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Contents of /emacs/lisp/mail/smtpmail.el

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Revision 1.111 - (show annotations) (download)
Tue Nov 3 02:04:35 2009 UTC (14 years, 5 months ago) by monnier
Branch: MAIN
CVS Tags: EMACS_PRETEST_23_1_90, HEAD
Changes since 1.110: +1 -2 lines
* url-util.el (url-insert-entities-in-string):
* url-nfs.el (url-nfs-unescape):
* url-ldap.el (url-ldap):
* url-imap.el (url-imap):
* url-cid.el (url-cid-gnus, url-cid): Use with-current-buffer.
* erc.el (erc-display-line-1, erc-process-away):
* erc-truncate.el (erc-truncate-buffer-to-size):
Use with-current-buffer.
* term/ns-win.el (ns-scroll-bar-move, ns-face-at-pos):
* play/mpuz.el (mpuz-create-buffer):
* play/landmark.el (lm-prompt-for-move, lm-print-wts, lm-print-smell)
(lm-print-y,s,noise, lm-print-w0, lm-init):
* play/gomoku.el (gomoku-prompt-for-move):
* play/fortune.el (fortune-in-buffer):
* play/dissociate.el (dissociated-press):
* play/decipher.el (decipher-adjacency-list, decipher-display-regexp)
(decipher-analyze-buffer, decipher-stats-buffer,decipher-stats-buffer):
* mail/supercite.el (sc-eref-show):
* mail/smtpmail.el (smtpmail-send-it):
* mail/rmailsum.el (rmail-summary-next-labeled-message)
(rmail-summary-previous-labeled-message, rmail-summary-wipe)
(rmail-summary-undelete-many, rmail-summary-rmail-update)
(rmail-summary-goto-msg, rmail-summary-expunge)
(rmail-summary-get-new-mail, rmail-summary-search-backward)
(rmail-summary-add-label, rmail-summary-output-menu)
(rmail-summary-output-body):
* mail/rfc822.el (rfc822-addresses):
* mail/reporter.el (reporter-dump-variable, reporter-dump-state):
* mail/mailpost.el (post-mail-send-it):
* mail/hashcash.el (hashcash-generate-payment):
* mail/feedmail.el (feedmail-run-the-queue)
(feedmail-queue-send-edit-prompt-help-first)
(feedmail-send-it-immediately, feedmail-give-it-to-buffer-eater)
(feedmail-deduce-address-list):
* eshell/esh-ext.el (eshell-remote-command):
* eshell/em-unix.el (eshell-occur-mode-mouse-goto):
* emulation/viper-util.el (viper-glob-unix-files, viper-save-setting)
(viper-wildcard-to-regexp, viper-glob-mswindows-files)
(viper-save-string-in-file, viper-valid-marker):
* emulation/viper-keym.el (viper-toggle-key):
* emulation/viper-ex.el (ex-expand-filsyms, viper-get-ex-file)
(ex-edit, ex-global, ex-mark, ex-next-related-buffer, ex-quit)
(ex-get-inline-cmd-args, ex-tag, ex-command, ex-compile):
* emulation/viper-cmd.el (viper-exec-form-in-vi)
(viper-exec-form-in-emacs, viper-brac-function):
* emulation/viper.el (viper-delocalize-var):
* emulation/vip.el (vip-mode, vip-get-ex-token, vip-ex, vip-get-ex-pat)
(vip-get-ex-command, vip-get-ex-opt-gc, vip-get-ex-buffer)
(vip-get-ex-count, vip-get-ex-file, ex-edit, ex-global, ex-mark)
(ex-map, ex-unmap, ex-quit, ex-read, ex-tag, ex-command):
* emulation/vi.el (vi-switch-mode, vi-ex-cmd):
* emulation/edt.el (edt-electric-helpify):
* emulation/cua-rect.el (cua--rectangle-aux-replace):
* emulation/cua-gmrk.el (cua--insert-at-global-mark)
(cua--delete-at-global-mark, cua--copy-rectangle-to-global-mark)
(cua-indent-to-global-mark-column):
* calendar/diary-lib.el (calendar-mark-1):
* calendar/cal-hebrew.el (calendar-hebrew-mark-date-pattern):
Use with-current-buffer.
* emulation/viper.el (viper-delocalize-var): Use dolist.

1 ;;; smtpmail.el --- simple SMTP protocol (RFC 821) for sending mail
2
3 ;; Copyright (C) 1995, 1996, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
4 ;; 2008, 2009 Free Software Foundation, Inc.
5
6 ;; Author: Tomoji Kagatani <kagatani@rbc.ncl.omron.co.jp>
7 ;; Maintainer: Simon Josefsson <simon@josefsson.org>
8 ;; w32 Maintainer: Brian D. Carlstrom <bdc@ai.mit.edu>
9 ;; ESMTP support: Simon Leinen <simon@switch.ch>
10 ;; Hacked by Mike Taylor, 11th October 1999 to add support for
11 ;; automatically appending a domain to RCPT TO: addresses.
12 ;; AUTH=LOGIN support: Stephen Cranefield <scranefield@infoscience.otago.ac.nz>
13 ;; Keywords: mail
14
15 ;; This file is part of GNU Emacs.
16
17 ;; GNU Emacs is free software: you can redistribute it and/or modify
18 ;; it under the terms of the GNU General Public License as published by
19 ;; the Free Software Foundation, either version 3 of the License, or
20 ;; (at your option) any later version.
21
22 ;; GNU Emacs is distributed in the hope that it will be useful,
23 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
24 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 ;; GNU General Public License for more details.
26
27 ;; You should have received a copy of the GNU General Public License
28 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
29
30 ;;; Commentary:
31
32 ;; Send Mail to smtp host from smtpmail temp buffer.
33
34 ;; Please add these lines in your .emacs(_emacs) or use customize.
