gorhill
diff --git a/‎src/js/resources/prevent-clipboard-write.js‎
Lines changed: 77 additions & 0 deletions b/‎src/js/resources/prevent-clipboard-write.js‎
Lines changed: 77 additions & 0 deletions
diff --git a/‎src/js/resources/scriptlets.js‎
Lines changed: 1 addition & 0 deletions b/‎src/js/resources/scriptlets.js‎
Lines changed: 1 addition & 0 deletions
@@ -0,0 +1,77 @@
+/*******************************************************************************
+
+    uBlock Origin - a browser extension to block requests.
+    Copyright (C) 2019-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
+*/
+
+import { proxyApplyFn } from './proxy-apply.js';
+import { registerScriptlet } from './base.js';
+import { safeSelf } from './safe-self.js';
+
+/******************************************************************************/
+
+/**
+ * @scriptlet prevent-clipboard-write
+ * 
+ * @description
+ * Prevent the clipboard from being overwritten.
+ * 
+ * @param needle
+ * A pattern or regex to match against the text for the prevention to occur.
+ * 
+ * @param domAlert
+ * Optional. A vararg to be used to alert the user in case a clipboard write
+ * operation was prevented. The parameter is composed of two parts separated by
+ * `|`: the first part is a CSS selector used to target a DOM element which
+ * content will be replaced with the text found in the second part.
+ * 
+ * @example 
+ * ##+js(prevent-clipboard-write, /^bash <<</, domAlert, body|Clickfix attempt defused)
+ * 
+ * */
+
+function preventClipboardWrite(needle = '') {
+    const safe = safeSelf();
+    const logPrefix = safe.makeLogPrefix('prevent-clipboard-write');
+    const pattern = safe.initPattern(needle);
+    const extraArgs = safe.getExtraArgs(Array.from(arguments), 1);
+    proxyApplyFn('navigator.clipboard.writeText', function(context) {
+        const text = `${context.callArgs[0]}`.trim();
+        if ( safe.testPattern(pattern, text) !== true ) {
+            return context.reflect();
+        }
+        if ( extraArgs.domAlert ) {
+            const match = /^([^|]+)\s*\|\s*(.+)/.exec(extraArgs.domAlert);
+            if ( match ) {
+                const elem = document.querySelector(match[1]);
+                if ( elem ) {
+                    elem.textContent = match[2];
+                }
+            }
+        }
+        safe.uboLog(logPrefix, 'Prevented:\n\t', text);
+    });
+}
+registerScriptlet(preventClipboardWrite, {
+    name: 'prevent-clipboard-write.js',
+    requiresTrust: true,
+    dependencies: [
+        proxyApplyFn,
+        safeSelf,
+    ],
+});
@@ -29,6 +29,7 @@ import './noeval.js';
 import './object-prune.js';
 import './prevent-addeventlistener.js';
 import './prevent-bab.js';
+import './prevent-clipboard-write.js';
 import './prevent-dialog.js';
 import './prevent-fetch.js';
 import './prevent-innerHTML.js';