--- /dev/null
+/*
+ * Copyright (c) 2008 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+
+/* $apfw: pf_ioctl.c,v 1.16 2008/08/27 00:01:32 jhw Exp $ */
+/* $OpenBSD: pf_ioctl.c,v 1.175 2007/02/26 22:47:43 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.
+ *
+ * Effort sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F30602-01-2-0537.
+ *
+ */
+
+#include <machine/endian.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/mbuf.h>
+#include <sys/filio.h>
+#include <sys/fcntl.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <sys/kernel.h>
+#include <sys/time.h>
+#include <sys/proc_internal.h>
+#include <sys/malloc.h>
+#include <sys/kauth.h>
+#include <sys/conf.h>
+#include <sys/mcache.h>
+
+#include <mach/vm_param.h>
+
+#include <net/if.h>
+#include <net/if_types.h>
+#include <net/route.h>
+
+#include <netinet/in.h>
+#include <netinet/in_var.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netinet/ip_var.h>
+#include <netinet/ip_icmp.h>
+#include <netinet/if_ether.h>
+
+#include <libkern/crypto/md5.h>
+
+#include <miscfs/devfs/devfs.h>
+
+#include <net/pfvar.h>
+
+#if NPFSYNC
+#include <net/if_pfsync.h>
+#endif /* NPFSYNC */
+
+#if PFLOG
+#include <net/if_pflog.h>
+#endif /* PFLOG */
+
+#if INET6
+#include <netinet/ip6.h>
+#include <netinet/in_pcb.h>
+#endif /* INET6 */
+
+#if ALTQ
+#include <altq/altq.h>
+#endif /* ALTQ */
+
+#if 0
+static void pfdetach(void);
+#endif
+static int pfopen(dev_t, int, int, struct proc *);
+static int pfclose(dev_t, int, int, struct proc *);
+static int pfioctl(dev_t, u_long, caddr_t, int, struct proc *);
+static struct pf_pool *pf_get_pool(char *, u_int32_t, u_int8_t, u_int32_t,
+ u_int8_t, u_int8_t, u_int8_t);
+
+static void pf_mv_pool(struct pf_palist *, struct pf_palist *);
+static void pf_empty_pool(struct pf_palist *);
+#if ALTQ
+static int pf_begin_altq(u_int32_t *);
+static int pf_rollback_altq(u_int32_t);
+static int pf_commit_altq(u_int32_t);
+static int pf_enable_altq(struct pf_altq *);
+static int pf_disable_altq(struct pf_altq *);
+#endif /* ALTQ */
+static int pf_begin_rules(u_int32_t *, int, const char *);
+static int pf_rollback_rules(u_int32_t, int, char *);
+static int pf_setup_pfsync_matching(struct pf_ruleset *);
+static void pf_hash_rule(MD5_CTX *, struct pf_rule *);
+#ifndef NO_APPLE_EXTENSIONS
+static void pf_hash_rule_addr(MD5_CTX *, struct pf_rule_addr *, u_int8_t);
+#else
+static void pf_hash_rule_addr(MD5_CTX *, struct pf_rule_addr *);
+#endif
+static int pf_commit_rules(u_int32_t, int, char *);
+static void pf_state_export(struct pfsync_state *, struct pf_state_key *,
+ struct pf_state *);
+static void pf_state_import(struct pfsync_state *, struct pf_state_key *,
+ struct pf_state *);
+
+#define PF_CDEV_MAJOR (-1)
+
+static struct cdevsw pf_cdevsw = {
+ /* open */ pfopen,
+ /* close */ pfclose,
+ /* read */ eno_rdwrt,
+ /* write */ eno_rdwrt,
+ /* ioctl */ pfioctl,
+ /* stop */ eno_stop,
+ /* reset */ eno_reset,
+ /* tty */ NULL,
+ /* select */ eno_select,
+ /* mmap */ eno_mmap,
+ /* strategy */ eno_strat,
+ /* getc */ eno_getc,
+ /* putc */ eno_putc,
+ /* type */ 0
+};
+
+static void pf_attach_hooks(void);
+static void pf_detach_hooks(void);
+static int pf_hooks_attached = 0;
+
+struct pf_rule pf_default_rule;
+#if ALTQ
+static int pf_altq_running;
+#endif /* ALTQ */
+
+#define TAGID_MAX 50000
+static TAILQ_HEAD(pf_tags, pf_tagname) pf_tags =
+ TAILQ_HEAD_INITIALIZER(pf_tags);
+#if ALTQ
+static TAILQ_HEAD(pf_tags, pf_tagname) pf_qids =
+ TAILQ_HEAD_INITIALIZER(pf_qids);
+#endif /* ALTQ */
+
+#if (PF_QNAME_SIZE != PF_TAG_NAME_SIZE)
+#error PF_QNAME_SIZE must be equal to PF_TAG_NAME_SIZE
+#endif
+static u_int16_t tagname2tag(struct pf_tags *, char *);
+static void tag2tagname(struct pf_tags *, u_int16_t, char *);
+static void tag_unref(struct pf_tags *, u_int16_t);
+static int pf_rtlabel_add(struct pf_addr_wrap *);
+static void pf_rtlabel_remove(struct pf_addr_wrap *);
+static void pf_rtlabel_copyout(struct pf_addr_wrap *);
+
+#if INET
+static int pf_inet_hook(struct ifnet *, struct mbuf **, int);
+#endif /* INET */
+#if INET6
+static int pf_inet6_hook(struct ifnet *, struct mbuf **, int);
+#endif /* INET6 */
+
+#define DPFPRINTF(n, x) if (pf_status.debug >= (n)) printf x
+
+static lck_attr_t *pf_perim_lock_attr;
+static lck_grp_t *pf_perim_lock_grp;
+static lck_grp_attr_t *pf_perim_lock_grp_attr;
+
+static lck_attr_t *pf_lock_attr;
+static lck_grp_t *pf_lock_grp;
+static lck_grp_attr_t *pf_lock_grp_attr;
+
+struct thread *pf_purge_thread;
+
+extern void pfi_kifaddr_update(void *);
+
+void
+pfinit(void)
+{
+ u_int32_t *t = pf_default_rule.timeout;
+ int maj;
+
+ pf_perim_lock_grp_attr = lck_grp_attr_alloc_init();
+ pf_perim_lock_grp = lck_grp_alloc_init("pf_perim",
+ pf_perim_lock_grp_attr);
+ pf_perim_lock_attr = lck_attr_alloc_init();
+ pf_perim_lock = lck_rw_alloc_init(pf_perim_lock_grp,
+ pf_perim_lock_attr);
+
+ pf_lock_grp_attr = lck_grp_attr_alloc_init();
+ pf_lock_grp = lck_grp_alloc_init("pf", pf_lock_grp_attr);
+ pf_lock_attr = lck_attr_alloc_init();
+ pf_lock = lck_mtx_alloc_init(pf_lock_grp, pf_lock_attr);
+
+ pool_init(&pf_rule_pl, sizeof (struct pf_rule), 0, 0, 0, "pfrulepl",
+ NULL);
+ pool_init(&pf_src_tree_pl, sizeof (struct pf_src_node), 0, 0, 0,
+ "pfsrctrpl", NULL);
+ pool_init(&pf_state_pl, sizeof (struct pf_state), 0, 0, 0, "pfstatepl",
+ NULL);
+ pool_init(&pf_state_key_pl, sizeof (struct pf_state_key), 0, 0, 0,
+ "pfstatekeypl", NULL);
+#ifndef NO_APPLE_EXTENSIONS
+ pool_init(&pf_app_state_pl, sizeof (struct pf_app_state), 0, 0, 0,
+ "pfappstatepl", NULL);
+#endif
+#if ALTQ
+ pool_init(&pf_altq_pl, sizeof (struct pf_altq), 0, 0, 0, "pfaltqpl",
+ NULL);
+#endif /* ALTQ */
+ pool_init(&pf_pooladdr_pl, sizeof (struct pf_pooladdr), 0, 0, 0,
+ "pfpooladdrpl", NULL);
+ pfr_initialize();
+ pfi_initialize();
+ pf_osfp_initialize();
+
+ pool_sethardlimit(pf_pool_limits[PF_LIMIT_STATES].pp,
+ pf_pool_limits[PF_LIMIT_STATES].limit, NULL, 0);
+
+ if (max_mem <= 256*1024*1024)
+ pf_pool_limits[PF_LIMIT_TABLE_ENTRIES].limit =
+ PFR_KENTRY_HIWAT_SMALL;
+
+ RB_INIT(&tree_src_tracking);
+ RB_INIT(&pf_anchors);
+ pf_init_ruleset(&pf_main_ruleset);
+ TAILQ_INIT(&pf_pabuf);
+ TAILQ_INIT(&state_list);
+#if ALTQ
+ TAILQ_INIT(&pf_altqs[0]);
+ TAILQ_INIT(&pf_altqs[1]);
+ pf_altqs_active = &pf_altqs[0];
+ pf_altqs_inactive = &pf_altqs[1];
+#endif /* ALTQ */
+
+ /* default rule should never be garbage collected */
+ pf_default_rule.entries.tqe_prev = &pf_default_rule.entries.tqe_next;
+ pf_default_rule.action = PF_PASS;
+ pf_default_rule.nr = -1;
+ pf_default_rule.rtableid = IFSCOPE_NONE;
+
+ /* initialize default timeouts */
+ t[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL;
+ t[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL;
+ t[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL;
+ t[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL;
+ t[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL;
+ t[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL;
+ t[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL;
+ t[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL;
+ t[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL;
+ t[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL;
+ t[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL;
+#ifndef NO_APPLE_EXTENSIONS
+ t[PFTM_GREv1_FIRST_PACKET] = PFTM_GREv1_FIRST_PACKET_VAL;
+ t[PFTM_GREv1_INITIATING] = PFTM_GREv1_INITIATING_VAL;
+ t[PFTM_GREv1_ESTABLISHED] = PFTM_GREv1_ESTABLISHED_VAL;
+ t[PFTM_ESP_FIRST_PACKET] = PFTM_ESP_FIRST_PACKET_VAL;
+ t[PFTM_ESP_INITIATING] = PFTM_ESP_INITIATING_VAL;
+ t[PFTM_ESP_ESTABLISHED] = PFTM_ESP_ESTABLISHED_VAL;
+#endif
+ t[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL;
+ t[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL;
+ t[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL;
+ t[PFTM_FRAG] = PFTM_FRAG_VAL;
+ t[PFTM_INTERVAL] = PFTM_INTERVAL_VAL;
+ t[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL;
+ t[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL;
+ t[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START;
+ t[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END;
+
+ pf_normalize_init();
+ bzero(&pf_status, sizeof (pf_status));
+ pf_status.debug = PF_DEBUG_URGENT;
+
+ /* XXX do our best to avoid a conflict */
+ pf_status.hostid = random();
+
+ if (kernel_thread_start(pf_purge_thread_fn, NULL,
+ &pf_purge_thread) != 0) {
+ printf("%s: unable to start purge thread!", __func__);
+ return;
+ }
+
+ maj = cdevsw_add(PF_CDEV_MAJOR, &pf_cdevsw);
+ if (maj == -1) {
+ printf("%s: failed to allocate major number!\n", __func__);
+ return;
+ }
+ (void) devfs_make_node(makedev(maj, 0), DEVFS_CHAR,
+ UID_ROOT, GID_WHEEL, 0600, "pf", 0);
+}
+
+#if 0
+static void
+pfdetach(void)
+{
+ struct pf_anchor *anchor;
+ struct pf_state *state;
+ struct pf_src_node *node;
+ struct pfioc_table pt;
+ u_int32_t ticket;
+ int i;
+ char r = '\0';
+
+ pf_status.running = 0;
+ wakeup(pf_purge_thread_fn);
+
+ /* clear the rulesets */
+ for (i = 0; i < PF_RULESET_MAX; i++)
+ if (pf_begin_rules(&ticket, i, &r) == 0)
+ pf_commit_rules(ticket, i, &r);
+#if ALTQ
+ if (pf_begin_altq(&ticket) == 0)
+ pf_commit_altq(ticket);
+#endif /* ALTQ */
+
+ /* clear states */
+ RB_FOREACH(state, pf_state_tree_id, &tree_id) {
+ state->timeout = PFTM_PURGE;
+#if NPFSYNC
+ state->sync_flags = PFSTATE_NOSYNC;
+#endif
+ }
+ pf_purge_expired_states(pf_status.states);
+
+#if NPFSYNC
+ pfsync_clear_states(pf_status.hostid, NULL);
+#endif
+
+ /* clear source nodes */
+ RB_FOREACH(state, pf_state_tree_id, &tree_id) {
+ state->src_node = NULL;
+ state->nat_src_node = NULL;
+ }
+ RB_FOREACH(node, pf_src_tree, &tree_src_tracking) {
+ node->expire = 1;
+ node->states = 0;
+ }
+ pf_purge_expired_src_nodes();
+
+ /* clear tables */
+ memset(&pt, '\0', sizeof (pt));
+ pfr_clr_tables(&pt.pfrio_table, &pt.pfrio_ndel, pt.pfrio_flags);
+
+ /* destroy anchors */
+ while ((anchor = RB_MIN(pf_anchor_global, &pf_anchors)) != NULL) {
+ for (i = 0; i < PF_RULESET_MAX; i++)
+ if (pf_begin_rules(&ticket, i, anchor->name) == 0)
+ pf_commit_rules(ticket, i, anchor->name);
+ }
+
+ /* destroy main ruleset */
+ pf_remove_if_empty_ruleset(&pf_main_ruleset);
+
+ /* destroy the pools */
+ pool_destroy(&pf_pooladdr_pl);
+#if ALTQ
+ pool_destroy(&pf_altq_pl);
+#endif /* ALTQ */
+ pool_destroy(&pf_state_pl);
+ pool_destroy(&pf_rule_pl);
+ pool_destroy(&pf_src_tree_pl);
+
+ /* destroy subsystems */
+ pf_normalize_destroy();
+ pf_osfp_destroy();
+ pfr_destroy();
+ pfi_destroy();
+}
+#endif
+
+static int
+pfopen(dev_t dev, int flags, int fmt, struct proc *p)
+{
+#pragma unused(flags, fmt, p)
+ if (minor(dev) >= 1)
+ return (ENXIO);
+ return (0);
+}
+
+static int
+pfclose(dev_t dev, int flags, int fmt, struct proc *p)
+{
+#pragma unused(flags, fmt, p)
+ if (minor(dev) >= 1)
+ return (ENXIO);
+ return (0);
+}
+
+static struct pf_pool *
+pf_get_pool(char *anchor, u_int32_t ticket, u_int8_t rule_action,
+ u_int32_t rule_number, u_int8_t r_last, u_int8_t active,
+ u_int8_t check_ticket)
+{
+ struct pf_ruleset *ruleset;
+ struct pf_rule *rule;
+ int rs_num;
+
+ ruleset = pf_find_ruleset(anchor);
+ if (ruleset == NULL)
+ return (NULL);
+ rs_num = pf_get_ruleset_number(rule_action);
+ if (rs_num >= PF_RULESET_MAX)
+ return (NULL);
+ if (active) {
+ if (check_ticket && ticket !=
+ ruleset->rules[rs_num].active.ticket)
+ return (NULL);
+ if (r_last)
+ rule = TAILQ_LAST(ruleset->rules[rs_num].active.ptr,
+ pf_rulequeue);
+ else
+ rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr);
+ } else {
+ if (check_ticket && ticket !=
+ ruleset->rules[rs_num].inactive.ticket)
+ return (NULL);
+ if (r_last)
+ rule = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr,
+ pf_rulequeue);
+ else
+ rule = TAILQ_FIRST(ruleset->rules[rs_num].inactive.ptr);
+ }
+ if (!r_last) {
+ while ((rule != NULL) && (rule->nr != rule_number))
+ rule = TAILQ_NEXT(rule, entries);
+ }
+ if (rule == NULL)
+ return (NULL);
+
+ return (&rule->rpool);
+}
+
+static void
+pf_mv_pool(struct pf_palist *poola, struct pf_palist *poolb)
+{
+ struct pf_pooladdr *mv_pool_pa;
+
+ while ((mv_pool_pa = TAILQ_FIRST(poola)) != NULL) {
+ TAILQ_REMOVE(poola, mv_pool_pa, entries);
+ TAILQ_INSERT_TAIL(poolb, mv_pool_pa, entries);
+ }
+}
+
+static void
+pf_empty_pool(struct pf_palist *poola)
+{
+ struct pf_pooladdr *empty_pool_pa;
+
+ while ((empty_pool_pa = TAILQ_FIRST(poola)) != NULL) {
+ pfi_dynaddr_remove(&empty_pool_pa->addr);
+ pf_tbladdr_remove(&empty_pool_pa->addr);
+ pfi_kif_unref(empty_pool_pa->kif, PFI_KIF_REF_RULE);
+ TAILQ_REMOVE(poola, empty_pool_pa, entries);
+ pool_put(&pf_pooladdr_pl, empty_pool_pa);
+ }
+}
+
+void
+pf_rm_rule(struct pf_rulequeue *rulequeue, struct pf_rule *rule)
+{
+ if (rulequeue != NULL) {
+ if (rule->states <= 0) {
+ /*
+ * XXX - we need to remove the table *before* detaching
+ * the rule to make sure the table code does not delete
+ * the anchor under our feet.
