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1023 lines
38 KiB
EmacsLisp
1023 lines
38 KiB
EmacsLisp
;;; smtpmail.el --- simple SMTP protocol (RFC 821) for sending mail
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;; Copyright (C) 1995-1996, 2001-2011 Free Software Foundation, Inc.
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;; Author: Tomoji Kagatani <kagatani@rbc.ncl.omron.co.jp>
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;; Maintainer: Simon Josefsson <simon@josefsson.org>
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;; w32 Maintainer: Brian D. Carlstrom <bdc@ai.mit.edu>
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;; ESMTP support: Simon Leinen <simon@switch.ch>
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;; Hacked by Mike Taylor, 11th October 1999 to add support for
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;; automatically appending a domain to RCPT TO: addresses.
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;; AUTH=LOGIN support: Stephen Cranefield <scranefield@infoscience.otago.ac.nz>
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;; Keywords: mail
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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 3 of the License, or
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;; (at your option) 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. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Send Mail to smtp host from smtpmail temp buffer.
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;; Please add these lines in your .emacs(_emacs) or use customize.
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;;
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;;(setq send-mail-function 'smtpmail-send-it) ; if you use `mail'
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;;(setq message-send-mail-function 'smtpmail-send-it) ; if you use message/Gnus
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;;(setq smtpmail-default-smtp-server "YOUR SMTP HOST")
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;;(setq smtpmail-local-domain "YOUR DOMAIN NAME")
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;;(setq smtpmail-sendto-domain "YOUR DOMAIN NAME")
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;;(setq smtpmail-debug-info t) ; only to debug problems
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;;(setq smtpmail-auth-credentials ; or use ~/.authinfo
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;; '(("YOUR SMTP HOST" 25 "username" "password")))
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;;(setq smtpmail-starttls-credentials
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;; '(("YOUR SMTP HOST" 25 "~/.my_smtp_tls.key" "~/.my_smtp_tls.cert")))
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;; Where the 25 equals the value of `smtpmail-smtp-service', it can be an
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;; integer or a string, just as long as they match (eq).
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;; To queue mail, set `smtpmail-queue-mail' to t and use
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;; `smtpmail-send-queued-mail' to send.
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;; Modified by Stephen Cranefield <scranefield@infoscience.otago.ac.nz>,
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;; 22/6/99, to support SMTP Authentication by the AUTH=LOGIN mechanism.
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;; See http://help.netscape.com/products/server/messaging/3x/info/smtpauth.html
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;; Rewritten by Simon Josefsson to use same credential variable as AUTH
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;; support below.
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;; Modified by Simon Josefsson <jas@pdc.kth.se>, 22/2/99, to support SMTP
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;; Authentication by the AUTH mechanism.
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;; See http://www.ietf.org/rfc/rfc2554.txt
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;; Modified by Simon Josefsson <simon@josefsson.org>, 2000-10-07, to support
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;; STARTTLS. Requires external program
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;; ftp://ftp.opaopa.org/pub/elisp/starttls-*.tar.gz.
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;; See http://www.ietf.org/rfc/rfc2246.txt, http://www.ietf.org/rfc/rfc2487.txt
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;;; Code:
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(require 'sendmail)
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(autoload 'starttls-any-program-available "starttls")
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(autoload 'starttls-open-stream "starttls")
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(autoload 'starttls-negotiate "starttls")
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(autoload 'mail-strip-quoted-names "mail-utils")
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(autoload 'message-make-date "message")
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(autoload 'message-make-message-id "message")
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(autoload 'rfc2104-hash "rfc2104")
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(autoload 'netrc-parse "netrc")
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(autoload 'netrc-machine "netrc")
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(autoload 'netrc-get "netrc")
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(autoload 'password-read "password-cache")
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(autoload 'auth-source-search "auth-source")
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;;;
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(defgroup smtpmail nil
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"SMTP protocol for sending mail."
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:group 'mail)
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(defcustom smtpmail-default-smtp-server nil
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"Specify default SMTP server.
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This only has effect if you specify it before loading the smtpmail library."
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:type '(choice (const nil) string)
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:group 'smtpmail)
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(defcustom smtpmail-smtp-server
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(or (getenv "SMTPSERVER") smtpmail-default-smtp-server)
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"The name of the host running SMTP server."
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:type '(choice (const nil) string)
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:group 'smtpmail)
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(defcustom smtpmail-smtp-service 25
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"SMTP service port number.
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The default value would be \"smtp\" or 25."
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:type '(choice (integer :tag "Port") (string :tag "Service"))
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:group 'smtpmail)
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(defcustom smtpmail-local-domain nil
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"Local domain name without a host name.
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If the function `system-name' returns the full internet address,
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don't define this value."
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:type '(choice (const nil) string)
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:group 'smtpmail)
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(defcustom smtpmail-sendto-domain nil
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"Local domain name without a host name.
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This is appended (with an @-sign) to any specified recipients which do
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not include an @-sign, so that each RCPT TO address is fully qualified.
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\(Some configurations of sendmail require this.)
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Don't bother to set this unless you have get an error like:
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Sending failed; SMTP protocol error
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when sending mail, and the *trace of SMTP session to <somewhere>*
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buffer includes an exchange like:
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RCPT TO: <someone>
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501 <someone>: recipient address must contain a domain."
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:type '(choice (const nil) string)
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:group 'smtpmail)
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(defcustom smtpmail-debug-info nil
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"Whether to print info in buffer *trace of SMTP session to <somewhere>*.