35 ;;
36 ;;(setq send-mail-function 'smtpmail-send-it) ; if you use `mail'
37 ;;(setq message-send-mail-function 'smtpmail-send-it) ; if you use message/Gnus
38 ;;(setq smtpmail-default-smtp-server "YOUR SMTP HOST")
39 ;;(setq smtpmail-local-domain "YOUR DOMAIN NAME")
40 ;;(setq smtpmail-sendto-domain "YOUR DOMAIN NAME")
41 ;;(setq smtpmail-debug-info t) ; only to debug problems
42 ;;(setq smtpmail-auth-credentials ; or use ~/.authinfo
43 ;; '(("YOUR SMTP HOST" 25 "username" "password")))
44 ;;(setq smtpmail-starttls-credentials
45 ;; '(("YOUR SMTP HOST" 25 "~/.my_smtp_tls.key" "~/.my_smtp_tls.cert")))
46 ;; Where the 25 equals the value of `smtpmail-smtp-service', it can be an
47 ;; integer or a string, just as long as they match (eq).
48
49 ;; To queue mail, set `smtpmail-queue-mail' to t and use
50 ;; `smtpmail-send-queued-mail' to send.
51
52 ;; Modified by Stephen Cranefield <scranefield@infoscience.otago.ac.nz>,
53 ;; 22/6/99, to support SMTP Authentication by the AUTH=LOGIN mechanism.
54 ;; See http://help.netscape.com/products/server/messaging/3x/info/smtpauth.html
55 ;; Rewritten by Simon Josefsson to use same credential variable as AUTH
56 ;; support below.
57
58 ;; Modified by Simon Josefsson <jas@pdc.kth.se>, 22/2/99, to support SMTP
59 ;; Authentication by the AUTH mechanism.
60 ;; See http://www.ietf.org/rfc/rfc2554.txt
61
62 ;; Modified by Simon Josefsson <simon@josefsson.org>, 2000-10-07, to support
63 ;; STARTTLS. Requires external program
64 ;; ftp://ftp.opaopa.org/pub/elisp/starttls-*.tar.gz.
65 ;; See http://www.ietf.org/rfc/rfc2246.txt, http://www.ietf.org/rfc/rfc2487.txt
66
67 ;;; Code:
68
69 (require 'sendmail)
70 (autoload 'starttls-any-program-available "starttls")
71 (autoload 'starttls-open-stream "starttls")
72 (autoload 'starttls-negotiate "starttls")
73 (autoload 'mail-strip-quoted-names "mail-utils")
74 (autoload 'message-make-date "message")
75 (autoload 'message-make-message-id "message")
76 (autoload 'rfc2104-hash "rfc2104")
77 (autoload 'netrc-parse "netrc")
78 (autoload 'netrc-machine "netrc")
79 (autoload 'netrc-get "netrc")
80 (autoload 'password-read "password-cache")
81 (autoload 'auth-source-user-or-password "auth-source")
82
83 ;;;
84 (defgroup smtpmail nil
85 "SMTP protocol for sending mail."
86 :group 'mail)
87
88
89 (defcustom smtpmail-default-smtp-server nil
90 "Specify default SMTP server.
91 This only has effect if you specify it before loading the smtpmail library."
92 :type '(choice (const nil) string)
93 :group 'smtpmail)
94
95 (defcustom smtpmail-smtp-server
96 (or (getenv "SMTPSERVER") smtpmail-default-smtp-server)
97 "The name of the host running SMTP server."
98 :type '(choice (const nil) string)
99 :group 'smtpmail)
100
101 (defcustom smtpmail-smtp-service 25
102 "SMTP service port number.
103 The default value would be \"smtp\" or 25."
104 :type '(choice (integer :tag "Port") (string :tag "Service"))
105 :group 'smtpmail)
106
107 (defcustom smtpmail-local-domain nil
108 "Local domain name without a host name.
109 If the function `system-name' returns the full internet address,
110 don't define this value."
111 :type '(choice (const nil) string)
112 :group 'smtpmail)
113
114 (defcustom smtpmail-sendto-domain nil
115 "Local domain name without a host name.
116 This is appended (with an @-sign) to any specified recipients which do
117 not include an @-sign, so that each RCPT TO address is fully qualified.
118 \(Some configurations of sendmail require this.)
119
120 Don't bother to set this unless you have get an error like:
121 Sending failed; SMTP protocol error
122 when sending mail, and the *trace of SMTP session to <somewhere>*
123 buffer includes an exchange like:
124 RCPT TO: <someone>
125 501 <someone>: recipient address must contain a domain."
126 :type '(choice (const nil) string)
127 :group 'smtpmail)
128
129 (defcustom smtpmail-debug-info nil
130 "Whether to print info in buffer *trace of SMTP session to <somewhere>*.
131 See also `smtpmail-debug-verb' which determines if the SMTP protocol should
132 be verbose as well."
133 :type 'boolean
134 :group 'smtpmail)
135
136 (defcustom smtpmail-debug-verb nil
137 "Whether this library sends the SMTP VERB command or not.
138 The commands enables verbose information from the SMTP server."
139 :type 'boolean
140 :group 'smtpmail)
141
142 (defcustom smtpmail-code-conv-from nil
143 "Coding system for encoding outgoing mail.
144 Used for the value of `sendmail-coding-system' when
145 `select-message-coding-system' is called. "
146 :type 'coding-system
147 :group 'smtpmail)
148
149 (defcustom smtpmail-queue-mail nil
150 "Non-nil means mail is queued; otherwise it is sent immediately.
151 If queued, it is stored in the directory `smtpmail-queue-dir'
152 and sent with `smtpmail-send-queued-mail'."
153 :type 'boolean
154 :group 'smtpmail)
155
156 (defcustom smtpmail-queue-dir "~/Mail/queued-mail/"
157 "Directory where `smtpmail.el' stores queued mail."
