source3/utils/ntlm_auth.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Winbind status program.
   5
   6    Copyright (C) Tim Potter      2000-2003
   7    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003-2004
   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 #include "utils/ntlm_auth.h"
  27
  28 #undef DBGC_CLASS
  29 #define DBGC_CLASS DBGC_WINBIND
  30
  31 #define SQUID_BUFFER_SIZE 2010
  32
  33 enum stdio_helper_mode {
  34         SQUID_2_4_BASIC,
  35         SQUID_2_5_BASIC,
  36         SQUID_2_5_NTLMSSP,
  37         NTLMSSP_CLIENT_1,
  38         GSS_SPNEGO,
  39         GSS_SPNEGO_CLIENT,
  40         NTLM_SERVER_1,
  41         NUM_HELPER_MODES
  42 };
  43
  44 typedef void (*stdio_helper_function)(enum stdio_helper_mode stdio_helper_mode,
  45                                      char *buf, int length);
  46
  47 static void manage_squid_basic_request (enum stdio_helper_mode stdio_helper_mode,
  48                                         char *buf, int length);
  49
  50 static void manage_squid_ntlmssp_request (enum stdio_helper_mode stdio_helper_mode,
  51                                           char *buf, int length);
  52
  53 static void manage_client_ntlmssp_request (enum stdio_helper_mode stdio_helper_mode,
  54                                            char *buf, int length);
  55
  56 static void manage_gss_spnego_request (enum stdio_helper_mode stdio_helper_mode,
  57                                        char *buf, int length);
  58
  59 static void manage_gss_spnego_client_request (enum stdio_helper_mode stdio_helper_mode,
  60                                               char *buf, int length);
  61
  62 static void manage_ntlm_server_1_request (enum stdio_helper_mode stdio_helper_mode,
  63                                           char *buf, int length);
  64
  65 static const struct {
  66         enum stdio_helper_mode mode;
  67         const char *name;
  68         stdio_helper_function fn;
  69 } stdio_helper_protocols[] = {
  70         { SQUID_2_4_BASIC, "squid-2.4-basic", manage_squid_basic_request},
  71         { SQUID_2_5_BASIC, "squid-2.5-basic", manage_squid_basic_request},
  72         { SQUID_2_5_NTLMSSP, "squid-2.5-ntlmssp", manage_squid_ntlmssp_request},
  73         { NTLMSSP_CLIENT_1, "ntlmssp-client-1", manage_client_ntlmssp_request},
  74         { GSS_SPNEGO, "gss-spnego", manage_gss_spnego_request},
  75         { GSS_SPNEGO_CLIENT, "gss-spnego-client", manage_gss_spnego_client_request},
  76         { NTLM_SERVER_1, "ntlm-server-1", manage_ntlm_server_1_request},
  77         { NUM_HELPER_MODES, NULL, NULL}
  78 };
  79
  80 extern int winbindd_fd;
  81
  82 const char *opt_username;
  83 const char *opt_domain;
  84 const char *opt_workstation;
  85 const char *opt_password;
  86 static DATA_BLOB opt_challenge;
  87 static DATA_BLOB opt_lm_response;
  88 static DATA_BLOB opt_nt_response;
  89 static int request_lm_key;
  90 static int request_user_session_key;
  91
  92 static const char *require_membership_of;
  93 static const char *require_membership_of_sid;
  94
  95 static char winbind_separator(void)
  96 {
  97         struct winbindd_response response;
  98         static BOOL got_sep;
  99         static char sep;
 100
 101         if (got_sep)
 102                 return sep;
 103
 104         ZERO_STRUCT(response);
 105
 106         /* Send off request */
 107
 108         if (winbindd_request_response(WINBINDD_INFO, NULL, &response) !=
 109             NSS_STATUS_SUCCESS) {
 110                 d_printf("could not obtain winbind separator!\n");
 111                 return *lp_winbind_separator();
 112         }
 113
 114         sep = response.data.info.winbind_separator;
 115         got_sep = True;
 116
 117         if (!sep) {
 118                 d_printf("winbind separator was NULL!\n");
 119                 return *lp_winbind_separator();
 120         }
 121
 122         return sep;
 123 }
 124
 125 const char *get_winbind_domain(void)
 126 {
 127         struct winbindd_response response;
 128
 129         static fstring winbind_domain;
 130         if (*winbind_domain) {
 131                 return winbind_domain;
 132         }
 133
 134         ZERO_STRUCT(response);
 135
 136         /* Send off request */
 137
 138         if (winbindd_request_response(WINBINDD_DOMAIN_NAME, NULL, &response) !=
 139             NSS_STATUS_SUCCESS) {
 140                 DEBUG(0, ("could not obtain winbind domain name!\n"));
 141                 return lp_workgroup();
 142         }
 143
 144         fstrcpy(winbind_domain, response.data.domain_name);
 145
 146         return winbind_domain;
 147
 148 }
 149
 150 const char *get_winbind_netbios_name(void)
 151 {
 152         struct winbindd_response response;
 153
 154         static fstring winbind_netbios_name;
 155
 156         if (*winbind_netbios_name) {
 157                 return winbind_netbios_name;
 158         }
 159
 160         ZERO_STRUCT(response);
 161
 162         /* Send off request */
 163
 164         if (winbindd_request_response(WINBINDD_NETBIOS_NAME, NULL, &response) !=
 165             NSS_STATUS_SUCCESS) {
 166                 DEBUG(0, ("could not obtain winbind netbios name!\n"));
 167                 return global_myname();
 168         }
 169
 170         fstrcpy(winbind_netbios_name, response.data.netbios_name);
 171
 172         return winbind_netbios_name;
 173
 174 }
 175
 176 DATA_BLOB get_challenge(void)
 177 {
 178         static DATA_BLOB chal;
 179         if (opt_challenge.length)
 180                 return opt_challenge;
 181
 182         chal = data_blob(NULL, 8);
 183
 184         generate_random_buffer(chal.data, chal.length);
 185         return chal;
 186 }
 187
 188 /* Copy of parse_domain_user from winbindd_util.c.  Parse a string of the
 189    form DOMAIN/user into a domain and a user */
 190
 191 static BOOL parse_ntlm_auth_domain_user(const char *domuser, fstring domain,
 192                                      fstring user)
 193 {
 194
 195         char *p = strchr(domuser,winbind_separator());
 196
 197         if (!p) {
 198                 return False;
 199         }
 200
 201         fstrcpy(user, p+1);
 202         fstrcpy(domain, domuser);
 203         domain[PTR_DIFF(p, domuser)] = 0;
 204         strupper_m(domain);
 205
 206         return True;
 207 }
 208
 209 static BOOL get_require_membership_sid(void) {
 210         struct winbindd_request request;
 211         struct winbindd_response response;
 212
 213         if (!require_membership_of) {
 214                 return True;
 215         }
 216
 217         if (require_membership_of_sid) {
 218                 return True;
 219         }
 220
 221         /* Otherwise, ask winbindd for the name->sid request */
 222
 223         ZERO_STRUCT(request);
 224         ZERO_STRUCT(response);
 225
 226         if (!parse_ntlm_auth_domain_user(require_membership_of,
 227                                          request.data.name.dom_name,
 228                                          request.data.name.name)) {
 229                 DEBUG(0, ("Could not parse %s into seperate domain/name parts!\n",
 230                           require_membership_of));
 231                 return False;
 232         }
 233
 234         if (winbindd_request_response(WINBINDD_LOOKUPNAME, &request, &response) !=
 235             NSS_STATUS_SUCCESS) {
 236                 DEBUG(0, ("Winbindd lookupname failed to resolve %s into a SID!\n",
 237                           require_membership_of));
 238                 return False;
 239         }
 240
 241         require_membership_of_sid = SMB_STRDUP(response.data.sid.sid);
 242
 243         if (require_membership_of_sid)
 244                 return True;
 245
 246         return False;
 247 }
 248 /* Authenticate a user with a plaintext password */
 249
 250 static BOOL check_plaintext_auth(const char *user, const char *pass,
 251                                  BOOL stdout_diagnostics)
 252 {
 253         struct winbindd_request request;
 254         struct winbindd_response response;
 255         NSS_STATUS result;
 256
 257         if (!get_require_membership_sid()) {
 258                 return False;
 259         }
 260
 261         /* Send off request */
 262
 263         ZERO_STRUCT(request);
 264         ZERO_STRUCT(response);
 265
 266         fstrcpy(request.data.auth.user, user);
 267         fstrcpy(request.data.auth.pass, pass);
 268         if (require_membership_of_sid)
 269                 fstrcpy(request.data.auth.require_membership_of_sid, require_membership_of_sid);
 270
 271         result = winbindd_request_response(WINBINDD_PAM_AUTH, &request, &response);
 272
 273         /* Display response */
 274
 275         if (stdout_diagnostics) {
 276                 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
 277                         d_printf("Reading winbind reply failed! (0x01)\n");
 278                 }
 279
 280                 d_printf("%s: %s (0x%x)\n",
 281                          response.data.auth.nt_status_string,
 282                          response.data.auth.error_string,
 283                          response.data.auth.nt_status);
 284         } else {
 285                 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
 286                         DEBUG(1, ("Reading winbind reply failed! (0x01)\n"));
 287                 }
 288
 289                 DEBUG(3, ("%s: %s (0x%x)\n",
 290                           response.data.auth.nt_status_string,
 291                           response.data.auth.error_string,
 292                           response.data.auth.nt_status));
