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b01388da8a
Cases to handle KDC_AUTH_EVENT_VALIDATED_LONG_TERM_KEY and
KDC_AUTH_EVENT_PREAUTH_SUCCEEDED were removed in:
commit 791be84c3e
Author: Stefan Metzmacher <metze@samba.org>
Date: Wed Mar 2 10:10:08 2022 +1300
s4:kdc: hdb_samba4_audit() is only called once per request
Normally these auth event types are overwritten with the
KDC_AUTH_EVENT_CLIENT_AUTHORIZED event type, but if a client passes the
pre-authentication check, and happens to fail the client access check
(e.g. because the account is disabled), we get error messages of the
form:
hdb_samba4_audit: Unhandled hdb_auth_status=9 => INTERNAL_ERROR
To avoid such errors, use the error code provided in the request
structure to obtain a relevant status code in cases not handled
explicitly.
For unexpected values we return KRB5KRB_ERR_GENERIC
in order to hopefully prevent success. And within make test
we panic in order let a ci run fail.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15015
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
811 lines
22 KiB
C
811 lines
22 KiB
C
/*
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* Copyright (c) 1999-2001, 2003, PADL Software Pty Ltd.
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* Copyright (c) 2004-2009, Andrew Bartlett <abartlet@samba.org>.
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* Copyright (c) 2004, Stefan Metzmacher <metze@samba.org>
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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 PADL Software 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 PADL SOFTWARE 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 PADL SOFTWARE 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 "includes.h"
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#include "kdc/kdc-glue.h"
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#include "kdc/db-glue.h"
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#include "auth/auth_sam.h"
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#include "auth/common_auth.h"
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#include <ldb.h>
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#include "sdb.h"
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#include "sdb_hdb.h"
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#include "dsdb/samdb/samdb.h"
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#include "param/param.h"
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#include "../lib/tsocket/tsocket.h"
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#include "librpc/gen_ndr/ndr_winbind_c.h"
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#include "lib/messaging/irpc.h"
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#include "hdb.h"
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#include <kdc-audit.h>
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static krb5_error_code hdb_samba4_open(krb5_context context, HDB *db, int flags, mode_t mode)
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{
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if (db->hdb_master_key_set) {
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krb5_error_code ret = HDB_ERR_NOENTRY;
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krb5_warnx(context, "hdb_samba4_open: use of a master key incompatible with LDB\n");
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krb5_set_error_message(context, ret, "hdb_samba4_open: use of a master key incompatible with LDB\n");
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return ret;
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}
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return 0;
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}
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static krb5_error_code hdb_samba4_close(krb5_context context, HDB *db)
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{
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return 0;
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}
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static krb5_error_code hdb_samba4_lock(krb5_context context, HDB *db, int operation)
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{
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return 0;
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}
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static krb5_error_code hdb_samba4_unlock(krb5_context context, HDB *db)
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{
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return 0;
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}
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static krb5_error_code hdb_samba4_rename(krb5_context context, HDB *db, const char *new_name)
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{
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return HDB_ERR_DB_INUSE;
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}
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static krb5_error_code hdb_samba4_store(krb5_context context, HDB *db, unsigned flags, hdb_entry *entry)
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{
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return HDB_ERR_DB_INUSE;
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}
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/*
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* If we ever want kadmin to work fast, we might try and reopen the
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* ldb with LDB_NOSYNC
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*/
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static krb5_error_code hdb_samba4_set_sync(krb5_context context, struct HDB *db, int set_sync)
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{
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return 0;
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}
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static void hdb_samba4_free_entry_context(krb5_context context, struct HDB *db, hdb_entry *entry)
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{
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/*
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* This function is now called for every HDB entry, not just those with
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* 'context' set, so we have to check that the context is not NULL.
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*/
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if (entry->context != NULL) {
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/* this function is called only from hdb_free_entry().
