1 ;;; mh-mime.el --- MH-E MIME support
3 ;; Copyright (C) 1993, 1995,
4 ;; 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
6 ;; Author: Bill Wohler <wohler@newt.com>
7 ;; Maintainer: Bill Wohler <wohler@newt.com>
11 ;; This file is part of GNU Emacs.
13 ;; GNU Emacs is free software; you can redistribute it and/or modify
14 ;; it under the terms of the GNU General Public License as published by
15 ;; the Free Software Foundation; either version 2, or (at your option)
18 ;; GNU Emacs is distributed in the hope that it will be useful,
19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 ;; GNU General Public License for more details.
23 ;; You should have received a copy of the GNU General Public License
24 ;; along with GNU Emacs; see the file COPYING. If not, write to the
25 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
26 ;; Boston, MA 02110-1301, USA.
30 ;; Message composition of MIME message is done with either MH-style
31 ;; directives for mhn or mhbuild (MH 6.8 or later) or MML (MIME Meta
35 ;; Paragraph code should not fill # lines if MIME enabled.
36 ;; Implement mh-auto-mh-to-mime (if non-nil, \\[mh-send-letter]
37 ;; invokes mh-mh-to-mime automatically before sending.)
38 ;; Actually, instead of mh-auto-mh-to-mime,
39 ;; should read automhnproc from profile.
40 ;; MIME option to mh-forward command to move to content-description
48 (require 'mh-gnus
) ;needed because mh-gnus.el not compiled
57 (autoload 'article-emphasize
"gnus-art")
58 (autoload 'gnus-eval-format
"gnus-spec")
59 (autoload 'mail-content-type-get
"mail-parse")
60 (autoload 'mail-decode-encoded-word-string
"mail-parse")
61 (autoload 'mail-header-parse-content-type
"mail-parse")
62 (autoload 'mail-header-strip
"mail-parse")
63 (autoload 'message-options-set-recipient
"message")
64 (autoload 'mm-decode-body
"mm-bodies")
65 (autoload 'mm-uu-dissect
"mm-uu")
66 (autoload 'mml-unsecure-message
"mml-sec")
67 (autoload 'rfc2047-decode-region
"rfc2047")
68 (autoload 'widget-convert-button
"wid-edit")
74 ;; This has to be a macro, since we do: (setf (mh-buffer-data) ...)
76 (defmacro mh-buffer-data
()
77 "Convenience macro to get the MIME data structures of the current buffer."
78 `(gethash (current-buffer) mh-globals-hash
))
80 ;; Structure to keep track of MIME handles on a per buffer basis.
81 (mh-defstruct (mh-buffer-data (:conc-name mh-mime-
)
82 (:constructor mh-make-buffer-data
))
83 (handles ()) ; List of MIME handles
84 (handles-cache (make-hash-table)) ; Cache to avoid multiple decodes of
86 (parts-count 0) ; The button number is generated from
88 (part-index-hash (make-hash-table))) ; Avoid incrementing the part number
91 (defvar mh-mm-inline-media-tests
95 (mm-valid-and-fit-image-p 'jpeg handle
)))
99 (mm-valid-and-fit-image-p 'png handle
)))
103 (mm-valid-and-fit-image-p 'gif handle
)))
107 (mm-valid-and-fit-image-p 'tiff handle
)) )
111 (mm-valid-and-fit-image-p 'xbm handle
)))
115 (mm-valid-and-fit-image-p 'xbm handle
)))
119 (mm-valid-and-fit-image-p 'xpm handle
)))
123 (mm-valid-and-fit-image-p 'xpm handle
)))
127 (mm-valid-and-fit-image-p 'bmp handle
)))
128 ("image/x-portable-bitmap"
131 (mm-valid-and-fit-image-p 'pbm handle
)))
132 ("text/plain" mm-inline-text identity
)
133 ("text/enriched" mm-inline-text identity
)
134 ("text/richtext" mm-inline-text identity
)
135 ("text/x-patch" mm-display-patch-inline
137 (locate-library "diff-mode")))
138 ("application/emacs-lisp" mm-display-elisp-inline identity
)
139 ("application/x-emacs-lisp" mm-display-elisp-inline identity
)
141 ,(if (fboundp 'mm-inline-text-html
) 'mm-inline-text-html
'mm-inline-text
)
143 (or (and (boundp 'mm-inline-text-html-renderer
)
144 mm-inline-text-html-renderer
)
145 (and (boundp 'mm-text-html-renderer
) mm-text-html-renderer
))))
147 mh-mm-inline-text-vcard
149 (or (featurep 'vcard
)
150 (locate-library "vcard"))))
151 ("message/delivery-status" mm-inline-text identity
)
152 ("message/rfc822" mh-mm-inline-message identity
)
153 ;;("message/partial" mm-inline-partial identity)
154 ;;("message/external-body" mm-inline-external-body identity)
155 ("text/.*" mm-inline-text identity
)
156 ("audio/wav" mm-inline-audio
158 (and (or (featurep 'nas-sound
) (featurep 'native-sound
))
159 (device-sound-enabled-p))))
163 (and (or (featurep 'nas-sound
) (featurep 'native-sound
))
164 (device-sound-enabled-p))))
165 ("application/pgp-signature" ignore identity
)
166 ("application/x-pkcs7-signature" ignore identity
)
167 ("application/pkcs7-signature" ignore identity
)
168 ("application/x-pkcs7-mime" ignore identity
)
169 ("application/pkcs7-mime" ignore identity
)
170 ("multipart/alternative" ignore identity
)
171 ("multipart/mixed" ignore identity
)
172 ("multipart/related" ignore identity
)
173 ;; Disable audio and image
174 ("audio/.*" ignore ignore
)
175 ("image/.*" ignore ignore
)
176 ;; Default to displaying as text
177 (".*" mm-inline-text mh-mm-readable-p
))
178 "Alist of media types/tests saying whether types can be displayed inline.")
180 (defvar mh-mime-save-parts-directory nil
181 "Default to use for `mh-mime-save-parts-default-directory'.
184 ;; Copied from gnus-art.el (should be checked for other cool things that can
185 ;; be added to the buttons)
186 (defvar mh-mime-button-commands
187 '((mh-press-button "\r" "Toggle Display")))
188 (defvar mh-mime-button-map
189 (let ((map (make-sparse-keymap)))
190 (unless (>= (string-to-number emacs-version
) 21)
191 ;; XEmacs doesn't care.
192 (set-keymap-parent map mh-show-mode-map
))
194 (define-key map
[mouse-2
] 'mh-push-button
))
196 (define-key map
'(button2) 'mh-push-button
))
197 (dolist (c mh-mime-button-commands
)
198 (define-key map
(cadr c
) (car c
)))
200 (defvar mh-mime-button-line-format-alist
205 (defvar mh-mime-button-line-format
"%{%([%p. %d%T]%)%}%e\n")
206 (defvar mh-mime-security-button-pressed nil
)
207 (defvar mh-mime-security-button-line-format
"%{%([[%t:%i]%D]%)%}\n")
208 (defvar mh-mime-security-button-end-line-format
"%{%([[End of %t]%D]%)%}\n")
209 (defvar mh-mime-security-button-line-format-alist
213 (?D pressed-details ?s
)))
214 (defvar mh-mime-security-button-map
215 (let ((map (make-sparse-keymap)))
216 (unless (>= (string-to-number emacs-version
) 21)
217 (set-keymap-parent map mh-show-mode-map
))
218 (define-key map
"\r" 'mh-press-button
)
220 (define-key map
[mouse-2
] 'mh-push-button
))
222 (define-key map
'(button2) 'mh-push-button
))
227 ;;; MH-Folder Commands
232 (defun mh-display-with-external-viewer (part-index)
233 "View attachment externally.
235 If Emacs does not know how to view an attachment, you could save
236 it into a file and then run some program to open it. It is
237 easier, however, to launch the program directly from MH-E with
238 this command. While you'll most likely use this to view
239 spreadsheets and documents, it is also useful to use your browser
240 to view HTML attachments with higher fidelity than what Emacs can
243 This command displays the attachment associated with the button
244 under the cursor. If the cursor is not located over a button,
245 then the cursor first moves to the next button, wrapping to the
246 beginning of the message if necessary. You can provide a numeric
247 prefix argument PART-INDEX to view the attachment labeled with
250 This command tries to provide a reasonable default for the viewer
251 by calling the Emacs function `mailcap-mime-info'. This function
252 usually reads the file \"/etc/mailcap\"."
