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/*
* Copyright (c) 1999-2001, 2003, PADL Software Pty Ltd.
* Copyright (c) 2004-2009, Andrew Bartlett <abartlet@samba.org>.
* Copyright (c) 2004, Stefan Metzmacher <metze@samba.org>
* 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 PADL Software 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 PADL SOFTWARE 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 PADL SOFTWARE 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 "includes.h"
#include "auth/auth.h"
#include "auth/credentials/credentials.h"
#include "dsdb/samdb/samdb.h"
#include "param/param.h"
#include "kdc/kdc-glue.h"
#include "kdc/db-glue.h"
static krb5_error_code hdb_samba4_open(krb5_context context, HDB *db, int flags, mode_t mode)
{
if (db->hdb_master_key_set) {
krb5_error_code ret = HDB_ERR_NOENTRY;
krb5_warnx(context, "hdb_samba4_open: use of a master key incompatible with LDB\n");
krb5_set_error_message(context, ret, "hdb_samba4_open: use of a master key incompatible with LDB\n");
return ret;
}
return 0;
}
static krb5_error_code hdb_samba4_close(krb5_context context, HDB *db)
{
return 0;
}
static krb5_error_code hdb_samba4_lock(krb5_context context, HDB *db, int operation)
{
return 0;
}
static krb5_error_code hdb_samba4_unlock(krb5_context context, HDB *db)
{
return 0;
}
static krb5_error_code hdb_samba4_rename(krb5_context context, HDB *db, const char *new_name)
{
return HDB_ERR_DB_INUSE;
}
static krb5_error_code hdb_samba4_store(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
{
return HDB_ERR_DB_INUSE;
}
static krb5_error_code hdb_samba4_remove(krb5_context context, HDB *db, krb5_const_principal principal)
{
return HDB_ERR_DB_INUSE;
}
static krb5_error_code hdb_samba4_fetch_kvno(krb5_context context, HDB *db,
krb5_const_principal principal,
unsigned flags,
krb5_kvno kvno,
hdb_entry_ex *entry_ex)
{
struct samba_kdc_db_context *kdc_db_ctx;
kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
struct samba_kdc_db_context);
return samba_kdc_fetch(context, kdc_db_ctx, principal, flags, kvno, entry_ex);
}
static krb5_error_code hdb_samba4_firstkey(krb5_context context, HDB *db, unsigned flags,
hdb_entry_ex *entry)
{
struct samba_kdc_db_context *kdc_db_ctx;
kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
struct samba_kdc_db_context);
return samba_kdc_firstkey(context, kdc_db_ctx, entry);
}
static krb5_error_code hdb_samba4_nextkey(krb5_context context, HDB *db, unsigned flags,
hdb_entry_ex *entry)
{
struct samba_kdc_db_context *kdc_db_ctx;
kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
struct samba_kdc_db_context);
return samba_kdc_nextkey(context, kdc_db_ctx, entry);
}
static krb5_error_code hdb_samba4_destroy(krb5_context context, HDB *db)
{
talloc_free(db);
return 0;
}
static krb5_error_code
hdb_samba4_check_identical_client_and_server(krb5_context context, HDB *db,
hdb_entry_ex *entry,
krb5_const_principal target_principal)
{
struct samba_kdc_db_context *kdc_db_ctx;
kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
struct samba_kdc_db_context);
return samba_kdc_check_identical_client_and_server(context, kdc_db_ctx,
entry,
target_principal);
}
static krb5_error_code
hdb_samba4_check_pkinit_ms_upn_match(krb5_context context, HDB *db,
hdb_entry_ex *entry,
krb5_const_principal certificate_principal)
{
struct samba_kdc_db_context *kdc_db_ctx;
kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
struct samba_kdc_db_context);
return samba_kdc_check_pkinit_ms_upn_match(context, kdc_db_ctx,
entry,
certificate_principal);
}
/* This interface is to be called by the KDC and libnet_keytab_dump,
* which is expecting Samba calling conventions.
* It is also called by a wrapper (hdb_samba4_create) from the
* kpasswdd -> krb5 -> keytab_hdb -> hdb code */
NTSTATUS hdb_samba4_create_kdc(struct samba_kdc_base_context *base_ctx,
krb5_context context, struct HDB **db)
{
struct samba_kdc_db_context *kdc_db_ctx;
NTSTATUS nt_status;
*db = talloc(base_ctx, HDB);
if (!*db) {
krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
return NT_STATUS_NO_MEMORY;
}
(*db)->hdb_master_key_set = 0;
(*db)->hdb_db = NULL;
(*db)->hdb_capability_flags = 0;
nt_status = samba_kdc_setup_db_ctx(*db, base_ctx, &kdc_db_ctx);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(*db);
return nt_status;
}
(*db)->hdb_db = kdc_db_ctx;
(*db)->hdb_dbc = NULL;
(*db)->hdb_open = hdb_samba4_open;
(*db)->hdb_close = hdb_samba4_close;
(*db)->hdb_fetch_kvno = hdb_samba4_fetch_kvno;
(*db)->hdb_store = hdb_samba4_store;
(*db)->hdb_remove = hdb_samba4_remove;
(*db)->hdb_firstkey = hdb_samba4_firstkey;
(*db)->hdb_nextkey = hdb_samba4_nextkey;
(*db)->hdb_lock = hdb_samba4_lock;
(*db)->hdb_unlock = hdb_samba4_unlock;
(*db)->hdb_rename = hdb_samba4_rename;
/* we don't implement these, as we are not a lockable database */
(*db)->hdb__get = NULL;
(*db)->hdb__put = NULL;
/* kadmin should not be used for deletes - use other tools instead */
(*db)->hdb__del = NULL;
(*db)->hdb_destroy = hdb_samba4_destroy;
(*db)->hdb_auth_status = NULL;
(*db)->hdb_check_constrained_delegation = hdb_samba4_check_identical_client_and_server;
(*db)->hdb_check_pkinit_ms_upn_match = hdb_samba4_check_pkinit_ms_upn_match;
(*db)->hdb_check_s4u2self = hdb_samba4_check_identical_client_and_server;
return NT_STATUS_OK;
}
static krb5_error_code hdb_samba4_create(krb5_context context, struct HDB **db, const char *arg)
{
NTSTATUS nt_status;
void *ptr;
struct samba_kdc_base_context *base_ctx;
if (sscanf(arg, "&%p", &ptr) != 1) {
return EINVAL;
}
base_ctx = talloc_get_type_abort(ptr, struct samba_kdc_base_context);
/* The global kdc_mem_ctx and kdc_lp_ctx, Disgusting, ugly hack, but it means one less private hook */
nt_status = hdb_samba4_create_kdc(base_ctx, context, db);
if (NT_STATUS_IS_OK(nt_status)) {
return 0;
}
return EINVAL;
}
/* Only used in the hdb-backed keytab code
* for a keytab of 'samba4&<address>', to find
* kpasswd's key in the main DB, and to
* copy all the keys into a file (libnet_keytab_export)
*
* The <address> is the string form of a pointer to a talloced struct hdb_samba_context
*/
struct hdb_method hdb_samba4 = {
.interface_version = HDB_INTERFACE_VERSION,
.prefix = "samba4",
.create = hdb_samba4_create
};
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