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bdcfe844 | 1 | ;;; mh-mime.el --- MH-E support for composing MIME messages |
c26cf6c8 | 2 | |
a1b4049d BW |
3 | ;; Copyright (C) 1993, 1995, 2001, 2002 Free Software Foundation, Inc. |
4 | ||
5 | ;; Author: Bill Wohler <wohler@newt.com> | |
6 | ;; Maintainer: Bill Wohler <wohler@newt.com> | |
7 | ;; Keywords: mail | |
8 | ;; See: mh-e.el | |
c26cf6c8 | 9 | |
60370d40 | 10 | ;; This file is part of GNU Emacs. |
c26cf6c8 | 11 | |
9b7bc076 | 12 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
c26cf6c8 RS |
13 | ;; it under the terms of the GNU General Public License as published by |
14 | ;; the Free Software Foundation; either version 2, or (at your option) | |
15 | ;; any later version. | |
16 | ||
9b7bc076 | 17 | ;; GNU Emacs is distributed in the hope that it will be useful, |
c26cf6c8 RS |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;; GNU General Public License for more details. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
24 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
25 | ;; Boston, MA 02111-1307, USA. | |
c26cf6c8 RS |
26 | |
27 | ;;; Commentary: | |
28 | ||
bdcfe844 | 29 | ;; Internal support for MH-E package. |
b578f267 EN |
30 | ;; Support for generating an mhn composition file. |
31 | ;; MIME is supported only by MH 6.8 or later. | |
c26cf6c8 | 32 | |
847b8219 KH |
33 | ;;; Change Log: |
34 | ||
bdcfe844 | 35 | ;; $Id: mh-mime.el,v 1.90 2002/11/22 20:00:48 satyaki Exp $ |
847b8219 | 36 | |
c26cf6c8 RS |
37 | ;;; Code: |
38 | ||
bdcfe844 | 39 | (require 'cl) |
c26cf6c8 | 40 | (require 'mh-comp) |
bdcfe844 BW |
41 | (require 'mh-utils) |
42 | (load "mm-decode" t t) ; Non-fatal dependency | |
43 | (load "mm-uu" t t) ; Non-fatal dependency | |
44 | (load "mailcap" t t) ; Non-fatal dependency | |
45 | (load "smiley" t t) ; Non-fatal dependency | |
46 | (require 'gnus-util) | |
47 | ||
48 | (autoload 'gnus-article-goto-header "gnus-art") | |
49 | (autoload 'article-emphasize "gnus-art") | |
50 | (autoload 'gnus-get-buffer-create "gnus") | |
51 | (autoload 'gnus-eval-format "gnus-spec") | |
52 | (autoload 'widget-convert-button "wid-edit") | |
53 | (autoload 'message-options-set-recipient "message") | |
54 | (autoload 'mml-secure-message-sign-pgpmime "mml-sec") | |
55 | (autoload 'mml-secure-message-encrypt-pgpmime "mml-sec") | |
56 | (autoload 'mml-minibuffer-read-file "mml") | |
57 | (autoload 'mml-minibuffer-read-description "mml") | |
58 | (autoload 'mml-insert-empty-tag "mml") | |
59 | (autoload 'mml-to-mime "mml") | |
60 | (autoload 'mml-attach-file "mml") | |
61 | ||
62 | ;;; Hooks | |
63 | (defcustom mh-edit-mhn-hook nil | |
64 | "Invoked on the formatted letter by \\<mh-letter-mode-map>\\[mh-edit-mhn]." | |
65 | :type 'hook | |
66 | :group 'mh-hook) | |
67 | ||
68 | ;; Keeps assorted MIME data | |
69 | (defstruct (mh-buffer-data (:conc-name mh-mime-) | |
70 | (:constructor mh-make-buffer-data)) | |
71 | ;; Structure to keep track of MIME handles on a per buffer basis. | |
72 | (handles ()) ; List of MIME handles | |
73 | (handles-cache (make-hash-table)) ; Cache to avoid multiple decodes of | |
74 | ; nested messages | |
75 | (parts-count 0) ; The button number is generated from | |
76 | ; this number | |
77 | (part-index-hash (make-hash-table))) ; Avoid incrementing the part number | |
78 | ; for nested messages | |
79 | ||
80 | ;;; This has to be a macro, since we do: (setf (mh-buffer-data) ...) | |
81 | (defmacro mh-buffer-data () | |
82 | "Convenience macro to get the MIME data structures of the current buffer." | |
83 | `(gethash (current-buffer) mh-globals-hash)) | |
84 | ||
85 | (defun mh-compose-insertion (&optional inline) | |
86 | "Add a directive to insert a MIME part from a file, using mhn or gnus. | |
87 | If the variable `mh-compose-insertion' is set to 'mhn, then that will be used. | |
88 | If it is set to 'gnus, then that will be used instead. | |
89 | Optional argument INLINE means make it an inline attachment." | |
90 | (interactive "P") | |
91 | (if (equal mh-compose-insertion 'gnus) | |
92 | (if inline | |
93 | (mh-mml-attach-file "inline") | |
94 | (mh-mml-attach-file)) | |
95 | (call-interactively 'mh-mhn-compose-insertion))) | |
96 | ||
97 | (defun mh-compose-forward (&optional description folder message) | |
98 | "Add a MIME directive to forward a message, using mhn or gnus. | |
99 | If the variable `mh-compose-insertion' is set to 'mhn, then that will be used. | |
100 | If it is set to 'gnus, then that will be used instead. | |
101 | Optional argument DESCRIPTION is a description of the attachment. | |
102 | Optional argument FOLDER is the folder from which the forwarded message should | |
103 | come. | |
104 | Optional argument MESSAGE is the message to forward. | |
105 | If any of the optional arguments are absent, they are prompted for." | |
106 | (interactive (list | |
107 | (read-string "Forw Content-description: ") | |
108 | (mh-prompt-for-folder "Message from" mh-sent-from-folder nil) | |
109 | (read-string (format "Messages%s: " | |
110 | (if mh-sent-from-msg | |
111 | (format " [%d]" mh-sent-from-msg) | |
112 | ""))))) | |
113 | (if (equal mh-compose-insertion 'gnus) | |
114 | (mh-mml-forward-message description folder message) | |
115 | (mh-mhn-compose-forw description folder message))) | |
c26cf6c8 | 116 | |
c26cf6c8 RS |
117 | ;; To do: |
118 | ;; paragraph code should not fill # lines if MIME enabled. | |
119 | ;; implement mh-auto-edit-mhn (if non-nil, \\[mh-send-letter] | |
120 | ;; invokes mh-edit-mhn automatically before sending.) | |
121 | ;; actually, instead of mh-auto-edit-mhn, | |
122 | ;; should read automhnproc from profile | |
123 | ;; MIME option to mh-forward | |
124 | ;; command to move to content-description insertion point | |
125 | ||
847b8219 KH |
126 | (defvar mh-mhn-args nil |
127 | "Extra arguments to have \\[mh-edit-mhn] pass to the \"mhn\" command. | |
128 | The arguments are passed to mhn if \\[mh-edit-mhn] is given a | |
129 | prefix argument. Normally default arguments to mhn are specified in the | |
130 | MH profile.") | |
131 | ||
bdcfe844 BW |
132 | (defvar mh-media-type-regexp |
133 | (concat (regexp-opt '("text" "image" "audio" "video" "application" | |
134 | "multipart" "message") t) | |
135 | "/[-.+a-zA-Z0-9]+") | |
136 | "Regexp matching valid media types used in MIME attachment compositions.") | |
137 | ||
138 | ;; Just defvar the variable to avoid compiler warning... This doesn't bind | |
139 | ;; the variable, so things should work exactly as before. | |
140 | (defvar mh-have-file-command) | |
847b8219 | 141 | |
a1b4049d BW |
142 | (defun mh-have-file-command () |
143 | "Return t if 'file' command is on the system. | |
144 | 'file -i' is used to get MIME type of composition insertion." | |
145 | (when (not (boundp 'mh-have-file-command)) | |
146 | (load "executable" t t) ; executable-find not autoloaded in emacs20 | |
147 | (setq mh-have-file-command | |
148 | (and (fboundp 'executable-find) | |
149 | (executable-find "file") ; file command exists | |
150 | ; and accepts -i and -b args. | |
151 | (zerop (call-process "file" nil nil nil "-i" "-b" | |
152 | (expand-file-name "inc" mh-progs)))))) | |
153 | mh-have-file-command) | |
154 | ||
bdcfe844 BW |
155 | (defvar mh-file-mime-type-substitutions |
156 | '(("application/msword" "\.xls" "application/ms-excel") | |
157 | ("application/msword" "\.ppt" "application/ms-powerpoint")) | |
