/* $NetBSD: ipfstat.c,v 1.6 2004/07/23 05:39:04 martti Exp $ */ /* * Copyright (C) 1993-2001, 2003 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 #include #include #ifdef linux # include #else # include #endif #include #if defined(sun) && (defined(__svr4__) || defined(__SVR4)) # include #endif #include "ipf.h" #include "netinet/ipl.h" #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__) && (__NetBSD_Version__ < 105000000) # undef STATETOP # endif # if defined(sun) # if defined(__svr4__) || defined(__SVR4) # include # else # undef STATETOP /* NOT supported on SunOS4 */ # endif # endif #endif #if defined(STATETOP) && !defined(linux) # include # include #endif #ifdef STATETOP # include # 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[] = "@(#)fils.c 1.21 4/20/96 (C) 1993-2000 Darren Reed"; static const char rcsid[] = "@(#)Id: ipfstat.c,v 1.44.2.8 2004/07/18 04:11:37 darrenr Exp"; #endif #ifdef __hpux # define nlist nlist64 #endif extern char *optarg; extern int optind; extern int opterr; #define PRINTF (void)printf #define FPRINTF (void)fprintf #define F_IN 0 #define F_OUT 1 #define F_ACIN 2 #define F_ACOUT 3 static char *filters[4] = { "ipfilter(in)", "ipfilter(out)", "ipacct(in)", "ipacct(out)" }; static int state_logging = -1; int opts = 0; int use_inet6 = 0; int live_kernel = 1; int state_fd = -1; int ipf_fd = -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 { i6addr_t st_src; i6addr_t st_dst; u_short st_sport; u_short st_dport; u_char st_p; u_char st_v; u_char st_state[2]; U_QUAD_T st_pkts; U_QUAD_T st_bytes; u_long st_age; } statetop_t; #endif 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 *, char *)); static void parse_ipportstr __P((const char *, i6addr_t *, int *)); static void 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((i6addr_t, i6addr_t, int, int, int, int, int, int)); static void sig_break __P((int)); static void sig_resize __P((int)); static char *getip __P((int, i6addr_t *)); 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 static void usage(name) char *name; { #ifdef USE_INET6 fprintf(stderr, "Usage: %s [-6aAdfghIilnoRsv]\n", name); #else fprintf(stderr, "Usage: %s [-aAdfghIilnoRsv]\n", name); #endif fprintf(stderr, " %s [-M corefile] [-N symbol-list]\n", name); #ifdef USE_INET6 fprintf(stderr, " %s -t [-6C] ", name); #else fprintf(stderr, " %s -t [-C] ", name); #endif fprintf(stderr, "[-D destination address] [-P protocol] [-S source address] [-T refresh time]\n"); 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 *options, *kern = NULL; int c, myoptind; 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 */ i6addr_t saddr, daddr; u_32_t frf; #ifdef USE_INET6 options = "6aACdfghIilnostvD:M:N:P:RS:T:"; #else options = "aACdfghIilnostvD:M:N:P:RS:T:"; #endif saddr.in4.s_addr = INADDR_ANY; /* default any v4 source addr */ daddr.in4.s_addr = INADDR_ANY; /* default any v4 dest addr */ #ifdef USE_INET6 saddr.in6 = in6addr_any; /* default any v6 source addr */ daddr.in6 = in6addr_any; /* default any v6 dest addr */ #endif /* Don't warn about invalid flags when we run getopt for the 1st time */ opterr = 0; /* * Parse these two arguments now lest there be any buffer overflows * in the parsing of the rest. */ myoptind = optind; while ((c = getopt(argc, argv, options)) != -1) { switch (c) { case 