From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Robert Pluim Newsgroups: gmane.emacs.devel Subject: Re: master ce63f91025: Add textsec functions for verifying email addresses Date: Tue, 18 Jan 2022 14:38:05 +0100 Message-ID: <87lezdp3k2.fsf@gmail.com> References: <164250841214.433.17670666873471731764@vcs2.savannah.gnu.org> <20220118122012.7A3A4C0DA1B@vcs2.savannah.gnu.org> 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="6355"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Lars Ingebrigtsen To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Jan 18 15:49:17 2022 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 1n9pnR-0001WC-30 for ged-emacs-devel@m.gmane-mx.org; Tue, 18 Jan 2022 15:49:17 +0100 Original-Received: from localhost ([::1]:44620 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1n9pnQ-0008MQ-5I for ged-emacs-devel@m.gmane-mx.org; Tue, 18 Jan 2022 09:49:16 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:44112) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1n9ogb-00082m-M8 for emacs-devel@gnu.org; Tue, 18 Jan 2022 08:38:10 -0500 Original-Received: from [2a00:1450:4864:20::330] (port=54992 helo=mail-wm1-x330.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1n9oga-0005h2-6x for emacs-devel@gnu.org; Tue, 18 Jan 2022 08:38:09 -0500 Original-Received: by mail-wm1-x330.google.com with SMTP id p18so27724001wmg.4 for ; Tue, 18 Jan 2022 05:38:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:references:gmane-reply-to-list:date:in-reply-to :message-id:mime-version:content-transfer-encoding; bh=3jduOMWZzLIkAJa1NViMvpFVyTiJflteUVB5w0ES9zY=; b=ZlOJHuA9Cnwa7knLBGDypCOBdun9YwglOg6aHhR1KK09ZY6MstRYokRumKO28pHguw ATaszwxLVJvmBC/qu2l7mlK25Iu4JzdrU0wkogQOkiuKLeggUTnQXrtbXJ5a7Gx0lfBz BxfvtrT+j5v4dDniU4+VToxKDw7E7ezFxKo6ybC1eV8lVSVkcnatWv3AvYNV3pukWRtj yPabPrLPZ8dGIki+6HTkWAtikdEDH5mJGIdGUaAQr1FMhgdocOae42+Lm6JNVMTtE1Tn xaXCSRa3wQ4heUBss2ksg9bvpvZlX5qcWImiA9m0JDGCpdWHq2sgrqbCo9O3WheTH0hV owUg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:references :gmane-reply-to-list:date:in-reply-to:message-id:mime-version :content-transfer-encoding; bh=3jduOMWZzLIkAJa1NViMvpFVyTiJflteUVB5w0ES9zY=; b=6rJZBpJ09QLwTlGSF9DLbRO5VBxHIsA6HW6AsdsAaApZX1+Xn3jSaSI4qJLsgRSV4c 8EeW4Me8FbThKs3lnhvGq74Z1jHdNWCFIbKzqXB+HIHWR6OW6TGSKPIkkoDzoceDSlDq 6QV8IPI2EhXD2sN20LhvFe1zNmnuhAYUHUadhQwdPrh76WWL34LSV81uIaXG0m95qKUi JcfgYk9hLWEUQzpNaKcaUJqg6wKBzbOawWot5pzw1V/V7ZE8qgRofWU92P/mR00Wa4I9 mHXjIcZ7tx/JYlp8VI1QU80FUU99AFMy1Bzaiek5wTslkVSIqN7NVogldoftDaWigl59 ypOA== X-Gm-Message-State: AOAM531Ivv5woYdbxiew6QF+7iEvi/RXBEhbExY/Z+M2mPuwm3FxOmZW ZtQpE1hjZywEO9ZlmZZLyHo= X-Google-Smtp-Source: ABdhPJwIjA5sd61HKxH5jrm8XgSXo0iz/3r46lLgNmJnM0nWm8PwPTYpXVnBJBhBq3SbqFffXW7NSQ== X-Received: by 2002:a05:600c:1d12:: with SMTP id l18mr31998052wms.86.1642513086821; Tue, 18 Jan 2022 05:38:06 -0800 (PST) Original-Received: from rltb ([2a01:e0a:3f3:fb50:bb30:9458:d59e:39a2]) by smtp.gmail.com with ESMTPSA id k2sm5085560wrm.49.2022.01.18.05.38.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Jan 2022 05:38:06 -0800 (PST) Gmane-Reply-To-List: yes In-Reply-To: <20220118122012.7A3A4C0DA1B@vcs2.savannah.gnu.org> (Lars Ingebrigtsen's message of "Tue, 18 Jan 2022 07:20:12 -0500 (EST)") X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::330 (failed) Received-SPF: pass client-ip=2a00:1450:4864:20::330; envelope-from=rpluim@gmail.com; helo=mail-wm1-x330.google.com X-Spam_score_int: -2 X-Spam_score: -0.3 X-Spam_bar: / X-Spam_report: (-0.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, FREEMAIL_REPLY=1, PDS_HP_HELO_NORDNS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 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:284922 Archived-At: >>>>> On Tue, 18 Jan 2022 07:20:12 -0500 (EST), Lars Ingebrigtsen said: Lars> +(defun textsec-email-suspicious-p (email) Lars> + "Say whether EMAIL looks suspicious. Lars> +If it isn't, nil is returned. If it is, a string explaining the Lars> +problem is returned." Lars> + (pcase-let* ((`(,address . ,name) (mail-header-parse-address e= mail t)) Lars> + (`(,local ,domain) (split-string address "@"))) Lars> + (or Lars> + (textsec-domain-suspicious-p domain) Lars> + (textsec-local-address-suspicious-p local) Lars> + (textsec-name-suspicious-p name)))) Lars> + Lars> (provide 'textsec) Does it really matter if the display name of an email address has possibly confusable characters in it? It=CA=BCs not actually used for anything except to be displayed to the user. (as an aside: (mail-header-parse-address "Robert Pluim rpluim@gmail.com") =3D> ("RobertPluimrpluim@gmail.com") I know that=CA=BCs not a valid format, but the behaviour is somewhat surprising) Robert --=20