1 files changed, 35 insertions, 0 deletions
diff --git a/data/extensions/jsr@javascriptrestrictor/nscl/common/uuid.js b/data/extensions/jsr@javascriptrestrictor/nscl/common/uuid.js
new file mode 100644
index 0000000..bc8aecc
--- /dev/null
+++ b/data/extensions/jsr@javascriptrestrictor/nscl/common/uuid.js
@@ -0,0 +1,35 @@
+/*
+ * NoScript Commons Library
+ * Reusable building blocks for cross-browser security/privacy WebExtensions.
+ * Copyright (C) 2020-2021 Giorgio Maone <https://maone.net>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later
+ * version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+'use strict';
+
+function uuid() {
+  try {
+    return ([1e7]+-1e3+-4e3+-8e3+-1e11).replace(/[018]/g,
+      c => (c ^ crypto.getRandomValues(new Uint8Array(1))[0] & 15 >> c / 4)
+            .toString(16));
+  } catch (e) {
+    // fallback, as the Tor Browser seems to fail above
+    uuid = () => 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
+      let r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8);
+      return v.toString(16);
+    });
+  }
+}