/* $NetBSD: fils.c,v 1.20 2002/09/20 15:00:06 mycroft Exp $ */ /* * Copyright (C) 1993-2001 by Darren Reed. * * See the IPFILTER.LICENCE file for details on licencing. */ #ifdef __FreeBSD__ # ifndef __FreeBSD_cc_version # include # else # if __FreeBSD_cc_version < 430000 # include # endif # endif #endif #ifdef __sgi # include #endif #include #include #if !defined(__SVR4) && !defined(__svr4__) # include #endif #include #include #include #include #if defined(STATETOP) # if defined(_BSDI_VERSION) # undef STATETOP) # endif # if defined(__FreeBSD__) && \ (!defined(__FreeBSD_version) || (__FreeBSD_version < 430000)) # undef STATETOP # endif # if defined(__NetBSD_Version__) # if (__NetBSD_Version__ < 105000000) # undef STATETOP # else # include # define USE_POLL # endif # endif # if defined(sun) # if defined(__svr4__) || defined(__SVR4) # include # else # undef STATETOP /* NOT supported on SunOS4 */ # endif # endif #endif #include #include #include #include #include #include #include #include #include #include #include #include #if __FreeBSD_version >= 300000 # include #endif #include #include #include #include #if defined(STATETOP) && !defined(linux) # include # include #endif #include "netinet/ip_compat.h" #include "netinet/ip_fil.h" #include "ipf.h" #include "netinet/ip_nat.h" #include "netinet/ip_frag.h" #include "netinet/ip_state.h" #include "netinet/ip_proxy.h" #include "netinet/ip_auth.h" #ifdef STATETOP # include "netinet/ipl.h" # include # if SOLARIS || defined(__NetBSD__) || defined(_BSDI_VERSION) || \ defined(__sgi) # ifdef ERR # undef ERR # endif # include # else /* SOLARIS */ # include # endif /* SOLARIS */ #endif /* STATETOP */ #include "kmem.h" #if defined(__NetBSD__) || (__OpenBSD__) # include #endif #if !defined(lint) static const char sccsid[] __attribute__((__unused__)) = "@(#)fils.c 1.21 4/20/96 (C) 1993-2000 Darren Reed"; static const char rcsid[] __attribute__((__unused__)) = "@(#)Id: fils.c,v 2.21.2.36 2002/06/27 14:29:16 darrenr Exp"; #endif extern char *optarg; extern int optind; #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; int use_inet6 = 0; int live_kernel = 1; #ifdef STATETOP #define STSTRSIZE 80 #define STGROWSIZE 16 #define HOSTNMLEN 40 #define STSORT_PR 0 #define STSORT_PKTS 1 #define STSORT_BYTES 2 #define STSORT_TTL 3 #define STSORT_SRCIP 4 #define STSORT_DSTIP 5 #define STSORT_MAX STSORT_DSTIP #define STSORT_DEFAULT STSORT_BYTES typedef struct statetop { union i6addr st_src; union i6addr st_dst; u_short st_sport; u_short st_dport; u_char st_p; u_char st_state[2]; U_QUAD_T st_pkts; U_QUAD_T st_bytes; u_long st_age; } statetop_t; #endif extern int main __P((int, char *[])); static void showstats __P((friostat_t *, u_32_t)); static void showfrstates __P((ipfrstat_t *)); static void showlist __P((friostat_t *)); static void showipstates __P((ips_stat_t *)); static void showauthstates __P((fr_authstat_t *)); static void showgroups __P((friostat_t *)); static void Usage __P((char *)); static void printlist __P((frentry_t *)); static void parse_ipportstr __P((const char *, struct in_addr *, int *)); static int ipfstate_live __P((char *, friostat_t **, ips_stat_t **, ipfrstat_t **, fr_authstat_t **, u_32_t *)); static void ipfstate_dead __P((char *, friostat_t **, ips_stat_t **, ipfrstat_t **, fr_authstat_t **, u_32_t *)); #ifdef STATETOP static void topipstates __P((struct in_addr, struct in_addr, int, int, int, int, int)); static char *ttl_to_string __P((long)); static int sort_p __P((const void *, const void *)); static int sort_pkts __P((const void *, const void *)); static int sort_bytes __P((const void *, const void *)); static int sort_ttl __P((const void *, const void *)); static int sort_srcip __P((const void *, const void *)); static int sort_dstip __P((const void *, const void *)); #endif #if SOLARIS void showqiflist __P((char *)); #endif static void Usage(name) char *name; { #ifdef USE_INET6 fprintf(stderr, "Usage: %s [-6aAfhIinosv] [-d ]\n", name); #else fprintf(stderr, "Usage: %s [-aAfhIinosv] [-d ]\n", name); #endif fprintf(stderr, "\t\t[-M corefile] [-N symbol-list]\n"); fprintf(stderr, " %s -t [-S source address] [-D destination address] [-P protocol] [-T refreshtime] [-C] [-d ]\n", name); exit(1); } int main(argc,argv) int argc; char *argv[]; { fr_authstat_t frauthst; fr_authstat_t *frauthstp = &frauthst; friostat_t fio; friostat_t *fiop = &fio; ips_stat_t ipsst; ips_stat_t *ipsstp = &ipsst; ipfrstat_t ifrst; ipfrstat_t *ifrstp = &ifrst; char *device = IPL_NAME, *memf = NULL; char *kern = NULL; int c, myoptind; struct protoent *proto; int protocol = -1; /* -1 = wild card for any protocol */ int refreshtime = 1; /* default update time */ int sport = -1; /* -1 = wild card for any source port */ int dport = -1; /* -1 = wild card for any dest port */ int topclosed = 0; /* do not show closed tcp sessions */ struct in_addr saddr, daddr; u_32_t frf; saddr.s_addr = INADDR_ANY; /* default any source addr */ daddr.s_addr = INADDR_ANY; /* default any dest addr */ /* * Parse these two arguments now lest there be any buffer overflows * in the parsing of the rest. */ myoptind = optind; while ((c = getopt(argc, argv, "6aACfghIilnoqstvd:D:M:N:P:S:T:")) != -1) switch (c) { case 'M' : memf = optarg; live_kernel = 0; break; case 'N' : kern = optarg; live_kernel = 0; break; } optind = myoptind; if (kern != NULL || memf != NULL) { (void)setuid(getuid()); (void)setgid(getgid()); } if (openkmem(kern, memf) == -1) exit(-1); (void)setuid(getuid()); (void)setgid(getgid()); while ((c = getopt(argc, argv, "6aACfghIilnoqstvd:D:M:N:P:S:T:")) != -1) { switch (c) { #ifdef USE_INET6 case '6' : use_inet6 = 1; break; #endif case 'a' : opts |= OPT_ACCNT|OPT_SHOWLIST; break; case 'A' : device = IPAUTH_NAME; opts |= OPT_AUTHSTATS; break; case 'C' : topclosed = 1; break; case 'd' : device = optarg; break; case 'D' : parse_ipportstr(optarg, &daddr, &dport); break; case 'f' : opts |= OPT_FRSTATES; break; case 'g' : opts |= OPT_GROUPS; break; case 'h' : opts |= OPT_HITS; break; case 'i' : opts |= OPT_INQUE|OPT_SHOWLIST; break; case 'I' : opts |= OPT_INACTIVE; break; case 'l' : opts |= OPT_SHOWLIST; break; case 'M' : break; case 'N' : break; case 'n' : opts |= OPT_SHOWLINENO; break; case 'o' : opts |= OPT_OUTQUE|OPT_SHOWLIST; break; case 'P' : if ((proto = getprotobyname(optarg)) != NULL) { protocol = proto->p_proto; } else if (!sscanf(optarg, "%ud", &protocol) || (protocol < 0)) { fprintf(stderr, "%s : Invalid protocol: %s\n", argv[0], optarg); exit(-2); } break; case 'q' : #if SOLARIS showqiflist(kern); exit(0); break; #else fprintf(stderr, "-q only availble on Solaris\n"); exit(1); break; #endif case 's' : opts |= OPT_IPSTATES; break; case 'S' : parse_ipportstr(optarg, &saddr, &sport); break; case 't' : #ifdef STATETOP opts |= OPT_STATETOP; break; #else fprintf(stderr, "%s : state top facility not compiled in\n", argv[0]); exit(-2); #endif case 'T' : if (!sscanf(optarg, "%d", &refreshtime) || (refreshtime <= 0)) { fprintf(stderr, "%s : Invalid refreshtime < 1 : %s\n", argv[0], optarg); exit(-2); } break; case 'v' : opts |= OPT_VERBOSE; break; default : Usage(argv[0]); break; } } if (live_kernel == 1) { bzero((char *)&fio, sizeof(fio)); bzero((char *)&ipsst, sizeof(ipsst)); bzero((char *)&ifrst, sizeof(ifrst)); ipfstate_live(device, &fiop, &ipsstp, &ifrstp, &frauthstp, &frf); } else