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correct IPv4 option handling.

This commit is contained in:
itojun 2001-02-19 04:24:27 +00:00
parent 26a76076be
commit 5bc3f3ff96
1 changed files with 11 additions and 2 deletions
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13
sys/netinet6/ah_output.c
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@ -1,5 +1,5 @@
/* $NetBSD: ah_output.c,v 1.12 2000/10/02 03:55:42 itojun Exp $ */
/* $KAME: ah_output.c,v 1.25 2000/10/01 12:37:18 itojun Exp $ */
/* $NetBSD: ah_output.c,v 1.13 2001/02/19 04:24:27 itojun Exp $ */
/* $KAME: ah_output.c,v 1.28 2001/02/19 04:23:40 itojun Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@ -537,6 +537,15 @@ ah4_finaldst(m)
q = (u_char *)(ip + 1);
i = 0;
while (i < optlen) {
if (i + IPOPT_OPTVAL >= optlen)
return NULL;
if (q[i + IPOPT_OPTVAL] == IPOPT_EOL ||
q[i + IPOPT_OPTVAL] == IPOPT_NOP ||
i + IPOPT_OLEN < optlen)
;
else
return NULL;
switch (q[i + IPOPT_OPTVAL]) {
case IPOPT_EOL:
i = optlen; /* bye */