483 lines
12 KiB
C
483 lines
12 KiB
C
/*
|
|
* Copyright (C) 1993-2001 by Darren Reed.
|
|
*
|
|
* See the IPFILTER.LICENCE file for details on licencing.
|
|
*
|
|
* Added redirect stuff and a variety of bug fixes. (mcn@EnGarde.com)
|
|
*/
|
|
#if defined(__sgi) && (IRIX > 602)
|
|
# include <sys/ptimers.h>
|
|
#endif
|
|
#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_nat.h"
|
|
#include "netinet/ip_state.h"
|
|
#include "netinet/ip_proxy.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 rcsid[] = "@(#)$Id: printnat.c,v 1.1.2.13 2002/12/06 11:40:27 darrenr Exp $";
|
|
#endif
|
|
|
|
|
|
#if SOLARIS
|
|
#define bzero(a,b) memset(a,0,b)
|
|
#endif
|
|
#ifdef USE_INET6
|
|
extern int use_inet6;
|
|
#endif
|
|
|
|
extern char thishost[MAXHOSTNAMELEN];
|
|
|
|
extern int countbits __P((u_32_t));
|
|
|
|
void printnat __P((ipnat_t *, int));
|
|
char *getnattype __P((ipnat_t *));
|
|
void printactivenat __P((nat_t *, int));
|
|
void printhostmap __P((hostmap_t *, u_int));
|
|
char *getsumd __P((u_32_t));
|
|
|
|
static void printaps __P((ap_session_t *, int));
|
|
|
|
static void printaps(aps, opts)
|
|
ap_session_t *aps;
|
|
int opts;
|
|
{
|
|
ipsec_pxy_t ipsec;
|
|
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 %s size %d\n", ap.aps_data ? "YES" : "NO", 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\tseq %08x%08x len %d junk %d cmds %d\n",
|
|
ftp.ftp_side[0].ftps_seq[1],
|
|
ftp.ftp_side[0].ftps_seq[0],
|
|
ftp.ftp_side[0].ftps_len,
|
|
ftp.ftp_side[0].ftps_junk, ftp.ftp_side[0].ftps_cmds);
|
|
printf("\t\tbuf [");
|
|
printbuf(ftp.ftp_side[0].ftps_buf, FTP_BUFSZ, 1);
|
|
printf("]\n\tServer:\n");
|
|
printf("\t\tseq %08x%08x len %d junk %d cmds %d\n",
|
|
ftp.ftp_side[1].ftps_seq[1],
|
|
ftp.ftp_side[1].ftps_seq[0],
|
|
ftp.ftp_side[1].ftps_len,
|
|
ftp.ftp_side[1].ftps_junk, ftp.ftp_side[1].ftps_cmds);
|
|
printf("\t\tbuf [");
|
|
printbuf(ftp.ftp_side[1].ftps_buf, FTP_BUFSZ, 1);
|
|
printf("]\n");
|
|
} else if (!strcmp(apr.apr_label, "ipsec") &&
|
|
(ap.aps_psiz == sizeof(ipsec))) {
|
|
if (kmemcpy((char *)&ipsec, (long)ap.aps_data, sizeof(ipsec)))
|
|
return;
|
|
printf("\tIPSec Proxy:\n");
|
|
printf("\t\tICookie %08x%08x RCookie %08x%08x %s\n",
|
|
(u_int)ntohl(ipsec.ipsc_icookie[0]),
|
|
(u_int)ntohl(ipsec.ipsc_icookie[1]),
|
|
(u_int)ntohl(ipsec.ipsc_rcookie[0]),
|
|
(u_int)ntohl(ipsec.ipsc_rcookie[1]),
|
|
ipsec.ipsc_rckset ? "(Set)" : "(Not set)");
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Get a nat filter type given its kernel address.
