diff options
Diffstat (limited to 'crypto/heimdal/lib/hdb/keytab.c')
-rw-r--r-- | crypto/heimdal/lib/hdb/keytab.c | 259 |
1 files changed, 0 insertions, 259 deletions
diff --git a/crypto/heimdal/lib/hdb/keytab.c b/crypto/heimdal/lib/hdb/keytab.c deleted file mode 100644 index 5de3cc518ef6c..0000000000000 --- a/crypto/heimdal/lib/hdb/keytab.c +++ /dev/null @@ -1,259 +0,0 @@ -/* - * Copyright (c) 1999 - 2000 Kungliga Tekniska Högskolan - * (Royal Institute of Technology, Stockholm, Sweden). - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * 3. Neither the name of the Institute nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include "hdb_locl.h" - -/* keytab backend for HDB databases */ - -RCSID("$Id: keytab.c,v 1.3 2000/08/27 04:31:42 assar Exp $"); - -struct hdb_data { - char *dbname; - char *mkey; -}; - -/* - * the format for HDB keytabs is: - * HDB:[database:mkey] - */ - -static krb5_error_code -hdb_resolve(krb5_context context, const char *name, krb5_keytab id) -{ - struct hdb_data *d; - const char *db, *mkey; - - d = malloc(sizeof(*d)); - if(d == NULL) - return ENOMEM; - db = name; - mkey = strchr(name, ':'); - if(mkey == NULL || mkey[1] == '\0') { - if(*name == '\0') - d->dbname = NULL; - else { - d->dbname = strdup(name); - if(d->dbname == NULL) { - free(d); - return ENOMEM; - } - } - d->mkey = NULL; - } else { - if((mkey - db) == 0) { - d->dbname = NULL; - } else { - d->dbname = malloc(mkey - db); - if(d->dbname == NULL) { - free(d); - return ENOMEM; - } - memmove(d->dbname, db, mkey - db); - d->dbname[mkey - db] = '\0'; - } - d->mkey = strdup(mkey + 1); - if(d->mkey == NULL) { - free(d->dbname); - free(d); - return ENOMEM; - } - } - id->data = d; - return 0; -} - -static krb5_error_code -hdb_close(krb5_context context, krb5_keytab id) -{ - struct hdb_data *d = id->data; - - free(d->dbname); - free(d->mkey); - free(d); - return 0; -} - -static krb5_error_code -hdb_get_name(krb5_context context, - krb5_keytab id, - char *name, - size_t namesize) -{ - struct hdb_data *d = id->data; - - snprintf(name, namesize, "%s%s%s", - d->dbname ? d->dbname : "", - (d->dbname || d->mkey) ? ":" : "", - d->mkey ? d->mkey : ""); - return 0; -} - -static void -set_config (krb5_context context, - krb5_config_binding *binding, - const char **dbname, - const char **mkey) -{ - *dbname = krb5_config_get_string(context, binding, "dbname", NULL); - *mkey = krb5_config_get_string(context, binding, "mkey_file", NULL); -} - -/* - * try to figure out the database (`dbname') and master-key (`mkey') - * that should be used for `principal'. - */ - -static void -find_db (krb5_context context, - const char **dbname, - const char **mkey, - krb5_const_principal principal) -{ - krb5_config_binding *top_bind = NULL; - krb5_config_binding *default_binding = NULL; - krb5_config_binding *db; - krb5_realm *prealm = krb5_princ_realm(context, (krb5_principal)principal); - - *dbname = *mkey = NULL; - - while ((db = (krb5_config_binding *) - krb5_config_get_next(context, - NULL, - &top_bind, - krb5_config_list, - "kdc", - "database", - NULL)) != NULL) { - const char *p; - - p = krb5_config_get_string (context, db, "realm", NULL); - if (p == NULL) { - if(default_binding) { - krb5_warnx(context, "WARNING: more than one realm-less " - "database specification"); - krb5_warnx(context, "WARNING: using the first encountered"); - } else - default_binding = db; - } else if (strcmp (*prealm, p) == 0) { - set_config (context, db, dbname, mkey); - break; - } - } - if (*dbname == NULL && default_binding != NULL) - set_config (context, default_binding, dbname, mkey); - if (*dbname == NULL) - *dbname = HDB_DEFAULT_DB; -} - -/* - * find the keytab entry in `id' for `principal, kvno, enctype' and return - * it in `entry'. return 0 or an error code - */ - -static krb5_error_code -hdb_get_entry(krb5_context context, - krb5_keytab id, - krb5_const_principal principal, - krb5_kvno kvno, - krb5_enctype enctype, - krb5_keytab_entry *entry) -{ - hdb_entry ent; - krb5_error_code ret; - struct hdb_data *d = id->data; - int i; - HDB *db; - const char *dbname = d->dbname; - const char *mkey = d->mkey; - - if (dbname == NULL) - find_db (context, &dbname, &mkey, principal); - - ret = hdb_create (context, &db, dbname); - if (ret) - return ret; - ret = hdb_set_master_keyfile (context, db, mkey); - if (ret) { - (*db->destroy)(context, db); - return ret; - } - - ret = (*db->open)(context, db, O_RDONLY, 0); - if (ret) { - (*db->destroy)(context, db); - return ret; - } - ent.principal = (krb5_principal)principal; - ret = (*db->fetch)(context, db, HDB_F_DECRYPT, &ent); - (*db->close)(context, db); - (*db->destroy)(context, db); - - if(ret == HDB_ERR_NOENTRY) - return KRB5_KT_NOTFOUND; - else if(ret) - return ret; - if(kvno && ent.kvno != kvno) { - hdb_free_entry(context, &ent); - return KRB5_KT_NOTFOUND; - } - if(enctype == 0) - if(ent.keys.len > 0) - enctype = ent.keys.val[0].key.keytype; - ret = KRB5_KT_NOTFOUND; - for(i = 0; i < ent.keys.len; i++) { - if(ent.keys.val[i].key.keytype == enctype) { - krb5_copy_principal(context, principal, &entry->principal); - entry->vno = ent.kvno; - krb5_copy_keyblock_contents(context, - &ent.keys.val[i].key, - &entry->keyblock); - ret = 0; - break; - } - } - hdb_free_entry(context, &ent); - return ret; -} - -krb5_kt_ops hdb_kt_ops = { - "HDB", - hdb_resolve, - hdb_get_name, - hdb_close, - hdb_get_entry, - NULL, /* start_seq_get */ - NULL, /* next_entry */ - NULL, /* end_seq_get */ - NULL, /* add */ - NULL /* remove */ -}; |