/* * 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.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, unsigned 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_fetch(krb5_context context, HDB *db, krb5_const_principal principal, unsigned flags, hdb_entry_ex *entry_ex) { struct samba_kdc_db_context *kdc_db_ctx; flags &= ~HDB_F_KVNO_SPECIFIED; 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, 0, 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 = hdb_samba4_fetch; (*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 };