+/*
+ * Copyright (c) 2008-2020 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@
+ */
+
/* $FreeBSD: src/sys/netkey/key.c,v 1.16.2.13 2002/07/24 18:17:40 ume Exp $ */
/* $KAME: key.c,v 1.191 2001/06/27 10:46:49 sakane Exp $ */
* This code is referd to RFC 2367
*/
+#include <machine/endian.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/queue.h>
#include <sys/syslog.h>
+#include <sys/mcache.h>
#include <kern/locks.h>
#include <netinet/ip.h>
#include <netinet/in_var.h>
-#if INET6
#include <netinet/ip6.h>
#include <netinet6/in6_var.h>
#include <netinet6/ip6_var.h>
-#endif /* INET6 */
-
-#if INET
-#include <netinet/in_pcb.h>
-#endif
-#if INET6
-#include <netinet6/in6_pcb.h>
-#endif /* INET6 */
#include <net/pfkeyv2.h>
#include <netkey/keydb.h>
#include <netkey/keysock.h>
#include <netkey/key_debug.h>
#include <stdarg.h>
-
+#include <libkern/crypto/rand.h>
#include <netinet6/ipsec.h>
-#if INET6
#include <netinet6/ipsec6.h>
-#endif
#include <netinet6/ah.h>
-#if INET6
#include <netinet6/ah6.h>
-#endif
#if IPSEC_ESP
#include <netinet6/esp.h>
-#if INET6
#include <netinet6/esp6.h>
#endif
-#endif
-#include <netinet6/ipcomp.h>
-#if INET6
-#include <netinet6/ipcomp6.h>
-#endif
/* randomness */
#include <net/net_osdep.h>
-#ifndef satosin
-#define satosin(s) ((struct sockaddr_in *)s)
-#endif
-
-#define FULLMASK 0xff
+#define FULLMASK 0xff
lck_grp_t *sadb_mutex_grp;
lck_grp_attr_t *sadb_mutex_grp_attr;
lck_attr_t *sadb_mutex_attr;
-lck_mtx_t *sadb_mutex;
-extern lck_mtx_t *nd6_mutex;
+decl_lck_mtx_data(, sadb_mutex_data);
+lck_mtx_t *sadb_mutex = &sadb_mutex_data;
+
+lck_grp_t *pfkey_stat_mutex_grp;
+lck_grp_attr_t *pfkey_stat_mutex_grp_attr;
+lck_attr_t *pfkey_stat_mutex_attr;
+decl_lck_mtx_data(, pfkey_stat_mutex_data);
+lck_mtx_t *pfkey_stat_mutex = &pfkey_stat_mutex_data;
/*
* Note on SA reference counting:
*/
u_int32_t key_debug_level = 0; //### our sysctl is not dynamic
+static int key_timehandler_running = 0;
static u_int key_spi_trycnt = 1000;
static u_int32_t key_spi_minval = 0x100;
-static u_int32_t key_spi_maxval = 0x0fffffff; /* XXX */
+static u_int32_t key_spi_maxval = 0x0fffffff; /* XXX */
static u_int32_t policy_id = 0;
-static u_int key_int_random = 60; /*interval to initialize randseed,1(m)*/
-static u_int key_larval_lifetime = 30; /* interval to expire acquiring, 30(s)*/
-static int key_blockacq_count = 10; /* counter for blocking SADB_ACQUIRE.*/
-static int key_blockacq_lifetime = 20; /* lifetime for blocking SADB_ACQUIRE.*/
-static int key_preferred_oldsa = 0; /* preferred old sa rather than new sa.*/
-static int natt_keepalive_interval = 20; /* interval between natt keepalives.*/
+static u_int key_int_random = 60; /*interval to initialize randseed,1(m)*/
+static u_int key_larval_lifetime = 30; /* interval to expire acquiring, 30(s)*/
+static int key_blockacq_count = 10; /* counter for blocking SADB_ACQUIRE.*/
+static int key_blockacq_lifetime = 20; /* lifetime for blocking SADB_ACQUIRE.*/
+static int key_preferred_oldsa = 0; /* preferred old sa rather than new sa.*/
+__private_extern__ int natt_keepalive_interval = 20; /* interval between natt keepalives.*/
+static u_int32_t ipsec_policy_count = 0;
+static u_int32_t ipsec_sav_count = 0;
static u_int32_t acq_seq = 0;
static int key_tick_init_random = 0;
-__private_extern__ u_int32_t natt_now = 0;
+static u_int64_t up_time = 0;
+__private_extern__ u_int64_t natt_now = 0;
-static LIST_HEAD(_sptree, secpolicy) sptree[IPSEC_DIR_MAX]; /* SPD */
-static LIST_HEAD(_sahtree, secashead) sahtree; /* SAD */
+static LIST_HEAD(_sptree, secpolicy) sptree[IPSEC_DIR_MAX]; /* SPD */
+static LIST_HEAD(_sahtree, secashead) sahtree; /* SAD */
static LIST_HEAD(_regtree, secreg) regtree[SADB_SATYPE_MAX + 1];
- /* registed list */
-
-#define SPIHASHSIZE 128
-#define SPIHASH(x) (((x) ^ ((x) >> 16)) % SPIHASHSIZE)
+static LIST_HEAD(_custom_sahtree, secashead) custom_sahtree;
+/* registed list */
+
+#define SPIHASHSIZE 128
+#define SPIHASH(x) (((x) ^ ((x) >> 16)) % SPIHASHSIZE)
static LIST_HEAD(_spihash, secasvar) spihash[SPIHASHSIZE];
#ifndef IPSEC_NONBLOCK_ACQUIRE
-static LIST_HEAD(_acqtree, secacq) acqtree; /* acquiring list */
+static LIST_HEAD(_acqtree, secacq) acqtree; /* acquiring list */
#endif
-static LIST_HEAD(_spacqtree, secspacq) spacqtree; /* SP acquiring list */
+static LIST_HEAD(_spacqtree, secspacq) spacqtree; /* SP acquiring list */
struct key_cb key_cb;
};
static const int minsize[] = {
- sizeof(struct sadb_msg), /* SADB_EXT_RESERVED */
- sizeof(struct sadb_sa), /* SADB_EXT_SA */
- sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_CURRENT */
- sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_HARD */
- sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_SOFT */
- sizeof(struct sadb_address), /* SADB_EXT_ADDRESS_SRC */
- sizeof(struct sadb_address), /* SADB_EXT_ADDRESS_DST */
- sizeof(struct sadb_address), /* SADB_EXT_ADDRESS_PROXY */
- sizeof(struct sadb_key), /* SADB_EXT_KEY_AUTH */
- sizeof(struct sadb_key), /* SADB_EXT_KEY_ENCRYPT */
- sizeof(struct sadb_ident), /* SADB_EXT_IDENTITY_SRC */
- sizeof(struct sadb_ident), /* SADB_EXT_IDENTITY_DST */
- sizeof(struct sadb_sens), /* SADB_EXT_SENSITIVITY */
- sizeof(struct sadb_prop), /* SADB_EXT_PROPOSAL */
- sizeof(struct sadb_supported), /* SADB_EXT_SUPPORTED_AUTH */
- sizeof(struct sadb_supported), /* SADB_EXT_SUPPORTED_ENCRYPT */
- sizeof(struct sadb_spirange), /* SADB_EXT_SPIRANGE */
- 0, /* SADB_X_EXT_KMPRIVATE */
- sizeof(struct sadb_x_policy), /* SADB_X_EXT_POLICY */
- sizeof(struct sadb_x_sa2), /* SADB_X_SA2 */
+ sizeof(struct sadb_msg), /* SADB_EXT_RESERVED */
+ sizeof(struct sadb_sa), /* SADB_EXT_SA */
+ sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_CURRENT */
+ sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_HARD */
+ sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_SOFT */
+ sizeof(struct sadb_address), /* SADB_EXT_ADDRESS_SRC */
+ sizeof(struct sadb_address), /* SADB_EXT_ADDRESS_DST */
+ sizeof(struct sadb_address), /* SADB_EXT_ADDRESS_PROXY */
+ sizeof(struct sadb_key), /* SADB_EXT_KEY_AUTH */
+ sizeof(struct sadb_key), /* SADB_EXT_KEY_ENCRYPT */
+ sizeof(struct sadb_ident), /* SADB_EXT_IDENTITY_SRC */
+ sizeof(struct sadb_ident), /* SADB_EXT_IDENTITY_DST */
+ sizeof(struct sadb_sens), /* SADB_EXT_SENSITIVITY */
+ sizeof(struct sadb_prop), /* SADB_EXT_PROPOSAL */
+ sizeof(struct sadb_supported), /* SADB_EXT_SUPPORTED_AUTH */
+ sizeof(struct sadb_supported), /* SADB_EXT_SUPPORTED_ENCRYPT */
+ sizeof(struct sadb_spirange), /* SADB_EXT_SPIRANGE */
+ 0, /* SADB_X_EXT_KMPRIVATE */
+ sizeof(struct sadb_x_policy), /* SADB_X_EXT_POLICY */
+ sizeof(struct sadb_x_sa2), /* SADB_X_SA2 */
+ sizeof(struct sadb_session_id), /* SADB_EXT_SESSION_ID */
+ sizeof(struct sadb_sastat), /* SADB_EXT_SASTAT */
+ sizeof(struct sadb_x_ipsecif), /* SADB_X_EXT_IPSECIF */
+ sizeof(struct sadb_address), /* SADB_X_EXT_ADDR_RANGE_SRC_START */
+ sizeof(struct sadb_address), /* SADB_X_EXT_ADDR_RANGE_SRC_END */
+ sizeof(struct sadb_address), /* SADB_X_EXT_ADDR_RANGE_DST_START */
+ sizeof(struct sadb_address), /* SADB_X_EXT_ADDR_RANGE_DST_END */
+ sizeof(struct sadb_address), /* SADB_EXT_MIGRATE_ADDRESS_SRC */
+ sizeof(struct sadb_address), /* SADB_EXT_MIGRATE_ADDRESS_DST */
+ sizeof(struct sadb_x_ipsecif), /* SADB_X_EXT_MIGRATE_IPSECIF */
};
static const int maxsize[] = {
- sizeof(struct sadb_msg), /* SADB_EXT_RESERVED */
- sizeof(struct sadb_sa_2), /* SADB_EXT_SA */
- sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_CURRENT */
- sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_HARD */
- sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_SOFT */
- 0, /* SADB_EXT_ADDRESS_SRC */
- 0, /* SADB_EXT_ADDRESS_DST */
- 0, /* SADB_EXT_ADDRESS_PROXY */
- 0, /* SADB_EXT_KEY_AUTH */
- 0, /* SADB_EXT_KEY_ENCRYPT */
- 0, /* SADB_EXT_IDENTITY_SRC */
- 0, /* SADB_EXT_IDENTITY_DST */
- 0, /* SADB_EXT_SENSITIVITY */
- 0, /* SADB_EXT_PROPOSAL */
- 0, /* SADB_EXT_SUPPORTED_AUTH */
- 0, /* SADB_EXT_SUPPORTED_ENCRYPT */
- sizeof(struct sadb_spirange), /* SADB_EXT_SPIRANGE */
- 0, /* SADB_X_EXT_KMPRIVATE */
- 0, /* SADB_X_EXT_POLICY */
- sizeof(struct sadb_x_sa2), /* SADB_X_SA2 */
+ sizeof(struct sadb_msg), /* SADB_EXT_RESERVED */
+ sizeof(struct sadb_sa_2), /* SADB_EXT_SA */
+ sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_CURRENT */
+ sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_HARD */
+ sizeof(struct sadb_lifetime), /* SADB_EXT_LIFETIME_SOFT */
+ 0, /* SADB_EXT_ADDRESS_SRC */
+ 0, /* SADB_EXT_ADDRESS_DST */
+ 0, /* SADB_EXT_ADDRESS_PROXY */
+ 0, /* SADB_EXT_KEY_AUTH */
+ 0, /* SADB_EXT_KEY_ENCRYPT */
+ 0, /* SADB_EXT_IDENTITY_SRC */
+ 0, /* SADB_EXT_IDENTITY_DST */
+ 0, /* SADB_EXT_SENSITIVITY */
+ 0, /* SADB_EXT_PROPOSAL */
+ 0, /* SADB_EXT_SUPPORTED_AUTH */
+ 0, /* SADB_EXT_SUPPORTED_ENCRYPT */
+ sizeof(struct sadb_spirange), /* SADB_EXT_SPIRANGE */
+ 0, /* SADB_X_EXT_KMPRIVATE */
+ 0, /* SADB_X_EXT_POLICY */
+ sizeof(struct sadb_x_sa2), /* SADB_X_SA2 */
+ 0, /* SADB_EXT_SESSION_ID */
+ 0, /* SADB_EXT_SASTAT */
+ sizeof(struct sadb_x_ipsecif), /* SADB_X_EXT_IPSECIF */
+ 0, /* SADB_X_EXT_ADDR_RANGE_SRC_START */
+ 0, /* SADB_X_EXT_ADDR_RANGE_SRC_END */
+ 0, /* SADB_X_EXT_ADDR_RANGE_DST_START */
+ 0, /* SADB_X_EXT_ADDR_RANGE_DST_END */
+ 0, /* SADB_EXT_MIGRATE_ADDRESS_SRC */
+ 0, /* SADB_EXT_MIGRATE_ADDRESS_DST */
+ sizeof(struct sadb_x_ipsecif), /* SADB_X_EXT_MIGRATE_IPSECIF */
};
static int ipsec_esp_keymin = 256;
static int ipsec_ah_keymin = 128;
SYSCTL_DECL(_net_key);
-
-SYSCTL_INT(_net_key, KEYCTL_DEBUG_LEVEL, debug, CTLFLAG_RW, \
- &key_debug_level, 0, "");
+/* Thread safe: no accumulated state */
+SYSCTL_INT(_net_key, KEYCTL_DEBUG_LEVEL, debug, CTLFLAG_RW | CTLFLAG_LOCKED, \
+ &key_debug_level, 0, "");
/* max count of trial for the decision of spi value */
-SYSCTL_INT(_net_key, KEYCTL_SPI_TRY, spi_trycnt, CTLFLAG_RW, \
- &key_spi_trycnt, 0, "");
+SYSCTL_INT(_net_key, KEYCTL_SPI_TRY, spi_trycnt, CTLFLAG_RW | CTLFLAG_LOCKED, \
+ &key_spi_trycnt, 0, "");
/* minimum spi value to allocate automatically. */
-SYSCTL_INT(_net_key, KEYCTL_SPI_MIN_VALUE, spi_minval, CTLFLAG_RW, \
- &key_spi_minval, 0, "");
+SYSCTL_INT(_net_key, KEYCTL_SPI_MIN_VALUE, spi_minval, CTLFLAG_RW | CTLFLAG_LOCKED, \
+ &key_spi_minval, 0, "");
/* maximun spi value to allocate automatically. */
-SYSCTL_INT(_net_key, KEYCTL_SPI_MAX_VALUE, spi_maxval, CTLFLAG_RW, \
- &key_spi_maxval, 0, "");
+SYSCTL_INT(_net_key, KEYCTL_SPI_MAX_VALUE, spi_maxval, CTLFLAG_RW | CTLFLAG_LOCKED, \
+ &key_spi_maxval, 0, "");
/* interval to initialize randseed */
-SYSCTL_INT(_net_key, KEYCTL_RANDOM_INT, int_random, CTLFLAG_RW, \
- &key_int_random, 0, "");
+SYSCTL_INT(_net_key, KEYCTL_RANDOM_INT, int_random, CTLFLAG_RW | CTLFLAG_LOCKED, \
+ &key_int_random, 0, "");
-/* lifetime for larval SA */
-SYSCTL_INT(_net_key, KEYCTL_LARVAL_LIFETIME, larval_lifetime, CTLFLAG_RW, \
- &key_larval_lifetime, 0, "");
+/* lifetime for larval SA; thread safe due to > compare */
+SYSCTL_INT(_net_key, KEYCTL_LARVAL_LIFETIME, larval_lifetime, CTLFLAG_RW | CTLFLAG_LOCKED, \
+ &key_larval_lifetime, 0, "");
/* counter for blocking to send SADB_ACQUIRE to IKEd */
-SYSCTL_INT(_net_key, KEYCTL_BLOCKACQ_COUNT, blockacq_count, CTLFLAG_RW, \
- &key_blockacq_count, 0, "");
+SYSCTL_INT(_net_key, KEYCTL_BLOCKACQ_COUNT, blockacq_count, CTLFLAG_RW | CTLFLAG_LOCKED, \
+ &key_blockacq_count, 0, "");
-/* lifetime for blocking to send SADB_ACQUIRE to IKEd */
-SYSCTL_INT(_net_key, KEYCTL_BLOCKACQ_LIFETIME, blockacq_lifetime, CTLFLAG_RW, \
- &key_blockacq_lifetime, 0, "");
+/* lifetime for blocking to send SADB_ACQUIRE to IKEd: Thread safe, > compare */
+SYSCTL_INT(_net_key, KEYCTL_BLOCKACQ_LIFETIME, blockacq_lifetime, CTLFLAG_RW | CTLFLAG_LOCKED, \
+ &key_blockacq_lifetime, 0, "");
/* ESP auth */
-SYSCTL_INT(_net_key, KEYCTL_ESP_AUTH, esp_auth, CTLFLAG_RW, \
- &ipsec_esp_auth, 0, "");
+SYSCTL_INT(_net_key, KEYCTL_ESP_AUTH, esp_auth, CTLFLAG_RW | CTLFLAG_LOCKED, \
+ &ipsec_esp_auth, 0, "");
/* minimum ESP key length */
-SYSCTL_INT(_net_key, KEYCTL_ESP_KEYMIN, esp_keymin, CTLFLAG_RW, \
- &ipsec_esp_keymin, 0, "");
+SYSCTL_INT(_net_key, KEYCTL_ESP_KEYMIN, esp_keymin, CTLFLAG_RW | CTLFLAG_LOCKED, \
+ &ipsec_esp_keymin, 0, "");
/* minimum AH key length */
-SYSCTL_INT(_net_key, KEYCTL_AH_KEYMIN, ah_keymin, CTLFLAG_RW, \
- &ipsec_ah_keymin, 0, "");
+SYSCTL_INT(_net_key, KEYCTL_AH_KEYMIN, ah_keymin, CTLFLAG_RW | CTLFLAG_LOCKED, \
+ &ipsec_ah_keymin, 0, "");
/* perfered old SA rather than new SA */
-SYSCTL_INT(_net_key, KEYCTL_PREFERED_OLDSA, prefered_oldsa, CTLFLAG_RW,\
- &key_preferred_oldsa, 0, "");
+SYSCTL_INT(_net_key, KEYCTL_PREFERED_OLDSA, prefered_oldsa, CTLFLAG_RW | CTLFLAG_LOCKED, \
+ &key_preferred_oldsa, 0, "");
/* time between NATT keepalives in seconds, 0 disabled */
-SYSCTL_INT(_net_key, KEYCTL_NATT_KEEPALIVE_INTERVAL, natt_keepalive_interval, CTLFLAG_RW,\
- &natt_keepalive_interval, 0, "");
+SYSCTL_INT(_net_key, KEYCTL_NATT_KEEPALIVE_INTERVAL, natt_keepalive_interval, CTLFLAG_RW | CTLFLAG_LOCKED, \
+ &natt_keepalive_interval, 0, "");
/* PF_KEY statistics */
-SYSCTL_STRUCT(_net_key, KEYCTL_PFKEYSTAT, pfkeystat, CTLFLAG_RD,\
- &pfkeystat, pfkeystat, "");
+SYSCTL_STRUCT(_net_key, KEYCTL_PFKEYSTAT, pfkeystat, CTLFLAG_RD | CTLFLAG_LOCKED, \
+ &pfkeystat, pfkeystat, "");
#ifndef LIST_FOREACH
#define LIST_FOREACH(elm, head, field) \
- for (elm = LIST_FIRST(head); elm; elm = LIST_NEXT(elm, field))
+for (elm = LIST_FIRST(head); elm; elm = LIST_NEXT(elm, field))
#endif
#define __LIST_CHAINED(elm) \
- (!((elm)->chain.le_next == NULL && (elm)->chain.le_prev == NULL))
+(!((elm)->chain.le_next == NULL && (elm)->chain.le_prev == NULL))
#define LIST_INSERT_TAIL(head, elm, type, field) \
do {\
- struct type *curelm = LIST_FIRST(head); \
- if (curelm == NULL) {\
- LIST_INSERT_HEAD(head, elm, field); \
- } else { \
- while (LIST_NEXT(curelm, field)) \
- curelm = LIST_NEXT(curelm, field);\
- LIST_INSERT_AFTER(curelm, elm, field);\
- }\
+struct type *curelm = LIST_FIRST(head); \
+if (curelm == NULL) {\
+LIST_INSERT_HEAD(head, elm, field); \
+} else { \
+while (LIST_NEXT(curelm, field)) \
+curelm = LIST_NEXT(curelm, field);\
+LIST_INSERT_AFTER(curelm, elm, field);\
+}\
} while (0)
#define KEY_CHKSASTATE(head, sav, name) \
do { \
- if ((head) != (sav)) { \
- ipseclog((LOG_DEBUG, "%s: state mismatched (TREE=%d SA=%d)\n", \
- (name), (head), (sav))); \
- continue; \
- } \
+if ((head) != (sav)) { \
+ipseclog((LOG_DEBUG, "%s: state mismatched (TREE=%d SA=%d)\n", \
+(name), (head), (sav))); \
+continue; \
+} \
} while (0)
#define KEY_CHKSPDIR(head, sp, name) \
do { \
- if ((head) != (sp)) { \
- ipseclog((LOG_DEBUG, "%s: direction mismatched (TREE=%d SP=%d), " \
- "anyway continue.\n", \
- (name), (head), (sp))); \
- } \
+if ((head) != (sp)) { \
+ipseclog((LOG_DEBUG, "%s: direction mismatched (TREE=%d SP=%d), " \
+"anyway continue.\n", \
+(name), (head), (sp))); \
+} \
} while (0)
#if 1
-#define KMALLOC(p, t, n) \
- ((p) = (t) _MALLOC((unsigned long)(n), M_SECA, M_NOWAIT))
+#define KMALLOC_WAIT(p, t, n) \
+((p) = (t) _MALLOC((n), M_SECA, M_WAITOK))
+#define KMALLOC_NOWAIT(p, t, n) \
+((p) = (t) _MALLOC((n), M_SECA, M_NOWAIT))
#define KFREE(p) \
- _FREE((caddr_t)(p), M_SECA);
+_FREE((caddr_t)(p), M_SECA);
#else
-#define KMALLOC(p, t, n) \
+#define KMALLOC_WAIT(p, t, n) \
+do { \
+((p) = (t)_MALLOC((u_int32_t)(n), M_SECA, M_WAITOK)); \
+printf("%s %d: %p <- KMALLOC_WAIT(%s, %d)\n", \
+__FILE__, __LINE__, (p), #t, n); \
+} while (0)
+#define KMALLOC_NOWAIT(p, t, n) \
do { \
- ((p) = (t)_MALLOC((unsigned long)(n), M_SECA, M_NOWAIT)); \
- printf("%s %d: %p <- KMALLOC(%s, %d)\n", \
- __FILE__, __LINE__, (p), #t, n); \
+((p) = (t)_MALLOC((u_int32_t)(n), M_SECA, M_NOWAIT)); \
+printf("%s %d: %p <- KMALLOC_NOWAIT(%s, %d)\n", \
+__FILE__, __LINE__, (p), #t, n); \
} while (0)
#define KFREE(p) \
- do { \
- printf("%s %d: %p -> KFREE()\n", __FILE__, __LINE__, (p)); \
- _FREE((caddr_t)(p), M_SECA); \
- } while (0)
+do { \
+printf("%s %d: %p -> KFREE()\n", __FILE__, __LINE__, (p)); \
+_FREE((caddr_t)(p), M_SECA); \
+} while (0)
#endif
/*
* set parameters into secpolicyindex buffer.
* Must allocate secpolicyindex buffer passed to this function.
*/
-#define KEY_SETSECSPIDX(_dir, s, d, ps, pd, ulp, idx) \
+#define KEY_SETSECSPIDX(_dir, s, d, ps, pd, ulp, ifp, s_s, s_e, d_s, d_e, idx) \
do { \
- bzero((idx), sizeof(struct secpolicyindex)); \
- (idx)->dir = (_dir); \
- (idx)->prefs = (ps); \
- (idx)->prefd = (pd); \
- (idx)->ul_proto = (ulp); \
- bcopy((s), &(idx)->src, ((struct sockaddr *)(s))->sa_len); \
- bcopy((d), &(idx)->dst, ((struct sockaddr *)(d))->sa_len); \
+bzero((idx), sizeof(struct secpolicyindex)); \
+(idx)->dir = (_dir); \
+(idx)->prefs = (ps); \
+(idx)->prefd = (pd); \
+(idx)->ul_proto = (ulp); \
+(idx)->internal_if = (ifp); \
+if (s) bcopy((s), &(idx)->src, ((struct sockaddr *)(s))->sa_len); \
+if (d) bcopy((d), &(idx)->dst, ((struct sockaddr *)(d))->sa_len); \
+if (s_s) bcopy((s_s), &(idx)->src_range.start, ((struct sockaddr *)(s_s))->sa_len); \
+if (s_e) bcopy((s_e), &(idx)->src_range.end, ((struct sockaddr *)(s_e))->sa_len); \
+if (d_s) bcopy((d_s), &(idx)->dst_range.start, ((struct sockaddr *)(d_s))->sa_len); \
+if (d_e) bcopy((d_e), &(idx)->dst_range.end, ((struct sockaddr *)(d_e))->sa_len); \
} while (0)
/*
* set parameters into secasindex buffer.
* Must allocate secasindex buffer before calling this function.
*/
-#define KEY_SETSECASIDX(p, m, r, s, d, idx) \
+#define KEY_SETSECASIDX(p, m, r, s, d, ifi, idx) \
do { \
- bzero((idx), sizeof(struct secasindex)); \
- (idx)->proto = (p); \
- (idx)->mode = (m); \
- (idx)->reqid = (r); \
- bcopy((s), &(idx)->src, ((struct sockaddr *)(s))->sa_len); \
- bcopy((d), &(idx)->dst, ((struct sockaddr *)(d))->sa_len); \
+bzero((idx), sizeof(struct secasindex)); \
+(idx)->proto = (p); \
+(idx)->mode = (m); \
+(idx)->reqid = (r); \
+bcopy((s), &(idx)->src, ((const struct sockaddr *)(s))->sa_len); \
+bcopy((d), &(idx)->dst, ((const struct sockaddr *)(d))->sa_len); \
+(idx)->ipsec_ifindex = (ifi); \
} while (0)
/* key statistics */
struct _keystat {
- u_long getspi_count; /* the avarage of count to try to get new SPI */
+ u_int32_t getspi_count; /* the avarage of count to try to get new SPI */
} keystat;
struct sadb_msghdr {
int extlen[SADB_EXT_MAX + 1];
};
-static struct secasvar *key_allocsa_policy(struct secasindex *);
-static void key_freesp_so(struct secpolicy **);
-static struct secasvar *key_do_allocsa_policy(struct secashead *, u_int);
+static struct secpolicy *__key_getspbyid(u_int32_t id);
+static struct secasvar *key_do_allocsa_policy(struct secashead *, u_int, u_int16_t);
+static int key_do_get_translated_port(struct secashead *, struct secasvar *, u_int);
static void key_delsp(struct secpolicy *);
static struct secpolicy *key_getsp(struct secpolicyindex *);
-static struct secpolicy *key_getspbyid(u_int32_t);
-static u_int32_t key_newreqid(void);
+static u_int16_t key_newreqid(void);
static struct mbuf *key_gather_mbuf(struct mbuf *,
- const struct sadb_msghdr *, int, int, int *);
+ const struct sadb_msghdr *, int, int, int *);
static int key_spdadd(struct socket *, struct mbuf *,
- const struct sadb_msghdr *);
+ const struct sadb_msghdr *);
static u_int32_t key_getnewspid(void);
static int key_spddelete(struct socket *, struct mbuf *,
- const struct sadb_msghdr *);
+ const struct sadb_msghdr *);
static int key_spddelete2(struct socket *, struct mbuf *,
- const struct sadb_msghdr *);
+ const struct sadb_msghdr *);
+static int key_spdenable(struct socket *, struct mbuf *,
+ const struct sadb_msghdr *);
+static int key_spddisable(struct socket *, struct mbuf *,
+ const struct sadb_msghdr *);
static int key_spdget(struct socket *, struct mbuf *,
- const struct sadb_msghdr *);
+ const struct sadb_msghdr *);
static int key_spdflush(struct socket *, struct mbuf *,
- const struct sadb_msghdr *);
+ const struct sadb_msghdr *);
static int key_spddump(struct socket *, struct mbuf *,
- const struct sadb_msghdr *);
+ const struct sadb_msghdr *);
static struct mbuf *key_setdumpsp(struct secpolicy *,
- u_int8_t, u_int32_t, u_int32_t);
+ u_int8_t, u_int32_t, u_int32_t);
static u_int key_getspreqmsglen(struct secpolicy *);
static int key_spdexpire(struct secpolicy *);
-static struct secashead *key_newsah(struct secasindex *);
-static void key_delsah(struct secashead *);
+static struct secashead *key_newsah(struct secasindex *, ifnet_t, u_int, u_int8_t, u_int16_t);
static struct secasvar *key_newsav(struct mbuf *,
- const struct sadb_msghdr *, struct secashead *, int *);
-static void key_delsav(struct secasvar *);
-static struct secashead *key_getsah(struct secasindex *);
+ const struct sadb_msghdr *, struct secashead *, int *,
+ struct socket *);
+static struct secashead *key_getsah(struct secasindex *, u_int16_t);
static struct secasvar *key_checkspidup(struct secasindex *, u_int32_t);
static void key_setspi __P((struct secasvar *, u_int32_t));
static struct secasvar *key_getsavbyspi(struct secashead *, u_int32_t);
static int key_setsaval(struct secasvar *, struct mbuf *,
- const struct sadb_msghdr *);
+ const struct sadb_msghdr *);
static int key_mature(struct secasvar *);
static struct mbuf *key_setdumpsa(struct secasvar *, u_int8_t,
- u_int8_t, u_int32_t, u_int32_t);
+ u_int8_t, u_int32_t, u_int32_t);
static struct mbuf *key_setsadbmsg(u_int8_t, u_int16_t, u_int8_t,
- u_int32_t, pid_t, u_int16_t);
+ u_int32_t, pid_t, u_int16_t);
static struct mbuf *key_setsadbsa(struct secasvar *);
static struct mbuf *key_setsadbaddr(u_int16_t,
- struct sockaddr *, u_int8_t, u_int16_t);
-#if 0
-static struct mbuf *key_setsadbident(u_int16_t, u_int16_t, caddr_t,
- int, u_int64_t);
-#endif
-static struct mbuf *key_setsadbxsa2(u_int8_t, u_int32_t, u_int32_t);
+ struct sockaddr *, size_t, u_int8_t);
+static struct mbuf *key_setsadbipsecif(ifnet_t, ifnet_t, ifnet_t, u_int8_t);
+static struct mbuf *key_setsadbxsa2(u_int8_t, u_int32_t, u_int32_t, u_int16_t);
static struct mbuf *key_setsadbxpolicy(u_int16_t, u_int8_t,
- u_int32_t);
+ u_int32_t);
static void *key_newbuf(const void *, u_int);
-#if INET6
static int key_ismyaddr6(struct sockaddr_in6 *);
-#endif
+static void key_update_natt_keepalive_timestamp(struct secasvar *, struct secasvar *);
/* flags for key_cmpsaidx() */
-#define CMP_HEAD 1 /* protocol, addresses. */
-#define CMP_MODE_REQID 2 /* additionally HEAD, reqid, mode. */
-#define CMP_REQID 3 /* additionally HEAD, reaid. */
-#define CMP_EXACTLY 4 /* all elements. */
+#define CMP_HEAD 0x1 /* protocol, addresses. */
+#define CMP_PORT 0x2 /* additionally HEAD, reqid, mode. */
+#define CMP_REQID 0x4 /* additionally HEAD, reqid. */
+#define CMP_MODE 0x8 /* additionally mode. */
+#define CMP_EXACTLY 0xF /* all elements. */
static int key_cmpsaidx(struct secasindex *, struct secasindex *, int);
static int key_cmpspidx_exactly(struct secpolicyindex *,
- struct secpolicyindex *);
+ struct secpolicyindex *);
static int key_cmpspidx_withmask(struct secpolicyindex *,
- struct secpolicyindex *);
+ struct secpolicyindex *);
static int key_sockaddrcmp(struct sockaddr *, struct sockaddr *, int);
+static int key_is_addr_in_range(struct sockaddr_storage *, struct secpolicyaddrrange *);
static int key_bbcmp(caddr_t, caddr_t, u_int);
static void key_srandom(void);
-static u_int16_t key_satype2proto(u_int8_t);
+static u_int8_t key_satype2proto(u_int8_t);
static u_int8_t key_proto2satype(u_int16_t);
static int key_getspi(struct socket *, struct mbuf *,
- const struct sadb_msghdr *);
+ const struct sadb_msghdr *);
static u_int32_t key_do_getnewspi(struct sadb_spirange *, struct secasindex *);
static int key_update(struct socket *, struct mbuf *,
- const struct sadb_msghdr *);
-#if IPSEC_DOSEQCHECK
-static struct secasvar *key_getsavbyseq(struct secashead *, u_int32_t);
-#endif
+ const struct sadb_msghdr *);
static int key_add(struct socket *, struct mbuf *, const struct sadb_msghdr *);
-static int key_setident(struct secashead *, struct mbuf *,
- const struct sadb_msghdr *);
static struct mbuf *key_getmsgbuf_x1(struct mbuf *, const struct sadb_msghdr *);
static int key_delete(struct socket *, struct mbuf *,
- const struct sadb_msghdr *);
+ const struct sadb_msghdr *);
static int key_get(struct socket *, struct mbuf *, const struct sadb_msghdr *);
static void key_getcomb_setlifetime(struct sadb_comb *);
static struct mbuf *key_getcomb_esp(void);
#endif
static struct mbuf *key_getcomb_ah(void);
-static struct mbuf *key_getcomb_ipcomp(void);
static struct mbuf *key_getprop(const struct secasindex *);
static int key_acquire(struct secasindex *, struct secpolicy *);
static struct secspacq *key_newspacq(struct secpolicyindex *);
static struct secspacq *key_getspacq(struct secpolicyindex *);
static int key_acquire2(struct socket *, struct mbuf *,
- const struct sadb_msghdr *);
+ const struct sadb_msghdr *);
static int key_register(struct socket *, struct mbuf *,
- const struct sadb_msghdr *);
+ const struct sadb_msghdr *);
static int key_expire(struct secasvar *);
static int key_flush(struct socket *, struct mbuf *,
- const struct sadb_msghdr *);
+ const struct sadb_msghdr *);
static int key_dump(struct socket *, struct mbuf *, const struct sadb_msghdr *);
static int key_promisc(struct socket *, struct mbuf *,
- const struct sadb_msghdr *);
+ const struct sadb_msghdr *);
static int key_senderror(struct socket *, struct mbuf *, int);
static int key_validate_ext(const struct sadb_ext *, int);
static int key_align(struct mbuf *, struct sadb_msghdr *);
-#if 0
-static const char *key_getfqdn(void);
-static const char *key_getuserfqdn(void);
-#endif
-static void key_sa_chgstate(struct secasvar *, u_int8_t);
static struct mbuf *key_alloc_mbuf(int);
+static int key_getsastat(struct socket *, struct mbuf *, const struct sadb_msghdr *);
+static int key_migrate(struct socket *, struct mbuf *, const struct sadb_msghdr *);
+static void bzero_keys(const struct sadb_msghdr *);
extern int ipsec_bypass;
-void ipsec_send_natt_keepalive(struct secasvar *sav);
+extern int esp_udp_encap_port;
+int ipsec_send_natt_keepalive(struct secasvar *sav);
+bool ipsec_fill_offload_frame(ifnet_t ifp, struct secasvar *sav, struct ifnet_keepalive_offload_frame *frame, size_t frame_data_offset);
+void key_init(struct protosw *, struct domain *);
/*
* PF_KEY init
- * setup locks and call raw_init()
+ * setup locks, call raw_init(), and then init timer and associated data
*
*/
void
-key_init(void)
+key_init(struct protosw *pp, struct domain *dp)
{
-
+ static int key_initialized = 0;
int i;
-
+
+ VERIFY((pp->pr_flags & (PR_INITIALIZED | PR_ATTACHED)) == PR_ATTACHED);
+
+ _CASSERT(PFKEY_ALIGN8(sizeof(struct sadb_msg)) <= _MHLEN);
+ _CASSERT(MAX_REPLAY_WINDOWS == MBUF_TC_MAX);
+
+ if (key_initialized) {
+ return;
+ }
+ key_initialized = 1;
+
sadb_mutex_grp_attr = lck_grp_attr_alloc_init();
sadb_mutex_grp = lck_grp_alloc_init("sadb", sadb_mutex_grp_attr);
sadb_mutex_attr = lck_attr_alloc_init();
- if ((sadb_mutex = lck_mtx_alloc_init(sadb_mutex_grp, sadb_mutex_attr)) == NULL) {
- printf("key_init: can't alloc sadb_mutex\n");
- return;
- }
+ lck_mtx_init(sadb_mutex, sadb_mutex_grp, sadb_mutex_attr);
+
+ pfkey_stat_mutex_grp_attr = lck_grp_attr_alloc_init();
+ pfkey_stat_mutex_grp = lck_grp_alloc_init("pfkey_stat", pfkey_stat_mutex_grp_attr);
+ pfkey_stat_mutex_attr = lck_attr_alloc_init();
- for (i = 0; i < SPIHASHSIZE; i++)
+ lck_mtx_init(pfkey_stat_mutex, pfkey_stat_mutex_grp, pfkey_stat_mutex_attr);
+
+ for (i = 0; i < SPIHASHSIZE; i++) {
LIST_INIT(&spihash[i]);
+ }
+
+ raw_init(pp, dp);
+
+ bzero((caddr_t)&key_cb, sizeof(key_cb));
+
+ for (i = 0; i < IPSEC_DIR_MAX; i++) {
+ LIST_INIT(&sptree[i]);
+ }
+ ipsec_policy_count = 0;
+
+ LIST_INIT(&sahtree);
+ LIST_INIT(&custom_sahtree);
+
+ for (i = 0; i <= SADB_SATYPE_MAX; i++) {
+ LIST_INIT(®tree[i]);
+ }
+ ipsec_sav_count = 0;
+
+#ifndef IPSEC_NONBLOCK_ACQUIRE
+ LIST_INIT(&acqtree);
+#endif
+ LIST_INIT(&spacqtree);
+
+ /* system default */
+#if INET
+ ip4_def_policy.policy = IPSEC_POLICY_NONE;
+ ip4_def_policy.refcnt++; /*never reclaim this*/
+#endif
+ ip6_def_policy.policy = IPSEC_POLICY_NONE;
+ ip6_def_policy.refcnt++; /*never reclaim this*/
- raw_init();
+ key_timehandler_running = 0;
+
+ /* initialize key statistics */
+ keystat.getspi_count = 1;
+
+ esp_init();
+#ifndef __APPLE__
+ printf("IPsec: Initialized Security Association Processing.\n");
+#endif
}
+static void
+key_start_timehandler(void)
+{
+ /* must be called while locked */
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ if (key_timehandler_running == 0) {
+ key_timehandler_running = 1;
+ (void)timeout((void *)key_timehandler, (void *)0, hz);
+ }
+
+ /* Turn off the ipsec bypass */
+ if (ipsec_bypass != 0) {
+ ipsec_bypass = 0;
+ }
+}
/* %%% IPsec policy management */
/*
* others: found and return the pointer.
*/
struct secpolicy *
-key_allocsp(spidx, dir)
- struct secpolicyindex *spidx;
- u_int dir;
+key_allocsp(
+ struct secpolicyindex *spidx,
+ u_int dir)
{
struct secpolicy *sp;
struct timeval tv;
- int s;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (spidx == NULL)
+ if (spidx == NULL) {
panic("key_allocsp: NULL pointer is passed.\n");
+ }
/* check direction */
switch (dir) {
/* get a SP entry */
KEYDEBUG(KEYDEBUG_IPSEC_DATA,
- printf("*** objects\n");
- kdebug_secpolicyindex(spidx));
+ printf("*** objects\n");
+ kdebug_secpolicyindex(spidx));
+ lck_mtx_lock(sadb_mutex);
LIST_FOREACH(sp, &sptree[dir], chain) {
KEYDEBUG(KEYDEBUG_IPSEC_DATA,
- printf("*** in SPD\n");
- kdebug_secpolicyindex(&sp->spidx));
+ printf("*** in SPD\n");
+ kdebug_secpolicyindex(&sp->spidx));
+
+ if (sp->state == IPSEC_SPSTATE_DEAD) {
+ continue;
+ }
+
+ /* If the policy is disabled, skip */
+ if (sp->disabled > 0) {
+ continue;
+ }
- if (sp->state == IPSEC_SPSTATE_DEAD)
+ /* If the incoming spidx specifies bound if,
+ * ignore unbound policies*/
+ if (spidx->internal_if != NULL
+ && (sp->spidx.internal_if == NULL || sp->ipsec_if == NULL)) {
continue;
- if (key_cmpspidx_withmask(&sp->spidx, spidx))
+ }
+
+ if (key_cmpspidx_withmask(&sp->spidx, spidx)) {
goto found;
+ }
}
-
+ lck_mtx_unlock(sadb_mutex);
return NULL;
found:
- /* sanity check */
- KEY_CHKSPDIR(sp->spidx.dir, dir, "key_allocsp");
/* found a SPD entry */
microtime(&tv);
sp->lastused = tv.tv_sec;
sp->refcnt++;
- KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
- printf("DP key_allocsp cause refcnt++:%d SP:%p\n",
- sp->refcnt, sp));
+ lck_mtx_unlock(sadb_mutex);
+ /* sanity check */
+ KEY_CHKSPDIR(sp->spidx.dir, dir, "key_allocsp");
+ KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
+ printf("DP key_allocsp cause refcnt++:%d SP:0x%llx\n",
+ sp->refcnt, (uint64_t)VM_KERNEL_ADDRPERM(sp)));
return sp;
}
* XXX slow
*/
struct secpolicy *
-key_gettunnel(osrc, odst, isrc, idst)
- struct sockaddr *osrc, *odst, *isrc, *idst;
+key_gettunnel(
+ struct sockaddr *osrc,
+ struct sockaddr *odst,
+ struct sockaddr *isrc,
+ struct sockaddr *idst)
{
struct secpolicy *sp;
const int dir = IPSEC_DIR_INBOUND;
struct timeval tv;
- int s;
struct ipsecrequest *r1, *r2, *p;
struct sockaddr *os, *od, *is, *id;
struct secpolicyindex spidx;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
if (isrc->sa_family != idst->sa_family) {
ipseclog((LOG_ERR, "protocol family mismatched %d != %d\n.",
- isrc->sa_family, idst->sa_family));
+ isrc->sa_family, idst->sa_family));
return NULL;
}
+ lck_mtx_lock(sadb_mutex);
LIST_FOREACH(sp, &sptree[dir], chain) {
- if (sp->state == IPSEC_SPSTATE_DEAD)
+ if (sp->state == IPSEC_SPSTATE_DEAD) {
continue;
+ }
r1 = r2 = NULL;
for (p = sp->req; p; p = p->next) {
- if (p->saidx.mode != IPSEC_MODE_TUNNEL)
+ if (p->saidx.mode != IPSEC_MODE_TUNNEL) {
continue;
+ }
r1 = r2;
r2 = p;
/* here we look at address matches only */
spidx = sp->spidx;
if (isrc->sa_len > sizeof(spidx.src) ||
- idst->sa_len > sizeof(spidx.dst))
+ idst->sa_len > sizeof(spidx.dst)) {
continue;
+ }
bcopy(isrc, &spidx.src, isrc->sa_len);
bcopy(idst, &spidx.dst, idst->sa_len);
- if (!key_cmpspidx_withmask(&sp->spidx, &spidx))
+ if (!key_cmpspidx_withmask(&sp->spidx, &spidx)) {
continue;
+ }
} else {
is = (struct sockaddr *)&r1->saidx.src;
id = (struct sockaddr *)&r1->saidx.dst;
if (key_sockaddrcmp(is, isrc, 0) ||
- key_sockaddrcmp(id, idst, 0))
+ key_sockaddrcmp(id, idst, 0)) {
continue;
+ }
}
os = (struct sockaddr *)&r2->saidx.src;
od = (struct sockaddr *)&r2->saidx.dst;
if (key_sockaddrcmp(os, osrc, 0) ||
- key_sockaddrcmp(od, odst, 0))
+ key_sockaddrcmp(od, odst, 0)) {
continue;
+ }
goto found;
}
}
-
+ lck_mtx_unlock(sadb_mutex);
return NULL;
found:
microtime(&tv);
sp->lastused = tv.tv_sec;
sp->refcnt++;
+ lck_mtx_unlock(sadb_mutex);
return sp;
}
+struct secasvar *
+key_alloc_outbound_sav_for_interface(ifnet_t interface, int family,
+ struct sockaddr *src,
+ struct sockaddr *dst)
+{
+ struct secashead *sah;
+ struct secasvar *sav;
+ u_int stateidx;
+ u_int state;
+ const u_int *saorder_state_valid;
+ int arraysize;
+ struct sockaddr_in *sin;
+ u_int16_t dstport;
+ bool strict = true;
+
+ if (interface == NULL) {
+ return NULL;
+ }
+
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
+
+ lck_mtx_lock(sadb_mutex);
+
+ do {
+ LIST_FOREACH(sah, &sahtree, chain) {
+ if (sah->state == SADB_SASTATE_DEAD) {
+ continue;
+ }
+ if (sah->ipsec_if == interface &&
+ (family == AF_INET6 || family == AF_INET) &&
+ sah->dir == IPSEC_DIR_OUTBOUND) {
+ if (strict &&
+ sah->saidx.mode == IPSEC_MODE_TRANSPORT &&
+ src != NULL && dst != NULL) {
+ // Validate addresses for transport mode
+ if (key_sockaddrcmp((struct sockaddr *)&sah->saidx.src, src, 0) != 0) {
+ // Source doesn't match
+ continue;
+ }
+
+ if (key_sockaddrcmp((struct sockaddr *)&sah->saidx.dst, dst, 0) != 0) {
+ // Destination doesn't match
+ continue;
+ }
+ }
+
+ /* This SAH is linked to the IPsec interface, and the right family. We found it! */
+ if (key_preferred_oldsa) {
+ saorder_state_valid = saorder_state_valid_prefer_old;
+ arraysize = _ARRAYLEN(saorder_state_valid_prefer_old);
+ } else {
+ saorder_state_valid = saorder_state_valid_prefer_new;
+ arraysize = _ARRAYLEN(saorder_state_valid_prefer_new);
+ }
+
+ sin = (struct sockaddr_in *)&sah->saidx.dst;
+ dstport = sin->sin_port;
+ if (sah->saidx.mode == IPSEC_MODE_TRANSPORT) {
+ sin->sin_port = IPSEC_PORT_ANY;
+ }
+
+ for (stateidx = 0; stateidx < arraysize; stateidx++) {
+ state = saorder_state_valid[stateidx];
+ sav = key_do_allocsa_policy(sah, state, dstport);
+ if (sav != NULL) {
+ lck_mtx_unlock(sadb_mutex);
+ return sav;
+ }
+ }
+
+ break;
+ }
+ }
+ if (strict) {
+ // If we didn't find anything, try again without strict
+ strict = false;
+ } else {
+ // We already were on the second try, bail
+ break;
+ }
+ } while (true);
+
+ lck_mtx_unlock(sadb_mutex);
+ return NULL;
+}
+
/*
* allocating an SA entry for an *OUTBOUND* packet.
* checking each request entries in SP, and acquire an SA if need.
* ENOENT: policy may be valid, but SA with REQUIRE is on acquiring.
*/
int
-key_checkrequest(isr, saidx)
- struct ipsecrequest *isr;
- struct secasindex *saidx;
+key_checkrequest(
+ struct ipsecrequest *isr,
+ struct secasindex *saidx,
+ struct secasvar **sav)
{
u_int level;
int error;
+ struct sockaddr_in *sin;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
+
+ *sav = NULL;
/* sanity check */
- if (isr == NULL || saidx == NULL)
+ if (isr == NULL || saidx == NULL) {
panic("key_checkrequest: NULL pointer is passed.\n");
+ }
/* check mode */
switch (saidx->mode) {
/* get current level */
level = ipsec_get_reqlevel(isr);
-#if 0
- /*
- * We do allocate new SA only if the state of SA in the holder is
- * SADB_SASTATE_DEAD. The SA for outbound must be the oldest.
- */
- if (isr->sav != NULL) {
- if (isr->sav->sah == NULL)
- panic("key_checkrequest: sah is null.\n");
- if (isr->sav == (struct secasvar *)LIST_FIRST(
- &isr->sav->sah->savtree[SADB_SASTATE_DEAD])) {
- KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
- printf("DP checkrequest calls free SA:%p\n",
- isr->sav));
- key_freesav(isr->sav);
- isr->sav = NULL;
- }
- }
-#else
- /*
- * we free any SA stashed in the IPsec request because a different
- * SA may be involved each time this request is checked, either
- * because new SAs are being configured, or this request is
- * associated with an unconnected datagram socket, or this request
- * is associated with a system default policy.
- *
- * The operation may have negative impact to performance. We may
- * want to check cached SA carefully, rather than picking new SA
- * every time.
- */
- if (isr->sav != NULL) {
- key_freesav(isr->sav);
- isr->sav = NULL;
- }
-#endif
/*
- * new SA allocation if no SA found.
* key_allocsa_policy should allocate the oldest SA available.
* See key_do_allocsa_policy(), and draft-jenkins-ipsec-rekeying-03.txt.
*/
- if (isr->sav == NULL)
- isr->sav = key_allocsa_policy(saidx);
+ if (*sav == NULL) {
+ *sav = key_allocsa_policy(saidx);
+ }
/* When there is SA. */
- if (isr->sav != NULL)
+ if (*sav != NULL) {
return 0;
+ }
- /* there is no SA */
+ /* There is no SA.
+ *
+ * Remove dst port - used for special natt support - don't call
+ * key_acquire with it.
+ */
+ if (saidx->mode == IPSEC_MODE_TRANSPORT) {
+ sin = (struct sockaddr_in *)&saidx->dst;
+ sin->sin_port = IPSEC_PORT_ANY;
+ }
if ((error = key_acquire(saidx, isr->sp)) != 0) {
/* XXX What should I do ? */
ipseclog((LOG_DEBUG, "key_checkrequest: error %d returned "
- "from key_acquire.\n", error));
+ "from key_acquire.\n", error));
return error;
}
* OUT: NULL: not found.
* others: found and return the pointer.
