Improve trusted-set-cookie scriptlet

gorhill · gorhill · commit 3a2bb6251904 · 2025-06-14T09:26:27.000-04:00
Ability to use regex value for `, domain, value` vararg. Related discussion: uBlockOrigin/uAssets@afc6ff5#commitcomment-160035082
diff --git a/src/js/resources/cookie.js b/src/js/resources/cookie.js
@@ -135,7 +135,15 @@ export function setCookieFn(
 
     if ( trusted ) {
         if ( options.domain ) {
-            cookieParts.push(`; domain=${options.domain}`);
+            let domain = options.domain;
+            if ( /^\/.+\//.test(domain) ) {
+                const reDomain = new RegExp(domain.slice(1, -1));
+                const match = reDomain.exec(document.location.hostname);
+                domain = match ? match[0] : undefined;
+            }
+            if ( domain ) {
+                cookieParts.push(`; domain=${domain}`);
+            }
         }
         cookieParts.push('; Secure');
     } else if ( /^__(Host|Secure)-/.test(name) ) {
