index.php

<?php
/***************************************************************************
 * index.php
 * -------------------------------------------------------------------------
 * Author: Matthew Davidson
 * Date: 6/07/2016
 * Revision: 1.0.2
 ***************************************************************************/

if (!isset($CFG)) {
    include_once('config.php');
}

header("Cache-Control: no-cache, no-store, must-revalidate"); // HTTP 1.1.
header("Pragma: no-cache"); // HTTP 1.0.
header("Expires: 0");

if (isset($CFG->downtime) && $CFG->downtime === true && !strstr($CFG->safeip, ',' . get_ip_address() . ',')) {
    include($CFG->dirroot . $CFG->alternatepage);
} else {
    include_once($CFG->dirroot . '/lib/header.php');

    // Get User info
    load_user_cookie();
    update_user_cookie();

    $directory = $CFG->directory == '' ? 'root' : $CFG->directory;
    setcookie('directory', $directory, get_timestamp() + $CFG->cookietimeout, '/');
    $_SESSION['directory'] = $directory;

    unset($_COOKIE["pageid"]);
    unset($_SESSION['pageid']);
    $pageid = get_pageid();

    // Get Page info
    if (!$currentpage = get_db_row("SELECT * FROM pages WHERE pageid='$pageid'")) {
        header('Location: ' . $CFG->wwwroot);
        die();
    }

    setcookie('pageid', $pageid, get_timestamp() + $CFG->cookietimeout, '/');
    $_SESSION['pageid'] = $pageid;

    $PAGE->title   = $CFG->sitename . " - " . $currentpage["name"]; // Title of page
    $PAGE->name   = $currentpage["name"]; // Title of page
    $PAGE->description = $currentpage["description"]; // Description of page
    $PAGE->themeid = get_page_themeid($pageid);

    //Use this page only to keep session and cookies refreshed (during forms)
    if (!empty($_GET['keepalive'])) {
        header("Refresh:30");
        die();
    }

    //Start Page
    include('header.html');

    //Cache roles
    $ROLES = load_roles();

    //Check for upgrades or uninstalled components
    upgrade_check();

    if (is_logged_in()) {
        $params = ["timeout" => 14599]; // Javascript that checks for valid login every x seconds.
        ajaxapi([
            "id" => "login_check",
            "url" => "/ajax/site_ajax.php",
            "data" => ["action" => "login_check", "pageid" => $pageid, "check" => true],
            "ondone" => "login_check_response(data);",
            "event" => "none",
        ]);
        echo fill_template("tmp/index.template", "valid_login_check", false, $params);

        $ABILITIES = user_abilities($USER->userid, $PAGE->id);
        if (empty($ABILITIES->viewpages->allow)) {
            if ($currentpage["opendoorpolicy"] == "0") {
                set_pageid($CFG->SITEID);
            }
        }
    } else {
        $ABILITIES = role_abilities($ROLES->visitor, $PAGE->id);
        if (!($currentpage["siteviewable"] && !empty($ABILITIES->viewpages->allow))) {
            if ($currentpage["opendoorpolicy"] == "0") {
                set_pageid($CFG->SITEID);
            }
        }
    }

    // Main Layout
    $params = [
        "mainmast" => page_masthead(true),
        "sidemast" => page_masthead(false),
        "sidecontents" => get_page_contents($PAGE->id, 'side'),
        "middlecontents" => get_page_contents($PAGE->id, 'middle'),
    ];
    echo fill_template("tmp/index.template", "mainlayout_template", false, $params);

    // End Page
    include('footer.html');

    // Log
    log_entry("page", null, "Page View");
}
?>