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, TALLOC_CTX *mem_ctx,
 569                                  DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
 570 {
 571         static const char zeros[16] = { 0, };
 572         NTSTATUS nt_status;
 573         char *error_string = NULL;
 574         uint8 lm_key[8];
 575         uint8 user_sess_key[16];
 576         char *unix_name = NULL;
 577
 578         nt_status = contact_winbind_auth_crap(ntlmssp_state->user, ntlmssp_state->domain,
 579                                               ntlmssp_state->client.netbios_name,
 580                                               &ntlmssp_state->chal,
 581                                               &ntlmssp_state->lm_resp,
 582                                               &ntlmssp_state->nt_resp,
 583                                               WBFLAG_PAM_LMKEY | WBFLAG_PAM_USER_SESSION_KEY | WBFLAG_PAM_UNIX_NAME,
 584                                               lm_key, user_sess_key,
 585                                               &error_string, &unix_name);
 586
 587         if (NT_STATUS_IS_OK(nt_status)) {
 588                 if (memcmp(lm_key, zeros, 8) != 0) {
 589                         *lm_session_key = data_blob_talloc(mem_ctx, NULL, 16);
 590                         memcpy(lm_session_key->data, lm_key, 8);
 591                         memset(lm_session_key->data+8, '\0', 8);
 592                 }
 593
 594                 if (memcmp(user_sess_key, zeros, 16) != 0) {
 595                         *user_session_key = data_blob_talloc(mem_ctx, user_sess_key, 16);
 596                 }
 597                 ntlmssp_state->callback_private = talloc_strdup(ntlmssp_state,
 598                                                                 unix_name);
 599         } else {
 600                 DEBUG(NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED) ? 0 : 3,
 601                       ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
 602                        ntlmssp_state->domain, ntlmssp_state->user,
 603                        ntlmssp_state->client.netbios_name,
 604                        error_string ? error_string : "unknown error (NULL)"));
 605                 ntlmssp_state->callback_private = NULL;
 606         }
 607
 608         SAFE_FREE(error_string);
 609         SAFE_FREE(unix_name);
 610         return nt_status;
 611 }
 612
 613 static NTSTATUS local_pw_check(struct ntlmssp_state *ntlmssp_state, TALLOC_CTX *mem_ctx,
 614                                DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
 615 {
 616         NTSTATUS nt_status;
 617         struct samr_Password lm_pw, nt_pw;
 618
 619         nt_lm_owf_gen (opt_password, nt_pw.hash, lm_pw.hash);
 620
 621         nt_status = ntlm_password_check(mem_ctx,
 622                                         true, true, 0,
 623                                         &ntlmssp_state->chal,
 624                                         &ntlmssp_state->lm_resp,
 625                                         &ntlmssp_state->nt_resp,
 626                                         ntlmssp_state->user,
 627                                         ntlmssp_state->user,
 628                                         ntlmssp_state->domain,
 629                                         &lm_pw, &nt_pw, user_session_key, lm_session_key);
 630
 631         if (NT_STATUS_IS_OK(nt_status)) {
 632                 ntlmssp_state->callback_private = talloc_asprintf(ntlmssp_state,
 633                                                               "%s%c%s", ntlmssp_state->domain,
 634                                                               *lp_winbind_separator(),
 635                                                               ntlmssp_state->user);
 636         } else {
 637                 DEBUG(3, ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
 638                           ntlmssp_state->domain, ntlmssp_state->user,
 639                           ntlmssp_state->client.netbios_name,
 640                           nt_errstr(nt_status)));
 641                 ntlmssp_state->callback_private = NULL;
 642         }
 643         return nt_status;
 644 }
 645
 646 static NTSTATUS ntlm_auth_start_ntlmssp_client(struct ntlmssp_state **client_ntlmssp_state)
 647 {
 648         NTSTATUS status;
 649         if ( (opt_username == NULL) || (opt_domain == NULL) ) {
 650                 status = NT_STATUS_UNSUCCESSFUL;
 651                 DEBUG(1, ("Need username and domain for NTLMSSP\n"));
 652                 return NT_STATUS_INVALID_PARAMETER;
 653         }
 654
 655         status = ntlmssp_client_start(NULL,
 656                                       global_myname(),
 657                                       lp_workgroup(),
 658                                       lp_client_ntlmv2_auth(),
 659                                       client_ntlmssp_state);
 660
 661         if (!NT_STATUS_IS_OK(status)) {
 662                 DEBUG(1, ("Could not start NTLMSSP client: %s\n",
 663                           nt_errstr(status)));
 664                 TALLOC_FREE(*client_ntlmssp_state);
 665                 return status;
 666         }
 667
 668         status = ntlmssp_set_username(*client_ntlmssp_state, opt_username);
 669
 670         if (!NT_STATUS_IS_OK(status)) {
 671                 DEBUG(1, ("Could not set username: %s\n",
 672                           nt_errstr(status)));
 673                 TALLOC_FREE(*client_ntlmssp_state);
 674                 return status;
 675         }
 676
 677         status = ntlmssp_set_domain(*client_ntlmssp_state, opt_domain);
 678
 679         if (!NT_STATUS_IS_OK(status)) {
 680                 DEBUG(1, ("Could not set domain: %s\n",
 681                           nt_errstr(status)));
 682                 TALLOC_FREE(*client_ntlmssp_state);
 683                 return status;
 684         }
 685
 686         if (opt_password) {
 687                 status = ntlmssp_set_password(*client_ntlmssp_state, opt_password);
 688
 689                 if (!NT_STATUS_IS_OK(status)) {
 690                         DEBUG(1, ("Could not set password: %s\n",
 691                                   nt_errstr(status)));
 692                         TALLOC_FREE(*client_ntlmssp_state);
 693                         return status;
 694                 }
 695         }
 696
 697         return NT_STATUS_OK;
 698 }
 699
 700 static NTSTATUS ntlm_auth_start_ntlmssp_server(struct ntlmssp_state **ntlmssp_state)
 701 {
 702         NTSTATUS status;
 703         const char *netbios_name;
 704         const char *netbios_domain;
 705         const char *dns_name;
 706         char *dns_domain;
 707         bool is_standalone = false;
 708
 709         if (opt_password) {
 710                 netbios_name = global_myname();
 711                 netbios_domain = lp_workgroup();
 712         } else {
 713                 netbios_name = get_winbind_netbios_name();
 714                 netbios_domain = get_winbind_domain();
 715         }
 716         /* This should be a 'netbios domain -> DNS domain' mapping */
 717         dns_domain = get_mydnsdomname(talloc_tos());
 718         if (dns_domain) {
 719                 strlower_m(dns_domain);
 720         }
 721         dns_name = get_mydnsfullname();
 722
 723         status = ntlmssp_server_start(NULL,
 724                                       is_standalone,
 725                                       netbios_name,
 726                                       netbios_domain,
 727                                       dns_name,
 728                                       dns_domain,
 729                                       ntlmssp_state);
 730         if (!NT_STATUS_IS_OK(status)) {
 731                 DEBUG(1, ("Could not start NTLMSSP server: %s\n",
 732                           nt_errstr(status)));
 733                 return status;
 734         }
 735
 736         /* Have we been given a local password, or should we ask winbind? */
 737         if (opt_password) {
 738                 (*ntlmssp_state)->check_password = local_pw_check;
 739         } else {
 740                 (*ntlmssp_state)->check_password = winbind_pw_check;
 741         }
 742         return NT_STATUS_OK;
 743 }
 744
 745 /*******************************************************************
 746  Used by firefox to drive NTLM auth to IIS servers.
 747 *******************************************************************/
 748
 749 static NTSTATUS do_ccache_ntlm_auth(DATA_BLOB initial_msg, DATA_BLOB challenge_msg,
 750                                 DATA_BLOB *reply)
 751 {
 752         struct winbindd_request wb_request;
 753         struct winbindd_response wb_response;
 754         int ctrl = 0;
 755         NSS_STATUS result;
 756
 757         /* get winbindd to do the ntlmssp step on our behalf */
 758         ZERO_STRUCT(wb_request);
 759         ZERO_STRUCT(wb_response);
 760
 761         /*
 762          * This is tricky here. If we set krb5_auth in pam_winbind.conf
 763          * creds for users in trusted domain will be stored the winbindd
 764          * child of the trusted domain. If we ask the primary domain for
 765          * ntlm_ccache_auth, it will fail. So, we have to ask the trusted
 766          * domain's child for ccache_ntlm_auth. that is to say, we have to
 767          * set WBFLAG_PAM_CONTACT_TRUSTDOM in request.flags.
