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/*
Unix SMB/CIFS implementation.
PAC Glue between Samba and the KDC
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2009
Copyright (C) Simo Sorce <idra@samba.org> 2010
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/>.
*/
#include "system/kerberos.h"
#include "auth/kerberos/kerberos.h"
#include <krb5/krb5.h>
#include "lib/util/data_blob.h"
#include "lib/util/time.h"
#include "libcli/util/ntstatus.h"
#include "libcli/util/werror.h"
#include "librpc/gen_ndr/auth.h"
#include "kdc/samba_kdc.h"
#include "lib/krb5_wrap/krb5_samba.h"
#include "auth/session.h"
enum samba_asserted_identity {
SAMBA_ASSERTED_IDENTITY_IGNORE = 0,
SAMBA_ASSERTED_IDENTITY_SERVICE,
SAMBA_ASSERTED_IDENTITY_AUTHENTICATION_AUTHORITY,
};
enum {
SAMBA_KDC_FLAG_PROTOCOL_TRANSITION = 0x00000001,
SAMBA_KDC_FLAG_CONSTRAINED_DELEGATION = 0x00000002,
};
bool samba_kdc_entry_is_trust(const struct samba_kdc_entry *entry);
struct samba_kdc_entry_pac {
struct samba_kdc_entry *entry;
krb5_const_pac pac; /* NULL indicates that no PAC is present. */
bool is_from_trust : 1;
#ifndef HAVE_KRB5_PAC_IS_TRUSTED /* MIT */
bool pac_is_trusted : 1;
#endif /* HAVE_KRB5_PAC_IS_TRUSTED */
};
/*
* Return true if this entry has an associated PAC issued or signed by a KDC
* that our KDC trusts. We trust the main krbtgt account, but we don’t trust any
* RODC krbtgt besides ourselves.
*/
bool samba_krb5_pac_is_trusted(const struct samba_kdc_entry_pac pac);
#ifdef HAVE_KRB5_PAC_IS_TRUSTED /* Heimdal */
struct samba_kdc_entry_pac samba_kdc_entry_pac(krb5_const_pac pac,
struct samba_kdc_entry *entry,
bool is_from_trust);
#else /* MIT */
struct samba_kdc_entry_pac samba_kdc_entry_pac_from_trusted(krb5_const_pac pac,
struct samba_kdc_entry *entry,
bool is_from_trust,
bool is_trusted);
#endif /* HAVE_KRB5_PAC_IS_TRUSTED */
krb5_error_code samba_kdc_encrypt_pac_credentials(krb5_context context,
const krb5_keyblock *pkreplykey,
const DATA_BLOB *cred_ndr_blob,
TALLOC_CTX *mem_ctx,
DATA_BLOB *cred_info_blob);
krb5_error_code samba_make_krb5_pac(krb5_context context,
const DATA_BLOB *logon_blob,
const DATA_BLOB *cred_blob,
const DATA_BLOB *upn_blob,
const DATA_BLOB *pac_attrs_blob,
const DATA_BLOB *requester_sid_blob,
const DATA_BLOB *deleg_blob,
const DATA_BLOB *client_claims_blob,
const DATA_BLOB *device_info_blob,
const DATA_BLOB *device_claims_blob,
krb5_pac pac);
bool samba_princ_needs_pac(const struct samba_kdc_entry *skdc_entry);
krb5_error_code samba_krbtgt_is_in_db(const struct samba_kdc_entry *skdc_entry,
bool *is_in_db,
bool *is_trusted);
krb5_error_code samba_kdc_get_user_info_dc(TALLOC_CTX *mem_ctx,
krb5_context context,
struct ldb_context *samdb,
const struct samba_kdc_entry_pac entry,
const struct auth_user_info_dc **info_out,
const struct PAC_DOMAIN_GROUP_MEMBERSHIP **resource_groups_out);
krb5_error_code samba_kdc_get_user_info_from_db(TALLOC_CTX *mem_ctx,
struct ldb_context *samdb,
struct samba_kdc_entry *entry,
const struct ldb_message *msg,
const struct auth_user_info_dc **info_out);
krb5_error_code samba_kdc_map_policy_err(NTSTATUS nt_status);
