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Sourcecode: freebsd-utils version File versions

pfctl.c

/*    $OpenBSD: pfctl.c,v 1.262 2007/03/01 17:20:53 deraadt Exp $ */

/*
 * Copyright (c) 2001 Daniel Hartmeier
 * Copyright (c) 2002,2003 Henning Brauer
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *    - Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *    - Redistributions in binary form must reproduce the above
 *      copyright notice, this list of conditions and the following
 *      disclaimer in the documentation and/or other materials provided
 *      with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/contrib/pf/pfctl/pfctl.c,v 1.7.6.1 2008/11/25 02:59:29 kensmith Exp $");

#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/stat.h>

#include <net/if.h>
#include <netinet/in.h>
#include <net/pfvar.h>
#include <arpa/inet.h>
#include <altq/altq.h>
#include <sys/sysctl.h>

#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "pfctl_parser.h"
#include "pfctl.h"

#ifdef __FreeBSD__
#define HTONL(x)  (x) = htonl((__uint32_t)(x))
#endif

void   usage(void);
int    pfctl_enable(int, int);
int    pfctl_disable(int, int);
int    pfctl_clear_stats(int, int);
int    pfctl_clear_interface_flags(int, int);
int    pfctl_clear_rules(int, int, char *);
int    pfctl_clear_nat(int, int, char *);
int    pfctl_clear_altq(int, int);
int    pfctl_clear_src_nodes(int, int);
int    pfctl_clear_states(int, const char *, int);
void   pfctl_addrprefix(char *, struct pf_addr *);
int    pfctl_kill_src_nodes(int, const char *, int);
int    pfctl_kill_states(int, const char *, int);
void   pfctl_init_options(struct pfctl *);
int    pfctl_load_options(struct pfctl *);
int    pfctl_load_limit(struct pfctl *, unsigned int, unsigned int);
int    pfctl_load_timeout(struct pfctl *, unsigned int, unsigned int);
int    pfctl_load_debug(struct pfctl *, unsigned int);
int    pfctl_load_logif(struct pfctl *, char *);
int    pfctl_load_hostid(struct pfctl *, unsigned int);
int    pfctl_get_pool(int, struct pf_pool *, u_int32_t, u_int32_t, int,
          char *);
void   pfctl_print_rule_counters(struct pf_rule *, int);
int    pfctl_show_rules(int, char *, int, enum pfctl_show, char *, int);
int    pfctl_show_nat(int, int, char *);
int    pfctl_show_src_nodes(int, int);
int    pfctl_show_states(int, const char *, int);
int    pfctl_show_status(int, int);
int    pfctl_show_timeouts(int, int);
int    pfctl_show_limits(int, int);
void   pfctl_debug(int, u_int32_t, int);
int    pfctl_test_altqsupport(int, int);
int    pfctl_show_anchors(int, int, char *);
int    pfctl_ruleset_trans(struct pfctl *, char *, struct pf_anchor *);
int    pfctl_load_ruleset(struct pfctl *, char *,
            struct pf_ruleset *, int, int);
int    pfctl_load_rule(struct pfctl *, char *, struct pf_rule *, int);
const char  *pfctl_lookup_option(char *, const char **);

struct pf_anchor_global  pf_anchors;
struct pf_anchor   pf_main_anchor;

const char  *clearopt;
char        *rulesopt;
const char  *showopt;
const char  *debugopt;
char        *anchoropt;
const char  *optiopt = NULL;
char        *pf_device = "/dev/pf";
char        *ifaceopt;
char        *tableopt;
const char  *tblcmdopt;
int          src_node_killers;
char        *src_node_kill[2];
int          state_killers;
char        *state_kill[2];
int          loadopt;
int          altqsupport;

int          dev = -1;
int          first_title = 1;
int          labels = 0;

const char  *infile;

#define INDENT(d, o)    do {                                \
                        if (o) {                      \
                              int i;                        \
                              for (i=0; i < d; i++)         \
                                    printf("  ");           \
                        }                             \
                  } while (0);                              \


static const struct {
      const char  *name;
      int         index;
} pf_limits[] = {
      { "states",       PF_LIMIT_STATES },
      { "src-nodes",          PF_LIMIT_SRC_NODES },
      { "frags",        PF_LIMIT_FRAGS },
      { "tables",       PF_LIMIT_TABLES },
      { "table-entries",      PF_LIMIT_TABLE_ENTRIES },
      { NULL,                 0 }
};

struct pf_hint {
      const char  *name;
      int         timeout;
};
static const struct pf_hint pf_hint_normal[] = {
      { "tcp.first",          2 * 60 },
      { "tcp.opening",  30 },
      { "tcp.established",    24 * 60 * 60 },
      { "tcp.closing",  15 * 60 },
      { "tcp.finwait",  45 },
      { "tcp.closed",         90 },
      { "tcp.tsdiff",         30 },
      { NULL,                 0 }
};
static const struct pf_hint pf_hint_satellite[] = {
      { "tcp.first",          3 * 60 },
      { "tcp.opening",  30 + 5 },
      { "tcp.established",    24 * 60 * 60 },
      { "tcp.closing",  15 * 60 + 5 },
      { "tcp.finwait",  45 + 5 },
      { "tcp.closed",         90 + 5 },
      { "tcp.tsdiff",         60 },
      { NULL,                 0 }
};
static const struct pf_hint pf_hint_conservative[] = {
      { "tcp.first",          60 * 60 },
      { "tcp.opening",  15 * 60 },
      { "tcp.established",    5 * 24 * 60 * 60 },
      { "tcp.closing",  60 * 60 },
      { "tcp.finwait",  10 * 60 },
      { "tcp.closed",         3 * 60 },
      { "tcp.tsdiff",         60 },
      { NULL,                 0 }
};
static const struct pf_hint pf_hint_aggressive[] = {
      { "tcp.first",          30 },
      { "tcp.opening",  5 },
      { "tcp.established",    5 * 60 * 60 },
      { "tcp.closing",  60 },
      { "tcp.finwait",  30 },
      { "tcp.closed",         30 },
      { "tcp.tsdiff",         10 },
      { NULL,                 0 }
};

static const struct {
      const char *name;
      const struct pf_hint *hint;
} pf_hints[] = {
      { "normal",       pf_hint_normal },
      { "satellite",          pf_hint_satellite },
      { "high-latency", pf_hint_satellite },
      { "conservative", pf_hint_conservative },
      { "aggressive",         pf_hint_aggressive },
      { NULL,                 NULL }
};

static const char *clearopt_list[] = {
      "nat", "queue", "rules", "Sources",
      "state", "info", "Tables", "osfp", "all", NULL
};

static const char *showopt_list[] = {
      "nat", "queue", "rules", "Anchors", "Sources", "state", "info",
      "Interfaces", "labels", "timeouts", "memory", "Tables", "osfp",
      "all", NULL
};

static const char *tblcmdopt_list[] = {
      "kill", "flush", "add", "delete", "load", "replace", "show",
      "test", "zero", "expire", NULL
};

static const char *debugopt_list[] = {
      "none", "urgent", "misc", "loud", NULL
};

static const char *optiopt_list[] = {
      "o", "none", "basic", "profile", NULL
};

void
usage(void)
{
      extern char *__progname;

      fprintf(stderr, "usage: %s [-AdeghmNnOqRrvz] ", __progname);
      fprintf(stderr, "[-a anchor] [-D macro=value] [-F modifier]\n");
      fprintf(stderr, "\t[-f file] [-i interface] [-K host | network] ");
      fprintf(stderr, "[-k host | network ]\n");
      fprintf(stderr, "\t[-o [level]] [-p device] [-s modifier ]\n");
      fprintf(stderr, "\t[-t table -T command [address ...]] [-x level]\n");
      exit(1);
}

int
pfctl_enable(int dev, int opts)
{
      if (ioctl(dev, DIOCSTART)) {
            if (errno == EEXIST)
                  errx(1, "pf already enabled");
#ifdef __FreeBSD__
            else if (errno == ESRCH)
                  errx(1, "pfil registeration failed");
#endif
            else
                  err(1, "DIOCSTART");
      }
      if ((opts & PF_OPT_QUIET) == 0)
            fprintf(stderr, "pf enabled\n");

      if (altqsupport && ioctl(dev, DIOCSTARTALTQ))
            if (errno != EEXIST)
                  err(1, "DIOCSTARTALTQ");

      return (0);
}

int
pfctl_disable(int dev, int opts)
{
      if (ioctl(dev, DIOCSTOP)) {
            if (errno == ENOENT)
                  errx(1, "pf not enabled");
            else
                  err(1, "DIOCSTOP");
      }
      if ((opts & PF_OPT_QUIET) == 0)
            fprintf(stderr, "pf disabled\n");

      if (altqsupport && ioctl(dev, DIOCSTOPALTQ))
                  if (errno != ENOENT)
                        err(1, "DIOCSTOPALTQ");

      return (0);
}

int
pfctl_clear_stats(int dev, int opts)
{
      if (ioctl(dev, DIOCCLRSTATUS))
            err(1, "DIOCCLRSTATUS");
      if ((opts & PF_OPT_QUIET) == 0)
            fprintf(stderr, "pf: statistics cleared\n");
      return (0);
}

int
pfctl_clear_interface_flags(int dev, int opts)
{
      struct pfioc_iface      pi;

      if ((opts & PF_OPT_NOACTION) == 0) {
            bzero(&pi, sizeof(pi));
            pi.pfiio_flags = PFI_IFLAG_SKIP;

            if (ioctl(dev, DIOCCLRIFFLAG, &pi))
                  err(1, "DIOCCLRIFFLAG");
            if ((opts & PF_OPT_QUIET) == 0)
                  fprintf(stderr, "pf: interface flags reset\n");
      }
      return (0);
}

int
pfctl_clear_rules(int dev, int opts, char *anchorname)
{
      struct pfr_buffer t;

