code.delx.au - gnu-emacs/blob - lisp/mail/smtpmail.el

   1 ;;; smtpmail.el --- simple SMTP protocol (RFC 821) for sending mail
   2 ;;; ### Hacked by Mike Taylor, 11th October 1999 to add support for
   3 ;;;     automatically appending a domain to RCPT TO: addresses.
   4
   5 ;; Copyright (C) 1995, 1996 Free Software Foundation, Inc.
   6
   7 ;; Author: Tomoji Kagatani <kagatani@rbc.ncl.omron.co.jp>
   8 ;; Maintainer: Brian D. Carlstrom <bdc@ai.mit.edu>
   9 ;; ESMTP support: Simon Leinen <simon@switch.ch>
  10 ;; Keywords: mail
  11
  12 ;; This file is part of GNU Emacs.
  13
  14 ;; GNU Emacs is free software; you can redistribute it and/or modify
  15 ;; it under the terms of the GNU General Public License as published by
  16 ;; the Free Software Foundation; either version 2, or (at your option)
  17 ;; any later version.
  18
  19 ;; GNU Emacs is distributed in the hope that it will be useful,
  20 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22 ;; GNU General Public License for more details.
  23
  24 ;; You should have received a copy of the GNU General Public License
  25 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  26 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  27 ;; Boston, MA 02111-1307, USA.
  28
  29 ;;; Commentary:
  30
  31 ;; Send Mail to smtp host from smtpmail temp buffer.
  32
  33 ;; Please add these lines in your .emacs(_emacs) or use customize.
  34 ;;
  35 ;;(setq send-mail-function 'smtpmail-send-it) ; if you use `mail'
  36 ;;(setq message-send-mail-function 'smtpmail-send-it) ; if you use `message'
  37 ;;(setq smtpmail-default-smtp-server "YOUR SMTP HOST")
  38 ;;(setq smtpmail-local-domain "YOUR DOMAIN NAME")
  39 ;;(setq smtpmail-sendto-domain "YOUR DOMAIN NAME")
  40 ;;(setq smtpmail-debug-info t) ; only to debug problems
  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-sendto-domain nil
  81   "*Local domain name without a host name.
  82 This is appended (with an @-sign) to any specified recipients which do
  83 not include an @-sign, so that each RCPT TO address is fully qualified.
  84 \(Some configurations of sendmail require this.)
  85
  86 Don't bother to set this unless you have get an error like:
  87         Sending failed; SMTP protocol error
  88 when sending mail, and the *trace of SMTP session to <somewhere>*
  89 buffer includes an exchange like:
  90         RCPT TO: <someone>
  91         501 <someone>: recipient address must contain a domain
  92 "
  93   :type '(choice (const nil) string)
  94   :group 'smtpmail)
  95
  96 (defun maybe-append-domain (recipient)
  97   (if (or (not smtpmail-sendto-domain)
  98           (string-match "@" recipient))
  99       recipient
 100     (concat recipient "@" smtpmail-sendto-domain)))
 101
 102 (defcustom smtpmail-debug-info nil
 103   "*smtpmail debug info printout. messages and process buffer."
 104   :type 'boolean
 105   :group 'smtpmail)
 106
 107 (defcustom smtpmail-code-conv-from nil ;; *junet*
 108   "*smtpmail code convert from this code to *internal*..for tiny-mime.."
 109   :type 'boolean
 110   :group 'smtpmail)
 111
 112 (defcustom smtpmail-queue-mail nil
 113   "*Specify if mail is queued (if t) or sent immediately (if nil).
 114 If queued, it is stored in the directory `smtpmail-queue-dir'
 115 and sent with `smtpmail-send-queued-mail'."
 116   :type 'boolean
 117   :group 'smtpmail)
 118
 119 (defcustom smtpmail-queue-dir "~/Mail/queued-mail/"
 120   "*Directory where `smtpmail.el' stores queued mail."
 121   :type 'directory
 122   :group 'smtpmail)
 123
 124 (defvar smtpmail-queue-index-file "index"
 125   "File name of queued mail index,
 126 This is relative to `smtpmail-queue-dir'.")
 127
 128 (defvar smtpmail-address-buffer)
 129 (defvar smtpmail-recipient-address-list)
 130
 131 ;; Buffer-local variable.
