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freebsd-dev/contrib/ipfilter/fils.c

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/*
* Copyright (C) 1993-2001 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*/
#ifdef __FreeBSD__
# ifndef __FreeBSD_cc_version
# include <osreldate.h>
# else
# if __FreeBSD_cc_version < 430000
# include <osreldate.h>
# endif
# endif
#endif
#if defined(__sgi) && (IRIX > 602)
# include <sys/ptimers.h>
#endif
#include <stdio.h>
#include <string.h>
#if !defined(__SVR4) && !defined(__svr4__)
# include <strings.h>
#endif
#include <sys/types.h>
#include <sys/time.h>
#include <sys/param.h>
#include <sys/file.h>
#if defined(STATETOP)
# if defined(_BSDI_VERSION)
# undef STATETOP)
# endif
# if defined(__FreeBSD__) && \
(!defined(__FreeBSD_version) || (__FreeBSD_version < 430000))
# undef STATETOP
# endif
# if defined(__NetBSD_Version__)
# if (__NetBSD_Version__ < 105000000)
# undef STATETOP
# else
# include <poll.h>
# define USE_POLL
# endif
# endif
# if defined(sun)
# if defined(__svr4__) || defined(__SVR4)
# include <sys/select.h>
# else
# undef STATETOP /* NOT supported on SunOS4 */
# endif
# endif
#endif
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <stddef.h>
#include <nlist.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <net/if.h>
#if __FreeBSD_version >= 300000
# include <net/if_var.h>
#endif
#include <netdb.h>
#include <arpa/nameser.h>
#include <resolv.h>
#include <netinet/tcp.h>
#if defined(STATETOP) && !defined(linux)
# include <netinet/ip_var.h>
# include <netinet/tcp_fsm.h>
#endif
#include "netinet/ip_compat.h"
#include "netinet/ip_fil.h"
#include "ipf.h"
#include "netinet/ip_nat.h"
#include "netinet/ip_frag.h"
#include "netinet/ip_state.h"
#include "netinet/ip_proxy.h"
#include "netinet/ip_auth.h"
#ifdef STATETOP
# include "netinet/ipl.h"
# include <ctype.h>
# if SOLARIS || defined(__NetBSD__) || defined(_BSDI_VERSION) || \
defined(__sgi)
# ifdef ERR
# undef ERR
# endif
# include <curses.h>
# else /* SOLARIS */
# include <ncurses.h>
# endif /* SOLARIS */
#endif /* STATETOP */
#include "kmem.h"
#if defined(__NetBSD__) || (__OpenBSD__)
# include <paths.h>
#endif
#if !defined(lint)
static const char sccsid[] = "@(#)fils.c 1.21 4/20/96 (C) 1993-2000 Darren Reed";
static const char rcsid[] = "@(#)$Id: fils.c,v 2.21.2.40 2002/12/06 11:40:20 darrenr Exp $";
#endif
extern char *optarg;
extern int optind;
#define PRINTF (void)printf
#define FPRINTF (void)fprintf
#define F_IN 0
#define F_OUT 1
#define F_ACIN 2
#define F_ACOUT 3
static char *filters[4] = { "ipfilter(in)", "ipfilter(out)",
"ipacct(in)", "ipacct(out)" };
int opts = 0;
int use_inet6 = 0;
int live_kernel = 1;
#ifdef STATETOP
#define STSTRSIZE 80
#define STGROWSIZE 16
#define HOSTNMLEN 40
#define STSORT_PR 0
#define STSORT_PKTS 1
#define STSORT_BYTES 2
#define STSORT_TTL 3
#define STSORT_SRCIP 4
#define STSORT_DSTIP 5
#define STSORT_MAX STSORT_DSTIP
#define STSORT_DEFAULT STSORT_BYTES
typedef struct statetop {
union i6addr st_src;
union i6addr st_dst;
u_short st_sport;
u_short st_dport;
u_char st_p;
u_char st_state[2];
U_QUAD_T st_pkts;
U_QUAD_T st_bytes;
u_long st_age;
} statetop_t;
#endif
extern int main __P((int, char *[]));
static void showstats __P((friostat_t *, u_32_t));
static void showfrstates __P((ipfrstat_t *));
static void showlist __P((friostat_t *));
static void showipstates __P((ips_stat_t *));
static void showauthstates __P((fr_authstat_t *));
static void showgroups __P((friostat_t *));
static void Usage __P((char *));
static void printlist __P((frentry_t *));
static void parse_ipportstr __P((const char *, struct in_addr *, int *));
static int ipfstate_live __P((char *, friostat_t **, ips_stat_t **,
ipfrstat_t **, fr_authstat_t **, u_32_t *));
static void ipfstate_dead __P((char *, friostat_t **, ips_stat_t **,
ipfrstat_t **, fr_authstat_t **, u_32_t *));
#ifdef STATETOP
static void topipstates __P((struct in_addr, struct in_addr, int, int, int, int, int));
static char *ttl_to_string __P((long));
static int sort_p __P((const void *, const void *));
static int sort_pkts __P((const void *, const void *));
static int sort_bytes __P((const void *, const void *));
static int sort_ttl __P((const void *, const void *));
static int sort_srcip __P((const void *, const void *));
static int sort_dstip __P((const void *, const void *));
#endif
#if SOLARIS
void showqiflist __P((char *));
#endif
static void Usage(name)
char *name;
{
#ifdef USE_INET6
fprintf(stderr, "Usage: %s [-6aAfhIinosv] [-d <device>]\n", name);
#else
fprintf(stderr, "Usage: %s [-aAfhIinosv] [-d <device>]\n", name);
#endif
fprintf(stderr, "\t\t[-M corefile] [-N symbol-list]\n");
fprintf(stderr, " %s -t [-S source address] [-D destination address] [-P protocol] [-T refreshtime] [-C] [-d <device>]\n", name);
exit(1);
}
int main(argc,argv)
int argc;
char *argv[];
{
fr_authstat_t frauthst;
fr_authstat_t *frauthstp = &frauthst;
friostat_t fio;
friostat_t *fiop = &fio;
ips_stat_t ipsst;
ips_stat_t *ipsstp = &ipsst;
ipfrstat_t ifrst;
ipfrstat_t *ifrstp = &ifrst;
char *device = IPL_NAME, *memf = NULL;
char *kern = NULL;
int c, myoptind;
struct protoent *proto;
int protocol = -1; /* -1 = wild card for any protocol */
int refreshtime = 1; /* default update time */
int sport = -1; /* -1 = wild card for any source port */
int dport = -1; /* -1 = wild card for any dest port */
int topclosed = 0; /* do not show closed tcp sessions */
struct in_addr saddr, daddr;
u_32_t frf;
saddr.s_addr = INADDR_ANY; /* default any source addr */
daddr.s_addr = INADDR_ANY; /* default any dest addr */
/*
* Parse these two arguments now lest there be any buffer overflows
* in the parsing of the rest.
