source/utils/ntlm_auth.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Winbind status program.
   5
   6    Copyright (C) Tim Potter      2000-2002
   7    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003
   8    Copyright (C) Francesco Chemolli <kinkie@kame.usr.dsi.unimi.it> 2000
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23 */
  24
  25 #include "includes.h"
  26
  27 #undef DBGC_CLASS
  28 #define DBGC_CLASS DBGC_WINBIND
  29
  30 #define SQUID_BUFFER_SIZE 2010
  31
  32 enum squid_mode {
  33         SQUID_2_4_BASIC,
  34         SQUID_2_5_BASIC,
  35         SQUID_2_5_NTLMSSP
  36 };
  37
  38
  39 extern int winbindd_fd;
  40
  41 static const char *opt_username;
  42 static const char *opt_domain;
  43 static const char *opt_workstation;
  44 static const char *opt_password;
  45 static DATA_BLOB opt_challenge;
  46 static DATA_BLOB opt_lm_response;
  47 static DATA_BLOB opt_nt_response;
  48 static int request_lm_key;
  49 static int request_nt_key;
  50
  51
  52 static char winbind_separator(void)
  53 {
  54         struct winbindd_response response;
  55         static BOOL got_sep;
  56         static char sep;
  57
  58         if (got_sep)
  59                 return sep;
  60
  61         ZERO_STRUCT(response);
  62
  63         /* Send off request */
  64
  65         if (winbindd_request(WINBINDD_INFO, NULL, &response) !=
  66             NSS_STATUS_SUCCESS) {
  67                 d_printf("could not obtain winbind separator!\n");
  68                 return '\\';
  69         }
  70
  71         sep = response.data.info.winbind_separator;
  72         got_sep = True;
  73
  74         if (!sep) {
  75                 d_printf("winbind separator was NULL!\n");
  76                 return '\\';
  77         }
  78
  79         return sep;
  80 }
  81
  82 static const char *get_winbind_domain(void)
  83 {
  84         struct winbindd_response response;
  85
  86         static fstring winbind_domain;
  87         if (*winbind_domain) {
  88                 return winbind_domain;
  89         }
  90
  91         ZERO_STRUCT(response);
  92
  93         /* Send off request */
  94
  95         if (winbindd_request(WINBINDD_DOMAIN_NAME, NULL, &response) !=
  96             NSS_STATUS_SUCCESS) {
  97                 d_printf("could not obtain winbind domain name!\n");
  98                 return NULL;
  99         }
 100
 101         fstrcpy(winbind_domain, response.data.domain_name);
 102
 103         return winbind_domain;
 104
 105 }
 106
 107 static const char *get_winbind_netbios_name(void)
 108 {
 109         struct winbindd_response response;
 110
 111         static fstring winbind_netbios_name;
 112
 113         if (*winbind_netbios_name) {
 114                 return winbind_netbios_name;
 115         }
 116
 117         ZERO_STRUCT(response);
 118
 119         /* Send off request */
 120
 121         if (winbindd_request(WINBINDD_NETBIOS_NAME, NULL, &response) !=
 122             NSS_STATUS_SUCCESS) {
 123                 d_printf("could not obtain winbind netbios name!\n");
 124                 return NULL;
 125         }
 126
 127         fstrcpy(winbind_netbios_name, response.data.netbios_name);
 128
 129         return winbind_netbios_name;
 130
 131 }
 132
 133 /* Authenticate a user with a plaintext password */
 134
 135 static BOOL check_plaintext_auth(const char *user, const char *pass, BOOL stdout_diagnostics)
 136 {
 137         struct winbindd_request request;
 138         struct winbindd_response response;
 139         NSS_STATUS result;
 140
 141         /* Send off request */
 142
 143         ZERO_STRUCT(request);
 144         ZERO_STRUCT(response);
 145
 146         fstrcpy(request.data.auth.user, user);
 147         fstrcpy(request.data.auth.pass, pass);
 148
 149         result = winbindd_request(WINBINDD_PAM_AUTH, &request, &response);
 150
 151         /* Display response */
 152
 153         if (stdout_diagnostics) {
 154                 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
 155                         d_printf("Reading winbind reply failed! (0x01)\n");
 156                 }
 157
 158                 d_printf("%s: %s (0x%x)\n",
 159                          response.data.auth.nt_status_string,
 160                          response.data.auth.error_string,
 161                          response.data.auth.nt_status);
 162         } else {
 163                 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
 164                         DEBUG(1, ("Reading winbind reply failed! (0x01)\n"));
 165                 }
 166
 167                 DEBUG(3, ("%s: %s (0x%x)\n",
 168                           response.data.auth.nt_status_string,
 169                           response.data.auth.error_string,
 170                           response.data.auth.nt_status));
 171         }
 172
 173         return (result == NSS_STATUS_SUCCESS);
 174 }
 175
 176 /* authenticate a user with an encrypted username/password */
 177
 178 static NTSTATUS contact_winbind_auth_crap(const char *username,
 179                                           const char *domain,
 180                                           const char *workstation,
 181                                           const DATA_BLOB *challenge,
 182                                           const DATA_BLOB *lm_response,
 183                                           const DATA_BLOB *nt_response,
 184                                           uint32 flags,
 185                                           uint8 lm_key[8],
 186                                           uint8 nt_key[16],
 187                                           char **error_string)
 188 {
 189         NTSTATUS nt_status;
 190         NSS_STATUS result;
 191         struct winbindd_request request;
 192         struct winbindd_response response;
 193
 194         static uint8 zeros[16];
 195
 196         ZERO_STRUCT(request);
 197         ZERO_STRUCT(response);
 198
 199         request.flags = flags;
 200
 201         fstrcpy(request.data.auth_crap.user, username);
 202
 203         fstrcpy(request.data.auth_crap.domain, domain);
 204         fstrcpy(request.data.auth_crap.workstation, workstation);
 205
