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NetBSD/dist/ipf/lib/printnat.c
martti 76b5d9e30f Import IPFilter 4.1.6
2005-02-19 21:26:02 +00:00

248 lines
6.2 KiB
C
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/* $NetBSD: printnat.c,v 1.1.1.4 2005/02/19 21:26:49 martti Exp $ */
/*
* 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)
*/
#include "ipf.h"
#include "kmem.h"
#if !defined(lint)
static const char rcsid[] = "@(#)Id: printnat.c,v 1.22.2.8 2005/01/12 03:39:04 darrenr Exp";
#endif
static void printproto __P((ipnat_t *, struct protoent *));
/*
* Print out a NAT rule
*/
void printnat(np, opts)
ipnat_t *np;
int opts;
{
struct protoent *pr;
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_ifnames[0]);
if ((np->in_ifnames[1][0] != '\0') &&
(strncmp(np->in_ifnames[0], np->in_ifnames[1], LIFNAMSIZ) != 0)) {
printf(",%s ", np->in_ifnames[1]);
}
putchar(' ');
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].in4));
bits = count4bits(np->in_outmsk);
if (bits != -1)
printf("/%d", bits);
else
printf("/%s", inet_ntoa(np->in_out[1].in4));
if (np->in_flags & IPN_TCPUDP) {
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].in4));
if (np->in_flags & IPN_SPLIT)
printf(",%s", inet_ntoa(np->in_in[1].in4));
if (np->in_flags & IPN_TCPUDP) {
if ((np->in_flags & IPN_FIXEDDPORT) != 0)
printf(" port = %d", ntohs(np->in_pnext));
else
printf(" port %d", ntohs(np->in_pnext));
}
printproto(np, pr);
if (np->in_flags & IPN_ROUNDR)
printf(" round-robin");
if (np->in_flags & IPN_FRAG)
printf(" frag");
if (np->in_age[0] != 0 || np->in_age[1] != 0) {
printf(" age %d/%d", np->in_age[0], np->in_age[1]);
}
if (np->in_flags & IPN_STICKY)
printf(" sticky");
if (np->in_mssclamp != 0)
printf(" mssclamp %d", np->in_mssclamp);
if (*np->in_plabel != '\0')
printf(" proxy %.*s", (int)sizeof(np->in_plabel),
np->in_plabel);
if (np->in_tag.ipt_tag[0] != '\0')
printf(" tag %-.*s", IPFTAG_LEN, np->in_tag.ipt_tag);
printf("\n");
if (opts & OPT_DEBUG)
printf("\tpmax %u\n", np->in_pmax);
} else {
if (!(np->in_flags & IPN_FILTER)) {
printf("%s/", inet_ntoa(np->in_in[0].in4));
bits = count4bits(np->in_inmsk);
if (bits != -1)
printf("%d", bits);
else
printf("%s", inet_ntoa(np->in_in[1].in4));
}
printf(" -> ");
if (np->in_flags & IPN_IPRANGE) {
printf("range %s-", inet_ntoa(np->in_out[0].in4));
printf("%s", inet_ntoa(np->in_out[1].in4));
} else {
printf("%s/", inet_ntoa(np->in_out[0].in4));
bits = count4bits(np->in_outmsk);
if (bits != -1)
printf("%d", bits);
else
printf("%s", inet_ntoa(np->in_out[1].in4));
}
if (*np->in_plabel != '\0') {
printf(" proxy port ");
if (np->in_dcmp != 0)
np->in_dport = htons(np->in_dport);
if (np->in_dport != 0) {
char *s;
s = portname(np->in_p, ntohs(np->in_dport));
if (s != NULL)
fputs(s, stdout);
else
fputs("???", stdout);
}
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) {
if (np->in_flags & IPN_ICMPQUERY) {
printf(" icmpidmap");
} else {
printf(" portmap");
}
printproto(np, pr);
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));
}
} else if (np->in_flags & IPN_TCPUDP || np->in_p)
printproto(np, pr);
if (np->in_flags & IPN_FRAG)
printf(" frag");
if (np->in_age[0] != 0 || np->in_age[1] != 0) {
printf(" age %d/%d", np->in_age[0], np->in_age[1]);
}
if (np->in_mssclamp != 0)
printf(" mssclamp %d", np->in_mssclamp);
if (np->in_tag.ipt_tag[0] != '\0')
printf(" tag %s", np->in_tag.ipt_tag);
printf("\n");
if (opts & OPT_DEBUG) {
struct in_addr nip;
nip.s_addr = htonl(np->in_nextip.s_addr);
printf("\tnextip %s pnext %d\n",
inet_ntoa(nip), np->in_pnext);
}
}
if (opts & OPT_DEBUG) {
printf("\tspace %lu use %u hits %lu flags %#x proto %d hv %d\n",
np->in_space, np->in_use, np->in_hits,
np->in_flags, np->in_p, np->in_hv);
printf("\tifp[0] %p ifp[1] %p apr %p\n",
np->in_ifps[0], np->in_ifps[1], np->in_apr);
printf("\ttqehead %p/%p comment %p\n",
np->in_tqehead[0], np->in_tqehead[1], np->in_comment);
}
}
static void printproto(np, pr)
ipnat_t *np;
struct protoent *pr;
{
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");
else if (np->in_flags & IPN_ICMPQUERY)
printf(" icmp");
else if (pr != NULL)
printf(" %s", pr->p_name);
else
printf(" %d", np->in_p);
}
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