source3/utils/ntlm_auth.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Winbind status program.
   5
   6    Copyright (C) Tim Potter      2000-2003
   7    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003-2004
   8    Copyright (C) Francesco Chemolli <kinkie@kame.usr.dsi.unimi.it> 2000
   9    Copyright (C) Robert O'Callahan 2006 (added cached credential code).
  10    Copyright (C) Kai Blin <kai@samba.org> 2008
  11
  12    This program is free software; you can redistribute it and/or modify
  13    it under the terms of the GNU General Public License as published by
  14    the Free Software Foundation; either version 3 of the License, or
  15    (at your option) any later version.
  16
  17    This program is distributed in the hope that it will be useful,
  18    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20    GNU General Public License for more details.
  21
  22    You should have received a copy of the GNU General Public License
  23    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24 */
  25
  26 #include "includes.h"
  27 #include "popt_common.h"
  28 #include "utils/ntlm_auth.h"
  29 #include "../libcli/auth/libcli_auth.h"
  30 #include "../libcli/auth/spnego.h"
  31 #include "../libcli/auth/ntlmssp.h"
  32 #include "smb_krb5.h"
  33 #include <iniparser.h>
  34 #include "../lib/crypto/arcfour.h"
  35 #include "libads/kerberos_proto.h"
  36 #include "nsswitch/winbind_client.h"
  37
  38 #ifndef PAM_WINBIND_CONFIG_FILE
  39 #define PAM_WINBIND_CONFIG_FILE "/etc/security/pam_winbind.conf"
  40 #endif
  41
  42 #define WINBIND_KRB5_AUTH       0x00000080
  43
  44 #undef DBGC_CLASS
  45 #define DBGC_CLASS DBGC_WINBIND
  46
  47 #define INITIAL_BUFFER_SIZE 300
  48 #define MAX_BUFFER_SIZE 630000
  49
  50 enum stdio_helper_mode {
  51         SQUID_2_4_BASIC,
  52         SQUID_2_5_BASIC,
  53         SQUID_2_5_NTLMSSP,
  54         NTLMSSP_CLIENT_1,
  55         GSS_SPNEGO,
  56         GSS_SPNEGO_CLIENT,
  57         NTLM_SERVER_1,
  58         NTLM_CHANGE_PASSWORD_1,
  59         NUM_HELPER_MODES
  60 };
  61
  62 enum ntlm_auth_cli_state {
  63         CLIENT_INITIAL = 0,
  64         CLIENT_RESPONSE,
  65         CLIENT_FINISHED,
  66         CLIENT_ERROR
  67 };
  68
  69 enum ntlm_auth_svr_state {
  70         SERVER_INITIAL = 0,
  71         SERVER_CHALLENGE,
  72         SERVER_FINISHED,
  73         SERVER_ERROR
  74 };
  75
  76 struct ntlm_auth_state {
  77         TALLOC_CTX *mem_ctx;
  78         enum stdio_helper_mode helper_mode;
  79         enum ntlm_auth_cli_state cli_state;
  80         enum ntlm_auth_svr_state svr_state;
  81         struct ntlmssp_state *ntlmssp_state;
  82         uint32_t neg_flags;
  83         char *want_feature_list;
  84         bool have_session_key;
  85         DATA_BLOB session_key;
  86         DATA_BLOB initial_message;
  87 };
  88
  89 typedef void (*stdio_helper_function)(struct ntlm_auth_state *state, char *buf,
  90                                         int length);
  91
  92 static void manage_squid_basic_request (struct ntlm_auth_state *state,
  93                                         char *buf, int length);
  94
  95 static void manage_squid_ntlmssp_request (struct ntlm_auth_state *state,
  96                                         char *buf, int length);
  97
  98 static void manage_client_ntlmssp_request (struct ntlm_auth_state *state,
  99                                         char *buf, int length);
 100
 101 static void manage_gss_spnego_request (struct ntlm_auth_state *state,
 102                                         char *buf, int length);
 103
 104 static void manage_gss_spnego_client_request (struct ntlm_auth_state *state,
 105                                         char *buf, int length);
 106
 107 static void manage_ntlm_server_1_request (struct ntlm_auth_state *state,
 108                                         char *buf, int length);
 109
 110 static void manage_ntlm_change_password_1_request(struct ntlm_auth_state *state,
 111                                         char *buf, int length);
 112
 113 static const struct {
 114         enum stdio_helper_mode mode;
 115         const char *name;
 116         stdio_helper_function fn;
 117 } stdio_helper_protocols[] = {
 118         { SQUID_2_4_BASIC, "squid-2.4-basic", manage_squid_basic_request},
 119         { SQUID_2_5_BASIC, "squid-2.5-basic", manage_squid_basic_request},
 120         { SQUID_2_5_NTLMSSP, "squid-2.5-ntlmssp", manage_squid_ntlmssp_request},
 121         { NTLMSSP_CLIENT_1, "ntlmssp-client-1", manage_client_ntlmssp_request},
 122         { GSS_SPNEGO, "gss-spnego", manage_gss_spnego_request},
 123         { GSS_SPNEGO_CLIENT, "gss-spnego-client", manage_gss_spnego_client_request},
 124         { NTLM_SERVER_1, "ntlm-server-1", manage_ntlm_server_1_request},
 125         { NTLM_CHANGE_PASSWORD_1, "ntlm-change-password-1", manage_ntlm_change_password_1_request},
 126         { NUM_HELPER_MODES, NULL, NULL}
 127 };
 128
 129 const char *opt_username;
 130 const char *opt_domain;
 131 const char *opt_workstation;
 132 const char *opt_password;
 133 static DATA_BLOB opt_challenge;
 134 static DATA_BLOB opt_lm_response;
 135 static DATA_BLOB opt_nt_response;
 136 static int request_lm_key;
 137 static int request_user_session_key;
 138 static int use_cached_creds;
 139
 140 static const char *require_membership_of;
 141 static const char *require_membership_of_sid;
 142 static const char *opt_pam_winbind_conf;
 143
 144 static char winbind_separator(void)
 145 {
 146         struct winbindd_response response;
 147         static bool got_sep;
 148         static char sep;
 149
 150         if (got_sep)
 151                 return sep;
 152
 153         ZERO_STRUCT(response);
 154
 155         /* Send off request */
 156
 157         if (winbindd_request_response(WINBINDD_INFO, NULL, &response) !=
 158             NSS_STATUS_SUCCESS) {
 159                 d_printf("could not obtain winbind separator!\n");
 160                 return *lp_winbind_separator();
 161         }
 162
 163         sep = response.data.info.winbind_separator;
 164         got_sep = True;
 165
 166         if (!sep) {
 167                 d_printf("winbind separator was NULL!\n");
 168                 return *lp_winbind_separator();
 169         }
 170
 171         return sep;
 172 }
 173
 174 const char *get_winbind_domain(void)
 175 {
 176         struct winbindd_response response;
 177
 178         static fstring winbind_domain;
 179         if (*winbind_domain) {
 180                 return winbind_domain;
 181         }
 182
 183         ZERO_STRUCT(response);
 184
 185         /* Send off request */
 186
 187         if (winbindd_request_response(WINBINDD_DOMAIN_NAME, NULL, &response) !=
 188             NSS_STATUS_SUCCESS) {
 189                 DEBUG(0, ("could not obtain winbind domain name!\n"));
 190                 return lp_workgroup();
 191         }
 192
 193         fstrcpy(winbind_domain, response.data.domain_name);
 194
 195         return winbind_domain;
 196
 197 }
 198
 199 const char *get_winbind_netbios_name(void)
 200 {
 201         struct winbindd_response response;
 202
 203         static fstring winbind_netbios_name;
 204
 205         if (*winbind_netbios_name) {
 206                 return winbind_netbios_name;
 207         }
 208
 209         ZERO_STRUCT(response);
 210
 211         /* Send off request */
 212
 213         if (winbindd_request_response(WINBINDD_NETBIOS_NAME, NULL, &response) !=
 214             NSS_STATUS_SUCCESS) {
 215                 DEBUG(0, ("could not obtain winbind netbios name!\n"));
 216                 return global_myname();
 217         }
 218
 219         fstrcpy(winbind_netbios_name, response.data.netbios_name);
 220
 221         return winbind_netbios_name;
 222
 223 }
 224
 225 DATA_BLOB get_challenge(void)
 226 {
 227         static DATA_BLOB chal;
 228         if (opt_challenge.length)
 229                 return opt_challenge;
 230
 231         chal = data_blob(NULL, 8);
 232
 233         generate_random_buffer(chal.data, chal.length);
 234         return chal;
 235 }
 236
 237 /* Copy of parse_domain_user from winbindd_util.c.  Parse a string of the
 238    form DOMAIN/user into a domain and a user */
 239
 240 static bool parse_ntlm_auth_domain_user(const char *domuser, fstring domain,
 241                                      fstring user)
 242 {
 243
 244         char *p = strchr(domuser,winbind_separator());
 245
 246         if (!p) {
 247                 return False;
 248         }
 249
 250         fstrcpy(user, p+1);
 251         fstrcpy(domain, domuser);
 252         domain[PTR_DIFF(p, domuser)] = 0;
 253         strupper_m(domain);
 254
 255         return True;
 256 }
 257
 258 static bool get_require_membership_sid(void) {
 259         struct winbindd_request request;
 260         struct winbindd_response response;
 261
 262         if (!require_membership_of) {
 263                 return True;
 264         }
 265
 266         if (require_membership_of_sid) {
 267                 return True;
 268         }
 269
 270         /* Otherwise, ask winbindd for the name->sid request */
 271
 272         ZERO_STRUCT(request);
 273         ZERO_STRUCT(response);
 274
 275         if (!parse_ntlm_auth_domain_user(require_membership_of,
 276                                          request.data.name.dom_name,
 277                                          request.data.name.name)) {
 278                 DEBUG(0, ("Could not parse %s into seperate domain/name parts!\n",
 279                           require_membership_of));
 280                 return False;
 281         }
 282
 283         if (winbindd_request_response(WINBINDD_LOOKUPNAME, &request, &response) !=
 284             NSS_STATUS_SUCCESS) {
 285                 DEBUG(0, ("Winbindd lookupname failed to resolve %s into a SID!\n",
 286                           require_membership_of));
 287                 return False;
 288         }
 289
 290         require_membership_of_sid = SMB_STRDUP(response.data.sid.sid);
 291
 292         if (require_membership_of_sid)
 293                 return True;
 294
 295         return False;
 296 }
 297
 298 /*
 299  * Get some configuration from pam_winbind.conf to see if we
 300  * need to contact trusted domain
 301  */
 302
 303 int get_pam_winbind_config()
 304 {
 305         int ctrl = 0;
 306         dictionary *d = NULL;
 307
 308         if (!opt_pam_winbind_conf || !*opt_pam_winbind_conf) {
 309                 opt_pam_winbind_conf = PAM_WINBIND_CONFIG_FILE;
 310         }
 311
 312         d = iniparser_load(CONST_DISCARD(char *, opt_pam_winbind_conf));
 313
 314         if (!d) {
 315                 return 0;
 316         }
 317
 318         if (iniparser_getboolean(d, CONST_DISCARD(char *, "global:krb5_auth"), false)) {
 319                 ctrl |= WINBIND_KRB5_AUTH;
 320         }
 321
 322         iniparser_freedict(d);
 323
 324         return ctrl;
 325 }
 326
 327 /* Authenticate a user with a plaintext password */
 328
 329 static bool check_plaintext_auth(const char *user, const char *pass,
 330                                  bool stdout_diagnostics)
 331 {
 332         struct winbindd_request request;
 333         struct winbindd_response response;
 334         NSS_STATUS result;
 335
 336         if (!get_require_membership_sid()) {
 337                 return False;
 338         }
 339
 340         /* Send off request */
 341
 342         ZERO_STRUCT(request);
 343         ZERO_STRUCT(response);
 344
 345         fstrcpy(request.data.auth.user, user);
 346         fstrcpy(request.data.auth.pass, pass);
 347         if (require_membership_of_sid) {
 348                 strlcpy(request.data.auth.require_membership_of_sid,
 349                         require_membership_of_sid,
 350                         sizeof(request.data.auth.require_membership_of_sid));
 351         }
 352
 353         result = winbindd_request_response(WINBINDD_PAM_AUTH, &request, &response);
 354
 355         /* Display response */
 356
 357         if (stdout_diagnostics) {
 358                 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
 359                         d_printf("Reading winbind reply failed! (0x01)\n");
 360                 }
 361
 362                 d_printf("%s: %s (0x%x)\n",
 363                          response.data.auth.nt_status_string,
 364                          response.data.auth.error_string,
 365                          response.data.auth.nt_status);
 366         } else {
 367                 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
 368                         DEBUG(1, ("Reading winbind reply failed! (0x01)\n"));
 369                 }
 370
 371                 DEBUG(3, ("%s: %s (0x%x)\n",
 372                           response.data.auth.nt_status_string,
 373                           response.data.auth.error_string,
 374                           response.data.auth.nt_status));
 375         }
 376
 377         return (result == NSS_STATUS_SUCCESS);
 378 }
 379
 380 /* authenticate a user with an encrypted username/password */
 381
 382 NTSTATUS contact_winbind_auth_crap(const char *username,
 383                                    const char *domain,
 384                                    const char *workstation,
 385                                    const DATA_BLOB *challenge,
 386                                    const DATA_BLOB *lm_response,
 387                                    const DATA_BLOB *nt_response,
 388                                    uint32 flags,
 389                                    uint8 lm_key[8],
 390                                    uint8 user_session_key[16],
 391                                    char **error_string,
 392                                    char **unix_name)
 393 {
 394         NTSTATUS nt_status;
 395         NSS_STATUS result;
 396         struct winbindd_request request;
 397         struct winbindd_response response;
 398
 399         if (!get_require_membership_sid()) {
 400                 return NT_STATUS_INVALID_PARAMETER;
 401         }
 402
 403         ZERO_STRUCT(request);
 404         ZERO_STRUCT(response);
 405
 406         request.flags = flags;
 407
 408         request.data.auth_crap.logon_parameters = MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT | MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT;
 409
 410         if (require_membership_of_sid)
 411                 fstrcpy(request.data.auth_crap.require_membership_of_sid, require_membership_of_sid);
 412
 413         fstrcpy(request.data.auth_crap.user, username);
 414         fstrcpy(request.data.auth_crap.domain, domain);
 415
 416         fstrcpy(request.data.auth_crap.workstation,
 417                 workstation);
 418
 419         memcpy(request.data.auth_crap.chal, challenge->data, MIN(challenge->length, 8));