 206         memcpy(request.data.auth_crap.chal, challenge->data, MIN(challenge->length, 8));
 207
 208         if (lm_response && lm_response->length) {
 209                 memcpy(request.data.auth_crap.lm_resp, lm_response->data, MIN(lm_response->length, sizeof(request.data.auth_crap.lm_resp)));
 210                 request.data.auth_crap.lm_resp_len = lm_response->length;
 211         }
 212
 213         if (nt_response && nt_response->length) {
 214                 memcpy(request.data.auth_crap.nt_resp, nt_response->data, MIN(nt_response->length, sizeof(request.data.auth_crap.nt_resp)));
 215                 request.data.auth_crap.nt_resp_len = nt_response->length;
 216         }
 217
 218         result = winbindd_request(WINBINDD_PAM_AUTH_CRAP, &request, &response);
 219
 220         /* Display response */
 221
 222         if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
 223                 nt_status = NT_STATUS_UNSUCCESSFUL;
 224                 if (error_string)
 225                         *error_string = smb_xstrdup("Reading winbind reply failed!");
 226                 return nt_status;
 227         }
 228
 229         nt_status = (NT_STATUS(response.data.auth.nt_status));
 230         if (!NT_STATUS_IS_OK(nt_status)) {
 231                 if (error_string)
 232                         *error_string = smb_xstrdup(response.data.auth.error_string);
 233                 return nt_status;
 234         }
 235
 236         if ((flags & WBFLAG_PAM_LMKEY) && lm_key
 237             && (memcmp(zeros, response.data.auth.first_8_lm_hash,
 238                        sizeof(response.data.auth.first_8_lm_hash)) != 0)) {
 239                 memcpy(lm_key, response.data.auth.first_8_lm_hash,
 240                         sizeof(response.data.auth.first_8_lm_hash));
 241         }
 242         if ((flags & WBFLAG_PAM_NTKEY) && nt_key
 243                     && (memcmp(zeros, response.data.auth.nt_session_key,
 244                                sizeof(response.data.auth.nt_session_key)) != 0)) {
 245                 memcpy(nt_key, response.data.auth.nt_session_key,
 246                         sizeof(response.data.auth.nt_session_key));
 247         }
 248         return nt_status;
 249 }
 250
 251 static NTSTATUS winbind_pw_check(struct ntlmssp_state *ntlmssp_state)
 252 {
 253         return contact_winbind_auth_crap(ntlmssp_state->user, ntlmssp_state->domain,
 254                                          ntlmssp_state->workstation,
 255                                          &ntlmssp_state->chal,
 256                                          &ntlmssp_state->lm_resp,
 257                                          &ntlmssp_state->nt_resp,
 258                                          0,
 259                                          NULL,
 260                                          NULL,
 261                                          NULL);
 262 }
 263
 264 static void manage_squid_ntlmssp_request(enum squid_mode squid_mode,
 265                                          char *buf, int length)
 266 {
 267         static NTLMSSP_STATE *ntlmssp_state = NULL;
 268         DATA_BLOB request, reply;
 269         NTSTATUS nt_status;
 270
 271         if (strlen(buf) < 2) {
 272                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 273                 x_fprintf(x_stdout, "BH\n");
 274                 return;
 275         }
 276
 277         if (strlen(buf) > 3) {
 278                 request = base64_decode_data_blob(buf + 3);
 279         } else if (strcmp(buf, "YR") == 0) {
 280                 request = data_blob(NULL, 0);
 281                 if (ntlmssp_state)
 282                         ntlmssp_server_end(&ntlmssp_state);
 283         } else {
 284                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 285                 x_fprintf(x_stdout, "BH\n");
 286                 return;
 287         }
 288
 289         if (!ntlmssp_state) {
 290                 ntlmssp_server_start(&ntlmssp_state);
 291                 ntlmssp_state->check_password = winbind_pw_check;
 292                 ntlmssp_state->get_domain = get_winbind_domain;
 293                 ntlmssp_state->get_global_myname = get_winbind_netbios_name;
 294         }
 295
 296         DEBUG(10, ("got NTLMSSP packet:\n"));
 297         dump_data(10, request.data, request.length);
 298
 299         nt_status = ntlmssp_server_update(ntlmssp_state, request, &reply);
 300
 301         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 302                 char *reply_base64 = base64_encode_data_blob(reply);
 303                 x_fprintf(x_stdout, "TT %s\n", reply_base64);
 304                 SAFE_FREE(reply_base64);
 305                 data_blob_free(&reply);
 306                 DEBUG(10, ("NTLMSSP challenge\n"));
 307         } else if (!NT_STATUS_IS_OK(nt_status)) {
 308                 x_fprintf(x_stdout, "NA %s\n", nt_errstr(nt_status));
 309                 DEBUG(10, ("NTLMSSP %s\n", nt_errstr(nt_status)));
 310         } else {
 311                 x_fprintf(x_stdout, "AF %s\\%s\n", ntlmssp_state->domain, ntlmssp_state->user);
 312                 DEBUG(10, ("NTLMSSP OK!\n"));
 313         }
 314
 315         data_blob_free(&request);
 316 }
 317
 318 static void manage_squid_basic_request(enum squid_mode squid_mode,
 319                                        char *buf, int length)
 320 {
 321         char *user, *pass;
 322         user=buf;
 323
 324         pass=memchr(buf,' ',length);
 325         if (!pass) {
 326                 DEBUG(2, ("Password not found. Denying access\n"));
 327                 x_fprintf(x_stderr, "ERR\n");
 328                 return;
 329         }
 330         *pass='\0';
 331         pass++;
 332
 333         if (squid_mode == SQUID_2_5_BASIC) {
 334                 rfc1738_unescape(user);
 335                 rfc1738_unescape(pass);
 336         }
 337
 338         if (check_plaintext_auth(user, pass, False)) {
 339                 x_fprintf(x_stdout, "OK\n");
 340         } else {
 341                 x_fprintf(x_stdout, "ERR\n");
 342         }
 343 }
 344
 345 static void manage_squid_request(enum squid_mode squid_mode)
 346 {
 347         char buf[SQUID_BUFFER_SIZE+1];
