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    Copyright (C) Robert O'Callahan 2006 (added cached credential code).
  10    Copyright (C) Kai Blin <kai@samba.org> 2008
  11
  12    This program is free software; you can redistribute it and/or modify
  13    it under the terms of the GNU General Public License as published by
  14    the Free Software Foundation; either version 3 of the License, or
  15    (at your option) any later version.
  16
  17    This program is distributed in the hope that it will be useful,
  18    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20    GNU General Public License for more details.
  21
  22    You should have received a copy of the GNU General Public License
  23    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24 */
  25
  26 #include "includes.h"
  27 #include "utils/ntlm_auth.h"
  28 #include "../libcli/auth/libcli_auth.h"
  29
  30 #undef DBGC_CLASS
  31 #define DBGC_CLASS DBGC_WINBIND
  32
  33 #define INITIAL_BUFFER_SIZE 300
  34 #define MAX_BUFFER_SIZE 630000
  35
  36 enum stdio_helper_mode {
  37         SQUID_2_4_BASIC,
  38         SQUID_2_5_BASIC,
  39         SQUID_2_5_NTLMSSP,
  40         NTLMSSP_CLIENT_1,
  41         GSS_SPNEGO,
  42         GSS_SPNEGO_CLIENT,
  43         NTLM_SERVER_1,
  44         NTLM_CHANGE_PASSWORD_1,
  45         NUM_HELPER_MODES
  46 };
  47
  48 enum ntlm_auth_cli_state {
  49         CLIENT_INITIAL = 0,
  50         CLIENT_RESPONSE,
  51         CLIENT_FINISHED,
  52         CLIENT_ERROR
  53 };
  54
  55 enum ntlm_auth_svr_state {
  56         SERVER_INITIAL = 0,
  57         SERVER_CHALLENGE,
  58         SERVER_FINISHED,
  59         SERVER_ERROR
  60 };
  61
  62 struct ntlm_auth_state {
  63         TALLOC_CTX *mem_ctx;
  64         enum stdio_helper_mode helper_mode;
  65         enum ntlm_auth_cli_state cli_state;
  66         enum ntlm_auth_svr_state svr_state;
  67         struct ntlmssp_state *ntlmssp_state;
  68         uint32_t neg_flags;
  69         char *want_feature_list;
  70         bool have_session_key;
  71         DATA_BLOB session_key;
  72         DATA_BLOB initial_message;
  73 };
  74
  75 typedef void (*stdio_helper_function)(struct ntlm_auth_state *state, char *buf,
  76                                         int length);
  77
  78 static void manage_squid_basic_request (struct ntlm_auth_state *state,
  79                                         char *buf, int length);
  80
  81 static void manage_squid_ntlmssp_request (struct ntlm_auth_state *state,
  82                                         char *buf, int length);
  83
  84 static void manage_client_ntlmssp_request (struct ntlm_auth_state *state,
  85                                         char *buf, int length);
  86
  87 static void manage_gss_spnego_request (struct ntlm_auth_state *state,
  88                                         char *buf, int length);
  89
  90 static void manage_gss_spnego_client_request (struct ntlm_auth_state *state,
  91                                         char *buf, int length);
  92
  93 static void manage_ntlm_server_1_request (struct ntlm_auth_state *state,
  94                                         char *buf, int length);
  95
  96 static void manage_ntlm_change_password_1_request(struct ntlm_auth_state *state,
  97                                         char *buf, int length);
  98
  99 static const struct {
 100         enum stdio_helper_mode mode;
 101         const char *name;
 102         stdio_helper_function fn;
 103 } stdio_helper_protocols[] = {
 104         { SQUID_2_4_BASIC, "squid-2.4-basic", manage_squid_basic_request},
 105         { SQUID_2_5_BASIC, "squid-2.5-basic", manage_squid_basic_request},
 106         { SQUID_2_5_NTLMSSP, "squid-2.5-ntlmssp", manage_squid_ntlmssp_request},
 107         { NTLMSSP_CLIENT_1, "ntlmssp-client-1", manage_client_ntlmssp_request},
 108         { GSS_SPNEGO, "gss-spnego", manage_gss_spnego_request},
 109         { GSS_SPNEGO_CLIENT, "gss-spnego-client", manage_gss_spnego_client_request},
 110         { NTLM_SERVER_1, "ntlm-server-1", manage_ntlm_server_1_request},
 111         { NTLM_CHANGE_PASSWORD_1, "ntlm-change-password-1", manage_ntlm_change_password_1_request},
 112         { NUM_HELPER_MODES, NULL, NULL}
 113 };
 114
 115 const char *opt_username;
 116 const char *opt_domain;
 117 const char *opt_workstation;
 118 const char *opt_password;
 119 static DATA_BLOB opt_challenge;
 120 static DATA_BLOB opt_lm_response;
 121 static DATA_BLOB opt_nt_response;
 122 static int request_lm_key;
 123 static int request_user_session_key;
 124 static int use_cached_creds;
 125
 126 static const char *require_membership_of;
 127 static const char *require_membership_of_sid;
 128
 129 static char winbind_separator(void)
 130 {
 131         struct winbindd_response response;
 132         static bool got_sep;
 133         static char sep;
 134
 135         if (got_sep)
 136                 return sep;
 137
 138         ZERO_STRUCT(response);
 139
 140         /* Send off request */
 141
 142         if (winbindd_request_response(WINBINDD_INFO, NULL, &response) !=
 143             NSS_STATUS_SUCCESS) {
 144                 d_printf("could not obtain winbind separator!\n");
 145                 return *lp_winbind_separator();
 146         }
 147
 148         sep = response.data.info.winbind_separator;
 149         got_sep = True;
 150
 151         if (!sep) {
 152                 d_printf("winbind separator was NULL!\n");
 153                 return *lp_winbind_separator();
 154         }
 155
 156         return sep;
 157 }
 158
 159 const char *get_winbind_domain(void)
 160 {
 161         struct winbindd_response response;
 162
 163         static fstring winbind_domain;
 164         if (*winbind_domain) {
 165                 return winbind_domain;
 166         }
 167
 168         ZERO_STRUCT(response);
 169
 170         /* Send off request */
 171
 172         if (winbindd_request_response(WINBINDD_DOMAIN_NAME, NULL, &response) !=
 173             NSS_STATUS_SUCCESS) {
 174                 DEBUG(0, ("could not obtain winbind domain name!\n"));
 175                 return lp_workgroup();
 176         }
 177
 178         fstrcpy(winbind_domain, response.data.domain_name);
 179
 180         return winbind_domain;
 181
 182 }
 183
 184 const char *get_winbind_netbios_name(void)
 185 {
 186         struct winbindd_response response;
 187
 188         static fstring winbind_netbios_name;
 189
 190         if (*winbind_netbios_name) {
 191                 return winbind_netbios_name;
 192         }
 193
 194         ZERO_STRUCT(response);
 195
 196         /* Send off request */
 197
 198         if (winbindd_request_response(WINBINDD_NETBIOS_NAME, NULL, &response) !=
 199             NSS_STATUS_SUCCESS) {
 200                 DEBUG(0, ("could not obtain winbind netbios name!\n"));
 201                 return global_myname();
 202         }
 203
 204         fstrcpy(winbind_netbios_name, response.data.netbios_name);
 205
 206         return winbind_netbios_name;
 207
 208 }
 209
 210 DATA_BLOB get_challenge(void)
 211 {
 212         static DATA_BLOB chal;
 213         if (opt_challenge.length)
 214                 return opt_challenge;
 215
 216         chal = data_blob(NULL, 8);
 217
 218         generate_random_buffer(chal.data, chal.length);
 219         return chal;
 220 }
 221
 222 /* Copy of parse_domain_user from winbindd_util.c.  Parse a string of the
 223    form DOMAIN/user into a domain and a user */
 224
 225 static bool parse_ntlm_auth_domain_user(const char *domuser, fstring domain,
 226                                      fstring user)
 227 {
 228
 229         char *p = strchr(domuser,winbind_separator());
 230
 231         if (!p) {
 232                 return False;
 233         }
 234
 235         fstrcpy(user, p+1);
 236         fstrcpy(domain, domuser);
 237         domain[PTR_DIFF(p, domuser)] = 0;
 238         strupper_m(domain);
 239
 240         return True;
 241 }
 242
 243 static bool get_require_membership_sid(void) {
 244         struct winbindd_request request;
 245         struct winbindd_response response;
 246
 247         if (!require_membership_of) {
 248                 return True;
 249         }
 250
 251         if (require_membership_of_sid) {
 252                 return True;
 253         }
 254
 255         /* Otherwise, ask winbindd for the name->sid request */
 256
 257         ZERO_STRUCT(request);
 258         ZERO_STRUCT(response);
 259
 260         if (!parse_ntlm_auth_domain_user(require_membership_of,
 261                                          request.data.name.dom_name,
 262                                          request.data.name.name)) {
 263                 DEBUG(0, ("Could not parse %s into seperate domain/name parts!\n",
 264                           require_membership_of));
 265                 return False;
 266         }
 267
 268         if (winbindd_request_response(WINBINDD_LOOKUPNAME, &request, &response) !=
 269             NSS_STATUS_SUCCESS) {
 270                 DEBUG(0, ("Winbindd lookupname failed to resolve %s into a SID!\n",
 271                           require_membership_of));
 272                 return False;
 273         }
 274
 275         require_membership_of_sid = SMB_STRDUP(response.data.sid.sid);
 276
 277         if (require_membership_of_sid)
 278                 return True;
 279
 280         return False;
 281 }
 282 /* Authenticate a user with a plaintext password */
 283
 284 static bool check_plaintext_auth(const char *user, const char *pass,
 285                                  bool stdout_diagnostics)
 286 {
 287         struct winbindd_request request;
 288         struct winbindd_response response;
 289         NSS_STATUS result;
 290
 291         if (!get_require_membership_sid()) {
 292                 return False;
 293         }
 294
 295         /* Send off request */
 296
 297         ZERO_STRUCT(request);
 298         ZERO_STRUCT(response);
 299
 300         fstrcpy(request.data.auth.user, user);
 301         fstrcpy(request.data.auth.pass, pass);
 302         if (require_membership_of_sid) {
 303                 strlcpy(request.data.auth.require_membership_of_sid,
 304                         require_membership_of_sid,
 305                         sizeof(request.data.auth.require_membership_of_sid));
 306         }
 307
 308         result = winbindd_request_response(WINBINDD_PAM_AUTH, &request, &response);
 309
 310         /* Display response */
 311
 312         if (stdout_diagnostics) {
 313                 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
 314                         d_printf("Reading winbind reply failed! (0x01)\n");
 315                 }
 316
 317                 d_printf("%s: %s (0x%x)\n",
 318                          response.data.auth.nt_status_string,
 319                          response.data.auth.error_string,
 320                          response.data.auth.nt_status);
 321         } else {
 322                 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
 323                         DEBUG(1, ("Reading winbind reply failed! (0x01)\n"));
 324                 }
 325
 326                 DEBUG(3, ("%s: %s (0x%x)\n",
 327                           response.data.auth.nt_status_string,
 328                           response.data.auth.error_string,
 329                           response.data.auth.nt_status));
 330         }
 331
 332         return (result == NSS_STATUS_SUCCESS);
 333 }
 334
 335 /* authenticate a user with an encrypted username/password */
 336
 337 NTSTATUS contact_winbind_auth_crap(const char *username,
 338                                    const char *domain,
 339                                    const char *workstation,
 340                                    const DATA_BLOB *challenge,
 341                                    const DATA_BLOB *lm_response,
 342                                    const DATA_BLOB *nt_response,
 343                                    uint32 flags,
 344                                    uint8 lm_key[8],
 345                                    uint8 user_session_key[16],
 346                                    char **error_string,
 347                                    char **unix_name)
 348 {
 349         NTSTATUS nt_status;
 350         NSS_STATUS result;
 351         struct winbindd_request request;
 352         struct winbindd_response response;
 353
 354         if (!get_require_membership_sid()) {
 355                 return NT_STATUS_INVALID_PARAMETER;
 356         }
 357
 358         ZERO_STRUCT(request);
 359         ZERO_STRUCT(response);
 360
 361         request.flags = flags;
 362
 363         request.data.auth_crap.logon_parameters = MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT | MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT;
 364
 365         if (require_membership_of_sid)
 366                 fstrcpy(request.data.auth_crap.require_membership_of_sid, require_membership_of_sid);
 367
 368         fstrcpy(request.data.auth_crap.user, username);
 369         fstrcpy(request.data.auth_crap.domain, domain);
 370
 371         fstrcpy(request.data.auth_crap.workstation,
 372                 workstation);
 373
 374         memcpy(request.data.auth_crap.chal, challenge->data, MIN(challenge->length, 8));
 375
 376         if (lm_response && lm_response->length) {
 377                 memcpy(request.data.auth_crap.lm_resp,
 378                        lm_response->data,
 379                        MIN(lm_response->length, sizeof(request.data.auth_crap.lm_resp)));