*/
myoptind = optind;
while ((c = getopt(argc, argv, "6aACfghIilnoqstvd:D:M:N:P:S:T:")) != -1)
switch (c)
{
case 'M' :
memf = optarg;
live_kernel = 0;
break;
case 'N' :
kern = optarg;
live_kernel = 0;
break;
}
optind = myoptind;
if (kern != NULL || memf != NULL)
{
(void)setuid(getuid());
(void)setgid(getgid());
}
if (openkmem(kern, memf) == -1)
exit(-1);
(void)setuid(getuid());
(void)setgid(getgid());
while ((c = getopt(argc, argv, "6aACfghIilnoqstvd:D:M:N:P:S:T:")) != -1)
{
switch (c)
{
#ifdef USE_INET6
case '6' :
use_inet6 = 1;
break;
#endif
case 'a' :
opts |= OPT_ACCNT|OPT_SHOWLIST;
break;
case 'A' :
device = IPAUTH_NAME;
opts |= OPT_AUTHSTATS;
break;
case 'C' :
topclosed = 1;
break;
case 'd' :
device = optarg;
break;
case 'D' :
parse_ipportstr(optarg, &daddr, &dport);
break;
case 'f' :
opts |= OPT_FRSTATES;
break;
case 'g' :
opts |= OPT_GROUPS;
break;
case 'h' :
opts |= OPT_HITS;
break;
case 'i' :
opts |= OPT_INQUE|OPT_SHOWLIST;
break;
case 'I' :
opts |= OPT_INACTIVE;
break;
case 'l' :
opts |= OPT_SHOWLIST;
break;
case 'M' :
break;
case 'N' :
break;
case 'n' :
opts |= OPT_SHOWLINENO;
break;
case 'o' :
opts |= OPT_OUTQUE|OPT_SHOWLIST;
break;
case 'P' :
if ((proto = getprotobyname(optarg)) != NULL) {
protocol = proto->p_proto;
} else if (!sscanf(optarg, "%ud", &protocol) ||
(protocol < 0)) {
fprintf(stderr, "%s : Invalid protocol: %s\n",
argv[0], optarg);
exit(-2);
}
break;
case 'q' :
#if SOLARIS
showqiflist(kern);
exit(0);
break;
#else
fprintf(stderr, "-q only availble on Solaris\n");
exit(1);
break;
#endif
case 's' :
opts |= OPT_IPSTATES;
break;
case 'S' :
parse_ipportstr(optarg, &saddr, &sport);
break;
case 't' :
#ifdef STATETOP
opts |= OPT_STATETOP;
break;
#else
fprintf(stderr,
"%s : state top facility not compiled in\n",
argv[0]);
exit(-2);
#endif
case 'T' :
if (!sscanf(optarg, "%d", &refreshtime) ||
(refreshtime <= 0)) {
fprintf(stderr,
"%s : Invalid refreshtime < 1 : %s\n",
argv[0], optarg);
exit(-2);
}
break;
case 'v' :
opts |= OPT_VERBOSE;
break;
default :
Usage(argv[0]);
break;
}
}
if (live_kernel == 1) {
bzero((char *)&fio, sizeof(fio));
bzero((char *)&ipsst, sizeof(ipsst));
bzero((char *)&ifrst, sizeof(ifrst));
ipfstate_live(device, &fiop, &ipsstp, &ifrstp,
&frauthstp, &frf);
} else
ipfstate_dead(kern, &fiop, &ipsstp, &ifrstp, &frauthstp, &frf);
if (opts & OPT_IPSTATES) {
showipstates(ipsstp);
} else if (opts & OPT_SHOWLIST) {
showlist(fiop);
if ((opts & OPT_OUTQUE) && (opts & OPT_INQUE)){
opts &= ~OPT_OUTQUE;
showlist(fiop);
}
} else {
if (opts & OPT_FRSTATES)
showfrstates(ifrstp);
#ifdef STATETOP
else if (opts & OPT_STATETOP)
topipstates(saddr, daddr, sport, dport,
protocol, refreshtime, topclosed);
#endif
else if (opts & OPT_AUTHSTATS)
showauthstates(frauthstp);
else if (opts & OPT_GROUPS)
showgroups(fiop);
else
showstats(fiop, frf);
}
return 0;
}
/*
* Fill in the stats structures from the live kernel, using a combination
* of ioctl's and copying directly from kernel memory.