 348         int length;
 349         char *c;
 350         static BOOL err;
 351
 352         /* this is not a typo - x_fgets doesn't work too well under squid */
 353         if (fgets(buf, sizeof(buf)-1, stdin) == NULL) {
 354                 DEBUG(1, ("fgets() failed! dying..... errno=%d (%s)\n", ferror(stdin),
 355                           strerror(ferror(stdin))));
 356                 exit(1);    /* BIIG buffer */
 357         }
 358
 359         c=memchr(buf,'\n',sizeof(buf)-1);
 360         if (c) {
 361                 *c = '\0';
 362                 length = c-buf;
 363         } else {
 364                 err = 1;
 365                 return;
 366         }
 367         if (err) {
 368                 DEBUG(2, ("Oversized message\n"));
 369                 x_fprintf(x_stderr, "ERR\n");
 370                 err = 0;
 371                 return;
 372         }
 373
 374         DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
 375
 376         if (buf[0] == '\0') {
 377                 DEBUG(2, ("Invalid Request\n"));
 378                 x_fprintf(x_stderr, "ERR\n");
 379                 return;
 380         }
 381
 382         if (squid_mode == SQUID_2_5_BASIC || squid_mode == SQUID_2_4_BASIC) {
 383                 manage_squid_basic_request(squid_mode, buf, length);
 384         } else if (squid_mode == SQUID_2_5_NTLMSSP) {
 385                 manage_squid_ntlmssp_request(squid_mode, buf, length);
 386         }
 387 }
 388
 389
 390 static void squid_stream(enum squid_mode squid_mode) {
 391         /* initialize FDescs */
 392         x_setbuf(x_stdout, NULL);
 393         x_setbuf(x_stderr, NULL);
 394         while(1) {
 395                 manage_squid_request(squid_mode);
 396         }
 397 }
 398
 399
 400 /* Authenticate a user with a challenge/response */
 401
 402 static BOOL check_auth_crap(void)
 403 {
 404         NTSTATUS nt_status;
 405         uint32 flags = 0;
 406         char lm_key[8];
 407         char nt_key[16];
 408         char *hex_lm_key;
 409         char *hex_nt_key;
 410         char *error_string;
 411         static uint8 zeros[16];
 412
 413         x_setbuf(x_stdout, NULL);
 414
 415         if (request_lm_key)
 416                 flags |= WBFLAG_PAM_LMKEY;
 417
 418         if (request_nt_key)
 419                 flags |= WBFLAG_PAM_NTKEY;
 420
 421         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
 422                                               opt_workstation,
 423                                               &opt_challenge,
 424                                               &opt_lm_response,
 425                                               &opt_nt_response,
 426                                               flags,
 427                                               lm_key,
 428                                               nt_key,
 429                                               &error_string);
 430
 431         if (!NT_STATUS_IS_OK(nt_status)) {
 432                 x_fprintf(x_stdout, "%s (0x%x)\n",
 433                           error_string,
 434                           NT_STATUS_V(nt_status));
 435                 SAFE_FREE(error_string);
 436                 return False;
 437         }
 438
 439         if (request_lm_key
 440             && (memcmp(zeros, lm_key,
 441                        sizeof(lm_key)) != 0)) {
 442                 hex_encode(lm_key,
 443                            sizeof(lm_key),
 444                            &hex_lm_key);
 445                 x_fprintf(x_stdout, "LM_KEY: %s\n", hex_lm_key);
 446                 SAFE_FREE(hex_lm_key);
 447         }
 448         if (request_nt_key
 449             && (memcmp(zeros, nt_key,
 450                        sizeof(nt_key)) != 0)) {
 451                 hex_encode(nt_key,
 452                            sizeof(nt_key),
 453                            &hex_nt_key);
 454                 x_fprintf(x_stdout, "NT_KEY: %s\n", hex_nt_key);
 455                 SAFE_FREE(hex_nt_key);
 456         }
 457
 458         return True;
 459 }
 460
 461 /*
 462    Authenticate a user with a challenge/response, checking session key
 463    and valid authentication types
 464 */
 465
 466 static DATA_BLOB get_challenge(void)
 467 {
 468         static DATA_BLOB chal;
 469         if (opt_challenge.length)
 470                 return opt_challenge;
 471
 472         chal = data_blob(NULL, 8);
 473
 474         generate_random_buffer(chal.data, chal.length, False);
 475         return chal;
 476 }
 477
 478 /*
 479  * Test LM authentication, no NT response supplied
 480  */
 481
 482 static BOOL test_lm(void)
 483 {
 484         NTSTATUS nt_status;
 485         uint32 flags = 0;
 486         DATA_BLOB lm_response = data_blob(NULL, 24);
 487
 488         uchar lm_key[8];
 489         uchar nt_key[16];
 490         uchar lm_hash[16];
 491         DATA_BLOB chall = get_challenge();
 492         char *error_string;
 493
 494         ZERO_STRUCT(lm_key);
 495         ZERO_STRUCT(nt_key);
 496
 497         flags |= WBFLAG_PAM_LMKEY;
 498         flags |= WBFLAG_PAM_NTKEY;
 499
 500         SMBencrypt(opt_password, chall.data, lm_response.data);
 501         E_deshash(opt_password, lm_hash);
 502
 503         nt_status = contact_winbind_auth_crap(opt_username, opt_domain, opt_workstation,
 504                                               &chall,
 505                                               &lm_response,
 506                                               NULL,
 507                                               flags,
 508                                               lm_key,
 509                                               nt_key,
 510                                               &error_string);
 511
 512         data_blob_free(&lm_response);
 513
 514         if (!NT_STATUS_IS_OK(nt_status)) {
 515                 d_printf("%s (0x%x)\n",
 516                          error_string,
 517                          NT_STATUS_V(nt_status));
 518                 return False;
 519         }
 520
 521         if (memcmp(lm_hash, lm_key,
 522                    sizeof(lm_key)) != 0) {
 523                 DEBUG(1, ("LM Key does not match expectations!\n"));
