--- /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_if.c,v 1.4 2008/08/27 00:01:32 jhw Exp $ */
+/* $OpenBSD: pf_if.c,v 1.46 2006/12/13 09:01:59 itojun Exp $ */
+
+/*
+ * Copyright 2005 Henning Brauer <henning@openbsd.org>
+ * Copyright 2005 Ryan McBride <mcbride@openbsd.org>
+ * Copyright (c) 2001 Daniel Hartmeier
+ * Copyright (c) 2003 Cedric Berger
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/mbuf.h>
+#include <sys/filio.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <sys/kernel.h>
+#include <sys/time.h>
+#include <sys/malloc.h>
+
+#include <net/if.h>
+#include <net/if_types.h>
+#include <net/if_var.h>
+
+#include <netinet/in.h>
+#include <netinet/in_var.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netinet/ip_var.h>
+
+#if INET6
+#include <netinet/ip6.h>
+#endif /* INET6 */
+
+#include <net/pfvar.h>
+
+struct pfi_kif *pfi_all = NULL;
+
+static struct pool pfi_addr_pl;
+static struct pfi_ifhead pfi_ifs;
+static u_int32_t pfi_update = 1;
+static struct pfr_addr *pfi_buffer;
+static int pfi_buffer_cnt;
+static int pfi_buffer_max;
+
+__private_extern__ void pfi_kifaddr_update(void *);
+
+static void pfi_kif_update(struct pfi_kif *);
+static void pfi_dynaddr_update(struct pfi_dynaddr *dyn);
+static void pfi_table_update(struct pfr_ktable *, struct pfi_kif *, int, int);
+static void pfi_instance_add(struct ifnet *, int, int);
+static void pfi_address_add(struct sockaddr *, int, int);
+static int pfi_if_compare(struct pfi_kif *, struct pfi_kif *);
+static int pfi_skip_if(const char *, struct pfi_kif *);
+static int pfi_unmask(void *);
+
+RB_PROTOTYPE_SC(static, pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare);
+RB_GENERATE(pfi_ifhead, pfi_kif, pfik_tree, pfi_if_compare);
+
+#define PFI_BUFFER_MAX 0x10000
+#define PFI_MTYPE M_IFADDR
+
+#define IFG_ALL "ALL"
+
+void
+pfi_initialize(void)
+{
+ if (pfi_all != NULL) /* already initialized */
+ return;
+
+ pool_init(&pfi_addr_pl, sizeof (struct pfi_dynaddr), 0, 0, 0,
+ "pfiaddrpl", NULL);
+ pfi_buffer_max = 64;
+ pfi_buffer = _MALLOC(pfi_buffer_max * sizeof (*pfi_buffer),
+ PFI_MTYPE, M_WAITOK);
+
+ if ((pfi_all = pfi_kif_get(IFG_ALL)) == NULL)
+ panic("pfi_kif_get for pfi_all failed");
+}
+
+#if 0
+void
+pfi_destroy(void)
+{
+ pool_destroy(&pfi_addr_pl);
+ _FREE(pfi_buffer, PFI_MTYPE);
+}
+#endif
+
+struct pfi_kif *
+pfi_kif_get(const char *kif_name)
+{
+ struct pfi_kif *kif;
+ struct pfi_kif_cmp s;
+
+ bzero(&s, sizeof (s));
+ strlcpy(s.pfik_name, kif_name, sizeof (s.pfik_name));
+ if ((kif = RB_FIND(pfi_ifhead, &pfi_ifs, (struct pfi_kif *)&s)) != NULL)