ipfstate_dead(kern, &fiop, &ipsstp, &ifrstp, &frauthstp, &frf); if (opts & OPT_IPSTATES) { showipstates(ipsstp); } else if (opts & OPT_SHOWLIST) { showlist(fiop); if ((opts & OPT_OUTQUE) && (opts & OPT_INQUE)){ opts &= ~OPT_OUTQUE; showlist(fiop); } } else { if (opts & OPT_FRSTATES) showfrstates(ifrstp); #ifdef STATETOP else if (opts & OPT_STATETOP) topipstates(saddr, daddr, sport, dport, protocol, refreshtime, topclosed); #endif else if (opts & OPT_AUTHSTATS) showauthstates(frauthstp); else if (opts & OPT_GROUPS) showgroups(fiop); else showstats(fiop, frf); } return 0; } /* * Fill in the stats structures from the live kernel, using a combination * of ioctl's and copying directly from kernel memory. */ int ipfstate_live(device, fiopp, ipsstpp, ifrstpp, frauthstpp, frfp) char *device; friostat_t **fiopp; ips_stat_t **ipsstpp; ipfrstat_t **ifrstpp; fr_authstat_t **frauthstpp; u_32_t *frfp; { int fd; if ((fd = open(device, O_RDONLY)) < 0) { perror("open"); exit(-1); } if (!(opts & OPT_AUTHSTATS) && ioctl(fd, SIOCGETFS, fiopp) == -1) { perror("ioctl(ipf:SIOCGETFS)"); exit(-1); } if ((opts & OPT_IPSTATES)) { int sfd = open(IPL_STATE, O_RDONLY); if (sfd == -1) { perror("open"); exit(-1); } if ((ioctl(sfd, SIOCGETFS, ipsstpp) == -1)) { perror("ioctl(state:SIOCGETFS)"); exit(-1); } close(sfd); } if ((opts & OPT_FRSTATES) && (ioctl(fd, SIOCGFRST, ifrstpp) == -1)) { perror("ioctl(SIOCGFRST)"); exit(-1); } if (opts & OPT_VERBOSE) PRINTF("opts %#x name %s\n", opts, device); if ((opts & OPT_AUTHSTATS) && (ioctl(fd, SIOCATHST, frauthstpp) == -1)) { perror("ioctl(SIOCATHST)"); exit(-1); } if (ioctl(fd, SIOCGETFF, frfp) == -1) perror("ioctl(SIOCGETFF)"); return fd; } /* * Build up the stats structures from data held in the "core" memory. * This is mainly useful when looking at data in crash dumps and ioctl's * just won't work any more. */ void ipfstate_dead(kernel, fiopp, ipsstpp, ifrstpp, frauthstpp, frfp) char *kernel; friostat_t **fiopp; ips_stat_t **ipsstpp; ipfrstat_t **ifrstpp; fr_authstat_t **frauthstpp; u_32_t *frfp; { static fr_authstat_t frauthst, *frauthstp; static ips_stat_t ipsst, *ipsstp; static ipfrstat_t ifrst, *ifrstp; static friostat_t fio, *fiop; void *rules[2][2]; struct nlist deadlist[42] = { { "fr_authstats" }, /* 0 */ { "fae_list" }, { "ipauth" }, { "fr_authlist" }, { "fr_authstart" }, { "fr_authend" }, /* 5 */ { "fr_authnext" }, { "fr_auth" }, { "fr_authused" }, { "fr_authsize" }, { "fr_defaultauthage" }, /* 10 */ { "fr_authpkts" }, { "fr_auth_lock" }, { "frstats" }, { "ips_stats" }, { "ips_num" }, /* 15 */ { "ips_wild" }, { "ips_list" }, { "ips_table" }, { "fr_statemax" }, { "fr_statesize" }, /* 20 */ { "fr_state_doflush" }, { "fr_state_lock" }, { "ipfr_heads" }, { "ipfr_nattab" }, { "ipfr_stats" }, /* 25 */ { "ipfr_inuse" }, { "fr_ipfrttl" }, { "fr_frag_lock" }, { "ipfr_timer_id" }, { "fr_nat_lock" }, /* 30 */ { "ipfilter" }, { "ipfilter6" }, { "ipacct" }, { "ipacct6" }, { "ipl_frouteok" }, /* 35 */ { "fr_running" }, { "ipfgroups" }, { "fr_active" }, { "fr_pass" }, { "fr_flags" }, /* 40 */ { NULL } }; frauthstp = &frauthst; ipsstp = &ipsst; ifrstp = &ifrst; fiop = &fio; *frfp = 0; *fiopp = fiop; *ipsstpp = ipsstp; *ifrstpp = ifrstp; *frauthstpp = frauthstp; bzero((char *)fiop, sizeof(*fiop)); bzero((char *)ipsstp, sizeof(*ipsstp)); bzero((char *)ifrstp, sizeof(*ifrstp)); bzero((char *)frauthstp, sizeof(*frauthstp)); if (nlist(kernel, deadlist) == -1) { fprintf(stderr, "nlist error\n"); return; } /* * This is for SIOCGETFF. */ kmemcpy((char *)frfp, (u_long)deadlist[40].n_value, sizeof(*frfp)); /* * f_locks is a combination of the lock variable from each part of * ipfilter (state, auth, nat, fragments). */ kmemcpy((char *)fiop, (u_long)deadlist[13].n_value, sizeof(*fiop)); kmemcpy((char *)&fiop->f_locks[0], (u_long)deadlist[22].n_value, sizeof(fiop->f_locks[0])); kmemcpy((char *)&fiop->f_locks[0], (u_long)deadlist[30].n_value, sizeof(fiop->f_locks[1])); kmemcpy((char *)&fiop->f_locks[2], (u_long)deadlist[28].n_value, sizeof(fiop->f_locks[2])); kmemcpy((char *)&fiop->f_locks[3], (u_long)deadlist[12].n_value, sizeof(fiop->f_locks[3])); /* * Get pointers to each list of rules (active, inactive, in, out) */ kmemcpy((char *)&rules, (u_long)deadlist[31].n_value, sizeof(rules)); fiop->f_fin[0] = rules[0][0]; fiop->f_fin[1] = rules[0][1]; fiop->f_fout[0] = rules[1][0]; fiop->f_fout[1] = rules[1][1]; /* * Same for IPv6, except make them null if support for it is not * being compiled in. */ #ifdef USE_INET6 kmemcpy((char *)&rules, (u_long)deadlist[32].n_value, sizeof(rules)); fiop->f_fin6[0] = rules[0][0]; fiop->f_fin6[1] = rules[0][1]; fiop->f_fout6[0] = rules[1][0]; fiop->f_fout6[1] = rules[1][1]; #else fiop->f_fin6[0] = NULL; fiop->f_fin6[1] = NULL; fiop->f_fout6[0] = NULL; fiop->f_fout6[1] = NULL; #endif /* * Now get accounting rules pointers. */ kmemcpy((char *)&rules, (u_long)deadlist[33].n_value, sizeof(rules)); fiop->f_acctin[0] = rules[0][0]; fiop->f_acctin[1] = rules[0][1]; fiop->f_acctout[0] = rules[1][0]; fiop->f_acctout[1] = rules[1][1]; #ifdef USE_INET6 kmemcpy((char *)&rules, (u_long)deadlist[34].n_value, sizeof(rules)); fiop->f_acctin6[0] = rules[0][0]; fiop->f_acctin6[1] = rules[0][1]; fiop->f_acctout6[0] = rules[1][0]; fiop->f_acctout6[1] = rules[1][1]; #else fiop->f_acctin6[0] = NULL; fiop->f_acctin6[1] = NULL; fiop->f_acctout6[0] = NULL; fiop->f_acctout6[1] = NULL; #endif /* * A collection of "global" variables used inside the kernel which * are all collected in friostat_t via ioctl. */ kmemcpy((char *)&fiop->f_froute, (u_long)deadlist[35].n_value, sizeof(fiop->f_froute)); kmemcpy((char *)&fiop->f_running, (u_long)deadlist[36].n_value, sizeof(fiop->f_running)); kmemcpy((char *)&fiop->f_groups, (u_long)deadlist[37].n_value, sizeof(fiop->f_groups)); kmemcpy((char *)&fiop->f_active, (u_long)deadlist[38].n_value, sizeof(fiop->f_active)); kmemcpy((char *)&fiop->f_defpass, (u_long)deadlist[39].n_value, sizeof(fiop->f_defpass)); /* * Build up the state information stats structure. */ kmemcpy((char *)ipsstp, (u_long)deadlist[14].n_value, sizeof(*ipsstp)); kmemcpy((char *)&ipsstp->iss_active, (u_long)deadlist[15].n_value, sizeof(ipsstp->iss_active)); ipsstp->iss_table = (void *)deadlist[18].n_value; ipsstp->iss_list = (void *)deadlist[17].n_value; /* * Build up the authentiation information stats structure. */ kmemcpy((char *)frauthstp, (u_long)deadlist[0].n_value, sizeof(*frauthstp)); frauthstp->fas_faelist = (void *)deadlist[1].n_value; /* * Build up the fragment information stats structure. */ kmemcpy((char *)ifrstp, (u_long)deadlist[25].n_value, sizeof(*ifrstp)); ifrstp->ifs_table = (void *)deadlist[23].n_value; ifrstp->ifs_nattab = (void *)deadlist[24].n_value; kmemcpy((char *)&ifrstp->ifs_inuse, (u_long)deadlist[26].n_value, sizeof(ifrstp->ifs_inuse)); } /* * Display the kernel stats for packets blocked and passed and other * associated running totals which are kept. */ static void showstats(fp, frf) struct friostat *fp; u_32_t frf; { #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); PRINTF("copied messages:\tin %lu\tout %lu\n", fp->f_st[0].fr_copy, fp->f_st[1].fr_copy); #endif #ifdef USE_INET6 PRINTF(" IPv6 packets:\t\tin %lu out %lu\n", fp->f_st[0].fr_ipv6[0], fp->f_st[0].fr_ipv6[1]); #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 