 524                 DEBUG(1, ("lm_key:\n"));
 525                 dump_data(1, lm_key, 8);
 526                 DEBUG(1, ("expected:\n"));
 527                 dump_data(1, lm_hash, 8);
 528         }
 529         if (memcmp(lm_hash, nt_key, 8) != 0) {
 530                 DEBUG(1, ("Session Key (first 8, lm hash) does not match expectations!\n"));
 531                 DEBUG(1, ("nt_key:\n"));
 532                 dump_data(1, nt_key, 8);
 533                 DEBUG(1, ("expected:\n"));
 534                 dump_data(1, lm_hash, 8);
 535         }
 536         return True;
 537 }
 538
 539 /*
 540  * Test the normal 'LM and NTLM' combination
 541  */
 542
 543 static BOOL test_lm_ntlm(void)
 544 {
 545         BOOL pass = True;
 546         NTSTATUS nt_status;
 547         uint32 flags = 0;
 548         DATA_BLOB lm_response = data_blob(NULL, 24);
 549         DATA_BLOB nt_response = data_blob(NULL, 24);
 550         DATA_BLOB session_key = data_blob(NULL, 16);
 551
 552         uchar lm_key[8];
 553         uchar nt_key[16];
 554         uchar lm_hash[16];
 555         uchar nt_hash[16];
 556         DATA_BLOB chall = get_challenge();
 557         char *error_string;
 558
 559         ZERO_STRUCT(lm_key);
 560         ZERO_STRUCT(nt_key);
 561
 562         flags |= WBFLAG_PAM_LMKEY;
 563         flags |= WBFLAG_PAM_NTKEY;
 564
 565         SMBencrypt(opt_password,chall.data,lm_response.data);
 566         E_deshash(opt_password, lm_hash);
 567
 568         SMBNTencrypt(opt_password,chall.data,nt_response.data);
 569
 570         E_md4hash(opt_password, nt_hash);
 571         SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
 572
 573         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
 574                                               opt_workstation,
 575                                               &chall,
 576                                               &lm_response,
 577                                               &nt_response,
 578                                               flags,
 579                                               lm_key,
 580                                               nt_key,
 581                                               &error_string);
 582
 583         data_blob_free(&lm_response);
 584
 585         if (!NT_STATUS_IS_OK(nt_status)) {
 586                 d_printf("%s (0x%x)\n",
 587                          error_string,
 588                          NT_STATUS_V(nt_status));
 589                 SAFE_FREE(error_string);
 590                 return False;
 591         }
 592
 593         if (memcmp(lm_hash, lm_key,
 594                    sizeof(lm_key)) != 0) {
 595                 DEBUG(1, ("LM Key does not match expectations!\n"));
 596                 DEBUG(1, ("lm_key:\n"));
 597                 dump_data(1, lm_key, 8);
 598                 DEBUG(1, ("expected:\n"));
 599                 dump_data(1, lm_hash, 8);
 600                 pass = False;
 601         }
 602         if (memcmp(session_key.data, nt_key,
 603                    sizeof(nt_key)) != 0) {
 604                 DEBUG(1, ("NT Session Key does not match expectations!\n"));
 605                 DEBUG(1, ("nt_key:\n"));
 606                 dump_data(1, nt_key, 16);
 607                 DEBUG(1, ("expected:\n"));
 608                 dump_data(1, session_key.data, session_key.length);
 609                 pass = False;
 610         }
 611         return pass;
 612 }
 613
 614 /*
 615  * Test the NTLM response only, no LM.
 616  */
 617
 618 static BOOL test_ntlm(void)
 619 {
 620         BOOL pass = True;
 621         NTSTATUS nt_status;
 622         uint32 flags = 0;
 623         DATA_BLOB nt_response = data_blob(NULL, 24);
 624         DATA_BLOB session_key = data_blob(NULL, 16);
 625
 626         char lm_key[8];
 627         char nt_key[16];
 628         char lm_hash[16];
 629         char nt_hash[16];
 630         DATA_BLOB chall = get_challenge();
 631         char *error_string;
 632
 633         ZERO_STRUCT(lm_key);
 634         ZERO_STRUCT(nt_key);
 635
 636         flags |= WBFLAG_PAM_LMKEY;
 637         flags |= WBFLAG_PAM_NTKEY;
 638
 639         SMBNTencrypt(opt_password,chall.data,nt_response.data);
 640         E_md4hash(opt_password, nt_hash);
 641         SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
 642
 643         E_deshash(opt_password, lm_hash);
 644
 645         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
 646                                               opt_workstation,
 647                                               &chall,
 648                                               NULL,
 649                                               &nt_response,
 650                                               flags,
 651                                               lm_key,
 652                                               nt_key,
 653                                               &error_string);
 654
 655         data_blob_free(&nt_response);
 656
 657         if (!NT_STATUS_IS_OK(nt_status)) {
 658                 d_printf("%s (0x%x)\n",
 659                          error_string,
 660                          NT_STATUS_V(nt_status));
 661                 SAFE_FREE(error_string);
 662                 return False;
 663         }
 664
 665         if (memcmp(lm_hash, lm_key,
 666                    sizeof(lm_key)) != 0) {
 667                 DEBUG(1, ("LM Key does not match expectations!\n"));
 668                 DEBUG(1, ("lm_key:\n"));
 669                 dump_data(1, lm_key, 8);
 670                 DEBUG(1, ("expected:\n"));
 671                 dump_data(1, lm_hash, 8);
 672                 pass = False;
 673         }
 674         if (memcmp(session_key.data, nt_key,
 675                    sizeof(nt_key)) != 0) {
 676                 DEBUG(1, ("NT Session Key does not match expectations!\n"));
 677                 DEBUG(1, ("nt_key:\n"));
 678                 dump_data(1, nt_key, 16);
 679                 DEBUG(1, ("expected:\n"));
 680                 dump_data(1, session_key.data, session_key.length);
 681                 pass = False;
 682         }
 683         return pass;
 684 }
 685
 686 /*
 687  * Test the NTLM response only, but in the LM field.