*/
int ipfstate_live(device, fiopp, ipsstpp, ifrstpp, frauthstpp, frfp)
char *device;
friostat_t **fiopp;
ips_stat_t **ipsstpp;
ipfrstat_t **ifrstpp;
fr_authstat_t **frauthstpp;
u_32_t *frfp;
{
int fd;
if ((fd = open(device, O_RDONLY)) < 0) {
perror("open");
exit(-1);
}
if (!(opts & OPT_AUTHSTATS) && ioctl(fd, SIOCGETFS, fiopp) == -1) {
perror("ioctl(ipf:SIOCGETFS)");
exit(-1);
}
if ((opts & OPT_IPSTATES)) {
int sfd = open(IPL_STATE, O_RDONLY);
if (sfd == -1) {
perror("open");
exit(-1);
}
if ((ioctl(sfd, SIOCGETFS, ipsstpp) == -1)) {
perror("ioctl(state:SIOCGETFS)");
exit(-1);
}
close(sfd);
}
if ((opts & OPT_FRSTATES) && (ioctl(fd, SIOCGFRST, ifrstpp) == -1)) {
perror("ioctl(SIOCGFRST)");
exit(-1);
}
if (opts & OPT_VERBOSE)
PRINTF("opts %#x name %s\n", opts, device);
if ((opts & OPT_AUTHSTATS) &&
(ioctl(fd, SIOCATHST, frauthstpp) == -1)) {
perror("ioctl(SIOCATHST)");
exit(-1);
}
if (ioctl(fd, SIOCGETFF, frfp) == -1)
perror("ioctl(SIOCGETFF)");
return fd;
}
/*
* Build up the stats structures from data held in the "core" memory.
* This is mainly useful when looking at data in crash dumps and ioctl's
* just won't work any more.
*/
void ipfstate_dead(kernel, fiopp, ipsstpp, ifrstpp, frauthstpp, frfp)
char *kernel;
friostat_t **fiopp;
ips_stat_t **ipsstpp;
ipfrstat_t **ifrstpp;
fr_authstat_t **frauthstpp;
u_32_t *frfp;
{
static fr_authstat_t frauthst, *frauthstp;
static ips_stat_t ipsst, *ipsstp;
static ipfrstat_t ifrst, *ifrstp;
static friostat_t fio, *fiop;
void *rules[2][2];
struct nlist deadlist[42] = {
{ "fr_authstats" }, /* 0 */
{ "fae_list" },
{ "ipauth" },
{ "fr_authlist" },
{ "fr_authstart" },
{ "fr_authend" }, /* 5 */
{ "fr_authnext" },
{ "fr_auth" },
{ "fr_authused" },
{ "fr_authsize" },
{ "fr_defaultauthage" }, /* 10 */
{ "fr_authpkts" },
{ "fr_auth_lock" },
{ "frstats" },
{ "ips_stats" },
{ "ips_num" }, /* 15 */
{ "ips_wild" },
{ "ips_list" },
{ "ips_table" },
{ "fr_statemax" },
{ "fr_statesize" }, /* 20 */
{ "fr_state_doflush" },
{ "fr_state_lock" },
{ "ipfr_heads" },
{ "ipfr_nattab" },
{ "ipfr_stats" }, /* 25 */
{ "ipfr_inuse" },
{ "fr_ipfrttl" },
{ "fr_frag_lock" },
{ "ipfr_timer_id" },
{ "fr_nat_lock" }, /* 30 */
{ "ipfilter" },
{ "ipfilter6" },
{ "ipacct" },
{ "ipacct6" },
{ "ipl_frouteok" }, /* 35 */
{ "fr_running" },
{ "ipfgroups" },
{ "fr_active" },
{ "fr_pass" },
{ "fr_flags" }, /* 40 */
{ NULL }
};
frauthstp = &frauthst;
ipsstp = &ipsst;
ifrstp = &ifrst;
fiop = &fio;
*frfp = 0;
*fiopp = fiop;
*ipsstpp = ipsstp;
*ifrstpp = ifrstp;
*frauthstpp = frauthstp;
bzero((char *)fiop, sizeof(*fiop));
bzero((char *)ipsstp, sizeof(*ipsstp));
bzero((char *)ifrstp, sizeof(*ifrstp));
bzero((char *)frauthstp, sizeof(*frauthstp));
if (nlist(kernel, deadlist) == -1) {
fprintf(stderr, "nlist error\n");
return;
}
/*
* This is for SIOCGETFF.
*/
kmemcpy((char *)frfp, (u_long)deadlist[40].n_value, sizeof(*frfp));
/*
* f_locks is a combination of the lock variable from each part of
* ipfilter (state, auth, nat, fragments).
*/
kmemcpy((char *)fiop, (u_long)deadlist[13].n_value, sizeof(*fiop));
kmemcpy((char *)&fiop->f_locks[0], (u_long)deadlist[22].n_value,
sizeof(fiop->f_locks[0]));
kmemcpy((char *)&fiop->f_locks[0], (u_long)deadlist[30].n_value,
sizeof(fiop->f_locks[1]));
kmemcpy((char *)&fiop->f_locks[2], (u_long)deadlist[28].n_value,
sizeof(fiop->f_locks[2]));
kmemcpy((char *)&fiop->f_locks[3], (u_long)deadlist[12].n_value,
sizeof(fiop->f_locks[3]));
/*
* Get pointers to each list of rules (active, inactive, in, out)
*/
kmemcpy((char *)&rules, (u_long)deadlist[31].n_value, sizeof(rules));
fiop->f_fin[0] = rules[0][0];
fiop->f_fin[1] = rules[0][1];
fiop->f_fout[0] = rules[1][0];
fiop->f_fout[1] = rules[1][1];
/*
* Same for IPv6, except make them null if support for it is not
* being compiled in.
*/
#ifdef USE_INET6
kmemcpy((char *)&rules, (u_long)deadlist[32].n_value, sizeof(rules));
fiop->f_fin6[0] = rules[0][0];
fiop->f_fin6[1] = rules[0][1];
fiop->f_fout6[0] = rules[1][0];
fiop->f_fout6[1] = rules[1][1];
#else
fiop->f_fin6[0] = NULL;
fiop->f_fin6[1] = NULL;
fiop->f_fout6[0] = NULL;
fiop->f_fout6[1] = NULL;
#endif
/*
* Now get accounting rules pointers.
