source4/libcli/auth/gensec_ntlmssp.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    dcerpc authentication operations
   5
   6    Copyright (C) Andrew Tridgell 2003
   7    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004
   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 2 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    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #include "includes.h"
  25 #include "auth/auth.h"
  26
  27 struct gensec_ntlmssp_state {
  28         struct auth_context *auth_context;
  29         struct auth_serversupplied_info *server_info;
  30         struct ntlmssp_state *ntlmssp_state;
  31         uint32 have_features;
  32 };
  33
  34
  35 /**
  36  * Return the challenge as determined by the authentication subsystem
  37  * @return an 8 byte random challenge
  38  */
  39
  40 static const uint8_t *auth_ntlmssp_get_challenge(const struct ntlmssp_state *ntlmssp_state)
  41 {
  42         struct gensec_ntlmssp_state *gensec_ntlmssp_state = ntlmssp_state->auth_context;
  43
  44         return gensec_ntlmssp_state->auth_context->get_ntlm_challenge(gensec_ntlmssp_state->auth_context);
  45 }
  46
  47 /**
  48  * Some authentication methods 'fix' the challenge, so we may not be able to set it
  49  *
  50  * @return If the effective challenge used by the auth subsystem may be modified
  51  */
  52 static BOOL auth_ntlmssp_may_set_challenge(const struct ntlmssp_state *ntlmssp_state)
  53 {
  54         struct gensec_ntlmssp_state *gensec_ntlmssp_state = ntlmssp_state->auth_context;
  55
  56         return gensec_ntlmssp_state->auth_context->challenge_may_be_modified;
  57 }
  58
  59 /**
  60  * NTLM2 authentication modifies the effective challenge,
  61  * @param challenge The new challenge value
  62  */
  63 static NTSTATUS auth_ntlmssp_set_challenge(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *challenge)
  64 {
  65         struct gensec_ntlmssp_state *gensec_ntlmssp_state = ntlmssp_state->auth_context;
  66         struct auth_context *auth_context = gensec_ntlmssp_state->auth_context;
  67
  68         SMB_ASSERT(challenge->length == 8);
  69
  70         auth_context->challenge = data_blob_talloc(auth_context,
  71                                                    challenge->data, challenge->length);
  72
  73         auth_context->challenge_set_by = "NTLMSSP callback (NTLM2)";
  74
  75         DEBUG(5, ("auth_context challenge set by %s\n", auth_context->challenge_set_by));
  76         DEBUG(5, ("challenge is: \n"));
  77         dump_data(5, auth_context->challenge.data, auth_context->challenge.length);
  78         return NT_STATUS_OK;
  79 }
  80
  81 /**
  82  * Check the password on an NTLMSSP login.
  83  *
  84  * Return the session keys used on the connection.
  85  */
  86
  87 static NTSTATUS auth_ntlmssp_check_password(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
  88 {
  89         struct gensec_ntlmssp_state *gensec_ntlmssp_state = ntlmssp_state->auth_context;
  90         struct auth_usersupplied_info *user_info = NULL;
  91         NTSTATUS nt_status;
  92
  93 #if 0
  94         /* the client has given us its machine name (which we otherwise would not get on port 445).