254 (when (consp part-index
) (setq part-index
(car part-index
)))
255 (mh-folder-mime-action
258 (let* ((part (get-text-property (point) 'mh-data
))
259 (type (mm-handle-media-type part
))
260 (methods (mapcar (lambda (x) (list (cdr (assoc 'viewer x
))))
261 (mailcap-mime-info type
'all
)))
263 (prompt (format "Viewer%s: " (if def
264 (format " (default %s)" def
)
266 (method (completing-read prompt methods nil nil nil nil def
))
267 (folder mh-show-folder-buffer
)
268 (buffer-read-only nil
))
269 (when (string-match "^[^% \t]+$" method
)
270 (setq method
(concat method
" %s")))
271 (flet ((mm-handle-set-external-undisplayer (handle function
)
272 (mh-handle-set-external-undisplayer folder handle function
)))
273 (unwind-protect (mm-display-external part method
)
274 (set-buffer-modified-p nil
)))))
278 (defun mh-folder-inline-mime-part (part-index)
279 "Show attachment verbatim.
281 You can view the raw contents of an attachment with this command.
282 This command displays (or hides) the contents of the attachment
283 associated with the button under the cursor verbatim. If the
284 cursor is not located over a button, then the cursor first moves
285 to the next button, wrapping to the beginning of the message if
288 You can also provide a numeric prefix argument PART-INDEX to view
289 the attachment labeled with that number."
291 (when (consp part-index
) (setq part-index
(car part-index
)))
292 (mh-folder-mime-action part-index
#'mh-mime-inline-part nil
))
294 (defun mh-mime-inline-part ()
295 "Toggle display of the raw MIME part."
297 (let* ((buffer-read-only nil
)
298 (data (get-text-property (point) 'mh-data
))
299 (inserted-flag (get-text-property (point) 'mh-mime-inserted
))
300 (displayed-flag (mm-handle-displayed-p data
))
303 (cond ((and data
(not inserted-flag
) (not displayed-flag
))
304 (let ((contents (mm-get-part data
)))
305 (add-text-properties (mh-line-beginning-position)
306 (mh-line-end-position) '(mh-mime-inserted t
))
307 (setq start
(point-marker))
309 (mm-insert-inline data contents
)
310 (setq end
(point-marker))
312 start
(progn (goto-char start
) (mh-line-end-position))
313 `(mh-region (,start .
,end
)))))
314 ((and data
(or inserted-flag displayed-flag
))
316 (message "MIME part already inserted")))
318 (set-buffer-modified-p nil
)))
321 (defun mh-folder-save-mime-part (part-index)
322 "Save (output) attachment.
324 This command saves the attachment associated with the button under the
325 cursor. If the cursor is not located over a button, then the cursor
326 first moves to the next button, wrapping to the beginning of the
327 message if necessary.
329 You can also provide a numeric prefix argument PART-INDEX to save the
330 attachment labeled with that number.
332 This command prompts you for a filename and suggests a specific name
335 (when (consp part-index
) (setq part-index
(car part-index
)))
336 (mh-folder-mime-action part-index
#'mh-mime-save-part nil
))
338 (defun mh-mime-save-part ()
339 "Save MIME part at point."
341 (let ((data (get-text-property (point) 'mh-data
)))
343 (let ((mm-default-directory
344 (file-name-as-directory (or mh-mime-save-parts-directory
345 default-directory
))))
346 (mh-mm-save-part data
)
347 (setq mh-mime-save-parts-directory mm-default-directory
)))))
350 (defun mh-folder-toggle-mime-part (part-index)
353 This command displays (or hides) the attachment associated with
354 the button under the cursor. If the cursor is not located over a
355 button, then the cursor first moves to the next button, wrapping
356 to the beginning of the message if necessary. This command has
357 the advantage over related commands of working from the MH-Folder
360 You can also provide a numeric prefix argument PART-INDEX to view
361 the attachment labeled with that number. If Emacs does not know
362 how to display the attachment, then Emacs offers to save the
363 attachment in a file."
365 (when (consp part-index
) (setq part-index
(car part-index
)))
366 (mh-folder-mime-action part-index
#'mh-press-button t
))
369 (defun mh-mime-save-parts (prompt)
372 You can save all of the attachments at once with this command.
373 The attachments are saved in the directory specified by the
374 option `mh-mime-save-parts-default-directory' unless you use a
375 prefix argument PROMPT in which case you are prompted for the
376 directory. These directories may be superseded by MH profile
377 components, since this function calls on \"mhstore\" (\"mhn\") to
380 (let ((msg (if (eq major-mode
'mh-show-mode
)
381 (mh-show-buffer-message-number)
383 (folder (if (eq major-mode
'mh-show-mode
)
384 mh-show-folder-buffer
386 (command (if (mh-variant-p 'nmh
) "mhstore" "mhn"))
390 (equal nil mh-mime-save-parts-default-directory
)
391 (equal t mh-mime-save-parts-default-directory
))
392 (not mh-mime-save-parts-directory
))
393 (read-file-name "Store in directory: " nil nil t nil
))
395 (equal t mh-mime-save-parts-default-directory
))
396 mh-mime-save-parts-directory
)
397 (read-file-name (format
398 "Store in directory (default %s): "
399 mh-mime-save-parts-directory
)
400 "" mh-mime-save-parts-directory t
""))
401 ((stringp mh-mime-save-parts-default-directory
)
402 mh-mime-save-parts-default-directory
)
404 mh-mime-save-parts-directory
))))
405 (if (and (equal directory
"") mh-mime-save-parts-directory
)
406 (setq directory mh-mime-save-parts-directory
))
407 (if (not (file-directory-p directory
))
408 (message "No directory specified")
409 (if (equal nil mh-mime-save-parts-default-directory
)
410 (setq mh-mime-save-parts-directory directory
))
412 (set-buffer (get-buffer-create mh-log-buffer
))
414 (setq mh-mime-save-parts-directory directory
)
415 (let ((initial-size (mh-truncate-log-buffer)))
417 (expand-file-name command mh-progs
) nil t nil
418 (mh-list-to-string (list folder msg
"-auto"
419 (if (not (mh-variant-p 'nmh
))
421 (if (> (buffer-size) initial-size
)
422 (save-window-excursion
423 (switch-to-buffer-other-window mh-log-buffer
)
427 (defun mh-toggle-mh-decode-mime-flag ()
428 "Toggle the value of `mh-decode-mime-flag'."
430 (setq mh-decode-mime-flag
(not mh-decode-mime-flag
))
432 (message "%s" (if mh-decode-mime-flag
433 "Processing attachments normally"
434 "Displaying raw message")))
437 (defun mh-toggle-mime-buttons ()
438 "Toggle option `mh-display-buttons-for-inline-parts-flag'."
440 (setq mh-display-buttons-for-inline-parts-flag
441 (not mh-display-buttons-for-inline-parts-flag
))
446 ;;; MIME Display Routines
448 (defun mh-mm-inline-message (handle)
449 "Display message, HANDLE.
450 The function decodes the message and displays it. It avoids
451 decoding the same message multiple times."
453 (clean-message-header mh-clean-message-header-flag
)
454 (invisible-headers mh-invisible-header-fields-compiled
)
455 (visible-headers nil
))
458 (narrow-to-region b b
)
459 (mm-insert-part handle
)
461 (or (gethash handle
(mh-mime-handles-cache (mh-buffer-data)))
462 (setf (gethash handle
(mh-mime-handles-cache (mh-buffer-data)))
463 (let ((handles (mm-dissect-buffer nil
)))
465 (mh-mm-uu-dissect-text-parts handles
)
466 (setq handles
(mm-uu-dissect)))
467 (setf (mh-mime-handles (mh-buffer-data))
469 handles
(mh-mime-handles (mh-buffer-data))))
472 (goto-char (point-min))
474 (cond (clean-message-header
475 (mh-clean-msg-header (point-min)
478 (goto-char (point-min)))
480 (mh-start-of-uncleaned-message)))
481 (mh-decode-message-header)
483 ;; The other highlighting types don't need anything special
484 (when (eq mh-highlight-citation-style
'gnus
)
485 (mh-gnus-article-highlight-citation))
486 (goto-char (point-min))
487 (insert "\n------- Forwarded Message\n\n")
489 (mh-display-emphasis)
490 (mm-handle-set-undisplayer
493 (let (buffer-read-only)
494 (if (fboundp 'remove-specifier
)
495 ;; This is only valid on XEmacs.
