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Differences Between: [Versions 39 and 311] [Versions 39 and 400] [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * This script is used to configure and execute the restore proccess.
  19   *
  20   * @package    core
  21   * @subpackage backup
  22   * @copyright  Moodle
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  
  26  define('NO_OUTPUT_BUFFERING', true);
  27  
  28  require_once('../config.php');
  29  require_once($CFG->dirroot . '/backup/util/includes/restore_includes.php');
  30  
  31  // Restore of large courses requires extra memory. Use the amount configured
  32  // in admin settings.
  33  raise_memory_limit(MEMORY_EXTRA);
  34  
  35  $contextid   = required_param('contextid', PARAM_INT);
  36  $stage       = optional_param('stage', restore_ui::STAGE_CONFIRM, PARAM_INT);
  37  $cancel      = optional_param('cancel', '', PARAM_ALPHA);
  38  
  39  // Determine if we are performing realtime for asynchronous backups.
  40  $backupmode = backup::MODE_GENERAL;
  41  if (async_helper::is_async_enabled()) {
  42      $backupmode = backup::MODE_ASYNC;
  43  }
  44  
  45  list($context, $course, $cm) = get_context_info_array($contextid);
  46  
  47  navigation_node::override_active_url(new moodle_url('/backup/restorefile.php', array('contextid'=>$contextid)));
  48  $PAGE->set_url(new moodle_url('/backup/restore.php', array('contextid'=>$contextid)));
  49  $PAGE->set_context($context);
  50  $PAGE->set_pagelayout('admin');
  51  
  52  require_login($course, null, $cm);
  53  require_capability('moodle/restore:restorecourse', $context);
  54  
  55  if (is_null($course)) {
  56      $coursefullname = $SITE->fullname;
  57      $courseshortname = $SITE->shortname;
  58      $courseurl = new moodle_url('/');
  59  } else {
  60      $coursefullname = $course->fullname;
  61      $courseshortname = $course->shortname;
  62      $courseurl = course_get_url($course->id);
  63  }
  64  
  65  // Show page header.
  66  $PAGE->set_title($courseshortname . ': ' . get_string('restore'));
  67  $PAGE->set_heading($coursefullname);
  68  
  69  $renderer = $PAGE->get_renderer('core','backup');
  70  if (empty($cancel)) {
  71      // Do not print the header if user cancelled the process, as we are going to redirect the user.
  72      echo $OUTPUT->header();
  73  }
  74  
  75  // Prepare a progress bar which can display optionally during long-running
  76  // operations while setting up the UI.
  77  $slowprogress = new \core\progress\display_if_slow(get_string('preparingui', 'backup'));
  78  
  79  // Overall, allow 10 units of progress.
  80  $slowprogress->start_progress('', 10);
  81  
  82  // This progress section counts for loading the restore controller.
  83  $slowprogress->start_progress('', 1, 1);
  84  
  85  if ($stage & restore_ui::STAGE_CONFIRM + restore_ui::STAGE_DESTINATION) {
  86      $restore = restore_ui::engage_independent_stage($stage, $contextid);
  87  } else {
  88      $restoreid = optional_param('restore', false, PARAM_ALPHANUM);
  89      $rc = restore_ui::load_controller($restoreid);
  90      if (!$rc) {
  91          $restore = restore_ui::engage_independent_stage($stage/2, $contextid);
  92          if ($restore->process()) {
  93              $rc = new restore_controller($restore->get_filepath(), $restore->get_course_id(), backup::INTERACTIVE_YES,
  94                      $backupmode, $USER->id, $restore->get_target(), null, backup::RELEASESESSION_YES);
  95          }
  96      }
  97      if ($rc) {
  98          // check if the format conversion must happen first
  99          if ($rc->get_status() == backup::STATUS_REQUIRE_CONV) {
 100              $rc->convert();
 101          }
 102  
 103          $restore = new restore_ui($rc, array('contextid'=>$context->id));
 104      }
 105  }
 106  
 107  // End progress section for loading restore controller.
 108  $slowprogress->end_progress();
 109  
 110  // This progress section is for the 'process' function below.
