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;;; pgg-pgp.el --- PGP 2.* and 6.* support for PGG.
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;; Copyright (C) 1999,2000 Daiki Ueno
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;; Author: Daiki Ueno <ueno@ueda.info.waseda.ac.jp>
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;; Keywords: PGP, OpenPGP
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;; This file is part of SEMI (Secure Emacs MIME Interface).
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;; This program is free software; you can redistribute it and/or
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;; modify it under the terms of the GNU General Public License as
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;; published by the Free Software Foundation; either version 2, or (at
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;; your option) any later version.
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;; This program is distributed in the hope that it will be useful, but
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;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; 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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(require 'mel) ; binary-to-text-funcall, binary-write-decoded-region
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(eval-when-compile (require 'pgg))
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"PGP 2.* and 6.* interface"
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(defcustom pgg-pgp-program "pgp"
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"PGP 2.* and 6.* executable."
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(defcustom pgg-pgp-shell-file-name "/bin/sh"
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"File name to load inferior shells from.
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Bourne shell or its equivalent \(not tcsh) is needed for \"2>\"."
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(defcustom pgg-pgp-shell-command-switch "-c"
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"Switch used to have the shell execute its command line argument."
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(defcustom pgg-pgp-extra-args nil
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"Extra arguments for every PGP invocation."
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(luna-define-class pgg-scheme-pgp (pgg-scheme)))
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(defvar pgg-pgp-user-id nil
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"PGP ID of your default identity.")
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(defvar pgg-scheme-pgp-instance nil)
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(defun pgg-make-scheme-pgp ()
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(or pgg-scheme-pgp-instance
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(setq pgg-scheme-pgp-instance
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(luna-make-entity 'pgg-scheme-pgp))))
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(defun pgg-pgp-process-region (start end passphrase program args)
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(let* ((errors-file-name (make-temp-file "pgg-errors"))
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(list (concat "2>" errors-file-name))))
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(shell-file-name pgg-pgp-shell-file-name)
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(shell-command-switch pgg-pgp-shell-command-switch)
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(process-environment process-environment)
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(output-buffer pgg-output-buffer)
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(errors-buffer pgg-errors-buffer)
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(process-connection-type nil)
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process status exit-status)
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(with-current-buffer (get-buffer-create output-buffer)
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(setenv "PGPPASSFD" "0"))
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(apply #'binary-funcall
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#'start-process-shell-command "*PGP*" output-buffer
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(set-process-sentinel process #'ignore)
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(process-send-string process (concat passphrase "\n")))
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(process-send-region process start end)
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(process-send-eof process)
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(while (eq 'run (process-status process))
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(accept-process-output process 5))
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(setq status (process-status process)
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exit-status (process-exit-status process))
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(delete-process process)
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(with-current-buffer output-buffer
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(pgg-convert-lbt-region (point-min)(point-max) 'LF)
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(if (memq status '(stop signal))
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(error "%s exited abnormally: '%s'" program exit-status))
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(if (= 127 exit-status)
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(error "%s could not be found" program))
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(set-buffer (get-buffer-create errors-buffer))
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(buffer-disable-undo)
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(insert-file-contents errors-file-name)))
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(if (and process (eq 'run (process-status process)))
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(interrupt-process process))
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(delete-file errors-file-name)
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(luna-define-method pgg-scheme-lookup-key ((scheme pgg-scheme-pgp)
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string &optional type)
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(let ((args (list "+batchmode" "+language=en" "-kv" string)))
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(with-current-buffer (get-buffer-create pgg-output-buffer)
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(buffer-disable-undo)
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(apply #'call-process pgg-pgp-program nil t nil args)
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(goto-char (point-min))
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((re-search-forward "^pub\\s +[0-9]+/" nil t);PGP 2.*
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(buffer-substring (point)(+ 8 (point))))
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((re-search-forward "^Type" nil t);PGP 6.*
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(beginning-of-line 2)
