1 /* $NetBSD: keydb.h,v 1.10 2011/05/23 15:17:25 drochner Exp $ */ 2 /* $FreeBSD: src/sys/netipsec/keydb.h,v 1.1.4.1 2003/01/24 05:11:36 sam Exp $ */ 3 /* $KAME: keydb.h,v 1.14 2000/08/02 17:58:26 sakane Exp $ */ 4 5 /* 6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the project nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef _NETIPSEC_KEYDB_H_ 35 #define _NETIPSEC_KEYDB_H_ 36 37 #ifdef _KERNEL 38 39 #include "opt_ipsec.h" 40 41 #include <netipsec/key_var.h> 42 #include <net/route.h> 43 #include <netinet/in.h> 44 45 /* 46 * The union of all possible address formats we handle. 47 */ 48 union sockaddr_union { 49 struct sockaddr sa; 50 struct sockaddr_in sin; 51 struct sockaddr_in6 sin6; 52 }; 53 54 /* Security Assocciation Index */ 55 /* NOTE: Ensure to be same address family */ 56 struct secasindex { 57 union sockaddr_union src; /* source address for SA */ 58 union sockaddr_union dst; /* destination address for SA */ 59 u_int16_t proto; /* IPPROTO_ESP or IPPROTO_AH */ 60 u_int8_t mode; /* mode of protocol, see ipsec.h */ 61 u_int32_t reqid; /* reqid id who owned this SA */ 62 /* see IPSEC_MANUAL_REQID_MAX. */ 63 }; 64 65 /* Security Association Data Base */ 66 struct secashead { 67 LIST_ENTRY(secashead) chain; 68 69 struct secasindex saidx; 70 71 struct sadb_ident *idents; /* source identity */ 72 struct sadb_ident *identd; /* destination identity */ 73 /* XXX I don't know how to use them. */ 74 75 u_int8_t state; /* MATURE or DEAD. */ 76 LIST_HEAD(_satree, secasvar) savtree[SADB_SASTATE_MAX+1]; 77 /* SA chain */ 78 /* The first of this list is newer SA */ 79 80 struct route sa_route; /* route cache */ 81 }; 82 83 struct xformsw; 84 struct enc_xform; 85 struct auth_hash; 86 struct comp_algo; 87 88 /* Security Association */ 89 struct secasvar { 90 LIST_ENTRY(secasvar) chain; 91 92 u_int refcnt; /* reference count */ 93 u_int8_t state; /* Status of this Association */ 94 95 u_int8_t alg_auth; /* Authentication Algorithm Identifier*/ 96 u_int8_t alg_enc; /* Cipher Algorithm Identifier */ 97 u_int8_t alg_comp; /* Compression Algorithm Identifier */ 98 u_int32_t spi; /* SPI Value, network byte order */ 99 u_int32_t flags; /* holder for SADB_KEY_FLAGS */ 100 101 struct sadb_key *key_auth; /* Key for Authentication */ 102 struct sadb_key *key_enc; /* Key for Encryption */ 103 u_int ivlen; /* length of IV */ 104 void *sched; /* intermediate encryption key */ 105 size_t schedlen; 106 107 struct secreplay *replay; /* replay prevention */ 108 time_t created; /* for lifetime */ 109 110 struct sadb_lifetime *lft_c; /* CURRENT lifetime, it's constant. */ 111 struct sadb_lifetime *lft_h; /* HARD lifetime */ 112 struct sadb_lifetime *lft_s; /* SOFT lifetime */ 113 114 u_int32_t seq; /* sequence number */ 115 pid_t pid; /* message's pid */ 116 117 struct secashead *sah; /* back pointer to the secashead */ 118 119 /* 120 * NB: Fields with a tdb_ prefix are part of the "glue" used 121 * to interface to the OpenBSD crypto support. This was done 122 * to distinguish this code from the mainline KAME code. 123 */ 124 const struct xformsw *tdb_xform; /* transform */ 125 const struct enc_xform *tdb_encalgxform; /* encoding algorithm */ 126 const struct auth_hash *tdb_authalgxform; /* authentication algorithm */ 127 const struct comp_algo *tdb_compalgxform; /* compression algorithm */ 128 u_int64_t tdb_cryptoid; /* crypto session id */ 129 130 #ifdef IPSEC_NAT_T 131 u_int16_t natt_type; 132 u_int16_t esp_frag; 133 #endif 134 }; 135 136 /* replay prevention */ 137 struct secreplay { 138 u_int32_t count; 139 u_int wsize; /* window size, i.g. 4 bytes */ 140 u_int32_t seq; /* used by sender */ 141 u_int32_t lastseq; /* used by receiver */ 142 char *bitmap; /* used by receiver */ 143 int overflow; /* overflow flag */ 144 }; 145 146 /* socket table due to send PF_KEY messages. */ 147 struct secreg { 148 LIST_ENTRY(secreg) chain; 149 150 struct socket *so; 151 }; 152 153 #ifndef IPSEC_NONBLOCK_ACQUIRE 154 /* acquiring list table. */ 155 struct secacq { 156 LIST_ENTRY(secacq) chain; 157 158 struct secasindex saidx; 159 160 u_int32_t seq; /* sequence number */ 161 time_t created; /* for lifetime */ 162 int count; /* for lifetime */ 163 }; 164 #endif 165 166 /* Sensitivity Level Specification */ 167 /* nothing */ 168 169 #define SADB_KILL_INTERVAL 600 /* six seconds */ 170 171 /* secpolicy */ 172 struct secpolicy *keydb_newsecpolicy (void); 173 void keydb_delsecpolicy (struct secpolicy *); 174 /* secashead */ 175 struct secashead *keydb_newsecashead (void); 176 void keydb_delsecashead (struct secashead *); 177 /* secasvar */ 178 struct secasvar *keydb_newsecasvar (void); 179 void keydb_refsecasvar (struct secasvar *); 180 void keydb_freesecasvar (struct secasvar *); 181 /* secreplay */ 182 struct secreplay *keydb_newsecreplay (size_t); 183 void keydb_delsecreplay (struct secreplay *); 184 /* secreg */ 185 struct secreg *keydb_newsecreg (void); 186 void keydb_delsecreg (struct secreg *); 187 188 #endif /* _KERNEL */ 189 190 #endif /* !_NETIPSEC_KEYDB_H_ */ 191