X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/5d5c5d0d5b79ade9a973d55186ffda2638ba2b6e..7e41aa883dd258f888d0470250eead40a53ef1f5:/bsd/netkey/key.c?ds=sidebyside diff --git a/bsd/netkey/key.c b/bsd/netkey/key.c index aee29ba54..7a0c50b89 100644 --- a/bsd/netkey/key.c +++ b/bsd/netkey/key.c @@ -1,3 +1,31 @@ +/* + * Copyright (c) 2008-2016 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 $ */ @@ -34,6 +62,7 @@ * This code is referd to RFC 2367 */ +#include #include #include #include @@ -49,6 +78,7 @@ #include #include #include +#include #include @@ -67,13 +97,6 @@ #include #endif /* INET6 */ -#if INET -#include -#endif -#if INET6 -#include -#endif /* INET6 */ - #include #include #include @@ -107,17 +130,19 @@ #include -#ifndef satosin -#define satosin(s) ((struct sockaddr_in *)s) -#endif - #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: @@ -131,6 +156,7 @@ extern lck_mtx_t *nd6_mutex; */ 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 */ @@ -140,7 +166,9 @@ 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.*/ +__private_extern__ int natt_keepalive_interval = 20; /* interval between natt keepalives.*/ +__private_extern__ int ipsec_policy_count = 0; +static int ipsec_sav_count = 0; static u_int32_t acq_seq = 0; static int key_tick_init_random = 0; @@ -149,8 +177,8 @@ __private_extern__ u_int32_t natt_now = 0; 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 */ - +/* registed list */ + #define SPIHASHSIZE 128 #define SPIHASH(x) (((x) ^ ((x) >> 16)) % SPIHASHSIZE) static LIST_HEAD(_spihash, secasvar) spihash[SPIHASHSIZE]; @@ -199,6 +227,16 @@ static const int minsize[] = { 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 */ @@ -221,6 +259,16 @@ static const int maxsize[] = { 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; @@ -228,151 +276,165 @@ static int ipsec_esp_auth = 0; 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((u_int32_t)(n), M_SECA, M_WAITOK)) +#define KMALLOC_NOWAIT(p, t, n) \ +((p) = (t) _MALLOC((u_int32_t)(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 { @@ -382,94 +444,100 @@ 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 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); static struct secasvar *key_newsav(struct mbuf *, - const struct sadb_msghdr *, struct secashead *, int *); -static void key_delsav(struct secasvar *); + const struct sadb_msghdr *, struct secashead *, int *, + struct socket *); static struct secashead *key_getsah(struct secasindex *); 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); + struct sockaddr *, u_int8_t, u_int16_t); +static struct mbuf *key_setsadbipsecif(ifnet_t, ifnet_t, ifnet_t, int); #if 0 static struct mbuf *key_setsadbident(u_int16_t, u_int16_t, caddr_t, - int, u_int64_t); + int, u_int64_t); #endif -static struct mbuf *key_setsadbxsa2(u_int8_t, u_int32_t, u_int32_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_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 *); + const struct sadb_msghdr *); #if IPSEC_DOSEQCHECK static struct secasvar *key_getsavbyseq(struct secashead *, u_int32_t); #endif static int key_add(struct socket *, struct mbuf *, const struct sadb_msghdr *); static int key_setident(struct secashead *, struct mbuf *, - const struct sadb_msghdr *); + 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 *); @@ -489,55 +557,136 @@ static struct secacq *key_getacqbyseq(u_int32_t); 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 int key_setsaval2(struct secasvar *sav, + u_int8_t satype, + u_int8_t alg_auth, + u_int8_t alg_enc, + u_int32_t flags, + u_int8_t replay, + struct sadb_key *key_auth, + u_int16_t key_auth_len, + struct sadb_key *key_enc, + u_int16_t key_enc_len, + u_int16_t natt_port, + u_int32_t seq, + u_int32_t spi, + u_int32_t pid, + struct sadb_lifetime *lifetime_hard, + struct sadb_lifetime *lifetime_soft); +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); +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); +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); + + 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(); + + lck_mtx_init(sadb_mutex, sadb_mutex_grp, sadb_mutex_attr); - if ((sadb_mutex = lck_mtx_alloc_init(sadb_mutex_grp, sadb_mutex_attr)) == NULL) { - printf("key_init: can't alloc sadb_mutex\n"); - return; - } - + 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(); + + 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)); - raw_init(); + for (i = 0; i < IPSEC_DIR_MAX; i++) { + LIST_INIT(&sptree[i]); + } + ipsec_policy_count = 0; + + LIST_INIT(&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 +#if INET6 + ip6_def_policy.policy = IPSEC_POLICY_NONE; + ip6_def_policy.refcnt++; /*never reclaim this*/ +#endif + + key_timehandler_running = 0; + + /* initialize key statistics */ + keystat.getspi_count = 1; + +#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 */ /* @@ -547,58 +696,70 @@ key_init(void) * 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) panic("key_allocsp: NULL pointer is passed.\n"); - + /* check direction */ switch (dir) { - case IPSEC_DIR_INBOUND: - case IPSEC_DIR_OUTBOUND: - break; - default: - panic("key_allocsp: Invalid direction is passed.\n"); + case IPSEC_DIR_INBOUND: + case IPSEC_DIR_OUTBOUND: + break; + default: + panic("key_allocsp: Invalid direction is passed.\n"); } - + /* 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 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)) 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++; + 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:%p\n", - sp->refcnt, sp)); - + printf("DP key_allocsp cause refcnt++:%d SP:0x%llx\n", + sp->refcnt, (uint64_t)VM_KERNEL_ADDRPERM(sp))); return sp; } @@ -607,37 +768,38 @@ found: * 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) continue; - + r1 = r2 = NULL; for (p = sp->req; p; p = p->next) { if (p->saidx.mode != IPSEC_MODE_TUNNEL) continue; - + r1 = r2; r2 = p; - + if (!r1) { /* here we look at address matches only */ spidx = sp->spidx; @@ -655,26 +817,80 @@ key_gettunnel(osrc, odst, isrc, idst) 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)) 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 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; + + if (interface == NULL) + return NULL; + + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED); + + lck_mtx_lock(sadb_mutex); + + LIST_FOREACH(sah, &sahtree, chain) { + if (sah->ipsec_if == interface && + (family == AF_INET6 || family == AF_INET) && + sah->dir == IPSEC_DIR_OUTBOUND) { + /* 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; + } + } + + 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. @@ -682,87 +898,64 @@ found: * 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; - - lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - + struct sockaddr_in *sin; + + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED); + + *sav = NULL; + /* sanity check */ if (isr == NULL || saidx == NULL) panic("key_checkrequest: NULL pointer is passed.\n"); - + /* check mode */ switch (saidx->mode) { - case IPSEC_MODE_TRANSPORT: - case IPSEC_MODE_TUNNEL: - break; - case IPSEC_MODE_ANY: - default: - panic("key_checkrequest: Invalid policy defined.\n"); + case IPSEC_MODE_TRANSPORT: + case IPSEC_MODE_TUNNEL: + break; + case IPSEC_MODE_ANY: + default: + panic("key_checkrequest: Invalid policy defined.\n"); } - + /* 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; } - + return level == IPSEC_LEVEL_REQUIRE ? ENOENT : 0; } @@ -772,29 +965,34 @@ key_checkrequest(isr, saidx) * 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; - - lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - + struct sockaddr_in *sin; + u_int16_t dstport; + + lck_mtx_lock(sadb_mutex); + sah_search_calls++; LIST_FOREACH(sah, &sahtree, chain) { + 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. * This search order is important. @@ -806,145 +1004,206 @@ key_allocsa_policy(saidx) saorder_state_valid = saorder_state_valid_prefer_new; arraysize = _ARRAYLEN(saorder_state_valid_prefer_new); } - + + + 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; } -/* - * searching SAD with direction, protocol, mode and state. - * called by key_allocsa_policy(). - * OUT: - * NULL : not found - * others : found, pointer to a SA. - */ -static struct secasvar * -key_do_allocsa_policy(sah, state) - struct secashead *sah; - u_int state; +static void +key_send_delete (struct secasvar *sav) { - struct secasvar *sav, *nextsav, *candidate, *d; - - lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - - /* initilize */ - candidate = NULL; - - for (sav = LIST_FIRST(&sah->savtree[state]); - 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; - continue; - } - - /* Which SA is the better ? */ - - /* sanity check 2 */ - if (candidate->lft_c == NULL || sav->lft_c == NULL) - panic("key_do_allocsa_policy: " - "lifetime_current is NULL.\n"); + 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, 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; + 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(sav, KEY_SADB_LOCKED); +} +/* + * searching SAD with direction, protocol, mode and state. + * called by key_allocsa_policy(). + * OUT: + * NULL : not found + * others : found, pointer to a SA. + */ +static struct secasvar * +key_do_allocsa_policy( + struct secashead *sah, + u_int state, + u_int16_t dstport) +{ + struct secasvar *sav, *nextsav, *candidate, *natt_candidate, *no_natt_candidate, *d; + + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); + + /* initialize */ + candidate = NULL; + natt_candidate = NULL; + no_natt_candidate = NULL; + + for (sav = LIST_FIRST(&sah->savtree[state]); + sav != NULL; + sav = nextsav) { + + nextsav = LIST_NEXT(sav, chain); + + /* sanity check */ + KEY_CHKSASTATE(sav->state, state, "key_do_allocsa_policy"); + + 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) + panic("key_do_allocsa_policy: " + "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; + if ((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 * suitable candidate and the lifetime of the SA is not * 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; } @@ -965,25 +1224,26 @@ key_do_allocsa_policy(sah, state) * 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) { 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) panic("key_allocsa: NULL pointer is passed.\n"); - + /* * when both systems employ similar strategy to use a SA. * the search order is important even in the inbound case. @@ -995,7 +1255,7 @@ key_allocsa(family, src, dst, proto, spi) saorder_state_valid = saorder_state_valid_prefer_new; arraysize = _ARRAYLEN(saorder_state_valid_prefer_new); } - + /* * searching SAD. * XXX: to be checked internal IP header somewhere. Also when @@ -1008,6 +1268,7 @@ key_allocsa(family, src, dst, proto, spi) */ match = NULL; matchidx = arraysize; + lck_mtx_lock(sadb_mutex); LIST_FOREACH(sav, &spihash[SPIHASH(spi)], spihash) { if (sav->spi != spi) continue; @@ -1026,234 +1287,276 @@ key_allocsa(family, src, dst, proto, spi) } 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) + 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)); continue; - break; - default: - ipseclog((LOG_DEBUG, "key_allocsa: " - "unknown address family=%d.\n", - family)); - continue; } - + #endif /* check dst address */ switch (family) { - case AF_INET: - bzero(&sin, sizeof(sin)); - sin.sin_family = AF_INET; - sin.sin_len = sizeof(sin); - bcopy(dst, &sin.sin_addr, - sizeof(sin.sin_addr)); - if (key_sockaddrcmp((struct sockaddr*)&sin, - (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) + case AF_INET: + bzero(&sin, sizeof(sin)); + sin.sin_family = AF_INET; + sin.sin_len = sizeof(sin); + bcopy(dst, &sin.sin_addr, + sizeof(sin.sin_addr)); + if (key_sockaddrcmp((struct sockaddr*)&sin, + (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) + continue; + break; + default: + ipseclog((LOG_DEBUG, "key_allocsa: " + "unknown address family=%d.\n", family)); continue; - break; - default: - ipseclog((LOG_DEBUG, "key_allocsa: " - "unknown address family=%d.\n", family)); - continue; } - + match = sav; matchidx = tmpidx; } 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; } +u_int16_t +key_natt_get_translated_port( + struct secasvar *outsav) +{ + + struct secasindex saidx; + struct secashead *sah; + u_int stateidx, state; + const u_int *saorder_state_valid; + int arraysize; + + /* 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)); + + 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; + +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); + } + + 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; +} + +static int +key_do_get_translated_port( + struct secashead *sah, + struct secasvar *outsav, + u_int state) +{ + struct secasvar *currsav, *nextsav, *candidate; + + + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); + + /* initilize */ + candidate = NULL; + + for (currsav = LIST_FIRST(&sah->savtree[state]); + currsav != NULL; + currsav = nextsav) { + + nextsav = LIST_NEXT(currsav, chain); + + /* sanity check */ + KEY_CHKSASTATE(currsav->state, state, "key_do_get_translated_port"); + + if ((currsav->flags & SADB_X_EXT_NATT_MULTIPLEUSERS) == 0 || + currsav->remote_ike_port != outsav->remote_ike_port) + continue; + + if (candidate == NULL) { + candidate = currsav; + continue; + } + + /* Which SA is the better ? */ + + /* sanity check 2 */ + if (candidate->lft_c == NULL || currsav->lft_c == NULL) + panic("key_do_get_translated_port: " + "lifetime_current is NULL.\n"); + + /* 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*/ + } + + /* prefered new sa rather than old sa */ + if (candidate->lft_c->sadb_lifetime_addtime < + currsav->lft_c->sadb_lifetime_addtime) + candidate = currsav; + } + + if (candidate) { + outsav->natt_encapsulated_src_port = candidate->natt_encapsulated_src_port; + return 1; + } + + return 0; +} + /* * Must be called after calling key_allocsp(). - * For both the packet without socket and key_freeso(). */ void -key_freesp(sp) - struct secpolicy *sp; +key_freesp( + struct secpolicy *sp, + int locked) { - lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - + /* 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:%p\n", - sp->refcnt, sp)); - + 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; } -#if 0 /* - * Must be called after calling key_allocsp(). - * For the packet with socket. + * Must be called after calling key_allocsa(). + * This function is called by key_freesp() to free some SA allocated + * for a policy. */ void -key_freeso(so) - struct socket *so; +key_freesav( + struct secasvar *sav, + int locked) { - lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - - /* sanity check */ - if (so == NULL) - panic("key_freeso: NULL pointer is passed.\n"); - - switch (so->so_proto->pr_domain->dom_family) { -#if INET - case PF_INET: - { - 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); - } - 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); - - /* 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; - } - - return; -} -#endif - -static void -key_freesp_so(sp) - struct secpolicy **sp; -{ - - lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - - /* sanity check */ - if (sp == NULL || *sp == NULL) - panic("key_freesp_so: sp == NULL\n"); - - 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); - } - - 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(sav) - struct secasvar *sav; -{ - lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - + /* 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:%p SPI %u\n", - sav->refcnt, sav, (u_int32_t)ntohl(sav->spi))); - + 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; } @@ -1262,49 +1565,52 @@ key_freesav(sav) * free security policy entry. */ static void -key_delsp(sp) - struct secpolicy *sp; +key_delsp( + struct secpolicy *sp) { - int s; - - 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; - + if (sp->refcnt > 0) return; /* can't free */ - - s = splnet(); /*called from softclock()*/ + /* remove from SP index */ - if (__LIST_CHAINED(sp)) + if (__LIST_CHAINED(sp)) { LIST_REMOVE(sp, chain); - - { - struct ipsecrequest *isr = sp->req, *nextisr; - - 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; - } - - nextisr = isr->next; - KFREE(isr); - isr = nextisr; + 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); - - splx(s); - + return; } @@ -1314,17 +1620,17 @@ key_delsp(sp) * 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); - + /* sanity check */ if (spidx == NULL) panic("key_getsp: NULL pointer is passed.