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_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(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(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(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, False);
 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_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(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_sid = strdup(response.data.sid.sid);
 242
 243         if (require_membership_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_sid)
 269                 fstrcpy(request.data.auth.required_membership_sid, require_membership_sid);
 270
 271         result = winbindd_request(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_sid)
 327                 fstrcpy(request.data.auth_crap.required_membership_sid, require_membership_sid);
 328
 329         if (push_utf8_fstring(request.data.auth_crap.user, username) == -1) {
 330                 *error_string = smb_xstrdup(
 331                         "unable to create utf8 string for username");
 332                 return NT_STATUS_UNSUCCESSFUL;
 333         }
 334
 335         if (push_utf8_fstring(request.data.auth_crap.domain, domain) == -1) {
 336                 *error_string = smb_xstrdup(
 337                         "unable to create utf8 string for domain");
 338                 return NT_STATUS_UNSUCCESSFUL;
 339         }
 340
 341         if (push_utf8_fstring(request.data.auth_crap.workstation,
 342                               workstation) == -1) {
 343                 *error_string = smb_xstrdup(
 344                         "unable to create utf8 string for workstation");
 345                 return NT_STATUS_UNSUCCESSFUL;
 346         }
 347
 348         memcpy(request.data.auth_crap.chal, challenge->data, MIN(challenge->length, 8));
 349
 350         if (lm_response && lm_response->length) {
 351                 memcpy(request.data.auth_crap.lm_resp,
 352                        lm_response->data,
 353                        MIN(lm_response->length, sizeof(request.data.auth_crap.lm_resp)));
 354                 request.data.auth_crap.lm_resp_len = lm_response->length;
 355         }
 356
 357         if (nt_response && nt_response->length) {
 358                 memcpy(request.data.auth_crap.nt_resp,
 359                        nt_response->data,
 360                        MIN(nt_response->length, sizeof(request.data.auth_crap.nt_resp)));
 361                 request.data.auth_crap.nt_resp_len = nt_response->length;
 362         }
 363
 364         result = winbindd_request(WINBINDD_PAM_AUTH_CRAP, &request, &response);
 365
 366         /* Display response */
 367
 368         if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
 369                 nt_status = NT_STATUS_UNSUCCESSFUL;
 370                 if (error_string)
 371                         *error_string = smb_xstrdup("Reading winbind reply failed!");
 372                 return nt_status;
 373         }
 374
 375         nt_status = (NT_STATUS(response.data.auth.nt_status));
 376         if (!NT_STATUS_IS_OK(nt_status)) {
 377                 if (error_string)
 378                         *error_string = smb_xstrdup(response.data.auth.error_string);
 379                 return nt_status;
 380         }
 381
 382         if ((flags & WBFLAG_PAM_LMKEY) && lm_key) {
 383                 memcpy(lm_key, response.data.auth.first_8_lm_hash,
 384                        sizeof(response.data.auth.first_8_lm_hash));
 385         }
 386         if ((flags & WBFLAG_PAM_USER_SESSION_KEY) && user_session_key) {
 387                 memcpy(user_session_key, response.data.auth.user_session_key,
 388                         sizeof(response.data.auth.user_session_key));
 389         }
 390
 391         if (flags & WBFLAG_PAM_UNIX_NAME) {
 392                 if (pull_utf8_allocate(unix_name, (char *)response.extra_data) == -1) {
 393                         return NT_STATUS_NO_MEMORY;
 394                 }
 395         }
 396
 397         return nt_status;
 398 }
 399
 400 static NTSTATUS winbind_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
 401 {
 402         static const char zeros[16];
 403         NTSTATUS nt_status;
 404         char *error_string;
 405         uint8 lm_key[8];
 406         uint8 user_sess_key[16];
 407         char *unix_name;
 408
 409         nt_status = contact_winbind_auth_crap(ntlmssp_state->user, ntlmssp_state->domain,
 410                                               ntlmssp_state->workstation,
 411                                               &ntlmssp_state->chal,
 412                                               &ntlmssp_state->lm_resp,
 413                                               &ntlmssp_state->nt_resp,
 414                                               WBFLAG_PAM_LMKEY | WBFLAG_PAM_USER_SESSION_KEY | WBFLAG_PAM_UNIX_NAME,
 415                                               lm_key, user_sess_key,
 416                                               &error_string, &unix_name);
 417
 418         if (NT_STATUS_IS_OK(nt_status)) {
 419                 if (memcmp(lm_key, zeros, 8) != 0) {
 420                         *lm_session_key = data_blob(NULL, 16);
 421                         memcpy(lm_session_key->data, lm_key, 8);
 422                         memset(lm_session_key->data+8, '\0', 8);
 423                 }
 424
 425                 if (memcmp(user_sess_key, zeros, 16) != 0) {
 426                         *user_session_key = data_blob(user_sess_key, 16);
 427                 }
 428                 ntlmssp_state->auth_context = talloc_strdup(ntlmssp_state->mem_ctx, unix_name);
 429                 SAFE_FREE(unix_name);
 430         } else {
 431                 DEBUG(NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED) ? 0 : 3,
 432                       ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
 433                        ntlmssp_state->domain, ntlmssp_state->user,
 434                        ntlmssp_state->workstation,
 435                        error_string ? error_string : "unknown error (NULL)"));
 436                 ntlmssp_state->auth_context = NULL;
 437         }
 438         return nt_status;
 439 }
 440
 441 static NTSTATUS local_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
 442 {
 443         NTSTATUS nt_status;
 444         uint8 lm_pw[16], nt_pw[16];
 445
 446         nt_lm_owf_gen (opt_password, nt_pw, lm_pw);
 447
 448         nt_status = ntlm_password_check(ntlmssp_state->mem_ctx,
 449                                         &ntlmssp_state->chal,
 450                                         &ntlmssp_state->lm_resp,
 451                                         &ntlmssp_state->nt_resp,
 452                                         NULL, NULL,
 453                                         ntlmssp_state->user,
 454                                         ntlmssp_state->user,
 455                                         ntlmssp_state->domain,
 456                                         lm_pw, nt_pw, user_session_key, lm_session_key);
 457
 458         if (NT_STATUS_IS_OK(nt_status)) {
 459                 ntlmssp_state->auth_context = talloc_asprintf(ntlmssp_state->mem_ctx,
 460                                                               "%s%c%s", ntlmssp_state->domain,
 461                                                               *lp_winbind_separator(),
 462                                                               ntlmssp_state->user);
 463         } else {
 464                 DEBUG(3, ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
 465                           ntlmssp_state->domain, ntlmssp_state->user, ntlmssp_state->workstation,
 466                           nt_errstr(nt_status)));
 467                 ntlmssp_state->auth_context = NULL;
 468         }
 469         return nt_status;
 470 }
 471
 472 static NTSTATUS ntlm_auth_start_ntlmssp_client(NTLMSSP_STATE **client_ntlmssp_state)
 473 {
 474         NTSTATUS status;
 475         if ( (opt_username == NULL) || (opt_domain == NULL) ) {
 476                 DEBUG(1, ("Need username and domain for NTLMSSP\n"));
 477                 return status;
 478         }
 479
 480         status = ntlmssp_client_start(client_ntlmssp_state);
 481
 482         if (!NT_STATUS_IS_OK(status)) {
 483                 DEBUG(1, ("Could not start NTLMSSP client: %s\n",
 484                           nt_errstr(status)));
 485                 ntlmssp_end(client_ntlmssp_state);
 486                 return status;
 487         }
 488
