6850d6a65f
most of these warnings are not problems because of ample use of abort() calls. However, the large number of warnings makes it difficult to identify real problems. Initialize the variables to shut up the compilers. Change-Id: I8477c11b17c7b6a7d9074c721fdd2d7303b186a8
348 lines
9.3 KiB
C
348 lines
9.3 KiB
C
/*
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* Copyright (c) 1997-2002 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "hdb_locl.h"
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int
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hdb_principal2key(krb5_context context, krb5_const_principal p, krb5_data *key)
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{
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Principal new;
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size_t len = 0;
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int ret;
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ret = copy_Principal(p, &new);
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if(ret)
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return ret;
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new.name.name_type = 0;
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ASN1_MALLOC_ENCODE(Principal, key->data, key->length, &new, &len, ret);
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if (ret == 0 && key->length != len)
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krb5_abortx(context, "internal asn.1 encoder error");
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free_Principal(&new);
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return ret;
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}
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int
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hdb_key2principal(krb5_context context, krb5_data *key, krb5_principal p)
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{
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return decode_Principal(key->data, key->length, p, NULL);
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}
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int
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hdb_entry2value(krb5_context context, const hdb_entry *ent, krb5_data *value)
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{
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size_t len = 0;
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int ret;
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ASN1_MALLOC_ENCODE(hdb_entry, value->data, value->length, ent, &len, ret);
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if (ret == 0 && value->length != len)
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krb5_abortx(context, "internal asn.1 encoder error");
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return ret;
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}
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int
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hdb_value2entry(krb5_context context, krb5_data *value, hdb_entry *ent)
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{
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return decode_hdb_entry(value->data, value->length, ent, NULL);
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}
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int
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hdb_entry_alias2value(krb5_context context,
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const hdb_entry_alias *alias,
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krb5_data *value)
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{
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size_t len = 0;
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int ret;
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ASN1_MALLOC_ENCODE(hdb_entry_alias, value->data, value->length,
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alias, &len, ret);
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if (ret == 0 && value->length != len)
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krb5_abortx(context, "internal asn.1 encoder error");
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return ret;
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}
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int
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hdb_value2entry_alias(krb5_context context, krb5_data *value,
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hdb_entry_alias *ent)
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{
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return decode_hdb_entry_alias(value->data, value->length, ent, NULL);
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}
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krb5_error_code
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_hdb_fetch_kvno(krb5_context context, HDB *db, krb5_const_principal principal,
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unsigned flags, krb5_kvno kvno, hdb_entry_ex *entry)
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{
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krb5_principal enterprise_principal = NULL;
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krb5_data key, value;
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krb5_error_code ret;
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int code;
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if (principal->name.name_type == KRB5_NT_ENTERPRISE_PRINCIPAL) {
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if (principal->name.name_string.len != 1) {
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ret = KRB5_PARSE_MALFORMED;
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krb5_set_error_message(context, ret, "malformed principal: "
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"enterprise name with %d name components",
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principal->name.name_string.len);
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return ret;
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}
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ret = krb5_parse_name(context, principal->name.name_string.val[0],
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&enterprise_principal);
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if (ret)
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return ret;
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principal = enterprise_principal;
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}
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hdb_principal2key(context, principal, &key);
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if (enterprise_principal)
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krb5_free_principal(context, enterprise_principal);
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code = db->hdb__get(context, db, key, &value);
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krb5_data_free(&key);
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if(code)
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return code;
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code = hdb_value2entry(context, &value, &entry->entry);
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if (code == ASN1_BAD_ID && (flags & HDB_F_CANON) == 0) {
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krb5_data_free(&value);
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return HDB_ERR_NOENTRY;
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} else if (code == ASN1_BAD_ID) {
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hdb_entry_alias alias;
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code = hdb_value2entry_alias(context, &value, &alias);
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if (code) {
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krb5_data_free(&value);
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return code;
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}
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hdb_principal2key(context, alias.principal, &key);
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krb5_data_free(&value);
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free_hdb_entry_alias(&alias);
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code = db->hdb__get(context, db, key, &value);
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krb5_data_free(&key);
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if (code)
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return code;
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code = hdb_value2entry(context, &value, &entry->entry);
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if (code) {
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krb5_data_free(&value);
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return code;
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}
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}
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krb5_data_free(&value);
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if (db->hdb_master_key_set && (flags & HDB_F_DECRYPT)) {
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code = hdb_unseal_keys (context, db, &entry->entry);
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if (code)
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hdb_free_entry(context, entry);
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}
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return code;
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}
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static krb5_error_code
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hdb_remove_aliases(krb5_context context, HDB *db, krb5_data *key)
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{
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const HDB_Ext_Aliases *aliases;
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krb5_error_code code;
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hdb_entry oldentry;
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krb5_data value;
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size_t i;
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code = db->hdb__get(context, db, *key, &value);
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if (code == HDB_ERR_NOENTRY)
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return 0;
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else if (code)
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return code;
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code = hdb_value2entry(context, &value, &oldentry);
