/* $NetBSD: fils.c,v 1.15 1998/11/22 15:21:54 mrg Exp $ */ /* * Copyright (C) 1993-1998 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. */ #include #include #if !defined(__SVR4) && !defined(__svr4__) #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "netinet/ip_compat.h" #include "netinet/ip_fil.h" #include "ipf.h" #include "netinet/ip_proxy.h" #include "netinet/ip_nat.h" #include "netinet/ip_frag.h" #include "netinet/ip_state.h" #include "netinet/ip_auth.h" #include "kmem.h" #if defined(__NetBSD__) || (__OpenBSD__) #include #endif #if !defined(lint) static const char sccsid[] = "@(#)fils.c 1.21 4/20/96 (C) 1993-1996 Darren Reed"; static const char rcsid[] = "@(#)Id: fils.c,v 2.0.2.25.2.7 1998/11/22 01:50:17 darrenr Exp "; #endif #ifdef _PATH_UNIX #define VMUNIX _PATH_UNIX #else #define VMUNIX "/vmunix" #endif extern char *optarg; #define PRINTF (void)printf #define FPRINTF (void)fprintf #define F_IN 0 #define F_OUT 1 #define F_AC 2 static char *filters[4] = { "ipfilter(in)", "ipfilter(out)", "ipacct(in)", "ipacct(out)" }; int opts = 0; extern int main __P((int, char *[])); static void showstats __P((int, friostat_t *)); static void showfrstates __P((int, ipfrstat_t *)); static void showlist __P((friostat_t *)); static void showipstates __P((int, ips_stat_t *)); static void showauthstates __P((int, fr_authstat_t *)); static void Usage __P((char *)); static void printlist __P((frentry_t *)); static void Usage(name) char *name; { fprintf(stderr, "Usage: %s [-aAfhIinosv] [-d ]\n", name); exit(1); } int main(argc,argv) int argc; char *argv[]; { fr_authstat_t frauthst; friostat_t fio; ips_stat_t ipsst; ipfrstat_t ifrst; char *name = NULL, *device = IPL_NAME; int c, fd; if (openkmem() == -1) exit(-1); (void)setuid(getuid()); (void)setgid(getgid()); while ((c = getopt(argc, argv, "aAfhIinosvd:")) != -1) { switch (c) { case 'a' : opts |= OPT_ACCNT|OPT_SHOWLIST; break; case 'A' : opts |= OPT_AUTHSTATS; break; case 'd' : device = optarg; break; case 'f' : opts |= OPT_FRSTATES; break; case 'h' : opts |= OPT_HITS; break; case 'i' : opts |= OPT_INQUE|OPT_SHOWLIST; break; case 'I' : opts |= OPT_INACTIVE; break; case 'n' : opts |= OPT_SHOWLINENO; break; case 'o' : opts |= OPT_OUTQUE|OPT_SHOWLIST; break; case 's' : opts |= OPT_IPSTATES; break; case 'v' : opts |= OPT_VERBOSE; break; default : Usage(argv[0]); break; } } if ((fd = open(device, O_RDONLY)) < 0) { perror("open"); exit(-1); } bzero((char *)&fio, sizeof(fio)); bzero((char *)&ipsst, sizeof(ipsst)); bzero((char *)&ifrst, sizeof(ifrst)); if (ioctl(fd, SIOCGETFS, &fio) == -1) { perror("ioctl(SIOCGETFS)"); exit(-1); } if ((opts & OPT_IPSTATES)) { int sfd = open(IPL_STATE, O_RDONLY); if (sfd == -1) { perror("open"); exit(-1); } if ((ioctl(sfd, SIOCGIPST, &ipsst) == -1)) { perror("ioctl(SIOCGIPST)"); exit(-1); } close(sfd); } if ((opts & OPT_FRSTATES) && (ioctl(fd, SIOCGFRST, &ifrst) == -1)) { perror("ioctl(SIOCGFRST)"); exit(-1); } if (opts & OPT_VERBOSE) PRINTF("opts %#x name %s\n", opts, name ? name : "<>"); if ((opts & OPT_AUTHSTATS) && (ioctl(fd, SIOCATHST, &frauthst) == -1)) { perror("ioctl(SIOCATHST)"); exit(-1); } if (opts & OPT_SHOWLIST) { showlist(&fio); if ((opts & OPT_OUTQUE) && (opts & OPT_INQUE)){ opts &= ~OPT_OUTQUE; showlist(&fio); } } else { if (opts & OPT_IPSTATES) showipstates(fd, &ipsst); else if (opts & OPT_FRSTATES) showfrstates(fd, &ifrst); else if (opts & OPT_AUTHSTATS) showauthstates(fd, &frauthst); else showstats(fd, &fio); } return 0; } /* * read the kernel stats for packets blocked and passed */ static void showstats(fd, fp) int fd; struct friostat *fp; { int frf = 0; if (ioctl(fd, SIOCGETFF, &frf) == -1) perror("ioctl(SIOCGETFF)"); #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); #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\n", fp->f_st[0].fr_acct); 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\n", fp->f_st[0].fr_acct); 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("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"); } 