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715a2ca2 | 1 | ;;; mm-view.el --- functions for viewing MIME objects |
e84b4b86 TTN |
2 | |
3 | ;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, | |
d7a0267c | 4 | ;; 2005, 2006, 2007 Free Software Foundation, Inc. |
c113de23 GM |
5 | |
6 | ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> | |
7 | ;; This file is part of GNU Emacs. | |
8 | ||
9 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
10 | ;; it under the terms of the GNU General Public License as published by | |
5a9dffec | 11 | ;; the Free Software Foundation; either version 3, or (at your option) |
c113de23 GM |
12 | ;; any later version. |
13 | ||
14 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
15 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | ;; GNU General Public License for more details. | |
18 | ||
19 | ;; You should have received a copy of the GNU General Public License | |
20 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
3a35cf56 LK |
21 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
22 | ;; Boston, MA 02110-1301, USA. | |
c113de23 GM |
23 | |
24 | ;;; Commentary: | |
25 | ||
26 | ;;; Code: | |
27 | ||
28 | (eval-when-compile (require 'cl)) | |
29 | (require 'mail-parse) | |
30 | (require 'mailcap) | |
31 | (require 'mm-bodies) | |
32 | (require 'mm-decode) | |
01c52d31 | 33 | (require 'smime) |
c113de23 GM |
34 | |
35 | (eval-and-compile | |
36 | (autoload 'gnus-article-prepare-display "gnus-art") | |
37 | (autoload 'vcard-parse-string "vcard") | |
38 | (autoload 'vcard-format-string "vcard") | |
39 | (autoload 'fill-flowed "flow-fill") | |
01c52d31 | 40 | (autoload 'html2text "html2text" nil t)) |
c113de23 | 41 | |
dd3eac76 JB |
42 | (defvar gnus-article-mime-handles) |
43 | (defvar gnus-newsgroup-charset) | |
44 | (defvar smime-keys) | |
45 | (defvar w3m-cid-retrieve-function-alist) | |
46 | (defvar w3m-current-buffer) | |
47 | (defvar w3m-display-inline-images) | |
48 | (defvar w3m-minor-mode-map) | |
49 | ||
23f87bed MB |
50 | (defvar mm-text-html-renderer-alist |
51 | '((w3 . mm-inline-text-html-render-with-w3) | |
52 | (w3m . mm-inline-text-html-render-with-w3m) | |
73043f7d | 53 | (w3m-standalone . mm-inline-text-html-render-with-w3m-standalone) |
23f87bed MB |
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.") | |
61 | ||
62 | (defvar mm-text-html-washer-alist | |
63 | '((w3 . gnus-article-wash-html-with-w3) | |
64 | (w3m . gnus-article-wash-html-with-w3m) | |
73043f7d | 65 | (w3m-standalone . gnus-article-wash-html-with-w3m-standalone) |
23f87bed MB |
66 | (links mm-inline-wash-with-file |
67 | mm-links-remove-leading-blank | |
68 | "links" "-dump" file) | |
69 | (lynx mm-inline-wash-with-stdin nil | |
70 | "lynx" "-dump" "-force_html" "-stdin" "-nolist") | |
71 | (html2text html2text)) | |
72 | "The attributes of washer types for text/html.") | |
73 | ||
5f4264e5 | 74 | (defcustom mm-fill-flowed t |
01c52d31 | 75 | "If non-nil a format=flowed article will be displayed flowed." |
5f4264e5 MB |
76 | :type 'boolean |
77 | :version "22.1" | |
78 | :group 'mime-display) | |
79 | ||
23f87bed MB |
80 | ;;; Internal variables. |
81 | ||
c113de23 GM |
82 | ;;; |
83 | ;;; Functions for displaying various formats inline | |
84 | ;;; | |
23f87bed | 85 | |
c113de23 GM |
86 | (defun mm-inline-image-emacs (handle) |
87 | (let ((b (point-marker)) | |
88 | buffer-read-only) | |
c113de23 | 89 | (put-image (mm-get-image handle) b) |
23f87bed | 90 | (insert "\n\n") |
