;;; mm-decode.el --- Functions for decoding MIME things
-;; Copyright (C) 1998, 1999, 2000, 2001, 2002,
-;; 2003 Free Software Foundation, Inc.
+
+;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+;; 2005 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; MORIOKA Tomohiko <morioka@jaist.ac.jp>
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
;;; Commentary:
(require 'term))
(eval-and-compile
- (autoload 'executable-find "executable")
(autoload 'mm-inline-partial "mm-partial")
(autoload 'mm-inline-external-body "mm-extern")
(autoload 'mm-insert-inline "mm-view"))
+(defvar gnus-current-window-configuration)
+
(add-hook 'gnus-exit-gnus-hook 'mm-destroy-postponed-undisplay-list)
(defgroup mime-display ()
"Display of MIME in mail and news articles."
- :link '(custom-manual "(emacs-mime)Customization")
+ :link '(custom-manual "(emacs-mime)Display Customization")
:version "21.1"
:group 'mail
:group 'news
(defgroup mime-security ()
"MIME security in mail and news articles."
- :link '(custom-manual "(emacs-mime)Customization")
+ :link '(custom-manual "(emacs-mime)Display Customization")
:group 'mail
:group 'news
:group 'multimedia)
(defcustom mm-text-html-renderer
(cond ((locate-library "w3") 'w3)
- ((locate-library "w3m") 'w3m)
+ ((executable-find "w3m") (if (locate-library "w3m")
+ 'w3m
+ 'w3m-standalone))
((executable-find "links") 'links)
((executable-find "lynx") 'lynx)
(t 'html2text))
"Render of HTML contents.
It is one of defined renderer types, or a rendering function.
The defined renderer types are:
-`w3' : using Emacs/W3;
-`w3m' : using emacs-w3m;
-`links': using links;
-`lynx' : using lynx;
-`html2text' : using html2text;
-nil : using external viewer."
+`w3' : use Emacs/W3;
+`w3m' : use emacs-w3m;
+`w3m-standalone': use w3m;
+`links': use links;
+`lynx' : use lynx;
+`html2text' : use html2text;
+nil : use external viewer."
+ :version "22.1"
:type '(choice (const w3)
(const w3m)
+ (const w3m-standalone)
(const links)
(const lynx)
(const html2text)
(const nil)
(function))
- :version "21.3"
:group 'mime-display)
(defvar mm-inline-text-html-renderer nil
It is suggested to customize `mm-text-html-renderer' instead.")
(defcustom mm-inline-text-html-with-images nil
- "If non-nil, Gnus will allow retrieving images in the HTML contents
-with <img> tags. It has no effect on Emacs/w3. See also
-the documentation for the option `mm-w3m-safe-url-regexp'."
+ "If non-nil, Gnus will allow retrieving images in HTML contents with
+the <img> tags. It has no effect on Emacs/w3. See also the
+documentation for the `mm-w3m-safe-url-regexp' variable."
+ :version "22.1"
:type 'boolean
:group 'mime-display)
(defcustom mm-w3m-safe-url-regexp "\\`cid:"
- "Regexp that matches safe url names.
-Some HTML mails might have a trick of spammers using <img> tags.
-It is likely to be intended to verify whether you have read the
-mail. You can prevent your personal informations from leaking by
-setting this to the regexp which matches the safe url names. The
-value of the variable `w3m-safe-url-regexp' will be bound with
-this value. You may set this value to nil if you consider all
-urls to be safe."
+ "Regexp matching URLs which are considered to be safe.
+Some HTML mails might contain a nasty trick used by spammers, using
+the <img> tag which is far more evil than the [Click Here!] button.
+It is most likely intended to check whether the ominous spam mail has
+reached your eyes or not, in which case the spammer knows for sure
+that your email address is valid. It is done by embedding an
+identifier string into a URL that you might automatically retrieve
+when displaying the image. The default value is \"\\\\`cid:\" which only
+matches parts embedded to the Multipart/Related type MIME contents and
+Gnus will never connect to the spammer's site arbitrarily. You may
+set this variable to nil if you consider all urls to be safe."
+ :version "22.1"
:type '(choice (regexp :tag "Regexp")
(const :tag "All URLs are safe" nil))
:group 'mime-display)
(defcustom mm-inline-text-html-with-w3m-keymap t
"If non-nil, use emacs-w3m command keys in the article buffer."
+ :version "22.1"
:type 'boolean
:group 'mime-display)
+(defcustom mm-enable-external t
+ "Indicate whether external MIME handlers should be used.
+
+If t, all defined external MIME handlers are used. If nil, files are saved by
+`mailcap-save-binary-file'. If it is the symbol `ask', you are prompted
+before the external MIME handler is invoked."
