lisp/mail/smtpmail.el

   1 ;;; smtpmail.el --- simple SMTP protocol (RFC 821) for sending mail
   2
   3 ;; Copyright (C) 1995, 1996 Free Software Foundation, Inc.
   4
   5 ;; Author: Tomoji Kagatani <kagatani@rbc.ncl.omron.co.jp>
   6 ;; Maintainer: Brian D. Carlstrom <bdc@ai.mit.edu>
   7 ;; ESMTP support: Simon Leinen <simon@switch.ch>
   8 ;; Keywords: mail
   9
  10 ;; This file is part of GNU Emacs.
  11
  12 ;; GNU Emacs is free software; you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation; either version 2, or (at your option)
  15 ;; any later version.
  16
  17 ;; GNU Emacs is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  24 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  25 ;; Boston, MA 02111-1307, USA.
  26
  27 ;;; Commentary:
  28
  29 ;; Send Mail to smtp host from smtpmail temp buffer.
  30
  31 ;; Please add these lines in your .emacs(_emacs).
  32 ;;
  33 ;;(setq send-mail-function 'smtpmail-send-it)
  34 ;;(setq smtpmail-default-smtp-server "YOUR SMTP HOST")
  35 ;;(setq smtpmail-smtp-service "smtp")
  36 ;;(setq smtpmail-local-domain "YOUR DOMAIN NAME")
  37 ;;(setq smtpmail-debug-info t)
  38 ;;(load-library "smtpmail")
  39 ;;(setq smtpmail-code-conv-from nil)
  40 ;;(setq user-full-name "YOUR NAME HERE")
  41
  42 ;; To queue mail, set smtpmail-queue-mail to t and use
  43 ;; smtpmail-send-queued-mail to send.
  44
  45
  46 ;;; Code:
  47
  48 (require 'sendmail)
  49 (require 'time-stamp)
  50
  51 ;;;
  52 (defgroup smtpmail nil
  53   "SMTP protocol for sending mail."
  54   :group 'mail)
  55
  56
  57 (defcustom smtpmail-default-smtp-server nil
  58   "*Specify default SMTP server."
  59   :type '(choice (const nil) string)
  60   :group 'smtpmail)
  61
  62 (defcustom smtpmail-smtp-server
  63   (or (getenv "SMTPSERVER") smtpmail-default-smtp-server)
  64   "*The name of the host running SMTP server."
  65   :type '(choice (const nil) string)
  66   :group 'smtpmail)
  67
  68 (defcustom smtpmail-smtp-service 25
  69   "*SMTP service port number. smtp or 25 ."
  70   :type 'integer
  71   :group 'smtpmail)
  72
  73 (defcustom smtpmail-local-domain nil
  74   "*Local domain name without a host name.
  75 If the function (system-name) returns the full internet address,
  76 don't define this value."
  77   :type '(choice (const nil) string)
  78   :group 'smtpmail)
  79
  80 (defcustom smtpmail-debug-info nil
  81   "*smtpmail debug info printout. messages and process buffer."
  82   :type 'boolean
  83   :group 'smtpmail)
  84
  85 (defcustom smtpmail-code-conv-from nil ;; *junet*
  86   "*smtpmail code convert from this code to *internal*..for tiny-mime.."
  87   :type 'boolean
  88   :group 'smtpmail)
  89
  90 (defcustom smtpmail-queue-mail nil
  91   "*Specify if mail is queued (if t) or sent immediately (if nil).
  92 If queued, it is stored in the directory `smtpmail-queue-dir'
  93 and sent with `smtpmail-send-queued-mail'."
  94   :type 'boolean
  95   :group 'smtpmail)
  96
  97 (defcustom smtpmail-queue-dir "~/Mail/queued-mail/"
  98   "*Directory where `smtpmail.el' stores queued mail."
