102 Commits

Author SHA1 Message Date
Hajimu UMEMOTO
290789099b Exclude IPv4 address from doing longest match.
It prevented DNS based load balancing.

MFC after:	1 week
2014-06-23 15:43:27 +00:00
Hajimu UMEMOTO
cfaa2a0955 Use SOCK_CLOEXEC.
MFC after:	1 week
2014-06-19 11:49:36 +00:00
Hajimu UMEMOTO
6f63a1142c Retooling addrconfig() to exclude addresses on loopback interfaces
when looking for configured addresses.
This change is based upon the code from the submitter, and made
following changes:
- Exclude addresses assigned on interfaces which are down, like NetBSD
  does.
- Exclude addresses assigned on interfaces which are ifdisabled.

PR:		190824
Submitted by:	Justin McOmie
MFC after:	1 week
2014-06-18 18:07:19 +00:00
Kevin Lo
e06e816f67 Add support for UDP-Lite protocol (RFC 3828) to IPv4 and IPv6 stacks.
Tested with vlc and a test suite [1].

[1] http://www.erg.abdn.ac.uk/~gerrit/udp-lite/files/udplite_linux.tar.gz

Reviewed by:	jhb, glebius, adrian
2014-04-07 01:53:03 +00:00
Jilles Tjoelker
7253197882 libc: Use SOCK_CLOEXEC for various internal file descriptors.
This change avoids undesirably passing some internal file descriptors to a
process created (fork+exec) by another thread.

Kernel support for SOCK_CLOEXEC was added in r248534, March 19, 2013.
2013-09-06 21:02:06 +00:00
Jilles Tjoelker
a93705b06e libc: Make various internal file descriptors from fopen() close-on-exec. 2013-08-23 13:59:47 +00:00
Maksim Yevmenkin
0c19b5de29 Return zero from get_addrselectpolicy() when no source-address-selection
policy is installed.

MFC after:	1 week
2012-07-18 15:52:09 +00:00
Jilles Tjoelker
2bd56eacf8 libc: Remove some unused strings from getaddrinfo(). 2012-07-15 20:39:21 +00:00
Dimitry Andric
f61ac9d9bd Fix two warnings about self-assignment in libc. These normally only
trigger with clang, when you either use -save-temps, or ccache.

Reported by:	Sevan / Venture37 <venture37@gmail.com>
MFC after:	3 days
2012-06-06 21:16:26 +00:00
Xin LI
32ffd2336c Eliminate two cases of unwanted strncpy(). The name is not required
by the current code, and the results would get overwritten anyway
by subsequent memset().

Reviewed by:	ume
MFC after:	1 month
2012-04-02 07:42:17 +00:00
Hajimu UMEMOTO
324930d7f8 Handle the internal scope address representation of the KAME IPv6
stack for the node-local multicast address.

Spotted by:	Rainer Bredehorn <Bredehorn__at__gmx.de>
MFC after:	1 week
2012-01-07 09:01:19 +00:00
Hajimu UMEMOTO
bc42149220 Query DNS only once per an address family.
Obtained from:	KAME
MFC after:	2 weeks
2009-03-29 17:55:11 +00:00
Hajimu UMEMOTO
4d75630780 Add support for SCTP to getaddrinfo(3).
Now, getaddrinfo(3) returns two SOCK_STREAMs, IPPROTO_TCP and
IPPROTO_SCTP.  It confuses some programs.  If getaddrinfo(3) returns
IPPROTO_SCTP when SOCK_STREAM is specified by hints.ai_socktype, at
least Apache doesn't work.  So, I made getaddrinfo(3) to return
IPPROTO_SCTP with SOCK_STREAM only when IPPROTO_SCTP is specified
explicitly by hints.ai_protocol.

PR:		bin/128167
Submitted by:	Bruce Cran <bruce__at__cran.org.uk> (partly)
MFC after:	2 week
2009-03-25 16:23:43 +00:00
Hajimu UMEMOTO
d53978e3c0 getaddrinfo(3) should accept numeric when ai_socktype is not
specified in hint or hints is NULL.

PR:		bin/51827
Submitted by:	Mark Andrews <marka__at__isc.org>
MFC after:	1 week
2009-03-24 17:47:24 +00:00
Hajimu UMEMOTO
aba831de03 Shutup warning for DNAME RR.
PR:		bin/127591
Submitted by:	"Eugene M. Kim" <20080111.freebsd.org__at__ab.ote.we.lv>
MFC after:	1 week
2009-02-08 16:58:05 +00:00
Hajimu UMEMOTO
6b299433de Remove incomplete support of AI_ALL and AI_V4MAPPED.
Reported by:	"Heiko Wundram (Beenic)" <wundram__at__beenic.net>
2008-02-03 19:07:55 +00:00
JINMEI Tatuya
e47c82ed72 ensure the head entry of addrinfo chain has non-NULL ai_canonname to be
compliant with RFC3493.