 132 (defvar smtpmail-read-point)
 133
 134 (defvar smtpmail-queue-index (concat smtpmail-queue-dir
 135                                      smtpmail-queue-index-file))
 136
 137 ;;;
 138 ;;;
 139 ;;;
 140
 141 ;;;###autoload
 142 (defun smtpmail-send-it ()
 143   (require 'mail-utils)
 144   (let ((errbuf (if mail-interactive
 145                     (generate-new-buffer " smtpmail errors")
 146                   0))
 147         (tembuf (generate-new-buffer " smtpmail temp"))
 148         (case-fold-search nil)
 149         delimline
 150         (mailbuf (current-buffer))
 151         (smtpmail-code-conv-from
 152          (if enable-multibyte-characters
 153              (let ((sendmail-coding-system smtpmail-code-conv-from))
 154                (select-message-coding-system)))))
 155     (unwind-protect
 156         (save-excursion
 157           (set-buffer tembuf)
 158           (erase-buffer)
 159           (insert-buffer-substring mailbuf)
 160           (goto-char (point-max))
 161           ;; require one newline at the end.
 162           (or (= (preceding-char) ?\n)
 163               (insert ?\n))
 164           ;; Change header-delimiter to be what sendmail expects.
 165           (mail-sendmail-undelimit-header)
 166           (setq delimline (point-marker))
 167 ;;        (sendmail-synch-aliases)
 168           (if mail-aliases
 169               (expand-mail-aliases (point-min) delimline))
 170           (goto-char (point-min))
 171           ;; ignore any blank lines in the header
 172           (while (and (re-search-forward "\n\n\n*" delimline t)
 173                       (< (point) delimline))
 174             (replace-match "\n"))
 175           (let ((case-fold-search t))
 176             ;; We used to process Resent-... headers here,
 177             ;; but it was not done properly, and the job
 178             ;; is done correctly in smtpmail-deduce-address-list.
 179             ;; Don't send out a blank subject line
 180             (goto-char (point-min))
 181             (if (re-search-forward "^Subject:\\([ \t]*\n\\)+\\b" delimline t)
 182                 (replace-match "")
 183               ;; This one matches a Subject just before the header delimiter.
 184               (if (and (re-search-forward "^Subject:\\([ \t]*\n\\)+" delimline t)
 185                        (= (match-end 0) delimline))
 186                   (replace-match "")))
 187             ;; Put the "From:" field in unless for some odd reason
 188             ;; they put one in themselves.
 189             (goto-char (point-min))
 190             (if (not (re-search-forward "^From:" delimline t))
 191                 (let* ((login user-mail-address)
 192                        (fullname (user-full-name)))
 193                   (cond ((eq mail-from-style 'angles)
 194                          (insert "From: " fullname)
 195                          (let ((fullname-start (+ (point-min) 6))
 196                                (fullname-end (point-marker)))
 197                            (goto-char fullname-start)
 198                            ;; Look for a character that cannot appear unquoted
 199                            ;; according to RFC 822.
 200                            (if (re-search-forward "[^- !#-'*+/-9=?A-Z^-~]"
 201                                                   fullname-end 1)
 202                                (progn
 203                                  ;; Quote fullname, escaping specials.
 204                                  (goto-char fullname-start)
 205                                  (insert "\"")
 206                                  (while (re-search-forward "[\"\\]"
 207                                                            fullname-end 1)
 208                                    (replace-match "\\\\\\&" t))
 209                                  (insert "\""))))
 210                          (insert " <" login ">\n"))
 211                         ((eq mail-from-style 'parens)
 212                          (insert "From: " login " (")
 213                          (let ((fullname-start (point)))
 214                            (insert fullname)
 215                            (let ((fullname-end (point-marker)))
 216                              (goto-char fullname-start)
 217                              ;; RFC 822 says \ and nonmatching parentheses
 218                              ;; must be escaped in comments.
 219                              ;; Escape every instance of ()\ ...