      memset(&t, 0, sizeof(t));
      t.pfrb_type = PFRB_TRANS;
      if (pfctl_add_trans(&t, PF_RULESET_SCRUB, anchorname) ||
          pfctl_add_trans(&t, PF_RULESET_FILTER, anchorname) ||
          pfctl_trans(dev, &t, DIOCXBEGIN, 0) ||
          pfctl_trans(dev, &t, DIOCXCOMMIT, 0))
            err(1, "pfctl_clear_rules");
      if ((opts & PF_OPT_QUIET) == 0)
            fprintf(stderr, "rules cleared\n");
      return (0);
}

int
pfctl_clear_nat(int dev, int opts, char *anchorname)
{
      struct pfr_buffer t;

      memset(&t, 0, sizeof(t));
      t.pfrb_type = PFRB_TRANS;
      if (pfctl_add_trans(&t, PF_RULESET_NAT, anchorname) ||
          pfctl_add_trans(&t, PF_RULESET_BINAT, anchorname) ||
          pfctl_add_trans(&t, PF_RULESET_RDR, anchorname) ||
          pfctl_trans(dev, &t, DIOCXBEGIN, 0) ||
          pfctl_trans(dev, &t, DIOCXCOMMIT, 0))
            err(1, "pfctl_clear_nat");
      if ((opts & PF_OPT_QUIET) == 0)
            fprintf(stderr, "nat cleared\n");
      return (0);
}

int
pfctl_clear_altq(int dev, int opts)
{
      struct pfr_buffer t;

      if (!altqsupport)
            return (-1);
      memset(&t, 0, sizeof(t));
      t.pfrb_type = PFRB_TRANS;
      if (pfctl_add_trans(&t, PF_RULESET_ALTQ, "") ||
          pfctl_trans(dev, &t, DIOCXBEGIN, 0) ||
          pfctl_trans(dev, &t, DIOCXCOMMIT, 0))
            err(1, "pfctl_clear_altq");
      if ((opts & PF_OPT_QUIET) == 0)
            fprintf(stderr, "altq cleared\n");
      return (0);
}

int
pfctl_clear_src_nodes(int dev, int opts)
{
      if (ioctl(dev, DIOCCLRSRCNODES))
            err(1, "DIOCCLRSRCNODES");
      if ((opts & PF_OPT_QUIET) == 0)
            fprintf(stderr, "source tracking entries cleared\n");
      return (0);
}

int
pfctl_clear_states(int dev, const char *iface, int opts)
{
      struct pfioc_state_kill psk;

      memset(&psk, 0, sizeof(psk));
      if (iface != NULL && strlcpy(psk.psk_ifname, iface,
          sizeof(psk.psk_ifname)) >= sizeof(psk.psk_ifname))
            errx(1, "invalid interface: %s", iface);

      if (ioctl(dev, DIOCCLRSTATES, &psk))
            err(1, "DIOCCLRSTATES");
      if ((opts & PF_OPT_QUIET) == 0)
            fprintf(stderr, "%d states cleared\n", psk.psk_af);
      return (0);
}

void
pfctl_addrprefix(char *addr, struct pf_addr *mask)
{
      char *p;
      const char *errstr;
      int prefix, ret_ga, q, r;
      struct addrinfo hints, *res;

      if ((p = strchr(addr, '/')) == NULL)
            return;

      *p++ = '\0';
      prefix = strtonum(p, 0, 128, &errstr);
      if (errstr)
            errx(1, "prefix is %s: %s", errstr, p);

      bzero(&hints, sizeof(hints));
      /* prefix only with numeric addresses */
      hints.ai_flags |= AI_NUMERICHOST;

      if ((ret_ga = getaddrinfo(addr, NULL, &hints, &res))) {
            errx(1, "getaddrinfo: %s", gai_strerror(ret_ga));
            /* NOTREACHED */
      }

      if (res->ai_family == AF_INET && prefix > 32)
            errx(1, "prefix too long for AF_INET");
      else if (res->ai_family == AF_INET6 && prefix > 128)
            errx(1, "prefix too long for AF_INET6");

      q = prefix >> 3;
      r = prefix & 7;
      switch (res->ai_family) {
      case AF_INET:
            bzero(&mask->v4, sizeof(mask->v4));
            mask->v4.s_addr = htonl((u_int32_t)
                (0xffffffffffULL << (32 - prefix)));
            break;
      case AF_INET6:
            bzero(&mask->v6, sizeof(mask->v6));
            if (q > 0)
                  memset((void *)&mask->v6, 0xff, q);
            if (r > 0)
                  *((u_char *)&mask->v6 + q) =
                      (0xff00 >> r) & 0xff;
            break;
      }
      freeaddrinfo(res);
}

int
pfctl_kill_src_nodes(int dev, const char *iface, int opts)
{
      struct pfioc_src_node_kill psnk;
      struct addrinfo *res[2], *resp[2];
      struct sockaddr last_src, last_dst;
      int killed, sources, dests;
      int ret_ga;

      killed = sources = dests = 0;

      memset(&psnk, 0, sizeof(psnk));
      memset(&psnk.psnk_src.addr.v.a.mask, 0xff,
          sizeof(psnk.psnk_src.addr.v.a.mask));
      memset(&last_src, 0xff, sizeof(last_src));
      memset(&last_dst, 0xff, sizeof(last_dst));

      pfctl_addrprefix(src_node_kill[0], &psnk.psnk_src.addr.v.a.mask);

      if ((ret_ga = getaddrinfo(src_node_kill[0], NULL, NULL, &res[0]))) {
            errx(1, "getaddrinfo: %s", gai_strerror(ret_ga));
            /* NOTREACHED */
      }
      for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) {
            if (resp[0]->ai_addr == NULL)
                  continue;
            /* We get lots of duplicates.  Catch the easy ones */
            if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0)
                  continue;
            last_src = *(struct sockaddr *)resp[0]->ai_addr;

            psnk.psnk_af = resp[0]->ai_family;
            sources++;

            if (psnk.psnk_af == AF_INET)
                  psnk.psnk_src.addr.v.a.addr.v4 =
                      ((struct sockaddr_in *)resp[0]->ai_addr)->sin_addr;
            else if (psnk.psnk_af == AF_INET6)
                  psnk.psnk_src.addr.v.a.addr.v6 =
                      ((struct sockaddr_in6 *)resp[0]->ai_addr)->
                      sin6_addr;
            else
                  errx(1, "Unknown address family %d", psnk.psnk_af);

            if (src_node_killers > 1) {
                  dests = 0;
                  memset(&psnk.psnk_dst.addr.v.a.mask, 0xff,
                      sizeof(psnk.psnk_dst.addr.v.a.mask));
                  memset(&last_dst, 0xff, sizeof(last_dst));
                  pfctl_addrprefix(src_node_kill[1],
                      &psnk.psnk_dst.addr.v.a.mask);
                  if ((ret_ga = getaddrinfo(src_node_kill[1], NULL, NULL,
                      &res[1]))) {
                        errx(1, "getaddrinfo: %s",
                            gai_strerror(ret_ga));
                        /* NOTREACHED */
                  }
                  for (resp[1] = res[1]; resp[1];
                      resp[1] = resp[1]->ai_next) {
                        if (resp[1]->ai_addr == NULL)
                              continue;
                        if (psnk.psnk_af != resp[1]->ai_family)
                              continue;

                        if (memcmp(&last_dst, resp[1]->ai_addr,
                            sizeof(last_dst)) == 0)
                              continue;
                        last_dst = *(struct sockaddr *)resp[1]->ai_addr;

                        dests++;

                        if (psnk.psnk_af == AF_INET)
                              psnk.psnk_dst.addr.v.a.addr.v4 =
                                  ((struct sockaddr_in *)resp[1]->
                                  ai_addr)->sin_addr;
                        else if (psnk.psnk_af == AF_INET6)
                              psnk.psnk_dst.addr.v.a.addr.v6 =
                                  ((struct sockaddr_in6 *)resp[1]->
                                  ai_addr)->sin6_addr;
                        else
                              errx(1, "Unknown address family %d",
                                  psnk.psnk_af);

                        if (ioctl(dev, DIOCKILLSRCNODES, &psnk))
                              err(1, "DIOCKILLSRCNODES");
                        killed += psnk.psnk_af;
                        /* fixup psnk.psnk_af */
                        psnk.psnk_af = resp[1]->ai_family;
                  }
                  freeaddrinfo(res[1]);
            } else {
                  if (ioctl(dev, DIOCKILLSRCNODES, &psnk))
                        err(1, "DIOCKILLSRCNODES");
                  killed += psnk.psnk_af;
                  /* fixup psnk.psnk_af */
                  psnk.psnk_af = res[0]->ai_family;
            }
      }

      freeaddrinfo(res[0]);

      if ((opts & PF_OPT_QUIET) == 0)
            fprintf(stderr, "killed %d src nodes from %d sources and %d "
                "destinations\n", killed, sources, dests);
      return (0);
}

int
pfctl_kill_states(int dev, const char *iface, int opts)
{
      struct pfioc_state_kill psk;
      struct addrinfo *res[2], *resp[2];
      struct sockaddr last_src, last_dst;
      int killed, sources, dests;
      int ret_ga;

      killed = sources = dests = 0;

      memset(&psk, 0, sizeof(psk));
      memset(&psk.psk_src.addr.v.a.mask, 0xff,
          sizeof(psk.psk_src.addr.v.a.mask));
      memset(&last_src, 0xff, sizeof(last_src));
      memset(&last_dst, 0xff, sizeof(last_dst));
      if (iface != NULL && strlcpy(psk.psk_ifname, iface,
          sizeof(psk.psk_ifname)) >= sizeof(psk.psk_ifname))
            errx(1, "invalid interface: %s", iface);

      pfctl_addrprefix(state_kill[0], &psk.psk_src.addr.v.a.mask);

      if ((ret_ga = getaddrinfo(state_kill[0], NULL, NULL, &res[0]))) {
            errx(1, "getaddrinfo: %s", gai_strerror(ret_ga));
            /* NOTREACHED */
      }
      for (resp[0] = res[0]; resp[0]; resp[0] = resp[0]->ai_next) {
            if (resp[0]->ai_addr == NULL)
                  continue;
            /* We get lots of duplicates.  Catch the easy ones */
            if (memcmp(&last_src, resp[0]->ai_addr, sizeof(last_src)) == 0)
                  continue;
            last_src = *(struct sockaddr *)resp[0]->ai_addr;

            psk.psk_af = resp[0]->ai_family;
            sources++;

            if (psk.psk_af == AF_INET)
                  psk.psk_src.addr.v.a.addr.v4 =
                      ((struct sockaddr_in *)resp[0]->ai_addr)->sin_addr;
            else if (psk.psk_af == AF_INET6)
                  psk.psk_src.addr.v.a.addr.v6 =
                      ((struct sockaddr_in6 *)resp[0]->ai_addr)->
                      sin6_addr;
            else
                  errx(1, "Unknown address family %d", psk.psk_af);

            if (state_killers > 1) {
                  dests = 0;
                  memset(&psk.psk_dst.addr.v.a.mask, 0xff,
                      sizeof(psk.psk_dst.addr.v.a.mask));
                  memset(&last_dst, 0xff, sizeof(last_dst));
                  pfctl_addrprefix(state_kill[1],
                      &psk.psk_dst.addr.v.a.mask);
                  if ((ret_ga = getaddrinfo(state_kill[1], NULL, NULL,
                      &res[1]))) {
                        errx(1, "getaddrinfo: %s",
                            gai_strerror(ret_ga));
                        /* NOTREACHED */
                  }
                  for (resp[1] = res[1]; resp[1];
                      resp[1] = resp[1]->ai_next) {
                        if (resp[1]->ai_addr == NULL)
                              continue;
                        if (psk.psk_af != resp[1]->ai_family)
                              continue;