158 | "Substitutions to make for Content-Type returned from file command. | |
159 | The first element is the Content-Type returned by the file command. | |
160 | The second element is a regexp matching the file name, usually the extension. | |
161 | The third element is the Content-Type to replace with.") | |
162 | ||
163 | (defun mh-file-mime-type-substitute (content-type filename) | |
164 | "Return possibly changed CONTENT-TYPE on the FILENAME. | |
165 | Substitutions are made from the `mh-file-mime-type-substitutions' variable." | |
166 | (let ((subst mh-file-mime-type-substitutions) | |
167 | (type) (match) (answer content-type) | |
168 | (case-fold-search t)) | |
169 | (while subst | |
170 | (setq type (car (car subst)) | |
171 | match (elt (car subst) 1)) | |
172 | (if (and (string-equal content-type type) | |
173 | (string-match match filename)) | |
174 | (setq answer (elt (car subst) 2) | |
175 | subst nil) | |
176 | (setq subst (cdr subst)))) | |
177 | answer)) | |
178 | ||
a1b4049d BW |
179 | (defun mh-file-mime-type (filename) |
180 | "Return MIME type of FILENAME from file command. | |
181 | Returns nil if file command not on system." | |
182 | (cond | |
183 | ((not (mh-have-file-command)) | |
184 | nil) ;No file command, exit now. | |
185 | ((not (and (file-exists-p filename)(file-readable-p filename))) | |
186 | nil) | |
187 | (t | |
188 | (save-excursion | |
189 | (let ((tmp-buffer (get-buffer-create mh-temp-buffer))) | |
190 | (set-buffer tmp-buffer) | |
191 | (unwind-protect | |
192 | (progn | |
193 | (call-process "file" nil '(t nil) nil "-b" "-i" | |
194 | (expand-file-name filename)) | |
195 | (goto-char (point-min)) | |
196 | (if (not (re-search-forward mh-media-type-regexp nil t)) | |
197 | nil | |
bdcfe844 | 198 | (mh-file-mime-type-substitute (match-string 0) filename))) |
a1b4049d BW |
199 | (kill-buffer tmp-buffer))))))) |
200 | ||
a1b4049d | 201 | ;;; This is needed for Emacs20 which doesn't have mailcap-mime-types. |
c26cf6c8 | 202 | (defvar mh-mime-content-types |
a1b4049d BW |
203 | '(("application/mac-binhex40") ("application/msword") |
204 | ("application/octet-stream") ("application/pdf") ("application/pgp-keys") | |
205 | ("application/pgp-signature") ("application/pkcs7-signature") | |
206 | ("application/postscript") ("application/rtf") | |
207 | ("application/vnd.ms-excel") ("application/vnd.ms-powerpoint") | |
208 | ("application/vnd.ms-project") ("application/vnd.ms-tnef") | |
209 | ("application/wordperfect5.1") ("application/wordperfect6.0") | |
210 | ("application/zip") | |
211 | ||
212 | ("audio/basic") ("audio/mpeg") | |
213 | ||
214 | ("image/gif") ("image/jpeg") ("image/png") | |
215 | ||
216 | ("message/delivery-status") | |
217 | ("message/external-body") ("message/partial") ("message/rfc822") | |
218 | ||
219 | ("text/enriched") ("text/html") ("text/plain") ("text/rfc822-headers") | |
220 | ("text/richtext") ("text/xml") | |
221 | ||
222 | ("video/mpeg") ("video/quicktime")) | |
223 | "Legal MIME content types. | |
224 | See documentation for \\[mh-edit-mhn].") | |
225 | ||
3fda54a2 | 226 | (defun mh-mhn-compose-insertion (filename type description attributes) |
42c21202 | 227 | "Add a directive to insert a MIME message part from a file. |
bdcfe844 BW |
228 | This is the typical way to insert non-text parts in a message. |
229 | ||
230 | Arguments are FILENAME, which tells where to find the file, TYPE, the MIME | |
231 | content type, DESCRIPTION, a line of text for the Content-Description field. | |
232 | ATTRIBUTES is a comma separated list of name=value pairs that is appended to | |
233 | the Content-Type field of the attachment. | |
234 | ||
a1b4049d BW |
235 | See also \\[mh-edit-mhn]." |
236 | (interactive (let ((filename (read-file-name "Insert contents of: "))) | |
3fda54a2 RS |
237 | (list |
238 | filename | |
a1b4049d BW |
239 | (or (mh-file-mime-type filename) |
240 | (completing-read "Content-Type: " | |
bdcfe844 | 241 | (if (fboundp 'mailcap-mime-types) |
a1b4049d BW |
242 | (mapcar 'list (mailcap-mime-types)) |
243 | mh-mime-content-types))) | |
244 | (read-string "Content-Description: ") | |
245 | (read-string "Content-Attributes: " | |
0cf950b1 KH |
246 | (concat "name=\"" |
247 | (file-name-nondirectory filename) | |
248 | "\""))))) | |
3fda54a2 | 249 | (mh-mhn-compose-type filename type description attributes )) |
c26cf6c8 | 250 | |
3fda54a2 | 251 | (defun mh-mhn-compose-type (filename type |
c26cf6c8 | 252 | &optional description attributes comment) |
bdcfe844 BW |
253 | "Insert a mhn directive to insert a file. |
254 | ||
255 | The file specified by FILENAME is encoded as TYPE. An optional DESCRIPTION is | |
256 | used as the Content-Description field, optional set of ATTRIBUTES and an | |
257 | optional COMMENT can also be included." | |
258 | (setq mh-mhn-compose-insert-flag t) | |
c26cf6c8 RS |
259 | (beginning-of-line) |
260 | (insert "#" type) | |
261 | (and attributes | |
262 | (insert "; " attributes)) | |
263 | (and comment | |
264 | (insert " (" comment ")")) | |
265 | (insert " [") | |
266 | (and description | |
267 | (insert description)) | |
3fda54a2 | 268 | (insert "] " (expand-file-name filename)) |
c26cf6c8 RS |
269 | (insert "\n")) |
270 | ||
271 | ||
3fda54a2 | 272 | (defun mh-mhn-compose-anon-ftp (host filename type description) |
42c21202 | 273 | "Add a directive for a MIME anonymous ftp external body part. |
bdcfe844 BW |
274 | This directive tells MH to include a reference to a message/external-body part |
275 | retrievable by anonymous FTP. | |
276 | ||
277 | Arguments are HOST and FILENAME, which tell where to find the file, TYPE, the | |
278 | MIME content type, and DESCRIPTION, a line of text for the Content-description | |
279 | header. | |
280 | ||
281 | See also \\[mh-edit-mhn]." | |
c26cf6c8 RS |
282 | (interactive (list |
283 | (read-string "Remote host: ") | |
3fda54a2 | 284 | (read-string "Remote filename: ") |
a1b4049d | 285 | (completing-read "External Content-Type: " |
bdcfe844 | 286 | (if (fboundp 'mailcap-mime-types) |
a1b4049d BW |
287 | (mapcar 'list (mailcap-mime-types)) |
288 | mh-mime-content-types)) | |
289 | (read-string "External Content-Description: "))) | |
3fda54a2 | 290 | (mh-mhn-compose-external-type "anon-ftp" host filename |
c26cf6c8 RS |
291 | type description)) |
292 | ||
3fda54a2 | 293 | (defun mh-mhn-compose-external-compressed-tar (host filename description) |
42c21202 | 294 | "Add a directive to include a MIME reference to a compressed tar file. |
bdcfe844 BW |
295 | The file should be available via anonymous ftp. This directive tells MH to |
296 | include a reference to a message/external-body part. | |
297 | ||
3fda54a2 | 298 | Arguments are HOST and FILENAME, which tell where to find the file, and |
847b8219 | 299 | DESCRIPTION, a line of text for the Content-description header. |
bdcfe844 | 300 | |
c26cf6c8 RS |
301 | See also \\[mh-edit-mhn]." |
302 | (interactive (list | |
303 | (read-string "Remote host: ") | |
3fda54a2 | 304 | (read-string "Remote filename: ") |
c26cf6c8 | 305 | (read-string "Tar file Content-description: "))) |
3fda54a2 | 306 | (mh-mhn-compose-external-type "anon-ftp" host filename |
c26cf6c8 RS |
307 | "application/octet-stream" |
308 | description | |
309 | "type=tar; conversions=x-compress" | |
310 | "mode=image")) | |
311 | ||
312 | ||
3fda54a2 | 313 | (defun mh-mhn-compose-external-type (access-type host filename type |
c26cf6c8 RS |
314 | &optional description |
