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715a2ca2 | 1 | ;;; mm-view.el --- functions for viewing MIME objects |
e84b4b86 | 2 | |
73b0cd50 | 3 | ;; Copyright (C) 1998-2011 Free Software Foundation, Inc. |
c113de23 GM |
4 | |
5 | ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> | |
6 | ;; This file is part of GNU Emacs. | |
7 | ||
5e809f55 | 8 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
c113de23 | 9 | ;; it under the terms of the GNU General Public License as published by |
5e809f55 GM |
10 | ;; the Free Software Foundation, either version 3 of the License, or |
11 | ;; (at your option) any later version. | |
c113de23 GM |
12 | |
13 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
14 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
5e809f55 | 15 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
c113de23 GM |
16 | ;; GNU General Public License for more details. |
17 | ||
18 | ;; You should have received a copy of the GNU General Public License | |
5e809f55 | 19 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
c113de23 GM |
20 | |
21 | ;;; Commentary: | |
22 | ||
23 | ;;; Code: | |
f0b7f5a8 KY |
24 | |
25 | ;; For Emacs <22.2 and XEmacs. | |
49ad38a1 GM |
26 | (eval-and-compile |
27 | (unless (fboundp 'declare-function) (defmacro declare-function (&rest r)))) | |
c113de23 GM |
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) |
bb7f5cbc | 34 | (require 'mml-smime) |
c113de23 | 35 | |
229b59da | 36 | (autoload 'gnus-completing-read "gnus-util") |
a41c2e6d | 37 | (autoload 'gnus-window-inside-pixel-edges "gnus-ems") |
8abf1b22 GM |
38 | (autoload 'gnus-article-prepare-display "gnus-art") |
39 | (autoload 'vcard-parse-string "vcard") | |
40 | (autoload 'vcard-format-string "vcard") | |
41 | (autoload 'fill-flowed "flow-fill") | |
42 | (autoload 'html2text "html2text" nil t) | |
c113de23 | 43 | |
dd3eac76 JB |
44 | (defvar gnus-article-mime-handles) |
45 | (defvar gnus-newsgroup-charset) | |
46 | (defvar smime-keys) | |
47 | (defvar w3m-cid-retrieve-function-alist) | |
48 | (defvar w3m-current-buffer) | |
49 | (defvar w3m-display-inline-images) | |
50 | (defvar w3m-minor-mode-map) | |
51 | ||
23f87bed | 52 | (defvar mm-text-html-renderer-alist |
2526f423 G |
53 | '((shr . mm-shr) |
54 | (w3 . mm-inline-text-html-render-with-w3) | |
23f87bed | 55 | (w3m . mm-inline-text-html-render-with-w3m) |
73043f7d | 56 | (w3m-standalone . mm-inline-text-html-render-with-w3m-standalone) |
2526f423 | 57 | (gnus-w3m . gnus-article-html) |
23f87bed MB |
58 | (links mm-inline-render-with-file |
59 | mm-links-remove-leading-blank | |
60 | "links" "-dump" file) | |
2526f423 G |
61 | (lynx mm-inline-render-with-stdin nil |
62 | "lynx" "-dump" "-force_html" "-stdin" "-nolist") | |
63 | (html2text mm-inline-render-with-function html2text)) | |
23f87bed MB |
64 | "The attributes of renderer types for text/html.") |
65 | ||
5f4264e5 | 66 | (defcustom mm-fill-flowed t |
01c52d31 | 67 | "If non-nil a format=flowed article will be displayed flowed." |
5f4264e5 MB |
68 | :type 'boolean |
69 | :version "22.1" | |
70 | :group 'mime-display) | |
71 | ||
a41c2e6d G |
72 | (defcustom mm-inline-large-images-proportion 0.9 |
73 | "Maximum proportion of large image resized when | |
74 | `mm-inline-large-images' is set to resize." | |
75 | :type 'float | |
76 | :version "24.1" | |
77 | :group 'mime-display) | |
78 | ||
23f87bed MB |
79 | ;;; Internal variables. |
80 | ||
c113de23 GM |
81 | ;;; |
82 | ;;; Functions for displaying various formats inline | |
83 | ;;; | |
23f87bed | 84 | |
c36dea19 GM |
85 | (autoload 'gnus-rescale-image "gnus-util") |
86 | ||
c113de23 GM |
87 | (defun mm-inline-image-emacs (handle) |
88 | (let ((b (point-marker)) | |
3d2440b4 | 89 | (inhibit-read-only t)) |
a41c2e6d G |
90 | (put-image |
91 | (let ((image (mm-get-image handle))) | |