c113de23 GM |
91 | (mm-handle-set-undisplayer |
92 | handle | |
23f87bed MB |
93 | `(lambda () |
94 | (let ((b ,b) | |
95 | buffer-read-only) | |
96 | (remove-images b b) | |
97 | (delete-region b (+ b 2))))))) | |
c113de23 GM |
98 | |
99 | (defun mm-inline-image-xemacs (handle) | |
23f87bed MB |
100 | (insert "\n\n") |
101 | (forward-char -2) | |
102 | (let ((annot (make-annotation (mm-get-image handle) nil 'text)) | |
c113de23 | 103 | buffer-read-only) |
c113de23 GM |
104 | (mm-handle-set-undisplayer |
105 | handle | |
106 | `(lambda () | |
23f87bed MB |
107 | (let ((b ,(point-marker)) |
108 | buffer-read-only) | |
c113de23 | 109 | (delete-annotation ,annot) |
23f87bed | 110 | (delete-region (- b 2) b)))) |
c113de23 GM |
111 | (set-extent-property annot 'mm t) |
112 | (set-extent-property annot 'duplicable t))) | |
113 | ||
114 | (eval-and-compile | |
722a8409 | 115 | (if (featurep 'xemacs) |
c113de23 GM |
116 | (defalias 'mm-inline-image 'mm-inline-image-xemacs) |
117 | (defalias 'mm-inline-image 'mm-inline-image-emacs))) | |
118 | ||
119 | (defvar mm-w3-setup nil) | |
120 | (defun mm-setup-w3 () | |
121 | (unless mm-w3-setup | |
122 | (require 'w3) | |
123 | (w3-do-setup) | |
124 | (require 'url) | |
125 | (require 'w3-vars) | |
126 | (require 'url-vars) | |
127 | (setq mm-w3-setup t))) | |
128 | ||
23f87bed MB |
129 | (defun mm-inline-text-html-render-with-w3 (handle) |
130 | (mm-setup-w3) | |
131 | (let ((text (mm-get-part handle)) | |
132 | (b (point)) | |
133 | (url-standalone-mode t) | |
134 | (url-gateway-unplugged t) | |
135 | (w3-honor-stylesheets nil) | |
136 | (url-current-object | |
137 | (url-generic-parse-url (format "cid:%s" (mm-handle-id handle)))) | |
138 | (width (window-width)) | |
139 | (charset (mail-content-type-get | |
140 | (mm-handle-type handle) 'charset))) | |
141 | (save-excursion | |
01c52d31 | 142 | (insert (if charset (mm-decode-string text charset) text)) |
23f87bed MB |
143 | (save-restriction |
144 | (narrow-to-region b (point)) | |
01c52d31 MB |
145 | (unless charset |
146 | (goto-char (point-min)) | |
147 | (when (or (and (boundp 'w3-meta-content-type-charset-regexp) | |
148 | (re-search-forward | |
149 | w3-meta-content-type-charset-regexp nil t)) | |
150 | (and (boundp 'w3-meta-charset-content-type-regexp) | |
151 | (re-search-forward | |
152 | w3-meta-charset-content-type-regexp nil t))) | |
23f87bed | 153 | (setq charset |
01c52d31 MB |
154 | (let ((bsubstr (buffer-substring-no-properties |
155 | (match-beginning 2) | |
156 | (match-end 2)))) | |
157 | (if (fboundp 'w3-coding-system-for-mime-charset) | |
158 | (w3-coding-system-for-mime-charset bsubstr) | |
159 | (mm-charset-to-coding-system bsubstr)))) | |
160 | (delete-region (point-min) (point-max)) | |
161 | (insert (mm-decode-string text charset)))) | |
23f87bed | 162 | (save-window-excursion |
c113de23 | 163 | (save-restriction |
23f87bed MB |
164 | (let ((w3-strict-width width) |
165 | ;; Don't let w3 set the global version of | |
166 | ;; this variable. | |
167 | (fill-column fill-column)) | |
168 | (if (or debug-on-error debug-on-quit) | |
169 | (w3-region (point-min) (point-max)) | |
170 | (condition-case () | |
171 | (w3-region (point-min) (point-max)) | |
172 | (error | |
173 | (delete-region (point-min) (point-max)) | |
174 | (let ((b (point)) | |
175 | (charset (mail-content-type-get | |
176 | (mm-handle-type handle) 'charset))) | |
177 | (if (or (eq charset 'gnus-decoded) | |
178 | (eq mail-parse-charset 'gnus-decoded)) | |
