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Differences Between: [Versions 39 and 401]

   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   * Optionally award a badge and redirect to the my badges page.
  19   *
  20   * @package    core_badges
  21   * @copyright  2019 Damyon Wiese
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  require_once(__DIR__ . '/../config.php');
  26  require_once($CFG->libdir . '/badgeslib.php');
  27  
  28  require_login();
  29  
  30  $userbackpack = badges_get_user_backpack();
  31  if (badges_open_badges_backpack_api($userbackpack->id) != OPEN_BADGES_V2) {
  32      throw new coding_exception('No backpacks support Open Badges V2.');
  33  }
  34  
  35  $id = required_param('hash', PARAM_ALPHANUM);
  36  
  37  $PAGE->set_url('/badges/backpack-add.php', array('hash' => $id));
  38  $PAGE->set_context(context_system::instance());
  39  $output = $PAGE->get_renderer('core', 'badges');
  40  
  41  $issuedbadge = new \core_badges\output\issued_badge($id);
  42  if (!empty($issuedbadge->recipient->id)) {
  43      // The flow for issuing a badge is:
  44      // * Create issuer
  45      // * Create badge
  46      // * Create assertion (Award the badge!)
  47  
  48      // With the introduction OBv2.1 and MDL-65959 to allow cross region Badgr imports the above (old) procedure will
  49      // only be completely performed if both the site and user backpacks conform to the same apiversion.
  50      // Else we will attempt at pushing the assertion to the user's backpack. In this case, the id set against the assertion
  51      // has to be a publicly accessible resource.
  52  
  53      // Get the backpack.
  54      $badgeid = $issuedbadge->badgeid;
  55      $badge = new badge($badgeid);
  56      $backpack = $DB->get_record('badge_backpack', array('userid' => $USER->id));
  57      $userbackpack = badges_get_site_backpack($backpack->externalbackpackid, $USER->id);
  58      $assertion = new core_badges_assertion($id, OPEN_BADGES_V2);
  59      $assertiondata = $assertion->get_badge_assertion(false, false);
  60      $assertionid = $assertion->get_assertion_hash();
  61      $assertionentityid = $assertiondata['id'];
  62      $badgeadded = false;
  63      if (badges_open_badges_backpack_api() == OPEN_BADGES_V2) {
  64          $sitebackpack = badges_get_site_primary_backpack();
  65          $api = new \core_badges\backpack_api($sitebackpack);
  66          $response = $api->authenticate();
  67  
  68          // A numeric response indicates a valid successful authentication. Else an error object will be returned.
  69          if (is_numeric($response)) {
  70              // Create issuer.
  71              $issuer = $assertion->get_issuer();
  72              if (!($issuerentityid = badges_external_get_mapping($sitebackpack->id, OPEN_BADGES_V2_TYPE_ISSUER, $issuer['email']))) {
  73                  $response = $api->put_issuer($issuer);
  74                  if (!$response) {
  75                      throw new moodle_exception('invalidrequest', 'error');
  76                  }
  77                  $issuerentityid = $response->id;
  78                  badges_external_create_mapping($sitebackpack->id, OPEN_BADGES_V2_TYPE_ISSUER, $issuer['email'],
  79                      $issuerentityid);
  80              }
  81              // Create badge.
  82              $badge = $assertion->get_badge_class(false);
  83              $badgeid = $assertion->get_badge_id();
  84              if (!($badgeentityid = badges_external_get_mapping($sitebackpack->id, OPEN_BADGES_V2_TYPE_BADGE, $badgeid))) {
  85                  $response = $api->put_badgeclass($issuerentityid, $badge);
  86                  if (!$response) {
  87                      throw new moodle_exception('invalidrequest', 'error');
  88                  }
  89                  $badgeentityid = $response->id;
  90                  badges_external_create_mapping($sitebackpack->id, OPEN_BADGES_V2_TYPE_BADGE, $badgeid,
  91                      $badgeentityid);
  92              }
  93  
  94              // Create assertion (Award the badge!).
  95              $assertionentityid = badges_external_get_mapping(
  96                  $sitebackpack->id,
  97                  OPEN_BADGES_V2_TYPE_ASSERTION,
  98                  $assertionid
  99              );
 100  
 101              if ($assertionentityid && strpos($sitebackpack->backpackapiurl, 'badgr')) {
 102                  $assertionentityid = badges_generate_badgr_open_url(
 103                      $sitebackpack,
 104                      OPEN_BADGES_V2_TYPE_ASSERTION,
 105                      $assertionentityid
 106                  );
 107              }
 108  
 109              // Create an assertion for the recipient in the issuer's account.
 110              if (!$assertionentityid) {
 111                  $response = $api->put_badgeclass_assertion($badgeentityid, $assertiondata);
 112                  if (!$response) {
 113                      throw new moodle_exception('invalidrequest', 'error');
 114                  }
 115                  $assertionentityid = badges_generate_badgr_open_url($sitebackpack, OPEN_BADGES_V2_TYPE_ASSERTION, $response->id);
 116                  $badgeadded = true;
 117                  badges_external_create_mapping($sitebackpack->id, OPEN_BADGES_V2_TYPE_ASSERTION, $assertionid,
 118                      $response->id);
 119              } else {
 120                  // An assertion already exists. Make sure it's up to date.
 121                  $internalid = badges_external_get_mapping(
 122                      $sitebackpack->id,
 123                      OPEN_BADGES_V2_TYPE_ASSERTION,
 124                      $assertionid,
 125                      'externalid'
 126                  );
 127                  $response = $api->update_assertion($internalid, $assertiondata);
 128                  if (!$response) {
 129                      throw new moodle_exception('invalidrequest', 'error');
 130                  }
 131              }
 132          }
 133      }
 134  
 135      // Now award/upload the badge to the user's account.
 136      // - If a user and site backpack have the same provider we can skip this as Badgr automatically maps recipients
 137      // based on email address.
 138      // - This is only needed when the backpacks are from different regions.
 139      if ($assertionentityid && !badges_external_get_mapping($userbackpack->id, OPEN_BADGES_V2_TYPE_ASSERTION, $assertionid)) {
 140          $userapi = new \core_badges\backpack_api($userbackpack, $backpack);
 141          $userapi->authenticate();
 142          $response = $userapi->import_badge_assertion($assertionentityid);
 143          if (!$response) {
 144              throw new moodle_exception('invalidrequest', 'error');
 145          }
 146          $assertionentityid = $response->id;
 147          $badgeadded = true;
 148          badges_external_create_mapping($userbackpack->id, OPEN_BADGES_V2_TYPE_ASSERTION, $assertionid,
 149              $assertionentityid);
 150      }
 151  
 152      $response = $badgeadded ? ['success' => 'addedtobackpack'] : ['warning' => 'existsinbackpack'];
 153      redirect(new moodle_url('/badges/mybadges.php', $response));
 154  } else {
 155      redirect(new moodle_url('/badges/mybadges.php'));
 156  }