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bdcfe844 | 1 | ;;; mh-mime.el --- MH-E support for composing MIME messages |
c26cf6c8 | 2 | |
924df208 | 3 | ;; Copyright (C) 1993, 1995, 2001, 02, 2003 Free Software Foundation, Inc. |
a1b4049d BW |
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 | ||
c26cf6c8 RS |
35 | ;;; Code: |
36 | ||
bdcfe844 | 37 | (require 'cl) |
c26cf6c8 | 38 | (require 'mh-comp) |
bdcfe844 | 39 | (require 'mh-utils) |
c3d9274a BW |
40 | (load "mm-decode" t t) ; Non-fatal dependency |
41 | (load "mm-uu" t t) ; Non-fatal dependency | |
42 | (load "mailcap" t t) ; Non-fatal dependency | |
43 | (load "smiley" t t) ; Non-fatal dependency | |
bdcfe844 BW |
44 | (require 'gnus-util) |
45 | ||
46 | (autoload 'gnus-article-goto-header "gnus-art") | |
47 | (autoload 'article-emphasize "gnus-art") | |
48 | (autoload 'gnus-get-buffer-create "gnus") | |
49 | (autoload 'gnus-eval-format "gnus-spec") | |
50 | (autoload 'widget-convert-button "wid-edit") | |
51 | (autoload 'message-options-set-recipient "message") | |
52 | (autoload 'mml-secure-message-sign-pgpmime "mml-sec") | |
53 | (autoload 'mml-secure-message-encrypt-pgpmime "mml-sec") | |
54 | (autoload 'mml-minibuffer-read-file "mml") | |
55 | (autoload 'mml-minibuffer-read-description "mml") | |
56 | (autoload 'mml-insert-empty-tag "mml") | |
57 | (autoload 'mml-to-mime "mml") | |
58 | (autoload 'mml-attach-file "mml") | |
924df208 | 59 | (autoload 'rfc2047-decode-region "rfc2047") |
bdcfe844 | 60 | |
c3d9274a | 61 | ;;;###mh-autoload |
bdcfe844 BW |
62 | (defun mh-compose-insertion (&optional inline) |
63 | "Add a directive to insert a MIME part from a file, using mhn or gnus. | |
64 | If the variable `mh-compose-insertion' is set to 'mhn, then that will be used. | |
65 | If it is set to 'gnus, then that will be used instead. | |
66 | Optional argument INLINE means make it an inline attachment." | |
67 | (interactive "P") | |
68 | (if (equal mh-compose-insertion 'gnus) | |
69 | (if inline | |
70 | (mh-mml-attach-file "inline") | |
71 | (mh-mml-attach-file)) | |
72 | (call-interactively 'mh-mhn-compose-insertion))) | |
73 | ||
c3d9274a | 74 | ;;;###mh-autoload |
bdcfe844 BW |
75 | (defun mh-compose-forward (&optional description folder message) |
76 | "Add a MIME directive to forward a message, using mhn or gnus. | |
77 | If the variable `mh-compose-insertion' is set to 'mhn, then that will be used. | |
78 | If it is set to 'gnus, then that will be used instead. | |
79 | Optional argument DESCRIPTION is a description of the attachment. | |
80 | Optional argument FOLDER is the folder from which the forwarded message should | |
81 | come. | |
82 | Optional argument MESSAGE is the message to forward. | |
83 | If any of the optional arguments are absent, they are prompted for." | |
84 | (interactive (list | |
c3d9274a BW |
85 | (read-string "Forw Content-description: ") |
86 | (mh-prompt-for-folder "Message from" mh-sent-from-folder nil) | |
87 | (read-string (format "Messages%s: " | |
88 | (if mh-sent-from-msg | |
bdcfe844 | 89 | (format " [%d]" mh-sent-from-msg) |
c3d9274a | 90 | ""))))) |
bdcfe844 BW |
91 | (if (equal mh-compose-insertion 'gnus) |
92 | (mh-mml-forward-message description folder message) | |
93 | (mh-mhn-compose-forw description folder message))) | |
c26cf6c8 | 94 | |
c26cf6c8 RS |
95 | ;; To do: |
96 | ;; paragraph code should not fill # lines if MIME enabled. | |
97 | ;; implement mh-auto-edit-mhn (if non-nil, \\[mh-send-letter] | |
c3d9274a | 98 | ;; invokes mh-edit-mhn automatically before sending.) |
c26cf6c8 RS |
99 | ;; actually, instead of mh-auto-edit-mhn, |
100 | ;; should read automhnproc from profile | |
101 | ;; MIME option to mh-forward | |
102 | ;; command to move to content-description insertion point | |
103 | ||
847b8219 KH |
104 | (defvar mh-mhn-args nil |
105 | "Extra arguments to have \\[mh-edit-mhn] pass to the \"mhn\" command. | |
106 | The arguments are passed to mhn if \\[mh-edit-mhn] is given a | |
107 | prefix argument. Normally default arguments to mhn are specified in the | |
108 | MH profile.") | |
109 | ||
bdcfe844 BW |
110 | (defvar mh-media-type-regexp |
111 | (concat (regexp-opt '("text" "image" "audio" "video" "application" | |
112 | "multipart" "message") t) | |
113 | "/[-.+a-zA-Z0-9]+") | |
114 | "Regexp matching valid media types used in MIME attachment compositions.") | |
115 | ||
116 | ;; Just defvar the variable to avoid compiler warning... This doesn't bind | |
117 | ;; the variable, so things should work exactly as before. | |
118 | (defvar mh-have-file-command) | |
847b8219 | 119 | |
a1b4049d BW |
120 | (defun mh-have-file-command () |
121 | "Return t if 'file' command is on the system. | |
122 | 'file -i' is used to get MIME type of composition insertion." | |
123 | (when (not (boundp 'mh-have-file-command)) | |
c3d9274a | 124 | (load "executable" t t) ; executable-find not autoloaded in emacs20 |
a1b4049d BW |
125 | (setq mh-have-file-command |
126 | (and (fboundp 'executable-find) | |
127 | (executable-find "file") ; file command exists | |
128 | ; and accepts -i and -b args. | |
129 | (zerop (call-process "file" nil nil nil "-i" "-b" | |
130 | (expand-file-name "inc" mh-progs)))))) | |
131 | mh-have-file-command) | |
132 | ||
bdcfe844 BW |
133 | (defvar mh-file-mime-type-substitutions |
134 | '(("application/msword" "\.xls" "application/ms-excel") | |
135 | ("application/msword" "\.ppt" "application/ms-powerpoint")) | |
136 | "Substitutions to make for Content-Type returned from file command. | |
137 | The first element is the Content-Type returned by the file command. | |
138 | The second element is a regexp matching the file name, usually the extension. | |
139 | The third element is the Content-Type to replace with.") | |
140 | ||
141 | (defun mh-file-mime-type-substitute (content-type filename) | |
142 | "Return possibly changed CONTENT-TYPE on the FILENAME. | |
143 | Substitutions are made from the `mh-file-mime-type-substitutions' variable." | |
144 | (let ((subst mh-file-mime-type-substitutions) | |
145 | (type) (match) (answer content-type) | |
146 | (case-fold-search t)) | |
147 | (while subst | |
148 | (setq type (car (car subst)) | |
149 | match (elt (car subst) 1)) | |
150 | (if (and (string-equal content-type type) | |
151 | (string-match match filename)) | |
152 | (setq answer (elt (car subst) 2) | |
153 | subst nil) | |
154 | (setq subst (cdr subst)))) | |
155 | answer)) | |
156 | ||
a1b4049d BW |
157 | (defun mh-file-mime-type (filename) |
158 | "Return MIME type of FILENAME from file command. | |
159 | Returns nil if file command not on system." | |
160 | (cond | |
161 | ((not (mh-have-file-command)) | |
162 | nil) ;No file command, exit now. | |
163 | ((not (and (file-exists-p filename)(file-readable-p filename))) | |
164 | nil) | |
165 | (t | |
166 | (save-excursion | |
167 | (let ((tmp-buffer (get-buffer-create mh-temp-buffer))) | |
168 | (set-buffer tmp-buffer) | |
169 | (unwind-protect | |
170 | (progn | |
171 | (call-process "file" nil '(t nil) nil "-b" "-i" | |
172 | (expand-file-name filename)) | |
173 | (goto-char (point-min)) | |
174 | (if (not (re-search-forward mh-media-type-regexp nil t)) | |
175 | nil | |
bdcfe844 | 176 | (mh-file-mime-type-substitute (match-string 0) filename))) |
a1b4049d BW |
177 | (kill-buffer tmp-buffer))))))) |
178 | ||
a1b4049d | 179 | ;;; This is needed for Emacs20 which doesn't have mailcap-mime-types. |