 420
 421         if (lm_response && lm_response->length) {
 422                 memcpy(request.data.auth_crap.lm_resp,
 423                        lm_response->data,
 424                        MIN(lm_response->length, sizeof(request.data.auth_crap.lm_resp)));
 425                 request.data.auth_crap.lm_resp_len = lm_response->length;
 426         }
 427
 428         if (nt_response && nt_response->length) {
 429                 if (nt_response->length > sizeof(request.data.auth_crap.nt_resp)) {
 430                         request.flags = request.flags | WBFLAG_BIG_NTLMV2_BLOB;
 431                         request.extra_len = nt_response->length;
 432                         request.extra_data.data = SMB_MALLOC_ARRAY(char, request.extra_len);
 433                         if (request.extra_data.data == NULL) {
 434                                 return NT_STATUS_NO_MEMORY;
 435                         }
 436                         memcpy(request.extra_data.data, nt_response->data,
 437                                nt_response->length);
 438
 439                 } else {
 440                         memcpy(request.data.auth_crap.nt_resp,
 441                                nt_response->data, nt_response->length);
 442                 }
 443                 request.data.auth_crap.nt_resp_len = nt_response->length;
 444         }
 445
 446         result = winbindd_request_response(WINBINDD_PAM_AUTH_CRAP, &request, &response);
 447         SAFE_FREE(request.extra_data.data);
 448
 449         /* Display response */
 450
 451         if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
 452                 nt_status = NT_STATUS_UNSUCCESSFUL;
 453                 if (error_string)
 454                         *error_string = smb_xstrdup("Reading winbind reply failed!");
 455                 winbindd_free_response(&response);
 456                 return nt_status;
 457         }
 458
 459         nt_status = (NT_STATUS(response.data.auth.nt_status));
 460         if (!NT_STATUS_IS_OK(nt_status)) {
 461                 if (error_string)
 462                         *error_string = smb_xstrdup(response.data.auth.error_string);
 463                 winbindd_free_response(&response);
 464                 return nt_status;
 465         }
 466
 467         if ((flags & WBFLAG_PAM_LMKEY) && lm_key) {
 468                 memcpy(lm_key, response.data.auth.first_8_lm_hash,
 469                        sizeof(response.data.auth.first_8_lm_hash));
 470         }
 471         if ((flags & WBFLAG_PAM_USER_SESSION_KEY) && user_session_key) {
 472                 memcpy(user_session_key, response.data.auth.user_session_key,
 473                         sizeof(response.data.auth.user_session_key));
 474         }
 475
 476         if (flags & WBFLAG_PAM_UNIX_NAME) {
 477                 *unix_name = SMB_STRDUP(response.data.auth.unix_username);
 478                 if (!*unix_name) {
 479                         winbindd_free_response(&response);
 480                         return NT_STATUS_NO_MEMORY;
 481                 }
 482         }
 483
 484         winbindd_free_response(&response);
 485         return nt_status;
 486 }
 487
 488 /* contact server to change user password using auth crap */
 489 static NTSTATUS contact_winbind_change_pswd_auth_crap(const char *username,
 490                                                       const char *domain,
 491                                                       const DATA_BLOB new_nt_pswd,
 492                                                       const DATA_BLOB old_nt_hash_enc,
 493                                                       const DATA_BLOB new_lm_pswd,
 494                                                       const DATA_BLOB old_lm_hash_enc,
 495                                                       char  **error_string)
 496 {
 497         NTSTATUS nt_status;
 498         NSS_STATUS result;
 499         struct winbindd_request request;
 500         struct winbindd_response response;
 501
 502         if (!get_require_membership_sid())
 503         {
 504                 if(error_string)
 505                         *error_string = smb_xstrdup("Can't get membership sid.");
 506                 return NT_STATUS_INVALID_PARAMETER;
 507         }
 508
 509         ZERO_STRUCT(request);
 510         ZERO_STRUCT(response);
 511
 512         if(username != NULL)
 513                 fstrcpy(request.data.chng_pswd_auth_crap.user, username);
 514         if(domain != NULL)
 515                 fstrcpy(request.data.chng_pswd_auth_crap.domain,domain);
 516
 517         if(new_nt_pswd.length)
 518         {
 519                 memcpy(request.data.chng_pswd_auth_crap.new_nt_pswd, new_nt_pswd.data, sizeof(request.data.chng_pswd_auth_crap.new_nt_pswd));
 520                 request.data.chng_pswd_auth_crap.new_nt_pswd_len = new_nt_pswd.length;
 521         }
 522
 523         if(old_nt_hash_enc.length)
 524         {
 525                 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));
 526                 request.data.chng_pswd_auth_crap.old_nt_hash_enc_len = old_nt_hash_enc.length;
 527         }
 528
 529         if(new_lm_pswd.length)
 530         {
 531                 memcpy(request.data.chng_pswd_auth_crap.new_lm_pswd, new_lm_pswd.data, sizeof(request.data.chng_pswd_auth_crap.new_lm_pswd));
 532                 request.data.chng_pswd_auth_crap.new_lm_pswd_len = new_lm_pswd.length;
 533         }
 534
 535         if(old_lm_hash_enc.length)
 536         {
 537                 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));
 538                 request.data.chng_pswd_auth_crap.old_lm_hash_enc_len = old_lm_hash_enc.length;
 539         }
 540
 541         result = winbindd_request_response(WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, &request, &response);
 542
 543         /* Display response */
 544
 545         if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0))
 546         {
 547                 nt_status = NT_STATUS_UNSUCCESSFUL;
 548                 if (error_string)
 549                         *error_string = smb_xstrdup("Reading winbind reply failed!");
 550                 winbindd_free_response(&response);
 551                 return nt_status;
 552         }
 553
 554         nt_status = (NT_STATUS(response.data.auth.nt_status));
 555         if (!NT_STATUS_IS_OK(nt_status))
 556         {
 557                 if (error_string)
 558                         *error_string = smb_xstrdup(response.data.auth.error_string);
 559                 winbindd_free_response(&response);
 560                 return nt_status;
 561         }
 562
 563         winbindd_free_response(&response);
 564
 565     return nt_status;
 566 }
 567
 568 static NTSTATUS winbind_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
 569 {
 570         static const char zeros[16] = { 0, };
 571         NTSTATUS nt_status;
 572         char *error_string = NULL;
 573         uint8 lm_key[8];
 574         uint8 user_sess_key[16];
 575         char *unix_name = NULL;
 576
 577         nt_status = contact_winbind_auth_crap(ntlmssp_state->user, ntlmssp_state->domain,
 578                                               ntlmssp_state->client.netbios_name,
 579                                               &ntlmssp_state->chal,
 580                                               &ntlmssp_state->lm_resp,
 581                                               &ntlmssp_state->nt_resp,
 582                                               WBFLAG_PAM_LMKEY | WBFLAG_PAM_USER_SESSION_KEY | WBFLAG_PAM_UNIX_NAME,
 583                                               lm_key, user_sess_key,
 584                                               &error_string, &unix_name);
 585
 586         if (NT_STATUS_IS_OK(nt_status)) {
 587                 if (memcmp(lm_key, zeros, 8) != 0) {
 588                         *lm_session_key = data_blob_talloc(ntlmssp_state, NULL, 16);
 589                         memcpy(lm_session_key->data, lm_key, 8);
 590                         memset(lm_session_key->data+8, '\0', 8);
 591                 }
 592
 593                 if (memcmp(user_sess_key, zeros, 16) != 0) {
 594                         *user_session_key = data_blob_talloc(ntlmssp_state, user_sess_key, 16);
 595                 }
 596                 ntlmssp_state->callback_private = talloc_strdup(ntlmssp_state,
 597                                                                 unix_name);
 598         } else {
 599                 DEBUG(NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED) ? 0 : 3,
 600                       ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
 601                        ntlmssp_state->domain, ntlmssp_state->user,
 602                        ntlmssp_state->client.netbios_name,
 603                        error_string ? error_string : "unknown error (NULL)"));
 604                 ntlmssp_state->callback_private = NULL;
 605         }
 606
 607         SAFE_FREE(error_string);
 608         SAFE_FREE(unix_name);
 609         return nt_status;
 610 }
 611
 612 static NTSTATUS local_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
 613 {
 614         NTSTATUS nt_status;
 615         struct samr_Password lm_pw, nt_pw;
 616
 617         nt_lm_owf_gen (opt_password, nt_pw.hash, lm_pw.hash);
 618
 619         nt_status = ntlm_password_check(ntlmssp_state,
 620                                         true, true, 0,
 621                                         &ntlmssp_state->chal,
 622                                         &ntlmssp_state->lm_resp,
 623                                         &ntlmssp_state->nt_resp,
 624                                         ntlmssp_state->user,
 625                                         ntlmssp_state->user,
 626                                         ntlmssp_state->domain,
 627                                         &lm_pw, &nt_pw, user_session_key, lm_session_key);
 628
 629         if (NT_STATUS_IS_OK(nt_status)) {
 630                 ntlmssp_state->callback_private = talloc_asprintf(ntlmssp_state,
 631                                                               "%s%c%s", ntlmssp_state->domain,
 632                                                               *lp_winbind_separator(),
 633                                                               ntlmssp_state->user);
 634         } else {
 635                 DEBUG(3, ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
 636                           ntlmssp_state->domain, ntlmssp_state->user,
 637                           ntlmssp_state->client.netbios_name,
 638                           nt_errstr(nt_status)));
 639                 ntlmssp_state->callback_private = NULL;
 640         }
 641         return nt_status;
 642 }
 643
 644 static NTSTATUS ntlm_auth_start_ntlmssp_client(struct ntlmssp_state **client_ntlmssp_state)
 645 {
 646         NTSTATUS status;
 647         if ( (opt_username == NULL) || (opt_domain == NULL) ) {
 648                 status = NT_STATUS_UNSUCCESSFUL;
 649                 DEBUG(1, ("Need username and domain for NTLMSSP\n"));
 650                 return NT_STATUS_INVALID_PARAMETER;
 651         }
 652
 653         status = ntlmssp_client_start(NULL,
 654                                       global_myname(),
 655                                       lp_workgroup(),
 656                                       lp_client_ntlmv2_auth(),
 657                                       client_ntlmssp_state);
 658
 659         if (!NT_STATUS_IS_OK(status)) {
 660                 DEBUG(1, ("Could not start NTLMSSP client: %s\n",
 661                           nt_errstr(status)));
 662                 TALLOC_FREE(*client_ntlmssp_state);
 663                 return status;
 664         }
 665
 666         status = ntlmssp_set_username(*client_ntlmssp_state, opt_username);
 667
 668         if (!NT_STATUS_IS_OK(status)) {
 669                 DEBUG(1, ("Could not set username: %s\n",
 670                           nt_errstr(status)));
 671                 TALLOC_FREE(*client_ntlmssp_state);
 672                 return status;
 673         }
 674
 675         status = ntlmssp_set_domain(*client_ntlmssp_state, opt_domain);
 676
 677         if (!NT_STATUS_IS_OK(status)) {
 678                 DEBUG(1, ("Could not set domain: %s\n",
 679                           nt_errstr(status)));
 680                 TALLOC_FREE(*client_ntlmssp_state);
 681                 return status;
 682         }
 683
 684         if (opt_password) {
 685                 status = ntlmssp_set_password(*client_ntlmssp_state, opt_password);
 686
 687                 if (!NT_STATUS_IS_OK(status)) {
 688                         DEBUG(1, ("Could not set password: %s\n",
 689                                   nt_errstr(status)));
 690                         TALLOC_FREE(*client_ntlmssp_state);
 691                         return status;
 692                 }
 693         }
 694
 695         return NT_STATUS_OK;
 696 }
 697
 698 static NTSTATUS ntlm_auth_start_ntlmssp_server(struct ntlmssp_state **ntlmssp_state)
 699 {
 700         NTSTATUS status;
 701         const char *netbios_name;
 702         const char *netbios_domain;
 703         const char *dns_name;
 704         char *dns_domain;
 705         bool is_standalone = false;
 706
 707         if (opt_password) {
 708                 netbios_name = global_myname();
 709                 netbios_domain = lp_workgroup();
 710         } else {
 711                 netbios_name = get_winbind_netbios_name();
 712                 netbios_domain = get_winbind_domain();
 713         }
 714         /* This should be a 'netbios domain -> DNS domain' mapping */
 715         dns_domain = get_mydnsdomname(talloc_tos());
 716         if (dns_domain) {
 717                 strlower_m(dns_domain);
 718         }
 719         dns_name = get_mydnsfullname();
 720
 721         status = ntlmssp_server_start(NULL,
 722                                       is_standalone,
 723                                       netbios_name,
 724                                       netbios_domain,
 725                                       dns_name,
 726                                       dns_domain,
 727                                       ntlmssp_state);
 728         if (!NT_STATUS_IS_OK(status)) {
 729                 DEBUG(1, ("Could not start NTLMSSP server: %s\n",
 730                           nt_errstr(status)));
 731                 return status;
 732         }
 733
 734         /* Have we been given a local password, or should we ask winbind? */
 735         if (opt_password) {
 736                 (*ntlmssp_state)->check_password = local_pw_check;
 737         } else {
 738                 (*ntlmssp_state)->check_password = winbind_pw_check;
 739         }
 740         return NT_STATUS_OK;