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krb5_data_free(&value);
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if (code)
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return code;
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code = hdb_entry_get_aliases(&oldentry, &aliases);
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if (code || aliases == NULL) {
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free_hdb_entry(&oldentry);
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return code;
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}
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for (i = 0; i < aliases->aliases.len; i++) {
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krb5_data akey;
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hdb_principal2key(context, &aliases->aliases.val[i], &akey);
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code = db->hdb__del(context, db, akey);
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krb5_data_free(&akey);
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if (code) {
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free_hdb_entry(&oldentry);
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return code;
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}
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}
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free_hdb_entry(&oldentry);
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return 0;
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}
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static krb5_error_code
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hdb_add_aliases(krb5_context context, HDB *db,
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unsigned flags, hdb_entry_ex *entry)
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{
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const HDB_Ext_Aliases *aliases;
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krb5_error_code code;
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krb5_data key, value;
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size_t i;
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code = hdb_entry_get_aliases(&entry->entry, &aliases);
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if (code || aliases == NULL)
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return code;
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for (i = 0; i < aliases->aliases.len; i++) {
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hdb_entry_alias entryalias;
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entryalias.principal = entry->entry.principal;
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hdb_principal2key(context, &aliases->aliases.val[i], &key);
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code = hdb_entry_alias2value(context, &entryalias, &value);
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if (code) {
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krb5_data_free(&key);
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return code;
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}
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code = db->hdb__put(context, db, flags, key, value);
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krb5_data_free(&key);
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krb5_data_free(&value);
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if (code)
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return code;
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}
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return 0;
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}
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static krb5_error_code
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hdb_check_aliases(krb5_context context, HDB *db, hdb_entry_ex *entry)
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{
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const HDB_Ext_Aliases *aliases;
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int code;
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size_t i;
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/* check if new aliases already is used */
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code = hdb_entry_get_aliases(&entry->entry, &aliases);
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if (code)
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return code;
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for (i = 0; aliases && i < aliases->aliases.len; i++) {
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hdb_entry_alias alias;
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krb5_data akey, value;
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hdb_principal2key(context, &aliases->aliases.val[i], &akey);
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code = db->hdb__get(context, db, akey, &value);
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krb5_data_free(&akey);
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if (code == HDB_ERR_NOENTRY)
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continue;
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else if (code)
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return code;
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code = hdb_value2entry_alias(context, &value, &alias);
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krb5_data_free(&value);
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if (code == ASN1_BAD_ID)
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return HDB_ERR_EXISTS;
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else if (code)
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return code;
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code = krb5_principal_compare(context, alias.principal,
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entry->entry.principal);
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free_hdb_entry_alias(&alias);
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if (code == 0)
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return HDB_ERR_EXISTS;
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}
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return 0;
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}
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krb5_error_code
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_hdb_store(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
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{
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krb5_data key, value;
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int code;
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/* check if new aliases already is used */
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code = hdb_check_aliases(context, db, entry);
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if (code)
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return code;
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if(entry->entry.generation == NULL) {
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struct timeval t;
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entry->entry.generation = malloc(sizeof(*entry->entry.generation));
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if(entry->entry.generation == NULL) {
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krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
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return ENOMEM;
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}
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gettimeofday(&t, NULL);
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entry->entry.generation->time = t.tv_sec;
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entry->entry.generation->usec = t.tv_usec;
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entry->entry.generation->gen = 0;
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} else
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entry->entry.generation->gen++;
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code = hdb_seal_keys(context, db, &entry->entry);
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if (code)
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return code;
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hdb_principal2key(context, entry->entry.principal, &key);
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/* remove aliases */
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code = hdb_remove_aliases(context, db, &key);
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if (code) {
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krb5_data_free(&key);
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return code;
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}
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hdb_entry2value(context, &entry->entry, &value);
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code = db->hdb__put(context, db, flags & HDB_F_REPLACE, key, value);
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krb5_data_free(&value);
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krb5_data_free(&key);
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if (code)
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return code;
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code = hdb_add_aliases(context, db, flags, entry);
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return code;
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}
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krb5_error_code
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_hdb_remove(krb5_context context, HDB *db, krb5_const_principal principal)
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{
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krb5_data key;
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int code;
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hdb_principal2key(context, principal, &key);
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code = hdb_remove_aliases(context, db, &key);
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if (code) {
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krb5_data_free(&key);
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return code;
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}
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code = db->hdb__del(context, db, key);
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krb5_data_free(&key);
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return code;
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}
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