source4/auth/auth.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Standardised Authentication types
   4    Copyright (C) Andrew Bartlett   2001
   5    Copyright (C) Stefan Metzmacher 2005
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #ifndef _SAMBA_AUTH_H
  22 #define _SAMBA_AUTH_H
  23
  24 #include "librpc/gen_ndr/ndr_krb5pac.h"
  25 #include "librpc/gen_ndr/auth.h"
  26 #include "../auth/common_auth.h"
  27
  28 extern const char *krbtgt_attrs[];
  29 extern const char *server_attrs[];
  30 extern const char *user_attrs[];
  31
  32 union netr_Validation;
  33 struct netr_SamBaseInfo;
  34 struct netr_SamInfo3;
  35 struct loadparm_context;
  36
  37 /* modules can use the following to determine if the interface has changed
  38  * please increment the version number after each interface change
  39  * with a comment and maybe update struct auth_critical_sizes.
  40  */
  41 /* version 1 - version from samba 3.0 - metze */
  42 /* version 2 - initial samba4 version - metze */
  43 /* version 3 - subsequent samba4 version - abartlet */
  44 /* version 4 - subsequent samba4 version - metze */
  45 /* version 0 - till samba4 is stable - metze */
  46 #define AUTH4_INTERFACE_VERSION 0
  47
  48 #define AUTH_SESSION_INFO_DEFAULT_GROUPS     0x01 /* Add the user to the default world and network groups */
  49 #define AUTH_SESSION_INFO_AUTHENTICATED      0x02 /* Add the user to the 'authenticated users' group */
  50 #define AUTH_SESSION_INFO_SIMPLE_PRIVILEGES  0x04 /* Use a trivial map between users and privilages, rather than a DB */
  51 #define AUTH_SESSION_INFO_UNIX_TOKEN         0x08 /* The returned token must have the unix_token and unix_info elements provided */
  52
  53 struct auth_method_context;
  54 struct auth_check_password_request;
  55 struct auth4_context;
  56 struct auth_session_info;
  57 struct ldb_dn;
  58 struct smb_krb5_context;
  59
  60 struct auth_operations {
  61         const char *name;
  62
  63         /* If you are using this interface, then you are probably
  64          * getting something wrong.  This interface is only for
  65          * security=server, and makes a number of compromises to allow
  66          * that.  It is not compatible with being a PDC.  */
  67
  68         NTSTATUS (*get_challenge)(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, uint8_t chal[8]);
  69
  70         /* Given the user supplied info, check if this backend want to handle the password checking */
  71
  72         NTSTATUS (*want_check)(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx,
  73                                const struct auth_usersupplied_info *user_info);
  74
  75         /* Given the user supplied info, check a password */
  76
  77         NTSTATUS (*check_password)(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx,
  78                                    const struct auth_usersupplied_info *user_info,
  79                                    struct auth_user_info_dc **interim_info);
  80
  81         /* Lookup a 'session info interim' return based only on the principal or DN */
  82         NTSTATUS (*get_user_info_dc_principal)(TALLOC_CTX *mem_ctx,
  83                                                        struct auth4_context *auth_context,
  84                                                        const char *principal,
  85                                                        struct ldb_dn *user_dn,
  86                                                        struct auth_user_info_dc **interim_info);
  87 };
  88
  89 struct auth_method_context {
  90         struct auth_method_context *prev, *next;
  91         struct auth4_context *auth_ctx;
  92         const struct auth_operations *ops;
  93         int depth;
  94         void *private_data;
  95 };
  96
  97 struct auth4_context {
  98         struct {
  99                 /* Who set this up in the first place? */
 100                 const char *set_by;
 101
 102                 bool may_be_modified;
 103
 104                 DATA_BLOB data;
 105         } challenge;
 106
 107         /* methods, in the order they should be called */
 108         struct auth_method_context *methods;
 109
 110         /* the event context to use for calls that can block */
 111         struct tevent_context *event_ctx;
 112
 113         /* the messaging context which can be used by backends */
 114         struct imessaging_context *msg_ctx;
 115
 116         /* loadparm context */
 117         struct loadparm_context *lp_ctx;
 118
 119         /* SAM database for this local machine - to fill in local groups, or to authenticate local NTLM users */
 120         struct ldb_context *sam_ctx;
 121
 122         NTSTATUS (*check_password)(struct auth4_context *auth_ctx,
 123                                    TALLOC_CTX *mem_ctx,
 124                                    const struct auth_usersupplied_info *user_info,
 125                                    struct auth_user_info_dc **user_info_dc);
 126
 127         NTSTATUS (*get_challenge)(struct auth4_context *auth_ctx, uint8_t chal[8]);
 128
 129         bool (*challenge_may_be_modified)(struct auth4_context *auth_ctx);
 130
 131         NTSTATUS (*set_challenge)(struct auth4_context *auth_ctx, const uint8_t chal[8], const char *set_by);
 132
 133         NTSTATUS (*generate_session_info)(TALLOC_CTX *mem_ctx,
 134                                           struct auth4_context *auth_context,
 135                                           struct auth_user_info_dc *user_info_dc,
 136                                           uint32_t session_info_flags,
 137                                           struct auth_session_info **session_info);
 138
 139         NTSTATUS (*generate_session_info_pac)(struct auth4_context *auth_ctx,
 140                                               TALLOC_CTX *mem_ctx_out,
 141                                               struct smb_krb5_context *smb_krb5_context,
 142                                               DATA_BLOB *pac_blob,
 143                                               const char *principal_name,
 144                                               const struct tsocket_address *remote_address,