  95            we need to possibly reload smb.conf if smb.conf includes depend on the machine name */
  96
  97         set_remote_machine_name(gensec_ntlmssp_state->ntlmssp_state->workstation, True);
  98
  99         /* setup the string used by %U */
 100         /* sub_set_smb_name checks for weird internally */
 101         sub_set_smb_name(gensec_ntlmssp_state->ntlmssp_state->user);
 102
 103         reload_services(True);
 104
 105 #endif
 106         nt_status = make_user_info_map(ntlmssp_state,
 107                                        &user_info,
 108                                        gensec_ntlmssp_state->ntlmssp_state->user,
 109                                        gensec_ntlmssp_state->ntlmssp_state->domain,
 110                                        gensec_ntlmssp_state->ntlmssp_state->workstation,
 111                                        gensec_ntlmssp_state->ntlmssp_state->lm_resp.data ? &gensec_ntlmssp_state->ntlmssp_state->lm_resp : NULL,
 112                                        gensec_ntlmssp_state->ntlmssp_state->nt_resp.data ? &gensec_ntlmssp_state->ntlmssp_state->nt_resp : NULL,
 113                                        NULL, NULL, NULL,
 114                                        True);
 115
 116         if (!NT_STATUS_IS_OK(nt_status)) {
 117                 return nt_status;
 118         }
 119
 120         nt_status = gensec_ntlmssp_state->
 121                 auth_context->check_ntlm_password(gensec_ntlmssp_state->auth_context,
 122                                                   user_info,
 123                                                   gensec_ntlmssp_state,
 124                                                   &gensec_ntlmssp_state->server_info);
 125
 126         free_user_info(&user_info);
 127
 128         if (!NT_STATUS_IS_OK(nt_status)) {
 129                 return nt_status;
 130         }
 131         if (gensec_ntlmssp_state->server_info->user_session_key.length) {
 132                 DEBUG(10, ("Got NT session key of length %u\n", gensec_ntlmssp_state->server_info->user_session_key.length));
 133                 *user_session_key = data_blob_talloc(ntlmssp_state,
 134                                                    gensec_ntlmssp_state->server_info->user_session_key.data,
 135                                                    gensec_ntlmssp_state->server_info->user_session_key.length);
 136         }
 137         if (gensec_ntlmssp_state->server_info->lm_session_key.length) {
 138                 DEBUG(10, ("Got LM session key of length %u\n", gensec_ntlmssp_state->server_info->lm_session_key.length));
 139                 *lm_session_key = data_blob_talloc(ntlmssp_state,
 140                                                    gensec_ntlmssp_state->server_info->lm_session_key.data,
 141                                                    gensec_ntlmssp_state->server_info->lm_session_key.length);
 142         }
 143         return nt_status;
 144 }
 145
 146 static int gensec_ntlmssp_destroy(void *ptr)
 147 {
 148         struct gensec_ntlmssp_state *gensec_ntlmssp_state = ptr;
 149
 150         if (gensec_ntlmssp_state->ntlmssp_state) {
 151                 ntlmssp_end(&gensec_ntlmssp_state->ntlmssp_state);
 152         }
 153
 154         if (gensec_ntlmssp_state->auth_context) {
 155                 free_auth_context(&gensec_ntlmssp_state->auth_context);
 156         }
 157         if (gensec_ntlmssp_state->server_info) {
 158                 free_server_info(&gensec_ntlmssp_state->server_info);
 159         }
 160         return 0;
 161 }
 162
 163 static NTSTATUS gensec_ntlmssp_start(struct gensec_security *gensec_security)
 164 {
 165         struct gensec_ntlmssp_state *gensec_ntlmssp_state;
 166
 167         gensec_ntlmssp_state = talloc_p(gensec_security, struct gensec_ntlmssp_state);
 168         if (!gensec_ntlmssp_state) {
 169                 return NT_STATUS_NO_MEMORY;
 170         }
 171
 172         gensec_ntlmssp_state->ntlmssp_state = NULL;
 173         gensec_ntlmssp_state->auth_context = NULL;
 174         gensec_ntlmssp_state->server_info = NULL;
 175         gensec_ntlmssp_state->have_features = 0;
 176
 177         talloc_set_destructor(gensec_ntlmssp_state, gensec_ntlmssp_destroy);
 178
 179         gensec_security->private_data = gensec_ntlmssp_state;
 180         return NT_STATUS_OK;
 181 }
 182
