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Wall, commons, little knf

/* *	$OpenBSD: finger.h,v 1.6 2004/03/15 02:50:29 tedu Exp $*/
/*
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Tony Nardo of the Johns Hopkins University/Applied Physics Lab.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	from: @(#)finger.h	5.5 (Berkeley) 6/1/90
 */

#include <pwd.h>
#include <utmp.h>

#define _PATH_MAILSPOOL "/var/mail"

/*
 * All unique persons are linked in a list headed by "head" and linkd
 * by the "next" field, as well as kept in a hash table.
 */

typedef struct person {
	struct person *next;		/* link to next person */
	struct person *hlink;		/* link to next person in hash bucket */
	uid_t uid;			/* user id */
	char *dir;			/* user's home directory */
	char *homephone;		/* pointer to home phone no. */
	char *name;			/* login name */
	char *office;			/* pointer to office name */
	char *officephone;		/* pointer to office phone no. */
	char *realname;			/* pointer to full name */
	char *shell;			/* user's shell */
	time_t mailread;		/* last time mail was read */
	time_t mailrecv;		/* last time mail was read */
	struct where *whead, *wtail;	/* list of where he is or has been */
} PERSON;

enum status { LASTLOG, LOGGEDIN };

typedef struct where {
	struct where *next;		/* next place he is or has been */
	enum status info;		/* type/status of request */
	short writable;			/* tty is writable */
	time_t loginat;			/* time of (last) login */
	time_t idletime;		/* how long idle (if logged in) */
	char tty[UT_LINESIZE+1];	/* null terminated tty line */
	char host[UT_HOSTSIZE+1];	/* null terminated remote host name */
} WHERE;

#define	HBITS	8			/* number of bits in hash code */
#define	HSIZE	(1 << 8)		/* hash table size */
#define	HMASK	(HSIZE - 1)		/* hash code mask */

extern PERSON *htab[HSIZE];		/* the buckets */
extern PERSON *phead, *ptail;		/* the linked list of all people */