Re: Problem with Mozilla Thunderbird PGP mails

[Jesper Harder <harder@ifa.au.dk>]

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Steve Youngs <sryoungs@bigpond.net.au> writes:

> * Jesper Harder <harder@ifa.au.dk> writes:
>
>   > Steve Youngs <sryoungs@bigpond.net.au> writes:
>   >> I've noticed that if someone sends me a cleartext PGP signed (ie
>   >> non-MIME) message from Mozilla Thunderbird, Gnus does not recognise it
>   >> as being signed.
>   >> 
>   >> Has anyone else seen this?  Or know what the problem is?
>
>   > They are probably format=flowed.
>
> So what can we do about it?

Hit the Thunderbird developers with a cluestick?  Using cleartext pgp
in a MIME message that is more complicated than

  Content-Type: text/plain
  Content-Transfer-Encoding: 7bit

is fundamentally broken.

Seriously, to accomodate inapproriate use of inline pgp we have to
look for magic strings inside MIME multiparts (and format=flowed
parts).

For example here's a patch that "fixes" it for format=flowed (it's not
a proper solution -- it just disables f=f treatment completely).


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*** /home/harder/gnus/lisp/mm-decode.el	Wed Mar 10 12:56:07 2004
--- /home/harder/cvsgnus/lisp/mm-decode.el	Tue Mar 16 03:35:35 2004
***************
*** 578,586 ****
  
  (defun mm-dissect-singlepart (ctl cte &optional force cdl description id)
    (when (or force
! 	    (if (equal "text/plain" (car ctl))
! 		(assoc 'format ctl)
! 	      t))
      (mm-make-handle
       (mm-copy-to-buffer) ctl cte nil cdl description nil id)))
  
--- 578,584 ----
  
  (defun mm-dissect-singlepart (ctl cte &optional force cdl description id)
    (when (or force
! 	    (not (equal "text/plain" (car ctl))))
      (mm-make-handle
       (mm-copy-to-buffer) ctl cte nil cdl description nil id)))