\n"); - + LIST_FOREACH(sp, &sptree[spidx->dir], chain) { if (sp->state == IPSEC_SPSTATE_DEAD) continue; @@ -1333,7 +1639,7 @@ key_getsp(spidx) return sp; } } - + return NULL; } @@ -1342,14 +1648,28 @@ key_getsp(spidx) * OUT: NULL : not found * others : found, pointer to a SP. */ -static struct secpolicy * -key_getspbyid(id) - u_int32_t id; +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(u_int32_t id) +{ + struct secpolicy *sp; + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - + LIST_FOREACH(sp, &sptree[IPSEC_DIR_INBOUND], chain) { if (sp->state == IPSEC_SPSTATE_DEAD) continue; @@ -1358,7 +1678,7 @@ key_getspbyid(id) return sp; } } - + LIST_FOREACH(sp, &sptree[IPSEC_DIR_OUTBOUND], chain) { if (sp->state == IPSEC_SPSTATE_DEAD) continue; @@ -1367,22 +1687,23 @@ key_getspbyid(id) return sp; } } - + return NULL; } 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) return newsp; - + newsp->refcnt = 1; newsp->req = NULL; - + return newsp; } @@ -1392,15 +1713,15 @@ key_newsp() * 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) panic("key_msg2sp: NULL pointer was passed.\n"); @@ -1411,220 +1732,247 @@ key_msg2sp(xpl0, len, error) *error = EINVAL; return NULL; } - + if ((newsp = key_newsp()) == NULL) { *error = ENOBUFS; return NULL; } - + newsp->spidx.dir = xpl0->sadb_x_policy_dir; newsp->policy = xpl0->sadb_x_policy_type; - + /* check policy */ switch (xpl0->sadb_x_policy_type) { - case IPSEC_POLICY_DISCARD: - case IPSEC_POLICY_NONE: - case IPSEC_POLICY_ENTRUST: - case IPSEC_POLICY_BYPASS: - newsp->req = NULL; - break; - - case IPSEC_POLICY_IPSEC: + case IPSEC_POLICY_DISCARD: + case IPSEC_POLICY_GENERATE: + case IPSEC_POLICY_NONE: + case IPSEC_POLICY_ENTRUST: + case IPSEC_POLICY_BYPASS: + newsp->req = NULL; + break; + + case IPSEC_POLICY_IPSEC: { - int tlen; - struct sadb_x_ipsecrequest *xisr; - struct ipsecrequest **p_isr = &newsp->req; - - /* validity check */ - if (PFKEY_EXTLEN(xpl0) < sizeof(*xpl0)) { - ipseclog((LOG_DEBUG, - "key_msg2sp: Invalid msg length.\n")); - key_freesp(newsp); - *error = EINVAL; - return NULL; - } - - tlen = PFKEY_EXTLEN(xpl0) - sizeof(*xpl0); - xisr = (struct sadb_x_ipsecrequest *)(xpl0 + 1); - - while (tlen > 0) { - - /* length check */ - if (xisr->sadb_x_ipsecrequest_len < sizeof(*xisr)) { - ipseclog((LOG_DEBUG, "key_msg2sp: " - "invalid ipsecrequest length.\n")); - key_freesp(newsp); - *error = EINVAL; - return NULL; - } - - /* allocate request buffer */ - KMALLOC(*p_isr, struct ipsecrequest *, sizeof(**p_isr)); - if ((*p_isr) == NULL) { - ipseclog((LOG_DEBUG, - "key_msg2sp: No more memory.\n")); - key_freesp(newsp); - *error = ENOBUFS; - return NULL; - } - bzero(*p_isr, sizeof(**p_isr)); - - /* set values */ - (*p_isr)->next = 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); - *error = EPROTONOSUPPORT; - return NULL; - } - (*p_isr)->saidx.proto = xisr->sadb_x_ipsecrequest_proto; - - switch (xisr->sadb_x_ipsecrequest_mode) { - case IPSEC_MODE_TRANSPORT: - case IPSEC_MODE_TUNNEL: - break; - case IPSEC_MODE_ANY: - default: + int tlen; + struct sadb_x_ipsecrequest *xisr; + struct ipsecrequest **p_isr = &newsp->req; + + /* validity check */ + if (PFKEY_EXTLEN(xpl0) < sizeof(*xpl0)) { ipseclog((LOG_DEBUG, - "key_msg2sp: invalid mode=%u\n", - xisr->sadb_x_ipsecrequest_mode)); - key_freesp(newsp); + "key_msg2sp: Invalid msg length.\n")); + key_freesp(newsp, KEY_SADB_UNLOCKED); *error = EINVAL; return NULL; } - (*p_isr)->saidx.mode = xisr->sadb_x_ipsecrequest_mode; - - switch (xisr->sadb_x_ipsecrequest_level) { - case IPSEC_LEVEL_DEFAULT: - case IPSEC_LEVEL_USE: - case IPSEC_LEVEL_REQUIRE: - break; - case IPSEC_LEVEL_UNIQUE: - /* validity check */ - /* - * If range violation of reqid, kernel will - * update it, don't refuse it. - */ - if (xisr->sadb_x_ipsecrequest_reqid - > IPSEC_MANUAL_REQID_MAX) { + + tlen = PFKEY_EXTLEN(xpl0) - sizeof(*xpl0); + xisr = (struct sadb_x_ipsecrequest *)(xpl0 + 1); + + while (tlen > 0) { + + /* length check */ + if (xisr->sadb_x_ipsecrequest_len < sizeof(*xisr)) { + ipseclog((LOG_DEBUG, "key_msg2sp: " + "invalid ipsecrequest length.\n")); + key_freesp(newsp, KEY_SADB_UNLOCKED); + *error = EINVAL; + return NULL; + } + + /* allocate request buffer */ + KMALLOC_WAIT(*p_isr, struct ipsecrequest *, sizeof(**p_isr)); + if ((*p_isr) == NULL) { ipseclog((LOG_DEBUG, - "key_msg2sp: reqid=%d range " - "violation, updated by kernel.\n", - xisr->sadb_x_ipsecrequest_reqid)); - xisr->sadb_x_ipsecrequest_reqid = 0; + "key_msg2sp: No more memory.\n")); + key_freesp(newsp, KEY_SADB_UNLOCKED); + *error = ENOBUFS; + return NULL; } - - /* allocate new reqid id if reqid is zero. */ - if (xisr->sadb_x_ipsecrequest_reqid == 0) { - u_int32_t reqid; - if ((reqid = key_newreqid()) == 0) { - key_freesp(newsp); - *error = ENOBUFS; + bzero(*p_isr, sizeof(**p_isr)); + + /* set values */ + (*p_isr)->next = 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_SADB_UNLOCKED); + *error = EPROTONOSUPPORT; return NULL; - } - (*p_isr)->saidx.reqid = reqid; - xisr->sadb_x_ipsecrequest_reqid = reqid; - } else { - /* set it for manual keying. */ - (*p_isr)->saidx.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); - *error = EINVAL; - return NULL; - } - (*p_isr)->level = xisr->sadb_x_ipsecrequest_level; - - /* set IP addresses if there */ - if (xisr->sadb_x_ipsecrequest_len > sizeof(*xisr)) { - struct sockaddr *paddr; - - paddr = (struct sockaddr *)(xisr + 1); - - /* validity check */ - if (paddr->sa_len - > sizeof((*p_isr)->saidx.src)) { - ipseclog((LOG_DEBUG, "key_msg2sp: invalid request " - "address length.\n")); - key_freesp(newsp); - *error = EINVAL; - return NULL; + (*p_isr)->saidx.proto = xisr->sadb_x_ipsecrequest_proto; + + switch (xisr->sadb_x_ipsecrequest_mode) { + case IPSEC_MODE_TRANSPORT: + case IPSEC_MODE_TUNNEL: + break; + case IPSEC_MODE_ANY: + default: + ipseclog((LOG_DEBUG, + "key_msg2sp: invalid mode=%u\n", + xisr->sadb_x_ipsecrequest_mode)); + key_freesp(newsp, KEY_SADB_UNLOCKED); + *error = EINVAL; + return NULL; } - bcopy(paddr, &(*p_isr)->saidx.src, - paddr->sa_len); - - paddr = (struct sockaddr *)((caddr_t)paddr - + paddr->sa_len); - + (*p_isr)->saidx.mode = xisr->sadb_x_ipsecrequest_mode; + + switch (xisr->sadb_x_ipsecrequest_level) { + case IPSEC_LEVEL_DEFAULT: + case IPSEC_LEVEL_USE: + case IPSEC_LEVEL_REQUIRE: + break; + case IPSEC_LEVEL_UNIQUE: + /* validity check */ + /* + * If range violation of reqid, kernel will + * update it, don't refuse it. + */ + if (xisr->sadb_x_ipsecrequest_reqid + > IPSEC_MANUAL_REQID_MAX) { + ipseclog((LOG_DEBUG, + "key_msg2sp: reqid=%d range " + "violation, updated by kernel.\n", + xisr->sadb_x_ipsecrequest_reqid)); + xisr->sadb_x_ipsecrequest_reqid = 0; + } + + /* allocate new reqid id if reqid is zero. */ + if (xisr->sadb_x_ipsecrequest_reqid == 0) { + u_int32_t reqid; + if ((reqid = key_newreqid()) == 0) { + 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. */ + (*p_isr)->saidx.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, KEY_SADB_UNLOCKED); + *error = EINVAL; + return NULL; + } + (*p_isr)->level = xisr->sadb_x_ipsecrequest_level; + + /* set IP addresses if there */ + if (xisr->sadb_x_ipsecrequest_len > sizeof(*xisr)) { + struct sockaddr *paddr; + + paddr = (struct sockaddr *)(xisr + 1); + + /* validity check */ + if (paddr->sa_len + > sizeof((*p_isr)->saidx.src)) { + ipseclog((LOG_DEBUG, "key_msg2sp: invalid request " + "address length.\n")); + key_freesp(newsp, KEY_SADB_UNLOCKED); + *error = EINVAL; + return NULL; + } + bcopy(paddr, &(*p_isr)->saidx.src, + paddr->sa_len); + + paddr = (struct sockaddr *)((caddr_t)paddr + + paddr->sa_len); + + /* validity check */ + if (paddr->sa_len + > sizeof((*p_isr)->saidx.dst)) { + ipseclog((LOG_DEBUG, "key_msg2sp: invalid request " + "address length.\n")); + key_freesp(newsp, KEY_SADB_UNLOCKED); + *error = EINVAL; + return NULL; + } + bcopy(paddr, &(*p_isr)->saidx.dst, + paddr->sa_len); + } + + (*p_isr)->sp = newsp; + + /* initialization for the next. */ + p_isr = &(*p_isr)->next; + tlen -= xisr->sadb_x_ipsecrequest_len; + /* validity check */ - if (paddr->sa_len - > sizeof((*p_isr)->saidx.dst)) { - ipseclog((LOG_DEBUG, "key_msg2sp: invalid request " - "address length.\n")); - key_freesp(newsp); + if (tlen < 0) { + ipseclog((LOG_DEBUG, "key_msg2sp: becoming tlen < 0.\n")); + key_freesp(newsp, KEY_SADB_UNLOCKED); *error = EINVAL; return NULL; } - bcopy(paddr, &(*p_isr)->saidx.dst, - paddr->sa_len); - } - - (*p_isr)->sav = NULL; - (*p_isr)->sp = newsp; - - /* initialization for the next. */ - p_isr = &(*p_isr)->next; - tlen -= xisr->sadb_x_ipsecrequest_len; - - /* validity check */ - if (tlen < 0) { - ipseclog((LOG_DEBUG, "key_msg2sp: becoming tlen < 0.\n")); - key_freesp(newsp); - *error = EINVAL; - return NULL; + + xisr = (struct sadb_x_ipsecrequest *)(void *) + ((caddr_t)xisr + xisr->sadb_x_ipsecrequest_len); } - - xisr = (struct sadb_x_ipsecrequest *)((caddr_t)xisr - + xisr->sadb_x_ipsecrequest_len); - } } - break; - default: - ipseclog((LOG_DEBUG, "key_msg2sp: invalid policy type.\n")); - key_freesp(newsp); - *error = EINVAL; - return NULL; + break; + default: + ipseclog((LOG_DEBUG, "key_msg2sp: invalid policy type.\n")); + key_freesp(newsp, KEY_SADB_UNLOCKED); + *error = EINVAL; + return NULL; } - + *error = 0; return newsp; } static u_int32_t -key_newreqid() +key_newreqid(void) { + lck_mtx_lock(sadb_mutex); static u_int32_t auto_reqid = IPSEC_MANUAL_REQID_MAX + 1; - - lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - - auto_reqid = (auto_reqid == ~0 - ? IPSEC_MANUAL_REQID_MAX + 1 : auto_reqid + 1); - - /* XXX should be unique check */ - + int done = 0; + + /* 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 */ + + 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; } @@ -1632,84 +1980,82 @@ key_newreqid() * 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; caddr_t p; struct mbuf *m; - - lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - + /* sanity check. */ if (sp == NULL) panic("key_sp2msg: NULL pointer was passed.\n"); - + tlen = key_getspreqmsglen(sp); - + m = key_alloc_mbuf(tlen); if (!m || m->m_next) { /*XXX*/ if (m) m_freem(m); return NULL; } - + m->m_len = tlen; m->m_next = NULL; xpl = mtod(m, struct sadb_x_policy *); bzero(xpl, tlen); - + xpl->sadb_x_policy_len = PFKEY_UNIT64(tlen); xpl->sadb_x_policy_exttype = SADB_X_EXT_POLICY; xpl->sadb_x_policy_type = sp->policy; xpl->sadb_x_policy_dir = sp->spidx.dir; xpl->sadb_x_policy_id = sp->id; p = (caddr_t)xpl + sizeof(*xpl); - + /* if is the policy for ipsec ? */ if (sp->policy == IPSEC_POLICY_IPSEC) { struct sadb_x_ipsecrequest *xisr; 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; - + p += sizeof(*xisr); bcopy(&isr->saidx.src, p, isr->saidx.src.ss_len); p += isr->saidx.src.ss_len; bcopy(&isr->saidx.dst, p, isr->saidx.dst.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); } } - + return m; } /* 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) panic("null pointer passed to key_gather"); - + for (i = 0; i < nitem; i++) { idx = items[i]; if (idx < 0 || idx > SADB_EXT_MAX) @@ -1720,20 +2066,16 @@ key_gather_mbuf(struct mbuf *m, const struct sadb_msghdr *mhp, 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); + 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), - mtod(n, caddr_t)); + mtod(n, caddr_t)); } else if (i < ndeep) { len = mhp->extlen[idx]; n = key_alloc_mbuf(len); @@ -1743,28 +2085,28 @@ key_gather_mbuf(struct mbuf *m, const struct sadb_msghdr *mhp, goto fail; } m_copydata(m, mhp->extoff[idx], mhp->extlen[idx], - mtod(n, caddr_t)); + mtod(n, caddr_t)); } else { n = m_copym(m, mhp->extoff[idx], mhp->extlen[idx], - M_DONTWAIT); + M_WAITOK); } if (n == NULL) goto fail; - + if (result) m_cat(result, n); else result = n; } - + if ((result->m_flags & M_PKTHDR) != 0) { result->m_pkthdr.len = 0; for (n = result; n; n = n->m_next) result->m_pkthdr.len += n->m_len; } - + return result; - + fail: m_freem(result); return NULL; @@ -1787,33 +2129,52 @@ fail: * 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, *dst1; 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; - - lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - + 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_NOTOWNED); + /* sanity check */ 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); @@ -1824,80 +2185,152 @@ key_spdadd(so, m, mhp) 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]; + lft = (struct sadb_lifetime *) + (void *)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]; - - /* 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. */ + 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); + } + } + + 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]; + + /* 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: - break; - default: - ipseclog((LOG_DEBUG, "key_spdadd: Invalid SP direction.\n")); - mhp->msg->sadb_msg_errno = EINVAL; - return 0; - } - - /* check policy */ + case IPSEC_DIR_INBOUND: + case IPSEC_DIR_OUTBOUND: + break; + default: + ipseclog((LOG_DEBUG, "key_spdadd: Invalid SP direction.\n")); + mhp->msg->sadb_msg_errno = EINVAL; + return 0; + } + + /* 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, @@ -1905,52 +2338,92 @@ key_spdadd(so, m, mhp) 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); - - /* 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); - } + #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; - + + 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) ipsec_bypass = 0; - + /* delete the entry in spacqtree */ if (mhp->msg->sadb_msg_type == SADB_X_SPDUPDATE) { struct secspacq *spacq; @@ -1960,52 +2433,56 @@ key_spdadd(so, m, mhp) spacq->created = tv.tv_sec; spacq->count = 0; } - } - + } + lck_mtx_unlock(sadb_mutex); + { - 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); - - if (n->m_len < sizeof(*newmsg)) { - n = m_pullup(n, sizeof(*newmsg)); + 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; - - m_freem(m); - return key_sendup_mbuf(so, n, KEY_SENDUP_ALL); + + 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; + 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 *)(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); } } @@ -2016,29 +2493,28 @@ key_spdadd(so, m, mhp) * others: success. */ static u_int32_t -key_getnewspid() +key_getnewspid(void) { u_int32_t newid = 0; 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; } - + return newid; } @@ -2055,39 +2531,82 @@ key_getnewspid() * 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, *dst1; struct sadb_x_policy *xpl0; struct secpolicyindex spidx; struct secpolicy *sp; - - lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - + 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_NOTOWNED); + /* sanity check */ 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]; + + /* checking the direction. */ + switch (xpl0->sadb_x_policy_dir) { + case IPSEC_DIR_INBOUND: + case IPSEC_DIR_OUTBOUND: + break; + default: + ipseclog((LOG_DEBUG, "key_spddelete: Invalid SP direction.\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); + } + } + /* make secindex */ /* XXX boundary check against sa_len */ KEY_SETSECSPIDX(xpl0->sadb_x_policy_dir, @@ -2096,47 +2615,57 @@ key_spddelete(so, m, mhp) 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 the direciton. */ - switch (xpl0->sadb_x_policy_dir) { - case IPSEC_DIR_INBOUND: - case IPSEC_DIR_OUTBOUND: - break; - default: - ipseclog((LOG_DEBUG, "key_spddelete: Invalid SP direction.\n")); - return key_senderror(so, m, EINVAL); - } - + /* 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); - - 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); + 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); + + m_freem(m); + return key_sendup_mbuf(so, n, KEY_SENDUP_ALL); } } @@ -2153,88 +2682,212 @@ key_spddelete(so, m, mhp) * 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) 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)) { ipseclog((LOG_DEBUG, "key_spddelete2: invalid message is passed.