 293         }
 294
 295         return (result == NSS_STATUS_SUCCESS);
 296 }
 297
 298 /* authenticate a user with an encrypted username/password */
 299
 300 NTSTATUS contact_winbind_auth_crap(const char *username,
 301                                    const char *domain,
 302                                    const char *workstation,
 303                                    const DATA_BLOB *challenge,
 304                                    const DATA_BLOB *lm_response,
 305                                    const DATA_BLOB *nt_response,
 306                                    uint32 flags,
 307                                    uint8 lm_key[8],
 308                                    uint8 user_session_key[16],
 309                                    char **error_string,
 310                                    char **unix_name)
 311 {
 312         NTSTATUS nt_status;
 313         NSS_STATUS result;
 314         struct winbindd_request request;
 315         struct winbindd_response response;
 316
 317         if (!get_require_membership_sid()) {
 318                 return NT_STATUS_INVALID_PARAMETER;
 319         }
 320
 321         ZERO_STRUCT(request);
 322         ZERO_STRUCT(response);
 323
 324         request.flags = flags;
 325
 326         if (require_membership_of_sid)
 327                 fstrcpy(request.data.auth_crap.require_membership_of_sid, require_membership_of_sid);
 328
 329         fstrcpy(request.data.auth_crap.user, username);
 330         fstrcpy(request.data.auth_crap.domain, domain);
 331
 332         fstrcpy(request.data.auth_crap.workstation,
 333                 workstation);
 334
 335         memcpy(request.data.auth_crap.chal, challenge->data, MIN(challenge->length, 8));
 336
 337         if (lm_response && lm_response->length) {
 338                 memcpy(request.data.auth_crap.lm_resp,
 339                        lm_response->data,
 340                        MIN(lm_response->length, sizeof(request.data.auth_crap.lm_resp)));
 341                 request.data.auth_crap.lm_resp_len = lm_response->length;
 342         }
 343
 344         if (nt_response && nt_response->length) {
 345                 memcpy(request.data.auth_crap.nt_resp,
 346                        nt_response->data,
 347                        MIN(nt_response->length, sizeof(request.data.auth_crap.nt_resp)));
 348                 request.data.auth_crap.nt_resp_len = nt_response->length;
 349         }
 350
 351         result = winbindd_request_response(WINBINDD_PAM_AUTH_CRAP, &request, &response);
 352
 353         /* Display response */
 354
 355         if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
 356                 nt_status = NT_STATUS_UNSUCCESSFUL;
 357                 if (error_string)
 358                         *error_string = smb_xstrdup("Reading winbind reply failed!");
 359                 free_response(&response);
 360                 return nt_status;
 361         }
 362
 363         nt_status = (NT_STATUS(response.data.auth.nt_status));
 364         if (!NT_STATUS_IS_OK(nt_status)) {
 365                 if (error_string)
 366                         *error_string = smb_xstrdup(response.data.auth.error_string);
 367                 free_response(&response);
 368                 return nt_status;
 369         }
 370
 371         if ((flags & WBFLAG_PAM_LMKEY) && lm_key) {
 372                 memcpy(lm_key, response.data.auth.first_8_lm_hash,
 373                        sizeof(response.data.auth.first_8_lm_hash));
 374         }
 375         if ((flags & WBFLAG_PAM_USER_SESSION_KEY) && user_session_key) {
 376                 memcpy(user_session_key, response.data.auth.user_session_key,
 377                         sizeof(response.data.auth.user_session_key));
 378         }
 379
 380         if (flags & WBFLAG_PAM_UNIX_NAME) {
 381                 *unix_name = SMB_STRDUP((char *)response.extra_data);
 382                 if (!*unix_name) {
 383                         free_response(&response);
 384                         return NT_STATUS_NO_MEMORY;
 385                 }
 386         }
 387
 388         free_response(&response);
 389         return nt_status;
 390 }
 391
 392 static NTSTATUS winbind_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
 393 {
 394         static const char zeros[16];
 395         NTSTATUS nt_status;
 396         char *error_string;
 397         uint8 lm_key[8];
 398         uint8 user_sess_key[16];
 399         char *unix_name;
 400
 401         nt_status = contact_winbind_auth_crap(ntlmssp_state->user, ntlmssp_state->domain,
 402                                               ntlmssp_state->workstation,
 403                                               &ntlmssp_state->chal,
 404                                               &ntlmssp_state->lm_resp,
 405                                               &ntlmssp_state->nt_resp,
 406                                               WBFLAG_PAM_LMKEY | WBFLAG_PAM_USER_SESSION_KEY | WBFLAG_PAM_UNIX_NAME,
 407                                               lm_key, user_sess_key,
 408                                               &error_string, &unix_name);
 409
 410         if (NT_STATUS_IS_OK(nt_status)) {
 411                 if (memcmp(lm_key, zeros, 8) != 0) {
 412                         *lm_session_key = data_blob(NULL, 16);
 413                         memcpy(lm_session_key->data, lm_key, 8);
 414                         memset(lm_session_key->data+8, '\0', 8);
 415                 }
 416
 417                 if (memcmp(user_sess_key, zeros, 16) != 0) {
 418                         *user_session_key = data_blob(user_sess_key, 16);
 419                 }
 420                 ntlmssp_state->auth_context = talloc_strdup(ntlmssp_state->mem_ctx, unix_name);
 421                 SAFE_FREE(unix_name);
 422         } else {
 423                 DEBUG(NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED) ? 0 : 3,
 424                       ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
 425                        ntlmssp_state->domain, ntlmssp_state->user,
 426                        ntlmssp_state->workstation,
 427                        error_string ? error_string : "unknown error (NULL)"));
 428                 ntlmssp_state->auth_context = NULL;
 429         }
 430         return nt_status;
 431 }
 432
 433 static NTSTATUS local_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
 434 {
 435         NTSTATUS nt_status;
 436         uint8 lm_pw[16], nt_pw[16];
 437
 438         nt_lm_owf_gen (opt_password, nt_pw, lm_pw);
 439
 440         nt_status = ntlm_password_check(ntlmssp_state->mem_ctx,
 441                                         &ntlmssp_state->chal,
 442                                         &ntlmssp_state->lm_resp,
 443                                         &ntlmssp_state->nt_resp,
 444                                         NULL, NULL,
 445                                         ntlmssp_state->user,
 446                                         ntlmssp_state->user,
 447                                         ntlmssp_state->domain,
 448                                         lm_pw, nt_pw, user_session_key, lm_session_key);
 449
 450         if (NT_STATUS_IS_OK(nt_status)) {
 451                 ntlmssp_state->auth_context = talloc_asprintf(ntlmssp_state->mem_ctx,
 452                                                               "%s%c%s", ntlmssp_state->domain,
 453                                                               *lp_winbind_separator(),
 454                                                               ntlmssp_state->user);
 455         } else {
 456                 DEBUG(3, ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
 457                           ntlmssp_state->domain, ntlmssp_state->user, ntlmssp_state->workstation,
 458                           nt_errstr(nt_status)));
 459                 ntlmssp_state->auth_context = NULL;
 460         }
 461         return nt_status;
 462 }
 463
 464 static NTSTATUS ntlm_auth_start_ntlmssp_client(NTLMSSP_STATE **client_ntlmssp_state)
 465 {
 466         NTSTATUS status;
 467         if ( (opt_username == NULL) || (opt_domain == NULL) ) {
 468                 status = NT_STATUS_UNSUCCESSFUL;
 469                 DEBUG(1, ("Need username and domain for NTLMSSP\n"));
 470                 return NT_STATUS_INVALID_PARAMETER;
 471         }
 472
 473         status = ntlmssp_client_start(client_ntlmssp_state);
 474
 475         if (!NT_STATUS_IS_OK(status)) {
 476                 DEBUG(1, ("Could not start NTLMSSP client: %s\n",
 477                           nt_errstr(status)));
 478                 ntlmssp_end(client_ntlmssp_state);
 479                 return status;
 480         }
 481
 482         status = ntlmssp_set_username(*client_ntlmssp_state, opt_username);
 483
 484         if (!NT_STATUS_IS_OK(status)) {
 485                 DEBUG(1, ("Could not set username: %s\n",
 486                           nt_errstr(status)));
 487                 ntlmssp_end(client_ntlmssp_state);
 488                 return status;
 489         }
 490
 491         status = ntlmssp_set_domain(*client_ntlmssp_state, opt_domain);
 492
 493         if (!NT_STATUS_IS_OK(status)) {
 494                 DEBUG(1, ("Could not set domain: %s\n",
 495                           nt_errstr(status)));
 496                 ntlmssp_end(client_ntlmssp_state);
 497                 return status;
 498         }
 499
 500         status = ntlmssp_set_password(*client_ntlmssp_state, opt_password);
 501
 502         if (!NT_STATUS_IS_OK(status)) {
 503                 DEBUG(1, ("Could not set password: %s\n",