short %lu\n", fp->f_st[0].fr_acct, fp->f_st[0].fr_short); 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 short %lu\n", fp->f_st[1].fr_acct, fp->f_st[1].fr_short); 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("Invalid source(in):\t%lu\n", fp->f_st[0].fr_badsrc); 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"); } /* * Print out a list of rules from the kernel, starting at the one passed. */ 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("%qu ", (unsigned long long) fp->fr_hits); #else PRINTF("%lu ", fp->fr_hits); #endif if (opts & (OPT_ACCNT|OPT_VERBOSE)) #ifdef USE_QUAD_T PRINTF("%qu ", (unsigned long long) fp->fr_bytes); #else PRINTF("%lu ", 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 all of the asked for rule sets, using the stats struct as * the base from which to get the pointers. */ 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 { #ifdef USE_INET6 if ((use_inet6) && (opts & OPT_OUTQUE)) { i = F_OUT; fp = (struct frentry *)fiop->f_fout6[set]; } else if ((use_inet6) && (opts & OPT_INQUE)) { i = F_IN; fp = (struct frentry *)fiop->f_fin6[set]; } else #endif 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); } /* * Display ipfilter stateful filtering information */ static void showipstates(ipsp) ips_stat_t *ipsp; { ipstate_t *istab[IPSTATE_SIZE]; /* * If a list of states hasn't been asked for, only print out stats */ if (!(opts & OPT_SHOWLIST)) { 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\t%lu bkts in use\n", ipsp->iss_max, ipsp->iss_nomem, ipsp->iss_inuse); PRINTF("\t%lu active\n\t%lu expired\n\t%lu closed\n", ipsp->iss_active, ipsp->iss_expire, ipsp->iss_fin); return; } if (kmemcpy((char *)istab, (u_long)ipsp->iss_table, sizeof(istab))) return; /* * Print out all the state information currently held in the kernel. */ while (ipsp->iss_list != NULL) { ipsp->iss_list = printstate(ipsp->iss_list, opts); } } #if SOLARIS /* * Displays the list of interfaces of which IPFilter has taken control in * Solaris. */ void showqiflist(kern) char *kern; { struct nlist qifnlist[2] = { { "qif_head" }, { NULL } }; qif_t qif, *qf; ill_t ill; if (kern == NULL) kern = "/dev/ksyms"; if (nlist(kern, qifnlist) == -1) { fprintf(stderr, "nlist error\n"); return; } printf("List of interfaces bound by IPFilter:\n"); if (kmemcpy((char *)&qf, (u_long)qifnlist[0].n_value, sizeof(qf))) return; while (qf) { if (kmemcpy((char *)&qif, (u_long)qf, sizeof(qif))) break; if (kmemcpy((char *)&ill, (u_long)qif.qf_ill, sizeof(ill))) ill.ill_ppa = -1; printf("Name: %-8s Header Length: %2d SAP: %s (%04x) PPA %d", qif.qf_name, qif.qf_hl, #ifdef IP6_DL_SAP (qif.qf_sap == IP6_DL_SAP) ? "IPv6" : "IPv4" #else "IPv4" #endif , qif.qf_sap, ill.ill_ppa); printf(" %ld %ld", qif.qf_incnt, qif.qf_outcnt); qf = qif.qf_next; putchar('\n'); } } #endif #ifdef STATETOP static void topipstates(saddr, daddr, sport, dport, protocol, refreshtime, topclosed) struct in_addr saddr; struct in_addr daddr; int sport; int dport; int protocol; int refreshtime; int topclosed; { char str1[STSTRSIZE], str2[STSTRSIZE], str3[STSTRSIZE], str4[STSTRSIZE]; int maxtsentries = 0, reverse = 0, sorting = STSORT_DEFAULT; int i, j, sfd, winx, tsentry, maxx, maxy, redraw = 0; ipstate_t *istab[IPSTATE_SIZE], ips; ips_stat_t ipsst, *ipsstp = &ipsst; statetop_t *tstable = NULL, *tp; char hostnm[HOSTNMLEN]; struct protoent *proto; #ifdef USE_POLL struct pollfd set[1]; #else struct timeval selecttimeout; fd_set readfd; #endif int c = 0; time_t t; /* open state device */ if ((sfd = open(IPL_STATE, O_RDONLY)) == -1) { perror("open"); exit(-1); } /* init ncurses stuff */ initscr(); cbreak(); noecho(); /* init hostname */ gethostname(hostnm, sizeof(hostnm) - 1); hostnm[sizeof(hostnm) - 1] = '\0'; /* repeat until user aborts */ while ( 1 ) { /* get state table */ bzero((char *)&ipsst, sizeof(&ipsst)); if ((ioctl(sfd, SIOCGETFS, &ipsstp) == -1)) { perror("ioctl(SIOCGETFS)"); exit(-1); } if (kmemcpy((char *)istab, (u_long)ipsstp->iss_table, sizeof(ips))) return; /* clear the history */ tsentry = -1; /* read the state table and store in tstable */ while (ipsstp->iss_list) { if (kmemcpy((char *)&ips, (u_long)ipsstp->iss_list, sizeof(ips))) break; ipsstp->iss_list = ips.is_next; if (((saddr.s_addr == INADDR_ANY) || (saddr.s_addr == ips.is_saddr)) && ((daddr.s_addr == INADDR_ANY) || (daddr.s_addr == ips.is_daddr)) && ((protocol < 0) || (protocol == ips.is_p)) && (((ips.is_p != IPPROTO_TCP) && (ips.is_p != IPPROTO_UDP)) || (((sport < 0) || (htons(sport) == ips.is_sport)) && ((dport < 0) || (htons(dport) == ips.is_dport)))) && (topclosed || (ips.is_p != IPPROTO_TCP) || (ips.is_state[0] < TCPS_LAST_ACK) || (ips.is_state[1] < TCPS_LAST_ACK))) { /* * if necessary make room for this state * entry */ tsentry++; if (!maxtsentries || (tsentry == maxtsentries)) { maxtsentries += STGROWSIZE; tstable = realloc(tstable, maxtsentries * sizeof(statetop_t)); if (!tstable) { perror("malloc"); exit(-1); } } /* fill structure */ tp = tstable + tsentry; tp->st_src = ips.is_src; tp->st_dst = ips.is_dst; tp->st_p = ips.is_p; tp->st_state[0] = ips.is_state[0]; tp->st_state[1] = ips.is_state[1]; tp->st_pkts = ips.is_pkts; tp->st_bytes = ips.is_bytes; tp->st_age = ips.is_age; if ((ips.is_p == IPPROTO_TCP) || (ips.is_p == IPPROTO_UDP)) { tp->st_sport = ips.is_sport; tp->st_dport = ips.is_dport; } } } /* sort the array */ if (tsentry != -1) switch (sorting) { case STSORT_PR: qsort(tstable, tsentry + 1, sizeof(statetop_t), sort_p); break; case STSORT_PKTS: qsort(tstable, tsentry + 1, sizeof(statetop_t), sort_pkts); break; case STSORT_BYTES: qsort(tstable, tsentry + 1, sizeof(statetop_t), sort_bytes); break; case STSORT_TTL: qsort(tstable, tsentry + 1, sizeof(statetop_t), sort_ttl); break; case STSORT_SRCIP: qsort(tstable, tsentry + 1, sizeof(statetop_t), sort_srcip); break; case STSORT_DSTIP: qsort(tstable, tsentry + 1, sizeof(statetop_t), sort_dstip); break; default: break; } /* print title */ erase(); getmaxyx(stdscr, maxy, maxx); attron(A_BOLD); winx = 0; move(winx,0); sprintf(str1, "%s - %s - state top", hostnm, IPL_VERSION); for (j = 0 ; j < (maxx - 8 - strlen(str1)) / 2; j++) printw(" "); printw("%s", str1); attroff(A_BOLD); /* just for fun add a clock */ move(winx, maxx - 8); t = time(NULL); strftime(str1, 80, "%T", localtime(&t)); printw("%s\n", str1); /* * print the display filters, this is placed in the loop, * because someday I might add code for changing these * while the programming is running :-) */ if (sport >= 0) sprintf(str1, "%s,%d", inet_ntoa(saddr), sport); else sprintf(str1, "%s", inet_ntoa(saddr)); if (dport >= 0) sprintf(str2, "%s,%d", inet_ntoa(daddr), dport); else sprintf(str2, "%s", inet_ntoa(daddr)); if (protocol < 0) strcpy(str3, "any"); else if ((proto = getprotobynumber(protocol)) != NULL) sprintf(str3, "%s", proto->p_name); else sprintf(str3, "%d", protocol); switch (sorting) { case STSORT_PR: sprintf(str4, "proto"); break; case STSORT_PKTS: sprintf(str4, "# pkts"); break; case STSORT_BYTES: sprintf(str4, "# bytes"); break; case STSORT_TTL: sprintf(str4, "ttl"); break; case STSORT_SRCIP: sprintf(str4, "srcip"); break; case STSORT_DSTIP: sprintf(str4, "dstip"); break; default: sprintf(str4, "unknown"); break; } if (reverse) strcat(str4, " (reverse)"); winx += 2; move(winx,0); printw("Src = %s Dest = %s Proto = %s Sorted