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715a2ca2 | 1 | ;;; mm-view.el --- functions for viewing MIME objects |
e84b4b86 | 2 | |
8abf1b22 | 3 | ;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, |
bb7f5cbc | 4 | ;; 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
c113de23 GM |
5 | |
6 | ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> | |
7 | ;; This file is part of GNU Emacs. | |
8 | ||
5e809f55 | 9 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
c113de23 | 10 | ;; it under the terms of the GNU General Public License as published by |
5e809f55 GM |
11 | ;; the Free Software Foundation, either version 3 of the License, or |
12 | ;; (at your option) any later version. | |
c113de23 GM |
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 | |
5e809f55 | 16 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
c113de23 GM |
17 | ;; GNU General Public License for more details. |
18 | ||
19 | ;; You should have received a copy of the GNU General Public License | |
5e809f55 | 20 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
c113de23 GM |
21 | |
22 | ;;; Commentary: | |
23 | ||
24 | ;;; Code: | |
f0b7f5a8 KY |
25 | |
26 | ;; For Emacs <22.2 and XEmacs. | |
49ad38a1 GM |
27 | (eval-and-compile |
28 | (unless (fboundp 'declare-function) (defmacro declare-function (&rest r)))) | |
c113de23 GM |
29 | (eval-when-compile (require 'cl)) |
30 | (require 'mail-parse) | |
31 | (require 'mailcap) | |
32 | (require 'mm-bodies) | |
33 | (require 'mm-decode) | |
01c52d31 | 34 | (require 'smime) |
bb7f5cbc | 35 | (require 'mml-smime) |
c113de23 | 36 | |
229b59da | 37 | (autoload 'gnus-completing-read "gnus-util") |
a41c2e6d | 38 | (autoload 'gnus-window-inside-pixel-edges "gnus-ems") |
8abf1b22 GM |
39 | (autoload 'gnus-article-prepare-display "gnus-art") |
40 | (autoload 'vcard-parse-string "vcard") | |
41 | (autoload 'vcard-format-string "vcard") | |
42 | (autoload 'fill-flowed "flow-fill") | |
43 | (autoload 'html2text "html2text" nil t) | |
c113de23 | 44 | |
dd3eac76 JB |
45 | (defvar gnus-article-mime-handles) |
46 | (defvar gnus-newsgroup-charset) | |
47 | (defvar smime-keys) | |
48 | (defvar w3m-cid-retrieve-function-alist) | |
49 | (defvar w3m-current-buffer) | |
50 | (defvar w3m-display-inline-images) | |
51 | (defvar w3m-minor-mode-map) | |
52 | ||
23f87bed | 53 | (defvar mm-text-html-renderer-alist |
2526f423 G |
54 | '((shr . mm-shr) |
55 | (w3 . mm-inline-text-html-render-with-w3) | |
23f87bed | 56 | (w3m . mm-inline-text-html-render-with-w3m) |
73043f7d | 57 | (w3m-standalone . mm-inline-text-html-render-with-w3m-standalone) |
2526f423 | 58 | (gnus-w3m . gnus-article-html) |
23f87bed MB |
59 | (links mm-inline-render-with-file |
60 | mm-links-remove-leading-blank | |
61 | "links" "-dump" file) | |
2526f423 G |
62 | (lynx mm-inline-render-with-stdin nil |
63 | "lynx" "-dump" "-force_html" "-stdin" "-nolist") | |
64 | (html2text mm-inline-render-with-function html2text)) | |
23f87bed MB |
65 | "The attributes of renderer types for text/html.") |
66 | ||
5f4264e5 | 67 | (defcustom mm-fill-flowed t |
01c52d31 | 68 | "If non-nil a format=flowed article will be displayed flowed." |
5f4264e5 MB |
69 | :type 'boolean |
70 | :version "22.1" | |
71 | :group 'mime-display) | |
72 | ||
a41c2e6d G |
73 | (defcustom mm-inline-large-images-proportion 0.9 |
74 | "Maximum proportion of large image resized when | |
75 | `mm-inline-large-images' is set to resize." | |
76 | :type 'float | |
77 | :version "24.1" | |
78 | :group 'mime-display) | |
79 | ||
23f87bed MB |
80 | ;;; Internal variables. |
81 | ||
c113de23 GM |
82 | ;;; |
83 | ;;; Functions for displaying various formats inline | |
84 | ;;; | |
23f87bed | 85 | |
c36dea19 GM |
86 | (autoload 'gnus-rescale-image "gnus-util") |
87 | ||
c113de23 GM |
88 | (defun mm-inline-image-emacs (handle) |
