mail/smtpmail.el

   1 ;;; smtpmail.el --- SMTP interface for mail-mode
   2
   3 ;; Copyright (C) 1995, 1996, 1998, 1999, 2001 Free Software Foundation, Inc.
   4
   5 ;; Author: Tomoji Kagatani <kagatani@rbc.ncl.omron.co.jp>
   6 ;; Keywords: mail
   7
   8 ;; This file is part of FLIM (Faithful Library about Internet Message).
   9
  10 ;; This program is free software; you can redistribute it and/or
  11 ;; modify it under the terms of the GNU General Public License as
  12 ;; published by the Free Software Foundation; either version 2, or (at
  13 ;; your option) any later version.
  14
  15 ;; This program is distributed in the hope that it will be useful, but
  16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18 ;; General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with this program; see the file COPYING.  If not, write to
  22 ;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Commentary:
  26
  27 ;; Send Mail to smtp host from smtpmail temp buffer.
  28
  29 ;; Please add these lines in your .emacs(_emacs).
  30 ;;
  31 ;;(setq send-mail-function 'smtpmail-send-it) ; if you use `mail'
  32 ;;(setq message-send-mail-function 'smtpmail-send-it) ; if you are using Gnus.
  33 ;;(setq smtp-default-server "YOUR SMTP HOST")
  34 ;;(setq smtp-service "smtp")
  35 ;;(setq smtp-local-domain "YOUR DOMAIN NAME")
  36 ;;(setq smtp-debug-info t)
  37 ;;(autoload 'smtpmail-send-it "smtpmail")
  38 ;;(setq user-full-name "YOUR NAME HERE")
  39
  40 ;; To queue mail, set smtpmail-queue-mail to t and use
  41 ;; smtpmail-send-queued-mail to send.
  42
  43
  44 ;;; Code:
  45
  46 (require 'custom)
  47 (require 'smtp)
  48 (require 'sendmail)
  49 (require 'time-stamp)
  50 (require 'mel) ; binary-write-decoded-region, binary-find-file-noselect
  51
  52 (eval-when-compile (require 'static))
  53
  54 ;; (static-when (featurep 'xemacs)
  55 ;;   (define-obsolete-variable-alias 'smtpmail-default-smtp-server
  56 ;;     'smtp-default-server)
  57 ;;   (define-obsolete-variable-alias 'smtpmail-smtp-server 'smtp-server)
  58 ;;   (define-obsolete-variable-alias 'smtpmail-smtp-service 'smtp-service)
  59 ;;   (define-obsolete-variable-alias 'smtpmail-local-domain 'smtp-local-domain)
  60 ;;   (define-obsolete-variable-alias 'smtpmail-debug-info 'smtp-debug-info)
  61 ;;   )
  62
  63 ;;;
  64
  65 (defcustom smtpmail-queue-mail nil
  66   "Specify if mail is queued (if t) or sent immediately (if nil).
  67 If queued, it is stored in the directory `smtpmail-queue-dir'
  68 and sent with `smtpmail-send-queued-mail'."
  69   :type 'boolean
  70   :group 'smtp)
  71
  72 (defcustom smtpmail-queue-dir "~/Mail/queued-mail/"
  73   "Directory where `smtpmail.el' stores queued mail."
  74   :type 'directory
  75   :group 'smtp)
  76
  77 (defvar smtpmail-queue-index-file "index"
  78   "File name of queued mail index,
  79 This is relative to `smtpmail-queue-dir'.")
  80
  81 (defvar smtpmail-queue-index
  82   (concat (file-name-as-directory smtpmail-queue-dir)
  83           smtpmail-queue-index-file))
  84
  85 (defvar smtpmail-recipient-address-list nil)
  86
  87
  88 ;;;
  89 ;;;
  90 ;;;
  91
  92 ;;;###autoload
  93 (defun smtpmail-send-it ()
  94   (require 'mail-utils)
  95   (let ((errbuf (if mail-interactive
  96                     (generate-new-buffer " smtpmail errors")
  97                   0))
  98         (tembuf (generate-new-buffer " smtpmail temp"))
  99         (case-fold-search nil)
 100         resend-to-addresses
 101         delimline
 102         (mailbuf (current-buffer)))
 103     (unwind-protect
 104         (save-excursion
 105           (set-buffer tembuf)
 106           (erase-buffer)
 107           (insert-buffer-substring mailbuf)
 108           (goto-char (point-max))
 109           ;; require one newline at the end.
 110           (or (= (preceding-char) ?\n)
 111               (insert ?\n))
 112           ;; Change header-delimiter to be what sendmail expects.
