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      1 /*	$NetBSD: t_getgrent.c,v 1.2 2011/05/11 19:06:45 njoly 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 
     32 /*
     33  * Copyright (c) 2009, Stathis Kamperis
     34  * All rights reserved.
     35  *
     36  * Redistribution and use in source and binary forms, with or without
     37  * modification, are permitted provided that the following conditions
     38  * are met:
     39  * 1. Redistributions of source code must retain the above copyright
     40  *    notice, this list of conditions and the following disclaimer.
     41  * 2. Redistributions in binary form must reproduce the above copyright
     42  *    notice, this list of conditions and the following disclaimer in the
     43  *    documentation and/or other materials provided with the distribution.
     44  *
     45  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     46  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     47  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     48  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
     49  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
     50  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
     51  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     52  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     53  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     54  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
     55  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     56  * SUCH DAMAGE.
     57  */
     58 #include <sys/cdefs.h>
     59 __RCSID("$NetBSD: t_getgrent.c,v 1.2 2011/05/11 19:06:45 njoly Exp $");
     60 
     61 #include <sys/wait.h>
     62 
     63 #include <atf-c.h>
     64 #include <grp.h>
     65 #include <stdlib.h>
     66 #include <unistd.h>
     67 
     68 ATF_TC(getgrent_loop);
     69 ATF_TC_HEAD(getgrent_loop, tc)
     70 {
     71 	atf_tc_set_md_var(tc, "descr", "Test sequential getgrent(2)");
     72 }
     73 
     74 ATF_TC_BODY(getgrent_loop, tc)
     75 {
     76 	struct group *gr;
     77 	size_t i, j;
     78 
     79 	/*
     80 	 * Loop over the group database. The first
     81 	 * call returns the first entry and subsequent
     82 	 * calls return the rest of the entries.
     83 	 */
     84 	i = j = 0;
     85 
     86 	while((gr = getgrent()) != NULL)
     87 		i++;
     88 
     89 	/*
     90 	 * Rewind the database to the beginning
     91 	 * and loop over again until the end.
     92 	 */
     93 	setgrent();
     94 
     95         while((gr = getgrent()) != NULL)
     96 		j++;
     97 
     98 	if (i != j)
     99 		atf_tc_fail("sequential getgrent(3) failed");
    100 
    101 	/*
    102 	 * Close the database and reopen it.
    103 	 * The getgrent(3) call should always
    104 	 * automatically rewind the database.
    105 	 */
    106 	endgrent();
    107 
    108         j = 0;
    109 
    110         while((gr = getgrent()) != NULL)
    111                 j++;
    112 
    113 	if (i != j)
    114 		atf_tc_fail("getgrent(3) did not rewind");
    115 }
    116 
    117 ATF_TC(getgrent_setgid);
    118 ATF_TC_HEAD(getgrent_setgid, tc)
    119 {
    120 	atf_tc_set_md_var(tc, "descr", "Test consistency of the group db");
    121 	atf_tc_set_md_var(tc, "require.user", "root");
    122 }
    123 
    124 ATF_TC_BODY(getgrent_setgid, tc)
    125 {
    126 	struct group *gr, *gr1, *gr2;
    127 	int rv, sta;
    128 	pid_t pid;
    129 
    130 	/*
    131 	 * Verify that the database is consistent.
    132 	 *
    133 	 * Note that because of the static buffers
    134 	 * used by getgrent(3), fork(2) is required,
    135 	 * even without the setgid(2) check.
    136 	 */
    137         while((gr = getgrent()) != NULL) {
    138 
    139 		pid = fork();
    140 		ATF_REQUIRE(pid >= 0);
    141 
    142 		if (pid == 0) {
    143 
    144 			gr1 = getgrgid(gr->gr_gid);
    145 
    146 			if (gr1 == NULL)
    147 				_exit(EXIT_FAILURE);
    148 
    149 			gr2 = getgrnam(gr->gr_name);
    150 
    151 			if (gr2 == NULL)
    152 				_exit(EXIT_FAILURE);
    153 
    154 			rv = setgid(gr->gr_gid);
    155 
    156 			if (rv != 0)
    157 				_exit(EXIT_FAILURE);
    158 
    159 			_exit(EXIT_SUCCESS);
    160 		}
    161 
    162 		(void)wait(&sta);
    163 
    164 		if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
    165 			goto fail;
    166 	}
    167 
    168 	return;
    169 
    170 fail:
    171 	atf_tc_fail("group database is inconsistent");
    172 }
    173 
    174 ATF_TP_ADD_TCS(tp)
    175 {
    176 
    177 	ATF_TP_ADD_TC(tp, getgrent_loop);
    178 	ATF_TP_ADD_TC(tp, getgrent_setgid);
    179 
    180 	return atf_no_error();
    181 }
    182