by = %s\n\n", str1, str2, str3, str4); /* print column description */ winx += 2; move(winx,0); attron(A_BOLD); printw("%-21s %-21s %3s %4s %7s %9s %9s\n", "Source IP", "Destination IP", "ST", "PR", "#pkts", "#bytes", "ttl"); attroff(A_BOLD); /* print all the entries */ tp = tstable; if (reverse) tp += tsentry; if (tsentry > maxy - 6) tsentry = maxy - 6; for (i = 0; i <= tsentry; i++) { /* print src/dest and port */ if ((tp->st_p == IPPROTO_TCP) || (tp->st_p == IPPROTO_UDP)) { sprintf(str1, "%s,%hu", inet_ntoa(tp->st_src.in4), ntohs(tp->st_sport)); sprintf(str2, "%s,%hu", inet_ntoa(tp->st_dst.in4), ntohs(tp->st_dport)); } else { sprintf(str1, "%s", inet_ntoa(tp->st_src.in4)); sprintf(str2, "%s", inet_ntoa(tp->st_dst.in4)); } winx++; move(winx, 0); printw("%-21s %-21s", str1, str2); /* print state */ sprintf(str1, "%X/%X", tp->st_state[0], tp->st_state[1]); printw(" %3s", str1); /* print proto */ proto = getprotobynumber(tp->st_p); if (proto) { strncpy(str1, proto->p_name, 4); str1[4] = '\0'; } else { sprintf(str1, "%d", tp->st_p); } printw(" %4s", str1); /* print #pkt/#bytes */ #ifdef USE_QUAD_T printw(" %7qu %9qu", (unsigned long long) tp->st_pkts, (unsigned long long) tp->st_bytes); #else printw(" %7lu %9lu", tp->st_pkts, tp->st_bytes); #endif printw(" %9s", ttl_to_string(tp->st_age)); if (reverse) tp--; else tp++; } /* screen data structure is filled, now update the screen */ if (redraw) clearok(stdscr,1); refresh(); if (redraw) { clearok(stdscr,0); redraw = 0; } /* wait for key press or a 1 second time out period */ #ifdef USE_POLL set[0].fd = 0; set[0].events = POLLIN; poll(set, 1, refreshtime * 1000); if (set[0].revents & POLLIN) { #else selecttimeout.tv_sec = refreshtime; selecttimeout.tv_usec = 0; FD_ZERO(&readfd); FD_SET(0, &readfd); select(1, &readfd, NULL, NULL, &selecttimeout); /* if key pressed, read all waiting keys */ if (FD_ISSET(0, &readfd)) { #endif c = wgetch(stdscr); if (c == ERR) continue; if (isalpha(c) && isupper(c)) c = tolower(c); if (c == 'l') { redraw = 1; } else if (c == 'q') { break; /* exits while() loop */ } else if (c == 'r') { reverse = !reverse; } else if (c == 's') { sorting++; if (sorting > STSORT_MAX) sorting = 0; } } } /* while */ close(sfd); printw("\n"); nocbreak(); endwin(); } #endif /* * Show fragment cache information that's held in the kernel. */ static void showfrstates(ifsp) ipfrstat_t *ifsp; { struct ipfr *ipfrtab[IPFT_SIZE], ifr; frentry_t fr; int i; /* * print out the numeric statistics */ 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; /* * Print out the contents (if any) of the fragment cache table. */ for (i = 0; i < IPFT_SIZE; i++) while (ipfrtab[i]) { if (kmemcpy((char *)&ifr, (u_long)ipfrtab[i], sizeof(ifr)) == -1) break; PRINTF("%s -> ", hostname(4, &ifr.ipfr_src)); if (kmemcpy((char *)&fr, (u_long)ifr.ipfr_rule, sizeof(fr)) == -1) break; PRINTF("%s %d %d %d %#02x = %#x\n", hostname(4, &ifr.ipfr_dst), ifr.ipfr_id, ifr.ipfr_ttl, ifr.ipfr_p, ifr.ipfr_tos, fr.fr_flags); ipfrtab[i] = ifr.ipfr_next; } if (kmemcpy((char *)ipfrtab, (u_long)ifsp->ifs_nattab,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("NAT: %s -> ", hostname(4, &ifr.ipfr_src)); if (kmemcpy((char *)&fr, (u_long)ifr.ipfr_rule, sizeof(fr)) == -1) break; PRINTF("%s %d %d %d %#02x = %#x\n", hostname(4, &ifr.ipfr_dst), ifr.ipfr_id, ifr.ipfr_ttl, ifr.ipfr_p, ifr.ipfr_tos, fr.fr_flags); ipfrtab[i] = ifr.ipfr_next; } } /* * Show stats on how auth within IPFilter has been used */ static void showauthstates(asp) fr_authstat_t *asp; { frauthent_t *frap, fra; #ifdef USE_QUAD_T printf("Authorisation hits: %qu\tmisses %qu\n", (unsigned long long) asp->fas_hits, (unsigned 