Fix security issue reported by @chbi

[github/shaarli/Shaarli.git] / index.php

diff --git a/index.php b/index.php
index 07470a0835d46deda2ac29c5d95670cd63714357..8f0179e5e3984e0251488b0fc08cc898a1f33053 100644 (file)
--- a/index.php
+++ b/index.php
@@ -718,6 +718,23 @@ function renderPage($conf, $pluginManager, $LINKSDB, $history)
     $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
     $targetPage = Router::findPage($query, $_GET, isLoggedIn());
 
+    if (
+        // if the user isn't logged in
+        !isLoggedIn() &&
+        // and Shaarli doesn't have public content...
+        $conf->get('privacy.hide_public_links') &&
+        // and is configured to enforce the login
+        $conf->get('privacy.force_login') &&
+        // and the current page isn't already the login page
+        $targetPage !== Router::$PAGE_LOGIN &&
+        // and the user is not requesting a feed (which would lead to a different content-type as expected)
+        $targetPage !== Router::$PAGE_FEED_ATOM &&
+        $targetPage !== Router::$PAGE_FEED_RSS
+    ) {
+        // force current page to be the login page
+        $targetPage = Router::$PAGE_LOGIN;
+    }
+
     // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
     // Then assign generated data to RainTPL.
     $common_hooks = array(
@@ -823,7 +840,7 @@ function renderPage($conf, $pluginManager, $LINKSDB, $history)
         }
 
         $data = array(
-            'search_tags' => implode(' ', $filteringTags),
+            'search_tags' => implode(' ', escape($filteringTags)),
             'tags' => $tagList,
         );
         $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => isLoggedIn()));
@@ -853,7 +870,7 @@ function renderPage($conf, $pluginManager, $LINKSDB, $history)
         }
 
         $data = [
-            'search_tags' => implode(' ', $filteringTags),
+            'search_tags' => implode(' ', escape($filteringTags)),
             'tags' => $tags,
         ];
         $pluginManager->executeHooks('render_taglist', $data, ['loggedin' => isLoggedIn()]);
@@ -1065,10 +1082,10 @@ function renderPage($conf, $pluginManager, $LINKSDB, $history)
     // -------- Display the Tools menu if requested (import/export/bookmarklet...)
     if ($targetPage == Router::$PAGE_TOOLS)
     {
-        $data = array(
+        $data = [
             'pageabsaddr' => index_url($_SERVER),
-            'sslenabled' => !empty($_SERVER['HTTPS'])
-        );
+            'sslenabled' => is_https($_SERVER),
+        ];
         $pluginManager->executeHooks('render_tools', $data);
 
         foreach ($data as $key => $value) {