 220                              (while (re-search-forward "[()\\]" fullname-end 1)
 221                                (replace-match "\\\\\\&" t))
 222                              ;; ... then undo escaping of matching parentheses,
 223                              ;; including matching nested parentheses.
 224                              (goto-char fullname-start)
 225                              (while (re-search-forward
 226                                      "\\(\\=\\|[^\\]\\(\\\\\\\\\\)*\\)\\\\(\\(\\([^\\]\\|\\\\\\\\\\)*\\)\\\\)"
 227                                      fullname-end 1)
 228                                (replace-match "\\1(\\3)" t)
 229                                (goto-char fullname-start))))
 230                          (insert ")\n"))
 231                         ((null mail-from-style)
 232                          (insert "From: " login "\n")))))
 233             ;; Insert an extra newline if we need it to work around
 234             ;; Sun's bug that swallows newlines.
 235             (goto-char (1+ delimline))
 236             (if (eval mail-mailer-swallows-blank-line)
 237                 (newline))
 238             ;; Find and handle any FCC fields.
 239             (goto-char (point-min))
 240             (if (re-search-forward "^FCC:" delimline t)
 241                 (mail-do-fcc delimline))
 242             (if mail-interactive
 243                 (save-excursion
 244                   (set-buffer errbuf)
 245                   (erase-buffer))))
 246           ;;
 247           ;;
 248           ;;
 249           (setq smtpmail-address-buffer (generate-new-buffer "*smtp-mail*"))
 250           (setq smtpmail-recipient-address-list
 251                     (smtpmail-deduce-address-list tembuf (point-min) delimline))
 252           (kill-buffer smtpmail-address-buffer)
 253
 254           (smtpmail-do-bcc delimline)
 255           ; Send or queue
 256           (if (not smtpmail-queue-mail)
 257               (if (not (null smtpmail-recipient-address-list))
 258                   (if (not (smtpmail-via-smtp
 259                             smtpmail-recipient-address-list tembuf))
 260                       (error "Sending failed; SMTP protocol error"))
 261                 (error "Sending failed; no recipients"))
 262             (let* ((file-data (concat
 263                                smtpmail-queue-dir
 264                                (concat (time-stamp-yyyy-mm-dd)
 265                                        "_" (time-stamp-hh:mm:ss))))
 266                       (file-data (convert-standard-filename file-data))
 267                       (file-elisp (concat file-data ".el"))
 268                    (buffer-data (create-file-buffer file-data))
 269                    (buffer-elisp (create-file-buffer file-elisp))
 270                    (buffer-scratch "*queue-mail*"))
 271               (save-excursion
 272                 (set-buffer buffer-data)
 273                 (erase-buffer)
 274                 (insert-buffer tembuf)
 275                 (write-file file-data)
 276                 (set-buffer buffer-elisp)
 277                 (erase-buffer)
 278                 (insert (concat
 279                          "(setq smtpmail-recipient-address-list '"
 280                          (prin1-to-string smtpmail-recipient-address-list)
 281                          ")\n"))
 282                 (write-file file-elisp)
 283                 (set-buffer (generate-new-buffer buffer-scratch))
 284                 (insert (concat file-data "\n"))
 285                 (append-to-file (point-min)
 286                                 (point-max)
 287                                 smtpmail-queue-index)
 288                 )
 289               (kill-buffer buffer-scratch)
 290               (kill-buffer buffer-data)
 291               (kill-buffer buffer-elisp))))
 292       (kill-buffer tembuf)
 293       (if (bufferp errbuf)
 294           (kill-buffer errbuf)))))
 295
 296 (defun smtpmail-send-queued-mail ()
 297   "Send mail that was queued as a result of setting `smtpmail-queue-mail'."
 298   (interactive)
 299   ;;; Get index, get first mail, send it, get second mail, etc...