+ return (kif);
+
+ /* create new one */
+ if ((kif = _MALLOC(sizeof (*kif), PFI_MTYPE, M_WAITOK|M_ZERO)) == NULL)
+ return (NULL);
+
+ strlcpy(kif->pfik_name, kif_name, sizeof (kif->pfik_name));
+ kif->pfik_tzero = pf_time_second();
+ TAILQ_INIT(&kif->pfik_dynaddrs);
+
+ RB_INSERT(pfi_ifhead, &pfi_ifs, kif);
+ return (kif);
+}
+
+void
+pfi_kif_ref(struct pfi_kif *kif, enum pfi_kif_refs what)
+{
+ switch (what) {
+ case PFI_KIF_REF_RULE:
+ kif->pfik_rules++;
+ break;
+ case PFI_KIF_REF_STATE:
+ kif->pfik_states++;
+ break;
+ default:
+ panic("pfi_kif_ref with unknown type");
+ }
+}
+
+void
+pfi_kif_unref(struct pfi_kif *kif, enum pfi_kif_refs what)
+{
+ if (kif == NULL)
+ return;
+
+ switch (what) {
+ case PFI_KIF_REF_NONE:
+ break;
+ case PFI_KIF_REF_RULE:
+ if (kif->pfik_rules <= 0) {
+ printf("pfi_kif_unref: rules refcount <= 0\n");
+ return;
+ }
+ kif->pfik_rules--;
+ break;
+ case PFI_KIF_REF_STATE:
+ if (kif->pfik_states <= 0) {
+ printf("pfi_kif_unref: state refcount <= 0\n");
+ return;
+ }
+ kif->pfik_states--;
+ break;
+ default:
+ panic("pfi_kif_unref with unknown type");
+ }
+
+ if (kif->pfik_ifp != NULL || kif == pfi_all)
+ return;
+
+ if (kif->pfik_rules || kif->pfik_states)
+ return;
+
+ RB_REMOVE(pfi_ifhead, &pfi_ifs, kif);
+ _FREE(kif, PFI_MTYPE);
+}
+
+int
+pfi_kif_match(struct pfi_kif *rule_kif, struct pfi_kif *packet_kif)
+{
+
+ if (rule_kif == NULL || rule_kif == packet_kif)
+ return (1);
+
+ return (0);
+}
+
+void
+pfi_attach_ifnet(struct ifnet *ifp)
+{
+ struct pfi_kif *kif;
+ char if_name[IFNAMSIZ];
+
+ lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+
+ pfi_update++;
+ (void) snprintf(if_name, sizeof (if_name), "%s%d",
+ ifp->if_name, ifp->if_unit);
+ if ((kif = pfi_kif_get(if_name)) == NULL)
+ panic("pfi_kif_get failed");
+
+ ifnet_lock_exclusive(ifp);
+ kif->pfik_ifp = ifp;
+ ifp->if_pf_kif = kif;
+ ifnet_lock_done(ifp);
+
+ pfi_kif_update(kif);
+}
+
+/*
+ * Caller holds ifnet lock as writer (exclusive);
+ */
+void
+pfi_detach_ifnet(struct ifnet *ifp)
+{
+ struct pfi_kif *kif;
+
+ lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+
+ if ((kif = (struct pfi_kif *)ifp->if_pf_kif) == NULL)
+ return;
+
+ pfi_update++;
+ pfi_kif_update(kif);
+
+ ifnet_lock_exclusive(ifp);
+ kif->pfik_ifp = NULL;
+ ifp->if_pf_kif = NULL;
+ ifnet_lock_done(ifp);
+
+ pfi_kif_unref(kif, PFI_KIF_REF_NONE);
+}
+
+int
+pfi_match_addr(struct pfi_dynaddr *dyn, struct pf_addr *a, sa_family_t af)
+{
+ switch (af) {
+#if INET
+ case AF_INET:
+ switch (dyn->pfid_acnt4) {
+ case 0:
+ return (0);
+ case 1:
+ return (PF_MATCHA(0, &dyn->pfid_addr4,
