3 // This file is part of Moodle - http://moodle.org/
5 // Moodle is free software: you can redistribute it and/or modify
6 // it under the terms of the GNU General Public License as published by
7 // the Free Software Foundation, either version 3 of the License, or
8 // (at your option) any later version.
10 // Moodle is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 // GNU General Public License for more details.
15 // You should have received a copy of the GNU General Public License
16 // along with Moodle. If not, see <http://www.gnu.org/licenses/>.
20 * @subpackage backup-moodle2
21 * @copyright 2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
22 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
26 * Define all the backup steps that will be used by common tasks in backup
30 * create the temp dir where backup/restore will happen,
31 * delete old directories and create temp ids table
33 class create_and_clean_temp_stuff extends backup_execution_step {
35 protected function define_execution() {
36 backup_helper::check_and_create_backup_dir($this->get_backupid());// Create backup temp dir
37 backup_helper::clear_backup_dir($this->get_backupid()); // Empty temp dir, just in case
38 backup_helper::delete_old_backup_dirs(time() - (4 * 60 * 60)); // Delete > 4 hours temp dirs
39 backup_controller_dbops::create_backup_ids_temp_table($this->get_backupid()); // Create ids temp table
44 * delete the temp dir used by backup/restore (conditionally),
45 * delete old directories and drop tem ids table. Note we delete
46 * the directory but not the corresponding log file that will be
47 * there for, at least, 4 hours - only delete_old_backup_dirs()
48 * deletes log files (for easier access to them)
50 class drop_and_clean_temp_stuff extends backup_execution_step {
52 protected function define_execution() {
54 backup_controller_dbops::drop_backup_ids_temp_table($this->get_backupid()); // Drop ids temp table
55 backup_helper::delete_old_backup_dirs(time() - (4 * 60 * 60)); // Delete > 4 hours temp dirs
56 if (empty($CFG->keeptempdirectoriesonbackup)) { // Conditionally
57 backup_helper::delete_backup_dir($this->get_backupid()); // Empty backup dir
63 * Create the directory where all the task (activity/block...) information will be stored
65 class create_taskbasepath_directory extends backup_execution_step {
67 protected function define_execution() {
69 $basepath = $this->task->get_taskbasepath();
70 if (!check_dir_exists($basepath, true, true)) {
71 throw new backup_step_exception('cannot_create_taskbasepath_directory', $basepath);
77 * Abstract structure step, parent of all the activity structure steps. Used to wrap the
78 * activity structure definition within the main <activity ...> tag. Also provides
79 * subplugin support for activities (that must be properly declared)
81 abstract class backup_activity_structure_step extends backup_structure_step {
84 * Add subplugin structure to any element in the activity backup tree
86 * @param string $subplugintype type of subplugin as defined in activity db/subplugins.php
87 * @param backup_nested_element $element element in the activity backup tree that
88 * we are going to add subplugin information to
89 * @param bool $multiple to define if multiple subplugins can produce information
90 * for each instance of $element (true) or no (false)
92 protected function add_subplugin_structure($subplugintype, $element, $multiple) {
96 // Check the requested subplugintype is a valid one
97 $subpluginsfile = $CFG->dirroot . '/mod/' . $this->task->get_modulename() . '/db/subplugins.php';
98 if (!file_exists($subpluginsfile)) {
99 throw new backup_step_exception('activity_missing_subplugins_php_file', $this->task->get_modulename());
101 include($subpluginsfile);
102 if (!array_key_exists($subplugintype, $subplugins)) {
103 throw new backup_step_exception('incorrect_subplugin_type', $subplugintype);
106 // Arrived here, subplugin is correct, let's create the optigroup
107 $optigroupname = $subplugintype . '_' . $element->get_name() . '_subplugin';
108 $optigroup = new backup_optigroup($optigroupname, null, $multiple);
109 $element->add_child($optigroup); // Add optigroup to stay connected since beginning
111 // Get all the optigroup_elements, looking across all the subplugin dirs
113 $subpluginsdirs = get_plugin_list($subplugintype);
114 foreach ($subpluginsdirs as $name => $subpluginsdir) {
115 $classname = 'backup_' . $subplugintype . '_' . $name . '_subplugin';
116 $backupfile = $subpluginsdir . '/backup/moodle2/' . $classname . '.class.php';
117 if (file_exists($backupfile)) {
118 require_once($backupfile);
119 $backupsubplugin = new $classname($subplugintype, $name, $optigroup);
120 // Add subplugin returned structure to optigroup
121 $backupsubplugin->define_subplugin_structure($element->get_name());
127 * Wraps any activity backup structure within the common 'activity' element
128 * that will include common to all activities information like id, context...