*/
-static struct secasvar *
-key_allocsa_policy(saidx)
- struct secasindex *saidx;
+u_int32_t sah_search_calls = 0;
+u_int32_t sah_search_count = 0;
+struct secasvar *
+key_allocsa_policy(
+ struct secasindex *saidx)
{
struct secashead *sah;
struct secasvar *sav;
u_int stateidx, state;
const u_int *saorder_state_valid;
int arraysize;
+ struct sockaddr_in *sin;
+ u_int16_t dstport;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
+ lck_mtx_lock(sadb_mutex);
+ sah_search_calls++;
LIST_FOREACH(sah, &sahtree, chain) {
- if (sah->state == SADB_SASTATE_DEAD)
+ sah_search_count++;
+ if (sah->state == SADB_SASTATE_DEAD) {
continue;
- if (key_cmpsaidx(&sah->saidx, saidx, CMP_MODE_REQID))
+ }
+ if (key_cmpsaidx(&sah->saidx, saidx, CMP_MODE | CMP_REQID)) {
goto found;
+ }
}
-
+ lck_mtx_unlock(sadb_mutex);
return NULL;
- found:
+found:
/*
* search a valid state list for outbound packet.
arraysize = _ARRAYLEN(saorder_state_valid_prefer_new);
}
- for (stateidx = 0; stateidx < arraysize; stateidx++) {
+ sin = (struct sockaddr_in *)&saidx->dst;
+ dstport = sin->sin_port;
+ if (saidx->mode == IPSEC_MODE_TRANSPORT) {
+ sin->sin_port = IPSEC_PORT_ANY;
+ }
+
+ for (stateidx = 0; stateidx < arraysize; stateidx++) {
state = saorder_state_valid[stateidx];
- sav = key_do_allocsa_policy(sah, state);
- if (sav != NULL)
+ sav = key_do_allocsa_policy(sah, state, dstport);
+ if (sav != NULL) {
+ lck_mtx_unlock(sadb_mutex);
return sav;
+ }
}
-
+ lck_mtx_unlock(sadb_mutex);
return NULL;
}
+static void
+key_send_delete(struct secasvar *sav)
+{
+ struct mbuf *m, *result;
+ u_int8_t satype;
+
+ key_sa_chgstate(sav, SADB_SASTATE_DEAD);
+
+ if ((satype = key_proto2satype(sav->sah->saidx.proto)) == 0) {
+ panic("key_do_allocsa_policy: invalid proto is passed.\n");
+ }
+
+ m = key_setsadbmsg(SADB_DELETE, 0,
+ satype, 0, 0, (u_int16_t)(sav->refcnt - 1));
+ if (!m) {
+ goto msgfail;
+ }
+ result = m;
+
+ /* set sadb_address for saidx's. */
+ m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
+ (struct sockaddr *)&sav->sah->saidx.src,
+ sav->sah->saidx.src.ss_len << 3,
+ IPSEC_ULPROTO_ANY);
+ if (!m) {
+ goto msgfail;
+ }
+ m_cat(result, m);
+
+ /* set sadb_address for saidx's. */
+ m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
+ (struct sockaddr *)&sav->sah->saidx.dst,
+ sav->sah->saidx.src.ss_len << 3,
+ IPSEC_ULPROTO_ANY);
+ if (!m) {
+ goto msgfail;
+ }
+ m_cat(result, m);
+
+ /* create SA extension */
+ m = key_setsadbsa(sav);
+ if (!m) {
+ goto msgfail;
+ }
+ m_cat(result, m);
+
+ if (result->m_len < sizeof(struct sadb_msg)) {
+ result = m_pullup(result,
+ sizeof(struct sadb_msg));
+ if (result == NULL) {
+ goto msgfail;
+ }
+ }
+
+ result->m_pkthdr.len = 0;
+ for (m = result; m; m = m->m_next) {
+ result->m_pkthdr.len += m->m_len;
+ }
+
+ VERIFY(PFKEY_UNIT64(result->m_pkthdr.len) <= UINT16_MAX);
+ mtod(result, struct sadb_msg *)->sadb_msg_len =
+ (u_int16_t)PFKEY_UNIT64(result->m_pkthdr.len);
+
+ if (key_sendup_mbuf(NULL, result,
+ KEY_SENDUP_REGISTERED)) {
+ goto msgfail;
+ }
+msgfail:
+ key_freesav(sav, KEY_SADB_LOCKED);
+}
+
/*
* searching SAD with direction, protocol, mode and state.
* called by key_allocsa_policy().
* others : found, pointer to a SA.
*/
static struct secasvar *
-key_do_allocsa_policy(sah, state)
- struct secashead *sah;
- u_int state;
+key_do_allocsa_policy(
+ struct secashead *sah,
+ u_int state,
+ u_int16_t dstport)
{
- struct secasvar *sav, *nextsav, *candidate, *d;
+ struct secasvar *sav, *nextsav, *candidate, *natt_candidate, *no_natt_candidate, *d;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
- /* initilize */
+ /* initialize */
candidate = NULL;
+ natt_candidate = NULL;
+ no_natt_candidate = NULL;
for (sav = LIST_FIRST(&sah->savtree[state]);
- sav != NULL;
- sav = nextsav) {
-
+ sav != NULL;
+ sav = nextsav) {
nextsav = LIST_NEXT(sav, chain);
/* sanity check */
KEY_CHKSASTATE(sav->state, state, "key_do_allocsa_policy");
- /* initialize */
- if (candidate == NULL) {
- candidate = sav;
+ if (sah->saidx.mode == IPSEC_MODE_TUNNEL && dstport &&
+ ((sav->flags & SADB_X_EXT_NATT) != 0) &&
+ ntohs(dstport) != sav->remote_ike_port) {
continue;
}
+ if (sah->saidx.mode == IPSEC_MODE_TRANSPORT &&
+ ((sav->flags & SADB_X_EXT_NATT_MULTIPLEUSERS) != 0) &&
+ ntohs(dstport) != sav->remote_ike_port) {
+ continue; /* skip this one - not a match - or not UDP */
+ }
+ if ((sah->saidx.mode == IPSEC_MODE_TUNNEL &&
+ ((sav->flags & SADB_X_EXT_NATT) != 0)) ||
+ (sah->saidx.mode == IPSEC_MODE_TRANSPORT &&
+ ((sav->flags & SADB_X_EXT_NATT_MULTIPLEUSERS) != 0))) {
+ if (natt_candidate == NULL) {
+ natt_candidate = sav;
+ continue;
+ } else {
+ candidate = natt_candidate;
+ }
+ } else {
+ if (no_natt_candidate == NULL) {
+ no_natt_candidate = sav;
+ continue;
+ } else {
+ candidate = no_natt_candidate;
+ }
+ }
+
/* Which SA is the better ? */
/* sanity check 2 */
- if (candidate->lft_c == NULL || sav->lft_c == NULL)
+ if (candidate->lft_c == NULL || sav->lft_c == NULL) {
panic("key_do_allocsa_policy: "
- "lifetime_current is NULL.\n");
+ "lifetime_current is NULL.\n");
+ }
/* What the best method is to compare ? */
if (key_preferred_oldsa) {
if (candidate->lft_c->sadb_lifetime_addtime >
- sav->lft_c->sadb_lifetime_addtime) {
- candidate = sav;
+ sav->lft_c->sadb_lifetime_addtime) {
+ if ((sav->flags & SADB_X_EXT_NATT_MULTIPLEUSERS) != 0) {
+ natt_candidate = sav;
+ } else {
+ no_natt_candidate = sav;
+ }
}
continue;
/*NOTREACHED*/
/* prefered new sa rather than old sa */
if (candidate->lft_c->sadb_lifetime_addtime <
- sav->lft_c->sadb_lifetime_addtime) {
+ sav->lft_c->sadb_lifetime_addtime) {
d = candidate;
- candidate = sav;
- } else
- d = sav;
+ if ((sah->saidx.mode == IPSEC_MODE_TUNNEL &&
+ ((sav->flags & SADB_X_EXT_NATT) != 0)) ||
+ (sah->saidx.mode == IPSEC_MODE_TRANSPORT &&
+ ((sav->flags & SADB_X_EXT_NATT_MULTIPLEUSERS) != 0))) {
+ natt_candidate = sav;
+ } else {
+ no_natt_candidate = sav;
+ }
+ } else {
+ d = sav;
+ }
/*
* prepared to delete the SA when there is more
* permanent.
*/
if (d->lft_c->sadb_lifetime_addtime != 0) {
- struct mbuf *m, *result;
-
- key_sa_chgstate(d, SADB_SASTATE_DEAD);
-
- m = key_setsadbmsg(SADB_DELETE, 0,
- d->sah->saidx.proto, 0, 0, d->refcnt - 1);
- if (!m)
- goto msgfail;
- result = m;
-
- /* set sadb_address for saidx's. */
- m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
- (struct sockaddr *)&d->sah->saidx.src,
- d->sah->saidx.src.ss_len << 3,
- IPSEC_ULPROTO_ANY);
- if (!m)
- goto msgfail;
- m_cat(result, m);
-
- /* set sadb_address for saidx's. */
- m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
- (struct sockaddr *)&d->sah->saidx.src,
- d->sah->saidx.src.ss_len << 3,
- IPSEC_ULPROTO_ANY);
- if (!m)
- goto msgfail;
- m_cat(result, m);
-
- /* create SA extension */
- m = key_setsadbsa(d);
- if (!m)
- goto msgfail;
- m_cat(result, m);
-
- if (result->m_len < sizeof(struct sadb_msg)) {
- result = m_pullup(result,
- sizeof(struct sadb_msg));
- if (result == NULL)
- goto msgfail;
- }
-
- result->m_pkthdr.len = 0;
- for (m = result; m; m = m->m_next)
- result->m_pkthdr.len += m->m_len;
- mtod(result, struct sadb_msg *)->sadb_msg_len =
- PFKEY_UNIT64(result->m_pkthdr.len);
-
- if (key_sendup_mbuf(NULL, result,
- KEY_SENDUP_REGISTERED))
- goto msgfail;
- msgfail:
- key_freesav(d);
+ key_send_delete(d);
}
}
+ /* choose latest if both types present */
+ if (natt_candidate == NULL) {
+ candidate = no_natt_candidate;
+ } else if (no_natt_candidate == NULL) {
+ candidate = natt_candidate;
+ } else if (sah->saidx.mode == IPSEC_MODE_TUNNEL && dstport) {
+ candidate = natt_candidate;
+ } else if (natt_candidate->lft_c->sadb_lifetime_addtime >
+ no_natt_candidate->lft_c->sadb_lifetime_addtime) {
+ candidate = natt_candidate;
+ } else {
+ candidate = no_natt_candidate;
+ }
+
if (candidate) {
candidate->refcnt++;
KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
- printf("DP allocsa_policy cause "
- "refcnt++:%d SA:%p\n",
- candidate->refcnt, candidate));
+ printf("DP allocsa_policy cause "
+ "refcnt++:%d SA:0x%llx\n", candidate->refcnt,
+ (uint64_t)VM_KERNEL_ADDRPERM(candidate)));
}
return candidate;
}
* keep source address in IPsec SA. We see a tricky situation here.
*/
struct secasvar *
-key_allocsa(family, src, dst, proto, spi)
- u_int family, proto;
- caddr_t src, dst;
- u_int32_t spi;
+key_allocsa(
+ u_int family,
+ caddr_t src,
+ caddr_t dst,
+ u_int proto,
+ u_int32_t spi)
+{
+ return key_allocsa_extended(family, src, dst, proto, spi, NULL);
+}
+
+struct secasvar *
+key_allocsa_extended(u_int family,
+ caddr_t src,
+ caddr_t dst,
+ u_int proto,
+ u_int32_t spi,
+ ifnet_t interface)
{
struct secasvar *sav, *match;
u_int stateidx, state, tmpidx, matchidx;
struct sockaddr_in sin;
struct sockaddr_in6 sin6;
- int s;
const u_int *saorder_state_valid;
int arraysize;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (src == NULL || dst == NULL)
+ if (src == NULL || dst == NULL) {
panic("key_allocsa: NULL pointer is passed.\n");
+ }
/*
* when both systems employ similar strategy to use a SA.
*/
match = NULL;
matchidx = arraysize;
+ lck_mtx_lock(sadb_mutex);
LIST_FOREACH(sav, &spihash[SPIHASH(spi)], spihash) {
- if (sav->spi != spi)
+ if (sav->spi != spi) {
+ continue;
+ }
+ if (interface != NULL &&
+ sav->sah->ipsec_if != interface) {
continue;
- if (proto != sav->sah->saidx.proto)
+ }
+ if (proto != sav->sah->saidx.proto) {
continue;
+ }
if (family != sav->sah->saidx.src.ss_family ||
- family != sav->sah->saidx.dst.ss_family)
+ family != sav->sah->saidx.dst.ss_family) {
continue;
+ }
tmpidx = arraysize;
for (stateidx = 0; stateidx < matchidx; stateidx++) {
state = saorder_state_valid[stateidx];
break;
}
}
- if (tmpidx >= matchidx)
- continue;
-
-#if 0 /* don't check src */
- /* check src address */
- switch (family) {
- case AF_INET:
- bzero(&sin, sizeof(sin));
- sin.sin_family = AF_INET;
- sin.sin_len = sizeof(sin);
- bcopy(src, &sin.sin_addr,
- sizeof(sin.sin_addr));
- if (key_sockaddrcmp((struct sockaddr*)&sin,
- (struct sockaddr *)&sav->sah->saidx.src, 0) != 0)
- continue;
- break;
- case AF_INET6:
- bzero(&sin6, sizeof(sin6));
- sin6.sin6_family = AF_INET6;
- sin6.sin6_len = sizeof(sin6);
- bcopy(src, &sin6.sin6_addr,
- sizeof(sin6.sin6_addr));
- if (IN6_IS_SCOPE_LINKLOCAL(&sin6.sin6_addr)) {
- /* kame fake scopeid */
- sin6.sin6_scope_id =
- ntohs(sin6.sin6_addr.s6_addr16[1]);
- sin6.sin6_addr.s6_addr16[1] = 0;
- }
- if (key_sockaddrcmp((struct sockaddr*)&sin6,
- (struct sockaddr *)&sav->sah->saidx.src, 0) != 0)
- continue;
- break;
- default:
- ipseclog((LOG_DEBUG, "key_allocsa: "
- "unknown address family=%d.\n",
- family));
+ if (tmpidx >= matchidx) {
continue;
}
-#endif
/* check dst address */
switch (family) {
case AF_INET:
bcopy(dst, &sin.sin_addr,
sizeof(sin.sin_addr));
if (key_sockaddrcmp((struct sockaddr*)&sin,
- (struct sockaddr *)&sav->sah->saidx.dst, 0) != 0)
+ (struct sockaddr *)&sav->sah->saidx.dst, 0) != 0) {
continue;
+ }
break;
case AF_INET6:
- bzero(&sin6, sizeof(sin6));
- sin6.sin6_family = AF_INET6;
- sin6.sin6_len = sizeof(sin6);
- bcopy(dst, &sin6.sin6_addr,
- sizeof(sin6.sin6_addr));
- if (IN6_IS_SCOPE_LINKLOCAL(&sin6.sin6_addr)) {
- /* kame fake scopeid */
- sin6.sin6_scope_id =
- ntohs(sin6.sin6_addr.s6_addr16[1]);
- sin6.sin6_addr.s6_addr16[1] = 0;
- }
- if (key_sockaddrcmp((struct sockaddr*)&sin6,
- (struct sockaddr *)&sav->sah->saidx.dst, 0) != 0)
+ bzero(&sin6, sizeof(sin6));
+ sin6.sin6_family = AF_INET6;
+ sin6.sin6_len = sizeof(sin6);
+ bcopy(dst, &sin6.sin6_addr,
+ sizeof(sin6.sin6_addr));
+ if (IN6_IS_SCOPE_LINKLOCAL(&sin6.sin6_addr)) {
+ /* kame fake scopeid */
+ sin6.sin6_scope_id =
+ ntohs(sin6.sin6_addr.s6_addr16[1]);
+ sin6.sin6_addr.s6_addr16[1] = 0;
+ }
+ if (key_sockaddrcmp((struct sockaddr*)&sin6,
+ (struct sockaddr *)&sav->sah->saidx.dst, 0) != 0) {
continue;
+ }
break;
default:
ipseclog((LOG_DEBUG, "key_allocsa: "
match = sav;
matchidx = tmpidx;
}
- if (match)
+ if (match) {
goto found;
+ }
/* not found */
+ lck_mtx_unlock(sadb_mutex);
return NULL;
found:
- match->refcnt++;
+ match->refcnt++;
+ lck_mtx_unlock(sadb_mutex);
KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
- printf("DP allocsa cause refcnt++:%d SA:%p\n",
- match->refcnt, match));
+ printf("DP allocsa cause refcnt++:%d SA:0x%llx\n",
+ match->refcnt, (uint64_t)VM_KERNEL_ADDRPERM(match)));
return match;
}
/*
- * Must be called after calling key_allocsp().
- * For both the packet without socket and key_freeso().
+ * This function checks whether a UDP packet with a random local port
+ * and a remote port of 4500 matches an SA in the kernel. If does match,
+ * send the packet to the ESP engine. If not, send the packet to the UDP protocol.
*/
-void
-key_freesp(sp)
- struct secpolicy *sp;
+bool
+key_checksa_present(u_int family,
+ caddr_t local_addr,
+ caddr_t remote_addr,
+ u_int16_t local_port,
+ u_int16_t remote_port)
{
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (sp == NULL)
- panic("key_freesp: NULL pointer is passed.\n");
+ if (local_addr == NULL || remote_addr == NULL) {
+ panic("key_allocsa: NULL pointer is passed.\n");
+ }
- sp->refcnt--;
- KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
- printf("DP freesp cause refcnt--:%d SP:%p\n",
- sp->refcnt, sp));
+ /*
+ * searching SAD.
+ * XXX: to be checked internal IP header somewhere. Also when
+ * IPsec tunnel packet is received. But ESP tunnel mode is
+ * encrypted so we can't check internal IP header.
+ */
+ /*
+ * search a valid state list for inbound packet.
+ * the search order is not important.
+ */
+ struct secashead *sah = NULL;
+ bool found_sa = false;
- if (sp->refcnt == 0)
- key_delsp(sp);
+ lck_mtx_lock(sadb_mutex);
+ LIST_FOREACH(sah, &sahtree, chain) {
+ if (sah->state == SADB_SASTATE_DEAD) {
+ continue;
+ }
- return;
-}
+ if (sah->dir != IPSEC_DIR_OUTBOUND) {
+ continue;
+ }
-#if 0
-/*
- * Must be called after calling key_allocsp().
- * For the packet with socket.
- */
-void
-key_freeso(so)
- struct socket *so;
-{
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ if (family != sah->saidx.src.ss_family) {
+ continue;
+ }
- /* sanity check */
- if (so == NULL)
- panic("key_freeso: NULL pointer is passed.\n");
+ struct sockaddr_in src_in = {};
+ struct sockaddr_in6 src_in6 = {};
- switch (so->so_proto->pr_domain->dom_family) {
-#if INET
- case PF_INET:
- {
- struct inpcb *pcb = sotoinpcb(so);
+ /* check src address */
+ switch (family) {
+ case AF_INET:
+ src_in.sin_family = AF_INET;
+ src_in.sin_len = sizeof(src_in);
+ memcpy(&src_in.sin_addr, local_addr, sizeof(src_in.sin_addr));
+ if (key_sockaddrcmp((struct sockaddr*)&src_in,
+ (struct sockaddr *)&sah->saidx.src, 0) != 0) {
+ continue;
+ }
+ break;
+ case AF_INET6:
+ src_in6.sin6_family = AF_INET6;
+ src_in6.sin6_len = sizeof(src_in6);
+ memcpy(&src_in6.sin6_addr, local_addr, sizeof(src_in6.sin6_addr));
+ if (IN6_IS_SCOPE_LINKLOCAL(&src_in6.sin6_addr)) {
+ /* kame fake scopeid */
+ src_in6.sin6_scope_id =
+ ntohs(src_in6.sin6_addr.s6_addr16[1]);
+ src_in6.sin6_addr.s6_addr16[1] = 0;
+ }
+ if (key_sockaddrcmp((struct sockaddr*)&src_in6,
+ (struct sockaddr *)&sah->saidx.src, 0) != 0) {
+ continue;
+ }
+ break;
+ default:
+ ipseclog((LOG_DEBUG, "key_checksa_present: "
+ "unknown address family=%d.\n",
+ family));
+ continue;
+ }
- /* Does it have a PCB ? */
- if (pcb == NULL || pcb->inp_sp == NULL)
- return;
- key_freesp_so(&pcb->inp_sp->sp_in);
- key_freesp_so(&pcb->inp_sp->sp_out);
- }
- break;
-#endif
-#if INET6
- case PF_INET6:
- {
-#if HAVE_NRL_INPCB
- struct inpcb *pcb = sotoinpcb(so);
-
- /* Does it have a PCB ? */
- if (pcb == NULL || pcb->inp_sp == NULL)
- return;
- key_freesp_so(&pcb->inp_sp->sp_in);
- key_freesp_so(&pcb->inp_sp->sp_out);
-#else
- struct in6pcb *pcb = sotoin6pcb(so);
+ struct sockaddr_in dest_in = {};
+ struct sockaddr_in6 dest_in6 = {};
- /* Does it have a PCB ? */
- if (pcb == NULL || pcb->in6p_sp == NULL)
- return;
- key_freesp_so(&pcb->in6p_sp->sp_in);
- key_freesp_so(&pcb->in6p_sp->sp_out);
-#endif
- }
- break;
-#endif /* INET6 */
- default:
- ipseclog((LOG_DEBUG, "key_freeso: unknown address family=%d.\n",
- so->so_proto->pr_domain->dom_family));
- return;
- }
+ /* check dst address */
+ switch (family) {
+ case AF_INET:
+ dest_in.sin_family = AF_INET;
+ dest_in.sin_len = sizeof(dest_in);
+ memcpy(&dest_in.sin_addr, remote_addr, sizeof(dest_in.sin_addr));
+ if (key_sockaddrcmp((struct sockaddr*)&dest_in,
+ (struct sockaddr *)&sah->saidx.dst, 0) != 0) {
+ continue;
+ }
- return;
-}
-#endif
+ break;
+ case AF_INET6:
+ dest_in6.sin6_family = AF_INET6;
+ dest_in6.sin6_len = sizeof(dest_in6);
+ memcpy(&dest_in6.sin6_addr, remote_addr, sizeof(dest_in6.sin6_addr));
+ if (IN6_IS_SCOPE_LINKLOCAL(&dest_in6.sin6_addr)) {
+ /* kame fake scopeid */
+ dest_in6.sin6_scope_id =
+ ntohs(dest_in6.sin6_addr.s6_addr16[1]);
+ dest_in6.sin6_addr.s6_addr16[1] = 0;
+ }
+ if (key_sockaddrcmp((struct sockaddr*)&dest_in6,
+ (struct sockaddr *)&sah->saidx.dst, 0) != 0) {
+ continue;
+ }
-static void
-key_freesp_so(sp)
- struct secpolicy **sp;
-{
+ break;
+ default:
+ ipseclog((LOG_DEBUG, "key_checksa_present: "
+ "unknown address family=%d.\n", family));
+ continue;
+ }
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ struct secasvar *nextsav = NULL;
+ for (u_int stateidx = 0; stateidx < _ARRAYLEN(saorder_state_alive); stateidx++) {
+ u_int state = saorder_state_alive[stateidx];
+ for (struct secasvar *sav = LIST_FIRST(&sah->savtree[state]); sav != NULL; sav = nextsav) {
+ nextsav = LIST_NEXT(sav, chain);
+ /* sanity check */
+ if (sav->state != state) {
+ ipseclog((LOG_DEBUG, "key_checksa_present: "
+ "invalid sav->state "
+ "(state: %d SA: %d)\n",
+ state, sav->state));
+ continue;
+ }
- /* sanity check */
- if (sp == NULL || *sp == NULL)
- panic("key_freesp_so: sp == NULL\n");
+ if (sav->remote_ike_port != ntohs(remote_port)) {
+ continue;
+ }
- switch ((*sp)->policy) {
- case IPSEC_POLICY_IPSEC:
- KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
- printf("DP freeso calls free SP:%p\n", *sp));
- key_freesp(*sp);
- *sp = NULL;
- break;
- case IPSEC_POLICY_ENTRUST:
- case IPSEC_POLICY_BYPASS:
- return;
- default:
- panic("key_freesp_so: Invalid policy found %d", (*sp)->policy);
+ if (sav->natt_encapsulated_src_port != local_port) {
+ continue;
+ }
+ found_sa = true;;
+ break;
+ }
+ }
}
- return;
+ /* not found */
+ lck_mtx_unlock(sadb_mutex);
+ return found_sa;
}
-/*
- * Must be called after calling key_allocsa().
- * This function is called by key_freesp() to free some SA allocated
- * for a policy.
- */
-void
-key_freesav(sav)
- struct secasvar *sav;
+u_int16_t
+key_natt_get_translated_port(
+ struct secasvar *outsav)
{
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ struct secasindex saidx;
+ struct secashead *sah;
+ u_int stateidx, state;
+ const u_int *saorder_state_valid;
+ int arraysize;
- /* sanity check */
- if (sav == NULL)
- panic("key_freesav: NULL pointer is passed.\n");
+ /* get sa for incoming */
+ saidx.mode = outsav->sah->saidx.mode;
+ saidx.reqid = 0;
+ saidx.proto = outsav->sah->saidx.proto;
+ bcopy(&outsav->sah->saidx.src, &saidx.dst, sizeof(struct sockaddr_in));
+ bcopy(&outsav->sah->saidx.dst, &saidx.src, sizeof(struct sockaddr_in));
- sav->refcnt--;
- KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
- printf("DP freesav cause refcnt--:%d SA:%p SPI %u\n",
- sav->refcnt, sav, (u_int32_t)ntohl(sav->spi)));
+ lck_mtx_lock(sadb_mutex);
+ LIST_FOREACH(sah, &sahtree, chain) {
+ if (sah->state == SADB_SASTATE_DEAD) {
+ continue;
+ }
+ if (key_cmpsaidx(&sah->saidx, &saidx, CMP_MODE)) {
+ goto found;
+ }
+ }
+ lck_mtx_unlock(sadb_mutex);
+ return 0;
- if (sav->refcnt == 0)
- key_delsav(sav);
+found:
+ /*
+ * Found sah - now go thru list of SAs and find
+ * matching remote ike port. If found - set
+ * sav->natt_encapsulated_src_port and return the port.
+ */
+ /*
+ * search a valid state list for outbound packet.
+ * This search order is important.
+ */
+ if (key_preferred_oldsa) {
+ saorder_state_valid = saorder_state_valid_prefer_old;
+ arraysize = _ARRAYLEN(saorder_state_valid_prefer_old);
+ } else {
+ saorder_state_valid = saorder_state_valid_prefer_new;
+ arraysize = _ARRAYLEN(saorder_state_valid_prefer_new);
+ }
- return;
+ for (stateidx = 0; stateidx < arraysize; stateidx++) {
+ state = saorder_state_valid[stateidx];
+ if (key_do_get_translated_port(sah, outsav, state)) {
+ lck_mtx_unlock(sadb_mutex);
+ return outsav->natt_encapsulated_src_port;
+ }
+ }
+ lck_mtx_unlock(sadb_mutex);
+ return 0;
}
-/* %%% SPD management */
-/*
- * free security policy entry.
- */
-static void
-key_delsp(sp)
- struct secpolicy *sp;
+static int
+key_do_get_translated_port(
+ struct secashead *sah,
+ struct secasvar *outsav,
+ u_int state)
{
- int s;
+ struct secasvar *currsav, *nextsav, *candidate;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
- /* sanity check */
- if (sp == NULL)
- panic("key_delsp: NULL pointer is passed.\n");
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
- sp->state = IPSEC_SPSTATE_DEAD;
+ /* initilize */
+ candidate = NULL;
- if (sp->refcnt > 0)
- return; /* can't free */
+ for (currsav = LIST_FIRST(&sah->savtree[state]);
+ currsav != NULL;
+ currsav = nextsav) {
+ nextsav = LIST_NEXT(currsav, chain);
- s = splnet(); /*called from softclock()*/
- /* remove from SP index */
- if (__LIST_CHAINED(sp))
- LIST_REMOVE(sp, chain);
+ /* sanity check */
+ KEY_CHKSASTATE(currsav->state, state, "key_do_get_translated_port");
- {
- struct ipsecrequest *isr = sp->req, *nextisr;
+ if ((currsav->flags & SADB_X_EXT_NATT_MULTIPLEUSERS) == 0 ||
+ currsav->remote_ike_port != outsav->remote_ike_port) {
+ continue;
+ }
- while (isr != NULL) {
- if (isr->sav != NULL) {
- KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
- printf("DP delsp calls free SA:%p\n",
- isr->sav));
- key_freesav(isr->sav);
- isr->sav = NULL;
+ if (candidate == NULL) {
+ candidate = currsav;
+ continue;
}
- nextisr = isr->next;
- KFREE(isr);
- isr = nextisr;
- }
- }
+ /* Which SA is the better ? */
- keydb_delsecpolicy(sp);
+ /* sanity check 2 */
+ if (candidate->lft_c == NULL || currsav->lft_c == NULL) {
+ panic("key_do_get_translated_port: "
+ "lifetime_current is NULL.\n");
+ }
- splx(s);
+ /* What the best method is to compare ? */
+ if (key_preferred_oldsa) {
+ if (candidate->lft_c->sadb_lifetime_addtime >
+ currsav->lft_c->sadb_lifetime_addtime) {
+ candidate = currsav;
+ }
+ continue;
+ /*NOTREACHED*/
+ }
- return;
-}
+ /* prefered new sa rather than old sa */
+ if (candidate->lft_c->sadb_lifetime_addtime <
+ currsav->lft_c->sadb_lifetime_addtime) {
+ candidate = currsav;
+ }
+ }
-/*
- * search SPD
+ if (candidate) {
+ outsav->natt_encapsulated_src_port = candidate->natt_encapsulated_src_port;
+ return 1;
+ }
+
+ return 0;
+}
+
+/*
+ * Must be called after calling key_allocsp().
+ */
+void
+key_freesp(
+ struct secpolicy *sp,
+ int locked)
+{
+ /* sanity check */
+ if (sp == NULL) {
+ panic("key_freesp: NULL pointer is passed.\n");
+ }
+
+ if (!locked) {
+ lck_mtx_lock(sadb_mutex);
+ } else {
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ }
+ sp->refcnt--;
+ KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
+ printf("DP freesp cause refcnt--:%d SP:0x%llx\n",
+ sp->refcnt, (uint64_t)VM_KERNEL_ADDRPERM(sp)));
+
+ if (sp->refcnt == 0) {
+ key_delsp(sp);
+ }
+ if (!locked) {
+ lck_mtx_unlock(sadb_mutex);
+ }
+ return;
+}
+
+/*
+ * Must be called after calling key_allocsa().
+ * This function is called by key_freesp() to free some SA allocated
+ * for a policy.
+ */
+void
+key_freesav(
+ struct secasvar *sav,
+ int locked)
+{
+ /* sanity check */
+ if (sav == NULL) {
+ panic("key_freesav: NULL pointer is passed.\n");
+ }
+
+ if (!locked) {
+ lck_mtx_lock(sadb_mutex);
+ } else {
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ }
+ sav->refcnt--;
+ KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
+ printf("DP freesav cause refcnt--:%d SA:0x%llx SPI %u\n",
+ sav->refcnt, (uint64_t)VM_KERNEL_ADDRPERM(sav),
+ (u_int32_t)ntohl(sav->spi)));
+
+ if (sav->refcnt == 0) {
+ key_delsav(sav);
+ }
+ if (!locked) {
+ lck_mtx_unlock(sadb_mutex);
+ }
+ return;
+}
+
+/* %%% SPD management */
+/*
+ * free security policy entry.
+ */
+static void
+key_delsp(
+ struct secpolicy *sp)
+{
+ /* sanity check */
+ if (sp == NULL) {
+ panic("key_delsp: NULL pointer is passed.\n");
+ }
+
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ sp->state = IPSEC_SPSTATE_DEAD;
+
+ if (sp->refcnt > 0) {
+ return; /* can't free */
+ }
+ /* remove from SP index */
+ if (__LIST_CHAINED(sp)) {
+ LIST_REMOVE(sp, chain);
+ ipsec_policy_count--;
+ }
+
+ if (sp->spidx.internal_if) {
+ ifnet_release(sp->spidx.internal_if);
+ sp->spidx.internal_if = NULL;
+ }
+
+ if (sp->ipsec_if) {
+ ifnet_release(sp->ipsec_if);
+ sp->ipsec_if = NULL;
+ }
+
+ if (sp->outgoing_if) {
+ ifnet_release(sp->outgoing_if);
+ sp->outgoing_if = NULL;
+ }
+
+ {
+ struct ipsecrequest *isr = sp->req, *nextisr;
+
+ while (isr != NULL) {
+ nextisr = isr->next;
+ KFREE(isr);
+ isr = nextisr;
+ }
+ }
+ keydb_delsecpolicy(sp);
+
+ return;
+}
+
+/*
+ * search SPD
* OUT: NULL : not found
* others : found, pointer to a SP.
*/
static struct secpolicy *
-key_getsp(spidx)
- struct secpolicyindex *spidx;
+key_getsp(
+ struct secpolicyindex *spidx)
{
struct secpolicy *sp;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
/* sanity check */
- if (spidx == NULL)
+ if (spidx == NULL) {
panic("key_getsp: NULL pointer is passed.\n");
+ }
LIST_FOREACH(sp, &sptree[spidx->dir], chain) {
- if (sp->state == IPSEC_SPSTATE_DEAD)
+ if (sp->state == IPSEC_SPSTATE_DEAD) {
continue;
+ }
if (key_cmpspidx_exactly(spidx, &sp->spidx)) {
sp->refcnt++;
return sp;
* OUT: NULL : not found
* others : found, pointer to a SP.
*/
+struct secpolicy *
+key_getspbyid(
+ u_int32_t id)
+{
+ struct secpolicy *sp;
+
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
+
+ lck_mtx_lock(sadb_mutex);
+ sp = __key_getspbyid(id);
+ lck_mtx_unlock(sadb_mutex);
+
+ return sp;
+}
+
static struct secpolicy *
-key_getspbyid(id)
- u_int32_t id;
+__key_getspbyid(u_int32_t id)
{
struct secpolicy *sp;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
LIST_FOREACH(sp, &sptree[IPSEC_DIR_INBOUND], chain) {
- if (sp->state == IPSEC_SPSTATE_DEAD)
+ if (sp->state == IPSEC_SPSTATE_DEAD) {
continue;
+ }
if (sp->id == id) {
sp->refcnt++;
return sp;
}
LIST_FOREACH(sp, &sptree[IPSEC_DIR_OUTBOUND], chain) {
- if (sp->state == IPSEC_SPSTATE_DEAD)
+ if (sp->state == IPSEC_SPSTATE_DEAD) {
continue;
+ }
if (sp->id == id) {
sp->refcnt++;
return sp;
}
struct secpolicy *
-key_newsp()
+key_newsp(void)
{
struct secpolicy *newsp = NULL;
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
newsp = keydb_newsecpolicy();
- if (!newsp)
+ if (!newsp) {
return newsp;
+ }
newsp->refcnt = 1;
newsp->req = NULL;
* so must be set properly later.
*/
struct secpolicy *
-key_msg2sp(xpl0, len, error)
- struct sadb_x_policy *xpl0;
- size_t len;
- int *error;
+key_msg2sp(
+ struct sadb_x_policy *xpl0,
+ size_t len,
+ int *error)
{
struct secpolicy *newsp;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (xpl0 == NULL)
+ if (xpl0 == NULL) {
panic("key_msg2sp: NULL pointer was passed.\n");
- if (len < sizeof(*xpl0))
+ }
+ if (len < sizeof(*xpl0)) {
panic("key_msg2sp: invalid length.\n");
+ }
if (len != PFKEY_EXTLEN(xpl0)) {
ipseclog((LOG_DEBUG, "key_msg2sp: Invalid msg length.\n"));
*error = EINVAL;
/* check policy */
switch (xpl0->sadb_x_policy_type) {
case IPSEC_POLICY_DISCARD:
+ case IPSEC_POLICY_GENERATE:
case IPSEC_POLICY_NONE:
case IPSEC_POLICY_ENTRUST:
case IPSEC_POLICY_BYPASS:
break;
case IPSEC_POLICY_IPSEC:
- {
+ {
int tlen;
struct sadb_x_ipsecrequest *xisr;
struct ipsecrequest **p_isr = &newsp->req;
if (PFKEY_EXTLEN(xpl0) < sizeof(*xpl0)) {
ipseclog((LOG_DEBUG,
"key_msg2sp: Invalid msg length.\n"));
- key_freesp(newsp);
+ key_freesp(newsp, KEY_SADB_UNLOCKED);
*error = EINVAL;
return NULL;
}
xisr = (struct sadb_x_ipsecrequest *)(xpl0 + 1);
while (tlen > 0) {
+ if (tlen < sizeof(*xisr)) {
+ ipseclog((LOG_DEBUG, "key_msg2sp: "
+ "invalid ipsecrequest.\n"));
+ key_freesp(newsp, KEY_SADB_UNLOCKED);
+ *error = EINVAL;
+ return NULL;
+ }
/* length check */
if (xisr->sadb_x_ipsecrequest_len < sizeof(*xisr)) {
ipseclog((LOG_DEBUG, "key_msg2sp: "
- "invalid ipsecrequest length.\n"));
- key_freesp(newsp);
+ "invalid ipsecrequest length.\n"));
+ key_freesp(newsp, KEY_SADB_UNLOCKED);
*error = EINVAL;
return NULL;
}
/* allocate request buffer */
- KMALLOC(*p_isr, struct ipsecrequest *, sizeof(**p_isr));
+ KMALLOC_WAIT(*p_isr, struct ipsecrequest *, sizeof(**p_isr));
if ((*p_isr) == NULL) {
ipseclog((LOG_DEBUG,
"key_msg2sp: No more memory.\n"));
- key_freesp(newsp);
+ key_freesp(newsp, KEY_SADB_UNLOCKED);
*error = ENOBUFS;
return NULL;
}
switch (xisr->sadb_x_ipsecrequest_proto) {
case IPPROTO_ESP:
case IPPROTO_AH:
- case IPPROTO_IPCOMP:
break;
default:
ipseclog((LOG_DEBUG,
"key_msg2sp: invalid proto type=%u\n",
xisr->sadb_x_ipsecrequest_proto));
- key_freesp(newsp);
+ key_freesp(newsp, KEY_SADB_UNLOCKED);
*error = EPROTONOSUPPORT;
return NULL;
}
ipseclog((LOG_DEBUG,
"key_msg2sp: invalid mode=%u\n",
xisr->sadb_x_ipsecrequest_mode));
- key_freesp(newsp);
+ key_freesp(newsp, KEY_SADB_UNLOCKED);
*error = EINVAL;
return NULL;
}
* update it, don't refuse it.
*/
if (xisr->sadb_x_ipsecrequest_reqid
- > IPSEC_MANUAL_REQID_MAX) {
+ > IPSEC_MANUAL_REQID_MAX) {
ipseclog((LOG_DEBUG,
"key_msg2sp: reqid=%d range "
"violation, updated by kernel.\n",
/* allocate new reqid id if reqid is zero. */
if (xisr->sadb_x_ipsecrequest_reqid == 0) {
- u_int32_t reqid;
+ u_int16_t reqid;
if ((reqid = key_newreqid()) == 0) {
- key_freesp(newsp);
+ key_freesp(newsp, KEY_SADB_UNLOCKED);
*error = ENOBUFS;
return NULL;
}
(*p_isr)->saidx.reqid = reqid;
xisr->sadb_x_ipsecrequest_reqid = reqid;
} else {
- /* set it for manual keying. */
+ /* set it for manual keying. */
(*p_isr)->saidx.reqid =
- xisr->sadb_x_ipsecrequest_reqid;
+ xisr->sadb_x_ipsecrequest_reqid;
}
break;
default:
ipseclog((LOG_DEBUG, "key_msg2sp: invalid level=%u\n",
- xisr->sadb_x_ipsecrequest_level));
- key_freesp(newsp);
+ xisr->sadb_x_ipsecrequest_level));
+ key_freesp(newsp, KEY_SADB_UNLOCKED);
*error = EINVAL;
return NULL;
}
if (xisr->sadb_x_ipsecrequest_len > sizeof(*xisr)) {
struct sockaddr *paddr;
+ if (tlen < xisr->sadb_x_ipsecrequest_len) {
+ ipseclog((LOG_DEBUG, "key_msg2sp: invalid request "
+ "address length.\n"));
+ key_freesp(newsp, KEY_SADB_UNLOCKED);
+ *error = EINVAL;
+ return NULL;
+ }
+
paddr = (struct sockaddr *)(xisr + 1);
+ uint8_t src_len = paddr->sa_len;
+
+ /* +sizeof(uint8_t) for dst_len below */
+ if (xisr->sadb_x_ipsecrequest_len < sizeof(*xisr) + src_len + sizeof(uint8_t)) {
+ ipseclog((LOG_DEBUG, "key_msg2sp: invalid request "
+ "invalid source address length.\n"));
+ key_freesp(newsp, KEY_SADB_UNLOCKED);
+ *error = EINVAL;
+ return NULL;
+ }
/* validity check */
if (paddr->sa_len
> sizeof((*p_isr)->saidx.src)) {
ipseclog((LOG_DEBUG, "key_msg2sp: invalid request "
- "address length.\n"));
- key_freesp(newsp);
+ "address length.\n"));
+ key_freesp(newsp, KEY_SADB_UNLOCKED);
*error = EINVAL;
return NULL;
}
+
bcopy(paddr, &(*p_isr)->saidx.src,
- paddr->sa_len);
+ MIN(paddr->sa_len, sizeof((*p_isr)->saidx.src)));
- paddr = (struct sockaddr *)((caddr_t)paddr
- + paddr->sa_len);
+ paddr = (struct sockaddr *)((caddr_t)paddr + paddr->sa_len);
+ uint8_t dst_len = paddr->sa_len;
+
+ if (xisr->sadb_x_ipsecrequest_len < sizeof(*xisr) + src_len + dst_len) {
+ ipseclog((LOG_DEBUG, "key_msg2sp: invalid request "
+ "invalid dest address length.\n"));
+ key_freesp(newsp, KEY_SADB_UNLOCKED);
+ *error = EINVAL;
+ return NULL;
+ }
/* validity check */
if (paddr->sa_len
> sizeof((*p_isr)->saidx.dst)) {
ipseclog((LOG_DEBUG, "key_msg2sp: invalid request "
- "address length.\n"));
- key_freesp(newsp);
+ "address length.\n"));
+ key_freesp(newsp, KEY_SADB_UNLOCKED);
*error = EINVAL;
return NULL;
}
+
bcopy(paddr, &(*p_isr)->saidx.dst,
- paddr->sa_len);
+ MIN(paddr->sa_len, sizeof((*p_isr)->saidx.dst)));
}
- (*p_isr)->sav = NULL;
(*p_isr)->sp = newsp;
/* initialization for the next. */
/* validity check */
if (tlen < 0) {
ipseclog((LOG_DEBUG, "key_msg2sp: becoming tlen < 0.\n"));
- key_freesp(newsp);
+ key_freesp(newsp, KEY_SADB_UNLOCKED);
*error = EINVAL;
return NULL;
}
- xisr = (struct sadb_x_ipsecrequest *)((caddr_t)xisr
- + xisr->sadb_x_ipsecrequest_len);
+ xisr = (struct sadb_x_ipsecrequest *)(void *)
+ ((caddr_t)xisr + xisr->sadb_x_ipsecrequest_len);
}
- }
- break;
+ }
+ break;
default:
ipseclog((LOG_DEBUG, "key_msg2sp: invalid policy type.\n"));
- key_freesp(newsp);
+ key_freesp(newsp, KEY_SADB_UNLOCKED);
*error = EINVAL;
return NULL;
}
return newsp;
}
-static u_int32_t
-key_newreqid()
+static u_int16_t
+key_newreqid(void)
{
- static u_int32_t auto_reqid = IPSEC_MANUAL_REQID_MAX + 1;
-
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ lck_mtx_lock(sadb_mutex);
+ static u_int16_t auto_reqid = IPSEC_MANUAL_REQID_MAX + 1;
+ int done = 0;
- auto_reqid = (auto_reqid == ~0
- ? IPSEC_MANUAL_REQID_MAX + 1 : auto_reqid + 1);
+ /* The reqid must be limited to 16 bits because the PF_KEY message format only uses
+ * 16 bits for this field. Once it becomes larger than 16 bits - ipsec fails to
+ * work anymore. Changing the PF_KEY message format would introduce compatibility
+ * issues. This code now tests to see if the tentative reqid is in use */
- /* XXX should be unique check */
+ while (!done) {
+ struct secpolicy *sp;
+ struct ipsecrequest *isr;
+ int dir;
+
+ auto_reqid = (auto_reqid == 0xFFFF
+ ? IPSEC_MANUAL_REQID_MAX + 1 : auto_reqid + 1);
+
+ /* check for uniqueness */
+ done = 1;
+ for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
+ LIST_FOREACH(sp, &sptree[dir], chain) {
+ for (isr = sp->req; isr != NULL; isr = isr->next) {
+ if (isr->saidx.reqid == auto_reqid) {
+ done = 0;
+ break;
+ }
+ }
+ if (done == 0) {
+ break;
+ }
+ }
+ if (done == 0) {
+ break;
+ }
+ }
+ }
+ lck_mtx_unlock(sadb_mutex);
return auto_reqid;
}
* copy secpolicy struct to sadb_x_policy structure indicated.
*/
struct mbuf *
-key_sp2msg(sp)
- struct secpolicy *sp;
+key_sp2msg(
+ struct secpolicy *sp)
{
struct sadb_x_policy *xpl;
- int tlen;
+ u_int tlen;
caddr_t p;
struct mbuf *m;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
/* sanity check. */
- if (sp == NULL)
+ if (sp == NULL) {
panic("key_sp2msg: NULL pointer was passed.\n");
+ }
tlen = key_getspreqmsglen(sp);
+ if (PFKEY_UNIT64(tlen) > UINT16_MAX) {
+ ipseclog((LOG_ERR, "key_getspreqmsglen returned length %u\n",
+ tlen));
+ return NULL;
+ }
m = key_alloc_mbuf(tlen);
- if (!m || m->m_next) { /*XXX*/
- if (m)
+ if (!m || m->m_next) { /*XXX*/
+ if (m) {
m_freem(m);
+ }
return NULL;
}
xpl = mtod(m, struct sadb_x_policy *);
bzero(xpl, tlen);
- xpl->sadb_x_policy_len = PFKEY_UNIT64(tlen);
+ xpl->sadb_x_policy_len = (u_int16_t)PFKEY_UNIT64(tlen);
xpl->sadb_x_policy_exttype = SADB_X_EXT_POLICY;
- xpl->sadb_x_policy_type = sp->policy;
+ xpl->sadb_x_policy_type = (u_int16_t)sp->policy;
xpl->sadb_x_policy_dir = sp->spidx.dir;
xpl->sadb_x_policy_id = sp->id;
p = (caddr_t)xpl + sizeof(*xpl);
struct ipsecrequest *isr;
for (isr = sp->req; isr != NULL; isr = isr->next) {
-
- xisr = (struct sadb_x_ipsecrequest *)p;
+ xisr = (struct sadb_x_ipsecrequest *)(void *)p;
xisr->sadb_x_ipsecrequest_proto = isr->saidx.proto;
xisr->sadb_x_ipsecrequest_mode = isr->saidx.mode;
- xisr->sadb_x_ipsecrequest_level = isr->level;
- xisr->sadb_x_ipsecrequest_reqid = isr->saidx.reqid;
+ xisr->sadb_x_ipsecrequest_level = (u_int8_t)isr->level;
+ xisr->sadb_x_ipsecrequest_reqid = (u_int16_t)isr->saidx.reqid;
p += sizeof(*xisr);
bcopy(&isr->saidx.src, p, isr->saidx.src.ss_len);
p += isr->saidx.src.ss_len;
xisr->sadb_x_ipsecrequest_len =
- PFKEY_ALIGN8(sizeof(*xisr)
- + isr->saidx.src.ss_len
- + isr->saidx.dst.ss_len);
+ PFKEY_ALIGN8(sizeof(*xisr)
+ + isr->saidx.src.ss_len
+ + isr->saidx.dst.ss_len);
}
}
/* m will not be freed nor modified */
static struct mbuf *
key_gather_mbuf(struct mbuf *m, const struct sadb_msghdr *mhp,
- int ndeep, int nitem, int *items)
+ int ndeep, int nitem, int *items)
{
int idx;
int i;
struct mbuf *result = NULL, *n;
int len;
- if (m == NULL || mhp == NULL)
+ if (m == NULL || mhp == NULL) {
panic("null pointer passed to key_gather");
+ }
for (i = 0; i < nitem; i++) {
idx = items[i];
- if (idx < 0 || idx > SADB_EXT_MAX)
+ if (idx < 0 || idx > SADB_EXT_MAX) {
goto fail;
+ }
/* don't attempt to pull empty extension */
- if (idx == SADB_EXT_RESERVED && mhp->msg == NULL)
+ if (idx == SADB_EXT_RESERVED && mhp->msg == NULL) {
continue;
- if (idx != SADB_EXT_RESERVED &&
- (mhp->ext[idx] == NULL || mhp->extlen[idx] == 0))
+ }
+ if (idx != SADB_EXT_RESERVED &&
+ (mhp->ext[idx] == NULL || mhp->extlen[idx] == 0)) {
continue;
+ }
if (idx == SADB_EXT_RESERVED) {
len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
-#if DIAGNOSTIC
- if (len > MHLEN)
- panic("assumption failed");
-#endif
- MGETHDR(n, M_DONTWAIT, MT_DATA);
- if (!n)
+ MGETHDR(n, M_WAITOK, MT_DATA); // sadb_msg len < MHLEN - enforced by _CASSERT
+ if (!n) {
goto fail;
+ }
n->m_len = len;
n->m_next = NULL;
m_copydata(m, 0, sizeof(struct sadb_msg),
} else if (i < ndeep) {
len = mhp->extlen[idx];
n = key_alloc_mbuf(len);
- if (!n || n->m_next) { /*XXX*/
- if (n)
+ if (!n || n->m_next) { /*XXX*/
+ if (n) {
m_freem(n);
+ }
goto fail;
}
m_copydata(m, mhp->extoff[idx], mhp->extlen[idx],
mtod(n, caddr_t));
} else {
n = m_copym(m, mhp->extoff[idx], mhp->extlen[idx],
- M_DONTWAIT);
+ M_WAITOK);
}
- if (n == NULL)
+ if (n == NULL) {
goto fail;
+ }
- if (result)
+ if (result) {
m_cat(result, n);
- else
+ } else {
result = n;
+ }
}
if ((result->m_flags & M_PKTHDR) != 0) {
result->m_pkthdr.len = 0;
- for (n = result; n; n = n->m_next)
+ for (n = result; n; n = n->m_next) {
result->m_pkthdr.len += n->m_len;
+ }
}
return result;
* m will always be freed.