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See also `smtpmail-debug-verb' which determines if the SMTP protocol should
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be verbose as well."
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:type 'boolean
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:group 'smtpmail)
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(defcustom smtpmail-debug-verb nil
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"Whether this library sends the SMTP VERB command or not.
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The commands enables verbose information from the SMTP server."
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:type 'boolean
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:group 'smtpmail)
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(defcustom smtpmail-code-conv-from nil
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"Coding system for encoding outgoing mail.
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Used for the value of `sendmail-coding-system' when
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`select-message-coding-system' is called. "
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:type 'coding-system
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:group 'smtpmail)
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(defcustom smtpmail-queue-mail nil
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"Non-nil means mail is queued; otherwise it is sent immediately.
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If queued, it is stored in the directory `smtpmail-queue-dir'
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and sent with `smtpmail-send-queued-mail'."
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:type 'boolean
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:group 'smtpmail)
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(defcustom smtpmail-queue-dir "~/Mail/queued-mail/"
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"Directory where `smtpmail.el' stores queued mail."
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:type 'directory
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:group 'smtpmail)
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(defcustom smtpmail-auth-credentials "~/.authinfo"
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"Specify username and password for servers, directly or via .netrc file.
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This variable can either be a filename pointing to a file in netrc(5)
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format, or list of four-element lists that contain, in order,
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`servername' (a string), `port' (an integer), `user' (a string) and
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`password' (a string, or nil to query the user when needed). If you
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need to enter a `realm' too, add it to the user string, so that it
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looks like `user@realm'."
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:type '(choice file
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(repeat (list (string :tag "Server")
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(integer :tag "Port")
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(string :tag "Username")
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(choice (const :tag "Query when needed" nil)
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(string :tag "Password")))))
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:version "22.1"
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:group 'smtpmail)
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(defcustom smtpmail-starttls-credentials '(("" 25 "" ""))
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"Specify STARTTLS keys and certificates for servers.
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This is a list of four-element list with `servername' (a string),
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`port' (an integer), `key' (a filename) and `certificate' (a
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filename).
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If you do not have a certificate/key pair, leave the `key' and
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`certificate' fields as `nil'. A key/certificate pair is only
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needed if you want to use X.509 client authenticated
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connections."
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:type '(repeat (list (string :tag "Server")
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(integer :tag "Port")
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(file :tag "Key")
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(file :tag "Certificate")))
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:version "21.1"
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:group 'smtpmail)
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(defcustom smtpmail-warn-about-unknown-extensions nil
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"If set, print warnings about unknown SMTP extensions.
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This is mainly useful for development purposes, to learn about
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new SMTP extensions that might be useful to support."
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:type 'boolean
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:version "21.1"
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:group 'smtpmail)
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(defcustom smtpmail-queue-index-file "index"
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"File name of queued mail index.
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This is relative to `smtpmail-queue-dir'."
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:type 'string
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:group 'smtpmail)
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;; End of customizable variables.
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(defvar smtpmail-address-buffer)
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(defvar smtpmail-recipient-address-list)
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(defvar smtpmail-queue-counter 0)
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;; Buffer-local variable.
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(defvar smtpmail-read-point)
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(defconst smtpmail-auth-supported '(cram-md5 plain login)
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"List of supported SMTP AUTH mechanisms.
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The list is in preference order.")
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(defvar smtpmail-mail-address nil
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"Value to use for envelope-from address for mail from ambient buffer.")
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;;;###autoload
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(defun smtpmail-send-it ()
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(let ((errbuf (if mail-interactive
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(generate-new-buffer " smtpmail errors")
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0))
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(tembuf (generate-new-buffer " smtpmail temp"))
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(case-fold-search nil)
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delimline
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(mailbuf (current-buffer))
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;; Examine this variable now, so that
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;; local binding in the mail buffer will take effect.
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(smtpmail-mail-address
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(or (and mail-specify-envelope-from (mail-envelope-from))
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user-mail-address))
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(smtpmail-code-conv-from
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(if enable-multibyte-characters
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(let ((sendmail-coding-system smtpmail-code-conv-from))
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(select-message-coding-system)))))
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(unwind-protect
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(with-current-buffer tembuf
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(erase-buffer)
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;; Use the same `buffer-file-coding-system' as in the mail
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;; buffer, otherwise any `write-region' invocations (e.g., in
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;; mail-do-fcc below) will annoy with asking for a suitable
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;; encoding.
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(set-buffer-file-coding-system smtpmail-code-conv-from nil t)
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(insert-buffer-substring mailbuf)
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(goto-char (point-max))
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;; require one newline at the end.
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(or (= (preceding-char) ?\n)
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(insert ?\n))
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;; Change header-delimiter to be what sendmail expects.
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(mail-sendmail-undelimit-header)
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(setq delimline (point-marker))
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;; (sendmail-synch-aliases)
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(if mail-aliases
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(expand-mail-aliases (point-min) delimline))
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(goto-char (point-min))
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;; ignore any blank lines in the header
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(while (and (re-search-forward "\n\n\n*" delimline t)
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(< (point) delimline))
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(replace-match "\n"))
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(let ((case-fold-search t))
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;; We used to process Resent-... headers here,
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;; but it was not done properly, and the job
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;; is done correctly in `smtpmail-deduce-address-list'.
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;; Don't send out a blank subject line
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(goto-char (point-min))
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(if (re-search-forward "^Subject:\\([ \t]*\n\\)+\\b" delimline t)
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(replace-match "")
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;; This one matches a Subject just before the header delimiter.