 741 }
 742
 743 /*******************************************************************
 744  Used by firefox to drive NTLM auth to IIS servers.
 745 *******************************************************************/
 746
 747 static NTSTATUS do_ccache_ntlm_auth(DATA_BLOB initial_msg, DATA_BLOB challenge_msg,
 748                                 DATA_BLOB *reply)
 749 {
 750         struct winbindd_request wb_request;
 751         struct winbindd_response wb_response;
 752         int ctrl = 0;
 753         NSS_STATUS result;
 754
 755         /* get winbindd to do the ntlmssp step on our behalf */
 756         ZERO_STRUCT(wb_request);
 757         ZERO_STRUCT(wb_response);
 758
 759         /*
 760          * This is tricky here. If we set krb5_auth in pam_winbind.conf
 761          * creds for users in trusted domain will be stored the winbindd
 762          * child of the trusted domain. If we ask the primary domain for
 763          * ntlm_ccache_auth, it will fail. So, we have to ask the trusted
 764          * domain's child for ccache_ntlm_auth. that is to say, we have to
 765          * set WBFLAG_PAM_CONTACT_TRUSTDOM in request.flags.
 766          */
 767         ctrl = get_pam_winbind_config();
 768
 769         if (ctrl | WINBIND_KRB5_AUTH) {
 770                 wb_request.flags |= WBFLAG_PAM_CONTACT_TRUSTDOM;
 771         }
 772
 773         fstr_sprintf(wb_request.data.ccache_ntlm_auth.user,
 774                 "%s%c%s", opt_domain, winbind_separator(), opt_username);
 775         wb_request.data.ccache_ntlm_auth.uid = geteuid();
 776         wb_request.data.ccache_ntlm_auth.initial_blob_len = initial_msg.length;
 777         wb_request.data.ccache_ntlm_auth.challenge_blob_len = challenge_msg.length;
 778         wb_request.extra_len = initial_msg.length + challenge_msg.length;
 779
 780         if (wb_request.extra_len > 0) {
 781                 wb_request.extra_data.data = SMB_MALLOC_ARRAY(char, wb_request.extra_len);
 782                 if (wb_request.extra_data.data == NULL) {
 783                         return NT_STATUS_NO_MEMORY;
 784                 }
 785
 786                 memcpy(wb_request.extra_data.data, initial_msg.data, initial_msg.length);
 787                 memcpy(wb_request.extra_data.data + initial_msg.length,
 788                         challenge_msg.data, challenge_msg.length);
 789         }
 790
 791         result = winbindd_request_response(WINBINDD_CCACHE_NTLMAUTH, &wb_request, &wb_response);
 792         SAFE_FREE(wb_request.extra_data.data);
 793
 794         if (result != NSS_STATUS_SUCCESS) {
 795                 winbindd_free_response(&wb_response);
 796                 return NT_STATUS_UNSUCCESSFUL;
 797         }
 798
 799         if (reply) {
 800                 *reply = data_blob(wb_response.extra_data.data,
 801                                 wb_response.data.ccache_ntlm_auth.auth_blob_len);
 802                 if (wb_response.data.ccache_ntlm_auth.auth_blob_len > 0 &&
 803                                 reply->data == NULL) {
 804                         winbindd_free_response(&wb_response);
 805                         return NT_STATUS_NO_MEMORY;
 806                 }
 807         }
 808
 809         winbindd_free_response(&wb_response);
 810         return NT_STATUS_MORE_PROCESSING_REQUIRED;
 811 }
 812
 813 static void manage_squid_ntlmssp_request(struct ntlm_auth_state *state,
 814                                                 char *buf, int length)
 815 {
 816         DATA_BLOB request, reply;
 817         NTSTATUS nt_status;
 818
 819         if (strlen(buf) < 2) {
 820                 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
 821                 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
 822                 return;
 823         }
 824
 825         if (strlen(buf) > 3) {
 826                 if(strncmp(buf, "SF ", 3) == 0){
 827                         DEBUG(10, ("Setting flags to negotioate\n"));
 828                         TALLOC_FREE(state->want_feature_list);
 829                         state->want_feature_list = talloc_strdup(state->mem_ctx,
 830                                         buf+3);
 831                         x_fprintf(x_stdout, "OK\n");
 832                         return;
 833                 }
 834                 request = base64_decode_data_blob(buf + 3);
 835         } else {
 836                 request = data_blob_null;
 837         }
 838
 839         if ((strncmp(buf, "PW ", 3) == 0)) {
 840                 /* The calling application wants us to use a local password
 841                  * (rather than winbindd) */
 842
 843                 opt_password = SMB_STRNDUP((const char *)request.data,
 844                                 request.length);
 845
 846                 if (opt_password == NULL) {
 847                         DEBUG(1, ("Out of memory\n"));
 848                         x_fprintf(x_stdout, "BH Out of memory\n");
 849                         data_blob_free(&request);
 850                         return;
 851                 }
 852
 853                 x_fprintf(x_stdout, "OK\n");
 854                 data_blob_free(&request);
 855                 return;
 856         }
 857
 858         if (strncmp(buf, "YR", 2) == 0) {
 859                 TALLOC_FREE(state->ntlmssp_state);
 860                 state->svr_state = SERVER_INITIAL;
 861         } else if (strncmp(buf, "KK", 2) == 0) {
 862                 /* No special preprocessing required */
 863         } else if (strncmp(buf, "GF", 2) == 0) {
 864                 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
 865
 866                 if (state->svr_state == SERVER_FINISHED) {
 867                         x_fprintf(x_stdout, "GF 0x%08x\n", state->neg_flags);
 868                 }
 869                 else {
 870                         x_fprintf(x_stdout, "BH\n");
 871                 }
 872                 data_blob_free(&request);
 873                 return;
 874         } else if (strncmp(buf, "GK", 2) == 0) {
 875                 DEBUG(10, ("Requested NTLMSSP session key\n"));
 876                 if(state->have_session_key) {
 877                         char *key64 = base64_encode_data_blob(state->mem_ctx,
 878                                         state->session_key);
 879                         x_fprintf(x_stdout, "GK %s\n", key64?key64:"<NULL>");
 880                         TALLOC_FREE(key64);
 881                 } else {
 882                         x_fprintf(x_stdout, "BH\n");
 883                 }
 884
 885                 data_blob_free(&request);
 886                 return;
 887         } else {
 888                 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
 889                 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
 890                 return;
 891         }
 892
 893         if (!state->ntlmssp_state) {
 894                 nt_status = ntlm_auth_start_ntlmssp_server(
 895                                 &state->ntlmssp_state);
 896                 if (!NT_STATUS_IS_OK(nt_status)) {
 897                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
 898                         return;
 899                 }
 900                 ntlmssp_want_feature_list(state->ntlmssp_state,
 901                                 state->want_feature_list);
 902         }
 903
 904         DEBUG(10, ("got NTLMSSP packet:\n"));
 905         dump_data(10, request.data, request.length);
 906
 907         nt_status = ntlmssp_update(state->ntlmssp_state, request, &reply);
 908
 909         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 910                 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
 911                                 reply);
 912                 x_fprintf(x_stdout, "TT %s\n", reply_base64);
 913                 TALLOC_FREE(reply_base64);
 914                 data_blob_free(&reply);
 915                 state->svr_state = SERVER_CHALLENGE;
 916                 DEBUG(10, ("NTLMSSP challenge\n"));
 917         } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
 918                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
 919                 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
 920
 921                 TALLOC_FREE(state->ntlmssp_state);
 922         } else if (!NT_STATUS_IS_OK(nt_status)) {
 923                 x_fprintf(x_stdout, "NA %s\n", nt_errstr(nt_status));
 924                 DEBUG(10, ("NTLMSSP %s\n", nt_errstr(nt_status)));
 925         } else {
 926                 x_fprintf(x_stdout, "AF %s\n",
 927                                 (char *)state->ntlmssp_state->callback_private);
 928                 DEBUG(10, ("NTLMSSP OK!\n"));
 929
 930                 if(state->have_session_key)
 931                         data_blob_free(&state->session_key);
 932                 state->session_key = data_blob(
 933                                 state->ntlmssp_state->session_key.data,
 934                                 state->ntlmssp_state->session_key.length);
 935                 state->neg_flags = state->ntlmssp_state->neg_flags;
 936                 state->have_session_key = true;
 937                 state->svr_state = SERVER_FINISHED;
 938         }
 939
 940         data_blob_free(&request);
 941 }
 942
 943 static void manage_client_ntlmssp_request(struct ntlm_auth_state *state,
 944                                                 char *buf, int length)
 945 {
 946         DATA_BLOB request, reply;
 947         NTSTATUS nt_status;
 948
 949         if (!opt_username || !*opt_username) {
 950                 x_fprintf(x_stderr, "username must be specified!\n\n");
 951                 exit(1);
 952         }
 953
 954         if (strlen(buf) < 2) {
 955                 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
 956                 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
 957                 return;
 958         }
 959
 960         if (strlen(buf) > 3) {
 961                 if(strncmp(buf, "SF ", 3) == 0) {
 962                         DEBUG(10, ("Looking for flags to negotiate\n"));
 963                         talloc_free(state->want_feature_list);
 964                         state->want_feature_list = talloc_strdup(state->mem_ctx,
 965                                         buf+3);
 966                         x_fprintf(x_stdout, "OK\n");
 967                         return;
 968                 }
 969                 request = base64_decode_data_blob(buf + 3);
 970         } else {
 971                 request = data_blob_null;
 972         }
 973
 974         if (strncmp(buf, "PW ", 3) == 0) {
 975                 /* We asked for a password and obviously got it :-) */
 976
 977                 opt_password = SMB_STRNDUP((const char *)request.data,
 978                                 request.length);
 979
 980                 if (opt_password == NULL) {
 981                         DEBUG(1, ("Out of memory\n"));
 982                         x_fprintf(x_stdout, "BH Out of memory\n");
 983                         data_blob_free(&request);
 984                         return;
 985                 }
 986
 987                 x_fprintf(x_stdout, "OK\n");
 988                 data_blob_free(&request);
 989                 return;
 990         }
 991
 992         if (!state->ntlmssp_state && use_cached_creds) {
 993                 /* check whether cached credentials are usable. */
 994                 DATA_BLOB empty_blob = data_blob_null;
 995
 996                 nt_status = do_ccache_ntlm_auth(empty_blob, empty_blob, NULL);
 997                 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 998                         /* failed to use cached creds */
 999                         use_cached_creds = False;
1000                 }
1001         }
1002
1003         if (opt_password == NULL && !use_cached_creds) {
1004                 /* Request a password from the calling process.  After
1005                    sending it, the calling process should retry asking for the
1006                    negotiate. */
1007
1008                 DEBUG(10, ("Requesting password\n"));
1009                 x_fprintf(x_stdout, "PW\n");
1010                 return;
1011         }
1012
1013         if (strncmp(buf, "YR", 2) == 0) {
1014                 TALLOC_FREE(state->ntlmssp_state);
1015                 state->cli_state = CLIENT_INITIAL;
1016         } else if (strncmp(buf, "TT", 2) == 0) {
1017                 /* No special preprocessing required */
1018         } else if (strncmp(buf, "GF", 2) == 0) {
1019                 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
1020
1021                 if(state->cli_state == CLIENT_FINISHED) {
1022                         x_fprintf(x_stdout, "GF 0x%08x\n", state->neg_flags);
1023                 }
1024                 else {
1025                         x_fprintf(x_stdout, "BH\n");
1026                 }
1027
1028                 data_blob_free(&request);
1029                 return;
1030         } else if (strncmp(buf, "GK", 2) == 0 ) {
1031                 DEBUG(10, ("Requested session key\n"));
1032
1033                 if(state->cli_state == CLIENT_FINISHED) {
1034                         char *key64 = base64_encode_data_blob(state->mem_ctx,
1035                                         state->session_key);
1036                         x_fprintf(x_stdout, "GK %s\n", key64?key64:"<NULL>");
1037                         TALLOC_FREE(key64);
1038                 }
1039                 else {
1040                         x_fprintf(x_stdout, "BH\n");
1041                 }
1042
1043                 data_blob_free(&request);
1044                 return;
1045         } else {
1046                 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
1047                 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
1048                 return;