*/
static int
-key_spdadd(so, m, mhp)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_spdadd(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
- struct sadb_address *src0, *dst0;
+ struct sadb_address *src0, *dst0, *src1 = NULL, *dst1 = NULL;
struct sadb_x_policy *xpl0, *xpl;
struct sadb_lifetime *lft = NULL;
struct secpolicyindex spidx;
struct secpolicy *newsp;
struct timeval tv;
+ ifnet_t internal_if = NULL;
+ char *outgoing_if = NULL;
+ char *ipsec_if = NULL;
+ struct sadb_x_ipsecif *ipsecifopts = NULL;
int error;
+ int use_src_range = 0;
+ int use_dst_range = 0;
+ int init_disabled = 0;
+ int address_family, address_len;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_spdadd: NULL pointer is passed.\n");
+ }
- if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
- mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
+ if (mhp->ext[SADB_X_EXT_ADDR_RANGE_SRC_START] != NULL && mhp->ext[SADB_X_EXT_ADDR_RANGE_SRC_END] != NULL) {
+ use_src_range = 1;
+ }
+ if (mhp->ext[SADB_X_EXT_ADDR_RANGE_DST_START] != NULL && mhp->ext[SADB_X_EXT_ADDR_RANGE_DST_END] != NULL) {
+ use_dst_range = 1;
+ }
+
+ if ((!use_src_range && mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL) ||
+ (!use_dst_range && mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) ||
mhp->ext[SADB_X_EXT_POLICY] == NULL) {
ipseclog((LOG_DEBUG, "key_spdadd: invalid message is passed.\n"));
return key_senderror(so, m, EINVAL);
}
- if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
- mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address) ||
+ if ((use_src_range && (mhp->extlen[SADB_X_EXT_ADDR_RANGE_SRC_START] < sizeof(struct sadb_address)
+ || mhp->extlen[SADB_X_EXT_ADDR_RANGE_SRC_END] < sizeof(struct sadb_address))) ||
+ (!use_src_range && mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address)) ||
+ (use_dst_range && (mhp->extlen[SADB_X_EXT_ADDR_RANGE_DST_START] < sizeof(struct sadb_address)
+ || mhp->extlen[SADB_X_EXT_ADDR_RANGE_DST_END] < sizeof(struct sadb_address))) ||
+ (!use_dst_range && mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) ||
mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
ipseclog((LOG_DEBUG, "key_spdadd: invalid message is passed.\n"));
return key_senderror(so, m, EINVAL);
}
if (mhp->ext[SADB_EXT_LIFETIME_HARD] != NULL) {
if (mhp->extlen[SADB_EXT_LIFETIME_HARD]
- < sizeof(struct sadb_lifetime)) {
+ < sizeof(struct sadb_lifetime)) {
+ ipseclog((LOG_DEBUG, "key_spdadd: invalid message is passed.\n"));
+ return key_senderror(so, m, EINVAL);
+ }
+ lft = (struct sadb_lifetime *)
+ (void *)mhp->ext[SADB_EXT_LIFETIME_HARD];
+ }
+ if (mhp->ext[SADB_X_EXT_IPSECIF] != NULL) {
+ if (mhp->extlen[SADB_X_EXT_IPSECIF] < sizeof(struct sadb_x_ipsecif)) {
ipseclog((LOG_DEBUG, "key_spdadd: invalid message is passed.\n"));
return key_senderror(so, m, EINVAL);
}
- lft = (struct sadb_lifetime *)mhp->ext[SADB_EXT_LIFETIME_HARD];
}
- src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
- dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
- xpl0 = (struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY];
+ if (use_src_range) {
+ src0 = (struct sadb_address *)mhp->ext[SADB_X_EXT_ADDR_RANGE_SRC_START];
+ src1 = (struct sadb_address *)mhp->ext[SADB_X_EXT_ADDR_RANGE_SRC_END];
+ } else {
+ src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
+ }
+ if (use_dst_range) {
+ dst0 = (struct sadb_address *)mhp->ext[SADB_X_EXT_ADDR_RANGE_DST_START];
+ dst1 = (struct sadb_address *)mhp->ext[SADB_X_EXT_ADDR_RANGE_DST_END];
+ } else {
+ dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
+ }
+ xpl0 = (struct sadb_x_policy *)(void *)mhp->ext[SADB_X_EXT_POLICY];
+ ipsecifopts = (struct sadb_x_ipsecif *)(void *)mhp->ext[SADB_X_EXT_IPSECIF];
- /* make secindex */
- /* XXX boundary check against sa_len */
- KEY_SETSECSPIDX(xpl0->sadb_x_policy_dir,
- src0 + 1,
- dst0 + 1,
- src0->sadb_address_prefixlen,
- dst0->sadb_address_prefixlen,
- src0->sadb_address_proto,
- &spidx);
-
- /* checking the direciton. */
+ /* check addresses */
+ address_family = ((struct sockaddr *)(src0 + 1))->sa_family;
+ address_len = ((struct sockaddr *)(src0 + 1))->sa_len;
+ if (use_src_range) {
+ if (((struct sockaddr *)(src1 + 1))->sa_family != address_family ||
+ ((struct sockaddr *)(src1 + 1))->sa_len != address_len) {
+ return key_senderror(so, m, EINVAL);
+ }
+ }
+ if (((struct sockaddr *)(dst0 + 1))->sa_family != address_family ||
+ ((struct sockaddr *)(dst0 + 1))->sa_len != address_len) {
+ return key_senderror(so, m, EINVAL);
+ }
+ if (use_dst_range) {
+ if (((struct sockaddr *)(dst1 + 1))->sa_family != address_family ||
+ ((struct sockaddr *)(dst1 + 1))->sa_len != address_len) {
+ return key_senderror(so, m, EINVAL);
+ }
+ }
+
+ /* checking the direction. */
switch (xpl0->sadb_x_policy_dir) {
case IPSEC_DIR_INBOUND:
case IPSEC_DIR_OUTBOUND:
/* check policy */
/* key_spdadd() accepts DISCARD, NONE and IPSEC. */
if (xpl0->sadb_x_policy_type == IPSEC_POLICY_ENTRUST
- || xpl0->sadb_x_policy_type == IPSEC_POLICY_BYPASS) {
+ || xpl0->sadb_x_policy_type == IPSEC_POLICY_BYPASS) {
ipseclog((LOG_DEBUG, "key_spdadd: Invalid policy type.\n"));
return key_senderror(so, m, EINVAL);
}
/* policy requests are mandatory when action is ipsec. */
- if (mhp->msg->sadb_msg_type != SADB_X_SPDSETIDX
- && xpl0->sadb_x_policy_type == IPSEC_POLICY_IPSEC
- && mhp->extlen[SADB_X_EXT_POLICY] <= sizeof(*xpl0)) {
+ if (mhp->msg->sadb_msg_type != SADB_X_SPDSETIDX
+ && xpl0->sadb_x_policy_type == IPSEC_POLICY_IPSEC
+ && mhp->extlen[SADB_X_EXT_POLICY] <= sizeof(*xpl0)) {
ipseclog((LOG_DEBUG, "key_spdadd: some policy requests part required.\n"));
return key_senderror(so, m, EINVAL);
}
+ /* Process interfaces */
+ if (ipsecifopts != NULL) {
+ if (ipsecifopts->sadb_x_ipsecif_internal_if[0]) {
+ ifnet_find_by_name(ipsecifopts->sadb_x_ipsecif_internal_if, &internal_if);
+ }
+ if (ipsecifopts->sadb_x_ipsecif_outgoing_if[0]) {
+ outgoing_if = ipsecifopts->sadb_x_ipsecif_outgoing_if;
+ }
+ if (ipsecifopts->sadb_x_ipsecif_ipsec_if[0]) {
+ ipsec_if = ipsecifopts->sadb_x_ipsecif_ipsec_if;
+ }
+ init_disabled = ipsecifopts->sadb_x_ipsecif_init_disabled;
+ }
+
+ /* make secindex */
+ /* XXX boundary check against sa_len */
+ KEY_SETSECSPIDX(xpl0->sadb_x_policy_dir,
+ src0 + 1,
+ dst0 + 1,
+ src0->sadb_address_prefixlen,
+ dst0->sadb_address_prefixlen,
+ src0->sadb_address_proto,
+ internal_if,
+ use_src_range ? src0 + 1 : NULL,
+ use_src_range ? src1 + 1 : NULL,
+ use_dst_range ? dst0 + 1 : NULL,
+ use_dst_range ? dst1 + 1 : NULL,
+ &spidx);
+
/*
* checking there is SP already or not.
* SPDUPDATE doesn't depend on whether there is a SP or not.
* If the type is either SPDADD or SPDSETIDX AND a SP is found,
* then error.
*/
+ lck_mtx_lock(sadb_mutex);
newsp = key_getsp(&spidx);
if (mhp->msg->sadb_msg_type == SADB_X_SPDUPDATE) {
if (newsp) {
newsp->state = IPSEC_SPSTATE_DEAD;
- key_freesp(newsp);
+ key_freesp(newsp, KEY_SADB_LOCKED);
}
} else {
if (newsp != NULL) {
- key_freesp(newsp);
+ key_freesp(newsp, KEY_SADB_LOCKED);
ipseclog((LOG_DEBUG, "key_spdadd: a SP entry exists already.\n"));
+ lck_mtx_unlock(sadb_mutex);
+ if (internal_if) {
+ ifnet_release(internal_if);
+ internal_if = NULL;
+ }
return key_senderror(so, m, EEXIST);
}
}
+ lck_mtx_unlock(sadb_mutex);
/* allocation new SP entry */
if ((newsp = key_msg2sp(xpl0, PFKEY_EXTLEN(xpl0), &error)) == NULL) {
+ if (internal_if) {
+ ifnet_release(internal_if);
+ internal_if = NULL;
+ }
return key_senderror(so, m, error);
}
if ((newsp->id = key_getnewspid()) == 0) {
keydb_delsecpolicy(newsp);
+ if (internal_if) {
+ ifnet_release(internal_if);
+ internal_if = NULL;
+ }
return key_senderror(so, m, ENOBUFS);
}
/* XXX boundary check against sa_len */
KEY_SETSECSPIDX(xpl0->sadb_x_policy_dir,
- src0 + 1,
- dst0 + 1,
- src0->sadb_address_prefixlen,
- dst0->sadb_address_prefixlen,
- src0->sadb_address_proto,
- &newsp->spidx);
-
- /* sanity check on addr pair */
- if (((struct sockaddr *)(src0 + 1))->sa_family !=
- ((struct sockaddr *)(dst0+ 1))->sa_family) {
- keydb_delsecpolicy(newsp);
- return key_senderror(so, m, EINVAL);
- }
- if (((struct sockaddr *)(src0 + 1))->sa_len !=
- ((struct sockaddr *)(dst0+ 1))->sa_len) {
- keydb_delsecpolicy(newsp);
- return key_senderror(so, m, EINVAL);
- }
+ src0 + 1,
+ dst0 + 1,
+ src0->sadb_address_prefixlen,
+ dst0->sadb_address_prefixlen,
+ src0->sadb_address_proto,
+ internal_if,
+ use_src_range ? src0 + 1 : NULL,
+ use_src_range ? src1 + 1 : NULL,
+ use_dst_range ? dst0 + 1 : NULL,
+ use_dst_range ? dst1 + 1 : NULL,
+ &newsp->spidx);
+
#if 1
+ /*
+ * allow IPv6 over IPv4 or IPv4 over IPv6 tunnels using ESP -
+ * otherwise reject if inner and outer address families not equal
+ */
if (newsp->req && newsp->req->saidx.src.ss_family) {
struct sockaddr *sa;
sa = (struct sockaddr *)(src0 + 1);
if (sa->sa_family != newsp->req->saidx.src.ss_family) {
- keydb_delsecpolicy(newsp);
- return key_senderror(so, m, EINVAL);
+ if (newsp->req->saidx.mode != IPSEC_MODE_TUNNEL || newsp->req->saidx.proto != IPPROTO_ESP) {
+ keydb_delsecpolicy(newsp);
+ if (internal_if) {
+ ifnet_release(internal_if);
+ internal_if = NULL;
+ }
+ return key_senderror(so, m, EINVAL);
+ }
}
}
if (newsp->req && newsp->req->saidx.dst.ss_family) {
struct sockaddr *sa;
sa = (struct sockaddr *)(dst0 + 1);
if (sa->sa_family != newsp->req->saidx.dst.ss_family) {
- keydb_delsecpolicy(newsp);
- return key_senderror(so, m, EINVAL);
+ if (newsp->req->saidx.mode != IPSEC_MODE_TUNNEL || newsp->req->saidx.proto != IPPROTO_ESP) {
+ keydb_delsecpolicy(newsp);
+ if (internal_if) {
+ ifnet_release(internal_if);
+ internal_if = NULL;
+ }
+ return key_senderror(so, m, EINVAL);
+ }
}
}
#endif
microtime(&tv);
newsp->created = tv.tv_sec;
newsp->lastused = tv.tv_sec;
- newsp->lifetime = lft ? lft->sadb_lifetime_addtime : 0;
- newsp->validtime = lft ? lft->sadb_lifetime_usetime : 0;
+ newsp->lifetime = (long)(lft ? lft->sadb_lifetime_addtime : 0);
+ newsp->validtime = (long)(lft ? lft->sadb_lifetime_usetime : 0);
- newsp->refcnt = 1; /* do not reclaim until I say I do */
+ if (outgoing_if != NULL) {
+ ifnet_find_by_name(outgoing_if, &newsp->outgoing_if);
+ }
+ if (ipsec_if != NULL) {
+ ifnet_find_by_name(ipsec_if, &newsp->ipsec_if);
+ }
+ if (init_disabled > 0) {
+ newsp->disabled = 1;
+ }
+
+ newsp->refcnt = 1; /* do not reclaim until I say I do */
newsp->state = IPSEC_SPSTATE_ALIVE;
- LIST_INSERT_TAIL(&sptree[newsp->spidx.dir], newsp, secpolicy, chain);
+ lck_mtx_lock(sadb_mutex);
+ /*
+ * policies of type generate should be at the end of the SPD
+ * because they function as default discard policies
+ * Don't start timehandler for generate policies
+ */
+ if (newsp->policy == IPSEC_POLICY_GENERATE) {
+ LIST_INSERT_TAIL(&sptree[newsp->spidx.dir], newsp, secpolicy, chain);
+ } else { /* XXX until we have policy ordering in the kernel */
+ struct secpolicy *tmpsp;
+
+ LIST_FOREACH(tmpsp, &sptree[newsp->spidx.dir], chain)
+ if (tmpsp->policy == IPSEC_POLICY_GENERATE) {
+ break;
+ }
+ if (tmpsp) {
+ LIST_INSERT_BEFORE(tmpsp, newsp, chain);
+ } else {
+ LIST_INSERT_TAIL(&sptree[newsp->spidx.dir], newsp, secpolicy, chain);
+ }
+ key_start_timehandler();
+ }
+ ipsec_policy_count++;
/* Turn off the ipsec bypass */
- if (ipsec_bypass != 0)
+ if (ipsec_bypass != 0) {
ipsec_bypass = 0;
+ }
/* delete the entry in spacqtree */
if (mhp->msg->sadb_msg_type == SADB_X_SPDUPDATE) {
spacq->created = tv.tv_sec;
spacq->count = 0;
}
- }
-
- {
- struct mbuf *n, *mpolicy;
- struct sadb_msg *newmsg;
- int off;
-
- /* create new sadb_msg to reply. */
- if (lft) {
- int mbufItems[] = {SADB_EXT_RESERVED, SADB_X_EXT_POLICY,
- SADB_EXT_LIFETIME_HARD, SADB_EXT_ADDRESS_SRC,
- SADB_EXT_ADDRESS_DST};
- n = key_gather_mbuf(m, mhp, 2, sizeof(mbufItems)/sizeof(int), mbufItems);
- } else {
- int mbufItems[] = {SADB_EXT_RESERVED, SADB_X_EXT_POLICY,
- SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST};
- n = key_gather_mbuf(m, mhp, 2, sizeof(mbufItems)/sizeof(int), mbufItems);
}
- if (!n)
- return key_senderror(so, m, ENOBUFS);
+ lck_mtx_unlock(sadb_mutex);
- if (n->m_len < sizeof(*newmsg)) {
- n = m_pullup(n, sizeof(*newmsg));
- if (!n)
+ {
+ struct mbuf *n, *mpolicy;
+ struct sadb_msg *newmsg;
+ int off;
+
+ /* create new sadb_msg to reply. */
+ if (lft) {
+ int mbufItems[] = {SADB_EXT_RESERVED, SADB_X_EXT_POLICY,
+ SADB_EXT_LIFETIME_HARD, SADB_EXT_ADDRESS_SRC,
+ SADB_EXT_ADDRESS_DST, SADB_X_EXT_ADDR_RANGE_SRC_START, SADB_X_EXT_ADDR_RANGE_SRC_END,
+ SADB_X_EXT_ADDR_RANGE_DST_START, SADB_X_EXT_ADDR_RANGE_DST_END};
+ n = key_gather_mbuf(m, mhp, 2, sizeof(mbufItems) / sizeof(int), mbufItems);
+ } else {
+ int mbufItems[] = {SADB_EXT_RESERVED, SADB_X_EXT_POLICY,
+ SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST,
+ SADB_X_EXT_ADDR_RANGE_SRC_START, SADB_X_EXT_ADDR_RANGE_SRC_END,
+ SADB_X_EXT_ADDR_RANGE_DST_START, SADB_X_EXT_ADDR_RANGE_DST_END};
+ n = key_gather_mbuf(m, mhp, 2, sizeof(mbufItems) / sizeof(int), mbufItems);
+ }
+ if (!n) {
return key_senderror(so, m, ENOBUFS);
- }
- newmsg = mtod(n, struct sadb_msg *);
- newmsg->sadb_msg_errno = 0;
- newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
+ }
- off = 0;
- mpolicy = m_pulldown(n, PFKEY_ALIGN8(sizeof(struct sadb_msg)),
- sizeof(*xpl), &off);
- if (mpolicy == NULL) {
- /* n is already freed */
- return key_senderror(so, m, ENOBUFS);
- }
- xpl = (struct sadb_x_policy *)(mtod(mpolicy, caddr_t) + off);
- if (xpl->sadb_x_policy_exttype != SADB_X_EXT_POLICY) {
- m_freem(n);
- return key_senderror(so, m, EINVAL);
- }
- xpl->sadb_x_policy_id = newsp->id;
+ if (n->m_len < sizeof(*newmsg)) {
+ n = m_pullup(n, sizeof(*newmsg));
+ if (!n) {
+ return key_senderror(so, m, ENOBUFS);
+ }
+ }
+ newmsg = mtod(n, struct sadb_msg *);
+ newmsg->sadb_msg_errno = 0;
- m_freem(m);
- return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
- }
+ VERIFY(PFKEY_UNIT64(n->m_pkthdr.len) <= UINT16_MAX);
+ newmsg->sadb_msg_len = (u_int16_t)PFKEY_UNIT64(n->m_pkthdr.len);
+
+ off = 0;
+ mpolicy = m_pulldown(n, PFKEY_ALIGN8(sizeof(struct sadb_msg)),
+ sizeof(*xpl), &off);
+ if (mpolicy == NULL) {
+ /* n is already freed */
+ return key_senderror(so, m, ENOBUFS);
+ }
+ xpl = (struct sadb_x_policy *)(void *)(mtod(mpolicy, caddr_t) + off);
+ if (xpl->sadb_x_policy_exttype != SADB_X_EXT_POLICY) {
+ m_freem(n);
+ return key_senderror(so, m, EINVAL);
+ }
+ xpl->sadb_x_policy_id = newsp->id;
+
+ m_freem(m);
+ return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
+ }
}
/*
* others: success.
*/
static u_int32_t
-key_getnewspid()
+key_getnewspid(void)
{
u_int32_t newid = 0;
- int count = key_spi_trycnt; /* XXX */
+ int count = key_spi_trycnt; /* XXX */
struct secpolicy *sp;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
/* when requesting to allocate spi ranged */
+ lck_mtx_lock(sadb_mutex);
while (count--) {
newid = (policy_id = (policy_id == ~0 ? 1 : policy_id + 1));
- if ((sp = key_getspbyid(newid)) == NULL)
+ if ((sp = __key_getspbyid(newid)) == NULL) {
break;
+ }
- key_freesp(sp);
+ key_freesp(sp, KEY_SADB_LOCKED);
}
-
+ lck_mtx_unlock(sadb_mutex);
if (count == 0 || newid == 0) {
ipseclog((LOG_DEBUG, "key_getnewspid: to allocate policy id is failed.\n"));
return 0;
* m will always be freed.
*/
static int
-key_spddelete(so, m, mhp)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_spddelete(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
- struct sadb_address *src0, *dst0;
+ struct sadb_address *src0, *dst0, *src1 = NULL, *dst1 = NULL;
struct sadb_x_policy *xpl0;
struct secpolicyindex spidx;
struct secpolicy *sp;
+ ifnet_t internal_if = NULL;
+ struct sadb_x_ipsecif *ipsecifopts = NULL;
+ int use_src_range = 0;
+ int use_dst_range = 0;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_spddelete: NULL pointer is passed.\n");
+ }
- if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
- mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
+ if (mhp->ext[SADB_X_EXT_ADDR_RANGE_SRC_START] != NULL && mhp->ext[SADB_X_EXT_ADDR_RANGE_SRC_END] != NULL) {
+ use_src_range = 1;
+ }
+ if (mhp->ext[SADB_X_EXT_ADDR_RANGE_DST_START] != NULL && mhp->ext[SADB_X_EXT_ADDR_RANGE_DST_END] != NULL) {
+ use_dst_range = 1;
+ }
+
+ if ((!use_src_range && mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL) ||
+ (!use_dst_range && mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) ||
mhp->ext[SADB_X_EXT_POLICY] == NULL) {
ipseclog((LOG_DEBUG, "key_spddelete: invalid message is passed.\n"));
return key_senderror(so, m, EINVAL);
}
- if (mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
- mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address) ||
+ if ((use_src_range && (mhp->extlen[SADB_X_EXT_ADDR_RANGE_SRC_START] < sizeof(struct sadb_address)
+ || mhp->extlen[SADB_X_EXT_ADDR_RANGE_SRC_END] < sizeof(struct sadb_address))) ||
+ (!use_src_range && mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address)) ||
+ (use_dst_range && (mhp->extlen[SADB_X_EXT_ADDR_RANGE_DST_START] < sizeof(struct sadb_address)
+ || mhp->extlen[SADB_X_EXT_ADDR_RANGE_DST_END] < sizeof(struct sadb_address))) ||
+ (!use_dst_range && mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) ||
mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
ipseclog((LOG_DEBUG, "key_spddelete: invalid message is passed.\n"));
return key_senderror(so, m, EINVAL);
}
- src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
- dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
- xpl0 = (struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY];
+ if (use_src_range) {
+ src0 = (struct sadb_address *)mhp->ext[SADB_X_EXT_ADDR_RANGE_SRC_START];
+ src1 = (struct sadb_address *)mhp->ext[SADB_X_EXT_ADDR_RANGE_SRC_END];
+ } else {
+ src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
+ }
+ if (use_dst_range) {
+ dst0 = (struct sadb_address *)mhp->ext[SADB_X_EXT_ADDR_RANGE_DST_START];
+ dst1 = (struct sadb_address *)mhp->ext[SADB_X_EXT_ADDR_RANGE_DST_END];
+ } else {
+ dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
+ }
+ xpl0 = (struct sadb_x_policy *)(void *)mhp->ext[SADB_X_EXT_POLICY];
+ ipsecifopts = (struct sadb_x_ipsecif *)(void *)mhp->ext[SADB_X_EXT_IPSECIF];
- /* make secindex */
- /* XXX boundary check against sa_len */
- KEY_SETSECSPIDX(xpl0->sadb_x_policy_dir,
- src0 + 1,
- dst0 + 1,
- src0->sadb_address_prefixlen,
- dst0->sadb_address_prefixlen,
- src0->sadb_address_proto,
- &spidx);
-
- /* checking the direciton. */
+ /* checking the direction. */
switch (xpl0->sadb_x_policy_dir) {
case IPSEC_DIR_INBOUND:
case IPSEC_DIR_OUTBOUND:
return key_senderror(so, m, EINVAL);
}
+ /* Process interfaces */
+ if (ipsecifopts != NULL) {
+ if (ipsecifopts->sadb_x_ipsecif_internal_if[0]) {
+ ifnet_find_by_name(ipsecifopts->sadb_x_ipsecif_internal_if, &internal_if);
+ }
+ }
+
+ /* make secindex */
+ /* XXX boundary check against sa_len */
+ KEY_SETSECSPIDX(xpl0->sadb_x_policy_dir,
+ src0 + 1,
+ dst0 + 1,
+ src0->sadb_address_prefixlen,
+ dst0->sadb_address_prefixlen,
+ src0->sadb_address_proto,
+ internal_if,
+ use_src_range ? src0 + 1 : NULL,
+ use_src_range ? src1 + 1 : NULL,
+ use_dst_range ? dst0 + 1 : NULL,
+ use_dst_range ? dst1 + 1 : NULL,
+ &spidx);
+
/* Is there SP in SPD ? */
+ lck_mtx_lock(sadb_mutex);
if ((sp = key_getsp(&spidx)) == NULL) {
ipseclog((LOG_DEBUG, "key_spddelete: no SP found.\n"));
+ lck_mtx_unlock(sadb_mutex);
+ if (internal_if) {
+ ifnet_release(internal_if);
+ internal_if = NULL;
+ }
return key_senderror(so, m, EINVAL);
}
+ if (internal_if) {
+ ifnet_release(internal_if);
+ internal_if = NULL;
+ }
+
/* save policy id to buffer to be returned. */
xpl0->sadb_x_policy_id = sp->id;
sp->state = IPSEC_SPSTATE_DEAD;
- key_freesp(sp);
+ key_freesp(sp, KEY_SADB_LOCKED);
+ lck_mtx_unlock(sadb_mutex);
- {
- struct mbuf *n;
- struct sadb_msg *newmsg;
- int mbufItems[] = {SADB_EXT_RESERVED, SADB_X_EXT_POLICY,
- SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST};
- /* create new sadb_msg to reply. */
- n = key_gather_mbuf(m, mhp, 1, sizeof(mbufItems)/sizeof(int), mbufItems);
- if (!n)
- return key_senderror(so, m, ENOBUFS);
+ {
+ struct mbuf *n;
+ struct sadb_msg *newmsg;
+ int mbufItems[] = {SADB_EXT_RESERVED, SADB_X_EXT_POLICY,
+ SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST,
+ SADB_X_EXT_ADDR_RANGE_SRC_START, SADB_X_EXT_ADDR_RANGE_SRC_END,
+ SADB_X_EXT_ADDR_RANGE_DST_START, SADB_X_EXT_ADDR_RANGE_DST_END};
+
+ /* create new sadb_msg to reply. */
+ n = key_gather_mbuf(m, mhp, 1, sizeof(mbufItems) / sizeof(int), mbufItems);
+ if (!n) {
+ return key_senderror(so, m, ENOBUFS);
+ }
- newmsg = mtod(n, struct sadb_msg *);
- newmsg->sadb_msg_errno = 0;
- newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
+ newmsg = mtod(n, struct sadb_msg *);
+ newmsg->sadb_msg_errno = 0;
+ VERIFY(PFKEY_UNIT64(n->m_pkthdr.len) <= UINT16_MAX);
+ newmsg->sadb_msg_len = (u_int16_t)PFKEY_UNIT64(n->m_pkthdr.len);
- m_freem(m);
- return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
- }
+ m_freem(m);
+ return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
+ }
}
/*
* m will always be freed.
*/
static int
-key_spddelete2(so, m, mhp)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_spddelete2(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
u_int32_t id;
struct secpolicy *sp;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_spddelete2: NULL pointer is passed.\n");
+ }
if (mhp->ext[SADB_X_EXT_POLICY] == NULL ||
mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
return 0;
}
- id = ((struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY])->sadb_x_policy_id;
+ id = ((struct sadb_x_policy *)
+ (void *)mhp->ext[SADB_X_EXT_POLICY])->sadb_x_policy_id;
/* Is there SP in SPD ? */
- if ((sp = key_getspbyid(id)) == NULL) {
+ lck_mtx_lock(sadb_mutex);
+ if ((sp = __key_getspbyid(id)) == NULL) {
+ lck_mtx_unlock(sadb_mutex);
ipseclog((LOG_DEBUG, "key_spddelete2: no SP found id:%u.\n", id));
- key_senderror(so, m, EINVAL);
+ return key_senderror(so, m, EINVAL);
}
sp->state = IPSEC_SPSTATE_DEAD;
- key_freesp(sp);
+ key_freesp(sp, KEY_SADB_LOCKED);
+ lck_mtx_unlock(sadb_mutex);
- {
- struct mbuf *n, *nn;
- struct sadb_msg *newmsg;
- int off, len;
+ {
+ struct mbuf *n, *nn;
+ struct sadb_msg *newmsg;
+ int off, len;
- /* create new sadb_msg to reply. */
- len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
+ /* create new sadb_msg to reply. */
+ len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
- if (len > MCLBYTES)
- return key_senderror(so, m, ENOBUFS);
- MGETHDR(n, M_DONTWAIT, MT_DATA);
- if (n && len > MHLEN) {
- MCLGET(n, M_DONTWAIT);
- if ((n->m_flags & M_EXT) == 0) {
- m_freem(n);
- n = NULL;
+ if (len > MCLBYTES) {
+ return key_senderror(so, m, ENOBUFS);
+ }
+ MGETHDR(n, M_WAITOK, MT_DATA);
+ if (n && len > MHLEN) {
+ MCLGET(n, M_WAITOK);
+ if ((n->m_flags & M_EXT) == 0) {
+ m_freem(n);
+ n = NULL;
+ }
+ }
+ if (!n) {
+ return key_senderror(so, m, ENOBUFS);
}
- }
- if (!n)
- return key_senderror(so, m, ENOBUFS);
- n->m_len = len;
- n->m_next = NULL;
- off = 0;
+ n->m_len = len;
+ n->m_next = NULL;
+ off = 0;
- m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
- off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
+ m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
+ off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
#if DIAGNOSTIC
- if (off != len)
- panic("length inconsistency in key_spddelete2");
+ if (off != len) {
+ panic("length inconsistency in key_spddelete2");
+ }
#endif
- n->m_next = m_copym(m, mhp->extoff[SADB_X_EXT_POLICY],
- mhp->extlen[SADB_X_EXT_POLICY], M_DONTWAIT);
- if (!n->m_next) {
- m_freem(n);
- return key_senderror(so, m, ENOBUFS);
+ n->m_next = m_copym(m, mhp->extoff[SADB_X_EXT_POLICY],
+ mhp->extlen[SADB_X_EXT_POLICY], M_WAITOK);
+ if (!n->m_next) {
+ m_freem(n);
+ return key_senderror(so, m, ENOBUFS);
+ }
+
+ n->m_pkthdr.len = 0;
+ for (nn = n; nn; nn = nn->m_next) {
+ n->m_pkthdr.len += nn->m_len;
+ }
+
+ newmsg = mtod(n, struct sadb_msg *);
+ newmsg->sadb_msg_errno = 0;
+ VERIFY(PFKEY_UNIT64(n->m_pkthdr.len) <= UINT16_MAX);
+ newmsg->sadb_msg_len = (u_int16_t)PFKEY_UNIT64(n->m_pkthdr.len);
+
+ m_freem(m);
+ return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
+ }
+}
+
+static int
+key_spdenable(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
+{
+ u_int32_t id;
+ struct secpolicy *sp;
+
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
+
+ /* sanity check */
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
+ panic("key_spdenable: NULL pointer is passed.\n");
}
- n->m_pkthdr.len = 0;
- for (nn = n; nn; nn = nn->m_next)
- n->m_pkthdr.len += nn->m_len;
+ if (mhp->ext[SADB_X_EXT_POLICY] == NULL ||
+ mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
+ ipseclog((LOG_DEBUG, "key_spdenable: invalid message is passed.\n"));
+ key_senderror(so, m, EINVAL);
+ return 0;
+ }
- newmsg = mtod(n, struct sadb_msg *);
- newmsg->sadb_msg_errno = 0;
- newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
+ id = ((struct sadb_x_policy *)
+ (void *)mhp->ext[SADB_X_EXT_POLICY])->sadb_x_policy_id;
- m_freem(m);
- return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
- }
+ /* Is there SP in SPD ? */
+ lck_mtx_lock(sadb_mutex);
+ if ((sp = __key_getspbyid(id)) == NULL) {
+ lck_mtx_unlock(sadb_mutex);
+ ipseclog((LOG_DEBUG, "key_spdenable: no SP found id:%u.\n", id));
+ return key_senderror(so, m, EINVAL);
+ }
+
+ sp->disabled = 0;
+ key_freesp(sp, KEY_SADB_LOCKED);
+ lck_mtx_unlock(sadb_mutex);
+
+ {
+ struct mbuf *n;
+ struct sadb_msg *newmsg;
+ int mbufItems[] = {SADB_EXT_RESERVED, SADB_X_EXT_POLICY};
+
+ /* create new sadb_msg to reply. */
+ n = key_gather_mbuf(m, mhp, 1, sizeof(mbufItems) / sizeof(int), mbufItems);
+ if (!n) {
+ return key_senderror(so, m, ENOBUFS);
+ }
+
+ if (n->m_len < sizeof(struct sadb_msg)) {
+ n = m_pullup(n, sizeof(struct sadb_msg));
+ if (n == NULL) {
+ return key_senderror(so, m, ENOBUFS);
+ }
+ }
+ newmsg = mtod(n, struct sadb_msg *);
+ newmsg->sadb_msg_errno = 0;
+ VERIFY(PFKEY_UNIT64(n->m_pkthdr.len) <= UINT16_MAX);
+ newmsg->sadb_msg_len = (u_int16_t)PFKEY_UNIT64(n->m_pkthdr.len);
+
+ m_freem(m);
+ return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
+ }
+}
+
+static int
+key_spddisable(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
+{
+ u_int32_t id;
+ struct secpolicy *sp;
+
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
+
+ /* sanity check */
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
+ panic("key_spddisable: NULL pointer is passed.\n");
+ }
+
+ if (mhp->ext[SADB_X_EXT_POLICY] == NULL ||
+ mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
+ ipseclog((LOG_DEBUG, "key_spddisable: invalid message is passed.\n"));
+ key_senderror(so, m, EINVAL);
+ return 0;
+ }
+
+ id = ((struct sadb_x_policy *)
+ (void *)mhp->ext[SADB_X_EXT_POLICY])->sadb_x_policy_id;
+
+ /* Is there SP in SPD ? */
+ lck_mtx_lock(sadb_mutex);
+ if ((sp = __key_getspbyid(id)) == NULL) {
+ lck_mtx_unlock(sadb_mutex);
+ ipseclog((LOG_DEBUG, "key_spddisable: no SP found id:%u.\n", id));
+ return key_senderror(so, m, EINVAL);
+ }
+
+ sp->disabled = 1;
+ key_freesp(sp, KEY_SADB_LOCKED);
+ lck_mtx_unlock(sadb_mutex);
+
+ {
+ struct mbuf *n;
+ struct sadb_msg *newmsg;
+ int mbufItems[] = {SADB_EXT_RESERVED, SADB_X_EXT_POLICY};
+
+ /* create new sadb_msg to reply. */
+ n = key_gather_mbuf(m, mhp, 1, sizeof(mbufItems) / sizeof(int), mbufItems);
+ if (!n) {
+ return key_senderror(so, m, ENOBUFS);
+ }
+
+ if (n->m_len < sizeof(struct sadb_msg)) {
+ n = m_pullup(n, sizeof(struct sadb_msg));
+ if (n == NULL) {
+ return key_senderror(so, m, ENOBUFS);
+ }
+ }
+ newmsg = mtod(n, struct sadb_msg *);
+ newmsg->sadb_msg_errno = 0;
+ VERIFY(PFKEY_UNIT64(n->m_pkthdr.len) <= UINT16_MAX);
+ newmsg->sadb_msg_len = (u_int16_t)PFKEY_UNIT64(n->m_pkthdr.len);
+
+ m_freem(m);
+ return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
+ }
}
/*
* m will always be freed.
*/
static int
-key_spdget(so, m, mhp)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_spdget(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
u_int32_t id;
struct secpolicy *sp;
struct mbuf *n;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_spdget: NULL pointer is passed.\n");
+ }
if (mhp->ext[SADB_X_EXT_POLICY] == NULL ||
mhp->extlen[SADB_X_EXT_POLICY] < sizeof(struct sadb_x_policy)) {
return key_senderror(so, m, EINVAL);
}
- id = ((struct sadb_x_policy *)mhp->ext[SADB_X_EXT_POLICY])->sadb_x_policy_id;
+ id = ((struct sadb_x_policy *)
+ (void *)mhp->ext[SADB_X_EXT_POLICY])->sadb_x_policy_id;
/* Is there SP in SPD ? */
- if ((sp = key_getspbyid(id)) == NULL) {
+ lck_mtx_lock(sadb_mutex);
+ if ((sp = __key_getspbyid(id)) == NULL) {
ipseclog((LOG_DEBUG, "key_spdget: no SP found id:%u.\n", id));
+ lck_mtx_unlock(sadb_mutex);
return key_senderror(so, m, ENOENT);
}
-
+ lck_mtx_unlock(sadb_mutex);
n = key_setdumpsp(sp, SADB_X_SPDGET, 0, mhp->msg->sadb_msg_pid);
+ key_freesp(sp, KEY_SADB_UNLOCKED);
if (n != NULL) {
m_freem(m);
return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
- } else
+ } else {
return key_senderror(so, m, ENOBUFS);
+ }
}
/*
* others: error number
*/
int
-key_spdacquire(sp)
- struct secpolicy *sp;
+key_spdacquire(
+ struct secpolicy *sp)
{
struct mbuf *result = NULL, *m;
struct secspacq *newspacq;
int error;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (sp == NULL)
+ if (sp == NULL) {
panic("key_spdacquire: NULL pointer is passed.\n");
- if (sp->req != NULL)
+ }
+ if (sp->req != NULL) {
panic("key_spdacquire: called but there is request.\n");
- if (sp->policy != IPSEC_POLICY_IPSEC)
+ }
+ if (sp->policy != IPSEC_POLICY_IPSEC) {
panic("key_spdacquire: policy mismathed. IPsec is expected.\n");
+ }
/* get a entry to check whether sent message or not. */
+ lck_mtx_lock(sadb_mutex);
+ sp->refcnt++;
if ((newspacq = key_getspacq(&sp->spidx)) != NULL) {
+ key_freesp(sp, KEY_SADB_LOCKED);
if (key_blockacq_count < newspacq->count) {
/* reset counter and do send message. */
newspacq->count = 0;
} else {
/* increment counter and do nothing. */
newspacq->count++;
+ lck_mtx_unlock(sadb_mutex);
return 0;
}
} else {
/* make new entry for blocking to send SADB_ACQUIRE. */
- if ((newspacq = key_newspacq(&sp->spidx)) == NULL)
+ if ((newspacq = key_newspacq(&sp->spidx)) == NULL) {
+ key_freesp(sp, KEY_SADB_LOCKED);
+ lck_mtx_unlock(sadb_mutex);
return ENOBUFS;
-
+ }
+ key_freesp(sp, KEY_SADB_LOCKED);
/* add to acqtree */
LIST_INSERT_HEAD(&spacqtree, newspacq, chain);
+ key_start_timehandler();
}
-
+ lck_mtx_unlock(sadb_mutex);
/* create new sadb_msg to reply. */
m = key_setsadbmsg(SADB_X_SPDACQUIRE, 0, 0, 0, 0, 0);
if (!m) {
result = m;
result->m_pkthdr.len = 0;
- for (m = result; m; m = m->m_next)
+ for (m = result; m; m = m->m_next) {
result->m_pkthdr.len += m->m_len;
+ }
+ VERIFY(PFKEY_UNIT64(result->m_pkthdr.len) <= UINT16_MAX);
mtod(result, struct sadb_msg *)->sadb_msg_len =
- PFKEY_UNIT64(result->m_pkthdr.len);
+ (u_int16_t)PFKEY_UNIT64(result->m_pkthdr.len);
return key_sendup_mbuf(NULL, m, KEY_SENDUP_REGISTERED);
fail:
- if (result)
+ if (result) {
m_freem(result);
+ }
return error;
}
* m will always be freed.
*/
static int
-key_spdflush(so, m, mhp)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_spdflush(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
struct sadb_msg *newmsg;
struct secpolicy *sp;
u_int dir;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
/* sanity check */
- if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_spdflush: NULL pointer is passed.\n");
+ }
- if (m->m_len != PFKEY_ALIGN8(sizeof(struct sadb_msg)))
+ if (m->m_len != PFKEY_ALIGN8(sizeof(struct sadb_msg))) {
return key_senderror(so, m, EINVAL);
+ }
+ lck_mtx_lock(sadb_mutex);
for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
LIST_FOREACH(sp, &sptree[dir], chain) {
sp->state = IPSEC_SPSTATE_DEAD;
}
}
+ lck_mtx_unlock(sadb_mutex);
if (sizeof(struct sadb_msg) > m->m_len + M_TRAILINGSPACE(m)) {
ipseclog((LOG_DEBUG, "key_spdflush: No more memory.\n"));
return key_senderror(so, m, ENOBUFS);
}
- if (m->m_next)
+ if (m->m_next) {
m_freem(m->m_next);
+ }
m->m_next = NULL;
m->m_pkthdr.len = m->m_len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
newmsg = mtod(m, struct sadb_msg *);
newmsg->sadb_msg_errno = 0;
- newmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len);
+ newmsg->sadb_msg_len = (u_int16_t)PFKEY_UNIT64(m->m_pkthdr.len);
return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
}
*
* m will always be freed.
*/
+
static int
-key_spddump(so, m, mhp)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_spddump(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
- struct secpolicy *sp;
- int cnt;
+ struct secpolicy *sp, **spbuf = NULL, **sp_ptr;
+ u_int32_t cnt = 0, bufcount = 0;
+ size_t total_req_size = 0;
u_int dir;
struct mbuf *n;
-
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ int error = 0;
/* sanity check */
- if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_spddump: NULL pointer is passed.\n");
+ }
+
+ if ((bufcount = ipsec_policy_count) == 0) {
+ error = ENOENT;
+ goto end;
+ }
+
+ if (os_add_overflow(bufcount, 256, &bufcount)) {
+ ipseclog((LOG_DEBUG, "key_spddump: bufcount overflow, ipsec policy count %u.\n", ipsec_policy_count));
+ bufcount = ipsec_policy_count;
+ }
+
+ if (os_mul_overflow(bufcount, sizeof(struct secpolicy *), &total_req_size)) {
+ panic("key_spddump spbuf requested memory overflow %u\n", bufcount);
+ }
- /* search SPD entry and get buffer size. */
- cnt = 0;
+ KMALLOC_WAIT(spbuf, struct secpolicy**, total_req_size);
+ if (spbuf == NULL) {
+ ipseclog((LOG_DEBUG, "key_spddump: No more memory.\n"));
+ error = ENOMEM;
+ goto end;
+ }
+ lck_mtx_lock(sadb_mutex);
+ /* search SPD entry, make list. */
+ sp_ptr = spbuf;
for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
LIST_FOREACH(sp, &sptree[dir], chain) {
+ if (cnt == bufcount) {
+ break; /* buffer full */
+ }
+ *sp_ptr++ = sp;
+ sp->refcnt++;
cnt++;
}
}
+ lck_mtx_unlock(sadb_mutex);
- if (cnt == 0)
- return key_senderror(so, m, ENOENT);
+ if (cnt == 0) {
+ error = ENOENT;
+ goto end;
+ }
- for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
- LIST_FOREACH(sp, &sptree[dir], chain) {
- --cnt;
- n = key_setdumpsp(sp, SADB_X_SPDDUMP, cnt,
- mhp->msg->sadb_msg_pid);
+ sp_ptr = spbuf;
+ while (cnt) {
+ --cnt;
+ n = key_setdumpsp(*sp_ptr++, SADB_X_SPDDUMP, cnt,
+ mhp->msg->sadb_msg_pid);
- if (n)
- key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
+ if (n) {
+ key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
}
}
+ lck_mtx_lock(sadb_mutex);
+ while (sp_ptr > spbuf) {
+ key_freesp(*(--sp_ptr), KEY_SADB_LOCKED);
+ }
+ lck_mtx_unlock(sadb_mutex);
+
+end:
+ if (spbuf) {
+ KFREE(spbuf);
+ }
+ if (error) {
+ return key_senderror(so, m, error);
+ }
+
m_freem(m);
return 0;
}
static struct mbuf *
-key_setdumpsp(sp, type, seq, pid)
- struct secpolicy *sp;
- u_int8_t type;
- u_int32_t seq, pid;
+key_setdumpsp(
+ struct secpolicy *sp,
+ u_int8_t msg_type,
+ u_int32_t seq,
+ u_int32_t pid)
{
struct mbuf *result = NULL, *m;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
- m = key_setsadbmsg(type, 0, SADB_SATYPE_UNSPEC, seq, pid, sp->refcnt);
- if (!m)
+ m = key_setsadbmsg(msg_type, 0, SADB_SATYPE_UNSPEC, seq, pid, (u_int16_t)sp->refcnt);
+ if (!m) {
goto fail;
+ }
result = m;
- m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
- (struct sockaddr *)&sp->spidx.src, sp->spidx.prefs,
- sp->spidx.ul_proto);
- if (!m)
- goto fail;
- m_cat(result, m);
-
- m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
- (struct sockaddr *)&sp->spidx.dst, sp->spidx.prefd,
- sp->spidx.ul_proto);
- if (!m)
- goto fail;
- m_cat(result, m);
-
- m = key_sp2msg(sp);
- if (!m)
- goto fail;
- m_cat(result, m);
-
- if ((result->m_flags & M_PKTHDR) == 0)
- goto fail;
+ if (sp->spidx.src_range.start.ss_len > 0) {
+ m = key_setsadbaddr(SADB_X_EXT_ADDR_RANGE_SRC_START,
+ (struct sockaddr *)&sp->spidx.src_range.start, sp->spidx.prefs,
+ sp->spidx.ul_proto);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
- if (result->m_len < sizeof(struct sadb_msg)) {
- result = m_pullup(result, sizeof(struct sadb_msg));
- if (result == NULL)
+ m = key_setsadbaddr(SADB_X_EXT_ADDR_RANGE_SRC_END,
+ (struct sockaddr *)&sp->spidx.src_range.end, sp->spidx.prefs,
+ sp->spidx.ul_proto);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
+ } else {
+ m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
+ (struct sockaddr *)&sp->spidx.src, sp->spidx.prefs,
+ sp->spidx.ul_proto);
+ if (!m) {
goto fail;
+ }
+ m_cat(result, m);
+ }
+
+ if (sp->spidx.dst_range.start.ss_len > 0) {
+ m = key_setsadbaddr(SADB_X_EXT_ADDR_RANGE_DST_START,
+ (struct sockaddr *)&sp->spidx.dst_range.start, sp->spidx.prefd,
+ sp->spidx.ul_proto);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
+
+ m = key_setsadbaddr(SADB_X_EXT_ADDR_RANGE_DST_END,
+ (struct sockaddr *)&sp->spidx.dst_range.end, sp->spidx.prefd,
+ sp->spidx.ul_proto);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
+ } else {
+ m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
+ (struct sockaddr *)&sp->spidx.dst, sp->spidx.prefd,
+ sp->spidx.ul_proto);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
+ }
+
+ if (sp->spidx.internal_if || sp->outgoing_if || sp->ipsec_if || sp->disabled) {
+ m = key_setsadbipsecif(sp->spidx.internal_if, sp->outgoing_if, sp->ipsec_if, sp->disabled);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
+ }
+
+ m = key_sp2msg(sp);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
+
+ if ((result->m_flags & M_PKTHDR) == 0) {
+ goto fail;
+ }
+
+ if (result->m_len < sizeof(struct sadb_msg)) {
+ result = m_pullup(result, sizeof(struct sadb_msg));
+ if (result == NULL) {
+ goto fail;
+ }
}
result->m_pkthdr.len = 0;
- for (m = result; m; m = m->m_next)
+ for (m = result; m; m = m->m_next) {
result->m_pkthdr.len += m->m_len;
+ }
+
+ if (PFKEY_UNIT64(result->m_pkthdr.len) >= UINT16_MAX) {
+ ipseclog((LOG_DEBUG, "key_setdumpsp: packet header length > UINT16_MAX\n"));
+ goto fail;
+ }
mtod(result, struct sadb_msg *)->sadb_msg_len =
- PFKEY_UNIT64(result->m_pkthdr.len);
+ (u_int16_t)PFKEY_UNIT64(result->m_pkthdr.len);
return result;
* get PFKEY message length for security policy and request.
*/
static u_int
-key_getspreqmsglen(sp)
- struct secpolicy *sp;
+key_getspreqmsglen(
+ struct secpolicy *sp)
{
u_int tlen;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
tlen = sizeof(struct sadb_x_policy);
/* if is the policy for ipsec ? */
- if (sp->policy != IPSEC_POLICY_IPSEC)
+ if (sp->policy != IPSEC_POLICY_IPSEC) {
return tlen;
+ }
/* get length of ipsec requests */
- {
- struct ipsecrequest *isr;
- int len;
+ {
+ struct ipsecrequest *isr;
+ int len;
- for (isr = sp->req; isr != NULL; isr = isr->next) {
- len = sizeof(struct sadb_x_ipsecrequest)
- + isr->saidx.src.ss_len
- + isr->saidx.dst.ss_len;
+ for (isr = sp->req; isr != NULL; isr = isr->next) {
+ len = sizeof(struct sadb_x_ipsecrequest)
+ + isr->saidx.src.ss_len
+ + isr->saidx.dst.ss_len;
- tlen += PFKEY_ALIGN8(len);
+ tlen += PFKEY_ALIGN8(len);
+ }
}
- }
return tlen;
}
* others : error number
*/
static int
-key_spdexpire(sp)
- struct secpolicy *sp;
+key_spdexpire(
+ struct secpolicy *sp)
{
- int s;
struct mbuf *result = NULL, *m;
int len;
- int error = -1;
+ int error = EINVAL;
struct sadb_lifetime *lt;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (sp == NULL)
+ if (sp == NULL) {
panic("key_spdexpire: NULL pointer is passed.\n");
+ }
/* set msg header */
m = key_setsadbmsg(SADB_X_SPDEXPIRE, 0, 0, 0, 0, 0);
/* create lifetime extension (current and hard) */
len = PFKEY_ALIGN8(sizeof(*lt)) * 2;
m = key_alloc_mbuf(len);
- if (!m || m->m_next) { /*XXX*/
- if (m)
+ if (!m || m->m_next) { /*XXX*/
+ if (m) {
m_freem(m);
+ }
error = ENOBUFS;
goto fail;
}
lt->sadb_lifetime_bytes = 0;
lt->sadb_lifetime_addtime = sp->created;
lt->sadb_lifetime_usetime = sp->lastused;
- lt = (struct sadb_lifetime *)(mtod(m, caddr_t) + len / 2);
+ lt = (struct sadb_lifetime *)(void *)(mtod(m, caddr_t) + len / 2);
lt->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
lt->sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
lt->sadb_lifetime_allocations = 0;
lt->sadb_lifetime_usetime = sp->validtime;
m_cat(result, m);
- /* set sadb_address for source */
- m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
- (struct sockaddr *)&sp->spidx.src,
- sp->spidx.prefs, sp->spidx.ul_proto);
- if (!m) {
- error = ENOBUFS;
- goto fail;
+ /* set sadb_address(es) for source */
+ if (sp->spidx.src_range.start.ss_len > 0) {
+ m = key_setsadbaddr(SADB_X_EXT_ADDR_RANGE_SRC_START,
+ (struct sockaddr *)&sp->spidx.src_range.start, sp->spidx.prefs,
+ sp->spidx.ul_proto);
+ if (!m) {
+ error = ENOBUFS;
+ goto fail;
+ }
+ m_cat(result, m);
+
+ m = key_setsadbaddr(SADB_X_EXT_ADDR_RANGE_SRC_END,
+ (struct sockaddr *)&sp->spidx.src_range.end, sp->spidx.prefs,
+ sp->spidx.ul_proto);
+ if (!m) {
+ error = ENOBUFS;
+ goto fail;
+ }
+ m_cat(result, m);
+ } else {
+ m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
+ (struct sockaddr *)&sp->spidx.src, sp->spidx.prefs,
+ sp->spidx.ul_proto);
+ if (!m) {
+ error = ENOBUFS;
+ goto fail;
+ }
+ m_cat(result, m);
}
- m_cat(result, m);
- /* set sadb_address for destination */
- m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
- (struct sockaddr *)&sp->spidx.dst,
- sp->spidx.prefd, sp->spidx.ul_proto);
- if (!m) {
- error = ENOBUFS;
- goto fail;
+ /* set sadb_address(es) for dest */
+ if (sp->spidx.dst_range.start.ss_len > 0) {
+ m = key_setsadbaddr(SADB_X_EXT_ADDR_RANGE_DST_START,
+ (struct sockaddr *)&sp->spidx.dst_range.start, sp->spidx.prefd,
+ sp->spidx.ul_proto);
+ if (!m) {
+ error = ENOBUFS;
+ goto fail;
+ }
+ m_cat(result, m);
+
+ m = key_setsadbaddr(SADB_X_EXT_ADDR_RANGE_DST_END,
+ (struct sockaddr *)&sp->spidx.dst_range.end, sp->spidx.prefd,
+ sp->spidx.ul_proto);
+ if (!m) {
+ error = ENOBUFS;
+ goto fail;
+ }
+ m_cat(result, m);
+ } else {
+ m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
+ (struct sockaddr *)&sp->spidx.dst, sp->spidx.prefd,
+ sp->spidx.ul_proto);
+ if (!m) {
+ error = ENOBUFS;
+ goto fail;
+ }
+ m_cat(result, m);
}
- m_cat(result, m);
/* set secpolicy */
m = key_sp2msg(sp);
}
result->m_pkthdr.len = 0;
- for (m = result; m; m = m->m_next)
+ for (m = result; m; m = m->m_next) {
result->m_pkthdr.len += m->m_len;
+ }
+
+ if (PFKEY_UNIT64(result->m_pkthdr.len) >= UINT16_MAX) {
+ ipseclog((LOG_DEBUG, "key_setdumpsp: packet header length > UINT16_MAX\n"));
+ goto fail;
+ }
mtod(result, struct sadb_msg *)->sadb_msg_len =
- PFKEY_UNIT64(result->m_pkthdr.len);
+ (u_int16_t)PFKEY_UNIT64(result->m_pkthdr.len);
return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
- fail:
- if (result)
+fail:
+ if (result) {
m_freem(result);
+ }
return error;
}
* others : pointer to new SA head.