 504                           nt_errstr(status)));
 505                 ntlmssp_end(client_ntlmssp_state);
 506                 return status;
 507         }
 508         return NT_STATUS_OK;
 509 }
 510
 511 static NTSTATUS ntlm_auth_start_ntlmssp_server(NTLMSSP_STATE **ntlmssp_state)
 512 {
 513         NTSTATUS status = ntlmssp_server_start(ntlmssp_state);
 514
 515         if (!NT_STATUS_IS_OK(status)) {
 516                 DEBUG(1, ("Could not start NTLMSSP client: %s\n",
 517                           nt_errstr(status)));
 518                 return status;
 519         }
 520
 521         /* Have we been given a local password, or should we ask winbind? */
 522         if (opt_password) {
 523                 (*ntlmssp_state)->check_password = local_pw_check;
 524                 (*ntlmssp_state)->get_domain = lp_workgroup;
 525                 (*ntlmssp_state)->get_global_myname = global_myname;
 526         } else {
 527                 (*ntlmssp_state)->check_password = winbind_pw_check;
 528                 (*ntlmssp_state)->get_domain = get_winbind_domain;
 529                 (*ntlmssp_state)->get_global_myname = get_winbind_netbios_name;
 530         }
 531         return NT_STATUS_OK;
 532 }
 533
 534 static void manage_squid_ntlmssp_request(enum stdio_helper_mode stdio_helper_mode,
 535                                          char *buf, int length)
 536 {
 537         static NTLMSSP_STATE *ntlmssp_state = NULL;
 538         DATA_BLOB request, reply;
 539         NTSTATUS nt_status;
 540
 541         if (strlen(buf) < 2) {
 542                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 543                 x_fprintf(x_stdout, "BH\n");
 544                 return;
 545         }
 546
 547         if (strlen(buf) > 3) {
 548                 request = base64_decode_data_blob(buf + 3);
 549         } else {
 550                 request = data_blob(NULL, 0);
 551         }
 552
 553         if ((strncmp(buf, "PW ", 3) == 0)) {
 554                 /* The calling application wants us to use a local password (rather than winbindd) */
 555
 556                 opt_password = SMB_STRNDUP((const char *)request.data, request.length);
 557
 558                 if (opt_password == NULL) {
 559                         DEBUG(1, ("Out of memory\n"));
 560                         x_fprintf(x_stdout, "BH\n");
 561                         data_blob_free(&request);
 562                         return;
 563                 }
 564
 565                 x_fprintf(x_stdout, "OK\n");
 566                 data_blob_free(&request);
 567                 return;
 568         }
 569
 570         if (strncmp(buf, "YR", 2) == 0) {
 571                 if (ntlmssp_state)
 572                         ntlmssp_end(&ntlmssp_state);
 573         } else if (strncmp(buf, "KK", 2) == 0) {
 574
 575         } else {
 576                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 577                 x_fprintf(x_stdout, "BH\n");
 578                 return;
 579         }
 580
 581         if (!ntlmssp_state) {
 582                 if (!NT_STATUS_IS_OK(nt_status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
 583                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
 584                         return;
 585                 }
 586         }
 587
 588         DEBUG(10, ("got NTLMSSP packet:\n"));
 589         dump_data(10, (const char *)request.data, request.length);
 590
 591         nt_status = ntlmssp_update(ntlmssp_state, request, &reply);
 592
 593         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 594                 char *reply_base64 = base64_encode_data_blob(reply);
 595                 x_fprintf(x_stdout, "TT %s\n", reply_base64);
 596                 SAFE_FREE(reply_base64);
 597                 data_blob_free(&reply);
 598                 DEBUG(10, ("NTLMSSP challenge\n"));
 599         } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
 600                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
 601                 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
 602
 603                 ntlmssp_end(&ntlmssp_state);
 604         } else if (!NT_STATUS_IS_OK(nt_status)) {
 605                 x_fprintf(x_stdout, "NA %s\n", nt_errstr(nt_status));
 606                 DEBUG(10, ("NTLMSSP %s\n", nt_errstr(nt_status)));
 607         } else {
 608                 x_fprintf(x_stdout, "AF %s\n", (char *)ntlmssp_state->auth_context);
 609                 DEBUG(10, ("NTLMSSP OK!\n"));
 610         }
 611
 612         data_blob_free(&request);
 613 }
 614
 615 static void manage_client_ntlmssp_request(enum stdio_helper_mode stdio_helper_mode,
 616                                          char *buf, int length)
 617 {
 618         static NTLMSSP_STATE *ntlmssp_state = NULL;
 619         DATA_BLOB request, reply;
 620         NTSTATUS nt_status;
 621         BOOL first = False;
 622
 623         if (strlen(buf) < 2) {
 624                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 625                 x_fprintf(x_stdout, "BH\n");
 626                 return;
 627         }
 628
 629         if (strlen(buf) > 3) {
 630                 request = base64_decode_data_blob(buf + 3);
 631         } else {
 632                 request = data_blob(NULL, 0);
 633         }
 634
 635         if (strncmp(buf, "PW ", 3) == 0) {
 636                 /* We asked for a password and obviously got it :-) */
 637
 638                 opt_password = SMB_STRNDUP((const char *)request.data, request.length);
 639
 640                 if (opt_password == NULL) {
 641                         DEBUG(1, ("Out of memory\n"));
 642                         x_fprintf(x_stdout, "BH\n");
 643                         data_blob_free(&request);
 644                         return;
 645                 }
 646
 647                 x_fprintf(x_stdout, "OK\n");
 648                 data_blob_free(&request);
 649                 return;
 650         }
 651
 652         if (opt_password == NULL) {
 653
 654                 /* Request a password from the calling process.  After
 655                    sending it, the calling process should retry asking for the negotiate. */
 656
 657                 DEBUG(10, ("Requesting password\n"));
 658                 x_fprintf(x_stdout, "PW\n");
 659                 return;
 660         }
 661
 662         if (strncmp(buf, "YR", 2) == 0) {
 663                 if (ntlmssp_state)
 664                         ntlmssp_end(&ntlmssp_state);
 665         } else if (strncmp(buf, "TT", 2) == 0) {
 666
 667         } else {
 668                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 669                 x_fprintf(x_stdout, "BH\n");
 670                 return;
 671         }
 672
 673         if (!ntlmssp_state) {
 674                 if (!NT_STATUS_IS_OK(nt_status = ntlm_auth_start_ntlmssp_client(&ntlmssp_state))) {
 675                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
 676                         return;
 677                 }
 678                 first = True;
 679         }
 680
 681         DEBUG(10, ("got NTLMSSP packet:\n"));
 682         dump_data(10, (const char *)request.data, request.length);
 683
 684         nt_status = ntlmssp_update(ntlmssp_state, request, &reply);
 685
 686         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 687                 char *reply_base64 = base64_encode_data_blob(reply);
 688                 if (first) {
 689                         x_fprintf(x_stdout, "YR %s\n", reply_base64);
 690                 } else {
 691                         x_fprintf(x_stdout, "KK %s\n", reply_base64);
 692                 }
 693                 SAFE_FREE(reply_base64);
 694                 data_blob_free(&reply);
 695                 DEBUG(10, ("NTLMSSP challenge\n"));
 696         } else if (NT_STATUS_IS_OK(nt_status)) {
 697                 char *reply_base64 = base64_encode_data_blob(reply);
 698                 x_fprintf(x_stdout, "AF %s\n", reply_base64);
 699                 DEBUG(10, ("NTLMSSP OK!\n"));
 700                 if (ntlmssp_state)
 701                         ntlmssp_end(&ntlmssp_state);
 702         } else {
 703                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
 704                 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
 705                 if (ntlmssp_state)
 706                         ntlmssp_end(&ntlmssp_state);
 707         }
 708
 709         data_blob_free(&request);
 710 }
 711
 712 static void manage_squid_basic_request(enum stdio_helper_mode stdio_helper_mode,
 713                                        char *buf, int length)
 714 {
 715         char *user, *pass;
 716         user=buf;
 717
 718         pass=memchr(buf,' ',length);
 719         if (!pass) {
 720                 DEBUG(2, ("Password not found. Denying access\n"));
 721                 x_fprintf(x_stdout, "ERR\n");
 722                 return;
 723         }
 724         *pass='\0';
 725         pass++;
 726
 727         if (stdio_helper_mode == SQUID_2_5_BASIC) {
 728                 rfc1738_unescape(user);
 729                 rfc1738_unescape(pass);
 730         }
 731
 732         if (check_plaintext_auth(user, pass, False)) {
 733                 x_fprintf(x_stdout, "OK\n");
 734         } else {
 735                 x_fprintf(x_stdout, "ERR\n");
 736         }
 737 }
 738
 739 static void offer_gss_spnego_mechs(void) {
 740
 741         DATA_BLOB token;
 742         SPNEGO_DATA spnego;
 743         ssize_t len;
 744         char *reply_base64;
 745
 746         pstring principal;
 747         pstring myname_lower;
 748
 749         ZERO_STRUCT(spnego);
 750
