From 55fb3e4bd833f042a82657cc75e7e4c657402f9e Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org>
Date: Wed, 12 May 2021 17:25:57 +0200
Subject: use unique hashes when smuggling whitelist setting

---
 common/gen_unique.js | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 common/gen_unique.js

(limited to 'common/gen_unique.js')

diff --git a/common/gen_unique.js b/common/gen_unique.js
new file mode 100644
index 0000000..920426b
--- /dev/null
+++ b/common/gen_unique.js
@@ -0,0 +1,32 @@
+/**
+* Myext generating unique, per-site hash
+*
+* Copyright (C) 2021 Wojtek Kosior
+*
+* Dual-licensed under:
+*   - 0BSD license
+*   - GPLv3 or (at your option) any later version
+*/
+
+"use strict";
+
+(() => {
+    const sha256 = window.sha256;
+    const browser = window.browser;
+    const is_chrome = window.is_chrome;
+
+    function get_id()
+    {
+	if (is_chrome)
+	    return browser.runtime.getManifest().key.substring(0, 50);
+	else
+	    return browser.runtime.getURL("dummy");
+    }
+
+    function gen_unique(url)
+    {
+	return "#" + sha256(get_id() + url);
+    }
+
+    window.gen_unique = gen_unique;
+})();
-- 
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