|
|
*/
|
|
char *getnattype(ipnat)
|
|
ipnat_t *ipnat;
|
|
{
|
|
static char unknownbuf[20];
|
|
ipnat_t ipnatbuff;
|
|
char *which;
|
|
|
|
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 :
|
|
sprintf(unknownbuf, "unknown(%04x)",
|
|
ipnatbuff.in_redir & 0xffffffff);
|
|
which = unknownbuf;
|
|
break;
|
|
}
|
|
return which;
|
|
}
|
|
|
|
|
|
void printactivenat(nat, opts)
|
|
nat_t *nat;
|
|
int opts;
|
|
{
|
|
u_int hv1, hv2;
|
|
|
|
printf("%s %-15s", getnattype(nat->nat_ptr), inet_ntoa(nat->nat_inip));
|
|
|
|
if ((nat->nat_flags & IPN_TCPUDP) != 0)
|
|
printf(" %-5hu", ntohs(nat->nat_inport));
|
|
|
|
printf(" <- -> %-15s",inet_ntoa(nat->nat_outip));
|
|
|
|
if ((nat->nat_flags & IPN_TCPUDP) != 0)
|
|
printf(" %-5hu", ntohs(nat->nat_outport));
|
|
|
|
printf(" [%s", inet_ntoa(nat->nat_oip));
|
|
if ((nat->nat_flags & IPN_TCPUDP) != 0)
|
|
printf(" %hu", ntohs(nat->nat_oport));
|
|
printf("]");
|
|
|
|
if (opts & OPT_VERBOSE) {
|
|
printf("\n\tage %lu use %hu sumd %s/",
|
|
nat->nat_age, nat->nat_use, getsumd(nat->nat_sumd[0]));
|
|
hv1 = NAT_HASH_FN(nat->nat_inip.s_addr, nat->nat_inport,
|
|
0xffffffff),
|
|
hv1 = NAT_HASH_FN(nat->nat_oip.s_addr, hv1 + nat->nat_oport,
|
|
NAT_TABLE_SZ),
|
|
hv2 = NAT_HASH_FN(nat->nat_outip.s_addr, nat->nat_outport,
|
|
0xffffffff),
|
|
hv2 = NAT_HASH_FN(nat->nat_oip.s_addr, hv2 + nat->nat_oport,
|
|
NAT_TABLE_SZ),
|
|
printf("%s pr %u bkt %d/%d flags %x drop %d/%d\n",
|
|
getsumd(nat->nat_sumd[1]), nat->nat_p,
|
|
hv1, hv2, nat->nat_flags,
|
|
nat->nat_drop[0], nat->nat_drop[1]);
|
|
printf("\tifp %s ", getifname(nat->nat_ifp));
|
|
#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);
|
|
}
|
|
|
|
|
|
void printhostmap(hmp, hv)
|
|
hostmap_t *hmp;
|
|
u_int hv;
|
|
{
|
|
printf("%s -> ", inet_ntoa(hmp->hm_realip));
|
|
printf("%s ", inet_ntoa(hmp->hm_mapip));
|
|
printf("(use = %d hv = %u)\n", hmp->hm_ref, hv);
|
|
}
|
|
|
|
|
|
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;
|
|
}
|
|
|
|
|
|
/*
|
|
* Print out a NAT rule
|
|
*/
|
|
void printnat(np, opts)
|
|
ipnat_t *np;
|
|
int opts;
|
|
{
|
|
struct protoent *pr;
|
|
struct servent *sv;
|
|
int bits;
|
|
|
|
pr = getprotobynumber(np->in_p);
|
|
|
|
switch (np->in_redir)
|
|
{
|
|
case NAT_REDIRECT :
|
|
printf("rdr");
|
|
break;
|
|
case NAT_MAP :
|
|
printf("map");
|
|
break;
|
|
case NAT_MAPBLK :
|
|
printf("map-block");
|
|
break;
|
|
case NAT_BIMAP :
|
|
printf("bimap");
|
|
break;
|
|
default :
|
|
fprintf(stderr, "unknown value for in_redir: %#x\n",
|
|
np->in_redir);
|
|
break;
|
|
}
|
|
|
|
printf(" %s ", np->in_ifname);
|
|
|
|
if (np->in_flags & IPN_FILTER) {
|
|
if (np->in_flags & IPN_NOTSRC)
|
|
printf("! ");
|
|
printf("from ");
|
|
if (np->in_redir == NAT_REDIRECT) {
|
|
printhostmask(4, (u_32_t *)&np->in_srcip,
|
|
(u_32_t *)&np->in_srcmsk);
|
|
} else {
|
|
printhostmask(4, (u_32_t *)&np->in_inip,
|
|
(u_32_t *)&np->in_inmsk);
|
|
}
|
|
if (np->in_scmp)
|
|
printportcmp(np->in_p, &np->in_tuc.ftu_src);
|
|
|
|
if (np->in_flags & IPN_NOTDST)
|
|
printf(" !");
|
|
printf(" to ");
|
|
if (np->in_redir == NAT_REDIRECT) {
|
|
printhostmask(4, (u_32_t *)&np->in_outip,
|
|
(u_32_t *)&np->in_outmsk);
|
|
} else {
|
|
printhostmask(4, (u_32_t *)&np->in_srcip,
|
|
(u_32_t *)&np->in_srcmsk);
|
|
}
|
|
if (np->in_dcmp)
|
|
printportcmp(np->in_p, &np->in_tuc.ftu_dst);
|
|
}
|
|
|
|
if (np->in_redir == NAT_REDIRECT) {
|
|
if (!(np->in_flags & IPN_FILTER)) {
|
|
printf("%s", inet_ntoa(np->in_out[0]));
|
|
bits = countbits(np->in_out[1].s_addr);
