = context_system::instance();
|
||
|
|
break;
|
||
|
|
|
||
|
|
// For coursecat, we are going to look for stamps in all the
|
||
|
|
// course categories between CONTEXT_SYSTEM and CONTEXT_COURSE
|
||
|
|
// (i.e. in all the course categories in the path)
|
||
|
|
//
|
||
|
|
// And only will return one "best" target context if all the
|
||
|
|
// matches belong to ONE and ONLY ONE context. If multiple
|
||
|
|
// matches are found, that means that there is some annoying
|
||
|
|
// qbank "fragmentation" in the categories, so we'll fallback
|
||
|
|
// to create the qbank at course level
|
||
|
|
case CONTEXT_COURSECAT:
|
||
|
|
// Build the array of stamps we are going to match
|
||
|
|
$stamps = array();
|
||
|
|
foreach ($categories as $category) {
|
||
|
|
$stamps[] = $category->stamp;
|
||
|
|
}
|
||
|
|
$contexts = array();
|
||
|
|
// Build the array of contexts we are going to look
|
||
|
|
$systemctx = context_system::instance();
|
||
|
|
$coursectx = context_course::instance($courseid);
|
||
|
|
$parentctxs = $coursectx->get_parent_context_ids();
|
||
|
|
foreach ($parentctxs as $parentctx) {
|
||
|
|
// Exclude system context
|
||
|
|
if ($parentctx == $systemctx->id) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
$contexts[] = $parentctx;
|
||
|
|
}
|
||
|
|
if (!empty($stamps) && !empty($contexts)) {
|
||
|
|
// Prepare the query
|
||
|
|
list($stamp_sql, $stamp_params) = $DB->get_in_or_equal($stamps);
|
||
|
|
list($context_sql, $context_params) = $DB->get_in_or_equal($contexts);
|
||
|
|
$sql = "SELECT DISTINCT contextid
|
||
|
|
FROM {question_categories}
|
||
|
|
WHERE stamp $stamp_sql
|
||
|
|
AND contextid $context_sql";
|
||
|
|
$params = array_merge($stamp_params, $context_params);
|
||
|
|
$matchingcontexts = $DB->get_records_sql($sql, $params);
|
||
|
|
// Only if ONE and ONLY ONE context is found, use it as valid target
|
||
|
|
if (count($matchingcontexts) == 1) {
|
||
|
|
$targetcontext = context::instance_by_id(reset($matchingcontexts)->contextid);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
// For course is easy, the best context is the course context
|
||
|
|
case CONTEXT_COURSE:
|
||
|
|
$targetcontext = context_course::instance($courseid);
|
||
|
|
break;
|
||
|
|
|
||
|
|
// For module is easy, there is not best context, as far as the
|
||
|
|
// activity hasn't been created yet. So we return context course
|
||
|
|
// for them, so permission checks and friends will work. Note this
|
||
|
|
// case is handled by {@link prechek_precheck_qbanks_by_level}
|
||
|
|
// in an special way
|
||
|
|
case CONTEXT_MODULE:
|
||
|
|
$targetcontext = context_course::instance($courseid);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return $targetcontext;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return one array of question records for
|
||
|
|
* a given restore operation and one question category
|
||
|
|
*/
|
||
|
|
public static function restore_get_questions($restoreid, $qcatid) {
|
||
|
|
global $DB;
|
||
|
|
|
||
|
|
$results = array();
|
||
|
|
$qs = $DB->get_recordset_sql("SELECT itemid, info
|
||
|
|
FROM {backup_ids_temp}
|
||
|
|
WHERE backupid = ?
|
||
|
|
AND itemname = 'question'
|
||
|
|
AND parentitemid = ?", array($restoreid, $qcatid));
|
||
|
|
foreach ($qs as $q) {
|
||
|
|
$results[$q->itemid] = backup_controller_dbops::decode_backup_temp_info($q->info);
|
||
|
|
}
|
||
|
|
$qs->close();
|
||
|
|
return $results;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Given one component/filearea/context and
|
||
|
|
* optionally one source itemname to match itemids
|
||
|
|
* put the corresponding files in the pool
|
||
|
|
*
|
||
|
|
* If you specify a progress reporter, it will get called once per file with
|
||
|
|
* indeterminate progress.
|
||
|
|
*
|
||
|
|
* @param string $basepath the full path to the root of unzipped backup file
|
||
|
|
* @param string $restoreid the restore job's identification
|
||
|
|
* @param string $component
|
||
|
|
* @param string $filearea
|
||
|
|
* @param int $oldcontextid
|
||
|
|
* @param int $dfltuserid default $file->user if the old one can't be mapped
|
||
|
|
* @param string|null $itemname
|
||
|
|
* @param int|null $olditemid
|
||
|
|
* @param int|null $forcenewcontextid explicit value for the new contextid (skip mapping)
|
||
|
|
* @param bool $skipparentitemidctxmatch
|
||
|
|
* @param \core\progress\base $progress Optional progress reporter
|
||
|
|
* @return array of result object
|
||
|
|
*/
|
||
|
|
public static function send_files_to_pool($basepath, $restoreid, $component, $filearea,
|
||
|
|
$oldcontextid, $dfltuserid, $itemname = null, $olditemid = null,
|
||
|
|
$forcenewcontextid = null, $skipparentitemidctxmatch = false,
|
||
|
|
\core\progress\base $progress = null) {
|
||
|
|
global $DB, $CFG;
|
||
|
|
|
||
|
|
$backupinfo = backup_general_helper::get_backup_information(basename($basepath));
|
||
|
|
$includesfiles = $backupinfo->include_files;
|
||
|
|
|
||
|
|
$results = array();
|
||
|
|
|
||
|
|
if ($forcenewcontextid) {
|
||
|
|
// Some components can have "forced" new contexts (example: questions can end belonging to non-standard context mappings,
|
||
|
|
// with questions originally at system/coursecat context in source being restored to course context in target). So we need
|
||
|
|
// to be able to force the new contextid
|
||
|
|
$newcontextid = $forcenewcontextid;
|
||
|
|
} else {
|
||
|
|
// Get new context, must exist or this will fail
|
||
|
|
$newcontextrecord = self::get_backup_ids_record($restoreid, 'context', $oldcontextid);
|
||
|
|
if (!$newcontextrecord || !$newcontextrecord->newitemid) {
|
||
|
|
throw new restore_dbops_exception('unknown_context_mapping', $oldcontextid);
|
||
|
|
}
|
||
|
|
$newcontextid = $newcontextrecord->newitemid;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Sometimes it's possible to have not the oldcontextids stored into backup_ids_temp->parentitemid
|
||
|
|
// columns (because we have used them to store other information). This happens usually with
|
||
|
|
// all the question related backup_ids_temp records. In that case, it's safe to ignore that
|
||
|
|
// matching as far as we are always restoring for well known oldcontexts and olditemids
|
||
|
|
$parentitemctxmatchsql = ' AND i.parentitemid = f.contextid ';
|
||
|
|
if ($skipparentitemidctxmatch) {
|
||
|
|
$parentitemctxmatchsql = '';
|
||
|
|
}
|
||
|
|
|
||
|
|
// Important: remember how files have been loaded to backup_files_temp
|
||
|
|
// - info: contains the whole original object (times, names...)