130 protected function prepare_activity_structure($activitystructure) {
132 // Create the wrap element
133 $activity = new backup_nested_element('activity', array('id', 'moduleid', 'modulename', 'contextid'), null);
136 $activity->add_child($activitystructure);
139 $activityarr = array((object)array(
140 'id' => $this->task->get_activityid(),
141 'moduleid' => $this->task->get_moduleid(),
142 'modulename' => $this->task->get_modulename(),
143 'contextid' => $this->task->get_contextid()));
145 $activity->set_source_array($activityarr);
147 // Return the root element (activity)
153 * Abstract structure step, parent of all the block structure steps. Used to wrap the
154 * block structure definition within the main <block ...> tag
156 abstract class backup_block_structure_step extends backup_structure_step {
158 protected function prepare_block_structure($blockstructure) {
160 // Create the wrap element
161 $block = new backup_nested_element('block', array('id', 'blockname', 'contextid'), null);
164 $block->add_child($blockstructure);
167 $blockarr = array((object)array(
168 'id' => $this->task->get_blockid(),
169 'blockname' => $this->task->get_blockname(),
170 'contextid' => $this->task->get_contextid()));
172 $block->set_source_array($blockarr);
174 // Return the root element (block)
180 * structure step that will generate the module.xml file for the activity,
181 * accumulating various information about the activity, annotating groupings
182 * and completion/avail conf
184 class backup_module_structure_step extends backup_structure_step {
186 protected function define_structure() {
188 // Define each element separated
190 $module = new backup_nested_element('module', array('id', 'version'), array(
191 'modulename', 'sectionid', 'sectionnumber', 'idnumber',
192 'added', 'score', 'indent', 'visible',
193 'visibleold', 'groupmode', 'groupingid', 'groupmembersonly',
194 'completion', 'completiongradeitemnumber', 'completionview', 'completionexpected',
195 'availablefrom', 'availableuntil', 'showavailability'));
197 $availinfo = new backup_nested_element('availability_info');
198 $availability = new backup_nested_element('availability', array('id'), array(
199 'sourcecmid', 'requiredcompletion', 'gradeitemid', 'grademin', 'grademax'));
202 $module->add_child($availinfo);
203 $availinfo->add_child($availability);
207 $module->set_source_sql('
208 SELECT cm.*, m.version, m.name AS modulename, s.id AS sectionid, s.section AS sectionnumber
209 FROM {course_modules} cm
210 JOIN {modules} m ON m.id = cm.module
211 JOIN {course_sections} s ON s.id = cm.section
212 WHERE cm.id = ?', array(backup::VAR_MODID));
214 $availability->set_source_table('course_modules_availability', array('coursemoduleid' => backup::VAR_MODID));
216 // Define annotations
217 $module->annotate_ids('grouping', 'groupingid');
219 // Return the root element ($module)
225 * structure step that will generate the section.xml file for the section
228 class backup_section_structure_step extends backup_structure_step {
230 protected function define_structure() {
232 // Define each element separated
234 $section = new backup_nested_element('section', array('id'), array(
235 'number', 'name', 'summary', 'summaryformat', 'sequence', 'visible'));
239 $section->set_source_table('course_sections', array('id' => backup::VAR_SECTIONID));
242 $section->set_source_alias('section', 'number');
245 $section->annotate_files('course', 'section', 'id');
252 * structure step that will generate the course.xml file for the course, including
253 * course category reference, tags, modules restriction information
254 * and some annotations (files & groupings)
256 class backup_course_structure_step extends backup_structure_step {
258 protected function define_structure() {
261 // Define each element separated
263 $course = new backup_nested_element('course', array('id', 'contextid'), array(
264 'shortname', 'fullname', 'idnumber',
265 'summary', 'summaryformat', 'format', 'showgrades',
266 'newsitems', 'startdate',
267 'numsections', 'marker', 'maxbytes', 'showreports',
268 'visible', 'hiddensections', 'groupmode', 'groupmodeforce',
269 'defaultgroupingid', 'lang', 'theme',
270 'timecreated', 'timemodified',
271 'requested', 'restrictmodules',
272 'enablecompletion'));
274 $category = new backup_nested_element('category', array('id'), array(
275 'name', 'description'));
277 $tags = new backup_nested_element('tags');
279 $tag = new backup_nested_element('tag', array('id'), array(
282 $allowedmodules = new backup_nested_element('allowed_modules');
284 $module = new backup_nested_element('module', array('modulename'));
288 $course->add_child($category);
290 $course->add_child($tags);
291 $tags->add_child($tag);
293 $course->add_child($allowedmodules);
294 $allowedmodules->add_child($module);
298 $courserec = $DB->get_record('course', array('id' => $this->task->get_courseid()));
299 $courserec->contextid = $this->task->get_contextid();
301 $course->set_source_array(array($courserec));
303 $categoryrec = $DB->get_record('course_categories', array('id' => $courserec->category));
305 $category->set_source_array(array($categoryrec));
307 $tag->set_source_sql('SELECT t.id, t.name, t.rawname
309 JOIN {tag_instance} ti ON ti.tagid = t.id
310 WHERE ti.itemtype = ?
311 AND ti.itemid = ?', array(
312 backup_helper::is_sqlparam('course'),
313 backup::VAR_PARENTID));
315 $module->set_source_sql('SELECT m.name AS modulename
317 JOIN {course_allowed_modules} cam ON m.id = cam.module
318 WHERE course = ?', array(backup::VAR_COURSEID));
322 $course->annotate_ids('grouping', 'defaultgroupingid');
324 $course->annotate_files('course', 'summary', null);
325 $course->annotate_files('course', 'legacy', null);
327 // Return root element ($course)
334 * structure step that will generate the enrolments.xml file for the given course
336 class backup_enrolments_structure_step extends backup_structure_step {
338 protected function define_structure() {
340 // To know if we are including users
341 $users = $this->get_setting_value('users');
343 // Define each element separated
345 $enrolments = new backup_nested_element('enrolments');
347 $enrols = new backup_nested_element('enrols');
349 $enrol = new backup_nested_element('enrol', array('id'), array(
350 'enrol', 'status', 'sortorder', 'name', 'enrolperiod', 'enrolstartdate',
351 'enrolenddate', 'expirynotify', 'expirytreshold', 'notifyall',
352 'password', 'cost', 'currency', 'roleid', 'customint1', 'customint2', 'customint3',
353 'customint4', 'customchar1', 'customchar2', 'customdec1', 'customdec2',
354 'customtext1', 'customtext2', 'timecreated', 'timemodified'));
356 $userenrolments = new backup_nested_element('user_enrolments');
358 $enrolment = new backup_nested_element('enrolment', array('id'), array(
359 'status', 'userid', 'timestart', 'timeend', 'modifierid',
363 $enrolments->add_child($enrols);
364 $enrols->add_child($enrol);