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("%qd ", (long long)fp->fr_hits); #else PRINTF("%ld ", fp->fr_hits); #endif if (opts & (OPT_ACCNT|OPT_VERBOSE)) #ifdef USE_QUAD_T PRINTF("%qd ", (long long)fp->fr_bytes); #else PRINTF("%ld ", 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 filter rule list */ 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) { i = F_AC; if (opts & OPT_OUTQUE) { fp = (struct frentry *)fiop->f_acctout[set]; i++; } else if (opts & OPT_INQUE) fp = (struct frentry *)fiop->f_acctin[set]; else { FPRINTF(stderr, "No -i or -o given with -a\n"); return; } } else 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) { FPRINTF(stderr, "empty list for %s%s\n", (opts & OPT_INACTIVE) ? "inactive " : "", filters[i]); return; } printlist(fp); } static void showipstates(fd, ipsp) int fd; ips_stat_t *ipsp; { ipstate_t *istab[IPSTATE_SIZE], ips; int i; 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", ipsp->iss_max, ipsp->iss_nomem); PRINTF("\t%lu active\n\t%lu expired\n\t%lu closed\n", ipsp->iss_active, ipsp->iss_expire, ipsp->iss_fin); if (kmemcpy((char *)istab, (u_long)ipsp->iss_table, sizeof(istab))) return; for (i = 0; i < IPSTATE_SIZE; i++) while (istab[i]) { if (kmemcpy((char *)&ips, (u_long)istab[i], sizeof(ips)) == -1) break; PRINTF("%s -> ", inet_ntoa(ips.is_src)); PRINTF("%s ttl %ld pass %d pr %d state %d/%d\n", inet_ntoa(ips.is_dst), ips.is_age, ips.is_pass, ips.is_p, ips.is_state[0], ips.is_state[1]); #ifdef USE_QUAD_T PRINTF("\tpkts %qd bytes %qd", (long long)ips.is_pkts, (long long)ips.is_bytes); #else PRINTF("\tpkts %ld bytes %ld", ips.is_pkts, ips.is_bytes); #endif if (ips.is_p == IPPROTO_TCP) PRINTF("\t%hu -> %hu %lu:%lu %hu:%hu", ntohs(ips.is_sport), ntohs(ips.is_dport), ips.is_seq, ips.is_ack, ips.is_swin, ips.is_dwin); else if (ips.is_p == IPPROTO_UDP) PRINTF(" %hu -> %hu", ntohs(ips.is_sport), ntohs(ips.is_dport)); else if (ips.is_p == IPPROTO_ICMP) PRINTF(" %hu %hu %d", ips.is_icmp.ics_id, ips.is_icmp.ics_seq, ips.is_icmp.ics_type); PRINTF("\n\t"); if (ips.is_pass & FR_PASS) { PRINTF("pass"); } else if (ips.is_pass & FR_BLOCK) { PRINTF("block"); if (ips.is_pass & FR_RETICMP) PRINTF(" return-icmp"); if (ips.is_pass & FR_RETRST) PRINTF(" return-rst"); } else if ((ips.is_pass & FR_LOGMASK) == FR_LOG) { PRINTF("log"); if (ips.is_pass & FR_LOGBODY) PRINTF(" body"); if (ips.is_pass & FR_LOGFIRST) PRINTF(" first"); } else if (ips.is_pass & FR_ACCOUNT) PRINTF("count"); if (ips.is_pass & FR_OUTQUE) PRINTF(" out"); else PRINTF(" in"); if ((ips.is_pass & (FR_LOGB|FR_LOGP)) != 0) { PRINTF(" log"); if (ips.is_pass & FR_LOGBODY) PRINTF(" body"); if (ips.is_pass & FR_LOGFIRST) PRINTF(" first"); if (ips.is_pass & FR_LOGORBLOCK) PRINTF(" or-block"); } if (ips.is_pass & FR_QUICK) PRINTF(" quick"); if (ips.is_pass & FR_KEEPFRAG) PRINTF(" keep frags"); /* a given; no? */ if (ips.is_pass & FR_KEEPSTATE) PRINTF(" keep state"); PRINTF("\n"); PRINTF("\tpkt_flags & %x = %x,\t", ips.is_flags & 0xf, ips.is_flags >> 4); PRINTF("\tpkt_options & %x = %x\n", ips.is_optmsk, ips.is_opt); PRINTF("\tpkt_security & %x = %x, pkt_auth & %x = %x\n", ips.is_secmsk, ips.is_sec, ips.is_authmsk, ips.is_auth); istab[i] = ips.is_next; } } static void showfrstates(fd, ifsp) int fd; ipfrstat_t *ifsp; { struct ipfr *ipfrtab[IPFT_SIZE], ifr; int i; 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; for (i = 0; i < IPFT_SIZE; i++) while (ipfrtab[i]) { if (kmemcpy((char *)&ifr, (u_long)ipfrtab[i], sizeof(ifr)) == -1) break; PRINTF("%s -> ", inet_ntoa(ifr.ipfr_src)); PRINTF("%s %d %d %d %#02x = %#x\n", inet_ntoa(ifr.ipfr_dst), ifr.ipfr_id, ifr.ipfr_ttl, ifr.ipfr_p, ifr.ipfr_tos, ifr.ipfr_pass); ipfrtab[i] = ifr.ipfr_next; } } static void showauthstates(fd, asp) int fd; fr_authstat_t *asp; { #ifdef USE_QUAD_T printf("Authorisation hits: %qd\tmisses %qd\n", (long long)asp->fas_hits, (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); }