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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/which/which.c	Lines:	0	59	0.0 %
Date:	2016-12-06	Branches:	0	56	0.0 %


/*	$OpenBSD: which.c,v 1.25 2016/01/14 22:02:13 millert Exp $	*/

/*
 * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
 *
 * 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 <sys/stat.h>
#include <sys/sysctl.h>

#include <err.h>
#include <errno.h>
#include <locale.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>

#define PROG_WHICH	1
#define PROG_WHEREIS	2

extern char *__progname;

int findprog(char *, char *, int, int);
__dead void usage(void);

/*
 * which(1) -- find an executable(s) in the user's path
 * whereis(1) -- find an executable(s) in the default user path
 *
 * Return values:
 *	0 - all executables found
 *	1 - some found, some not
 *	2 - none found
 */

int
main(int argc, char *argv[])
{
	char *path;
	size_t n;
	int ch, allmatches = 0, notfound = 0, progmode = PROG_WHICH;

	(void)setlocale(LC_ALL, "");

	while ((ch = getopt(argc, argv, "a")) != -1)
		switch (ch) {
		case 'a':
			allmatches = 1;
			break;
		default:
			usage();
		}
	argc -= optind;
	argv += optind;

	if (argc == 0)
		usage();

	if (strcmp(__progname, "whereis") == 0) {
		progmode = PROG_WHEREIS;
		path = _PATH_STDPATH;
	} else {
		if ((path = getenv("PATH")) == NULL || *path == '\0')
			path = _PATH_DEFPATH;
	}

	/* To make access(2) do what we want */
	if (setgid(getegid()))
		err(1, "Can't set gid to %u", getegid());
	if (setuid(geteuid()))
		err(1, "Can't set uid to %u", geteuid());

	if (pledge("stdio rpath wpath cpath", NULL) == -1)
		err(2, "pledge");

	for (n = 0; n < argc; n++)
		if (findprog(argv[n], path, progmode, allmatches) == 0)
			notfound++;

	exit((notfound == 0) ? 0 : ((notfound == argc) ? 2 : 1));
}

int
findprog(char *prog, char *path, int progmode, int allmatches)
{
	char *p, filename[PATH_MAX];
	int len, rval = 0;
	struct stat sbuf;
	char *pathcpy;

	/* Special case if prog contains '/' */
	if (strchr(prog, '/')) {
		if ((stat(prog, &sbuf) == 0) && S_ISREG(sbuf.st_mode) &&
		    access(prog, X_OK) == 0) {
			(void)puts(prog);
			return (1);
		} else {
			warnx("%s: Command not found.", prog);
			return (0);
		}
	}

	if ((path = strdup(path)) == NULL)
		err(1, "strdup");
	pathcpy = path;

	while ((p = strsep(&pathcpy, ":")) != NULL) {
		if (*p == '\0')
			p = ".";

		len = strlen(p);
		while (len > 0 && p[len-1] == '/')
			p[--len] = '\0';	/* strip trailing '/' */

		len = snprintf(filename, sizeof(filename), "%s/%s", p, prog);
		if (len < 0 || len >= sizeof(filename)) {
			warnc(ENAMETOOLONG, "%s/%s", p, prog);
			free(path);
			return (0);
		}
		if ((stat(filename, &sbuf) == 0) && S_ISREG(sbuf.st_mode) &&
		    access(filename, X_OK) == 0) {
			(void)puts(filename);
			rval = 1;
			if (!allmatches) {
				free(path);
				return (rval);
			}
		}
	}
	(void)free(path);

	/* whereis(1) is silent on failure. */
	if (!rval && progmode != PROG_WHEREIS)
		warnx("%s: Command not found.", prog);
	return (rval);
}