+ :version "22.1"
+ :type '(choice (const :tag "Always" t)
+ (const :tag "Never" nil)
+ (const :tag "Ask" ask))
+ :group 'mime-display)
+
(defcustom mm-inline-media-tests
- '(("image/jpeg"
+ '(("image/p?jpeg"
mm-inline-image
(lambda (handle)
(mm-valid-and-fit-image-p 'jpeg handle)))
(locate-library "diff-mode")))
("application/emacs-lisp" mm-display-elisp-inline identity)
("application/x-emacs-lisp" mm-display-elisp-inline identity)
+ ("text/dns" mm-display-dns-inline identity)
("text/html"
mm-inline-text-html
(lambda (handle)
;; Default to displaying as text
(".*" mm-inline-text mm-readable-p))
"Alist of media types/tests saying whether types can be displayed inline."
- :type '(repeat (list (string :tag "MIME type")
+ :type '(repeat (list (regexp :tag "MIME type")
(function :tag "Display function")
(function :tag "Display test")))
:group 'mime-display)
"application/pdf" "application/x-dvi")
"List of media types for which the external viewer will not be killed
when selecting a different article."
+ :version "22.1"
:type '(repeat string)
:group 'mime-display)
(defcustom mm-automatic-display
'("text/plain" "text/enriched" "text/richtext" "text/html"
"text/x-vcard" "image/.*" "message/delivery-status" "multipart/.*"
- "message/rfc822" "text/x-patch" "application/pgp-signature"
+ "message/rfc822" "text/x-patch" "text/dns" "application/pgp-signature"
"application/emacs-lisp" "application/x-emacs-lisp"
"application/x-pkcs7-signature"
"application/pkcs7-signature" "application/x-pkcs7-mime"
:type '(choice directory (const :tag "Default" nil))
:group 'mime-display)
+(defcustom mm-attachment-file-modes 384
+ "Set the mode bits of saved attachments to this integer."
+ :version "22.1"
+ :type 'integer
+ :group 'mime-display)
+
(defcustom mm-external-terminal-program "xterm"
"The program to start an external terminal."
+ :version "22.1"
:type 'string
:group 'mime-display)
"Option of verifying signed parts.
`never', not verify; `always', always verify;
`known', only verify known protocols. Otherwise, ask user."
+ :version "22.1"
:type '(choice (item always)
(item never)
(item :tag "only known protocols" known)
"Option of decrypting encrypted parts.
`never', not decrypt; `always', always decrypt;
`known', only decrypt known protocols. Otherwise, ask user."
+ :version "22.1"
:type '(choice (item always)
(item never)
(item :tag "only known protocols" known)
(message "Destroying external MIME viewers")
(mm-destroy-parts mm-postponed-undisplay-list)))
-(defun mm-dissect-buffer (&optional no-strict-mime loose-mime)
+(defun mm-dissect-buffer (&optional no-strict-mime loose-mime from)
"Dissect the current buffer and return a list of MIME handles."
(save-excursion
- (let (ct ctl type subtype cte cd description id result from)
+ (let (ct ctl type subtype cte cd description id result)
(save-restriction
(mail-narrow-to-head)
(when (or no-strict-mime
cte (mail-fetch-field "content-transfer-encoding")
cd (mail-fetch-field "content-disposition")
description (mail-fetch-field "content-description")
- from (mail-fetch-field "from")
id (mail-fetch-field "content-id"))
+ (unless from
+ (setq from (mail-fetch-field "from")))
;; FIXME: In some circumstances, this code is running within
;; an unibyte macro. mail-extract-address-components
;; creates unibyte buffers. This `if', though not a perfect
;; solution, avoids most of them.
(if from
(setq from (cadr (mail-extract-address-components from))))))
- (when cte
- (setq cte (mail-header-strip cte)))
(if (or (not ctl)
(not (string-match "/" (car ctl))))
(mm-dissect-singlepart
(list mm-dissect-default-type)
- (and cte (intern (downcase (mail-header-remove-whitespace
- (mail-header-remove-comments
- cte)))))
+ (and cte (intern (downcase (mail-header-strip cte))))
no-strict-mime
(and cd (ignore-errors (mail-header-parse-content-disposition cd)))
description)
((equal type "multipart")
(let ((mm-dissect-default-type (if (equal subtype "digest")
"message/rfc822"
- "text/plain")))
+ "text/plain"))
+ (start (cdr (assq 'start (cdr ctl)))))
(add-text-properties 0 (length (car ctl))
(mm-alist-to-plist (cdr ctl)) (car ctl))
;; the mm-handle API so we simply store the multipart buffert
;; name as a text property of the "multipart/whatever" string.
