63 lines
1.1 KiB
C
63 lines
1.1 KiB
C
/* $FreeBSD$ */
|
|
|
|
/*
|
|
* Copyright (C) 2012 by Darren Reed.
|
|
*
|
|
* See the IPFILTER.LICENCE file for details on licencing.
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
#include "ipf.h"
|
|
|
|
|
|
int
|
|
addipopt(char *op, struct ipopt_names *io, int len, char *class)
|
|
{
|
|
int olen = len;
|
|
struct in_addr ipadr;
|
|
u_short val;
|
|
u_char lvl;
|
|
char *s;
|
|
|
|
if ((len + io->on_siz) > 48) {
|
|
fprintf(stderr, "options too long\n");
|
|
return (0);
|
|
}
|
|
len += io->on_siz;
|
|
*op++ = io->on_value;
|
|
if (io->on_siz > 1) {
|
|
s = op;
|
|
*op++ = io->on_siz;
|
|
*op++ = IPOPT_MINOFF;
|
|
|
|
if (class) {
|
|
switch (io->on_value)
|
|
{
|
|
case IPOPT_SECURITY :
|
|
lvl = seclevel(class);
|
|
*(op - 1) = lvl;
|
|
break;
|
|
case IPOPT_RR :
|
|
case IPOPT_TS :
|
|
s[IPOPT_OLEN] = IPOPT_MINOFF - 1 + 4;
|
|
break;
|
|
case IPOPT_LSRR :
|
|
case IPOPT_SSRR :
|
|
ipadr.s_addr = inet_addr(class);
|
|
s[IPOPT_OLEN] = IPOPT_MINOFF - 1 + 4;
|
|
bcopy((char *)&ipadr, op, sizeof(ipadr));
|
|
break;
|
|
case IPOPT_SATID :
|
|
val = atoi(class);
|
|
bcopy((char *)&val, op, 2);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (opts & OPT_DEBUG)
|
|
fprintf(stderr, "bo: %s %d %#x: %d\n",
|
|
io->on_name, io->on_value, io->on_bit, len);
|
|
return (len - olen);
|
|
}
|