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emacs/lisp/mail/smtpmail.el
Karl Heuer 067427f540 (smtpmail-do-bcc): Fix regexp.
1999-03-09 03:02:55 +00:00

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;;; smtpmail.el --- simple SMTP protocol (RFC 821) for sending mail
;; Copyright (C) 1995, 1996 Free Software Foundation, Inc.
;; Author: Tomoji Kagatani <kagatani@rbc.ncl.omron.co.jp>
;; Maintainer: Brian D. Carlstrom <bdc@ai.mit.edu>
;; ESMTP support: Simon Leinen <simon@switch.ch>
;; Keywords: mail
;; This file is part of GNU Emacs.
;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;; Send Mail to smtp host from smtpmail temp buffer.
;; Please add these lines in your .emacs(_emacs) or use customize.
;;
;;(setq send-mail-function 'smtpmail-send-it) ; if you use `mail'
;;(setq message-send-mail-function 'smtpmail-send-it) ; if you use `message'
;;(setq smtpmail-default-smtp-server "YOUR SMTP HOST")
;;(setq smtpmail-local-domain "YOUR DOMAIN NAME")
;;(setq smtpmail-debug-info t) ; only to debug problems
;; To queue mail, set smtpmail-queue-mail to t and use
;; smtpmail-send-queued-mail to send.
;;; Code:
(require 'sendmail)
(require 'time-stamp)
;;;
(defgroup smtpmail nil
"SMTP protocol for sending mail."
:group 'mail)
(defcustom smtpmail-default-smtp-server nil
"*Specify default SMTP server."
:type '(choice (const nil) string)
:group 'smtpmail)
(defcustom smtpmail-smtp-server
(or (getenv "SMTPSERVER") smtpmail-default-smtp-server)
"*The name of the host running SMTP server."
:type '(choice (const nil) string)
:group 'smtpmail)
(defcustom smtpmail-smtp-service 25
"*SMTP service port number. smtp or 25 ."
:type 'integer
:group 'smtpmail)
(defcustom smtpmail-local-domain nil
"*Local domain name without a host name.
If the function (system-name) returns the full internet address,
don't define this value."
:type '(choice (const nil) string)
:group 'smtpmail)
(defcustom smtpmail-debug-info nil
"*smtpmail debug info printout. messages and process buffer."
:type 'boolean
:group 'smtpmail)
(defcustom smtpmail-code-conv-from nil ;; *junet*
"*smtpmail code convert from this code to *internal*..for tiny-mime.."
:type 'boolean
:group 'smtpmail)
(defcustom smtpmail-queue-mail nil
"*Specify if mail is queued (if t) or sent immediately (if nil).
If queued, it is stored in the directory `smtpmail-queue-dir'
and sent with `smtpmail-send-queued-mail'."
:type 'boolean
:group 'smtpmail)
(defcustom smtpmail-queue-dir "~/Mail/queued-mail/"
"*Directory where `smtpmail.el' stores queued mail."
:type 'directory
:group 'smtpmail)
(defvar smtpmail-queue-index-file "index"
"File name of queued mail index,
This is relative to `smtpmail-queue-dir'.")
(defvar smtpmail-address-buffer)
(defvar smtpmail-recipient-address-list)
;; Buffer-local variable.
(defvar smtpmail-read-point)
(defvar smtpmail-queue-index (concat smtpmail-queue-dir
smtpmail-queue-index-file))
;;;
;;;
;;;
;;;###autoload
(defun smtpmail-send-it ()
(require 'mail-utils)
(let ((errbuf (if mail-interactive
(generate-new-buffer " smtpmail errors")
0))
(tembuf (generate-new-buffer " smtpmail temp"))
(case-fold-search nil)
delimline
(mailbuf (current-buffer)))
(unwind-protect
(save-excursion
(set-buffer tembuf)
(erase-buffer)
(insert-buffer-substring mailbuf)
(goto-char (point-max))
;; require one newline at the end.
(or (= (preceding-char) ?\n)
(insert ?\n))
;; Change header-delimiter to be what sendmail expects.