 145                                               uint32_t session_info_flags,
 146                                               struct auth_session_info **session_info);
 147 };
 148
 149 /* this structure is used by backends to determine the size of some critical types */
 150 struct auth_critical_sizes {
 151         int interface_version;
 152         int sizeof_auth_operations;
 153         int sizeof_auth_methods;
 154         int sizeof_auth_context;
 155         int sizeof_auth_usersupplied_info;
 156         int sizeof_auth_user_info_dc;
 157 };
 158
 159  NTSTATUS encrypt_user_info(TALLOC_CTX *mem_ctx, struct auth4_context *auth_context,
 160                            enum auth_password_state to_state,
 161                            const struct auth_usersupplied_info *user_info_in,
 162                            const struct auth_usersupplied_info **user_info_encrypted);
 163
 164 struct wbc_context;
 165 #include "auth/session.h"
 166 #include "auth/unix_token_proto.h"
 167 #include "auth/system_session_proto.h"
 168 #include "libcli/security/security.h"
 169
 170 struct ldb_message;
 171 struct ldb_context;
 172 struct gensec_security;
 173 struct cli_credentials;
 174
 175 NTSTATUS auth_get_challenge(struct auth4_context *auth_ctx, uint8_t chal[8]);
 176 NTSTATUS authsam_account_ok(TALLOC_CTX *mem_ctx,
 177                             struct ldb_context *sam_ctx,
 178                             uint32_t logon_parameters,
 179                             struct ldb_dn *domain_dn,
 180                             struct ldb_message *msg,
 181                             const char *logon_workstation,
 182                             const char *name_for_logs,
 183                             bool allow_domain_trust,
 184                             bool password_change);
 185
 186 struct auth_session_info *system_session(struct loadparm_context *lp_ctx);
 187 NTSTATUS authsam_make_user_info_dc(TALLOC_CTX *mem_ctx, struct ldb_context *sam_ctx,
 188                                            const char *netbios_name,
 189                                            const char *domain_name,
 190                                            struct ldb_dn *domain_dn,
 191                                            struct ldb_message *msg,
 192                                            DATA_BLOB user_sess_key, DATA_BLOB lm_sess_key,
 193                                   struct auth_user_info_dc **_user_info_dc);
 194 NTSTATUS auth_system_session_info(TALLOC_CTX *parent_ctx,
 195                                            struct loadparm_context *lp_ctx,
 196                                            struct auth_session_info **_session_info) ;
 197
 198 NTSTATUS auth_context_create_methods(TALLOC_CTX *mem_ctx, const char **methods,
 199                                      struct tevent_context *ev,
 200                                      struct imessaging_context *msg,
 201                                      struct loadparm_context *lp_ctx,
 202                                      struct ldb_context *sam_ctx,
 203                                      struct auth4_context **auth_ctx);
 204 const char **auth_methods_from_lp(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx);
 205
 206 NTSTATUS auth_context_create(TALLOC_CTX *mem_ctx,
 207                              struct tevent_context *ev,
 208                              struct imessaging_context *msg,
 209                              struct loadparm_context *lp_ctx,
 210                              struct auth4_context **auth_ctx);
 211
 212 NTSTATUS auth_check_password(struct auth4_context *auth_ctx,
 213                              TALLOC_CTX *mem_ctx,
 214                              const struct auth_usersupplied_info *user_info,
 215                              struct auth_user_info_dc **user_info_dc);
 216 NTSTATUS auth4_init(void);
 217 NTSTATUS auth_register(const struct auth_operations *ops);
 218 NTSTATUS server_service_auth_init(void);
 219 NTSTATUS authenticate_username_pw(TALLOC_CTX *mem_ctx,
 220                                   struct tevent_context *ev,
 221                                   struct imessaging_context *msg,
 222                                   struct loadparm_context *lp_ctx,
 223                                   const char *nt4_domain,
 224                                   const char *nt4_username,
 225                                   const char *password,
 226                                   const uint32_t logon_parameters,
 227                                   struct auth_session_info **session_info);
 228
 229 struct tevent_req *auth_check_password_send(TALLOC_CTX *mem_ctx,
 230                                             struct tevent_context *ev,
 231                                             struct auth4_context *auth_ctx,
 232                                             const struct auth_usersupplied_info *user_info);
 233 NTSTATUS auth_check_password_recv(struct tevent_req *req,
 234                                   TALLOC_CTX *mem_ctx,
 235                                   struct auth_user_info_dc **user_info_dc);
 236
 237 bool auth_challenge_may_be_modified(struct auth4_context *auth_ctx);
 238 NTSTATUS auth_context_set_challenge(struct auth4_context *auth_ctx, const uint8_t chal[8], const char *set_by);
 239
 240 NTSTATUS auth_get_user_info_dc_principal(TALLOC_CTX *mem_ctx,
 241                                         struct auth4_context *auth_ctx,
 242                                         const char *principal,
 243                                         struct ldb_dn *user_dn,
 244                                         struct auth_user_info_dc **user_info_dc);
 245
 246 NTSTATUS samba_server_gensec_start(TALLOC_CTX *mem_ctx,
 247                                    struct tevent_context *event_ctx,
 248                                    struct imessaging_context *msg_ctx,
 249                                    struct loadparm_context *lp_ctx,
 250                                    struct cli_credentials *server_credentials,
 251                                    const char *target_service,
 252                                    struct gensec_security **gensec_context);
 253
 254 #endif /* _SMBAUTH_H_ */