;;; 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, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; MORIOKA Tomohiko <morioka@jaist.ac.jp>
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 2, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; 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.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
+;; For Emacs < 22.2.
+(eval-and-compile
+ (unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
+
(require 'mail-parse)
-(require 'mailcap)
(require 'mm-bodies)
(eval-when-compile (require 'cl)
(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"))
+(autoload 'gnus-map-function "gnus-util")
+(autoload 'gnus-replace-in-string "gnus-util")
+(autoload 'gnus-read-shell-command "gnus-util")
+
+(autoload 'mm-inline-partial "mm-partial")
+(autoload 'mm-inline-external-body "mm-extern")
+(autoload 'mm-extern-cache-contents "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)
,disposition ,description ,cache ,id))
(defcustom mm-text-html-renderer
- (cond ((locate-library "w3") 'w3)
- ((locate-library "w3m") 'w3m)
+ (cond ((executable-find "w3m")
+ (if (locate-library "w3m")
+ 'w3m
+ 'w3m-standalone))
((executable-find "links") 'links)
((executable-find "lynx") 'lynx)
- (t 'html2text))
+ ((locate-library "w3") 'w3)
+ ((locate-library "html2text") 'html2text)
+ (t nil))
"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."
+`w3m' : use emacs-w3m;
+`w3m-standalone': use w3m;
+`links': use links;
+`lynx' : use lynx;
+`w3' : use Emacs/W3;
+`html2text' : use html2text;
+nil : use external viewer (default web browser)."
+ :version "23.0" ;; No Gnus
:type '(choice (const w3)
- (const w3m)
+ (const w3m :tag "emacs-w3m")
+ (const w3m-standalone :tag "standalone w3m" )
(const links)
(const lynx)
(const html2text)
- (const nil)
+ (const nil :tag "External viewer")
(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 the 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)))
("text/richtext" mm-inline-text identity)
("text/x-patch" mm-display-patch-inline
(lambda (handle)
- (locate-library "diff-mode")))
+ ;; If the diff-mode.el package is installed, the function is
+ ;; autoloaded. Checking (locate-library "diff-mode") would be trying
+ ;; to cater to broken installations. OTOH checking the function
+ ;; makes it possible to install another package which provides an
+ ;; alternative implementation of diff-mode. --Stef
+ (fboundp 'diff-mode)))
+ ;; In case mime.types uses x-diff (as does Debian's mime-support-3.40).
+ ("text/x-diff" mm-display-patch-inline
+ (lambda (handle) (fboundp '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/x-emacs-lisp"
"application/pgp-signature" "application/x-pkcs7-signature"
"application/pkcs7-signature" "application/x-pkcs7-mime"
- "application/pkcs7-mime")
+ "application/pkcs7-mime"
+ ;; Mutt still uses this even though it has already been withdrawn.
+ "application/pgp")
"List of media types that are to be displayed inline.
See also `mm-inline-media-tests', which says how to display a media
type inline."
- :type '(repeat string)
+ :type '(repeat regexp)
:group 'mime-display)
(defcustom mm-keep-viewer-alive-types
"application/pdf" "application/x-dvi")
"List of media types for which the external viewer will not be killed
when selecting a different article."
- :type '(repeat string)
+ :version "22.1"
+ :type '(repeat regexp)
:group 'mime-display)
(defcustom mm-automatic-display
- '("text/plain" "text/enriched" "text/richtext" "text/html"
+ '("text/plain" "text/enriched" "text/richtext" "text/html" "text/x-verbatim"
"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"
- "application/pkcs7-mime")
+ "application/pkcs7-mime"
+ ;; Mutt still uses this even though it has already been withdrawn.
+ "application/pgp\\'")
"A list of MIME types to be displayed automatically."
- :type '(repeat string)
+ :type '(repeat regexp)
:group 'mime-display)
(defcustom mm-attachment-override-types '("text/x-vcard"
"application/pkcs7-signature"
"application/x-pkcs7-signature")
"Types to have \"attachment\" ignored if they can be displayed inline."
- :type '(repeat string)
+ :type '(repeat regexp)
:group 'mime-display)
(defcustom mm-inline-override-types nil
"Types to be treated as attachments even if they can be displayed inline."
- :type '(repeat string)
+ :type '(repeat regexp)
:group 'mime-display)
(defcustom mm-automatic-external-display nil
"List of MIME type regexps that will be displayed externally automatically."