 300   (let ((buffer-index (find-file-noselect smtpmail-queue-index))
 301         (file-msg "")
 302         (tembuf nil))
 303     (save-excursion
 304       (set-buffer buffer-index)
 305       (beginning-of-buffer)
 306       (while (not (eobp))
 307         (setq file-msg (buffer-substring (point) (save-excursion
 308                                                    (end-of-line)
 309                                                    (point))))
 310         (load file-msg)
 311         (setq tembuf (find-file-noselect file-msg))
 312         (if (not (null smtpmail-recipient-address-list))
 313             (if (not (smtpmail-via-smtp smtpmail-recipient-address-list
 314                                         tembuf))
 315                 (error "Sending failed; SMTP protocol error"))
 316           (error "Sending failed; no recipients"))
 317         (delete-file file-msg)
 318         (delete-file (concat file-msg ".el"))
 319         (kill-buffer tembuf)
 320         (kill-line 1))
 321       (set-buffer buffer-index)
 322       (save-buffer smtpmail-queue-index)
 323       (kill-buffer buffer-index)
 324       )))
 325
 326 ;(defun smtpmail-via-smtp (host,port,sender,destination,smtpmail-text-buffer)
 327
 328 (defun smtpmail-fqdn ()
 329   (if smtpmail-local-domain
 330       (concat (system-name) "." smtpmail-local-domain)
 331     (system-name)))
 332
 333 (defun smtpmail-via-smtp (recipient smtpmail-text-buffer)
 334   (let ((process nil)
 335         (host (or smtpmail-smtp-server
 336                   (error "`smtpmail-smtp-server' not defined")))
 337         (port smtpmail-smtp-service)
 338         response-code
 339         greeting
 340         process-buffer
 341         (supported-extensions '()))
 342     (unwind-protect
 343         (catch 'done
 344           ;; get or create the trace buffer
 345           (setq process-buffer
 346                 (get-buffer-create (format "*trace of SMTP session to %s*" host)))
 347
 348           ;; clear the trace buffer of old output
 349           (save-excursion
 350             (set-buffer process-buffer)
 351             (erase-buffer))
 352
 353           ;; open the connection to the server
 354           (setq process (open-network-stream "SMTP" process-buffer host port))
 355           (and (null process) (throw 'done nil))
 356
 357           ;; set the send-filter
 358           (set-process-filter process 'smtpmail-process-filter)
 359
 360           (save-excursion
 361             (set-buffer process-buffer)
 362             (set-buffer-process-coding-system 'raw-text-unix 'raw-text-unix)
 363             (make-local-variable 'smtpmail-read-point)
 364             (setq smtpmail-read-point (point-min))
 365
 366
 367             (if (or (null (car (setq greeting (smtpmail-read-response process))))
 368                     (not (integerp (car greeting)))
 369                     (>= (car greeting) 400))
 370                 (throw 'done nil)
 371               )
 372
 373             ;; EHLO
 374             (smtpmail-send-command process (format "EHLO %s" (smtpmail-fqdn)))
 375
 376             (if (or (null (car (setq response-code (smtpmail-read-response process))))
 377                     (not (integerp (car response-code)))
 378                     (>= (car response-code) 400))
 379                 (progn
 380                   ;; HELO
 381                   (smtpmail-send-command process (format "HELO %s" (smtpmail-fqdn)))
 382
 383                   (if (or (null (car (setq response-code (smtpmail-read-response process))))
 384                           (not (integerp (car response-code)))
 385                           (>= (car response-code) 400))
 386                       (throw 'done nil)))
 387               (let ((extension-lines (cdr (cdr response-code))))
 388                 (while extension-lines
 389                   (let ((name (intern (downcase (car (split-string (substring (car extension-lines) 4) "[ ]"))))))
 390                     (and name
 391                          (cond ((memq name '(verb xvrb 8bitmime onex xone
 392                                                   expn size dsn etrn
 393                                                   help xusr))
 394                                 (setq supported-extensions
 395                                       (cons name supported-extensions)))
 396                                (t (message "unknown extension %s"
 397                                            name)))))
 398                   (setq extension-lines (cdr extension-lines)))))
 399
 400             (if (or (member 'onex supported-extensions)
 401                     (member 'xone supported-extensions))
 402                 (progn
 403                   (smtpmail-send-command process (format "ONEX"))
 404                   (if (or (null (car (setq response-code (smtpmail-read-response process))))
 405                           (not (integerp (car response-code)))
