1 ;;; mh-mime.el --- MH-E support for composing MIME messages
3 ;; Copyright (C) 1993, 1995,
4 ;; 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
6 ;; Author: Bill Wohler <wohler@newt.com>
7 ;; Maintainer: Bill Wohler <wohler@newt.com>
11 ;; This file is part of GNU Emacs.
13 ;; GNU Emacs is free software; you can redistribute it and/or modify
14 ;; it under the terms of the GNU General Public License as published by
15 ;; the Free Software Foundation; either version 2, or (at your option)
18 ;; GNU Emacs is distributed in the hope that it will be useful,
19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 ;; GNU General Public License for more details.
23 ;; You should have received a copy of the GNU General Public License
24 ;; along with GNU Emacs; see the file COPYING. If not, write to the
25 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
26 ;; Boston, MA 02110-1301, USA.
30 ;; Internal support for MH-E package.
31 ;; Support for generating an mhn composition file.
32 ;; MIME is supported only by MH 6.8 or later.
38 (eval-when-compile (require 'mh-acros
))
44 (autoload 'gnus-article-goto-header
"gnus-art")
45 (autoload 'article-emphasize
"gnus-art")
46 (autoload 'gnus-get-buffer-create
"gnus")
47 (autoload 'gnus-eval-format
"gnus-spec")
48 (autoload 'widget-convert-button
"wid-edit")
49 (autoload 'message-options-set-recipient
"message")
50 (autoload 'mml-unsecure-message
"mml-sec")
51 (autoload 'mml-minibuffer-read-file
"mml")
52 (autoload 'mml-minibuffer-read-description
"mml")
53 (autoload 'mml-insert-empty-tag
"mml")
54 (autoload 'mml-to-mime
"mml")
55 (autoload 'mml-attach-file
"mml")
56 (autoload 'rfc2047-decode-region
"rfc2047")
59 (defun mh-compose-insertion (&optional inline
)
60 "Add a directive to insert a MIME part from a file, using mhn or gnus.
61 If the variable `mh-compose-insertion' is set to 'mhn, then that will be used.
62 If it is set to 'gnus, then that will be used instead.
63 Optional argument INLINE means make it an inline attachment."
65 (if (equal mh-compose-insertion
'gnus
)
67 (mh-mml-attach-file "inline")
69 (call-interactively 'mh-mhn-compose-insertion
)))
72 (defun mh-compose-forward (&optional description folder message
)
73 "Add a MIME directive to forward a message, using mhn or gnus.
74 If the variable `mh-compose-insertion' is set to 'mhn, then that will be used.
75 If it is set to 'gnus, then that will be used instead.
76 Optional argument DESCRIPTION is a description of the attachment.
77 Optional argument FOLDER is the folder from which the forwarded message should
79 Optional argument MESSAGE is the message to forward.
80 If any of the optional arguments are absent, they are prompted for."
82 (read-string "Forw Content-description: ")
83 (mh-prompt-for-folder "Message from" mh-sent-from-folder nil
)
84 (read-string (format "Messages%s: "
85 (if (numberp mh-sent-from-msg
)
86 (format " [%d]" mh-sent-from-msg
)
88 (if (equal mh-compose-insertion
'gnus
)
89 (mh-mml-forward-message description folder message
)
90 (mh-mhn-compose-forw description folder message
)))
93 ;; paragraph code should not fill # lines if MIME enabled.
94 ;; implement mh-auto-edit-mhn (if non-nil, \\[mh-send-letter]
95 ;; invokes mh-edit-mhn automatically before sending.)
96 ;; actually, instead of mh-auto-edit-mhn,
97 ;; should read automhnproc from profile
98 ;; MIME option to mh-forward
99 ;; command to move to content-description insertion point
101 (defvar mh-mhn-args nil
102 "Extra arguments to have \\[mh-edit-mhn] pass to the \"mhn\" command.
103 The arguments are passed to mhn if \\[mh-edit-mhn] is given a
104 prefix argument. Normally default arguments to mhn are specified in the
107 (defvar mh-media-type-regexp
108 (concat (regexp-opt '("text" "image" "audio" "video" "application"
109 "multipart" "message") t
)
111 "Regexp matching valid media types used in MIME attachment compositions.")
113 ;; Just defvar the variable to avoid compiler warning... This doesn't bind
114 ;; the variable, so things should work exactly as before.
115 (defvar mh-have-file-command
)
118 (defun mh-have-file-command ()
119 "Return t if 'file' command is on the system.
120 'file -i' is used to get MIME type of composition insertion."
121 (when (not (boundp 'mh-have-file-command
))
122 (load "executable" t t
) ; executable-find not autoloaded in emacs20
123 (setq mh-have-file-command
124 (and (fboundp 'executable-find
)
125 (executable-find "file") ; file command exists
126 ; and accepts -i and -b args.
127 (zerop (call-process "file" nil nil nil
"-i" "-b"
128 (expand-file-name "inc" mh-progs
))))))
129 mh-have-file-command
)
131 (defvar mh-file-mime-type-substitutions
132 '(("application/msword" "\.xls" "application/ms-excel")
133 ("application/msword" "\.ppt" "application/ms-powerpoint")
134 ("text/plain" "\.vcf" "text/x-vcard"))
135 "Substitutions to make for Content-Type returned from file command.
136 The first element is the Content-Type returned by the file command.
137 The second element is a regexp matching the file name, usually the extension.
138 The third element is the Content-Type to replace with.")
140 (defun mh-file-mime-type-substitute (content-type filename
)
141 "Return possibly changed CONTENT-TYPE on the FILENAME.
142 Substitutions are made from the `mh-file-mime-type-substitutions' variable."
143 (let ((subst mh-file-mime-type-substitutions
)
144 (type) (match) (answer content-type
)
145 (case-fold-search t
))
147 (setq type
(car (car subst
))
148 match
(elt (car subst
) 1))
149 (if (and (string-equal content-type type
)
150 (string-match match filename
))
151 (setq answer
(elt (car subst
) 2)
153 (setq subst
(cdr subst
))))
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."
161 ((not (mh-have-file-command))
162 nil
) ;No file command, exit now.
163 ((not (and (file-exists-p filename
)(file-readable-p filename
)))
167 (let ((tmp-buffer (get-buffer-create mh-temp-buffer
)))
168 (set-buffer tmp-buffer
)
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
))
176 (mh-file-mime-type-substitute (match-string 0) filename
)))
177 (kill-buffer tmp-buffer
)))))))
179 ;;; This is needed for Emacs20 which doesn't have mailcap-mime-types.
180 (defvar mh-mime-content-types
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")
190 ("audio/basic") ("audio/mpeg")
192 ("image/gif") ("image/jpeg") ("image/png")
194 ("message/delivery-status")
195 ("message/external-body") ("message/partial") ("message/rfc822")
197 ("text/enriched") ("text/html") ("text/plain") ("text/rfc822-headers")
198 ("text/richtext") ("text/x-vcard") ("text/xml")
200 ("video/mpeg") ("video/quicktime"))
201 "Valid MIME content types.
