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387 lines
14 KiB
EmacsLisp
387 lines
14 KiB
EmacsLisp
;;; uce.el --- facilitate reply to unsolicited commercial email
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;; Copyright (C) 1996, 1998, 2000 Free Software Foundation, Inc.
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;; Author: stanislav shalunov <shalunov@mccme.ru>
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;; Created: 10 Dec 1996
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;; Keywords: uce, unsolicited commercial email
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;; Code in this file provides semi-automatic means of replying to
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;; UCE's you might get. It works currently only with Rmail and Gnus.
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;; If you would like to make it work with other mail readers,
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;; Rmail-specific section is marked below. If you want to play with
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;; code, please let me know about your changes so I can incorporate
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;; them. I'd appreciate it.
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;; Function uce-reply-to-uce, if called when current message in RMAIL
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;; buffer is a UCE, will setup *mail* buffer in the following way: it
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;; scans full headers of message for 1) normal return address of
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;; sender (From, Reply-To lines); and puts these addresses into To:
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;; header, it also puts abuse@offenders.host address there 2) mailhub
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;; that first saw this message; and puts address of its postmaster
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;; into To: header 3) finally, it looks at Message-Id and adds
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;; posmaster of that host to the list of addresses.
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;; Then, we add "Errors-To: nobody@localhost" header, so that if some
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;; of these addresses are not actually correct, we will never see
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;; bounced mail. Also, mail-self-blind and mail-archive-file-name
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;; take no effect: the ideology is that we don't want to save junk or
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;; replies to junk.
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;; Then we put template into buffer (customizable message that
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;; explains what has happened), customizable signature, and the
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;; original message with full headers and envelope for postmasters.
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;; Then buffer is left for editing.
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;; The reason that function uce-reply-to-uce is Rmail dependant is
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;; that we want full headers of the original message, nothing
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;; stripped. If we use normal means of inserting of the original
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;; message into *mail* buffer headers like Received: (not really
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;; headers, but envelope lines) will be stripped while they bear
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;; valuable for us and postmasters information. I do wish that there
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;; would be some way to write this function in some portable way, but
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;; I am not aware of any.
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;;; Change log:
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;; Dec 10, 1996 -- posted draft version to gnu.sources.emacs
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;; Dec 11, 1996 -- fixed some typos, and Francesco Potorti`
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;; <F.Potorti@cnuce.cnr.it> pointed out that my use of defvar was
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;; weird, suggested fix, and added let form.
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;; Dec 17, 1996 -- made scanning for host names little bit more clever
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;; (obviously bogus stuff like localhost is now ignored).
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;; Nov 11, 1997 -- incorporated changes from Mikael Djurfeldt
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;; <mdj@nada.kth.se> to make uce.el work with Gnus. Changed the text
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;; of message that is sent.
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;; Dec 3, 1997 -- changes from Gareth Jones <gdj1@gdjones.demon.co.uk>
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;; handling Received headers following some line like `From:'.
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;; Aug 16, 2000 -- changes from Detlev Zundel
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;; <detlev.zundel@stud.uni-karlsruhe.de> to make uce.el work with the
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;; latest Gnus. Lars told him it should work for all versions of Gnus
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;; younger than three years.
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;; Setup:
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;; Add the following line to your ~/.emacs:
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;; (autoload 'uce-reply-to-uce "uce" "Reply to UCEs" t nil)
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;; If you want to use it with Gnus also use
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;; (setq uce-mail-reader 'gnus)
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;; store this file (uce.el) somewhere in load-path and byte-compile it.
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;;; Variables:
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;; uce-message-text is template that will be inserted into buffer. It
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;; has reasonable default. If you want to write some scarier one,
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;; please do so and send it to me. Please keep it polite.
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;; uce-signature behaves just like mail-signature. If nil, nothing is
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;; inserted, if t, file ~/.signature is used, if a string, its
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;; contents are inserted into buffer.
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;; uce-uce-separator is line that separates your message from the UCE
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;; that you enclose.
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;; uce-subject-line will be used as subject of outgoing message. If
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;; nil, left blank.
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;;; Code:
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(require 'sendmail)
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;; Those sections of code which are dependent upon
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;; RMAIL are only evaluated if we have received a message with RMAIL...
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;;(require 'rmail)
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(defgroup uce nil
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"Facilitate reply to unsolicited commercial email."
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:prefix "uce-"
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:group 'mail)
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(defcustom uce-mail-reader 'rmail
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"A symbol indicating which mail reader you are using.
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Choose from: `gnus', `rmail'."
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:type '(choice (const gnus) (const rmail))
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:version "20.3"
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:group 'uce)
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(defcustom uce-setup-hook nil
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"Hook to run after UCE rant message is composed.
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This hook is run after `mail-setup-hook', which is run as well."