158 :type 'directory
159 :group 'smtpmail)
160
161 (defcustom smtpmail-auth-credentials "~/.authinfo"
162 "Specify username and password for servers, directly or via .netrc file.
163 This variable can either be a filename pointing to a file in netrc(5)
164 format, or list of four-element lists that contain, in order,
165 `servername' (a string), `port' (an integer), `user' (a string) and
166 `password' (a string, or nil to query the user when needed). If you
167 need to enter a `realm' too, add it to the user string, so that it
168 looks like `user@realm'."
169 :type '(choice file
170 (repeat (list (string :tag "Server")
171 (integer :tag "Port")
172 (string :tag "Username")
173 (choice (const :tag "Query when needed" nil)
174 (string :tag "Password")))))
175 :version "22.1"
176 :group 'smtpmail)
177
178 (defcustom smtpmail-starttls-credentials '(("" 25 "" ""))
179 "Specify STARTTLS keys and certificates for servers.
180 This is a list of four-element list with `servername' (a string),
181 `port' (an integer), `key' (a filename) and `certificate' (a
182 filename).
183 If you do not have a certificate/key pair, leave the `key' and
184 `certificate' fields as `nil'. A key/certificate pair is only
185 needed if you want to use X.509 client authenticated
186 connections."
187 :type '(repeat (list (string :tag "Server")
188 (integer :tag "Port")
189 (file :tag "Key")
190 (file :tag "Certificate")))
191 :version "21.1"
192 :group 'smtpmail)
193
194 (defcustom smtpmail-warn-about-unknown-extensions nil
195 "If set, print warnings about unknown SMTP extensions.
196 This is mainly useful for development purposes, to learn about
197 new SMTP extensions that might be useful to support."
198 :type 'boolean
199 :version "21.1"
200 :group 'smtpmail)
201
202 (defcustom smtpmail-queue-index-file "index"
203 "File name of queued mail index.
204 This is relative to `smtpmail-queue-dir'."
205 :type 'string
206 :group 'smtpmail)
207
208 ;; End of customizable variables.
209
210
211 (defvar smtpmail-address-buffer)
212 (defvar smtpmail-recipient-address-list)
213
214 (defvar smtpmail-queue-counter 0)
215
216 ;; Buffer-local variable.
217 (defvar smtpmail-read-point)
218
219 (defconst smtpmail-auth-supported '(cram-md5 plain login)
220 "List of supported SMTP AUTH mechanisms.
221 The list is in preference order.")
222
223 (defvar smtpmail-mail-address nil
224 "Value to use for envelope-from address for mail from ambient buffer.")
225
226 ;;;###autoload
227 (defun smtpmail-send-it ()
228 (let ((errbuf (if mail-interactive
229 (generate-new-buffer " smtpmail errors")
230 0))
231 (tembuf (generate-new-buffer " smtpmail temp"))
232 (case-fold-search nil)
233 delimline
234 (mailbuf (current-buffer))
235 ;; Examine this variable now, so that
236 ;; local binding in the mail buffer will take effect.
237 (smtpmail-mail-address
238 (or (and mail-specify-envelope-from (mail-envelope-from))
239 user-mail-address))
240 (smtpmail-code-conv-from
241 (if enable-multibyte-characters
242 (let ((sendmail-coding-system smtpmail-code-conv-from))
243 (select-message-coding-system)))))
244 (unwind-protect
245 (with-current-buffer tembuf
246 (erase-buffer)
247 ;; Use the same `buffer-file-coding-system' as in the mail
248 ;; buffer, otherwise any `write-region' invocations (e.g., in
249 ;; mail-do-fcc below) will annoy with asking for a suitable
250 ;; encoding.
251 (set-buffer-file-coding-system smtpmail-code-conv-from nil t)
252 (insert-buffer-substring mailbuf)
253 (goto-char (point-max))
254 ;; require one newline at the end.
255 (or (= (preceding-char) ?\n)
256 (insert ?\n))
257 ;; Change header-delimiter to be what sendmail expects.
258 (mail-sendmail-undelimit-header)
259 (setq delimline (point-marker))
260 ;; (sendmail-synch-aliases)
261 (if mail-aliases
262 (expand-mail-aliases (point-min) delimline))
263 (goto-char (point-min))
264 ;; ignore any blank lines in the header
265 (while (and (re-search-forward "\n\n\n*" delimline t)
266 (< (point) delimline))
267 (replace-match "\n"))
268 (let ((case-fold-search t))
269 ;; We used to process Resent-... headers here,
270 ;; but it was not done properly, and the job
271 ;; is done correctly in `smtpmail-deduce-address-list'.
272 ;; Don't send out a blank subject line
273 (goto-char (point-min))
274 (if (re-search-forward "^Subject:\\([ \t]*\n\\)+\\b" delimline t)
275 (replace-match "")
276 ;; This one matches a Subject just before the header delimiter.
277 (if (and (re-search-forward "^Subject:\\([ \t]*\n\\)+" delimline t)
278 (= (match-end 0) delimline))
279 (replace-match "")))
280 ;; Put the "From:" field in unless for some odd reason
281 ;; they put one in themselves.
282 (goto-char (point-min))
283 (if (not (re-search-forward "^From:" delimline t))
284 (let* ((login smtpmail-mail-address)
285 (fullname (user-full-name)))
286 (cond ((eq mail-from-style 'angles)
287 (insert "From: " fullname)
288 (let ((fullname-start (+ (point-min) 6))
289 (fullname-end (point-marker)))
290 (goto-char fullname-start)
291 ;; Look for a character that cannot appear unquoted
292 ;; according to RFC 822.
293 (if (re-search-forward "[^- !#-'*+/-9=?A-Z^-~]"
294 fullname-end 1)
295 (progn
296 ;; Quote fullname, escaping specials.