 688  */
 689
 690 static BOOL test_ntlm_in_lm(void)
 691 {
 692         BOOL pass = True;
 693         NTSTATUS nt_status;
 694         uint32 flags = 0;
 695         DATA_BLOB nt_response = data_blob(NULL, 24);
 696
 697         uchar lm_key[8];
 698         uchar lm_hash[16];
 699         uchar nt_key[16];
 700         DATA_BLOB chall = get_challenge();
 701         char *error_string;
 702
 703         ZERO_STRUCT(nt_key);
 704
 705         flags |= WBFLAG_PAM_LMKEY;
 706         flags |= WBFLAG_PAM_NTKEY;
 707
 708         SMBNTencrypt(opt_password,chall.data,nt_response.data);
 709
 710         E_deshash(opt_password, lm_hash);
 711
 712         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
 713                                               opt_workstation,
 714                                               &chall,
 715                                               &nt_response,
 716                                               NULL,
 717                                               flags,
 718                                               lm_key,
 719                                               nt_key,
 720                                               &error_string);
 721
 722         data_blob_free(&nt_response);
 723
 724         if (!NT_STATUS_IS_OK(nt_status)) {
 725                 d_printf("%s (0x%x)\n",
 726                          error_string,
 727                          NT_STATUS_V(nt_status));
 728                 SAFE_FREE(error_string);
 729                 return False;
 730         }
 731
 732         if (memcmp(lm_hash, lm_key,
 733                    sizeof(lm_key)) != 0) {
 734                 DEBUG(1, ("LM Key does not match expectations!\n"));
 735                 DEBUG(1, ("lm_key:\n"));
 736                 dump_data(1, lm_key, 8);
 737                 DEBUG(1, ("expected:\n"));
 738                 dump_data(1, lm_hash, 8);
 739                 pass = False;
 740         }
 741         if (memcmp(lm_hash, nt_key, 8) != 0) {
 742                 DEBUG(1, ("Session Key (first 8 lm hash) does not match expectations!\n"));
 743                 DEBUG(1, ("nt_key:\n"));
 744                 dump_data(1, nt_key, 16);
 745                 DEBUG(1, ("expected:\n"));
 746                 dump_data(1, lm_hash, 8);
 747                 pass = False;
 748         }
 749         return pass;
 750 }
 751
 752 /*
 753  * Test the NTLM response only, but in the both the NT and LM fields.
 754  */
 755
 756 static BOOL test_ntlm_in_both(void)
 757 {
 758         BOOL pass = True;
 759         NTSTATUS nt_status;
 760         uint32 flags = 0;
 761         DATA_BLOB nt_response = data_blob(NULL, 24);
 762         DATA_BLOB session_key = data_blob(NULL, 16);
 763
 764         char lm_key[8];
 765         char lm_hash[16];
 766         char nt_key[16];
 767         char nt_hash[16];
 768         DATA_BLOB chall = get_challenge();
 769         char *error_string;
 770
 771         ZERO_STRUCT(lm_key);
 772         ZERO_STRUCT(nt_key);
 773
 774         flags |= WBFLAG_PAM_LMKEY;
 775         flags |= WBFLAG_PAM_NTKEY;
 776
 777         SMBNTencrypt(opt_password,chall.data,nt_response.data);
 778         E_md4hash(opt_password, nt_hash);
 779         SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
 780
 781         E_deshash(opt_password, lm_hash);
 782
 783         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
 784                                               opt_workstation,
 785                                               &chall,
 786                                               &nt_response,
 787                                               &nt_response,
 788                                               flags,
 789                                               lm_key,
 790                                               nt_key,
 791                                               &error_string);
 792
 793         data_blob_free(&nt_response);
 794
 795         if (!NT_STATUS_IS_OK(nt_status)) {
 796                 d_printf("%s (0x%x)\n",
 797                          error_string,
 798                          NT_STATUS_V(nt_status));
 799                 SAFE_FREE(error_string);
 800                 return False;
 801         }
 802
 803         if (memcmp(lm_hash, lm_key,
 804                    sizeof(lm_key)) != 0) {
 805                 DEBUG(1, ("LM Key does not match expectations!\n"));
 806                 DEBUG(1, ("lm_key:\n"));
 807                 dump_data(1, lm_key, 8);
 808                 DEBUG(1, ("expected:\n"));
 809                 dump_data(1, lm_hash, 8);
 810                 pass = False;
 811         }
 812         if (memcmp(session_key.data, nt_key,
 813                    sizeof(nt_key)) != 0) {
 814                 DEBUG(1, ("NT Session Key does not match expectations!\n"));
 815                 DEBUG(1, ("nt_key:\n"));
 816                 dump_data(1, nt_key, 16);
 817                 DEBUG(1, ("expected:\n"));
 818                 dump_data(1, session_key.data, session_key.length);
 819                 pass = False;
 820         }
 821
 822
 823         return pass;
 824 }
 825
 826 /*
 827  * Test the NTLMv2 response only
 828  */
 829
 830 static BOOL test_ntlmv2(void)
 831 {
 832         BOOL pass = True;
 833         NTSTATUS nt_status;
 834         uint32 flags = 0;
 835         DATA_BLOB ntlmv2_response = data_blob(NULL, 0);
 836         DATA_BLOB nt_session_key = data_blob(NULL, 0);
 837         DATA_BLOB names_blob = NTLMv2_generate_names_blob(get_winbind_netbios_name(), get_winbind_domain());
 838
 839         uchar nt_key[16];
 840         DATA_BLOB chall = get_challenge();
 841         char *error_string;
 842
 843         ZERO_STRUCT(nt_key);
 844
 845         flags |= WBFLAG_PAM_NTKEY;
 846
 847         if (!SMBNTLMv2encrypt(opt_username, opt_domain, opt_password, &chall,
 848                               &names_blob,
 849                               NULL, &ntlmv2_response,
 850                               &nt_session_key)) {
 851                 data_blob_free(&names_blob);
 852                 return False;
 853         }
 854         data_blob_free(&names_blob);
 855
 856         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
 857                                               opt_workstation,
 858                                               &chall,
 859                                               NULL,
 860                                               &ntlmv2_response,
 861                                               flags,
 862                                               NULL,
 863                                               nt_key,
