usr/src/usr.bin/finger/finger.h

/*
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *      @(#)finger.h    5.3 (Berkeley) %G%
 */

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

/*
 * 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 */
        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 */

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

int entries;                            /* number of people */

PERSON *enter_person(), *find_person(), *palloc();
WHERE *walloc();

extern char tbuf[1024];                 /* temp buffer for anybody */