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comparison lisp/utils/smtpmail.el @ 4:b82b59fe008d r19-15b3

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date Mon, 13 Aug 2007 08:46:56 +0200
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3:30df88044ec6 4:b82b59fe008d
1 ;; 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 ;; Keywords: mail
8
9 ;; This file is part of XEmacs.
10
11 ;; XEmacs is free software; you can redistribute it and/or modify it
12 ;; under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; any later version.
15
16 ;; XEmacs is distributed in the hope that it will be useful, but
17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 ;; General Public License for more details.
20
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with XEmacs; see the file COPYING. If not, write to the Free
23 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
24 ;; 02111-1307, USA.
25
26 ;;; Synched up with: FSF 19.34.
27
28 ;;; Commentary:
29
30 ;; Send Mail to smtp host from smtpmail temp buffer.
31
32 ;; Please add these lines in your .emacs(_emacs).
33 ;;
34 ;;(setq send-mail-function 'smtpmail-send-it)
35 ;;(setq smtpmail-default-smtp-server "YOUR SMTP HOST")
36 ;;(setq smtpmail-smtp-service "smtp")
37 ;;(setq smtpmail-local-domain "YOUR DOMAIN NAME")
38 ;;(setq smtpmail-debug-info t)
39 ;;(load-library "smtpmail")
40 ;;(setq smtpmail-code-conv-from nil)
41 ;;(setq user-full-name "YOUR NAME HERE")
42
43 ;;; Code:
44
45 (require 'sendmail)
46
47 ;;;
48 (defvar smtpmail-default-smtp-server nil
49 "*Specify default SMTP server.")
50
51 (defvar smtpmail-smtp-server
52 (or (getenv "SMTPSERVER") smtpmail-default-smtp-server)
53 "*The name of the host running SMTP server.")
54
55 (defvar smtpmail-smtp-service 25
56 "*SMTP service port number. smtp or 25 .")
57
58 (defvar smtpmail-local-domain nil
59 "*Local domain name without a host name.
60 If the function (system-name) returns the full internet address,
61 don't define this value.")
62
63 (defvar smtpmail-debug-info nil
64 "*smtpmail debug info printout. messages and process buffer.")
65
66 (defvar smtpmail-code-conv-from nil ;; *junet*
67 "*smtpmail code convert from this code to *internal*..for tiny-mime..")
68
69 ;;;
70 ;;;
71 ;;;
72
73 (defun smtpmail-send-it ()
74 (require 'mail-utils)
75 (let ((errbuf (if mail-interactive
76 (generate-new-buffer " smtpmail errors")
77 0))
78 (tembuf (generate-new-buffer " smtpmail temp"))
79 (case-fold-search nil)
80 resend-to-addresses
81 delimline
82 (mailbuf (current-buffer)))
83 (unwind-protect
84 (save-excursion
85 (set-buffer tembuf)
86 (erase-buffer)
87 (insert-buffer-substring mailbuf)
88 (goto-char (point-max))
89 ;; require one newline at the end.
90 (or (= (preceding-char) ?\n)
91 (insert ?\n))
92 ;; Change header-delimiter to be what sendmail expects.
93 (goto-char (point-min))
94 (re-search-forward
95 (concat "^" (regexp-quote mail-header-separator) "\n"))
96 (replace-match "\n")
97 (backward-char 1)
98 (setq delimline (point-marker))
99 ;; (sendmail-synch-aliases)
100 (if (and mail-aliases (fboundp expand-mail-aliases)) ; XEmacs
101 (expand-mail-aliases (point-min) delimline))
102 (goto-char (point-min))
103 ;; ignore any blank lines in the header
104 (while (and (re-search-forward "\n\n\n*" delimline t)
105 (< (point) delimline))
106 (replace-match "\n"))
107 (let ((case-fold-search t))
108 (goto-char (point-min))
109 (goto-char (point-min))
110 (while (re-search-forward "^Resent-to:" delimline t)
111 (setq resend-to-addresses
112 (save-restriction
113 (narrow-to-region (point)
114 (save-excursion
115 (end-of-line)
116 (point)))
117 (append (mail-parse-comma-list)
118 resend-to-addresses))))
119 ;;; Apparently this causes a duplicate Sender.
120 ;;; ;; If the From is different than current user, insert Sender.
121 ;;; (goto-char (point-min))
122 ;;; (and (re-search-forward "^From:" delimline t)
123 ;;; (progn
124 ;;; (require 'mail-utils)
125 ;;; (not (string-equal
126 ;;; (mail-strip-quoted-names
127 ;;; (save-restriction
128 ;;; (narrow-to-region (point-min) delimline)
129 ;;; (mail-fetch-field "From")))
130 ;;; (user-login-name))))
131 ;;; (progn
132 ;;; (forward-line 1)
133 ;;; (insert "Sender: " (user-login-name) "\n")))
134 ;; Don't send out a blank subject line
135 (goto-char (point-min))
136 (if (re-search-forward "^Subject:[ \t]*\n" delimline t)
137 (replace-match ""))
138 ;; Put the "From:" field in unless for some odd reason
139 ;; they put one in themselves.