365 $enrol->add_child($userenrolments);
366 $userenrolments->add_child($enrolment);
370 $enrol->set_source_table('enrol', array('courseid' => backup::VAR_COURSEID));
372 // User enrolments only added only if users included
374 $enrolment->set_source_table('user_enrolments', array('enrolid' => backup::VAR_PARENTID));
375 $enrolment->annotate_ids('user', 'userid');
378 $enrol->annotate_ids('role', 'roleid');
380 //TODO: let plugins annotate custom fields too and add more children
387 * structure step that will generate the roles.xml file for the given context, observing
388 * the role_assignments setting to know if that part needs to be included
390 class backup_roles_structure_step extends backup_structure_step {
392 protected function define_structure() {
394 // To know if we are including role assignments
395 $roleassignments = $this->get_setting_value('role_assignments');
397 // Define each element separated
399 $roles = new backup_nested_element('roles');
401 $overrides = new backup_nested_element('role_overrides');
403 $override = new backup_nested_element('override', array('id'), array(
404 'roleid', 'capability', 'permission', 'timemodified',
407 $assignments = new backup_nested_element('role_assignments');
409 $assignment = new backup_nested_element('assignment', array('id'), array(
410 'roleid', 'userid', 'timemodified', 'modifierid', 'component', 'itemid',
414 $roles->add_child($overrides);
415 $roles->add_child($assignments);
417 $overrides->add_child($override);
418 $assignments->add_child($assignment);
422 $override->set_source_table('role_capabilities', array('contextid' => backup::VAR_CONTEXTID));
424 // Assignments only added if specified
425 if ($roleassignments) {
426 $assignment->set_source_table('role_assignments', array('contextid' => backup::VAR_CONTEXTID));
429 // Define id annotations
430 $override->annotate_ids('role', 'roleid');
432 $assignment->annotate_ids('role', 'roleid');
434 $assignment->annotate_ids('user', 'userid');
436 //TODO: how do we annotate the itemid? the meaning depends on the content of component table (skodak)
443 * structure step that will generate the roles.xml containing the
444 * list of roles used along the whole backup process. Just raw
445 * list of used roles from role table
447 class backup_final_roles_structure_step extends backup_structure_step {
449 protected function define_structure() {
453 $rolesdef = new backup_nested_element('roles_definition');
455 $role = new backup_nested_element('role', array('id'), array(
456 'name', 'shortname', 'nameincourse', 'description',
457 'sortorder', 'archetype'));
461 $rolesdef->add_child($role);
465 $role->set_source_sql("SELECT r.*, rn.name AS nameincourse
467 JOIN {backup_ids_temp} bi ON r.id = bi.itemid
468 LEFT JOIN {role_names} rn ON r.id = rn.roleid AND rn.contextid = ?
469 WHERE bi.backupid = ?
470 AND bi.itemname = 'rolefinal'", array(backup::VAR_CONTEXTID, backup::VAR_BACKUPID));
472 // Return main element (rolesdef)
478 * structure step that will generate the scales.xml containing the
479 * list of scales used along the whole backup process.
481 class backup_final_scales_structure_step extends backup_structure_step {
483 protected function define_structure() {
487 $scalesdef = new backup_nested_element('scales_definition');
489 $scale = new backup_nested_element('scale', array('id'), array(
490 'courseid', 'userid', 'name', 'scale',
491 'description', 'descriptionformat', 'timemodified'));
495 $scalesdef->add_child($scale);
499 $scale->set_source_sql("SELECT s.*
501 JOIN {backup_ids_temp} bi ON s.id = bi.itemid
502 WHERE bi.backupid = ?
503 AND bi.itemname = 'scalefinal'", array(backup::VAR_BACKUPID));
505 // Return main element (scalesdef)
511 * structure step that will generate the outcomes.xml containing the
512 * list of outcomes used along the whole backup process.
514 class backup_final_outcomes_structure_step extends backup_structure_step {
516 protected function define_structure() {
520 $outcomesdef = new backup_nested_element('outcomes_definition');
522 $outcome = new backup_nested_element('outcome', array('id'), array(
523 'courseid', 'userid', 'shortname', 'fullname',
524 'scaleid', 'description', 'descriptionformat', 'timecreated',
525 'timemodified','usermodified'));
529 $outcomesdef->add_child($outcome);
533 $outcome->set_source_sql("SELECT o.*
534 FROM {grade_outcomes} o
535 JOIN {backup_ids_temp} bi ON o.id = bi.itemid
536 WHERE bi.backupid = ?
537 AND bi.itemname = 'outcomefinal'", array(backup::VAR_BACKUPID));
539 // Return main element (outcomesdef)
545 * structure step in charge of constructing the filters.xml file for all the filters found
548 class backup_filters_structure_step extends backup_structure_step {
550 protected function define_structure() {
552 // Define each element separated
554 $filters = new backup_nested_element('filters');
556 $actives = new backup_nested_element('filter_actives');
558 $active = new backup_nested_element('filter_active', null, array('filter', 'active'));
560 $configs = new backup_nested_element('filter_configs');
562 $config = new backup_nested_element('filter_config', null, array('filter', 'name', 'value'));
566 $filters->add_child($actives);
567 $filters->add_child($configs);
569 $actives->add_child($active);
570 $configs->add_child($config);
574 list($activearr, $configarr) = filter_get_all_local_settings($this->task->get_contextid());
576 $active->set_source_array($activearr);
577 $config->set_source_array($configarr);
579 // Return the root element (filters)
585 * structure step in charge of constructing the comments.xml file for all the comments found
588 class backup_comments_structure_step extends backup_structure_step {
590 protected function define_structure() {
592 // Define each element separated
594 $comments = new backup_nested_element('comments');
596 $comment = new backup_nested_element('comment', array('id'), array(
597 'commentarea', 'itemid', 'content', 'format',
598 'userid', 'timecreated'));
602 $comments->add_child($comment);
606 $comment->set_source_table('comments', array('contextid' => backup::VAR_CONTEXTID));
608 // Define id annotations
610 $comment->annotate_ids('user', 'userid');
612 // Return the root element (comments)
618 * structure step in charge of constructing the gradebook.xml file for all the gradebook config in the course
619 * NOTE: the backup of the grade items themselves is handled by backup_activity_grades_structure_step
621 class backup_gradebook_structure_step extends backup_structure_step {
624 * We need to decide conditionally, based on dynamic information
625 * about the execution of this step. Only will be executed if all
626 * the module gradeitems have been already included in backup
628 protected function execute_condition() {
629 return backup_plan_dbops::require_gradebook_backup($this->get_courseid(), $this->get_backupid());
632 protected function define_structure() {
634 // are we including user info?
