source3/libsmb/ntlmssp.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 3.0
   4    handle NLTMSSP, server side
   5
   6    Copyright (C) Andrew Tridgell      2001
   7    Copyright (C) Andrew Bartlett 2001-2003
   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
  26 /**
  27  * Print out the NTLMSSP flags for debugging
  28  * @param neg_flags The flags from the packet
  29  */
  30
  31 void debug_ntlmssp_flags(uint32 neg_flags)
  32 {
  33         DEBUG(3,("Got NTLMSSP neg_flags=0x%08x\n", neg_flags));
  34
  35         if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE)
  36                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_UNICODE\n"));
  37         if (neg_flags & NTLMSSP_NEGOTIATE_OEM)
  38                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_OEM\n"));
  39         if (neg_flags & NTLMSSP_REQUEST_TARGET)
  40                 DEBUGADD(4, ("  NTLMSSP_REQUEST_TARGET\n"));
  41         if (neg_flags & NTLMSSP_NEGOTIATE_SIGN)
  42                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_SIGN\n"));
  43         if (neg_flags & NTLMSSP_NEGOTIATE_SEAL)
  44                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_SEAL\n"));
  45         if (neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
  46                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_LM_KEY\n"));
  47         if (neg_flags & NTLMSSP_NEGOTIATE_NETWARE)
  48                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_NETWARE\n"));
  49         if (neg_flags & NTLMSSP_NEGOTIATE_NTLM)
  50                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_NTLM\n"));
  51         if (neg_flags & NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED)
  52                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED\n"));
  53         if (neg_flags & NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED)
  54                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED\n"));
  55         if (neg_flags & NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL)
  56                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL\n"));
  57         if (neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN)
  58                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_ALWAYS_SIGN\n"));
  59         if (neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
  60                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_NTLM2\n"));
  61         if (neg_flags & NTLMSSP_CHAL_TARGET_INFO)
  62                 DEBUGADD(4, ("  NTLMSSP_CHAL_TARGET_INFO\n"));
  63         if (neg_flags & NTLMSSP_NEGOTIATE_128)
  64                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_128\n"));
  65         if (neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH)
  66                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_KEY_EXCH\n"));
  67 }
  68
  69 /**
  70  * Default challenge generation code.
  71  *
  72  */
  73
  74 static const uint8 *get_challenge(struct ntlmssp_state *ntlmssp_state)
  75 {
  76         static uchar chal[8];
  77         generate_random_buffer(chal, sizeof(chal), False);
  78
  79         return chal;
  80 }
  81
  82 /**
  83  * Determine correct target name flags for reply, given server role
  84  * and negotiated flags
  85  *
  86  * @param ntlmssp_state NTLMSSP State
  87  * @param neg_flags The flags from the packet
  88  * @param chal_flags The flags to be set in the reply packet
  89  * @return The 'target name' string.
  90  */
  91
  92 static const char *ntlmssp_target_name(struct ntlmssp_state *ntlmssp_state,
  93                                        uint32 neg_flags, uint32 *chal_flags)
  94 {
  95         if (neg_flags & NTLMSSP_REQUEST_TARGET) {
  96                 *chal_flags |= NTLMSSP_CHAL_TARGET_INFO;
  97                 *chal_flags |= NTLMSSP_REQUEST_TARGET;
  98                 if (ntlmssp_state->server_role == ROLE_STANDALONE) {
  99                         *chal_flags |= NTLMSSP_TARGET_TYPE_SERVER;
 100                         return ntlmssp_state->get_global_myname();
 101                 } else {
 102                         *chal_flags |= NTLMSSP_TARGET_TYPE_DOMAIN;
 103                         return ntlmssp_state->get_domain();
 104                 };
 105         } else {
 106                 return "";
 107         }
 108 }
 109
 110 /**
 111  * Next state function for the Negotiate packet
 112  *
 113  * @param ntlmssp_state NTLMSSP State
 114  * @param request The request, as a DATA_BLOB
 115  * @param request The reply, as an allocated DATA_BLOB, caller to free.