 768          */
 769         ctrl = get_pam_winbind_config();
 770
 771         if (ctrl | WINBIND_KRB5_AUTH) {
 772                 wb_request.flags |= WBFLAG_PAM_CONTACT_TRUSTDOM;
 773         }
 774
 775         fstr_sprintf(wb_request.data.ccache_ntlm_auth.user,
 776                 "%s%c%s", opt_domain, winbind_separator(), opt_username);
 777         wb_request.data.ccache_ntlm_auth.uid = geteuid();
 778         wb_request.data.ccache_ntlm_auth.initial_blob_len = initial_msg.length;
 779         wb_request.data.ccache_ntlm_auth.challenge_blob_len = challenge_msg.length;
 780         wb_request.extra_len = initial_msg.length + challenge_msg.length;
 781
 782         if (wb_request.extra_len > 0) {
 783                 wb_request.extra_data.data = SMB_MALLOC_ARRAY(char, wb_request.extra_len);
 784                 if (wb_request.extra_data.data == NULL) {
 785                         return NT_STATUS_NO_MEMORY;
 786                 }
 787
 788                 memcpy(wb_request.extra_data.data, initial_msg.data, initial_msg.length);
 789                 memcpy(wb_request.extra_data.data + initial_msg.length,
 790                         challenge_msg.data, challenge_msg.length);
 791         }
 792
 793         result = winbindd_request_response(WINBINDD_CCACHE_NTLMAUTH, &wb_request, &wb_response);
 794         SAFE_FREE(wb_request.extra_data.data);
 795
 796         if (result != NSS_STATUS_SUCCESS) {
 797                 winbindd_free_response(&wb_response);
 798                 return NT_STATUS_UNSUCCESSFUL;
 799         }
 800
 801         if (reply) {
 802                 *reply = data_blob(wb_response.extra_data.data,
 803                                 wb_response.data.ccache_ntlm_auth.auth_blob_len);
 804                 if (wb_response.data.ccache_ntlm_auth.auth_blob_len > 0 &&
 805                                 reply->data == NULL) {
 806                         winbindd_free_response(&wb_response);
 807                         return NT_STATUS_NO_MEMORY;
 808                 }
 809         }
 810
 811         winbindd_free_response(&wb_response);
 812         return NT_STATUS_MORE_PROCESSING_REQUIRED;
 813 }
 814
 815 static void manage_squid_ntlmssp_request(struct ntlm_auth_state *state,
 816                                                 char *buf, int length)
 817 {
 818         DATA_BLOB request, reply;
 819         NTSTATUS nt_status;
 820
 821         if (strlen(buf) < 2) {
 822                 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
 823                 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
 824                 return;
 825         }
 826
 827         if (strlen(buf) > 3) {
 828                 if(strncmp(buf, "SF ", 3) == 0){
 829                         DEBUG(10, ("Setting flags to negotioate\n"));
 830                         TALLOC_FREE(state->want_feature_list);
 831                         state->want_feature_list = talloc_strdup(state->mem_ctx,
 832                                         buf+3);
 833                         x_fprintf(x_stdout, "OK\n");
 834                         return;
 835                 }
 836                 request = base64_decode_data_blob(buf + 3);
 837         } else {
 838                 request = data_blob_null;
 839         }
 840
 841         if ((strncmp(buf, "PW ", 3) == 0)) {
 842                 /* The calling application wants us to use a local password
 843                  * (rather than winbindd) */
 844
 845                 opt_password = SMB_STRNDUP((const char *)request.data,
 846                                 request.length);
 847
 848                 if (opt_password == NULL) {
 849                         DEBUG(1, ("Out of memory\n"));
 850                         x_fprintf(x_stdout, "BH Out of memory\n");
 851                         data_blob_free(&request);
 852                         return;
 853                 }
 854
 855                 x_fprintf(x_stdout, "OK\n");
 856                 data_blob_free(&request);
 857                 return;
 858         }
 859
 860         if (strncmp(buf, "YR", 2) == 0) {
 861                 TALLOC_FREE(state->ntlmssp_state);
 862                 state->svr_state = SERVER_INITIAL;
 863         } else if (strncmp(buf, "KK", 2) == 0) {
 864                 /* No special preprocessing required */
 865         } else if (strncmp(buf, "GF", 2) == 0) {
 866                 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
 867
 868                 if (state->svr_state == SERVER_FINISHED) {
 869                         x_fprintf(x_stdout, "GF 0x%08x\n", state->neg_flags);
 870                 }
 871                 else {
 872                         x_fprintf(x_stdout, "BH\n");
 873                 }
 874                 data_blob_free(&request);
 875                 return;
 876         } else if (strncmp(buf, "GK", 2) == 0) {
 877                 DEBUG(10, ("Requested NTLMSSP session key\n"));
 878                 if(state->have_session_key) {
 879                         char *key64 = base64_encode_data_blob(state->mem_ctx,
 880                                         state->session_key);
 881                         x_fprintf(x_stdout, "GK %s\n", key64?key64:"<NULL>");
 882                         TALLOC_FREE(key64);
 883                 } else {
 884                         x_fprintf(x_stdout, "BH\n");
 885                 }
 886
 887                 data_blob_free(&request);
 888                 return;
 889         } else {
 890                 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
 891                 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
 892                 return;
 893         }
 894
 895         if (!state->ntlmssp_state) {
 896                 nt_status = ntlm_auth_start_ntlmssp_server(
 897                                 &state->ntlmssp_state);
 898                 if (!NT_STATUS_IS_OK(nt_status)) {
 899                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
 900                         return;
 901                 }
 902                 ntlmssp_want_feature_list(state->ntlmssp_state,
 903                                 state->want_feature_list);
 904         }
 905
 906         DEBUG(10, ("got NTLMSSP packet:\n"));
 907         dump_data(10, request.data, request.length);
 908
 909         nt_status = ntlmssp_update(state->ntlmssp_state, request, &reply);
 910
 911         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 912                 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
 913                                 reply);
 914                 x_fprintf(x_stdout, "TT %s\n", reply_base64);
 915                 TALLOC_FREE(reply_base64);
 916                 data_blob_free(&reply);
 917                 state->svr_state = SERVER_CHALLENGE;
 918                 DEBUG(10, ("NTLMSSP challenge\n"));
 919         } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
 920                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
 921                 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
 922
 923                 TALLOC_FREE(state->ntlmssp_state);
 924         } else if (!NT_STATUS_IS_OK(nt_status)) {
 925                 x_fprintf(x_stdout, "NA %s\n", nt_errstr(nt_status));
 926                 DEBUG(10, ("NTLMSSP %s\n", nt_errstr(nt_status)));
 927         } else {
 928                 x_fprintf(x_stdout, "AF %s\n",
 929                                 (char *)state->ntlmssp_state->callback_private);
 930                 DEBUG(10, ("NTLMSSP OK!\n"));
 931
 932                 if(state->have_session_key)
 933                         data_blob_free(&state->session_key);
 934                 state->session_key = data_blob(
 935                                 state->ntlmssp_state->session_key.data,
 936                                 state->ntlmssp_state->session_key.length);
 937                 state->neg_flags = state->ntlmssp_state->neg_flags;
 938                 state->have_session_key = true;
 939                 state->svr_state = SERVER_FINISHED;
 940         }
 941
 942         data_blob_free(&request);
 943 }
 944
 945 static void manage_client_ntlmssp_request(struct ntlm_auth_state *state,
 946                                                 char *buf, int length)
 947 {
 948         DATA_BLOB request, reply;
 949         NTSTATUS nt_status;
 950
 951         if (!opt_username || !*opt_username) {
 952                 x_fprintf(x_stderr, "username must be specified!\n\n");
 953                 exit(1);
 954         }
 955
 956         if (strlen(buf) < 2) {
 957                 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
 958                 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
 959                 return;
 960         }
 961
 962         if (strlen(buf) > 3) {
 963                 if(strncmp(buf, "SF ", 3) == 0) {
 964                         DEBUG(10, ("Looking for flags to negotiate\n"));
 965                         talloc_free(state->want_feature_list);
 966                         state->want_feature_list = talloc_strdup(state->mem_ctx,
 967                                         buf+3);
 968                         x_fprintf(x_stdout, "OK\n");
 969                         return;
 970                 }
 971                 request = base64_decode_data_blob(buf + 3);
 972         } else {
 973                 request = data_blob_null;
 974         }
 975
 976         if (strncmp(buf, "PW ", 3) == 0) {
 977                 /* We asked for a password and obviously got it :-) */
 978
 979                 opt_password = SMB_STRNDUP((const char *)request.data,
 980                                 request.length);
 981
 982                 if (opt_password == NULL) {
 983                         DEBUG(1, ("Out of memory\n"));
 984                         x_fprintf(x_stdout, "BH Out of memory\n");
 985                         data_blob_free(&request);
 986                         return;
 987                 }
 988
 989                 x_fprintf(x_stdout, "OK\n");
 990                 data_blob_free(&request);
 991                 return;
 992         }
 993
 994         if (!state->ntlmssp_state && use_cached_creds) {
 995                 /* check whether cached credentials are usable. */
 996                 DATA_BLOB empty_blob = data_blob_null;
 997
 998                 nt_status = do_ccache_ntlm_auth(empty_blob, empty_blob, NULL);
 999                 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1000                         /* failed to use cached creds */
1001                         use_cached_creds = False;
1002                 }
1003         }
1004
1005         if (opt_password == NULL && !use_cached_creds) {
1006                 /* Request a password from the calling process.  After
1007                    sending it, the calling process should retry asking for the
1008                    negotiate. */
1009
1010                 DEBUG(10, ("Requesting password\n"));
1011                 x_fprintf(x_stdout, "PW\n");
1012                 return;
1013         }
1014
1015         if (strncmp(buf, "YR", 2) == 0) {
1016                 TALLOC_FREE(state->ntlmssp_state);
1017                 state->cli_state = CLIENT_INITIAL;
1018         } else if (strncmp(buf, "TT", 2) == 0) {
1019                 /* No special preprocessing required */
1020         } else if (strncmp(buf, "GF", 2) == 0) {
1021                 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
1022
1023                 if(state->cli_state == CLIENT_FINISHED) {