89 | (let ((b (point-marker)) | |
3d2440b4 | 90 | (inhibit-read-only t)) |
a41c2e6d G |
91 | (put-image |
92 | (let ((image (mm-get-image handle))) | |
93 | (if (eq mm-inline-large-images 'resize) | |
94 | (gnus-rescale-image image | |
95 | (let ((edges (gnus-window-inside-pixel-edges | |
96 | (get-buffer-window (current-buffer))))) | |
97 | (cons (truncate (* mm-inline-large-images-proportion | |
98 | (- (nth 2 edges) (nth 0 edges)))) | |
99 | (truncate (* mm-inline-large-images-proportion | |
100 | (- (nth 3 edges) (nth 1 edges))))))) | |
101 | image)) | |
102 | b) | |
23f87bed | 103 | (insert "\n\n") |
c113de23 GM |
104 | (mm-handle-set-undisplayer |
105 | handle | |
23f87bed MB |
106 | `(lambda () |
107 | (let ((b ,b) | |
3d2440b4 | 108 | (inhibit-read-only t)) |
23f87bed MB |
109 | (remove-images b b) |
110 | (delete-region b (+ b 2))))))) | |
c113de23 GM |
111 | |
112 | (defun mm-inline-image-xemacs (handle) | |
9efa445f DN |
113 | (when (featurep 'xemacs) |
114 | (insert "\n\n") | |
115 | (forward-char -2) | |
116 | (let ((annot (make-annotation (mm-get-image handle) nil 'text)) | |
3d2440b4 | 117 | (inhibit-read-only t)) |
9efa445f DN |
118 | (mm-handle-set-undisplayer |
119 | handle | |
120 | `(lambda () | |
121 | (let ((b ,(point-marker)) | |
3d2440b4 | 122 | (inhibit-read-only t)) |
9efa445f DN |
123 | (delete-annotation ,annot) |
124 | (delete-region (- b 2) b)))) | |
125 | (set-extent-property annot 'mm t) | |
126 | (set-extent-property annot 'duplicable t)))) | |
c113de23 GM |
127 | |
128 | (eval-and-compile | |
722a8409 | 129 | (if (featurep 'xemacs) |
c113de23 GM |
130 | (defalias 'mm-inline-image 'mm-inline-image-xemacs) |
131 | (defalias 'mm-inline-image 'mm-inline-image-emacs))) | |
132 | ||
49ad38a1 GM |
133 | ;; External. |
134 | (declare-function w3-do-setup "ext:w3" ()) | |
135 | (declare-function w3-region "ext:w3-display" (st nd)) | |
136 | (declare-function w3-prepare-buffer "ext:w3-display" (&rest args)) | |
137 | ||
c113de23 GM |
138 | (defvar mm-w3-setup nil) |
139 | (defun mm-setup-w3 () | |
140 | (unless mm-w3-setup | |
141 | (require 'w3) | |
142 | (w3-do-setup) | |
143 | (require 'url) | |
144 | (require 'w3-vars) | |
145 | (require 'url-vars) | |
146 | (setq mm-w3-setup t))) | |
147 | ||
23f87bed MB |
148 | (defun mm-inline-text-html-render-with-w3 (handle) |
149 | (mm-setup-w3) | |
150 | (let ((text (mm-get-part handle)) | |
151 | (b (point)) | |
152 | (url-standalone-mode t) | |
153 | (url-gateway-unplugged t) | |
154 | (w3-honor-stylesheets nil) | |
155 | (url-current-object | |
156 | (url-generic-parse-url (format "cid:%s" (mm-handle-id handle)))) | |
157 | (width (window-width)) | |
158 | (charset (mail-content-type-get | |
159 | (mm-handle-type handle) 'charset))) | |
160 | (save-excursion | |
01c52d31 | 161 | (insert (if charset (mm-decode-string text charset) text)) |
23f87bed MB |
162 | (save-restriction |
163 | (narrow-to-region b (point)) | |
01c52d31 MB |
164 | (unless charset |
165 | (goto-char (point-min)) | |
166 | (when (or (and (boundp 'w3-meta-content-type-charset-regexp) | |
167 | (re-search-forward | |
168 | w3-meta-content-type-charset-regexp nil t)) | |
169 | (and (boundp 'w3-meta-charset-content-type-regexp) | |
170 | (re-search-forward | |
171 | w3-meta-charset-content-type-regexp nil t))) | |
23f87bed | 172 | (setq charset |
01c52d31 MB |
173 | (let ((bsubstr (buffer-substring-no-properties |
174 | (match-beginning 2) | |
175 | (match-end 2)))) | |
176 | (if (fboundp 'w3-coding-system-for-mime-charset) | |
177 | (w3-coding-system-for-mime-charset bsubstr) | |
178 | (mm-charset-to-coding-system bsubstr)))) | |
179 | (delete-region (point-min) (point-max)) | |
180 | (insert (mm-decode-string text charset)))) | |
23f87bed | 181 | (save-window-excursion |
c113de23 | 182 | (save-restriction |
