1 ;;; wl-mime.el --- SEMI implementations of MIME processing on Wanderlust.
3 ;; Copyright (C) 1998,1999,2000 Yuuichi Teranishi <teranisi@gohome.org>
5 ;; Author: Yuuichi Teranishi <teranisi@gohome.org>
6 ;; Keywords: mail, net news
8 ;; This file is part of Wanderlust (Yet Another Message Interface on Emacsen).
10 ;; This program is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; This program is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
38 (defalias-maybe 'pgg-decrypt-region 'ignore)
39 (defalias-maybe 'pgg-display-output-buffer 'ignore)
40 (defalias-maybe 'pgg-verify-region 'ignore))
44 (defalias 'wl-draft-editor-mode 'mime-edit-mode)
46 (defalias 'wl-draft-decode-message-in-buffer
47 'mime-edit-decode-message-in-buffer)
49 (defun wl-draft-yank-current-message-entity ()
50 "Yank currently displayed message entity.
51 By setting following-method as yank-content.
53 If region is active, yank region contents instead. \(this feature is available
54 if and only if `transient-mark-mode' \(GNU Emacs\) or `zmacs-regions' \(XEmacs\)
56 (let ((wl-draft-buffer (current-buffer))
57 (mime-view-following-method-alist
58 (list (cons 'wl-original-message-mode
59 (function wl-draft-yank-to-draft-buffer))))
60 (mime-preview-following-method-alist
61 (list (cons 'wl-original-message-mode
62 (function wl-draft-yank-to-draft-buffer)))))
63 (if (get-buffer (wl-current-message-buffer))
65 (set-buffer (wl-current-message-buffer))
68 (if (wl-region-exists-p)
69 (wl-mime-preview-follow-current-region)
70 (mime-preview-follow-current-entity)))))))
72 ;; modified mime-preview-follow-current-entity from mime-view.el
73 (defun wl-mime-preview-follow-current-region ()
74 "Write follow message to current region.
75 It calls following-method selected from variable
76 `mime-preview-following-method-alist'."
78 (let ((r-beg (region-beginning))
80 (entity (get-text-property (point-min)
82 (let* ((mode (mime-preview-original-major-mode 'recursive))
84 (format "%s-active-region" (buffer-name)))
86 (the-buf (current-buffer))
89 (set-buffer (setq new-buf (get-buffer-create new-name)))
92 (insert-buffer-substring the-buf r-beg r-end)
93 (goto-char (point-min))
95 (if (and (eq (mime-entity-media-type entity) 'message)
96 (eq (mime-entity-media-subtype entity) 'rfc822))
97 (car (mime-entity-children entity))
99 (while (and current-entity
100 (if (and (eq (mime-entity-media-type
101 current-entity) 'message)
102 (eq (mime-entity-media-subtype
103 current-entity) 'rfc822))
105 (mime-insert-header current-entity fields)
107 (setq fields (std11-collect-field-names)
108 current-entity (mime-entity-parent current-entity))
110 (let ((rest mime-view-following-required-fields-list)
113 (setq field-name (car rest))
114 (or (std11-field-body field-name)
118 (let ((entity (when mime-mother-buffer
119 (set-buffer mime-mother-buffer)
120 (get-text-property (point)
121 'mime-view-entity))))
123 (null (setq ret (mime-entity-fetch-field
124 entity field-name))))
125 (setq entity (mime-entity-parent entity)))))
127 (insert (concat field-name ": " ret "\n"))
129 (setq rest (cdr rest))
132 (let ((f (cdr (assq mode mime-preview-following-method-alist))))
136 "Sorry, following method for %s is not implemented yet."
141 (defalias 'wl-draft-enclose-digest-region 'mime-edit-enclose-digest-region)
143 (defun wl-draft-preview-message ()
144 "Preview editing message."
146 (let* (recipients-message
147 (current-point (point))
148 (config-exec-flag wl-draft-config-exec-flag)
149 (parent-folder wl-draft-parent-folder)
150 (mime-display-header-hook 'wl-highlight-headers)
151 (mime-header-encode-method-alist
153 '((wl-draft-eword-encode-address-list
154 . (To Cc Bcc Resent-To Resent-Cc Resent-Bcc From)))
155 (if (boundp 'mime-header-encode-method-alist)
156 (symbol-value 'mime-header-encode-method-alist))))
157 mime-view-ignored-field-list ; all header.