+ &dyn->pfid_mask4, a, AF_INET));
+ default:
+ return (pfr_match_addr(dyn->pfid_kt, a, AF_INET));
+ }
+ break;
+#endif /* INET */
+#if INET6
+ case AF_INET6:
+ switch (dyn->pfid_acnt6) {
+ case 0:
+ return (0);
+ case 1:
+ return (PF_MATCHA(0, &dyn->pfid_addr6,
+ &dyn->pfid_mask6, a, AF_INET6));
+ default:
+ return (pfr_match_addr(dyn->pfid_kt, a, AF_INET6));
+ }
+ break;
+#endif /* INET6 */
+ default:
+ return (0);
+ }
+}
+
+int
+pfi_dynaddr_setup(struct pf_addr_wrap *aw, sa_family_t af)
+{
+ struct pfi_dynaddr *dyn;
+ char tblname[PF_TABLE_NAME_SIZE];
+ struct pf_ruleset *ruleset = NULL;
+ int rv = 0;
+
+ lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+
+ if (aw->type != PF_ADDR_DYNIFTL)
+ return (0);
+ if ((dyn = pool_get(&pfi_addr_pl, PR_WAITOK)) == NULL)
+ return (1);
+ bzero(dyn, sizeof (*dyn));
+
+ if (strcmp(aw->v.ifname, "self") == 0)
+ dyn->pfid_kif = pfi_kif_get(IFG_ALL);
+ else
+ dyn->pfid_kif = pfi_kif_get(aw->v.ifname);
+ if (dyn->pfid_kif == NULL) {
+ rv = 1;
+ goto _bad;
+ }
+ pfi_kif_ref(dyn->pfid_kif, PFI_KIF_REF_RULE);
+
+ dyn->pfid_net = pfi_unmask(&aw->v.a.mask);
+ if (af == AF_INET && dyn->pfid_net == 32)
+ dyn->pfid_net = 128;
+ strlcpy(tblname, aw->v.ifname, sizeof (tblname));
+ if (aw->iflags & PFI_AFLAG_NETWORK)
+ strlcat(tblname, ":network", sizeof (tblname));
+ if (aw->iflags & PFI_AFLAG_BROADCAST)
+ strlcat(tblname, ":broadcast", sizeof (tblname));
+ if (aw->iflags & PFI_AFLAG_PEER)
+ strlcat(tblname, ":peer", sizeof (tblname));
+ if (aw->iflags & PFI_AFLAG_NOALIAS)
+ strlcat(tblname, ":0", sizeof (tblname));
+ if (dyn->pfid_net != 128)
+ snprintf(tblname + strlen(tblname),
+ sizeof (tblname) - strlen(tblname), "/%d", dyn->pfid_net);
+ if ((ruleset = pf_find_or_create_ruleset(PF_RESERVED_ANCHOR)) == NULL) {
+ rv = 1;
+ goto _bad;
+ }
+
+ if ((dyn->pfid_kt = pfr_attach_table(ruleset, tblname)) == NULL) {
+ rv = 1;
+ goto _bad;
+ }
+
+ dyn->pfid_kt->pfrkt_flags |= PFR_TFLAG_ACTIVE;
+ dyn->pfid_iflags = aw->iflags;
+ dyn->pfid_af = af;
+
+ TAILQ_INSERT_TAIL(&dyn->pfid_kif->pfik_dynaddrs, dyn, entry);
+ aw->p.dyn = dyn;
+ pfi_kif_update(dyn->pfid_kif);
+ return (0);
+
+_bad:
+ if (dyn->pfid_kt != NULL)
+ pfr_detach_table(dyn->pfid_kt);
+ if (ruleset != NULL)
+ pf_remove_if_empty_ruleset(ruleset);
+ if (dyn->pfid_kif != NULL)
+ pfi_kif_unref(dyn->pfid_kif, PFI_KIF_REF_RULE);
+ pool_put(&pfi_addr_pl, dyn);
+ return (rv);
+}
+
+void
+pfi_kif_update(struct pfi_kif *kif)
+{
+ struct pfi_dynaddr *p;
+
+ lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+
+ /* update all dynaddr */
