;;; pgg-gpg.el --- GnuPG support for PGG.
;; Copyright (C) 1999, 2000, 2002, 2003, 2004,
-;; 2005 Free Software Foundation, Inc.
+;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
;; Author: Daiki Ueno <ueno@unixuser.org>
-;; Symmetric encryption added by: Sascha Wilde <wilde@sha-bang.de>
+;; Symmetric encryption and gpg-agent support added by:
+;; Sascha Wilde <wilde@sha-bang.de>
;; Created: 1999/10/28
;; Keywords: PGP, OpenPGP, GnuPG
;; 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)
+;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
:type '(choice (const :tag "New `--recipient' option" "--recipient")
(const :tag "Old `--remote-user' option" "--remote-user")))
+(defcustom pgg-gpg-use-agent t
+ "Whether to use gnupg agent for key caching."
+ :group 'pgg-gpg
+ :type 'boolean)
+
(defvar pgg-gpg-user-id nil
"GnuPG ID of your default identity.")
(defun pgg-gpg-process-region (start end passphrase program args)
- (let* ((output-file-name (pgg-make-temp-file "pgg-output"))
+ (let* ((use-agent (and (null passphrase) (pgg-gpg-use-agent-p)))
+ (output-file-name (pgg-make-temp-file "pgg-output"))
(args
`("--status-fd" "2"
- ,@(if passphrase '("--passphrase-fd" "0"))
+ ,@(if use-agent '("--use-agent")
+ (if passphrase '("--passphrase-fd" "0")))
"--yes" ; overwrite
"--output" ,output-file-name
,@pgg-gpg-extra-args ,@args))
(errors-buffer pgg-errors-buffer)
(orig-mode (default-file-modes))
(process-connection-type nil)
- exit-status)
+ (inhibit-redisplay t)
+ process status exit-status
+ passphrase-with-newline
+ encoded-passphrase-with-new-line)
(with-current-buffer (get-buffer-create errors-buffer)
(buffer-disable-undo)
(erase-buffer))
(unwind-protect
(progn
(set-default-file-modes 448)
- (let ((coding-system-for-write 'binary)
- (input (buffer-substring-no-properties start end))
- (default-enable-multibyte-characters nil))
- (with-temp-buffer
- (when passphrase
- (insert passphrase "\n"))
- (insert input)
- (setq exit-status
- (apply #'call-process-region (point-min) (point-max) program
- nil errors-buffer nil args))))
+ (let ((coding-system-for-write 'binary))
+ (setq process
+ (apply #'start-process "*GnuPG*" errors-buffer
+ program args)))
+ (set-process-sentinel process #'ignore)
+ (when passphrase
+ (setq passphrase-with-newline (concat passphrase "\n"))
+ (if pgg-passphrase-coding-system
+ (progn
+ (setq encoded-passphrase-with-new-line
+ (encode-coding-string
+ passphrase-with-newline
+ (coding-system-change-eol-conversion
+ pgg-passphrase-coding-system 'unix)))
+ (pgg-clear-string passphrase-with-newline))
+ (setq encoded-passphrase-with-new-line passphrase-with-newline
+ passphrase-with-newline nil))
+ (process-send-string process encoded-passphrase-with-new-line))
+ (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))
+ (let ((coding-system-for-read (if pgg-text-mode
+ 'raw-text
+ 'binary)))
(insert-file-contents output-file-name)))
(set-buffer errors-buffer)
- (if (not (equal exit-status 0))
- (insert (format "\n%s exited abnormally: '%s'\n"
- program exit-status)))))
+ (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 passphrase-with-newline
+ (pgg-clear-string passphrase-with-newline))
+ (if encoded-passphrase-with-new-line
+ (pgg-clear-string encoded-passphrase-with-new-line))
+ (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 &optional key notruncate)
- (if (and pgg-cache-passphrase
+ (if (and passphrase
+ pgg-cache-passphrase
(progn
(goto-char (point-min))
(re-search-forward "^\\[GNUPG:] \\(GOOD_PASSPHRASE\\>\\)\\|\\(SIG_CREATED\\)" nil t)))