1024                         x_fprintf(x_stdout, "GF 0x%08x\n", state->neg_flags);
1025                 }
1026                 else {
1027                         x_fprintf(x_stdout, "BH\n");
1028                 }
1029
1030                 data_blob_free(&request);
1031                 return;
1032         } else if (strncmp(buf, "GK", 2) == 0 ) {
1033                 DEBUG(10, ("Requested session key\n"));
1034
1035                 if(state->cli_state == CLIENT_FINISHED) {
1036                         char *key64 = base64_encode_data_blob(state->mem_ctx,
1037                                         state->session_key);
1038                         x_fprintf(x_stdout, "GK %s\n", key64?key64:"<NULL>");
1039                         TALLOC_FREE(key64);
1040                 }
1041                 else {
1042                         x_fprintf(x_stdout, "BH\n");
1043                 }
1044
1045                 data_blob_free(&request);
1046                 return;
1047         } else {
1048                 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
1049                 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
1050                 return;
1051         }
1052
1053         if (!state->ntlmssp_state) {
1054                 nt_status = ntlm_auth_start_ntlmssp_client(
1055                                 &state->ntlmssp_state);
1056                 if (!NT_STATUS_IS_OK(nt_status)) {
1057                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
1058                         return;
1059                 }
1060                 ntlmssp_want_feature_list(state->ntlmssp_state,
1061                                 state->want_feature_list);
1062                 state->initial_message = data_blob_null;
1063         }
1064
1065         DEBUG(10, ("got NTLMSSP packet:\n"));
1066         dump_data(10, request.data, request.length);
1067
1068         if (use_cached_creds && !opt_password &&
1069                         (state->cli_state == CLIENT_RESPONSE)) {
1070                 nt_status = do_ccache_ntlm_auth(state->initial_message, request,
1071                                 &reply);
1072         } else {
1073                 nt_status = ntlmssp_update(state->ntlmssp_state, request,
1074                                 &reply);
1075         }
1076
1077         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1078                 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
1079                                 reply);
1080                 if (state->cli_state == CLIENT_INITIAL) {
1081                         x_fprintf(x_stdout, "YR %s\n", reply_base64);
1082                         state->initial_message = reply;
1083                         state->cli_state = CLIENT_RESPONSE;
1084                 } else {
1085                         x_fprintf(x_stdout, "KK %s\n", reply_base64);
1086                         data_blob_free(&reply);
1087                 }
1088                 TALLOC_FREE(reply_base64);
1089                 DEBUG(10, ("NTLMSSP challenge\n"));
1090         } else if (NT_STATUS_IS_OK(nt_status)) {
1091                 char *reply_base64 = base64_encode_data_blob(talloc_tos(),
1092                                 reply);
1093                 x_fprintf(x_stdout, "AF %s\n", reply_base64);
1094                 TALLOC_FREE(reply_base64);
1095
1096                 if(state->have_session_key)
1097                         data_blob_free(&state->session_key);
1098
1099                 state->session_key = data_blob(
1100                                 state->ntlmssp_state->session_key.data,
1101                                 state->ntlmssp_state->session_key.length);
1102                 state->neg_flags = state->ntlmssp_state->neg_flags;
1103                 state->have_session_key = true;
1104
1105                 DEBUG(10, ("NTLMSSP OK!\n"));
1106                 state->cli_state = CLIENT_FINISHED;
1107                 TALLOC_FREE(state->ntlmssp_state);
1108         } else {
1109                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
1110                 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
1111                 state->cli_state = CLIENT_ERROR;
1112                 TALLOC_FREE(state->ntlmssp_state);
1113         }
1114
1115         data_blob_free(&request);
1116 }
1117
1118 static void manage_squid_basic_request(struct ntlm_auth_state *state,
1119                                         char *buf, int length)
1120 {
1121         char *user, *pass;
1122         user=buf;
1123
1124         pass=(char *)memchr(buf,' ',length);
1125         if (!pass) {
1126                 DEBUG(2, ("Password not found. Denying access\n"));
1127                 x_fprintf(x_stdout, "ERR\n");
1128                 return;
1129         }
1130         *pass='\0';
1131         pass++;
1132
1133         if (state->helper_mode == SQUID_2_5_BASIC) {
1134                 rfc1738_unescape(user);
1135                 rfc1738_unescape(pass);
1136         }
1137
1138         if (check_plaintext_auth(user, pass, False)) {
1139                 x_fprintf(x_stdout, "OK\n");
1140         } else {
1141                 x_fprintf(x_stdout, "ERR\n");
1142         }
1143 }
1144
1145 static void offer_gss_spnego_mechs(void) {
1146
1147         DATA_BLOB token;
1148         struct spnego_data spnego;
1149         ssize_t len;
1150         char *reply_base64;
1151         TALLOC_CTX *ctx = talloc_tos();
1152         char *principal;
1153         char *myname_lower;
1154
1155         ZERO_STRUCT(spnego);
1156
1157         myname_lower = talloc_strdup(ctx, global_myname());
1158         if (!myname_lower) {
1159                 return;
1160         }
1161         strlower_m(myname_lower);
1162
1163         principal = talloc_asprintf(ctx, "%s$@%s", myname_lower, lp_realm());
1164         if (!principal) {
1165                 return;
1166         }
1167
1168         /* Server negTokenInit (mech offerings) */
1169         spnego.type = SPNEGO_NEG_TOKEN_INIT;
1170         spnego.negTokenInit.mechTypes = talloc_array(ctx, const char *, 3);
1171 #ifdef HAVE_KRB5
1172         spnego.negTokenInit.mechTypes[0] = talloc_strdup(ctx, OID_KERBEROS5_OLD);
1173         spnego.negTokenInit.mechTypes[1] = talloc_strdup(ctx, OID_NTLMSSP);
1174         spnego.negTokenInit.mechTypes[2] = NULL;
1175 #else
1176         spnego.negTokenInit.mechTypes[0] = talloc_strdup(ctx, OID_NTLMSSP);
1177         spnego.negTokenInit.mechTypes[1] = NULL;
1178 #endif
1179
1180
1181         spnego.negTokenInit.mechListMIC = data_blob_talloc(ctx, principal,
1182                                                     strlen(principal));
1183
1184         len = spnego_write_data(ctx, &token, &spnego);
1185         spnego_free_data(&spnego);
1186
1187         if (len == -1) {
1188                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1189                 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1190                 return;
1191         }
1192
1193         reply_base64 = base64_encode_data_blob(talloc_tos(), token);
1194         x_fprintf(x_stdout, "TT %s *\n", reply_base64);
1195
1196         TALLOC_FREE(reply_base64);
1197         data_blob_free(&token);
1198         DEBUG(10, ("sent SPNEGO negTokenInit\n"));
1199         return;
1200 }
1201
1202 static void manage_gss_spnego_request(struct ntlm_auth_state *state,
1203                                         char *buf, int length)
1204 {
1205         static struct ntlmssp_state *ntlmssp_state = NULL;
1206         struct spnego_data request, response;
1207         DATA_BLOB token;
1208         NTSTATUS status;
1209         ssize_t len;
1210         TALLOC_CTX *ctx = talloc_tos();
1211
1212         char *user = NULL;
1213         char *domain = NULL;
1214
1215         const char *reply_code;
1216         char       *reply_base64;
1217         char *reply_argument = NULL;
1218
1219         if (strlen(buf) < 2) {
1220                 DEBUG(1, ("SPENGO query [%s] invalid\n", buf));
1221                 x_fprintf(x_stdout, "BH SPENGO query invalid\n");
1222                 return;
1223         }
1224
1225         if (strncmp(buf, "YR", 2) == 0) {
1226                 TALLOC_FREE(ntlmssp_state);
1227         } else if (strncmp(buf, "KK", 2) == 0) {
1228                 ;
1229         } else {
1230                 DEBUG(1, ("SPENGO query [%s] invalid\n", buf));
1231                 x_fprintf(x_stdout, "BH SPENGO query invalid\n");
1232                 return;
1233         }
1234
1235         if ( (strlen(buf) == 2)) {
1236
1237                 /* no client data, get the negTokenInit offering
1238                    mechanisms */
1239
1240                 offer_gss_spnego_mechs();
1241                 return;
1242         }
1243
1244         /* All subsequent requests have a blob. This might be negTokenInit or negTokenTarg */
1245
1246         if (strlen(buf) <= 3) {
1247                 DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
1248                 x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
1249                 return;
1250         }
1251
1252         token = base64_decode_data_blob(buf + 3);
1253         len = spnego_read_data(ctx, token, &request);
1254         data_blob_free(&token);
1255
1256         if (len == -1) {
1257                 DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
1258                 x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
1259                 return;
1260         }
1261
1262         if (request.type == SPNEGO_NEG_TOKEN_INIT) {
1263
1264                 /* Second request from Client. This is where the
1265                    client offers its mechanism to use. */
1266
1267                 if ( (request.negTokenInit.mechTypes == NULL) ||
1268                      (request.negTokenInit.mechTypes[0] == NULL) ) {
1269                         DEBUG(1, ("Client did not offer any mechanism\n"));
1270                         x_fprintf(x_stdout, "BH Client did not offer any "
1271                                             "mechanism\n");
1272                         return;
1273                 }
1274
1275                 status = NT_STATUS_UNSUCCESSFUL;
1276                 if (strcmp(request.negTokenInit.mechTypes[0], OID_NTLMSSP) == 0) {
1277
1278                         if ( request.negTokenInit.mechToken.data == NULL ) {
1279                                 DEBUG(1, ("Client did not provide NTLMSSP data\n"));
1280                                 x_fprintf(x_stdout, "BH Client did not provide "
1281                                                     "NTLMSSP data\n");
1282                                 return;
1283                         }
1284
1285                         if ( ntlmssp_state != NULL ) {
1286                                 DEBUG(1, ("Client wants a new NTLMSSP challenge, but "
1287                                           "already got one\n"));
1288                                 x_fprintf(x_stdout, "BH Client wants a new "
1289                                                     "NTLMSSP challenge, but "
1290                                                     "already got one\n");
1291                                 TALLOC_FREE(ntlmssp_state);
1292                                 return;
1293                         }
1294
1295                         if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
1296                                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1297                                 return;
1298                         }
1299
1300                         DEBUG(10, ("got NTLMSSP packet:\n"));
