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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/lock/lock.c	Lines:	0	88	0.0 %
Date:	2016-12-06	Branches:	0	61	0.0 %


/*	$OpenBSD: lock.c,v 1.33 2016/05/28 16:11:10 tedu Exp $	*/
/*	$NetBSD: lock.c,v 1.8 1996/05/07 18:32:31 jtc Exp $	*/

/*
 * Copyright (c) 1980, 1987, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Bob Toxen.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 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. 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
 * SUCH DAMAGE.
 */

/*
 * Lock a terminal up until the given key is entered, until the root
 * password is entered, or the given interval times out.
 *
 * Timeout interval is by default TIMEOUT, it can be changed with
 * an argument of the form -time where time is in minutes
 */

#include <sys/stat.h>
#include <sys/time.h>
#include <signal.h>

#include <ctype.h>
#include <err.h>
#include <pwd.h>
#include <readpassphrase.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include <limits.h>

#include <login_cap.h>
#include <bsd_auth.h>

#define	TIMEOUT	15

void bye(int);
void hi(int);

struct timeval	timeout;
struct timeval	zerotime;
time_t	nexttime;			/* keep the timeout time */
int	no_timeout;			/* lock terminal forever */

extern	char *__progname;

/*ARGSUSED*/
int
main(int argc, char *argv[])
{
	char hostname[HOST_NAME_MAX+1], s[BUFSIZ], s1[BUFSIZ], date[256];
	char *p, *style, *nstyle, *ttynam;
	struct itimerval ntimer, otimer;
	int ch, sectimeout, usemine, cnt, tries = 10, backoff = 3;
	const char *errstr;
	struct passwd *pw;
	struct tm *timp;
	time_t curtime;
	login_cap_t *lc;

	sectimeout = TIMEOUT;
	style = NULL;
	usemine = 0;
	no_timeout = 0;

	if (pledge("stdio rpath wpath getpw tty proc exec cpath", NULL) == -1)
		err(1, "pledge");

	if (!(pw = getpwuid(getuid())))
		errx(1, "unknown uid %u.", getuid());

	lc = login_getclass(pw->pw_class);
	if (lc != NULL) {
		/*
		 * We allow "login-tries" attempts to login but start
		 * slowing down after "login-backoff" attempts.
		 */
		tries = (int)login_getcapnum(lc, "login-tries", 10, 10);
		backoff = (int)login_getcapnum(lc, "login-backoff", 3, 3);
	}

	while ((ch = getopt(argc, argv, "a:npt:")) != -1) {
		switch (ch) {
		case 'a':
			if (lc) {
				style = login_getstyle(lc, optarg, "auth-lock");
				if (style == NULL)
					errx(1,
					    "invalid authentication style: %s",
					    optarg);
			}
			usemine = 1;
			break;
		case 't':
			sectimeout = (int)strtonum(optarg, 1, INT_MAX, &errstr);
			if (errstr)
				errx(1, "timeout %s: %s", errstr, optarg);
			break;
		case 'p':
			usemine = 1;
			break;
		case 'n':
			no_timeout = 1;
			break;
		default:
			(void)fprintf(stderr,
			    "usage: %s [-np] [-a style] [-t timeout]\n",
			    __progname);
			exit(1);
		}
	}
	timeout.tv_sec = sectimeout * 60;

	gethostname(hostname, sizeof(hostname));
	if (usemine && lc == NULL)
		errx(1, "login class not found");
	if (!(ttynam = ttyname(STDIN_FILENO)))
		errx(1, "not a terminal?");
	curtime = time(NULL);
	nexttime = curtime + (sectimeout * 60);
	timp = localtime(&curtime);
	strftime(date, sizeof(date), "%c", timp);

	if (!usemine) {
		/* get key and check again */
		if (!readpassphrase("Key: ", s, sizeof(s), RPP_ECHO_OFF) ||
		    *s == '\0')
			exit(0);
		/*
		 * Don't need EOF test here, if we get EOF, then s1 != s
		 * and the right things will happen.
		 */
		(void)readpassphrase("Again: ", s1, sizeof(s1), RPP_ECHO_OFF);
		if (strcmp(s1, s)) {
			warnx("\apasswords didn't match.");
			exit(1);
		}
		s[0] = '\0';
	}

	/* set signal handlers */
	(void)signal(SIGINT, hi);
	(void)signal(SIGQUIT, hi);
	(void)signal(SIGTSTP, hi);
	(void)signal(SIGALRM, bye);

	ntimer.it_interval = zerotime;
	ntimer.it_value = timeout;
	if (!no_timeout)
		setitimer(ITIMER_REAL, &ntimer, &otimer);