 183 static NTSTATUS gensec_ntlmssp_server_start(struct gensec_security *gensec_security)
 184 {
 185         NTSTATUS nt_status;
 186         NTSTATUS status;
 187         struct ntlmssp_state *ntlmssp_state;
 188         struct gensec_ntlmssp_state *gensec_ntlmssp_state;
 189
 190         status = gensec_ntlmssp_start(gensec_security);
 191         if (!NT_STATUS_IS_OK(status)) {
 192                 return status;
 193         }
 194
 195         gensec_ntlmssp_state = gensec_security->private_data;
 196
 197         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_server_start(gensec_ntlmssp_state,
 198                                                               &gensec_ntlmssp_state->ntlmssp_state))) {
 199                 return nt_status;
 200         }
 201
 202         if (gensec_security->want_features & GENSEC_FEATURE_SIGN) {
 203                 gensec_ntlmssp_state->ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
 204         }
 205         if (gensec_security->want_features & GENSEC_FEATURE_SEAL) {
 206                 gensec_ntlmssp_state->ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL;
 207         }
 208
 209         ntlmssp_state = gensec_ntlmssp_state->ntlmssp_state;
 210         nt_status = make_auth_context_subsystem(gensec_ntlmssp_state, &gensec_ntlmssp_state->auth_context);
 211         if (!NT_STATUS_IS_OK(nt_status)) {
 212                 return nt_status;
 213         }
 214
 215         ntlmssp_state->auth_context = gensec_ntlmssp_state;
 216         ntlmssp_state->get_challenge = auth_ntlmssp_get_challenge;
 217         ntlmssp_state->may_set_challenge = auth_ntlmssp_may_set_challenge;
 218         ntlmssp_state->set_challenge = auth_ntlmssp_set_challenge;
 219         ntlmssp_state->check_password = auth_ntlmssp_check_password;
 220         ntlmssp_state->server_role = lp_server_role();
 221
 222         return NT_STATUS_OK;
 223 }
 224
 225 static NTSTATUS gensec_ntlmssp_client_start(struct gensec_security *gensec_security)
 226 {
 227         struct gensec_ntlmssp_state *gensec_ntlmssp_state;
 228         char *password = NULL;
 229
 230         NTSTATUS status;
 231         status = gensec_ntlmssp_start(gensec_security);
 232         if (!NT_STATUS_IS_OK(status)) {
 233                 return status;
 234         }
 235
 236         gensec_ntlmssp_state = gensec_security->private_data;
 237         status = ntlmssp_client_start(gensec_ntlmssp_state,
 238                                       &gensec_ntlmssp_state->ntlmssp_state);
 239         if (!NT_STATUS_IS_OK(status)) {
 240                 return status;
 241         }
 242
 243         if (gensec_security->want_features & GENSEC_FEATURE_SESSION_KEY) {
 244                 /*
 245                  * We need to set this to allow a later SetPassword
 246                  * via the SAMR pipe to succeed. Strange.... We could
 247                  * also add  NTLMSSP_NEGOTIATE_SEAL here. JRA.
 248                  *
 249                  * Without this, Windows will not create the master key
 250                  * that it thinks is only used for NTLMSSP signing and
 251                  * sealing.  (It is actually pulled out and used directly)
 252                  */
 253                 gensec_ntlmssp_state->ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
 254         }
 255         if (gensec_security->want_features & GENSEC_FEATURE_SIGN) {
 256                 gensec_ntlmssp_state->ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
 257         }
 258         if (gensec_security->want_features & GENSEC_FEATURE_SEAL) {
 259                 gensec_ntlmssp_state->ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL;
 260         }
 261
 262         status = ntlmssp_set_domain(gensec_ntlmssp_state->ntlmssp_state,
 263                                     gensec_security->user.domain);
 264         if (!NT_STATUS_IS_OK(status)) {
 265                 return status;
 266         }
 267
 268         status = ntlmssp_set_username(gensec_ntlmssp_state->ntlmssp_state,
 269                                       gensec_security->user.name);
 270         if (!NT_STATUS_IS_OK(status)) {
 271                 return status;
 272         }
 273
 274         if (gensec_security->user.name) {
 275                 status = gensec_get_password(gensec_security, gensec_ntlmssp_state, &password);
 276                 if (!NT_STATUS_IS_OK(status)) {
