source3/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 *helper_protocol;
  42 static const char *opt_username;
  43 static const char *opt_domain;
  44 static const char *opt_workstation;
  45 static const char *opt_password;
  46 static DATA_BLOB opt_challenge;
  47 static DATA_BLOB opt_lm_response;
  48 static DATA_BLOB opt_nt_response;
  49 static int request_lm_key;
  50 static int request_nt_key;
  51 static int diagnostics;
  52
  53
  54 static char winbind_separator(void)
  55 {
  56         struct winbindd_response response;
  57         static BOOL got_sep;
  58         static char sep;
  59
  60         if (got_sep)
  61                 return sep;
  62
  63         ZERO_STRUCT(response);
  64
  65         /* Send off request */
  66
  67         if (winbindd_request(WINBINDD_INFO, NULL, &response) !=
  68             NSS_STATUS_SUCCESS) {
  69                 d_printf("could not obtain winbind separator!\n");
  70                 return '\\';
  71         }
  72
  73         sep = response.data.info.winbind_separator;
  74         got_sep = True;
  75
  76         if (!sep) {
  77                 d_printf("winbind separator was NULL!\n");
  78                 return '\\';
  79         }
  80
  81         return sep;
  82 }
  83
  84 static const char *get_winbind_domain(void)
  85 {
  86         struct winbindd_response response;
  87
  88         static fstring winbind_domain;
  89         if (*winbind_domain) {
  90                 return winbind_domain;
  91         }
  92
  93         ZERO_STRUCT(response);
  94
  95         /* Send off request */
  96
  97         if (winbindd_request(WINBINDD_DOMAIN_NAME, NULL, &response) !=
  98             NSS_STATUS_SUCCESS) {
  99                 d_printf("could not obtain winbind domain name!\n");
 100                 return NULL;
 101         }
 102
 103         fstrcpy(winbind_domain, response.data.domain_name);
 104
 105         return winbind_domain;
 106
 107 }
 108
 109 static const char *get_winbind_netbios_name(void)
 110 {
 111         struct winbindd_response response;
 112
 113         static fstring winbind_netbios_name;
 114
 115         if (*winbind_netbios_name) {
 116                 return winbind_netbios_name;
 117         }
 118
 119         ZERO_STRUCT(response);
 120
 121         /* Send off request */
 122
 123         if (winbindd_request(WINBINDD_NETBIOS_NAME, NULL, &response) !=
 124             NSS_STATUS_SUCCESS) {
 125                 d_printf("could not obtain winbind netbios name!\n");
 126                 return NULL;
 127         }
 128
 129         fstrcpy(winbind_netbios_name, response.data.netbios_name);
 130
 131         return winbind_netbios_name;
 132
 133 }
 134
 135 /* Authenticate a user with a plaintext password */
 136
 137 static BOOL check_plaintext_auth(const char *user, const char *pass, BOOL stdout_diagnostics)
 138 {
 139         struct winbindd_request request;
 140         struct winbindd_response response;
 141         NSS_STATUS result;
 142
 143         /* Send off request */
 144
 145         ZERO_STRUCT(request);
 146         ZERO_STRUCT(response);
 147
 148         fstrcpy(request.data.auth.user, user);
 149         fstrcpy(request.data.auth.pass, pass);
 150
 151         result = winbindd_request(WINBINDD_PAM_AUTH, &request, &response);
 152
 153         /* Display response */
 154
 155         if (stdout_diagnostics) {
 156                 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
 157                         d_printf("Reading winbind reply failed! (0x01)\n");
 158                 }
 159
 160                 d_printf("%s: %s (0x%x)\n",
 161                          response.data.auth.nt_status_string,
 162                          response.data.auth.error_string,
 163                          response.data.auth.nt_status);
 164         } else {
 165                 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
 166                         DEBUG(1, ("Reading winbind reply failed! (0x01)\n"));
 167                 }
 168
 169                 DEBUG(3, ("%s: %s (0x%x)\n",
 170                           response.data.auth.nt_status_string,
 171                           response.data.auth.error_string,
 172                           response.data.auth.nt_status));
 173         }
 174
 175         return (result == NSS_STATUS_SUCCESS);
 176 }
 177
 178 /* authenticate a user with an encrypted username/password */
 179
 180 static NTSTATUS contact_winbind_auth_crap(const char *username,