 380                 request.data.auth_crap.lm_resp_len = lm_response->length;
 381         }
 382
 383         if (nt_response && nt_response->length) {
 384                 if (nt_response->length > sizeof(request.data.auth_crap.nt_resp)) {
 385                         request.flags = request.flags | WBFLAG_BIG_NTLMV2_BLOB;
 386                         request.extra_len = nt_response->length;
 387                         request.extra_data.data = SMB_MALLOC_ARRAY(char, request.extra_len);
 388                         if (request.extra_data.data == NULL) {
 389                                 return NT_STATUS_NO_MEMORY;
 390                         }
 391                         memcpy(request.extra_data.data, nt_response->data,
 392                                nt_response->length);
 393
 394                 } else {
 395                         memcpy(request.data.auth_crap.nt_resp,
 396                                nt_response->data, nt_response->length);
 397                 }
 398                 request.data.auth_crap.nt_resp_len = nt_response->length;
 399         }
 400
 401         result = winbindd_request_response(WINBINDD_PAM_AUTH_CRAP, &request, &response);
 402         SAFE_FREE(request.extra_data.data);
 403
 404         /* Display response */
 405
 406         if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
 407                 nt_status = NT_STATUS_UNSUCCESSFUL;
 408                 if (error_string)
 409                         *error_string = smb_xstrdup("Reading winbind reply failed!");
 410                 winbindd_free_response(&response);
 411                 return nt_status;
 412         }
 413
 414         nt_status = (NT_STATUS(response.data.auth.nt_status));
 415         if (!NT_STATUS_IS_OK(nt_status)) {
 416                 if (error_string)
 417                         *error_string = smb_xstrdup(response.data.auth.error_string);
 418                 winbindd_free_response(&response);
 419                 return nt_status;
 420         }
 421
 422         if ((flags & WBFLAG_PAM_LMKEY) && lm_key) {
 423                 memcpy(lm_key, response.data.auth.first_8_lm_hash,
 424                        sizeof(response.data.auth.first_8_lm_hash));
 425         }
 426         if ((flags & WBFLAG_PAM_USER_SESSION_KEY) && user_session_key) {
 427                 memcpy(user_session_key, response.data.auth.user_session_key,
 428                         sizeof(response.data.auth.user_session_key));
 429         }
 430
 431         if (flags & WBFLAG_PAM_UNIX_NAME) {
 432                 *unix_name = SMB_STRDUP(response.data.auth.unix_username);
 433                 if (!*unix_name) {
 434                         winbindd_free_response(&response);
 435                         return NT_STATUS_NO_MEMORY;
 436                 }
 437         }
 438
 439         winbindd_free_response(&response);
 440         return nt_status;
 441 }
 442
 443 /* contact server to change user password using auth crap */
 444 static NTSTATUS contact_winbind_change_pswd_auth_crap(const char *username,
 445                                                       const char *domain,
 446                                                       const DATA_BLOB new_nt_pswd,
 447                                                       const DATA_BLOB old_nt_hash_enc,
 448                                                       const DATA_BLOB new_lm_pswd,
 449                                                       const DATA_BLOB old_lm_hash_enc,
 450                                                       char  **error_string)
 451 {
 452         NTSTATUS nt_status;
 453         NSS_STATUS result;
 454         struct winbindd_request request;
 455         struct winbindd_response response;
 456
 457         if (!get_require_membership_sid())
 458         {
 459                 if(error_string)
 460                         *error_string = smb_xstrdup("Can't get membership sid.");
 461                 return NT_STATUS_INVALID_PARAMETER;
 462         }
 463
 464         ZERO_STRUCT(request);
 465         ZERO_STRUCT(response);
 466
 467         if(username != NULL)
 468                 fstrcpy(request.data.chng_pswd_auth_crap.user, username);
 469         if(domain != NULL)
 470                 fstrcpy(request.data.chng_pswd_auth_crap.domain,domain);
 471
 472         if(new_nt_pswd.length)
 473         {
 474                 memcpy(request.data.chng_pswd_auth_crap.new_nt_pswd, new_nt_pswd.data, sizeof(request.data.chng_pswd_auth_crap.new_nt_pswd));
 475                 request.data.chng_pswd_auth_crap.new_nt_pswd_len = new_nt_pswd.length;
 476         }
 477
 478         if(old_nt_hash_enc.length)
 479         {
 480                 memcpy(request.data.chng_pswd_auth_crap.old_nt_hash_enc, old_nt_hash_enc.data, sizeof(request.data.chng_pswd_auth_crap.old_nt_hash_enc));
 481                 request.data.chng_pswd_auth_crap.old_nt_hash_enc_len = old_nt_hash_enc.length;
 482         }
 483
 484         if(new_lm_pswd.length)
 485         {
 486                 memcpy(request.data.chng_pswd_auth_crap.new_lm_pswd, new_lm_pswd.data, sizeof(request.data.chng_pswd_auth_crap.new_lm_pswd));
 487                 request.data.chng_pswd_auth_crap.new_lm_pswd_len = new_lm_pswd.length;
 488         }
 489
 490         if(old_lm_hash_enc.length)
 491         {
 492                 memcpy(request.data.chng_pswd_auth_crap.old_lm_hash_enc, old_lm_hash_enc.data, sizeof(request.data.chng_pswd_auth_crap.old_lm_hash_enc));
 493                 request.data.chng_pswd_auth_crap.old_lm_hash_enc_len = old_lm_hash_enc.length;
 494         }
 495
 496         result = winbindd_request_response(WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, &request, &response);
 497
 498         /* Display response */
 499
 500         if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0))
 501         {
 502                 nt_status = NT_STATUS_UNSUCCESSFUL;
 503                 if (error_string)
 504                         *error_string = smb_xstrdup("Reading winbind reply failed!");
 505                 winbindd_free_response(&response);
 506                 return nt_status;
 507         }
 508
 509         nt_status = (NT_STATUS(response.data.auth.nt_status));
 510         if (!NT_STATUS_IS_OK(nt_status))
 511         {
 512                 if (error_string)
 513                         *error_string = smb_xstrdup(response.data.auth.error_string);
 514                 winbindd_free_response(&response);
 515                 return nt_status;
 516         }
 517
 518         winbindd_free_response(&response);
 519
 520     return nt_status;
 521 }
 522
 523 static NTSTATUS winbind_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
 524 {
 525         static const char zeros[16] = { 0, };
 526         NTSTATUS nt_status;
 527         char *error_string = NULL;
 528         uint8 lm_key[8];
 529         uint8 user_sess_key[16];
 530         char *unix_name = NULL;
 531
 532         nt_status = contact_winbind_auth_crap(ntlmssp_state->user, ntlmssp_state->domain,
 533                                               ntlmssp_state->workstation,
 534                                               &ntlmssp_state->chal,
 535                                               &ntlmssp_state->lm_resp,
 536                                               &ntlmssp_state->nt_resp,
 537                                               WBFLAG_PAM_LMKEY | WBFLAG_PAM_USER_SESSION_KEY | WBFLAG_PAM_UNIX_NAME,
 538                                               lm_key, user_sess_key,
 539                                               &error_string, &unix_name);
 540
 541         if (NT_STATUS_IS_OK(nt_status)) {
 542                 if (memcmp(lm_key, zeros, 8) != 0) {
 543                         *lm_session_key = data_blob(NULL, 16);
 544                         memcpy(lm_session_key->data, lm_key, 8);
 545                         memset(lm_session_key->data+8, '\0', 8);
 546                 }
 547
 548                 if (memcmp(user_sess_key, zeros, 16) != 0) {
 549                         *user_session_key = data_blob(user_sess_key, 16);
 550                 }
 551                 ntlmssp_state->auth_context = talloc_strdup(ntlmssp_state,
 552                                                             unix_name);
 553         } else {
 554                 DEBUG(NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED) ? 0 : 3,
 555                       ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
 556                        ntlmssp_state->domain, ntlmssp_state->user,
 557                        ntlmssp_state->workstation,
 558                        error_string ? error_string : "unknown error (NULL)"));
 559                 ntlmssp_state->auth_context = NULL;
 560         }
 561
 562         SAFE_FREE(error_string);
 563         SAFE_FREE(unix_name);
 564         return nt_status;
 565 }
 566
 567 static NTSTATUS local_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
 568 {
 569         NTSTATUS nt_status;
 570         uint8 lm_pw[16], nt_pw[16];
 571
 572         nt_lm_owf_gen (opt_password, nt_pw, lm_pw);
 573
 574         nt_status = ntlm_password_check(ntlmssp_state,
 575                                         &ntlmssp_state->chal,
 576                                         &ntlmssp_state->lm_resp,
 577                                         &ntlmssp_state->nt_resp,
 578                                         NULL, NULL,
 579                                         ntlmssp_state->user,
 580                                         ntlmssp_state->user,
 581                                         ntlmssp_state->domain,
 582                                         lm_pw, nt_pw, user_session_key, lm_session_key);
 583
 584         if (NT_STATUS_IS_OK(nt_status)) {
 585                 ntlmssp_state->auth_context = talloc_asprintf(ntlmssp_state,
 586                                                               "%s%c%s", ntlmssp_state->domain,
 587                                                               *lp_winbind_separator(),
 588                                                               ntlmssp_state->user);
 589         } else {
 590                 DEBUG(3, ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
 591                           ntlmssp_state->domain, ntlmssp_state->user, ntlmssp_state->workstation,
 592                           nt_errstr(nt_status)));
 593                 ntlmssp_state->auth_context = NULL;
 594         }
 595         return nt_status;
 596 }
 597
 598 static NTSTATUS ntlm_auth_start_ntlmssp_client(NTLMSSP_STATE **client_ntlmssp_state)
 599 {
 600         NTSTATUS status;
 601         if ( (opt_username == NULL) || (opt_domain == NULL) ) {
 602                 status = NT_STATUS_UNSUCCESSFUL;
 603                 DEBUG(1, ("Need username and domain for NTLMSSP\n"));
 604                 return NT_STATUS_INVALID_PARAMETER;
 605         }
 606
 607         status = ntlmssp_client_start(client_ntlmssp_state);
 608
 609         if (!NT_STATUS_IS_OK(status)) {
 610                 DEBUG(1, ("Could not start NTLMSSP client: %s\n",
 611                           nt_errstr(status)));
 612                 ntlmssp_end(client_ntlmssp_state);
 613                 return status;
 614         }
 615
 616         status = ntlmssp_set_username(*client_ntlmssp_state, opt_username);
 617
 618         if (!NT_STATUS_IS_OK(status)) {
 619                 DEBUG(1, ("Could not set username: %s\n",
 620                           nt_errstr(status)));
 621                 ntlmssp_end(client_ntlmssp_state);
 622                 return status;
 623         }
 624
 625         status = ntlmssp_set_domain(*client_ntlmssp_state, opt_domain);
 626
 627         if (!NT_STATUS_IS_OK(status)) {
 628                 DEBUG(1, ("Could not set domain: %s\n",
 629                           nt_errstr(status)));
 630                 ntlmssp_end(client_ntlmssp_state);
 631                 return status;
 632         }
 633
 634         if (opt_password) {
 635                 status = ntlmssp_set_password(*client_ntlmssp_state, opt_password);
 636
 637                 if (!NT_STATUS_IS_OK(status)) {
 638                         DEBUG(1, ("Could not set password: %s\n",
 639                                   nt_errstr(status)));
 640                         ntlmssp_end(client_ntlmssp_state);
 641                         return status;
 642                 }
 643         }
 644
 645         return NT_STATUS_OK;
 646 }
 647
 648 static NTSTATUS ntlm_auth_start_ntlmssp_server(NTLMSSP_STATE **ntlmssp_state)
 649 {
 650         NTSTATUS status = ntlmssp_server_start(ntlmssp_state);
 651
 652         if (!NT_STATUS_IS_OK(status)) {
 653                 DEBUG(1, ("Could not start NTLMSSP server: %s\n",
 654                           nt_errstr(status)));
 655                 return status;
 656         }
 657
 658         /* Have we been given a local password, or should we ask winbind? */
 659         if (opt_password) {
 660                 (*ntlmssp_state)->check_password = local_pw_check;
 661                 (*ntlmssp_state)->get_domain = lp_workgroup;
 662                 (*ntlmssp_state)->get_global_myname = global_myname;
 663         } else {
 664                 (*ntlmssp_state)->check_password = winbind_pw_check;
 665                 (*ntlmssp_state)->get_domain = get_winbind_domain;
 666                 (*ntlmssp_state)->get_global_myname = get_winbind_netbios_name;
 667         }
 668         return NT_STATUS_OK;
