191 lines
6.7 KiB
C
191 lines
6.7 KiB
C
/* $KAME: keydb.h,v 1.9 2000/02/22 14:06:41 itojun Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _NETKEY_KEYDB_H_
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#define _NETKEY_KEYDB_H_
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#include <sys/appleapiopts.h>
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#ifdef BSD_KERNEL_PRIVATE
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#include <netkey/key_var.h>
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/* Security Association Index */
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/* NOTE: Ensure to be same address family */
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struct secasindex {
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struct sockaddr_storage src; /* srouce address for SA */
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struct sockaddr_storage dst; /* destination address for SA */
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u_int16_t proto; /* IPPROTO_ESP or IPPROTO_AH */
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u_int8_t mode; /* mode of protocol, see ipsec.h */
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u_int32_t reqid; /* reqid id who owned this SA */
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/* see IPSEC_MANUAL_REQID_MAX. */
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u_int ipsec_ifindex;
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};
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#define SECURITY_ASSOCIATION_ANY 0x0000
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#define SECURITY_ASSOCIATION_PFKEY 0x0001
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#define SECURITY_ASSOCIATION_CUSTOM_IPSEC 0x0010
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/* Security Association Data Base */
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struct secashead {
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LIST_ENTRY(secashead) chain;
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struct secasindex saidx;
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ifnet_t ipsec_if;
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u_int outgoing_if;
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u_int8_t dir; /* IPSEC_DIR_INBOUND or IPSEC_DIR_OUTBOUND */
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u_int8_t state; /* MATURE or DEAD. */
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LIST_HEAD(_satree, secasvar) savtree[SADB_SASTATE_MAX + 1];
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/* SA chain */
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/* The first of this list is newer SA */
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struct route_in6 sa_route; /* route cache */
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uint16_t flags;
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u_int32_t use_count;
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};
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#define MAX_REPLAY_WINDOWS 4
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#define PER_TC_REPLAY_WINDOW_RANGE ((1ULL << 32) / MAX_REPLAY_WINDOWS)
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#define PER_TC_REPLAY_WINDOW_SN_SHIFT 30
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/* Security Association */
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struct secasvar {
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LIST_ENTRY(secasvar) chain;
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LIST_ENTRY(secasvar) spihash;
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int refcnt; /* reference count */
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u_int8_t state; /* Status of this Association */
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u_int8_t alg_auth; /* Authentication Algorithm Identifier*/
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u_int8_t alg_enc; /* Cipher Algorithm Identifier */
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u_int32_t spi; /* SPI Value, network byte order */
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u_int32_t flags; /* holder for SADB_KEY_FLAGS */
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u_int16_t flags2; /* holder for SADB_SA2_KEY_FLAGS */
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struct sadb_key *key_auth; /* Key for Authentication */
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struct sadb_key *key_enc; /* Key for Encryption */
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caddr_t iv; /* Initialization Vector */
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u_int ivlen; /* length of IV */
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void *sched_auth; /* intermediate authentication key */
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void *sched_enc; /* intermediate encryption key */
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size_t schedlen_auth;
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size_t schedlen_enc;
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struct secreplay *replay[MAX_REPLAY_WINDOWS]; /* replay prevention */
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u_int64_t created; /* for lifetime */
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struct sadb_lifetime *lft_c; /* CURRENT lifetime, it's constant. */
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struct sadb_lifetime *lft_h; /* HARD lifetime */
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struct sadb_lifetime *lft_s; /* SOFT lifetime */
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struct socket *so; /* Associated socket */
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u_int32_t seq; /* sequence number */
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pid_t pid; /* message's pid */
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struct secashead *sah; /* back pointer to the secashead */
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/* Nat Traversal related bits */
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u_int64_t natt_last_activity;
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u_int16_t remote_ike_port;
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u_int16_t natt_encapsulated_src_port; /* network byte order */
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u_int16_t natt_interval; /* Interval in seconds */
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u_int16_t natt_offload_interval; /* Hardware Offload Interval in seconds */
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/*
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* Globally unique flow identifier for the SA.
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* Added on outgoing packets by the IPSec driver.
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*/
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uint32_t flowid;
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u_int8_t always_expire; /* Send expire/delete messages even if unused */
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};
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/* replay prevention */
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struct secreplay {
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u_int8_t wsize; /* window size */
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u_int32_t count; /* used by sender/receiver */
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u_int32_t seq; /* used by sender/receiver */
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u_int32_t lastseq; /* used by sender/receiver */
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caddr_t bitmap; /* used by receiver */
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int overflow; /* overflow flag */
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};
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/* socket table due to send PF_KEY messages. */
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struct secreg {
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LIST_ENTRY(secreg) chain;
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struct socket *so;
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};
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#ifndef IPSEC_NONBLOCK_ACQUIRE
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/* acquiring list table. */
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struct secacq {
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LIST_ENTRY(secacq) chain;
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struct secasindex saidx;
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u_int32_t seq; /* sequence number */
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u_int64_t created; /* for lifetime */
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int count; /* for lifetime */
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};
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#endif
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/* Sensitivity Level Specification */
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/* nothing */
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#define SADB_KILL_INTERVAL 600 /* six seconds */
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struct key_cb {
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int key_count;
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int any_count;
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};
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/* secpolicy */
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extern struct secpolicy *keydb_newsecpolicy(void);
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extern void keydb_delsecpolicy(struct secpolicy *);
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/* secashead */
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extern struct secashead *keydb_newsecashead(void);
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// extern void keydb_delsecashead(struct secashead *); // not used
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/* secasvar */
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// extern struct secasvar *keydb_newsecasvar(void); // not used
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// extern void keydb_refsecasvar(struct secasvar *); // not used
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// extern void keydb_freesecasvar(struct secasvar *); // not used
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/* secreplay */
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extern struct secreplay *keydb_newsecreplay(u_int8_t);
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extern void keydb_delsecreplay(struct secreplay *);
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/* secreg */
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// extern struct secreg *keydb_newsecreg(void); // not used
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// extern void keydb_delsecreg(struct secreg *); // not used
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#endif /* BSD_KERNEL_PRIVATE */
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#endif /* _NETKEY_KEYDB_H_ */
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