297 (goto-char fullname-start)
298 (insert "\"")
299 (while (re-search-forward "[\"\\]"
300 fullname-end 1)
301 (replace-match "\\\\\\&" t))
302 (insert "\""))))
303 (insert " <" login ">\n"))
304 ((eq mail-from-style 'parens)
305 (insert "From: " login " (")
306 (let ((fullname-start (point)))
307 (insert fullname)
308 (let ((fullname-end (point-marker)))
309 (goto-char fullname-start)
310 ;; RFC 822 says \ and nonmatching parentheses
311 ;; must be escaped in comments.
312 ;; Escape every instance of ()\ ...
313 (while (re-search-forward "[()\\]" fullname-end 1)
314 (replace-match "\\\\\\&" t))
315 ;; ... then undo escaping of matching parentheses,
316 ;; including matching nested parentheses.
317 (goto-char fullname-start)
318 (while (re-search-forward
319 "\\(\\=\\|[^\\]\\(\\\\\\\\\\)*\\)\\\\(\\(\\([^\\]\\|\\\\\\\\\\)*\\)\\\\)"
320 fullname-end 1)
321 (replace-match "\\1(\\3)" t)
322 (goto-char fullname-start))))
323 (insert ")\n"))
324 ((null mail-from-style)
325 (insert "From: " login "\n")))))
326 ;; Insert a `Message-Id:' field if there isn't one yet.
327 (goto-char (point-min))
328 (unless (re-search-forward "^Message-Id:" delimline t)
329 (insert "Message-Id: " (message-make-message-id) "\n"))
330 ;; Insert a `Date:' field if there isn't one yet.
331 (goto-char (point-min))
332 (unless (re-search-forward "^Date:" delimline t)
333 (insert "Date: " (message-make-date) "\n"))
334 ;; Possibly add a MIME header for the current coding system
335 (let (charset)
336 (goto-char (point-min))
337 (and (eq mail-send-nonascii 'mime)
338 (not (re-search-forward "^MIME-version:" delimline t))
339 (progn (skip-chars-forward "\0-\177")
340 (/= (point) (point-max)))
341 smtpmail-code-conv-from
342 (setq charset
343 (coding-system-get smtpmail-code-conv-from
344 'mime-charset))
345 (goto-char delimline)
346 (insert "MIME-version: 1.0\n"
347 "Content-type: text/plain; charset="
348 (symbol-name charset)
349 "\nContent-Transfer-Encoding: 8bit\n")))
350 ;; Insert an extra newline if we need it to work around
351 ;; Sun's bug that swallows newlines.
352 (goto-char (1+ delimline))
353 (if (eval mail-mailer-swallows-blank-line)
354 (newline))
355 ;; Find and handle any FCC fields.
356 (goto-char (point-min))
357 (if (re-search-forward "^FCC:" delimline t)
358 ;; Force `mail-do-fcc' to use the encoding of the mail
359 ;; buffer to encode outgoing messages on FCC files.
360 (let ((coding-system-for-write smtpmail-code-conv-from))
361 (mail-do-fcc delimline)))
362 (if mail-interactive
363 (with-current-buffer errbuf
364 (erase-buffer))))
365 ;;
366 (setq smtpmail-address-buffer (generate-new-buffer "*smtp-mail*"))
367 (setq smtpmail-recipient-address-list
368 (smtpmail-deduce-address-list tembuf (point-min) delimline))
369 (kill-buffer smtpmail-address-buffer)
370
371 (smtpmail-do-bcc delimline)
372 ;; Send or queue
373 (if (not smtpmail-queue-mail)
374 (if (not (null smtpmail-recipient-address-list))
375 (if (not (smtpmail-via-smtp
376 smtpmail-recipient-address-list tembuf))
377 (error "Sending failed; SMTP protocol error"))
378 (error "Sending failed; no recipients"))
379 (let* ((file-data
380 (expand-file-name
381 (format "%s_%i"
382 (format-time-string "%Y-%m-%d_%H:%M:%S")
383 (setq smtpmail-queue-counter
384 (1+ smtpmail-queue-counter)))
385 smtpmail-queue-dir))
386 (file-data (convert-standard-filename file-data))
387 (file-elisp (concat file-data ".el"))
388 (buffer-data (create-file-buffer file-data))
389 (buffer-elisp (create-file-buffer file-elisp))
390 (buffer-scratch "*queue-mail*"))
391 (unless (file-exists-p smtpmail-queue-dir)
392 (make-directory smtpmail-queue-dir t))
393 (with-current-buffer buffer-data
394 (erase-buffer)
395 (set-buffer-file-coding-system smtpmail-code-conv-from nil t)
396 (insert-buffer-substring tembuf)
397 (write-file file-data)
398 (set-buffer buffer-elisp)
399 (erase-buffer)
400 (insert (concat
401 "(setq smtpmail-recipient-address-list '"
402 (prin1-to-string smtpmail-recipient-address-list)
403 ")\n"))
404 (write-file file-elisp)
405 (set-buffer (generate-new-buffer buffer-scratch))
406 (insert (concat file-data "\n"))
407 (append-to-file (point-min)
408 (point-max)
409 (expand-file-name smtpmail-queue-index-file
410 smtpmail-queue-dir)))
411 (kill-buffer buffer-scratch)
412 (kill-buffer buffer-data)
413 (kill-buffer buffer-elisp))))
414 (kill-buffer tembuf)
415 (if (bufferp errbuf)
416 (kill-buffer errbuf)))))
417
418 ;;;###autoload
419 (defun smtpmail-send-queued-mail ()
420 "Send mail that was queued as a result of setting `smtpmail-queue-mail'."
421 (interactive)
422 (with-temp-buffer
423 ;; Get index, get first mail, send it, update index, get second
424 ;; mail, send it, etc...
