Hey Albrecht,
On 3/17/17, 4:43 PM, "Albrecht Dreß" <[email protected]> wrote:
Hi Jeff:
Am 17.03.17 19:56 schrieb(en) Jeffrey Stedfast via balsa-list:
> FWIW, 3.0 is the release for breaking API to make things better. So in
general, I’m OK with breaking it.
Great!
> Note: g_mime_stream_[file,fs]_new_for_path() have been renamed to _open()
in 3.0 and as of now also take a GError.
That's good news, and really an improvement IMO.
> In other exciting news, when GMime parses email addresses, it extracts
the charset property in the rfc2047 encoded-word token and sets that on the
InternetAddress::charset field
Hmmm.... I appears that RFC 2047 allows mixing different encodings in the
same header, there is even an example at the very end of sect. 8
("=?ISO-8859-1?Q?a?= =?ISO-8859-2?Q?_b?=" → "a b"). How do you handle this
case? Also quite weird, but IIRC I saw such mixtures in the subject (though
not in address headers) of malware spam...
There’s no great way to do this… so I grab the first charset used or UTF-8 if
that is used at all.
In your example, it would pick iso-8859-1.
It’s not perfect, but it mostly works in practice.
> GMimeParam now also has a GMimeParamEncodingMethod property which allows
you to override the default and make it use rfc2047 encoding when writing out
the headers instead of rfc2231.
Also a nice feature.
> Oh! Also… I was reading over your emails to the list and noticed that you
recently replaced the SMTP backend. One of the problems you had was hiding
various X-Balsa-* and Bcc headers?
Well, not a real problem. The old libesmtp library had options to strip
certain headers from the RFC 5321 "DATA" section. IMO this was the wrong place
as a SMTP implementation is supposed to pass the message data blob "as is"
(i.e. it also assumes proper line endings and that leading dots are escaped).
The right place for formatting it properly is the RFC 5322 & friends
implementation, i.e. GMime, so I wrote a trivial stream filter which does a
perfect job afaict.
I’m sure it does. (
> I’ve been thinking of adding a GMimeFormatOptions to GMime. In fact, I
was planning on implementing that this weekend…
A GList or GHashTable would be much better than my filter. I hard-wired
the headers we want to remove for the time being, but there /may/ be others
which should be hidden. E.g. the user-agent which carries information about
the MUA and the OS the recipient doesn't need to (actually: shouldn't) know, as
this is helpful for crafting a targeted attack against the sender's system (we
all know that there are NO BUGS AT ALL in Balsa, though - ROTFL ;-).
Yep.
Jeff
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