*/
kmemcpy((char *)&rules, (u_long)deadlist[33].n_value, sizeof(rules));
fiop->f_acctin[0] = rules[0][0];
fiop->f_acctin[1] = rules[0][1];
fiop->f_acctout[0] = rules[1][0];
fiop->f_acctout[1] = rules[1][1];
#ifdef USE_INET6
kmemcpy((char *)&rules, (u_long)deadlist[34].n_value, sizeof(rules));
fiop->f_acctin6[0] = rules[0][0];
fiop->f_acctin6[1] = rules[0][1];
fiop->f_acctout6[0] = rules[1][0];
fiop->f_acctout6[1] = rules[1][1];
#else
fiop->f_acctin6[0] = NULL;
fiop->f_acctin6[1] = NULL;
fiop->f_acctout6[0] = NULL;
fiop->f_acctout6[1] = NULL;
#endif
/*
* A collection of "global" variables used inside the kernel which
* are all collected in friostat_t via ioctl.
*/
kmemcpy((char *)&fiop->f_froute, (u_long)deadlist[35].n_value,
sizeof(fiop->f_froute));
kmemcpy((char *)&fiop->f_running, (u_long)deadlist[36].n_value,
sizeof(fiop->f_running));
kmemcpy((char *)&fiop->f_groups, (u_long)deadlist[37].n_value,
sizeof(fiop->f_groups));
kmemcpy((char *)&fiop->f_active, (u_long)deadlist[38].n_value,
sizeof(fiop->f_active));
kmemcpy((char *)&fiop->f_defpass, (u_long)deadlist[39].n_value,
sizeof(fiop->f_defpass));
/*
* Build up the state information stats structure.
*/
kmemcpy((char *)ipsstp, (u_long)deadlist[14].n_value, sizeof(*ipsstp));
kmemcpy((char *)&ipsstp->iss_active, (u_long)deadlist[15].n_value,
sizeof(ipsstp->iss_active));
ipsstp->iss_table = (void *)deadlist[18].n_value;
ipsstp->iss_list = (void *)deadlist[17].n_value;
/*
* Build up the authentiation information stats structure.
*/
kmemcpy((char *)frauthstp, (u_long)deadlist[0].n_value,
sizeof(*frauthstp));
frauthstp->fas_faelist = (void *)deadlist[1].n_value;
/*
* Build up the fragment information stats structure.
*/
kmemcpy((char *)ifrstp, (u_long)deadlist[25].n_value,
sizeof(*ifrstp));
ifrstp->ifs_table = (void *)deadlist[23].n_value;
ifrstp->ifs_nattab = (void *)deadlist[24].n_value;
kmemcpy((char *)&ifrstp->ifs_inuse, (u_long)deadlist[26].n_value,
sizeof(ifrstp->ifs_inuse));
}
/*
* Display the kernel stats for packets blocked and passed and other
* associated running totals which are kept.
*/
static void showstats(fp, frf)
struct friostat *fp;
u_32_t frf;
{
#if SOLARIS
PRINTF("dropped packets:\tin %lu\tout %lu\n",
fp->f_st[0].fr_drop, fp->f_st[1].fr_drop);
PRINTF("non-data packets:\tin %lu\tout %lu\n",
fp->f_st[0].fr_notdata, fp->f_st[1].fr_notdata);
PRINTF("no-data packets:\tin %lu\tout %lu\n",
fp->f_st[0].fr_nodata, fp->f_st[1].fr_nodata);
PRINTF("non-ip packets:\t\tin %lu\tout %lu\n",
fp->f_st[0].fr_notip, fp->f_st[1].fr_notip);
PRINTF(" bad packets:\t\tin %lu\tout %lu\n",
fp->f_st[0].fr_bad, fp->f_st[1].fr_bad);
PRINTF("copied messages:\tin %lu\tout %lu\n",
fp->f_st[0].fr_copy, fp->f_st[1].fr_copy);
#endif
#ifdef USE_INET6
PRINTF(" IPv6 packets:\t\tin %lu out %lu\n",
fp->f_st[0].fr_ipv6[0], fp->f_st[0].fr_ipv6[1]);
#endif
PRINTF(" input packets:\t\tblocked %lu passed %lu nomatch %lu",
fp->f_st[0].fr_block, fp->f_st[0].fr_pass,
fp->f_st[0].fr_nom);
PRINTF(" counted %lu short %lu\n",
fp->f_st[0].fr_acct, fp->f_st[0].fr_short);
PRINTF("output packets:\t\tblocked %lu passed %lu nomatch %lu",
fp->f_st[1].fr_block, fp->f_st[1].fr_pass,
fp->f_st[1].fr_nom);
PRINTF(" counted %lu short %lu\n",
fp->f_st[1].fr_acct, fp->f_st[1].fr_short);
PRINTF(" input packets logged:\tblocked %lu passed %lu\n",
fp->f_st[0].fr_bpkl, fp->f_st[0].fr_ppkl);
PRINTF("output packets logged:\tblocked %lu passed %lu\n",
fp->f_st[1].fr_bpkl, fp->f_st[1].fr_ppkl);
PRINTF(" packets logged:\tinput %lu output %lu\n",
fp->f_st[0].fr_pkl, fp->f_st[1].fr_pkl);
PRINTF(" log failures:\t\tinput %lu output %lu\n",
fp->f_st[0].fr_skip, fp->f_st[1].fr_skip);
PRINTF("fragment state(in):\tkept %lu\tlost %lu\n",
fp->f_st[0].fr_nfr, fp->f_st[0].fr_bnfr);
PRINTF("fragment state(out):\tkept %lu\tlost %lu\n",
fp->f_st[1].fr_nfr, fp->f_st[1].fr_bnfr);
PRINTF("packet state(in):\tkept %lu\tlost %lu\n",
fp->f_st[0].fr_ads, fp->f_st[0].fr_bads);
PRINTF("packet state(out):\tkept %lu\tlost %lu\n",
fp->f_st[1].fr_ads, fp->f_st[1].fr_bads);
PRINTF("ICMP replies:\t%lu\tTCP RSTs sent:\t%lu\n",
fp->f_st[0].fr_ret, fp->f_st[1].fr_ret);
PRINTF("Invalid source(in):\t%lu\n", fp->f_st[0].fr_badsrc);
PRINTF("Result cache hits(in):\t%lu\t(out):\t%lu\n",
fp->f_st[0].fr_chit, fp->f_st[1].fr_chit);
PRINTF("IN Pullups succeeded:\t%lu\tfailed:\t%lu\n",
fp->f_st[0].fr_pull[0], fp->f_st[0].fr_pull[1]);
PRINTF("OUT Pullups succeeded:\t%lu\tfailed:\t%lu\n",
fp->f_st[1].fr_pull[0], fp->f_st[1].fr_pull[1]);
PRINTF("Fastroute successes:\t%lu\tfailures:\t%lu\n",
fp->f_froute[0], fp->f_froute[1]);
PRINTF("TCP cksum fails(in):\t%lu\t(out):\t%lu\n",
fp->f_st[0].fr_tcpbad, fp->f_st[1].fr_tcpbad);
PRINTF("Packet log flags set: (%#x)\n", frf);
if (frf & FF_LOGPASS)
PRINTF("\tpackets passed through filter\n");
if (frf & FF_LOGBLOCK)
PRINTF("\tpackets blocked by filter\n");
if (frf & FF_LOGNOMATCH)
PRINTF("\tpackets not matched by filter\n");
if (!frf)
PRINTF("\tnone\n");
}
/*
* Print out a list of rules from the kernel, starting at the one passed.