179 | (save-restriction | |
180 | (narrow-to-region (point) (point)) | |
181 | (mm-insert-part handle) | |
182 | (goto-char (point-max))) | |
183 | (insert (mm-decode-string (mm-get-part handle) | |
184 | charset)))) | |
185 | (message | |
186 | "Error while rendering html; showing as text/plain"))))))) | |
187 | (mm-handle-set-undisplayer | |
188 | handle | |
189 | `(lambda () | |
190 | (let (buffer-read-only) | |
01c52d31 MB |
191 | ,@(if (functionp 'remove-specifier) |
192 | '((mapcar (lambda (prop) | |
193 | (remove-specifier | |
194 | (face-property 'default prop) | |
195 | (current-buffer))) | |
196 | '(background background-pixmap foreground)))) | |
23f87bed MB |
197 | (delete-region ,(point-min-marker) |
198 | ,(point-max-marker))))))))) | |
199 | ||
200 | (defvar mm-w3m-setup nil | |
201 | "Whether gnus-article-mode has been setup to use emacs-w3m.") | |
202 | ||
203 | (defun mm-setup-w3m () | |
204 | "Setup gnus-article-mode to use emacs-w3m." | |
205 | (unless mm-w3m-setup | |
206 | (require 'w3m) | |
207 | (unless (assq 'gnus-article-mode w3m-cid-retrieve-function-alist) | |
208 | (push (cons 'gnus-article-mode 'mm-w3m-cid-retrieve) | |
209 | w3m-cid-retrieve-function-alist)) | |
210 | (setq mm-w3m-setup t)) | |
211 | (setq w3m-display-inline-images mm-inline-text-html-with-images)) | |
212 | ||
213 | (defun mm-w3m-cid-retrieve-1 (url handle) | |
54506618 | 214 | (dolist (elem handle) |
fe62aacc MB |
215 | (when (consp elem) |
216 | (when (equal url (mm-handle-id elem)) | |
217 | (mm-insert-part elem) | |
218 | (throw 'found-handle (mm-handle-media-type elem))) | |
219 | (when (and (stringp (car elem)) | |
220 | (equal "multipart" (mm-handle-media-supertype elem))) | |
221 | (mm-w3m-cid-retrieve-1 url elem))))) | |
23f87bed MB |
222 | |
223 | (defun mm-w3m-cid-retrieve (url &rest args) | |
224 | "Insert a content pointed by URL if it has the cid: scheme." | |
225 | (when (string-match "\\`cid:" url) | |
fe62aacc MB |
226 | (or (catch 'found-handle |
227 | (mm-w3m-cid-retrieve-1 | |
228 | (setq url (concat "<" (substring url (match-end 0)) ">")) | |
229 | (with-current-buffer w3m-current-buffer | |
230 | gnus-article-mime-handles))) | |
231 | (prog1 | |
232 | nil | |
233 | (message "Failed to find \"Content-ID: %s\"" url))))) | |
23f87bed MB |
234 | |
235 | (defun mm-inline-text-html-render-with-w3m (handle) | |
236 | "Render a text/html part using emacs-w3m." | |
237 | (mm-setup-w3m) | |
238 | (let ((text (mm-get-part handle)) | |
239 | (b (point)) | |
6b554e88 MB |
240 | (charset (or (mail-content-type-get (mm-handle-type handle) 'charset) |
241 | mail-parse-charset))) | |
23f87bed MB |
242 | (save-excursion |
243 | (insert (if charset (mm-decode-string text charset) text)) | |
244 | (save-restriction | |
245 | (narrow-to-region b (point)) | |
246 | (unless charset | |
247 | (goto-char (point-min)) | |
248 | (when (setq charset (w3m-detect-meta-charset)) | |
c113de23 | 249 | (delete-region (point-min) (point-max)) |
23f87bed MB |
250 | (insert (mm-decode-string text charset)))) |
251 | (let ((w3m-safe-url-regexp mm-w3m-safe-url-regexp) | |
252 | w3m-force-redisplay) | |
253 | (w3m-region (point-min) (point-max) nil charset)) | |
254 | (when (and mm-inline-text-html-with-w3m-keymap | |
255 | (boundp 'w3m-minor-mode-map) | |
256 | w3m-minor-mode-map) | |
257 | (add-text-properties | |
258 | (point-min) (point-max) | |
259 | (list 'keymap w3m-minor-mode-map | |
260 | ;; Put the mark meaning this part was rendered by emacs-w3m. | |