\n")); key_senderror(so, m, EINVAL); 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; - - /* 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; + struct mbuf *n, *nn; + struct sadb_msg *newmsg; + int off, len; + + /* 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_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); - - 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)); - + if (!n) + return key_senderror(so, m, ENOBUFS); + + 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)); + #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_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; + newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len); + + m_freem(m); + return key_sendup_mbuf(so, n, KEY_SENDUP_ALL); + } +} - 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); +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"); + + 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; } + + 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_spdenable: no SP found id:%u.\n", id)); + return key_senderror(so, m, EINVAL); + } + + sp->disabled = 0; + 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; + newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len); + + m_freem(m); + return key_sendup_mbuf(so, n, KEY_SENDUP_ALL); + } +} - 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; - newmsg->sadb_msg_len = 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; + 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; + newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len); + + m_freem(m); + return key_sendup_mbuf(so, n, KEY_SENDUP_ALL); } } @@ -2251,35 +2904,38 @@ key_spddelete2(so, m, mhp) * 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) 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)) { ipseclog((LOG_DEBUG, "key_spdget: invalid message is passed.\n")); 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); if (n != NULL) { m_freem(m); @@ -2304,15 +2960,15 @@ key_spdget(so, m, mhp) * 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) panic("key_spdacquire: NULL pointer is passed.\n"); @@ -2320,8 +2976,9 @@ key_spdacquire(sp) panic("key_spdacquire: called but there is request.\n"); 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); if ((newspacq = key_getspacq(&sp->spidx)) != NULL) { if (key_blockacq_count < newspacq->count) { /* reset counter and do send message. */ @@ -2329,17 +2986,20 @@ key_spdacquire(sp) } 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) { + lck_mtx_unlock(sadb_mutex); return ENOBUFS; - + } /* 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) { @@ -2347,16 +3007,16 @@ key_spdacquire(sp) goto fail; } result = m; - + 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); - + PFKEY_UNIT64(result->m_pkthdr.len); + return key_sendup_mbuf(NULL, m, KEY_SENDUP_REGISTERED); - + fail: if (result) m_freem(result); @@ -2376,35 +3036,35 @@ fail: * 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) panic("key_spdflush: NULL pointer is passed.\n"); - + 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) m_freem(m->m_next); m->m_next = NULL; @@ -2412,7 +3072,7 @@ key_spdflush(so, m, mhp) newmsg = mtod(m, struct sadb_msg *); newmsg->sadb_msg_errno = 0; newmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len); - + return key_sendup_mbuf(so, m, KEY_SENDUP_ALL); } @@ -2427,101 +3087,169 @@ key_spdflush(so, m, mhp) * * 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; + int cnt = 0, bufcount; 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) panic("key_spddump: NULL pointer is passed.\n"); - - /* search SPD entry and get buffer size. */ - cnt = 0; + + if ((bufcount = ipsec_policy_count) == 0) { + error = ENOENT; + goto end; + } + bufcount += 256; /* extra */ + KMALLOC_WAIT(spbuf, struct secpolicy**, bufcount * sizeof(struct secpolicy*)); + 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++; } } - - if (cnt == 0) - return key_senderror(so, m, ENOENT); - - 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); - - if (n) - key_sendup_mbuf(so, n, KEY_SENDUP_ONE); - } + lck_mtx_unlock(sadb_mutex); + + if (cnt == 0) { + error = ENOENT; + goto end; } - + + 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); + } + + 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 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) 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); - + + 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); + } + + 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) result->m_pkthdr.len += m->m_len; - + mtod(result, struct sadb_msg *)->sadb_msg_len = - PFKEY_UNIT64(result->m_pkthdr.len); - + PFKEY_UNIT64(result->m_pkthdr.len); + return result; - + fail: m_freem(result); return NULL; @@ -2531,33 +3259,31 @@ fail: * 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) return tlen; - + /* get length of ipsec requests */ { - struct ipsecrequest *isr; - int len; - - for (isr = sp->req; isr != NULL; isr = isr->next) { - len = sizeof(struct sadb_x_ipsecrequest) + 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; - - tlen += PFKEY_ALIGN8(len); - } + + tlen += PFKEY_ALIGN8(len); + } } - + return tlen; } @@ -2571,21 +3297,20 @@ key_getspreqmsglen(sp) * 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) panic("key_spdexpire: NULL pointer is passed.\n"); - + /* set msg header */ m = key_setsadbmsg(SADB_X_SPDEXPIRE, 0, 0, 0, 0, 0); if (!m) { @@ -2593,7 +3318,7 @@ key_spdexpire(sp) goto fail; } result = m; - + /* create lifetime extension (current and hard) */ len = PFKEY_ALIGN8(sizeof(*lt)) * 2; m = key_alloc_mbuf(len); @@ -2611,7 +3336,7 @@ key_spdexpire(sp) 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; @@ -2619,40 +3344,80 @@ key_spdexpire(sp) lt->sadb_lifetime_addtime = sp->lifetime; 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); + + /* 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); + } + + /* 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); + } + + /* set secpolicy */ + m = key_sp2msg(sp); if (!m) { error = ENOBUFS; goto fail; } 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; - } - m_cat(result, m); - - /* set secpolicy */ - m = key_sp2msg(sp); - if (!m) { - error = ENOBUFS; - goto fail; - } - m_cat(result, m); - + if ((result->m_flags & M_PKTHDR) == 0) { error = EINVAL; goto fail; } - + if (result->m_len < sizeof(struct sadb_msg)) { result = m_pullup(result, sizeof(struct sadb_msg)); if (result == NULL) { @@ -2660,17 +3425,17 @@ key_spdexpire(sp) goto fail; } } - + 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); - + PFKEY_UNIT64(result->m_pkthdr.len); + return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED); - - fail: + +fail: if (result) m_freem(result); return error; @@ -2683,26 +3448,55 @@ key_spdexpire(sp) * 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) { struct secashead *newsah; - - lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - + /* sanity check */ if (saidx == NULL) panic("key_newsaidx: NULL pointer is passed.\n"); - + newsah = keydb_newsecashead(); 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); + key_start_timehandler(); return(newsah); } @@ -2710,70 +3504,74 @@ key_newsah(saidx) /* * 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); - + /* sanity check */ if (sah == NULL) panic("key_delsah: NULL pointer is passed.\n"); - - s = splnet(); /*called from softclock()*/ - + /* searching all SA registerd in the secindex. */ for (stateidx = 0; stateidx < _ARRAYLEN(saorder_state_any); stateidx++) { - + state = saorder_state_any[stateidx]; for (sav = (struct secasvar *)LIST_FIRST(&sah->savtree[state]); sav != NULL; sav = nextsav) { - + nextsav = LIST_NEXT(sav, chain); - + if (sav->refcnt > 0) { /* give up to delete this sa */ zombie++; continue; } - + /* sanity check */ KEY_CHKSASTATE(state, sav->state, "key_delsah"); - - key_freesav(sav); - + + key_freesav(sav, KEY_SADB_LOCKED); + /* remove back pointer */ sav->sah = NULL; sav = NULL; } } - + /* don't delete sah only if there are savs. */ - if (zombie) { - splx(s); + if (zombie) return; + + ROUTE_RELEASE(&sah->sa_route); + + if (sah->ipsec_if) { + ifnet_release(sah->ipsec_if); + sah->ipsec_if = NULL; } - - if (sah->sa_route.ro_rt) { - rtfree(sah->sa_route.ro_rt); - sah->sa_route.ro_rt = (struct rtentry *)NULL; - } - + + if (sah->idents) { + KFREE(sah->idents); + } + + if (sah->identd) { + KFREE(sah->identd); + } + /* remove from tree of SA index */ if (__LIST_CHAINED(sah)) LIST_REMOVE(sah, chain); - + KFREE(sah); - - splx(s); + return; } @@ -2790,114 +3588,296 @@ key_delsah(sah) * 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); - + /* sanity check */ 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); - + case SADB_GETSPI: + key_setspi(newsav, 0); + #if IPSEC_DOSEQCHECK - /* sync sequence number */ - if (mhp->msg->sadb_msg_seq == 0) - newsav->seq = + /* sync sequence number */ + if (mhp->msg->sadb_msg_seq == 0) + newsav->seq = (acq_seq = (acq_seq == ~0 ? 1 : ++acq_seq)); - else + else #endif + newsav->seq = mhp->msg->sadb_msg_seq; + break; + + case SADB_ADD: + /* sanity check */ + if (mhp->ext[SADB_EXT_SA] == NULL) { + key_delsav(newsav); + ipseclog((LOG_DEBUG, "key_newsa: invalid message is passed.\n")); + *errp = EINVAL; + return NULL; + } + 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; - - case SADB_ADD: - /* sanity check */ - if (mhp->ext[SADB_EXT_SA] == NULL) { - KFREE(newsav); - ipseclog((LOG_DEBUG, "key_newsa: invalid message is passed.\n")); + break; + default: + 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; } - xsa = (const struct sadb_sa *)mhp->ext[SADB_EXT_SA]; - key_setspi(newsav, xsa->sadb_sa_spi); - newsav->seq = mhp->msg->sadb_msg_seq; - break; - default: - KFREE(newsav); - *errp = EINVAL; - return NULL; } - + /* 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; - + /* add to satree */ newsav->sah = sah; newsav->refcnt = 1; newsav->state = SADB_SASTATE_LARVAL; LIST_INSERT_TAIL(&sah->savtree[SADB_SASTATE_LARVAL], newsav, - secasvar, chain); + secasvar, chain); + ipsec_sav_count++; + + return newsav; +} +/* + * allocating a new SA with LARVAL state. key_add() and key_getspi() call, + * and copy the values passed into new buffer. + * When SAD message type is GETSPI: + * to set sequence number from acq_seq++, + * to set zero to SPI. + * not to call key_setsava(). + * OUT: NULL : fail + * others : pointer to new secasvar. + */ +struct secasvar * +key_newsav2(struct secashead *sah, + u_int8_t satype, + u_int8_t alg_auth, + u_int8_t alg_enc, + u_int32_t flags, + u_int8_t replay, + struct sadb_key *key_auth, + u_int16_t key_auth_len, + struct sadb_key *key_enc, + u_int16_t key_enc_len, + u_int16_t natt_port, + u_int32_t seq, + u_int32_t spi, + u_int32_t pid, + struct sadb_lifetime *lifetime_hard, + struct sadb_lifetime *lifetime_soft) +{ + struct secasvar *newsav; + + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); + + /* sanity check */ + if (sah == NULL) + panic("key_newsa: NULL pointer is passed.\n"); + + KMALLOC_NOWAIT(newsav, struct secasvar *, sizeof(struct secasvar)); + if (newsav == 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")); + return NULL; + } + } + bzero((caddr_t)newsav, sizeof(struct secasvar)); + +#if IPSEC_DOSEQCHECK + /* sync sequence number */ + if (seq == 0) + newsav->seq = (acq_seq = (acq_seq == ~0 ? 1 : ++acq_seq)); + else +#endif + newsav->seq = seq; + key_setspi(newsav, spi); + + if (key_setsaval2(newsav, + satype, + alg_auth, + alg_enc, + flags, + replay, + key_auth, + key_auth_len, + key_enc, + key_enc_len, + natt_port, + seq, + spi, + pid, + lifetime_hard, + lifetime_soft)) { + key_delsav(newsav); + return NULL; + } + + /* reset created */ + { + struct timeval tv; + microtime(&tv); + newsav->created = tv.tv_sec; + } + + newsav->pid = pid; + + /* add to satree */ + newsav->sah = sah; + newsav->refcnt = 1; + if (spi && key_auth && key_auth_len && key_enc && key_enc_len) { + newsav->state = SADB_SASTATE_MATURE; + LIST_INSERT_TAIL(&sah->savtree[SADB_SASTATE_MATURE], newsav, + secasvar, chain); + } else { + newsav->state = SADB_SASTATE_LARVAL; + LIST_INSERT_TAIL(&sah->savtree[SADB_SASTATE_LARVAL], newsav, + secasvar, chain); + } + ipsec_sav_count++; + return newsav; } +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; +} + /* * free() SA variable entry. */ -static void -key_delsav(sav) - struct secasvar *sav; +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); - + if (sav->key_auth != NULL) { bzero(_KEYBUF(sav->key_auth), _KEYLEN(sav->key_auth)); KFREE(sav->key_auth); @@ -2933,9 +3913,9 @@ key_delsav(sav) KFREE(sav->iv); sav->iv = NULL; } - + KFREE(sav); - + return; } @@ -2946,23 +3926,37 @@ key_delsav(sav) * others : found, pointer to a SA. */ static struct secashead * -key_getsah(saidx) - struct secasindex *saidx; +key_getsah(struct secasindex *saidx) { struct secashead *sah; - + 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; } - + 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); + if (!sah) { + return(key_newsah(saidx, NULL, 0, dir)); + } + return sah; +} + /* * check not to be duplicated SPI. * NOTE: this function is too slow due to searching all SAD. @@ -2971,21 +3965,21 @@ key_getsah(saidx) * 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); - + /* check address family */ if (saidx->src.ss_family != saidx->dst.ss_family) { ipseclog((LOG_DEBUG, "key_checkspidup: address family mismatched.\n")); return NULL; } - + /* check all SAD */ LIST_FOREACH(sav, &spihash[SPIHASH(spi)], spihash) { if (sav->spi != spi) @@ -2999,16 +3993,16 @@ key_checkspidup(saidx, spi) return sav; } } - + return NULL; } 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) LIST_REMOVE(sav, spihash); @@ -3023,13 +4017,14 @@ key_setspi(sav, spi) * 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) { @@ -3046,7 +4041,7 @@ key_getsavbyspi(sah, spi) } } } - + return match; } @@ -3059,23 +4054,23 @@ key_getsavbyspi(sah, spi) * 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; #endif int error = 0; struct timeval tv; - + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - + /* sanity check */ if (m == NULL || mhp == NULL || mhp->msg == NULL) panic("key_setsaval: NULL pointer is passed.\n"); - + /* initialization */ sav->replay = NULL; sav->key_auth = NULL; @@ -3088,18 +4083,19 @@ key_setsaval(sav, m, mhp) sav->lft_s = NULL; sav->remote_ike_port = 0; sav->natt_last_activity = natt_now; - + sav->natt_encapsulated_src_port = 0; + /* 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; goto fail; } - + sav->alg_auth = sa0->sadb_sa_auth; sav->alg_enc = sa0->sadb_sa_encrypt; sav->flags = sa0->sadb_sa_flags; @@ -3110,14 +4106,26 @@ key_setsaval(sav, m, mhp) */ 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->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); @@ -3128,15 +4136,15 @@ key_setsaval(sav, m, mhp) } } } - + /* Authentication keys */ if (mhp->ext[SADB_EXT_KEY_AUTH] != NULL) { const struct sadb_key *key0; int len; - + key0 = (const struct sadb_key *)mhp->ext[SADB_EXT_KEY_AUTH]; len = mhp->extlen[SADB_EXT_KEY_AUTH]; - + error = 0; if (len < sizeof(*key0)) { ipseclog((LOG_DEBUG, "key_setsaval: invalid auth key ext len. len = %d\n", len)); @@ -3144,22 +4152,22 @@ key_setsaval(sav, m, mhp) goto fail; } switch (mhp->msg->sadb_msg_satype) { - case SADB_SATYPE_AH: - case SADB_SATYPE_ESP: - if (len == PFKEY_ALIGN8(sizeof(struct sadb_key)) && - sav->alg_auth != SADB_X_AALG_NULL) + case SADB_SATYPE_AH: + case SADB_SATYPE_ESP: + if (len == PFKEY_ALIGN8(sizeof(struct sadb_key)) && + sav->alg_auth != SADB_X_AALG_NULL) + error = EINVAL; + break; + case SADB_X_SATYPE_IPCOMP: + default: error = EINVAL; - break; - case SADB_X_SATYPE_IPCOMP: - default: - error = EINVAL; - break; + break; } if (error) { ipseclog((LOG_DEBUG, "key_setsaval: invalid key_auth values.