X-Git-Url: http://git.shiar.nl/minimedit.git/blobdiff_plain/1ed6d72f061c2bc619f4e69cd0fa8f458a1e1206..HEAD:/page.php

diff --git a/page.php b/page.php
index 50e098a..30f0e3c 100644
--- a/page.php
+++ b/page.php
@@ -2,167 +2,99 @@
 error_reporting(E_ALL);
 ini_set('display_errors', TRUE);
 
-function abort($body, $status = NULL) {
-	if ($status) header("HTTP/1.1 $status");
-	print "$body\n";
-	exit;
-}
-
-function getoutput($blocks = [])
-{
-	$doc = ob_get_clean();
-
-	if (!empty($blocks['warn'])) {
-		$warn = '<p class="warn">[[warn]]</p>';
-		if ($offset = strpos($doc, '</h2>')) {
-			$doc = substr_replace($doc, "\n\n".$warn, $offset + 5, 0);
-		}
-		else {
-			$doc = $warn . "\n\n" . $doc;
-		}
-	}
-
-	return preg_replace_callback(
-		'< \[\[ ([^] ]+) ([^]]*) \]\] >x',
-		function ($sub) use ($blocks) {
-			list ($placeholder, $name, $params) = $sub;
-			if (isset($blocks[$name])) {
-				$html = $blocks[$name];
-			}
-			elseif (file_exists("$name.php")) {
-				ob_start();
-				$Page = $GLOBALS['Page'];
-				$Args = $GLOBALS['Args'];
-				foreach (explode(' ', $params) as $param) {
-					if ($set = strpos($param, '=')) {
-						$_GET[ substr($param, 0, $set) ] = substr($param, $set + 1);
-					}
-					elseif (!empty($param)) {
-						$Args .= '/'.$param;
-					}
-				}
-				include "$name.php";
-				$html = ob_get_clean();
-			}
-			else {
-				$html = '<strong class="warn"><em>'.$name.'</em> ontbreekt</strong>';
-			}
-			return sprintf('<!--BLOCK:%s-->%s<!--/-->',
-				is_numeric($name) ? '' : $placeholder, # edit replacement
-				preg_replace('{<!--[^-]*-->}', '', $html) # contents
-			);
-		},
-		$doc
-	);
-}
-
-# custom error handling
+define('DOCROOT', getcwd());
+set_include_path(implode(PATH_SEPARATOR, [ DOCROOT, __DIR__ ]));
 
-define('DOCROOT', getcwd().'/');
+include_once 'error.inc.php';
 
-function fail($error)
-{
-	http_response_code(500);
-	include_once 'page.inc.php';
-	ob_start();
-	require_once DOCROOT.'500.html';
-	print getoutput(['debug' => $error]);
-}
+# setup requested page
 
-set_exception_handler('fail');
+$request = preg_replace('/\?.*/', '', @$_SERVER['PATH_INFO'] ?: $_SERVER['REQUEST_URI']);
+$request = urldecode(trim($request, '/')) ?: 'index';
 
-define('E_FATAL', E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR | E_USER_ERROR);
-
-set_error_handler(function ($level, $error, $file, $line) {
-	if ($level & E_FATAL) {
-		fail($error);
-		return;
+$staticpage = "$request.html";
+if (file_exists($staticpage)) {
+	if (is_link($staticpage)) {
+		$target = preg_replace('/\.html$/', '', readlink($staticpage));
+		abort($target, '307 Shorthand');
 	}
-	return FALSE;
-});
+}
+elseif (file_exists("$request/index.html")) {
+	$staticpage = "$request/index.html";
+}
 
-register_shutdown_function(function () {
-	# display failure page for fatal exceptions
-	$error = error_get_last();
-	if (!($error['type'] & E_FATAL)) return;
-	fail("Fatal: $error[message] in $error[file]:$error[line]");
-});
+require_once('article.inc.php');
+$Page = new ArchiveArticle($staticpage);
 
-error_reporting(error_reporting() & ~E_FATAL);
+if (@$_SERVER['HTTP_ACCEPT'] === 'text/plain') {
+	$Page->api = TRUE;
+}
 
