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pfctl.c
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pfctl.c
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#include <machine/rtems-bsd-user-space.h>
#ifdef __rtems__
#include "rtems-bsd-pfctl-namespace.h"
#define ENABLE_ALTQ
#endif /* __rtems__ */
/* $OpenBSD: pfctl.c,v 1.278 2008/08/31 20:18:17 jmc Exp $ */
/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* 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.
*
*/
#ifdef __rtems__
#define __need_getopt_newlib
#include <getopt.h>
#include <machine/rtems-bsd-program.h>
#include <machine/rtems-bsd-commands.h>
/* Provided by kernel-space modules */
#define pf_get_ruleset_number _bsd_pf_get_ruleset_number
#define pf_init_ruleset _bsd_pf_init_ruleset
#endif /* __rtems__ */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#define PFIOC_USE_LATEST
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/endian.h>
#include <net/if.h>
#include <netinet/in.h>
#include <net/pfvar.h>
#include <arpa/inet.h>
#include <net/altq/altq.h>
#include <sys/sysctl.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <netdb.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "pfctl_parser.h"
#include "pfctl.h"
#ifdef __rtems__
#include "rtems-bsd-pfctl-pfctl-data.h"
#endif /* __rtems__ */
void usage(void);
int pfctl_enable(int, int);
int pfctl_disable(int, int);
int pfctl_clear_stats(int, int);
int pfctl_get_skip_ifaces(void);
int pfctl_check_skip_ifaces(char *);
int pfctl_adjust_skip_ifaces(struct pfctl *);
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_net_kill_states(int, const char *, int);
int pfctl_label_kill_states(int, const char *, int);
int pfctl_id_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 *, u_int32_t);
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_running(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 * const *);
static struct pf_anchor_global pf_anchors;
static struct pf_anchor pf_main_anchor;
static struct pfr_buffer skip_b;
static const char *clearopt;
static char *rulesopt;
static const char *showopt;
static const char *debugopt;
static char *anchoropt;
static const char *optiopt = NULL;
static const char *pf_device = "/dev/pf";
static char *ifaceopt;
static char *tableopt;
static const char *tblcmdopt;
static int src_node_killers;
static char *src_node_kill[2];
static int state_killers;
static char *state_kill[2];
int loadopt;
int altqsupport;
int dev = -1;
static int first_title = 1;
static int labels = 0;
#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 },
{ "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 * const clearopt_list[] = {
"nat", "queue", "rules", "Sources",
"states", "info", "Tables", "osfp", "all", NULL
};
static const char * const showopt_list[] = {
"nat", "queue", "rules", "Anchors", "Sources", "states", "info",
"Interfaces", "labels", "timeouts", "memory", "Tables", "osfp",
"Running", "all", NULL
};
static const char * const tblcmdopt_list[] = {
"kill", "flush", "add", "delete", "load", "replace", "show",
"test", "zero", "expire", NULL
};
static const char * const debugopt_list[] = {
"none", "urgent", "misc", "loud", NULL
};
static const char * const optiopt_list[] = {
"none", "basic", "profile", NULL
};
void
usage(void)
{
#ifndef __rtems__
extern char *__progname;
#else /* __rtems__ */
#define __progname "pfctl"
#endif /* __rtems__ */
fprintf(stderr,
"usage: %s [-AdeghmNnOPqRrvz] [-a anchor] [-D macro=value] [-F modifier]\n"
"\t[-f file] [-i interface] [-K host | network]\n"
"\t[-k host | network | label | id] [-o level] [-p device]\n"
"\t[-s modifier] [-t table -T command [address ...]] [-x level]\n",
__progname);
exit(1);
}
int
pfctl_enable(int dev, int opts)
{
if (ioctl(dev, DIOCSTART)) {
if (errno == EEXIST)
errx(1, "pf already enabled");
else if (errno == ESRCH)
errx(1, "pfil registeration failed");
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_get_skip_ifaces(void)
{
bzero(&skip_b, sizeof(skip_b));
skip_b.pfrb_type = PFRB_IFACES;
for (;;) {
pfr_buf_grow(&skip_b, skip_b.pfrb_size);
skip_b.pfrb_size = skip_b.pfrb_msize;
if (pfi_get_ifaces(NULL, skip_b.pfrb_caddr, &skip_b.pfrb_size))