 669 }
 670
 671 /*******************************************************************
 672  Used by firefox to drive NTLM auth to IIS servers.
 673 *******************************************************************/
 674
 675 static NTSTATUS do_ccache_ntlm_auth(DATA_BLOB initial_msg, DATA_BLOB challenge_msg,
 676                                 DATA_BLOB *reply)
 677 {
 678         struct winbindd_request wb_request;
 679         struct winbindd_response wb_response;
 680         NSS_STATUS result;
 681
 682         /* get winbindd to do the ntlmssp step on our behalf */
 683         ZERO_STRUCT(wb_request);
 684         ZERO_STRUCT(wb_response);
 685
 686         fstr_sprintf(wb_request.data.ccache_ntlm_auth.user,
 687                 "%s%c%s", opt_domain, winbind_separator(), opt_username);
 688         wb_request.data.ccache_ntlm_auth.uid = geteuid();
 689         wb_request.data.ccache_ntlm_auth.initial_blob_len = initial_msg.length;
 690         wb_request.data.ccache_ntlm_auth.challenge_blob_len = challenge_msg.length;
 691         wb_request.extra_len = initial_msg.length + challenge_msg.length;
 692
 693         if (wb_request.extra_len > 0) {
 694                 wb_request.extra_data.data = SMB_MALLOC_ARRAY(char, wb_request.extra_len);
 695                 if (wb_request.extra_data.data == NULL) {
 696                         return NT_STATUS_NO_MEMORY;
 697                 }
 698
 699                 memcpy(wb_request.extra_data.data, initial_msg.data, initial_msg.length);
 700                 memcpy(wb_request.extra_data.data + initial_msg.length,
 701                         challenge_msg.data, challenge_msg.length);
 702         }
 703
 704         result = winbindd_request_response(WINBINDD_CCACHE_NTLMAUTH, &wb_request, &wb_response);
 705         SAFE_FREE(wb_request.extra_data.data);
 706
 707         if (result != NSS_STATUS_SUCCESS) {
 708                 winbindd_free_response(&wb_response);
 709                 return NT_STATUS_UNSUCCESSFUL;
 710         }
 711
 712         if (reply) {
 713                 *reply = data_blob(wb_response.extra_data.data,
 714                                 wb_response.data.ccache_ntlm_auth.auth_blob_len);
 715                 if (wb_response.data.ccache_ntlm_auth.auth_blob_len > 0 &&
 716                                 reply->data == NULL) {
 717                         winbindd_free_response(&wb_response);
 718                         return NT_STATUS_NO_MEMORY;
 719                 }
 720         }
 721
 722         winbindd_free_response(&wb_response);
 723         return NT_STATUS_MORE_PROCESSING_REQUIRED;
 724 }
 725
 726 static void manage_squid_ntlmssp_request(struct ntlm_auth_state *state,
 727                                                 char *buf, int length)
 728 {
 729         DATA_BLOB request, reply;
 730         NTSTATUS nt_status;
 731
 732         if (strlen(buf) < 2) {
 733                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 734                 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
 735                 return;
 736         }
 737
 738         if (strlen(buf) > 3) {
 739                 if(strncmp(buf, "SF ", 3) == 0){
 740                         DEBUG(10, ("Setting flags to negotioate\n"));
 741                         TALLOC_FREE(state->want_feature_list);
 742                         state->want_feature_list = talloc_strdup(state->mem_ctx,
 743                                         buf+3);
 744                         x_fprintf(x_stdout, "OK\n");
 745                         return;
 746                 }
 747                 request = base64_decode_data_blob(buf + 3);
 748         } else {
 749                 request = data_blob_null;
 750         }
 751
 752         if ((strncmp(buf, "PW ", 3) == 0)) {
 753                 /* The calling application wants us to use a local password
 754                  * (rather than winbindd) */
 755
 756                 opt_password = SMB_STRNDUP((const char *)request.data,
 757                                 request.length);
 758
 759                 if (opt_password == NULL) {
 760                         DEBUG(1, ("Out of memory\n"));
 761                         x_fprintf(x_stdout, "BH Out of memory\n");
 762                         data_blob_free(&request);
 763                         return;
 764                 }
 765
 766                 x_fprintf(x_stdout, "OK\n");
 767                 data_blob_free(&request);
 768                 return;
 769         }
 770
 771         if (strncmp(buf, "YR", 2) == 0) {
 772                 if (state->ntlmssp_state)
 773                         ntlmssp_end(&state->ntlmssp_state);
 774                 state->svr_state = SERVER_INITIAL;
 775         } else if (strncmp(buf, "KK", 2) == 0) {
 776                 /* No special preprocessing required */
 777         } else if (strncmp(buf, "GF", 2) == 0) {
 778                 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
 779
 780                 if (state->svr_state == SERVER_FINISHED) {
 781                         x_fprintf(x_stdout, "GF 0x%08x\n", state->neg_flags);
 782                 }
 783                 else {
 784                         x_fprintf(x_stdout, "BH\n");
 785                 }
 786                 data_blob_free(&request);
 787                 return;
 788         } else if (strncmp(buf, "GK", 2) == 0) {
 789                 DEBUG(10, ("Requested NTLMSSP session key\n"));
 790                 if(state->have_session_key) {
 791                         char *key64 = base64_encode_data_blob(state->mem_ctx,
 792                                         state->session_key);
 793                         x_fprintf(x_stdout, "GK %s\n", key64?key64:"<NULL>");
 794                         TALLOC_FREE(key64);
 795                 } else {
 796                         x_fprintf(x_stdout, "BH\n");
 797                 }
 798
 799                 data_blob_free(&request);
 800                 return;
 801         } else {
 802                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 803                 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
 804                 return;
 805         }
 806
 807         if (!state->ntlmssp_state) {
 808                 nt_status = ntlm_auth_start_ntlmssp_server(
 809                                 &state->ntlmssp_state);
 810                 if (!NT_STATUS_IS_OK(nt_status)) {
 811                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
 812                         return;
 813                 }
 814                 ntlmssp_want_feature_list(state->ntlmssp_state,
 815                                 state->want_feature_list);
 816         }
 817
 818         DEBUG(10, ("got NTLMSSP packet:\n"));
 819         dump_data(10, request.data, request.length);
 820
 821         nt_status = ntlmssp_update(state->ntlmssp_state, request, &reply);
 822
 823         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 824                 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
 825                                 reply);
 826                 x_fprintf(x_stdout, "TT %s\n", reply_base64);
 827                 TALLOC_FREE(reply_base64);
 828                 data_blob_free(&reply);
 829                 state->svr_state = SERVER_CHALLENGE;
 830                 DEBUG(10, ("NTLMSSP challenge\n"));
 831         } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
 832                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
 833                 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
 834
 835                 ntlmssp_end(&state->ntlmssp_state);
 836         } else if (!NT_STATUS_IS_OK(nt_status)) {
 837                 x_fprintf(x_stdout, "NA %s\n", nt_errstr(nt_status));
 838                 DEBUG(10, ("NTLMSSP %s\n", nt_errstr(nt_status)));
 839         } else {
 840                 x_fprintf(x_stdout, "AF %s\n",
 841                                 (char *)state->ntlmssp_state->auth_context);
 842                 DEBUG(10, ("NTLMSSP OK!\n"));
 843
 844                 if(state->have_session_key)
 845                         data_blob_free(&state->session_key);
 846                 state->session_key = data_blob(
 847                                 state->ntlmssp_state->session_key.data,
 848                                 state->ntlmssp_state->session_key.length);
 849                 state->neg_flags = state->ntlmssp_state->neg_flags;
 850                 state->have_session_key = true;
 851                 state->svr_state = SERVER_FINISHED;
 852         }
 853
 854         data_blob_free(&request);
 855 }
 856
 857 static void manage_client_ntlmssp_request(struct ntlm_auth_state *state,
 858                                                 char *buf, int length)
 859 {
 860         DATA_BLOB request, reply;
 861         NTSTATUS nt_status;
 862
 863         if (!opt_username || !*opt_username) {
 864                 x_fprintf(x_stderr, "username must be specified!\n\n");
 865                 exit(1);
 866         }
 867
 868         if (strlen(buf) < 2) {
 869                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 870                 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
 871                 return;
 872         }
 873
 874         if (strlen(buf) > 3) {
 875                 if(strncmp(buf, "SF ", 3) == 0) {
 876                         DEBUG(10, ("Looking for flags to negotiate\n"));
 877                         talloc_free(state->want_feature_list);
 878                         state->want_feature_list = talloc_strdup(state->mem_ctx,
 879                                         buf+3);
 880                         x_fprintf(x_stdout, "OK\n");
 881                         return;
 882                 }
 883                 request = base64_decode_data_blob(buf + 3);
 884         } else {
 885                 request = data_blob_null;
 886         }
 887
 888         if (strncmp(buf, "PW ", 3) == 0) {
 889                 /* We asked for a password and obviously got it :-) */
 890
 891                 opt_password = SMB_STRNDUP((const char *)request.data,
 892                                 request.length);
 893
 894                 if (opt_password == NULL) {
 895                         DEBUG(1, ("Out of memory\n"));
 896                         x_fprintf(x_stdout, "BH Out of memory\n");
 897                         data_blob_free(&request);
 898                         return;
 899                 }
 900
 901                 x_fprintf(x_stdout, "OK\n");
 902                 data_blob_free(&request);
 903                 return;
 904         }
 905
 906         if (!state->ntlmssp_state && use_cached_creds) {
 907                 /* check whether cached credentials are usable. */
 908                 DATA_BLOB empty_blob = data_blob_null;
 909
 910                 nt_status = do_ccache_ntlm_auth(empty_blob, empty_blob, NULL);
 911                 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 912                         /* failed to use cached creds */
 913                         use_cached_creds = False;
 914                 }
 915         }
 916
 917         if (opt_password == NULL && !use_cached_creds) {
 918                 /* Request a password from the calling process.  After
 919                    sending it, the calling process should retry asking for the
 920                    negotiate. */
 921
 922                 DEBUG(10, ("Requesting password\n"));
 923                 x_fprintf(x_stdout, "PW\n");
 924                 return;
 925         }
 926
 927         if (strncmp(buf, "YR", 2) == 0) {
 928                 if (state->ntlmssp_state)
 929                         ntlmssp_end(&state->ntlmssp_state);
 930                 state->cli_state = CLIENT_INITIAL;
 931         } else if (strncmp(buf, "TT", 2) == 0) {
 932                 /* No special preprocessing required */
 933         } else if (strncmp(buf, "GF", 2) == 0) {
 934                 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
 935
 936                 if(state->cli_state == CLIENT_FINISHED) {
 937                         x_fprintf(x_stdout, "GF 0x%08x\n", state->neg_flags);
 938                 }
 939                 else {
 940                         x_fprintf(x_stdout, "BH\n");
 941                 }
 942
 943                 data_blob_free(&request);
 944                 return;
 945         } else if (strncmp(buf, "GK", 2) == 0 ) {
 946                 DEBUG(10, ("Requested session key\n"));
 947
 948                 if(state->cli_state == CLIENT_FINISHED) {
 949                         char *key64 = base64_encode_data_blob(state->mem_ctx,
 950                                         state->session_key);
 951                         x_fprintf(x_stdout, "GK %s\n", key64?key64:"<NULL>");
 952                         TALLOC_FREE(key64);
 953                 }
 954                 else {
 955                         x_fprintf(x_stdout, "BH\n");
 956                 }
 957
 958                 data_blob_free(&request);
 959                 return;
 960         } else {
 961                 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
 962                 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
 963                 return;
 964         }
 965
 966         if (!state->ntlmssp_state) {
 967                 nt_status = ntlm_auth_start_ntlmssp_client(
 968                                 &state->ntlmssp_state);
 969                 if (!NT_STATUS_IS_OK(nt_status)) {
 970                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
 971                         return;