425 (let ((file-msg "")
426 (qfile (expand-file-name smtpmail-queue-index-file
427 smtpmail-queue-dir)))
428 (insert-file-contents qfile)
429 (goto-char (point-min))
430 (while (not (eobp))
431 (setq file-msg (buffer-substring (point) (line-end-position)))
432 (load file-msg)
433 ;; Insert the message literally: it is already encoded as per
434 ;; the MIME headers, and code conversions might guess the
435 ;; encoding wrongly.
436 (with-temp-buffer
437 (let ((coding-system-for-read 'no-conversion))
438 (insert-file-contents file-msg))
439 (let ((smtpmail-mail-address
440 (or (and mail-specify-envelope-from (mail-envelope-from))
441 user-mail-address)))
442 (if (not (null smtpmail-recipient-address-list))
443 (if (not (smtpmail-via-smtp smtpmail-recipient-address-list
444 (current-buffer)))
445 (error "Sending failed; SMTP protocol error"))
446 (error "Sending failed; no recipients"))))
447 (delete-file file-msg)
448 (delete-file (concat file-msg ".el"))
449 (delete-region (point-at-bol) (point-at-bol 2)))
450 (write-region (point-min) (point-max) qfile))))
451
452 ;; (defun smtpmail-via-smtp (host,port,sender,destination,smtpmail-text-buffer)
453
454 (defun smtpmail-fqdn ()
455 (if smtpmail-local-domain
456 (concat (system-name) "." smtpmail-local-domain)
457 (system-name)))
458
459 (defsubst smtpmail-cred-server (cred)
460 (nth 0 cred))
461
462 (defsubst smtpmail-cred-port (cred)
463 (nth 1 cred))
464
465 (defsubst smtpmail-cred-key (cred)
466 (nth 2 cred))
467
468 (defsubst smtpmail-cred-user (cred)
469 (nth 2 cred))
470
471 (defsubst smtpmail-cred-cert (cred)
472 (nth 3 cred))
473
474 (defsubst smtpmail-cred-passwd (cred)
475 (nth 3 cred))
476
477 (defun smtpmail-find-credentials (cred server port)
478 (catch 'done
479 (let ((l cred) el)
480 (while (setq el (pop l))
481 (when (and (equal server (smtpmail-cred-server el))
482 (equal port (smtpmail-cred-port el)))
483 (throw 'done el))))))
484
485 (defun smtpmail-maybe-append-domain (recipient)
486 (if (or (not smtpmail-sendto-domain)
487 (string-match "@" recipient))
488 recipient
489 (concat recipient "@" smtpmail-sendto-domain)))
490
491 (defun smtpmail-intersection (list1 list2)
492 (let ((result nil))
493 (dolist (el2 list2)
494 (when (memq el2 list1)
495 (push el2 result)))
496 (nreverse result)))
497
498 (defvar starttls-extra-args)
499 (defvar starttls-extra-arguments)
500
501 (defun smtpmail-open-stream (process-buffer host port)
502 (let ((cred (smtpmail-find-credentials
503 smtpmail-starttls-credentials host port)))
504 (if (null (and cred (starttls-any-program-available)))
505 ;; The normal case.
506 (open-network-stream "SMTP" process-buffer host port)
507 (let* ((cred-key (smtpmail-cred-key cred))
508 (cred-cert (smtpmail-cred-cert cred))
509 (starttls-extra-args
510 (append
511 starttls-extra-args
512 (when (and (stringp cred-key) (stringp cred-cert)
513 (file-regular-p
514 (setq cred-key (expand-file-name cred-key)))
515 (file-regular-p
516 (setq cred-cert (expand-file-name cred-cert))))
517 (list "--key-file" cred-key "--cert-file" cred-cert))))
518 (starttls-extra-arguments
519 (append
520 starttls-extra-arguments
521 (when (and (stringp cred-key) (stringp cred-cert)
522 (file-regular-p
523 (setq cred-key (expand-file-name cred-key)))
524 (file-regular-p
525 (setq cred-cert (expand-file-name cred-cert))))
526 (list "--x509keyfile" cred-key "--x509certfile" cred-cert)))))
527 (starttls-open-stream "SMTP" process-buffer host port)))))
528
529 ;; `password-read' autoloads password-cache.
530 (declare-function password-cache-add "password-cache" (key password))
531
532 (defun smtpmail-try-auth-methods (process supported-extensions host port)
533 (let* ((mechs (cdr-safe (assoc 'auth supported-extensions)))
534 (mech (car (smtpmail-intersection mechs smtpmail-auth-supported)))
535 (auth-user (auth-source-user-or-password
536 "login" host (or port "smtp")))
537 (auth-pass (auth-source-user-or-password
538 "password" host (or port "smtp")))
539 (cred (if (and auth-user auth-pass) ; try user-auth-* before netrc-*
540 (list host port auth-user auth-pass)
541 ;; else, if auth-source didn't return them...
542 (if (stringp smtpmail-auth-credentials)
543 (let* ((netrc (netrc-parse smtpmail-auth-credentials))
544 (port-name (format "%s" (or port "smtp")))
545 (hostentry (netrc-machine netrc host port-name
546 port-name)))
547 (when hostentry
548 (list host port
549 (netrc-get hostentry "login")
550 (netrc-get hostentry "password"))))
551 ;; else, try `smtpmail-find-credentials' since
552 ;; `smtpmail-auth-credentials' is not a string
553 (smtpmail-find-credentials
554 smtpmail-auth-credentials host port))))
555 (prompt (when cred (format "SMTP password for %s:%s: "
556 (smtpmail-cred-server cred)
557 (smtpmail-cred-port cred))))
558 (passwd (when cred
559 (or (smtpmail-cred-passwd cred)
560 (password-read prompt prompt))))
561 ret)
562 (when (and cred mech)
563 (cond
564 ((eq mech 'cram-md5)
565 (smtpmail-send-command process (upcase (format "AUTH %s" mech)))
566 (if (or (null (car (setq ret (smtpmail-read-response process))))
567 (not (integerp (car ret)))
568 (>= (car ret) 400))
569 (throw 'done nil))
570 (when (eq (car ret) 334)
571 (let* ((challenge (substring (cadr ret) 4))
572 (decoded (base64-decode-string challenge))
573 (hash (rfc2104-hash 'md5 64 16 passwd decoded))
574 (response (concat (smtpmail-cred-user cred) " " hash))
575 ;; Osamu Yamane <yamane@green.ocn.ne.jp>:
576 ;; SMTP auth fails because the SMTP server identifies
577 ;; only the first part of the string (delimited by
578 ;; new line characters) as a response from the
579 ;; client, and the rest as distinct commands.
