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 #include "hdb_locl.h" 35 36 RCSID("$Id: dbinfo.c 22306 2007-12-14 12:22:38Z lha $"); 37 38 struct hdb_dbinfo { 39 char *label; 40 char *realm; 41 char *dbname; 42 char *mkey_file; 43 char *acl_file; 44 char *log_file; 45 const krb5_config_binding *binding; 46 struct hdb_dbinfo *next; 47 }; 48 49 static int 50 get_dbinfo(krb5_context context, 51 const krb5_config_binding *db_binding, 52 const char *label, 53 struct hdb_dbinfo **db) 54 { 55 struct hdb_dbinfo *di; 56 const char *p; 57 58 *db = NULL; 59 60 p = krb5_config_get_string(context, db_binding, "dbname", NULL); 61 if(p == NULL) 62 return 0; 63 64 di = calloc(1, sizeof(*di)); 65 if (di == NULL) { 66 krb5_set_error_string(context, "malloc: out of memory"); 67 return ENOMEM; 68 } 69 di->label = strdup(label); 70 di->dbname = strdup(p); 71 72 p = krb5_config_get_string(context, db_binding, "realm", NULL); 73 if(p) 74 di->realm = strdup(p); 75 p = krb5_config_get_string(context, db_binding, "mkey_file", NULL); 76 if(p) 77 di->mkey_file = strdup(p); 78 p = krb5_config_get_string(context, db_binding, "acl_file", NULL); 79 if(p) 80 di->acl_file = strdup(p); 81 p = krb5_config_get_string(context, db_binding, "log_file", NULL); 82 if(p) 83 di->log_file = strdup(p); 84 85 di->binding = db_binding; 86 87 *db = di; 88 return 0; 89 } 90 91 92 int 93 hdb_get_dbinfo(krb5_context context, struct hdb_dbinfo **dbp) 94 { 95 const krb5_config_binding *db_binding; 96 struct hdb_dbinfo *di, **dt, *databases; 97 const char *default_dbname = HDB_DEFAULT_DB; 98 const char *default_mkey = HDB_DB_DIR "/m-key"; 99 const char *default_acl = HDB_DB_DIR "/kadmind.acl"; 100 const char *p; 101 int ret; 102 103 *dbp = NULL; 104 dt = NULL; 105 databases = NULL; 106 107 db_binding = krb5_config_get(context, NULL, krb5_config_list, 108 "kdc", 109 "database", 110 NULL); 111 if (db_binding) { 112 113 ret = get_dbinfo(context, db_binding, "default", &di); 114 if (ret == 0 && di) { 115 databases = di; 116 dt = &di->next; 117 } 118 119 for ( ; db_binding != NULL; db_binding = db_binding->next) { 120 121 if (db_binding->type != krb5_config_list) 122 continue; 123 124 ret = get_dbinfo(context, db_binding->u.list, 125 db_binding->name, &di); 126 if (ret) 127 krb5_err(context, 1, ret, "failed getting realm"); 128 129 if (di == NULL) 130 continue; 131 132 if (dt) 133 *dt = di; 134 else 135 databases = di; 136 dt = &di->next; 137 138 } 139 } 140 141 if(databases == NULL) { 142 /* if there are none specified, create one and use defaults */ 143 di = calloc(1, sizeof(*di)); 144 databases = di; 145 di->label = strdup("default"); 146 } 147 148 for(di = databases; di; di = di->next) { 149 if(di->dbname == NULL) { 150 di->dbname = strdup(default_dbname); 151 if (di->mkey_file == NULL) 152 di->mkey_file = strdup(default_mkey); 153 } 154 if(di->mkey_file == NULL) { 155 p = strrchr(di->dbname, '.'); 156 if(p == NULL || strchr(p, '/') != NULL) 157 /* final pathname component does not contain a . */ 158 asprintf(&di->mkey_file, "%s.mkey", di->dbname); 159 else 160 /* the filename is something.else, replace .else with 161 .mkey */ 162 asprintf(&di->mkey_file, "%.*s.mkey", 163 (int)(p - di->dbname), di->dbname); 164 } 165 if(di->acl_file == NULL) 166 di->acl_file = strdup(default_acl); 167 } 168 *dbp = databases; 169 return 0; 170 } 171 172 173 struct hdb_dbinfo * 174 hdb_dbinfo_get_next(struct hdb_dbinfo *dbp, struct hdb_dbinfo *dbprevp) 175 { 176 if (dbprevp == NULL) 177 return dbp; 178 else 179 return dbprevp->next; 180 } 181 182 const char * 183 hdb_dbinfo_get_label(krb5_context context, struct hdb_dbinfo *dbp) 184 { 185 return dbp->label; 186 } 187 188 const char * 189 hdb_dbinfo_get_realm(krb5_context context, struct hdb_dbinfo *dbp) 190 { 191 return dbp->realm; 192 } 193 194 const char * 195 hdb_dbinfo_get_dbname(krb5_context context, struct hdb_dbinfo *dbp) 196 { 197 return dbp->dbname; 198 } 199 200 const char * 201 hdb_dbinfo_get_mkey_file(krb5_context context, struct hdb_dbinfo *dbp) 202 { 203 return dbp->mkey_file; 204 } 205 206 const char * 207 hdb_dbinfo_get_acl_file(krb5_context context, struct hdb_dbinfo *dbp) 208 { 209 return dbp->acl_file; 210 } 211 212 const char * 213 hdb_dbinfo_get_log_file(krb5_context context, struct hdb_dbinfo *dbp) 214 { 215 return dbp->log_file; 216 } 217 218 const krb5_config_binding * 219 hdb_dbinfo_get_binding(krb5_context context, struct hdb_dbinfo *dbp) 220 { 221 return dbp->binding; 222 } 223 224 void 225 hdb_free_dbinfo(krb5_context context, struct hdb_dbinfo **dbp) 226 { 227 struct hdb_dbinfo *di, *ndi; 228 229 for(di = *dbp; di != NULL; di = ndi) { 230 ndi = di->next; 231 free (di->realm); 232 free (di->dbname); 233 if (di->mkey_file) 234 free (di->mkey_file); 235 free(di); 236 } 237 *dbp = NULL; 238 } 239 240 /** 241 * Return the directory where the hdb database resides. 242 * 243 * @param context Kerberos 5 context. 244 * 245 * @return string pointing to directory. 246 */ 247 248 const char * 249 hdb_db_dir(krb5_context context) 250 { 251 return HDB_DB_DIR; 252 } 253 254 /** 255 * Return the default hdb database resides. 256 * 257 * @param context Kerberos 5 context. 258 * 259 * @return string pointing to directory. 260 */ 261 262 const char * 263 hdb_default_db(krb5_context context) 264 { 265 return HDB_DEFAULT_DB; 266 } 267