GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/finger/finger.c Lines: 0 117 0.0 %
Date: 2017-11-13 Branches: 0 98 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: finger.c,v 1.26 2015/11/03 05:13:35 mmcc Exp $	*/
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/*
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 * Copyright (c) 1989 The Regents of the University of California.
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 * All rights reserved.
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 *
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 * This code is derived from software contributed to Berkeley by
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 * Tony Nardo of the Johns Hopkins University/Applied Physics Lab.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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/*
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 * Luke Mewburn <lukem@netbsd.org> added the following on 961121:
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 *    - mail status ("No Mail", "Mail read:...", or "New Mail ...,
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 *	Unread since ...".)
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 *    - 4 digit phone extensions (3210 is printed as x3210.)
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 *    - host/office toggling in short format with -h & -o.
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 *    - short day names (`Tue' printed instead of `Jun 21' if the
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 *	login time is < 6 days.
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 */
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/*
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 * Finger prints out information about users.  It is not portable since
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 * certain fields (e.g. the full user name, office, and phone numbers) are
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 * extracted from the gecos field of the passwd file which other UNIXes
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 * may not have or may use for other things.
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 *
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 * There are currently two output formats; the short format is one line
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 * per user and displays login name, tty, login time, real name, idle time,
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 * and either remote host information (default) or office location/phone
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 * number, depending on if -h or -o is used respectively.
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 * The long format gives the same information (in a more legible format) as
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 * well as home directory, shell, mail info, and .plan/.project files.
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 */
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#include <sys/file.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <limits.h>
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#include <err.h>
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#include "finger.h"
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#include "extern.h"
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time_t now;
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int entries, lflag, sflag, mflag, oflag, pplan, Mflag;
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char tbuf[1024];
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PERSON *htab[HSIZE];
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PERSON *phead, *ptail;
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int
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main(int argc, char *argv[])
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{
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	extern int optind;
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	extern char *__progname;
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	int ch;
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	char domain[HOST_NAME_MAX+1];
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	struct stat sb;
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	oflag = 1;		/* default to old "office" behavior */
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	while ((ch = getopt(argc, argv, "lmMpsho")) != -1)
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		switch(ch) {
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		case 'l':
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			lflag = 1;		/* long format */
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			break;
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		case 'm':
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			mflag = 1;		/* force exact match of names */
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			break;
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		case 'M':
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			Mflag = 1;		/* allow name matching */
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			break;
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		case 'p':
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			pplan = 1;		/* don't show .plan/.project */
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			break;
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		case 's':
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			sflag = 1;		/* short format */
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			break;
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		case 'h':
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			oflag = 0;		/* remote host info */
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			break;
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		case 'o':
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			oflag = 1;		/* office info */
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			break;
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		case '?':
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		default:
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			(void)fprintf(stderr,
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			    "usage: %s [-hlMmops] [login ...]\n", __progname);
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			exit(1);
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		}
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	argc -= optind;
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	argv += optind;
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	/* If a domainname is set, increment mflag. */
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	if ((getdomainname(domain, sizeof(domain)) == 0) && domain[0])
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		mflag++;
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	/* If _PATH_MP_DB is larger than 1MB, increment mflag. */
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	if (stat(_PATH_MP_DB, &sb) == 0) {
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		if (sb.st_size > 1048576)
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			mflag++;
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	}
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	if (pledge("stdio rpath getpw dns inet flock cpath wpath", NULL) == -1)
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		err(1, "pledge");
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	(void)time(&now);
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	if (!*argv) {
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		/*
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		 * Assign explicit "small" format if no names given and -l
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		 * not selected.  Force the -s BEFORE we get names so proper
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		 * screening will be done.
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		 */
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		if (pledge("stdio rpath getpw flock cpath wpath", NULL) == -1)
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			err(1, "pledge");
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		if (!lflag)
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			sflag = 1;	/* if -l not explicit, force -s */
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		loginlist();
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		if (entries == 0)
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			(void)printf("No one logged on.\n");
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	} else {
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		userlist(argc, argv);
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		/*
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		 * Assign explicit "large" format if names given and -s not
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		 * explicitly stated.  Force the -l AFTER we get names so any
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		 * remote finger attempts specified won't be mishandled.