1049         }
1050
1051         if (!state->ntlmssp_state) {
1052                 nt_status = ntlm_auth_start_ntlmssp_client(
1053                                 &state->ntlmssp_state);
1054                 if (!NT_STATUS_IS_OK(nt_status)) {
1055                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
1056                         return;
1057                 }
1058                 ntlmssp_want_feature_list(state->ntlmssp_state,
1059                                 state->want_feature_list);
1060                 state->initial_message = data_blob_null;
1061         }
1062
1063         DEBUG(10, ("got NTLMSSP packet:\n"));
1064         dump_data(10, request.data, request.length);
1065
1066         if (use_cached_creds && !opt_password &&
1067                         (state->cli_state == CLIENT_RESPONSE)) {
1068                 nt_status = do_ccache_ntlm_auth(state->initial_message, request,
1069                                 &reply);
1070         } else {
1071                 nt_status = ntlmssp_update(state->ntlmssp_state, request,
1072                                 &reply);
1073         }
1074
1075         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1076                 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
1077                                 reply);
1078                 if (state->cli_state == CLIENT_INITIAL) {
1079                         x_fprintf(x_stdout, "YR %s\n", reply_base64);
1080                         state->initial_message = reply;
1081                         state->cli_state = CLIENT_RESPONSE;
1082                 } else {
1083                         x_fprintf(x_stdout, "KK %s\n", reply_base64);
1084                         data_blob_free(&reply);
1085                 }
1086                 TALLOC_FREE(reply_base64);
1087                 DEBUG(10, ("NTLMSSP challenge\n"));
1088         } else if (NT_STATUS_IS_OK(nt_status)) {
1089                 char *reply_base64 = base64_encode_data_blob(talloc_tos(),
1090                                 reply);
1091                 x_fprintf(x_stdout, "AF %s\n", reply_base64);
1092                 TALLOC_FREE(reply_base64);
1093
1094                 if(state->have_session_key)
1095                         data_blob_free(&state->session_key);
1096
1097                 state->session_key = data_blob(
1098                                 state->ntlmssp_state->session_key.data,
1099                                 state->ntlmssp_state->session_key.length);
1100                 state->neg_flags = state->ntlmssp_state->neg_flags;
1101                 state->have_session_key = true;
1102
1103                 DEBUG(10, ("NTLMSSP OK!\n"));
1104                 state->cli_state = CLIENT_FINISHED;
1105                 TALLOC_FREE(state->ntlmssp_state);
1106         } else {
1107                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
1108                 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
1109                 state->cli_state = CLIENT_ERROR;
1110                 TALLOC_FREE(state->ntlmssp_state);
1111         }
1112
1113         data_blob_free(&request);
1114 }
1115
1116 static void manage_squid_basic_request(struct ntlm_auth_state *state,
1117                                         char *buf, int length)
1118 {
1119         char *user, *pass;
1120         user=buf;
1121
1122         pass=(char *)memchr(buf,' ',length);
1123         if (!pass) {
1124                 DEBUG(2, ("Password not found. Denying access\n"));
1125                 x_fprintf(x_stdout, "ERR\n");
1126                 return;
1127         }
1128         *pass='\0';
1129         pass++;
1130
1131         if (state->helper_mode == SQUID_2_5_BASIC) {
1132                 rfc1738_unescape(user);
1133                 rfc1738_unescape(pass);
1134         }
1135
1136         if (check_plaintext_auth(user, pass, False)) {
1137                 x_fprintf(x_stdout, "OK\n");
1138         } else {
1139                 x_fprintf(x_stdout, "ERR\n");
1140         }
1141 }
1142
1143 static void offer_gss_spnego_mechs(void) {
1144
1145         DATA_BLOB token;
1146         struct spnego_data spnego;
1147         ssize_t len;
1148         char *reply_base64;
1149         TALLOC_CTX *ctx = talloc_tos();
1150         char *principal;
1151         char *myname_lower;
1152
1153         ZERO_STRUCT(spnego);
1154
1155         myname_lower = talloc_strdup(ctx, global_myname());
1156         if (!myname_lower) {
1157                 return;
1158         }
1159         strlower_m(myname_lower);
1160
1161         principal = talloc_asprintf(ctx, "%s$@%s", myname_lower, lp_realm());
1162         if (!principal) {
1163                 return;
1164         }
1165
1166         /* Server negTokenInit (mech offerings) */
1167         spnego.type = SPNEGO_NEG_TOKEN_INIT;
1168         spnego.negTokenInit.mechTypes = talloc_array(ctx, const char *, 3);
1169 #ifdef HAVE_KRB5
1170         spnego.negTokenInit.mechTypes[0] = talloc_strdup(ctx, OID_KERBEROS5_OLD);
1171         spnego.negTokenInit.mechTypes[1] = talloc_strdup(ctx, OID_NTLMSSP);
1172         spnego.negTokenInit.mechTypes[2] = NULL;
1173 #else
1174         spnego.negTokenInit.mechTypes[0] = talloc_strdup(ctx, OID_NTLMSSP);
1175         spnego.negTokenInit.mechTypes[1] = NULL;
1176 #endif
1177
1178
1179         spnego.negTokenInit.mechListMIC = data_blob_talloc(ctx, principal,
1180                                                     strlen(principal));
1181
1182         len = spnego_write_data(ctx, &token, &spnego);
1183         spnego_free_data(&spnego);
1184
1185         if (len == -1) {
1186                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1187                 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1188                 return;
1189         }
1190
1191         reply_base64 = base64_encode_data_blob(talloc_tos(), token);
1192         x_fprintf(x_stdout, "TT %s *\n", reply_base64);
1193
1194         TALLOC_FREE(reply_base64);
1195         data_blob_free(&token);
1196         DEBUG(10, ("sent SPNEGO negTokenInit\n"));
1197         return;
1198 }
1199
1200 static void manage_gss_spnego_request(struct ntlm_auth_state *state,
1201                                         char *buf, int length)
1202 {
1203         static struct ntlmssp_state *ntlmssp_state = NULL;
1204         struct spnego_data request, response;
1205         DATA_BLOB token;
1206         NTSTATUS status;
1207         ssize_t len;
1208         TALLOC_CTX *ctx = talloc_tos();
1209
1210         char *user = NULL;
1211         char *domain = NULL;
1212
1213         const char *reply_code;
1214         char       *reply_base64;
1215         char *reply_argument = NULL;
1216
1217         if (strlen(buf) < 2) {
1218                 DEBUG(1, ("SPENGO query [%s] invalid\n", buf));
1219                 x_fprintf(x_stdout, "BH SPENGO query invalid\n");
1220                 return;
1221         }
1222
1223         if (strncmp(buf, "YR", 2) == 0) {
1224                 TALLOC_FREE(ntlmssp_state);
1225         } else if (strncmp(buf, "KK", 2) == 0) {
1226                 ;
1227         } else {
1228                 DEBUG(1, ("SPENGO query [%s] invalid\n", buf));
1229                 x_fprintf(x_stdout, "BH SPENGO query invalid\n");
1230                 return;
1231         }
1232
1233         if ( (strlen(buf) == 2)) {
1234
1235                 /* no client data, get the negTokenInit offering
1236                    mechanisms */
1237
1238                 offer_gss_spnego_mechs();
1239                 return;
1240         }
1241
1242         /* All subsequent requests have a blob. This might be negTokenInit or negTokenTarg */
1243
1244         if (strlen(buf) <= 3) {
1245                 DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
1246                 x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
1247                 return;
1248         }
1249
1250         token = base64_decode_data_blob(buf + 3);
1251         len = spnego_read_data(ctx, token, &request);
1252         data_blob_free(&token);
1253
1254         if (len == -1) {
1255                 DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
1256                 x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
1257                 return;
1258         }
1259
1260         if (request.type == SPNEGO_NEG_TOKEN_INIT) {
1261
1262                 /* Second request from Client. This is where the
1263                    client offers its mechanism to use. */
1264
1265                 if ( (request.negTokenInit.mechTypes == NULL) ||
1266                      (request.negTokenInit.mechTypes[0] == NULL) ) {
1267                         DEBUG(1, ("Client did not offer any mechanism\n"));
1268                         x_fprintf(x_stdout, "BH Client did not offer any "
1269                                             "mechanism\n");
1270                         return;
1271                 }
1272
1273                 status = NT_STATUS_UNSUCCESSFUL;
1274                 if (strcmp(request.negTokenInit.mechTypes[0], OID_NTLMSSP) == 0) {
1275
1276                         if ( request.negTokenInit.mechToken.data == NULL ) {
1277                                 DEBUG(1, ("Client did not provide NTLMSSP data\n"));
1278                                 x_fprintf(x_stdout, "BH Client did not provide "
1279                                                     "NTLMSSP data\n");
1280                                 return;
1281                         }
1282
1283                         if ( ntlmssp_state != NULL ) {
1284                                 DEBUG(1, ("Client wants a new NTLMSSP challenge, but "
1285                                           "already got one\n"));
1286                                 x_fprintf(x_stdout, "BH Client wants a new "
1287                                                     "NTLMSSP challenge, but "
1288                                                     "already got one\n");
1289                                 TALLOC_FREE(ntlmssp_state);
1290                                 return;
1291                         }
1292
1293                         if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
1294                                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1295                                 return;
1296                         }
1297
1298                         DEBUG(10, ("got NTLMSSP packet:\n"));
1299                         dump_data(10, request.negTokenInit.mechToken.data,
1300                                   request.negTokenInit.mechToken.length);
1301
1302                         response.type = SPNEGO_NEG_TOKEN_TARG;
1303                         response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_NTLMSSP);
1304                         response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1305
1306                         status = ntlmssp_update(ntlmssp_state,
1307                                                        request.negTokenInit.mechToken,
1308                                                        &response.negTokenTarg.responseToken);
1309                 }
1310
1311 #ifdef HAVE_KRB5
1312                 if (strcmp(request.negTokenInit.mechTypes[0], OID_KERBEROS5_OLD) == 0) {
1313
1314                         TALLOC_CTX *mem_ctx = talloc_init("manage_gss_spnego_request");
1315                         char *principal;
1316                         DATA_BLOB ap_rep;
1317                         DATA_BLOB session_key;
1318                         struct PAC_LOGON_INFO *logon_info = NULL;
1319
1320                         if ( request.negTokenInit.mechToken.data == NULL ) {
1321                                 DEBUG(1, ("Client did not provide Kerberos data\n"));
1322                                 x_fprintf(x_stdout, "BH Client did not provide "
1323                                                     "Kerberos data\n");
1324                                 return;
1325                         }
1326
1327                         response.type = SPNEGO_NEG_TOKEN_TARG;
1328                         response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_KERBEROS5_OLD);
1329                         response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1330                         response.negTokenTarg.responseToken = data_blob_talloc(ctx, NULL, 0);
1331
1332                         status = ads_verify_ticket(mem_ctx, lp_realm(), 0,
1333                                                    &request.negTokenInit.mechToken,
1334                                                    &principal, &logon_info, &ap_rep,
1335                                                    &session_key, True);
1336
1337                         /* Now in "principal" we have the name we are
1338                            authenticated as. */
1339
1340                         if (NT_STATUS_IS_OK(status)) {
1341
1342                                 domain = strchr_m(principal, '@');
1343
1344                                 if (domain == NULL) {
1345                                         DEBUG(1, ("Did not get a valid principal "
1346                                                   "from ads_verify_ticket\n"));
1347                                         x_fprintf(x_stdout, "BH Did not get a "
1348                                                   "valid principal from "
1349                                                   "ads_verify_ticket\n");
1350                                         return;
1351                                 }
1352
1353                                 *domain++ = '\0';
1354                                 domain = SMB_STRDUP(domain);
1355                                 user = SMB_STRDUP(principal);
1356
1357                                 data_blob_free(&ap_rep);
1358                         }
1359
1360                         TALLOC_FREE(mem_ctx);
