402 lines
9.5 KiB
C
402 lines
9.5 KiB
C
/*
|
|
* Copyright (C) 1993-2000 by Darren Reed.
|
|
*
|
|
* Redistribution and use in source and binary forms are permitted
|
|
* provided that this notice is preserved and due credit is given
|
|
* to the original author and the contributors.
|
|
*
|
|
* Added redirect stuff and a variety of bug fixes. (mcn@EnGarde.com)
|
|
*/
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
#include <sys/types.h>
|
|
#if !defined(__SVR4) && !defined(__svr4__)
|
|
#include <strings.h>
|
|
#else
|
|
#include <sys/byteorder.h>
|
|
#endif
|
|
#include <sys/time.h>
|
|
#include <sys/param.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <stddef.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/ioctl.h>
|
|
#if defined(sun) && (defined(__svr4__) || defined(__SVR4))
|
|
# include <sys/ioccom.h>
|
|
# include <sys/sysmacros.h>
|
|
#endif
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <netinet/ip.h>
|
|
#include <netinet/tcp.h>
|
|
#include <net/if.h>
|
|
#if __FreeBSD_version >= 300000
|
|
# include <net/if_var.h>
|
|
#endif
|
|
#include <netdb.h>
|
|
#include <arpa/nameser.h>
|
|
#include <arpa/inet.h>
|
|
#include <resolv.h>
|
|
#include <ctype.h>
|
|
#include "netinet/ip_compat.h"
|
|
#include "netinet/ip_fil.h"
|
|
#include "netinet/ip_proxy.h"
|
|
#include "netinet/ip_nat.h"
|
|
#include "ipf.h"
|
|
#include "kmem.h"
|
|
|
|
#if defined(sun) && !SOLARIS2
|
|
# define STRERROR(x) sys_errlist[x]
|
|
extern char *sys_errlist[];
|
|
#else
|
|
# define STRERROR(x) strerror(x)
|
|
#endif
|
|
|
|
#if !defined(lint)
|
|
static const char sccsid[] ="@(#)ipnat.c 1.9 6/5/96 (C) 1993 Darren Reed";
|
|
static const char rcsid[] = "@(#)$Id: ipnat.c,v 2.16.2.2 2000/05/15 06:54:18 darrenr Exp $";
|
|
#endif
|
|
|
|
|
|
#if SOLARIS
|
|
#define bzero(a,b) memset(a,0,b)
|
|
#endif
|
|
#ifdef USE_INET6
|
|
int use_inet6 = 0;
|
|
#endif
|
|
|
|
static char thishost[MAXHOSTNAMELEN];
|
|
|
|
|
|
extern char *optarg;
|
|
extern ipnat_t *natparse __P((char *, int));
|
|
extern void natparsefile __P((int, char *, int));
|
|
extern void printnat __P((ipnat_t *, int, void *));
|
|
|
|
void dostats __P((int, int)), flushtable __P((int, int));
|
|
void usage __P((char *));
|
|
int countbits __P((u_32_t));
|
|
char *getnattype __P((ipnat_t *));
|
|
int main __P((int, char*[]));
|
|
void printaps __P((ap_session_t *, int));
|
|
char *getsumd __P((u_32_t));
|
|
|
|
|
|
void usage(name)
|
|
char *name;
|
|
{
|
|
fprintf(stderr, "%s: [-CFhlnrsv] [-f filename]\n", name);
|
|
exit(1);
|
|
}
|
|
|
|
|
|
char *getsumd(sum)
|
|
u_32_t sum;
|
|
{
|
|
static char sumdbuf[17];
|
|
|
|
if (sum & NAT_HW_CKSUM)
|
|