 489         status = ntlmssp_set_username(*client_ntlmssp_state, opt_username);
 490
 491         if (!NT_STATUS_IS_OK(status)) {
 492                 DEBUG(1, ("Could not set username: %s\n",
 493                           nt_errstr(status)));
 494                 ntlmssp_end(client_ntlmssp_state);
 495                 return status;
 496         }
 497
 498         status = ntlmssp_set_domain(*client_ntlmssp_state, opt_domain);
 499
 500         if (!NT_STATUS_IS_OK(status)) {
 501                 DEBUG(1, ("Could not set domain: %s\n",
 502                           nt_errstr(status)));
 503                 ntlmssp_end(client_ntlmssp_state);
 504                 return status;
 505         }
 506
 507         status = ntlmssp_set_password(*client_ntlmssp_state, opt_password);
 508
 509         if (!NT_STATUS_IS_OK(status)) {
 510                 DEBUG(1, ("Could not set password: %s\n",
 511                           nt_errstr(status)));
 512                 ntlmssp_end(client_ntlmssp_state);
 513                 return status;
 514         }
 515         return NT_STATUS_OK;
 516 }
 517
 518 static NTSTATUS ntlm_auth_start_ntlmssp_server(NTLMSSP_STATE **ntlmssp_state)
 519 {
 520         NTSTATUS status = ntlmssp_server_start(ntlmssp_state);
 521
 522         if (!NT_STATUS_IS_OK(status)) {
 523                 DEBUG(1, ("Could not start NTLMSSP client: %s\n",
 524                           nt_errstr(status)));
 525                 return status;
 526         }
 527
 528         /* Have we been given a local password, or should we ask winbind? */
 529         if (opt_password) {
 530                 (*ntlmssp_state)->check_password = local_pw_check;
 531                 (*ntlmssp_state)->get_domain = lp_workgroup;
 532                 (*ntlmssp_state)->get_global_myname = global_myname;
 533         } else {
 534                 (*ntlmssp_state)->check_password = winbind_pw_check;
 535                 (*ntlmssp_state)->get_domain = get_winbind_domain;
 536                 (*ntlmssp_state)->get_global_myname = get_winbind_netbios_name;
 537         }
 538         return NT_STATUS_OK;
 539 }
 540
 541 static void manage_squid_ntlmssp_request(enum stdio_helper_mode stdio_helper_mode,
 542                                          char *buf, int length)
 543 {
 544         static NTLMSSP_STATE *ntlmssp_state = NULL;
 545         DATA_BLOB request, reply;
 546         NTSTATUS nt_status;
 547
 548         if (strlen(buf) < 2) {
 549                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 550                 x_fprintf(x_stdout, "BH\n");
 551                 return;
 552         }
 553
 554         if (strlen(buf) > 3) {
 555                 request = base64_decode_data_blob(buf + 3);
 556         } else {
 557                 request = data_blob(NULL, 0);
 558         }
 559
 560         if ((strncmp(buf, "PW ", 3) == 0)) {
 561                 /* The calling application wants us to use a local password (rather than winbindd) */
 562
 563                 opt_password = strndup((const char *)request.data, request.length);
 564
 565                 if (opt_password == NULL) {
 566                         DEBUG(1, ("Out of memory\n"));
 567                         x_fprintf(x_stdout, "BH\n");
 568                         data_blob_free(&request);
 569                         return;
 570                 }
 571
 572                 x_fprintf(x_stdout, "OK\n");
 573                 data_blob_free(&request);
 574                 return;
 575         }
 576
 577         if (strncmp(buf, "YR", 2) == 0) {
 578                 if (ntlmssp_state)
 579                         ntlmssp_end(&ntlmssp_state);
 580         } else if (strncmp(buf, "KK", 2) == 0) {
 581
 582         } else {
 583                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 584                 x_fprintf(x_stdout, "BH\n");
 585                 return;
 586         }
 587
 588         if (!ntlmssp_state) {
 589                 if (!NT_STATUS_IS_OK(nt_status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
 590                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
 591                         return;
 592                 }
 593         }
 594
 595         DEBUG(10, ("got NTLMSSP packet:\n"));
 596         dump_data(10, (const char *)request.data, request.length);
 597
 598         nt_status = ntlmssp_update(ntlmssp_state, request, &reply);
 599
 600         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 601                 char *reply_base64 = base64_encode_data_blob(reply);
 602                 x_fprintf(x_stdout, "TT %s\n", reply_base64);
 603                 SAFE_FREE(reply_base64);
 604                 data_blob_free(&reply);
 605                 DEBUG(10, ("NTLMSSP challenge\n"));
 606         } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
 607                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
 608                 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
 609
 610                 ntlmssp_end(&ntlmssp_state);
 611         } else if (!NT_STATUS_IS_OK(nt_status)) {
 612                 x_fprintf(x_stdout, "NA %s\n", nt_errstr(nt_status));
 613                 DEBUG(10, ("NTLMSSP %s\n", nt_errstr(nt_status)));
 614         } else {
 615                 x_fprintf(x_stdout, "AF %s\n", (char *)ntlmssp_state->auth_context);
 616                 DEBUG(10, ("NTLMSSP OK!\n"));
 617         }
 618
 619         data_blob_free(&request);
 620 }
 621
 622 static void manage_client_ntlmssp_request(enum stdio_helper_mode stdio_helper_mode,
 623                                          char *buf, int length)
 624 {
 625         static NTLMSSP_STATE *ntlmssp_state = NULL;
 626         DATA_BLOB request, reply;
 627         NTSTATUS nt_status;
 628         BOOL first = False;
 629
 630         if (strlen(buf) < 2) {
 631                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 632                 x_fprintf(x_stdout, "BH\n");
 633                 return;
 634         }
 635
 636         if (strlen(buf) > 3) {
 637                 request = base64_decode_data_blob(buf + 3);
 638         } else {
 639                 request = data_blob(NULL, 0);
 640         }
 641
 642         if (strncmp(buf, "PW ", 3) == 0) {
 643                 /* We asked for a password and obviously got it :-) */
 644
 645                 opt_password = strndup((const char *)request.data, request.length);
 646
 647                 if (opt_password == NULL) {
 648                         DEBUG(1, ("Out of memory\n"));
 649                         x_fprintf(x_stdout, "BH\n");
 650                         data_blob_free(&request);
 651                         return;
 652                 }
 653
 654                 x_fprintf(x_stdout, "OK\n");
 655                 data_blob_free(&request);
 656                 return;
 657         }
 658
 659         if (opt_password == NULL) {
 660
 661                 /* Request a password from the calling process.  After
 662                    sending it, the calling process should retry asking for the negotiate. */
 663
 664                 DEBUG(10, ("Requesting password\n"));
 665                 x_fprintf(x_stdout, "PW\n");
 666                 return;
 667         }
 668
 669         if (strncmp(buf, "YR", 2) == 0) {
 670                 if (ntlmssp_state)
 671                         ntlmssp_end(&ntlmssp_state);
 672         } else if (strncmp(buf, "TT", 2) == 0) {
 673
 674         } else {
 675                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 676                 x_fprintf(x_stdout, "BH\n");
 677                 return;
 678         }
 679
 680         if (!ntlmssp_state) {
 681                 if (!NT_STATUS_IS_OK(nt_status = ntlm_auth_start_ntlmssp_client(&ntlmssp_state))) {
 682                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
 683                         return;
 684                 }
 685                 first = True;
 686         }
 687
 688         DEBUG(10, ("got NTLMSSP packet:\n"));
 689         dump_data(10, (const char *)request.data, request.length);
 690
 691         nt_status = ntlmssp_update(ntlmssp_state, request, &reply);
 692
 693         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 694                 char *reply_base64 = base64_encode_data_blob(reply);
 695                 if (first) {
 696                         x_fprintf(x_stdout, "YR %s\n", reply_base64);
 697                 } else {
 698                         x_fprintf(x_stdout, "KK %s\n", reply_base64);
 699                 }
 700                 SAFE_FREE(reply_base64);
 701                 data_blob_free(&reply);