 277                         return status;
 278                 }
 279         }
 280
 281         if (password) {
 282                 status = ntlmssp_set_password(gensec_ntlmssp_state->ntlmssp_state,
 283                                               password);
 284                 if (!NT_STATUS_IS_OK(status)) {
 285                         return status;
 286                 }
 287         }
 288
 289         gensec_security->private_data = gensec_ntlmssp_state;
 290
 291         return status;
 292 }
 293
 294 /*
 295   wrappers for the ntlmssp_*() functions
 296 */
 297 static NTSTATUS gensec_ntlmssp_unseal_packet(struct gensec_security *gensec_security,
 298                                              TALLOC_CTX *mem_ctx,
 299                                              uint8_t *data, size_t length,
 300                                              const uint8_t *whole_pdu, size_t pdu_length,
 301                                              DATA_BLOB *sig)
 302 {
 303         struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
 304
 305         return ntlmssp_unseal_packet(gensec_ntlmssp_state->ntlmssp_state, mem_ctx, data, length, whole_pdu, pdu_length, sig);
 306 }
 307
 308 static NTSTATUS gensec_ntlmssp_check_packet(struct gensec_security *gensec_security,
 309                                             TALLOC_CTX *mem_ctx,
 310                                             const uint8_t *data, size_t length,
 311                                             const uint8_t *whole_pdu, size_t pdu_length,
 312                                             const DATA_BLOB *sig)
 313 {
 314         struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
 315
 316         return ntlmssp_check_packet(gensec_ntlmssp_state->ntlmssp_state, mem_ctx, data, length, whole_pdu, pdu_length, sig);
 317 }
 318
 319 static NTSTATUS gensec_ntlmssp_seal_packet(struct gensec_security *gensec_security,
 320                                            TALLOC_CTX *mem_ctx,
 321                                            uint8_t *data, size_t length,
 322                                            const uint8_t *whole_pdu, size_t pdu_length,
 323                                            DATA_BLOB *sig)
 324 {
 325         struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
 326
 327         return ntlmssp_seal_packet(gensec_ntlmssp_state->ntlmssp_state, mem_ctx, data, length, whole_pdu, pdu_length, sig);
 328 }
 329
 330 static NTSTATUS gensec_ntlmssp_sign_packet(struct gensec_security *gensec_security,
 331                                            TALLOC_CTX *mem_ctx,
 332                                            const uint8_t *data, size_t length,
 333                                            const uint8_t *whole_pdu, size_t pdu_length,
 334                                            DATA_BLOB *sig)
 335 {
 336         struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
 337
 338         return ntlmssp_sign_packet(gensec_ntlmssp_state->ntlmssp_state, mem_ctx, data, length, whole_pdu, pdu_length, sig);
 339 }
 340
 341 static size_t gensec_ntlmssp_sig_size(struct gensec_security *gensec_security)
 342 {
 343         return NTLMSSP_SIG_SIZE;
 344 }
 345
 346 static NTSTATUS gensec_ntlmssp_wrap(struct gensec_security *gensec_security,
 347                                     TALLOC_CTX *mem_ctx,
 348                                     const DATA_BLOB *in,
 349                                     DATA_BLOB *out)
 350 {
 351         struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
 352         DATA_BLOB sig;
 353         NTSTATUS nt_status;
 354
 355         if (gensec_ntlmssp_state->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
 356
 357                 *out = data_blob_talloc(mem_ctx, NULL, in->length + NTLMSSP_SIG_SIZE);
 358                 memcpy(out->data + NTLMSSP_SIG_SIZE, in->data, in->length);
 359
 360                 nt_status = ntlmssp_seal_packet(gensec_ntlmssp_state->ntlmssp_state, mem_ctx,
 361                                                 out->data + NTLMSSP_SIG_SIZE,
 362                                                 out->length - NTLMSSP_SIG_SIZE,
 363                                                 out->data + NTLMSSP_SIG_SIZE,
 364                                                 out->length - NTLMSSP_SIG_SIZE,
 365                                                 &sig);