580
581 ;; In my case, the response string is 80 characters
582 ;; long. Without the no-line-break option for
583 ;; `base64-encode-string', only the first 76 characters
584 ;; are taken as a response to the server, and the
585 ;; authentication fails.
586 (encoded (base64-encode-string response t)))
587 (smtpmail-send-command process (format "%s" encoded))
588 (if (or (null (car (setq ret (smtpmail-read-response process))))
589 (not (integerp (car ret)))
590 (>= (car ret) 400))
591 (throw 'done nil)))))
592 ((eq mech 'login)
593 (smtpmail-send-command process "AUTH LOGIN")
594 (if (or (null (car (setq ret (smtpmail-read-response process))))
595 (not (integerp (car ret)))
596 (>= (car ret) 400))
597 (throw 'done nil))
598 (smtpmail-send-command
599 process (base64-encode-string (smtpmail-cred-user cred) t))
600 (if (or (null (car (setq ret (smtpmail-read-response process))))
601 (not (integerp (car ret)))
602 (>= (car ret) 400))
603 (throw 'done nil))
604 (smtpmail-send-command process (base64-encode-string passwd t))
605 (if (or (null (car (setq ret (smtpmail-read-response process))))
606 (not (integerp (car ret)))
607 (>= (car ret) 400))
608 (throw 'done nil)))
609 ((eq mech 'plain)
610 ;; We used to send an empty initial request, and wait for an
611 ;; empty response, and then send the password, but this
612 ;; violate a SHOULD in RFC 2222 paragraph 5.1. Note that this
613 ;; is not sent if the server did not advertise AUTH PLAIN in
614 ;; the EHLO response. See RFC 2554 for more info.
615 (smtpmail-send-command process
616 (concat "AUTH PLAIN "
617 (base64-encode-string
618 (concat "\0"
619 (smtpmail-cred-user cred)
620 "\0"
621 passwd) t)))
622 (if (or (null (car (setq ret (smtpmail-read-response process))))
623 (not (integerp (car ret)))
624 (not (equal (car ret) 235)))
625 (throw 'done nil)))
626
627 (t
628 (error "Mechanism %s not implemented" mech)))
629 ;; Remember the password.
630 (when (null (smtpmail-cred-passwd cred))
631 (password-cache-add prompt passwd)))))
632
633 (defun smtpmail-via-smtp (recipient smtpmail-text-buffer)
634 (let ((process nil)
635 (host (or smtpmail-smtp-server
636 (error "`smtpmail-smtp-server' not defined")))
637 (port smtpmail-smtp-service)
638 ;; `smtpmail-mail-address' should be set to the appropriate
639 ;; buffer-local value by the caller, but in case not:
640 (envelope-from (or smtpmail-mail-address
641 (and mail-specify-envelope-from
642 (mail-envelope-from))
643 user-mail-address))
644 response-code
645 greeting
646 process-buffer
647 (supported-extensions '()))
648 (unwind-protect
649 (catch 'done
650 ;; get or create the trace buffer
651 (setq process-buffer
652 (get-buffer-create (format "*trace of SMTP session to %s*" host)))
653
654 ;; clear the trace buffer of old output
655 (with-current-buffer process-buffer
656 (setq buffer-undo-list t)
657 (erase-buffer))
658
659 ;; open the connection to the server
660 (setq process (smtpmail-open-stream process-buffer host port))
661 (and (null process) (throw 'done nil))
662
663 ;; set the send-filter
664 (set-process-filter process 'smtpmail-process-filter)
665
666 (with-current-buffer process-buffer
667 (set-buffer-process-coding-system 'raw-text-unix 'raw-text-unix)
668 (make-local-variable 'smtpmail-read-point)
669 (setq smtpmail-read-point (point-min))
670
671
672 (if (or (null (car (setq greeting (smtpmail-read-response process))))
673 (not (integerp (car greeting)))
674 (>= (car greeting) 400))
675 (throw 'done nil))
676
677 (let ((do-ehlo t)
678 (do-starttls t))
679 (while do-ehlo
680 ;; EHLO
681 (smtpmail-send-command process (format "EHLO %s" (smtpmail-fqdn)))
682
683 (if (or (null (car (setq response-code
684 (smtpmail-read-response process))))
685 (not (integerp (car response-code)))
686 (>= (car response-code) 400))
687 (progn
688 ;; HELO
689 (smtpmail-send-command
690 process (format "HELO %s" (smtpmail-fqdn)))
691
692 (if (or (null (car (setq response-code
693 (smtpmail-read-response process))))
694 (not (integerp (car response-code)))
695 (>= (car response-code) 400))
696 (throw 'done nil)))
697 (dolist (line (cdr (cdr response-code)))
698 (let ((name
699 (with-case-table ascii-case-table
700 (mapcar (lambda (s) (intern (downcase s)))