|
||
|
|
// (all them being original ids as loaded from xml)
|
||
|
|
|
||
|
|
// itemname = null, we are going to match only by context, no need to use itemid (all them are 0)
|
||
|
|
if ($itemname == null) {
|
||
|
|
$sql = "SELECT id AS bftid, contextid, component, filearea, itemid, itemid AS newitemid, info
|
||
|
|
FROM {backup_files_temp}
|
||
|
|
WHERE backupid = ?
|
||
|
|
AND contextid = ?
|
||
|
|
AND component = ?
|
||
|
|
AND filearea = ?";
|
||
|
|
$params = array($restoreid, $oldcontextid, $component, $filearea);
|
||
|
|
|
||
|
|
// itemname not null, going to join with backup_ids to perform the old-new mapping of itemids
|
||
|
|
} else {
|
||
|
|
$sql = "SELECT f.id AS bftid, f.contextid, f.component, f.filearea, f.itemid, i.newitemid, f.info
|
||
|
|
FROM {backup_files_temp} f
|
||
|
|
JOIN {backup_ids_temp} i ON i.backupid = f.backupid
|
||
|
|
$parentitemctxmatchsql
|
||
|
|
AND i.itemid = f.itemid
|
||
|
|
WHERE f.backupid = ?
|
||
|
|
AND f.contextid = ?
|
||
|
|
AND f.component = ?
|
||
|
|
AND f.filearea = ?
|
||
|
|
AND i.itemname = ?";
|
||
|
|
$params = array($restoreid, $oldcontextid, $component, $filearea, $itemname);
|
||
|
|
if ($olditemid !== null) { // Just process ONE olditemid intead of the whole itemname
|
||
|
|
$sql .= ' AND i.itemid = ?';
|
||
|
|
$params[] = $olditemid;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$fs = get_file_storage(); // Get moodle file storage
|
||
|
|
$basepath = $basepath . '/files/';// Get backup file pool base
|
||
|
|
// Report progress before query.
|
||
|
|
if ($progress) {
|
||
|
|
$progress->progress();
|
||
|
|
}
|
||
|
|
$rs = $DB->get_recordset_sql($sql, $params);
|
||
|
|
foreach ($rs as $rec) {
|
||
|
|
// Report progress each time around loop.
|
||
|
|
if ($progress) {
|
||
|
|
$progress->progress();
|
||
|
|
}
|
||
|
|
|
||
|
|
$file = (object)backup_controller_dbops::decode_backup_temp_info($rec->info);
|
||
|
|
|
||
|
|
// ignore root dirs (they are created automatically)
|
||
|
|
if ($file->filepath == '/' && $file->filename == '.') {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
// set the best possible user
|
||
|
|
$mappeduser = self::get_backup_ids_record($restoreid, 'user', $file->userid);
|
||
|
|
$mappeduserid = !empty($mappeduser) ? $mappeduser->newitemid : $dfltuserid;
|
||
|
|
|
||
|
|
// dir found (and not root one), let's create it
|
||
|
|
if ($file->filename == '.') {
|
||
|
|
$fs->create_directory($newcontextid, $component, $filearea, $rec->newitemid, $file->filepath, $mappeduserid);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
// The file record to restore.
|
||
|
|
$file_record = array(
|
||
|
|
'contextid' => $newcontextid,
|
||
|
|
'component' => $component,
|
||
|
|
'filearea' => $filearea,
|
||
|
|
'itemid' => $rec->newitemid,
|
||
|
|
'filepath' => $file->filepath,
|
||
|
|
'filename' => $file->filename,
|
||
|
|
'timecreated' => $file->timecreated,
|
||
|
|
'timemodified'=> $file->timemodified,
|
||
|
|
'userid' => $mappeduserid,
|
||
|
|
'source' => $file->source,
|
||
|
|
'author' => $file->author,
|
||
|
|
'license' => $file->license,
|
||
|
|
'sortorder' => $file->sortorder
|
||
|
|
);
|
||
|
|
|
||
|
|
if (empty($file->repositoryid)) {
|
||
|
|
// If contenthash is empty then gracefully skip adding file.
|
||
|
|
if (empty($file->contenthash)) {
|
||
|
|
$result = new stdClass();
|
||
|
|
$result->code = 'file_missing_in_backup';
|
||
|
|
$result->message = sprintf('missing file (%s) contenthash in backup for component %s', $file->filename, $component);
|
||
|
|
$result->level = backup::LOG_WARNING;
|
||
|
|
$results[] = $result;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
// this is a regular file, it must be present in the backup pool
|
||
|
|
$backuppath = $basepath . backup_file_manager::get_backup_content_file_location($file->contenthash);
|
||
|
|
|
||
|
|
// Some file types do not include the files as they should already be
|
||
|
|
// present. We still need to create entries into the files table.
|
||
|
|
if ($includesfiles) {
|
||
|
|
// The file is not found in the backup.
|
||
|
|
if (!file_exists($backuppath)) {
|
||
|
|
$results[] = self::get_missing_file_result($file);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
// create the file in the filepool if it does not exist yet
|
||
|
|
if (!$fs->file_exists($newcontextid, $component, $filearea, $rec->newitemid, $file->filepath, $file->filename)) {
|
||
|
|
|
||
|
|
// If no license found, use default.
|
||
|
|
if ($file->license == null){
|
||
|
|
$file->license = $CFG->sitedefaultlicense;
|
||
|
|
}
|
||
|
|
|
||
|
|
$fs->create_file_from_pathname($file_record, $backuppath);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
// This backup does not include the files - they should be available in moodle filestorage already.
|
||
|
|
|
||
|
|
// Create the file in the filepool if it does not exist yet.
|
||
|
|
if (!$fs->file_exists($newcontextid, $component, $filearea, $rec->newitemid, $file->filepath, $file->filename)) {
|
||
|
|
|
||
|
|
// Even if a file has been deleted since the backup was made, the file metadata will remain in the
|
||
|
|
// files table, and the file will not be moved to the trashdir.
|
||
|
|
// Files are not cleared from the files table by cron until several days after deletion.
|
||
|
|
if ($foundfiles = $DB->get_records('files', array('contenthash' => $file->contenthash), '', '*', 0, 1)) {
|
||
|
|
// Only grab one of the foundfiles - the file content should be the same for all entries.