140 (goto-char (point-min))
141 (if (not (re-search-forward "^From:" delimline t))
142 (let* ((login user-mail-address)
143 (fullname (user-full-name)))
144 (cond ((eq mail-from-style 'angles)
145 (insert "From: " fullname)
146 (let ((fullname-start (+ (point-min) 6))
147 (fullname-end (point-marker)))
148 (goto-char fullname-start)
149 ;; Look for a character that cannot appear unquoted
150 ;; according to RFC 822.
151 (if (re-search-forward "[^- !#-'*+/-9=?A-Z^-~]"
152 fullname-end 1)
153 (progn
154 ;; Quote fullname, escaping specials.
155 (goto-char fullname-start)
156 (insert "\"")
157 (while (re-search-forward "[\"\\]"
158 fullname-end 1)
159 (replace-match "\\\\\\&" t))
160 (insert "\""))))
161 (insert " <" login ">\n"))
162 ((eq mail-from-style 'parens)
163 (insert "From: " login " (")
164 (let ((fullname-start (point)))
165 (insert fullname)
166 (let ((fullname-end (point-marker)))
167 (goto-char fullname-start)
168 ;; RFC 822 says \ and nonmatching parentheses
169 ;; must be escaped in comments.
170 ;; Escape every instance of ()\ ...
171 (while (re-search-forward "[()\\]" fullname-end 1)
172 (replace-match "\\\\\\&" t))
173 ;; ... then undo escaping of matching parentheses,
174 ;; including matching nested parentheses.
175 (goto-char fullname-start)
176 (while (re-search-forward
177 "\\(\\=\\|[^\\]\\(\\\\\\\\\\)*\\)\\\\(\\(\\([^\\]\\|\\\\\\\\\\)*\\)\\\\)"
178 fullname-end 1)
179 (replace-match "\\1(\\3)" t)
180 (goto-char fullname-start))))
181 (insert ")\n"))
182 ((null mail-from-style)
183 (insert "From: " login "\n")))))
184 ;; Insert an extra newline if we need it to work around
185 ;; Sun's bug that swallows newlines.
186 (goto-char (1+ delimline))
187 (if (eval mail-mailer-swallows-blank-line)
188 (newline))
189 ;; Find and handle any FCC fields.
190 (goto-char (point-min))
191 (if (re-search-forward "^FCC:" delimline t)
192 (mail-do-fcc delimline))
193 (if mail-interactive
194 (save-excursion
195 (set-buffer errbuf)
196 (erase-buffer))))
197 ;;
198 ;;
199 ;;
200 (setq smtpmail-address-buffer (generate-new-buffer "*smtp-mail*"))
201 (setq smtpmail-recipient-address-list
202 (or resend-to-addresses
203 (smtpmail-deduce-address-list tembuf (point-min) delimline)))
204 (kill-buffer smtpmail-address-buffer)
205
206 (smtpmail-do-bcc delimline)
207
208 (if (not (null smtpmail-recipient-address-list))
209 (if (not (smtpmail-via-smtp smtpmail-recipient-address-list tembuf))
210 (error "Sending failed; SMTP protocol error"))
211 (error "Sending failed; no recipients"))
212 )
213 (kill-buffer tembuf)
214 (if (bufferp errbuf)
215 (kill-buffer errbuf)))))
216
217
218 ;(defun smtpmail-via-smtp (host,port,sender,destination,smtpmail-text-buffer)
219
220 (defun smtpmail-fqdn ()
221 (if smtpmail-local-domain
222 (concat (system-name) "." smtpmail-local-domain)
223 (system-name)))
224
225 (defun smtpmail-via-smtp (recipient smtpmail-text-buffer)
226 (let ((process nil)
227 (host smtpmail-smtp-server)
228 (port smtpmail-smtp-service)
229 response-code
230 greeting
231 process-buffer)
232 (unwind-protect
233 (catch 'done
234 ;; get or create the trace buffer
235 (setq process-buffer
236 (get-buffer-create (format "*trace of SMTP session to %s*" host)))
237
238 ;; clear the trace buffer of old output
239 (save-excursion
240 (set-buffer process-buffer)
241 (erase-buffer))
242
243 ;; open the connection to the server
244 (setq process (open-network-stream "SMTP" process-buffer host port))
245 (and (null process) (throw 'done nil))
246
247 ;; set the send-filter
248 (set-process-filter process 'smtpmail-process-filter)
249
250 (save-excursion
251 (set-buffer process-buffer)
252 (make-local-variable 'smtpmail-read-point)
253 (setq smtpmail-read-point (point-min))
254
255
256 (if (or (null (car (setq greeting (smtpmail-read-response process))))
257 (not (integerp (car greeting)))
258 (>= (car greeting) 400))
259 (throw 'done nil)
260 )
261
262 ;; HELO
263 (smtpmail-send-command process (format "HELO %s" (smtpmail-fqdn)))
264
265 (if (or (null (car (setq response-code (smtpmail-read-response process))))
266 (not (integerp (car response-code)))
267 (>= (car response-code) 400))
