mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-14 09:39:42 +00:00
b07e014310
Patches applied: * gnus--rel--5.10 (patch 167) - Update from CVS 2006-11-18 Andreas Seltenreich <uwi7@rz.uni-karlsruhe.de> * lisp/gnus/mm-uu.el (mm-uu-pgp-signed-extract-1): Make last fix more thorough and comment it. * lisp/gnus/nnslashdot.el (nnslashdot-retrieve-headers-1): Update regexp. Revision: emacs@sv.gnu.org/emacs--devo--0--patch-518
625 lines
20 KiB
EmacsLisp
625 lines
20 KiB
EmacsLisp
;;; mm-uu.el --- Return uu stuff as mm handles
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;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
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;; 2005, 2006 Free Software Foundation, Inc.
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;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
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;; Keywords: postscript uudecode binhex shar forward gnatsweb pgp
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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 2, or (at your option)
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;; any later version.
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;;
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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; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;;; Code:
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(eval-when-compile (require 'cl))
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(require 'mail-parse)
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(require 'nnheader)
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(require 'mm-decode)
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(require 'mailcap)
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(require 'mml2015)
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(autoload 'uudecode-decode-region "uudecode")
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(autoload 'uudecode-decode-region-external "uudecode")
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(autoload 'uudecode-decode-region-internal "uudecode")
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(autoload 'binhex-decode-region "binhex")
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(autoload 'binhex-decode-region-external "binhex")
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(autoload 'binhex-decode-region-internal "binhex")
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(autoload 'yenc-decode-region "yenc")
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(autoload 'yenc-extract-filename "yenc")
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(defcustom mm-uu-decode-function 'uudecode-decode-region
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"*Function to uudecode.
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Internal function is done in Lisp by default, therefore decoding may
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appear to be horribly slow. You can make Gnus use an external
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decoder, such as uudecode."
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:type '(choice
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(function-item :tag "Auto detect" uudecode-decode-region)
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(function-item :tag "Internal" uudecode-decode-region-internal)
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(function-item :tag "External" uudecode-decode-region-external))
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:group 'gnus-article-mime)
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(defcustom mm-uu-binhex-decode-function 'binhex-decode-region
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"*Function to binhex decode.
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Internal function is done in elisp by default, therefore decoding may
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appear to be horribly slow . You can make Gnus use the external Unix
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decoder, such as hexbin."
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:type '(choice (function-item :tag "Auto detect" binhex-decode-region)
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(function-item :tag "Internal" binhex-decode-region-internal)
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(function-item :tag "External" binhex-decode-region-external))
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:group 'gnus-article-mime)
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(defvar mm-uu-yenc-decode-function 'yenc-decode-region)
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(defvar mm-uu-pgp-beginning-signature
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"^-----BEGIN PGP SIGNATURE-----")
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(defvar mm-uu-beginning-regexp nil)
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(defvar mm-dissect-disposition "inline"
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"The default disposition of uu parts.
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This can be either \"inline\" or \"attachment\".")
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(defcustom mm-uu-emacs-sources-regexp "\\.emacs\\.sources"
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"The regexp of Emacs sources groups."
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:version "22.1"
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:type 'regexp
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:group 'gnus-article-mime)
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(defcustom mm-uu-diff-groups-regexp
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"\\(gmane\\|gnu\\)\\..*\\(diff\\|commit\\|cvs\\|bug\\|devel\\)"
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"Regexp matching diff groups."
