Cygwin emacsclient handles w32 file names
[emacs.git] / lisp / gnus / mm-view.el
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1 ;;; mm-view.el --- functions for viewing MIME objects
3 ;; Copyright (C) 1998-2015 Free Software Foundation, Inc.
5 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
6 ;; This file is part of GNU Emacs.
8 ;; GNU Emacs is free software: you can redistribute it and/or modify
9 ;; it under the terms of the GNU General Public License as published by
10 ;; the Free Software Foundation, either version 3 of the License, or
11 ;; (at your option) any later version.
13 ;; GNU Emacs is distributed in the hope that it will be useful,
14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 ;; GNU General Public License for more details.
18 ;; You should have received a copy of the GNU General Public License
19 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
21 ;;; Commentary:
23 ;;; Code:
25 (eval-when-compile (require 'cl))
26 (require 'mail-parse)
27 (require 'mailcap)
28 (require 'mm-bodies)
29 (require 'mm-decode)
30 (require 'smime)
31 (require 'mml-smime)
33 (autoload 'gnus-completing-read "gnus-util")
34 (autoload 'gnus-window-inside-pixel-edges "gnus-ems")
35 (autoload 'gnus-article-prepare-display "gnus-art")
36 (autoload 'vcard-parse-string "vcard")
37 (autoload 'vcard-format-string "vcard")
38 (autoload 'fill-flowed "flow-fill")
39 (autoload 'html2text "html2text" nil t)
41 (defvar gnus-article-mime-handles)
42 (defvar gnus-newsgroup-charset)
43 (defvar smime-keys)
44 (defvar w3m-cid-retrieve-function-alist)
45 (defvar w3m-current-buffer)
46 (defvar w3m-display-inline-images)
47 (defvar w3m-minor-mode-map)
49 (defvar mm-text-html-renderer-alist
50 '((shr . mm-shr)
51 (w3m . mm-inline-text-html-render-with-w3m)
52 (w3m-standalone . mm-inline-text-html-render-with-w3m-standalone)
53 (gnus-w3m . gnus-article-html)
54 (links mm-inline-render-with-file
55 mm-links-remove-leading-blank
56 "links" "-dump" file)
57 (lynx mm-inline-render-with-stdin nil
58 "lynx" "-dump" "-force_html" "-stdin" "-nolist")
59 (html2text mm-inline-render-with-function html2text))
60 "The attributes of renderer types for text/html.")
62 (defcustom mm-fill-flowed t
63 "If non-nil a format=flowed article will be displayed flowed."
64 :type 'boolean
65 :version "22.1"
66 :group 'mime-display)
68 (defcustom mm-inline-large-images-proportion 0.9
69 "Maximum proportion of large image resized when
70 `mm-inline-large-images' is set to resize."
71 :type 'float
72 :version "24.1"
73 :group 'mime-display)
75 ;;; Internal variables.
77 ;;;
78 ;;; Functions for displaying various formats inline
79 ;;;
81 (autoload 'gnus-rescale-image "gnus-util")
83 (defun mm-inline-image-emacs (handle)
84 (let ((b (point-marker))
85 (inhibit-read-only t))
86 (put-image
87 (let ((image (mm-get-image handle)))
88 (if (eq mm-inline-large-images 'resize)
89 (gnus-rescale-image
90 image
91 (let ((edges (gnus-window-inside-pixel-edges
92 (get-buffer-window (current-buffer)))))
93 (cons (truncate (* mm-inline-large-images-proportion
94 (- (nth 2 edges) (nth 0 edges))))
95 (truncate (* mm-inline-large-images-proportion
96 (- (nth 3 edges) (nth 1 edges)))))))
97 image))
99 (insert "\n")
100 (mm-handle-set-undisplayer
101 handle
102 `(lambda ()
103 (let ((b ,b)
104 (inhibit-read-only t))
105 (remove-images b b)
106 (delete-region b (1+ b)))))))
108 (defun mm-inline-image-xemacs (handle)
109 (when (featurep 'xemacs)
110 (insert "\n")
111 (forward-char -1)
112 (let ((annot (make-annotation (mm-get-image handle) nil 'text))
113 (inhibit-read-only t))
114 (mm-handle-set-undisplayer
115 handle
116 `(lambda ()
117 (let ((b ,(point-marker))
118 (inhibit-read-only t))
119 (delete-annotation ,annot)
120 (delete-region (1- b) b))))
121 (set-extent-property annot 'mm t)
122 (set-extent-property annot 'duplicable t))))
124 (eval-and-compile
125 (if (featurep 'xemacs)
126 (defalias 'mm-inline-image 'mm-inline-image-xemacs)
127 (defalias 'mm-inline-image 'mm-inline-image-emacs)))
129 (defvar mm-w3m-setup nil
130 "Whether gnus-article-mode has been setup to use emacs-w3m.")