+ */
+ pf_tbladdr_remove(&rule->src.addr);
+ pf_tbladdr_remove(&rule->dst.addr);
+ if (rule->overload_tbl)
+ pfr_detach_table(rule->overload_tbl);
+ }
+ TAILQ_REMOVE(rulequeue, rule, entries);
+ rule->entries.tqe_prev = NULL;
+ rule->nr = -1;
+ }
+
+ if (rule->states > 0 || rule->src_nodes > 0 ||
+ rule->entries.tqe_prev != NULL)
+ return;
+ pf_tag_unref(rule->tag);
+ pf_tag_unref(rule->match_tag);
+#if ALTQ
+ if (rule->pqid != rule->qid)
+ pf_qid_unref(rule->pqid);
+ pf_qid_unref(rule->qid);
+#endif /* ALTQ */
+ pf_rtlabel_remove(&rule->src.addr);
+ pf_rtlabel_remove(&rule->dst.addr);
+ pfi_dynaddr_remove(&rule->src.addr);
+ pfi_dynaddr_remove(&rule->dst.addr);
+ if (rulequeue == NULL) {
+ pf_tbladdr_remove(&rule->src.addr);
+ pf_tbladdr_remove(&rule->dst.addr);
+ if (rule->overload_tbl)
+ pfr_detach_table(rule->overload_tbl);
+ }
+ pfi_kif_unref(rule->kif, PFI_KIF_REF_RULE);
+ pf_anchor_remove(rule);
+ pf_empty_pool(&rule->rpool.list);
+ pool_put(&pf_rule_pl, rule);
+}
+
+static u_int16_t
+tagname2tag(struct pf_tags *head, char *tagname)
+{
+ struct pf_tagname *tag, *p = NULL;
+ u_int16_t new_tagid = 1;
+
+ TAILQ_FOREACH(tag, head, entries)
+ if (strcmp(tagname, tag->name) == 0) {
+ tag->ref++;
+ return (tag->tag);
+ }
+
+ /*
+ * to avoid fragmentation, we do a linear search from the beginning
+ * and take the first free slot we find. if there is none or the list
+ * is empty, append a new entry at the end.
+ */
+
+ /* new entry */
+ if (!TAILQ_EMPTY(head))
+ for (p = TAILQ_FIRST(head); p != NULL &&
+ p->tag == new_tagid; p = TAILQ_NEXT(p, entries))
+ new_tagid = p->tag + 1;
+
+ if (new_tagid > TAGID_MAX)
+ return (0);
+
+ /* allocate and fill new struct pf_tagname */
+ tag = _MALLOC(sizeof (*tag), M_TEMP, M_WAITOK|M_ZERO);
+ if (tag == NULL)
+ return (0);
+ strlcpy(tag->name, tagname, sizeof (tag->name));
+ tag->tag = new_tagid;
+ tag->ref++;
+
+ if (p != NULL) /* insert new entry before p */
+ TAILQ_INSERT_BEFORE(p, tag, entries);
+ else /* either list empty or no free slot in between */
+ TAILQ_INSERT_TAIL(head, tag, entries);
+
+ return (tag->tag);
+}
+
+static void
+tag2tagname(struct pf_tags *head, u_int16_t tagid, char *p)
+{
+ struct pf_tagname *tag;
+
+ TAILQ_FOREACH(tag, head, entries)
+ if (tag->tag == tagid) {
+ strlcpy(p, tag->name, PF_TAG_NAME_SIZE);
+ return;
+ }
+}
+
+static void
+tag_unref(struct pf_tags *head, u_int16_t tag)
+{
+ struct pf_tagname *p, *next;
+
+ if (tag == 0)
+ return;
+
+ for (p = TAILQ_FIRST(head); p != NULL; p = next) {
+ next = TAILQ_NEXT(p, entries);
+ if (tag == p->tag) {
+ if (--p->ref == 0) {
+ TAILQ_REMOVE(head, p, entries);
+ _FREE(p, M_TEMP);
+ }
+ break;
+ }
+ }
+}
+
+u_int16_t
+pf_tagname2tag(char *tagname)
+{
+ return (tagname2tag(&pf_tags, tagname));
+}
+
+void
+pf_tag2tagname(u_int16_t tagid, char *p)
+{
+ tag2tagname(&pf_tags, tagid, p);
+}
+
+void
+pf_tag_ref(u_int16_t tag)
+{
+ struct pf_tagname *t;
+
+ TAILQ_FOREACH(t, &pf_tags, entries)
+ if (t->tag == tag)
+ break;
+ if (t != NULL)
+ t->ref++;
+}
+
+void
+pf_tag_unref(u_int16_t tag)
+{
+ tag_unref(&pf_tags, tag);
+}
+
+static int
+pf_rtlabel_add(struct pf_addr_wrap *a)
+{
+#pragma unused(a)
+ return (0);
+}
+
+static void
+pf_rtlabel_remove(struct pf_addr_wrap *a)
+{
+#pragma unused(a)
+}
+
+static void
+pf_rtlabel_copyout(struct pf_addr_wrap *a)
+{
+#pragma unused(a)
+}
+
+#if ALTQ
+u_int32_t
+pf_qname2qid(char *qname)
+{
+ return ((u_int32_t)tagname2tag(&pf_qids, qname));
+}
+
+void
+pf_qid2qname(u_int32_t qid, char *p)
+{
+ tag2tagname(&pf_qids, (u_int16_t)qid, p);
+}
+
+void
+pf_qid_unref(u_int32_t qid)
+{
+ tag_unref(&pf_qids, (u_int16_t)qid);
+}
+
+static int
+pf_begin_altq(u_int32_t *ticket)
+{
+ struct pf_altq *altq;
+ int error = 0;
+
+ /* Purge the old altq list */
+ while ((altq = TAILQ_FIRST(pf_altqs_inactive)) != NULL) {
+ TAILQ_REMOVE(pf_altqs_inactive, altq, entries);
+ if (altq->qname[0] == 0) {
+ /* detach and destroy the discipline */
+ error = altq_remove(altq);
+ } else
+ pf_qid_unref(altq->qid);
+ pool_put(&pf_altq_pl, altq);
+ }
+ if (error)
+ return (error);
+ *ticket = ++ticket_altqs_inactive;
+ altqs_inactive_open = 1;
+ return (0);
+}
+
+static int
+pf_rollback_altq(u_int32_t ticket)
+{
+ struct pf_altq *altq;
+ int error = 0;
+
+ if (!altqs_inactive_open || ticket != ticket_altqs_inactive)
+ return (0);
+ /* Purge the old altq list */
+ while ((altq = TAILQ_FIRST(pf_altqs_inactive)) != NULL) {
+ TAILQ_REMOVE(pf_altqs_inactive, altq, entries);
+ if (altq->qname[0] == 0) {
+ /* detach and destroy the discipline */
+ error = altq_remove(altq);
+ } else
+ pf_qid_unref(altq->qid);
+ pool_put(&pf_altq_pl, altq);
+ }
+ altqs_inactive_open = 0;
+ return (error);
+}
+
+static int
+pf_commit_altq(u_int32_t ticket)
+{
+ struct pf_altqqueue *old_altqs;
+ struct pf_altq *altq;
+ int s, err, error = 0;
+
+ if (!altqs_inactive_open || ticket != ticket_altqs_inactive)
+ return (EBUSY);
+
+ /* swap altqs, keep the old. */
+ s = splnet();
+ old_altqs = pf_altqs_active;
+ pf_altqs_active = pf_altqs_inactive;
+ pf_altqs_inactive = old_altqs;
+ ticket_altqs_active = ticket_altqs_inactive;
+
+ /* Attach new disciplines */
+ TAILQ_FOREACH(altq, pf_altqs_active, entries) {
+ if (altq->qname[0] == 0) {
+ /* attach the discipline */
+ error = altq_pfattach(altq);
+ if (error == 0 && pf_altq_running)
+ error = pf_enable_altq(altq);
+ if (error != 0) {
+ splx(s);
+ return (error);
+ }
+ }
+ }
+
+ /* Purge the old altq list */
+ while ((altq = TAILQ_FIRST(pf_altqs_inactive)) != NULL) {
+ TAILQ_REMOVE(pf_altqs_inactive, altq, entries);
+ if (altq->qname[0] == 0) {
+ /* detach and destroy the discipline */
+ if (pf_altq_running)
+ error = pf_disable_altq(altq);
+ err = altq_pfdetach(altq);
+ if (err != 0 && error == 0)
+ error = err;
+ err = altq_remove(altq);
+ if (err != 0 && error == 0)
+ error = err;
+ } else
+ pf_qid_unref(altq->qid);
+ pool_put(&pf_altq_pl, altq);
+ }
+ splx(s);
+
+ altqs_inactive_open = 0;
+ return (error);
+}
+
+static int
+pf_enable_altq(struct pf_altq *altq)
+{
+ struct ifnet *ifp;
+ struct tb_profile tb;
+ int s, error = 0;
+
+ if ((ifp = ifunit(altq->ifname)) == NULL)
+ return (EINVAL);
+
+ if (ifp->if_snd.altq_type != ALTQT_NONE)
+ error = altq_enable(&ifp->if_snd);
+
+ /* set tokenbucket regulator */
+ if (error == 0 && ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) {
+ tb.rate = altq->ifbandwidth;
+ tb.depth = altq->tbrsize;
+ s = splnet();
+ error = tbr_set(&ifp->if_snd, &tb);
+ splx(s);
+ }
+
+ return (error);
+}
+
+static int
+pf_disable_altq(struct pf_altq *altq)
+{
+ struct ifnet *ifp;
+ struct tb_profile tb;
+ int s, error;
+
+ if ((ifp = ifunit(altq->ifname)) == NULL)
+ return (EINVAL);
+
+ /*
+ * when the discipline is no longer referenced, it was overridden
+ * by a new one. if so, just return.