 181                                           const char *domain,
 182                                           const char *workstation,
 183                                           const DATA_BLOB *challenge,
 184                                           const DATA_BLOB *lm_response,
 185                                           const DATA_BLOB *nt_response,
 186                                           uint32 flags,
 187                                           uint8 lm_key[16],
 188                                           uint8 nt_key[16],
 189                                           char **error_string)
 190 {
 191         NTSTATUS nt_status;
 192         NSS_STATUS result;
 193         struct winbindd_request request;
 194         struct winbindd_response response;
 195
 196         static uint8 zeros[16];
 197
 198         ZERO_STRUCT(request);
 199         ZERO_STRUCT(response);
 200
 201         request.data.auth_crap.flags = flags;
 202
 203         fstrcpy(request.data.auth_crap.user, username);
 204
 205         fstrcpy(request.data.auth_crap.domain, domain);
 206         fstrcpy(request.data.auth_crap.workstation, workstation);
 207
 208         memcpy(request.data.auth_crap.chal, challenge->data, MIN(challenge->length, 8));
 209
 210         if (lm_response && lm_response->length) {
 211                 memcpy(request.data.auth_crap.lm_resp, lm_response->data, MIN(lm_response->length, sizeof(request.data.auth_crap.lm_resp)));
 212                 request.data.auth_crap.lm_resp_len = lm_response->length;
 213         }
 214
 215         if (nt_response && nt_response->length) {
 216                 memcpy(request.data.auth_crap.nt_resp, nt_response->data, MIN(nt_response->length, sizeof(request.data.auth_crap.nt_resp)));
 217                 request.data.auth_crap.nt_resp_len = nt_response->length;
 218         }
 219
 220         result = winbindd_request(WINBINDD_PAM_AUTH_CRAP, &request, &response);
 221
 222         /* Display response */
 223
 224         if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
 225                 nt_status = NT_STATUS_UNSUCCESSFUL;
 226                 if (error_string)
 227                         *error_string = smb_xstrdup("Reading winbind reply failed!");
 228                 return nt_status;
 229         }
 230
 231         nt_status = (NT_STATUS(response.data.auth.nt_status));
 232         if (!NT_STATUS_IS_OK(nt_status)) {
 233                 if (error_string)
 234                         *error_string = smb_xstrdup(response.data.auth.error_string);
 235                 return nt_status;
 236         }
 237
 238         if ((flags & WINBIND_PAM_LMKEY) && lm_key
 239             && (memcmp(zeros, response.data.auth.first_8_lm_hash,
 240                        sizeof(response.data.auth.first_8_lm_hash)) != 0)) {
 241                 memcpy(lm_key, response.data.auth.first_8_lm_hash,
 242                         sizeof(response.data.auth.first_8_lm_hash));
 243         }
 244         if ((flags & WINBIND_PAM_NTKEY) && nt_key
 245                     && (memcmp(zeros, response.data.auth.nt_session_key,
 246                                sizeof(response.data.auth.nt_session_key)) != 0)) {
 247                 memcpy(nt_key, response.data.auth.nt_session_key,
 248                         sizeof(response.data.auth.nt_session_key));
 249         }
 250         return nt_status;
 251 }
 252
 253 static NTSTATUS winbind_pw_check(struct ntlmssp_state *ntlmssp_state)
 254 {
 255         return contact_winbind_auth_crap(ntlmssp_state->user, ntlmssp_state->domain,
 256                                          ntlmssp_state->workstation,
 257                                          &ntlmssp_state->chal,
 258                                          &ntlmssp_state->lm_resp,
 259                                          &ntlmssp_state->nt_resp,
 260                                          0,
 261                                          NULL,
 262                                          NULL,
 263                                          NULL);
 264 }
 265
 266 static void manage_squid_ntlmssp_request(enum squid_mode squid_mode,
 267                                          char *buf, int length)
 268 {
 269         static NTLMSSP_STATE *ntlmssp_state = NULL;
 270         DATA_BLOB request, reply;
 271         NTSTATUS nt_status;
 272
 273         if (strlen(buf) < 2) {
