1 /* $FreeBSD$ */ 2 /* $KAME: keydb.h,v 1.14 2000/08/02 17:58:26 sakane Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef _NETIPSEC_KEYDB_H_ 34 #define _NETIPSEC_KEYDB_H_ 35 36 #ifdef _KERNEL 37 38 #include <netipsec/key_var.h> 39 40 /* 41 * The union of all possible address formats we handle. 42 */ 43 union sockaddr_union { 44 struct sockaddr sa; 45 struct sockaddr_in sin; 46 struct sockaddr_in6 sin6; 47 }; 48 49 /* Security Assocciation Index */ 50 /* NOTE: Ensure to be same address family */ 51 struct secasindex { 52 union sockaddr_union src; /* srouce address for SA */ 53 union sockaddr_union dst; /* destination address for SA */ 54 u_int16_t proto; /* IPPROTO_ESP or IPPROTO_AH */ 55 u_int8_t mode; /* mode of protocol, see ipsec.h */ 56 u_int32_t reqid; /* reqid id who owned this SA */ 57 /* see IPSEC_MANUAL_REQID_MAX. */ 58 }; 59 60 /* Security Association Data Base */ 61 struct secashead { 62 LIST_ENTRY(secashead) chain; 63 64 struct secasindex saidx; 65 66 struct sadb_ident *idents; /* source identity */ 67 struct sadb_ident *identd; /* destination identity */ 68 /* XXX I don't know how to use them. */ 69 70 u_int8_t state; /* MATURE or DEAD. */ 71 LIST_HEAD(_satree, secasvar) savtree[SADB_SASTATE_MAX+1]; 72 /* SA chain */ 73 /* The first of this list is newer SA */ 74 75 struct route sa_route; /* route cache */ 76 }; 77 78 struct xformsw; 79 struct enc_xform; 80 struct auth_hash; 81 struct comp_algo; 82 83 /* Security Association */ 84 struct secasvar { 85 LIST_ENTRY(secasvar) chain; 86 87 u_int refcnt; /* reference count */ 88 u_int8_t state; /* Status of this Association */ 89 90 u_int8_t alg_auth; /* Authentication Algorithm Identifier*/ 91 u_int8_t alg_enc; /* Cipher Algorithm Identifier */ 92 u_int8_t alg_comp; /* Compression Algorithm Identifier */ 93 u_int32_t spi; /* SPI Value, network byte order */ 94 u_int32_t flags; /* holder for SADB_KEY_FLAGS */ 95 96 struct sadb_key *key_auth; /* Key for Authentication */ 97 struct sadb_key *key_enc; /* Key for Encryption */ 98 caddr_t iv; /* Initilization Vector */ 99 u_int ivlen; /* length of IV */ 100 void *sched; /* intermediate encryption key */ 101 size_t schedlen; 102 103 struct secreplay *replay; /* replay prevention */ 104 long created; /* for lifetime */ 105 106 struct sadb_lifetime *lft_c; /* CURRENT lifetime, it's constant. */ 107 struct sadb_lifetime *lft_h; /* HARD lifetime */ 108 struct sadb_lifetime *lft_s; /* SOFT lifetime */ 109 110 u_int32_t seq; /* sequence number */ 111 pid_t pid; /* message's pid */ 112 113 struct secashead *sah; /* back pointer to the secashead */ 114 115 /* 116 * NB: Fields with a tdb_ prefix are part of the "glue" used 117 * to interface to the OpenBSD crypto support. This was done 118 * to distinguish this code from the mainline KAME code. 119 */ 120 struct xformsw *tdb_xform; /* transform */ 121 struct enc_xform *tdb_encalgxform; /* encoding algorithm */ 122 struct auth_hash *tdb_authalgxform; /* authentication algorithm */ 123 struct comp_algo *tdb_compalgxform; /* compression algorithm */ 124 u_int64_t tdb_cryptoid; /* crypto session id */ 125 }; 126 127 /* replay prevention */ 128 struct secreplay { 129 u_int32_t count; 130 u_int wsize; /* window size, i.g. 4 bytes */ 131 u_int32_t seq; /* used by sender */ 132 u_int32_t lastseq; /* used by receiver */ 133 caddr_t bitmap; /* used by receiver */ 134 int overflow; /* overflow flag */ 135 }; 136 137 /* socket table due to send PF_KEY messages. */ 138 struct secreg { 139 LIST_ENTRY(secreg) chain; 140 141 struct socket *so; 142 }; 143 144 #ifndef IPSEC_NONBLOCK_ACQUIRE 145 /* acquiring list table. */ 146 struct secacq { 147 LIST_ENTRY(secacq) chain; 148 149 struct secasindex saidx; 150 151 u_int32_t seq; /* sequence number */ 152 long created; /* for lifetime */ 153 int count; /* for lifetime */ 154 }; 155 #endif 156 157 /* Sensitivity Level Specification */ 158 /* nothing */ 159 160 #define SADB_KILL_INTERVAL 600 /* six seconds */ 161 162 /* secpolicy */ 163 extern struct secpolicy *keydb_newsecpolicy __P((void)); 164 extern void keydb_delsecpolicy __P((struct secpolicy *)); 165 /* secashead */ 166 extern struct secashead *keydb_newsecashead __P((void)); 167 extern void keydb_delsecashead __P((struct secashead *)); 168 /* secasvar */ 169 extern struct secasvar *keydb_newsecasvar __P((void)); 170 extern void keydb_refsecasvar __P((struct secasvar *)); 171 extern void keydb_freesecasvar __P((struct secasvar *)); 172 /* secreplay */ 173 extern struct secreplay *keydb_newsecreplay __P((size_t)); 174 extern void keydb_delsecreplay __P((struct secreplay *)); 175 /* secreg */ 176 extern struct secreg *keydb_newsecreg __P((void)); 177 extern void keydb_delsecreg __P((struct secreg *)); 178 179 #endif /* _KERNEL */ 180 181 #endif /* _NETIPSEC_KEYDB_H_ */ 182