c26cf6c8 | 180 | (defvar mh-mime-content-types |
a1b4049d BW |
181 | '(("application/mac-binhex40") ("application/msword") |
182 | ("application/octet-stream") ("application/pdf") ("application/pgp-keys") | |
183 | ("application/pgp-signature") ("application/pkcs7-signature") | |
184 | ("application/postscript") ("application/rtf") | |
185 | ("application/vnd.ms-excel") ("application/vnd.ms-powerpoint") | |
186 | ("application/vnd.ms-project") ("application/vnd.ms-tnef") | |
187 | ("application/wordperfect5.1") ("application/wordperfect6.0") | |
188 | ("application/zip") | |
189 | ||
190 | ("audio/basic") ("audio/mpeg") | |
191 | ||
192 | ("image/gif") ("image/jpeg") ("image/png") | |
193 | ||
194 | ("message/delivery-status") | |
195 | ("message/external-body") ("message/partial") ("message/rfc822") | |
196 | ||
197 | ("text/enriched") ("text/html") ("text/plain") ("text/rfc822-headers") | |
198 | ("text/richtext") ("text/xml") | |
199 | ||
200 | ("video/mpeg") ("video/quicktime")) | |
201 | "Legal MIME content types. | |
202 | See documentation for \\[mh-edit-mhn].") | |
203 | ||
c3d9274a | 204 | ;;;###mh-autoload |
3fda54a2 | 205 | (defun mh-mhn-compose-insertion (filename type description attributes) |
42c21202 | 206 | "Add a directive to insert a MIME message part from a file. |
bdcfe844 BW |
207 | This is the typical way to insert non-text parts in a message. |
208 | ||
209 | Arguments are FILENAME, which tells where to find the file, TYPE, the MIME | |
210 | content type, DESCRIPTION, a line of text for the Content-Description field. | |
211 | ATTRIBUTES is a comma separated list of name=value pairs that is appended to | |
212 | the Content-Type field of the attachment. | |
213 | ||
a1b4049d BW |
214 | See also \\[mh-edit-mhn]." |
215 | (interactive (let ((filename (read-file-name "Insert contents of: "))) | |
c3d9274a BW |
216 | (list |
217 | filename | |
a1b4049d | 218 | (or (mh-file-mime-type filename) |
c3d9274a BW |
219 | (completing-read "Content-Type: " |
220 | (if (fboundp 'mailcap-mime-types) | |
221 | (mapcar 'list (mailcap-mime-types)) | |
222 | mh-mime-content-types))) | |
223 | (read-string "Content-Description: ") | |
224 | (read-string "Content-Attributes: " | |
225 | (concat "name=\"" | |
226 | (file-name-nondirectory filename) | |
227 | "\""))))) | |
3fda54a2 | 228 | (mh-mhn-compose-type filename type description attributes )) |
c26cf6c8 | 229 | |
3fda54a2 | 230 | (defun mh-mhn-compose-type (filename type |
c3d9274a | 231 | &optional description attributes comment) |
bdcfe844 BW |
232 | "Insert a mhn directive to insert a file. |
233 | ||
234 | The file specified by FILENAME is encoded as TYPE. An optional DESCRIPTION is | |
235 | used as the Content-Description field, optional set of ATTRIBUTES and an | |
236 | optional COMMENT can also be included." | |
c26cf6c8 RS |
237 | (beginning-of-line) |
238 | (insert "#" type) | |
239 | (and attributes | |
240 | (insert "; " attributes)) | |
241 | (and comment | |
242 | (insert " (" comment ")")) | |
243 | (insert " [") | |
244 | (and description | |
245 | (insert description)) | |
3fda54a2 | 246 | (insert "] " (expand-file-name filename)) |
c26cf6c8 RS |
247 | (insert "\n")) |
248 | ||
249 | ||
c3d9274a | 250 | ;;;###mh-autoload |
3fda54a2 | 251 | (defun mh-mhn-compose-anon-ftp (host filename type description) |
42c21202 | 252 | "Add a directive for a MIME anonymous ftp external body part. |
bdcfe844 BW |
253 | This directive tells MH to include a reference to a message/external-body part |
254 | retrievable by anonymous FTP. | |
255 | ||
256 | Arguments are HOST and FILENAME, which tell where to find the file, TYPE, the | |
257 | MIME content type, and DESCRIPTION, a line of text for the Content-description | |
258 | header. | |
259 | ||
260 | See also \\[mh-edit-mhn]." | |
c26cf6c8 | 261 | (interactive (list |
c3d9274a BW |
262 | (read-string "Remote host: ") |
263 | (read-string "Remote filename: ") | |
264 | (completing-read "External Content-Type: " | |
265 | (if (fboundp 'mailcap-mime-types) | |
266 | (mapcar 'list (mailcap-mime-types)) | |
267 | mh-mime-content-types)) | |
268 | (read-string "External Content-Description: "))) | |
3fda54a2 | 269 | (mh-mhn-compose-external-type "anon-ftp" host filename |
c3d9274a | 270 | type description)) |
c26cf6c8 | 271 | |
c3d9274a | 272 | ;;;###mh-autoload |
3fda54a2 | 273 | (defun mh-mhn-compose-external-compressed-tar (host filename description) |
42c21202 | 274 | "Add a directive to include a MIME reference to a compressed tar file. |
bdcfe844 BW |
275 | The file should be available via anonymous ftp. This directive tells MH to |
276 | include a reference to a message/external-body part. | |
277 | ||
3fda54a2 | 278 | Arguments are HOST and FILENAME, which tell where to find the file, and |
847b8219 | 279 | DESCRIPTION, a line of text for the Content-description header. |
bdcfe844 | 280 | |
c26cf6c8 RS |
281 | See also \\[mh-edit-mhn]." |
282 | (interactive (list | |
c3d9274a BW |
283 | (read-string "Remote host: ") |
284 | (read-string "Remote filename: ") | |
285 | (read-string "Tar file Content-description: "))) | |
3fda54a2 | 286 | (mh-mhn-compose-external-type "anon-ftp" host filename |
c3d9274a BW |
287 | "application/octet-stream" |
288 | description | |
289 | "type=tar; conversions=x-compress" | |
290 | "mode=image")) | |
c26cf6c8 RS |
291 | |
292 | ||
3fda54a2 | 293 | (defun mh-mhn-compose-external-type (access-type host filename type |
c3d9274a BW |
294 | &optional description |
295 | attributes extra-params | |
296 | comment) | |
bdcfe844 BW |
297 | "Add a directive to include a MIME reference to a remote file. |
298 | The file should be available via anonymous ftp. This directive tells MH to | |
299 | include a reference to a message/external-body part. | |
300 | ||
301 | Arguments are ACCESS-TYPE, HOST and FILENAME, which tell where to find the | |
302 | file and TYPE which is the MIME Content-Type. Optional arguments include | |
303 | DESCRIPTION, a line of text for the Content-description header, ATTRIBUTES, | |
304 | EXTRA-PARAMS, and COMMENT. | |
305 | ||
306 | See also \\[mh-edit-mhn]." | |
c26cf6c8 RS |
307 | (beginning-of-line) |
308 | (insert "#@" type) | |
309 | (and attributes | |
310 | (insert "; " attributes)) | |
311 | (and comment | |
312 | (insert " (" comment ") ")) | |
313 | (insert " [") | |
314 | (and description | |
315 | (insert description)) | |
316 | (insert "] ") | |
317 | (insert "access-type=" access-type "; ") | |
318 | (insert "site=" host) | |
3fda54a2 RS |
319 | (insert "; name=" (file-name-nondirectory filename)) |
320 | (insert "; directory=\"" (file-name-directory filename) "\"") | |
c26cf6c8 RS |
321 | (and extra-params |
322 | (insert "; " extra-params)) | |
323 | (insert "\n")) | |
324 | ||
c3d9274a | 325 | ;;;###mh-autoload |
847b8219 | 326 | (defun mh-mhn-compose-forw (&optional description folder messages) |
42c21202 | 327 | "Add a forw directive to this message, to forward a message with MIME. |
c26cf6c8 | 328 | This directive tells MH to include the named messages in this one. |
bdcfe844 | 329 | |
c26cf6c8 | 330 | Arguments are DESCRIPTION, a line of text for the Content-description header, |
42c21202 | 331 | and FOLDER and MESSAGES, which name the message(s) to be forwarded. |
bdcfe844 | 332 | |
c26cf6c8 RS |
333 | See also \\[mh-edit-mhn]." |
334 | (interactive (list | |
c3d9274a BW |
335 | (read-string "Forw Content-description: ") |