635 $userinfo = $this->get_setting_value('users');
637 $gradebook = new backup_nested_element('gradebook');
639 //grade_letters are done in backup_activity_grades_structure_step()
641 //calculated grade items
642 $grade_items = new backup_nested_element('grade_items');
643 $grade_item = new backup_nested_element('grade_item', array('id'), array(
644 'categoryid', 'itemname', 'itemtype', 'itemmodule',
645 'iteminstance', 'itemnumber', 'iteminfo', 'idnumber',
646 'calculation', 'gradetype', 'grademax', 'grademin',
647 'scaleid', 'outcomeid', 'gradepass', 'multfactor',
648 'plusfactor', 'aggregationcoef', 'sortorder', 'display',
649 'decimals', 'hidden', 'locked', 'locktime',
650 'needsupdate', 'timecreated', 'timemodified'));
652 $grade_grades = new backup_nested_element('grade_grades');
653 $grade_grade = new backup_nested_element('grade_grade', array('id'), array(
654 'userid', 'rawgrade', 'rawgrademax', 'rawgrademin',
655 'rawscaleid', 'usermodified', 'finalgrade', 'hidden',
656 'locked', 'locktime', 'exported', 'overridden',
657 'excluded', 'feedback', 'feedbackformat', 'information',
658 'informationformat', 'timecreated', 'timemodified'));
661 $grade_categories = new backup_nested_element('grade_categories');
662 $grade_category = new backup_nested_element('grade_category', null, array('courseid',
663 'parent', 'depth', 'path', 'fullname', 'aggregation', 'keephigh',
664 'dropload', 'aggregateonlygraded', 'aggregateoutcomes', 'aggregatesubcats',
665 'timecreated', 'timemodified'));
667 $letters = new backup_nested_element('grade_letters');
668 $letter = new backup_nested_element('grade_letter', 'id', array(
669 'lowerboundary', 'letter'));
674 $gradebook->add_child($grade_items);
675 $grade_items->add_child($grade_item);
676 $grade_item->add_child($grade_grades);
677 $grade_grades->add_child($grade_grade);
679 //$grade_item->add_child($grade_scale);
681 $gradebook->add_child($grade_categories);
682 $grade_categories->add_child($grade_category);
684 $gradebook->add_child($letters);
685 $letters->add_child($letter);
689 //Include manual, category and the course grade item
690 $grade_items_sql ="SELECT * FROM {grade_items}
691 WHERE courseid = :courseid
692 AND (itemtype='manual' OR itemtype='course' OR itemtype='category')";
693 $grade_items_params = array('courseid'=>backup::VAR_COURSEID);
694 $grade_item->set_source_sql($grade_items_sql, $grade_items_params);
697 $grade_grade->set_source_table('grade_grades', array('itemid' => backup::VAR_PARENTID));
700 $grade_category_sql = "SELECT gc.*, gi.sortorder
701 FROM {grade_categories} gc
702 JOIN {grade_items} gi ON (gi.iteminstance = gc.id)
703 WHERE gc.courseid = :courseid
704 AND (gi.itemtype='course' OR gi.itemtype='category')
705 ORDER BY gc.parent ASC";//need parent categories before their children
706 $grade_category_params = array('courseid'=>backup::VAR_COURSEID);
707 $grade_category->set_source_sql($grade_category_sql, $grade_category_params);
709 $letter->set_source_table('grade_letters', array('contextid' => backup::VAR_CONTEXTID));
712 $grade_item->annotate_ids('scalefinal', 'scaleid'); // Straight as scalefinal because it's > 0
713 $grade_item->annotate_ids('outcome', 'outcomeid');
715 // Return the root element
721 * structure step in charge if constructing the completion.xml file for all the users completion
722 * information in a given activity
724 class backup_userscompletion_structure_step extends backup_structure_step {
726 protected function define_structure() {
728 // Define each element separated
730 $completions = new backup_nested_element('completions');
732 $completion = new backup_nested_element('completion', array('id'), array(
733 'userid', 'completionstate', 'viewed', 'timemodified'));
737 $completions->add_child($completion);
741 $completion->set_source_table('course_modules_completion', array('coursemoduleid' => backup::VAR_MODID));
743 // Define id annotations
745 $completion->annotate_ids('user', 'userid');
747 // Return the root element (completions)
753 * structure step in charge of constructing the main groups.xml file for all the groups and
754 * groupings information already annotated
756 class backup_groups_structure_step extends backup_structure_step {
758 protected function define_structure() {
760 // To know if we are including users
761 $users = $this->get_setting_value('users');
763 // Define each element separated
765 $groups = new backup_nested_element('groups');
767 $group = new backup_nested_element('group', array('id'), array(
768 'name', 'description', 'descriptionformat', 'enrolmentkey',
769 'picture', 'hidepicture', 'timecreated', 'timemodified'));
771 $members = new backup_nested_element('group_members');
773 $member = new backup_nested_element('group_member', array('id'), array(
774 'userid', 'timeadded'));
776 $groupings = new backup_nested_element('groupings');
778 $grouping = new backup_nested_element('grouping', 'id', array(
779 'name', 'description', 'descriptionformat', 'configdata',
780 'timecreated', 'timemodified'));
782 $groupinggroups = new backup_nested_element('grouping_groups');
784 $groupinggroup = new backup_nested_element('grouping_group', array('id'), array(
785 'groupid', 'timeadded'));
789 $groups->add_child($group);
790 $groups->add_child($groupings);
792 $group->add_child($members);
793 $members->add_child($member);
795 $groupings->add_child($grouping);
796 $grouping->add_child($groupinggroups);
797 $groupinggroups->add_child($groupinggroup);
801 $group->set_source_sql("