158 (mime-edit-translate-buffer-hook
163 (let ((wl-draft-config-exec-flag config-exec-flag)
164 (wl-draft-parent-folder parent-folder))
165 (goto-char current-point)
166 (run-hooks 'wl-draft-send-hook)
167 (setq recipients-message
169 (concat "Recipients: "
172 (wl-draft-deduce-address-list
176 (goto-char (point-min))
180 (regexp-quote mail-header-separator)
186 (kill-buffer (current-buffer))
187 (signal (car err) (cdr err)))))))))
188 mime-edit-translate-buffer-hook)))
189 (mime-edit-preview-message)
190 (let ((buffer-read-only nil))
191 (when wl-highlight-body-too
193 (run-hooks 'wl-draft-preview-message-hook))
194 (message "%s" recipients-message)))
196 (defalias 'wl-draft-caesar-region 'mule-caesar-region)
198 (defalias 'wl-draft-insert-message 'mime-edit-insert-message)
200 (defalias 'wl-draft-insert-mail 'mime-edit-insert-mail)
204 (defun wl-message-decode-mode (outbuf inbuf)
205 (let ((mime-view-content-header-filter-hook 'wl-highlight-headers)
206 (mime-display-header-hook 'wl-highlight-headers))
207 (mime-view-mode nil nil nil inbuf outbuf)))
209 (defun wl-message-decode-with-all-header (outbuf inbuf)
210 (let ((mime-view-ignored-field-regexp "^:$")
211 (mime-view-content-header-filter-hook 'wl-highlight-headers)
212 (mime-display-header-hook 'wl-highlight-headers)
213 mime-view-ignored-field-list)
214 (mime-view-mode nil nil nil inbuf outbuf)))
216 (defun wl-message-delete-mime-out-buf ()
217 (let (mime-out-buf mime-out-win)
218 (if (setq mime-out-buf (get-buffer mime-echo-buffer-name))
219 (if (setq mime-out-win (get-buffer-window mime-out-buf))
220 (delete-window mime-out-win)))))
222 (defun wl-message-request-partial (folder number)
224 (elmo-message-fetch (wl-folder-get-elmo-folder folder)
226 (elmo-make-fetch-strategy 'entire)
230 (mime-parse-buffer nil)))
232 (defalias 'wl-message-read 'mime-preview-scroll-up-entity)
233 (defalias 'wl-message-next-content 'mime-preview-move-to-next)
234 (defalias 'wl-message-prev-content 'mime-preview-move-to-previous)
235 (defalias 'wl-message-play-content 'mime-preview-play-current-entity)
236 (defalias 'wl-message-extract-content 'mime-preview-extract-current-entity)
237 (defalias 'wl-message-quit 'mime-preview-quit)
238 (defalias 'wl-message-button-dispatcher-internal
239 'mime-button-dispatcher)
241 (defsubst wl-mime-node-id-to-string (node-id)
243 (mapconcat (function (lambda (num) (format "%s" (1+ num))))
248 (defun wl-message-delete-current-part ()
249 "Delete a part under the cursor from the multipart message."
253 (let* ((entity (get-text-property (point) 'mime-view-entity))
254 (node-id (mime-entity-node-id entity))
255 (header-start (mime-buffer-entity-header-start-internal entity))
256 (body-end (mime-buffer-entity-body-end-internal entity))
257 (folder (wl-folder-get-elmo-folder wl-message-buffer-cur-folder))
258 (number wl-message-buffer-cur-number)
259 (msgid (elmo-message-field folder number 'message-id))
260 (orig-buf wl-message-buffer-original-buffer))
261 (if (eq (luna-class-name entity) 'mime-elmo-imap-entity)
262 (error "Please fetch the entire message (by typing 'C-u .') and try again"))
263 (with-current-buffer orig-buf
264 (unless (string-equal
266 (elmo-message-fetch folder number
267 (elmo-make-fetch-strategy 'entire)))
268 (error "Buffer content differs from actual message")))
269 (when (and (elmo-folder-writable-p folder)
270 (buffer-live-p orig-buf)
273 (format "Do you really want to delete part %s? "
274 (wl-mime-node-id-to-string node-id))))
275 (when (with-temp-buffer
276 (insert-buffer orig-buf)
277 (delete-region header-start body-end)
278 (goto-char header-start)
279 (insert "Content-Type: text/plain; charset=US-ASCII\n\n")
280 (insert "** This part has been removed by Wanderlust **\n\n")
281 (elmo-folder-append-buffer folder))
283 (elmo-folder-move-messages
285 (wl-folder-get-elmo-folder wl-trash-folder))
286 (when (and (elmo-cache-get-path msgid)