92 | (if (eq mm-inline-large-images 'resize) | |
93 | (gnus-rescale-image image | |
94 | (let ((edges (gnus-window-inside-pixel-edges | |
95 | (get-buffer-window (current-buffer))))) | |
96 | (cons (truncate (* mm-inline-large-images-proportion | |
97 | (- (nth 2 edges) (nth 0 edges)))) | |
98 | (truncate (* mm-inline-large-images-proportion | |
99 | (- (nth 3 edges) (nth 1 edges))))))) | |
100 | image)) | |
101 | b) | |
23f87bed | 102 | (insert "\n\n") |
c113de23 GM |
103 | (mm-handle-set-undisplayer |
104 | handle | |
23f87bed MB |
105 | `(lambda () |
106 | (let ((b ,b) | |
3d2440b4 | 107 | (inhibit-read-only t)) |
23f87bed MB |
108 | (remove-images b b) |
109 | (delete-region b (+ b 2))))))) | |
c113de23 GM |
110 | |
111 | (defun mm-inline-image-xemacs (handle) | |
9efa445f DN |
112 | (when (featurep 'xemacs) |
113 | (insert "\n\n") | |
114 | (forward-char -2) | |
115 | (let ((annot (make-annotation (mm-get-image handle) nil 'text)) | |
3d2440b4 | 116 | (inhibit-read-only t)) |
9efa445f DN |
117 | (mm-handle-set-undisplayer |
118 | handle | |
119 | `(lambda () | |
120 | (let ((b ,(point-marker)) | |
3d2440b4 | 121 | (inhibit-read-only t)) |
9efa445f DN |
122 | (delete-annotation ,annot) |
123 | (delete-region (- b 2) b)))) | |
124 | (set-extent-property annot 'mm t) | |
125 | (set-extent-property annot 'duplicable t)))) | |
c113de23 GM |
126 | |
127 | (eval-and-compile | |
722a8409 | 128 | (if (featurep 'xemacs) |
c113de23 GM |
129 | (defalias 'mm-inline-image 'mm-inline-image-xemacs) |
130 | (defalias 'mm-inline-image 'mm-inline-image-emacs))) | |
131 | ||
49ad38a1 GM |
132 | ;; External. |
133 | (declare-function w3-do-setup "ext:w3" ()) | |
134 | (declare-function w3-region "ext:w3-display" (st nd)) | |
135 | (declare-function w3-prepare-buffer "ext:w3-display" (&rest args)) | |
136 | ||
c113de23 GM |
137 | (defvar mm-w3-setup nil) |
138 | (defun mm-setup-w3 () | |
139 | (unless mm-w3-setup | |
140 | (require 'w3) | |
141 | (w3-do-setup) | |
142 | (require 'url) | |
143 | (require 'w3-vars) | |
144 | (require 'url-vars) | |
145 | (setq mm-w3-setup t))) | |
146 | ||
23f87bed MB |
147 | (defun mm-inline-text-html-render-with-w3 (handle) |
148 | (mm-setup-w3) | |
149 | (let ((text (mm-get-part handle)) | |
150 | (b (point)) | |
151 | (url-standalone-mode t) | |
152 | (url-gateway-unplugged t) | |
153 | (w3-honor-stylesheets nil) | |
154 | (url-current-object | |
155 | (url-generic-parse-url (format "cid:%s" (mm-handle-id handle)))) | |
156 | (width (window-width)) | |
157 | (charset (mail-content-type-get | |
158 | (mm-handle-type handle) 'charset))) | |
159 | (save-excursion | |
01c52d31 | 160 | (insert (if charset (mm-decode-string text charset) text)) |
23f87bed MB |
161 | (save-restriction |
162 | (narrow-to-region b (point)) | |
01c52d31 MB |
163 | (unless charset |
164 | (goto-char (point-min)) | |
165 | (when (or (and (boundp 'w3-meta-content-type-charset-regexp) | |
166 | (re-search-forward | |
167 | w3-meta-content-type-charset-regexp nil t)) | |
168 | (and (boundp 'w3-meta-charset-content-type-regexp) | |
169 | (re-search-forward | |
170 | w3-meta-charset-content-type-regexp nil t))) | |
23f87bed | 171 | (setq charset |
01c52d31 MB |
172 | (let ((bsubstr (buffer-substring-no-properties |
173 | (match-beginning 2) | |
174 | (match-end 2)))) | |
175 | (if (fboundp 'w3-coding-system-for-mime-charset) | |
176 | (w3-coding-system-for-mime-charset bsubstr) | |
177 | (mm-charset-to-coding-system bsubstr)))) | |
178 | (delete-region (point-min) (point-max)) | |
179 | (insert (mm-decode-string text charset)))) | |
23f87bed | 180 | (save-window-excursion |
c113de23 | 181 | (save-restriction |
23f87bed MB |
182 | (let ((w3-strict-width width) |
183 | ;; Don't let w3 set the global version of | |
184 | ;; this variable. | |
185 | (fill-column fill-column)) | |
