--- /dev/null
+;;; pgg-gpg.el --- GnuPG support for PGG.
+
+;; Copyright (C) 1999,2000 Free Software Foundation, Inc.
+
+;; Author: Daiki Ueno <ueno@unixuser.org>
+;; Created: 1999/10/28
+;; Keywords: PGP, OpenPGP, GnuPG
+
+;; This file is part of SEMI (Secure Emacs MIME Interface).
+
+;; This program 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.
+
+;; This program 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 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.
+
+;;; Code:
+
+(require 'mel) ; binary-to-text-funcall
+(eval-when-compile (require 'pgg))
+
+(defgroup pgg-gpg ()
+ "GnuPG interface"
+ :group 'pgg)
+
+(defcustom pgg-gpg-program "gpg"
+ "The GnuPG executable."
+ :group 'pgg-gpg
+ :type 'string)
+
+(defcustom pgg-gpg-extra-args nil
+ "Extra arguments for every GnuPG invocation."
+ :group 'pgg-gpg
+ :type 'string)
+
+(eval-and-compile
+ (luna-define-class pgg-scheme-gpg (pgg-scheme)))
+
+(defvar pgg-gpg-user-id nil
+ "GnuPG ID of your default identity.")
+
+(defvar pgg-gpg-messages-coding-system pgg-messages-coding-system
+ "Coding system used when reading from a GnuPG external process.")
+
+(defvar pgg-scheme-gpg-instance nil)
+
+;;;###autoload
+(defun pgg-make-scheme-gpg ()
+ (or pgg-scheme-gpg-instance
+ (setq pgg-scheme-gpg-instance
+ (luna-make-entity 'pgg-scheme-gpg))))
+
+(defun pgg-gpg-process-region (start end passphrase program args)
+ (let* ((output-file-name
+ (concat temporary-file-directory (make-temp-name "pgg-output")))
+ (args
+ `("--status-fd" "2"
+ ,@(if passphrase '("--passphrase-fd" "0"))
+ "--output" ,output-file-name
+ ,@pgg-gpg-extra-args ,@args))
+ (output-buffer pgg-output-buffer)
+ (errors-buffer pgg-errors-buffer)
+ (orig-mode (default-file-modes))
+ (process-connection-type nil)
+ process status exit-status)
+ (with-current-buffer (get-buffer-create errors-buffer)
+ (buffer-disable-undo)
+ (erase-buffer))
+ (unwind-protect
+ (progn
+ (set-default-file-modes 448)
+ (setq process
+ (apply #'binary-to-text-funcall
+ pgg-gpg-messages-coding-system
+ #'start-process "*GnuPG*" errors-buffer
+ program args))
+ (set-process-sentinel process #'ignore)
+ (when passphrase
+ (process-send-string process (concat passphrase "\n")))
+ (process-send-region process start end)
+ (process-send-eof process)
+ (while (eq 'run (process-status process))
+ (accept-process-output process 5))
+ (setq status (process-status process)
+ exit-status (process-exit-status process))
+ (delete-process process)
+ (with-current-buffer (get-buffer-create output-buffer)
+ (buffer-disable-undo)
+ (erase-buffer)
+ (if (file-exists-p output-file-name)
+ (let ((coding-system-for-read 'raw-text-dos))
+ (insert-file-contents output-file-name)))
+ (set-buffer errors-buffer)
+ (if (memq status '(stop signal))
+ (error "%s exited abnormally: '%s'" program exit-status))
+ (if (= 127 exit-status)
+ (error "%s could not be found" program))))
+ (if (and process (eq 'run (process-status process)))
+ (interrupt-process process))
+ (if (file-exists-p output-file-name)
+ (delete-file output-file-name))
+ (set-default-file-modes orig-mode))))
+
+(defun pgg-gpg-possibly-cache-passphrase (passphrase)
+ (if (and pgg-cache-passphrase
+ (progn
+ (goto-char (point-min))
+ (re-search-forward "^\\[GNUPG:] GOOD_PASSPHRASE\\>" nil t)))
+ (pgg-add-passphrase-cache
+ (progn
+ (goto-char (point-min))
+ (if (re-search-forward
+ "^\\[GNUPG:] NEED_PASSPHRASE \\w+ ?\\w*" nil t)
+ (substring (match-string 0) -8)))
+ passphrase)))
+
+(luna-define-method pgg-scheme-lookup-key ((scheme pgg-scheme-gpg)
+ string &optional type)
+ (let ((args (list "--with-colons" "--no-greeting" "--batch"
+ (if type "--list-secret-keys" "--list-keys")
+ string)))
+ (with-temp-buffer
+ (apply #'call-process pgg-gpg-program nil t nil args)
+ (goto-char (point-min))
+ (if (re-search-forward "^\\(sec\\|pub\\):" nil t)
+ (substring
+ (nth 3 (split-string