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* Make sure we neutralize the destructor or we will
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* get a double free later when hdb_free_entry() will
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* try to call free_hdb_entry() */
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talloc_set_destructor(entry->context, NULL);
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/* now proceed to free the talloc part */
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talloc_free(entry->context);
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}
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}
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static int hdb_samba4_fill_fast_cookie(krb5_context context,
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struct samba_kdc_db_context *kdc_db_ctx)
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{
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struct ldb_message *msg = ldb_msg_new(kdc_db_ctx);
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int ldb_ret;
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uint8_t secretbuffer[32];
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struct ldb_val val = data_blob_const(secretbuffer,
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sizeof(secretbuffer));
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if (msg == NULL) {
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DBG_ERR("Failed to allocate msg for new fast cookie\n");
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return LDB_ERR_OPERATIONS_ERROR;
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}
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/* Fill in all the keys with the same secret */
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generate_secret_buffer(secretbuffer,
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sizeof(secretbuffer));
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msg->dn = kdc_db_ctx->fx_cookie_dn;
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ldb_ret = ldb_msg_add_value(msg, "secret", &val, NULL);
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if (ldb_ret != LDB_SUCCESS) {
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return ldb_ret;
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}
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ldb_ret = ldb_add(kdc_db_ctx->secrets_db,
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msg);
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if (ldb_ret != LDB_SUCCESS) {
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DBG_ERR("Failed to add fast cookie to ldb: %s\n",
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ldb_errstring(kdc_db_ctx->secrets_db));
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}
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return ldb_ret;
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}
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static krb5_error_code hdb_samba4_fetch_fast_cookie(krb5_context context,
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struct samba_kdc_db_context *kdc_db_ctx,
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hdb_entry *entry_ex)
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{
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krb5_error_code ret = SDB_ERR_NOENTRY;
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TALLOC_CTX *mem_ctx;
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struct ldb_result *res;
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int ldb_ret;
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struct sdb_entry_ex sdb_entry_ex = {};
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const char *attrs[] = {
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"secret",
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NULL
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};
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const struct ldb_val *val;
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mem_ctx = talloc_named(kdc_db_ctx, 0, "samba_kdc_fetch context");
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if (!mem_ctx) {
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ret = ENOMEM;
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krb5_set_error_message(context, ret, "samba_kdc_fetch: talloc_named() failed!");
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return ret;
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}
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/* search for CN=FX-COOKIE */
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ldb_ret = ldb_search(kdc_db_ctx->secrets_db,
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mem_ctx,
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&res,
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kdc_db_ctx->fx_cookie_dn,
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LDB_SCOPE_BASE,
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attrs, NULL);
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if (ldb_ret == LDB_ERR_NO_SUCH_OBJECT || res->count == 0) {
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ldb_ret = hdb_samba4_fill_fast_cookie(context,
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kdc_db_ctx);
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if (ldb_ret != LDB_SUCCESS) {
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TALLOC_FREE(mem_ctx);
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return HDB_ERR_NO_WRITE_SUPPORT;
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}
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/* search for CN=FX-COOKIE */
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ldb_ret = ldb_search(kdc_db_ctx->secrets_db,
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mem_ctx,
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&res,
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kdc_db_ctx->fx_cookie_dn,
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LDB_SCOPE_BASE,
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attrs, NULL);
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if (ldb_ret != LDB_SUCCESS || res->count != 1) {
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TALLOC_FREE(mem_ctx);
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return HDB_ERR_NOENTRY;
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}
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}
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val = ldb_msg_find_ldb_val(res->msgs[0],
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"secret");
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if (val == NULL || val->length != 32) {
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TALLOC_FREE(mem_ctx);
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return HDB_ERR_NOENTRY;
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}
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ret = krb5_make_principal(context,
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&sdb_entry_ex.entry.principal,
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KRB5_WELLKNOWN_ORG_H5L_REALM,
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KRB5_WELLKNOWN_NAME, "org.h5l.fast-cookie",
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NULL);
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if (ret) {
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TALLOC_FREE(mem_ctx);
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return ret;
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}
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ret = samba_kdc_set_fixed_keys(context, kdc_db_ctx,
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val, &sdb_entry_ex);
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if (ret != 0) {
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return ret;
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}
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ret = sdb_entry_ex_to_hdb_entry_ex(context,
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&sdb_entry_ex,
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entry_ex);
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sdb_free_entry(&sdb_entry_ex);
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TALLOC_FREE(mem_ctx);
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return ret;
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}
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static krb5_error_code hdb_samba4_fetch_kvno(krb5_context context, HDB *db,
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krb5_const_principal principal,
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unsigned flags,
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krb5_kvno kvno,
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hdb_entry *entry_ex)
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{
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struct samba_kdc_db_context *kdc_db_ctx;
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struct sdb_entry_ex sdb_entry_ex = {};
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krb5_error_code code, ret;
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uint32_t sflags;
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kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
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struct samba_kdc_db_context);
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if (flags & HDB_F_GET_FAST_COOKIE) {
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return hdb_samba4_fetch_fast_cookie(context,
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kdc_db_ctx,
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entry_ex);
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}
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sflags = (flags & SDB_F_HDB_MASK);
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ret = samba_kdc_fetch(context,
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kdc_db_ctx,
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principal,
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sflags,
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kvno,
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&sdb_entry_ex);
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switch (ret) {
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case 0:
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code = 0;
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break;
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case SDB_ERR_WRONG_REALM:
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/*
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* If SDB_ERR_WRONG_REALM is returned we need to process the
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* sdb_entry to fill the principal in the HDB entry.
