321 lines
9.8 KiB
C
321 lines
9.8 KiB
C
/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* IPsec controller part.
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*/
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#ifndef _NETINET6_IPSEC_H_
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#define _NETINET6_IPSEC_H_
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#include <net/pfkeyv2.h>
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#include <netkey/keydb.h>
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#ifdef _KERNEL
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/*
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* Security Policy Index
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* NOTE: Encure to be same address family and upper layer protocol.
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* NOTE: ul_proto, port number, uid, gid:
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* ANY: reserved for waldcard.
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* 0 to (~0 - 1): is one of the number of each value.
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*/
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struct secpolicyindex {
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u_int8_t dir; /* direction of packet flow, see blow */
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struct sockaddr_storage src; /* IP src address for SP */
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struct sockaddr_storage dst; /* IP dst address for SP */
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u_int8_t prefs; /* prefix length in bits for src */
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u_int8_t prefd; /* prefix length in bits for dst */
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u_int16_t ul_proto; /* upper layer Protocol */
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};
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/* Security Policy Data Base */
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struct secpolicy {
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LIST_ENTRY(secpolicy) chain;
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int refcnt; /* reference count */
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struct secpolicyindex spidx; /* selector */
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u_int state; /* 0: dead, others: alive */
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#define IPSEC_SPSTATE_DEAD 0
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#define IPSEC_SPSTATE_ALIVE 1
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u_int policy; /* DISCARD, NONE or IPSEC, see keyv2.h */
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struct ipsecrequest *req;
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/* pointer to the ipsec request tree, */
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/* if policy == IPSEC else this value == NULL.*/
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};
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/* Request for IPsec */
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struct ipsecrequest {
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struct ipsecrequest *next;
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/* pointer to next structure */
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/* If NULL, it means the end of chain. */
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struct secasindex saidx;
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u_int level; /* IPsec level defined below. */
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struct secasvar *sav; /* place holder of SA for use */
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struct secpolicy *sp; /* back pointer to SP */
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};
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/* security policy in PCB */
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struct inpcbpolicy {
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struct secpolicy *sp_in;
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struct secpolicy *sp_out;
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int priv; /* privileged socket ? */
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};
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#endif /*_KERNEL*/
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#define IPSEC_PORT_ANY 65535
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#define IPSEC_ULPROTO_ANY 255
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#define IPSEC_PROTO_ANY 65535
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/* mode of security protocol */
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/* NOTE: DON'T use IPSEC_MODE_ANY at SPD. It's only use in SAD */
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#define IPSEC_MODE_ANY 0 /* i.e. wildcard. */
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#define IPSEC_MODE_TRANSPORT 1
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#define IPSEC_MODE_TUNNEL 2
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/*
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* Direction of security policy.
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* NOTE: Since INVALID is used just as flag.
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* The other are used for loop counter too.
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*/
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#define IPSEC_DIR_ANY 0
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#define IPSEC_DIR_INBOUND 1
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#define IPSEC_DIR_OUTBOUND 2
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#define IPSEC_DIR_MAX 3
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#define IPSEC_DIR_INVALID 4
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/* Policy level */
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/*
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* IPSEC, ENTRUST and BYPASS are allowd for setsockopt() in PCB,
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* DISCARD, IPSEC and NONE are allowd for setkey() in SPD.
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* DISCARD and NONE are allowd for system default.