287 (file-exists-p (elmo-cache-get-path msgid)))
288 (delete-file (elmo-cache-get-path msgid)))
291 (wl-summary-delete-messages-on-buffer (list number))
292 (wl-summary-toggle-disp-msg 'off)
293 (setq wl-message-buffer nil)
294 (wl-summary-sync nil "update"))))))
296 (defun wl-message-decrypt-pgp-nonmime ()
297 "Decrypt PGP encrypted region"
302 (if (or (re-search-forward "^-+END PGP MESSAGE-+$" nil t)
303 (re-search-backward "^-+END PGP MESSAGE-+$" nil t))
304 (let (beg end status)
305 (setq end (match-end 0))
306 (if (setq beg (re-search-backward "^-+BEGIN PGP MESSAGE-+$" nil t))
307 (let ((inhibit-read-only t)
308 (buffer-file-coding-system wl-cs-autoconv))
309 (setq status (pgg-decrypt-region beg end))
310 (pgg-display-output-buffer beg end status))
311 (message "Cannot find pgp encrypted region")))
312 (message "Cannot find pgp encrypted region"))))
314 (defun wl-message-verify-pgp-nonmime ()
315 "Verify PGP signed region"
320 (if (and (or (re-search-forward "^-+END PGP SIGNATURE-+$" nil t)
321 (re-search-backward "^-+END PGP SIGNATURE-+$" nil t))
322 (re-search-backward "^-+BEGIN PGP SIGNED MESSAGE-+$" nil t))
325 (situation (mime-preview-find-boundary-info))
326 (p-end (aref situation 1))
327 (entity (aref situation 2))
330 (while (< beg (point))
331 (if (re-search-backward "^-+BEGIN PGP SIGNED MESSAGE-+$" nil t)
332 (setq count (+ count 1))
335 (set-buffer-multibyte nil)
336 (insert (mime-entity-body entity))
337 (goto-char (point-max))
339 (if (re-search-backward "^-+BEGIN PGP SIGNED MESSAGE-+$" nil t)
340 (setq count (- count 1))
342 (let ((r-beg (point))
343 (r-end (re-search-forward "^-+END PGP SIGNATURE-+$" nil t)))
345 (setq status (pgg-verify-region r-beg r-end nil 'fetch))
347 (mime-show-echo-buffer)
348 (set-buffer mime-echo-buffer-name)
350 (get-buffer-window mime-echo-buffer-name)
353 (insert-buffer-substring
354 (if status pgg-output-buffer pgg-errors-buffer))
355 (decode-coding-region m-beg (point) wl-cs-autoconv))
356 (message "Cannot find pgp signed region"))))
358 ;; XXX: encrypted multipart isn't represented as multipart
359 (defun wl-mime-preview-application/pgp (parent-entity entity situation)
361 (goto-char (point-max))
363 raw-buf to-buf representation-type child-entity)
366 (narrow-to-region p p)
367 (setq to-buf (current-buffer))
369 (setq raw-buf (current-buffer))
370 (mime-insert-entity entity)
372 (goto-char (point-min))
373 (re-search-forward "^-+BEGIN PGP MESSAGE-+$" nil t))
374 (pgg-decrypt-region (point-min)(point-max))
375 (delete-region (point-min) (point-max))
376 (insert-buffer pgg-output-buffer)
377 (setq representation-type 'elmo-buffer))
378 (setq child-entity (mime-parse-message
379 (mm-expand-class-name representation-type)
382 (mime-entity-node-id-internal parent-entity)))
388 (entity-button . invisible))
391 (defun wl-mime-preview-application/pgp-encrypted (entity situation)
392 (let* ((entity-node-id (mime-entity-node-id entity))
393 (mother (mime-entity-parent entity))
394 (knum (car entity-node-id))
398 (orig-entity (nth onum (mime-entity-children mother))))
399 (wl-mime-preview-application/pgp entity orig-entity situation)))
402 (defun wl-summary-burst-subr (message-entity target number)
403 ;; returns new number.
404 (let (content-type entity)
405 (setq content-type (mime-entity-content-type message-entity))
406 (cond ((eq (cdr (assq 'type content-type)) 'multipart)
407 (dolist (entity (mime-entity-children message-entity))
408 (setq number (wl-summary-burst-subr
412 ((and (eq (cdr (assq 'type content-type)) 'message)
413 (eq (cdr (assq 'subtype content-type)) 'rfc822))
414 (message "Bursting...%s" (setq number (+ 1 number)))
416 (car (mime-entity-children message-entity)))
418 (insert (mime-entity-body message-entity))
419 (elmo-folder-append-buffer target))))
422 (defun wl-summary-burst (&optional arg)
423 "De-capsulate embedded messages in MIME format.