- :type '(repeat string)
+ :type '(repeat regexp)
:group 'mime-display)
(defcustom mm-discouraged-alternatives nil
somewhat unwanted, then the value of this variable should be set
to:
- (\"text/html\" \"text/richtext\")"
- :type '(repeat string)
+ (\"text/html\" \"text/richtext\")
+
+Adding \"image/.*\" might also be useful. Spammers use it as the
+prefered part of multipart/alternative messages. See also
+`gnus-buttonized-mime-types', to which adding \"multipart/alternative\"
+enables you to choose manually one of two types those mails include."
+ :type '(repeat regexp) ;; See `mm-preferred-alternative-precedence'.
:group 'mime-display)
(defcustom mm-tmp-directory
:type 'boolean
:group 'mime-display)
-(defvar mm-file-name-rewrite-functions nil
- "*List of functions used for rewriting file names of MIME parts.
+(defcustom mm-file-name-rewrite-functions
+ '(mm-file-name-delete-control mm-file-name-delete-gotchas)
+ "List of functions used for rewriting file names of MIME parts.
Each function takes a file name as input and returns a file name.
-Ready-made functions include
-`mm-file-name-delete-whitespace',
-`mm-file-name-trim-whitespace',
-`mm-file-name-collapse-whitespace',
-`mm-file-name-replace-whitespace',
-`capitalize', `downcase', `upcase', and
-`upcase-initials'.")
+Ready-made functions include `mm-file-name-delete-control',
+`mm-file-name-delete-gotchas' (you should not remove these two
+functions), `mm-file-name-delete-whitespace',
+`mm-file-name-trim-whitespace', `mm-file-name-collapse-whitespace',
+`mm-file-name-replace-whitespace', `capitalize', `downcase',
+`upcase', and `upcase-initials'."
+ :type '(list (set :inline t
+ (const mm-file-name-delete-control)
+ (const mm-file-name-delete-gotchas)
+ (const mm-file-name-delete-whitespace)
+ (const mm-file-name-trim-whitespace)
+ (const mm-file-name-collapse-whitespace)
+ (const mm-file-name-replace-whitespace)
+ (const capitalize)
+ (const downcase)
+ (const upcase)
+ (const upcase-initials)
+ (repeat :inline t
+ :tag "Function"
+ function)))
+ :version "23.1" ;; No Gnus
+ :group 'mime-display)
+
(defvar mm-path-name-rewrite-functions nil
"*List of functions for rewriting the full file names of MIME parts.
: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)
(defcustom mm-verify-option 'never
"Option of verifying signed parts.
`never', not verify; `always', always verify;
-`known', only verify known protocols. Otherwise, ask user."
+`known', only verify known protocols. Otherwise, ask user.
+
+When set to `always' or `known', you should add
+\"multipart/signed\" to `gnus-buttonized-mime-types' to see
+result of the verification."
+ :version "22.1"
:type '(choice (item always)
(item never)
(item :tag "only known protocols" known)
(defcustom mm-decrypt-option nil
"Option of decrypting encrypted parts.
`never', not decrypt; `always', always decrypt;
-`known', only decrypt known protocols. Otherwise, ask user."
+`known', only decrypt known protocols. Otherwise, ask user."
+ :version "22.1"
:type '(choice (item always)
(item never)
(item :tag "only known protocols" known)
(defvar mm-viewer-completion-map
(let ((map (make-sparse-keymap 'mm-viewer-completion-map)))
(set-keymap-parent map minibuffer-local-completion-map)
+ ;; Should we bind other key to minibuffer-complete-word?
+ (define-key map " " 'self-insert-command)
map)
"Keymap for input viewer with completion.")
-;; Should we bind other key to minibuffer-complete-word?
-(define-key mm-viewer-completion-map " " 'self-insert-command)
-
(defvar mm-viewer-completion-map
(let ((map (make-sparse-keymap 'mm-viewer-completion-map)))
(set-keymap-parent map minibuffer-local-completion-map)
+ ;; Should we bind other key to minibuffer-complete-word?
+ (define-key map " " 'self-insert-command)
map)
"Keymap for input viewer with completion.")
-;; Should we bind other key to minibuffer-complete-word?
-(define-key mm-viewer-completion-map " " 'self-insert-command)
-
;;; The functions.