  99   :type 'directory
 100   :group 'smtpmail)
 101
 102 (defvar smtpmail-queue-index-file "index"
 103   "File name of queued mail index,
 104 This is relative to `smtpmail-queue-dir'.")
 105
 106 (defvar smtpmail-queue-index (concat smtpmail-queue-dir
 107                                      smtpmail-queue-index-file))
 108
 109 ;;;
 110 ;;;
 111 ;;;
 112
 113 (defun smtpmail-send-it ()
 114   (require 'mail-utils)
 115   (let ((errbuf (if mail-interactive
 116                     (generate-new-buffer " smtpmail errors")
 117                   0))
 118         (tembuf (generate-new-buffer " smtpmail temp"))
 119         (case-fold-search nil)
 120         resend-to-addresses
 121         delimline
 122         (mailbuf (current-buffer)))
 123     (unwind-protect
 124         (save-excursion
 125           (set-buffer tembuf)
 126           (erase-buffer)
 127           (insert-buffer-substring mailbuf)
 128           (goto-char (point-max))
 129           ;; require one newline at the end.
 130           (or (= (preceding-char) ?\n)
 131               (insert ?\n))
 132           ;; Change header-delimiter to be what sendmail expects.
 133           (goto-char (point-min))
 134           (re-search-forward
 135             (concat "^" (regexp-quote mail-header-separator) "\n"))
 136           (replace-match "\n")
 137           (backward-char 1)
 138           (setq delimline (point-marker))
 139 ;;        (sendmail-synch-aliases)
 140           (if mail-aliases
 141               (expand-mail-aliases (point-min) delimline))
 142           (goto-char (point-min))
 143           ;; ignore any blank lines in the header
 144           (while (and (re-search-forward "\n\n\n*" delimline t)
 145                       (< (point) delimline))
 146             (replace-match "\n"))
 147           (let ((case-fold-search t))
 148             (goto-char (point-min))
 149             (goto-char (point-min))
 150             (while (re-search-forward "^Resent-to:" delimline t)
 151               (setq resend-to-addresses
 152                     (save-restriction
 153                       (narrow-to-region (point)
 154                                         (save-excursion
 155                                           (end-of-line)
 156                                           (point)))
 157                       (append (mail-parse-comma-list)
 158                               resend-to-addresses))))
 159 ;;; Apparently this causes a duplicate Sender.
 160 ;;;         ;; If the From is different than current user, insert Sender.
 161 ;;;         (goto-char (point-min))
 162 ;;;         (and (re-search-forward "^From:"  delimline t)
 163 ;;;              (progn
 164 ;;;                (require 'mail-utils)
 165 ;;;                (not (string-equal
 166 ;;;                      (mail-strip-quoted-names
 167 ;;;                       (save-restriction
 168 ;;;                         (narrow-to-region (point-min) delimline)
 169 ;;;                         (mail-fetch-field "From")))
 170 ;;;                      (user-login-name))))
 171 ;;;              (progn
 172 ;;;                (forward-line 1)
 173 ;;;                (insert "Sender: " (user-login-name) "\n")))
 174             ;; Don't send out a blank subject line
 175             (goto-char (point-min))
 176             (if (re-search-forward "^Subject:[ \t]*\n" delimline t)
 177                 (replace-match ""))
 178             ;; Put the "From:" field in unless for some odd reason
 179             ;; they put one in themselves.
 180             (goto-char (point-min))
 181             (if (not (re-search-forward "^From:" delimline t))
 182                 (let* ((login user-mail-address)
 183                        (fullname (user-full-name)))
 184                   (cond ((eq mail-from-style 'angles)
 185                          (insert "From: " fullname)
 186                          (let ((fullname-start (+ (point-min) 6))
 187                                (fullname-end (point-marker)))
 188                            (goto-char fullname-start)
 189                            ;; Look for a character that cannot appear unquoted
 190                            ;; according to RFC 822.
 191                            (if (re-search-forward "[^- !#-'*+/-9=?A-Z^-~]"
 192                                                   fullname-end 1)
 193                                (progn
 194                                  ;; Quote fullname, escaping specials.