 751         pstrcpy(myname_lower, global_myname());
 752         strlower_m(myname_lower);
 753
 754         pstr_sprintf(principal, "%s$@%s", myname_lower, lp_realm());
 755
 756         /* Server negTokenInit (mech offerings) */
 757         spnego.type = SPNEGO_NEG_TOKEN_INIT;
 758         spnego.negTokenInit.mechTypes = SMB_XMALLOC_ARRAY(const char *, 2);
 759 #ifdef HAVE_KRB5
 760         spnego.negTokenInit.mechTypes[0] = smb_xstrdup(OID_KERBEROS5_OLD);
 761         spnego.negTokenInit.mechTypes[1] = smb_xstrdup(OID_NTLMSSP);
 762         spnego.negTokenInit.mechTypes[2] = NULL;
 763 #else
 764         spnego.negTokenInit.mechTypes[0] = smb_xstrdup(OID_NTLMSSP);
 765         spnego.negTokenInit.mechTypes[1] = NULL;
 766 #endif
 767
 768
 769         spnego.negTokenInit.mechListMIC = data_blob(principal,
 770                                                     strlen(principal));
 771
 772         len = write_spnego_data(&token, &spnego);
 773         free_spnego_data(&spnego);
 774
 775         if (len == -1) {
 776                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
 777                 x_fprintf(x_stdout, "BH\n");
 778                 return;
 779         }
 780
 781         reply_base64 = base64_encode_data_blob(token);
 782         x_fprintf(x_stdout, "TT %s *\n", reply_base64);
 783
 784         SAFE_FREE(reply_base64);
 785         data_blob_free(&token);
 786         DEBUG(10, ("sent SPNEGO negTokenInit\n"));
 787         return;
 788 }
 789
 790 static void manage_gss_spnego_request(enum stdio_helper_mode stdio_helper_mode,
 791                                       char *buf, int length)
 792 {
 793         static NTLMSSP_STATE *ntlmssp_state = NULL;
 794         SPNEGO_DATA request, response;
 795         DATA_BLOB token;
 796         NTSTATUS status;
 797         ssize_t len;
 798
 799         char *user = NULL;
 800         char *domain = NULL;
 801
 802         const char *reply_code;
 803         char       *reply_base64;
 804         pstring     reply_argument;
 805
 806         if (strlen(buf) < 2) {
 807                 DEBUG(1, ("SPENGO query [%s] invalid", buf));
 808                 x_fprintf(x_stdout, "BH\n");
 809                 return;
 810         }
 811
 812         if (strncmp(buf, "YR", 2) == 0) {
 813                 if (ntlmssp_state)
 814                         ntlmssp_end(&ntlmssp_state);
 815         } else if (strncmp(buf, "KK", 2) == 0) {
 816
 817         } else {
 818                 DEBUG(1, ("SPENGO query [%s] invalid", buf));
 819                 x_fprintf(x_stdout, "BH\n");
 820                 return;
 821         }
 822
 823         if ( (strlen(buf) == 2)) {
 824
 825                 /* no client data, get the negTokenInit offering
 826                    mechanisms */
 827
 828                 offer_gss_spnego_mechs();
 829                 return;
 830         }
 831
 832         /* All subsequent requests have a blob. This might be negTokenInit or negTokenTarg */
 833
 834         if (strlen(buf) <= 3) {
 835                 DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
 836                 x_fprintf(x_stdout, "BH\n");
 837                 return;
 838         }
 839
 840         token = base64_decode_data_blob(buf + 3);
 841         len = read_spnego_data(token, &request);
 842         data_blob_free(&token);
 843
 844         if (len == -1) {
 845                 DEBUG(1, ("GSS-SPNEGO query [%s] invalid", buf));
 846                 x_fprintf(x_stdout, "BH\n");
 847                 return;
 848         }
 849
 850         if (request.type == SPNEGO_NEG_TOKEN_INIT) {
 851
 852                 /* Second request from Client. This is where the
 853                    client offers its mechanism to use. */
 854
 855                 if ( (request.negTokenInit.mechTypes == NULL) ||
 856                      (request.negTokenInit.mechTypes[0] == NULL) ) {
 857                         DEBUG(1, ("Client did not offer any mechanism"));
 858                         x_fprintf(x_stdout, "BH\n");
 859                         return;
 860                 }
 861
 862                 status = NT_STATUS_UNSUCCESSFUL;
 863                 if (strcmp(request.negTokenInit.mechTypes[0], OID_NTLMSSP) == 0) {
 864
 865                         if ( request.negTokenInit.mechToken.data == NULL ) {
 866                                 DEBUG(1, ("Client did not provide  NTLMSSP data\n"));
 867                                 x_fprintf(x_stdout, "BH\n");
 868                                 return;
 869                         }
 870
 871                         if ( ntlmssp_state != NULL ) {
 872                                 DEBUG(1, ("Client wants a new NTLMSSP challenge, but "
 873                                           "already got one\n"));
 874                                 x_fprintf(x_stdout, "BH\n");
 875                                 ntlmssp_end(&ntlmssp_state);
 876                                 return;
 877                         }
 878
 879                         if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
 880                                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
 881                                 return;
 882                         }
 883
 884                         DEBUG(10, ("got NTLMSSP packet:\n"));
 885                         dump_data(10, (const char *)request.negTokenInit.mechToken.data,
 886                                   request.negTokenInit.mechToken.length);
 887
 888                         response.type = SPNEGO_NEG_TOKEN_TARG;
 889                         response.negTokenTarg.supportedMech = SMB_STRDUP(OID_NTLMSSP);
 890                         response.negTokenTarg.mechListMIC = data_blob(NULL, 0);
 891
 892                         status = ntlmssp_update(ntlmssp_state,
 893                                                        request.negTokenInit.mechToken,
 894                                                        &response.negTokenTarg.responseToken);
 895                 }
 896
 897 #ifdef HAVE_KRB5
 898                 if (strcmp(request.negTokenInit.mechTypes[0], OID_KERBEROS5_OLD) == 0) {
 899
 900                         TALLOC_CTX *mem_ctx = talloc_init("manage_gss_spnego_request");
 901                         char *principal;
 902                         DATA_BLOB ap_rep;
 903                         DATA_BLOB session_key;
 904
 905                         if ( request.negTokenInit.mechToken.data == NULL ) {
 906                                 DEBUG(1, ("Client did not provide Kerberos data\n"));
 907                                 x_fprintf(x_stdout, "BH\n");
 908                                 return;
 909                         }
 910
 911                         response.type = SPNEGO_NEG_TOKEN_TARG;
 912                         response.negTokenTarg.supportedMech = SMB_STRDUP(OID_KERBEROS5_OLD);
 913                         response.negTokenTarg.mechListMIC = data_blob(NULL, 0);
 914                         response.negTokenTarg.responseToken = data_blob(NULL, 0);
 915
 916                         status = ads_verify_ticket(mem_ctx, lp_realm(),
 917                                                    &request.negTokenInit.mechToken,
 918                                                    &principal, NULL, &ap_rep,
 919                                                    &session_key);
 920
 921                         talloc_destroy(mem_ctx);
 922
 923                         /* Now in "principal" we have the name we are
 924                            authenticated as. */
 925
 926                         if (NT_STATUS_IS_OK(status)) {
 927
 928                                 domain = strchr_m(principal, '@');
 929
 930                                 if (domain == NULL) {
 931                                         DEBUG(1, ("Did not get a valid principal "
 932                                                   "from ads_verify_ticket\n"));
 933                                         x_fprintf(x_stdout, "BH\n");
 934                                         return;
 935                                 }
 936
 937                                 *domain++ = '\0';
 938                                 domain = SMB_STRDUP(domain);
 939                                 user = SMB_STRDUP(principal);
 940
 941                                 data_blob_free(&ap_rep);
 942
 943                                 SAFE_FREE(principal);
 944                         }
 945                 }
 946 #endif
 947
 948         } else {
 949
 950                 if ( (request.negTokenTarg.supportedMech == NULL) ||
 951                      ( strcmp(request.negTokenTarg.supportedMech, OID_NTLMSSP) != 0 ) ) {
 952                         /* Kerberos should never send a negTokenTarg, OID_NTLMSSP
 953                            is the only one we support that sends this stuff */
 954                         DEBUG(1, ("Got a negTokenTarg for something non-NTLMSSP: %s\n",
 955                                   request.negTokenTarg.supportedMech));
 956                         x_fprintf(x_stdout, "BH\n");
 957                         return;
 958                 }
 959
 960                 if (request.negTokenTarg.responseToken.data == NULL) {
 961                         DEBUG(1, ("Got a negTokenTarg without a responseToken!\n"));
 962                         x_fprintf(x_stdout, "BH\n");
 963                         return;
 964                 }
 965
 966                 status = ntlmssp_update(ntlmssp_state,
 967                                                request.negTokenTarg.responseToken,
 968                                                &response.negTokenTarg.responseToken);