+ TAILQ_FOREACH(p, &kif->pfik_dynaddrs, entry)
+ pfi_dynaddr_update(p);
+}
+
+void
+pfi_dynaddr_update(struct pfi_dynaddr *dyn)
+{
+ struct pfi_kif *kif;
+ struct pfr_ktable *kt;
+
+ if (dyn == NULL || dyn->pfid_kif == NULL || dyn->pfid_kt == NULL)
+ panic("pfi_dynaddr_update");
+
+ kif = dyn->pfid_kif;
+ kt = dyn->pfid_kt;
+
+ if (kt->pfrkt_larg != pfi_update) {
+ /* this table needs to be brought up-to-date */
+ pfi_table_update(kt, kif, dyn->pfid_net, dyn->pfid_iflags);
+ kt->pfrkt_larg = pfi_update;
+ }
+ pfr_dynaddr_update(kt, dyn);
+}
+
+void
+pfi_table_update(struct pfr_ktable *kt, struct pfi_kif *kif, int net, int flags)
+{
+ int e, size2 = 0;
+
+ pfi_buffer_cnt = 0;
+
+ if (kif->pfik_ifp != NULL)
+ pfi_instance_add(kif->pfik_ifp, net, flags);
+
+ if ((e = pfr_set_addrs(&kt->pfrkt_t, pfi_buffer, pfi_buffer_cnt, &size2,
+ NULL, NULL, NULL, 0, PFR_TFLAG_ALLMASK)))
+ printf("pfi_table_update: cannot set %d new addresses "
+ "into table %s: %d\n", pfi_buffer_cnt, kt->pfrkt_name, e);
+}
+
+void
+pfi_instance_add(struct ifnet *ifp, int net, int flags)
+{
+ struct ifaddr *ia;
+ int got4 = 0, got6 = 0;
+ int net2, af;
+
+ if (ifp == NULL)
+ return;
+ ifnet_lock_shared(ifp);
+ TAILQ_FOREACH(ia, &ifp->if_addrhead, ifa_link) {
+ if (ia->ifa_addr == NULL)
+ continue;
+ af = ia->ifa_addr->sa_family;
+ if (af != AF_INET && af != AF_INET6)
+ continue;
+ if ((flags & PFI_AFLAG_BROADCAST) && af == AF_INET6)
+ continue;
+ if ((flags & PFI_AFLAG_BROADCAST) &&
+ !(ifp->if_flags & IFF_BROADCAST))
+ continue;
+ if ((flags & PFI_AFLAG_PEER) &&
+ !(ifp->if_flags & IFF_POINTOPOINT))
+ continue;
+ if ((flags & PFI_AFLAG_NETWORK) && af == AF_INET6 &&
+ IN6_IS_ADDR_LINKLOCAL(
+ &((struct sockaddr_in6 *)ia->ifa_addr)->sin6_addr))
+ continue;
+ if (flags & PFI_AFLAG_NOALIAS) {
+ if (af == AF_INET && got4)
+ continue;
+ if (af == AF_INET6 && got6)
+ continue;
+ }
+ if (af == AF_INET)
+ got4 = 1;
+ else if (af == AF_INET6)
+ got6 = 1;
+ net2 = net;
+ if (net2 == 128 && (flags & PFI_AFLAG_NETWORK)) {
+ if (af == AF_INET)
+ net2 = pfi_unmask(&((struct sockaddr_in *)
+ ia->ifa_netmask)->sin_addr);
+ else if (af == AF_INET6)
+ net2 = pfi_unmask(&((struct sockaddr_in6 *)
+ ia->ifa_netmask)->sin6_addr);
+ }
+ if (af == AF_INET && net2 > 32)
+ net2 = 32;
+ if (flags & PFI_AFLAG_BROADCAST)
+ pfi_address_add(ia->ifa_broadaddr, af, net2);
+ else if (flags & PFI_AFLAG_PEER)
+ pfi_address_add(ia->ifa_dstaddr, af, net2);
+ else
+ pfi_address_add(ia->ifa_addr, af, net2);
+ }
+ ifnet_lock_done(ifp);
+}
+
+void
+pfi_address_add(struct sockaddr *sa, int af, int net)
+{
+ struct pfr_addr *p;
+ int i;