1301                         dump_data(10, request.negTokenInit.mechToken.data,
1302                                   request.negTokenInit.mechToken.length);
1303
1304                         response.type = SPNEGO_NEG_TOKEN_TARG;
1305                         response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_NTLMSSP);
1306                         response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1307
1308                         status = ntlmssp_update(ntlmssp_state,
1309                                                        request.negTokenInit.mechToken,
1310                                                        &response.negTokenTarg.responseToken);
1311                 }
1312
1313 #ifdef HAVE_KRB5
1314                 if (strcmp(request.negTokenInit.mechTypes[0], OID_KERBEROS5_OLD) == 0) {
1315
1316                         TALLOC_CTX *mem_ctx = talloc_init("manage_gss_spnego_request");
1317                         char *principal;
1318                         DATA_BLOB ap_rep;
1319                         DATA_BLOB session_key;
1320                         struct PAC_LOGON_INFO *logon_info = NULL;
1321
1322                         if ( request.negTokenInit.mechToken.data == NULL ) {
1323                                 DEBUG(1, ("Client did not provide Kerberos data\n"));
1324                                 x_fprintf(x_stdout, "BH Client did not provide "
1325                                                     "Kerberos data\n");
1326                                 return;
1327                         }
1328
1329                         response.type = SPNEGO_NEG_TOKEN_TARG;
1330                         response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_KERBEROS5_OLD);
1331                         response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1332                         response.negTokenTarg.responseToken = data_blob_talloc(ctx, NULL, 0);
1333
1334                         status = ads_verify_ticket(mem_ctx, lp_realm(), 0,
1335                                                    &request.negTokenInit.mechToken,
1336                                                    &principal, &logon_info, &ap_rep,
1337                                                    &session_key, True);
1338
1339                         /* Now in "principal" we have the name we are
1340                            authenticated as. */
1341
1342                         if (NT_STATUS_IS_OK(status)) {
1343
1344                                 domain = strchr_m(principal, '@');
1345
1346                                 if (domain == NULL) {
1347                                         DEBUG(1, ("Did not get a valid principal "
1348                                                   "from ads_verify_ticket\n"));
1349                                         x_fprintf(x_stdout, "BH Did not get a "
1350                                                   "valid principal from "
1351                                                   "ads_verify_ticket\n");
1352                                         return;
1353                                 }
1354
1355                                 *domain++ = '\0';
1356                                 domain = SMB_STRDUP(domain);
1357                                 user = SMB_STRDUP(principal);
1358
1359                                 data_blob_free(&ap_rep);
1360                         }
1361
1362                         TALLOC_FREE(mem_ctx);
1363                 }
1364 #endif
1365
1366         } else {
1367
1368                 if ( (request.negTokenTarg.supportedMech == NULL) ||
1369                      ( strcmp(request.negTokenTarg.supportedMech, OID_NTLMSSP) != 0 ) ) {
1370                         /* Kerberos should never send a negTokenTarg, OID_NTLMSSP
1371                            is the only one we support that sends this stuff */
1372                         DEBUG(1, ("Got a negTokenTarg for something non-NTLMSSP: %s\n",
1373                                   request.negTokenTarg.supportedMech));
1374                         x_fprintf(x_stdout, "BH Got a negTokenTarg for "
1375                                             "something non-NTLMSSP\n");
1376                         return;
1377                 }
1378
1379                 if (request.negTokenTarg.responseToken.data == NULL) {
1380                         DEBUG(1, ("Got a negTokenTarg without a responseToken!\n"));
1381                         x_fprintf(x_stdout, "BH Got a negTokenTarg without a "
1382                                             "responseToken!\n");
1383                         return;
1384                 }
1385
1386                 status = ntlmssp_update(ntlmssp_state,
1387                                                request.negTokenTarg.responseToken,
1388                                                &response.negTokenTarg.responseToken);
1389
1390                 response.type = SPNEGO_NEG_TOKEN_TARG;
1391                 response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_NTLMSSP);
1392                 response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1393
1394                 if (NT_STATUS_IS_OK(status)) {
1395                         user = SMB_STRDUP(ntlmssp_state->user);
1396                         domain = SMB_STRDUP(ntlmssp_state->domain);
1397                         TALLOC_FREE(ntlmssp_state);
1398                 }
1399         }
1400
1401         spnego_free_data(&request);
1402
1403         if (NT_STATUS_IS_OK(status)) {
1404                 response.negTokenTarg.negResult = SPNEGO_ACCEPT_COMPLETED;
1405                 reply_code = "AF";
1406                 reply_argument = talloc_asprintf(ctx, "%s\\%s", domain, user);
1407         } else if (NT_STATUS_EQUAL(status,
1408                                    NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1409                 response.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1410                 reply_code = "TT";
1411                 reply_argument = talloc_strdup(ctx, "*");
1412         } else {
1413                 response.negTokenTarg.negResult = SPNEGO_REJECT;
1414                 reply_code = "NA";
1415                 reply_argument = talloc_strdup(ctx, nt_errstr(status));
1416         }
1417
1418         if (!reply_argument) {
1419                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1420                 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1421                 return;
1422         }
1423
1424         SAFE_FREE(user);
1425         SAFE_FREE(domain);
1426
1427         len = spnego_write_data(ctx, &token, &response);
1428         spnego_free_data(&response);
1429
1430         if (len == -1) {
1431                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1432                 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1433                 return;
1434         }
1435
1436         reply_base64 = base64_encode_data_blob(talloc_tos(), token);
1437
1438         x_fprintf(x_stdout, "%s %s %s\n",
1439                   reply_code, reply_base64, reply_argument);
1440
1441         TALLOC_FREE(reply_base64);
1442         data_blob_free(&token);
1443
1444         return;
1445 }
1446
1447 static struct ntlmssp_state *client_ntlmssp_state = NULL;
1448
1449 static bool manage_client_ntlmssp_init(struct spnego_data spnego)
1450 {
1451         NTSTATUS status;
1452         DATA_BLOB null_blob = data_blob_null;
1453         DATA_BLOB to_server;
1454         char *to_server_base64;
1455         const char *my_mechs[] = {OID_NTLMSSP, NULL};
1456         TALLOC_CTX *ctx = talloc_tos();
1457
1458         DEBUG(10, ("Got spnego negTokenInit with NTLMSSP\n"));
1459
1460         if (client_ntlmssp_state != NULL) {
1461                 DEBUG(1, ("Request for initial SPNEGO request where "
1462                           "we already have a state\n"));
1463                 return False;
1464         }
1465
1466         if (!client_ntlmssp_state) {
1467                 if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_client(&client_ntlmssp_state))) {
1468                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1469                         return False;
1470                 }
1471         }
1472
1473
1474         if (opt_password == NULL) {
1475
1476                 /* Request a password from the calling process.  After
1477                    sending it, the calling process should retry with
1478                    the negTokenInit. */
1479
1480                 DEBUG(10, ("Requesting password\n"));
1481                 x_fprintf(x_stdout, "PW\n");
1482                 return True;
1483         }
1484
1485         spnego.type = SPNEGO_NEG_TOKEN_INIT;
1486         spnego.negTokenInit.mechTypes = my_mechs;
1487         spnego.negTokenInit.reqFlags = data_blob_null;
1488         spnego.negTokenInit.reqFlagsPadding = 0;
1489         spnego.negTokenInit.mechListMIC = null_blob;
1490
1491         status = ntlmssp_update(client_ntlmssp_state, null_blob,
1492                                        &spnego.negTokenInit.mechToken);
1493
1494         if ( !(NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) ||
1495                         NT_STATUS_IS_OK(status)) ) {
1496                 DEBUG(1, ("Expected OK or MORE_PROCESSING_REQUIRED, got: %s\n",
1497                           nt_errstr(status)));
1498                 TALLOC_FREE(client_ntlmssp_state);
1499                 return False;
1500         }
1501
1502         spnego_write_data(ctx, &to_server, &spnego);
1503         data_blob_free(&spnego.negTokenInit.mechToken);
1504
1505         to_server_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1506         data_blob_free(&to_server);
1507         x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1508         TALLOC_FREE(to_server_base64);
1509         return True;
1510 }
1511
1512 static void manage_client_ntlmssp_targ(struct spnego_data spnego)
1513 {
1514         NTSTATUS status;
1515         DATA_BLOB null_blob = data_blob_null;
1516         DATA_BLOB request;
1517         DATA_BLOB to_server;
1518         char *to_server_base64;
1519         TALLOC_CTX *ctx = talloc_tos();
1520
1521         DEBUG(10, ("Got spnego negTokenTarg with NTLMSSP\n"));
1522
1523         if (client_ntlmssp_state == NULL) {
1524                 DEBUG(1, ("Got NTLMSSP tArg without a client state\n"));
1525                 x_fprintf(x_stdout, "BH Got NTLMSSP tArg without a client state\n");
1526                 return;
1527         }
1528
1529         if (spnego.negTokenTarg.negResult == SPNEGO_REJECT) {
1530                 x_fprintf(x_stdout, "NA\n");
1531                 TALLOC_FREE(client_ntlmssp_state);
1532                 return;
1533         }
1534
1535         if (spnego.negTokenTarg.negResult == SPNEGO_ACCEPT_COMPLETED) {
1536                 x_fprintf(x_stdout, "AF\n");
1537                 TALLOC_FREE(client_ntlmssp_state);
1538                 return;
1539         }
1540
1541         status = ntlmssp_update(client_ntlmssp_state,
1542                                        spnego.negTokenTarg.responseToken,
1543                                        &request);
1544
1545         if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1546                 DEBUG(1, ("Expected MORE_PROCESSING_REQUIRED from "
1547                           "ntlmssp_client_update, got: %s\n",
1548                           nt_errstr(status)));
1549                 x_fprintf(x_stdout, "BH Expected MORE_PROCESSING_REQUIRED from "
1550                                     "ntlmssp_client_update\n");