\n")); goto fail; } - + sav->key_auth = (struct sadb_key *)key_newbuf(key0, len); if (sav->key_auth == NULL) { ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n")); @@ -3167,15 +4175,15 @@ key_setsaval(sav, m, mhp) goto fail; } } - + /* Encryption key */ if (mhp->ext[SADB_EXT_KEY_ENCRYPT] != NULL) { const struct sadb_key *key0; int len; - + key0 = (const struct sadb_key *)mhp->ext[SADB_EXT_KEY_ENCRYPT]; len = mhp->extlen[SADB_EXT_KEY_ENCRYPT]; - + error = 0; if (len < sizeof(*key0)) { ipseclog((LOG_DEBUG, "key_setsaval: invalid encryption key ext len. len = %d\n", len)); @@ -3183,132 +4191,145 @@ key_setsaval(sav, m, mhp) goto fail; } switch (mhp->msg->sadb_msg_satype) { - 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")); - error = EINVAL; + 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")); + error = EINVAL; + break; + } + sav->key_enc = (struct sadb_key *)key_newbuf(key0, len); + if (sav->key_enc == NULL) { + ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n")); + error = ENOBUFS; + goto fail; + } break; - } - sav->key_enc = (struct sadb_key *)key_newbuf(key0, len); - if (sav->key_enc == NULL) { - ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n")); - error = ENOBUFS; - goto fail; - } - break; - case SADB_X_SATYPE_IPCOMP: - if (len != PFKEY_ALIGN8(sizeof(struct sadb_key))) + 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; - sav->key_enc = NULL; /*just in case*/ - break; - case SADB_SATYPE_AH: - default: - error = EINVAL; - break; + break; } if (error) { ipseclog((LOG_DEBUG, "key_setsaval: invalid key_enc value.\n")); goto fail; } } - + /* set iv */ sav->ivlen = 0; - + switch (mhp->msg->sadb_msg_satype) { - case SADB_SATYPE_ESP: + case SADB_SATYPE_ESP: #if IPSEC_ESP - algo = esp_algorithm_lookup(sav->alg_enc); - if (algo && algo->ivlen) - sav->ivlen = (*algo->ivlen)(algo, sav); - if (sav->ivlen == 0) + algo = esp_algorithm_lookup(sav->alg_enc); + if (algo && algo->ivlen) + sav->ivlen = (*algo->ivlen)(algo, sav); + if (sav->ivlen == 0) + break; + KMALLOC_NOWAIT(sav->iv, caddr_t, sav->ivlen); + if (sav->iv == 0) { + 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); +#endif break; - KMALLOC(sav->iv, caddr_t, sav->ivlen); - if (sav->iv == 0) { - ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n")); - error = ENOBUFS; + case SADB_SATYPE_AH: + case SADB_X_SATYPE_IPCOMP: + break; + default: + ipseclog((LOG_DEBUG, "key_setsaval: invalid SA type.\n")); + error = EINVAL; goto fail; - } - - /* initialize */ - 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")); - error = EINVAL; - goto fail; } - + /* reset created */ microtime(&tv); sav->created = tv.tv_sec; - + /* make lifetime for CURRENT */ - KMALLOC(sav->lft_c, struct sadb_lifetime *, - sizeof(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_len = - PFKEY_UNIT64(sizeof(struct sadb_lifetime)); + PFKEY_UNIT64(sizeof(struct sadb_lifetime)); sav->lft_c->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT; sav->lft_c->sadb_lifetime_allocations = 0; sav->lft_c->sadb_lifetime_bytes = 0; sav->lft_c->sadb_lifetime_addtime = tv.tv_sec; sav->lft_c->sadb_lifetime_usetime = 0; - + /* lifetimes for HARD and SOFT */ { - 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; - } - /* 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; + const struct sadb_lifetime *lft0; + + 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 ? */ } - 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: + +fail: /* initialization */ if (sav->replay != NULL) { keydb_delsecreplay(sav->replay); @@ -3345,141 +4366,361 @@ key_setsaval(sav, m, mhp) KFREE(sav->lft_s); sav->lft_s = NULL; } - + return error; } /* - * validation with a secasvar entry, and set SADB_SATYPE_MATURE. - * OUT: 0: valid - * other: errno + * copy SA values from PF_KEY message except *SPI, SEQ, PID, STATE and TYPE*. + * You must update these if need. + * OUT: 0: success. + * !0: failure. + * + * does not modify mbuf. does not free mbuf on error. */ -static int -key_mature(sav) - struct secasvar *sav; +int +key_setsaval2(struct secasvar *sav, + u_int8_t satype, + u_int8_t alg_auth, + u_int8_t alg_enc, + u_int32_t flags, + u_int8_t replay, + struct sadb_key *key_auth, + u_int16_t key_auth_len, + struct sadb_key *key_enc, + u_int16_t key_enc_len, + u_int16_t natt_port, + u_int32_t seq, + u_int32_t spi, + u_int32_t pid, + struct sadb_lifetime *lifetime_hard, + struct sadb_lifetime *lifetime_soft) { - 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 */ - - mature = 0; - +#if IPSEC_ESP + const struct esp_algorithm *algo; +#endif + int error = 0; + struct timeval tv; + 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) { - ipseclog((LOG_DEBUG, - "key_mature: illegal range of SPI %u.\n", - (u_int32_t)ntohl(sav->spi))); - return EINVAL; + + /* 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; + sav->natt_last_activity = natt_now; + sav->natt_encapsulated_src_port = 0; + + sav->alg_auth = alg_auth; + sav->alg_enc = alg_enc; + sav->flags = flags; + sav->pid = pid; + sav->seq = seq; + key_setspi(sav, htonl(spi)); + + /* + * Verify that a nat-traversal port was specified if + * the nat-traversal flag is set. + */ + if ((sav->flags & SADB_X_EXT_NATT) != 0) { + if (natt_port == 0) { + ipseclog((LOG_DEBUG, "key_setsaval2: natt port not set.\n")); + error = EINVAL; + goto fail; } - break; + sav->remote_ike_port = natt_port; } - - /* check satype */ - switch (sav->sah->saidx.proto) { - case IPPROTO_ESP: - /* check flags */ - if ((sav->flags & SADB_X_EXT_OLD) - && (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) - checkmask = 1; - else - checkmask = 3; - mustmask = 1; - break; - case IPPROTO_AH: - /* check flags */ - if (sav->flags & SADB_X_EXT_DERIV) { - ipseclog((LOG_DEBUG, "key_mature: " - "invalid flag (derived) given to AH SA.\n")); - return EINVAL; + + /* + * 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 ((flags & SADB_X_EXT_OLD) == 0) { + sav->replay = keydb_newsecreplay(replay); + if (sav->replay == NULL) { + ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n")); + error = ENOBUFS; + goto fail; } - if (sav->alg_enc != SADB_EALG_NONE) { - ipseclog((LOG_DEBUG, "key_mature: " - "protocol and algorithm mismated.\n")); - 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; } - - /* check authentication algorithm */ - if ((checkmask & 2) != 0) { - const struct ah_algorithm *algo; - int keylen; - - algo = ah_algorithm_lookup(sav->alg_auth); - if (!algo) { - ipseclog((LOG_DEBUG,"key_mature: " - "unknown authentication algorithm.\n")); - return EINVAL; - } - - /* algorithm-dependent check */ - if (sav->key_auth) - keylen = sav->key_auth->sadb_key_bits; - else - keylen = 0; - if (keylen < algo->keymin || algo->keymax < keylen) { - ipseclog((LOG_DEBUG, - "key_mature: invalid AH key length %d " - "(%d-%d allowed)\n", - keylen, algo->keymin, algo->keymax)); - return EINVAL; - } - - if (algo->mature) { - if ((*algo->mature)(sav)) { - /* message generated in per-algorithm function*/ - return EINVAL; - } else - 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; - } + + /* Authentication keys */ + sav->key_auth = (__typeof__(sav->key_auth))key_newbuf(key_auth, key_auth_len); + if (sav->key_auth == NULL) { + ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n")); + error = ENOBUFS; + goto fail; } - - /* check encryption algorithm */ - if ((checkmask & 1) != 0) { + + /* Encryption key */ + sav->key_enc = (__typeof__(sav->key_enc))key_newbuf(key_enc, key_enc_len); + if (sav->key_enc == NULL) { + ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n")); + error = ENOBUFS; + goto fail; + } + + /* set iv */ + sav->ivlen = 0; + + if (satype == SADB_SATYPE_ESP) { #if IPSEC_ESP - const struct esp_algorithm *algo; - int keylen; + algo = esp_algorithm_lookup(sav->alg_enc); + if (algo && algo->ivlen) + sav->ivlen = (*algo->ivlen)(algo, sav); + if (sav->ivlen != 0) { + KMALLOC_NOWAIT(sav->iv, caddr_t, sav->ivlen); + if (sav->iv == 0) { + 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); + } +#endif + } + + /* reset created */ + microtime(&tv); + sav->created = tv.tv_sec; + + /* make lifetime for CURRENT */ + KMALLOC_NOWAIT(sav->lft_c, struct sadb_lifetime *, + sizeof(struct sadb_lifetime)); + if (sav->lft_c == NULL) { + 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_len = + PFKEY_UNIT64(sizeof(struct sadb_lifetime)); + sav->lft_c->sadb_lifetime_exttype = SADB_EXT_LIFETIME_CURRENT; + sav->lft_c->sadb_lifetime_allocations = 0; + sav->lft_c->sadb_lifetime_bytes = 0; + sav->lft_c->sadb_lifetime_addtime = tv.tv_sec; + sav->lft_c->sadb_lifetime_usetime = 0; + + /* lifetimes for HARD and SOFT */ + sav->lft_h = (__typeof__(sav->lft_h))key_newbuf(lifetime_hard, + sizeof(*lifetime_hard)); + if (sav->lft_h == NULL) { + ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n")); + error = ENOBUFS; + goto fail; + } + sav->lft_s = (__typeof__(sav->lft_s))key_newbuf(lifetime_soft, + sizeof(*lifetime_soft)); + if (sav->lft_s == NULL) { + ipseclog((LOG_DEBUG, "key_setsaval: No more memory.\n")); + error = ENOBUFS; + goto fail; + } + + 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; + } + + return error; +} +/* + * validation with a secasvar entry, and set SADB_SATYPE_MATURE. + * OUT: 0: valid + * other: errno + */ +static int +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 */ + + mature = 0; + + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); + + /* check SPI value */ + switch (sav->sah->saidx.proto) { + case IPPROTO_ESP: + case IPPROTO_AH: + + /* 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))); + return EINVAL; + } + break; + } + + /* check satype */ + switch (sav->sah->saidx.proto) { + case IPPROTO_ESP: + /* check flags */ + if ((sav->flags & SADB_X_EXT_OLD) + && (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) + checkmask = 1; + else + checkmask = 3; + mustmask = 1; + break; + case IPPROTO_AH: + /* check flags */ + if (sav->flags & SADB_X_EXT_DERIV) { + ipseclog((LOG_DEBUG, "key_mature: " + "invalid flag (derived) given to AH SA.\n")); + return EINVAL; + } + if (sav->alg_enc != SADB_EALG_NONE) { + ipseclog((LOG_DEBUG, "key_mature: " + "protocol and algorithm mismated.\n")); + 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; + } + + /* check authentication algorithm */ + if ((checkmask & 2) != 0) { + const struct ah_algorithm *algo; + int keylen; + + algo = ah_algorithm_lookup(sav->alg_auth); + if (!algo) { + ipseclog((LOG_DEBUG,"key_mature: " + "unknown authentication algorithm.\n")); + return EINVAL; + } + + /* algorithm-dependent check */ + if (sav->key_auth) + keylen = sav->key_auth->sadb_key_bits; + else + keylen = 0; + if (keylen < algo->keymin || algo->keymax < keylen) { + ipseclog((LOG_DEBUG, + "key_mature: invalid AH key length %d " + "(%d-%d allowed)\n", + keylen, algo->keymin, algo->keymax)); + return EINVAL; + } + + if (algo->mature) { + if ((*algo->mature)(sav)) { + /* message generated in per-algorithm function*/ + return EINVAL; + } else + 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; + } + } + + /* check encryption algorithm */ + if ((checkmask & 1) != 0) { +#if IPSEC_ESP + const struct esp_algorithm *algo; + int keylen; + algo = esp_algorithm_lookup(sav->alg_enc); if (!algo) { ipseclog((LOG_DEBUG, "key_mature: unknown encryption algorithm.\n")); return EINVAL; } - + /* algorithm-dependent check */ if (sav->key_enc) keylen = sav->key_enc->sadb_key_bits; @@ -3487,12 +4728,12 @@ key_mature(sav) keylen = 0; if (keylen < algo->keymin || algo->keymax < keylen) { ipseclog((LOG_DEBUG, - "key_mature: invalid ESP key length %d " - "(%d-%d allowed)\n", - keylen, algo->keymin, algo->keymax)); + "key_mature: invalid ESP key length %d " + "(%d-%d allowed)\n", + keylen, algo->keymin, algo->keymax)); return EINVAL; } - + if (algo->mature) { if ((*algo->mature)(sav)) { /* message generated in per-algorithm function*/ @@ -3500,7 +4741,7 @@ key_mature(sav) } else 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; @@ -3510,11 +4751,11 @@ key_mature(sav) 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) { @@ -3522,9 +4763,9 @@ key_mature(sav) return EINVAL; } } - + key_sa_chgstate(sav, SADB_SASTATE_MATURE); - + return 0; } @@ -3532,10 +4773,12 @@ key_mature(sav) * 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; @@ -3549,96 +4792,95 @@ key_setdumpsa(sav, type, satype, seq, pid) SADB_EXT_KEY_ENCRYPT, SADB_EXT_IDENTITY_SRC, 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) goto fail; result = m; - + 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) - 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) - 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) - 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) - goto fail; - break; - - case SADB_EXT_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) - continue; - l = PFKEY_UNUNIT64(sav->key_enc->sadb_key_len); - p = sav->key_enc; - break; - - case SADB_EXT_LIFETIME_CURRENT: - 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) - 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) + case SADB_EXT_SA: + m = key_setsadbsa(sav); + 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, + 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) + 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) + goto fail; + break; + + case SADB_EXT_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) + continue; + l = PFKEY_UNUNIT64(sav->key_enc->sadb_key_len); + p = sav->key_enc; + break; + + case SADB_EXT_LIFETIME_CURRENT: + 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) + 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) + 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 ? */ + case SADB_EXT_SENSITIVITY: + default: 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 ? */ - case SADB_EXT_SENSITIVITY: - default: - continue; } - + if ((!m && !p) || (m && p)) goto fail; if (p && tres) { - M_PREPEND(tres, l, M_DONTWAIT); + M_PREPEND(tres, l, M_WAITOK, 1); if (!tres) goto fail; bcopy(p, mtod(tres, caddr_t), l); @@ -3650,29 +4892,36 @@ key_setdumpsa(sav, type, satype, seq, pid) goto fail; m_copyback(m, 0, l, p); } - + 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) goto fail; } - + 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); - + PFKEY_UNIT64(result->m_pkthdr.len); + return result; - + fail: m_freem(result); m_freem(tres); @@ -3683,17 +4932,18 @@ fail: * 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) return NULL; @@ -3709,9 +4959,9 @@ key_setsadbmsg(type, tlen, satype, seq, pid, reserved) return NULL; m->m_pkthdr.len = m->m_len = len; m->m_next = NULL; - + p = mtod(m, struct sadb_msg *); - + bzero(p, len); p->sadb_msg_version = PF_KEY_V2; p->sadb_msg_type = type; @@ -3721,7 +4971,7 @@ key_setsadbmsg(type, tlen, satype, seq, pid, reserved) p->sadb_msg_reserved = reserved; p->sadb_msg_seq = seq; p->sadb_msg_pid = (u_int32_t)pid; - + return m; } @@ -3729,13 +4979,13 @@ key_setsadbmsg(type, tlen, satype, seq, pid, reserved) * 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; - + len = PFKEY_ALIGN8(sizeof(struct sadb_sa)); m = key_alloc_mbuf(len); if (!m || m->m_next) { /*XXX*/ @@ -3743,9 +4993,9 @@ key_setsadbsa(sav) m_freem(m); return NULL; } - + p = mtod(m, struct sadb_sa *); - + bzero(p, len); p->sadb_sa_len = PFKEY_UNIT64(len); p->sadb_sa_exttype = SADB_EXT_SA; @@ -3755,7 +5005,7 @@ key_setsadbsa(sav) p->sadb_sa_auth = sav->alg_auth; p->sadb_sa_encrypt = sav->alg_enc; p->sadb_sa_flags = sav->flags; - + return m; } @@ -3763,50 +5013,156 @@ key_setsadbsa(sav) * 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, + u_int8_t prefixlen, + u_int16_t ul_proto) { struct mbuf *m; struct sadb_address *p; size_t len; - + len = PFKEY_ALIGN8(sizeof(struct sadb_address)) + - PFKEY_ALIGN8(saddr->sa_len); + PFKEY_ALIGN8(saddr->sa_len); m = key_alloc_mbuf(len); if (!m || m->m_next) { /*XXX*/ if (m) m_freem(m); return NULL; } - + p = mtod(m, struct sadb_address *); - + bzero(p, len); p->sadb_address_len = PFKEY_UNIT64(len); p->sadb_address_exttype = exttype; p->sadb_address_proto = ul_proto; if (prefixlen == FULLMASK) { switch (saddr->sa_family) { - case AF_INET: - prefixlen = sizeof(struct in_addr) << 3; - break; - case AF_INET6: - prefixlen = sizeof(struct in6_addr) << 3; - break; - default: - ; /*XXX*/ + case AF_INET: + prefixlen = sizeof(struct in_addr) << 3; + break; + case AF_INET6: + prefixlen = sizeof(struct in6_addr) << 3; + break; + default: + ; /*XXX*/ } } p->sadb_address_prefixlen = prefixlen; p->sadb_address_reserved = 0; - + bcopy(saddr, - mtod(m, caddr_t) + PFKEY_ALIGN8(sizeof(struct sadb_address)), - saddr->sa_len); + mtod(m, caddr_t) + PFKEY_ALIGN8(sizeof(struct