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make a strict check before sending FQDN node information reply. sync w/kame

This commit is contained in:
itojun 2002-05-24 09:13:59 +00:00
parent 382ff1f23c
commit c3015f8b5d
1 changed files with 18 additions and 4 deletions
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22
sys/netinet6/icmp6.c
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@ -1,4 +1,4 @@
/* $NetBSD: icmp6.c,v 1.75 2002/03/05 08:13:56 itojun Exp $ */
/* $NetBSD: icmp6.c,v 1.76 2002/05/24 09:13:59 itojun Exp $ */
/* $KAME: icmp6.c,v 1.217 2001/06/20 15:03:29 jinmei Exp $ */
/*
@ -66,7 +66,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: icmp6.c,v 1.75 2002/03/05 08:13:56 itojun Exp $");
__KERNEL_RCSID(0, "$NetBSD: icmp6.c,v 1.76 2002/05/24 09:13:59 itojun Exp $");
#include "opt_inet.h"
#include "opt_ipsec.h"
@ -1540,6 +1540,11 @@ ni6_input(m, off)
}
#undef hostnamelen
#define isupper(x) ('A' <= (x) && (x) <= 'Z')
#define isalpha(x) (('A' <= (x) && (x) <= 'Z') || ('a' <= (x) && (x) <= 'z'))
#define isalnum(x) (isalpha(x) || ('0' <= (x) && (x) <= '9'))
#define tolower(x) (isupper(x) ? (x) + 'a' - 'A' : (x))
/*
* make a mbuf with DNS-encoded string. no compression support.
*
@ -1617,8 +1622,17 @@ ni6_nametodns(name, namelen, old)
if (i <= 0 || i >= 64)
goto fail;
*cp++ = i;
bcopy(p, cp, i);
cp += i;
if (!isalpha(p[0]) || !isalnum(p[i - 1]))
goto fail;
while (i > 0) {
if (!isalnum(*p) && *p != '-')
goto fail;
if (isupper(*p))
*cp++ = tolower(*p++);
else
*cp++ = *p++;
i--;
}
p = q;
if (p < name + namelen && *p == '.')
p++;