From 704f2da0673dc714f72b9bb82f6bf648795d4335 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <koszko@koszko.org>
Date: Mon, 6 Sep 2021 20:45:50 +0200
Subject: re-enable sanitizing of data: URLs and also sanitize intrinsics on
 non-HTML pages where CSP doesn't work

---
 content/freezer.js | 64 ------------------------------------------------------
 1 file changed, 64 deletions(-)
 delete mode 100644 content/freezer.js

(limited to 'content/freezer.js')

diff --git a/content/freezer.js b/content/freezer.js
deleted file mode 100644
index 0ea362e..0000000
--- a/content/freezer.js
+++ /dev/null
@@ -1,64 +0,0 @@
-/**
- * Helper functions for blocking scripts in pages, based off NoScript's lib/DocumentFreezer.js
- *
- * Copyright (C) 2005-2021 Giorgio Maone - https://maone.net
- * Copyright (C) 2021 jahoti
- * Redistribution terms are gathered in the `copyright' file.
- */
-
-const loaderAttributes = ["href", "src", "data"];
-const jsOrDataUrlRx = /^(?:data:(?:[^,;]*ml|unknown-content-type)|javascript:)/i;
-
-function sanitize_attributes(element) {
-    if (element._frozen)
-	return;
-    let fa = [];
-    let loaders = [];
-    let attributes = element.attributes || [];
-
-    for (let a of attributes) {
-	let name = a.localName.toLowerCase();
-	if (loaderAttributes.includes(name))
-	    if (jsOrDataUrlRx.test(a.value))
-		loaders.push(a);
-
-	else if (name.startsWith("on")) {
-	    console.debug("Removing", a, element.outerHTML);
-	    fa.push(a.cloneNode());
-	    a.value = "";
-	    element[name] = null;
-	}
-    }
-    if (loaders.length) {
-	for (let a of loaders) {
-	    fa.push(a.cloneNode());
-	    a.value = "javascript://frozen";
-	}
-	if ("contentWindow" in element)
-	    element.replaceWith(element = element.cloneNode(true));
-
-    }
-    if (fa.length)
-	element._frozenAttributes = fa;
-    element._frozen = true;
-}
-
-function mozilla_suppress_scripts(e) {
-    if (document.readyState === 'complete') {
-	removeEventListener('beforescriptexecute', blockExecute, true);
-	console.log('Script suppressor has detached.');
-	return;
-    }
-    console.log("script event", e);
-    if (e.isTrusted && !e.target._hachette_payload) {
-	e.preventDefault();
-	console.log('Suppressed script', e.target);
-    }
-};
-
-/*
- * EXPORTS_START
- * EXPORT mozilla_suppress_scripts
- * EXPORT sanitize_attributes
- * EXPORTS_END
- */
-- 
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