(mail-sendmail-undelimit-header)
(setq delimline (point-marker))
;; (sendmail-synch-aliases)
(if mail-aliases
(expand-mail-aliases (point-min) delimline))
(goto-char (point-min))
;; ignore any blank lines in the header
(while (and (re-search-forward "\n\n\n*" delimline t)
(< (point) delimline))
(replace-match "\n"))
(let ((case-fold-search t))
;; We used to process Resent-... headers here,
;; but it was not done properly, and the job
;; is done correctly in smtpmail-deduce-address-list.
;; Don't send out a blank subject line
(goto-char (point-min))
(if (re-search-forward "^Subject:\\([ \t]*\n\\)+\\b" delimline t)
(replace-match "")
;; This one matches a Subject just before the header delimiter.
(if (and (re-search-forward "^Subject:\\([ \t]*\n\\)+" delimline t)
(= (match-end 0) delimline))
(replace-match "")))
;; Put the "From:" field in unless for some odd reason
;; they put one in themselves.
(goto-char (point-min))
(if (not (re-search-forward "^From:" delimline t))
(let* ((login user-mail-address)
(fullname (user-full-name)))
(cond ((eq mail-from-style 'angles)
(insert "From: " fullname)
(let ((fullname-start (+ (point-min) 6))
(fullname-end (point-marker)))
(goto-char fullname-start)
;; Look for a character that cannot appear unquoted
;; according to RFC 822.
(if (re-search-forward "[^- !#-'*+/-9=?A-Z^-~]"
fullname-end 1)
(progn
;; Quote fullname, escaping specials.
(goto-char fullname-start)
(insert "\"")
(while (re-search-forward "[\"\\]"
fullname-end 1)
(replace-match "\\\\\\&" t))
(insert "\""))))
(insert " <" login ">\n"))
((eq mail-from-style 'parens)
(insert "From: " login " (")
(let ((fullname-start (point)))
(insert fullname)
(let ((fullname-end (point-marker)))
(goto-char fullname-start)
;; RFC 822 says \ and nonmatching parentheses
;; must be escaped in comments.
;; Escape every instance of ()\ ...
(while (re-search-forward "[()\\]" fullname-end 1)
(replace-match "\\\\\\&" t))
;; ... then undo escaping of matching parentheses,
;; including matching nested parentheses.
(goto-char fullname-start)
(while (re-search-forward
"\\(\\=\\|[^\\]\\(\\\\\\\\\\)*\\)\\\\(\\(\\([^\\]\\|\\\\\\\\\\)*\\)\\\\)"
fullname-end 1)
(replace-match "\\1(\\3)" t)
(goto-char fullname-start))))
(insert ")\n"))
((null mail-from-style)
(insert "From: " login "\n")))))
;; Insert an extra newline if we need it to work around
;; Sun's bug that swallows newlines.
(goto-char (1+ delimline))
(if (eval mail-mailer-swallows-blank-line)
(newline))
;; Find and handle any FCC fields.
(goto-char (point-min))
(if (re-search-forward "^FCC:" delimline t)
(mail-do-fcc delimline))
(if mail-interactive
(save-excursion
(set-buffer errbuf)
(erase-buffer))))
;;
;;
;;
(setq smtpmail-address-buffer (generate-new-buffer "*smtp-mail*"))
(setq smtpmail-recipient-address-list
(smtpmail-deduce-address-list tembuf (point-min) delimline))
(kill-buffer smtpmail-address-buffer)
(smtpmail-do-bcc delimline)
; Send or queue
(if (not smtpmail-queue-mail)
(if (not (null smtpmail-recipient-address-list))
(if (not (smtpmail-via-smtp
smtpmail-recipient-address-list tembuf))
(error "Sending failed; SMTP protocol error"))
(error "Sending failed; no recipients"))
(let* ((file-data (concat
smtpmail-queue-dir
(concat (time-stamp-yyyy-mm-dd)
"_" (time-stamp-hh:mm:ss))))
(file-elisp (concat file-data ".el"))
(buffer-data (create-file-buffer file-data))
(buffer-elisp (create-file-buffer file-elisp))
(buffer-scratch "*queue-mail*"))
(save-excursion
(set-buffer buffer-data)
(erase-buffer)
(insert-buffer tembuf)
(write-file file-data)
(set-buffer buffer-elisp)
(erase-buffer)
(insert (concat
"(setq smtpmail-recipient-address-list '"
(prin1-to-string smtpmail-recipient-address-list)
")\n"))
(write-file file-elisp)
(set-buffer (generate-new-buffer buffer-scratch))
(insert (concat file-data "\n"))
(append-to-file (point-min)
(point-max)
smtpmail-queue-index)
)
(kill-buffer buffer-scratch)
(kill-buffer buffer-data)
(kill-buffer buffer-elisp))))
(kill-buffer tembuf)
(if (bufferp errbuf)
(kill-buffer errbuf)))))
(defun smtpmail-send-queued-mail ()
"Send mail that was queued as a result of setting `smtpmail-queue-mail'."
