1 /* $NetBSD: t_setdomainname.c,v 1.2 2012/03/25 08:17:54 joerg 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_setdomainname.c,v 1.2 2012/03/25 08:17:54 joerg Exp $"); 33 34 #include <sys/param.h> 35 36 #include <atf-c.h> 37 #include <err.h> 38 #include <errno.h> 39 #include <fcntl.h> 40 #include <string.h> 41 #include <unistd.h> 42 43 #define DOMAIN_BACKUP_FILE "domain.bak" 44 45 static const char domains[][MAXHOSTNAMELEN] = { 46 "1234567890", 47 "abcdefghijklmnopqrst", 48 "!#\xa4%&/(..xasS812=!=!(I(!;X;;X.as.dasa=?;,..<>|**^\xa8", 49 "--------------------------------------------------------------------" 50 }; 51 52 static void 53 backup_domain(void) 54 { 55 char domain[MAXHOSTNAMELEN]; 56 int fd; 57 size_t l; 58 ssize_t r,n = 0; 59 60 memset(domain, 0, sizeof(domain)); 61 62 ATF_REQUIRE_EQ(0, getdomainname(domain, sizeof(domain))); 63 l = strnlen(domain, MAXHOSTNAMELEN); 64 fd = open(DOMAIN_BACKUP_FILE, O_WRONLY | O_CREAT | O_EXCL, 0644); 65 ATF_REQUIRE(fd >= 0); 66 while ((r = write(fd, domain + n, l - n)) > 0) 67 n += r; 68 ATF_REQUIRE_EQ(0, r); 69 close(fd); 70 } 71 72 static void 73 restore_domain(void) 74 { 75 char domain[MAXHOSTNAMELEN]; 76 int fd; 77 ssize_t r, n = 0; 78 79 memset(domain, 0, sizeof(domain)); 80 if ((fd = open(DOMAIN_BACKUP_FILE, O_RDONLY)) < 0) 81 err(1, "open"); 82 while ((r = read(fd, domain + n, sizeof(domain) - n)) > 0) 83 n += r; 84 if (r < 0) 85 err(1, "read"); 86 if (setdomainname(domain, n) != 0) 87 err(1, "setdomainname"); 88 close(fd); 89 } 90 91 ATF_TC_WITH_CLEANUP(setdomainname_basic); 92 ATF_TC_HEAD(setdomainname_basic, tc) 93 { 94 atf_tc_set_md_var(tc, "descr", "A basic test of setdomainname(3)"); 95 atf_tc_set_md_var(tc, "require.user", "root"); 96 } 97 98 ATF_TC_BODY(setdomainname_basic, tc) 99 { 100 char name[MAXHOSTNAMELEN]; 101 size_t i; 102 103 backup_domain(); 104 for (i = 0; i < __arraycount(domains); i++) { 105 106 (void)memset(name, 0, sizeof(name)); 107 108 #ifdef __FreeBSD__ 109 /* 110 * Sanity checks to ensure that the wrong invariant isn't being 111 * tested for per PR # 181127 112 */ 113 ATF_REQUIRE_EQ(sizeof(domains[i]), MAXHOSTNAMELEN); 114 ATF_REQUIRE_EQ(sizeof(name), MAXHOSTNAMELEN); 115 116 ATF_REQUIRE(setdomainname(domains[i],sizeof(domains[i]) - 1) == 0); 117 ATF_REQUIRE(getdomainname(name, sizeof(name) - 1) == 0); 118 #else 119 ATF_REQUIRE(setdomainname(domains[i],sizeof(domains[i])) == 0); 120 ATF_REQUIRE(getdomainname(name, sizeof(name)) == 0); 121 #endif 122 ATF_REQUIRE(strcmp(domains[i], name) == 0); 123 } 124 125 } 126 127 ATF_TC_CLEANUP(setdomainname_basic, tc) 128 { 129 restore_domain(); 130 } 131 132 ATF_TC_WITH_CLEANUP(setdomainname_limit); 133 ATF_TC_HEAD(setdomainname_limit, tc) 134 { 135 atf_tc_set_md_var(tc, "descr", "Too long domain name errors out?"); 136 atf_tc_set_md_var(tc, "require.user", "root"); 137 } 138 139 ATF_TC_BODY(setdomainname_limit, tc) 140 { 141 char name[MAXHOSTNAMELEN + 1]; 142 143 (void)memset(name, 0, sizeof(name)); 144 backup_domain(); 145 146 #ifdef __FreeBSD__ 147 ATF_REQUIRE(setdomainname(name, MAXHOSTNAMELEN - 1 ) == 0); 148 ATF_REQUIRE(setdomainname(name, MAXHOSTNAMELEN) == -1); 149 #endif 150 ATF_REQUIRE(setdomainname(name, sizeof(name)) == -1); 151 } 152 153 ATF_TC_CLEANUP(setdomainname_limit, tc) 154 { 155 restore_domain(); 156 } 157 158 ATF_TC(setdomainname_perm); 159 ATF_TC_HEAD(setdomainname_perm, tc) 160 { 161 atf_tc_set_md_var(tc, "descr", "Can normal user set the domain name?"); 162 atf_tc_set_md_var(tc, "require.user", "unprivileged"); 163 } 164 165 ATF_TC_BODY(setdomainname_perm, tc) 166 { 167 char domain[MAXHOSTNAMELEN]; 168 169 memset(domain, 0, sizeof(domain)); 170 171 errno = 0; 172 ATF_REQUIRE_ERRNO(EPERM, setdomainname(domain, sizeof(domain)) == -1); 173 } 174 175 ATF_TP_ADD_TCS(tp) 176 { 177 ATF_TP_ADD_TC(tp, setdomainname_basic); 178 ATF_TP_ADD_TC(tp, setdomainname_limit); 179 ATF_TP_ADD_TC(tp, setdomainname_perm); 180 181 return atf_no_error(); 182 } 183