xref: /freebsd-src/contrib/netbsd-tests/lib/libc/sys/t_issetugid.c (revision 9268022b74279434ed6300244e3f977e56a8ceb5)
1*57718be8SEnji Cooper /* $NetBSD: t_issetugid.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $ */
2*57718be8SEnji Cooper 
3*57718be8SEnji Cooper /*-
4*57718be8SEnji Cooper  * Copyright (c) 2011 The NetBSD Foundation, Inc.
5*57718be8SEnji Cooper  * All rights reserved.
6*57718be8SEnji Cooper  *
7*57718be8SEnji Cooper  * This code is derived from software contributed to The NetBSD Foundation
8*57718be8SEnji Cooper  * by Jukka Ruohonen.
9*57718be8SEnji Cooper  *
10*57718be8SEnji Cooper  * Redistribution and use in source and binary forms, with or without
11*57718be8SEnji Cooper  * modification, are permitted provided that the following conditions
12*57718be8SEnji Cooper  * are met:
13*57718be8SEnji Cooper  * 1. Redistributions of source code must retain the above copyright
14*57718be8SEnji Cooper  *    notice, this list of conditions and the following disclaimer.
15*57718be8SEnji Cooper  * 2. Redistributions in binary form must reproduce the above copyright
16*57718be8SEnji Cooper  *    notice, this list of conditions and the following disclaimer in the
17*57718be8SEnji Cooper  *    documentation and/or other materials provided with the distribution.
18*57718be8SEnji Cooper  *
19*57718be8SEnji Cooper  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20*57718be8SEnji Cooper  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21*57718be8SEnji Cooper  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22*57718be8SEnji Cooper  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23*57718be8SEnji Cooper  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24*57718be8SEnji Cooper  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25*57718be8SEnji Cooper  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26*57718be8SEnji Cooper  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27*57718be8SEnji Cooper  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28*57718be8SEnji Cooper  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29*57718be8SEnji Cooper  * POSSIBILITY OF SUCH DAMAGE.
30*57718be8SEnji Cooper  */
31*57718be8SEnji Cooper #include <sys/cdefs.h>
32*57718be8SEnji Cooper __RCSID("$NetBSD: t_issetugid.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $");
33*57718be8SEnji Cooper 
34*57718be8SEnji Cooper #include <sys/wait.h>
35*57718be8SEnji Cooper 
36*57718be8SEnji Cooper #include <atf-c.h>
37*57718be8SEnji Cooper #include <errno.h>
38*57718be8SEnji Cooper #include <pwd.h>
39*57718be8SEnji Cooper #include <stdlib.h>
40*57718be8SEnji Cooper #include <unistd.h>
41*57718be8SEnji Cooper 
42*57718be8SEnji Cooper static bool check(int (*fuid)(uid_t), int (*fgid)(gid_t));
43*57718be8SEnji Cooper 
44*57718be8SEnji Cooper static bool
check(int (* fuid)(uid_t),int (* fgid)(gid_t))45*57718be8SEnji Cooper check(int (*fuid)(uid_t), int (*fgid)(gid_t))
46*57718be8SEnji Cooper {
47*57718be8SEnji Cooper 	struct passwd *pw;
48*57718be8SEnji Cooper 	pid_t pid;
49*57718be8SEnji Cooper 	int sta;
50*57718be8SEnji Cooper 
51*57718be8SEnji Cooper 	pw = getpwnam("nobody");
52*57718be8SEnji Cooper 
53*57718be8SEnji Cooper 	if (pw == NULL)
54*57718be8SEnji Cooper 		return false;
55*57718be8SEnji Cooper 
56*57718be8SEnji Cooper 	pid = fork();
57*57718be8SEnji Cooper 
58*57718be8SEnji Cooper 	if (pid < 0)
59*57718be8SEnji Cooper 		return false;
60*57718be8SEnji Cooper 
61*57718be8SEnji Cooper 	if (pid == 0) {
62*57718be8SEnji Cooper 
63*57718be8SEnji Cooper 		if (fuid != NULL && (*fuid)(pw->pw_uid) != 0)
64*57718be8SEnji Cooper 			_exit(EXIT_FAILURE);
65*57718be8SEnji Cooper 
66*57718be8SEnji Cooper 		if (fgid != NULL && (*fgid)(pw->pw_gid) != 0)
67*57718be8SEnji Cooper 			_exit(EXIT_FAILURE);
68*57718be8SEnji Cooper 
