Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	bin/date/date.c	Lines:	25	118	21.2 %
Date:	2017-11-07	Branches:	14	87	16.1 %


/*	$OpenBSD: date.c,v 1.50 2016/10/19 18:20:25 schwarze Exp $	*/
/*	$NetBSD: date.c,v 1.11 1995/09/07 06:21:05 jtc Exp $	*/

/*
 * Copyright (c) 1985, 1987, 1988, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * 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.
 */

#include <sys/types.h>
#include <sys/time.h>

#include <ctype.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <time.h>
#include <unistd.h>
#include <util.h>

extern	char *__progname;

time_t tval;
int jflag;
int slidetime;

static void setthetime(char *);
static void badformat(void);
static void __dead usage(void);

int
main(int argc, char *argv[])
{
	struct timezone tz;
	const char *errstr;
	struct tm *tp;
	int ch, rflag;
	char *format, buf[1024], *outzone = NULL;

	tz.tz_dsttime = tz.tz_minuteswest = 0;
	rflag = 0;
	while ((ch = getopt(argc, argv, "ad:jr:ut:z:")) != -1)
		switch(ch) {
		case 'd':		/* daylight saving time */
			tz.tz_dsttime = atoi(optarg) ? 1 : 0;
			break;
		case 'a':
			slidetime = 1;
			break;
		case 'j':		/* don't set */
			jflag = 1;
			break;
		case 'r':		/* user specified seconds */
			rflag = 1;
			tval = atoll(optarg);
			break;
		case 'u':		/* do everything in UTC */
			if (setenv("TZ", "UTC", 1) == -1)
				err(1, "cannot unsetenv TZ");
			break;
		case 't':		/* minutes west of GMT */
			tz.tz_minuteswest = strtonum(optarg, 0, 24*60-1, &errstr);
			if (errstr)
				errx(1, "-t %s: %s", optarg, errstr);
			break;
		case 'z':
			outzone = optarg;
			break;
		default:
			usage();
		}
	argc -= optind;
	argv += optind;

	/*
	 * If -d or -t, set the timezone or daylight saving time; this
	 * doesn't belong here, the kernel should not know about either.
	 */
	if ((tz.tz_minuteswest || tz.tz_dsttime) &&
	    settimeofday(NULL, &tz))
		err(1, "settimeofday");

	if (!rflag && time(&tval) == -1)
		err(1, "time");

	format = "%a %b %e %H:%M:%S %Z %Y";

	/* allow the operands in any order */
	if (*argv && **argv == '+') {
		format = *argv + 1;
		argv++;
		argc--;
	}

	if (*argv) {
		setthetime(*argv);
		argv++;
		argc--;
	}

	if (pledge("stdio rpath wpath flock cpath", NULL) == -1)
		err(1, "pledge");

	if (*argv && **argv == '+') {
		format = *argv + 1;
		argc--;
	}

	if (argc > 0)
		errx(1, "too many arguments");

	if (outzone)
		setenv("TZ", outzone, 1);

	tp = localtime(&tval);
	if (tp == NULL)
		errx(1, "conversion error");
	(void)strftime(buf, sizeof(buf), format, tp);
	(void)printf("%s\n", buf);
	return 0;
}

#define	ATOI2(ar)	((ar) += 2, ((ar)[-2] - '0') * 10 + ((ar)[-1] - '0'))
void
setthetime(char *p)
{
	struct tm *lt;
	struct timeval tv;
	char *dot, *t;
	int yearset = 0;

	for (t = p, dot = NULL; *t; ++t) {
		if (isdigit((unsigned char)*t))
			continue;
		if (*t == '.' && dot == NULL) {
			dot = t;
			continue;
		}
		badformat();
	}

	lt = localtime(&tval);

	lt->tm_isdst = -1;			/* correct for DST */

	if (dot != NULL) {			/* .SS */
		*dot++ = '\0';
		if (strlen(dot) != 2)
			badformat();
		lt->tm_sec = ATOI2(dot);
		if (lt->tm_sec > 61)
			badformat();
	} else
		lt->tm_sec = 0;

	switch (strlen(p)) {
	case 12:				/* cc */
		lt->tm_year = (ATOI2(p) * 100) - 1900;
		yearset = 1;
		/* FALLTHROUGH */
	case 10:				/* yy */
		if (!yearset) {
			/* mask out current year, leaving only century */
			lt->tm_year = ((lt->tm_year / 100) * 100);
		}
		lt->tm_year += ATOI2(p);
		/* FALLTHROUGH */
	case 8:					/* mm */
		lt->tm_mon = ATOI2(p);
		if ((lt->tm_mon > 12) || !lt->tm_mon)
			badformat();
		--lt->tm_mon;			/* time struct is 0 - 11 */
		/* FALLTHROUGH */
	case 6:					/* dd */
		lt->tm_mday = ATOI2(p);
		if ((lt->tm_mday > 31) || !lt->tm_mday)
			badformat();
		/* FALLTHROUGH */
	case 4:					/* HH */
		lt->tm_hour = ATOI2(p);
		if (lt->tm_hour > 23)
			badformat();
		/* FALLTHROUGH */
	case 2:					/* MM */
		lt->tm_min = ATOI2(p);
		if (lt->tm_min > 59)
			badformat();
		break;
	default:
		badformat();
	}

