backup/restore.php

   1 <?php
   2     //This script is used to configure and execute the restore proccess.
   3
   4 require_once('../config.php');
   5 require_once($CFG->dirroot . '/backup/util/includes/restore_includes.php');
   6
   7 $contextid   = required_param('contextid', PARAM_INT);
   8 $stage       = optional_param('stage', restore_ui::STAGE_CONFIRM, PARAM_INT);
   9 $cancel      = optional_param('cancel', '', PARAM_ALPHA);
  10
  11 list($context, $course, $cm) = get_context_info_array($contextid);
  12
  13 navigation_node::override_active_url(new moodle_url('/backup/restorefile.php', array('contextid'=>$contextid)));
  14 $PAGE->set_url(new moodle_url('/backup/restore.php', array('contextid'=>$contextid)));
  15 $PAGE->set_context($context);
  16 $PAGE->set_pagelayout('admin');
  17
  18 require_login($course, null, $cm);
  19 require_capability('moodle/restore:restorecourse', $context);
  20
  21 if (is_null($course)) {
  22     $coursefullname = $SITE->fullname;
  23     $courseshortname = $SITE->shortname;
  24 } else {
  25     $coursefullname = $course->fullname;
  26     $courseshortname = $course->shortname;
  27 }
  28
  29 // Show page header.
  30 $PAGE->set_title($courseshortname . ': ' . get_string('restore'));
  31 $PAGE->set_heading($coursefullname);
  32
  33 $renderer = $PAGE->get_renderer('core','backup');
  34 if (empty($cancel)) {
  35     // Do not print the header if user cancelled the process, as we are going to redirect the user.
  36     echo $OUTPUT->header();
  37 }
  38
  39 // Prepare a progress bar which can display optionally during long-running
  40 // operations while setting up the UI.
  41 $slowprogress = new \core\progress\display_if_slow(get_string('preparingui', 'backup'));
  42
  43 // Overall, allow 10 units of progress.
  44 $slowprogress->start_progress('', 10);
  45
  46 // This progress section counts for loading the restore controller.
  47 $slowprogress->start_progress('', 1, 1);
  48
  49 // Restore of large courses requires extra memory. Use the amount configured
  50 // in admin settings.
  51 raise_memory_limit(MEMORY_EXTRA);
  52
  53 if ($stage & restore_ui::STAGE_CONFIRM + restore_ui::STAGE_DESTINATION) {
  54     $restore = restore_ui::engage_independent_stage($stage, $contextid);
  55 } else {
  56     $restoreid = optional_param('restore', false, PARAM_ALPHANUM);
  57     $rc = restore_ui::load_controller($restoreid);
  58     if (!$rc) {
  59         $restore = restore_ui::engage_independent_stage($stage/2, $contextid);
  60         if ($restore->process()) {
  61             $rc = new restore_controller($restore->get_filepath(), $restore->get_course_id(), backup::INTERACTIVE_YES,
  62                                 backup::MODE_GENERAL, $USER->id, $restore->get_target());
  63         }
  64     }
  65     if ($rc) {
  66         // check if the format conversion must happen first
  67         if ($rc->get_status() == backup::STATUS_REQUIRE_CONV) {
  68             $rc->convert();
  69         }
  70
  71         $restore = new restore_ui($rc, array('contextid'=>$context->id));
  72     }
  73 }
  74
  75 // End progress section for loading restore controller.
  76 $slowprogress->end_progress();
  77
  78 // This progress section is for the 'process' function below.
  79 $slowprogress->start_progress('', 1, 9);
  80
  81 // Depending on the code branch above, $restore may be a restore_ui or it may
  82 // be a restore_ui_independent_stage. Either way, this function exists.
  83 $restore->set_progress_reporter($slowprogress);
  84 $outcome = $restore->process();
  85
  86 if (!$restore->is_independent() && $restore->enforce_changed_dependencies()) {
  87     debugging('Your settings have been altered due to unmet dependencies', DEBUG_DEVELOPER);
  88 }
  89
  90 $loghtml = '';
  91 // Finish the 'process' progress reporting section, and the overall count.
  92 $slowprogress->end_progress();
  93 $slowprogress->end_progress();
  94
  95 if (!$restore->is_independent()) {
  96     // Use a temporary (disappearing) progress bar to show the precheck progress if any.
  97     $precheckprogress = new \core\progress\display_if_slow(get_string('preparingdata', 'backup'));
  98     $restore->get_controller()->set_progress($precheckprogress);
  99     if ($restore->get_stage() == restore_ui::STAGE_PROCESS && !$restore->requires_substage()) {
 100         try {
 101             // Div used to hide the 'progress' step once the page gets onto 'finished'.
 102             echo html_writer::start_div('', array('id' => 'executionprogress'));
 103             // Show the current restore state (header with bolded item).
 104             echo $renderer->progress_bar($restore->get_progress_bar());
 105             // Start displaying the actual progress bar percentage.
 106             $restore->get_controller()->set_progress(new \core\progress\display());
 107             // Prepare logger.
 108             $logger = new core_backup_html_logger($CFG->debugdeveloper ? backup::LOG_DEBUG : backup::LOG_INFO);
 109             $restore->get_controller()->add_logger($logger);
 110             // Do actual restore.
 111             $restore->execute();
 112             // Get HTML from logger.
 113             $loghtml = $logger->get_html();
 114             // Hide this section because we are now going to make the page show 'finished'.
 115             echo html_writer::end_div();
 116             echo html_writer::script('document.getElementById("executionprogress").style.display = "none";');
 117         } catch(Exception $e) {
 118             $restore->cleanup();
 119             throw $e;
 120         }
 121     } else {
 122         $restore->save_controller();
 123     }
 124 }
 125
 126 echo $renderer->progress_bar($restore->get_progress_bar());
 127 echo $restore->display($renderer);
 128 $restore->destroy();
 129 unset($restore);
 130
 131 // Display log data if there was any.
 132 if ($loghtml != '') {
 133     echo $renderer->log_display($loghtml);
 134 }
 135
 136 echo $OUTPUT->footer();