1361                 }
1362 #endif
1363
1364         } else {
1365
1366                 if ( (request.negTokenTarg.supportedMech == NULL) ||
1367                      ( strcmp(request.negTokenTarg.supportedMech, OID_NTLMSSP) != 0 ) ) {
1368                         /* Kerberos should never send a negTokenTarg, OID_NTLMSSP
1369                            is the only one we support that sends this stuff */
1370                         DEBUG(1, ("Got a negTokenTarg for something non-NTLMSSP: %s\n",
1371                                   request.negTokenTarg.supportedMech));
1372                         x_fprintf(x_stdout, "BH Got a negTokenTarg for "
1373                                             "something non-NTLMSSP\n");
1374                         return;
1375                 }
1376
1377                 if (request.negTokenTarg.responseToken.data == NULL) {
1378                         DEBUG(1, ("Got a negTokenTarg without a responseToken!\n"));
1379                         x_fprintf(x_stdout, "BH Got a negTokenTarg without a "
1380                                             "responseToken!\n");
1381                         return;
1382                 }
1383
1384                 status = ntlmssp_update(ntlmssp_state,
1385                                                request.negTokenTarg.responseToken,
1386                                                &response.negTokenTarg.responseToken);
1387
1388                 response.type = SPNEGO_NEG_TOKEN_TARG;
1389                 response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_NTLMSSP);
1390                 response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1391
1392                 if (NT_STATUS_IS_OK(status)) {
1393                         user = SMB_STRDUP(ntlmssp_state->user);
1394                         domain = SMB_STRDUP(ntlmssp_state->domain);
1395                         TALLOC_FREE(ntlmssp_state);
1396                 }
1397         }
1398
1399         spnego_free_data(&request);
1400
1401         if (NT_STATUS_IS_OK(status)) {
1402                 response.negTokenTarg.negResult = SPNEGO_ACCEPT_COMPLETED;
1403                 reply_code = "AF";
1404                 reply_argument = talloc_asprintf(ctx, "%s\\%s", domain, user);
1405         } else if (NT_STATUS_EQUAL(status,
1406                                    NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1407                 response.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1408                 reply_code = "TT";
1409                 reply_argument = talloc_strdup(ctx, "*");
1410         } else {
1411                 response.negTokenTarg.negResult = SPNEGO_REJECT;
1412                 reply_code = "NA";
1413                 reply_argument = talloc_strdup(ctx, nt_errstr(status));
1414         }
1415
1416         if (!reply_argument) {
1417                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1418                 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1419                 return;
1420         }
1421
1422         SAFE_FREE(user);
1423         SAFE_FREE(domain);
1424
1425         len = spnego_write_data(ctx, &token, &response);
1426         spnego_free_data(&response);
1427
1428         if (len == -1) {
1429                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1430                 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1431                 return;
1432         }
1433
1434         reply_base64 = base64_encode_data_blob(talloc_tos(), token);
1435
1436         x_fprintf(x_stdout, "%s %s %s\n",
1437                   reply_code, reply_base64, reply_argument);
1438
1439         TALLOC_FREE(reply_base64);
1440         data_blob_free(&token);
1441
1442         return;
1443 }
1444
1445 static struct ntlmssp_state *client_ntlmssp_state = NULL;
1446
1447 static bool manage_client_ntlmssp_init(struct spnego_data spnego)
1448 {
1449         NTSTATUS status;
1450         DATA_BLOB null_blob = data_blob_null;
1451         DATA_BLOB to_server;
1452         char *to_server_base64;
1453         const char *my_mechs[] = {OID_NTLMSSP, NULL};
1454         TALLOC_CTX *ctx = talloc_tos();
1455
1456         DEBUG(10, ("Got spnego negTokenInit with NTLMSSP\n"));
1457
1458         if (client_ntlmssp_state != NULL) {
1459                 DEBUG(1, ("Request for initial SPNEGO request where "
1460                           "we already have a state\n"));
1461                 return False;
1462         }
1463
1464         if (!client_ntlmssp_state) {
1465                 if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_client(&client_ntlmssp_state))) {
1466                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1467                         return False;
1468                 }
1469         }
1470
1471
1472         if (opt_password == NULL) {
1473
1474                 /* Request a password from the calling process.  After
1475                    sending it, the calling process should retry with
1476                    the negTokenInit. */
1477
1478                 DEBUG(10, ("Requesting password\n"));
1479                 x_fprintf(x_stdout, "PW\n");
1480                 return True;
1481         }
1482
1483         spnego.type = SPNEGO_NEG_TOKEN_INIT;
1484         spnego.negTokenInit.mechTypes = my_mechs;
1485         spnego.negTokenInit.reqFlags = data_blob_null;
1486         spnego.negTokenInit.reqFlagsPadding = 0;
1487         spnego.negTokenInit.mechListMIC = null_blob;
1488
1489         status = ntlmssp_update(client_ntlmssp_state, null_blob,
1490                                        &spnego.negTokenInit.mechToken);
1491
1492         if ( !(NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) ||
1493                         NT_STATUS_IS_OK(status)) ) {
1494                 DEBUG(1, ("Expected OK or MORE_PROCESSING_REQUIRED, got: %s\n",
1495                           nt_errstr(status)));
1496                 TALLOC_FREE(client_ntlmssp_state);
1497                 return False;
1498         }
1499
1500         spnego_write_data(ctx, &to_server, &spnego);
1501         data_blob_free(&spnego.negTokenInit.mechToken);
1502
1503         to_server_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1504         data_blob_free(&to_server);
1505         x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1506         TALLOC_FREE(to_server_base64);
1507         return True;
1508 }
1509
1510 static void manage_client_ntlmssp_targ(struct spnego_data spnego)
1511 {
1512         NTSTATUS status;
1513         DATA_BLOB null_blob = data_blob_null;
1514         DATA_BLOB request;
1515         DATA_BLOB to_server;
1516         char *to_server_base64;
1517         TALLOC_CTX *ctx = talloc_tos();
1518
1519         DEBUG(10, ("Got spnego negTokenTarg with NTLMSSP\n"));
1520
1521         if (client_ntlmssp_state == NULL) {
1522                 DEBUG(1, ("Got NTLMSSP tArg without a client state\n"));
1523                 x_fprintf(x_stdout, "BH Got NTLMSSP tArg without a client state\n");
1524                 return;
1525         }
1526
1527         if (spnego.negTokenTarg.negResult == SPNEGO_REJECT) {
1528                 x_fprintf(x_stdout, "NA\n");
1529                 TALLOC_FREE(client_ntlmssp_state);
1530                 return;
1531         }
1532
1533         if (spnego.negTokenTarg.negResult == SPNEGO_ACCEPT_COMPLETED) {
1534                 x_fprintf(x_stdout, "AF\n");
1535                 TALLOC_FREE(client_ntlmssp_state);
1536                 return;
1537         }
1538
1539         status = ntlmssp_update(client_ntlmssp_state,
1540                                        spnego.negTokenTarg.responseToken,
1541                                        &request);
1542
1543         if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1544                 DEBUG(1, ("Expected MORE_PROCESSING_REQUIRED from "
1545                           "ntlmssp_client_update, got: %s\n",
1546                           nt_errstr(status)));
1547                 x_fprintf(x_stdout, "BH Expected MORE_PROCESSING_REQUIRED from "
1548                                     "ntlmssp_client_update\n");
1549                 data_blob_free(&request);
1550                 TALLOC_FREE(client_ntlmssp_state);
1551                 return;
1552         }
1553
1554         spnego.type = SPNEGO_NEG_TOKEN_TARG;
1555         spnego.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1556         spnego.negTokenTarg.supportedMech = (char *)OID_NTLMSSP;
1557         spnego.negTokenTarg.responseToken = request;
1558         spnego.negTokenTarg.mechListMIC = null_blob;
1559
1560         spnego_write_data(ctx, &to_server, &spnego);
1561         data_blob_free(&request);
1562
1563         to_server_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1564         data_blob_free(&to_server);
1565         x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1566         TALLOC_FREE(to_server_base64);
1567         return;
1568 }
1569
1570 #ifdef HAVE_KRB5
1571
1572 static bool manage_client_krb5_init(struct spnego_data spnego)
1573 {
1574         char *principal;
1575         DATA_BLOB tkt, to_server;
1576         DATA_BLOB session_key_krb5 = data_blob_null;
1577         struct spnego_data reply;
1578         char *reply_base64;
1579         int retval;
1580
1581         const char *my_mechs[] = {OID_KERBEROS5_OLD, NULL};
1582         ssize_t len;
1583         TALLOC_CTX *ctx = talloc_tos();
1584
1585         if ( (spnego.negTokenInit.mechListMIC.data == NULL) ||
1586              (spnego.negTokenInit.mechListMIC.length == 0) ) {
1587                 DEBUG(1, ("Did not get a principal for krb5\n"));
1588                 return False;
1589         }
1590
1591         principal = (char *)SMB_MALLOC(
1592                 spnego.negTokenInit.mechListMIC.length+1);
1593
1594         if (principal == NULL) {
1595                 DEBUG(1, ("Could not malloc principal\n"));
1596                 return False;
1597         }
1598
1599         memcpy(principal, spnego.negTokenInit.mechListMIC.data,
1600                spnego.negTokenInit.mechListMIC.length);
1601         principal[spnego.negTokenInit.mechListMIC.length] = '\0';
1602
1603         retval = cli_krb5_get_ticket(ctx, principal, 0,
1604                                           &tkt, &session_key_krb5,
1605                                           0, NULL, NULL, NULL);
1606         if (retval) {
1607                 char *user = NULL;
1608
1609                 /* Let's try to first get the TGT, for that we need a
1610                    password. */
1611
1612                 if (opt_password == NULL) {
1613                         DEBUG(10, ("Requesting password\n"));
1614                         x_fprintf(x_stdout, "PW\n");
1615                         return True;
1616                 }
1617
1618                 user = talloc_asprintf(talloc_tos(), "%s@%s", opt_username, opt_domain);
1619                 if (!user) {
1620                         return false;
1621                 }
1622
1623                 if ((retval = kerberos_kinit_password(user, opt_password, 0, NULL))) {
1624                         DEBUG(10, ("Requesting TGT failed: %s\n", error_message(retval)));
1625                         return False;
1626                 }
1627
1628                 retval = cli_krb5_get_ticket(ctx, principal, 0,
1629                                                   &tkt, &session_key_krb5,
1630                                                   0, NULL, NULL, NULL);
1631                 if (retval) {
1632                         DEBUG(10, ("Kinit suceeded, but getting a ticket failed: %s\n", error_message(retval)));
1633                         return False;
1634                 }
1635         }
1636
1637         data_blob_free(&session_key_krb5);
1638
1639         ZERO_STRUCT(reply);
1640
1641         reply.type = SPNEGO_NEG_TOKEN_INIT;
1642         reply.negTokenInit.mechTypes = my_mechs;
1643         reply.negTokenInit.reqFlags = data_blob_null;
1644         reply.negTokenInit.reqFlagsPadding = 0;
1645         reply.negTokenInit.mechToken = tkt;
1646         reply.negTokenInit.mechListMIC = data_blob_null;
1647
1648         len = spnego_write_data(ctx, &to_server, &reply);
1649         data_blob_free(&tkt);
1650
1651         if (len == -1) {
1652                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1653                 return False;
1654         }
1655
1656         reply_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1657         x_fprintf(x_stdout, "KK %s *\n", reply_base64);
1658
1659         TALLOC_FREE(reply_base64);
1660         data_blob_free(&to_server);
1661         DEBUG(10, ("sent GSS-SPNEGO KERBEROS5 negTokenInit\n"));
1662         return True;
1663 }
1664
1665 static void manage_client_krb5_targ(struct spnego_data spnego)
1666 {
1667         switch (spnego.negTokenTarg.negResult) {
1668         case SPNEGO_ACCEPT_INCOMPLETE:
1669                 DEBUG(1, ("Got a Kerberos negTokenTarg with ACCEPT_INCOMPLETE\n"));
1670                 x_fprintf(x_stdout, "BH Got a Kerberos negTokenTarg with "
1671                                     "ACCEPT_INCOMPLETE\n");
1672                 break;
1673         case SPNEGO_ACCEPT_COMPLETED:
1674                 DEBUG(10, ("Accept completed\n"));
1675                 x_fprintf(x_stdout, "AF\n");
1676                 break;
1677         case SPNEGO_REJECT:
1678                 DEBUG(10, ("Rejected\n"));
1679                 x_fprintf(x_stdout, "NA\n");
1680                 break;
1681         default:
1682                 DEBUG(1, ("Got an invalid negTokenTarg\n"));
1683                 x_fprintf(x_stdout, "AF\n");
1684         }
1685 }
1686
1687 #endif
1688
1689 static void manage_gss_spnego_client_request(struct ntlm_auth_state *state,
1690                                                 char *buf, int length)
1691 {