186 | (if (or debug-on-error debug-on-quit) | |
187 | (w3-region (point-min) (point-max)) | |
188 | (condition-case () | |
189 | (w3-region (point-min) (point-max)) | |
190 | (error | |
191 | (delete-region (point-min) (point-max)) | |
192 | (let ((b (point)) | |
193 | (charset (mail-content-type-get | |
194 | (mm-handle-type handle) 'charset))) | |
195 | (if (or (eq charset 'gnus-decoded) | |
196 | (eq mail-parse-charset 'gnus-decoded)) | |
197 | (save-restriction | |
198 | (narrow-to-region (point) (point)) | |
199 | (mm-insert-part handle) | |
200 | (goto-char (point-max))) | |
201 | (insert (mm-decode-string (mm-get-part handle) | |
202 | charset)))) | |
203 | (message | |
204 | "Error while rendering html; showing as text/plain"))))))) | |
205 | (mm-handle-set-undisplayer | |
206 | handle | |
207 | `(lambda () | |
3d2440b4 | 208 | (let ((inhibit-read-only t)) |
01c52d31 | 209 | ,@(if (functionp 'remove-specifier) |
3d2440b4 SM |
210 | '((dolist (prop '(background background-pixmap foreground)) |
211 | (remove-specifier | |
212 | (face-property 'default prop) | |
213 | (current-buffer))))) | |
23f87bed MB |
214 | (delete-region ,(point-min-marker) |
215 | ,(point-max-marker))))))))) | |
216 | ||
217 | (defvar mm-w3m-setup nil | |
218 | "Whether gnus-article-mode has been setup to use emacs-w3m.") | |
219 | ||
49ad38a1 GM |
220 | ;; External. |
221 | (declare-function w3m-detect-meta-charset "ext:w3m" ()) | |
222 | (declare-function w3m-region "ext:w3m" (start end &optional url charset)) | |
223 | ||
23f87bed MB |
224 | (defun mm-setup-w3m () |
225 | "Setup gnus-article-mode to use emacs-w3m." | |
226 | (unless mm-w3m-setup | |
227 | (require 'w3m) | |
228 | (unless (assq 'gnus-article-mode w3m-cid-retrieve-function-alist) | |
229 | (push (cons 'gnus-article-mode 'mm-w3m-cid-retrieve) | |
230 | w3m-cid-retrieve-function-alist)) | |
231 | (setq mm-w3m-setup t)) | |
232 | (setq w3m-display-inline-images mm-inline-text-html-with-images)) | |
233 | ||
234 | (defun mm-w3m-cid-retrieve-1 (url handle) | |
54506618 | 235 | (dolist (elem handle) |
fe62aacc MB |
236 | (when (consp elem) |
237 | (when (equal url (mm-handle-id elem)) | |
238 | (mm-insert-part elem) | |
239 | (throw 'found-handle (mm-handle-media-type elem))) | |
240 | (when (and (stringp (car elem)) | |
241 | (equal "multipart" (mm-handle-media-supertype elem))) | |
242 | (mm-w3m-cid-retrieve-1 url elem))))) | |
23f87bed MB |
243 | |
244 | (defun mm-w3m-cid-retrieve (url &rest args) | |
245 | "Insert a content pointed by URL if it has the cid: scheme." | |
246 | (when (string-match "\\`cid:" url) | |
fe62aacc MB |
247 | (or (catch 'found-handle |
248 | (mm-w3m-cid-retrieve-1 | |
249 | (setq url (concat "<" (substring url (match-end 0)) ">")) | |
250 | (with-current-buffer w3m-current-buffer | |
251 | gnus-article-mime-handles))) | |
252 | (prog1 | |
253 | nil | |
254 | (message "Failed to find \"Content-ID: %s\"" url))))) | |
23f87bed MB |
255 | |
256 | (defun mm-inline-text-html-render-with-w3m (handle) | |
257 | "Render a text/html part using emacs-w3m." | |
258 | (mm-setup-w3m) | |
259 | (let ((text (mm-get-part handle)) | |
260 | (b (point)) | |
6b554e88 MB |
261 | (charset (or (mail-content-type-get (mm-handle-type handle) 'charset) |
262 | mail-parse-charset))) | |
23f87bed MB |
263 | (save-excursion |
264 | (insert (if charset (mm-decode-string text charset) text)) | |
265 | (save-restriction | |
266 | (narrow-to-region b (point)) | |
267 | (unless charset | |
268 | (goto-char (point-min)) | |
269 | (when (setq charset (w3m-detect-meta-charset)) | |
c113de23 | 270 | (delete-region (point-min) (point-max)) |
23f87bed MB |
271 | (insert (mm-decode-string text charset)))) |
272 | (let ((w3m-safe-url-regexp mm-w3m-safe-url-regexp) | |
273 | w3m-force-redisplay) | |
274 | (w3m-region (point-min) (point-max) nil charset)) | |