                        if (memcmp(&last_dst, resp[1]->ai_addr,
                            sizeof(last_dst)) == 0)
                              continue;
                        last_dst = *(struct sockaddr *)resp[1]->ai_addr;

                        dests++;

                        if (psk.psk_af == AF_INET)
                              psk.psk_dst.addr.v.a.addr.v4 =
                                  ((struct sockaddr_in *)resp[1]->
                                  ai_addr)->sin_addr;
                        else if (psk.psk_af == AF_INET6)
                              psk.psk_dst.addr.v.a.addr.v6 =
                                  ((struct sockaddr_in6 *)resp[1]->
                                  ai_addr)->sin6_addr;
                        else
                              errx(1, "Unknown address family %d",
                                  psk.psk_af);

                        if (ioctl(dev, DIOCKILLSTATES, &psk))
                              err(1, "DIOCKILLSTATES");
                        killed += psk.psk_af;
                        /* fixup psk.psk_af */
                        psk.psk_af = resp[1]->ai_family;
                  }
                  freeaddrinfo(res[1]);
            } else {
                  if (ioctl(dev, DIOCKILLSTATES, &psk))
                        err(1, "DIOCKILLSTATES");
                  killed += psk.psk_af;
                  /* fixup psk.psk_af */
                  psk.psk_af = res[0]->ai_family;
            }
      }

      freeaddrinfo(res[0]);

      if ((opts & PF_OPT_QUIET) == 0)
            fprintf(stderr, "killed %d states from %d sources and %d "
                "destinations\n", killed, sources, dests);
      return (0);
}

int
pfctl_get_pool(int dev, struct pf_pool *pool, u_int32_t nr,
    u_int32_t ticket, int r_action, char *anchorname)
{
      struct pfioc_pooladdr pp;
      struct pf_pooladdr *pa;
      u_int32_t pnr, mpnr;

      memset(&pp, 0, sizeof(pp));
      memcpy(pp.anchor, anchorname, sizeof(pp.anchor));
      pp.r_action = r_action;
      pp.r_num = nr;
      pp.ticket = ticket;
      if (ioctl(dev, DIOCGETADDRS, &pp)) {
            warn("DIOCGETADDRS");
            return (-1);
      }
      mpnr = pp.nr;
      TAILQ_INIT(&pool->list);
      for (pnr = 0; pnr < mpnr; ++pnr) {
            pp.nr = pnr;
            if (ioctl(dev, DIOCGETADDR, &pp)) {
                  warn("DIOCGETADDR");
                  return (-1);
            }
            pa = calloc(1, sizeof(struct pf_pooladdr));
            if (pa == NULL)
                  err(1, "calloc");
            bcopy(&pp.addr, pa, sizeof(struct pf_pooladdr));
            TAILQ_INSERT_TAIL(&pool->list, pa, entries);
      }

      return (0);
}

void
pfctl_move_pool(struct pf_pool *src, struct pf_pool *dst)
{
      struct pf_pooladdr *pa;

      while ((pa = TAILQ_FIRST(&src->list)) != NULL) {
            TAILQ_REMOVE(&src->list, pa, entries);
            TAILQ_INSERT_TAIL(&dst->list, pa, entries);
      }
}

void
pfctl_clear_pool(struct pf_pool *pool)
{
      struct pf_pooladdr *pa;

      while ((pa = TAILQ_FIRST(&pool->list)) != NULL) {
            TAILQ_REMOVE(&pool->list, pa, entries);
            free(pa);
      }
}

void
pfctl_print_rule_counters(struct pf_rule *rule, int opts)
{
      if (opts & PF_OPT_DEBUG) {
            const char *t[PF_SKIP_COUNT] = { "i", "d", "f",
                "p", "sa", "sp", "da", "dp" };
            int i;

            printf("  [ Skip steps: ");
            for (i = 0; i < PF_SKIP_COUNT; ++i) {
                  if (rule->skip[i].nr == rule->nr + 1)
                        continue;
                  printf("%s=", t[i]);
                  if (rule->skip[i].nr == -1)
                        printf("end ");
                  else
                        printf("%u ", rule->skip[i].nr);
            }
            printf("]\n");

            printf("  [ queue: qname=%s qid=%u pqname=%s pqid=%u ]\n",
                rule->qname, rule->qid, rule->pqname, rule->pqid);
      }
      if (opts & PF_OPT_VERBOSE) {
            printf("  [ Evaluations: %-8llu  Packets: %-8llu  "
                      "Bytes: %-10llu  States: %-6u]\n",
                      (unsigned long long)rule->evaluations,
                      (unsigned long long)(rule->packets[0] +
                      rule->packets[1]),
                      (unsigned long long)(rule->bytes[0] +
                      rule->bytes[1]), rule->states);
            if (!(opts & PF_OPT_DEBUG))
                  printf("  [ Inserted: uid %u pid %u ]\n",
                      (unsigned)rule->cuid, (unsigned)rule->cpid);
      }
}

void
pfctl_print_title(char *title)
{
      if (!first_title)
            printf("\n");
      first_title = 0;
      printf("%s\n", title);
}

int
pfctl_show_rules(int dev, char *path, int opts, enum pfctl_show format,
    char *anchorname, int depth)
{
      struct pfioc_rule pr;
      u_int32_t nr, mnr, header = 0;
      int rule_numbers = opts & (PF_OPT_VERBOSE2 | PF_OPT_DEBUG);
      int len = strlen(path);
      int brace;
      char *p;

      if (path[0])
            snprintf(&path[len], MAXPATHLEN - len, "/%s", anchorname);
      else
            snprintf(&path[len], MAXPATHLEN - len, "%s", anchorname);

      memset(&pr, 0, sizeof(pr));
      memcpy(pr.anchor, path, sizeof(pr.anchor));
      if (opts & PF_OPT_SHOWALL) {
            pr.rule.action = PF_PASS;
            if (ioctl(dev, DIOCGETRULES, &pr)) {
                  warn("DIOCGETRULES");
                  goto error;
            }
            header++;
      }
      pr.rule.action = PF_SCRUB;
      if (ioctl(dev, DIOCGETRULES, &pr)) {
            warn("DIOCGETRULES");
            goto error;
      }
      if (opts & PF_OPT_SHOWALL) {
            if (format == PFCTL_SHOW_RULES && (pr.nr > 0 || header))
                  pfctl_print_title("FILTER RULES:");
            else if (format == PFCTL_SHOW_LABELS && labels)
                  pfctl_print_title("LABEL COUNTERS:");
      }
      mnr = pr.nr;
      if (opts & PF_OPT_CLRRULECTRS)
            pr.action = PF_GET_CLR_CNTR;

      for (nr = 0; nr < mnr; ++nr) {
            pr.nr = nr;
            if (ioctl(dev, DIOCGETRULE, &pr)) {
                  warn("DIOCGETRULE");
                  goto error;
            }

            if (pfctl_get_pool(dev, &pr.rule.rpool,
                nr, pr.ticket, PF_SCRUB, path) != 0)
                  goto error;

            switch (format) {
            case PFCTL_SHOW_LABELS:
                  if (pr.rule.label[0]) {
                        printf("%s ", pr.rule.label);
                        printf("%llu %llu %llu %llu %llu %llu %llu\n",
                            (unsigned long long)pr.rule.evaluations,
                            (unsigned long long)(pr.rule.packets[0] +
                            pr.rule.packets[1]),
                            (unsigned long long)(pr.rule.bytes[0] +
                            pr.rule.bytes[1]),
                            (unsigned long long)pr.rule.packets[0],
                            (unsigned long long)pr.rule.bytes[0],
                            (unsigned long long)pr.rule.packets[1],
                            (unsigned long long)pr.rule.bytes[1]);
                  }
                  break;
            case PFCTL_SHOW_RULES:
                  if (pr.rule.label[0] && (opts & PF_OPT_SHOWALL))
                        labels = 1;
                  print_rule(&pr.rule, pr.anchor_call, rule_numbers);
                  printf("\n");
                  pfctl_print_rule_counters(&pr.rule, opts);
                  break;
            case PFCTL_SHOW_NOTHING:
                  break;
            }
            pfctl_clear_pool(&pr.rule.rpool);
      }
      pr.rule.action = PF_PASS;
      if (ioctl(dev, DIOCGETRULES, &pr)) {
            warn("DIOCGETRULES");
            goto error;
      }
      mnr = pr.nr;
      for (nr = 0; nr < mnr; ++nr) {
            pr.nr = nr;
            if (ioctl(dev, DIOCGETRULE, &pr)) {
                  warn("DIOCGETRULE");
                  goto error;
            }

            if (pfctl_get_pool(dev, &pr.rule.rpool,
                nr, pr.ticket, PF_PASS, path) != 0)
                  goto error;

