| 1 | /* $NetBSD: keydb.h,v 1.14 2015/03/30 03:51:50 ozaki-r 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 <netipsec/key_var.h> |
| 40 | #include <net/route.h> |
| 41 | #include <netinet/in.h> |
| 42 | |
| 43 | #ifndef _SOCKADDR_UNION_DEFINED |
| 44 | #define _SOCKADDR_UNION_DEFINED |
| 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 | #endif /* _SOCKADDR_UNION_DEFINED */ |
| 54 | |
| 55 | /* Security Assocciation Index */ |
| 56 | /* NOTE: Ensure to be same address family */ |
| 57 | struct secasindex { |
| 58 | union sockaddr_union src; /* source address for SA */ |
| 59 | union sockaddr_union dst; /* destination address for SA */ |
| 60 | u_int16_t proto; /* IPPROTO_ESP or IPPROTO_AH */ |
| 61 | u_int8_t mode; /* mode of protocol, see ipsec.h */ |
| 62 | u_int32_t reqid; /* reqid id who owned this SA */ |
| 63 | /* see IPSEC_MANUAL_REQID_MAX. */ |
| 64 | }; |
| 65 | |
| 66 | /* Security Association Data Base */ |
| 67 | struct secashead { |
| 68 | LIST_ENTRY(secashead) chain; |
| 69 | |
| 70 | struct secasindex saidx; |
| 71 | |
| 72 | struct sadb_ident *idents; /* source identity */ |
| 73 | struct sadb_ident *identd; /* destination identity */ |
| 74 | /* XXX I don't know how to use them. */ |
| 75 | |
| 76 | u_int8_t state; /* MATURE or DEAD. */ |
| 77 | LIST_HEAD(_satree, secasvar) savtree[SADB_SASTATE_MAX+1]; |
| 78 | /* SA chain */ |
| 79 | /* The first of this list is newer SA */ |
| 80 | |
| 81 | struct route sa_route; /* route cache */ |
| 82 | }; |
| 83 | |
| 84 | struct xformsw; |
| 85 | struct enc_xform; |
| 86 | struct auth_hash; |
| 87 | struct comp_algo; |
| 88 | |
| 89 | /* Security Association */ |
| 90 | struct secasvar { |
| 91 | LIST_ENTRY(secasvar) chain; |
| 92 | |
| 93 | u_int refcnt; /* reference count */ |
| 94 | u_int8_t state; /* Status of this Association */ |
| 95 | |
| 96 | u_int8_t alg_auth; /* Authentication Algorithm Identifier*/ |
| 97 | u_int8_t alg_enc; /* Cipher Algorithm Identifier */ |
| 98 | u_int8_t alg_comp; /* Compression Algorithm Identifier */ |
| 99 | u_int32_t spi; /* SPI Value, network byte order */ |
| 100 | u_int32_t flags; /* holder for SADB_KEY_FLAGS */ |
| 101 | |
| 102 | struct sadb_key *key_auth; /* Key for Authentication */ |
| 103 | struct sadb_key *key_enc; /* Key for Encryption */ |
| 104 | u_int ivlen; /* length of IV */ |
| 105 | |
| 106 | struct secreplay *replay; /* replay prevention */ |
| 107 | time_t created; /* for lifetime */ |
| 108 | |
| 109 | struct sadb_lifetime *lft_c; /* CURRENT lifetime, it's constant. */ |
| 110 | struct sadb_lifetime *lft_h; /* HARD lifetime */ |
| 111 | struct sadb_lifetime *lft_s; /* SOFT lifetime */ |
| 112 | |
| 113 | u_int32_t seq; /* sequence number */ |
| 114 | pid_t pid; /* message's pid */ |
| 115 | |
| 116 | struct secashead *sah; /* back pointer to the secashead */ |
| 117 | |
| 118 | /* |
| 119 | * NB: Fields with a tdb_ prefix are part of the "glue" used |
| 120 | * to interface to the OpenBSD crypto support. This was done |
| 121 | * to distinguish this code from the mainline KAME code. |
| 122 | */ |
| 123 | const struct xformsw *tdb_xform; /* transform */ |
| 124 | const struct enc_xform *tdb_encalgxform; /* encoding algorithm */ |
| 125 | const struct auth_hash *tdb_authalgxform; /* authentication algorithm */ |
| 126 | const struct comp_algo *tdb_compalgxform; /* compression algorithm */ |
| 127 | u_int64_t tdb_cryptoid; /* crypto session id */ |
| 128 | |
| 129 | u_int16_t natt_type; |
| 130 | u_int16_t esp_frag; |
| 131 | }; |
| 132 | |
| 133 | /* replay prevention */ |
| 134 | struct secreplay { |
| 135 | u_int32_t count; |
| 136 | u_int wsize; /* window size, i.g. 4 bytes */ |
| 137 | u_int32_t seq; /* used by sender */ |
| 138 | u_int32_t lastseq; /* used by receiver */ |
| 139 | char *bitmap; /* used by receiver */ |
| 140 | int overflow; /* overflow flag */ |
| 141 | }; |
| 142 | |
| 143 | /* socket table due to send PF_KEY messages. */ |
| 144 | struct secreg { |
| 145 | LIST_ENTRY(secreg) chain; |
| 146 | |
| 147 | struct socket *so; |
| 148 | }; |
| 149 | |
| 150 | #ifndef IPSEC_NONBLOCK_ACQUIRE |
| 151 | /* acquiring list table. */ |
| 152 | struct secacq { |
| 153 | LIST_ENTRY(secacq) chain; |
| 154 | |
| 155 | struct secasindex saidx; |
| 156 | |
| 157 | u_int32_t seq; /* sequence number */ |
| 158 | time_t created; /* for lifetime */ |
| 159 | int count; /* for lifetime */ |
| 160 | }; |
| 161 | #endif |
| 162 | |
| 163 | /* Sensitivity Level Specification */ |
| 164 | /* nothing */ |
| 165 | |
| 166 | #define SADB_KILL_INTERVAL 600 /* six seconds */ |
| 167 | |
| 168 | /* secpolicy */ |
| 169 | struct secpolicy *keydb_newsecpolicy (void); |
| 170 | void keydb_delsecpolicy (struct secpolicy *); |
| 171 | /* secashead */ |
| 172 | struct secashead *keydb_newsecashead (void); |
| 173 | void keydb_delsecashead (struct secashead *); |
| 174 | /* secasvar */ |
| 175 | struct secasvar *keydb_newsecasvar (void); |
| 176 | void keydb_refsecasvar (struct secasvar *); |
| 177 | void keydb_freesecasvar (struct secasvar *); |
| 178 | /* secreplay */ |
| 179 | struct secreplay *keydb_newsecreplay (size_t); |
| 180 | void keydb_delsecreplay (struct secreplay *); |
| 181 | /* secreg */ |
| 182 | struct secreg *keydb_newsecreg (void); |
| 183 | void keydb_delsecreg (struct secreg *); |
| 184 | |
| 185 | #endif /* _KERNEL */ |
| 186 | |
| 187 | #endif /* !_NETIPSEC_KEYDB_H_ */ |
| 188 | |