701 (split-string (substring line 4) "[ ]")))))
702 (and (eq (length name) 1)
703 (setq name (car name)))
704 (and name
705 (cond ((memq (if (consp name) (car name) name)
706 '(verb xvrb 8bitmime onex xone
707 expn size dsn etrn
708 enhancedstatuscodes
709 help xusr
710 auth=login auth starttls))
711 (setq supported-extensions
712 (cons name supported-extensions)))
713 (smtpmail-warn-about-unknown-extensions
714 (message "Unknown extension %s" name)))))))
715
716 (if (and do-starttls
717 (smtpmail-find-credentials smtpmail-starttls-credentials host port)
718 (member 'starttls supported-extensions)
719 (numberp (process-id process)))
720 (progn
721 (smtpmail-send-command process (format "STARTTLS"))
722 (if (or (null (car (setq response-code (smtpmail-read-response process))))
723 (not (integerp (car response-code)))
724 (>= (car response-code) 400))
725 (throw 'done nil))
726 (starttls-negotiate process)
727 (setq do-starttls nil))
728 (setq do-ehlo nil))))
729
730 (smtpmail-try-auth-methods process supported-extensions host port)
731
732 (if (or (member 'onex supported-extensions)
733 (member 'xone supported-extensions))
734 (progn
735 (smtpmail-send-command process (format "ONEX"))
736 (if (or (null (car (setq response-code (smtpmail-read-response process))))
737 (not (integerp (car response-code)))
738 (>= (car response-code) 400))
739 (throw 'done nil))))
740
741 (if (and smtpmail-debug-verb
742 (or (member 'verb supported-extensions)
743 (member 'xvrb supported-extensions)))
744 (progn
745 (smtpmail-send-command process (format "VERB"))
746 (if (or (null (car (setq response-code (smtpmail-read-response process))))
747 (not (integerp (car response-code)))
748 (>= (car response-code) 400))
749 (throw 'done nil))))
750
751 (if (member 'xusr supported-extensions)
752 (progn
753 (smtpmail-send-command process (format "XUSR"))
754 (if (or (null (car (setq response-code (smtpmail-read-response process))))
755 (not (integerp (car response-code)))
756 (>= (car response-code) 400))
757 (throw 'done nil))))
758
759 ;; MAIL FROM:<sender>
760 (let ((size-part
761 (if (or (member 'size supported-extensions)
762 (assoc 'size supported-extensions))
763 (format " SIZE=%d"
764 (with-current-buffer smtpmail-text-buffer
765 ;; size estimate:
766 (+ (- (point-max) (point-min))
767 ;; Add one byte for each change-of-line
768 ;; because of CR-LF representation:
769 (count-lines (point-min) (point-max)))))
770 ""))
771 (body-part
772 (if (member '8bitmime supported-extensions)
773 ;; FIXME:
774 ;; Code should be added here that transforms
775 ;; the contents of the message buffer into
776 ;; something the receiving SMTP can handle.
777 ;; For a receiver that supports 8BITMIME, this
778 ;; may mean converting BINARY to BASE64, or
779 ;; adding Content-Transfer-Encoding and the
780 ;; other MIME headers. The code should also
781 ;; return an indication of what encoding the
782 ;; message buffer is now, i.e. ASCII or
783 ;; 8BITMIME.
784 (if nil
785 " BODY=8BITMIME"
786 "")
787 "")))
788 ;; (smtpmail-send-command process (format "MAIL FROM:%s@%s" (user-login-name) (smtpmail-fqdn)))
789 (smtpmail-send-command process (format "MAIL FROM:<%s>%s%s"
790 envelope-from
791 size-part
792 body-part))
793
794 (if (or (null (car (setq response-code (smtpmail-read-response process))))
795 (not (integerp (car response-code)))
796 (>= (car response-code) 400))
797 (throw 'done nil)))
798
799 ;; RCPT TO:<recipient>
800 (let ((n 0))
801 (while (not (null (nth n recipient)))
802 (smtpmail-send-command process (format "RCPT TO:<%s>" (smtpmail-maybe-append-domain (nth n recipient))))
803 (setq n (1+ n))
804
805 (setq response-code (smtpmail-read-response process))
806 (if (or (null (car response-code))
807 (not (integerp (car response-code)))
808 (>= (car response-code) 400))
809 (throw 'done nil))))
810
811 ;; DATA
812 (smtpmail-send-command process "DATA")
813
814 (if (or (null (car (setq response-code (smtpmail-read-response process))))
815 (not (integerp (car response-code)))
816 (>= (car response-code) 400))
817 (throw 'done nil))
818
819 ;; Mail contents
820 (smtpmail-send-data process smtpmail-text-buffer)
821
822 ;; DATA end "."
823 (smtpmail-send-command process ".")