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(buffer-substring (point)(progn (end-of-line) (point)))))
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(luna-define-method pgg-scheme-encrypt-region ((scheme pgg-scheme-pgp)
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start end recipients)
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(let* ((pgg-pgp-user-id (or pgg-pgp-user-id pgg-default-user-id))
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`("+encrypttoself=off +verbose=1" "+batchmode"
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"+language=us" "-fate"
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(mapcar (lambda (rcpt) (concat "\"" rcpt "\""))
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(if pgg-encrypt-for-me
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(list pgg-pgp-user-id))))))))
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(pgg-pgp-process-region start end nil pgg-pgp-program args)
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(pgg-process-when-success nil)))
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(luna-define-method pgg-scheme-decrypt-region ((scheme pgg-scheme-pgp)
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(let* ((pgg-pgp-user-id (or pgg-pgp-user-id pgg-default-user-id))
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(format "PGP passphrase for %s: " pgg-pgp-user-id)
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(pgg-scheme-lookup-key scheme pgg-pgp-user-id 'encrypt)))
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'("+verbose=1" "+batchmode" "+language=us" "-f")))
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(pgg-pgp-process-region start end passphrase pgg-pgp-program args)
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(pgg-process-when-success nil)))
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(luna-define-method pgg-scheme-sign-region ((scheme pgg-scheme-pgp)
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start end &optional clearsign)
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(let* ((pgg-pgp-user-id (or pgg-pgp-user-id pgg-default-user-id))
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(format "PGP passphrase for %s: " pgg-pgp-user-id)
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(pgg-scheme-lookup-key scheme pgg-pgp-user-id 'sign)))
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(list (if clearsign "-fast" "-fbas")
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"+verbose=1" "+language=us" "+batchmode"
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"-u" pgg-pgp-user-id)))
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(pgg-as-lbt start end 'CRLF
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(pgg-pgp-process-region start end passphrase pgg-pgp-program args))
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(pgg-process-when-success
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(goto-char (point-min))
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(when (re-search-forward "^-+BEGIN PGP" nil t);XXX
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(cdr (assq 2 (pgg-parse-armor-region
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(progn (beginning-of-line 2)
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(if pgg-cache-passphrase
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(pgg-add-passphrase-cache
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(cdr (assq 'key-identifier packet))
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(luna-define-method pgg-scheme-verify-region ((scheme pgg-scheme-pgp)
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start end &optional signature)
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(let ((orig-file (make-temp-file "pgg"))
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(args '("+verbose=1" "+batchmode" "+language=us"))
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(orig-mode (default-file-modes)))
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(set-default-file-modes 448)
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(binary-write-decoded-region start end orig-file))
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(set-default-file-modes orig-mode))
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(when (stringp signature)
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(copy-file signature (setq signature (concat orig-file ".asc")))
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(setq args (append args (list signature orig-file))))
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(pgg-pgp-process-region (point)(point) nil pgg-pgp-program args)
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(delete-file orig-file)
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(if signature (delete-file signature))
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(pgg-process-when-success
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(goto-char (point-min))
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(let ((case-fold-search t))
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(while (re-search-forward "^warning: " nil t)
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(delete-region (match-beginning 0)
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(progn (beginning-of-line 2) (point)))))
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(goto-char (point-min))
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(when (re-search-forward "^\\.$" nil t)
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(delete-region (point-min)
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(progn (beginning-of-line 2)
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(luna-define-method pgg-scheme-insert-key ((scheme pgg-scheme-pgp))
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(let* ((pgg-pgp-user-id (or pgg-pgp-user-id pgg-default-user-id))
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(list "+verbose=1" "+batchmode" "+language=us" "-kxaf"
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(concat "\"" pgg-pgp-user-id "\""))))
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(pgg-pgp-process-region (point)(point) nil pgg-pgp-program args)
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(insert-buffer-substring pgg-output-buffer)))
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(luna-define-method pgg-scheme-snarf-keys-region ((scheme pgg-scheme-pgp)
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(let* ((pgg-pgp-user-id (or pgg-pgp-user-id pgg-default-user-id))
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(key-file (make-temp-file "pgg"))
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(list "+verbose=1" "+batchmode" "+language=us" "-kaf"
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(let ((coding-system-for-write 'raw-text-dos))
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(write-region start end key-file))
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(pgg-pgp-process-region start end nil pgg-pgp-program args)
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(delete-file key-file)
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(pgg-process-when-success nil)))
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;;; pgg-pgp.el ends here
added
removed
pgg-pgp.el