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:version "22.1"
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:type 'regexp
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:group 'gnus-article-mime)
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(defvar mm-uu-type-alist
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'((postscript
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"^%!PS-"
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"^%%EOF$"
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mm-uu-postscript-extract
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nil)
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(uu
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"^begin[ \t]+0?[0-7][0-7][0-7][ \t]+"
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"^end[ \t]*$"
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mm-uu-uu-extract
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mm-uu-uu-filename)
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(binhex
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"^:...............................................................$"
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":$"
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mm-uu-binhex-extract
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nil
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mm-uu-binhex-filename)
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(yenc
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"^=ybegin.*size=[0-9]+.*name=.*$"
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"^=yend.*size=[0-9]+"
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mm-uu-yenc-extract
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mm-uu-yenc-filename)
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(shar
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"^#! */bin/sh"
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"^exit 0$"
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mm-uu-shar-extract)
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(forward
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;; Thanks to Edward J. Sabol <sabol@alderaan.gsfc.nasa.gov> and
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;; Peter von der Ah\'e <pahe@daimi.au.dk>
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"^-+ \\(Start of \\)?Forwarded message"
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"^-+ End \\(of \\)?forwarded message"
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mm-uu-forward-extract
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nil
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mm-uu-forward-test)
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(gnatsweb
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"^----gnatsweb-attachment----"
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nil
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mm-uu-gnatsweb-extract)
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(pgp-signed
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"^-----BEGIN PGP SIGNED MESSAGE-----"
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"^-----END PGP SIGNATURE-----"
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mm-uu-pgp-signed-extract
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nil
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nil)
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(pgp-encrypted
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"^-----BEGIN PGP MESSAGE-----"
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"^-----END PGP MESSAGE-----"
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mm-uu-pgp-encrypted-extract
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nil
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nil)
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(pgp-key
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"^-----BEGIN PGP PUBLIC KEY BLOCK-----"
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"^-----END PGP PUBLIC KEY BLOCK-----"
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mm-uu-pgp-key-extract
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mm-uu-gpg-key-skip-to-last
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nil)
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(emacs-sources
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"^;;;?[ \t]*[^ \t]+\\.el[ \t]*--"
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"^;;;?[ \t]*\\([^ \t]+\\.el\\)[ \t]+ends here"
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mm-uu-emacs-sources-extract
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nil
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mm-uu-emacs-sources-test)
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(diff
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"^Index: "
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nil
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mm-uu-diff-extract
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nil
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mm-uu-diff-test))
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"A list of specifications for non-MIME attachments.
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Each element consist of the following entries: label,
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start-regexp, end-regexp, extract-function, test-function.
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After modifying this list you must run \\[mm-uu-configure].")
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(defcustom mm-uu-configure-list '((shar . disabled))
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"A list of mm-uu configuration.
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To disable dissecting shar codes, for instance, add
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`(shar . disabled)' to this list."
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:type 'alist
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:options (mapcar (lambda (entry)
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(list (car entry) '(const disabled)))
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mm-uu-type-alist)
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:group 'gnus-article-mime)
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(defvar mm-uu-text-plain-type '("text/plain" (charset . gnus-decoded))
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"MIME type and parameters for text/plain parts.
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`gnus-decoded' is a fake charset, which means no further decoding.")
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;; functions
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(defsubst mm-uu-type (entry)
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(car entry))
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(defsubst mm-uu-beginning-regexp (entry)
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(nth 1 entry))
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(defsubst mm-uu-end-regexp (entry)
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(nth 2 entry))
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(defsubst mm-uu-function-extract (entry)
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(nth 3 entry))
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(defsubst mm-uu-function-1 (entry)
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(nth 4 entry))
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(defsubst mm-uu-function-2 (entry)
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(nth 5 entry))
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(defun mm-uu-copy-to-buffer (&optional from to)
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"Copy the contents of the current buffer to a fresh buffer.
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Return that buffer."
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(let ((obuf (current-buffer))
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(coding-system
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;; Might not exist in non-MULE XEmacs
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(when (boundp 'buffer-file-coding-system)
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buffer-file-coding-system)))
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(with-current-buffer (generate-new-buffer " *mm-uu*")
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(setq buffer-file-coding-system coding-system)
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(insert-buffer-substring obuf from to)
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(current-buffer))))
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(defun mm-uu-configure-p (key val)
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(member (cons key val) mm-uu-configure-list))
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(defun mm-uu-configure (&optional symbol value)
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"Configure detection of non-MIME attachments."