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(if (and (re-search-forward "^Subject:\\([ \t]*\n\\)+" delimline t)
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(= (match-end 0) delimline))
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(replace-match "")))
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;; Put the "From:" field in unless for some odd reason
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;; they put one in themselves.
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(goto-char (point-min))
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(if (not (re-search-forward "^From:" delimline t))
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(let* ((login smtpmail-mail-address)
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(fullname (user-full-name)))
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(cond ((eq mail-from-style 'angles)
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(insert "From: " fullname)
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(let ((fullname-start (+ (point-min) 6))
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(fullname-end (point-marker)))
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(goto-char fullname-start)
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;; Look for a character that cannot appear unquoted
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;; according to RFC 822.
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(if (re-search-forward "[^- !#-'*+/-9=?A-Z^-~]"
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fullname-end 1)
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(progn
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;; Quote fullname, escaping specials.
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(goto-char fullname-start)
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(insert "\"")
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(while (re-search-forward "[\"\\]"
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fullname-end 1)
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(replace-match "\\\\\\&" t))
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(insert "\""))))
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(insert " <" login ">\n"))
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((eq mail-from-style 'parens)
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(insert "From: " login " (")
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(let ((fullname-start (point)))
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(insert fullname)
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(let ((fullname-end (point-marker)))
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(goto-char fullname-start)
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;; RFC 822 says \ and nonmatching parentheses
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;; must be escaped in comments.
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;; Escape every instance of ()\ ...
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(while (re-search-forward "[()\\]" fullname-end 1)
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(replace-match "\\\\\\&" t))
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;; ... then undo escaping of matching parentheses,
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;; including matching nested parentheses.
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(goto-char fullname-start)
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(while (re-search-forward
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"\\(\\=\\|[^\\]\\(\\\\\\\\\\)*\\)\\\\(\\(\\([^\\]\\|\\\\\\\\\\)*\\)\\\\)"
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fullname-end 1)
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(replace-match "\\1(\\3)" t)
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(goto-char fullname-start))))
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(insert ")\n"))
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((null mail-from-style)
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(insert "From: " login "\n")))))
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;; Insert a `Message-Id:' field if there isn't one yet.
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(goto-char (point-min))
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(unless (re-search-forward "^Message-Id:" delimline t)
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(insert "Message-Id: " (message-make-message-id) "\n"))
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;; Insert a `Date:' field if there isn't one yet.
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(goto-char (point-min))
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(unless (re-search-forward "^Date:" delimline t)
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(insert "Date: " (message-make-date) "\n"))
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;; Possibly add a MIME header for the current coding system
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(let (charset)
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(goto-char (point-min))
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(and (eq mail-send-nonascii 'mime)
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(not (re-search-forward "^MIME-version:" delimline t))
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(progn (skip-chars-forward "\0-\177")
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(/= (point) (point-max)))
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smtpmail-code-conv-from
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(setq charset
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(coding-system-get smtpmail-code-conv-from
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'mime-charset))
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(goto-char delimline)
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(insert "MIME-version: 1.0\n"
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"Content-type: text/plain; charset="
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(symbol-name charset)
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"\nContent-Transfer-Encoding: 8bit\n")))
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;; Insert an extra newline if we need it to work around
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;; Sun's bug that swallows newlines.
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(goto-char (1+ delimline))
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(if (eval mail-mailer-swallows-blank-line)
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(newline))
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;; Find and handle any FCC fields.
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(goto-char (point-min))
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(if (re-search-forward "^FCC:" delimline t)
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;; Force `mail-do-fcc' to use the encoding of the mail
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;; buffer to encode outgoing messages on FCC files.
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(let ((coding-system-for-write smtpmail-code-conv-from))
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(mail-do-fcc delimline)))
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(if mail-interactive
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(with-current-buffer errbuf
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(erase-buffer))))
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;; Encode the header according to RFC2047.
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(mail-encode-header (point-min) delimline)
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;;
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(setq smtpmail-address-buffer (generate-new-buffer "*smtp-mail*"))
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(setq smtpmail-recipient-address-list
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(smtpmail-deduce-address-list tembuf (point-min) delimline))
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(kill-buffer smtpmail-address-buffer)
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(smtpmail-do-bcc delimline)
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;; Send or queue
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(if (not smtpmail-queue-mail)
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(if (not (null smtpmail-recipient-address-list))
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(if (not (smtpmail-via-smtp
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smtpmail-recipient-address-list tembuf))
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(error "Sending failed; SMTP protocol error"))
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(error "Sending failed; no recipients"))
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(let* ((file-data
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(expand-file-name
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(format "%s_%i"
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(format-time-string "%Y-%m-%d_%H:%M:%S")
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(setq smtpmail-queue-counter
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(1+ smtpmail-queue-counter)))
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smtpmail-queue-dir))
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(file-data (convert-standard-filename file-data))
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(file-elisp (concat file-data ".el"))
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(buffer-data (create-file-buffer file-data))
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(buffer-elisp (create-file-buffer file-elisp))
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(buffer-scratch "*queue-mail*"))
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(unless (file-exists-p smtpmail-queue-dir)
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(make-directory smtpmail-queue-dir t))
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(with-current-buffer buffer-data
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(erase-buffer)
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(set-buffer-file-coding-system
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;; We will be reading the file with no-conversion in
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;; smtpmail-send-queued-mail below, so write it out
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;; with Unix EOLs.