 702                 DEBUG(10, ("NTLMSSP challenge\n"));
 703         } else if (NT_STATUS_IS_OK(nt_status)) {
 704                 x_fprintf(x_stdout, "AF\n");
 705                 DEBUG(10, ("NTLMSSP OK!\n"));
 706                 if (ntlmssp_state)
 707                         ntlmssp_end(&ntlmssp_state);
 708         } else {
 709                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
 710                 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
 711                 if (ntlmssp_state)
 712                         ntlmssp_end(&ntlmssp_state);
 713         }
 714
 715         data_blob_free(&request);
 716 }
 717
 718 static void manage_squid_basic_request(enum stdio_helper_mode stdio_helper_mode,
 719                                        char *buf, int length)
 720 {
 721         char *user, *pass;
 722         user=buf;
 723
 724         pass=memchr(buf,' ',length);
 725         if (!pass) {
 726                 DEBUG(2, ("Password not found. Denying access\n"));
 727                 x_fprintf(x_stdout, "ERR\n");
 728                 return;
 729         }
 730         *pass='\0';
 731         pass++;
 732
 733         if (stdio_helper_mode == SQUID_2_5_BASIC) {
 734                 rfc1738_unescape(user);
 735                 rfc1738_unescape(pass);
 736         }
 737
 738         if (check_plaintext_auth(user, pass, False)) {
 739                 x_fprintf(x_stdout, "OK\n");
 740         } else {
 741                 x_fprintf(x_stdout, "ERR\n");
 742         }
 743 }
 744
 745 static void offer_gss_spnego_mechs(void) {
 746
 747         DATA_BLOB token;
 748         SPNEGO_DATA spnego;
 749         ssize_t len;
 750         char *reply_base64;
 751
 752         pstring principal;
 753         pstring myname_lower;
 754
 755         ZERO_STRUCT(spnego);
 756
 757         pstrcpy(myname_lower, global_myname());
 758         strlower_m(myname_lower);
 759
 760         pstr_sprintf(principal, "%s$@%s", myname_lower, lp_realm());
 761
 762         /* Server negTokenInit (mech offerings) */
 763         spnego.type = SPNEGO_NEG_TOKEN_INIT;
 764         spnego.negTokenInit.mechTypes = smb_xmalloc(sizeof(char *) * 3);
 765 #ifdef HAVE_KRB5
 766         spnego.negTokenInit.mechTypes[0] = smb_xstrdup(OID_KERBEROS5_OLD);
 767         spnego.negTokenInit.mechTypes[1] = smb_xstrdup(OID_NTLMSSP);
 768         spnego.negTokenInit.mechTypes[2] = NULL;
 769 #else
 770         spnego.negTokenInit.mechTypes[0] = smb_xstrdup(OID_NTLMSSP);
 771         spnego.negTokenInit.mechTypes[1] = NULL;
 772 #endif
 773
 774
 775         spnego.negTokenInit.mechListMIC = data_blob(principal,
 776                                                     strlen(principal));
 777
 778         len = write_spnego_data(&token, &spnego);
 779         free_spnego_data(&spnego);
 780
 781         if (len == -1) {
 782                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
 783                 x_fprintf(x_stdout, "BH\n");
 784                 return;
 785         }
 786
 787         reply_base64 = base64_encode_data_blob(token);
 788         x_fprintf(x_stdout, "TT %s *\n", reply_base64);
 789
 790         SAFE_FREE(reply_base64);
 791         data_blob_free(&token);
 792         DEBUG(10, ("sent SPNEGO negTokenInit\n"));
 793         return;
 794 }
 795
 796 static void manage_gss_spnego_request(enum stdio_helper_mode stdio_helper_mode,
 797                                       char *buf, int length)
 798 {
 799         static NTLMSSP_STATE *ntlmssp_state = NULL;
 800         SPNEGO_DATA request, response;
 801         DATA_BLOB token;
 802         NTSTATUS status;
 803         ssize_t len;
 804
 805         char *user = NULL;
 806         char *domain = NULL;
 807
 808         const char *reply_code;
 809         char       *reply_base64;
 810         pstring     reply_argument;
 811
 812         if (strlen(buf) < 2) {
 813
 814                 if (ntlmssp_state != NULL) {
 815                         DEBUG(1, ("Request for initial SPNEGO request where "
 816                                   "we already have a state\n"));
 817                         x_fprintf(x_stdout, "BH\n");
 818                         return;
 819                 }
 820
 821                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 822                 x_fprintf(x_stdout, "BH\n");
 823                 return;
 824         }
 825
 826         if ( (strlen(buf) == 2) && (strcmp(buf, "YR") == 0) ) {
 827
 828                 /* Initial request, get the negTokenInit offering
 829                    mechanisms */
 830
 831                 offer_gss_spnego_mechs();
 832                 return;
 833         }
 834
 835         /* All subsequent requests are "KK" (Knock, Knock ;)) and have
 836            a blob. This might be negTokenInit or negTokenTarg */
 837
 838         if ( (strlen(buf) <= 3) || (strncmp(buf, "KK", 2) != 0) ) {
 839                 DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
 840                 x_fprintf(x_stdout, "BH\n");
 841                 return;
 842         }
 843
 844         token = base64_decode_data_blob(buf + 3);
 845         len = read_spnego_data(token, &request);
 846         data_blob_free(&token);
 847
 848         if (len == -1) {
 849                 DEBUG(1, ("GSS-SPNEGO query [%s] invalid", buf));
 850                 x_fprintf(x_stdout, "BH\n");
 851                 return;
 852         }
 853
 854         if (request.type == SPNEGO_NEG_TOKEN_INIT) {
 855
 856                 /* Second request from Client. This is where the
 857                    client offers its mechanism to use. */
 858
 859                 if ( (request.negTokenInit.mechTypes == NULL) ||
 860                      (request.negTokenInit.mechTypes[0] == NULL) ) {
 861                         DEBUG(1, ("Client did not offer any mechanism"));
 862                         x_fprintf(x_stdout, "BH\n");
 863                         return;
 864                 }
 865
 866                 if (strcmp(request.negTokenInit.mechTypes[0], OID_NTLMSSP) == 0) {
 867
 868                         if ( request.negTokenInit.mechToken.data == NULL ) {
 869                                 DEBUG(1, ("Client did not provide  NTLMSSP data\n"));
 870                                 x_fprintf(x_stdout, "BH\n");
 871                                 return;
 872                         }
 873
 874                         if ( ntlmssp_state != NULL ) {
 875                                 DEBUG(1, ("Client wants a new NTLMSSP challenge, but "
 876                                           "already got one\n"));
 877                                 x_fprintf(x_stdout, "BH\n");
 878                                 ntlmssp_end(&ntlmssp_state);
 879                                 return;
 880                         }
 881
 882                         if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
 883                                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
 884                                 return;
 885                         }
 886
 887                         DEBUG(10, ("got NTLMSSP packet:\n"));
 888                         dump_data(10, (const char *)request.negTokenInit.mechToken.data,
 889                                   request.negTokenInit.mechToken.length);
 890
 891                         response.type = SPNEGO_NEG_TOKEN_TARG;
 892                         response.negTokenTarg.supportedMech = strdup(OID_NTLMSSP);
 893                         response.negTokenTarg.mechListMIC = data_blob(NULL, 0);
 894
 895                         status = ntlmssp_update(ntlmssp_state,
 896                                                        request.negTokenInit.mechToken,
 897                                                        &response.negTokenTarg.responseToken);
 898                 }
 899
 900 #ifdef HAVE_KRB5
 901                 if (strcmp(request.negTokenInit.mechTypes[0], OID_KERBEROS5_OLD) == 0) {
 902
 903                         char *principal;
 904                         DATA_BLOB auth_data;
 905                         DATA_BLOB ap_rep;
 906                         DATA_BLOB session_key;
 907
 908                         if ( request.negTokenInit.mechToken.data == NULL ) {
 909                                 DEBUG(1, ("Client did not provide Kerberos data\n"));
 910                                 x_fprintf(x_stdout, "BH\n");
 911                                 return;
 912                         }
 913
 914                         response.type = SPNEGO_NEG_TOKEN_TARG;