496 (mapcar (lambda (prop)
498 (face-property 'default prop
) (current-buffer)))
499 '(background background-pixmap foreground
)))
500 (delete-region ,(point-min-marker) ,(point-max-marker)))))))))
503 (defun mh-decode-message-header ()
504 "Decode RFC2047 encoded message header fields."
505 (when mh-decode-mime-flag
506 (let ((buffer-read-only nil
))
507 (rfc2047-decode-region (point-min) (mh-mail-header-end)))))
510 (defun mh-mime-display (&optional pre-dissected-handles
)
511 "Display (and possibly decode) MIME handles.
512 Optional argument, PRE-DISSECTED-HANDLES is a list of MIME
513 handles. If present they are displayed otherwise the buffer is
514 parsed and then displayed."
516 (folder mh-show-folder-buffer
)
517 (raw-message-data (buffer-string)))
518 (flet ((mm-handle-set-external-undisplayer
520 (mh-handle-set-external-undisplayer folder handle function
)))
521 (goto-char (point-min))
522 (unless (search-forward "\n\n" nil t
)
523 (goto-char (point-max))
528 ;; If needed dissect the current buffer
529 (if pre-dissected-handles
530 (setq handles pre-dissected-handles
)
531 (if (setq handles
(mm-dissect-buffer nil
))
532 (mh-mm-uu-dissect-text-parts handles
)
533 (setq handles
(mm-uu-dissect)))
534 (setf (mh-mime-handles (mh-buffer-data))
535 (mh-mm-merge-handles handles
536 (mh-mime-handles (mh-buffer-data))))
538 (mh-decode-message-body)))
541 (or (not (stringp (car handles
)))
543 ;; Go to start of message body
544 (goto-char (point-min))
545 (or (search-forward "\n\n" nil t
)
546 (goto-char (point-max)))
549 (delete-region (point) (point-max))
551 ;; Display the MIME handles
552 (mh-mime-display-part handles
))
554 (mh-signature-highlight))))
556 (message "Could not display body: %s" (error-message-string err
))
557 (delete-region (point-min) (point-max))
558 (insert raw-message-data
))))))
560 (defun mh-decode-message-body ()
561 "Decode message based on charset.
562 If message has been encoded for transfer take that into account."
563 (let (ct charset cte
)
564 (goto-char (point-min))
565 (re-search-forward "\n\n" nil t
)
567 (narrow-to-region (point-min) (point))
568 (setq ct
(ignore-errors (mail-header-parse-content-type
569 (message-fetch-field "Content-Type" t
)))
570 charset
(mail-content-type-get ct
'charset
)
571 cte
(message-fetch-field "Content-Transfer-Encoding")))
572 (when (stringp cte
) (setq cte
(mail-header-strip cte
)))
573 (when (or (not ct
) (equal (car ct
) "text/plain"))
575 (narrow-to-region (min (1+ (mh-mail-header-end)) (point-max))
577 (mm-decode-body charset
578 (and cte
(intern (downcase
579 (gnus-strip-whitespace cte
))))
582 (defun mh-mime-display-part (handle)
583 "Decides the viewer to call based on the type of HANDLE."
586 ((not (stringp (car handle
)))
587 (mh-mime-display-single handle
))
588 ((equal (car handle
) "multipart/alternative")
589 (mh-mime-display-alternative (cdr handle
)))
590 ((and mh-pgp-support-flag
591 (or (equal (car handle
) "multipart/signed")
592 (equal (car handle
) "multipart/encrypted")))
593 (mh-mime-display-security handle
))
595 (mh-mime-display-mixed (cdr handle
)))))
597 (defun mh-mime-display-mixed (handles)
598 "Display the list of MIME parts, HANDLES recursively."
599 (mapcar #'mh-mime-display-part handles
))
601 (defun mh-mime-display-alternative (handles)
602 "Choose among the alternatives, HANDLES the part that will be displayed.
603 If no part is preferred then all the parts are displayed."
604 (let* ((preferred (mm-preferred-alternative handles
))
605 (others (loop for x in handles unless
(eq x preferred
) collect x
)))
606 (cond ((and preferred
607 (stringp (car preferred
)))
608 (mh-mime-display-part preferred
)
609 (mh-mime-maybe-display-alternatives others
))
612 (narrow-to-region (point) (if (eobp) (point) (1+ (point))))
613 (mh-mime-display-single preferred
)
614 (mh-mime-maybe-display-alternatives others
)
615 (goto-char (point-max))))
617 (mh-mime-display-mixed handles
)))))
619 (defun mh-mime-maybe-display-alternatives (alternatives)
620 "Show buttons for ALTERNATIVES.
621 If `mh-mime-display-alternatives-flag' is non-nil then display
622 buttons for alternative parts that are usually suppressed."
623 (when (and mh-display-buttons-for-alternatives-flag alternatives
)
624 (insert "\n----------------------------------------------------\n")
625 (insert "Alternatives:\n")
626 (dolist (x alternatives
)
628 (mh-insert-mime-button x
(mh-mime-part-index x
) nil
))
629 (insert "\n----------------------------------------------------\n")))
631 (defun mh-mime-display-security (handle)
632 "Display PGP encrypted/signed message, HANDLE."
634 (narrow-to-region (point) (point))
636 (mh-insert-mime-security-button handle
)
637 (mh-mime-display-mixed (cdr handle
))
639 (let ((mh-mime-security-button-line-format
640 mh-mime-security-button-end-line-format
))
641 (mh-insert-mime-security-button handle
))
642 (mh-mm-set-handle-multipart-parameter
643 handle
'mh-region
(cons (point-min-marker) (point-max-marker)))))
645 (defun mh-mime-display-single (handle)
646 "Display a leaf node, HANDLE in the MIME tree."
647 (let* ((type (mm-handle-media-type handle
))
648 (small-image-flag (mh-small-image-p handle
))
649 (attachmentp (equal (car (mm-handle-disposition handle
))
651 (inlinep (and (equal (car (mm-handle-disposition handle
)) "inline")
652 (mm-inlinable-p handle
)
653 (mm-inlined-p handle
)))
654 (displayp (or inlinep
; show if inline OR
655 (mh-inline-vcard-p handle
); inline vcard OR
656 (and (not attachmentp
) ; if not an attachment
657 (or small-image-flag
; and small image
658 ; and user wants inline
660 (mm-handle-media-supertype handle
)
662 (mm-inlinable-p handle
)
663 (mm-inlined-p handle
)))))))
665 (narrow-to-region (point) (if (eobp) (point) (1+ (point))))
666 (cond ((and mh-pgp-support-flag
667 (equal type
"application/pgp-signature"))
668 nil
) ; skip signatures as they are already handled...
671 (mh-insert-mime-button handle
(mh-mime-part-index handle
) nil
))
673 (not mh-display-buttons-for-inline-parts-flag
))
674 (or (mm-display-part handle
)
675 (mm-display-part handle
))
676 (mh-signature-highlight handle
))
678 mh-display-buttons-for-inline-parts-flag
)
680 (mh-insert-mime-button handle
(mh-mime-part-index handle
) nil
)
682 (mh-mm-display-part handle
)))
683 (goto-char (point-max)))))
685 ;; There is a bug in Gnus inline image display due to which an extra line
686 ;; gets inserted every time it is viewed. To work around that problem we are
687 ;; using an extra property 'mh-region to remember the region that is added
688 ;; when the button is clicked. The region is then deleted to make sure that
689 ;; no extra lines get inserted.
690 (defun mh-mm-display-part (handle)
691 "Toggle display of button for MIME part, HANDLE."
693 (let ((id (get-text-property (point) 'mh-part
))
695 (window (selected-window))
696 (mail-parse-charset 'nil
)
697 (mail-parse-ignored-charsets nil
)
698 region buffer-read-only
)
701 (let ((win (get-buffer-window (current-buffer) t
)))
706 (if (mm-handle-displayed-p handle
)
707 ;; This will remove the part.
709 ;; Delete the button and displayed part (if any)
710 (let ((region (get-text-property point
'mh-region
)))
712 (mh-funcall-if-exists
713 remove-images
(car region
) (cdr region
)))
714 (mm-display-part handle
)
716 (delete-region (car region
) (cdr region
))))
717 ;; Delete button (if it still remains). This happens for
718 ;; externally displayed parts where the previous step does
721 (delete-region (point) (progn (forward-line) (point)))))
723 (delete-region (point) (progn (forward-line 1) (point)))
724 (narrow-to-region (point) (point))
725 ;; Maybe we need another unwind-protect here.