132 ;; External.
133 (declare-function w3m-detect-meta-charset "ext:w3m" ())
134 (declare-function w3m-region "ext:w3m" (start end &optional url charset))
136 (defun mm-setup-w3m ()
137 "Setup gnus-article-mode to use emacs-w3m."
138 (unless mm-w3m-setup
139 (require 'w3m)
140 (unless (assq 'gnus-article-mode w3m-cid-retrieve-function-alist)
141 (push (cons 'gnus-article-mode 'mm-w3m-cid-retrieve)
142 w3m-cid-retrieve-function-alist))
143 (setq mm-w3m-setup t))
144 (setq w3m-display-inline-images mm-inline-text-html-with-images))
146 (defun mm-w3m-cid-retrieve-1 (url handle)
147 (dolist (elem handle)
148 (when (consp elem)
149 (when (equal url (mm-handle-id elem))
150 (mm-insert-part elem)
151 (throw 'found-handle (mm-handle-media-type elem)))
152 (when (and (stringp (car elem))
153 (equal "multipart" (mm-handle-media-supertype elem)))
154 (mm-w3m-cid-retrieve-1 url elem)))))
156 (defun mm-w3m-cid-retrieve (url &rest args)
157 "Insert a content pointed by URL if it has the cid: scheme."
158 (when (string-match "\\`cid:" url)
159 (or (catch 'found-handle
160 (mm-w3m-cid-retrieve-1
161 (setq url (concat "<" (substring url (match-end 0)) ">"))
162 (with-current-buffer w3m-current-buffer
163 gnus-article-mime-handles)))
164 (prog1
166 (message "Failed to find \"Content-ID: %s\"" url)))))
168 (defun mm-inline-text-html-render-with-w3m (handle)
169 "Render a text/html part using emacs-w3m."
170 (mm-setup-w3m)
171 (let ((text (mm-get-part handle))
172 (b (point))
173 (charset (or (mail-content-type-get (mm-handle-type handle) 'charset)
174 mail-parse-charset)))
175 (save-excursion
176 (insert (if charset (mm-decode-string text charset) text))
177 (save-restriction
178 (narrow-to-region b (point))
179 (unless charset
180 (goto-char (point-min))
181 (when (setq charset (w3m-detect-meta-charset))
182 (delete-region (point-min) (point-max))
183 (insert (mm-decode-string text charset))))
184 (let ((w3m-safe-url-regexp mm-w3m-safe-url-regexp)
185 w3m-force-redisplay)
186 (w3m-region (point-min) (point-max) nil charset))
187 ;; Put the mark meaning this part was rendered by emacs-w3m.
