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 * %sccs.include.redist.c% 9 * 10 * @(#)finger.h 5.5 (Berkeley) 06/01/90 11 */ 12 13 #include <pwd.h> 14 #include <utmp.h> 15 16 /* 17 * All unique persons are linked in a list headed by "head" and linkd 18 * by the "next" field, as well as kept in a hash table. 19 */ 20 21 typedef struct person { 22 struct person *next; /* link to next person */ 23 struct person *hlink; /* link to next person in hash bucket */ 24 uid_t uid; /* user id */ 25 char *dir; /* user's home directory */ 26 char *homephone; /* pointer to home phone no. */ 27 char *name; /* login name */ 28 char *office; /* pointer to office name */ 29 char *officephone; /* pointer to office phone no. */ 30 char *realname; /* pointer to full name */ 31 char *shell; /* user's shell */ 32 struct where *whead, *wtail; /* list of where he is or has been */ 33 } PERSON; 34 35 enum status { LASTLOG, LOGGEDIN }; 36 37 typedef struct where { 38 struct where *next; /* next place he is or has been */ 39 enum status info; /* type/status of request */ 40 short writable; /* tty is writable */ 41 time_t loginat; /* time of (last) login */ 42 time_t idletime; /* how long idle (if logged in) */ 43 char tty[UT_LINESIZE+1]; /* null terminated tty line */ 44 char host[UT_HOSTSIZE+1]; /* null terminated remote host name */ 45 } WHERE; 46 47 #define HBITS 8 /* number of bits in hash code */ 48 #define HSIZE (1 << 8) /* hash table size */ 49 #define HMASK (HSIZE - 1) /* hash code mask */ 50 51 PERSON *htab[HSIZE]; /* the buckets */ 52 PERSON *phead, *ptail; /* the linked list of all people */ 53 54 int entries; /* number of people */ 55 56 PERSON *enter_person(), *find_person(), *palloc(); 57 WHERE *walloc(); 58 59 extern char tbuf[1024]; /* temp buffer for anybody */ 60