 116  * @return Errors or MORE_PROCESSING_REQUIRED if a reply is sent.
 117  */
 118
 119 static NTSTATUS ntlmssp_server_negotiate(struct ntlmssp_state *ntlmssp_state,
 120                                          const DATA_BLOB request, DATA_BLOB *reply)
 121 {
 122         DATA_BLOB struct_blob;
 123         fstring dnsname, dnsdomname;
 124         uint32 neg_flags = 0;
 125         uint32 ntlmssp_command, chal_flags;
 126         char *cliname=NULL, *domname=NULL;
 127         const uint8 *cryptkey;
 128         const char *target_name;
 129
 130         /* parse the NTLMSSP packet */
 131 #if 0
 132         file_save("ntlmssp_negotiate.dat", request.data, request.length);
 133 #endif
 134
 135         if (request.length) {
 136                 if (!msrpc_parse(&request, "CddAA",
 137                                  "NTLMSSP",
 138                                  &ntlmssp_command,
 139                                  &neg_flags,
 140                                  &cliname,
 141                                  &domname)) {
 142                         DEBUG(1, ("ntlmssp_server_negotiate: failed to parse NTLMSSP:\n"));
 143                         dump_data(2, request.data, request.length);
 144                         return NT_STATUS_INVALID_PARAMETER;
 145                 }
 146
 147                 SAFE_FREE(cliname);
 148                 SAFE_FREE(domname);
 149
 150                 debug_ntlmssp_flags(neg_flags);
 151         }
 152
 153         cryptkey = ntlmssp_state->get_challenge(ntlmssp_state);
 154
 155         data_blob_free(&ntlmssp_state->chal);
 156         ntlmssp_state->chal = data_blob(cryptkey, 8);
 157
 158         /* Give them the challenge. For now, ignore neg_flags and just
 159            return the flags we want. Obviously this is not correct */
 160
 161         chal_flags =
 162                 NTLMSSP_NEGOTIATE_128 |
 163                 NTLMSSP_NEGOTIATE_NTLM;
 164
 165         if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE) {
 166                 chal_flags |= NTLMSSP_NEGOTIATE_UNICODE;
 167                 ntlmssp_state->unicode = True;
 168         } else {
 169                 chal_flags |= NTLMSSP_NEGOTIATE_OEM;
 170         }
 171
 172         target_name = ntlmssp_target_name(ntlmssp_state,
 173                                           neg_flags, &chal_flags);
 174
 175         /* This should be a 'netbios domain -> DNS domain' mapping */
 176         dnsdomname[0] = '\0';
 177         get_mydomname(dnsdomname);
 178         strlower(dnsdomname);
 179
 180         dnsname[0] = '\0';
 181         get_myfullname(dnsname);
 182         strlower(dnsname);
 183
 184         if (chal_flags & NTLMSSP_CHAL_TARGET_INFO)
 185         {
 186                 const char *target_name_dns = "";
 187                 if (chal_flags |= NTLMSSP_TARGET_TYPE_DOMAIN) {
 188                         target_name_dns = dnsdomname;
 189                 } else if (chal_flags |= NTLMSSP_TARGET_TYPE_SERVER) {
 190                         target_name_dns = dnsname;
 191                 }
 192
 193                 /* the numbers here are the string type flags */
 194                 msrpc_gen(&struct_blob, "aaaaa",
 195                           ntlmssp_state->unicode, NTLMSSP_NAME_TYPE_DOMAIN, target_name,
 196                           ntlmssp_state->unicode, NTLMSSP_NAME_TYPE_SERVER, ntlmssp_state->get_global_myname(),
 197                           ntlmssp_state->unicode, NTLMSSP_NAME_TYPE_DOMAIN_DNS, target_name_dns,
 198                           ntlmssp_state->unicode, NTLMSSP_NAME_TYPE_SERVER_DNS, dnsdomname,
 199                           ntlmssp_state->unicode, 0, "");
 200         } else {
 201                 struct_blob = data_blob(NULL, 0);
 202         }
 203
 204         {