188 (put-text-property (point-min) (point-max)
189 'mm-inline-text-html-with-w3m t)
190 (when (and mm-inline-text-html-with-w3m-keymap
191 (boundp 'w3m-minor-mode-map)
192 w3m-minor-mode-map)
193 (if (and (boundp 'w3m-link-map)
194 w3m-link-map)
195 (let* ((start (point-min))
196 (end (point-max))
197 (on (get-text-property start 'w3m-href-anchor))
198 (map (copy-keymap w3m-link-map))
199 next)
200 (set-keymap-parent map w3m-minor-mode-map)
201 (while (< start end)
202 (if on
203 (progn
204 (setq next (or (text-property-any start end
205 'w3m-href-anchor nil)
206 end))
207 (put-text-property start next 'keymap map))
208 (setq next (or (text-property-not-all start end
209 'w3m-href-anchor nil)
210 end))
211 (put-text-property start next 'keymap w3m-minor-mode-map))
212 (setq start next
213 on (not on))))
214 (put-text-property (point-min) (point-max)
215 'keymap w3m-minor-mode-map)))
216 (mm-handle-set-undisplayer
217 handle
218 `(lambda ()
219 (let ((inhibit-read-only t))
220 (delete-region ,(point-min-marker)
221 ,(point-max-marker)))))))))
223 (defvar mm-w3m-standalone-supports-m17n-p (if (featurep 'mule) 'undecided)
224 "*T means the w3m command supports the m17n feature.")
226 (defun mm-w3m-standalone-supports-m17n-p ()
227 "Say whether the w3m command supports the m17n feature."
228 (cond ((eq mm-w3m-standalone-supports-m17n-p t) t)
229 ((eq mm-w3m-standalone-supports-m17n-p nil) nil)
230 ((not (featurep 'mule)) (setq mm-w3m-standalone-supports-m17n-p nil))
231 ((condition-case nil
232 (let ((coding-system-for-write 'iso-2022-jp)
233 (coding-system-for-read 'iso-2022-jp)
234 (str (mm-decode-coding-string "\
235 \e$B#D#o#e#s!!#w#3#m!!#s#u#p#p#o#r#t!!#m#1#7#n!)\e(B" 'iso-2022-jp)))
236 (mm-with-multibyte-buffer
237 (insert str)
238 (call-process-region
239 (point-min) (point-max) "w3m" t t nil "-dump"
240 "-T" "text/html" "-I" "iso-2022-jp" "-O" "iso-2022-jp")
241 (goto-char (point-min))
242 (search-forward str nil t)))
243 (error nil))
244 (setq mm-w3m-standalone-supports-m17n-p t))
246 ;;(message "You had better upgrade your w3m command")
247 (setq mm-w3m-standalone-supports-m17n-p nil))))
249 (defun mm-inline-text-html-render-with-w3m-standalone (handle)
250 "Render a text/html part using w3m."
251 (if (mm-w3m-standalone-supports-m17n-p)
252 (let ((source (mm-get-part handle))
253 (charset (or (mail-content-type-get (mm-handle-type handle)
254 'charset)
255 (symbol-name mail-parse-charset)))
257 (if (and charset
258 (setq cs (mm-charset-to-coding-system charset nil t))
259 (not (eq cs 'ascii)))
260 (setq charset (format "%s" (mm-coding-system-to-mime-charset cs)))
261 ;; The default.
262 (setq charset "iso-8859-1"
263 cs 'iso-8859-1))
264 (mm-insert-inline
265 handle
266 (mm-with-unibyte-buffer
267 (insert source)
268 (mm-enable-multibyte)
269 (let ((coding-system-for-write 'binary)
270 (coding-system-for-read cs))
271 (call-process-region
272 (point-min) (point-max)
273 "w3m" t t nil "-dump" "-T" "text/html"
274 "-I" charset "-O" charset))
275 (buffer-string))))
276 (mm-inline-render-with-stdin handle nil "w3m" "-dump" "-T" "text/html")))
278 (defun mm-links-remove-leading-blank ()
279 ;; Delete the annoying three spaces preceding each line of links
280 ;; output.