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*/
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#define IPSEC_POLICY_DISCARD 0 /* discarding packet */
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#define IPSEC_POLICY_NONE 1 /* through IPsec engine */
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#define IPSEC_POLICY_IPSEC 2 /* do IPsec */
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#define IPSEC_POLICY_ENTRUST 3 /* consulting SPD if present. */
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#define IPSEC_POLICY_BYPASS 4 /* only for privileged socket. */
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/* Security protocol level */
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#define IPSEC_LEVEL_DEFAULT 0 /* reference to system default */
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#define IPSEC_LEVEL_USE 1 /* use SA if present. */
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#define IPSEC_LEVEL_REQUIRE 2 /* require SA. */
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#define IPSEC_LEVEL_UNIQUE 3 /* unique SA. */
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#define IPSEC_REPLAYWSIZE 32
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/* statistics for ipsec processing */
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struct ipsecstat {
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u_long in_success; /* succeeded inbound process */
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u_long in_polvio; /* security policy violation for inbound process */
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u_long in_nosa; /* inbound SA is unavailable */
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u_long in_inval; /* inbound processing failed due to EINVAL */
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u_long in_badspi; /* failed getting a SPI */
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u_long in_ahreplay; /* AH replay check failed */
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u_long in_espreplay; /* ESP replay check failed */
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u_long in_ahauthsucc; /* AH authentication success */
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u_long in_ahauthfail; /* AH authentication failure */
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u_long in_espauthsucc; /* ESP authentication success */
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u_long in_espauthfail; /* ESP authentication failure */
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u_long in_esphist[SADB_EALG_MAX];
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u_long in_ahhist[SADB_AALG_MAX];
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u_long out_success; /* succeeded outbound process */
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u_long out_polvio; /* security policy violation for outbound process */
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u_long out_nosa; /* outbound SA is unavailable */
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u_long out_inval; /* outbound process failed due to EINVAL */
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u_long out_noroute; /* there is no route */
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u_long out_esphist[SADB_EALG_MAX];
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u_long out_ahhist[SADB_AALG_MAX];
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};
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/*
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* Definitions for IPsec & Key sysctl operations.
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*/
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/*
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* Names for IPsec & Key sysctl objects
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*/
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#define IPSECCTL_STATS 1 /* stats */
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#define IPSECCTL_DEF_POLICY 2
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#define IPSECCTL_DEF_ESP_TRANSLEV 3 /* int; ESP transport mode */
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#define IPSECCTL_DEF_ESP_NETLEV 4 /* int; ESP tunnel mode */
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#define IPSECCTL_DEF_AH_TRANSLEV 5 /* int; AH transport mode */
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#define IPSECCTL_DEF_AH_NETLEV 6 /* int; AH tunnel mode */
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#define IPSECCTL_INBOUND_CALL_IKE 7
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#define IPSECCTL_AH_CLEARTOS 8
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#define IPSECCTL_AH_OFFSETMASK 9
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#define IPSECCTL_DFBIT 10
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#define IPSECCTL_ECN 11
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#define IPSECCTL_MAXID 12
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#define IPSECCTL_NAMES { \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ "def_policy", CTLTYPE_INT }, \
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{ "esp_trans_deflev", CTLTYPE_INT }, \
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{ "esp_net_deflev", CTLTYPE_INT }, \
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{ "ah_trans_deflev", CTLTYPE_INT }, \
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{ "ah_net_deflev", CTLTYPE_INT }, \
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{ "inbound_call_ike", CTLTYPE_INT }, \
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{ "ah_cleartos", CTLTYPE_INT }, \
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{ "ah_offsetmask", CTLTYPE_INT }, \
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{ "dfbit", CTLTYPE_INT }, \
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{ "ecn", CTLTYPE_INT }, \
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}
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#define IPSEC6CTL_NAMES { \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ "def_policy", CTLTYPE_INT }, \
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{ "esp_trans_deflev", CTLTYPE_INT }, \
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{ "esp_net_deflev", CTLTYPE_INT }, \
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{ "ah_trans_deflev", CTLTYPE_INT }, \
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{ "ah_net_deflev", CTLTYPE_INT }, \
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{ "inbound_call_ike", CTLTYPE_INT }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ "ecn", CTLTYPE_INT }, \
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}
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#define IPSECCTL_VARS { \
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0, \
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0, \
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&ip4_def_policy.policy, \
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&ip4_esp_trans_deflev, \
