/mod/chat/gui_header_js/jsupdate.php
PHP | 192 lines | 139 code | 27 blank | 26 comment | 30 complexity | 952fe69c55ead784bf2ad86c3afd8497 MD5 | raw file
Possible License(s): MIT, AGPL-3.0, MPL-2.0-no-copyleft-exception, LGPL-3.0, GPL-3.0, Apache-2.0, LGPL-2.1, BSD-3-Clause
- <?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('../../../config.php');
- require('../lib.php');
- $chatsid = required_param('chat_sid', PARAM_ALPHANUM);
- $chatlasttime = optional_param('chat_lasttime', 0, PARAM_INT);
- $chatlastrow = optional_param('chat_lastrow', 1, PARAM_INT);
- $url = new moodle_url('/mod/chat/gui_header_js/jsupdate.php', array('chat_sid' => $chatsid));
- if ($chatlasttime !== 0) {
- $url->param('chat_lasttime', $chatlasttime);
- }
- if ($chatlastrow !== 1) {
- $url->param('chat_lastrow', $chatlastrow);
- }
- $PAGE->set_url($url);
- if (!$chatuser = $DB->get_record('chat_users', array('sid' => $chatsid))) {
- print_error('notlogged', 'chat');
- }
- // Get the minimal course.
- if (!$course = $DB->get_record('course', array('id' => $chatuser->course))) {
- print_error('invalidcourseid');
- }
- // Get the user theme and enough info to be used in chat_format_message() which passes it along to.
- // No optimisation here, it would break again in future!
- if (!$user = $DB->get_record('user', array('id' => $chatuser->userid, 'deleted' => 0, 'suspended' => 0))) {
- print_error('invaliduser');
- }
- \core\session\manager::set_user($user);
- // Setup course, lang and theme.
- $PAGE->set_course($course);
- // Force deleting of timed out users if there is a silence in room or just entering.
- if ((time() - $chatlasttime) > $CFG->chat_old_ping) {
- // Must be done before chat_get_latest_message!
- chat_delete_old_users();
- }
- if ($message = chat_get_latest_message($chatuser->chatid, $chatuser->groupid)) {
- $chatnewlasttime = $message->timestamp;
- } else {
- $chatnewlasttime = 0;
- }
- if ($chatlasttime == 0) { // Display some previous messages.
- $chatlasttime = time() - $CFG->chat_old_ping; // TO DO - any better value?
- }
- $timenow = time();
- $params = array('groupid' => $chatuser->groupid, 'chatid' => $chatuser->chatid, 'lasttime' => $chatlasttime);
- $groupselect = $chatuser->groupid ? " AND (groupid=:groupid OR groupid=0) " : "";
- $messages = $DB->get_records_select("chat_messages_current",
- "chatid = :chatid AND timestamp > :lasttime $groupselect", $params,
- "timestamp ASC");
- if ($messages) {
- $num = count($messages);
- } else {
- $num = 0;
- }
- $chatnewrow = ($chatlastrow + $num) % 2;
- // No & in url, does not work in header!
- $baseurl = "{$CFG->wwwroot}/mod/chat/gui_header_js/jsupdate.php?";
- $refreshurl = $baseurl . "chat_sid=$chatsid&chat_lasttime=$chatnewlasttime&chat_lastrow=$chatnewrow";
- $refreshurlamp = $baseurl . "chat_sid=$chatsid&chat_lasttime=$chatnewlasttime&chat_lastrow=$chatnewrow";
- header('Expires: Sun, 28 Dec 1997 09:32:45 GMT');
- header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');
- header('Cache-Control: no-cache, must-revalidate');
- header('Pragma: no-cache');
- header('Content-Type: text/html; charset=utf-8');
- header("Refresh: $CFG->chat_refresh_room; url=$refreshurl");
- // Use ob to be able to send Content-Length headers.
- // Needed for Keep-Alive to work.
- ob_start();
- ?>
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html>
- <head>
- <meta http-equiv="content-type" content="text/html; charset=utf-8" />
- <script type="text/javascript">
- //<![CDATA[
- if (parent.msg && parent.msg.document.getElementById("msgStarted") == null) {
- parent.msg.document.close();
- parent.msg.document.open("text/html","replace");
- parent.msg.document.write("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">");
- parent.msg.document.write("<html><head>");
- parent.msg.document.write("<meta http-equiv=\"content-type\" content=\"text/html; charset=utf-8\" />");
- parent.msg.document.write("<base target=\"_blank\" />");
- parent.msg.document.write("<\/head><body class=\"mod-chat-gui_header_js course-<?php echo $chatuser->course ?>\" id=\"mod-chat-gui_header_js-jsupdate\"><div style=\"display: none\" id=\"msgStarted\"> <\/div>");
- }
- <?php
- $beep = false;
- $refreshusers = false;
- $us = array ();
- if (($chatlasttime != $chatnewlasttime) and $messages) {
- foreach ($messages as $message) {
- $chatlastrow = ($chatlastrow + 1) % 2;
- $formatmessage = chat_format_message($message, $chatuser->course, $USER, $chatlastrow);
- if ($formatmessage->beep) {
- $beep = true;
- }
- if ($formatmessage->refreshusers) {
- $refreshusers = true;
- }
- $us[$message->userid] = $timenow - $message->timestamp;
- echo "if(parent.msg)";
- echo "parent.msg.document.write('".addslashes_js($formatmessage->html)."\\n');\n";
- }
- }
- $chatuser->lastping = time();
- $DB->set_field('chat_users', 'lastping', $chatuser->lastping, array('id' => $chatuser->id));
- if ($refreshusers) {
- ?>
- var link = parent.users.document.getElementById('refreshLink');
- if (link != null) {
- parent.users.location.href = link.href;
- }
- <?php
- } else {
- foreach ($us as $uid => $lastping) {
- $min = (int) ($lastping / 60);
- $sec = $lastping - ($min * 60);
- $min = $min < 10 ? '0'.$min : $min;
- $sec = $sec < 10 ? '0'.$sec : $sec;
- $idle = $min.':'.$sec;
- echo "if (parent.users && parent.users.document.getElementById('uidle{$uid}') != null) {".
- "parent.users.document.getElementById('uidle{$uid}').innerHTML = '$idle';}\n";
- }
- }
- ?>
- if (parent.input) {
- var autoscroll = parent.input.document.getElementById('auto');
- if (parent.msg && autoscroll && autoscroll.checked) {
- parent.msg.scroll(1,5000000);
- }
- }
- //]]>
- </script>
- </head>
- <body>
- <?php
- if ($beep) {
- echo '<script> (function() {';
- echo 'var audioElement = document.createElement("audio");';
- echo 'audioElement.setAttribute("src", "../beep.mp3");';
- echo 'audioElement.play(); })();';
- echo '</script>';
- }
- ?>
- <a href="<?php echo $refreshurlamp ?>" name="refreshLink">Refresh link</a>
- </body>
- </html>
- <?php
- // Support HTTP Keep-Alive.
- header("Content-Length: " . ob_get_length() );
- ob_end_flush();
- exit;