1551                 data_blob_free(&request);
1552                 TALLOC_FREE(client_ntlmssp_state);
1553                 return;
1554         }
1555
1556         spnego.type = SPNEGO_NEG_TOKEN_TARG;
1557         spnego.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1558         spnego.negTokenTarg.supportedMech = (char *)OID_NTLMSSP;
1559         spnego.negTokenTarg.responseToken = request;
1560         spnego.negTokenTarg.mechListMIC = null_blob;
1561
1562         spnego_write_data(ctx, &to_server, &spnego);
1563         data_blob_free(&request);
1564
1565         to_server_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1566         data_blob_free(&to_server);
1567         x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1568         TALLOC_FREE(to_server_base64);
1569         return;
1570 }
1571
1572 #ifdef HAVE_KRB5
1573
1574 static bool manage_client_krb5_init(struct spnego_data spnego)
1575 {
1576         char *principal;
1577         DATA_BLOB tkt, to_server;
1578         DATA_BLOB session_key_krb5 = data_blob_null;
1579         struct spnego_data reply;
1580         char *reply_base64;
1581         int retval;
1582
1583         const char *my_mechs[] = {OID_KERBEROS5_OLD, NULL};
1584         ssize_t len;
1585         TALLOC_CTX *ctx = talloc_tos();
1586
1587         if ( (spnego.negTokenInit.mechListMIC.data == NULL) ||
1588              (spnego.negTokenInit.mechListMIC.length == 0) ) {
1589                 DEBUG(1, ("Did not get a principal for krb5\n"));
1590                 return False;
1591         }
1592
1593         principal = (char *)SMB_MALLOC(
1594                 spnego.negTokenInit.mechListMIC.length+1);
1595
1596         if (principal == NULL) {
1597                 DEBUG(1, ("Could not malloc principal\n"));
1598                 return False;
1599         }
1600
1601         memcpy(principal, spnego.negTokenInit.mechListMIC.data,
1602                spnego.negTokenInit.mechListMIC.length);
1603         principal[spnego.negTokenInit.mechListMIC.length] = '\0';
1604
1605         retval = cli_krb5_get_ticket(ctx, principal, 0,
1606                                           &tkt, &session_key_krb5,
1607                                           0, NULL, NULL, NULL);
1608         if (retval) {
1609                 char *user = NULL;
1610
1611                 /* Let's try to first get the TGT, for that we need a
1612                    password. */
1613
1614                 if (opt_password == NULL) {
1615                         DEBUG(10, ("Requesting password\n"));
1616                         x_fprintf(x_stdout, "PW\n");
1617                         return True;
1618                 }
1619
1620                 user = talloc_asprintf(talloc_tos(), "%s@%s", opt_username, opt_domain);
1621                 if (!user) {
1622                         return false;
1623                 }
1624
1625                 if ((retval = kerberos_kinit_password(user, opt_password, 0, NULL))) {
1626                         DEBUG(10, ("Requesting TGT failed: %s\n", error_message(retval)));
1627                         return False;
1628                 }
1629
1630                 retval = cli_krb5_get_ticket(ctx, principal, 0,
1631                                                   &tkt, &session_key_krb5,
1632                                                   0, NULL, NULL, NULL);
1633                 if (retval) {
1634                         DEBUG(10, ("Kinit suceeded, but getting a ticket failed: %s\n", error_message(retval)));
1635                         return False;
1636                 }
1637         }
1638
1639         data_blob_free(&session_key_krb5);
1640
1641         ZERO_STRUCT(reply);
1642
1643         reply.type = SPNEGO_NEG_TOKEN_INIT;
1644         reply.negTokenInit.mechTypes = my_mechs;
1645         reply.negTokenInit.reqFlags = data_blob_null;
1646         reply.negTokenInit.reqFlagsPadding = 0;
1647         reply.negTokenInit.mechToken = tkt;
1648         reply.negTokenInit.mechListMIC = data_blob_null;
1649
1650         len = spnego_write_data(ctx, &to_server, &reply);
1651         data_blob_free(&tkt);
1652
1653         if (len == -1) {
1654                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1655                 return False;
1656         }
1657
1658         reply_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1659         x_fprintf(x_stdout, "KK %s *\n", reply_base64);
1660
1661         TALLOC_FREE(reply_base64);
1662         data_blob_free(&to_server);
1663         DEBUG(10, ("sent GSS-SPNEGO KERBEROS5 negTokenInit\n"));
1664         return True;
1665 }
1666
1667 static void manage_client_krb5_targ(struct spnego_data spnego)
1668 {
1669         switch (spnego.negTokenTarg.negResult) {
1670         case SPNEGO_ACCEPT_INCOMPLETE:
1671                 DEBUG(1, ("Got a Kerberos negTokenTarg with ACCEPT_INCOMPLETE\n"));
1672                 x_fprintf(x_stdout, "BH Got a Kerberos negTokenTarg with "
1673                                     "ACCEPT_INCOMPLETE\n");
1674                 break;
1675         case SPNEGO_ACCEPT_COMPLETED:
1676                 DEBUG(10, ("Accept completed\n"));
1677                 x_fprintf(x_stdout, "AF\n");
1678                 break;
1679         case SPNEGO_REJECT:
1680                 DEBUG(10, ("Rejected\n"));
1681                 x_fprintf(x_stdout, "NA\n");
1682                 break;
1683         default:
1684                 DEBUG(1, ("Got an invalid negTokenTarg\n"));
1685                 x_fprintf(x_stdout, "AF\n");
1686         }
1687 }
1688
1689 #endif
1690
1691 static void manage_gss_spnego_client_request(struct ntlm_auth_state *state,
1692                                                 char *buf, int length)
1693 {
1694         DATA_BLOB request;
1695         struct spnego_data spnego;
1696         ssize_t len;
1697         TALLOC_CTX *ctx = talloc_tos();
1698
1699         if (!opt_username || !*opt_username) {
1700                 x_fprintf(x_stderr, "username must be specified!\n\n");
1701                 exit(1);
1702         }
1703
1704         if (strlen(buf) <= 3) {
1705                 DEBUG(1, ("SPNEGO query [%s] too short\n", buf));
1706                 x_fprintf(x_stdout, "BH SPNEGO query too short\n");
1707                 return;
1708         }
1709
1710         request = base64_decode_data_blob(buf+3);
1711
1712         if (strncmp(buf, "PW ", 3) == 0) {
1713
1714                 /* We asked for a password and obviously got it :-) */
1715
1716                 opt_password = SMB_STRNDUP((const char *)request.data, request.length);
1717
1718                 if (opt_password == NULL) {
1719                         DEBUG(1, ("Out of memory\n"));
1720                         x_fprintf(x_stdout, "BH Out of memory\n");
1721                         data_blob_free(&request);
1722                         return;
1723                 }
1724
1725                 x_fprintf(x_stdout, "OK\n");
1726                 data_blob_free(&request);
1727                 return;
1728         }
1729
1730         if ( (strncmp(buf, "TT ", 3) != 0) &&
1731              (strncmp(buf, "AF ", 3) != 0) &&
1732              (strncmp(buf, "NA ", 3) != 0) ) {
1733                 DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
1734                 x_fprintf(x_stdout, "BH SPNEGO request invalid\n");
1735                 data_blob_free(&request);
1736                 return;
1737         }
1738
1739         /* So we got a server challenge to generate a SPNEGO
1740            client-to-server request... */
1741
1742         len = spnego_read_data(ctx, request, &spnego);
1743         data_blob_free(&request);
1744
1745         if (len == -1) {
1746                 DEBUG(1, ("Could not read SPNEGO data for [%s]\n", buf));
1747                 x_fprintf(x_stdout, "BH Could not read SPNEGO data\n");
1748                 return;
1749         }
1750
1751         if (spnego.type == SPNEGO_NEG_TOKEN_INIT) {
1752
1753                 /* The server offers a list of mechanisms */
1754
1755                 const char **mechType = (const char **)spnego.negTokenInit.mechTypes;
1756
1757                 while (*mechType != NULL) {
1758
1759 #ifdef HAVE_KRB5
1760                         if ( (strcmp(*mechType, OID_KERBEROS5_OLD) == 0) ||
1761                              (strcmp(*mechType, OID_KERBEROS5) == 0) ) {
1762                                 if (manage_client_krb5_init(spnego))
1763                                         goto out;
1764                         }
1765 #endif
1766
1767                         if (strcmp(*mechType, OID_NTLMSSP) == 0) {
1768                                 if (manage_client_ntlmssp_init(spnego))
1769                                         goto out;
1770                         }
1771
1772                         mechType++;
1773                 }
1774
1775                 DEBUG(1, ("Server offered no compatible mechanism\n"));
1776                 x_fprintf(x_stdout, "BH Server offered no compatible mechanism\n");
1777                 return;
1778         }
1779
1780         if (spnego.type == SPNEGO_NEG_TOKEN_TARG) {
1781
1782                 if (spnego.negTokenTarg.supportedMech == NULL) {
1783                         /* On accept/reject Windows does not send the
1784                            mechanism anymore. Handle that here and
1785                            shut down the mechanisms. */
1786
1787                         switch (spnego.negTokenTarg.negResult) {
1788                         case SPNEGO_ACCEPT_COMPLETED:
1789                                 x_fprintf(x_stdout, "AF\n");
1790                                 break;
1791                         case SPNEGO_REJECT:
1792                                 x_fprintf(x_stdout, "NA\n");
1793                                 break;
1794                         default:
1795                                 DEBUG(1, ("Got a negTokenTarg with no mech and an "
1796                                           "unknown negResult: %d\n",
1797                                           spnego.negTokenTarg.negResult));
1798                                 x_fprintf(x_stdout, "BH Got a negTokenTarg with"
1799                                                     " no mech and an unknown "
1800                                                     "negResult\n");
1801                         }
1802
1803                         TALLOC_FREE(client_ntlmssp_state);
1804                         goto out;
1805                 }
1806
1807                 if (strcmp(spnego.negTokenTarg.supportedMech,
1808                            OID_NTLMSSP) == 0) {
1809                         manage_client_ntlmssp_targ(spnego);
1810                         goto out;
1811                 }
1812
1813 #if HAVE_KRB5
1814                 if (strcmp(spnego.negTokenTarg.supportedMech,
1815                            OID_KERBEROS5_OLD) == 0) {
1816                         manage_client_krb5_targ(spnego);
1817                         goto out;
1818                 }
1819 #endif
1820
1821         }
1822
1823         DEBUG(1, ("Got an SPNEGO token I could not handle [%s]!\n", buf));
1824         x_fprintf(x_stdout, "BH Got an SPNEGO token I could not handle\n");
1825         return;
1826
1827  out:
1828         spnego_free_data(&spnego);
1829         return;
1830 }
1831
1832 static void manage_ntlm_server_1_request(struct ntlm_auth_state *state,
1833                                                 char *buf, int length)
1834 {
1835         char *request, *parameter;
1836         static DATA_BLOB challenge;
1837         static DATA_BLOB lm_response;