+ */
+ if (altq->altq_disc != ifp->if_snd.altq_disc)
+ return (0);
+
+ error = altq_disable(&ifp->if_snd);
+
+ if (error == 0) {
+ /* clear tokenbucket regulator */
+ tb.rate = 0;
+ s = splnet();
+ error = tbr_set(&ifp->if_snd, &tb);
+ splx(s);
+ }
+
+ return (error);
+}
+#endif /* ALTQ */
+
+static int
+pf_begin_rules(u_int32_t *ticket, int rs_num, const char *anchor)
+{
+ struct pf_ruleset *rs;
+ struct pf_rule *rule;
+
+ if (rs_num < 0 || rs_num >= PF_RULESET_MAX)
+ return (EINVAL);
+ rs = pf_find_or_create_ruleset(anchor);
+ if (rs == NULL)
+ return (EINVAL);
+ while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) {
+ pf_rm_rule(rs->rules[rs_num].inactive.ptr, rule);
+ rs->rules[rs_num].inactive.rcount--;
+ }
+ *ticket = ++rs->rules[rs_num].inactive.ticket;
+ rs->rules[rs_num].inactive.open = 1;
+ return (0);
+}
+
+static int
+pf_rollback_rules(u_int32_t ticket, int rs_num, char *anchor)
+{
+ struct pf_ruleset *rs;
+ struct pf_rule *rule;
+
+ if (rs_num < 0 || rs_num >= PF_RULESET_MAX)
+ return (EINVAL);
+ rs = pf_find_ruleset(anchor);
+ if (rs == NULL || !rs->rules[rs_num].inactive.open ||
+ rs->rules[rs_num].inactive.ticket != ticket)
+ return (0);
+ while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) {
+ pf_rm_rule(rs->rules[rs_num].inactive.ptr, rule);
+ rs->rules[rs_num].inactive.rcount--;
+ }
+ rs->rules[rs_num].inactive.open = 0;
+ return (0);
+}
+
+#define PF_MD5_UPD(st, elm) \
+ MD5Update(ctx, (u_int8_t *)&(st)->elm, sizeof ((st)->elm))
+
+#define PF_MD5_UPD_STR(st, elm) \
+ MD5Update(ctx, (u_int8_t *)(st)->elm, strlen((st)->elm))
+
+#define PF_MD5_UPD_HTONL(st, elm, stor) do { \
+ (stor) = htonl((st)->elm); \
+ MD5Update(ctx, (u_int8_t *)&(stor), sizeof (u_int32_t)); \
+} while (0)
+
+#define PF_MD5_UPD_HTONS(st, elm, stor) do { \
+ (stor) = htons((st)->elm); \
+ MD5Update(ctx, (u_int8_t *)&(stor), sizeof (u_int16_t)); \
+} while (0)
+
+#ifndef NO_APPLE_EXTENSIONS
+static void
+pf_hash_rule_addr(MD5_CTX *ctx, struct pf_rule_addr *pfr, u_int8_t proto)
+#else
+static void
+pf_hash_rule_addr(MD5_CTX *ctx, struct pf_rule_addr *pfr)
+#endif
+{
+ PF_MD5_UPD(pfr, addr.type);
+ switch (pfr->addr.type) {
+ case PF_ADDR_DYNIFTL:
+ PF_MD5_UPD(pfr, addr.v.ifname);
+ PF_MD5_UPD(pfr, addr.iflags);
+ break;
+ case PF_ADDR_TABLE:
+ PF_MD5_UPD(pfr, addr.v.tblname);
+ break;
+ case PF_ADDR_ADDRMASK:
+ /* XXX ignore af? */
+ PF_MD5_UPD(pfr, addr.v.a.addr.addr32);
+ PF_MD5_UPD(pfr, addr.v.a.mask.addr32);
+ break;
+ case PF_ADDR_RTLABEL:
+ PF_MD5_UPD(pfr, addr.v.rtlabelname);
+ break;
+ }
+
+#ifndef NO_APPLE_EXTENSIONS
+ switch (proto) {
+ case IPPROTO_TCP:
+ case IPPROTO_UDP:
+ PF_MD5_UPD(pfr, xport.range.port[0]);
+ PF_MD5_UPD(pfr, xport.range.port[1]);
+ PF_MD5_UPD(pfr, xport.range.op);
+ break;
+
+ default:
+ break;
+ }
+
+ PF_MD5_UPD(pfr, neg);
+#else
+ PF_MD5_UPD(pfr, port[0]);
+ PF_MD5_UPD(pfr, port[1]);
+ PF_MD5_UPD(pfr, neg);
+ PF_MD5_UPD(pfr, port_op);
+#endif
+}
+
+static void
+pf_hash_rule(MD5_CTX *ctx, struct pf_rule *rule)
+{
+ u_int16_t x;
+ u_int32_t y;
+
+#ifndef NO_APPLE_EXTENSIONS
+ pf_hash_rule_addr(ctx, &rule->src, rule->proto);
+ pf_hash_rule_addr(ctx, &rule->dst, rule->proto);
+#else
+ pf_hash_rule_addr(ctx, &rule->src);
+ pf_hash_rule_addr(ctx, &rule->dst);
+#endif
+ PF_MD5_UPD_STR(rule, label);
+ PF_MD5_UPD_STR(rule, ifname);
+ PF_MD5_UPD_STR(rule, match_tagname);
+ PF_MD5_UPD_HTONS(rule, match_tag, x); /* dup? */
+ PF_MD5_UPD_HTONL(rule, os_fingerprint, y);
+ PF_MD5_UPD_HTONL(rule, prob, y);
+ PF_MD5_UPD_HTONL(rule, uid.uid[0], y);
+ PF_MD5_UPD_HTONL(rule, uid.uid[1], y);
+ PF_MD5_UPD(rule, uid.op);
+ PF_MD5_UPD_HTONL(rule, gid.gid[0], y);
+ PF_MD5_UPD_HTONL(rule, gid.gid[1], y);
+ PF_MD5_UPD(rule, gid.op);
+ PF_MD5_UPD_HTONL(rule, rule_flag, y);
+ PF_MD5_UPD(rule, action);
+ PF_MD5_UPD(rule, direction);
+ PF_MD5_UPD(rule, af);
+ PF_MD5_UPD(rule, quick);
+ PF_MD5_UPD(rule, ifnot);
+ PF_MD5_UPD(rule, match_tag_not);
+ PF_MD5_UPD(rule, natpass);
+ PF_MD5_UPD(rule, keep_state);
+ PF_MD5_UPD(rule, proto);
+ PF_MD5_UPD(rule, type);
+ PF_MD5_UPD(rule, code);
+ PF_MD5_UPD(rule, flags);
+ PF_MD5_UPD(rule, flagset);
+ PF_MD5_UPD(rule, allow_opts);
+ PF_MD5_UPD(rule, rt);
+ PF_MD5_UPD(rule, tos);
+}
+
+static int
+pf_commit_rules(u_int32_t ticket, int rs_num, char *anchor)
+{
+ struct pf_ruleset *rs;
+ struct pf_rule *rule, **old_array;
+ struct pf_rulequeue *old_rules;
+ int error;
+ u_int32_t old_rcount;
+
+ lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+
+ if (rs_num < 0 || rs_num >= PF_RULESET_MAX)
+ return (EINVAL);
+ rs = pf_find_ruleset(anchor);
+ if (rs == NULL || !rs->rules[rs_num].inactive.open ||
+ ticket != rs->rules[rs_num].inactive.ticket)
+ return (EBUSY);
+
+ /* Calculate checksum for the main ruleset */
+ if (rs == &pf_main_ruleset) {
+ error = pf_setup_pfsync_matching(rs);
+ if (error != 0)
+ return (error);
+ }
+
+ /* Swap rules, keep the old. */
+ old_rules = rs->rules[rs_num].active.ptr;
+ old_rcount = rs->rules[rs_num].active.rcount;
+ old_array = rs->rules[rs_num].active.ptr_array;
+
+ rs->rules[rs_num].active.ptr =
+ rs->rules[rs_num].inactive.ptr;
+ rs->rules[rs_num].active.ptr_array =
+ rs->rules[rs_num].inactive.ptr_array;
+ rs->rules[rs_num].active.rcount =
+ rs->rules[rs_num].inactive.rcount;
+ rs->rules[rs_num].inactive.ptr = old_rules;
+ rs->rules[rs_num].inactive.ptr_array = old_array;
+ rs->rules[rs_num].inactive.rcount = old_rcount;
+
+ rs->rules[rs_num].active.ticket =
+ rs->rules[rs_num].inactive.ticket;
+ pf_calc_skip_steps(rs->rules[rs_num].active.ptr);
+
+
+ /* Purge the old rule list. */
+ while ((rule = TAILQ_FIRST(old_rules)) != NULL)
+ pf_rm_rule(old_rules, rule);
+ if (rs->rules[rs_num].inactive.ptr_array)
+ _FREE(rs->rules[rs_num].inactive.ptr_array, M_TEMP);
+ rs->rules[rs_num].inactive.ptr_array = NULL;
+ rs->rules[rs_num].inactive.rcount = 0;
+ rs->rules[rs_num].inactive.open = 0;
+ pf_remove_if_empty_ruleset(rs);
+ return (0);
+}
+
+static void
+pf_state_export(struct pfsync_state *sp, struct pf_state_key *sk,
+ struct pf_state *s)
+{
+ uint64_t secs = pf_time_second();
+ bzero(sp, sizeof (struct pfsync_state));
+
+ /* copy from state key */
+#ifndef NO_APPLE_EXTENSIONS
+ sp->lan.addr = sk->lan.addr;
+ sp->lan.xport = sk->lan.xport;
+ sp->gwy.addr = sk->gwy.addr;
+ sp->gwy.xport = sk->gwy.xport;
+ sp->ext.addr = sk->ext.addr;
+ sp->ext.xport = sk->ext.xport;
+ sp->proto_variant = sk->proto_variant;
+ sp->tag = s->tag;
+#else
+ sp->lan.addr = sk->lan.addr;
+ sp->lan.port = sk->lan.port;
+ sp->gwy.addr = sk->gwy.addr;
+ sp->gwy.port = sk->gwy.port;
+ sp->ext.addr = sk->ext.addr;
+ sp->ext.port = sk->ext.port;
+#endif
+ sp->proto = sk->proto;
+ sp->af = sk->af;
+ sp->direction = sk->direction;
+
+ /* copy from state */
+ memcpy(&sp->id, &s->id, sizeof (sp->id));
+ sp->creatorid = s->creatorid;
+ strlcpy(sp->ifname, s->kif->pfik_name, sizeof (sp->ifname));
+ pf_state_peer_to_pfsync(&s->src, &sp->src);
+ pf_state_peer_to_pfsync(&s->dst, &sp->dst);
+
+ sp->rule = s->rule.ptr->nr;
+ sp->nat_rule = (s->nat_rule.ptr == NULL) ?
+ (unsigned)-1 : s->nat_rule.ptr->nr;
+ sp->anchor = (s->anchor.ptr == NULL) ?
+ (unsigned)-1 : s->anchor.ptr->nr;
+
+ pf_state_counter_to_pfsync(s->bytes[0], sp->bytes[0]);
+ pf_state_counter_to_pfsync(s->bytes[1], sp->bytes[1]);
+ pf_state_counter_to_pfsync(s->packets[0], sp->packets[0]);
+ pf_state_counter_to_pfsync(s->packets[1], sp->packets[1]);
+ sp->creation = secs - s->creation;
+ sp->expire = pf_state_expires(s);
+ sp->log = s->log;
+ sp->allow_opts = s->allow_opts;
+ sp->timeout = s->timeout;
+
+ if (s->src_node)
+ sp->sync_flags |= PFSYNC_FLAG_SRCNODE;
+ if (s->nat_src_node)
+ sp->sync_flags |= PFSYNC_FLAG_NATSRCNODE;
+
+ if (sp->expire > secs)
+ sp->expire -= secs;
+ else
+ sp->expire = 0;
+
+}
+
+static void
+pf_state_import(struct pfsync_state *sp, struct pf_state_key *sk,
+ struct pf_state *s)
+{
+ /* copy to state key */
+#ifndef NO_APPLE_EXTENSIONS
+ sk->lan.addr = sp->lan.addr;
+ sk->lan.xport = sp->lan.xport;
+ sk->gwy.addr = sp->gwy.addr;
+ sk->gwy.xport = sp->gwy.xport;
+ sk->ext.addr = sp->ext.addr;
+ sk->ext.xport = sp->ext.xport;
+ sk->proto_variant = sp->proto_variant;
+ s->tag = sp->tag;
+#else
+ sk->lan.addr = sp->lan.addr;
+ sk->lan.port = sp->lan.port;
+ sk->gwy.addr = sp->gwy.addr;
+ sk->gwy.port = sp->gwy.port;
+ sk->ext.addr = sp->ext.addr;
+ sk->ext.port = sp->ext.port;
+#endif
+ sk->proto = sp->proto;
+ sk->af = sp->af;
+ sk->direction = sp->direction;
+
+ /* copy to state */
+ memcpy(&s->id, &sp->id, sizeof (sp->id));
+ s->creatorid = sp->creatorid;
+ pf_state_peer_from_pfsync(&sp->src, &s->src);
+ pf_state_peer_from_pfsync(&sp->dst, &s->dst);
+
+ s->rule.ptr = &pf_default_rule;
+ s->nat_rule.ptr = NULL;
+ s->anchor.ptr = NULL;
+ s->rt_kif = NULL;
+ s->creation = pf_time_second();
+ s->expire = pf_time_second();
+ if (sp->expire > 0)
+ s->expire -= pf_default_rule.timeout[sp->timeout] - sp->expire;
+ s->pfsync_time = 0;
+ s->packets[0] = s->packets[1] = 0;
+ s->bytes[0] = s->bytes[1] = 0;
+}
+
+static int
+pf_setup_pfsync_matching(struct pf_ruleset *rs)
+{
+ MD5_CTX ctx;
+ struct pf_rule *rule;
+ int rs_cnt;
+ u_int8_t digest[PF_MD5_DIGEST_LENGTH];
+
+ MD5Init(&ctx);
+ for (rs_cnt = 0; rs_cnt < PF_RULESET_MAX; rs_cnt++) {
+ /* XXX PF_RULESET_SCRUB as well? */
+ if (rs_cnt == PF_RULESET_SCRUB)
+ continue;
+
+ if (rs->rules[rs_cnt].inactive.ptr_array)
+ _FREE(rs->rules[rs_cnt].inactive.ptr_array, M_TEMP);
+ rs->rules[rs_cnt].inactive.ptr_array = NULL;
+
+ if (rs->rules[rs_cnt].inactive.rcount) {
+ rs->rules[rs_cnt].inactive.ptr_array =
+ _MALLOC(sizeof (caddr_t) *
+ rs->rules[rs_cnt].inactive.rcount,
+ M_TEMP, M_WAITOK);
+
+ if (!rs->rules[rs_cnt].inactive.ptr_array)
+ return (ENOMEM);
+ }
+
+ TAILQ_FOREACH(rule, rs->rules[rs_cnt].inactive.ptr,
+ entries) {
+ pf_hash_rule(&ctx, rule);
+ (rs->rules[rs_cnt].inactive.ptr_array)[rule->nr] = rule;
+ }
+ }
+
+ MD5Final(digest, &ctx);
+ memcpy(pf_status.pf_chksum, digest, sizeof (pf_status.pf_chksum));
+ return (0);
+}
+
+static int
+pfioctl(dev_t dev, u_long cmd, caddr_t addr, int flags, struct proc *p)
+{
+#pragma unused(dev)
+ struct pf_pooladdr *pa = NULL;