*/
static void printlist(fp)
frentry_t *fp;
{
struct frentry fb;
int n;
for (n = 1; fp; n++) {
if (kmemcpy((char *)&fb, (u_long)fp, sizeof(fb)) == -1) {
perror("kmemcpy");
return;
}
fp = &fb;
if (opts & OPT_OUTQUE)
fp->fr_flags |= FR_OUTQUE;
if (opts & (OPT_HITS|OPT_VERBOSE))
#ifdef USE_QUAD_T
PRINTF("%qu ", (unsigned long long) fp->fr_hits);
#else
PRINTF("%lu ", fp->fr_hits);
#endif
if (opts & (OPT_ACCNT|OPT_VERBOSE))
#ifdef USE_QUAD_T
PRINTF("%qu ", (unsigned long long) fp->fr_bytes);
#else
PRINTF("%lu ", fp->fr_bytes);
#endif
if (opts & OPT_SHOWLINENO)
PRINTF("@%d ", n);
printfr(fp);
if (opts & OPT_VERBOSE)
binprint(fp);
if (fp->fr_grp)
printlist(fp->fr_grp);
fp = fp->fr_next;
}
}
/*
* print out all of the asked for rule sets, using the stats struct as
* the base from which to get the pointers.
*/
static void showlist(fiop)
struct friostat *fiop;
{
struct frentry *fp = NULL;
int i, set;
set = fiop->f_active;
if (opts & OPT_INACTIVE)
set = 1 - set;
if (opts & OPT_ACCNT) {
#ifdef USE_INET6
if ((use_inet6) && (opts & OPT_OUTQUE)) {
i = F_ACOUT;
fp = (struct frentry *)fiop->f_acctout6[set];
} else if ((use_inet6) && (opts & OPT_INQUE)) {
i = F_ACIN;
fp = (struct frentry *)fiop->f_acctin6[set];
} else
#endif
if (opts & OPT_OUTQUE) {
i = F_ACOUT;
fp = (struct frentry *)fiop->f_acctout[set];
} else if (opts & OPT_INQUE) {
i = F_ACIN;
fp = (struct frentry *)fiop->f_acctin[set];
} else {
FPRINTF(stderr, "No -i or -o given with -a\n");
return;
}
} else {
#ifdef USE_INET6
if ((use_inet6) && (opts & OPT_OUTQUE)) {
i = F_OUT;
fp = (struct frentry *)fiop->f_fout6[set];
} else if ((use_inet6) && (opts & OPT_INQUE)) {
i = F_IN;
fp = (struct frentry *)fiop->f_fin6[set];
} else
#endif
if (opts & OPT_OUTQUE) {
i = F_OUT;
fp = (struct frentry *)fiop->f_fout[set];
} else if (opts & OPT_INQUE) {
i = F_IN;
fp = (struct frentry *)fiop->f_fin[set];
} else
return;
}
if (opts & OPT_VERBOSE)
FPRINTF(stderr, "showlist:opts %#x i %d\n", opts, i);
if (opts & OPT_VERBOSE)
PRINTF("fp %p set %d\n", fp, set);
if (fp == NULL) {
FPRINTF(stderr, "empty list for %s%s\n",
(opts & OPT_INACTIVE) ? "inactive " : "", filters[i]);
return;
}
printlist(fp);
}
/*
* Display ipfilter stateful filtering information
*/
static void showipstates(ipsp)
ips_stat_t *ipsp;
{
ipstate_t *istab[IPSTATE_SIZE];
/*
* If a list of states hasn't been asked for, only print out stats
*/
if (!(opts & OPT_SHOWLIST)) {
PRINTF("IP states added:\n\t%lu TCP\n\t%lu UDP\n\t%lu ICMP\n",
ipsp->iss_tcp, ipsp->iss_udp, ipsp->iss_icmp);
PRINTF("\t%lu hits\n\t%lu misses\n", ipsp->iss_hits,
ipsp->iss_miss);
PRINTF("\t%lu maximum\n\t%lu no memory\n\t%lu bkts in use\n",
ipsp->iss_max, ipsp->iss_nomem, ipsp->iss_inuse);
PRINTF("\t%lu active\n\t%lu expired\n\t%lu closed\n",
ipsp->iss_active, ipsp->iss_expire, ipsp->iss_fin);
return;
}
if (kmemcpy((char *)istab, (u_long)ipsp->iss_table, sizeof(istab)))
return;
/*
* Print out all the state information currently held in the kernel.
*/
while (ipsp->iss_list != NULL) {
ipsp->iss_list = printstate(ipsp->iss_list, opts);
}
}
#if SOLARIS
/*
* Displays the list of interfaces of which IPFilter has taken control in
* Solaris.