1838         static DATA_BLOB nt_response;
1839         static char *full_username;
1840         static char *username;
1841         static char *domain;
1842         static char *plaintext_password;
1843         static bool ntlm_server_1_user_session_key;
1844         static bool ntlm_server_1_lm_session_key;
1845
1846         if (strequal(buf, ".")) {
1847                 if (!full_username && !username) {
1848                         x_fprintf(x_stdout, "Error: No username supplied!\n");
1849                 } else if (plaintext_password) {
1850                         /* handle this request as plaintext */
1851                         if (!full_username) {
1852                                 if (asprintf(&full_username, "%s%c%s", domain, winbind_separator(), username) == -1) {
1853                                         x_fprintf(x_stdout, "Error: Out of memory in asprintf!\n.\n");
1854                                         return;
1855                                 }
1856                         }
1857                         if (check_plaintext_auth(full_username, plaintext_password, False)) {
1858                                 x_fprintf(x_stdout, "Authenticated: Yes\n");
1859                         } else {
1860                                 x_fprintf(x_stdout, "Authenticated: No\n");
1861                         }
1862                 } else if (!lm_response.data && !nt_response.data) {
1863                         x_fprintf(x_stdout, "Error: No password supplied!\n");
1864                 } else if (!challenge.data) {
1865                         x_fprintf(x_stdout, "Error: No lanman-challenge supplied!\n");
1866                 } else {
1867                         char *error_string = NULL;
1868                         uchar lm_key[8];
1869                         uchar user_session_key[16];
1870                         uint32 flags = 0;
1871
1872                         if (full_username && !username) {
1873                                 fstring fstr_user;
1874                                 fstring fstr_domain;
1875
1876                                 if (!parse_ntlm_auth_domain_user(full_username, fstr_user, fstr_domain)) {
1877                                         /* username might be 'tainted', don't print into our new-line deleimianted stream */
1878                                         x_fprintf(x_stdout, "Error: Could not parse into domain and username\n");
1879                                 }
1880                                 SAFE_FREE(username);
1881                                 SAFE_FREE(domain);
1882                                 username = smb_xstrdup(fstr_user);
1883                                 domain = smb_xstrdup(fstr_domain);
1884                         }
1885
1886                         if (!domain) {
1887                                 domain = smb_xstrdup(get_winbind_domain());
1888                         }
1889
1890                         if (ntlm_server_1_lm_session_key)
1891                                 flags |= WBFLAG_PAM_LMKEY;
1892
1893                         if (ntlm_server_1_user_session_key)
1894                                 flags |= WBFLAG_PAM_USER_SESSION_KEY;
1895
1896                         if (!NT_STATUS_IS_OK(
1897                                     contact_winbind_auth_crap(username,
1898                                                               domain,
1899                                                               global_myname(),
1900                                                               &challenge,
1901                                                               &lm_response,
1902                                                               &nt_response,
1903                                                               flags,
1904                                                               lm_key,
1905                                                               user_session_key,
1906                                                               &error_string,
1907                                                               NULL))) {
1908
1909                                 x_fprintf(x_stdout, "Authenticated: No\n");
1910                                 x_fprintf(x_stdout, "Authentication-Error: %s\n.\n", error_string);
1911                         } else {
1912                                 static char zeros[16];
1913                                 char *hex_lm_key;
1914                                 char *hex_user_session_key;
1915
1916                                 x_fprintf(x_stdout, "Authenticated: Yes\n");
1917
1918                                 if (ntlm_server_1_lm_session_key
1919                                     && (memcmp(zeros, lm_key,
1920                                                sizeof(lm_key)) != 0)) {
1921                                         hex_lm_key = hex_encode_talloc(NULL,
1922                                                                 (const unsigned char *)lm_key,
1923                                                                 sizeof(lm_key));
1924                                         x_fprintf(x_stdout, "LANMAN-Session-Key: %s\n", hex_lm_key);
1925                                         TALLOC_FREE(hex_lm_key);
1926                                 }
1927
1928                                 if (ntlm_server_1_user_session_key
1929                                     && (memcmp(zeros, user_session_key,
1930                                                sizeof(user_session_key)) != 0)) {
1931                                         hex_user_session_key = hex_encode_talloc(NULL,
1932                                                                           (const unsigned char *)user_session_key,
1933                                                                           sizeof(user_session_key));
1934                                         x_fprintf(x_stdout, "User-Session-Key: %s\n", hex_user_session_key);
1935                                         TALLOC_FREE(hex_user_session_key);
1936                                 }
1937                         }
1938                         SAFE_FREE(error_string);
1939                 }
1940                 /* clear out the state */
1941                 challenge = data_blob_null;
1942                 nt_response = data_blob_null;
1943                 lm_response = data_blob_null;
1944                 SAFE_FREE(full_username);
1945                 SAFE_FREE(username);
1946                 SAFE_FREE(domain);
1947                 SAFE_FREE(plaintext_password);
1948                 ntlm_server_1_user_session_key = False;
1949                 ntlm_server_1_lm_session_key = False;
1950                 x_fprintf(x_stdout, ".\n");
1951
1952                 return;
1953         }
1954
1955         request = buf;
1956
1957         /* Indicates a base64 encoded structure */
1958         parameter = strstr_m(request, ":: ");
1959         if (!parameter) {
1960                 parameter = strstr_m(request, ": ");
1961
1962                 if (!parameter) {
1963                         DEBUG(0, ("Parameter not found!\n"));
1964                         x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
1965                         return;
1966                 }
1967
1968                 parameter[0] ='\0';
1969                 parameter++;
1970                 parameter[0] ='\0';
1971                 parameter++;
1972
1973         } else {
1974                 parameter[0] ='\0';
1975                 parameter++;
1976                 parameter[0] ='\0';
1977                 parameter++;
1978                 parameter[0] ='\0';
1979                 parameter++;
1980
1981                 base64_decode_inplace(parameter);
1982         }
1983
1984         if (strequal(request, "LANMAN-Challenge")) {
1985                 challenge = strhex_to_data_blob(NULL, parameter);
1986                 if (challenge.length != 8) {
1987                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 8)\n.\n",
1988                                   parameter,
1989                                   (int)challenge.length);
1990                         challenge = data_blob_null;
1991                 }
1992         } else if (strequal(request, "NT-Response")) {
1993                 nt_response = strhex_to_data_blob(NULL, parameter);
1994                 if (nt_response.length < 24) {
1995                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (only got %d bytes, needed at least 24)\n.\n",
1996                                   parameter,
1997                                   (int)nt_response.length);
1998                         nt_response = data_blob_null;
1999                 }
2000         } else if (strequal(request, "LANMAN-Response")) {
2001                 lm_response = strhex_to_data_blob(NULL, parameter);
2002                 if (lm_response.length != 24) {
2003                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 24)\n.\n",
2004                                   parameter,
2005                                   (int)lm_response.length);
2006                         lm_response = data_blob_null;
2007                 }
2008         } else if (strequal(request, "Password")) {
2009                 plaintext_password = smb_xstrdup(parameter);
2010         } else if (strequal(request, "NT-Domain")) {
2011                 domain = smb_xstrdup(parameter);
2012         } else if (strequal(request, "Username")) {
2013                 username = smb_xstrdup(parameter);
2014         } else if (strequal(request, "Full-Username")) {
2015                 full_username = smb_xstrdup(parameter);
2016         } else if (strequal(request, "Request-User-Session-Key")) {
2017                 ntlm_server_1_user_session_key = strequal(parameter, "Yes");
2018         } else if (strequal(request, "Request-LanMan-Session-Key")) {
2019                 ntlm_server_1_lm_session_key = strequal(parameter, "Yes");
2020         } else {
2021                 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
2022         }
2023 }
2024
2025 static void manage_ntlm_change_password_1_request(struct ntlm_auth_state *state,
2026                                                         char *buf, int length)
2027 {
2028         char *request, *parameter;
2029         static DATA_BLOB new_nt_pswd;
2030         static DATA_BLOB old_nt_hash_enc;
2031         static DATA_BLOB new_lm_pswd;
2032         static DATA_BLOB old_lm_hash_enc;
2033         static char *full_username = NULL;
2034         static char *username = NULL;
2035         static char *domain = NULL;
2036         static char *newpswd =  NULL;
2037         static char *oldpswd = NULL;
2038
2039         if (strequal(buf, ".")) {
2040                 if(newpswd && oldpswd) {
2041                         uchar old_nt_hash[16];
2042                         uchar old_lm_hash[16];
2043                         uchar new_nt_hash[16];
2044                         uchar new_lm_hash[16];
2045
2046                         new_nt_pswd = data_blob(NULL, 516);
2047                         old_nt_hash_enc = data_blob(NULL, 16);
2048
2049                         /* Calculate the MD4 hash (NT compatible) of the
2050                          * password */
2051                         E_md4hash(oldpswd, old_nt_hash);
2052                         E_md4hash(newpswd, new_nt_hash);
2053
2054                         /* E_deshash returns false for 'long'
2055                            passwords (> 14 DOS chars).