 205                 const char *gen_string;
 206                 if (ntlmssp_state->unicode) {
 207                         gen_string = "CdUdbddB";
 208                 } else {
 209                         gen_string = "CdAdbddB";
 210                 }
 211
 212                 msrpc_gen(reply, gen_string,
 213                           "NTLMSSP",
 214                           NTLMSSP_CHALLENGE,
 215                           target_name,
 216                           chal_flags,
 217                           cryptkey, 8,
 218                           0, 0,
 219                           struct_blob.data, struct_blob.length);
 220         }
 221
 222         data_blob_free(&struct_blob);
 223
 224         ntlmssp_state->expected_state = NTLMSSP_AUTH;
 225
 226         return NT_STATUS_MORE_PROCESSING_REQUIRED;
 227 }
 228
 229 /**
 230  * Next state function for the Authenticate packet
 231  *
 232  * @param ntlmssp_state NTLMSSP State
 233  * @param request The request, as a DATA_BLOB
 234  * @param request The reply, as an allocated DATA_BLOB, caller to free.
 235  * @return Errors or NT_STATUS_OK.
 236  */
 237
 238 static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
 239                                     const DATA_BLOB request, DATA_BLOB *reply)
 240 {
 241         DATA_BLOB sess_key;
 242         uint32 ntlmssp_command, neg_flags;
 243         NTSTATUS nt_status;
 244
 245         const char *parse_string;
 246
 247         /* parse the NTLMSSP packet */
 248 #if 0
 249         file_save("ntlmssp_auth.dat", request.data, request.length);
 250 #endif
 251
 252         if (ntlmssp_state->unicode) {
 253                 parse_string = "CdBBUUUBd";
 254         } else {
 255                 parse_string = "CdBBAAABd";
 256         }
 257
 258         data_blob_free(&ntlmssp_state->lm_resp);
 259         data_blob_free(&ntlmssp_state->nt_resp);
 260
 261         SAFE_FREE(ntlmssp_state->user);
 262         SAFE_FREE(ntlmssp_state->domain);
 263         SAFE_FREE(ntlmssp_state->workstation);
 264
 265         /* now the NTLMSSP encoded auth hashes */
 266         if (!msrpc_parse(&request, parse_string,
 267                          "NTLMSSP",
 268                          &ntlmssp_command,
 269                          &ntlmssp_state->lm_resp,
 270                          &ntlmssp_state->nt_resp,
 271                          &ntlmssp_state->domain,
 272                          &ntlmssp_state->user,
 273                          &ntlmssp_state->workstation,
 274                          &sess_key,
 275                          &neg_flags)) {
 276                 DEBUG(1, ("ntlmssp_server_auth: failed to parse NTLMSSP:\n"));
 277                 dump_data(2, request.data, request.length);
 278                 return NT_STATUS_INVALID_PARAMETER;
 279         }
 280
 281         data_blob_free(&sess_key);
 282
 283         DEBUG(3,("Got user=[%s] domain=[%s] workstation=[%s] len1=%d len2=%d\n",
 284                  ntlmssp_state->user, ntlmssp_state->domain, ntlmssp_state->workstation, ntlmssp_state->lm_resp.length, ntlmssp_state->nt_resp.length));
 285
 286 #if 0
 287         file_save("nthash1.dat",  &ntlmssp_state->nt_resp.data,  &ntlmssp_state->nt_resp.length);
 288         file_save("lmhash1.dat",  &ntlmssp_state->lm_resp.data,  &ntlmssp_state->lm_resp.length);
 289 #endif
 290
 291         nt_status = ntlmssp_state->check_password(ntlmssp_state);
 292
 293         *reply = data_blob(NULL, 0);
 294
 295         return nt_status;
 296 }
 297
 298 /**
 299  * Create an NTLMSSP state machine
 300  *
 301  * @param ntlmssp_state NTLMSSP State, allocated by this function
 302  */
 303
 304 NTSTATUS ntlmssp_server_start(NTLMSSP_STATE **ntlmssp_state)
 305 {
 306         TALLOC_CTX *mem_ctx;
 307
