181 lines
5.5 KiB
C
181 lines
5.5 KiB
C
/* $NetBSD: keydb.h,v 1.29 2009/03/14 14:46:11 dsl Exp $ */
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/* $KAME: keydb.h,v 1.23 2003/09/07 05:25:20 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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#ifdef _KERNEL
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#if defined(_KERNEL_OPT)
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#include "opt_ipsec.h"
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#endif
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#include <sys/mallocvar.h>
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#include <netkey/key_var.h>
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MALLOC_DECLARE(M_SECA);
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/* Security Assocciation 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_int16_t reqid; /* reqid id who owned this SA */
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/* see IPSEC_MANUAL_REQID_MAX. */
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};
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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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struct sadb_ident *idents; /* source identity */
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struct sadb_ident *identd; /* destination identity */
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/* XXX I don't know how to use them. */
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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 sa_route;
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};
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/* Security Association */
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struct secasvar {
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TAILQ_ENTRY(secasvar) tailq;
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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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struct sadb_key *key_auth; /* Key for Authentication */
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struct sadb_key *key_enc; /* Key for Encryption */
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void *iv; /* Initilization Vector */
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u_int ivlen; /* length of IV */
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void *sched; /* intermediate encryption key */
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size_t schedlen;
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struct secreplay *replay; /* replay prevention */
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long 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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u_int64_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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u_int32_t id; /* SA id */
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/* Nat-Traversal state */
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#ifdef IPSEC_NAT_T
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u_int16_t natt_type;
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u_int16_t esp_frag;
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#endif
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};
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/* replay prevention */
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struct secreplay {
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u_int64_t count;
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u_int wsize; /* window size, i.g. 4 bytes */
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u_int64_t seq; /* used by sender */
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u_int64_t lastseq; /* used by receiver */
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u_int8_t *bitmap; /* used by receiver */
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int overflow; /* what round does the counter take. */
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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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long 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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struct secpolicy;
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struct secpolicyindex;
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extern struct secpolicy *keydb_newsecpolicy(void);
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extern u_int32_t keydb_newspid(void);
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extern void keydb_delsecpolicy(struct secpolicy *);
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extern int keydb_setsecpolicyindex
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(struct secpolicy *, struct secpolicyindex *);
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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 *);
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/* secasvar */
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extern struct secasvar *keydb_newsecasvar(void);
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extern void keydb_delsecasvar(struct secasvar *);
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/* secreplay */
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extern struct secreplay *keydb_newsecreplay(size_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);
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extern void keydb_delsecreg(struct secreg *);
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#endif /* _KERNEL */
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#endif /* !_NETKEY_KEYDB_H_ */
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