|
||
|
|
$foundfile = reset($foundfiles);
|
||
|
|
$fs->create_file_from_storedfile($file_record, $foundfile->id);
|
||
|
|
} else {
|
||
|
|
// A matching existing file record was not found in the database.
|
||
|
|
$results[] = self::get_missing_file_result($file);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// store the the new contextid and the new itemid in case we need to remap
|
||
|
|
// references to this file later
|
||
|
|
$DB->update_record('backup_files_temp', array(
|
||
|
|
'id' => $rec->bftid,
|
||
|
|
'newcontextid' => $newcontextid,
|
||
|
|
'newitemid' => $rec->newitemid), true);
|
||
|
|
|
||
|
|
} else {
|
||
|
|
// this is an alias - we can't create it yet so we stash it in a temp
|
||
|
|
// table and will let the final task to deal with it
|
||
|
|
if (!$fs->file_exists($newcontextid, $component, $filearea, $rec->newitemid, $file->filepath, $file->filename)) {
|
||
|
|
$info = new stdClass();
|
||
|
|
// oldfile holds the raw information stored in MBZ (including reference-related info)
|
||
|
|
$info->oldfile = $file;
|
||
|
|
// newfile holds the info for the new file_record with the context, user and itemid mapped
|
||
|
|
$info->newfile = (object) $file_record;
|
||
|
|
|
||
|
|
restore_dbops::set_backup_ids_record($restoreid, 'file_aliases_queue', $file->id, 0, null, $info);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$rs->close();
|
||
|
|
return $results;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns suitable entry to include in log when there is a missing file.
|
||
|
|
*
|
||
|
|
* @param stdClass $file File definition
|
||
|
|
* @return stdClass Log entry
|
||
|
|
*/
|
||
|
|
protected static function get_missing_file_result($file) {
|
||
|
|
$result = new stdClass();
|
||
|
|
$result->code = 'file_missing_in_backup';
|
||
|
|
$result->message = 'Missing file in backup: ' . $file->filepath . $file->filename .
|
||
|
|
' (old context ' . $file->contextid . ', component ' . $file->component .
|
||
|
|
', filearea ' . $file->filearea . ', old itemid ' . $file->itemid . ')';
|
||
|
|
$result->level = backup::LOG_WARNING;
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Given one restoreid, create in DB all the users present
|
||
|
|
* in backup_ids having newitemid = 0, as far as
|
||
|
|
* precheck_included_users() have left them there
|
||
|
|
* ready to be created. Also, annotate their newids
|
||
|
|
* once created for later reference.
|
||
|
|
*
|
||
|
|
* This function will start and end a new progress section in the progress
|
||
|
|
* object.
|
||
|
|
*
|
||
|
|
* @param string $basepath Base path of unzipped backup
|
||
|
|
* @param string $restoreid Restore ID
|
||
|
|
* @param int $userid Default userid for files
|
||
|
|
* @param \core\progress\base $progress Object used for progress tracking
|
||
|
|
*/
|
||
|
|
public static function create_included_users($basepath, $restoreid, $userid,
|
||
|
|
\core\progress\base $progress) {
|
||
|
|
global $CFG, $DB;
|
||
|
|
$progress->start_progress('Creating included users');
|
||
|
|
|
||
|
|
$authcache = array(); // Cache to get some bits from authentication plugins
|
||
|
|
$languages = get_string_manager()->get_list_of_translations(); // Get languages for quick search later
|
||
|
|
$themes = get_list_of_themes(); // Get themes for quick search later
|
||
|
|
|
||
|
|
// Iterate over all the included users with newitemid = 0, have to create them
|
||
|
|
$rs = $DB->get_recordset('backup_ids_temp', array('backupid' => $restoreid, 'itemname' => 'user', 'newitemid' => 0), '', 'itemid, parentitemid, info');
|
||
|
|
foreach ($rs as $recuser) {
|
||
|
|
$progress->progress();
|
||
|
|
$user = (object)backup_controller_dbops::decode_backup_temp_info($recuser->info);
|
||
|
|
|
||
|
|
// if user lang doesn't exist here, use site default
|
||
|
|
if (!array_key_exists($user->lang, $languages)) {
|
||
|
|
$user->lang = $CFG->lang;
|
||
|
|
}
|
||
|
|
|
||
|
|
// if user theme isn't available on target site or they are disabled, reset theme
|
||
|
|
if (!empty($user->theme)) {
|
||
|
|
if (empty($CFG->allowuserthemes) || !in_array($user->theme, $themes)) {
|
||
|
|
$user->theme = '';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// if user to be created has mnet auth and its mnethostid is $CFG->mnet_localhost_id
|
||
|
|
// that's 100% impossible as own server cannot be accesed over mnet. Change auth to email/manual
|
||
|
|
if ($user->auth == 'mnet' && $user->mnethostid == $CFG->mnet_localhost_id) {
|
||
|
|
// Respect registerauth
|
||
|
|
if ($CFG->registerauth == 'email') {
|
||
|
|
$user->auth = 'email';
|
||
|
|
} else {
|
||
|
|
$user->auth = 'manual';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
unset($user->mnethosturl); // Not needed anymore
|
||
|
|
|
||
|
|
// Disable pictures based on global setting
|
||
|
|
if (!empty($CFG->disableuserimages)) {
|
||
|
|
$user->picture = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// We need to analyse the AUTH field to recode it:
|
||
|
|
// - if the auth isn't enabled in target site, $CFG->registerauth will decide
|
||
|
|
// - finally, if the auth resulting isn't enabled, default to 'manual'
|
||
|
|
if (!is_enabled_auth($user->auth)) {
|
||
|
|
if ($CFG->registerauth == 'email') {
|
||
|
|
$user->auth = 'email';
|
||
|
|
} else {
|
||
|
|
$user->auth = 'manual';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!is_enabled_auth($user->auth)) { // Final auth check verify, default to manual if not enabled
|
||
|
|
$user->auth = 'manual';
|
||
|
|
}
|
||
|
|
|
||
|
|
// Now that we know the auth method, for users to be created without pass
|
||
|
|
// if password handling is internal and reset password is available
|
||
|
|
// we set the password to "restored" (plain text), so the login process
|
||
|
|
// will know how to handle that situation in order to allow the user to
|
||
|
|
// recover the password. MDL-20846
|
||
|
|
if (empty($user->password)) { // Only if restore comes without password
|
||
|
|
if (!array_key_exists($user->auth, $authcache)) { // Not in cache
|
||
|
|
$userauth = new stdClass();
|
||
|
|
$authplugin = get_auth_plugin($user->auth);
|
||
|
|
$userauth->preventpassindb = $authplugin->prevent_local_passwords();
|
||
|
|
$userauth->isinternal = $authplugin->is_internal();
|
||
|
|
$userauth->canresetpwd = $authplugin->can_reset_password();
|
||
|
|
$authcache[$user->auth] = $userauth;
|
||
|
|
} else {
|
||
|
|
$userauth = $authcache[$user->auth]; // Get from cache
|
||
|
|
}
|
||
|
|
|
||
|
|
// Most external plugins do not store passwords locally
|
||
|
|
if (!empty($userauth->preventpassindb)) {
|
||
|
|
$user->password = AUTH_PASSWORD_NOT_CACHED;
|
||
|
|
|
||
|
|
// If Moodle is responsible for storing/validating pwd and reset functionality is available, mark
|
||
|
|
} else if ($userauth->isinternal and $userauth->canresetpwd) {
|
||
|
|
$user->password = 'restored';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Creating new user, we must reset the policyagreed always
|
||
|
|
$user->policyagreed = 0;
|
||
|
|
|
||
|
|
// Set time created if empty
|
||
|
|
if (empty($user->timecreated)) {
|
||
|
|
$user->timecreated = time();
|
||
|
|
}
|
||
|
|
|
||
|
|
// Done, let's create the user and annotate its id
|
||
|
|
$newuserid = $DB->insert_record('user', $user);
|
||
|
|
self::set_backup_ids_record($restoreid, 'user', $recuser->itemid, $newuserid);
|
||
|
|
// Let's create the user context and annotate it (we need it for sure at least for files)
|
||
|
|
// but for deleted users that don't have a context anymore (MDL-30192). We are done for them
|
||
|
|
// and nothing else (custom fields, prefs, tags, files...) will be created.