281 (goto-char (point-min))
282 (while (re-search-forward "^ " nil t)
283 (delete-region (match-beginning 0) (match-end 0))))
285 (defun mm-inline-wash-with-file (post-func cmd &rest args)
286 (let ((file (mm-make-temp-file
287 (expand-file-name "mm" mm-tmp-directory))))
288 (let ((coding-system-for-write 'binary))
289 (write-region (point-min) (point-max) file nil 'silent))
290 (delete-region (point-min) (point-max))
291 (unwind-protect
292 (apply 'call-process cmd nil t nil (mapcar 'eval args))
293 (delete-file file))
294 (and post-func (funcall post-func))))
296 (defun mm-inline-wash-with-stdin (post-func cmd &rest args)
297 (let ((coding-system-for-write 'binary))
298 (apply 'call-process-region (point-min) (point-max)
299 cmd t t nil args))
300 (and post-func (funcall post-func)))
302 (defun mm-inline-render-with-file (handle post-func cmd &rest args)
303 (let ((source (mm-get-part handle)))
304 (mm-insert-inline
305 handle
306 (mm-with-unibyte-buffer
307 (insert source)
308 (apply 'mm-inline-wash-with-file post-func cmd args)
309 (buffer-string)))))
311 (defun mm-inline-render-with-stdin (handle post-func cmd &rest args)
312 (let ((source (mm-get-part handle)))
313 (mm-insert-inline
314 handle
315 (mm-with-unibyte-buffer
316 (insert source)
317 (apply 'mm-inline-wash-with-stdin post-func cmd args)
318 (buffer-string)))))
320 (defun mm-inline-render-with-function (handle func &rest args)
321 (let ((source (mm-get-part handle))
322 (charset (or (mail-content-type-get (mm-handle-type handle) 'charset)
323 mail-parse-charset)))
324 (mm-insert-inline
325 handle
326 (mm-with-multibyte-buffer
327 (insert (if charset
328 (mm-decode-string source charset)
329 source))
330 (apply func args)
331 (buffer-string)))))
333 (defun mm-inline-text-html (handle)
334 (if (stringp (car handle))
335 (mapcar 'mm-inline-text-html (cdr handle))
336 (let* ((func mm-text-html-renderer)
337 (entry (assq func mm-text-html-renderer-alist))
338 (inhibit-read-only t))
339 (if entry
340 (setq func (cdr entry)))
341 (cond
342 ((functionp func)
343 (funcall func handle))
345 (apply (car func) handle (cdr func)))))))
347 (defun mm-inline-text-vcard (handle)
348 (let ((inhibit-read-only t))
349 (mm-insert-inline
350 handle
351 (concat "\n-- \n"
352 (ignore-errors
353 (if (fboundp 'vcard-pretty-print)
354 (vcard-pretty-print (mm-get-part handle))
355 (vcard-format-string
356 (vcard-parse-string (mm-get-part handle)
357 'vcard-standard-filter))))))))
359 (defun mm-inline-text (handle)
360 (let ((b (point))
361 (type (mm-handle-media-subtype handle))
362 (charset (mail-content-type-get
363 (mm-handle-type handle) 'charset))
364 (inhibit-read-only t))
365 (if (or (eq charset 'gnus-decoded)
366 ;; This is probably not entirely correct, but
367 ;; makes rfc822 parts with embedded multiparts work.
368 (eq mail-parse-charset 'gnus-decoded))
369 (save-restriction
370 (narrow-to-region (point) (point))
371 (mm-insert-part handle)
372 (goto-char (point-max)))
373 (mm-display-inline-fontify handle))
374 (when (and mm-fill-flowed
375 (equal type "plain")
376 (equal (cdr (assoc 'format (mm-handle-type handle)))
377 "flowed"))
378 (save-restriction
379 (narrow-to-region b (point))
380 (goto-char b)
381 (fill-flowed nil (equal (cdr (assoc 'delsp (mm-handle-type handle)))
382 "yes"))
383 (goto-char (point-max))))
384 (save-restriction
385 (narrow-to-region b (point))
386 (when (member type '("enriched" "richtext"))
387 (set-text-properties (point-min) (point-max) nil)
388 (ignore-errors
389 (enriched-decode (point-min) (point-max))))
390 (mm-handle-set-undisplayer
391 handle
392 `(lambda ()
393 (let ((inhibit-read-only t))
394 (delete-region ,(copy-marker (point-min) t)
395 ,(point-max-marker))))))))
397 (defun mm-insert-inline (handle text)
398 "Insert TEXT inline from HANDLE."