23f87bed MB |
183 | (let ((w3-strict-width width) |
184 | ;; Don't let w3 set the global version of | |
185 | ;; this variable. | |
186 | (fill-column fill-column)) | |
187 | (if (or debug-on-error debug-on-quit) | |
188 | (w3-region (point-min) (point-max)) | |
189 | (condition-case () | |
190 | (w3-region (point-min) (point-max)) | |
191 | (error | |
192 | (delete-region (point-min) (point-max)) | |
193 | (let ((b (point)) | |
194 | (charset (mail-content-type-get | |
195 | (mm-handle-type handle) 'charset))) | |
196 | (if (or (eq charset 'gnus-decoded) | |
197 | (eq mail-parse-charset 'gnus-decoded)) | |
198 | (save-restriction | |
199 | (narrow-to-region (point) (point)) | |
200 | (mm-insert-part handle) | |
201 | (goto-char (point-max))) | |
202 | (insert (mm-decode-string (mm-get-part handle) | |
203 | charset)))) | |
204 | (message | |
205 | "Error while rendering html; showing as text/plain"))))))) | |
206 | (mm-handle-set-undisplayer | |
207 | handle | |
208 | `(lambda () | |
3d2440b4 | 209 | (let ((inhibit-read-only t)) |
01c52d31 | 210 | ,@(if (functionp 'remove-specifier) |
3d2440b4 SM |
211 | '((dolist (prop '(background background-pixmap foreground)) |
212 | (remove-specifier | |
213 | (face-property 'default prop) | |
214 | (current-buffer))))) | |
23f87bed MB |
215 | (delete-region ,(point-min-marker) |
216 | ,(point-max-marker))))))))) | |
217 | ||
218 | (defvar mm-w3m-setup nil | |
219 | "Whether gnus-article-mode has been setup to use emacs-w3m.") | |
220 | ||
49ad38a1 GM |
221 | ;; External. |
222 | (declare-function w3m-detect-meta-charset "ext:w3m" ()) | |
223 | (declare-function w3m-region "ext:w3m" (start end &optional url charset)) | |
224 | ||
23f87bed MB |
225 | (defun mm-setup-w3m () |
226 | "Setup gnus-article-mode to use emacs-w3m." | |
227 | (unless mm-w3m-setup | |
228 | (require 'w3m) | |
229 | (unless (assq 'gnus-article-mode w3m-cid-retrieve-function-alist) | |
230 | (push (cons 'gnus-article-mode 'mm-w3m-cid-retrieve) | |
231 | w3m-cid-retrieve-function-alist)) | |
232 | (setq mm-w3m-setup t)) | |
233 | (setq w3m-display-inline-images mm-inline-text-html-with-images)) | |
234 | ||
235 | (defun mm-w3m-cid-retrieve-1 (url handle) | |
54506618 | 236 | (dolist (elem handle) |
fe62aacc MB |
237 | (when (consp elem) |
238 | (when (equal url (mm-handle-id elem)) | |
239 | (mm-insert-part elem) | |
240 | (throw 'found-handle (mm-handle-media-type elem))) | |
241 | (when (and (stringp (car elem)) | |
242 | (equal "multipart" (mm-handle-media-supertype elem))) | |
243 | (mm-w3m-cid-retrieve-1 url elem))))) | |
23f87bed MB |
244 | |
245 | (defun mm-w3m-cid-retrieve (url &rest args) | |
246 | "Insert a content pointed by URL if it has the cid: scheme." | |
247 | (when (string-match "\\`cid:" url) | |
fe62aacc MB |
248 | (or (catch 'found-handle |
249 | (mm-w3m-cid-retrieve-1 | |
250 | (setq url (concat "<" (substring url (match-end 0)) ">")) | |
251 | (with-current-buffer w3m-current-buffer | |
252 | gnus-article-mime-handles))) | |
253 | (prog1 | |
254 | nil | |
255 | (message "Failed to find \"Content-ID: %s\"" url))))) | |
23f87bed MB |
256 | |
257 | (defun mm-inline-text-html-render-with-w3m (handle) | |
258 | "Render a text/html part using emacs-w3m." | |
259 | (mm-setup-w3m) | |
260 | (let ((text (mm-get-part handle)) | |
261 | (b (point)) | |
6b554e88 MB |
262 | (charset (or (mail-content-type-get (mm-handle-type handle) 'charset) |
263 | mail-parse-charset))) | |
23f87bed MB |
264 | (save-excursion |
265 | (insert (if charset (mm-decode-string text charset) text)) | |
266 | (save-restriction | |
267 | (narrow-to-region b (point)) | |
268 | (unless charset | |
269 | (goto-char (point-min)) | |
270 | (when (setq charset (w3m-detect-meta-charset)) | |
c113de23 | 271 | (delete-region (point-min) (point-max)) |
23f87bed MB |
