index.php

<?php
//Copyright (c) 2017-2020 Divested Computing Group
//
//This program is free software: you can redistribute it and/or modify
//it under the terms of the GNU Lesser General Public License as published by
//the Free Software Foundation, either version 3 of the License, or
//(at your option) any later version.
//
//This program 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 Lesser General Public License for more details.
//
//You should have received a copy of the GNU Lesser General Public License
//along with this program.  If not, see <https://www.gnu.org/licenses/>.

$handler = false;
include "sbnr/config.php";
include "sbnr/security.php";
putenv('GDFONTPATH=' . realpath('.') . '/sbnr/captcha_fonts/');
include "sbnr/captcha.php";
include "sbnr/utils.php";
include "sbnr/pre.php";

//START OF PAGE LOADER
$page = noHTML($_GET["page"]);
$page = str_replace("&lowbar;", "_", $page);
if((($SBNR_CAPTCHA_WALL || in_array($page, $SBNR_CAPTCHA_WALL_PAGES) || shouldChallengeRequest()) && extension_loaded('gd')) && !($_SESSION['SBNR_CAPTCHA_WALL_PASSED'] === true)) {
	$_SESSION['SBNR_CAPTCHA_WALL_URI'] = $_SERVER["REQUEST_URI"];
	$SBNR_AT_CAPTCHA_WALL = true;
} else {
	if(strlen($page) == 0) { //default to home page if not empty
		$page = "home";
		if($SBNR_GEN_ONE_PAGE) { $page = "home-1p"; }
	}
	if(checkString($page, 1, 32, 0, 0, 0)) { //validate string to prevent accessing out of self resources
		$pageRaw = $page;
		$page = "pages/" . $page . ".html";
		if(file_exists($page)) { //check if page exists
			$pageReal = $page;
			$pageIsHome = ($page === "pages/home.html" || $page === "pages/home-1p.html");
		} else { //doesn't exist
			$pageContents = genErrorPage(404);
		}
	} else { //invalidate request
		$pageContents = genErrorPage(400);
	}
	//page caching
	if(in_array($pageRaw, $SBNR_CACHABLE_PAGES) && !$SBNR_OBF_DISABLE_CACHE) {
		$pageIsCached = true;
		header("Cache-Control: max-age=43200");
		header("Pragma: cache");
	}

}
//END OF PAGE LOADER

//START OF PAGE
include "fragments/header.html";
if($SBNR_AT_CAPTCHA_WALL) {
	include "sbnr/captcha_wall.html";
} if(isset($pageReal)) { //load the page if exists
	include $pageReal;
} else { //page doesn't exist, show internally generated page
	print($pageContents);
}
include "fragments/footer.html";
//END OF PAGE

include "sbnr/post.php";
print("<!-- Server Side Timing: " . ((microtime(true) - $_SERVER["REQUEST_TIME_FLOAT"])*1000) . "ms -->");
header('Server-Timing: app;dur=' . ((microtime(true) - $_SERVER["REQUEST_TIME_FLOAT"])*1000));

?>