From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.3 required=3.0 tests=BAYES_05,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C238FC48BE0 for ; Fri, 11 Jun 2021 09:10:18 +0000 (UTC) Received: from lists.zx2c4.com (lists.zx2c4.com [165.227.139.114]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 025706136D for ; Fri, 11 Jun 2021 09:10:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 025706136D Authentication-Results: mail.kernel.org; dmarc=pass (p=none dis=none) header.from=zx2c4.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=wireguard-bounces@lists.zx2c4.com Received: by lists.zx2c4.com (ZX2C4 Mail Server) with ESMTP id 8be0f9f0; Fri, 11 Jun 2021 09:09:25 +0000 (UTC) Received: from mail.zx2c4.com (mail.zx2c4.com [104.131.123.232]) by lists.zx2c4.com (ZX2C4 Mail Server) with ESMTPS id 36750f28 (TLSv1.3:AEAD-AES256-GCM-SHA384:256:NO) for ; Fri, 11 Jun 2021 09:09:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zx2c4.com; s=20210105; t=1623402559; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=bCx/aHREiQVnNxbOuWFcZp2wYKa4V+r8uylwDkfilrk=; b=eb1Inl/EIXOiDJKXhDQHFx91WxsjPJmz8falkfaVvVRrHBedgk+QgttrcCD6tiQuEft+2B cNc48KWqd0djl5INfhbkY+7o7ScyzMCGHufteQMqezpTmr6oseqVrtK8EXRGJSqAlTRcxs 1JbRp8ekB+K1eATVEOwTx2tkgy3p9Go= Received: by mail.zx2c4.com (ZX2C4 Mail Server) with ESMTPSA id 1a152e13 (TLSv1.3:AEAD-AES256-GCM-SHA384:256:NO) for ; Fri, 11 Jun 2021 09:09:19 +0000 (UTC) Received: by mail-yb1-f177.google.com with SMTP id m9so3355985ybo.5 for ; Fri, 11 Jun 2021 02:09:19 -0700 (PDT) X-Gm-Message-State: AOAM531iU313xZQUaJvQ4dXdXgj88OFBKoX+9JTfEtD4D7ri+29jrQhN 8qLSrbDdtmjgPENx5BxOgo2LyGavAq55LPNFfsg= X-Google-Smtp-Source: ABdhPJxg8xSQApitw8wtauR63XnQmQKTVdIiXB3bEcbK/+YWKlqCCt72HbHeDhGOocphn3JUkiHJ01Sru821AMwCYJM= X-Received: by 2002:a25:af82:: with SMTP id g2mr4390587ybh.456.1623402559391; Fri, 11 Jun 2021 02:09:19 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:a05:7110:474d:b029:ce:da65:f582 with HTTP; Fri, 11 Jun 2021 02:09:18 -0700 (PDT) In-Reply-To: <8A754E6A-6D25-427E-AF60-4AF9A61DF1B7@mullvad.net> References: <760B19F6-17E7-4276-B2E2-DFE07AB19323@mullvad.net> <3BD85DF3-A8B2-45BF-A78C-D03524A226DC@mullvad.net> <8A754E6A-6D25-427E-AF60-4AF9A61DF1B7@mullvad.net> From: "Jason A. Donenfeld" Date: Fri, 11 Jun 2021 11:09:18 +0200 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: WireGuard is broken on iOS 15 beta To: Andrej Mihajlov Cc: David Crawshaw , WireGuard mailing list Content-Type: text/plain; charset="UTF-8" X-BeenThere: wireguard@lists.zx2c4.com X-Mailman-Version: 2.1.30rc1 Precedence: list List-Id: Development discussion of WireGuard List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: wireguard-bounces@lists.zx2c4.com Sender: "WireGuard" On 6/11/21, Andrej Mihajlov wrote: > let fd = packetFlow.perform(Selector("interface")).toOpaque().advanced(by: > 0x128).assumingMemoryBound(to: Int32.self).pointee Ahh, so that's some sort of 296 byte struct offset, rather than a symbolic name that fails gracefully. Ooof. Okay I'll poke around for other methods, I suppose, as that indeed seems potentially dangerous. Thanks nonetheless for the trick - helpful for getting started. Jason