From a8d025395bc0032d964c2afc8c4fb5d2fa631a44 Mon Sep 17 00:00:00 2001
From: Alexander Zinchuk <alx.zinchuk@gmail.com>
Date: Tue, 20 Jun 2023 20:55:18 +0200
Subject: [PATCH] Link: Fix protocol verification (#3417)

---
 src/util/ensureProtocol.ts | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/util/ensureProtocol.ts b/src/util/ensureProtocol.ts
index 412ad9fcf..f32c5bbf8 100644
--- a/src/util/ensureProtocol.ts
+++ b/src/util/ensureProtocol.ts
@@ -5,5 +5,15 @@ export function ensureProtocol(url?: string) {
 
   // HTTP was chosen by default as a fix for https://bugs.telegram.org/c/10712.
   // It is also the default protocol in the official TDesktop client.
-  return url.includes('://') ? url : `http://${url}`;
+  try {
+    const parsedUrl = new URL(url);
+    // eslint-disable-next-line no-script-url
+    if (parsedUrl.protocol === 'javascript:') {
+      return `http://${url}`;
+    }
+
+    return url;
+  } catch (err) {
+    return `http://${url}`;
+  }
 }