(interactive)
;;; Get index, get first mail, send it, get second mail, etc...
(let ((buffer-index (find-file-noselect smtpmail-queue-index))
(file-msg "")
(tembuf nil))
(save-excursion
(set-buffer buffer-index)
(beginning-of-buffer)
(while (not (eobp))
(setq file-msg (buffer-substring (point) (save-excursion
(end-of-line)
(point))))
(load file-msg)
(setq tembuf (find-file-noselect file-msg))
(if (not (null smtpmail-recipient-address-list))
(if (not (smtpmail-via-smtp smtpmail-recipient-address-list
tembuf))
(error "Sending failed; SMTP protocol error"))
(error "Sending failed; no recipients"))
(delete-file file-msg)
(delete-file (concat file-msg ".el"))
(kill-buffer tembuf)
(kill-line 1))
(set-buffer buffer-index)
(save-buffer smtpmail-queue-index)
(kill-buffer buffer-index)
)))
;(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)))
(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)
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
(save-excursion
(set-buffer process-buffer)
(erase-buffer))
;; open the connection to the server
(setq process (open-network-stream "SMTP" process-buffer host port))
(and (null process) (throw 'done nil))
;; set the send-filter
(set-process-filter process 'smtpmail-process-filter)
(save-excursion
(set-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)
)
;; 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)))
(let ((extension-lines (cdr (cdr response-code))))
(while extension-lines
(let ((name (intern (downcase (car (split-string (substring (car extension-lines) 4) "[ ]"))))))
(and name
(cond ((memq name '(verb xvrb 8bitmime onex xone
expn size dsn etrn
help xusr))
(setq supported-extensions
(cons name supported-extensions)))
(t (message "unknown extension %s"
name)))))
(setq extension-lines (cdr extension-lines)))))
(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-info
(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 (member 'size supported-extensions)
(format " SIZE=%d"
(save-excursion
(set-buffer smtpmail-text-buffer)
;; size estimate:
(+ (- (point-max) (point-min))
;; Add one byte for each change-of-line
;; because or CR-LF representation:
(count-lines (point-min) (point-max))
;; For some reason, an empty line is
;; added to the message. Maybe this
;; is a bug, but it can't hurt to add
;; those two bytes anyway:
2)))
""))
(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"
user-mail-address
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>" (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
(save-excursion
(set-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))))))
(defun smtpmail-process-filter (process output)
(save-excursion
(set-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)
(while response-continue
(goto-char smtpmail-read-point)
(while (not (search-forward "\r\n" nil t))
(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-int
(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))
(when smtpmail-code-conv-from
(setq data (encode-coding-string data *internal* 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 nil)
this-line
this-line-end)
(save-excursion
(set-buffer buffer)
(goto-char (point-min)))
(while data-continue
(save-excursion
(set-buffer buffer)
(beginning-of-line)
(setq this-line (point))
(end-of-line)
(setq this-line-end (point))
(setq sending-data nil)
(setq sending-data (buffer-substring this-line this-line-end))
(if (/= (forward-line 1) 0)
(setq data-continue nil)))
(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>."
(require 'mail-utils) ;; pick up mail-strip-quoted-names
(let
((case-fold-search t)
(simple-address-list "")
this-line
this-line-end
addr-regexp)
(unwind-protect
(save-excursion
;;
(set-buffer smtpmail-address-buffer) (erase-buffer)
(insert-buffer-substring smtpmail-text-buffer header-start header-end)
(goto-char (point-min))
;; RESENT-* fields should stop processing of regular fields.
(save-excursion
(if (re-search-forward "^Resent-\\(to\\|cc\\|bcc\\):" header-end t)
(setq addr-regexp "^Resent-\\(to\\|cc\\|bcc\\):")
(setq addr-regexp "^\\(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-string " ")
(insert-string simple-address-list)
(insert-string "\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
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