 406                           (>= (car response-code) 400))
 407                       (throw 'done nil))))
 408
 409             (if (and smtpmail-debug-info
 410                      (or (member 'verb supported-extensions)
 411                          (member 'xvrb supported-extensions)))
 412                 (progn
 413                   (smtpmail-send-command process (format "VERB"))
 414                   (if (or (null (car (setq response-code (smtpmail-read-response process))))
 415                           (not (integerp (car response-code)))
 416                           (>= (car response-code) 400))
 417                       (throw 'done nil))))
 418
 419             (if (member 'xusr supported-extensions)
 420                 (progn
 421                   (smtpmail-send-command process (format "XUSR"))
 422                   (if (or (null (car (setq response-code (smtpmail-read-response process))))
 423                           (not (integerp (car response-code)))
 424                           (>= (car response-code) 400))
 425                       (throw 'done nil))))
 426
 427             ;; MAIL FROM: <sender>
 428             (let ((size-part
 429                    (if (member 'size supported-extensions)
 430                        (format " SIZE=%d"
 431                                (save-excursion
 432                                  (set-buffer smtpmail-text-buffer)
 433                                  ;; size estimate:
 434                                  (+ (- (point-max) (point-min))
 435                                     ;; Add one byte for each change-of-line
 436                                     ;; because or CR-LF representation:
 437                                     (count-lines (point-min) (point-max))
 438                                     ;; For some reason, an empty line is
 439                                     ;; added to the message.  Maybe this
 440                                     ;; is a bug, but it can't hurt to add
 441                                     ;; those two bytes anyway:
 442                                     2)))
 443                      ""))
 444                   (body-part
 445                    (if (member '8bitmime supported-extensions)
 446                        ;; FIXME:
 447                        ;; Code should be added here that transforms
 448                        ;; the contents of the message buffer into
 449                        ;; something the receiving SMTP can handle.
 450                        ;; For a receiver that supports 8BITMIME, this
 451                        ;; may mean converting BINARY to BASE64, or
 452                        ;; adding Content-Transfer-Encoding and the
 453                        ;; other MIME headers.  The code should also
 454                        ;; return an indication of what encoding the
 455                        ;; message buffer is now, i.e. ASCII or
 456                        ;; 8BITMIME.
 457                        (if nil
 458                            " BODY=8BITMIME"
 459                          "")
 460                      "")))
 461 ;             (smtpmail-send-command process (format "MAIL FROM:%s@%s" (user-login-name) (smtpmail-fqdn)))
 462               (smtpmail-send-command process (format "MAIL FROM: <%s>%s%s"
 463                                                      user-mail-address
 464                                                      size-part
 465                                                      body-part))
 466
 467               (if (or (null (car (setq response-code (smtpmail-read-response process))))
 468                       (not (integerp (car response-code)))
 469                       (>= (car response-code) 400))
 470                   (throw 'done nil)
 471                 ))
 472
 473             ;; RCPT TO: <recipient>
 474             (let ((n 0))
 475               (while (not (null (nth n recipient)))
 476                 (smtpmail-send-command process (format "RCPT TO: <%s>" (maybe-append-domain (nth n recipient))))
 477                 (setq n (1+ n))
 478
 479                 (setq response-code (smtpmail-read-response process))
 480                 (if (or (null (car response-code))
 481                         (not (integerp (car response-code)))
 482                         (>= (car response-code) 400))
 483                     (throw 'done nil)
 484                   )
 485                 ))
 486
 487             ;; DATA
 488             (smtpmail-send-command process "DATA")
 489
 490             (if (or (null (car (setq response-code (smtpmail-read-response process))))
 491                     (not (integerp (car response-code)))
 492                     (>= (car response-code) 400))
 493                 (throw 'done nil)
 494               )
 495
 496             ;; Mail contents
 497             (smtpmail-send-data process smtpmail-text-buffer)
 498
 499             ;;DATA end "."
 500             (smtpmail-send-command process ".")