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*/
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code = HDB_ERR_WRONG_REALM;
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break;
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case SDB_ERR_NOENTRY:
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return HDB_ERR_NOENTRY;
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case SDB_ERR_NOT_FOUND_HERE:
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return HDB_ERR_NOT_FOUND_HERE;
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default:
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return ret;
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}
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ret = sdb_entry_ex_to_hdb_entry_ex(context, &sdb_entry_ex, entry_ex);
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sdb_free_entry(&sdb_entry_ex);
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if (code != 0 && ret != 0) {
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code = ret;
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}
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return code;
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}
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static krb5_error_code hdb_samba4_firstkey(krb5_context context, HDB *db, unsigned flags,
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hdb_entry *entry)
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{
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struct samba_kdc_db_context *kdc_db_ctx;
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struct sdb_entry_ex sdb_entry_ex = {};
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krb5_error_code ret;
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kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
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struct samba_kdc_db_context);
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ret = samba_kdc_firstkey(context, kdc_db_ctx, &sdb_entry_ex);
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switch (ret) {
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case 0:
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break;
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case SDB_ERR_WRONG_REALM:
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return HDB_ERR_WRONG_REALM;
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case SDB_ERR_NOENTRY:
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return HDB_ERR_NOENTRY;
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case SDB_ERR_NOT_FOUND_HERE:
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return HDB_ERR_NOT_FOUND_HERE;
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default:
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return ret;
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}
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ret = sdb_entry_ex_to_hdb_entry_ex(context, &sdb_entry_ex, entry);
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sdb_free_entry(&sdb_entry_ex);
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return ret;
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}
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static krb5_error_code hdb_samba4_nextkey(krb5_context context, HDB *db, unsigned flags,
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hdb_entry *entry)
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{
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struct samba_kdc_db_context *kdc_db_ctx;
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struct sdb_entry_ex sdb_entry_ex = {};
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krb5_error_code ret;
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kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
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struct samba_kdc_db_context);
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ret = samba_kdc_nextkey(context, kdc_db_ctx, &sdb_entry_ex);
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switch (ret) {
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case 0:
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break;
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case SDB_ERR_WRONG_REALM:
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return HDB_ERR_WRONG_REALM;
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case SDB_ERR_NOENTRY:
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return HDB_ERR_NOENTRY;
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case SDB_ERR_NOT_FOUND_HERE:
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return HDB_ERR_NOT_FOUND_HERE;
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default:
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return ret;
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}
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ret = sdb_entry_ex_to_hdb_entry_ex(context, &sdb_entry_ex, entry);
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sdb_free_entry(&sdb_entry_ex);
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return ret;
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}
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static krb5_error_code hdb_samba4_destroy(krb5_context context, HDB *db)
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{
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talloc_free(db);