 972                 }
 973                 ntlmssp_want_feature_list(state->ntlmssp_state,
 974                                 state->want_feature_list);
 975                 state->initial_message = data_blob_null;
 976         }
 977
 978         DEBUG(10, ("got NTLMSSP packet:\n"));
 979         dump_data(10, request.data, request.length);
 980
 981         if (use_cached_creds && !opt_password &&
 982                         (state->cli_state == CLIENT_RESPONSE)) {
 983                 nt_status = do_ccache_ntlm_auth(state->initial_message, request,
 984                                 &reply);
 985         } else {
 986                 nt_status = ntlmssp_update(state->ntlmssp_state, request,
 987                                 &reply);
 988         }
 989
 990         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 991                 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
 992                                 reply);
 993                 if (state->cli_state == CLIENT_INITIAL) {
 994                         x_fprintf(x_stdout, "YR %s\n", reply_base64);
 995                         state->initial_message = reply;
 996                         state->cli_state = CLIENT_RESPONSE;
 997                 } else {
 998                         x_fprintf(x_stdout, "KK %s\n", reply_base64);
 999                         data_blob_free(&reply);
1000                 }
1001                 TALLOC_FREE(reply_base64);
1002                 DEBUG(10, ("NTLMSSP challenge\n"));
1003         } else if (NT_STATUS_IS_OK(nt_status)) {
1004                 char *reply_base64 = base64_encode_data_blob(talloc_tos(),
1005                                 reply);
1006                 x_fprintf(x_stdout, "AF %s\n", reply_base64);
1007                 TALLOC_FREE(reply_base64);
1008
1009                 if(state->have_session_key)
1010                         data_blob_free(&state->session_key);
1011
1012                 state->session_key = data_blob(
1013                                 state->ntlmssp_state->session_key.data,
1014                                 state->ntlmssp_state->session_key.length);
1015                 state->neg_flags = state->ntlmssp_state->neg_flags;
1016                 state->have_session_key = true;
1017
1018                 DEBUG(10, ("NTLMSSP OK!\n"));
1019                 state->cli_state = CLIENT_FINISHED;
1020                 if (state->ntlmssp_state)
1021                         ntlmssp_end(&state->ntlmssp_state);
1022         } else {
1023                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
1024                 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
1025                 state->cli_state = CLIENT_ERROR;
1026                 if (state->ntlmssp_state)
1027                         ntlmssp_end(&state->ntlmssp_state);
1028         }
1029
1030         data_blob_free(&request);
1031 }
1032
1033 static void manage_squid_basic_request(struct ntlm_auth_state *state,
1034                                         char *buf, int length)
1035 {
1036         char *user, *pass;
1037         user=buf;
1038
1039         pass=(char *)memchr(buf,' ',length);
1040         if (!pass) {
1041                 DEBUG(2, ("Password not found. Denying access\n"));
1042                 x_fprintf(x_stdout, "ERR\n");
1043                 return;
1044         }
1045         *pass='\0';
1046         pass++;
1047
1048         if (state->helper_mode == SQUID_2_5_BASIC) {
1049                 rfc1738_unescape(user);
1050                 rfc1738_unescape(pass);
1051         }
1052
1053         if (check_plaintext_auth(user, pass, False)) {
1054                 x_fprintf(x_stdout, "OK\n");
1055         } else {
1056                 x_fprintf(x_stdout, "ERR\n");
1057         }
1058 }
1059
1060 static void offer_gss_spnego_mechs(void) {
1061
1062         DATA_BLOB token;
1063         SPNEGO_DATA spnego;
1064         ssize_t len;
1065         char *reply_base64;
1066         TALLOC_CTX *ctx = talloc_tos();
1067         char *principal;
1068         char *myname_lower;
1069
1070         ZERO_STRUCT(spnego);
1071
1072         myname_lower = talloc_strdup(ctx, global_myname());
1073         if (!myname_lower) {
1074                 return;
1075         }
1076         strlower_m(myname_lower);
1077
1078         principal = talloc_asprintf(ctx, "%s$@%s", myname_lower, lp_realm());
1079         if (!principal) {
1080                 return;
1081         }
1082
1083         /* Server negTokenInit (mech offerings) */
1084         spnego.type = SPNEGO_NEG_TOKEN_INIT;
1085         spnego.negTokenInit.mechTypes = SMB_XMALLOC_ARRAY(const char *, 2);
1086 #ifdef HAVE_KRB5
1087         spnego.negTokenInit.mechTypes[0] = smb_xstrdup(OID_KERBEROS5_OLD);
1088         spnego.negTokenInit.mechTypes[1] = smb_xstrdup(OID_NTLMSSP);
1089         spnego.negTokenInit.mechTypes[2] = NULL;
1090 #else
1091         spnego.negTokenInit.mechTypes[0] = smb_xstrdup(OID_NTLMSSP);
1092         spnego.negTokenInit.mechTypes[1] = NULL;
1093 #endif
1094
1095
1096         spnego.negTokenInit.mechListMIC = data_blob(principal,
1097                                                     strlen(principal));
1098
1099         len = write_spnego_data(&token, &spnego);
1100         free_spnego_data(&spnego);
1101
1102         if (len == -1) {
1103                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1104                 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1105                 return;
1106         }
1107
1108         reply_base64 = base64_encode_data_blob(talloc_tos(), token);
1109         x_fprintf(x_stdout, "TT %s *\n", reply_base64);
1110
1111         TALLOC_FREE(reply_base64);
1112         data_blob_free(&token);
1113         DEBUG(10, ("sent SPNEGO negTokenInit\n"));
1114         return;
1115 }
1116
1117 static void manage_gss_spnego_request(struct ntlm_auth_state *state,
1118                                         char *buf, int length)
1119 {
1120         static NTLMSSP_STATE *ntlmssp_state = NULL;
1121         SPNEGO_DATA request, response;
1122         DATA_BLOB token;
1123         NTSTATUS status;
1124         ssize_t len;
1125         TALLOC_CTX *ctx = talloc_tos();
1126
1127         char *user = NULL;
1128         char *domain = NULL;
1129
1130         const char *reply_code;
1131         char       *reply_base64;
1132         char *reply_argument = NULL;
1133
1134         if (strlen(buf) < 2) {
1135                 DEBUG(1, ("SPENGO query [%s] invalid", buf));
1136                 x_fprintf(x_stdout, "BH SPENGO query invalid\n");
1137                 return;
1138         }
1139
1140         if (strncmp(buf, "YR", 2) == 0) {
1141                 if (ntlmssp_state)
1142                         ntlmssp_end(&ntlmssp_state);
1143         } else if (strncmp(buf, "KK", 2) == 0) {
1144                 ;
1145         } else {
1146                 DEBUG(1, ("SPENGO query [%s] invalid", buf));
1147                 x_fprintf(x_stdout, "BH SPENGO query invalid\n");
1148                 return;
1149         }
1150
1151         if ( (strlen(buf) == 2)) {
1152
1153                 /* no client data, get the negTokenInit offering
1154                    mechanisms */
1155
1156                 offer_gss_spnego_mechs();
1157                 return;
1158         }
1159
1160         /* All subsequent requests have a blob. This might be negTokenInit or negTokenTarg */
1161
1162         if (strlen(buf) <= 3) {
1163                 DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
1164                 x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
1165                 return;
1166         }
1167
1168         token = base64_decode_data_blob(buf + 3);
1169         len = read_spnego_data(token, &request);
1170         data_blob_free(&token);
1171
1172         if (len == -1) {
1173                 DEBUG(1, ("GSS-SPNEGO query [%s] invalid", buf));
1174                 x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
1175                 return;
1176         }
1177
1178         if (request.type == SPNEGO_NEG_TOKEN_INIT) {
1179
1180                 /* Second request from Client. This is where the
1181                    client offers its mechanism to use. */
1182
1183                 if ( (request.negTokenInit.mechTypes == NULL) ||
1184                      (request.negTokenInit.mechTypes[0] == NULL) ) {
1185                         DEBUG(1, ("Client did not offer any mechanism"));
1186                         x_fprintf(x_stdout, "BH Client did not offer any "
1187                                             "mechanism\n");
1188                         return;
1189                 }
1190
1191                 status = NT_STATUS_UNSUCCESSFUL;
1192                 if (strcmp(request.negTokenInit.mechTypes[0], OID_NTLMSSP) == 0) {
1193
1194                         if ( request.negTokenInit.mechToken.data == NULL ) {
1195                                 DEBUG(1, ("Client did not provide NTLMSSP data\n"));
1196                                 x_fprintf(x_stdout, "BH Client did not provide "
1197                                                     "NTLMSSP data\n");
1198                                 return;
1199                         }
1200
1201                         if ( ntlmssp_state != NULL ) {
1202                                 DEBUG(1, ("Client wants a new NTLMSSP challenge, but "
1203                                           "already got one\n"));
1204                                 x_fprintf(x_stdout, "BH Client wants a new "
1205                                                     "NTLMSSP challenge, but "
1206                                                     "already got one\n");
1207                                 ntlmssp_end(&ntlmssp_state);
1208                                 return;
1209                         }
1210
1211                         if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
1212                                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1213                                 return;
1214                         }
1215
1216                         DEBUG(10, ("got NTLMSSP packet:\n"));
1217                         dump_data(10, request.negTokenInit.mechToken.data,
1218                                   request.negTokenInit.mechToken.length);
1219
1220                         response.type = SPNEGO_NEG_TOKEN_TARG;
1221                         response.negTokenTarg.supportedMech = SMB_STRDUP(OID_NTLMSSP);
1222                         response.negTokenTarg.mechListMIC = data_blob_null;
1223
1224                         status = ntlmssp_update(ntlmssp_state,
1225                                                        request.negTokenInit.mechToken,
1226                                                        &response.negTokenTarg.responseToken);
1227                 }
1228
1229 #ifdef HAVE_KRB5
1230                 if (strcmp(request.negTokenInit.mechTypes[0], OID_KERBEROS5_OLD) == 0) {
1231
1232                         TALLOC_CTX *mem_ctx = talloc_init("manage_gss_spnego_request");
1233                         char *principal;
1234                         DATA_BLOB ap_rep;
1235                         DATA_BLOB session_key;
1236                         struct PAC_DATA *pac_data = NULL;
1237
1238                         if ( request.negTokenInit.mechToken.data == NULL ) {
1239                                 DEBUG(1, ("Client did not provide Kerberos data\n"));
1240                                 x_fprintf(x_stdout, "BH Client did not provide "
1241                                                     "Kerberos data\n");
1242                                 return;
1243                         }
1244
1245                         response.type = SPNEGO_NEG_TOKEN_TARG;
1246                         response.negTokenTarg.supportedMech = SMB_STRDUP(OID_KERBEROS5_OLD);
1247                         response.negTokenTarg.mechListMIC = data_blob_null;
1248                         response.negTokenTarg.responseToken = data_blob_null;
1249
1250                         status = ads_verify_ticket(mem_ctx, lp_realm(), 0,
1251                                                    &request.negTokenInit.mechToken,
1252                                                    &principal, &pac_data, &ap_rep,
1253                                                    &session_key, True);
1254
1255                         /* Now in "principal" we have the name we are
1256                            authenticated as. */
1257
1258                         if (NT_STATUS_IS_OK(status)) {
1259
1260                                 domain = strchr_m(principal, '@');
1261
1262                                 if (domain == NULL) {
1263                                         DEBUG(1, ("Did not get a valid principal "
1264                                                   "from ads_verify_ticket\n"));
1265                                         x_fprintf(x_stdout, "BH Did not get a "
1266                                                   "valid principal from "
1267                                                   "ads_verify_ticket\n");
1268                                         return;
1269                                 }
1270
1271                                 *domain++ = '\0';
1272                                 domain = SMB_STRDUP(domain);
1273                                 user = SMB_STRDUP(principal);
1274
1275                                 data_blob_free(&ap_rep);
1276                         }
1277
1278                         TALLOC_FREE(mem_ctx);
1279                 }
1280 #endif
1281
1282         } else {
1283