336 | (mh-prompt-for-folder "Message from" mh-sent-from-folder nil) | |
337 | (read-string (format "Messages%s: " | |
338 | (if mh-sent-from-msg | |
339 | (format " [%d]" mh-sent-from-msg) | |
340 | ""))))) | |
c26cf6c8 RS |
341 | (beginning-of-line) |
342 | (insert "#forw [") | |
343 | (and description | |
344 | (not (string= description "")) | |
345 | (insert description)) | |
346 | (insert "]") | |
347 | (and folder | |
348 | (not (string= folder "")) | |
349 | (insert " " folder)) | |
847b8219 | 350 | (if (and messages |
c3d9274a | 351 | (not (string= messages ""))) |
c26cf6c8 | 352 | (let ((start (point))) |
c3d9274a BW |
353 | (insert " " messages) |
354 | (subst-char-in-region start (point) ?, ? )) | |
c26cf6c8 | 355 | (if mh-sent-from-msg |
c3d9274a | 356 | (insert " " (int-to-string mh-sent-from-msg)))) |
c26cf6c8 RS |
357 | (insert "\n")) |
358 | ||
c3d9274a | 359 | ;;;###mh-autoload |
847b8219 KH |
360 | (defun mh-edit-mhn (&optional extra-args) |
361 | "Format the current draft for MIME, expanding any mhn directives. | |
a1b4049d BW |
362 | |
363 | Process the current draft with the mhn program, which, using directives | |
364 | already inserted in the draft, fills in all the MIME components and header | |
365 | fields. | |
366 | ||
924df208 BW |
367 | This step is performed automatically when sending the message, but this |
368 | function may be called manually before sending the draft as well. | |
a1b4049d BW |
369 | |
370 | The `\\[mh-revert-mhn-edit]' command undoes this command. The arguments in the | |
371 | list `mh-mhn-args' are passed to mhn if this function is passed an optional | |
372 | prefix argument EXTRA-ARGS. | |
373 | ||
374 | For assistance with creating mhn directives to insert various types of | |
375 | components in a message, see \\[mh-mhn-compose-insertion] (generic insertion | |
376 | from a file), \\[mh-mhn-compose-anon-ftp] (external reference to file via | |
377 | anonymous ftp), \\[mh-mhn-compose-external-compressed-tar] \ \(reference to | |
378 | compressed tar file via anonymous ftp), and \\[mh-mhn-compose-forw] (forward | |
924df208 | 379 | message). |
a1b4049d | 380 | |
bdcfe844 BW |
381 | The value of `mh-edit-mhn-hook' is a list of functions to be called, with no |
382 | arguments, after performing the conversion. | |
383 | ||
a1b4049d | 384 | The mhn program is part of MH version 6.8 or later." |
847b8219 | 385 | (interactive "*P") |
c26cf6c8 RS |
386 | (save-buffer) |
387 | (message "mhn editing...") | |
a1b4049d | 388 | (cond |
bdcfe844 | 389 | (mh-nmh-flag |
a1b4049d BW |
390 | (mh-exec-cmd-error nil |
391 | "mhbuild" (if extra-args mh-mhn-args) buffer-file-name)) | |
392 | (t | |
393 | (mh-exec-cmd-error (format "mhdraft=%s" buffer-file-name) | |
394 | "mhn" (if extra-args mh-mhn-args) buffer-file-name))) | |
c26cf6c8 | 395 | (revert-buffer t t) |
847b8219 KH |
396 | (message "mhn editing...done") |
397 | (run-hooks 'mh-edit-mhn-hook)) | |
c26cf6c8 | 398 | |
c3d9274a | 399 | ;;;###mh-autoload |
c26cf6c8 | 400 | (defun mh-revert-mhn-edit (noconfirm) |
a1b4049d BW |
401 | "Undo the effect of \\[mh-edit-mhn] by reverting to the backup file. |
402 | Optional non-nil argument NOCONFIRM means don't ask for confirmation." | |
c26cf6c8 RS |
403 | (interactive "*P") |
404 | (if (null buffer-file-name) | |
405 | (error "Buffer does not seem to be associated with any file")) | |
406 | (let ((backup-strings '("," "#")) | |
c3d9274a | 407 | backup-file) |
c26cf6c8 | 408 | (while (and backup-strings |
c3d9274a BW |
409 | (not (file-exists-p |
410 | (setq backup-file | |
411 | (concat (file-name-directory buffer-file-name) | |
412 | (car backup-strings) | |
413 | (file-name-nondirectory buffer-file-name) | |
414 | ".orig"))))) | |
c26cf6c8 RS |
415 | (setq backup-strings (cdr backup-strings))) |
416 | (or backup-strings | |
c3d9274a | 417 | (error "Backup file for %s no longer exists!" buffer-file-name)) |
c26cf6c8 | 418 | (or noconfirm |
c3d9274a BW |
419 | (yes-or-no-p (format "Revert buffer from file %s? " |
420 | backup-file)) | |
421 | (error "Revert not confirmed")) | |
c26cf6c8 RS |
422 | (let ((buffer-read-only nil)) |
423 | (erase-buffer) | |
424 | (insert-file-contents backup-file)) | |
425 | (after-find-file nil))) | |
60370d40 | 426 | |
924df208 BW |
427 | ;;;###mh-autoload |
428 | (defun mh-mhn-directive-present-p () | |
429 | "Check if the current buffer has text which might be a MHN directive." | |
430 | (save-excursion | |
431 | (block 'search-for-mhn-directive | |
432 | (goto-char (point-min)) | |
433 | (while (re-search-forward "^#" nil t) | |
434 | (let ((s (buffer-substring-no-properties (point) (line-end-position)))) | |
435 | (cond ((equal s "")) | |
436 | ((string-match "^forw[ \t\n]+" s) | |
437 | (return-from 'search-for-mhn-directive t)) | |
438 | (t (let ((first-token (car (split-string s "[ \t;@]")))) | |
439 | (when (string-match mh-media-type-regexp first-token) | |
440 | (return-from 'search-for-mhn-directive t))))))) | |
441 | nil))) | |
442 | ||
bdcfe844 BW |
443 | \f |
444 | ||
445 | ;;; MIME composition functions | |
446 | ||
c3d9274a | 447 | ;;;###mh-autoload |
bdcfe844 | 448 | (defun mh-mml-to-mime () |
924df208 BW |
449 | "Compose MIME message from mml directives. |
450 | This step is performed automatically when sending the message, but this | |
451 | function may be called manually before sending the draft as well." | |
bdcfe844 BW |
452 | (interactive) |
453 | (when mh-gnus-pgp-support-flag ;; This is only needed for PGP | |
454 | (message-options-set-recipient)) | |
924df208 | 455 | (mml-to-mime)) |
bdcfe844 | 456 | |
c3d9274a | 457 | ;;;###mh-autoload |
bdcfe844 BW |
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" | |
924df208 | 475 | description))) |
bdcfe844 BW |
476 | (t (error "The message number, %s is not a integer!" msg))))) |
477 | ||
c3d9274a | 478 | ;;;###mh-autoload |
bdcfe844 BW |
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 | |
924df208 | 502 | 'disposition dispos 'description description))) |
bdcfe844 | 503 | |
c3d9274a | 504 | ;;;###mh-autoload |
bdcfe844 BW |
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") | |
924df208 | 510 | (mml-secure-message-sign-pgpmime))) |
bdcfe844 | 511 | |
c3d9274a | 512 | ;;;###mh-autoload |
bdcfe844 BW |
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") | |
924df208 BW |
519 | (mml-secure-message-encrypt-pgpmime dontsign))) |
520 | ||
521 | ;;;###mh-autoload | |
522 | (defun mh-mml-directive-present-p () | |
523 | "Check if the current buffer has text which may be an MML directive." | |
524 | (save-excursion | |
525 | (goto-char (point-min)) | |
526 | (re-search-forward | |
527 | "\\(<#part\\(.\\|\n\\)*>[ \n\t]*<#/part>\\|^<#secure.+>$\\)" | |
528 | nil t))) | |
bdcfe844 BW |
529 | |
530 | \f | |
531 | ||
532 | ;;; MIME decoding | |
533 | ||
bdcfe844 BW |
534 | (defmacro mh-defun-compat (function arg-list &rest body) |
535 | "This is a macro to define functions which are not defined. | |
536 | It is used for Gnus utility functions which were added recently. If FUNCTION | |
537 | is not defined then it is defined to have argument list, ARG-LIST and body, | |
538 | BODY." | |
539 | (let ((defined-p (fboundp function))) | |
540 | (unless defined-p | |
541 | `(defun ,function ,arg-list ,@body)))) | |
c3d9274a | 542 | (put 'mh-defun-compat 'lisp-indent-function 'defun) |
bdcfe844 BW |
543 | |
544 | ;; Copy of original function from gnus-util.el | |
