source/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 static NTSTATUS ntlmssp_client_initial(struct ntlmssp_state *ntlmssp_state,
  27                                        DATA_BLOB reply, DATA_BLOB *next_request);
  28 static NTSTATUS ntlmssp_server_negotiate(struct ntlmssp_state *ntlmssp_state,
  29                                          const DATA_BLOB in, DATA_BLOB *out);
  30 static NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
  31                                          const DATA_BLOB reply, DATA_BLOB *next_request);
  32 static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
  33                                     const DATA_BLOB request, DATA_BLOB *reply);
  34
  35 /**
  36  * Callbacks for NTLMSSP - for both client and server operating modes
  37  *
  38  */
  39
  40 static const struct ntlmssp_callbacks {
  41         enum NTLMSSP_ROLE role;
  42         enum NTLM_MESSAGE_TYPE ntlmssp_command;
  43         NTSTATUS (*fn)(struct ntlmssp_state *ntlmssp_state,
  44                        DATA_BLOB in, DATA_BLOB *out);
  45 } ntlmssp_callbacks[] = {
  46         {NTLMSSP_CLIENT, NTLMSSP_INITIAL, ntlmssp_client_initial},
  47         {NTLMSSP_SERVER, NTLMSSP_NEGOTIATE, ntlmssp_server_negotiate},
  48         {NTLMSSP_CLIENT, NTLMSSP_CHALLENGE, ntlmssp_client_challenge},
  49         {NTLMSSP_SERVER, NTLMSSP_AUTH, ntlmssp_server_auth},
  50         {NTLMSSP_CLIENT, NTLMSSP_UNKNOWN, NULL},
  51         {NTLMSSP_SERVER, NTLMSSP_UNKNOWN, NULL}
  52 };
  53
  54
  55 /**
  56  * Print out the NTLMSSP flags for debugging
  57  * @param neg_flags The flags from the packet
  58  */
  59
  60 void debug_ntlmssp_flags(uint32 neg_flags)
  61 {
  62         DEBUG(3,("Got NTLMSSP neg_flags=0x%08x\n", neg_flags));
  63
  64         if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE)
  65                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_UNICODE\n"));
  66         if (neg_flags & NTLMSSP_NEGOTIATE_OEM)
  67                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_OEM\n"));
  68         if (neg_flags & NTLMSSP_REQUEST_TARGET)
  69                 DEBUGADD(4, ("  NTLMSSP_REQUEST_TARGET\n"));
  70         if (neg_flags & NTLMSSP_NEGOTIATE_SIGN)
  71                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_SIGN\n"));
  72         if (neg_flags & NTLMSSP_NEGOTIATE_SEAL)
  73                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_SEAL\n"));
  74         if (neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
  75                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_LM_KEY\n"));
  76         if (neg_flags & NTLMSSP_NEGOTIATE_NETWARE)
  77                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_NETWARE\n"));
  78         if (neg_flags & NTLMSSP_NEGOTIATE_NTLM)
  79                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_NTLM\n"));
  80         if (neg_flags & NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED)
  81                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED\n"));
  82         if (neg_flags & NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED)
  83                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED\n"));
  84         if (neg_flags & NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL)
  85                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL\n"));
  86         if (neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN)
  87                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_ALWAYS_SIGN\n"));
  88         if (neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
  89                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_NTLM2\n"));
  90         if (neg_flags & NTLMSSP_CHAL_TARGET_INFO)
  91                 DEBUGADD(4, ("  NTLMSSP_CHAL_TARGET_INFO\n"));
  92         if (neg_flags & NTLMSSP_NEGOTIATE_128)
  93                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_128\n"));
  94         if (neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH)
  95                 DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_KEY_EXCH\n"));
  96 }
  97
  98 /**
  99  * Default challenge generation code.
 100  *
 101  */
 102
 103 static const uint8 *get_challenge(const struct ntlmssp_state *ntlmssp_state)
 104 {
 105         static uchar chal[8];
 106         generate_random_buffer(chal, sizeof(chal));
 107
 108         return chal;
 109 }
 110
 111 /**
 112  * Default 'we can set the challenge to anything we like' implementation
 113  *
 114  */
 115
 116 static BOOL may_set_challenge(const struct ntlmssp_state *ntlmssp_state)
 117 {
 118         return True;
 119 }
 120
 121 /**
 122  * Default 'we can set the challenge to anything we like' implementation
 123  *
 124  * Does not actually do anything, as the value is always in the structure anyway.
 125  *
 126  */
 127
 128 static NTSTATUS set_challenge(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *challenge)
 129 {
 130         SMB_ASSERT(challenge->length == 8);
 131         return NT_STATUS_OK;
 132 }
 133
 134 /**
 135  * Set a username on an NTLMSSP context - ensures it is talloc()ed
 136  *
 137  */
 138
 139 NTSTATUS ntlmssp_set_username(NTLMSSP_STATE *ntlmssp_state, const char *user)
 140 {
 141         ntlmssp_state->user = talloc_strdup(ntlmssp_state->mem_ctx, user);
 142         if (!ntlmssp_state->user) {
 143                 return NT_STATUS_NO_MEMORY;
 144         }
 145         return NT_STATUS_OK;
 146 }
 147
 148 /**
 149  * Set a password on an NTLMSSP context - ensures it is talloc()ed
 150  *
 151  */
 152 NTSTATUS ntlmssp_set_password(NTLMSSP_STATE *ntlmssp_state, const char *password)
 153 {
 154         if (!password) {
 155                 ntlmssp_state->password = NULL;
 156         } else {
 157                 ntlmssp_state->password = talloc_strdup(ntlmssp_state->mem_ctx, password);
 158                 if (!ntlmssp_state->password) {
 159                         return NT_STATUS_NO_MEMORY;
 160                 }
 161         }
 162         return NT_STATUS_OK;
 163 }
 164
 165 /**
 166  * Set a domain on an NTLMSSP context - ensures it is talloc()ed
 167  *
 168  */
 169 NTSTATUS ntlmssp_set_domain(NTLMSSP_STATE *ntlmssp_state, const char *domain)
 170 {
 171         ntlmssp_state->domain = talloc_strdup(ntlmssp_state->mem_ctx, domain);
 172         if (!ntlmssp_state->domain) {
 173                 return NT_STATUS_NO_MEMORY;
 174         }
 175         return NT_STATUS_OK;
 176 }
 177
 178 /**
 179  * Set a workstation on an NTLMSSP context - ensures it is talloc()ed
 180  *
 181  */
 182 NTSTATUS ntlmssp_set_workstation(NTLMSSP_STATE *ntlmssp_state, const char *workstation)
 183 {
 184         ntlmssp_state->workstation = talloc_strdup(ntlmssp_state->mem_ctx, workstation);
 185         if (!ntlmssp_state->domain) {
 186                 return NT_STATUS_NO_MEMORY;
 187         }
 188         return NT_STATUS_OK;
 189 }
 190
 191 /**
 192  *  Store a DATA_BLOB containing an NTLMSSP response, for use later.