268 (throw 'done nil)
269 )
270
271 ;; MAIL FROM: <sender>
272 ; (smtpmail-send-command process (format "MAIL FROM:%s@%s" (user-login-name) (smtpmail-fqdn)))
273 (smtpmail-send-command process (format "MAIL FROM: <%s>" user-mail-address))
274
275 (if (or (null (car (setq response-code (smtpmail-read-response process))))
276 (not (integerp (car response-code)))
277 (>= (car response-code) 400))
278 (throw 'done nil)
279 )
280
281 ;; RCPT TO: <recipient>
282 (let ((n 0))
283 (while (not (null (nth n recipient)))
284 (smtpmail-send-command process (format "RCPT TO: <%s>" (nth n recipient)))
285 (setq n (1+ n))
286
287 (if (or (null (car (setq response-code (smtpmail-read-response process))))
288 (not (integerp (car response-code)))
289 (>= (car response-code) 400))
290 (throw 'done nil)
291 )
292 ))
293
294 ;; DATA
295 (smtpmail-send-command process "DATA")
296
297 (if (or (null (car (setq response-code (smtpmail-read-response process))))
298 (not (integerp (car response-code)))
299 (>= (car response-code) 400))
300 (throw 'done nil)
301 )
302
303 ;; Mail contents
304 (smtpmail-send-data process smtpmail-text-buffer)
305
306 ;;DATA end "."
307 (smtpmail-send-command process ".")
308
309 (if (or (null (car (setq response-code (smtpmail-read-response process))))
310 (not (integerp (car response-code)))
311 (>= (car response-code) 400))
312 (throw 'done nil)
313 )
314
315 ;;QUIT
316 ; (smtpmail-send-command process "QUIT")
317 ; (and (null (car (smtpmail-read-response process)))
318 ; (throw 'done nil))
319 t ))
320 (if process
321 (save-excursion
322 (set-buffer (process-buffer process))
323 (smtpmail-send-command process "QUIT")
324 (smtpmail-read-response process)
325
326 ; (if (or (null (car (setq response-code (smtpmail-read-response process))))
327 ; (not (integerp (car response-code)))
328 ; (>= (car response-code) 400))
329 ; (throw 'done nil)
330 ; )
331 (delete-process process))))))
332
333
334 (defun smtpmail-process-filter (process output)
335 (save-excursion
336 (set-buffer (process-buffer process))
337 (goto-char (point-max))
338 (insert output)))
339
340 (defun smtpmail-read-response (process)
341 (let ((case-fold-search nil)
342 (response-string nil)
343 (response-continue t)
344 (return-value '(nil ""))
345 match-end)
346
347 ; (setq response-string nil)
348 ; (setq response-continue t)
349 ; (setq return-value '(nil ""))
350
351 (while response-continue
352 (goto-char smtpmail-read-point)
353 (while (not (search-forward "\r\n" nil t))
354 (accept-process-output process)
355 (goto-char smtpmail-read-point))
356
357 (setq match-end (point))
358 (if (null response-string)
359 (setq response-string
360 (buffer-substring smtpmail-read-point (- match-end 2))))
361
362 (goto-char smtpmail-read-point)
363 (if (looking-at "[0-9]+ ")
364 (progn (setq response-continue nil)
365 ; (setq return-value response-string)
366
367 (if smtpmail-debug-info
368 (message response-string))
369
370 (setq smtpmail-read-point match-end)
371 (setq return-value
372 (cons (string-to-int
373 (buffer-substring (match-beginning 0) (match-end 0)))
374 response-string)))
375
376 (if (looking-at "[0-9]+-")
377 (progn (setq smtpmail-read-point match-end)
378 (setq response-continue t))
379 (progn
380 (setq smtpmail-read-point match-end)
381 (setq response-continue nil)
382 (setq return-value
383 (cons nil response-string))
384 )
385 )))
386 (setq smtpmail-read-point match-end)
387 return-value))
388
389
390 (defun smtpmail-send-command (process command)
391 (goto-char (point-max))
392 (if (= (aref command 0) ?P)
393 (insert "PASS <omitted>\r\n")
394 (insert command "\r\n"))
395 (setq smtpmail-read-point (point))
396 (process-send-string process command)
397 (process-send-string process "\r\n"))
398
399 (defun smtpmail-send-data-1 (process data)
400 (goto-char (point-max))
401
402 (if (not (null smtpmail-code-conv-from))
403 (setq data (code-convert-string data smtpmail-code-conv-from *internal*)))
404
405 (if smtpmail-debug-info
406 (insert data "\r\n"))
407
408 (setq smtpmail-read-point (point))
409 ;; Escape "." at start of a line
410 (if (eq (string-to-char data) ?.)