315 | attributes extra-params comment) | |
bdcfe844 BW |
316 | "Add a directive to include a MIME reference to a remote file. |
317 | The file should be available via anonymous ftp. This directive tells MH to | |
318 | include a reference to a message/external-body part. | |
319 | ||
320 | Arguments are ACCESS-TYPE, HOST and FILENAME, which tell where to find the | |
321 | file and TYPE which is the MIME Content-Type. Optional arguments include | |
322 | DESCRIPTION, a line of text for the Content-description header, ATTRIBUTES, | |
323 | EXTRA-PARAMS, and COMMENT. | |
324 | ||
325 | See also \\[mh-edit-mhn]." | |
326 | (setq mh-mhn-compose-insert-flag t) | |
c26cf6c8 RS |
327 | (beginning-of-line) |
328 | (insert "#@" type) | |
329 | (and attributes | |
330 | (insert "; " attributes)) | |
331 | (and comment | |
332 | (insert " (" comment ") ")) | |
333 | (insert " [") | |
334 | (and description | |
335 | (insert description)) | |
336 | (insert "] ") | |
337 | (insert "access-type=" access-type "; ") | |
338 | (insert "site=" host) | |
3fda54a2 RS |
339 | (insert "; name=" (file-name-nondirectory filename)) |
340 | (insert "; directory=\"" (file-name-directory filename) "\"") | |
c26cf6c8 RS |
341 | (and extra-params |
342 | (insert "; " extra-params)) | |
343 | (insert "\n")) | |
344 | ||
847b8219 | 345 | (defun mh-mhn-compose-forw (&optional description folder messages) |
42c21202 | 346 | "Add a forw directive to this message, to forward a message with MIME. |
c26cf6c8 | 347 | This directive tells MH to include the named messages in this one. |
bdcfe844 | 348 | |
c26cf6c8 | 349 | Arguments are DESCRIPTION, a line of text for the Content-description header, |
42c21202 | 350 | and FOLDER and MESSAGES, which name the message(s) to be forwarded. |
bdcfe844 | 351 | |
c26cf6c8 RS |
352 | See also \\[mh-edit-mhn]." |
353 | (interactive (list | |
354 | (read-string "Forw Content-description: ") | |
847b8219 | 355 | (mh-prompt-for-folder "Message from" mh-sent-from-folder nil) |
c26cf6c8 RS |
356 | (read-string (format "Messages%s: " |
357 | (if mh-sent-from-msg | |
358 | (format " [%d]" mh-sent-from-msg) | |
847b8219 | 359 | ""))))) |
bdcfe844 | 360 | (setq mh-mhn-compose-insert-flag t) |
c26cf6c8 RS |
361 | (beginning-of-line) |
362 | (insert "#forw [") | |
363 | (and description | |
364 | (not (string= description "")) | |
365 | (insert description)) | |
366 | (insert "]") | |
367 | (and folder | |
368 | (not (string= folder "")) | |
369 | (insert " " folder)) | |
847b8219 KH |
370 | (if (and messages |
371 | (not (string= messages ""))) | |
c26cf6c8 | 372 | (let ((start (point))) |
847b8219 | 373 | (insert " " messages) |
c26cf6c8 RS |
374 | (subst-char-in-region start (point) ?, ? )) |
375 | (if mh-sent-from-msg | |
376 | (insert " " (int-to-string mh-sent-from-msg)))) | |
377 | (insert "\n")) | |
378 | ||
847b8219 KH |
379 | (defun mh-edit-mhn (&optional extra-args) |
380 | "Format the current draft for MIME, expanding any mhn directives. | |
a1b4049d BW |
381 | |
382 | Process the current draft with the mhn program, which, using directives | |
383 | already inserted in the draft, fills in all the MIME components and header | |
384 | fields. | |
385 | ||
c26cf6c8 | 386 | This step should be done last just before sending the message. |
a1b4049d BW |
387 | |
388 | The `\\[mh-revert-mhn-edit]' command undoes this command. The arguments in the | |
389 | list `mh-mhn-args' are passed to mhn if this function is passed an optional | |
390 | prefix argument EXTRA-ARGS. | |
391 | ||
392 | For assistance with creating mhn directives to insert various types of | |
393 | components in a message, see \\[mh-mhn-compose-insertion] (generic insertion | |
394 | from a file), \\[mh-mhn-compose-anon-ftp] (external reference to file via | |
395 | anonymous ftp), \\[mh-mhn-compose-external-compressed-tar] \ \(reference to | |
396 | compressed tar file via anonymous ftp), and \\[mh-mhn-compose-forw] (forward | |
397 | message). If these helper functions are used, `mh-edit-mhn' is run | |
398 | automatically when the draft is sent. | |
399 | ||
bdcfe844 BW |
400 | The value of `mh-edit-mhn-hook' is a list of functions to be called, with no |
401 | arguments, after performing the conversion. | |
402 | ||
a1b4049d | 403 | The mhn program is part of MH version 6.8 or later." |
847b8219 | 404 | (interactive "*P") |
c26cf6c8 RS |
405 | (save-buffer) |
406 | (message "mhn editing...") | |
a1b4049d | 407 | (cond |
bdcfe844 | 408 | (mh-nmh-flag |
a1b4049d BW |
409 | (mh-exec-cmd-error nil |
410 | "mhbuild" (if extra-args mh-mhn-args) buffer-file-name)) | |
411 | (t | |
412 | (mh-exec-cmd-error (format "mhdraft=%s" buffer-file-name) | |
413 | "mhn" (if extra-args mh-mhn-args) buffer-file-name))) | |
bdcfe844 | 414 | (setq mh-mhn-compose-insert-flag nil) |
c26cf6c8 | 415 | (revert-buffer t t) |
847b8219 KH |
416 | (message "mhn editing...done") |
417 | (run-hooks 'mh-edit-mhn-hook)) | |
c26cf6c8 | 418 | |
c26cf6c8 | 419 | (defun mh-revert-mhn-edit (noconfirm) |
a1b4049d BW |
420 | "Undo the effect of \\[mh-edit-mhn] by reverting to the backup file. |
421 | Optional non-nil argument NOCONFIRM means don't ask for confirmation." | |
c26cf6c8 RS |
422 | (interactive "*P") |
423 | (if (null buffer-file-name) | |
424 | (error "Buffer does not seem to be associated with any file")) | |
425 | (let ((backup-strings '("," "#")) | |
426 | backup-file) | |
427 | (while (and backup-strings | |
428 | (not (file-exists-p | |
429 | (setq backup-file | |
430 | (concat (file-name-directory buffer-file-name) | |
431 | (car backup-strings) | |
432 | (file-name-nondirectory buffer-file-name) | |
433 | ".orig"))))) | |
434 | (setq backup-strings (cdr backup-strings))) | |
435 | (or backup-strings | |
a1b4049d | 436 | (error "Backup file for %s no longer exists!" buffer-file-name)) |
c26cf6c8 RS |
437 | (or noconfirm |
438 | (yes-or-no-p (format "Revert buffer from file %s? " | |
439 | backup-file)) | |
a1b4049d | 440 | (error "Revert not confirmed")) |
c26cf6c8 RS |
441 | (let ((buffer-read-only nil)) |
442 | (erase-buffer) | |
443 | (insert-file-contents backup-file)) | |
444 | (after-find-file nil))) | |
60370d40 | 445 | |
bdcfe844 BW |
446 | \f |
447 | ||
448 | ;;; MIME composition functions | |
449 | ||
450 | (defun mh-mml-to-mime () | |
451 | "Compose MIME message from mml directives." | |
452 | (interactive) | |
453 | (when mh-gnus-pgp-support-flag ;; This is only needed for PGP | |
454 | (message-options-set-recipient)) | |
455 | (mml-to-mime) | |
456 | (setq mh-mml-compose-insert-flag nil)) | |
457 | ||
458 | (defun mh-mml-forward-message (description folder message) | |
459 | "Forward a message as attachment. | |
460 | The function will prompt the user for a DESCRIPTION, a FOLDER and MESSAGE | |
461 | number." | |
462 | (let ((msg (if (equal message "") | |
463 | mh-sent-from-msg | |
464 | (car (read-from-string message))))) | |
465 | (cond ((integerp msg) | |
466 | (if (string= "" description) | |
467 | ;; Rationale: mml-attach-file constructs a malformed composition | |
468 | ;; if the description string is empty. This fixes SF #625168. | |
469 | (mml-attach-file (format "%s%s/%d" | |
470 | mh-user-path (substring folder 1) msg) | |
471 | "message/rfc822") | |
472 | (mml-attach-file (format "%s%s/%d" | |
473 | mh-user-path (substring folder 1) msg) | |
474 | "message/rfc822" | |
475 | description)) | |
476 | (setq mh-mml-compose-insert-flag t)) | |