*/
static struct secashead *
-key_newsah(saidx)
- struct secasindex *saidx;
+key_newsah(struct secasindex *saidx,
+ ifnet_t ipsec_if,
+ u_int outgoing_if,
+ u_int8_t dir,
+ u_int16_t flags)
{
struct secashead *newsah;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
/* sanity check */
- if (saidx == NULL)
+ if (saidx == NULL) {
panic("key_newsaidx: NULL pointer is passed.\n");
+ }
+
+ VERIFY(flags == SECURITY_ASSOCIATION_PFKEY || flags == SECURITY_ASSOCIATION_CUSTOM_IPSEC);
newsah = keydb_newsecashead();
- if (newsah == NULL)
+ if (newsah == NULL) {
return NULL;
+ }
bcopy(saidx, &newsah->saidx, sizeof(newsah->saidx));
+ /* remove the ports */
+ switch (saidx->src.ss_family) {
+ case AF_INET:
+ ((struct sockaddr_in *)(&newsah->saidx.src))->sin_port = IPSEC_PORT_ANY;
+ break;
+ case AF_INET6:
+ ((struct sockaddr_in6 *)(&newsah->saidx.src))->sin6_port = IPSEC_PORT_ANY;
+ break;
+ default:
+ break;
+ }
+ switch (saidx->dst.ss_family) {
+ case AF_INET:
+ ((struct sockaddr_in *)(&newsah->saidx.dst))->sin_port = IPSEC_PORT_ANY;
+ break;
+ case AF_INET6:
+ ((struct sockaddr_in6 *)(&newsah->saidx.dst))->sin6_port = IPSEC_PORT_ANY;
+ break;
+ default:
+ break;
+ }
+
+ newsah->outgoing_if = outgoing_if;
+ if (ipsec_if) {
+ ifnet_reference(ipsec_if);
+ newsah->ipsec_if = ipsec_if;
+ }
+ newsah->dir = dir;
/* add to saidxtree */
newsah->state = SADB_SASTATE_MATURE;
- LIST_INSERT_HEAD(&sahtree, newsah, chain);
+ newsah->flags = flags;
- return(newsah);
+ if (flags == SECURITY_ASSOCIATION_PFKEY) {
+ LIST_INSERT_HEAD(&sahtree, newsah, chain);
+ } else {
+ LIST_INSERT_HEAD(&custom_sahtree, newsah, chain);
+ }
+ key_start_timehandler();
+
+ return newsah;
}
/*
* delete SA index and all SA registerd.
*/
-static void
-key_delsah(sah)
- struct secashead *sah;
+void
+key_delsah(
+ struct secashead *sah)
{
struct secasvar *sav, *nextsav;
u_int stateidx, state;
- int s;
int zombie = 0;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
/* sanity check */
- if (sah == NULL)
+ if (sah == NULL) {
panic("key_delsah: NULL pointer is passed.\n");
+ }
- s = splnet(); /*called from softclock()*/
+ if (sah->use_count > 0) {
+ return;
+ }
/* searching all SA registerd in the secindex. */
for (stateidx = 0;
- stateidx < _ARRAYLEN(saorder_state_any);
- stateidx++) {
-
+ stateidx < _ARRAYLEN(saorder_state_any);
+ stateidx++) {
state = saorder_state_any[stateidx];
for (sav = (struct secasvar *)LIST_FIRST(&sah->savtree[state]);
- sav != NULL;
- sav = nextsav) {
-
+ sav != NULL;
+ sav = nextsav) {
nextsav = LIST_NEXT(sav, chain);
if (sav->refcnt > 0) {
/* sanity check */
KEY_CHKSASTATE(state, sav->state, "key_delsah");
- key_freesav(sav);
+ key_freesav(sav, KEY_SADB_LOCKED);
/* remove back pointer */
sav->sah = NULL;
/* don't delete sah only if there are savs. */
if (zombie) {
- splx(s);
return;
}
- if (sah->sa_route.ro_rt) {
- rtfree(sah->sa_route.ro_rt);
- sah->sa_route.ro_rt = (struct rtentry *)NULL;
+ ROUTE_RELEASE(&sah->sa_route);
+
+ if (sah->ipsec_if) {
+ ifnet_release(sah->ipsec_if);
+ sah->ipsec_if = NULL;
}
/* remove from tree of SA index */
- if (__LIST_CHAINED(sah))
+ if (__LIST_CHAINED(sah)) {
LIST_REMOVE(sah, chain);
+ }
KFREE(sah);
- splx(s);
return;
}
* does not modify mbuf. does not free mbuf on error.
*/
static struct secasvar *
-key_newsav(m, mhp, sah, errp)
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
- struct secashead *sah;
- int *errp;
+key_newsav(
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp,
+ struct secashead *sah,
+ int *errp,
+ struct socket *so)
{
struct secasvar *newsav;
const struct sadb_sa *xsa;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
/* sanity check */
- if (m == NULL || mhp == NULL || mhp->msg == NULL || sah == NULL)
+ if (m == NULL || mhp == NULL || mhp->msg == NULL || sah == NULL) {
panic("key_newsa: NULL pointer is passed.\n");
+ }
- KMALLOC(newsav, struct secasvar *, sizeof(struct secasvar));
+ KMALLOC_NOWAIT(newsav, struct secasvar *, sizeof(struct secasvar));
if (newsav == NULL) {
- ipseclog((LOG_DEBUG, "key_newsa: No more memory.\n"));
- *errp = ENOBUFS;
- return NULL;
+ lck_mtx_unlock(sadb_mutex);
+ KMALLOC_WAIT(newsav, struct secasvar *, sizeof(struct secasvar));
+ lck_mtx_lock(sadb_mutex);
+ if (newsav == NULL) {
+ ipseclog((LOG_DEBUG, "key_newsa: No more memory.\n"));
+ *errp = ENOBUFS;
+ return NULL;
+ }
}
bzero((caddr_t)newsav, sizeof(struct secasvar));
switch (mhp->msg->sadb_msg_type) {
case SADB_GETSPI:
key_setspi(newsav, 0);
-
-#if IPSEC_DOSEQCHECK
- /* sync sequence number */
- if (mhp->msg->sadb_msg_seq == 0)
- newsav->seq =
- (acq_seq = (acq_seq == ~0 ? 1 : ++acq_seq));
- else
-#endif
- newsav->seq = mhp->msg->sadb_msg_seq;
+ newsav->seq = mhp->msg->sadb_msg_seq;
break;
case SADB_ADD:
/* sanity check */
if (mhp->ext[SADB_EXT_SA] == NULL) {
- KFREE(newsav);
+ key_delsav(newsav);
ipseclog((LOG_DEBUG, "key_newsa: invalid message is passed.\n"));
*errp = EINVAL;
return NULL;
}
- xsa = (const struct sadb_sa *)mhp->ext[SADB_EXT_SA];
+ xsa = (struct sadb_sa *)(void *)mhp->ext[SADB_EXT_SA];
key_setspi(newsav, xsa->sadb_sa_spi);
newsav->seq = mhp->msg->sadb_msg_seq;
break;
default:
- KFREE(newsav);
+ key_delsav(newsav);
*errp = EINVAL;
return NULL;
}
+ if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
+ if (((struct sadb_x_sa2 *)(void *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_alwaysexpire) {
+ newsav->always_expire = 1;
+ }
+ newsav->flags2 = ((struct sadb_x_sa2 *)(void *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_flags;
+ if (newsav->flags2 & SADB_X_EXT_SA2_DELETE_ON_DETACH) {
+ newsav->so = so;
+ }
+ }
+
/* copy sav values */
if (mhp->msg->sadb_msg_type != SADB_GETSPI) {
*errp = key_setsaval(newsav, m, mhp);
if (*errp) {
- if (newsav->spihash.le_prev || newsav->spihash.le_next)
- LIST_REMOVE(newsav, spihash);
- KFREE(newsav);
+ key_delsav(newsav);
return NULL;
}
+ } else {
+ /* For get SPI, if has a hard lifetime, apply */
+ const struct sadb_lifetime *lft0;
+ struct timeval tv;
+
+ lft0 = (struct sadb_lifetime *)(void *)mhp->ext[SADB_EXT_LIFETIME_HARD];
+ if (lft0 != NULL) {
+ /* make lifetime for CURRENT */
+ KMALLOC_NOWAIT(newsav->lft_c, struct sadb_lifetime *,
+ sizeof(struct sadb_lifetime));
+ if (newsav->lft_c == NULL) {
+ lck_mtx_unlock(sadb_mutex);
+ KMALLOC_WAIT(newsav->lft_c, struct sadb_lifetime *,
+ sizeof(struct sadb_lifetime));
+ lck_mtx_lock(sadb_mutex);
+ if (newsav->lft_c == NULL) {
+ ipseclog((LOG_DEBUG, "key_newsa: No more memory.\n"));
+ key_delsav(newsav);
+ *errp = ENOBUFS;
+ return NULL;
+ }
+ }
+
+ microtime(&tv);
+
+ newsav->lft_c->sadb_lifetime_len = PFKEY_UNIT64(sizeof(struct sadb_lifetime));
+ newsav->lft_c->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT;
+ newsav->lft_c->sadb_lifetime_allocations = 0;
+ newsav->lft_c->sadb_lifetime_bytes = 0;
+ newsav->lft_c->sadb_lifetime_addtime = tv.tv_sec;
+ newsav->lft_c->sadb_lifetime_usetime = 0;
+
+ if (mhp->extlen[SADB_EXT_LIFETIME_HARD] < sizeof(*lft0)) {
+ ipseclog((LOG_DEBUG, "key_newsa: invalid hard lifetime ext len.\n"));
+ key_delsav(newsav);
+ *errp = EINVAL;
+ return NULL;
+ }
+ newsav->lft_h = (struct sadb_lifetime *)key_newbuf(lft0, sizeof(*lft0));
+ if (newsav->lft_h == NULL) {
+ ipseclog((LOG_DEBUG, "key_newsa: No more memory.\n"));
+ key_delsav(newsav);
+ *errp = ENOBUFS;
+ return NULL;
+ }
+ }
}
/* reset created */
- {
- struct timeval tv;
- microtime(&tv);
- newsav->created = tv.tv_sec;
- }
+ {
+ struct timeval tv;
+ microtime(&tv);
+ newsav->created = tv.tv_sec;
+ }
newsav->pid = mhp->msg->sadb_msg_pid;
newsav->refcnt = 1;
newsav->state = SADB_SASTATE_LARVAL;
LIST_INSERT_TAIL(&sah->savtree[SADB_SASTATE_LARVAL], newsav,
- secasvar, chain);
+ secasvar, chain);
+ ipsec_sav_count++;
+ ipsec_monitor_sleep_wake();
return newsav;
}
-/*
- * free() SA variable entry.
- */
+static int
+key_migratesav(struct secasvar *sav,
+ struct secashead *newsah)
+{
+ if (sav == NULL || newsah == NULL || sav->state != SADB_SASTATE_MATURE) {
+ return EINVAL;
+ }
+
+ /* remove from SA header */
+ if (__LIST_CHAINED(sav)) {
+ LIST_REMOVE(sav, chain);
+ }
+
+ sav->sah = newsah;
+ LIST_INSERT_TAIL(&newsah->savtree[SADB_SASTATE_MATURE], sav, secasvar, chain);
+ return 0;
+}
+
static void
-key_delsav(sav)
- struct secasvar *sav;
+key_reset_sav(struct secasvar *sav)
{
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
/* sanity check */
- if (sav == NULL)
+ if (sav == NULL) {
panic("key_delsav: NULL pointer is passed.\n");
+ }
- if (sav->refcnt > 0)
- return; /* can't free */
-
- /* remove from SA header */
- if (__LIST_CHAINED(sav))
- LIST_REMOVE(sav, chain);
-
- if (sav->spihash.le_prev || sav->spihash.le_next)
- LIST_REMOVE(sav, spihash);
+ sav->remote_ike_port = 0;
+ sav->natt_encapsulated_src_port = 0;
if (sav->key_auth != NULL) {
bzero(_KEYBUF(sav->key_auth), _KEYLEN(sav->key_auth));
bzero(sav->sched, sav->schedlen);
KFREE(sav->sched);
sav->sched = NULL;
+ sav->schedlen = 0;
}
- if (sav->replay != NULL) {
- keydb_delsecreplay(sav->replay);
- sav->replay = NULL;
+
+ for (int i = 0; i < MAX_REPLAY_WINDOWS; i++) {
+ if (sav->replay[i] != NULL) {
+ keydb_delsecreplay(sav->replay[i]);
+ sav->replay[i] = NULL;
+ }
}
if (sav->lft_c != NULL) {
KFREE(sav->lft_c);
sav->iv = NULL;
}
+ return;
+}
+
+/*
+ * free() SA variable entry.
+ */
+void
+key_delsav(
+ struct secasvar *sav)
+{
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+
+ /* sanity check */
+ if (sav == NULL) {
+ panic("key_delsav: NULL pointer is passed.\n");
+ }
+
+ if (sav->refcnt > 0) {
+ return; /* can't free */
+ }
+ /* remove from SA header */
+ if (__LIST_CHAINED(sav)) {
+ LIST_REMOVE(sav, chain);
+ ipsec_sav_count--;
+ }
+
+ if (sav->spihash.le_prev || sav->spihash.le_next) {
+ LIST_REMOVE(sav, spihash);
+ }
+
+ key_reset_sav(sav);
+
KFREE(sav);
return;
* others : found, pointer to a SA.
*/
static struct secashead *
-key_getsah(saidx)
- struct secasindex *saidx;
+key_getsah(struct secasindex *saidx, u_int16_t flags)
{
struct secashead *sah;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
- LIST_FOREACH(sah, &sahtree, chain) {
- if (sah->state == SADB_SASTATE_DEAD)
- continue;
- if (key_cmpsaidx(&sah->saidx, saidx, CMP_REQID))
- return sah;
+ if ((flags & SECURITY_ASSOCIATION_ANY) == SECURITY_ASSOCIATION_ANY ||
+ (flags & SECURITY_ASSOCIATION_PFKEY) == SECURITY_ASSOCIATION_PFKEY) {
+ LIST_FOREACH(sah, &sahtree, chain) {
+ if (sah->state == SADB_SASTATE_DEAD) {
+ continue;
+ }
+ if (key_cmpsaidx(&sah->saidx, saidx, CMP_REQID)) {
+ return sah;
+ }
+ }
+ }
+
+ if ((flags & SECURITY_ASSOCIATION_ANY) == SECURITY_ASSOCIATION_ANY ||
+ (flags & SECURITY_ASSOCIATION_PFKEY) == SECURITY_ASSOCIATION_CUSTOM_IPSEC) {
+ LIST_FOREACH(sah, &custom_sahtree, chain) {
+ if (sah->state == SADB_SASTATE_DEAD) {
+ continue;
+ }
+ if (key_cmpsaidx(&sah->saidx, saidx, 0)) {
+ return sah;
+ }
+ }
}
return NULL;
}
+struct secashead *
+key_newsah2(struct secasindex *saidx,
+ u_int8_t dir)
+{
+ struct secashead *sah;
+
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+
+ sah = key_getsah(saidx, SECURITY_ASSOCIATION_ANY);
+ if (!sah) {
+ return key_newsah(saidx, NULL, 0, dir, SECURITY_ASSOCIATION_PFKEY);
+ }
+ return sah;
+}
+
/*
* check not to be duplicated SPI.
* NOTE: this function is too slow due to searching all SAD.
* others : found, pointer to a SA.
*/
static struct secasvar *
-key_checkspidup(saidx, spi)
- struct secasindex *saidx;
- u_int32_t spi;
+key_checkspidup(
+ struct secasindex *saidx,
+ u_int32_t spi)
{
struct secasvar *sav;
u_int stateidx, state;
-
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
/* check address family */
if (saidx->src.ss_family != saidx->dst.ss_family) {
/* check all SAD */
LIST_FOREACH(sav, &spihash[SPIHASH(spi)], spihash) {
- if (sav->spi != spi)
+ if (sav->spi != spi) {
continue;
+ }
for (stateidx = 0;
- stateidx < _ARRAYLEN(saorder_state_alive);
- stateidx++) {
+ stateidx < _ARRAYLEN(saorder_state_alive);
+ stateidx++) {
state = saorder_state_alive[stateidx];
if (sav->state == state &&
- key_ismyaddr((struct sockaddr *)&sav->sah->saidx.dst))
+ key_ismyaddr((struct sockaddr *)&sav->sah->saidx.dst)) {
return sav;
+ }
}
}
}
static void
-key_setspi(sav, spi)
- struct secasvar *sav;
- u_int32_t spi;
+key_setspi(
+ struct secasvar *sav,
+ u_int32_t spi)
{
-
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
sav->spi = spi;
- if (sav->spihash.le_prev || sav->spihash.le_next)
+ if (sav->spihash.le_prev || sav->spihash.le_next) {
LIST_REMOVE(sav, spihash);
+ }
LIST_INSERT_HEAD(&spihash[SPIHASH(spi)], sav, spihash);
}
* others : found, pointer to a SA.
*/
static struct secasvar *
-key_getsavbyspi(sah, spi)
- struct secashead *sah;
- u_int32_t spi;
+key_getsavbyspi(
+ struct secashead *sah,
+ u_int32_t spi)
{
struct secasvar *sav, *match;
u_int stateidx, state, matchidx;
-
+
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
match = NULL;
matchidx = _ARRAYLEN(saorder_state_alive);
LIST_FOREACH(sav, &spihash[SPIHASH(spi)], spihash) {
- if (sav->spi != spi)
+ if (sav->spi != spi) {
continue;
- if (sav->sah != sah)
+ }
+ if (sav->sah != sah) {
continue;
+ }
for (stateidx = 0; stateidx < matchidx; stateidx++) {
state = saorder_state_alive[stateidx];
if (sav->state == state) {
* does not modify mbuf. does not free mbuf on error.
*/
static int
-key_setsaval(sav, m, mhp)
- struct secasvar *sav;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_setsaval(
+ struct secasvar *sav,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
#if IPSEC_ESP
const struct esp_algorithm *algo;
int error = 0;
struct timeval tv;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
/* sanity check */
- if (m == NULL || mhp == NULL || mhp->msg == NULL)
+ if (m == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_setsaval: NULL pointer is passed.\n");
+ }
/* initialization */
- sav->replay = NULL;
- sav->key_auth = NULL;
- sav->key_enc = NULL;
- sav->sched = NULL;
- sav->schedlen = 0;
- sav->iv = NULL;
- sav->lft_c = NULL;
- sav->lft_h = NULL;
- sav->lft_s = NULL;
- sav->remote_ike_port = 0;
+ key_reset_sav(sav);
sav->natt_last_activity = natt_now;
/* SA */
if (mhp->ext[SADB_EXT_SA] != NULL) {
const struct sadb_sa *sa0;
- sa0 = (const struct sadb_sa *)mhp->ext[SADB_EXT_SA];
+ sa0 = (struct sadb_sa *)(void *)mhp->ext[SADB_EXT_SA];
if (mhp->extlen[SADB_EXT_SA] < sizeof(*sa0)) {
ipseclog((LOG_DEBUG, "key_setsaval: invalid message size.\n"));
error = EINVAL;
sav->alg_auth = sa0->sadb_sa_auth;
sav->alg_enc = sa0->sadb_sa_encrypt;
sav->flags = sa0->sadb_sa_flags;
-
+
/*
* Verify that a nat-traversal port was specified if
* the nat-traversal flag is set.
*/
if ((sav->flags & SADB_X_EXT_NATT) != 0) {
if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa_2) ||
- ((struct sadb_sa_2*)(sa0))->sadb_sa_natt_port == 0) {
+ ((const struct sadb_sa_2*)(sa0))->sadb_sa_natt_port == 0) {
ipseclog((LOG_DEBUG, "key_setsaval: natt port not set.\n"));
error = EINVAL;
goto fail;
}
- sav->remote_ike_port = ((struct sadb_sa_2*)(sa0))->sadb_sa_natt_port;
+ sav->natt_encapsulated_src_port = ((const struct sadb_sa_2*)(sa0))->sadb_sa_natt_src_port;
+ sav->remote_ike_port = ((const struct sadb_sa_2*)(sa0))->sadb_sa_natt_port;
+ sav->natt_interval = ((const struct sadb_sa_2*)(sa0))->sadb_sa_natt_interval;
+ sav->natt_offload_interval = ((const struct sadb_sa_2*)(sa0))->sadb_sa_natt_offload_interval;
+ }
+
+ /*
+ * Verify if SADB_X_EXT_NATT_MULTIPLEUSERS flag is set that
+ * SADB_X_EXT_NATT is set and SADB_X_EXT_NATT_KEEPALIVE is not
+ * set (we're not behind nat) - otherwise clear it.
+ */
+ if ((sav->flags & SADB_X_EXT_NATT_MULTIPLEUSERS) != 0) {
+ if ((sav->flags & SADB_X_EXT_NATT) == 0 ||
+ (sav->flags & SADB_X_EXT_NATT_KEEPALIVE) != 0) {
+ sav->flags &= ~SADB_X_EXT_NATT_MULTIPLEUSERS;
+ }
}
/* replay window */
if ((sa0->sadb_sa_flags & SADB_X_EXT_OLD) == 0) {
- sav->replay = keydb_newsecreplay(sa0->sadb_sa_replay);
- if (sav->replay == NULL) {
- ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
- error = ENOBUFS;
- goto fail;
+ if ((sav->flags2 & SADB_X_EXT_SA2_SEQ_PER_TRAFFIC_CLASS) ==
+ SADB_X_EXT_SA2_SEQ_PER_TRAFFIC_CLASS) {
+ uint32_t range = (1ULL << (sizeof(((struct secreplay *)0)->count) * 8)) / MAX_REPLAY_WINDOWS;
+ for (int i = 0; i < MAX_REPLAY_WINDOWS; i++) {
+ sav->replay[i] = keydb_newsecreplay(sa0->sadb_sa_replay);
+ if (sav->replay[i] == NULL) {
+ ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
+ error = ENOBUFS;
+ goto fail;
+ }
+ /* Allowed range for sequence per traffic class */
+ sav->replay[i]->count = i * range;
+ sav->replay[i]->lastseq = ((i + 1) * range) - 1;
+ }
+ } else {
+ sav->replay[0] = keydb_newsecreplay(sa0->sadb_sa_replay);
+ if (sav->replay[0] == NULL) {
+ ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
+ error = ENOBUFS;
+ goto fail;
+ }
+ sav->replay[0]->lastseq = ~0;
}
}
}
case SADB_SATYPE_AH:
case SADB_SATYPE_ESP:
if (len == PFKEY_ALIGN8(sizeof(struct sadb_key)) &&
- sav->alg_auth != SADB_X_AALG_NULL)
+ sav->alg_auth != SADB_X_AALG_NULL) {
error = EINVAL;
+ }
break;
- case SADB_X_SATYPE_IPCOMP:
default:
error = EINVAL;
break;
case SADB_SATYPE_ESP:
if (len == PFKEY_ALIGN8(sizeof(struct sadb_key)) &&
sav->alg_enc != SADB_EALG_NULL) {
- ipseclog((LOG_DEBUG, "key_setsaval: invalid ESP algorithm.\n"));
+ ipseclog((LOG_DEBUG, "key_setsaval: invalid ESP algorithm.\n"));
error = EINVAL;
break;
}
goto fail;
}
break;
- case SADB_X_SATYPE_IPCOMP:
- if (len != PFKEY_ALIGN8(sizeof(struct sadb_key)))
- error = EINVAL;
- sav->key_enc = NULL; /*just in case*/
- break;
case SADB_SATYPE_AH:
default:
error = EINVAL;
case SADB_SATYPE_ESP:
#if IPSEC_ESP
algo = esp_algorithm_lookup(sav->alg_enc);
- if (algo && algo->ivlen)
+ if (algo && algo->ivlen) {
sav->ivlen = (*algo->ivlen)(algo, sav);
- if (sav->ivlen == 0)
+ }
+ if (sav->ivlen == 0) {
break;
- KMALLOC(sav->iv, caddr_t, sav->ivlen);
+ }
+ KMALLOC_NOWAIT(sav->iv, caddr_t, sav->ivlen);
if (sav->iv == 0) {
- ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
- error = ENOBUFS;
- goto fail;
+ lck_mtx_unlock(sadb_mutex);
+ KMALLOC_WAIT(sav->iv, caddr_t, sav->ivlen);
+ lck_mtx_lock(sadb_mutex);
+ if (sav->iv == 0) {
+ ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
+ error = ENOBUFS;
+ goto fail;
+ }
}
/* initialize */
- key_randomfill(sav->iv, sav->ivlen);
+ if (sav->alg_enc == SADB_X_EALG_AES_GCM) {
+ bzero(sav->iv, sav->ivlen);
+ } else {
+ key_randomfill(sav->iv, sav->ivlen);
+ }
#endif
break;
case SADB_SATYPE_AH:
- case SADB_X_SATYPE_IPCOMP:
break;
default:
ipseclog((LOG_DEBUG, "key_setsaval: invalid SA type.\n"));
sav->created = tv.tv_sec;
/* make lifetime for CURRENT */
- KMALLOC(sav->lft_c, struct sadb_lifetime *,
+ KMALLOC_NOWAIT(sav->lft_c, struct sadb_lifetime *,
sizeof(struct sadb_lifetime));
if (sav->lft_c == NULL) {
- ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
- error = ENOBUFS;
- goto fail;
+ lck_mtx_unlock(sadb_mutex);
+ KMALLOC_WAIT(sav->lft_c, struct sadb_lifetime *,
+ sizeof(struct sadb_lifetime));
+ lck_mtx_lock(sadb_mutex);
+ if (sav->lft_c == NULL) {
+ ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
+ error = ENOBUFS;
+ goto fail;
+ }
}
microtime(&tv);
sav->lft_c->sadb_lifetime_usetime = 0;
/* lifetimes for HARD and SOFT */
- {
- const struct sadb_lifetime *lft0;
+ {
+ const struct sadb_lifetime *lft0;
- lft0 = (struct sadb_lifetime *)mhp->ext[SADB_EXT_LIFETIME_HARD];
- if (lft0 != NULL) {
- if (mhp->extlen[SADB_EXT_LIFETIME_HARD] < sizeof(*lft0)) {
- ipseclog((LOG_DEBUG, "key_setsaval: invalid hard lifetime ext len.\n"));
- error = EINVAL;
- goto fail;
- }
- sav->lft_h = (struct sadb_lifetime *)key_newbuf(lft0,
- sizeof(*lft0));
- if (sav->lft_h == NULL) {
- ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
- error = ENOBUFS;
- goto fail;
+ lft0 = (struct sadb_lifetime *)
+ (void *)mhp->ext[SADB_EXT_LIFETIME_HARD];
+ if (lft0 != NULL) {
+ if (mhp->extlen[SADB_EXT_LIFETIME_HARD] < sizeof(*lft0)) {
+ ipseclog((LOG_DEBUG, "key_setsaval: invalid hard lifetime ext len.\n"));
+ error = EINVAL;
+ goto fail;
+ }
+ sav->lft_h = (struct sadb_lifetime *)key_newbuf(lft0,
+ sizeof(*lft0));
+ if (sav->lft_h == NULL) {
+ ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
+ error = ENOBUFS;
+ goto fail;
+ }
+ /* to be initialize ? */
}
- /* to be initialize ? */
- }
- lft0 = (struct sadb_lifetime *)mhp->ext[SADB_EXT_LIFETIME_SOFT];
- if (lft0 != NULL) {
- if (mhp->extlen[SADB_EXT_LIFETIME_SOFT] < sizeof(*lft0)) {
- ipseclog((LOG_DEBUG, "key_setsaval: invalid soft lifetime ext len.\n"));
- error = EINVAL;
- goto fail;
- }
- sav->lft_s = (struct sadb_lifetime *)key_newbuf(lft0,
- sizeof(*lft0));
- if (sav->lft_s == NULL) {
- ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
- error = ENOBUFS;
- goto fail;
+ lft0 = (struct sadb_lifetime *)
+ (void *)mhp->ext[SADB_EXT_LIFETIME_SOFT];
+ if (lft0 != NULL) {
+ if (mhp->extlen[SADB_EXT_LIFETIME_SOFT] < sizeof(*lft0)) {
+ ipseclog((LOG_DEBUG, "key_setsaval: invalid soft lifetime ext len.\n"));
+ error = EINVAL;
+ goto fail;
+ }
+ sav->lft_s = (struct sadb_lifetime *)key_newbuf(lft0,
+ sizeof(*lft0));
+ if (sav->lft_s == NULL) {
+ ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n"));
+ error = ENOBUFS;
+ goto fail;
+ }
+ /* to be initialize ? */
}
- /* to be initialize ? */
}
- }
return 0;
- fail:
- /* initialization */
- if (sav->replay != NULL) {
- keydb_delsecreplay(sav->replay);
- sav->replay = NULL;
- }
- if (sav->key_auth != NULL) {
- bzero(_KEYBUF(sav->key_auth), _KEYLEN(sav->key_auth));
- KFREE(sav->key_auth);
- sav->key_auth = NULL;
- }
- if (sav->key_enc != NULL) {
- bzero(_KEYBUF(sav->key_enc), _KEYLEN(sav->key_enc));
- KFREE(sav->key_enc);
- sav->key_enc = NULL;
- }
- if (sav->sched) {
- bzero(sav->sched, sav->schedlen);
- KFREE(sav->sched);
- sav->sched = NULL;
- }
- if (sav->iv != NULL) {
- KFREE(sav->iv);
- sav->iv = NULL;
- }
- if (sav->lft_c != NULL) {
- KFREE(sav->lft_c);
- sav->lft_c = NULL;
- }
- if (sav->lft_h != NULL) {
- KFREE(sav->lft_h);
- sav->lft_h = NULL;
- }
- if (sav->lft_s != NULL) {
- KFREE(sav->lft_s);
- sav->lft_s = NULL;
- }
-
+fail:
+ key_reset_sav(sav);
return error;
}
* other: errno
*/
static int
-key_mature(sav)
- struct secasvar *sav;
+key_mature(
+ struct secasvar *sav)
{
int mature;
- int checkmask = 0; /* 2^0: ealg 2^1: aalg 2^2: calg */
- int mustmask = 0; /* 2^0: ealg 2^1: aalg 2^2: calg */
+ int checkmask = 0; /* 2^0: ealg 2^1: aalg 2^2: calg */
+ int mustmask = 0; /* 2^0: ealg 2^1: aalg 2^2: calg */
mature = 0;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
/* check SPI value */
switch (sav->sah->saidx.proto) {
case IPPROTO_ESP:
case IPPROTO_AH:
- if (ntohl(sav->spi) >= 0 && ntohl(sav->spi) <= 255) {
+
+ /* No reason to test if this is >= 0, because ntohl(sav->spi) is unsigned. */
+ if (ntohl(sav->spi) <= 255) {
ipseclog((LOG_DEBUG,
"key_mature: illegal range of SPI %u.\n",
(u_int32_t)ntohl(sav->spi)));
case IPPROTO_ESP:
/* check flags */
if ((sav->flags & SADB_X_EXT_OLD)
- && (sav->flags & SADB_X_EXT_DERIV)) {
+ && (sav->flags & SADB_X_EXT_DERIV)) {
ipseclog((LOG_DEBUG, "key_mature: "
"invalid flag (derived) given to old-esp.\n"));
return EINVAL;
}
- if (sav->alg_auth == SADB_AALG_NONE)
+ if (sav->alg_auth == SADB_AALG_NONE) {
checkmask = 1;
- else
+ } else {
checkmask = 3;
+ }
mustmask = 1;
break;
case IPPROTO_AH:
if (sav->alg_enc != SADB_EALG_NONE) {
ipseclog((LOG_DEBUG, "key_mature: "
"protocol and algorithm mismated.\n"));
- return(EINVAL);
+ return EINVAL;
}
checkmask = 2;
mustmask = 2;
break;
- case IPPROTO_IPCOMP:
- if (sav->alg_auth != SADB_AALG_NONE) {
- ipseclog((LOG_DEBUG, "key_mature: "
- "protocol and algorithm mismated.\n"));
- return(EINVAL);
- }
- if ((sav->flags & SADB_X_EXT_RAWCPI) == 0
- && ntohl(sav->spi) >= 0x10000) {
- ipseclog((LOG_DEBUG, "key_mature: invalid cpi for IPComp.\n"));
- return(EINVAL);
- }
- checkmask = 4;
- mustmask = 4;
- break;
default:
ipseclog((LOG_DEBUG, "key_mature: Invalid satype.\n"));
return EPROTONOSUPPORT;
algo = ah_algorithm_lookup(sav->alg_auth);
if (!algo) {
- ipseclog((LOG_DEBUG,"key_mature: "
+ ipseclog((LOG_DEBUG, "key_mature: "
"unknown authentication algorithm.\n"));
return EINVAL;
}
/* algorithm-dependent check */
- if (sav->key_auth)
+ if (sav->key_auth) {
keylen = sav->key_auth->sadb_key_bits;
- else
+ } else {
keylen = 0;
+ }
if (keylen < algo->keymin || algo->keymax < keylen) {
ipseclog((LOG_DEBUG,
"key_mature: invalid AH key length %d "
if ((*algo->mature)(sav)) {
/* message generated in per-algorithm function*/
return EINVAL;
- } else
+ } else {
mature = SADB_SATYPE_AH;
+ }
}
- if ((mustmask & 2) != 0 && mature != SADB_SATYPE_AH) {
+ if ((mustmask & 2) != 0 && mature != SADB_SATYPE_AH) {
ipseclog((LOG_DEBUG, "key_mature: no satisfy algorithm for AH\n"));
return EINVAL;
}
}
/* algorithm-dependent check */
- if (sav->key_enc)
+ if (sav->key_enc) {
keylen = sav->key_enc->sadb_key_bits;
- else
+ } else {
keylen = 0;
+ }
if (keylen < algo->keymin || algo->keymax < keylen) {
ipseclog((LOG_DEBUG,
"key_mature: invalid ESP key length %d "
if ((*algo->mature)(sav)) {
/* message generated in per-algorithm function*/
return EINVAL;
- } else
+ } else {
mature = SADB_SATYPE_ESP;
+ }
}
- if ((mustmask & 1) != 0 && mature != SADB_SATYPE_ESP) {
+ if ((mustmask & 1) != 0 && mature != SADB_SATYPE_ESP) {
ipseclog((LOG_DEBUG, "key_mature: no satisfy algorithm for ESP\n"));
return EINVAL;
}
#endif
}
- /* check compression algorithm */
- if ((checkmask & 4) != 0) {
- const struct ipcomp_algorithm *algo;
-
- /* algorithm-dependent check */
- algo = ipcomp_algorithm_lookup(sav->alg_enc);
- if (!algo) {
- ipseclog((LOG_DEBUG, "key_mature: unknown compression algorithm.\n"));
- return EINVAL;
- }
- }
-
key_sa_chgstate(sav, SADB_SASTATE_MATURE);
return 0;
* subroutine for SADB_GET and SADB_DUMP.
*/
static struct mbuf *
-key_setdumpsa(sav, type, satype, seq, pid)
- struct secasvar *sav;
- u_int8_t type, satype;
- u_int32_t seq, pid;
+key_setdumpsa(
+ struct secasvar *sav,
+ u_int8_t type,
+ u_int8_t satype,
+ u_int32_t seq,
+ u_int32_t pid)
{
struct mbuf *result = NULL, *tres = NULL, *m;
int l = 0;
SADB_EXT_IDENTITY_DST, SADB_EXT_SENSITIVITY,
};
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
- m = key_setsadbmsg(type, 0, satype, seq, pid, sav->refcnt);
- if (m == NULL)
+ m = key_setsadbmsg(type, 0, satype, seq, pid, (u_int16_t)sav->refcnt);
+ if (m == NULL) {
goto fail;
+ }
result = m;
- for (i = sizeof(dumporder)/sizeof(dumporder[0]) - 1; i >= 0; i--) {
+ for (i = sizeof(dumporder) / sizeof(dumporder[0]) - 1; i >= 0; i--) {
m = NULL;
p = NULL;
switch (dumporder[i]) {
case SADB_EXT_SA:
m = key_setsadbsa(sav);
- if (!m)
+ if (!m) {
goto fail;
+ }
break;
case SADB_X_EXT_SA2:
m = key_setsadbxsa2(sav->sah->saidx.mode,
- sav->replay ? sav->replay->count : 0,
- sav->sah->saidx.reqid);
- if (!m)
+ sav->replay[0] ? sav->replay[0]->count : 0,
+ sav->sah->saidx.reqid,
+ sav->flags2);
+ if (!m) {
goto fail;
+ }
break;
case SADB_EXT_ADDRESS_SRC:
m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
(struct sockaddr *)&sav->sah->saidx.src,
FULLMASK, IPSEC_ULPROTO_ANY);
- if (!m)
+ if (!m) {
goto fail;
+ }
break;
case SADB_EXT_ADDRESS_DST:
m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
(struct sockaddr *)&sav->sah->saidx.dst,
FULLMASK, IPSEC_ULPROTO_ANY);
- if (!m)
+ if (!m) {
goto fail;
+ }
break;
case SADB_EXT_KEY_AUTH:
- if (!sav->key_auth)
+ if (!sav->key_auth) {
continue;
+ }
l = PFKEY_UNUNIT64(sav->key_auth->sadb_key_len);
p = sav->key_auth;
break;
case SADB_EXT_KEY_ENCRYPT:
- if (!sav->key_enc)
+ if (!sav->key_enc) {
continue;
+ }
l = PFKEY_UNUNIT64(sav->key_enc->sadb_key_len);
p = sav->key_enc;
break;
case SADB_EXT_LIFETIME_CURRENT:
- if (!sav->lft_c)
+ if (!sav->lft_c) {
continue;
+ }
l = PFKEY_UNUNIT64(((struct sadb_ext *)sav->lft_c)->sadb_ext_len);
p = sav->lft_c;
break;
case SADB_EXT_LIFETIME_HARD:
- if (!sav->lft_h)
+ if (!sav->lft_h) {
continue;
+ }
l = PFKEY_UNUNIT64(((struct sadb_ext *)sav->lft_h)->sadb_ext_len);
p = sav->lft_h;
break;
case SADB_EXT_LIFETIME_SOFT:
- if (!sav->lft_s)
+ if (!sav->lft_s) {
continue;
+ }
l = PFKEY_UNUNIT64(((struct sadb_ext *)sav->lft_s)->sadb_ext_len);
p = sav->lft_s;
break;
case SADB_EXT_ADDRESS_PROXY:
case SADB_EXT_IDENTITY_SRC:
case SADB_EXT_IDENTITY_DST:
- /* XXX: should we brought from SPD ? */
+ /* XXX: should we brought from SPD ? */
case SADB_EXT_SENSITIVITY:
default:
continue;
}
- if ((!m && !p) || (m && p))
+ if ((!m && !p) || (m && p)) {
goto fail;
+ }
if (p && tres) {
- M_PREPEND(tres, l, M_DONTWAIT);
- if (!tres)
+ M_PREPEND(tres, l, M_WAITOK, 1);
+ if (!tres) {
goto fail;
+ }
bcopy(p, mtod(tres, caddr_t), l);
continue;
}
if (p) {
m = key_alloc_mbuf(l);
- if (!m)
+ if (!m) {
goto fail;
+ }
m_copyback(m, 0, l, p);
}
- if (tres)
+ if (tres) {
m_cat(m, tres);
+ }
tres = m;
}
m_cat(result, tres);
+ if (sav->sah && (sav->sah->outgoing_if || sav->sah->ipsec_if)) {
+ m = key_setsadbipsecif(NULL, ifindex2ifnet[sav->sah->outgoing_if], sav->sah->ipsec_if, 0);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
+ }
+
if (result->m_len < sizeof(struct sadb_msg)) {
result = m_pullup(result, sizeof(struct sadb_msg));
- if (result == NULL)
+ if (result == NULL) {
goto fail;
+ }
}
result->m_pkthdr.len = 0;
- for (m = result; m; m = m->m_next)
+ for (m = result; m; m = m->m_next) {
result->m_pkthdr.len += m->m_len;
+ }
+ VERIFY(PFKEY_UNIT64(result->m_pkthdr.len) <= UINT16_MAX);
mtod(result, struct sadb_msg *)->sadb_msg_len =
- PFKEY_UNIT64(result->m_pkthdr.len);
+ (u_int16_t)PFKEY_UNIT64(result->m_pkthdr.len);
return result;
* set data into sadb_msg.
*/
static struct mbuf *
-key_setsadbmsg(type, tlen, satype, seq, pid, reserved)
- u_int8_t type, satype;
- u_int16_t tlen;
- u_int32_t seq;
- pid_t pid;
- u_int16_t reserved;
+key_setsadbmsg(
+ u_int8_t type,
+ u_int16_t tlen,
+ u_int8_t satype,
+ u_int32_t seq,
+ pid_t pid,
+ u_int16_t reserved)
{
struct mbuf *m;
struct sadb_msg *p;
int len;
len = PFKEY_ALIGN8(sizeof(struct sadb_msg));
- if (len > MCLBYTES)
+ if (len > MCLBYTES) {
return NULL;
+ }
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m && len > MHLEN) {
MCLGET(m, M_DONTWAIT);
m = NULL;
}
}
- if (!m)
+ if (!m) {
return NULL;
+ }
m->m_pkthdr.len = m->m_len = len;
m->m_next = NULL;
* copy secasvar data into sadb_address.
*/
static struct mbuf *
-key_setsadbsa(sav)
- struct secasvar *sav;
+key_setsadbsa(
+ struct secasvar *sav)
{
struct mbuf *m;
struct sadb_sa *p;
- int len;
+ u_int16_t len;
len = PFKEY_ALIGN8(sizeof(struct sadb_sa));
m = key_alloc_mbuf(len);
- if (!m || m->m_next) { /*XXX*/
- if (m)
+ if (!m || m->m_next) { /*XXX*/
+ if (m) {
m_freem(m);
+ }
return NULL;
}
p->sadb_sa_len = PFKEY_UNIT64(len);
p->sadb_sa_exttype = SADB_EXT_SA;
p->sadb_sa_spi = sav->spi;
- p->sadb_sa_replay = (sav->replay != NULL ? sav->replay->wsize : 0);
+ p->sadb_sa_replay = (sav->replay[0] != NULL ? sav->replay[0]->wsize : 0);
p->sadb_sa_state = sav->state;
p->sadb_sa_auth = sav->alg_auth;
p->sadb_sa_encrypt = sav->alg_enc;
* set data into sadb_address.
*/
static struct mbuf *
-key_setsadbaddr(exttype, saddr, prefixlen, ul_proto)
- u_int16_t exttype;
- struct sockaddr *saddr;
- u_int8_t prefixlen;
- u_int16_t ul_proto;
+key_setsadbaddr(
+ u_int16_t exttype,
+ struct sockaddr *saddr,
+ size_t prefixlen,
+ u_int8_t ul_proto)
{
struct mbuf *m;
struct sadb_address *p;
- size_t len;
+ u_int16_t len;
len = PFKEY_ALIGN8(sizeof(struct sadb_address)) +
PFKEY_ALIGN8(saddr->sa_len);
m = key_alloc_mbuf(len);
- if (!m || m->m_next) { /*XXX*/
- if (m)
+ if (!m || m->m_next) { /*XXX*/
+ if (m) {
m_freem(m);
+ }
return NULL;
}
prefixlen = sizeof(struct in6_addr) << 3;
break;
default:
- ; /*XXX*/
+ ; /*XXX*/
}
}
- p->sadb_address_prefixlen = prefixlen;
+ if (prefixlen >= UINT8_MAX) {
+ ipseclog((LOG_ERR, "key_setsadbaddr: bad prefix length %zu", prefixlen));
+ m_freem(m);
+ return NULL;
+ }
+ p->sadb_address_prefixlen = (u_int8_t)prefixlen;
p->sadb_address_reserved = 0;
bcopy(saddr,
return m;
}
-#if 0
+static struct mbuf *
+key_setsadbipsecif(ifnet_t internal_if,
+ ifnet_t outgoing_if,
+ ifnet_t ipsec_if,
+ u_int8_t init_disabled)
+{
+ struct mbuf *m;
+ struct sadb_x_ipsecif *p;
+ u_int16_t len;
+
+ len = PFKEY_ALIGN8(sizeof(struct sadb_x_ipsecif));
+ m = key_alloc_mbuf(len);
+ if (!m || m->m_next) { /*XXX*/
+ if (m) {
+ m_freem(m);
+ }
+ return NULL;
+ }
+
+ p = mtod(m, struct sadb_x_ipsecif *);
+
+ bzero(p, len);
+ p->sadb_x_ipsecif_len = PFKEY_UNIT64(len);
+ p->sadb_x_ipsecif_exttype = SADB_X_EXT_IPSECIF;
+
+ if (internal_if && internal_if->if_xname) {
+ strlcpy(p->sadb_x_ipsecif_internal_if, internal_if->if_xname, IFXNAMSIZ);
+ }
+ if (outgoing_if && outgoing_if->if_xname) {
+ strlcpy(p->sadb_x_ipsecif_outgoing_if, outgoing_if->if_xname, IFXNAMSIZ);
+ }
+ if (ipsec_if && ipsec_if->if_xname) {
+ strlcpy(p->sadb_x_ipsecif_ipsec_if, ipsec_if->if_xname, IFXNAMSIZ);
+ }
+
+ p->sadb_x_ipsecif_init_disabled = init_disabled;
+
+ return m;
+}
+
/*
- * set data into sadb_ident.
+ * set data into sadb_session_id
*/
static struct mbuf *
-key_setsadbident(exttype, idtype, string, stringlen, id)
- u_int16_t exttype, idtype;
- caddr_t string;
- int stringlen;
- u_int64_t id;
+key_setsadbsession_id(u_int64_t session_ids[])
{
struct mbuf *m;
- struct sadb_ident *p;
- size_t len;
+ struct sadb_session_id *p;
+ u_int16_t len;
- len = PFKEY_ALIGN8(sizeof(struct sadb_ident)) + PFKEY_ALIGN8(stringlen);
+ len = PFKEY_ALIGN8(sizeof(*p));
m = key_alloc_mbuf(len);
- if (!m || m->m_next) { /*XXX*/
- if (m)
+ if (!m || m->m_next) { /*XXX*/
+ if (m) {
m_freem(m);
+ }
return NULL;
}
- p = mtod(m, struct sadb_ident *);
+ p = mtod(m, __typeof__(p));
bzero(p, len);
- p->sadb_ident_len = PFKEY_UNIT64(len);
- p->sadb_ident_exttype = exttype;
- p->sadb_ident_type = idtype;
- p->sadb_ident_reserved = 0;
- p->sadb_ident_id = id;
+ p->sadb_session_id_len = PFKEY_UNIT64(len);
+ p->sadb_session_id_exttype = SADB_EXT_SESSION_ID;
+ p->sadb_session_id_v[0] = session_ids[0];
+ p->sadb_session_id_v[1] = session_ids[1];
+
+ return m;
+}
+
+/*
+ * copy stats data into sadb_sastat type.
+ */
+static struct mbuf *
+key_setsadbsastat(u_int32_t dir,
+ struct sastat *stats,
+ u_int32_t max_stats)
+{
+ struct mbuf *m;
+ struct sadb_sastat *p;
+ size_t list_len, len;
+
+ if (!stats) {
+ return NULL;
+ }
+
+ list_len = sizeof(*stats) * max_stats;
+ len = PFKEY_ALIGN8(sizeof(*p)) + PFKEY_ALIGN8(list_len);
+ if (PFKEY_UNIT64(len) >= UINT16_MAX) {
+ ipseclog((LOG_ERR, "key_setsadbsastat: length is too big: %zu\n", len));
+ return NULL;
+ }
+
+ m = key_alloc_mbuf((int)len);
+ if (!m || m->m_next) { /*XXX*/
+ if (m) {
+ m_freem(m);
+ }
+ return NULL;
+ }
+
+ p = mtod(m, __typeof__(p));
- bcopy(string,
- mtod(m, caddr_t) + PFKEY_ALIGN8(sizeof(struct sadb_ident)),
- stringlen);
+ bzero(p, len);
+ p->sadb_sastat_len = (u_int16_t)PFKEY_UNIT64(len);
+ p->sadb_sastat_exttype = SADB_EXT_SASTAT;
+ p->sadb_sastat_dir = dir;
+ p->sadb_sastat_list_len = max_stats;
+ if (list_len) {
+ bcopy(stats,
+ mtod(m, caddr_t) + PFKEY_ALIGN8(sizeof(*p)),
+ list_len);
+ }
return m;
}
-#endif
/*
* set data into sadb_x_sa2.
*/
static struct mbuf *
-key_setsadbxsa2(mode, seq, reqid)
- u_int8_t mode;
- u_int32_t seq, reqid;
+key_setsadbxsa2(
+ u_int8_t mode,
+ u_int32_t seq,
+ u_int32_t reqid,
+ u_int16_t flags)
{
struct mbuf *m;
struct sadb_x_sa2 *p;
- size_t len;
+ u_int16_t len;
len = PFKEY_ALIGN8(sizeof(struct sadb_x_sa2));
m = key_alloc_mbuf(len);
- if (!m || m->m_next) { /*XXX*/
- if (m)
+ if (!m || m->m_next) { /*XXX*/
+ if (m) {
m_freem(m);
+ }
return NULL;
}
p->sadb_x_sa2_reserved2 = 0;
p->sadb_x_sa2_sequence = seq;
p->sadb_x_sa2_reqid = reqid;
+ p->sadb_x_sa2_flags = flags;
return m;
}
* set data into sadb_x_policy
*/
static struct mbuf *
-key_setsadbxpolicy(type, dir, id)
- u_int16_t type;
- u_int8_t dir;
- u_int32_t id;
+key_setsadbxpolicy(
+ u_int16_t type,
+ u_int8_t dir,
+ u_int32_t id)
{
struct mbuf *m;
struct sadb_x_policy *p;
- size_t len;
+ u_int16_t len;
len = PFKEY_ALIGN8(sizeof(struct sadb_x_policy));
m = key_alloc_mbuf(len);
- if (!m || m->m_next) { /*XXX*/
- if (m)
+ if (!m || m->m_next) { /*XXX*/
+ if (m) {
m_freem(m);
+ }
return NULL;
}
* copy a buffer into the new buffer allocated.
*/
static void *
-key_newbuf(src, len)
- const void *src;
- u_int len;
+key_newbuf(
+ const void *src,
+ u_int len)
{
caddr_t new;
- KMALLOC(new, caddr_t, len);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ KMALLOC_NOWAIT(new, caddr_t, len);
if (new == NULL) {
- ipseclog((LOG_DEBUG, "key_newbuf: No more memory.\n"));
- return NULL;
+ lck_mtx_unlock(sadb_mutex);
+ KMALLOC_WAIT(new, caddr_t, len);
+ lck_mtx_lock(sadb_mutex);
+ if (new == NULL) {
+ ipseclog((LOG_DEBUG, "key_newbuf: No more memory.\n"));
+ return NULL;
+ }
}
bcopy(src, new, len);
* 0: false
*/
int
-key_ismyaddr(sa)
- struct sockaddr *sa;
+key_ismyaddr(
+ struct sockaddr *sa)
{
#if INET
struct sockaddr_in *sin;
#endif
/* sanity check */
- if (sa == NULL)
+ if (sa == NULL) {
panic("key_ismyaddr: NULL pointer is passed.\n");
+ }
switch (sa->sa_family) {
#if INET
case AF_INET:
- lck_mtx_lock(rt_mtx);
- sin = (struct sockaddr_in *)sa;
+ lck_rw_lock_shared(in_ifaddr_rwlock);
+ sin = (struct sockaddr_in *)(void *)sa;
for (ia = in_ifaddrhead.tqh_first; ia;
- ia = ia->ia_link.tqe_next)
- {
+ ia = ia->ia_link.tqe_next) {
+ IFA_LOCK_SPIN(&ia->ia_ifa);
if (sin->sin_family == ia->ia_addr.sin_family &&
sin->sin_len == ia->ia_addr.sin_len &&
- sin->sin_addr.s_addr == ia->ia_addr.sin_addr.s_addr)
- {
- lck_mtx_unlock(rt_mtx);
+ sin->sin_addr.s_addr == ia->ia_addr.sin_addr.s_addr) {
+ IFA_UNLOCK(&ia->ia_ifa);
+ lck_rw_done(in_ifaddr_rwlock);
return 1;
}
+ IFA_UNLOCK(&ia->ia_ifa);
}
- lck_mtx_unlock(rt_mtx);
+ lck_rw_done(in_ifaddr_rwlock);
break;
#endif
-#if INET6
case AF_INET6:
- return key_ismyaddr6((struct sockaddr_in6 *)sa);
-#endif
+ return key_ismyaddr6((struct sockaddr_in6 *)(void *)sa);
}
return 0;
}
-#if INET6
/*
* compare my own address for IPv6.
