233 lines
7.3 KiB
C
233 lines
7.3 KiB
C
/* $FreeBSD$ */
|
|
/* $KAME: keydb.h,v 1.14 2000/08/02 17:58:26 sakane Exp $ */
|
|
|
|
/*-
|
|
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the project nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _NETIPSEC_KEYDB_H_
|
|
#define _NETIPSEC_KEYDB_H_
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
|
|
#include <netipsec/key_var.h>
|
|
|
|
#ifndef _SOCKADDR_UNION_DEFINED
|
|
#define _SOCKADDR_UNION_DEFINED
|
|
/*
|
|
* The union of all possible address formats we handle.
|
|
*/
|
|
union sockaddr_union {
|
|
struct sockaddr sa;
|
|
struct sockaddr_in sin;
|
|
struct sockaddr_in6 sin6;
|
|
};
|
|
#endif /* _SOCKADDR_UNION_DEFINED */
|
|
|
|
/* Security Assocciation Index */
|
|
/* NOTE: Ensure to be same address family */
|
|
struct secasindex {
|
|
union sockaddr_union src; /* source address for SA */
|
|
union sockaddr_union dst; /* destination address for SA */
|
|
u_int16_t proto; /* IPPROTO_ESP or IPPROTO_AH */
|
|
u_int8_t mode; /* mode of protocol, see ipsec.h */
|
|
u_int32_t reqid; /* reqid id who owned this SA */
|
|
/* see IPSEC_MANUAL_REQID_MAX. */
|
|
};
|
|
|
|
/*
|
|
* In order to split out the keydb implementation from that of the
|
|
* PF_KEY sockets we need to define a few structures that while they
|
|
* may seem common are likely to diverge over time.
|
|
*/
|
|
|
|
/* sadb_identity */
|
|
struct secident {
|
|
u_int16_t type;
|
|
u_int64_t id;
|
|
};
|
|
|
|
/* sadb_key */
|
|
struct seckey {
|
|
u_int16_t bits;
|
|
char *key_data;
|
|
};
|
|
|
|
struct seclifetime {
|
|
u_int32_t allocations;
|
|
u_int64_t bytes;
|
|
u_int64_t addtime;
|
|
u_int64_t usetime;
|
|
};
|
|
|
|
/* Security Association Data Base */
|
|
struct secashead {
|
|
LIST_ENTRY(secashead) chain;
|
|
|
|
struct secasindex saidx;
|
|
|
|
struct secident *idents; /* source identity */
|
|
struct secident *identd; /* destination identity */
|
|
/* XXX I don't know how to use them. */
|
|
|
|
u_int8_t state; /* MATURE or DEAD. */
|
|
LIST_HEAD(_satree, secasvar) savtree[SADB_SASTATE_MAX+1];
|
|
/* SA chain */
|
|
/* The first of this list is newer SA */
|
|
};
|
|
|
|
struct xformsw;
|
|
struct enc_xform;
|
|
struct auth_hash;
|
|
struct comp_algo;
|
|
|
|
/* Security Association */
|
|
struct secasvar {
|
|
LIST_ENTRY(secasvar) chain;
|
|
struct mtx lock; /* update/access lock */
|
|
|
|
u_int refcnt; /* reference count */
|
|
u_int8_t state; /* Status of this Association */
|
|
|
|
u_int8_t alg_auth; /* Authentication Algorithm Identifier*/
|
|
u_int8_t alg_enc; /* Cipher Algorithm Identifier */
|
|
u_int8_t alg_comp; /* Compression Algorithm Identifier */
|
|
u_int32_t spi; /* SPI Value, network byte order */
|
|
u_int32_t flags; /* holder for SADB_KEY_FLAGS */
|
|
|
|
struct seckey *key_auth; /* Key for Authentication */
|
|
struct seckey *key_enc; /* Key for Encryption */
|
|
u_int ivlen; /* length of IV */
|
|
void *sched; /* intermediate encryption key */
|
|
size_t schedlen;
|
|
uint64_t cntr; /* counter for GCM and CTR */
|
|
|
|
struct secreplay *replay; /* replay prevention */
|
|
time_t created; /* for lifetime */
|
|
|
|
struct seclifetime *lft_c; /* CURRENT lifetime, it's constant. */
|
|
struct seclifetime *lft_h; /* HARD lifetime */
|
|
struct seclifetime *lft_s; /* SOFT lifetime */
|
|
|
|
u_int32_t seq; /* sequence number */
|
|
pid_t pid; /* message's pid */
|
|
|
|
struct secashead *sah; /* back pointer to the secashead */
|
|
|
|
/*
|
|
* NB: Fields with a tdb_ prefix are part of the "glue" used
|
|
* to interface to the OpenBSD crypto support. This was done
|
|
* to distinguish this code from the mainline KAME code.