 193  *  This copies the data blob
 194  */
 195
 196 NTSTATUS ntlmssp_store_response(NTLMSSP_STATE *ntlmssp_state,
 197                                 DATA_BLOB response)
 198 {
 199         ntlmssp_state->stored_response = data_blob_talloc(ntlmssp_state->mem_ctx,
 200                                                           response.data, response.length);
 201         return NT_STATUS_OK;
 202 }
 203
 204 /**
 205  * Next state function for the NTLMSSP state machine
 206  *
 207  * @param ntlmssp_state NTLMSSP State
 208  * @param in The packet in from the NTLMSSP partner, as a DATA_BLOB
 209  * @param out The reply, as an allocated DATA_BLOB, caller to free.
 210  * @return Errors, NT_STATUS_MORE_PROCESSING_REQUIRED or NT_STATUS_OK.
 211  */
 212
 213 NTSTATUS ntlmssp_update(NTLMSSP_STATE *ntlmssp_state,
 214                         const DATA_BLOB in, DATA_BLOB *out)
 215 {
 216         DATA_BLOB input;
 217         uint32 ntlmssp_command;
 218         int i;
 219
 220         *out = data_blob(NULL, 0);
 221
 222         if (!in.length && ntlmssp_state->stored_response.length) {
 223                 input = ntlmssp_state->stored_response;
 224
 225                 /* we only want to read the stored response once - overwrite it */
 226                 ntlmssp_state->stored_response = data_blob(NULL, 0);
 227         } else {
 228                 input = in;
 229         }
 230
 231         if (!input.length) {
 232                 switch (ntlmssp_state->role) {
 233                 case NTLMSSP_CLIENT:
 234                         ntlmssp_command = NTLMSSP_INITIAL;
 235                         break;
 236                 case NTLMSSP_SERVER:
 237                         /* 'datagram' mode - no neg packet */
 238                         ntlmssp_command = NTLMSSP_NEGOTIATE;
 239                         break;
 240                 }
 241         } else {
 242                 if (!msrpc_parse(&input, "Cd",
 243                                  "NTLMSSP",
 244                                  &ntlmssp_command)) {
 245                         DEBUG(1, ("Failed to parse NTLMSSP packet, could not extract NTLMSSP command\n"));
 246                         dump_data(2, (const char *)input.data, input.length);
 247                         return NT_STATUS_INVALID_PARAMETER;
 248                 }
 249         }
 250
 251         if (ntlmssp_command != ntlmssp_state->expected_state) {
 252                 DEBUG(1, ("got NTLMSSP command %u, expected %u\n", ntlmssp_command, ntlmssp_state->expected_state));
 253                 return NT_STATUS_INVALID_PARAMETER;
 254         }
 255
 256         for (i=0; ntlmssp_callbacks[i].fn; i++) {
 257                 if (ntlmssp_callbacks[i].role == ntlmssp_state->role
 258                     && ntlmssp_callbacks[i].ntlmssp_command == ntlmssp_command) {
 259                         return ntlmssp_callbacks[i].fn(ntlmssp_state, input, out);
 260                 }
 261         }
 262
 263         DEBUG(1, ("failed to find NTLMSSP callback for NTLMSSP mode %u, command %u\n",
 264                   ntlmssp_state->role, ntlmssp_command));
 265
 266         return NT_STATUS_INVALID_PARAMETER;
 267 }
 268
 269 /**
 270  * End an NTLMSSP state machine
 271  *
 272  * @param ntlmssp_state NTLMSSP State, free()ed by this function
 273  */
 274
 275 void ntlmssp_end(NTLMSSP_STATE **ntlmssp_state)
 276 {
 277         TALLOC_CTX *mem_ctx = (*ntlmssp_state)->mem_ctx;
 278
 279         (*ntlmssp_state)->ref_count--;
 280
 281         if ((*ntlmssp_state)->ref_count == 0) {
 282                 data_blob_free(&(*ntlmssp_state)->chal);
 283                 data_blob_free(&(*ntlmssp_state)->lm_resp);
 284                 data_blob_free(&(*ntlmssp_state)->nt_resp);
 285
 286                 talloc_destroy(mem_ctx);
 287         }
 288
 289         *ntlmssp_state = NULL;
 290         return;
 291 }
 292
 293 /**
 294  * Determine correct target name flags for reply, given server role
 295  * and negotiated flags
 296  *
 297  * @param ntlmssp_state NTLMSSP State
 298  * @param neg_flags The flags from the packet
 299  * @param chal_flags The flags to be set in the reply packet
 300  * @return The 'target name' string.