272 | (insert (mm-decode-string text charset)))) |
273 | (let ((w3m-safe-url-regexp mm-w3m-safe-url-regexp) | |
274 | w3m-force-redisplay) | |
275 | (w3m-region (point-min) (point-max) nil charset)) | |
1250af7b KY |
276 | ;; Put the mark meaning this part was rendered by emacs-w3m. |
277 | (put-text-property (point-min) (point-max) | |
278 | 'mm-inline-text-html-with-w3m t) | |
23f87bed MB |
279 | (when (and mm-inline-text-html-with-w3m-keymap |
280 | (boundp 'w3m-minor-mode-map) | |
281 | w3m-minor-mode-map) | |
886367d8 KY |
282 | (if (and (boundp 'w3m-link-map) |
283 | w3m-link-map) | |
1250af7b KY |
284 | (let* ((start (point-min)) |
285 | (end (point-max)) | |
286 | (on (get-text-property start 'w3m-href-anchor)) | |
287 | (map (copy-keymap w3m-link-map)) | |
288 | next) | |
886367d8 | 289 | (set-keymap-parent map w3m-minor-mode-map) |
1250af7b KY |
290 | (while (< start end) |
291 | (if on | |
292 | (progn | |
293 | (setq next (or (text-property-any start end | |
294 | 'w3m-href-anchor nil) | |
295 | end)) | |
296 | (put-text-property start next 'keymap map)) | |
297 | (setq next (or (text-property-not-all start end | |
298 | 'w3m-href-anchor nil) | |
299 | end)) | |
300 | (put-text-property start next 'keymap w3m-minor-mode-map)) | |
301 | (setq start next | |
302 | on (not on)))) | |
303 | (put-text-property (point-min) (point-max) | |
304 | 'keymap w3m-minor-mode-map))) | |
58090a8d MB |
305 | (mm-handle-set-undisplayer |
306 | handle | |
307 | `(lambda () | |
01c52d31 | 308 | (let ((inhibit-read-only t)) |
58090a8d MB |
309 | (delete-region ,(point-min-marker) |
310 | ,(point-max-marker))))))))) | |
23f87bed | 311 | |
7347faa8 MB |
312 | (defvar mm-w3m-standalone-supports-m17n-p (if (featurep 'mule) 'undecided) |
313 | "*T means the w3m command supports the m17n feature.") | |
314 | ||
315 | (defun mm-w3m-standalone-supports-m17n-p () | |
316 | "Say whether the w3m command supports the m17n feature." | |
317 | (cond ((eq mm-w3m-standalone-supports-m17n-p t) t) | |
318 | ((eq mm-w3m-standalone-supports-m17n-p nil) nil) | |
319 | ((not (featurep 'mule)) (setq mm-w3m-standalone-supports-m17n-p nil)) | |
320 | ((condition-case nil | |
321 | (let ((coding-system-for-write 'iso-2022-jp) | |
322 | (coding-system-for-read 'iso-2022-jp) | |
323 | (str (mm-decode-coding-string "\ | |
8f7abae3 | 324 | \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 |
325 | (mm-with-multibyte-buffer |
326 | (insert str) | |
327 | (call-process-region | |
328 | (point-min) (point-max) "w3m" t t nil "-dump" | |
329 | "-T" "text/html" "-I" "iso-2022-jp" "-O" "iso-2022-jp") | |
330 | (goto-char (point-min)) | |
331 | (search-forward str nil t))) | |
332 | (error nil)) | |
333 | (setq mm-w3m-standalone-supports-m17n-p t)) | |
334 | (t | |
335 | ;;(message "You had better upgrade your w3m command") | |
336 | (setq mm-w3m-standalone-supports-m17n-p nil)))) | |
337 | ||
73043f7d MB |
338 | (defun mm-inline-text-html-render-with-w3m-standalone (handle) |
339 | "Render a text/html part using w3m." | |
7347faa8 MB |
340 | (if (mm-w3m-standalone-supports-m17n-p) |
341 | (let ((source (mm-get-part handle)) | |
6b554e88 MB |
342 | (charset (or (mail-content-type-get (mm-handle-type handle) |
343 | 'charset) | |
344 | (symbol-name mail-parse-charset))) | |
7347faa8 MB |
345 | cs) |
346 | (unless (and charset | |
347 | (setq cs (mm-charset-to-coding-system charset)) | |
348 | (not (eq cs 'ascii))) | |
349 | ;; The default. | |
350 | (setq charset "iso-8859-1" | |
351 | cs 'iso-8859-1)) | |
352 | (mm-insert-inline | |
353 | handle | |
354 | (mm-with-unibyte-buffer | |
355 | (insert source) | |
356 | (mm-enable-multibyte) | |
357 | (let ((coding-system-for-write 'binary) | |
358 | (coding-system-for-read cs)) | |
359 | (call-process-region | |
360 | (point-min) (point-max) | |