1284                 if ( (request.negTokenTarg.supportedMech == NULL) ||
1285                      ( strcmp(request.negTokenTarg.supportedMech, OID_NTLMSSP) != 0 ) ) {
1286                         /* Kerberos should never send a negTokenTarg, OID_NTLMSSP
1287                            is the only one we support that sends this stuff */
1288                         DEBUG(1, ("Got a negTokenTarg for something non-NTLMSSP: %s\n",
1289                                   request.negTokenTarg.supportedMech));
1290                         x_fprintf(x_stdout, "BH Got a negTokenTarg for "
1291                                             "something non-NTLMSSP\n");
1292                         return;
1293                 }
1294
1295                 if (request.negTokenTarg.responseToken.data == NULL) {
1296                         DEBUG(1, ("Got a negTokenTarg without a responseToken!\n"));
1297                         x_fprintf(x_stdout, "BH Got a negTokenTarg without a "
1298                                             "responseToken!\n");
1299                         return;
1300                 }
1301
1302                 status = ntlmssp_update(ntlmssp_state,
1303                                                request.negTokenTarg.responseToken,
1304                                                &response.negTokenTarg.responseToken);
1305
1306                 response.type = SPNEGO_NEG_TOKEN_TARG;
1307                 response.negTokenTarg.supportedMech = SMB_STRDUP(OID_NTLMSSP);
1308                 response.negTokenTarg.mechListMIC = data_blob_null;
1309
1310                 if (NT_STATUS_IS_OK(status)) {
1311                         user = SMB_STRDUP(ntlmssp_state->user);
1312                         domain = SMB_STRDUP(ntlmssp_state->domain);
1313                         ntlmssp_end(&ntlmssp_state);
1314                 }
1315         }
1316
1317         free_spnego_data(&request);
1318
1319         if (NT_STATUS_IS_OK(status)) {
1320                 response.negTokenTarg.negResult = SPNEGO_ACCEPT_COMPLETED;
1321                 reply_code = "AF";
1322                 reply_argument = talloc_asprintf(ctx, "%s\\%s", domain, user);
1323         } else if (NT_STATUS_EQUAL(status,
1324                                    NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1325                 response.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1326                 reply_code = "TT";
1327                 reply_argument = talloc_strdup(ctx, "*");
1328         } else {
1329                 response.negTokenTarg.negResult = SPNEGO_REJECT;
1330                 reply_code = "NA";
1331                 reply_argument = talloc_strdup(ctx, nt_errstr(status));
1332         }
1333
1334         if (!reply_argument) {
1335                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1336                 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1337                 return;
1338         }
1339
1340         SAFE_FREE(user);
1341         SAFE_FREE(domain);
1342
1343         len = write_spnego_data(&token, &response);
1344         free_spnego_data(&response);
1345
1346         if (len == -1) {
1347                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1348                 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1349                 return;
1350         }
1351
1352         reply_base64 = base64_encode_data_blob(talloc_tos(), token);
1353
1354         x_fprintf(x_stdout, "%s %s %s\n",
1355                   reply_code, reply_base64, reply_argument);
1356
1357         TALLOC_FREE(reply_base64);
1358         data_blob_free(&token);
1359
1360         return;
1361 }
1362
1363 static NTLMSSP_STATE *client_ntlmssp_state = NULL;
1364
1365 static bool manage_client_ntlmssp_init(SPNEGO_DATA spnego)
1366 {
1367         NTSTATUS status;
1368         DATA_BLOB null_blob = data_blob_null;
1369         DATA_BLOB to_server;
1370         char *to_server_base64;
1371         const char *my_mechs[] = {OID_NTLMSSP, NULL};
1372
1373         DEBUG(10, ("Got spnego negTokenInit with NTLMSSP\n"));
1374
1375         if (client_ntlmssp_state != NULL) {
1376                 DEBUG(1, ("Request for initial SPNEGO request where "
1377                           "we already have a state\n"));
1378                 return False;
1379         }
1380
1381         if (!client_ntlmssp_state) {
1382                 if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_client(&client_ntlmssp_state))) {
1383                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1384                         return False;
1385                 }
1386         }
1387
1388
1389         if (opt_password == NULL) {
1390
1391                 /* Request a password from the calling process.  After
1392                    sending it, the calling process should retry with
1393                    the negTokenInit. */
1394
1395                 DEBUG(10, ("Requesting password\n"));
1396                 x_fprintf(x_stdout, "PW\n");
1397                 return True;
1398         }
1399
1400         spnego.type = SPNEGO_NEG_TOKEN_INIT;
1401         spnego.negTokenInit.mechTypes = my_mechs;
1402         spnego.negTokenInit.reqFlags = 0;
1403         spnego.negTokenInit.mechListMIC = null_blob;
1404
1405         status = ntlmssp_update(client_ntlmssp_state, null_blob,
1406                                        &spnego.negTokenInit.mechToken);
1407
1408         if ( !(NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) ||
1409                         NT_STATUS_IS_OK(status)) ) {
1410                 DEBUG(1, ("Expected OK or MORE_PROCESSING_REQUIRED, got: %s\n",
1411                           nt_errstr(status)));
1412                 ntlmssp_end(&client_ntlmssp_state);
1413                 return False;
1414         }
1415
1416         write_spnego_data(&to_server, &spnego);
1417         data_blob_free(&spnego.negTokenInit.mechToken);
1418
1419         to_server_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1420         data_blob_free(&to_server);
1421         x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1422         TALLOC_FREE(to_server_base64);
1423         return True;
1424 }
1425
1426 static void manage_client_ntlmssp_targ(SPNEGO_DATA spnego)
1427 {
1428         NTSTATUS status;
1429         DATA_BLOB null_blob = data_blob_null;
1430         DATA_BLOB request;
1431         DATA_BLOB to_server;
1432         char *to_server_base64;
1433
1434         DEBUG(10, ("Got spnego negTokenTarg with NTLMSSP\n"));
1435
1436         if (client_ntlmssp_state == NULL) {
1437                 DEBUG(1, ("Got NTLMSSP tArg without a client state\n"));
1438                 x_fprintf(x_stdout, "BH Got NTLMSSP tArg without a client state\n");
1439                 return;
1440         }
1441
1442         if (spnego.negTokenTarg.negResult == SPNEGO_REJECT) {
1443                 x_fprintf(x_stdout, "NA\n");
1444                 ntlmssp_end(&client_ntlmssp_state);
1445                 return;
1446         }
1447
1448         if (spnego.negTokenTarg.negResult == SPNEGO_ACCEPT_COMPLETED) {
1449                 x_fprintf(x_stdout, "AF\n");
1450                 ntlmssp_end(&client_ntlmssp_state);
1451                 return;
1452         }
1453
1454         status = ntlmssp_update(client_ntlmssp_state,
1455                                        spnego.negTokenTarg.responseToken,
1456                                        &request);
1457
1458         if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1459                 DEBUG(1, ("Expected MORE_PROCESSING_REQUIRED from "
1460                           "ntlmssp_client_update, got: %s\n",
1461                           nt_errstr(status)));
1462                 x_fprintf(x_stdout, "BH Expected MORE_PROCESSING_REQUIRED from "
1463                                     "ntlmssp_client_update\n");
1464                 data_blob_free(&request);
1465                 ntlmssp_end(&client_ntlmssp_state);
1466                 return;
1467         }
1468
1469         spnego.type = SPNEGO_NEG_TOKEN_TARG;
1470         spnego.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1471         spnego.negTokenTarg.supportedMech = (char *)OID_NTLMSSP;
1472         spnego.negTokenTarg.responseToken = request;
1473         spnego.negTokenTarg.mechListMIC = null_blob;
1474
1475         write_spnego_data(&to_server, &spnego);
1476         data_blob_free(&request);
1477
1478         to_server_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1479         data_blob_free(&to_server);
1480         x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1481         TALLOC_FREE(to_server_base64);
1482         return;
1483 }
1484
1485 #ifdef HAVE_KRB5
1486
1487 static bool manage_client_krb5_init(SPNEGO_DATA spnego)
1488 {
1489         char *principal;
1490         DATA_BLOB tkt, to_server;
1491         DATA_BLOB session_key_krb5 = data_blob_null;
1492         SPNEGO_DATA reply;
1493         char *reply_base64;
1494         int retval;
1495
1496         const char *my_mechs[] = {OID_KERBEROS5_OLD, NULL};
1497         ssize_t len;
1498
1499         if ( (spnego.negTokenInit.mechListMIC.data == NULL) ||
1500              (spnego.negTokenInit.mechListMIC.length == 0) ) {
1501                 DEBUG(1, ("Did not get a principal for krb5\n"));
1502                 return False;
1503         }
1504
1505         principal = (char *)SMB_MALLOC(
1506                 spnego.negTokenInit.mechListMIC.length+1);
1507
1508         if (principal == NULL) {
1509                 DEBUG(1, ("Could not malloc principal\n"));
1510                 return False;
1511         }
1512
1513         memcpy(principal, spnego.negTokenInit.mechListMIC.data,
1514                spnego.negTokenInit.mechListMIC.length);
1515         principal[spnego.negTokenInit.mechListMIC.length] = '\0';
1516
1517         retval = cli_krb5_get_ticket(principal, 0, &tkt, &session_key_krb5, 0, NULL, NULL);
1518
1519         if (retval) {
1520                 char *user = NULL;
1521
1522                 /* Let's try to first get the TGT, for that we need a
1523                    password. */
1524
1525                 if (opt_password == NULL) {
1526                         DEBUG(10, ("Requesting password\n"));
1527                         x_fprintf(x_stdout, "PW\n");
1528                         return True;
1529                 }
1530
1531                 user = talloc_asprintf(talloc_tos(), "%s@%s", opt_username, opt_domain);
1532                 if (!user) {
1533                         return false;
1534                 }
1535
1536                 if ((retval = kerberos_kinit_password(user, opt_password, 0, NULL))) {
1537                         DEBUG(10, ("Requesting TGT failed: %s\n", error_message(retval)));
1538                         return False;
1539                 }
1540
1541                 retval = cli_krb5_get_ticket(principal, 0, &tkt, &session_key_krb5, 0, NULL, NULL);
1542
1543                 if (retval) {
1544                         DEBUG(10, ("Kinit suceeded, but getting a ticket failed: %s\n", error_message(retval)));
1545                         return False;
1546                 }
1547         }
1548
1549         data_blob_free(&session_key_krb5);
1550
1551         ZERO_STRUCT(reply);
1552
1553         reply.type = SPNEGO_NEG_TOKEN_INIT;
1554         reply.negTokenInit.mechTypes = my_mechs;
1555         reply.negTokenInit.reqFlags = 0;
1556         reply.negTokenInit.mechToken = tkt;
1557         reply.negTokenInit.mechListMIC = data_blob_null;
1558
1559         len = write_spnego_data(&to_server, &reply);
1560         data_blob_free(&tkt);
1561
1562         if (len == -1) {
1563                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1564                 return False;
1565         }
1566
1567         reply_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1568         x_fprintf(x_stdout, "KK %s *\n", reply_base64);
1569
1570         TALLOC_FREE(reply_base64);
1571         data_blob_free(&to_server);
1572         DEBUG(10, ("sent GSS-SPNEGO KERBEROS5 negTokenInit\n"));
1573         return True;
1574 }
1575
1576 static void manage_client_krb5_targ(SPNEGO_DATA spnego)
1577 {
1578         switch (spnego.negTokenTarg.negResult) {
1579         case SPNEGO_ACCEPT_INCOMPLETE:
1580                 DEBUG(1, ("Got a Kerberos negTokenTarg with ACCEPT_INCOMPLETE\n"));
1581                 x_fprintf(x_stdout, "BH Got a Kerberos negTokenTarg with "
1582                                     "ACCEPT_INCOMPLETE\n");
1583                 break;
1584         case SPNEGO_ACCEPT_COMPLETED:
1585                 DEBUG(10, ("Accept completed\n"));
1586                 x_fprintf(x_stdout, "AF\n");
1587                 break;
1588         case SPNEGO_REJECT:
1589                 DEBUG(10, ("Rejected\n"));
1590                 x_fprintf(x_stdout, "NA\n");
1591                 break;
1592         default:
1593                 DEBUG(1, ("Got an invalid negTokenTarg\n"));
1594                 x_fprintf(x_stdout, "AF\n");
1595         }
1596 }
1597
1598 #endif
1599
1600 static void manage_gss_spnego_client_request(struct ntlm_auth_state *state,
1601                                                 char *buf, int length)
1602 {
1603         DATA_BLOB request;
1604         SPNEGO_DATA spnego;
1605         ssize_t len;
1606
1607         if (!opt_username || !*opt_username) {
1608                 x_fprintf(x_stderr, "username must be specified!\n\n");
1609                 exit(1);
1610         }
1611
1612         if (strlen(buf) <= 3) {
1613                 DEBUG(1, ("SPNEGO query [%s] too short\n", buf));