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return 0;
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}
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static krb5_error_code
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hdb_samba4_check_constrained_delegation(krb5_context context, HDB *db,
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hdb_entry *entry,
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krb5_const_principal target_principal)
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{
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struct samba_kdc_db_context *kdc_db_ctx;
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struct samba_kdc_entry *skdc_entry;
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krb5_error_code ret;
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kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
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struct samba_kdc_db_context);
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skdc_entry = talloc_get_type_abort(entry->context,
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struct samba_kdc_entry);
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ret = samba_kdc_check_s4u2proxy(context, kdc_db_ctx,
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skdc_entry,
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target_principal);
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switch (ret) {
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case 0:
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break;
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case SDB_ERR_WRONG_REALM:
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ret = HDB_ERR_WRONG_REALM;
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break;
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case SDB_ERR_NOENTRY:
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ret = HDB_ERR_NOENTRY;
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break;
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case SDB_ERR_NOT_FOUND_HERE:
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ret = HDB_ERR_NOT_FOUND_HERE;
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break;
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default:
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break;
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}
|
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return ret;
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}
|
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static krb5_error_code
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hdb_samba4_check_pkinit_ms_upn_match(krb5_context context, HDB *db,
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hdb_entry *entry,
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krb5_const_principal certificate_principal)
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{
|
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struct samba_kdc_db_context *kdc_db_ctx;
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struct samba_kdc_entry *skdc_entry;
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krb5_error_code ret;
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kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
|
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struct samba_kdc_db_context);
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skdc_entry = talloc_get_type_abort(entry->context,
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struct samba_kdc_entry);
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ret = samba_kdc_check_pkinit_ms_upn_match(context, kdc_db_ctx,
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skdc_entry,
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certificate_principal);
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switch (ret) {
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case 0:
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break;
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case SDB_ERR_WRONG_REALM:
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ret = HDB_ERR_WRONG_REALM;
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break;
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case SDB_ERR_NOENTRY:
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ret = HDB_ERR_NOENTRY;
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break;
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case SDB_ERR_NOT_FOUND_HERE:
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ret = HDB_ERR_NOT_FOUND_HERE;
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break;
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default:
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break;
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}
|
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|
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return ret;
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}
|
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|
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static krb5_error_code
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hdb_samba4_check_client_matches_target_service(krb5_context context, HDB *db,
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hdb_entry *client_entry,