 301  */
 302
 303 static const char *ntlmssp_target_name(struct ntlmssp_state *ntlmssp_state,
 304                                        uint32 neg_flags, uint32 *chal_flags)
 305 {
 306         if (neg_flags & NTLMSSP_REQUEST_TARGET) {
 307                 *chal_flags |= NTLMSSP_CHAL_TARGET_INFO;
 308                 *chal_flags |= NTLMSSP_REQUEST_TARGET;
 309                 if (ntlmssp_state->server_role == ROLE_STANDALONE) {
 310                         *chal_flags |= NTLMSSP_TARGET_TYPE_SERVER;
 311                         return ntlmssp_state->get_global_myname();
 312                 } else {
 313                         *chal_flags |= NTLMSSP_TARGET_TYPE_DOMAIN;
 314                         return ntlmssp_state->get_domain();
 315                 };
 316         } else {
 317                 return "";
 318         }
 319 }
 320
 321 static void ntlmssp_handle_neg_flags(struct ntlmssp_state *ntlmssp_state,
 322                                       uint32 neg_flags, BOOL allow_lm) {
 323         if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE) {
 324                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_UNICODE;
 325                 ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_OEM;
 326                 ntlmssp_state->unicode = True;
 327         } else {
 328                 ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_UNICODE;
 329                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_OEM;
 330                 ntlmssp_state->unicode = False;
 331         }
 332
 333         if ((neg_flags & NTLMSSP_NEGOTIATE_LM_KEY) && allow_lm) {
 334                 /* other end forcing us to use LM */
 335                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_LM_KEY;
 336                 ntlmssp_state->use_ntlmv2 = False;
 337         } else {
 338                 ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
 339         }
 340
 341         if (neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN) {
 342                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN;
 343         }
 344
 345         if (!(neg_flags & NTLMSSP_NEGOTIATE_NTLM2)) {
 346                 ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2;
 347         }
 348
 349         if (!(neg_flags & NTLMSSP_NEGOTIATE_128)) {
 350                 ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_128;
 351         }
 352
 353         if (!(neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH)) {
 354                 ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_KEY_EXCH;
 355         }
 356
 357         if ((neg_flags & NTLMSSP_REQUEST_TARGET)) {
 358                 ntlmssp_state->neg_flags |= NTLMSSP_REQUEST_TARGET;
 359         }
 360
 361 }
 362
 363
 364 /**
 365  * Next state function for the Negotiate packet
 366  *
 367  * @param ntlmssp_state NTLMSSP State
 368  * @param request The request, as a DATA_BLOB
 369  * @param request The reply, as an allocated DATA_BLOB, caller to free.
 370  * @return Errors or MORE_PROCESSING_REQUIRED if a reply is sent.
 371  */
 372
 373 static NTSTATUS ntlmssp_server_negotiate(struct ntlmssp_state *ntlmssp_state,
 374                                          const DATA_BLOB request, DATA_BLOB *reply)
 375 {
 376         DATA_BLOB struct_blob;
 377         fstring dnsname, dnsdomname;
 378         uint32 neg_flags = 0;
 379         uint32 ntlmssp_command, chal_flags;
 380         char *cliname=NULL, *domname=NULL;
 381         const uint8 *cryptkey;
 382         const char *target_name;
 383
 384         /* parse the NTLMSSP packet */
 385 #if 0
 386         file_save("ntlmssp_negotiate.dat", request.data, request.length);
 387 #endif
 388
 389         if (request.length) {
 390                 if (!msrpc_parse(&request, "CddAA",
 391                                  "NTLMSSP",
 392                                  &ntlmssp_command,
 393                                  &neg_flags,
 394                                  &cliname,
 395                                  &domname)) {
 396                         DEBUG(1, ("ntlmssp_server_negotiate: failed to parse NTLMSSP:\n"));
 397                         dump_data(2, (const char *)request.data, request.length);
 398                         return NT_STATUS_INVALID_PARAMETER;
 399                 }
 400
 401                 SAFE_FREE(cliname);
 402                 SAFE_FREE(domname);
 403
 404                 debug_ntlmssp_flags(neg_flags);
 405         }
 406
 407         ntlmssp_handle_neg_flags(ntlmssp_state, neg_flags, lp_lanman_auth());
 408
 409         /* Ask our caller what challenge they would like in the packet */
 410         cryptkey = ntlmssp_state->get_challenge(ntlmssp_state);
 411
 412         /* Check if we may set the challenge */
 413         if (!ntlmssp_state->may_set_challenge(ntlmssp_state)) {
 414                 ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2;
 415         }
 416
 417         /* The flags we send back are not just the negotiated flags,
 418          * they are also 'what is in this packet'.  Therfore, we
 419          * operate on 'chal_flags' from here on
 420          */
 421
 422         chal_flags = ntlmssp_state->neg_flags;
 423
 424         /* get the right name to fill in as 'target' */
 425         target_name = ntlmssp_target_name(ntlmssp_state,
 426                                           neg_flags, &chal_flags);
 427         if (target_name == NULL)
 428                 return NT_STATUS_INVALID_PARAMETER;
 429
 430         ntlmssp_state->chal = data_blob_talloc(ntlmssp_state->mem_ctx, cryptkey, 8);
 431         ntlmssp_state->internal_chal = data_blob_talloc(ntlmssp_state->mem_ctx, cryptkey, 8);
 432
 433
 434         /* This should be a 'netbios domain -> DNS domain' mapping */
 435         dnsdomname[0] = '\0';
 436         get_mydnsdomname(dnsdomname);
 437         strlower_m(dnsdomname);
 438
 439         dnsname[0] = '\0';
 440         get_mydnsfullname(dnsname);
 441
 442         /* This creates the 'blob' of names that appears at the end of the packet */
 443         if (chal_flags & NTLMSSP_CHAL_TARGET_INFO)
 444         {
 445                 const char *target_name_dns = "";
 446                 if (chal_flags |= NTLMSSP_TARGET_TYPE_DOMAIN) {
 447                         target_name_dns = dnsdomname;
 448                 } else if (chal_flags |= NTLMSSP_TARGET_TYPE_SERVER) {
 449                         target_name_dns = dnsname;
 450                 }
 451
 452                 msrpc_gen(&struct_blob, "aaaaa",
 453                           NTLMSSP_NAME_TYPE_DOMAIN, target_name,
 454                           NTLMSSP_NAME_TYPE_SERVER, ntlmssp_state->get_global_myname(),
 455                           NTLMSSP_NAME_TYPE_DOMAIN_DNS, dnsdomname,
 456                           NTLMSSP_NAME_TYPE_SERVER_DNS, dnsname,
 457                           0, "");
 458         } else {
 459                 struct_blob = data_blob(NULL, 0);
 460         }
 461
 462         {
 463                 /* Marshel the packet in the right format, be it unicode or ASCII */
 464                 const char *gen_string;
 465                 if (ntlmssp_state->unicode) {
 466                         gen_string = "CdUdbddB";
 467                 } else {
 468                         gen_string = "CdAdbddB";
 469                 }
 470
 471                 msrpc_gen(reply, gen_string,
 472                           "NTLMSSP",
 473                           NTLMSSP_CHALLENGE,
 474                           target_name,
 475                           chal_flags,
 476                           cryptkey, 8,
 477                           0, 0,
 478                           struct_blob.data, struct_blob.length);
 479         }
 480
 481         data_blob_free(&struct_blob);
 482
 483         ntlmssp_state->expected_state = NTLMSSP_AUTH;
 484
 485         return NT_STATUS_MORE_PROCESSING_REQUIRED;
 486 }
 487
 488 /**
 489  * Next state function for the Authenticate packet
 490  *
 491  * @param ntlmssp_state NTLMSSP State
 492  * @param request The request, as a DATA_BLOB
 493  * @param request The reply, as an allocated DATA_BLOB, caller to free.
