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finger.h revision 1.1 
      1 /*
      2  * Copyright (c) 1989 The Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * This code is derived from software contributed to Berkeley by
      6  * Tony Nardo of the Johns Hopkins University/Applied Physics Lab.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by the University of
     19  *	California, Berkeley and its contributors.
     20  * 4. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  *
     36  *	@(#)finger.h	5.5 (Berkeley) 6/1/90
     37  */
     38 
     39 #include <pwd.h>
     40 #include <utmp.h>
     41 
     42 /*
     43  * All unique persons are linked in a list headed by "head" and linkd
     44  * by the "next" field, as well as kept in a hash table.
     45  */
     46 
     47 typedef struct person {
     48 	struct person *next;		/* link to next person */
     49 	struct person *hlink;		/* link to next person in hash bucket */
     50 	uid_t uid;			/* user id */
     51 	char *dir;			/* user's home directory */
     52 	char *homephone;		/* pointer to home phone no. */
     53 	char *name;			/* login name */
     54 	char *office;			/* pointer to office name */
     55 	char *officephone;		/* pointer to office phone no. */
     56 	char *realname;			/* pointer to full name */
     57 	char *shell;			/* user's shell */
     58 	struct where *whead, *wtail;	/* list of where he is or has been */
     59 } PERSON;
     60 
     61 enum status { LASTLOG, LOGGEDIN };
     62 
     63 typedef struct where {
     64 	struct where *next;		/* next place he is or has been */
     65 	enum status info;		/* type/status of request */
     66 	short writable;			/* tty is writable */
     67 	time_t loginat;			/* time of (last) login */
     68 	time_t idletime;		/* how long idle (if logged in) */
     69 	char tty[UT_LINESIZE+1];	/* null terminated tty line */
     70 	char host[UT_HOSTSIZE+1];	/* null terminated remote host name */
     71 } WHERE;
     72 
     73 #define	HBITS	8			/* number of bits in hash code */
     74 #define	HSIZE	(1 << 8)		/* hash table size */
     75 #define	HMASK	(HSIZE - 1)		/* hash code mask */
     76 
     77 PERSON *htab[HSIZE];			/* the buckets */
     78 PERSON *phead, *ptail;			/* the linked list of all people */
     79 
     80 int entries;				/* number of people */
     81 
     82 PERSON *enter_person(), *find_person(), *palloc();
     83 WHERE *walloc();
     84 
     85 extern char tbuf[1024];			/* temp buffer for anybody */
     86