1 /* 2 * Copyright (c) 1989 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 * 17 * @(#)finger.h 5.3 (Berkeley) 05/08/89 18 */ 19 20 #include <pwd.h> 21 #include <utmp.h> 22 23 /* 24 * All unique persons are linked in a list headed by "head" and linkd 25 * by the "next" field, as well as kept in a hash table. 26 */ 27 28 typedef struct person { 29 struct person *next; /* link to next person */ 30 struct person *hlink; /* link to next person in hash bucket */ 31 uid_t uid; /* user id */ 32 char *dir; /* user's home directory */ 33 char *homephone; /* pointer to home phone no. */ 34 char *name; /* login name */ 35 char *office; /* pointer to office name */ 36 char *officephone; /* pointer to office phone no. */ 37 char *realname; /* pointer to full name */ 38 char *shell; /* user's shell */ 39 struct where *whead, *wtail; /* list of where he is or has been */ 40 } PERSON; 41 42 enum status { LASTLOG, LOGGEDIN }; 43 44 typedef struct where { 45 struct where *next; /* next place he is or has been */ 46 enum status info; /* type/status of request */ 47 short writable; /* tty is writable */ 48 time_t loginat; /* time of (last) login */ 49 time_t idletime; /* how long idle (if logged in) */ 50 char tty[UT_LINESIZE+1]; /* null terminated tty line */ 51 char host[UT_HOSTSIZE+1]; /* null terminated remote host name */ 52 } WHERE; 53 54 #define HBITS 8 /* number of bits in hash code */ 55 #define HSIZE (1 << 8) /* hash table size */ 56 #define HMASK (HSIZE - 1) /* hash code mask */ 57 58 PERSON *htab[HSIZE]; /* the buckets */ 59 PERSON *phead, *ptail; /* the linked list of all people */ 60 61 int entries; /* number of people */ 62 63 PERSON *enter_person(), *find_person(), *palloc(); 64 WHERE *walloc(); 65 66 extern char tbuf[1024]; /* temp buffer for anybody */ 67