 915                         response.negTokenTarg.supportedMech = strdup(OID_KERBEROS5_OLD);
 916                         response.negTokenTarg.mechListMIC = data_blob(NULL, 0);
 917                         response.negTokenTarg.responseToken = data_blob(NULL, 0);
 918
 919                         status = ads_verify_ticket(lp_realm(),
 920                                                    &request.negTokenInit.mechToken,
 921                                                    &principal, &auth_data, &ap_rep,
 922                                                    &session_key);
 923
 924                         /* Now in "principal" we have the name we are
 925                            authenticated as. */
 926
 927                         if (NT_STATUS_IS_OK(status)) {
 928
 929                                 domain = strchr(principal, '@');
 930
 931                                 if (domain == NULL) {
 932                                         DEBUG(1, ("Did not get a valid principal "
 933                                                   "from ads_verify_ticket\n"));
 934                                         x_fprintf(x_stdout, "BH\n");
 935                                         return;
 936                                 }
 937
 938                                 *domain++ = '\0';
 939                                 domain = strdup(domain);
 940                                 user = strdup(principal);
 941
 942                                 data_blob_free(&ap_rep);
 943                                 data_blob_free(&auth_data);
 944
 945                                 SAFE_FREE(principal);
 946                         }
 947                 }
 948 #endif
 949
 950         } else {
 951
 952                 if ( (request.negTokenTarg.supportedMech == NULL) ||
 953                      ( strcmp(request.negTokenTarg.supportedMech, OID_NTLMSSP) != 0 ) ) {
 954                         /* Kerberos should never send a negTokenTarg, OID_NTLMSSP
 955                            is the only one we support that sends this stuff */
 956                         DEBUG(1, ("Got a negTokenTarg for something non-NTLMSSP: %s\n",
 957                                   request.negTokenTarg.supportedMech));
 958                         x_fprintf(x_stdout, "BH\n");
 959                         return;
 960                 }
 961
 962                 if (request.negTokenTarg.responseToken.data == NULL) {
 963                         DEBUG(1, ("Got a negTokenTarg without a responseToken!\n"));
 964                         x_fprintf(x_stdout, "BH\n");
 965                         return;
 966                 }
 967
 968                 status = ntlmssp_update(ntlmssp_state,
 969                                                request.negTokenTarg.responseToken,
 970                                                &response.negTokenTarg.responseToken);
 971
 972                 response.type = SPNEGO_NEG_TOKEN_TARG;
 973                 response.negTokenTarg.supportedMech = strdup(OID_NTLMSSP);
 974                 response.negTokenTarg.mechListMIC = data_blob(NULL, 0);
 975
 976                 if (NT_STATUS_IS_OK(status)) {
 977                         user = strdup(ntlmssp_state->user);
 978                         domain = strdup(ntlmssp_state->domain);
 979                         ntlmssp_end(&ntlmssp_state);
 980                 }
 981         }
 982
 983         free_spnego_data(&request);
 984
 985         if (NT_STATUS_IS_OK(status)) {
 986                 response.negTokenTarg.negResult = SPNEGO_ACCEPT_COMPLETED;
 987                 reply_code = "AF";
 988                 pstr_sprintf(reply_argument, "%s\\%s", domain, user);
 989         } else if (NT_STATUS_EQUAL(status,
 990                                    NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 991                 response.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
 992                 reply_code = "TT";
 993                 pstr_sprintf(reply_argument, "*");
 994         } else {
 995                 response.negTokenTarg.negResult = SPNEGO_REJECT;
 996                 reply_code = "NA";
 997                 pstrcpy(reply_argument, nt_errstr(status));
 998         }
 999
1000         SAFE_FREE(user);
1001         SAFE_FREE(domain);
1002
1003         len = write_spnego_data(&token, &response);
1004         free_spnego_data(&response);
1005
1006         if (len == -1) {
1007                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1008                 x_fprintf(x_stdout, "BH\n");
1009                 return;
1010         }
1011
1012         reply_base64 = base64_encode_data_blob(token);
1013
1014         x_fprintf(x_stdout, "%s %s %s\n",
1015                   reply_code, reply_base64, reply_argument);
1016
1017         SAFE_FREE(reply_base64);
1018         data_blob_free(&token);
1019
1020         return;
1021 }
1022
1023 static NTLMSSP_STATE *client_ntlmssp_state = NULL;
1024
1025 static BOOL manage_client_ntlmssp_init(SPNEGO_DATA spnego)
1026 {
1027         NTSTATUS status;
1028         DATA_BLOB null_blob = data_blob(NULL, 0);
1029         DATA_BLOB to_server;
1030         char *to_server_base64;
1031         const char *my_mechs[] = {OID_NTLMSSP, NULL};
1032
1033         DEBUG(10, ("Got spnego negTokenInit with NTLMSSP\n"));
1034
1035         if (client_ntlmssp_state != NULL) {
1036                 DEBUG(1, ("Request for initial SPNEGO request where "
1037                           "we already have a state\n"));
1038                 return False;
1039         }
1040
1041         if (!client_ntlmssp_state) {
1042                 if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_client(&client_ntlmssp_state))) {
1043                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1044                         return False;
1045                 }
1046         }
1047
1048
1049         if (opt_password == NULL) {
1050
1051                 /* Request a password from the calling process.  After
1052                    sending it, the calling process should retry with
1053                    the negTokenInit. */
1054
1055                 DEBUG(10, ("Requesting password\n"));
1056                 x_fprintf(x_stdout, "PW\n");
1057                 return True;
1058         }
1059
1060         spnego.type = SPNEGO_NEG_TOKEN_INIT;
1061         spnego.negTokenInit.mechTypes = my_mechs;
1062         spnego.negTokenInit.reqFlags = 0;
1063         spnego.negTokenInit.mechListMIC = null_blob;
1064
1065         status = ntlmssp_update(client_ntlmssp_state, null_blob,
1066                                        &spnego.negTokenInit.mechToken);
1067
1068         if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1069                 DEBUG(1, ("Expected MORE_PROCESSING_REQUIRED, got: %s\n",
1070                           nt_errstr(status)));
1071                 ntlmssp_end(&client_ntlmssp_state);
1072                 return False;
1073         }
1074
1075         write_spnego_data(&to_server, &spnego);
1076         data_blob_free(&spnego.negTokenInit.mechToken);
1077
1078         to_server_base64 = base64_encode_data_blob(to_server);
1079         data_blob_free(&to_server);
1080         x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1081         SAFE_FREE(to_server_base64);
1082         return True;
1083 }
1084
1085 static void manage_client_ntlmssp_targ(SPNEGO_DATA spnego)
1086 {
1087         NTSTATUS status;
1088         DATA_BLOB null_blob = data_blob(NULL, 0);
1089         DATA_BLOB request;
1090         DATA_BLOB to_server;
1091         char *to_server_base64;
1092
1093         DEBUG(10, ("Got spnego negTokenTarg with NTLMSSP\n"));
1094
1095         if (client_ntlmssp_state == NULL) {
1096                 DEBUG(1, ("Got NTLMSSP tArg without a client state\n"));
1097                 x_fprintf(x_stdout, "BH\n");
1098                 ntlmssp_end(&client_ntlmssp_state);
1099                 return;
1100         }
1101
1102         if (spnego.negTokenTarg.negResult == SPNEGO_REJECT) {
1103                 x_fprintf(x_stdout, "NA\n");
1104                 ntlmssp_end(&client_ntlmssp_state);
1105                 return;
1106         }
1107
1108         if (spnego.negTokenTarg.negResult == SPNEGO_ACCEPT_COMPLETED) {
1109                 x_fprintf(x_stdout, "AF\n");
1110                 ntlmssp_end(&client_ntlmssp_state);
1111                 return;
1112         }
1113
1114         status = ntlmssp_update(client_ntlmssp_state,
1115                                        spnego.negTokenTarg.responseToken,
1116                                        &request);
1117