824
825 (if (or (null (car (setq response-code (smtpmail-read-response process))))
826 (not (integerp (car response-code)))
827 (>= (car response-code) 400))
828 (throw 'done nil))
829
830 ;; QUIT
831 ;; (smtpmail-send-command process "QUIT")
832 ;; (and (null (car (smtpmail-read-response process)))
833 ;; (throw 'done nil))
834 t))
835 (if process
836 (with-current-buffer (process-buffer process)
837 (smtpmail-send-command process "QUIT")
838 (smtpmail-read-response process)
839
840 ;; (if (or (null (car (setq response-code (smtpmail-read-response process))))
841 ;; (not (integerp (car response-code)))
842 ;; (>= (car response-code) 400))
843 ;; (throw 'done nil))
844 (delete-process process)
845 (unless smtpmail-debug-info
846 (kill-buffer process-buffer)))))))
847
848
849 (defun smtpmail-process-filter (process output)
850 (with-current-buffer (process-buffer process)
851 (goto-char (point-max))
852 (insert output)))
853
854 (defun smtpmail-read-response (process)
855 (let ((case-fold-search nil)
856 (response-strings nil)
857 (response-continue t)
858 (return-value '(nil ()))
859 match-end)
860 (catch 'done
861 (while response-continue
862 (goto-char smtpmail-read-point)
863 (while (not (search-forward "\r\n" nil t))
864 (unless (memq (process-status process) '(open run))
865 (throw 'done nil))
866 (accept-process-output process)
867 (goto-char smtpmail-read-point))
868
869 (setq match-end (point))
870 (setq response-strings
871 (cons (buffer-substring smtpmail-read-point (- match-end 2))
872 response-strings))
873
874 (goto-char smtpmail-read-point)
875 (if (looking-at "[0-9]+ ")
876 (let ((begin (match-beginning 0))
877 (end (match-end 0)))
878 (if smtpmail-debug-info
879 (message "%s" (car response-strings)))
880
881 (setq smtpmail-read-point match-end)
882
883 ;; ignore lines that start with "0"
884 (if (looking-at "0[0-9]+ ")
885 nil
886 (setq response-continue nil)
887 (setq return-value
888 (cons (string-to-number
889 (buffer-substring begin end))
890 (nreverse response-strings)))))
891
892 (if (looking-at "[0-9]+-")
893 (progn (if smtpmail-debug-info
894 (message "%s" (car response-strings)))
895 (setq smtpmail-read-point match-end)
896 (setq response-continue t))
897 (progn
898 (setq smtpmail-read-point match-end)
899 (setq response-continue nil)
900 (setq return-value
901 (cons nil (nreverse response-strings)))))))
902 (setq smtpmail-read-point match-end))
903 return-value))
904
905
906 (defun smtpmail-send-command (process command)
907 (goto-char (point-max))
908 (if (= (aref command 0) ?P)
909 (insert "PASS <omitted>\r\n")
910 (insert command "\r\n"))
911 (setq smtpmail-read-point (point))
912 (process-send-string process command)
913 (process-send-string process "\r\n"))
914
915 (defun smtpmail-send-data-1 (process data)
916 (goto-char (point-max))
917
918 (if (and (multibyte-string-p data)
919 smtpmail-code-conv-from)
920 (setq data (string-as-multibyte
921 (encode-coding-string data smtpmail-code-conv-from))))
922
923 (if smtpmail-debug-info
924 (insert data "\r\n"))
925
926 (setq smtpmail-read-point (point))
927 ;; Escape "." at start of a line
928 (if (eq (string-to-char data) ?.)
929 (process-send-string process "."))
930 (process-send-string process data)
931 (process-send-string process "\r\n"))
932
933 (defun smtpmail-send-data (process buffer)
934 (let ((data-continue t) sending-data)
935 (with-current-buffer buffer
936 (goto-char (point-min)))
937 (while data-continue
938 (with-current-buffer buffer
939 (setq sending-data (buffer-substring (point-at-bol) (point-at-eol)))
940 (end-of-line 2)
941 (setq data-continue (not (eobp))))
942 (smtpmail-send-data-1 process sending-data))))
943
944 (defun smtpmail-deduce-address-list (smtpmail-text-buffer header-start header-end)
945 "Get address list suitable for smtp RCPT TO: <address>."
946 (unwind-protect
947 (with-current-buffer smtpmail-address-buffer
948 (erase-buffer)
949 (let ((case-fold-search t)
950 (simple-address-list "")
951 this-line
952 this-line-end
953 addr-regexp)
954 (insert-buffer-substring smtpmail-text-buffer header-start header-end)
955 (goto-char (point-min))
956 ;; RESENT-* fields should stop processing of regular fields.
957 (save-excursion
958 (setq addr-regexp
959 (if (re-search-forward "^Resent-\\(to\\|cc\\|bcc\\):"
960 header-end t)
961 "^Resent-\\(to\\|cc\\|bcc\\):"
962 "^\\(To:\\|Cc:\\|Bcc:\\)")))
963
964 (while (re-search-forward addr-regexp header-end t)
965 (replace-match "")
966 (setq this-line (match-beginning 0))
967 (forward-line 1)
968 ;; get any continuation lines
969 (while (and (looking-at "^[ \t]+") (< (point) header-end))
970 (forward-line 1))
971 (setq this-line-end (point-marker))
972 (setq simple-address-list
973 (concat simple-address-list " "
974 (mail-strip-quoted-names (buffer-substring this-line this-line-end)))))
975 (erase-buffer)
976 (insert " " simple-address-list "\n")
977 (subst-char-in-region (point-min) (point-max) 10 ? t) ; newline --> blank
978 (subst-char-in-region (point-min) (point-max) ?, ? t) ; comma --> blank
979 (subst-char-in-region (point-min) (point-max) 9 ? t) ; tab --> blank
980
981 (goto-char (point-min))
982 ;; tidyness in case hook is not robust when it looks at this
983 (while (re-search-forward "[ \t]+" header-end t) (replace-match " "))
984
985 (goto-char (point-min))
986 (let (recipient-address-list)
987 (while (re-search-forward " \\([^ ]+\\) " (point-max) t)
988 (backward-char 1)
989 (setq recipient-address-list (cons (buffer-substring (match-beginning 1) (match-end 1))
990 recipient-address-list)))
991 (setq smtpmail-recipient-address-list recipient-address-list))))))
992
993 (defun smtpmail-do-bcc (header-end)
994 "Delete [Resent-]BCC: and their continuation lines from the header area.
995 There may be multiple BCC: lines, and each may have arbitrarily
996 many continuation lines."
997 (let ((case-fold-search t))
998 (save-excursion
999 (goto-char (point-min))
1000 ;; iterate over all BCC: lines
1001 (while (re-search-forward "^\\(RESENT-\\)?BCC:" header-end t)
1002 (delete-region (match-beginning 0)
1003 (progn (forward-line 1) (point)))
1004 ;; get rid of any continuation lines
1005 (while (and (looking-at "^[ \t].*\n") (< (point) header-end))
1006 (replace-match ""))))))
1007
1008 (provide 'smtpmail)
1009
1010 ;; arch-tag: a76992df-6d71-43b7-9e72-4bacc6c05466
1011 ;;; smtpmail.el ends here

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