X-Git-Url: https://git.wh0rd.org/?a=blobdiff_plain;f=include%2Ffunctions2.php;h=669bbe038634c83cddd42532b13f623f6041d3b9;hb=21d7585a54925f845cd90c4967dd19b3ad92bb02;hp=31ca98035e953b87fb940a733d4dd68a42c94200;hpb=c63850fad00f228ae9613d8f662dd4d2ff05e528;p=tt-rss.git

diff --git a/include/functions2.php b/include/functions2.php
index 31ca9803..669bbe03 100644
--- a/include/functions2.php
+++ b/include/functions2.php
@@ -17,7 +17,10 @@
 		$params["default_view_order_by"] = get_pref("_DEFAULT_VIEW_ORDER_BY");
 		$params["bw_limit"] = (int) $_SESSION["bw_limit"];
 		$params["label_base_index"] = (int) LABEL_BASE_INDEX;
-		$params["theme"] = get_pref("USER_CSS_THEME", false, false);
+
+		$theme = get_pref( "USER_CSS_THEME", false, false);
+		$params["theme"] = theme_valid("$theme") ? $theme : "";
+
 		$params["plugins"] = implode(", ", PluginHost::getInstance()->get_plugin_names());
 
 		$params["php_platform"] = PHP_OS;
@@ -2422,4 +2425,21 @@
 		return LABEL_BASE_INDEX - 1 + abs($feed);
 	}
 
+	function theme_valid($file) {
+		if ($file == "default.css" || $file == "night.css") return true; // needed for array_filter
+		$file = "themes/" . basename($file);
+
+		if (file_exists($file) && is_readable($file)) {
+			$fh = fopen($file, "r");
+
+			if ($fh) {
+				$header = fgets($fh);
+				fclose($fh);
+
+				return strpos($header, "supports-version:" . VERSION_STATIC) !== FALSE;
+			}
+		}
+
+		return false;
+	}
 ?>