1/* $NetBSD: t_getlogin.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $ */
2
3/*-
4 * Copyright (c) 2011 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jukka Ruohonen.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31#include <sys/cdefs.h>
32__RCSID("$NetBSD: t_getlogin.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $");
33
34#include <sys/param.h>
35#include <sys/wait.h>
36
37#include <atf-c.h>
38#include <errno.h>
39#include <stdlib.h>
40#include <string.h>
41#include <unistd.h>
42
43ATF_TC(getlogin_r_err);
44ATF_TC_HEAD(getlogin_r_err, tc)
45{
46	atf_tc_set_md_var(tc, "descr", "Test errors from getlogin_r(2)");
47}
48
49ATF_TC_BODY(getlogin_r_err, tc)
50{
51	char small[0];
52
53	ATF_REQUIRE(getlogin_r(small, sizeof(small)) == ERANGE);
54}
55
56ATF_TC(getlogin_same);
57ATF_TC_HEAD(getlogin_same, tc)
58{
59	atf_tc_set_md_var(tc, "descr", "getlogin(2) vs. getlogin_r(2)");
60}
61
62ATF_TC_BODY(getlogin_same, tc)
63{
64	char buf[MAXLOGNAME];
65	char *str;
66
67	str = getlogin();
68
69	if (str == NULL)
70		return;
71
72	ATF_REQUIRE(getlogin_r(buf, sizeof(buf)) == 0);
73
74	if (strcmp(str, buf) != 0)
75		atf_tc_fail("getlogin(2) and getlogin_r(2) differ");
76}
77
78ATF_TC(setlogin_basic);
79ATF_TC_HEAD(setlogin_basic, tc)
80{
81	atf_tc_set_md_var(tc, "descr", "Test that setlogin(2) works");
82	atf_tc_set_md_var(tc, "require.user", "root");
83}
84
85ATF_TC_BODY(setlogin_basic, tc)
86{
87	char *name;
88	pid_t pid;
89	int sta;
90
91	pid = fork();
92	ATF_REQUIRE(pid >= 0);
93
94	if (pid == 0) {
95
96		(void)setsid();
97
98		if (setlogin("foobar") != 0)
99			_exit(EXIT_FAILURE);
100
101		name = getlogin();
102
103		if (name == NULL)
104			_exit(EXIT_FAILURE);
105
106		if (strcmp(name, "foobar") != 0)
107			_exit(EXIT_FAILURE);
108
109		_exit(EXIT_SUCCESS);
110	}
111
112	(void)wait(&sta);
113
114	if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
115		atf_tc_fail("setlogin(2) failed to set login name");
116}
117
118ATF_TC(setlogin_err);
119ATF_TC_HEAD(setlogin_err, tc)
120{
121	atf_tc_set_md_var(tc, "descr", "Test errors from setlogin(2)");
122	atf_tc_set_md_var(tc, "require.user", "root");
123}
124
125ATF_TC_BODY(setlogin_err, tc)
126{
127	char buf[MAXLOGNAME + 1];
128	char *name;
129	pid_t pid;
130	int sta;
131
132	pid = fork();
133	ATF_REQUIRE(pid >= 0);
134
135	(void)memset(buf, 'x', sizeof(buf));
136
137	if (pid == 0) {
138
139		(void)setsid();
140
141		errno = 0;
142
143		if (setlogin(buf) != -1)
144			_exit(EINVAL);
145
146		if (errno != EINVAL)
147			_exit(EINVAL);
148
149		errno = 0;
150
151		if (setlogin((void *)-1) != -1)
152			_exit(EFAULT);
153
154		if (errno != EFAULT)
155			_exit(EFAULT);
156
157		name = getlogin();
158
159		if (name == NULL)
160			_exit(EXIT_FAILURE);
161
162		if (strcmp(name, "foobar") == 0)
163			_exit(EXIT_FAILURE);
164
165		_exit(EXIT_SUCCESS);
166	}
167
168	(void)wait(&sta);
169
170	if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS) {
171
172		if (WEXITSTATUS(sta) == EFAULT)
173			atf_tc_fail("expected EFAULT, but the call succeeded");
174
175		if (WEXITSTATUS(sta) == EINVAL)
176			atf_tc_fail("expected EINVAL, but the call succeeded");
177
178		atf_tc_fail("setlogin(2) failed, but login name was set");
179	}
180}
181
182ATF_TC(setlogin_perm);
183ATF_TC_HEAD(setlogin_perm, tc)
184{
185	atf_tc_set_md_var(tc, "descr", "Test setlogin(2) as normal user");
186	atf_tc_set_md_var(tc, "require.user", "unprivileged");
187}
188
189ATF_TC_BODY(setlogin_perm, tc)
190{
191	char *name;
192	pid_t pid;
193	int sta;
194
195	pid = fork();
196	ATF_REQUIRE(pid >= 0);
197
198	if (pid == 0) {
199
200		(void)setsid();
201
202		errno = 0;
203
204		if (setlogin("foobar") != -1)
205			_exit(EXIT_FAILURE);
206
207		if (errno != EPERM)
208			_exit(EXIT_FAILURE);
209
210		name = getlogin();
211
212		if (name == NULL)
213			_exit(EXIT_FAILURE);
214
215		if (strcmp(name, "foobar") == 0)
216			_exit(EXIT_FAILURE);
217
218		_exit(EXIT_SUCCESS);
219	}
220
221	(void)wait(&sta);
222
223	if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
224		atf_tc_fail("login name was set as an unprivileged user");
225}
226
227ATF_TP_ADD_TCS(tp)
228{
229
230	ATF_TP_ADD_TC(tp, getlogin_r_err);
231	ATF_TP_ADD_TC(tp, getlogin_same);
232	ATF_TP_ADD_TC(tp, setlogin_basic);
233	ATF_TP_ADD_TC(tp, setlogin_err);
234	ATF_TP_ADD_TC(tp, setlogin_perm);
235
236	return atf_no_error();
237}
238