*/
void showqiflist(kern)
char *kern;
{
struct nlist qifnlist[2] = {
{ "qif_head" },
{ NULL }
};
qif_t qif, *qf;
ill_t ill;
if (kern == NULL)
kern = "/dev/ksyms";
if (nlist(kern, qifnlist) == -1) {
fprintf(stderr, "nlist error\n");
return;
}
printf("List of interfaces bound by IPFilter:\n");
if (kmemcpy((char *)&qf, (u_long)qifnlist[0].n_value, sizeof(qf)))
return;
while (qf) {
if (kmemcpy((char *)&qif, (u_long)qf, sizeof(qif)))
break;
if (kmemcpy((char *)&ill, (u_long)qif.qf_ill, sizeof(ill)))
ill.ill_ppa = -1;
printf("Name: %-8s Header Length: %2d SAP: %s (%04x) PPA %d",
qif.qf_name, qif.qf_hl,
#ifdef IP6_DL_SAP
(qif.qf_sap == IP6_DL_SAP) ? "IPv6" : "IPv4"
#else
"IPv4"
#endif
, qif.qf_sap, ill.ill_ppa);
printf(" %ld %ld", qif.qf_incnt, qif.qf_outcnt);
qf = qif.qf_next;
putchar('\n');
}
}
#endif
#ifdef STATETOP
static void topipstates(saddr, daddr, sport, dport, protocol,
refreshtime, topclosed)
struct in_addr saddr;
struct in_addr daddr;
int sport;
int dport;
int protocol;
int refreshtime;
int topclosed;
{
char str1[STSTRSIZE], str2[STSTRSIZE], str3[STSTRSIZE], str4[STSTRSIZE];
int maxtsentries = 0, reverse = 0, sorting = STSORT_DEFAULT;
int i, j, sfd, winx, tsentry, maxx, maxy, redraw = 0;
ipstate_t *istab[IPSTATE_SIZE], ips;
ips_stat_t ipsst, *ipsstp = &ipsst;
statetop_t *tstable = NULL, *tp;
char hostnm[HOSTNMLEN];
struct protoent *proto;
int c = 0;
time_t t;
#ifdef USE_POLL
struct pollfd set[1];
#else
struct timeval selecttimeout;
fd_set readfd;
#endif
/* open state device */
if ((sfd = open(IPL_STATE, O_RDONLY)) == -1) {
perror("open");
exit(-1);
}
/* init ncurses stuff */
initscr();
cbreak();
noecho();
/* init hostname */
gethostname(hostnm, sizeof(hostnm) - 1);
hostnm[sizeof(hostnm) - 1] = '\0';
/* repeat until user aborts */
while ( 1 ) {
/* get state table */
bzero((char *)&ipsst, sizeof(&ipsst));
if ((ioctl(sfd, SIOCGETFS, &ipsstp) == -1)) {
perror("ioctl(SIOCGETFS)");
exit(-1);
}
if (kmemcpy((char *)istab, (u_long)ipsstp->iss_table,
sizeof(ips)))
return;
/* clear the history */
tsentry = -1;
/* read the state table and store in tstable */
while (ipsstp->iss_list) {
if (kmemcpy((char *)&ips, (u_long)ipsstp->iss_list,
sizeof(ips)))
break;
ipsstp->iss_list = ips.is_next;
if (((saddr.s_addr == INADDR_ANY) ||
(saddr.s_addr == ips.is_saddr)) &&
((daddr.s_addr == INADDR_ANY) ||
(daddr.s_addr == ips.is_daddr)) &&
((protocol < 0) || (protocol == ips.is_p)) &&
(((ips.is_p != IPPROTO_TCP) &&
(ips.is_p != IPPROTO_UDP)) ||
(((sport < 0) ||
(htons(sport) == ips.is_sport)) &&
((dport < 0) ||
(htons(dport) == ips.is_dport)))) &&
(topclosed || (ips.is_p != IPPROTO_TCP) ||
(ips.is_state[0] < TCPS_LAST_ACK) ||
(ips.is_state[1] < TCPS_LAST_ACK))) {
/*
* if necessary make room for this state
* entry
*/
tsentry++;
if (!maxtsentries ||
(tsentry == maxtsentries)) {
maxtsentries += STGROWSIZE;
tstable = realloc(tstable, maxtsentries * sizeof(statetop_t));
if (!tstable) {
perror("malloc");
exit(-1);
}
}
/* fill structure */
tp = tstable + tsentry;
tp->st_src = ips.is_src;
tp->st_dst = ips.is_dst;
tp->st_p = ips.is_p;
tp->st_state[0] = ips.is_state[0];
tp->st_state[1] = ips.is_state[1];
tp->st_pkts = ips.is_pkts;
tp->st_bytes = ips.is_bytes;
tp->st_age = ips.is_age;
if ((ips.is_p == IPPROTO_TCP) ||
(ips.is_p == IPPROTO_UDP)) {
tp->st_sport = ips.is_sport;
tp->st_dport = ips.is_dport;
}
}
}
/* sort the array */
if (tsentry != -1)
switch (sorting)
{
case STSORT_PR:
qsort(tstable, tsentry + 1,
sizeof(statetop_t), sort_p);
break;
case STSORT_PKTS:
qsort(tstable, tsentry + 1,
sizeof(statetop_t), sort_pkts);
break;
case STSORT_BYTES:
qsort(tstable, tsentry + 1,
sizeof(statetop_t), sort_bytes);
break;
case STSORT_TTL:
qsort(tstable, tsentry + 1,
sizeof(statetop_t), sort_ttl);
break;
case STSORT_SRCIP:
qsort(tstable, tsentry + 1,
sizeof(statetop_t), sort_srcip);
break;
case STSORT_DSTIP:
qsort(tstable, tsentry + 1,
sizeof(statetop_t), sort_dstip);
break;
default:
break;
}
/* print title */
erase();
getmaxyx(stdscr, maxy, maxx);
