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/*
* Copyright (C) 1993-2002 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*/
#if defined(__sgi) && (IRIX > 602)
# include <sys/ptimers.h>
#endif
#if (SOLARIS2 >= 7)
# define _SYS_VARARGS_H
# define _VARARGS_H
#endif
#if defined(__STDC__)
# include <stdarg.h>
#else
# include <varargs.h>
#endif
#include <stdio.h>
#include <assert.h>
#include <string.h>
#include <sys/types.h>
#if !defined(__SVR4) && !defined(__svr4__)
#include <strings.h>
#else
#include <sys/byteorder.h>
#endif
#include <sys/param.h>
#include <sys/time.h>
#include <stdlib.h>
#include <unistd.h>
#include <stddef.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netinet/in_systm.h>
#ifndef linux
#include <netinet/ip_var.h>
#endif
#include <netinet/ip.h>
#include <netinet/udp.h>
#include <netinet/tcp.h>
#include <netinet/ip_icmp.h>
#include <net/if.h>
#include <netdb.h>
#include <arpa/nameser.h>
#include <resolv.h>
#include "ip_compat.h"
#include <netinet/tcpip.h>
#include "ip_fil.h"
#include "ipf.h"
#include "ipt.h"
#if !defined(lint)
static const char sccsid[] = "@(#)misc.c 1.3 2/4/96 (C) 1995 Darren Reed";
static const char rcsid[] = "@(#)$Id: misc.c,v 2.2.2.9 2002/12/06 11:40:27 darrenr Exp $";
#endif
extern int opts;
void printpacket(ip)
ip_t *ip;
{
tcphdr_t *tcp;
u_short len;
if (ip->ip_v == 4)
len = ntohs(ip->ip_len);
else if (ip->ip_v == 6)
len = ntohs(((u_short *)ip)[2]) + 40;
else
len = 0;
if ((opts & OPT_HEX) == OPT_HEX) {
u_char *s;
int i;
for (s = (u_char *)ip, i = 0; i < len; i++) {
printf("%02x", *s++ & 0xff);
if (len - i > 1) {
i++;
printf("%02x", *s++ & 0xff);
}
if (i + 1 != len)
putchar(' ');
}
putchar('\n');
return;
}
if (ip->ip_v == 6) {
printpacket6(ip);
return;
}
tcp = (struct tcphdr *)((char *)ip + (ip->ip_hl << 2));
printf("ip %d(%d) %d", ntohs(ip->ip_len), ip->ip_hl << 2, ip->ip_p);
if (ip->ip_off & IP_OFFMASK)
printf(" @%d", ip->ip_off << 3);
(void)printf(" %s", inet_ntoa(ip->ip_src));
if (!(ip->ip_off & IP_OFFMASK))
if (ip->ip_p == IPPROTO_TCP || ip->ip_p == IPPROTO_UDP)
(void)printf(",%d", ntohs(tcp->th_sport));
(void)printf(" > ");
(void)printf("%s", inet_ntoa(ip->ip_dst));
if (!(ip->ip_off & IP_OFFMASK)) {
if (ip->ip_p == IPPROTO_TCP || ip->ip_p == IPPROTO_UDP)
(void)printf(",%d", ntohs(tcp->th_dport));
if ((ip->ip_p == IPPROTO_TCP) && (tcp->th_flags)) {
putchar(' ');
if (tcp->th_flags & TH_FIN)
putchar('F');
if (tcp->th_flags & TH_SYN)
putchar('S');
if (tcp->th_flags & TH_RST)
putchar('R');
if (tcp->th_flags & TH_PUSH)
putchar('P');
if (tcp->th_flags & TH_ACK)
putchar('A');
if (tcp->th_flags & TH_URG)
putchar('U');
if (tcp->th_flags & TH_ECN)
putchar('E');
if (tcp->th_flags & TH_CWR)
putchar('C');
}
}
putchar('\n');
}
/*
* This is meant to work without the IPv6 header files being present or
* the inet_ntop() library.
*/
void printpacket6(ip)
ip_t *ip;
{
u_char *buf, p, hops;
u_short plen, *addrs;
tcphdr_t *tcp;
u_32_t flow;
buf = (u_char *)ip;
tcp = (tcphdr_t *)(buf + 40);
p = buf[6];
hops = buf[7];
flow = ntohl(*(u_32_t *)buf);
flow &= 0xfffff;
plen = ntohs(*((u_short *)buf +2));
addrs = (u_short *)buf + 4;
printf("ip6/%d %d %#x %d", buf[0] & 0xf, plen, flow, p);
printf(" %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
ntohs(addrs[0]), ntohs(addrs[1]), ntohs(addrs[2]),
ntohs(addrs[3]), ntohs(addrs[4]), ntohs(addrs[5]),
ntohs(addrs[6]), ntohs(addrs[7]));
if (plen >= 4)
if (p == IPPROTO_TCP || p == IPPROTO_UDP)
(void)printf(",%d", ntohs(tcp->th_sport));
printf(" >");
addrs += 8;
printf(" %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
ntohs(addrs[0]), ntohs(addrs[1]), ntohs(addrs[2]),
ntohs(addrs[3]), ntohs(addrs[4]), ntohs(addrs[5]),
ntohs(addrs[6]), ntohs(addrs[7]));
if (plen >= 4)
if (p == IPPROTO_TCP || p == IPPROTO_UDP)
(void)printf(",%d", ntohs(tcp->th_dport));
putchar('\n');
}
#if defined(__STDC__)
void verbose(char *fmt, ...)
#else
void verbose(fmt, va_alist)
char *fmt;
va_dcl
#endif
{
va_list pvar;
va_start(pvar, fmt);
if (opts & OPT_VERBOSE)
vprintf(fmt, pvar);
va_end(pvar);
}
#ifdef __STDC__
void debug(char *fmt, ...)
#else
void debug(fmt, va_alist)
char *fmt;
va_dcl
#endif
{
va_list pvar;
va_start(pvar, fmt);
if (opts & OPT_DEBUG)
vprintf(fmt, pvar);
va_end(pvar);
}
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