+ struct pf_pool *pool = NULL;
+ int error = 0;
+
+ if (kauth_cred_issuser(kauth_cred_get()) == 0)
+ return (EPERM);
+
+ /* XXX keep in sync with switch() below */
+ if (securelevel > 1)
+ switch (cmd) {
+ case DIOCGETRULES:
+ case DIOCGETRULE:
+ case DIOCGETADDRS:
+ case DIOCGETADDR:
+ case DIOCGETSTATE:
+ case DIOCSETSTATUSIF:
+ case DIOCGETSTATUS:
+ case DIOCCLRSTATUS:
+ case DIOCNATLOOK:
+ case DIOCSETDEBUG:
+ case DIOCGETSTATES:
+ case DIOCGETTIMEOUT:
+ case DIOCCLRRULECTRS:
+ case DIOCGETLIMIT:
+ case DIOCGETALTQS:
+ case DIOCGETALTQ:
+ case DIOCGETQSTATS:
+ case DIOCGETRULESETS:
+ case DIOCGETRULESET:
+ case DIOCRGETTABLES:
+ case DIOCRGETTSTATS:
+ case DIOCRCLRTSTATS:
+ case DIOCRCLRADDRS:
+ case DIOCRADDADDRS:
+ case DIOCRDELADDRS:
+ case DIOCRSETADDRS:
+ case DIOCRGETADDRS:
+ case DIOCRGETASTATS:
+ case DIOCRCLRASTATS:
+ case DIOCRTSTADDRS:
+ case DIOCOSFPGET:
+ case DIOCGETSRCNODES:
+ case DIOCCLRSRCNODES:
+ case DIOCIGETIFACES:
+ case DIOCSETIFFLAG:
+ case DIOCCLRIFFLAG:
+ break;
+ case DIOCRCLRTABLES:
+ case DIOCRADDTABLES:
+ case DIOCRDELTABLES:
+ case DIOCRSETTFLAGS:
+ if (((struct pfioc_table *)addr)->pfrio_flags &
+ PFR_FLAG_DUMMY)
+ break; /* dummy operation ok */
+ return (EPERM);
+ default:
+ return (EPERM);
+ }
+
+ if (!(flags & FWRITE))
+ switch (cmd) {
+ case DIOCSTART:
+ case DIOCSTOP:
+ case DIOCGETRULES:
+ case DIOCGETADDRS:
+ case DIOCGETADDR:
+ case DIOCGETSTATE:
+ case DIOCGETSTATUS:
+ case DIOCGETSTATES:
+ case DIOCGETTIMEOUT:
+ case DIOCGETLIMIT:
+ case DIOCGETALTQS:
+ case DIOCGETALTQ:
+ case DIOCGETQSTATS:
+ case DIOCGETRULESETS:
+ case DIOCGETRULESET:
+ case DIOCNATLOOK:
+ case DIOCRGETTABLES:
+ case DIOCRGETTSTATS:
+ case DIOCRGETADDRS:
+ case DIOCRGETASTATS:
+ case DIOCRTSTADDRS:
+ case DIOCOSFPGET:
+ case DIOCGETSRCNODES:
+ case DIOCIGETIFACES:
+ break;
+ case DIOCRCLRTABLES:
+ case DIOCRADDTABLES:
+ case DIOCRDELTABLES:
+ case DIOCRCLRTSTATS:
+ case DIOCRCLRADDRS:
+ case DIOCRADDADDRS:
+ case DIOCRDELADDRS:
+ case DIOCRSETADDRS:
+ case DIOCRSETTFLAGS:
+ if (((struct pfioc_table *)addr)->pfrio_flags &
+ PFR_FLAG_DUMMY) {
+ flags |= FWRITE; /* need write lock for dummy */
+ break; /* dummy operation ok */
+ }
+ return (EACCES);
+ case DIOCGETRULE:
+ if (((struct pfioc_rule *)addr)->action ==
+ PF_GET_CLR_CNTR)
+ return (EACCES);
+ break;
+ default:
+ return (EACCES);
+ }
+
+ if (flags & FWRITE)
+ lck_rw_lock_exclusive(pf_perim_lock);
+ else
+ lck_rw_lock_shared(pf_perim_lock);
+
+ lck_mtx_lock(pf_lock);
+
+ switch (cmd) {
+
+ case DIOCSTART:
+ if (pf_status.running) {
+ error = EEXIST;
+ } else if (pf_purge_thread == NULL) {
+ error = ENOMEM;
+ } else {
+ pf_status.running = 1;
+ pf_status.since = pf_time_second();
+ if (pf_status.stateid == 0) {
+ pf_status.stateid = pf_time_second();
+ pf_status.stateid = pf_status.stateid << 32;
+ }
+ mbuf_growth_aggressive();
+ pf_attach_hooks();
+ wakeup(pf_purge_thread_fn);
+ DPFPRINTF(PF_DEBUG_MISC, ("pf: started\n"));
+ }
+ break;
+
+ case DIOCSTOP:
+ if (!pf_status.running) {
+ error = ENOENT;
+ } else {
+ mbuf_growth_normal();
+ pf_detach_hooks();
+ pf_status.running = 0;
+ pf_status.since = pf_time_second();
+ wakeup(pf_purge_thread_fn);
+ DPFPRINTF(PF_DEBUG_MISC, ("pf: stopped\n"));
+ }
+ break;
+
+ case DIOCADDRULE: {
+ struct pfioc_rule *pr = (struct pfioc_rule *)addr;
+ struct pf_ruleset *ruleset;
+ struct pf_rule *rule, *tail;
+ struct pf_pooladdr *apa;
+ int rs_num;
+
+ pr->anchor[sizeof (pr->anchor) - 1] = 0;
+ ruleset = pf_find_ruleset(pr->anchor);
+ if (ruleset == NULL) {
+ error = EINVAL;
+ break;
+ }
+ rs_num = pf_get_ruleset_number(pr->rule.action);
+ if (rs_num >= PF_RULESET_MAX) {
+ error = EINVAL;
+ break;
+ }
+ if (pr->rule.return_icmp >> 8 > ICMP_MAXTYPE) {
+ error = EINVAL;
+ break;
+ }
+ if (pr->ticket != ruleset->rules[rs_num].inactive.ticket) {
+ error = EBUSY;
+ break;
+ }
+ if (pr->pool_ticket != ticket_pabuf) {
+ error = EBUSY;
+ break;
+ }
+ rule = pool_get(&pf_rule_pl, PR_WAITOK);
+ if (rule == NULL) {
+ error = ENOMEM;
+ break;
+ }
+ bcopy(&pr->rule, rule, sizeof (struct pf_rule));
+ rule->cuid = kauth_cred_getuid(p->p_ucred);
+ rule->cpid = p->p_pid;
+ rule->anchor = NULL;
+ rule->kif = NULL;
+ TAILQ_INIT(&rule->rpool.list);
+ /* initialize refcounting */
+ rule->states = 0;
+ rule->src_nodes = 0;
+ rule->entries.tqe_prev = NULL;
+#if !INET
+ if (rule->af == AF_INET) {
+ pool_put(&pf_rule_pl, rule);
+ error = EAFNOSUPPORT;
+ break;
+ }
+#endif /* INET */
+#if !INET6
+ if (rule->af == AF_INET6) {
+ pool_put(&pf_rule_pl, rule);
+ error = EAFNOSUPPORT;
+ break;
+ }
+#endif /* INET6 */
+ tail = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr,
+ pf_rulequeue);
+ if (tail)
+ rule->nr = tail->nr + 1;
+ else
+ rule->nr = 0;
+ if (rule->ifname[0]) {
+ rule->kif = pfi_kif_get(rule->ifname);
+ if (rule->kif == NULL) {
+ pool_put(&pf_rule_pl, rule);
+ error = EINVAL;
+ break;
+ }
+ pfi_kif_ref(rule->kif, PFI_KIF_REF_RULE);
+ }
+
+#if ALTQ
+ /* set queue IDs */
+ if (rule->qname[0] != 0) {
+ if ((rule->qid = pf_qname2qid(rule->qname)) == 0)
+ error = EBUSY;
+ else if (rule->pqname[0] != 0) {
+ if ((rule->pqid =
+ pf_qname2qid(rule->pqname)) == 0)
+ error = EBUSY;
+ } else
+ rule->pqid = rule->qid;
+ }
+#endif /* ALTQ */
+ if (rule->tagname[0])
+ if ((rule->tag = pf_tagname2tag(rule->tagname)) == 0)
+ error = EBUSY;
+ if (rule->match_tagname[0])
+ if ((rule->match_tag =
+ pf_tagname2tag(rule->match_tagname)) == 0)
+ error = EBUSY;
+ if (rule->rt && !rule->direction)
+ error = EINVAL;
+#if PFLOG
+ if (!rule->log)
+ rule->logif = 0;
+ if (rule->logif >= PFLOGIFS_MAX)
+ error = EINVAL;
+#endif /* PFLOG */
+ if (pf_rtlabel_add(&rule->src.addr) ||
+ pf_rtlabel_add(&rule->dst.addr))
+ error = EBUSY;
+ if (pfi_dynaddr_setup(&rule->src.addr, rule->af))
+ error = EINVAL;
+ if (pfi_dynaddr_setup(&rule->dst.addr, rule->af))
+ error = EINVAL;
+ if (pf_tbladdr_setup(ruleset, &rule->src.addr))
+ error = EINVAL;
+ if (pf_tbladdr_setup(ruleset, &rule->dst.addr))
+ error = EINVAL;
+ if (pf_anchor_setup(rule, ruleset, pr->anchor_call))
+ error = EINVAL;
+ TAILQ_FOREACH(apa, &pf_pabuf, entries)
+ if (pf_tbladdr_setup(ruleset, &apa->addr))
+ error = EINVAL;
+
+ if (rule->overload_tblname[0]) {
+ if ((rule->overload_tbl = pfr_attach_table(ruleset,
+ rule->overload_tblname)) == NULL)
+ error = EINVAL;
+ else
+ rule->overload_tbl->pfrkt_flags |=
+ PFR_TFLAG_ACTIVE;
+ }
+
+ pf_mv_pool(&pf_pabuf, &rule->rpool.list);
+ if (((((rule->action == PF_NAT) || (rule->action == PF_RDR) ||
+ (rule->action == PF_BINAT)) && rule->anchor == NULL) ||
+ (rule->rt > PF_FASTROUTE)) &&
+ (TAILQ_FIRST(&rule->rpool.list) == NULL))
+ error = EINVAL;
+
+ if (error) {
+ pf_rm_rule(NULL, rule);
+ break;
+ }
+ rule->rpool.cur = TAILQ_FIRST(&rule->rpool.list);
+ rule->evaluations = rule->packets[0] = rule->packets[1] =
+ rule->bytes[0] = rule->bytes[1] = 0;
+ TAILQ_INSERT_TAIL(ruleset->rules[rs_num].inactive.ptr,
+ rule, entries);
+ ruleset->rules[rs_num].inactive.rcount++;
+ break;
+ }
+
+ case DIOCGETRULES: {
+ struct pfioc_rule *pr = (struct pfioc_rule *)addr;
+ struct pf_ruleset *ruleset;
+ struct pf_rule *tail;
+ int rs_num;
+
+ pr->anchor[sizeof (pr->anchor) - 1] = 0;
+ ruleset = pf_find_ruleset(pr->anchor);
+ if (ruleset == NULL) {
+ error = EINVAL;
+ break;
+ }
+ rs_num = pf_get_ruleset_number(pr->rule.action);
+ if (rs_num >= PF_RULESET_MAX) {
+ error = EINVAL;
+ break;
+ }
+ tail = TAILQ_LAST(ruleset->rules[rs_num].active.ptr,
+ pf_rulequeue);
+ if (tail)
+ pr->nr = tail->nr + 1;
+ else
+ pr->nr = 0;
+ pr->ticket = ruleset->rules[rs_num].active.ticket;
+ break;
+ }
+
+ case DIOCGETRULE: {
+ struct pfioc_rule *pr = (struct pfioc_rule *)addr;
+ struct pf_ruleset *ruleset;
+ struct pf_rule *rule;
+ int rs_num, i;
+
+ pr->anchor[sizeof (pr->anchor) - 1] = 0;
+ ruleset = pf_find_ruleset(pr->anchor);
+ if (ruleset == NULL) {
+ error = EINVAL;
+ break;
+ }
+ rs_num = pf_get_ruleset_number(pr->rule.action);
+ if (rs_num >= PF_RULESET_MAX) {
+ error = EINVAL;
+ break;
+ }
+ if (pr->ticket != ruleset->rules[rs_num].active.ticket) {
+ error = EBUSY;
+ break;
+ }
+ rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr);
+ while ((rule != NULL) && (rule->nr != pr->nr))
+ rule = TAILQ_NEXT(rule, entries);
+ if (rule == NULL) {
+ error = EBUSY;
+ break;
+ }
+ bcopy(rule, &pr->rule, sizeof (struct pf_rule));
+ if (pf_anchor_copyout(ruleset, rule, pr)) {
+ error = EBUSY;
+ break;
+ }
+ pfi_dynaddr_copyout(&pr->rule.src.addr);
+ pfi_dynaddr_copyout(&pr->rule.dst.addr);
+ pf_tbladdr_copyout(&pr->rule.src.addr);
+ pf_tbladdr_copyout(&pr->rule.dst.addr);
+ pf_rtlabel_copyout(&pr->rule.src.addr);
+ pf_rtlabel_copyout(&pr->rule.dst.addr);
+ for (i = 0; i < PF_SKIP_COUNT; ++i)
+ if (rule->skip[i].ptr == NULL)
+ pr->rule.skip[i].nr = -1;
+ else
+ pr->rule.skip[i].nr =
+ rule->skip[i].ptr->nr;
+
+ if (pr->action == PF_GET_CLR_CNTR) {
+ rule->evaluations = 0;
+ rule->packets[0] = rule->packets[1] = 0;
+ rule->bytes[0] = rule->bytes[1] = 0;
+ }
+ break;
+ }
+
+ case DIOCCHANGERULE: {
+ struct pfioc_rule *pcr = (struct pfioc_rule *)addr;
+ struct pf_ruleset *ruleset;
+ struct pf_rule *oldrule = NULL, *newrule = NULL;
+ u_int32_t nr = 0;
+ int rs_num;
+
+ if (!(pcr->action == PF_CHANGE_REMOVE ||
+ pcr->action == PF_CHANGE_GET_TICKET) &&
+ pcr->pool_ticket != ticket_pabuf) {
+ error = EBUSY;
+ break;
+ }
+
+ if (pcr->action < PF_CHANGE_ADD_HEAD ||
+ pcr->action > PF_CHANGE_GET_TICKET) {
+ error = EINVAL;
+ break;
+ }
+ ruleset = pf_find_ruleset(pcr->anchor);
+ if (ruleset == NULL) {
+ error = EINVAL;
+ break;
+ }
+ rs_num = pf_get_ruleset_number(pcr->rule.action);
+ if (rs_num >= PF_RULESET_MAX) {
+ error = EINVAL;
+ break;
+ }
+
+ if (pcr->action == PF_CHANGE_GET_TICKET) {
+ pcr->ticket = ++ruleset->rules[rs_num].active.ticket;
+ break;
+ } else {
+ if (pcr->ticket !=
+ ruleset->rules[rs_num].active.ticket) {
+ error = EINVAL;
+ break;
+ }
+ if (pcr->rule.return_icmp >> 8 > ICMP_MAXTYPE) {
+ error = EINVAL;
+ break;
+ }
+ }
+
+ if (pcr->action != PF_CHANGE_REMOVE) {
+ newrule = pool_get(&pf_rule_pl, PR_WAITOK);
+ if (newrule == NULL) {
+ error = ENOMEM;
+ break;
+ }
