Convert consecutive FSF copyright years to ranges.
[gnus] / lisp / pgg-gpg.el
index a9608b7..064985f 100644 (file)
@@ -1,19 +1,21 @@
 ;;; pgg-gpg.el --- GnuPG support for PGG.
 
-;; Copyright (C) 1999, 2000, 2002, 2003, 2004,
-;;   2005, 2006 Free Software Foundation, Inc.
+;; Copyright (C) 1999-2000, 2002-2011 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
+;; Package: pgg
+;; Obsolete-since: 24.1
 
 ;; This file is part of GNU Emacs.
 
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; 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)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
 
 ;; GNU Emacs is distributed in the hope that it will be useful,
 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -21,9 +23,7 @@
 ;; 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., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
 
 ;;; Code:
 
   :type '(choice (const :tag "New `--recipient' option" "--recipient")
                 (const :tag "Old `--remote-user' option" "--remote-user")))
 
-(defcustom pgg-gpg-use-agent (if (getenv "GPG_AGENT_INFO") t nil)
-  "Whether to use gnupg agent for key caching.
-By default, it will be enabled iff the environment variable
-\"GPG_AGENT_INFO\" is set."
+(defcustom pgg-gpg-use-agent t
+  "Whether to use gnupg agent for key caching."
   :group 'pgg-gpg
   :type 'boolean)
 
@@ -62,10 +60,11 @@ By default, it will be enabled iff the environment variable
   "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 pgg-gpg-use-agent '("--use-agent")
+           ,@(if use-agent '("--use-agent")
                (if passphrase '("--passphrase-fd" "0")))
            "--yes" ; overwrite
            "--output" ,output-file-name
@@ -74,23 +73,44 @@ By default, it will be enabled iff the environment variable
         (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))
+         ;; Accept any remaining pending output coming after the
+         ;; status change.
+         (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)
@@ -100,9 +120,16 @@ By default, it will be enabled iff the environment variable
                                                '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))))
@@ -163,9 +190,9 @@ Optional ALL non-nil means search all keys, including secret keys."
   (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\\|uid\\)"
                            ":[^:]*:[^:]*:[^:]*:\\([^:]*\\):[^:]*"
-                           ":[^:]*:[^:]*:[^:]*:\\([^:]*\\):")))
+                           ":[^:]*:[^:]*:[^:]*:\\([^:]+\\):")))
     (with-temp-buffer
       (apply #'call-process pgg-gpg-program nil t nil args)
       (goto-char (point-min))
@@ -189,7 +216,7 @@ If optional PASSPHRASE is not specified, it will be obtained from the
 passphrase cache or user."
   (let* ((pgg-gpg-user-id (or pgg-gpg-user-id pgg-default-user-id))
         (passphrase (or passphrase
-                        (when (and sign (not pgg-gpg-use-agent))
+                        (when (and sign (not (pgg-gpg-use-agent-p)))
                           (pgg-read-passphrase
                            (format "GnuPG passphrase for %s: "
                                    pgg-gpg-user-id)
@@ -199,7 +226,7 @@ passphrase cache or user."
           (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))
@@ -221,7 +248,7 @@ passphrase cache or user."
 If optional PASSPHRASE is not specified, it will be obtained from the
 passphrase cache or user."
   (let* ((passphrase (or passphrase
-                        (when (not pgg-gpg-use-agent)
+                        (when (not (pgg-gpg-use-agent-p))
                           (pgg-read-passphrase
                            "GnuPG passphrase for symmetric encryption: "))))
         (args
@@ -250,7 +277,7 @@ passphrase cache or user."
         (pgg-gpg-user-id (or key-id key
                              pgg-gpg-user-id pgg-default-user-id))
         (passphrase (or passphrase
-                        (when (not pgg-gpg-use-agent)
+                        (when (not (pgg-gpg-use-agent-p))
                           (pgg-read-passphrase
                            (format (if (pgg-gpg-symmetric-key-p message-keys)
                                        "Passphrase for symmetric decryption: "
@@ -286,7 +313,7 @@ passphrase cache or user."
   "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
-                        (when (not pgg-gpg-use-agent)
+                        (when (not (pgg-gpg-use-agent-p))
                           (pgg-read-passphrase
                            (format "GnuPG passphrase for %s: "
                                    pgg-gpg-user-id)
@@ -356,7 +383,28 @@ passphrase cache or user."
     (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
 ;;; pgg-gpg.el ends here