'M' : memf = optarg; live_kernel = 0; break; case 'N' : kern = optarg; live_kernel = 0; break; } } optind = myoptind; if (live_kernel == 1) { if ((state_fd = open(IPSTATE_NAME, O_RDONLY)) == -1) { perror("open(IPSTATE_NAME)"); exit(-1); } if ((ipf_fd = open(device, O_RDONLY)) == -1) { fprintf(stderr, "open(%s)", device); perror(""); exit(-1); } } if (kern != NULL || memf != NULL) { (void)setgid(getgid()); (void)setuid(getuid()); } if (live_kernel == 1) (void) checkrev(device); if (openkmem(kern, memf) == -1) exit(-1); (void)setgid(getgid()); (void)setuid(getuid()); opterr = 1; while ((c = getopt(argc, argv, options)) != -1) { switch (c) { #ifdef USE_INET6 case '6' : use_inet6 = 1; break; #endif case 'a' : opts |= OPT_ACCNT|OPT_SHOWLIST; break; case 'A' : opts |= OPT_AUTHSTATS; break; case 'C' : topclosed = 1; break; case 'd' : opts |= OPT_DEBUG; 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' : protocol = getproto(optarg); if (protocol == -1) { fprintf(stderr, "%s: Invalid protocol: %s\n", argv[0], optarg); exit(-2); } break; case 'R' : opts |= OPT_NORESOLVE; break; 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, use_inet6 ? 6 : 4, 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. */ static void 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; { ipfobj_t ipfo; if (checkrev(device) == -1) { fprintf(stderr, "User/kernel version check failed\n"); exit(1); } if ((opts & OPT_AUTHSTATS) == 0) { bzero((caddr_t)&ipfo, sizeof(ipfo)); ipfo.ipfo_rev = IPFILTER_VERSION; ipfo.ipfo_size = sizeof(friostat_t); ipfo.ipfo_ptr = (void *)*fiopp; ipfo.ipfo_type = IPFOBJ_IPFSTAT; if (ioctl(ipf_fd, SIOCGETFS, &ipfo) == -1) { perror("ioctl(ipf:SIOCGETFS)"); exit(-1); } if (ioctl(ipf_fd, SIOCGETFF, frfp) == -1) perror("ioctl(SIOCGETFF)"); } if ((opts & OPT_IPSTATES) != 0) { bzero((caddr_t)&ipfo, sizeof(ipfo)); ipfo.ipfo_rev = IPFILTER_VERSION; ipfo.ipfo_size = sizeof(ips_stat_t); ipfo.ipfo_ptr = (void *)*ipsstpp; ipfo.ipfo_type = IPFOBJ_STATESTAT; if ((ioctl(state_fd, SIOCGETFS, &ipfo) == -1)) { perror("ioctl(state:SIOCGETFS)"); exit(-1); } if (ioctl(state_fd, SIOCGETLG, &state_logging) == -1) { perror("ioctl(state:SIOCGETLG)"); exit(-1); } } if ((opts & OPT_FRSTATES) != 0) { bzero((caddr_t)&ipfo, sizeof(ipfo)); ipfo.ipfo_rev = IPFILTER_VERSION; ipfo.ipfo_size = sizeof(ipfrstat_t); ipfo.ipfo_ptr = (void *)*ifrstpp; ipfo.ipfo_type = IPFOBJ_FRAGSTAT; if (ioctl(ipf_fd, SIOCGFRST, &ipfo) == -1) { perror("ioctl(SIOCGFRST)"); exit(-1); } } if (opts & OPT_VERBOSE) PRINTF("opts %#x name %s\n", opts, device); if ((opts & OPT_AUTHSTATS) != 0) { if (ipf_fd >= 0) { close(ipf_fd); ipf_fd = -1; } device = IPAUTH_NAME; if ((ipf_fd = open(device, O_RDONLY)) == -1) { perror("open"); exit(-1); } bzero((caddr_t)&ipfo, sizeof(ipfo)); ipfo.ipfo_rev = IPFILTER_VERSION; ipfo.ipfo_size = sizeof(fr_authstat_t); ipfo.ipfo_ptr = (void *)*frauthstpp; ipfo.ipfo_type = IPFOBJ_AUTHSTAT; if (ioctl(ipf_fd, SIOCATHST, &ipfo) == -1) { perror("ioctl(SIOCATHST)"); exit(-1); } } } /* * 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. */ static 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; int temp; void *rules[2][2]; struct nlist deadlist[43] = { { "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 */ { "ipstate_logging" }, { 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 *)&temp, (u_long)deadlist[15].n_value, sizeof(temp)); ipsstp->iss_active = temp; 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)); /* * Get logging on/off switches */ kmemcpy((char *)&state_logging, (u_long)deadlist[41].n_value, sizeof(state_logging)); } /* * 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; { PRINTF("bad packets:\t\tin %lu\tout %lu\n", fp->f_st[0].fr_bad, fp->f_st[1].fr_bad); #ifdef USE_INET6 PRINTF(" IPv6 packets:\t\tin %lu out %lu\n", fp->f_st[0].fr_ipv6, fp->f_st[1].fr_ipv6); #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\tnot fragmented %lu\n", fp->f_st[0].fr_nfr, fp->f_st[0].fr_bnfr, fp->f_st[0].fr_cfr); PRINTF("fragment state(out):\tkept %lu\tlost %lu\tnot fragmented %lu\n", fp->f_st[1].fr_nfr, fp->f_st[1].fr_bnfr, fp->f_st[0].fr_cfr); 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("IPF Ticks:\t%lu\n", fp->f_ticks); 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, comment) frentry_t *fp; char *comment; { struct frentry fb, *fg; char *data; u_32_t type; 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_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); data = NULL; type = fp->fr_type & ~FR_T_BUILTIN; if (type == FR_T_IPF || type == FR_T_BPFOPC) { if (fp->fr_dsize) { data = malloc(fp->fr_dsize); if (kmemcpy(data, (u_long)fp->fr_data, fp->fr_dsize) == -1) { perror("kmemcpy"); return; } fp->fr_data = data; } } printfr(fp, ioctl); if (opts & OPT_DEBUG) { binprint(fp, sizeof(*fp)); if (fp->fr_data != NULL && fp->fr_dsize > 0) binprint(fp->fr_data, fp->fr_dsize); } if (data != NULL) free(data); if (fp->fr_grp != NULL) { if (!kmemcpy((char *)&fg, (u_long)fp->fr_grp, sizeof(fg))) printlist(fg, comment); } if (type == FR_T_CALLFUNC) { printlist(fp->fr_data, "# callfunc: "); } 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) { #ifdef USE_INET6 if ((use_inet6) && (opts & OPT_OUTQUE)) { i = F_ACOUT; fp = (struct frentry *)fiop->f_acctout6[set]; } else if ((use_inet6) && (opts & OPT_INQUE)) { i = F_ACIN; fp = (struct frentry *)fiop->f_acctin6[set]; } else #endif if (opts & OPT_OUTQUE) { i = F_ACOUT; fp = (struct frentry *)fiop->f_acctout[set]; } else if (opts & OPT_INQUE) { i = F_ACIN; 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, NULL); } /* * Display ipfilter stateful filtering information */ static void showipstates(ipsp) ips_stat_t *ipsp; { u_long minlen, maxlen, totallen, *buckets; int i, sz; sz = sizeof(*buckets) * ipsp->iss_statesize; buckets = (u_long *)malloc(sz); if (kmemcpy((char *)buckets, (u_long)ipsp->iss_bucketlen, sz)) { free(buckets); return; } /* * 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 max bucket\n", ipsp->iss_max, ipsp->iss_nomem, ipsp->iss_bucketfull); 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); PRINTF("State logging %sabled\n", state_logging ? "en" : "dis"); PRINTF("\nState table bucket statistics:\n"); PRINTF("\t%lu in use\t\n", ipsp->iss_inuse); minlen = ipsp->iss_max; totallen = 0; maxlen = 0; for (i = 0; i < ipsp->iss_statesize; i++) { if (buckets[i] > maxlen) maxlen = buckets[i]; if (buckets[i] < minlen) minlen = buckets[i]; totallen += buckets[i]; } PRINTF("\t%2.2f%% bucket usage\n\t%lu minimal length\n", ((float)ipsp->iss_inuse / ipsp->iss_statesize) * 100.0, minlen); PRINTF("\t%lu maximal length\n\t%.3f average length\n", maxlen, ipsp->iss_inuse ? (float) totallen/ ipsp->iss_inuse : 0.0); #define ENTRIES_PER_LINE 5 if (opts & OPT_VERBOSE) { PRINTF("\nCurrent bucket sizes :\n"); for (i = 0; i < ipsp->iss_statesize; i++) { if ((i % ENTRIES_PER_LINE) == 0) PRINTF("\t"); PRINTF("%4d -> %4lu", i, buckets[i]); if ((i % ENTRIES_PER_LINE) == (ENTRIES_PER_LINE - 1)) PRINTF("\n"); else PRINTF(" "); } PRINTF("\n"); } PRINTF("\n"); free(buckets); 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, ipsp->iss_ticks); } free(buckets); } #ifdef STATETOP static int handle_resize = 0, handle_break = 0; static void topipstates(saddr, daddr, sport, dport, protocol, ver, refreshtime, topclosed) i6addr_t saddr; i6addr_t daddr; int sport; int dport; int protocol; int ver; int refreshtime; int topclosed; { char str1[STSTRSIZE], str2[STSTRSIZE], str3[STSTRSIZE], str4[STSTRSIZE]; int maxtsentries = 0, reverse = 0, sorting = STSORT_DEFAULT; int i, j, winy, tsentry, maxx, maxy, redraw = 0; int len, srclen, dstlen, forward = 1, c = 0, ret = 0; const char *errstr; ips_stat_t ipsst, *ipsstp = &ipsst; statetop_t *tstable = NULL, *tp; ipstate_t ips; ipfobj_t ipfo; struct timeval selecttimeout; char hostnm[HOSTNMLEN]; struct protoent *proto; fd_set readfd; time_t t; /* install signal handlers */ signal(SIGINT, sig_break); signal(SIGQUIT, sig_break); signal(SIGTERM, sig_break); signal(SIGWINCH, sig_resize); /* init ncurses stuff */ initscr(); cbreak(); noecho(); curs_set(0); timeout(0); getmaxyx(stdscr, maxy, maxx); /* init hostname */ gethostname(hostnm, sizeof(hostnm) - 1); hostnm[sizeof(hostnm) - 1] = '\0'; /* init ipfobj_t stuff */ bzero((caddr_t)&ipfo, sizeof(ipfo)); ipfo.ipfo_rev = IPFILTER_VERSION; ipfo.ipfo_size = sizeof(*ipsstp); ipfo.ipfo_ptr = (void *)ipsstp; ipfo.ipfo_type = IPFOBJ_STATESTAT; /* repeat until user aborts */ while ( 1 ) { /* get state table */ bzero((char *)&ipsst, sizeof(ipsst)); if ((ioctl(state_fd, SIOCGETFS, &ipfo) == -1)) { errstr = "ioctl(SIOCGETFS)"; ret = -1; goto out; } /* clear the history */ tsentry = -1; /* reset max str len */ srclen = dstlen = 0; /* read the state table and store in tstable */ for (; ipsstp->iss_list; ipsstp->iss_list = ips.is_next) { if (kmemcpy((char *)&ips, (u_long)ipsstp->iss_list, sizeof(ips))) break; if (ips.is_v != ver) continue; /* check v4 src/dest addresses */ if (ips.is_v == 4) { if ((saddr.in4.s_addr != INADDR_ANY && saddr.in4.s_addr != ips.is_saddr) || (daddr.in4.s_addr != INADDR_ANY && daddr.in4.s_addr != ips.is_daddr)) continue; } #ifdef USE_INET6 /* check v6 src/dest addresses */ if (ips.is_v == 6) { if ((IP6_NEQ(&saddr, &in6addr_any) && IP6_NEQ(&saddr, &ips.is_src)) || (IP6_NEQ(&daddr, &in6addr_any) && IP6_NEQ(&daddr, &ips.is_dst))) continue; } #endif /* check protocol */ if (protocol > 0 && protocol != ips.is_p) continue; /* check ports if protocol is TCP or UDP */ if (((ips.is_p == IPPROTO_TCP) || (ips.is_p == IPPROTO_UDP)) && (((sport > 0) && (htons(sport) != ips.is_sport)) || ((dport > 0) && (htons(dport) != ips.is_dport)))) continue; /* show closed TCP sessions ? */ if ((topclosed == 0) && (ips.is_p == IPPROTO_TCP) && (ips.is_state[0] >= IPF_TCPS_LAST_ACK) && (ips.is_state[1] >= IPF_TCPS_LAST_ACK)) continue; /* * if necessary make room for this state * entry */ tsentry++; if (!maxtsentries || tsentry == maxtsentries) { maxtsentries += STGROWSIZE; tstable = realloc(tstable, maxtsentries * sizeof(statetop_t)); if (tstable == NULL) { perror("realloc"); exit(-1); } } /* get max src/dest address string length */ len = strlen(getip(ips.is_v, &ips.is_src)); if (srclen < len) srclen = len; len = strlen(getip(ips.is_v, &ips.is_dst)); if (dstlen < len) dstlen = len; /* 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_v = ips.is_v; tp->st_state[0] = ips.is_state[0]; tp->st_state[1] = ips.is_state[1]; if (forward) { tp->st_pkts = ips.is_pkts[0]+ips.is_pkts[1]; tp->st_bytes = ips.is_bytes[0]+ips.is_bytes[1]; } else { tp->st_pkts = ips.is_pkts[2]+ips.is_pkts[3]; tp->st_bytes = ips.is_bytes[2]+ips.is_bytes[3]; } tp->st_age = ips.is_die - ipsstp->iss_ticks; 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; } } /* handle window resizes */ if (handle_resize) { endwin(); initscr(); cbreak(); noecho(); curs_set(0); timeout(0); getmaxyx(stdscr, maxy, maxx); redraw = 1; handle_resize = 0; } /* stop program? */ if (handle_break) break; /* print title */ erase(); attron(A_BOLD); winy = 0; move(winy,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(winy, 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", getip(ver, &saddr), sport); else sprintf(str1, "%s", getip(ver, &saddr)); if (dport >= 0) sprintf(str2, "%s,%d", getip(ver, &daddr), dport); else sprintf(str2, "%s", getip(ver, &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, "src ip"); break; case STSORT_DSTIP: sprintf(str4, "dest ip"); break; default: sprintf(str4, "unknown"); break; } if (reverse) strcat(str4, " (reverse)"); winy += 2; move(winy,0); printw("Src: %s, Dest: %s, Proto: %s, Sorted by: %s\n\n", str1, str2, str3, str4); /* need at least 14 + 7 characters */ if (srclen < 14) srclen = 14; if (dstlen < 14) dstlen = 14; /* print column description */ winy += 2; move(winy,0); attron(A_BOLD); printw("%-*s %-*s %3s %4s %7s %9s %9s\n", srclen + 7, "Source IP", dstlen + 7, "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", getip(tp->st_v, &tp->st_src), ntohs(tp->st_sport)); sprintf(str2, "%s,%hu", getip(tp->st_v, &tp->st_dst), ntohs(tp->st_dport)); } else { sprintf(str1, "%s", getip(tp->st_v, &tp->st_src)); sprintf(str2, "%s", getip(tp->st_v, &tp->st_dst)); } winy++; move(winy, 0); printw("%-*s %-*s", srclen + 7, str1, dstlen + 7, str2); /* print state */ sprintf(str1, "%X/%X", tp->st_state[0], tp->st_state[1]); printw(" %3s", str1); /* print protocol */ proto = getprotobynumber(tp->st_p); if (proto) { strncpy(str1, proto->p_name, 4); str1[4] = '\0'; } else { sprintf(str1, "%d", tp->st_p); } /* just print icmp for IPv6-ICMP */ if (tp->st_p == IPPROTO_ICMPV6) strcpy(str1, "icmp"); 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); if (refresh() == ERR) break; if (redraw) { clearok(stdscr,0); redraw = 0; } /* wait for key press or a 1 second time out period */ 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)) { 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; } else if (c == 'r') { reverse = !reverse; } else if (c == 'b') { forward = 0; } else if (c == 'f') { forward = 1; } else if (c == 's') { if (++sorting > STSORT_MAX) sorting = 0; } } } /* while */ out: printw("\n"); curs_set(1); nocbreak(); endwin(); free(tstable); if (ret != 0) { perror(errstr); exit(ret); } } #endif /* * Show fragment cache information