510 lines
13 KiB
C
510 lines
13 KiB
C
/* $NetBSD: fils.c,v 1.14 1998/07/12 15:01:49 veego Exp $ */
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/*
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* Copyright (C) 1993-1997 by Darren Reed.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that this notice is preserved and due credit is given
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* to the original author and the contributors.
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*/
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#include <stdio.h>
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#include <string.h>
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#if !defined(__SVR4) && !defined(__svr4__)
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#include <strings.h>
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#endif
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/param.h>
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#include <sys/file.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stddef.h>
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#include <nlist.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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#include <netinet/ip.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 <netinet/tcp.h>
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#include "netinet/ip_compat.h"
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#include "netinet/ip_fil.h"
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#include "ipf.h"
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#include "netinet/ip_proxy.h"
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#include "netinet/ip_nat.h"
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#include "netinet/ip_frag.h"
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#include "netinet/ip_state.h"
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#include "netinet/ip_auth.h"
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#include "kmem.h"
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#if defined(__NetBSD__) || (__OpenBSD__)
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#include <paths.h>
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#endif
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#if !defined(lint)
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static const char sccsid[] = "@(#)fils.c 1.21 4/20/96 (C) 1993-1996 Darren Reed";
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static const char rcsid[] = "@(#)Id: fils.c,v 2.0.2.25.2.4 1998/06/08 06:58:12 darrenr Exp ";
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#endif
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#ifdef _PATH_UNIX
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#define VMUNIX _PATH_UNIX
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#else
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#define VMUNIX "/vmunix"
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#endif
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extern char *optarg;
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#define PRINTF (void)printf
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#define FPRINTF (void)fprintf
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#define F_IN 0
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#define F_OUT 1
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#define F_AC 2
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static char *filters[4] = { "ipfilter(in)", "ipfilter(out)",
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"ipacct(in)", "ipacct(out)" };
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int opts = 0;
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extern int main __P((int, char *[]));
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static void showstats __P((int, friostat_t *));
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static void showfrstates __P((int, ipfrstat_t *));
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static void showlist __P((friostat_t *));
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static void showipstates __P((int, ips_stat_t *));
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static void showauthstates __P((int, fr_authstat_t *));
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static void Usage __P((char *));
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static void printlist __P((frentry_t *));
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static void Usage(name)
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char *name;
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{
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fprintf(stderr, "Usage: %s [-aAfhIinosv] [-d <device>]\n", name);
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exit(1);
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}
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int main(argc,argv)
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int argc;
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char *argv[];
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{
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fr_authstat_t frauthst;
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friostat_t fio;
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ips_stat_t ipsst;
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ipfrstat_t ifrst;
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char *name = NULL, *device = IPL_NAME;
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int c, fd;
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if (openkmem() == -1)
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exit(-1);
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(void)setuid(getuid());
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(void)setgid(getgid());
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while ((c = getopt(argc, argv, "aAfhIinosvd:")) != -1)
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{
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switch (c)
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{
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case 'a' :
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opts |= OPT_ACCNT|OPT_SHOWLIST;
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break;
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case 'A' :
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opts |= OPT_AUTHSTATS;
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break;
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case 'd' :