58090a8d MB |
261 | 'mm-inline-text-html-with-w3m t))) |
262 | (mm-handle-set-undisplayer | |
263 | handle | |
264 | `(lambda () | |
01c52d31 | 265 | (let ((inhibit-read-only t)) |
58090a8d MB |
266 | (delete-region ,(point-min-marker) |
267 | ,(point-max-marker))))))))) | |
23f87bed | 268 | |
7347faa8 MB |
269 | (defvar mm-w3m-standalone-supports-m17n-p (if (featurep 'mule) 'undecided) |
270 | "*T means the w3m command supports the m17n feature.") | |
271 | ||
272 | (defun mm-w3m-standalone-supports-m17n-p () | |
273 | "Say whether the w3m command supports the m17n feature." | |
274 | (cond ((eq mm-w3m-standalone-supports-m17n-p t) t) | |
275 | ((eq mm-w3m-standalone-supports-m17n-p nil) nil) | |
276 | ((not (featurep 'mule)) (setq mm-w3m-standalone-supports-m17n-p nil)) | |
277 | ((condition-case nil | |
278 | (let ((coding-system-for-write 'iso-2022-jp) | |
279 | (coding-system-for-read 'iso-2022-jp) | |
280 | (str (mm-decode-coding-string "\ | |
281 | \e$B#D#o#e#s!!#w#3#m!!#s#u#p#p#o#r#t#s!!#m#1#7#n!)\e(B" 'iso-2022-jp))) | |
282 | (mm-with-multibyte-buffer | |
283 | (insert str) | |
284 | (call-process-region | |
285 | (point-min) (point-max) "w3m" t t nil "-dump" | |
286 | "-T" "text/html" "-I" "iso-2022-jp" "-O" "iso-2022-jp") | |
287 | (goto-char (point-min)) | |
288 | (search-forward str nil t))) | |
289 | (error nil)) | |
290 | (setq mm-w3m-standalone-supports-m17n-p t)) | |
291 | (t | |
292 | ;;(message "You had better upgrade your w3m command") | |
293 | (setq mm-w3m-standalone-supports-m17n-p nil)))) | |
294 | ||
73043f7d MB |
295 | (defun mm-inline-text-html-render-with-w3m-standalone (handle) |
296 | "Render a text/html part using w3m." | |
7347faa8 MB |
297 | (if (mm-w3m-standalone-supports-m17n-p) |
298 | (let ((source (mm-get-part handle)) | |
6b554e88 MB |
299 | (charset (or (mail-content-type-get (mm-handle-type handle) |
300 | 'charset) | |
301 | (symbol-name mail-parse-charset))) | |
7347faa8 MB |
302 | cs) |
303 | (unless (and charset | |
304 | (setq cs (mm-charset-to-coding-system charset)) | |
305 | (not (eq cs 'ascii))) | |
306 | ;; The default. | |
307 | (setq charset "iso-8859-1" | |
308 | cs 'iso-8859-1)) | |
309 | (mm-insert-inline | |
310 | handle | |
311 | (mm-with-unibyte-buffer | |
312 | (insert source) | |
313 | (mm-enable-multibyte) | |
314 | (let ((coding-system-for-write 'binary) | |
315 | (coding-system-for-read cs)) | |
316 | (call-process-region | |
317 | (point-min) (point-max) | |
318 | "w3m" t t nil "-dump" "-T" "text/html" | |
319 | "-I" charset "-O" charset)) | |
320 | (buffer-string)))) | |
321 | (mm-inline-render-with-stdin handle nil "w3m" "-dump" "-T" "text/html"))) | |
73043f7d | 322 | |
23f87bed MB |
323 | (defun mm-links-remove-leading-blank () |
324 | ;; Delete the annoying three spaces preceding each line of links | |
325 | ;; output. | |
326 | (goto-char (point-min)) | |
327 | (while (re-search-forward "^ " nil t) | |
328 | (delete-region (match-beginning 0) (match-end 0)))) | |
329 | ||
330 | (defun mm-inline-wash-with-file (post-func cmd &rest args) | |
331 | (let ((file (mm-make-temp-file | |
332 | (expand-file-name "mm" mm-tmp-directory)))) | |
333 | (let ((coding-system-for-write 'binary)) | |
334 | (write-region (point-min) (point-max) file nil 'silent)) | |
335 | (delete-region (point-min) (point-max)) | |
336 | (unwind-protect | |
337 | (apply 'call-process cmd nil t nil (mapcar 'eval args)) | |
338 | (delete-file file)) | |
339 | (and post-func (funcall post-func)))) | |
340 | ||