PR: standards/114910
Approved by:   ume (mentor)
Approved by:   re
MFC after:     1 week
2007-09-05 18:08:14 +00:00
Hajimu UMEMOTO
e24e9d9988 do not overload the port number on to the return value of
str2number().  this could result in an unexpected code path.

Obtained from:	KAME
MFC after:	1 week
2006-07-23 15:31:03 +00:00
Hajimu UMEMOTO
816dc28540 remove obsolete comments.
MFC after:	3 days
2006-07-22 14:36:56 +00:00
Hajimu UMEMOTO
da83bf18e4 simplification in explore_numeric: unified the post-process with
GET_AI and GET_PORT.  Commented on an impossible case.

Obtained from:	KAME
MFC after:	1 week
2006-07-21 19:02:28 +00:00
Hajimu UMEMOTO
0cf41987df RFC3493 requires use of inet_aton for AF_INET.
Obtained from:	KAME
MFC after:	1 week
2006-07-21 19:00:22 +00:00
Hajimu UMEMOTO
0aceddcef7 clean-up: rewrote explore_null and explore_numeric without using sentinel.
we do not need it since we make (at most) a single addrinfo entry in these
cases.

Obtained from:	KAME
MFC after:	1 week
2006-07-21 18:57:44 +00:00
Hajimu UMEMOTO
06a99fe36f - Extend the nsswitch to support Services, Protocols and Rpc
databases.
- Make nsswitch support caching.

Submitted by:	Michael Bushkov <bushman__at__rsu.ru>
Sponsored by:	Google Summer of Code 2005
2006-04-28 12:03:38 +00:00
Hajimu UMEMOTO
3c3c80e4c8 fix indent. 2006-04-01 15:53:39 +00:00
Hajimu UMEMOTO
1259a17acd If the query choked with EDNS0, retry without EDNS0.
Obtained from:	res_nquery() of BIND9.
2006-03-28 07:42:57 +00:00
Hajimu UMEMOTO
90d1d883e9 - Use ANSI C prototype.
- Remove trailing space.
2006-03-25 11:46:37 +00:00
Hajimu UMEMOTO
aebc6ec293 When res_nquerydomain() returns SERVFAIL, we should try next domain. 2006-03-24 13:30:10 +00:00
Hajimu UMEMOTO
d05ad2ab4d When res_send() fails, we should reserve an error code. 2006-03-24 04:49:30 +00:00
Hajimu UMEMOTO
5342d17f09 Update the resolver in libc to BIND9's one.
Since, res_sendsigned(3) and the friends use MD5 functions, it is
hard to include them without having MD5 functions in libc.  So,
res_sendsigned(3) is not merged into libc.

Since, res_update(3) in BIND9 is not binary compatible with our
res_update(3), res_update(3) is leaved as is, except some
necessary modifications.
The res_update(3) and the friends are not essential part of the
resolver.  They are not defined in resolv.h but defined in
res_update.h separately in BIND9.  Further, they are not called from
our tree.  So, I hide them from our resolv.h, but leave them only
for binary backward compatibility (perhaps, no one calls them).

Since, struct __res_state_ext is not exposed in BIND9, I hide it
from our resolv.h.  And, global variable _res_ext is removed.  It
breaks binary backward compatibility.  But, since it is not used from
outside of our libc, I think it is safe.

Reviewed by:	arch@ (no objection)
2006-03-21 16:11:11 +00:00
Xin LI
f1fa5b4f51 When we are doing initialization against q, use its own size, not
the size of q2.  This should be a no-op because q and q2 are of
the same type.

Submitted by:	Alexey Dobriyan <adobriyan gmail com>
2006-03-21 12:39:29 +00:00
Hajimu UMEMOTO
3a0b3b6739 Handle the errors returned by res_querydomain() in same manner.
Reported by:	yar
Tested by:	yar, Rostislav Krasny <rosti.bsd__at__gmail.com>
MFC after:	1 week
2006-03-01 15:53:49 +00:00
Hajimu UMEMOTO
5ecccefb4a - Just query 'as is', if there is a trailing dot in the name.
- Don't query 'as is' twice.

