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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/doas/doas.c	Lines:	38	201	18.9 %
Date:	2017-11-13	Branches:	15	157	9.6 %


/* $OpenBSD: doas.c,v 1.72 2017/05/27 09:51:07 tedu Exp $ */
/*
 * Copyright (c) 2015 Ted Unangst <tedu@openbsd.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 <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>

#include <limits.h>
#include <login_cap.h>
#include <bsd_auth.h>
#include <readpassphrase.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <err.h>
#include <unistd.h>
#include <pwd.h>
#include <grp.h>
#include <syslog.h>
#include <errno.h>
#include <fcntl.h>

#include "doas.h"

static void __dead
usage(void)
{
	fprintf(stderr, "usage: doas [-Lns] [-a style] [-C config] [-u user]"
	    " command [args]\n");
	exit(1);
}

static int
parseuid(const char *s, uid_t *uid)
{
	struct passwd *pw;
	const char *errstr;

	if ((pw = getpwnam(s)) != NULL) {
		*uid = pw->pw_uid;
		return 0;
	}
	*uid = strtonum(s, 0, UID_MAX, &errstr);
	if (errstr)
		return -1;
	return 0;
}

static int
uidcheck(const char *s, uid_t desired)
{
	uid_t uid;

	if (parseuid(s, &uid) != 0)
		return -1;
	if (uid != desired)
		return -1;
	return 0;
}

static int
parsegid(const char *s, gid_t *gid)
{
	struct group *gr;
	const char *errstr;

	if ((gr = getgrnam(s)) != NULL) {
		*gid = gr->gr_gid;
		return 0;
	}
	*gid = strtonum(s, 0, GID_MAX, &errstr);
	if (errstr)
		return -1;
	return 0;
}

static int
match(uid_t uid, gid_t *groups, int ngroups, uid_t target, const char *cmd,
    const char **cmdargs, struct rule *r)
{
	int i;

	if (r->ident[0] == ':') {
		gid_t rgid;
		if (parsegid(r->ident + 1, &rgid) == -1)
			return 0;
		for (i = 0; i < ngroups; i++) {
			if (rgid == groups[i])
				break;
		}
		if (i == ngroups)
			return 0;
	} else {
		if (uidcheck(r->ident, uid) != 0)
			return 0;
	}
	if (r->target && uidcheck(r->target, target) != 0)
		return 0;
	if (r->cmd) {
		if (strcmp(r->cmd, cmd))
			return 0;
		if (r->cmdargs) {
			/* if arguments were given, they should match explicitly */
			for (i = 0; r->cmdargs[i]; i++) {
				if (!cmdargs[i])
					return 0;
				if (strcmp(r->cmdargs[i], cmdargs[i]))
					return 0;
			}
			if (cmdargs[i])
				return 0;
		}
	}
	return 1;
}

static int
permit(uid_t uid, gid_t *groups, int ngroups, const struct rule **lastr,
    uid_t target, const char *cmd, const char **cmdargs)
{
	int i;

	*lastr = NULL;
	for (i = 0; i < nrules; i++) {
		if (match(uid, groups, ngroups, target, cmd,
		    cmdargs, rules[i]))
			*lastr = rules[i];
	}
	if (!*lastr)
		return 0;
	return (*lastr)->action == PERMIT;
}

static void
parseconfig(const char *filename, int checkperms)
{
	extern FILE *yyfp;
	extern int yyparse(void);
	struct stat sb;

	yyfp = fopen(filename, "r");
	if (!yyfp)
		err(1, checkperms ? "doas is not enabled, %s" :
		    "could not open config file %s", filename);

	if (checkperms) {
		if (fstat(fileno(yyfp), &sb) != 0)
			err(1, "fstat(\"%s\")", filename);
		if ((sb.st_mode & (S_IWGRP|S_IWOTH)) != 0)
			errx(1, "%s is writable by group or other", filename);
		if (sb.st_uid != 0)
			errx(1, "%s is not owned by root", filename);
	}