1118         if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1119                 DEBUG(1, ("Expected MORE_PROCESSING_REQUIRED from "
1120                           "ntlmssp_client_update, got: %s\n",
1121                           nt_errstr(status)));
1122                 x_fprintf(x_stdout, "BH\n");
1123                 data_blob_free(&request);
1124                 ntlmssp_end(&client_ntlmssp_state);
1125                 return;
1126         }
1127
1128         spnego.type = SPNEGO_NEG_TOKEN_TARG;
1129         spnego.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1130         spnego.negTokenTarg.supportedMech = OID_NTLMSSP;
1131         spnego.negTokenTarg.responseToken = request;
1132         spnego.negTokenTarg.mechListMIC = null_blob;
1133
1134         write_spnego_data(&to_server, &spnego);
1135         data_blob_free(&request);
1136
1137         to_server_base64 = base64_encode_data_blob(to_server);
1138         data_blob_free(&to_server);
1139         x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1140         SAFE_FREE(to_server_base64);
1141         return;
1142 }
1143
1144 #ifdef HAVE_KRB5
1145
1146 static BOOL manage_client_krb5_init(SPNEGO_DATA spnego)
1147 {
1148         char *principal;
1149         DATA_BLOB tkt, to_server;
1150         DATA_BLOB session_key_krb5;
1151         SPNEGO_DATA reply;
1152         char *reply_base64;
1153         int retval;
1154
1155         const char *my_mechs[] = {OID_KERBEROS5_OLD, NULL};
1156         ssize_t len;
1157
1158         if ( (spnego.negTokenInit.mechListMIC.data == NULL) ||
1159              (spnego.negTokenInit.mechListMIC.length == 0) ) {
1160                 DEBUG(1, ("Did not get a principal for krb5\n"));
1161                 return False;
1162         }
1163
1164         principal = malloc(spnego.negTokenInit.mechListMIC.length+1);
1165
1166         if (principal == NULL) {
1167                 DEBUG(1, ("Could not malloc principal\n"));
1168                 return False;
1169         }
1170
1171         memcpy(principal, spnego.negTokenInit.mechListMIC.data,
1172                spnego.negTokenInit.mechListMIC.length);
1173         principal[spnego.negTokenInit.mechListMIC.length] = '\0';
1174
1175         retval = cli_krb5_get_ticket(principal, 0, &tkt, &session_key_krb5);
1176
1177         if (retval) {
1178
1179                 pstring user;
1180
1181                 /* Let's try to first get the TGT, for that we need a
1182                    password. */
1183
1184                 if (opt_password == NULL) {
1185                         DEBUG(10, ("Requesting password\n"));
1186                         x_fprintf(x_stdout, "PW\n");
1187                         return True;
1188                 }
1189
1190                 pstr_sprintf(user, "%s@%s", opt_username, opt_domain);
1191
1192                 if ((retval = kerberos_kinit_password(user, opt_password,
1193                                                       0, NULL))) {
1194                         DEBUG(10, ("Requesting TGT failed: %s\n", error_message(retval)));
1195                         x_fprintf(x_stdout, "NA\n");
1196                         return True;
1197                 }
1198
1199                 retval = cli_krb5_get_ticket(principal, 0, &tkt, &session_key_krb5);
1200
1201                 if (retval) {
1202                         DEBUG(10, ("Kinit suceeded, but getting a ticket failed: %s\n", error_message(retval)));
1203                 }
1204         }
1205
1206         data_blob_free(&session_key_krb5);
1207
1208         ZERO_STRUCT(reply);
1209
1210         reply.type = SPNEGO_NEG_TOKEN_INIT;
1211         reply.negTokenInit.mechTypes = my_mechs;
1212         reply.negTokenInit.reqFlags = 0;
1213         reply.negTokenInit.mechToken = tkt;
1214         reply.negTokenInit.mechListMIC = data_blob(NULL, 0);
1215
1216         len = write_spnego_data(&to_server, &reply);
1217         data_blob_free(&tkt);
1218
1219         if (len == -1) {
1220                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1221                 return False;
1222         }
1223
1224         reply_base64 = base64_encode_data_blob(to_server);
1225         x_fprintf(x_stdout, "KK %s *\n", reply_base64);
1226
1227         SAFE_FREE(reply_base64);
1228         data_blob_free(&to_server);
1229         DEBUG(10, ("sent GSS-SPNEGO KERBEROS5 negTokenInit\n"));
1230         return True;
1231 }
1232
1233 static void manage_client_krb5_targ(SPNEGO_DATA spnego)
1234 {
1235         switch (spnego.negTokenTarg.negResult) {
1236         case SPNEGO_ACCEPT_INCOMPLETE:
1237                 DEBUG(1, ("Got a Kerberos negTokenTarg with ACCEPT_INCOMPLETE\n"));
1238                 x_fprintf(x_stdout, "BH\n");
1239                 break;
1240         case SPNEGO_ACCEPT_COMPLETED:
1241                 DEBUG(10, ("Accept completed\n"));
1242                 x_fprintf(x_stdout, "AF\n");
1243                 break;
1244         case SPNEGO_REJECT:
1245                 DEBUG(10, ("Rejected\n"));
1246                 x_fprintf(x_stdout, "NA\n");
1247                 break;
1248         default:
1249                 DEBUG(1, ("Got an invalid negTokenTarg\n"));
1250                 x_fprintf(x_stdout, "AF\n");
1251         }
1252 }
1253
1254 #endif
1255
1256 static void manage_gss_spnego_client_request(enum stdio_helper_mode stdio_helper_mode,
1257                                              char *buf, int length)
1258 {
1259         DATA_BLOB request;
1260         SPNEGO_DATA spnego;
1261         ssize_t len;
1262
1263         if (strlen(buf) <= 3) {
1264                 DEBUG(1, ("SPNEGO query [%s] too short\n", buf));
1265                 x_fprintf(x_stdout, "BH\n");
1266                 return;
1267         }
1268
1269         request = base64_decode_data_blob(buf+3);
1270
1271         if (strncmp(buf, "PW ", 3) == 0) {
1272
1273                 /* We asked for a password and obviously got it :-) */
1274
1275                 opt_password = strndup((const char *)request.data, request.length);
1276
1277                 if (opt_password == NULL) {
1278                         DEBUG(1, ("Out of memory\n"));
1279                         x_fprintf(x_stdout, "BH\n");
1280                         data_blob_free(&request);
1281                         return;
1282                 }
1283
1284                 x_fprintf(x_stdout, "OK\n");
1285                 data_blob_free(&request);
1286                 return;
1287         }
1288
1289         if ( (strncmp(buf, "TT ", 3) != 0) &&
1290              (strncmp(buf, "AF ", 3) != 0) &&
1291              (strncmp(buf, "NA ", 3) != 0) ) {
1292                 DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
1293                 x_fprintf(x_stdout, "BH\n");
1294                 data_blob_free(&request);
1295                 return;
1296         }
1297
1298         /* So we got a server challenge to generate a SPNEGO
1299            client-to-server request... */
1300
1301         len = read_spnego_data(request, &spnego);
1302         data_blob_free(&request);
1303
1304         if (len == -1) {
1305                 DEBUG(1, ("Could not read SPNEGO data for [%s]\n", buf));
1306                 x_fprintf(x_stdout, "BH\n");
1307                 return;
1308         }
1309
1310         if (spnego.type == SPNEGO_NEG_TOKEN_INIT) {
1311
1312                 /* The server offers a list of mechanisms */
1313
1314                 const char **mechType = spnego.negTokenInit.mechTypes;
1315
1316                 while (*mechType != NULL) {
1317
1318 #ifdef HAVE_KRB5
1319                         if ( (strcmp(*mechType, OID_KERBEROS5_OLD) == 0) ||
1320                              (strcmp(*mechType, OID_KERBEROS5) == 0) ) {
1321                                 if (manage_client_krb5_init(spnego))
1322                                         goto out;
1323                         }
1324 #endif
1325
1326                         if (strcmp(*mechType, OID_NTLMSSP) == 0) {
1327                                 if (manage_client_ntlmssp_init(spnego))
1328                                         goto out;
1329                         }
1330
1331                         mechType++;
1332                 }
1333
1334                 DEBUG(1, ("Server offered no compatible mechanism\n"));
1335                 x_fprintf(x_stdout, "BH\n");
1336                 return;
1337         }
1338
1339         if (spnego.type == SPNEGO_NEG_TOKEN_TARG) {
1340
1341                 if (spnego.negTokenTarg.supportedMech == NULL) {
1342                         /* On accept/reject Windows does not send the
1343                            mechanism anymore. Handle that here and