69*57718be8SEnji Cooper 		if (issetugid() != 1)
70*57718be8SEnji Cooper 			_exit(EXIT_FAILURE);
71*57718be8SEnji Cooper 
72*57718be8SEnji Cooper 		_exit(EXIT_SUCCESS);
73*57718be8SEnji Cooper 	}
74*57718be8SEnji Cooper 
75*57718be8SEnji Cooper 	(void)wait(&sta);
76*57718be8SEnji Cooper 
77*57718be8SEnji Cooper 	if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
78*57718be8SEnji Cooper 		return false;
79*57718be8SEnji Cooper 
80*57718be8SEnji Cooper 	return true;
81*57718be8SEnji Cooper }
82*57718be8SEnji Cooper 
83*57718be8SEnji Cooper ATF_TC(issetugid_egid);
ATF_TC_HEAD(issetugid_egid,tc)84*57718be8SEnji Cooper ATF_TC_HEAD(issetugid_egid, tc)
85*57718be8SEnji Cooper {
86*57718be8SEnji Cooper 	atf_tc_set_md_var(tc, "descr", "A test of issetugid(2), eff. GID");
87*57718be8SEnji Cooper 	atf_tc_set_md_var(tc, "require.user", "root");
88*57718be8SEnji Cooper }
89*57718be8SEnji Cooper 
ATF_TC_BODY(issetugid_egid,tc)90*57718be8SEnji Cooper ATF_TC_BODY(issetugid_egid, tc)
91*57718be8SEnji Cooper {
92*57718be8SEnji Cooper 
93*57718be8SEnji Cooper 	if (check(NULL, setegid) != true)
94*57718be8SEnji Cooper 		atf_tc_fail("issetugid(2) failed with effective GID");
95*57718be8SEnji Cooper }
96*57718be8SEnji Cooper 
97*57718be8SEnji Cooper ATF_TC(issetugid_euid);
ATF_TC_HEAD(issetugid_euid,tc)98*57718be8SEnji Cooper ATF_TC_HEAD(issetugid_euid, tc)
99*57718be8SEnji Cooper {
100*57718be8SEnji Cooper 	atf_tc_set_md_var(tc, "descr", "A test of issetugid(2), eff. UID");
101*57718be8SEnji Cooper 	atf_tc_set_md_var(tc, "require.user", "root");
102*57718be8SEnji Cooper }
103*57718be8SEnji Cooper 
ATF_TC_BODY(issetugid_euid,tc)104*57718be8SEnji Cooper ATF_TC_BODY(issetugid_euid, tc)
105*57718be8SEnji Cooper {
106*57718be8SEnji Cooper 
107*57718be8SEnji Cooper 	if (check(seteuid, NULL) != true)
108*57718be8SEnji Cooper 		atf_tc_fail("issetugid(2) failed with effective UID");
109*57718be8SEnji Cooper }
110*57718be8SEnji Cooper 
111*57718be8SEnji Cooper ATF_TC(issetugid_rgid);
ATF_TC_HEAD(issetugid_rgid,tc)112*57718be8SEnji Cooper ATF_TC_HEAD(issetugid_rgid, tc)
113*57718be8SEnji Cooper {
114*57718be8SEnji Cooper 	atf_tc_set_md_var(tc, "descr", "A test of issetugid(2), real GID");
115*57718be8SEnji Cooper 	atf_tc_set_md_var(tc, "require.user", "root");
116*57718be8SEnji Cooper }
117*57718be8SEnji Cooper 
ATF_TC_BODY(issetugid_rgid,tc)118*57718be8SEnji Cooper ATF_TC_BODY(issetugid_rgid, tc)
119*57718be8SEnji Cooper {
120*57718be8SEnji Cooper 
121*57718be8SEnji Cooper 	if (check(NULL, setgid) != true)
122*57718be8SEnji Cooper 		atf_tc_fail("issetugid(2) failed with real GID");
123*57718be8SEnji Cooper }
124*57718be8SEnji Cooper 
125*57718be8SEnji Cooper ATF_TC(issetugid_ruid);
ATF_TC_HEAD(issetugid_ruid,tc)126*57718be8SEnji Cooper ATF_TC_HEAD(issetugid_ruid, tc)
127*57718be8SEnji Cooper {
128*57718be8SEnji Cooper 	atf_tc_set_md_var(tc, "descr", "A test of issetugid(2), real UID");
129*57718be8SEnji Cooper 	atf_tc_set_md_var(tc, "require.user", "root");
130*57718be8SEnji Cooper }
131*57718be8SEnji Cooper 
ATF_TC_BODY(issetugid_ruid,tc)132*57718be8SEnji Cooper ATF_TC_BODY(issetugid_ruid, tc)
133*57718be8SEnji Cooper {
134*57718be8SEnji Cooper 
135*57718be8SEnji Cooper 	if (check(setuid, NULL) != true)
136*57718be8SEnji Cooper 		atf_tc_fail("issetugid(2) failed with real UID");
137*57718be8SEnji Cooper }
138*57718be8SEnji Cooper 
ATF_TP_ADD_TCS(tp)139*57718be8SEnji Cooper ATF_TP_ADD_TCS(tp)
140*57718be8SEnji Cooper {
141*57718be8SEnji Cooper 
142*57718be8SEnji Cooper 	ATF_TP_ADD_TC(tp, issetugid_egid);
143*57718be8SEnji Cooper 	ATF_TP_ADD_TC(tp, issetugid_euid);
144*57718be8SEnji Cooper 	ATF_TP_ADD_TC(tp, issetugid_rgid);
145*57718be8SEnji Cooper 	ATF_TP_ADD_TC(tp, issetugid_ruid);
146*57718be8SEnji Cooper 
147*57718be8SEnji Cooper 	return atf_no_error();
148*57718be8SEnji Cooper }
149