Date: Wed, 14 Aug 2013 03:09:16 +0800 From: orc <orc@...server.ru> To: musl@...ts.openwall.com Subject: Re: dn_expand() confuses postfix On Tue, 13 Aug 2013 14:38:17 -0400 Rich Felker <dalias@...ifal.cx> wrote: > 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). > > Cleaning up this code is part of the roadmap for 0.9.13, but I wasn't > aware that it was returning the wrong value. Thanks for bringing that > to my attention. > > > (btw running whole LAMP/FTP stack with musl - some issues appear > > like iconv need to be replaced with libiconv to make some CMS > > happy, so I have some compatibility experience here. > > Do you know what problems they hit with iconv? It's my intention that > iconv not need to be replaced. My guess is that the issue is failure > to automatically detect UTF-16 endianness via BOM, or missing charset > aliases for some charset strings. I don't know why some hacked-up CMS did not liked current iconv. But in phpinfo, iconv version shown as "unknown" which is probably traced to absense of /include/gnu/libc-version.h and I suspect that they check it or use some nonstandard extensions or PHP is mad. Building PHP 5.4 statically with gnu libiconv.a reset version to known one and everything works. I need to ask our php hackers about this (they maintain stuff) or grep for all iconv which appears in sources. > > > Musl much more perfect than I > > expected) > > Great to hear. :-) I replaced gnu libc stack with musl one on our middly loaded sites in large LAN/MAN and it works great and easier to maintain, fix and modify in a way you want :) > > Rich
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