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device = optarg;
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break;
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case 'f' :
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opts |= OPT_FRSTATES;
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break;
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case 'h' :
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opts |= OPT_HITS;
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break;
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case 'i' :
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opts |= OPT_INQUE|OPT_SHOWLIST;
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break;
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case 'I' :
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opts |= OPT_INACTIVE;
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break;
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case 'n' :
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opts |= OPT_SHOWLINENO;
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break;
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case 'o' :
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opts |= OPT_OUTQUE|OPT_SHOWLIST;
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break;
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case 's' :
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opts |= OPT_IPSTATES;
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break;
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case 'v' :
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opts |= OPT_VERBOSE;
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break;
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default :
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Usage(argv[0]);
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break;
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}
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}
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if ((fd = open(device, O_RDONLY)) < 0) {
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perror("open");
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exit(-1);
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}
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bzero((char *)&fio, sizeof(fio));
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bzero((char *)&ipsst, sizeof(ipsst));
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bzero((char *)&ifrst, sizeof(ifrst));
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if (ioctl(fd, SIOCGETFS, &fio) == -1) {
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perror("ioctl(SIOCGETFS)");
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exit(-1);
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}
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if ((opts & OPT_IPSTATES)) {
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int sfd = open(IPL_STATE, O_RDONLY);
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if (sfd == -1) {
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perror("open");
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exit(-1);
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}
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if ((ioctl(sfd, SIOCGIPST, &ipsst) == -1)) {
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perror("ioctl(SIOCGIPST)");
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exit(-1);
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}
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close(sfd);
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}
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if ((opts & OPT_FRSTATES) && (ioctl(fd, SIOCGFRST, &ifrst) == -1)) {
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perror("ioctl(SIOCGFRST)");
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exit(-1);
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}
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if (opts & OPT_VERBOSE)
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PRINTF("opts %#x name %s\n", opts, name ? name : "<>");
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if ((opts & OPT_AUTHSTATS) &&
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(ioctl(fd, SIOCATHST, &frauthst) == -1)) {
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perror("ioctl(SIOCATHST)");
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exit(-1);
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}
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if (opts & OPT_SHOWLIST) {
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showlist(&fio);
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if ((opts & OPT_OUTQUE) && (opts & OPT_INQUE)){
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opts &= ~OPT_OUTQUE;
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showlist(&fio);
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}
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} else {
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if (opts & OPT_IPSTATES)
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showipstates(fd, &ipsst);
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else if (opts & OPT_FRSTATES)
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showfrstates(fd, &ifrst);
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else if (opts & OPT_AUTHSTATS)
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showauthstates(fd, &frauthst);
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else
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showstats(fd, &fio);
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}
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return 0;
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}
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/*
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* read the kernel stats for packets blocked and passed
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*/
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static void showstats(fd, fp)
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int fd;
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struct friostat *fp;
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{
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int frf = 0;
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if (ioctl(fd, SIOCGETFF, &frf) == -1)
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perror("ioctl(SIOCGETFF)");
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#if SOLARIS