361 | "w3m" t t nil "-dump" "-T" "text/html" | |
362 | "-I" charset "-O" charset)) | |
363 | (buffer-string)))) | |
364 | (mm-inline-render-with-stdin handle nil "w3m" "-dump" "-T" "text/html"))) | |
73043f7d | 365 | |
23f87bed MB |
366 | (defun mm-links-remove-leading-blank () |
367 | ;; Delete the annoying three spaces preceding each line of links | |
368 | ;; output. | |
369 | (goto-char (point-min)) | |
370 | (while (re-search-forward "^ " nil t) | |
371 | (delete-region (match-beginning 0) (match-end 0)))) | |
372 | ||
373 | (defun mm-inline-wash-with-file (post-func cmd &rest args) | |
374 | (let ((file (mm-make-temp-file | |
375 | (expand-file-name "mm" mm-tmp-directory)))) | |
376 | (let ((coding-system-for-write 'binary)) | |
377 | (write-region (point-min) (point-max) file nil 'silent)) | |
378 | (delete-region (point-min) (point-max)) | |
379 | (unwind-protect | |
380 | (apply 'call-process cmd nil t nil (mapcar 'eval args)) | |
381 | (delete-file file)) | |
382 | (and post-func (funcall post-func)))) | |
383 | ||
384 | (defun mm-inline-wash-with-stdin (post-func cmd &rest args) | |
385 | (let ((coding-system-for-write 'binary)) | |
386 | (apply 'call-process-region (point-min) (point-max) | |
387 | cmd t t nil args)) | |
388 | (and post-func (funcall post-func))) | |
389 | ||
390 | (defun mm-inline-render-with-file (handle post-func cmd &rest args) | |
391 | (let ((source (mm-get-part handle))) | |
392 | (mm-insert-inline | |
393 | handle | |
394 | (mm-with-unibyte-buffer | |
395 | (insert source) | |
396 | (apply 'mm-inline-wash-with-file post-func cmd args) | |
397 | (buffer-string))))) | |
398 | ||
399 | (defun mm-inline-render-with-stdin (handle post-func cmd &rest args) | |
400 | (let ((source (mm-get-part handle))) | |
401 | (mm-insert-inline | |
402 | handle | |
403 | (mm-with-unibyte-buffer | |
404 | (insert source) | |
405 | (apply 'mm-inline-wash-with-stdin post-func cmd args) | |
406 | (buffer-string))))) | |
407 | ||
408 | (defun mm-inline-render-with-function (handle func &rest args) | |
409 | (let ((source (mm-get-part handle)) | |
6b554e88 MB |
410 | (charset (or (mail-content-type-get (mm-handle-type handle) 'charset) |
411 | mail-parse-charset))) | |
23f87bed MB |
412 | (mm-insert-inline |
413 | handle | |
414 | (mm-with-multibyte-buffer | |
415 | (insert (if charset | |
416 | (mm-decode-string source charset) | |
417 | source)) | |
418 | (apply func args) | |
419 | (buffer-string))))) | |
420 | ||
421 | (defun mm-inline-text-html (handle) | |
2526f423 | 422 | (let* ((func mm-text-html-renderer) |
23f87bed | 423 | (entry (assq func mm-text-html-renderer-alist)) |
3d2440b4 | 424 | (inhibit-read-only t)) |
23f87bed MB |
425 | (if entry |
426 | (setq func (cdr entry))) | |
427 | (cond | |
428 | ((functionp func) | |
429 | (funcall func handle)) | |
c113de23 | 430 | (t |
23f87bed MB |
431 | (apply (car func) handle (cdr func)))))) |
432 | ||
433 | (defun mm-inline-text-vcard (handle) | |
3d2440b4 | 434 | (let ((inhibit-read-only t)) |
23f87bed MB |
435 | (mm-insert-inline |
436 | handle | |
437 | (concat "\n-- \n" | |
438 | (ignore-errors | |
439 | (if (fboundp 'vcard-pretty-print) | |
440 | (vcard-pretty-print (mm-get-part handle)) | |
441 | (vcard-format-string | |
442 | (vcard-parse-string (mm-get-part handle) | |
443 | 'vcard-standard-filter)))))))) | |
444 | ||
445 | (defun mm-inline-text (handle) | |
446 | (let ((b (point)) | |
447 | (type (mm-handle-media-subtype handle)) | |
448 | (charset (mail-content-type-get | |
449 | (mm-handle-type handle) 'charset)) | |
3d2440b4 | 450 | (inhibit-read-only t)) |
23f87bed MB |
451 | (if (or (eq charset 'gnus-decoded) |
452 | ;; This is probably not entirely correct, but | |
453 | ;; makes rfc822 parts with embedded multiparts work. | |
454 | (eq mail-parse-charset 'gnus-decoded)) | |