 274                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 275                 x_fprintf(x_stdout, "BH\n");
 276                 return;
 277         }
 278
 279         if (strlen(buf) > 3) {
 280                 request = base64_decode_data_blob(buf + 3);
 281         } else if (strcmp(buf, "YR") == 0) {
 282                 request = data_blob(NULL, 0);
 283                 if (ntlmssp_state)
 284                         ntlmssp_server_end(&ntlmssp_state);
 285         } else {
 286                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 287                 x_fprintf(x_stdout, "BH\n");
 288                 return;
 289         }
 290
 291         if (!ntlmssp_state) {
 292                 ntlmssp_server_start(&ntlmssp_state);
 293                 ntlmssp_state->check_password = winbind_pw_check;
 294                 ntlmssp_state->get_domain = get_winbind_domain;
 295                 ntlmssp_state->get_global_myname = get_winbind_netbios_name;
 296         }
 297
 298         DEBUG(10, ("got NTLMSSP packet:\n"));
 299         dump_data(10, request.data, request.length);
 300
 301         nt_status = ntlmssp_server_update(ntlmssp_state, request, &reply);
 302
 303         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 304                 char *reply_base64 = base64_encode_data_blob(reply);
 305                 x_fprintf(x_stdout, "TT %s\n", reply_base64);
 306                 SAFE_FREE(reply_base64);
 307                 data_blob_free(&reply);
 308                 DEBUG(10, ("NTLMSSP challenge\n"));
 309         } else if (!NT_STATUS_IS_OK(nt_status)) {
 310                 x_fprintf(x_stdout, "NA %s\n", nt_errstr(nt_status));
 311                 DEBUG(10, ("NTLMSSP %s\n", nt_errstr(nt_status)));
 312         } else {
 313                 x_fprintf(x_stdout, "AF %s\\%s\n", ntlmssp_state->domain, ntlmssp_state->user);
 314                 DEBUG(10, ("NTLMSSP OK!\n"));
 315         }
 316
 317         data_blob_free(&request);
 318 }
 319
 320 static void manage_squid_basic_request(enum squid_mode squid_mode,
 321                                        char *buf, int length)
 322 {
 323         char *user, *pass;
 324         user=buf;
 325
 326         pass=memchr(buf,' ',length);
 327         if (!pass) {
 328                 DEBUG(2, ("Password not found. Denying access\n"));
 329                 x_fprintf(x_stderr, "ERR\n");
 330                 return;
 331         }
 332         *pass='\0';
 333         pass++;
 334
 335         if (squid_mode == SQUID_2_5_BASIC) {
 336                 rfc1738_unescape(user);
 337                 rfc1738_unescape(pass);
 338         }
 339
 340         if (check_plaintext_auth(user, pass, False)) {
 341                 x_fprintf(x_stdout, "OK\n");
 342         } else {
 343                 x_fprintf(x_stdout, "ERR\n");
 344         }
 345 }
 346
 347 static void manage_squid_request(enum squid_mode squid_mode)
 348 {
 349         char buf[SQUID_BUFFER_SIZE+1];
 350         int length;
 351         char *c;
 352         static BOOL err;
 353
 354         /* this is not a typo - x_fgets doesn't work too well under squid */
 355         if (fgets(buf, sizeof(buf)-1, stdin) == NULL) {
 356                 DEBUG(1, ("fgets() failed! dying..... errno=%d (%s)\n", ferror(stdin),
 357                           strerror(ferror(stdin))));
 358                 exit(1);    /* BIIG buffer */
 359         }
 360
 361         c=memchr(buf,'\n',sizeof(buf)-1);
 362         if (c) {
 363                 *c = '\0';
 364                 length = c-buf;
 365         } else {
 366                 err = 1;
 367                 return;
 368         }
 369         if (err) {
 370                 DEBUG(2, ("Oversized message\n"));
 371                 x_fprintf(x_stderr, "ERR\n");
 372                 err = 0;
 373                 return;
 374         }
 375
 376         DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
 377
 378         if (buf[0] == '\0') {
 379                 DEBUG(2, ("Invalid Request\n"));
 380                 x_fprintf(x_stderr, "ERR\n");
 381                 return;
 382         }
 383
 384         if (squid_mode == SQUID_2_5_BASIC || squid_mode == SQUID_2_4_BASIC) {
 385                 manage_squid_basic_request(squid_mode, buf, length);
 386         } else if (squid_mode == SQUID_2_5_NTLMSSP) {
 387                 manage_squid_ntlmssp_request(squid_mode, buf, length);
 388         }
 389 }
 390
 391
 392 static void squid_stream(enum squid_mode squid_mode) {
