moodle/mod/chat/gui_header_js/insert.php

<?php  // $Id$

    include('../../../config.php');
    include('../lib.php');

    $chat_sid     = required_param('chat_sid', PARAM_ALPHANUM);
    $chat_message = required_param('chat_message', PARAM_RAW);

    if (!$chatuser = $DB->get_record('chat_users', array('sid'=>$chat_sid))) {
        print_error('notlogged', 'chat');
    }

    if (!$chat = $DB->get_record('chat', array('id'=>$chatuser->chatid))) {
        print_error('nochat', 'chat');
    }

    if (!$course = $DB->get_record('course', array('id'=>$chat->course))) {
        print_error('invalidcourseid');
    }

    if (!$cm = get_coursemodule_from_instance('chat', $chat->id, $course->id)) {
        print_error('invalidcoursemodule');
    }

    require_login($course->id, false, $cm);

    if (isguest()) {
        print_error('noguests');
    }

    session_get_instance()->write_close();

/// Delete old users now

    chat_delete_old_users();

/// Clean up the message

    $chat_message = clean_text($chat_message, FORMAT_MOODLE);  // Strip bad tags

/// Add the message to the database

    if (!empty($chat_message)) {

        $message = new object();
        $message->chatid = $chatuser->chatid;
        $message->userid = $chatuser->userid;
        $message->groupid = $chatuser->groupid;
        $message->message = $chat_message;
        $message->timestamp = time();

        $DB->insert_record('chat_messages', $message);
        $DB->insert_record('chat_messages_current', $message);

        $chatuser->lastmessageping = time() - 2;
        $DB->update_record('chat_users', $chatuser);

        if ($cm = get_coursemodule_from_instance('chat', $chat->id, $course->id)) {
            add_to_log($course->id, 'chat', 'talk', "view.php?id=$cm->id", $chat->id, $cm->id);
        }
    }

    if ($chatuser->version == 'header_js') {
        /// force msg referesh ASAP
        echo $PAGE->requires->js('mod/chat/gui_header_js/chat_gui_header.js')->asap();
        if ($CFG->chat_normal_updatemode != 'jsupdated') {  // See bug MDL-6791
            echo $PAGE->requires->js_function_call('insert_redirect')->asap();;
        }
        echo $PAGE->requires->js_function_call('parent.input.enableForm')->asap();
    }

    redirect('../empty.php');
?>