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PRINTF("dropped packets:\tin %lu\tout %lu\n",
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fp->f_st[0].fr_drop, fp->f_st[1].fr_drop);
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PRINTF("non-ip packets:\t\tin %lu\tout %lu\n",
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fp->f_st[0].fr_notip, fp->f_st[1].fr_notip);
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PRINTF(" bad packets:\t\tin %lu\tout %lu\n",
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fp->f_st[0].fr_bad, fp->f_st[1].fr_bad);
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#endif
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PRINTF(" input packets:\t\tblocked %lu passed %lu nomatch %lu",
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fp->f_st[0].fr_block, fp->f_st[0].fr_pass,
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fp->f_st[0].fr_nom);
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PRINTF(" counted %lu\n", fp->f_st[0].fr_acct);
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PRINTF("output packets:\t\tblocked %lu passed %lu nomatch %lu",
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fp->f_st[1].fr_block, fp->f_st[1].fr_pass,
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fp->f_st[1].fr_nom);
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PRINTF(" counted %lu\n", fp->f_st[0].fr_acct);
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PRINTF(" input packets logged:\tblocked %lu passed %lu\n",
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fp->f_st[0].fr_bpkl, fp->f_st[0].fr_ppkl);
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PRINTF("output packets logged:\tblocked %lu passed %lu\n",
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fp->f_st[1].fr_bpkl, fp->f_st[1].fr_ppkl);
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PRINTF(" packets logged:\tinput %lu output %lu\n",
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fp->f_st[0].fr_pkl, fp->f_st[1].fr_pkl);
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PRINTF(" log failures:\t\tinput %lu output %lu\n",
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fp->f_st[0].fr_skip, fp->f_st[1].fr_skip);
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PRINTF("fragment state(in):\tkept %lu\tlost %lu\n",
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fp->f_st[0].fr_nfr, fp->f_st[0].fr_bnfr);
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PRINTF("fragment state(out):\tkept %lu\tlost %lu\n",
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fp->f_st[1].fr_nfr, fp->f_st[1].fr_bnfr);
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PRINTF("packet state(in):\tkept %lu\tlost %lu\n",
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fp->f_st[0].fr_ads, fp->f_st[0].fr_bads);
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PRINTF("packet state(out):\tkept %lu\tlost %lu\n",
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fp->f_st[1].fr_ads, fp->f_st[1].fr_bads);
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PRINTF("ICMP replies:\t%lu\tTCP RSTs sent:\t%lu\n",
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fp->f_st[0].fr_ret, fp->f_st[1].fr_ret);
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PRINTF("Result cache hits(in):\t%lu\t(out):\t%lu\n",
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fp->f_st[0].fr_chit, fp->f_st[1].fr_chit);
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PRINTF("IN Pullups succeeded:\t%lu\tfailed:\t%lu\n",
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fp->f_st[0].fr_pull[0], fp->f_st[0].fr_pull[1]);
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PRINTF("OUT Pullups succeeded:\t%lu\tfailed:\t%lu\n",
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fp->f_st[1].fr_pull[0], fp->f_st[1].fr_pull[1]);
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PRINTF("Fastroute successes:\t%lu\tfailures:\t%lu\n",
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fp->f_froute[0], fp->f_froute[1]);
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PRINTF("TCP cksum fails(in):\t%lu\t(out):\t%lu\n",
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fp->f_st[0].fr_tcpbad, fp->f_st[1].fr_tcpbad);
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PRINTF("Packet log flags set: (%#x)\n", frf);
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if (frf & FF_LOGPASS)
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PRINTF("\tpackets passed through filter\n");
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if (frf & FF_LOGBLOCK)
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PRINTF("\tpackets blocked by filter\n");
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if (frf & FF_LOGNOMATCH)
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PRINTF("\tpackets not matched by filter\n");
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if (!frf)
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PRINTF("\tnone\n");
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}
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static void printlist(fp)
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frentry_t *fp;
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{
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struct frentry fb;
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int n;
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for (n = 1; fp; n++) {
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if (kmemcpy((char *)&fb, (u_long)fp, sizeof(fb)) == -1) {
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perror("kmemcpy");
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return;
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}
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fp = &fb;
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if (opts & OPT_OUTQUE)
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fp->fr_flags |= FR_OUTQUE;
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if (opts & (OPT_HITS|OPT_VERBOSE))
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#ifdef USE_QUAD_T
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PRINTF("%qd ", (long long)fp->fr_hits);
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#else
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PRINTF("%ld ", fp->fr_hits);
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#endif
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if (opts & (OPT_ACCNT|OPT_VERBOSE))
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#ifdef USE_QUAD_T
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PRINTF("%qd ", (long long)fp->fr_bytes);
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#else