 393         /* initialize FDescs */
 394         x_setbuf(x_stdout, NULL);
 395         x_setbuf(x_stderr, NULL);
 396         while(1) {
 397                 manage_squid_request(squid_mode);
 398         }
 399 }
 400
 401
 402 /* Authenticate a user with a challenge/response */
 403
 404 static BOOL check_auth_crap(void)
 405 {
 406         NTSTATUS nt_status;
 407         uint32 flags = 0;
 408         char lm_key[8];
 409         char nt_key[16];
 410         char *hex_lm_key;
 411         char *hex_nt_key;
 412         char *error_string;
 413
 414         static uint8 zeros[16];
 415
 416         if (request_lm_key)
 417                 flags |= WINBIND_PAM_LMKEY;
 418
 419         if (request_nt_key)
 420                 flags |= WINBIND_PAM_NTKEY;
 421
 422         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
 423                                               opt_workstation,
 424                                               &opt_challenge,
 425                                               &opt_lm_response,
 426                                               &opt_nt_response,
 427                                               flags,
 428                                               lm_key,
 429                                               nt_key,
 430                                               &error_string);
 431
 432         if (!NT_STATUS_IS_OK(nt_status)) {
 433                 d_printf("%s (0x%x)\n",
 434                          error_string,
 435                          NT_STATUS_V(nt_status));
 436                 SAFE_FREE(error_string);
 437                 return False;
 438         }
 439
 440         if (request_lm_key
 441             && (memcmp(zeros, lm_key,
 442                        sizeof(lm_key)) != 0)) {
 443                 hex_encode(lm_key,
 444                            sizeof(lm_key),
 445                            &hex_lm_key);
 446                 d_printf("LM_KEY: %s\n", hex_lm_key);
 447                 SAFE_FREE(hex_lm_key);
 448         }
 449         if (request_nt_key
 450             && (memcmp(zeros, nt_key,
 451                        sizeof(nt_key)) != 0)) {
 452                 hex_encode(nt_key,
 453                            sizeof(nt_key),
 454                            &hex_nt_key);
 455                 d_printf("NT_KEY: %s\n", hex_nt_key);
 456                 SAFE_FREE(hex_nt_key);
 457         }
 458
 459         return True;
 460 }
 461
 462 /*
 463    Authenticate a user with a challenge/response, checking session key
 464    and valid authentication types
 465 */
 466
 467 static DATA_BLOB get_challenge(void)
 468 {
 469         static DATA_BLOB chal;
 470         if (opt_challenge.length)
 471                 return opt_challenge;
 472
 473         chal = data_blob(NULL, 8);
 474
 475         generate_random_buffer(chal.data, chal.length, False);
 476         return chal;
 477 }
 478
 479 static BOOL test_lm(void)
 480 {
 481         NTSTATUS nt_status;
 482         uint32 flags = 0;
 483         DATA_BLOB lm_response = data_blob(NULL, 24);
 484
 485         uchar lm_key[8];
 486         uchar lm_hash[16];
 487         DATA_BLOB chall = get_challenge();
 488         char *error_string;
 489
 490         flags |= WINBIND_PAM_LMKEY;
 491
 492         SMBencrypt(opt_password,chall.data,lm_response.data);
 493         E_deshash(opt_password, lm_hash);
 494
 495         nt_status = contact_winbind_auth_crap(opt_username, opt_domain, opt_workstation,
 496                                               &chall,
 497                                               &lm_response,
 498                                               NULL,
 499                                               flags,
 500                                               lm_key,
 501                                               NULL,
 502                                               &error_string);
 503
 504         data_blob_free(&lm_response);
 505
 506         if (!NT_STATUS_IS_OK(nt_status)) {
 507                 d_printf("%s (0x%x)\n",
 508                          error_string,
 509                          NT_STATUS_V(nt_status));
 510                 return False;
 511         }
 512
 513         if (memcmp(lm_hash, lm_key,
 514                    sizeof(lm_key)) != 0) {
 515                 DEBUG(1, ("LM Key does not match expectations!\n"));
 516                 DEBUG(1, ("lm_key:\n"));
 517                 dump_data(1, lm_key, 8);
 518                 DEBUG(1, ("expected:\n"));
