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/* Security Policy Data Base (such as it is)
* Copyright (C) 1998, 1999 D. Hugh Redelmeier.
*
* 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 _SPDB_H
#define _SPDB_H
#include "packet.h"
/* database of SA properties */
/* Attribute type and value pair.
* Note: only "basic" values are represented so far.
*/
struct db_attr {
u_int16_t type; /* ISAKMP_ATTR_AF_TV is implied; 0 for end */
u_int16_t val;
};
/* transform */
struct db_trans {
u_int8_t transid; /* Transform-Id */
struct db_attr *attrs; /* array */
int attr_cnt; /* number of elements */
};
/* proposal */
struct db_prop {
u_int8_t protoid; /* Protocol-Id */
struct db_trans *trans; /* array (disjunction) */
int trans_cnt; /* number of elements */
/* SPI size and value isn't part of DB */
};
/* conjunction of proposals */
struct db_prop_conj {
struct db_prop *props; /* array */
int prop_cnt; /* number of elements */
};
/* security association */
struct db_sa {
struct db_prop_conj *prop_conjs; /* array */
int prop_conj_cnt; /* number of elements */
/* Hardwired for now;
* DOI: ISAKMP_DOI_IPSEC
* Situation: SIT_IDENTITY_ONLY
*/
};
/* The oakley sadb */
extern struct db_sa oakley_sadb;
/* The ipsec sadb is subscripted by a bitset with members
* from POLICY_ENCRYPT, POLICY_AUTHENTICATE, POLICY_COMPRESS
*/
extern struct db_sa ipsec_sadb[1 << 3];
/* forward declaration */
struct state;
extern bool out_sa(
pb_stream *outs,
struct db_sa *sadb,
struct state *st,
bool oakley_mode,
u_int8_t np);
extern notification_t preparse_isakmp_sa_body(
const struct isakmp_sa *sa, /* header of input SA Payload */
pb_stream *sa_pbs, /* body of input SA Payload */
u_int32_t *ipsecdoisit, /* IPsec DOI SIT bitset */
pb_stream *proposal_pbs, /* body of proposal Payload */
struct isakmp_proposal *proposal);
extern notification_t parse_isakmp_policy(
pb_stream *proposal_pbs, /* body of proposal Payload */
u_int notrans, /* number of transforms */
lset_t *policy); /* RSA, PSK or XAUTH policy */
extern notification_t parse_isakmp_sa_body(
u_int32_t ipsecdoisit, /* IPsec DOI SIT bitset */
pb_stream *proposal_pbs, /* body of proposal Payload */
struct isakmp_proposal *proposal,
pb_stream *r_sa_pbs, /* if non-NULL, where to emit winning SA */
struct state *st, /* current state object */
bool initiator); /* is caller initiator? */
extern notification_t parse_ipsec_sa_body(
pb_stream *sa_pbs, /* body of input SA Payload */
const struct isakmp_sa *sa, /* header of input SA Payload */
pb_stream *r_sa_pbs, /* if non-NULL, where to emit winning SA */
bool selection, /* if this SA is a selection, only one tranform can appear */
struct state *st); /* current state object */
extern void backup_pbs(pb_stream *pbs);
extern void restore_pbs(pb_stream *pbs);
#endif /* _SPDB_H */
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