1692         DATA_BLOB request;
1693         struct spnego_data spnego;
1694         ssize_t len;
1695         TALLOC_CTX *ctx = talloc_tos();
1696
1697         if (!opt_username || !*opt_username) {
1698                 x_fprintf(x_stderr, "username must be specified!\n\n");
1699                 exit(1);
1700         }
1701
1702         if (strlen(buf) <= 3) {
1703                 DEBUG(1, ("SPNEGO query [%s] too short\n", buf));
1704                 x_fprintf(x_stdout, "BH SPNEGO query too short\n");
1705                 return;
1706         }
1707
1708         request = base64_decode_data_blob(buf+3);
1709
1710         if (strncmp(buf, "PW ", 3) == 0) {
1711
1712                 /* We asked for a password and obviously got it :-) */
1713
1714                 opt_password = SMB_STRNDUP((const char *)request.data, request.length);
1715
1716                 if (opt_password == NULL) {
1717                         DEBUG(1, ("Out of memory\n"));
1718                         x_fprintf(x_stdout, "BH Out of memory\n");
1719                         data_blob_free(&request);
1720                         return;
1721                 }
1722
1723                 x_fprintf(x_stdout, "OK\n");
1724                 data_blob_free(&request);
1725                 return;
1726         }
1727
1728         if ( (strncmp(buf, "TT ", 3) != 0) &&
1729              (strncmp(buf, "AF ", 3) != 0) &&
1730              (strncmp(buf, "NA ", 3) != 0) ) {
1731                 DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
1732                 x_fprintf(x_stdout, "BH SPNEGO request invalid\n");
1733                 data_blob_free(&request);
1734                 return;
1735         }
1736
1737         /* So we got a server challenge to generate a SPNEGO
1738            client-to-server request... */
1739
1740         len = spnego_read_data(ctx, request, &spnego);
1741         data_blob_free(&request);
1742
1743         if (len == -1) {
1744                 DEBUG(1, ("Could not read SPNEGO data for [%s]\n", buf));
1745                 x_fprintf(x_stdout, "BH Could not read SPNEGO data\n");
1746                 return;
1747         }
1748
1749         if (spnego.type == SPNEGO_NEG_TOKEN_INIT) {
1750
1751                 /* The server offers a list of mechanisms */
1752
1753                 const char **mechType = (const char **)spnego.negTokenInit.mechTypes;
1754
1755                 while (*mechType != NULL) {
1756
1757 #ifdef HAVE_KRB5
1758                         if ( (strcmp(*mechType, OID_KERBEROS5_OLD) == 0) ||
1759                              (strcmp(*mechType, OID_KERBEROS5) == 0) ) {
1760                                 if (manage_client_krb5_init(spnego))
1761                                         goto out;
1762                         }
1763 #endif
1764
1765                         if (strcmp(*mechType, OID_NTLMSSP) == 0) {
1766                                 if (manage_client_ntlmssp_init(spnego))
1767                                         goto out;
1768                         }
1769
1770                         mechType++;
1771                 }
1772
1773                 DEBUG(1, ("Server offered no compatible mechanism\n"));
1774                 x_fprintf(x_stdout, "BH Server offered no compatible mechanism\n");
1775                 return;
1776         }
1777
1778         if (spnego.type == SPNEGO_NEG_TOKEN_TARG) {
1779
1780                 if (spnego.negTokenTarg.supportedMech == NULL) {
1781                         /* On accept/reject Windows does not send the
1782                            mechanism anymore. Handle that here and
1783                            shut down the mechanisms. */
1784
1785                         switch (spnego.negTokenTarg.negResult) {
1786                         case SPNEGO_ACCEPT_COMPLETED:
1787                                 x_fprintf(x_stdout, "AF\n");
1788                                 break;
1789                         case SPNEGO_REJECT:
1790                                 x_fprintf(x_stdout, "NA\n");
1791                                 break;
1792                         default:
1793                                 DEBUG(1, ("Got a negTokenTarg with no mech and an "
1794                                           "unknown negResult: %d\n",
1795                                           spnego.negTokenTarg.negResult));
1796                                 x_fprintf(x_stdout, "BH Got a negTokenTarg with"
1797                                                     " no mech and an unknown "
1798                                                     "negResult\n");
1799                         }
1800
1801                         TALLOC_FREE(client_ntlmssp_state);
1802                         goto out;
1803                 }
1804
1805                 if (strcmp(spnego.negTokenTarg.supportedMech,
1806                            OID_NTLMSSP) == 0) {
1807                         manage_client_ntlmssp_targ(spnego);
1808                         goto out;
1809                 }
1810
1811 #if HAVE_KRB5
1812                 if (strcmp(spnego.negTokenTarg.supportedMech,
1813                            OID_KERBEROS5_OLD) == 0) {
1814                         manage_client_krb5_targ(spnego);
1815                         goto out;
1816                 }
1817 #endif
1818
1819         }
1820
1821         DEBUG(1, ("Got an SPNEGO token I could not handle [%s]!\n", buf));
1822         x_fprintf(x_stdout, "BH Got an SPNEGO token I could not handle\n");
1823         return;
1824
1825  out:
1826         spnego_free_data(&spnego);
1827         return;
1828 }
1829
1830 static void manage_ntlm_server_1_request(struct ntlm_auth_state *state,
1831                                                 char *buf, int length)
1832 {
1833         char *request, *parameter;
1834         static DATA_BLOB challenge;
1835         static DATA_BLOB lm_response;
1836         static DATA_BLOB nt_response;
1837         static char *full_username;
1838         static char *username;
1839         static char *domain;
1840         static char *plaintext_password;
1841         static bool ntlm_server_1_user_session_key;
1842         static bool ntlm_server_1_lm_session_key;
1843
1844         if (strequal(buf, ".")) {
1845                 if (!full_username && !username) {
1846                         x_fprintf(x_stdout, "Error: No username supplied!\n");
1847                 } else if (plaintext_password) {
1848                         /* handle this request as plaintext */
1849                         if (!full_username) {
1850                                 if (asprintf(&full_username, "%s%c%s", domain, winbind_separator(), username) == -1) {
1851                                         x_fprintf(x_stdout, "Error: Out of memory in asprintf!\n.\n");
1852                                         return;
1853                                 }
1854                         }
1855                         if (check_plaintext_auth(full_username, plaintext_password, False)) {
1856                                 x_fprintf(x_stdout, "Authenticated: Yes\n");
1857                         } else {
1858                                 x_fprintf(x_stdout, "Authenticated: No\n");
1859                         }
1860                 } else if (!lm_response.data && !nt_response.data) {
1861                         x_fprintf(x_stdout, "Error: No password supplied!\n");
1862                 } else if (!challenge.data) {
1863                         x_fprintf(x_stdout, "Error: No lanman-challenge supplied!\n");
1864                 } else {
1865                         char *error_string = NULL;
1866                         uchar lm_key[8];
1867                         uchar user_session_key[16];
1868                         uint32 flags = 0;
1869
1870                         if (full_username && !username) {
1871                                 fstring fstr_user;
1872                                 fstring fstr_domain;
1873
1874                                 if (!parse_ntlm_auth_domain_user(full_username, fstr_user, fstr_domain)) {
1875                                         /* username might be 'tainted', don't print into our new-line deleimianted stream */
1876                                         x_fprintf(x_stdout, "Error: Could not parse into domain and username\n");
1877                                 }
1878                                 SAFE_FREE(username);
1879                                 SAFE_FREE(domain);
1880                                 username = smb_xstrdup(fstr_user);
1881                                 domain = smb_xstrdup(fstr_domain);
1882                         }
1883
1884                         if (!domain) {
1885                                 domain = smb_xstrdup(get_winbind_domain());
1886                         }
1887
1888                         if (ntlm_server_1_lm_session_key)
1889                                 flags |= WBFLAG_PAM_LMKEY;
1890
1891                         if (ntlm_server_1_user_session_key)
1892                                 flags |= WBFLAG_PAM_USER_SESSION_KEY;
1893
1894                         if (!NT_STATUS_IS_OK(
1895                                     contact_winbind_auth_crap(username,
1896                                                               domain,
1897                                                               global_myname(),
1898                                                               &challenge,
1899                                                               &lm_response,
1900                                                               &nt_response,
1901                                                               flags,
1902                                                               lm_key,
1903                                                               user_session_key,
1904                                                               &error_string,
1905                                                               NULL))) {
1906
1907                                 x_fprintf(x_stdout, "Authenticated: No\n");
1908                                 x_fprintf(x_stdout, "Authentication-Error: %s\n.\n", error_string);
1909                         } else {
1910                                 static char zeros[16];
1911                                 char *hex_lm_key;
1912                                 char *hex_user_session_key;
1913
1914                                 x_fprintf(x_stdout, "Authenticated: Yes\n");
1915
1916                                 if (ntlm_server_1_lm_session_key
1917                                     && (memcmp(zeros, lm_key,
1918                                                sizeof(lm_key)) != 0)) {
1919                                         hex_lm_key = hex_encode_talloc(NULL,
1920                                                                 (const unsigned char *)lm_key,
1921                                                                 sizeof(lm_key));
1922                                         x_fprintf(x_stdout, "LANMAN-Session-Key: %s\n", hex_lm_key);
1923                                         TALLOC_FREE(hex_lm_key);
1924                                 }
1925
1926                                 if (ntlm_server_1_user_session_key
1927                                     && (memcmp(zeros, user_session_key,
1928                                                sizeof(user_session_key)) != 0)) {
1929                                         hex_user_session_key = hex_encode_talloc(NULL,
1930                                                                           (const unsigned char *)user_session_key,
1931                                                                           sizeof(user_session_key));
1932                                         x_fprintf(x_stdout, "User-Session-Key: %s\n", hex_user_session_key);
1933                                         TALLOC_FREE(hex_user_session_key);
1934                                 }
1935                         }
1936                         SAFE_FREE(error_string);
1937                 }
1938                 /* clear out the state */
1939                 challenge = data_blob_null;
1940                 nt_response = data_blob_null;
1941                 lm_response = data_blob_null;
1942                 SAFE_FREE(full_username);
1943                 SAFE_FREE(username);
1944                 SAFE_FREE(domain);
1945                 SAFE_FREE(plaintext_password);
1946                 ntlm_server_1_user_session_key = False;
1947                 ntlm_server_1_lm_session_key = False;
1948                 x_fprintf(x_stdout, ".\n");
1949
1950                 return;
1951         }
1952
1953         request = buf;
1954
1955         /* Indicates a base64 encoded structure */
1956         parameter = strstr_m(request, ":: ");
1957         if (!parameter) {
1958                 parameter = strstr_m(request, ": ");
1959
1960                 if (!parameter) {
1961                         DEBUG(0, ("Parameter not found!\n"));
1962                         x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
1963                         return;
1964                 }
1965
1966                 parameter[0] ='\0';
1967                 parameter++;
1968                 parameter[0] ='\0';
1969                 parameter++;
1970
1971         } else {
1972                 parameter[0] ='\0';
1973                 parameter++;
1974                 parameter[0] ='\0';
1975                 parameter++;
1976                 parameter[0] ='\0';
1977                 parameter++;
1978
1979                 base64_decode_inplace(parameter);
1980         }
1981
1982         if (strequal(request, "LANMAN-Challenge")) {
1983                 challenge = strhex_to_data_blob(NULL, parameter);
1984                 if (challenge.length != 8) {
1985                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 8)\n.\n",