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(coding-system-change-eol-conversion
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(or smtpmail-code-conv-from 'undecided)
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'unix)
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nil t)
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(insert-buffer-substring tembuf)
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(write-file file-data)
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(set-buffer buffer-elisp)
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(erase-buffer)
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(insert (concat
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"(setq smtpmail-recipient-address-list '"
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(prin1-to-string smtpmail-recipient-address-list)
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")\n"))
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(write-file file-elisp)
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(set-buffer (generate-new-buffer buffer-scratch))
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(insert (concat file-data "\n"))
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(append-to-file (point-min)
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(point-max)
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(expand-file-name smtpmail-queue-index-file
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smtpmail-queue-dir)))
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(kill-buffer buffer-scratch)
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(kill-buffer buffer-data)
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(kill-buffer buffer-elisp))))
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(kill-buffer tembuf)
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(if (bufferp errbuf)
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(kill-buffer errbuf)))))
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;;;###autoload
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(defun smtpmail-send-queued-mail ()
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"Send mail that was queued as a result of setting `smtpmail-queue-mail'."
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(interactive)
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(with-temp-buffer
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;; Get index, get first mail, send it, update index, get second
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;; mail, send it, etc...
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(let ((file-msg "")
|
|
(qfile (expand-file-name smtpmail-queue-index-file
|
|
smtpmail-queue-dir)))
|
|
(insert-file-contents qfile)
|
|
(goto-char (point-min))
|
|
(while (not (eobp))
|
|
(setq file-msg (buffer-substring (point) (line-end-position)))
|
|
(load file-msg)
|
|
;; Insert the message literally: it is already encoded as per
|
|
;; the MIME headers, and code conversions might guess the
|
|
;; encoding wrongly.
|
|
(with-temp-buffer
|
|
(let ((coding-system-for-read 'no-conversion))
|
|
(insert-file-contents file-msg))
|
|
(let ((smtpmail-mail-address
|
|
(or (and mail-specify-envelope-from (mail-envelope-from))
|
|
user-mail-address)))
|
|
(if (not (null smtpmail-recipient-address-list))
|
|
(if (not (smtpmail-via-smtp smtpmail-recipient-address-list
|
|
(current-buffer)))
|
|
(error "Sending failed; SMTP protocol error"))
|
|
(error "Sending failed; no recipients"))))
|
|
(delete-file file-msg)
|
|
(delete-file (concat file-msg ".el"))
|
|
(delete-region (point-at-bol) (point-at-bol 2)))
|
|
(write-region (point-min) (point-max) qfile))))
|
|
|
|
;; (defun smtpmail-via-smtp (host,port,sender,destination,smtpmail-text-buffer)
|
|
|
|
(defun smtpmail-fqdn ()
|
|
(if smtpmail-local-domain
|
|
(concat (system-name) "." smtpmail-local-domain)
|
|
(system-name)))
|
|
|
|
(defsubst smtpmail-cred-server (cred)
|
|
(nth 0 cred))
|
|
|
|
(defsubst smtpmail-cred-port (cred)
|
|
(nth 1 cred))
|
|
|
|
(defsubst smtpmail-cred-key (cred)
|
|
(nth 2 cred))
|
|
|
|
(defsubst smtpmail-cred-user (cred)
|
|
(nth 2 cred))
|
|
|
|
(defsubst smtpmail-cred-cert (cred)
|
|
(nth 3 cred))
|
|
|
|
(defsubst smtpmail-cred-passwd (cred)
|
|
(nth 3 cred))
|
|
|
|
(defun smtpmail-find-credentials (cred server port)
|
|
(catch 'done
|
|
(let ((l cred) el)
|
|
(while (setq el (pop l))
|
|
(when (and (equal server (smtpmail-cred-server el))
|
|
(equal port (smtpmail-cred-port el)))
|
|
(throw 'done el))))))
|
|
|
|
(defun smtpmail-maybe-append-domain (recipient)
|
|
(if (or (not smtpmail-sendto-domain)
|
|
(string-match "@" recipient))
|
|
recipient
|
|
(concat recipient "@" smtpmail-sendto-domain)))
|
|
|
|
(defun smtpmail-intersection (list1 list2)
|
|
(let ((result nil))
|
|
(dolist (el2 list2)
|
|
(when (memq el2 list1)
|
|
(push el2 result)))
|
|
(nreverse result)))
|
|
|
|
(defvar starttls-extra-args)
|
|
(defvar starttls-extra-arguments)
|
|
|
|
(defun smtpmail-open-stream (process-buffer host port)
|
|
(let ((cred (smtpmail-find-credentials
|
|
smtpmail-starttls-credentials host port)))
|
|
(if (null (and cred (starttls-any-program-available)))
|
|
;; The normal case.
|
|
(open-network-stream "SMTP" process-buffer host port)
|
|
(let* ((cred-key (smtpmail-cred-key cred))
|
|
(cred-cert (smtpmail-cred-cert cred))
|
|
(starttls-extra-args
|
|
(append
|
|
starttls-extra-args
|
|
(when (and (stringp cred-key) (stringp cred-cert)
|
|
(file-regular-p
|
|
(setq cred-key (expand-file-name cred-key)))
|
|
(file-regular-p
|
|
(setq cred-cert (expand-file-name cred-cert))))
|
|
(list "--key-file" cred-key "--cert-file" cred-cert))))
|
|
(starttls-extra-arguments
|
|
(append
|
|
starttls-extra-arguments
|
|
(when (and (stringp cred-key) (stringp cred-cert)
|
|
(file-regular-p
|
|
(setq cred-key (expand-file-name cred-key)))
|
|
(file-regular-p
|
|
(setq cred-cert (expand-file-name cred-cert))))
|
|
(list "--x509keyfile" cred-key "--x509certfile" cred-cert)))))
|
|
(starttls-open-stream "SMTP" process-buffer host port)))))
|
|
|
|
;; `password-read' autoloads password-cache.
