X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FCore%2FTheme.php;h=c972e09fc71a659c085a7a0288c7b69f3391d19c;hb=c713c2bf622257dbecf223b5f58bf8a98dde9d65;hp=5479f8f46f8e2deeb097d1dd0c98d9401da0cccb;hpb=1df19d3553efc02c76ed17cdc617312f19b21bce;p=friendica.git

diff --git a/src/Core/Theme.php b/src/Core/Theme.php
index 5479f8f46f..c972e09fc7 100644
--- a/src/Core/Theme.php
+++ b/src/Core/Theme.php
@@ -8,6 +8,7 @@ namespace Friendica\Core;
 
 use Friendica\BaseObject;
 use Friendica\Model\Profile;
+use Friendica\Util\Strings;
 
 require_once 'boot.php';
 
@@ -16,6 +17,23 @@ require_once 'boot.php';
  */
 class Theme
 {
+	public static function getAllowedList()
+	{
+		$allowed_themes_str = Config::get('system', 'allowed_themes');
+		$allowed_themes_raw = explode(',', $allowed_themes_str);
+		$allowed_themes = [];
+		if (count($allowed_themes_raw)) {
+			foreach ($allowed_themes_raw as $theme) {
+				$theme = Strings::sanitizeFilePathItem(trim($theme));
+				if (strlen($theme) && is_dir("view/theme/$theme")) {
+					$allowed_themes[] = $theme;
+				}
+			}
+		}
+
+		return $allowed_themes;
+	}
+
 	/**
 	 * @brief Parse theme comment in search of theme infos.
 	 *
@@ -33,6 +51,8 @@ class Theme
 	 */
 	public static function getInfo($theme)
 	{
+		$theme = Strings::sanitizeFilePathItem($theme);
+
 		$info = [
 			'name' => $theme,
 			'description' => "",
@@ -96,31 +116,37 @@ class Theme
 	 */
 	public static function getScreenshot($theme)
 	{
+		$theme = Strings::sanitizeFilePathItem($theme);
+
 		$exts = ['.png', '.jpg'];
 		foreach ($exts as $ext) {
 			if (file_exists('view/theme/' . $theme . '/screenshot' . $ext)) {
-				return(System::baseUrl() . '/view/theme/' . $theme . '/screenshot' . $ext);
+				return System::baseUrl() . '/view/theme/' . $theme . '/screenshot' . $ext;
 			}
 		}
-		return(System::baseUrl() . '/images/blank.png');
+		return System::baseUrl() . '/images/blank.png';
 	}
 
-	// install and uninstall theme
 	public static function uninstall($theme)
 	{
-		Logger::log("Addons: uninstalling theme " . $theme);
+		$theme = Strings::sanitizeFilePathItem($theme);
 
-		include_once "view/theme/$theme/theme.php";
-		if (function_exists("{$theme}_uninstall")) {
-			$func = "{$theme}_uninstall";
-			$func();
+		// silently fail if theme was removed or if $theme is funky
+		if (file_exists("view/theme/$theme/theme.php")) {
+			Logger::log("Addons: uninstalling theme " . $theme);
+
+			if (function_exists("{$theme}_uninstall")) {
+				$func = "{$theme}_uninstall";
+				$func();
+			}
 		}
 	}
 
 	public static function install($theme)
 	{
-		// silently fail if theme was removed
+		$theme = Strings::sanitizeFilePathItem($theme);
 
+		// silently fail if theme was removed or if $theme is funky
 		if (!file_exists("view/theme/$theme/theme.php")) {
 			return false;
 		}
@@ -166,10 +192,10 @@ class Theme
 			$parent = 'NOPATH';
 		}
 		$theme = \get_app()->getCurrentTheme();
-		$thname = $theme;
+		$parent = Strings::sanitizeFilePathItem($parent);
 		$ext = substr($file, strrpos($file, '.') + 1);
 		$paths = [
-			"{$root}view/theme/$thname/$ext/$file",
+			"{$root}view/theme/$theme/$ext/$file",
 			"{$root}view/theme/$parent/$ext/$file",
 			"{$root}view/$ext/$file",
 		];
@@ -195,6 +221,8 @@ class Theme
 	 */
 	public static function getStylesheetPath($theme)
 	{
+		$theme = Strings::sanitizeFilePathItem($theme);
+
 		if (!file_exists('view/theme/' . $theme . '/style.php')) {
 			return 'view/theme/' . $theme . '/style.css';
 		}