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/*
Unix SMB/CIFS implementation.
Samba Active Directory authentication policy utility functions
Copyright (C) Catalyst.Net Ltd 2023
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef KDC_AUTHN_POLICY_UTIL_H
#define KDC_AUTHN_POLICY_UTIL_H
#include "lib/replace/replace.h"
#include "auth/authn_policy.h"
#include "auth/session.h"
#include <talloc.h>
struct ldb_context;
struct loadparm_context;
struct ldb_message;
bool authn_policy_silos_and_policies_in_effect(struct ldb_context *samdb);
bool authn_policy_allowed_ntlm_network_auth_in_effect(struct ldb_context *samdb);
/*
* Look up the silo assigned to an account. If one exists, returns its details
* and whether it is enforced or not. ‘silo_attrs’ comprises the attributes to
* include in the search result, the relevant set of which can differ depending
* on the account’s objectClass.
*/
int authn_policy_get_assigned_silo(struct ldb_context *samdb,
TALLOC_CTX *mem_ctx,
const struct ldb_message *msg,
const char *const *silo_attrs,
const struct ldb_message **silo_msg_out,
bool *is_enforced);
struct auth_user_info_dc;
/* Authentication policies for Kerberos clients. */
/*
* Get the applicable authentication policy for an account acting as a Kerberos
* client.
*/
int authn_policy_kerberos_client(struct ldb_context *samdb,
TALLOC_CTX *mem_ctx,
const struct ldb_message *msg,
const struct authn_kerberos_client_policy **policy_out);
/*
* Perform an access check for the device with which the client is
* authenticating. ‘device_info’ must be talloc-allocated so that we can make a
* reference to it.
*/
NTSTATUS authn_policy_authenticate_from_device(TALLOC_CTX *mem_ctx,
struct ldb_context *samdb,
struct loadparm_context* lp_ctx,
const struct auth_user_info_dc *device_info,
const struct auth_claims auth_claims,
const struct authn_kerberos_client_policy *client_policy,
struct authn_audit_info **client_audit_info_out);
/* Return whether an authentication policy enforces device restrictions. */
bool authn_policy_device_restrictions_present(const struct authn_kerberos_client_policy *policy);
/* Authentication policies for NTLM clients. */
struct authn_ntlm_client_policy;
/*
* Get the applicable authentication policy for an account acting as an NTLM
* client.
*/
int authn_policy_ntlm_client(struct ldb_context *samdb,
TALLOC_CTX *mem_ctx,
const struct ldb_message *msg,
const struct authn_ntlm_client_policy **policy_out);
/* Check whether the client is allowed to authenticate using NTLM. */
NTSTATUS authn_policy_ntlm_apply_device_restriction(TALLOC_CTX *mem_ctx,
const struct authn_ntlm_client_policy *client_policy,
struct authn_audit_info **client_audit_info_out);
/* Authentication policies for servers. */
struct authn_server_policy;
/*
* Get the applicable authentication policy for an account acting as a
* server.
*/
int authn_policy_server(struct ldb_context *samdb,
TALLOC_CTX *mem_ctx,
const struct ldb_message *msg,
const struct authn_server_policy **policy_out);
/* Return whether an authentication policy enforces restrictions. */
bool authn_policy_restrictions_present(const struct authn_server_policy *policy);
enum authn_policy_auth_type {
AUTHN_POLICY_AUTH_TYPE_KERBEROS,
AUTHN_POLICY_AUTH_TYPE_NTLM,
};
struct authn_policy_flags {
bool force_compounded_authentication : 1;
};
/*
* Perform an access check for the client attempting to authenticate to the
* server. ‘user_info’ must be talloc-allocated so that we can make a reference
* to it.
*/
NTSTATUS authn_policy_authenticate_to_service(TALLOC_CTX *mem_ctx,
struct ldb_context *samdb,
struct loadparm_context* lp_ctx,
enum authn_policy_auth_type auth_type,
const struct auth_user_info_dc *user_info,
const struct auth_user_info_dc *device_info,
const struct auth_claims auth_claims,
const struct authn_server_policy *server_policy,
const struct authn_policy_flags authn_policy_flags,
struct authn_audit_info **server_audit_info_out);
/* Create a structure containing auditing information. */
NTSTATUS _authn_kerberos_client_policy_audit_info(
TALLOC_CTX *mem_ctx,
const struct authn_kerberos_client_policy *client_policy,
const struct auth_user_info_dc *client_info,
enum authn_audit_event event,
enum authn_audit_reason reason,
NTSTATUS policy_status,
const char *location,
struct authn_audit_info **audit_info_out);
/* Create a structure containing auditing information. */
#define authn_kerberos_client_policy_audit_info( \
mem_ctx, \
policy, \
client_info, \
event, \
reason, \
policy_status, \
audit_info_out) \
_authn_kerberos_client_policy_audit_info( \
mem_ctx, \
policy, \
client_info, \
event, \
reason, \
policy_status, \
__location__, \
audit_info_out)
/* Create a structure containing auditing information. */
NTSTATUS _authn_ntlm_client_policy_audit_info(
TALLOC_CTX *mem_ctx,
const struct authn_ntlm_client_policy *policy,
const struct auth_user_info_dc *client_info,
enum authn_audit_event event,
enum authn_audit_reason reason,
NTSTATUS policy_status,
const char *location,
struct authn_audit_info **audit_info_out);
/* Create a structure containing auditing information. */
#define authn_ntlm_client_policy_audit_info( \
mem_ctx, \
policy, \
client_info, \
event, \
reason, \
policy_status, \
audit_info_out) \
_authn_ntlm_client_policy_audit_info( \
mem_ctx, \
policy, \
client_info, \
event, \
reason, \
policy_status, \
__location__, \
audit_info_out)
/* Create a structure containing auditing information. */
NTSTATUS _authn_server_policy_audit_info(
TALLOC_CTX *mem_ctx,
const struct authn_server_policy *policy,
const struct auth_user_info_dc *client_info,
enum authn_audit_event event,
enum authn_audit_reason reason,
NTSTATUS policy_status,
const char *location,
struct authn_audit_info **audit_info_out);
/* Create a structure containing auditing information. */
#define authn_server_policy_audit_info( \
mem_ctx, \
policy, \
client_info, \
event, \
reason, \
policy_status, \
audit_info_out) \
_authn_server_policy_audit_info( \
mem_ctx, \
policy, \
client_info, \
event, \
reason, \
policy_status, \
__location__, \
audit_info_out)
#endif
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