From dfd963cef4322e12e90f7c39f7978da610e83d0d Mon Sep 17 00:00:00 2001
From: okada <okada>
Date: Wed, 10 May 2000 05:54:32 +0000
Subject: [PATCH] 	* elmo-utils.el (elmo-get-passwd): Set timeout of
 password. 	(elmo-remove-passwd): Fill password with 0
 before erase. 	* elmo-vars.el (elmo-passwd-life-time): New
 variable.

---
 doc/wl-ja.texi    |    7 +++++++
 elmo/ChangeLog    |    6 ++++++
 elmo/elmo-util.el |   14 ++++++++++----
 elmo/elmo-vars.el |    2 ++
 4 files changed, 25 insertions(+), 4 deletions(-)

diff --git a/doc/wl-ja.texi b/doc/wl-ja.texi
index 4b64e0c..781f7be 100644
--- a/doc/wl-ja.texi
+++ b/doc/wl-ja.texi
@@ -5857,6 +5857,13 @@ Non-nil ならば dbm を使って Message-ID の管理を行ないます。
 コマンド @code{elmo-passwd-alist-save} を実行するとこのファイルに現在設定
 されているパスワードがセーブされます。
 
+@item elmo-passwd-life-time
+@vindex  elmo-passwd-life-time
+初期設定は nil。
+Non-nil な値が設定された場合は、新規にパスワードが入力されてから
+@code{elmo-passwd-life-time} 秒後にパスワードを消去するタイマが、
+セットされます。
+
 @item elmo-nntp-list-folders-use-cache
 @vindex elmo-nntp-list-folders-use-cache
 初期設定は 600 (秒)。
diff --git a/elmo/ChangeLog b/elmo/ChangeLog
index 855f838..75f711b 100644
--- a/elmo/ChangeLog
+++ b/elmo/ChangeLog
@@ -1,3 +1,9 @@
+2000-05-10  Kenichi OKADA <okada@opaopa.org>
+
+	* elmo-utils.el (elmo-get-passwd): Set timeout of password.
+	(elmo-remove-passwd): Fill password with 0 before erase.
+	* elmo-vars.el (elmo-passwd-life-time): New variable.
+
 2000-05-10  Yuuichi Teranishi  <teranisi@gohome.org>
 
 	* elmo-cache.el (elmo-buffer-cache-add):
diff --git a/elmo/elmo-util.el b/elmo/elmo-util.el
index 9c6de8c..923d479 100644
--- a/elmo/elmo-util.el
+++ b/elmo/elmo-util.el
@@ -770,14 +770,20 @@ File content is encoded with MIME-CHARSET."
 	    (append elmo-passwd-alist
 		    (list (cons user-at-host 
 				(elmo-base64-encode-string pass)))))
+      (if elmo-passwd-life-time
+	  (run-with-timer elmo-passwd-life-time nil
+			  `(lambda () (elmo-remove-passwd ,user-at-host))))
       pass)))
 
 (defun elmo-remove-passwd (user-at-host)
   "Remove password from password pool (for failure)."
-  (setq elmo-passwd-alist
-	(delete (assoc user-at-host elmo-passwd-alist)
-		elmo-passwd-alist
-		)))
+  (let (pass-cons)
+    (if (setq pass-cons (assoc user-at-host elmo-passwd-alist))
+	(progn
+	  (unwind-protect
+	      (fillarray (cdr pass-cons) 0))
+	  (setq elmo-passwd-alist
+		(delete pass-cons elmo-passwd-alist))))))
 
 (defmacro elmo-read-char-exclusive ()
   (cond ((featurep 'xemacs)
diff --git a/elmo/elmo-vars.el b/elmo/elmo-vars.el
index 7bf3d35..9018fa6 100644
--- a/elmo/elmo-vars.el
+++ b/elmo/elmo-vars.el
@@ -95,6 +95,8 @@ Each elements are regexp of folder name (This is obsolete).")
   "*ELMO Message Database path.")
 (defvar elmo-passwd-alist-file-name "passwd"
   "*ELMO Password filename.")
+(defvar elmo-passwd-life-time nil
+  "*ELMO Life of Password.(s)")
 (defvar elmo-warning-threshold 30000
   "*Display warning when the bytes of message exceeds this value.")
 (defvar elmo-msg-appended-hook nil
-- 
1.7.10.4