smtpmail.el

   1 ;;; smtpmail.el --- SMTP interface for mail-mode
   2
   3 ;; Copyright (C) 1995, 1996, 1998, 1999, 2000 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)
  32 ;;(setq smtp-default-server "YOUR SMTP HOST")
  33 ;;(setq smtp-service "smtp")
  34 ;;(setq smtp-local-domain "YOUR DOMAIN NAME")
  35 ;;(setq smtp-debug-info t)
  36 ;;(autoload 'smtpmail-send-it "smtpmail")
  37 ;;(setq user-full-name "YOUR NAME HERE")
  38
  39 ;; To queue mail, set smtpmail-queue-mail to t and use
  40 ;; smtpmail-send-queued-mail to send.
  41
  42
  43 ;;; Code:
  44
  45 (require 'custom)
  46 (require 'smtp)
  47 (require 'sendmail)
  48 (require 'time-stamp)
  49 (require 'mel) ; binary-write-decoded-region, binary-find-file-noselect
  50
  51 (eval-when-compile (require 'static))
  52
  53 (static-when (featurep 'xemacs)
  54   (define-obsolete-variable-alias 'smtpmail-default-smtp-server
  55     'smtp-default-server)
  56   (define-obsolete-variable-alias 'smtpmail-smtp-server 'smtp-server)
  57   (define-obsolete-variable-alias 'smtpmail-smtp-service 'smtp-service)
  58   (define-obsolete-variable-alias 'smtpmail-local-domain 'smtp-local-domain)
  59   (define-obsolete-variable-alias 'smtpmail-debug-info 'smtp-debug-info)
  60   )
  61
  62 ;;;
  63
  64 (defcustom smtpmail-queue-mail nil
  65   "Specify if mail is queued (if t) or sent immediately (if nil).
  66 If queued, it is stored in the directory `smtpmail-queue-dir'
  67 and sent with `smtpmail-send-queued-mail'."
  68   :type 'boolean
  69   :group 'smtp)
  70
  71 (defcustom smtpmail-queue-dir "~/Mail/queued-mail/"
  72   "Directory where `smtpmail.el' stores queued mail."
  73   :type 'directory
  74   :group 'smtp)
  75
  76 (defvar smtpmail-queue-index-file "index"
  77   "File name of queued mail index,
  78 This is relative to `smtpmail-queue-dir'.")
  79
  80 (defvar smtpmail-queue-index
  81   (concat (file-name-as-directory smtpmail-queue-dir)
  82           smtpmail-queue-index-file))
  83
  84 (defvar smtpmail-recipient-address-list nil)
  85
  86
  87 ;;;
  88 ;;;
  89 ;;;
  90
  91 ;;;###autoload
  92 (defun smtpmail-send-it ()
  93   (require 'mail-utils)
  94   (let ((errbuf (if mail-interactive
  95                     (generate-new-buffer " smtpmail errors")
  96                   0))
  97         (tembuf (generate-new-buffer " smtpmail temp"))
  98         (case-fold-search nil)
  99         resend-to-addresses
 100         delimline
 101         (mailbuf (current-buffer)))
 102     (unwind-protect
 103         (save-excursion
 104           (set-buffer tembuf)
 105           (erase-buffer)
 106           (insert-buffer-substring mailbuf)
 107           (goto-char (point-max))
 108           ;; require one newline at the end.
 109           (or (= (preceding-char) ?\n)
 110               (insert ?\n))
 111           ;; Change header-delimiter to be what sendmail expects.
 112           (goto-char (point-min))
 113           (re-search-forward
 114             (concat "^" (regexp-quote mail-header-separator) "\n"))
 115           (replace-match "\n")
 116           (backward-char 1)
 117           (setq delimline (point-marker))
 118 ;;        (sendmail-synch-aliases)
 119           (if (and mail-aliases (fboundp 'expand-mail-aliases)) ; XEmacs
 120               (expand-mail-aliases (point-min) delimline))
 121           (goto-char (point-min))
 122           ;; ignore any blank lines in the header
 123           (while (and (re-search-forward "\n\n\n*" delimline t)
 124                       (< (point) delimline))
 125             (replace-match "\n"))
 126           (let ((case-fold-search t))
 127             (goto-char (point-min))
 128             (goto-char (point-min))
 129             (while (re-search-forward "^Resent-to:" delimline t)
 130               (setq resend-to-addresses
 131                     (save-restriction
 132                       (narrow-to-region (point)
 133                                         (save-excursion
 134                                           (forward-line 1)
 135                                           (while (looking-at "^[ \t]")
 136                                             (forward-line 1))
 137                                           (point)))
 138                       (append (mail-parse-comma-list)
 139                               resend-to-addresses))))
 140 ;;; Apparently this causes a duplicate Sender.
