Re: [PATCH] Fix mml-quoting in responses where pgp-signing is enabled
Tim Bielawa
tbielawa at redhat.com
Sat Mar 3 15:54:55 PST 2012
Great point, I considered that too after I authored the original patch. It's a better approach I think. I'll try and give it a test run later tonight.
-----Original Message-----
From: Jani Nikula [jani at nikula.org]
Received: Saturday, 03 Mar 2012, 6:36pm
To: Tim Bielawa [tbielawa at redhat.com]; notmuch at notmuchmail.org
Subject: Re: [PATCH] Fix mml-quoting in responses where pgp-signing is enabled
On Sat, 3 Mar 2012 17:04:22 -0500, Tim Bielawa <tbielawa at redhat.com> wrote:
> The addition of mml-quote-region (notmuch-mua.el) in 2c6710e3 breaks
> automatic signing in replies. When replies are mml-quoted and signing
> is enabled by default the "<#part sign=pgpmime>" string will appear on
> line 1. This will be consumed during the application of the
> mml-quote-region function and transform into the inert string
> "<#!part sign=pgpmime>". The result is that responses will no longer
> be signed by default.
>
> This fix moves the point forward one line before applying the quoting
> function.
>
> Consideration: Clients not signing mail by default. The first line of
> their responses would be skipped when the quoting function is
> applied. This string takes this general form:
>
> On Sat, 03 Mar 2012 12:55:14 -0800, notmuch-request at notmuchmail.org wrote:
>
> Because the string is generated by notmuch I don't believe this fix
> introduces the possibility for malicious mml commands being omitted
> from the quoting.
Hmm, would it work to mml quote the reply *before* extracting it from
the temp buffer, like below? It would handle not mml quoting the user's
signature too. Completely untested...
BR,
Jani.
diff --git a/emacs/notmuch-mua.el b/emacs/notmuch-mua.el
index 4be7c13..13244eb 100644
--- a/emacs/notmuch-mua.el
+++ b/emacs/notmuch-mua.el
@@ -95,6 +95,9 @@ list."
(goto-char (point-min))
(setq headers (mail-header-extract)))))
(forward-line 1)
+ ;; Original message may contain (malicious) MML tags. We must
+ ;; properly quote them in the reply.
+ (mml-quote-region (point) (point-max))
(setq body (buffer-substring (point) (point-max))))
;; If sender is non-nil, set the From: header to its value.
(when sender
@@ -116,12 +119,7 @@ list."
(push-mark))
(set-buffer-modified-p nil)
- (message-goto-body)
- ;; Original message may contain (malicious) MML tags. We must
- ;; properly quote them in the reply. Note that using `point-max'
- ;; instead of `mark' here is wrong. The buffer may include user's
- ;; signature which should not be MML-quoted.
- (mml-quote-region (point) (mark)))
+ (message-goto-body))
(defun notmuch-mua-forward-message ()
(message-forward)
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