	/* convert broken-down time to UTC clock time */
	if ((tval = mktime(lt)) < 0)
		errx(1, "specified date is outside allowed range");

	if (jflag)
		return;

	/* set the time */
	if (slidetime) {
		struct timeval tv_current;

		if (gettimeofday(&tv_current, NULL) == -1)
			err(1, "Could not get local time of day");

		tv.tv_sec = tval - tv_current.tv_sec;
		tv.tv_usec = 0;
		if (adjtime(&tv, NULL) == -1)
			errx(1, "adjtime");
	} else {
#ifndef SMALL
		logwtmp("|", "date", "");
#endif
		tv.tv_sec = tval;
		tv.tv_usec = 0;
		if (settimeofday(&tv, NULL))
			err(1, "settimeofday");
#ifndef SMALL
		logwtmp("{", "date", "");
#endif
	}

	if ((p = getlogin()) == NULL)
		p = "???";
	syslog(LOG_AUTH | LOG_NOTICE, "date set by %s", p);
}

static void
badformat(void)
{
	warnx("illegal time format");
	usage();
}

static void __dead
usage(void)
{
	(void)fprintf(stderr,
	    "usage: %s [-aju] [-d dst] [-r seconds] [-t minutes_west] [-z output_zone]\n",
	     __progname);
	(void)fprintf(stderr,
	    "%-*s[+format] [[[[[[cc]yy]mm]dd]HH]MM[.SS]]\n", (int)strlen(__progname) + 8, "");
	exit(1);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: date.c,v 1.50 2016/10/19 18:20:25 schwarze Exp $ */
2			/* $NetBSD: date.c,v 1.11 1995/09/07 06:21:05 jtc Exp $ */
3
4			/*
5			* Copyright (c) 1985, 1987, 1988, 1993
6			* The Regents of the University of California. All rights reserved.
7			*
8			* Redistribution and use in source and binary forms, with or without
9			* modification, are permitted provided that the following conditions
10			* are met:
11			* 1. Redistributions of source code must retain the above copyright
12			* notice, this list of conditions and the following disclaimer.
13			* 2. Redistributions in binary form must reproduce the above copyright
14			* notice, this list of conditions and the following disclaimer in the
15			* documentation and/or other materials provided with the distribution.
16			* 3. Neither the name of the University nor the names of its contributors
17			* may be used to endorse or promote products derived from this software
18			* without specific prior written permission.
19			*
20			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30			* SUCH DAMAGE.
31			*/
32
33			#include <sys/types.h>
34			#include <sys/time.h>
35
36			#include <ctype.h>
37			#include <err.h>
38			#include <fcntl.h>
39			#include <stdio.h>
40			#include <stdlib.h>
41			#include <string.h>
42			#include <syslog.h>
43			#include <time.h>
44			#include <unistd.h>
45			#include <util.h>
46
47			extern char *__progname;
48
49			time_t tval;
50			int jflag;
51			int slidetime;
52
53			static void setthetime(char *);
54			static void badformat(void);
55			static void __dead usage(void);
56
57			int
58			main(int argc, char *argv[])
59			{
60		452	struct timezone tz;
61		226	const char *errstr;
62			struct tm *tp;
63			int ch, rflag;
64		226	char format, buf[1024], outzone = NULL;
65
66		226	tz.tz_dsttime = tz.tz_minuteswest = 0;
67			rflag = 0;
68	✗✓	452	while ((ch = getopt(argc, argv, "ad:jr:ut:z:")) != -1)
69			switch(ch) {
70			case 'd': /* daylight saving time */
71			tz.tz_dsttime = atoi(optarg) ? 1 : 0;
72			break;
73			case 'a':
74			slidetime = 1;
75			break;
76			case 'j': /* don't set */
77			jflag = 1;
78			break;
79			case 'r': /* user specified seconds */
80			rflag = 1;
81			tval = atoll(optarg);
82			break;
83			case 'u': /* do everything in UTC */
84			if (setenv("TZ", "UTC", 1) == -1)
85			err(1, "cannot unsetenv TZ");
86			break;
87			case 't': /* minutes west of GMT */
88			tz.tz_minuteswest = strtonum(optarg, 0, 24*60-1, &errstr);
89			if (errstr)
90			errx(1, "-t %s: %s", optarg, errstr);
91			break;
92			case 'z':
93			outzone = optarg;
94			break;
95			default:
96			usage();
97			}
98		226	argc -= optind;
99		226	argv += optind;
100
101			/*
102			* If -d or -t, set the timezone or daylight saving time; this
103			* doesn't belong here, the kernel should not know about either.
104			*/
105	✓✗✗✓ ✗✗	452	if ((tz.tz_minuteswest \|\| tz.tz_dsttime) &&