545 | (mh-defun-compat gnus-local-map-property (map) | |
546 | "Return a list suitable for a text property list specifying keymap MAP." | |
547 | (cond (mh-xemacs-flag (list 'keymap map)) | |
548 | ((>= emacs-major-version 21) (list 'keymap map)) | |
549 | (t (list 'local-map map)))) | |
550 | ||
551 | ;; Copy of original function from mm-decode.el | |
552 | (mh-defun-compat mm-merge-handles (handles1 handles2) | |
553 | (append (if (listp (car handles1)) handles1 (list handles1)) | |
554 | (if (listp (car handles2)) handles2 (list handles2)))) | |
555 | ||
556 | ;; Copy of function from mm-decode.el | |
557 | (mh-defun-compat mm-set-handle-multipart-parameter (handle parameter value) | |
558 | ;; HANDLE could be a CTL. | |
559 | (if handle | |
560 | (put-text-property 0 (length (car handle)) parameter value | |
c3d9274a | 561 | (car handle)))) |
bdcfe844 BW |
562 | |
563 | ;; Copy of original macro is in mm-decode.el | |
564 | (mh-defun-compat mm-handle-multipart-ctl-parameter (handle parameter) | |
565 | (get-text-property 0 parameter (car handle))) | |
566 | ||
924df208 BW |
567 | (mh-do-in-xemacs (defvar default-enable-multibyte-characters)) |
568 | ||
bdcfe844 BW |
569 | ;; Copy of original function in mm-decode.el |
570 | (mh-defun-compat mm-readable-p (handle) | |
571 | "Say whether the content of HANDLE is readable." | |
572 | (and (< (with-current-buffer (mm-handle-buffer handle) | |
c3d9274a | 573 | (buffer-size)) 10000) |
bdcfe844 | 574 | (mm-with-unibyte-buffer |
c3d9274a BW |
575 | (mm-insert-part handle) |
576 | (and (eq (mm-body-7-or-8) '7bit) | |
577 | (not (mm-long-lines-p 76)))))) | |
bdcfe844 BW |
578 | |
579 | ;; Copy of original function in mm-bodies.el | |
580 | (mh-defun-compat mm-long-lines-p (length) | |
581 | "Say whether any of the lines in the buffer is longer than LINES." | |
582 | (save-excursion | |
583 | (goto-char (point-min)) | |
584 | (end-of-line) | |
585 | (while (and (not (eobp)) | |
c3d9274a | 586 | (not (> (current-column) length))) |
bdcfe844 BW |
587 | (forward-line 1) |
588 | (end-of-line)) | |
589 | (and (> (current-column) length) | |
c3d9274a | 590 | (current-column)))) |
bdcfe844 BW |
591 | |
592 | (mh-defun-compat mm-keep-viewer-alive-p (handle) | |
593 | ;; Released Gnus doesn't keep handles associated with externally displayed | |
594 | ;; MIME parts. So this will always return nil. | |
595 | nil) | |
596 | ||
597 | (mh-defun-compat mm-destroy-parts (list) | |
598 | "Older emacs don't have this function." | |
599 | nil) | |
600 | ||
601 | ;;; This is mm-save-part from gnus 5.10 since that function in emacs21.2 is | |
602 | ;;; buggy (the args to read-file-name are incorrect). When all supported | |
603 | ;;; versions of Emacs come with at least Gnus 5.10, we can delete this | |
604 | ;;; function and rename calls to mh-mm-save-part to mm-save-part. | |
605 | (defun mh-mm-save-part (handle) | |
606 | "Write HANDLE to a file." | |
607 | (let ((name (mail-content-type-get (mm-handle-type handle) 'name)) | |
c3d9274a BW |
608 | (filename (mail-content-type-get |
609 | (mm-handle-disposition handle) 'filename)) | |
610 | file) | |
bdcfe844 BW |
611 | (when filename |
612 | (setq filename (file-name-nondirectory filename))) | |
613 | (setq file (read-file-name "Save MIME part to: " | |
c3d9274a BW |
614 | (or mm-default-directory |
615 | default-directory) | |
616 | nil nil (or filename name ""))) | |
bdcfe844 BW |
617 | (setq mm-default-directory (file-name-directory file)) |
618 | (and (or (not (file-exists-p file)) | |
c3d9274a BW |
619 | (yes-or-no-p (format "File %s already exists; overwrite? " |
620 | file))) | |
621 | (mm-save-part-to-file handle file)))) | |
bdcfe844 BW |
622 | |
623 | \f | |
624 | ||
625 | ;;; MIME cleanup | |
626 | ||
c3d9274a | 627 | ;;;###mh-autoload |
bdcfe844 BW |
628 | (defun mh-mime-cleanup () |
629 | "Free the decoded MIME parts." | |
630 | (let ((mime-data (gethash (current-buffer) mh-globals-hash))) | |
631 | ;; This is for Emacs, what about XEmacs? | |
924df208 | 632 | (mh-funcall-if-exists remove-images (point-min) (point-max)) |
bdcfe844 BW |
633 | (when mime-data |
634 | (mm-destroy-parts (mh-mime-handles mime-data)) | |
635 | (remhash (current-buffer) mh-globals-hash)))) | |
636 | ||
c3d9274a | 637 | ;;;###mh-autoload |
bdcfe844 BW |
638 | (defun mh-destroy-postponed-handles () |
639 | "Free MIME data for externally displayed mime parts." | |
640 | (let ((mime-data (mh-buffer-data))) | |
641 | (when mime-data | |
642 | (mm-destroy-parts (mh-mime-handles mime-data))) | |
643 | (remhash (current-buffer) mh-globals-hash))) | |
644 | ||
645 | (defun mh-handle-set-external-undisplayer (folder handle function) | |
646 | "Replacement for `mm-handle-set-external-undisplayer'. | |
647 | This is only called in recent versions of Gnus. The MIME handles are stored | |
648 | in data structures corresponding to MH-E folder buffer FOLDER instead of in | |
649 | Gnus (as in the original). The MIME part, HANDLE is associated with the | |
650 | undisplayer FUNCTION." | |
651 | (if (mm-keep-viewer-alive-p handle) | |
652 | (let ((new-handle (copy-sequence handle))) | |
c3d9274a BW |
653 | (mm-handle-set-undisplayer new-handle function) |
654 | (mm-handle-set-undisplayer handle nil) | |
bdcfe844 BW |
655 | (save-excursion |
656 | (set-buffer folder) | |
657 | (push new-handle (mh-mime-handles (mh-buffer-data))))) | |
658 | (mm-handle-set-undisplayer handle function))) | |
659 | ||
660 | \f | |
661 | ||
662 | ;;; MIME transformations | |
c3d9274a | 663 | (eval-when-compile (require 'font-lock)) |
bdcfe844 | 664 | |
c3d9274a | 665 | ;;;###mh-autoload |
bdcfe844 BW |
666 | (defun mh-add-missing-mime-version-header () |
667 | "Some mail programs don't put a MIME-Version header. | |
668 | I have seen this only in spam, so maybe we shouldn't fix this ;-)" | |
669 | (save-excursion | |
670 | (goto-char (point-min)) | |
671 | (when (and (message-fetch-field "content-type") | |
672 | (not (message-fetch-field "mime-version"))) | |
673 | (when (search-forward "\n\n" nil t) | |
674 | (forward-line -1) | |
675 | (insert "MIME-Version: 1.0\n"))))) | |
676 | ||
c3d9274a | 677 | ;;;###mh-autoload |
bdcfe844 BW |
678 | (defun mh-display-smileys () |
679 | "Function to display smileys." | |
c3d9274a BW |
680 | (when (and mh-graphical-smileys-flag |
681 | (fboundp 'smiley-region) | |
682 | (boundp 'font-lock-maximum-size) | |
924df208 | 683 | font-lock-maximum-size |
c3d9274a | 684 | (>= (/ font-lock-maximum-size 8) (buffer-size))) |
bdcfe844 BW |
685 | (smiley-region (point-min) (point-max)))) |
686 | ||
c3d9274a | 687 | ;;;###mh-autoload |
bdcfe844 BW |
688 | (defun mh-display-emphasis () |
689 | "Function to display graphical emphasis." | |
c3d9274a | 690 | (when (and mh-graphical-emphasis-flag |
924df208 BW |
691 | (if font-lock-maximum-size |
692 | (>= (/ font-lock-maximum-size 8) (buffer-size)))) | |
c3d9274a | 693 | (flet ((article-goto-body ())) ; shadow this function to do nothing |
bdcfe844 BW |
694 | (save-excursion |
695 | (goto-char (point-min)) | |
696 | (article-emphasize))))) | |
697 | ||
698 | ;; Copied from gnus-art.el (should be checked for other cool things that can | |
699 | ;; be added to the buttons) | |
700 | (defvar mh-mime-button-commands | |
701 | '((mh-press-button "\r" "Toggle Display"))) | |
702 | (defvar mh-mime-button-map | |
703 | (let ((map (make-sparse-keymap))) | |
704 | (unless (>= (string-to-number emacs-version) 21) | |