 519                 dump_data(1, lm_hash, 8);
 520         }
 521         return True;
 522 }
 523
 524 static BOOL test_lm_ntlm(void)
 525 {
 526         BOOL pass = True;
 527         NTSTATUS nt_status;
 528         uint32 flags = 0;
 529         DATA_BLOB lm_response = data_blob(NULL, 24);
 530         DATA_BLOB nt_response = data_blob(NULL, 24);
 531         DATA_BLOB session_key = data_blob(NULL, 16);
 532
 533         uchar lm_key[8];
 534         uchar nt_key[16];
 535         uchar lm_hash[16];
 536         uchar nt_hash[16];
 537         DATA_BLOB chall = get_challenge();
 538         char *error_string;
 539
 540         flags |= WINBIND_PAM_LMKEY;
 541         flags |= WINBIND_PAM_NTKEY;
 542
 543         SMBencrypt(opt_password,chall.data,lm_response.data);
 544         E_deshash(opt_password, lm_hash);
 545
 546         SMBNTencrypt(opt_password,chall.data,nt_response.data);
 547
 548         E_md4hash(opt_password, nt_hash);
 549         SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
 550
 551         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
 552                                               opt_workstation,
 553                                               &chall,
 554                                               &lm_response,
 555                                               &nt_response,
 556                                               flags,
 557                                               lm_key,
 558                                               nt_key,
 559                                               &error_string);
 560
 561         data_blob_free(&lm_response);
 562
 563         if (!NT_STATUS_IS_OK(nt_status)) {
 564                 d_printf("%s (0x%x)\n",
 565                          error_string,
 566                          NT_STATUS_V(nt_status));
 567                 SAFE_FREE(error_string);
 568                 return False;
 569         }
 570
 571         if (memcmp(lm_hash, lm_key,
 572                    sizeof(lm_key)) != 0) {
 573                 DEBUG(1, ("LM Key does not match expectations!\n"));
 574                 DEBUG(1, ("lm_key:\n"));
 575                 dump_data(1, lm_key, 8);
 576                 DEBUG(1, ("expected:\n"));
 577                 dump_data(1, lm_hash, 8);
 578                 pass = False;
 579         }
 580         if (memcmp(session_key.data, nt_key,
 581                    sizeof(nt_key)) != 0) {
 582                 DEBUG(1, ("NT Session Key does not match expectations!\n"));
 583                 DEBUG(1, ("nt_key:\n"));
 584                 dump_data(1, nt_key, 16);
 585                 DEBUG(1, ("expected:\n"));
 586                 dump_data(1, session_key.data, session_key.length);
 587                 pass = False;
 588         }
 589         return pass;
 590 }
 591
 592 static BOOL test_ntlm(void)
 593 {
 594         BOOL pass = True;
 595         NTSTATUS nt_status;
 596         uint32 flags = 0;
 597         DATA_BLOB nt_response = data_blob(NULL, 24);
 598         DATA_BLOB session_key = data_blob(NULL, 16);
 599
 600         char nt_key[16];
 601         char nt_hash[16];
 602         DATA_BLOB chall = get_challenge();
 603         char *error_string;
 604
 605         flags |= WINBIND_PAM_NTKEY;
 606
 607         SMBNTencrypt(opt_password,chall.data,nt_response.data);
 608         E_md4hash(opt_password, nt_hash);
 609         SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
 610
 611         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
 612                                               opt_workstation,
 613                                               &chall,
 614                                               NULL,
 615                                               &nt_response,
 616                                               flags,
 617                                               NULL,
 618                                               nt_key,
 619                                               &error_string);
 620
 621         data_blob_free(&nt_response);
 622
 623         if (!NT_STATUS_IS_OK(nt_status)) {
 624                 d_printf("%s (0x%x)\n",
 625                          error_string,
 626                          NT_STATUS_V(nt_status));
 627                 SAFE_FREE(error_string);
 628                 return False;
 629         }
 630
 631         if (memcmp(session_key.data, nt_key,
 632                    sizeof(nt_key)) != 0) {
