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 are permitted 9 * provided that the above copyright notice and this paragraph are 10 * duplicated in all such forms and that any documentation, 11 * advertising materials, and other materials related to such 12 * distribution and use acknowledge that the software was developed 13 * by the University of California, Berkeley. The name of the 14 * University may not be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 19 * 20 * @(#)finger.h 5.4 (Berkeley) 02/07/90 21 */ 22 23 #include <pwd.h> 24 #include <utmp.h> 25 26 /* 27 * All unique persons are linked in a list headed by "head" and linkd 28 * by the "next" field, as well as kept in a hash table. 29 */ 30 31 typedef struct person { 32 struct person *next; /* link to next person */ 33 struct person *hlink; /* link to next person in hash bucket */ 34 uid_t uid; /* user id */ 35 char *dir; /* user's home directory */ 36 char *homephone; /* pointer to home phone no. */ 37 char *name; /* login name */ 38 char *office; /* pointer to office name */ 39 char *officephone; /* pointer to office phone no. */ 40 char *realname; /* pointer to full name */ 41 char *shell; /* user's shell */ 42 struct where *whead, *wtail; /* list of where he is or has been */ 43 } PERSON; 44 45 enum status { LASTLOG, LOGGEDIN }; 46 47 typedef struct where { 48 struct where *next; /* next place he is or has been */ 49 enum status info; /* type/status of request */ 50 short writable; /* tty is writable */ 51 time_t loginat; /* time of (last) login */ 52 time_t idletime; /* how long idle (if logged in) */ 53 char tty[UT_LINESIZE+1]; /* null terminated tty line */ 54 char host[UT_HOSTSIZE+1]; /* null terminated remote host name */ 55 } WHERE; 56 57 #define HBITS 8 /* number of bits in hash code */ 58 #define HSIZE (1 << 8) /* hash table size */ 59 #define HMASK (HSIZE - 1) /* hash code mask */ 60 61 PERSON *htab[HSIZE]; /* the buckets */ 62 PERSON *phead, *ptail; /* the linked list of all people */ 63 64 int entries; /* number of people */ 65 66 PERSON *enter_person(), *find_person(), *palloc(); 67 WHERE *walloc(); 68 69 extern char tbuf[1024]; /* temp buffer for anybody */ 70