 864                                               &error_string);
 865
 866         data_blob_free(&ntlmv2_response);
 867
 868         if (!NT_STATUS_IS_OK(nt_status)) {
 869                 d_printf("%s (0x%x)\n",
 870                          error_string,
 871                          NT_STATUS_V(nt_status));
 872                 SAFE_FREE(error_string);
 873                 return False;
 874         }
 875
 876         if (memcmp(nt_session_key.data, nt_key,
 877                    sizeof(nt_key)) != 0) {
 878                 DEBUG(1, ("NT Session Key does not match expectations!\n"));
 879                 DEBUG(1, ("nt_key:\n"));
 880                 dump_data(1, nt_key, 16);
 881                 DEBUG(1, ("expected:\n"));
 882                 dump_data(1, nt_session_key.data, nt_session_key.length);
 883                 pass = False;
 884         }
 885         return pass;
 886 }
 887
 888 /*
 889  * Test the NTLMv2 and LMv2 responses
 890  */
 891
 892 static BOOL test_lmv2_ntlmv2(void)
 893 {
 894         BOOL pass = True;
 895         NTSTATUS nt_status;
 896         uint32 flags = 0;
 897         DATA_BLOB ntlmv2_response = data_blob(NULL, 0);
 898         DATA_BLOB lmv2_response = data_blob(NULL, 0);
 899         DATA_BLOB nt_session_key = data_blob(NULL, 0);
 900         DATA_BLOB names_blob = NTLMv2_generate_names_blob(get_winbind_netbios_name(), get_winbind_domain());
 901
 902         uchar nt_key[16];
 903         DATA_BLOB chall = get_challenge();
 904         char *error_string;
 905
 906         ZERO_STRUCT(nt_key);
 907
 908         flags |= WBFLAG_PAM_NTKEY;
 909
 910         if (!SMBNTLMv2encrypt(opt_username, opt_domain, opt_password, &chall,
 911                               &names_blob,
 912                               &lmv2_response, &ntlmv2_response,
 913                               &nt_session_key)) {
 914                 data_blob_free(&names_blob);
 915                 return False;
 916         }
 917         data_blob_free(&names_blob);
 918
 919         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
 920                                               opt_workstation,
 921                                               &chall,
 922                                               &lmv2_response,
 923                                               &ntlmv2_response,
 924                                               flags,
 925                                               NULL,
 926                                               nt_key,
 927                                               &error_string);
 928
 929         data_blob_free(&lmv2_response);
 930         data_blob_free(&ntlmv2_response);
 931
 932         if (!NT_STATUS_IS_OK(nt_status)) {
 933                 d_printf("%s (0x%x)\n",
 934                          error_string,
 935                          NT_STATUS_V(nt_status));
 936                 SAFE_FREE(error_string);
 937                 return False;
 938         }
 939
 940         if (memcmp(nt_session_key.data, nt_key,
 941                    sizeof(nt_key)) != 0) {
 942                 DEBUG(1, ("NT Session Key does not match expectations!\n"));
 943                 DEBUG(1, ("nt_key:\n"));
 944                 dump_data(1, nt_key, 16);
 945                 DEBUG(1, ("expected:\n"));
 946                 dump_data(1, nt_session_key.data, nt_session_key.length);
 947                 pass = False;
 948         }
 949         return pass;
 950 }
 951
 952 /*
 953  * Test the LMv2 response only
 954  */
 955
 956 static BOOL test_lmv2(void)
 957 {
 958         BOOL pass = True;
 959         NTSTATUS nt_status;
 960         uint32 flags = 0;
 961         DATA_BLOB lmv2_response = data_blob(NULL, 0);
 962
 963         DATA_BLOB chall = get_challenge();
 964         char *error_string;
 965
 966         if (!SMBNTLMv2encrypt(opt_username, opt_domain, opt_password, &chall,
 967                               NULL,
 968                               &lmv2_response, NULL,
 969                               NULL)) {
 970                 return False;
 971         }
 972
 973         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
 974                                               opt_workstation,
 975                                               &chall,
 976                                               &lmv2_response,
 977                                               NULL,
 978                                               flags,
 979                                               NULL,
 980                                               NULL,
 981                                               &error_string);
 982
 983         data_blob_free(&lmv2_response);
 984
 985         if (!NT_STATUS_IS_OK(nt_status)) {
 986                 d_printf("%s (0x%x)\n",
 987                          error_string,
 988                          NT_STATUS_V(nt_status));
 989                 SAFE_FREE(error_string);
 990                 return False;
 991         }
 992
 993         return pass;
 994 }
 995
 996 /*
 997  * Test the normal 'LM and NTLM' combination but deliberately break one
 998  */
 999
1000 static BOOL test_ntlm_broken(BOOL break_lm)
1001 {
1002         BOOL pass = True;
1003         NTSTATUS nt_status;
1004         uint32 flags = 0;
1005         DATA_BLOB lm_response = data_blob(NULL, 24);
1006         DATA_BLOB nt_response = data_blob(NULL, 24);
1007         DATA_BLOB session_key = data_blob(NULL, 16);
1008
1009         uchar lm_key[8];
1010         uchar nt_key[16];
1011         uchar lm_hash[16];
1012         uchar nt_hash[16];
1013         DATA_BLOB chall = get_challenge();
1014         char *error_string;
1015
1016         ZERO_STRUCT(lm_key);
1017         ZERO_STRUCT(nt_key);
1018
1019         flags |= WBFLAG_PAM_LMKEY;
1020         flags |= WBFLAG_PAM_NTKEY;
1021
1022         SMBencrypt(opt_password,chall.data,lm_response.data);
1023         E_deshash(opt_password, lm_hash);
1024
1025         SMBNTencrypt(opt_password,chall.data,nt_response.data);
1026
1027         E_md4hash(opt_password, nt_hash);
1028         SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
1029
1030         if (break_lm)
1031                 lm_response.data[0]++;
1032         else
1033                 nt_response.data[0]++;
1034
1035         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
1036                                               opt_workstation,
1037                                               &chall,
1038                                               &lm_response,
1039                                               &nt_response,