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(interactive)
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(if symbol (set-default symbol value))
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(setq mm-uu-beginning-regexp nil)
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(mapcar (lambda (entry)
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(if (mm-uu-configure-p (mm-uu-type entry) 'disabled)
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nil
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(setq mm-uu-beginning-regexp
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(concat mm-uu-beginning-regexp
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(if mm-uu-beginning-regexp "\\|")
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(mm-uu-beginning-regexp entry)))))
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mm-uu-type-alist))
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(mm-uu-configure)
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(eval-when-compile
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(defvar file-name)
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(defvar start-point)
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(defvar end-point)
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(defvar entry))
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(defun mm-uu-uu-filename ()
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(if (looking-at ".+")
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(setq file-name
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(let ((nnheader-file-name-translation-alist
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'((?/ . ?,) (?\ . ?_) (?* . ?_) (?$ . ?_))))
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(nnheader-translate-file-chars (match-string 0))))))
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(defun mm-uu-binhex-filename ()
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(setq file-name
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(ignore-errors
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(binhex-decode-region start-point end-point t))))
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(defun mm-uu-yenc-filename ()
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(goto-char start-point)
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(setq file-name
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(ignore-errors
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(yenc-extract-filename))))
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(defun mm-uu-forward-test ()
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(save-excursion
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(goto-char start-point)
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(forward-line)
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(looking-at "[\r\n]*[a-zA-Z][a-zA-Z0-9-]*:")))
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(defun mm-uu-postscript-extract ()
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(mm-make-handle (mm-uu-copy-to-buffer start-point end-point)
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'("application/postscript")))
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(defun mm-uu-emacs-sources-extract ()
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(mm-make-handle (mm-uu-copy-to-buffer start-point end-point)
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'("application/emacs-lisp" (charset . gnus-decoded))
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nil nil
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(list mm-dissect-disposition
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(cons 'filename file-name))))
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(eval-when-compile
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(defvar gnus-newsgroup-name))
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(defun mm-uu-emacs-sources-test ()
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(setq file-name (match-string 1))
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(and gnus-newsgroup-name
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mm-uu-emacs-sources-regexp
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(string-match mm-uu-emacs-sources-regexp gnus-newsgroup-name)))
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(defun mm-uu-diff-extract ()
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(mm-make-handle (mm-uu-copy-to-buffer start-point end-point)
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'("text/x-patch" (charset . gnus-decoded))))
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(defun mm-uu-diff-test ()
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(and gnus-newsgroup-name
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mm-uu-diff-groups-regexp
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(string-match mm-uu-diff-groups-regexp gnus-newsgroup-name)))
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(defun mm-uu-forward-extract ()
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(mm-make-handle (mm-uu-copy-to-buffer
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(progn (goto-char start-point) (forward-line) (point))
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(progn (goto-char end-point) (forward-line -1) (point)))
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'("message/rfc822" (charset . gnus-decoded))))
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(defun mm-uu-uu-extract ()
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(mm-make-handle (mm-uu-copy-to-buffer start-point end-point)
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(list (or (and file-name
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(string-match "\\.[^\\.]+$"
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file-name)
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(mailcap-extension-to-mime
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(match-string 0 file-name)))
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"application/octet-stream"))
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'x-uuencode nil
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(if (and file-name (not (equal file-name "")))
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(list mm-dissect-disposition
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(cons 'filename file-name)))))
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(defun mm-uu-binhex-extract ()
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(mm-make-handle (mm-uu-copy-to-buffer start-point end-point)
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(list (or (and file-name
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(string-match "\\.[^\\.]+$" file-name)
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(mailcap-extension-to-mime
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(match-string 0 file-name)))
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"application/octet-stream"))
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'x-binhex nil
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(if (and file-name (not (equal file-name "")))
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(list mm-dissect-disposition
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(cons 'filename file-name)))))
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(defun mm-uu-yenc-extract ()
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(mm-make-handle (mm-uu-copy-to-buffer start-point end-point)
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(list (or (and file-name
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(string-match "\\.[^\\.]+$" file-name)
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(mailcap-extension-to-mime
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(match-string 0 file-name)))
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"application/octet-stream"))
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'x-yenc nil
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(if (and file-name (not (equal file-name "")))
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(list mm-dissect-disposition
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(cons 'filename file-name)))))
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(defun mm-uu-shar-extract ()
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(mm-make-handle (mm-uu-copy-to-buffer start-point end-point)