726 (when (equal (mm-handle-media-supertype handle
) "image")
728 (when (and (not (eq (ignore-errors (mm-display-part handle
))
730 (equal (mm-handle-media-supertype handle
)
732 (goto-char (point-min))
734 (when (equal (mm-handle-media-supertype handle
) "text")
735 (when (eq mh-highlight-citation-style
'gnus
)
736 (mh-gnus-article-highlight-citation))
738 (mh-display-emphasis)
739 (mh-signature-highlight handle
))
740 (setq region
(cons (progn (goto-char (point-min))
742 (progn (goto-char (point-max))
744 (when (window-live-p window
)
745 (select-window window
))
748 (mh-insert-mime-button handle id
(mm-handle-displayed-p handle
))
751 (add-text-properties (mh-line-beginning-position)
752 (mh-line-end-position)
753 `(mh-region ,region
)))))))
755 (defun mh-mime-part-index (handle)
756 "Generate the button number for MIME part, HANDLE.
757 Notice that a hash table is used to display the same number when
758 buttons need to be displayed multiple times (for instance when
759 nested messages are opened)."
760 (or (gethash handle
(mh-mime-part-index-hash (mh-buffer-data)))
761 (setf (gethash handle
(mh-mime-part-index-hash (mh-buffer-data)))
762 (incf (mh-mime-parts-count (mh-buffer-data))))))
764 (defun mh-small-image-p (handle)
765 "Decide whether HANDLE is a \"small\" image that can be displayed inline.
766 This is only useful if a Content-Disposition header is not present."
767 (let ((media-test (caddr (assoc (car (mm-handle-type handle
))
768 mh-mm-inline-media-tests
)))
769 (mm-inline-large-images t
))
771 (equal (mm-handle-media-supertype handle
) "image")
772 (funcall media-test handle
) ; Since mm-inline-large-images is T,
773 ; this only tells us if the image is
774 ; something that emacs can display
775 (let* ((image (mm-get-image handle
)))
777 (and (mh-funcall-if-exists glyphp image
)
778 (< (glyph-width image
)
779 (or mh-max-inline-image-width
(window-pixel-width)))
780 (< (glyph-height image
)
781 (or mh-max-inline-image-height
782 (window-pixel-height)))))
784 (let ((size (mh-funcall-if-exists image-size image
)))
786 (< (cdr size
) (or mh-max-inline-image-height
787 (1- (window-height))))
788 (< (car size
) (or mh-max-inline-image-width
789 (window-width)))))))))))
791 (defun mh-inline-vcard-p (handle)
792 "Decide if HANDLE is a vcard that must be displayed inline."
793 (let ((type (mm-handle-type handle
)))
794 (and (or (featurep 'vcard
) (fboundp 'vcard-pretty-print
))
796 (equal (car type
) "text/x-vcard")
800 (goto-char (point-min))
801 (not (mh-signature-separator-p)))))))
803 (defun mh-signature-highlight (&optional handle
)
804 "Highlight message signature in HANDLE.
805 The optional argument, HANDLE is a MIME handle if the function is
806 being used to highlight the signature in a MIME part."
808 (cond ((not handle
) "^-- $")
809 ((not (and (equal (mm-handle-media-supertype handle
) "text")
810 (equal (mm-handle-media-subtype handle
) "html")))
812 ((eq (mh-mm-text-html-renderer) 'lynx
) "^ --$")
815 (goto-char (point-max))
816 (when (re-search-backward regexp nil t
)
818 (let ((ov (make-overlay (point) (point-max))))
819 (overlay-put ov
'face
'mh-show-signature
)
820 (overlay-put ov
'evaporate t
)))
822 (set-extent-property (make-extent (point) (point-max))
823 'face
'mh-show-signature
))))))
830 (defvar dots
) ; XEmacs
831 (defvar type
) ; XEmacs
834 (defun mh-insert-mime-button (handle index displayed
)
835 "Insert MIME button for HANDLE.
836 INDEX is the part number that will be DISPLAYED. It is also used
837 by commands like \"K v\" which operate on individual MIME parts."
838 ;; The button could be displayed by a previous decode. In that case
839 ;; undisplay it if we need a hidden button.
840 (when (and (mm-handle-displayed-p handle
) (not displayed
))
841 (mm-display-part handle
))
842 (let ((name (or (mail-content-type-get (mm-handle-type handle
) 'name
)
843 (mail-content-type-get (mm-handle-disposition handle
)
845 (mail-content-type-get (mm-handle-type handle
) 'url
)
847 (type (mm-handle-media-type handle
))
848 (description (mail-decode-encoded-word-string
849 (or (mm-handle-description handle
) "")))
850 (dots (if (or displayed
(mm-handle-displayed-p handle
)) " " "..."))
852 (if (string-match ".*/" name
) (setq name
(substring name
(match-end 0))))
853 (setq long-type
(concat type
(and (not (equal name
""))
854 (concat "; " name
))))
855 (unless (equal description
"")
856 (setq long-type
(concat " --- " long-type
)))
857 (unless (bolp) (insert "\n"))
860 mh-mime-button-line-format mh-mime-button-line-format-alist
861 `(,@(mh-gnus-local-map-property mh-mime-button-map
)
862 mh-callback mh-mm-display-part
866 (widget-convert-button
869 :action
'mh-widget-press-button
870 :button-keymap mh-mime-button-map
872 "Mouse-2 click or press RET (in show buffer) to toggle display")
873 (dolist (ov (mh-funcall-if-exists overlays-in begin end
))
874 (mh-funcall-if-exists overlay-put ov
'evaporate t
))))
877 (defvar mm-verify-function-alist
) ; < Emacs 22
878 (defvar mm-decrypt-function-alist
) ; < Emacs 22
879 (defvar pressed-details
) ; XEmacs
881 (defun mh-insert-mime-security-button (handle)
882 "Display buttons for PGP message, HANDLE."
883 (let* ((protocol (mh-mm-handle-multipart-ctl-parameter handle
'protocol
))
884 (crypto-type (or (nth 2 (assoc protocol mm-verify-function-alist
))
885 (nth 2 (assoc protocol mm-decrypt-function-alist
))
887 (type (concat crypto-type
888 (if (equal (car handle
) "multipart/signed")
889 " Signed" " Encrypted")
891 (info (or (mh-mm-handle-multipart-ctl-parameter handle
'gnus-info
)
893 (details (mh-mm-handle-multipart-ctl-parameter handle
'gnus-details
))
894 pressed-details begin end face
)
895 (setq details
(if details
(concat "\n" details
) ""))
896 (setq pressed-details
(if mh-mime-security-button-pressed details
""))
897 (setq face
(mh-mime-security-button-face info
))
898 (unless (bolp) (insert "\n"))
901 mh-mime-security-button-line-format
902 mh-mime-security-button-line-format-alist
903 `(,@(mh-gnus-local-map-property mh-mime-security-button-map
)
904 mh-button-pressed
,mh-mime-security-button-pressed
905 mh-callback mh-mime-security-press-button
906 mh-line-format
,mh-mime-security-button-line-format
909 (widget-convert-button 'link begin end
911 :action
'mh-widget-press-button
912 :button-keymap mh-mime-security-button-map
914 :help-echo
"Mouse-2 click or press RET (in show buffer) to see security details.")
915 (dolist (ov (mh-funcall-if-exists overlays-in begin end
))
916 (mh-funcall-if-exists overlay-put ov
'evaporate t
))
917 (when (equal info
"Failed")
918 (let* ((type (if (equal (car handle
) "multipart/signed")
919 "verification" "decryption"))
920 (warning (if (equal type
"decryption")
921 "(passphrase may be incorrect)" "")))
922 (message "%s %s failed %s" crypto-type type warning
)))))
924 (defun mh-mime-security-button-face (info)
925 "Return the button face to use for encrypted/signed mail based on INFO."
926 (cond ((string-match "OK" info
) ;Decrypted mail
928 ((string-match "Failed" info
) ;Decryption failed or signature invalid
930 ((string-match "Undecided" info
);Unprocessed mail
931 'mh-show-pgg-unknown
)
932 ((string-match "Untrusted" info
);Key not trusted
933 'mh-show-pgg-unknown
)
941 (defun mh-folder-mime-action (part-index action include-security-flag
)
942 "Go to PART-INDEX and carry out ACTION.