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&ip4_esp_net_deflev, \
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&ip4_ah_trans_deflev, \
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&ip4_ah_net_deflev, \
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&ip4_inbound_call_ike, \
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&ip4_ah_cleartos, \
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&ip4_ah_offsetmask, \
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&ip4_ipsec_dfbit, \
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&ip4_ipsec_ecn, \
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}
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#define IPSEC6CTL_VARS { \
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0, \
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0, \
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&ip6_def_policy.policy, \
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&ip6_esp_trans_deflev, \
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&ip6_esp_net_deflev, \
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&ip6_ah_trans_deflev, \
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&ip6_ah_net_deflev, \
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&ip6_inbound_call_ike, \
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0, \
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0, \
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0, \
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&ip6_ipsec_ecn, \
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}
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#ifdef _KERNEL
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#ifdef SYSCTL_DECL
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SYSCTL_DECL(_net_inet_ipsec);
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#endif
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struct ipsec_output_state {
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struct mbuf *m;
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struct route *ro;
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struct sockaddr *dst;
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};
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extern struct ipsecstat ipsecstat;
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extern struct secpolicy ip4_def_policy;
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extern int ip4_esp_trans_deflev;
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extern int ip4_esp_net_deflev;
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extern int ip4_ah_trans_deflev;
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extern int ip4_ah_net_deflev;
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extern int ip4_inbound_call_ike;
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extern int ip4_ah_cleartos;
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extern int ip4_ah_offsetmask;
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extern int ip4_ipsec_dfbit;
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extern int ip4_ipsec_ecn;
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extern struct secpolicy *ipsec4_getpolicybysock
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__P((struct mbuf *, u_int, struct socket *, int *));
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extern struct secpolicy *ipsec4_getpolicybyaddr
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__P((struct mbuf *, u_int, int, int *));
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struct inpcb;
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extern int ipsec_init_policy __P((struct socket *so, struct inpcbpolicy **));
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extern int ipsec_copy_policy
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__P((struct inpcbpolicy *, struct inpcbpolicy *));
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extern u_int ipsec_get_reqlevel __P((struct ipsecrequest *));
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extern int ipsec4_set_policy __P((struct inpcb *inp, int optname,
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caddr_t request, int priv));
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extern int ipsec4_get_policy
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__P((struct inpcb *inpcb, caddr_t request, struct mbuf **mp));
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extern int ipsec4_delete_pcbpolicy __P((struct inpcb *));
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extern int ipsec4_in_reject_so __P((struct mbuf *, struct socket *));
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extern int ipsec4_in_reject __P((struct mbuf *, struct inpcb *));
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struct secas;
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struct tcpcb;
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struct tcp6cb;
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extern int ipsec_chkreplay __P((u_int32_t, struct secasvar *));
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extern int ipsec_updatereplay __P((u_int32_t, struct secasvar *));
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extern size_t ipsec4_hdrsiz __P((struct mbuf *, u_int, struct inpcb *));
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extern size_t ipsec_hdrsiz_tcp __P((struct tcpcb *));
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struct ip;
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extern const char *ipsec4_logpacketstr __P((struct ip *, u_int32_t));
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extern const char *ipsec_logsastr __P((struct secasvar *));
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extern void ipsec_dumpmbuf __P((struct mbuf *));
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extern int ipsec4_output __P((struct ipsec_output_state *, struct secpolicy *,
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int));
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extern int ipsec4_tunnel_validate __P((struct ip *, u_int,
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struct secasvar *));
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extern struct mbuf *ipsec_copypkt __P((struct mbuf *));
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#endif /*_KERNEL*/
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#ifndef _KERNEL
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extern caddr_t ipsec_set_policy __P((char *policy, int buflen));
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extern int ipsec_get_policylen __P((caddr_t buf));
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extern char *ipsec_dump_policy __P((caddr_t buf, char *delimiter));
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extern char *ipsec_strerror __P((void));
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#endif /*!_KERNEL*/
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#endif /*_NETINET6_IPSEC_H_*/
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