            switch (format) {
            case PFCTL_SHOW_LABELS:
                  if (pr.rule.label[0]) {
                        printf("%s ", pr.rule.label);
                        printf("%llu %llu %llu %llu %llu %llu %llu\n",
                            (unsigned long long)pr.rule.evaluations,
                            (unsigned long long)(pr.rule.packets[0] +
                            pr.rule.packets[1]),
                            (unsigned long long)(pr.rule.bytes[0] +
                            pr.rule.bytes[1]),
                            (unsigned long long)pr.rule.packets[0],
                            (unsigned long long)pr.rule.bytes[0],
                            (unsigned long long)pr.rule.packets[1],
                            (unsigned long long)pr.rule.bytes[1]);
                  }
                  break;
            case PFCTL_SHOW_RULES:
                  brace = 0;
                  if (pr.rule.label[0] && (opts & PF_OPT_SHOWALL))
                        labels = 1;
                  INDENT(depth, !(opts & PF_OPT_VERBOSE));
                  if (pr.anchor_call[0] &&
                     ((((p = strrchr(pr.anchor_call, '_')) != NULL) &&
                     ((void *)p == (void *)pr.anchor_call ||
                     *(--p) == '/')) || (opts & PF_OPT_RECURSE))) {
                        brace++;
                        if ((p = strrchr(pr.anchor_call, '/')) !=
                            NULL)
                              p++;
                        else
                              p = &pr.anchor_call[0];
                  } else
                        p = &pr.anchor_call[0];
            
                  print_rule(&pr.rule, p, rule_numbers);
                  if (brace)
                        printf(" {\n");
                  else
                        printf("\n");
                  pfctl_print_rule_counters(&pr.rule, opts);
                  if (brace) { 
                        pfctl_show_rules(dev, path, opts, format,
                            p, depth + 1);
                        INDENT(depth, !(opts & PF_OPT_VERBOSE));
                        printf("}\n");
                  }
                  break;
            case PFCTL_SHOW_NOTHING:
                  break;
            }
            pfctl_clear_pool(&pr.rule.rpool);
      }
      path[len] = '\0';
      return (0);

 error:
      path[len] = '\0';
      return (-1);
}

int
pfctl_show_nat(int dev, int opts, char *anchorname)
{
      struct pfioc_rule pr;
      u_int32_t mnr, nr;
      static int nattype[3] = { PF_NAT, PF_RDR, PF_BINAT };
      int i, dotitle = opts & PF_OPT_SHOWALL;

      memset(&pr, 0, sizeof(pr));
      memcpy(pr.anchor, anchorname, sizeof(pr.anchor));
      for (i = 0; i < 3; i++) {
            pr.rule.action = nattype[i];
            if (ioctl(dev, DIOCGETRULES, &pr)) {
                  warn("DIOCGETRULES");
                  return (-1);
            }
            mnr = pr.nr;
            for (nr = 0; nr < mnr; ++nr) {
                  pr.nr = nr;
                  if (ioctl(dev, DIOCGETRULE, &pr)) {
                        warn("DIOCGETRULE");
                        return (-1);
                  }
                  if (pfctl_get_pool(dev, &pr.rule.rpool, nr,
                      pr.ticket, nattype[i], anchorname) != 0)
                        return (-1);
                  if (dotitle) {
                        pfctl_print_title("TRANSLATION RULES:");
                        dotitle = 0;
                  }
                  print_rule(&pr.rule, pr.anchor_call,
                      opts & PF_OPT_VERBOSE2);
                  printf("\n");
                  pfctl_print_rule_counters(&pr.rule, opts);
                  pfctl_clear_pool(&pr.rule.rpool);
            }
      }
      return (0);
}

int
pfctl_show_src_nodes(int dev, int opts)
{
      struct pfioc_src_nodes psn;
      struct pf_src_node *p;
      char *inbuf = NULL, *newinbuf = NULL;
      unsigned len = 0;
      int i;

      memset(&psn, 0, sizeof(psn));
      for (;;) {
            psn.psn_len = len;
            if (len) {
                  newinbuf = realloc(inbuf, len);
                  if (newinbuf == NULL)
                        err(1, "realloc");
                  psn.psn_buf = inbuf = newinbuf;
            }
            if (ioctl(dev, DIOCGETSRCNODES, &psn) < 0) {
                  warn("DIOCGETSRCNODES");
                  free(inbuf);
                  return (-1);
            }
            if (psn.psn_len + sizeof(struct pfioc_src_nodes) < len)
                  break;
            if (len == 0 && psn.psn_len == 0)
                  goto done;
            if (len == 0 && psn.psn_len != 0)
                  len = psn.psn_len;
            if (psn.psn_len == 0)
                  goto done;  /* no src_nodes */
            len *= 2;
      }
      p = psn.psn_src_nodes;
      if (psn.psn_len > 0 && (opts & PF_OPT_SHOWALL))
            pfctl_print_title("SOURCE TRACKING NODES:");
      for (i = 0; i < psn.psn_len; i += sizeof(*p)) {
            print_src_node(p, opts);
            p++;
      }
done:
      free(inbuf);
      return (0);
}

int
pfctl_show_states(int dev, const char *iface, int opts)
{
      struct pfioc_states ps;
      struct pf_state *p;
      char *inbuf = NULL, *newinbuf = NULL;
      unsigned len = 0;
      int i, dotitle = (opts & PF_OPT_SHOWALL);

      memset(&ps, 0, sizeof(ps));
      for (;;) {
            ps.ps_len = len;
            if (len) {
                  newinbuf = realloc(inbuf, len);
                  if (newinbuf == NULL)
                        err(1, "realloc");
                  ps.ps_buf = inbuf = newinbuf;
            }
            if (ioctl(dev, DIOCGETSTATES, &ps) < 0) {
                  warn("DIOCGETSTATES");
                  free(inbuf);
                  return (-1);
            }
            if (ps.ps_len + sizeof(struct pfioc_states) < len)
                  break;
            if (len == 0 && ps.ps_len == 0)
                  goto done;
            if (len == 0 && ps.ps_len != 0)
                  len = ps.ps_len;
            if (ps.ps_len == 0)
                  goto done;  /* no states */
            len *= 2;
      }
      p = ps.ps_states;
      for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) {
            if (iface != NULL && strcmp(p->u.ifname, iface))
                  continue;
            if (dotitle) {
                  pfctl_print_title("STATES:");
                  dotitle = 0;
            }
            print_state(p, opts);
      }
done:
      free(inbuf);
      return (0);
}

int
pfctl_show_status(int dev, int opts)
{
      struct pf_status status;

      if (ioctl(dev, DIOCGETSTATUS, &status)) {
            warn("DIOCGETSTATUS");
            return (-1);
      }
      if (opts & PF_OPT_SHOWALL)
            pfctl_print_title("INFO:");
      print_status(&status, opts);
      return (0);
}

int
pfctl_show_timeouts(int dev, int opts)
{
      struct pfioc_tm pt;
      int i;

      if (opts & PF_OPT_SHOWALL)
            pfctl_print_title("TIMEOUTS:");
      memset(&pt, 0, sizeof(pt));
      for (i = 0; pf_timeouts[i].name; i++) {
            pt.timeout = pf_timeouts[i].timeout;
            if (ioctl(dev, DIOCGETTIMEOUT, &pt))
                  err(1, "DIOCGETTIMEOUT");
            printf("%-20s %10d", pf_timeouts[i].name, pt.seconds);
            if (pf_timeouts[i].timeout >= PFTM_ADAPTIVE_START &&
                pf_timeouts[i].timeout <= PFTM_ADAPTIVE_END)
                  printf(" states");
            else
                  printf("s");
            printf("\n");
      }
      return (0);

}

int
pfctl_show_limits(int dev, int opts)
{
      struct pfioc_limit pl;
      int i;

      if (opts & PF_OPT_SHOWALL)
            pfctl_print_title("LIMITS:");
      memset(&pl, 0, sizeof(pl));
      for (i = 0; pf_limits[i].name; i++) {
            pl.index = pf_limits[i].index;
            if (ioctl(dev, DIOCGETLIMIT, &pl))
                  err(1, "DIOCGETLIMIT");
            printf("%-13s ", pf_limits[i].name);
            if (pl.limit == UINT_MAX)
                  printf("unlimited\n");
            else
                  printf("hard limit %8u\n", pl.limit);
      }
      return (0);
}

/* callbacks for rule/nat/rdr/addr */
int
pfctl_add_pool(struct pfctl *pf, struct pf_pool *p, sa_family_t af)
{
      struct pf_pooladdr *pa;

      if ((pf->opts & PF_OPT_NOACTION) == 0) {
            if (ioctl(pf->dev, DIOCBEGINADDRS, &pf->paddr))
                  err(1, "DIOCBEGINADDRS");
      }

      pf->paddr.af = af;
      TAILQ_FOREACH(pa, &p->list, entries) {
            memcpy(&pf->paddr.addr, pa, sizeof(struct pf_pooladdr));
            if ((pf->opts & PF_OPT_NOACTION) == 0) {
                  if (ioctl(pf->dev, DIOCADDADDR, &pf->paddr))
                        err(1, "DIOCADDADDR");
            }
      }
      return (0);
}

int
pfctl_add_rule(struct pfctl *pf, struct pf_rule *r, const char *anchor_call)
{
      u_int8_t          rs_num;
      struct pf_rule          *rule;
      struct pf_ruleset *rs;
      char              *p;

      rs_num = pf_get_ruleset_number(r->action);
      if (rs_num == PF_RULESET_MAX)
            errx(1, "Invalid rule type %d", r->action);

      rs = &pf->anchor->ruleset;

      if (anchor_call[0] && r->anchor == NULL) {
            /* 
             * Don't make non-brace anchors part of the main anchor pool.
             */
            if ((r->anchor = calloc(1, sizeof(*r->anchor))) == NULL)
                  err(1, "pfctl_add_rule: calloc");
            
            pf_init_ruleset(&r->anchor->ruleset);
            r->anchor->ruleset.anchor = r->anchor;
            if (strlcpy(r->anchor->path, anchor_call,
                sizeof(rule->anchor->path)) >= sizeof(rule->anchor->path))
                        errx(1, "pfctl_add_rule: strlcpy");
            if ((p = strrchr(anchor_call, '/')) != NULL) {
                  if (!strlen(p))
                        err(1, "pfctl_add_rule: bad anchor name %s",
                            anchor_call);
            } else
                  p = (char *)anchor_call;
            if (strlcpy(r->anchor->name, p,
                sizeof(rule->anchor->name)) >= sizeof(rule->anchor->name))
                        errx(1, "pfctl_add_rule: strlcpy");
      }

      if ((rule = calloc(1, sizeof(*rule))) == NULL)
            err(1, "calloc");
      bcopy(r, rule, sizeof(*rule));
      TAILQ_INIT(&rule->rpool.list);
      pfctl_move_pool(&r->rpool, &rule->rpool);