 308         mem_ctx = talloc_init("NTLMSSP context");
 309
 310         *ntlmssp_state = talloc_zero(mem_ctx, sizeof(**ntlmssp_state));
 311         if (!*ntlmssp_state) {
 312                 DEBUG(0,("ntlmssp_server_start: talloc failed!\n"));
 313                 talloc_destroy(mem_ctx);
 314                 return NT_STATUS_NO_MEMORY;
 315         }
 316
 317         (*ntlmssp_state)->mem_ctx = mem_ctx;
 318         (*ntlmssp_state)->get_challenge = get_challenge;
 319
 320         (*ntlmssp_state)->get_global_myname = global_myname;
 321         (*ntlmssp_state)->get_domain = lp_workgroup;
 322         (*ntlmssp_state)->server_role = ROLE_DOMAIN_MEMBER; /* a good default */
 323
 324         (*ntlmssp_state)->expected_state = NTLMSSP_NEGOTIATE;
 325
 326         return NT_STATUS_OK;
 327 }
 328
 329 /**
 330  * End an NTLMSSP state machine
 331  *
 332  * @param ntlmssp_state NTLMSSP State, free()ed by this function
 333  */
 334
 335 NTSTATUS ntlmssp_server_end(NTLMSSP_STATE **ntlmssp_state)
 336 {
 337         TALLOC_CTX *mem_ctx = (*ntlmssp_state)->mem_ctx;
 338
 339         data_blob_free(&(*ntlmssp_state)->chal);
 340         data_blob_free(&(*ntlmssp_state)->lm_resp);
 341         data_blob_free(&(*ntlmssp_state)->nt_resp);
 342
 343         SAFE_FREE((*ntlmssp_state)->user);
 344         SAFE_FREE((*ntlmssp_state)->domain);
 345         SAFE_FREE((*ntlmssp_state)->workstation);
 346
 347         talloc_destroy(mem_ctx);
 348         *ntlmssp_state = NULL;
 349         return NT_STATUS_OK;
 350 }
 351
 352 /**
 353  * Next state function for the NTLMSSP state machine
 354  *
 355  * @param ntlmssp_state NTLMSSP State
 356  * @param request The request, as a DATA_BLOB
 357  * @param request The reply, as an allocated DATA_BLOB, caller to free.
 358  * @return Errors, NT_STATUS_MORE_PROCESSING_REQUIRED or NT_STATUS_OK.
 359  */
 360
 361 NTSTATUS ntlmssp_server_update(NTLMSSP_STATE *ntlmssp_state,
 362                                const DATA_BLOB request, DATA_BLOB *reply)
 363 {
 364         uint32 ntlmssp_command;
 365         *reply = data_blob(NULL, 0);
 366
 367         if (request.length) {
 368                 if (!msrpc_parse(&request, "Cd",
 369                                  "NTLMSSP",
 370                                  &ntlmssp_command)) {
 371                         return NT_STATUS_INVALID_PARAMETER;
 372                 }
 373         } else {
 374                 /* 'datagram' mode - no neg packet */
 375                 ntlmssp_command = NTLMSSP_NEGOTIATE;
 376         }
 377
 378         if (ntlmssp_command != ntlmssp_state->expected_state) {
 379                 DEBUG(1, ("got NTLMSSP command %u, expected %u\n", ntlmssp_command, ntlmssp_state->expected_state));
 380                 return NT_STATUS_INVALID_PARAMETER;
 381         }
 382
 383         if (ntlmssp_command == NTLMSSP_NEGOTIATE) {
 384                 return ntlmssp_server_negotiate(ntlmssp_state, request, reply);
 385         } else if (ntlmssp_command == NTLMSSP_AUTH) {
 386                 return ntlmssp_server_auth(ntlmssp_state, request, reply);
 387         } else {
 388                 DEBUG(1, ("unknown NTLMSSP command %u expected %u\n", ntlmssp_command, ntlmssp_state->expected_state));
 389                 return NT_STATUS_INVALID_PARAMETER;
 390         }
 391 }
 392
 393 /*********************************************************************
 394  Client side NTLMSSP
 395 *********************************************************************/
 396
 397 /**
 398  * Next state function for the Initial packet
 399  *
 400  * @param ntlmssp_state NTLMSSP State
 401  * @param request The request, as a DATA_BLOB.  reply.data must be NULL
 402  * @param request The reply, as an allocated DATA_BLOB, caller to free.