|
||
|
|
if (empty($user->deleted)) {
|
||
|
|
$newuserctxid = $user->deleted ? 0 : context_user::instance($newuserid)->id;
|
||
|
|
self::set_backup_ids_record($restoreid, 'context', $recuser->parentitemid, $newuserctxid);
|
||
|
|
|
||
|
|
// Process custom fields
|
||
|
|
if (isset($user->custom_fields)) { // if present in backup
|
||
|
|
foreach($user->custom_fields['custom_field'] as $udata) {
|
||
|
|
$udata = (object)$udata;
|
||
|
|
// If the profile field has data and the profile shortname-datatype is defined in server
|
||
|
|
if ($udata->field_data) {
|
||
|
|
if ($field = $DB->get_record('user_info_field', array('shortname'=>$udata->field_name, 'datatype'=>$udata->field_type))) {
|
||
|
|
/// Insert the user_custom_profile_field
|
||
|
|
$rec = new stdClass();
|
||
|
|
$rec->userid = $newuserid;
|
||
|
|
$rec->fieldid = $field->id;
|
||
|
|
$rec->data = $udata->field_data;
|
||
|
|
$DB->insert_record('user_info_data', $rec);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Process tags
|
||
|
|
if (core_tag_tag::is_enabled('core', 'user') && isset($user->tags)) { // If enabled in server and present in backup.
|
||
|
|
$tags = array();
|
||
|
|
foreach($user->tags['tag'] as $usertag) {
|
||
|
|
$usertag = (object)$usertag;
|
||
|
|
$tags[] = $usertag->rawname;
|
||
|
|
}
|
||
|
|
core_tag_tag::set_item_tags('core', 'user', $newuserid,
|
||
|
|
context_user::instance($newuserid), $tags);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Process preferences
|
||
|
|
if (isset($user->preferences)) { // if present in backup
|
||
|
|
foreach($user->preferences['preference'] as $preference) {
|
||
|
|
$preference = (object)$preference;
|
||
|
|
// Prepare the record and insert it
|
||
|
|
$preference->userid = $newuserid;
|
||
|
|
$status = $DB->insert_record('user_preferences', $preference);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// Special handling for htmleditor which was converted to a preference.
|
||
|
|
if (isset($user->htmleditor)) {
|
||
|
|
if ($user->htmleditor == 0) {
|
||
|
|
$preference = new stdClass();
|
||
|
|
$preference->userid = $newuserid;
|
||
|
|
$preference->name = 'htmleditor';
|
||
|
|
$preference->value = 'textarea';
|
||
|
|
$status = $DB->insert_record('user_preferences', $preference);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Create user files in pool (profile, icon, private) by context
|
||
|
|
restore_dbops::send_files_to_pool($basepath, $restoreid, 'user', 'icon',
|
||
|
|
$recuser->parentitemid, $userid, null, null, null, false, $progress);
|
||
|
|
restore_dbops::send_files_to_pool($basepath, $restoreid, 'user', 'profile',
|
||
|
|
$recuser->parentitemid, $userid, null, null, null, false, $progress);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$rs->close();
|
||
|
|
$progress->end_progress();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Given one user object (from backup file), perform all the neccesary
|
||
|
|
* checks is order to decide how that user will be handled on restore.
|
||
|
|
*
|
||
|
|
* Note the function requires $user->mnethostid to be already calculated
|
||
|
|
* so it's caller responsibility to set it
|
||
|
|
*
|
||
|
|
* This function is used both by @restore_precheck_users() and
|
||
|
|
* @restore_create_users() to get consistent results in both places
|
||
|
|
*
|
||
|
|
* It returns:
|
||
|
|
* - one user object (from DB), if match has been found and user will be remapped
|
||
|
|
* - boolean true if the user needs to be created
|
||
|
|
* - boolean false if some conflict happened and the user cannot be handled
|
||
|
|
*
|
||
|
|
* Each test is responsible for returning its results and interrupt
|
||
|
|
* execution. At the end, boolean true (user needs to be created) will be
|
||
|
|
* returned if no test has interrupted that.