sprintf(sumdbuf, "hw(%#0x)", sum & 0xffff);
|
|
else
|
|
sprintf(sumdbuf, "%#0x", sum);
|
|
return sumdbuf;
|
|
}
|
|
|
|
|
|
int main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
char *file = NULL;
|
|
int fd = -1, opts = 0, c;
|
|
|
|
while ((c = getopt(argc, argv, "CdFf:hlnrsv")) != -1)
|
|
switch (c)
|
|
{
|
|
case 'C' :
|
|
opts |= OPT_CLEAR;
|
|
break;
|
|
case 'd' :
|
|
opts |= OPT_DEBUG;
|
|
break;
|
|
case 'f' :
|
|
file = optarg;
|
|
break;
|
|
case 'F' :
|
|
opts |= OPT_FLUSH;
|
|
break;
|
|
case 'h' :
|
|
opts |=OPT_HITS;
|
|
break;
|
|
case 'l' :
|
|
opts |= OPT_LIST;
|
|
break;
|
|
case 'n' :
|
|
opts |= OPT_NODO;
|
|
break;
|
|
case 'r' :
|
|
opts |= OPT_REMOVE;
|
|
break;
|
|
case 's' :
|
|
opts |= OPT_STAT;
|
|
break;
|
|
case 'v' :
|
|
opts |= OPT_VERBOSE;
|
|
break;
|
|
default :
|
|
usage(argv[0]);
|
|
}
|
|
|
|
gethostname(thishost, sizeof(thishost));
|
|
thishost[sizeof(thishost) - 1] = '\0';
|
|
|
|
if (!(opts & OPT_NODO) && ((fd = open(IPL_NAT, O_RDWR)) == -1) &&
|
|
((fd = open(IPL_NAT, O_RDONLY)) == -1)) {
|
|
(void) fprintf(stderr, "%s: open: %s\n", IPL_NAT,
|
|
STRERROR(errno));
|
|
exit(-1);
|
|
}
|
|
|
|
if (opts & (OPT_FLUSH|OPT_CLEAR))
|
|
flushtable(fd, opts);
|
|
if (file)
|
|
natparsefile(fd, file, opts);
|
|
if (opts & (OPT_LIST|OPT_STAT))
|
|
dostats(fd, opts);
|
|
return 0;
|
|
}
|
|
|
|
|
|
void printaps(aps, opts)
|
|
ap_session_t *aps;
|
|
int opts;
|
|
{
|
|
ap_session_t ap;
|
|
ftpinfo_t ftp;
|
|
aproxy_t apr;
|
|
raudio_t ra;
|
|
|
|
if (kmemcpy((char *)&ap, (long)aps, sizeof(ap)))
|
|
return;
|
|
if (kmemcpy((char *)&apr, (long)ap.aps_apr, sizeof(apr)))
|
|
return;
|
|
printf("\tproxy %s/%d use %d flags %x\n", apr.apr_label,
|
|
apr.apr_p, apr.apr_ref, apr.apr_flags);
|
|
printf("\t\tproto %d flags %#x bytes ", ap.aps_p, ap.aps_flags);
|
|
#ifdef USE_QUAD_T
|
|
printf("%qu pkts %qu", (unsigned long long)ap.aps_bytes,
|
|
(unsigned long long)ap.aps_pkts);
|
|
#else
|
|
printf("%lu pkts %lu", ap.aps_bytes, ap.aps_pkts);
|
|
#endif
|
|
printf(" data %p psiz %d\n", ap.aps_data, ap.aps_psiz);
|
|
if ((ap.aps_p == IPPROTO_TCP) && (opts & OPT_VERBOSE)) {
|
|
printf("\t\tstate[%u,%u], sel[%d,%d]\n",
|
|
ap.aps_state[0], ap.aps_state[1],
|
|
ap.aps_sel[0], ap.aps_sel[1]);
|
|
#if (defined(NetBSD) && (NetBSD >= 199905) && (NetBSD < 1991011)) || \
|
|
(__FreeBSD_version >= 300000) || defined(OpenBSD)
|
|
printf("\t\tseq: off %hd/%hd min %x/%x\n",
|
|
ap.aps_seqoff[0], ap.aps_seqoff[1],
|
|
ap.aps_seqmin[0], ap.aps_seqmin[1]);
|
|
printf("\t\tack: off %hd/%hd min %x/%x\n",
|
|
ap.aps_ackoff[0], ap.aps_ackoff[1],
|
|
ap.aps_ackmin[0], ap.aps_ackmin[1]);
|
|
#else
|
|