	yyparse();
	fclose(yyfp);
	if (parse_errors)
		exit(1);
}

static void __dead
checkconfig(const char *confpath, int argc, char **argv,
    uid_t uid, gid_t *groups, int ngroups, uid_t target)
{
	const struct rule *rule;

	setresuid(uid, uid, uid);
	parseconfig(confpath, 0);
	if (!argc)
		exit(0);

	if (permit(uid, groups, ngroups, &rule, target, argv[0],
	    (const char **)argv + 1)) {
		printf("permit%s\n", (rule->options & NOPASS) ? " nopass" : "");
		exit(0);
	} else {
		printf("deny\n");
		exit(1);
	}
}

static void
authuser(char *myname, char *login_style, int persist)
{
	char *challenge = NULL, *response, rbuf[1024], cbuf[128];
	auth_session_t *as;
	int fd = -1;

	if (persist)
		fd = open("/dev/tty", O_RDWR);
	if (fd != -1) {
		if (ioctl(fd, TIOCCHKVERAUTH) == 0)
			goto good;
	}

	if (!(as = auth_userchallenge(myname, login_style, "auth-doas",
	    &challenge)))
		errx(1, "Authorization failed");
	if (!challenge) {
		char host[HOST_NAME_MAX + 1];
		if (gethostname(host, sizeof(host)))
			snprintf(host, sizeof(host), "?");
		snprintf(cbuf, sizeof(cbuf),
		    "\rdoas (%.32s@%.32s) password: ", myname, host);
		challenge = cbuf;
	}
	response = readpassphrase(challenge, rbuf, sizeof(rbuf),
	    RPP_REQUIRE_TTY);
	if (response == NULL && errno == ENOTTY) {
		syslog(LOG_AUTHPRIV | LOG_NOTICE,
		    "tty required for %s", myname);
		errx(1, "a tty is required");
	}
	if (!auth_userresponse(as, response, 0)) {
		syslog(LOG_AUTHPRIV | LOG_NOTICE,
		    "failed auth for %s", myname);
		errx(1, "Authorization failed");
	}
	explicit_bzero(rbuf, sizeof(rbuf));
good:
	if (fd != -1) {
		int secs = 5 * 60;
		ioctl(fd, TIOCSETVERAUTH, &secs);
		close(fd);
	}
}

int
main(int argc, char **argv)
{
	const char *safepath = "/bin:/sbin:/usr/bin:/usr/sbin:"
	    "/usr/local/bin:/usr/local/sbin";
	const char *confpath = NULL;
	char *shargv[] = { NULL, NULL };
	char *sh;
	const char *cmd;
	char cmdline[LINE_MAX];
	char myname[_PW_NAME_LEN + 1];
	struct passwd *pw;
	const struct rule *rule;
	uid_t uid;
	uid_t target = 0;
	gid_t groups[NGROUPS_MAX + 1];
	int ngroups;
	int i, ch;
	int sflag = 0;
	int nflag = 0;
	char cwdpath[PATH_MAX];
	const char *cwd;
	char *login_style = NULL;
	char **envp;

	setprogname("doas");

	closefrom(STDERR_FILENO + 1);

	uid = getuid();

	while ((ch = getopt(argc, argv, "a:C:Lnsu:")) != -1) {
		switch (ch) {
		case 'a':
			login_style = optarg;
			break;
		case 'C':
			confpath = optarg;
			break;
		case 'L':
			i = open("/dev/tty", O_RDWR);
			if (i != -1)
				ioctl(i, TIOCCLRVERAUTH);
			exit(i == -1);
		case 'u':
			if (parseuid(optarg, &target) != 0)
				errx(1, "unknown user");
			break;
		case 'n':
			nflag = 1;
			break;
		case 's':
			sflag = 1;
			break;
		default:
			usage();
			break;
		}
	}
	argv += optind;
	argc -= optind;

	if (confpath) {
		if (sflag)
			usage();
	} else if ((!sflag && !argc) || (sflag && argc))
		usage();

