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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   * This file is part of the User section Moodle
  19   *
  20   * @copyright 1999 Martin Dougiamas  http://dougiamas.com
  21   * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  22   * @package core_user
  23   */
  24  
  25  require_once('../config.php');
  26  require_once($CFG->dirroot.'/message/lib.php');
  27  
  28  $id = required_param('id', PARAM_INT);
  29  $messagebody = optional_param('messagebody', '', PARAM_CLEANHTML);
  30  $send = optional_param('send', '', PARAM_BOOL);
  31  $preview = optional_param('preview', '', PARAM_BOOL);
  32  $edit = optional_param('edit', '', PARAM_BOOL);
  33  $returnto = optional_param('returnto', '', PARAM_LOCALURL);
  34  $format = optional_param('format', FORMAT_MOODLE, PARAM_INT);
  35  $deluser = optional_param('deluser', 0, PARAM_INT);
  36  
  37  $url = new moodle_url('/user/messageselect.php', array('id' => $id));
  38  if ($messagebody !== '') {
  39      $url->param('messagebody', $messagebody);
  40  }
  41  if ($send !== '') {
  42      $url->param('send', $send);
  43  }
  44  if ($preview !== '') {
  45      $url->param('preview', $preview);
  46  }
  47  if ($edit !== '') {
  48      $url->param('edit', $edit);
  49  }
  50  if ($returnto !== '') {
  51      $url->param('returnto', $returnto);
  52  }
  53  if ($format !== FORMAT_MOODLE) {
  54      $url->param('format', $format);
  55  }
  56  if ($deluser !== 0) {
  57      $url->param('deluser', $deluser);
  58  }
  59  $PAGE->set_url($url);
  60  
  61  if (!$course = $DB->get_record('course', array('id' => $id))) {
  62      print_error('invalidcourseid');
  63  }
  64  
  65  require_login($course);
  66  
  67  $coursecontext = context_course::instance($id);   // Course context.
  68  $systemcontext = context_system::instance();   // SYSTEM context.
  69  require_capability('moodle/course:bulkmessaging', $coursecontext);
  70  
  71  if (empty($SESSION->emailto)) {
  72      $SESSION->emailto = array();
  73  }
  74  if (!array_key_exists($id, $SESSION->emailto)) {
  75      $SESSION->emailto[$id] = array();
  76  }
  77  
  78  if ($deluser) {
  79      if (array_key_exists($id, $SESSION->emailto) && array_key_exists($deluser, $SESSION->emailto[$id])) {
  80          unset($SESSION->emailto[$id][$deluser]);
  81      }
  82  }
  83  
  84  if (empty($SESSION->emailselect[$id]) || $messagebody) {
  85      $SESSION->emailselect[$id] = array('messagebody' => $messagebody);
  86  }
  87  
  88  $messagebody = $SESSION->emailselect[$id]['messagebody'];
  89  
  90  $count = 0;
  91  
  92  if ($data = data_submitted()) {
  93      require_sesskey();
  94      $namefields = get_all_user_name_fields(true);
  95      foreach ($data as $k => $v) {
  96          if (preg_match('/^(user|teacher)(\d+)$/', $k, $m)) {
  97              if (!array_key_exists($m[2], $SESSION->emailto[$id])) {
  98                  if ($user = $DB->get_record_select('user', "id = ?", array($m[2]), 'id, '.
  99                          $namefields . ', idnumber, email, mailformat, lastaccess, lang, '.
 100                          'maildisplay, auth, suspended, deleted, emailstop, username')) {
 101                      $SESSION->emailto[$id][$m[2]] = $user;
 102                      $count++;
 103                  }
 104              }
 105          }
 106      }
 107  }
 108  
 109  if ($course->id == SITEID) {
 110      $strtitle = get_string('sitemessage');
 111      $PAGE->set_pagelayout('admin');
 112  } else {
 113      $strtitle = get_string('coursemessage');
 114      $PAGE->set_pagelayout('incourse');
 115  }
 116  
 117  $link = null;
 118  if (has_capability('moodle/course:viewparticipants', $coursecontext) ||
 119      has_capability('moodle/site:viewparticipants', $systemcontext)) {
 120      $link = new moodle_url("/user/index.php", array('id' => $course->id));
 121  }
 122  $PAGE->navbar->add(get_string('participants'), $link);
 123  $PAGE->navbar->add($strtitle);
 124  $PAGE->set_title($strtitle);
 125  $PAGE->set_heading($strtitle);
 126  echo $OUTPUT->header();
 127  // If messaging is disabled on site, we can still allow users with capabilities to send emails instead.
