Exchange mutilation of multipart/encrypted

2014-12-02 Thread Brian Sniffen
My employer uses an Exchange server in place of an MTA.  It mutilates
multipart/encrypted messages, so that when I receive a PGP/MIME message
the Emacs-notmuch interface shows me:

[ multipart/mixed ]
[ text/plain ]
[ ATT2: application/pgp-encrypted ]
[ msg.asc: application/octet-stream ]

When I used Gnus heavily, I wrote a little program to un-mutilate
PGP/MIME mail:

~~~
(defun repair-multipart-encrypted (article)
  Switch a multipart/mixed header to multipart/encrypted.
This helps cope with broken Exchange servers.
  (interactive (list (gnus-summary-article-number)))
  (gnus-with-article article
(message-narrow-to-head)
(goto-char (point-min))
(search-forward Content-Type)
(search-forward mixed)
(replace-match encrypted; protocol=\application/pgp-encrypted\ t t)
(widen))
  (let (gnus-mark-article-hook)
(gnus-summary-select-article t t nil article)))
~~~

I'd love to have a way to tell Emacs-notmuch to treat a part as of a
different type, and provide parameters.  Alternately, I'd be happy to
edit the file on disk and have it re-indexed---but that seems likely to
cause me regret.  Any advice?  I see
`notmuch-show-insert-bodypart-internal` and expect to call that
with a forced content-type.

Thanks,
Brian

-- 
Brian Sniffen
I reserve the right to evolve my views, and state that views I previously
 expressed may have been somehere along the spectrum from insufficiently
 nuanced through ill-informed to dead wrong.
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Exchange mutilation of multipart/encrypted

2014-12-01 Thread Brian Sniffen
My employer uses an Exchange server in place of an MTA.  It mutilates
multipart/encrypted messages, so that when I receive a PGP/MIME message
the Emacs-notmuch interface shows me:

[ multipart/mixed ]
[ text/plain ]
[ ATT2: application/pgp-encrypted ]
[ msg.asc: application/octet-stream ]

When I used Gnus heavily, I wrote a little program to un-mutilate
PGP/MIME mail:

~~~
(defun repair-multipart-encrypted (article)
  "Switch a multipart/mixed header to multipart/encrypted.
This helps cope with broken Exchange servers."
  (interactive (list (gnus-summary-article-number)))
  (gnus-with-article article
(message-narrow-to-head)
(goto-char (point-min))
(search-forward "Content-Type")
(search-forward "mixed")
(replace-match "encrypted; protocol=\"application/pgp-encrypted\"" t t)
(widen))
  (let (gnus-mark-article-hook)
(gnus-summary-select-article t t nil article)))
~~~

I'd love to have a way to tell Emacs-notmuch to treat a part as of a
different type, and provide parameters.  Alternately, I'd be happy to
edit the file on disk and have it re-indexed---but that seems likely to
cause me regret.  Any advice?  I see
`notmuch-show-insert-bodypart-internal` and expect to call that
with a forced content-type.

Thanks,
Brian

-- 
Brian Sniffen
"I reserve the right to evolve my views, and state that views I previously
 expressed may have been somehere along the spectrum from insufficiently
 nuanced through ill-informed to dead wrong."