(defun mm-alist-to-plist (alist)
(throw 'found t))))))
(defun mm-handle-set-external-undisplayer (handle function)
- "Set the undisplayer for this handle; postpone undisplaying of viewers
-for types in mm-keep-viewer-alive-types."
+ "Set the undisplayer for HANDLE to FUNCTION.
+Postpone undisplaying of viewers for types in
+`mm-keep-viewer-alive-types'."
(if (mm-keep-viewer-alive-p handle)
(let ((new-handle (copy-sequence handle)))
(mm-handle-set-undisplayer new-handle function)
(message "Destroying external MIME viewers")
(mm-destroy-parts mm-postponed-undisplay-list)))
-(defun mm-dissect-buffer (&optional no-strict-mime loose-mime)
+(autoload 'message-fetch-field "message")
+
+(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
loose-mime
(mail-fetch-field "mime-version"))
(setq ct (mail-fetch-field "content-type")
- ctl (ignore-errors (mail-header-parse-content-type ct))
+ ctl (and ct (mail-header-parse-content-type ct))
cte (mail-fetch-field "content-transfer-encoding")
cd (mail-fetch-field "content-disposition")
- description (mail-fetch-field "content-description")
- from (mail-fetch-field "from")
+ ;; Newlines in description should be stripped so as
+ ;; not to break the MIME tag into two or more lines.
+ description (message-fetch-field "content-description")
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)))
+ (setq from (cadr (mail-extract-address-components from))))
+ (if description
+ (setq description (mail-decode-encoded-word-string
+ description)))))
(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)))
+ (and cd (mail-header-parse-content-disposition cd))
description)
(setq type (split-string (car ctl) "/"))
(setq subtype (cadr type)
- type (pop type))
+ type (car type))
(setq
result
(cond
((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))
;; what really needs to be done here is a way to link a
;; MIME handle back to it's parent MIME handle (in a multilevel
;; MIME article). That would probably require changing
- ;; the mm-handle API so we simply store the multipart buffert
+ ;; the mm-handle API so we simply store the multipart buffer
;; 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)))
+ (and cd (mail-header-parse-content-disposition cd))
description id)
ctl))))
(when id
(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 ()
"Copy the contents of the current buffer to a fresh buffer."
- (save-excursion
- (let ((obuf (current-buffer))
- beg)
- (goto-char (point-min))
- (search-forward-regexp "^\n" nil t)
- (setq beg (point))
- (set-buffer (generate-new-buffer " *mm*"))
+ (let ((obuf (current-buffer))
+ (mb (mm-multibyte-p))
+ beg)
+ (goto-char (point-min))
+ (search-forward-regexp "^\n" nil t)
+ (setq beg (point))
+ (with-current-buffer
+ (generate-new-buffer " *mm*")
+ ;; Preserve the data's unibyteness (for url-insert-file-contents).
+ (mm-set-buffer-multibyte mb)
(insert-buffer-substring obuf beg)
(current-buffer))))
(goto-char (point-max)))
(mapcar 'mm-display-parts handle))))
+(autoload 'mailcap-parse-mailcaps "mailcap")
+(autoload 'mailcap-mime-info "mailcap")
+
(defun mm-display-part (handle &optional no-default)
"Display the MIME part represented by HANDLE.
Returns nil if the part is removed; inline if displayed inline;
(mailcap-parse-mailcaps)
(if (mm-handle-displayed-p handle)
(mm-remove-part handle)
- (let* ((type (mm-handle-media-type handle))
- (method (mailcap-mime-info type)))
- (if (and (mm-inlinable-p handle)
- (mm-inlined-p handle))
+ (let* ((ehandle (if (equal (mm-handle-media-type handle)
+ "message/external-body")
+ (progn
+ (unless (mm-handle-cache handle)
+ (mm-extern-cache-contents handle))
+ (mm-handle-cache handle))
+ handle))
+ (type (mm-handle-media-type ehandle))
+ (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 ehandle)
+ (mm-inlined-p ehandle))
(progn
(forward-line 1)
(mm-display-inline handle)
(when (or method
(not no-default))
(if (and (not method)
- (equal "text" (car (split-string type))))
+ (equal "text" (car (split-string type "/"))))
(progn
(forward-line 1)
(mm-insert-inline handle (mm-get-part handle))
'inline)
- (mm-display-external
- handle (or method 'mailcap-save-binary-file)))))))))
+ (setq external
+ (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) "\"")
+ "")
+ "? "))))))
+ (if external
+ (mm-display-external
+ handle (or method 'mailcap-save-binary-file))
+ (mm-display-external
+ handle 'mailcap-save-binary-file)))))))))
+
+(declare-function gnus-configure-windows "gnus-win" (setting &optional force))
+(defvar mailcap-mime-extensions) ; mailcap-mime-info autoloads
(defun mm-display-external (handle method)
"Display HANDLE using METHOD."