attron(A_BOLD);
winx = 0;
move(winx,0);
sprintf(str1, "%s - %s - state top", hostnm, IPL_VERSION);
for (j = 0 ; j < (maxx - 8 - strlen(str1)) / 2; j++)
printw(" ");
printw("%s", str1);
attroff(A_BOLD);
/* just for fun add a clock */
move(winx, maxx - 8);
t = time(NULL);
strftime(str1, 80, "%T", localtime(&t));
printw("%s\n", str1);
/*
* print the display filters, this is placed in the loop,
* because someday I might add code for changing these
* while the programming is running :-)
*/
if (sport >= 0)
sprintf(str1, "%s,%d", inet_ntoa(saddr), sport);
else
sprintf(str1, "%s", inet_ntoa(saddr));
if (dport >= 0)
sprintf(str2, "%s,%d", inet_ntoa(daddr), dport);
else
sprintf(str2, "%s", inet_ntoa(daddr));
if (protocol < 0)
strcpy(str3, "any");
else if ((proto = getprotobynumber(protocol)) != NULL)
sprintf(str3, "%s", proto->p_name);
else
sprintf(str3, "%d", protocol);
switch (sorting)
{
case STSORT_PR:
sprintf(str4, "proto");
break;
case STSORT_PKTS:
sprintf(str4, "# pkts");
break;
case STSORT_BYTES:
sprintf(str4, "# bytes");
break;
case STSORT_TTL:
sprintf(str4, "ttl");
break;
case STSORT_SRCIP:
sprintf(str4, "srcip");
break;
case STSORT_DSTIP:
sprintf(str4, "dstip");
break;
default:
sprintf(str4, "unknown");
break;
}
if (reverse)
strcat(str4, " (reverse)");
winx += 2;
move(winx,0);
printw("Src = %s Dest = %s Proto = %s Sorted by = %s\n\n",
str1, str2, str3, str4);
/* print column description */
winx += 2;
move(winx,0);
attron(A_BOLD);
printw("%-21s %-21s %3s %4s %7s %9s %9s\n", "Source IP",
"Destination IP", "ST", "PR", "#pkts", "#bytes", "ttl");
attroff(A_BOLD);
/* print all the entries */
tp = tstable;
if (reverse)
tp += tsentry;
if (tsentry > maxy - 6)
tsentry = maxy - 6;
for (i = 0; i <= tsentry; i++) {
/* print src/dest and port */
if ((tp->st_p == IPPROTO_TCP) ||
(tp->st_p == IPPROTO_UDP)) {
sprintf(str1, "%s,%hu",
inet_ntoa(tp->st_src.in4),
ntohs(tp->st_sport));
sprintf(str2, "%s,%hu",
inet_ntoa(tp->st_dst.in4),
ntohs(tp->st_dport));
} else {
sprintf(str1, "%s", inet_ntoa(tp->st_src.in4));
sprintf(str2, "%s", inet_ntoa(tp->st_dst.in4));
}
winx++;
move(winx, 0);
printw("%-21s %-21s", str1, str2);
/* print state */
sprintf(str1, "%X/%X", tp->st_state[0],
tp->st_state[1]);
printw(" %3s", str1);
/* print proto */
proto = getprotobynumber(tp->st_p);
if (proto) {
strncpy(str1, proto->p_name, 4);
str1[4] = '\0';
} else {
sprintf(str1, "%d", tp->st_p);
}
printw(" %4s", str1);
/* print #pkt/#bytes */
#ifdef USE_QUAD_T
printw(" %7qu %9qu", (unsigned long long) tp->st_pkts,
(unsigned long long) tp->st_bytes);
#else
printw(" %7lu %9lu", tp->st_pkts, tp->st_bytes);
#endif
printw(" %9s", ttl_to_string(tp->st_age));
if (reverse)
tp--;
else
tp++;
}
/* screen data structure is filled, now update the screen */
if (redraw)
clearok(stdscr,1);
refresh();
if (redraw) {
clearok(stdscr,0);
redraw = 0;
}
/* wait for key press or a 1 second time out period */
#ifdef USE_POLL
set[0].fd = 0;
set[0].events = POLLIN;
poll(set, 1, refreshtime * 1000);
/* if key pressed, read all waiting keys */
if (set[0].revents & POLLIN)
#else
selecttimeout.tv_sec = refreshtime;
selecttimeout.tv_usec = 0;
FD_ZERO(&readfd);
FD_SET(0, &readfd);
select(1, &readfd, NULL, NULL, &selecttimeout);
/* if key pressed, read all waiting keys */
if (FD_ISSET(0, &readfd))
#endif
{
c = wgetch(stdscr);
if (c == ERR)
continue;
if (isalpha(c) && isupper(c))
c = tolower(c);
if (c == 'l') {
redraw = 1;
} else if (c == 'q') {
break; /* exits while() loop */
} else if (c == 'r') {
reverse = !reverse;
} else if (c == 's') {
sorting++;
if (sorting > STSORT_MAX)
sorting = 0;
}
}
} /* while */
close(sfd);
printw("\n");
nocbreak();
endwin();
}
#endif
/*
* Show fragment cache information that's held in the kernel.
*/
static void showfrstates(ifsp)
ipfrstat_t *ifsp;
{
struct ipfr *ipfrtab[IPFT_SIZE], ifr;
frentry_t fr;
int i;
/*
* print out the numeric statistics
*/
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;
/*
* Print out the contents (if any) of the fragment cache table.