1986                                   parameter,
1987                                   (int)challenge.length);
1988                         challenge = data_blob_null;
1989                 }
1990         } else if (strequal(request, "NT-Response")) {
1991                 nt_response = strhex_to_data_blob(NULL, parameter);
1992                 if (nt_response.length < 24) {
1993                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (only got %d bytes, needed at least 24)\n.\n",
1994                                   parameter,
1995                                   (int)nt_response.length);
1996                         nt_response = data_blob_null;
1997                 }
1998         } else if (strequal(request, "LANMAN-Response")) {
1999                 lm_response = strhex_to_data_blob(NULL, parameter);
2000                 if (lm_response.length != 24) {
2001                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 24)\n.\n",
2002                                   parameter,
2003                                   (int)lm_response.length);
2004                         lm_response = data_blob_null;
2005                 }
2006         } else if (strequal(request, "Password")) {
2007                 plaintext_password = smb_xstrdup(parameter);
2008         } else if (strequal(request, "NT-Domain")) {
2009                 domain = smb_xstrdup(parameter);
2010         } else if (strequal(request, "Username")) {
2011                 username = smb_xstrdup(parameter);
2012         } else if (strequal(request, "Full-Username")) {
2013                 full_username = smb_xstrdup(parameter);
2014         } else if (strequal(request, "Request-User-Session-Key")) {
2015                 ntlm_server_1_user_session_key = strequal(parameter, "Yes");
2016         } else if (strequal(request, "Request-LanMan-Session-Key")) {
2017                 ntlm_server_1_lm_session_key = strequal(parameter, "Yes");
2018         } else {
2019                 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
2020         }
2021 }
2022
2023 static void manage_ntlm_change_password_1_request(struct ntlm_auth_state *state,
2024                                                         char *buf, int length)
2025 {
2026         char *request, *parameter;
2027         static DATA_BLOB new_nt_pswd;
2028         static DATA_BLOB old_nt_hash_enc;
2029         static DATA_BLOB new_lm_pswd;
2030         static DATA_BLOB old_lm_hash_enc;
2031         static char *full_username = NULL;
2032         static char *username = NULL;
2033         static char *domain = NULL;
2034         static char *newpswd =  NULL;
2035         static char *oldpswd = NULL;
2036
2037         if (strequal(buf, ".")) {
2038                 if(newpswd && oldpswd) {
2039                         uchar old_nt_hash[16];
2040                         uchar old_lm_hash[16];
2041                         uchar new_nt_hash[16];
2042                         uchar new_lm_hash[16];
2043
2044                         new_nt_pswd = data_blob(NULL, 516);
2045                         old_nt_hash_enc = data_blob(NULL, 16);
2046
2047                         /* Calculate the MD4 hash (NT compatible) of the
2048                          * password */
2049                         E_md4hash(oldpswd, old_nt_hash);
2050                         E_md4hash(newpswd, new_nt_hash);
2051
2052                         /* E_deshash returns false for 'long'
2053                            passwords (> 14 DOS chars).
2054
2055                            Therefore, don't send a buffer
2056                            encrypted with the truncated hash
2057                            (it could allow an even easier
2058                            attack on the password)
2059
2060                            Likewise, obey the admin's restriction
2061                         */
2062
2063                         if (lp_client_lanman_auth() &&
2064                             E_deshash(newpswd, new_lm_hash) &&
2065                             E_deshash(oldpswd, old_lm_hash)) {
2066                                 new_lm_pswd = data_blob(NULL, 516);
2067                                 old_lm_hash_enc = data_blob(NULL, 16);
2068                                 encode_pw_buffer(new_lm_pswd.data, newpswd,
2069                                                  STR_UNICODE);
2070
2071                                 arcfour_crypt(new_lm_pswd.data, old_nt_hash, 516);
2072                                 E_old_pw_hash(new_nt_hash, old_lm_hash,
2073                                               old_lm_hash_enc.data);
2074                         } else {
2075                                 new_lm_pswd.data = NULL;
2076                                 new_lm_pswd.length = 0;
2077                                 old_lm_hash_enc.data = NULL;
2078                                 old_lm_hash_enc.length = 0;
2079                         }
2080
2081                         encode_pw_buffer(new_nt_pswd.data, newpswd,
2082                                          STR_UNICODE);
2083
2084                         arcfour_crypt(new_nt_pswd.data, old_nt_hash, 516);
2085                         E_old_pw_hash(new_nt_hash, old_nt_hash,
2086                                       old_nt_hash_enc.data);
2087                 }
2088
2089                 if (!full_username && !username) {
2090                         x_fprintf(x_stdout, "Error: No username supplied!\n");
2091                 } else if ((!new_nt_pswd.data || !old_nt_hash_enc.data) &&
2092                            (!new_lm_pswd.data || old_lm_hash_enc.data) ) {
2093                         x_fprintf(x_stdout, "Error: No NT or LM password "
2094                                   "blobs supplied!\n");
2095                 } else {
2096                         char *error_string = NULL;
2097
2098                         if (full_username && !username) {
2099                                 fstring fstr_user;
2100                                 fstring fstr_domain;
2101
2102                                 if (!parse_ntlm_auth_domain_user(full_username,
2103                                                                  fstr_user,
2104                                                                  fstr_domain)) {
2105                                         /* username might be 'tainted', don't
2106                                          * print into our new-line
2107                                          * deleimianted stream */
2108                                         x_fprintf(x_stdout, "Error: Could not "
2109                                                   "parse into domain and "
2110                                                   "username\n");
2111                                         SAFE_FREE(username);
2112                                         username = smb_xstrdup(full_username);
2113                                 } else {
2114                                         SAFE_FREE(username);
2115                                         SAFE_FREE(domain);
2116                                         username = smb_xstrdup(fstr_user);
2117                                         domain = smb_xstrdup(fstr_domain);
2118                                 }
2119
2120                         }
2121
2122                         if(!NT_STATUS_IS_OK(contact_winbind_change_pswd_auth_crap(
2123                                                     username, domain,
2124                                                     new_nt_pswd,
2125                                                     old_nt_hash_enc,
2126                                                     new_lm_pswd,
2127                                                     old_lm_hash_enc,
2128                                                     &error_string))) {
2129                                 x_fprintf(x_stdout, "Password-Change: No\n");
2130                                 x_fprintf(x_stdout, "Password-Change-Error: "
2131                                           "%s\n.\n", error_string);
2132                         } else {
2133                                 x_fprintf(x_stdout, "Password-Change: Yes\n");
2134                         }
2135
2136                         SAFE_FREE(error_string);
2137                 }
2138                 /* clear out the state */
2139                 new_nt_pswd = data_blob_null;
2140                 old_nt_hash_enc = data_blob_null;
2141                 new_lm_pswd = data_blob_null;
2142                 old_nt_hash_enc = data_blob_null;
2143                 SAFE_FREE(full_username);
2144                 SAFE_FREE(username);
2145                 SAFE_FREE(domain);
2146                 SAFE_FREE(newpswd);
2147                 SAFE_FREE(oldpswd);
2148                 x_fprintf(x_stdout, ".\n");
2149
2150                 return;
2151         }
2152
2153         request = buf;
2154
2155         /* Indicates a base64 encoded structure */
2156         parameter = strstr_m(request, ":: ");
2157         if (!parameter) {
2158                 parameter = strstr_m(request, ": ");
2159
2160                 if (!parameter) {
2161                         DEBUG(0, ("Parameter not found!\n"));
2162                         x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
2163                         return;
2164                 }
2165
2166                 parameter[0] ='\0';
2167                 parameter++;
2168                 parameter[0] ='\0';
2169                 parameter++;
2170         } else {
2171                 parameter[0] ='\0';
2172                 parameter++;
2173                 parameter[0] ='\0';
2174                 parameter++;
2175                 parameter[0] ='\0';
2176                 parameter++;
2177
2178                 base64_decode_inplace(parameter);
2179         }
2180
2181         if (strequal(request, "new-nt-password-blob")) {
2182                 new_nt_pswd = strhex_to_data_blob(NULL, parameter);
2183                 if (new_nt_pswd.length != 516) {
2184                         x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2185                                   "(got %d bytes, expected 516)\n.\n",
2186                                   parameter,
2187                                   (int)new_nt_pswd.length);
2188                         new_nt_pswd = data_blob_null;
2189                 }
2190         } else if (strequal(request, "old-nt-hash-blob")) {
2191                 old_nt_hash_enc = strhex_to_data_blob(NULL, parameter);
2192                 if (old_nt_hash_enc.length != 16) {
2193                         x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2194                                   "(got %d bytes, expected 16)\n.\n",
2195                                   parameter,
2196                                   (int)old_nt_hash_enc.length);
2197                         old_nt_hash_enc = data_blob_null;
2198                 }
2199         } else if (strequal(request, "new-lm-password-blob")) {
2200                 new_lm_pswd = strhex_to_data_blob(NULL, parameter);
2201                 if (new_lm_pswd.length != 516) {
2202                         x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2203                                   "(got %d bytes, expected 516)\n.\n",
2204                                   parameter,
2205                                   (int)new_lm_pswd.length);
2206                         new_lm_pswd = data_blob_null;
2207                 }
2208         }
2209         else if (strequal(request, "old-lm-hash-blob")) {
2210                 old_lm_hash_enc = strhex_to_data_blob(NULL, parameter);
2211                 if (old_lm_hash_enc.length != 16)
2212                 {
2213                         x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2214                                   "(got %d bytes, expected 16)\n.\n",
2215                                   parameter,
2216                                   (int)old_lm_hash_enc.length);
2217                         old_lm_hash_enc = data_blob_null;
2218                 }
2219         } else if (strequal(request, "nt-domain")) {
2220                 domain = smb_xstrdup(parameter);
2221         } else if(strequal(request, "username")) {
2222                 username = smb_xstrdup(parameter);
2223         } else if(strequal(request, "full-username")) {
2224                 username = smb_xstrdup(parameter);
2225         } else if(strequal(request, "new-password")) {
2226                 newpswd = smb_xstrdup(parameter);
2227         } else if (strequal(request, "old-password")) {
2228                 oldpswd = smb_xstrdup(parameter);
2229         } else {
2230                 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
2231         }
2232 }
2233
2234 static void manage_squid_request(struct ntlm_auth_state *state,
2235                 stdio_helper_function fn)
2236 {
2237         char *buf;
2238         char tmp[INITIAL_BUFFER_SIZE+1];
2239         int length, buf_size = 0;
2240         char *c;
2241
2242         buf = talloc_strdup(state->mem_ctx, "");
2243         if (!buf) {
2244                 DEBUG(0, ("Failed to allocate input buffer.\n"));
2245                 x_fprintf(x_stderr, "ERR\n");
2246                 exit(1);
2247         }
2248
2249         do {
2250
2251                 /* this is not a typo - x_fgets doesn't work too well under
2252                  * squid */
2253                 if (fgets(tmp, sizeof(tmp)-1, stdin) == NULL) {
2254                         if (ferror(stdin)) {
2255                                 DEBUG(1, ("fgets() failed! dying..... errno=%d "
2256                                           "(%s)\n", ferror(stdin),
2257                                           strerror(ferror(stdin))));
2258
2259                                 exit(1);