|
||
|
|
*
|
||
|
|
* Here it's the logic applied, keep it updated:
|
||
|
|
*
|
||
|
|
* If restoring users from same site backup:
|
||
|
|
* 1A - Normal check: If match by id and username and mnethost => ok, return target user
|
||
|
|
* 1B - If restoring an 'anonymous' user (created via the 'Anonymize user information' option) try to find a
|
||
|
|
* match by username only => ok, return target user MDL-31484
|
||
|
|
* 1C - Handle users deleted in DB and "alive" in backup file:
|
||
|
|
* If match by id and mnethost and user is deleted in DB and
|
||
|
|
* (match by username LIKE 'backup_email.%' or by non empty email = md5(username)) => ok, return target user
|
||
|
|
* 1D - Handle users deleted in backup file and "alive" in DB:
|
||
|
|
* If match by id and mnethost and user is deleted in backup file
|
||
|
|
* and match by email = email_without_time(backup_email) => ok, return target user
|
||
|
|
* 1E - Conflict: If match by username and mnethost and doesn't match by id => conflict, return false
|
||
|
|
* 1F - None of the above, return true => User needs to be created
|
||
|
|
*
|
||
|
|
* if restoring from another site backup (cannot match by id here, replace it by email/firstaccess combination):
|
||
|
|
* 2A - Normal check:
|
||
|
|
* 2A1 - If match by username and mnethost and (email or non-zero firstaccess) => ok, return target user
|
||
|
|
* 2A2 - Exceptional handling (MDL-21912): Match "admin" username. Then, if import_general_duplicate_admin_allowed is
|
||
|
|
* enabled, attempt to map the admin user to the user 'admin_[oldsiteid]' if it exists. If not,
|
||
|
|
* the user 'admin_[oldsiteid]' will be created in precheck_included users
|
||
|
|
* 2B - Handle users deleted in DB and "alive" in backup file:
|
||
|
|
* 2B1 - If match by mnethost and user is deleted in DB and not empty email = md5(username) and
|
||
|
|
* (username LIKE 'backup_email.%' or non-zero firstaccess) => ok, return target user
|
||
|
|
* 2B2 - If match by mnethost and user is deleted in DB and
|
||
|
|
* username LIKE 'backup_email.%' and non-zero firstaccess) => ok, return target user
|
||
|
|
* (to cover situations were md5(username) wasn't implemented on delete we requiere both)
|
||
|
|
* 2C - Handle users deleted in backup file and "alive" in DB:
|
||
|
|
* If match mnethost and user is deleted in backup file
|
||
|
|
* and by email = email_without_time(backup_email) and non-zero firstaccess=> ok, return target user
|
||
|
|
* 2D - Conflict: If match by username and mnethost and not by (email or non-zero firstaccess) => conflict, return false
|
||
|
|
* 2E - None of the above, return true => User needs to be created
|
||
|
|
*
|
||
|
|
* Note: for DB deleted users email is stored in username field, hence we
|
||
|
|
* are looking there for emails. See delete_user()
|
||
|
|
* Note: for DB deleted users md5(username) is stored *sometimes* in the email field,
|
||
|
|
* hence we are looking there for usernames if not empty. See delete_user()
|
||
|
|
*/
|
||
|
|
protected static function precheck_user($user, $samesite, $siteid = null) {
|
||
|
|
global $CFG, $DB;
|
||
|
|
|
||
|
|
// Handle checks from same site backups
|
||
|
|
if ($samesite && empty($CFG->forcedifferentsitecheckingusersonrestore)) {
|
||
|
|
|
||
|
|
// 1A - If match by id and username and mnethost => ok, return target user
|
||
|
|
if ($rec = $DB->get_record('user', array('id'=>$user->id, 'username'=>$user->username, 'mnethostid'=>$user->mnethostid))) {
|
||
|
|
return $rec; // Matching user found, return it
|
||
|
|
}
|
||
|
|
|
||
|
|
// 1B - If restoring an 'anonymous' user (created via the 'Anonymize user information' option) try to find a
|
||
|
|
// match by username only => ok, return target user MDL-31484
|
||
|
|
// This avoids username / id mis-match problems when restoring subsequent anonymized backups.
|
||
|
|
if (backup_anonymizer_helper::is_anonymous_user($user)) {
|
||
|
|
if ($rec = $DB->get_record('user', array('username' => $user->username))) {
|
||
|
|
return $rec; // Matching anonymous user found - return it
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// 1C - Handle users deleted in DB and "alive" in backup file
|
||
|
|
// Note: for DB deleted users email is stored in username field, hence we
|
||
|
|
// are looking there for emails. See delete_user()
|
||
|
|
// Note: for DB deleted users md5(username) is stored *sometimes* in the email field,
|
||
|
|
// hence we are looking there for usernames if not empty. See delete_user()
|
||
|
|
// If match by id and mnethost and user is deleted in DB and
|
||
|
|
// match by username LIKE 'backup_email.%' or by non empty email = md5(username) => ok, return target user
|
||
|
|
if ($rec = $DB->get_record_sql("SELECT *
|
||
|
|
FROM {user} u
|
||
|
|
WHERE id = ?
|
||
|
|
AND mnethostid = ?
|
||
|
|
AND deleted = 1
|
||
|
|
AND (
|
||
|
|
UPPER(username) LIKE UPPER(?)
|
||
|
|
OR (
|
||
|
|
".$DB->sql_isnotempty('user', 'email', false, false)."
|
||
|
|
AND email = ?
|
||
|
|
)
|
||
|
|
)",
|
||
|
|
array($user->id, $user->mnethostid, $user->email.'.%', md5($user->username)))) {
|
||
|
|
return $rec; // Matching user, deleted in DB found, return it
|
||
|
|
}
|
||
|
|
|
||
|
|
// 1D - Handle users deleted in backup file and "alive" in DB
|
||
|
|
// If match by id and mnethost and user is deleted in backup file
|
||
|
|
// and match by email = email_without_time(backup_email) => ok, return target user
|
||
|
|
if ($user->deleted) {
|
||
|
|
// Note: for DB deleted users email is stored in username field, hence we
|
||
|
|
// are looking there for emails. See delete_user()
|
||
|
|
// Trim time() from email
|
||
|
|
$trimemail = preg_replace('/(.*?)\.[0-9]+.?$/', '\\1', $user->username);
|
||
|
|
if ($rec = $DB->get_record_sql("SELECT *
|
||
|
|
FROM {user} u
|
||
|
|
WHERE id = ?
|
||
|
|
AND mnethostid = ?
|
||
|
|
AND UPPER(email) = UPPER(?)",
|
||
|
|
array($user->id, $user->mnethostid, $trimemail))) {
|
||
|
|
return $rec; // Matching user, deleted in backup file found, return it
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// 1E - If match by username and mnethost and doesn't match by id => conflict, return false
|
||
|
|
if ($rec = $DB->get_record('user', array('username'=>$user->username, 'mnethostid'=>$user->mnethostid))) {
|
||
|
|
if ($user->id != $rec->id) {
|
||
|
|
return false; // Conflict, username already exists and belongs to another id
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Handle checks from different site backups
|
||
|
|
} else {
|
||
|
|
|
||
|
|
// 2A1 - If match by username and mnethost and
|
||
|
|
// (email or non-zero firstaccess) => ok, return target user
|
||
|
|
if ($rec = $DB->get_record_sql("SELECT *
|
||
|
|
FROM {user} u
|
||
|
|
WHERE username = ?
|
||
|
|
AND mnethostid = ?
|
||
|
|
AND (
|
||
|
|
UPPER(email) = UPPER(?)
|
||
|
|
OR (
|
||
|
|
firstaccess != 0
|
||
|
|
AND firstaccess = ?
|
||
|
|
)
|
||
|
|
)",
|
||
|
|
array($user->username, $user->mnethostid, $user->email, $user->firstaccess))) {
|
||
|
|
return $rec; // Matching user found, return it
|
||
|
|
}
|
||
|
|
|
||
|
|
// 2A2 - If we're allowing conflicting admins, attempt to map user to admin_[oldsiteid].