|
|
if (bits != -1)
|
|
printf("/%d ", bits);
|
|
else
|
|
printf("/%s ", inet_ntoa(np->in_out[1]));
|
|
printf("port %d", ntohs(np->in_pmin));
|
|
if (np->in_pmax != np->in_pmin)
|
|
printf("- %d", ntohs(np->in_pmax));
|
|
}
|
|
printf(" -> %s", inet_ntoa(np->in_in[0]));
|
|
if (np->in_flags & IPN_SPLIT)
|
|
printf(",%s", inet_ntoa(np->in_in[1]));
|
|
printf(" port %d", ntohs(np->in_pnext));
|
|
if ((np->in_flags & IPN_TCPUDP) == IPN_TCPUDP)
|
|
printf(" tcp/udp");
|
|
else if ((np->in_flags & IPN_TCP) == IPN_TCP)
|
|
printf(" tcp");
|
|
else if ((np->in_flags & IPN_UDP) == IPN_UDP)
|
|
printf(" udp");
|
|
else if (np->in_p == 0)
|
|
printf(" ip");
|
|
else if (np->in_p != 0) {
|
|
if (pr != NULL)
|
|
printf(" %s", pr->p_name);
|
|
else
|
|
printf(" %d", np->in_p);
|
|
}
|
|
if (np->in_flags & IPN_ROUNDR)
|
|
printf(" round-robin");
|
|
if (np->in_flags & IPN_FRAG)
|
|
printf(" frag");
|
|
if (np->in_age[0])
|
|
printf(" age %d/%d", np->in_age[0], np->in_age[1]);
|
|
if (np->in_mssclamp)
|
|
printf(" mssclamp %u", np->in_mssclamp);
|
|
printf("\n");
|
|
if (opts & OPT_DEBUG)
|
|
printf("\tspc %lu flg %#x max %u use %d\n",
|
|
np->in_space, np->in_flags,
|
|
np->in_pmax, np->in_use);
|
|
} else {
|
|
np->in_nextip.s_addr = htonl(np->in_nextip.s_addr);
|
|
if (!(np->in_flags & IPN_FILTER)) {
|
|
printf("%s/", inet_ntoa(np->in_in[0]));
|
|
bits = countbits(np->in_in[1].s_addr);
|
|
if (bits != -1)
|
|
printf("%d", bits);
|
|
else
|
|
printf("%s", inet_ntoa(np->in_in[1]));
|
|
}
|
|
printf(" -> ");
|
|
if (np->in_flags & IPN_IPRANGE) {
|
|
printf("range %s-", inet_ntoa(np->in_out[0]));
|
|
printf("%s", inet_ntoa(np->in_out[1]));
|
|
} else {
|
|
printf("%s/", inet_ntoa(np->in_out[0]));
|
|
bits = countbits(np->in_out[1].s_addr);
|
|
if (bits != -1)
|
|
printf("%d", bits);
|
|
else
|
|
printf("%s", inet_ntoa(np->in_out[1]));
|
|
}
|
|
if (*np->in_plabel) {
|
|
printf(" proxy port");
|
|
if (np->in_dport != 0) {
|
|
if (pr != NULL)
|
|
sv = getservbyport(np->in_dport,
|
|
pr->p_name);
|
|
else
|
|
sv = getservbyport(np->in_dport, NULL);
|
|
if (sv != NULL)
|
|
printf(" %s", sv->s_name);
|
|
else
|
|
printf(" %hu", ntohs(np->in_dport));
|
|
}
|
|
printf(" %.*s/", (int)sizeof(np->in_plabel),
|
|
np->in_plabel);
|
|
if (pr != NULL)
|
|
fputs(pr->p_name, stdout);
|
|
else
|
|
printf("%d", np->in_p);
|
|
} else if (np->in_redir == NAT_MAPBLK) {
|
|
if ((np->in_pmin == 0) &&
|
|
(np->in_flags & IPN_AUTOPORTMAP))
|
|
printf(" ports auto");
|
|
else
|
|
printf(" ports %d", np->in_pmin);
|
|
if (opts & OPT_DEBUG)
|
|
printf("\n\tip modulous %d", np->in_pmax);
|
|
} else if (np->in_pmin || np->in_pmax) {
|
|
printf(" portmap");
|
|
if ((np->in_flags & IPN_TCPUDP) == IPN_TCPUDP)
|
|
printf(" tcp/udp");
|
|
else if (np->in_flags & IPN_TCP)
|
|
printf(" tcp");
|
|
else if (np->in_flags & IPN_UDP)
|
|
printf(" udp");
|
|
if (np->in_flags & IPN_AUTOPORTMAP) {
|
|
printf(" auto");
|
|
if (opts & OPT_DEBUG)
|
|
printf(" [%d:%d %d %d]",
|
|
ntohs(np->in_pmin),
|
|
ntohs(np->in_pmax),
|
|
np->in_ippip, np->in_ppip);
|
|
} else {
|
|
printf(" %d:%d", ntohs(np->in_pmin),
|
|
ntohs(np->in_pmax));
|
|
}
|
|
}
|
|
if (np->in_flags & IPN_FRAG)
|
|
printf(" frag");
|
|
if (np->in_age[0])
|
|
printf(" age %d/%d", np->in_age[0], np->in_age[1]);
|
|
printf("\n");
|
|
if (opts & OPT_DEBUG) {
|
|
printf("\tspace %lu nextip %s pnext %d", np->in_space,
|
|
inet_ntoa(np->in_nextip), np->in_pnext);
|
|
printf(" flags %x use %u\n",
|
|
np->in_flags, np->in_use);
|
|
}
|
|
}
|
|
}
|