+
+ if (pfi_buffer_cnt >= pfi_buffer_max) {
+ int new_max = pfi_buffer_max * 2;
+
+ if (new_max > PFI_BUFFER_MAX) {
+ printf("pfi_address_add: address buffer full (%d/%d)\n",
+ pfi_buffer_cnt, PFI_BUFFER_MAX);
+ return;
+ }
+ p = _MALLOC(new_max * sizeof (*pfi_buffer), PFI_MTYPE,
+ M_WAITOK);
+ if (p == NULL) {
+ printf("pfi_address_add: no memory to grow buffer "
+ "(%d/%d)\n", pfi_buffer_cnt, PFI_BUFFER_MAX);
+ return;
+ }
+ memcpy(pfi_buffer, p, pfi_buffer_cnt * sizeof (*pfi_buffer));
+ /* no need to zero buffer */
+ _FREE(pfi_buffer, PFI_MTYPE);
+ pfi_buffer = p;
+ pfi_buffer_max = new_max;
+ }
+ if (af == AF_INET && net > 32)
+ net = 128;
+ p = pfi_buffer + pfi_buffer_cnt++;
+ bzero(p, sizeof (*p));
+ p->pfra_af = af;
+ p->pfra_net = net;
+ if (af == AF_INET)
+ p->pfra_ip4addr = ((struct sockaddr_in *)sa)->sin_addr;
+ else if (af == AF_INET6) {
+ p->pfra_ip6addr = ((struct sockaddr_in6 *)sa)->sin6_addr;
+ if (IN6_IS_SCOPE_EMBED(&p->pfra_ip6addr))
+ p->pfra_ip6addr.s6_addr16[1] = 0;
+ }
+ /* mask network address bits */
+ if (net < 128)
+ ((caddr_t)p)[p->pfra_net/8] &= ~(0xFF >> (p->pfra_net%8));
+ for (i = (p->pfra_net+7)/8; i < (int)sizeof (p->pfra_u); i++)
+ ((caddr_t)p)[i] = 0;
+}
+
+void
+pfi_dynaddr_remove(struct pf_addr_wrap *aw)
+{
+ if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL ||
+ aw->p.dyn->pfid_kif == NULL || aw->p.dyn->pfid_kt == NULL)
+ return;
+
+ TAILQ_REMOVE(&aw->p.dyn->pfid_kif->pfik_dynaddrs, aw->p.dyn, entry);
+ pfi_kif_unref(aw->p.dyn->pfid_kif, PFI_KIF_REF_RULE);
+ aw->p.dyn->pfid_kif = NULL;
+ pfr_detach_table(aw->p.dyn->pfid_kt);
+ aw->p.dyn->pfid_kt = NULL;
+ pool_put(&pfi_addr_pl, aw->p.dyn);
+ aw->p.dyn = NULL;
+}
+
+void
+pfi_dynaddr_copyout(struct pf_addr_wrap *aw)
+{
+ if (aw->type != PF_ADDR_DYNIFTL || aw->p.dyn == NULL ||
+ aw->p.dyn->pfid_kif == NULL)
+ return;
+ aw->p.dyncnt = aw->p.dyn->pfid_acnt4 + aw->p.dyn->pfid_acnt6;
+}
+
+void
+pfi_kifaddr_update(void *v)
+{
+ struct pfi_kif *kif = (struct pfi_kif *)v;
+
+ lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+
+ pfi_update++;
+ pfi_kif_update(kif);
+}
+
+int
+pfi_if_compare(struct pfi_kif *p, struct pfi_kif *q)
+{
+ return (strncmp(p->pfik_name, q->pfik_name, IFNAMSIZ));
+}
+
+void
+pfi_update_status(const char *name, struct pf_status *pfs)
+{
+ struct pfi_kif *p;
+ struct pfi_kif_cmp key;
+ int i, j, k;
+
+ lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+
+ strlcpy(key.pfik_name, name, sizeof (key.pfik_name));
+ p = RB_FIND(pfi_ifhead, &pfi_ifs, (struct pfi_kif *)&key);
+ if (p == NULL)
+ return;
+
+ if (pfs) {