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); frap = asp->fas_faelist; while (frap) { if (kmemcpy((char *)&fra, (u_long)frap, sizeof(fra)) == -1) break; printf("age %ld\t", fra.fae_age); printfr(&fra.fae_fr); frap = fra.fae_next; } } /* * Display groups used for each of filter rules, accounting rules and * authentication, separately. */ static void showgroups(fiop) struct friostat *fiop; { static char *gnames[3] = { "Filter", "Accounting", "Authentication" }; frgroup_t *fp, grp; int on, off, i; on = fiop->f_active; off = 1 - on; for (i = 0; i < 3; i++) { printf("%s groups (active):\n", gnames[i]); for (fp = fiop->f_groups[i][on]; fp; fp = grp.fg_next) if (kmemcpy((char *)&grp, (u_long)fp, sizeof(grp))) break; else printf("%hu\n", grp.fg_num); printf("%s groups (inactive):\n", gnames[i]); for (fp = fiop->f_groups[i][off]; fp; fp = grp.fg_next) if (kmemcpy((char *)&grp, (u_long)fp, sizeof(grp))) break; else printf("%hu\n", grp.fg_num); } } static void parse_ipportstr(argument, ip, port) const char *argument; struct in_addr *ip; int *port; { char *s, *comma; /* make working copy of argument, Theoretically you must be able * to write to optarg, but that seems very ugly to me.... */ if ((s = malloc(strlen(argument) + 1)) == NULL) perror("malloc"); strcpy(s, argument); /* get port */ if ((comma = strchr(s, ',')) != NULL) { if (!strcasecmp(s, "any")) { *port = -1; } else if (!sscanf(comma + 1, "%d", port) || (*port < 0) || (*port > 65535)) { fprintf(stderr, "Invalid port specfication in %s\n", argument); exit(-2); } *comma = '\0'; } /* get ip address */ if (!strcasecmp(s, "any")) { ip->s_addr = INADDR_ANY; } else if (!inet_aton(s, ip)) { fprintf(stderr, "Invalid IP address: %s\n", s); exit(-2); } /* free allocated memory */ free(s); } #ifdef STATETOP static char ttlbuf[STSTRSIZE]; static char *ttl_to_string(ttl) long int ttl; { int hours, minutes, seconds; /* ttl is in half seconds */ ttl /= 2; hours = ttl / 3600; ttl = ttl % 3600; minutes = ttl / 60; seconds = ttl % 60; if (hours > 0 ) sprintf(ttlbuf, "%2d:%02d:%02d", hours, minutes, seconds); else sprintf(ttlbuf, "%2d:%02d", minutes, seconds); return ttlbuf; } static int sort_pkts(a, b) const void *a; const void *b; { register const statetop_t *ap = a; register const statetop_t *bp = b; if (ap->st_pkts == bp->st_pkts) return 0; else if (ap->st_pkts < bp->st_pkts) return 1; return -1; } static int sort_bytes(a, b) const void *a; const void *b; { register const statetop_t *ap = a; register const statetop_t *bp = b; if (ap->st_bytes == bp->st_bytes) return 0; else if (ap->st_bytes < bp->st_bytes) return 1; return -1; } static int sort_p(a, b) const void *a; const void *b; { register const statetop_t *ap = a; register const statetop_t *bp = b; if (ap->st_p == bp->st_p) return 0; else if (ap->st_p < bp->st_p) return 1; return -1; } static int sort_ttl(a, b) const void *a; const void *b; { register const statetop_t *ap = a; register const statetop_t *bp = b; if (ap->st_age == bp->st_age) return 0; else if (ap->st_age < bp->st_age) return 1; return -1; } static int sort_srcip(a, b) const void *a; const void *b; { register const statetop_t *ap = a; register const statetop_t *bp = b; if (ntohl(ap->st_src.in4.s_addr) == ntohl(bp->st_src.in4.s_addr)) return 0; else if (ntohl(ap->st_src.in4.s_addr) > ntohl(bp->st_src.in4.s_addr)) return 1; return -1; } static int sort_dstip(a, b) const void *a; const void *b; { register const statetop_t *ap = a; register const statetop_t *bp = b; if (ntohl(ap->st_dst.in4.s_addr) == ntohl(bp->st_dst.in4.s_addr)) return 0; else if (ntohl(ap->st_dst.in4.s_addr) > ntohl(bp->st_dst.in4.s_addr)) return 1; return -1; } #endif