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:type 'hook
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:group 'uce)
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(defcustom uce-message-text
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"Recently, I have received an Unsolicited Commercial E-mail from you.
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I do not like UCE's and I would like to inform you that sending
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unsolicited messages to someone while he or she may have to pay for
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reading your message may be illegal. Anyway, it is highly annoying
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and not welcome by anyone. It is rude, after all.
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If you think that this is a good way to advertise your products or
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services you are mistaken. Spamming will only make people hate you, not
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buy from you.
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If you have any list of people you send unsolicited commercial emails to,
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REMOVE me from such list immediately. I suggest that you make this list
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just empty.
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----------------------------------------------------
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If you are not an administrator of any site and still have received
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this message then your email address is being abused by some spammer.
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They fake your address in From: or Reply-To: header. In this case,
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you might want to show this message to your system administrator, and
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ask him/her to investigate this matter.
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Note to the postmaster(s): I append the text of UCE in question to
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this message; I would like to hear from you about action(s) taken.
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This message has been sent to postmasters at the host that is
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mentioned as original sender's host (I do realize that it may be
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faked, but I think that if your domain name is being abused this way
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you might want to learn about it, and take actions) and to the
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postmaster whose host was used as mail relay for this message. If
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message was sent not by your user, could you please compare time when
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this message was sent (use time in Received: field of the envelope
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rather than Date: field) with your sendmail logs and see what host was
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using your sendmail at this moment of time.
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Thank you."
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"This is the text that `uce-reply-to-uce' command will put in reply buffer.
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Some of spamming programs in use will be set up to read all incoming
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to spam address email, and will remove people who put the word `remove'
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on beginning of some line from the spamming list. So, when you set it
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up, it might be a good idea to actually use this feature.
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Value nil means insert no text by default, lets you type it in."
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:type 'string
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:group 'uce)
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(defcustom uce-uce-separator
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"----- original unsolicited commercial email follows -----"
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"Line that will begin quoting of the UCE.
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Value nil means use no separator."
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:type '(choice (const nil) string)
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:group 'uce)
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(defcustom uce-signature mail-signature
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"Text to put as your signature after the note to UCE sender.
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Value nil means none, t means insert `~/.signature' file (if it happens
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to exist), if this variable is a string this string will be inserted
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as your signature."
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:type '(choice (const nil) (const t) string)
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:group 'uce)
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(defcustom uce-default-headers
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"Errors-To: nobody@localhost\nPrecedence: bulk\n"
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"Additional headers to use when responding to a UCE with \\[uce-reply-to-uce].
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These are mostly meant for headers that prevent delivery errors reporting."
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:type 'string
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:group 'uce)
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(defcustom uce-subject-line
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"Spam alert: unsolicited commercial e-mail"
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"Subject of the message that will be sent in response to a UCE."
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:type 'string
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:group 'uce)
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(defun uce-reply-to-uce (&optional ignored)
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"Send reply to UCE in Rmail.
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UCE stands for unsolicited commercial email. Function will set up reply
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buffer with default To: to the sender, his postmaster, his abuse@
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address, and postmaster of the mail relay used."
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(interactive)
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(let ((message-buffer
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(cond ((eq uce-mail-reader 'gnus) gnus-original-article-buffer)
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((eq uce-mail-reader 'rmail) "RMAIL")
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(t (error
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"Variable uce-mail-reader set to unrecognized value")))))
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(or (get-buffer message-buffer)
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(error (concat "No buffer " message-buffer ", cannot find UCE")))
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(switch-to-buffer message-buffer)
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(let ((to (mail-strip-quoted-names (mail-fetch-field "from" t)))
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(reply-to (mail-fetch-field "reply-to"))
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temp)
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;; Initial setting of the list of recipients of our message; that's
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;; what they are pretending to be.
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(if to
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(setq to (format "%s" (mail-strip-quoted-names to)))
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(setq to ""))
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(if reply-to
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(setq to (format "%s, %s" to (mail-strip-quoted-names reply-to))))
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(let (first-at-sign end-of-hostname sender-host)
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(setq first-at-sign (string-match "@" to)
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end-of-hostname (string-match "[ ,>]" to first-at-sign)
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sender-host (substring to first-at-sign end-of-hostname))
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(if (string-match "\\." sender-host)
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(setq to (format "%s, postmaster%s, abuse%s"
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to sender-host sender-host))))
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(setq mail-send-actions nil)
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(setq mail-reply-buffer nil)
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(cond ((eq uce-mail-reader 'gnus)
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(copy-region-as-kill (point-min) (point-max)))
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((eq uce-mail-reader 'rmail)
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(save-excursion
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(save-restriction
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(widen)
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(rmail-maybe-set-message-counters)
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(copy-region-as-kill (rmail-msgbeg rmail-current-message)
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(rmail-msgend rmail-current-message))))))
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(switch-to-buffer "*mail*")
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(erase-buffer)
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(setq temp (point))
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(yank)
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(goto-char temp)
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(if (eq uce-mail-reader 'rmail)
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(progn
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(forward-line 2)
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(let ((case-fold-search t))
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(while (looking-at "Summary-Line:\\|Mail-From:")
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(forward-line 1)))
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(delete-region temp (point))))
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;; Now find the mail hub that first accepted this message.