|
||
|
|
if (get_config('backup', 'import_general_duplicate_admin_allowed') && $user->username === 'admin' && $siteid
|
||
|
|
&& $user->mnethostid == $CFG->mnet_localhost_id) {
|
||
|
|
if ($rec = $DB->get_record('user', array('username' => 'admin_' . $siteid))) {
|
||
|
|
return $rec;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// 2B - Handle users deleted in DB and "alive" in backup file
|
||
|
|
// Note: for DB deleted users email is stored in username field, hence we
|
||
|
|
// are looking there for emails. See delete_user()
|
||
|
|
// Note: for DB deleted users md5(username) is stored *sometimes* in the email field,
|
||
|
|
// hence we are looking there for usernames if not empty. See delete_user()
|
||
|
|
// 2B1 - If match by mnethost and user is deleted in DB and not empty email = md5(username) and
|
||
|
|
// (by username LIKE 'backup_email.%' or non-zero firstaccess) => ok, return target user
|
||
|
|
if ($rec = $DB->get_record_sql("SELECT *
|
||
|
|
FROM {user} u
|
||
|
|
WHERE mnethostid = ?
|
||
|
|
AND deleted = 1
|
||
|
|
AND ".$DB->sql_isnotempty('user', 'email', false, false)."
|
||
|
|
AND email = ?
|
||
|
|
AND (
|
||
|
|
UPPER(username) LIKE UPPER(?)
|
||
|
|
OR (
|
||
|
|
firstaccess != 0
|
||
|
|
AND firstaccess = ?
|
||
|
|
)
|
||
|
|
)",
|
||
|
|
array($user->mnethostid, md5($user->username), $user->email.'.%', $user->firstaccess))) {
|
||
|
|
return $rec; // Matching user found, return it
|
||
|
|
}
|
||
|
|
|
||
|
|
// 2B2 - If match by mnethost and user is deleted in DB and
|
||
|
|
// username LIKE 'backup_email.%' and non-zero firstaccess) => ok, return target user
|
||
|
|
// (this covers situations where md5(username) wasn't being stored so we require both
|
||
|
|
// the email & non-zero firstaccess to match)
|
||
|
|
if ($rec = $DB->get_record_sql("SELECT *
|
||
|
|
FROM {user} u
|
||
|
|
WHERE mnethostid = ?
|
||
|
|
AND deleted = 1
|
||
|
|
AND UPPER(username) LIKE UPPER(?)
|
||
|
|
AND firstaccess != 0
|
||
|
|
AND firstaccess = ?",
|
||
|
|
array($user->mnethostid, $user->email.'.%', $user->firstaccess))) {
|
||
|
|
return $rec; // Matching user found, return it
|
||
|
|
}
|
||
|
|
|
||
|
|
// 2C - Handle users deleted in backup file and "alive" in DB
|
||
|
|
// If match mnethost and user is deleted in backup file
|
||
|
|
// and match by email = email_without_time(backup_email) and non-zero firstaccess=> ok, return target user
|
||
|
|
if ($user->deleted) {
|
||
|
|
// Note: for DB deleted users email is stored in username field, hence we
|
||
|
|
// are looking there for emails. See delete_user()
|
||
|
|
// Trim time() from email
|
||
|
|
$trimemail = preg_replace('/(.*?)\.[0-9]+.?$/', '\\1', $user->username);
|
||
|
|
if ($rec = $DB->get_record_sql("SELECT *
|
||
|
|
FROM {user} u
|
||
|
|
WHERE mnethostid = ?
|
||
|
|
AND UPPER(email) = UPPER(?)
|
||
|
|
AND firstaccess != 0
|
||
|
|
AND firstaccess = ?",
|
||
|
|
array($user->mnethostid, $trimemail, $user->firstaccess))) {
|
||
|
|
return $rec; // Matching user, deleted in backup file found, return it
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// 2D - If match by username and mnethost and not by (email or non-zero firstaccess) => conflict, return false
|
||
|
|
if ($rec = $DB->get_record_sql("SELECT *
|
||
|
|
FROM {user} u
|
||
|
|
WHERE username = ?
|
||
|
|
AND mnethostid = ?
|
||
|
|
AND NOT (
|
||
|
|
UPPER(email) = UPPER(?)
|
||
|
|
OR (
|
||
|
|
firstaccess != 0
|
||
|
|
AND firstaccess = ?
|
||
|
|
)
|
||
|
|
)",
|
||
|
|
array($user->username, $user->mnethostid, $user->email, $user->firstaccess))) {
|
||
|
|
return false; // Conflict, username/mnethostid already exist and belong to another user (by email/firstaccess)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Arrived here, return true as the user will need to be created and no
|
||
|
|
// conflicts have been found in the logic above. This covers:
|
||
|
|
// 1E - else => user needs to be created, return true
|
||
|
|
// 2E - else => user needs to be created, return true
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check all the included users, deciding the action to perform
|
||
|
|
* for each one (mapping / creation) and returning one array
|
||
|
|
* of problems in case something is wrong (lack of permissions,
|
||
|
|
* conficts)
|
||
|
|
*
|
||
|
|
* @param string $restoreid Restore id
|
||
|
|
* @param int $courseid Course id
|
||
|
|
* @param int $userid User id
|
||
|
|
* @param bool $samesite True if restore is to same site
|
||
|
|
* @param \core\progress\base $progress Progress reporter
|
||
|
|
*/
|
||
|
|
public static function precheck_included_users($restoreid, $courseid, $userid, $samesite,
|
||
|
|
\core\progress\base $progress) {
|
||
|
|
global $CFG, $DB;
|
||
|
|
|
||
|
|
// To return any problem found
|
||
|
|
$problems = array();
|
||
|
|
|
||
|
|
// We are going to map mnethostid, so load all the available ones
|
||
|
|
$mnethosts = $DB->get_records('mnet_host', array(), 'wwwroot', 'wwwroot, id');
|
||
|
|
|
||
|
|
// Calculate the context we are going to use for capability checking
|
||
|
|
$context = context_course::instance($courseid);
|
||
|
|
|
||
|
|
// TODO: Some day we must kill this dependency and change the process
|
||
|
|
// to pass info around without loading a controller copy.
|
||
|
|
// When conflicting users are detected we may need original site info.
|
||
|
|
$rc = restore_controller_dbops::load_controller($restoreid);
|
||
|
|
$restoreinfo = $rc->get_info();
|
||
|
|
$rc->destroy(); // Always need to destroy.