c113de23 | 455 | (save-restriction |
23f87bed MB |
456 | (narrow-to-region (point) (point)) |
457 | (mm-insert-part handle) | |
458 | (goto-char (point-max))) | |
459 | (insert (mm-decode-string (mm-get-part handle) charset))) | |
5f4264e5 MB |
460 | (when (and mm-fill-flowed |
461 | (equal type "plain") | |
23f87bed MB |
462 | (equal (cdr (assoc 'format (mm-handle-type handle))) |
463 | "flowed")) | |
464 | (save-restriction | |
465 | (narrow-to-region b (point)) | |
466 | (goto-char b) | |
01c52d31 MB |
467 | (fill-flowed nil (equal (cdr (assoc 'delsp (mm-handle-type handle))) |
468 | "yes")) | |
23f87bed MB |
469 | (goto-char (point-max)))) |
470 | (save-restriction | |
471 | (narrow-to-region b (point)) | |
3d2440b4 SM |
472 | (when (member type '("enriched" "richtext")) |
473 | (set-text-properties (point-min) (point-max) nil) | |
23f87bed MB |
474 | (ignore-errors |
475 | (enriched-decode (point-min) (point-max)))) | |
476 | (mm-handle-set-undisplayer | |
477 | handle | |
478 | `(lambda () | |
3d2440b4 | 479 | (let ((inhibit-read-only t)) |
23f87bed MB |
480 | (delete-region ,(point-min-marker) |
481 | ,(point-max-marker)))))))) | |
c113de23 GM |
482 | |
483 | (defun mm-insert-inline (handle text) | |
484 | "Insert TEXT inline from HANDLE." | |
23f87bed | 485 | (let ((b (point))) |
c113de23 | 486 | (insert text) |
01c52d31 MB |
487 | (unless (bolp) |
488 | (insert "\n")) | |
c113de23 GM |
489 | (mm-handle-set-undisplayer |
490 | handle | |
491 | `(lambda () | |
3d2440b4 SM |
492 | (let ((inhibit-read-only t)) |
493 | (delete-region ,(copy-marker b) | |
494 | ,(copy-marker (point)))))))) | |
c113de23 GM |
495 | |
496 | (defun mm-inline-audio (handle) | |
497 | (message "Not implemented")) | |
498 | ||
499 | (defun mm-view-sound-file () | |
500 | (message "Not implemented")) | |
501 | ||
502 | (defun mm-w3-prepare-buffer () | |
503 | (require 'w3) | |
6833e8ba | 504 | (let ((url-standalone-mode t) |
23f87bed MB |
505 | (url-gateway-unplugged t) |
506 | (w3-honor-stylesheets nil)) | |
c113de23 GM |
507 | (w3-prepare-buffer))) |
508 | ||
509 | (defun mm-view-message () | |
510 | (mm-enable-multibyte) | |
511 | (let (handles) | |
512 | (let (gnus-article-mime-handles) | |
513 | ;; Double decode problem may happen. See mm-inline-message. | |
514 | (run-hooks 'gnus-article-decode-hook) | |
515 | (gnus-article-prepare-display) | |
516 | (setq handles gnus-article-mime-handles)) | |
517 | (when handles | |
518 | (setq gnus-article-mime-handles | |
23f87bed | 519 | (mm-merge-handles gnus-article-mime-handles handles)))) |
c113de23 GM |
520 | (fundamental-mode) |
521 | (goto-char (point-min))) | |
522 | ||
523 | (defun mm-inline-message (handle) | |
524 | (let ((b (point)) | |
4e728580 | 525 | (bolp (bolp)) |
c113de23 GM |
526 | (charset (mail-content-type-get |
527 | (mm-handle-type handle) 'charset)) | |
528 | gnus-displaying-mime handles) | |
529 | (when (and charset | |
530 | (stringp charset)) | |
531 | (setq charset (intern (downcase charset))) | |
532 | (when (eq charset 'us-ascii) | |
533 | (setq charset nil))) | |
534 | (save-excursion | |
535 | (save-restriction | |
536 | (narrow-to-region b b) | |
537 | (mm-insert-part handle) | |
538 | (let (gnus-article-mime-handles | |
4e728580 SZ |
539 | ;; disable prepare hook |
540 | gnus-article-prepare-hook | |
c113de23 | 541 | (gnus-newsgroup-charset |
34128042 MB |
542 | (unless (eq charset 'gnus-decoded) ;; mm-uu might set it. |
543 | (or charset gnus-newsgroup-charset)))) | |
23f87bed MB |
544 | (let ((gnus-original-article-buffer (mm-handle-buffer handle))) |
545 | (run-hooks 'gnus-article-decode-hook)) | |
c113de23 GM |
546 | (gnus-article-prepare-display) |
547 | (setq handles gnus-article-mime-handles)) | |
4e728580 SZ |
548 | (goto-char (point-min)) |
549 | (unless bolp | |
550 | (insert "\n")) | |
c113de23 GM |