2260                         }
2261                         exit(0);
2262                 }
2263
2264                 buf = talloc_strdup_append_buffer(buf, tmp);
2265                 buf_size += INITIAL_BUFFER_SIZE;
2266
2267                 if (buf_size > MAX_BUFFER_SIZE) {
2268                         DEBUG(2, ("Oversized message\n"));
2269                         x_fprintf(x_stderr, "ERR\n");
2270                         talloc_free(buf);
2271                         return;
2272                 }
2273
2274                 c = strchr(buf, '\n');
2275         } while (c == NULL);
2276
2277         *c = '\0';
2278         length = c-buf;
2279
2280         DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
2281
2282         if (buf[0] == '\0') {
2283                 DEBUG(2, ("Invalid Request\n"));
2284                 x_fprintf(x_stderr, "ERR\n");
2285                 talloc_free(buf);
2286                 return;
2287         }
2288
2289         fn(state, buf, length);
2290         talloc_free(buf);
2291 }
2292
2293
2294 static void squid_stream(enum stdio_helper_mode stdio_mode, stdio_helper_function fn) {
2295         TALLOC_CTX *mem_ctx;
2296         struct ntlm_auth_state *state;
2297
2298         /* initialize FDescs */
2299         x_setbuf(x_stdout, NULL);
2300         x_setbuf(x_stderr, NULL);
2301
2302         mem_ctx = talloc_init("ntlm_auth");
2303         if (!mem_ctx) {
2304                 DEBUG(0, ("squid_stream: Failed to create talloc context\n"));
2305                 x_fprintf(x_stderr, "ERR\n");
2306                 exit(1);
2307         }
2308
2309         state = talloc_zero(mem_ctx, struct ntlm_auth_state);
2310         if (!state) {
2311                 DEBUG(0, ("squid_stream: Failed to talloc ntlm_auth_state\n"));
2312                 x_fprintf(x_stderr, "ERR\n");
2313                 exit(1);
2314         }
2315
2316         state->mem_ctx = mem_ctx;
2317         state->helper_mode = stdio_mode;
2318
2319         while(1) {
2320                 manage_squid_request(state, fn);
2321         }
2322 }
2323
2324
2325 /* Authenticate a user with a challenge/response */
2326
2327 static bool check_auth_crap(void)
2328 {
2329         NTSTATUS nt_status;
2330         uint32 flags = 0;
2331         char lm_key[8];
2332         char user_session_key[16];
2333         char *hex_lm_key;
2334         char *hex_user_session_key;
2335         char *error_string;
2336         static uint8 zeros[16];
2337
2338         x_setbuf(x_stdout, NULL);
2339
2340         if (request_lm_key)
2341                 flags |= WBFLAG_PAM_LMKEY;
2342
2343         if (request_user_session_key)
2344                 flags |= WBFLAG_PAM_USER_SESSION_KEY;
2345
2346         flags |= WBFLAG_PAM_NT_STATUS_SQUASH;
2347
2348         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
2349                                               opt_workstation,
2350                                               &opt_challenge,
2351                                               &opt_lm_response,
2352                                               &opt_nt_response,
2353                                               flags,
2354                                               (unsigned char *)lm_key,
2355                                               (unsigned char *)user_session_key,
2356                                               &error_string, NULL);
2357
2358         if (!NT_STATUS_IS_OK(nt_status)) {
2359                 x_fprintf(x_stdout, "%s (0x%x)\n",
2360                           error_string,
2361                           NT_STATUS_V(nt_status));
2362                 SAFE_FREE(error_string);
2363                 return False;
2364         }
2365
2366         if (request_lm_key
2367             && (memcmp(zeros, lm_key,
2368                        sizeof(lm_key)) != 0)) {
2369                 hex_lm_key = hex_encode_talloc(talloc_tos(), (const unsigned char *)lm_key,
2370                                         sizeof(lm_key));
2371                 x_fprintf(x_stdout, "LM_KEY: %s\n", hex_lm_key);
2372                 TALLOC_FREE(hex_lm_key);
2373         }
2374         if (request_user_session_key
2375             && (memcmp(zeros, user_session_key,
2376                        sizeof(user_session_key)) != 0)) {
2377                 hex_user_session_key = hex_encode_talloc(talloc_tos(), (const unsigned char *)user_session_key,
2378                                                   sizeof(user_session_key));
2379                 x_fprintf(x_stdout, "NT_KEY: %s\n", hex_user_session_key);
2380                 TALLOC_FREE(hex_user_session_key);
2381         }
2382
2383         return True;
2384 }
2385
2386 /* Main program */
2387
2388 enum {
2389         OPT_USERNAME = 1000,
2390         OPT_DOMAIN,
2391         OPT_WORKSTATION,
2392         OPT_CHALLENGE,
2393         OPT_RESPONSE,
2394         OPT_LM,
2395         OPT_NT,
2396         OPT_PASSWORD,
2397         OPT_LM_KEY,
2398         OPT_USER_SESSION_KEY,
2399         OPT_DIAGNOSTICS,
2400         OPT_REQUIRE_MEMBERSHIP,
2401         OPT_USE_CACHED_CREDS,
2402         OPT_PAM_WINBIND_CONF
2403 };
2404
2405  int main(int argc, const char **argv)
2406 {
2407         TALLOC_CTX *frame = talloc_stackframe();
2408         int opt;
2409         static const char *helper_protocol;
2410         static int diagnostics;
2411
2412         static const char *hex_challenge;
2413         static const char *hex_lm_response;
2414         static const char *hex_nt_response;
2415
2416         poptContext pc;
2417
2418         /* NOTE: DO NOT change this interface without considering the implications!
2419            This is an external interface, which other programs will use to interact
2420            with this helper.
2421         */
2422
2423         /* We do not use single-letter command abbreviations, because they harm future
2424            interface stability. */
2425
2426         struct poptOption long_options[] = {
2427                 POPT_AUTOHELP
2428                 { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
2429                 { "username", 0, POPT_ARG_STRING, &opt_username, OPT_USERNAME, "username"},
2430                 { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
2431                 { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
2432                 { "challenge", 0, POPT_ARG_STRING, &hex_challenge, OPT_CHALLENGE, "challenge (HEX encoded)"},
2433                 { "lm-response", 0, POPT_ARG_STRING, &hex_lm_response, OPT_LM, "LM Response to the challenge (HEX encoded)"},
2434                 { "nt-response", 0, POPT_ARG_STRING, &hex_nt_response, OPT_NT, "NT or NTLMv2 Response to the challenge (HEX encoded)"},
2435                 { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
2436                 { "request-lm-key", 0, POPT_ARG_NONE, &request_lm_key, OPT_LM_KEY, "Retrieve LM session key"},
2437                 { "request-nt-key", 0, POPT_ARG_NONE, &request_user_session_key, OPT_USER_SESSION_KEY, "Retrieve User (NT) session key"},
2438                 { "use-cached-creds", 0, POPT_ARG_NONE, &use_cached_creds, OPT_USE_CACHED_CREDS, "Use cached credentials if no password is given"},
2439                 { "diagnostics", 0, POPT_ARG_NONE, &diagnostics,
2440                   OPT_DIAGNOSTICS,
2441                   "Perform diagnostics on the authentication chain"},
2442                 { "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" },
2443                 { "pam-winbind-conf", 0, POPT_ARG_STRING, &opt_pam_winbind_conf, OPT_PAM_WINBIND_CONF, "Require that request must set WBFLAG_PAM_CONTACT_TRUSTDOM when krb5 auth is required" },
2444                 POPT_COMMON_CONFIGFILE
2445                 POPT_COMMON_VERSION
2446                 POPT_TABLEEND
2447         };
2448
2449         /* Samba client initialisation */
2450         load_case_tables();
2451
2452         dbf = x_stderr;
2453
2454         /* Parse options */
2455
2456         pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
2457
2458         /* Parse command line options */
2459
2460         if (argc == 1) {
2461                 poptPrintHelp(pc, stderr, 0);
2462                 return 1;
2463         }
2464
2465         while((opt = poptGetNextOpt(pc)) != -1) {
2466                 /* Get generic config options like --configfile */
2467         }
2468
2469         poptFreeContext(pc);
2470
2471         if (!lp_load(get_dyn_CONFIGFILE(), True, False, False, True)) {
2472                 d_fprintf(stderr, "ntlm_auth: error opening config file %s. Error was %s\n",
2473                         get_dyn_CONFIGFILE(), strerror(errno));
2474                 exit(1);
2475         }
2476
2477         pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
2478                             POPT_CONTEXT_KEEP_FIRST);
2479
2480         while((opt = poptGetNextOpt(pc)) != -1) {
2481                 switch (opt) {
2482                 case OPT_CHALLENGE:
2483                         opt_challenge = strhex_to_data_blob(NULL, hex_challenge);
2484                         if (opt_challenge.length != 8) {
2485                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2486                                           hex_challenge,
2487                                           (int)opt_challenge.length);
2488                                 exit(1);
2489                         }
2490                         break;
2491                 case OPT_LM:
2492                         opt_lm_response = strhex_to_data_blob(NULL, hex_lm_response);
2493                         if (opt_lm_response.length != 24) {
2494                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2495                                           hex_lm_response,
2496                                           (int)opt_lm_response.length);
2497                                 exit(1);
2498                         }
2499                         break;
2500
2501                 case OPT_NT:
2502                         opt_nt_response = strhex_to_data_blob(NULL, hex_nt_response);
2503                         if (opt_nt_response.length < 24) {
2504                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2505                                           hex_nt_response,
2506                                           (int)opt_nt_response.length);
2507                                 exit(1);
2508                         }
2509                         break;
2510
2511                 case OPT_REQUIRE_MEMBERSHIP:
2512                         if (StrnCaseCmp("S-", require_membership_of, 2) == 0) {
2513                                 require_membership_of_sid = require_membership_of;
2514                         }
2515                         break;
2516                 }
2517         }
2518
2519         if (opt_username) {
2520                 char *domain = SMB_STRDUP(opt_username);
2521                 char *p = strchr_m(domain, *lp_winbind_separator());
2522                 if (p) {
2523                         opt_username = p+1;
2524                         *p = '\0';
2525                         if (opt_domain && !strequal(opt_domain, domain)) {
2526                                 x_fprintf(x_stderr, "Domain specified in username (%s) "
2527                                         "doesn't match specified domain (%s)!\n\n",
2528                                         domain, opt_domain);
2529                                 poptPrintHelp(pc, stderr, 0);
2530                                 exit(1);
2531                         }
2532                         opt_domain = domain;
2533                 } else {
2534                         SAFE_FREE(domain);
2535                 }
2536         }
2537
2538         /* Note: if opt_domain is "" then send no domain */
2539         if (opt_domain == NULL) {
2540                 opt_domain = get_winbind_domain();
2541         }
2542
2543         if (opt_workstation == NULL) {
2544                 opt_workstation = "";
2545         }
2546
2547         if (helper_protocol) {
2548                 int i;
2549                 for (i=0; i<NUM_HELPER_MODES; i++) {
2550                         if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
2551                                 squid_stream(stdio_helper_protocols[i].mode, stdio_helper_protocols[i].fn);
2552                                 exit(0);
2553                         }
2554                 }
2555                 x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol);
2556
2557                 for (i=0; i<NUM_HELPER_MODES; i++) {
2558                         x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name);
2559                 }
2560
2561                 exit(1);
2562         }
2563
2564         if (!opt_username || !*opt_username) {
2565                 x_fprintf(x_stderr, "username must be specified!\n\n");
2566                 poptPrintHelp(pc, stderr, 0);
2567                 exit(1);
2568         }
2569
2570         if (opt_challenge.length) {
2571                 if (!check_auth_crap()) {
2572                         exit(1);
2573                 }
2574                 exit(0);
2575         }
2576
2577         if (!opt_password) {
2578                 opt_password = getpass("password: ");
2579         }
2580
2581         if (diagnostics) {
2582                 if (!diagnose_ntlm_auth()) {
2583                         return 1;
2584                 }
2585         } else {
2586                 fstring user;
2587
2588                 fstr_sprintf(user, "%s%c%s", opt_domain, winbind_separator(), opt_username);
2589                 if (!check_plaintext_auth(user, opt_password, True)) {
2590                         return 1;
2591                 }
2592         }
2593
2594         /* Exit code */
2595
2596         poptFreeContext(pc);
2597         TALLOC_FREE(frame);
2598         return 0;
2599 }