|
||
|
|
|
||
|
|
// Calculate if we have perms to create users, by checking:
|
||
|
|
// to 'moodle/restore:createuser' and 'moodle/restore:userinfo'
|
||
|
|
// and also observe $CFG->disableusercreationonrestore
|
||
|
|
$cancreateuser = false;
|
||
|
|
if (has_capability('moodle/restore:createuser', $context, $userid) and
|
||
|
|
has_capability('moodle/restore:userinfo', $context, $userid) and
|
||
|
|
empty($CFG->disableusercreationonrestore)) { // Can create users
|
||
|
|
|
||
|
|
$cancreateuser = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Prepare for reporting progress.
|
||
|
|
$conditions = array('backupid' => $restoreid, 'itemname' => 'user');
|
||
|
|
$max = $DB->count_records('backup_ids_temp', $conditions);
|
||
|
|
$done = 0;
|
||
|
|
$progress->start_progress('Checking users', $max);
|
||
|
|
|
||
|
|
// Iterate over all the included users
|
||
|
|
$rs = $DB->get_recordset('backup_ids_temp', $conditions, '', 'itemid, info');
|
||
|
|
foreach ($rs as $recuser) {
|
||
|
|
$user = (object)backup_controller_dbops::decode_backup_temp_info($recuser->info);
|
||
|
|
|
||
|
|
// Find the correct mnethostid for user before performing any further check
|
||
|
|
if (empty($user->mnethosturl) || $user->mnethosturl === $CFG->wwwroot) {
|
||
|
|
$user->mnethostid = $CFG->mnet_localhost_id;
|
||
|
|
} else {
|
||
|
|
// fast url-to-id lookups
|
||
|
|
if (isset($mnethosts[$user->mnethosturl])) {
|
||
|
|
$user->mnethostid = $mnethosts[$user->mnethosturl]->id;
|
||
|
|
} else {
|
||
|
|
$user->mnethostid = $CFG->mnet_localhost_id;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Now, precheck that user and, based on returned results, annotate action/problem
|
||
|
|
$usercheck = self::precheck_user($user, $samesite, $restoreinfo->original_site_identifier_hash);
|
||
|
|
|
||
|
|
if (is_object($usercheck)) { // No problem, we have found one user in DB to be mapped to
|
||
|
|
// Annotate it, for later process. Set newitemid to mapping user->id
|
||
|
|
self::set_backup_ids_record($restoreid, 'user', $recuser->itemid, $usercheck->id);
|
||
|
|
|
||
|
|
} else if ($usercheck === false) { // Found conflict, report it as problem
|
||
|
|
if (!get_config('backup', 'import_general_duplicate_admin_allowed')) {
|
||
|
|
$problems[] = get_string('restoreuserconflict', '', $user->username);
|
||
|
|
} else if ($user->username == 'admin') {
|
||
|
|
if (!$cancreateuser) {
|
||
|
|
$problems[] = get_string('restorecannotcreateuser', '', $user->username);
|
||
|
|
}
|
||
|
|
if ($user->mnethostid != $CFG->mnet_localhost_id) {
|
||
|
|
$problems[] = get_string('restoremnethostidmismatch', '', $user->username);
|
||
|
|
}
|
||
|
|
if (!$problems) {
|
||
|
|
// Duplicate admin allowed, append original site idenfitier to username.
|
||
|
|
$user->username .= '_' . $restoreinfo->original_site_identifier_hash;
|
||
|
|
self::set_backup_ids_record($restoreid, 'user', $recuser->itemid, 0, null, (array)$user);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
} else if ($usercheck === true) { // User needs to be created, check if we are able
|
||
|
|
if ($cancreateuser) { // Can create user, set newitemid to 0 so will be created later
|
||
|
|
self::set_backup_ids_record($restoreid, 'user', $recuser->itemid, 0, null, (array)$user);
|
||
|
|
|
||
|
|
} else { // Cannot create user, report it as problem
|
||
|
|
$problems[] = get_string('restorecannotcreateuser', '', $user->username);
|
||
|
|
}
|
||
|
|
|
||
|
|
} else { // Shouldn't arrive here ever, something is for sure wrong. Exception
|
||
|
|
throw new restore_dbops_exception('restore_error_processing_user', $user->username);
|
||
|
|
}
|
||
|
|
$done++;
|
||
|
|
$progress->progress($done);
|
||
|
|
}
|
||
|
|
$rs->close();
|
||
|
|
$progress->end_progress();
|
||
|
|
return $problems;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Process the needed users in order to decide
|
||
|
|
* which action to perform with them (create/map)
|
||
|
|
*
|
||
|
|
* Just wrap over precheck_included_users(), returning
|
||
|
|
* exception if any problem is found
|
||
|
|
*
|
||
|
|
* @param string $restoreid Restore id
|
||
|
|
* @param int $courseid Course id
|
||
|
|
* @param int $userid User id
|
||
|
|
* @param bool $samesite True if restore is to same site
|
||
|
|
* @param \core\progress\base $progress Optional progress tracker
|
||
|
|
*/
|
||
|
|
public static function process_included_users($restoreid, $courseid, $userid, $samesite,
|
||
|
|
\core\progress\base $progress = null) {
|
||
|
|
global $DB;
|
||
|
|
|
||
|
|
// Just let precheck_included_users() to do all the hard work
|
||
|
|
$problems = self::precheck_included_users($restoreid, $courseid, $userid, $samesite, $progress);
|
||
|
|
|
||
|
|
// With problems, throw exception, shouldn't happen if prechecks were originally
|
||
|
|
// executed, so be radical here.
|
||
|
|
if (!empty($problems)) {
|
||
|
|
throw new restore_dbops_exception('restore_problems_processing_users', null, implode(', ', $problems));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Process the needed question categories and questions
|
||
|
|
* to check all them, deciding about the action to perform
|
||
|
|
* (create/map) and target.
|
||
|
|
*
|
||
|
|
* Just wrap over precheck_categories_and_questions(), returning
|
||
|
|
* exception if any problem is found
|
||
|
|
*/
|
||
|
|
public static function process_categories_and_questions($restoreid, $courseid, $userid, $samesite) {
|
||
|
|
global $DB;
|
||
|
|
|
||
|
|
// Just let precheck_included_users() to do all the hard work
|
||
|
|
$problems = self::precheck_categories_and_questions($restoreid, $courseid, $userid, $samesite);
|
||
|
|
|
||
|
|
// With problems of type error, throw exception, shouldn't happen if prechecks were originally
|
||
|
|
// executed, so be radical here.
|
||
|
|
if (array_key_exists('errors', $problems)) {
|
||
|
|
throw new restore_dbops_exception('restore_problems_processing_questions', null, implode(', ', $problems['errors']));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public static function set_backup_files_record($restoreid, $filerec) {
|
||
|
|
global $DB;
|
||
|
|
|
||
|
|
// Store external files info in `info` field
|
||
|
|
$filerec->info = backup_controller_dbops::encode_backup_temp_info($filerec); // Encode the whole record into info.