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hdb_entry *server_target_entry)
|
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{
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struct samba_kdc_entry *skdc_client_entry
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= talloc_get_type_abort(client_entry->context,
|
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struct samba_kdc_entry);
|
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struct samba_kdc_entry *skdc_server_target_entry
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= talloc_get_type_abort(server_target_entry->context,
|
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struct samba_kdc_entry);
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|
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return samba_kdc_check_client_matches_target_service(context,
|
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skdc_client_entry,
|
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skdc_server_target_entry);
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}
|
|
|
|
static void reset_bad_password_netlogon(TALLOC_CTX *mem_ctx,
|
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struct samba_kdc_db_context *kdc_db_ctx,
|
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struct netr_SendToSamBase *send_to_sam)
|
|
{
|
|
struct dcerpc_binding_handle *irpc_handle;
|
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struct winbind_SendToSam req;
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|
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irpc_handle = irpc_binding_handle_by_name(mem_ctx, kdc_db_ctx->msg_ctx,
|
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"winbind_server",
|
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&ndr_table_winbind);
|
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|
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if (irpc_handle == NULL) {
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DEBUG(0, ("No winbind_server running!\n"));
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return;
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}
|
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|
|
req.in.message = *send_to_sam;
|
|
|
|
dcerpc_winbind_SendToSam_r_send(mem_ctx, kdc_db_ctx->ev_ctx,
|
|
irpc_handle, &req);
|
|
}
|
|
|
|
static krb5_error_code hdb_samba4_audit(krb5_context context,
|
|
HDB *db,
|
|
hdb_entry *entry,
|
|
hdb_request_t r)
|
|
{
|
|
struct samba_kdc_db_context *kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
|
|
struct samba_kdc_db_context);
|
|
struct ldb_dn *domain_dn = ldb_get_default_basedn(kdc_db_ctx->samdb);
|
|
uint64_t logon_id = generate_random_u64();
|
|
heim_object_t auth_details_obj = NULL;
|
|
const char *auth_details = NULL;
|
|
char *etype_str = NULL;
|
|
heim_object_t hdb_auth_status_obj = NULL;
|
|
int hdb_auth_status;
|
|
heim_object_t pa_type_obj = NULL;
|
|
const char *pa_type = NULL;
|
|
struct auth_usersupplied_info ui;
|
|
size_t sa_socklen = 0;
|
|
int final_ret = 0;
|
|
|
|
hdb_auth_status_obj = heim_audit_getkv((heim_svc_req_desc)r, KDC_REQUEST_KV_AUTH_EVENT);
|
|
if (hdb_auth_status_obj == NULL) {
|
|
/* No status code found, so just return. */
|
|
return 0;
|
|
}
|
|
|
|
hdb_auth_status = heim_number_get_int(hdb_auth_status_obj);
|
|
|
|
pa_type_obj = heim_audit_getkv((heim_svc_req_desc)r, "pa");
|
|
if (pa_type_obj != NULL) {
|
|
pa_type = heim_string_get_utf8(pa_type_obj);
|
|
}
|
|
|
|
auth_details_obj = heim_audit_getkv((heim_svc_req_desc)r, KDC_REQUEST_KV_PKINIT_CLIENT_CERT);
|
|
if (auth_details_obj != NULL) {
|
|
auth_details = heim_string_get_utf8(auth_details_obj);
|
|
} else {
|
|
auth_details_obj = heim_audit_getkv((heim_svc_req_desc)r, KDC_REQUEST_KV_GSS_INITIATOR);
|
|
if (auth_details_obj != NULL) {
|
|
auth_details = heim_string_get_utf8(auth_details_obj);
|
|
} else {
|
|
heim_object_t etype_obj = heim_audit_getkv((heim_svc_req_desc)r, KDC_REQUEST_KV_PA_ETYPE);
|
|
if (etype_obj != NULL) {
|
|
int etype = heim_number_get_int(etype_obj);
|
|
|
|
krb5_error_code ret = krb5_enctype_to_string(r->context, etype, &etype_str);
|
|
if (ret == 0) {
|
|
auth_details = etype_str;
|
|
} else {
|
|
auth_details = "unknown enctype";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Forcing this via the NTLM auth structure is not ideal, but
|
|
* it is the most practical option right now, and ensures the
|
|
* logs are consistent, even if some elements are always NULL.
|
|
*/
|
|
ui = (struct auth_usersupplied_info) {
|
|
.was_mapped = true,
|
|
.client = {
|
|
.account_name = r->cname,
|
|
.domain_name = NULL,
|
|
},
|
|
.service_description = "Kerberos KDC",
|
|
.auth_description = "Unknown Auth Description",
|
|
.password_type = auth_details,
|
|
.logon_id = logon_id
|
|
};
|
|
|
|
switch (r->addr->sa_family) {
|
|
case AF_INET:
|
|
sa_socklen = sizeof(struct sockaddr_in);
|
|
break;
|
|
#ifdef HAVE_IPV6
|
|
case AF_INET6:
|
|
sa_socklen = sizeof(struct sockaddr_in6);
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
switch (hdb_auth_status) {
|
|
case KDC_AUTH_EVENT_CLIENT_AUTHORIZED:
|
|
{
|
|
TALLOC_CTX *frame = talloc_stackframe();
|
|
struct samba_kdc_entry *p = talloc_get_type(entry->context,
|
|
struct samba_kdc_entry);
|
|
struct netr_SendToSamBase *send_to_sam = NULL;
|
|
|
|
/*
|
|
* TODO: We could log the AS-REQ authorization success here as
|
|
* well. However before we do that, we need to pass
|
|
* in the PAC here or re-calculate it.