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		 */
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		if (!sflag)
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			lflag = 1;	/* if -s not explicit, force -l */
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	}
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	if (entries != 0) {
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		if (lflag)
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			lflag_print();
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		else
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			sflag_print();
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	}
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	exit(0);
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}
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void
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loginlist(void)
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{
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	PERSON *pn;
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	struct passwd *pw;
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	struct utmp user;
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	char name[UT_NAMESIZE + 1];
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	if (!freopen(_PATH_UTMP, "r", stdin))
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		err(2, _PATH_UTMP);
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	name[UT_NAMESIZE] = '\0';
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	setpassent(1);
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	while (fread((char *)&user, sizeof(user), 1, stdin) == 1) {
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		if (!user.ut_name[0])
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			continue;
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		if ((pn = find_person(user.ut_name)) == NULL) {
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			bcopy(user.ut_name, name, UT_NAMESIZE);
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			if ((pw = getpwnam(name)) == NULL)
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				continue;
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			pn = enter_person(pw);
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		}
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		enter_where(&user, pn);
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	}
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	endpwent();
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	for (pn = phead; lflag && pn != NULL; pn = pn->next)
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		enter_lastlog(pn);
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}
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void
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userlist(int argc, char **argv)
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{
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	int i;
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	PERSON *pn;
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	PERSON *nethead, **nettail;
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	struct utmp user;
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	struct passwd *pw;
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	int dolocal, *used;
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	if (!(used = calloc((u_int)argc, (u_int)sizeof(int))))
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		err(2, "malloc");
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	/* pull out all network requests */
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	for (i = 0, dolocal = 0, nettail = &nethead; i < argc; i++) {
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		if (!strchr(argv[i], '@')) {
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			dolocal = 1;
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			continue;
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		}
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		pn = palloc();
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		*nettail = pn;
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		nettail = &pn->next;
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		pn->name = argv[i];
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		used[i] = -1;
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	}
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	*nettail = NULL;
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	if (!dolocal)
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		goto net;
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	if (nettail == &nethead)
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		if (pledge("stdio rpath getpw flock cpath wpath", NULL) == -1)
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			err(1, "pledge");
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	/*
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	 * traverse the list of possible login names and check the login name
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	 * and real name against the name specified by the user.
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	 */
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	setpassent(1);
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	if ((mflag - Mflag) > 0) {
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		for (i = 0; i < argc; i++)
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			if (used[i] >= 0 && (pw = getpwnam(argv[i]))) {
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				enter_person(pw);
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				used[i] = 1;
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			}
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	} else while ((pw = getpwent()) != NULL)
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		for (i = 0; i < argc; i++)
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			if (used[i] >= 0 &&
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			    (!strcasecmp(pw->pw_name, argv[i]) ||
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			    match(pw, argv[i]))) {
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				enter_person(pw);
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				used[i] = 1;
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			}
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	endpwent();
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	/* list errors */
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	for (i = 0; i < argc; i++)
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		if (!used[i])
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			warnx("%s: no such user.", argv[i]);
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	/* handle network requests */
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net:	for (pn = nethead; pn; pn = pn->next) {
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		netfinger(pn->name);
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		if (pn->next || entries)
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			putchar('\n');
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	}
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	free(used);
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	if (entries == 0)
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		return;
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	/*
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	 * Scan thru the list of users currently logged in, saving
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	 * appropriate data whenever a match occurs.
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	 */
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	if (!freopen(_PATH_UTMP, "r", stdin))
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		err(1, _PATH_UTMP);
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	while (fread((char *)&user, sizeof(user), 1, stdin) == 1) {
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		if (!user.ut_name[0])
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			continue;
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		if ((pn = find_person(user.ut_name)) == NULL)
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			continue;
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		enter_where(&user, pn);
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	}
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	for (pn = phead; pn != NULL; pn = pn->next)
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		enter_lastlog(pn);
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}