|
|
(declare-function password-cache-add "password-cache" (key password))
|
|
|
|
(defun smtpmail-try-auth-methods (process supported-extensions host port)
|
|
(let* ((mechs (cdr-safe (assoc 'auth supported-extensions)))
|
|
(mech (car (smtpmail-intersection mechs smtpmail-auth-supported)))
|
|
(auth-info (auth-source-search :max 1
|
|
:host host
|
|
:port (or port "smtp")))
|
|
(auth-user (plist-get (nth 0 auth-info) :user))
|
|
(auth-pass (plist-get (nth 0 auth-info) :secret))
|
|
(auth-pass (if (functionp auth-pass)
|
|
(funcall auth-pass)
|
|
auth-pass))
|
|
(cred (if (and auth-user auth-pass) ; try user-auth-* before netrc-*
|
|
(list host port auth-user auth-pass)
|
|
;; else, if auth-source didn't return them...
|
|
(if (stringp smtpmail-auth-credentials)
|
|
(let* ((netrc (netrc-parse smtpmail-auth-credentials))
|
|
(port-name (format "%s" (or port "smtp")))
|
|
(hostentry (netrc-machine netrc host port-name
|
|
port-name)))
|
|
(when hostentry
|
|
(list host port
|
|
(netrc-get hostentry "login")
|
|
(netrc-get hostentry "password"))))
|
|
;; else, try `smtpmail-find-credentials' since
|
|
;; `smtpmail-auth-credentials' is not a string
|
|
(smtpmail-find-credentials
|
|
smtpmail-auth-credentials host port))))
|
|
(prompt (when cred (format "SMTP password for %s:%s: "
|
|
(smtpmail-cred-server cred)
|
|
(smtpmail-cred-port cred))))
|
|
(passwd (when cred
|
|
(or (smtpmail-cred-passwd cred)
|
|
(password-read prompt prompt))))
|
|
ret)
|
|
(when (and cred mech)
|
|
(cond
|
|
((eq mech 'cram-md5)
|
|
(smtpmail-send-command process (upcase (format "AUTH %s" mech)))
|
|
(if (or (null (car (setq ret (smtpmail-read-response process))))
|
|
(not (integerp (car ret)))
|
|
(>= (car ret) 400))
|
|
(throw 'done nil))
|
|
(when (eq (car ret) 334)
|
|
(let* ((challenge (substring (cadr ret) 4))
|
|
(decoded (base64-decode-string challenge))
|
|
(hash (rfc2104-hash 'md5 64 16 passwd decoded))
|
|
(response (concat (smtpmail-cred-user cred) " " hash))
|
|
;; Osamu Yamane <yamane@green.ocn.ne.jp>:
|
|
;; SMTP auth fails because the SMTP server identifies
|
|
;; only the first part of the string (delimited by
|
|
;; new line characters) as a response from the
|
|
;; client, and the rest as distinct commands.
|
|
|
|
;; In my case, the response string is 80 characters
|
|
;; long. Without the no-line-break option for
|
|
;; `base64-encode-string', only the first 76 characters
|
|
;; are taken as a response to the server, and the
|
|
;; authentication fails.
|
|
(encoded (base64-encode-string response t)))
|
|
(smtpmail-send-command process (format "%s" encoded))
|
|
(if (or (null (car (setq ret (smtpmail-read-response process))))
|
|
(not (integerp (car ret)))
|
|
(>= (car ret) 400))
|
|
(throw 'done nil)))))
|
|
((eq mech 'login)
|
|
(smtpmail-send-command process "AUTH LOGIN")
|
|
(if (or (null (car (setq ret (smtpmail-read-response process))))
|
|
(not (integerp (car ret)))
|
|
(>= (car ret) 400))
|
|
(throw 'done nil))
|
|
(smtpmail-send-command
|
|
process (base64-encode-string (smtpmail-cred-user cred) t))
|
|
(if (or (null (car (setq ret (smtpmail-read-response process))))
|
|
(not (integerp (car ret)))
|
|
(>= (car ret) 400))
|
|
(throw 'done nil))
|
|
(smtpmail-send-command process (base64-encode-string passwd t))
|
|
(if (or (null (car (setq ret (smtpmail-read-response process))))
|
|
(not (integerp (car ret)))
|
|
(>= (car ret) 400))
|
|
(throw 'done nil)))
|
|
((eq mech 'plain)
|
|
;; We used to send an empty initial request, and wait for an
|
|
;; empty response, and then send the password, but this
|
|
;; violate a SHOULD in RFC 2222 paragraph 5.1. Note that this
|
|
;; is not sent if the server did not advertise AUTH PLAIN in
|
|
;; the EHLO response. See RFC 2554 for more info.
|
|
(smtpmail-send-command process
|
|
(concat "AUTH PLAIN "
|
|
(base64-encode-string
|
|
(concat "\0"
|
|
(smtpmail-cred-user cred)
|
|
"\0"
|
|
passwd) t)))
|
|
(if (or (null (car (setq ret (smtpmail-read-response process))))
|
|
(not (integerp (car ret)))
|
|
(not (equal (car ret) 235)))
|
|
(throw 'done nil)))
|
|
|
|
(t
|
|
(error "Mechanism %s not implemented" mech)))
|
|
;; Remember the password.