printf("\t\tseq: off %hd/%hd min %lx/%lx\n",
|
|
ap.aps_seqoff[0], ap.aps_seqoff[1],
|
|
ap.aps_seqmin[0], ap.aps_seqmin[1]);
|
|
printf("\t\tack: off %hd/%hd min %lx/%lx\n",
|
|
ap.aps_ackoff[0], ap.aps_ackoff[1],
|
|
ap.aps_ackmin[0], ap.aps_ackmin[1]);
|
|
#endif
|
|
}
|
|
|
|
if (!strcmp(apr.apr_label, "raudio") && ap.aps_psiz == sizeof(ra)) {
|
|
if (kmemcpy((char *)&ra, (long)ap.aps_data, sizeof(ra)))
|
|
return;
|
|
printf("\tReal Audio Proxy:\n");
|
|
printf("\t\tSeen PNA: %d\tVersion: %d\tEOS: %d\n",
|
|
ra.rap_seenpna, ra.rap_version, ra.rap_eos);
|
|
printf("\t\tMode: %#x\tSBF: %#x\n", ra.rap_mode, ra.rap_sbf);
|
|
printf("\t\tPorts:pl %hu, pr %hu, sr %hu\n",
|
|
ra.rap_plport, ra.rap_prport, ra.rap_srport);
|
|
} else if (!strcmp(apr.apr_label, "ftp") &&
|
|
(ap.aps_psiz == sizeof(ftp))) {
|
|
if (kmemcpy((char *)&ftp, (long)ap.aps_data, sizeof(ftp)))
|
|
return;
|
|
printf("\tFTP Proxy:\n");
|
|
printf("\t\tpassok: %d\n", ftp.ftp_passok);
|
|
ftp.ftp_side[0].ftps_buf[FTP_BUFSZ - 1] = '\0';
|
|
ftp.ftp_side[1].ftps_buf[FTP_BUFSZ - 1] = '\0';
|
|
printf("\tClient:\n");
|
|
printf("\t\trptr %p wptr %p seq %x junk %d\n",
|
|
ftp.ftp_side[0].ftps_rptr, ftp.ftp_side[0].ftps_wptr,
|
|
ftp.ftp_side[0].ftps_seq, ftp.ftp_side[0].ftps_junk);
|
|
printf("\t\tbuf [");
|
|
printbuf(ftp.ftp_side[0].ftps_buf, FTP_BUFSZ, 1);
|
|
printf("]\n\tServer:\n");
|
|
printf("\t\trptr %p wptr %p seq %x junk %d\n",
|
|
ftp.ftp_side[1].ftps_rptr, ftp.ftp_side[1].ftps_wptr,
|
|
ftp.ftp_side[1].ftps_seq, ftp.ftp_side[1].ftps_junk);
|
|
printf("\t\tbuf [");
|
|
printbuf(ftp.ftp_side[1].ftps_buf, FTP_BUFSZ, 1);
|
|
printf("]\n");
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Get a nat filter type given its kernel address.
|
|
*/
|
|
char *getnattype(ipnat)
|
|
ipnat_t *ipnat;
|
|
{
|
|
char *which;
|
|
ipnat_t ipnatbuff;
|
|
|
|
if (!ipnat || (ipnat && kmemcpy((char *)&ipnatbuff, (long)ipnat,
|
|
sizeof(ipnatbuff))))
|
|
return "???";
|
|
|
|
switch (ipnatbuff.in_redir)
|
|
{
|
|
case NAT_MAP :
|
|
which = "MAP";
|
|
break;
|
|
case NAT_MAPBLK :
|
|
which = "MAP-BLOCK";
|
|
break;
|
|
case NAT_REDIRECT :
|
|
which = "RDR";
|
|
break;
|
|
case NAT_BIMAP :
|
|
which = "BIMAP";
|
|
break;
|
|
default :
|
|
which = "unknown";
|
|
break;
|
|
}
|
|
return which;
|
|
}
|
|
|
|
|
|
void dostats(fd, opts)
|
|
int fd, opts;
|
|
{
|
|
natstat_t ns, *nsp = &ns;
|
|
nat_t **nt[2], *np, nat;
|
|
ipnat_t ipn;
|
|
|
|
bzero((char *)&ns, sizeof(ns));
|
|
|
|
if (!(opts & OPT_NODO) && ioctl(fd, SIOCGNATS, &nsp) == -1) {
|
|
perror("ioctl(SIOCGNATS)");
|
|
return;
|
|
}
|
|
|
|
if (opts & OPT_STAT) {
|
|
printf("mapped\tin\t%lu\tout\t%lu\n",
|
|