|
|
*/
|
|
authsam_logon_success_accounting(kdc_db_ctx->samdb, p->msg,
|
|
domain_dn, true, &send_to_sam);
|
|
if (kdc_db_ctx->rodc && send_to_sam != NULL) {
|
|
reset_bad_password_netlogon(frame, kdc_db_ctx, send_to_sam);
|
|
}
|
|
talloc_free(frame);
|
|
}
|
|
FALL_THROUGH;
|
|
default:
|
|
{
|
|
TALLOC_CTX *frame = talloc_stackframe();
|
|
struct samba_kdc_entry *p = talloc_get_type(entry->context,
|
|
struct samba_kdc_entry);
|
|
struct dom_sid *sid
|
|
= samdb_result_dom_sid(frame, p->msg, "objectSid");
|
|
const char *account_name
|
|
= ldb_msg_find_attr_as_string(p->msg, "sAMAccountName", NULL);
|
|
const char *domain_name = lpcfg_sam_name(p->kdc_db_ctx->lp_ctx);
|
|
struct tsocket_address *remote_host;
|
|
const char *auth_description = NULL;
|
|
NTSTATUS status;
|
|
int ret;
|
|
bool rwdc_fallback = false;
|
|
|
|
ret = tsocket_address_bsd_from_sockaddr(frame, r->addr,
|
|
sa_socklen,
|
|
&remote_host);
|
|
if (ret != 0) {
|
|
ui.remote_host = NULL;
|
|
} else {
|
|
ui.remote_host = remote_host;
|
|
}
|
|
|
|
ui.mapped.account_name = account_name;
|
|
ui.mapped.domain_name = domain_name;
|
|
|
|
if (pa_type != NULL) {
|
|
auth_description = talloc_asprintf(frame,
|
|
"%s Pre-authentication",
|
|
pa_type);
|
|
if (auth_description == NULL) {
|
|
auth_description = pa_type;
|
|
}
|
|
} else {
|
|
auth_description = "Unknown Pre-authentication";
|
|
}
|
|
ui.auth_description = auth_description;
|
|
|
|
if (hdb_auth_status == KDC_AUTH_EVENT_CLIENT_AUTHORIZED) {
|
|
/* This is the final sucess */
|
|
status = NT_STATUS_OK;
|
|
} else if (hdb_auth_status == KDC_AUTH_EVENT_VALIDATED_LONG_TERM_KEY) {
|
|
/*
|
|
* This was only a pre-authentication success,
|
|
* but we didn't reach the final
|
|
* KDC_AUTH_EVENT_CLIENT_AUTHORIZED,
|
|
* so consult the error code.
|
|
*/
|
|
if (r->error_code == 0) {
|
|
DBG_ERR("ERROR: VALIDATED_LONG_TERM_KEY "
|
|
"with error=0 => INTERNAL_ERROR\n");
|
|
status = NT_STATUS_INTERNAL_ERROR;
|
|
final_ret = KRB5KRB_ERR_GENERIC;
|
|
r->error_code = final_ret;
|
|
} else {
|
|
status = krb5_to_nt_status(r->error_code);
|
|
}
|
|
} else if (hdb_auth_status == KDC_AUTH_EVENT_PREAUTH_SUCCEEDED) {
|
|
/*
|
|
* This was only a pre-authentication success,
|
|
* but we didn't reach the final
|
|
* KDC_AUTH_EVENT_CLIENT_AUTHORIZED,
|
|
* so consult the error code.
|
|
*/
|
|
if (r->error_code == 0) {
|
|
DBG_ERR("ERROR: PREAUTH_SUCCEEDED "
|
|
"with error=0 => INTERNAL_ERROR\n");
|
|
status = NT_STATUS_INTERNAL_ERROR;
|
|
final_ret = KRB5KRB_ERR_GENERIC;
|
|
r->error_code = final_ret;
|
|
} else {
|
|
status = krb5_to_nt_status(r->error_code);
|
|
}
|
|
} else if (hdb_auth_status == KDC_AUTH_EVENT_CLIENT_TIME_SKEW) {
|
|
status = NT_STATUS_TIME_DIFFERENCE_AT_DC;
|
|
} else if (hdb_auth_status == KDC_AUTH_EVENT_WRONG_LONG_TERM_KEY) {
|
|
authsam_update_bad_pwd_count(kdc_db_ctx->samdb, p->msg, domain_dn);
|
|
status = NT_STATUS_WRONG_PASSWORD;
|
|
rwdc_fallback = kdc_db_ctx->rodc;
|
|
} else if (hdb_auth_status == KDC_AUTH_EVENT_CLIENT_LOCKED_OUT) {
|
|
status = NT_STATUS_ACCOUNT_LOCKED_OUT;
|
|
rwdc_fallback = kdc_db_ctx->rodc;
|
|
} else if (hdb_auth_status == KDC_AUTH_EVENT_CLIENT_NAME_UNAUTHORIZED) {
|
|
if (pa_type != NULL && strncmp(pa_type, "PK-INIT", strlen("PK-INIT")) == 0) {
|
|
status = NT_STATUS_PKINIT_NAME_MISMATCH;
|
|
} else {
|
|
status = NT_STATUS_ACCOUNT_RESTRICTION;
|
|
}
|
|
rwdc_fallback = kdc_db_ctx->rodc;
|
|
} else if (hdb_auth_status == KDC_AUTH_EVENT_PREAUTH_FAILED) {
|
|
if (pa_type != NULL && strncmp(pa_type, "PK-INIT", strlen("PK-INIT")) == 0) {
|
|
status = NT_STATUS_PKINIT_FAILURE;
|
|
} else {
|
|
status = NT_STATUS_GENERIC_COMMAND_FAILED;
|
|
}
|
|
rwdc_fallback = kdc_db_ctx->rodc;
|
|
} else {
|
|
DBG_ERR("Unhandled hdb_auth_status=%d => INTERNAL_ERROR\n",
|
|
hdb_auth_status);
|
|
status = NT_STATUS_INTERNAL_ERROR;
|
|
final_ret = KRB5KRB_ERR_GENERIC;
|
|
r->error_code = final_ret;
|
|
}
|
|
|
|
if (rwdc_fallback) {
|
|
/*
|
|
* Forward the request to an RWDC in order
|
|
* to give an authoritative answer to the client.