* 1: ours
#include <netinet6/in6_var.h>
static int
-key_ismyaddr6(sin6)
- struct sockaddr_in6 *sin6;
+key_ismyaddr6(
+ struct sockaddr_in6 *sin6)
{
struct in6_ifaddr *ia;
struct in6_multi *in6m;
- lck_mtx_lock(nd6_mutex);
- for (ia = in6_ifaddrs; ia; ia = ia->ia_next) {
+ lck_rw_lock_shared(&in6_ifaddr_rwlock);
+ TAILQ_FOREACH(ia, &in6_ifaddrhead, ia6_link) {
+ IFA_LOCK(&ia->ia_ifa);
if (key_sockaddrcmp((struct sockaddr *)&sin6,
(struct sockaddr *)&ia->ia_addr, 0) == 0) {
- lck_mtx_unlock(nd6_mutex);
+ IFA_UNLOCK(&ia->ia_ifa);
+ lck_rw_done(&in6_ifaddr_rwlock);
return 1;
}
+ IFA_UNLOCK(&ia->ia_ifa);
/*
* XXX Multicast
* XXX scope
*/
in6m = NULL;
- IN6_LOOKUP_MULTI(sin6->sin6_addr, ia->ia_ifp, in6m);
- if (in6m) {
- lck_mtx_unlock(nd6_mutex);
+ in6_multihead_lock_shared();
+ IN6_LOOKUP_MULTI(&sin6->sin6_addr, ia->ia_ifp, in6m);
+ in6_multihead_lock_done();
+ if (in6m != NULL) {
+ lck_rw_done(&in6_ifaddr_rwlock);
+ IN6M_REMREF(in6m);
return 1;
}
}
- lck_mtx_unlock(nd6_mutex);
+ lck_rw_done(&in6_ifaddr_rwlock);
/* loopback, just for safety */
- if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))
+ if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr)) {
return 1;
+ }
return 0;
}
-#endif /*INET6*/
/*
* compare two secasindex structure.
* flag can specify to compare 2 saidxes.
* compare two secasindex structure without both mode and reqid.
* don't compare port.
- * IN:
+ * IN:
* saidx0: source, it can be in SAD.
* saidx1: object.
- * OUT:
+ * OUT:
* 1 : equal
* 0 : not equal
*/
static int
-key_cmpsaidx(saidx0, saidx1, flag)
- struct secasindex *saidx0, *saidx1;
- int flag;
+key_cmpsaidx(
+ struct secasindex *saidx0,
+ struct secasindex *saidx1,
+ int flag)
{
/* sanity */
- if (saidx0 == NULL && saidx1 == NULL)
+ if (saidx0 == NULL && saidx1 == NULL) {
return 1;
+ }
- if (saidx0 == NULL || saidx1 == NULL)
+ if (saidx0 == NULL || saidx1 == NULL) {
return 0;
+ }
+
+ if (saidx0->ipsec_ifindex != 0 && saidx0->ipsec_ifindex != saidx1->ipsec_ifindex) {
+ return 0;
+ }
- if (saidx0->proto != saidx1->proto)
+ if (saidx0->proto != saidx1->proto) {
return 0;
+ }
if (flag == CMP_EXACTLY) {
- if (saidx0->mode != saidx1->mode)
+ if (saidx0->mode != saidx1->mode) {
return 0;
- if (saidx0->reqid != saidx1->reqid)
+ }
+ if (saidx0->reqid != saidx1->reqid) {
return 0;
+ }
if (bcmp(&saidx0->src, &saidx1->src, saidx0->src.ss_len) != 0 ||
- bcmp(&saidx0->dst, &saidx1->dst, saidx0->dst.ss_len) != 0)
+ bcmp(&saidx0->dst, &saidx1->dst, saidx0->dst.ss_len) != 0) {
return 0;
+ }
} else {
-
/* CMP_MODE_REQID, CMP_REQID, CMP_HEAD */
- if (flag == CMP_MODE_REQID
- ||flag == CMP_REQID) {
+ if (flag & CMP_REQID) {
/*
* If reqid of SPD is non-zero, unique SA is required.
* The result must be of same reqid in this case.
*/
- if (saidx1->reqid != 0 && saidx0->reqid != saidx1->reqid)
+ if (saidx1->reqid != 0 && saidx0->reqid != saidx1->reqid) {
return 0;
+ }
}
- if (flag == CMP_MODE_REQID) {
+ if (flag & CMP_MODE) {
if (saidx0->mode != IPSEC_MODE_ANY
- && saidx0->mode != saidx1->mode)
+ && saidx0->mode != saidx1->mode) {
return 0;
+ }
}
if (key_sockaddrcmp((struct sockaddr *)&saidx0->src,
- (struct sockaddr *)&saidx1->src, 0) != 0) {
+ (struct sockaddr *)&saidx1->src, flag & CMP_PORT ? 1 : 0) != 0) {
return 0;
}
if (key_sockaddrcmp((struct sockaddr *)&saidx0->dst,
- (struct sockaddr *)&saidx1->dst, 0) != 0) {
+ (struct sockaddr *)&saidx1->dst, flag & CMP_PORT ? 1 : 0) != 0) {
return 0;
}
}
* 0 : not equal
*/
static int
-key_cmpspidx_exactly(spidx0, spidx1)
- struct secpolicyindex *spidx0, *spidx1;
+key_cmpspidx_exactly(
+ struct secpolicyindex *spidx0,
+ struct secpolicyindex *spidx1)
{
/* sanity */
- if (spidx0 == NULL && spidx1 == NULL)
+ if (spidx0 == NULL && spidx1 == NULL) {
return 1;
+ }
- if (spidx0 == NULL || spidx1 == NULL)
+ if (spidx0 == NULL || spidx1 == NULL) {
return 0;
+ }
if (spidx0->prefs != spidx1->prefs
- || spidx0->prefd != spidx1->prefd
- || spidx0->ul_proto != spidx1->ul_proto)
+ || spidx0->prefd != spidx1->prefd
+ || spidx0->ul_proto != spidx1->ul_proto
+ || spidx0->internal_if != spidx1->internal_if) {
return 0;
+ }
if (key_sockaddrcmp((struct sockaddr *)&spidx0->src,
(struct sockaddr *)&spidx1->src, 1) != 0) {
return 0;
}
+ if (key_sockaddrcmp((struct sockaddr *)&spidx0->src_range.start,
+ (struct sockaddr *)&spidx1->src_range.start, 1) != 0) {
+ return 0;
+ }
+ if (key_sockaddrcmp((struct sockaddr *)&spidx0->src_range.end,
+ (struct sockaddr *)&spidx1->src_range.end, 1) != 0) {
+ return 0;
+ }
+ if (key_sockaddrcmp((struct sockaddr *)&spidx0->dst_range.start,
+ (struct sockaddr *)&spidx1->dst_range.start, 1) != 0) {
+ return 0;
+ }
+ if (key_sockaddrcmp((struct sockaddr *)&spidx0->dst_range.end,
+ (struct sockaddr *)&spidx1->dst_range.end, 1) != 0) {
+ return 0;
+ }
+
return 1;
}
* 0 : not equal
*/
static int
-key_cmpspidx_withmask(spidx0, spidx1)
- struct secpolicyindex *spidx0, *spidx1;
+key_cmpspidx_withmask(
+ struct secpolicyindex *spidx0,
+ struct secpolicyindex *spidx1)
{
+ int spidx0_src_is_range = 0;
+ int spidx0_dst_is_range = 0;
+
/* sanity */
- if (spidx0 == NULL && spidx1 == NULL)
+ if (spidx0 == NULL && spidx1 == NULL) {
return 1;
+ }
- if (spidx0 == NULL || spidx1 == NULL)
+ if (spidx0 == NULL || spidx1 == NULL) {
return 0;
+ }
+
+ if (spidx0->src_range.start.ss_len > 0) {
+ spidx0_src_is_range = 1;
+ }
- if (spidx0->src.ss_family != spidx1->src.ss_family ||
- spidx0->dst.ss_family != spidx1->dst.ss_family ||
- spidx0->src.ss_len != spidx1->src.ss_len ||
- spidx0->dst.ss_len != spidx1->dst.ss_len)
+ if (spidx0->dst_range.start.ss_len > 0) {
+ spidx0_dst_is_range = 1;
+ }
+
+ if ((spidx0_src_is_range ? spidx0->src_range.start.ss_family : spidx0->src.ss_family) != spidx1->src.ss_family ||
+ (spidx0_dst_is_range ? spidx0->dst_range.start.ss_family : spidx0->dst.ss_family) != spidx1->dst.ss_family ||
+ (spidx0_src_is_range ? spidx0->src_range.start.ss_len : spidx0->src.ss_len) != spidx1->src.ss_len ||
+ (spidx0_dst_is_range ? spidx0->dst_range.start.ss_len : spidx0->dst.ss_len) != spidx1->dst.ss_len) {
return 0;
+ }
/* if spidx.ul_proto == IPSEC_ULPROTO_ANY, ignore. */
if (spidx0->ul_proto != (u_int16_t)IPSEC_ULPROTO_ANY
- && spidx0->ul_proto != spidx1->ul_proto)
+ && spidx0->ul_proto != spidx1->ul_proto) {
return 0;
+ }
- switch (spidx0->src.ss_family) {
- case AF_INET:
- if (satosin(&spidx0->src)->sin_port != IPSEC_PORT_ANY
- && satosin(&spidx0->src)->sin_port !=
- satosin(&spidx1->src)->sin_port)
- return 0;
- if (!key_bbcmp((caddr_t)&satosin(&spidx0->src)->sin_addr,
- (caddr_t)&satosin(&spidx1->src)->sin_addr, spidx0->prefs))
+ /* If spidx1 specifies interface, ignore src addr */
+ if (spidx1->internal_if != NULL) {
+ if (spidx0->internal_if == NULL
+ || spidx0->internal_if != spidx1->internal_if) {
return 0;
- break;
- case AF_INET6:
- if (satosin6(&spidx0->src)->sin6_port != IPSEC_PORT_ANY
- && satosin6(&spidx0->src)->sin6_port !=
- satosin6(&spidx1->src)->sin6_port)
- return 0;
- /*
- * scope_id check. if sin6_scope_id is 0, we regard it
- * as a wildcard scope, which matches any scope zone ID.
- */
- if (satosin6(&spidx0->src)->sin6_scope_id &&
- satosin6(&spidx1->src)->sin6_scope_id &&
- satosin6(&spidx0->src)->sin6_scope_id !=
- satosin6(&spidx1->src)->sin6_scope_id)
- return 0;
- if (!key_bbcmp((caddr_t)&satosin6(&spidx0->src)->sin6_addr,
- (caddr_t)&satosin6(&spidx1->src)->sin6_addr, spidx0->prefs))
- return 0;
- break;
- default:
- /* XXX */
- if (bcmp(&spidx0->src, &spidx1->src, spidx0->src.ss_len) != 0)
+ }
+
+ /* Still check ports */
+ switch (spidx0->src.ss_family) {
+ case AF_INET:
+ if (spidx0_src_is_range &&
+ (satosin(&spidx1->src)->sin_port < satosin(&spidx0->src_range.start)->sin_port
+ || satosin(&spidx1->src)->sin_port > satosin(&spidx0->src_range.end)->sin_port)) {
+ return 0;
+ } else if (satosin(&spidx0->src)->sin_port != IPSEC_PORT_ANY
+ && satosin(&spidx0->src)->sin_port !=
+ satosin(&spidx1->src)->sin_port) {
+ return 0;
+ }
+ break;
+ case AF_INET6:
+ if (spidx0_src_is_range &&
+ (satosin6(&spidx1->src)->sin6_port < satosin6(&spidx0->src_range.start)->sin6_port
+ || satosin6(&spidx1->src)->sin6_port > satosin6(&spidx0->src_range.end)->sin6_port)) {
+ return 0;
+ } else if (satosin6(&spidx0->src)->sin6_port != IPSEC_PORT_ANY
+ && satosin6(&spidx0->src)->sin6_port !=
+ satosin6(&spidx1->src)->sin6_port) {
+ return 0;
+ }
+ break;
+ default:
+ break;
+ }
+ } else if (spidx0_src_is_range) {
+ if (!key_is_addr_in_range(&spidx1->src, &spidx0->src_range)) {
return 0;
- break;
+ }
+ } else {
+ switch (spidx0->src.ss_family) {
+ case AF_INET:
+ if (satosin(&spidx0->src)->sin_port != IPSEC_PORT_ANY
+ && satosin(&spidx0->src)->sin_port !=
+ satosin(&spidx1->src)->sin_port) {
+ return 0;
+ }
+ if (!key_bbcmp((caddr_t)&satosin(&spidx0->src)->sin_addr,
+ (caddr_t)&satosin(&spidx1->src)->sin_addr, spidx0->prefs)) {
+ return 0;
+ }
+ break;
+ case AF_INET6:
+ if (satosin6(&spidx0->src)->sin6_port != IPSEC_PORT_ANY
+ && satosin6(&spidx0->src)->sin6_port !=
+ satosin6(&spidx1->src)->sin6_port) {
+ return 0;
+ }
+ /*
+ * scope_id check. if sin6_scope_id is 0, we regard it
+ * as a wildcard scope, which matches any scope zone ID.
+ */
+ if (satosin6(&spidx0->src)->sin6_scope_id &&
+ satosin6(&spidx1->src)->sin6_scope_id &&
+ satosin6(&spidx0->src)->sin6_scope_id !=
+ satosin6(&spidx1->src)->sin6_scope_id) {
+ return 0;
+ }
+ if (!key_bbcmp((caddr_t)&satosin6(&spidx0->src)->sin6_addr,
+ (caddr_t)&satosin6(&spidx1->src)->sin6_addr, spidx0->prefs)) {
+ return 0;
+ }
+ break;
+ default:
+ /* XXX */
+ if (bcmp(&spidx0->src, &spidx1->src, spidx0->src.ss_len) != 0) {
+ return 0;
+ }
+ break;
+ }
}
- switch (spidx0->dst.ss_family) {
- case AF_INET:
- if (satosin(&spidx0->dst)->sin_port != IPSEC_PORT_ANY
- && satosin(&spidx0->dst)->sin_port !=
- satosin(&spidx1->dst)->sin_port)
- return 0;
- if (!key_bbcmp((caddr_t)&satosin(&spidx0->dst)->sin_addr,
- (caddr_t)&satosin(&spidx1->dst)->sin_addr, spidx0->prefd))
+ if (spidx0_dst_is_range) {
+ if (!key_is_addr_in_range(&spidx1->dst, &spidx0->dst_range)) {
return 0;
- break;
- case AF_INET6:
- if (satosin6(&spidx0->dst)->sin6_port != IPSEC_PORT_ANY
- && satosin6(&spidx0->dst)->sin6_port !=
- satosin6(&spidx1->dst)->sin6_port)
- return 0;
- /*
- * scope_id check. if sin6_scope_id is 0, we regard it
- * as a wildcard scope, which matches any scope zone ID.
- */
- if (satosin6(&spidx0->src)->sin6_scope_id &&
- satosin6(&spidx1->src)->sin6_scope_id &&
- satosin6(&spidx0->dst)->sin6_scope_id !=
- satosin6(&spidx1->dst)->sin6_scope_id)
- return 0;
- if (!key_bbcmp((caddr_t)&satosin6(&spidx0->dst)->sin6_addr,
- (caddr_t)&satosin6(&spidx1->dst)->sin6_addr, spidx0->prefd))
- return 0;
- break;
- default:
- /* XXX */
- if (bcmp(&spidx0->dst, &spidx1->dst, spidx0->dst.ss_len) != 0)
- return 0;
- break;
+ }
+ } else {
+ switch (spidx0->dst.ss_family) {
+ case AF_INET:
+ if (satosin(&spidx0->dst)->sin_port != IPSEC_PORT_ANY
+ && satosin(&spidx0->dst)->sin_port !=
+ satosin(&spidx1->dst)->sin_port) {
+ return 0;
+ }
+ if (!key_bbcmp((caddr_t)&satosin(&spidx0->dst)->sin_addr,
+ (caddr_t)&satosin(&spidx1->dst)->sin_addr, spidx0->prefd)) {
+ return 0;
+ }
+ break;
+ case AF_INET6:
+ if (satosin6(&spidx0->dst)->sin6_port != IPSEC_PORT_ANY
+ && satosin6(&spidx0->dst)->sin6_port !=
+ satosin6(&spidx1->dst)->sin6_port) {
+ return 0;
+ }
+ /*
+ * scope_id check. if sin6_scope_id is 0, we regard it
+ * as a wildcard scope, which matches any scope zone ID.
+ */
+ if (satosin6(&spidx0->src)->sin6_scope_id &&
+ satosin6(&spidx1->src)->sin6_scope_id &&
+ satosin6(&spidx0->dst)->sin6_scope_id !=
+ satosin6(&spidx1->dst)->sin6_scope_id) {
+ return 0;
+ }
+ if (!key_bbcmp((caddr_t)&satosin6(&spidx0->dst)->sin6_addr,
+ (caddr_t)&satosin6(&spidx1->dst)->sin6_addr, spidx0->prefd)) {
+ return 0;
+ }
+ break;
+ default:
+ /* XXX */
+ if (bcmp(&spidx0->dst, &spidx1->dst, spidx0->dst.ss_len) != 0) {
+ return 0;
+ }
+ break;
+ }
}
/* XXX Do we check other field ? e.g. flowinfo */
return 1;
}
-/* returns 0 on match */
static int
-key_sockaddrcmp(sa1, sa2, port)
- struct sockaddr *sa1;
- struct sockaddr *sa2;
- int port;
+key_is_addr_in_range(struct sockaddr_storage *addr, struct secpolicyaddrrange *addr_range)
{
- if (sa1->sa_family != sa2->sa_family || sa1->sa_len != sa2->sa_len)
- return 1;
+ int cmp = 0;
+
+ if (addr == NULL || addr_range == NULL) {
+ return 0;
+ }
+
+ /* Must be greater than or equal to start */
+ cmp = key_sockaddrcmp((struct sockaddr *)addr, (struct sockaddr *)&addr_range->start, 1);
+ if (cmp != 0 && cmp != 1) {
+ return 0;
+ }
+
+ /* Must be less than or equal to end */
+ cmp = key_sockaddrcmp((struct sockaddr *)addr, (struct sockaddr *)&addr_range->end, 1);
+ if (cmp != 0 && cmp != -1) {
+ return 0;
+ }
+
+ return 1;
+}
+
+/*
+ * Return values:
+ * -1: sa1 < sa2
+ * 0: sa1 == sa2
+ * 1: sa1 > sa2
+ * 2: Not comparable or error
+ */
+static int
+key_sockaddrcmp(
+ struct sockaddr *sa1,
+ struct sockaddr *sa2,
+ int port)
+{
+ int result = 0;
+ int port_result = 0;
+
+ if (sa1->sa_family != sa2->sa_family || sa1->sa_len != sa2->sa_len) {
+ return 2;
+ }
+
+ if (sa1->sa_len == 0) {
+ return 0;
+ }
switch (sa1->sa_family) {
case AF_INET:
- if (sa1->sa_len != sizeof(struct sockaddr_in))
- return 1;
- if (satosin(sa1)->sin_addr.s_addr !=
- satosin(sa2)->sin_addr.s_addr) {
- return 1;
+ if (sa1->sa_len != sizeof(struct sockaddr_in)) {
+ return 2;
}
- if (port && satosin(sa1)->sin_port != satosin(sa2)->sin_port)
- return 1;
+
+ result = memcmp(&satosin(sa1)->sin_addr.s_addr, &satosin(sa2)->sin_addr.s_addr, sizeof(satosin(sa1)->sin_addr.s_addr));
+
+ if (port) {
+ if (satosin(sa1)->sin_port < satosin(sa2)->sin_port) {
+ port_result = -1;
+ } else if (satosin(sa1)->sin_port > satosin(sa2)->sin_port) {
+ port_result = 1;
+ }
+
+ if (result == 0) {
+ result = port_result;
+ } else if ((result > 0 && port_result < 0) || (result < 0 && port_result > 0)) {
+ return 2;
+ }
+ }
+
break;
case AF_INET6:
- if (sa1->sa_len != sizeof(struct sockaddr_in6))
- return 1; /*EINVAL*/
+ if (sa1->sa_len != sizeof(struct sockaddr_in6)) {
+ return 2; /*EINVAL*/
+ }
if (satosin6(sa1)->sin6_scope_id !=
satosin6(sa2)->sin6_scope_id) {
- return 1;
- }
- if (!IN6_ARE_ADDR_EQUAL(&satosin6(sa1)->sin6_addr,
- &satosin6(sa2)->sin6_addr)) {
- return 1;
+ return 2;
}
- if (port &&
- satosin6(sa1)->sin6_port != satosin6(sa2)->sin6_port) {
- return 1;
+
+ result = memcmp(&satosin6(sa1)->sin6_addr.s6_addr[0], &satosin6(sa2)->sin6_addr.s6_addr[0], sizeof(struct in6_addr));
+
+ if (port) {
+ if (satosin6(sa1)->sin6_port < satosin6(sa2)->sin6_port) {
+ port_result = -1;
+ } else if (satosin6(sa1)->sin6_port > satosin6(sa2)->sin6_port) {
+ port_result = 1;
+ }
+
+ if (result == 0) {
+ result = port_result;
+ } else if ((result > 0 && port_result < 0) || (result < 0 && port_result > 0)) {
+ return 2;
+ }
}
+
+ break;
default:
- if (bcmp(sa1, sa2, sa1->sa_len) != 0)
- return 1;
+ result = memcmp(sa1, sa2, sa1->sa_len);
break;
}
- return 0;
+ if (result < 0) {
+ result = -1;
+ } else if (result > 0) {
+ result = 1;
+ }
+
+ return result;
}
/*
* 0 : not equal
*/
static int
-key_bbcmp(p1, p2, bits)
- caddr_t p1, p2;
- u_int bits;
+key_bbcmp(
+ caddr_t p1,
+ caddr_t p2,
+ u_int bits)
{
u_int8_t mask;
* at a time, but it is complicated on LSB Endian machines */
/* Handle null pointers */
- if (p1 == NULL || p2 == NULL)
- return (p1 == p2);
+ if (p1 == NULL || p2 == NULL) {
+ return p1 == p2;
+ }
while (bits >= 8) {
- if (*p1++ != *p2++)
+ if (*p1++ != *p2++) {
return 0;
+ }
bits -= 8;
}
if (bits > 0) {
- mask = ~((1<<(8-bits))-1);
- if ((*p1 & mask) != (*p2 & mask))
+ mask = (u_int8_t)(~((1 << (8 - bits)) - 1));
+ if ((*p1 & mask) != (*p2 & mask)) {
return 0;
+ }
}
- return 1; /* Match! */
+ return 1; /* Match! */
}
/*
* and do to remove or to expire.
* XXX: year 2038 problem may remain.
*/
-
+int key_timehandler_debug = 0;
+u_int32_t spd_count = 0, sah_count = 0, dead_sah_count = 0, empty_sah_count = 0, larval_sav_count = 0, mature_sav_count = 0, dying_sav_count = 0, dead_sav_count = 0;
+u_int64_t total_sav_count = 0;
void
key_timehandler(void)
{
u_int dir;
- int s;
struct timeval tv;
+ struct secpolicy **spbuf = NULL, **spptr = NULL;
+ struct secasvar **savexbuf = NULL, **savexptr = NULL;
+ struct secasvar **savkabuf = NULL, **savkaptr = NULL;
+ size_t total_req_size = 0;
+ u_int32_t spbufcount = 0, savbufcount = 0, spcount = 0, savexcount = 0, savkacount = 0, cnt;
+ int stop_handler = 1; /* stop the timehandler */
microtime(&tv);
+ /* pre-allocate buffers before taking the lock */
+ /* if allocation failures occur - portions of the processing will be skipped */
+ if ((spbufcount = ipsec_policy_count) != 0) {
+ if (os_add_overflow(spbufcount, 256, &spbufcount)) {
+ ipseclog((LOG_DEBUG, "key_timehandler: spbufcount overflow, ipsec policy count %u.\n", ipsec_policy_count));
+ spbufcount = ipsec_policy_count;
+ }
+
+ if (os_mul_overflow(spbufcount, sizeof(struct secpolicy *), &total_req_size)) {
+ panic("key_timehandler spbuf requested memory overflow %u\n", spbufcount);
+ }
+ KMALLOC_WAIT(spbuf, struct secpolicy **, total_req_size);
+ if (spbuf) {
+ spptr = spbuf;
+ }
+ }
+ if ((savbufcount = ipsec_sav_count) != 0) {
+ if (os_add_overflow(savbufcount, 512, &savbufcount)) {
+ ipseclog((LOG_DEBUG, "key_timehandler: savbufcount overflow, ipsec sa count %u.\n", ipsec_sav_count));
+ savbufcount = ipsec_sav_count;
+ }
+ if (os_mul_overflow(savbufcount, sizeof(struct secasvar *), &total_req_size)) {
+ panic("key_timehandler savexbuf requested memory overflow %u\n", savbufcount);
+ }
+ KMALLOC_WAIT(savexbuf, struct secasvar **, total_req_size);
+ if (savexbuf) {
+ savexptr = savexbuf;
+ }
+ KMALLOC_WAIT(savkabuf, struct secasvar **, total_req_size);
+ if (savkabuf) {
+ savkaptr = savkabuf;
+ }
+ }
lck_mtx_lock(sadb_mutex);
/* SPD */
- {
- struct secpolicy *sp, *nextsp;
+ if (spbuf) {
+ struct secpolicy *sp, *nextsp;
+
+ for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
+ for (sp = LIST_FIRST(&sptree[dir]);
+ sp != NULL;
+ sp = nextsp) {
+ /* don't prevent timehandler from stopping for generate policy */
+ if (sp->policy != IPSEC_POLICY_GENERATE) {
+ stop_handler = 0;
+ }
+ spd_count++;
+ nextsp = LIST_NEXT(sp, chain);
- for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
- for (sp = LIST_FIRST(&sptree[dir]);
- sp != NULL;
- sp = nextsp) {
+ if (sp->state == IPSEC_SPSTATE_DEAD) {
+ key_freesp(sp, KEY_SADB_LOCKED);
+ continue;
+ }
- nextsp = LIST_NEXT(sp, chain);
+ if (sp->lifetime == 0 && sp->validtime == 0) {
+ continue;
+ }
+ if (spbuf && spcount < spbufcount) {
+ /* the deletion will occur next time */
+ if ((sp->lifetime
+ && tv.tv_sec - sp->created > sp->lifetime)
+ || (sp->validtime
+ && tv.tv_sec - sp->lastused > sp->validtime)) {
+ //key_spdexpire(sp);
+ sp->state = IPSEC_SPSTATE_DEAD;
+ sp->refcnt++;
+ *spptr++ = sp;
+ spcount++;
+ }
+ }
+ }
+ }
+ }
- if (sp->state == IPSEC_SPSTATE_DEAD) {
- key_freesp(sp);
+ /* SAD */
+ {
+ struct secashead *sah, *nextsah;
+ struct secasvar *sav, *nextsav;
+
+ for (sah = LIST_FIRST(&sahtree);
+ sah != NULL;
+ sah = nextsah) {
+ sah_count++;
+ nextsah = LIST_NEXT(sah, chain);
+
+ /* if sah has been dead, then delete it and process next sah. */
+ if (sah->state == SADB_SASTATE_DEAD) {
+ key_delsah(sah);
+ dead_sah_count++;
continue;
}
- if (sp->lifetime == 0 && sp->validtime == 0)
+ if (LIST_FIRST(&sah->savtree[SADB_SASTATE_LARVAL]) == NULL &&
+ LIST_FIRST(&sah->savtree[SADB_SASTATE_MATURE]) == NULL &&
+ LIST_FIRST(&sah->savtree[SADB_SASTATE_DYING]) == NULL &&
+ LIST_FIRST(&sah->savtree[SADB_SASTATE_DEAD]) == NULL) {
+ key_delsah(sah);
+ empty_sah_count++;
continue;
+ }
- /* the deletion will occur next time */
- if ((sp->lifetime
- && tv.tv_sec - sp->created > sp->lifetime)
- || (sp->validtime
- && tv.tv_sec - sp->lastused > sp->validtime)) {
- sp->state = IPSEC_SPSTATE_DEAD;
- key_spdexpire(sp);
+ if (savbufcount == 0) {
continue;
}
- }
- }
- }
-
- /* SAD */
- {
- struct secashead *sah, *nextsah;
- struct secasvar *sav, *nextsav;
-
- for (sah = LIST_FIRST(&sahtree);
- sah != NULL;
- sah = nextsah) {
- nextsah = LIST_NEXT(sah, chain);
-
- /* if sah has been dead, then delete it and process next sah. */
- if (sah->state == SADB_SASTATE_DEAD) {
- key_delsah(sah);
- continue;
- }
+ stop_handler = 0;
- /* if LARVAL entry doesn't become MATURE, delete it. */
- for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_LARVAL]);
- sav != NULL;
- sav = nextsav) {
+ /* if LARVAL entry doesn't become MATURE, delete it. */
+ for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_LARVAL]);
+ sav != NULL;
+ sav = nextsav) {
+ larval_sav_count++;
+ total_sav_count++;
+ nextsav = LIST_NEXT(sav, chain);
- nextsav = LIST_NEXT(sav, chain);
+ if (sav->lft_h != NULL) {
+ /* If a hard lifetime is defined for the LARVAL SA, use it */
+ if (sav->lft_h->sadb_lifetime_addtime != 0
+ && tv.tv_sec - sav->created > sav->lft_h->sadb_lifetime_addtime) {
+ if (sav->always_expire) {
+ key_send_delete(sav);
+ sav = NULL;
+ } else {
+ key_sa_chgstate(sav, SADB_SASTATE_DEAD);
+ key_freesav(sav, KEY_SADB_LOCKED);
+ sav = NULL;
+ }
+ }
+ } else {
+ if (tv.tv_sec - sav->created > key_larval_lifetime) {
+ key_freesav(sav, KEY_SADB_LOCKED);
+ }
+ }
+ }
- if (tv.tv_sec - sav->created > key_larval_lifetime) {
- key_freesav(sav);
+ /*
+ * If this is a NAT traversal SA with no activity,
+ * we need to send a keep alive.
+ *
+ * Performed outside of the loop before so we will
+ * only ever send one keepalive. The first SA on
+ * the list is the one that will be used for sending
+ * traffic, so this is the one we use for determining
+ * when to send the keepalive.
+ */
+ if (savkabuf && savkacount < savbufcount) {
+ sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_MATURE]); //%%% should we check dying list if this is empty???
+ if (sav && (natt_keepalive_interval || sav->natt_interval) &&
+ (sav->flags & (SADB_X_EXT_NATT_KEEPALIVE | SADB_X_EXT_ESP_KEEPALIVE)) != 0) {
+ sav->refcnt++;
+ *savkaptr++ = sav;
+ savkacount++;
+ }
}
- }
-
- /*
- * If this is a NAT traversal SA with no activity,
- * we need to send a keep alive.
- *
- * Performed outside of the loop before so we will
- * only ever send one keepalive. The first SA on
- * the list is the one that will be used for sending
- * traffic, so this is the one we use for determining
- * when to send the keepalive.
- */
- sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_MATURE]);
- if (natt_keepalive_interval && sav && (sav->flags & SADB_X_EXT_NATT_KEEPALIVE) != 0 &&
- (natt_now - sav->natt_last_activity) >= natt_keepalive_interval) {
- ipsec_send_natt_keepalive(sav);
- }
-
- /*
- * check MATURE entry to start to send expire message
- * whether or not.
- */
- for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_MATURE]);
- sav != NULL;
- sav = nextsav) {
- nextsav = LIST_NEXT(sav, chain);
+ /*
+ * check MATURE entry to start to send expire message
+ * whether or not.
+ */
+ for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_MATURE]);
+ sav != NULL;
+ sav = nextsav) {
+ mature_sav_count++;
+ total_sav_count++;
+ nextsav = LIST_NEXT(sav, chain);
- /* we don't need to check. */
- if (sav->lft_s == NULL)
- continue;
+ /* we don't need to check. */
+ if (sav->lft_s == NULL) {
+ continue;
+ }
- /* sanity check */
- if (sav->lft_c == NULL) {
- ipseclog((LOG_DEBUG,"key_timehandler: "
- "There is no CURRENT time, why?\n"));
- continue;
- }
+ /* sanity check */
+ if (sav->lft_c == NULL) {
+ ipseclog((LOG_DEBUG, "key_timehandler: "
+ "There is no CURRENT time, why?\n"));
+ continue;
+ }
- /* check SOFT lifetime */
- if (sav->lft_s->sadb_lifetime_addtime != 0
- && tv.tv_sec - sav->created > sav->lft_s->sadb_lifetime_addtime) {
+ /* check SOFT lifetime */
+ if (sav->lft_s->sadb_lifetime_addtime != 0
+ && tv.tv_sec - sav->created > sav->lft_s->sadb_lifetime_addtime) {
+ /*
+ * If always_expire is set, expire. Otherwise,
+ * if the SA has not been used, delete immediately.
+ */
+ if (sav->lft_c->sadb_lifetime_usetime == 0
+ && sav->always_expire == 0) {
+ key_sa_chgstate(sav, SADB_SASTATE_DEAD);
+ key_freesav(sav, KEY_SADB_LOCKED);
+ sav = NULL;
+ } else if (savexbuf && savexcount < savbufcount) {
+ key_sa_chgstate(sav, SADB_SASTATE_DYING);
+ sav->refcnt++;
+ *savexptr++ = sav;
+ savexcount++;
+ }
+ }
+ /* check SOFT lifetime by bytes */
/*
- * check the SA if it has been used.
- * when it hasn't been used, delete it.
- * i don't think such SA will be used.
+ * XXX I don't know the way to delete this SA
+ * when new SA is installed. Caution when it's
+ * installed too big lifetime by time.
*/
- if (sav->lft_c->sadb_lifetime_usetime == 0) {
- key_sa_chgstate(sav, SADB_SASTATE_DEAD);
- key_freesav(sav);
- sav = NULL;
- } else {
- key_sa_chgstate(sav, SADB_SASTATE_DYING);
+ else if (savexbuf && savexcount < savbufcount
+ && sav->lft_s->sadb_lifetime_bytes != 0
+ && sav->lft_s->sadb_lifetime_bytes < sav->lft_c->sadb_lifetime_bytes) {
/*
* XXX If we keep to send expire
* message in the status of
* DYING. Do remove below code.
*/
- key_expire(sav);
+ //key_expire(sav);
+ key_sa_chgstate(sav, SADB_SASTATE_DYING);
+ sav->refcnt++;
+ *savexptr++ = sav;
+ savexcount++;
}
}
- /* check SOFT lifetime by bytes */
- /*
- * XXX I don't know the way to delete this SA
- * when new SA is installed. Caution when it's
- * installed too big lifetime by time.
- */
- else if (sav->lft_s->sadb_lifetime_bytes != 0
- && sav->lft_s->sadb_lifetime_bytes < sav->lft_c->sadb_lifetime_bytes) {
-
- key_sa_chgstate(sav, SADB_SASTATE_DYING);
- /*
- * XXX If we keep to send expire
- * message in the status of
- * DYING. Do remove below code.
- */
- key_expire(sav);
- }
- }
-
- /* check DYING entry to change status to DEAD. */
- for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_DYING]);
- sav != NULL;
- sav = nextsav) {
+ /* check DYING entry to change status to DEAD. */
+ for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_DYING]);
+ sav != NULL;
+ sav = nextsav) {
+ dying_sav_count++;
+ total_sav_count++;
+ nextsav = LIST_NEXT(sav, chain);
- nextsav = LIST_NEXT(sav, chain);
+ /* we don't need to check. */
+ if (sav->lft_h == NULL) {
+ continue;
+ }
- /* we don't need to check. */
- if (sav->lft_h == NULL)
- continue;
+ /* sanity check */
+ if (sav->lft_c == NULL) {
+ ipseclog((LOG_DEBUG, "key_timehandler: "
+ "There is no CURRENT time, why?\n"));
+ continue;
+ }
- /* sanity check */
- if (sav->lft_c == NULL) {
- ipseclog((LOG_DEBUG, "key_timehandler: "
- "There is no CURRENT time, why?\n"));
- continue;
+ if (sav->lft_h->sadb_lifetime_addtime != 0
+ && tv.tv_sec - sav->created > sav->lft_h->sadb_lifetime_addtime) {
+ if (sav->always_expire) {
+ key_send_delete(sav);
+ sav = NULL;
+ } else {
+ key_sa_chgstate(sav, SADB_SASTATE_DEAD);
+ key_freesav(sav, KEY_SADB_LOCKED);
+ sav = NULL;
+ }
+ }
+ /* check HARD lifetime by bytes */
+ else if (sav->lft_h->sadb_lifetime_bytes != 0
+ && sav->lft_h->sadb_lifetime_bytes < sav->lft_c->sadb_lifetime_bytes) {
+ key_sa_chgstate(sav, SADB_SASTATE_DEAD);
+ key_freesav(sav, KEY_SADB_LOCKED);
+ sav = NULL;
+ }
}
- if (sav->lft_h->sadb_lifetime_addtime != 0
- && tv.tv_sec - sav->created > sav->lft_h->sadb_lifetime_addtime) {
- key_sa_chgstate(sav, SADB_SASTATE_DEAD);
- key_freesav(sav);
- sav = NULL;
- }
-#if 0 /* XXX Should we keep to send expire message until HARD lifetime ? */
- else if (sav->lft_s != NULL
- && sav->lft_s->sadb_lifetime_addtime != 0
- && tv.tv_sec - sav->created > sav->lft_s->sadb_lifetime_addtime) {
- /*
- * XXX: should be checked to be
- * installed the valid SA.
- */
+ /* delete entry in DEAD */
+ for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_DEAD]);
+ sav != NULL;
+ sav = nextsav) {
+ dead_sav_count++;
+ total_sav_count++;
+ nextsav = LIST_NEXT(sav, chain);
+
+ /* sanity check */
+ if (sav->state != SADB_SASTATE_DEAD) {
+ ipseclog((LOG_DEBUG, "key_timehandler: "
+ "invalid sav->state "
+ "(queue: %d SA: %d): "
+ "kill it anyway\n",
+ SADB_SASTATE_DEAD, sav->state));
+ }
/*
- * If there is no SA then sending
- * expire message.
+ * do not call key_freesav() here.
+ * sav should already be freed, and sav->refcnt
+ * shows other references to sav
+ * (such as from SPD).
*/
- key_expire(sav);
- }
-#endif
- /* check HARD lifetime by bytes */
- else if (sav->lft_h->sadb_lifetime_bytes != 0
- && sav->lft_h->sadb_lifetime_bytes < sav->lft_c->sadb_lifetime_bytes) {
- key_sa_chgstate(sav, SADB_SASTATE_DEAD);
- key_freesav(sav);
- sav = NULL;
}
}
+ }
- /* delete entry in DEAD */
- for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_DEAD]);
- sav != NULL;
- sav = nextsav) {
-
- nextsav = LIST_NEXT(sav, chain);
-
- /* sanity check */
- if (sav->state != SADB_SASTATE_DEAD) {
- ipseclog((LOG_DEBUG, "key_timehandler: "
- "invalid sav->state "
- "(queue: %d SA: %d): "
- "kill it anyway\n",
- SADB_SASTATE_DEAD, sav->state));
+ if (++key_timehandler_debug >= 300) {
+ if (key_debug_level) {
+ printf("%s: total stats for %u calls\n", __FUNCTION__, key_timehandler_debug);
+ printf("%s: walked %u SPDs\n", __FUNCTION__, spd_count);
+ printf("%s: walked %llu SAs: LARVAL SAs %u, MATURE SAs %u, DYING SAs %u, DEAD SAs %u\n", __FUNCTION__,
+ total_sav_count, larval_sav_count, mature_sav_count, dying_sav_count, dead_sav_count);
+ printf("%s: walked %u SAHs: DEAD SAHs %u, EMPTY SAHs %u\n", __FUNCTION__,
+ sah_count, dead_sah_count, empty_sah_count);
+ if (sah_search_calls) {
+ printf("%s: SAH search cost %d iters per call\n", __FUNCTION__,
+ (sah_search_count / sah_search_calls));
}
-
- /*
- * do not call key_freesav() here.
- * sav should already be freed, and sav->refcnt
- * shows other references to sav
- * (such as from SPD).
- */
}
+ spd_count = 0;
+ sah_count = 0;
+ dead_sah_count = 0;
+ empty_sah_count = 0;
+ larval_sav_count = 0;
+ mature_sav_count = 0;
+ dying_sav_count = 0;
+ dead_sav_count = 0;
+ total_sav_count = 0;
+ sah_search_count = 0;
+ sah_search_calls = 0;
+ key_timehandler_debug = 0;
}
- }
-
#ifndef IPSEC_NONBLOCK_ACQUIRE
/* ACQ tree */
- {
- struct secacq *acq, *nextacq;
-
- for (acq = LIST_FIRST(&acqtree);
- acq != NULL;
- acq = nextacq) {
-
- nextacq = LIST_NEXT(acq, chain);
-
- if (tv.tv_sec - acq->created > key_blockacq_lifetime
- && __LIST_CHAINED(acq)) {
- LIST_REMOVE(acq, chain);
- KFREE(acq);
+ {
+ struct secacq *acq, *nextacq;
+
+ for (acq = LIST_FIRST(&acqtree);
+ acq != NULL;
+ acq = nextacq) {
+ stop_handler = 0;
+ nextacq = LIST_NEXT(acq, chain);
+
+ if (tv.tv_sec - acq->created > key_blockacq_lifetime
+ && __LIST_CHAINED(acq)) {
+ LIST_REMOVE(acq, chain);
+ KFREE(acq);
+ }
}
}
- }
#endif
/* SP ACQ tree */
- {
- struct secspacq *acq, *nextacq;
-
- for (acq = LIST_FIRST(&spacqtree);
- acq != NULL;
- acq = nextacq) {
-
- nextacq = LIST_NEXT(acq, chain);
-
- if (tv.tv_sec - acq->created > key_blockacq_lifetime
- && __LIST_CHAINED(acq)) {
- LIST_REMOVE(acq, chain);
- KFREE(acq);
+ {
+ struct secspacq *acq, *nextacq;
+
+ for (acq = LIST_FIRST(&spacqtree);
+ acq != NULL;
+ acq = nextacq) {
+ stop_handler = 0;
+ nextacq = LIST_NEXT(acq, chain);
+
+ if (tv.tv_sec - acq->created > key_blockacq_lifetime
+ && __LIST_CHAINED(acq)) {
+ LIST_REMOVE(acq, chain);
+ KFREE(acq);
+ }
}
}
- }
/* initialize random seed */
if (key_tick_init_random++ > key_int_random) {
key_tick_init_random = 0;
key_srandom();
}
-
- natt_now++;
+
+ uint64_t acc_sleep_time = 0;
+ absolutetime_to_nanoseconds(mach_absolutetime_asleep, &acc_sleep_time);
+ natt_now = ++up_time + (acc_sleep_time / NSEC_PER_SEC);
lck_mtx_unlock(sadb_mutex);
-#ifndef IPSEC_DEBUG2
- /* do exchange to tick time !! */
- (void)timeout((void *)key_timehandler, (void *)0, hz);
-#endif /* IPSEC_DEBUG2 */
+ /* send messages outside of sadb_mutex */
+ if (spbuf && spcount > 0) {
+ cnt = spcount;
+ while (cnt--) {
+ key_spdexpire(*(--spptr));
+ }
+ }
+ if (savkabuf && savkacount > 0) {
+ struct secasvar **savkaptr_sav = savkaptr;
+ u_int32_t cnt_send = savkacount;
+
+ while (cnt_send--) {
+ if (ipsec_send_natt_keepalive(*(--savkaptr))) {
+ // <rdar://6768487> iterate (all over again) and update timestamps
+ struct secasvar **savkaptr_update = savkaptr_sav;
+ u_int32_t cnt_update = savkacount;
+ while (cnt_update--) {
+ key_update_natt_keepalive_timestamp(*savkaptr,
+ *(--savkaptr_update));
+ }
+ }
+ }
+ }
+ if (savexbuf && savexcount > 0) {
+ cnt = savexcount;
+ while (cnt--) {
+ key_expire(*(--savexptr));
+ }
+ }
+
+ /* decrement ref counts and free buffers */
+ lck_mtx_lock(sadb_mutex);
+ if (spbuf) {
+ while (spcount--) {
+ key_freesp(*spptr++, KEY_SADB_LOCKED);
+ }
+ KFREE(spbuf);
+ }
+ if (savkabuf) {
+ while (savkacount--) {
+ key_freesav(*savkaptr++, KEY_SADB_LOCKED);
+ }
+ KFREE(savkabuf);
+ }
+ if (savexbuf) {
+ while (savexcount--) {
+ key_freesav(*savexptr++, KEY_SADB_LOCKED);
+ }
+ KFREE(savexbuf);
+ }
+
+ if (stop_handler) {
+ key_timehandler_running = 0;
+ /* Turn on the ipsec bypass */
+ ipsec_bypass = 1;
+ } else {
+ /* do exchange to tick time !! */
+ (void)timeout((void *)key_timehandler, (void *)0, hz);
+ }
+
+ lck_mtx_unlock(sadb_mutex);
return;
}
* to initialize a seed for random()
*/
static void
-key_srandom()
+key_srandom(void)
{
#ifdef __APPLE__
/* Our PRNG is based on Yarrow and doesn't need to be seeded */
return;
}
-u_long
-key_random()
+u_int32_t
+key_random(void)
{
- u_long value;
+ u_int32_t value;
key_randomfill(&value, sizeof(value));
return value;
}
void
-key_randomfill(p, l)
- void *p;
- size_t l;
+key_randomfill(
+ void *p,
+ size_t l)
{
+#ifdef __APPLE__
+ cc_rand_generate(p, l);
+#else
size_t n;
- u_long v;
+ u_int32_t v;
static int warn = 1;
-#ifdef __APPLE__
- read_random(p, (u_int)l);
-#else
n = 0;
n = (size_t)read_random(p, (u_int)l);
/* last resort */
* OUT:
* 0: invalid satype.
*/
-static u_int16_t
-key_satype2proto(satype)
- u_int8_t satype;
+static u_int8_t
+key_satype2proto(
+ u_int8_t satype)
{
switch (satype) {
case SADB_SATYPE_UNSPEC:
return IPPROTO_AH;
case SADB_SATYPE_ESP:
return IPPROTO_ESP;
- case SADB_X_SATYPE_IPCOMP:
- return IPPROTO_IPCOMP;
- break;
default:
return 0;
}
* 0: invalid protocol type.
*/
static u_int8_t
-key_proto2satype(proto)
- u_int16_t proto;
+key_proto2satype(
+ u_int16_t proto)
{
switch (proto) {
case IPPROTO_AH:
return SADB_SATYPE_AH;
case IPPROTO_ESP:
return SADB_SATYPE_ESP;
- case IPPROTO_IPCOMP:
- return SADB_X_SATYPE_IPCOMP;
- break;
default:
return 0;
}
/* NOTREACHED */
}
+static ifnet_t
+key_get_ipsec_if_from_message(const struct sadb_msghdr *mhp, int message_type)
+{
+ struct sadb_x_ipsecif *ipsecifopts = NULL;
+ ifnet_t ipsec_if = NULL;
+
+ ipsecifopts = (struct sadb_x_ipsecif *)(void *)mhp->ext[message_type];
+ if (ipsecifopts != NULL) {
+ if (ipsecifopts->sadb_x_ipsecif_ipsec_if[0]) {
+ ipsecifopts->sadb_x_ipsecif_ipsec_if[IFXNAMSIZ - 1] = '\0';
+ ifnet_find_by_name(ipsecifopts->sadb_x_ipsecif_ipsec_if, &ipsec_if);
+ }
+ }
+
+ return ipsec_if;
+}
+
+static u_int
+key_get_outgoing_ifindex_from_message(const struct sadb_msghdr *mhp, int message_type)
+{
+ struct sadb_x_ipsecif *ipsecifopts = NULL;
+ ifnet_t outgoing_if = NULL;
+
+ ipsecifopts = (struct sadb_x_ipsecif *)(void *)mhp->ext[message_type];
+ if (ipsecifopts != NULL) {
+ if (ipsecifopts->sadb_x_ipsecif_outgoing_if[0]) {
+ ipsecifopts->sadb_x_ipsecif_outgoing_if[IFXNAMSIZ - 1] = '\0';
+ ifnet_find_by_name(ipsecifopts->sadb_x_ipsecif_outgoing_if, &outgoing_if);
+ }
+ }
+
+ u_int outgoing_if_index = 0;
+ if (outgoing_if != NULL) {
+ outgoing_if_index = outgoing_if->if_index;
+ ifnet_release(outgoing_if);
+ }
+
+ return outgoing_if_index;
+}
+
/* %%% PF_KEY */
/*
* SADB_GETSPI processing is to receive
* other if success, return pointer to the message to send.