202 See documentation for \\[mh-edit-mhn].")
204 ;; RFC 2045 - Multipurpose Internet Mail Extensions (MIME) Part One:
205 ;; Format of Internet Message Bodies.
206 ;; RFC 2046 - Multipurpose Internet Mail Extensions (MIME) Part Two:
208 ;; RFC 2049 - Multipurpose Internet Mail Extensions (MIME) Part Five:
209 ;; Conformance Criteria and Examples.
210 ;; RFC 2017 - Definition of the URL MIME External-Body Access-Type
211 ;; RFC 1738 - Uniform Resource Locators (URL)
212 (defvar mh-access-types
213 '(("anon-ftp") ; RFC2046 Anonymous File Transfer Protocol
214 ("file") ; RFC1738 Host-specific file names
215 ("ftp") ; RFC2046 File Transfer Protocol
216 ("gopher") ; RFC1738 The Gopher Protocol
217 ("http") ; RFC1738 Hypertext Transfer Protocol
218 ("local-file") ; RFC2046 Local file access
219 ("mail-server") ; RFC2046 mail-server Electronic mail address
220 ("mailto") ; RFC1738 Electronic mail address
221 ("news") ; RFC1738 Usenet news
222 ("nntp") ; RFC1738 Usenet news using NNTP access
223 ("propspero") ; RFC1738 Prospero Directory Service
224 ("telnet") ; RFC1738 Telnet
225 ("tftp") ; RFC2046 Trivial File Transfer Protocol
226 ("url") ; RFC2017 URL scheme MIME access-type Protocol
227 ("wais")) ; RFC1738 Wide Area Information Servers
228 "Valid MIME access-type values.")
231 (defun mh-mhn-compose-insertion (filename type description attributes
)
232 "Add a directive to insert a MIME message part from a file.
233 This is the typical way to insert non-text parts in a message.
235 Arguments are FILENAME, which tells where to find the file, TYPE, the MIME
236 content type, DESCRIPTION, a line of text for the Content-Description field.
237 ATTRIBUTES is a comma separated list of name=value pairs that is appended to
238 the Content-Type field of the attachment.
240 See also \\[mh-edit-mhn]."
241 (interactive (let ((filename (read-file-name "Insert contents of: ")))
244 (or (mh-file-mime-type filename
)
245 (completing-read "Content-Type: "
246 (if (fboundp 'mailcap-mime-types
)
247 (mapcar 'list
(mailcap-mime-types))
248 mh-mime-content-types
)))
249 (read-string "Content-Description: ")
250 (read-string "Content-Attributes: "
252 (file-name-nondirectory filename
)
254 (mh-mhn-compose-type filename type description attributes
))
256 (defun mh-mhn-compose-type (filename type
257 &optional description attributes comment
)
258 "Insert a mhn directive to insert a file.
260 The file specified by FILENAME is encoded as TYPE. An optional DESCRIPTION is
261 used as the Content-Description field, optional set of ATTRIBUTES and an
262 optional COMMENT can also be included."
266 (insert "; " attributes
))
268 (insert " (" comment
")"))
271 (insert description
))
272 (insert "] " (expand-file-name filename
))
277 (defun mh-mhn-compose-anon-ftp (host filename type description
)
278 "Add a directive for a MIME anonymous ftp external body part.
279 This directive tells MH to include a reference to a message/external-body part
280 retrievable by anonymous FTP.
282 Arguments are HOST and FILENAME, which tell where to find the file, TYPE, the
283 MIME content type, and DESCRIPTION, a line of text for the Content-description
286 See also \\[mh-edit-mhn]."
288 (read-string "Remote host: ")
289 (read-string "Remote filename: ")
290 (completing-read "External Content-Type: "
291 (if (fboundp 'mailcap-mime-types
)
292 (mapcar 'list
(mailcap-mime-types))
293 mh-mime-content-types
))
294 (read-string "External Content-Description: ")))
295 (mh-mhn-compose-external-type "anon-ftp" host filename
299 (defun mh-mhn-compose-external-compressed-tar (host filename description
)
300 "Add a directive to include a MIME reference to a compressed tar file.
301 The file should be available via anonymous ftp. This directive tells MH to
302 include a reference to a message/external-body part.
304 Arguments are HOST and FILENAME, which tell where to find the file, and
305 DESCRIPTION, a line of text for the Content-description header.
307 See also \\[mh-edit-mhn]."
309 (read-string "Remote host: ")
310 (read-string "Remote filename: ")
311 (read-string "Tar file Content-description: ")))
312 (mh-mhn-compose-external-type "anon-ftp" host filename
313 "application/octet-stream"
315 "type=tar; conversions=x-compress"
319 (defun mh-mhn-compose-external-type (access-type host filename type
320 &optional description
321 attributes extra-params
323 "Add a directive to include a MIME reference to a remote file.
324 The file should be available via anonymous ftp. This directive tells MH to
325 include a reference to a message/external-body part.
327 Arguments are ACCESS-TYPE, HOST and FILENAME, which tell where to find the
328 file and TYPE which is the MIME Content-Type. Optional arguments include
329 DESCRIPTION, a line of text for the Content-description header, ATTRIBUTES,
330 EXTRA-PARAMS, and COMMENT.
332 See also \\[mh-edit-mhn]."
334 (completing-read "Access Type: " mh-access-types
)
335 (read-string "Remote host: ")
336 (read-string "Remote url-path: ")
337 (completing-read "Content-Type: "
338 (if (fboundp 'mailcap-mime-types
)
339 (mapcar 'list
(mailcap-mime-types))
340 mh-mime-content-types
))
341 (if current-prefix-arg
(read-string "Content-description: "))
342 (if current-prefix-arg
(read-string "Attributes: "))
343 (if current-prefix-arg
(read-string "Extra Parameters: "))
344 (if current-prefix-arg
(read-string "Comment: "))))
348 (insert "; " attributes
))
350 (insert " (" comment
") "))
353 (insert description
))
355 (insert "access-type=" access-type
"; ")
356 (insert "site=" host
)
357 (insert "; name=" (file-name-nondirectory filename
))
358 (let ((directory (file-name-directory filename
)))
360 (insert "; directory=\"" directory
"\"")))
362 (insert "; " extra-params
))
366 (defun mh-mhn-compose-forw (&optional description folder messages
)
367 "Add a forw directive to this message, to forward a message with MIME.
368 This directive tells MH to include the named messages in this one.
370 Arguments are DESCRIPTION, a line of text for the Content-description header,
371 and FOLDER and MESSAGES, which name the message(s) to be forwarded.
373 See also \\[mh-edit-mhn]."
375 (read-string "Forw Content-description: ")
376 (mh-prompt-for-folder "Message from" mh-sent-from-folder nil
)
377 (read-string (format "Messages%s: "
378 (if (numberp mh-sent-from-msg
)
379 (format " [%d]" mh-sent-from-msg
)
384 (not (string= description
""))
385 (insert description
))
388 (not (string= folder
""))
391 (not (string= messages
"")))
392 (let ((start (point)))
393 (insert " " messages
)
394 (subst-char-in-region start
(point) ?
, ?