      TAILQ_INSERT_TAIL(rs->rules[rs_num].active.ptr, rule, entries);
      return (0);
}

int
pfctl_ruleset_trans(struct pfctl *pf, char *path, struct pf_anchor *a)
{
      int osize = pf->trans->pfrb_size;

      if ((pf->loadopt & PFCTL_FLAG_NAT) != 0) {
            if (pfctl_add_trans(pf->trans, PF_RULESET_NAT, path) ||
                pfctl_add_trans(pf->trans, PF_RULESET_BINAT, path) ||
                pfctl_add_trans(pf->trans, PF_RULESET_RDR, path))
                  return (1);
      }
      if (a == pf->astack[0] && ((altqsupport &&
           (pf->loadopt & PFCTL_FLAG_ALTQ) != 0))) {
            if (pfctl_add_trans(pf->trans, PF_RULESET_ALTQ, path))
                  return (2);
      }
      if ((pf->loadopt & PFCTL_FLAG_FILTER) != 0) {
            if (pfctl_add_trans(pf->trans, PF_RULESET_SCRUB, path) ||
                pfctl_add_trans(pf->trans, PF_RULESET_FILTER, path))
                  return (3);
      }
      if (pf->loadopt & PFCTL_FLAG_TABLE)
            if (pfctl_add_trans(pf->trans, PF_RULESET_TABLE, path))
                  return (4);
      if (pfctl_trans(pf->dev, pf->trans, DIOCXBEGIN, osize))
            return (5);

      return (0);
}

int
pfctl_load_ruleset(struct pfctl *pf, char *path, struct pf_ruleset *rs,
    int rs_num, int depth)
{
      struct pf_rule *r;
      int         error, len = strlen(path);
      int         brace = 0;

      pf->anchor = rs->anchor;

      if (path[0])
            snprintf(&path[len], MAXPATHLEN - len, "/%s", pf->anchor->name);
      else
            snprintf(&path[len], MAXPATHLEN - len, "%s", pf->anchor->name);

      if (depth) {
            if (TAILQ_FIRST(rs->rules[rs_num].active.ptr) != NULL) {
                  brace++;
                  if (pf->opts & PF_OPT_VERBOSE)
                        printf(" {\n");
                  if ((pf->opts & PF_OPT_NOACTION) == 0 &&
                      (error = pfctl_ruleset_trans(pf,
                      path, rs->anchor))) {
                        printf("pfctl_load_rulesets: "
                            "pfctl_ruleset_trans %d\n", error);
                        goto error;
                  }
            } else if (pf->opts & PF_OPT_VERBOSE)
                  printf("\n");

      }

      if (pf->optimize && rs_num == PF_RULESET_FILTER)
            pfctl_optimize_ruleset(pf, rs);

      while ((r = TAILQ_FIRST(rs->rules[rs_num].active.ptr)) != NULL) {
            TAILQ_REMOVE(rs->rules[rs_num].active.ptr, r, entries);
            if ((error = pfctl_load_rule(pf, path, r, depth)))
                  goto error;
            if (r->anchor) {
                  if ((error = pfctl_load_ruleset(pf, path,
                      &r->anchor->ruleset, rs_num, depth + 1)))
                        goto error;
            } else if (pf->opts & PF_OPT_VERBOSE)
                  printf("\n");
            free(r);
      }
      if (brace && pf->opts & PF_OPT_VERBOSE) {
            INDENT(depth - 1, (pf->opts & PF_OPT_VERBOSE));
            printf("}\n");
      }
      path[len] = '\0';
      return (0);

 error:
      path[len] = '\0';
      return (error);

}

int
pfctl_load_rule(struct pfctl *pf, char *path, struct pf_rule *r, int depth)
{
      u_int8_t          rs_num = pf_get_ruleset_number(r->action);
      char              *name;
      struct pfioc_rule pr;
      int               len = strlen(path);

      bzero(&pr, sizeof(pr));
      /* set up anchor before adding to path for anchor_call */
      if ((pf->opts & PF_OPT_NOACTION) == 0)
            pr.ticket = pfctl_get_ticket(pf->trans, rs_num, path);
      if (strlcpy(pr.anchor, path, sizeof(pr.anchor)) >= sizeof(pr.anchor))
            errx(1, "pfctl_load_rule: strlcpy");

      if (r->anchor) {
            if (r->anchor->match) {
                  if (path[0])
                        snprintf(&path[len], MAXPATHLEN - len,
                            "/%s", r->anchor->name);
                  else
                        snprintf(&path[len], MAXPATHLEN - len,
                            "%s", r->anchor->name);
                  name = path;
            } else
                  name = r->anchor->path;
      } else
            name = "";

      if ((pf->opts & PF_OPT_NOACTION) == 0) {
            if (pfctl_add_pool(pf, &r->rpool, r->af))
                  return (1);
            pr.pool_ticket = pf->paddr.ticket;
            memcpy(&pr.rule, r, sizeof(pr.rule));
            if (r->anchor && strlcpy(pr.anchor_call, name,
                sizeof(pr.anchor_call)) >= sizeof(pr.anchor_call))
                  errx(1, "pfctl_load_rule: strlcpy");
            if (ioctl(pf->dev, DIOCADDRULE, &pr))
                  err(1, "DIOCADDRULE");
      }

      if (pf->opts & PF_OPT_VERBOSE) {
            INDENT(depth, !(pf->opts & PF_OPT_VERBOSE2));
            print_rule(r, r->anchor ? r->anchor->name : "",
                pf->opts & PF_OPT_VERBOSE2);
      }
      path[len] = '\0';
      pfctl_clear_pool(&r->rpool);
      return (0);
}

int
pfctl_add_altq(struct pfctl *pf, struct pf_altq *a)
{
      if (altqsupport &&
          (loadopt & PFCTL_FLAG_ALTQ) != 0) {
            memcpy(&pf->paltq->altq, a, sizeof(struct pf_altq));
            if ((pf->opts & PF_OPT_NOACTION) == 0) {
                  if (ioctl(pf->dev, DIOCADDALTQ, pf->paltq)) {
                        if (errno == ENXIO)
                              errx(1, "qtype not configured");
                        else if (errno == ENODEV)
                              errx(1, "%s: driver does not support "
                                  "altq", a->ifname);
                        else
                              err(1, "DIOCADDALTQ");
                  }
            }
            pfaltq_store(&pf->paltq->altq);
      }
      return (0);
}

int
pfctl_rules(int dev, char *filename, FILE *fin, int opts, int optimize,
    char *anchorname, struct pfr_buffer *trans)
{
#define ERR(x) do { warn(x); goto _error; } while(0)
#define ERRX(x) do { warnx(x); goto _error; } while(0)

      struct pfr_buffer *t, buf;
      struct pfioc_altq  pa;
      struct pfctl             pf;
      struct pf_ruleset *rs;
      struct pfr_table   trs;
      char              *path;
      int                osize;

      RB_INIT(&pf_anchors);
      memset(&pf_main_anchor, 0, sizeof(pf_main_anchor));
      pf_init_ruleset(&pf_main_anchor.ruleset);
      pf_main_anchor.ruleset.anchor = &pf_main_anchor;
      if (trans == NULL) {
            bzero(&buf, sizeof(buf));
            buf.pfrb_type = PFRB_TRANS;
            t = &buf;
            osize = 0;
      } else {
            t = trans;
            osize = t->pfrb_size;
      }

      memset(&pa, 0, sizeof(pa));
      memset(&pf, 0, sizeof(pf));
      memset(&trs, 0, sizeof(trs));
      if ((path = calloc(1, MAXPATHLEN)) == NULL)
            ERRX("pfctl_rules: calloc");
      if (strlcpy(trs.pfrt_anchor, anchorname,
          sizeof(trs.pfrt_anchor)) >= sizeof(trs.pfrt_anchor))
            ERRX("pfctl_rules: strlcpy");
      infile = filename;
      pf.dev = dev;
      pf.opts = opts;
      pf.optimize = optimize;
      pf.loadopt = loadopt;