(set-buffer (generate-new-buffer " *mm*"))
(setq method nil))
(mm-insert-part handle)
+ (mm-add-meta-html-tag handle)
(let ((win (get-buffer-window cur t)))
(when win
(select-window win)))
(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
(mm-handle-set-undisplayer handle mm)))))
;; The function is a string to be executed.
(mm-insert-part handle)
+ (mm-add-meta-html-tag handle)
(let* ((dir (mm-make-temp-file
(expand-file-name "emm." mm-tmp-directory) 'dir))
(filename (or
(copiousoutput (assoc "copiousoutput" mime-info))
file buffer)
;; We create a private sub-directory where we store our files.
- (set-file-modes dir 448)
+ (set-file-modes dir #o700)
(if filename
(setq file (expand-file-name
(gnus-map-function mm-file-name-rewrite-functions
(file-name-nondirectory filename))
dir))
- (setq file (mm-make-temp-file (expand-file-name "mm." dir))))
+ ;; Use nametemplate (defined in RFC1524) if it is specified
+ ;; in mailcap.
+ (let ((suffix (cdr (assoc "nametemplate" mime-info))))
+ (if (and suffix
+ (string-match "\\`%s\\(\\..+\\)\\'" suffix))
+ (setq suffix (match-string 1 suffix))
+ ;; Otherwise, use a suffix according to
+ ;; `mailcap-mime-extensions'.
+ (setq suffix (car (rassoc (mm-handle-media-type handle)
+ mailcap-mime-extensions))))
+ (setq file (mm-make-temp-file (expand-file-name "mm." dir)
+ nil suffix))))
(let ((coding-system-for-write mm-binary-coding-system))
(write-region (point-min) (point-max) file nil 'nomesg))
+ ;; The file is deleted after the viewer exists. If the users edits
+ ;; the file, changes will be lost. Set file to read-only to make it
+ ;; clear.
+ (set-file-modes file #o400)
(message "Viewing with %s" method)
(cond
(needsterm
(mm-mailcap-command
method file (mm-handle-type handle)))
(if (buffer-live-p buffer)
- (save-excursion
- (set-buffer buffer)
+ (with-current-buffer buffer
(buffer-string))))
(progn
(ignore-errors (delete-file file))
(ignore-errors (kill-buffer buffer))))))
'inline)
(t
+ ;; Deleting the temp file should be postponed for some wrappers,
+ ;; shell scripts, and so on, which might exit right after having
+ ;; started a viewer command as a background job.
(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)
+ (lexical-let ;; Don't use `let'.
+ ;; Function used to remove temp file and directory.
+ ((fn `(lambda nil
+ ;; Don't use `ignore-errors'.
+ (condition-case nil
+ (delete-file ,file)
+ (error))
+ (condition-case nil
+ (delete-directory
+ ,(file-name-directory file))
+ (error))))
+ ;; Form uses to kill the process buffer and
+ ;; remove the undisplayer.
+ (fm `(progn
+ (kill-buffer ,buffer)
+ ,(macroexpand
+ (list 'mm-handle-set-undisplayer
+ (list 'quote handle)
+ nil))))
+ ;; Message to be issued when the process exits.
+ (done (format "Displaying %s...done" command))
+ ;; In particular, the timer object (which is
+ ;; a vector in Emacs but is a list in XEmacs)
+ ;; requires that it is lexically scoped.
+ (timer (run-at-time 2.0 nil 'ignore)))
+ (if (featurep 'xemacs)
+ (lambda (process state)
+ (when (eq 'exit (process-status process))
+ (if (memq timer itimer-list)
+ (set-itimer-function timer fn)
+ (funcall fn))
+ (ignore-errors (eval fm))
+ (message "%s" done)))
+ (lambda (process state)
+ (when (eq 'exit (process-status process))
+ (if (memq timer timer-list)
+ (timer-set-function timer fn)
+ (funcall fn))
+ (ignore-errors (eval fm))
+ (message "%s" done)))))))
(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) "")))
(cond
;; Internally displayed part.