err(1, "pfi_get_ifaces");
if (skip_b.pfrb_size <= skip_b.pfrb_msize)
break;
}
return (0);
}
int
pfctl_check_skip_ifaces(char *ifname)
{
struct pfi_kif *p;
struct node_host *h = NULL, *n = NULL;
PFRB_FOREACH(p, &skip_b) {
if (!strcmp(ifname, p->pfik_name) &&
(p->pfik_flags & PFI_IFLAG_SKIP))
p->pfik_flags &= ~PFI_IFLAG_SKIP;
if (!strcmp(ifname, p->pfik_name) && p->pfik_group != NULL) {
if ((h = ifa_grouplookup(p->pfik_name, 0)) == NULL)
continue;
for (n = h; n != NULL; n = n->next) {
if (p->pfik_ifp == NULL)
continue;
if (strncmp(p->pfik_name, ifname, IFNAMSIZ))
continue;
p->pfik_flags &= ~PFI_IFLAG_SKIP;
}
}
}
return (0);
}
int
pfctl_adjust_skip_ifaces(struct pfctl *pf)
{
struct pfi_kif *p, *pp;
struct node_host *h = NULL, *n = NULL;
PFRB_FOREACH(p, &skip_b) {
if (p->pfik_group == NULL || !(p->pfik_flags & PFI_IFLAG_SKIP))
continue;
pfctl_set_interface_flags(pf, p->pfik_name, PFI_IFLAG_SKIP, 0);
if ((h = ifa_grouplookup(p->pfik_name, 0)) == NULL)
continue;
for (n = h; n != NULL; n = n->next)
PFRB_FOREACH(pp, &skip_b) {
if (pp->pfik_ifp == NULL)
continue;
if (strncmp(pp->pfik_name, n->ifname, IFNAMSIZ))
continue;
if (!(pp->pfik_flags & PFI_IFLAG_SKIP))
pfctl_set_interface_flags(pf,
pp->pfik_name, PFI_IFLAG_SKIP, 1);
if (pp->pfik_flags & PFI_IFLAG_SKIP)
pp->pfik_flags &= ~PFI_IFLAG_SKIP;
}
}
PFRB_FOREACH(p, &skip_b) {
if (p->pfik_ifp == NULL || ! (p->pfik_flags & PFI_IFLAG_SKIP))
continue;
pfctl_set_interface_flags(pf, p->pfik_name, PFI_IFLAG_SKIP, 0);
}
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_killed);
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_killed;
}
freeaddrinfo(res[1]);
} else {
if (ioctl(dev, DIOCKILLSRCNODES, &psnk))
err(1, "DIOCKILLSRCNODES");
killed += psnk.psnk_killed;
}
}
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_net_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_killed;
}
freeaddrinfo(res[1]);
} else {
if (ioctl(dev, DIOCKILLSTATES, &psk))
err(1, "DIOCKILLSTATES");
killed += psk.psk_killed;
}
}
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_label_kill_states(int dev, const char *iface, int opts)
{
struct pfioc_state_kill psk;
if (state_killers != 2 || (strlen(state_kill[1]) == 0)) {
warnx("no label specified");
usage();
}
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 (strlcpy(psk.psk_label, state_kill[1], sizeof(psk.psk_label)) >=
sizeof(psk.psk_label))
errx(1, "label too long: %s", state_kill[1]);
if (ioctl(dev, DIOCKILLSTATES, &psk))
err(1, "DIOCKILLSTATES");
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "killed %d states\n", psk.psk_killed);
return (0);
}
int
pfctl_id_kill_states(int dev, const char *iface, int opts)
{
struct pfioc_state_kill psk;
if (state_killers != 2 || (strlen(state_kill[1]) == 0)) {
warnx("no id specified");
usage();
}
memset(&psk, 0, sizeof(psk));
if ((sscanf(state_kill[1], "%jx/%x",
&psk.psk_pfcmp.id, &psk.psk_pfcmp.creatorid)) == 2)
HTONL(psk.psk_pfcmp.creatorid);
else if ((sscanf(state_kill[1], "%jx", &psk.psk_pfcmp.id)) == 1) {
psk.psk_pfcmp.creatorid = 0;
} else {
warnx("wrong id format specified");
usage();
}
if (psk.psk_pfcmp.id == 0) {
warnx("cannot kill id 0");
usage();
}
psk.psk_pfcmp.id = htobe64(psk.psk_pfcmp.id);
if (ioctl(dev, DIOCKILLSTATES, &psk))
err(1, "DIOCKILLSTATES");
if ((opts & PF_OPT_QUIET) == 0)
fprintf(stderr, "killed %d states\n", psk.psk_killed);
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: %-6ju]\n",
(unsigned long long)rule->evaluations,
(unsigned long long)(rule->packets[0] +
rule->packets[1]),
(unsigned long long)(rule->bytes[0] +
rule->bytes[1]), (uintmax_t)rule->u_states_cur);
if (!(opts & PF_OPT_DEBUG))
printf(" [ Inserted: uid %u pid %u "
"State Creations: %-6ju]\n",
(unsigned)rule->cuid, (unsigned)rule->cpid,
(uintmax_t)rule->u_states_tot);
}
}
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 numeric = opts & PF_OPT_NUMERIC;
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:
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, numeric);
printf("\n");
pfctl_print_rule_counters(&pr.rule, opts);
break;
case PFCTL_SHOW_NOTHING:
break;
}
pfctl_clear_pool(&pr.rule.rpool);