341 | (defun mm-inline-wash-with-stdin (post-func cmd &rest args) | |
342 | (let ((coding-system-for-write 'binary)) | |
343 | (apply 'call-process-region (point-min) (point-max) | |
344 | cmd t t nil args)) | |
345 | (and post-func (funcall post-func))) | |
346 | ||
347 | (defun mm-inline-render-with-file (handle post-func cmd &rest args) | |
348 | (let ((source (mm-get-part handle))) | |
349 | (mm-insert-inline | |
350 | handle | |
351 | (mm-with-unibyte-buffer | |
352 | (insert source) | |
353 | (apply 'mm-inline-wash-with-file post-func cmd args) | |
354 | (buffer-string))))) | |
355 | ||
356 | (defun mm-inline-render-with-stdin (handle post-func cmd &rest args) | |
357 | (let ((source (mm-get-part handle))) | |
358 | (mm-insert-inline | |
359 | handle | |
360 | (mm-with-unibyte-buffer | |
361 | (insert source) | |
362 | (apply 'mm-inline-wash-with-stdin post-func cmd args) | |
363 | (buffer-string))))) | |
364 | ||
365 | (defun mm-inline-render-with-function (handle func &rest args) | |
366 | (let ((source (mm-get-part handle)) | |
6b554e88 MB |
367 | (charset (or (mail-content-type-get (mm-handle-type handle) 'charset) |
368 | mail-parse-charset))) | |
23f87bed MB |
369 | (mm-insert-inline |
370 | handle | |
371 | (mm-with-multibyte-buffer | |
372 | (insert (if charset | |
373 | (mm-decode-string source charset) | |
374 | source)) | |
375 | (apply func args) | |
376 | (buffer-string))))) | |
377 | ||
378 | (defun mm-inline-text-html (handle) | |
379 | (let* ((func (or mm-inline-text-html-renderer mm-text-html-renderer)) | |
380 | (entry (assq func mm-text-html-renderer-alist)) | |
381 | buffer-read-only) | |
382 | (if entry | |
383 | (setq func (cdr entry))) | |
384 | (cond | |
385 | ((functionp func) | |
386 | (funcall func handle)) | |
c113de23 | 387 | (t |
23f87bed MB |
388 | (apply (car func) handle (cdr func)))))) |
389 | ||
390 | (defun mm-inline-text-vcard (handle) | |
391 | (let (buffer-read-only) | |
392 | (mm-insert-inline | |
393 | handle | |
394 | (concat "\n-- \n" | |
395 | (ignore-errors | |
396 | (if (fboundp 'vcard-pretty-print) | |
397 | (vcard-pretty-print (mm-get-part handle)) | |
398 | (vcard-format-string | |
399 | (vcard-parse-string (mm-get-part handle) | |
400 | 'vcard-standard-filter)))))))) | |
401 | ||
402 | (defun mm-inline-text (handle) | |
403 | (let ((b (point)) | |
404 | (type (mm-handle-media-subtype handle)) | |
405 | (charset (mail-content-type-get | |
406 | (mm-handle-type handle) 'charset)) | |
407 | buffer-read-only) | |
408 | (if (or (eq charset 'gnus-decoded) | |
409 | ;; This is probably not entirely correct, but | |
410 | ;; makes rfc822 parts with embedded multiparts work. | |
411 | (eq mail-parse-charset 'gnus-decoded)) | |
c113de23 | 412 | (save-restriction |
23f87bed MB |
413 | (narrow-to-region (point) (point)) |
414 | (mm-insert-part handle) | |
415 | (goto-char (point-max))) | |
416 | (insert (mm-decode-string (mm-get-part handle) charset))) | |
5f4264e5 MB |
417 | (when (and mm-fill-flowed |
418 | (equal type "plain") | |
23f87bed MB |
419 | (equal (cdr (assoc 'format (mm-handle-type handle))) |
420 | "flowed")) | |
421 | (save-restriction | |
422 | (narrow-to-region b (point)) | |
423 | (goto-char b) | |
01c52d31 MB |
424 | (fill-flowed nil (equal (cdr (assoc 'delsp (mm-handle-type handle))) |
425 | "yes")) | |
23f87bed MB |
426 | (goto-char (point-max)))) |
427 | (save-restriction | |
428 | (narrow-to-region b (point)) | |
23f87bed MB |
429 | (when (or (equal type "enriched") |