*/
static int
-key_getspi(so, m, mhp)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_getspi(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
struct sadb_address *src0, *dst0;
struct secasindex saidx;
struct secashead *newsah;
struct secasvar *newsav;
+ ifnet_t ipsec_if = NULL;
u_int8_t proto;
u_int32_t spi;
u_int8_t mode;
u_int32_t reqid;
int error;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_getspi: NULL pointer is passed.\n");
+ }
if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) {
return key_senderror(so, m, EINVAL);
}
if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
- mode = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
- reqid = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
+ mode = ((struct sadb_x_sa2 *)
+ (void *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
+ reqid = ((struct sadb_x_sa2 *)
+ (void *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
} else {
mode = IPSEC_MODE_ANY;
reqid = 0;
switch (((struct sockaddr *)(src0 + 1))->sa_family) {
case AF_INET:
if (((struct sockaddr *)(src0 + 1))->sa_len !=
- sizeof(struct sockaddr_in))
+ sizeof(struct sockaddr_in)) {
return key_senderror(so, m, EINVAL);
- ((struct sockaddr_in *)(src0 + 1))->sin_port = 0;
+ }
+ ((struct sockaddr_in *)(void *)(src0 + 1))->sin_port = 0;
break;
case AF_INET6:
if (((struct sockaddr *)(src0 + 1))->sa_len !=
- sizeof(struct sockaddr_in6))
+ sizeof(struct sockaddr_in6)) {
return key_senderror(so, m, EINVAL);
- ((struct sockaddr_in6 *)(src0 + 1))->sin6_port = 0;
+ }
+ ((struct sockaddr_in6 *)(void *)(src0 + 1))->sin6_port = 0;
break;
default:
- ; /*???*/
+ ; /*???*/
}
switch (((struct sockaddr *)(dst0 + 1))->sa_family) {
case AF_INET:
if (((struct sockaddr *)(dst0 + 1))->sa_len !=
- sizeof(struct sockaddr_in))
+ sizeof(struct sockaddr_in)) {
return key_senderror(so, m, EINVAL);
- ((struct sockaddr_in *)(dst0 + 1))->sin_port = 0;
+ }
+ ((struct sockaddr_in *)(void *)(dst0 + 1))->sin_port = 0;
break;
case AF_INET6:
if (((struct sockaddr *)(dst0 + 1))->sa_len !=
- sizeof(struct sockaddr_in6))
+ sizeof(struct sockaddr_in6)) {
return key_senderror(so, m, EINVAL);
- ((struct sockaddr_in6 *)(dst0 + 1))->sin6_port = 0;
+ }
+ ((struct sockaddr_in6 *)(void *)(dst0 + 1))->sin6_port = 0;
break;
default:
- ; /*???*/
+ ; /*???*/
}
+ ipsec_if = key_get_ipsec_if_from_message(mhp, SADB_X_EXT_IPSECIF);
+
/* XXX boundary check against sa_len */
- KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
+ KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, ipsec_if ? ipsec_if->if_index : 0, &saidx);
+
+ lck_mtx_lock(sadb_mutex);
/* SPI allocation */
- spi = key_do_getnewspi((struct sadb_spirange *)mhp->ext[SADB_EXT_SPIRANGE],
- &saidx);
- if (spi == 0)
+ spi = key_do_getnewspi((struct sadb_spirange *)
+ (void *)mhp->ext[SADB_EXT_SPIRANGE], &saidx);
+ if (spi == 0) {
+ lck_mtx_unlock(sadb_mutex);
+ if (ipsec_if != NULL) {
+ ifnet_release(ipsec_if);
+ }
return key_senderror(so, m, EINVAL);
+ }
/* get a SA index */
- if ((newsah = key_getsah(&saidx)) == NULL) {
- /* create a new SA index */
- if ((newsah = key_newsah(&saidx)) == NULL) {
+ if ((newsah = key_getsah(&saidx, SECURITY_ASSOCIATION_ANY)) == NULL) {
+ /* create a new SA index: key_addspi is always used for inbound spi */
+ if ((newsah = key_newsah(&saidx, ipsec_if, key_get_outgoing_ifindex_from_message(mhp, SADB_X_EXT_IPSECIF), IPSEC_DIR_INBOUND, SECURITY_ASSOCIATION_PFKEY)) == NULL) {
+ lck_mtx_unlock(sadb_mutex);
+ if (ipsec_if != NULL) {
+ ifnet_release(ipsec_if);
+ }
ipseclog((LOG_DEBUG, "key_getspi: No more memory.\n"));
return key_senderror(so, m, ENOBUFS);
}
}
+ if (ipsec_if != NULL) {
+ ifnet_release(ipsec_if);
+ ipsec_if = NULL;
+ }
+
+ // Increment use count, since key_newsav() could release sadb_mutex lock
+ newsah->use_count++;
+
+ if ((newsah->flags & SECURITY_ASSOCIATION_CUSTOM_IPSEC) == SECURITY_ASSOCIATION_CUSTOM_IPSEC) {
+ newsah->use_count--;
+ lck_mtx_unlock(sadb_mutex);
+ ipseclog((LOG_ERR, "key_getspi: custom ipsec exists\n"));
+ return key_senderror(so, m, EEXIST);
+ }
+
/* get a new SA */
/* XXX rewrite */
- newsav = key_newsav(m, mhp, newsah, &error);
+ newsav = key_newsav(m, mhp, newsah, &error, so);
if (newsav == NULL) {
/* XXX don't free new SA index allocated in above. */
+ newsah->use_count--;
+ lck_mtx_unlock(sadb_mutex);
return key_senderror(so, m, error);
}
+ if (newsah->state == SADB_SASTATE_DEAD) {
+ newsah->use_count--;
+ key_sa_chgstate(newsav, SADB_SASTATE_DEAD);
+ key_freesav(newsav, KEY_SADB_LOCKED);
+ lck_mtx_unlock(sadb_mutex);
+ ipseclog((LOG_ERR, "key_getspi: security association head is dead\n"));
+ return key_senderror(so, m, EINVAL);
+ }
+
/* set spi */
key_setspi(newsav, htonl(spi));
acq->created = tv.tv_sec;
acq->count = 0;
}
- }
+ }
#endif
+ newsah->use_count--;
+ lck_mtx_unlock(sadb_mutex);
- {
- struct mbuf *n, *nn;
- struct sadb_sa *m_sa;
- struct sadb_msg *newmsg;
- int off, len;
-
- /* create new sadb_msg to reply. */
- len = PFKEY_ALIGN8(sizeof(struct sadb_msg)) +
- PFKEY_ALIGN8(sizeof(struct sadb_sa));
- if (len > MCLBYTES)
- return key_senderror(so, m, ENOBUFS);
+ {
+ struct mbuf *n, *nn;
+ struct sadb_sa *m_sa;
+ struct sadb_msg *newmsg;
+ int off, len;
+
+ /* create new sadb_msg to reply. */
+ len = PFKEY_ALIGN8(sizeof(struct sadb_msg)) +
+ PFKEY_ALIGN8(sizeof(struct sadb_sa));
+ if (len > MCLBYTES) {
+ return key_senderror(so, m, ENOBUFS);
+ }
- MGETHDR(n, M_DONTWAIT, MT_DATA);
- if (len > MHLEN) {
- MCLGET(n, M_DONTWAIT);
- if ((n->m_flags & M_EXT) == 0) {
- m_freem(n);
- n = NULL;
+ MGETHDR(n, M_WAITOK, MT_DATA);
+ if (n && len > MHLEN) {
+ MCLGET(n, M_WAITOK);
+ if ((n->m_flags & M_EXT) == 0) {
+ m_freem(n);
+ n = NULL;
+ }
+ }
+ if (!n) {
+ return key_senderror(so, m, ENOBUFS);
}
- }
- if (!n)
- return key_senderror(so, m, ENOBUFS);
- n->m_len = len;
- n->m_next = NULL;
- off = 0;
+ n->m_len = len;
+ n->m_next = NULL;
+ off = 0;
- m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
- off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
+ m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
+ off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
- m_sa = (struct sadb_sa *)(mtod(n, caddr_t) + off);
- m_sa->sadb_sa_len = PFKEY_UNIT64(sizeof(struct sadb_sa));
- m_sa->sadb_sa_exttype = SADB_EXT_SA;
- m_sa->sadb_sa_spi = htonl(spi);
- off += PFKEY_ALIGN8(sizeof(struct sadb_sa));
+ m_sa = (struct sadb_sa *)(void *)(mtod(n, caddr_t) + off);
+ memset(m_sa, 0, PFKEY_ALIGN8(sizeof(struct sadb_sa)));
+ m_sa->sadb_sa_len = PFKEY_UNIT64(sizeof(struct sadb_sa));
+ m_sa->sadb_sa_exttype = SADB_EXT_SA;
+ m_sa->sadb_sa_spi = htonl(spi);
+ off += PFKEY_ALIGN8(sizeof(struct sadb_sa));
#if DIAGNOSTIC
- if (off != len)
- panic("length inconsistency in key_getspi");
+ if (off != len) {
+ panic("length inconsistency in key_getspi");
+ }
#endif
- {
- int mbufItems[] = {SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST};
- n->m_next = key_gather_mbuf(m, mhp, 0, sizeof(mbufItems)/sizeof(int), mbufItems);
- if (!n->m_next) {
- m_freem(n);
- return key_senderror(so, m, ENOBUFS);
- }
- }
+ {
+ int mbufItems[] = {SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST};
+ n->m_next = key_gather_mbuf(m, mhp, 0, sizeof(mbufItems) / sizeof(int), mbufItems);
+ if (!n->m_next) {
+ m_freem(n);
+ return key_senderror(so, m, ENOBUFS);
+ }
+ }
- if (n->m_len < sizeof(struct sadb_msg)) {
- n = m_pullup(n, sizeof(struct sadb_msg));
- if (n == NULL)
- return key_sendup_mbuf(so, m, KEY_SENDUP_ONE);
- }
+ if (n->m_len < sizeof(struct sadb_msg)) {
+ n = m_pullup(n, sizeof(struct sadb_msg));
+ if (n == NULL) {
+ return key_sendup_mbuf(so, m, KEY_SENDUP_ONE);
+ }
+ }
- n->m_pkthdr.len = 0;
- for (nn = n; nn; nn = nn->m_next)
- n->m_pkthdr.len += nn->m_len;
+ n->m_pkthdr.len = 0;
+ for (nn = n; nn; nn = nn->m_next) {
+ n->m_pkthdr.len += nn->m_len;
+ }
- newmsg = mtod(n, struct sadb_msg *);
- newmsg->sadb_msg_seq = newsav->seq;
- newmsg->sadb_msg_errno = 0;
- newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
+ newmsg = mtod(n, struct sadb_msg *);
+ newmsg->sadb_msg_seq = newsav->seq;
+ newmsg->sadb_msg_errno = 0;
+ VERIFY(PFKEY_UNIT64(n->m_pkthdr.len) <= UINT16_MAX);
+ newmsg->sadb_msg_len = (u_int16_t)PFKEY_UNIT64(n->m_pkthdr.len);
- m_freem(m);
- return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
- }
+ m_freem(m);
+ return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
+ }
}
/*
* others: success.
*/
static u_int32_t
-key_do_getnewspi(spirange, saidx)
- struct sadb_spirange *spirange;
- struct secasindex *saidx;
+key_do_getnewspi(
+ struct sadb_spirange *spirange,
+ struct secasindex *saidx)
{
u_int32_t newspi;
- u_int32_t min, max;
+ u_int32_t keymin, keymax;
int count = key_spi_trycnt;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
/* set spi range to allocate */
if (spirange != NULL) {
- min = spirange->sadb_spirange_min;
- max = spirange->sadb_spirange_max;
+ keymin = spirange->sadb_spirange_min;
+ keymax = spirange->sadb_spirange_max;
} else {
- min = key_spi_minval;
- max = key_spi_maxval;
- }
- /* IPCOMP needs 2-byte SPI */
- if (saidx->proto == IPPROTO_IPCOMP) {
- u_int32_t t;
- if (min >= 0x10000)
- min = 0xffff;
- if (max >= 0x10000)
- max = 0xffff;
- if (min > max) {
- t = min; min = max; max = t;
- }
+ keymin = key_spi_minval;
+ keymax = key_spi_maxval;
}
-
- if (min == max) {
- if (key_checkspidup(saidx, min) != NULL) {
- ipseclog((LOG_DEBUG, "key_do_getnewspi: SPI %u exists already.\n", min));
+ if (keymin == keymax) {
+ if (key_checkspidup(saidx, keymin) != NULL) {
+ ipseclog((LOG_DEBUG, "key_do_getnewspi: SPI %u exists already.\n", keymin));
return 0;
}
count--; /* taking one cost. */
- newspi = min;
-
+ newspi = keymin;
} else {
+ u_int32_t range = keymax - keymin + 1; /* overflow value of zero means full range */
/* init SPI */
newspi = 0;
/* when requesting to allocate spi ranged */
while (count--) {
+ u_int32_t rand_val = key_random();
+
/* generate pseudo-random SPI value ranged. */
- newspi = min + (key_random() % (max - min + 1));
+ newspi = (range == 0 ? rand_val : keymin + (rand_val % range));
- if (key_checkspidup(saidx, newspi) == NULL)
+ if (key_checkspidup(saidx, newspi) == NULL) {
break;
+ }
}
if (count == 0 || newspi == 0) {
/* statistics */
keystat.getspi_count =
- (keystat.getspi_count + key_spi_trycnt - count) / 2;
+ (keystat.getspi_count + key_spi_trycnt - count) / 2;
return newspi;
}
* m will always be freed.
*/
static int
-key_update(so, m, mhp)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_update(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
- struct sadb_sa *sa0;
- struct sadb_address *src0, *dst0;
+ struct sadb_sa *sa0 = NULL;
+ struct sadb_address *src0 = NULL, *dst0 = NULL;
+ ifnet_t ipsec_if = NULL;
struct secasindex saidx;
- struct secashead *sah;
- struct secasvar *sav;
- u_int16_t proto;
+ struct secashead *sah = NULL;
+ struct secasvar *sav = NULL;
+ u_int8_t proto;
u_int8_t mode;
u_int32_t reqid;
+ u_int16_t flags2;
int error;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_update: NULL pointer is passed.\n");
+ }
/* map satype to proto */
if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
ipseclog((LOG_DEBUG, "key_update: invalid satype is passed.\n"));
+ bzero_keys(mhp);
return key_senderror(so, m, EINVAL);
}
mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
(mhp->msg->sadb_msg_satype == SADB_SATYPE_ESP &&
- mhp->ext[SADB_EXT_KEY_ENCRYPT] == NULL) ||
+ mhp->ext[SADB_EXT_KEY_ENCRYPT] == NULL) ||
(mhp->msg->sadb_msg_satype == SADB_SATYPE_AH &&
- mhp->ext[SADB_EXT_KEY_AUTH] == NULL) ||
+ mhp->ext[SADB_EXT_KEY_AUTH] == NULL) ||
(mhp->ext[SADB_EXT_LIFETIME_HARD] != NULL &&
- mhp->ext[SADB_EXT_LIFETIME_SOFT] == NULL) ||
+ mhp->ext[SADB_EXT_LIFETIME_SOFT] == NULL) ||
(mhp->ext[SADB_EXT_LIFETIME_HARD] == NULL &&
- mhp->ext[SADB_EXT_LIFETIME_SOFT] != NULL)) {
+ mhp->ext[SADB_EXT_LIFETIME_SOFT] != NULL)) {
ipseclog((LOG_DEBUG, "key_update: invalid message is passed.\n"));
+ bzero_keys(mhp);
return key_senderror(so, m, EINVAL);
}
if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa) ||
mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
ipseclog((LOG_DEBUG, "key_update: invalid message is passed.\n"));
+ bzero_keys(mhp);
return key_senderror(so, m, EINVAL);
}
if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
- mode = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
- reqid = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
+ mode = ((struct sadb_x_sa2 *)
+ (void *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
+ reqid = ((struct sadb_x_sa2 *)
+ (void *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
+ flags2 = ((struct sadb_x_sa2 *)(void *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_flags;
} else {
mode = IPSEC_MODE_ANY;
reqid = 0;
+ flags2 = 0;
}
/* XXX boundary checking for other extensions */
- sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
+ sa0 = (struct sadb_sa *)(void *)mhp->ext[SADB_EXT_SA];
src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
+ ipsec_if = key_get_ipsec_if_from_message(mhp, SADB_X_EXT_IPSECIF);
+
+ u_int ipsec_if_index = 0;
+ if (ipsec_if != NULL) {
+ ipsec_if_index = ipsec_if->if_index;
+ ifnet_release(ipsec_if);
+ ipsec_if = NULL;
+ }
/* XXX boundary check against sa_len */
- KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
+ KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, ipsec_if_index, &saidx);
+
+ lck_mtx_lock(sadb_mutex);
/* get a SA header */
- if ((sah = key_getsah(&saidx)) == NULL) {
+ if ((sah = key_getsah(&saidx, SECURITY_ASSOCIATION_PFKEY)) == NULL) {
+ lck_mtx_unlock(sadb_mutex);
ipseclog((LOG_DEBUG, "key_update: no SA index found.\n"));
+ bzero_keys(mhp);
return key_senderror(so, m, ENOENT);
}
- /* set spidx if there */
- /* XXX rewrite */
- error = key_setident(sah, m, mhp);
- if (error)
- return key_senderror(so, m, error);
+ // Increment use count, since key_setsaval() could release sadb_mutex lock
+ sah->use_count++;
- /* find a SA with sequence number. */
-#if IPSEC_DOSEQCHECK
- if (mhp->msg->sadb_msg_seq != 0
- && (sav = key_getsavbyseq(sah, mhp->msg->sadb_msg_seq)) == NULL) {
- ipseclog((LOG_DEBUG,
- "key_update: no larval SA with sequence %u exists.\n",
- mhp->msg->sadb_msg_seq));
- return key_senderror(so, m, ENOENT);
- }
-#else
if ((sav = key_getsavbyspi(sah, sa0->sadb_sa_spi)) == NULL) {
ipseclog((LOG_DEBUG,
"key_update: no such a SA found (spi:%u)\n",
(u_int32_t)ntohl(sa0->sadb_sa_spi)));
- return key_senderror(so, m, EINVAL);
+ error = EINVAL;
+ goto fail;
}
-#endif
+
+ // Increment reference count, since key_setsaval() could release sadb_mutex lock
+ sav->refcnt++;
/* validity check */
if (sav->sah->saidx.proto != proto) {
ipseclog((LOG_DEBUG,
"key_update: protocol mismatched (DB=%u param=%u)\n",
sav->sah->saidx.proto, proto));
- return key_senderror(so, m, EINVAL);
- }
-#if IPSEC_DOSEQCHECK
- if (sav->spi != sa0->sadb_sa_spi) {
- ipseclog((LOG_DEBUG,
- "key_update: SPI mismatched (DB:%u param:%u)\n",
- (u_int32_t)ntohl(sav->spi),
- (u_int32_t)ntohl(sa0->sadb_sa_spi)));
- return key_senderror(so, m, EINVAL);
+ error = EINVAL;
+ goto fail;
}
-#endif
+
if (sav->pid != mhp->msg->sadb_msg_pid) {
ipseclog((LOG_DEBUG,
"key_update: pid mismatched (DB:%u param:%u)\n",
sav->pid, mhp->msg->sadb_msg_pid));
- return key_senderror(so, m, EINVAL);
+ error = EINVAL;
+ goto fail;
}
/* copy sav values */
error = key_setsaval(sav, m, mhp);
if (error) {
- key_freesav(sav);
- return key_senderror(so, m, error);
+ goto fail;
}
- /* check SA values to be mature. */
- if ((error = key_mature(sav)) != 0) {
- key_freesav(sav);
- return key_senderror(so, m, error);
+ if (sah->state == SADB_SASTATE_DEAD) {
+ ipseclog((LOG_ERR,
+ "key_update: security association head is dead\n"));
+ error = EINVAL;
+ goto fail;
}
- {
- struct mbuf *n;
-
- /* set msg buf from mhp */
- n = key_getmsgbuf_x1(m, mhp);
- if (n == NULL) {
- ipseclog((LOG_DEBUG, "key_update: No more memory.\n"));
- return key_senderror(so, m, ENOBUFS);
+ sav->flags2 = flags2;
+ if (flags2 & SADB_X_EXT_SA2_DELETE_ON_DETACH) {
+ sav->so = so;
}
- m_freem(m);
- return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
- }
-}
-
-/*
- * search SAD with sequence for a SA which state is SADB_SASTATE_LARVAL.
- * only called by key_update().
- * OUT:
- * NULL : not found
- * others : found, pointer to a SA.
- */
-#if IPSEC_DOSEQCHECK
-static struct secasvar *
-key_getsavbyseq(sah, seq)
- struct secashead *sah;
- u_int32_t seq;
-{
- struct secasvar *sav;
- u_int state;
-
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ /*
+ * Verify if SADB_X_EXT_NATT_MULTIPLEUSERS flag is set that
+ * this SA is for transport mode - otherwise clear it.
+ */
+ if ((sav->flags & SADB_X_EXT_NATT_MULTIPLEUSERS) != 0 &&
+ (sav->sah->saidx.mode != IPSEC_MODE_TRANSPORT ||
+ sav->sah->saidx.src.ss_family != AF_INET)) {
+ sav->flags &= ~SADB_X_EXT_NATT_MULTIPLEUSERS;
+ }
- state = SADB_SASTATE_LARVAL;
+ /* check SA values to be mature. */
+ if ((error = key_mature(sav)) != 0) {
+ goto fail;
+ }
- /* search SAD with sequence number ? */
- LIST_FOREACH(sav, &sah->savtree[state], chain) {
+ key_freesav(sav, KEY_SADB_LOCKED);
+ sah->use_count--;
+ lck_mtx_unlock(sadb_mutex);
- KEY_CHKSASTATE(state, sav->state, "key_getsabyseq");
+ {
+ struct mbuf *n;
- if (sav->seq == seq) {
- sav->refcnt++;
- KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
- printf("DP key_getsavbyseq cause "
- "refcnt++:%d SA:%p\n",
- sav->refcnt, sav));
- return sav;
+ /* set msg buf from mhp */
+ n = key_getmsgbuf_x1(m, mhp);
+ if (n == NULL) {
+ ipseclog((LOG_DEBUG, "key_update: No more memory.\n"));
+ return key_senderror(so, m, ENOBUFS);
}
+
+ bzero_keys(mhp);
+ m_freem(m);
+ return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
+ }
+fail:
+ if (sav != NULL) {
+ key_freesav(sav, KEY_SADB_LOCKED);
+ }
+ if (sah != NULL) {
+ sah->use_count--;
}
- return NULL;
+ lck_mtx_unlock(sadb_mutex);
+ bzero_keys(mhp);
+ return key_senderror(so, m, error);
}
-#endif
-/*
- * SADB_ADD processing
- * add a entry to SA database, when received
- * <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
- * key(AE), (identity(SD),) (sensitivity)>
- * from the ikmpd,
- * and send
- * <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
- * (identity(SD),) (sensitivity)>
- * to the ikmpd.
- *
- * IGNORE identity and sensitivity messages.
- *
- * m will always be freed.
- */
static int
-key_add(so, m, mhp)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_migrate(struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
- struct sadb_sa *sa0;
- struct sadb_address *src0, *dst0;
- struct secasindex saidx;
- struct secashead *newsah;
- struct secasvar *newsav;
- u_int16_t proto;
- u_int8_t mode;
- u_int32_t reqid;
- int error;
+ struct sadb_sa *sa0 = NULL;
+ struct sadb_address *src0 = NULL;
+ struct sadb_address *dst0 = NULL;
+ struct sadb_address *src1 = NULL;
+ struct sadb_address *dst1 = NULL;
+ ifnet_t ipsec_if0 = NULL;
+ ifnet_t ipsec_if1 = NULL;
+ struct secasindex saidx0;
+ struct secasindex saidx1;
+ struct secashead *sah = NULL;
+ struct secashead *newsah = NULL;
+ struct secasvar *sav = NULL;
+ u_int8_t proto;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
- panic("key_add: NULL pointer is passed.\n");
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
+ panic("key_migrate: NULL pointer is passed.\n");
+ }
/* map satype to proto */
if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
- ipseclog((LOG_DEBUG, "key_add: invalid satype is passed.\n"));
+ ipseclog((LOG_DEBUG, "key_migrate: invalid satype is passed.\n"));
return key_senderror(so, m, EINVAL);
}
if (mhp->ext[SADB_EXT_SA] == NULL ||
mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
- (mhp->msg->sadb_msg_satype == SADB_SATYPE_ESP &&
- mhp->ext[SADB_EXT_KEY_ENCRYPT] == NULL) ||
- (mhp->msg->sadb_msg_satype == SADB_SATYPE_AH &&
- mhp->ext[SADB_EXT_KEY_AUTH] == NULL) ||
- (mhp->ext[SADB_EXT_LIFETIME_HARD] != NULL &&
- mhp->ext[SADB_EXT_LIFETIME_SOFT] == NULL) ||
- (mhp->ext[SADB_EXT_LIFETIME_HARD] == NULL &&
- mhp->ext[SADB_EXT_LIFETIME_SOFT] != NULL)) {
- ipseclog((LOG_DEBUG, "key_add: invalid message is passed.\n"));
+ mhp->ext[SADB_EXT_MIGRATE_ADDRESS_SRC] == NULL ||
+ mhp->ext[SADB_EXT_MIGRATE_ADDRESS_DST] == NULL) {
+ ipseclog((LOG_DEBUG, "key_migrate: invalid message is passed.\n"));
return key_senderror(so, m, EINVAL);
}
+
if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa) ||
mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
- mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
- /* XXX need more */
- ipseclog((LOG_DEBUG, "key_add: invalid message is passed.\n"));
+ mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address) ||
+ mhp->extlen[SADB_EXT_MIGRATE_ADDRESS_SRC] < sizeof(struct sadb_address) ||
+ mhp->extlen[SADB_EXT_MIGRATE_ADDRESS_DST] < sizeof(struct sadb_address)) {
+ ipseclog((LOG_DEBUG, "key_migrate: invalid message is passed.\n"));
return key_senderror(so, m, EINVAL);
}
- if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
- mode = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
- reqid = ((struct sadb_x_sa2 *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
- } else {
- mode = IPSEC_MODE_ANY;
- reqid = 0;
- }
- sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
- src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
- dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
+ lck_mtx_lock(sadb_mutex);
- /* XXX boundary check against sa_len */
- KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, &saidx);
+ sa0 = (struct sadb_sa *)(void *)mhp->ext[SADB_EXT_SA];
+ src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
+ dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
+ src1 = (struct sadb_address *)(mhp->ext[SADB_EXT_MIGRATE_ADDRESS_SRC]);
+ dst1 = (struct sadb_address *)(mhp->ext[SADB_EXT_MIGRATE_ADDRESS_DST]);
+ ipsec_if0 = key_get_ipsec_if_from_message(mhp, SADB_X_EXT_IPSECIF);
+ ipsec_if1 = key_get_ipsec_if_from_message(mhp, SADB_X_EXT_MIGRATE_IPSECIF);
- /* get a SA header */
- if ((newsah = key_getsah(&saidx)) == NULL) {
- /* create a new SA header */
- if ((newsah = key_newsah(&saidx)) == NULL) {
- ipseclog((LOG_DEBUG, "key_add: No more memory.\n"));
+ u_int ipsec_if0_index = 0;
+ if (ipsec_if0 != NULL) {
+ ipsec_if0_index = ipsec_if0->if_index;
+ ifnet_release(ipsec_if0);
+ ipsec_if0 = NULL;
+ }
+
+ /* Find existing SAH and SAV */
+ KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, ipsec_if0_index, &saidx0);
+
+ LIST_FOREACH(sah, &sahtree, chain) {
+ if (sah->state != SADB_SASTATE_MATURE) {
+ continue;
+ }
+ if (key_cmpsaidx(&sah->saidx, &saidx0, CMP_HEAD) == 0) {
+ continue;
+ }
+
+ sav = key_getsavbyspi(sah, sa0->sadb_sa_spi);
+ if (sav && sav->state == SADB_SASTATE_MATURE) {
+ break;
+ }
+ }
+ if (sah == NULL) {
+ lck_mtx_unlock(sadb_mutex);
+ if (ipsec_if1 != NULL) {
+ ifnet_release(ipsec_if1);
+ }
+ ipseclog((LOG_DEBUG, "key_migrate: no mature SAH found.\n"));
+ return key_senderror(so, m, ENOENT);
+ }
+
+ if (sav == NULL) {
+ lck_mtx_unlock(sadb_mutex);
+ if (ipsec_if1 != NULL) {
+ ifnet_release(ipsec_if1);
+ }
+ ipseclog((LOG_DEBUG, "key_migrate: no SA found.\n"));
+ return key_senderror(so, m, ENOENT);
+ }
+
+ /* Find or create new SAH */
+ KEY_SETSECASIDX(proto, sah->saidx.mode, sah->saidx.reqid, src1 + 1, dst1 + 1, ipsec_if1 ? ipsec_if1->if_index : 0, &saidx1);
+
+ if ((newsah = key_getsah(&saidx1, SECURITY_ASSOCIATION_ANY)) == NULL) {
+ if ((newsah = key_newsah(&saidx1, ipsec_if1, key_get_outgoing_ifindex_from_message(mhp, SADB_X_EXT_MIGRATE_IPSECIF), sah->dir, SECURITY_ASSOCIATION_PFKEY)) == NULL) {
+ lck_mtx_unlock(sadb_mutex);
+ if (ipsec_if1 != NULL) {
+ ifnet_release(ipsec_if1);
+ }
+ ipseclog((LOG_DEBUG, "key_migrate: No more memory.\n"));
return key_senderror(so, m, ENOBUFS);
}
}
- /* set spidx if there */
- /* XXX rewrite */
- error = key_setident(newsah, m, mhp);
- if (error) {
- return key_senderror(so, m, error);
+ if (ipsec_if1 != NULL) {
+ ifnet_release(ipsec_if1);
+ ipsec_if1 = NULL;
}
- /* create new SA entry. */
- /* We can create new SA only if SPI is differenct. */
- if (key_getsavbyspi(newsah, sa0->sadb_sa_spi)) {
- ipseclog((LOG_DEBUG, "key_add: SA already exists.\n"));
+ if ((newsah->flags & SECURITY_ASSOCIATION_CUSTOM_IPSEC) == SECURITY_ASSOCIATION_CUSTOM_IPSEC) {
+ lck_mtx_unlock(sadb_mutex);
+ ipseclog((LOG_ERR, "key_migrate: custom ipsec exists\n"));
return key_senderror(so, m, EEXIST);
}
- newsav = key_newsav(m, mhp, newsah, &error);
- if (newsav == NULL) {
- return key_senderror(so, m, error);
- }
- /* check SA values to be mature. */
- if ((error = key_mature(newsav)) != 0) {
- key_freesav(newsav);
- return key_senderror(so, m, error);
+ /* Migrate SAV in to new SAH */
+ if (key_migratesav(sav, newsah) != 0) {
+ lck_mtx_unlock(sadb_mutex);
+ ipseclog((LOG_DEBUG, "key_migrate: Failed to migrate SA to new SAH.\n"));
+ return key_senderror(so, m, EINVAL);
}
+ /* Reset NAT values */
+ sav->flags = sa0->sadb_sa_flags;
+ sav->natt_encapsulated_src_port = ((const struct sadb_sa_2*)(sa0))->sadb_sa_natt_src_port;
+ sav->remote_ike_port = ((const struct sadb_sa_2*)(sa0))->sadb_sa_natt_port;
+ sav->natt_interval = ((const struct sadb_sa_2*)(sa0))->sadb_sa_natt_interval;
+ sav->natt_offload_interval = ((const struct sadb_sa_2*)(sa0))->sadb_sa_natt_offload_interval;
+ sav->natt_last_activity = natt_now;
+
/*
- * don't call key_freesav() here, as we would like to keep the SA
- * in the database on success.
+ * Verify if SADB_X_EXT_NATT_MULTIPLEUSERS flag is set that
+ * SADB_X_EXT_NATT is set and SADB_X_EXT_NATT_KEEPALIVE is not
+ * set (we're not behind nat) - otherwise clear it.
*/
+ if ((sav->flags & SADB_X_EXT_NATT_MULTIPLEUSERS) != 0) {
+ if ((sav->flags & SADB_X_EXT_NATT) == 0 ||
+ (sav->flags & SADB_X_EXT_NATT_KEEPALIVE) != 0) {
+ sav->flags &= ~SADB_X_EXT_NATT_MULTIPLEUSERS;
+ }
+ }
- {
- struct mbuf *n;
+ lck_mtx_unlock(sadb_mutex);
+ {
+ struct mbuf *n;
+ struct sadb_msg *newmsg;
+ int mbufItems[] = {SADB_EXT_RESERVED, SADB_EXT_SA,
+ SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST, SADB_X_EXT_IPSECIF,
+ SADB_EXT_MIGRATE_ADDRESS_SRC, SADB_EXT_MIGRATE_ADDRESS_DST, SADB_X_EXT_MIGRATE_IPSECIF};
- /* set msg buf from mhp */
- n = key_getmsgbuf_x1(m, mhp);
- if (n == NULL) {
- ipseclog((LOG_DEBUG, "key_update: No more memory.\n"));
- return key_senderror(so, m, ENOBUFS);
- }
+ /* create new sadb_msg to reply. */
+ n = key_gather_mbuf(m, mhp, 1, sizeof(mbufItems) / sizeof(int), mbufItems);
+ if (!n) {
+ return key_senderror(so, m, ENOBUFS);
+ }
- m_freem(m);
- return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
- }
+ if (n->m_len < sizeof(struct sadb_msg)) {
+ n = m_pullup(n, sizeof(struct sadb_msg));
+ if (n == NULL) {
+ return key_senderror(so, m, ENOBUFS);
+ }
+ }
+ newmsg = mtod(n, struct sadb_msg *);
+ newmsg->sadb_msg_errno = 0;
+ VERIFY(PFKEY_UNIT64(n->m_pkthdr.len) <= UINT16_MAX);
+ newmsg->sadb_msg_len = (u_int16_t)PFKEY_UNIT64(n->m_pkthdr.len);
+
+ m_freem(m);
+ return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
+ }
}
-/* m is retained */
+/*
+ * SADB_ADD processing
+ * add a entry to SA database, when received
+ * <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
+ * key(AE), (identity(SD),) (sensitivity)>
+ * from the ikmpd,
+ * and send
+ * <base, SA, (SA2), (lifetime(HSC),) address(SD), (address(P),)
+ * (identity(SD),) (sensitivity)>
+ * to the ikmpd.
+ *
+ * IGNORE identity and sensitivity messages.
+ *
+ * m will always be freed.
+ */
static int
-key_setident(sah, m, mhp)
- struct secashead *sah;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_add(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
- const struct sadb_ident *idsrc, *iddst;
- int idsrclen, iddstlen;
+ struct sadb_sa *sa0 = NULL;
+ struct sadb_address *src0 = NULL, *dst0 = NULL;
+ ifnet_t ipsec_if = NULL;
+ struct secasindex saidx;
+ struct secashead *newsah = NULL;
+ struct secasvar *newsav = NULL;
+ u_int8_t proto;
+ u_int8_t mode;
+ u_int32_t reqid;
+ int error;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (sah == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
- panic("key_setident: NULL pointer is passed.\n");
-
- /* don't make buffer if not there */
- if (mhp->ext[SADB_EXT_IDENTITY_SRC] == NULL &&
- mhp->ext[SADB_EXT_IDENTITY_DST] == NULL) {
- sah->idents = NULL;
- sah->identd = NULL;
- return 0;
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
+ panic("key_add: NULL pointer is passed.\n");
}
-
- if (mhp->ext[SADB_EXT_IDENTITY_SRC] == NULL ||
- mhp->ext[SADB_EXT_IDENTITY_DST] == NULL) {
- ipseclog((LOG_DEBUG, "key_setident: invalid identity.\n"));
- return EINVAL;
+
+ /* map satype to proto */
+ if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
+ ipseclog((LOG_DEBUG, "key_add: invalid satype is passed.\n"));
+ bzero_keys(mhp);
+ return key_senderror(so, m, EINVAL);
+ }
+
+ if (mhp->ext[SADB_EXT_SA] == NULL ||
+ mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL ||
+ mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
+ (mhp->msg->sadb_msg_satype == SADB_SATYPE_ESP &&
+ mhp->ext[SADB_EXT_KEY_ENCRYPT] == NULL) ||
+ (mhp->msg->sadb_msg_satype == SADB_SATYPE_AH &&
+ mhp->ext[SADB_EXT_KEY_AUTH] == NULL) ||
+ (mhp->ext[SADB_EXT_LIFETIME_HARD] != NULL &&
+ mhp->ext[SADB_EXT_LIFETIME_SOFT] == NULL) ||
+ (mhp->ext[SADB_EXT_LIFETIME_HARD] == NULL &&
+ mhp->ext[SADB_EXT_LIFETIME_SOFT] != NULL)) {
+ ipseclog((LOG_DEBUG, "key_add: invalid message is passed.\n"));
+ bzero_keys(mhp);
+ return key_senderror(so, m, EINVAL);
+ }
+ if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa) ||
+ mhp->extlen[SADB_EXT_ADDRESS_SRC] < sizeof(struct sadb_address) ||
+ mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address)) {
+ /* XXX need more */
+ ipseclog((LOG_DEBUG, "key_add: invalid message is passed.\n"));
+ bzero_keys(mhp);
+ return key_senderror(so, m, EINVAL);
+ }
+ if (mhp->ext[SADB_X_EXT_SA2] != NULL) {
+ mode = ((struct sadb_x_sa2 *)
+ (void *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_mode;
+ reqid = ((struct sadb_x_sa2 *)
+ (void *)mhp->ext[SADB_X_EXT_SA2])->sadb_x_sa2_reqid;
+ } else {
+ mode = IPSEC_MODE_ANY;
+ reqid = 0;
}
- idsrc = (const struct sadb_ident *)mhp->ext[SADB_EXT_IDENTITY_SRC];
- iddst = (const struct sadb_ident *)mhp->ext[SADB_EXT_IDENTITY_DST];
- idsrclen = mhp->extlen[SADB_EXT_IDENTITY_SRC];
- iddstlen = mhp->extlen[SADB_EXT_IDENTITY_DST];
+ sa0 = (struct sadb_sa *)(void *)mhp->ext[SADB_EXT_SA];
+ src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
+ dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
+ ipsec_if = key_get_ipsec_if_from_message(mhp, SADB_X_EXT_IPSECIF);
- /* validity check */
- if (idsrc->sadb_ident_type != iddst->sadb_ident_type) {
- ipseclog((LOG_DEBUG, "key_setident: ident type mismatch.\n"));
- return EINVAL;
+ /* XXX boundary check against sa_len */
+ KEY_SETSECASIDX(proto, mode, reqid, src0 + 1, dst0 + 1, ipsec_if ? ipsec_if->if_index : 0, &saidx);
+
+ lck_mtx_lock(sadb_mutex);
+
+ /* get a SA header */
+ if ((newsah = key_getsah(&saidx, SECURITY_ASSOCIATION_ANY)) == NULL) {
+ /* create a new SA header: key_addspi is always used for outbound spi */
+ if ((newsah = key_newsah(&saidx, ipsec_if, key_get_outgoing_ifindex_from_message(mhp, SADB_X_EXT_IPSECIF), IPSEC_DIR_OUTBOUND, SECURITY_ASSOCIATION_PFKEY)) == NULL) {
+ ipseclog((LOG_DEBUG, "key_add: No more memory.\n"));
+ error = ENOBUFS;
+ goto fail;
+ }
}
- switch (idsrc->sadb_ident_type) {
- case SADB_IDENTTYPE_PREFIX:
- case SADB_IDENTTYPE_FQDN:
- case SADB_IDENTTYPE_USERFQDN:
- default:
- /* XXX do nothing */
- sah->idents = NULL;
- sah->identd = NULL;
- return 0;
+ if (ipsec_if != NULL) {
+ ifnet_release(ipsec_if);
+ ipsec_if = NULL;
}
- /* make structure */
- KMALLOC(sah->idents, struct sadb_ident *, idsrclen);
- if (sah->idents == NULL) {
- ipseclog((LOG_DEBUG, "key_setident: No more memory.\n"));
- return ENOBUFS;
+ // Increment use count, since key_newsav() could release sadb_mutex lock
+ newsah->use_count++;
+
+ if ((newsah->flags & SECURITY_ASSOCIATION_CUSTOM_IPSEC) == SECURITY_ASSOCIATION_CUSTOM_IPSEC) {
+ ipseclog((LOG_ERR, "key_add: custom ipsec exists\n"));
+ error = EEXIST;
+ goto fail;
}
- KMALLOC(sah->identd, struct sadb_ident *, iddstlen);
- if (sah->identd == NULL) {
- KFREE(sah->idents);
- sah->idents = NULL;
- ipseclog((LOG_DEBUG, "key_setident: No more memory.\n"));
- return ENOBUFS;
+
+ /* create new SA entry. */
+ /* We can create new SA only if SPI is different. */
+ if (key_getsavbyspi(newsah, sa0->sadb_sa_spi)) {
+ ipseclog((LOG_DEBUG, "key_add: SA already exists.\n"));
+ error = EEXIST;
+ goto fail;
+ }
+ newsav = key_newsav(m, mhp, newsah, &error, so);
+ if (newsav == NULL) {
+ goto fail;
}
- bcopy(idsrc, sah->idents, idsrclen);
- bcopy(iddst, sah->identd, iddstlen);
- return 0;
+ if (newsah->state == SADB_SASTATE_DEAD) {
+ ipseclog((LOG_ERR, "key_add: security association head is dead\n"));
+ error = EINVAL;
+ goto fail;
+ }
+
+ /*
+ * Verify if SADB_X_EXT_NATT_MULTIPLEUSERS flag is set that
+ * this SA is for transport mode - otherwise clear it.
+ */
+ if ((newsav->flags & SADB_X_EXT_NATT_MULTIPLEUSERS) != 0 &&
+ (newsah->saidx.mode != IPSEC_MODE_TRANSPORT ||
+ newsah->saidx.dst.ss_family != AF_INET)) {
+ newsav->flags &= ~SADB_X_EXT_NATT_MULTIPLEUSERS;
+ }
+
+ /* check SA values to be mature. */
+ if ((error = key_mature(newsav)) != 0) {
+ goto fail;
+ }
+
+ newsah->use_count--;
+ lck_mtx_unlock(sadb_mutex);
+
+ /*
+ * don't call key_freesav() here, as we would like to keep the SA
+ * in the database on success.
+ */
+
+ {
+ struct mbuf *n;
+
+ /* set msg buf from mhp */
+ n = key_getmsgbuf_x1(m, mhp);
+ if (n == NULL) {
+ ipseclog((LOG_DEBUG, "key_update: No more memory.\n"));
+ bzero_keys(mhp);
+ return key_senderror(so, m, ENOBUFS);
+ }
+
+ // mh.ext points to the mbuf content.
+ // Zero out Encryption and Integrity keys if present.
+ bzero_keys(mhp);
+ m_freem(m);
+ return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
+ }
+fail:
+ if (newsav != NULL) {
+ key_sa_chgstate(newsav, SADB_SASTATE_DEAD);
+ key_freesav(newsav, KEY_SADB_LOCKED);
+ }
+ if (newsah != NULL) {
+ newsah->use_count--;
+ }
+ lck_mtx_unlock(sadb_mutex);
+ if (ipsec_if != NULL) {
+ ifnet_release(ipsec_if);
+ }
+ bzero_keys(mhp);
+ return key_senderror(so, m, error);
}
/*
* m will not be freed on return.
- * it is caller's responsibility to free the result.
+ * it is caller's responsibility to free the result.
*/
static struct mbuf *
-key_getmsgbuf_x1(m, mhp)
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_getmsgbuf_x1(
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
struct mbuf *n;
int mbufItems[] = {SADB_EXT_RESERVED, SADB_EXT_SA,
- SADB_X_EXT_SA2, SADB_EXT_ADDRESS_SRC,
- SADB_EXT_ADDRESS_DST, SADB_EXT_LIFETIME_HARD,
- SADB_EXT_LIFETIME_SOFT, SADB_EXT_IDENTITY_SRC,
- SADB_EXT_IDENTITY_DST};
+ SADB_X_EXT_SA2, SADB_EXT_ADDRESS_SRC,
+ SADB_EXT_ADDRESS_DST, SADB_EXT_LIFETIME_HARD,
+ SADB_EXT_LIFETIME_SOFT, SADB_EXT_IDENTITY_SRC,
+ SADB_EXT_IDENTITY_DST};
/* sanity check */
- if (m == NULL || mhp == NULL || mhp->msg == NULL)
+ if (m == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_getmsgbuf_x1: NULL pointer is passed.\n");
+ }
/* create new sadb_msg to reply. */
- n = key_gather_mbuf(m, mhp, 1, sizeof(mbufItems)/sizeof(int), mbufItems);
- if (!n)
+ n = key_gather_mbuf(m, mhp, 1, sizeof(mbufItems) / sizeof(int), mbufItems);
+ if (!n) {
return NULL;
+ }
if (n->m_len < sizeof(struct sadb_msg)) {
n = m_pullup(n, sizeof(struct sadb_msg));
- if (n == NULL)
+ if (n == NULL) {
return NULL;
+ }
}
mtod(n, struct sadb_msg *)->sadb_msg_errno = 0;
+ VERIFY(PFKEY_UNIT64(n->m_pkthdr.len) <= UINT16_MAX);
mtod(n, struct sadb_msg *)->sadb_msg_len =
- PFKEY_UNIT64(n->m_pkthdr.len);
+ (u_int16_t)PFKEY_UNIT64(n->m_pkthdr.len);
return n;
}
static int key_delete_all(struct socket *, struct mbuf *,
- const struct sadb_msghdr *, u_int16_t);
+ const struct sadb_msghdr *, u_int16_t);
/*
* SADB_DELETE processing
* m will always be freed.
*/
static int
-key_delete(so, m, mhp)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_delete(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
struct sadb_sa *sa0;
struct sadb_address *src0, *dst0;
+ ifnet_t ipsec_if = NULL;
struct secasindex saidx;
struct secashead *sah;
struct secasvar *sav = NULL;
u_int16_t proto;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_delete: NULL pointer is passed.\n");
+ }
/* map satype to proto */
if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
return key_senderror(so, m, EINVAL);
}
+ lck_mtx_lock(sadb_mutex);
+
if (mhp->ext[SADB_EXT_SA] == NULL) {
/*
* Caller wants us to delete all non-LARVAL SAs
* IKE INITIAL-CONTACT.
*/
ipseclog((LOG_DEBUG, "key_delete: doing delete all.\n"));
+ /* key_delete_all will unlock sadb_mutex */
return key_delete_all(so, m, mhp, proto);
} else if (mhp->extlen[SADB_EXT_SA] < sizeof(struct sadb_sa)) {
+ lck_mtx_unlock(sadb_mutex);
ipseclog((LOG_DEBUG, "key_delete: invalid message is passed.\n"));
return key_senderror(so, m, EINVAL);
}
- sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
+ sa0 = (struct sadb_sa *)(void *)mhp->ext[SADB_EXT_SA];
src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
+ ipsec_if = key_get_ipsec_if_from_message(mhp, SADB_X_EXT_IPSECIF);
+
+ u_int ipsec_if_index = 0;
+ if (ipsec_if != NULL) {
+ ipsec_if_index = ipsec_if->if_index;
+ ifnet_release(ipsec_if);
+ ipsec_if = NULL;
+ }
/* XXX boundary check against sa_len */
- KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
+ KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, ipsec_if_index, &saidx);
+
/* get a SA header */
LIST_FOREACH(sah, &sahtree, chain) {
- if (sah->state == SADB_SASTATE_DEAD)
+ if (sah->state == SADB_SASTATE_DEAD) {
continue;
- if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0)
+ }
+ if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0) {
continue;
+ }
/* get a SA with SPI. */
sav = key_getsavbyspi(sah, sa0->sadb_sa_spi);
- if (sav)
+ if (sav) {
break;
+ }
}
if (sah == NULL) {
+ lck_mtx_unlock(sadb_mutex);
ipseclog((LOG_DEBUG, "key_delete: no SA found.\n"));
return key_senderror(so, m, ENOENT);
}
key_sa_chgstate(sav, SADB_SASTATE_DEAD);
- key_freesav(sav);
- sav = NULL;
+ key_freesav(sav, KEY_SADB_LOCKED);
- {
- struct mbuf *n;
- struct sadb_msg *newmsg;
- int mbufItems[] = {SADB_EXT_RESERVED, SADB_EXT_SA,
- SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST};
+ lck_mtx_unlock(sadb_mutex);
+ sav = NULL;
- /* create new sadb_msg to reply. */
- n = key_gather_mbuf(m, mhp, 1, sizeof(mbufItems)/sizeof(int), mbufItems);
- if (!n)
- return key_senderror(so, m, ENOBUFS);
+ {
+ struct mbuf *n;
+ struct sadb_msg *newmsg;
+ int mbufItems[] = {SADB_EXT_RESERVED, SADB_EXT_SA,
+ SADB_EXT_ADDRESS_SRC, SADB_EXT_ADDRESS_DST};
- if (n->m_len < sizeof(struct sadb_msg)) {
- n = m_pullup(n, sizeof(struct sadb_msg));
- if (n == NULL)
+ /* create new sadb_msg to reply. */
+ n = key_gather_mbuf(m, mhp, 1, sizeof(mbufItems) / sizeof(int), mbufItems);
+ if (!n) {
return key_senderror(so, m, ENOBUFS);
- }
- newmsg = mtod(n, struct sadb_msg *);
- newmsg->sadb_msg_errno = 0;
- newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
+ }
- m_freem(m);
- return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
- }
+ if (n->m_len < sizeof(struct sadb_msg)) {
+ n = m_pullup(n, sizeof(struct sadb_msg));
+ if (n == NULL) {
+ return key_senderror(so, m, ENOBUFS);
+ }
+ }
+ newmsg = mtod(n, struct sadb_msg *);
+ newmsg->sadb_msg_errno = 0;
+ VERIFY(PFKEY_UNIT64(n->m_pkthdr.len) <= UINT16_MAX);
+ newmsg->sadb_msg_len = (u_int16_t)PFKEY_UNIT64(n->m_pkthdr.len);
+
+ m_freem(m);
+ return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
+ }
}
/*
* delete all SAs for src/dst. Called from key_delete().
*/
static int
-key_delete_all(so, m, mhp, proto)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
- u_int16_t proto;
+key_delete_all(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp,
+ u_int16_t proto)
{
struct sadb_address *src0, *dst0;
+ ifnet_t ipsec_if = NULL;
struct secasindex saidx;
struct secashead *sah;
struct secasvar *sav, *nextsav;
u_int stateidx, state;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
src0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_SRC]);
dst0 = (struct sadb_address *)(mhp->ext[SADB_EXT_ADDRESS_DST]);
+ ipsec_if = key_get_ipsec_if_from_message(mhp, SADB_X_EXT_IPSECIF);
+
+ u_int ipsec_if_index = 0;
+ if (ipsec_if != NULL) {
+ ipsec_if_index = ipsec_if->if_index;
+ ifnet_release(ipsec_if);
+ ipsec_if = NULL;
+ }
/* XXX boundary check against sa_len */
- KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
+ KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, ipsec_if_index, &saidx);
LIST_FOREACH(sah, &sahtree, chain) {
- if (sah->state == SADB_SASTATE_DEAD)
+ if (sah->state == SADB_SASTATE_DEAD) {
continue;
- if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0)
+ }
+ if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0) {
continue;
+ }
/* Delete all non-LARVAL SAs. */
for (stateidx = 0;
- stateidx < _ARRAYLEN(saorder_state_alive);
- stateidx++) {
+ stateidx < _ARRAYLEN(saorder_state_alive);
+ stateidx++) {
state = saorder_state_alive[stateidx];
- if (state == SADB_SASTATE_LARVAL)
+ if (state == SADB_SASTATE_LARVAL) {
continue;
+ }
for (sav = LIST_FIRST(&sah->savtree[state]);
- sav != NULL; sav = nextsav) {
+ sav != NULL; sav = nextsav) {
nextsav = LIST_NEXT(sav, chain);
/* sanity check */
if (sav->state != state) {
ipseclog((LOG_DEBUG, "key_delete_all: "
- "invalid sav->state "
- "(queue: %d SA: %d)\n",
- state, sav->state));
+ "invalid sav->state "
+ "(queue: %d SA: %d)\n",
+ state, sav->state));
continue;
}
-
+
key_sa_chgstate(sav, SADB_SASTATE_DEAD);
- key_freesav(sav);
+ key_freesav(sav, KEY_SADB_LOCKED);
}
}
}
- {
- struct mbuf *n;
- struct sadb_msg *newmsg;
- int mbufItems[] = {SADB_EXT_RESERVED, SADB_EXT_ADDRESS_SRC,
- SADB_EXT_ADDRESS_DST};
+ lck_mtx_unlock(sadb_mutex);
- /* create new sadb_msg to reply. */
- n = key_gather_mbuf(m, mhp, 1, sizeof(mbufItems)/sizeof(int), mbufItems);
- if (!n)
- return key_senderror(so, m, ENOBUFS);
+ {
+ struct mbuf *n;
+ struct sadb_msg *newmsg;
+ int mbufItems[] = {SADB_EXT_RESERVED, SADB_EXT_ADDRESS_SRC,
+ SADB_EXT_ADDRESS_DST};
- if (n->m_len < sizeof(struct sadb_msg)) {
- n = m_pullup(n, sizeof(struct sadb_msg));
- if (n == NULL)
+ /* create new sadb_msg to reply. */
+ n = key_gather_mbuf(m, mhp, 1, sizeof(mbufItems) / sizeof(int), mbufItems);
+ if (!n) {
return key_senderror(so, m, ENOBUFS);
- }
- newmsg = mtod(n, struct sadb_msg *);
- newmsg->sadb_msg_errno = 0;
- newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len);
+ }
- m_freem(m);
- return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
- }
+ if (n->m_len < sizeof(struct sadb_msg)) {
+ n = m_pullup(n, sizeof(struct sadb_msg));
+ if (n == NULL) {
+ return key_senderror(so, m, ENOBUFS);
+ }
+ }
+ newmsg = mtod(n, struct sadb_msg *);
+ newmsg->sadb_msg_errno = 0;
+ VERIFY(PFKEY_UNIT64(n->m_pkthdr.len) <= UINT16_MAX);
+ newmsg->sadb_msg_len = (u_int16_t)PFKEY_UNIT64(n->m_pkthdr.len);
+
+ m_freem(m);
+ return key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
+ }
}
/*
* m will always be freed.