	pw = getpwuid(uid);
	if (!pw)
		err(1, "getpwuid failed");
	if (strlcpy(myname, pw->pw_name, sizeof(myname)) >= sizeof(myname))
		errx(1, "pw_name too long");
	ngroups = getgroups(NGROUPS_MAX, groups);
	if (ngroups == -1)
		err(1, "can't get groups");
	groups[ngroups++] = getgid();

	if (sflag) {
		sh = getenv("SHELL");
		if (sh == NULL || *sh == '\0') {
			shargv[0] = strdup(pw->pw_shell);
			if (shargv[0] == NULL)
				err(1, NULL);
		} else
			shargv[0] = sh;
		argv = shargv;
		argc = 1;
	}

	if (confpath) {
		checkconfig(confpath, argc, argv, uid, groups, ngroups,
		    target);
		exit(1);	/* fail safe */
	}

	if (geteuid())
		errx(1, "not installed setuid");

	parseconfig("/etc/doas.conf", 1);

	/* cmdline is used only for logging, no need to abort on truncate */
	(void)strlcpy(cmdline, argv[0], sizeof(cmdline));
	for (i = 1; i < argc; i++) {
		if (strlcat(cmdline, " ", sizeof(cmdline)) >= sizeof(cmdline))
			break;
		if (strlcat(cmdline, argv[i], sizeof(cmdline)) >= sizeof(cmdline))
			break;
	}

	cmd = argv[0];
	if (!permit(uid, groups, ngroups, &rule, target, cmd,
	    (const char **)argv + 1)) {
		syslog(LOG_AUTHPRIV | LOG_NOTICE,
		    "failed command for %s: %s", myname, cmdline);
		errc(1, EPERM, NULL);
	}

	if (!(rule->options & NOPASS)) {
		if (nflag)
			errx(1, "Authorization required");

		authuser(myname, login_style, rule->options & PERSIST);
	}

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

	pw = getpwuid(target);
	if (!pw)
		errx(1, "no passwd entry for target");

	if (setusercontext(NULL, pw, target, LOGIN_SETGROUP |
	    LOGIN_SETPRIORITY | LOGIN_SETRESOURCES | LOGIN_SETUMASK |
	    LOGIN_SETUSER) != 0)
		errx(1, "failed to set user context for target");

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

	if (getcwd(cwdpath, sizeof(cwdpath)) == NULL)
		cwd = "(failed)";
	else
		cwd = cwdpath;

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

	syslog(LOG_AUTHPRIV | LOG_INFO, "%s ran command %s as %s from %s",
	    myname, cmdline, pw->pw_name, cwd);

	envp = prepenv(rule);