 366
 367                 if (NT_STATUS_IS_OK(nt_status)) {
 368                         memcpy(out->data, sig.data, NTLMSSP_SIG_SIZE);
 369                 }
 370                 return nt_status;
 371
 372         } else if ((gensec_ntlmssp_state->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
 373                    || (gensec_ntlmssp_state->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) {
 374
 375                 *out = data_blob_talloc(mem_ctx, NULL, in->length + NTLMSSP_SIG_SIZE);
 376                 memcpy(out->data + NTLMSSP_SIG_SIZE, in->data, in->length);
 377
 378                 nt_status = ntlmssp_sign_packet(gensec_ntlmssp_state->ntlmssp_state, mem_ctx,
 379                                                 out->data + NTLMSSP_SIG_SIZE,
 380                                                 out->length - NTLMSSP_SIG_SIZE,
 381                                                 out->data + NTLMSSP_SIG_SIZE,
 382                                                 out->length - NTLMSSP_SIG_SIZE,
 383                                                 &sig);
 384
 385                 if (NT_STATUS_IS_OK(nt_status)) {
 386                         memcpy(out->data, sig.data, NTLMSSP_SIG_SIZE);
 387                 }
 388                 return nt_status;
 389
 390         } else {
 391                 *out = *in;
 392                 return NT_STATUS_OK;
 393         }
 394 }
 395
 396
 397 static NTSTATUS gensec_ntlmssp_unwrap(struct gensec_security *gensec_security,
 398                                       TALLOC_CTX *mem_ctx,
 399                                       const DATA_BLOB *in,
 400                                       DATA_BLOB *out)
 401 {
 402         struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
 403         DATA_BLOB sig;
 404
 405         if (gensec_ntlmssp_state->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
 406                 if (in->length < NTLMSSP_SIG_SIZE) {
 407                         return NT_STATUS_INVALID_PARAMETER;
 408                 }
 409                 sig.data = in->data;
 410                 sig.length = NTLMSSP_SIG_SIZE;
 411
 412                 *out = data_blob_talloc(mem_ctx, in->data + NTLMSSP_SIG_SIZE, in->length - NTLMSSP_SIG_SIZE);
 413
 414                 return ntlmssp_unseal_packet(gensec_ntlmssp_state->ntlmssp_state, mem_ctx,
 415                                              out->data, out->length,
 416                                              out->data, out->length,
 417                                              &sig);
 418
 419         } else if ((gensec_ntlmssp_state->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
 420                    || (gensec_ntlmssp_state->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) {
 421                 if (in->length < NTLMSSP_SIG_SIZE) {
 422                         return NT_STATUS_INVALID_PARAMETER;
 423                 }
 424                 sig.data = in->data;
 425                 sig.length = NTLMSSP_SIG_SIZE;
 426
 427                 *out = data_blob_talloc(mem_ctx, in->data + NTLMSSP_SIG_SIZE, in->length - NTLMSSP_SIG_SIZE);
 428
 429                 return ntlmssp_check_packet(gensec_ntlmssp_state->ntlmssp_state, mem_ctx,
 430                                             out->data, out->length,
 431                                             out->data, out->length,
 432                                             &sig);
 433         } else {
 434                 *out = *in;
 435                 return NT_STATUS_OK;
 436         }
 437 }
 438
 439 static NTSTATUS gensec_ntlmssp_session_key(struct gensec_security *gensec_security,
 440                                            DATA_BLOB *session_key)
 441 {
 442         struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
 443
 444         return ntlmssp_session_key(gensec_ntlmssp_state->ntlmssp_state, session_key);
 445 }
 446
 447 /**
 448  * Next state function for the wrapped NTLMSSP state machine
 449  *
 450  * @param gensec_security GENSEC state, initialised to NTLMSSP
 451  * @param out_mem_ctx The TALLOC_CTX for *out to be allocated on
 452  * @param in The request, as a DATA_BLOB
 453  * @param out The reply, as an talloc()ed DATA_BLOB, on *out_mem_ctx
 454  * @return Error, MORE_PROCESSING_REQUIRED if a reply is sent,
 455  *                or NT_STATUS_OK if the user is authenticated.