+ bcopy(&pcr->rule, newrule, sizeof (struct pf_rule));
+ newrule->cuid = kauth_cred_getuid(p->p_ucred);
+ newrule->cpid = p->p_pid;
+ TAILQ_INIT(&newrule->rpool.list);
+ /* initialize refcounting */
+ newrule->states = 0;
+ newrule->entries.tqe_prev = NULL;
+#if !INET
+ if (newrule->af == AF_INET) {
+ pool_put(&pf_rule_pl, newrule);
+ error = EAFNOSUPPORT;
+ break;
+ }
+#endif /* INET */
+#if !INET6
+ if (newrule->af == AF_INET6) {
+ pool_put(&pf_rule_pl, newrule);
+ error = EAFNOSUPPORT;
+ break;
+ }
+#endif /* INET6 */
+ if (newrule->ifname[0]) {
+ newrule->kif = pfi_kif_get(newrule->ifname);
+ if (newrule->kif == NULL) {
+ pool_put(&pf_rule_pl, newrule);
+ error = EINVAL;
+ break;
+ }
+ pfi_kif_ref(newrule->kif, PFI_KIF_REF_RULE);
+ } else
+ newrule->kif = NULL;
+
+#if ALTQ
+ /* set queue IDs */
+ if (newrule->qname[0] != 0) {
+ if ((newrule->qid =
+ pf_qname2qid(newrule->qname)) == 0)
+ error = EBUSY;
+ else if (newrule->pqname[0] != 0) {
+ if ((newrule->pqid =
+ pf_qname2qid(newrule->pqname)) == 0)
+ error = EBUSY;
+ } else
+ newrule->pqid = newrule->qid;
+ }
+#endif /* ALTQ */
+ if (newrule->tagname[0])
+ if ((newrule->tag =
+ pf_tagname2tag(newrule->tagname)) == 0)
+ error = EBUSY;
+ if (newrule->match_tagname[0])
+ if ((newrule->match_tag = pf_tagname2tag(
+ newrule->match_tagname)) == 0)
+ error = EBUSY;
+ if (newrule->rt && !newrule->direction)
+ error = EINVAL;
+#if PFLOG
+ if (!newrule->log)
+ newrule->logif = 0;
+ if (newrule->logif >= PFLOGIFS_MAX)
+ error = EINVAL;
+#endif /* PFLOG */
+ if (pf_rtlabel_add(&newrule->src.addr) ||
+ pf_rtlabel_add(&newrule->dst.addr))
+ error = EBUSY;
+ if (pfi_dynaddr_setup(&newrule->src.addr, newrule->af))
+ error = EINVAL;
+ if (pfi_dynaddr_setup(&newrule->dst.addr, newrule->af))
+ error = EINVAL;
+ if (pf_tbladdr_setup(ruleset, &newrule->src.addr))
+ error = EINVAL;
+ if (pf_tbladdr_setup(ruleset, &newrule->dst.addr))
+ error = EINVAL;
+ if (pf_anchor_setup(newrule, ruleset, pcr->anchor_call))
+ error = EINVAL;
+ TAILQ_FOREACH(pa, &pf_pabuf, entries)
+ if (pf_tbladdr_setup(ruleset, &pa->addr))
+ error = EINVAL;
+
+ if (newrule->overload_tblname[0]) {
+ if ((newrule->overload_tbl = pfr_attach_table(
+ ruleset, newrule->overload_tblname)) ==
+ NULL)
+ error = EINVAL;
+ else
+ newrule->overload_tbl->pfrkt_flags |=
+ PFR_TFLAG_ACTIVE;
+ }
+
+ pf_mv_pool(&pf_pabuf, &newrule->rpool.list);
+ if (((((newrule->action == PF_NAT) ||
+ (newrule->action == PF_RDR) ||
+ (newrule->action == PF_BINAT) ||
+ (newrule->rt > PF_FASTROUTE)) &&
+ !newrule->anchor)) &&
+ (TAILQ_FIRST(&newrule->rpool.list) == NULL))
+ error = EINVAL;
+
+ if (error) {
+ pf_rm_rule(NULL, newrule);
+ break;
+ }
+ newrule->rpool.cur = TAILQ_FIRST(&newrule->rpool.list);
+ newrule->evaluations = 0;
+ newrule->packets[0] = newrule->packets[1] = 0;
+ newrule->bytes[0] = newrule->bytes[1] = 0;
+ }
+ pf_empty_pool(&pf_pabuf);
+
+ if (pcr->action == PF_CHANGE_ADD_HEAD)
+ oldrule = TAILQ_FIRST(
+ ruleset->rules[rs_num].active.ptr);
+ else if (pcr->action == PF_CHANGE_ADD_TAIL)
+ oldrule = TAILQ_LAST(
+ ruleset->rules[rs_num].active.ptr, pf_rulequeue);
+ else {
+ oldrule = TAILQ_FIRST(
+ ruleset->rules[rs_num].active.ptr);
+ while ((oldrule != NULL) && (oldrule->nr != pcr->nr))
+ oldrule = TAILQ_NEXT(oldrule, entries);
+ if (oldrule == NULL) {
+ if (newrule != NULL)
+ pf_rm_rule(NULL, newrule);
+ error = EINVAL;
+ break;
+ }
+ }
+
+ if (pcr->action == PF_CHANGE_REMOVE) {
+ pf_rm_rule(ruleset->rules[rs_num].active.ptr, oldrule);
+ ruleset->rules[rs_num].active.rcount--;
+ } else {
+ if (oldrule == NULL)
+ TAILQ_INSERT_TAIL(
+ ruleset->rules[rs_num].active.ptr,
+ newrule, entries);
+ else if (pcr->action == PF_CHANGE_ADD_HEAD ||
+ pcr->action == PF_CHANGE_ADD_BEFORE)
+ TAILQ_INSERT_BEFORE(oldrule, newrule, entries);
+ else
+ TAILQ_INSERT_AFTER(
+ ruleset->rules[rs_num].active.ptr,
+ oldrule, newrule, entries);
+ ruleset->rules[rs_num].active.rcount++;
+ }
+
+ nr = 0;
+ TAILQ_FOREACH(oldrule,
+ ruleset->rules[rs_num].active.ptr, entries)
+ oldrule->nr = nr++;
+
+ ruleset->rules[rs_num].active.ticket++;
+
+ pf_calc_skip_steps(ruleset->rules[rs_num].active.ptr);
+ pf_remove_if_empty_ruleset(ruleset);
+
+ break;
+ }
+
+ case DIOCCLRSTATES: {
+ struct pf_state *s, *nexts;
+ struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr;
+ int killed = 0;
+
+ for (s = RB_MIN(pf_state_tree_id, &tree_id); s; s = nexts) {
+ nexts = RB_NEXT(pf_state_tree_id, &tree_id, s);
+
+ if (!psk->psk_ifname[0] || strcmp(psk->psk_ifname,
+ s->kif->pfik_name) == 0) {
+#if NPFSYNC
+ /* don't send out individual delete messages */
+ s->sync_flags = PFSTATE_NOSYNC;
+#endif
+ pf_unlink_state(s);
+ killed++;
+ }
+ }
+ psk->psk_af = killed;
+#if NPFSYNC
+ pfsync_clear_states(pf_status.hostid, psk->psk_ifname);
+#endif
+ break;
+ }
+
+ case DIOCKILLSTATES: {
+ struct pf_state *s, *nexts;
+ struct pf_state_key *sk;
+ struct pf_state_host *src, *dst;
+ struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr;
+ int killed = 0;
+
+ for (s = RB_MIN(pf_state_tree_id, &tree_id); s;
+ s = nexts) {
+ nexts = RB_NEXT(pf_state_tree_id, &tree_id, s);
+ sk = s->state_key;
+
+ if (sk->direction == PF_OUT) {
+ src = &sk->lan;
+ dst = &sk->ext;
+ } else {
+ src = &sk->ext;
+ dst = &sk->lan;
+ }
+ if ((!psk->psk_af || sk->af == psk->psk_af) &&
+ (!psk->psk_proto || psk->psk_proto == sk->proto) &&
+ PF_MATCHA(psk->psk_src.neg,
+ &psk->psk_src.addr.v.a.addr,
+ &psk->psk_src.addr.v.a.mask,
+ &src->addr, sk->af) &&
+ PF_MATCHA(psk->psk_dst.neg,
+ &psk->psk_dst.addr.v.a.addr,
+ &psk->psk_dst.addr.v.a.mask,
+ &dst->addr, sk->af) &&
+#ifndef NO_APPLE_EXTENSIONS
+ (pf_match_xport(psk->psk_proto,
+ psk->psk_proto_variant, &psk->psk_src.xport,
+ &src->xport)) &&
+ (pf_match_xport(psk->psk_proto,
+ psk->psk_proto_variant, &psk->psk_dst.xport,
+ &dst->xport)) &&
+#else
+ (psk->psk_src.port_op == 0 ||
+ pf_match_port(psk->psk_src.port_op,
+ psk->psk_src.port[0], psk->psk_src.port[1],
+ src->port)) &&
+ (psk->psk_dst.port_op == 0 ||
+ pf_match_port(psk->psk_dst.port_op,
+ psk->psk_dst.port[0], psk->psk_dst.port[1],
+ dst->port)) &&
+#endif
+ (!psk->psk_ifname[0] || strcmp(psk->psk_ifname,
+ s->kif->pfik_name) == 0)) {
+#if NPFSYNC
+ /* send immediate delete of state */
+ pfsync_delete_state(s);
+ s->sync_flags |= PFSTATE_NOSYNC;
+#endif
+ pf_unlink_state(s);
+ killed++;
+ }
+ }
+ psk->psk_af = killed;
+ break;
+ }
+
+ case DIOCADDSTATE: {
+ struct pfioc_state *ps = (struct pfioc_state *)addr;
+ struct pfsync_state *sp = &ps->state;
+ struct pf_state *s;
+ struct pf_state_key *sk;
+ struct pfi_kif *kif;
+
+ if (sp->timeout >= PFTM_MAX &&
+ sp->timeout != PFTM_UNTIL_PACKET) {
+ error = EINVAL;
+ break;
+ }
+ s = pool_get(&pf_state_pl, PR_WAITOK);
+ if (s == NULL) {
+ error = ENOMEM;
+ break;
+ }
+ bzero(s, sizeof (struct pf_state));
+ if ((sk = pf_alloc_state_key(s)) == NULL) {
+ pool_put(&pf_state_pl, s);
+ error = ENOMEM;
+ break;
+ }
+ pf_state_import(sp, sk, s);
+ kif = pfi_kif_get(sp->ifname);
+ if (kif == NULL) {
+ pool_put(&pf_state_pl, s);
+ pool_put(&pf_state_key_pl, sk);
+ error = ENOENT;
+ break;
+ }
+#ifndef NO_APPLE_EXTENSIONS
+ TAILQ_INIT(&s->unlink_hooks);
+ s->state_key->app_state = 0;
+#endif
+ if (pf_insert_state(kif, s)) {
+ pfi_kif_unref(kif, PFI_KIF_REF_NONE);
+ pool_put(&pf_state_pl, s);
+ error = EEXIST;
+ break;
+ }
+ pf_default_rule.states++;
+ break;
+ }
+
+ case DIOCGETSTATE: {
+ struct pfioc_state *ps = (struct pfioc_state *)addr;
+ struct pf_state *s;
+ struct pf_state_cmp id_key;
+
+ bcopy(ps->state.id, &id_key.id, sizeof (id_key.id));
+ id_key.creatorid = ps->state.creatorid;
+
+ s = pf_find_state_byid(&id_key);
+ if (s == NULL) {
+ error = ENOENT;
+ break;
+ }
+
+ pf_state_export(&ps->state, s->state_key, s);
+ break;
+ }
+
+ case DIOCGETSTATES: {
+ struct pfioc_states *ps = (struct pfioc_states *)addr;
+ struct pf_state *state;
+ struct pfsync_state *y, *pstore;
+ u_int32_t nr = 0;
+
+ if (ps->ps_len == 0) {
+ nr = pf_status.states;
+ ps->ps_len = sizeof (struct pfsync_state) * nr;
+ break;
+ }
+
+ pstore = _MALLOC(sizeof (*pstore), M_TEMP, M_WAITOK);
+
+ y = ps->ps_states;
+
+ state = TAILQ_FIRST(&state_list);
+ while (state) {
+ if (state->timeout != PFTM_UNLINKED) {
+ if ((nr+1) * sizeof (*y) > (unsigned)ps->ps_len)
+ break;
+
+ pf_state_export(pstore,
+ state->state_key, state);
+ error = copyout(pstore, CAST_USER_ADDR_T(y),
+ sizeof (*y));
+ if (error) {
+ _FREE(pstore, M_TEMP);
+ goto fail;
+ }
+ y++;
+ nr++;
+ }
+ state = TAILQ_NEXT(state, entry_list);
+ }
+
+ ps->ps_len = sizeof (struct pfsync_state) * nr;
+
+ _FREE(pstore, M_TEMP);
+ break;
+ }
+
+ case DIOCGETSTATUS: {
+ struct pf_status *s = (struct pf_status *)addr;
+ bcopy(&pf_status, s, sizeof (struct pf_status));
+ pfi_update_status(s->ifname, s);
+ break;
+ }
+
+ case DIOCSETSTATUSIF: {
+ struct pfioc_if *pi = (struct pfioc_if *)addr;
+
+ if (pi->ifname[0] == 0) {
+ bzero(pf_status.ifname, IFNAMSIZ);
+ break;
+ }
+ strlcpy(pf_status.ifname, pi->ifname, IFNAMSIZ);
+ break;
+ }
+
+ case DIOCCLRSTATUS: {
+ bzero(pf_status.counters, sizeof (pf_status.counters));
+ bzero(pf_status.fcounters, sizeof (pf_status.fcounters));
+ bzero(pf_status.scounters, sizeof (pf_status.scounters));
+ pf_status.since = pf_time_second();
+ if (*pf_status.ifname)
+ pfi_update_status(pf_status.ifname, NULL);
+ break;
+ }
+
+ case DIOCNATLOOK: {
+ struct pfioc_natlook *pnl = (struct pfioc_natlook *)addr;
+ struct pf_state_key *sk;
+ struct pf_state *state;
+ struct pf_state_key_cmp key;
+ int m = 0, direction = pnl->direction;
+
+ key.af = pnl->af;
+ key.proto = pnl->proto;
+
+#ifndef NO_APPLE_EXTENSIONS
+ key.proto_variant = pnl->proto_variant;
+#endif
+
+ if (!pnl->proto ||
+ PF_AZERO(&pnl->saddr, pnl->af) ||
+ PF_AZERO(&pnl->daddr, pnl->af) ||
+ ((pnl->proto == IPPROTO_TCP ||
+ pnl->proto == IPPROTO_UDP) &&
+#ifndef NO_APPLE_EXTENSIONS
+ (!pnl->dxport.port || !pnl->sxport.port)))
+#else
+ (!pnl->dport || !pnl->sport)))
+#endif
+ error = EINVAL;
+ else {
+ /*
+ * userland gives us source and dest of connection,
+ * reverse the lookup so we ask for what happens with
+ * the return traffic, enabling us to find it in the
+ * state tree.