 195                                  (goto-char fullname-start)
 196                                  (insert "\"")
 197                                  (while (re-search-forward "[\"\\]"
 198                                                            fullname-end 1)
 199                                    (replace-match "\\\\\\&" t))
 200                                  (insert "\""))))
 201                          (insert " <" login ">\n"))
 202                         ((eq mail-from-style 'parens)
 203                          (insert "From: " login " (")
 204                          (let ((fullname-start (point)))
 205                            (insert fullname)
 206                            (let ((fullname-end (point-marker)))
 207                              (goto-char fullname-start)
 208                              ;; RFC 822 says \ and nonmatching parentheses
 209                              ;; must be escaped in comments.
 210                              ;; Escape every instance of ()\ ...
 211                              (while (re-search-forward "[()\\]" fullname-end 1)
 212                                (replace-match "\\\\\\&" t))
 213                              ;; ... then undo escaping of matching parentheses,
 214                              ;; including matching nested parentheses.
 215                              (goto-char fullname-start)
 216                              (while (re-search-forward
 217                                      "\\(\\=\\|[^\\]\\(\\\\\\\\\\)*\\)\\\\(\\(\\([^\\]\\|\\\\\\\\\\)*\\)\\\\)"
 218                                      fullname-end 1)
 219                                (replace-match "\\1(\\3)" t)
 220                                (goto-char fullname-start))))
 221                          (insert ")\n"))
 222                         ((null mail-from-style)
 223                          (insert "From: " login "\n")))))
 224             ;; Insert an extra newline if we need it to work around
 225             ;; Sun's bug that swallows newlines.
 226             (goto-char (1+ delimline))
 227             (if (eval mail-mailer-swallows-blank-line)
 228                 (newline))
 229             ;; Find and handle any FCC fields.
 230             (goto-char (point-min))
 231             (if (re-search-forward "^FCC:" delimline t)
 232                 (mail-do-fcc delimline))
 233             (if mail-interactive
 234                 (save-excursion
 235                   (set-buffer errbuf)
 236                   (erase-buffer))))
 237           ;;
 238           ;;
 239           ;;
 240           (setq smtpmail-address-buffer (generate-new-buffer "*smtp-mail*"))
 241           (setq smtpmail-recipient-address-list
 242                 (or resend-to-addresses
 243                     (smtpmail-deduce-address-list tembuf (point-min) delimline)))
 244           (kill-buffer smtpmail-address-buffer)
 245
 246           (smtpmail-do-bcc delimline)
 247           ; Send or queue
 248           (if (not smtpmail-queue-mail)
 249               (if (not (null smtpmail-recipient-address-list))
 250                   (if (not (smtpmail-via-smtp
 251                             smtpmail-recipient-address-list tembuf))
 252                       (error "Sending failed; SMTP protocol error"))
 253                 (error "Sending failed; no recipients"))
 254             (let* ((file-data (concat
 255                                smtpmail-queue-dir
 256                                (time-stamp-strftime
 257                                 "%02y%02m%02d-%02H%02M%02S")))
 258                    (file-elisp (concat file-data ".el"))
 259                    (buffer-data (create-file-buffer file-data))
 260                    (buffer-elisp (create-file-buffer file-elisp))
 261                    (buffer-scratch "*queue-mail*"))
 262               (save-excursion
 263                 (set-buffer buffer-data)
 264                 (erase-buffer)
 265                 (insert-buffer tembuf)
 266                 (write-file file-data)
 267                 (set-buffer buffer-elisp)
 268                 (erase-buffer)
 269                 (insert (concat
 270                          "(setq smtpmail-recipient-address-list '"
 271                          (prin1-to-string smtpmail-recipient-address-list)
 272                          ")\n"))
 273                 (write-file file-elisp)
 274                 (set-buffer (generate-new-buffer buffer-scratch))
 275                 (insert (concat file-data "\n"))
 276                 (append-to-file (point-min)
 277                                 (point-max)
 278                                 smtpmail-queue-index)
 279                 )
 280               (kill-buffer buffer-scratch)
 281               (kill-buffer buffer-data)
 282               (kill-buffer buffer-elisp))))
 283       (kill-buffer tembuf)
 284       (if (bufferp errbuf)
 285           (kill-buffer errbuf)))))
 286
 287 (defun smtpmail-send-queued-mail ()
 288   "Send mail that was queued as a result of setting `smtpmail-queue-mail'."
