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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/ntpd/util.c	Lines:	0	71	0.0 %
Date:	2017-11-13	Branches:	0	31	0.0 %


/*	$OpenBSD: util.c,v 1.24 2017/03/01 00:56:30 gsoares Exp $ */

/*
 * Copyright (c) 2004 Alexander Guy <alexander.guy@andern.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>

#include "ntpd.h"

double
gettime_corrected(void)
{
	return (gettime() + getoffset());
}

double
getoffset(void)
{
	struct timeval	tv;
	if (adjtime(NULL, &tv) == -1)
		return (0.0);
	return (tv.tv_sec + 1.0e-6 * tv.tv_usec);
}

double
gettime(void)
{
	struct timeval	tv;

	if (gettimeofday(&tv, NULL) == -1)
		fatal("gettimeofday");

	return (gettime_from_timeval(&tv));
}

double
gettime_from_timeval(struct timeval *tv)
{
	/*
	 * Account for overflow on OSes that have a 32-bit time_t.
	 */
	return ((uint64_t)tv->tv_sec + JAN_1970 + 1.0e-6 * tv->tv_usec);
}

time_t
getmonotime(void)
{
	struct timespec	ts;

	if (clock_gettime(CLOCK_MONOTONIC, &ts) != 0)
		fatal("clock_gettime");

	return (ts.tv_sec);
}


void
d_to_tv(double d, struct timeval *tv)
{
	tv->tv_sec = d;
	tv->tv_usec = (d - tv->tv_sec) * 1000000;
	while (tv->tv_usec < 0) {
		tv->tv_usec += 1000000;
		tv->tv_sec -= 1;
	}
}

double
lfp_to_d(struct l_fixedpt lfp)
{
	double	ret;

	lfp.int_partl = ntohl(lfp.int_partl);
	lfp.fractionl = ntohl(lfp.fractionl);

	ret = (double)(lfp.int_partl) + ((double)lfp.fractionl / UINT_MAX);

	return (ret);
}

struct l_fixedpt
d_to_lfp(double d)
{
	struct l_fixedpt	lfp;

	lfp.int_partl = htonl((u_int32_t)d);
	lfp.fractionl = htonl((u_int32_t)((d - (u_int32_t)d) * UINT_MAX));

	return (lfp);
}

double
sfp_to_d(struct s_fixedpt sfp)
{
	double	ret;

	sfp.int_parts = ntohs(sfp.int_parts);
	sfp.fractions = ntohs(sfp.fractions);

	ret = (double)(sfp.int_parts) + ((double)sfp.fractions / USHRT_MAX);

	return (ret);
}

struct s_fixedpt
d_to_sfp(double d)
{
	struct s_fixedpt	sfp;

	sfp.int_parts = htons((u_int16_t)d);
	sfp.fractions = htons((u_int16_t)((d - (u_int16_t)d) * USHRT_MAX));

	return (sfp);
}

char *
print_rtable(int r)
{
	static char b[11];

	b[0] = 0;
	if (r > 0)
		snprintf(b, sizeof(b), "rtable %d", r);

	return (b);
}

const char *
log_sockaddr(struct sockaddr *sa)
{
	static char	buf[NI_MAXHOST];

	if (getnameinfo(sa, SA_LEN(sa), buf, sizeof(buf), NULL, 0,
	    NI_NUMERICHOST))
		return ("(unknown)");
	else
		return (buf);
}

pid_t
start_child(char *pname, int cfd, int argc, char **argv)
{
	char		**nargv;
	int		  nargc, i;
	pid_t		  pid;

	/* Prepare the child process new argv. */
	nargv = calloc(argc + 3, sizeof(char *));
	if (nargv == NULL)
		fatal("%s: calloc", __func__);

	/* Copy the program name first. */
	nargc = 0;
	nargv[nargc++] = argv[0];