|
|
*/
|
|
struct xformsw *tdb_xform; /* transform */
|
|
struct enc_xform *tdb_encalgxform; /* encoding algorithm */
|
|
struct auth_hash *tdb_authalgxform; /* authentication algorithm */
|
|
struct comp_algo *tdb_compalgxform; /* compression algorithm */
|
|
u_int64_t tdb_cryptoid; /* crypto session id */
|
|
|
|
/*
|
|
* NAT-Traversal.
|
|
*/
|
|
u_int16_t natt_type; /* IKE/ESP-marker in output. */
|
|
u_int16_t natt_esp_frag_len; /* MTU for payload fragmentation. */
|
|
};
|
|
|
|
#define SECASVAR_LOCK_INIT(_sav) \
|
|
mtx_init(&(_sav)->lock, "ipsec association", NULL, MTX_DEF)
|
|
#define SECASVAR_LOCK(_sav) mtx_lock(&(_sav)->lock)
|
|
#define SECASVAR_UNLOCK(_sav) mtx_unlock(&(_sav)->lock)
|
|
#define SECASVAR_LOCK_DESTROY(_sav) mtx_destroy(&(_sav)->lock)
|
|
#define SECASVAR_LOCK_ASSERT(_sav) mtx_assert(&(_sav)->lock, MA_OWNED)
|
|
#define SAV_ISGCM(_sav) \
|
|
((_sav)->alg_enc == SADB_X_EALG_AESGCM8 || \
|
|
(_sav)->alg_enc == SADB_X_EALG_AESGCM12 || \
|
|
(_sav)->alg_enc == SADB_X_EALG_AESGCM16)
|
|
#define SAV_ISCTR(_sav) ((_sav)->alg_enc == SADB_X_EALG_AESCTR)
|
|
#define SAV_ISCTRORGCM(_sav) (SAV_ISCTR((_sav)) || SAV_ISGCM((_sav)))
|
|
|
|
/* Replay prevention, protected by SECASVAR_LOCK:
|
|
* (m) locked by mtx
|
|
* (c) read only except during creation / free
|
|
*/
|
|
struct secreplay {
|
|
u_int32_t count; /* (m) */
|
|
u_int wsize; /* (c) window size, i.g. 4 bytes */
|
|
u_int32_t seq; /* (m) used by sender */
|
|
u_int32_t lastseq; /* (m) used by receiver */
|
|
u_int32_t *bitmap; /* (m) used by receiver */
|
|
u_int bitmap_size; /* (c) size of the bitmap array */
|
|
int overflow; /* (m) overflow flag */
|
|
};
|
|
|
|
/* socket table due to send PF_KEY messages. */
|
|
struct secreg {
|
|
LIST_ENTRY(secreg) chain;
|
|
|
|
struct socket *so;
|
|
};
|
|
|
|
/* acquiring list table. */
|
|
struct secacq {
|
|
LIST_ENTRY(secacq) chain;
|
|
|
|
struct secasindex saidx;
|
|
|
|
u_int32_t seq; /* sequence number */
|
|
time_t created; /* for lifetime */
|
|
int count; /* for lifetime */
|
|
};
|
|
|
|
/* Sensitivity Level Specification */
|
|
/* nothing */
|
|
|
|
#define SADB_KILL_INTERVAL 600 /* six seconds */
|
|
|
|
/* secpolicy */
|
|
extern struct secpolicy *keydb_newsecpolicy(void);
|
|
extern void keydb_delsecpolicy(struct secpolicy *);
|
|
/* secashead */
|
|
extern struct secashead *keydb_newsecashead(void);
|
|
extern void keydb_delsecashead(struct secashead *);
|
|
/* secasvar */
|
|
extern struct secasvar *keydb_newsecasvar(void);
|
|
extern void keydb_refsecasvar(struct secasvar *);
|
|
extern void keydb_freesecasvar(struct secasvar *);
|
|
/* secreplay */
|
|
extern struct secreplay *keydb_newsecreplay(size_t);
|
|
extern void keydb_delsecreplay(struct secreplay *);
|
|
/* secreg */
|
|
extern struct secreg *keydb_newsecreg(void);
|
|
extern void keydb_delsecreg(struct secreg *);
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _NETIPSEC_KEYDB_H_ */
|