	/* header info */
	if (no_timeout) {
		(void)fprintf(stderr,
		    "%s: %s on %s. no timeout\ntime now is %s\n",
		    __progname, ttynam, hostname, date);
	} else {
		(void)fprintf(stderr,
		    "%s: %s on %s. timeout in %d minutes\ntime now is %s\n",
		    __progname, ttynam, hostname, sectimeout, date);
	}

	for (cnt = 0;;) {
		if (!readpassphrase("Key: ", s, sizeof(s), RPP_ECHO_OFF) ||
		    *s == '\0') {
			hi(0);
			continue;
		}
		if (usemine) {
			/*
			 * If user entered 's/key' or the style specified via
			 * the '-a' argument, auth_userokay() will prompt
			 * for a new password.  Otherwise, use what we have.
			 */
			if ((strcmp(s, "s/key") == 0 &&
			    (nstyle = login_getstyle(lc, "skey", "auth-lock")))
			    || ((nstyle = style) && strcmp(s, nstyle) == 0))
				p = NULL;
			else
				p = s;
			if (auth_userokay(pw->pw_name, nstyle, "auth-lock", p))
				break;
		} else if (strcmp(s, s1) == 0)
			break;
		(void)putc('\a', stderr);
		cnt %= tries;
		if (++cnt > backoff) {
			sigset_t set, oset;
			sigfillset(&set);
			sigprocmask(SIG_BLOCK, &set, &oset);
			sleep((u_int)((cnt - backoff) * tries / 2));
			sigprocmask(SIG_SETMASK, &oset, NULL);
		}
	}

	exit(0);
}

/*ARGSUSED*/
void
hi(int signo)
{
	char buf[1024], buf2[1024];
	time_t left;

	if (no_timeout)
		buf2[0] = '\0';
	else {
		left = nexttime - time(NULL);
		(void)snprintf(buf2, sizeof buf2, " timeout in %lld:%d minutes",
		    (long long)(left / 60), (int)(left % 60));
	}
	(void)snprintf(buf, sizeof buf, "%s: type in the unlock key.%s\n",
	    __progname, buf2);
	(void) write(STDERR_FILENO, buf, strlen(buf));
}

