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/*
* Copyright (c) 2020 Darren Tucker <dtucker@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
struct xaddr;
struct per_source_penalty;
void srclimit_init(int, int, int, int,
struct per_source_penalty *, const char *);
int srclimit_check_allow(int, int);
void srclimit_done(int);
#define SRCLIMIT_PENALTY_NONE 0
#define SRCLIMIT_PENALTY_CRASH 1
#define SRCLIMIT_PENALTY_AUTHFAIL 2
#define SRCLIMIT_PENALTY_GRACE_EXCEEDED 3
#define SRCLIMIT_PENALTY_NOAUTH 4
#define SRCLIMIT_PENALTY_REFUSECONNECTION 5
/* meaningful exit values, used by sshd listener for penalties */
#define EXIT_LOGIN_GRACE 3 /* login grace period exceeded */
#define EXIT_CHILD_CRASH 4 /* preauth child crashed */
#define EXIT_AUTH_ATTEMPTED 5 /* at least one auth attempt made */
#define EXIT_CONFIG_REFUSED 6 /* sshd_config RefuseConnection */
void srclimit_penalise(struct xaddr *, int);
int srclimit_penalty_check_allow(int, const char **);
void srclimit_penalty_info(void);
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