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   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              $restore->execute();
 112              // Get HTML from logger.
 113              if ($CFG->debugdisplay) {
 114                  $loghtml = $logger->get_html();
 115              }
 116              // Hide this section because we are now going to make the page show 'finished'.
 117              echo html_writer::end_div();
 118              echo html_writer::script('document.getElementById("executionprogress").style.display = "none";');
 119          } catch(Exception $e) {
 120              $restore->cleanup();
 121              throw $e;
 122          }
 123      } else {
 124          $restore->save_controller();
 125      }
 126  }
 127  
 128  echo $renderer->progress_bar($restore->get_progress_bar());
 129  echo $restore->display($renderer);
 130  $restore->destroy();
 131  unset($restore);
 132  
 133  // Display log data if there was any.
 134  if ($loghtml != '') {
 135      echo $renderer->log_display($loghtml);
 136  }
 137  
 138  echo $OUTPUT->footer();