123 lines
3.1 KiB
C
123 lines
3.1 KiB
C
/* $NetBSD: t_setuid.c,v 1.1 2011/07/07 06:57:54 jruoho Exp $ */
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/*-
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* Copyright (c) 2011 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jukka Ruohonen.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__RCSID("$NetBSD: t_setuid.c,v 1.1 2011/07/07 06:57:54 jruoho Exp $");
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#include <sys/wait.h>
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#include <atf-c.h>
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#include <errno.h>
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#include <pwd.h>
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#include <stdlib.h>
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#include <unistd.h>
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ATF_TC(setuid_perm);
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ATF_TC_HEAD(setuid_perm, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test setuid(0) as normal user");
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atf_tc_set_md_var(tc, "require.user", "unprivileged");
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}
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ATF_TC_BODY(setuid_perm, tc)
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{
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errno = 0;
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ATF_REQUIRE(setuid(0) == -1);
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ATF_REQUIRE(errno == EPERM);
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}
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ATF_TC(setuid_real);
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ATF_TC_HEAD(setuid_real, tc)
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{
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atf_tc_set_md_var(tc, "descr", "Test setuid(2) with real UID");
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}
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ATF_TC_BODY(setuid_real, tc)
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{
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uid_t uid = getuid();
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ATF_REQUIRE(setuid(uid) == 0);
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ATF_REQUIRE(getuid() == uid);
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ATF_REQUIRE(geteuid() == uid);
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}
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ATF_TC(setuid_root);
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ATF_TC_HEAD(setuid_root, tc)
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{
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atf_tc_set_md_var(tc, "descr", "A basic test of setuid(2)");
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atf_tc_set_md_var(tc, "require.user", "root");
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}
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ATF_TC_BODY(setuid_root, tc)
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{
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struct passwd *pw;
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int rv, sta;
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pid_t pid;
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uid_t uid;
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while ((pw = getpwent()) != NULL) {
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pid = fork();
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ATF_REQUIRE(pid >= 0);
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if (pid == 0) {
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rv = setuid(pw->pw_uid);
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if (rv != 0)
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_exit(EXIT_FAILURE);
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uid = getuid();
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if (uid != pw->pw_uid)
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_exit(EXIT_FAILURE);
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_exit(EXIT_SUCCESS);
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}
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(void)wait(&sta);
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if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
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atf_tc_fail("failed to change UID to %u", pw->pw_uid);
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}
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, setuid_perm);
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ATF_TP_ADD_TC(tp, setuid_real);
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ATF_TP_ADD_TC(tp, setuid_root);
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return atf_no_error();
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}
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