 501
 502             (if (or (null (car (setq response-code (smtpmail-read-response process))))
 503                     (not (integerp (car response-code)))
 504                     (>= (car response-code) 400))
 505                 (throw 'done nil)
 506               )
 507
 508             ;;QUIT
 509 ;           (smtpmail-send-command process "QUIT")
 510 ;           (and (null (car (smtpmail-read-response process)))
 511 ;                (throw 'done nil))
 512             t ))
 513       (if process
 514           (save-excursion
 515             (set-buffer (process-buffer process))
 516             (smtpmail-send-command process "QUIT")
 517             (smtpmail-read-response process)
 518
 519 ;           (if (or (null (car (setq response-code (smtpmail-read-response process))))
 520 ;                   (not (integerp (car response-code)))
 521 ;                   (>= (car response-code) 400))
 522 ;               (throw 'done nil)
 523 ;             )
 524             (delete-process process))))))
 525
 526
 527 (defun smtpmail-process-filter (process output)
 528   (save-excursion
 529     (set-buffer (process-buffer process))
 530     (goto-char (point-max))
 531     (insert output)))
 532
 533 (defun smtpmail-read-response (process)
 534   (let ((case-fold-search nil)
 535         (response-strings nil)
 536         (response-continue t)
 537         (return-value '(nil ()))
 538         match-end)
 539
 540     (while response-continue
 541       (goto-char smtpmail-read-point)
 542       (while (not (search-forward "\r\n" nil t))
 543         (accept-process-output process)
 544         (goto-char smtpmail-read-point))
 545
 546       (setq match-end (point))
 547       (setq response-strings
 548             (cons (buffer-substring smtpmail-read-point (- match-end 2))
 549                   response-strings))
 550
 551       (goto-char smtpmail-read-point)
 552       (if (looking-at "[0-9]+ ")
 553           (let ((begin (match-beginning 0))
 554                 (end (match-end 0)))
 555             (if smtpmail-debug-info
 556                 (message "%s" (car response-strings)))
 557
 558             (setq smtpmail-read-point match-end)
 559
 560             ;; ignore lines that start with "0"
 561             (if (looking-at "0[0-9]+ ")
 562                 nil
 563               (setq response-continue nil)
 564               (setq return-value
 565                     (cons (string-to-int
 566                            (buffer-substring begin end))
 567                           (nreverse response-strings)))))
 568
 569         (if (looking-at "[0-9]+-")
 570             (progn (if smtpmail-debug-info
 571                      (message "%s" (car response-strings)))
 572                    (setq smtpmail-read-point match-end)
 573                    (setq response-continue t))
 574           (progn
 575             (setq smtpmail-read-point match-end)
 576             (setq response-continue nil)
 577             (setq return-value
 578                   (cons nil (nreverse response-strings)))
 579             )
 580           )))
 581     (setq smtpmail-read-point match-end)
 582     return-value))
 583
 584
 585 (defun smtpmail-send-command (process command)
 586   (goto-char (point-max))
 587   (if (= (aref command 0) ?P)
 588       (insert "PASS <omitted>\r\n")
 589     (insert command "\r\n"))
 590   (setq smtpmail-read-point (point))
 591   (process-send-string process command)
 592   (process-send-string process "\r\n"))
 593
 594 (defun smtpmail-send-data-1 (process data)
 595   (goto-char (point-max))
 596
 597   (if (and (multibyte-string-p data)
 598            smtpmail-code-conv-from)
 599       (setq data (string-as-multibyte
 600                   (encode-coding-string data smtpmail-code-conv-from))))
 601
 602   (if smtpmail-debug-info
 603       (insert data "\r\n"))
 604
 605   (setq smtpmail-read-point (point))
 606   ;; Escape "." at start of a line
 607   (if (eq (string-to-char data) ?.)
 608       (process-send-string process "."))