430 | (equal type "richtext")) | |
53cfefc8 | 431 | (set-text-properties (point-min) (point-max) nil) |
23f87bed MB |
432 | (ignore-errors |
433 | (enriched-decode (point-min) (point-max)))) | |
434 | (mm-handle-set-undisplayer | |
435 | handle | |
436 | `(lambda () | |
437 | (let (buffer-read-only) | |
438 | (delete-region ,(point-min-marker) | |
439 | ,(point-max-marker)))))))) | |
c113de23 GM |
440 | |
441 | (defun mm-insert-inline (handle text) | |
442 | "Insert TEXT inline from HANDLE." | |
23f87bed | 443 | (let ((b (point))) |
c113de23 | 444 | (insert text) |
01c52d31 MB |
445 | (unless (bolp) |
446 | (insert "\n")) | |
c113de23 GM |
447 | (mm-handle-set-undisplayer |
448 | handle | |
449 | `(lambda () | |
450 | (let (buffer-read-only) | |
451 | (delete-region ,(set-marker (make-marker) b) | |
452 | ,(set-marker (make-marker) (point)))))))) | |
453 | ||
454 | (defun mm-inline-audio (handle) | |
455 | (message "Not implemented")) | |
456 | ||
457 | (defun mm-view-sound-file () | |
458 | (message "Not implemented")) | |
459 | ||
460 | (defun mm-w3-prepare-buffer () | |
461 | (require 'w3) | |
6833e8ba | 462 | (let ((url-standalone-mode t) |
23f87bed MB |
463 | (url-gateway-unplugged t) |
464 | (w3-honor-stylesheets nil)) | |
c113de23 GM |
465 | (w3-prepare-buffer))) |
466 | ||
467 | (defun mm-view-message () | |
468 | (mm-enable-multibyte) | |
469 | (let (handles) | |
470 | (let (gnus-article-mime-handles) | |
471 | ;; Double decode problem may happen. See mm-inline-message. | |
472 | (run-hooks 'gnus-article-decode-hook) | |
473 | (gnus-article-prepare-display) | |
474 | (setq handles gnus-article-mime-handles)) | |
475 | (when handles | |
476 | (setq gnus-article-mime-handles | |
23f87bed | 477 | (mm-merge-handles gnus-article-mime-handles handles)))) |
c113de23 GM |
478 | (fundamental-mode) |
479 | (goto-char (point-min))) | |
480 | ||
481 | (defun mm-inline-message (handle) | |
482 | (let ((b (point)) | |
4e728580 | 483 | (bolp (bolp)) |
c113de23 GM |
484 | (charset (mail-content-type-get |
485 | (mm-handle-type handle) 'charset)) | |
486 | gnus-displaying-mime handles) | |
487 | (when (and charset | |
488 | (stringp charset)) | |
489 | (setq charset (intern (downcase charset))) | |
490 | (when (eq charset 'us-ascii) | |
491 | (setq charset nil))) | |
492 | (save-excursion | |
493 | (save-restriction | |
494 | (narrow-to-region b b) | |
495 | (mm-insert-part handle) | |
496 | (let (gnus-article-mime-handles | |
4e728580 SZ |
497 | ;; disable prepare hook |
498 | gnus-article-prepare-hook | |
c113de23 | 499 | (gnus-newsgroup-charset |
34128042 MB |
500 | (unless (eq charset 'gnus-decoded) ;; mm-uu might set it. |
501 | (or charset gnus-newsgroup-charset)))) | |
23f87bed MB |
502 | (let ((gnus-original-article-buffer (mm-handle-buffer handle))) |
503 | (run-hooks 'gnus-article-decode-hook)) | |
c113de23 GM |
504 | (gnus-article-prepare-display) |
505 | (setq handles gnus-article-mime-handles)) | |
4e728580 SZ |
506 | (goto-char (point-min)) |
507 | (unless bolp | |
508 | (insert "\n")) | |
c113de23 GM |
509 | (goto-char (point-max)) |
510 | (unless (bolp) | |
511 | (insert "\n")) | |
512 | (insert "----------\n\n") | |
513 | (when handles | |
514 | (setq gnus-article-mime-handles | |
23f87bed | 515 | (mm-merge-handles gnus-article-mime-handles handles))) |
c113de23 GM |
516 | (mm-handle-set-undisplayer |
517 | handle | |
518 | `(lambda () | |
519 | (let (buffer-read-only) | |
722a8409 | 520 | (if (fboundp 'remove-specifier) |