 113           (goto-char (point-min))
 114           (if (re-search-forward
 115                (concat "^\\(" (regexp-quote mail-header-separator) "\\)?\n"))
 116               (replace-match "\n"))
 117           (backward-char 1)
 118           (setq delimline (point-marker))
 119 ;;        (sendmail-synch-aliases)
 120           (if (and mail-aliases (fboundp 'expand-mail-aliases)) ; XEmacs
 121               (expand-mail-aliases (point-min) delimline))
 122           (goto-char (point-min))
 123           ;; ignore any blank lines in the header
 124           (while (and (re-search-forward "\n\n\n*" delimline t)
 125                       (< (point) delimline))
 126             (replace-match "\n"))
 127           (let ((case-fold-search t))
 128             (goto-char (point-min))
 129             (goto-char (point-min))
 130             (while (re-search-forward "^Resent-to:" delimline t)
 131               (setq resend-to-addresses
 132                     (save-restriction
 133                       (narrow-to-region (point)
 134                                         (save-excursion
 135                                           (forward-line 1)
 136                                           (while (looking-at "^[ \t]")
 137                                             (forward-line 1))
 138                                           (point)))
 139                       (append (mail-parse-comma-list)
 140                               resend-to-addresses))))
 141 ;;; Apparently this causes a duplicate Sender.
 142 ;;;         ;; If the From is different than current user, insert Sender.
 143 ;;;         (goto-char (point-min))
 144 ;;;         (and (re-search-forward "^From:"  delimline t)
 145 ;;;              (progn
 146 ;;;                (require 'mail-utils)
 147 ;;;                (not (string-equal
 148 ;;;                      (mail-strip-quoted-names
 149 ;;;                       (save-restriction
 150 ;;;                         (narrow-to-region (point-min) delimline)
 151 ;;;                         (mail-fetch-field "From")))
 152 ;;;                      (user-login-name))))
 153 ;;;              (progn
 154 ;;;                (forward-line 1)
 155 ;;;                (insert "Sender: " (user-login-name) "\n")))
 156             ;; Don't send out a blank subject line
 157             (goto-char (point-min))
 158             (if (re-search-forward "^Subject:[ \t]*\n" delimline t)
 159                 (replace-match ""))
 160             ;; Put the "From:" field in unless for some odd reason
 161             ;; they put one in themselves.
 162             (goto-char (point-min))
 163             (if (not (re-search-forward "^From:" delimline t))
 164                 (let* ((login user-mail-address)
 165                        (fullname (user-full-name)))
 166                   (cond ((eq mail-from-style 'angles)
 167                          (insert "From: " fullname)
 168                          (let ((fullname-start (+ (point-min) 6))
 169                                (fullname-end (point-marker)))
 170                            (goto-char fullname-start)
 171                            ;; Look for a character that cannot appear unquoted
 172                            ;; according to RFC 822.
 173                            (if (re-search-forward "[^- !#-'*+/-9=?A-Z^-~]"
 174                                                   fullname-end 1)
 175                                (progn
 176                                  ;; Quote fullname, escaping specials.
 177                                  (goto-char fullname-start)
 178                                  (insert "\"")
 179                                  (while (re-search-forward "[\"\\]"
 180                                                            fullname-end 1)
 181                                    (replace-match "\\\\\\&" t))
 182                                  (insert "\""))))
 183                          (insert " <" login ">\n"))
 184                         ((eq mail-from-style 'parens)
 185                          (insert "From: " login " (")
 186                          (let ((fullname-start (point)))
 187                            (insert fullname)
 188                            (let ((fullname-end (point-marker)))
 189                              (goto-char fullname-start)
 190                              ;; RFC 822 says \ and nonmatching parentheses
 191                              ;; must be escaped in comments.
 192                              ;; Escape every instance of ()\ ...
 193                              (while (re-search-forward "[()\\]" fullname-end 1)
 194                                (replace-match "\\\\\\&" t))
 195                              ;; ... then undo escaping of matching parentheses,
 196                              ;; including matching nested parentheses.
 197                              (goto-char fullname-start)
 198                              (while (re-search-forward
 199                                      "\\(\\=\\|[^\\]\\(\\\\\\\\\\)*\\)\\\\(\\(\\([^\\]\\|\\\\\\\\\\)*\\)\\\\)"
 200                                      fullname-end 1)
 201                                (replace-match "\\1(\\3)" t)
 202                                (goto-char fullname-start))))
 203                          (insert ")\n"))
 204                         ((null mail-from-style)
 205                          (insert "From: " login "\n")))))
 206             ;; Insert an extra newline if we need it to work around
 207             ;; Sun's bug that swallows newlines.
 208             (goto-char (1+ delimline))
 209             (if (eval mail-mailer-swallows-blank-line)
 210                 (newline))
 211             ;; Find and handle any FCC fields.