944 If PART-INDEX is nil then go to the next part in the buffer. The
945 search for the next buffer wraps around if end of buffer is reached.
946 If argument INCLUDE-SECURITY-FLAG is non-nil then include security
947 info buttons when searching for a suitable parts."
948 (unless mh-showing-mode
950 (mh-in-show-buffer (mh-show-buffer)
954 (let ((part (get-text-property p
'mh-part
)))
955 (and (integerp part
) (= part part-index
)))))
957 (if include-security-flag
958 (get-text-property p
'mh-data
)
959 (integerp (get-text-property p
'mh-part
)))))))
961 (cond ((and (get-text-property point
'mh-part
)
962 (or (null part-index
)
963 (= (get-text-property point
'mh-part
) part-index
)))
965 ((and (get-text-property point
'mh-data
)
966 include-security-flag
970 (mh-goto-next-button nil criterion
)
971 (if (= (point) point
)
972 (message "No matching MIME part found")
973 (funcall action
)))))))
976 (defun mh-goto-next-button (backward-flag &optional criterion
)
977 "Search for next button satisfying criterion.
979 If BACKWARD-FLAG is non-nil search backward in the buffer for a mime
981 If CRITERION is a function or a symbol which has a function binding
982 then that function must return non-nil at the button we stop."
983 (unless (or (and (symbolp criterion
) (fboundp criterion
))
984 (functionp criterion
))
985 (setq criterion
(lambda (x) t
)))
986 ;; Move to the next button in the buffer satisfying criterion
987 (goto-char (or (save-excursion
989 ;; Find point before current button
990 (let ((point-before-current-button
992 (while (get-text-property (point) 'mh-data
)
993 (unless (= (forward-line
994 (if backward-flag
1 -
1))
997 (goto-char (point-min))
998 (goto-char (point-max)))))
1000 ;; Skip over current button
1001 (while (and (get-text-property (point) 'mh-data
)
1002 (not (if backward-flag
(bobp) (eobp))))
1003 (forward-line (if backward-flag -
1 1)))
1004 ;; Stop at next MIME button if any exists.
1007 (unless (= (forward-line
1008 (if backward-flag -
1 1))
1011 (goto-char (point-max))
1012 (goto-char (point-min)))
1013 (beginning-of-line))
1015 point-before-current-button
)
1016 (when (and (get-text-property (point) 'mh-data
)
1017 (funcall criterion
(point)))
1018 (return-from loop
(point))))
1022 (defun mh-widget-press-button (widget el
)
1023 "Callback for widget, WIDGET.
1024 Parameter EL is unused."
1025 (goto-char (widget-get widget
:from
))
1028 (defun mh-press-button ()
1029 "View contents of button.
1031 This command is a toggle so if you use it again on the same
1032 attachment, the attachment is hidden."
1034 (let ((mm-inline-media-tests mh-mm-inline-media-tests
)
1035 (data (get-text-property (point) 'mh-data
))
1036 (function (get-text-property (point) 'mh-callback
))
1037 (buffer-read-only nil
)
1038 (folder mh-show-folder-buffer
))
1039 (flet ((mm-handle-set-external-undisplayer
1041 (mh-handle-set-external-undisplayer folder handle function
)))
1042 (when (and function
(eolp))
1044 (unwind-protect (and function
(funcall function data
))
1045 (set-buffer-modified-p nil
)))))
1047 (defun mh-push-button (event)
1048 "Click MIME button for EVENT.
1050 If the MIME part is visible then it is removed. Otherwise the
1051 part is displayed. This function is called when the mouse is used
1052 to click the MIME button."
1054 (mh-do-at-event-location event
1055 (let ((folder mh-show-folder-buffer
)
1056 (mm-inline-media-tests mh-mm-inline-media-tests
)
1057 (data (get-text-property (point) 'mh-data
))
1058 (function (get-text-property (point) 'mh-callback
)))
1059 (flet ((mm-handle-set-external-undisplayer (handle func
)
1060 (mh-handle-set-external-undisplayer folder handle func
)))
1061 (and function
(funcall function data
))))))
1063 (defun mh-handle-set-external-undisplayer (folder handle function
)
1064 "Replacement for `mm-handle-set-external-undisplayer'.
1066 This is only called in recent versions of Gnus. The MIME handles
1067 are stored in data structures corresponding to MH-E folder buffer
1068 FOLDER instead of in Gnus (as in the original). The MIME part,
1069 HANDLE is associated with the undisplayer FUNCTION."
1070 (if (mh-mm-keep-viewer-alive-p handle
)
1071 (let ((new-handle (copy-sequence handle
)))
1072 (mm-handle-set-undisplayer new-handle function
)
1073 (mm-handle-set-undisplayer handle nil
)
1076 (push new-handle
(mh-mime-handles (mh-buffer-data)))))
1077 (mm-handle-set-undisplayer handle function
)))
1079 (defun mh-mime-security-press-button (handle)
1080 "Callback from security button for part HANDLE."
1081 (if (mh-mm-handle-multipart-ctl-parameter handle
'gnus-info
)
1082 (mh-mime-security-show-details handle
)
1083 (let ((region (mh-mm-handle-multipart-ctl-parameter handle
'mh-region
))
1085 (setq point
(point))
1086 (goto-char (car region
))
1087 (delete-region (car region
) (cdr region
))
1088 (with-current-buffer (mh-mm-handle-multipart-ctl-parameter handle
'buffer
)
1089 (let* ((mm-verify-option 'known
)
1090 (mm-decrypt-option 'known
)
1091 (new (mh-mm-possibly-verify-or-decrypt (cdr handle
) handle
)))
1092 (unless (eq new
(cdr handle
))
1093 (mh-mm-destroy-parts (cdr handle
))
1094 (setcdr handle new
))))
1095 (mh-mime-display-security handle
)
1096 (goto-char point
))))
1098 ;; I rewrote the security part because Gnus doesn't seem to ever minimize
1099 ;; the button. That is once the mime-security button is pressed there seems
1100 ;; to be no way of getting rid of the inserted text.
1101 (defun mh-mime-security-show-details (handle)
1102 "Toggle display of detailed security info for HANDLE."
1103 (let ((details (mh-mm-handle-multipart-ctl-parameter handle
'gnus-details
)))
1105 (let ((mh-mime-security-button-pressed
1106 (not (get-text-property (point) 'mh-button-pressed
)))
1107 (mh-mime-security-button-line-format
1108 (get-text-property (point) 'mh-line-format
)))
1110 (while (eq (get-text-property (point) 'mh-line-format
)
1111 mh-mime-security-button-line-format
)
1115 (narrow-to-region (point) (point))
1116 (mh-insert-mime-security-button handle
))
1119 (or (text-property-not-all
1121 'mh-line-format mh-mime-security-button-line-format
)
1123 (forward-line -
1)))))
1127 ;;; Miscellaneous Article Washing
1130 (defun mh-add-missing-mime-version-header ()
1131 "Some mail programs don't put a MIME-Version header.
1132 I have seen this only in spam, so maybe we shouldn't fix
1135 (goto-char (point-min))
1136 (re-search-forward "\n\n" nil t
)
1138 (narrow-to-region (point-min) (point))
1139 (when (and (message-fetch-field "content-type")
1140 (not (message-fetch-field "mime-version")))
1141 (goto-char (point-min))
1142 (insert "MIME-Version: 1.0\n")))))
1145 (defun mh-display-smileys ()
1147 (when (and mh-graphical-smileys-flag
(mh-small-show-buffer-p))
1148 (mh-funcall-if-exists smiley-region
(point-min) (point-max))))
1151 (defun mh-display-emphasis ()
1152 "Display graphical emphasis."
1153 (when (and mh-graphical-emphasis-flag
(mh-small-show-buffer-p))
1154 (flet ((article-goto-body ())) ; shadow this function to do nothing
1156 (goto-char (point-min))
1157 (article-emphasize)))))
1159 (defun mh-small-show-buffer-p ()
1160 "Check if show buffer is small.
1161 This is used to decide if smileys and graphical emphasis should be
1164 (when (and (boundp 'font-lock-maximum-size
) font-lock-maximum-size
)
1165 (cond ((numberp font-lock-maximum-size
)
1166 (setq max font-lock-maximum-size
))
1167 ((listp font-lock-maximum-size
)
1168 (setq max
(cdr (or (assoc 'mh-show-mode font-lock-maximum-size
)
1169 (assoc t font-lock-maximum-size
)))))))
1170 (or (not (numberp max
)) (>= (/ max
8) (buffer-size)))))
1174 ;;; MH-Letter Commands
1176 ;; MH-E commands are alphabetical; specific support routines follow command.