1250af7b KY |
275 | ;; Put the mark meaning this part was rendered by emacs-w3m. |
276 | (put-text-property (point-min) (point-max) | |
277 | 'mm-inline-text-html-with-w3m t) | |
23f87bed MB |
278 | (when (and mm-inline-text-html-with-w3m-keymap |
279 | (boundp 'w3m-minor-mode-map) | |
280 | w3m-minor-mode-map) | |
886367d8 KY |
281 | (if (and (boundp 'w3m-link-map) |
282 | w3m-link-map) | |
1250af7b KY |
283 | (let* ((start (point-min)) |
284 | (end (point-max)) | |
285 | (on (get-text-property start 'w3m-href-anchor)) | |
286 | (map (copy-keymap w3m-link-map)) | |
287 | next) | |
886367d8 | 288 | (set-keymap-parent map w3m-minor-mode-map) |
1250af7b KY |
289 | (while (< start end) |
290 | (if on | |
291 | (progn | |
292 | (setq next (or (text-property-any start end | |
293 | 'w3m-href-anchor nil) | |
294 | end)) | |
295 | (put-text-property start next 'keymap map)) | |
296 | (setq next (or (text-property-not-all start end | |
297 | 'w3m-href-anchor nil) | |
298 | end)) | |
299 | (put-text-property start next 'keymap w3m-minor-mode-map)) | |
300 | (setq start next | |
301 | on (not on)))) | |
302 | (put-text-property (point-min) (point-max) | |
303 | 'keymap w3m-minor-mode-map))) | |
58090a8d MB |
304 | (mm-handle-set-undisplayer |
305 | handle | |
306 | `(lambda () | |
01c52d31 | 307 | (let ((inhibit-read-only t)) |
58090a8d MB |
308 | (delete-region ,(point-min-marker) |
309 | ,(point-max-marker))))))))) | |
23f87bed | 310 | |
7347faa8 MB |
311 | (defvar mm-w3m-standalone-supports-m17n-p (if (featurep 'mule) 'undecided) |
312 | "*T means the w3m command supports the m17n feature.") | |
313 | ||
314 | (defun mm-w3m-standalone-supports-m17n-p () | |
315 | "Say whether the w3m command supports the m17n feature." | |
316 | (cond ((eq mm-w3m-standalone-supports-m17n-p t) t) | |
317 | ((eq mm-w3m-standalone-supports-m17n-p nil) nil) | |
318 | ((not (featurep 'mule)) (setq mm-w3m-standalone-supports-m17n-p nil)) | |
319 | ((condition-case nil | |
320 | (let ((coding-system-for-write 'iso-2022-jp) | |
321 | (coding-system-for-read 'iso-2022-jp) | |
322 | (str (mm-decode-coding-string "\ | |
8f7abae3 | 323 | \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))) |
7347faa8 MB |
324 | (mm-with-multibyte-buffer |
325 | (insert str) | |
326 | (call-process-region | |
327 | (point-min) (point-max) "w3m" t t nil "-dump" | |
328 | "-T" "text/html" "-I" "iso-2022-jp" "-O" "iso-2022-jp") | |
329 | (goto-char (point-min)) | |
330 | (search-forward str nil t))) | |
331 | (error nil)) | |
332 | (setq mm-w3m-standalone-supports-m17n-p t)) | |
333 | (t | |
334 | ;;(message "You had better upgrade your w3m command") | |
335 | (setq mm-w3m-standalone-supports-m17n-p nil)))) | |
336 | ||
73043f7d MB |
337 | (defun mm-inline-text-html-render-with-w3m-standalone (handle) |
338 | "Render a text/html part using w3m." | |
7347faa8 MB |
339 | (if (mm-w3m-standalone-supports-m17n-p) |
340 | (let ((source (mm-get-part handle)) | |
6b554e88 MB |
341 | (charset (or (mail-content-type-get (mm-handle-type handle) |
342 | 'charset) | |
343 | (symbol-name mail-parse-charset))) | |
7347faa8 MB |
344 | cs) |
345 | (unless (and charset | |
346 | (setq cs (mm-charset-to-coding-system charset)) | |
347 | (not (eq cs 'ascii))) | |
348 | ;; The default. | |
349 | (setq charset "iso-8859-1" | |
350 | cs 'iso-8859-1)) | |
351 | (mm-insert-inline | |
352 | handle | |
353 | (mm-with-unibyte-buffer | |
354 | (insert source) | |
355 | (mm-enable-multibyte) | |
356 | (let ((coding-system-for-write 'binary) | |
357 | (coding-system-for-read cs)) | |
358 | (call-process-region | |
359 | (point-min) (point-max) | |
360 | "w3m" t t nil "-dump" "-T" "text/html" | |
361 | "-I" charset "-O" charset)) | |
362 | (buffer-string)))) | |
363 | (mm-inline-render-with-stdin handle nil "w3m" "-dump" "-T" "text/html"))) | |
