/* $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); }