))
395 (if (numberp mh-sent-from-msg
)
396 (insert " " (int-to-string mh-sent-from-msg
))))
400 (defun mh-edit-mhn (&optional extra-args
)
401 "Format the current draft for MIME, expanding any mhn directives.
403 Process the current draft with the mhn program, which, using directives
404 already inserted in the draft, fills in all the MIME components and header
407 This step is performed automatically when sending the message, but this
408 function may be called manually before sending the draft as well.
410 The `\\[mh-revert-mhn-edit]' command undoes this command. The arguments in the
411 list `mh-mhn-args' are passed to mhn if this function is passed an optional
412 prefix argument EXTRA-ARGS.
414 For assistance with creating mhn directives to insert various types of
415 components in a message, see \\[mh-mhn-compose-insertion] (generic insertion
416 from a file), \\[mh-mhn-compose-anon-ftp] (external reference to file via
417 anonymous ftp), \\[mh-mhn-compose-external-compressed-tar] \ \(reference to
418 compressed tar file via anonymous ftp), and \\[mh-mhn-compose-forw] (forward
421 The value of `mh-edit-mhn-hook' is a list of functions to be called, with no
422 arguments, after performing the conversion.
424 The mhn program is part of MH version 6.8 or later."
426 (mh-mhn-quote-unescaped-sharp)
428 (message "mhn editing...")
431 (mh-exec-cmd-error nil
432 "mhbuild" (if extra-args mh-mhn-args
) buffer-file-name
))
434 (mh-exec-cmd-error (format "mhdraft=%s" buffer-file-name
)
435 "mhn" (if extra-args mh-mhn-args
) buffer-file-name
)))
437 (message "mhn editing...done")
438 (run-hooks 'mh-edit-mhn-hook
))
440 (defun mh-mhn-quote-unescaped-sharp ()
441 "Quote `#' characters that haven't been quoted for `mhbuild'.
442 If the `#' character is present in the first column, but it isn't part of a
443 MHN directive then `mhbuild' gives an error. This function will quote all such
446 (goto-char (point-min))
447 (while (re-search-forward "^#" nil t
)
449 (unless (mh-mhn-directive-present-p (point) (line-end-position))
451 (goto-char (line-end-position)))))
454 (defun mh-revert-mhn-edit (noconfirm)
455 "Undo the effect of \\[mh-edit-mhn] by reverting to the backup file.
456 Optional non-nil argument NOCONFIRM means don't ask for confirmation."
458 (if (null buffer-file-name
)
459 (error "Buffer does not seem to be associated with any file"))
460 (let ((backup-strings '("," "#"))
462 (while (and backup-strings
465 (concat (file-name-directory buffer-file-name
)
467 (file-name-nondirectory buffer-file-name
)
469 (setq backup-strings
(cdr backup-strings
)))
471 (error "Backup file for %s no longer exists!" buffer-file-name
))
473 (yes-or-no-p (format "Revert buffer from file %s? "
475 (error "Revert not confirmed"))
476 (let ((buffer-read-only nil
))
478 (insert-file-contents backup-file
))
479 (after-find-file nil
)))
482 (defun mh-mhn-directive-present-p (&optional begin end
)
483 "Check if the text between BEGIN and END might be a MHN directive.
484 The optional argument BEGIN defaults to the beginning of the buffer, while END
485 defaults to the the end of the buffer."
486 (unless begin
(setq begin
(point-min)))
487 (unless end
(setq end
(point-max)))
489 (block 'search-for-mhn-directive
491 (while (re-search-forward "^#" end t
)
492 (let ((s (buffer-substring-no-properties (point) (line-end-position))))
494 ((string-match "^forw[ \t\n]+" s
)
495 (return-from 'search-for-mhn-directive t
))
496 (t (let ((first-token (car (split-string s
"[ \t;@]"))))
497 (when (and first-token
498 (string-match mh-media-type-regexp
500 (return-from 'search-for-mhn-directive t
)))))))
505 ;;; MIME composition functions
508 (defun mh-mml-to-mime ()
509 "Compose MIME message from mml directives.
510 This step is performed automatically when sending the message, but this
511 function may be called manually before sending the draft as well."
514 (when mh-gnus-pgp-support-flag
;; This is only needed for PGP
515 (message-options-set-recipient))
516 (let ((saved-text (buffer-string))
517 (buffer (current-buffer))
518 (modified-flag (buffer-modified-p)))
519 (condition-case err
(mml-to-mime)
521 (with-current-buffer buffer
522 (delete-region (point-min) (point-max))
524 (set-buffer-modified-p modified-flag
))
525 (error (error-message-string err
))))))
528 (defun mh-mml-forward-message (description folder message
)
529 "Forward a message as attachment.
530 The function will prompt the user for a DESCRIPTION, a FOLDER and MESSAGE
532 (let ((msg (if (and (equal message
"") (numberp mh-sent-from-msg
))
534 (car (read-from-string message
)))))
535 (cond ((integerp msg
)
536 (if (string= "" description
)
537 ;; Rationale: mml-attach-file constructs a malformed composition
538 ;; if the description string is empty. This fixes SF #625168.
539 (mml-attach-file (format "%s%s/%d"
540 mh-user-path
(substring folder
1) msg
)
542 (mml-attach-file (format "%s%s/%d"
543 mh-user-path
(substring folder
1) msg
)
546 (t (error "The message number, %s is not a integer!" msg
)))))
548 (defvar mh-mml-cryptographic-method-history
())
551 (defun mh-mml-query-cryptographic-method ()
552 "Read the cryptographic method to use."
553 (if current-prefix-arg
554 (let ((def (or (car mh-mml-cryptographic-method-history
)
555 mh-mml-method-default
)))
556 (completing-read (format "Method: [%s] " def
)
557 '(("pgp") ("pgpmime") ("smime"))
558 nil t nil
'mh-mml-cryptographic-method-history def
))
559 mh-mml-method-default
))
562 (defun mh-mml-attach-file (&optional disposition
)
563 "Attach a file to the outgoing MIME message.
564 The file is not inserted or encoded until you send the message with
565 `\\[mh-send-letter]'.
566 Message disposition is \"inline\" or \"attachment\" and is prompted for if
569 This is basically `mml-attach-file' from gnus, modified such that a prefix
570 argument yields an `inline' disposition and Content-Type is determined
572 (let* ((file (mml-minibuffer-read-file "Attach file: "))
573 (type (or (mh-file-mime-type file
)
574 (completing-read "Content-Type: "
575 (if (fboundp 'mailcap-mime-types
)
576 (mapcar 'list
(mailcap-mime-types))
577 mh-mime-content-types
))))
578 (description (mml-minibuffer-read-description))
579 (dispos (or disposition
580 (completing-read "Disposition: [attachment] "
581 '(("attachment")("inline"))
584 (mml-insert-empty-tag 'part
'type type
'filename file
585 'disposition dispos
'description description
)))
587 (defvar mh-identity-pgg-default-user-id
)
589 (defun mh-secure-message (method mode
&optional identity
)
590 "Add directive to Encrypt/Sign an entire message.