804 JOIN {backup_ids_temp} bi ON g.id = bi.itemid
805 WHERE bi.backupid = ?
806 AND bi.itemname = 'groupfinal'", array(backup::VAR_BACKUPID));
808 // This only happens if we are including users
810 $member->set_source_table('groups_members', array('groupid' => backup::VAR_PARENTID));
813 $grouping->set_source_sql("
816 JOIN {backup_ids_temp} bi ON g.id = bi.itemid
817 WHERE bi.backupid = ?
818 AND bi.itemname = 'groupingfinal'", array(backup::VAR_BACKUPID));
820 $groupinggroup->set_source_table('groupings_groups', array('groupingid' => backup::VAR_PARENTID));
822 // Define id annotations (as final)
824 $member->annotate_ids('userfinal', 'userid');
826 // Define file annotations
828 $group->annotate_files('group', 'description', 'id');
829 $group->annotate_files('group', 'icon', 'id');
831 // Return the root element (groups)
837 * structure step in charge of constructing the main users.xml file for all the users already
838 * annotated (final). Includes custom profile fields, preferences, tags, role assignments and
841 class backup_users_structure_step extends backup_structure_step {
843 protected function define_structure() {
846 // To know if we are anonymizing users
847 $anonymize = $this->get_setting_value('anonymize');
848 // To know if we are including role assignments
849 $roleassignments = $this->get_setting_value('role_assignments');
851 // Define each element separated
853 $users = new backup_nested_element('users');
855 // Create the array of user fields by hand, as far as we have various bits to control
856 // anonymize option, password backup, mnethostid...
858 // First, the fields not needing anonymization nor special handling
859 $normalfields = array(
860 'confirmed', 'policyagreed', 'deleted',
861 'lang', 'theme', 'timezone', 'firstaccess',
862 'lastaccess', 'lastlogin', 'currentlogin', 'secret',
863 'mailformat', 'maildigest', 'maildisplay', 'htmleditor',
864 'ajax', 'autosubscribe', 'trackforums', 'timecreated',
865 'timemodified', 'trustbitmask', 'screenreader');
867 // Then, the fields potentially needing anonymization
869 'username', 'idnumber', 'firstname', 'lastname',
870 'email', 'emailstop', 'lastip', 'picture',
871 'url', 'description', 'description_format', 'imagealt', 'auth');
873 // Add anonymized fields to $userfields with custom final element
874 foreach ($anonfields as $field) {
876 $userfields[] = new anonymizer_final_element($field);
878 $userfields[] = $field; // No anonymization, normally added
882 // mnethosturl requires special handling (custom final element)
883 $userfields[] = new mnethosturl_final_element('mnethosturl');
885 // password added conditionally
886 if (!empty($CFG->includeuserpasswordsinbackup)) {
887 $userfields[] = 'password';
890 // Merge all the fields
891 $userfields = array_merge($userfields, $normalfields);
893 $user = new backup_nested_element('user', array('id', 'contextid'), $userfields);
895 $customfields = new backup_nested_element('custom_fields');
897 $customfield = new backup_nested_element('custom_field', array('id'), array(
898 'field_name', 'field_type', 'field_data'));
900 $tags = new backup_nested_element('tags');
902 $tag = new backup_nested_element('tag', array('id'), array(
905 $preferences = new backup_nested_element('preferences');
907 $preference = new backup_nested_element('preference', array('id'), array(
910 $roles = new backup_nested_element('roles');
912 $overrides = new backup_nested_element('role_overrides');
914 $override = new backup_nested_element('override', array('id'), array(
915 'roleid', 'capability', 'permission', 'timemodified',
918 $assignments = new backup_nested_element('role_assignments');
920 $assignment = new backup_nested_element('assignment', array('id'), array(
921 'roleid', 'userid', 'timemodified', 'modifierid', 'component', //TODO: MDL-22793 add itemid here
926 $users->add_child($user);
928 $user->add_child($customfields);
929 $customfields->add_child($customfield);
931 $user->add_child($tags);
932 $tags->add_child($tag);
934 $user->add_child($preferences);
935 $preferences->add_child($preference);
937 $user->add_child($roles);
939 $roles->add_child($overrides);
940 $roles->add_child($assignments);
942 $overrides->add_child($override);
943 $assignments->add_child($assignment);
947 $user->set_source_sql('SELECT u.*, c.id AS contextid, m.wwwroot AS mnethosturl