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'("application/x-shar")))
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(defun mm-uu-gnatsweb-extract ()
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(save-restriction
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(goto-char start-point)
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(forward-line)
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(narrow-to-region (point) end-point)
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(mm-dissect-buffer t)))
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(defun mm-uu-pgp-signed-test (&rest rest)
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(and
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mml2015-use
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(mml2015-clear-verify-function)
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(cond
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((eq mm-verify-option 'never) nil)
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((eq mm-verify-option 'always) t)
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((eq mm-verify-option 'known) t)
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(t (prog1
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(y-or-n-p "Verify pgp signed part? ")
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(message ""))))))
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(eval-when-compile
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(defvar gnus-newsgroup-charset))
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(defun mm-uu-pgp-signed-extract-1 (handles ctl)
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(let ((buf (mm-uu-copy-to-buffer (point-min) (point-max))))
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(with-current-buffer buf
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(if (mm-uu-pgp-signed-test)
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(progn
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(mml2015-clean-buffer)
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(let ((coding-system-for-write (or gnus-newsgroup-charset
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'iso-8859-1)))
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(funcall (mml2015-clear-verify-function))))
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(when (and mml2015-use (null (mml2015-clear-verify-function)))
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-details
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(format "Clear verification not supported by `%s'.\n" mml2015-use))))
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(goto-char (point-min))
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(forward-line)
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;; We need to be careful not to strip beyond the armor headers.
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;; Previously, an attacker could replace the text inside our
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;; markup with trailing garbage by injecting whitespace into the
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;; message.
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(while (looking-at "Hash:") ; The only header allowed in cleartext
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(forward-line)) ; signatures according to RFC2440.
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(when (looking-at "[\t ]*$")
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(forward-line))
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(delete-region (point-min) (point))
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(if (re-search-forward mm-uu-pgp-beginning-signature nil t)
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(delete-region (match-beginning 0) (point-max)))
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(goto-char (point-min))
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(while (re-search-forward "^- " nil t)
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(replace-match "" t t)
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(forward-line 1)))
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(list (mm-make-handle buf mm-uu-text-plain-type))))
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(defun mm-uu-pgp-signed-extract ()
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(let ((mm-security-handle (list (format "multipart/signed"))))
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(mm-set-handle-multipart-parameter
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mm-security-handle 'protocol "application/x-gnus-pgp-signature")
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(save-restriction
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(narrow-to-region start-point end-point)
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(add-text-properties 0 (length (car mm-security-handle))
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(list 'buffer (mm-uu-copy-to-buffer))
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(car mm-security-handle))
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(setcdr mm-security-handle
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(mm-uu-pgp-signed-extract-1 nil
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mm-security-handle)))
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mm-security-handle))
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(defun mm-uu-pgp-encrypted-test (&rest rest)
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(and
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mml2015-use
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(mml2015-clear-decrypt-function)
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(cond
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((eq mm-decrypt-option 'never) nil)
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((eq mm-decrypt-option 'always) t)
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((eq mm-decrypt-option 'known) t)
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(t (prog1
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(y-or-n-p "Decrypt pgp encrypted part? ")
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(message ""))))))
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(defun mm-uu-pgp-encrypted-extract-1 (handles ctl)
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(let ((buf (mm-uu-copy-to-buffer (point-min) (point-max)))
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(first t)
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charset)
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;; Make sure there's a blank line between header and body.
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(with-current-buffer buf
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(goto-char (point-min))
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(while (prog2
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(forward-line 1)
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(if first
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(looking-at "[^\t\n ]+:")
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(looking-at "[^\t\n ]+:\\|[\t ]"))
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(setq first nil)))
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(unless (memq (char-after) '(?\n nil))
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(insert "\n"))
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(save-restriction
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(narrow-to-region (point-min) (point))
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(setq charset (mail-fetch-field "charset")))
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(if (and (mm-uu-pgp-encrypted-test)
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(progn
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(mml2015-clean-buffer)
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(funcall (mml2015-clear-decrypt-function))
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(equal (mm-handle-multipart-ctl-parameter mm-security-handle
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'gnus-info)
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"OK")))
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(progn
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;; Decode charset.
