/*	$OpenBSD: snmpd.h,v 1.1.1.1 2022/09/01 14:20:33 martijn Exp $	*/

/*
 * Copyright (c) 2007, 2008, 2012 Reyk Floeter <reyk@openbsd.org>
 * Copyright (c) 2003, 2004 Henning Brauer <henning@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.
 */

#ifndef SNMPD_H
#define SNMPD_H

#include <sys/tree.h>

#include <net/if.h>
#include <net/if_dl.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <netinet/ip.h>
#include <arpa/inet.h>
#include <net/pfvar.h>
#include <net/route.h>

#include <ber.h>
#include <stdio.h>
#include <imsg.h>

#include "log.h"

#ifndef nitems
#define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
#endif

/*
 * common definitions for snmpd
 */

#define CONF_FILE		"/etc/snmpd.conf"
#define SNMPD_SOCKET		"/var/run/snmpd.sock"
#define SNMPD_USER		"_snmpd"
#define SNMP_PORT		"161"
#define SNMPTRAP_PORT		"162"

#define SNMPD_MAXSTRLEN		484
#define SNMPD_MAXCOMMUNITYLEN	SNMPD_MAXSTRLEN
#define SNMPD_MAXVARBIND	0x7fffffff
#define SNMPD_MAXVARBINDLEN	1210
#define SNMPD_MAXENGINEIDLEN	32
#define SNMPD_MAXUSERNAMELEN	32
#define SNMPD_MAXCONTEXNAMELEN	32

#define SNMP_USM_MAXDIGESTLEN	48
#define SNMP_USM_SALTLEN	8
#define SNMP_USM_KEYLEN		64
#define SNMP_CIPHER_KEYLEN	16

#define SMALL_READ_BUF_SIZE	1024
#define READ_BUF_SIZE		65535
#define	RT_BUF_SIZE		16384
#define	MAX_RTSOCK_BUF		(2 * 1024 * 1024)

#define SNMP_ENGINEID_OLD	0x00
#define SNMP_ENGINEID_NEW	0x80	/* RFC3411 */

#define SNMP_ENGINEID_FMT_IPv4	1
#define SNMP_ENGINEID_FMT_IPv6	2
#define SNMP_ENGINEID_FMT_MAC	3
#define SNMP_ENGINEID_FMT_TEXT	4
#define SNMP_ENGINEID_FMT_OCT	5
#define SNMP_ENGINEID_FMT_HH	129

#define PEN_OPENBSD		30155

#if DEBUG
#define DPRINTF		log_debug
#else
#define DPRINTF(x...)	do {} while(0)
#endif

/*
 * daemon structures
 */

struct snmpd {
	int			 sc_ncpu;
	int64_t			*sc_cpustates;
	int			 sc_rtfilter;
};

extern struct snmpd *snmpd_env;

/* mib.c */
u_long   smi_getticks(void);


/* timer.c */
void		 timer_init(void);

/* util.c */
ssize_t	 sendtofrom(int, void *, size_t, int, struct sockaddr *,
	    socklen_t, struct sockaddr *, socklen_t);
ssize_t	 recvfromto(int, void *, size_t, int, struct sockaddr *,
	    socklen_t *, struct sockaddr *, socklen_t *);
const char *log_in6addr(const struct in6_addr *);
const char *print_host(struct sockaddr_storage *, char *, size_t);
char	*tohexstr(u_int8_t *, int);
uint8_t *fromhexstr(uint8_t *, const char *, size_t);

#endif /* SNMPD_H */