+ (buffer-substring (match-end 0)
+ (progn (end-of-line)(point)))
+ ":")) 8)))))
+
+(luna-define-method pgg-scheme-encrypt-region ((scheme pgg-scheme-gpg)
+ start end recipients)
+ (let* ((pgg-gpg-user-id (or pgg-gpg-user-id pgg-default-user-id))
+ (args
+ `("--batch" "--armor" "--always-trust" "--encrypt"
+ ,@(if recipients
+ (apply #'nconc
+ (mapcar (lambda (rcpt)
+ (list "--remote-user" rcpt))
+ (append recipients
+ (if pgg-encrypt-for-me
+ (list pgg-gpg-user-id)))))))))
+ (pgg-as-lbt start end 'CRLF
+ (pgg-gpg-process-region start end nil pgg-gpg-program args))
+ (pgg-process-when-success)))
+
+(luna-define-method pgg-scheme-decrypt-region ((scheme pgg-scheme-gpg)
+ start end)
+ (let* ((pgg-gpg-user-id (or pgg-gpg-user-id pgg-default-user-id))
+ (passphrase
+ (pgg-read-passphrase
+ (format "GnuPG passphrase for %s: " pgg-gpg-user-id)
+ (pgg-scheme-lookup-key scheme pgg-gpg-user-id 'encrypt)))
+ (args '("--batch" "--decrypt")))
+ (pgg-gpg-process-region start end passphrase pgg-gpg-program args)
+ (with-current-buffer pgg-errors-buffer
+ (pgg-gpg-possibly-cache-passphrase passphrase)
+ (goto-char (point-min))
+ (re-search-forward "^\\[GNUPG:] DECRYPTION_OKAY\\>" nil t))))
+
+(luna-define-method pgg-scheme-sign-region ((scheme pgg-scheme-gpg)
+ start end &optional cleartext)
+ (let* ((pgg-gpg-user-id (or pgg-gpg-user-id pgg-default-user-id))
+ (passphrase
+ (pgg-read-passphrase
+ (format "GnuPG passphrase for %s: " pgg-gpg-user-id)
+ (pgg-scheme-lookup-key scheme pgg-gpg-user-id 'sign)))
+ (args
+ (list (if cleartext "--clearsign" "--detach-sign")
+ "--armor" "--batch" "--verbose"
+ "--local-user" pgg-gpg-user-id))
+ (inhibit-read-only t)
+ buffer-read-only)
+ (pgg-as-lbt start end 'CRLF
+ (pgg-gpg-process-region start end passphrase pgg-gpg-program args))
+ (with-current-buffer pgg-errors-buffer
+ (pgg-gpg-possibly-cache-passphrase passphrase))
+ (pgg-process-when-success)))
+
+(luna-define-method pgg-scheme-verify-region ((scheme pgg-scheme-gpg)
+ start end &optional signature)
+ (let ((args '("--batch" "--verify")))
+ (when (stringp signature)
+ (setq args (append args (list signature))))
+ (setq args (append args '("-")))
+ (pgg-gpg-process-region start end nil pgg-gpg-program args)
+ (with-current-buffer pgg-errors-buffer
+ (goto-char (point-min))
+ (while (re-search-forward "^gpg: " nil t)
+ (replace-match ""))
+ (goto-char (point-min))
+ (prog1 (re-search-forward "^\\[GNUPG:] GOODSIG\\>" nil t)
+ (goto-char (point-min))
+ (delete-matching-lines "^warning\\|\\[GNUPG:]")
+ (set-buffer pgg-output-buffer)
+ (insert-buffer-substring pgg-errors-buffer)))))
+
+(luna-define-method pgg-scheme-insert-key ((scheme pgg-scheme-gpg))
+ (let* ((pgg-gpg-user-id (or pgg-gpg-user-id pgg-default-user-id))
+ (args (list "--batch" "--export" "--armor"
+ pgg-gpg-user-id)))
+ (pgg-gpg-process-region (point)(point) nil pgg-gpg-program args)
+ (insert-buffer-substring pgg-output-buffer)))
+
+(luna-define-method pgg-scheme-snarf-keys-region ((scheme pgg-scheme-gpg)
+ start end)
+ (let ((args '("--import" "--batch" "-")) status)
+ (pgg-gpg-process-region start end nil pgg-gpg-program args)
+ (set-buffer pgg-errors-buffer)
+ (goto-char (point-min))
+ (when (re-search-forward "^\\[GNUPG:] IMPORT_RES\\>" nil t)
+ (setq status (buffer-substring (match-end 0)
+ (progn (end-of-line)(point)))
+ status (vconcat (mapcar #'string-to-int (split-string status))))
+ (erase-buffer)
+ (insert (format "Imported %d key(s).
+\tArmor contains %d key(s) [%d bad, %d old].\n"
+ (+ (aref status 2)
+ (aref status 10))
+ (aref status 0)
+ (aref status 1)
+ (+ (aref status 4)
+ (aref status 11)))
+ (if (zerop (aref status 9))
+ ""
+ "\tSecret keys are imported.\n")))
+ (append-to-buffer pgg-output-buffer (point-min)(point-max))
+ (pgg-process-when-success)))
+
+(provide 'pgg-gpg)
+
+;;; pgg-gpg.el ends here
projects / elisp / lemi.git / blobdiff