705 | ;; XEmacs doesn't care. | |
706 | (set-keymap-parent map mh-show-mode-map)) | |
924df208 BW |
707 | (mh-do-in-gnu-emacs |
708 | (define-key map [mouse-2] 'mh-push-button)) | |
709 | (mh-do-in-xemacs | |
710 | (define-key map '(button2) 'mh-push-button)) | |
bdcfe844 BW |
711 | (dolist (c mh-mime-button-commands) |
712 | (define-key map (cadr c) (car c))) | |
713 | map)) | |
714 | (defvar mh-mime-button-line-format-alist | |
715 | '((?T long-type ?s) | |
716 | (?d description ?s) | |
717 | (?p index ?s) | |
718 | (?e dots ?s))) | |
719 | (defvar mh-mime-button-line-format "%{%([%p. %d%T]%)%}%e\n") | |
720 | (defvar mh-mime-security-button-pressed nil) | |
721 | (defvar mh-mime-security-button-line-format "%{%([[%t:%i]%D]%)%}\n") | |
722 | (defvar mh-mime-security-button-end-line-format "%{%([[End of %t]%D]%)%}\n") | |
723 | (defvar mh-mime-security-button-line-format-alist | |
724 | '((?t type ?s) | |
725 | (?i info ?s) | |
726 | (?d details ?s) | |
727 | (?D pressed-details ?s))) | |
728 | (defvar mh-mime-security-button-map | |
729 | (let ((map (make-sparse-keymap))) | |
730 | (unless (>= (string-to-number emacs-version) 21) | |
731 | (set-keymap-parent map mh-show-mode-map)) | |
732 | (define-key map "\r" 'mh-press-button) | |
924df208 BW |
733 | (mh-do-in-gnu-emacs |
734 | (define-key map [mouse-2] 'mh-push-button)) | |
735 | (mh-do-in-xemacs | |
736 | (define-key map '(button2) 'mh-push-button)) | |
bdcfe844 BW |
737 | map)) |
738 | ||
739 | (defvar mh-mime-save-parts-directory nil | |
740 | "Default to use for `mh-mime-save-parts-default-directory'. | |
741 | Set from last use.") | |
742 | ||
c3d9274a | 743 | ;;;###mh-autoload |
bdcfe844 BW |
744 | (defun mh-mime-save-parts (arg) |
745 | "Store the MIME parts of the current message. | |
746 | If ARG, prompt for directory, else use that specified by the variable | |
747 | `mh-mime-save-parts-default-directory'. These directories may be superseded by | |
748 | mh_profile directives, since this function calls on mhstore or mhn to do the | |
749 | actual storing." | |
750 | (interactive "P") | |
751 | (let ((msg (if (eq major-mode 'mh-show-mode) | |
752 | (mh-show-buffer-message-number) | |
753 | (mh-get-msg-num t))) | |
754 | (folder (if (eq major-mode 'mh-show-mode) | |
755 | mh-show-folder-buffer | |
756 | mh-current-folder)) | |
757 | (command (if mh-nmh-flag "mhstore" "mhn")) | |
758 | (directory | |
759 | (cond | |
760 | ((and (or arg | |
761 | (equal nil mh-mime-save-parts-default-directory) | |
762 | (equal t mh-mime-save-parts-default-directory)) | |
763 | (not mh-mime-save-parts-directory)) | |
764 | (read-file-name "Store in what directory? " nil nil t nil)) | |
765 | ((and (or arg | |
766 | (equal t mh-mime-save-parts-default-directory)) | |
767 | mh-mime-save-parts-directory) | |
768 | (read-file-name (format | |
769 | "Store in what directory? [%s] " | |
770 | mh-mime-save-parts-directory) | |
771 | "" mh-mime-save-parts-directory t "")) | |
772 | ((stringp mh-mime-save-parts-default-directory) | |
773 | mh-mime-save-parts-default-directory) | |
774 | (t | |
775 | mh-mime-save-parts-directory)))) | |
776 | (if (and (equal directory "") mh-mime-save-parts-directory) | |
777 | (setq directory mh-mime-save-parts-directory)) | |
778 | (if (not (file-directory-p directory)) | |
779 | (message "No directory specified.") | |
780 | (if (equal nil mh-mime-save-parts-default-directory) | |
781 | (setq mh-mime-save-parts-directory directory)) | |
782 | (save-excursion | |
924df208 | 783 | (set-buffer (get-buffer-create mh-log-buffer)) |
bdcfe844 BW |
784 | (cd directory) |
785 | (setq mh-mime-save-parts-directory directory) | |
924df208 BW |
786 | (let ((initial-size (mh-truncate-log-buffer))) |
787 | (apply 'call-process | |
788 | (expand-file-name command mh-progs) nil t nil | |
789 | (mh-list-to-string (list folder msg "-auto"))) | |
790 | (if (> (buffer-size) initial-size) | |
791 | (save-window-excursion | |
792 | (switch-to-buffer-other-window mh-log-buffer) | |
793 | (sit-for 3)))))))) | |
bdcfe844 BW |
794 | |
795 | ;; Avoid errors if gnus-sum isn't loaded yet... | |
796 | (defvar gnus-newsgroup-charset nil) | |
797 | (defvar gnus-newsgroup-name nil) | |
798 | ||
924df208 BW |
799 | (defun mh-decode-message-body () |
800 | "Decode message based on charset. | |
801 | If message has been encoded for transfer take that into account." | |
802 | (let* ((ct (ignore-errors (mail-header-parse-content-type | |
803 | (message-fetch-field "Content-Type" t)))) | |
804 | (charset (mail-content-type-get ct 'charset)) | |
805 | (cte (message-fetch-field "Content-Transfer-Encoding"))) | |
806 | (when (stringp cte) (setq cte (mail-header-strip cte))) | |
807 | (when (or (not ct) (equal (car ct) "text/plain")) | |
808 | (save-restriction | |
809 | (narrow-to-region (min (1+ (mh-mail-header-end)) (point-max)) | |
810 | (point-max)) | |
811 | (mm-decode-body charset | |
812 | (and cte (intern (downcase | |
813 | (gnus-strip-whitespace cte)))) | |
814 | (car ct)))))) | |
815 | ||
816 | ;;;###mh-autoload | |
817 | (defun mh-decode-message-header () | |
818 | "Decode RFC2047 encoded message header fields." | |
819 | (when mh-decode-mime-flag | |
820 | (let ((buffer-read-only nil)) | |
821 | (rfc2047-decode-region (point-min) (mh-mail-header-end))))) | |
822 | ||
c3d9274a | 823 | ;;;###mh-autoload |
bdcfe844 BW |
824 | (defun mh-mime-display (&optional pre-dissected-handles) |
825 | "Display (and possibly decode) MIME handles. | |
826 | Optional argument, PRE-DISSECTED-HANDLES is a list of MIME handles. If | |
827 | present they are displayed otherwise the buffer is parsed and then | |
828 | displayed." | |
829 | (let ((handles ()) | |
924df208 BW |
830 | (folder mh-show-folder-buffer) |
831 | (raw-message-data (buffer-string))) | |
c3d9274a BW |
832 | (flet ((mm-handle-set-external-undisplayer |
833 | (handle function) | |
834 | (mh-handle-set-external-undisplayer folder handle function))) | |
924df208 BW |
835 | (goto-char (point-min)) |
836 | (unless (search-forward "\n\n" nil t) | |
837 | (goto-char (point-max)) | |
838 | (insert "\n\n")) | |
839 | ||
840 | (condition-case err | |
841 | (progn | |
842 | ;; If needed dissect the current buffer | |
843 | (if pre-dissected-handles | |
844 | (setq handles pre-dissected-handles) | |
845 | (setq handles (or (mm-dissect-buffer nil) (mm-uu-dissect))) | |
846 | (setf (mh-mime-handles (mh-buffer-data)) | |
847 | (mm-merge-handles handles | |
848 | (mh-mime-handles (mh-buffer-data)))) | |
849 | (unless handles (mh-decode-message-body))) | |
850 | ||
851 | (when (and handles | |
852 | (or (not (stringp (car handles))) (cdr handles))) | |
853 | ;; Goto start of message body | |
854 | (goto-char (point-min)) | |
855 | (or (search-forward "\n\n" nil t) (goto-char (point-max))) | |
bdcfe844 | 856 | |
924df208 BW |
857 | ;; Delete the body |
858 | (delete-region (point) (point-max)) | |
bdcfe844 | 859 | |
924df208 BW |
860 | ;; Display the MIME handles |
861 | (mh-mime-display-part handles))) | |
862 | (error | |
863 | (message "Please report this error. The error message is:\n %s" | |
864 | (error-message-string err)) | |
865 | (delete-region (point-min) (point-max)) | |
866 | (insert raw-message-data)))))) | |
bdcfe844 BW |
867 | |
868 | (defun mh-mime-display-part (handle) | |
869 | "Decides the viewer to call based on the type of HANDLE." | |
870 | (cond ((null handle) nil) | |
871 | ((not (stringp (car handle))) | |