591 METHOD should be one of: \"pgpmime\", \"pgp\", \"smime\".
592 MODE should be one of: \"sign\", \"encrypt\", \"signencrypt\", \"none\".
593 IDENTITY is optionally the default-user-id to use."
594 (if (not mh-gnus-pgp-support-flag
)
595 (error "Sorry. Your version of gnus does not support PGP/GPG")
596 ;; Check the arguments
597 (let ((valid-methods (list "pgpmime" "pgp" "smime"))
598 (valid-modes (list "sign" "encrypt" "signencrypt" "none")))
599 (if (not (member method valid-methods
))
600 (error "Sorry. METHOD \"%s\" is invalid" method
))
601 (if (not (member mode valid-modes
))
602 (error "Sorry. MODE \"%s\" is invalid" mode
))
603 (mml-unsecure-message)
604 (if (not (string= mode
"none"))
606 (goto-char (point-min))
607 (mh-goto-header-end 1)
608 (if mh-identity-pgg-default-user-id
609 (mml-insert-tag 'secure
'method method
'mode mode
610 'sender mh-identity-pgg-default-user-id
)
611 (mml-insert-tag 'secure
'method method
'mode mode
)))))))
614 (defun mh-mml-unsecure-message (&optional ignore
)
615 "Remove any secure message directives.
616 The IGNORE argument is not used."
618 (if (not mh-gnus-pgp-support-flag
)
619 (error "Sorry. Your version of gnus does not support PGP/GPG")
620 (mml-unsecure-message)))
623 (defun mh-mml-secure-message-sign (method)
624 "Add security directive to sign the entire message using METHOD."
625 (interactive (list (mh-mml-query-cryptographic-method)))
626 (mh-secure-message method
"sign" mh-identity-pgg-default-user-id
))
629 (defun mh-mml-secure-message-encrypt (method)
630 "Add security directive to encrypt the entire message using METHOD."
631 (interactive (list (mh-mml-query-cryptographic-method)))
632 (mh-secure-message method
"encrypt" mh-identity-pgg-default-user-id
))
635 (defun mh-mml-secure-message-signencrypt (method)
636 "Add security directive to encrypt and sign the entire message using METHOD."
637 (interactive (list (mh-mml-query-cryptographic-method)))
638 (mh-secure-message method
"signencrypt" mh-identity-pgg-default-user-id
))
641 (defun mh-mml-directive-present-p ()
642 "Check if the current buffer has text which may be an MML directive."
644 (goto-char (point-min))
646 "\\(<#part\\(.\\|\n\\)*>[ \n\t]*<#/part>\\|^<#secure.+>$\\)"
654 (defun mh-mime-cleanup ()
655 "Free the decoded MIME parts."
656 (let ((mime-data (gethash (current-buffer) mh-globals-hash
)))
657 ;; This is for Emacs, what about XEmacs?
658 (mh-funcall-if-exists remove-images
(point-min) (point-max))
660 (mm-destroy-parts (mh-mime-handles mime-data
))
661 (remhash (current-buffer) mh-globals-hash
))))
664 (defun mh-destroy-postponed-handles ()
665 "Free MIME data for externally displayed mime parts."
666 (let ((mime-data (mh-buffer-data)))
668 (mm-destroy-parts (mh-mime-handles mime-data
)))
669 (remhash (current-buffer) mh-globals-hash
)))
671 (defun mh-handle-set-external-undisplayer (folder handle function
)
672 "Replacement for `mm-handle-set-external-undisplayer'.
673 This is only called in recent versions of Gnus. The MIME handles are stored
674 in data structures corresponding to MH-E folder buffer FOLDER instead of in
675 Gnus (as in the original). The MIME part, HANDLE is associated with the
676 undisplayer FUNCTION."
677 (if (mm-keep-viewer-alive-p handle
)
678 (let ((new-handle (copy-sequence handle
)))
679 (mm-handle-set-undisplayer new-handle function
)
680 (mm-handle-set-undisplayer handle nil
)
683 (push new-handle
(mh-mime-handles (mh-buffer-data)))))
684 (mm-handle-set-undisplayer handle function
)))
688 ;;; MIME transformations
689 (eval-when-compile (require 'font-lock
))
692 (defun mh-add-missing-mime-version-header ()
693 "Some mail programs don't put a MIME-Version header.
694 I have seen this only in spam, so maybe we shouldn't fix this ;-)"
696 (goto-char (point-min))
697 (re-search-forward "\n\n" nil t
)
699 (narrow-to-region (point-min) (point))
700 (when (and (message-fetch-field "content-type")
701 (not (message-fetch-field "mime-version")))
702 (goto-char (point-min))
703 (insert "MIME-Version: 1.0\n")))))
705 (defun mh-small-show-buffer-p ()
706 "Check if show buffer is small.
707 This is used to decide if smileys and graphical emphasis will be displayed."
709 (when (and (boundp 'font-lock-maximum-size
) font-lock-maximum-size
)
710 (cond ((numberp font-lock-maximum-size
)
711 (setq max font-lock-maximum-size
))
712 ((listp font-lock-maximum-size
)
713 (setq max
(cdr (or (assoc 'mh-show-mode font-lock-maximum-size
)
714 (assoc t font-lock-maximum-size
)))))))
715 (or (not (numberp max
)) (>= (/ max
8) (buffer-size)))))
718 (defun mh-display-smileys ()
719 "Function to display smileys."
720 (when (and mh-graphical-smileys-flag
(mh-small-show-buffer-p))
721 (mh-funcall-if-exists smiley-region
(point-min) (point-max))))
724 (defun mh-display-emphasis ()
725 "Function to display graphical emphasis."
726 (when (and mh-graphical-emphasis-flag
(mh-small-show-buffer-p))
727 (flet ((article-goto-body ())) ; shadow this function to do nothing
729 (goto-char (point-min))
730 (article-emphasize)))))
732 ;; Copied from gnus-art.el (should be checked for other cool things that can
733 ;; be added to the buttons)
734 (defvar mh-mime-button-commands
735 '((mh-press-button "\r" "Toggle Display")))
736 (defvar mh-mime-button-map
737 (let ((map (make-sparse-keymap)))
738 (unless (>= (string-to-number emacs-version
) 21)
739 ;; XEmacs doesn't care.
740 (set-keymap-parent map mh-show-mode-map
))
742 (define-key map
[mouse-2
] 'mh-push-button
))
744 (define-key map
'(button2) 'mh-push-button
))
745 (dolist (c mh-mime-button-commands
)
746 (define-key map
(cadr c
) (car c
)))
748 (defvar mh-mime-button-line-format-alist
753 (defvar mh-mime-button-line-format
"%{%([%p. %d%T]%)%}%e\n")
754 (defvar mh-mime-security-button-pressed nil
)
755 (defvar mh-mime-security-button-line-format
"%{%([[%t:%i]%D]%)%}\n")
756 (defvar mh-mime-security-button-end-line-format
"%{%([[End of %t]%D]%)%}\n")
757 (defvar mh-mime-security-button-line-format-alist
761 (?D pressed-details ?s
)))
762 (defvar mh-mime-security-button-map
763 (let ((map (make-sparse-keymap)))
764 (unless (>= (string-to-number emacs-version
) 21)
765 (set-keymap-parent map mh-show-mode-map
))
766 (define-key map
"\r" 'mh-press-button
)
768 (define-key map
[mouse-2
] 'mh-push-button
))
770 (define-key map
'(button2) 'mh-push-button
))
773 (defvar mh-mime-save-parts-directory nil
774 "Default to use for `mh-mime-save-parts-default-directory'.