c113de23 GM |
521 | ;; This is only valid on XEmacs. |
522 | (mapcar (lambda (prop) | |
523 | (remove-specifier | |
524 | (face-property 'default prop) (current-buffer))) | |
722a8409 | 525 | '(background background-pixmap foreground))) |
c113de23 GM |
526 | (delete-region ,(point-min-marker) ,(point-max-marker))))))))) |
527 | ||
ce9401f3 | 528 | (defun mm-display-inline-fontify (handle mode) |
01c52d31 MB |
529 | (let ((charset (mail-content-type-get (mm-handle-type handle) 'charset)) |
530 | text coding-system) | |
531 | (unless (eq charset 'gnus-decoded) | |
532 | (mm-with-unibyte-buffer | |
533 | (mm-insert-part handle) | |
534 | (mm-decompress-buffer | |
535 | (or (mail-content-type-get (mm-handle-disposition handle) 'name) | |
536 | (mail-content-type-get (mm-handle-disposition handle) 'filename)) | |
537 | t t) | |
538 | (unless charset | |
539 | (setq coding-system (mm-find-buffer-file-coding-system))) | |
540 | (setq text (buffer-string)))) | |
23f87bed MB |
541 | ;; XEmacs @#$@ version of font-lock refuses to fully turn itself |
542 | ;; on for buffers whose name begins with " ". That's why we use | |
01c52d31 MB |
543 | ;; `with-current-buffer'/`generate-new-buffer' rather than |
544 | ;; `with-temp-buffer'. | |
545 | (with-current-buffer (generate-new-buffer "*fontification*") | |
546 | (buffer-disable-undo) | |
547 | (mm-enable-multibyte) | |
548 | (insert (cond ((eq charset 'gnus-decoded) | |
549 | (with-current-buffer (mm-handle-buffer handle) | |
550 | (buffer-string))) | |
551 | (coding-system | |
552 | (mm-decode-coding-string text coding-system)) | |
553 | (charset | |
554 | (mm-decode-string text charset)) | |
555 | (t | |
556 | text))) | |
557 | (require 'font-lock) | |
558 | (let ((font-lock-maximum-size nil) | |
559 | ;; Disable support modes, e.g., jit-lock, lazy-lock, etc. | |
560 | (font-lock-mode-hook nil) | |
561 | (font-lock-support-mode nil) | |
562 | ;; I find font-lock a bit too verbose. | |
563 | (font-lock-verbose nil)) | |
564 | (funcall mode) | |
565 | ;; The mode function might have already turned on font-lock. | |
566 | (unless (symbol-value 'font-lock-mode) | |
567 | (font-lock-fontify-buffer))) | |
568 | ;; By default, XEmacs font-lock uses non-duplicable text | |
569 | ;; properties. This code forces all the text properties | |
570 | ;; to be copied along with the text. | |
571 | (when (fboundp 'extent-list) | |
572 | (map-extents (lambda (ext ignored) | |
573 | (set-extent-property ext 'duplicable t) | |
574 | nil) | |
575 | nil nil nil nil nil 'text-prop)) | |
576 | (setq text (buffer-string)) | |
577 | (kill-buffer (current-buffer))) | |
c113de23 GM |
578 | (mm-insert-inline handle text))) |
579 | ||
23f87bed MB |
580 | ;; Shouldn't these functions check whether the user even wants to use |
581 | ;; font-lock? At least under XEmacs, this fontification is pretty | |
582 | ;; much unconditional. Also, it would be nice to change for the size | |
583 | ;; of the fontified region. | |
584 | ||
ce9401f3 DL |
585 | (defun mm-display-patch-inline (handle) |
586 | (mm-display-inline-fontify handle 'diff-mode)) | |
587 | ||
588 | (defun mm-display-elisp-inline (handle) | |
589 | (mm-display-inline-fontify handle 'emacs-lisp-mode)) | |
590 | ||
01c52d31 MB |
591 | (defun mm-display-dns-inline (handle) |
592 | (mm-display-inline-fontify handle 'dns-mode)) | |
593 | ||
23f87bed MB |
594 | ;; id-signedData OBJECT IDENTIFIER ::= { iso(1) member-body(2) |
595 | ;; us(840) rsadsi(113549) pkcs(1) pkcs7(7) 2 } | |