872 | (mh-mime-display-single handle)) | |
873 | ((equal (car handle) "multipart/alternative") | |
874 | (mh-mime-display-alternative (cdr handle))) | |
875 | ((and mh-gnus-pgp-support-flag | |
876 | (or (equal (car handle) "multipart/signed") | |
877 | (equal (car handle) "multipart/encrypted"))) | |
878 | (mh-mime-display-security handle)) | |
879 | (t (mh-mime-display-mixed (cdr handle))))) | |
880 | ||
881 | (defun mh-mime-display-alternative (handles) | |
882 | "Choose among the alternatives, HANDLES the part that will be displayed. | |
883 | If no part is preferred then all the parts are displayed." | |
884 | (let ((preferred (mm-preferred-alternative handles))) | |
885 | (cond ((and preferred (stringp (car preferred))) | |
886 | (mh-mime-display-part preferred)) | |
887 | (preferred | |
888 | (save-restriction | |
889 | (narrow-to-region (point) (if (eobp) (point) (1+ (point)))) | |
c3d9274a | 890 | (mh-mime-display-single preferred) |
bdcfe844 BW |
891 | (goto-char (point-max)))) |
892 | (t (mh-mime-display-mixed handles))))) | |
893 | ||
894 | (defun mh-mime-display-mixed (handles) | |
895 | "Display the list of MIME parts, HANDLES recursively." | |
896 | (mapcar #'mh-mime-display-part handles)) | |
897 | ||
898 | (defun mh-mime-part-index (handle) | |
899 | "Generate the button number for MIME part, HANDLE. | |
900 | Notice that a hash table is used to display the same number when buttons need | |
901 | to be displayed multiple times (for instance when nested messages are | |
902 | opened)." | |
903 | (or (gethash handle (mh-mime-part-index-hash (mh-buffer-data))) | |
904 | (setf (gethash handle (mh-mime-part-index-hash (mh-buffer-data))) | |
905 | (incf (mh-mime-parts-count (mh-buffer-data)))))) | |
906 | ||
907 | ;;; Avoid compiler warnings for XEmacs functions... | |
908 | (eval-when (compile) | |
c3d9274a BW |
909 | (loop for function in '(glyph-width window-pixel-width |
910 | glyph-height window-pixel-height) | |
911 | do (or (fboundp function) (defalias function 'ignore)))) | |
bdcfe844 BW |
912 | |
913 | (defun mh-small-image-p (handle) | |
914 | "Decide whether HANDLE is a \"small\" image that can be displayed inline. | |
915 | This is only useful if a Content-Disposition header is not present." | |
916 | (let ((media-test (caddr (assoc (car (mm-handle-type handle)) | |
917 | mh-mm-inline-media-tests))) | |
918 | (mm-inline-large-images t)) | |
919 | (and media-test | |
920 | (equal (mm-handle-media-supertype handle) "image") | |
c3d9274a BW |
921 | (funcall media-test handle) ; Since mm-inline-large-images is T, |
922 | ; this only tells us if the image is | |
923 | ; something that emacs can display | |
bdcfe844 BW |
924 | (let* ((image (mm-get-image handle))) |
925 | (cond ((fboundp 'glyph-width) | |
926 | ;; XEmacs -- totally untested, copied from gnus | |
924df208 BW |
927 | (and (mh-funcall-if-exists glyphp image) |
928 | (< (glyph-width image) | |
bdcfe844 BW |
929 | (or mh-max-inline-image-width |
930 | (window-pixel-width))) | |
931 | (< (glyph-height image) | |
932 | (or mh-max-inline-image-height | |
933 | (window-pixel-height))))) | |
934 | ((fboundp 'image-size) | |
935 | ;; Emacs21 -- copied from gnus | |
924df208 BW |
936 | (let ((size (mh-funcall-if-exists image-size image))) |
937 | (and size | |
938 | (< (cdr size) | |
bdcfe844 BW |
939 | (or mh-max-inline-image-height |
940 | (1- (window-height)))) | |
941 | (< (car size) | |
942 | (or mh-max-inline-image-width (window-width)))))) | |
943 | (t | |
944 | ;; Can't show image inline | |
945 | nil)))))) | |
946 | ||
c3d9274a BW |
947 | (defun mh-inline-vcard-p (handle) |
948 | "Decide if HANDLE is a vcard that must be displayed inline." | |
949 | (let ((type (mm-handle-type handle))) | |
924df208 BW |
950 | (and (or (featurep 'vcard) (fboundp 'vcard-pretty-print)) |
951 | (consp type) | |
c3d9274a BW |
952 | (equal (car type) "text/x-vcard") |
953 | (save-excursion | |
954 | (save-restriction | |
955 | (widen) | |
956 | (goto-char (point-min)) | |
957 | (not (re-search-forward "^-- $" nil t))))))) | |
958 | ||
bdcfe844 BW |
959 | (defun mh-mime-display-single (handle) |
960 | "Display a leaf node, HANDLE in the MIME tree." | |
961 | (let* ((type (mm-handle-media-type handle)) | |
962 | (small-image-flag (mh-small-image-p handle)) | |
963 | (attachmentp (equal (car (mm-handle-disposition handle)) | |
964 | "attachment")) | |
965 | (inlinep (and (equal (car (mm-handle-disposition handle)) "inline") | |
966 | (mm-inlinable-p handle) | |
967 | (mm-inlined-p handle))) | |
c3d9274a BW |
968 | (displayp (or inlinep ; show if inline OR |
969 | (mh-inline-vcard-p handle); inline vcard OR | |
970 | (and (not attachmentp) ; if not an attachment | |
971 | (or small-image-flag ; and small image | |
972 | ; and user wants inline | |
bdcfe844 BW |
973 | (and (not (equal |
974 | (mm-handle-media-supertype handle) | |
975 | "image")) | |
976 | (mm-inlinable-p handle) | |
977 | (mm-inlined-p handle))))))) | |
978 | (save-restriction | |
979 | (narrow-to-region (point) (if (eobp) (point) (1+ (point)))) | |
980 | (cond ((and mh-gnus-pgp-support-flag | |
981 | (equal type "application/pgp-signature")) | |
c3d9274a | 982 | nil) ; skip signatures as they are already handled... |
bdcfe844 BW |
983 | ((not displayp) |
984 | (insert "\n") | |
985 | (mh-insert-mime-button handle (mh-mime-part-index handle) nil)) | |
986 | ((and displayp (not mh-display-buttons-for-inline-parts-flag)) | |
987 | (or (mm-display-part handle) (mm-display-part handle))) | |
988 | ((and displayp mh-display-buttons-for-inline-parts-flag) | |
989 | (insert "\n") | |
990 | (mh-insert-mime-button handle (mh-mime-part-index handle) nil) | |
991 | (forward-line -1) | |
992 | (mh-mm-display-part handle))) | |
993 | (goto-char (point-max))))) | |
994 | ||
924df208 BW |
995 | (mh-do-in-xemacs |
996 | (defvar dots) | |
997 | (defvar type)) | |
998 | ||
bdcfe844 BW |
999 | (defun mh-insert-mime-button (handle index displayed) |
1000 | "Insert MIME button for HANDLE. | |
1001 | INDEX is the part number that will be DISPLAYED. It is also used by commands | |
1002 | like \"K v\" which operate on individual MIME parts." | |
1003 | ;; The button could be displayed by a previous decode. In that case | |
1004 | ;; undisplay it if we need a hidden button. | |
1005 | (when (and (mm-handle-displayed-p handle) (not displayed)) | |
1006 | (mm-display-part handle)) | |
1007 | (let ((name (or (mail-content-type-get (mm-handle-type handle) 'name) | |
1008 | (mail-content-type-get (mm-handle-disposition handle) | |
1009 | 'filename) | |
1010 | (mail-content-type-get (mm-handle-type handle) 'url) | |
1011 | "")) | |
1012 | (type (mm-handle-media-type handle)) | |
1013 | (description (mail-decode-encoded-word-string | |
1014 | (or (mm-handle-description handle) ""))) | |
1015 | (dots (if (or displayed (mm-handle-displayed-p handle)) " " "...")) | |
1016 | long-type begin end) | |
1017 | (if (string-match ".*/" name) (setq name (substring name (match-end 0)))) | |
1018 | (setq long-type (concat type (and (not (equal name "")) | |
1019 | (concat "; " name)))) | |
1020 | (unless (equal description "") | |
1021 | (setq long-type (concat " --- " long-type))) | |
1022 | (unless (bolp) (insert "\n")) | |
1023 | (setq begin (point)) | |
1024 | (gnus-eval-format | |
1025 | mh-mime-button-line-format mh-mime-button-line-format-alist | |
1026 | `(,@(gnus-local-map-property mh-mime-button-map) | |
c3d9274a BW |
