login/pass: error messages below page title

[minimedit.git] / page.php

diff --git a/page.php b/page.php
index 02886a77a04d88faac98d30f7b7570a1a23ba375..30f0e3c59c2e645bd492b1b6f900b50d82a60f8c 100644 (file)
--- a/page.php
+++ b/page.php
@@ -2,120 +2,99 @@
 error_reporting(E_ALL);
 ini_set('display_errors', TRUE);
 
-function getoutput($blocks = [])
-{
-       $rep = [];
-       foreach ($blocks as $name => $html) {
-               $rep["[[$name]]"] = sprintf('<!--BLOCK:%s-->%s<!--/-->',
-                       is_numeric($name) ? '' : "[[$name]]",
-                       preg_replace('{<!--[^-]*-->}', '', $html)
-               );
-       }
-       return str_replace(array_keys($rep), array_values($rep), ob_get_clean());
-}
-
-# custom error handling
+define('DOCROOT', getcwd());
+set_include_path(implode(PATH_SEPARATOR, [ DOCROOT, __DIR__ ]));
 
-define('DOCROOT', getcwd().'/');
-
-function fail($error)
-{
-       http_response_code(500);
-       include_once 'page.inc.php';
-       ob_start();
-       require_once DOCROOT.'500.html';
-       print getoutput(['debug' => $error]);
-}
+include_once 'error.inc.php';
 
-set_exception_handler('fail');
+# setup requested page
 
-define('E_FATAL', E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR | E_USER_ERROR);
+$request = preg_replace('/\?.*/', '', @$_SERVER['PATH_INFO'] ?: $_SERVER['REQUEST_URI']);
+$request = urldecode(trim($request, '/')) ?: 'index';
 
-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('/\?.*/', '', $_SERVER['REQUEST_URI']);
-$Page = urldecode(trim($Page, '/')) ?: 'index';
-while (TRUE) {
-       if (file_exists("$Page/.private")) {
-               # access restriction
-               if (!isset($User)) {
-                       http_response_code(403);
-                       include_once 'page.inc.php';
-                       ob_start();
-                       @require_once './403.html';
-                       exit;
-               }
-       }
+include_once 'auth.inc.php'; // sets global $User
 
-       if (file_exists("$Page.php")) {
-               break;
+if ($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/index.html")) {
-       $found = include "./$Page$Args/index.html";
-}
-elseif (file_exists("$Page$Args.html")) {
-       $found = include "./$Page$Args.html";
+$Page->place += [
+       'user'  => $User->login ?: '',
+       'url'   => htmlspecialchars($_SERVER['REQUEST_URI']),
+];
+
+if ($Page->editable = $User->admin("edit {$Page->link}")) {
+       include_once 'edit/head.inc.php';
 }
-elseif (isset($User) and $User['admin']) {
-       $found = include (file_exists("$Page/template.html") ? "$Page/template.html" : './template.html');
+
+if (isset($Page->raw)
+and @$_SERVER['HTTP_ACCEPT'] !== 'application/xml') {
+       $Page->raw = '<div class="static">'."\n\n".$Page->raw."</div>\n\n";
 }
 
-print "</div>\n\n";
+# output dynamic and/or static html
 
-# execute dynamic code
+include_once 'format.inc.php';
 
-if ($Page) {
-       $found |= @require "./$Page.php";
+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;
+       }
 }
 
-# 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']) ]);
+if (@$_SERVER['HTTP_ACCEPT'] === 'application/xml') {
+       header('Access-Control-Allow-Origin: *');
+}
+elseif (!$Page->api) {
+       include_once 'page.inc.php';
 }
+print $Page->render();