778 (defun mh-mime-save-parts (arg)
779 "Store the MIME parts of the current message.
780 If ARG, prompt for directory, else use that specified by the variable
781 `mh-mime-save-parts-default-directory'. These directories may be superseded by
782 mh_profile directives, since this function calls on mhstore or mhn to do the
785 (let ((msg (if (eq major-mode
'mh-show-mode
)
786 (mh-show-buffer-message-number)
788 (folder (if (eq major-mode
'mh-show-mode
)
789 mh-show-folder-buffer
791 (command (if (mh-variant-p 'nmh
) "mhstore" "mhn"))
795 (equal nil mh-mime-save-parts-default-directory
)
796 (equal t mh-mime-save-parts-default-directory
))
797 (not mh-mime-save-parts-directory
))
798 (read-file-name "Store in directory: " nil nil t nil
))
800 (equal t mh-mime-save-parts-default-directory
))
801 mh-mime-save-parts-directory
)
802 (read-file-name (format
803 "Store in directory: [%s] "
804 mh-mime-save-parts-directory
)
805 "" mh-mime-save-parts-directory t
""))
806 ((stringp mh-mime-save-parts-default-directory
)
807 mh-mime-save-parts-default-directory
)
809 mh-mime-save-parts-directory
))))
810 (if (and (equal directory
"") mh-mime-save-parts-directory
)
811 (setq directory mh-mime-save-parts-directory
))
812 (if (not (file-directory-p directory
))
813 (message "No directory specified")
814 (if (equal nil mh-mime-save-parts-default-directory
)
815 (setq mh-mime-save-parts-directory directory
))
817 (set-buffer (get-buffer-create mh-log-buffer
))
819 (setq mh-mime-save-parts-directory directory
)
820 (let ((initial-size (mh-truncate-log-buffer)))
822 (expand-file-name command mh-progs
) nil t nil
823 (mh-list-to-string (list folder msg
"-auto")))
824 (if (> (buffer-size) initial-size
)
825 (save-window-excursion
826 (switch-to-buffer-other-window mh-log-buffer
)
829 ;; Avoid errors if gnus-sum isn't loaded yet...
830 (defvar gnus-newsgroup-charset nil
)
831 (defvar gnus-newsgroup-name nil
)
833 (defun mh-decode-message-body ()
834 "Decode message based on charset.
835 If message has been encoded for transfer take that into account."
836 (let (ct charset cte
)
837 (goto-char (point-min))
838 (re-search-forward "\n\n" nil t
)
840 (narrow-to-region (point-min) (point))
841 (setq ct
(ignore-errors (mail-header-parse-content-type
842 (message-fetch-field "Content-Type" t
)))
843 charset
(mail-content-type-get ct
'charset
)
844 cte
(message-fetch-field "Content-Transfer-Encoding")))
845 (when (stringp cte
) (setq cte
(mail-header-strip cte
)))
846 (when (or (not ct
) (equal (car ct
) "text/plain"))
848 (narrow-to-region (min (1+ (mh-mail-header-end)) (point-max))
850 (mm-decode-body charset
851 (and cte
(intern (downcase
852 (gnus-strip-whitespace cte
))))
856 (defun mh-toggle-mh-decode-mime-flag ()
857 "Toggle whether MH-E should decode MIME or not."
859 (setq mh-decode-mime-flag
(not mh-decode-mime-flag
))
861 (message (format "(setq mh-decode-mime-flag %s)" mh-decode-mime-flag
)))
864 (defun mh-decode-message-header ()
865 "Decode RFC2047 encoded message header fields."
866 (when mh-decode-mime-flag
867 (let ((buffer-read-only nil
))
868 (rfc2047-decode-region (point-min) (mh-mail-header-end)))))
871 (defun mh-mime-display (&optional pre-dissected-handles
)
872 "Display (and possibly decode) MIME handles.
873 Optional argument, PRE-DISSECTED-HANDLES is a list of MIME handles. If
874 present they are displayed otherwise the buffer is parsed and then
877 (folder mh-show-folder-buffer
)
878 (raw-message-data (buffer-string)))
879 (flet ((mm-handle-set-external-undisplayer
881 (mh-handle-set-external-undisplayer folder handle function
)))
882 (goto-char (point-min))
883 (unless (search-forward "\n\n" nil t
)
884 (goto-char (point-max))
889 ;; If needed dissect the current buffer
890 (if pre-dissected-handles
891 (setq handles pre-dissected-handles
)
892 (setq handles
(or (mm-dissect-buffer nil
) (mm-uu-dissect)))
893 (setf (mh-mime-handles (mh-buffer-data))
894 (mm-merge-handles handles
895 (mh-mime-handles (mh-buffer-data))))
896 (unless handles
(mh-decode-message-body)))
899 (or (not (stringp (car handles
))) (cdr handles
)))
900 ;; Goto start of message body
901 (goto-char (point-min))
902 (or (search-forward "\n\n" nil t
) (goto-char (point-max)))
905 (delete-region (point) (point-max))
907 ;; Display the MIME handles
908 (mh-mime-display-part handles
))
909 (t (mh-signature-highlight))))
911 (message "Please report this error. The error message is:\n %s"
912 (error-message-string err
))
913 (delete-region (point-min) (point-max))
914 (insert raw-message-data
))))))
916 (defun mh-mime-display-part (handle)
917 "Decides the viewer to call based on the type of HANDLE."
918 (cond ((null handle
) nil
)
919 ((not (stringp (car handle
)))
920 (mh-mime-display-single handle
))
921 ((equal (car handle
) "multipart/alternative")
922 (mh-mime-display-alternative (cdr handle
)))
923 ((and mh-gnus-pgp-support-flag
924 (or (equal (car handle
) "multipart/signed")
925 (equal (car handle
) "multipart/encrypted")))
926 (mh-mime-display-security handle
))
927 (t (mh-mime-display-mixed (cdr handle
)))))
929 (defun mh-mime-display-alternative (handles)
930 "Choose among the alternatives, HANDLES the part that will be displayed.
931 If no part is preferred then all the parts are displayed."
932 (let* ((preferred (mm-preferred-alternative handles
))
933 (others (loop for x in handles unless
(eq x preferred
) collect x
)))
934 (cond ((and preferred
(stringp (car preferred
)))
935 (mh-mime-display-part preferred
)
936 (mh-mime-maybe-display-alternatives others
))
939 (narrow-to-region (point) (if (eobp) (point) (1+ (point))))
940 (mh-mime-display-single preferred
)
941 (mh-mime-maybe-display-alternatives others
)
942 (goto-char (point-max))))
943 (t (mh-mime-display-mixed handles
)))))
945 (defun mh-mime-maybe-display-alternatives (alternatives)
946 "Show buttons for ALTERNATIVES.