	/* Set the process name and copy the original args. */
	nargv[nargc++] = "-P";
	nargv[nargc++] = pname;
	for (i = 1; i < argc; i++)
		nargv[nargc++] = argv[i];

	nargv[nargc] = NULL;

	switch (pid = fork()) {
	case -1:
		fatal("%s: fork", __func__);
		break;
	case 0:
		/* Prepare the parent socket and execute. */
		if (cfd != PARENT_SOCK_FILENO) {
			if (dup2(cfd, PARENT_SOCK_FILENO) == -1)
				fatal("dup2");
		} else if (fcntl(cfd, F_SETFD, 0) == -1)
			fatal("fcntl");

		execvp(argv[0], nargv);
		fatal("%s: execvp", __func__);
		break;

	default:
		/* Close child's socket end. */
		close(cfd);
		break;
	}

	free(nargv);
	return (pid);
}

int
sanitize_argv(int *argc, char ***argv)
{
	char		**nargv;
	int		  nargc;
	int		  i;

	/*
	 * We need at least three arguments:
	 * Example: '/usr/sbin/ntpd' '-P' 'foobar'.
	 */
	if (*argc < 3)
		return (-1);

	*argc -= 2;

	/* Allocate new arguments vector and copy pointers. */
	nargv = calloc((*argc) + 1, sizeof(char *));
	if (nargv == NULL)
		return (-1);

	nargc = 0;
	nargv[nargc++] = (*argv)[0];
	for (i = 1; i < *argc; i++)
		nargv[nargc++] = (*argv)[i + 2];

