1/* $KAME: keydb.h,v 1.9 2000/02/22 14:06:41 itojun Exp $ */ 2 3/* 4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#ifndef _NETKEY_KEYDB_H_ 33#define _NETKEY_KEYDB_H_ 34#include <sys/appleapiopts.h> 35 36#ifdef BSD_KERNEL_PRIVATE 37 38#include <netkey/key_var.h> 39#include <net/if_utun.h> 40 41/* Security Association Index */ 42/* NOTE: Ensure to be same address family */ 43struct secasindex { 44 struct sockaddr_storage src; /* srouce address for SA */ 45 struct sockaddr_storage dst; /* destination address for SA */ 46 u_int16_t proto; /* IPPROTO_ESP or IPPROTO_AH */ 47 u_int8_t mode; /* mode of protocol, see ipsec.h */ 48 u_int32_t reqid; /* reqid id who owned this SA */ 49 /* see IPSEC_MANUAL_REQID_MAX. */ 50 u_int ipsec_ifindex; 51}; 52 53/* Security Association Data Base */ 54struct secashead { 55 LIST_ENTRY(secashead) chain; 56 57 struct secasindex saidx; 58 59 struct sadb_ident *idents; /* source identity */ 60 struct sadb_ident *identd; /* destination identity */ 61 /* XXX I don't know how to use them. */ 62 63 ifnet_t ipsec_if; 64 u_int outgoing_if; 65 u_int8_t dir; /* IPSEC_DIR_INBOUND or IPSEC_DIR_OUTBOUND */ 66 u_int8_t state; /* MATURE or DEAD. */ 67 LIST_HEAD(_satree, secasvar) savtree[SADB_SASTATE_MAX+1]; 68 /* SA chain */ 69 /* The first of this list is newer SA */ 70 71 struct route sa_route; /* route cache */ 72}; 73 74typedef int (*utun_is_keepalive_func) __P((void *, void *, u_int16_t, u_int32_t, size_t)); 75typedef int (*utun_input_func) __P((void *, void *, protocol_family_t family)); 76 77/* Security Association */ 78struct secasvar { 79 LIST_ENTRY(secasvar) chain; 80 LIST_ENTRY(secasvar) spihash; 81 int refcnt; /* reference count */ 82 u_int8_t state; /* Status of this Association */ 83 84 u_int8_t alg_auth; /* Authentication Algorithm Identifier*/ 85 u_int8_t alg_enc; /* Cipher Algorithm Identifier */ 86 u_int32_t spi; /* SPI Value, network byte order */ 87 u_int32_t flags; /* holder for SADB_KEY_FLAGS */ 88 u_int16_t flags2; /* holder for SADB_SA2_KEY_FLAGS */ 89 90 struct sadb_key *key_auth; /* Key for Authentication */ 91 struct sadb_key *key_enc; /* Key for Encryption */ 92 caddr_t iv; /* Initilization Vector */ 93 u_int ivlen; /* length of IV */ 94 void *sched; /* intermediate encryption key */ 95 size_t schedlen; 96 97 struct secreplay *replay; /* replay prevention */ 98 long created; /* for lifetime */ 99 100 struct sadb_lifetime *lft_c; /* CURRENT lifetime, it's constant. */ 101 struct sadb_lifetime *lft_h; /* HARD lifetime */ 102 struct sadb_lifetime *lft_s; /* SOFT lifetime */ 103 104 struct socket *so; /* Associated socket */ 105 106 u_int32_t seq; /* sequence number */ 107 pid_t pid; /* message's pid */ 108 109 struct secashead *sah; /* back pointer to the secashead */ 110 111 /* Nat Traversal related bits */ 112 u_int32_t natt_last_activity; 113 u_int16_t remote_ike_port; 114 u_int16_t natt_encapsulated_src_port; /* network byte order */ 115 u_int16_t natt_interval; /* Interval in seconds */ 116 117 u_int8_t always_expire; /* Send expire/delete messages even if unused */ 118 119 void *utun_pcb; 120 utun_is_keepalive_func utun_is_keepalive_fn; 121 utun_input_func utun_in_fn; 122}; 123 124/* replay prevention */ 125struct secreplay { 126 u_int32_t count; 127 u_int wsize; /* window size, i.g. 4 bytes */ 128 u_int32_t seq; /* used by sender */ 129 u_int32_t lastseq; /* used by receiver */ 130 caddr_t bitmap; /* used by receiver */ 131 int overflow; /* overflow flag */ 132}; 133 134/* socket table due to send PF_KEY messages. */ 135struct secreg { 136 LIST_ENTRY(secreg) chain; 137 138 struct socket *so; 139}; 140 141#ifndef IPSEC_NONBLOCK_ACQUIRE 142/* acquiring list table. */ 143struct secacq { 144 LIST_ENTRY(secacq) chain; 145 146 struct secasindex saidx; 147 148 u_int32_t seq; /* sequence number */ 149 long created; /* for lifetime */ 150 int count; /* for lifetime */ 151}; 152#endif 153 154/* Sensitivity Level Specification */ 155/* nothing */ 156 157#define SADB_KILL_INTERVAL 600 /* six seconds */ 158 159struct key_cb { 160 int key_count; 161 int any_count; 162}; 163 164/* secpolicy */ 165extern struct secpolicy *keydb_newsecpolicy(void); 166extern void keydb_delsecpolicy(struct secpolicy *); 167/* secashead */ 168extern struct secashead *keydb_newsecashead(void); 169// extern void keydb_delsecashead(struct secashead *); // not used 170/* secasvar */ 171// extern struct secasvar *keydb_newsecasvar(void); // not used 172// extern void keydb_refsecasvar(struct secasvar *); // not used 173// extern void keydb_freesecasvar(struct secasvar *); // not used 174/* secreplay */ 175extern struct secreplay *keydb_newsecreplay(size_t); 176extern void keydb_delsecreplay(struct secreplay *); 177/* secreg */ 178// extern struct secreg *keydb_newsecreg(void); // not used 179// extern void keydb_delsecreg(struct secreg *); // not used 180 181#endif /* BSD_KERNEL_PRIVATE */ 182 183#endif /* _NETKEY_KEYDB_H_ */ 184