 141 ;;;         ;; If the From is different than current user, insert Sender.
 142 ;;;         (goto-char (point-min))
 143 ;;;         (and (re-search-forward "^From:"  delimline t)
 144 ;;;              (progn
 145 ;;;                (require 'mail-utils)
 146 ;;;                (not (string-equal
 147 ;;;                      (mail-strip-quoted-names
 148 ;;;                       (save-restriction
 149 ;;;                         (narrow-to-region (point-min) delimline)
 150 ;;;                         (mail-fetch-field "From")))
 151 ;;;                      (user-login-name))))
 152 ;;;              (progn
 153 ;;;                (forward-line 1)
 154 ;;;                (insert "Sender: " (user-login-name) "\n")))
 155             ;; Don't send out a blank subject line
 156             (goto-char (point-min))
 157             (if (re-search-forward "^Subject:\\([ \t]*\n\\)+\\b" delimline t)
 158                 (replace-match "")
 159               ;; This one matches a Subject just before the header delimiter.
 160               (if (and (re-search-forward "^Subject:\\([ \t]*\n\\)+" delimline t)
 161                        (= (match-end 0) delimline))
 162                   (replace-match "")))
 163             ;; Put the "From:" field in unless for some odd reason
 164             ;; they put one in themselves.
 165             (goto-char (point-min))
 166             (if (not (re-search-forward "^From:" delimline t))
 167                 (let* ((login user-mail-address)
 168                        (fullname (user-full-name)))
 169                   (cond ((eq mail-from-style 'angles)
 170                          (insert "From: " fullname)
 171                          (let ((fullname-start (+ (point-min) 6))
 172                                (fullname-end (point-marker)))
 173                            (goto-char fullname-start)
 174                            ;; Look for a character that cannot appear unquoted
 175                            ;; according to RFC 822.
 176                            (if (re-search-forward "[^- !#-'*+/-9=?A-Z^-~]"
 177                                                   fullname-end 1)
 178                                (progn
 179                                  ;; Quote fullname, escaping specials.
 180                                  (goto-char fullname-start)
 181                                  (insert "\"")
 182                                  (while (re-search-forward "[\"\\]"
 183                                                            fullname-end 1)
 184                                    (replace-match "\\\\\\&" t))
 185                                  (insert "\""))))
 186                          (insert " <" login ">\n"))
 187                         ((eq mail-from-style 'parens)
 188                          (insert "From: " login " (")
 189                          (let ((fullname-start (point)))
 190                            (insert fullname)
 191                            (let ((fullname-end (point-marker)))
 192                              (goto-char fullname-start)
 193                              ;; RFC 822 says \ and nonmatching parentheses
 194                              ;; must be escaped in comments.
 195                              ;; Escape every instance of ()\ ...
 196                              (while (re-search-forward "[()\\]" fullname-end 1)
 197                                (replace-match "\\\\\\&" t))
 198                              ;; ... then undo escaping of matching parentheses,
 199                              ;; including matching nested parentheses.
 200                              (goto-char fullname-start)
 201                              (while (re-search-forward
 202                                      "\\(\\=\\|[^\\]\\(\\\\\\\\\\)*\\)\\\\(\\(\\([^\\]\\|\\\\\\\\\\)*\\)\\\\)"
 203                                      fullname-end 1)
 204                                (replace-match "\\1(\\3)" t)
 205                                (goto-char fullname-start))))
 206                          (insert ")\n"))
 207                         ((null mail-from-style)
 208                          (insert "From: " login "\n")))))
 209             ;; Insert an extra newline if we need it to work around
 210             ;; Sun's bug that swallows newlines.
 211             (goto-char (1+ delimline))
 212             (if (eval mail-mailer-swallows-blank-line)
 213                 (newline))
 214             ;; Find and handle any FCC fields.