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PRINTF("%ld ", fp->fr_bytes);
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#endif
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if (opts & OPT_SHOWLINENO)
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PRINTF("@%d ", n);
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printfr(fp);
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if (opts & OPT_VERBOSE)
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binprint(fp);
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if (fp->fr_grp)
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printlist(fp->fr_grp);
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fp = fp->fr_next;
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}
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}
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/*
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* print out filter rule list
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*/
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static void showlist(fiop)
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struct friostat *fiop;
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{
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struct frentry *fp = NULL;
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int i, set;
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set = fiop->f_active;
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if (opts & OPT_INACTIVE)
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set = 1 - set;
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if (opts & OPT_ACCNT) {
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i = F_AC;
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if (opts & OPT_OUTQUE) {
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fp = (struct frentry *)fiop->f_acctout[set];
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i++;
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} else if (opts & OPT_INQUE)
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fp = (struct frentry *)fiop->f_acctin[set];
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else {
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FPRINTF(stderr, "No -i or -o given with -a\n");
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return;
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}
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} else if (opts & OPT_OUTQUE) {
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i = F_OUT;
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fp = (struct frentry *)fiop->f_fout[set];
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} else if (opts & OPT_INQUE) {
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i = F_IN;
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fp = (struct frentry *)fiop->f_fin[set];
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} else
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return;
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if (opts & OPT_VERBOSE)
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FPRINTF(stderr, "showlist:opts %#x i %d\n", opts, i);
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if (opts & OPT_VERBOSE)
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PRINTF("fp %p set %d\n", fp, set);
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if (!fp) {
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FPRINTF(stderr, "empty list for %s%s\n",
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(opts & OPT_INACTIVE) ? "inactive " : "", filters[i]);
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return;
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}
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printlist(fp);
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}
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static void showipstates(fd, ipsp)
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int fd;
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ips_stat_t *ipsp;
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{
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ipstate_t *istab[IPSTATE_SIZE], ips;
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int i;
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PRINTF("IP states added:\n\t%lu TCP\n\t%lu UDP\n\t%lu ICMP\n",
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ipsp->iss_tcp, ipsp->iss_udp, ipsp->iss_icmp);
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PRINTF("\t%lu hits\n\t%lu misses\n", ipsp->iss_hits, ipsp->iss_miss);
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PRINTF("\t%lu maximum\n\t%lu no memory\n",
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ipsp->iss_max, ipsp->iss_nomem);
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PRINTF("\t%lu active\n\t%lu expired\n\t%lu closed\n",
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ipsp->iss_active, ipsp->iss_expire, ipsp->iss_fin);
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if (kmemcpy((char *)istab, (u_long)ipsp->iss_table, sizeof(istab)))
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return;
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for (i = 0; i < IPSTATE_SIZE; i++)
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while (istab[i]) {
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if (kmemcpy((char *)&ips, (u_long)istab[i],
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sizeof(ips)) == -1)
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break;
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PRINTF("%s -> ", inet_ntoa(ips.is_src));
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PRINTF("%s ttl %ld pass %d pr %d state %d/%d\n",
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inet_ntoa(ips.is_dst), ips.is_age,
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ips.is_pass, ips.is_p, ips.is_state[0],
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ips.is_state[1]);
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#ifdef USE_QUAD_T
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PRINTF("\tpkts %qd bytes %qd",
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(long long)ips.is_pkts,
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(long long)ips.is_bytes);
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#else
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PRINTF("\tpkts %ld bytes %ld",
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ips.is_pkts, ips.is_bytes);
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#endif
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if (ips.is_p == IPPROTO_TCP)