 212             (goto-char (point-min))
 213             (if (re-search-forward "^FCC:" delimline t)
 214                 (mail-do-fcc delimline))
 215             (if mail-interactive
 216                 (save-excursion
 217                   (set-buffer errbuf)
 218                   (erase-buffer))))
 219           ;;
 220           ;;
 221           ;;
 222           (setq smtpmail-recipient-address-list
 223                 (or resend-to-addresses
 224                     (smtp-deduce-address-list tembuf (point-min) delimline)))
 225
 226           (smtpmail-do-bcc delimline)
 227           ; Send or queue
 228           (if (not smtpmail-queue-mail)
 229               (if smtpmail-recipient-address-list
 230                   (smtp-send-buffer user-mail-address
 231                                     smtpmail-recipient-address-list
 232                                     tembuf)
 233                 (error "Sending failed; no recipients"))
 234             (let* ((file-data (convert-standard-filename
 235                                (concat
 236                                 (file-name-as-directory smtpmail-queue-dir)
 237                                 (time-stamp-yyyy-mm-dd)
 238                                 "_" (time-stamp-hh:mm:ss))))
 239                    (file-elisp (concat file-data ".el"))
 240                    (buffer-data (create-file-buffer file-data))
 241                    (buffer-elisp (create-file-buffer file-elisp))
 242                    (buffer-scratch "*queue-mail*"))
 243               (save-excursion
 244                 (set-buffer buffer-data)
 245                 (erase-buffer)
 246                 (insert-buffer tembuf)
 247                 (or (file-directory-p smtpmail-queue-dir)
 248                     (make-directory smtpmail-queue-dir t))
 249                 (binary-write-decoded-region (point-min) (point-max) file-data)
 250                 (set-buffer buffer-elisp)
 251                 (erase-buffer)
 252                 (insert (concat
 253                          "(setq smtpmail-recipient-address-list '"
 254                          (prin1-to-string smtpmail-recipient-address-list)
 255                          ")\n"))
 256                 (write-file file-elisp)
 257                 (set-buffer (generate-new-buffer buffer-scratch))
 258                 (insert (concat file-data "\n"))
 259                 (append-to-file (point-min)
 260                                 (point-max)
 261                                 smtpmail-queue-index)
 262                 )
 263               (kill-buffer buffer-scratch)
 264               (kill-buffer buffer-data)
 265               (kill-buffer buffer-elisp))))
 266       (kill-buffer tembuf)
 267       (if (bufferp errbuf)
 268           (kill-buffer errbuf)))))
 269
 270 (defun smtpmail-send-queued-mail ()
 271   "Send mail that was queued as a result of setting `smtpmail-queue-mail'."
 272   (interactive)
 273   ;;; Get index, get first mail, send it, get second mail, etc...
 274   (let ((buffer-index (find-file-noselect smtpmail-queue-index))
 275         (file-msg "")
 276         (tembuf nil))
 277     (save-excursion
 278       (set-buffer buffer-index)
 279       (beginning-of-buffer)
 280       (while (not (eobp))
 281         (setq file-msg (buffer-substring (point) (save-excursion
 282                                                    (end-of-line)
 283                                                    (point))))
 284         (load file-msg)
 285         (setq tembuf (binary-find-file-noselect file-msg))
 286         (if smtpmail-recipient-address-list
 287             (smtp-send-buffer user-mail-address
 288                               smtpmail-recipient-address-list tembuf)
 289           (error "Sending failed; no recipients"))
 290         (delete-file file-msg)
 291         (delete-file (concat file-msg ".el"))
 292         (kill-buffer tembuf)
 293         (kill-line 1))
 294       (set-buffer buffer-index)
 295       (save-buffer smtpmail-queue-index)
 296       (kill-buffer buffer-index)
 297       )))
 298
 299
 300 (defun smtpmail-do-bcc (header-end)
 301   "Delete BCC: and their continuation lines from the header area.
 302 There may be multiple BCC: lines, and each may have arbitrarily
 303 many continuation lines."
 304   (let ((case-fold-search t))
 305     (save-excursion
 306       (goto-char (point-min))
 307       ;; iterate over all BCC: lines
 308       (while (re-search-forward "^BCC:" header-end t)
 309         (delete-region (match-beginning 0) (progn (forward-line 1) (point)))
 310         ;; get rid of any continuation lines
 311         (while (and (looking-at "^[ \t].*\n") (< (point) header-end))
 312           (replace-match ""))
 313         )
 314       ) ;; save-excursion
 315     ) ;; let
 316   )
 317
 318
 319 ;;;
 320
 321 (provide 'smtpmail)
 322
 323 ;;; smtpmail.el ends here