backup/backup.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   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.
   9 //
  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.
  14 //
  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/>.
  17
  18 require_once('../config.php');
  19 require_once($CFG->dirroot . '/backup/util/includes/backup_includes.php');
  20 require_once($CFG->dirroot . '/backup/moodle2/backup_plan_builder.class.php');
  21
  22
  23 $courseid = required_param('id', PARAM_INT);
  24 $sectionid = optional_param('section', null, PARAM_INT);
  25 $cmid = optional_param('cm', null, PARAM_INT);
  26 /**
  27  * Part of the forms in stages after initial, is POST never GET
  28  */
  29 $backupid = optional_param('backup', false, PARAM_ALPHANUM);
  30
  31 $url = new moodle_url('/backup/backup.php', array('id'=>$courseid));
  32 if ($sectionid !== null) {
  33     $url->param('section', $sectionid);
  34 }
  35 if ($cmid !== null) {
  36     $url->param('cm', $cmid);
  37 }
  38 $PAGE->set_url($url);
  39 $PAGE->set_pagelayout('admin');
  40
  41 $id = $courseid;
  42 $cm = null;
  43 $course = $DB->get_record('course', array('id'=>$courseid), '*', MUST_EXIST);
  44 $type = backup::TYPE_1COURSE;
  45 if (!is_null($sectionid)) {
  46     $section = $DB->get_record('course_sections', array('course'=>$course->id, 'id'=>$sectionid), '*', MUST_EXIST);
  47     $type = backup::TYPE_1SECTION;
  48     $id = $sectionid;
  49 }
  50 if (!is_null($cmid)) {
  51     $cm = get_coursemodule_from_id(null, $cmid, $course->id, false, MUST_EXIST);
  52     $type = backup::TYPE_1ACTIVITY;
  53     $id = $cmid;
  54 }
  55 require_login($course, false, $cm);
  56
  57 switch ($type) {
  58     case backup::TYPE_1COURSE :
  59         require_capability('moodle/backup:backupcourse', context_course::instance($course->id));
  60         $heading = get_string('backupcourse', 'backup', $course->shortname);
  61         break;
  62     case backup::TYPE_1SECTION :
  63         $coursecontext = context_course::instance($course->id);
  64         require_capability('moodle/backup:backupsection', $coursecontext);
  65         if ((string)$section->name !== '') {
  66             $sectionname = format_string($section->name, true, array('context' => $coursecontext));
  67             $heading = get_string('backupsection', 'backup', $sectionname);
  68             $PAGE->navbar->add($sectionname);
  69         } else {
  70             $heading = get_string('backupsection', 'backup', $section->section);
  71             $PAGE->navbar->add(get_string('section').' '.$section->section);
  72         }
  73         break;
  74     case backup::TYPE_1ACTIVITY :
  75         require_capability('moodle/backup:backupactivity', context_module::instance($cm->id));
  76         $heading = get_string('backupactivity', 'backup', $cm->name);
  77         break;
  78     default :
  79         print_error('unknownbackuptype');
  80 }
  81
  82 // Backup of large courses requires extra memory. Use the amount configured
  83 // in admin settings.
  84 raise_memory_limit(MEMORY_EXTRA);
  85
  86 if (!($bc = backup_ui::load_controller($backupid))) {
  87     $bc = new backup_controller($type, $id, backup::FORMAT_MOODLE,
  88                             backup::INTERACTIVE_YES, backup::MODE_GENERAL, $USER->id);
  89 }
  90 $backup = new backup_ui($bc);
  91
  92 $PAGE->set_title($heading);
  93 $PAGE->set_heading($heading);
  94
  95 $renderer = $PAGE->get_renderer('core','backup');
  96 echo $OUTPUT->header();
  97
  98 // Prepare a progress bar which can display optionally during long-running
  99 // operations while setting up the UI.
 100 $slowprogress = new \core\progress\display_if_slow(get_string('preparingui', 'backup'));
 101
 102 $previous = optional_param('previous', false, PARAM_BOOL);
 103 if ($backup->get_stage() == backup_ui::STAGE_SCHEMA && !$previous) {
 104     // After schema stage, we are probably going to get to the confirmation stage,
 105     // The confirmation stage has 2 sets of progress, so this is needed to prevent
 106     // it showing 2 progress bars.
 107     $twobars = true;
 108     $slowprogress->start_progress('', 2);
 109 } else {
 110     $twobars = false;
 111 }
 112 $backup->get_controller()->set_progress($slowprogress);
 113 $backup->process();
 114
 115 if ($backup->enforce_changed_dependencies()) {
 116     debugging('Your settings have been altered due to unmet dependencies', DEBUG_DEVELOPER);
 117 }
 118
 119 $loghtml = '';
 120 if ($backup->get_stage() == backup_ui::STAGE_FINAL) {
 121     // Display an extra backup step bar so that we can show the 'processing' step first.
 122     echo html_writer::start_div('', array('id' => 'executionprogress'));
 123     echo $renderer->progress_bar($backup->get_progress_bar());
 124     $backup->get_controller()->set_progress(new \core\progress\display());
 125
 126     // Prepare logger and add to end of chain.
 127     $logger = new core_backup_html_logger($CFG->debugdeveloper ? backup::LOG_DEBUG : backup::LOG_INFO);
 128     $backup->get_controller()->add_logger($logger);
 129
 130     // Carry out actual backup.
 131     $backup->execute();
 132
 133     // Backup controller gets saved/loaded so the logger object changes and we
 134     // have to retrieve it.
 135     $logger = $backup->get_controller()->get_logger();
 136     while (!is_a($logger, 'core_backup_html_logger')) {
 137         $logger = $logger->get_next();
 138     }
 139
 140     // Get HTML from logger.
 141     $loghtml = $logger->get_html();
 142
 143     // Hide the progress display and first backup step bar (the 'finished' step will show next).
 144     echo html_writer::end_div();
 145     echo html_writer::script('document.getElementById("executionprogress").style.display = "none";');
 146 } else {
 147     $backup->save_controller();
 148 }
 149
 150 // Displaying UI can require progress reporting, so do it here before outputting
 151 // the backup stage bar (as part of the existing progress bar, if required).
 152 $ui = $backup->display($renderer);
 153 if ($twobars) {
 154     $slowprogress->end_progress();
 155 }
 156
 157 echo $renderer->progress_bar($backup->get_progress_bar());
 158
 159 echo $ui;
 160 $backup->destroy();
 161 unset($backup);
 162
 163 // Display log data if there was any.
 164 if ($loghtml != '') {
 165     echo $renderer->log_display($loghtml);
 166 }
 167
 168 echo $OUTPUT->footer();