* shr.el: Expand TD elements to fill available space.

[gnus] / lisp / tls.el

diff --git a/lisp/tls.el b/lisp/tls.el
index 4cdc00c..daa1c18 100644 (file)
--- a/lisp/tls.el
+++ b/lisp/tls.el
@@ -1,27 +1,25 @@
 ;;; tls.el --- TLS/SSL support via wrapper around GnuTLS
 
-;; Copyright (C) 1996, 1997, 1998, 1999, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+;; Copyright (C) 1996, 1997, 1998, 1999, 2002, 2003, 2004, 2005, 2006,
+;;   2007, 2008, 2009, 2010  Free Software Foundation, Inc.
 
 ;; Author: Simon Josefsson <simon@josefsson.org>
 ;; Keywords: comm, tls, gnutls, ssl
 
 ;; 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 3, 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
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.         See the
+;; 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., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
@@ -47,9 +45,8 @@
 
 ;;; Code:
 
-(eval-and-compile
-  (autoload 'format-spec "format-spec")
-  (autoload 'format-spec-make "format-spec"))
+(autoload 'format-spec "format-spec")
+(autoload 'format-spec-make "format-spec")
 
 (defgroup tls nil
   "Transport Layer Security (TLS) parameters."
@@ -78,9 +75,13 @@ and `gnutls-cli' (version 2.0.1) output."
   :type 'regexp
   :group 'tls)
 
-(defcustom tls-program '("gnutls-cli -p %p %h"
-                        "gnutls-cli -p %p %h --protocols ssl3"
-                        "openssl s_client -connect %h:%p -no_ssl2 -ign_eof")
+(defvar tls-starttls-switches
+  '(("openssl" "-starttls imap"))
+  "Alist of programs and the switches necessary to get starttls behaviour.")
+
+(defcustom tls-program '("gnutls-cli --insecure -p %p %h"
+                        "gnutls-cli --insecure -p %p %h --protocols ssl3"
+                        "openssl s_client %s -connect %h:%p -no_ssl2 -ign_eof")
   "List of strings containing commands to start TLS stream to a host.
 Each entry in the list is tried until a connection is successful.
 %h is replaced with server hostname, %p with port to connect to.
@@ -202,7 +203,7 @@ Used by `tls-certificate-information'."
            (push (cons (match-string 1) (match-string 2)) vals))
          (nreverse vals))))))
 
-(defun open-tls-stream (name buffer host port)
+(defun open-tls-stream (name buffer host port &optional starttlsp)
   "Open a TLS connection for a port to a host.
 Returns a subprocess-object to represent the connection.
 Input and output work as for subprocesses; `delete-process' closes it.
@@ -219,22 +220,35 @@ Fourth arg PORT is an integer specifying a port to connect to."
        (use-temp-buffer (null buffer))
        process cmd done)
     (if use-temp-buffer
-       (setq buffer (generate-new-buffer " TLS")))
+       (setq buffer (generate-new-buffer " TLS"))
+      ;; BUFFER is a string but does not exist as a buffer object.
+      (unless (and (get-buffer buffer)
+                  (buffer-name (get-buffer buffer)))
+       (generate-new-buffer buffer)))
     (with-current-buffer buffer
       (message "Opening TLS connection to `%s'..." host)
       (while (and (not done) (setq cmd (pop cmds)))
-       (message "Opening TLS connection with `%s'..." cmd)
        (let ((process-connection-type tls-process-connection-type)
+             (formatted-cmd
+              (format-spec
+               cmd
+               (format-spec-make
+                ?s (if starttlsp
+                       (tls-find-starttls-argument cmd)
+                     "")
+                ?h host
+                ?p (if (integerp port)
+                       (int-to-string port)
+                     port))))
              response)
+         (message "Opening TLS connection with `%s'..." formatted-cmd)
          (setq process (start-process
                         name buffer shell-file-name shell-command-switch
-                        (format-spec
-                         cmd
-                         (format-spec-make
-                          ?h host
-                          ?p (if (integerp port)
-                                 (int-to-string port)
-                               port)))))
+                        formatted-cmd))
+         (funcall (if (fboundp 'set-process-query-on-exit-flag)
+                      'set-process-query-on-exit-flag
+                    'process-kill-without-query)
+                  process nil)
          (while (and process
                      (memq (process-status process) '(open run))
                      (progn
@@ -243,7 +257,7 @@ Fourth arg PORT is an integer specifying a port to connect to."
                                         tls-success nil t)))))
            (unless (accept-process-output process 1)
              (sit-for 1)))
-         (message "Opening TLS connection with `%s'...%s" cmd
+         (message "Opening TLS connection with `%s'...%s" formatted-cmd
                   (if done "done" "failed"))
          (if (not done)
              (delete-process process)
@@ -293,7 +307,11 @@ match `%s'. Connect anyway? " host))))))
       (kill-buffer buffer))
     done))
 
+(defun tls-find-starttls-argument (command)
+  (let ((command (car (split-string command))))
+    (or (cadr (assoc command tls-starttls-switches))
+       "")))
+
 (provide 'tls)
 
-;; arch-tag: 5596d1c4-facc-4bc4-94a9-9863b928d7ac
 ;;; tls.el ends here