 969
 970                 response.type = SPNEGO_NEG_TOKEN_TARG;
 971                 response.negTokenTarg.supportedMech = SMB_STRDUP(OID_NTLMSSP);
 972                 response.negTokenTarg.mechListMIC = data_blob(NULL, 0);
 973
 974                 if (NT_STATUS_IS_OK(status)) {
 975                         user = SMB_STRDUP(ntlmssp_state->user);
 976                         domain = SMB_STRDUP(ntlmssp_state->domain);
 977                         ntlmssp_end(&ntlmssp_state);
 978                 }
 979         }
 980
 981         free_spnego_data(&request);
 982
 983         if (NT_STATUS_IS_OK(status)) {
 984                 response.negTokenTarg.negResult = SPNEGO_ACCEPT_COMPLETED;
 985                 reply_code = "AF";
 986                 pstr_sprintf(reply_argument, "%s\\%s", domain, user);
 987         } else if (NT_STATUS_EQUAL(status,
 988                                    NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 989                 response.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
 990                 reply_code = "TT";
 991                 pstr_sprintf(reply_argument, "*");
 992         } else {
 993                 response.negTokenTarg.negResult = SPNEGO_REJECT;
 994                 reply_code = "NA";
 995                 pstrcpy(reply_argument, nt_errstr(status));
 996         }
 997
 998         SAFE_FREE(user);
 999         SAFE_FREE(domain);
1000
1001         len = write_spnego_data(&token, &response);
1002         free_spnego_data(&response);
1003
1004         if (len == -1) {
1005                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1006                 x_fprintf(x_stdout, "BH\n");
1007                 return;
1008         }
1009
1010         reply_base64 = base64_encode_data_blob(token);
1011
1012         x_fprintf(x_stdout, "%s %s %s\n",
1013                   reply_code, reply_base64, reply_argument);
1014
1015         SAFE_FREE(reply_base64);
1016         data_blob_free(&token);
1017
1018         return;
1019 }
1020
1021 static NTLMSSP_STATE *client_ntlmssp_state = NULL;
1022
1023 static BOOL manage_client_ntlmssp_init(SPNEGO_DATA spnego)
1024 {
1025         NTSTATUS status;
1026         DATA_BLOB null_blob = data_blob(NULL, 0);
1027         DATA_BLOB to_server;
1028         char *to_server_base64;
1029         const char *my_mechs[] = {OID_NTLMSSP, NULL};
1030
1031         DEBUG(10, ("Got spnego negTokenInit with NTLMSSP\n"));
1032
1033         if (client_ntlmssp_state != NULL) {
1034                 DEBUG(1, ("Request for initial SPNEGO request where "
1035                           "we already have a state\n"));
1036                 return False;
1037         }
1038
1039         if (!client_ntlmssp_state) {
1040                 if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_client(&client_ntlmssp_state))) {
1041                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1042                         return False;
1043                 }
1044         }
1045
1046
1047         if (opt_password == NULL) {
1048
1049                 /* Request a password from the calling process.  After
1050                    sending it, the calling process should retry with
1051                    the negTokenInit. */
1052
1053                 DEBUG(10, ("Requesting password\n"));
1054                 x_fprintf(x_stdout, "PW\n");
1055                 return True;
1056         }
1057
1058         spnego.type = SPNEGO_NEG_TOKEN_INIT;
1059         spnego.negTokenInit.mechTypes = my_mechs;
1060         spnego.negTokenInit.reqFlags = 0;
1061         spnego.negTokenInit.mechListMIC = null_blob;
1062
1063         status = ntlmssp_update(client_ntlmssp_state, null_blob,
1064                                        &spnego.negTokenInit.mechToken);
1065
1066         if ( !(NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) ||
1067                         NT_STATUS_IS_OK(status)) ) {
1068                 DEBUG(1, ("Expected OK or MORE_PROCESSING_REQUIRED, got: %s\n",
1069                           nt_errstr(status)));
1070                 ntlmssp_end(&client_ntlmssp_state);
1071                 return False;
1072         }
1073
1074         write_spnego_data(&to_server, &spnego);
1075         data_blob_free(&spnego.negTokenInit.mechToken);
1076
1077         to_server_base64 = base64_encode_data_blob(to_server);
1078         data_blob_free(&to_server);
1079         x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1080         SAFE_FREE(to_server_base64);
1081         return True;
1082 }
1083
1084 static void manage_client_ntlmssp_targ(SPNEGO_DATA spnego)
1085 {
1086         NTSTATUS status;
1087         DATA_BLOB null_blob = data_blob(NULL, 0);
1088         DATA_BLOB request;
1089         DATA_BLOB to_server;
1090         char *to_server_base64;
1091
1092         DEBUG(10, ("Got spnego negTokenTarg with NTLMSSP\n"));
1093
1094         if (client_ntlmssp_state == NULL) {
1095                 DEBUG(1, ("Got NTLMSSP tArg without a client state\n"));
1096                 x_fprintf(x_stdout, "BH\n");
1097                 ntlmssp_end(&client_ntlmssp_state);
1098                 return;
1099         }
1100
1101         if (spnego.negTokenTarg.negResult == SPNEGO_REJECT) {
1102                 x_fprintf(x_stdout, "NA\n");
1103                 ntlmssp_end(&client_ntlmssp_state);
1104                 return;
1105         }
1106
1107         if (spnego.negTokenTarg.negResult == SPNEGO_ACCEPT_COMPLETED) {
1108                 x_fprintf(x_stdout, "AF\n");
1109                 ntlmssp_end(&client_ntlmssp_state);
1110                 return;
1111         }
1112
1113         status = ntlmssp_update(client_ntlmssp_state,
1114                                        spnego.negTokenTarg.responseToken,
1115                                        &request);
1116
1117         if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1118                 DEBUG(1, ("Expected MORE_PROCESSING_REQUIRED from "
1119                           "ntlmssp_client_update, got: %s\n",
1120                           nt_errstr(status)));
1121                 x_fprintf(x_stdout, "BH\n");
1122                 data_blob_free(&request);
1123                 ntlmssp_end(&client_ntlmssp_state);
1124                 return;
1125         }
1126
1127         spnego.type = SPNEGO_NEG_TOKEN_TARG;
1128         spnego.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1129         spnego.negTokenTarg.supportedMech = (char *)OID_NTLMSSP;
1130         spnego.negTokenTarg.responseToken = request;
1131         spnego.negTokenTarg.mechListMIC = null_blob;
1132
1133         write_spnego_data(&to_server, &spnego);
1134         data_blob_free(&request);
1135
1136         to_server_base64 = base64_encode_data_blob(to_server);
1137         data_blob_free(&to_server);
1138         x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1139         SAFE_FREE(to_server_base64);
1140         return;
1141 }
1142
1143 #ifdef HAVE_KRB5
1144
1145 static BOOL manage_client_krb5_init(SPNEGO_DATA spnego)
1146 {
1147         char *principal;
1148         DATA_BLOB tkt, to_server;
1149         DATA_BLOB session_key_krb5 = data_blob(NULL, 0);
1150         SPNEGO_DATA reply;
1151         char *reply_base64;
1152         int retval;
1153
1154         const char *my_mechs[] = {OID_KERBEROS5_OLD, NULL};
1155         ssize_t len;
1156
1157         if ( (spnego.negTokenInit.mechListMIC.data == NULL) ||
1158              (spnego.negTokenInit.mechListMIC.length == 0) ) {
1159                 DEBUG(1, ("Did not get a principal for krb5\n"));
1160                 return False;
1161         }
1162
1163         principal = SMB_MALLOC(spnego.negTokenInit.mechListMIC.length+1);
1164
1165         if (principal == NULL) {
1166                 DEBUG(1, ("Could not malloc principal\n"));
1167                 return False;
1168         }
1169
1170         memcpy(principal, spnego.negTokenInit.mechListMIC.data,
1171                spnego.negTokenInit.mechListMIC.length);
1172         principal[spnego.negTokenInit.mechListMIC.length] = '\0';
1173
1174         retval = cli_krb5_get_ticket(principal, 0, &tkt, &session_key_krb5, 0);
1175
1176         if (retval) {
1177
1178                 pstring user;
1179
1180                 /* Let's try to first get the TGT, for that we need a
1181                    password. */
1182
1183                 if (opt_password == NULL) {
1184                         DEBUG(10, ("Requesting password\n"));
1185                         x_fprintf(x_stdout, "PW\n");
1186                         return True;
1187                 }
1188
1189                 pstr_sprintf(user, "%s@%s", opt_username, opt_domain);
1190
1191                 if ((retval = kerberos_kinit_password(user, opt_password,
1192                                                       0, NULL, NULL))) {
1193                         DEBUG(10, ("Requesting TGT failed: %s\n", error_message(retval)));
1194                         return False;
1195                 }
1196
1197                 retval = cli_krb5_get_ticket(principal, 0, &tkt, &session_key_krb5, 0);
1198
1199                 if (retval) {
1200                         DEBUG(10, ("Kinit suceeded, but getting a ticket failed: %s\n", error_message(retval)));
1201                         return False;
1202                 }
1203         }
1204
1205         data_blob_free(&session_key_krb5);
1206
1207         ZERO_STRUCT(reply);
1208
1209         reply.type = SPNEGO_NEG_TOKEN_INIT;
1210         reply.negTokenInit.mechTypes = my_mechs;
1211         reply.negTokenInit.reqFlags = 0;
1212         reply.negTokenInit.mechToken = tkt;
