From f4824bd0d9b8face3c579b1c08a4e6f7576bcfb4 Mon Sep 17 00:00:00 2001
From: Raymond Hill <rhill@raymondhill.net>
Date: Fri, 21 Jan 2022 08:38:48 -0500
Subject: [PATCH] Add shim for FingerprintJS (aka Fingerprint v3)

Related issue:
- https://github.com/uBlockOrigin/uAssets/issues/11408
---
 src/js/redirect-engine.js                    |  3 ++
 src/web_accessible_resources/fingerprint3.js | 42 ++++++++++++++++++++
 2 files changed, 45 insertions(+)
 create mode 100644 src/web_accessible_resources/fingerprint3.js

diff --git a/src/js/redirect-engine.js b/src/js/redirect-engine.js
index 30ba2b94f..bd5f5154d 100644
--- a/src/js/redirect-engine.js
+++ b/src/js/redirect-engine.js
@@ -83,6 +83,9 @@ const redirectableResources = new Map([
     [ 'fingerprint2.js', {
         data: 'text',
     } ],
+    [ 'fingerprint3.js', {
+        data: 'text',
+    } ],
     [ 'google-analytics_analytics.js', {
         alias: [
             'google-analytics.com/analytics.js',
diff --git a/src/web_accessible_resources/fingerprint3.js b/src/web_accessible_resources/fingerprint3.js
new file mode 100644
index 000000000..bd4a4e17b
--- /dev/null
+++ b/src/web_accessible_resources/fingerprint3.js
@@ -0,0 +1,42 @@
+/*******************************************************************************
+
+    uBlock Origin - a browser extension to block requests.
+    Copyright (C) 2022-present Raymond Hill
+
+    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 {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+(function() {
+    'use strict';
+    const visitorId = (( ) => {
+        let id = '';
+        for ( let i = 0; i < 8; i++ ) {
+            id += (Math.random() * 0x10000 + 0x1000 | 0).toString(16).slice(-4);
+        }
+        return id;
+    })();
+    const FingerprintJS = class {
+        static load() {
+            return Promise.resolve(new FingerprintJS());
+        }
+        get() {
+            return Promise.resolve({
+                visitorId,
+            });
+        }
+    };
+    window.FingerprintJS = FingerprintJS;
+})();