crypto/external/bsd/heimdal/dist/lib/hdb/dbinfo.c

   1 /*      $NetBSD: dbinfo.c,v 1.1.1.2 2014/04/24 12:45:28 pettai Exp $    */
   2
   3 /*
   4  * Copyright (c) 2005 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  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  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include "hdb_locl.h"
  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_message(context, ENOMEM, "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_list(context, NULL,
 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->label);
 232         free (di->realm);
 233         free (di->dbname);
 234         free (di->mkey_file);
 235         free (di->acl_file);
 236         free (di->log_file);
 237         free(di);
 238     }
 239     *dbp = NULL;
 240 }
 241
 242 /**
 243  * Return the directory where the hdb database resides.
 244  *
 245  * @param context Kerberos 5 context.
 246  *
 247  * @return string pointing to directory.
 248  */
 249
 250 const char *
 251 hdb_db_dir(krb5_context context)
 252 {
 253     return HDB_DB_DIR;
 254 }
 255
 256 /**
 257  * Return the default hdb database resides.
 258  *
 259  * @param context Kerberos 5 context.
 260  *
 261  * @return string pointing to directory.
 262  */
 263
 264 const char *
 265 hdb_default_db(krb5_context context)
 266 {
 267     return HDB_DEFAULT_DB;
 268 }