source4/kdc/pac-glue.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    PAC Glue between Samba and the KDC
   5
   6    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2009
   7    Copyright (C) Simo Sorce <idra@samba.org> 2010
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 #include "system/kerberos.h"
  25 #include "auth/kerberos/kerberos.h"
  26 #include <krb5/krb5.h>
  27
  28 #include "lib/util/data_blob.h"
  29 #include "lib/util/time.h"
  30 #include "libcli/util/ntstatus.h"
  31 #include "libcli/util/werror.h"
  32 #include "librpc/gen_ndr/auth.h"
  33 #include "kdc/samba_kdc.h"
  34
  35 enum samba_asserted_identity {
  36         SAMBA_ASSERTED_IDENTITY_IGNORE = 0,
  37         SAMBA_ASSERTED_IDENTITY_SERVICE,
  38         SAMBA_ASSERTED_IDENTITY_AUTHENTICATION_AUTHORITY,
  39 };
  40
  41 enum samba_claims_valid {
  42         SAMBA_CLAIMS_VALID_EXCLUDE = 0,
  43         SAMBA_CLAIMS_VALID_INCLUDE,
  44 };
  45
  46 enum samba_compounded_auth {
  47         SAMBA_COMPOUNDED_AUTH_EXCLUDE = 0,
  48         SAMBA_COMPOUNDED_AUTH_INCLUDE,
  49 };
  50
  51 enum {
  52         SAMBA_KDC_FLAG_PROTOCOL_TRANSITION    = 0x00000001,
  53         SAMBA_KDC_FLAG_CONSTRAINED_DELEGATION = 0x00000002,
  54         SAMBA_KDC_FLAG_KRBTGT_IN_DB           = 0x00000004,
  55         SAMBA_KDC_FLAG_KRBTGT_IS_TRUSTED      = 0x00000008,
  56         SAMBA_KDC_FLAG_SKIP_PAC_BUFFER        = 0x00000010,
  57         SAMBA_KDC_FLAG_DEVICE_KRBTGT_IS_TRUSTED = 0x00000020,
  58         SAMBA_KDC_FLAG_DELEGATED_PROXY_IS_TRUSTED = 0x00000040,
  59 };
  60
  61 krb5_error_code samba_kdc_encrypt_pac_credentials(krb5_context context,
  62                                                   const krb5_keyblock *pkreplykey,
  63                                                   const DATA_BLOB *cred_ndr_blob,
  64                                                   TALLOC_CTX *mem_ctx,
  65                                                   DATA_BLOB *cred_info_blob);
  66
  67 krb5_error_code samba_make_krb5_pac(krb5_context context,
  68                                     const DATA_BLOB *logon_blob,
  69                                     const DATA_BLOB *cred_blob,
  70                                     const DATA_BLOB *upn_blob,
  71                                     const DATA_BLOB *pac_attrs_blob,
  72                                     const DATA_BLOB *requester_sid_blob,
  73                                     const DATA_BLOB *deleg_blob,
  74                                     const DATA_BLOB *client_claims_blob,
  75                                     const DATA_BLOB *device_info_blob,
  76                                     const DATA_BLOB *device_claims_blob,
  77                                     krb5_pac pac);
  78
  79 bool samba_princ_needs_pac(const struct samba_kdc_entry *skdc_entry);
  80
  81 int samba_client_requested_pac(krb5_context context,
  82                                krb5_const_pac pac,
  83                                TALLOC_CTX *mem_ctx,
  84                                bool *requested_pac);
  85
  86 int samba_krbtgt_is_in_db(struct samba_kdc_entry *skdc_entry,
  87                           bool *is_in_db,
  88                           bool *is_trusted);
  89
  90 NTSTATUS samba_kdc_get_user_info_from_db(struct samba_kdc_entry *skdc_entry,
  91                                          const struct ldb_message *msg,
  92                                          const struct auth_user_info_dc **user_info_dc);
  93
  94 NTSTATUS samba_kdc_get_user_info_dc(TALLOC_CTX *mem_ctx,
  95                                     struct samba_kdc_entry *skdc_entry,
  96                                     enum samba_asserted_identity asserted_identity,
  97                                     enum samba_claims_valid claims_valid,
  98                                     enum samba_compounded_auth compounded_auth,
  99                                     struct auth_user_info_dc **user_info_dc_out);
 100
 101 krb5_error_code samba_kdc_map_policy_err(NTSTATUS nt_status);
 102
 103 NTSTATUS samba_kdc_check_client_access(struct samba_kdc_entry *kdc_entry,
 104                                        const char *client_name,
 105                                        const char *workstation,
 106                                        bool password_change);
 107
 108 krb5_error_code samba_kdc_validate_pac_blob(
 109                 krb5_context context,
 110                 const struct samba_kdc_entry *client_skdc_entry,
 111                 krb5_const_pac pac);
 112
 113 /*
 114  * In the RODC case, to confirm that the returned user is permitted to
 115  * be replicated to the KDC (krbgtgt_xxx user) represented by *rodc
 116  */
 117 struct dom_sid;
 118 WERROR samba_rodc_confirm_user_is_allowed(uint32_t num_sids,
 119                                           const struct dom_sid *object_sids,
 120                                           const struct samba_kdc_entry *rodc,
