policy.h revision 0a1907d434839af6a9cb6329bbde60b237bf53dc
1cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng/* $NetBSD: policy.h,v 1.5.4.2 2007/06/07 20:34:19 manu Exp $ */ 2cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 3cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng/* Id: policy.h,v 1.5 2004/06/11 16:00:17 ludvigm Exp */ 4cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 5cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng/* 6cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 7cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * All rights reserved. 8cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * 9cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * Redistribution and use in source and binary forms, with or without 10cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * modification, are permitted provided that the following conditions 11cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * are met: 12cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * 1. Redistributions of source code must retain the above copyright 13cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * notice, this list of conditions and the following disclaimer. 14cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * 2. Redistributions in binary form must reproduce the above copyright 15cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * notice, this list of conditions and the following disclaimer in the 16cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * documentation and/or other materials provided with the distribution. 17cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * 3. Neither the name of the project nor the names of its contributors 18cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * may be used to endorse or promote products derived from this software 19cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * without specific prior written permission. 20cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * 21cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 22cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 25cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * SUCH DAMAGE. 32cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng */ 33cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 34cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng#ifndef _POLICY_H 35cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng#define _POLICY_H 36cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 37cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng#include <sys/queue.h> 38cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 39cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 40cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng#ifdef HAVE_SECCTX 41cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng#define MAX_CTXSTR_SIZE 50 42cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Chengstruct security_ctx { 43cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng u_int8_t ctx_doi; /* Security Context DOI */ 44cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng u_int8_t ctx_alg; /* Security Context Algorithm */ 45cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng u_int16_t ctx_strlen; /* Security Context stringlength 46cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * (includes terminating NULL) 47cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng */ 48cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng char ctx_str[MAX_CTXSTR_SIZE]; /* Security Context string */ 49cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng}; 50cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng#endif 51cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 52cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng/* refs. ipsec.h */ 53cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng/* 54cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * Security Policy Index 55cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * NOTE: Ensure to be same address family and upper layer protocol. 56cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * NOTE: ul_proto, port number, uid, gid: 57cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * ANY: reserved for waldcard. 58cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng * 0 to (~0 - 1): is one of the number of each value. 59cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng */ 60cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Chengstruct policyindex { 61cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng u_int8_t dir; /* direction of packet flow, see blow */ 62cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng struct sockaddr_storage src; /* IP src address for SP */ 63cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng struct sockaddr_storage dst; /* IP dst address for SP */ 64cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng u_int8_t prefs; /* prefix length in bits for src */ 65cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng u_int8_t prefd; /* prefix length in bits for dst */ 66cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng u_int16_t ul_proto; /* upper layer Protocol */ 67cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng u_int32_t priority; /* priority for the policy */ 68cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng u_int64_t created; /* Used for generated SPD entries deletion */ 69cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng#ifdef HAVE_SECCTX 70cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng struct security_ctx sec_ctx; /* Security Context */ 71cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng#endif 72cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng}; 73cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 74cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng/* Security Policy Data Base */ 75cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Chengstruct secpolicy { 76cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng TAILQ_ENTRY(secpolicy) chain; 77cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 78cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng struct policyindex spidx; /* selector */ 79cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng u_int32_t id; /* It's unique number on the system. */ 80cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 81cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng u_int policy; /* DISCARD, NONE or IPSEC, see keyv2.h */ 82cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng struct ipsecrequest *req; 83cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng /* pointer to the ipsec request tree, */ 84cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng /* if policy == IPSEC else this value == NULL.*/ 85cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng}; 86cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 87cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng/* Security Assocciation Index */ 88cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng/* NOTE: Ensure to be same address family */ 89cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Chengstruct secasindex { 90cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng struct sockaddr_storage src; /* srouce address for SA */ 91cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng struct sockaddr_storage dst; /* destination address for SA */ 92cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng u_int16_t proto; /* IPPROTO_ESP or IPPROTO_AH */ 93cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng u_int8_t mode; /* mode of protocol, see ipsec.h */ 94cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng u_int32_t reqid; /* reqid id who owned this SA */ 95cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng /* see IPSEC_MANUAL_REQID_MAX. */ 96cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng}; 97cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 98cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng/* Request for IPsec */ 99cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Chengstruct ipsecrequest { 100cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng struct ipsecrequest *next; 101cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng /* pointer to next structure */ 102cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng /* If NULL, it means the end of chain. */ 103cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 104cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng struct secasindex saidx;/* hint for search proper SA */ 105cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng /* if __ss_len == 0 then no address specified.*/ 106cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng u_int level; /* IPsec level defined below. */ 107cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 108cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng struct secpolicy *sp; /* back pointer to SP */ 109cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng}; 110cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng 111cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng#ifdef HAVE_PFKEY_POLICY_PRIORITY 112cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng#define KEY_SETSECSPIDX(_dir, s, d, ps, pd, ulp, _priority, _created, idx) \ 113cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Chengdo { \ 114cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng bzero((idx), sizeof(struct policyindex)); \ 115cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng (idx)->dir = (_dir); \ 116cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng (idx)->prefs = (ps); \ 117cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng (idx)->prefd = (pd); \ 118cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng (idx)->ul_proto = (ulp); \ 119cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng (idx)->priority = (_priority); \ 120cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng (idx)->created = (_created); \ 121cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng memcpy(&(idx)->src, (s), sysdep_sa_len((struct sockaddr *)(s))); \ 122cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng memcpy(&(idx)->dst, (d), sysdep_sa_len((struct sockaddr *)(d))); \ 123cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng} while (0) 124cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng#else 125cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Cheng#define KEY_SETSECSPIDX(_dir, s, d, ps, pd, ulp, _created, idx) \ 126cc6695e2684ce93cdf8bd2da63d55d2cf49ff076Ben Chengdo { \ 127 bzero((idx), sizeof(struct policyindex)); \ 128 (idx)->dir = (_dir); \ 129 (idx)->prefs = (ps); \ 130 (idx)->prefd = (pd); \ 131 (idx)->ul_proto = (ulp); \ 132 (idx)->created = (_created); \ 133 memcpy(&(idx)->src, (s), sysdep_sa_len((struct sockaddr *)(s))); \ 134 memcpy(&(idx)->dst, (d), sysdep_sa_len((struct sockaddr *)(d))); \ 135} while (0) 136#endif 137 138struct ph2handle; 139struct policyindex; 140extern struct secpolicy *getsp __P((struct policyindex *)); 141extern struct secpolicy *getsp_r __P((struct policyindex *)); 142struct secpolicy *getspbyspid __P((u_int32_t)); 143extern int cmpspidxstrict __P((struct policyindex *, struct policyindex *)); 144extern int cmpspidxwild __P((struct policyindex *, struct policyindex *)); 145extern struct secpolicy *newsp __P((void)); 146extern void delsp __P((struct secpolicy *)); 147extern void delsp_bothdir __P((struct policyindex *)); 148extern void inssp __P((struct secpolicy *)); 149extern void remsp __P((struct secpolicy *)); 150extern void flushsp __P((void)); 151extern void initsp __P((void)); 152extern struct ipsecrequest *newipsecreq __P((void)); 153 154extern const char *spidx2str __P((const struct policyindex *)); 155#ifdef HAVE_SECCTX 156#include <selinux/selinux.h> 157extern int get_security_context __P((vchar_t *, struct policyindex *)); 158extern void init_avc __P((void)); 159extern int within_range __P((security_context_t, security_context_t)); 160extern void set_secctx_in_proposal __P((struct ph2handle *, struct policyindex)); 161#endif 162 163#endif /* _POLICY_H */ 164