      /* non-brace anchor, create without resolving the path */
      if ((pf.anchor = calloc(1, sizeof(*pf.anchor))) == NULL)
            ERRX("pfctl_rules: calloc");
      rs = &pf.anchor->ruleset;
      pf_init_ruleset(rs);
      rs->anchor = pf.anchor;
      if (strlcpy(pf.anchor->path, anchorname,
          sizeof(pf.anchor->path)) >= sizeof(pf.anchor->path))
            errx(1, "pfctl_add_rule: strlcpy");
      if (strlcpy(pf.anchor->name, anchorname,
          sizeof(pf.anchor->name)) >= sizeof(pf.anchor->name))
            errx(1, "pfctl_add_rule: strlcpy");


      pf.astack[0] = pf.anchor;
      pf.asd = 0;
      if (anchorname[0])
            pf.loadopt &= ~PFCTL_FLAG_ALTQ;
      pf.paltq = &pa;
      pf.trans = t;
      pfctl_init_options(&pf);

      if ((opts & PF_OPT_NOACTION) == 0) {
            /*
             * XXX For the time being we need to open transactions for
             * the main ruleset before parsing, because tables are still
             * loaded at parse time.
             */
            if (pfctl_ruleset_trans(&pf, anchorname, pf.anchor))
                  ERRX("pfctl_rules");
            if (altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ))
                  pa.ticket =
                      pfctl_get_ticket(t, PF_RULESET_ALTQ, anchorname);
            if (pf.loadopt & PFCTL_FLAG_TABLE)
                  pf.astack[0]->ruleset.tticket =
                      pfctl_get_ticket(t, PF_RULESET_TABLE, anchorname);
      }

      if (parse_rules(fin, &pf) < 0) {
            if ((opts & PF_OPT_NOACTION) == 0)
                  ERRX("Syntax error in config file: "
                      "pf rules not loaded");
            else
                  goto _error;
      }

      if ((pf.loadopt & PFCTL_FLAG_FILTER &&
          (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_SCRUB, 0))) ||
          (pf.loadopt & PFCTL_FLAG_NAT &&
          (pfctl_load_ruleset(&pf, path, rs, PF_RULESET_NAT, 0) ||
          pfctl_load_ruleset(&pf, path, rs, PF_RULESET_RDR, 0) ||
          pfctl_load_ruleset(&pf, path, rs, PF_RULESET_BINAT, 0))) ||
          (pf.loadopt & PFCTL_FLAG_FILTER &&
          pfctl_load_ruleset(&pf, path, rs, PF_RULESET_FILTER, 0))) {
            if ((opts & PF_OPT_NOACTION) == 0)
                  ERRX("Unable to load rules into kernel");
            else
                  goto _error;
      }

      if ((altqsupport && (pf.loadopt & PFCTL_FLAG_ALTQ) != 0))
            if (check_commit_altq(dev, opts) != 0)
                  ERRX("errors in altq config");

      if (fin != stdin) {
            fclose(fin);
            fin = NULL;
      }

      /* process "load anchor" directives */
      if (!anchorname[0])
            if (pfctl_load_anchors(dev, &pf, t) == -1)
                  ERRX("load anchors");

      if (trans == NULL && (opts & PF_OPT_NOACTION) == 0) {
            if (!anchorname[0])
                  if (pfctl_load_options(&pf))
                        goto _error;
            if (pfctl_trans(dev, t, DIOCXCOMMIT, osize))
                  ERR("DIOCXCOMMIT");
      }
      return (0);

_error:
      if (trans == NULL) {    /* main ruleset */
            if ((opts & PF_OPT_NOACTION) == 0)
                  if (pfctl_trans(dev, t, DIOCXROLLBACK, osize))
                        err(1, "DIOCXROLLBACK");
            exit(1);
      } else {          /* sub ruleset */
            if (fin != NULL && fin != stdin)
                  fclose(fin);
            return (-1);
      }

#undef ERR
#undef ERRX
}

FILE *
pfctl_fopen(const char *name, const char *mode)
{
      struct stat  st;
      FILE        *fp;

      fp = fopen(name, mode);
      if (fp == NULL)
            return (NULL);
      if (fstat(fileno(fp), &st)) {
            fclose(fp);
            return (NULL);
      }
      if (S_ISDIR(st.st_mode)) {
            fclose(fp);
            errno = EISDIR;
            return (NULL);
      }
      return (fp);
}

void
pfctl_init_options(struct pfctl *pf)
{
      int mib[2], mem;
      size_t size;

      pf->timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL;
      pf->timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL;
      pf->timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL;
      pf->timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL;
      pf->timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL;
      pf->timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL;
      pf->timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL;
      pf->timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL;
      pf->timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL;
      pf->timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL;
      pf->timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL;
      pf->timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL;
      pf->timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL;
      pf->timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL;
      pf->timeout[PFTM_FRAG] = PFTM_FRAG_VAL;
      pf->timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL;
      pf->timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL;
      pf->timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL;
      pf->timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START;
      pf->timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END;

      pf->limit[PF_LIMIT_STATES] = PFSTATE_HIWAT;
      pf->limit[PF_LIMIT_FRAGS] = PFFRAG_FRENT_HIWAT;
      pf->limit[PF_LIMIT_SRC_NODES] = PFSNODE_HIWAT;
      pf->limit[PF_LIMIT_TABLES] = PFR_KTABLE_HIWAT;
      pf->limit[PF_LIMIT_TABLE_ENTRIES] = PFR_KENTRY_HIWAT;

      mib[0] = CTL_HW;
      mib[1] = HW_PHYSMEM;
      size = sizeof(mem);
      (void) sysctl(mib, 2, &mem, &size, NULL, 0);
      if (mem <= 100*1024*1024)
            pf->limit[PF_LIMIT_TABLE_ENTRIES] = PFR_KENTRY_HIWAT_SMALL; 

      pf->debug = PF_DEBUG_URGENT;
}

int
pfctl_load_options(struct pfctl *pf)
{
      int i, error = 0;

      if ((loadopt & PFCTL_FLAG_OPTION) == 0)
            return (0);

      /* load limits */
      for (i = 0; i < PF_LIMIT_MAX; i++) {
            if ((pf->opts & PF_OPT_MERGE) && !pf->limit_set[i])
                  continue;
            if (pfctl_load_limit(pf, i, pf->limit[i]))
                  error = 1;
      }

      /*
       * If we've set the limit, but havn't explicitly set adaptive
       * timeouts, do it now with a start of 60% and end of 120%.
       */
      if (pf->limit_set[PF_LIMIT_STATES] &&
          !pf->timeout_set[PFTM_ADAPTIVE_START] &&
          !pf->timeout_set[PFTM_ADAPTIVE_END]) {
            pf->timeout[PFTM_ADAPTIVE_START] =
                  (pf->limit[PF_LIMIT_STATES] / 10) * 6;
            pf->timeout_set[PFTM_ADAPTIVE_START] = 1;
            pf->timeout[PFTM_ADAPTIVE_END] =
                  (pf->limit[PF_LIMIT_STATES] / 10) * 12;
            pf->timeout_set[PFTM_ADAPTIVE_END] = 1;
      }

      /* load timeouts */
      for (i = 0; i < PFTM_MAX; i++) {
            if ((pf->opts & PF_OPT_MERGE) && !pf->timeout_set[i])
                  continue;
            if (pfctl_load_timeout(pf, i, pf->timeout[i]))
                  error = 1;
      }

      /* load debug */
      if (!(pf->opts & PF_OPT_MERGE) || pf->debug_set)
            if (pfctl_load_debug(pf, pf->debug))
                  error = 1;

      /* load logif */
      if (!(pf->opts & PF_OPT_MERGE) || pf->ifname_set)
            if (pfctl_load_logif(pf, pf->ifname))
                  error = 1;

      /* load hostid */
      if (!(pf->opts & PF_OPT_MERGE) || pf->hostid_set)
            if (pfctl_load_hostid(pf, pf->hostid))
                  error = 1;

      return (error);
}

int
pfctl_set_limit(struct pfctl *pf, const char *opt, unsigned int limit)
{
      int i;


      for (i = 0; pf_limits[i].name; i++) {
            if (strcasecmp(opt, pf_limits[i].name) == 0) {
                  pf->limit[pf_limits[i].index] = limit;
                  pf->limit_set[pf_limits[i].index] = 1;
                  break;
            }
      }
      if (pf_limits[i].name == NULL) {
            warnx("Bad pool name.");
            return (1);
      }

      if (pf->opts & PF_OPT_VERBOSE)
            printf("set limit %s %d\n", opt, limit);

      return (0);
}

int
pfctl_load_limit(struct pfctl *pf, unsigned int index, unsigned int limit)
{
      struct pfioc_limit pl;

      memset(&pl, 0, sizeof(pl));
      pl.index = index;
      pl.limit = limit;
      if (ioctl(pf->dev, DIOCSETLIMIT, &pl)) {
            if (errno == EBUSY)
                  warnx("Current pool size exceeds requested hard limit");
            else
                  warnx("DIOCSETLIMIT");
            return (1);
      }
      return (0);
}

int
pfctl_set_timeout(struct pfctl *pf, const char *opt, int seconds, int quiet)
{
      int i;

      if ((loadopt & PFCTL_FLAG_OPTION) == 0)
            return (0);

      for (i = 0; pf_timeouts[i].name; i++) {
            if (strcasecmp(opt, pf_timeouts[i].name) == 0) {
                  pf->timeout[pf_timeouts[i].timeout] = seconds;
                  pf->timeout_set[pf_timeouts[i].timeout] = 1;
                  break;
            }
      }

      if (pf_timeouts[i].name == NULL) {
            warnx("Bad timeout name.");
            return (1);
      }


      if (pf->opts & PF_OPT_VERBOSE && ! quiet)
            printf("set timeout %s %d\n", opt, seconds);

      return (0);
}

int
pfctl_load_timeout(struct pfctl *pf, unsigned int timeout, unsigned int seconds)
{
      struct pfioc_tm pt;

      memset(&pt, 0, sizeof(pt));
      pt.timeout = timeout;
      pt.seconds = seconds;
      if (ioctl(pf->dev, DIOCSETTIMEOUT, &pt)) {
            warnx("DIOCSETTIMEOUT");
            return (1);
      }
      return (0);
}

int
pfctl_set_optimization(struct pfctl *pf, const char *opt)
{
      const struct pf_hint *hint;
      int i, r;

      if ((loadopt & PFCTL_FLAG_OPTION) == 0)
            return (0);

      for (i = 0; pf_hints[i].name; i++)
            if (strcasecmp(opt, pf_hints[i].name) == 0)
                  break;

      hint = pf_hints[i].hint;
      if (hint == NULL) {
            warnx("invalid state timeouts optimization");
            return (1);
      }

      for (i = 0; hint[i].name; i++)
            if ((r = pfctl_set_timeout(pf, hint[i].name,
                hint[i].timeout, 1)))
                  return (r);

      if (pf->opts & PF_OPT_VERBOSE)
            printf("set optimization %s\n", opt);

      return (0);
}

int
pfctl_set_logif(struct pfctl *pf, char *ifname)
{

      if ((loadopt & PFCTL_FLAG_OPTION) == 0)
            return (0);

      if (!strcmp(ifname, "none")) {
            free(pf->ifname);
            pf->ifname = NULL;
      } else {
            pf->ifname = strdup(ifname);
            if (!pf->ifname)
                  errx(1, "pfctl_set_logif: strdup");
      }
      pf->ifname_set = 1;

      if (pf->opts & PF_OPT_VERBOSE)
            printf("set loginterface %s\n", ifname);

      return (0);
}

int
pfctl_load_logif(struct pfctl *pf, char *ifname)
{
      struct pfioc_if pi;

      memset(&pi, 0, sizeof(pi));
      if (ifname && strlcpy(pi.ifname, ifname,
          sizeof(pi.ifname)) >= sizeof(pi.ifname)) {
            warnx("pfctl_load_logif: strlcpy");
            return (1);
      }
      if (ioctl(pf->dev, DIOCSETSTATUSIF, &pi)) {
            warnx("DIOCSETSTATUSIF");
            return (1);
      }
      return (0);
}

int
pfctl_set_hostid(struct pfctl *pf, u_int32_t hostid)
{
      if ((loadopt & PFCTL_FLAG_OPTION) == 0)
            return (0);