sadb_address)), + saddr->sa_len); + + return m; +} + +static struct mbuf * +key_setsadbipsecif(ifnet_t internal_if, + ifnet_t outgoing_if, + ifnet_t ipsec_if, + int init_disabled) +{ + struct mbuf *m; + struct sadb_x_ipsecif *p; + size_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_session_id + */ +static struct mbuf * +key_setsadbsession_id (u_int64_t session_ids[]) +{ + struct mbuf *m; + struct sadb_session_id *p; + size_t len; + + len = PFKEY_ALIGN8(sizeof(*p)); + m = key_alloc_mbuf(len); + if (!m || m->m_next) { /*XXX*/ + if (m) + m_freem(m); + return NULL; + } + + p = mtod(m, __typeof__(p)); + + bzero(p, len); + 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; + int list_len, len; + + if (!stats) { + return NULL; + } + + list_len = sizeof(*stats) * max_stats; + len = PFKEY_ALIGN8(sizeof(*p)) + PFKEY_ALIGN8(list_len); + m = key_alloc_mbuf(len); + if (!m || m->m_next) { /*XXX*/ + if (m) + m_freem(m); + return NULL; + } + + p = mtod(m, __typeof__(p)); + + bzero(p, len); + p->sadb_sastat_len = 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; } @@ -3815,16 +5171,17 @@ key_setsadbaddr(exttype, saddr, prefixlen, ul_proto) * set data into sadb_ident. */ 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_setsadbident( + u_int16_t exttype, + u_int16_t idtype, + caddr_t string, + int stringlen, + u_int64_t id) { struct mbuf *m; struct sadb_ident *p; size_t len; - + len = PFKEY_ALIGN8(sizeof(struct sadb_ident)) + PFKEY_ALIGN8(stringlen); m = key_alloc_mbuf(len); if (!m || m->m_next) { /*XXX*/ @@ -3832,20 +5189,20 @@ key_setsadbident(exttype, idtype, string, stringlen, id) m_freem(m); return NULL; } - + p = mtod(m, struct sadb_ident *); - + 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; - + bcopy(string, - mtod(m, caddr_t) + PFKEY_ALIGN8(sizeof(struct sadb_ident)), - stringlen); - + mtod(m, caddr_t) + PFKEY_ALIGN8(sizeof(struct sadb_ident)), + stringlen); + return m; } #endif @@ -3854,14 +5211,16 @@ key_setsadbident(exttype, idtype, string, stringlen, id) * 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; - + len = PFKEY_ALIGN8(sizeof(struct sadb_x_sa2)); m = key_alloc_mbuf(len); if (!m || m->m_next) { /*XXX*/ @@ -3869,9 +5228,9 @@ key_setsadbxsa2(mode, seq, reqid) m_freem(m); return NULL; } - + p = mtod(m, struct sadb_x_sa2 *); - + bzero(p, len); p->sadb_x_sa2_len = PFKEY_UNIT64(len); p->sadb_x_sa2_exttype = SADB_X_EXT_SA2; @@ -3880,7 +5239,8 @@ key_setsadbxsa2(mode, seq, reqid) 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; } @@ -3888,15 +5248,15 @@ key_setsadbxsa2(mode, seq, reqid) * 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; - + len = PFKEY_ALIGN8(sizeof(struct sadb_x_policy)); m = key_alloc_mbuf(len); if (!m || m->m_next) { /*XXX*/ @@ -3904,16 +5264,16 @@ key_setsadbxpolicy(type, dir, id) m_freem(m); return NULL; } - + p = mtod(m, struct sadb_x_policy *); - + bzero(p, len); p->sadb_x_policy_len = PFKEY_UNIT64(len); p->sadb_x_policy_exttype = SADB_X_EXT_POLICY; p->sadb_x_policy_type = type; p->sadb_x_policy_dir = dir; p->sadb_x_policy_id = id; - + return m; } @@ -3922,19 +5282,25 @@ key_setsadbxpolicy(type, dir, id) * 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); - + return new; } @@ -3943,43 +5309,45 @@ key_newbuf(src, len) * 0: false */ int -key_ismyaddr(sa) - struct sockaddr *sa; +key_ismyaddr( + struct sockaddr *sa) { #if INET struct sockaddr_in *sin; struct in_ifaddr *ia; #endif - + /* sanity check */ 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; - for (ia = in_ifaddrhead.tqh_first; ia; - ia = ia->ia_link.tqe_next) - { - 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); - return 1; + case AF_INET: + 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) { + 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) + { + IFA_UNLOCK(&ia->ia_ifa); + lck_rw_done(in_ifaddr_rwlock); + return 1; + } + IFA_UNLOCK(&ia->ia_ifa); } - } - lck_mtx_unlock(rt_mtx); - break; + lck_rw_done(in_ifaddr_rwlock); + break; #endif #if INET6 - case AF_INET6: - return key_ismyaddr6((struct sockaddr_in6 *)sa); + case AF_INET6: + return key_ismyaddr6((struct sockaddr_in6 *)(void *)sa); #endif } - + return 0; } @@ -3993,20 +5361,23 @@ key_ismyaddr(sa) #include 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); + + lck_rw_lock_shared(&in6_ifaddr_rwlock); for (ia = in6_ifaddrs; ia; ia = ia->ia_next) { + IFA_LOCK(&ia->ia_ifa); if (key_sockaddrcmp((struct sockaddr *)&sin6, - (struct sockaddr *)&ia->ia_addr, 0) == 0) { - lck_mtx_unlock(nd6_mutex); + (struct sockaddr *)&ia->ia_addr, 0) == 0) { + IFA_UNLOCK(&ia->ia_ifa); + lck_rw_done(&in6_ifaddr_rwlock); return 1; } - + IFA_UNLOCK(&ia->ia_ifa); + /* * XXX Multicast * XXX why do we care about multlicast here while we don't care @@ -4014,18 +5385,21 @@ key_ismyaddr6(sin6) * 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)) return 1; - + return 0; } #endif /*INET6*/ @@ -4035,28 +5409,32 @@ key_ismyaddr6(sin6) * 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) return 1; - + 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) return 0; - + if (flag == CMP_EXACTLY) { if (saidx0->mode != saidx1->mode) return 0; @@ -4066,10 +5444,9 @@ key_cmpsaidx(saidx0, saidx1, flag) 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. @@ -4077,23 +5454,23 @@ key_cmpsaidx(saidx0, saidx1, flag) 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; } } - + return 1; } @@ -4107,30 +5484,49 @@ key_cmpsaidx(saidx0, saidx1, flag) * 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) return 1; - + 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) { + (struct sockaddr *)&spidx1->src, 1) != 0) { return 0; } if (key_sockaddrcmp((struct sockaddr *)&spidx0->dst, - (struct sockaddr *)&spidx1->dst, 1) != 0) { + (struct sockaddr *)&spidx1->dst, 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; } @@ -4144,145 +5540,251 @@ key_cmpspidx_exactly(spidx0, spidx1) * 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) return 1; - + if (spidx0 == NULL || spidx1 == NULL) return 0; - - 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->src_range.start.ss_len > 0) + spidx0_src_is_range = 1; + + 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)) - 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)) - 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; - } - + + /* 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; + + /* 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; + } 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; + } + } + + if (spidx0_dst_is_range) { + if (!key_is_addr_in_range(&spidx1->dst, &spidx0->dst_range)) + return 0; + } 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 (port && satosin(sa1)->sin_port != satosin(sa2)->sin_port) - return 1; - break; - case AF_INET6: - if (sa1->sa_len != sizeof(struct sockaddr_in6)) - return 1; /*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; - } - if (port && - satosin6(sa1)->sin6_port != satosin6(sa2)->sin6_port) { - return 1; - } - default: - if (bcmp(sa1, sa2, sa1->sa_len) != 0) - return 1; - break; + case AF_INET: + if (sa1->sa_len != sizeof(struct sockaddr_in)) + return 2; + + 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 2; /*EINVAL*/ + + if (satosin6(sa1)->sin6_scope_id != + satosin6(sa2)->sin6_scope_id) { + return 2; + } + + 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: + result = memcmp(sa1, sa2, sa1->sa_len); + break; } - - return 0; + + if (result < 0) result = -1; + else if (result > 0) result = 1; + + return result; } /* @@ -4296,25 +5798,26 @@ key_sockaddrcmp(sa1, sa2, port) * 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; - + /* XXX: This could be considerably faster if we compare a word * at a time, but it is complicated on LSB Endian machines */ - + /* Handle null pointers */ if (p1 == NULL || p2 == NULL) return (p1 == p2); - + while (bits >= 8) { if (*p1++ != *p2++) return 0; bits -= 8; } - + if (bits > 0) { mask = ~((1<<(8-bits))-1); if ((*p1 & mask) != (*p2 & mask)) @@ -4328,271 +5831,384 @@ key_bbcmp(p1, p2, bits) * scanning SPD and SAD to check status for each entries, * and do to remove or to expire. * XXX: year 2038 problem may remain. - */ - -void -key_timehandler(void) -{ - u_int dir; - int s; - struct timeval tv; - - microtime(&tv); - - lck_mtx_lock(sadb_mutex); - /* SPD */ - { - struct secpolicy *sp, *nextsp; - - 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->state == IPSEC_SPSTATE_DEAD) { - key_freesp(sp); - continue; - } - - if (sp->lifetime == 0 && sp->validtime == 0) - continue; + */ +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; + struct timeval tv; + struct secpolicy **spbuf = NULL, **spptr = NULL; + struct secasvar **savexbuf = NULL, **savexptr = NULL; + struct secasvar **savkabuf = NULL, **savkaptr = NULL; + int spbufcount = 0, savbufcount = 0, spcount = 0, savexcount = 0, savkacount = 0, cnt; + int stop_handler = 1; /* stop the timehandler */ - /* 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); - continue; + 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) { + spbufcount += 256; + KMALLOC_WAIT(spbuf, struct secpolicy **, spbufcount * sizeof(struct secpolicy *)); + if (spbuf) + spptr = spbuf; + } + if ((savbufcount = ipsec_sav_count) != 0) { + savbufcount += 512; + KMALLOC_WAIT(savexbuf, struct secasvar **, savbufcount * sizeof(struct secasvar *)); + if (savexbuf) + savexptr = savexbuf; + KMALLOC_WAIT(savkabuf, struct secasvar **, savbufcount * sizeof(struct secasvar *)); + if (savkabuf) + savkaptr = savkabuf; + } + lck_mtx_lock(sadb_mutex); + /* SPD */ + 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); + + if (sp->state == IPSEC_SPSTATE_DEAD) { + key_freesp(sp, KEY_SADB_LOCKED); + continue; + } + + 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++; + } + } } } } - } - + /* 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; - } - - /* if LARVAL entry doesn't become MATURE, delete it. */ - for (sav = LIST_FIRST(&sah->savtree[SADB_SASTATE_LARVAL]); - sav != NULL; - sav = nextsav) { - - nextsav = LIST_NEXT(sav, chain); - - 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. - */ - 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); - } + { + struct secashead *sah, *nextsah; + struct secasvar *sav, *nextsav; - /* - * 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); - - /* we don't need to check. */ - if (sav->lft_s == NULL) + 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; - - /* sanity check */ - if (sav->lft_c == NULL) { - ipseclog((LOG_DEBUG,"key_timehandler: " - "There is no CURRENT time, why?\n")); + } + + 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; } - - /* check SOFT lifetime */ - if (sav->lft_s->sadb_lifetime_addtime != 0 - && tv.tv_sec - sav->created > sav->lft_s->sadb_lifetime_addtime) { + + if (savbufcount == 0) { + 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) { + + larval_sav_count++; + total_sav_count++; + 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 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++; + } + } + + /* + * 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; + + /* 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) { + /* + * 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) { - - nextsav = LIST_NEXT(sav, chain); - - /* 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; - } - - 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; - } + + /* 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); + + /* 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; + } + + 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; + } + } #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. - */ - + else if (savbuf && savexcount < savbufcount + && 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. + */ + + /* + * If there is no SA then sending + * expire message. + */ + //key_expire(sav); + sav->refcnt++; + *savexptr++ = sav; + savexcount++; + } +#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, KEY_SADB_LOCKED); + sav = NULL; + } + } + + /* 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; @@ -4600,13 +6216,65 @@ key_timehandler(void) } natt_now++; - + 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; + int cnt_send = savkacount; + + while (cnt_send--) { + if (ipsec_send_natt_keepalive(*(--savkaptr))) { + // iterate (all over again) and update timestamps + struct secasvar **savkaptr_update = savkaptr_sav; + int 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; } @@ -4614,55 +6282,56 @@ key_timehandler(void) * 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 */ random(); #else struct timeval tv; - + microtime(&tv); - + srandom(tv.tv_usec); #endif - + 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) { - size_t n; - u_long v; - static int warn = 1; #ifdef __APPLE__ - + read_random(p, (u_int)l); #else + size_t n; + u_int32_t v; + static int warn = 1; + n = 0; n = (size_t)read_random(p, (u_int)l); /* last resort */ while (n < l) { v = random(); bcopy(&v, (u_int8_t *)p + n, - l - n < sizeof(v) ? l - n : sizeof(v)); + l - n < sizeof(v) ? l - n : sizeof(v)); n += sizeof(v); - + if (warn) { printf("WARNING: pseudo-random number generator " - "used for IPsec processing\n"); + "used for IPsec processing\n"); warn = 0; } } @@ -4676,21 +6345,21 @@ key_randomfill(p, l) * 0: invalid satype. */ static u_int16_t -key_satype2proto(satype) - u_int8_t satype; +key_satype2proto( + u_int8_t satype) { switch (satype) { - case SADB_SATYPE_UNSPEC: - return IPSEC_PROTO_ANY; - case SADB_SATYPE_AH: - return IPPROTO_AH; - case SADB_SATYPE_ESP: - return IPPROTO_ESP; - case SADB_X_SATYPE_IPCOMP: - return IPPROTO_IPCOMP; - break; - default: - return 0; + case SADB_SATYPE_UNSPEC: + return IPSEC_PROTO_ANY; + case SADB_SATYPE_AH: + return IPPROTO_AH; + case SADB_SATYPE_ESP: + return IPPROTO_ESP; + case SADB_X_SATYPE_IPCOMP: + return IPPROTO_IPCOMP; + break; + default: + return 0; } /* NOTREACHED */ } @@ -4701,23 +6370,55 @@ key_satype2proto(satype) * 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; + 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]) { + 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]) { + ifnet_find_by_name(ipsecifopts->sadb_x_ipsecif_outgoing_if, &outgoing_if); + } + } + + return outgoing_if ? outgoing_if->if_index : 0; +} + /* %%% PF_KEY */ /* * SADB_GETSPI processing is to receive @@ -4732,27 +6433,28 @@ key_proto2satype(proto) * 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) panic("key_getspi: NULL pointer is passed.\n"); - + if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL || mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) { ipseclog((LOG_DEBUG, "key_getspi: invalid message is passed.\n")); @@ -4764,85 +6466,95 @@ key_getspi(so, m, 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; } else { mode = IPSEC_MODE_ANY; reqid = 0; } - + 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); + /* map satype to proto */ if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) { ipseclog((LOG_DEBUG, "key_getspi: invalid satype is passed.\n")); return key_senderror(so, m, EINVAL); } - + /* make sure if port number is zero. */ switch (((struct sockaddr *)(src0 + 1))->sa_family) { - case AF_INET: - if (((struct sockaddr *)(src0 + 1))->sa_len != - sizeof(struct sockaddr_in)) - return key_senderror(so, m, EINVAL); - ((struct sockaddr_in *)(src0 + 1))->sin_port = 0; - break; - case AF_INET6: - if (((struct sockaddr *)(src0 + 1))->sa_len != - sizeof(struct sockaddr_in6)) - return key_senderror(so, m, EINVAL); - ((struct sockaddr_in6 *)(src0 + 1))->sin6_port = 0; - break; - default: - ; /*???*/ + case AF_INET: + if (((struct sockaddr *)(src0 + 1))->sa_len != + sizeof(struct sockaddr_in)) + return key_senderror(so, m, EINVAL); + ((struct sockaddr_in *)(void *)(src0 + 1))->sin_port = 0; + break; + case AF_INET6: + if (((struct sockaddr *)(src0 + 1))->sa_len != + sizeof(struct sockaddr_in6)) + return key_senderror(so, m, EINVAL); + ((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)) - return key_senderror(so, m, EINVAL); - ((struct sockaddr_in *)(dst0 + 1))->sin_port = 0; - break; - case AF_INET6: - if (((struct sockaddr *)(dst0 + 1))->sa_len != - sizeof(struct sockaddr_in6)) - return key_senderror(so, m, EINVAL); - ((struct sockaddr_in6 *)(dst0 + 1))->sin6_port = 0; - break; - default: - ; /*???