 403  * @return Errors or NT_STATUS_OK.
 404  */
 405
 406 static NTSTATUS ntlmssp_client_initial(struct ntlmssp_client_state *ntlmssp_state,
 407                                   DATA_BLOB reply, DATA_BLOB *next_request)
 408 {
 409         if (ntlmssp_state->unicode) {
 410                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_UNICODE;
 411         }
 412
 413         /* generate the ntlmssp negotiate packet */
 414         msrpc_gen(next_request, "CddAA",
 415                   "NTLMSSP",
 416                   NTLMSSP_NEGOTIATE,
 417                   ntlmssp_state->neg_flags,
 418                   ntlmssp_state->get_domain(),
 419                   ntlmssp_state->get_global_myname());
 420
 421         return NT_STATUS_MORE_PROCESSING_REQUIRED;
 422 }
 423
 424 /**
 425  * Next state function for the Challenge Packet.  Generate an auth packet.
 426  *
 427  * @param ntlmssp_state NTLMSSP State
 428  * @param request The request, as a DATA_BLOB.  reply.data must be NULL
 429  * @param request The reply, as an allocated DATA_BLOB, caller to free.
 430  * @return Errors or NT_STATUS_OK.
 431  */
 432
 433 static NTSTATUS ntlmssp_client_challenge(struct ntlmssp_client_state *ntlmssp_state,
 434                                          const DATA_BLOB reply, DATA_BLOB *next_request)
 435 {
 436         uint32 chal_flags, ntlmssp_command, unkn1, unkn2;
 437         DATA_BLOB server_domain_blob;
 438         DATA_BLOB challenge_blob;
 439         DATA_BLOB struct_blob;
 440         char *server_domain;
 441         const char *chal_parse_string;
 442         const char *auth_gen_string;
 443         DATA_BLOB lm_response = data_blob(NULL, 0);
 444         DATA_BLOB nt_response = data_blob(NULL, 0);
 445         DATA_BLOB session_key = data_blob(NULL, 0);
 446         uint8 datagram_sess_key[16];
 447
 448         generate_random_buffer(datagram_sess_key, sizeof(datagram_sess_key), False);
 449
 450         if (!msrpc_parse(&reply, "CdBd",
 451                          "NTLMSSP",
 452                          &ntlmssp_command,
 453                          &server_domain_blob,
 454                          &chal_flags)) {
 455                 DEBUG(0, ("Failed to parse the NTLMSSP Challenge\n"));
 456                 return NT_STATUS_INVALID_PARAMETER;
 457         }
 458
 459         data_blob_free(&server_domain_blob);
 460
 461         if (chal_flags & NTLMSSP_NEGOTIATE_UNICODE) {
 462                 chal_parse_string = "CdUdbddB";
 463                 auth_gen_string = "CdBBUUUBd";
 464                 ntlmssp_state->unicode = True;
 465                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_UNICODE;
 466                 ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_OEM;
 467         } else if (chal_flags & NTLMSSP_NEGOTIATE_OEM) {
 468                 chal_parse_string = "CdAdbddB";
 469                 auth_gen_string = "CdBBAAABd";
 470                 ntlmssp_state->unicode = False;
 471                 ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_UNICODE;
 472                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_OEM;
 473         } else {
 474                 return NT_STATUS_INVALID_PARAMETER;
 475         }
 476
 477         if (!msrpc_parse(&reply, chal_parse_string,
 478                          "NTLMSSP",
 479                          &ntlmssp_command,
 480                          &server_domain,