424 With ARG, ask destination folder."
426 (let ((raw-buf (wl-summary-get-original-buffer))
427 (view-buf wl-message-buffer)
428 children message-entity content-type target-name target)
430 (setq target wl-summary-buffer-elmo-folder)
431 (when (or arg (not (elmo-folder-writable-p target)))
432 (setq target-name (wl-summary-read-folder wl-default-folder "to extract to"))
433 (setq target (wl-folder-get-elmo-folder target-name)))
434 (wl-summary-set-message-buffer-or-redisplay)
435 (with-current-buffer view-buf
436 (setq message-entity (get-text-property (point-min) 'mime-view-entity)))
438 (message "Bursting...")
439 (with-current-buffer raw-buf
440 (wl-summary-burst-subr message-entity target 0))
441 (message "Bursting...done"))
442 (if (elmo-folder-plugged-p target)
443 (elmo-folder-check target)))
444 (when (or (not target-name)
445 (string= wl-summary-buffer-folder-name target-name))
446 (save-excursion (wl-summary-sync-update)))))
448 ;; internal variable.
449 (defvar wl-mime-save-directory nil "Last saved directory.")
450 ;;; Yet another save method.
451 (defun wl-mime-save-content (entity situation)
452 (let ((filename (read-file-name "Save to file: "
454 (or (mime-entity-safe-filename entity)
456 (or wl-mime-save-directory
457 wl-temporary-file-directory)))))
458 (while (file-directory-p filename)
459 (setq filename (read-file-name "Please set filename (not directory): "
461 (if (and (file-exists-p filename)
462 (not (yes-or-no-p (format "File %s exists. Save anyway? "
464 (message "Not saved")
465 (setq wl-mime-save-directory (file-name-directory filename))
466 (mime-write-entity-content entity filename))))
468 ;;; Yet another combine method.
469 (defun wl-mime-combine-message/partial-pieces (entity situation)
470 "Internal method for wl to combine message/partial messages automatically."
472 (let* ((folder (save-excursion
473 (set-buffer wl-message-buffer-cur-summary-buffer)
474 wl-summary-buffer-elmo-folder))
475 (mime-display-header-hook 'wl-highlight-headers)
476 (folder wl-message-buffer-cur-folder)
477 (id (or (cdr (assoc "id" situation)) ""))
478 (mother (current-buffer))
479 (summary-buf wl-message-buffer-cur-summary-buffer)
481 (root-dir (expand-file-name
482 (concat "m-prts-" (user-login-name))
483 temporary-file-directory))
485 (setq root-dir (concat root-dir "/" (replace-as-filename id)))
486 (setq full-file (concat root-dir "/FULL"))
487 (if (or (file-exists-p full-file)
488 (not (y-or-n-p "Merge partials? ")))
489 (with-current-buffer mother
490 (mime-store-message/partial-piece entity situation)
491 (setq wl-message-buffer-cur-summary-buffer summary-buf)
492 (make-variable-buffer-local 'mime-preview-over-to-next-method-alist)
493 (setq mime-preview-over-to-next-method-alist
494 (cons (cons 'mime-show-message-mode 'wl-message-exit)
495 mime-preview-over-to-next-method-alist))
496 (make-variable-buffer-local 'mime-preview-over-to-previous-method-alist)
497 (setq mime-preview-over-to-previous-method-alist
498 (cons (cons 'mime-show-message-mode 'wl-message-exit)
499 mime-preview-over-to-previous-method-alist)))
502 (decode-mime-charset-string
503 (mime-entity-read-field entity 'Subject)
504 wl-summary-buffer-mime-charset)))
505 (if (string-match "[0-9\n]+" subject-id)
506 (setq subject-id (substring subject-id 0 (match-beginning 0))))
508 (elmo-folder-do-each-message-entity (entity folder)
510 (regexp-quote subject-id)
511 (elmo-message-entity-field entity 'subject))
513 ;; request message at the cursor in Subject buffer.
514 (wl-message-request-partial
516 (elmo-message-entity-number entity)))
517 (situation (mime-entity-situation message))
518 (the-id (or (cdr (assoc "id" situation)) "")))
519 (when (string= (downcase the-id)
521 (with-current-buffer mother
522 (mime-store-message/partial-piece message situation))
523 (if (file-exists-p full-file)
524 (throw 'tag nil))))))
525 (message "Not all partials found.")))))