 289   (interactive)
 290   ;;; Get index, get first mail, send it, get second mail, etc...
 291   (let ((buffer-index (find-file-noselect smtpmail-queue-index))
 292         (file-msg "")
 293         (tembuf nil))
 294     (save-excursion
 295       (set-buffer buffer-index)
 296       (beginning-of-buffer)
 297       (while (not (eobp))
 298         (setq file-msg (buffer-substring (point) (save-excursion
 299                                                    (end-of-line)
 300                                                    (point))))
 301         (load file-msg)
 302         (setq tembuf (find-file-noselect file-msg))
 303         (if (not (null smtpmail-recipient-address-list))
 304             (if (not (smtpmail-via-smtp smtpmail-recipient-address-list
 305                                         tembuf))
 306                 (error "Sending failed; SMTP protocol error"))
 307           (error "Sending failed; no recipients"))
 308         (delete-file file-msg)
 309         (delete-file (concat file-msg ".el"))
 310         (kill-buffer tembuf)
 311         (kill-line 1))
 312       (set-buffer buffer-index)
 313       (save-buffer smtpmail-queue-index)
 314       (kill-buffer buffer-index)
 315       )))
 316
 317 ;(defun smtpmail-via-smtp (host,port,sender,destination,smtpmail-text-buffer)
 318
 319 (defun smtpmail-fqdn ()
 320   (if smtpmail-local-domain
 321       (concat (system-name) "." smtpmail-local-domain)
 322     (system-name)))
 323
 324 (defun smtpmail-via-smtp (recipient smtpmail-text-buffer)
 325   (let ((process nil)
 326         (host smtpmail-smtp-server)
 327         (port smtpmail-smtp-service)
 328         response-code
 329         greeting
 330         process-buffer
 331         (supported-extensions '()))
 332     (unwind-protect
 333         (catch 'done
 334           ;; get or create the trace buffer
 335           (setq process-buffer
 336                 (get-buffer-create (format "*trace of SMTP session to %s*" host)))
 337
 338           ;; clear the trace buffer of old output
 339           (save-excursion
 340             (set-buffer process-buffer)
 341             (erase-buffer))
 342
 343           ;; open the connection to the server
 344           (setq process (open-network-stream "SMTP" process-buffer host port))
 345           (and (null process) (throw 'done nil))
 346
 347           ;; set the send-filter
 348           (set-process-filter process 'smtpmail-process-filter)
 349
 350           (save-excursion
 351             (set-buffer process-buffer)
 352             (make-local-variable 'smtpmail-read-point)
 353             (setq smtpmail-read-point (point-min))
 354
 355
 356             (if (or (null (car (setq greeting (smtpmail-read-response process))))
 357                     (not (integerp (car greeting)))
 358                     (>= (car greeting) 400))
 359                 (throw 'done nil)
 360               )
 361
 362             ;; EHLO
 363             (smtpmail-send-command process (format "EHLO %s" (smtpmail-fqdn)))
 364
 365             (if (or (null (car (setq response-code (smtpmail-read-response process))))
 366                     (not (integerp (car response-code)))
 367                     (>= (car response-code) 400))
 368                 (progn
 369                   ;; HELO
 370                   (smtpmail-send-command process (format "HELO %s" (smtpmail-fqdn)))
 371
 372                   (if (or (null (car (setq response-code (smtpmail-read-response process))))
 373                           (not (integerp (car response-code)))
 374                           (>= (car response-code) 400))
 375                       (throw 'done nil)))
 376               (let ((extension-lines (cdr (cdr response-code))))
 377                 (while extension-lines
 378                   (let ((name (intern (downcase (substring (car extension-lines) 4)))))
 379                     (and name
 380                          (cond ((memq name '(verb xvrb 8bitmime onex xone
 381                                                   expn size dsn etrn
 382                                                   help xusr))
 383                                 (setq supported-extensions
 384                                       (cons name supported-extensions)))
 385                                (t (message "unknown extension %s"
 386                                            name)))))
 387                   (setq extension-lines (cdr extension-lines)))))
 388
 389             (if (or (member 'onex supported-extensions)
 390                     (member 'xone supported-extensions))
 391                 (progn
 392                   (smtpmail-send-command process (format "ONEX"))
 393                   (if (or (null (car (setq response-code (smtpmail-read-response process))))
 394                           (not (integerp (car response-code)))
 395                           (>= (car response-code) 400))
