/*
 *  ircd-ratbox: an advanced Internet Relay Chat Daemon(ircd).
 *  hostmask.h: A header for the hostmask code.
 *
 *  Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
 *  Copyright (C) 1996-2002 Hybrid Development Team
 *  Copyright (C) 2002-2012 ircd-ratbox development team
 *
 *  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.
 *
 *  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.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
 *  USA
 *
 *  $Id: hostmask.h 27371 2012-03-16 05:33:15Z dubkat $
 */

#ifndef INCLUDE_hostmask_h
#define INCLUDE_hostmask_h 1
enum
{
	HM_HOST,
	HM_IPV4
#ifdef RB_IPV6
		, HM_IPV6
#endif
};

int parse_netmask(const char *, struct sockaddr *, int *);
struct ConfItem *find_conf_by_address(const char *host, const char *sockhost,
				      struct sockaddr *, int, int, const char *);
struct ConfItem *find_auth(const char *host, const char *sockhost,
			   struct sockaddr *, int, const char *);
void add_conf_by_address(const char *, int, const char *, struct ConfItem *);
void delete_one_address_conf(const char *, struct ConfItem *);
void clear_out_address_conf(void);
void clear_out_address_conf_bans(void);
void init_host_hash(void);
const char *show_iline_prefix(struct Client *, struct ConfItem *, const char *);

struct ConfItem *find_address_conf(const char *host, const char *sockhost,
				   const char *, struct sockaddr *, int);

#define find_kline(x)	(find_conf_by_address((x)->host, (x)->sockhost,\
			 (struct sockaddr *)&(x)->localClient->ip, CONF_KILL,\
			 GET_SS_FAMILY(&(x)->localClient->ip), (x)->username))
#define find_gline(x)	(find_conf_by_address((x)->host, (x)->sockhost,\
			 (struct sockaddr *)&(x)->localClient->ip, CONF_GLINE,\
			 GET_SS_FAMILY(&(x)->localClient->ip), (x)->username))

#ifdef RB_IPV6
int match_ipv6(struct sockaddr *, struct sockaddr *, int);
#endif
int match_ipv4(struct sockaddr *, struct sockaddr *, int);

/* Hashtable stuff... */
#define ATABLE_BITS 12
#define ATABLE_SIZE (1<<ATABLE_BITS)

extern struct AddressRec *atable[ATABLE_SIZE];

#define HOSTHASH_WALK(i, arec) for (i = 0; i < ATABLE_SIZE; i++) { for(arec = atable[i]; arec; arec = arec->next)
#define HOSTHASH_WALK_SAFE(i, arec, arecn) \
	for(i = 0; i < ATABLE_SIZE; i++) { \
		for(arec = atable[i], arecn = arec ? arec->next : NULL; arec; \
			arec = arecn, arecn = arecn ? arecn->next : NULL)
#define HOSTHASH_WALK_END }

struct AddressRec
{
	/* masktype: HM_HOST, HM_IPV4, HM_IPV6 -A1kmm */
	int masktype;

	union
	{
		struct
		{
			/* Pointer into ConfItem... -A1kmm */
			struct rb_sockaddr_storage addr;
			int bits;
		}
		ipa;

		/* Pointer into ConfItem... -A1kmm */
		const char *hostname;
	}
	Mask;

	/* type: CONF_CLIENT, CONF_DLINE, CONF_KILL etc... -A1kmm */
	int type;

	/* Higher precedences overrule lower ones... */
	uint32_t precedence;

	/* Only checked if !(type & 1)... */
	const char *username;
	struct ConfItem *aconf;

	/* The next record in this hash bucket. */
	struct AddressRec *next;
};


#endif /* INCLUDE_hostmask_h */