664a31e496
is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
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 *, int));
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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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