399 (let ((b (point)))
400 (insert text)
401 (unless (bolp)
402 (insert "\n"))
403 (mm-handle-set-undisplayer
404 handle
405 `(lambda ()
406 (let ((inhibit-read-only t))
407 (delete-region ,(copy-marker b t)
408 ,(point-marker)))))))
410 (defun mm-inline-audio (handle)
411 (message "Not implemented"))
413 (defun mm-view-message ()
414 (mm-enable-multibyte)
415 (let (handles)
416 (let (gnus-article-mime-handles)
417 ;; Double decode problem may happen. See mm-inline-message.
418 (run-hooks 'gnus-article-decode-hook)
419 (gnus-article-prepare-display)
420 (setq handles gnus-article-mime-handles))
421 (when handles
422 (setq gnus-article-mime-handles
423 (mm-merge-handles gnus-article-mime-handles handles))))
424 (fundamental-mode)
425 (goto-char (point-min)))
427 (defun mm-inline-message (handle)
428 (let ((b (point))
429 (bolp (bolp))
430 (charset (mail-content-type-get
431 (mm-handle-type handle) 'charset))
432 gnus-displaying-mime handles)
433 (when (and charset
434 (stringp charset))
435 (setq charset (intern (downcase charset)))
436 (when (eq charset 'us-ascii)
437 (setq charset nil)))
438 (save-excursion
439 (save-restriction
440 (narrow-to-region b b)
441 (mm-insert-part handle)
442 (let (gnus-article-mime-handles
443 ;; disable prepare hook
444 gnus-article-prepare-hook
445 (gnus-newsgroup-charset
446 (unless (eq charset 'gnus-decoded) ;; mm-uu might set it.
447 (or charset gnus-newsgroup-charset))))
448 (let ((gnus-original-article-buffer (mm-handle-buffer handle)))
449 (run-hooks 'gnus-article-decode-hook))
450 (gnus-article-prepare-display)
451 (setq handles gnus-article-mime-handles))
452 (goto-char (point-min))
453 (unless bolp
454 (insert "\n"))
455 (goto-char (point-max))
456 (unless (bolp)
457 (insert "\n"))
458 (insert "----------\n\n")
459 (when handles
460 (setq gnus-article-mime-handles
461 (mm-merge-handles gnus-article-mime-handles handles)))
462 (mm-handle-set-undisplayer
463 handle
464 `(lambda ()
465 (let ((inhibit-read-only t))
466 (if (fboundp 'remove-specifier)
467 ;; This is only valid on XEmacs.
468 (dolist (prop '(background background-pixmap foreground))
469 (remove-specifier
470 (face-property 'default prop) (current-buffer))))
471 (delete-region ,(point-min-marker) ,(point-max-marker)))))))))
473 ;; Shut up byte-compiler.
474 (defvar font-lock-mode-hook)
475 (defun mm-display-inline-fontify (handle &optional mode)
476 "Insert HANDLE inline fontifying with MODE.
477 If MODE is not set, try to find mode automatically."
478 (let ((charset (mail-content-type-get (mm-handle-type handle) 'charset))
479 text coding-system)
480 (unless (eq charset 'gnus-decoded)
481 (mm-with-unibyte-buffer
482 (mm-insert-part handle)
483 (mm-decompress-buffer
484 (mm-handle-filename handle)
485 t t)
486 (unless charset
487 (setq coding-system (mm-find-buffer-file-coding-system)))
488 (setq text (buffer-string))))
489 ;; XEmacs @#$@ version of font-lock refuses to fully turn itself
490 ;; on for buffers whose name begins with " ". That's why we use
491 ;; `with-current-buffer'/`generate-new-buffer' rather than
492 ;; `with-temp-buffer'.