1213         reply.negTokenInit.mechListMIC = data_blob(NULL, 0);
1214
1215         len = write_spnego_data(&to_server, &reply);
1216         data_blob_free(&tkt);
1217
1218         if (len == -1) {
1219                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1220                 return False;
1221         }
1222
1223         reply_base64 = base64_encode_data_blob(to_server);
1224         x_fprintf(x_stdout, "KK %s *\n", reply_base64);
1225
1226         SAFE_FREE(reply_base64);
1227         data_blob_free(&to_server);
1228         DEBUG(10, ("sent GSS-SPNEGO KERBEROS5 negTokenInit\n"));
1229         return True;
1230 }
1231
1232 static void manage_client_krb5_targ(SPNEGO_DATA spnego)
1233 {
1234         switch (spnego.negTokenTarg.negResult) {
1235         case SPNEGO_ACCEPT_INCOMPLETE:
1236                 DEBUG(1, ("Got a Kerberos negTokenTarg with ACCEPT_INCOMPLETE\n"));
1237                 x_fprintf(x_stdout, "BH\n");
1238                 break;
1239         case SPNEGO_ACCEPT_COMPLETED:
1240                 DEBUG(10, ("Accept completed\n"));
1241                 x_fprintf(x_stdout, "AF\n");
1242                 break;
1243         case SPNEGO_REJECT:
1244                 DEBUG(10, ("Rejected\n"));
1245                 x_fprintf(x_stdout, "NA\n");
1246                 break;
1247         default:
1248                 DEBUG(1, ("Got an invalid negTokenTarg\n"));
1249                 x_fprintf(x_stdout, "AF\n");
1250         }
1251 }
1252
1253 #endif
1254
1255 static void manage_gss_spnego_client_request(enum stdio_helper_mode stdio_helper_mode,
1256                                              char *buf, int length)
1257 {
1258         DATA_BLOB request;
1259         SPNEGO_DATA spnego;
1260         ssize_t len;
1261
1262         if (strlen(buf) <= 3) {
1263                 DEBUG(1, ("SPNEGO query [%s] too short\n", buf));
1264                 x_fprintf(x_stdout, "BH\n");
1265                 return;
1266         }
1267
1268         request = base64_decode_data_blob(buf+3);
1269
1270         if (strncmp(buf, "PW ", 3) == 0) {
1271
1272                 /* We asked for a password and obviously got it :-) */
1273
1274                 opt_password = SMB_STRNDUP((const char *)request.data, request.length);
1275
1276                 if (opt_password == NULL) {
1277                         DEBUG(1, ("Out of memory\n"));
1278                         x_fprintf(x_stdout, "BH\n");
1279                         data_blob_free(&request);
1280                         return;
1281                 }
1282
1283                 x_fprintf(x_stdout, "OK\n");
1284                 data_blob_free(&request);
1285                 return;
1286         }
1287
1288         if ( (strncmp(buf, "TT ", 3) != 0) &&
1289              (strncmp(buf, "AF ", 3) != 0) &&
1290              (strncmp(buf, "NA ", 3) != 0) ) {
1291                 DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
1292                 x_fprintf(x_stdout, "BH\n");
1293                 data_blob_free(&request);
1294                 return;
1295         }
1296
1297         /* So we got a server challenge to generate a SPNEGO
1298            client-to-server request... */
1299
1300         len = read_spnego_data(request, &spnego);
1301         data_blob_free(&request);
1302
1303         if (len == -1) {
1304                 DEBUG(1, ("Could not read SPNEGO data for [%s]\n", buf));
1305                 x_fprintf(x_stdout, "BH\n");
1306                 return;
1307         }
1308
1309         if (spnego.type == SPNEGO_NEG_TOKEN_INIT) {
1310
1311                 /* The server offers a list of mechanisms */
1312
1313                 const char **mechType = (const char **)spnego.negTokenInit.mechTypes;
1314
1315                 while (*mechType != NULL) {
1316
1317 #ifdef HAVE_KRB5
1318                         if ( (strcmp(*mechType, OID_KERBEROS5_OLD) == 0) ||
1319                              (strcmp(*mechType, OID_KERBEROS5) == 0) ) {
1320                                 if (manage_client_krb5_init(spnego))
1321                                         goto out;
1322                         }
1323 #endif
1324
1325                         if (strcmp(*mechType, OID_NTLMSSP) == 0) {
1326                                 if (manage_client_ntlmssp_init(spnego))
1327                                         goto out;
1328                         }
1329
1330                         mechType++;
1331                 }
1332
1333                 DEBUG(1, ("Server offered no compatible mechanism\n"));
1334                 x_fprintf(x_stdout, "BH\n");
1335                 return;
1336         }
1337
1338         if (spnego.type == SPNEGO_NEG_TOKEN_TARG) {
1339
1340                 if (spnego.negTokenTarg.supportedMech == NULL) {
1341                         /* On accept/reject Windows does not send the
1342                            mechanism anymore. Handle that here and
1343                            shut down the mechanisms. */
1344
1345                         switch (spnego.negTokenTarg.negResult) {
1346                         case SPNEGO_ACCEPT_COMPLETED:
1347                                 x_fprintf(x_stdout, "AF\n");
1348                                 break;
1349                         case SPNEGO_REJECT:
1350                                 x_fprintf(x_stdout, "NA\n");
1351                                 break;
1352                         default:
1353                                 DEBUG(1, ("Got a negTokenTarg with no mech and an "
1354                                           "unknown negResult: %d\n",
1355                                           spnego.negTokenTarg.negResult));
1356                                 x_fprintf(x_stdout, "BH\n");
1357                         }
1358
1359                         ntlmssp_end(&client_ntlmssp_state);
1360                         goto out;
1361                 }
1362
1363                 if (strcmp(spnego.negTokenTarg.supportedMech,
1364                            OID_NTLMSSP) == 0) {
1365                         manage_client_ntlmssp_targ(spnego);
1366                         goto out;
1367                 }
1368
1369 #if HAVE_KRB5
1370                 if (strcmp(spnego.negTokenTarg.supportedMech,
1371                            OID_KERBEROS5_OLD) == 0) {
1372                         manage_client_krb5_targ(spnego);
1373                         goto out;
1374                 }
1375 #endif
1376
1377         }
1378
1379         DEBUG(1, ("Got an SPNEGO token I could not handle [%s]!\n", buf));
1380         x_fprintf(x_stdout, "BH\n");
1381         return;
1382
1383  out:
1384         free_spnego_data(&spnego);
1385         return;
1386 }
1387
1388 static void manage_ntlm_server_1_request(enum stdio_helper_mode stdio_helper_mode,
1389                                          char *buf, int length)
1390 {
1391         char *request, *parameter;
1392         static DATA_BLOB challenge;
1393         static DATA_BLOB lm_response;
1394         static DATA_BLOB nt_response;
1395         static char *full_username;
1396         static char *username;
1397         static char *domain;
1398         static char *plaintext_password;
1399         static BOOL ntlm_server_1_user_session_key;
1400         static BOOL ntlm_server_1_lm_session_key;
1401
1402         if (strequal(buf, ".")) {
1403                 if (!full_username && !username) {
1404                         x_fprintf(x_stdout, "Error: No username supplied!\n");
1405                 } else if (plaintext_password) {
1406                         /* handle this request as plaintext */
1407                         if (!full_username) {
1408                                 if (asprintf(&full_username, "%s%c%s", domain, winbind_separator(), username) == -1) {
1409                                         x_fprintf(x_stdout, "Error: Out of memory in asprintf!\n.\n");
1410                                         return;
1411                                 }
1412                         }
1413                         if (check_plaintext_auth(full_username, plaintext_password, False)) {
1414                                 x_fprintf(x_stdout, "Authenticated: Yes\n");
1415                         } else {
1416                                 x_fprintf(x_stdout, "Authenticated: No\n");
1417                         }
1418                 } else if (!lm_response.data && !nt_response.data) {
1419                         x_fprintf(x_stdout, "Error: No password supplied!\n");
1420                 } else if (!challenge.data) {
1421                         x_fprintf(x_stdout, "Error: No lanman-challenge supplied!\n");
1422                 } else {
1423                         char *error_string = NULL;
1424                         uchar lm_key[8];
1425                         uchar user_session_key[16];
1426                         uint32 flags = 0;
1427
1428                         if (full_username && !username) {
1429                                 fstring fstr_user;
1430                                 fstring fstr_domain;
1431
1432                                 if (!parse_ntlm_auth_domain_user(full_username, fstr_user, fstr_domain)) {
1433                                         /* username might be 'tainted', don't print into our new-line deleimianted stream */
1434                                         x_fprintf(x_stdout, "Error: Could not parse into domain and username\n");
1435                                 }
1436                                 SAFE_FREE(username);
1437                                 SAFE_FREE(domain);
1438                                 username = smb_xstrdup(fstr_user);
1439                                 domain = smb_xstrdup(fstr_domain);