 481                          &chal_flags,
 482                          &challenge_blob, 8,
 483                          &unkn1, &unkn2,
 484                          &struct_blob)) {
 485                 DEBUG(0, ("Failed to parse the NTLMSSP Challenge\n"));
 486                 return NT_STATUS_INVALID_PARAMETER;
 487         }
 488
 489         SAFE_FREE(server_domain);
 490         data_blob_free(&struct_blob);
 491
 492         if (challenge_blob.length != 8) {
 493                 return NT_STATUS_INVALID_PARAMETER;
 494         }
 495
 496         if (ntlmssp_state->use_ntlmv2) {
 497
 498                 /* TODO: if the remote server is standalone, then we should replace 'domain'
 499                    with the server name as supplied above */
 500
 501                 if (!SMBNTLMv2encrypt(ntlmssp_state->user,
 502                                       ntlmssp_state->domain,
 503                                       ntlmssp_state->password, challenge_blob,
 504                                       &lm_response, &nt_response, &session_key)) {
 505                         data_blob_free(&challenge_blob);
 506                         return NT_STATUS_NO_MEMORY;
 507                 }
 508         } else {
 509                 uchar nt_hash[16];
 510                 E_md4hash(ntlmssp_state->password, nt_hash);
 511
 512                 /* non encrypted password supplied. Ignore ntpass. */
 513                 if (lp_client_lanman_auth()) {
 514                         lm_response = data_blob(NULL, 24);
 515                         SMBencrypt(ntlmssp_state->password,challenge_blob.data,
 516                                    lm_response.data);
 517                 }
 518
 519                 nt_response = data_blob(NULL, 24);
 520                 SMBNTencrypt(ntlmssp_state->password,challenge_blob.data,
 521                              nt_response.data);
 522                 session_key = data_blob(NULL, 16);
 523                 SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
 524         }
 525
 526         /* this generates the actual auth packet */
 527         if (!msrpc_gen(next_request, auth_gen_string,
 528                        "NTLMSSP",
 529                        NTLMSSP_AUTH,
 530                        lm_response.data, lm_response.length,
 531                        nt_response.data, nt_response.length,
 532                        ntlmssp_state->domain,
 533                        ntlmssp_state->user,
 534                        ntlmssp_state->get_global_myname(),
 535                        datagram_sess_key, 16,
 536                        ntlmssp_state->neg_flags)) {
 537
 538                 data_blob_free(&lm_response);
 539                 data_blob_free(&nt_response);
 540                 data_blob_free(&session_key);
 541                 return NT_STATUS_NO_MEMORY;
 542         }
 543
 544         data_blob_free(&ntlmssp_state->chal);
 545         data_blob_free(&ntlmssp_state->lm_resp);
 546         data_blob_free(&ntlmssp_state->nt_resp);
 547         data_blob_free(&ntlmssp_state->session_key);
 548
 549         ntlmssp_state->chal = challenge_blob;
 550         ntlmssp_state->lm_resp = lm_response;
 551         ntlmssp_state->nt_resp = nt_response;
 552         ntlmssp_state->session_key = session_key;
 553
 554         return NT_STATUS_MORE_PROCESSING_REQUIRED;
 555 }
 556
 557 NTSTATUS ntlmssp_client_start(NTLMSSP_CLIENT_STATE **ntlmssp_state)