477 | (t (error "The message number, %s is not a integer!" msg))))) | |
478 | ||
479 | (defun mh-mml-attach-file (&optional disposition) | |
480 | "Attach a file to the outgoing MIME message. | |
481 | The file is not inserted or encoded until you send the message with | |
482 | `\\[mh-send-letter]'. | |
483 | Message disposition is \"inline\" or \"attachment\" and is prompted for if | |
484 | DISPOSITION is nil. | |
485 | ||
486 | This is basically `mml-attach-file' from gnus, modified such that a prefix | |
487 | argument yields an `inline' disposition and Content-Type is determined | |
488 | automatically." | |
489 | (let* ((file (mml-minibuffer-read-file "Attach file: ")) | |
490 | (type (or (mh-file-mime-type file) | |
491 | (completing-read "Content-Type: " | |
492 | (if (fboundp 'mailcap-mime-types) | |
493 | (mapcar 'list (mailcap-mime-types)) | |
494 | mh-mime-content-types)))) | |
495 | (description (mml-minibuffer-read-description)) | |
496 | (dispos (or disposition | |
497 | (completing-read "Disposition: [attachment] " | |
498 | '(("attachment")("inline")) | |
499 | nil t nil nil | |
500 | "attachment")))) | |
501 | (mml-insert-empty-tag 'part 'type type 'filename file | |
502 | 'disposition dispos 'description description) | |
503 | (setq mh-mml-compose-insert-flag t))) | |
504 | ||
505 | (defun mh-mml-secure-message-sign-pgpmime () | |
506 | "Add directive to encrypt/sign the entire message." | |
507 | (interactive) | |
508 | (if (not mh-gnus-pgp-support-flag) | |
509 | (error "Sorry. Your version of gnus does not support PGP/GPG") | |
510 | (mml-secure-message-sign-pgpmime) | |
511 | (setq mh-mml-compose-insert-flag t))) | |
512 | ||
513 | (defun mh-mml-secure-message-encrypt-pgpmime (&optional dontsign) | |
514 | "Add directive to encrypt and sign the entire message. | |
515 | If called with a prefix argument DONTSIGN, only encrypt (do NOT sign)." | |
516 | (interactive "P") | |
517 | (if (not mh-gnus-pgp-support-flag) | |
518 | (error "Sorry. Your version of gnus does not support PGP/GPG") | |
519 | (mml-secure-message-encrypt-pgpmime dontsign) | |
520 | (setq mh-mml-compose-insert-flag t))) | |
521 | ||
522 | \f | |
523 | ||
524 | ;;; MIME decoding | |
525 | ||
526 | (defcustom mh-graphical-smileys-flag t | |
527 | "*Non-nil means graphical smileys are displayed. | |
528 | Non-nil means that small graphics will be used in the show buffer instead of | |
529 | patterns like :-), ;-) etc. The setting only has effect if | |
530 | `mh-decode-mime-flag' is non-nil." | |
531 | :type 'boolean | |
532 | :group 'mh-buffer) | |
533 | ||
534 | (defcustom mh-graphical-emphasis-flag t | |
535 | "*Non-nil means graphical emphasis is displayed. | |
536 | Non-nil means that _underline_ will be underlined, *bold* will appear in bold, | |
537 | /italic/ will appear in italic etc. See `gnus-emphasis-alist' for the whole | |
538 | list. The setting only has effect if `mh-decode-mime-flag' is non-nil." | |
539 | :type 'boolean | |
540 | :group 'mh-buffer) | |
541 | ||
542 | ;; Small image definition | |
543 | (defcustom mh-max-inline-image-width nil | |
544 | "*Maximum inline image width if Content-Disposition is not present. | |
545 | If nil, image will be displayed if its width is smaller than the width of the | |
546 | window." | |
547 | :type '(choice (const nil) integer) | |
548 | :group 'mh-buffer) | |
549 | ||
550 | (defcustom mh-max-inline-image-height nil | |
551 | "*Maximum inline image height if Content-Disposition is not present. | |
552 | If nil, image will be displayed if its height is smaller than the height of | |
553 | the window." | |
554 | :type '(choice (const nil) integer) | |
555 | :group 'mh-buffer) | |
556 | ||
557 | (defcustom mh-display-buttons-for-inline-parts-flag nil | |
558 | "*Non-nil means display buttons for all inline MIME parts. | |
559 | If non-nil, buttons are displayed for all MIME parts. Inline parts start off | |
560 | in displayed state but they can be hidden by clicking the button. If nil no | |
561 | buttons are shown for inline parts." | |
562 | :type 'boolean | |
563 | :group 'mh-buffer) | |
564 | ||
565 | (defcustom mh-mime-save-parts-default-directory t | |
566 | "Default directory to use for `mh-mime-save-parts'. | |
567 | If nil, prompt and set for next time the command is used during same session. | |
568 | If t, prompt always" | |
569 | :type '(choice (const :tag "Prompt the first time" nil) | |
570 | (const :tag "Prompt always" t) | |
571 | directory) | |
572 | :group 'mh) | |
573 | ||
574 | (defmacro mh-defun-compat (function arg-list &rest body) | |
575 | "This is a macro to define functions which are not defined. | |
576 | It is used for Gnus utility functions which were added recently. If FUNCTION | |
577 | is not defined then it is defined to have argument list, ARG-LIST and body, | |
578 | BODY." | |
579 | (let ((defined-p (fboundp function))) | |
580 | (unless defined-p | |
581 | `(defun ,function ,arg-list ,@body)))) | |
582 | ||
583 | ;; Copy of original function from gnus-util.el | |
584 | (mh-defun-compat gnus-local-map-property (map) | |
585 | "Return a list suitable for a text property list specifying keymap MAP." | |
586 | (cond (mh-xemacs-flag (list 'keymap map)) | |
587 | ((>= emacs-major-version 21) (list 'keymap map)) | |
588 | (t (list 'local-map map)))) | |
589 | ||
590 | ;; Copy of original function from mm-decode.el | |
591 | (mh-defun-compat mm-merge-handles (handles1 handles2) | |
592 | (append (if (listp (car handles1)) handles1 (list handles1)) | |
593 | (if (listp (car handles2)) handles2 (list handles2)))) | |
594 | ||
595 | ;; Copy of function from mm-decode.el | |
596 | (mh-defun-compat mm-set-handle-multipart-parameter (handle parameter value) | |
597 | ;; HANDLE could be a CTL. | |
598 | (if handle | |
599 | (put-text-property 0 (length (car handle)) parameter value | |
600 | (car handle)))) | |
601 | ||
602 | ;; Copy of original macro is in mm-decode.el | |
603 | (mh-defun-compat mm-handle-multipart-ctl-parameter (handle parameter) | |
604 | (get-text-property 0 parameter (car handle))) | |
605 | ||
606 | ;; Copy of original function in mm-decode.el | |
607 | (mh-defun-compat mm-readable-p (handle) | |
608 | "Say whether the content of HANDLE is readable." | |
609 | (and (< (with-current-buffer (mm-handle-buffer handle) | |
610 | (buffer-size)) 10000) | |
611 | (mm-with-unibyte-buffer | |
612 | (mm-insert-part handle) | |
613 | (and (eq (mm-body-7-or-8) '7bit) | |
614 | (not (mm-long-lines-p 76)))))) | |
615 | ||
616 | ;; Copy of original function in mm-bodies.el | |
617 | (mh-defun-compat mm-long-lines-p (length) | |
618 | "Say whether any of the lines in the buffer is longer than LINES." | |
619 | (save-excursion | |
620 | (goto-char (point-min)) | |
621 | (end-of-line) | |
622 | (while (and (not (eobp)) | |
623 | (not (> (current-column) length))) | |
624 | (forward-line 1) | |
625 | (end-of-line)) | |
626 | (and (> (current-column) length) | |
627 | (current-column)))) | |
628 | ||
629 | (mh-defun-compat mm-keep-viewer-alive-p (handle) | |
630 | ;; Released Gnus doesn't keep handles associated with externally displayed | |
631 | ;; MIME parts. So this will always return nil. | |
632 | nil) | |
633 | ||
634 | (mh-defun-compat mm-destroy-parts (list) | |
635 | "Older emacs don't have this function." | |
636 | nil) | |
637 | ||
638 | ;;; This is mm-save-part from gnus 5.10 since that function in emacs21.2 is | |