      HTONL(hostid);

      pf->hostid = hostid;
      pf->hostid_set = 1;

      if (pf->opts & PF_OPT_VERBOSE)
            printf("set hostid 0x%08x\n", ntohl(hostid));

      return (0);
}

int
pfctl_load_hostid(struct pfctl *pf, u_int32_t hostid)
{
      if (ioctl(dev, DIOCSETHOSTID, &hostid)) {
            warnx("DIOCSETHOSTID");
            return (1);
      }
      return (0);
}

int
pfctl_set_debug(struct pfctl *pf, char *d)
{
      u_int32_t   level;

      if ((loadopt & PFCTL_FLAG_OPTION) == 0)
            return (0);

      if (!strcmp(d, "none"))
            pf->debug = PF_DEBUG_NONE;
      else if (!strcmp(d, "urgent"))
            pf->debug = PF_DEBUG_URGENT;
      else if (!strcmp(d, "misc"))
            pf->debug = PF_DEBUG_MISC;
      else if (!strcmp(d, "loud"))
            pf->debug = PF_DEBUG_NOISY;
      else {
            warnx("unknown debug level \"%s\"", d);
            return (-1);
      }

      pf->debug_set = 1;

      if ((pf->opts & PF_OPT_NOACTION) == 0)
            if (ioctl(dev, DIOCSETDEBUG, &level))
                  err(1, "DIOCSETDEBUG");

      if (pf->opts & PF_OPT_VERBOSE)
            printf("set debug %s\n", d);

      return (0);
}

int
pfctl_load_debug(struct pfctl *pf, unsigned int level)
{
      if (ioctl(pf->dev, DIOCSETDEBUG, &level)) {
            warnx("DIOCSETDEBUG");
            return (1);
      }
      return (0);
}

int
pfctl_set_interface_flags(struct pfctl *pf, char *ifname, int flags, int how)
{
      struct pfioc_iface      pi;

      if ((loadopt & PFCTL_FLAG_OPTION) == 0)
            return (0);

      bzero(&pi, sizeof(pi));

      pi.pfiio_flags = flags;

      if (strlcpy(pi.pfiio_name, ifname, sizeof(pi.pfiio_name)) >=
          sizeof(pi.pfiio_name))
            errx(1, "pfctl_set_interface_flags: strlcpy");

      if ((pf->opts & PF_OPT_NOACTION) == 0) {
            if (how == 0) {
                  if (ioctl(pf->dev, DIOCCLRIFFLAG, &pi))
                        err(1, "DIOCCLRIFFLAG");
            } else {
                  if (ioctl(pf->dev, DIOCSETIFFLAG, &pi))
                        err(1, "DIOCSETIFFLAG");
            }
      }
      return (0);
}

void
pfctl_debug(int dev, u_int32_t level, int opts)
{
      if (ioctl(dev, DIOCSETDEBUG, &level))
            err(1, "DIOCSETDEBUG");
      if ((opts & PF_OPT_QUIET) == 0) {
            fprintf(stderr, "debug level set to '");
            switch (level) {
            case PF_DEBUG_NONE:
                  fprintf(stderr, "none");
                  break;
            case PF_DEBUG_URGENT:
                  fprintf(stderr, "urgent");
                  break;
            case PF_DEBUG_MISC:
                  fprintf(stderr, "misc");
                  break;
            case PF_DEBUG_NOISY:
                  fprintf(stderr, "loud");
                  break;
            default:
                  fprintf(stderr, "<invalid>");
                  break;
            }
            fprintf(stderr, "'\n");
      }
}

int
pfctl_test_altqsupport(int dev, int opts)
{
#if defined(__FreeBSD__) && !defined(ENABLE_ALTQ)
      return (0);
#else
      struct pfioc_altq pa;

      if (ioctl(dev, DIOCGETALTQS, &pa)) {
            if (errno == ENODEV) {
                  if (!(opts & PF_OPT_QUIET))
                        fprintf(stderr, "No ALTQ support in kernel\n"
                            "ALTQ related functions disabled\n");
                  return (0);
            } else
                  err(1, "DIOCGETALTQS");
      }
      return (1);
#endif
}

int
pfctl_show_anchors(int dev, int opts, char *anchorname)
{
      struct pfioc_ruleset     pr;
      u_int32_t          mnr, nr;

      memset(&pr, 0, sizeof(pr));
      memcpy(pr.path, anchorname, sizeof(pr.path));
      if (ioctl(dev, DIOCGETRULESETS, &pr)) {
            if (errno == EINVAL)
                  fprintf(stderr, "Anchor '%s' not found.\n",
                      anchorname);
            else
                  err(1, "DIOCGETRULESETS");
            return (-1);
      }
      mnr = pr.nr;
      for (nr = 0; nr < mnr; ++nr) {
            char sub[MAXPATHLEN];

            pr.nr = nr;
            if (ioctl(dev, DIOCGETRULESET, &pr))
                  err(1, "DIOCGETRULESET");
            if (!strcmp(pr.name, PF_RESERVED_ANCHOR))
                  continue;
            sub[0] = 0;
            if (pr.path[0]) {
                  strlcat(sub, pr.path, sizeof(sub));
                  strlcat(sub, "/", sizeof(sub));
            }
            strlcat(sub, pr.name, sizeof(sub));
            if (sub[0] != '_' || (opts & PF_OPT_VERBOSE))
                  printf("  %s\n", sub);
            if ((opts & PF_OPT_VERBOSE) && pfctl_show_anchors(dev, opts, sub))
                  return (-1);
      }
      return (0);
}

const char *
pfctl_lookup_option(char *cmd, const char **list)
{
      if (cmd != NULL && *cmd)
            for (; *list; list++)
                  if (!strncmp(cmd, *list, strlen(cmd)))
                        return (*list);
      return (NULL);
}

int
main(int argc, char *argv[])
{
      int    error = 0;
      int    ch;
      int    mode = O_RDONLY;
      int    opts = 0;
      int    optimize = 0;
      char   anchorname[MAXPATHLEN];
      char  *path;
      FILE  *fin = NULL;

      if (argc < 2)
            usage();

      while ((ch = getopt(argc, argv,
          "a:AdD:eqf:F:ghi:k:K:mnNOo::p:rRs:t:T:vx:z")) != -1) {
            switch (ch) {
            case 'a':
                  anchoropt = optarg;
                  break;
            case 'd':
                  opts |= PF_OPT_DISABLE;
                  mode = O_RDWR;
                  break;
            case 'D':
                  if (pfctl_cmdline_symset(optarg) < 0)
                        warnx("could not parse macro definition %s",
                            optarg);
                  break;
            case 'e':
                  opts |= PF_OPT_ENABLE;
                  mode = O_RDWR;
                  break;
            case 'q':
                  opts |= PF_OPT_QUIET;
                  break;
            case 'F':
                  clearopt = pfctl_lookup_option(optarg, clearopt_list);
                  if (clearopt == NULL) {
                        warnx("Unknown flush modifier '%s'", optarg);
                        usage();
                  }
                  mode = O_RDWR;
                  break;
            case 'i':
                  ifaceopt = optarg;
                  break;
            case 'k':
                  if (state_killers >= 2) {
                        warnx("can only specify -k twice");
                        usage();
                        /* NOTREACHED */
                  }
                  state_kill[state_killers++] = optarg;
                  mode = O_RDWR;
                  break;
            case 'K':
                  if (src_node_killers >= 2) {
                        warnx("can only specify -K twice");
                        usage();
                        /* NOTREACHED */
                  }
                  src_node_kill[src_node_killers++] = optarg;
                  mode = O_RDWR;
                  break;
            case 'm':
                  opts |= PF_OPT_MERGE;
                  break;
            case 'n':
                  opts |= PF_OPT_NOACTION;
                  break;
            case 'N':
                  loadopt |= PFCTL_FLAG_NAT;
                  break;
            case 'r':
                  opts |= PF_OPT_USEDNS;
                  break;
            case 'f':
                  rulesopt = optarg;
                  mode = O_RDWR;
                  break;
            case 'g':
                  opts |= PF_OPT_DEBUG;
                  break;
            case 'A':
                  loadopt |= PFCTL_FLAG_ALTQ;
                  break;
            case 'R':
                  loadopt |= PFCTL_FLAG_FILTER;
                  break;
            case 'o':
                  if (optarg) {
                        optiopt = pfctl_lookup_option(optarg,
                            optiopt_list);
                              if (optiopt == NULL) {
                              warnx("Unknown optimization '%s'",
                                  optarg);
                              usage();
                        }
                  }
                  if (opts & PF_OPT_OPTIMIZE) {
                        if (optiopt != NULL) {
                              warnx("Cannot specify -o multiple times"
                                  "with optimizer level");
                              usage();
                        }
                        optimize |= PF_OPTIMIZE_PROFILE;
                  }
                  optimize |= PF_OPTIMIZE_BASIC;
                  opts |= PF_OPT_OPTIMIZE;
                  break;
            case 'O':
                  loadopt |= PFCTL_FLAG_OPTION;
                  break;
            case 'p':
                  pf_device = optarg;
                  break;
            case 's':
                  showopt = pfctl_lookup_option(optarg, showopt_list);
                  if (showopt == NULL) {
                        warnx("Unknown show modifier '%s'", optarg);
                        usage();
                  }
                  break;
            case 't':
                  tableopt = optarg;
                  break;
            case 'T':
                  tblcmdopt = pfctl_lookup_option(optarg, tblcmdopt_list);
                  if (tblcmdopt == NULL) {
                        warnx("Unknown table command '%s'", optarg);
                        usage();
                  }
                  break;
            case 'v':
                  if (opts & PF_OPT_VERBOSE)
                        opts |= PF_OPT_VERBOSE2;
                  opts |= PF_OPT_VERBOSE;
                  break;
            case 'x':
                  debugopt = pfctl_lookup_option(optarg, debugopt_list);
                  if (debugopt == NULL) {
                        warnx("Unknown debug level '%s'", optarg);
                        usage();
                  }
                  mode = O_RDWR;
                  break;
            case 'z':
                  opts |= PF_OPT_CLRRULECTRS;
                  mode = O_RDWR;
                  break;
            case 'h':
                  /* FALLTHROUGH */
            default:
                  usage();
                  /* NOTREACHED */
            }
      }

