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bc511a64f6
Most of this change is to boilerplate commentary such as license URLs. This change was prompted by ftp://ftp.gnu.org's going-away party, planned for November. Change these FTP URLs to https://ftp.gnu.org instead. Make similar changes for URLs to other organizations moving away from FTP. Also, change HTTP to HTTPS for URLs to gnu.org and fsf.org when this works, as this will further help defend against man-in-the-middle attacks (for this part I omitted the MS-DOS and MS-Windows sources and the test tarballs to keep the workload down). HTTPS is not fully working to lists.gnu.org so I left those URLs alone for now.
109 lines
3.5 KiB
EmacsLisp
109 lines
3.5 KiB
EmacsLisp
;;; mm-archive.el --- Functions for parsing archive files as MIME
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;; Copyright (C) 2012-2017 Free Software Foundation, Inc.
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;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;; Code:
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(require 'mm-decode)
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(autoload 'gnus-recursive-directory-files "gnus-util")
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(autoload 'mailcap-extension-to-mime "mailcap")
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(defvar mm-archive-decoders
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'(("application/ms-tnef" t "tnef" "-f" "-" "-C")
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("application/zip" nil "unzip" "-j" "-x" "%f" "-d")
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("application/x-gtar-compressed" nil "tar" "xzf" "-" "-C")
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("application/x-tar-gz" nil "tar" "xzf" "-" "-C")
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("application/x-tar" nil "tar" "xf" "-" "-C")))
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(defun mm-archive-decoders () mm-archive-decoders)
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(defun mm-dissect-archive (handle)
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(let* ((type (car (mm-handle-type handle)))
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(decoder (cddr (assoc type mm-archive-decoders)))
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dir)
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(unless decoder
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(error "No decoder found for %s" type))
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(setq dir (make-temp-file (expand-file-name "emm." mm-tmp-directory) 'dir))
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(set-file-modes dir #o700)
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(unwind-protect
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(progn
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(mm-with-unibyte-buffer
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(mm-insert-part handle)
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(if (member "%f" decoder)
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(let ((file (expand-file-name "mail.zip" dir)))
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(write-region (point-min) (point-max) file nil 'silent)
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(setq decoder (copy-sequence decoder))
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(setcar (member "%f" decoder) file)
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(apply 'call-process (car decoder) nil nil nil
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(append (cdr decoder) (list dir)))
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(delete-file file))
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(apply 'call-process-region (point-min) (point-max) (car decoder)
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nil (get-buffer-create "*tnef*")
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nil (append (cdr decoder) (list dir)))))
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`("multipart/mixed"
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,handle
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,@(mm-archive-list-files (gnus-recursive-directory-files dir))))
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(delete-directory dir t))))
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(defun mm-archive-list-files (files)
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(let ((handles nil)
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type disposition)
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(dolist (file files)
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(with-temp-buffer
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(when (string-match "\\.\\([^.]+\\)$" file)
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(setq type (mailcap-extension-to-mime (match-string 1 file))))
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(unless type
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(setq type "application/octet-stream"))
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(setq disposition
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(if (string-match "^image/\\|^text/" type)
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"inline"
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"attachment"))
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(insert (format "Content-type: %s\n" type))
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(insert "Content-Transfer-Encoding: 8bit\n\n")
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(insert-file-contents file)
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(push
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(mm-make-handle (mm-copy-to-buffer)
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(list type)
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'8bit nil
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`(,disposition (filename . ,file))
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nil nil nil)
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handles)))
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handles))
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(defun mm-archive-dissect-and-inline (handle)
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(let ((start (point-marker)))
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(save-restriction
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(narrow-to-region (point) (point))
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(dolist (handle (cddr (mm-dissect-archive handle)))
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(goto-char (point-max))
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(mm-display-inline handle))
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(goto-char (point-max))
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(mm-handle-set-undisplayer
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handle
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`(lambda ()
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(let ((inhibit-read-only t)
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(end ,(point-marker)))
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(remove-images ,start end)
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(delete-region ,start end)))))))
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(provide 'mm-archive)
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;; mm-archive.el ends here
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