2056
2057                            Therefore, don't send a buffer
2058                            encrypted with the truncated hash
2059                            (it could allow an even easier
2060                            attack on the password)
2061
2062                            Likewise, obey the admin's restriction
2063                         */
2064
2065                         if (lp_client_lanman_auth() &&
2066                             E_deshash(newpswd, new_lm_hash) &&
2067                             E_deshash(oldpswd, old_lm_hash)) {
2068                                 new_lm_pswd = data_blob(NULL, 516);
2069                                 old_lm_hash_enc = data_blob(NULL, 16);
2070                                 encode_pw_buffer(new_lm_pswd.data, newpswd,
2071                                                  STR_UNICODE);
2072
2073                                 arcfour_crypt(new_lm_pswd.data, old_nt_hash, 516);
2074                                 E_old_pw_hash(new_nt_hash, old_lm_hash,
2075                                               old_lm_hash_enc.data);
2076                         } else {
2077                                 new_lm_pswd.data = NULL;
2078                                 new_lm_pswd.length = 0;
2079                                 old_lm_hash_enc.data = NULL;
2080                                 old_lm_hash_enc.length = 0;
2081                         }
2082
2083                         encode_pw_buffer(new_nt_pswd.data, newpswd,
2084                                          STR_UNICODE);
2085
2086                         arcfour_crypt(new_nt_pswd.data, old_nt_hash, 516);
2087                         E_old_pw_hash(new_nt_hash, old_nt_hash,
2088                                       old_nt_hash_enc.data);
2089                 }
2090
2091                 if (!full_username && !username) {
2092                         x_fprintf(x_stdout, "Error: No username supplied!\n");
2093                 } else if ((!new_nt_pswd.data || !old_nt_hash_enc.data) &&
2094                            (!new_lm_pswd.data || old_lm_hash_enc.data) ) {
2095                         x_fprintf(x_stdout, "Error: No NT or LM password "
2096                                   "blobs supplied!\n");
2097                 } else {
2098                         char *error_string = NULL;
2099
2100                         if (full_username && !username) {
2101                                 fstring fstr_user;
2102                                 fstring fstr_domain;
2103
2104                                 if (!parse_ntlm_auth_domain_user(full_username,
2105                                                                  fstr_user,
2106                                                                  fstr_domain)) {
2107                                         /* username might be 'tainted', don't
2108                                          * print into our new-line
2109                                          * deleimianted stream */
2110                                         x_fprintf(x_stdout, "Error: Could not "
2111                                                   "parse into domain and "
2112                                                   "username\n");
2113                                         SAFE_FREE(username);
2114                                         username = smb_xstrdup(full_username);
2115                                 } else {
2116                                         SAFE_FREE(username);
2117                                         SAFE_FREE(domain);
2118                                         username = smb_xstrdup(fstr_user);
2119                                         domain = smb_xstrdup(fstr_domain);
2120                                 }
2121
2122                         }
2123
2124                         if(!NT_STATUS_IS_OK(contact_winbind_change_pswd_auth_crap(
2125                                                     username, domain,
2126                                                     new_nt_pswd,
2127                                                     old_nt_hash_enc,
2128                                                     new_lm_pswd,
2129                                                     old_lm_hash_enc,
2130                                                     &error_string))) {
2131                                 x_fprintf(x_stdout, "Password-Change: No\n");
2132                                 x_fprintf(x_stdout, "Password-Change-Error: "
2133                                           "%s\n.\n", error_string);
2134                         } else {
2135                                 x_fprintf(x_stdout, "Password-Change: Yes\n");
2136                         }
2137
2138                         SAFE_FREE(error_string);
2139                 }
2140                 /* clear out the state */
2141                 new_nt_pswd = data_blob_null;
2142                 old_nt_hash_enc = data_blob_null;
2143                 new_lm_pswd = data_blob_null;
2144                 old_nt_hash_enc = data_blob_null;
2145                 SAFE_FREE(full_username);
2146                 SAFE_FREE(username);
2147                 SAFE_FREE(domain);
2148                 SAFE_FREE(newpswd);
2149                 SAFE_FREE(oldpswd);
2150                 x_fprintf(x_stdout, ".\n");
2151
2152                 return;
2153         }
2154
2155         request = buf;
2156
2157         /* Indicates a base64 encoded structure */
2158         parameter = strstr_m(request, ":: ");
2159         if (!parameter) {
2160                 parameter = strstr_m(request, ": ");
2161
2162                 if (!parameter) {
2163                         DEBUG(0, ("Parameter not found!\n"));
2164                         x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
2165                         return;
2166                 }
2167
2168                 parameter[0] ='\0';
2169                 parameter++;
2170                 parameter[0] ='\0';
2171                 parameter++;
2172         } else {
2173                 parameter[0] ='\0';
2174                 parameter++;
2175                 parameter[0] ='\0';
2176                 parameter++;
2177                 parameter[0] ='\0';
2178                 parameter++;
2179
2180                 base64_decode_inplace(parameter);
2181         }
2182
2183         if (strequal(request, "new-nt-password-blob")) {
2184                 new_nt_pswd = strhex_to_data_blob(NULL, parameter);
2185                 if (new_nt_pswd.length != 516) {
2186                         x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2187                                   "(got %d bytes, expected 516)\n.\n",
2188                                   parameter,
2189                                   (int)new_nt_pswd.length);
2190                         new_nt_pswd = data_blob_null;
2191                 }
2192         } else if (strequal(request, "old-nt-hash-blob")) {
2193                 old_nt_hash_enc = strhex_to_data_blob(NULL, parameter);
2194                 if (old_nt_hash_enc.length != 16) {
2195                         x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2196                                   "(got %d bytes, expected 16)\n.\n",
2197                                   parameter,
2198                                   (int)old_nt_hash_enc.length);
2199                         old_nt_hash_enc = data_blob_null;
2200                 }
2201         } else if (strequal(request, "new-lm-password-blob")) {
2202                 new_lm_pswd = strhex_to_data_blob(NULL, parameter);
2203                 if (new_lm_pswd.length != 516) {
2204                         x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2205                                   "(got %d bytes, expected 516)\n.\n",
2206                                   parameter,
2207                                   (int)new_lm_pswd.length);
2208                         new_lm_pswd = data_blob_null;
2209                 }
2210         }
2211         else if (strequal(request, "old-lm-hash-blob")) {
2212                 old_lm_hash_enc = strhex_to_data_blob(NULL, parameter);
2213                 if (old_lm_hash_enc.length != 16)
2214                 {
2215                         x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2216                                   "(got %d bytes, expected 16)\n.\n",
2217                                   parameter,
2218                                   (int)old_lm_hash_enc.length);
2219                         old_lm_hash_enc = data_blob_null;
2220                 }
2221         } else if (strequal(request, "nt-domain")) {
2222                 domain = smb_xstrdup(parameter);
2223         } else if(strequal(request, "username")) {
2224                 username = smb_xstrdup(parameter);
2225         } else if(strequal(request, "full-username")) {
2226                 username = smb_xstrdup(parameter);
2227         } else if(strequal(request, "new-password")) {
2228                 newpswd = smb_xstrdup(parameter);
2229         } else if (strequal(request, "old-password")) {
2230                 oldpswd = smb_xstrdup(parameter);
2231         } else {
2232                 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
2233         }
2234 }
2235
2236 static void manage_squid_request(struct ntlm_auth_state *state,
2237                 stdio_helper_function fn)
2238 {
2239         char *buf;
2240         char tmp[INITIAL_BUFFER_SIZE+1];
2241         int length, buf_size = 0;
2242         char *c;
2243
2244         buf = talloc_strdup(state->mem_ctx, "");
2245         if (!buf) {
2246                 DEBUG(0, ("Failed to allocate input buffer.\n"));
2247                 x_fprintf(x_stderr, "ERR\n");
2248                 exit(1);
2249         }
2250
2251         do {
2252
2253                 /* this is not a typo - x_fgets doesn't work too well under
2254                  * squid */
2255                 if (fgets(tmp, sizeof(tmp)-1, stdin) == NULL) {
2256                         if (ferror(stdin)) {
2257                                 DEBUG(1, ("fgets() failed! dying..... errno=%d "
2258                                           "(%s)\n", ferror(stdin),
2259                                           strerror(ferror(stdin))));
2260
2261                                 exit(1);
2262                         }
2263                         exit(0);
2264                 }
2265
2266                 buf = talloc_strdup_append_buffer(buf, tmp);
2267                 buf_size += INITIAL_BUFFER_SIZE;
2268
2269                 if (buf_size > MAX_BUFFER_SIZE) {
2270                         DEBUG(2, ("Oversized message\n"));
2271                         x_fprintf(x_stderr, "ERR\n");
2272                         talloc_free(buf);
2273                         return;
2274                 }
2275
2276                 c = strchr(buf, '\n');
2277         } while (c == NULL);
2278
2279         *c = '\0';
2280         length = c-buf;
2281
2282         DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
2283
2284         if (buf[0] == '\0') {
2285                 DEBUG(2, ("Invalid Request\n"));
2286                 x_fprintf(x_stderr, "ERR\n");
2287                 talloc_free(buf);
2288                 return;
2289         }
2290
2291         fn(state, buf, length);
2292         talloc_free(buf);
2293 }
2294
2295
2296 static void squid_stream(enum stdio_helper_mode stdio_mode, stdio_helper_function fn) {
2297         TALLOC_CTX *mem_ctx;
2298         struct ntlm_auth_state *state;
2299
2300         /* initialize FDescs */
2301         x_setbuf(x_stdout, NULL);
2302         x_setbuf(x_stderr, NULL);
2303
2304         mem_ctx = talloc_init("ntlm_auth");
2305         if (!mem_ctx) {
2306                 DEBUG(0, ("squid_stream: Failed to create talloc context\n"));
2307                 x_fprintf(x_stderr, "ERR\n");
2308                 exit(1);
2309         }
2310
2311         state = talloc_zero(mem_ctx, struct ntlm_auth_state);
2312         if (!state) {
2313                 DEBUG(0, ("squid_stream: Failed to talloc ntlm_auth_state\n"));