947 If `mh-mime-display-alternatives-flag' is non-nil then display buttons for
948 alternative parts that are usually suppressed."
949 (when (and mh-display-buttons-for-alternatives-flag alternatives
)
950 (insert "\n----------------------------------------------------\n")
951 (insert "Alternatives:\n")
952 (dolist (x alternatives
)
954 (mh-insert-mime-button x
(mh-mime-part-index x
) nil
))
955 (insert "\n----------------------------------------------------\n")))
957 (defun mh-mime-display-mixed (handles)
958 "Display the list of MIME parts, HANDLES recursively."
959 (mapcar #'mh-mime-display-part handles
))
961 (defun mh-mime-part-index (handle)
962 "Generate the button number for MIME part, HANDLE.
963 Notice that a hash table is used to display the same number when buttons need
964 to be displayed multiple times (for instance when nested messages are
966 (or (gethash handle
(mh-mime-part-index-hash (mh-buffer-data)))
967 (setf (gethash handle
(mh-mime-part-index-hash (mh-buffer-data)))
968 (incf (mh-mime-parts-count (mh-buffer-data))))))
970 (defun mh-small-image-p (handle)
971 "Decide whether HANDLE is a \"small\" image that can be displayed inline.
972 This is only useful if a Content-Disposition header is not present."
973 (let ((media-test (caddr (assoc (car (mm-handle-type handle
))
974 mh-mm-inline-media-tests
)))
975 (mm-inline-large-images t
))
977 (equal (mm-handle-media-supertype handle
) "image")
978 (funcall media-test handle
) ; Since mm-inline-large-images is T,
979 ; this only tells us if the image is
980 ; something that emacs can display
981 (let* ((image (mm-get-image handle
)))
983 (and (mh-funcall-if-exists glyphp image
)
984 (< (glyph-width image
)
985 (or mh-max-inline-image-width
(window-pixel-width)))
986 (< (glyph-height image
)
987 (or mh-max-inline-image-height
988 (window-pixel-height)))))
990 (let ((size (mh-funcall-if-exists image-size image
)))
992 (< (cdr size
) (or mh-max-inline-image-height
993 (1- (window-height))))
994 (< (car size
) (or mh-max-inline-image-width
995 (window-width)))))))))))
997 (defun mh-inline-vcard-p (handle)
998 "Decide if HANDLE is a vcard that must be displayed inline."
999 (let ((type (mm-handle-type handle
)))
1000 (and (or (featurep 'vcard
) (fboundp 'vcard-pretty-print
))
1002 (equal (car type
) "text/x-vcard")
1006 (goto-char (point-min))
1007 (not (mh-signature-separator-p)))))))
1009 (defun mh-mime-display-single (handle)
1010 "Display a leaf node, HANDLE in the MIME tree."
1011 (let* ((type (mm-handle-media-type handle
))
1012 (small-image-flag (mh-small-image-p handle
))
1013 (attachmentp (equal (car (mm-handle-disposition handle
))
1015 (inlinep (and (equal (car (mm-handle-disposition handle
)) "inline")
1016 (mm-inlinable-p handle
)
1017 (mm-inlined-p handle
)))
1018 (displayp (or inlinep
; show if inline OR
1019 (mh-inline-vcard-p handle
); inline vcard OR
1020 (and (not attachmentp
) ; if not an attachment
1021 (or small-image-flag
; and small image
1022 ; and user wants inline
1024 (mm-handle-media-supertype handle
)
1026 (mm-inlinable-p handle
)
1027 (mm-inlined-p handle
)))))))
1029 (narrow-to-region (point) (if (eobp) (point) (1+ (point))))
1030 (cond ((and mh-gnus-pgp-support-flag
1031 (equal type
"application/pgp-signature"))
1032 nil
) ; skip signatures as they are already handled...
1035 (mh-insert-mime-button handle
(mh-mime-part-index handle
) nil
))
1036 ((and displayp
(not mh-display-buttons-for-inline-parts-flag
))
1037 (or (mm-display-part handle
) (mm-display-part handle
))
1038 (mh-signature-highlight handle
))
1039 ((and displayp mh-display-buttons-for-inline-parts-flag
)
1041 (mh-insert-mime-button handle
(mh-mime-part-index handle
) nil
)
1043 (mh-mm-display-part handle
)))
1044 (goto-char (point-max)))))
1046 (defun mh-signature-highlight (&optional handle
)
1047 "Highlight message signature in HANDLE.
1048 The optional argument, HANDLE is a MIME handle if the function is being used
1049 to highlight the signature in a MIME part."
1051 (cond ((not handle
) "^-- $")
1052 ((not (and (equal (mm-handle-media-supertype handle
) "text")
1053 (equal (mm-handle-media-subtype handle
) "html")))
1055 ((eq (mh-mm-text-html-renderer) 'lynx
) "^ --$")
1058 (goto-char (point-max))
1059 (when (re-search-backward regexp nil t
)
1061 (let ((ov (make-overlay (point) (point-max))))
1062 (overlay-put ov
'face
'mh-show-signature
)
1063 (overlay-put ov
'evaporate t
)))
1065 (set-extent-property (make-extent (point) (point-max))
1066 'face
'mh-show-signature
))))))
1072 (defun mh-insert-mime-button (handle index displayed
)
1073 "Insert MIME button for HANDLE.
1074 INDEX is the part number that will be DISPLAYED. It is also used by commands
1075 like \"K v\" which operate on individual MIME parts."
1076 ;; The button could be displayed by a previous decode. In that case
1077 ;; undisplay it if we need a hidden button.
1078 (when (and (mm-handle-displayed-p handle
) (not displayed
))
1079 (mm-display-part handle
))
1080 (let ((name (or (mail-content-type-get (mm-handle-type handle
) 'name
)
1081 (mail-content-type-get (mm-handle-disposition handle
)
1083 (mail-content-type-get (mm-handle-type handle
) 'url
)
1085 (type (mm-handle-media-type handle
))
1086 (description (mail-decode-encoded-word-string
1087 (or (mm-handle-description handle
) "")))
1088 (dots (if (or displayed
(mm-handle-displayed-p handle
)) " " "..."))
1089 long-type begin end
)
1090 (if (string-match ".*/" name
) (setq name
(substring name
(match-end 0))))
1091 (setq long-type
(concat type
(and (not (equal name
""))
1092 (concat "; " name
))))
1093 (unless (equal description
"")
1094 (setq long-type
(concat " --- " long-type
)))
1095 (unless (bolp) (insert "\n"))
1096 (setq begin
(point))
1098 mh-mime-button-line-format mh-mime-button-line-format-alist
1099 `(,@(gnus-local-map-property mh-mime-button-map
)
1100 mh-callback mh-mm-display-part
1104 (widget-convert-button
1107 :action
'mh-widget-press-button
1108 :button-keymap mh-mime-button-map
1110 "Mouse-2 click or press RET (in show buffer) to toggle display")
1111 (dolist (ov (mh-funcall-if-exists overlays-in begin end
))
1112 (mh-funcall-if-exists overlay-put ov
'evaporate t
))))
1114 ;; There is a bug in Gnus inline image display due to which an extra line
1115 ;; gets inserted every time it is viewed. To work around that problem we are
1116 ;; using an extra property 'mh-region to remember the region that is added
1117 ;; when the button is clicked. The region is then deleted to make sure that
1118 ;; no extra lines get inserted.