1040                                               flags,
1041                                               lm_key,
1042                                               nt_key,
1043                                               &error_string);
1044
1045         data_blob_free(&lm_response);
1046
1047         if (!NT_STATUS_IS_OK(nt_status)) {
1048                 d_printf("%s (0x%x)\n",
1049                          error_string,
1050                          NT_STATUS_V(nt_status));
1051                 SAFE_FREE(error_string);
1052                 return False;
1053         }
1054
1055         if (memcmp(lm_hash, lm_key,
1056                    sizeof(lm_key)) != 0) {
1057                 DEBUG(1, ("LM Key does not match expectations!\n"));
1058                 DEBUG(1, ("lm_key:\n"));
1059                 dump_data(1, lm_key, 8);
1060                 DEBUG(1, ("expected:\n"));
1061                 dump_data(1, lm_hash, 8);
1062                 pass = False;
1063         }
1064         if (memcmp(session_key.data, nt_key,
1065                    sizeof(nt_key)) != 0) {
1066                 DEBUG(1, ("NT Session Key does not match expectations!\n"));
1067                 DEBUG(1, ("nt_key:\n"));
1068                 dump_data(1, nt_key, 16);
1069                 DEBUG(1, ("expected:\n"));
1070                 dump_data(1, session_key.data, session_key.length);
1071                 pass = False;
1072         }
1073         return pass;
1074 }
1075
1076 static BOOL test_ntlm_lm_broken(void)
1077 {
1078         return test_ntlm_broken(True);
1079 }
1080
1081 static BOOL test_ntlm_ntlm_broken(void)
1082 {
1083         return test_ntlm_broken(False);
1084 }
1085
1086 static BOOL test_ntlmv2_broken(BOOL break_lmv2)
1087 {
1088         BOOL pass = True;
1089         NTSTATUS nt_status;
1090         uint32 flags = 0;
1091         DATA_BLOB ntlmv2_response = data_blob(NULL, 0);
1092         DATA_BLOB lmv2_response = data_blob(NULL, 0);
1093         DATA_BLOB nt_session_key = data_blob(NULL, 0);
1094         DATA_BLOB names_blob = NTLMv2_generate_names_blob(get_winbind_netbios_name(), get_winbind_domain());
1095
1096         uchar nt_key[16];
1097         DATA_BLOB chall = get_challenge();
1098         char *error_string;
1099
1100         ZERO_STRUCT(nt_key);
1101
1102         flags |= WBFLAG_PAM_NTKEY;
1103
1104         if (!SMBNTLMv2encrypt(opt_username, opt_domain, opt_password, &chall,
1105                               &names_blob,
1106                               &lmv2_response, &ntlmv2_response,
1107                               &nt_session_key)) {
1108                 data_blob_free(&names_blob);
1109                 return False;
1110         }
1111         data_blob_free(&names_blob);
1112
1113         /* Heh - this should break the appropriate password hash nicely! */
1114
1115         if (break_lmv2)
1116                 lmv2_response.data[0]++;
1117         else
1118                 ntlmv2_response.data[0]++;
1119
1120         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
1121                                               opt_workstation,
1122                                               &chall,
1123                                               &lmv2_response,
1124                                               &ntlmv2_response,
1125                                               flags,
1126                                               NULL,
1127                                               nt_key,
1128                                               &error_string);
1129
1130         data_blob_free(&lmv2_response);
1131         data_blob_free(&ntlmv2_response);
1132
1133         if (!NT_STATUS_IS_OK(nt_status)) {
1134                 d_printf("%s (0x%x)\n",
1135                          error_string,
1136                          NT_STATUS_V(nt_status));
1137                 SAFE_FREE(error_string);
1138                 return False;
1139         }
1140
1141         return pass;
1142 }
1143
1144 static BOOL test_ntlmv2_lmv2_broken(void)
1145 {
1146         return test_ntlmv2_broken(True);
1147 }
1148
1149 static BOOL test_ntlmv2_ntlmv2_broken(void)
1150 {
1151         return test_ntlmv2_broken(False);
1152 }
1153
1154 /*
1155    Tests:
1156
1157    - LM only
1158    - NT and LM
1159    - NT
1160    - NT in LM field
1161    - NT in both fields
1162    - NTLMv2
1163    - NTLMv2 and LMv2
1164    - LMv2
1165
1166    check we get the correct session key in each case
1167    check what values we get for the LM session key
1168
1169 */
1170
1171 struct ntlm_tests {
1172         BOOL (*fn)(void);
1173         const char *name;
1174 } test_table[] = {
1175         {test_lm, "LM"},
1176         {test_lm_ntlm, "LM and NTLM"},
1177         {test_ntlm, "NTLM"},
1178         {test_ntlm_in_lm, "NTLM in LM"},
1179         {test_ntlm_in_both, "NTLM in both"},
1180         {test_ntlmv2, "NTLMv2"},
1181         {test_lmv2_ntlmv2, "NTLMv2 and LMv2"},
1182         {test_lmv2, "LMv2"},
1183         {test_ntlmv2_lmv2_broken, "NTLMv2 and LMv2, LMv2 broken"},
1184         {test_ntlmv2_ntlmv2_broken, "NTLMv2 and LMv2, NTLMv2 broken"},
1185         {test_ntlm_lm_broken, "NTLM and LM, LM broken"},
1186         {test_ntlm_ntlm_broken, "NTLM and LM, NTLM broken"}
1187 };
1188
1189 static BOOL diagnose_ntlm_auth(void)
1190 {
1191         unsigned int i;
1192         BOOL pass = True;
1193
1194         for (i=0; test_table[i].fn; i++) {
1195                 if (!test_table[i].fn()) {
1196                         DEBUG(1, ("Test %s failed!\n", test_table[i].name));
1197                         pass = False;
1198                 }
1199         }
1200
1201         return pass;
1202 }
1203
1204 /* Main program */
1205
1206 enum {
1207         OPT_USERNAME = 1000,
1208         OPT_DOMAIN,
1209         OPT_WORKSTATION,
1210         OPT_CHALLENGE,
1211         OPT_RESPONSE,
1212         OPT_LM,
1213         OPT_NT,
1214         OPT_PASSWORD,
1215         OPT_LM_KEY,
1216         OPT_NT_KEY,
1217         OPT_DIAGNOSTICS
1218 };
1219
1220  int main(int argc, const char **argv)
1221 {
1222         int opt;
1223         static const char *helper_protocol;
1224         static int diagnostics;
1225
1226         static const char *hex_challenge;
1227         static const char *hex_lm_response;
1228         static const char *hex_nt_response;
1229         char *challenge;
1230         char *lm_response;
1231         char *nt_response;
1232         size_t challenge_len;
1233         size_t lm_response_len;
1234         size_t nt_response_len;
1235
1236         poptContext pc;
1237
1238         /* NOTE: DO NOT change this interface without considering the implications!