that's held in the kernel. */ static void showfrstates(ifsp) ipfrstat_t *ifsp; { struct ipfr *ipfrtab[IPFT_SIZE], ifr; 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 retrans\n\t%lu too short\n", ifsp->ifs_retrans0, ifsp->ifs_short); 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. */ PRINTF("\n"); for (i = 0; i < IPFT_SIZE; i++) while (ipfrtab[i] != NULL) { if (kmemcpy((char *)&ifr, (u_long)ipfrtab[i], sizeof(ifr)) == -1) break; printfraginfo("", &ifr); ipfrtab[i] = ifr.ipfr_next; } /* * Print out the contents (if any) of the NAT fragment cache table. */ if (kmemcpy((char *)ipfrtab, (u_long)ifsp->ifs_nattab,sizeof(ipfrtab))) return; for (i = 0; i < IPFT_SIZE; i++) while (ipfrtab[i] != NULL) { if (kmemcpy((char *)&ifr, (u_long)ipfrtab[i], sizeof(ifr)) == -1) break; printfraginfo("NAT: ", &ifr); 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, ioctl); 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" }; static int gnums[3] = { IPL_LOGIPF, IPL_LOGCOUNT, IPL_LOGAUTH }; 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[gnums[i]][on]; fp != NULL; fp = grp.fg_next) if (kmemcpy((char *)&grp, (u_long)fp, sizeof(grp))) break; else printf("%s\n", grp.fg_name); printf("%s groups (inactive):\n", gnames[i]); for (fp = fiop->f_groups[gnums[i]][off]; fp != NULL; fp = grp.fg_next) if (kmemcpy((char *)&grp, (u_long)fp, sizeof(grp))) break; else printf("%s\n", grp.fg_name); } } static void parse_ipportstr(argument, ip, port) const char *argument; i6addr_t *ip; int *port; { char *s, *comma; int ok = 0; /* make working copy of argument, Theoretically you must be able * to write to optarg, but that seems very ugly to me.... */ s = strdup(argument); if (s == NULL) return; /* get port */ if ((comma = strchr(s, ',')) != NULL) { if (!strcasecmp(comma + 1, "any")) { *port = -1; } else if (!sscanf(comma + 1, "%d", port) || (*port < 0) || (*port > 65535)) { fprintf(stderr, "Invalid port specfication in %s\n", argument); free(s); exit(-2); } *comma = '\0'; } /* get ip address */ if (!strcasecmp(s, "any")) { ip->in4.s_addr = INADDR_ANY; #ifdef USE_INET6 ip->in6 = in6addr_any; } else if (use_inet6 && inet_pton(AF_INET6, s, &ip->in6)) { ok = 1; #endif } else if (inet_aton(s, &ip->in4)) ok = 1; if (ok == 0) { fprintf(stderr, "Invalid IP address: %s\n", s); free(s); exit(-2); } /* free allocated memory */ free(s); } #ifdef STATETOP static void sig_resize(s) int s; { handle_resize = 1; } static void sig_break(s) int s; { handle_break = 1; } static char *getip(v, addr) int v; i6addr_t *addr; { static char hostbuf[MAXHOSTNAMELEN+1]; if (v == 4) return inet_ntoa(addr->in4); #ifdef USE_INET6 (void) inet_ntop(AF_INET6, &addr->in6, hostbuf, sizeof(hostbuf) - 1); hostbuf[MAXHOSTNAMELEN] = '\0'; return hostbuf; #else return "IPv6"; #endif } static char *ttl_to_string(ttl) long int ttl; { static char ttlbuf[STSTRSIZE]; 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; #ifdef USE_INET6 if (use_inet6) { if (IP6_EQ(&ap->st_src, &bp->st_src)) return 0; else if (IP6_GT(&ap->st_src, &bp->st_src)) return 1; } else #endif { 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; #ifdef USE_INET6 if (use_inet6) { if (IP6_EQ(&ap->st_dst, &bp->st_dst)) return 0; else if (IP6_GT(&ap->st_dst, &bp->st_dst)) return 1; } else #endif { 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