1179 (defun mh-compose-forward (&optional description folder range
)
1180 "Add tag to forward a message.
1182 You are prompted for a content DESCRIPTION, the name of the
1183 FOLDER in which the messages to forward are located, and a RANGE
1184 of messages, which defaults to the current message in that
1185 folder. Check the documentation of `mh-interactive-range' to see
1186 how RANGE is read in interactive use.
1188 The option `mh-compose-insertion' controls what type of tags are inserted."
1191 (mml-minibuffer-read-description))
1193 (mh-prompt-for-folder "Message from"
1194 mh-sent-from-folder nil
))
1196 (if (and (equal folder mh-sent-from-folder
)
1197 (numberp mh-sent-from-msg
))
1199 (nth 0 (mh-translate-range folder
"cur"))))
1201 (mh-read-range "Forward" folder
1203 (number-to-string default
))
1206 (list description folder range
)))
1207 (let ((messages (mapconcat 'identity
(mh-list-to-string range
) " ")))
1208 (dolist (message (mh-translate-range folder messages
))
1209 (if (equal mh-compose-insertion
'mml
)
1210 (mh-mml-forward-message description folder
(format "%s" message
))
1211 (mh-mh-forward-message description folder
(format "%s" message
))))))
1214 (defun mh-mml-forward-message (description folder message
)
1215 "Forward a message as attachment.
1217 The function will prompt the user for a DESCRIPTION, a FOLDER and
1219 (let ((msg (if (and (equal message
"") (numberp mh-sent-from-msg
))
1221 (string-to-number message
))))
1222 (cond ((integerp msg
)
1223 (if (string= "" description
)
1224 ;; Rationale: mml-attach-file constructs a malformed composition
1225 ;; if the description string is empty. This fixes SF #625168.
1226 (mml-attach-file (format "%s%s/%d"
1227 mh-user-path
(substring folder
1) msg
)
1229 (mml-attach-file (format "%s%s/%d"
1230 mh-user-path
(substring folder
1) msg
)
1233 (t (error "The message number, %s, is not a integer" msg
)))))
1235 (defun mh-mh-forward-message (&optional description folder messages
)
1236 "Add tag to forward a message.
1237 You are prompted for a content DESCRIPTION, the name of the
1238 FOLDER in which the messages to forward are located, and the
1241 See also \\[mh-mh-to-mime]."
1243 (mml-minibuffer-read-description)
1244 (mh-prompt-for-folder "Message from" mh-sent-from-folder nil
)
1245 (read-string (concat "Messages"
1246 (if (numberp mh-sent-from-msg
)
1247 (format " (default %d): "
1253 (not (string= description
""))
1254 (insert description
))
1257 (not (string= folder
""))
1258 (insert " " folder
))
1260 (not (string= messages
"")))
1261 (let ((start (point)))
1262 (insert " " messages
)
1263 (subst-char-in-region start
(point) ?
, ?
))
1264 (if (numberp mh-sent-from-msg
)
1265 (insert " " (int-to-string mh-sent-from-msg
))))
1269 (defun mh-compose-insertion (&optional inline
)
1270 "Add tag to include a file such as an image or sound.
1272 You are prompted for the filename containing the object, the
1273 media type if it cannot be determined automatically, and a
1274 content description. If you're using MH-style directives, you
1275 will also be prompted for additional attributes.
1277 The option `mh-compose-insertion' controls what type of tags are
1278 inserted. Optional argument INLINE means make it an inline
1281 (if (equal mh-compose-insertion
'mml
)
1283 (mh-mml-attach-file "inline")
1284 (mh-mml-attach-file))
1285 (call-interactively 'mh-mh-attach-file
)))
1287 (defun mh-mml-attach-file (&optional disposition
)
1288 "Add a tag to insert a MIME message part from a file.
1290 You are prompted for the filename containing the object, the
1291 media type if it cannot be determined automatically, a content
1292 description and the DISPOSITION of the attachment.
1294 This is basically `mml-attach-file' from Gnus, modified such that a prefix
1295 argument yields an \"inline\" disposition and Content-Type is determined
1297 (let* ((file (mml-minibuffer-read-file "Attach file: "))
1298 (type (mh-minibuffer-read-type file
))
1299 (description (mml-minibuffer-read-description))
1300 (dispos (or disposition
1301 (mh-mml-minibuffer-read-disposition type
))))
1302 (mml-insert-empty-tag 'part
'type type
'filename file
1303 'disposition dispos
'description description
)))
1305 (defun mh-mh-attach-file (filename type description attributes
)
1306 "Add a tag to insert a MIME message part from a file.
1307 You are prompted for the FILENAME containing the object, the
1308 media TYPE if it cannot be determined automatically, and a
1309 content DESCRIPTION. In addition, you are also prompted for
1310 additional ATTRIBUTES.
1312 See also \\[mh-mh-to-mime]."
1313 (interactive (let ((filename (mml-minibuffer-read-file "Attach file: ")))
1316 (mh-minibuffer-read-type filename
)
1317 (mml-minibuffer-read-description)
1318 (read-string "Attributes: "
1320 (file-name-nondirectory filename
)
1322 (mh-mh-compose-type filename type description attributes
))
1324 (defun mh-mh-compose-type (filename type
1325 &optional description attributes comment
)
1326 "Insert an MH-style directive to insert a file.
1327 The file specified by FILENAME is encoded as TYPE. An optional
1328 DESCRIPTION is used as the Content-Description field, optional
1329 set of ATTRIBUTES and an optional COMMENT can also be included."
1333 (insert "; " attributes
))
1335 (insert " (" comment
")"))
1338 (insert description
))
1339 (insert "] " (expand-file-name filename
))
1343 (defun mh-mh-compose-anon-ftp (host filename type description
)
1344 "Add tag to include anonymous ftp reference to a file.
1346 You can have your message initiate an \"ftp\" transfer when the
1347 recipient reads the message. You are prompted for the remote HOST
1348 and FILENAME, the media TYPE, and the content DESCRIPTION.
1350 See also \\[mh-mh-to-mime]."
1352 (read-string "Remote host: ")
1353 (read-string "Remote filename: ")
1354 (mh-minibuffer-read-type "DUMMY-FILENAME")
1355 (mml-minibuffer-read-description)))
1356 (mh-mh-compose-external-type "anon-ftp" host filename
1360 (defun mh-mh-compose-external-compressed-tar (host filename description
)
1361 "Add tag to include anonymous ftp reference to a compressed tar file.
1363 In addition to retrieving the file via anonymous \"ftp\" as per
1364 the command \\[mh-mh-compose-anon-ftp], the file will also be
1365 uncompressed and untarred. You are prompted for the remote HOST
1366 and FILENAME and the content DESCRIPTION.
1368 See also \\[mh-mh-to-mime]."
1370 (read-string "Remote host: ")
1371 (read-string "Remote filename: ")
1372 (mml-minibuffer-read-description)))
1373 (mh-mh-compose-external-type "anon-ftp" host filename
1374 "application/octet-stream"
1376 "type=tar; conversions=x-compress"
1379 ;; RFC 2045 - Multipurpose Internet Mail Extensions (MIME) Part One:
1380 ;; Format of Internet Message Bodies.
1381 ;; RFC 2046 - Multipurpose Internet Mail Extensions (MIME) Part Two:
1383 ;; RFC 2049 - Multipurpose Internet Mail Extensions (MIME) Part Five:
1384 ;; Conformance Criteria and Examples.
1385 ;; RFC 2017 - Definition of the URL MIME External-Body Access-Type
1386 ;; RFC 1738 - Uniform Resource Locators (URL)
1387 (defvar mh-access-types
1388 '(("anon-ftp") ; RFC2046 Anonymous File Transfer Protocol
1389 ("file") ; RFC1738 Host-specific file names
1390 ("ftp") ; RFC2046 File Transfer Protocol
1391 ("gopher") ; RFC1738 The Gopher Protocol
1392 ("http") ; RFC1738 Hypertext Transfer Protocol
1393 ("local-file") ; RFC2046 Local file access
1394 ("mail-server") ; RFC2046 mail-server Electronic mail address
1395 ("mailto") ; RFC1738 Electronic mail address
1396 ("news") ; RFC1738 Usenet news
1397 ("nntp") ; RFC1738 Usenet news using NNTP access
1398 ("propspero") ; RFC1738 Prospero Directory Service
1399 ("telnet") ; RFC1738 Telnet
1400 ("tftp") ; RFC2046 Trivial File Transfer Protocol
1401 ("url") ; RFC2017 URL scheme MIME access-type Protocol
1402 ("wais")) ; RFC1738 Wide Area Information Servers
1403 "Valid MIME access-type values.")
