From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Access control in Emacs? Date: Tue, 14 Sep 2021 10:49:40 -0400 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="17315"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: "emacs-devel@gnu.org" To: Qiantan Hong Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Sep 14 17:32:57 2021 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mQAQa-0004K9-V5 for ged-emacs-devel@m.gmane-mx.org; Tue, 14 Sep 2021 17:32:57 +0200 Original-Received: from localhost ([::1]:33920 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mQAQZ-0007GI-OG for ged-emacs-devel@m.gmane-mx.org; Tue, 14 Sep 2021 11:32:55 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:47796) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mQ9ku-0008Ty-1W for emacs-devel@gnu.org; Tue, 14 Sep 2021 10:49:52 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:33065) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mQ9ko-0008Kw-5n for emacs-devel@gnu.org; Tue, 14 Sep 2021 10:49:50 -0400 Original-Received: from pmg1.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 2BB83100183; Tue, 14 Sep 2021 10:49:49 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id A513D100140; Tue, 14 Sep 2021 10:49:47 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1631630987; bh=GZMeg84kY0RLYxHt04iWbjX5ZuGYtjYs+kwmtzn8/iQ=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=HybO7EbQxbptPGkgNWurunmcgTMO+IHABWLG1cAnm8zNQ/8CEgIDuxWUNz2wz+PHG FG0jerKNzt4br10Ifodm/elOVtf+ySh942Na6NLTHb7bLw4RNnbE8UPmJhnJsQ2y+W i8NIai2lueE7GtSYHnMNfoGWA/2ORpfq4k+VrsvVUSs3X6cEu2T3Wcx3vlZ8ipsHdO kw4ClQ0fxB2whx8Jz7yLt1rc1anAK6g6XQ5llfyEa/fRoijUXcU/OLSRLh33XDWujf YHmYoe+tIhdtMcOl6pvZSXgiqrHWfkURgcfPiA2vFd73PQ3WBGtQO3D/SmqRqQH4xK 2sDRjjshghPGA== Original-Received: from pastel (unknown [45.72.241.23]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id E2AF812041B; Tue, 14 Sep 2021 10:49:40 -0400 (EDT) In-Reply-To: (Qiantan Hong's message of "Tue, 14 Sep 2021 12:49:27 +0000") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:274702 Archived-At: > I=E2=80=99m adding more powerful features to crdt.el including buffer loc= al variable > synchronizations and arbitrary remote command/function call, Given the way Emacs is designed/structured this is a recipe for big gaping security holes. It can be OK to allow such things for *very* specific cases (a few specific well understood variables), but even such a "whitelist" is a problem because it requires careful and long term maintenance. Stefan