1614                 x_fprintf(x_stdout, "BH SPNEGO query too short\n");
1615                 return;
1616         }
1617
1618         request = base64_decode_data_blob(buf+3);
1619
1620         if (strncmp(buf, "PW ", 3) == 0) {
1621
1622                 /* We asked for a password and obviously got it :-) */
1623
1624                 opt_password = SMB_STRNDUP((const char *)request.data, request.length);
1625
1626                 if (opt_password == NULL) {
1627                         DEBUG(1, ("Out of memory\n"));
1628                         x_fprintf(x_stdout, "BH Out of memory\n");
1629                         data_blob_free(&request);
1630                         return;
1631                 }
1632
1633                 x_fprintf(x_stdout, "OK\n");
1634                 data_blob_free(&request);
1635                 return;
1636         }
1637
1638         if ( (strncmp(buf, "TT ", 3) != 0) &&
1639              (strncmp(buf, "AF ", 3) != 0) &&
1640              (strncmp(buf, "NA ", 3) != 0) ) {
1641                 DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
1642                 x_fprintf(x_stdout, "BH SPNEGO request invalid\n");
1643                 data_blob_free(&request);
1644                 return;
1645         }
1646
1647         /* So we got a server challenge to generate a SPNEGO
1648            client-to-server request... */
1649
1650         len = read_spnego_data(request, &spnego);
1651         data_blob_free(&request);
1652
1653         if (len == -1) {
1654                 DEBUG(1, ("Could not read SPNEGO data for [%s]\n", buf));
1655                 x_fprintf(x_stdout, "BH Could not read SPNEGO data\n");
1656                 return;
1657         }
1658
1659         if (spnego.type == SPNEGO_NEG_TOKEN_INIT) {
1660
1661                 /* The server offers a list of mechanisms */
1662
1663                 const char **mechType = (const char **)spnego.negTokenInit.mechTypes;
1664
1665                 while (*mechType != NULL) {
1666
1667 #ifdef HAVE_KRB5
1668                         if ( (strcmp(*mechType, OID_KERBEROS5_OLD) == 0) ||
1669                              (strcmp(*mechType, OID_KERBEROS5) == 0) ) {
1670                                 if (manage_client_krb5_init(spnego))
1671                                         goto out;
1672                         }
1673 #endif
1674
1675                         if (strcmp(*mechType, OID_NTLMSSP) == 0) {
1676                                 if (manage_client_ntlmssp_init(spnego))
1677                                         goto out;
1678                         }
1679
1680                         mechType++;
1681                 }
1682
1683                 DEBUG(1, ("Server offered no compatible mechanism\n"));
1684                 x_fprintf(x_stdout, "BH Server offered no compatible mechanism\n");
1685                 return;
1686         }
1687
1688         if (spnego.type == SPNEGO_NEG_TOKEN_TARG) {
1689
1690                 if (spnego.negTokenTarg.supportedMech == NULL) {
1691                         /* On accept/reject Windows does not send the
1692                            mechanism anymore. Handle that here and
1693                            shut down the mechanisms. */
1694
1695                         switch (spnego.negTokenTarg.negResult) {
1696                         case SPNEGO_ACCEPT_COMPLETED:
1697                                 x_fprintf(x_stdout, "AF\n");
1698                                 break;
1699                         case SPNEGO_REJECT:
1700                                 x_fprintf(x_stdout, "NA\n");
1701                                 break;
1702                         default:
1703                                 DEBUG(1, ("Got a negTokenTarg with no mech and an "
1704                                           "unknown negResult: %d\n",
1705                                           spnego.negTokenTarg.negResult));
1706                                 x_fprintf(x_stdout, "BH Got a negTokenTarg with"
1707                                                     " no mech and an unknown "
1708                                                     "negResult\n");
1709                         }
1710
1711                         ntlmssp_end(&client_ntlmssp_state);
1712                         goto out;
1713                 }
1714
1715                 if (strcmp(spnego.negTokenTarg.supportedMech,
1716                            OID_NTLMSSP) == 0) {
1717                         manage_client_ntlmssp_targ(spnego);
1718                         goto out;
1719                 }
1720
1721 #if HAVE_KRB5
1722                 if (strcmp(spnego.negTokenTarg.supportedMech,
1723                            OID_KERBEROS5_OLD) == 0) {
1724                         manage_client_krb5_targ(spnego);
1725                         goto out;
1726                 }
1727 #endif
1728
1729         }
1730
1731         DEBUG(1, ("Got an SPNEGO token I could not handle [%s]!\n", buf));
1732         x_fprintf(x_stdout, "BH Got an SPNEGO token I could not handle\n");
1733         return;
1734
1735  out:
1736         free_spnego_data(&spnego);
1737         return;
1738 }
1739
1740 static void manage_ntlm_server_1_request(struct ntlm_auth_state *state,
1741                                                 char *buf, int length)
1742 {
1743         char *request, *parameter;
1744         static DATA_BLOB challenge;
1745         static DATA_BLOB lm_response;
1746         static DATA_BLOB nt_response;
1747         static char *full_username;
1748         static char *username;
1749         static char *domain;
1750         static char *plaintext_password;
1751         static bool ntlm_server_1_user_session_key;
1752         static bool ntlm_server_1_lm_session_key;
1753
1754         if (strequal(buf, ".")) {
1755                 if (!full_username && !username) {
1756                         x_fprintf(x_stdout, "Error: No username supplied!\n");
1757                 } else if (plaintext_password) {
1758                         /* handle this request as plaintext */
1759                         if (!full_username) {
1760                                 if (asprintf(&full_username, "%s%c%s", domain, winbind_separator(), username) == -1) {
1761                                         x_fprintf(x_stdout, "Error: Out of memory in asprintf!\n.\n");
1762                                         return;
1763                                 }
1764                         }
1765                         if (check_plaintext_auth(full_username, plaintext_password, False)) {
1766                                 x_fprintf(x_stdout, "Authenticated: Yes\n");
1767                         } else {
1768                                 x_fprintf(x_stdout, "Authenticated: No\n");
1769                         }
1770                 } else if (!lm_response.data && !nt_response.data) {
1771                         x_fprintf(x_stdout, "Error: No password supplied!\n");
1772                 } else if (!challenge.data) {
1773                         x_fprintf(x_stdout, "Error: No lanman-challenge supplied!\n");
1774                 } else {
1775                         char *error_string = NULL;
1776                         uchar lm_key[8];
1777                         uchar user_session_key[16];
1778                         uint32 flags = 0;
1779
1780                         if (full_username && !username) {
1781                                 fstring fstr_user;
1782                                 fstring fstr_domain;
1783
1784                                 if (!parse_ntlm_auth_domain_user(full_username, fstr_user, fstr_domain)) {
1785                                         /* username might be 'tainted', don't print into our new-line deleimianted stream */
1786                                         x_fprintf(x_stdout, "Error: Could not parse into domain and username\n");
1787                                 }
1788                                 SAFE_FREE(username);
1789                                 SAFE_FREE(domain);
1790                                 username = smb_xstrdup(fstr_user);
1791                                 domain = smb_xstrdup(fstr_domain);
1792                         }
1793
1794                         if (!domain) {
1795                                 domain = smb_xstrdup(get_winbind_domain());
1796                         }
1797
1798                         if (ntlm_server_1_lm_session_key)
1799                                 flags |= WBFLAG_PAM_LMKEY;
1800
1801                         if (ntlm_server_1_user_session_key)
1802                                 flags |= WBFLAG_PAM_USER_SESSION_KEY;
1803
1804                         if (!NT_STATUS_IS_OK(
1805                                     contact_winbind_auth_crap(username,
1806                                                               domain,
1807                                                               global_myname(),
1808                                                               &challenge,
1809                                                               &lm_response,
1810                                                               &nt_response,
1811                                                               flags,
1812                                                               lm_key,
1813                                                               user_session_key,
1814                                                               &error_string,
1815                                                               NULL))) {
1816
1817                                 x_fprintf(x_stdout, "Authenticated: No\n");
1818                                 x_fprintf(x_stdout, "Authentication-Error: %s\n.\n", error_string);
1819                         } else {
1820                                 static char zeros[16];
1821                                 char *hex_lm_key;
1822                                 char *hex_user_session_key;
1823
1824                                 x_fprintf(x_stdout, "Authenticated: Yes\n");
1825
1826                                 if (ntlm_server_1_lm_session_key
1827                                     && (memcmp(zeros, lm_key,
1828                                                sizeof(lm_key)) != 0)) {
1829                                         hex_lm_key = hex_encode_talloc(NULL,
1830                                                                 (const unsigned char *)lm_key,
1831                                                                 sizeof(lm_key));
1832                                         x_fprintf(x_stdout, "LANMAN-Session-Key: %s\n", hex_lm_key);
1833                                         TALLOC_FREE(hex_lm_key);
1834                                 }
1835
1836                                 if (ntlm_server_1_user_session_key
1837                                     && (memcmp(zeros, user_session_key,
1838                                                sizeof(user_session_key)) != 0)) {
1839                                         hex_user_session_key = hex_encode_talloc(NULL,
1840                                                                           (const unsigned char *)user_session_key,
1841                                                                           sizeof(user_session_key));
1842                                         x_fprintf(x_stdout, "User-Session-Key: %s\n", hex_user_session_key);
1843                                         TALLOC_FREE(hex_user_session_key);
1844                                 }
1845                         }
1846                         SAFE_FREE(error_string);
1847                 }
1848                 /* clear out the state */
1849                 challenge = data_blob_null;
1850                 nt_response = data_blob_null;
1851                 lm_response = data_blob_null;
1852                 SAFE_FREE(full_username);
1853                 SAFE_FREE(username);
1854                 SAFE_FREE(domain);
1855                 SAFE_FREE(plaintext_password);
1856                 ntlm_server_1_user_session_key = False;
1857                 ntlm_server_1_lm_session_key = False;
1858                 x_fprintf(x_stdout, ".\n");
1859
1860                 return;
1861         }
1862
1863         request = buf;
1864
1865         /* Indicates a base64 encoded structure */
1866         parameter = strstr_m(request, ":: ");
1867         if (!parameter) {
1868                 parameter = strstr_m(request, ": ");
1869
1870                 if (!parameter) {
1871                         DEBUG(0, ("Parameter not found!\n"));
1872                         x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
1873                         return;
1874                 }
1875
1876                 parameter[0] ='\0';
1877                 parameter++;
1878                 parameter[0] ='\0';
1879                 parameter++;
1880
1881         } else {
1882                 parameter[0] ='\0';
1883                 parameter++;
1884                 parameter[0] ='\0';
1885                 parameter++;
1886                 parameter[0] ='\0';
1887                 parameter++;
1888
1889                 base64_decode_inplace(parameter);
1890         }
1891
1892         if (strequal(request, "LANMAN-Challenge")) {
1893                 challenge = strhex_to_data_blob(NULL, parameter);
1894                 if (challenge.length != 8) {
1895                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 8)\n.\n",
1896                                   parameter,
1897                                   (int)challenge.length);
1898                         challenge = data_blob_null;
