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Developer Documentation

See Release Notes

  • Bug fixes for general core bugs in 3.10.x will end 8 November 2021 (12 months).
  • Bug fixes for security issues in 3.10.x will end 9 May 2022 (18 months).
  • PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

define('NO_MOODLE_COOKIES', true); // Session not used here.

require_once('../../../config.php');
require_once($CFG->dirroot.'/mod/chat/lib.php');

$chatsid   = required_param('chat_sid', PARAM_ALPHANUM);
$beep       = optional_param('beep', 0, PARAM_INT);  // Beep target.

$PAGE->set_url('/mod/chat/gui_header_js/users.php', array('chat_sid' => $chatsid));
$PAGE->set_popup_notification_allowed(false);

if (!$chatuser = $DB->get_record('chat_users', array('sid' => $chatsid))) {
< print_error('notlogged', 'chat');
> throw new \moodle_exception('notlogged', 'chat');
} // Get the minimal course. if (!$course = $DB->get_record('course', array('id' => $chatuser->course))) {
< print_error('invalidcourseid');
> throw new \moodle_exception('invalidcourseid');
} // Get the user theme and enough info to be used in chat_format_message() which passes it along to. // No optimisation here, it would break again in future! if (!$user = $DB->get_record('user', array('id' => $chatuser->userid, 'deleted' => 0, 'suspended' => 0))) {
< print_error('invaliduser');
> throw new \moodle_exception('invaliduser');
} \core\session\manager::set_user($user); $PAGE->set_pagelayout('embedded'); // Setup course, lang and theme. $PAGE->set_course($course); $courseid = $chatuser->course; if (!$cm = get_coursemodule_from_instance('chat', $chatuser->chatid, $courseid)) {
< print_error('invalidcoursemodule');
> throw new \moodle_exception('invalidcoursemodule');
} if ($beep) { chat_send_chatmessage($chatuser, "beep $beep", 0, $cm); $chatuser->lastmessageping = time(); // A beep is a ping. } $chatuser->lastping = time(); $DB->set_field('chat_users', 'lastping', $chatuser->lastping, array('id' => $chatuser->id)); $refreshurl = "users.php?chat_sid=$chatsid"; // Get list of users. if (!$chatusers = chat_get_users($chatuser->chatid, $chatuser->groupid, $cm->groupingid)) {
< print_error('errornousers', 'chat');
> throw new \moodle_exception('errornousers', 'chat');
} $uidles = Array(); foreach ($chatusers as $chatuser) { $uidles[] = $chatuser->id; } $module = array( 'name' => 'mod_chat_header', 'fullpath' => '/mod/chat/gui_header_js/module.js', 'requires' => array('node') ); $PAGE->requires->js_init_call('M.mod_chat_header.init_users', array($uidles), false, $module); // Print user panel body. $timenow = time(); $stridle = get_string('idle', 'chat'); $strbeep = get_string('beep', 'chat'); $table = new html_table(); $table->width = '100%'; $table->data = array(); foreach ($chatusers as $chatuser) { $lastping = $timenow - $chatuser->lastmessageping; $min = (int) ($lastping / 60); $sec = $lastping - ($min * 60); $min = $min < 10 ? '0'.$min : $min; $sec = $sec < 10 ? '0'.$sec : $sec; $idle = $min.':'.$sec; $row = array(); $row[0] = $OUTPUT->user_picture($chatuser, array('courseid' => $courseid, 'popup' => true)); $row[1] = html_writer::start_tag('p'); $row[1] .= html_writer::start_tag('font', array('size' => '1')); $row[1] .= fullname($chatuser).'<br />'; $row[1] .= html_writer::tag('span', $stridle . html_writer::tag('span', $idle, array('name' => 'uidles', 'id' => 'uidle'.$chatuser->id)), array('class' => 'dimmed_text')) . ' '; $row[1] .= html_writer::tag('a', $strbeep, array('href' => new moodle_url('/mod/chat/gui_header_js/users.php', array('chat_sid' => $chatsid, 'beep' => $chatuser->id)))); $row[1] .= html_writer::end_tag('font'); $row[1] .= html_writer::end_tag('p'); $table->data[] = $row; } ob_start(); echo $OUTPUT->header(); echo html_writer::tag('div', html_writer::tag('a', get_string('refresh'), array('href' => $refreshurl, 'id' => 'refreshLink')), array('style' => 'display:none')); echo html_writer::table($table); echo $OUTPUT->footer(); // Support HTTP Keep-Alive by printing Content-Length // // If the user pane is refreshing often, using keepalives // is lighter on the server and faster for most clients. // // Apache is normally configured to have a 15s timeout on // keepalives, so let's observe that. Unfortunately, we cannot // autodetect the keepalive timeout. // // Using keepalives when the refresh is longer than the timeout // wastes server resources keeping an apache child around on a // connection that will timeout. So we don't. if ($CFG->chat_refresh_userlist < 15) { header("Content-Length: " . ob_get_length() ); ob_end_flush(); } exit; // No further output.