1440                         }
1441
1442                         if (!domain) {
1443                                 domain = smb_xstrdup(get_winbind_domain());
1444                         }
1445
1446                         if (ntlm_server_1_lm_session_key)
1447                                 flags |= WBFLAG_PAM_LMKEY;
1448
1449                         if (ntlm_server_1_user_session_key)
1450                                 flags |= WBFLAG_PAM_USER_SESSION_KEY;
1451
1452                         if (!NT_STATUS_IS_OK(
1453                                     contact_winbind_auth_crap(username,
1454                                                               domain,
1455                                                               global_myname(),
1456                                                               &challenge,
1457                                                               &lm_response,
1458                                                               &nt_response,
1459                                                               flags,
1460                                                               lm_key,
1461                                                               user_session_key,
1462                                                               &error_string,
1463                                                               NULL))) {
1464
1465                                 x_fprintf(x_stdout, "Authenticated: No\n");
1466                                 x_fprintf(x_stdout, "Authentication-Error: %s\n.\n", error_string);
1467                                 SAFE_FREE(error_string);
1468                         } else {
1469                                 static char zeros[16];
1470                                 char *hex_lm_key;
1471                                 char *hex_user_session_key;
1472
1473                                 x_fprintf(x_stdout, "Authenticated: Yes\n");
1474
1475                                 if (ntlm_server_1_lm_session_key
1476                                     && (memcmp(zeros, lm_key,
1477                                                sizeof(lm_key)) != 0)) {
1478                                         hex_lm_key = hex_encode(NULL,
1479                                                                 (const unsigned char *)lm_key,
1480                                                                 sizeof(lm_key));
1481                                         x_fprintf(x_stdout, "LANMAN-Session-Key: %s\n", hex_lm_key);
1482                                         talloc_free(hex_lm_key);
1483                                 }
1484
1485                                 if (ntlm_server_1_user_session_key
1486                                     && (memcmp(zeros, user_session_key,
1487                                                sizeof(user_session_key)) != 0)) {
1488                                         hex_user_session_key = hex_encode(NULL,
1489                                                                           (const unsigned char *)user_session_key,
1490                                                                           sizeof(user_session_key));
1491                                         x_fprintf(x_stdout, "User-Session-Key: %s\n", hex_user_session_key);
1492                                         talloc_free(hex_user_session_key);
1493                                 }
1494                         }
1495                 }
1496                 /* clear out the state */
1497                 challenge = data_blob(NULL, 0);
1498                 nt_response = data_blob(NULL, 0);
1499                 lm_response = data_blob(NULL, 0);
1500                 SAFE_FREE(full_username);
1501                 SAFE_FREE(username);
1502                 SAFE_FREE(domain);
1503                 SAFE_FREE(plaintext_password);
1504                 ntlm_server_1_user_session_key = False;
1505                 ntlm_server_1_lm_session_key = False;
1506                 x_fprintf(x_stdout, ".\n");
1507
1508                 return;
1509         }
1510
1511         request = buf;
1512
1513         /* Indicates a base64 encoded structure */
1514         parameter = strstr_m(request, ":: ");
1515         if (!parameter) {
1516                 parameter = strstr_m(request, ": ");
1517
1518                 if (!parameter) {
1519                         DEBUG(0, ("Parameter not found!\n"));
1520                         x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
1521                         return;
1522                 }
1523
1524                 parameter[0] ='\0';
1525                 parameter++;
1526                 parameter[0] ='\0';
1527                 parameter++;
1528
1529         } else {
1530                 parameter[0] ='\0';
1531                 parameter++;
1532                 parameter[0] ='\0';
1533                 parameter++;
1534                 parameter[0] ='\0';
1535                 parameter++;
1536
1537                 base64_decode_inplace(parameter);
1538         }
1539
1540         if (strequal(request, "LANMAN-Challenge")) {
1541                 challenge = strhex_to_data_blob(NULL, parameter);
1542                 if (challenge.length != 8) {
1543                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 8)\n.\n",
1544                                   parameter,
1545                                   (int)challenge.length);
1546                         challenge = data_blob(NULL, 0);
1547                 }
1548         } else if (strequal(request, "NT-Response")) {
1549                 nt_response = strhex_to_data_blob(NULL, parameter);
1550                 if (nt_response.length < 24) {
1551                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (only got %d bytes, needed at least 24)\n.\n",
1552                                   parameter,
1553                                   (int)nt_response.length);
1554                         nt_response = data_blob(NULL, 0);
1555                 }
1556         } else if (strequal(request, "LANMAN-Response")) {
1557                 lm_response = strhex_to_data_blob(NULL, parameter);
1558                 if (lm_response.length != 24) {
1559                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 24)\n.\n",
1560                                   parameter,
1561                                   (int)lm_response.length);
1562                         lm_response = data_blob(NULL, 0);
1563                 }
1564         } else if (strequal(request, "Password")) {
1565                 plaintext_password = smb_xstrdup(parameter);
1566         } else if (strequal(request, "NT-Domain")) {
1567                 domain = smb_xstrdup(parameter);
1568         } else if (strequal(request, "Username")) {
1569                 username = smb_xstrdup(parameter);
1570         } else if (strequal(request, "Full-Username")) {
1571                 full_username = smb_xstrdup(parameter);
1572         } else if (strequal(request, "Request-User-Session-Key")) {
1573                 ntlm_server_1_user_session_key = strequal(parameter, "Yes");
1574         } else if (strequal(request, "Request-LanMan-Session-Key")) {
1575                 ntlm_server_1_lm_session_key = strequal(parameter, "Yes");
1576         } else {
1577                 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
1578         }
1579 }
1580
1581 static void manage_squid_request(enum stdio_helper_mode helper_mode, stdio_helper_function fn)
1582 {
1583         char buf[SQUID_BUFFER_SIZE+1];
1584         int length;
1585         char *c;
1586         static BOOL err;
1587
1588         /* this is not a typo - x_fgets doesn't work too well under squid */
1589         if (fgets(buf, sizeof(buf)-1, stdin) == NULL) {
1590                 if (ferror(stdin)) {
1591                         DEBUG(1, ("fgets() failed! dying..... errno=%d (%s)\n", ferror(stdin),
1592                                   strerror(ferror(stdin))));
1593
1594                         exit(1);    /* BIIG buffer */
1595                 }
1596                 exit(0);
1597         }
1598
1599         c=memchr(buf,'\n',sizeof(buf)-1);
1600         if (c) {
1601                 *c = '\0';
1602                 length = c-buf;
1603         } else {
1604                 err = 1;
1605                 return;
1606         }
1607         if (err) {
1608                 DEBUG(2, ("Oversized message\n"));
1609                 x_fprintf(x_stderr, "ERR\n");
1610                 err = 0;
1611                 return;
1612         }
1613
1614         DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
1615
1616         if (buf[0] == '\0') {
1617                 DEBUG(2, ("Invalid Request\n"));
1618                 x_fprintf(x_stderr, "ERR\n");
1619                 return;
1620         }
1621
1622         fn(helper_mode, buf, length);
1623 }
1624
1625
1626 static void squid_stream(enum stdio_helper_mode stdio_mode, stdio_helper_function fn) {
1627         /* initialize FDescs */
1628         x_setbuf(x_stdout, NULL);
1629         x_setbuf(x_stderr, NULL);
1630         while(1) {
1631                 manage_squid_request(stdio_mode, fn);
1632         }
1633 }
1634
1635
1636 /* Authenticate a user with a challenge/response */
1637
1638 static BOOL check_auth_crap(void)
1639 {
1640         NTSTATUS nt_status;
1641         uint32 flags = 0;
1642         char lm_key[8];
1643         char user_session_key[16];
1644         char *hex_lm_key;
1645         char *hex_user_session_key;
1646         char *error_string;
1647         static uint8 zeros[16];
1648
1649         x_setbuf(x_stdout, NULL);
1650