493 (with-current-buffer (generate-new-buffer "*fontification*")
494 (buffer-disable-undo)
495 (mm-enable-multibyte)
496 (insert (cond ((eq charset 'gnus-decoded)
497 (with-current-buffer (mm-handle-buffer handle)
498 (buffer-string)))
499 (coding-system
500 (mm-decode-coding-string text coding-system))
501 (charset
502 (mm-decode-string text charset))
504 text)))
505 (require 'font-lock)
506 ;; I find font-lock a bit too verbose.
507 (let ((font-lock-verbose nil)
508 (font-lock-support-mode nil))
509 ;; Disable support modes, e.g., jit-lock, lazy-lock, etc.
510 ;; Note: XEmacs people use `font-lock-mode-hook' to run those modes.
511 (set (make-local-variable 'font-lock-mode-hook) nil)
512 (setq buffer-file-name (mm-handle-filename handle))
513 (set (make-local-variable 'enable-local-variables) nil)
514 (with-demoted-errors
515 (if mode
516 (save-window-excursion
517 (switch-to-buffer (current-buffer))
518 (funcall mode))
519 (let ((auto-mode-alist
520 (delq (rassq 'doc-view-mode-maybe auto-mode-alist)
521 (copy-sequence auto-mode-alist))))
522 (set-auto-mode)))
523 ;; The mode function might have already turned on font-lock.
524 ;; Do not fontify if the guess mode is fundamental.
525 (unless (or font-lock-mode
526 (eq major-mode 'fundamental-mode))
527 (if (fboundp 'font-lock-ensure)
528 (font-lock-ensure)
529 (font-lock-fontify-buffer)))))
530 ;; By default, XEmacs font-lock uses non-duplicable text
531 ;; properties. This code forces all the text properties
532 ;; to be copied along with the text.
533 (when (featurep 'xemacs)
534 (map-extents (lambda (ext ignored)
535 (set-extent-property ext 'duplicable t)
536 nil)
537 nil nil nil nil nil 'text-prop))
538 (setq text (buffer-string))
539 ;; Set buffer unmodified to avoid confirmation when killing the
540 ;; buffer.
541 (set-buffer-modified-p nil)
542 (kill-buffer (current-buffer)))
543 (mm-insert-inline handle text)))
545 ;; Shouldn't these functions check whether the user even wants to use
546 ;; font-lock? At least under XEmacs, this fontification is pretty
547 ;; much unconditional. Also, it would be nice to change for the size
548 ;; of the fontified region.
550 (defun mm-display-patch-inline (handle)
551 (mm-display-inline-fontify handle 'diff-mode))
553 (defun mm-display-elisp-inline (handle)
554 (mm-display-inline-fontify handle 'emacs-lisp-mode))
556 (defun mm-display-dns-inline (handle)
557 (mm-display-inline-fontify handle 'dns-mode))
559 (defun mm-display-org-inline (handle)
560 "Show an Org mode text from HANDLE inline."
561 (mm-display-inline-fontify handle 'org-mode))
563 (defun mm-display-shell-script-inline (handle)
564 "Show a shell script from HANDLE inline."
565 (mm-display-inline-fontify handle 'shell-script-mode))
567 (defun mm-display-javascript-inline (handle)
568 "Show JavsScript code from HANDLE inline."
