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