* Copyright (c) 1989 The Regents of the University of California.
* This code is derived from software contributed to Berkeley by
* Tony Nardo of the Johns Hopkins University/Applied Physics Lab.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
"@(#) Copyright (c) 1989 The Regents of the University of California.\n\
static char sccsid
[] = "@(#)finger.c 5.22 (Berkeley) 6/29/90";
* Finger prints out information about users. It is not portable since
* certain fields (e.g. the full user name, office, and phone numbers) are
* extracted from the gecos field of the passwd file which other UNIXes
* may not have or may use for other things.
* There are currently two output formats; the short format is one line
* per user and displays login name, tty, login time, real name, idle time,
* and office location/phone number. The long format gives the same
* information (in a more legible format) as well as home directory, shell,
* mail info, and .plan/.project files.
int lflag
, sflag
, mflag
, pplan
;
while ((ch
= getopt(argc
, argv
, "lmps")) != EOF
)
lflag
= 1; /* long format */
mflag
= 1; /* force exact match of names */
pplan
= 1; /* don't show .plan/.project */
sflag
= 1; /* short format */
"usage: finger [-lmps] [login ...]\n");
* Assign explicit "small" format if no names given and -l
* not selected. Force the -s BEFORE we get names so proper
* screening will be done.
sflag
= 1; /* if -l not explicit, force -s */
(void)printf("No one logged on.\n");
* Assign explicit "large" format if names given and -s not
* explicitly stated. Force the -l AFTER we get names so any
* remote finger attempts specified won't be mishandled.
lflag
= 1; /* if -s not explicit, force -l */
char name
[UT_NAMESIZE
+ 1];
if (!freopen(_PATH_UTMP
, "r", stdin
)) {
(void)fprintf(stderr
, "finger: can't read %s.\n", _PATH_UTMP
);
name
[UT_NAMESIZE
] = NULL
;
while (fread((char *)&user
, sizeof(user
), 1, stdin
) == 1) {
if ((pn
= find_person(user
.ut_name
)) == NULL
) {
bcopy(user
.ut_name
, name
, UT_NAMESIZE
);
if ((pw
= getpwnam(name
)) == NULL
)
for (pn
= phead
; lflag
&& pn
!= NULL
; pn
= pn
->next
)
PERSON
*nethead
, **nettail
;
if (!(used
= (int *)calloc((u_int
)argc
, (u_int
)sizeof(int)))) {
(void)fprintf(stderr
, "finger: out of space.\n");
/* pull out all network requests */
for (i
= 0, dolocal
= 0, nettail
= &nethead
; i
< argc
; i
++) {
if (!index(argv
[i
], '@')) {
* traverse the list of possible login names and check the login name
* and real name against the name specified by the user.
for (i
= 0; i
< argc
; i
++)
if (used
[i
] >= 0 && (pw
= getpwnam(argv
[i
]))) {
} else while (pw
= getpwent())
for (i
= 0; i
< argc
; i
++)
(!strcasecmp(pw
->pw_name
, argv
[i
]) ||
for (i
= 0; i
< argc
; i
++)
"finger: %s: no such user.\n", argv
[i
]);
/* handle network requests */
net
: for (pn
= nethead
; pn
; pn
= pn
->next
) {
* Scan thru the list of users currently logged in, saving
* appropriate data whenever a match occurs.
if (!freopen(_PATH_UTMP
, "r", stdin
)) {
(void)fprintf( stderr
, "finger: can't read %s.\n", _PATH_UTMP
);
while (fread((char *)&user
, sizeof(user
), 1, stdin
) == 1) {
if ((pn
= find_person(user
.ut_name
)) == NULL
)
for (pn
= phead
; pn
!= NULL
; pn
= pn
->next
)