1899                 }
1900         } else if (strequal(request, "NT-Response")) {
1901                 nt_response = strhex_to_data_blob(NULL, parameter);
1902                 if (nt_response.length < 24) {
1903                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (only got %d bytes, needed at least 24)\n.\n",
1904                                   parameter,
1905                                   (int)nt_response.length);
1906                         nt_response = data_blob_null;
1907                 }
1908         } else if (strequal(request, "LANMAN-Response")) {
1909                 lm_response = strhex_to_data_blob(NULL, parameter);
1910                 if (lm_response.length != 24) {
1911                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 24)\n.\n",
1912                                   parameter,
1913                                   (int)lm_response.length);
1914                         lm_response = data_blob_null;
1915                 }
1916         } else if (strequal(request, "Password")) {
1917                 plaintext_password = smb_xstrdup(parameter);
1918         } else if (strequal(request, "NT-Domain")) {
1919                 domain = smb_xstrdup(parameter);
1920         } else if (strequal(request, "Username")) {
1921                 username = smb_xstrdup(parameter);
1922         } else if (strequal(request, "Full-Username")) {
1923                 full_username = smb_xstrdup(parameter);
1924         } else if (strequal(request, "Request-User-Session-Key")) {
1925                 ntlm_server_1_user_session_key = strequal(parameter, "Yes");
1926         } else if (strequal(request, "Request-LanMan-Session-Key")) {
1927                 ntlm_server_1_lm_session_key = strequal(parameter, "Yes");
1928         } else {
1929                 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
1930         }
1931 }
1932
1933 static void manage_ntlm_change_password_1_request(struct ntlm_auth_state *state,
1934                                                         char *buf, int length)
1935 {
1936         char *request, *parameter;
1937         static DATA_BLOB new_nt_pswd;
1938         static DATA_BLOB old_nt_hash_enc;
1939         static DATA_BLOB new_lm_pswd;
1940         static DATA_BLOB old_lm_hash_enc;
1941         static char *full_username = NULL;
1942         static char *username = NULL;
1943         static char *domain = NULL;
1944         static char *newpswd =  NULL;
1945         static char *oldpswd = NULL;
1946
1947         if (strequal(buf, ".")) {
1948                 if(newpswd && oldpswd) {
1949                         uchar old_nt_hash[16];
1950                         uchar old_lm_hash[16];
1951                         uchar new_nt_hash[16];
1952                         uchar new_lm_hash[16];
1953
1954                         new_nt_pswd = data_blob(NULL, 516);
1955                         old_nt_hash_enc = data_blob(NULL, 16);
1956
1957                         /* Calculate the MD4 hash (NT compatible) of the
1958                          * password */
1959                         E_md4hash(oldpswd, old_nt_hash);
1960                         E_md4hash(newpswd, new_nt_hash);
1961
1962                         /* E_deshash returns false for 'long'
1963                            passwords (> 14 DOS chars).
1964
1965                            Therefore, don't send a buffer
1966                            encrypted with the truncated hash
1967                            (it could allow an even easier
1968                            attack on the password)
1969
1970                            Likewise, obey the admin's restriction
1971                         */
1972
1973                         if (lp_client_lanman_auth() &&
1974                             E_deshash(newpswd, new_lm_hash) &&
1975                             E_deshash(oldpswd, old_lm_hash)) {
1976                                 new_lm_pswd = data_blob(NULL, 516);
1977                                 old_lm_hash_enc = data_blob(NULL, 16);
1978                                 encode_pw_buffer(new_lm_pswd.data, newpswd,
1979                                                  STR_UNICODE);
1980
1981                                 arcfour_crypt(new_lm_pswd.data, old_nt_hash, 516);
1982                                 E_old_pw_hash(new_nt_hash, old_lm_hash,
1983                                               old_lm_hash_enc.data);
1984                         } else {
1985                                 new_lm_pswd.data = NULL;
1986                                 new_lm_pswd.length = 0;
1987                                 old_lm_hash_enc.data = NULL;
1988                                 old_lm_hash_enc.length = 0;
1989                         }
1990
1991                         encode_pw_buffer(new_nt_pswd.data, newpswd,
1992                                          STR_UNICODE);
1993
1994                         arcfour_crypt(new_nt_pswd.data, old_nt_hash, 516);
1995                         E_old_pw_hash(new_nt_hash, old_nt_hash,
1996                                       old_nt_hash_enc.data);
1997                 }
1998
1999                 if (!full_username && !username) {
2000                         x_fprintf(x_stdout, "Error: No username supplied!\n");
2001                 } else if ((!new_nt_pswd.data || !old_nt_hash_enc.data) &&
2002                            (!new_lm_pswd.data || old_lm_hash_enc.data) ) {
2003                         x_fprintf(x_stdout, "Error: No NT or LM password "
2004                                   "blobs supplied!\n");
2005                 } else {
2006                         char *error_string = NULL;
2007
2008                         if (full_username && !username) {
2009                                 fstring fstr_user;
2010                                 fstring fstr_domain;
2011
2012                                 if (!parse_ntlm_auth_domain_user(full_username,
2013                                                                  fstr_user,
2014                                                                  fstr_domain)) {
2015                                         /* username might be 'tainted', don't
2016                                          * print into our new-line
2017                                          * deleimianted stream */
2018                                         x_fprintf(x_stdout, "Error: Could not "
2019                                                   "parse into domain and "
2020                                                   "username\n");
2021                                         SAFE_FREE(username);
2022                                         username = smb_xstrdup(full_username);
2023                                 } else {
2024                                         SAFE_FREE(username);
2025                                         SAFE_FREE(domain);
2026                                         username = smb_xstrdup(fstr_user);
2027                                         domain = smb_xstrdup(fstr_domain);
2028                                 }
2029
2030                         }
2031
2032                         if(!NT_STATUS_IS_OK(contact_winbind_change_pswd_auth_crap(
2033                                                     username, domain,
2034                                                     new_nt_pswd,
2035                                                     old_nt_hash_enc,
2036                                                     new_lm_pswd,
2037                                                     old_lm_hash_enc,
2038                                                     &error_string))) {
2039                                 x_fprintf(x_stdout, "Password-Change: No\n");
2040                                 x_fprintf(x_stdout, "Password-Change-Error: "
2041                                           "%s\n.\n", error_string);
2042                         } else {
2043                                 x_fprintf(x_stdout, "Password-Change: Yes\n");
2044                         }
2045
2046                         SAFE_FREE(error_string);
2047                 }
2048                 /* clear out the state */
2049                 new_nt_pswd = data_blob_null;
2050                 old_nt_hash_enc = data_blob_null;
2051                 new_lm_pswd = data_blob_null;
2052                 old_nt_hash_enc = data_blob_null;
2053                 SAFE_FREE(full_username);
2054                 SAFE_FREE(username);
2055                 SAFE_FREE(domain);
2056                 SAFE_FREE(newpswd);
2057                 SAFE_FREE(oldpswd);
2058                 x_fprintf(x_stdout, ".\n");
2059
2060                 return;
2061         }
2062
2063         request = buf;
2064
2065         /* Indicates a base64 encoded structure */
2066         parameter = strstr_m(request, ":: ");
2067         if (!parameter) {
2068                 parameter = strstr_m(request, ": ");
2069
2070                 if (!parameter) {
2071                         DEBUG(0, ("Parameter not found!\n"));
2072                         x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
2073                         return;
2074                 }
2075
2076                 parameter[0] ='\0';
2077                 parameter++;
2078                 parameter[0] ='\0';
2079                 parameter++;
2080         } else {
2081                 parameter[0] ='\0';
2082                 parameter++;
2083                 parameter[0] ='\0';
2084                 parameter++;
2085                 parameter[0] ='\0';
2086                 parameter++;
2087
2088                 base64_decode_inplace(parameter);
2089         }
2090
2091         if (strequal(request, "new-nt-password-blob")) {
2092                 new_nt_pswd = strhex_to_data_blob(NULL, parameter);
2093                 if (new_nt_pswd.length != 516) {
2094                         x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2095                                   "(got %d bytes, expected 516)\n.\n",
2096                                   parameter,
2097                                   (int)new_nt_pswd.length);
2098                         new_nt_pswd = data_blob_null;
2099                 }
2100         } else if (strequal(request, "old-nt-hash-blob")) {
2101                 old_nt_hash_enc = strhex_to_data_blob(NULL, parameter);
2102                 if (old_nt_hash_enc.length != 16) {
2103                         x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2104                                   "(got %d bytes, expected 16)\n.\n",
2105                                   parameter,
2106                                   (int)old_nt_hash_enc.length);
2107                         old_nt_hash_enc = data_blob_null;
2108                 }
2109         } else if (strequal(request, "new-lm-password-blob")) {
2110                 new_lm_pswd = strhex_to_data_blob(NULL, parameter);
2111                 if (new_lm_pswd.length != 516) {
2112                         x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2113                                   "(got %d bytes, expected 516)\n.\n",
2114                                   parameter,
2115                                   (int)new_lm_pswd.length);
2116                         new_lm_pswd = data_blob_null;
2117                 }
2118         }
2119         else if (strequal(request, "old-lm-hash-blob")) {
2120                 old_lm_hash_enc = strhex_to_data_blob(NULL, parameter);
2121                 if (old_lm_hash_enc.length != 16)
2122                 {
2123                         x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2124                                   "(got %d bytes, expected 16)\n.\n",
2125                                   parameter,
2126                                   (int)old_lm_hash_enc.length);
2127                         old_lm_hash_enc = data_blob_null;
2128                 }
2129         } else if (strequal(request, "nt-domain")) {
2130                 domain = smb_xstrdup(parameter);
2131         } else if(strequal(request, "username")) {
2132                 username = smb_xstrdup(parameter);
2133         } else if(strequal(request, "full-username")) {
2134                 username = smb_xstrdup(parameter);
2135         } else if(strequal(request, "new-password")) {
2136                 newpswd = smb_xstrdup(parameter);
2137         } else if (strequal(request, "old-password")) {
2138                 oldpswd = smb_xstrdup(parameter);
2139         } else {
2140                 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
2141         }
2142 }
2143
2144 static void manage_squid_request(struct ntlm_auth_state *state,
2145                 stdio_helper_function fn)
2146 {
2147         char *buf;
2148         char tmp[INITIAL_BUFFER_SIZE+1];
2149         int length, buf_size = 0;
2150         char *c;
2151
2152         buf = talloc_strdup(state->mem_ctx, "");
2153         if (!buf) {
2154                 DEBUG(0, ("Failed to allocate input buffer.\n"));
2155                 x_fprintf(x_stderr, "ERR\n");
2156                 exit(1);
2157         }
2158
2159         do {
2160
2161                 /* this is not a typo - x_fgets doesn't work too well under
2162                  * squid */
2163                 if (fgets(tmp, sizeof(tmp)-1, stdin) == NULL) {
2164                         if (ferror(stdin)) {
2165                                 DEBUG(1, ("fgets() failed! dying..... errno=%d "
2166                                           "(%s)\n", ferror(stdin),
2167                                           strerror(ferror(stdin))));
2168