((mm-annotationp object)
- (delete-annotation object))
+ (if (featurep 'xemacs)
+ (delete-annotation object)))
((or (functionp object)
(and (listp object)
(eq (car object) 'lambda)))
(funcall object))
;; Externally displayed part.
((consp object)
+ (condition-case ()
+ (while (get-buffer-process (cdr object))
+ (interrupt-process (get-buffer-process (cdr object)))
+ (message "Waiting for external displayer to die...")
+ (sit-for 1))
+ (quit)
+ (error))
+ (ignore-errors (and (cdr object) (kill-buffer (cdr object))))
+ (message "Waiting for external displayer to die...done")
(ignore-errors (delete-file (car object)))
- (ignore-errors (delete-directory (file-name-directory (car object))))
- (ignore-errors (and (cdr object) (kill-buffer (cdr object)))))
+ (ignore-errors (delete-directory (file-name-directory
+ (car object)))))
((bufferp object)
(when (buffer-live-p object)
(kill-buffer object)))))
methods nil)))
result))
-(defun mm-inlinable-p (handle)
- "Say whether HANDLE can be displayed inline."
+(defun mm-inlinable-p (handle &optional type)
+ "Say whether HANDLE can be displayed inline.
+TYPE is the mime-type of the object; it defaults to the one given
+in HANDLE."
+ (unless type (setq type (mm-handle-media-type handle)))
(let ((alist mm-inline-media-tests)
- (type (mm-handle-media-type handle))
test)
(while alist
(when (string-match (caar alist) type)
;;; Functions for outputting parts
;;;
-(defun mm-get-part (handle)
- "Return the contents of HANDLE as a string."
- (mm-with-unibyte-buffer
- (insert (with-current-buffer (mm-handle-buffer handle)
- (mm-with-unibyte-current-buffer
- (buffer-string))))
- (mm-decode-content-transfer-encoding
- (mm-handle-encoding handle)
- (mm-handle-media-type handle))
- (buffer-string)))
-
-(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))))))))
+(defmacro mm-with-part (handle &rest forms)
+ "Run FORMS in the temp buffer containing the contents of HANDLE."
+ ;; The handle-buffer's content is a sequence of bytes, not a sequence of
+ ;; chars, so the buffer should be unibyte. It may happen that the
+ ;; handle-buffer is multibyte for some reason, in which case now is a good
+ ;; time to adjust it, since we know at this point that it should
+ ;; be unibyte.
+ `(let* ((handle ,handle))
+ (with-temp-buffer
+ (mm-disable-multibyte)
+ (insert-buffer-substring (mm-handle-buffer handle))
+ (mm-decode-content-transfer-encoding
+ (mm-handle-encoding handle)
+ (mm-handle-media-type handle))
+ ,@forms)))
+(put 'mm-with-part 'lisp-indent-function 1)
+(put 'mm-with-part 'edebug-form-spec '(body))
+
+(defun mm-get-part (handle &optional no-cache)
+ "Return the contents of HANDLE as a string.
+If NO-CACHE is non-nil, cached contents of a message/external-body part
+are ignored."
+ (if (and (not no-cache)
+ (equal (mm-handle-media-type handle) "message/external-body"))
+ (progn
+ (unless (mm-handle-cache handle)
+ (mm-extern-cache-contents handle))
+ (with-current-buffer (mm-handle-buffer (mm-handle-cache handle))
+ (buffer-string)))
+ (mm-with-part handle
+ (buffer-string))))
+
+(defun mm-insert-part (handle &optional no-cache)
+ "Insert the contents of HANDLE in the current buffer.
+If NO-CACHE is non-nil, cached contents of a message/external-body part
+are ignored."
+ (let ((text (cond ((eq (mail-content-type-get (mm-handle-type handle)
+ 'charset)
+ 'gnus-decoded)
+ (with-current-buffer (mm-handle-buffer handle)
+ (buffer-string)))
+ ((mm-multibyte-p)
+ (mm-string-to-multibyte (mm-get-part handle no-cache)))
+ (t
+ (mm-get-part handle no-cache)))))
+ (save-restriction
+ (widen)
+ (goto-char
+ (prog1
+ (point)
+ (if (and (eq (get-char-property (max (point-min) (1- (point))) 'face)
+ 'mm-uu-extract)
+ (eq (get-char-property 0 'face text) 'mm-uu-extract))
+ ;; Separate the extracted parts that have the same faces.
