From: ueno <ueno>
Date: Mon, 17 Apr 2006 05:22:59 +0000 (+0000)
Subject: * epa-file.el (epa-passphrase): New variable.
X-Git-Tag: epgsm-branchpoint~54
X-Git-Url: http://git.chise.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3108e5ea8d6bb54dd79688a9369067b54b1af4f7;p=elisp%2Fepg.git

* epa-file.el (epa-passphrase): New variable.
(epa-file-passphrase-callback-function): New function.
(epa-find-file): Reset buffer-undo-list; set
buffer-file-coding-system to last-coding-system-used after
decoding.
---

diff --git a/ChangeLog b/ChangeLog
index 4f658ec..1a7b25c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,13 @@
 2006-04-17  Daiki Ueno  <ueno@unixuser.org>
 
+	* epa-file.el (epa-passphrase): New variable.
+	(epa-file-passphrase-callback-function): New function.
+	(epa-find-file): Reset buffer-undo-list; set
+	buffer-file-coding-system to last-coding-system-used after
+	decoding.
+
+2006-04-17  Daiki Ueno  <ueno@unixuser.org>
+
 	* epa-file.el (epa-write-file): Try to write region to "/" to get
 	last-coding-system-used to be set.
 
diff --git a/epa-file.el b/epa-file.el
index 3d3b757..202ccdf 100644
--- a/epa-file.el
+++ b/epa-file.el
@@ -35,26 +35,48 @@
   :group 'epa-file)
   
 (defvar epa-file nil)
+(defvar epa-passphrase nil)
 
+(defun epa-file-passphrase-callback-function (key-id buffer)
+  (save-excursion
+    (set-buffer buffer)
+    (if (and (eq key-id 'SYM)
+	     epa-file)
+	(or epa-passphrase
+	    (let ((passphrase (epg-passphrase-callback-function
+			       key-id buffer)))
+	      (setq epa-passphrase (copy-sequence passphrase))
+	      passphrase))
+      (epg-passphrase-callback-function key-id buffer))))
+
+(defvar last-coding-system-used)
 (defun epa-find-file ()
   (when (string-match epa-file-name-regexp (buffer-file-name))
     (when (file-exists-p (expand-file-name (buffer-file-name)))
       (if (fboundp 'set-buffer-multibyte)
 	  (set-buffer-multibyte t))
       (goto-char (point-min))
-      (insert (epg-decrypt-file (epg-make-context)
-				(expand-file-name (buffer-file-name))
-				nil))
+      (let ((context (epg-make-context)))
+	(epg-context-set-passphrase-callback
+	 context
+	 (cons #'epa-file-passphrase-callback-function
+	       (current-buffer)))
+	(insert (epg-decrypt-file context
+				  (expand-file-name (buffer-file-name))
+				  nil)))
       (delete-region (point) (point-max))
       (decode-coding-region (point-min) (point-max) 'undecided)
-      (set-buffer-modified-p nil)
+      (if (boundp 'last-coding-system-used)
+	  (set-buffer-file-coding-system last-coding-system-used))
       (set-auto-mode)
       (hack-local-variables)
-      (auto-save-mode nil))
+      (auto-save-mode nil)
+      (set-buffer-modified-p nil)
+      (setq buffer-undo-list nil))
     (make-local-variable 'epa-file)
-    (setq epa-file (buffer-file-name))))
+    (setq epa-file (buffer-file-name))
+    (make-local-variable 'epa-passphrase)))
 
-(defvar last-coding-system-used)
 (defun epa-write-file ()
   (when epa-file
     (let* ((coding-system (if (boundp 'last-coding-system-used)
@@ -62,18 +84,24 @@
 				  (write-region (point-min) (point-max) "/")
 				(error last-coding-system-used))
 			    buffer-file-coding-system))
-	   (coding-system-for-write 'binary))
+	   (coding-system-for-write 'binary)
+	   (context (epg-make-context)))
+      (epg-context-set-passphrase-callback
+       context
+       (cons #'epa-file-passphrase-callback-function
+	     (current-buffer)))
       (write-region
        (epg-encrypt-string
-	(epg-make-context)
+	context
 	(encode-coding-string (buffer-string) coding-system)
 	(mapcar (lambda (key)
-		  (epg-sub-key-id
-		   (car (epg-key-sub-key-list key))))
-		(epa-select-keys
-		 "Select recipents for encryption.
-If no one is selected, symmetric encryption will be performed.  ")))
+		  (epg-sub-key-id (car (epg-key-sub-key-list key))))
+		(unless epa-passphrase
+		  (epa-select-keys
+		   "Select recipents for encryption.
+If no one is selected, symmetric encryption will be performed.  "))))
        nil (expand-file-name (buffer-file-name))))
+    (set-visited-file-modtime)
     (set-buffer-modified-p nil)
     t))