73043f7d | 364 | |
23f87bed MB |
365 | (defun mm-links-remove-leading-blank () |
366 | ;; Delete the annoying three spaces preceding each line of links | |
367 | ;; output. | |
368 | (goto-char (point-min)) | |
369 | (while (re-search-forward "^ " nil t) | |
370 | (delete-region (match-beginning 0) (match-end 0)))) | |
371 | ||
372 | (defun mm-inline-wash-with-file (post-func cmd &rest args) | |
373 | (let ((file (mm-make-temp-file | |
374 | (expand-file-name "mm" mm-tmp-directory)))) | |
375 | (let ((coding-system-for-write 'binary)) | |
376 | (write-region (point-min) (point-max) file nil 'silent)) | |
377 | (delete-region (point-min) (point-max)) | |
378 | (unwind-protect | |
379 | (apply 'call-process cmd nil t nil (mapcar 'eval args)) | |
380 | (delete-file file)) | |
381 | (and post-func (funcall post-func)))) | |
382 | ||
383 | (defun mm-inline-wash-with-stdin (post-func cmd &rest args) | |
384 | (let ((coding-system-for-write 'binary)) | |
385 | (apply 'call-process-region (point-min) (point-max) | |
386 | cmd t t nil args)) | |
387 | (and post-func (funcall post-func))) | |
388 | ||
389 | (defun mm-inline-render-with-file (handle post-func cmd &rest args) | |
390 | (let ((source (mm-get-part handle))) | |
391 | (mm-insert-inline | |
392 | handle | |
393 | (mm-with-unibyte-buffer | |
394 | (insert source) | |
395 | (apply 'mm-inline-wash-with-file post-func cmd args) | |
396 | (buffer-string))))) | |
397 | ||
398 | (defun mm-inline-render-with-stdin (handle post-func cmd &rest args) | |
399 | (let ((source (mm-get-part handle))) | |
400 | (mm-insert-inline | |
401 | handle | |
402 | (mm-with-unibyte-buffer | |
403 | (insert source) | |
404 | (apply 'mm-inline-wash-with-stdin post-func cmd args) | |
405 | (buffer-string))))) | |
406 | ||
407 | (defun mm-inline-render-with-function (handle func &rest args) | |
408 | (let ((source (mm-get-part handle)) | |
6b554e88 MB |
409 | (charset (or (mail-content-type-get (mm-handle-type handle) 'charset) |
410 | mail-parse-charset))) | |
23f87bed MB |
411 | (mm-insert-inline |
412 | handle | |
413 | (mm-with-multibyte-buffer | |
414 | (insert (if charset | |
415 | (mm-decode-string source charset) | |
416 | source)) | |
417 | (apply func args) | |
418 | (buffer-string))))) | |
419 | ||
420 | (defun mm-inline-text-html (handle) | |
2526f423 | 421 | (let* ((func mm-text-html-renderer) |
23f87bed | 422 | (entry (assq func mm-text-html-renderer-alist)) |
3d2440b4 | 423 | (inhibit-read-only t)) |
23f87bed MB |
424 | (if entry |
425 | (setq func (cdr entry))) | |
426 | (cond | |
427 | ((functionp func) | |
428 | (funcall func handle)) | |
c113de23 | 429 | (t |
23f87bed MB |
430 | (apply (car func) handle (cdr func)))))) |
431 | ||
432 | (defun mm-inline-text-vcard (handle) | |
3d2440b4 | 433 | (let ((inhibit-read-only t)) |
23f87bed MB |
434 | (mm-insert-inline |
435 | handle | |
436 | (concat "\n-- \n" | |
437 | (ignore-errors | |
438 | (if (fboundp 'vcard-pretty-print) | |
439 | (vcard-pretty-print (mm-get-part handle)) | |
440 | (vcard-format-string | |
441 | (vcard-parse-string (mm-get-part handle) | |
442 | 'vcard-standard-filter)))))))) | |
443 | ||
444 | (defun mm-inline-text (handle) | |
445 | (let ((b (point)) | |
446 | (type (mm-handle-media-subtype handle)) | |
447 | (charset (mail-content-type-get | |
448 | (mm-handle-type handle) 'charset)) | |
3d2440b4 | 449 | (inhibit-read-only t)) |
23f87bed MB |
450 | (if (or (eq charset 'gnus-decoded) |
451 | ;; This is probably not entirely correct, but | |
452 | ;; makes rfc822 parts with embedded multiparts work. | |
453 | (eq mail-parse-charset 'gnus-decoded)) | |
c113de23 | 454 | (save-restriction |
23f87bed MB |
455 | (narrow-to-region (point) (point)) |
456 | (mm-insert-part handle) | |
457 | (goto-char (point-max))) | |