|
|
(when (null (smtpmail-cred-passwd cred))
|
|
(password-cache-add prompt passwd)))))
|
|
|
|
(defun smtpmail-via-smtp (recipient smtpmail-text-buffer)
|
|
(let ((process nil)
|
|
(host (or smtpmail-smtp-server
|
|
(error "`smtpmail-smtp-server' not defined")))
|
|
(port smtpmail-smtp-service)
|
|
;; `smtpmail-mail-address' should be set to the appropriate
|
|
;; buffer-local value by the caller, but in case not:
|
|
(envelope-from (or smtpmail-mail-address
|
|
(and mail-specify-envelope-from
|
|
(mail-envelope-from))
|
|
user-mail-address))
|
|
response-code
|
|
greeting
|
|
process-buffer
|
|
(supported-extensions '()))
|
|
(unwind-protect
|
|
(catch 'done
|
|
;; get or create the trace buffer
|
|
(setq process-buffer
|
|
(get-buffer-create (format "*trace of SMTP session to %s*" host)))
|
|
|
|
;; clear the trace buffer of old output
|
|
(with-current-buffer process-buffer
|
|
(setq buffer-undo-list t)
|
|
(erase-buffer))
|
|
|
|
;; open the connection to the server
|
|
(setq process (smtpmail-open-stream process-buffer host port))
|
|
(and (null process) (throw 'done nil))
|
|
|
|
;; set the send-filter
|
|
(set-process-filter process 'smtpmail-process-filter)
|
|
|
|
(with-current-buffer process-buffer
|
|
(set-buffer-process-coding-system 'raw-text-unix 'raw-text-unix)
|
|
(make-local-variable 'smtpmail-read-point)
|
|
(setq smtpmail-read-point (point-min))
|
|
|
|
|
|
(if (or (null (car (setq greeting (smtpmail-read-response process))))
|
|
(not (integerp (car greeting)))
|
|
(>= (car greeting) 400))
|
|
(throw 'done nil))
|
|
|
|
(let ((do-ehlo t)
|
|
(do-starttls t))
|
|
(while do-ehlo
|
|
;; EHLO
|
|
(smtpmail-send-command process (format "EHLO %s" (smtpmail-fqdn)))
|
|
|
|
(if (or (null (car (setq response-code
|
|
(smtpmail-read-response process))))
|
|
(not (integerp (car response-code)))
|
|
(>= (car response-code) 400))
|
|
(progn
|
|
;; HELO
|
|
(smtpmail-send-command
|
|
process (format "HELO %s" (smtpmail-fqdn)))
|
|
|
|
(if (or (null (car (setq response-code
|
|
(smtpmail-read-response process))))
|
|
(not (integerp (car response-code)))
|
|
(>= (car response-code) 400))
|
|
(throw 'done nil)))
|
|
(dolist (line (cdr (cdr response-code)))
|
|
(let ((name
|
|
(with-case-table ascii-case-table
|
|
(mapcar (lambda (s) (intern (downcase s)))
|
|
(split-string (substring line 4) "[ ]")))))
|
|
(and (eq (length name) 1)
|
|
(setq name (car name)))
|
|
(and name
|
|
(cond ((memq (if (consp name) (car name) name)
|
|
'(verb xvrb 8bitmime onex xone
|
|
expn size dsn etrn
|
|
enhancedstatuscodes
|
|
help xusr
|
|
auth=login auth starttls))
|
|
(setq supported-extensions
|
|
(cons name supported-extensions)))
|
|
(smtpmail-warn-about-unknown-extensions
|
|
(message "Unknown extension %s" name)))))))
|
|
|
|
(if (and do-starttls
|
|
(smtpmail-find-credentials smtpmail-starttls-credentials host port)
|
|
(member 'starttls supported-extensions)
|
|
(numberp (process-id process)))
|
|
(progn
|
|
(smtpmail-send-command process (format "STARTTLS"))
|
|
(if (or (null (car (setq response-code (smtpmail-read-response process))))
|
|
(not (integerp (car response-code)))
|
|
(>= (car response-code) 400))
|
|
(throw 'done nil))
|
|
(starttls-negotiate process)
|
|
(setq do-starttls nil))
|
|
(setq do-ehlo nil))))
|
|
|
|
(smtpmail-try-auth-methods process supported-extensions host port)
|
|
|
|
(if (or (member 'onex supported-extensions)
|
|
(member 'xone supported-extensions))
|
|
(progn
|
|
(smtpmail-send-command process (format "ONEX"))
|
|
(if (or (null (car (setq response-code (smtpmail-read-response process))))
|
|
(not (integerp (car response-code)))
|
|
(>= (car response-code) 400))
|
|
(throw 'done nil))))
|
|
|
|
(if (and smtpmail-debug-verb
|
|
(or (member 'verb supported-extensions)
|
|
(member 'xvrb supported-extensions)))
|
|
(progn
|
|
(smtpmail-send-command process (format "VERB"))
|
|
(if (or (null (car (setq response-code (smtpmail-read-response process))))
|
|
(not (integerp (car response-code)))
|
|
(>= (car response-code) 400))
|
|
(throw 'done nil))))
|
|
|
|
(if (member 'xusr supported-extensions)
|
|
(progn
|
|
(smtpmail-send-command process (format "XUSR"))
|
|
(if (or (null (car (setq response-code (smtpmail-read-response process))))
|
|
(not (integerp (car response-code)))
|
|
(>= (car response-code) 400))
|
|
(throw 'done nil))))
|
|
|
|
;; MAIL FROM:<sender>
|
|
(let ((size-part
|
|
(if (or (member 'size supported-extensions)
|
|
(assoc 'size supported-extensions))
|
|
(format " SIZE=%d"
|
|
(with-current-buffer smtpmail-text-buffer
|
|
;; size estimate:
|
|
(+ (- (point-max) (point-min))
|
|
;; Add one byte for each change-of-line
|
|
;; because of CR-LF representation:
|
|
(count-lines (point-min) (point-max)))))
|
|
""))
|
|
(body-part
|
|
(if (member '8bitmime supported-extensions)
|
|
;; FIXME:
|
|
;; Code should be added here that transforms
|
|
;; the contents of the message buffer into
|
|
;; something the receiving SMTP can handle.