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;; This should try to find the last Received: header.
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;; Sometimes there may be other headers inbetween Received: headers.
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(cond ((eq uce-mail-reader 'gnus)
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;; Does Gnus always have Lines: in the end?
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(re-search-forward "^Lines:")
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(beginning-of-line))
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((eq uce-mail-reader 'rmail)
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(beginning-of-buffer)
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(search-forward "*** EOOH ***\n")
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(beginning-of-line)
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(forward-line -1)))
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(re-search-backward "^Received:")
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(beginning-of-line)
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;; Is this always good? It's the only thing I saw when I checked
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;; a few messages.
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(let ((eol (save-excursion (end-of-line) (point))))
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;;(if (not (re-search-forward ": \\(from\\|by\\) " eol t))
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(if (not (re-search-forward "\\(from\\|by\\) " eol t))
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(progn
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(goto-char eol)
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(if (looking-at "[ \t\n]+\\(from\\|by\\) ")
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(goto-char (match-end 0))
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(error "Failed to extract hub address")))))
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(setq temp (point))
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(search-forward " ")
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(forward-char -1)
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;; And add its postmaster to the list of addresses.
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(if (string-match "\\." (buffer-substring temp (point)))
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(setq to (format "%s, postmaster@%s"
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to (buffer-substring temp (point)))))
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;; Also look at the message-id, it helps *very* often.
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(if (and (search-forward "\nMessage-Id: " nil t)
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;; Not all Message-Id:'s have an `@' sign.
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(let ((bol (point))
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eol)
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(end-of-line)
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(setq eol (point))
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(goto-char bol)
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(search-forward "@" eol t)))
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(progn
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(setq temp (point))
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(search-forward ">")
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(forward-char -1)
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(if (string-match "\\." (buffer-substring temp (point)))
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(setq to (format "%s, postmaster@%s"
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to (buffer-substring temp (point)))))))
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(cond ((eq uce-mail-reader 'gnus)
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;; Does Gnus always have Lines: in the end?
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(re-search-forward "^Lines:")
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(beginning-of-line))
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((eq uce-mail-reader 'rmail)
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(search-forward "\n*** EOOH ***\n")
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(forward-line -1)))
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(setq temp (point))
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(search-forward "\n\n" nil t)
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(if (eq uce-mail-reader 'gnus)
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(forward-line -1))
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(delete-region temp (point))
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;; End of Rmail dependent section.
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(auto-save-mode auto-save-default)
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(mail-mode)
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(goto-char (point-min))
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(insert "To: ")
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(save-excursion
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(if to
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(let ((fill-prefix "\t")
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(address-start (point)))
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(insert to "\n")
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(fill-region-as-paragraph address-start (point)))
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(newline))
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(insert "Subject: " uce-subject-line "\n")
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(if uce-default-headers
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(insert uce-default-headers))
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(if mail-default-headers
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(insert mail-default-headers))
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(if mail-default-reply-to
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(insert "Reply-to: " mail-default-reply-to "\n"))
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(insert mail-header-separator "\n")
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;; Insert all our text. Then go back to the place where we started.
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(if to (setq to (point)))
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;; Text of ranting.
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(if uce-message-text
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(insert uce-message-text))
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;; Signature.
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(cond ((eq uce-signature t)
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(if (file-exists-p "~/.signature")
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(progn
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(insert "\n\n-- \n")
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(insert-file "~/.signature")
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;; Function insert-file leaves point where it was,
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;; while we want to place signature in the ``middle''
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;; of the message.
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(exchange-point-and-mark))))
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(uce-signature
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(insert "\n\n-- \n" uce-signature)))
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;; And text of the original message.
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(if uce-uce-separator
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(insert "\n\n" uce-uce-separator "\n"))
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;; If message doesn't end with a newline, insert it.
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(goto-char (point-max))
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(or (bolp) (newline)))
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;; And go back to the beginning of text.
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(if to (goto-char to))
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(or to (set-buffer-modified-p nil))
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;; Run hooks before we leave buffer for editing. Reasonable usage
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;; might be to set up special key bindings, replace standart
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;; functions in mail-mode, etc.
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(run-hooks 'mail-setup-hook 'uce-setup-hook))))
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(defun uce-insert-ranting (&optional ignored)
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"Insert text of the usual reply to UCE into current buffer."
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(interactive "P")
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(insert uce-message-text))
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(provide 'uce)
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;;; uce.el ends here
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