source3/utils/ntlm_auth.c

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