1119 (defun mh-mm-display-part (handle)
1120 "Toggle display of button for MIME part, HANDLE."
1122 (let ((id (get-text-property (point) 'mh-part
))
1124 (window (selected-window))
1125 (mail-parse-charset 'nil
)
1126 (mail-parse-ignored-charsets nil
)
1127 region buffer-read-only
)
1130 (let ((win (get-buffer-window (current-buffer) t
)))
1132 (select-window win
))
1135 (if (mm-handle-displayed-p handle
)
1136 ;; This will remove the part.
1138 ;; Delete the button and displayed part (if any)
1139 (let ((region (get-text-property point
'mh-region
)))
1141 (mh-funcall-if-exists
1142 remove-images
(car region
) (cdr region
)))
1143 (mm-display-part handle
)
1145 (delete-region (car region
) (cdr region
))))
1146 ;; Delete button (if it still remains). This happens for
1147 ;; externally displayed parts where the previous step does
1150 (delete-region (point) (progn (forward-line) (point)))))
1152 (delete-region (point) (progn (forward-line 1) (point)))
1153 (narrow-to-region (point) (point))
1154 ;; Maybe we need another unwind-protect here.
1155 (when (equal (mm-handle-media-supertype handle
) "image")
1157 (when (and (not (eq (ignore-errors (mm-display-part handle
))
1159 (equal (mm-handle-media-supertype handle
)
1161 (goto-char (point-min))
1163 (when (equal (mm-handle-media-supertype handle
) "text")
1164 (when (eq mh-highlight-citation-p
'gnus
)
1165 (mh-gnus-article-highlight-citation))
1166 (mh-display-smileys)
1167 (mh-display-emphasis)
1168 (mh-signature-highlight handle
))
1169 (setq region
(cons (progn (goto-char (point-min))
1171 (progn (goto-char (point-max))
1172 (point-marker)))))))
1173 (when (window-live-p window
)
1174 (select-window window
))
1177 (mh-insert-mime-button handle id
(mm-handle-displayed-p handle
))
1180 (add-text-properties (line-beginning-position) (line-end-position)
1181 `(mh-region ,region
)))))))
1184 (defun mh-press-button ()
1186 If the MIME part is visible then it is removed. Otherwise the part is
1189 (let ((mm-inline-media-tests mh-mm-inline-media-tests
)
1190 (data (get-text-property (point) 'mh-data
))
1191 (function (get-text-property (point) 'mh-callback
))
1192 (buffer-read-only nil
)
1193 (folder mh-show-folder-buffer
))
1194 (flet ((mm-handle-set-external-undisplayer
1196 (mh-handle-set-external-undisplayer folder handle function
)))
1197 (when (and function
(eolp))
1199 (unwind-protect (and function
(funcall function data
))
1200 (set-buffer-modified-p nil
)))))
1203 (defun mh-push-button (event)
1204 "Click MIME button for EVENT.
1205 If the MIME part is visible then it is removed. Otherwise the part is
1206 displayed. This function is called when the mouse is used to click the MIME
1209 (mh-do-at-event-location event
1210 (let ((folder mh-show-folder-buffer
)
1211 (mm-inline-media-tests mh-mm-inline-media-tests
)
1212 (data (get-text-property (point) 'mh-data
))
1213 (function (get-text-property (point) 'mh-callback
)))
1214 (flet ((mm-handle-set-external-undisplayer (handle func
)
1215 (mh-handle-set-external-undisplayer folder handle func
)))
1216 (and function
(funcall function data
))))))
1219 (defun mh-mime-save-part ()
1220 "Save MIME part at point."
1222 (let ((data (get-text-property (point) 'mh-data
)))
1224 (let ((mm-default-directory
1225 (file-name-as-directory (or mh-mime-save-parts-directory
1226 default-directory
))))
1227 (mh-mm-save-part data
)
1228 (setq mh-mime-save-parts-directory mm-default-directory
)))))
1231 (defun mh-mime-inline-part ()
1232 "Toggle display of the raw MIME part."
1234 (let* ((buffer-read-only nil
)
1235 (data (get-text-property (point) 'mh-data
))
1236 (inserted-flag (get-text-property (point) 'mh-mime-inserted
))
1237 (displayed-flag (mm-handle-displayed-p data
))
1240 (cond ((and data
(not inserted-flag
) (not displayed-flag
))
1241 (let ((contents (mm-get-part data
)))
1242 (add-text-properties (line-beginning-position) (line-end-position)
1243 '(mh-mime-inserted t
))
1244 (setq start
(point-marker))
1246 (mm-insert-inline data contents
)
1247 (setq end
(point-marker))
1248 (add-text-properties
1249 start
(progn (goto-char start
) (line-end-position))
1250 `(mh-region (,start .
,end
)))))
1251 ((and data
(or inserted-flag displayed-flag
))
1253 (message "MIME part already inserted")))
1255 (set-buffer-modified-p nil
)))
1258 (defun mh-display-with-external-viewer (part-index)
1259 "View MIME PART-INDEX externally."
1261 (when (consp part-index
) (setq part-index
(car part-index
)))
1262 (mh-folder-mime-action
1265 (let* ((part (get-text-property (point) 'mh-data
))
1266 (type (mm-handle-media-type part
))
1267 (methods (mapcar (lambda (x) (list (cdr (assoc 'viewer x
))))
1268 (mailcap-mime-info type
'all
)))
1269 (def (caar methods
))
1270 (prompt (format "Viewer: %s" (if def
(format "[%s] " def
) "")))
1271 (method (completing-read prompt methods nil nil nil nil def
))
1272 (folder mh-show-folder-buffer
)
1273 (buffer-read-only nil
))
1274 (when (string-match "^[^% \t]+$" method
)
1275 (setq method
(concat method
" %s")))
1276 (flet ((mm-handle-set-external-undisplayer (handle function
)
1277 (mh-handle-set-external-undisplayer folder handle function
)))
1278 (unwind-protect (mm-display-external part method
)
1279 (set-buffer-modified-p nil
)))))
1282 (defun mh-widget-press-button (widget el
)
1283 "Callback for widget, WIDGET.
1284 Parameter EL is unused."
1285 (goto-char (widget-get widget
:from
))
1288 (defun mh-mime-display-security (handle)
1289 "Display PGP encrypted/signed message, HANDLE."
1291 (narrow-to-region (point) (point))
1293 (mh-insert-mime-security-button handle
)
1294 (mh-mime-display-mixed (cdr handle
))
1296 (let ((mh-mime-security-button-line-format
1297 mh-mime-security-button-end-line-format
))
1298 (mh-insert-mime-security-button handle
))
1299 (mm-set-handle-multipart-parameter
1300 handle
'mh-region
(cons (point-min-marker) (point-max-marker)))))
1302 ;;; I rewrote the security part because Gnus doesn't seem to ever minimize
1303 ;;; the button. That is once the mime-security button is pressed there seems
1304 ;;; to be no way of getting rid of the inserted text.