 633                 DEBUG(1, ("NT Session Key does not match expectations!\n"));
 634                 DEBUG(1, ("nt_key:\n"));
 635                 dump_data(1, nt_key, 16);
 636                 DEBUG(1, ("expected:\n"));
 637                 dump_data(1, session_key.data, session_key.length);
 638                 pass = False;
 639         }
 640         return pass;
 641 }
 642
 643 /*
 644    Tests:
 645
 646    - LM only
 647    - NT and LM
 648    - NT
 649    - NTLMv2
 650    - NTLMv2 and LMv2
 651    - LMv2
 652
 653    check we get the correct session key in each case
 654    check what values we get for the LM session key
 655
 656 */
 657
 658 struct ntlm_tests {
 659         BOOL (*fn)();
 660         const char *name;
 661 } test_table[] = {
 662         {test_lm, "test LM"},
 663         {test_lm_ntlm, "test LM and NTLM"},
 664         {test_ntlm, "test NTLM"}
 665 /*      {test_lm_ntlmv2, "test NTLMv2"}, */
 666 /*      {test_lm_ntlmv2, "test NTLMv2 and LMv2"}, */
 667 /*      {test_lm_ntlmv2, "test LMv2"} */
 668 };
 669
 670 static BOOL diagnose_ntlm_auth(void)
 671 {
 672         unsigned int i;
 673         BOOL pass = True;
 674
 675         for (i=0; test_table[i].fn; i++) {
 676                 if (!test_table[i].fn()) {
 677                         DEBUG(1, ("Test %s failed!\n", test_table[i].name));
 678                         pass = False;
 679                 }
 680         }
 681
 682         return pass;
 683 }
 684
 685 /* Main program */
 686
 687 enum {
 688         OPT_USERNAME = 1000,
 689         OPT_DOMAIN,
 690         OPT_WORKSTATION,
 691         OPT_CHALLENGE,
 692         OPT_RESPONSE,
 693         OPT_LM,
 694         OPT_NT,
 695         OPT_PASSWORD,
 696         OPT_LM_KEY,
 697         OPT_NT_KEY,
 698         OPT_DIAGNOSTICS
 699 };
 700
 701  int main(int argc, const char **argv)
 702 {
 703         int opt;
 704
 705         static const char *hex_challenge;
 706         static const char *hex_lm_response;
 707         static const char *hex_nt_response;
 708         char *challenge;
 709         char *lm_response;
 710         char *nt_response;
 711         size_t challenge_len;
 712         size_t lm_response_len;
 713         size_t nt_response_len;
 714
 715         poptContext pc;
 716
 717         /* NOTE: DO NOT change this interface without considering the implications!
 718            This is an external interface, which other programs will use to interact
 719            with this helper.
 720         */
 721
 722         /* We do not use single-letter command abbreviations, because they harm future
 723            interface stability. */
 724
 725         struct poptOption long_options[] = {
 726                 POPT_AUTOHELP
 727                 { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
 728                 { "username", 0, POPT_ARG_STRING, &opt_username, OPT_USERNAME, "username"},
 729                 { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
 730                 { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
 731                 { "challenge", 0, POPT_ARG_STRING, &hex_challenge, OPT_CHALLENGE, "challenge (HEX encoded)"},
 732                 { "lm-response", 0, POPT_ARG_STRING, &hex_lm_response, OPT_LM, "LM Response to the challenge (HEX encoded)"},
 733                 { "nt-response", 0, POPT_ARG_STRING, &hex_nt_response, OPT_NT, "NT or NTLMv2 Response to the challenge (HEX encoded)"},
 734                 { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
 735                 { "request-lm-key", 0, POPT_ARG_NONE, &request_lm_key, OPT_LM_KEY, "Retreive LM session key"},
 736                 { "request-nt-key", 0, POPT_ARG_NONE, &request_nt_key, OPT_NT_KEY, "Retreive NT session key"},
 737                 { "diagnostics", 0, POPT_ARG_NONE, &diagnostics, OPT_DIAGNOSTICS, "Perform diagnostics on the authentictaion chain"},
 738                 POPT_COMMON_SAMBA
 739                 POPT_TABLEEND
 740         };
 741
 742         /* Samba client initialisation */
 743
 744         dbf = x_stderr;
 745
 746         /* Parse options */
 747
 748         pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
 749
 750         /* Parse command line options */
 751
 752         if (argc == 1) {
 753                 poptPrintHelp(pc, stderr, 0);
 754                 return 1;
 755         }
 756
 757         pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
 758                             POPT_CONTEXT_KEEP_FIRST);