 494  * @return Errors or NT_STATUS_OK.
 495  */
 496
 497 static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
 498                                     const DATA_BLOB request, DATA_BLOB *reply)
 499 {
 500         DATA_BLOB encrypted_session_key = data_blob(NULL, 0);
 501         DATA_BLOB user_session_key = data_blob(NULL, 0);
 502         DATA_BLOB lm_session_key = data_blob(NULL, 0);
 503         DATA_BLOB session_key = data_blob(NULL, 0);
 504         uint32 ntlmssp_command, auth_flags;
 505         NTSTATUS nt_status;
 506
 507         /* used by NTLM2 */
 508         BOOL doing_ntlm2 = False;
 509
 510         uchar session_nonce[16];
 511         uchar session_nonce_hash[16];
 512
 513         const char *parse_string;
 514         char *domain = NULL;
 515         char *user = NULL;
 516         char *workstation = NULL;
 517
 518         /* parse the NTLMSSP packet */
 519         *reply = data_blob(NULL, 0);
 520
 521 #if 0
 522         file_save("ntlmssp_auth.dat", request.data, request.length);
 523 #endif
 524
 525         if (ntlmssp_state->unicode) {
 526                 parse_string = "CdBBUUUBd";
 527         } else {
 528                 parse_string = "CdBBAAABd";
 529         }
 530
 531         data_blob_free(&ntlmssp_state->lm_resp);
 532         data_blob_free(&ntlmssp_state->nt_resp);
 533
 534         ntlmssp_state->user = NULL;
 535         ntlmssp_state->domain = NULL;
 536         ntlmssp_state->workstation = NULL;
 537
 538         /* now the NTLMSSP encoded auth hashes */
 539         if (!msrpc_parse(&request, parse_string,
 540                          "NTLMSSP",
 541                          &ntlmssp_command,
 542                          &ntlmssp_state->lm_resp,
 543                          &ntlmssp_state->nt_resp,
 544                          &domain,
 545                          &user,
 546                          &workstation,
 547                          &encrypted_session_key,
 548                          &auth_flags)) {
 549                 DEBUG(1, ("ntlmssp_server_auth: failed to parse NTLMSSP:\n"));
 550                 dump_data(2, (const char *)request.data, request.length);
 551                 SAFE_FREE(domain);
 552                 SAFE_FREE(user);
 553                 SAFE_FREE(workstation);
 554                 data_blob_free(&encrypted_session_key);
 555                 auth_flags = 0;
 556
 557                 /* Try again with a shorter string (Win9X truncates this packet) */
 558                 if (ntlmssp_state->unicode) {
 559                         parse_string = "CdBBUUU";
 560                 } else {
 561                         parse_string = "CdBBAAA";
 562                 }
 563
 564                 /* now the NTLMSSP encoded auth hashes */
 565                 if (!msrpc_parse(&request, parse_string,
 566                                  "NTLMSSP",
 567                                  &ntlmssp_command,
 568                                  &ntlmssp_state->lm_resp,
 569                                  &ntlmssp_state->nt_resp,
 570                                  &domain,
 571                                  &user,
 572                                  &workstation)) {
 573                         DEBUG(1, ("ntlmssp_server_auth: failed to parse NTLMSSP:\n"));
 574                         dump_data(2, (const char *)request.data, request.length);
 575                         SAFE_FREE(domain);
 576                         SAFE_FREE(user);
 577                         SAFE_FREE(workstation);
 578
 579                         return NT_STATUS_INVALID_PARAMETER;
 580                 }
 581         }
 582
 583         if (auth_flags)
 584                 ntlmssp_handle_neg_flags(ntlmssp_state, auth_flags, lp_lanman_auth());
 585
 586         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) {
 587                 SAFE_FREE(domain);
 588                 SAFE_FREE(user);
 589                 SAFE_FREE(workstation);
 590                 data_blob_free(&encrypted_session_key);
 591                 return nt_status;
 592         }
 593
 594         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(ntlmssp_state, user))) {
 595                 SAFE_FREE(domain);
 596                 SAFE_FREE(user);
 597                 SAFE_FREE(workstation);
 598                 data_blob_free(&encrypted_session_key);
 599                 return nt_status;
 600         }
 601
 602         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_workstation(ntlmssp_state, workstation))) {
 603                 SAFE_FREE(domain);
 604                 SAFE_FREE(user);
 605                 SAFE_FREE(workstation);
 606                 data_blob_free(&encrypted_session_key);
 607                 return nt_status;
 608         }
 609
 610         SAFE_FREE(domain);
 611         SAFE_FREE(user);
 612         SAFE_FREE(workstation);
 613
 614         DEBUG(3,("Got user=[%s] domain=[%s] workstation=[%s] len1=%lu len2=%lu\n",
 615                  ntlmssp_state->user, ntlmssp_state->domain, ntlmssp_state->workstation, (unsigned long)ntlmssp_state->lm_resp.length, (unsigned long)ntlmssp_state->nt_resp.length));
 616
 617 #if 0
 618         file_save("nthash1.dat",  &ntlmssp_state->nt_resp.data,  &ntlmssp_state->nt_resp.length);
 619         file_save("lmhash1.dat",  &ntlmssp_state->lm_resp.data,  &ntlmssp_state->lm_resp.length);
 620 #endif
 621
 622         /* NTLM2 uses a 'challenge' that is made of up both the server challenge, and a