	if (rule->cmd) {
		if (setenv("PATH", safepath, 1) == -1)
			err(1, "failed to set PATH '%s'", safepath);
	}
	execvpe(cmd, argv, envp);
	if (errno == ENOENT)
		errx(1, "%s: command not found", cmd);
	err(1, "%s", cmd);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: doas.c,v 1.72 2017/05/27 09:51:07 tedu Exp $ */
2			/*
3			* Copyright (c) 2015 Ted Unangst <tedu@openbsd.org>
4			*
5			* Permission to use, copy, modify, and distribute this software for any
6			* purpose with or without fee is hereby granted, provided that the above
7			* copyright notice and this permission notice appear in all copies.
8			*
9			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16			*/
17
18			#include <sys/types.h>
19			#include <sys/stat.h>
20			#include <sys/ioctl.h>
21
22			#include <limits.h>
23			#include <login_cap.h>
24			#include <bsd_auth.h>
25			#include <readpassphrase.h>
26			#include <string.h>
27			#include <stdio.h>
28			#include <stdlib.h>
29			#include <err.h>
30			#include <unistd.h>
31			#include <pwd.h>
32			#include <grp.h>
33			#include <syslog.h>
34			#include <errno.h>
35			#include <fcntl.h>
36
37			#include "doas.h"
38
39			static void __dead
40			usage(void)
41			{
42			fprintf(stderr, "usage: doas [-Lns] [-a style] [-C config] [-u user]"
43			" command [args]\n");
44			exit(1);
45			}
46
47			static int
48			parseuid(const char s, uid_t uid)
49			{
50			struct passwd *pw;
51			const char *errstr;
52
53			if ((pw = getpwnam(s)) != NULL) {
54			*uid = pw->pw_uid;
55			return 0;
56			}
57			*uid = strtonum(s, 0, UID_MAX, &errstr);
58			if (errstr)
59			return -1;
60			return 0;
61			}
62
63			static int
64			uidcheck(const char *s, uid_t desired)
65			{
66			uid_t uid;
67
68			if (parseuid(s, &uid) != 0)
69			return -1;
70			if (uid != desired)
71			return -1;
72			return 0;
73			}
74
75			static int
76			parsegid(const char s, gid_t gid)
77			{
78			struct group *gr;
79			const char *errstr;
80
81			if ((gr = getgrnam(s)) != NULL) {
82			*gid = gr->gr_gid;
83			return 0;
84			}
85			*gid = strtonum(s, 0, GID_MAX, &errstr);
86			if (errstr)
87			return -1;
88			return 0;
89			}
90
91			static int
92			match(uid_t uid, gid_t groups, int ngroups, uid_t target, const char cmd,
93			const char *cmdargs, struct rule r)
94			{
95			int i;
96
97			if (r->ident[0] == ':') {
98			gid_t rgid;
99			if (parsegid(r->ident + 1, &rgid) == -1)
100			return 0;
101			for (i = 0; i < ngroups; i++) {
102			if (rgid == groups[i])
103			break;
104			}
105			if (i == ngroups)
106			return 0;
107			} else {
108			if (uidcheck(r->ident, uid) != 0)
109			return 0;
110			}
111			if (r->target && uidcheck(r->target, target) != 0)
112			return 0;
113			if (r->cmd) {
114			if (strcmp(r->cmd, cmd))
115			return 0;
116			if (r->cmdargs) {
117			/* if arguments were given, they should match explicitly */
118			for (i = 0; r->cmdargs[i]; i++) {
119			if (!cmdargs[i])
120			return 0;
121			if (strcmp(r->cmdargs[i], cmdargs[i]))
122			return 0;
123			}
124			if (cmdargs[i])
125			return 0;
126			}
127			}
128			return 1;
129			}
130
131			static int
132			permit(uid_t uid, gid_t groups, int ngroups, const struct rule *lastr,
133			uid_t target, const char cmd, const char *cmdargs)
134			{
135			int i;
136
137			*lastr = NULL;
138			for (i = 0; i < nrules; i++) {
139			if (match(uid, groups, ngroups, target, cmd,
140			cmdargs, rules[i]))
141			*lastr = rules[i];
142			}
143			if (!*lastr)
144			return 0;
145			return (*lastr)->action == PERMIT;
