1 /* $NetBSD: keydb.h,v 1.13 2013/06/04 22:47:37 christos 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 #ifndef _SOCKADDR_UNION_DEFINED 46 #define _SOCKADDR_UNION_DEFINED 47 /* 48 * The union of all possible address formats we handle. 49 */ 50 union sockaddr_union { 51 struct sockaddr sa; 52 struct sockaddr_in sin; 53 struct sockaddr_in6 sin6; 54 }; 55 #endif /* _SOCKADDR_UNION_DEFINED */ 56 57 /* Security Assocciation Index */ 58 /* NOTE: Ensure to be same address family */ 59 struct secasindex { 60 union sockaddr_union src; /* source address for SA */ 61 union sockaddr_union dst; /* destination address for SA */ 62 u_int16_t proto; /* IPPROTO_ESP or IPPROTO_AH */ 63 u_int8_t mode; /* mode of protocol, see ipsec.h */ 64 u_int32_t reqid; /* reqid id who owned this SA */ 65 /* see IPSEC_MANUAL_REQID_MAX. */ 66 }; 67 68 /* Security Association Data Base */ 69 struct secashead { 70 LIST_ENTRY(secashead) chain; 71 72 struct secasindex saidx; 73 74 struct sadb_ident *idents; /* source identity */ 75 struct sadb_ident *identd; /* destination identity */ 76 /* XXX I don't know how to use them. */ 77 78 u_int8_t state; /* MATURE or DEAD. */ 79 LIST_HEAD(_satree, secasvar) savtree[SADB_SASTATE_MAX+1]; 80 /* SA chain */ 81 /* The first of this list is newer SA */ 82 83 struct route sa_route; /* route cache */ 84 }; 85 86 struct xformsw; 87 struct enc_xform; 88 struct auth_hash; 89 struct comp_algo; 90 91 /* Security Association */ 92 struct secasvar { 93 LIST_ENTRY(secasvar) chain; 94 95 u_int refcnt; /* reference count */ 96 u_int8_t state; /* Status of this Association */ 97 98 u_int8_t alg_auth; /* Authentication Algorithm Identifier*/ 99 u_int8_t alg_enc; /* Cipher Algorithm Identifier */ 100 u_int8_t alg_comp; /* Compression Algorithm Identifier */ 101 u_int32_t spi; /* SPI Value, network byte order */ 102 u_int32_t flags; /* holder for SADB_KEY_FLAGS */ 103 104 struct sadb_key *key_auth; /* Key for Authentication */ 105 struct sadb_key *key_enc; /* Key for Encryption */ 106 u_int ivlen; /* length of IV */ 107 108 struct secreplay *replay; /* replay prevention */ 109 time_t created; /* for lifetime */ 110 111 struct sadb_lifetime *lft_c; /* CURRENT lifetime, it's constant. */ 112 struct sadb_lifetime *lft_h; /* HARD lifetime */ 113 struct sadb_lifetime *lft_s; /* SOFT lifetime */ 114 115 u_int32_t seq; /* sequence number */ 116 pid_t pid; /* message's pid */ 117 118 struct secashead *sah; /* back pointer to the secashead */ 119 120 /* 121 * NB: Fields with a tdb_ prefix are part of the "glue" used 122 * to interface to the OpenBSD crypto support. This was done 123 * to distinguish this code from the mainline KAME code. 124 */ 125 const struct xformsw *tdb_xform; /* transform */ 126 const struct enc_xform *tdb_encalgxform; /* encoding algorithm */ 127 const struct auth_hash *tdb_authalgxform; /* authentication algorithm */ 128 const struct comp_algo *tdb_compalgxform; /* compression algorithm */ 129 u_int64_t tdb_cryptoid; /* crypto session id */ 130 131 u_int16_t natt_type; 132 u_int16_t esp_frag; 133 }; 134 135 /* replay prevention */ 136 struct secreplay { 137 u_int32_t count; 138 u_int wsize; /* window size, i.g. 4 bytes */ 139 u_int32_t seq; /* used by sender */ 140 u_int32_t lastseq; /* used by receiver */ 141 char *bitmap; /* used by receiver */ 142 int overflow; /* overflow flag */ 143 }; 144 145 /* socket table due to send PF_KEY messages. */ 146 struct secreg { 147 LIST_ENTRY(secreg) chain; 148 149 struct socket *so; 150 }; 151 152 #ifndef IPSEC_NONBLOCK_ACQUIRE 153 /* acquiring list table. */ 154 struct secacq { 155 LIST_ENTRY(secacq) chain; 156 157 struct secasindex saidx; 158 159 u_int32_t seq; /* sequence number */ 160 time_t created; /* for lifetime */ 161 int count; /* for lifetime */ 162 }; 163 #endif 164 165 /* Sensitivity Level Specification */ 166 /* nothing */ 167 168 #define SADB_KILL_INTERVAL 600 /* six seconds */ 169 170 /* secpolicy */ 171 struct secpolicy *keydb_newsecpolicy (void); 172 void keydb_delsecpolicy (struct secpolicy *); 173 /* secashead */ 174 struct secashead *keydb_newsecashead (void); 175 void keydb_delsecashead (struct secashead *); 176 /* secasvar */ 177 struct secasvar *keydb_newsecasvar (void); 178 void keydb_refsecasvar (struct secasvar *); 179 void keydb_freesecasvar (struct secasvar *); 180 /* secreplay */ 181 struct secreplay *keydb_newsecreplay (size_t); 182 void keydb_delsecreplay (struct secreplay *); 183 /* secreg */ 184 struct secreg *keydb_newsecreg (void); 185 void keydb_delsecreg (struct secreg *); 186 187 #endif /* _KERNEL */ 188 189 #endif /* !_NETIPSEC_KEYDB_H_ */ 190