949 JOIN {backup_ids_temp} bi ON bi.itemid = u.id
950 JOIN {context} c ON c.instanceid = u.id
951 LEFT JOIN {mnet_host} m ON m.id = u.mnethostid
952 WHERE bi.backupid = ?
954 AND c.contextlevel = ?', array(
955 backup_helper::is_sqlparam($this->get_backupid()),
956 backup_helper::is_sqlparam('userfinal'),
957 backup_helper::is_sqlparam(CONTEXT_USER)));
959 // All the rest on information is only added if we arent
960 // in an anonymized backup
962 $customfield->set_source_sql('SELECT f.id, f.shortname, f.datatype, d.data
963 FROM {user_info_field} f
964 JOIN {user_info_data} d ON d.fieldid = f.id
965 WHERE d.userid = ?', array(backup::VAR_PARENTID));
967 $customfield->set_source_alias('shortname', 'field_name');
968 $customfield->set_source_alias('datatype', 'field_type');
969 $customfield->set_source_alias('data', 'field_data');
971 $tag->set_source_sql('SELECT t.id, t.name, t.rawname
973 JOIN {tag_instance} ti ON ti.tagid = t.id
974 WHERE ti.itemtype = ?
975 AND ti.itemid = ?', array(
976 backup_helper::is_sqlparam('user'),
977 backup::VAR_PARENTID));
979 $preference->set_source_table('user_preferences', array('userid' => backup::VAR_PARENTID));
981 $override->set_source_table('role_capabilities', array('contextid' => '/users/user/contextid'));
983 // Assignments only added if specified
984 if ($roleassignments) {
985 $assignment->set_source_table('role_assignments', array('contextid' => '/users/user/contextid'));
988 // Define id annotations (as final)
989 $override->annotate_ids('rolefinal', 'roleid');
992 // Return root element (users)
998 * structure step in charge of constructing the block.xml file for one
999 * given block (instance and positions). If the block has custom DB structure
1000 * that will go to a separate file (different step defined in block class)
1002 class backup_block_instance_structure_step extends backup_structure_step {
1004 protected function define_structure() {
1007 // Define each element separated
1009 $block = new backup_nested_element('block', array('id', 'contextid', 'version'), array(
1010 'blockname', 'parentcontextid', 'showinsubcontexts', 'pagetypepattern',
1011 'subpagepattern', 'defaultregion', 'defaultweight', 'configdata'));
1013 $positions = new backup_nested_element('block_positions', null, array(
1014 'contextid', 'pagetype', 'subpage', 'visible',
1015 'region', 'weight'));
1019 $block->add_child($positions);
1021 // Transform configdata information if needed (process links and friends)
1022 $blockrec = $DB->get_record('block_instances', array('id' => $this->task->get_blockid()));
1023 if ($attrstotransform = $this->task->get_configdata_encoded_attributes()) {
1024 $configdata = (array)unserialize(base64_decode($blockrec->configdata));
1025 foreach ($configdata as $attribute => $value) {
1026 if (in_array($attribute, $attrstotransform)) {
1027 $configdata[$attribute] = $this->contenttransformer->process($value);
1030 $blockrec->configdata = base64_encode(serialize((object)$configdata));
1032 $blockrec->contextid = $this->task->get_contextid();
1033 // Get the version of the block
1034 $blockrec->version = $DB->get_field('block', 'version', array('name' => $this->task->get_blockname()));
1038 $block->set_source_array(array($blockrec));
1040 $positions->set_source_table('block_positions', array('blockinstanceid' => backup::VAR_PARENTID));
1042 // Return the root element (block)
1048 * structure step in charge of constructing the logs.xml file for all the log records found
1051 class backup_activity_logs_structure_step extends backup_structure_step {
1053 protected function define_structure() {
1055 // Define each element separated
1057 $logs = new backup_nested_element('logs');
1059 $log = new backup_nested_element('log', array('id'), array(
1060 'time', 'userid', 'ip', 'module',
1061 'action', 'url', 'info'));
1065 $logs->add_child($log);
1069 $log->set_source_table('log', array('cmid' => backup::VAR_MODID));
1072 // NOTE: We don't annotate users from logs as far as they MUST be
1073 // always annotated by the activity.
1075 // Return the root element (logs)
1082 * structure in charge of constructing the inforef.xml file for all the items we want
1083 * to have referenced there (users, roles, files...)
1085 class backup_inforef_structure_step extends backup_structure_step {
1087 protected function define_structure() {
1089 // Items we want to include in the inforef file. NOTE: Important to keep this
1090 // list 100% sync with the one in next step! Until we get better place for it (backup:CONST)
1091 $items = array('user', 'grouping', 'group', 'role', 'file', 'scale', 'outcome', 'grade_item');
1095 $inforef = new backup_nested_element('inforef');
1097 // For each item, conditionally, if there are already records, build element
1098 foreach ($items as $itemname) {
1099 if (backup_structure_dbops::annotations_exist($this->get_backupid(), $itemname)) {
1100 $elementroot = new backup_nested_element($itemname . 'ref');
1101 $element = new backup_nested_element($itemname, array('id'));
1102 $inforef->add_child($elementroot);
1103 $elementroot->add_child($element);
1104 $element->set_source_sql("
1106 FROM {backup_ids_temp}
1109 array(backup::VAR_BACKUPID, backup_helper::is_sqlparam($itemname)));
1113 // We don't annotate anything there, but rely in the next step
1114 // (move_inforef_annotations_to_final) that will change all the
1115 // already saved 'inforref' entries to their 'final' annotations.
1121 * This step will get all the annotations already processed to inforef.xml file and
1122 * transform them into 'final' annotations.