639 | ;;; buggy (the args to read-file-name are incorrect). When all supported | |
640 | ;;; versions of Emacs come with at least Gnus 5.10, we can delete this | |
641 | ;;; function and rename calls to mh-mm-save-part to mm-save-part. | |
642 | (defun mh-mm-save-part (handle) | |
643 | "Write HANDLE to a file." | |
644 | (let ((name (mail-content-type-get (mm-handle-type handle) 'name)) | |
645 | (filename (mail-content-type-get | |
646 | (mm-handle-disposition handle) 'filename)) | |
647 | file) | |
648 | (when filename | |
649 | (setq filename (file-name-nondirectory filename))) | |
650 | (setq file (read-file-name "Save MIME part to: " | |
651 | (or mm-default-directory | |
652 | default-directory) | |
653 | nil nil (or filename name ""))) | |
654 | (setq mm-default-directory (file-name-directory file)) | |
655 | (and (or (not (file-exists-p file)) | |
656 | (yes-or-no-p (format "File %s already exists; overwrite? " | |
657 | file))) | |
658 | (mm-save-part-to-file handle file)))) | |
659 | ||
660 | \f | |
661 | ||
662 | ;;; MIME cleanup | |
663 | ||
664 | (defun mh-mime-cleanup () | |
665 | "Free the decoded MIME parts." | |
666 | (let ((mime-data (gethash (current-buffer) mh-globals-hash))) | |
667 | ;; This is for Emacs, what about XEmacs? | |
668 | (cond ((fboundp 'remove-images) | |
669 | (remove-images (point-min) (point-max)))) | |
670 | (when mime-data | |
671 | (mm-destroy-parts (mh-mime-handles mime-data)) | |
672 | (remhash (current-buffer) mh-globals-hash)))) | |
673 | ||
674 | (defun mh-destroy-postponed-handles () | |
675 | "Free MIME data for externally displayed mime parts." | |
676 | (let ((mime-data (mh-buffer-data))) | |
677 | (when mime-data | |
678 | (mm-destroy-parts (mh-mime-handles mime-data))) | |
679 | (remhash (current-buffer) mh-globals-hash))) | |
680 | ||
681 | (defun mh-handle-set-external-undisplayer (folder handle function) | |
682 | "Replacement for `mm-handle-set-external-undisplayer'. | |
683 | This is only called in recent versions of Gnus. The MIME handles are stored | |
684 | in data structures corresponding to MH-E folder buffer FOLDER instead of in | |
685 | Gnus (as in the original). The MIME part, HANDLE is associated with the | |
686 | undisplayer FUNCTION." | |
687 | (if (mm-keep-viewer-alive-p handle) | |
688 | (let ((new-handle (copy-sequence handle))) | |
689 | (mm-handle-set-undisplayer new-handle function) | |
690 | (mm-handle-set-undisplayer handle nil) | |
691 | (save-excursion | |
692 | (set-buffer folder) | |
693 | (push new-handle (mh-mime-handles (mh-buffer-data))))) | |
694 | (mm-handle-set-undisplayer handle function))) | |
695 | ||
696 | \f | |
697 | ||
698 | ;;; MIME transformations | |
699 | ||
700 | (defun mh-add-missing-mime-version-header () | |
701 | "Some mail programs don't put a MIME-Version header. | |
702 | I have seen this only in spam, so maybe we shouldn't fix this ;-)" | |
703 | (save-excursion | |
704 | (goto-char (point-min)) | |
705 | (when (and (message-fetch-field "content-type") | |
706 | (not (message-fetch-field "mime-version"))) | |
707 | (when (search-forward "\n\n" nil t) | |
708 | (forward-line -1) | |
709 | (insert "MIME-Version: 1.0\n"))))) | |
710 | ||
711 | (defun mh-display-smileys () | |
712 | "Function to display smileys." | |
713 | (when (and mh-graphical-smileys-flag (fboundp 'smiley-region)) | |
714 | (smiley-region (point-min) (point-max)))) | |
715 | ||
716 | (defun mh-display-emphasis () | |
717 | "Function to display graphical emphasis." | |
718 | (when mh-graphical-emphasis-flag | |
719 | (flet ((article-goto-body ())) ; shadow this function to do nothing | |
720 | (save-excursion | |
721 | (goto-char (point-min)) | |
722 | (article-emphasize))))) | |
723 | ||
724 | ;; Copied from gnus-art.el (should be checked for other cool things that can | |
725 | ;; be added to the buttons) | |
726 | (defvar mh-mime-button-commands | |
727 | '((mh-press-button "\r" "Toggle Display"))) | |
728 | (defvar mh-mime-button-map | |
729 | (let ((map (make-sparse-keymap))) | |
730 | (unless (>= (string-to-number emacs-version) 21) | |
731 | ;; XEmacs doesn't care. | |
732 | (set-keymap-parent map mh-show-mode-map)) | |
733 | (define-key map [mouse-2] 'mh-push-button) | |
734 | (dolist (c mh-mime-button-commands) | |
735 | (define-key map (cadr c) (car c))) | |
736 | map)) | |
737 | (defvar mh-mime-button-line-format-alist | |
738 | '((?T long-type ?s) | |
739 | (?d description ?s) | |
740 | (?p index ?s) | |
741 | (?e dots ?s))) | |
742 | (defvar mh-mime-button-line-format "%{%([%p. %d%T]%)%}%e\n") | |
743 | (defvar mh-mime-security-button-pressed nil) | |
744 | (defvar mh-mime-security-button-line-format "%{%([[%t:%i]%D]%)%}\n") | |
745 | (defvar mh-mime-security-button-end-line-format "%{%([[End of %t]%D]%)%}\n") | |
746 | (defvar mh-mime-security-button-line-format-alist | |
747 | '((?t type ?s) | |
748 | (?i info ?s) | |
749 | (?d details ?s) | |
750 | (?D pressed-details ?s))) | |
751 | (defvar mh-mime-security-button-map | |
752 | (let ((map (make-sparse-keymap))) | |
753 | (unless (>= (string-to-number emacs-version) 21) | |
754 | (set-keymap-parent map mh-show-mode-map)) | |
755 | (define-key map "\r" 'mh-press-button) | |
756 | (define-key map [mouse-2] 'mh-push-button) | |
757 | map)) | |
758 | ||
759 | (defvar mh-mime-save-parts-directory nil | |
760 | "Default to use for `mh-mime-save-parts-default-directory'. | |
761 | Set from last use.") | |
762 | ||
763 | (defun mh-mime-save-parts (arg) | |
764 | "Store the MIME parts of the current message. | |
765 | If ARG, prompt for directory, else use that specified by the variable | |
766 | `mh-mime-save-parts-default-directory'. These directories may be superseded by | |
767 | mh_profile directives, since this function calls on mhstore or mhn to do the | |
768 | actual storing." | |
769 | (interactive "P") | |
770 | (let ((msg (if (eq major-mode 'mh-show-mode) | |
771 | (mh-show-buffer-message-number) | |
772 | (mh-get-msg-num t))) | |
773 | (folder (if (eq major-mode 'mh-show-mode) | |
774 | mh-show-folder-buffer | |
775 | mh-current-folder)) | |
776 | (command (if mh-nmh-flag "mhstore" "mhn")) | |
777 | (directory | |
778 | (cond | |
779 | ((and (or arg | |
780 | (equal nil mh-mime-save-parts-default-directory) | |
781 | (equal t mh-mime-save-parts-default-directory)) | |
782 | (not mh-mime-save-parts-directory)) | |
783 | (read-file-name "Store in what directory? " nil nil t nil)) | |
784 | ((and (or arg | |
785 | (equal t mh-mime-save-parts-default-directory)) | |
786 | mh-mime-save-parts-directory) | |
787 | (read-file-name (format | |
788 | "Store in what directory? [%s] " | |
789 | mh-mime-save-parts-directory) | |
790 | "" mh-mime-save-parts-directory t "")) | |
791 | ((stringp mh-mime-save-parts-default-directory) | |
792 | mh-mime-save-parts-default-directory) | |
793 | (t | |
794 | mh-mime-save-parts-directory)))) | |
795 | (if (and (equal directory "") mh-mime-save-parts-directory) | |
796 | (setq directory mh-mime-save-parts-directory)) | |
797 | (if (not (file-directory-p directory)) | |
798 | (message "No directory specified.") | |
799 | (if (equal nil mh-mime-save-parts-default-directory) | |
800 | (setq mh-mime-save-parts-directory directory)) | |
801 | (save-excursion | |
802 | (set-buffer (get-buffer-create " *mh-store*")) | |
803 | (cd directory) | |
804 | (setq mh-mime-save-parts-directory directory) | |
805 | (erase-buffer) | |
806 | (apply 'call-process | |