(let ((args (list "--with-colons" "--no-greeting" "--batch"
(if all "--list-secret-keys" "--list-keys")
string))
- (key-regexp (concat "^\\(sec\\|pub\\)"
- ":[^:]*:[^:]*:[^:]*:\\([^:]*\\):[^:]*"
- ":[^:]*:[^:]*:[^:]*:\\([^:]*\\):"))
- )
+ (key-regexp (concat "^\\(sec\\|pub\\)"
+ ":[^:]*:[^:]*:[^:]*:\\([^:]*\\):[^:]*"
+ ":[^:]*:[^:]*:[^:]*:\\([^:]*\\):")))
(with-temp-buffer
(apply #'call-process pgg-gpg-program nil t nil args)
(goto-char (point-min))
(if (re-search-forward key-regexp
- nil t)
- (match-string 3)))))
+ nil t)
+ (match-string 3)))))
(defun pgg-gpg-key-id-from-key-owner (key-owner)
(cond ((not key-owner) nil)
- ;; Extract bare key id from outermost paired angle brackets, if any:
- ((string-match "[^<]*<\\(.+\\)>[^>]*" key-owner)
- (substring key-owner (match-beginning 1)(match-end 1)))
- (key-owner))
- )
+ ;; Extract bare key id from outermost paired angle brackets, if any:
+ ((string-match "[^<]*<\\(.+\\)>[^>]*" key-owner)
+ (substring key-owner (match-beginning 1)(match-end 1)))
+ (key-owner)))
(defun pgg-gpg-encrypt-region (start end recipients &optional sign passphrase)
"Encrypt the current region between START and END.
passphrase cache or user."
(let* ((pgg-gpg-user-id (or pgg-gpg-user-id pgg-default-user-id))
(passphrase (or passphrase
- (when sign
- (pgg-read-passphrase
- (format "GnuPG passphrase for %s: "
- pgg-gpg-user-id)
- pgg-gpg-user-id))))
+ (when (and sign (not (pgg-gpg-use-agent-p)))
+ (pgg-read-passphrase
+ (format "GnuPG passphrase for %s: "
+ pgg-gpg-user-id)
+ pgg-gpg-user-id))))
(args
(append
- (list "--batch" "--textmode" "--armor" "--always-trust" "--encrypt")
+ (list "--batch" "--armor" "--always-trust" "--encrypt")
+ (if pgg-text-mode (list "--textmode"))
(if sign (list "--sign" "--local-user" pgg-gpg-user-id))
- (if recipients
+ (if (or recipients pgg-encrypt-for-me)
(apply #'nconc
(mapcar (lambda (rcpt)
(list pgg-gpg-recipient-argument 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 passphrase pgg-gpg-program args))
+ (pgg-gpg-process-region start end passphrase pgg-gpg-program args)
(when sign
(with-current-buffer pgg-errors-buffer
;; Possibly cache passphrase under, e.g. "jas", for future sign.
If optional PASSPHRASE is not specified, it will be obtained from the
passphrase cache or user."
(let* ((passphrase (or passphrase
- (pgg-read-passphrase
- "GnuPG passphrase for symmetric encryption: ")))
+ (when (not (pgg-gpg-use-agent-p))
+ (pgg-read-passphrase
+ "GnuPG passphrase for symmetric encryption: "))))
(args
- (append (list "--batch" "--textmode" "--armor" "--symmetric" ))))
- (pgg-as-lbt start end 'CRLF
- (pgg-gpg-process-region start end passphrase pgg-gpg-program args))
+ (append (list "--batch" "--armor" "--symmetric" )
+ (if pgg-text-mode (list "--textmode")))))
+ (pgg-gpg-process-region start end passphrase pgg-gpg-program args)
(pgg-process-when-success)))
(defun pgg-gpg-decrypt-region (start end &optional passphrase)
(insert-buffer-substring current-buffer)
(pgg-decode-armor-region (point-min) (point-max))))
(secret-keys (pgg-gpg-lookup-all-secret-keys))
- ;; XXX the user is stuck if they need to use the passphrase for
- ;; any but the first secret key for which the message is
- ;; encrypted. ideally, we would incrementally give them a
- ;; chance with subsequent keys each time they fail with one.
+ ;; XXX the user is stuck if they need to use the passphrase for
+ ;; any but the first secret key for which the message is
+ ;; encrypted. ideally, we would incrementally give them a
+ ;; chance with subsequent keys each time they fail with one.
