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/* IPsec DOI and Oakley resolution routines
* Copyright (C) 1998-2002 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.
*/
extern void echo_hdr(struct msg_digest *md, bool enc, u_int8_t np);
extern void ipsecdoi_initiate(int whack_sock, struct connection *c
, lset_t policy, unsigned long try, so_serial_t replacing);
extern void ipsecdoi_replace(struct state *st, unsigned long try);
extern void init_phase2_iv(struct state *st, const msgid_t *msgid);
extern stf_status quick_outI1(int whack_sock
, struct state *isakmp_sa
, struct connection *c
, lset_t policy
, unsigned long try
, so_serial_t replacing);
extern state_transition_fn
main_inI1_outR1,
main_inR1_outI2,
main_inI2_outR2,
main_inR2_outI3,
main_inI3_outR3,
main_inR3,
quick_inI1_outR1,
quick_inR1_outI2,
quick_inI2;
extern void send_delete(struct state *st);
extern void accept_delete(struct state *st, struct msg_digest *md
, struct payload_digest *p);
extern void close_message(pb_stream *pbs);
extern bool encrypt_message(pb_stream *pbs, struct state *st);
extern void send_notification_from_state(struct state *st,
enum state_kind state, u_int16_t type);
extern void send_notification_from_md(struct msg_digest *md, u_int16_t type);
extern const char *init_pluto_vendorid(void);
extern void dpd_outI(struct state *st);
extern stf_status dpd_inI_outR(struct state *st
, struct isakmp_notification *const n, pb_stream *n_pbs);
extern stf_status dpd_inR(struct state *st
, struct isakmp_notification *const n, pb_stream *n_pbs);
extern void dpd_timeout(struct state *st);
/* START_HASH_PAYLOAD
*
* Emit a to-be-filled-in hash payload, noting the field start (r_hashval)
* and the start of the part of the message to be hashed (r_hash_start).
* This macro is magic.
* - it can cause the caller to return
* - it references variables local to the caller (r_hashval, r_hash_start, st)
*/
#define START_HASH_PAYLOAD(rbody, np) { \
pb_stream hash_pbs; \
if (!out_generic(np, &isakmp_hash_desc, &(rbody), &hash_pbs)) \
return STF_INTERNAL_ERROR; \
r_hashval = hash_pbs.cur; /* remember where to plant value */ \
if (!out_zero(st->st_oakley.hasher->hash_digest_size, &hash_pbs, "HASH")) \
return STF_INTERNAL_ERROR; \
close_output_pbs(&hash_pbs); \
r_hash_start = (rbody).cur; /* hash from after HASH payload */ \
}
/* CHECK_QUICK_HASH
*
* This macro is magic -- it cannot be expressed as a function.
* - it causes the caller to return!
* - it declares local variables and expects the "do_hash" argument
* expression to reference them (hash_val, hash_pbs)
*/
#define CHECK_QUICK_HASH(md, do_hash, hash_name, msg_name) { \
pb_stream *const hash_pbs = &md->chain[ISAKMP_NEXT_HASH]->pbs; \
u_char hash_val[MAX_DIGEST_LEN]; \
size_t hash_len = do_hash; \
if (pbs_left(hash_pbs) != hash_len \
|| memcmp(hash_pbs->cur, hash_val, hash_len) != 0) \
{ \
DBG_cond_dump(DBG_CRYPT, "received " hash_name ":", hash_pbs->cur, pbs_left(hash_pbs)); \
loglog(RC_LOG_SERIOUS, "received " hash_name " does not match computed value in " msg_name); \
/* XXX Could send notification back */ \
return STF_FAIL + INVALID_HASH_INFORMATION; \
} \
}
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