*/ + case AF_INET: + if (((struct sockaddr *)(dst0 + 1))->sa_len != + sizeof(struct sockaddr_in)) + return key_senderror(so, m, EINVAL); + ((struct sockaddr_in *)(void *)(dst0 + 1))->sin_port = 0; + break; + case AF_INET6: + if (((struct sockaddr *)(dst0 + 1))->sa_len != + sizeof(struct sockaddr_in6)) + return key_senderror(so, m, EINVAL); + ((struct sockaddr_in6 *)(void *)(dst0 + 1))->sin6_port = 0; + break; + default: + ; /*???*/ } - + /* 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); 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) { + /* 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)) == NULL) { + lck_mtx_unlock(sadb_mutex); ipseclog((LOG_DEBUG, "key_getspi: No more memory.\n")); return key_senderror(so, m, ENOBUFS); } } - + /* 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. */ + lck_mtx_unlock(sadb_mutex); return key_senderror(so, m, error); } - + /* set spi */ key_setspi(newsav, htonl(spi)); - + #ifndef IPSEC_NONBLOCK_ACQUIRE /* delete the entry in acqtree */ if (mhp->msg->sadb_msg_seq != 0) { @@ -4854,149 +6566,211 @@ key_getspi(so, m, mhp) acq->created = tv.tv_sec; acq->count = 0; } - } + } #endif - + + 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)) + + 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; + 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); - - 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_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)); - + if (!n) + return key_senderror(so, m, ENOBUFS); + + 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_sa = (struct sadb_sa *)(void *)(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)); + #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); + } + + 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); + + m_freem(m); + return key_sendup_mbuf(so, n, 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); +u_int32_t +key_getspi2(struct sockaddr *src, + struct sockaddr *dst, + u_int8_t proto, + u_int8_t mode, + u_int32_t reqid, + struct sadb_spirange *spirange) +{ + u_int32_t spi; + struct secasindex saidx; + + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED); + + /* XXX boundary check against sa_len */ + KEY_SETSECASIDX(proto, mode, reqid, src, dst, 0, &saidx); + + /* make sure if port number is zero. */ + switch (((struct sockaddr *)&saidx.src)->sa_family) { + case AF_INET: + if (((struct sockaddr *)&saidx.src)->sa_len != sizeof(struct sockaddr_in)) + return 0; + ((struct sockaddr_in *)&saidx.src)->sin_port = 0; + break; + case AF_INET6: + if (((struct sockaddr *)&saidx.src)->sa_len != sizeof(struct sockaddr_in6)) + return 0; + ((struct sockaddr_in6 *)&saidx.src)->sin6_port = 0; + break; + default: + ; /*???*/ } - - 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); - - m_freem(m); - return key_sendup_mbuf(so, n, KEY_SENDUP_ONE); - } + switch (((struct sockaddr *)&saidx.dst)->sa_family) { + case AF_INET: + if (((struct sockaddr *)&saidx.dst)->sa_len != sizeof(struct sockaddr_in)) + return 0; + ((struct sockaddr_in *)&saidx.dst)->sin_port = 0; + break; + case AF_INET6: + if (((struct sockaddr *)&saidx.dst)->sa_len != sizeof(struct sockaddr_in6)) + return 0; + ((struct sockaddr_in6 *)&saidx.dst)->sin6_port = 0; + break; + default: + ; /*???*/ + } + + lck_mtx_lock(sadb_mutex); + + /* SPI allocation */ + spi = key_do_getnewspi(spirange, &saidx); + + lck_mtx_unlock(sadb_mutex); + + return spi; } /* * allocating new SPI - * called by key_getspi(). + * called by key_getspi() and key_getspi2(). * OUT: * 0: failure. * 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); - + /* 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; + keymin = key_spi_minval; + keymax = 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; + if (keymin >= 0x10000) + keymin = 0xffff; + if (keymax >= 0x10000) + keymax = 0xffff; + if (keymin > keymax) { + t = keymin; keymin = keymax; keymax = t; } } - - 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) break; } - + if (count == 0 || newspi == 0) { ipseclog((LOG_DEBUG, "key_do_getnewspi: to allocate spi is failed.\n")); return 0; } } - + /* statistics */ keystat.getspi_count = - (keystat.getspi_count + key_spi_trycnt - count) / 2; - + (keystat.getspi_count + key_spi_trycnt - count) / 2; + return newspi; } @@ -5014,33 +6788,35 @@ key_do_getnewspi(spirange, saidx) * 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; + ifnet_t ipsec_if = NULL; struct secasindex saidx; struct secashead *sah; struct secasvar *sav; u_int16_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) 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")); 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 || @@ -5052,9 +6828,9 @@ key_update(so, m, mhp) 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_update: invalid message is passed.\n")); - return key_senderror(so, m, EINVAL); - } + ipseclog((LOG_DEBUG, "key_update: 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)) { @@ -5062,100 +6838,279 @@ key_update(so, m, 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); + /* 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); + /* get a SA header */ if ((sah = key_getsah(&saidx)) == NULL) { + lck_mtx_unlock(sadb_mutex); ipseclog((LOG_DEBUG, "key_update: no SA index found.\n")); return key_senderror(so, m, ENOENT); } - + /* set spidx if there */ /* XXX rewrite */ error = key_setident(sah, m, mhp); - if (error) + if (error) { + lck_mtx_unlock(sadb_mutex); return key_senderror(so, m, error); - + } + /* 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) { + && (sav = key_getsavbyseq(sah, mhp->msg->sadb_msg_seq)) == NULL) { + lck_mtx_unlock(sadb_mutex); ipseclog((LOG_DEBUG, - "key_update: no larval SA with sequence %u exists.\n", - mhp->msg->sadb_msg_seq)); + "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) { + lck_mtx_unlock(sadb_mutex); ipseclog((LOG_DEBUG, - "key_update: no such a SA found (spi:%u)\n", - (u_int32_t)ntohl(sa0->sadb_sa_spi))); + "key_update: no such a SA found (spi:%u)\n", + (u_int32_t)ntohl(sa0->sadb_sa_spi))); return key_senderror(so, m, EINVAL); } #endif - + /* validity check */ if (sav->sah->saidx.proto != proto) { + lck_mtx_unlock(sadb_mutex); ipseclog((LOG_DEBUG, - "key_update: protocol mismatched (DB=%u param=%u)\n", - sav->sah->saidx.proto, proto)); + "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) { + lck_mtx_unlock(sadb_mutex); + 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); + } +#endif + if (sav->pid != mhp->msg->sadb_msg_pid) { + lck_mtx_unlock(sadb_mutex); 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))); + "key_update: pid mismatched (DB:%u param:%u)\n", + sav->pid, mhp->msg->sadb_msg_pid)); + return key_senderror(so, m, EINVAL); + } + + /* copy sav values */ + error = key_setsaval(sav, m, mhp); + if (error) { + key_freesav(sav, KEY_SADB_LOCKED); + lck_mtx_unlock(sadb_mutex); + return key_senderror(so, m, error); + } + + sav->flags2 = flags2; + if (flags2 & SADB_X_EXT_SA2_DELETE_ON_DETACH) { + sav->so = so; + } + + /* + * 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; + + /* check SA values to be mature. */ + if ((error = key_mature(sav)) != 0) { + key_freesav(sav, KEY_SADB_LOCKED); + lck_mtx_unlock(sadb_mutex); + return key_senderror(so, m, error); + } + + lck_mtx_unlock(sadb_mutex); + + { + 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); + } + + m_freem(m); + return key_sendup_mbuf(so, n, KEY_SENDUP_ALL); + } +} + +static int +key_migrate(struct socket *so, + struct mbuf *m, + const struct sadb_msghdr *mhp) +{ + 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_int16_t proto; + + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED); + + /* sanity check */ + 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_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->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); } -#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); + + 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) || + 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); + } + + lck_mtx_lock(sadb_mutex); + + 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); + + /* Find existing SAH and SAV */ + KEY_SETSECASIDX(proto, IPSEC_MODE_ANY, 0, src0 + 1, dst0 + 1, ipsec_if0 ? ipsec_if0->if_index : 0, &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); + ipseclog((LOG_DEBUG, "key_migrate: no mature SAH found.\n")); + return key_senderror(so, m, ENOENT); } - - /* copy sav values */ - error = key_setsaval(sav, m, mhp); - if (error) { - key_freesav(sav); - return key_senderror(so, m, error); + + if (sav == NULL) { + lck_mtx_unlock(sadb_mutex); + ipseclog((LOG_DEBUG, "key_migrate: no SA found.\n")); + return key_senderror(so, m, ENOENT); } - - /* check SA values to be mature. */ - if ((error = key_mature(sav)) != 0) { - key_freesav(sav); - return key_senderror(so, m, error); + + /* 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)) == NULL) { + if ((newsah = key_newsah(&saidx1, ipsec_if1, key_get_outgoing_ifindex_from_message(mhp, SADB_X_EXT_MIGRATE_IPSECIF), sah->dir)) == NULL) { + lck_mtx_unlock(sadb_mutex); + ipseclog((LOG_DEBUG, "key_migrate: No more memory.\n")); + return key_senderror(so, m, ENOBUFS); + } } - - { - 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); + + /* 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->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; + + /* + * 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; + + 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}; + + /* 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; + newmsg->sadb_msg_len = 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); - } } /* @@ -5167,32 +7122,32 @@ key_update(so, m, mhp) */ #if IPSEC_DOSEQCHECK static struct secasvar * -key_getsavbyseq(sah, seq) - struct secashead *sah; - u_int32_t seq; +key_getsavbyseq( + struct secashead *sah, + u_int32_t seq) { struct secasvar *sav; u_int state; - + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - + state = SADB_SASTATE_LARVAL; - + /* search SAD with sequence number ? */ LIST_FOREACH(sav, &sah->savtree[state], chain) { - + KEY_CHKSASTATE(state, sav->state, "key_getsabyseq"); - + if (sav->seq == seq) { sav->refcnt++; KEYDEBUG(KEYDEBUG_IPSEC_STAMP, - printf("DP key_getsavbyseq cause " - "refcnt++:%d SA:%p\n", - sav->refcnt, sav)); + printf("DP key_getsavbyseq cause " + "refcnt++:%d SA:0x%llx\n", sav->refcnt, + (uint64_t)VM_KERNEL_ADDRPERM(sav))); return sav; } } - + return NULL; } #endif @@ -5213,13 +7168,14 @@ key_getsavbyseq(sah, seq) * m will always be freed. */ static int -key_add(so, m, mhp) - struct socket *so; - struct mbuf *m; - const struct sadb_msghdr *mhp; +key_add( + 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 *newsah; struct secasvar *newsav; @@ -5227,19 +7183,20 @@ key_add(so, m, mhp) 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) panic("key_add: 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")); + 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 || @@ -5251,100 +7208,132 @@ key_add(so, m, mhp) 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")); - return key_senderror(so, m, EINVAL); - } + 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 *)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; } - - 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); + /* 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); + /* get a SA header */ if ((newsah = key_getsah(&saidx)) == NULL) { - /* create a new SA header */ - if ((newsah = key_newsah(&saidx)) == 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)) == NULL) { + lck_mtx_unlock(sadb_mutex); ipseclog((LOG_DEBUG, "key_add: No more memory.\n")); + bzero_keys(mhp); return key_senderror(so, m, ENOBUFS); } } - + /* set spidx if there */ /* XXX rewrite */ error = key_setident(newsah, m, mhp); if (error) { + lck_mtx_unlock(sadb_mutex); + bzero_keys(mhp); return key_senderror(so, m, error); } - + /* create new SA entry. */ - /* We can create new SA only if SPI is differenct. */ + /* We can create new SA only if SPI is different. */ if (key_getsavbyspi(newsah, sa0->sadb_sa_spi)) { + lck_mtx_unlock(sadb_mutex); ipseclog((LOG_DEBUG, "key_add: SA already exists.\n")); + bzero_keys(mhp); return key_senderror(so, m, EEXIST); } - newsav = key_newsav(m, mhp, newsah, &error); + newsav = key_newsav(m, mhp, newsah, &error, so); if (newsav == NULL) { + lck_mtx_unlock(sadb_mutex); + bzero_keys(mhp); return key_senderror(so, m, error); } - + + /* + * 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) { - key_freesav(newsav); + key_freesav(newsav, KEY_SADB_LOCKED); + lck_mtx_unlock(sadb_mutex); + bzero_keys(mhp); return key_senderror(so, m, error); } - + + 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")); - return key_senderror(so, m, ENOBUFS); - } - - m_freem(m); - return key_sendup_mbuf(so, n, KEY_SENDUP_ALL); + 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); } } /* m is retained */ static int -key_setident(sah, m, mhp) - struct secashead *sah; - struct mbuf *m; - const struct sadb_msghdr *mhp; +key_setident( + struct secashead *sah, + struct mbuf *m, + const struct sadb_msghdr *mhp) { const struct sadb_ident *idsrc, *iddst; int idsrclen, iddstlen; - + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - + /* 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) { @@ -5358,73 +7347,85 @@ key_setident(sah, m, mhp) ipseclog((LOG_DEBUG, "key_setident: invalid identity.\n")); return EINVAL; } - - idsrc = (const struct sadb_ident *)mhp->ext[SADB_EXT_IDENTITY_SRC]; - iddst = (const struct sadb_ident *)mhp->ext[SADB_EXT_IDENTITY_DST]; + + idsrc = (const struct sadb_ident *) + (void *)mhp->ext[SADB_EXT_IDENTITY_SRC]; + iddst = (const struct sadb_ident *) + (void *)mhp->ext[SADB_EXT_IDENTITY_DST]; idsrclen = mhp->extlen[SADB_EXT_IDENTITY_SRC]; iddstlen = mhp->extlen[SADB_EXT_IDENTITY_DST]; - + /* validity check */ if (idsrc->sadb_ident_type != iddst->sadb_ident_type) { ipseclog((LOG_DEBUG, "key_setident: ident type mismatch.\n")); return EINVAL; } - + 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; + case SADB_IDENTTYPE_PREFIX: + case SADB_IDENTTYPE_FQDN: + case SADB_IDENTTYPE_USERFQDN: + default: + /* XXX do nothing */ + sah->idents = NULL; + sah->identd = NULL; + return 0; } - + /* make structure */ - KMALLOC(sah->idents, struct sadb_ident *, idsrclen); + KMALLOC_NOWAIT(sah->idents, struct sadb_ident *, idsrclen); if (sah->idents == NULL) { - ipseclog((LOG_DEBUG, "key_setident: No more memory.\n")); - return ENOBUFS; + lck_mtx_unlock(sadb_mutex); + KMALLOC_WAIT(sah->idents, struct sadb_ident *, idsrclen); + lck_mtx_lock(sadb_mutex); + if (sah->idents == NULL) { + ipseclog((LOG_DEBUG, "key_setident: No more memory.\n")); + return ENOBUFS; + } } - KMALLOC(sah->identd, struct sadb_ident *, iddstlen); + KMALLOC_NOWAIT(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; + lck_mtx_unlock(sadb_mutex); + KMALLOC_WAIT(sah->identd, struct sadb_ident *, iddstlen); + lck_mtx_lock(sadb_mutex); + if (sah->identd == NULL) { + KFREE(sah->idents); + sah->idents = NULL; + ipseclog((LOG_DEBUG, "key_setident: No more memory.\n")); + return ENOBUFS; + } } bcopy(idsrc, sah->idents, idsrclen); bcopy(iddst, sah->identd, iddstlen); - + return 0; } /* * 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) 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) return NULL; - + if (n->m_len < sizeof(struct sadb_msg)) { n = m_pullup(n, sizeof(struct sadb_msg)); if (n == NULL) @@ -5432,13 +7433,13 @@ key_getmsgbuf_x1(m, mhp) } mtod(n, struct sadb_msg *)->sadb_msg_errno = 0; mtod(n, struct sadb_msg *)->sadb_msg_len = - PFKEY_UNIT64(n->m_pkthdr.len); - + 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 @@ -5452,42 +7453,45 @@ static int key_delete_all(struct socket *, struct mbuf *, * 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) panic("key_delete: NULL pointer is passed.\n"); - + /* map satype to proto */ if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) { ipseclog((LOG_DEBUG, "key_delete: invalid satype is passed.\n")); return key_senderror(so, m, EINVAL); } - + if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL || mhp->ext[SADB_EXT_ADDRESS_DST] == NULL) { ipseclog((LOG_DEBUG, "key_delete: 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)) { ipseclog((LOG_DEBUG, "key_delete: invalid message is passed.