458 | (insert (mm-decode-string (mm-get-part handle) charset))) | |
5f4264e5 MB |
459 | (when (and mm-fill-flowed |
460 | (equal type "plain") | |
23f87bed MB |
461 | (equal (cdr (assoc 'format (mm-handle-type handle))) |
462 | "flowed")) | |
463 | (save-restriction | |
464 | (narrow-to-region b (point)) | |
465 | (goto-char b) | |
01c52d31 MB |
466 | (fill-flowed nil (equal (cdr (assoc 'delsp (mm-handle-type handle))) |
467 | "yes")) | |
23f87bed MB |
468 | (goto-char (point-max)))) |
469 | (save-restriction | |
470 | (narrow-to-region b (point)) | |
3d2440b4 SM |
471 | (when (member type '("enriched" "richtext")) |
472 | (set-text-properties (point-min) (point-max) nil) | |
23f87bed MB |
473 | (ignore-errors |
474 | (enriched-decode (point-min) (point-max)))) | |
475 | (mm-handle-set-undisplayer | |
476 | handle | |
477 | `(lambda () | |
3d2440b4 | 478 | (let ((inhibit-read-only t)) |
23f87bed MB |
479 | (delete-region ,(point-min-marker) |
480 | ,(point-max-marker)))))))) | |
c113de23 GM |
481 | |
482 | (defun mm-insert-inline (handle text) | |
483 | "Insert TEXT inline from HANDLE." | |
23f87bed | 484 | (let ((b (point))) |
c113de23 | 485 | (insert text) |
01c52d31 MB |
486 | (unless (bolp) |
487 | (insert "\n")) | |
c113de23 GM |
488 | (mm-handle-set-undisplayer |
489 | handle | |
490 | `(lambda () | |
3d2440b4 SM |
491 | (let ((inhibit-read-only t)) |
492 | (delete-region ,(copy-marker b) | |
493 | ,(copy-marker (point)))))))) | |
c113de23 GM |
494 | |
495 | (defun mm-inline-audio (handle) | |
496 | (message "Not implemented")) | |
497 | ||
498 | (defun mm-view-sound-file () | |
499 | (message "Not implemented")) | |
500 | ||
501 | (defun mm-w3-prepare-buffer () | |
502 | (require 'w3) | |
6833e8ba | 503 | (let ((url-standalone-mode t) |
23f87bed MB |
504 | (url-gateway-unplugged t) |
505 | (w3-honor-stylesheets nil)) | |
c113de23 GM |
506 | (w3-prepare-buffer))) |
507 | ||
508 | (defun mm-view-message () | |
509 | (mm-enable-multibyte) | |
510 | (let (handles) | |
511 | (let (gnus-article-mime-handles) | |
512 | ;; Double decode problem may happen. See mm-inline-message. | |
513 | (run-hooks 'gnus-article-decode-hook) | |
514 | (gnus-article-prepare-display) | |
515 | (setq handles gnus-article-mime-handles)) | |
516 | (when handles | |
517 | (setq gnus-article-mime-handles | |
23f87bed | 518 | (mm-merge-handles gnus-article-mime-handles handles)))) |
c113de23 GM |
519 | (fundamental-mode) |
520 | (goto-char (point-min))) | |
521 | ||
522 | (defun mm-inline-message (handle) | |
523 | (let ((b (point)) | |
4e728580 | 524 | (bolp (bolp)) |
c113de23 GM |
525 | (charset (mail-content-type-get |
526 | (mm-handle-type handle) 'charset)) | |
527 | gnus-displaying-mime handles) | |
528 | (when (and charset | |
529 | (stringp charset)) | |
530 | (setq charset (intern (downcase charset))) | |
531 | (when (eq charset 'us-ascii) | |
532 | (setq charset nil))) | |
533 | (save-excursion | |
534 | (save-restriction | |
535 | (narrow-to-region b b) | |
536 | (mm-insert-part handle) | |
537 | (let (gnus-article-mime-handles | |
4e728580 SZ |
538 | ;; disable prepare hook |
539 | gnus-article-prepare-hook | |
c113de23 | 540 | (gnus-newsgroup-charset |
34128042 MB |
541 | (unless (eq charset 'gnus-decoded) ;; mm-uu might set it. |
542 | (or charset gnus-newsgroup-charset)))) | |
23f87bed MB |
543 | (let ((gnus-original-article-buffer (mm-handle-buffer handle))) |
544 | (run-hooks 'gnus-article-decode-hook)) | |
c113de23 GM |
545 | (gnus-article-prepare-display) |
546 | (setq handles gnus-article-mime-handles)) | |
4e728580 SZ |
547 | (goto-char (point-min)) |
548 | (unless bolp | |
549 | (insert "\n")) | |
c113de23 GM |
550 | (goto-char (point-max)) |
551 | (unless (bolp) | |
552 | (insert "\n")) | |
553 | (insert "----------\n\n") | |
554 | (when handles | |
555 | (setq gnus-article-mime-handles | |
