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/*
* FreeS/WAN specific PF_KEY headers
* Copyright (C) 1999, 2000, 2001 Richard Guy Briggs.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#ifndef __NET_IPSEC_PF_KEY_H
#define __NET_IPSEC_PF_KEY_H
extern void (*pfkey_debug_func)(const char *message, ...);
extern uint8_t satype2proto(uint8_t satype);
extern uint8_t proto2satype(uint8_t proto);
extern char* satype2name(uint8_t satype);
extern char* proto2name(uint8_t proto);
struct key_opt
{
uint32_t key_pid; /* process ID */
struct sock *sk;
};
#define key_pid(sk) ((struct key_opt*)&((sk)->protinfo))->key_pid
#define IPSEC_PFKEYv2_ALIGN (sizeof(uint64_t)/sizeof(uint8_t))
#define BITS_PER_OCTET 8
#define OCTETBITS 8
#define PFKEYBITS 64
#define DIVUP(x,y) ((x + y -1) / y) /* divide, rounding upwards */
#define ALIGN_N(x,y) (DIVUP(x,y) * y) /* align on y boundary */
#define PFKEYv2_MAX_MSGSIZE 4096
/*
* PF_KEYv2 permitted and required extensions in and out bitmaps
*/
struct pf_key_ext_parsers_def {
int (*parser)(struct sadb_ext*);
char *parser_name;
};
extern unsigned int extensions_bitmaps[2/*in/out*/][2/*perm/req*/][SADB_MAX + 1/*ext*/];
#define EXT_BITS_IN 0
#define EXT_BITS_OUT 1
#define EXT_BITS_PERM 0
#define EXT_BITS_REQ 1
extern void pfkey_extensions_init(struct sadb_ext *extensions[SADB_EXT_MAX + 1]);
extern void pfkey_extensions_free(struct sadb_ext *extensions[SADB_EXT_MAX + 1]);
extern void pfkey_msg_free(struct sadb_msg **pfkey_msg);
extern int pfkey_msg_parse(struct sadb_msg *pfkey_msg,
struct pf_key_ext_parsers_def *ext_parsers[],
struct sadb_ext **extensions,
int dir);
/*
* PF_KEYv2 build function prototypes
*/
int
pfkey_msg_hdr_build(struct sadb_ext** pfkey_ext,
uint8_t msg_type,
uint8_t satype,
uint8_t msg_errno,
uint32_t seq,
uint32_t pid);
int
pfkey_sa_ref_build(struct sadb_ext ** pfkey_ext,
uint16_t exttype,
uint32_t spi, /* in network order */
uint8_t replay_window,
uint8_t sa_state,
uint8_t auth,
uint8_t encrypt,
uint32_t flags,
uint32_t/*IPsecSAref_t*/ ref);
int
pfkey_sa_build(struct sadb_ext ** pfkey_ext,
uint16_t exttype,
uint32_t spi, /* in network order */
uint8_t replay_window,
uint8_t sa_state,
uint8_t auth,
uint8_t encrypt,
uint32_t flags);
int
pfkey_lifetime_build(struct sadb_ext ** pfkey_ext,
uint16_t exttype,
uint32_t allocations,
uint64_t bytes,
uint64_t addtime,
uint64_t usetime,
uint32_t packets);
int
pfkey_address_build(struct sadb_ext** pfkey_ext,
uint16_t exttype,
uint8_t proto,
uint8_t prefixlen,
struct sockaddr* address);
int
pfkey_key_build(struct sadb_ext** pfkey_ext,
uint16_t exttype,
uint16_t key_bits,
char* key);
int
pfkey_ident_build(struct sadb_ext** pfkey_ext,
uint16_t exttype,
uint16_t ident_type,
uint64_t ident_id,
uint8_t ident_len,
char* ident_string);
int
pfkey_x_nat_t_type_build(struct sadb_ext** pfkey_ext,
uint8_t type);
int
pfkey_x_nat_t_port_build(struct sadb_ext** pfkey_ext,
uint16_t exttype,
uint16_t port);
int
pfkey_sens_build(struct sadb_ext** pfkey_ext,
uint32_t dpd,
uint8_t sens_level,
uint8_t sens_len,
uint64_t* sens_bitmap,
uint8_t integ_level,
uint8_t integ_len,
uint64_t* integ_bitmap);
int
pfkey_x_protocol_build(struct sadb_ext **, uint8_t);
int
pfkey_prop_build(struct sadb_ext** pfkey_ext,
uint8_t replay,
unsigned int comb_num,
struct sadb_comb* comb);
int
pfkey_supported_build(struct sadb_ext** pfkey_ext,
uint16_t exttype,
unsigned int alg_num,
struct sadb_alg* alg);
int
pfkey_spirange_build(struct sadb_ext** pfkey_ext,
uint16_t exttype,
uint32_t min,
uint32_t max);
int
pfkey_x_kmprivate_build(struct sadb_ext** pfkey_ext);
int
pfkey_x_satype_build(struct sadb_ext** pfkey_ext,
uint8_t satype);
int
pfkey_x_debug_build(struct sadb_ext** pfkey_ext,
uint32_t tunnel,
uint32_t netlink,
uint32_t xform,
uint32_t eroute,
uint32_t spi,
uint32_t radij,
uint32_t esp,
uint32_t ah,
uint32_t rcv,
uint32_t pfkey,
uint32_t ipcomp,
uint32_t verbose);
int
pfkey_msg_build(struct sadb_msg** pfkey_msg,
struct sadb_ext* extensions[],
int dir);
/* in pfkey_v2_debug.c - routines to decode numbers -> strings */
const char *
pfkey_v2_sadb_ext_string(int extnum);
const char *
pfkey_v2_sadb_type_string(int sadb_type);
#endif /* __NET_IPSEC_PF_KEY_H */
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