 623            client challenge
 624
 625            However, the NTLM2 flag may still be set for the real NTLMv2 logins, be careful.
 626         */
 627         if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
 628                 if (ntlmssp_state->nt_resp.length == 24 && ntlmssp_state->lm_resp.length == 24) {
 629                         struct MD5Context md5_session_nonce_ctx;
 630                         SMB_ASSERT(ntlmssp_state->internal_chal.data && ntlmssp_state->internal_chal.length == 8);
 631
 632                         doing_ntlm2 = True;
 633
 634                         memcpy(session_nonce, ntlmssp_state->internal_chal.data, 8);
 635                         memcpy(&session_nonce[8], ntlmssp_state->lm_resp.data, 8);
 636
 637                         MD5Init(&md5_session_nonce_ctx);
 638                         MD5Update(&md5_session_nonce_ctx, session_nonce, 16);
 639                         MD5Final(session_nonce_hash, &md5_session_nonce_ctx);
 640
 641                         ntlmssp_state->chal = data_blob_talloc(ntlmssp_state->mem_ctx, session_nonce_hash, 8);
 642
 643                         /* LM response is no longer useful */
 644                         data_blob_free(&ntlmssp_state->lm_resp);
 645
 646                         /* We changed the effective challenge - set it */
 647                         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_state->set_challenge(ntlmssp_state, &ntlmssp_state->chal))) {
 648                                 data_blob_free(&encrypted_session_key);
 649                                 return nt_status;
 650                         }
 651                 }
 652         }
 653
 654         /*
 655          * Note we don't check here for NTLMv2 auth settings. If NTLMv2 auth
 656          * is required (by "ntlm auth = no" and "lm auth = no" being set in the
 657          * smb.conf file) and no NTLMv2 response was sent then the password check
 658          * will fail here. JRA.
 659          */
 660
 661         /* Finally, actually ask if the password is OK */
 662
 663         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_state->check_password(ntlmssp_state,
 664                                                                        &user_session_key, &lm_session_key))) {
 665                 data_blob_free(&encrypted_session_key);
 666                 return nt_status;
 667         }
 668
 669         dump_data_pw("NT session key:\n", user_session_key.data, user_session_key.length);
 670         dump_data_pw("LM first-8:\n", lm_session_key.data, lm_session_key.length);
 671
 672         /* Handle the different session key derivation for NTLM2 */
 673         if (doing_ntlm2) {
 674                 if (user_session_key.data && user_session_key.length == 16) {
 675                         session_key = data_blob_talloc(ntlmssp_state->mem_ctx, NULL, 16);
 676                         hmac_md5(user_session_key.data, session_nonce,
 677                                  sizeof(session_nonce), session_key.data);
 678                         DEBUG(10,("ntlmssp_server_auth: Created NTLM2 session key.\n"));
 679                         dump_data_pw("NTLM2 session key:\n", session_key.data, session_key.length);
 680
 681                 } else {
 682                         DEBUG(10,("ntlmssp_server_auth: Failed to create NTLM2 session key.\n"));
 683                         session_key = data_blob(NULL, 0);
 684                 }
 685         } else if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY) {
 686                 if (lm_session_key.data && lm_session_key.length >= 8) {
 687                         if (ntlmssp_state->lm_resp.data && ntlmssp_state->lm_resp.length == 24) {
 688                                 session_key = data_blob_talloc(ntlmssp_state->mem_ctx, NULL, 16);
 689                                 SMBsesskeygen_lm_sess_key(lm_session_key.data, ntlmssp_state->lm_resp.data,
 690                                                           session_key.data);
 691                                 DEBUG(10,("ntlmssp_server_auth: Created NTLM session key.\n"));
 692                                 dump_data_pw("LM session key:\n", session_key.data, session_key.length);
 693                         } else {
 694                                 /* use the key unmodified - it's
 695                                  * probably a NULL key from the guest
 696                                  * login */
 697                                 session_key = lm_session_key;
 698                         }
 699                 } else {
 700                         DEBUG(10,("ntlmssp_server_auth: Failed to create NTLM session key.\n"));
 701                         session_key = data_blob(NULL, 0);
 702                 }
 703         } else if (user_session_key.data) {
 704                 session_key = user_session_key;
 705                 DEBUG(10,("ntlmssp_server_auth: Using unmodified nt session key.\n"));
 706                 dump_data_pw("unmodified session key:\n", session_key.data, session_key.length);
 707         } else if (lm_session_key.data) {
 708                 session_key = lm_session_key;
 709                 DEBUG(10,("ntlmssp_server_auth: Using unmodified lm session key.\n"));
 710                 dump_data_pw("unmodified session key:\n", session_key.data, session_key.length);
 711         } else {
 712                 DEBUG(10,("ntlmssp_server_auth: Failed to create unmodified session key.\n"));
 713                 session_key = data_blob(NULL, 0);
 714         }
 715
 716         /* With KEY_EXCH, the client supplies the proposed session key,
 717            but encrypts it with the long-term key */
