Files
heimdal/kdc/windc_plugin.h
Luke Howard 2087e07c1e kdc: update PAC hooks for Samba
Samba includes the user's long-term credentials (encrypted in the AS reply key)
to allow legacy authentication protocols such as NTLM to work even if the
pre-authentication mechanism replaced the reply key (as PKINIT does).

Samba also needs to know whether the client explicitly requested a PAC be
included (or excluded), in order to defer PAC exclusion until a service ticket
is issued (thereby avoiding a name binding attack if the user is renamed
between TGT and service ticket issuance).

References:

https://bugzilla.samba.org/show_bug.cgi?id=11441
https://bugzilla.samba.org/show_bug.cgi?id=14561

Closes: #864

Original authors:
 - Joseph Sutton <josephsutton@catalyst.net.nz>
 - Andrew Bartlett <abartlet@samba.org>
 - Stefan Metzmacher <metze@samba.org>
2021-12-14 13:51:53 +11:00

94 lines
3.5 KiB
C

/*
* Copyright (c) 2006 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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 the Institute 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 THE INSTITUTE 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 THE INSTITUTE 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.
*/
/* $Id$ */
#ifndef HEIMDAL_KDC_WINDC_PLUGIN_H
#define HEIMDAL_KDC_WINDC_PLUGIN_H 1
#include <krb5.h>
/*
* The PAC generate function should allocate a krb5_pac using
* krb5_pac_init and fill in the PAC structure for the principal using
* krb5_pac_add_buffer.
*
* The PAC verify function should verify the PAC KDC signatures by fetching
* the right KDC key and calling krb5_pac_verify() with that KDC key.
* Optionally, update the PAC buffers upon success.
*
* Check client access function check if the client is authorized.
*/
struct hdb_entry_ex;
typedef krb5_error_code
(KRB5_CALLCONV *krb5plugin_windc_pac_generate)(void *, krb5_context,
struct hdb_entry_ex *, /* client */
struct hdb_entry_ex *, /* server */
const krb5_keyblock *, /* pk_replykey */
const krb5_boolean *, /* pac_request */
krb5_pac *);
typedef krb5_error_code
(KRB5_CALLCONV *krb5plugin_windc_pac_verify)(void *, krb5_context,
const krb5_principal, /* new ticket client */
const krb5_principal, /* delegation proxy */
struct hdb_entry_ex *,/* client */
struct hdb_entry_ex *,/* server */
struct hdb_entry_ex *,/* krbtgt */
krb5_pac *);
typedef krb5_error_code
(KRB5_CALLCONV *krb5plugin_windc_client_access)(
void *, krb5_context,
krb5_kdc_configuration *config,
hdb_entry_ex *, const char *,
hdb_entry_ex *, const char *,
KDC_REQ *, METHOD_DATA *);
#define KRB5_WINDC_PLUGIN_MINOR 7
#define KRB5_WINDC_PLUGING_MINOR KRB5_WINDC_PLUGIN_MINOR
typedef struct krb5plugin_windc_ftable {
int minor_version;
krb5_error_code (KRB5_CALLCONV *init)(krb5_context, void **);
void (KRB5_CALLCONV *fini)(void *);
krb5plugin_windc_pac_generate pac_generate;
krb5plugin_windc_pac_verify pac_verify;
krb5plugin_windc_client_access client_access;
} krb5plugin_windc_ftable;
#endif /* HEIMDAL_KDC_WINDC_PLUGIN_H */