*/
static int
-key_get(so, m, mhp)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_get(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
struct sadb_sa *sa0;
struct sadb_address *src0, *dst0;
+ ifnet_t ipsec_if = NULL;
struct secasindex saidx;
struct secashead *sah;
struct secasvar *sav = NULL;
u_int16_t proto;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_get: NULL pointer is passed.\n");
+ }
/* map satype to proto */
if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
return key_senderror(so, m, EINVAL);
}
- sa0 = (struct sadb_sa *)mhp->ext[SADB_EXT_SA];
+ sa0 = (struct sadb_sa *)(void *)mhp->ext[SADB_EXT_SA];
src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
+ ipsec_if = key_get_ipsec_if_from_message(mhp, SADB_X_EXT_IPSECIF);
+
+ u_int ipsec_if_index = 0;
+ if (ipsec_if != NULL) {
+ ipsec_if_index = ipsec_if->if_index;
+ ifnet_release(ipsec_if);
+ ipsec_if = NULL;
+ }
/* XXX boundary check against sa_len */
- KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
+ KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, ipsec_if_index, &saidx);
+
+ lck_mtx_lock(sadb_mutex);
/* get a SA header */
LIST_FOREACH(sah, &sahtree, chain) {
- if (sah->state == SADB_SASTATE_DEAD)
+ if (sah->state == SADB_SASTATE_DEAD) {
continue;
- if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0)
+ }
+ if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0) {
continue;
+ }
/* get a SA with SPI. */
sav = key_getsavbyspi(sah, sa0->sadb_sa_spi);
- if (sav)
+ if (sav) {
break;
+ }
}
if (sah == NULL) {
+ lck_mtx_unlock(sadb_mutex);
ipseclog((LOG_DEBUG, "key_get: no SA found.\n"));
return key_senderror(so, m, ENOENT);
}
- {
- struct mbuf *n;
- u_int8_t satype;
+ {
+ struct mbuf *n;
+ u_int8_t satype;
- /* map proto to satype */
- if ((satype = key_proto2satype(sah->saidx.proto)) == 0) {
- ipseclog((LOG_DEBUG, "key_get: there was invalid proto in SAD.\n"));
- return key_senderror(so, m, EINVAL);
- }
+ /* map proto to satype */
+ if ((satype = key_proto2satype(sah->saidx.proto)) == 0) {
+ lck_mtx_unlock(sadb_mutex);
+ ipseclog((LOG_DEBUG, "key_get: there was invalid proto in SAD.\n"));
+ return key_senderror(so, m, EINVAL);
+ }
+ lck_mtx_unlock(sadb_mutex);
- /* create new sadb_msg to reply. */
- n = key_setdumpsa(sav, SADB_GET, satype, mhp->msg->sadb_msg_seq,
- mhp->msg->sadb_msg_pid);
- if (!n)
- return key_senderror(so, m, ENOBUFS);
+ /* create new sadb_msg to reply. */
+ n = key_setdumpsa(sav, SADB_GET, satype, mhp->msg->sadb_msg_seq,
+ mhp->msg->sadb_msg_pid);
- m_freem(m);
- return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
- }
+
+
+ if (!n) {
+ return key_senderror(so, m, ENOBUFS);
+ }
+
+ m_freem(m);
+ return key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
+ }
+}
+
+/*
+ * get SA stats by spi.
+ * OUT: -1 : not found
+ * 0 : found, arg pointer to a SA stats is updated.
+ */
+static int
+key_getsastatbyspi_one(u_int32_t spi,
+ struct sastat *stat)
+{
+ struct secashead *sah;
+ struct secasvar *sav = NULL;
+
+ if ((void *)stat == NULL) {
+ return -1;
+ }
+
+ lck_mtx_lock(sadb_mutex);
+
+ /* get a SA header */
+ LIST_FOREACH(sah, &sahtree, chain) {
+ if (sah->state == SADB_SASTATE_DEAD) {
+ continue;
+ }
+
+ /* get a SA with SPI. */
+ sav = key_getsavbyspi(sah, spi);
+ if (sav) {
+ stat->spi = sav->spi;
+ stat->created = (u_int32_t)sav->created;
+ if (sav->lft_c) {
+ bcopy(sav->lft_c, &stat->lft_c, sizeof(stat->lft_c));
+ } else {
+ bzero(&stat->lft_c, sizeof(stat->lft_c));
+ }
+ lck_mtx_unlock(sadb_mutex);
+ return 0;
+ }
+ }
+
+ lck_mtx_unlock(sadb_mutex);
+
+ return -1;
+}
+
+/*
+ * get SA stats collection by indices.
+ * OUT: -1 : not found
+ * 0 : found, arg pointers to a SA stats and 'maximum stats' are updated.
+ */
+static int
+key_getsastatbyspi(struct sastat *stat_arg,
+ u_int32_t max_stat_arg,
+ struct sastat *stat_res,
+ u_int64_t stat_res_size,
+ u_int32_t *max_stat_res)
+{
+ u_int32_t cur, found = 0;
+
+ if (stat_arg == NULL ||
+ stat_res == NULL ||
+ max_stat_res == NULL) {
+ return -1;
+ }
+
+ u_int64_t max_stats = stat_res_size / (sizeof(struct sastat));
+ max_stats = ((max_stat_arg <= max_stats) ? max_stat_arg : max_stats);
+
+ for (cur = 0; cur < max_stats; cur++) {
+ if (key_getsastatbyspi_one(stat_arg[cur].spi,
+ &stat_res[found]) == 0) {
+ found++;
+ }
+ }
+ *max_stat_res = found;
+
+ if (found) {
+ return 0;
+ }
+ return -1;
}
/* XXX make it sysctl-configurable? */
static void
-key_getcomb_setlifetime(comb)
- struct sadb_comb *comb;
+key_getcomb_setlifetime(
+ struct sadb_comb *comb)
{
-
comb->sadb_comb_soft_allocations = 1;
comb->sadb_comb_hard_allocations = 1;
comb->sadb_comb_soft_bytes = 0;
comb->sadb_comb_hard_bytes = 0;
- comb->sadb_comb_hard_addtime = 86400; /* 1 day */
+ comb->sadb_comb_hard_addtime = 86400; /* 1 day */
comb->sadb_comb_soft_addtime = comb->sadb_comb_soft_addtime * 80 / 100;
- comb->sadb_comb_soft_usetime = 28800; /* 8 hours */
+ comb->sadb_comb_soft_usetime = 28800; /* 8 hours */
comb->sadb_comb_hard_usetime = comb->sadb_comb_hard_usetime * 80 / 100;
}
* XXX no idea if the user wants ESP authentication or not
*/
static struct mbuf *
-key_getcomb_esp()
+key_getcomb_esp(void)
{
struct sadb_comb *comb;
const struct esp_algorithm *algo;
struct mbuf *result = NULL, *m, *n;
- int encmin;
- int i, off, o;
+ u_int16_t encmin;
+ int off, o;
int totlen;
+ u_int8_t i;
const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
m = NULL;
for (i = 1; i <= SADB_EALG_MAX; i++) {
algo = esp_algorithm_lookup(i);
- if (!algo)
+ if (!algo) {
continue;
+ }
- if (algo->keymax < ipsec_esp_keymin)
+ if (algo->keymax < ipsec_esp_keymin) {
continue;
- if (algo->keymin < ipsec_esp_keymin)
- encmin = ipsec_esp_keymin;
- else
+ }
+ if (algo->keymin < ipsec_esp_keymin) {
+ encmin = (u_int16_t)ipsec_esp_keymin;
+ } else {
encmin = algo->keymin;
+ }
- if (ipsec_esp_auth)
+ if (ipsec_esp_auth) {
m = key_getcomb_ah();
- else {
+ } else {
#if DIAGNOSTIC
- if (l > MLEN)
+ if (l > MLEN) {
panic("assumption failed in key_getcomb_esp");
+ }
#endif
- MGET(m, M_DONTWAIT, MT_DATA);
+ MGET(m, M_WAITOK, MT_DATA);
if (m) {
M_ALIGN(m, l);
m->m_len = l;
bzero(mtod(m, caddr_t), m->m_len);
}
}
- if (!m)
+ if (!m) {
goto fail;
+ }
totlen = 0;
- for (n = m; n; n = n->m_next)
+ for (n = m; n; n = n->m_next) {
totlen += n->m_len;
+ }
#if DIAGNOSTIC
- if (totlen % l)
+ if (totlen % l) {
panic("assumption failed in key_getcomb_esp");
+ }
#endif
for (off = 0; off < totlen; off += l) {
/* m is already freed */
goto fail;
}
- comb = (struct sadb_comb *)(mtod(n, caddr_t) + o);
+ comb = (struct sadb_comb *)
+ (void *)(mtod(n, caddr_t) + o);
bzero(comb, sizeof(*comb));
key_getcomb_setlifetime(comb);
comb->sadb_comb_encrypt = i;
comb->sadb_comb_encrypt_maxbits = algo->keymax;
}
- if (!result)
+ if (!result) {
result = m;
- else
+ } else {
m_cat(result, m);
+ }
}
return result;
- fail:
- if (result)
+fail:
+ if (result) {
m_freem(result);
+ }
return NULL;
}
#endif
* XXX reorder combinations by preference
*/
static struct mbuf *
-key_getcomb_ah()
+key_getcomb_ah(void)
{
struct sadb_comb *comb;
const struct ah_algorithm *algo;
struct mbuf *m;
- int min;
- int i;
+ u_int16_t keymin;
+ u_int8_t i;
const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
m = NULL;
for (i = 1; i <= SADB_AALG_MAX; i++) {
#if 1
/* we prefer HMAC algorithms, not old algorithms */
- if (i != SADB_AALG_SHA1HMAC && i != SADB_AALG_MD5HMAC)
+ if (i != SADB_AALG_SHA1HMAC && i != SADB_AALG_MD5HMAC) {
continue;
+ }
#endif
algo = ah_algorithm_lookup(i);
- if (!algo)
+ if (!algo) {
continue;
+ }
- if (algo->keymax < ipsec_ah_keymin)
+ if (algo->keymax < ipsec_ah_keymin) {
continue;
- if (algo->keymin < ipsec_ah_keymin)
- min = ipsec_ah_keymin;
- else
- min = algo->keymin;
+ }
+ if (algo->keymin < ipsec_ah_keymin) {
+ keymin = (u_int16_t)ipsec_ah_keymin;
+ } else {
+ keymin = algo->keymin;
+ }
if (!m) {
#if DIAGNOSTIC
- if (l > MLEN)
+ if (l > MLEN) {
panic("assumption failed in key_getcomb_ah");
+ }
#endif
- MGET(m, M_DONTWAIT, MT_DATA);
+ MGET(m, M_WAITOK, MT_DATA);
if (m) {
M_ALIGN(m, l);
m->m_len = l;
m->m_next = NULL;
}
- } else
- M_PREPEND(m, l, M_DONTWAIT);
- if (!m)
+ } else {
+ M_PREPEND(m, l, M_WAITOK, 1);
+ }
+ if (!m) {
return NULL;
+ }
comb = mtod(m, struct sadb_comb *);
bzero(comb, sizeof(*comb));
key_getcomb_setlifetime(comb);
comb->sadb_comb_auth = i;
- comb->sadb_comb_auth_minbits = min;
+ comb->sadb_comb_auth_minbits = keymin;
comb->sadb_comb_auth_maxbits = algo->keymax;
}
return m;
}
-/*
- * not really an official behavior. discussed in pf_key@inner.net in Sep2000.
- * XXX reorder combinations by preference
- */
-static struct mbuf *
-key_getcomb_ipcomp()
-{
- struct sadb_comb *comb;
- const struct ipcomp_algorithm *algo;
- struct mbuf *m;
- int i;
- const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb));
-
- m = NULL;
- for (i = 1; i <= SADB_X_CALG_MAX; i++) {
- algo = ipcomp_algorithm_lookup(i);
- if (!algo)
- continue;
-
- if (!m) {
-#if DIAGNOSTIC
- if (l > MLEN)
- panic("assumption failed in key_getcomb_ipcomp");
-#endif
- MGET(m, M_DONTWAIT, MT_DATA);
- if (m) {
- M_ALIGN(m, l);
- m->m_len = l;
- m->m_next = NULL;
- }
- } else
- M_PREPEND(m, l, M_DONTWAIT);
- if (!m)
- return NULL;
-
- comb = mtod(m, struct sadb_comb *);
- bzero(comb, sizeof(*comb));
- key_getcomb_setlifetime(comb);
- comb->sadb_comb_encrypt = i;
- /* what should we set into sadb_comb_*_{min,max}bits? */
- }
-
- return m;
-}
-
/*
* XXX no way to pass mode (transport/tunnel) to userland
* XXX replay checking?
* XXX sysctl interface to ipsec_{ah,esp}_keymin
*/
static struct mbuf *
-key_getprop(saidx)
- const struct secasindex *saidx;
+key_getprop(
+ const struct secasindex *saidx)
{
struct sadb_prop *prop;
struct mbuf *m, *n;
const int l = PFKEY_ALIGN8(sizeof(struct sadb_prop));
int totlen;
- switch (saidx->proto) {
+ switch (saidx->proto) {
#if IPSEC_ESP
case IPPROTO_ESP:
m = key_getcomb_esp();
case IPPROTO_AH:
m = key_getcomb_ah();
break;
- case IPPROTO_IPCOMP:
- m = key_getcomb_ipcomp();
- break;
default:
return NULL;
}
- if (!m)
+ if (!m) {
return NULL;
- M_PREPEND(m, l, M_DONTWAIT);
- if (!m)
+ }
+ M_PREPEND(m, l, M_WAITOK, 1);
+ if (!m) {
return NULL;
+ }
totlen = 0;
- for (n = m; n; n = n->m_next)
+ for (n = m; n; n = n->m_next) {
totlen += n->m_len;
+ }
prop = mtod(m, struct sadb_prop *);
bzero(prop, sizeof(*prop));
- prop->sadb_prop_len = PFKEY_UNIT64(totlen);
+ VERIFY(totlen <= UINT16_MAX);
+ prop->sadb_prop_len = (u_int16_t)PFKEY_UNIT64(totlen);
prop->sadb_prop_exttype = SADB_EXT_PROPOSAL;
- prop->sadb_prop_replay = 32; /* XXX */
+ prop->sadb_prop_replay = 32; /* XXX */
return m;
}
*
* XXX x_policy is outside of RFC2367 (KAME extension).
* XXX sensitivity is not supported.
- * XXX for ipcomp, RFC2367 does not define how to fill in proposal.
- * see comment for key_getcomb_ipcomp().
*
* OUT:
* 0 : succeed
* others: error number
*/
static int
-key_acquire(saidx, sp)
- struct secasindex *saidx;
- struct secpolicy *sp;
+key_acquire(
+ struct secasindex *saidx,
+ struct secpolicy *sp)
{
struct mbuf *result = NULL, *m;
#ifndef IPSEC_NONBLOCK_ACQUIRE
int error = -1;
u_int32_t seq;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (saidx == NULL)
+ if (saidx == NULL) {
panic("key_acquire: NULL pointer is passed.\n");
- if ((satype = key_proto2satype(saidx->proto)) == 0)
+ }
+ if ((satype = key_proto2satype(saidx->proto)) == 0) {
panic("key_acquire: invalid proto is passed.\n");
+ }
#ifndef IPSEC_NONBLOCK_ACQUIRE
/*
* managed with ACQUIRING list.
*/
/* get a entry to check whether sending message or not. */
+ lck_mtx_lock(sadb_mutex);
if ((newacq = key_getacq(saidx)) != NULL) {
if (key_blockacq_count < newacq->count) {
/* reset counter and do send message. */
} else {
/* increment counter and do nothing. */
newacq->count++;
+ lck_mtx_unlock(sadb_mutex);
return 0;
}
} else {
/* make new entry for blocking to send SADB_ACQUIRE. */
- if ((newacq = key_newacq(saidx)) == NULL)
+ if ((newacq = key_newacq(saidx)) == NULL) {
+ lck_mtx_unlock(sadb_mutex);
return ENOBUFS;
+ }
/* add to acqtree */
LIST_INSERT_HEAD(&acqtree, newacq, chain);
+ key_start_timehandler();
}
-#endif
-
-
-#ifndef IPSEC_NONBLOCK_ACQUIRE
seq = newacq->seq;
+ lck_mtx_unlock(sadb_mutex);
+
#else
seq = (acq_seq = (acq_seq == ~0 ? 1 : ++acq_seq));
#endif
/* set sadb_x_policy */
if (sp) {
- m = key_setsadbxpolicy(sp->policy, sp->spidx.dir, sp->id);
+ m = key_setsadbxpolicy((u_int16_t)sp->policy, sp->spidx.dir, sp->id);
if (!m) {
error = ENOBUFS;
goto fail;
m_cat(result, m);
}
- /* XXX identity (optional) */
-#if 0
- if (idexttype && fqdn) {
- /* create identity extension (FQDN) */
- struct sadb_ident *id;
- int fqdnlen;
-
- fqdnlen = strlen(fqdn) + 1; /* +1 for terminating-NUL */
- id = (struct sadb_ident *)p;
- bzero(id, sizeof(*id) + PFKEY_ALIGN8(fqdnlen));
- id->sadb_ident_len = PFKEY_UNIT64(sizeof(*id) + PFKEY_ALIGN8(fqdnlen));
- id->sadb_ident_exttype = idexttype;
- id->sadb_ident_type = SADB_IDENTTYPE_FQDN;
- bcopy(fqdn, id + 1, fqdnlen);
- p += sizeof(struct sadb_ident) + PFKEY_ALIGN8(fqdnlen);
- }
-
- if (idexttype) {
- /* create identity extension (USERFQDN) */
- struct sadb_ident *id;
- int userfqdnlen;
-
- if (userfqdn) {
- /* +1 for terminating-NUL */
- userfqdnlen = strlen(userfqdn) + 1;
- } else
- userfqdnlen = 0;
- id = (struct sadb_ident *)p;
- bzero(id, sizeof(*id) + PFKEY_ALIGN8(userfqdnlen));
- id->sadb_ident_len = PFKEY_UNIT64(sizeof(*id) + PFKEY_ALIGN8(userfqdnlen));
- id->sadb_ident_exttype = idexttype;
- id->sadb_ident_type = SADB_IDENTTYPE_USERFQDN;
- /* XXX is it correct? */
- if (curproc && curproc->p_cred)
- id->sadb_ident_id = curproc->p_cred->p_ruid;
- if (userfqdn && userfqdnlen)
- bcopy(userfqdn, id + 1, userfqdnlen);
- p += sizeof(struct sadb_ident) + PFKEY_ALIGN8(userfqdnlen);
- }
-#endif
-
/* XXX sensitivity (optional) */
/* create proposal/combination extension */
m = key_getprop(saidx);
-#if 0
- /*
- * spec conformant: always attach proposal/combination extension,
- * the problem is that we have no way to attach it for ipcomp,
- * due to the way sadb_comb is declared in RFC2367.
- */
- if (!m) {
- error = ENOBUFS;
- goto fail;
- }
- m_cat(result, m);
-#else
/*
* outside of spec; make proposal/combination extension optional.
*/
- if (m)
+ if (m) {
m_cat(result, m);
-#endif
+ }
if ((result->m_flags & M_PKTHDR) == 0) {
error = EINVAL;
}
result->m_pkthdr.len = 0;
- for (m = result; m; m = m->m_next)
+ for (m = result; m; m = m->m_next) {
result->m_pkthdr.len += m->m_len;
+ }
+ VERIFY(PFKEY_UNIT64(result->m_pkthdr.len) <= UINT16_MAX);
mtod(result, struct sadb_msg *)->sadb_msg_len =
- PFKEY_UNIT64(result->m_pkthdr.len);
+ (u_int16_t)PFKEY_UNIT64(result->m_pkthdr.len);
return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
- fail:
- if (result)
+fail:
+ if (result) {
m_freem(result);
+ }
return error;
}
#ifndef IPSEC_NONBLOCK_ACQUIRE
static struct secacq *
-key_newacq(saidx)
- struct secasindex *saidx;
+key_newacq(
+ struct secasindex *saidx)
{
struct secacq *newacq;
struct timeval tv;
/* get new entry */
- KMALLOC(newacq, struct secacq *, sizeof(struct secacq));
+ KMALLOC_NOWAIT(newacq, struct secacq *, sizeof(struct secacq));
if (newacq == NULL) {
- ipseclog((LOG_DEBUG, "key_newacq: No more memory.\n"));
- return NULL;
+ lck_mtx_unlock(sadb_mutex);
+ KMALLOC_WAIT(newacq, struct secacq *, sizeof(struct secacq));
+ lck_mtx_lock(sadb_mutex);
+ if (newacq == NULL) {
+ ipseclog((LOG_DEBUG, "key_newacq: No more memory.\n"));
+ return NULL;
+ }
}
bzero(newacq, sizeof(*newacq));
}
static struct secacq *
-key_getacq(saidx)
- struct secasindex *saidx;
+key_getacq(
+ struct secasindex *saidx)
{
struct secacq *acq;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
LIST_FOREACH(acq, &acqtree, chain) {
- if (key_cmpsaidx(saidx, &acq->saidx, CMP_EXACTLY))
+ if (key_cmpsaidx(saidx, &acq->saidx, CMP_EXACTLY)) {
return acq;
+ }
}
return NULL;
}
static struct secacq *
-key_getacqbyseq(seq)
- u_int32_t seq;
+key_getacqbyseq(
+ u_int32_t seq)
{
struct secacq *acq;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
LIST_FOREACH(acq, &acqtree, chain) {
- if (acq->seq == seq)
+ if (acq->seq == seq) {
return acq;
+ }
}
return NULL;
#endif
static struct secspacq *
-key_newspacq(spidx)
- struct secpolicyindex *spidx;
+key_newspacq(
+ struct secpolicyindex *spidx)
{
struct secspacq *acq;
struct timeval tv;
/* get new entry */
- KMALLOC(acq, struct secspacq *, sizeof(struct secspacq));
+ KMALLOC_NOWAIT(acq, struct secspacq *, sizeof(struct secspacq));
if (acq == NULL) {
- ipseclog((LOG_DEBUG, "key_newspacq: No more memory.\n"));
- return NULL;
+ lck_mtx_unlock(sadb_mutex);
+ KMALLOC_WAIT(acq, struct secspacq *, sizeof(struct secspacq));
+ lck_mtx_lock(sadb_mutex);
+ if (acq == NULL) {
+ ipseclog((LOG_DEBUG, "key_newspacq: No more memory.\n"));
+ return NULL;
+ }
}
bzero(acq, sizeof(*acq));
}
static struct secspacq *
-key_getspacq(spidx)
- struct secpolicyindex *spidx;
+key_getspacq(
+ struct secpolicyindex *spidx)
{
struct secspacq *acq;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
LIST_FOREACH(acq, &spacqtree, chain) {
- if (key_cmpspidx_exactly(spidx, &acq->spidx))
+ if (key_cmpspidx_exactly(spidx, &acq->spidx)) {
return acq;
+ }
}
return NULL;
* m will always be freed.
*/
static int
-key_acquire2(so, m, mhp)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_acquire2(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
const struct sadb_address *src0, *dst0;
+ ifnet_t ipsec_if = NULL;
struct secasindex saidx;
struct secashead *sah;
u_int16_t proto;
int error;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
/* sanity check */
- if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_acquire2: NULL pointer is passed.\n");
+ }
/*
* Error message from KMd.
* message is equal to the size of sadb_msg structure.
* We do not raise error even if error occurred in this function.
*/
+ lck_mtx_lock(sadb_mutex);
+
if (mhp->msg->sadb_msg_len == PFKEY_UNIT64(sizeof(struct sadb_msg))) {
#ifndef IPSEC_NONBLOCK_ACQUIRE
struct secacq *acq;
/* check sequence number */
if (mhp->msg->sadb_msg_seq == 0) {
+ lck_mtx_unlock(sadb_mutex);
ipseclog((LOG_DEBUG, "key_acquire2: must specify sequence number.\n"));
m_freem(m);
return 0;
* the specified larval SA is already gone, or we got
* a bogus sequence number. we can silently ignore it.
*/
+ lck_mtx_unlock(sadb_mutex);
m_freem(m);
return 0;
}
acq->created = tv.tv_sec;
acq->count = 0;
#endif
+ lck_mtx_unlock(sadb_mutex);
m_freem(m);
return 0;
}
/* map satype to proto */
if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
+ lck_mtx_unlock(sadb_mutex);
ipseclog((LOG_DEBUG, "key_acquire2: invalid satype is passed.\n"));
return key_senderror(so, m, EINVAL);
}
mhp->ext[SADB_EXT_ADDRESS_DST] == NULL ||
mhp->ext[SADB_EXT_PROPOSAL] == NULL) {
/* error */
+ lck_mtx_unlock(sadb_mutex);
ipseclog((LOG_DEBUG, "key_acquire2: invalid message is passed.\n"));
return key_senderror(so, m, EINVAL);
}
mhp->extlen[SADB_EXT_ADDRESS_DST] < sizeof(struct sadb_address) ||
mhp->extlen[SADB_EXT_PROPOSAL] < sizeof(struct sadb_prop)) {
/* error */
+ lck_mtx_unlock(sadb_mutex);
ipseclog((LOG_DEBUG, "key_acquire2: invalid message is passed.\n"));
return key_senderror(so, m, EINVAL);
}
- src0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
- dst0 = (struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
+ src0 = (const struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_SRC];
+ dst0 = (const struct sadb_address *)mhp->ext[SADB_EXT_ADDRESS_DST];
+ ipsec_if = key_get_ipsec_if_from_message(mhp, SADB_X_EXT_IPSECIF);
+
+ u_int ipsec_if_index = 0;
+ if (ipsec_if != NULL) {
+ ipsec_if_index = ipsec_if->if_index;
+ ifnet_release(ipsec_if);
+ ipsec_if = NULL;
+ }
/* XXX boundary check against sa_len */
- KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, &saidx);
+ /* cast warnings */
+ KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, ipsec_if_index, &saidx);
/* get a SA index */
LIST_FOREACH(sah, &sahtree, chain) {
- if (sah->state == SADB_SASTATE_DEAD)
+ if (sah->state == SADB_SASTATE_DEAD) {
continue;
- if (key_cmpsaidx(&sah->saidx, &saidx, CMP_MODE_REQID))
+ }
+ if (key_cmpsaidx(&sah->saidx, &saidx, CMP_MODE | CMP_REQID)) {
break;
+ }
}
if (sah != NULL) {
+ lck_mtx_unlock(sadb_mutex);
ipseclog((LOG_DEBUG, "key_acquire2: a SA exists already.\n"));
return key_senderror(so, m, EEXIST);
}
-
+ lck_mtx_unlock(sadb_mutex);
error = key_acquire(&saidx, NULL);
if (error != 0) {
ipseclog((LOG_DEBUG, "key_acquire2: error %d returned "
- "from key_acquire.\n", mhp->msg->sadb_msg_errno));
+ "from key_acquire.\n", mhp->msg->sadb_msg_errno));
return key_senderror(so, m, error);
}
/*
* SADB_REGISTER processing.
- * If SATYPE_UNSPEC has been passed as satype, only return sabd_supported.
+ * If SATYPE_UNSPEC has been passed as satype, only return sadb_supported.
* receive
* <base>
* from the ikmpd, and register a socket to send PF_KEY messages,
* m will always be freed.
*/
static int
-key_register(so, m, mhp)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_register(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
struct secreg *reg, *newreg = 0;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
/* sanity check */
- if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_register: NULL pointer is passed.\n");
+ }
/* check for invalid register message */
- if (mhp->msg->sadb_msg_satype >= sizeof(regtree)/sizeof(regtree[0]))
+ if (mhp->msg->sadb_msg_satype >= sizeof(regtree) / sizeof(regtree[0])) {
return key_senderror(so, m, EINVAL);
+ }
- /* When SATYPE_UNSPEC is specified, only return sabd_supported. */
- if (mhp->msg->sadb_msg_satype == SADB_SATYPE_UNSPEC)
+ /* When SATYPE_UNSPEC is specified, only return sadb_supported. */
+ if (mhp->msg->sadb_msg_satype == SADB_SATYPE_UNSPEC) {
goto setmsg;
-
- /* check whether existing or not */
- LIST_FOREACH(reg, ®tree[mhp->msg->sadb_msg_satype], chain) {
- if (reg->so == so) {
- ipseclog((LOG_DEBUG, "key_register: socket exists already.\n"));
- return key_senderror(so, m, EEXIST);
- }
}
/* create regnode */
- KMALLOC(newreg, struct secreg *, sizeof(*newreg));
+ KMALLOC_WAIT(newreg, struct secreg *, sizeof(*newreg));
if (newreg == NULL) {
ipseclog((LOG_DEBUG, "key_register: No more memory.\n"));
return key_senderror(so, m, ENOBUFS);
}
bzero((caddr_t)newreg, sizeof(*newreg));
+ lck_mtx_lock(sadb_mutex);
+ /* check whether existing or not */
+ LIST_FOREACH(reg, ®tree[mhp->msg->sadb_msg_satype], chain) {
+ if (reg->so == so) {
+ lck_mtx_unlock(sadb_mutex);
+ ipseclog((LOG_DEBUG, "key_register: socket exists already.\n"));
+ KFREE(newreg);
+ return key_senderror(so, m, EEXIST);
+ }
+ }
+
socket_lock(so, 1);
newreg->so = so;
((struct keycb *)sotorawcb(so))->kp_registered++;
/* add regnode to regtree. */
LIST_INSERT_HEAD(®tree[mhp->msg->sadb_msg_satype], newreg, chain);
-
- setmsg:
- {
- struct mbuf *n;
- struct sadb_msg *newmsg;
- struct sadb_supported *sup;
- u_int len, alen, elen;
- int off;
- int i;
- struct sadb_alg *alg;
-
- /* create new sadb_msg to reply. */
- alen = 0;
- for (i = 1; i <= SADB_AALG_MAX; i++) {
- if (ah_algorithm_lookup(i))
- alen += sizeof(struct sadb_alg);
- }
- if (alen)
- alen += sizeof(struct sadb_supported);
- elen = 0;
+ lck_mtx_unlock(sadb_mutex);
+setmsg:
+ {
+ struct mbuf *n;
+ struct sadb_msg *newmsg;
+ struct sadb_supported *sup;
+ u_int16_t len, alen, elen;
+ int off;
+ u_int8_t i;
+ struct sadb_alg *alg;
+
+ /* create new sadb_msg to reply. */
+ alen = 0;
+ for (i = 1; i <= SADB_AALG_MAX; i++) {
+ if (ah_algorithm_lookup(i)) {
+ alen += sizeof(struct sadb_alg);
+ }
+ }
+ if (alen) {
+ alen += sizeof(struct sadb_supported);
+ }
+ elen = 0;
#if IPSEC_ESP
- for (i = 1; i <= SADB_EALG_MAX; i++) {
- if (esp_algorithm_lookup(i))
- elen += sizeof(struct sadb_alg);
- }
- if (elen)
- elen += sizeof(struct sadb_supported);
+ for (i = 1; i <= SADB_EALG_MAX; i++) {
+ if (esp_algorithm_lookup(i)) {
+ elen += sizeof(struct sadb_alg);
+ }
+ }
+ if (elen) {
+ elen += sizeof(struct sadb_supported);
+ }
#endif
- len = sizeof(struct sadb_msg) + alen + elen;
+ len = sizeof(struct sadb_msg) + alen + elen;
- if (len > MCLBYTES)
- return key_senderror(so, m, ENOBUFS);
-
- MGETHDR(n, M_DONTWAIT, MT_DATA);
- if (len > MHLEN) {
- MCLGET(n, M_DONTWAIT);
- if ((n->m_flags & M_EXT) == 0) {
- m_freem(n);
- n = NULL;
+ if (len > MCLBYTES) {
+ return key_senderror(so, m, ENOBUFS);
}
- }
- if (!n)
- return key_senderror(so, m, ENOBUFS);
-
- n->m_pkthdr.len = n->m_len = len;
- n->m_next = NULL;
- off = 0;
-
- m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
- newmsg = mtod(n, struct sadb_msg *);
- newmsg->sadb_msg_errno = 0;
- newmsg->sadb_msg_len = PFKEY_UNIT64(len);
- off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
-
- /* for authentication algorithm */
- if (alen) {
- sup = (struct sadb_supported *)(mtod(n, caddr_t) + off);
- sup->sadb_supported_len = PFKEY_UNIT64(alen);
- sup->sadb_supported_exttype = SADB_EXT_SUPPORTED_AUTH;
- off += PFKEY_ALIGN8(sizeof(*sup));
- for (i = 1; i <= SADB_AALG_MAX; i++) {
- const struct ah_algorithm *aalgo;
+ MGETHDR(n, M_WAITOK, MT_DATA);
+ if (n && len > MHLEN) {
+ MCLGET(n, M_WAITOK);
+ if ((n->m_flags & M_EXT) == 0) {
+ m_freem(n);
+ n = NULL;
+ }
+ }
+ if (!n) {
+ return key_senderror(so, m, ENOBUFS);
+ }
- aalgo = ah_algorithm_lookup(i);
- if (!aalgo)
- continue;
- alg = (struct sadb_alg *)(mtod(n, caddr_t) + off);
- alg->sadb_alg_id = i;
- alg->sadb_alg_ivlen = 0;
- alg->sadb_alg_minbits = aalgo->keymin;
- alg->sadb_alg_maxbits = aalgo->keymax;
- off += PFKEY_ALIGN8(sizeof(*alg));
+ n->m_pkthdr.len = n->m_len = len;
+ n->m_next = NULL;
+ off = 0;
+
+ m_copydata(m, 0, sizeof(struct sadb_msg), mtod(n, caddr_t) + off);
+ newmsg = mtod(n, struct sadb_msg *);
+ newmsg->sadb_msg_errno = 0;
+ VERIFY(PFKEY_UNIT64(len) <= UINT16_MAX);
+ newmsg->sadb_msg_len = (u_int16_t)PFKEY_UNIT64(len);
+ off += PFKEY_ALIGN8(sizeof(struct sadb_msg));
+
+ /* for authentication algorithm */
+ if (alen) {
+ sup = (struct sadb_supported *)(void *)(mtod(n, caddr_t) + off);
+ sup->sadb_supported_len = (u_int16_t)PFKEY_UNIT64(alen);
+ sup->sadb_supported_exttype = SADB_EXT_SUPPORTED_AUTH;
+ off += PFKEY_ALIGN8(sizeof(*sup));
+
+ for (i = 1; i <= SADB_AALG_MAX; i++) {
+ const struct ah_algorithm *aalgo;
+
+ aalgo = ah_algorithm_lookup(i);
+ if (!aalgo) {
+ continue;
+ }
+ alg = (struct sadb_alg *)
+ (void *)(mtod(n, caddr_t) + off);
+ alg->sadb_alg_id = i;
+ alg->sadb_alg_ivlen = 0;
+ alg->sadb_alg_minbits = aalgo->keymin;
+ alg->sadb_alg_maxbits = aalgo->keymax;
+ off += PFKEY_ALIGN8(sizeof(*alg));
+ }
}
- }
#if IPSEC_ESP
- /* for encryption algorithm */
- if (elen) {
- sup = (struct sadb_supported *)(mtod(n, caddr_t) + off);
- sup->sadb_supported_len = PFKEY_UNIT64(elen);
- sup->sadb_supported_exttype = SADB_EXT_SUPPORTED_ENCRYPT;
- off += PFKEY_ALIGN8(sizeof(*sup));
-
- for (i = 1; i <= SADB_EALG_MAX; i++) {
- const struct esp_algorithm *ealgo;
-
- ealgo = esp_algorithm_lookup(i);
- if (!ealgo)
- continue;
- alg = (struct sadb_alg *)(mtod(n, caddr_t) + off);
- alg->sadb_alg_id = i;
- if (ealgo && ealgo->ivlen) {
- /*
- * give NULL to get the value preferred by
- * algorithm XXX SADB_X_EXT_DERIV ?
- */
- alg->sadb_alg_ivlen =
- (*ealgo->ivlen)(ealgo, NULL);
- } else
- alg->sadb_alg_ivlen = 0;
- alg->sadb_alg_minbits = ealgo->keymin;
- alg->sadb_alg_maxbits = ealgo->keymax;
- off += PFKEY_ALIGN8(sizeof(struct sadb_alg));
+ /* for encryption algorithm */
+ if (elen) {
+ sup = (struct sadb_supported *)(void *)(mtod(n, caddr_t) + off);
+ sup->sadb_supported_len = PFKEY_UNIT64(elen);
+ sup->sadb_supported_exttype = SADB_EXT_SUPPORTED_ENCRYPT;
+ off += PFKEY_ALIGN8(sizeof(*sup));
+
+ for (i = 1; i <= SADB_EALG_MAX; i++) {
+ const struct esp_algorithm *ealgo;
+
+ ealgo = esp_algorithm_lookup(i);
+ if (!ealgo) {
+ continue;
+ }
+ alg = (struct sadb_alg *)
+ (void *)(mtod(n, caddr_t) + off);
+ alg->sadb_alg_id = i;
+ if (ealgo && ealgo->ivlen) {
+ /*
+ * give NULL to get the value preferred by
+ * algorithm XXX SADB_X_EXT_DERIV ?
+ */
+ VERIFY((*ealgo->ivlen)(ealgo, NULL) <= UINT8_MAX);
+ alg->sadb_alg_ivlen =
+ (u_int8_t)((*ealgo->ivlen)(ealgo, NULL));
+ } else {
+ alg->sadb_alg_ivlen = 0;
+ }
+ alg->sadb_alg_minbits = ealgo->keymin;
+ alg->sadb_alg_maxbits = ealgo->keymax;
+ off += PFKEY_ALIGN8(sizeof(struct sadb_alg));
+ }
}
- }
#endif
-#if DIGAGNOSTIC
- if (off != len)
- panic("length assumption failed in key_register");
+#if DIAGNOSTIC
+ if (off != len) {
+ panic("length assumption failed in key_register");
+ }
#endif
- m_freem(m);
- return key_sendup_mbuf(so, n, KEY_SENDUP_REGISTERED);
- }
+ m_freem(m);
+ return key_sendup_mbuf(so, n, KEY_SENDUP_REGISTERED);
+ }
+}
+
+static void
+key_delete_all_for_socket(struct socket *so)
+{
+ struct secashead *sah, *nextsah;
+ struct secasvar *sav, *nextsav;
+ u_int stateidx;
+ u_int state;
+
+ for (sah = LIST_FIRST(&sahtree);
+ sah != NULL;
+ sah = nextsah) {
+ nextsah = LIST_NEXT(sah, chain);
+ for (stateidx = 0; stateidx < _ARRAYLEN(saorder_state_alive); stateidx++) {
+ state = saorder_state_any[stateidx];
+ for (sav = LIST_FIRST(&sah->savtree[state]); sav != NULL; sav = nextsav) {
+ nextsav = LIST_NEXT(sav, chain);
+ if (sav->flags2 & SADB_X_EXT_SA2_DELETE_ON_DETACH &&
+ sav->so == so) {
+ key_sa_chgstate(sav, SADB_SASTATE_DEAD);
+ key_freesav(sav, KEY_SADB_LOCKED);
+ }
+ }
+ }
+ }
}
/*
* XXX: I want to do free a socket marked done SADB_RESIGER to socket.
*/
void
-key_freereg(so)
- struct socket *so;
+key_freereg(
+ struct socket *so)
{
struct secreg *reg;
int i;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
/* sanity check */
- if (so == NULL)
+ if (so == NULL) {
panic("key_freereg: NULL pointer is passed.\n");
+ }
/*
* check whether existing or not.
* check all type of SA, because there is a potential that
* one socket is registered to multiple type of SA.
*/
+ lck_mtx_lock(sadb_mutex);
+ key_delete_all_for_socket(so);
for (i = 0; i <= SADB_SATYPE_MAX; i++) {
LIST_FOREACH(reg, ®tree[i], chain) {
if (reg->so == so
- && __LIST_CHAINED(reg)) {
+ && __LIST_CHAINED(reg)) {
LIST_REMOVE(reg, chain);
KFREE(reg);
break;
}
}
}
-
+ lck_mtx_unlock(sadb_mutex);
return;
}
* others : error number
*/
static int
-key_expire(sav)
- struct secasvar *sav;
+key_expire(
+ struct secasvar *sav)
{
- int s;
- int satype;
+ u_int8_t satype;
struct mbuf *result = NULL, *m;
int len;
int error = -1;
struct sadb_lifetime *lt;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (sav == NULL)
+ if (sav == NULL) {
panic("key_expire: NULL pointer is passed.\n");
- if (sav->sah == NULL)
+ }
+ if (sav->sah == NULL) {
panic("key_expire: Why was SA index in SA NULL.\n");
- if ((satype = key_proto2satype(sav->sah->saidx.proto)) == 0)
+ }
+ if ((satype = key_proto2satype(sav->sah->saidx.proto)) == 0) {
panic("key_expire: invalid proto is passed.\n");
+ }
/* set msg header */
- m = key_setsadbmsg(SADB_EXPIRE, 0, satype, sav->seq, 0, sav->refcnt);
+ m = key_setsadbmsg(SADB_EXPIRE, 0, satype, sav->seq, 0, (u_int16_t)sav->refcnt);
if (!m) {
error = ENOBUFS;
goto fail;
/* create SA extension */
m = key_setsadbxsa2(sav->sah->saidx.mode,
- sav->replay ? sav->replay->count : 0,
- sav->sah->saidx.reqid);
+ sav->replay[0] ? sav->replay[0]->count : 0,
+ sav->sah->saidx.reqid,
+ sav->flags2);
if (!m) {
error = ENOBUFS;
goto fail;
/* create lifetime extension (current and soft) */
len = PFKEY_ALIGN8(sizeof(*lt)) * 2;
m = key_alloc_mbuf(len);
- if (!m || m->m_next) { /*XXX*/
- if (m)
+ if (!m || m->m_next) { /*XXX*/
+ if (m) {
m_freem(m);
+ }
error = ENOBUFS;
goto fail;
}
lt->sadb_lifetime_bytes = sav->lft_c->sadb_lifetime_bytes;
lt->sadb_lifetime_addtime = sav->lft_c->sadb_lifetime_addtime;
lt->sadb_lifetime_usetime = sav->lft_c->sadb_lifetime_usetime;
- lt = (struct sadb_lifetime *)(mtod(m, caddr_t) + len / 2);
+ lt = (struct sadb_lifetime *)(void *)(mtod(m, caddr_t) + len / 2);
bcopy(sav->lft_s, lt, sizeof(*lt));
m_cat(result, m);
}
result->m_pkthdr.len = 0;
- for (m = result; m; m = m->m_next)
+ for (m = result; m; m = m->m_next) {
result->m_pkthdr.len += m->m_len;
+ }
+ VERIFY(PFKEY_UNIT64(result->m_pkthdr.len) <= UINT16_MAX);
mtod(result, struct sadb_msg *)->sadb_msg_len =
- PFKEY_UNIT64(result->m_pkthdr.len);
+ (u_int16_t)PFKEY_UNIT64(result->m_pkthdr.len);
- splx(s);
return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
- fail:
- if (result)
+fail:
+ if (result) {
m_freem(result);
- splx(s);
+ }
return error;
}
* m will always be freed.
*/
static int
-key_flush(so, m, mhp)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_flush(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
struct sadb_msg *newmsg;
struct secashead *sah, *nextsah;
struct secasvar *sav, *nextsav;
u_int16_t proto;
- u_int8_t state;
+ u_int state;
u_int stateidx;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
/* sanity check */
- if (so == NULL || mhp == NULL || mhp->msg == NULL)
+ if (so == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_flush: NULL pointer is passed.\n");
+ }
/* map satype to proto */
if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
return key_senderror(so, m, EINVAL);
}
+ lck_mtx_lock(sadb_mutex);
+
/* no SATYPE specified, i.e. flushing all SA. */
for (sah = LIST_FIRST(&sahtree);
- sah != NULL;
- sah = nextsah) {
+ sah != NULL;
+ sah = nextsah) {
nextsah = LIST_NEXT(sah, chain);
if (mhp->msg->sadb_msg_satype != SADB_SATYPE_UNSPEC
- && proto != sah->saidx.proto)
+ && proto != sah->saidx.proto) {
continue;
+ }
for (stateidx = 0;
- stateidx < _ARRAYLEN(saorder_state_alive);
- stateidx++) {
+ stateidx < _ARRAYLEN(saorder_state_alive);
+ stateidx++) {
state = saorder_state_any[stateidx];
for (sav = LIST_FIRST(&sah->savtree[state]);
- sav != NULL;
- sav = nextsav) {
-
+ sav != NULL;
+ sav = nextsav) {
nextsav = LIST_NEXT(sav, chain);
key_sa_chgstate(sav, SADB_SASTATE_DEAD);
- key_freesav(sav);
+ key_freesav(sav, KEY_SADB_LOCKED);
}
}
sah->state = SADB_SASTATE_DEAD;
}
+ lck_mtx_unlock(sadb_mutex);
if (m->m_len < sizeof(struct sadb_msg) ||
sizeof(struct sadb_msg) > m->m_len + M_TRAILINGSPACE(m)) {
return key_senderror(so, m, ENOBUFS);
}
- if (m->m_next)
+ if (m->m_next) {
m_freem(m->m_next);
+ }
m->m_next = NULL;
m->m_pkthdr.len = m->m_len = sizeof(struct sadb_msg);
newmsg = mtod(m, struct sadb_msg *);
newmsg->sadb_msg_errno = 0;
- newmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len);
+ VERIFY(PFKEY_UNIT64(m->m_pkthdr.len) <= UINT16_MAX);
+ newmsg->sadb_msg_len = (uint16_t)PFKEY_UNIT64(m->m_pkthdr.len);
return key_sendup_mbuf(so, m, KEY_SENDUP_ALL);
}
*
* m will always be freed.
*/
+
+struct sav_dump_elem {
+ struct secasvar *sav;
+ u_int8_t satype;
+};
+
static int
-key_dump(so, m, mhp)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_dump(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
struct secashead *sah;
struct secasvar *sav;
+ struct sav_dump_elem *savbuf = NULL, *elem_ptr;
+ size_t total_req_size = 0;
+ u_int32_t bufcount = 0, cnt = 0, cnt2 = 0;
u_int16_t proto;
u_int stateidx;
u_int8_t satype;
- u_int8_t state;
- int cnt;
- struct sadb_msg *newmsg;
+ u_int state;
struct mbuf *n;
+ int error = 0;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_dump: NULL pointer is passed.\n");
+ }
/* map satype to proto */
if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) {
return key_senderror(so, m, EINVAL);
}
+ if ((bufcount = ipsec_sav_count) == 0) {
+ error = ENOENT;
+ goto end;
+ }
+
+ if (os_add_overflow(bufcount, 512, &bufcount)) {
+ ipseclog((LOG_DEBUG, "key_dump: bufcount overflow, ipsec sa count %u.\n", ipsec_sav_count));
+ bufcount = ipsec_sav_count;
+ }
+
+ if (os_mul_overflow(bufcount, sizeof(struct sav_dump_elem), &total_req_size)) {
+ panic("key_dump savbuf requested memory overflow %u\n", bufcount);
+ }
+
+ KMALLOC_WAIT(savbuf, struct sav_dump_elem*, total_req_size);
+ if (savbuf == NULL) {
+ ipseclog((LOG_DEBUG, "key_dump: No more memory.\n"));
+ error = ENOMEM;
+ goto end;
+ }
+
/* count sav entries to be sent to the userland. */
- cnt = 0;
+ lck_mtx_lock(sadb_mutex);
+ elem_ptr = savbuf;
LIST_FOREACH(sah, &sahtree, chain) {
if (mhp->msg->sadb_msg_satype != SADB_SATYPE_UNSPEC
- && proto != sah->saidx.proto)
+ && proto != sah->saidx.proto) {
continue;
+ }
+
+ /* map proto to satype */
+ if ((satype = key_proto2satype(sah->saidx.proto)) == 0) {
+ lck_mtx_unlock(sadb_mutex);
+ ipseclog((LOG_DEBUG, "key_dump: there was invalid proto in SAD.\n"));
+ error = EINVAL;
+ goto end;
+ }
for (stateidx = 0;
- stateidx < _ARRAYLEN(saorder_state_any);
- stateidx++) {
+ stateidx < _ARRAYLEN(saorder_state_any);
+ stateidx++) {
state = saorder_state_any[stateidx];
LIST_FOREACH(sav, &sah->savtree[state], chain) {
+ if (cnt == bufcount) {
+ break; /* out of buffer space */
+ }
+ elem_ptr->sav = sav;
+ elem_ptr->satype = satype;
+ sav->refcnt++;
+ elem_ptr++;
cnt++;
}
}
}
+ lck_mtx_unlock(sadb_mutex);
- if (cnt == 0)
- return key_senderror(so, m, ENOENT);
+ if (cnt == 0) {
+ error = ENOENT;
+ goto end;
+ }
/* send this to the userland, one at a time. */
- newmsg = NULL;
- LIST_FOREACH(sah, &sahtree, chain) {
- if (mhp->msg->sadb_msg_satype != SADB_SATYPE_UNSPEC
- && proto != sah->saidx.proto)
- continue;
+ elem_ptr = savbuf;
+ cnt2 = cnt;
+ while (cnt2) {
+ n = key_setdumpsa(elem_ptr->sav, SADB_DUMP, elem_ptr->satype,
+ --cnt2, mhp->msg->sadb_msg_pid);
- /* map proto to satype */
- if ((satype = key_proto2satype(sah->saidx.proto)) == 0) {
- ipseclog((LOG_DEBUG, "key_dump: there was invalid proto in SAD.\n"));
- return key_senderror(so, m, EINVAL);
+ if (!n) {
+ error = ENOBUFS;
+ goto end;
}
- for (stateidx = 0;
- stateidx < _ARRAYLEN(saorder_state_any);
- stateidx++) {
- state = saorder_state_any[stateidx];
- LIST_FOREACH(sav, &sah->savtree[state], chain) {
- n = key_setdumpsa(sav, SADB_DUMP, satype,
- --cnt, mhp->msg->sadb_msg_pid);
- if (!n)
- return key_senderror(so, m, ENOBUFS);
+ key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
+ elem_ptr++;
+ }
- key_sendup_mbuf(so, n, KEY_SENDUP_ONE);
+end:
+ if (savbuf) {
+ if (cnt) {
+ elem_ptr = savbuf;
+ lck_mtx_lock(sadb_mutex);
+ while (cnt--) {
+ key_freesav((elem_ptr++)->sav, KEY_SADB_LOCKED);
}
+ lck_mtx_unlock(sadb_mutex);
}
+ KFREE(savbuf);
+ }
+
+ if (error) {
+ return key_senderror(so, m, error);
}
m_freem(m);
* m will always be freed.