1406 (defun mh-mh-compose-external-type (access-type host filename type
1407 &optional description
1408 attributes parameters
1410 "Add tag to refer to a remote file.
1412 This command is a general utility for referencing external files.
1413 In fact, all of the other commands that insert directives to
1414 access external files call this command. You are prompted for the
1415 ACCESS-TYPE, remote HOST and FILENAME, and content TYPE. If you
1416 provide a prefix argument, you are also prompted for a content
1417 DESCRIPTION, ATTRIBUTES, PARAMETERS, and a COMMENT.
1419 See also \\[mh-mh-to-mime]."
1421 (completing-read "Access type: " mh-access-types
)
1422 (read-string "Remote host: ")
1423 (read-string "Remote filename: ")
1424 (mh-minibuffer-read-type "DUMMY-FILENAME")
1425 (if current-prefix-arg
(mml-minibuffer-read-description))
1426 (if current-prefix-arg
(read-string "Attributes: "))
1427 (if current-prefix-arg
(read-string "Parameters: "))
1428 (if current-prefix-arg
(read-string "Comment: "))))
1432 (insert "; " attributes
))
1434 (insert " (" comment
") "))
1437 (insert description
))
1439 (insert "access-type=" access-type
"; ")
1440 (insert "site=" host
)
1441 (insert "; name=" (file-name-nondirectory filename
))
1442 (let ((directory (file-name-directory filename
)))
1444 (insert "; directory=\"" directory
"\"")))
1446 (insert "; " parameters
))
1449 (defvar mh-mh-to-mime-args nil
1450 "Extra arguments for \\[mh-mh-to-mime] to pass to the \"mhbuild\" command.
1451 The arguments are passed to \"mhbuild\" if \\[mh-mh-to-mime] is
1452 given a prefix argument. Normally default arguments to
1453 \"mhbuild\" are specified in the MH profile.")
1456 (defun mh-mh-to-mime (&optional extra-args
)
1457 "Compose MIME message from MH-style directives.
1459 Typically, you send a message with attachments just like any other
1460 message. However, you may take a sneak preview of the MIME encoding if
1461 you wish by running this command.
1463 If you wish to pass additional arguments to \"mhbuild\" (\"mhn\")
1464 to affect how it builds your message, use the option
1465 `mh-mh-to-mime-args'. For example, you can build a consistency
1466 check into the message by setting `mh-mh-to-mime-args' to
1467 \"-check\". The recipient of your message can then run \"mhbuild
1468 -check\" on the message--\"mhbuild\" (\"mhn\") will complain if
1469 the message has been corrupted on the way. This command only
1470 consults this option when given a prefix argument EXTRA-ARGS.
1472 The hook `mh-mh-to-mime-hook' is called after the message has been
1475 The effects of this command can be undone by running
1476 \\[mh-mh-to-mime-undo]."
1478 (mh-mh-quote-unescaped-sharp)
1480 (message "Running %s..." (if (mh-variant-p 'nmh
) "mhbuild" "mhn"))
1482 ((mh-variant-p 'nmh
)
1483 (mh-exec-cmd-error nil
1485 (if extra-args mh-mh-to-mime-args
)
1488 (mh-exec-cmd-error (format "mhdraft=%s" buffer-file-name
)
1490 (if extra-args mh-mh-to-mime-args
)
1493 (message "Running %s...done" (if (mh-variant-p 'nmh
) "mhbuild" "mhn"))
1494 (run-hooks 'mh-mh-to-mime-hook
))
1496 (defun mh-mh-quote-unescaped-sharp ()
1497 "Quote \"#\" characters that haven't been quoted for \"mhbuild\".
1498 If the \"#\" character is present in the first column, but it isn't
1499 part of a MH-style directive then \"mhbuild\" gives an error.
1500 This function will quote all such characters."
1502 (goto-char (point-min))
1503 (while (re-search-forward "^#" nil t
)
1505 (unless (mh-mh-directive-present-p (point) (mh-line-end-position))
1507 (goto-char (mh-line-end-position)))))
1510 (defun mh-mh-to-mime-undo (noconfirm)
1511 "Undo effects of \\[mh-mh-to-mime].
1513 It does this by reverting to a backup file. You are prompted to
1514 confirm this action, but you can avoid the confirmation by adding
1515 a prefix argument NOCONFIRM."
1517 (if (null buffer-file-name
)
1518 (error "Buffer does not seem to be associated with any file"))
1519 (let ((backup-strings '("," "#"))
1521 (while (and backup-strings
1524 (concat (file-name-directory buffer-file-name
)
1525 (car backup-strings
)
1526 (file-name-nondirectory buffer-file-name
)
1528 (setq backup-strings
(cdr backup-strings
)))
1530 (error "Backup file for %s no longer exists" buffer-file-name
))
1532 (yes-or-no-p (format "Revert buffer from file %s? "
1534 (error "Revert not confirmed"))
1535 (let ((buffer-read-only nil
))
1537 (insert-file-contents backup-file
))
1538 (after-find-file nil
)))
1541 (defvar mh-identity-pgg-default-user-id
)
1544 (defun mh-mml-secure-message-encrypt (method)
1545 "Add tag to encrypt the message.
1547 A proper multipart message is created for you when you send the
1548 message. Use the command \\[mh-mml-unsecure-message] to remove
1549 this tag. Use a prefix argument METHOD to be prompted for one of
1550 the possible security methods (see `mh-mml-method-default')."
1551 (interactive (list (mh-mml-query-cryptographic-method)))
1552 (mh-secure-message method
"encrypt" mh-identity-pgg-default-user-id
))
1555 (defun mh-mml-secure-message-sign (method)
1556 "Add tag to sign the message.
1558 A proper multipart message is created for you when you send the
1559 message. Use the command \\[mh-mml-unsecure-message] to remove
1560 this tag. Use a prefix argument METHOD to be prompted for one of
1561 the possible security methods (see `mh-mml-method-default')."
1562 (interactive (list (mh-mml-query-cryptographic-method)))
1563 (mh-secure-message method
"sign" mh-identity-pgg-default-user-id
))
1566 (defun mh-mml-secure-message-signencrypt (method)
1567 "Add tag to encrypt and sign the message.
1569 A proper multipart message is created for you when you send the
1570 message. Use the command \\[mh-mml-unsecure-message] to remove
1571 this tag. Use a prefix argument METHOD to be prompted for one of
1572 the possible security methods (see `mh-mml-method-default')."
1573 (interactive (list (mh-mml-query-cryptographic-method)))
1574 (mh-secure-message method
"signencrypt" mh-identity-pgg-default-user-id
))
1576 (defvar mh-mml-cryptographic-method-history
())
1578 (defun mh-mml-query-cryptographic-method ()
1579 "Read the cryptographic method to use."
1580 (if current-prefix-arg
1581 (let ((def (or (car mh-mml-cryptographic-method-history
)
1582 mh-mml-method-default
)))
1583 (completing-read (format "Method (default %s): " def
)
1584 '(("pgp") ("pgpmime") ("smime"))
1585 nil t nil
'mh-mml-cryptographic-method-history def
))
1586 mh-mml-method-default
))
1588 (defun mh-secure-message (method mode
&optional identity
)
1589 "Add tag to encrypt or sign message.
1591 METHOD should be one of: \"pgpmime\", \"pgp\", \"smime\".
1592 MODE should be one of: \"sign\", \"encrypt\", \"signencrypt\", \"none\".
1593 IDENTITY is optionally the default-user-id to use."
1594 (if (not mh-pgp-support-flag
)
1595 (error "Your version of Gnus does not support PGP/GPG")
1596 ;; Check the arguments
1597 (let ((valid-methods (list "pgpmime" "pgp" "smime"))
1598 (valid-modes (list "sign" "encrypt" "signencrypt" "none")))
1599 (if (not (member method valid-methods
))
1600 (error "Method %s is invalid" method
))
1601 (if (not (member mode valid-modes
))
1602 (error "Mode %s is invalid" mode
))
1603 (mml-unsecure-message)
1604 (if (not (string= mode
"none"))
1606 (goto-char (point-min))
1607 (mh-goto-header-end 1)
1608 (if mh-identity-pgg-default-user-id
1609 (mml-insert-tag 'secure
'method method
'mode mode
1610 'sender mh-identity-pgg-default-user-id
)
1611 (mml-insert-tag 'secure
'method method
'mode mode
)))))))
1614 (defun mh-mml-to-mime ()
1615 "Compose MIME message from MML tags.