807 | (expand-file-name command mh-progs) nil t nil | |
808 | (mh-list-to-string (list folder msg "-auto"))) | |
809 | (if (> (buffer-size) 0) | |
810 | (save-window-excursion | |
811 | (switch-to-buffer-other-window " *mh-store*") | |
812 | (sit-for 3))))))) | |
813 | ||
814 | ;; Avoid errors if gnus-sum isn't loaded yet... | |
815 | (defvar gnus-newsgroup-charset nil) | |
816 | (defvar gnus-newsgroup-name nil) | |
817 | ||
818 | (defun mh-mime-display (&optional pre-dissected-handles) | |
819 | "Display (and possibly decode) MIME handles. | |
820 | Optional argument, PRE-DISSECTED-HANDLES is a list of MIME handles. If | |
821 | present they are displayed otherwise the buffer is parsed and then | |
822 | displayed." | |
823 | (let ((handles ()) | |
824 | (folder mh-show-folder-buffer)) | |
825 | (flet ((mm-handle-set-external-undisplayer (handle function) | |
826 | (mh-handle-set-external-undisplayer folder handle function))) | |
827 | ;; If needed dissect the current buffer | |
828 | (if pre-dissected-handles | |
829 | (setq handles pre-dissected-handles) | |
830 | (setq handles (or (mm-dissect-buffer nil) (mm-uu-dissect))) | |
831 | (setf (mh-mime-handles (mh-buffer-data)) | |
832 | (mm-merge-handles handles (mh-mime-handles (mh-buffer-data))))) | |
833 | ||
834 | (when (and handles (or (not (stringp (car handles))) (cdr handles))) | |
835 | ;; Goto start of message body | |
836 | (goto-char (point-min)) | |
837 | (or (search-forward "\n\n" nil t) (goto-char (point-max))) | |
838 | ||
839 | ;; Delete the body | |
840 | (delete-region (point) (point-max)) | |
841 | ||
842 | ;; Display the MIME handles | |
843 | (mh-mime-display-part handles))))) | |
844 | ||
845 | (defun mh-mime-display-part (handle) | |
846 | "Decides the viewer to call based on the type of HANDLE." | |
847 | (cond ((null handle) nil) | |
848 | ((not (stringp (car handle))) | |
849 | (mh-mime-display-single handle)) | |
850 | ((equal (car handle) "multipart/alternative") | |
851 | (mh-mime-display-alternative (cdr handle))) | |
852 | ((and mh-gnus-pgp-support-flag | |
853 | (or (equal (car handle) "multipart/signed") | |
854 | (equal (car handle) "multipart/encrypted"))) | |
855 | (mh-mime-display-security handle)) | |
856 | (t (mh-mime-display-mixed (cdr handle))))) | |
857 | ||
858 | (defun mh-mime-display-alternative (handles) | |
859 | "Choose among the alternatives, HANDLES the part that will be displayed. | |
860 | If no part is preferred then all the parts are displayed." | |
861 | (let ((preferred (mm-preferred-alternative handles))) | |
862 | (cond ((and preferred (stringp (car preferred))) | |
863 | (mh-mime-display-part preferred)) | |
864 | (preferred | |
865 | (save-restriction | |
866 | (narrow-to-region (point) (if (eobp) (point) (1+ (point)))) | |
867 | (or (mm-display-part preferred) (mm-display-part preferred)) | |
868 | (goto-char (point-max)))) | |
869 | (t (mh-mime-display-mixed handles))))) | |
870 | ||
871 | (defun mh-mime-display-mixed (handles) | |
872 | "Display the list of MIME parts, HANDLES recursively." | |
873 | (mapcar #'mh-mime-display-part handles)) | |
874 | ||
875 | (defun mh-mime-part-index (handle) | |
876 | "Generate the button number for MIME part, HANDLE. | |
877 | Notice that a hash table is used to display the same number when buttons need | |
878 | to be displayed multiple times (for instance when nested messages are | |
879 | opened)." | |
880 | (or (gethash handle (mh-mime-part-index-hash (mh-buffer-data))) | |
881 | (setf (gethash handle (mh-mime-part-index-hash (mh-buffer-data))) | |
882 | (incf (mh-mime-parts-count (mh-buffer-data)))))) | |
883 | ||
884 | ;;; Avoid compiler warnings for XEmacs functions... | |
885 | (eval-when (compile) | |
886 | (loop for function in '(glyph-width window-pixel-width | |
887 | glyph-height window-pixel-height) | |
888 | do (or (fboundp function) (defalias function 'ignore)))) | |
889 | ||
890 | (defun mh-small-image-p (handle) | |
891 | "Decide whether HANDLE is a \"small\" image that can be displayed inline. | |
892 | This is only useful if a Content-Disposition header is not present." | |
893 | (let ((media-test (caddr (assoc (car (mm-handle-type handle)) | |
894 | mh-mm-inline-media-tests))) | |
895 | (mm-inline-large-images t)) | |
896 | (and media-test | |
897 | (equal (mm-handle-media-supertype handle) "image") | |
898 | (funcall media-test handle) ; Since mm-inline-large-images is T, | |
899 | ; this only tells us if the image is | |
900 | ; something that emacs can display | |
901 | (let* ((image (mm-get-image handle))) | |
902 | (cond ((fboundp 'glyph-width) | |
903 | ;; XEmacs -- totally untested, copied from gnus | |
904 | (and (< (glyph-width image) | |
905 | (or mh-max-inline-image-width | |
906 | (window-pixel-width))) | |
907 | (< (glyph-height image) | |
908 | (or mh-max-inline-image-height | |
909 | (window-pixel-height))))) | |
910 | ((fboundp 'image-size) | |
911 | ;; Emacs21 -- copied from gnus | |
912 | (let ((size (image-size image))) | |
913 | (and (< (cdr size) | |
914 | (or mh-max-inline-image-height | |
915 | (1- (window-height)))) | |
916 | (< (car size) | |
917 | (or mh-max-inline-image-width (window-width)))))) | |
918 | (t | |
919 | ;; Can't show image inline | |
920 | nil)))))) | |
921 | ||
922 | (defun mh-mime-display-single (handle) | |
923 | "Display a leaf node, HANDLE in the MIME tree." | |
924 | (let* ((type (mm-handle-media-type handle)) | |
925 | (small-image-flag (mh-small-image-p handle)) | |
926 | (attachmentp (equal (car (mm-handle-disposition handle)) | |
927 | "attachment")) | |
928 | (inlinep (and (equal (car (mm-handle-disposition handle)) "inline") | |
929 | (mm-inlinable-p handle) | |
930 | (mm-inlined-p handle))) | |
931 | (displayp (or inlinep ; display if inline | |
932 | (and (not attachmentp) ; if it is not an attachment | |
933 | (or small-image-flag ; display if small image | |
934 | ; or if user wants inline. | |
935 | (and (not (equal | |
936 | (mm-handle-media-supertype handle) | |
937 | "image")) | |
938 | (mm-inlinable-p handle) | |
939 | (mm-inlined-p handle))))))) | |
940 | (save-restriction | |
941 | (narrow-to-region (point) (if (eobp) (point) (1+ (point)))) | |
942 | (cond ((and mh-gnus-pgp-support-flag | |
943 | (equal type "application/pgp-signature")) | |
944 | nil) ; skip signatures as they are already handled... | |
945 | ((not displayp) | |
946 | (insert "\n") | |
947 | (mh-insert-mime-button handle (mh-mime-part-index handle) nil)) | |
948 | ((and displayp (not mh-display-buttons-for-inline-parts-flag)) | |
949 | (or (mm-display-part handle) (mm-display-part handle))) | |
950 | ((and displayp mh-display-buttons-for-inline-parts-flag) | |
951 | (insert "\n") | |
952 | (mh-insert-mime-button handle (mh-mime-part-index handle) nil) | |
953 | (forward-line -1) | |
954 | (mh-mm-display-part handle))) | |
955 | (goto-char (point-max))))) | |
956 | ||
957 | (defun mh-insert-mime-button (handle index displayed) | |
958 | "Insert MIME button for HANDLE. | |
959 | INDEX is the part number that will be DISPLAYED. It is also used by commands | |
960 | like \"K v\" which operate on individual MIME parts." | |
961 | ;; The button could be displayed by a previous decode. In that case | |
962 | ;; undisplay it if we need a hidden button. | |
963 | (when (and (mm-handle-displayed-p handle) (not displayed)) | |
964 | (mm-display-part handle)) | |
965 | (let ((name (or (mail-content-type-get (mm-handle-type handle) 'name) | |