 121                                           const struct samba_kdc_entry *object);
 122
 123 krb5_error_code samba_kdc_verify_pac(TALLOC_CTX *mem_ctx,
 124                                      krb5_context context,
 125                                      uint32_t flags,
 126                                      struct samba_kdc_entry *client,
 127                                      const struct samba_kdc_entry *krbtgt,
 128                                      const struct samba_kdc_entry *device,
 129                                      const krb5_const_pac *device_pac,
 130                                      krb5_const_pac pac);
 131
 132 struct authn_audit_info;
 133 krb5_error_code samba_kdc_update_pac(TALLOC_CTX *mem_ctx,
 134                                      krb5_context context,
 135                                      struct ldb_context *samdb,
 136                                      struct loadparm_context *lp_ctx,
 137                                      uint32_t flags,
 138                                      const struct samba_kdc_entry *client_krbtgt,
 139                                      struct samba_kdc_entry *client,
 140                                      const krb5_const_principal server_principal,
 141                                      const struct samba_kdc_entry *server,
 142                                      const krb5_const_principal delegated_proxy_principal,
 143                                      struct samba_kdc_entry *delegated_proxy,
 144                                      const krb5_const_pac delegated_proxy_pac,
 145                                      const struct samba_kdc_entry *device_krbtgt,
 146                                      struct samba_kdc_entry *device,
 147                                      const krb5_const_pac device_pac,
 148                                      const krb5_const_pac old_pac,
 149                                      krb5_pac new_pac,
 150                                      struct authn_audit_info **server_audit_info_out,
 151                                      NTSTATUS *status_out);
 152
 153 NTSTATUS samba_kdc_get_logon_info_blob(TALLOC_CTX *mem_ctx,
 154                                        const struct auth_user_info_dc *user_info_dc,
 155                                        enum auth_group_inclusion group_inclusion,
 156                                        DATA_BLOB **_logon_info_blob);
 157 NTSTATUS samba_kdc_get_cred_ndr_blob(TALLOC_CTX *mem_ctx,
 158                                      const struct samba_kdc_entry *p,
 159                                      DATA_BLOB **_cred_ndr_blob);
 160 NTSTATUS samba_kdc_get_upn_info_blob(TALLOC_CTX *mem_ctx,
 161                                      const struct auth_user_info_dc *user_info_dc,
 162                                      DATA_BLOB **_upn_info_blob);
 163 NTSTATUS samba_kdc_get_pac_attrs_blob(TALLOC_CTX *mem_ctx,
 164                                       uint64_t pac_attributes,
 165                                       DATA_BLOB **_pac_attrs_blob);
 166 NTSTATUS samba_kdc_get_requester_sid_blob(TALLOC_CTX *mem_ctx,
 167                                           const struct auth_user_info_dc *user_info_dc,
 168                                           DATA_BLOB **_requester_sid_blob);
 169 NTSTATUS samba_kdc_get_claims_blob(TALLOC_CTX *mem_ctx,
 170                                    const struct samba_kdc_entry *p,
 171                                    const DATA_BLOB **_claims_blob);
 172
 173 krb5_error_code samba_kdc_allowed_to_authenticate_to(TALLOC_CTX *mem_ctx,
 174                                                      struct ldb_context *samdb,
 175                                                      struct loadparm_context *lp_ctx,
 176                                                      const struct samba_kdc_entry *client,
 177                                                      const struct auth_user_info_dc *client_info,
 178                                                      const struct samba_kdc_entry *server,
 179                                                      struct authn_audit_info **server_audit_info_out,
 180                                                      NTSTATUS *status_out);
 181
 182 krb5_error_code samba_kdc_check_device(TALLOC_CTX *mem_ctx,
 183                                        krb5_context context,
 184                                        struct ldb_context *samdb,
 185                                        struct loadparm_context *lp_ctx,
 186                                        struct samba_kdc_entry *device,
 187                                        krb5_const_pac device_pac,
 188                                        bool device_pac_is_trusted,
 189                                        const struct authn_kerberos_client_policy *client_policy,
 190                                        struct authn_audit_info **client_audit_info_out,
 191                                        NTSTATUS *status_out);