1027 | mh-callback mh-mm-display-part |
1028 | mh-part ,index | |
1029 | mh-data ,handle)) | |
bdcfe844 BW |
1030 | (setq end (point)) |
1031 | (widget-convert-button | |
1032 | 'link begin end | |
1033 | :mime-handle handle | |
1034 | :action 'mh-widget-press-button | |
1035 | :button-keymap mh-mime-button-map | |
1036 | :help-echo | |
1037 | "Mouse-2 click or press RET (in show buffer) to toggle display"))) | |
1038 | ||
1039 | ;; There is a bug in Gnus inline image display due to which an extra line | |
1040 | ;; gets inserted every time it is viewed. To work around that problem we are | |
1041 | ;; using an extra property 'mh-region to remember the region that is added | |
1042 | ;; when the button is clicked. The region is then deleted to make sure that | |
1043 | ;; no extra lines get inserted. | |
1044 | (defun mh-mm-display-part (handle) | |
1045 | "Toggle display of button for MIME part, HANDLE." | |
1046 | (beginning-of-line) | |
1047 | (let ((id (get-text-property (point) 'mh-part)) | |
1048 | (point (point)) | |
1049 | (window (selected-window)) | |
1050 | (mail-parse-charset 'nil) | |
1051 | (mail-parse-ignored-charsets nil) | |
1052 | region buffer-read-only) | |
1053 | (save-excursion | |
1054 | (unwind-protect | |
1055 | (let ((win (get-buffer-window (current-buffer) t))) | |
1056 | (when win | |
1057 | (select-window win)) | |
1058 | (goto-char point) | |
1059 | ||
1060 | (if (mm-handle-displayed-p handle) | |
1061 | ;; This will remove the part. | |
1062 | (progn | |
1063 | ;; Delete the button and displayed part (if any) | |
1064 | (let ((region (get-text-property point 'mh-region))) | |
924df208 BW |
1065 | (when (and region (fboundp 'remove-images)) |
1066 | (mh-funcall-if-exists | |
1067 | remove-images (car region) (cdr region))) | |
bdcfe844 BW |
1068 | (mm-display-part handle) |
1069 | (when region | |
1070 | (delete-region (car region) (cdr region)))) | |
1071 | ;; Delete button (if it still remains). This happens for | |
1072 | ;; externally displayed parts where the previous step does | |
1073 | ;; nothing. | |
1074 | (unless (eolp) | |
1075 | (delete-region (point) (progn (forward-line) (point))))) | |
1076 | (save-restriction | |
1077 | (delete-region (point) (progn (forward-line 1) (point))) | |
1078 | (narrow-to-region (point) (point)) | |
1079 | ;; Maybe we need another unwind-protect here. | |
1080 | (when (equal (mm-handle-media-supertype handle) "image") | |
1081 | (insert "\n")) | |
1082 | (when (and (not (eq (ignore-errors (mm-display-part handle)) | |
1083 | 'inline)) | |
1084 | (equal (mm-handle-media-supertype handle) | |
1085 | "image")) | |
1086 | (goto-char (point-min)) | |
1087 | (delete-char 1)) | |
1088 | (when (equal (mm-handle-media-supertype handle) "text") | |
1089 | (when (eq mh-highlight-citation-p 'gnus) | |
1090 | (mh-gnus-article-highlight-citation)) | |
1091 | (mh-display-smileys) | |
1092 | (mh-display-emphasis)) | |
1093 | (setq region (cons (progn (goto-char (point-min)) | |
1094 | (point-marker)) | |
1095 | (progn (goto-char (point-max)) | |
1096 | (point-marker))))))) | |
1097 | (when (window-live-p window) | |
1098 | (select-window window)) | |
1099 | (goto-char point) | |
1100 | (beginning-of-line) | |
1101 | (mh-insert-mime-button handle id (mm-handle-displayed-p handle)) | |
1102 | (goto-char point) | |
1103 | (when region | |
1104 | (add-text-properties (line-beginning-position) (line-end-position) | |
1105 | `(mh-region ,region))))))) | |
1106 | ||
c3d9274a | 1107 | ;;;###mh-autoload |
bdcfe844 BW |
1108 | (defun mh-press-button () |
1109 | "Press MIME button. | |
1110 | If the MIME part is visible then it is removed. Otherwise the part is | |
1111 | displayed." | |
1112 | (interactive) | |
1113 | (let ((mm-inline-media-tests mh-mm-inline-media-tests) | |
1114 | (data (get-text-property (point) 'mh-data)) | |
1115 | (function (get-text-property (point) 'mh-callback)) | |
1116 | (buffer-read-only nil) | |
1117 | (folder mh-show-folder-buffer)) | |
c3d9274a BW |
1118 | (flet ((mm-handle-set-external-undisplayer |
1119 | (handle function) | |
1120 | (mh-handle-set-external-undisplayer folder handle function))) | |
bdcfe844 BW |
1121 | (when (and function (eolp)) |
1122 | (backward-char)) | |
1123 | (unwind-protect (and function (funcall function data)) | |
1124 | (set-buffer-modified-p nil))))) | |
1125 | ||
c3d9274a | 1126 | ;;;###mh-autoload |
bdcfe844 BW |
1127 | (defun mh-push-button (event) |
1128 | "Click MIME button for EVENT. | |
1129 | If the MIME part is visible then it is removed. Otherwise the part is | |
1130 | displayed. This function is called when the mouse is used to click the MIME | |
1131 | button." | |
1132 | (interactive "e") | |
924df208 BW |
1133 | (save-excursion |
1134 | (let* ((event-window | |
1135 | (or (mh-funcall-if-exists posn-window (event-start event));GNU Emacs | |
1136 | (mh-funcall-if-exists event-window event))) ;XEmacs | |
1137 | (event-position | |
1138 | (or (mh-funcall-if-exists posn-point (event-start event)) ;GNU Emacs | |
1139 | (mh-funcall-if-exists event-closest-point event))) ;XEmacs | |
1140 | (original-window (selected-window)) | |
1141 | (original-position (progn | |
1142 | (set-buffer (window-buffer event-window)) | |
1143 | (set-marker (make-marker) (point)))) | |
1144 | (folder mh-show-folder-buffer) | |
1145 | (mm-inline-media-tests mh-mm-inline-media-tests) | |
1146 | (data (get-text-property event-position 'mh-data)) | |
1147 | (function (get-text-property event-position 'mh-callback)) | |
1148 | (buffer-read-only nil)) | |
1149 | (unwind-protect | |
1150 | (progn | |
1151 | (select-window event-window) | |
1152 | (flet ((mm-handle-set-external-undisplayer (handle func) | |
1153 | (mh-handle-set-external-undisplayer folder handle func))) | |
1154 | (goto-char event-position) | |
1155 | (and function (funcall function data)))) | |
1156 | (set-buffer-modified-p nil) | |
1157 | (goto-char original-position) | |
1158 | (set-marker original-position nil) | |
1159 | (select-window original-window))))) | |
bdcfe844 | 1160 | |
c3d9274a | 1161 | ;;;###mh-autoload |
bdcfe844 BW |
1162 | (defun mh-mime-save-part () |
1163 | "Save MIME part at point." | |
1164 | (interactive) | |
1165 | (let ((data (get-text-property (point) 'mh-data))) | |
1166 | (when data | |
1167 | (let ((mm-default-directory mh-mime-save-parts-directory)) | |
c3d9274a BW |
1168 | (mh-mm-save-part data) |
1169 | (setq mh-mime-save-parts-directory mm-default-directory))))) | |
bdcfe844 | 1170 | |
c3d9274a | 1171 | ;;;###mh-autoload |
bdcfe844 BW |
1172 | (defun mh-mime-inline-part () |
1173 | "Toggle display of the raw MIME part." | |
1174 | (interactive) | |
1175 | (let* ((buffer-read-only nil) | |
1176 | (data (get-text-property (point) 'mh-data)) | |
1177 | (inserted-flag (get-text-property (point) 'mh-mime-inserted)) | |
1178 | (displayed-flag (mm-handle-displayed-p data)) | |
1179 | (point (point)) | |
1180 | start end) | |
1181 | (cond ((and data (not inserted-flag) (not displayed-flag)) | |
1182 | (let ((contents (mm-get-part data))) | |
1183 | (add-text-properties (line-beginning-position) (line-end-position) | |
1184 | '(mh-mime-inserted t)) | |
1185 | (setq start (point-marker)) | |
1186 | (forward-line 1) | |
1187 | (mm-insert-inline data contents) | |
1188 | (setq end (point-marker)) | |
1189 | (add-text-properties | |
1190 | start (progn (goto-char start) (line-end-position)) | |
1191 | `(mh-region (,start . ,end))))) | |