 759
 760         while((opt = poptGetNextOpt(pc)) != -1) {
 761                 switch (opt) {
 762                 case OPT_CHALLENGE:
 763                         challenge = smb_xmalloc((strlen(hex_challenge)+1)/2);
 764                         if ((challenge_len = strhex_to_str(challenge,
 765                                                            strlen(hex_challenge),
 766                                                            hex_challenge)) != 8) {
 767                                 x_fprintf(x_stderr, "hex decode of %s failed (only got %u bytes)!\n",
 768                                         hex_challenge, challenge_len);
 769                                 exit(1);
 770                         }
 771                         opt_challenge = data_blob(challenge, challenge_len);
 772                         SAFE_FREE(challenge);
 773                         break;
 774                 case OPT_LM:
 775                         lm_response = smb_xmalloc((strlen(hex_lm_response)+1)/2);
 776                         lm_response_len = strhex_to_str(lm_response,
 777                                                         strlen(hex_lm_response),
 778                                                         hex_lm_response);
 779                         if (lm_response_len != 24) {
 780                                 x_fprintf(x_stderr, "hex decode of %s failed!\n", hex_lm_response);
 781                                 exit(1);
 782                         }
 783                         opt_lm_response = data_blob(lm_response, lm_response_len);
 784                         SAFE_FREE(lm_response);
 785                         break;
 786                 case OPT_NT:
 787                         nt_response = smb_xmalloc((strlen(hex_nt_response)+1)/2);
 788                         nt_response_len = strhex_to_str(nt_response,
 789                                                         strlen(hex_nt_response),
 790                                                         hex_nt_response);
 791                         if (nt_response_len < 24) {
 792                                 x_fprintf(x_stderr, "hex decode of %s failed!\n", hex_nt_response);
 793                                 exit(1);
 794                         }
 795                         opt_nt_response = data_blob(nt_response, nt_response_len);
 796                         SAFE_FREE(nt_response);
 797                         break;
 798                 }
 799         }
 800
 801         if (helper_protocol) {
 802                 if (strcmp(helper_protocol, "squid-2.5-ntlmssp")== 0) {
 803                         squid_stream(SQUID_2_5_NTLMSSP);
 804                 } else if (strcmp(helper_protocol, "squid-2.5-basic")== 0) {
 805                         squid_stream(SQUID_2_5_BASIC);
 806                 } else if (strcmp(helper_protocol, "squid-2.4-basic")== 0) {
 807                         squid_stream(SQUID_2_4_BASIC);
 808                 } else {
 809                         x_fprintf(x_stderr, "unknown helper protocol [%s]\n", helper_protocol);
 810                         exit(1);
 811                 }
 812         }
 813
 814         if (!opt_username) {
 815                 x_fprintf(x_stderr, "username must be specified!\n\n");
 816                 poptPrintHelp(pc, stderr, 0);
 817                 exit(1);
 818         }
 819
 820         if (opt_domain == NULL) {
 821                 opt_domain = get_winbind_domain();
 822         }
 823
 824         if (opt_workstation == NULL) {
 825                 opt_workstation = "";
 826         }
 827
 828         if (opt_challenge.length) {
 829                 if (!check_auth_crap()) {
 830                         exit(1);
 831                 }
 832                 exit(0);
 833         }
 834
 835         if (!opt_password) {
 836                 opt_password = getpass("password: ");
 837         }
 838
 839         if (diagnostics) {
 840                 if (!diagnose_ntlm_auth()) {
 841                         exit(1);
 842                 }
 843         } else {
 844                 fstring user;
 845
 846                 snprintf(user, sizeof(user)-1, "%s%c%s", opt_domain, winbind_separator(), opt_username);
 847                 if (!check_plaintext_auth(user, opt_password, True)) {
 848                         exit(1);
 849                 }
 850         }
 851
 852         /* Exit code */
 853
 854         poptFreeContext(pc);
 855         return 0;
 856 }