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   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   * Airnotifier message processor to send messages to the APNS provider: airnotfier. (https://github.com/dongsheng/airnotifier)
  19   *
  20   * @package    message_airnotifier
  21   * @category   external
  22   * @copyright  2012 Jerome Mouneyrac <jerome@moodle.com>
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   * @since Moodle 2.7
  25   */
  26  
  27  
  28  require_once($CFG->dirroot . '/message/output/lib.php');
  29  
  30  /**
  31   * Message processor class
  32   *
  33   * @package   message_airnotifier
  34   * @copyright 2012 Jerome Mouneyrac
  35   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  36   */
  37  class message_output_airnotifier extends message_output {
  38  
  39      /**
  40       * Processes the message and sends a notification via airnotifier
  41       *
  42       * @param stdClass $eventdata the event data submitted by the message sender plus $eventdata->savedmessageid
  43       * @return true if ok, false if error
  44       */
  45      public function send_message($eventdata) {
  46          global $CFG, $DB;
  47          require_once($CFG->libdir . '/filelib.php');
  48  
  49          if (!empty($CFG->noemailever)) {
  50              // Hidden setting for development sites, set in config.php if needed.
  51              debugging('$CFG->noemailever active, no airnotifier message sent.', DEBUG_MINIMAL);
  52              return true;
  53          }
  54  
  55          // Skip any messaging suspended and deleted users.
  56          if ($eventdata->userto->auth === 'nologin' or
  57              $eventdata->userto->suspended or
  58              $eventdata->userto->deleted) {
  59              return true;
  60          }
  61  
  62          // If username is empty we try to retrieve it, since it's required to generate the siteid.
  63          if (empty($eventdata->userto->username)) {
  64              $eventdata->userto->username = $DB->get_field('user', 'username', array('id' => $eventdata->userto->id));
  65          }
  66  
  67          // Site id, to map with Moodle Mobile stored sites.
  68          $siteid = md5($CFG->wwwroot . $eventdata->userto->username);
  69  
  70          // Airnotifier can handle custom requests using processors (that are Airnotifier plugins).
  71          // In the extra parameter we indicate which processor to use and also additional data to be handled by the processor.
  72          // Here we clone the eventdata object because will be deleting/adding attributes.
  73          $extra = clone $eventdata;
  74  
  75          // Delete attributes that may content private information.
  76          if (!empty($eventdata->userfrom)) {
  77              $extra->userfromid = $eventdata->userfrom->id;
  78              $extra->userfromfullname = fullname($eventdata->userfrom);
  79              unset($extra->userfrom);
  80          }
  81          $extra->usertoid = $eventdata->userto->id;
  82          unset($extra->userto);
  83  
  84          $extra->processor       = 'moodle';
  85          $extra->site            = $siteid;
  86          $extra->date            = (!empty($eventdata->timecreated)) ? $eventdata->timecreated : time();
  87          $extra->notification    = (!empty($eventdata->notification)) ? 1 : 0;
  88  
  89          // Site name.
  90          $site = get_site();
  91          $extra->sitefullname = clean_param(format_string($site->fullname), PARAM_NOTAGS);
  92          $extra->siteshortname = clean_param(format_string($site->shortname), PARAM_NOTAGS);
  93  
  94          // Clean HTML, push notifications must arrive clean.
  95          if (!empty($extra->smallmessage)) {
  96              $extra->smallmessage = clean_param($extra->smallmessage, PARAM_NOTAGS);
  97          }
  98          if (!empty($extra->fullmessage)) {
  99              $extra->fullmessage = clean_param($extra->fullmessage, PARAM_NOTAGS);
 100          }
 101          if (!empty($extra->fullmessagehtml)) {
 102              $extra->fullmessagehtml = clean_param($extra->fullmessagehtml, PARAM_NOTAGS);
 103          }
 104  
 105          // We are sending to message to all devices.
 106          $airnotifiermanager = new message_airnotifier_manager();
 107          $devicetokens = $airnotifiermanager->get_user_devices($CFG->airnotifiermobileappname, $eventdata->userto->id);
 108  
 109          foreach ($devicetokens as $devicetoken) {
 110  
 111              if (!$devicetoken->enable) {
 112                  continue;
 113              }
 114  
 115              // Sending the message to the device.