ns.ns_mapped[0], ns.ns_mapped[1]);
|
|
printf("added\t%lu\texpired\t%lu\n",
|
|
ns.ns_added, ns.ns_expire);
|
|
printf("no memory\t%lu\tbad nat\t%lu\n",
|
|
ns.ns_memfail, ns.ns_badnat);
|
|
printf("inuse\t%lu\nrules\t%lu\n", ns.ns_inuse, ns.ns_rules);
|
|
if (opts & OPT_VERBOSE)
|
|
printf("table %p list %p\n", ns.ns_table, ns.ns_list);
|
|
}
|
|
if (opts & OPT_LIST) {
|
|
printf("List of active MAP/Redirect filters:\n");
|
|
while (ns.ns_list) {
|
|
if (kmemcpy((char *)&ipn, (long)ns.ns_list,
|
|
sizeof(ipn))) {
|
|
perror("kmemcpy");
|
|
break;
|
|
}
|
|
if (opts & OPT_HITS)
|
|
printf("%d ", ipn.in_hits);
|
|
printnat(&ipn, opts & (OPT_DEBUG|OPT_VERBOSE),
|
|
(void *)ns.ns_list);
|
|
ns.ns_list = ipn.in_next;
|
|
}
|
|
|
|
nt[0] = (nat_t **)malloc(sizeof(*nt) * NAT_SIZE);
|
|
if (kmemcpy((char *)nt[0], (long)ns.ns_table[0],
|
|
sizeof(**nt) * NAT_SIZE)) {
|
|
perror("kmemcpy");
|
|
return;
|
|
}
|
|
|
|
printf("\nList of active sessions:\n");
|
|
|
|
for (np = ns.ns_instances; np; np = nat.nat_next) {
|
|
if (kmemcpy((char *)&nat, (long)np, sizeof(nat)))
|
|
break;
|
|
|
|
printf("%s %-15s %-5hu <- ->", getnattype(nat.nat_ptr),
|
|
inet_ntoa(nat.nat_inip), ntohs(nat.nat_inport));
|
|
printf(" %-15s %-5hu", inet_ntoa(nat.nat_outip),
|
|
ntohs(nat.nat_outport));
|
|
printf(" [%s %hu]", inet_ntoa(nat.nat_oip),
|
|
ntohs(nat.nat_oport));
|
|
if (opts & OPT_VERBOSE) {
|
|
printf("\n\tage %lu use %hu sumd %s/",
|
|
nat.nat_age, nat.nat_use,
|
|
getsumd(nat.nat_sumd[0]));
|
|
printf("%s pr %u bkt %d/%d flags %x ",
|
|
getsumd(nat.nat_sumd[1]), nat.nat_p,
|
|
(int)NAT_HASH_FN(nat.nat_inip.s_addr,
|
|
nat.nat_inport,
|
|
NAT_TABLE_SZ),
|
|
(int)NAT_HASH_FN(nat.nat_outip.s_addr,
|
|
nat.nat_outport,
|
|
NAT_TABLE_SZ),
|
|
nat.nat_flags);
|
|
#ifdef USE_QUAD_T
|
|
printf("bytes %qu pkts %qu",
|
|
(unsigned long long)nat.nat_bytes,
|
|
(unsigned long long)nat.nat_pkts);
|
|
#else
|
|
printf("bytes %lu pkts %lu",
|
|
nat.nat_bytes, nat.nat_pkts);
|
|
#endif
|
|
#if SOLARIS
|
|
printf(" %lx", nat.nat_ipsumd);
|
|
#endif
|
|
}
|
|
putchar('\n');
|
|
if (nat.nat_aps)
|
|
printaps(nat.nat_aps, opts);
|
|
}
|
|
|
|
free(nt[0]);
|
|
}
|
|
}
|
|
|
|
|
|
void flushtable(fd, opts)
|
|
int fd, opts;
|
|
{
|
|
int n = 0;
|
|
|
|
if (opts & OPT_FLUSH) {
|
|
n = 0;
|
|
if (!(opts & OPT_NODO) && ioctl(fd, SIOCIPFFL, &n) == -1)
|
|
perror("ioctl(SIOCFLNAT)");
|
|
else
|
|
printf("%d entries flushed from NAT table\n", n);
|
|
}
|
|
|
|
if (opts & OPT_CLEAR) {
|
|
n = 1;
|
|
if (!(opts & OPT_NODO) && ioctl(fd, SIOCIPFFL, &n) == -1)
|
|
perror("ioctl(SIOCCNATL)");
|
|
else
|
|
printf("%d entries flushed from NAT list\n", n);
|
|
}
|
|
}
|