 718         if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) {
 719                 if (!encrypted_session_key.data || encrypted_session_key.length != 16) {
 720                         data_blob_free(&encrypted_session_key);
 721                         DEBUG(1, ("Client-supplied KEY_EXCH session key was of invalid length (%u)!\n",
 722                                   encrypted_session_key.length));
 723                         return NT_STATUS_INVALID_PARAMETER;
 724                 } else if (!session_key.data || session_key.length != 16) {
 725                         DEBUG(5, ("server session key is invalid (len == %u), cannot do KEY_EXCH!\n",
 726                                   session_key.length));
 727                         ntlmssp_state->session_key = session_key;
 728                 } else {
 729                         dump_data_pw("KEY_EXCH session key (enc):\n", encrypted_session_key.data, encrypted_session_key.length);
 730                         SamOEMhash(encrypted_session_key.data,
 731                                    session_key.data,
 732                                    encrypted_session_key.length);
 733                         ntlmssp_state->session_key = data_blob_talloc(ntlmssp_state->mem_ctx,
 734                                                                       encrypted_session_key.data,
 735                                                                       encrypted_session_key.length);
 736                         dump_data_pw("KEY_EXCH session key:\n", encrypted_session_key.data,
 737                                      encrypted_session_key.length);
 738                 }
 739         } else {
 740                 ntlmssp_state->session_key = session_key;
 741         }
 742
 743         if (!NT_STATUS_IS_OK(nt_status)) {
 744                 ntlmssp_state->session_key = data_blob(NULL, 0);
 745         } else if (ntlmssp_state->session_key.length) {
 746                 nt_status = ntlmssp_sign_init(ntlmssp_state);
 747         }
 748
 749         data_blob_free(&encrypted_session_key);
 750
 751         /* allow arbitarily many authentications */
 752         ntlmssp_state->expected_state = NTLMSSP_AUTH;
 753
 754         return nt_status;
 755 }
 756
 757 /**
 758  * Create an NTLMSSP state machine
 759  *
 760  * @param ntlmssp_state NTLMSSP State, allocated by this function
 761  */
 762
 763 NTSTATUS ntlmssp_server_start(NTLMSSP_STATE **ntlmssp_state)
 764 {
 765         TALLOC_CTX *mem_ctx;
 766
 767         mem_ctx = talloc_init("NTLMSSP context");
 768
 769         *ntlmssp_state = talloc_zero(mem_ctx, sizeof(**ntlmssp_state));
 770         if (!*ntlmssp_state) {
 771                 DEBUG(0,("ntlmssp_server_start: talloc failed!\n"));
 772                 talloc_destroy(mem_ctx);
 773                 return NT_STATUS_NO_MEMORY;
 774         }
 775
 776         (*ntlmssp_state)->role = NTLMSSP_SERVER;
 777
 778         (*ntlmssp_state)->mem_ctx = mem_ctx;
 779         (*ntlmssp_state)->get_challenge = get_challenge;
 780         (*ntlmssp_state)->set_challenge = set_challenge;
 781         (*ntlmssp_state)->may_set_challenge = may_set_challenge;
 782
 783         (*ntlmssp_state)->get_global_myname = global_myname;
 784         (*ntlmssp_state)->get_domain = lp_workgroup;
 785         (*ntlmssp_state)->server_role = ROLE_DOMAIN_MEMBER; /* a good default */
 786
 787         (*ntlmssp_state)->expected_state = NTLMSSP_NEGOTIATE;
 788
 789         (*ntlmssp_state)->ref_count = 1;
 790
 791         (*ntlmssp_state)->neg_flags =
 792                 NTLMSSP_NEGOTIATE_128 |
 793                 NTLMSSP_NEGOTIATE_NTLM |
 794                 NTLMSSP_NEGOTIATE_NTLM2 |
 795                 NTLMSSP_NEGOTIATE_KEY_EXCH |
 796                 NTLMSSP_NEGOTIATE_SIGN;
 797
 798         return NT_STATUS_OK;
 799 }
 800
 801 /*********************************************************************
 802  Client side NTLMSSP
 803 *********************************************************************/
 804
 805 /**
 806  * Next state function for the Initial packet
 807  *
 808  * @param ntlmssp_state NTLMSSP State
 809  * @param request The request, as a DATA_BLOB.  reply.data must be NULL
 810  * @param request The reply, as an allocated DATA_BLOB, caller to free.
 811  * @return Errors or NT_STATUS_OK.
 812  */
 813
 814 static NTSTATUS ntlmssp_client_initial(struct ntlmssp_state *ntlmssp_state,
 815                                   DATA_BLOB reply, DATA_BLOB *next_request)
 816 {
 817         if (ntlmssp_state->unicode) {
 818                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_UNICODE;
 819         } else {
 820                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_OEM;
 821         }
 822
 823         if (ntlmssp_state->use_ntlmv2) {
 824                 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_NTLM2;
 825         }
 826
 827         /* generate the ntlmssp negotiate packet */
 828         msrpc_gen(next_request, "CddAA",
 829                   "NTLMSSP",
 830                   NTLMSSP_NEGOTIATE,
 831                   ntlmssp_state->neg_flags,
 832                   ntlmssp_state->get_domain(),
 833                   ntlmssp_state->get_global_myname());
 834
 835         ntlmssp_state->expected_state = NTLMSSP_CHALLENGE;
 836
 837         return NT_STATUS_MORE_PROCESSING_REQUIRED;
 838 }
 839
 840 /**
 841  * Next state function for the Challenge Packet.  Generate an auth packet.
 842  *
 843  * @param ntlmssp_state NTLMSSP State
 844  * @param request The request, as a DATA_BLOB.  reply.data must be NULL
 845  * @param request The reply, as an allocated DATA_BLOB, caller to free.
 846  * @return Errors or NT_STATUS_OK.