 111  $slowprogress->start_progress('', 1, 9);
 112  
 113  // Depending on the code branch above, $restore may be a restore_ui or it may
 114  // be a restore_ui_independent_stage. Either way, this function exists.
 115  $restore->set_progress_reporter($slowprogress);
 116  $outcome = $restore->process();
 117  
 118  if (!$restore->is_independent() && $restore->enforce_changed_dependencies()) {
 119      debugging('Your settings have been altered due to unmet dependencies', DEBUG_DEVELOPER);
 120  }
 121  
 122  $loghtml = '';
 123  // Finish the 'process' progress reporting section, and the overall count.
 124  $slowprogress->end_progress();
 125  $slowprogress->end_progress();
 126  
 127  if (!$restore->is_independent()) {
 128      // Use a temporary (disappearing) progress bar to show the precheck progress if any.
 129      $precheckprogress = new \core\progress\display_if_slow(get_string('preparingdata', 'backup'));
 130      $restore->get_controller()->set_progress($precheckprogress);
 131      if ($restore->get_stage() == restore_ui::STAGE_PROCESS && !$restore->requires_substage() && $backupmode != backup::MODE_ASYNC) {
 132          try {
 133              // Div used to hide the 'progress' step once the page gets onto 'finished'.
 134              echo html_writer::start_div('', array('id' => 'executionprogress'));
 135              // Show the current restore state (header with bolded item).
 136              echo $renderer->progress_bar($restore->get_progress_bar());
 137              // Start displaying the actual progress bar percentage.
 138              $restore->get_controller()->set_progress(new \core\progress\display());
 139              // Prepare logger.
 140              $logger = new core_backup_html_logger($CFG->debugdeveloper ? backup::LOG_DEBUG : backup::LOG_INFO);
 141              $restore->get_controller()->add_logger($logger);
 142              // Do actual restore.
 143              $restore->execute();
 144              // Get HTML from logger.
 145              if ($CFG->debugdisplay) {
 146                  $loghtml = $logger->get_html();
 147              }
 148              // Hide this section because we are now going to make the page show 'finished'.
 149              echo html_writer::end_div();
 150              echo html_writer::script('document.getElementById("executionprogress").style.display = "none";');
 151          } catch(Exception $e) {
 152              $restore->cleanup();
 153              throw $e;
 154          }
 155      } else {
 156          $restore->save_controller();
 157      }
 158  }
 159  
 160  echo $renderer->progress_bar($restore->get_progress_bar());
 161  
 162  if ($restore->get_stage() != restore_ui::STAGE_PROCESS) {
 163      echo $restore->display($renderer);
 164  } else if ($restore->get_stage() == restore_ui::STAGE_PROCESS && $restore->requires_substage()) {
 165      echo $restore->display($renderer);
 166  } else if ($restore->get_stage() == restore_ui::STAGE_PROCESS
 167          && !$restore->requires_substage()
 168          && $backupmode == backup::MODE_ASYNC) {
 169      // Asynchronous restore.
 170      // Create adhoc task for restore.
 171      $restoreid = $restore->get_restoreid();
 172      $asynctask = new \core\task\asynchronous_restore_task();
 173      $asynctask->set_blocking(false);
 174      $asynctask->set_custom_data(array('backupid' => $restoreid));
 175      \core\task\manager::queue_adhoc_task($asynctask);
 176  
 177      // Add ajax progress bar and initiate ajax via a template.
 178      $restoreurl = new moodle_url('/backup/restorefile.php', array('contextid' => $contextid));
 179      $progresssetup = array(
 180              'backupid' => $restoreid,
 181              'contextid' => $contextid,
 182              'courseurl' => $courseurl->out(),
 183              'restoreurl' => $restoreurl->out()
 184      );
 185      echo $renderer->render_from_template('core/async_backup_status', $progresssetup);
 186  }
 187  
 188  $restore->destroy();
 189  unset($restore);
 190  
 191  // Display log data if there was any.
 192  if ($loghtml != '') {
 193      echo $renderer->log_display($loghtml);
 194  }
 195  
 196  echo $OUTPUT->footer();