| Current Path : /usr/src/contrib/ipfilter/lib/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/contrib/ipfilter/lib/tcp_flags.c |
/* $FreeBSD: release/9.1.0/contrib/ipfilter/lib/tcp_flags.c 170268 2007-06-04 02:54:36Z darrenr $ */
/*
* Copyright (C) 2000-2004 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*
* $Id: tcp_flags.c,v 1.8.2.1 2006/06/16 17:21:17 darrenr Exp $
*/
#include "ipf.h"
extern char flagset[];
extern u_char flags[];
u_char tcp_flags(flgs, mask, linenum)
char *flgs;
u_char *mask;
int linenum;
{
u_char tcpf = 0, tcpfm = 0;
char *s;
s = strchr(flgs, '/');
if (s)
*s++ = '\0';
if (*flgs == '0') {
tcpf = strtol(flgs, NULL, 0);
} else {
tcpf = tcpflags(flgs);
}
if (s != NULL) {
if (*s == '0')
tcpfm = strtol(s, NULL, 0);
else
tcpfm = tcpflags(s);
}
if (!tcpfm) {
if (tcpf == TH_SYN)
tcpfm = 0xff & ~(TH_ECN|TH_CWR);
else
tcpfm = 0xff & ~(TH_ECN);
}
*mask = tcpfm;
return tcpf;
}