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(if (and (or charset
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(setq charset gnus-newsgroup-charset))
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(setq charset (mm-charset-to-coding-system charset))
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(not (eq charset 'ascii)))
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;; Assume that buffer's multibyteness is turned off.
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;; See `mml2015-pgg-clear-decrypt'.
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(insert (mm-decode-coding-string (prog1
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(buffer-string)
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(erase-buffer)
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(mm-enable-multibyte))
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charset))
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(mm-enable-multibyte))
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(list (mm-make-handle buf mm-uu-text-plain-type)))
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(list (mm-make-handle buf '("application/pgp-encrypted")))))))
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(defun mm-uu-pgp-encrypted-extract ()
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|
(let ((mm-security-handle (list (format "multipart/encrypted"))))
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|
(mm-set-handle-multipart-parameter
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|
mm-security-handle 'protocol "application/x-gnus-pgp-encrypted")
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|
(save-restriction
|
|
(narrow-to-region start-point end-point)
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|
(add-text-properties 0 (length (car mm-security-handle))
|
|
(list 'buffer (mm-uu-copy-to-buffer))
|
|
(car mm-security-handle))
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|
(setcdr mm-security-handle
|
|
(mm-uu-pgp-encrypted-extract-1 nil
|
|
mm-security-handle)))
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|
mm-security-handle))
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|
|
|
(defun mm-uu-gpg-key-skip-to-last ()
|
|
(let ((point (point))
|
|
(end-regexp (mm-uu-end-regexp entry))
|
|
(beginning-regexp (mm-uu-beginning-regexp entry)))
|
|
(when (and end-regexp
|
|
(not (mm-uu-configure-p (mm-uu-type entry) 'disabled)))
|
|
(while (re-search-forward end-regexp nil t)
|
|
(skip-chars-forward " \t\n\r")
|
|
(if (looking-at beginning-regexp)
|
|
(setq point (match-end 0)))))
|
|
(goto-char point)))
|
|
|
|
(defun mm-uu-pgp-key-extract ()
|
|
(let ((buf (mm-uu-copy-to-buffer start-point end-point)))
|
|
(mm-make-handle buf
|
|
'("application/pgp-keys"))))
|
|
|
|
;;;###autoload
|
|
(defun mm-uu-dissect (&optional noheader mime-type)
|
|
"Dissect the current buffer and return a list of uu handles.
|
|
The optional NOHEADER means there's no header in the buffer.
|
|
MIME-TYPE specifies a MIME type and parameters, which defaults to the
|
|
value of `mm-uu-text-plain-type'."
|
|
(let ((case-fold-search t)
|
|
(mm-uu-text-plain-type (or mime-type mm-uu-text-plain-type))
|
|
text-start start-point end-point file-name result entry func)
|
|
(save-excursion
|
|
(goto-char (point-min))
|
|
(cond
|
|
(noheader)
|
|
((looking-at "\n")
|
|
(forward-line))
|
|
((search-forward "\n\n" nil t)
|
|
t)
|
|
(t (goto-char (point-max))))
|
|
(setq text-start (point))
|
|
(while (re-search-forward mm-uu-beginning-regexp nil t)
|
|