1192 | ((and data (or inserted-flag displayed-flag)) | |
1193 | (mh-press-button) | |
1194 | (message "MIME part already inserted"))) | |
1195 | (goto-char point) | |
1196 | (set-buffer-modified-p nil))) | |
1197 | ||
1198 | (defun mh-widget-press-button (widget el) | |
1199 | "Callback for widget, WIDGET. | |
1200 | Parameter EL is unused." | |
1201 | (goto-char (widget-get widget :from)) | |
1202 | (mh-press-button)) | |
1203 | ||
1204 | (defun mh-mime-display-security (handle) | |
1205 | "Display PGP encrypted/signed message, HANDLE." | |
1206 | (insert "\n") | |
1207 | (save-restriction | |
1208 | (narrow-to-region (point) (point)) | |
1209 | (mh-insert-mime-security-button handle) | |
1210 | (mh-mime-display-mixed (cdr handle)) | |
1211 | (insert "\n") | |
1212 | (let ((mh-mime-security-button-line-format | |
c3d9274a | 1213 | mh-mime-security-button-end-line-format)) |
bdcfe844 BW |
1214 | (mh-insert-mime-security-button handle)) |
1215 | (mm-set-handle-multipart-parameter | |
1216 | handle 'mh-region | |
1217 | (cons (set-marker (make-marker) (point-min)) | |
1218 | (set-marker (make-marker) (point-max)))))) | |
1219 | ||
1220 | ;;; I rewrote the security part because Gnus doesn't seem to ever minimize | |
1221 | ;;; the button. That is once the mime-security button is pressed there seems | |
1222 | ;;; to be no way of getting rid of the inserted text. | |
1223 | (defun mh-mime-security-show-details (handle) | |
1224 | "Toggle display of detailed security info for HANDLE." | |
1225 | (let ((details (mm-handle-multipart-ctl-parameter handle 'gnus-details))) | |
1226 | (when details | |
1227 | (let ((mh-mime-security-button-pressed | |
c3d9274a | 1228 | (not (get-text-property (point) 'mh-button-pressed))) |
bdcfe844 | 1229 | (mh-mime-security-button-line-format |
c3d9274a | 1230 | (get-text-property (point) 'mh-line-format))) |
bdcfe844 BW |
1231 | (forward-char -1) |
1232 | (while (eq (get-text-property (point) 'mh-line-format) | |
1233 | mh-mime-security-button-line-format) | |
1234 | (forward-char -1)) | |
1235 | (forward-char) | |
1236 | (save-restriction | |
1237 | (narrow-to-region (point) (point)) | |
1238 | (mh-insert-mime-security-button handle)) | |
1239 | (delete-region | |
1240 | (point) | |
1241 | (or (text-property-not-all | |
1242 | (point) (point-max) | |
1243 | 'mh-line-format mh-mime-security-button-line-format) | |
1244 | (point-max))) | |
1245 | (forward-line -1))))) | |
1246 | ||
1247 | (defun mh-mime-security-press-button (handle) | |
1248 | "Callback from security button for part HANDLE." | |
1249 | (when (mm-handle-multipart-ctl-parameter handle 'gnus-info) | |
1250 | (mh-mime-security-show-details handle))) | |
1251 | ||
1252 | ;; These variables should already be initialized in mm-decode.el if we have a | |
1253 | ;; recent enough Gnus. The defvars are here to avoid compiler warnings. | |
1254 | (defvar mm-verify-function-alist nil) | |
1255 | (defvar mm-decrypt-function-alist nil) | |
1256 | ||
1257 | (defvar pressed-details) | |
1258 | ||
1259 | (defun mh-insert-mime-security-button (handle) | |
1260 | "Display buttons for PGP message, HANDLE." | |
1261 | (let* ((protocol (mm-handle-multipart-ctl-parameter handle 'protocol)) | |
1262 | (crypto-type (or (nth 2 (assoc protocol mm-verify-function-alist)) | |
1263 | (nth 2 (assoc protocol mm-decrypt-function-alist)) | |
1264 | "Unknown")) | |
1265 | (type (concat crypto-type | |
1266 | (if (equal (car handle) "multipart/signed") | |
1267 | " Signed" " Encrypted") | |
1268 | " Part")) | |
1269 | (info (or (mm-handle-multipart-ctl-parameter handle 'gnus-info) | |
1270 | "Undecided")) | |
1271 | (details (mm-handle-multipart-ctl-parameter handle 'gnus-details)) | |
1272 | pressed-details begin end) | |
1273 | (setq details (if details (concat "\n" details) "")) | |
1274 | (setq pressed-details (if mh-mime-security-button-pressed details "")) | |
1275 | (unless (bolp) (insert "\n")) | |
1276 | (setq begin (point)) | |
1277 | (gnus-eval-format | |
1278 | mh-mime-security-button-line-format | |
1279 | mh-mime-security-button-line-format-alist | |
1280 | `(,@(gnus-local-map-property mh-mime-security-button-map) | |
c3d9274a BW |
1281 | mh-button-pressed ,mh-mime-security-button-pressed |
1282 | mh-callback mh-mime-security-press-button | |
1283 | mh-line-format ,mh-mime-security-button-line-format | |
1284 | mh-data ,handle)) | |
bdcfe844 BW |
1285 | (setq end (point)) |
1286 | (widget-convert-button 'link begin end | |
1287 | :mime-handle handle | |
1288 | :action 'mh-widget-press-button | |
1289 | :button-keymap mh-mime-security-button-map | |
1290 | :help-echo "Mouse-2 click or press RET (in show buffer) to see security details.") | |
1291 | (when (equal info "Failed") | |
1292 | (let* ((type (if (equal (car handle) "multipart/signed") | |
1293 | "verification" "decryption")) | |
1294 | (warning (if (equal type "decryption") | |
1295 | "(passphrase may be incorrect)" ""))) | |
1296 | (message "%s %s failed %s" crypto-type type warning))))) | |
1297 | ||
1298 | (defun mh-mm-inline-message (handle) | |
1299 | "Display message, HANDLE. | |
1300 | The function decodes the message and displays it. It avoids decoding the same | |
1301 | message multiple times." | |
1302 | (let ((b (point)) | |
bdcfe844 BW |
1303 | (clean-message-header mh-clean-message-header-flag) |
1304 | (invisible-headers mh-invisible-headers) | |
1305 | (visible-headers mh-visible-headers)) | |
bdcfe844 BW |
1306 | (save-excursion |
1307 | (save-restriction | |
1308 | (narrow-to-region b b) | |
1309 | (mm-insert-part handle) | |
1310 | (mh-mime-display | |
1311 | (or (gethash handle (mh-mime-handles-cache (mh-buffer-data))) | |
1312 | (setf (gethash handle (mh-mime-handles-cache (mh-buffer-data))) | |
1313 | (let ((handles (or (mm-dissect-buffer nil) | |
1314 | (mm-uu-dissect)))) | |
1315 | (setf (mh-mime-handles (mh-buffer-data)) | |
1316 | (mm-merge-handles | |
1317 | handles (mh-mime-handles (mh-buffer-data)))) | |
1318 | handles)))) | |
1319 | ||
1320 | (goto-char (point-min)) | |
924df208 | 1321 | (mh-show-xface) |
bdcfe844 BW |
1322 | (cond (clean-message-header |
1323 | (mh-clean-msg-header (point-min) | |
1324 | invisible-headers | |
1325 | visible-headers) | |
1326 | (goto-char (point-min))) | |
1327 | (t | |
1328 | (mh-start-of-uncleaned-message))) | |
924df208 | 1329 | (mh-decode-message-header) |
bdcfe844 BW |
1330 | (mh-show-addr) |
1331 | ;; The other highlighting types don't need anything special | |
1332 | (when (eq mh-highlight-citation-p 'gnus) | |
1333 | (mh-gnus-article-highlight-citation)) | |
1334 | (goto-char (point-min)) | |
1335 | (insert "\n------- Forwarded Message\n\n") | |
1336 | (mh-display-smileys) | |
1337 | (mh-display-emphasis) | |
1338 | (mm-handle-set-undisplayer | |
1339 | handle | |
1340 | `(lambda () | |
1341 | (let (buffer-read-only) | |
1342 | (if (fboundp 'remove-specifier) | |
1343 | ;; This is only valid on XEmacs. | |
1344 | (mapcar (lambda (prop) | |
1345 | (remove-specifier | |
1346 | (face-property 'default prop) (current-buffer))) | |
1347 | '(background background-pixmap foreground))) | |
1348 | (delete-region ,(point-min-marker) ,(point-max-marker))))))))) | |
1349 | ||
1350 | (provide 'mh-mime) | |
1351 | ||
1352 | ;;; Local Variables: | |
c3d9274a | 1353 | ;;; indent-tabs-mode: nil |
bdcfe844 BW |
1354 | ;;; sentence-end-double-space: nil |
1355 | ;;; End: | |
1356 | ||
60370d40 | 1357 | ;;; mh-mime.el ends here |