551 | (goto-char (point-max)) |
552 | (unless (bolp) | |
553 | (insert "\n")) | |
554 | (insert "----------\n\n") | |
555 | (when handles | |
556 | (setq gnus-article-mime-handles | |
23f87bed | 557 | (mm-merge-handles gnus-article-mime-handles handles))) |
c113de23 GM |
558 | (mm-handle-set-undisplayer |
559 | handle | |
560 | `(lambda () | |
3d2440b4 | 561 | (let ((inhibit-read-only t)) |
722a8409 | 562 | (if (fboundp 'remove-specifier) |
c113de23 | 563 | ;; This is only valid on XEmacs. |
3d2440b4 SM |
564 | (dolist (prop '(background background-pixmap foreground)) |
565 | (remove-specifier | |
566 | (face-property 'default prop) (current-buffer)))) | |
c113de23 GM |
567 | (delete-region ,(point-min-marker) ,(point-max-marker))))))))) |
568 | ||
ce9401f3 | 569 | (defun mm-display-inline-fontify (handle mode) |
01c52d31 MB |
570 | (let ((charset (mail-content-type-get (mm-handle-type handle) 'charset)) |
571 | text coding-system) | |
572 | (unless (eq charset 'gnus-decoded) | |
573 | (mm-with-unibyte-buffer | |
574 | (mm-insert-part handle) | |
575 | (mm-decompress-buffer | |
576 | (or (mail-content-type-get (mm-handle-disposition handle) 'name) | |
577 | (mail-content-type-get (mm-handle-disposition handle) 'filename)) | |
578 | t t) | |
579 | (unless charset | |
580 | (setq coding-system (mm-find-buffer-file-coding-system))) | |
581 | (setq text (buffer-string)))) | |
23f87bed MB |
582 | ;; XEmacs @#$@ version of font-lock refuses to fully turn itself |
583 | ;; on for buffers whose name begins with " ". That's why we use | |
01c52d31 MB |
584 | ;; `with-current-buffer'/`generate-new-buffer' rather than |
585 | ;; `with-temp-buffer'. | |
586 | (with-current-buffer (generate-new-buffer "*fontification*") | |
587 | (buffer-disable-undo) | |
588 | (mm-enable-multibyte) | |
589 | (insert (cond ((eq charset 'gnus-decoded) | |
590 | (with-current-buffer (mm-handle-buffer handle) | |
591 | (buffer-string))) | |
592 | (coding-system | |
593 | (mm-decode-coding-string text coding-system)) | |
594 | (charset | |
595 | (mm-decode-string text charset)) | |
596 | (t | |
597 | text))) | |
598 | (require 'font-lock) | |
599 | (let ((font-lock-maximum-size nil) | |
600 | ;; Disable support modes, e.g., jit-lock, lazy-lock, etc. | |
601 | (font-lock-mode-hook nil) | |
602 | (font-lock-support-mode nil) | |
603 | ;; I find font-lock a bit too verbose. | |
604 | (font-lock-verbose nil)) | |
605 | (funcall mode) | |
606 | ;; The mode function might have already turned on font-lock. | |
607 | (unless (symbol-value 'font-lock-mode) | |
608 | (font-lock-fontify-buffer))) | |
609 | ;; By default, XEmacs font-lock uses non-duplicable text | |
610 | ;; properties. This code forces all the text properties | |
611 | ;; to be copied along with the text. | |
9efa445f | 612 | (when (featurep 'xemacs) |
01c52d31 MB |
613 | (map-extents (lambda (ext ignored) |
614 | (set-extent-property ext 'duplicable t) | |
615 | nil) | |
616 | nil nil nil nil nil 'text-prop)) | |
617 | (setq text (buffer-string)) | |
618 | (kill-buffer (current-buffer))) | |
c113de23 GM |
619 | (mm-insert-inline handle text))) |
620 | ||
23f87bed MB |
621 | ;; Shouldn't these functions check whether the user even wants to use |
622 | ;; font-lock? At least under XEmacs, this fontification is pretty | |
623 | ;; much unconditional. Also, it would be nice to change for the size | |
624 | ;; of the fontified region. | |
625 | ||
ce9401f3 DL |
626 | (defun mm-display-patch-inline (handle) |
627 | (mm-display-inline-fontify handle 'diff-mode)) | |
628 | ||
629 | (defun mm-display-elisp-inline (handle) | |
630 | (mm-display-inline-fontify handle 'emacs-lisp-mode)) | |
631 | ||
01c52d31 MB |
632 | (defun mm-display-dns-inline (handle) |
633 | (mm-display-inline-fontify handle 'dns-mode)) | |
634 | ||
6e3165fb JD |