23f87bed | 556 | (mm-merge-handles gnus-article-mime-handles handles))) |
c113de23 GM |
557 | (mm-handle-set-undisplayer |
558 | handle | |
559 | `(lambda () | |
3d2440b4 | 560 | (let ((inhibit-read-only t)) |
722a8409 | 561 | (if (fboundp 'remove-specifier) |
c113de23 | 562 | ;; This is only valid on XEmacs. |
3d2440b4 SM |
563 | (dolist (prop '(background background-pixmap foreground)) |
564 | (remove-specifier | |
565 | (face-property 'default prop) (current-buffer)))) | |
c113de23 GM |
566 | (delete-region ,(point-min-marker) ,(point-max-marker))))))))) |
567 | ||
ce9401f3 | 568 | (defun mm-display-inline-fontify (handle mode) |
01c52d31 MB |
569 | (let ((charset (mail-content-type-get (mm-handle-type handle) 'charset)) |
570 | text coding-system) | |
571 | (unless (eq charset 'gnus-decoded) | |
572 | (mm-with-unibyte-buffer | |
573 | (mm-insert-part handle) | |
574 | (mm-decompress-buffer | |
575 | (or (mail-content-type-get (mm-handle-disposition handle) 'name) | |
576 | (mail-content-type-get (mm-handle-disposition handle) 'filename)) | |
577 | t t) | |
578 | (unless charset | |
579 | (setq coding-system (mm-find-buffer-file-coding-system))) | |
580 | (setq text (buffer-string)))) | |
23f87bed MB |
581 | ;; XEmacs @#$@ version of font-lock refuses to fully turn itself |
582 | ;; on for buffers whose name begins with " ". That's why we use | |
01c52d31 MB |
583 | ;; `with-current-buffer'/`generate-new-buffer' rather than |
584 | ;; `with-temp-buffer'. | |
585 | (with-current-buffer (generate-new-buffer "*fontification*") | |
586 | (buffer-disable-undo) | |
587 | (mm-enable-multibyte) | |
588 | (insert (cond ((eq charset 'gnus-decoded) | |
589 | (with-current-buffer (mm-handle-buffer handle) | |
590 | (buffer-string))) | |
591 | (coding-system | |
592 | (mm-decode-coding-string text coding-system)) | |
593 | (charset | |
594 | (mm-decode-string text charset)) | |
595 | (t | |
596 | text))) | |
597 | (require 'font-lock) | |
598 | (let ((font-lock-maximum-size nil) | |
599 | ;; Disable support modes, e.g., jit-lock, lazy-lock, etc. | |
600 | (font-lock-mode-hook nil) | |
601 | (font-lock-support-mode nil) | |
602 | ;; I find font-lock a bit too verbose. | |
603 | (font-lock-verbose nil)) | |
604 | (funcall mode) | |
605 | ;; The mode function might have already turned on font-lock. | |
606 | (unless (symbol-value 'font-lock-mode) | |
607 | (font-lock-fontify-buffer))) | |
608 | ;; By default, XEmacs font-lock uses non-duplicable text | |
609 | ;; properties. This code forces all the text properties | |
610 | ;; to be copied along with the text. | |
9efa445f | 611 | (when (featurep 'xemacs) |
01c52d31 MB |
612 | (map-extents (lambda (ext ignored) |
613 | (set-extent-property ext 'duplicable t) | |
614 | nil) | |
615 | nil nil nil nil nil 'text-prop)) | |
616 | (setq text (buffer-string)) | |
617 | (kill-buffer (current-buffer))) | |
c113de23 GM |
618 | (mm-insert-inline handle text))) |
619 | ||
23f87bed MB |
620 | ;; Shouldn't these functions check whether the user even wants to use |
621 | ;; font-lock? At least under XEmacs, this fontification is pretty | |
622 | ;; much unconditional. Also, it would be nice to change for the size | |
623 | ;; of the fontified region. | |
624 | ||
ce9401f3 DL |
625 | (defun mm-display-patch-inline (handle) |
626 | (mm-display-inline-fontify handle 'diff-mode)) | |
627 | ||
628 | (defun mm-display-elisp-inline (handle) | |
629 | (mm-display-inline-fontify handle 'emacs-lisp-mode)) | |
630 | ||
01c52d31 MB |
631 | (defun mm-display-dns-inline (handle) |
632 | (mm-display-inline-fontify handle 'dns-mode)) | |
633 | ||
6e3165fb JD |
634 | (defun mm-display-org-inline (handle) |
635 | "Show an Org mode text from HANDLE inline." | |
636 | (mm-display-inline-fontify handle 'org-mode)) | |
637 | ||
638 | (defun mm-display-shell-script-inline (handle) | |