1344                            shut down the mechanisms. */
1345
1346                         switch (spnego.negTokenTarg.negResult) {
1347                         case SPNEGO_ACCEPT_COMPLETED:
1348                                 x_fprintf(x_stdout, "AF\n");
1349                                 break;
1350                         case SPNEGO_REJECT:
1351                                 x_fprintf(x_stdout, "NA\n");
1352                                 break;
1353                         default:
1354                                 DEBUG(1, ("Got a negTokenTarg with no mech and an "
1355                                           "unknown negResult: %d\n",
1356                                           spnego.negTokenTarg.negResult));
1357                                 x_fprintf(x_stdout, "BH\n");
1358                         }
1359
1360                         ntlmssp_end(&client_ntlmssp_state);
1361                         goto out;
1362                 }
1363
1364                 if (strcmp(spnego.negTokenTarg.supportedMech,
1365                            OID_NTLMSSP) == 0) {
1366                         manage_client_ntlmssp_targ(spnego);
1367                         goto out;
1368                 }
1369
1370 #if HAVE_KRB5
1371                 if (strcmp(spnego.negTokenTarg.supportedMech,
1372                            OID_KERBEROS5_OLD) == 0) {
1373                         manage_client_krb5_targ(spnego);
1374                         goto out;
1375                 }
1376 #endif
1377
1378         }
1379
1380         DEBUG(1, ("Got an SPNEGO token I could not handle [%s]!\n", buf));
1381         x_fprintf(x_stdout, "BH\n");
1382         return;
1383
1384  out:
1385         free_spnego_data(&spnego);
1386         return;
1387 }
1388
1389 static void manage_ntlm_server_1_request(enum stdio_helper_mode stdio_helper_mode,
1390                                          char *buf, int length)
1391 {
1392         char *request, *parameter;
1393         static DATA_BLOB challenge;
1394         static DATA_BLOB lm_response;
1395         static DATA_BLOB nt_response;
1396         static char *full_username;
1397         static char *username;
1398         static char *domain;
1399         static char *plaintext_password;
1400         static BOOL ntlm_server_1_user_session_key;
1401         static BOOL ntlm_server_1_lm_session_key;
1402
1403         if (strequal(buf, ".")) {
1404                 if (!full_username && !username) {
1405                         x_fprintf(x_stdout, "Error: No username supplied!\n");
1406                 } else if (plaintext_password) {
1407                         /* handle this request as plaintext */
1408                         if (!full_username) {
1409                                 if (asprintf(&full_username, "%s%c%s", domain, winbind_separator(), username) == -1) {
1410                                         x_fprintf(x_stdout, "Error: Out of memory in asprintf!\n.\n");
1411                                         return;
1412                                 }
1413                         }
1414                         if (check_plaintext_auth(full_username, plaintext_password, False)) {
1415                                 x_fprintf(x_stdout, "Authenticated: Yes\n");
1416                         } else {
1417                                 x_fprintf(x_stdout, "Authenticated: No\n");
1418                         }
1419                 } else if (!lm_response.data && !nt_response.data) {
1420                         x_fprintf(x_stdout, "Error: No password supplied!\n");
1421                 } else if (!challenge.data) {
1422                         x_fprintf(x_stdout, "Error: No lanman-challenge supplied!\n");
1423                 } else {
1424                         char *error_string = NULL;
1425                         uchar lm_key[8];
1426                         uchar user_session_key[16];
1427                         uint32 flags = 0;
1428
1429                         if (full_username && !username) {
1430                                 fstring fstr_user;
1431                                 fstring fstr_domain;
1432
1433                                 if (!parse_ntlm_auth_domain_user(full_username, fstr_user, fstr_domain)) {
1434                                         /* username might be 'tainted', don't print into our new-line deleimianted stream */
1435                                         x_fprintf(x_stdout, "Error: Could not parse into domain and username\n");
1436                                 }
1437                                 SAFE_FREE(username);
1438                                 SAFE_FREE(domain);
1439                                 username = smb_xstrdup(fstr_user);
1440                                 domain = smb_xstrdup(fstr_domain);
1441                         }
1442
1443                         if (!domain) {
1444                                 domain = smb_xstrdup(get_winbind_domain());
1445                         }
1446
1447                         if (ntlm_server_1_lm_session_key)
1448                                 flags |= WBFLAG_PAM_LMKEY;
1449
1450                         if (ntlm_server_1_user_session_key)
1451                                 flags |= WBFLAG_PAM_USER_SESSION_KEY;
1452
1453                         if (!NT_STATUS_IS_OK(
1454                                     contact_winbind_auth_crap(username,
1455                                                               domain,
1456                                                               global_myname(),
1457                                                               &challenge,
1458                                                               &lm_response,
1459                                                               &nt_response,
1460                                                               flags,
1461                                                               lm_key,
1462                                                               user_session_key,
1463                                                               &error_string,
1464                                                               NULL))) {
1465
1466                                 x_fprintf(x_stdout, "Authenticated: No\n");
1467                                 x_fprintf(x_stdout, "Authentication-Error: %s\n.\n", error_string);
1468                                 SAFE_FREE(error_string);
1469                         } else {
1470                                 static char zeros[16];
1471                                 char *hex_lm_key;
1472                                 char *hex_user_session_key;
1473
1474                                 x_fprintf(x_stdout, "Authenticated: Yes\n");
1475
1476                                 if (ntlm_server_1_lm_session_key
1477                                     && (memcmp(zeros, lm_key,
1478                                                sizeof(lm_key)) != 0)) {
1479                                         hex_encode((const unsigned char *)lm_key,
1480                                                    sizeof(lm_key),
1481                                                    &hex_lm_key);
1482                                         x_fprintf(x_stdout, "LANMAN-Session-Key: %s\n", hex_lm_key);
1483                                         SAFE_FREE(hex_lm_key);
1484                                 }
1485
1486                                 if (ntlm_server_1_user_session_key
1487                                     && (memcmp(zeros, user_session_key,
1488                                                sizeof(user_session_key)) != 0)) {
1489                                         hex_encode((const unsigned char *)user_session_key,
1490                                                    sizeof(user_session_key),
1491                                                    &hex_user_session_key);
1492                                         x_fprintf(x_stdout, "User-Session-Key: %s\n", hex_user_session_key);
1493                                         SAFE_FREE(hex_user_session_key);
1494                                 }
1495                         }
1496                 }
1497                 /* clear out the state */
1498                 challenge = data_blob(NULL, 0);
1499                 nt_response = data_blob(NULL, 0);
1500                 lm_response = data_blob(NULL, 0);
1501                 SAFE_FREE(full_username);
1502                 SAFE_FREE(username);
1503                 SAFE_FREE(domain);
1504                 SAFE_FREE(plaintext_password);