(add-text-properties 0 (length (car ctl))
- (list 'buffer (mm-copy-to-buffer))
+ (list 'buffer (mm-copy-to-buffer)
+ 'from from
+ 'start start)
(car ctl))
- (add-text-properties 0 (length (car ctl))
- (list 'from from)
- (car ctl))
- (cons (car ctl) (mm-dissect-multipart ctl))))
+ (cons (car ctl) (mm-dissect-multipart ctl from))))
(t
(mm-possibly-verify-or-decrypt
(mm-dissect-singlepart
ctl
- (and cte (intern (downcase (mail-header-remove-whitespace
- (mail-header-remove-comments
- cte)))))
+ (and cte (intern (downcase (mail-header-strip cte))))
no-strict-mime
(and cd (ignore-errors
(mail-header-parse-content-disposition cd)))
(mm-make-handle
(mm-copy-to-buffer) ctl cte nil cdl description nil id)))
-(defun mm-dissect-multipart (ctl)
+(defun mm-dissect-multipart (ctl from)
(goto-char (point-min))
(let* ((boundary (concat "\n--" (mail-content-type-get ctl 'boundary)))
(close-delimiter (concat (regexp-quote boundary) "--[ \t]*$"))
(save-excursion
(save-restriction
(narrow-to-region start (point))
- (setq parts (nconc (list (mm-dissect-buffer t)) parts)))))
+ (setq parts (nconc (list (mm-dissect-buffer t nil from)) parts)))))
(end-of-line 2)
(or (looking-at boundary)
(forward-line 1))
(save-excursion
(save-restriction
(narrow-to-region start end)
- (setq parts (nconc (list (mm-dissect-buffer t)) parts)))))
+ (setq parts (nconc (list (mm-dissect-buffer t nil from)) parts)))))
(mm-possibly-verify-or-decrypt (nreverse parts) ctl)))
(defun mm-copy-to-buffer ()
(goto-char (point-min))
(search-forward-regexp "^\n" nil t)
(setq beg (point))
- (set-buffer (generate-new-buffer " *mm*"))
+ (set-buffer
+ ;; Preserve the data's unibyteness (for url-insert-file-contents).
+ (let ((default-enable-multibyte-characters (mm-multibyte-p)))
+ (generate-new-buffer " *mm*")))
(insert-buffer-substring obuf beg)
(current-buffer))))
(if (mm-handle-displayed-p handle)
(mm-remove-part handle)
(let* ((type (mm-handle-media-type handle))
- (method (mailcap-mime-info type)))
+ (method (mailcap-mime-info type))
+ (filename (or (mail-content-type-get
+ (mm-handle-disposition handle) 'filename)
+ (mail-content-type-get
+ (mm-handle-type handle) 'name)
+ "<file>"))
+ (external mm-enable-external))
(if (and (mm-inlinable-p handle)
(mm-inlined-p handle))
(progn
(forward-line 1)
(mm-insert-inline handle (mm-get-part handle))
'inline)
- (mm-display-external
- handle (or method 'mailcap-save-binary-file)))))))))
+ (if (and method ;; If nil, we always use "save".
+ (stringp method) ;; 'mailcap-save-binary-file
+ (or (eq mm-enable-external t)
+ (and (eq mm-enable-external 'ask)
+ (y-or-n-p
+ (concat
+ "Display part (" type
+ ") using external program"
+ ;; Can non-string method ever happen?
+ (if (stringp method)
+ (concat
+ " \"" (format method filename) "\"")
+ "")
+ "? ")))))
+ (setq external t)
+ (setq external nil))
+ (if external
+ (mm-display-external
+ handle (or method 'mailcap-save-binary-file))
+ (mm-display-external
+ handle 'mailcap-save-binary-file)))))))))
(defun mm-display-external (handle method)
"Display HANDLE using METHOD."
(mm-set-buffer-file-coding-system mm-binary-coding-system)
(insert-buffer-substring cur)
(goto-char (point-min))
- (message "Viewing with %s" method)
+ (when method
+ (message "Viewing with %s" method))
(let ((mm (current-buffer))
(non-viewer (assq 'non-viewer
(mailcap-mime-info
(let ((command (mm-mailcap-command
method file (mm-handle-type handle))))
(unwind-protect
- (start-process "*display*"
- (setq buffer
- (generate-new-buffer " *mm*"))
- shell-file-name
- shell-command-switch command)
+ (progn
+ (start-process "*display*"
+ (setq buffer
+ (generate-new-buffer " *mm*"))
+ shell-file-name
+ shell-command-switch command)
+ (set-process-sentinel
+ (get-buffer-process buffer)
+ `(lambda (process state)
+ (when (eq 'exit (process-status process))
+ ;; Don't use `ignore-errors'.