1124 class move_inforef_annotations_to_final extends backup_execution_step {
1126 protected function define_execution() {
1128 // Items we want to include in the inforef file. NOTE: Important to keep this
1129 // list 100% sync with the one in prev step! Until we get better place for it (backup:CONST)
1130 $items = array('user', 'grouping', 'group', 'role', 'file', 'scale', 'outcome', 'grade_item');
1131 foreach ($items as $itemname) {
1132 // Delegate to dbops
1133 backup_structure_dbops::move_annotations_to_final($this->get_backupid(), $itemname);
1139 * structure in charge of constructing the files.xml file with all the
1140 * annotated (final) files along the process. At, the same time, and
1141 * using one specialised nested_element, will copy them form moodle storage
1144 class backup_final_files_structure_step extends backup_structure_step {
1146 protected function define_structure() {
1150 $files = new backup_nested_element('files');
1152 $file = new file_nested_element('file', array('id'), array(
1153 'contenthash', 'contextid', 'component', 'filearea', 'itemid',
1154 'filepath', 'filename', 'userid', 'filesize',
1155 'mimetype', 'status', 'timecreated', 'timemodified',
1156 'source', 'author', 'license', 'sortorder'));
1160 $files->add_child($file);
1164 $file->set_source_sql("SELECT f.*
1166 JOIN {backup_ids_temp} bi ON f.id = bi.itemid
1167 WHERE bi.backupid = ?
1168 AND bi.itemname = 'filefinal'", array(backup::VAR_BACKUPID));
1175 * Structure step in charge of creating the main moodle_backup.xml file
1176 * where all the information related to the backup, settings, license and
1177 * other information needed on restore is added*/
1178 class backup_main_structure_step extends backup_structure_step {
1180 protected function define_structure() {
1186 $info['name'] = $this->get_setting_value('filename');
1187 $info['moodle_version'] = $CFG->version;
1188 $info['moodle_release'] = $CFG->release;
1189 $info['backup_version'] = $CFG->backup_version;
1190 $info['backup_release'] = $CFG->backup_release;
1191 $info['backup_date'] = time();
1192 $info['backup_uniqueid']= $this->get_backupid();
1193 $info['original_wwwroot']=$CFG->wwwroot;
1194 $info['original_site_identifier'] = get_site_identifier();
1195 $info['original_course_id'] = $this->get_courseid();
1197 // Get more information from controller
1198 list($dinfo, $cinfo, $sinfo) = backup_controller_dbops::get_moodle_backup_information($this->get_backupid());
1202 $moodle_backup = new backup_nested_element('moodle_backup');
1204 $information = new backup_nested_element('information', null, array(
1205 'name', 'moodle_version', 'moodle_release', 'backup_version',
1206 'backup_release', 'backup_date', 'original_wwwroot',
1207 'original_site_identifier', 'original_course_id'));
1209 $details = new backup_nested_element('details');
1211 $detail = new backup_nested_element('detail', array('backup_id'), array(
1212 'type', 'format', 'interactive', 'mode',
1213 'execution', 'executiontime'));
1215 $contents = new backup_nested_element('contents');
1217 $activities = new backup_nested_element('activities');
1219 $activity = new backup_nested_element('activity', null, array(
1220 'moduleid', 'sectionid', 'modulename', 'title',
1223 $sections = new backup_nested_element('sections');
1225 $section = new backup_nested_element('section', null, array(
1226 'sectionid', 'title', 'directory'));
1228 $course = new backup_nested_element('course', null, array(
1229 'courseid', 'title', 'directory'));
1231 $settings = new backup_nested_element('settings');
1233 $setting = new backup_nested_element('setting', null, array(
1234 'level', 'section', 'activity', 'name', 'value'));
1238 $moodle_backup->add_child($information);
1240 $information->add_child($details);
1241 $details->add_child($detail);
1243 $information->add_child($contents);
1244 if (!empty($cinfo['activities'])) {
1245 $contents->add_child($activities);
1246 $activities->add_child($activity);
1248 if (!empty($cinfo['sections'])) {
1249 $contents->add_child($sections);
1250 $sections->add_child($section);
1252 if (!empty($cinfo['course'])) {
1253 $contents->add_child($course);
1256 $information->add_child($settings);
1257 $settings->add_child($setting);
1262 $information->set_source_array(array((object)$info));
1264 $detail->set_source_array($dinfo);
1266 $activity->set_source_array($cinfo['activities']);
1268 $section->set_source_array($cinfo['sections']);
1270 $course->set_source_array($cinfo['course']);
1272 $setting->set_source_array($sinfo);
1274 // Prepare some information to be sent to main moodle_backup.xml file
1275 return $moodle_backup;
1281 * Execution step that will generate the final zip file with all the contents
1283 class backup_zip_contents extends backup_execution_step {
1285 protected function define_execution() {
1288 $basepath = $this->get_basepath();
1290 // Get the list of files in directory
1291 $filestemp = get_directory_list($basepath, '', false, true, true);
1293 foreach ($filestemp as $file) { // Add zip paths and fs paths to all them
1294 $files[$file] = $basepath . '/' . $file;
1297 // Add the log file if exists
1298 $logfilepath = $basepath . '.log';
1299 if (file_exists($logfilepath)) {
1300 $files['moodle_backup.log'] = $logfilepath;
1303 // Calculate the zip fullpath (in OS temp area it's always backup.zip)
1304 $zipfile = $basepath . '/backup.zip';
1306 // Get the zip packer
1307 $zippacker = get_file_packer('application/zip');
1310 $zippacker->archive_to_pathname($files, $zipfile);
1315 * This step will send the generated backup file to its final destination
1317 class backup_store_backup_file extends backup_execution_step {
1319 protected function define_execution() {
1322 $basepath = $this->get_basepath();
1324 // Calculate the zip fullpath (in OS temp area it's always backup.zip)
1325 $zipfile = $basepath . '/backup.zip';
1327 // Perform storage and return it (TODO: shouldn't be array but proper result object)