*/
static int
-key_promisc(so, m, mhp)
- struct socket *so;
- struct mbuf *m;
- const struct sadb_msghdr *mhp;
+key_promisc(
+ struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
{
int olen;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
/* sanity check */
- if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL)
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
panic("key_promisc: NULL pointer is passed.\n");
+ }
olen = PFKEY_UNUNIT64(mhp->msg->sadb_msg_len);
} else if (olen == sizeof(struct sadb_msg)) {
/* enable/disable promisc mode */
struct keycb *kp;
-
+
socket_lock(so, 1);
- if ((kp = (struct keycb *)sotorawcb(so)) == NULL)
+ if ((kp = (struct keycb *)sotorawcb(so)) == NULL) {
return key_senderror(so, m, EINVAL);
+ }
mhp->msg->sadb_msg_errno = 0;
switch (mhp->msg->sadb_msg_satype) {
case 0:
}
}
-static int (*key_typesw[])(struct socket *, struct mbuf *,
- const struct sadb_msghdr *) = {
- NULL, /* SADB_RESERVED */
- key_getspi, /* SADB_GETSPI */
- key_update, /* SADB_UPDATE */
- key_add, /* SADB_ADD */
- key_delete, /* SADB_DELETE */
- key_get, /* SADB_GET */
- key_acquire2, /* SADB_ACQUIRE */
- key_register, /* SADB_REGISTER */
- NULL, /* SADB_EXPIRE */
- key_flush, /* SADB_FLUSH */
- key_dump, /* SADB_DUMP */
- key_promisc, /* SADB_X_PROMISC */
- NULL, /* SADB_X_PCHANGE */
- key_spdadd, /* SADB_X_SPDUPDATE */
- key_spdadd, /* SADB_X_SPDADD */
- key_spddelete, /* SADB_X_SPDDELETE */
- key_spdget, /* SADB_X_SPDGET */
- NULL, /* SADB_X_SPDACQUIRE */
- key_spddump, /* SADB_X_SPDDUMP */
- key_spdflush, /* SADB_X_SPDFLUSH */
- key_spdadd, /* SADB_X_SPDSETIDX */
- NULL, /* SADB_X_SPDEXPIRE */
- key_spddelete2, /* SADB_X_SPDDELETE2 */
+static int(*const key_typesw[])(struct socket *, struct mbuf *,
+ const struct sadb_msghdr *) = {
+ NULL, /* SADB_RESERVED */
+ key_getspi, /* SADB_GETSPI */
+ key_update, /* SADB_UPDATE */
+ key_add, /* SADB_ADD */
+ key_delete, /* SADB_DELETE */
+ key_get, /* SADB_GET */
+ key_acquire2, /* SADB_ACQUIRE */
+ key_register, /* SADB_REGISTER */
+ NULL, /* SADB_EXPIRE */
+ key_flush, /* SADB_FLUSH */
+ key_dump, /* SADB_DUMP */
+ key_promisc, /* SADB_X_PROMISC */
+ NULL, /* SADB_X_PCHANGE */
+ key_spdadd, /* SADB_X_SPDUPDATE */
+ key_spdadd, /* SADB_X_SPDADD */
+ key_spddelete, /* SADB_X_SPDDELETE */
+ key_spdget, /* SADB_X_SPDGET */
+ NULL, /* SADB_X_SPDACQUIRE */
+ key_spddump, /* SADB_X_SPDDUMP */
+ key_spdflush, /* SADB_X_SPDFLUSH */
+ key_spdadd, /* SADB_X_SPDSETIDX */
+ NULL, /* SADB_X_SPDEXPIRE */
+ key_spddelete2, /* SADB_X_SPDDELETE2 */
+ key_getsastat, /* SADB_GETSASTAT */
+ key_spdenable, /* SADB_X_SPDENABLE */
+ key_spddisable, /* SADB_X_SPDDISABLE */
+ key_migrate, /* SADB_MIGRATE */
};
+static void
+bzero_mbuf(struct mbuf *m)
+{
+ struct mbuf *mptr = m;
+ struct sadb_msg *msg = NULL;
+ int offset = 0;
+
+ if (!mptr) {
+ return;
+ }
+
+ if (mptr->m_len >= sizeof(struct sadb_msg)) {
+ msg = mtod(mptr, struct sadb_msg *);
+ if (msg->sadb_msg_type != SADB_ADD &&
+ msg->sadb_msg_type != SADB_UPDATE) {
+ return;
+ }
+ offset = sizeof(struct sadb_msg);
+ }
+ bzero(mptr->m_data + offset, mptr->m_len - offset);
+ mptr = mptr->m_next;
+ while (mptr != NULL) {
+ bzero(mptr->m_data, mptr->m_len);
+ mptr = mptr->m_next;
+ }
+}
+
+static void
+bzero_keys(const struct sadb_msghdr *mh)
+{
+ int extlen = 0;
+ int offset = 0;
+
+ if (!mh) {
+ return;
+ }
+ offset = sizeof(struct sadb_key);
+
+ if (mh->ext[SADB_EXT_KEY_ENCRYPT]) {
+ struct sadb_key *key = (struct sadb_key*)mh->ext[SADB_EXT_KEY_ENCRYPT];
+ extlen = key->sadb_key_bits >> 3;
+
+ if (mh->extlen[SADB_EXT_KEY_ENCRYPT] >= offset + extlen) {
+ bzero((uint8_t *)mh->ext[SADB_EXT_KEY_ENCRYPT] + offset, extlen);
+ } else {
+ bzero(mh->ext[SADB_EXT_KEY_ENCRYPT], mh->extlen[SADB_EXT_KEY_ENCRYPT]);
+ }
+ }
+ if (mh->ext[SADB_EXT_KEY_AUTH]) {
+ struct sadb_key *key = (struct sadb_key*)mh->ext[SADB_EXT_KEY_AUTH];
+ extlen = key->sadb_key_bits >> 3;
+
+ if (mh->extlen[SADB_EXT_KEY_AUTH] >= offset + extlen) {
+ bzero((uint8_t *)mh->ext[SADB_EXT_KEY_AUTH] + offset, extlen);
+ } else {
+ bzero(mh->ext[SADB_EXT_KEY_AUTH], mh->extlen[SADB_EXT_KEY_AUTH]);
+ }
+ }
+}
+
+static int
+key_validate_address_pair(struct sadb_address *src0,
+ struct sadb_address *dst0)
+{
+ u_int plen = 0;
+
+ /* check upper layer protocol */
+ if (src0->sadb_address_proto != dst0->sadb_address_proto) {
+ ipseclog((LOG_DEBUG, "key_parse: upper layer protocol mismatched.\n"));
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invaddr);
+ return EINVAL;
+ }
+
+ /* check family */
+ if (PFKEY_ADDR_SADDR(src0)->sa_family !=
+ PFKEY_ADDR_SADDR(dst0)->sa_family) {
+ ipseclog((LOG_DEBUG, "key_parse: address family mismatched.\n"));
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invaddr);
+ return EINVAL;
+ }
+ if (PFKEY_ADDR_SADDR(src0)->sa_len !=
+ PFKEY_ADDR_SADDR(dst0)->sa_len) {
+ ipseclog((LOG_DEBUG,
+ "key_parse: address struct size mismatched.\n"));
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invaddr);
+ return EINVAL;
+ }
+
+ switch (PFKEY_ADDR_SADDR(src0)->sa_family) {
+ case AF_INET:
+ if (PFKEY_ADDR_SADDR(src0)->sa_len != sizeof(struct sockaddr_in)) {
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invaddr);
+ return EINVAL;
+ }
+ break;
+ case AF_INET6:
+ if (PFKEY_ADDR_SADDR(src0)->sa_len != sizeof(struct sockaddr_in6)) {
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invaddr);
+ return EINVAL;
+ }
+ break;
+ default:
+ ipseclog((LOG_DEBUG,
+ "key_parse: unsupported address family.\n"));
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invaddr);
+ return EAFNOSUPPORT;
+ }
+
+ switch (PFKEY_ADDR_SADDR(src0)->sa_family) {
+ case AF_INET:
+ plen = sizeof(struct in_addr) << 3;
+ break;
+ case AF_INET6:
+ plen = sizeof(struct in6_addr) << 3;
+ break;
+ default:
+ plen = 0; /*fool gcc*/
+ break;
+ }
+
+ /* check max prefix length */
+ if (src0->sadb_address_prefixlen > plen ||
+ dst0->sadb_address_prefixlen > plen) {
+ ipseclog((LOG_DEBUG,
+ "key_parse: illegal prefixlen.\n"));
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invaddr);
+ return EINVAL;
+ }
+
+ /*
+ * prefixlen == 0 is valid because there can be a case when
+ * all addresses are matched.
+ */
+ return 0;
+}
+
/*
* parse sadb_msg buffer to process PFKEYv2,
* and create a data to response if needed.
* length for buffer to send to user process.
*/
int
-key_parse(m, so)
- struct mbuf *m;
- struct socket *so;
+key_parse(
+ struct mbuf *m,
+ struct socket *so)
{
struct sadb_msg *msg;
struct sadb_msghdr mh;
u_int orglen;
int error;
int target;
+ Boolean keyAligned = FALSE;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
/* sanity check */
- if (m == NULL || so == NULL)
+ if (m == NULL || so == NULL) {
panic("key_parse: NULL pointer is passed.\n");
+ }
-#if 0 /*kdebug_sadb assumes msg in linear buffer*/
+#if 0 /*kdebug_sadb assumes msg in linear buffer*/
KEYDEBUG(KEYDEBUG_KEY_DUMP,
- ipseclog((LOG_DEBUG, "key_parse: passed sadb_msg\n"));
- kdebug_sadb(msg));
+ ipseclog((LOG_DEBUG, "key_parse: passed sadb_msg\n"));
+ kdebug_sadb(msg));
#endif
if (m->m_len < sizeof(struct sadb_msg)) {
m = m_pullup(m, sizeof(struct sadb_msg));
- if (!m)
+ if (!m) {
return ENOBUFS;
+ }
}
msg = mtod(m, struct sadb_msg *);
orglen = PFKEY_UNUNIT64(msg->sadb_msg_len);
target = KEY_SENDUP_ONE;
if ((m->m_flags & M_PKTHDR) == 0 ||
- m->m_pkthdr.len != m->m_pkthdr.len) {
+ m->m_pkthdr.len != orglen) {
ipseclog((LOG_DEBUG, "key_parse: invalid message length.\n"));
- pfkeystat.out_invlen++;
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invlen);
error = EINVAL;
goto senderror;
}
ipseclog((LOG_DEBUG,
"key_parse: PF_KEY version %u is mismatched.\n",
msg->sadb_msg_version));
- pfkeystat.out_invver++;
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invver);
error = EINVAL;
goto senderror;
}
if (msg->sadb_msg_type > SADB_MAX) {
ipseclog((LOG_DEBUG, "key_parse: invalid type %u is passed.\n",
msg->sadb_msg_type));
- pfkeystat.out_invmsgtype++;
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invmsgtype);
error = EINVAL;
goto senderror;
}
if (m->m_next) {
struct mbuf *n;
- MGETHDR(n, M_DONTWAIT, MT_DATA);
+ MGETHDR(n, M_WAITOK, MT_DATA);
if (n && m->m_pkthdr.len > MHLEN) {
- MCLGET(n, M_DONTWAIT);
+ MCLGET(n, M_WAITOK);
if ((n->m_flags & M_EXT) == 0) {
m_free(n);
n = NULL;
}
}
if (!n) {
+ bzero_mbuf(m);
m_freem(m);
return ENOBUFS;
}
m_copydata(m, 0, m->m_pkthdr.len, mtod(n, caddr_t));
n->m_pkthdr.len = n->m_len = m->m_pkthdr.len;
n->m_next = NULL;
+ bzero_mbuf(m);
m_freem(m);
m = n;
}
/* align the mbuf chain so that extensions are in contiguous region. */
error = key_align(m, &mh);
- if (error)
+ if (error) {
return error;
+ }
- if (m->m_next) { /*XXX*/
+ if (m->m_next) { /*XXX*/
+ bzero_mbuf(m);
m_freem(m);
return ENOBUFS;
}
+ keyAligned = TRUE;
msg = mh.msg;
/* check SA type */
case SADB_EXPIRE:
ipseclog((LOG_DEBUG, "key_parse: must specify satype "
"when msg type=%u.\n", msg->sadb_msg_type));
- pfkeystat.out_invsatype++;
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invsatype);
error = EINVAL;
goto senderror;
}
break;
case SADB_SATYPE_AH:
case SADB_SATYPE_ESP:
- case SADB_X_SATYPE_IPCOMP:
switch (msg->sadb_msg_type) {
case SADB_X_SPDADD:
case SADB_X_SPDDELETE:
case SADB_X_SPDSETIDX:
case SADB_X_SPDUPDATE:
case SADB_X_SPDDELETE2:
+ case SADB_X_SPDENABLE:
+ case SADB_X_SPDDISABLE:
ipseclog((LOG_DEBUG, "key_parse: illegal satype=%u\n",
msg->sadb_msg_type));
- pfkeystat.out_invsatype++;
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invsatype);
error = EINVAL;
goto senderror;
}
case SADB_SATYPE_MIP:
ipseclog((LOG_DEBUG, "key_parse: type %u isn't supported.\n",
msg->sadb_msg_satype));
- pfkeystat.out_invsatype++;
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invsatype);
error = EOPNOTSUPP;
goto senderror;
- case 1: /* XXX: What does it do? */
- if (msg->sadb_msg_type == SADB_X_PROMISC)
+ case 1: /* XXX: What does it do? */
+ if (msg->sadb_msg_type == SADB_X_PROMISC) {
break;
- /*FALLTHROUGH*/
+ }
+ OS_FALLTHROUGH;
default:
ipseclog((LOG_DEBUG, "key_parse: invalid type %u is passed.\n",
msg->sadb_msg_satype));
- pfkeystat.out_invsatype++;
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invsatype);
error = EINVAL;
goto senderror;
}
- /* check field of upper layer protocol and address family */
- if (mh.ext[SADB_EXT_ADDRESS_SRC] != NULL
- && mh.ext[SADB_EXT_ADDRESS_DST] != NULL) {
- struct sadb_address *src0, *dst0;
- u_int plen;
-
- src0 = (struct sadb_address *)(mh.ext[SADB_EXT_ADDRESS_SRC]);
- dst0 = (struct sadb_address *)(mh.ext[SADB_EXT_ADDRESS_DST]);
-
- /* check upper layer protocol */
- if (src0->sadb_address_proto != dst0->sadb_address_proto) {
- ipseclog((LOG_DEBUG, "key_parse: upper layer protocol mismatched.\n"));
- pfkeystat.out_invaddr++;
- error = EINVAL;
+ /* Validate address fields for matching families, lengths, etc. */
+ void *src0 = mh.ext[SADB_EXT_ADDRESS_SRC];
+ void *dst0 = mh.ext[SADB_EXT_ADDRESS_DST];
+ if (mh.ext[SADB_X_EXT_ADDR_RANGE_SRC_START] != NULL &&
+ mh.ext[SADB_X_EXT_ADDR_RANGE_SRC_END] != NULL) {
+ error = key_validate_address_pair((struct sadb_address *)(mh.ext[SADB_X_EXT_ADDR_RANGE_SRC_START]),
+ (struct sadb_address *)(mh.ext[SADB_X_EXT_ADDR_RANGE_SRC_END]));
+ if (error != 0) {
goto senderror;
}
- /* check family */
- if (PFKEY_ADDR_SADDR(src0)->sa_family !=
- PFKEY_ADDR_SADDR(dst0)->sa_family) {
- ipseclog((LOG_DEBUG, "key_parse: address family mismatched.\n"));
- pfkeystat.out_invaddr++;
- error = EINVAL;
- goto senderror;
+ if (src0 == NULL) {
+ src0 = mh.ext[SADB_X_EXT_ADDR_RANGE_SRC_START];
}
- if (PFKEY_ADDR_SADDR(src0)->sa_len !=
- PFKEY_ADDR_SADDR(dst0)->sa_len) {
- ipseclog((LOG_DEBUG,
- "key_parse: address struct size mismatched.\n"));
- pfkeystat.out_invaddr++;
- error = EINVAL;
+ }
+ if (mh.ext[SADB_X_EXT_ADDR_RANGE_DST_START] != NULL &&
+ mh.ext[SADB_X_EXT_ADDR_RANGE_DST_END] != NULL) {
+ error = key_validate_address_pair((struct sadb_address *)(mh.ext[SADB_X_EXT_ADDR_RANGE_DST_START]),
+ (struct sadb_address *)(mh.ext[SADB_X_EXT_ADDR_RANGE_DST_END]));
+ if (error != 0) {
goto senderror;
}
- switch (PFKEY_ADDR_SADDR(src0)->sa_family) {
- case AF_INET:
- if (PFKEY_ADDR_SADDR(src0)->sa_len !=
- sizeof(struct sockaddr_in)) {
- pfkeystat.out_invaddr++;
- error = EINVAL;
- goto senderror;
- }
- break;
- case AF_INET6:
- if (PFKEY_ADDR_SADDR(src0)->sa_len !=
- sizeof(struct sockaddr_in6)) {
- pfkeystat.out_invaddr++;
- error = EINVAL;
- goto senderror;
- }
- break;
- default:
- ipseclog((LOG_DEBUG,
- "key_parse: unsupported address family.\n"));
- pfkeystat.out_invaddr++;
- error = EAFNOSUPPORT;
- goto senderror;
+ if (dst0 == NULL) {
+ dst0 = mh.ext[SADB_X_EXT_ADDR_RANGE_DST_START];
}
-
- switch (PFKEY_ADDR_SADDR(src0)->sa_family) {
- case AF_INET:
- plen = sizeof(struct in_addr) << 3;
- break;
- case AF_INET6:
- plen = sizeof(struct in6_addr) << 3;
- break;
- default:
- plen = 0; /*fool gcc*/
- break;
+ }
+ if (src0 != NULL && dst0 != NULL) {
+ error = key_validate_address_pair((struct sadb_address *)(src0),
+ (struct sadb_address *)(dst0));
+ if (error != 0) {
+ goto senderror;
}
+ }
- /* check max prefix length */
- if (src0->sadb_address_prefixlen > plen ||
- dst0->sadb_address_prefixlen > plen) {
- ipseclog((LOG_DEBUG,
- "key_parse: illegal prefixlen.\n"));
- pfkeystat.out_invaddr++;
- error = EINVAL;
+ void *migrate_src = mh.ext[SADB_EXT_MIGRATE_ADDRESS_SRC];
+ void *migrate_dst = mh.ext[SADB_EXT_MIGRATE_ADDRESS_DST];
+ if (migrate_src != NULL && migrate_dst != NULL) {
+ error = key_validate_address_pair((struct sadb_address *)(migrate_src),
+ (struct sadb_address *)(migrate_dst));
+ if (error != 0) {
goto senderror;
}
-
- /*
- * prefixlen == 0 is valid because there can be a case when
- * all addresses are matched.
- */
}
- if (msg->sadb_msg_type >= sizeof(key_typesw)/sizeof(key_typesw[0]) ||
+ if (msg->sadb_msg_type >= sizeof(key_typesw) / sizeof(key_typesw[0]) ||
key_typesw[msg->sadb_msg_type] == NULL) {
- pfkeystat.out_invmsgtype++;
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invmsgtype);
error = EINVAL;
goto senderror;
}
- return (*key_typesw[msg->sadb_msg_type])(so, m, &mh);
+ error = (*key_typesw[msg->sadb_msg_type])(so, m, &mh);
+
+ return error;
senderror:
- msg->sadb_msg_errno = error;
+ if (keyAligned) {
+ bzero_keys(&mh);
+ } else {
+ bzero_mbuf(m);
+ }
+ msg->sadb_msg_errno = (u_int8_t)error;
return key_sendup_mbuf(so, m, target);
}
static int
-key_senderror(so, m, code)
- struct socket *so;
- struct mbuf *m;
- int code;
+key_senderror(
+ struct socket *so,
+ struct mbuf *m,
+ int code)
{
struct sadb_msg *msg;
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
- if (m->m_len < sizeof(struct sadb_msg))
+ if (m->m_len < sizeof(struct sadb_msg)) {
panic("invalid mbuf passed to key_senderror");
+ }
msg = mtod(m, struct sadb_msg *);
- msg->sadb_msg_errno = code;
+ msg->sadb_msg_errno = (u_int8_t)code;
return key_sendup_mbuf(so, m, KEY_SENDUP_ONE);
}
* XXX larger-than-MCLBYTES extension?
*/
static int
-key_align(m, mhp)
- struct mbuf *m;
- struct sadb_msghdr *mhp;
+key_align(
+ struct mbuf *m,
+ struct sadb_msghdr *mhp)
{
struct mbuf *n;
struct sadb_ext *ext;
- size_t off, end;
- int extlen;
+ size_t end;
+ int off, extlen;
int toff;
/* sanity check */
- if (m == NULL || mhp == NULL)
+ if (m == NULL || mhp == NULL) {
panic("key_align: NULL pointer is passed.\n");
- if (m->m_len < sizeof(struct sadb_msg))
+ }
+ if (m->m_len < sizeof(struct sadb_msg)) {
panic("invalid mbuf passed to key_align");
+ }
/* initialize */
bzero(mhp, sizeof(*mhp));
mhp->msg = mtod(m, struct sadb_msg *);
- mhp->ext[0] = (struct sadb_ext *)mhp->msg; /*XXX backward compat */
+ mhp->ext[0] = (struct sadb_ext *)mhp->msg; /*XXX backward compat */
end = PFKEY_UNUNIT64(mhp->msg->sadb_msg_len);
- extlen = end; /*just in case extlen is not updated*/
+ extlen = (int)end; /*just in case extlen is not updated*/
for (off = sizeof(struct sadb_msg); off < end; off += extlen) {
n = m_pulldown(m, off, sizeof(struct sadb_ext), &toff);
if (!n) {
/* m is already freed */
return ENOBUFS;
}
- ext = (struct sadb_ext *)(mtod(n, caddr_t) + toff);
+ ext = (struct sadb_ext *)(void *)(mtod(n, caddr_t) + toff);
/* set pointer */
switch (ext->sadb_ext_type) {
case SADB_EXT_SPIRANGE:
case SADB_X_EXT_POLICY:
case SADB_X_EXT_SA2:
+ case SADB_EXT_SESSION_ID:
+ case SADB_EXT_SASTAT:
+ case SADB_X_EXT_IPSECIF:
+ case SADB_X_EXT_ADDR_RANGE_SRC_START:
+ case SADB_X_EXT_ADDR_RANGE_SRC_END:
+ case SADB_X_EXT_ADDR_RANGE_DST_START:
+ case SADB_X_EXT_ADDR_RANGE_DST_END:
+ case SADB_EXT_MIGRATE_ADDRESS_SRC:
+ case SADB_EXT_MIGRATE_ADDRESS_DST:
+ case SADB_X_EXT_MIGRATE_IPSECIF:
/* duplicate check */
/*
* XXX Are there duplication payloads of either
ipseclog((LOG_DEBUG,
"key_align: duplicate ext_type %u "
"is passed.\n", ext->sadb_ext_type));
+ bzero_mbuf(m);
m_freem(m);
- pfkeystat.out_dupext++;
+ PFKEY_STAT_INCREMENT(pfkeystat.out_dupext);
return EINVAL;
}
break;
ipseclog((LOG_DEBUG,
"key_align: invalid ext_type %u is passed.\n",
ext->sadb_ext_type));
+ bzero_mbuf(m);
m_freem(m);
- pfkeystat.out_invexttype++;
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invexttype);
return EINVAL;
}
extlen = PFKEY_UNUNIT64(ext->sadb_ext_len);
+ if (off + extlen > end) {
+ ipseclog((LOG_DEBUG,
+ "key_align: ext type %u invalid ext length %d "
+ "offset %d sadb message total len %zu is passed.\n",
+ ext->sadb_ext_type, extlen, off, end));
+ bzero_mbuf(m);
+ m_freem(m);
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invlen);
+ return EINVAL;
+ }
if (key_validate_ext(ext, extlen)) {
+ bzero_mbuf(m);
m_freem(m);
- pfkeystat.out_invlen++;
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invlen);
return EINVAL;
}
/* m is already freed */
return ENOBUFS;
}
- ext = (struct sadb_ext *)(mtod(n, caddr_t) + toff);
+ ext = (struct sadb_ext *)(void *)(mtod(n, caddr_t) + toff);
mhp->ext[ext->sadb_ext_type] = ext;
mhp->extoff[ext->sadb_ext_type] = off;
}
if (off != end) {
+ bzero_mbuf(m);
m_freem(m);
- pfkeystat.out_invlen++;
+ PFKEY_STAT_INCREMENT(pfkeystat.out_invlen);
return EINVAL;
}
}
static int
-key_validate_ext(ext, len)
- const struct sadb_ext *ext;
- int len;
+key_validate_ext(
+ const struct sadb_ext *ext,
+ int len)
{
struct sockaddr *sa;
enum { NONE, ADDR } checktype = NONE;
- int baselen;
+ int baselen = 0;
const int sal = offsetof(struct sockaddr, sa_len) + sizeof(sa->sa_len);
- if (len != PFKEY_UNUNIT64(ext->sadb_ext_len))
+ if (len != PFKEY_UNUNIT64(ext->sadb_ext_len)) {
return EINVAL;
+ }
/* if it does not match minimum/maximum length, bail */
if (ext->sadb_ext_type >= sizeof(minsize) / sizeof(minsize[0]) ||
- ext->sadb_ext_type >= sizeof(maxsize) / sizeof(maxsize[0]))
+ ext->sadb_ext_type >= sizeof(maxsize) / sizeof(maxsize[0])) {
return EINVAL;
- if (!minsize[ext->sadb_ext_type] || len < minsize[ext->sadb_ext_type])
+ }
+ if (!minsize[ext->sadb_ext_type] || len < minsize[ext->sadb_ext_type]) {
return EINVAL;
- if (maxsize[ext->sadb_ext_type] && len > maxsize[ext->sadb_ext_type])
+ }
+ if (maxsize[ext->sadb_ext_type] && len > maxsize[ext->sadb_ext_type]) {
return EINVAL;
+ }
/* more checks based on sadb_ext_type XXX need more */
switch (ext->sadb_ext_type) {
case SADB_EXT_ADDRESS_SRC:
case SADB_EXT_ADDRESS_DST:
case SADB_EXT_ADDRESS_PROXY:
+ case SADB_X_EXT_ADDR_RANGE_SRC_START:
+ case SADB_X_EXT_ADDR_RANGE_SRC_END:
+ case SADB_X_EXT_ADDR_RANGE_DST_START:
+ case SADB_X_EXT_ADDR_RANGE_DST_END:
+ case SADB_EXT_MIGRATE_ADDRESS_SRC:
+ case SADB_EXT_MIGRATE_ADDRESS_DST:
baselen = PFKEY_ALIGN8(sizeof(struct sadb_address));
checktype = ADDR;
break;
case SADB_EXT_IDENTITY_SRC:
case SADB_EXT_IDENTITY_DST:
- if (((struct sadb_ident *)ext)->sadb_ident_type ==
- SADB_X_IDENTTYPE_ADDR) {
+ if (((struct sadb_ident *)(uintptr_t)(size_t)ext)->
+ sadb_ident_type == SADB_X_IDENTTYPE_ADDR) {
baselen = PFKEY_ALIGN8(sizeof(struct sadb_ident));
checktype = ADDR;
- } else
+ } else {
checktype = NONE;
+ }
break;
default:
checktype = NONE;
case NONE:
break;
case ADDR:
- sa = (struct sockaddr *)((caddr_t)ext + baselen);
- if (len < baselen + sal)
+ sa = (struct sockaddr *)((caddr_t)(uintptr_t)ext + baselen);
+
+ if (len < baselen + sal) {
return EINVAL;
- if (baselen + PFKEY_ALIGN8(sa->sa_len) != len)
+ }
+ if (baselen + PFKEY_ALIGN8(sa->sa_len) != len) {
return EINVAL;
+ }
break;
}
+ /* check key bits length */
+ if (ext->sadb_ext_type == SADB_EXT_KEY_AUTH ||
+ ext->sadb_ext_type == SADB_EXT_KEY_ENCRYPT) {
+ struct sadb_key *key = (struct sadb_key *)(uintptr_t)ext;
+ if (len < (sizeof(struct sadb_key) + _KEYLEN(key))) {
+ return EINVAL;
+ }
+ }
+
return 0;
}
-void
-key_domain_init()
+/*
+ * XXX: maybe This function is called after INBOUND IPsec processing.
+ *
+ * Special check for tunnel-mode packets.
+ * We must make some checks for consistency between inner and outer IP header.
+ *
+ * xxx more checks to be provided
+ */
+int
+key_checktunnelsanity(
+ struct secasvar *sav,
+ __unused u_int family,
+ __unused caddr_t src,
+ __unused caddr_t dst)
{
- int i;
+ /* sanity check */
+ if (sav->sah == NULL) {
+ panic("sav->sah == NULL at key_checktunnelsanity");
+ }
- bzero((caddr_t)&key_cb, sizeof(key_cb));
-
- for (i = 0; i < IPSEC_DIR_MAX; i++) {
- LIST_INIT(&sptree[i]);
- }
-
- LIST_INIT(&sahtree);
-
- for (i = 0; i <= SADB_SATYPE_MAX; i++) {
- LIST_INIT(®tree[i]);
- }
-
-#ifndef IPSEC_NONBLOCK_ACQUIRE
- LIST_INIT(&acqtree);
-#endif
- LIST_INIT(&spacqtree);
-
- /* system default */
-#if INET
- ip4_def_policy.policy = IPSEC_POLICY_NONE;
- ip4_def_policy.refcnt++; /*never reclaim this*/
-#endif
-#if INET6
- ip6_def_policy.policy = IPSEC_POLICY_NONE;
- ip6_def_policy.refcnt++; /*never reclaim this*/
-#endif
-
-#ifndef IPSEC_DEBUG2
- timeout((void *)key_timehandler, (void *)0, hz);
-#endif /*IPSEC_DEBUG2*/
-
- /* initialize key statistics */
- keystat.getspi_count = 1;
-
-#ifndef __APPLE__
- printf("IPsec: Initialized Security Association Processing.\n");
-#endif
-
- return;
-}
-
-/*
- * XXX: maybe This function is called after INBOUND IPsec processing.
- *
- * Special check for tunnel-mode packets.
- * We must make some checks for consistency between inner and outer IP header.
- *
- * xxx more checks to be provided
- */
-int
-key_checktunnelsanity(sav, family, src, dst)
- struct secasvar *sav;
- u_int family;
- caddr_t src;
- caddr_t dst;
-{
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
- /* sanity check */
- if (sav->sah == NULL)
- panic("sav->sah == NULL at key_checktunnelsanity");
-
- /* XXX: check inner IP header */
+ /* XXX: check inner IP header */
return 1;
}
-#if 0
-#define hostnamelen strlen(hostname)
-
-/*
- * Get FQDN for the host.
- * If the administrator configured hostname (by hostname(1)) without
- * domain name, returns nothing.
- */
-static const char *
-key_getfqdn()
-{
- int i;
- int hasdot;
- static char fqdn[MAXHOSTNAMELEN + 1];
-
- if (!hostnamelen)
- return NULL;
-
- /* check if it comes with domain name. */
- hasdot = 0;
- for (i = 0; i < hostnamelen; i++) {
- if (hostname[i] == '.')
- hasdot++;
- }
- if (!hasdot)
- return NULL;
-
- /* NOTE: hostname may not be NUL-terminated. */
- bzero(fqdn, sizeof(fqdn));
- bcopy(hostname, fqdn, hostnamelen);
- fqdn[hostnamelen] = '\0';
- return fqdn;
-}
-
-/*
- * get username@FQDN for the host/user.
- */
-static const char *
-key_getuserfqdn()
-{
- const char *host;
- static char userfqdn[MAXHOSTNAMELEN + MAXLOGNAME + 2];
- struct proc *p = curproc;
- char *q;
-
- if (!p || !p->p_pgrp || !p->p_pgrp->pg_session)
- return NULL;
- if (!(host = key_getfqdn()))
- return NULL;
-
- /* NOTE: s_login may not be-NUL terminated. */
- bzero(userfqdn, sizeof(userfqdn));
- bcopy(p->p_pgrp->pg_session->s_login, userfqdn, MAXLOGNAME);
- userfqdn[MAXLOGNAME] = '\0'; /* safeguard */
- q = userfqdn + strlen(userfqdn);
- *q++ = '@';
- bcopy(host, q, strlen(host));
- q += strlen(host);
- *q++ = '\0';
-
- return userfqdn;
-}
-#endif
-
/* record data transfer on SA, and update timestamps */
void
-key_sa_recordxfer(sav, m)
- struct secasvar *sav;
- struct mbuf *m;
+key_sa_recordxfer(
+ struct secasvar *sav,
+ struct mbuf *m)
{
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
- if (!sav)
+ if (!sav) {
panic("key_sa_recordxfer called with sav == NULL");
- if (!m)
+ }
+ if (!m) {
panic("key_sa_recordxfer called with m == NULL");
- if (!sav->lft_c)
+ }
+ if (!sav->lft_c) {
return;
+ }
+ lck_mtx_lock(sadb_mutex);
/*
* XXX Currently, there is a difference of bytes size
* between inbound and outbound processing.
* <--------------> HARD
* <-----> SOFT
*/
- {
- struct timeval tv;
- microtime(&tv);
- sav->lft_c->sadb_lifetime_usetime = tv.tv_sec;
- /* XXX check for expires? */
- }
+ {
+ struct timeval tv;
+ microtime(&tv);
+ sav->lft_c->sadb_lifetime_usetime = tv.tv_sec;
+ /* XXX check for expires? */
+ }
+ lck_mtx_unlock(sadb_mutex);
return;
}
/* dumb version */
void
-key_sa_routechange(dst)
- struct sockaddr *dst;
+key_sa_routechange(
+ struct sockaddr *dst)
{
struct secashead *sah;
struct route *ro;
lck_mtx_lock(sadb_mutex);
LIST_FOREACH(sah, &sahtree, chain) {
- ro = &sah->sa_route;
+ ro = (struct route *)&sah->sa_route;
if (ro->ro_rt && dst->sa_len == ro->ro_dst.sa_len
- && bcmp(dst, &ro->ro_dst, dst->sa_len) == 0) {
- rtfree(ro->ro_rt);
- ro->ro_rt = (struct rtentry *)NULL;
+ && bcmp(dst, &ro->ro_dst, dst->sa_len) == 0) {
+ ROUTE_RELEASE(ro);
}
}
lck_mtx_unlock(sadb_mutex);
return;
}
-static void
-key_sa_chgstate(sav, state)
- struct secasvar *sav;
- u_int8_t state;
+void
+key_sa_chgstate(
+ struct secasvar *sav,
+ u_int8_t state)
{
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
- if (sav == NULL)
+ if (sav == NULL) {
panic("key_sa_chgstate called with sav == NULL");
+ }
- if (sav->state == state)
+ if (sav->state == state) {
return;
+ }
- if (__LIST_CHAINED(sav))
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_OWNED);
+
+ if (__LIST_CHAINED(sav)) {
LIST_REMOVE(sav, chain);
+ }
sav->state = state;
LIST_INSERT_HEAD(&sav->sah->savtree[state], sav, chain);
}
void
-key_sa_stir_iv(sav)
- struct secasvar *sav;
+key_sa_stir_iv(
+ struct secasvar *sav)
{
-
- lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED);
-
- if (!sav->iv)
+ lck_mtx_lock(sadb_mutex);
+ if (!sav->iv) {
panic("key_sa_stir_iv called with sav == NULL");
+ }
key_randomfill(sav->iv, sav->ivlen);
+ lck_mtx_unlock(sadb_mutex);
}
/* XXX too much? */
static struct mbuf *
-key_alloc_mbuf(l)
- int l;
+key_alloc_mbuf(
+ int l)
{
struct mbuf *m = NULL, *n;
int len, t;
len = l;
while (len > 0) {
MGET(n, M_DONTWAIT, MT_DATA);
- if (n && len > MLEN)
+ if (n && len > MLEN) {
MCLGET(n, M_DONTWAIT);
+ }
if (!n) {
m_freem(m);
return NULL;
n->m_next = NULL;
n->m_len = 0;
- n->m_len = M_TRAILINGSPACE(n);
+ n->m_len = (int)M_TRAILINGSPACE(n);
/* use the bottom of mbuf, hoping we can prepend afterwards */
if (n->m_len > len) {
t = (n->m_len - len) & ~(sizeof(long) - 1);
len -= n->m_len;
- if (m)
+ if (m) {
m_cat(m, n);
- else
+ } else {
m = n;
+ }
}
return m;
}
+
+static struct mbuf *
+key_setdumpsastats(u_int32_t dir,
+ struct sastat *stats,
+ u_int32_t max_stats,
+ u_int64_t session_ids[],
+ u_int32_t seq,
+ u_int32_t pid)
+{
+ struct mbuf *result = NULL, *m = NULL;
+
+ m = key_setsadbmsg(SADB_GETSASTAT, 0, 0, seq, pid, 0);
+ if (!m) {
+ goto fail;
+ }
+ result = m;
+
+ m = key_setsadbsession_id(session_ids);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
+
+ m = key_setsadbsastat(dir,
+ stats,
+ max_stats);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
+
+ if ((result->m_flags & M_PKTHDR) == 0) {
+ goto fail;
+ }
+
+ if (result->m_len < sizeof(struct sadb_msg)) {
+ result = m_pullup(result, sizeof(struct sadb_msg));
+ if (result == NULL) {
+ goto fail;
+ }
+ }
+
+ result->m_pkthdr.len = 0;
+ for (m = result; m; m = m->m_next) {
+ result->m_pkthdr.len += m->m_len;
+ }
+
+ if (PFKEY_UNIT64(result->m_pkthdr.len) > UINT16_MAX) {
+ ipseclog((LOG_ERR, "key_setdumpsastats: length too nbug: %u", result->m_pkthdr.len));
+ goto fail;
+ }
+
+ mtod(result, struct sadb_msg *)->sadb_msg_len =
+ (u_int16_t)PFKEY_UNIT64(result->m_pkthdr.len);
+
+ return result;
+
+fail:
+ if (result) {
+ m_freem(result);
+ }
+ return NULL;
+}
+
+/*
+ * SADB_GETSASTAT processing
+ * dump all stats for matching entries in SAD.
+ *
+ * m will always be freed.
+ */
+
+static int
+key_getsastat(struct socket *so,
+ struct mbuf *m,
+ const struct sadb_msghdr *mhp)
+{
+ struct sadb_session_id *session_id;
+ size_t bufsize = 0;
+ u_int32_t arg_count, res_count;
+ struct sadb_sastat *sa_stats_arg;
+ struct sastat *sa_stats_sav = NULL;
+ struct mbuf *n;
+ int error = 0;
+
+ /* sanity check */
+ if (so == NULL || m == NULL || mhp == NULL || mhp->msg == NULL) {
+ panic("%s: NULL pointer is passed.\n", __FUNCTION__);
+ }
+
+ if (mhp->ext[SADB_EXT_SESSION_ID] == NULL) {
+ printf("%s: invalid message is passed. missing session-id.\n", __FUNCTION__);
+ return key_senderror(so, m, EINVAL);
+ }
+ if (mhp->extlen[SADB_EXT_SESSION_ID] < sizeof(struct sadb_session_id)) {
+ printf("%s: invalid message is passed. short session-id.\n", __FUNCTION__);
+ return key_senderror(so, m, EINVAL);
+ }
+ if (mhp->ext[SADB_EXT_SASTAT] == NULL) {
+ printf("%s: invalid message is passed. missing stat args.\n", __FUNCTION__);
+ return key_senderror(so, m, EINVAL);
+ }
+ if (mhp->extlen[SADB_EXT_SASTAT] < sizeof(*sa_stats_arg)) {
+ printf("%s: invalid message is passed. short stat args.\n", __FUNCTION__);
+ return key_senderror(so, m, EINVAL);
+ }
+
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
+
+ // exit early if there are no active SAs
+ if (ipsec_sav_count == 0) {
+ printf("%s: No active SAs.\n", __FUNCTION__);
+ error = ENOENT;
+ goto end;
+ }
+
+ if (os_mul_overflow(ipsec_sav_count + 1, sizeof(*sa_stats_sav), &bufsize)) {
+ panic("key_getsastat bufsize requested memory overflow %u\n", ipsec_sav_count);
+ }
+
+ KMALLOC_WAIT(sa_stats_sav, __typeof__(sa_stats_sav), bufsize);
+ if (sa_stats_sav == NULL) {
+ printf("%s: No more memory.\n", __FUNCTION__);
+ error = ENOMEM;
+ goto end;
+ }
+ bzero(sa_stats_sav, bufsize);
+
+ sa_stats_arg = (__typeof__(sa_stats_arg))
+ (void *)mhp->ext[SADB_EXT_SASTAT];
+ arg_count = sa_stats_arg->sadb_sastat_list_len;
+ // exit early if there are no requested SAs
+ if (arg_count == 0) {
+ printf("%s: No SAs requested.\n", __FUNCTION__);
+ error = ENOENT;
+ goto end;
+ }
+ if (PFKEY_UNUNIT64(sa_stats_arg->sadb_sastat_len) < (sizeof(*sa_stats_arg) +
+ (arg_count * sizeof(struct sastat)))) {
+ printf("%s: invalid message is passed. sa stat extlen shorter than requested stat length.\n", __FUNCTION__);
+ error = EINVAL;
+ goto end;
+ }
+
+ res_count = 0;
+
+ if (key_getsastatbyspi((struct sastat *)(sa_stats_arg + 1),
+ arg_count,
+ sa_stats_sav,
+ bufsize,
+ &res_count)) {
+ printf("%s: Error finding SAs.\n", __FUNCTION__);
+ error = ENOENT;
+ goto end;
+ }
+ if (!res_count) {
+ printf("%s: No SAs found.\n", __FUNCTION__);
+ error = ENOENT;
+ goto end;
+ }
+
+ session_id = (__typeof__(session_id))
+ (void *)mhp->ext[SADB_EXT_SESSION_ID];
+
+ /* send this to the userland. */
+ n = key_setdumpsastats(sa_stats_arg->sadb_sastat_dir,
+ sa_stats_sav,
+ res_count,
+ session_id->sadb_session_id_v,
+ mhp->msg->sadb_msg_seq,
+ mhp->msg->sadb_msg_pid);
+ if (!n) {
+ printf("%s: No bufs to dump stats.\n", __FUNCTION__);
+ error = ENOBUFS;
+ goto end;
+ }
+
+ key_sendup_mbuf(so, n, KEY_SENDUP_ALL);
+end:
+ if (sa_stats_sav) {
+ KFREE(sa_stats_sav);
+ }
+
+ if (error) {
+ return key_senderror(so, m, error);
+ }
+
+ m_freem(m);
+ return 0;
+}
+
+static void
+key_update_natt_keepalive_timestamp(struct secasvar *sav_sent,
+ struct secasvar *sav_update)
+{
+ struct secasindex saidx_swap_sent_addr;
+
+ // exit early if two SAs are identical, or if sav_update is current
+ if (sav_sent == sav_update ||
+ sav_update->natt_last_activity == natt_now) {
+ return;
+ }
+
+ // assuming that (sav_update->remote_ike_port != 0 && (esp_udp_encap_port & 0xFFFF) != 0)
+
+ bzero(&saidx_swap_sent_addr, sizeof(saidx_swap_sent_addr));
+ memcpy(&saidx_swap_sent_addr.src, &sav_sent->sah->saidx.dst, sizeof(saidx_swap_sent_addr.src));
+ memcpy(&saidx_swap_sent_addr.dst, &sav_sent->sah->saidx.src, sizeof(saidx_swap_sent_addr.dst));
+ saidx_swap_sent_addr.proto = sav_sent->sah->saidx.proto;
+ saidx_swap_sent_addr.mode = sav_sent->sah->saidx.mode;
+ // we ignore reqid for split-tunnel setups
+
+ if (key_cmpsaidx(&sav_sent->sah->saidx, &sav_update->sah->saidx, CMP_MODE | CMP_PORT) ||
+ key_cmpsaidx(&saidx_swap_sent_addr, &sav_update->sah->saidx, CMP_MODE | CMP_PORT)) {
+ sav_update->natt_last_activity = natt_now;
+ }
+}
+
+static int
+key_send_delsp(struct secpolicy *sp)
+{
+ struct mbuf *result = NULL, *m;
+
+ if (sp == NULL) {
+ goto fail;
+ }
+
+ /* set msg header */
+ m = key_setsadbmsg(SADB_X_SPDDELETE, 0, 0, 0, 0, 0);
+ if (!m) {
+ goto fail;
+ }
+ result = m;
+
+ /* set sadb_address(es) for source */
+ if (sp->spidx.src_range.start.ss_len > 0) {
+ m = key_setsadbaddr(SADB_X_EXT_ADDR_RANGE_SRC_START,
+ (struct sockaddr *)&sp->spidx.src_range.start, sp->spidx.prefs,
+ sp->spidx.ul_proto);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
+
+ m = key_setsadbaddr(SADB_X_EXT_ADDR_RANGE_SRC_END,
+ (struct sockaddr *)&sp->spidx.src_range.end, sp->spidx.prefs,
+ sp->spidx.ul_proto);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
+ } else {
+ m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC,
+ (struct sockaddr *)&sp->spidx.src, sp->spidx.prefs,
+ sp->spidx.ul_proto);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
+ }
+
+ /* set sadb_address(es) for destination */
+ if (sp->spidx.dst_range.start.ss_len > 0) {
+ m = key_setsadbaddr(SADB_X_EXT_ADDR_RANGE_DST_START,
+ (struct sockaddr *)&sp->spidx.dst_range.start, sp->spidx.prefd,
+ sp->spidx.ul_proto);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
+
+ m = key_setsadbaddr(SADB_X_EXT_ADDR_RANGE_DST_END,
+ (struct sockaddr *)&sp->spidx.dst_range.end, sp->spidx.prefd,
+ sp->spidx.ul_proto);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
+ } else {
+ m = key_setsadbaddr(SADB_EXT_ADDRESS_DST,
+ (struct sockaddr *)&sp->spidx.dst, sp->spidx.prefd,
+ sp->spidx.ul_proto);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
+ }
+
+ /* set secpolicy */
+ m = key_sp2msg(sp);
+ if (!m) {
+ goto fail;
+ }
+ m_cat(result, m);
+
+ if ((result->m_flags & M_PKTHDR) == 0) {
+ goto fail;
+ }
+
+ if (result->m_len < sizeof(struct sadb_msg)) {
+ result = m_pullup(result, sizeof(struct sadb_msg));
+ if (result == NULL) {
+ goto fail;
+ }
+ }
+
+ result->m_pkthdr.len = 0;
+ for (m = result; m; m = m->m_next) {
+ result->m_pkthdr.len += m->m_len;
+ }
+
+ if (PFKEY_UNIT64(result->m_pkthdr.len) >= UINT16_MAX) {
+ ipseclog((LOG_ERR, "key_send_delsp: length too big: %d", result->m_pkthdr.len));
+ goto fail;
+ }
+
+ mtod(result, struct sadb_msg *)->sadb_msg_len = (u_int16_t)PFKEY_UNIT64(result->m_pkthdr.len);
+
+ return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED);
+
+fail:
+ if (result) {
+ m_free(result);
+ }
+ return -1;
+}
+
+void
+key_delsp_for_ipsec_if(ifnet_t ipsec_if)
+{
+ struct secashead *sah;
+ struct secasvar *sav, *nextsav;
+ u_int stateidx;
+ u_int state;
+ struct secpolicy *sp, *nextsp;
+ int dir;
+
+ if (ipsec_if == NULL) {
+ return;
+ }
+
+ LCK_MTX_ASSERT(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED);
+
+ lck_mtx_lock(sadb_mutex);
+
+ for (dir = 0; dir < IPSEC_DIR_MAX; dir++) {
+ for (sp = LIST_FIRST(&sptree[dir]);
+ sp != NULL;
+ sp = nextsp) {
+ nextsp = LIST_NEXT(sp, chain);
+
+ if (sp->ipsec_if == ipsec_if) {
+ ifnet_release(sp->ipsec_if);
+ sp->ipsec_if = NULL;
+
+ key_send_delsp(sp);
+
+ sp->state = IPSEC_SPSTATE_DEAD;
+ key_freesp(sp, KEY_SADB_LOCKED);
+ }
+ }
+ }
+
+ LIST_FOREACH(sah, &sahtree, chain) {
+ if (sah->ipsec_if == ipsec_if) {
+ /* This SAH is linked to the IPsec interface. It now needs to close. */
+ ifnet_release(sah->ipsec_if);
+ sah->ipsec_if = NULL;
+
+ for (stateidx = 0; stateidx < _ARRAYLEN(saorder_state_alive); stateidx++) {
+ state = saorder_state_any[stateidx];
+ for (sav = LIST_FIRST(&sah->savtree[state]); sav != NULL; sav = nextsav) {
+ nextsav = LIST_NEXT(sav, chain);
+
+ key_sa_chgstate(sav, SADB_SASTATE_DEAD);
+ key_freesav(sav, KEY_SADB_LOCKED);
+ }
+ }
+
+ sah->state = SADB_SASTATE_DEAD;
+ }
+ }
+
+ lck_mtx_unlock(sadb_mutex);
+}
+
+__private_extern__ u_int32_t
+key_fill_offload_frames_for_savs(ifnet_t ifp,
+ struct ifnet_keepalive_offload_frame *frames_array,
+ u_int32_t frames_array_count,
+ size_t frame_data_offset)
+{
+ struct secashead *sah = NULL;
+ struct secasvar *sav = NULL;
+ struct ifnet_keepalive_offload_frame *frame = frames_array;
+ u_int32_t frame_index = 0;
+
+ if (frame == NULL || frames_array_count == 0) {
+ return frame_index;
+ }
+
+ lck_mtx_lock(sadb_mutex);
+ LIST_FOREACH(sah, &sahtree, chain) {
+ LIST_FOREACH(sav, &sah->savtree[SADB_SASTATE_MATURE], chain) {
+ if (ipsec_fill_offload_frame(ifp, sav, frame, frame_data_offset)) {
+ frame_index++;
+ if (frame_index >= frames_array_count) {
+ lck_mtx_unlock(sadb_mutex);
+ return frame_index;
+ }
+ frame = &(frames_array[frame_index]);
+ }
+ }
+ }
+ lck_mtx_unlock(sadb_mutex);
+
+ return frame_index;
+}
+
+#pragma mark Custom IPsec
+
+__private_extern__ bool
+key_custom_ipsec_token_is_valid(void *ipsec_token)
+{
+ if (ipsec_token == NULL) {
+ return false;
+ }
+
+ struct secashead *sah = (struct secashead *)ipsec_token;
+
+ return (sah->flags & SECURITY_ASSOCIATION_CUSTOM_IPSEC) == SECURITY_ASSOCIATION_CUSTOM_IPSEC;
+}
+
+__private_extern__ int
+key_reserve_custom_ipsec(void **ipsec_token, union sockaddr_in_4_6 *src, union sockaddr_in_4_6 *dst,
+ u_int8_t proto)
+{
+ if (src == NULL || dst == NULL) {
+ ipseclog((LOG_ERR, "register custom ipsec: invalid address\n"));
+ return EINVAL;
+ }
+
+ if (src->sa.sa_family != dst->sa.sa_family) {
+ ipseclog((LOG_ERR, "register custom ipsec: address family mismatched\n"));
+ return EINVAL;
+ }
+
+ if (src->sa.sa_len != dst->sa.sa_len) {
+ ipseclog((LOG_ERR, "register custom ipsec: address struct size mismatched\n"));
+ return EINVAL;
+ }
+
+ if (ipsec_token == NULL) {
+ ipseclog((LOG_ERR, "register custom ipsec: invalid ipsec token\n"));
+ return EINVAL;
+ }
+
+ switch (src->sa.sa_family) {
+ case AF_INET:
+ if (src->sa.sa_len != sizeof(struct sockaddr_in)) {
+ ipseclog((LOG_ERR, "register custom esp: invalid address length\n"));
+ return EINVAL;
+ }
+ break;
+ case AF_INET6:
+ if (src->sa.sa_len != sizeof(struct sockaddr_in6)) {
+ ipseclog((LOG_ERR, "register custom esp: invalid address length\n"));
+ return EINVAL;
+ }
+ break;
+ default:
+ ipseclog((LOG_ERR, "register custom esp: invalid address length\n"));
+ return EAFNOSUPPORT;
+ }
+
+ if (proto != IPPROTO_ESP && proto != IPPROTO_AH) {
+ ipseclog((LOG_ERR, "register custom esp: invalid proto %u\n", proto));
+ return EINVAL;
+ }
+
+ struct secasindex saidx = {};
+ KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, &src->sa, &dst->sa, 0, &saidx);
+
+ lck_mtx_lock(sadb_mutex);
+
+ struct secashead *sah = NULL;
+ if ((sah = key_getsah(&saidx, SECURITY_ASSOCIATION_ANY)) != NULL) {
+ lck_mtx_unlock(sadb_mutex);
+ ipseclog((LOG_ERR, "register custom esp: SA exists\n"));
+ return EEXIST;
+ }
+
+ if ((sah = key_newsah(&saidx, NULL, 0, IPSEC_DIR_ANY, SECURITY_ASSOCIATION_CUSTOM_IPSEC)) == NULL) {
+ lck_mtx_unlock(sadb_mutex);
+ ipseclog((LOG_DEBUG, "register custom esp: No more memory.\n"));
+ return ENOBUFS;
+ }
+
+ *ipsec_token = (void *)sah;
+
+ lck_mtx_unlock(sadb_mutex);
+ return 0;
+}
+
+__private_extern__ void
+key_release_custom_ipsec(void **ipsec_token)
+{
+ struct secashead *sah = *ipsec_token;
+ VERIFY(sah != NULL);
+
+ lck_mtx_lock(sadb_mutex);
+
+ VERIFY((sah->flags & SECURITY_ASSOCIATION_CUSTOM_IPSEC) == SECURITY_ASSOCIATION_CUSTOM_IPSEC);
+
+ bool sa_present = true;
+ if (LIST_FIRST(&sah->savtree[SADB_SASTATE_LARVAL]) == NULL &&
+ LIST_FIRST(&sah->savtree[SADB_SASTATE_MATURE]) == NULL &&
+ LIST_FIRST(&sah->savtree[SADB_SASTATE_DYING]) == NULL &&
+ LIST_FIRST(&sah->savtree[SADB_SASTATE_DEAD]) == NULL) {
+ sa_present = false;
+ }
+ VERIFY(sa_present == false);
+
+ key_delsah(sah);
+
+ lck_mtx_unlock(sadb_mutex);
+
+ *ipsec_token = NULL;
+ return;
+}
projects / apple / xnu.git / blobdiff