966 | (mail-content-type-get (mm-handle-disposition handle) | |
967 | 'filename) | |
968 | (mail-content-type-get (mm-handle-type handle) 'url) | |
969 | "")) | |
970 | (type (mm-handle-media-type handle)) | |
971 | (description (mail-decode-encoded-word-string | |
972 | (or (mm-handle-description handle) ""))) | |
973 | (dots (if (or displayed (mm-handle-displayed-p handle)) " " "...")) | |
974 | long-type begin end) | |
975 | (if (string-match ".*/" name) (setq name (substring name (match-end 0)))) | |
976 | (setq long-type (concat type (and (not (equal name "")) | |
977 | (concat "; " name)))) | |
978 | (unless (equal description "") | |
979 | (setq long-type (concat " --- " long-type))) | |
980 | (unless (bolp) (insert "\n")) | |
981 | (setq begin (point)) | |
982 | (gnus-eval-format | |
983 | mh-mime-button-line-format mh-mime-button-line-format-alist | |
984 | `(,@(gnus-local-map-property mh-mime-button-map) | |
985 | mh-callback mh-mm-display-part | |
986 | mh-part ,index | |
987 | mh-data ,handle)) | |
988 | (setq end (point)) | |
989 | (widget-convert-button | |
990 | 'link begin end | |
991 | :mime-handle handle | |
992 | :action 'mh-widget-press-button | |
993 | :button-keymap mh-mime-button-map | |
994 | :help-echo | |
995 | "Mouse-2 click or press RET (in show buffer) to toggle display"))) | |
996 | ||
997 | ;; There is a bug in Gnus inline image display due to which an extra line | |
998 | ;; gets inserted every time it is viewed. To work around that problem we are | |
999 | ;; using an extra property 'mh-region to remember the region that is added | |
1000 | ;; when the button is clicked. The region is then deleted to make sure that | |
1001 | ;; no extra lines get inserted. | |
1002 | (defun mh-mm-display-part (handle) | |
1003 | "Toggle display of button for MIME part, HANDLE." | |
1004 | (beginning-of-line) | |
1005 | (let ((id (get-text-property (point) 'mh-part)) | |
1006 | (point (point)) | |
1007 | (window (selected-window)) | |
1008 | (mail-parse-charset 'nil) | |
1009 | (mail-parse-ignored-charsets nil) | |
1010 | region buffer-read-only) | |
1011 | (save-excursion | |
1012 | (unwind-protect | |
1013 | (let ((win (get-buffer-window (current-buffer) t))) | |
1014 | (when win | |
1015 | (select-window win)) | |
1016 | (goto-char point) | |
1017 | ||
1018 | (if (mm-handle-displayed-p handle) | |
1019 | ;; This will remove the part. | |
1020 | (progn | |
1021 | ;; Delete the button and displayed part (if any) | |
1022 | (let ((region (get-text-property point 'mh-region))) | |
1023 | (when region | |
1024 | (when (fboundp 'remove-images) | |
1025 | (remove-images (car region) (cdr region)))) | |
1026 | (mm-display-part handle) | |
1027 | (when region | |
1028 | (delete-region (car region) (cdr region)))) | |
1029 | ;; Delete button (if it still remains). This happens for | |
1030 | ;; externally displayed parts where the previous step does | |
1031 | ;; nothing. | |
1032 | (unless (eolp) | |
1033 | (delete-region (point) (progn (forward-line) (point))))) | |
1034 | (save-restriction | |
1035 | (delete-region (point) (progn (forward-line 1) (point))) | |
1036 | (narrow-to-region (point) (point)) | |
1037 | ;; Maybe we need another unwind-protect here. | |
1038 | (when (equal (mm-handle-media-supertype handle) "image") | |
1039 | (insert "\n")) | |
1040 | (when (and (not (eq (ignore-errors (mm-display-part handle)) | |
1041 | 'inline)) | |
1042 | (equal (mm-handle-media-supertype handle) | |
1043 | "image")) | |
1044 | (goto-char (point-min)) | |
1045 | (delete-char 1)) | |
1046 | (when (equal (mm-handle-media-supertype handle) "text") | |
1047 | (when (eq mh-highlight-citation-p 'gnus) | |
1048 | (mh-gnus-article-highlight-citation)) | |
1049 | (mh-display-smileys) | |
1050 | (mh-display-emphasis)) | |
1051 | (setq region (cons (progn (goto-char (point-min)) | |
1052 | (point-marker)) | |
1053 | (progn (goto-char (point-max)) | |
1054 | (point-marker))))))) | |
1055 | (when (window-live-p window) | |
1056 | (select-window window)) | |
1057 | (goto-char point) | |
1058 | (beginning-of-line) | |
1059 | (mh-insert-mime-button handle id (mm-handle-displayed-p handle)) | |
1060 | (goto-char point) | |
1061 | (when region | |
1062 | (add-text-properties (line-beginning-position) (line-end-position) | |
1063 | `(mh-region ,region))))))) | |
1064 | ||
1065 | (defun mh-press-button () | |
1066 | "Press MIME button. | |
1067 | If the MIME part is visible then it is removed. Otherwise the part is | |
1068 | displayed." | |
1069 | (interactive) | |
1070 | (let ((mm-inline-media-tests mh-mm-inline-media-tests) | |
1071 | (data (get-text-property (point) 'mh-data)) | |
1072 | (function (get-text-property (point) 'mh-callback)) | |
1073 | (buffer-read-only nil) | |
1074 | (folder mh-show-folder-buffer)) | |
1075 | (flet ((mm-handle-set-external-undisplayer (handle function) | |
1076 | (mh-handle-set-external-undisplayer folder handle function))) | |
1077 | (when (and function (eolp)) | |
1078 | (backward-char)) | |
1079 | (unwind-protect (and function (funcall function data)) | |
1080 | (set-buffer-modified-p nil))))) | |
1081 | ||
1082 | (defun mh-push-button (event) | |
1083 | "Click MIME button for EVENT. | |
1084 | If the MIME part is visible then it is removed. Otherwise the part is | |
1085 | displayed. This function is called when the mouse is used to click the MIME | |
1086 | button." | |
1087 | (interactive "e") | |
1088 | (set-buffer (window-buffer (posn-window (event-start event)))) | |
1089 | (select-window (posn-window (event-start event))) | |
1090 | (let* ((pos (posn-point (event-start event))) | |
1091 | (folder mh-show-folder-buffer) | |
1092 | (mm-inline-media-tests mh-mm-inline-media-tests) | |
1093 | (data (get-text-property pos 'mh-data)) | |
1094 | (function (get-text-property pos 'mh-callback)) | |
1095 | (buffer-read-only nil)) | |
1096 | (flet ((mm-handle-set-external-undisplayer (handle function) | |
1097 | (mh-handle-set-external-undisplayer folder handle function))) | |
1098 | (goto-char pos) | |
1099 | (unwind-protect (and function (funcall function data)) | |
1100 | (set-buffer-modified-p nil))))) | |
1101 | ||
1102 | (defun mh-mime-save-part () | |
1103 | "Save MIME part at point." | |
1104 | (interactive) | |
1105 | (let ((data (get-text-property (point) 'mh-data))) | |
1106 | (when data | |
1107 | (let ((mm-default-directory mh-mime-save-parts-directory)) | |
1108 | (mh-mm-save-part data) | |
1109 | (setq mh-mime-save-parts-directory mm-default-directory))))) | |
1110 | ||
1111 | (defun mh-mime-inline-part () | |
1112 | "Toggle display of the raw MIME part." | |
1113 | (interactive) | |
1114 | (let* ((buffer-read-only nil) | |
1115 | (data (get-text-property (point) 'mh-data)) | |
1116 | (inserted-flag (get-text-property (point) 'mh-mime-inserted)) | |
1117 | (displayed-flag (mm-handle-displayed-p data)) | |
1118 | (point (point)) | |
1119 | start end) | |
1120 | (cond ((and data (not inserted-flag) (not displayed-flag)) | |
1121 | (let ((contents (mm-get-part data))) | |
1122 | (add-text-properties (line-beginning-position) (line-end-position) | |
1123 | '(mh-mime-inserted t)) | |
1124 | (setq start (point-marker)) | |
1125 | (forward-line 1) | |
1126 | (mm-insert-inline data contents) | |
1127 | (setq end (point-marker)) | |
1128 | (add-text-properties | |
1129 | start (progn (goto-char start) (line-end-position)) | |
1130 | `(mh-region (,start . ,end))))) | |