2169                                 exit(1);
2170                         }
2171                         exit(0);
2172                 }
2173
2174                 buf = talloc_strdup_append_buffer(buf, tmp);
2175                 buf_size += INITIAL_BUFFER_SIZE;
2176
2177                 if (buf_size > MAX_BUFFER_SIZE) {
2178                         DEBUG(2, ("Oversized message\n"));
2179                         x_fprintf(x_stderr, "ERR\n");
2180                         talloc_free(buf);
2181                         return;
2182                 }
2183
2184                 c = strchr(buf, '\n');
2185         } while (c == NULL);
2186
2187         *c = '\0';
2188         length = c-buf;
2189
2190         DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
2191
2192         if (buf[0] == '\0') {
2193                 DEBUG(2, ("Invalid Request\n"));
2194                 x_fprintf(x_stderr, "ERR\n");
2195                 talloc_free(buf);
2196                 return;
2197         }
2198
2199         fn(state, buf, length);
2200         talloc_free(buf);
2201 }
2202
2203
2204 static void squid_stream(enum stdio_helper_mode stdio_mode, stdio_helper_function fn) {
2205         TALLOC_CTX *mem_ctx;
2206         struct ntlm_auth_state *state;
2207
2208         /* initialize FDescs */
2209         x_setbuf(x_stdout, NULL);
2210         x_setbuf(x_stderr, NULL);
2211
2212         mem_ctx = talloc_init("ntlm_auth");
2213         if (!mem_ctx) {
2214                 DEBUG(0, ("squid_stream: Failed to create talloc context\n"));
2215                 x_fprintf(x_stderr, "ERR\n");
2216                 exit(1);
2217         }
2218
2219         state = talloc_zero(mem_ctx, struct ntlm_auth_state);
2220         if (!state) {
2221                 DEBUG(0, ("squid_stream: Failed to talloc ntlm_auth_state\n"));
2222                 x_fprintf(x_stderr, "ERR\n");
2223                 exit(1);
2224         }
2225
2226         state->mem_ctx = mem_ctx;
2227         state->helper_mode = stdio_mode;
2228
2229         while(1) {
2230                 manage_squid_request(state, fn);
2231         }
2232 }
2233
2234
2235 /* Authenticate a user with a challenge/response */
2236
2237 static bool check_auth_crap(void)
2238 {
2239         NTSTATUS nt_status;
2240         uint32 flags = 0;
2241         char lm_key[8];
2242         char user_session_key[16];
2243         char *hex_lm_key;
2244         char *hex_user_session_key;
2245         char *error_string;
2246         static uint8 zeros[16];
2247
2248         x_setbuf(x_stdout, NULL);
2249
2250         if (request_lm_key)
2251                 flags |= WBFLAG_PAM_LMKEY;
2252
2253         if (request_user_session_key)
2254                 flags |= WBFLAG_PAM_USER_SESSION_KEY;
2255
2256         flags |= WBFLAG_PAM_NT_STATUS_SQUASH;
2257
2258         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
2259                                               opt_workstation,
2260                                               &opt_challenge,
2261                                               &opt_lm_response,
2262                                               &opt_nt_response,
2263                                               flags,
2264                                               (unsigned char *)lm_key,
2265                                               (unsigned char *)user_session_key,
2266                                               &error_string, NULL);
2267
2268         if (!NT_STATUS_IS_OK(nt_status)) {
2269                 x_fprintf(x_stdout, "%s (0x%x)\n",
2270                           error_string,
2271                           NT_STATUS_V(nt_status));
2272                 SAFE_FREE(error_string);
2273                 return False;
2274         }
2275
2276         if (request_lm_key
2277             && (memcmp(zeros, lm_key,
2278                        sizeof(lm_key)) != 0)) {
2279                 hex_lm_key = hex_encode_talloc(talloc_tos(), (const unsigned char *)lm_key,
2280                                         sizeof(lm_key));
2281                 x_fprintf(x_stdout, "LM_KEY: %s\n", hex_lm_key);
2282                 TALLOC_FREE(hex_lm_key);
2283         }
2284         if (request_user_session_key
2285             && (memcmp(zeros, user_session_key,
2286                        sizeof(user_session_key)) != 0)) {
2287                 hex_user_session_key = hex_encode_talloc(talloc_tos(), (const unsigned char *)user_session_key,
2288                                                   sizeof(user_session_key));
2289                 x_fprintf(x_stdout, "NT_KEY: %s\n", hex_user_session_key);
2290                 TALLOC_FREE(hex_user_session_key);
2291         }
2292
2293         return True;
2294 }
2295
2296 /* Main program */
2297
2298 enum {
2299         OPT_USERNAME = 1000,
2300         OPT_DOMAIN,
2301         OPT_WORKSTATION,
2302         OPT_CHALLENGE,
2303         OPT_RESPONSE,
2304         OPT_LM,
2305         OPT_NT,
2306         OPT_PASSWORD,
2307         OPT_LM_KEY,
2308         OPT_USER_SESSION_KEY,
2309         OPT_DIAGNOSTICS,
2310         OPT_REQUIRE_MEMBERSHIP,
2311         OPT_USE_CACHED_CREDS
2312 };
2313
2314  int main(int argc, const char **argv)
2315 {
2316         TALLOC_CTX *frame = talloc_stackframe();
2317         int opt;
2318         static const char *helper_protocol;
2319         static int diagnostics;
2320
2321         static const char *hex_challenge;
2322         static const char *hex_lm_response;
2323         static const char *hex_nt_response;
2324
2325         poptContext pc;
2326
2327         /* NOTE: DO NOT change this interface without considering the implications!
2328            This is an external interface, which other programs will use to interact
2329            with this helper.
2330         */
2331
2332         /* We do not use single-letter command abbreviations, because they harm future
2333            interface stability. */
2334
2335         struct poptOption long_options[] = {
2336                 POPT_AUTOHELP
2337                 { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
2338                 { "username", 0, POPT_ARG_STRING, &opt_username, OPT_USERNAME, "username"},
2339                 { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
2340                 { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
2341                 { "challenge", 0, POPT_ARG_STRING, &hex_challenge, OPT_CHALLENGE, "challenge (HEX encoded)"},
2342                 { "lm-response", 0, POPT_ARG_STRING, &hex_lm_response, OPT_LM, "LM Response to the challenge (HEX encoded)"},
2343                 { "nt-response", 0, POPT_ARG_STRING, &hex_nt_response, OPT_NT, "NT or NTLMv2 Response to the challenge (HEX encoded)"},
2344                 { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
2345                 { "request-lm-key", 0, POPT_ARG_NONE, &request_lm_key, OPT_LM_KEY, "Retrieve LM session key"},
2346                 { "request-nt-key", 0, POPT_ARG_NONE, &request_user_session_key, OPT_USER_SESSION_KEY, "Retrieve User (NT) session key"},
2347                 { "use-cached-creds", 0, POPT_ARG_NONE, &use_cached_creds, OPT_USE_CACHED_CREDS, "Use cached credentials if no password is given"},
2348                 { "diagnostics", 0, POPT_ARG_NONE, &diagnostics, OPT_DIAGNOSTICS, "Perform diagnostics on the authentictaion chain"},
2349                 { "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" },
2350                 POPT_COMMON_CONFIGFILE
2351                 POPT_COMMON_VERSION
2352                 POPT_TABLEEND
2353         };
2354
2355         /* Samba client initialisation */
2356         load_case_tables();
2357
2358         dbf = x_stderr;
2359
2360         /* Parse options */
2361
2362         pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
2363
2364         /* Parse command line options */
2365
2366         if (argc == 1) {
2367                 poptPrintHelp(pc, stderr, 0);
2368                 return 1;
2369         }
2370
2371         while((opt = poptGetNextOpt(pc)) != -1) {
2372                 /* Get generic config options like --configfile */
2373         }
2374
2375         poptFreeContext(pc);
2376
2377         if (!lp_load(get_dyn_CONFIGFILE(), True, False, False, True)) {
2378                 d_fprintf(stderr, "ntlm_auth: error opening config file %s. Error was %s\n",
2379                         get_dyn_CONFIGFILE(), strerror(errno));
2380                 exit(1);
2381         }
2382
2383         pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
2384                             POPT_CONTEXT_KEEP_FIRST);
2385
2386         while((opt = poptGetNextOpt(pc)) != -1) {
2387                 switch (opt) {
2388                 case OPT_CHALLENGE:
2389                         opt_challenge = strhex_to_data_blob(NULL, hex_challenge);
2390                         if (opt_challenge.length != 8) {
2391                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2392                                           hex_challenge,
2393                                           (int)opt_challenge.length);
2394                                 exit(1);
2395                         }
2396                         break;
2397                 case OPT_LM:
2398                         opt_lm_response = strhex_to_data_blob(NULL, hex_lm_response);
2399                         if (opt_lm_response.length != 24) {
2400                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2401                                           hex_lm_response,
2402                                           (int)opt_lm_response.length);
2403                                 exit(1);
2404                         }
2405                         break;
2406
2407                 case OPT_NT:
2408                         opt_nt_response = strhex_to_data_blob(NULL, hex_nt_response);
2409                         if (opt_nt_response.length < 24) {
2410                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2411                                           hex_nt_response,
2412                                           (int)opt_nt_response.length);
2413                                 exit(1);
2414                         }
2415                         break;
2416
2417                 case OPT_REQUIRE_MEMBERSHIP:
2418                         if (StrnCaseCmp("S-", require_membership_of, 2) == 0) {
2419                                 require_membership_of_sid = require_membership_of;
2420                         }
2421                         break;
2422                 }
2423         }
2424
2425         if (opt_username) {
2426                 char *domain = SMB_STRDUP(opt_username);
2427                 char *p = strchr_m(domain, *lp_winbind_separator());
2428                 if (p) {
2429                         opt_username = p+1;
2430                         *p = '\0';
2431                         if (opt_domain && !strequal(opt_domain, domain)) {
2432                                 x_fprintf(x_stderr, "Domain specified in username (%s) "
2433                                         "doesn't match specified domain (%s)!\n\n",
2434                                         domain, opt_domain);
2435                                 poptPrintHelp(pc, stderr, 0);
2436                                 exit(1);
2437                         }
2438                         opt_domain = domain;
2439                 } else {
2440                         SAFE_FREE(domain);
2441                 }
2442         }
2443
2444         /* Note: if opt_domain is "" then send no domain */
2445         if (opt_domain == NULL) {
2446                 opt_domain = get_winbind_domain();
2447         }
2448
2449         if (opt_workstation == NULL) {
2450                 opt_workstation = "";
2451         }
2452
2453         if (helper_protocol) {
2454                 int i;
2455                 for (i=0; i<NUM_HELPER_MODES; i++) {
2456                         if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
2457                                 squid_stream(stdio_helper_protocols[i].mode, stdio_helper_protocols[i].fn);
2458                                 exit(0);
2459                         }
2460                 }
2461                 x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol);
2462
2463                 for (i=0; i<NUM_HELPER_MODES; i++) {
2464                         x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name);
2465                 }
2466
2467                 exit(1);
2468         }
2469
2470         if (!opt_username || !*opt_username) {
2471                 x_fprintf(x_stderr, "username must be specified!\n\n");
2472                 poptPrintHelp(pc, stderr, 0);
2473                 exit(1);
2474         }
2475
2476         if (opt_challenge.length) {
2477                 if (!check_auth_crap()) {
2478                         exit(1);
2479                 }
2480                 exit(0);
2481         }
2482
2483         if (!opt_password) {
2484                 opt_password = getpass("password: ");
2485         }
2486
2487         if (diagnostics) {
2488                 if (!diagnose_ntlm_auth()) {
2489                         return 1;
2490                 }
2491         } else {
2492                 fstring user;
2493
2494                 fstr_sprintf(user, "%s%c%s", opt_domain, winbind_separator(), opt_username);
2495                 if (!check_plaintext_auth(user, opt_password, True)) {
2496                         return 1;
2497                 }
2498         }
2499
2500         /* Exit code */
2501
2502         poptFreeContext(pc);
2503         TALLOC_FREE(frame);
2504         return 0;
2505 }