635 | (defun mm-display-org-inline (handle) |
636 | "Show an Org mode text from HANDLE inline." | |
637 | (mm-display-inline-fontify handle 'org-mode)) | |
638 | ||
639 | (defun mm-display-shell-script-inline (handle) | |
640 | "Show an shell script from HANDLE inline." | |
641 | (mm-display-inline-fontify handle 'shell-script-mode)) | |
642 | ||
23f87bed MB |
643 | ;; id-signedData OBJECT IDENTIFIER ::= { iso(1) member-body(2) |
644 | ;; us(840) rsadsi(113549) pkcs(1) pkcs7(7) 2 } | |
645 | (defvar mm-pkcs7-signed-magic | |
e52cac88 MB |
646 | "\x30\x5c\x28\x80\x5c\x7c\x81\x2e\x5c\x7c\x82\x2e\x2e\x5c\x7c\x83\x2e\x2e\ |
647 | \x2e\x5c\x29\x06\x09\x5c\x2a\x86\x48\x86\xf7\x0d\x01\x07\x02") | |
23f87bed MB |
648 | |
649 | ;; id-envelopedData OBJECT IDENTIFIER ::= { iso(1) member-body(2) | |
650 | ;; us(840) rsadsi(113549) pkcs(1) pkcs7(7) 3 } | |
651 | (defvar mm-pkcs7-enveloped-magic | |
e52cac88 MB |
652 | "\x30\x5c\x28\x80\x5c\x7c\x81\x2e\x5c\x7c\x82\x2e\x2e\x5c\x7c\x83\x2e\x2e\ |
653 | \x2e\x5c\x29\x06\x09\x5c\x2a\x86\x48\x86\xf7\x0d\x01\x07\x03") | |
23f87bed MB |
654 | |
655 | (defun mm-view-pkcs7-get-type (handle) | |
656 | (mm-with-unibyte-buffer | |
657 | (mm-insert-part handle) | |
658 | (cond ((looking-at mm-pkcs7-enveloped-magic) | |
659 | 'enveloped) | |
660 | ((looking-at mm-pkcs7-signed-magic) | |
661 | 'signed) | |
662 | (t | |
663 | (error "Could not identify PKCS#7 type"))))) | |
664 | ||
b0feab7d | 665 | (defun mm-view-pkcs7 (handle &optional from) |
23f87bed | 666 | (case (mm-view-pkcs7-get-type handle) |
b0feab7d | 667 | (enveloped (mm-view-pkcs7-decrypt handle from)) |
23f87bed MB |
668 | (signed (mm-view-pkcs7-verify handle)) |
669 | (otherwise (error "Unknown or unimplemented PKCS#7 type")))) | |
670 | ||
671 | (defun mm-view-pkcs7-verify (handle) | |
01c52d31 MB |
672 | (let ((verified nil)) |
673 | (with-temp-buffer | |
674 | (insert "MIME-Version: 1.0\n") | |
675 | (mm-insert-headers "application/pkcs7-mime" "base64" "smime.p7m") | |
676 | (insert-buffer-substring (mm-handle-buffer handle)) | |
677 | (setq verified (smime-verify-region (point-min) (point-max)))) | |
678 | (goto-char (point-min)) | |
679 | (mm-insert-part handle) | |
680 | (if (search-forward "Content-Type: " nil t) | |
681 | (delete-region (point-min) (match-beginning 0))) | |
682 | (goto-char (point-max)) | |
683 | (if (re-search-backward "--\r?\n?" nil t) | |
684 | (delete-region (match-end 0) (point-max))) | |
685 | (unless verified | |
686 | (insert-buffer-substring smime-details-buffer))) | |
23f87bed MB |
687 | (goto-char (point-min)) |
688 | (while (search-forward "\r\n" nil t) | |
689 | (replace-match "\n")) | |
23f87bed MB |
690 | t) |
691 | ||
b0feab7d | 692 | (defun mm-view-pkcs7-decrypt (handle &optional from) |
23f87bed MB |
693 | (insert-buffer-substring (mm-handle-buffer handle)) |
694 | (goto-char (point-min)) | |
bb7f5cbc G |
695 | (if (eq mml-smime-use 'epg) |
696 | ;; Use EPG/gpgsm | |
697 | (let ((part (base64-decode-string (buffer-string)))) | |
698 | (erase-buffer) | |
699 | (insert (epg-decrypt-string (epg-make-context 'CMS) part))) | |
700 | ;; Use openssl | |
701 | (insert "MIME-Version: 1.0\n") | |
702 | (mm-insert-headers "application/pkcs7-mime" "base64" "smime.p7m") | |
703 | (smime-decrypt-region | |
704 | (point-min) (point-max) | |
705 | (if (= (length smime-keys) 1) | |
706 | (cadar smime-keys) | |
707 | (smime-get-key-by-email | |
708 | (gnus-completing-read | |
709 | "Decipher using key" | |
710 | smime-keys nil nil nil (car-safe (car-safe smime-keys))))) | |
711 | from)) | |
23f87bed MB |
712 | (goto-char (point-min)) |
713 | (while (search-forward "\r\n" nil t) | |
714 | (replace-match "\n")) | |
715 | (goto-char (point-min))) | |
716 | ||
c113de23 GM |
717 | (provide 'mm-view) |
718 | ||
715a2ca2 | 719 | ;;; mm-view.el ends here |