1305 (defun mh-mime-security-show-details (handle)
1306 "Toggle display of detailed security info for HANDLE."
1307 (let ((details (mm-handle-multipart-ctl-parameter handle
'gnus-details
)))
1309 (let ((mh-mime-security-button-pressed
1310 (not (get-text-property (point) 'mh-button-pressed
)))
1311 (mh-mime-security-button-line-format
1312 (get-text-property (point) 'mh-line-format
)))
1314 (while (eq (get-text-property (point) 'mh-line-format
)
1315 mh-mime-security-button-line-format
)
1319 (narrow-to-region (point) (point))
1320 (mh-insert-mime-security-button handle
))
1323 (or (text-property-not-all
1325 'mh-line-format mh-mime-security-button-line-format
)
1327 (forward-line -
1)))))
1329 (defun mh-mime-security-button-face (info)
1330 "Return the button face to use for encrypted/signed mail based on INFO."
1331 (cond ((string-match "OK" info
) ;Decrypted mail
1332 mh-show-pgg-good-face
)
1333 ((string-match "Failed" info
) ;Decryption failed or signature invalid
1334 mh-show-pgg-bad-face
)
1335 ((string-match "Undecided" info
);Unprocessed mail
1336 mh-show-pgg-unknown-face
)
1337 ((string-match "Untrusted" info
);Key not trusted
1338 mh-show-pgg-unknown-face
)
1339 (t mh-show-pgg-good-face
)))
1341 (defun mh-mime-security-press-button (handle)
1342 "Callback from security button for part HANDLE."
1343 (if (mm-handle-multipart-ctl-parameter handle
'gnus-info
)
1344 (mh-mime-security-show-details handle
)
1345 (let ((region (mm-handle-multipart-ctl-parameter handle
'mh-region
))
1347 (setq point
(point))
1348 (goto-char (car region
))
1349 (delete-region (car region
) (cdr region
))
1350 (with-current-buffer (mm-handle-multipart-ctl-parameter handle
'buffer
)
1351 (let* ((mm-verify-option 'known
)
1352 (mm-decrypt-option 'known
)
1353 (new (mm-possibly-verify-or-decrypt (cdr handle
) handle
)))
1354 (unless (eq new
(cdr handle
))
1355 (mm-destroy-parts (cdr handle
))
1356 (setcdr handle new
))))
1357 (mh-mime-display-security handle
)
1358 (goto-char point
))))
1360 ;; These variables should already be initialized in mm-decode.el if we have a
1361 ;; recent enough Gnus. The defvars are here to avoid compiler warnings.
1362 (defvar mm-verify-function-alist nil
)
1363 (defvar mm-decrypt-function-alist nil
)
1365 (defvar pressed-details
)
1367 (defun mh-insert-mime-security-button (handle)
1368 "Display buttons for PGP message, HANDLE."
1369 (let* ((protocol (mm-handle-multipart-ctl-parameter handle
'protocol
))
1370 (crypto-type (or (nth 2 (assoc protocol mm-verify-function-alist
))
1371 (nth 2 (assoc protocol mm-decrypt-function-alist
))
1373 (type (concat crypto-type
1374 (if (equal (car handle
) "multipart/signed")
1375 " Signed" " Encrypted")
1377 (info (or (mm-handle-multipart-ctl-parameter handle
'gnus-info
)
1379 (details (mm-handle-multipart-ctl-parameter handle
'gnus-details
))
1380 pressed-details begin end face
)
1381 (setq details
(if details
(concat "\n" details
) ""))
1382 (setq pressed-details
(if mh-mime-security-button-pressed details
""))
1383 (setq face
(mh-mime-security-button-face info
))
1384 (unless (bolp) (insert "\n"))
1385 (setq begin
(point))
1387 mh-mime-security-button-line-format
1388 mh-mime-security-button-line-format-alist
1389 `(,@(gnus-local-map-property mh-mime-security-button-map
)
1390 mh-button-pressed
,mh-mime-security-button-pressed
1391 mh-callback mh-mime-security-press-button
1392 mh-line-format
,mh-mime-security-button-line-format
1395 (widget-convert-button 'link begin end
1397 :action
'mh-widget-press-button
1398 :button-keymap mh-mime-security-button-map
1400 :help-echo
"Mouse-2 click or press RET (in show buffer) to see security details.")
1401 (dolist (ov (mh-funcall-if-exists overlays-in begin end
))
1402 (mh-funcall-if-exists overlay-put ov
'evaporate t
))
1403 (when (equal info
"Failed")
1404 (let* ((type (if (equal (car handle
) "multipart/signed")
1405 "verification" "decryption"))
1406 (warning (if (equal type
"decryption")
1407 "(passphrase may be incorrect)" "")))
1408 (message "%s %s failed %s" crypto-type type warning
)))))
1410 (defun mh-mm-inline-message (handle)
1411 "Display message, HANDLE.
1412 The function decodes the message and displays it. It avoids decoding the same
1413 message multiple times."
1415 (clean-message-header mh-clean-message-header-flag
)
1416 (invisible-headers mh-invisible-header-fields-compiled
)
1417 (visible-headers nil
))
1420 (narrow-to-region b b
)
1421 (mm-insert-part handle
)
1423 (or (gethash handle
(mh-mime-handles-cache (mh-buffer-data)))
1424 (setf (gethash handle
(mh-mime-handles-cache (mh-buffer-data)))
1425 (let ((handles (or (mm-dissect-buffer nil
)
1427 (setf (mh-mime-handles (mh-buffer-data))
1429 handles
(mh-mime-handles (mh-buffer-data))))
1432 (goto-char (point-min))
1434 (cond (clean-message-header
1435 (mh-clean-msg-header (point-min)
1438 (goto-char (point-min)))
1440 (mh-start-of-uncleaned-message)))
1441 (mh-decode-message-header)
1443 ;; The other highlighting types don't need anything special
1444 (when (eq mh-highlight-citation-p
'gnus
)
1445 (mh-gnus-article-highlight-citation))
1446 (goto-char (point-min))
1447 (insert "\n------- Forwarded Message\n\n")
1448 (mh-display-smileys)
1449 (mh-display-emphasis)
1450 (mm-handle-set-undisplayer
1453 (let (buffer-read-only)
1454 (if (fboundp 'remove-specifier
)
1455 ;; This is only valid on XEmacs.
1456 (mapcar (lambda (prop)
1458 (face-property 'default prop
) (current-buffer)))
1459 '(background background-pixmap foreground
)))
1460 (delete-region ,(point-min-marker) ,(point-max-marker)))))))))
1464 ;;; Local Variables:
1465 ;;; indent-tabs-mode: nil
1466 ;;; sentence-end-double-space: nil
1469 ;;; arch-tag: 0dd36518-1b64-4a84-8f4e-59f422d3f002
1470 ;;; mh-mime.el ends here