 128  if (empty($CFG->messaging)) {
 129      echo $OUTPUT->notification(get_string('messagingdisabled', 'message'));
 130  }
 131  
 132  if ($count) {
 133      if ($count == 1) {
 134          $heading = get_string('addedrecip', 'moodle', $count);
 135      } else {
 136          $heading = get_string('addedrecips', 'moodle', $count);
 137      }
 138      echo $OUTPUT->heading($heading);
 139  }
 140  
 141  if (!empty($messagebody) && !$edit && !$deluser && ($preview || $send)) {
 142      require_sesskey();
 143      if (count($SESSION->emailto[$id])) {
 144          if (!empty($preview)) {
 145              echo '<form method="post" action="messageselect.php" style="margin: 0 20px;">
 146  <input type="hidden" name="returnto" value="'.s($returnto).'" />
 147  <input type="hidden" name="id" value="'.$id.'" />
 148  <input type="hidden" name="format" value="'.$format.'" />
 149  <input type="hidden" name="sesskey" value="' . sesskey() . '" />
 150  ';
 151              echo "<h3>".get_string('previewhtml')."</h3>";
 152              echo "<div class=\"messagepreview\">\n".format_text($messagebody, $format)."\n</div>\n";
 153              echo '<p align="center"><input type="submit" name="send" value="'.get_string('sendmessage', 'message').'" />'."\n";
 154              echo '<input type="submit" name="edit" value="'.get_string('update').'" /></p>';
 155              echo "\n</form>";
 156          } else if (!empty($send)) {
 157              $fails = array();
 158              foreach ($SESSION->emailto[$id] as $user) {
 159                  if (!message_post_message($USER, $user, $messagebody, $format)) {
 160                      $user->fullname = fullname($user);
 161                      $fails[] = get_string('messagedselecteduserfailed', 'moodle', $user);
 162                  };
 163              }
 164              if (empty($fails)) {
 165                  echo $OUTPUT->heading(get_string('messagedselectedusers'));
 166                  unset($SESSION->emailto[$id]);
 167                  unset($SESSION->emailselect[$id]);
 168              } else {
 169                  echo $OUTPUT->heading(get_string('messagedselectedcountusersfailed', 'moodle', count($fails)));
 170                  echo '<ul>';
 171                  foreach ($fails as $f) {
 172                          echo '<li>', $f, '</li>';
 173                  }
 174                  echo '</ul>';
 175              }
 176              echo '<p align="center"><a href="index.php?id='.$id.'">'.get_string('backtoparticipants').'</a></p>';
 177          }
 178          echo $OUTPUT->footer();
 179          exit;
 180      } else {
 181          echo $OUTPUT->notification(get_string('nousersyet'));
 182      }
 183  }
 184  
 185  echo '<p align="center"><a href="'.$returnto.'">'.get_string("keepsearching").'</a>'.
 186      ((count($SESSION->emailto[$id])) ? ', '.get_string('usemessageform') : '').'</p>';
 187  
 188  if ((!empty($send) || !empty($preview) || !empty($edit)) && (empty($messagebody))) {
 189      echo $OUTPUT->notification(get_string('allfieldsrequired'));
 190  }
 191  
 192  if (count($SESSION->emailto[$id])) {
 193      require_sesskey();
 194      require ("message.html");
 195  }
 196  
 197  $PAGE->requires->yui_module('moodle-core-formchangechecker',
 198          'M.core_formchangechecker.init',
 199          array(array(
 200              'formid' => 'theform'
 201          ))
 202  );
 203  $PAGE->requires->string_for_js('changesmadereallygoaway', 'moodle');
 204  
 205  echo $OUTPUT->footer();