(key (pgg-gpg-select-matching-key message-keys secret-keys))
- (key-owner (and key (pgg-gpg-lookup-key-owner key t)))
+ (key-owner (and key (pgg-gpg-lookup-key-owner key t)))
(key-id (pgg-gpg-key-id-from-key-owner key-owner))
(pgg-gpg-user-id (or key-id key
- pgg-gpg-user-id pgg-default-user-id))
+ pgg-gpg-user-id pgg-default-user-id))
(passphrase (or passphrase
- (pgg-read-passphrase
- (format (if (pgg-gpg-symmetric-key-p message-keys)
- "Passphrase for symmetric decryption: "
- "GnuPG passphrase for %s: ")
- (or key-owner "??"))
- pgg-gpg-user-id)))
+ (when (not (pgg-gpg-use-agent-p))
+ (pgg-read-passphrase
+ (format (if (pgg-gpg-symmetric-key-p message-keys)
+ "Passphrase for symmetric decryption: "
+ "GnuPG passphrase for %s: ")
+ (or key-owner "??"))
+ pgg-gpg-user-id))))
(args '("--batch" "--decrypt")))
(pgg-gpg-process-region start end passphrase pgg-gpg-program args)
(with-current-buffer pgg-errors-buffer
(loop for message-key in message-keys
for message-key-id = (and (equal (car message-key) 1)
(cdr (assq 'key-identifier
- (cdr message-key))))
+ (cdr message-key))))
for key = (and message-key-id (pgg-lookup-key message-key-id 'encrypt))
when (and key (member key secret-keys)) return key))
"Make detached signature from text between START and END."
(let* ((pgg-gpg-user-id (or pgg-gpg-user-id pgg-default-user-id))
(passphrase (or passphrase
- (pgg-read-passphrase
- (format "GnuPG passphrase for %s: " pgg-gpg-user-id)
- pgg-gpg-user-id)))
+ (when (not (pgg-gpg-use-agent-p))
+ (pgg-read-passphrase
+ (format "GnuPG passphrase for %s: "
+ pgg-gpg-user-id)
+ pgg-gpg-user-id))))
(args
- (list (if cleartext "--clearsign" "--detach-sign")
- "--armor" "--batch" "--verbose"
- "--local-user" pgg-gpg-user-id))
+ (append (list (if cleartext "--clearsign" "--detach-sign")
+ "--armor" "--batch" "--verbose"
+ "--local-user" pgg-gpg-user-id)
+ (if pgg-text-mode (list "--textmode"))))
(inhibit-read-only t)
buffer-read-only)
- (pgg-as-lbt start end 'CRLF
- (pgg-gpg-process-region start end passphrase pgg-gpg-program args))
+ (pgg-gpg-process-region start end passphrase pgg-gpg-program args)
(with-current-buffer pgg-errors-buffer
;; Possibly cache passphrase under, e.g. "jas", for future sign.
(pgg-gpg-possibly-cache-passphrase passphrase pgg-gpg-user-id)
(append-to-buffer pgg-output-buffer (point-min)(point-max))
(pgg-process-when-success)))
+(defun pgg-gpg-update-agent ()
+ "Try to connet to gpg-agent and send UPDATESTARTUPTTY."
+ (if (fboundp 'make-network-process)
+ (let* ((agent-info (getenv "GPG_AGENT_INFO"))
+ (socket (and agent-info
+ (string-match "^\\([^:]*\\)" agent-info)
+ (match-string 1 agent-info)))
+ (conn (and socket
+ (make-network-process :name "gpg-agent-process"
+ :host 'local :family 'local
+ :service socket))))
+ (when (and conn (eq (process-status conn) 'open))
+ (process-send-string conn "UPDATESTARTUPTTY\n")
+ (delete-process conn)
+ t))
+ ;; We can't check, so assume gpg-agent is up.
+ t))
+
+(defun pgg-gpg-use-agent-p ()
+ "Return t if `pgg-gpg-use-agent' is t and gpg-agent is available."
+ (and pgg-gpg-use-agent (pgg-gpg-update-agent)))
+
(provide 'pgg-gpg)
;;; arch-tag: 2aa5d5d8-93a0-4865-9312-33e29830e000
HCoop / bpt / emacs.git / blobdiff