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samba-mirror/source4/kdc/hdb-samba4.c
Andrew Bartlett 12ce07e53b s4-kdc: Add hdb plugin for samba4, to allow kadmin to work
This will help users who are used to the kadmin interface, and could
be extended to import existing MIT or Heimdal keys into a Samba4 AD
domain.

To use, add to your krb5.conf

[kdc]

database = {
   dbname = samba4:
}

or

[kdc]

database = {
   dbname = samba4:/usr/local/samba/etc/smb.conf
}

And copy hdb_samba4.so from PREFIX/modules/hdb to your Heimdal lib directory

Andrew Bartlett

Autobuild-User: Andrew Bartlett <abartlet@samba.org>
Autobuild-Date: Wed Nov 30 03:22:11 CET 2011 on sn-devel-104
2011-11-30 03:22:11 +01:00

221 lines
6.8 KiB
C

/*
* 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 "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_constrained_delegation(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_s4u2proxy(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);
}
static krb5_error_code
hdb_samba4_check_s4u2self(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_s4u2self(context, kdc_db_ctx,
entry,
target_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_constrained_delegation;
(*db)->hdb_check_pkinit_ms_upn_match = hdb_samba4_check_pkinit_ms_upn_match;
(*db)->hdb_check_s4u2self = hdb_samba4_check_s4u2self;
return NT_STATUS_OK;
}