1505                 ntlm_server_1_user_session_key = False;
1506                 ntlm_server_1_lm_session_key = False;
1507                 x_fprintf(x_stdout, ".\n");
1508
1509                 return;
1510         }
1511
1512         request = buf;
1513
1514         /* Indicates a base64 encoded structure */
1515         parameter = strstr_m(request, ":: ");
1516         if (!parameter) {
1517                 parameter = strstr_m(request, ": ");
1518
1519                 if (!parameter) {
1520                         DEBUG(0, ("Parameter not found!\n"));
1521                         x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
1522                         return;
1523                 }
1524
1525                 parameter[0] ='\0';
1526                 parameter++;
1527                 parameter[0] ='\0';
1528                 parameter++;
1529
1530         } else {
1531                 parameter[0] ='\0';
1532                 parameter++;
1533                 parameter[0] ='\0';
1534                 parameter++;
1535                 parameter[0] ='\0';
1536                 parameter++;
1537
1538                 base64_decode_inplace(parameter);
1539         }
1540
1541         if (strequal(request, "LANMAN-Challenge")) {
1542                 challenge = strhex_to_data_blob(parameter);
1543                 if (challenge.length != 8) {
1544                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 8)\n.\n",
1545                                   parameter,
1546                                   (int)challenge.length);
1547                         challenge = data_blob(NULL, 0);
1548                 }
1549         } else if (strequal(request, "NT-Response")) {
1550                 nt_response = strhex_to_data_blob(parameter);
1551                 if (nt_response.length < 24) {
1552                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (only got %d bytes, needed at least 24)\n.\n",
1553                                   parameter,
1554                                   (int)opt_nt_response.length);
1555                         nt_response = data_blob(NULL, 0);
1556                 }
1557         } else if (strequal(request, "LANMAN-Response")) {
1558                 lm_response = strhex_to_data_blob(parameter);
1559                 if (lm_response.length != 24) {
1560                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 24)\n.\n",
1561                                   parameter,
1562                                   (int)lm_response.length);
1563                         lm_response = data_blob(NULL, 0);
1564                 }
1565         } else if (strequal(request, "Password")) {
1566                 plaintext_password = smb_xstrdup(parameter);
1567         } else if (strequal(request, "NT-Domain")) {
1568                 domain = smb_xstrdup(parameter);
1569         } else if (strequal(request, "Username")) {
1570                 username = smb_xstrdup(parameter);
1571         } else if (strequal(request, "Full-Username")) {
1572                 full_username = smb_xstrdup(parameter);
1573         } else if (strequal(request, "Request-User-Session-Key")) {
1574                 ntlm_server_1_user_session_key = strequal(parameter, "Yes");
1575         } else if (strequal(request, "Request-LanMan-Session-Key")) {
1576                 ntlm_server_1_lm_session_key = strequal(parameter, "Yes");
1577         } else {
1578                 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
1579         }
1580 }
1581
1582 static void manage_squid_request(enum stdio_helper_mode helper_mode, stdio_helper_function fn)
1583 {
1584         char buf[SQUID_BUFFER_SIZE+1];
1585         int length;
1586         char *c;
1587         static BOOL err;
1588
1589         /* this is not a typo - x_fgets doesn't work too well under squid */
1590         if (fgets(buf, sizeof(buf)-1, stdin) == NULL) {
1591                 DEBUG(1, ("fgets() failed! dying..... errno=%d (%s)\n", ferror(stdin),
1592                           strerror(ferror(stdin))));
1593                 exit(1);    /* BIIG buffer */
1594         }
1595
1596         c=memchr(buf,'\n',sizeof(buf)-1);
1597         if (c) {
1598                 *c = '\0';
1599                 length = c-buf;
1600         } else {
1601                 err = 1;
1602                 return;
1603         }
1604         if (err) {
1605                 DEBUG(2, ("Oversized message\n"));
1606                 x_fprintf(x_stderr, "ERR\n");
1607                 err = 0;
1608                 return;
1609         }
1610
1611         DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
1612
1613         if (buf[0] == '\0') {
1614                 DEBUG(2, ("Invalid Request\n"));
1615                 x_fprintf(x_stderr, "ERR\n");
1616                 return;
1617         }
1618
1619         fn(helper_mode, buf, length);
1620 }
1621
1622
1623 static void squid_stream(enum stdio_helper_mode stdio_mode, stdio_helper_function fn) {
1624         /* initialize FDescs */
1625         x_setbuf(x_stdout, NULL);
1626         x_setbuf(x_stderr, NULL);
1627         while(1) {
1628                 manage_squid_request(stdio_mode, fn);
1629         }
1630 }
1631
1632
1633 /* Authenticate a user with a challenge/response */
1634
1635 static BOOL check_auth_crap(void)
1636 {
1637         NTSTATUS nt_status;
1638         uint32 flags = 0;
1639         char lm_key[8];
1640         char user_session_key[16];
1641         char *hex_lm_key;
1642         char *hex_user_session_key;
1643         char *error_string;
1644         static uint8 zeros[16];
1645
1646         x_setbuf(x_stdout, NULL);
1647
1648         if (request_lm_key)
1649                 flags |= WBFLAG_PAM_LMKEY;
1650
1651         if (request_user_session_key)
1652                 flags |= WBFLAG_PAM_USER_SESSION_KEY;
1653
1654         flags |= WBFLAG_PAM_NT_STATUS_SQUASH;
1655
1656         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
1657                                               opt_workstation,
1658                                               &opt_challenge,
1659                                               &opt_lm_response,
1660                                               &opt_nt_response,
1661                                               flags,
1662                                               (unsigned char *)lm_key,
1663                                               (unsigned char *)user_session_key,
1664                                               &error_string, NULL);
1665
1666         if (!NT_STATUS_IS_OK(nt_status)) {
1667                 x_fprintf(x_stdout, "%s (0x%x)\n",
1668                           error_string,
1669                           NT_STATUS_V(nt_status));
1670                 SAFE_FREE(error_string);
1671                 return False;
1672         }
1673
1674         if (request_lm_key
1675             && (memcmp(zeros, lm_key,
1676                        sizeof(lm_key)) != 0)) {
1677                 hex_encode((const unsigned char *)lm_key,
1678                            sizeof(lm_key),
1679                            &hex_lm_key);
1680                 x_fprintf(x_stdout, "LM_KEY: %s\n", hex_lm_key);
1681                 SAFE_FREE(hex_lm_key);
1682         }
1683         if (request_user_session_key
1684             && (memcmp(zeros, user_session_key,
1685                        sizeof(user_session_key)) != 0)) {
1686                 hex_encode((const unsigned char *)user_session_key,
1687                            sizeof(user_session_key),
1688                            &hex_user_session_key);
1689                 x_fprintf(x_stdout, "NT_KEY: %s\n", hex_user_session_key);
1690                 SAFE_FREE(hex_user_session_key);
1691         }
1692
1693         return True;
1694 }
1695
1696 /* Main program */
1697
1698 enum {
1699         OPT_USERNAME = 1000,
1700         OPT_DOMAIN,
1701         OPT_WORKSTATION,
1702         OPT_CHALLENGE,
1703         OPT_RESPONSE,
1704         OPT_LM,
1705         OPT_NT,
1706         OPT_PASSWORD,
1707         OPT_LM_KEY,
1708         OPT_USER_SESSION_KEY,
1709         OPT_DIAGNOSTICS,
1710         OPT_REQUIRE_MEMBERSHIP
1711 };
1712
1713  int main(int argc, const char **argv)
1714 {
1715         int opt;
1716         static const char *helper_protocol;
1717         static int diagnostics;
1718
1719         static const char *hex_challenge;
1720         static const char *hex_lm_response;
1721         static const char *hex_nt_response;
1722
1723         poptContext pc;
1724
1725         /* NOTE: DO NOT change this interface without considering the implications!
