From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#51733: 27.1; Detect impossible email addresses better Date: Wed, 19 Jan 2022 15:35:58 +0200 Message-ID: <83h79zsv9d.fsf@gnu.org> References: <87czn8etuz.7.fsf@jidanni.org> <875yqi5kk7.fsf@gnus.org> <83zgnuuucu.fsf@gnu.org> <83r196uqni.fsf@gnu.org> <87sftm3ye5.fsf@gnus.org> <87iluh4ety.fsf@gnus.org> <87ee55474p.fsf@gnus.org> <87a6ft46mr.fsf@gnus.org> <874k6146ay.fsf@gnus.org> <87zgnt2qz9.fsf@gnus.org> <87v8yh2ot4.fsf@gnus.org> <87r1952omd.fsf@gnus.org> <831r14vq70.fsf@gnu.org> <8735lkdqll.fsf@gnus.org> <834k60t03u.fsf@gnu.org> <87h79zdgxe.fsf@gnus.org> <83sftjswv8.fsf@gnu.org> <87zgnrc1sf.fsf@gnus.org> <83o847swdk.fsf@gnu.org> <87r193c1bz.fsf@gnus.org> <83lezbsvrb.fsf@gnu.org> <87ilufc0o0.fsf@gnus.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="21298"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 51733@debbugs.gnu.org To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Jan 19 15:23:33 2022 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1nABs5-0005ON-1O for geb-bug-gnu-emacs@m.gmane-mx.org; 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Original-Received: from [87.69.77.57] (port=3859 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nAB87-0007GO-8J; Wed, 19 Jan 2022 08:36:06 -0500 In-Reply-To: <87ilufc0o0.fsf@gnus.org> (message from Lars Ingebrigtsen on Wed, 19 Jan 2022 14:31:11 +0100) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:224595 Archived-At: > From: Lars Ingebrigtsen > Cc: 51733@debbugs.gnu.org > Date: Wed, 19 Jan 2022 14:31:11 +0100 > > Eli Zaretskii writes: > > > I'm not asking to _replace_ RFC2047 support, I'm saying that we should > > also support email addresses that were already decoded, for the use > > cases where that could be more convenient or where the wire level is > > unavailable. > > These already exist. The applications can call *-name-suspicious-p > (etc) individually, if they want to. I don't have a NAME, I have a full email address. > > Why would you object to extending these functions so that they could > > support decoded email addresses? What harm could that possibly do? > > That's the point -- when doing DWIM parsing I didn't say DWIM, you did. > the function can't reliably > say whether a string is a suspicious email address, because the attacker > may construct a name part, that when decoded, confuses the address > parser, and thereby escapes domain/local part checking. (Think of > various combinations of names that contain "@" and "," characters.) When the wire format is gone, this is all I have left. You are saying we should leave this case without a solution. So be it.