|
|
;; For a receiver that supports 8BITMIME, this
|
|
;; may mean converting BINARY to BASE64, or
|
|
;; adding Content-Transfer-Encoding and the
|
|
;; other MIME headers. The code should also
|
|
;; return an indication of what encoding the
|
|
;; message buffer is now, i.e. ASCII or
|
|
;; 8BITMIME.
|
|
(if nil
|
|
" BODY=8BITMIME"
|
|
"")
|
|
"")))
|
|
;; (smtpmail-send-command process (format "MAIL FROM:%s@%s" (user-login-name) (smtpmail-fqdn)))
|
|
(smtpmail-send-command process (format "MAIL FROM:<%s>%s%s"
|
|
envelope-from
|
|
size-part
|
|
body-part))
|
|
|
|
(if (or (null (car (setq response-code (smtpmail-read-response process))))
|
|
(not (integerp (car response-code)))
|
|
(>= (car response-code) 400))
|
|
(throw 'done nil)))
|
|
|
|
;; RCPT TO:<recipient>
|
|
(let ((n 0))
|
|
(while (not (null (nth n recipient)))
|
|
(smtpmail-send-command process (format "RCPT TO:<%s>" (smtpmail-maybe-append-domain (nth n recipient))))
|
|
(setq n (1+ n))
|
|
|
|
(setq response-code (smtpmail-read-response process))
|
|
(if (or (null (car response-code))
|
|
(not (integerp (car response-code)))
|
|
(>= (car response-code) 400))
|
|
(throw 'done nil))))
|
|
|
|
;; DATA
|
|
(smtpmail-send-command process "DATA")
|
|
|
|
(if (or (null (car (setq response-code (smtpmail-read-response process))))
|
|
(not (integerp (car response-code)))
|
|
(>= (car response-code) 400))
|
|
(throw 'done nil))
|
|
|
|
;; Mail contents
|
|
(smtpmail-send-data process smtpmail-text-buffer)
|
|
|
|
;; DATA end "."
|
|
(smtpmail-send-command process ".")
|
|
|
|
(if (or (null (car (setq response-code (smtpmail-read-response process))))
|
|
(not (integerp (car response-code)))
|
|
(>= (car response-code) 400))
|
|
(throw 'done nil))
|
|
|
|
;; QUIT
|
|
;; (smtpmail-send-command process "QUIT")
|
|
;; (and (null (car (smtpmail-read-response process)))
|
|
;; (throw 'done nil))
|
|
t))
|
|
(if process
|
|
(with-current-buffer (process-buffer process)
|
|
(smtpmail-send-command process "QUIT")
|
|
(smtpmail-read-response process)
|
|
|
|
;; (if (or (null (car (setq response-code (smtpmail-read-response process))))
|
|
;; (not (integerp (car response-code)))
|
|
;; (>= (car response-code) 400))
|
|
;; (throw 'done nil))
|
|
(delete-process process)
|
|
(unless smtpmail-debug-info
|
|
(kill-buffer process-buffer)))))))
|
|
|
|
|
|
(defun smtpmail-process-filter (process output)
|
|
(with-current-buffer (process-buffer process)
|
|
(goto-char (point-max))
|
|
(insert output)))
|
|
|
|
(defun smtpmail-read-response (process)
|
|
(let ((case-fold-search nil)
|
|
(response-strings nil)
|
|
(response-continue t)
|
|
(return-value '(nil ()))
|
|
match-end)
|
|
(catch 'done
|
|
(while response-continue
|
|
(goto-char smtpmail-read-point)
|
|
(while (not (search-forward "\r\n" nil t))
|
|
(unless (memq (process-status process) '(open run))
|
|
(throw 'done nil))
|
|
(accept-process-output process)
|
|
(goto-char smtpmail-read-point))
|
|
|
|
(setq match-end (point))
|
|
(setq response-strings
|
|
(cons (buffer-substring smtpmail-read-point (- match-end 2))
|
|
response-strings))
|
|
|
|
(goto-char smtpmail-read-point)
|
|
(if (looking-at "[0-9]+ ")
|
|
(let ((begin (match-beginning 0))
|
|
(end (match-end 0)))
|
|
(if smtpmail-debug-info
|
|
(message "%s" (car response-strings)))
|
|
|
|
(setq smtpmail-read-point match-end)
|
|
|
|
;; ignore lines that start with "0"
|
|
(if (looking-at "0[0-9]+ ")
|
|
nil
|
|
(setq response-continue nil)
|
|
(setq return-value
|
|
(cons (string-to-number
|
|
(buffer-substring begin end))
|
|
(nreverse response-strings)))))
|
|
|
|
(if (looking-at "[0-9]+-")
|
|
(progn (if smtpmail-debug-info
|
|
(message "%s" (car response-strings)))
|
|
(setq smtpmail-read-point match-end)
|
|
(setq response-continue t))
|
|
(progn
|
|
(setq smtpmail-read-point match-end)
|
|
(setq response-continue nil)
|
|
(setq return-value
|
|
(cons nil (nreverse response-strings)))))))
|
|
(setq smtpmail-read-point match-end))
|
|
return-value))
|
|
|
|
|
|
(defun smtpmail-send-command (process command)
|
|
(goto-char (point-max))
|
|
(if (= (aref command 0) ?P)
|
|
(insert "PASS <omitted>\r\n")
|
|
(insert command "\r\n"))
|
|
(setq smtpmail-read-point (point))
|
|
(process-send-string process command)
|
|
(process-send-string process "\r\n"))
|
|
|
|
(defun smtpmail-send-data-1 (process data)
|
|
(goto-char (point-max))
|
|
|
|
(if (and (multibyte-string-p data)
|
|
smtpmail-code-conv-from)
|
|
(setq data (string-as-multibyte
|
|
(encode-coding-string data smtpmail-code-conv-from))))
|
|
|
|
(if smtpmail-debug-info
|
|
(insert data "\r\n"))
|
|
|
|
(setq smtpmail-read-point (point))
|
|
;; Escape "." at start of a line
|
|
(if (eq (string-to-char data) ?.)