 396                       (throw 'done nil))))
 397
 398             (if (and smtpmail-debug-info
 399                      (or (member 'verb supported-extensions)
 400                          (member 'xvrb supported-extensions)))
 401                 (progn
 402                   (smtpmail-send-command process (format "VERB"))
 403                   (if (or (null (car (setq response-code (smtpmail-read-response process))))
 404                           (not (integerp (car response-code)))
 405                           (>= (car response-code) 400))
 406                       (throw 'done nil))))
 407
 408             (if (member 'xusr supported-extensions)
 409                 (progn
 410                   (smtpmail-send-command process (format "XUSR"))
 411                   (if (or (null (car (setq response-code (smtpmail-read-response process))))
 412                           (not (integerp (car response-code)))
 413                           (>= (car response-code) 400))
 414                       (throw 'done nil))))
 415
 416             ;; MAIL FROM: <sender>
 417             (let ((size-part
 418                    (if (member 'size supported-extensions)
 419                        (format " SIZE=%d"
 420                                (save-excursion
 421                                  (set-buffer smtpmail-text-buffer)
 422                                  ;; size estimate:
 423                                  (+ (- (point-max) (point-min))
 424                                     ;; Add one byte for each change-of-line
 425                                     ;; because or CR-LF representation:
 426                                     (count-lines (point-min) (point-max))
 427                                     ;; For some reason, an empty line is
 428                                     ;; added to the message.  Maybe this
 429                                     ;; is a bug, but it can't hurt to add
 430                                     ;; those two bytes anyway:
 431                                     2)))
 432                      ""))
 433                   (body-part
 434                    (if (member '8bitmime supported-extensions)
 435                        ;; FIXME:
 436                        ;; Code should be added here that transforms
 437                        ;; the contents of the message buffer into
 438                        ;; something the receiving SMTP can handle.
 439                        ;; For a receiver that supports 8BITMIME, this
 440                        ;; may mean converting BINARY to BASE64, or
 441                        ;; adding Content-Transfer-Encoding and the
 442                        ;; other MIME headers.  The code should also
 443                        ;; return an indication of what encoding the
 444                        ;; message buffer is now, i.e. ASCII or
 445                        ;; 8BITMIME.
 446                        (if nil
 447                            " BODY=8BITMIME"
 448                          "")
 449                      "")))
 450 ;             (smtpmail-send-command process (format "MAIL FROM:%s@%s" (user-login-name) (smtpmail-fqdn)))
 451               (smtpmail-send-command process (format "MAIL FROM: <%s>%s%s"
 452                                                      user-mail-address
 453                                                      size-part
 454                                                      body-part))
 455
 456               (if (or (null (car (setq response-code (smtpmail-read-response process))))
 457                       (not (integerp (car response-code)))
 458                       (>= (car response-code) 400))
 459                   (throw 'done nil)
 460                 ))
 461
 462             ;; RCPT TO: <recipient>
 463             (let ((n 0))
 464               (while (not (null (nth n recipient)))
 465                 (smtpmail-send-command process (format "RCPT TO: <%s>" (nth n recipient)))
 466                 (setq n (1+ n))
 467
 468                 (setq response-code (smtpmail-read-response process))
 469                 (if (or (null (car response-code))
 470                         (not (integerp (car response-code)))
 471                         (>= (car response-code) 400))
 472                     (throw 'done nil)
 473                   )
 474                 ))
 475
 476             ;; DATA
 477             (smtpmail-send-command process "DATA")
 478
 479             (if (or (null (car (setq response-code (smtpmail-read-response process))))
 480                     (not (integerp (car response-code)))
 481                     (>= (car response-code) 400))
 482                 (throw 'done nil)
 483               )
 484
 485             ;; Mail contents
 486             (smtpmail-send-data process smtpmail-text-buffer)
 487
 488             ;;DATA end "."
 489             (smtpmail-send-command process ".")