411 (process-send-string process "."))
412 (process-send-string process data)
413 (process-send-string process "\r\n")
414 )
415
416 (defun smtpmail-send-data (process buffer)
417 (let
418 ((data-continue t)
419 (sending-data nil)
420 this-line
421 this-line-end)
422
423 (save-excursion
424 (set-buffer buffer)
425 (goto-char (point-min)))
426
427 (while data-continue
428 (save-excursion
429 (set-buffer buffer)
430 (beginning-of-line)
431 (setq this-line (point))
432 (end-of-line)
433 (setq this-line-end (point))
434 (setq sending-data nil)
435 (setq sending-data (buffer-substring this-line this-line-end))
436 (if (/= (forward-line 1) 0)
437 (setq data-continue nil)))
438
439 (smtpmail-send-data-1 process sending-data)
440 )
441 )
442 )
443
444
445 (defun smtpmail-deduce-address-list (smtpmail-text-buffer header-start header-end)
446 "Get address list suitable for smtp RCPT TO: <address>."
447 (require 'mail-utils) ;; pick up mail-strip-quoted-names
448 (let
449 ((case-fold-search t)
450 (simple-address-list "")
451 this-line
452 this-line-end
453 addr-regexp)
454
455 (unwind-protect
456 (save-excursion
457 ;;
458 (set-buffer smtpmail-address-buffer) (erase-buffer)
459 (insert-buffer-substring smtpmail-text-buffer header-start header-end)
460 (goto-char (point-min))
461 ;; RESENT-* fields should stop processing of regular fields.
462 (save-excursion
463 (if (re-search-forward "^RESENT-TO:" header-end t)
464 (setq addr-regexp "^\\(RESENT-TO:\\|RESENT-CC:\\|RESENT-BCC:\\)")
465 (setq addr-regexp "^\\(TO:\\|CC:\\|BCC:\\)")))
466
467 (while (re-search-forward addr-regexp header-end t)
468 (replace-match "")
469 (setq this-line (match-beginning 0))
470 (forward-line 1)
471 ;; get any continuation lines
472 (while (and (looking-at "^[ \t]+") (< (point) header-end))
473 (forward-line 1))
474 (setq this-line-end (point-marker))
475 (setq simple-address-list
476 (concat simple-address-list " "
477 (mail-strip-quoted-names (buffer-substring this-line this-line-end))))
478 )
479 (erase-buffer)
480 (insert-string " ")
481 (insert-string simple-address-list)
482 (insert-string "\n")
483 (subst-char-in-region (point-min) (point-max) 10 ? t);; newline --> blank
484 (subst-char-in-region (point-min) (point-max) ?, ? t);; comma --> blank
485 (subst-char-in-region (point-min) (point-max) 9 ? t);; tab --> blank
486
487 (goto-char (point-min))
488 ;; tidyness in case hook is not robust when it looks at this
489 (while (re-search-forward "[ \t]+" header-end t) (replace-match " "))
490
491 (goto-char (point-min))
492 (let (recipient-address-list)
493 (while (re-search-forward " \\([^ ]+\\) " (point-max) t)
494 (backward-char 1)
495 (setq recipient-address-list (cons (buffer-substring (match-beginning 1) (match-end 1))
496 recipient-address-list))
497 )
498 (setq smtpmail-recipient-address-list recipient-address-list))
499
500 )
501 )
502 )
503 )
504
505
506 (defun smtpmail-do-bcc (header-end)
507 "Delete BCC: and their continuation lines from the header area.
508 There may be multiple BCC: lines, and each may have arbitrarily
509 many continuation lines."
510 (let ((case-fold-search t))
511 (save-excursion (goto-char (point-min))
512 ;; iterate over all BCC: lines
513 (while (re-search-forward "^BCC:" header-end t)
514 (delete-region (match-beginning 0) (progn (forward-line 1) (point)))
515 ;; get rid of any continuation lines
516 (while (and (looking-at "^[ \t].*\n") (< (point) header-end))
517 (replace-match ""))
518 )
519 ) ;; save-excursion
520 ) ;; let
521 )
522
523
524
525 (provide 'smtpmail)
526
527 ;; smtpmail.el ends here