+ (insert "\n" text)
+ (insert text)))))))
(defun mm-file-name-delete-whitespace (file-name)
"Remove all whitespace characters from FILE-NAME."
(defun mm-file-name-replace-whitespace (file-name)
"Replace whitespace characters in FILE-NAME with underscores.
-Set `mm-file-name-replace-whitespace' to any other string if you do not
-like underscores."
+Set the option `mm-file-name-replace-whitespace' to any other
+string if you do not like underscores."
(let ((s (or mm-file-name-replace-whitespace "_")))
(while (string-match "\\s-" file-name)
(setq file-name (replace-match s t t file-name))))
file-name)
-(defun mm-save-part (handle)
- "Write HANDLE to a file."
- (let* ((name (mail-content-type-get (mm-handle-type handle) 'name))
- (filename (mail-content-type-get
- (mm-handle-disposition handle) 'filename))
- file)
+(defun mm-file-name-delete-control (filename)
+ "Delete control characters from FILENAME."
+ (gnus-replace-in-string filename "[\x00-\x1f\x7f]" ""))
+
+(defun mm-file-name-delete-gotchas (filename)
+ "Delete shell gotchas from FILENAME."
+ (setq filename (gnus-replace-in-string filename "[<>|]" ""))
+ (gnus-replace-in-string filename "^[.-]+" ""))
+
+(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 ((filename (or (mail-content-type-get
+ (mm-handle-disposition handle) 'filename)
+ (mail-content-type-get
+ (mm-handle-type handle) 'name)))
+ file)
(when 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 "")))
+ (read-file-name (or prompt "Save MIME part to: ")
+ (or mm-default-directory default-directory)
+ nil nil (or filename "")))
(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-save-part-to-file handle file)
file))))
+(defun mm-add-meta-html-tag (handle &optional charset force-charset)
+ "Add meta html tag to specify CHARSET of HANDLE in the current buffer.
+CHARSET defaults to the one HANDLE specifies. Existing meta tag that
+specifies charset will not be modified unless FORCE-CHARSET is non-nil.
+Return t if meta tag is added or replaced."
+ (when (equal (mm-handle-media-type handle) "text/html")
+ (when (or charset
+ (setq charset (mail-content-type-get (mm-handle-type handle)
+ 'charset)))
+ (setq charset (format "\
+<meta http-equiv=\"Content-Type\" content=\"text/html; charset=%s\">" charset))
+ (let ((case-fold-search t))
+ (goto-char (point-min))
+ (if (re-search-forward "\
+<meta\\s-+http-equiv=[\"']?content-type[\"']?\\s-+content=[\"']\
+text/\\(\\sw+\\)\\(?:\;\\s-*charset=\\(.+\\)\\)?[\"'][^>]*>" nil t)
+ (if (and (not force-charset)
+ (match-beginning 2)
+ (string-match "\\`html\\'" (match-string 1)))
+ ;; Don't modify existing meta tag.
+ nil
+ ;; Replace it with the one specifying charset.
+ (replace-match charset)
+ t)
+ (if (re-search-forward "<head>\\s-*" nil t)
+ (insert charset "\n")
+ (re-search-forward "<html\\(?:\\s-+[^>]+\\|\\s-*\\)>\\s-*" nil t)
+ (insert "<head>\n" charset "\n</head>\n"))
+ t)))))
+
(defun mm-save-part-to-file (handle file)
(mm-with-unibyte-buffer
(mm-insert-part handle)
- (let ((coding-system-for-write 'binary)
+ (mm-add-meta-html-tag handle)
+ (let ((current-file-modes (default-file-modes)))
+ (set-default-file-modes mm-attachment-file-modes)
+ (unwind-protect
;; 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))))
+ (mm-write-region (point-min) (point-max) file nil nil nil 'binary t)
+ (set-default-file-modes current-file-modes)))))
(defun mm-pipe-part (handle)
"Pipe HANDLE to a process."
(let* ((name (mail-content-type-get (mm-handle-type handle) 'name))
(command
- (read-string "Shell command on MIME part: " mm-last-shell-command)))
+ (gnus-read-shell-command
+ "Shell command on MIME part: " mm-last-shell-command)))
(mm-with-unibyte-buffer
(mm-insert-part handle)
+ (mm-add-meta-html-tag handle)
(let ((coding-system-for-write 'binary))
(shell-command-on-region (point-min) (point-max) command nil)))))
(mm-handle-set-cache handle spec))))))
(defun mm-create-image-xemacs (type)
- (cond
- ((equal type "xbm")
- ;; xbm images require special handling, since
- ;; the only way to create glyphs from these
- ;; (without a ton of work) is to write them
- ;; out to a file, and then create a file
- ;; specifier.