 847  */
 848
 849 static NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
 850                                          const DATA_BLOB reply, DATA_BLOB *next_request)
 851 {
 852         uint32 chal_flags, ntlmssp_command, unkn1, unkn2;
 853         DATA_BLOB server_domain_blob;
 854         DATA_BLOB challenge_blob;
 855         DATA_BLOB struct_blob = data_blob(NULL, 0);
 856         char *server_domain;
 857         const char *chal_parse_string;
 858         const char *auth_gen_string;
 859         DATA_BLOB lm_response = data_blob(NULL, 0);
 860         DATA_BLOB nt_response = data_blob(NULL, 0);
 861         DATA_BLOB session_key = data_blob(NULL, 0);
 862         DATA_BLOB encrypted_session_key = data_blob(NULL, 0);
 863         NTSTATUS nt_status;
 864
 865         if (!msrpc_parse(&reply, "CdBd",
 866                          "NTLMSSP",
 867                          &ntlmssp_command,
 868                          &server_domain_blob,
 869                          &chal_flags)) {
 870                 DEBUG(1, ("Failed to parse the NTLMSSP Challenge: (#1)\n"));
 871                 dump_data(2, (const char *)reply.data, reply.length);
 872
 873                 return NT_STATUS_INVALID_PARAMETER;
 874         }
 875
 876         data_blob_free(&server_domain_blob);
 877
 878         DEBUG(3, ("Got challenge flags:\n"));
 879         debug_ntlmssp_flags(chal_flags);
 880
 881         ntlmssp_handle_neg_flags(ntlmssp_state, chal_flags, lp_client_lanman_auth());
 882
 883         if (ntlmssp_state->unicode) {
 884                 if (chal_flags & NTLMSSP_CHAL_TARGET_INFO) {
 885                         chal_parse_string = "CdUdbddB";
 886                 } else {
 887                         chal_parse_string = "CdUdbdd";
 888                 }
 889                 auth_gen_string = "CdBBUUUBd";
 890         } else {
 891                 if (chal_flags & NTLMSSP_CHAL_TARGET_INFO) {
 892                         chal_parse_string = "CdAdbddB";
 893                 } else {
 894                         chal_parse_string = "CdAdbdd";
 895                 }
 896
 897                 auth_gen_string = "CdBBAAABd";
 898         }
 899
 900         DEBUG(3, ("NTLMSSP: Set final flags:\n"));
 901         debug_ntlmssp_flags(ntlmssp_state->neg_flags);
 902
 903         if (!msrpc_parse(&reply, chal_parse_string,
 904                          "NTLMSSP",
 905                          &ntlmssp_command,
 906                          &server_domain,
 907                          &chal_flags,
 908                          &challenge_blob, 8,
 909                          &unkn1, &unkn2,
 910                          &struct_blob)) {
 911                 DEBUG(1, ("Failed to parse the NTLMSSP Challenge: (#2)\n"));
 912                 dump_data(2, (const char *)reply.data, reply.length);
 913                 return NT_STATUS_INVALID_PARAMETER;
 914         }
 915
 916         ntlmssp_state->server_domain = talloc_strdup(ntlmssp_state->mem_ctx,
 917                                                      server_domain);
 918
 919         SAFE_FREE(server_domain);
 920         if (challenge_blob.length != 8) {
 921                 data_blob_free(&struct_blob);
 922                 return NT_STATUS_INVALID_PARAMETER;
 923         }
 924
 925         if (!ntlmssp_state->password) {
 926                 static const uchar zeros[16];
 927                 /* do nothing - blobs are zero length */
 928
 929                 /* session key is all zeros */
 930                 session_key = data_blob_talloc(ntlmssp_state->mem_ctx, zeros, 16);
 931
 932                 /* not doing NLTM2 without a password */
 933                 ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2;
 934         } else if (ntlmssp_state->use_ntlmv2) {
 935
 936                 if (!struct_blob.length) {
 937                         /* be lazy, match win2k - we can't do NTLMv2 without it */
 938                         DEBUG(1, ("Server did not provide 'target information', required for NTLMv2\n"));
 939                         return NT_STATUS_INVALID_PARAMETER;
 940                 }
 941
 942                 /* TODO: if the remote server is standalone, then we should replace 'domain'
 943                    with the server name as supplied above */
 944
 945                 if (!SMBNTLMv2encrypt(ntlmssp_state->user,
 946                                       ntlmssp_state->domain,
 947                                       ntlmssp_state->password, &challenge_blob,
 948                                       &struct_blob,
 949                                       &lm_response, &nt_response, &session_key)) {
 950                         data_blob_free(&challenge_blob);
 951                         data_blob_free(&struct_blob);
 952                         return NT_STATUS_NO_MEMORY;
 953                 }
 954         } else if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
 955                 struct MD5Context md5_session_nonce_ctx;
 956                 uchar nt_hash[16];
 957                 uchar session_nonce[16];
 958                 uchar session_nonce_hash[16];
 959                 uchar user_session_key[16];
 960                 E_md4hash(ntlmssp_state->password, nt_hash);
 961
 962                 lm_response = data_blob_talloc(ntlmssp_state->mem_ctx, NULL, 24);
 963                 generate_random_buffer(lm_response.data, 8);
 964                 memset(lm_response.data+8, 0, 16);
 965
 966                 memcpy(session_nonce, challenge_blob.data, 8);
 967                 memcpy(&session_nonce[8], lm_response.data, 8);
 968
 969                 MD5Init(&md5_session_nonce_ctx);
 970                 MD5Update(&md5_session_nonce_ctx, challenge_blob.data, 8);
 971                 MD5Update(&md5_session_nonce_ctx, lm_response.data, 8);
 972                 MD5Final(session_nonce_hash, &md5_session_nonce_ctx);
 973
 974                 DEBUG(5, ("NTLMSSP challenge set by NTLM2\n"));
 975                 DEBUG(5, ("challenge is: \n"));
 976                 dump_data(5, (const char *)session_nonce_hash, 8);
 977
 978                 nt_response = data_blob_talloc(ntlmssp_state->mem_ctx, NULL, 24);
 979                 SMBNTencrypt(ntlmssp_state->password,
 980                              session_nonce_hash,