 490
 491             (if (or (null (car (setq response-code (smtpmail-read-response process))))
 492                     (not (integerp (car response-code)))
 493                     (>= (car response-code) 400))
 494                 (throw 'done nil)
 495               )
 496
 497             ;;QUIT
 498 ;           (smtpmail-send-command process "QUIT")
 499 ;           (and (null (car (smtpmail-read-response process)))
 500 ;                (throw 'done nil))
 501             t ))
 502       (if process
 503           (save-excursion
 504             (set-buffer (process-buffer process))
 505             (smtpmail-send-command process "QUIT")
 506             (smtpmail-read-response process)
 507
 508 ;           (if (or (null (car (setq response-code (smtpmail-read-response process))))
 509 ;                   (not (integerp (car response-code)))
 510 ;                   (>= (car response-code) 400))
 511 ;               (throw 'done nil)
 512 ;             )
 513             (delete-process process))))))
 514
 515
 516 (defun smtpmail-process-filter (process output)
 517   (save-excursion
 518     (set-buffer (process-buffer process))
 519     (goto-char (point-max))
 520     (insert output)))
 521
 522 (defun smtpmail-read-response (process)
 523   (let ((case-fold-search nil)
 524         (response-strings nil)
 525         (response-continue t)
 526         (return-value '(nil ()))
 527         match-end)
 528
 529     (while response-continue
 530       (goto-char smtpmail-read-point)
 531       (while (not (search-forward "\r\n" nil t))
 532         (accept-process-output process)
 533         (goto-char smtpmail-read-point))
 534
 535       (setq match-end (point))
 536       (setq response-strings
 537             (cons (buffer-substring smtpmail-read-point (- match-end 2))
 538                   response-strings))
 539
 540       (goto-char smtpmail-read-point)
 541       (if (looking-at "[0-9]+ ")
 542           (let ((begin (match-beginning 0))
 543                 (end (match-end 0)))
 544             (if smtpmail-debug-info
 545                 (message "%s" (car response-strings)))
 546
 547             (setq smtpmail-read-point match-end)
 548
 549             ;; ignore lines that start with "0"
 550             (if (looking-at "0[0-9]+ ")
 551                 nil
 552               (setq response-continue nil)
 553               (setq return-value
 554                     (cons (string-to-int
 555                            (buffer-substring begin end))
 556                           (nreverse response-strings)))))
 557
 558         (if (looking-at "[0-9]+-")
 559             (progn (if smtpmail-debug-info
 560                      (message "%s" (car response-strings)))
 561                    (setq smtpmail-read-point match-end)
 562                    (setq response-continue t))
 563           (progn
 564             (setq smtpmail-read-point match-end)
 565             (setq response-continue nil)
 566             (setq return-value
 567                   (cons nil (nreverse response-strings)))
 568             )
 569           )))
 570     (setq smtpmail-read-point match-end)
 571     return-value))
 572
 573
 574 (defun smtpmail-send-command (process command)
 575   (goto-char (point-max))
 576   (if (= (aref command 0) ?P)
 577       (insert "PASS <omitted>\r\n")
 578     (insert command "\r\n"))
 579   (setq smtpmail-read-point (point))
 580   (process-send-string process command)
 581   (process-send-string process "\r\n"))
 582
 583 (defun smtpmail-send-data-1 (process data)
 584   (goto-char (point-max))
 585
 586   (if (not (null smtpmail-code-conv-from))
 587       (setq data (code-convert-string data smtpmail-code-conv-from *internal*)))
 588
 589   (if smtpmail-debug-info
 590       (insert data "\r\n"))
 591
 592   (setq smtpmail-read-point (point))
 593   ;; Escape "." at start of a line
 594   (if (eq (string-to-char data) ?.)
 595       (process-send-string process "."))