146			}
147
148			static void
149			parseconfig(const char *filename, int checkperms)
150			{
151			extern FILE *yyfp;
152			extern int yyparse(void);
153		20	struct stat sb;
154
155		10	yyfp = fopen(filename, "r");
156	✗✓	10	if (!yyfp)
157			err(1, checkperms ? "doas is not enabled, %s" :
158			"could not open config file %s", filename);
159
160	✗✓	10	if (checkperms) {
161			if (fstat(fileno(yyfp), &sb) != 0)
162			err(1, "fstat(\"%s\")", filename);
163			if ((sb.st_mode & (S_IWGRP\|S_IWOTH)) != 0)
164			errx(1, "%s is writable by group or other", filename);
165			if (sb.st_uid != 0)
166			errx(1, "%s is not owned by root", filename);
167			}
168
169		10	yyparse();
170		10	fclose(yyfp);
171	✓✓	10	if (parse_errors)
172			exit(1);
173		5	}
174
175			static void __dead
176			checkconfig(const char confpath, int argc, char *argv,
177			uid_t uid, gid_t *groups, int ngroups, uid_t target)
178			{
179		15	const struct rule *rule;
180
181		5	setresuid(uid, uid, uid);
182		5	parseconfig(confpath, 0);
183	✓✗	5	if (!argc)
184			exit(0);
185
186			if (permit(uid, groups, ngroups, &rule, target, argv[0],
187			(const char **)argv + 1)) {
188			printf("permit%s\n", (rule->options & NOPASS) ? " nopass" : "");
189			exit(0);
190			} else {
191			printf("deny\n");
192			exit(1);
193			}
194			}
195
196			static void
197			authuser(char myname, char login_style, int persist)
198			{
199			char challenge = NULL, response, rbuf[1024], cbuf[128];
200			auth_session_t *as;
201			int fd = -1;
202
203			if (persist)
204			fd = open("/dev/tty", O_RDWR);
205			if (fd != -1) {
206			if (ioctl(fd, TIOCCHKVERAUTH) == 0)
207			goto good;
208			}
209
210			if (!(as = auth_userchallenge(myname, login_style, "auth-doas",
211			&challenge)))
212			errx(1, "Authorization failed");
213			if (!challenge) {
214			char host[HOST_NAME_MAX + 1];
215			if (gethostname(host, sizeof(host)))
216			snprintf(host, sizeof(host), "?");
217			snprintf(cbuf, sizeof(cbuf),
218			"\rdoas (%.32s@%.32s) password: ", myname, host);
219			challenge = cbuf;
220			}
221			response = readpassphrase(challenge, rbuf, sizeof(rbuf),
222			RPP_REQUIRE_TTY);
223			if (response == NULL && errno == ENOTTY) {
224			syslog(LOG_AUTHPRIV \| LOG_NOTICE,
225			"tty required for %s", myname);
226			errx(1, "a tty is required");
227			}
228			if (!auth_userresponse(as, response, 0)) {
229			syslog(LOG_AUTHPRIV \| LOG_NOTICE,
230			"failed auth for %s", myname);
231			errx(1, "Authorization failed");
232			}
233			explicit_bzero(rbuf, sizeof(rbuf));
234			good:
235			if (fd != -1) {
236			int secs = 5 * 60;
237			ioctl(fd, TIOCSETVERAUTH, &secs);
238			close(fd);
239			}
240			}
241
242			int
243			main(int argc, char **argv)
244			{
245			const char *safepath = "/bin:/sbin:/usr/bin:/usr/sbin:"
246			"/usr/local/bin:/usr/local/sbin";
247			const char *confpath = NULL;
248		20	char *shargv[] = { NULL, NULL };
249			char *sh;
250			const char *cmd;
251		10	char cmdline[LINE_MAX];
252		10	char myname[_PW_NAME_LEN + 1];
253			struct passwd *pw;
254		10	const struct rule *rule;
255			uid_t uid;
256		10	uid_t target = 0;
257		10	gid_t groups[NGROUPS_MAX + 1];
258			int ngroups;
259			int i, ch;
260			int sflag = 0;
261			int nflag = 0;
262		10	char cwdpath[PATH_MAX];
263			const char *cwd;
264			char *login_style = NULL;
265			char **envp;
266
267		10	setprogname("doas");
268
269		10	closefrom(STDERR_FILENO + 1);
270
271		10	uid = getuid();
272
273	✓✓	40	while ((ch = getopt(argc, argv, "a:C:Lnsu:")) != -1) {