1617 Typically, you send a message with attachments just like any
1618 other message. However, you may take a sneak preview of the MIME
1619 encoding if you wish by running this command.
1621 This action can be undone by running \\[undo]."
1624 (when mh-pgp-support-flag
;; This is only needed for PGP
1625 (message-options-set-recipient))
1626 (let ((saved-text (buffer-string))
1627 (buffer (current-buffer))
1628 (modified-flag (buffer-modified-p)))
1629 (condition-case err
(mml-to-mime)
1631 (with-current-buffer buffer
1632 (delete-region (point-min) (point-max))
1634 (set-buffer-modified-p modified-flag
))
1635 (error (error-message-string err
))))))
1638 (defun mh-mml-unsecure-message ()
1639 "Remove any secure message tags."
1641 (if (not mh-pgp-support-flag
)
1642 (error "Your version of Gnus does not support PGP/GPG")
1643 (mml-unsecure-message)))
1647 ;;; Support Routines for MH-Letter Commands
1650 (defun mh-mml-tag-present-p ()
1651 "Check if the current buffer has text which may be a MML tag."
1653 (goto-char (point-min))
1656 "\\(<#\\(mml\\|part\\)\\(.\\|\n\\)*>[ \n\t]*<#/\\(mml\\|part\\)>\\|"
1660 (defvar mh-media-type-regexp
1661 (concat (regexp-opt '("text" "image" "audio" "video" "application"
1662 "multipart" "message") t
)
1664 "Regexp matching valid media types used in MIME attachment compositions.")
1667 (defun mh-mh-directive-present-p (&optional begin end
)
1668 "Check if the text between BEGIN and END might be a MH-style directive.
1669 The optional argument BEGIN defaults to the beginning of the
1670 buffer, while END defaults to the the end of the buffer."
1671 (unless begin
(setq begin
(point-min)))
1672 (unless end
(setq end
(point-max)))
1674 (block 'search-for-mh-directive
1676 (while (re-search-forward "^#" end t
)
1677 (let ((s (buffer-substring-no-properties
1678 (point) (mh-line-end-position))))
1679 (cond ((equal s
""))
1680 ((string-match "^forw[ \t\n]+" s
)
1681 (return-from 'search-for-mh-directive t
))
1682 (t (let ((first-token (car (split-string s
"[ \t;@]"))))
1683 (when (and first-token
1684 (string-match mh-media-type-regexp
1686 (return-from 'search-for-mh-directive t
)))))))
1689 (defun mh-minibuffer-read-type (filename &optional default
)
1690 "Return the content type associated with the given FILENAME.
1691 If the \"file\" command exists and recognizes the given file,
1692 then its value is returned\; otherwise, the user is prompted for
1693 a type (see `mailcap-mime-types').
1694 Optional argument DEFAULT is returned if a type isn't entered."
1695 (mailcap-parse-mimetypes)
1696 (let* ((default (or default
1697 (mm-default-file-encoding filename
)
1698 "application/octet-stream"))
1699 (probed-type (mh-file-mime-type filename
))
1700 (type (or (and (not (equal probed-type
"application/octet-stream"))
1703 (format "Content type (default %s): " default
)
1704 (mapcar 'list
(mailcap-mime-types))))))
1705 (if (not (equal type
""))
1710 (defun mh-file-mime-type (filename)
1711 "Return MIME type of FILENAME from file command.
1712 Returns nil if file command not on system."
1714 ((not (mh-have-file-command))
1715 nil
) ;no file command, exit now
1716 ((not (and (file-exists-p filename
)
1717 (file-readable-p filename
)))
1718 nil
) ;no file or not readable, ditto
1721 (let ((tmp-buffer (get-buffer-create mh-temp-buffer
)))
1722 (set-buffer tmp-buffer
)
1725 (call-process "file" nil
'(t nil
) nil
"-b" "-i"
1726 (expand-file-name filename
))
1727 (goto-char (point-min))
1728 (if (not (re-search-forward mh-media-type-regexp nil t
))
1730 (mh-file-mime-type-substitute (match-string 0) filename
)))
1731 (kill-buffer tmp-buffer
)))))))
1733 (defvar mh-file-mime-type-substitutions
1734 '(("application/msword" "\.xls" "application/ms-excel")
1735 ("application/msword" "\.ppt" "application/ms-powerpoint")
1736 ("text/plain" "\.vcf" "text/x-vcard")
1737 ("text/rtf" "\.rtf" "application/rtf")
1738 ("application/x-zip" "\.sxc" "application/vnd.sun.xml.calc")
1739 ("application/x-zip" "\.sxd" "application/vnd.sun.xml.draw")
1740 ("application/x-zip" "\.sxi" "application/vnd.sun.xml.impress")
1741 ("application/x-zip" "\.sxw" "application/vnd.sun.xml.writer")
1742 ("application/x-zip" "\.odg" "application/vnd.oasis.opendocument.graphics")
1743 ("application/x-zip" "\.odi" "application/vnd.oasis.opendocument.image")
1744 ("application/x-zip" "\.odp"
1745 "application/vnd.oasis.opendocument.presentation")
1746 ("application/x-zip" "\.ods"
1747 "application/vnd.oasis.opendocument.spreadsheet")
1748 ("application/x-zip" "\.odt" "application/vnd.oasis.opendocument.text"))
1749 "Substitutions to make for Content-Type returned from file command.
1750 The first element is the Content-Type returned by the file command.
1751 The second element is a regexp matching the file name, usually the
1753 The third element is the Content-Type to replace with.")
1755 (defun mh-file-mime-type-substitute (content-type filename
)
1756 "Return possibly changed CONTENT-TYPE on the FILENAME.
1757 Substitutions are made from the `mh-file-mime-type-substitutions'
1759 (let ((subst mh-file-mime-type-substitutions
)
1760 (type) (match) (answer content-type
)
1761 (case-fold-search t
))
1763 (setq type
(car (car subst
))
1764 match
(elt (car subst
) 1))
1765 (if (and (string-equal content-type type
)
1766 (string-match match filename
))
1767 (setq answer
(elt (car subst
) 2)
1769 (setq subst
(cdr subst
))))
1772 (defvar mh-have-file-command
'undefined
1773 "Cached value of function `mh-have-file-command'.
1774 Do not reference this variable directly as it might not have been
1775 initialized. Always use the command `mh-have-file-command'.")
1778 (defun mh-have-file-command ()
1779 "Return t if 'file' command is on the system.
1780 'file -i' is used to get MIME type of composition insertion."
1781 (when (eq mh-have-file-command
'undefined
)
1782 (setq mh-have-file-command
1783 (and (fboundp 'executable-find
)
1784 (executable-find "file") ; file command exists
1785 ; and accepts -i and -b args.
1786 (zerop (call-process "file" nil nil nil
"-i" "-b"
1787 (expand-file-name "inc" mh-progs
))))))
1788 mh-have-file-command
)
1795 (defun mh-mime-cleanup ()
1796 "Free the decoded MIME parts."
1797 (let ((mime-data (gethash (current-buffer) mh-globals-hash
)))
1798 ;; This is for Emacs, what about XEmacs?
1799 (mh-funcall-if-exists remove-images
(point-min) (point-max))
1801 (mh-mm-destroy-parts (mh-mime-handles mime-data
))
1802 (remhash (current-buffer) mh-globals-hash
))))
1805 (defun mh-destroy-postponed-handles ()
1806 "Free MIME data for externally displayed MIME parts."
1807 (let ((mime-data (mh-buffer-data)))
1809 (mh-mm-destroy-parts (mh-mime-handles mime-data
)))
1810 (remhash (current-buffer) mh-globals-hash
)))
1815 ;; indent-tabs-mode: nil
1816 ;; sentence-end-double-space: nil
1819 ;; arch-tag: 0dd36518-1b64-4a84-8f4e-59f422d3f002
1820 ;;; mh-mime.el ends here