1726            This is an external interface, which other programs will use to interact
1727            with this helper.
1728         */
1729
1730         /* We do not use single-letter command abbreviations, because they harm future
1731            interface stability. */
1732
1733         struct poptOption long_options[] = {
1734                 POPT_AUTOHELP
1735                 { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
1736                 { "username", 0, POPT_ARG_STRING, &opt_username, OPT_USERNAME, "username"},
1737                 { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
1738                 { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
1739                 { "challenge", 0, POPT_ARG_STRING, &hex_challenge, OPT_CHALLENGE, "challenge (HEX encoded)"},
1740                 { "lm-response", 0, POPT_ARG_STRING, &hex_lm_response, OPT_LM, "LM Response to the challenge (HEX encoded)"},
1741                 { "nt-response", 0, POPT_ARG_STRING, &hex_nt_response, OPT_NT, "NT or NTLMv2 Response to the challenge (HEX encoded)"},
1742                 { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
1743                 { "request-lm-key", 0, POPT_ARG_NONE, &request_lm_key, OPT_LM_KEY, "Retreive LM session key"},
1744                 { "request-nt-key", 0, POPT_ARG_NONE, &request_user_session_key, OPT_USER_SESSION_KEY, "Retreive User (NT) session key"},
1745                 { "diagnostics", 0, POPT_ARG_NONE, &diagnostics, OPT_DIAGNOSTICS, "Perform diagnostics on the authentictaion chain"},
1746                 { "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" },
1747                 POPT_COMMON_SAMBA
1748                 POPT_TABLEEND
1749         };
1750
1751         /* Samba client initialisation */
1752
1753         dbf = x_stderr;
1754
1755         /* Samba client initialisation */
1756
1757         if (!lp_load(dyn_CONFIGFILE, True, False, False)) {
1758                 d_fprintf(stderr, "wbinfo: error opening config file %s. Error was %s\n",
1759                         dyn_CONFIGFILE, strerror(errno));
1760                 exit(1);
1761         }
1762
1763         /* Parse options */
1764
1765         pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
1766
1767         /* Parse command line options */
1768
1769         if (argc == 1) {
1770                 poptPrintHelp(pc, stderr, 0);
1771                 return 1;
1772         }
1773
1774         pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
1775                             POPT_CONTEXT_KEEP_FIRST);
1776
1777         while((opt = poptGetNextOpt(pc)) != -1) {
1778                 switch (opt) {
1779                 case OPT_CHALLENGE:
1780                         opt_challenge = strhex_to_data_blob(hex_challenge);
1781                         if (opt_challenge.length != 8) {
1782                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
1783                                           hex_challenge,
1784                                           (int)opt_challenge.length);
1785                                 exit(1);
1786                         }
1787                         break;
1788                 case OPT_LM:
1789                         opt_lm_response = strhex_to_data_blob(hex_lm_response);
1790                         if (opt_lm_response.length != 24) {
1791                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
1792                                           hex_lm_response,
1793                                           (int)opt_lm_response.length);
1794                                 exit(1);
1795                         }
1796                         break;
1797
1798                 case OPT_NT:
1799                         opt_nt_response = strhex_to_data_blob(hex_nt_response);
1800                         if (opt_nt_response.length < 24) {
1801                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
1802                                           hex_nt_response,
1803                                           (int)opt_nt_response.length);
1804                                 exit(1);
1805                         }
1806                         break;
1807
1808                 case OPT_REQUIRE_MEMBERSHIP:
1809                         if (StrnCaseCmp("S-", require_membership_of, 2) == 0) {
1810                                 require_membership_sid = require_membership_of;
1811                         }
1812                         break;
1813                 }
1814         }
1815
1816         if (helper_protocol) {
1817                 int i;
1818                 for (i=0; i<NUM_HELPER_MODES; i++) {
1819                         if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
1820                                 squid_stream(stdio_helper_protocols[i].mode, stdio_helper_protocols[i].fn);
1821                                 exit(0);
1822                         }
1823                 }
1824                 x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol);
1825
1826                 for (i=0; i<NUM_HELPER_MODES; i++) {
1827                         x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name);
1828                 }
1829
1830                 exit(1);
1831         }
1832
1833         if (!opt_username) {
1834                 x_fprintf(x_stderr, "username must be specified!\n\n");
1835                 poptPrintHelp(pc, stderr, 0);
1836                 exit(1);
1837         }
1838
1839         if (opt_domain == NULL) {
1840                 opt_domain = get_winbind_domain();
1841         }
1842
1843         if (opt_workstation == NULL) {
1844                 opt_workstation = "";
1845         }
1846
1847         if (opt_challenge.length) {
1848                 if (!check_auth_crap()) {
1849                         exit(1);
1850                 }
1851                 exit(0);
1852         }
1853
1854         if (!opt_password) {
1855                 opt_password = getpass("password: ");
1856         }
1857
1858         if (diagnostics) {
1859                 if (!diagnose_ntlm_auth()) {
1860                         return 1;
1861                 }
1862         } else {
1863                 fstring user;
1864
1865                 fstr_sprintf(user, "%s%c%s", opt_domain, winbind_separator(), opt_username);
1866                 if (!check_plaintext_auth(user, opt_password, True)) {
1867                         return 1;
1868                 }
1869         }
1870
1871         /* Exit code */
1872
1873         poptFreeContext(pc);
1874         return 0;
1875 }