106			settimeofday(NULL, &tz))
107			err(1, "settimeofday");
108
109	✓✗✗✓	452	if (!rflag && time(&tval) == -1)
110			err(1, "time");
111
112			format = "%a %b %e %H:%M:%S %Z %Y";
113
114			/* allow the operands in any order */
115	✓✓✓✗	402	if (argv && *argv == '+') {
116		176	format = *argv + 1;
117		176	argv++;
118		176	argc--;
119		176	}
120
121	✗✓	226	if (*argv) {
122			setthetime(*argv);
123			argv++;
124			argc--;
125			}
126
127	✗✓	226	if (pledge("stdio rpath wpath flock cpath", NULL) == -1)
128			err(1, "pledge");
129
130	✗✓✗✗	226	if (argv && *argv == '+') {
131			format = *argv + 1;
132			argc--;
133			}
134
135	✗✓	226	if (argc > 0)
136			errx(1, "too many arguments");
137
138	✗✓	226	if (outzone)
139			setenv("TZ", outzone, 1);
140
141		226	tp = localtime(&tval);
142	✗✓	226	if (tp == NULL)
143			errx(1, "conversion error");
144		226	(void)strftime(buf, sizeof(buf), format, tp);
145		226	(void)printf("%s\n", buf);
146		226	return 0;
147		226	}
148
149			#define ATOI2(ar) ((ar) += 2, ((ar)[-2] - '0') * 10 + ((ar)[-1] - '0'))
150			void
151			setthetime(char *p)
152			{
153			struct tm *lt;
154			struct timeval tv;
155			char dot, t;
156			int yearset = 0;
157
158			for (t = p, dot = NULL; *t; ++t) {
159			if (isdigit((unsigned char)*t))
160			continue;
161			if (*t == '.' && dot == NULL) {
162			dot = t;
163			continue;
164			}
165			badformat();
166			}
167
168			lt = localtime(&tval);
169
170			lt->tm_isdst = -1; /* correct for DST */
171
172			if (dot != NULL) { /* .SS */
173			*dot++ = '\0';
174			if (strlen(dot) != 2)
175			badformat();
176			lt->tm_sec = ATOI2(dot);
177			if (lt->tm_sec > 61)
178			badformat();
179			} else
180			lt->tm_sec = 0;
181
182			switch (strlen(p)) {
183			case 12: /* cc */
184			lt->tm_year = (ATOI2(p) * 100) - 1900;
185			yearset = 1;
186			/* FALLTHROUGH */
187			case 10: /* yy */
188			if (!yearset) {
189			/* mask out current year, leaving only century */
190			lt->tm_year = ((lt->tm_year / 100) * 100);
191			}
192			lt->tm_year += ATOI2(p);
193			/* FALLTHROUGH */
194			case 8: /* mm */
195			lt->tm_mon = ATOI2(p);
196			if ((lt->tm_mon > 12) \|\| !lt->tm_mon)
197			badformat();
198			--lt->tm_mon; /* time struct is 0 - 11 */
199			/* FALLTHROUGH */
200			case 6: /* dd */
201			lt->tm_mday = ATOI2(p);
202			if ((lt->tm_mday > 31) \|\| !lt->tm_mday)
203			badformat();
204			/* FALLTHROUGH */
205			case 4: /* HH */
206			lt->tm_hour = ATOI2(p);
207			if (lt->tm_hour > 23)
208			badformat();
209			/* FALLTHROUGH */
210			case 2: /* MM */
211			lt->tm_min = ATOI2(p);
212			if (lt->tm_min > 59)
213			badformat();
214			break;
215			default:
216			badformat();
217			}
218
219			/* convert broken-down time to UTC clock time */
220			if ((tval = mktime(lt)) < 0)
221			errx(1, "specified date is outside allowed range");
222
223			if (jflag)
224			return;
225
226			/* set the time */
227			if (slidetime) {
228			struct timeval tv_current;
229
230			if (gettimeofday(&tv_current, NULL) == -1)
231			err(1, "Could not get local time of day");
232
233			tv.tv_sec = tval - tv_current.tv_sec;
234			tv.tv_usec = 0;
235			if (adjtime(&tv, NULL) == -1)
236			errx(1, "adjtime");
237			} else {
238			#ifndef SMALL
239			logwtmp("\|", "date", "");
240			#endif
241			tv.tv_sec = tval;
242			tv.tv_usec = 0;
243			if (settimeofday(&tv, NULL))
244			err(1, "settimeofday");
245			#ifndef SMALL
246			logwtmp("{", "date", "");
247			#endif
248			}
249
250			if ((p = getlogin()) == NULL)
251			p = "???";
252			syslog(LOG_AUTH \| LOG_NOTICE, "date set by %s", p);
253			}
254
255			static void
256			badformat(void)
257			{
258			warnx("illegal time format");
259			usage();
260			}
261
262			static void __dead
263			usage(void)
264			{
265			(void)fprintf(stderr,
266			"usage: %s [-aju] [-d dst] [-r seconds] [-t minutes_west] [-z output_zone]\n",
267			__progname);
268			(void)fprintf(stderr,
269			"%-*s[+format] [[[[[[cc]yy]mm]dd]HH]MM[.SS]]\n", (int)strlen(__progname) + 8, "");
270			exit(1);
271			}