191 lines
4.0 KiB
C
191 lines
4.0 KiB
C
/* $NetBSD: misc.c,v 1.5 2002/04/09 02:32:53 thorpej Exp $ */
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/*
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* Copyright (C) 1993-2002 by Darren Reed.
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*
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* See the IPFILTER.LICENCE file for details on licencing.
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*/
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#ifdef __sgi
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# include <sys/ptimers.h>
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#endif
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#if (SOLARIS2 >= 7)
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# define _SYS_VARARGS_H
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# define _VARARGS_H
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#endif
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#if defined(__STDC__)
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# include <stdarg.h>
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#else
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# include <varargs.h>
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#endif
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#include <stdio.h>
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#include <assert.h>
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#include <string.h>
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#include <sys/types.h>
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#if !defined(__SVR4) && !defined(__svr4__)
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#include <strings.h>
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#else
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#include <sys/byteorder.h>
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#endif
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#include <sys/param.h>
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#include <sys/time.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stddef.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netinet/in_systm.h>
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#ifndef linux
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#include <netinet/ip_var.h>
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#endif
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#include <netinet/ip.h>
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#include <netinet/udp.h>
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#include <netinet/tcp.h>
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#include <netinet/ip_icmp.h>
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#include <net/if.h>
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#include <netdb.h>
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#include <arpa/nameser.h>
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#include <resolv.h>
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#include "ip_compat.h"
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#include <netinet/tcpip.h>
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#include "ip_fil.h"
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#include "ipf.h"
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#include "ipt.h"
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#if !defined(lint)
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static const char sccsid[] __attribute__((__unused__)) =
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"@(#)misc.c 1.3 2/4/96 (C) 1995 Darren Reed";
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static const char rcsid[] __attribute__((__unused__)) =
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"@(#)Id: misc.c,v 2.2.2.7 2002/02/22 15:32:55 darrenr Exp";
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#endif
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extern int opts;
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void printpacket(ip)
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ip_t *ip;
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{
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tcphdr_t *tcp;
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u_short len;
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if (ip->ip_v == 4)
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len = ntohs(ip->ip_len);
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else if (ip->ip_v == 6)
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len = ntohs(((u_short *)ip)[2]) + 40;
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else
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len = 0;
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if ((opts & OPT_HEX) == OPT_HEX) {
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u_char *s;
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int i;
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for (s = (u_char *)ip, i = 0; i < len; i++) {
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printf("%02x", *s++ & 0xff);
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if (len - i > 1) {
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i++;
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printf("%02x", *s++ & 0xff);
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}
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putchar(' ');
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}
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putchar('\n');
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return;
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}
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if (ip->ip_v == 6) {
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printpacket6(ip);
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return;
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}
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tcp = (struct tcphdr *)((char *)ip + (ip->ip_hl << 2));
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printf("ip %d(%d) %d", ntohs(ip->ip_len), ip->ip_hl << 2, ip->ip_p);
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if (ip->ip_off & IP_OFFMASK)
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printf(" @%d", ip->ip_off << 3);
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(void)printf(" %s", inet_ntoa(ip->ip_src));
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if (!(ip->ip_off & IP_OFFMASK))
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if (ip->ip_p == IPPROTO_TCP || ip->ip_p == IPPROTO_UDP)
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(void)printf(",%d", ntohs(tcp->th_sport));
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(void)printf(" > ");
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(void)printf("%s", inet_ntoa(ip->ip_dst));
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if (!(ip->ip_off & IP_OFFMASK))
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if (ip->ip_p == IPPROTO_TCP || ip->ip_p == IPPROTO_UDP)
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(void)printf(",%d", ntohs(tcp->th_dport));
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putchar('\n');
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}
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/*
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* This is meant to work without the IPv6 header files being present or
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* the inet_ntop() library.
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*/
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void printpacket6(ip)
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ip_t *ip;
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{
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u_char *buf, p, hops;
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u_short plen, *addrs;
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tcphdr_t *tcp;
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u_32_t flow;
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buf = (u_char *)ip;
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tcp = (tcphdr_t *)(buf + 40);
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p = buf[6];
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hops = buf[7];
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flow = ntohl(*(u_32_t *)buf);
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flow &= 0xfffff;
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plen = ntohs(*((u_short *)buf +2));
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addrs = (u_short *)buf + 4;
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printf("ip6/%d %d %#x %d", buf[0] & 0xf, plen, flow, p);
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printf(" %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
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ntohs(addrs[0]), ntohs(addrs[1]), ntohs(addrs[2]),
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ntohs(addrs[3]), ntohs(addrs[4]), ntohs(addrs[5]),
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ntohs(addrs[6]), ntohs(addrs[7]));
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if (plen >= 4)
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if (p == IPPROTO_TCP || p == IPPROTO_UDP)
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(void)printf(",%d", ntohs(tcp->th_sport));
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printf(" >");
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addrs += 8;
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printf(" %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
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ntohs(addrs[0]), ntohs(addrs[1]), ntohs(addrs[2]),
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ntohs(addrs[3]), ntohs(addrs[4]), ntohs(addrs[5]),
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ntohs(addrs[6]), ntohs(addrs[7]));
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if (plen >= 4)
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if (p == IPPROTO_TCP || p == IPPROTO_UDP)
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(void)printf(",%d", ntohs(tcp->th_dport));
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putchar('\n');
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}
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#if defined(__STDC__)
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void verbose(char *fmt, ...)
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#else
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void verbose(fmt, va_alist)
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char *fmt;
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va_dcl
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#endif
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{
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va_list pvar;
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va_start(pvar, fmt);
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if (opts & OPT_VERBOSE)
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vprintf(fmt, pvar);
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va_end(pvar);
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}
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#ifdef __STDC__
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void debug(char *fmt, ...)
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#else
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void debug(fmt, va_alist)
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char *fmt;
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va_dcl
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#endif
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{
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va_list pvar;
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va_start(pvar, fmt);
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if (opts & OPT_DEBUG)
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vprintf(fmt, pvar);
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va_end(pvar);
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}
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