X-Git-Url: http://git.shiar.nl/minimedit.git/blobdiff_plain/fe92ec8f17c832c4a663aea399dc90a4c09ce6b1..621fc2f9638a1a92aa8535310e7852de5542f11e:/page.php

diff --git a/page.php b/page.php
index 059b615..bb2de0b 100644
--- a/page.php
+++ b/page.php
@@ -8,6 +8,36 @@ function abort($body, $status = NULL) {
 	exit;
 }
 
+function placeholder_include($name, $params = [])
+{
+	$path = stream_resolve_include_path("widget/$name.php");
+	if (!file_exists($path)) {
+		return '<strong class="warn"><em>'.$name.'</em> ontbreekt</strong>';
+	}
+
+	ob_start();
+	$Page = $GLOBALS['Page'] . $GLOBALS['Args'];
+	$Args = '';
+	$Place = $GLOBALS['Place'];
+	foreach ($params as $param) {
+		if ($set = strpos($param, '=')) {
+			$Place[ substr($param, 0, $set) ] = substr($param, $set + 1);
+		}
+		elseif (!empty($param)) {
+			$Args .= '/'.$param;
+		}
+	}
+	try {
+		include "widget/$name.php";
+		return ob_get_clean();
+	}
+	catch (Exception $e) {
+		return sprintf('<strong class="warn">%s</strong>',
+			"fout in <em>$name</em>: {$e->getMessage()}"
+		);
+	}
+}
+
 function getoutput($blocks = [])
 {
 	$doc = ob_get_clean();
@@ -22,15 +52,20 @@ function getoutput($blocks = [])
 		}
 	}
 
+	# keep either login or logout parts depending on user level
+	global $User;
+	$hideclass = $User && $User->login ? 'logout' : 'login';
+	$doc = preg_replace('{\s*<([a-z]+) class="'.$hideclass.'">.*?</\1>}s', '', $doc);
+
 	return preg_replace_callback(
-		'< \[\[ ([^]]*) \]\] >x',
+		'{ (?<! <!--BLOCK: ) \[\[ ([^] ]+) ([^]]*) \]\] }x',
 		function ($sub) use ($blocks) {
-			list ($placeholder, $name) = $sub;
+			list ($placeholder, $name, $params) = $sub;
 			if (isset($blocks[$name])) {
 				$html = $blocks[$name];
 			}
 			else {
-				$html = '<strong class="warn"><em>'.$name.'</em> ontbreekt</strong>';
+				$html = placeholder_include($name, explode(' ', $params));
 			}
 			return sprintf('<!--BLOCK:%s-->%s<!--/-->',
 				is_numeric($name) ? '' : $placeholder, # edit replacement
@@ -43,15 +78,21 @@ function getoutput($blocks = [])
 
 # custom error handling
 
-define('DOCROOT', getcwd().'/');
+define('DOCROOT', getcwd());
+set_include_path(implode(PATH_SEPARATOR, [ DOCROOT, __DIR__ ]));
 
 function fail($error)
 {
+	global $User, $Page, $Args;
 	http_response_code(500);
+	if (!isset($Article)) {
+		$Article = new ArchiveArticle(NULL);
+		$Article->title = 'Fout';
+	}
 	include_once 'page.inc.php';
 	ob_start();
-	require_once DOCROOT.'500.html';
-	print getoutput(['debug' => $error]);
+	require '500.inc.html';
+	print getoutput(['debug' => htmlspecialchars($error)]);
 }
 
 set_exception_handler('fail');
@@ -77,72 +118,90 @@ error_reporting(error_reporting() & ~E_FATAL);
 
 # user login and control
 
-include_once 'auth.inc.php';
+include_once 'auth.inc.php'; // sets global $User
 $Edit = isset($_GET['edit']);
 
-# distinguish subpage Args from topmost Page script
+# setup requested page
 
 $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;
-	}
 
-	if (file_exists("$Page/index.php")) {
-		break;
+$staticpage = "$Page.html";
+if (file_exists($staticpage)) {
+	if (is_link($staticpage)) {
+		$target = preg_replace('/\.html$/', '', readlink($staticpage));
+		header("HTTP/1.1 302 Shorthand");
+		header("Location: $target");
+		exit;
 	}
+}
+elseif (file_exists("$Page/index.html")) {
+	$staticpage = "$Page/index.html";
+}
+
+require_once('article.inc.php');
+$Article = new ArchiveArticle($staticpage);
+
+$Page = $Article->handler;
+$Args = $Article->path;
 
-	$up = strrpos($Page, '/');
-	$Args = substr($Page, $up) . $Args;
-	$Page = substr($Page, 0, $up);
-	if ($up === FALSE) {
-		break;
+if ($PageAccess = $Article->restricted) {
+	# access restriction
+	if (!$User->login) {
+		http_response_code(303);
+		$target = urlencode($Article->link);
+		header("Location: /login?goto=$target");
+		exit;
 	}
 }
 
-# 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: http://cdn.ckeditor.com", # inline svg (in css)
+	"base-uri 'self'", # only local pages
+	"frame-ancestors 'none'", # prevent malicious embedding
+])));
 
-$found = FALSE;
-if (file_exists("$Page$Args.html")) {
-	$found = include "./$Page$Args.html";
+ob_start(); # page body
+$Place = [
+	'user'  => $User->login ?: '',
+	'url'   => htmlspecialchars($_SERVER['REQUEST_URI']),
+];
+
+if (isset($Article->raw)) {
+	if ($User->admin("edit $Page$Args")) {
+		# restore meta tags in static contents for editing
+		foreach (array_reverse($Article->meta) as $metaprop => $val) {
+			$Article->raw = sprintf(
+				'<meta property="%s" content="%s" />'."\n",
+				$metaprop, $val
+			) . $Article->raw;
+		}
+	}
 }
-elseif (file_exists("$Page$Args/index.html")) {
-	$found = include "./$Page$Args/index.html";
+elseif ($User->admin("edit {$Article->link}")) {
+	$Article->raw(file_exists("$Page/template.inc.html") ? "$Page/template.inc.html" : 'template.inc.html');
 }
-elseif (!empty($User['admin'])) {
-	$found = include (file_exists("$Page/template.html") ? "$Page/template.html" : './template.html');
+if (isset($Article->raw)) {
+	$Article->raw = '<div class="static">'."\n\n".$Article->raw."</div>\n\n";
 }
 
-print "</div>\n\n";
+# output dynamic and/or static html
 
-# execute dynamic code
-
-if ($Page) {
-	$found |= require "./$Page/index.php";
+if (!$Page or require("./$Page/index.php")) {
+	# static contents
+	if (isset($Article->raw)) {
+		print $Article->raw;
+	}
+	else {
+		# no resulting output
+		http_response_code(404);
+		@require '404.inc.html';
+	}
 }
 
-# global html
-
 include_once 'page.inc.php';
 
-if (!$found) {
-	# no resulting output
-	http_response_code(404);
-	ob_start();
-	@require "./404.html";
-	print getoutput([ 'url' => htmlspecialchars($_SERVER['REQUEST_URI']) ]);
-}
-