2314                 x_fprintf(x_stderr, "ERR\n");
2315                 exit(1);
2316         }
2317
2318         state->mem_ctx = mem_ctx;
2319         state->helper_mode = stdio_mode;
2320
2321         while(1) {
2322                 TALLOC_CTX *frame = talloc_stackframe();
2323                 manage_squid_request(state, fn);
2324                 TALLOC_FREE(frame);
2325         }
2326 }
2327
2328
2329 /* Authenticate a user with a challenge/response */
2330
2331 static bool check_auth_crap(void)
2332 {
2333         NTSTATUS nt_status;
2334         uint32 flags = 0;
2335         char lm_key[8];
2336         char user_session_key[16];
2337         char *hex_lm_key;
2338         char *hex_user_session_key;
2339         char *error_string;
2340         static uint8 zeros[16];
2341
2342         x_setbuf(x_stdout, NULL);
2343
2344         if (request_lm_key)
2345                 flags |= WBFLAG_PAM_LMKEY;
2346
2347         if (request_user_session_key)
2348                 flags |= WBFLAG_PAM_USER_SESSION_KEY;
2349
2350         flags |= WBFLAG_PAM_NT_STATUS_SQUASH;
2351
2352         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
2353                                               opt_workstation,
2354                                               &opt_challenge,
2355                                               &opt_lm_response,
2356                                               &opt_nt_response,
2357                                               flags,
2358                                               (unsigned char *)lm_key,
2359                                               (unsigned char *)user_session_key,
2360                                               &error_string, NULL);
2361
2362         if (!NT_STATUS_IS_OK(nt_status)) {
2363                 x_fprintf(x_stdout, "%s (0x%x)\n",
2364                           error_string,
2365                           NT_STATUS_V(nt_status));
2366                 SAFE_FREE(error_string);
2367                 return False;
2368         }
2369
2370         if (request_lm_key
2371             && (memcmp(zeros, lm_key,
2372                        sizeof(lm_key)) != 0)) {
2373                 hex_lm_key = hex_encode_talloc(talloc_tos(), (const unsigned char *)lm_key,
2374                                         sizeof(lm_key));
2375                 x_fprintf(x_stdout, "LM_KEY: %s\n", hex_lm_key);
2376                 TALLOC_FREE(hex_lm_key);
2377         }
2378         if (request_user_session_key
2379             && (memcmp(zeros, user_session_key,
2380                        sizeof(user_session_key)) != 0)) {
2381                 hex_user_session_key = hex_encode_talloc(talloc_tos(), (const unsigned char *)user_session_key,
2382                                                   sizeof(user_session_key));
2383                 x_fprintf(x_stdout, "NT_KEY: %s\n", hex_user_session_key);
2384                 TALLOC_FREE(hex_user_session_key);
2385         }
2386
2387         return True;
2388 }
2389
2390 /* Main program */
2391
2392 enum {
2393         OPT_USERNAME = 1000,
2394         OPT_DOMAIN,
2395         OPT_WORKSTATION,
2396         OPT_CHALLENGE,
2397         OPT_RESPONSE,
2398         OPT_LM,
2399         OPT_NT,
2400         OPT_PASSWORD,
2401         OPT_LM_KEY,
2402         OPT_USER_SESSION_KEY,
2403         OPT_DIAGNOSTICS,
2404         OPT_REQUIRE_MEMBERSHIP,
2405         OPT_USE_CACHED_CREDS,
2406         OPT_PAM_WINBIND_CONF
2407 };
2408
2409  int main(int argc, const char **argv)
2410 {
2411         TALLOC_CTX *frame = talloc_stackframe();
2412         int opt;
2413         static const char *helper_protocol;
2414         static int diagnostics;
2415
2416         static const char *hex_challenge;
2417         static const char *hex_lm_response;
2418         static const char *hex_nt_response;
2419
2420         poptContext pc;
2421
2422         /* NOTE: DO NOT change this interface without considering the implications!
2423            This is an external interface, which other programs will use to interact
2424            with this helper.
2425         */
2426
2427         /* We do not use single-letter command abbreviations, because they harm future
2428            interface stability. */
2429
2430         struct poptOption long_options[] = {
2431                 POPT_AUTOHELP
2432                 { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
2433                 { "username", 0, POPT_ARG_STRING, &opt_username, OPT_USERNAME, "username"},
2434                 { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
2435                 { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
2436                 { "challenge", 0, POPT_ARG_STRING, &hex_challenge, OPT_CHALLENGE, "challenge (HEX encoded)"},
2437                 { "lm-response", 0, POPT_ARG_STRING, &hex_lm_response, OPT_LM, "LM Response to the challenge (HEX encoded)"},
2438                 { "nt-response", 0, POPT_ARG_STRING, &hex_nt_response, OPT_NT, "NT or NTLMv2 Response to the challenge (HEX encoded)"},
2439                 { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
2440                 { "request-lm-key", 0, POPT_ARG_NONE, &request_lm_key, OPT_LM_KEY, "Retrieve LM session key"},
2441                 { "request-nt-key", 0, POPT_ARG_NONE, &request_user_session_key, OPT_USER_SESSION_KEY, "Retrieve User (NT) session key"},
2442                 { "use-cached-creds", 0, POPT_ARG_NONE, &use_cached_creds, OPT_USE_CACHED_CREDS, "Use cached credentials if no password is given"},
2443                 { "diagnostics", 0, POPT_ARG_NONE, &diagnostics,
2444                   OPT_DIAGNOSTICS,
2445                   "Perform diagnostics on the authentication chain"},
2446                 { "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" },
2447                 { "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" },
2448                 POPT_COMMON_CONFIGFILE
2449                 POPT_COMMON_VERSION
2450                 POPT_TABLEEND
2451         };
2452
2453         /* Samba client initialisation */
2454         load_case_tables();
2455
2456         dbf = x_stderr;
2457
2458         /* Parse options */
2459
2460         pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
2461
2462         /* Parse command line options */
2463
2464         if (argc == 1) {
2465                 poptPrintHelp(pc, stderr, 0);
2466                 return 1;
2467         }
2468
2469         while((opt = poptGetNextOpt(pc)) != -1) {
2470                 /* Get generic config options like --configfile */
2471         }
2472
2473         poptFreeContext(pc);
2474
2475         if (!lp_load(get_dyn_CONFIGFILE(), True, False, False, True)) {
2476                 d_fprintf(stderr, "ntlm_auth: error opening config file %s. Error was %s\n",
2477                         get_dyn_CONFIGFILE(), strerror(errno));
2478                 exit(1);
2479         }
2480
2481         pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
2482                             POPT_CONTEXT_KEEP_FIRST);
2483
2484         while((opt = poptGetNextOpt(pc)) != -1) {
2485                 switch (opt) {
2486                 case OPT_CHALLENGE:
2487                         opt_challenge = strhex_to_data_blob(NULL, hex_challenge);
2488                         if (opt_challenge.length != 8) {
2489                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2490                                           hex_challenge,
2491                                           (int)opt_challenge.length);
2492                                 exit(1);
2493                         }
2494                         break;
2495                 case OPT_LM:
2496                         opt_lm_response = strhex_to_data_blob(NULL, hex_lm_response);
2497                         if (opt_lm_response.length != 24) {
2498                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2499                                           hex_lm_response,
2500                                           (int)opt_lm_response.length);
2501                                 exit(1);
2502                         }
2503                         break;
2504
2505                 case OPT_NT:
2506                         opt_nt_response = strhex_to_data_blob(NULL, hex_nt_response);
2507                         if (opt_nt_response.length < 24) {
2508                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2509                                           hex_nt_response,
2510                                           (int)opt_nt_response.length);
2511                                 exit(1);
2512                         }
2513                         break;
2514
2515                 case OPT_REQUIRE_MEMBERSHIP:
2516                         if (StrnCaseCmp("S-", require_membership_of, 2) == 0) {
2517                                 require_membership_of_sid = require_membership_of;
2518                         }
2519                         break;
2520                 }
2521         }
2522
2523         if (opt_username) {
2524                 char *domain = SMB_STRDUP(opt_username);
2525                 char *p = strchr_m(domain, *lp_winbind_separator());
2526                 if (p) {
2527                         opt_username = p+1;
2528                         *p = '\0';
2529                         if (opt_domain && !strequal(opt_domain, domain)) {
2530                                 x_fprintf(x_stderr, "Domain specified in username (%s) "
2531                                         "doesn't match specified domain (%s)!\n\n",
2532                                         domain, opt_domain);
2533                                 poptPrintHelp(pc, stderr, 0);
2534                                 exit(1);
2535                         }
2536                         opt_domain = domain;
2537                 } else {
2538                         SAFE_FREE(domain);
2539                 }
2540         }
2541
2542         /* Note: if opt_domain is "" then send no domain */
2543         if (opt_domain == NULL) {
2544                 opt_domain = get_winbind_domain();
2545         }
2546
2547         if (opt_workstation == NULL) {
2548                 opt_workstation = "";
2549         }
2550
2551         if (helper_protocol) {
2552                 int i;
2553                 for (i=0; i<NUM_HELPER_MODES; i++) {
2554                         if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
2555                                 squid_stream(stdio_helper_protocols[i].mode, stdio_helper_protocols[i].fn);
2556                                 exit(0);
2557                         }
2558                 }
2559                 x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol);
2560
2561                 for (i=0; i<NUM_HELPER_MODES; i++) {
2562                         x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name);
2563                 }
2564
2565                 exit(1);
2566         }
2567
2568         if (!opt_username || !*opt_username) {
2569                 x_fprintf(x_stderr, "username must be specified!\n\n");
2570                 poptPrintHelp(pc, stderr, 0);
2571                 exit(1);
2572         }
2573
2574         if (opt_challenge.length) {
2575                 if (!check_auth_crap()) {
2576                         exit(1);
2577                 }
2578                 exit(0);
2579         }
2580
2581         if (!opt_password) {
2582                 opt_password = getpass("password: ");
2583         }
2584
2585         if (diagnostics) {
2586                 if (!diagnose_ntlm_auth()) {
2587                         return 1;
2588                 }
2589         } else {
2590                 fstring user;
2591
2592                 fstr_sprintf(user, "%s%c%s", opt_domain, winbind_separator(), opt_username);
2593                 if (!check_plaintext_auth(user, opt_password, True)) {
2594                         return 1;
2595                 }
2596         }
2597
2598         /* Exit code */
2599
2600         poptFreeContext(pc);
2601         TALLOC_FREE(frame);
2602         return 0;
2603 }