/*ARGSUSED*/
void
bye(int signo)
{

	if (!no_timeout)
		warnx("timeout");
	_exit(1);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: lock.c,v 1.33 2016/05/28 16:11:10 tedu Exp $ */
2			/* $NetBSD: lock.c,v 1.8 1996/05/07 18:32:31 jtc Exp $ */
3
4			/*
5			* Copyright (c) 1980, 1987, 1993
6			* The Regents of the University of California. All rights reserved.
7			*
8			* This code is derived from software contributed to Berkeley by
9			* Bob Toxen.
10			*
11			* Redistribution and use in source and binary forms, with or without
12			* modification, are permitted provided that the following conditions
13			* are met:
14			* 1. Redistributions of source code must retain the above copyright
15			* notice, this list of conditions and the following disclaimer.
16			* 2. Redistributions in binary form must reproduce the above copyright
17			* notice, this list of conditions and the following disclaimer in the
18			* documentation and/or other materials provided with the distribution.
19			* 3. Neither the name of the University nor the names of its contributors
20			* may be used to endorse or promote products derived from this software
21			* without specific prior written permission.
22			*
23			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33			* SUCH DAMAGE.
34			*/
35
36			/*
37			* Lock a terminal up until the given key is entered, until the root
38			* password is entered, or the given interval times out.
39			*
40			* Timeout interval is by default TIMEOUT, it can be changed with
41			* an argument of the form -time where time is in minutes
42			*/
43
44			#include <sys/stat.h>
45			#include <sys/time.h>
46			#include <signal.h>
47
48			#include <ctype.h>
49			#include <err.h>
50			#include <pwd.h>
51			#include <readpassphrase.h>
52			#include <stdio.h>
53			#include <stdlib.h>
54			#include <string.h>
55			#include <termios.h>
56			#include <unistd.h>
57			#include <limits.h>
58
59			#include <login_cap.h>
60			#include <bsd_auth.h>
61
62			#define TIMEOUT 15
63
64			void bye(int);
65			void hi(int);
66
67			struct timeval timeout;
68			struct timeval zerotime;
69			time_t nexttime; /* keep the timeout time */
70			int no_timeout; /* lock terminal forever */
71
72			extern char *__progname;
73
74			/ARGSUSED/
75			int
76			main(int argc, char *argv[])
77			{
78			char hostname[HOST_NAME_MAX+1], s[BUFSIZ], s1[BUFSIZ], date[256];
79			char p, style, nstyle, ttynam;
80			struct itimerval ntimer, otimer;
81			int ch, sectimeout, usemine, cnt, tries = 10, backoff = 3;
82			const char *errstr;
83			struct passwd *pw;
84			struct tm *timp;
85			time_t curtime;
86			login_cap_t *lc;
87
88			sectimeout = TIMEOUT;
89			style = NULL;
90			usemine = 0;
91			no_timeout = 0;
92
93			if (pledge("stdio rpath wpath getpw tty proc exec cpath", NULL) == -1)
94			err(1, "pledge");
95
96			if (!(pw = getpwuid(getuid())))
97			errx(1, "unknown uid %u.", getuid());
98
99			lc = login_getclass(pw->pw_class);
100			if (lc != NULL) {
101			/*
102			* We allow "login-tries" attempts to login but start
103			* slowing down after "login-backoff" attempts.
104			*/
105			tries = (int)login_getcapnum(lc, "login-tries", 10, 10);
106			backoff = (int)login_getcapnum(lc, "login-backoff", 3, 3);
107			}
108
109			while ((ch = getopt(argc, argv, "a:npt:")) != -1) {
110			switch (ch) {
111			case 'a':
112			if (lc) {
113			style = login_getstyle(lc, optarg, "auth-lock");
114			if (style == NULL)
115			errx(1,
116			"invalid authentication style: %s",
117			optarg);
118			}
119			usemine = 1;
120			break;
121			case 't':
122			sectimeout = (int)strtonum(optarg, 1, INT_MAX, &errstr);
123			if (errstr)
124			errx(1, "timeout %s: %s", errstr, optarg);
125			break;
126			case 'p':
127			usemine = 1;
128			break;
129			case 'n':
130			no_timeout = 1;
131			break;
132			default:
133			(void)fprintf(stderr,
134			"usage: %s [-np] [-a style] [-t timeout]\n",
135			__progname);
136			exit(1);
137			}
138			}
139			timeout.tv_sec = sectimeout * 60;
140
141			gethostname(hostname, sizeof(hostname));
142			if (usemine && lc == NULL)
143			errx(1, "login class not found");
144			if (!(ttynam = ttyname(STDIN_FILENO)))
145			errx(1, "not a terminal?");
146			curtime = time(NULL);
147			nexttime = curtime + (sectimeout * 60);
148			timp = localtime(&curtime);
149			strftime(date, sizeof(date), "%c", timp);
150
151			if (!usemine) {
152			/* get key and check again */
153			if (!readpassphrase("Key: ", s, sizeof(s), RPP_ECHO_OFF) \|\|
154			*s == '\0')
155			exit(0);
156			/*
157			* Don't need EOF test here, if we get EOF, then s1 != s
158			* and the right things will happen.
159			*/
160			(void)readpassphrase("Again: ", s1, sizeof(s1), RPP_ECHO_OFF);
161			if (strcmp(s1, s)) {
162			warnx("\apasswords didn't match.");
163			exit(1);
164			}
165			s[0] = '\0';
166			}
167
168			/* set signal handlers */
169			(void)signal(SIGINT, hi);
170			(void)signal(SIGQUIT, hi);
171			(void)signal(SIGTSTP, hi);
172			(void)signal(SIGALRM, bye);
173
174			ntimer.it_interval = zerotime;
175			ntimer.it_value = timeout;
176			if (!no_timeout)
177			setitimer(ITIMER_REAL, &ntimer, &otimer);
178
179			/* header info */
180			if (no_timeout) {
181			(void)fprintf(stderr,
182			"%s: %s on %s. no timeout\ntime now is %s\n",
183			__progname, ttynam, hostname, date);
184			} else {
185			(void)fprintf(stderr,
186			"%s: %s on %s. timeout in %d minutes\ntime now is %s\n",
187			__progname, ttynam, hostname, sectimeout, date);
188			}
189
190			for (cnt = 0;;) {
191			if (!readpassphrase("Key: ", s, sizeof(s), RPP_ECHO_OFF) \|\|
192			*s == '\0') {
193			hi(0);
194			continue;
195			}
196			if (usemine) {
197			/*
198			* If user entered 's/key' or the style specified via
199			* the '-a' argument, auth_userokay() will prompt
200			* for a new password. Otherwise, use what we have.
201			*/
202			if ((strcmp(s, "s/key") == 0 &&
203			(nstyle = login_getstyle(lc, "skey", "auth-lock")))
204			\|\| ((nstyle = style) && strcmp(s, nstyle) == 0))
205			p = NULL;
206			else
207			p = s;
208			if (auth_userokay(pw->pw_name, nstyle, "auth-lock", p))
209			break;
210			} else if (strcmp(s, s1) == 0)
211			break;
212			(void)putc('\a', stderr);
213			cnt %= tries;
214			if (++cnt > backoff) {
215			sigset_t set, oset;
216			sigfillset(&set);
217			sigprocmask(SIG_BLOCK, &set, &oset);
218			sleep((u_int)((cnt - backoff) * tries / 2));
219			sigprocmask(SIG_SETMASK, &oset, NULL);
220			}
221			}
222
223			exit(0);
224			}
225
226			/ARGSUSED/
227			void
228			hi(int signo)
229			{
230			char buf[1024], buf2[1024];
231			time_t left;
232
233			if (no_timeout)
234			buf2[0] = '\0';
235			else {
236			left = nexttime - time(NULL);
237			(void)snprintf(buf2, sizeof buf2, " timeout in %lld:%d minutes",
238			(long long)(left / 60), (int)(left % 60));
239			}
240			(void)snprintf(buf, sizeof buf, "%s: type in the unlock key.%s\n",
241			__progname, buf2);
242			(void) write(STDERR_FILENO, buf, strlen(buf));
243			}
244
245			/ARGSUSED/
246			void
247			bye(int signo)
248			{
249
250			if (!no_timeout)
251			warnx("timeout");
252			_exit(1);
253			}