 215             (goto-char (point-min))
 216             (if (re-search-forward "^FCC:" delimline t)
 217                 (mail-do-fcc delimline))
 218             (if mail-interactive
 219                 (save-excursion
 220                   (set-buffer errbuf)
 221                   (erase-buffer))))
 222           ;;
 223           ;;
 224           ;;
 225           (setq smtpmail-recipient-address-list
 226                 (or resend-to-addresses
 227                     (smtp-deduce-address-list tembuf (point-min) delimline)))
 228
 229           (smtpmail-do-bcc delimline)
 230           ; Send or queue
 231           (if (not smtpmail-queue-mail)
 232               (if smtpmail-recipient-address-list
 233                   (smtp-send-buffer user-mail-address
 234                                     smtpmail-recipient-address-list
 235                                     tembuf)
 236                 (error "Sending failed; no recipients"))
 237             (let* ((file-data (convert-standard-filename
 238                                (concat
 239                                 (file-name-as-directory smtpmail-queue-dir)
 240                                 (time-stamp-yyyy-mm-dd)
 241                                 "_" (time-stamp-hh:mm:ss))))
 242                    (file-elisp (concat file-data ".el"))
 243                    (buffer-data (create-file-buffer file-data))
 244                    (buffer-elisp (create-file-buffer file-elisp))
 245                    (buffer-scratch "*queue-mail*"))
 246               (save-excursion
 247                 (set-buffer buffer-data)
 248                 (erase-buffer)
 249                 (insert-buffer tembuf)
 250                 (or (file-directory-p smtpmail-queue-dir)
 251                     (make-directory smtpmail-queue-dir t))
 252                 (binary-write-decoded-region (point-min) (point-max) file-data)
 253                 (set-buffer buffer-elisp)
 254                 (erase-buffer)
 255                 (insert (concat
 256                          "(setq smtpmail-recipient-address-list '"
 257                          (prin1-to-string smtpmail-recipient-address-list)
 258                          ")\n"))
 259                 (write-file file-elisp)
 260                 (set-buffer (generate-new-buffer buffer-scratch))
 261                 (insert (concat file-data "\n"))
 262                 (append-to-file (point-min)
 263                                 (point-max)
 264                                 smtpmail-queue-index)
 265                 )
 266               (kill-buffer buffer-scratch)
 267               (kill-buffer buffer-data)
 268               (kill-buffer buffer-elisp))))
 269       (kill-buffer tembuf)
 270       (if (bufferp errbuf)
 271           (kill-buffer errbuf)))))
 272
 273 (defun smtpmail-send-queued-mail ()
 274   "Send mail that was queued as a result of setting `smtpmail-queue-mail'."
 275   (interactive)
 276   ;;; Get index, get first mail, send it, get second mail, etc...
 277   (let ((buffer-index (find-file-noselect smtpmail-queue-index))
 278         (file-msg "")
 279         (tembuf nil))
 280     (save-excursion
 281       (set-buffer buffer-index)
 282       (beginning-of-buffer)
 283       (while (not (eobp))
 284         (setq file-msg (buffer-substring (point) (save-excursion
 285                                                    (end-of-line)
 286                                                    (point))))
 287         (load file-msg)
 288         (setq tembuf (binary-find-file-noselect file-msg))
 289         (if smtpmail-recipient-address-list
 290             (smtp-send-buffer user-mail-address
 291                               smtpmail-recipient-address-list tembuf)
 292           (error "Sending failed; no recipients"))
 293         (delete-file file-msg)
 294         (delete-file (concat file-msg ".el"))
 295         (kill-buffer tembuf)
 296         (kill-line 1))
 297       (set-buffer buffer-index)
 298       (save-buffer smtpmail-queue-index)
 299       (kill-buffer buffer-index)
 300       )))
 301
 302
 303 (defun smtpmail-do-bcc (header-end)
 304   "Delete BCC: and their continuation lines from the header area.
 305 There may be multiple BCC: lines, and each may have arbitrarily
 306 many continuation lines."
 307   (let ((case-fold-search t))
 308     (save-excursion
 309       (goto-char (point-min))
 310       ;; iterate over all BCC: lines
 311       (while (re-search-forward "^BCC:" header-end t)
 312         (delete-region (match-beginning 0) (progn (forward-line 1) (point)))
 313         ;; get rid of any continuation lines
 314         (while (and (looking-at "^[ \t].*\n") (< (point) header-end))
 315           (replace-match ""))
 316         )
 317       ) ;; save-excursion
 318     ) ;; let
 319   )
 320
 321
 322 ;;;
 323
 324 (provide 'smtpmail)
 325
 326 ;;; smtpmail.el ends here