+ (condition-case nil
+ (delete-file ,file)
+ (error))
+ (condition-case nil
+ (delete-directory ,(file-name-directory file))
+ (error))
+ (condition-case nil
+ (kill-buffer ,buffer)
+ (error))
+ (condition-case nil
+ ,(macroexpand (list 'mm-handle-set-undisplayer
+ (list 'quote handle)
+ nil))
+ (error))
+ (message "Displaying %s...done" ,command)))))
(mm-handle-set-external-undisplayer
handle (cons file buffer)))
(message "Displaying %s..." command))
(string= total "'%s'")
(string= total "\"%s\""))
(setq uses-stdin nil)
- (push (mm-quote-arg
+ (push (shell-quote-argument
(gnus-map-function mm-path-name-rewrite-functions file)) out))
((string= total "%t")
- (push (mm-quote-arg (car type-list)) out))
+ (push (shell-quote-argument (car type-list)) out))
(t
- (push (mm-quote-arg (or (cdr (assq (intern sub) ctl)) "")) out))))
+ (push (shell-quote-argument (or (cdr (assq (intern sub) ctl)) "")) out))))
(push (substring method beg (length method)) out)
(when uses-stdin
(push "<" out)
- (push (mm-quote-arg
+ (push (shell-quote-argument
(gnus-map-function mm-path-name-rewrite-functions file))
out))
(mapconcat 'identity (nreverse out) "")))
(defun mm-insert-part (handle)
"Insert the contents of HANDLE in the current buffer."
- (let ((cur (current-buffer)))
- (save-excursion
- (if (member (mm-handle-media-supertype handle) '("text" "message"))
- (with-temp-buffer
- (insert-buffer-substring (mm-handle-buffer handle))
- (prog1
- (mm-decode-content-transfer-encoding
- (mm-handle-encoding handle)
- (mm-handle-media-type handle))
- (let ((temp (current-buffer)))
- (set-buffer cur)
- (insert-buffer-substring temp))))
- (mm-with-unibyte-buffer
- (insert-buffer-substring (mm-handle-buffer handle))
- (prog1
- (mm-decode-content-transfer-encoding
- (mm-handle-encoding handle)
- (mm-handle-media-type handle))
- (let ((temp (current-buffer)))
- (set-buffer cur)
- (insert-buffer-substring temp))))))))
+ (save-excursion
+ (insert (if (mm-multibyte-p)
+ (mm-string-as-multibyte (mm-get-part handle))
+ (mm-get-part handle)))))
(defun mm-file-name-delete-whitespace (file-name)
"Remove all whitespace characters from FILE-NAME."
(defun mm-file-name-delete-gotchas (filename)
"Delete shell gotchas from FILENAME."
(setq filename (gnus-replace-in-string filename "[<>|]" ""))
- (gnus-replace-in-string filename "^[.-]*" ""))
+ (gnus-replace-in-string filename "^[.-]+" ""))
-(defun mm-save-part (handle)
- "Write HANDLE to a file."
+(defun mm-save-part (handle &optional prompt)
+ "Write HANDLE to a file.
+PROMPT overrides the default one used to ask user for a file name."
(let* ((name (mail-content-type-get (mm-handle-type handle) 'name))
(filename (mail-content-type-get
(mm-handle-disposition handle) 'filename))
(setq filename (gnus-map-function mm-file-name-rewrite-functions
(file-name-nondirectory filename))))
(setq file
- (read-file-name "Save MIME part to: "
- (or mm-default-directory default-directory)
- nil nil (or filename name "")))
+ (mm-with-multibyte
+ (read-file-name (or prompt "Save MIME part to: ")
+ (or mm-default-directory default-directory)
+ nil nil (or filename name ""))))
(setq mm-default-directory (file-name-directory file))
(and (or (not (file-exists-p file))
(yes-or-no-p (format "File %s already exists; overwrite? "
(mm-with-unibyte-buffer
(mm-insert-part handle)
(let ((coding-system-for-write 'binary)
+ (current-file-modes (default-file-modes))
;; Don't re-compress .gz & al. Arguably we should make
;; `file-name-handler-alist' nil, but that would chop
;; ange-ftp, which is reasonable to use here.
(inhibit-file-name-operation 'write-region)
(inhibit-file-name-handlers
(cons 'jka-compr-handler inhibit-file-name-handlers)))
- (write-region (point-min) (point-max) file))))
+ (set-default-file-modes mm-attachment-file-modes)
+ (unwind-protect
+ (write-region (point-min) (point-max) file)
+ (set-default-file-modes current-file-modes)))))
(defun mm-pipe-part (handle)
"Pipe HANDLE to a process."
parts))
(defun mm-multiple-handles (handles)
+ (and (listp handles)
+ (> (length handles) 1)
+ (or (listp (car handles))
+ (stringp (car handles)))))
+
+(defun mm-complicated-handles (handles)
(and (listp (car handles))
(> (length handles) 1)))
(provide 'mm-decode)
+;; arch-tag: 4f35d360-56b8-4030-9388-3ed82d359b9b
;;; mm-decode.el ends here
projects / gnus / blobdiff