\n")); 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 @@ -5495,62 +7499,68 @@ key_delete(so, m, mhp) * 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); + /* 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 ? ipsec_if->if_index : 0, &saidx); + /* get a SA header */ LIST_FOREACH(sah, &sahtree, chain) { if (sah->state == SADB_SASTATE_DEAD) continue; 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) 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); + key_freesav(sav, KEY_SADB_LOCKED); + + lck_mtx_unlock(sadb_mutex); sav = NULL; - + { - struct mbuf *n; - struct sadb_msg *newmsg; - int mbufItems[] = {SADB_EXT_RESERVED, SADB_EXT_SA, - 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); - - if (n->m_len < sizeof(struct sadb_msg)) { - n = m_pullup(n, sizeof(struct sadb_msg)); - if (n == NULL) + struct mbuf *n; + struct sadb_msg *newmsg; + int mbufItems[] = {SADB_EXT_RESERVED, SADB_EXT_SA, + 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); - } - 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; + newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len); + + m_freem(m); + return key_sendup_mbuf(so, n, KEY_SENDUP_ALL); } } @@ -5558,32 +7568,34 @@ key_delete(so, m, mhp) * 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); - + 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); + /* 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 ? ipsec_if->if_index : 0, &saidx); + LIST_FOREACH(sah, &sahtree, chain) { if (sah->state == SADB_SASTATE_DEAD) continue; if (key_cmpsaidx(&sah->saidx, &saidx, CMP_HEAD) == 0) continue; - + /* Delete all non-LARVAL SAs. */ for (stateidx = 0; stateidx < _ARRAYLEN(saorder_state_alive); @@ -5597,39 +7609,41 @@ key_delete_all(so, m, mhp, proto) /* 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); } } } + lck_mtx_unlock(sadb_mutex); + { - struct mbuf *n; - struct sadb_msg *newmsg; - int mbufItems[] = {SADB_EXT_RESERVED, 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); - - if (n->m_len < sizeof(struct sadb_msg)) { - n = m_pullup(n, sizeof(struct sadb_msg)); - if (n == NULL) + struct mbuf *n; + struct sadb_msg *newmsg; + int mbufItems[] = {SADB_EXT_RESERVED, 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); - } - 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; + newmsg->sadb_msg_len = PFKEY_UNIT64(n->m_pkthdr.len); + + m_freem(m); + return key_sendup_mbuf(so, n, KEY_SENDUP_ALL); } } @@ -5646,30 +7660,31 @@ key_delete_all(so, m, mhp, proto) * 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) panic("key_get: NULL pointer is passed.\n"); - + /* map satype to proto */ if ((proto = key_satype2proto(mhp->msg->sadb_msg_satype)) == 0) { ipseclog((LOG_DEBUG, "key_get: 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) { @@ -5682,58 +7697,143 @@ key_get(so, m, mhp) ipseclog((LOG_DEBUG, "key_get: 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); + /* 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 ? ipsec_if->if_index : 0, &saidx); + + lck_mtx_lock(sadb_mutex); + /* get a SA header */ LIST_FOREACH(sah, &sahtree, chain) { if (sah->state == SADB_SASTATE_DEAD) continue; 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) 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) { + 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); + + m_freem(m); + return key_sendup_mbuf(so, n, KEY_SENDUP_ONE); + } +} - /* 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); +/* + * 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 = 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; +} - /* 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); - - m_freem(m); - return key_sendup_mbuf(so, n, KEY_SENDUP_ONE); - } +/* + * 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_int32_t *max_stat_res) +{ + int cur, found = 0; + + if (stat_arg == NULL || + stat_res == NULL || + max_stat_res == NULL) { + return -1; + } + + for (cur = 0; cur < max_stat_arg; 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; @@ -5750,7 +7850,7 @@ key_getcomb_setlifetime(comb) * 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; @@ -5759,20 +7859,20 @@ key_getcomb_esp() int i, off, o; int totlen; 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) continue; - + if (algo->keymax < ipsec_esp_keymin) continue; if (algo->keymin < ipsec_esp_keymin) encmin = ipsec_esp_keymin; else encmin = algo->keymin; - + if (ipsec_esp_auth) m = key_getcomb_ah(); else { @@ -5780,7 +7880,7 @@ key_getcomb_esp() 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; @@ -5790,7 +7890,7 @@ key_getcomb_esp() } if (!m) goto fail; - + totlen = 0; for (n = m; n; n = n->m_next) totlen += n->m_len; @@ -5798,30 +7898,31 @@ key_getcomb_esp() if (totlen % l) panic("assumption failed in key_getcomb_esp"); #endif - + for (off = 0; off < totlen; off += l) { n = m_pulldown(m, off, l, &o); if (!n) { /* 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_minbits = encmin; comb->sadb_comb_encrypt_maxbits = algo->keymax; } - + if (!result) result = m; else m_cat(result, m); } - + return result; - - fail: + +fail: if (result) m_freem(result); return NULL; @@ -5832,15 +7933,15 @@ key_getcomb_esp() * 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 keymin; int i; const int l = PFKEY_ALIGN8(sizeof(struct sadb_comb)); - + m = NULL; for (i = 1; i <= SADB_AALG_MAX; i++) { #if 1 @@ -5851,38 +7952,38 @@ key_getcomb_ah() algo = ah_algorithm_lookup(i); if (!algo) continue; - + if (algo->keymax < ipsec_ah_keymin) continue; if (algo->keymin < ipsec_ah_keymin) - min = ipsec_ah_keymin; + keymin = ipsec_ah_keymin; else - min = algo->keymin; - + keymin = algo->keymin; + if (!m) { #if DIAGNOSTIC 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); + 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; } @@ -5891,43 +7992,43 @@ key_getcomb_ah() * XXX reorder combinations by preference */ static struct mbuf * -key_getcomb_ipcomp() +key_getcomb_ipcomp(void) { 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); + 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); + 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_encrypt = i; /* what should we set into sadb_comb_*_{min,max}bits? */ } - + return m; } @@ -5937,46 +8038,46 @@ key_getcomb_ipcomp() * 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) { #if IPSEC_ESP - case IPPROTO_ESP: - m = key_getcomb_esp(); - break; + case IPPROTO_ESP: + m = key_getcomb_esp(); + break; #endif - case IPPROTO_AH: - m = key_getcomb_ah(); - break; - case IPPROTO_IPCOMP: - m = key_getcomb_ipcomp(); - break; - default: - return NULL; + case IPPROTO_AH: + m = key_getcomb_ah(); + break; + case IPPROTO_IPCOMP: + m = key_getcomb_ipcomp(); + break; + default: + return NULL; } - + if (!m) return NULL; - M_PREPEND(m, l, M_DONTWAIT); + M_PREPEND(m, l, M_WAITOK, 1); if (!m) return NULL; - + totlen = 0; 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); prop->sadb_prop_exttype = SADB_EXT_PROPOSAL; prop->sadb_prop_replay = 32; /* XXX */ - + return m; } @@ -6001,9 +8102,9 @@ key_getprop(saidx) * 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 @@ -6012,15 +8113,15 @@ key_acquire(saidx, sp) u_int8_t satype; 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) panic("key_acquire: NULL pointer is passed.\n"); if ((satype = key_proto2satype(saidx->proto)) == 0) panic("key_acquire: invalid proto is passed.\n"); - + #ifndef IPSEC_NONBLOCK_ACQUIRE /* * We never do anything about acquirng SA. There is anather @@ -6029,6 +8130,7 @@ key_acquire(saidx, sp) * 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. */ @@ -6036,21 +8138,23 @@ key_acquire(saidx, sp) } 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 @@ -6060,26 +8164,26 @@ key_acquire(saidx, sp) goto fail; } result = m; - + /* set sadb_address for saidx's. */ m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC, - (struct sockaddr *)&saidx->src, FULLMASK, IPSEC_ULPROTO_ANY); + (struct sockaddr *)&saidx->src, FULLMASK, IPSEC_ULPROTO_ANY); if (!m) { error = ENOBUFS; goto fail; } m_cat(result, m); - + m = key_setsadbaddr(SADB_EXT_ADDRESS_DST, - (struct sockaddr *)&saidx->dst, FULLMASK, IPSEC_ULPROTO_ANY); + (struct sockaddr *)&saidx->dst, FULLMASK, IPSEC_ULPROTO_ANY); if (!m) { error = ENOBUFS; goto fail; } m_cat(result, m); - + /* XXX proxy address (optional) */ - + /* set sadb_x_policy */ if (sp) { m = key_setsadbxpolicy(sp->policy, sp->spidx.dir, sp->id); @@ -6089,14 +8193,14 @@ key_acquire(saidx, sp) } 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)); @@ -6106,12 +8210,12 @@ key_acquire(saidx, sp) 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; @@ -6130,9 +8234,9 @@ key_acquire(saidx, sp) p += sizeof(struct sadb_ident) + PFKEY_ALIGN8(userfqdnlen); } #endif - + /* XXX sensitivity (optional) */ - + /* create proposal/combination extension */ m = key_getprop(saidx); #if 0 @@ -6153,12 +8257,12 @@ key_acquire(saidx, sp) if (m) m_cat(result, m); #endif - + if ((result->m_flags & M_PKTHDR) == 0) { error = EINVAL; goto fail; } - + if (result->m_len < sizeof(struct sadb_msg)) { result = m_pullup(result, sizeof(struct sadb_msg)); if (result == NULL) { @@ -6166,17 +8270,17 @@ key_acquire(saidx, sp) goto fail; } } - + 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); - + PFKEY_UNIT64(result->m_pkthdr.len); + return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED); - - fail: + +fail: if (result) m_freem(result); return error; @@ -6184,100 +8288,110 @@ key_acquire(saidx, sp) #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)); - + /* copy secindex */ bcopy(saidx, &newacq->saidx, sizeof(newacq->saidx)); newacq->seq = (acq_seq == ~0 ? 1 : ++acq_seq); microtime(&tv); newacq->created = tv.tv_sec; newacq->count = 0; - + return 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); - + LIST_FOREACH(acq, &acqtree, chain) { 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); - + LIST_FOREACH(acq, &acqtree, chain) { 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)); - + /* copy secindex */ bcopy(spidx, &acq->spidx, sizeof(acq->spidx)); microtime(&tv); acq->created = tv.tv_sec; acq->count = 0; - + return 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); - + LIST_FOREACH(acq, &spacqtree, chain) { if (key_cmpspidx_exactly(spidx, &acq->spidx)) return acq; } - + return NULL; } @@ -6296,73 +8410,80 @@ key_getspacq(spidx) * 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) panic("key_acquire2: NULL pointer is passed.\n"); - + /* * Error message from KMd. * We assume that if error was occurred in IKEd, the length of PFKEY * 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; struct timeval tv; - + /* 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; } - + if ((acq = key_getacqbyseq(mhp->msg->sadb_msg_seq)) == NULL) { /* * 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; } - + /* reset acq counter in order to deletion by timehander. */ microtime(&tv); acq->created = tv.tv_sec; acq->count = 0; #endif + lck_mtx_unlock(sadb_mutex); m_freem(m); return 0; } - + /* * This message is from user land. */ - + /* 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); } - + if (mhp->ext[SADB_EXT_ADDRESS_SRC] == NULL || 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); } @@ -6370,41 +8491,45 @@ key_acquire2(so, m, mhp) 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); + /* 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 ? ipsec_if->if_index : 0, &saidx); + /* get a SA index */ LIST_FOREACH(sah, &sahtree, chain) { 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); } - + return key_sendup_mbuf(so, m, KEY_SENDUP_REGISTERED); } /* * 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 * * from the ikmpd, and register a socket to send PF_KEY messages, @@ -6416,202 +8541,231 @@ key_acquire2(so, m, mhp) * 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) panic("key_register: NULL pointer is passed.\n"); - + /* check for invalid register message */ 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. */ + + /* When SATYPE_UNSPEC is specified, only return sadb_supported. */ if (mhp->msg->sadb_msg_satype == SADB_SATYPE_UNSPEC) goto setmsg; - + + /* create regnode */ + 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); } } - - /* create regnode */ - KMALLOC(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)); - + socket_lock(so, 1); newreg->so = so; ((struct keycb *)sotorawcb(so))->kp_registered++; socket_unlock(so, 1); - + /* add regnode to regtree. */ LIST_INSERT_HEAD(®tree[mhp->msg->sadb_msg_satype], newreg, chain); - - setmsg: + lck_mtx_unlock(sadb_mutex); +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; + 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; #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; - - 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; + + len = sizeof(struct sadb_msg) + alen + elen; + + 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); - - 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; - - 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)); + 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 *)(void *)(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; + + 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 = + /* 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 ? + */ + 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)); + } 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 (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); + } + } + } + } +} + /* * free secreg entry registered. * 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) 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; } @@ -6626,18 +8780,17 @@ key_freereg(so) * others : error number */ static int -key_expire(sav) - struct secasvar *sav; +key_expire( + struct secasvar *sav) { - int s; int 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) panic("key_expire: NULL pointer is passed.\n"); @@ -6645,7 +8798,7 @@ key_expire(sav) panic("key_expire: Why was SA index in SA NULL.\n"); 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); if (!m) { @@ -6653,7 +8806,7 @@ key_expire(sav) goto fail; } result = m; - + /* create SA extension */ m = key_setsadbsa(sav); if (!m) { @@ -6661,17 +8814,18 @@ key_expire(sav) goto fail; } m_cat(result, m); - + /* create SA extension */ m = key_setsadbxsa2(sav->sah->saidx.mode, - sav->replay ? sav->replay->count : 0, - sav->sah->saidx.reqid); + sav->replay ? sav->replay->count : 0, + sav->sah->saidx.reqid, + sav->flags2); if (!m) { error = ENOBUFS; goto fail; } m_cat(result, m); - + /* create lifetime extension (current and soft) */ len = PFKEY_ALIGN8(sizeof(*lt)) * 2; m = key_alloc_mbuf(len); @@ -6689,35 +8843,35 @@ key_expire(sav) 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); - + /* set sadb_address for source */ m = key_setsadbaddr(SADB_EXT_ADDRESS_SRC, - (struct sockaddr *)&sav->sah->saidx.src, - FULLMASK, IPSEC_ULPROTO_ANY); + (struct sockaddr *)&sav->sah->saidx.src, + FULLMASK, IPSEC_ULPROTO_ANY); if (!m) { error = ENOBUFS; goto fail; } m_cat(result, m); - + /* set sadb_address for destination */ m = key_setsadbaddr(SADB_EXT_ADDRESS_DST, - (struct sockaddr *)&sav->sah->saidx.dst, - FULLMASK, IPSEC_ULPROTO_ANY); + (struct sockaddr *)&sav->sah->saidx.dst, + FULLMASK, IPSEC_ULPROTO_ANY); if (!m) { error = ENOBUFS; goto fail; } m_cat(result, m); - + if ((result->m_flags & M_PKTHDR) == 0) { error = EINVAL; goto fail; } - + if (result->m_len < sizeof(struct sadb_msg)) { result = m_pullup(result, sizeof(struct sadb_msg)); if (result == NULL) { @@ -6725,21 +8879,19 @@ key_expire(sav) goto fail; } } - + 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); - - splx(s); + PFKEY_UNIT64(result->m_pkthdr.len); + return key_sendup_mbuf(NULL, result, KEY_SENDUP_REGISTERED); - - fail: + +fail: if (result) m_freem(result); - splx(s); return error; } @@ -6756,10 +8908,10 @@ key_expire(sav) * 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; @@ -6767,29 +8919,29 @@ key_flush(so, m, mhp) u_int16_t proto; u_int8_t state; u_int stateidx; - - lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - + /* sanity check */ 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) { ipseclog((LOG_DEBUG, "key_flush: invalid satype is passed.