527 (defun wl-mime-display-text/plain (entity situation)
529 (mime-display-text/plain entity situation)
530 (wl-highlight-message beg (point-max) t t)))
532 (defun wl-mime-display-header (entity situation)
533 (let ((elmo-message-ignored-field-list
534 (if wl-message-buffer-all-header-flag
536 wl-message-ignored-field-list))
537 (elmo-message-visible-field-list wl-message-visible-field-list)
538 (elmo-message-sorted-field-list wl-message-sort-field-list))
539 (elmo-mime-insert-header entity situation)
540 (wl-highlight-headers)))
542 (defun wl-mime-decrypt-application/pgp-encrypted (entity situation)
543 (let ((summary-buffer wl-message-buffer-cur-summary-buffer)
544 (original-buffer wl-message-buffer-original-buffer))
545 (mime-decrypt-application/pgp-encrypted entity situation)
546 (setq wl-message-buffer-cur-summary-buffer summary-buffer)
547 (setq wl-message-buffer-original-buffer original-buffer)))
551 (defun wl-mime-setup ()
552 (set-alist 'mime-preview-quitting-method-alist
553 'wl-original-message-mode 'wl-message-exit)
554 (set-alist 'mime-view-over-to-previous-method-alist
555 'wl-original-message-mode 'wl-message-exit)
556 (set-alist 'mime-view-over-to-next-method-alist
557 'wl-original-message-mode 'wl-message-exit)
558 (set-alist 'mime-preview-over-to-previous-method-alist
559 'wl-original-message-mode 'wl-message-exit)
560 (set-alist 'mime-preview-over-to-next-method-alist
561 'wl-original-message-mode 'wl-message-exit)
562 (add-hook 'wl-summary-redisplay-hook 'wl-message-delete-mime-out-buf)
563 (add-hook 'wl-message-exit-hook 'wl-message-delete-mime-out-buf)
565 (ctree-set-calist-strictly
566 'mime-preview-condition
567 '((type . text) (subtype . plain)
569 (body-presentation-method . wl-mime-display-text/plain)
570 (major-mode . wl-original-message-mode)))
572 (ctree-set-calist-strictly
573 'mime-preview-condition
574 '((type . application)(subtype . pgp-encrypted)
577 (body-presentation-method . wl-mime-preview-application/pgp-encrypted)
578 (major-mode . wl-original-message-mode)))
580 (ctree-set-calist-strictly
581 'mime-acting-condition
582 '((type . message) (subtype . partial)
583 (method . wl-mime-combine-message/partial-pieces)
584 (request-partial-message-method . wl-message-request-partial)
585 (major-mode . wl-original-message-mode)))
587 (ctree-set-calist-strictly
588 'mime-acting-condition
589 '((type . application) (subtype . pgp-encrypted)
590 (method . wl-mime-decrypt-application/pgp-encrypted)
591 (major-mode . wl-original-message-mode)))
593 (ctree-set-calist-strictly
594 'mime-acting-condition
596 (major-mode . wl-original-message-mode)
597 (method . wl-mime-save-content)))
598 (set-alist 'mime-preview-following-method-alist
599 'wl-original-message-mode
600 (function wl-message-follow-current-entity))
601 (set-alist 'mime-view-following-method-alist
602 'wl-original-message-mode
603 (function wl-message-follow-current-entity))
604 (set-alist 'mime-edit-message-inserter-alist
605 'wl-draft-mode (function wl-draft-insert-current-message))
606 (set-alist 'mime-edit-mail-inserter-alist
607 'wl-draft-mode (function wl-draft-insert-get-message))
608 (set-alist 'mime-edit-split-message-sender-alist
610 (cdr (assq 'mail-mode mime-edit-split-message-sender-alist)))
611 (set-alist 'mime-raw-representation-type-alist
612 'wl-original-message-mode 'binary)
613 ;; Sort and highlight header fields.
614 (or wl-message-ignored-field-list
615 (setq wl-message-ignored-field-list
616 mime-view-ignored-field-list))
617 (or wl-message-visible-field-list
618 (setq wl-message-visible-field-list
619 mime-view-visible-field-list))
620 (set-alist 'mime-header-presentation-method-alist
621 'wl-original-message-mode
622 'wl-mime-display-header)
623 ;; To avoid overriding wl-draft-mode-map.
624 (when (boundp 'mime-setup-signature-key-alist)
625 (unless (assq 'wl-draft-mode mime-setup-signature-key-alist)
626 (setq mime-setup-signature-key-alist
627 (cons '(wl-draft-mode . "\C-c\C-w")
628 mime-setup-signature-key-alist)))))
631 (product-provide (provide 'wl-mime) (require 'wl-version))
633 ;;; wl-mime.el ends here