      if (tblcmdopt != NULL) {
            argc -= optind;
            argv += optind;
            ch = *tblcmdopt;
            if (ch == 'l') {
                  loadopt |= PFCTL_FLAG_TABLE;
                  tblcmdopt = NULL;
            } else
                  mode = strchr("acdefkrz", ch) ? O_RDWR : O_RDONLY;
      } else if (argc != optind) {
            warnx("unknown command line argument: %s ...", argv[optind]);
            usage();
            /* NOTREACHED */
      }
      if (loadopt == 0)
            loadopt = ~0;

      if ((path = calloc(1, MAXPATHLEN)) == NULL)
            errx(1, "pfctl: calloc");
      memset(anchorname, 0, sizeof(anchorname));
      if (anchoropt != NULL) {
            int len = strlen(anchoropt);

            if (anchoropt[len - 1] == '*') {
                  if (len >= 2 && anchoropt[len - 2] == '/')
                        anchoropt[len - 2] = '\0';
                  else
                        anchoropt[len - 1] = '\0';
                  opts |= PF_OPT_RECURSE;
            }
            if (strlcpy(anchorname, anchoropt,
                sizeof(anchorname)) >= sizeof(anchorname))
                  errx(1, "anchor name '%s' too long",
                      anchoropt);
            loadopt &= PFCTL_FLAG_FILTER|PFCTL_FLAG_NAT|PFCTL_FLAG_TABLE;
      }

      if ((opts & PF_OPT_NOACTION) == 0) {
            dev = open(pf_device, mode);
            if (dev == -1)
                  err(1, "%s", pf_device);
            altqsupport = pfctl_test_altqsupport(dev, opts);
      } else {
            dev = open(pf_device, O_RDONLY);
            if (dev >= 0)
                  opts |= PF_OPT_DUMMYACTION;
            /* turn off options */
            opts &= ~ (PF_OPT_DISABLE | PF_OPT_ENABLE);
            clearopt = showopt = debugopt = NULL;
#if defined(__FreeBSD__) && !defined(ENABLE_ALTQ)
            altqsupport = 0;
#else
            altqsupport = 1;
#endif
      }

      if (opts & PF_OPT_DISABLE)
            if (pfctl_disable(dev, opts))
                  error = 1;

      if (showopt != NULL) {
            switch (*showopt) {
            case 'A':
                  pfctl_show_anchors(dev, opts, anchorname);
                  break;
            case 'r':
                  pfctl_load_fingerprints(dev, opts);
                  pfctl_show_rules(dev, path, opts, PFCTL_SHOW_RULES,
                      anchorname, 0);
                  break;
            case 'l':
                  pfctl_load_fingerprints(dev, opts);
                  pfctl_show_rules(dev, path, opts, PFCTL_SHOW_LABELS,
                      anchorname, 0);
                  break;
            case 'n':
                  pfctl_load_fingerprints(dev, opts);
                  pfctl_show_nat(dev, opts, anchorname);
                  break;
            case 'q':
                  pfctl_show_altq(dev, ifaceopt, opts,
                      opts & PF_OPT_VERBOSE2);
                  break;
            case 's':
                  pfctl_show_states(dev, ifaceopt, opts);
                  break;
            case 'S':
                  pfctl_show_src_nodes(dev, opts);
                  break;
            case 'i':
                  pfctl_show_status(dev, opts);
                  break;
            case 't':
                  pfctl_show_timeouts(dev, opts);
                  break;
            case 'm':
                  pfctl_show_limits(dev, opts);
                  break;
            case 'a':
                  opts |= PF_OPT_SHOWALL;
                  pfctl_load_fingerprints(dev, opts);

                  pfctl_show_nat(dev, opts, anchorname);
                  pfctl_show_rules(dev, path, opts, 0, anchorname, 0);
                  pfctl_show_altq(dev, ifaceopt, opts, 0);
                  pfctl_show_states(dev, ifaceopt, opts);
                  pfctl_show_src_nodes(dev, opts);
                  pfctl_show_status(dev, opts);
                  pfctl_show_rules(dev, path, opts, 1, anchorname, 0);
                  pfctl_show_timeouts(dev, opts);
                  pfctl_show_limits(dev, opts);
                  pfctl_show_tables(anchorname, opts);
                  pfctl_show_fingerprints(opts);
                  break;
            case 'T':
                  pfctl_show_tables(anchorname, opts);
                  break;
            case 'o':
                  pfctl_load_fingerprints(dev, opts);
                  pfctl_show_fingerprints(opts);
                  break;
            case 'I':
                  pfctl_show_ifaces(ifaceopt, opts);
                  break;
            }
      }

      if ((opts & PF_OPT_CLRRULECTRS) && showopt == NULL)
            pfctl_show_rules(dev, path, opts, PFCTL_SHOW_NOTHING,
                anchorname, 0);

      if (clearopt != NULL) {
            if (anchorname[0] == '_' || strstr(anchorname, "/_") != NULL)
                  errx(1, "anchor names beginning with '_' cannot "
                      "be modified from the command line");

            switch (*clearopt) {
            case 'r':
                  pfctl_clear_rules(dev, opts, anchorname);
                  break;
            case 'n':
                  pfctl_clear_nat(dev, opts, anchorname);
                  break;
            case 'q':
                  pfctl_clear_altq(dev, opts);
                  break;
            case 's':
                  pfctl_clear_states(dev, ifaceopt, opts);
                  break;
            case 'S':
                  pfctl_clear_src_nodes(dev, opts);
                  break;
            case 'i':
                  pfctl_clear_stats(dev, opts);
                  break;
            case 'a':
                  pfctl_clear_rules(dev, opts, anchorname);
                  pfctl_clear_nat(dev, opts, anchorname);
                  pfctl_clear_tables(anchorname, opts);
                  if (!*anchorname) {
                        pfctl_clear_altq(dev, opts);
                        pfctl_clear_states(dev, ifaceopt, opts);
                        pfctl_clear_src_nodes(dev, opts);
                        pfctl_clear_stats(dev, opts);
                        pfctl_clear_fingerprints(dev, opts);
                        pfctl_clear_interface_flags(dev, opts);
                  }
                  break;
            case 'o':
                  pfctl_clear_fingerprints(dev, opts);
                  break;
            case 'T':
                  pfctl_clear_tables(anchorname, opts);
                  break;
            }
      }
      if (state_killers)
            pfctl_kill_states(dev, ifaceopt, opts);

      if (src_node_killers)
            pfctl_kill_src_nodes(dev, ifaceopt, opts);

      if (tblcmdopt != NULL) {
            error = pfctl_command_tables(argc, argv, tableopt,
                tblcmdopt, rulesopt, anchorname, opts);
            rulesopt = NULL;
      }
      if (optiopt != NULL) {
            switch (*optiopt) {
            case 'n':
                  optimize = 0;
                  break;
            case 'b':
                  optimize |= PF_OPTIMIZE_BASIC;
                  break;
            case 'o':
            case 'p':
                  optimize |= PF_OPTIMIZE_PROFILE;
                  break;
            }
      }

      if (rulesopt != NULL) {
            if (strcmp(rulesopt, "-") == 0) {
                  fin = stdin;
                  rulesopt = "stdin";
            } else {
                  if ((fin = pfctl_fopen(rulesopt, "r")) == NULL)
                        err(1, "%s", rulesopt);
            }
      }
      if ((rulesopt != NULL) && (loadopt & PFCTL_FLAG_OPTION) &&
          !anchorname[0])
            if (pfctl_clear_interface_flags(dev, opts | PF_OPT_QUIET))
                  error = 1;

      if (rulesopt != NULL && !(opts & (PF_OPT_MERGE|PF_OPT_NOACTION)) &&
          !anchorname[0] && (loadopt & PFCTL_FLAG_OPTION))
            if (pfctl_file_fingerprints(dev, opts, PF_OSFP_FILE))
                  error = 1;

      if (rulesopt != NULL) {
            if (anchorname[0] == '_' || strstr(anchorname, "/_") != NULL)
                  errx(1, "anchor names beginning with '_' cannot "
                      "be modified from the command line");
            if (pfctl_rules(dev, rulesopt, fin, opts, optimize,
                anchorname, NULL))
                  error = 1;
            else if (!(opts & PF_OPT_NOACTION) &&
                (loadopt & PFCTL_FLAG_TABLE))
                  warn_namespace_collision(NULL);
      }

      if (opts & PF_OPT_ENABLE)
            if (pfctl_enable(dev, opts))
                  error = 1;

      if (debugopt != NULL) {
            switch (*debugopt) {
            case 'n':
                  pfctl_debug(dev, PF_DEBUG_NONE, opts);
                  break;
            case 'u':
                  pfctl_debug(dev, PF_DEBUG_URGENT, opts);
                  break;
            case 'm':
                  pfctl_debug(dev, PF_DEBUG_MISC, opts);
                  break;
            case 'l':
                  pfctl_debug(dev, PF_DEBUG_NOISY, opts);
                  break;
            }
      }

      exit(error);
}

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