(setq start-point (match-beginning 0)
|
|
entry nil)
|
|
(let ((alist mm-uu-type-alist)
|
|
(beginning-regexp (match-string 0)))
|
|
(while (not entry)
|
|
(if (string-match (mm-uu-beginning-regexp (car alist))
|
|
beginning-regexp)
|
|
(setq entry (car alist))
|
|
(pop alist))))
|
|
(if (setq func (mm-uu-function-1 entry))
|
|
(funcall func))
|
|
(forward-line);; in case of failure
|
|
(when (and (not (mm-uu-configure-p (mm-uu-type entry) 'disabled))
|
|
(let ((end-regexp (mm-uu-end-regexp entry)))
|
|
(if (not end-regexp)
|
|
(or (setq end-point (point-max)) t)
|
|
(prog1
|
|
(re-search-forward end-regexp nil t)
|
|
(forward-line)
|
|
(setq end-point (point)))))
|
|
(or (not (setq func (mm-uu-function-2 entry)))
|
|
(funcall func)))
|
|
(if (and (> start-point text-start)
|
|
(progn
|
|
(goto-char text-start)
|
|
(re-search-forward "." start-point t)))
|
|
(push
|
|
(mm-make-handle (mm-uu-copy-to-buffer text-start start-point)
|
|
mm-uu-text-plain-type)
|
|
result))
|
|
(push
|
|
(funcall (mm-uu-function-extract entry))
|
|
result)
|
|
(goto-char (setq text-start end-point))))
|
|
(when result
|
|
(if (and (> (point-max) (1+ text-start))
|
|
(save-excursion
|
|
(goto-char text-start)
|
|
(re-search-forward "." nil t)))
|
|
(push
|
|
(mm-make-handle (mm-uu-copy-to-buffer text-start (point-max))
|
|
mm-uu-text-plain-type)
|
|
result))
|
|
(setq result (cons "multipart/mixed" (nreverse result))))
|
|
result)))
|
|
|
|
;;;###autoload
|
|
(defun mm-uu-dissect-text-parts (handle &optional decoded)
|
|
"Dissect text parts and put uu handles into HANDLE.
|
|
Assume text has been decoded if DECODED is non-nil."
|
|
(let ((buffer (mm-handle-buffer handle)))
|
|
(cond ((stringp buffer)
|
|
(dolist (elem (cdr handle))
|
|
(mm-uu-dissect-text-parts elem decoded)))
|
|
((bufferp buffer)
|
|
(let ((type (mm-handle-media-type handle))
|
|
(case-fold-search t) ;; string-match
|
|
children charset encoding)
|
|
(when (and
|
|
(stringp type)
|
|
;; Mutt still uses application/pgp even though
|
|
;; it has already been withdrawn.
|
|
(string-match "\\`text/\\|\\`application/pgp\\'" type)
|
|
(setq
|
|
children
|
|
(with-current-buffer buffer
|
|
(cond
|
|
((or decoded
|
|
(eq (setq charset (mail-content-type-get
|
|
(mm-handle-type handle)
|
|
'charset))
|
|
'gnus-decoded))
|
|
(setq decoded t)
|
|
(mm-uu-dissect
|
|
t (cons type '((charset . gnus-decoded)))))
|
|
(charset
|
|
(setq decoded t)
|
|
(mm-with-multibyte-buffer
|
|
(insert (mm-decode-string (mm-get-part handle)
|
|
charset))
|
|
(mm-uu-dissect
|
|
t (cons type '((charset . gnus-decoded))))))
|
|
((setq encoding (mm-handle-encoding handle))
|
|
(setq decoded nil)
|
|
;; Inherit the multibyteness of the `buffer'.
|
|
(with-temp-buffer
|
|
(insert-buffer-substring buffer)
|
|
(mm-decode-content-transfer-encoding
|
|
encoding type)
|
|
(mm-uu-dissect t (list type))))
|
|
(t
|
|
(setq decoded nil)
|
|
(mm-uu-dissect t (list type)))))))
|
|
;; Ignore it if a given part is dissected into a single
|
|
;; part of which the type is the same as the given one.
|
|
(if (and (<= (length children) 2)
|
|
(string-equal (mm-handle-media-type (cadr children))
|
|
type))
|
|
(kill-buffer (mm-handle-buffer (cadr children)))
|
|
(kill-buffer buffer)
|
|
(setcdr handle (cdr children))
|
|
(setcar handle (car children)) ;; "multipart/mixed"
|
|
(dolist (elem (cdr children))
|
|
(mm-uu-dissect-text-parts elem decoded))))))
|
|
(t
|
|
(dolist (elem handle)
|
|
(mm-uu-dissect-text-parts elem decoded))))))
|
|
|
|
(provide 'mm-uu)
|
|
|
|
;; arch-tag: 7db076bf-53db-4320-aa19-ca76a1d2ab2c
|
|
;;; mm-uu.el ends here
|