+ */
+ if (direction == PF_IN) {
+ PF_ACPY(&key.ext.addr, &pnl->daddr, pnl->af);
+#ifndef NO_APPLE_EXTENSIONS
+ memcpy(&key.ext.xport, &pnl->dxport,
+ sizeof (key.ext.xport));
+#else
+ key.ext.port = pnl->dport;
+#endif
+ PF_ACPY(&key.gwy.addr, &pnl->saddr, pnl->af);
+#ifndef NO_APPLE_EXTENSIONS
+ memcpy(&key.gwy.xport, &pnl->sxport,
+ sizeof (key.gwy.xport));
+#else
+ key.gwy.port = pnl->sport;
+#endif
+ state = pf_find_state_all(&key, PF_IN, &m);
+ } else {
+ PF_ACPY(&key.lan.addr, &pnl->daddr, pnl->af);
+#ifndef NO_APPLE_EXTENSIONS
+ memcpy(&key.lan.xport, &pnl->dxport,
+ sizeof (key.lan.xport));
+#else
+ key.lan.port = pnl->dport;
+#endif
+ PF_ACPY(&key.ext.addr, &pnl->saddr, pnl->af);
+#ifndef NO_APPLE_EXTENSIONS
+ memcpy(&key.ext.xport, &pnl->sxport,
+ sizeof (key.ext.xport));
+#else
+ key.ext.port = pnl->sport;
+#endif
+ state = pf_find_state_all(&key, PF_OUT, &m);
+ }
+ if (m > 1)
+ error = E2BIG; /* more than one state */
+ else if (state != NULL) {
+ sk = state->state_key;
+ if (direction == PF_IN) {
+ PF_ACPY(&pnl->rsaddr, &sk->lan.addr,
+ sk->af);
+#ifndef NO_APPLE_EXTENSIONS
+ memcpy(&pnl->rsxport, &sk->lan.xport,
+ sizeof (pnl->rsxport));
+#else
+ pnl->rsport = sk->lan.port;
+#endif
+ PF_ACPY(&pnl->rdaddr, &pnl->daddr,
+ pnl->af);
+#ifndef NO_APPLE_EXTENSIONS
+ memcpy(&pnl->rdxport, &pnl->dxport,
+ sizeof (pnl->rdxport));
+#else
+ pnl->rdport = pnl->dport;
+#endif
+ } else {
+ PF_ACPY(&pnl->rdaddr, &sk->gwy.addr,
+ sk->af);
+#ifndef NO_APPLE_EXTENSIONS
+ memcpy(&pnl->rdxport, &sk->gwy.xport,
+ sizeof (pnl->rdxport));
+#else
+ pnl->rdport = sk->gwy.port;
+#endif
+ PF_ACPY(&pnl->rsaddr, &pnl->saddr,
+ pnl->af);
+#ifndef NO_APPLE_EXTENSIONS
+ memcpy(&pnl->rsxport, &pnl->sxport,
+ sizeof (pnl->rsxport));
+#else
+ pnl->rsport = pnl->sport;
+#endif
+ }
+ } else
+ error = ENOENT;
+ }
+ break;
+ }
+
+ case DIOCSETTIMEOUT: {
+ struct pfioc_tm *pt = (struct pfioc_tm *)addr;
+ int old;
+
+ if (pt->timeout < 0 || pt->timeout >= PFTM_MAX ||
+ pt->seconds < 0) {
+ error = EINVAL;
+ goto fail;
+ }
+ old = pf_default_rule.timeout[pt->timeout];
+ if (pt->timeout == PFTM_INTERVAL && pt->seconds == 0)
+ pt->seconds = 1;
+ pf_default_rule.timeout[pt->timeout] = pt->seconds;
+ if (pt->timeout == PFTM_INTERVAL && pt->seconds < old)
+ wakeup(pf_purge_thread_fn);
+ pt->seconds = old;
+ break;
+ }
+
+ case DIOCGETTIMEOUT: {
+ struct pfioc_tm *pt = (struct pfioc_tm *)addr;
+
+ if (pt->timeout < 0 || pt->timeout >= PFTM_MAX) {
+ error = EINVAL;
+ goto fail;
+ }
+ pt->seconds = pf_default_rule.timeout[pt->timeout];
+ break;
+ }
+
+ case DIOCGETLIMIT: {
+ struct pfioc_limit *pl = (struct pfioc_limit *)addr;
+
+ if (pl->index < 0 || pl->index >= PF_LIMIT_MAX) {
+ error = EINVAL;
+ goto fail;
+ }
+ pl->limit = pf_pool_limits[pl->index].limit;
+ break;
+ }
+
+ case DIOCSETLIMIT: {
+ struct pfioc_limit *pl = (struct pfioc_limit *)addr;
+ int old_limit;
+
+ if (pl->index < 0 || pl->index >= PF_LIMIT_MAX ||
+ pf_pool_limits[pl->index].pp == NULL) {
+ error = EINVAL;
+ goto fail;
+ }
+ pool_sethardlimit(pf_pool_limits[pl->index].pp,
+ pl->limit, NULL, 0);
+ old_limit = pf_pool_limits[pl->index].limit;
+ pf_pool_limits[pl->index].limit = pl->limit;
+ pl->limit = old_limit;
+ break;
+ }
+
+ case DIOCSETDEBUG: {
+ u_int32_t *level = (u_int32_t *)addr;
+
+ pf_status.debug = *level;
+ break;
+ }
+
+ case DIOCCLRRULECTRS: {
+ /* obsoleted by DIOCGETRULE with action=PF_GET_CLR_CNTR */
+ struct pf_ruleset *ruleset = &pf_main_ruleset;
+ struct pf_rule *rule;
+
+ TAILQ_FOREACH(rule,
+ ruleset->rules[PF_RULESET_FILTER].active.ptr, entries) {
+ rule->evaluations = 0;
+ rule->packets[0] = rule->packets[1] = 0;
+ rule->bytes[0] = rule->bytes[1] = 0;
+ }
+ break;
+ }
+
+#if ALTQ
+ case DIOCSTARTALTQ: {
+ struct pf_altq *altq;
+
+ /* enable all altq interfaces on active list */
+ TAILQ_FOREACH(altq, pf_altqs_active, entries) {
+ if (altq->qname[0] == 0) {
+ error = pf_enable_altq(altq);
+ if (error != 0)
+ break;
+ }
+ }
+ if (error == 0)
+ pf_altq_running = 1;
+ DPFPRINTF(PF_DEBUG_MISC, ("altq: started\n"));
+ break;
+ }
+
+ case DIOCSTOPALTQ: {
+ struct pf_altq *altq;
+
+ /* disable all altq interfaces on active list */
+ TAILQ_FOREACH(altq, pf_altqs_active, entries) {
+ if (altq->qname[0] == 0) {
+ error = pf_disable_altq(altq);
+ if (error != 0)
+ break;
+ }
+ }
+ if (error == 0)
+ pf_altq_running = 0;
+ DPFPRINTF(PF_DEBUG_MISC, ("altq: stopped\n"));
+ break;
+ }
+
+ case DIOCADDALTQ: {
+ struct pfioc_altq *pa = (struct pfioc_altq *)addr;
+ struct pf_altq *altq, *a;
+
+ if (pa->ticket != ticket_altqs_inactive) {
+ error = EBUSY;
+ break;
+ }
+ altq = pool_get(&pf_altq_pl, PR_WAITOK);
+ if (altq == NULL) {
+ error = ENOMEM;
+ break;
+ }
+ bcopy(&pa->altq, altq, sizeof (struct pf_altq));
+
+ /*
+ * if this is for a queue, find the discipline and
+ * copy the necessary fields
+ */
+ if (altq->qname[0] != 0) {
+ if ((altq->qid = pf_qname2qid(altq->qname)) == 0) {
+ error = EBUSY;
+ pool_put(&pf_altq_pl, altq);
+ break;
+ }
+ altq->altq_disc = NULL;
+ TAILQ_FOREACH(a, pf_altqs_inactive, entries) {
+ if (strncmp(a->ifname, altq->ifname,
+ IFNAMSIZ) == 0 && a->qname[0] == 0) {
+ altq->altq_disc = a->altq_disc;
+ break;
+ }
+ }
+ }
+
+ error = altq_add(altq);
+ if (error) {
+ pool_put(&pf_altq_pl, altq);
+ break;
+ }
+
+ TAILQ_INSERT_TAIL(pf_altqs_inactive, altq, entries);
+ bcopy(altq, &pa->altq, sizeof (struct pf_altq));
+ break;
+ }
+
+ case DIOCGETALTQS: {
+ struct pfioc_altq *pa = (struct pfioc_altq *)addr;
+ struct pf_altq *altq;
+
+ pa->nr = 0;
+ TAILQ_FOREACH(altq, pf_altqs_active, entries)
+ pa->nr++;
+ pa->ticket = ticket_altqs_active;
+ break;
+ }
+
+ case DIOCGETALTQ: {
+ struct pfioc_altq *pa = (struct pfioc_altq *)addr;
+ struct pf_altq *altq;
+ u_int32_t nr;
+
+ if (pa->ticket != ticket_altqs_active) {
+ error = EBUSY;
+ break;
+ }
+ nr = 0;
+ altq = TAILQ_FIRST(pf_altqs_active);
+ while ((altq != NULL) && (nr < pa->nr)) {
+ altq = TAILQ_NEXT(altq, entries);
+ nr++;
+ }
+ if (altq == NULL) {
+ error = EBUSY;
+ break;
+ }
+ bcopy(altq, &pa->altq, sizeof (struct pf_altq));
+ break;
+ }
+
+ case DIOCCHANGEALTQ:
+ /* CHANGEALTQ not supported yet! */
+ error = ENODEV;
+ break;
+
+ case DIOCGETQSTATS: {
+ struct pfioc_qstats *pq = (struct pfioc_qstats *)addr;
+ struct pf_altq *altq;
+ u_int32_t nr;
+ int nbytes;
+
+ if (pq->ticket != ticket_altqs_active) {
+ error = EBUSY;
+ break;
+ }
+ nbytes = pq->nbytes;
+ nr = 0;
+ altq = TAILQ_FIRST(pf_altqs_active);
+ while ((altq != NULL) && (nr < pq->nr)) {
+ altq = TAILQ_NEXT(altq, entries);
+ nr++;
+ }
+ if (altq == NULL) {
+ error = EBUSY;
+ break;
+ }
+ error = altq_getqstats(altq, pq->buf, &nbytes);
+ if (error == 0) {
+ pq->scheduler = altq->scheduler;
+ pq->nbytes = nbytes;
+ }
+ break;
+ }
+#endif /* ALTQ */
+
+ case DIOCBEGINADDRS: {
+ struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr;
+
+ pf_empty_pool(&pf_pabuf);
+ pp->ticket = ++ticket_pabuf;
+ break;
+ }
+
+ case DIOCADDADDR: {
+ struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr;
+
+ if (pp->ticket != ticket_pabuf) {
+ error = EBUSY;
+ break;
+ }
+#if !INET
+ if (pp->af == AF_INET) {
+ error = EAFNOSUPPORT;
+ break;
+ }
+#endif /* INET */
+#if !INET6
+ if (pp->af == AF_INET6) {
+ error = EAFNOSUPPORT;
+ break;
+ }
+#endif /* INET6 */
+ if (pp->addr.addr.type != PF_ADDR_ADDRMASK &&
+ pp->addr.addr.type != PF_ADDR_DYNIFTL &&
+ pp->addr.addr.type != PF_ADDR_TABLE) {
+ error = EINVAL;
+ break;
+ }
+ pa = pool_get(&pf_pooladdr_pl, PR_WAITOK);
+ if (pa == NULL) {
+ error = ENOMEM;
+ break;
+ }
+ bcopy(&pp->addr, pa, sizeof (struct pf_pooladdr));
+ if (pa->ifname[0]) {
+ pa->kif = pfi_kif_get(pa->ifname);
+ if (pa->kif == NULL) {
+ pool_put(&pf_pooladdr_pl, pa);
+ error = EINVAL;
+ break;
+ }
+ pfi_kif_ref(pa->kif, PFI_KIF_REF_RULE);
+ }
+ if (pfi_dynaddr_setup(&pa->addr, pp->af)) {
+ pfi_dynaddr_remove(&pa->addr);
+ pfi_kif_unref(pa->kif, PFI_KIF_REF_RULE);
+ pool_put(&pf_pooladdr_pl, pa);
+ error = EINVAL;
+ break;
+ }
+ TAILQ_INSERT_TAIL(&pf_pabuf, pa, entries);
+ break;
+ }
+
+ case DIOCGETADDRS: {
+ struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr;
+
+ pp->nr = 0;
+ pool = pf_get_pool(pp->anchor, pp->ticket, pp->r_action,
+ pp->r_num, 0, 1, 0);
+ if (pool == NULL) {
+ error = EBUSY;
+ break;
+ }
+ TAILQ_FOREACH(pa, &pool->list, entries)
+ pp->nr++;
+ break;
+ }
+
+ case DIOCGETADDR: {
+ struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr;
+ u_int32_t nr = 0;
+
+ pool = pf_get_pool(pp->anchor, pp->ticket, pp->r_action,
+ pp->r_num, 0, 1, 1);
+ if (pool == NULL) {
+ error = EBUSY;
+ break;
+ }
+ pa = TAILQ_FIRST(&pool->list);
+ while ((pa != NULL) && (nr < pp->nr)) {
+ pa = TAILQ_NEXT(pa, entries);
+ nr++;
+ }
+ if (pa == NULL) {
+ error = EBUSY;
+ break;
+ }
+ bcopy(pa, &pp->addr, sizeof (struct pf_pooladdr));
+ pfi_dynaddr_copyout(&pp->addr.addr);
+ pf_tbladdr_copyout(&pp->addr.addr);
+ pf_rtlabel_copyout(&pp->addr.addr);
+ break;
+ }
+
+ case DIOCCHANGEADDR: {
+ struct pfioc_pooladdr *pca = (struct pfioc_pooladdr *)addr;
+ struct pf_pooladdr *oldpa = NULL, *newpa = NULL;
+ struct pf_ruleset *ruleset;
+
+ if (pca->action < PF_CHANGE_ADD_HEAD ||
+ pca->action > PF_CHANGE_REMOVE) {
+ error = EINVAL;
+ break;
+ }
+ if (pca->addr.addr.type != PF_ADDR_ADDRMASK &&
+ pca->addr.addr.type != PF_ADDR_DYNIFTL &&
+ pca->addr.addr.type != PF_ADDR_TABLE) {
+ error = EINVAL;
+ break;
+ }
+
+ ruleset = pf_find_ruleset(pca->anchor);
+ if (ruleset == NULL) {
+ error = EBUSY;
+ break;
+ }
+ pool = pf_get_pool(pca->anchor, pca->ticket, pca->r_action,
+ pca->r_num, pca->r_last, 1, 1);
+ if (pool == NULL) {
+ error = EBUSY;
+ break;
+ }
+ if (pca->action != PF_CHANGE_REMOVE) {
+ newpa = pool_get(&pf_pooladdr_pl, PR_WAITOK);
+ if (newpa == NULL) {
+ error = ENOMEM;
+ break;
+ }
+ bcopy(&pca->addr, newpa, sizeof (struct pf_pooladdr));
+#if !INET
+ if (pca->af == AF_INET) {
+ pool_put(&pf_pooladdr_pl, newpa);
+ error = EAFNOSUPPORT;
+ break;
+ }
+#endif /* INET */
+#if !INET6
+ if (pca->af == AF_INET6) {
+ pool_put(&pf_pooladdr_pl, newpa);
+ error = EAFNOSUPPORT;
+ break;
+ }
+#endif /* INET6 */
+ if (newpa->ifname[0]) {
+ newpa->kif = pfi_kif_get(newpa->ifname);
+ if (newpa->kif == NULL) {
+ pool_put(&pf_pooladdr_pl, newpa);
+ error = EINVAL;
+ break;
+ }
+ pfi_kif_ref(newpa->kif, PFI_KIF_REF_RULE);
+ } else
+ newpa->kif = NULL;
+ if (pfi_dynaddr_setup(&newpa->addr, pca->af) ||
+ pf_tbladdr_setup(ruleset, &newpa->addr)) {
+ pfi_dynaddr_remove(&newpa->addr);
+ pfi_kif_unref(newpa->kif, PFI_KIF_REF_RULE);
+ pool_put(&pf_pooladdr_pl, newpa);
+ error = EINVAL;
+ break;
+ }
+ }
+
+ if (pca->action == PF_CHANGE_ADD_HEAD)
+ oldpa = TAILQ_FIRST(&pool->list);