+ bzero(pfs->pcounters, sizeof (pfs->pcounters));
+ bzero(pfs->bcounters, sizeof (pfs->bcounters));
+ }
+ /* just clear statistics */
+ if (pfs == NULL) {
+ bzero(p->pfik_packets, sizeof (p->pfik_packets));
+ bzero(p->pfik_bytes, sizeof (p->pfik_bytes));
+ p->pfik_tzero = pf_time_second();
+ }
+ for (i = 0; i < 2; i++)
+ for (j = 0; j < 2; j++)
+ for (k = 0; k < 2; k++) {
+ pfs->pcounters[i][j][k] +=
+ p->pfik_packets[i][j][k];
+ pfs->bcounters[i][j] +=
+ p->pfik_bytes[i][j][k];
+ }
+}
+
+int
+pfi_get_ifaces(const char *name, struct pfi_kif *buf, int *size)
+{
+ struct pfi_kif *p, *nextp;
+ int n = 0;
+
+ lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+
+ for (p = RB_MIN(pfi_ifhead, &pfi_ifs); p; p = nextp) {
+ nextp = RB_NEXT(pfi_ifhead, &pfi_ifs, p);
+ if (pfi_skip_if(name, p))
+ continue;
+ if (*size > n++) {
+ if (!p->pfik_tzero)
+ p->pfik_tzero = pf_time_second();
+ pfi_kif_ref(p, PFI_KIF_REF_RULE);
+ buf++;
+ if (copyout(p, CAST_USER_ADDR_T(buf), sizeof (*buf))) {
+ pfi_kif_unref(p, PFI_KIF_REF_RULE);
+ return (EFAULT);
+ }
+ nextp = RB_NEXT(pfi_ifhead, &pfi_ifs, p);
+ pfi_kif_unref(p, PFI_KIF_REF_RULE);
+ }
+ }
+ *size = n;
+ return (0);
+}
+
+int
+pfi_skip_if(const char *filter, struct pfi_kif *p)
+{
+ int n;
+
+ if (filter == NULL || !*filter)
+ return (0);
+ if (strcmp(p->pfik_name, filter) == 0)
+ return (0); /* exact match */
+ n = strlen(filter);
+ if (n < 1 || n >= IFNAMSIZ)
+ return (1); /* sanity check */
+ if (filter[n-1] >= '0' && filter[n-1] <= '9')
+ return (1); /* only do exact match in that case */
+ if (strncmp(p->pfik_name, filter, n))
+ return (1); /* prefix doesn't match */
+ return (p->pfik_name[n] < '0' || p->pfik_name[n] > '9');
+}
+
+int
+pfi_set_flags(const char *name, int flags)
+{
+ struct pfi_kif *p;
+
+ lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+
+ RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
+ if (pfi_skip_if(name, p))
+ continue;
+ p->pfik_flags |= flags;
+ }
+ return (0);
+}
+
+int
+pfi_clear_flags(const char *name, int flags)
+{
+ struct pfi_kif *p;
+
+ lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
+
+ RB_FOREACH(p, pfi_ifhead, &pfi_ifs) {
+ if (pfi_skip_if(name, p))
+ continue;
+ p->pfik_flags &= ~flags;
+ }
+ return (0);
+}
+
+/* from pf_print_state.c */
+int
+pfi_unmask(void *addr)
+{
+ struct pf_addr *m = addr;
+ int i = 31, j = 0, b = 0;
+ u_int32_t tmp;
+
+ while (j < 4 && m->addr32[j] == 0xffffffff) {
+ b += 32;
+ j++;
+ }
+ if (j < 4) {
+ tmp = ntohl(m->addr32[j]);
+ for (i = 31; tmp & (1 << i); --i)
+ b++;
+ }
+ return (b);
+}
projects / apple / xnu.git / blobdiff