1239            This is an external interface, which other programs will use to interact
1240            with this helper.
1241         */
1242
1243         /* We do not use single-letter command abbreviations, because they harm future
1244            interface stability. */
1245
1246         struct poptOption long_options[] = {
1247                 POPT_AUTOHELP
1248                 { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
1249                 { "username", 0, POPT_ARG_STRING, &opt_username, OPT_USERNAME, "username"},
1250                 { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
1251                 { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
1252                 { "challenge", 0, POPT_ARG_STRING, &hex_challenge, OPT_CHALLENGE, "challenge (HEX encoded)"},
1253                 { "lm-response", 0, POPT_ARG_STRING, &hex_lm_response, OPT_LM, "LM Response to the challenge (HEX encoded)"},
1254                 { "nt-response", 0, POPT_ARG_STRING, &hex_nt_response, OPT_NT, "NT or NTLMv2 Response to the challenge (HEX encoded)"},
1255                 { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
1256                 { "request-lm-key", 0, POPT_ARG_NONE, &request_lm_key, OPT_LM_KEY, "Retreive LM session key"},
1257                 { "request-nt-key", 0, POPT_ARG_NONE, &request_nt_key, OPT_NT_KEY, "Retreive NT session key"},
1258                 { "diagnostics", 0, POPT_ARG_NONE, &diagnostics, OPT_DIAGNOSTICS, "Perform diagnostics on the authentictaion chain"},
1259                 POPT_COMMON_SAMBA
1260                 POPT_TABLEEND
1261         };
1262
1263         /* Samba client initialisation */
1264
1265         dbf = x_stderr;
1266
1267         /* Samba client initialisation */
1268
1269         if (!lp_load(dyn_CONFIGFILE, True, False, False)) {
1270                 d_fprintf(stderr, "wbinfo: error opening config file %s. Error was %s\n",
1271                         dyn_CONFIGFILE, strerror(errno));
1272                 exit(1);
1273         }
1274
1275         /* Parse options */
1276
1277         pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
1278
1279         /* Parse command line options */
1280
1281         if (argc == 1) {
1282                 poptPrintHelp(pc, stderr, 0);
1283                 return 1;
1284         }
1285
1286         pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
1287                             POPT_CONTEXT_KEEP_FIRST);
1288
1289         while((opt = poptGetNextOpt(pc)) != -1) {
1290                 switch (opt) {
1291                 case OPT_CHALLENGE:
1292                         challenge = smb_xmalloc((strlen(hex_challenge))/2+1);
1293                         if ((challenge_len = strhex_to_str(challenge,
1294                                                            strlen(hex_challenge),
1295                                                            hex_challenge)) != 8) {
1296                                 x_fprintf(x_stderr, "hex decode of %s failed (only got %u bytes)!\n",
1297                                         hex_challenge, challenge_len);
1298                                 exit(1);
1299                         }
1300                         opt_challenge = data_blob(challenge, challenge_len);
1301                         SAFE_FREE(challenge);
1302                         break;
1303                 case OPT_LM:
1304                         lm_response = smb_xmalloc((strlen(hex_lm_response))/2+1);
1305                         lm_response_len = strhex_to_str(lm_response,
1306                                                         strlen(hex_lm_response),
1307                                                         hex_lm_response);
1308                         if (lm_response_len != 24) {
1309                                 x_fprintf(x_stderr, "hex decode of %s failed!\n", hex_lm_response);
1310                                 exit(1);
1311                         }
1312                         opt_lm_response = data_blob(lm_response, lm_response_len);
1313                         SAFE_FREE(lm_response);
1314                         break;
1315                 case OPT_NT:
1316                         nt_response = smb_xmalloc((strlen(hex_nt_response)+2)/2+1);
1317                         nt_response_len = strhex_to_str(nt_response,
1318                                                         strlen(hex_nt_response),
1319                                                         hex_nt_response);
1320                         if (nt_response_len < 24) {
1321                                 x_fprintf(x_stderr, "hex decode of %s failed!\n", hex_nt_response);
1322                                 exit(1);
1323                         }
1324                         opt_nt_response = data_blob(nt_response, nt_response_len);
1325                         SAFE_FREE(nt_response);
1326                         break;
1327                 }
1328         }
1329
1330         if (helper_protocol) {
1331                 if (strcmp(helper_protocol, "squid-2.5-ntlmssp")== 0) {
1332                         squid_stream(SQUID_2_5_NTLMSSP);
1333                 } else if (strcmp(helper_protocol, "squid-2.5-basic")== 0) {
1334                         squid_stream(SQUID_2_5_BASIC);
1335                 } else if (strcmp(helper_protocol, "squid-2.4-basic")== 0) {
1336                         squid_stream(SQUID_2_4_BASIC);
1337                 } else {
1338                         x_fprintf(x_stderr, "unknown helper protocol [%s]\n", helper_protocol);
1339                         exit(1);
1340                 }
1341         }
1342
1343         if (!opt_username) {
1344                 x_fprintf(x_stderr, "username must be specified!\n\n");
1345                 poptPrintHelp(pc, stderr, 0);
1346                 exit(1);
1347         }
1348
1349         if (opt_domain == NULL) {
1350                 opt_domain = get_winbind_domain();
1351         }
1352
1353         if (opt_workstation == NULL) {
1354                 opt_workstation = "";
1355         }
1356
1357         if (opt_challenge.length) {
1358                 if (!check_auth_crap()) {
1359                         exit(1);
1360                 }
1361                 exit(0);
1362         }
1363
1364         if (!opt_password) {
1365                 opt_password = getpass("password: ");
1366         }
1367
1368         if (diagnostics) {
1369                 if (!diagnose_ntlm_auth()) {
1370                         exit(1);
1371                 }
1372         } else {
1373                 fstring user;
1374
1375                 snprintf(user, sizeof(user)-1, "%s%c%s", opt_domain, winbind_separator(), opt_username);
1376                 if (!check_plaintext_auth(user, opt_password, True)) {
1377                         exit(1);
1378                 }
1379         }
1380
1381         /* Exit code */
1382
1383         poptFreeContext(pc);
1384         return 0;
1385 }