PR:		bin/62139
Reported by:	Rostislav Krasny <rosti.bsd__at__gmail.com>
Tested by:	Rostislav Krasny <rosti.bsd__at__gmail.com>
Obtained from:	BIND9 (with some modification)
MFC after:	1 week
2006-02-24 16:53:42 +00:00
Hajimu UMEMOTO
85a71a15c8 Remove padding for ABI compatibility of ai_addrlen member
from struct addrinfo.  This change break ABI compatibility
on 64 bit arch.
2005-07-22 18:21:28 +00:00
Hajimu UMEMOTO
036ae3dd79 - The ai_addrlen of a struct addrinfo used to be a size_t, per
RFC 2553.  In XNS5.2, and subsequently in POSIX-2001 and RFC
  3493, it was changed to a socklen_t.  And, the n_net of a
  struct netent used to be an unsigned long integer.  In XNS5,
  and subsequently in POSIX-2001, it was changed to an uint32_t.
  To accomodate for this while preserving ABI compatibility with
  the old interface, we need to prepend or append 32 bits of
  padding, depending on the (LP64) architecture's endianness.
- Correct 1st argument of getnetbyaddr() to uint32_t on 32
  bit arch.  Stay as is on 64 bit arch for ABI backward
  compatibility for now.

Reviewed by:	das, peter
MFC after:	2 weeks
2005-05-15 20:15:15 +00:00
George V. Neville-Neil
fd57e549e0 Submitted by: Jinmei Tatuya, Hajimu Umemoto
Reviewed by:	rwatson at freebsd dot org
Approved by:	rwatson at freebsd dot org
MFC after:	1 week

Fix the matchlen() function so that it handles the IPv4 (AF_INET)
case correctly.  Until now it has been treating IPv4 addresses
as if they were IPv6 which could lead to corruption errors.
2005-05-14 19:43:10 +00:00
Hajimu UMEMOTO
f8997ca2f4 free ypbuf only when yp_match() succeed. 2005-05-13 17:30:03 +00:00
Hajimu UMEMOTO
943db5a2ab the 3rd argument of getsockname() should be socklen_t*.
Submitted by:	stefanf
2005-05-02 04:43:32 +00:00
Hajimu UMEMOTO
62e8b17d72 Now, our getservbyname(3) is thread-safe. So, we don't need
to protect it with mutex lock.
2005-04-15 18:15:12 +00:00
Hajimu UMEMOTO
159d2a98c5 hostalias() is not thread-safe. So, introduce _res_hostalias()
and use it.

Obtained from:	BIND9
2005-04-15 14:42:29 +00:00
Hajimu UMEMOTO
f35528f852 remove needless res_init() call.
Inspired by:	NetBSD
2005-04-14 11:44:43 +00:00
Hajimu UMEMOTO
2424b11851 - we are no longer shareing any resources to be locked between
getaddrinfo(3) and getipnodeby*(3).
- use definitions in reentrant.h.
- remove obsolete comment.
2005-04-06 15:36:34 +00:00
Hajimu UMEMOTO
148b7ece93 separate gai_strerror(3) from getaddrinfo.c.
Requested by:	phantom
2005-04-06 12:45:51 +00:00
Hajimu UMEMOTO
d7057edb15 make yp stuff re-entrant.
Obtained from:	NetBSD
2005-04-05 18:25:23 +00:00
Hajimu UMEMOTO
9def31dcd7 make _files_getaddrinfo() re-entrant.
Obtained from:	NetBSD
2005-04-04 19:45:27 +00:00
Alexey Zelkin
ed61386604 . Convert return type of gai_strerror() to 'const char *' as POSIX requires.
. Convert ai_errlist[] to simple 'char *' array, and appropriately
  optimize gai_strerror()
2005-02-14 11:33:12 +00:00
Hajimu UMEMOTO
8743b270c9 use strdup().
Obtained from:	KAME
MFC after:	1 week
2005-01-28 19:35:42 +00:00
Hajimu UMEMOTO
c224435ed9 implement AI_NUMERICSERV (as defined in RFC3493).
Obtained from:	KAME
MFC after:	1 week
2005-01-27 14:45:11 +00:00
Hajimu UMEMOTO
8755b918a1 fill ai_canonname field for numeric hostname, by the given hostname.
follow new recommendation in RFC3493.

Obtained from:	KAME
MFC after:	1 week
2005-01-27 14:41:56 +00:00
Hajimu UMEMOTO
d0d6a2c7cc query A RR before AAAA RR.
MFC after:	1 week
2005-01-27 08:03:46 +00:00
Maxim Sobolev
7b6cc40479 Don't ignore the last line of config file (/etc/hosts, /etc/services, etc)
which doesn't end in \n, since it may be very confusing. Also this should
increase consistency, since most other config files work just fine regardless
of the presence of traling \n in the last line.

MFC After:	2 weeks
2005-01-03 11:07:45 +00:00