569 (mm-display-inline-fontify handle 'javascript-mode))
571 ;; id-signedData OBJECT IDENTIFIER ::= { iso(1) member-body(2)
572 ;; us(840) rsadsi(113549) pkcs(1) pkcs7(7) 2 }
573 (defvar mm-pkcs7-signed-magic
574 (concat
576 "\\(\\(\x80\\)"
577 "\\|\\(\x81\\(.\\|\n\\)\\{1\\}\\)"
578 "\\|\\(\x82\\(.\\|\n\\)\\{2\\}\\)"
579 "\\|\\(\x83\\(.\\|\n\\)\\{3\\}\\)"
580 "\\)"
581 "\x06\x09\\*\x86H\x86\xf7\x0d\x01\x07\x02"))
583 ;; id-envelopedData OBJECT IDENTIFIER ::= { iso(1) member-body(2)
584 ;; us(840) rsadsi(113549) pkcs(1) pkcs7(7) 3 }
585 (defvar mm-pkcs7-enveloped-magic
586 (concat
588 "\\(\\(\x80\\)"
589 "\\|\\(\x81\\(.\\|\n\\)\\{1\\}\\)"
590 "\\|\\(\x82\\(.\\|\n\\)\\{2\\}\\)"
591 "\\|\\(\x83\\(.\\|\n\\)\\{3\\}\\)"
592 "\\)"
593 "\x06\x09\\*\x86H\x86\xf7\x0d\x01\x07\x03"))
595 (defun mm-view-pkcs7-get-type (handle)
596 (mm-with-unibyte-buffer
597 (mm-insert-part handle)
598 (cond ((looking-at mm-pkcs7-enveloped-magic)
599 'enveloped)
600 ((looking-at mm-pkcs7-signed-magic)
601 'signed)
603 (error "Could not identify PKCS#7 type")))))
605 (defun mm-view-pkcs7 (handle &optional from)
606 (case (mm-view-pkcs7-get-type handle)
607 (enveloped (mm-view-pkcs7-decrypt handle from))
608 (signed (mm-view-pkcs7-verify handle))
609 (otherwise (error "Unknown or unimplemented PKCS#7 type"))))
611 (defun mm-view-pkcs7-verify (handle)
612 (let ((verified nil))
613 (with-temp-buffer
614 (insert "MIME-Version: 1.0\n")
615 (mm-insert-headers "application/pkcs7-mime" "base64" "smime.p7m")
616 (insert-buffer-substring (mm-handle-buffer handle))
617 (setq verified (smime-verify-region (point-min) (point-max))))
618 (goto-char (point-min))
619 (mm-insert-part handle)
620 (if (search-forward "Content-Type: " nil t)
621 (delete-region (point-min) (match-beginning 0)))
622 (goto-char (point-max))
623 (if (re-search-backward "--\r?\n?" nil t)
624 (delete-region (match-end 0) (point-max)))
625 (unless verified
626 (insert-buffer-substring smime-details-buffer)))
627 (goto-char (point-min))
628 (while (search-forward "\r\n" nil t)
629 (replace-match "\n"))
632 (autoload 'epg-decrypt-string "epg")
634 (defun mm-view-pkcs7-decrypt (handle &optional from)
635 (insert-buffer-substring (mm-handle-buffer handle))
636 (goto-char (point-min))
637 (if (eq mml-smime-use 'epg)
638 ;; Use EPG/gpgsm
639 (let ((part (base64-decode-string (buffer-string))))
640 (erase-buffer)
641 (insert (epg-decrypt-string (epg-make-context 'CMS) part)))
642 ;; Use openssl
643 (insert "MIME-Version: 1.0\n")
644 (mm-insert-headers "application/pkcs7-mime" "base64" "smime.p7m")
645 (smime-decrypt-region
646 (point-min) (point-max)
647 (if (= (length smime-keys) 1)
648 (cadar smime-keys)
649 (smime-get-key-by-email
650 (gnus-completing-read
651 "Decipher using key"
652 smime-keys nil nil nil (car-safe (car-safe smime-keys)))))
653 from))
654 (goto-char (point-min))
655 (while (search-forward "\r\n" nil t)
656 (replace-match "\n"))
657 (goto-char (point-min)))
659 (provide 'mm-view)
661 ;;; mm-view.el ends here