__dead void
usage(void)
{
	(void)fprintf(stderr, "usage: %s [-a] name ...\n", __progname);
	exit(1);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: which.c,v 1.25 2016/01/14 22:02:13 millert Exp $ */
2
3			/*
4			* Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
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 <sys/stat.h>
20			#include <sys/sysctl.h>
21
22			#include <err.h>
23			#include <errno.h>
24			#include <locale.h>
25			#include <paths.h>
26			#include <stdio.h>
27			#include <stdlib.h>
28			#include <string.h>
29			#include <unistd.h>
30			#include <limits.h>
31
32			#define PROG_WHICH 1
33			#define PROG_WHEREIS 2
34
35			extern char *__progname;
36
37			int findprog(char , char , int, int);
38			__dead void usage(void);
39
40			/*
41			* which(1) -- find an executable(s) in the user's path
42			* whereis(1) -- find an executable(s) in the default user path
43			*
44			* Return values:
45			* 0 - all executables found
46			* 1 - some found, some not
47			* 2 - none found
48			*/
49
50			int
51			main(int argc, char *argv[])
52			{
53			char *path;
54			size_t n;
55			int ch, allmatches = 0, notfound = 0, progmode = PROG_WHICH;
56
57			(void)setlocale(LC_ALL, "");
58
59			while ((ch = getopt(argc, argv, "a")) != -1)
60			switch (ch) {
61			case 'a':
62			allmatches = 1;
63			break;
64			default:
65			usage();
66			}
67			argc -= optind;
68			argv += optind;
69
70			if (argc == 0)
71			usage();
72
73			if (strcmp(__progname, "whereis") == 0) {
74			progmode = PROG_WHEREIS;
75			path = _PATH_STDPATH;
76			} else {
77			if ((path = getenv("PATH")) == NULL \|\| *path == '\0')
78			path = _PATH_DEFPATH;
79			}
80
81			/* To make access(2) do what we want */
82			if (setgid(getegid()))
83			err(1, "Can't set gid to %u", getegid());
84			if (setuid(geteuid()))
85			err(1, "Can't set uid to %u", geteuid());
86
87			if (pledge("stdio rpath wpath cpath", NULL) == -1)
88			err(2, "pledge");
89
90			for (n = 0; n < argc; n++)
91			if (findprog(argv[n], path, progmode, allmatches) == 0)
92			notfound++;
93
94			exit((notfound == 0) ? 0 : ((notfound == argc) ? 2 : 1));
95			}
96
97			int
98			findprog(char prog, char path, int progmode, int allmatches)
99			{
100			char *p, filename[PATH_MAX];
101			int len, rval = 0;
102			struct stat sbuf;
103			char *pathcpy;
104
105			/* Special case if prog contains '/' */
106			if (strchr(prog, '/')) {
107			if ((stat(prog, &sbuf) == 0) && S_ISREG(sbuf.st_mode) &&
108			access(prog, X_OK) == 0) {
109			(void)puts(prog);
110			return (1);
111			} else {
112			warnx("%s: Command not found.", prog);
113			return (0);
114			}
115			}
116
117			if ((path = strdup(path)) == NULL)
118			err(1, "strdup");
119			pathcpy = path;
120
121			while ((p = strsep(&pathcpy, ":")) != NULL) {
122			if (*p == '\0')
123			p = ".";
124
125			len = strlen(p);
126			while (len > 0 && p[len-1] == '/')
127			p[--len] = '\0'; /* strip trailing '/' */
128
129			len = snprintf(filename, sizeof(filename), "%s/%s", p, prog);
130			if (len < 0 \|\| len >= sizeof(filename)) {
131			warnc(ENAMETOOLONG, "%s/%s", p, prog);
132			free(path);
133			return (0);
134			}
135			if ((stat(filename, &sbuf) == 0) && S_ISREG(sbuf.st_mode) &&
136			access(filename, X_OK) == 0) {
137			(void)puts(filename);
138			rval = 1;
139			if (!allmatches) {
140			free(path);
141			return (rval);
142			}
143			}
144			}
145			(void)free(path);
146
147			/* whereis(1) is silent on failure. */
148			if (!rval && progmode != PROG_WHEREIS)
149			warnx("%s: Command not found.", prog);
150			return (rval);
151			}
152
153			__dead void
154			usage(void)
155			{
156			(void)fprintf(stderr, "usage: %s [-a] name ...\n", __progname);
157			exit(1);
158			}