 981                              nt_response.data);
 982
 983                 session_key = data_blob_talloc(ntlmssp_state->mem_ctx, NULL, 16);
 984
 985                 SMBsesskeygen_ntv1(nt_hash, NULL, user_session_key);
 986                 hmac_md5(user_session_key, session_nonce, sizeof(session_nonce), session_key.data);
 987                 dump_data_pw("NTLM2 session key:\n", session_key.data, session_key.length);
 988         } else {
 989
 990
 991                 uchar lm_hash[16];
 992                 uchar nt_hash[16];
 993                 E_deshash(ntlmssp_state->password, lm_hash);
 994                 E_md4hash(ntlmssp_state->password, nt_hash);
 995
 996                 /* lanman auth is insecure, it may be disabled */
 997                 if (lp_client_lanman_auth()) {
 998                         lm_response = data_blob_talloc(ntlmssp_state->mem_ctx, NULL, 24);
 999                         SMBencrypt(ntlmssp_state->password,challenge_blob.data,
1000                                    lm_response.data);
1001                 }
1002
1003                 nt_response = data_blob_talloc(ntlmssp_state->mem_ctx, NULL, 24);
1004                 SMBNTencrypt(ntlmssp_state->password,challenge_blob.data,
1005                              nt_response.data);
1006
1007                 session_key = data_blob_talloc(ntlmssp_state->mem_ctx, NULL, 16);
1008                 if ((ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
1009                     && lp_client_lanman_auth()) {
1010                         SMBsesskeygen_lmv1(lm_hash, lm_response.data,
1011                                            session_key.data);
1012                         dump_data_pw("LM session key\n", session_key.data, session_key.length);
1013                 } else {
1014                         SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
1015                         dump_data_pw("NT session key:\n", session_key.data, session_key.length);
1016                 }
1017         }
1018         data_blob_free(&struct_blob);
1019
1020         /* Key exchange encryptes a new client-generated session key with
1021            the password-derived key */
1022         if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) {
1023                 /* Make up a new session key */
1024                 uint8 client_session_key[16];
1025                 generate_random_buffer(client_session_key, sizeof(client_session_key));
1026
1027                 /* Encrypt the new session key with the old one */
1028                 encrypted_session_key = data_blob(client_session_key, sizeof(client_session_key));
1029                 dump_data_pw("KEY_EXCH session key:\n", encrypted_session_key.data, encrypted_session_key.length);
1030                 SamOEMhash(encrypted_session_key.data, session_key.data, encrypted_session_key.length);
1031                 dump_data_pw("KEY_EXCH session key (enc):\n", encrypted_session_key.data, encrypted_session_key.length);
1032
1033                 /* Mark the new session key as the 'real' session key */
1034                 data_blob_free(&session_key);
1035                 session_key = data_blob_talloc(ntlmssp_state->mem_ctx, client_session_key, sizeof(client_session_key));
1036         }
1037
1038         /* this generates the actual auth packet */
1039         if (!msrpc_gen(next_request, auth_gen_string,
1040                        "NTLMSSP",
1041                        NTLMSSP_AUTH,
1042                        lm_response.data, lm_response.length,
1043                        nt_response.data, nt_response.length,
1044                        ntlmssp_state->domain,
1045                        ntlmssp_state->user,
1046                        ntlmssp_state->get_global_myname(),
1047                        encrypted_session_key.data, encrypted_session_key.length,
1048                        ntlmssp_state->neg_flags)) {
1049
1050                 return NT_STATUS_NO_MEMORY;
1051         }
1052
1053         data_blob_free(&encrypted_session_key);
1054
1055         data_blob_free(&ntlmssp_state->chal);
1056
1057         ntlmssp_state->chal = challenge_blob;
1058         ntlmssp_state->lm_resp = lm_response;
1059         ntlmssp_state->nt_resp = nt_response;
1060         ntlmssp_state->session_key = session_key;
1061
1062         ntlmssp_state->expected_state = NTLMSSP_UNKNOWN;
1063
1064         if (!NT_STATUS_IS_OK(nt_status = ntlmssp_sign_init(ntlmssp_state))) {
1065                 DEBUG(1, ("Could not setup NTLMSSP signing/sealing system (error was: %s)\n", nt_errstr(nt_status)));
1066                 return nt_status;
1067         }
1068
1069         return NT_STATUS_MORE_PROCESSING_REQUIRED;
1070 }
1071
1072 NTSTATUS ntlmssp_client_start(NTLMSSP_STATE **ntlmssp_state)
1073 {
1074         TALLOC_CTX *mem_ctx;
1075
1076         mem_ctx = talloc_init("NTLMSSP Client context");
1077
1078         *ntlmssp_state = talloc_zero(mem_ctx, sizeof(**ntlmssp_state));
1079         if (!*ntlmssp_state) {
1080                 DEBUG(0,("ntlmssp_client_start: talloc failed!\n"));
1081                 talloc_destroy(mem_ctx);
1082                 return NT_STATUS_NO_MEMORY;
1083         }
1084
1085         (*ntlmssp_state)->role = NTLMSSP_CLIENT;
1086
1087         (*ntlmssp_state)->mem_ctx = mem_ctx;
1088
1089         (*ntlmssp_state)->get_global_myname = global_myname;
1090         (*ntlmssp_state)->get_domain = lp_workgroup;
1091
1092         (*ntlmssp_state)->unicode = True;
1093
1094         (*ntlmssp_state)->use_ntlmv2 = lp_client_ntlmv2_auth();
1095
1096         (*ntlmssp_state)->expected_state = NTLMSSP_INITIAL;
1097
1098         (*ntlmssp_state)->ref_count = 1;
1099
1100         (*ntlmssp_state)->neg_flags =
1101                 NTLMSSP_NEGOTIATE_128 |
1102                 NTLMSSP_NEGOTIATE_NTLM |
1103                 NTLMSSP_NEGOTIATE_NTLM2 |
1104                 NTLMSSP_NEGOTIATE_KEY_EXCH |
1105                 /*
1106                  * We need to set this to allow a later SetPassword
1107                  * via the SAMR pipe to succeed. Strange.... We could
1108                  * also add  NTLMSSP_NEGOTIATE_SEAL here. JRA.
1109                  * */
1110                 NTLMSSP_NEGOTIATE_SIGN |
1111                 NTLMSSP_REQUEST_TARGET;
1112
1113         return NT_STATUS_OK;
1114 }
1115