274	✗✓✗✗ ✗✗✗	10	switch (ch) {
275			case 'a':
276			login_style = optarg;
277			break;
278			case 'C':
279		10	confpath = optarg;
280		10	break;
281			case 'L':
282			i = open("/dev/tty", O_RDWR);
283			if (i != -1)
284			ioctl(i, TIOCCLRVERAUTH);
285			exit(i == -1);
286			case 'u':
287			if (parseuid(optarg, &target) != 0)
288			errx(1, "unknown user");
289			break;
290			case 'n':
291			nflag = 1;
292			break;
293			case 's':
294			sflag = 1;
295			break;
296			default:
297			usage();
298			break;
299			}
300			}
301		10	argv += optind;
302		10	argc -= optind;
303
304	✓✗	10	if (confpath) {
305	✗✓	10	if (sflag)
306			usage();
307			} else if ((!sflag && !argc) \|\| (sflag && argc))
308			usage();
309
310		10	pw = getpwuid(uid);
311	✗✓	10	if (!pw)
312			err(1, "getpwuid failed");
313	✗✓	10	if (strlcpy(myname, pw->pw_name, sizeof(myname)) >= sizeof(myname))
314			errx(1, "pw_name too long");
315		10	ngroups = getgroups(NGROUPS_MAX, groups);
316	✗✓	10	if (ngroups == -1)
317			err(1, "can't get groups");
318		10	groups[ngroups++] = getgid();
319
320	✗✓	10	if (sflag) {
321			sh = getenv("SHELL");
322			if (sh == NULL \|\| *sh == '\0') {
323			shargv[0] = strdup(pw->pw_shell);
324			if (shargv[0] == NULL)
325			err(1, NULL);
326			} else
327			shargv[0] = sh;
328			argv = shargv;
329			argc = 1;
330			}
331
332	✓✗	10	if (confpath) {
333			checkconfig(confpath, argc, argv, uid, groups, ngroups,
334			target);
335			exit(1); /* fail safe */
336			}
337
338			if (geteuid())
339			errx(1, "not installed setuid");
340
341			parseconfig("/etc/doas.conf", 1);
342
343			/* cmdline is used only for logging, no need to abort on truncate */
344			(void)strlcpy(cmdline, argv[0], sizeof(cmdline));
345			for (i = 1; i < argc; i++) {
346			if (strlcat(cmdline, " ", sizeof(cmdline)) >= sizeof(cmdline))
347			break;
348			if (strlcat(cmdline, argv[i], sizeof(cmdline)) >= sizeof(cmdline))
349			break;
350			}
351
352			cmd = argv[0];
353			if (!permit(uid, groups, ngroups, &rule, target, cmd,
354			(const char **)argv + 1)) {
355			syslog(LOG_AUTHPRIV \| LOG_NOTICE,
356			"failed command for %s: %s", myname, cmdline);
357			errc(1, EPERM, NULL);
358			}
359
360			if (!(rule->options & NOPASS)) {
361			if (nflag)
362			errx(1, "Authorization required");
363
364			authuser(myname, login_style, rule->options & PERSIST);
365			}
366
367			if (pledge("stdio rpath getpw exec id flock cpath wpath", NULL) == -1)
368			err(1, "pledge");
369
370			pw = getpwuid(target);
371			if (!pw)
372			errx(1, "no passwd entry for target");
373
374			if (setusercontext(NULL, pw, target, LOGIN_SETGROUP \|
375			LOGIN_SETPRIORITY \| LOGIN_SETRESOURCES \| LOGIN_SETUMASK \|
376			LOGIN_SETUSER) != 0)
377			errx(1, "failed to set user context for target");
378
379			if (pledge("stdio rpath exec flock cpath wpath", NULL) == -1)
380			err(1, "pledge");
381
382			if (getcwd(cwdpath, sizeof(cwdpath)) == NULL)
383			cwd = "(failed)";
384			else
385			cwd = cwdpath;
386
387			if (pledge("stdio exec flock rpath cpath wpath", NULL) == -1)
388			err(1, "pledge");
389
390			syslog(LOG_AUTHPRIV \| LOG_INFO, "%s ran command %s as %s from %s",
391			myname, cmdline, pw->pw_name, cwd);
392
393			envp = prepenv(rule);
394
395			if (rule->cmd) {
396			if (setenv("PATH", safepath, 1) == -1)
397			err(1, "failed to set PATH '%s'", safepath);
398			}
399			execvpe(cmd, argv, envp);
400			if (errno == ENOENT)
401			errx(1, "%s: command not found", cmd);
402			err(1, "%s", cmd);
403			}