 596   (process-send-string process data)
 597   (process-send-string process "\r\n")
 598   )
 599
 600 (defun smtpmail-send-data (process buffer)
 601   (let
 602       ((data-continue t)
 603        (sending-data nil)
 604        this-line
 605        this-line-end)
 606
 607     (save-excursion
 608       (set-buffer buffer)
 609       (goto-char (point-min)))
 610
 611     (while data-continue
 612       (save-excursion
 613         (set-buffer buffer)
 614         (beginning-of-line)
 615         (setq this-line (point))
 616         (end-of-line)
 617         (setq this-line-end (point))
 618         (setq sending-data nil)
 619         (setq sending-data (buffer-substring this-line this-line-end))
 620         (if (/= (forward-line 1) 0)
 621             (setq data-continue nil)))
 622
 623       (smtpmail-send-data-1 process sending-data)
 624       )
 625     )
 626   )
 627
 628
 629 (defun smtpmail-deduce-address-list (smtpmail-text-buffer header-start header-end)
 630   "Get address list suitable for smtp RCPT TO: <address>."
 631   (require 'mail-utils)  ;; pick up mail-strip-quoted-names
 632   (let
 633       ((case-fold-search t)
 634        (simple-address-list "")
 635        this-line
 636        this-line-end
 637        addr-regexp)
 638
 639     (unwind-protect
 640         (save-excursion
 641           ;;
 642           (set-buffer smtpmail-address-buffer) (erase-buffer)
 643           (insert-buffer-substring smtpmail-text-buffer header-start header-end)
 644           (goto-char (point-min))
 645           ;; RESENT-* fields should stop processing of regular fields.
 646           (save-excursion
 647             (if (re-search-forward "^RESENT-TO:" header-end t)
 648                 (setq addr-regexp "^\\(RESENT-TO:\\|RESENT-CC:\\|RESENT-BCC:\\)")
 649               (setq addr-regexp  "^\\(TO:\\|CC:\\|BCC:\\)")))
 650
 651           (while (re-search-forward addr-regexp header-end t)
 652             (replace-match "")
 653             (setq this-line (match-beginning 0))
 654             (forward-line 1)
 655             ;; get any continuation lines
 656             (while (and (looking-at "^[ \t]+") (< (point) header-end))
 657               (forward-line 1))
 658             (setq this-line-end (point-marker))
 659             (setq simple-address-list
 660                   (concat simple-address-list " "
 661                           (mail-strip-quoted-names (buffer-substring this-line this-line-end))))
 662             )
 663           (erase-buffer)
 664           (insert-string " ")
 665           (insert-string simple-address-list)
 666           (insert-string "\n")
 667           (subst-char-in-region (point-min) (point-max) 10 ?  t);; newline --> blank
 668           (subst-char-in-region (point-min) (point-max) ?, ?  t);; comma   --> blank
 669           (subst-char-in-region (point-min) (point-max)  9 ?  t);; tab     --> blank
 670
 671           (goto-char (point-min))
 672           ;; tidyness in case hook is not robust when it looks at this
 673           (while (re-search-forward "[ \t]+" header-end t) (replace-match " "))
 674
 675           (goto-char (point-min))
 676           (let (recipient-address-list)
 677             (while (re-search-forward " \\([^ ]+\\) " (point-max) t)
 678               (backward-char 1)
 679               (setq recipient-address-list (cons (buffer-substring (match-beginning 1) (match-end 1))
 680                                                  recipient-address-list))
 681               )
 682             (setq smtpmail-recipient-address-list recipient-address-list))
 683
 684           )
 685       )
 686     )
 687   )
 688
 689
 690 (defun smtpmail-do-bcc (header-end)
 691   "Delete BCC: and their continuation lines from the header area.
 692 There may be multiple BCC: lines, and each may have arbitrarily
 693 many continuation lines."
 694   (let ((case-fold-search t))
 695         (save-excursion (goto-char (point-min))
 696           ;; iterate over all BCC: lines
 697           (while (re-search-forward "^BCC:" header-end t)
 698                 (delete-region (match-beginning 0) (progn (forward-line 1) (point)))
 699                 ;; get rid of any continuation lines
 700                 (while (and (looking-at "^[ \t].*\n") (< (point) header-end))
 701                   (replace-match ""))
 702                 )
 703           ) ;; save-excursion
 704         ) ;; let
 705   )
 706
 707
 708
 709 (provide 'smtpmail)
 710
 711 ;;; smtpmail.el ends here