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bug#7797: Configure the use of from header for epg signing.


From: Daniel Dehennin
Subject: bug#7797: Configure the use of from header for epg signing.
Date: Fri, 07 Jan 2011 18:29:01 +0100
User-agent: Gnus/5.110011 (No Gnus v0.11) Emacs/24.0.50 (gnu/linux)

Here is a patch to make the use of from header conditional, this solve
issue 1 in [1].

It can be fetched from my Gnus git repository [2].

I do not update the Changelog to avoid conflict, I think changelog can
be automatically handled by hook when Lars pull in its branch ;-)

This patch is tested by me.

Regards.

* lisp/mml2015.el (mml2015-use-from-address): New variable for optional
  from header use.
  (mml2015-epg-sign): Use it.
  (mml2015-epg-encrypt): Ditto.
---
 lisp/mml2015.el |   12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/lisp/mml2015.el b/lisp/mml2015.el
index 9831b33..dde8a08 100644
--- a/lisp/mml2015.el
+++ b/lisp/mml2015.el
@@ -121,6 +121,12 @@ Whether the passphrase is cached at all is controlled by
   :group 'mime-security
   :type '(repeat (string :tag "Key ID")))
 
+(defcustom mml2015-use-from-address nil
+  "If t, use from header mail address before mml2015-signers when
+signing."
+  :group 'mime-security
+  :type 'boolean)
+
 (defcustom mml2015-encrypt-to-self nil
   "If t, add your own key ID to recipient list when encryption."
   :group 'mime-security
@@ -960,7 +966,8 @@ Whether the passphrase is cached at all is controlled by
   (let* ((inhibit-redisplay t)
         (context (epg-make-context))
         (boundary (mml-compute-boundary cont))
-        (sender (message-options-get 'message-sender))
+        (sender (if mml2015-use-from-address
+                    (message-options-get 'message-sender)))
         signer-key
         (signers
          (or (message-options-get 'mml2015-epg-signers)
@@ -1035,7 +1042,8 @@ If no one is selected, default secret key is used.  "
   (let ((inhibit-redisplay t)
        (context (epg-make-context))
        (config (epg-configuration))
-       (sender (message-options-get 'message-sender))
+        (sender (if mml2015-use-from-address
+                    (message-options-get 'message-sender)))
        (recipients (message-options-get 'mml2015-epg-recipients))
        cipher signers
        (boundary (mml-compute-boundary cont))
-- 
1.7.2.3



Footnotes: 
[1]  http://lists.gnu.org/archive/html/bug-gnu-emacs/2011-01/msg00207.html

[2]  http://www.baby-gnu.org/~nebu/archives/gnus/gnus.git/ 
dad/mml2015-epg-use-from-to-sign-if-configured

-- 
Daniel Dehennin
Récupérer ma clef GPG:
gpg --keyserver pgp.mit.edu --recv-keys 0x6A2540D1

Attachment: pgpipFwL4QKqX.pgp
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