1131 | ((and data (or inserted-flag displayed-flag)) | |
1132 | (mh-press-button) | |
1133 | (message "MIME part already inserted"))) | |
1134 | (goto-char point) | |
1135 | (set-buffer-modified-p nil))) | |
1136 | ||
1137 | (defun mh-widget-press-button (widget el) | |
1138 | "Callback for widget, WIDGET. | |
1139 | Parameter EL is unused." | |
1140 | (goto-char (widget-get widget :from)) | |
1141 | (mh-press-button)) | |
1142 | ||
1143 | (defun mh-mime-display-security (handle) | |
1144 | "Display PGP encrypted/signed message, HANDLE." | |
1145 | (insert "\n") | |
1146 | (save-restriction | |
1147 | (narrow-to-region (point) (point)) | |
1148 | (mh-insert-mime-security-button handle) | |
1149 | (mh-mime-display-mixed (cdr handle)) | |
1150 | (insert "\n") | |
1151 | (let ((mh-mime-security-button-line-format | |
1152 | mh-mime-security-button-end-line-format)) | |
1153 | (mh-insert-mime-security-button handle)) | |
1154 | (mm-set-handle-multipart-parameter | |
1155 | handle 'mh-region | |
1156 | (cons (set-marker (make-marker) (point-min)) | |
1157 | (set-marker (make-marker) (point-max)))))) | |
1158 | ||
1159 | ;;; I rewrote the security part because Gnus doesn't seem to ever minimize | |
1160 | ;;; the button. That is once the mime-security button is pressed there seems | |
1161 | ;;; to be no way of getting rid of the inserted text. | |
1162 | (defun mh-mime-security-show-details (handle) | |
1163 | "Toggle display of detailed security info for HANDLE." | |
1164 | (let ((details (mm-handle-multipart-ctl-parameter handle 'gnus-details))) | |
1165 | (when details | |
1166 | (let ((mh-mime-security-button-pressed | |
1167 | (not (get-text-property (point) 'mh-button-pressed))) | |
1168 | (mh-mime-security-button-line-format | |
1169 | (get-text-property (point) 'mh-line-format))) | |
1170 | (forward-char -1) | |
1171 | (while (eq (get-text-property (point) 'mh-line-format) | |
1172 | mh-mime-security-button-line-format) | |
1173 | (forward-char -1)) | |
1174 | (forward-char) | |
1175 | (save-restriction | |
1176 | (narrow-to-region (point) (point)) | |
1177 | (mh-insert-mime-security-button handle)) | |
1178 | (delete-region | |
1179 | (point) | |
1180 | (or (text-property-not-all | |
1181 | (point) (point-max) | |
1182 | 'mh-line-format mh-mime-security-button-line-format) | |
1183 | (point-max))) | |
1184 | (forward-line -1))))) | |
1185 | ||
1186 | (defun mh-mime-security-press-button (handle) | |
1187 | "Callback from security button for part HANDLE." | |
1188 | (when (mm-handle-multipart-ctl-parameter handle 'gnus-info) | |
1189 | (mh-mime-security-show-details handle))) | |
1190 | ||
1191 | ;; These variables should already be initialized in mm-decode.el if we have a | |
1192 | ;; recent enough Gnus. The defvars are here to avoid compiler warnings. | |
1193 | (defvar mm-verify-function-alist nil) | |
1194 | (defvar mm-decrypt-function-alist nil) | |
1195 | ||
1196 | (defvar pressed-details) | |
1197 | ||
1198 | (defun mh-insert-mime-security-button (handle) | |
1199 | "Display buttons for PGP message, HANDLE." | |
1200 | (let* ((protocol (mm-handle-multipart-ctl-parameter handle 'protocol)) | |
1201 | (crypto-type (or (nth 2 (assoc protocol mm-verify-function-alist)) | |
1202 | (nth 2 (assoc protocol mm-decrypt-function-alist)) | |
1203 | "Unknown")) | |
1204 | (type (concat crypto-type | |
1205 | (if (equal (car handle) "multipart/signed") | |
1206 | " Signed" " Encrypted") | |
1207 | " Part")) | |
1208 | (info (or (mm-handle-multipart-ctl-parameter handle 'gnus-info) | |
1209 | "Undecided")) | |
1210 | (details (mm-handle-multipart-ctl-parameter handle 'gnus-details)) | |
1211 | pressed-details begin end) | |
1212 | (setq details (if details (concat "\n" details) "")) | |
1213 | (setq pressed-details (if mh-mime-security-button-pressed details "")) | |
1214 | (unless (bolp) (insert "\n")) | |
1215 | (setq begin (point)) | |
1216 | (gnus-eval-format | |
1217 | mh-mime-security-button-line-format | |
1218 | mh-mime-security-button-line-format-alist | |
1219 | `(,@(gnus-local-map-property mh-mime-security-button-map) | |
1220 | mh-button-pressed ,mh-mime-security-button-pressed | |
1221 | mh-callback mh-mime-security-press-button | |
1222 | mh-line-format ,mh-mime-security-button-line-format | |
1223 | mh-data ,handle)) | |
1224 | (setq end (point)) | |
1225 | (widget-convert-button 'link begin end | |
1226 | :mime-handle handle | |
1227 | :action 'mh-widget-press-button | |
1228 | :button-keymap mh-mime-security-button-map | |
1229 | :help-echo "Mouse-2 click or press RET (in show buffer) to see security details.") | |
1230 | (when (equal info "Failed") | |
1231 | (let* ((type (if (equal (car handle) "multipart/signed") | |
1232 | "verification" "decryption")) | |
1233 | (warning (if (equal type "decryption") | |
1234 | "(passphrase may be incorrect)" ""))) | |
1235 | (message "%s %s failed %s" crypto-type type warning))))) | |
1236 | ||
1237 | (defun mh-mm-inline-message (handle) | |
1238 | "Display message, HANDLE. | |
1239 | The function decodes the message and displays it. It avoids decoding the same | |
1240 | message multiple times." | |
1241 | (let ((b (point)) | |
1242 | (charset (mail-content-type-get (mm-handle-type handle) 'charset)) | |
1243 | (clean-message-header mh-clean-message-header-flag) | |
1244 | (invisible-headers mh-invisible-headers) | |
1245 | (visible-headers mh-visible-headers)) | |
1246 | (when (and charset (stringp charset)) | |
1247 | (setq charset (intern (downcase charset))) | |
1248 | (when (eq charset 'us-ascii) | |
1249 | (setq charset nil))) | |
1250 | (save-excursion | |
1251 | (save-restriction | |
1252 | (narrow-to-region b b) | |
1253 | (mm-insert-part handle) | |
1254 | (mh-mime-display | |
1255 | (or (gethash handle (mh-mime-handles-cache (mh-buffer-data))) | |
1256 | (setf (gethash handle (mh-mime-handles-cache (mh-buffer-data))) | |
1257 | (let ((handles (or (mm-dissect-buffer nil) | |
1258 | (mm-uu-dissect)))) | |
1259 | (setf (mh-mime-handles (mh-buffer-data)) | |
1260 | (mm-merge-handles | |
1261 | handles (mh-mime-handles (mh-buffer-data)))) | |
1262 | handles)))) | |
1263 | ||
1264 | (goto-char (point-min)) | |
1265 | (cond (clean-message-header | |
1266 | (mh-clean-msg-header (point-min) | |
1267 | invisible-headers | |
1268 | visible-headers) | |
1269 | (goto-char (point-min))) | |
1270 | (t | |
1271 | (mh-start-of-uncleaned-message))) | |
1272 | (mh-show-xface) | |
1273 | (mh-show-addr) | |
1274 | ;; The other highlighting types don't need anything special | |
1275 | (when (eq mh-highlight-citation-p 'gnus) | |
1276 | (mh-gnus-article-highlight-citation)) | |
1277 | (goto-char (point-min)) | |
1278 | (insert "\n------- Forwarded Message\n\n") | |
1279 | (mh-display-smileys) | |
1280 | (mh-display-emphasis) | |
1281 | (mm-handle-set-undisplayer | |
1282 | handle | |
1283 | `(lambda () | |
1284 | (let (buffer-read-only) | |
1285 | (if (fboundp 'remove-specifier) | |
1286 | ;; This is only valid on XEmacs. | |
1287 | (mapcar (lambda (prop) | |
1288 | (remove-specifier | |
1289 | (face-property 'default prop) (current-buffer))) | |
1290 | '(background background-pixmap foreground))) | |
1291 | (delete-region ,(point-min-marker) ,(point-max-marker))))))))) | |
1292 | ||
1293 | (provide 'mh-mime) | |
1294 | ||
1295 | ;;; Local Variables: | |
1296 | ;;; sentence-end-double-space: nil | |
1297 | ;;; End: | |
1298 | ||
60370d40 | 1299 | ;;; mh-mime.el ends here |