1/* 2 * Copyright (c) 2005 Kungliga Tekniska H�gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34/* 35 * Check database for strange configurations on default principals 36 */ 37 38#include "kadmin_locl.h" 39#include "kadmin-commands.h" 40 41RCSID("$Id: check.c 20962 2007-06-07 05:09:24Z lha $"); 42 43static int 44get_check_entry(const char *name, kadm5_principal_ent_rec *ent) 45{ 46 krb5_error_code ret; 47 krb5_principal principal; 48 49 ret = krb5_parse_name(context, name, &principal); 50 if (ret) { 51 krb5_warn(context, ret, "krb5_unparse_name: %s", name); 52 return 1; 53 } 54 55 memset(ent, 0, sizeof(*ent)); 56 ret = kadm5_get_principal(kadm_handle, principal, ent, 0); 57 krb5_free_principal(context, principal); 58 if(ret) 59 return 1; 60 61 return 0; 62} 63 64 65static int 66do_check_entry(krb5_principal principal, void *data) 67{ 68 krb5_error_code ret; 69 kadm5_principal_ent_rec princ; 70 char *name; 71 int i; 72 73 ret = krb5_unparse_name(context, principal, &name); 74 if (ret) 75 return 1; 76 77 memset (&princ, 0, sizeof(princ)); 78 ret = kadm5_get_principal(kadm_handle, principal, &princ, 79 KADM5_PRINCIPAL | KADM5_KEY_DATA); 80 if(ret) { 81 krb5_warn(context, ret, "Failed to get principal: %s", name); 82 free(name); 83 return 0; 84 } 85 86 for (i = 0; i < princ.n_key_data; i++) { 87 size_t keysize; 88 ret = krb5_enctype_keysize(context, 89 princ.key_data[i].key_data_type[0], 90 &keysize); 91 if (ret == 0 && keysize != princ.key_data[i].key_data_length[0]) { 92 krb5_warnx(context, 93 "Principal %s enctype %d, wrong length: %lu\n", 94 name, princ.key_data[i].key_data_type[0], 95 (unsigned long)princ.key_data[i].key_data_length); 96 } 97 } 98 99 free(name); 100 kadm5_free_principal_ent(kadm_handle, &princ); 101 102 return 0; 103} 104 105int 106check(void *opt, int argc, char **argv) 107{ 108 kadm5_principal_ent_rec ent; 109 krb5_error_code ret; 110 char *realm = NULL, *p, *p2; 111 int found; 112 113 if (argc == 0) { 114 ret = krb5_get_default_realm(context, &realm); 115 if (ret) { 116 krb5_warn(context, ret, "krb5_get_default_realm"); 117 goto fail; 118 } 119 } else { 120 realm = strdup(argv[0]); 121 if (realm == NULL) { 122 krb5_warnx(context, "malloc"); 123 goto fail; 124 } 125 } 126 127 /* 128 * Check krbtgt/REALM@REALM 129 * 130 * For now, just check existance 131 */ 132 133 if (asprintf(&p, "%s/%s@%s", KRB5_TGS_NAME, realm, realm) == -1) { 134 krb5_warn(context, errno, "asprintf"); 135 goto fail; 136 } 137 138 ret = get_check_entry(p, &ent); 139 if (ret) { 140 printf("%s doesn't exist, are you sure %s is a realm in your database", 141 p, realm); 142 free(p); 143 goto fail; 144 } 145 free(p); 146 147 kadm5_free_principal_ent(kadm_handle, &ent); 148 149 /* 150 * Check kadmin/admin@REALM 151 */ 152 153 if (asprintf(&p, "kadmin/admin@%s", realm) == -1) { 154 krb5_warn(context, errno, "asprintf"); 155 goto fail; 156 } 157 158 ret = get_check_entry(p, &ent); 159 if (ret) { 160 printf("%s doesn't exist, " 161 "there is no way to do remote administration", p); 162 free(p); 163 goto fail; 164 } 165 free(p); 166 167 kadm5_free_principal_ent(kadm_handle, &ent); 168 169 /* 170 * Check kadmin/changepw@REALM 171 */ 172 173 if (asprintf(&p, "kadmin/changepw@%s", realm) == -1) { 174 krb5_warn(context, errno, "asprintf"); 175 goto fail; 176 } 177 178 ret = get_check_entry(p, &ent); 179 if (ret) { 180 printf("%s doesn't exist, " 181 "there is no way to do change password", p); 182 free(p); 183 goto fail; 184 } 185 free(p); 186 187 kadm5_free_principal_ent(kadm_handle, &ent); 188 189 /* 190 * Check for duplicate afs keys 191 */ 192 193 p2 = strdup(realm); 194 if (p2 == NULL) { 195 krb5_warn(context, errno, "malloc"); 196 free(p); 197 goto fail; 198 } 199 strlwr(p2); 200 201 if (asprintf(&p, "afs/%s@%s", p2, realm) == -1) { 202 krb5_warn(context, errno, "asprintf"); 203 free(p2); 204 goto fail; 205 } 206 free(p2); 207 208 ret = get_check_entry(p, &ent); 209 free(p); 210 if (ret == 0) { 211 kadm5_free_principal_ent(kadm_handle, &ent); 212 found = 1; 213 } else 214 found = 0; 215 216 if (asprintf(&p, "afs@%s", realm) == -1) { 217 krb5_warn(context, errno, "asprintf"); 218 goto fail; 219 } 220 221 ret = get_check_entry(p, &ent); 222 free(p); 223 if (ret == 0) { 224 kadm5_free_principal_ent(kadm_handle, &ent); 225 if (found) { 226 krb5_warnx(context, "afs@REALM and afs/cellname@REALM both exists"); 227 goto fail; 228 } 229 } 230 231 foreach_principal("*", do_check_entry, "check", NULL); 232 233 free(realm); 234 return 0; 235fail: 236 free(realm); 237 return 1; 238} 239