*/
for (i = 0; i < IPFT_SIZE; i++)
while (ipfrtab[i]) {
if (kmemcpy((char *)&ifr, (u_long)ipfrtab[i],
sizeof(ifr)) == -1)
break;
PRINTF("%s -> ", hostname(4, &ifr.ipfr_src));
if (kmemcpy((char *)&fr, (u_long)ifr.ipfr_rule,
sizeof(fr)) == -1)
break;
PRINTF("%s %d %d %d %#02x = %#x\n",
hostname(4, &ifr.ipfr_dst), ifr.ipfr_id,
ifr.ipfr_ttl, ifr.ipfr_p, ifr.ipfr_tos,
fr.fr_flags);
ipfrtab[i] = ifr.ipfr_next;
}
if (kmemcpy((char *)ipfrtab, (u_long)ifsp->ifs_nattab,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("NAT: %s -> ", hostname(4, &ifr.ipfr_src));
if (kmemcpy((char *)&fr, (u_long)ifr.ipfr_rule,
sizeof(fr)) == -1)
break;
PRINTF("%s %d %d %d %#02x = %#x\n",
hostname(4, &ifr.ipfr_dst), ifr.ipfr_id,
ifr.ipfr_ttl, ifr.ipfr_p, ifr.ipfr_tos,
fr.fr_flags);
ipfrtab[i] = ifr.ipfr_next;
}
}
/*
* Show stats on how auth within IPFilter has been used
*/
static void showauthstates(asp)
fr_authstat_t *asp;
{
frauthent_t *frap, fra;
#ifdef USE_QUAD_T
printf("Authorisation hits: %qu\tmisses %qu\n",
(unsigned long long) asp->fas_hits,
(unsigned 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);
frap = asp->fas_faelist;
while (frap) {
if (kmemcpy((char *)&fra, (u_long)frap, sizeof(fra)) == -1)
break;
printf("age %ld\t", fra.fae_age);
printfr(&fra.fae_fr);
frap = fra.fae_next;
}
}
/*
* Display groups used for each of filter rules, accounting rules and
* authentication, separately.
*/
static void showgroups(fiop)
struct friostat *fiop;
{
static char *gnames[3] = { "Filter", "Accounting", "Authentication" };
frgroup_t *fp, grp;
int on, off, i;
on = fiop->f_active;
off = 1 - on;
for (i = 0; i < 3; i++) {
printf("%s groups (active):\n", gnames[i]);
for (fp = fiop->f_groups[i][on]; fp; fp = grp.fg_next)
if (kmemcpy((char *)&grp, (u_long)fp, sizeof(grp)))
break;
else
printf("%hu\n", grp.fg_num);
printf("%s groups (inactive):\n", gnames[i]);
for (fp = fiop->f_groups[i][off]; fp; fp = grp.fg_next)
if (kmemcpy((char *)&grp, (u_long)fp, sizeof(grp)))
break;
else
printf("%hu\n", grp.fg_num);
}
}
static void parse_ipportstr(argument, ip, port)
const char *argument;
struct in_addr *ip;
int *port;
{
char *s, *comma;
/* make working copy of argument, Theoretically you must be able
* to write to optarg, but that seems very ugly to me....
*/
if ((s = malloc(strlen(argument) + 1)) == NULL)
perror("malloc");
strcpy(s, argument);
/* get port */
if ((comma = strchr(s, ',')) != NULL) {
if (!strcasecmp(s, "any")) {
*port = -1;
} else if (!sscanf(comma + 1, "%d", port) ||
(*port < 0) || (*port > 65535)) {
fprintf(stderr, "Invalid port specfication in %s\n",
argument);
exit(-2);
}
*comma = '\0';
}
/* get ip address */
if (!strcasecmp(s, "any")) {
ip->s_addr = INADDR_ANY;
} else if (!inet_aton(s, ip)) {
fprintf(stderr, "Invalid IP address: %s\n", s);
exit(-2);
}
/* free allocated memory */
free(s);
}
#ifdef STATETOP
static char ttlbuf[STSTRSIZE];
static char *ttl_to_string(ttl)
long int ttl;
{
int hours, minutes, seconds;
/* ttl is in half seconds */
ttl /= 2;
hours = ttl / 3600;
ttl = ttl % 3600;
minutes = ttl / 60;
seconds = ttl % 60;
if (hours > 0 )
sprintf(ttlbuf, "%2d:%02d:%02d", hours, minutes, seconds);
else
sprintf(ttlbuf, "%2d:%02d", minutes, seconds);
return ttlbuf;
}
static int sort_pkts(a, b)
const void *a;
const void *b;
{
register const statetop_t *ap = a;
register const statetop_t *bp = b;
if (ap->st_pkts == bp->st_pkts)
return 0;
else if (ap->st_pkts < bp->st_pkts)
return 1;
return -1;
}
static int sort_bytes(a, b)
const void *a;
const void *b;
{
register const statetop_t *ap = a;
register const statetop_t *bp = b;
if (ap->st_bytes == bp->st_bytes)
return 0;
else if (ap->st_bytes < bp->st_bytes)
return 1;
return -1;
}
static int sort_p(a, b)
const void *a;
const void *b;
{
register const statetop_t *ap = a;
register const statetop_t *bp = b;
if (ap->st_p == bp->st_p)
return 0;
else if (ap->st_p < bp->st_p)
return 1;
return -1;
}
static int sort_ttl(a, b)
const void *a;
const void *b;
{
register const statetop_t *ap = a;
register const statetop_t *bp = b;
if (ap->st_age == bp->st_age)
return 0;
else if (ap->st_age < bp->st_age)
return 1;
return -1;
}
static int sort_srcip(a, b)
const void *a;
const void *b;
{
register const statetop_t *ap = a;
register const statetop_t *bp = b;
if (ntohl(ap->st_src.in4.s_addr) == ntohl(bp->st_src.in4.s_addr))
return 0;
else if (ntohl(ap->st_src.in4.s_addr) > ntohl(bp->st_src.in4.s_addr))
return 1;
return -1;
}
static int sort_dstip(a, b)
const void *a;
const void *b;
{
register const statetop_t *ap = a;
register const statetop_t *bp = b;
if (ntohl(ap->st_dst.in4.s_addr) == ntohl(bp->st_dst.in4.s_addr))
return 0;
else if (ntohl(ap->st_dst.in4.s_addr) > ntohl(bp->st_dst.in4.s_addr))
return 1;
return -1;
}
#endif
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