- (let ((file (mm-make-temp-file
- (expand-file-name "emm.xbm"
- mm-tmp-directory))))
- (unwind-protect
- (progn
- (write-region (point-min) (point-max) file)
- (make-glyph (list (cons 'x file))))
- (ignore-errors
- (delete-file file)))))
- (t
- (make-glyph
- (vector
- (or (mm-image-type-from-buffer)
- (intern type))
- :data (buffer-string))))))
+ (when (featurep 'xemacs)
+ (cond
+ ((equal type "xbm")
+ ;; xbm images require special handling, since
+ ;; the only way to create glyphs from these
+ ;; (without a ton of work) is to write them
+ ;; out to a file, and then create a file
+ ;; specifier.
+ (let ((file (mm-make-temp-file
+ (expand-file-name "emm" mm-tmp-directory)
+ nil ".xbm")))
+ (unwind-protect
+ (progn
+ (write-region (point-min) (point-max) file)
+ (make-glyph (list (cons 'x file))))
+ (ignore-errors
+ (delete-file file)))))
+ (t
+ (make-glyph
+ (vector
+ (or (mm-image-type-from-buffer)
+ (intern type))
+ :data (buffer-string)))))))
+
+(declare-function image-size "image.c" (spec &optional pixels frame))
(defun mm-image-fit-p (handle)
"Say whether the image in HANDLE will fit the current window."
(let ((image (mm-get-image handle)))
- (if (fboundp 'glyph-width)
- ;; XEmacs' glyphs can actually tell us about their width, so
- ;; lets be nice and smart about them.
- (or mm-inline-large-images
- (and (< (glyph-width image) (window-pixel-width))
- (< (glyph-height image) (window-pixel-height))))
- (let* ((size (image-size image))
- (w (car size))
- (h (cdr size)))
- (or mm-inline-large-images
- (and (< h (1- (window-height))) ; Don't include mode line.
- (< w (window-width))))))))
+ (or (not image)
+ (if (featurep 'xemacs)
+ ;; XEmacs' glyphs can actually tell us about their width, so
+ ;; lets be nice and smart about them.
+ (or mm-inline-large-images
+ (and (<= (glyph-width image) (window-pixel-width))
+ (<= (glyph-height image) (window-pixel-height))))
+ (let* ((size (image-size image))
+ (w (car size))
+ (h (cdr size)))
+ (or mm-inline-large-images
+ (and (<= h (1- (window-height))) ; Don't include mode line.
+ (<= w (window-width)))))))))
(defun mm-valid-image-format-p (format)
"Say whether FORMAT can be displayed natively by Emacs."
(save-excursion
(save-restriction
(narrow-to-region start (1- (point)))
- (when (let ((ctl (ignore-errors
- (mail-header-parse-content-type
- (mail-fetch-field "content-type")))))
+ (when (let* ((ct (mail-fetch-field "content-type"))
+ (ctl (and ct (mail-header-parse-content-type ct))))
(if notp
(not (equal (car ctl) type))
(equal (car ctl) type)))
(save-excursion
(save-restriction
(narrow-to-region start end)
- (when (let ((ctl (ignore-errors
- (mail-header-parse-content-type
- (mail-fetch-field "content-type")))))
+ (when (let* ((ct (mail-fetch-field "content-type"))
+ (ctl (and ct (mail-header-parse-content-type ct))))
(if notp
(not (equal (car ctl) type))
(equal (car ctl) type)))
(put-text-property 0 (length (car handle)) parameter value
(car handle))))
+(autoload 'mm-view-pkcs7 "mm-view")
+
(defun mm-possibly-verify-or-decrypt (parts ctl)
(let ((type (car ctl))
(subtype (cadr (split-string (car ctl) "/")))
(format "protocol=%s" protocol))))))
(save-excursion
(if func
- (funcall func parts ctl)
+ (setq parts (funcall func parts ctl))
(mm-set-handle-multipart-parameter
mm-security-handle 'gnus-details
(format "Unknown sign protocol (%s)" protocol))))))
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