596 | (defvar mm-pkcs7-signed-magic | |
597 | (mm-string-as-unibyte | |
01c52d31 MB |
598 | (mapconcat 'char-to-string |
599 | (list ?\x30 ?\x5c ?\x28 ?\x80 ?\x5c ?\x7c ?\x81 ?\x2e ?\x5c | |
600 | ?\x7c ?\x82 ?\x2e ?\x2e ?\x5c ?\x7c ?\x83 ?\x2e ?\x2e | |
601 | ?\x2e ?\x5c ?\x29 ?\x06 ?\x09 ?\x5c ?\x2a ?\x86 ?\x48 | |
602 | ?\x86 ?\xf7 ?\x0d ?\x01 ?\x07 ?\x02) ""))) | |
23f87bed MB |
603 | |
604 | ;; id-envelopedData OBJECT IDENTIFIER ::= { iso(1) member-body(2) | |
605 | ;; us(840) rsadsi(113549) pkcs(1) pkcs7(7) 3 } | |
606 | (defvar mm-pkcs7-enveloped-magic | |
607 | (mm-string-as-unibyte | |
01c52d31 MB |
608 | (mapconcat 'char-to-string |
609 | (list ?\x30 ?\x5c ?\x28 ?\x80 ?\x5c ?\x7c ?\x81 ?\x2e ?\x5c | |
610 | ?\x7c ?\x82 ?\x2e ?\x2e ?\x5c ?\x7c ?\x83 ?\x2e ?\x2e | |
611 | ?\x2e ?\x5c ?\x29 ?\x06 ?\x09 ?\x5c ?\x2a ?\x86 ?\x48 | |
612 | ?\x86 ?\xf7 ?\x0d ?\x01 ?\x07 ?\x03) ""))) | |
23f87bed MB |
613 | |
614 | (defun mm-view-pkcs7-get-type (handle) | |
615 | (mm-with-unibyte-buffer | |
616 | (mm-insert-part handle) | |
617 | (cond ((looking-at mm-pkcs7-enveloped-magic) | |
618 | 'enveloped) | |
619 | ((looking-at mm-pkcs7-signed-magic) | |
620 | 'signed) | |
621 | (t | |
622 | (error "Could not identify PKCS#7 type"))))) | |
623 | ||
624 | (defun mm-view-pkcs7 (handle) | |
625 | (case (mm-view-pkcs7-get-type handle) | |
626 | (enveloped (mm-view-pkcs7-decrypt handle)) | |
627 | (signed (mm-view-pkcs7-verify handle)) | |
628 | (otherwise (error "Unknown or unimplemented PKCS#7 type")))) | |
629 | ||
630 | (defun mm-view-pkcs7-verify (handle) | |
01c52d31 MB |
631 | (let ((verified nil)) |
632 | (with-temp-buffer | |
633 | (insert "MIME-Version: 1.0\n") | |
634 | (mm-insert-headers "application/pkcs7-mime" "base64" "smime.p7m") | |
635 | (insert-buffer-substring (mm-handle-buffer handle)) | |
636 | (setq verified (smime-verify-region (point-min) (point-max)))) | |
637 | (goto-char (point-min)) | |
638 | (mm-insert-part handle) | |
639 | (if (search-forward "Content-Type: " nil t) | |
640 | (delete-region (point-min) (match-beginning 0))) | |
641 | (goto-char (point-max)) | |
642 | (if (re-search-backward "--\r?\n?" nil t) | |
643 | (delete-region (match-end 0) (point-max))) | |
644 | (unless verified | |
645 | (insert-buffer-substring smime-details-buffer))) | |
23f87bed MB |
646 | (goto-char (point-min)) |
647 | (while (search-forward "\r\n" nil t) | |
648 | (replace-match "\n")) | |
23f87bed MB |
649 | t) |
650 | ||
23f87bed MB |
651 | (defun mm-view-pkcs7-decrypt (handle) |
652 | (insert-buffer-substring (mm-handle-buffer handle)) | |
653 | (goto-char (point-min)) | |
654 | (insert "MIME-Version: 1.0\n") | |
655 | (mm-insert-headers "application/pkcs7-mime" "base64" "smime.p7m") | |
656 | (smime-decrypt-region | |
657 | (point-min) (point-max) | |
658 | (if (= (length smime-keys) 1) | |
659 | (cadar smime-keys) | |
660 | (smime-get-key-by-email | |
01c52d31 | 661 | (completing-read |
81df110a | 662 | (concat "Decipher using key" |
01c52d31 | 663 | (if smime-keys (concat "(default " (caar smime-keys) "): ") |
81df110a | 664 | ": ")) |
23f87bed MB |
665 | smime-keys nil nil nil nil (car-safe (car-safe smime-keys)))))) |
666 | (goto-char (point-min)) | |
667 | (while (search-forward "\r\n" nil t) | |
668 | (replace-match "\n")) | |
669 | (goto-char (point-min))) | |
670 | ||
c113de23 GM |
671 | (provide 'mm-view) |
672 | ||
ab5796a9 | 673 | ;;; arch-tag: b60e749a-d05c-47f2-bccd-bdaa59327cb2 |
715a2ca2 | 674 | ;;; mm-view.el ends here |