 # user login and control
 
-include_once 'auth.inc.php';
-$Edit = isset($_GET['edit']);
-
-# distinguish subpage Args from topmost Page script
-
-$Args = '';
-$Page = preg_replace('/\?.*/', '', @$_SERVER['PATH_INFO'] ?: $_SERVER['REQUEST_URI']);
-$Page = urldecode(trim($Page, '/')) ?: 'index';
-while (TRUE) {
-	if (file_exists("$Page/.private")) {
-		# access restriction
-		if (empty($User)) {
-			http_response_code(303);
-			$target = urlencode($_SERVER['REQUEST_URI']);
-			header("Location: /login?goto=$target");
-			exit;
-		}
-		$PageAccess = $Page;
-	}
+include_once 'auth.inc.php'; // sets global $User
 
-	if (file_exists("$Page/index.php")) {
-		break;
+if ($Page->restricted) {
+	# access restriction
+	if (!$User->login) {
+		$target = urlencode($Page->link);
+		abort("/login?goto=$target", '303 Eerst inloggen');
 	}
-
-	$up = strrpos($Page, '/');
-	$Args = substr($Page, $up) . $Args;
-	$Page = substr($Page, 0, $up);
-	if ($up === FALSE) {
-		break;
+	elseif ($check = file_get_contents("{$Page->restricted}/.private")
+	and !$User->admin(trim($check))) {
+		http_response_code(403);
+		$Page->raw('403.inc.html');
 	}
 }
 
-# load static contents
+# prepare page contents
 
-ob_start(); # page body
-ob_start(); # inner html
-print '<div class="static">'."\n\n";
+header(sprintf('Content-Security-Policy: %s', implode('; ', [
+	"default-src 'self' 'unsafe-inline' http://cdn.ckeditor.com", # some overrides remain
+	"img-src 'self' data: blob: http://cdn.ckeditor.com", # inline svg (in css)
+	"base-uri 'self'", # only local pages
+	"frame-ancestors 'none'", # prevent malicious embedding
+])));
+header('Referrer-Policy: no-referrer-when-downgrade');
 
-$found = FALSE;
-if (file_exists("$Page$Args.html")) {
-	$found = include "./$Page$Args.html";
-}
-elseif (file_exists("$Page$Args/index.html")) {
-	$found = include "./$Page$Args/index.html";
-}
-elseif (!empty($User['admin'])) {
-	$found = include (file_exists("$Page/template.html") ? "$Page/template.html" : './template.html');
-}
-
-print "</div>\n\n";
-
-# execute dynamic code
+$Page->place += [
+	'user'  => $User->login ?: '',
+	'url'   => htmlspecialchars($_SERVER['REQUEST_URI']),
+];
 
-$Place = [];
+if ($Page->editable = $User->admin("edit {$Page->link}")) {
+	include_once 'edit/head.inc.php';
+}
 
-if ($Page) {
-	$found |= require "./$Page/index.php";
+if (isset($Page->raw)
+and @$_SERVER['HTTP_ACCEPT'] !== 'application/xml') {
+	$Page->raw = '<div class="static">'."\n\n".$Page->raw."</div>\n\n";
 }
 
-$Place += [
-	'user'  => empty($User) ? '' : $User['name'],
-	'url'   => htmlspecialchars($_SERVER['REQUEST_URI']),
-];
+# output dynamic and/or static html
 
-# global html
+include_once 'format.inc.php';
 
-if (!$found) {
-	# no resulting output
-	http_response_code(404);
-	@require "./404.html";
+ob_start();
+if ($Page->handler and !$Page->index($Page->api)) {
+	# replace contents by code output on false return
+	$Page->raw = ob_get_clean();
+}
+else {
+	# keep article contents
+	if (!isset($Page->body)) {
+		# no resulting output
+		http_response_code(404);
+		@require '404.inc.html';
+		$Page->raw = ob_get_clean() . $Page->raw;
+	}
 }
 
-include_once 'page.inc.php';
+if (@$_SERVER['HTTP_ACCEPT'] === 'application/xml') {
+	header('Access-Control-Allow-Origin: *');
+}
+elseif (!$Page->api) {
+	include_once 'page.inc.php';
+}
+print $Page->render();