|
||
|
|
$filerec->backupid = $restoreid;
|
||
|
|
$DB->insert_record('backup_files_temp', $filerec);
|
||
|
|
}
|
||
|
|
|
||
|
|
public static function set_backup_ids_record($restoreid, $itemname, $itemid, $newitemid = 0, $parentitemid = null, $info = null) {
|
||
|
|
// Build conditionally the extra record info
|
||
|
|
$extrarecord = array();
|
||
|
|
if ($newitemid != 0) {
|
||
|
|
$extrarecord['newitemid'] = $newitemid;
|
||
|
|
}
|
||
|
|
if ($parentitemid != null) {
|
||
|
|
$extrarecord['parentitemid'] = $parentitemid;
|
||
|
|
}
|
||
|
|
if ($info != null) {
|
||
|
|
$extrarecord['info'] = backup_controller_dbops::encode_backup_temp_info($info);
|
||
|
|
}
|
||
|
|
|
||
|
|
self::set_backup_ids_cached($restoreid, $itemname, $itemid, $extrarecord);
|
||
|
|
}
|
||
|
|
|
||
|
|
public static function get_backup_ids_record($restoreid, $itemname, $itemid) {
|
||
|
|
$dbrec = self::get_backup_ids_cached($restoreid, $itemname, $itemid);
|
||
|
|
|
||
|
|
// We must test if info is a string, as the cache stores info in object form.
|
||
|
|
if ($dbrec && isset($dbrec->info) && is_string($dbrec->info)) {
|
||
|
|
$dbrec->info = backup_controller_dbops::decode_backup_temp_info($dbrec->info);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $dbrec;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Given on courseid, fullname and shortname, calculate the correct fullname/shortname to avoid dupes
|
||
|
|
*/
|
||
|
|
public static function calculate_course_names($courseid, $fullname, $shortname) {
|
||
|
|
global $CFG, $DB;
|
||
|
|
|
||
|
|
$currentfullname = '';
|
||
|
|
$currentshortname = '';
|
||
|
|
$counter = 0;
|
||
|
|
// Iteratere while the name exists
|
||
|
|
do {
|
||
|
|
if ($counter) {
|
||
|
|
$suffixfull = ' ' . get_string('copyasnoun') . ' ' . $counter;
|
||
|
|
$suffixshort = '_' . $counter;
|
||
|
|
} else {
|
||
|
|
$suffixfull = '';
|
||
|
|
$suffixshort = '';
|
||
|
|
}
|
||
|
|
$currentfullname = $fullname.$suffixfull;
|
||
|
|
$currentshortname = substr($shortname, 0, 100 - strlen($suffixshort)).$suffixshort; // < 100cc
|
||
|
|
$coursefull = $DB->get_record_select('course', 'fullname = ? AND id != ?',
|
||
|
|
array($currentfullname, $courseid), '*', IGNORE_MULTIPLE);
|
||
|
|
$courseshort = $DB->get_record_select('course', 'shortname = ? AND id != ?', array($currentshortname, $courseid));
|
||
|
|
$counter++;
|
||
|
|
} while ($coursefull || $courseshort);
|
||
|
|
|
||
|
|
// Return results
|
||
|
|
return array($currentfullname, $currentshortname);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* For the target course context, put as many custom role names as possible
|
||
|
|
*/
|
||
|
|
public static function set_course_role_names($restoreid, $courseid) {
|
||
|
|
global $DB;
|
||
|
|
|
||
|
|
// Get the course context
|
||
|
|
$coursectx = context_course::instance($courseid);
|
||
|
|
// Get all the mapped roles we have
|
||
|
|
$rs = $DB->get_recordset('backup_ids_temp', array('backupid' => $restoreid, 'itemname' => 'role'), '', 'itemid, info, newitemid');
|
||
|
|
foreach ($rs as $recrole) {
|
||
|
|
$info = backup_controller_dbops::decode_backup_temp_info($recrole->info);
|
||
|
|
// If it's one mapped role and we have one name for it
|
||
|
|
if (!empty($recrole->newitemid) && !empty($info['nameincourse'])) {
|
||
|
|
// If role name doesn't exist, add it
|
||
|
|
$rolename = new stdclass();
|
||
|
|
$rolename->roleid = $recrole->newitemid;
|
||
|
|
$rolename->contextid = $coursectx->id;
|
||
|
|
if (!$DB->record_exists('role_names', (array)$rolename)) {
|
||
|
|
$rolename->name = $info['nameincourse'];
|
||
|
|
$DB->insert_record('role_names', $rolename);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$rs->close();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a skeleton record within the database using the passed parameters
|
||
|
|
* and returns the new course id.
|
||
|
|
*
|
||
|
|
* @global moodle_database $DB
|
||
|
|
* @param string $fullname
|
||
|
|
* @param string $shortname
|
||
|
|
* @param int $categoryid
|
||
|
|
* @return int The new course id
|
||
|
|
*/
|
||
|
|
public static function create_new_course($fullname, $shortname, $categoryid) {
|
||
|
|
global $DB;
|
||
|
|
$category = $DB->get_record('course_categories', array('id'=>$categoryid), '*', MUST_EXIST);
|
||
|
|
|
||
|
|
$course = new stdClass;
|
||
|
|
$course->fullname = $fullname;
|
||
|
|
$course->shortname = $shortname;
|
||
|
|
$course->category = $category->id;
|
||
|
|
$course->sortorder = 0;
|
||
|
|
$course->timecreated = time();
|
||
|
|
$course->timemodified = $course->timecreated;
|
||
|
|
// forcing skeleton courses to be hidden instead of going by $category->visible , until MDL-27790 is resolved.
|
||
|
|
$course->visible = 0;
|
||
|
|
|
||
|
|
$courseid = $DB->insert_record('course', $course);
|
||
|
|
|
||
|
|
$category->coursecount++;
|
||
|
|
$DB->update_record('course_categories', $category);
|
||
|
|
|
||
|
|
return $courseid;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Deletes all of the content associated with the given course (courseid)
|
||
|
|
* @param int $courseid
|
||
|
|
* @param array $options
|
||
|
|
* @return bool True for success
|
||
|
|
*/
|
||
|
|
public static function delete_course_content($courseid, array $options = null) {
|
||
|
|
return remove_course_contents($courseid, false, $options);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Exception class used by all the @dbops stuff
|
||
|
|
*/
|
||
|
|
class restore_dbops_exception extends backup_exception {
|
||
|
|
|
||
|
|
public function __construct($errorcode, $a=NULL, $debuginfo=null) {
|
||
|
|
parent::__construct($errorcode, 'error', '', $a, null, $debuginfo);
|
||
|
|
}
|
||
|
|
}
|