\n")); 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) { 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++) { @@ -6797,23 +8949,24 @@ key_flush(so, m, mhp) 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_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)) { ipseclog((LOG_DEBUG, "key_flush: No more memory.\n")); return key_senderror(so, m, ENOBUFS); } - + if (m->m_next) m_freem(m->m_next); m->m_next = NULL; @@ -6821,7 +8974,7 @@ key_flush(so, m, mhp) newmsg = mtod(m, struct sadb_msg *); newmsg->sadb_msg_errno = 0; newmsg->sadb_msg_len = PFKEY_UNIT64(m->m_pkthdr.len); - + return key_sendup_mbuf(so, m, KEY_SENDUP_ALL); } @@ -6837,82 +8990,122 @@ key_flush(so, m, mhp) * * 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; u_int16_t proto; u_int stateidx; u_int8_t satype; u_int8_t state; - int cnt; - struct sadb_msg *newmsg; + int cnt = 0, cnt2, bufcount; struct mbuf *n; - - lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_OWNED); - + int error = 0; + + lck_mtx_assert(sadb_mutex, LCK_MTX_ASSERT_NOTOWNED); + /* sanity check */ 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) { ipseclog((LOG_DEBUG, "key_dump: invalid satype is passed.\n")); return key_senderror(so, m, EINVAL); } - + + if ((bufcount = ipsec_sav_count) <= 0) { + error = ENOENT; + goto end; + } + bufcount += 512; /* extra */ + KMALLOC_WAIT(savbuf, struct sav_dump_elem*, bufcount * sizeof(struct sav_dump_elem)); + 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++) { 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++; } } } - - if (cnt == 0) - return key_senderror(so, m, ENOENT); - + lck_mtx_unlock(sadb_mutex); + + 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; - - /* 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); + elem_ptr = savbuf; + cnt2 = cnt; + while (cnt2) { + n = key_setdumpsa(elem_ptr->sav, SADB_DUMP, elem_ptr->satype, + --cnt2, mhp->msg->sadb_msg_pid); + + 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); - } + + key_sendup_mbuf(so, n, KEY_SENDUP_ONE); + elem_ptr++; + } + +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); return 0; } @@ -6923,21 +9116,19 @@ key_dump(so, m, mhp) * 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) panic("key_promisc: NULL pointer is passed.\n"); - + olen = PFKEY_UNUNIT64(mhp->msg->sadb_msg_len); - + if (olen < sizeof(struct sadb_msg)) { #if 1 return key_senderror(so, m, EINVAL); @@ -6952,33 +9143,33 @@ key_promisc(so, m, mhp) socket_lock(so, 1); 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: - case 1: - kp->kp_promisc = mhp->msg->sadb_msg_satype; - break; - default: - socket_unlock(so, 1); - return key_senderror(so, m, EINVAL); + mhp->msg->sadb_msg_errno = 0; + switch (mhp->msg->sadb_msg_satype) { + case 0: + case 1: + kp->kp_promisc = mhp->msg->sadb_msg_satype; + break; + default: + socket_unlock(so, 1); + return key_senderror(so, m, EINVAL); } socket_unlock(so, 1); - + /* send the original message back to everyone */ mhp->msg->sadb_msg_errno = 0; return key_sendup_mbuf(so, m, KEY_SENDUP_ALL); } else { /* send packet as is */ - + m_adj(m, PFKEY_ALIGN8(sizeof(struct sadb_msg))); - + /* TODO: if sadb_msg_seq is specified, send to specific pid */ return key_sendup_mbuf(so, m, KEY_SENDUP_ALL); } } static int (*key_typesw[])(struct socket *, struct mbuf *, - const struct sadb_msghdr *) = { + const struct sadb_msghdr *) = { NULL, /* SADB_RESERVED */ key_getspi, /* SADB_GETSPI */ key_update, /* SADB_UPDATE */ @@ -7002,8 +9193,72 @@ static int (*key_typesw[])(struct socket *, struct mbuf *, 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]); + } + } +} + /* * parse sadb_msg buffer to process PFKEYv2, * and create a data to response if needed. @@ -7016,28 +9271,29 @@ static int (*key_typesw[])(struct socket *, struct mbuf *, * 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) panic("key_parse: NULL pointer is passed.\n"); - + #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) @@ -7046,32 +9302,32 @@ key_parse(m, so) 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) { ipseclog((LOG_DEBUG, "key_parse: invalid message length.\n")); - pfkeystat.out_invlen++; + PFKEY_STAT_INCREMENT(pfkeystat.out_invlen); error = EINVAL; goto senderror; } - + if (msg->sadb_msg_version != PF_KEY_V2) { ipseclog((LOG_DEBUG, - "key_parse: PF_KEY version %u is mismatched.\n", - msg->sadb_msg_version)); - pfkeystat.out_invver++; + "key_parse: PF_KEY version %u is mismatched.\n", + msg->sadb_msg_version)); + 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++; + msg->sadb_msg_type)); + PFKEY_STAT_INCREMENT(pfkeystat.out_invmsgtype); error = EINVAL; goto senderror; } - + /* for old-fashioned code - should be nuked */ if (m->m_pkthdr.len > MCLBYTES) { m_freem(m); @@ -7079,210 +9335,223 @@ key_parse(m, so) } 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) return error; - + if (m->m_next) { /*XXX*/ + bzero_mbuf(m); m_freem(m); return ENOBUFS; } - + + keyAligned = TRUE; msg = mh.msg; - + /* check SA type */ switch (msg->sadb_msg_satype) { - case SADB_SATYPE_UNSPEC: - switch (msg->sadb_msg_type) { - case SADB_GETSPI: - case SADB_UPDATE: - case SADB_ADD: - case SADB_DELETE: - case SADB_GET: - case SADB_ACQUIRE: - case SADB_EXPIRE: - ipseclog((LOG_DEBUG, "key_parse: must specify satype " - "when msg type=%u.\n", msg->sadb_msg_type)); - pfkeystat.out_invsatype++; - error = EINVAL; + case SADB_SATYPE_UNSPEC: + switch (msg->sadb_msg_type) { + case SADB_GETSPI: + case SADB_UPDATE: + case SADB_ADD: + case SADB_DELETE: + case SADB_GET: + case SADB_ACQUIRE: + case SADB_EXPIRE: + ipseclog((LOG_DEBUG, "key_parse: must specify satype " + "when msg type=%u.\n", msg->sadb_msg_type)); + 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_SPDGET: + case SADB_X_SPDDUMP: + case SADB_X_SPDFLUSH: + 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)); + PFKEY_STAT_INCREMENT(pfkeystat.out_invsatype); + error = EINVAL; + goto senderror; + } + break; + case SADB_SATYPE_RSVP: + case SADB_SATYPE_OSPFV2: + case SADB_SATYPE_RIPV2: + case SADB_SATYPE_MIP: + ipseclog((LOG_DEBUG, "key_parse: type %u isn't supported.\n", + msg->sadb_msg_satype)); + PFKEY_STAT_INCREMENT(pfkeystat.out_invsatype); + error = EOPNOTSUPP; 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_SPDGET: - case SADB_X_SPDDUMP: - case SADB_X_SPDFLUSH: - case SADB_X_SPDSETIDX: - case SADB_X_SPDUPDATE: - case SADB_X_SPDDELETE2: - ipseclog((LOG_DEBUG, "key_parse: illegal satype=%u\n", - msg->sadb_msg_type)); - pfkeystat.out_invsatype++; + case 1: /* XXX: What does it do? */ + if (msg->sadb_msg_type == SADB_X_PROMISC) + break; + /*FALLTHROUGH*/ + default: + ipseclog((LOG_DEBUG, "key_parse: invalid type %u is passed.\n", + msg->sadb_msg_satype)); + PFKEY_STAT_INCREMENT(pfkeystat.out_invsatype); error = EINVAL; goto senderror; - } - break; - case SADB_SATYPE_RSVP: - case SADB_SATYPE_OSPFV2: - case SADB_SATYPE_RIPV2: - case SADB_SATYPE_MIP: - ipseclog((LOG_DEBUG, "key_parse: type %u isn't supported.\n", - msg->sadb_msg_satype)); - pfkeystat.out_invsatype++; - error = EOPNOTSUPP; - goto senderror; - case 1: /* XXX: What does it do? */ - if (msg->sadb_msg_type == SADB_X_PROMISC) - break; - /*FALLTHROUGH*/ - default: - ipseclog((LOG_DEBUG, "key_parse: invalid type %u is passed.\n", - msg->sadb_msg_satype)); - 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) { + && 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++; + PFKEY_STAT_INCREMENT(pfkeystat.out_invaddr); error = EINVAL; 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++; + PFKEY_STAT_INCREMENT(pfkeystat.out_invaddr); error = EINVAL; goto senderror; } 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++; + "key_parse: address struct size mismatched.\n")); + PFKEY_STAT_INCREMENT(pfkeystat.out_invaddr); error = EINVAL; 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; + case AF_INET: + if (PFKEY_ADDR_SADDR(src0)->sa_len != + sizeof(struct sockaddr_in)) { + PFKEY_STAT_INCREMENT(pfkeystat.out_invaddr); + error = EINVAL; + goto senderror; + } + break; + case AF_INET6: + if (PFKEY_ADDR_SADDR(src0)->sa_len != + sizeof(struct sockaddr_in6)) { + PFKEY_STAT_INCREMENT(pfkeystat.out_invaddr); + error = EINVAL; + goto senderror; + } + break; + default: + ipseclog((LOG_DEBUG, + "key_parse: unsupported address family.\n")); + PFKEY_STAT_INCREMENT(pfkeystat.out_invaddr); + error = EAFNOSUPPORT; goto senderror; - } - break; - default: - ipseclog((LOG_DEBUG, - "key_parse: unsupported address family.\n")); - pfkeystat.out_invaddr++; - error = EAFNOSUPPORT; - goto senderror; } - + 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; + 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")); - pfkeystat.out_invaddr++; + "key_parse: illegal prefixlen.\n")); + PFKEY_STAT_INCREMENT(pfkeystat.out_invaddr); error = EINVAL; 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]) || key_typesw[msg->sadb_msg_type] == NULL) { - pfkeystat.out_invmsgtype++; + PFKEY_STAT_INCREMENT(pfkeystat.out_invmsgtype); error = EINVAL; goto senderror; } + + error = (*key_typesw[msg->sadb_msg_type])(so, m, &mh); - return (*key_typesw[msg->sadb_msg_type])(so, m, &mh); + return error; senderror: + if (keyAligned) { + bzero_keys(&mh); + } else { + bzero_mbuf(m); + } msg->sadb_msg_errno = 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)) panic("invalid mbuf passed to key_senderror"); - + msg = mtod(m, struct sadb_msg *); msg->sadb_msg_errno = code; return key_sendup_mbuf(so, m, KEY_SENDUP_ONE); @@ -7294,28 +9563,28 @@ key_senderror(so, m, code) * 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; int toff; - + /* sanity check */ if (m == NULL || mhp == NULL) panic("key_align: NULL pointer is passed.\n"); 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 */ - + end = PFKEY_UNUNIT64(mhp->msg->sadb_msg_len); extlen = end; /*just in case extlen is not updated*/ for (off = sizeof(struct sadb_msg); off < end; off += extlen) { @@ -7324,93 +9593,107 @@ key_align(m, mhp) /* 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_SA: - case SADB_EXT_ADDRESS_SRC: - case SADB_EXT_ADDRESS_DST: - case SADB_EXT_ADDRESS_PROXY: - case SADB_EXT_LIFETIME_CURRENT: - case SADB_EXT_LIFETIME_HARD: - case SADB_EXT_LIFETIME_SOFT: - case SADB_EXT_KEY_AUTH: - case SADB_EXT_KEY_ENCRYPT: - case SADB_EXT_IDENTITY_SRC: - case SADB_EXT_IDENTITY_DST: - case SADB_EXT_SENSITIVITY: - case SADB_EXT_PROPOSAL: - case SADB_EXT_SUPPORTED_AUTH: - case SADB_EXT_SUPPORTED_ENCRYPT: - case SADB_EXT_SPIRANGE: - case SADB_X_EXT_POLICY: - case SADB_X_EXT_SA2: - /* duplicate check */ - /* - * XXX Are there duplication payloads of either - * KEY_AUTH or KEY_ENCRYPT ? - */ - if (mhp->ext[ext->sadb_ext_type] != NULL) { + case SADB_EXT_SA: + case SADB_EXT_ADDRESS_SRC: + case SADB_EXT_ADDRESS_DST: + case SADB_EXT_ADDRESS_PROXY: + case SADB_EXT_LIFETIME_CURRENT: + case SADB_EXT_LIFETIME_HARD: + case SADB_EXT_LIFETIME_SOFT: + case SADB_EXT_KEY_AUTH: + case SADB_EXT_KEY_ENCRYPT: + case SADB_EXT_IDENTITY_SRC: + case SADB_EXT_IDENTITY_DST: + case SADB_EXT_SENSITIVITY: + case SADB_EXT_PROPOSAL: + case SADB_EXT_SUPPORTED_AUTH: + case SADB_EXT_SUPPORTED_ENCRYPT: + 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 + * KEY_AUTH or KEY_ENCRYPT ? + */ + if (mhp->ext[ext->sadb_ext_type] != NULL) { + ipseclog((LOG_DEBUG, + "key_align: duplicate ext_type %u " + "is passed.\n", ext->sadb_ext_type)); + bzero_mbuf(m); + m_freem(m); + PFKEY_STAT_INCREMENT(pfkeystat.out_dupext); + return EINVAL; + } + break; + default: ipseclog((LOG_DEBUG, - "key_align: duplicate ext_type %u " - "is passed.\n", ext->sadb_ext_type)); + "key_align: invalid ext_type %u is passed.\n", + ext->sadb_ext_type)); + bzero_mbuf(m); m_freem(m); - pfkeystat.out_dupext++; + PFKEY_STAT_INCREMENT(pfkeystat.out_invexttype); return EINVAL; - } - break; - default: - ipseclog((LOG_DEBUG, - "key_align: invalid ext_type %u is passed.\n", - ext->sadb_ext_type)); - m_freem(m); - pfkeystat.out_invexttype++; - return EINVAL; } - + extlen = PFKEY_UNUNIT64(ext->sadb_ext_len); - + if (key_validate_ext(ext, extlen)) { + bzero_mbuf(m); m_freem(m); - pfkeystat.out_invlen++; + PFKEY_STAT_INCREMENT(pfkeystat.out_invlen); return EINVAL; } - + n = m_pulldown(m, off, extlen, &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); + mhp->ext[ext->sadb_ext_type] = ext; mhp->extoff[ext->sadb_ext_type] = off; mhp->extlen[ext->sadb_ext_type] = extlen; } - + if (off != end) { + bzero_mbuf(m); m_freem(m); - pfkeystat.out_invlen++; + PFKEY_STAT_INCREMENT(pfkeystat.out_invlen); return EINVAL; } - + return 0; } 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; const int sal = offsetof(struct sockaddr, sa_len) + sizeof(sa->sa_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])) @@ -7419,88 +9702,49 @@ key_validate_ext(ext, len) return EINVAL; 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: - 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) { - baselen = PFKEY_ALIGN8(sizeof(struct sadb_ident)); + 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; - } else + break; + case SADB_EXT_IDENTITY_SRC: + case SADB_EXT_IDENTITY_DST: + 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 + checktype = NONE; + break; + default: checktype = NONE; - break; - default: - checktype = NONE; - break; + break; } - + switch (checktype) { - case NONE: - break; - case ADDR: - sa = (struct sockaddr *)((caddr_t)ext + baselen); - if (len < baselen + sal) - return EINVAL; - if (baselen + PFKEY_ALIGN8(sa->sa_len) != len) - return EINVAL; - break; - } - - return 0; -} - -void -key_domain_init() -{ - int i; - - 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; + case NONE: + break; + case ADDR: + sa = (struct sockaddr *)((caddr_t)(uintptr_t)ext + baselen); + + if (len < baselen + sal) + return EINVAL; + if (baselen + PFKEY_ALIGN8(sa->sa_len) != len) + return EINVAL; + break; + } + + return 0; } /* @@ -7512,109 +9756,45 @@ key_domain_init() * 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; +key_checktunnelsanity( + struct secasvar *sav, + __unused u_int family, + __unused caddr_t src, + __unused 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 */ - + 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) panic("key_sa_recordxfer called with sav == NULL"); if (!m) panic("key_sa_recordxfer called with m == NULL"); if (!sav->lft_c) return; - + + lck_mtx_lock(sadb_mutex); /* * XXX Currently, there is a difference of bytes size * between inbound and outbound processing. */ sav->lft_c->sadb_lifetime_bytes += m->m_pkthdr.len; /* to check bytes lifetime is done in key_timehandler(). */ - + /* * We use the number of packets as the unit of * sadb_lifetime_allocations. We increment the variable @@ -7622,7 +9802,7 @@ key_sa_recordxfer(sav, m) */ sav->lft_c->sadb_lifetime_allocations++; /* XXX check for expires? */ - + /* * NOTE: We record CURRENT sadb_lifetime_usetime by using wall clock, * in seconds. HARD and SOFT lifetime are measured by the time @@ -7635,77 +9815,78 @@ key_sa_recordxfer(sav, m) * <-----> 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; 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) panic("key_sa_chgstate called with sav == NULL"); - + if (sav->state == state) return; - + + 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); - + 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); @@ -7715,7 +9896,7 @@ key_alloc_mbuf(l) m_freem(m); return NULL; } - + n->m_next = NULL; n->m_len = 0; n->m_len = M_TRAILINGSPACE(n); @@ -7725,14 +9906,398 @@ key_alloc_mbuf(l) n->m_data += t; n->m_len = len; } - + len -= n->m_len; - + if (m) m_cat(m, n); 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; + } + + mtod(result, struct sadb_msg *)->sadb_msg_len = + 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; + u_int32_t bufsize, 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; + } + bufsize = (ipsec_sav_count + 1) * sizeof(*sa_stats_sav); + + 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; + } + res_count = 0; + + if (key_getsastatbyspi((struct sastat *)(sa_stats_arg + 1), + arg_count, + sa_stats_sav, + &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; + + mtod(result, struct sadb_msg *)->sadb_msg_len = 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); +}