|
|
*/
|
|
auth_description = talloc_asprintf(frame,
|
|
"%s,Forward-To-RWDC",
|
|
ui.auth_description);
|
|
if (auth_description != NULL) {
|
|
ui.auth_description = auth_description;
|
|
}
|
|
final_ret = HDB_ERR_NOT_FOUND_HERE;
|
|
}
|
|
|
|
log_authentication_event(kdc_db_ctx->msg_ctx,
|
|
kdc_db_ctx->lp_ctx,
|
|
&r->tv_start,
|
|
&ui,
|
|
status,
|
|
domain_name,
|
|
account_name,
|
|
sid);
|
|
if (final_ret == KRB5KRB_ERR_GENERIC && socket_wrapper_enabled()) {
|
|
/*
|
|
* If we're running under make test
|
|
* just panic
|
|
*/
|
|
DBG_ERR("Unexpected situation => PANIC\n");
|
|
smb_panic("hdb_samba4_audit: Unexpected situation");
|
|
}
|
|
TALLOC_FREE(frame);
|
|
break;
|
|
}
|
|
case KDC_AUTH_EVENT_CLIENT_UNKNOWN:
|
|
{
|
|
struct tsocket_address *remote_host;
|
|
int ret;
|
|
TALLOC_CTX *frame = talloc_stackframe();
|
|
ret = tsocket_address_bsd_from_sockaddr(frame, r->addr,
|
|
sa_socklen,
|
|
&remote_host);
|
|
if (ret != 0) {
|
|
ui.remote_host = NULL;
|
|
} else {
|
|
ui.remote_host = remote_host;
|
|
}
|
|
|
|
if (pa_type == NULL) {
|
|
pa_type = "AS-REQ";
|
|
}
|
|
|
|
ui.auth_description = pa_type;
|
|
|
|
/* Note this is not forwarded to an RWDC */
|
|
|
|
log_authentication_event(kdc_db_ctx->msg_ctx,
|
|
kdc_db_ctx->lp_ctx,
|
|
&r->tv_start,
|
|
&ui,
|
|
NT_STATUS_NO_SUCH_USER,
|
|
NULL, NULL,
|
|
NULL);
|
|
TALLOC_FREE(frame);
|
|
break;
|
|
}
|
|
}
|
|
|
|
free(etype_str);
|
|
|
|
return final_ret;
|
|
}
|
|
|
|
/* 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;
|
|
|
|
if (hdb_interface_version != HDB_INTERFACE_VERSION) {
|
|
krb5_set_error_message(context, EINVAL, "Heimdal HDB interface version mismatch between build-time and run-time libraries!");
|
|
return NT_STATUS_ERROR_DS_INCOMPATIBLE_VERSION;
|
|
}
|
|
|
|
*db = talloc_zero(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 = HDB_CAP_F_HANDLE_ENTERPRISE_PRINCIPAL;
|
|
|
|
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_free_entry_context = hdb_samba4_free_entry_context;
|
|
(*db)->hdb_fetch_kvno = hdb_samba4_fetch_kvno;
|
|
(*db)->hdb_store = hdb_samba4_store;
|
|
(*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_set_sync = hdb_samba4_set_sync;
|
|
(*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_audit = hdb_samba4_audit;
|
|
(*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_client_matches_target_service = hdb_samba4_check_client_matches_target_service;
|
|
|
|
return NT_STATUS_OK;
|
|
}
|