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* nss/nss_files/files-hosts.c (LINE_PARSER): Support IPv6-style

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addresses for IPv4 queries if they can be mapped.
This commit is contained in:
Ulrich Drepper 2006-11-20 03:26:35 +00:00
parent b1f0c2a609
commit 36c0a63665
2 changed files with 30 additions and 9 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2006-11-19 Ulrich Drepper <drepper@redhat.com>
* nss/nss_files/files-hosts.c (LINE_PARSER): Support IPv6-style
addresses for IPv4 queries if they can be mapped.
2006-11-16 Jakub Jelinek <jakub@redhat.com>
* sysdeps/x86_64/fpu/s_copysignf.S (__copysignf): Switch to .text.

34
nss/nss_files/files-hosts.c
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@ -1,5 +1,5 @@
/* Hosts file parser in nss_files module.
Copyright (C) 1996-2001, 2003, 2004 Free Software Foundation, Inc.
Copyright (C) 1996-2001, 2003, 2004, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -55,14 +55,30 @@ LINE_PARSER
STRING_FIELD (addr, isspace, 1);
/* Parse address. */
if (inet_pton (af, addr, entdata->host_addr) <= 0
&& (af != AF_INET6 || (flags & AI_V4MAPPED) == 0
|| inet_pton (AF_INET, addr, entdata->host_addr) <= 0
|| (map_v4v6_address ((char *) entdata->host_addr,
(char *) entdata->host_addr),
0)))
/* Illegal address: ignore line. */
return 0;
if (inet_pton (af, addr, entdata->host_addr) <= 0)
{
if (af == AF_INET6 && (flags & AI_V4MAPPED) != 0
&& inet_pton (AF_INET, addr, entdata->host_addr) > 0)
map_v4v6_address ((char *) entdata->host_addr,
(char *) entdata->host_addr);
else if (af == AF_INET
&& inet_pton (AF_INET6, addr, entdata->host_addr) > 0)
{
if (IN6_IS_ADDR_V4MAPPED (entdata->host_addr))
memcpy (entdata->host_addr, entdata->host_addr + 12, INADDRSZ);
else if (IN6_IS_ADDR_LOOPBACK (entdata->host_addr))
{
in_addr_t localhost = htonl (INADDR_LOOPBACK);
memcpy (entdata->host_addr, &localhost, sizeof (localhost));
}
else
/* Illegal address: ignore line. */
return 0;
}
else
/* Illegal address: ignore line. */
return 0;
}
/* We always return entries of the requested form. */
result->h_addrtype = af;