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PRINTF("\t%hu -> %hu %lu:%lu %hu:%hu\n",
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ntohs(ips.is_sport),
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ntohs(ips.is_dport),
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ips.is_seq, ips.is_ack,
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ips.is_swin, ips.is_dwin);
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else if (ips.is_p == IPPROTO_UDP)
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PRINTF(" %hu -> %hu\n", ntohs(ips.is_sport),
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ntohs(ips.is_dport));
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else if (ips.is_p == IPPROTO_ICMP)
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PRINTF(" %hu %hu %d\n", ips.is_icmp.ics_id,
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ips.is_icmp.ics_seq,
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ips.is_icmp.ics_type);
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/* phil@ultimate.com ... */
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PRINTF("\t");
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/* from "printfr()" */
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if (ips.is_pass & FR_PASS) {
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PRINTF("pass");
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} else if (ips.is_pass & FR_BLOCK) {
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PRINTF("block");
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if (ips.is_pass & FR_RETICMP)
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PRINTF(" return-icmp");
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if (ips.is_pass & FR_RETRST)
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PRINTF(" return-rst");
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} else if ((ips.is_pass & FR_LOGMASK) == FR_LOG) {
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PRINTF("log");
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if (ips.is_pass & FR_LOGBODY)
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PRINTF(" body");
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if (ips.is_pass & FR_LOGFIRST)
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PRINTF(" first");
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} else if (ips.is_pass & FR_ACCOUNT)
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PRINTF("count");
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if (ips.is_pass & FR_OUTQUE)
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PRINTF(" out");
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else
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PRINTF(" in");
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if ((ips.is_pass & (FR_LOGB|FR_LOGP)) != 0) {
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PRINTF(" log");
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if (ips.is_pass & FR_LOGBODY)
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PRINTF(" body");
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if (ips.is_pass & FR_LOGFIRST)
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PRINTF(" first");
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if (ips.is_pass & FR_LOGORBLOCK)
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PRINTF(" or-block");
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}
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if (ips.is_pass & FR_QUICK)
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PRINTF(" quick");
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if (ips.is_pass & FR_KEEPFRAG)
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PRINTF(" keep frags");
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/* a given; no? */
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if (ips.is_pass & FR_KEEPSTATE)
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PRINTF(" keep state");
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PRINTF("\n");
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/* ... phil@ultimate.com */
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PRINTF("\tpkt_flags & %x = %x,\t", ips.is_flags & 0xf,
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ips.is_flags >> 4);
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PRINTF("\tpkt_options & %x = %x\n", ips.is_optmsk,
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ips.is_opt);
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PRINTF("\tpkt_security & %x = %x, pkt_auth & %x = %x\n",
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ips.is_secmsk, ips.is_sec, ips.is_authmsk,
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ips.is_auth);
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istab[i] = ips.is_next;
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}
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}
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static void showfrstates(fd, ifsp)
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int fd;
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ipfrstat_t *ifsp;
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{
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struct ipfr *ipfrtab[IPFT_SIZE], ifr;
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int i;
|
|
|
|
PRINTF("IP fragment states:\n\t%lu new\n\t%lu expired\n\t%lu hits\n",
|
|
ifsp->ifs_new, ifsp->ifs_expire, ifsp->ifs_hits);
|
|
PRINTF("\t%lu no memory\n\t%lu already exist\n",
|
|
ifsp->ifs_nomem, ifsp->ifs_exists);
|
|
PRINTF("\t%lu inuse\n", ifsp->ifs_inuse);
|
|
if (kmemcpy((char *)ipfrtab, (u_long)ifsp->ifs_table, sizeof(ipfrtab)))
|
|
return;
|
|
for (i = 0; i < IPFT_SIZE; i++)
|
|
while (ipfrtab[i]) {
|
|
if (kmemcpy((char *)&ifr, (u_long)ipfrtab[i],
|
|
sizeof(ifr)) == -1)
|
|
break;
|
|
PRINTF("%s -> ", inet_ntoa(ifr.ipfr_src));
|
|
PRINTF("%s %d %d %d %#02x = %#x\n",
|
|
inet_ntoa(ifr.ipfr_dst), ifr.ipfr_id,
|
|
ifr.ipfr_ttl, ifr.ipfr_p, ifr.ipfr_tos,
|
|
ifr.ipfr_pass);
|
|
ipfrtab[i] = ifr.ipfr_next;
|
|
}
|
|
}
|
|
|
|
|
|
static void showauthstates(fd, asp)
|
|
int fd;
|
|
fr_authstat_t *asp;
|
|
{
|
|
#ifdef USE_QUAD_T
|
|
printf("Authorisation hits: %qd\tmisses %qd\n",
|
|
(long long)asp->fas_hits, (long long)asp->fas_miss);
|
|
#else
|
|
printf("Authorisation hits: %ld\tmisses %ld\n", asp->fas_hits,
|
|
asp->fas_miss);
|
|
#endif
|
|
printf("nospace %ld\nadded %ld\nsendfail %ld\nsendok %ld\n",
|
|
asp->fas_nospace, asp->fas_added, asp->fas_sendfail,
|
|
asp->fas_sendok);
|
|
printf("queok %ld\nquefail %ld\nexpire %ld\n",
|
|
asp->fas_queok, asp->fas_quefail, asp->fas_expire);
|
|
}
|