	nargv[nargc] = NULL;
	*argv = nargv;
	return (0);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: util.c,v 1.24 2017/03/01 00:56:30 gsoares Exp $ */
2
3			/*
4			* Copyright (c) 2004 Alexander Guy <alexander.guy@andern.org>
5			*
6			* Permission to use, copy, modify, and distribute this software for any
7			* purpose with or without fee is hereby granted, provided that the above
8			* copyright notice and this permission notice appear in all copies.
9			*
10			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17			*/
18
19			#include <fcntl.h>
20			#include <limits.h>
21			#include <stdio.h>
22			#include <stdlib.h>
23			#include <time.h>
24			#include <unistd.h>
25
26			#include "ntpd.h"
27
28			double
29			gettime_corrected(void)
30			{
31			return (gettime() + getoffset());
32			}
33
34			double
35			getoffset(void)
36			{
37			struct timeval tv;
38			if (adjtime(NULL, &tv) == -1)
39			return (0.0);
40			return (tv.tv_sec + 1.0e-6 * tv.tv_usec);
41			}
42
43			double
44			gettime(void)
45			{
46			struct timeval tv;
47
48			if (gettimeofday(&tv, NULL) == -1)
49			fatal("gettimeofday");
50
51			return (gettime_from_timeval(&tv));
52			}
53
54			double
55			gettime_from_timeval(struct timeval *tv)
56			{
57			/*
58			* Account for overflow on OSes that have a 32-bit time_t.
59			*/
60			return ((uint64_t)tv->tv_sec + JAN_1970 + 1.0e-6 * tv->tv_usec);
61			}
62
63			time_t
64			getmonotime(void)
65			{
66			struct timespec ts;
67
68			if (clock_gettime(CLOCK_MONOTONIC, &ts) != 0)
69			fatal("clock_gettime");
70
71			return (ts.tv_sec);
72			}
73
74
75			void
76			d_to_tv(double d, struct timeval *tv)
77			{
78			tv->tv_sec = d;
79			tv->tv_usec = (d - tv->tv_sec) * 1000000;
80			while (tv->tv_usec < 0) {
81			tv->tv_usec += 1000000;
82			tv->tv_sec -= 1;
83			}
84			}
85
86			double
87			lfp_to_d(struct l_fixedpt lfp)
88			{
89			double ret;
90
91			lfp.int_partl = ntohl(lfp.int_partl);
92			lfp.fractionl = ntohl(lfp.fractionl);
93
94			ret = (double)(lfp.int_partl) + ((double)lfp.fractionl / UINT_MAX);
95
96			return (ret);
97			}
98
99			struct l_fixedpt
100			d_to_lfp(double d)
101			{
102			struct l_fixedpt lfp;
103
104			lfp.int_partl = htonl((u_int32_t)d);
105			lfp.fractionl = htonl((u_int32_t)((d - (u_int32_t)d) * UINT_MAX));
106
107			return (lfp);
108			}
109
110			double
111			sfp_to_d(struct s_fixedpt sfp)
112			{
113			double ret;
114
115			sfp.int_parts = ntohs(sfp.int_parts);
116			sfp.fractions = ntohs(sfp.fractions);
117
118			ret = (double)(sfp.int_parts) + ((double)sfp.fractions / USHRT_MAX);
119
120			return (ret);
121			}
122
123			struct s_fixedpt
124			d_to_sfp(double d)
125			{
126			struct s_fixedpt sfp;
127
128			sfp.int_parts = htons((u_int16_t)d);
129			sfp.fractions = htons((u_int16_t)((d - (u_int16_t)d) * USHRT_MAX));
130
131			return (sfp);
132			}
133
134			char *
135			print_rtable(int r)
136			{
137			static char b[11];
138
139			b[0] = 0;
140			if (r > 0)
141			snprintf(b, sizeof(b), "rtable %d", r);
142
143			return (b);
144			}
145
146			const char *
147			log_sockaddr(struct sockaddr *sa)
148			{
149			static char buf[NI_MAXHOST];
150
151			if (getnameinfo(sa, SA_LEN(sa), buf, sizeof(buf), NULL, 0,
152			NI_NUMERICHOST))
153			return ("(unknown)");
154			else
155			return (buf);
156			}
157
158			pid_t
159			start_child(char pname, int cfd, int argc, char *argv)
160			{
161			char **nargv;
162			int nargc, i;
163			pid_t pid;
164
165			/* Prepare the child process new argv. */
166			nargv = calloc(argc + 3, sizeof(char *));
167			if (nargv == NULL)
168			fatal("%s: calloc", __func__);
169
170			/* Copy the program name first. */
171			nargc = 0;
172			nargv[nargc++] = argv[0];
173
174			/* Set the process name and copy the original args. */
175			nargv[nargc++] = "-P";
176			nargv[nargc++] = pname;
177			for (i = 1; i < argc; i++)
178			nargv[nargc++] = argv[i];
179
180			nargv[nargc] = NULL;
181
182			switch (pid = fork()) {
183			case -1:
184			fatal("%s: fork", __func__);
185			break;
186			case 0:
187			/* Prepare the parent socket and execute. */
188			if (cfd != PARENT_SOCK_FILENO) {
189			if (dup2(cfd, PARENT_SOCK_FILENO) == -1)
190			fatal("dup2");
191			} else if (fcntl(cfd, F_SETFD, 0) == -1)
192			fatal("fcntl");
193
194			execvp(argv[0], nargv);
195			fatal("%s: execvp", __func__);
196			break;
197
198			default:
199			/* Close child's socket end. */
200			close(cfd);
201			break;
202			}
203
204			free(nargv);
205			return (pid);
206			}
207
208			int
209			sanitize_argv(int argc, char **argv)
210			{
211			char **nargv;
212			int nargc;
213			int i;
214
215			/*
216			* We need at least three arguments:
217			* Example: '/usr/sbin/ntpd' '-P' 'foobar'.
218			*/
219			if (*argc < 3)
220			return (-1);
221
222			*argc -= 2;
223
224			/* Allocate new arguments vector and copy pointers. */
225			nargv = calloc((argc) + 1, sizeof(char ));
226			if (nargv == NULL)
227			return (-1);
228
229			nargc = 0;
230			nargv[nargc++] = (*argv)[0];
231			for (i = 1; i < *argc; i++)
232			nargv[nargc++] = (*argv)[i + 2];
233
234			nargv[nargc] = NULL;
235			*argv = nargv;
236			return (0);
237			}