1651         if (request_lm_key)
1652                 flags |= WBFLAG_PAM_LMKEY;
1653
1654         if (request_user_session_key)
1655                 flags |= WBFLAG_PAM_USER_SESSION_KEY;
1656
1657         flags |= WBFLAG_PAM_NT_STATUS_SQUASH;
1658
1659         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
1660                                               opt_workstation,
1661                                               &opt_challenge,
1662                                               &opt_lm_response,
1663                                               &opt_nt_response,
1664                                               flags,
1665                                               (unsigned char *)lm_key,
1666                                               (unsigned char *)user_session_key,
1667                                               &error_string, NULL);
1668
1669         if (!NT_STATUS_IS_OK(nt_status)) {
1670                 x_fprintf(x_stdout, "%s (0x%x)\n",
1671                           error_string,
1672                           NT_STATUS_V(nt_status));
1673                 SAFE_FREE(error_string);
1674                 return False;
1675         }
1676
1677         if (request_lm_key
1678             && (memcmp(zeros, lm_key,
1679                        sizeof(lm_key)) != 0)) {
1680                 hex_lm_key = hex_encode(NULL, (const unsigned char *)lm_key,
1681                                         sizeof(lm_key));
1682                 x_fprintf(x_stdout, "LM_KEY: %s\n", hex_lm_key);
1683                 talloc_free(hex_lm_key);
1684         }
1685         if (request_user_session_key
1686             && (memcmp(zeros, user_session_key,
1687                        sizeof(user_session_key)) != 0)) {
1688                 hex_user_session_key = hex_encode(NULL, (const unsigned char *)user_session_key,
1689                                                   sizeof(user_session_key));
1690                 x_fprintf(x_stdout, "NT_KEY: %s\n", hex_user_session_key);
1691                 talloc_free(hex_user_session_key);
1692         }
1693
1694         return True;
1695 }
1696
1697 /* Main program */
1698
1699 enum {
1700         OPT_USERNAME = 1000,
1701         OPT_DOMAIN,
1702         OPT_WORKSTATION,
1703         OPT_CHALLENGE,
1704         OPT_RESPONSE,
1705         OPT_LM,
1706         OPT_NT,
1707         OPT_PASSWORD,
1708         OPT_LM_KEY,
1709         OPT_USER_SESSION_KEY,
1710         OPT_DIAGNOSTICS,
1711         OPT_REQUIRE_MEMBERSHIP
1712 };
1713
1714  int main(int argc, const char **argv)
1715 {
1716         int opt;
1717         static const char *helper_protocol;
1718         static int diagnostics;
1719
1720         static const char *hex_challenge;
1721         static const char *hex_lm_response;
1722         static const char *hex_nt_response;
1723
1724         poptContext pc;
1725
1726         /* NOTE: DO NOT change this interface without considering the implications!
1727            This is an external interface, which other programs will use to interact
1728            with this helper.
1729         */
1730
1731         /* We do not use single-letter command abbreviations, because they harm future
1732            interface stability. */
1733
1734         struct poptOption long_options[] = {
1735                 POPT_AUTOHELP
1736                 { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
1737                 { "username", 0, POPT_ARG_STRING, &opt_username, OPT_USERNAME, "username"},
1738                 { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
1739                 { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
1740                 { "challenge", 0, POPT_ARG_STRING, &hex_challenge, OPT_CHALLENGE, "challenge (HEX encoded)"},
1741                 { "lm-response", 0, POPT_ARG_STRING, &hex_lm_response, OPT_LM, "LM Response to the challenge (HEX encoded)"},
1742                 { "nt-response", 0, POPT_ARG_STRING, &hex_nt_response, OPT_NT, "NT or NTLMv2 Response to the challenge (HEX encoded)"},
1743                 { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
1744                 { "request-lm-key", 0, POPT_ARG_NONE, &request_lm_key, OPT_LM_KEY, "Retrieve LM session key"},
1745                 { "request-nt-key", 0, POPT_ARG_NONE, &request_user_session_key, OPT_USER_SESSION_KEY, "Retrieve User (NT) session key"},
1746                 { "diagnostics", 0, POPT_ARG_NONE, &diagnostics, OPT_DIAGNOSTICS, "Perform diagnostics on the authentictaion chain"},
1747                 { "require-membership-of", 0, POPT_ARG_STRING, &require_membership_of, OPT_REQUIRE_MEMBERSHIP, "Require that a user be a member of this group (either name or SID) for authentication to succeed" },
1748                 POPT_COMMON_SAMBA
1749                 POPT_TABLEEND
1750         };
1751
1752         /* Samba client initialisation */
1753
1754         dbf = x_stderr;
1755
1756         /* Samba client initialisation */
1757
1758         if (!lp_load(dyn_CONFIGFILE, True, False, False)) {
1759                 d_fprintf(stderr, "ntlm_auth: error opening config file %s. Error was %s\n",
1760                         dyn_CONFIGFILE, strerror(errno));
1761                 exit(1);
1762         }
1763
1764         /* Parse options */
1765
1766         pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
1767
1768         /* Parse command line options */
1769
1770         if (argc == 1) {
1771                 poptPrintHelp(pc, stderr, 0);
1772                 return 1;
1773         }
1774
1775         pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
1776                             POPT_CONTEXT_KEEP_FIRST);
1777
1778         while((opt = poptGetNextOpt(pc)) != -1) {
1779                 switch (opt) {
1780                 case OPT_CHALLENGE:
1781                         opt_challenge = strhex_to_data_blob(NULL, hex_challenge);
1782                         if (opt_challenge.length != 8) {
1783                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
1784                                           hex_challenge,
1785                                           (int)opt_challenge.length);
1786                                 exit(1);
1787                         }
1788                         break;
1789                 case OPT_LM:
1790                         opt_lm_response = strhex_to_data_blob(NULL, hex_lm_response);
1791                         if (opt_lm_response.length != 24) {
1792                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
1793                                           hex_lm_response,
1794                                           (int)opt_lm_response.length);
1795                                 exit(1);
1796                         }
1797                         break;
1798
1799                 case OPT_NT:
1800                         opt_nt_response = strhex_to_data_blob(NULL, hex_nt_response);
1801                         if (opt_nt_response.length < 24) {
1802                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
1803                                           hex_nt_response,
1804                                           (int)opt_nt_response.length);
1805                                 exit(1);
1806                         }
1807                         break;
1808
1809                 case OPT_REQUIRE_MEMBERSHIP:
1810                         if (StrnCaseCmp("S-", require_membership_of, 2) == 0) {
1811                                 require_membership_of_sid = require_membership_of;
1812                         }
1813                         break;
1814                 }
1815         }
1816
1817         if (helper_protocol) {
1818                 int i;
1819                 for (i=0; i<NUM_HELPER_MODES; i++) {
1820                         if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
1821                                 squid_stream(stdio_helper_protocols[i].mode, stdio_helper_protocols[i].fn);
1822                                 exit(0);
1823                         }
1824                 }
1825                 x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol);
1826
1827                 for (i=0; i<NUM_HELPER_MODES; i++) {
1828                         x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name);
1829                 }
1830
1831                 exit(1);
1832         }
1833
1834         if (!opt_username) {
1835                 x_fprintf(x_stderr, "username must be specified!\n\n");
1836                 poptPrintHelp(pc, stderr, 0);
1837                 exit(1);
1838         }
1839
1840         if (opt_domain == NULL) {
1841                 opt_domain = get_winbind_domain();
1842         }
1843
1844         if (opt_workstation == NULL) {
1845                 opt_workstation = "";
1846         }
1847
1848         if (opt_challenge.length) {
1849                 if (!check_auth_crap()) {
1850                         exit(1);
1851                 }
1852                 exit(0);
1853         }
1854
1855         if (!opt_password) {
1856                 opt_password = getpass("password: ");
1857         }
1858
1859         if (diagnostics) {
1860                 if (!diagnose_ntlm_auth()) {
1861                         return 1;
1862                 }
1863         } else {
1864                 fstring user;
1865
1866                 fstr_sprintf(user, "%s%c%s", opt_domain, winbind_separator(), opt_username);
1867                 if (!check_plaintext_auth(user, opt_password, True)) {
1868                         return 1;
1869                 }
1870         }
1871
1872         /* Exit code */
1873
1874         poptFreeContext(pc);
1875         return 0;
1876 }