1328 return array('backup_destination' => backup_helper::store_backup_file($this->get_backupid(), $zipfile));
1334 * This step will search for all the activity (not calculations, categories nor aggregations) grade items
1335 * and put them to the backup_ids tables, to be used later as base to backup them
1337 class backup_activity_grade_items_to_ids extends backup_execution_step {
1339 protected function define_execution() {
1341 // Fetch all activity grade items
1342 if ($items = grade_item::fetch_all(array(
1343 'itemtype' => 'mod', 'itemmodule' => $this->task->get_modulename(),
1344 'iteminstance' => $this->task->get_activityid(), 'courseid' => $this->task->get_courseid()))) {
1345 // Annotate them in backup_ids
1346 foreach ($items as $item) {
1347 backup_structure_dbops::insert_backup_ids_record($this->get_backupid(), 'grade_item', $item->id);
1354 * This step will annotate all the groups belonging to already annotated groupings
1356 class backup_annotate_groups_from_groupings extends backup_execution_step {
1358 protected function define_execution() {
1361 // Fetch all the annotated groupings
1362 if ($groupings = $DB->get_records('backup_ids_temp', array(
1363 'backupid' => $this->get_backupid(), 'itemname' => 'grouping'))) {
1364 foreach ($groupings as $grouping) {
1365 if ($groups = $DB->get_records('groupings_groups', array(
1366 'groupingid' => $grouping->itemid))) {
1367 foreach ($groups as $group) {
1368 backup_structure_dbops::insert_backup_ids_record($this->get_backupid(), 'group', $group->groupid);
1377 * This step will annotate all the scales belonging to already annotated outcomes
1379 class backup_annotate_scales_from_outcomes extends backup_execution_step {
1381 protected function define_execution() {
1384 // Fetch all the annotated outcomes
1385 if ($outcomes = $DB->get_records('backup_ids_temp', array(
1386 'backupid' => $this->get_backupid(), 'itemname' => 'outcome'))) {
1387 foreach ($outcomes as $outcome) {
1388 if ($scale = $DB->get_record('grade_outcomes', array(
1389 'id' => $outcome->itemid))) {
1390 // Annotate as scalefinal because it's > 0
1391 backup_structure_dbops::insert_backup_ids_record($this->get_backupid(), 'scalefinal', $scale->scaleid);
1399 * This step will generate all the user annotations for the already
1400 * annotated (final) users. Need to do this here because each user
1401 * has its own context and structure tasks only are able to handle
1402 * one context. Also, this step will guarantee that every user has
1403 * its context created (req for other steps)
1405 class backup_annotate_all_user_files extends backup_execution_step {
1407 protected function define_execution() {
1410 // List of fileareas we are going to annotate
1411 $fileareas = array('private', 'profile', 'icon');
1413 // Fetch all annotated (final) users
1414 $rs = $DB->get_recordset('backup_ids_temp', array(
1415 'backupid' => $this->get_backupid(), 'itemname' => 'userfinal'));
1416 foreach ($rs as $record) {
1417 $userid = $record->itemid;
1418 $userctxid = get_context_instance(CONTEXT_USER, $userid)->id;
1419 // Proceed with every user filearea
1420 foreach ($fileareas as $filearea) {
1421 // We don't need to specify itemid ($userid - 5th param) as far as by
1422 // context we can get all the associated files. See MDL-22092
1423 backup_structure_dbops::annotate_files($this->get_backupid(), $userctxid, 'user', $filearea, null);
1431 * structure step in charge of constructing the grades.xml file for all the grade items
1432 * and letters related to one activity
1434 class backup_activity_grades_structure_step extends backup_structure_step {
1436 protected function define_structure() {
1438 // To know if we are including userinfo
1439 $userinfo = $this->get_setting_value('userinfo');
1441 // Define each element separated
1443 $book = new backup_nested_element('activity_gradebook');
1445 $items = new backup_nested_element('grade_items');
1447 $item = new backup_nested_element('grade_item', array('id'), array(
1448 'categoryid', 'itemname', 'itemtype', 'itemmodule',
1449 'iteminstance', 'itemnumber', 'iteminfo', 'idnumber',
1450 'calculation', 'gradetype', 'grademax', 'grademin',
1451 'scaleid', 'outcomeid', 'gradepass', 'multfactor',
1452 'plusfactor', 'aggregationcoef', 'sortorder', 'display',
1453 'decimals', 'hidden', 'locked', 'locktime',
1454 'needsupdate', 'timecreated', 'timemodified'));
1456 $grades = new backup_nested_element('grade_grades');
1458 $grade = new backup_nested_element('grade_grade', array('id'), array(
1459 'userid', 'rawgrade', 'rawgrademax', 'rawgrademin',
1460 'rawscaleid', 'usermodified', 'finalgrade', 'hidden',
1461 'locked', 'locktime', 'exported', 'overridden',
1462 'excluded', 'feedback', 'feedbackformat', 'information',
1463 'informationformat', 'timecreated', 'timemodified'));
1465 $letters = new backup_nested_element('grade_letters');
1467 $letter = new backup_nested_element('grade_letter', 'id', array(
1468 'lowerboundary', 'letter'));
1472 $book->add_child($items);
1473 $items->add_child($item);
1475 $item->add_child($grades);
1476 $grades->add_child($grade);
1478 $book->add_child($letters);
1479 $letters->add_child($letter);
1483 $item->set_source_sql("SELECT gi.*
1484 FROM {grade_items} gi
1485 JOIN {backup_ids_temp} bi ON gi.id = bi.itemid
1486 WHERE bi.backupid = ?
1487 AND bi.itemname = 'grade_item'", array(backup::VAR_BACKUPID));
1489 // This only happens if we are including user info
1491 $grade->set_source_table('grade_grades', array('itemid' => backup::VAR_PARENTID));
1494 $letter->set_source_table('grade_letters', array('contextid' => backup::VAR_CONTEXTID));
1498 $item->annotate_ids('scalefinal', 'scaleid'); // Straight as scalefinal because it's > 0
1499 $item->annotate_ids('outcome', 'outcomeid');
1501 $grade->annotate_ids('user', 'userid');
1502 $grade->annotate_ids('user', 'usermodified');
1504 // Return the root element (book)