 456  */
 457
 458 static NTSTATUS gensec_ntlmssp_update(struct gensec_security *gensec_security, TALLOC_CTX *out_mem_ctx,
 459                                       const DATA_BLOB in, DATA_BLOB *out)
 460 {
 461         struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
 462         NTSTATUS status;
 463
 464         status = ntlmssp_update(gensec_ntlmssp_state->ntlmssp_state, out_mem_ctx, in, out);
 465
 466         if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) && !NT_STATUS_IS_OK(status)) {
 467                 return status;
 468         }
 469
 470         gensec_ntlmssp_state->have_features = 0;
 471
 472         if (gensec_ntlmssp_state->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN) {
 473                 gensec_ntlmssp_state->have_features |= GENSEC_FEATURE_SIGN;
 474         }
 475
 476         if (gensec_ntlmssp_state->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
 477                 gensec_ntlmssp_state->have_features |= GENSEC_FEATURE_SEAL;
 478         }
 479
 480         if (gensec_ntlmssp_state->ntlmssp_state->session_key.data) {
 481                 gensec_ntlmssp_state->have_features |= GENSEC_FEATURE_SESSION_KEY;
 482         }
 483
 484         return status;
 485 }
 486
 487 /**
 488  * Return the credentials of a logged on user, including session keys
 489  * etc.
 490  *
 491  * Only valid after a successful authentication
 492  *
 493  * May only be called once per authentication.
 494  *
 495  */
 496
 497 static NTSTATUS gensec_ntlmssp_session_info(struct gensec_security *gensec_security,
 498                                             struct auth_session_info **session_info)
 499 {
 500         NTSTATUS nt_status;
 501         struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
 502         nt_status = make_session_info(gensec_ntlmssp_state, gensec_ntlmssp_state->server_info, session_info);
 503
 504         if (!NT_STATUS_IS_OK(nt_status)) {
 505                 return nt_status;
 506         }
 507
 508         (*session_info)->session_key = data_blob_talloc(*session_info,
 509                                                         gensec_ntlmssp_state->ntlmssp_state->session_key.data,
 510                                                         gensec_ntlmssp_state->ntlmssp_state->session_key.length);
 511
 512         (*session_info)->workstation = talloc_strdup(*session_info,
 513                                                      gensec_ntlmssp_state->ntlmssp_state->workstation);
 514
 515         return NT_STATUS_OK;
 516 }
 517
 518 static BOOL gensec_ntlmssp_have_feature(struct gensec_security *gensec_security,
 519                                         uint32 feature)
 520 {
 521         struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
 522         if (gensec_ntlmssp_state->have_features & feature) {
 523                 return True;
 524         }
 525
 526         return False;
 527 }
 528
 529 static const struct gensec_security_ops gensec_ntlmssp_security_ops = {
 530         .name           = "ntlmssp",
 531         .sasl_name      = "NTLM",
 532         .auth_type      = DCERPC_AUTH_TYPE_NTLMSSP,
 533         .oid            = GENSEC_OID_NTLMSSP,
 534         .client_start   = gensec_ntlmssp_client_start,
 535         .server_start   = gensec_ntlmssp_server_start,
 536         .update         = gensec_ntlmssp_update,
 537         .seal_packet    = gensec_ntlmssp_seal_packet,
 538         .sig_size       = gensec_ntlmssp_sig_size,
 539         .sign_packet    = gensec_ntlmssp_sign_packet,
 540         .check_packet   = gensec_ntlmssp_check_packet,
 541         .unseal_packet  = gensec_ntlmssp_unseal_packet,
 542         .wrap           = gensec_ntlmssp_wrap,
 543         .unwrap         = gensec_ntlmssp_unwrap,
 544         .session_key    = gensec_ntlmssp_session_key,
 545         .session_info   = gensec_ntlmssp_session_info,
 546         .have_feature   = gensec_ntlmssp_have_feature
 547 };
 548
 549
 550 NTSTATUS gensec_ntlmssp_init(void)
 551 {
 552         NTSTATUS ret;
 553         ret = gensec_register(&gensec_ntlmssp_security_ops);
 554         if (!NT_STATUS_IS_OK(ret)) {
 555                 DEBUG(0,("Failed to register '%s' gensec backend!\n",
 556                         gensec_ntlmssp_security_ops.name));
 557                 return ret;
 558         }
 559
 560         return ret;
 561 }