+ else if (pca->action == PF_CHANGE_ADD_TAIL)
+ oldpa = TAILQ_LAST(&pool->list, pf_palist);
+ else {
+ int i = 0;
+
+ oldpa = TAILQ_FIRST(&pool->list);
+ while ((oldpa != NULL) && (i < (int)pca->nr)) {
+ oldpa = TAILQ_NEXT(oldpa, entries);
+ i++;
+ }
+ if (oldpa == NULL) {
+ error = EINVAL;
+ break;
+ }
+ }
+
+ if (pca->action == PF_CHANGE_REMOVE) {
+ TAILQ_REMOVE(&pool->list, oldpa, entries);
+ pfi_dynaddr_remove(&oldpa->addr);
+ pf_tbladdr_remove(&oldpa->addr);
+ pfi_kif_unref(oldpa->kif, PFI_KIF_REF_RULE);
+ pool_put(&pf_pooladdr_pl, oldpa);
+ } else {
+ if (oldpa == NULL)
+ TAILQ_INSERT_TAIL(&pool->list, newpa, entries);
+ else if (pca->action == PF_CHANGE_ADD_HEAD ||
+ pca->action == PF_CHANGE_ADD_BEFORE)
+ TAILQ_INSERT_BEFORE(oldpa, newpa, entries);
+ else
+ TAILQ_INSERT_AFTER(&pool->list, oldpa,
+ newpa, entries);
+ }
+
+ pool->cur = TAILQ_FIRST(&pool->list);
+ PF_ACPY(&pool->counter, &pool->cur->addr.v.a.addr,
+ pca->af);
+ break;
+ }
+
+ case DIOCGETRULESETS: {
+ struct pfioc_ruleset *pr = (struct pfioc_ruleset *)addr;
+ struct pf_ruleset *ruleset;
+ struct pf_anchor *anchor;
+
+ pr->path[sizeof (pr->path) - 1] = 0;
+ if ((ruleset = pf_find_ruleset(pr->path)) == NULL) {
+ error = EINVAL;
+ break;
+ }
+ pr->nr = 0;
+ if (ruleset->anchor == NULL) {
+ /* XXX kludge for pf_main_ruleset */
+ RB_FOREACH(anchor, pf_anchor_global, &pf_anchors)
+ if (anchor->parent == NULL)
+ pr->nr++;
+ } else {
+ RB_FOREACH(anchor, pf_anchor_node,
+ &ruleset->anchor->children)
+ pr->nr++;
+ }
+ break;
+ }
+
+ case DIOCGETRULESET: {
+ struct pfioc_ruleset *pr = (struct pfioc_ruleset *)addr;
+ struct pf_ruleset *ruleset;
+ struct pf_anchor *anchor;
+ u_int32_t nr = 0;
+
+ pr->path[sizeof (pr->path) - 1] = 0;
+ if ((ruleset = pf_find_ruleset(pr->path)) == NULL) {
+ error = EINVAL;
+ break;
+ }
+ pr->name[0] = 0;
+ if (ruleset->anchor == NULL) {
+ /* XXX kludge for pf_main_ruleset */
+ RB_FOREACH(anchor, pf_anchor_global, &pf_anchors)
+ if (anchor->parent == NULL && nr++ == pr->nr) {
+ strlcpy(pr->name, anchor->name,
+ sizeof (pr->name));
+ break;
+ }
+ } else {
+ RB_FOREACH(anchor, pf_anchor_node,
+ &ruleset->anchor->children)
+ if (nr++ == pr->nr) {
+ strlcpy(pr->name, anchor->name,
+ sizeof (pr->name));
+ break;
+ }
+ }
+ if (!pr->name[0])
+ error = EBUSY;
+ break;
+ }
+
+ case DIOCRCLRTABLES: {
+ struct pfioc_table *io = (struct pfioc_table *)addr;
+
+ if (io->pfrio_esize != 0) {
+ error = ENODEV;
+ break;
+ }
+ error = pfr_clr_tables(&io->pfrio_table, &io->pfrio_ndel,
+ io->pfrio_flags | PFR_FLAG_USERIOCTL);
+ break;
+ }
+
+ case DIOCRADDTABLES: {
+ struct pfioc_table *io = (struct pfioc_table *)addr;
+
+ if (io->pfrio_esize != sizeof (struct pfr_table)) {
+ error = ENODEV;
+ break;
+ }
+ error = pfr_add_tables(io->pfrio_buffer, io->pfrio_size,
+ &io->pfrio_nadd, io->pfrio_flags | PFR_FLAG_USERIOCTL);
+ break;
+ }
+
+ case DIOCRDELTABLES: {
+ struct pfioc_table *io = (struct pfioc_table *)addr;
+
+ if (io->pfrio_esize != sizeof (struct pfr_table)) {
+ error = ENODEV;
+ break;
+ }
+ error = pfr_del_tables(io->pfrio_buffer, io->pfrio_size,
+ &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL);
+ break;
+ }
+
+ case DIOCRGETTABLES: {
+ struct pfioc_table *io = (struct pfioc_table *)addr;
+
+ if (io->pfrio_esize != sizeof (struct pfr_table)) {
+ error = ENODEV;
+ break;
+ }
+ error = pfr_get_tables(&io->pfrio_table, io->pfrio_buffer,
+ &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
+ break;
+ }
+
+ case DIOCRGETTSTATS: {
+ struct pfioc_table *io = (struct pfioc_table *)addr;
+
+ if (io->pfrio_esize != sizeof (struct pfr_tstats)) {
+ error = ENODEV;
+ break;
+ }
+ error = pfr_get_tstats(&io->pfrio_table, io->pfrio_buffer,
+ &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
+ break;
+ }
+
+ case DIOCRCLRTSTATS: {
+ struct pfioc_table *io = (struct pfioc_table *)addr;
+
+ if (io->pfrio_esize != sizeof (struct pfr_table)) {
+ error = ENODEV;
+ break;
+ }
+ error = pfr_clr_tstats(io->pfrio_buffer, io->pfrio_size,
+ &io->pfrio_nzero, io->pfrio_flags | PFR_FLAG_USERIOCTL);
+ break;
+ }
+
+ case DIOCRSETTFLAGS: {
+ struct pfioc_table *io = (struct pfioc_table *)addr;
+
+ if (io->pfrio_esize != sizeof (struct pfr_table)) {
+ error = ENODEV;
+ break;
+ }
+ error = pfr_set_tflags(io->pfrio_buffer, io->pfrio_size,
+ io->pfrio_setflag, io->pfrio_clrflag, &io->pfrio_nchange,
+ &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL);
+ break;
+ }
+
+ case DIOCRCLRADDRS: {
+ struct pfioc_table *io = (struct pfioc_table *)addr;
+
+ if (io->pfrio_esize != 0) {
+ error = ENODEV;
+ break;
+ }
+ error = pfr_clr_addrs(&io->pfrio_table, &io->pfrio_ndel,
+ io->pfrio_flags | PFR_FLAG_USERIOCTL);
+ break;
+ }
+
+ case DIOCRADDADDRS: {
+ struct pfioc_table *io = (struct pfioc_table *)addr;
+
+ if (io->pfrio_esize != sizeof (struct pfr_addr)) {
+ error = ENODEV;
+ break;
+ }
+ error = pfr_add_addrs(&io->pfrio_table, io->pfrio_buffer,
+ io->pfrio_size, &io->pfrio_nadd, io->pfrio_flags |
+ PFR_FLAG_USERIOCTL);
+ break;
+ }
+
+ case DIOCRDELADDRS: {
+ struct pfioc_table *io = (struct pfioc_table *)addr;
+
+ if (io->pfrio_esize != sizeof (struct pfr_addr)) {
+ error = ENODEV;
+ break;
+ }
+ error = pfr_del_addrs(&io->pfrio_table, io->pfrio_buffer,
+ io->pfrio_size, &io->pfrio_ndel, io->pfrio_flags |
+ PFR_FLAG_USERIOCTL);
+ break;
+ }
+
+ case DIOCRSETADDRS: {
+ struct pfioc_table *io = (struct pfioc_table *)addr;
+
+ if (io->pfrio_esize != sizeof (struct pfr_addr)) {
+ error = ENODEV;
+ break;
+ }
+ error = pfr_set_addrs(&io->pfrio_table, io->pfrio_buffer,
+ io->pfrio_size, &io->pfrio_size2, &io->pfrio_nadd,
+ &io->pfrio_ndel, &io->pfrio_nchange, io->pfrio_flags |
+ PFR_FLAG_USERIOCTL, 0);
+ break;
+ }
+
+ case DIOCRGETADDRS: {
+ struct pfioc_table *io = (struct pfioc_table *)addr;
+
+ if (io->pfrio_esize != sizeof (struct pfr_addr)) {
+ error = ENODEV;
+ break;
+ }
+ error = pfr_get_addrs(&io->pfrio_table, io->pfrio_buffer,
+ &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
+ break;
+ }
+
+ case DIOCRGETASTATS: {
+ struct pfioc_table *io = (struct pfioc_table *)addr;
+
+ if (io->pfrio_esize != sizeof (struct pfr_astats)) {
+ error = ENODEV;
+ break;
+ }
+ error = pfr_get_astats(&io->pfrio_table, io->pfrio_buffer,
+ &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
+ break;
+ }
+
+ case DIOCRCLRASTATS: {
+ struct pfioc_table *io = (struct pfioc_table *)addr;
+
+ if (io->pfrio_esize != sizeof (struct pfr_addr)) {
+ error = ENODEV;
+ break;
+ }
+ error = pfr_clr_astats(&io->pfrio_table, io->pfrio_buffer,
+ io->pfrio_size, &io->pfrio_nzero, io->pfrio_flags |
+ PFR_FLAG_USERIOCTL);
+ break;
+ }
+
+ case DIOCRTSTADDRS: {
+ struct pfioc_table *io = (struct pfioc_table *)addr;
+
+ if (io->pfrio_esize != sizeof (struct pfr_addr)) {
+ error = ENODEV;
+ break;
+ }
+ error = pfr_tst_addrs(&io->pfrio_table, io->pfrio_buffer,
+ io->pfrio_size, &io->pfrio_nmatch, io->pfrio_flags |
+ PFR_FLAG_USERIOCTL);
+ break;
+ }
+
+ case DIOCRINADEFINE: {
+ struct pfioc_table *io = (struct pfioc_table *)addr;
+
+ if (io->pfrio_esize != sizeof (struct pfr_addr)) {
+ error = ENODEV;
+ break;
+ }
+ error = pfr_ina_define(&io->pfrio_table, io->pfrio_buffer,
+ io->pfrio_size, &io->pfrio_nadd, &io->pfrio_naddr,
+ io->pfrio_ticket, io->pfrio_flags | PFR_FLAG_USERIOCTL);
+ break;
+ }
+
+ case DIOCOSFPADD: {
+ struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr;
+ error = pf_osfp_add(io);
+ break;
+ }
+
+ case DIOCOSFPGET: {
+ struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr;
+ error = pf_osfp_get(io);
+ break;
+ }
+
+ case DIOCXBEGIN: {
+ struct pfioc_trans *io = (struct pfioc_trans *)addr;
+ struct pfioc_trans_e *ioe;
+ struct pfr_table *table;
+ int i;
+
+ if (io->esize != sizeof (*ioe)) {
+ error = ENODEV;
+ goto fail;
+ }
+ ioe = _MALLOC(sizeof (*ioe), M_TEMP, M_WAITOK);
+ table = _MALLOC(sizeof (*table), M_TEMP, M_WAITOK);
+ for (i = 0; i < io->size; i++) {
+ if (copyin(CAST_USER_ADDR_T(io->array+i), ioe,
+ sizeof (*ioe))) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ error = EFAULT;
+ goto fail;
+ }
+ switch (ioe->rs_num) {
+ case PF_RULESET_ALTQ:
+#if ALTQ
+ if (ioe->anchor[0]) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ error = EINVAL;
+ goto fail;
+ }
+ if ((error = pf_begin_altq(&ioe->ticket))) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ goto fail;
+ }
+#endif /* ALTQ */
+ break;
+ case PF_RULESET_TABLE:
+ bzero(table, sizeof (*table));
+ strlcpy(table->pfrt_anchor, ioe->anchor,
+ sizeof (table->pfrt_anchor));
+ if ((error = pfr_ina_begin(table,
+ &ioe->ticket, NULL, 0))) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ goto fail;
+ }
+ break;
+ default:
+ if ((error = pf_begin_rules(&ioe->ticket,
+ ioe->rs_num, ioe->anchor))) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ goto fail;
+ }
+ break;
+ }
+ if (copyout(ioe, CAST_USER_ADDR_T(io->array+i),
+ sizeof (io->array[i]))) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ error = EFAULT;
+ goto fail;
+ }
+ }
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ break;
+ }
+
+ case DIOCXROLLBACK: {
+ struct pfioc_trans *io = (struct pfioc_trans *)addr;
+ struct pfioc_trans_e *ioe;
+ struct pfr_table *table;
+ int i;
+
+ if (io->esize != sizeof (*ioe)) {
+ error = ENODEV;
+ goto fail;
+ }
+ ioe = _MALLOC(sizeof (*ioe), M_TEMP, M_WAITOK);
+ table = _MALLOC(sizeof (*table), M_TEMP, M_WAITOK);
+ for (i = 0; i < io->size; i++) {
+ if (copyin(CAST_USER_ADDR_T(io->array+i), ioe,
+ sizeof (*ioe))) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ error = EFAULT;
+ goto fail;
+ }
+ switch (ioe->rs_num) {
+ case PF_RULESET_ALTQ:
+#if ALTQ
+ if (ioe->anchor[0]) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ error = EINVAL;
+ goto fail;
+ }
+ if ((error = pf_rollback_altq(ioe->ticket))) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ goto fail; /* really bad */
+ }
+#endif /* ALTQ */
+ break;
+ case PF_RULESET_TABLE:
+ bzero(table, sizeof (*table));
+ strlcpy(table->pfrt_anchor, ioe->anchor,
+ sizeof (table->pfrt_anchor));
+ if ((error = pfr_ina_rollback(table,
+ ioe->ticket, NULL, 0))) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ goto fail; /* really bad */
+ }
+ break;
+ default:
+ if ((error = pf_rollback_rules(ioe->ticket,
+ ioe->rs_num, ioe->anchor))) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ goto fail; /* really bad */
+ }
+ break;
+ }
+ }
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ break;
+ }
+
+ case DIOCXCOMMIT: {
+ struct pfioc_trans *io = (struct pfioc_trans *)addr;
+ struct pfioc_trans_e *ioe;
+ struct pfr_table *table;
+ struct pf_ruleset *rs;
+ int i;
+
+ if (io->esize != sizeof (*ioe)) {
+ error = ENODEV;
+ goto fail;
+ }
+ ioe = _MALLOC(sizeof (*ioe), M_TEMP, M_WAITOK);
