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Message-ID: <20130814220625.GT221@brightrain.aerifal.cx>
Date: Wed, 14 Aug 2013 18:06:25 -0400
From: Rich Felker <dalias@...ifal.cx>
To: musl@...ts.openwall.com
Subject: Re: dn_expand() confuses postfix
On Wed, Aug 14, 2013 at 02:19:20AM +0800, orc wrote:
> musl's dn_expand() confuses postfix - always returns 0, then postfix's
> libdns.a gets wrong shifts and gives up with something like:
>
> ../test_dns_lookup: lookup yandex.ru type MX flags 2
> ../test_dns_lookup: dns_query: yandex.ru (MX): OK
> ../test_dns_lookup: warning: dns_get_fixed: bad class: 30722
> ../test_dns_lookup: fatal: Name service error for name=yandex.ru type=MX: Malformed or unexpected name server reply
>
> If someone will face same error with postfix & musl, then get portable
> dn_expand.c from
> http://tclsysdns.googlecode.com/svn/trunk/unix/dn_expand.c and put it
> in src/dns (edit Makefile.in to include src & obj).
I've committed some fixes to this code. Please let me know if the
issue persists; I did not have test cases to check that the return
value is right, so there's a possibility it may be off-by-one or
something.
Rich
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