|
|
(process-send-string process "."))
|
|
(process-send-string process data)
|
|
(process-send-string process "\r\n"))
|
|
|
|
(defun smtpmail-send-data (process buffer)
|
|
(let ((data-continue t) sending-data)
|
|
(with-current-buffer buffer
|
|
(goto-char (point-min)))
|
|
(while data-continue
|
|
(with-current-buffer buffer
|
|
(setq sending-data (buffer-substring (point-at-bol) (point-at-eol)))
|
|
(end-of-line 2)
|
|
(setq data-continue (not (eobp))))
|
|
(smtpmail-send-data-1 process sending-data))))
|
|
|
|
(defun smtpmail-deduce-address-list (smtpmail-text-buffer header-start header-end)
|
|
"Get address list suitable for smtp RCPT TO: <address>."
|
|
(unwind-protect
|
|
(with-current-buffer smtpmail-address-buffer
|
|
(erase-buffer)
|
|
(let ((case-fold-search t)
|
|
(simple-address-list "")
|
|
this-line
|
|
this-line-end
|
|
addr-regexp)
|
|
(insert-buffer-substring smtpmail-text-buffer header-start header-end)
|
|
(goto-char (point-min))
|
|
;; RESENT-* fields should stop processing of regular fields.
|
|
(save-excursion
|
|
(setq addr-regexp
|
|
(if (re-search-forward "^Resent-\\(to\\|cc\\|bcc\\):"
|
|
header-end t)
|
|
"^Resent-\\(to\\|cc\\|bcc\\):"
|
|
"^\\(To:\\|Cc:\\|Bcc:\\)")))
|
|
|
|
(while (re-search-forward addr-regexp header-end t)
|
|
(replace-match "")
|
|
(setq this-line (match-beginning 0))
|
|
(forward-line 1)
|
|
;; get any continuation lines
|
|
(while (and (looking-at "^[ \t]+") (< (point) header-end))
|
|
(forward-line 1))
|
|
(setq this-line-end (point-marker))
|
|
(setq simple-address-list
|
|
(concat simple-address-list " "
|
|
(mail-strip-quoted-names (buffer-substring this-line this-line-end)))))
|
|
(erase-buffer)
|
|
(insert " " simple-address-list "\n")
|
|
(subst-char-in-region (point-min) (point-max) 10 ? t) ; newline --> blank
|
|
(subst-char-in-region (point-min) (point-max) ?, ? t) ; comma --> blank
|
|
(subst-char-in-region (point-min) (point-max) 9 ? t) ; tab --> blank
|
|
|
|
(goto-char (point-min))
|
|
;; tidyness in case hook is not robust when it looks at this
|
|
(while (re-search-forward "[ \t]+" header-end t) (replace-match " "))
|
|
|
|
(goto-char (point-min))
|
|
(let (recipient-address-list)
|
|
(while (re-search-forward " \\([^ ]+\\) " (point-max) t)
|
|
(backward-char 1)
|
|
(setq recipient-address-list (cons (buffer-substring (match-beginning 1) (match-end 1))
|
|
recipient-address-list)))
|
|
(setq smtpmail-recipient-address-list recipient-address-list))))))
|
|
|
|
(defun smtpmail-do-bcc (header-end)
|
|
"Delete [Resent-]BCC: and their continuation lines from the header area.
|
|
There may be multiple BCC: lines, and each may have arbitrarily
|
|
many continuation lines."
|
|
(let ((case-fold-search t))
|
|
(save-excursion
|
|
(goto-char (point-min))
|
|
;; iterate over all BCC: lines
|
|
(while (re-search-forward "^\\(RESENT-\\)?BCC:" header-end t)
|
|
(delete-region (match-beginning 0)
|
|
(progn (forward-line 1) (point)))
|
|
;; get rid of any continuation lines
|
|
(while (and (looking-at "^[ \t].*\n") (< (point) header-end))
|
|
(replace-match ""))))))
|
|
|
|
(provide 'smtpmail)
|
|
|
|
;;; smtpmail.el ends here
|