 609   (process-send-string process data)
 610   (process-send-string process "\r\n")
 611   )
 612
 613 (defun smtpmail-send-data (process buffer)
 614   (let
 615       ((data-continue t)
 616        (sending-data nil)
 617        this-line
 618        this-line-end)
 619
 620     (save-excursion
 621       (set-buffer buffer)
 622       (goto-char (point-min)))
 623
 624     (while data-continue
 625       (save-excursion
 626         (set-buffer buffer)
 627         (beginning-of-line)
 628         (setq this-line (point))
 629         (end-of-line)
 630         (setq this-line-end (point))
 631         (setq sending-data nil)
 632         (setq sending-data (buffer-substring this-line this-line-end))
 633         (if (/= (forward-line 1) 0)
 634             (setq data-continue nil)))
 635
 636       (smtpmail-send-data-1 process sending-data)
 637       )
 638     )
 639   )
 640
 641
 642 (defun smtpmail-deduce-address-list (smtpmail-text-buffer header-start header-end)
 643   "Get address list suitable for smtp RCPT TO: <address>."
 644   (require 'mail-utils)  ;; pick up mail-strip-quoted-names
 645
 646   (unwind-protect
 647       (save-excursion
 648         (set-buffer smtpmail-address-buffer) (erase-buffer)
 649         (let
 650             ((case-fold-search t)
 651              (simple-address-list "")
 652              this-line
 653              this-line-end
 654              addr-regexp)
 655           (insert-buffer-substring smtpmail-text-buffer header-start header-end)
 656           (goto-char (point-min))
 657           ;; RESENT-* fields should stop processing of regular fields.
 658           (save-excursion
 659             (if (re-search-forward "^Resent-\\(to\\|cc\\|bcc\\):" header-end t)
 660                 (setq addr-regexp "^Resent-\\(to\\|cc\\|bcc\\):")
 661               (setq addr-regexp  "^\\(To:\\|Cc:\\|Bcc:\\)")))
 662
 663           (while (re-search-forward addr-regexp header-end t)
 664             (replace-match "")
 665             (setq this-line (match-beginning 0))
 666             (forward-line 1)
 667             ;; get any continuation lines
 668             (while (and (looking-at "^[ \t]+") (< (point) header-end))
 669               (forward-line 1))
 670             (setq this-line-end (point-marker))
 671             (setq simple-address-list
 672                   (concat simple-address-list " "
 673                           (mail-strip-quoted-names (buffer-substring this-line this-line-end))))
 674             )
 675           (erase-buffer)
 676           (insert-string " ")
 677           (insert-string simple-address-list)
 678           (insert-string "\n")
 679           (subst-char-in-region (point-min) (point-max) 10 ?  t);; newline --> blank
 680           (subst-char-in-region (point-min) (point-max) ?, ?  t);; comma   --> blank
 681           (subst-char-in-region (point-min) (point-max)  9 ?  t);; tab     --> blank
 682
 683           (goto-char (point-min))
 684           ;; tidyness in case hook is not robust when it looks at this
 685           (while (re-search-forward "[ \t]+" header-end t) (replace-match " "))
 686
 687           (goto-char (point-min))
 688           (let (recipient-address-list)
 689             (while (re-search-forward " \\([^ ]+\\) " (point-max) t)
 690               (backward-char 1)
 691               (setq recipient-address-list (cons (buffer-substring (match-beginning 1) (match-end 1))
 692                                                  recipient-address-list))
 693               )
 694             (setq smtpmail-recipient-address-list recipient-address-list))
 695
 696           )
 697         )
 698     )
 699   )
 700
 701
 702 (defun smtpmail-do-bcc (header-end)
 703   "Delete [Resent-]BCC: and their continuation lines from the header area.
 704 There may be multiple BCC: lines, and each may have arbitrarily
 705 many continuation lines."
 706   (let ((case-fold-search t))
 707     (save-excursion
 708       (goto-char (point-min))
 709       ;; iterate over all BCC: lines
 710       (while (re-search-forward "^\\(RESENT-\\)?BCC:" header-end t)
 711         (delete-region (match-beginning 0)
 712                        (progn (forward-line 1) (point)))
 713         ;; get rid of any continuation lines
 714         (while (and (looking-at "^[ \t].*\n") (< (point) header-end))
 715           (replace-match ""))))))
 716
 717
 718 (provide 'smtpmail)
 719
 720 ;;; smtpmail.el ends here