 116              $serverurl = $CFG->airnotifierurl . ':' . $CFG->airnotifierport . '/api/v2/push/';
 117              $header = array('Accept: application/json', 'X-AN-APP-NAME: ' . $CFG->airnotifierappname,
 118                  'X-AN-APP-KEY: ' . $CFG->airnotifieraccesskey);
 119              $curl = new curl;
 120              $curl->setHeader($header);
 121  
 122              $params = array(
 123                  'device'    => $devicetoken->platform,
 124                  'token'     => $devicetoken->pushid,
 125                  'extra'     => $extra
 126              );
 127  
 128              // JSON POST raw body request.
 129              $resp = $curl->post($serverurl, json_encode($params));
 130          }
 131  
 132          return true;
 133      }
 134  
 135      /**
 136       * Creates necessary fields in the messaging config form.
 137       *
 138       * @param array $preferences An array of user preferences
 139       */
 140      public function config_form($preferences) {
 141          global $CFG, $OUTPUT, $USER, $PAGE;
 142  
 143          $systemcontext = context_system::instance();
 144          if (!has_capability('message/airnotifier:managedevice', $systemcontext)) {
 145              return get_string('nopermissiontomanagedevices', 'message_airnotifier');
 146          }
 147  
 148          if (!$this->is_system_configured()) {
 149              return get_string('notconfigured', 'message_airnotifier');
 150          } else {
 151  
 152              $PAGE->requires->css('/message/output/airnotifier/style.css');
 153  
 154              $airnotifiermanager = new message_airnotifier_manager();
 155              $devicetokens = $airnotifiermanager->get_user_devices($CFG->airnotifiermobileappname, $USER->id);
 156  
 157              if (!empty($devicetokens)) {
 158                  $output = '';
 159  
 160                  foreach ($devicetokens as $devicetoken) {
 161  
 162                      if ($devicetoken->enable) {
 163                          $hideshowiconname = 't/hide';
 164                          $dimmed = '';
 165                      } else {
 166                          $hideshowiconname = 't/show';
 167                          $dimmed = 'dimmed_text';
 168                      }
 169  
 170                      $hideshowicon = $OUTPUT->pix_icon($hideshowiconname, get_string('showhide', 'message_airnotifier'));
 171                      $name = "{$devicetoken->name} {$devicetoken->model} {$devicetoken->platform} {$devicetoken->version}";
 172                      $hideurl = new moodle_url('message/output/airnotifier/action.php',
 173                                      array('hide' => !$devicetoken->enable, 'deviceid' => $devicetoken->id,
 174                                          'sesskey' => sesskey()));
 175  
 176                      $output .= html_writer::start_tag('li', array('id' => $devicetoken->id,
 177                                                                      'class' => 'airnotifierdevice ' . $dimmed)) . "\n";
 178                      $output .= html_writer::label($name, 'deviceid-' . $devicetoken->id, array('class' => 'devicelabel ')) . ' ' .
 179                          html_writer::link($hideurl, $hideshowicon, array('class' => 'hidedevice', 'alt' => 'show/hide')) . "\n";
 180                      $output .= html_writer::end_tag('li') . "\n";
 181                  }
 182  
 183                  // Include the AJAX script to automatically trigger the action.
 184                  $airnotifiermanager->include_device_ajax();
 185  
 186                  $output = html_writer::tag('ul', $output, array('id' => 'airnotifierdevices'));
 187              } else {
 188                  $output = get_string('nodevices', 'message_airnotifier');
 189              }
 190              return $output;
 191          }
 192      }
 193  
 194      /**
 195       * Parses the submitted form data and saves it into preferences array.
 196       *
 197       * @param stdClass $form preferences form class
 198       * @param array $preferences preferences array
 199       */
 200      public function process_form($form, &$preferences) {
 201          return true;
 202      }
 203  
 204      /**
 205       * Loads the config data from database to put on the form during initial form display
 206       *
 207       * @param array $preferences preferences array
 208       * @param int $userid the user id
 209       */
 210      public function load_data(&$preferences, $userid) {
 211          return true;
 212      }
 213  
 214      /**
 215       * Tests whether the airnotifier settings have been configured
 216       * @return boolean true if airnotifier is configured
 217       */
 218      public function is_system_configured() {
 219          $airnotifiermanager = new message_airnotifier_manager();
 220          return $airnotifiermanager->is_system_configured();
 221      }
 222  }
 223