 558 {
 559         TALLOC_CTX *mem_ctx;
 560
 561         mem_ctx = talloc_init("NTLMSSP Client context");
 562
 563         *ntlmssp_state = talloc_zero(mem_ctx, sizeof(**ntlmssp_state));
 564         if (!*ntlmssp_state) {
 565                 DEBUG(0,("ntlmssp_server_start: talloc failed!\n"));
 566                 talloc_destroy(mem_ctx);
 567                 return NT_STATUS_NO_MEMORY;
 568         }
 569
 570         (*ntlmssp_state)->mem_ctx = mem_ctx;
 571
 572         (*ntlmssp_state)->get_global_myname = global_myname;
 573         (*ntlmssp_state)->get_domain = lp_workgroup;
 574
 575         (*ntlmssp_state)->unicode = True;
 576
 577         (*ntlmssp_state)->neg_flags =
 578                 NTLMSSP_NEGOTIATE_128 |
 579                 NTLMSSP_NEGOTIATE_NTLM |
 580                 NTLMSSP_REQUEST_TARGET;
 581
 582         (*ntlmssp_state)->ref_count = 1;
 583
 584         return NT_STATUS_OK;
 585 }
 586
 587 NTSTATUS ntlmssp_client_end(NTLMSSP_CLIENT_STATE **ntlmssp_state)
 588 {
 589         TALLOC_CTX *mem_ctx = (*ntlmssp_state)->mem_ctx;
 590
 591         (*ntlmssp_state)->ref_count--;
 592
 593         if ((*ntlmssp_state)->ref_count == 0) {
 594                 data_blob_free(&(*ntlmssp_state)->chal);
 595                 data_blob_free(&(*ntlmssp_state)->lm_resp);
 596                 data_blob_free(&(*ntlmssp_state)->nt_resp);
 597                 data_blob_free(&(*ntlmssp_state)->session_key);
 598                 talloc_destroy(mem_ctx);
 599         }
 600
 601         *ntlmssp_state = NULL;
 602         return NT_STATUS_OK;
 603 }
 604
 605 NTSTATUS ntlmssp_client_update(NTLMSSP_CLIENT_STATE *ntlmssp_state,
 606                                DATA_BLOB reply, DATA_BLOB *next_request)
 607 {
 608         uint32 ntlmssp_command;
 609         *next_request = data_blob(NULL, 0);
 610
 611         if (!reply.length) {
 612                 return ntlmssp_client_initial(ntlmssp_state, reply, next_request);
 613         }
 614
 615         if (!msrpc_parse(&reply, "Cd",
 616                          "NTLMSSP",
 617                          &ntlmssp_command)) {
 618                 return NT_STATUS_INVALID_PARAMETER;
 619         }
 620
 621         if (ntlmssp_command == NTLMSSP_CHALLENGE) {
 622                 return ntlmssp_client_challenge(ntlmssp_state, reply, next_request);
 623         }
 624         return NT_STATUS_INVALID_PARAMETER;
 625 }
 626
 627 NTSTATUS ntlmssp_set_username(NTLMSSP_CLIENT_STATE *ntlmssp_state, const char *user)
 628 {
 629         ntlmssp_state->user = talloc_strdup(ntlmssp_state->mem_ctx, user);
 630         if (!ntlmssp_state->user) {
 631                 return NT_STATUS_NO_MEMORY;
 632         }
 633         return NT_STATUS_OK;
 634 }
 635
 636 NTSTATUS ntlmssp_set_password(NTLMSSP_CLIENT_STATE *ntlmssp_state, const char *password)
 637 {
 638         ntlmssp_state->password = talloc_strdup(ntlmssp_state->mem_ctx, password);
 639         if (!ntlmssp_state->password) {
 640                 return NT_STATUS_NO_MEMORY;
 641         }
 642         return NT_STATUS_OK;
 643 }
 644
 645 NTSTATUS ntlmssp_set_domain(NTLMSSP_CLIENT_STATE *ntlmssp_state, const char *domain)
 646 {
 647         ntlmssp_state->domain = talloc_strdup(ntlmssp_state->mem_ctx, domain);
 648         if (!ntlmssp_state->domain) {
 649                 return NT_STATUS_NO_MEMORY;
 650         }
 651         return NT_STATUS_OK;
 652 }