NTSTATUS samba_kdc_check_client_access(struct samba_kdc_entry *kdc_entry,
const char *client_name,
const char *workstation,
bool password_change);
krb5_error_code samba_kdc_verify_pac(TALLOC_CTX *mem_ctx,
krb5_context context,
struct ldb_context *samdb,
uint32_t flags,
const struct samba_kdc_entry_pac client,
const struct samba_kdc_entry *krbtgt);
struct authn_audit_info;
krb5_error_code samba_kdc_update_pac(TALLOC_CTX *mem_ctx,
krb5_context context,
struct ldb_context *samdb,
struct loadparm_context *lp_ctx,
uint32_t flags,
const struct samba_kdc_entry_pac client,
const krb5_const_principal server_principal,
const struct samba_kdc_entry *server,
const krb5_const_principal delegated_proxy_principal,
const struct samba_kdc_entry_pac delegated_proxy,
const struct samba_kdc_entry_pac device,
krb5_pac new_pac,
struct authn_audit_info **server_audit_info_out,
NTSTATUS *status_out);
NTSTATUS samba_kdc_get_logon_info_blob(TALLOC_CTX *mem_ctx,
const struct auth_user_info_dc *user_info_dc,
enum auth_group_inclusion group_inclusion,
DATA_BLOB **_logon_info_blob);
NTSTATUS samba_kdc_get_cred_ndr_blob(TALLOC_CTX *mem_ctx,
const struct samba_kdc_entry *p,
DATA_BLOB **_cred_ndr_blob);
NTSTATUS samba_kdc_get_upn_info_blob(TALLOC_CTX *mem_ctx,
const struct auth_user_info_dc *user_info_dc,
DATA_BLOB **_upn_info_blob);
NTSTATUS samba_kdc_get_pac_attrs_blob(TALLOC_CTX *mem_ctx,
uint64_t pac_attributes,
DATA_BLOB **_pac_attrs_blob);
NTSTATUS samba_kdc_get_requester_sid_blob(TALLOC_CTX *mem_ctx,
const struct auth_user_info_dc *user_info_dc,
DATA_BLOB **_requester_sid_blob);
NTSTATUS samba_kdc_get_claims_blob(TALLOC_CTX *mem_ctx,
struct samba_kdc_entry *p,
const DATA_BLOB **_claims_blob);
krb5_error_code samba_kdc_allowed_to_authenticate_to(TALLOC_CTX *mem_ctx,
struct ldb_context *samdb,
struct loadparm_context *lp_ctx,
const struct samba_kdc_entry *client,
const struct auth_user_info_dc *client_info,
const struct auth_user_info_dc *device_info,
const struct auth_claims auth_claims,
const struct samba_kdc_entry *server,
struct authn_audit_info **server_audit_info_out,
NTSTATUS *status_out);
krb5_error_code samba_kdc_check_device(TALLOC_CTX *mem_ctx,
krb5_context context,
struct ldb_context *samdb,
struct loadparm_context *lp_ctx,
const struct samba_kdc_entry_pac device,
const struct authn_kerberos_client_policy *client_policy,
struct authn_audit_info **client_audit_info_out,
NTSTATUS *status_out);
krb5_error_code samba_kdc_get_claims_data(TALLOC_CTX *mem_ctx,
krb5_context context,
struct ldb_context *samdb,
struct samba_kdc_entry_pac entry,
struct claims_data **claims_data_out);
krb5_error_code samba_kdc_get_claims_data_from_pac(TALLOC_CTX *mem_ctx,
krb5_context context,
struct samba_kdc_entry_pac entry,
struct claims_data **claims_data_out);
krb5_error_code samba_kdc_get_claims_data_from_db(struct ldb_context *samdb,
struct samba_kdc_entry *entry,
struct claims_data **claims_data_out);
NTSTATUS samba_kdc_add_asserted_identity(enum samba_asserted_identity ai,
struct auth_user_info_dc *user_info_dc);
NTSTATUS samba_kdc_add_claims_valid(struct auth_user_info_dc *user_info_dc);
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