008cad90 | 639 | "Show a shell script from HANDLE inline." |
6e3165fb JD |
640 | (mm-display-inline-fontify handle 'shell-script-mode)) |
641 | ||
008cad90 G |
642 | (defun mm-display-javascript-inline (handle) |
643 | "Show JavsScript code from HANDLE inline." | |
644 | (mm-display-inline-fontify handle 'javascript-mode)) | |
645 | ||
23f87bed MB |
646 | ;; id-signedData OBJECT IDENTIFIER ::= { iso(1) member-body(2) |
647 | ;; us(840) rsadsi(113549) pkcs(1) pkcs7(7) 2 } | |
648 | (defvar mm-pkcs7-signed-magic | |
e52cac88 MB |
649 | "\x30\x5c\x28\x80\x5c\x7c\x81\x2e\x5c\x7c\x82\x2e\x2e\x5c\x7c\x83\x2e\x2e\ |
650 | \x2e\x5c\x29\x06\x09\x5c\x2a\x86\x48\x86\xf7\x0d\x01\x07\x02") | |
23f87bed MB |
651 | |
652 | ;; id-envelopedData OBJECT IDENTIFIER ::= { iso(1) member-body(2) | |
653 | ;; us(840) rsadsi(113549) pkcs(1) pkcs7(7) 3 } | |
654 | (defvar mm-pkcs7-enveloped-magic | |
e52cac88 MB |
655 | "\x30\x5c\x28\x80\x5c\x7c\x81\x2e\x5c\x7c\x82\x2e\x2e\x5c\x7c\x83\x2e\x2e\ |
656 | \x2e\x5c\x29\x06\x09\x5c\x2a\x86\x48\x86\xf7\x0d\x01\x07\x03") | |
23f87bed MB |
657 | |
658 | (defun mm-view-pkcs7-get-type (handle) | |
659 | (mm-with-unibyte-buffer | |
660 | (mm-insert-part handle) | |
661 | (cond ((looking-at mm-pkcs7-enveloped-magic) | |
662 | 'enveloped) | |
663 | ((looking-at mm-pkcs7-signed-magic) | |
664 | 'signed) | |
665 | (t | |
666 | (error "Could not identify PKCS#7 type"))))) | |
667 | ||
b0feab7d | 668 | (defun mm-view-pkcs7 (handle &optional from) |
23f87bed | 669 | (case (mm-view-pkcs7-get-type handle) |
b0feab7d | 670 | (enveloped (mm-view-pkcs7-decrypt handle from)) |
23f87bed MB |
671 | (signed (mm-view-pkcs7-verify handle)) |
672 | (otherwise (error "Unknown or unimplemented PKCS#7 type")))) | |
673 | ||
674 | (defun mm-view-pkcs7-verify (handle) | |
01c52d31 MB |
675 | (let ((verified nil)) |
676 | (with-temp-buffer | |
677 | (insert "MIME-Version: 1.0\n") | |
678 | (mm-insert-headers "application/pkcs7-mime" "base64" "smime.p7m") | |
679 | (insert-buffer-substring (mm-handle-buffer handle)) | |
680 | (setq verified (smime-verify-region (point-min) (point-max)))) | |
681 | (goto-char (point-min)) | |
682 | (mm-insert-part handle) | |
683 | (if (search-forward "Content-Type: " nil t) | |
684 | (delete-region (point-min) (match-beginning 0))) | |
685 | (goto-char (point-max)) | |
686 | (if (re-search-backward "--\r?\n?" nil t) | |
687 | (delete-region (match-end 0) (point-max))) | |
688 | (unless verified | |
689 | (insert-buffer-substring smime-details-buffer))) | |
23f87bed MB |
690 | (goto-char (point-min)) |
691 | (while (search-forward "\r\n" nil t) | |
692 | (replace-match "\n")) | |
23f87bed MB |
693 | t) |
694 | ||
b0feab7d | 695 | (defun mm-view-pkcs7-decrypt (handle &optional from) |
23f87bed MB |
696 | (insert-buffer-substring (mm-handle-buffer handle)) |
697 | (goto-char (point-min)) | |
bb7f5cbc G |
698 | (if (eq mml-smime-use 'epg) |
699 | ;; Use EPG/gpgsm | |
700 | (let ((part (base64-decode-string (buffer-string)))) | |
701 | (erase-buffer) | |
702 | (insert (epg-decrypt-string (epg-make-context 'CMS) part))) | |
703 | ;; Use openssl | |
704 | (insert "MIME-Version: 1.0\n") | |
705 | (mm-insert-headers "application/pkcs7-mime" "base64" "smime.p7m") | |
706 | (smime-decrypt-region | |
707 | (point-min) (point-max) | |
708 | (if (= (length smime-keys) 1) | |
709 | (cadar smime-keys) | |
710 | (smime-get-key-by-email | |
711 | (gnus-completing-read | |
712 | "Decipher using key" | |
713 | smime-keys nil nil nil (car-safe (car-safe smime-keys))))) | |
714 | from)) | |
23f87bed MB |
715 | (goto-char (point-min)) |
716 | (while (search-forward "\r\n" nil t) | |
717 | (replace-match "\n")) | |
718 | (goto-char (point-min))) | |
719 | ||
c113de23 GM |
720 | (provide 'mm-view) |
721 | ||
715a2ca2 | 722 | ;;; mm-view.el ends here |