+ table = _MALLOC(sizeof (*table), M_TEMP, M_WAITOK);
+ /* first makes sure everything will succeed */
+ for (i = 0; i < io->size; i++) {
+ if (copyin(CAST_USER_ADDR_T(io->array+i), ioe,
+ sizeof (*ioe))) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ error = EFAULT;
+ goto fail;
+ }
+ switch (ioe->rs_num) {
+ case PF_RULESET_ALTQ:
+#if ALTQ
+ if (ioe->anchor[0]) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ error = EINVAL;
+ goto fail;
+ }
+ if (!altqs_inactive_open || ioe->ticket !=
+ ticket_altqs_inactive) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ error = EBUSY;
+ goto fail;
+ }
+#endif /* ALTQ */
+ break;
+ case PF_RULESET_TABLE:
+ rs = pf_find_ruleset(ioe->anchor);
+ if (rs == NULL || !rs->topen || ioe->ticket !=
+ rs->tticket) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ error = EBUSY;
+ goto fail;
+ }
+ break;
+ default:
+ if (ioe->rs_num < 0 || ioe->rs_num >=
+ PF_RULESET_MAX) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ error = EINVAL;
+ goto fail;
+ }
+ rs = pf_find_ruleset(ioe->anchor);
+ if (rs == NULL ||
+ !rs->rules[ioe->rs_num].inactive.open ||
+ rs->rules[ioe->rs_num].inactive.ticket !=
+ ioe->ticket) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ error = EBUSY;
+ goto fail;
+ }
+ break;
+ }
+ }
+ /* now do the commit - no errors should happen here */
+ for (i = 0; i < io->size; i++) {
+ if (copyin(CAST_USER_ADDR_T(io->array+i), ioe,
+ sizeof (*ioe))) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ error = EFAULT;
+ goto fail;
+ }
+ switch (ioe->rs_num) {
+ case PF_RULESET_ALTQ:
+#if ALTQ
+ if ((error = pf_commit_altq(ioe->ticket))) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ goto fail; /* really bad */
+ }
+#endif /* ALTQ */
+ break;
+ case PF_RULESET_TABLE:
+ bzero(table, sizeof (*table));
+ strlcpy(table->pfrt_anchor, ioe->anchor,
+ sizeof (table->pfrt_anchor));
+ if ((error = pfr_ina_commit(table, ioe->ticket,
+ NULL, NULL, 0))) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ goto fail; /* really bad */
+ }
+ break;
+ default:
+ if ((error = pf_commit_rules(ioe->ticket,
+ ioe->rs_num, ioe->anchor))) {
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ goto fail; /* really bad */
+ }
+ break;
+ }
+ }
+ _FREE(table, M_TEMP);
+ _FREE(ioe, M_TEMP);
+ break;
+ }
+
+ case DIOCGETSRCNODES: {
+ struct pfioc_src_nodes *psn = (struct pfioc_src_nodes *)addr;
+ struct pf_src_node *n, *sn, *pstore;
+ u_int32_t nr = 0;
+ int space = psn->psn_len;
+
+ if (space == 0) {
+ RB_FOREACH(n, pf_src_tree, &tree_src_tracking)
+ nr++;
+ psn->psn_len = sizeof (struct pf_src_node) * nr;
+ break;
+ }
+
+ pstore = _MALLOC(sizeof (*pstore), M_TEMP, M_WAITOK);
+
+ sn = psn->psn_src_nodes;
+ RB_FOREACH(n, pf_src_tree, &tree_src_tracking) {
+ uint64_t secs = pf_time_second(), diff;
+
+ if ((nr + 1) * sizeof (*sn) > (unsigned)psn->psn_len)
+ break;
+
+ bcopy(n, pstore, sizeof (*pstore));
+ if (n->rule.ptr != NULL)
+ pstore->rule.nr = n->rule.ptr->nr;
+ pstore->creation = secs - pstore->creation;
+ if (pstore->expire > secs)
+ pstore->expire -= secs;
+ else
+ pstore->expire = 0;
+
+ /* adjust the connection rate estimate */
+ diff = secs - n->conn_rate.last;
+ if (diff >= n->conn_rate.seconds)
+ pstore->conn_rate.count = 0;
+ else
+ pstore->conn_rate.count -=
+ n->conn_rate.count * diff /
+ n->conn_rate.seconds;
+
+ error = copyout(pstore, CAST_USER_ADDR_T(sn),
+ sizeof (*sn));
+ if (error) {
+ _FREE(pstore, M_TEMP);
+ goto fail;
+ }
+ sn++;
+ nr++;
+ }
+ psn->psn_len = sizeof (struct pf_src_node) * nr;
+
+ _FREE(pstore, M_TEMP);
+ break;
+ }
+
+ case DIOCCLRSRCNODES: {
+ struct pf_src_node *n;
+ struct pf_state *state;
+
+ RB_FOREACH(state, pf_state_tree_id, &tree_id) {
+ state->src_node = NULL;
+ state->nat_src_node = NULL;
+ }
+ RB_FOREACH(n, pf_src_tree, &tree_src_tracking) {
+ n->expire = 1;
+ n->states = 0;
+ }
+ pf_purge_expired_src_nodes();
+ pf_status.src_nodes = 0;
+ break;
+ }
+
+ case DIOCKILLSRCNODES: {
+ struct pf_src_node *sn;
+ struct pf_state *s;
+ struct pfioc_src_node_kill *psnk =
+ (struct pfioc_src_node_kill *)addr;
+ int killed = 0;
+
+ RB_FOREACH(sn, pf_src_tree, &tree_src_tracking) {
+ if (PF_MATCHA(psnk->psnk_src.neg,
+ &psnk->psnk_src.addr.v.a.addr,
+ &psnk->psnk_src.addr.v.a.mask,
+ &sn->addr, sn->af) &&
+ PF_MATCHA(psnk->psnk_dst.neg,
+ &psnk->psnk_dst.addr.v.a.addr,
+ &psnk->psnk_dst.addr.v.a.mask,
+ &sn->raddr, sn->af)) {
+ /* Handle state to src_node linkage */
+ if (sn->states != 0) {
+ RB_FOREACH(s, pf_state_tree_id,
+ &tree_id) {
+ if (s->src_node == sn)
+ s->src_node = NULL;
+ if (s->nat_src_node == sn)
+ s->nat_src_node = NULL;
+ }
+ sn->states = 0;
+ }
+ sn->expire = 1;
+ killed++;
+ }
+ }
+
+ if (killed > 0)
+ pf_purge_expired_src_nodes();
+
+ psnk->psnk_af = killed;
+ break;
+ }
+
+ case DIOCSETHOSTID: {
+ u_int32_t *hid = (u_int32_t *)addr;
+
+ if (*hid == 0)
+ pf_status.hostid = random();
+ else
+ pf_status.hostid = *hid;
+ break;
+ }
+
+ case DIOCOSFPFLUSH:
+ pf_osfp_flush();
+ break;
+
+ case DIOCIGETIFACES: {
+ struct pfioc_iface *io = (struct pfioc_iface *)addr;
+
+ if (io->pfiio_esize != sizeof (struct pfi_kif)) {
+ error = ENODEV;
+ break;
+ }
+ error = pfi_get_ifaces(io->pfiio_name, io->pfiio_buffer,
+ &io->pfiio_size);
+ break;
+ }
+
+ case DIOCSETIFFLAG: {
+ struct pfioc_iface *io = (struct pfioc_iface *)addr;
+
+ error = pfi_set_flags(io->pfiio_name, io->pfiio_flags);
+ break;
+ }
+
+ case DIOCCLRIFFLAG: {
+ struct pfioc_iface *io = (struct pfioc_iface *)addr;
+
+ error = pfi_clear_flags(io->pfiio_name, io->pfiio_flags);
+ break;
+ }
+
+ default:
+ error = ENODEV;
+ break;
+ }
+fail:
+ lck_mtx_unlock(pf_lock);
+ lck_rw_done(pf_perim_lock);
+
+ return (error);
+}
+
+int
+pf_af_hook(struct ifnet *ifp, struct mbuf **mppn, struct mbuf **mp,
+ unsigned int af, int input)
+{
+ int error = 0, reentry;
+ struct thread *curthread = current_thread();
+ struct mbuf *nextpkt;
+
+ reentry = (ifp->if_pf_curthread == curthread);
+ if (!reentry) {
+ lck_rw_lock_shared(pf_perim_lock);
+ if (!pf_hooks_attached)
+ goto done;
+
+ lck_mtx_lock(pf_lock);
+ ifp->if_pf_curthread = curthread;
+ }
+
+ if (mppn != NULL && *mppn != NULL)
+ VERIFY(*mppn == *mp);
+ if ((nextpkt = (*mp)->m_nextpkt) != NULL)
+ (*mp)->m_nextpkt = NULL;
+
+ switch (af) {
+#if INET
+ case AF_INET: {
+ error = pf_inet_hook(ifp, mp, input);
+ break;
+ }
+#endif /* INET */
+#if INET6
+ case AF_INET6:
+ error = pf_inet6_hook(ifp, mp, input);
+ break;
+#endif /* INET6 */
+ default:
+ break;
+ }
+
+ if (nextpkt != NULL) {
+ if (*mp != NULL) {
+ struct mbuf *m = *mp;
+ while (m->m_nextpkt != NULL)
+ m = m->m_nextpkt;
+ m->m_nextpkt = nextpkt;
+ } else {
+ *mp = nextpkt;
+ }
+ }
+ if (mppn != NULL && *mppn != NULL)
+ *mppn = *mp;
+
+ if (!reentry) {
+ ifp->if_pf_curthread = NULL;
+ lck_mtx_unlock(pf_lock);
+ }
+done:
+ if (!reentry)
+ lck_rw_done(pf_perim_lock);
+
+ return (error);
+}
+
+
+#if INET
+static int
+pf_inet_hook(struct ifnet *ifp, struct mbuf **mp, int input)
+{
+ struct mbuf *m = *mp;
+#if BYTE_ORDER != BIG_ENDIAN
+ struct ip *ip = mtod(m, struct ip *);
+#endif
+ int error = 0;
+
+ /*
+ * If the packet is outbound, is originated locally, is flagged for
+ * delayed UDP/TCP checksum calculation, and is about to be processed
+ * for an interface that doesn't support the appropriate checksum
+ * offloading, then calculated the checksum here so that PF can adjust
+ * it properly.
+ */
+ if (!input && m->m_pkthdr.rcvif == NULL) {
+ static const int mask = CSUM_DELAY_DATA;
+ const int flags = m->m_pkthdr.csum_flags &
+ ~IF_HWASSIST_CSUM_FLAGS(ifp->if_hwassist);
+
+ if (flags & mask) {
+ in_delayed_cksum(m);
+ m->m_pkthdr.csum_flags &= ~mask;
+ }
+ }
+
+#if BYTE_ORDER != BIG_ENDIAN
+ HTONS(ip->ip_len);
+ HTONS(ip->ip_off);
+#endif
+ if (pf_test(input ? PF_IN : PF_OUT, ifp, mp, NULL) != PF_PASS) {
+ if (*mp != NULL) {
+ m_freem(*mp);
+ *mp = NULL;
+ error = EHOSTUNREACH;
+ } else {
+ error = ENOBUFS;
+ }
+ }
+#if BYTE_ORDER != BIG_ENDIAN
+ else {
+ ip = mtod(*mp, struct ip *);
+ NTOHS(ip->ip_len);
+ NTOHS(ip->ip_off);
+ }
+#endif
+ return (error);
+}
+#endif /* INET */
+
+#if INET6
+int
+pf_inet6_hook(struct ifnet *ifp, struct mbuf **mp, int input)
+{
+ int error = 0;
+
+#if 0
+ /*
+ * TODO: once we support IPv6 hardware checksum offload
+ */
+ /*
+ * If the packet is outbound, is originated locally, is flagged for
+ * delayed UDP/TCP checksum calculation, and is about to be processed
+ * for an interface that doesn't support the appropriate checksum
+ * offloading, then calculated the checksum here so that PF can adjust
+ * it properly.
+ */
+ if (!input && (*mp)->m_pkthdr.rcvif == NULL) {
+ static const int mask = CSUM_DELAY_DATA;
+ const int flags = (*mp)->m_pkthdr.csum_flags &
+ ~IF_HWASSIST_CSUM_FLAGS(ifp->if_hwassist);
+
+ if (flags & mask) {
+ in6_delayed_cksum(*mp);
+ (*mp)->m_pkthdr.csum_flags &= ~mask;
+ }
+ }
+#endif
+
+ if (pf_test6(input ? PF_IN : PF_OUT, ifp, mp, NULL) != PF_PASS) {
+ if (*mp != NULL) {
+ m_freem(*mp);
+ *mp = NULL;
+ error = EHOSTUNREACH;
+ } else {
+ error = ENOBUFS;
+ }
+ }
+ return (error);
+}
+#endif /* INET6 */
+
+int
+pf_ifaddr_hook(struct ifnet *ifp, unsigned long cmd)
+{
+ lck_rw_lock_shared(pf_perim_lock);
+ if (!pf_hooks_attached)
+ goto done;
+
+ lck_mtx_lock(pf_lock);
+
+ switch (cmd) {
+ case SIOCSIFADDR:
+ case SIOCAIFADDR:
+ case SIOCDIFADDR:
+#if INET6
+ case SIOCAIFADDR_IN6:
+ case SIOCDIFADDR_IN6:
+#endif /* INET6 */
+ if (ifp->if_pf_kif != NULL)
+ pfi_kifaddr_update(ifp->if_pf_kif);
+ break;
+ default:
+ panic("%s: unexpected ioctl %lu", __func__, cmd);
+ /* NOTREACHED */
+ }
+
+ lck_mtx_unlock(pf_lock);
+done:
+ lck_rw_done(pf_perim_lock);
+ return (0);
+}
+
+/*
+ * Caller acquires dlil lock as writer (exclusive)
+ */
+void
+pf_ifnet_hook(struct ifnet *ifp, int attach)
+{
+ lck_rw_lock_shared(pf_perim_lock);
+ if (!pf_hooks_attached)
+ goto done;
+
+ lck_mtx_lock(pf_lock);
+ if (attach)
+ pfi_attach_ifnet(ifp);
+ else
+ pfi_detach_ifnet(ifp);
+ lck_mtx_unlock(pf_lock);
+done:
+ lck_rw_done(pf_perim_lock);
+}
+
+static void
+pf_attach_hooks(void)
+{
+ int i;
+
+ if (pf_hooks_attached)
+ return;
+
+ ifnet_head_lock_shared();
+ for (i = 0; i <= if_index; i++) {
+ struct ifnet *ifp = ifindex2ifnet[i];
+ if (ifp != NULL) {
+ pfi_attach_ifnet(ifp);
+ }
+ }
+ ifnet_head_done();
+ pf_hooks_attached = 1;
+}
+
+static void
+pf_detach_hooks(void)
+{
+ int i;
+
+ if (!pf_hooks_attached)
+ return;
+
+ ifnet_head_lock_shared();
+ for (i = 0; i <= if_index; i++) {
+ struct ifnet *ifp = ifindex2ifnet[i];
+ if (ifp != NULL && ifp->if_pf_kif != NULL) {
+ pfi_detach_ifnet(ifp);
+ }
+ }
+ ifnet_head_done();
+ pf_hooks_attached = 0;
+}
projects / apple / xnu.git / blobdiff