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_int(struct ntlm_auth_state *state,
 782                                              char *buf, int length,
 783                                              TALLOC_CTX *mem_ctx,
 784                                              char **response)
 785 {
 786         DATA_BLOB request, reply;
 787         NTSTATUS nt_status;
 788
 789         if (strlen(buf) < 2) {
 790                 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
 791                 *response = talloc_strdup(mem_ctx, "BH NTLMSSP query invalid");
 792                 return;
 793         }
 794
 795         if (strlen(buf) > 3) {
 796                 if(strncmp(buf, "SF ", 3) == 0){
 797                         DEBUG(10, ("Setting flags to negotioate\n"));
 798                         TALLOC_FREE(state->want_feature_list);
 799                         state->want_feature_list = talloc_strdup(state->mem_ctx,
 800                                         buf+3);
 801                         *response = talloc_strdup(mem_ctx, "OK");
 802                         return;
 803                 }
 804                 request = base64_decode_data_blob(buf + 3);
 805         } else {
 806                 request = data_blob_null;
 807         }
 808
 809         if ((strncmp(buf, "PW ", 3) == 0)) {
 810                 /* The calling application wants us to use a local password
 811                  * (rather than winbindd) */
 812
 813                 opt_password = SMB_STRNDUP((const char *)request.data,
 814                                 request.length);
 815
 816                 if (opt_password == NULL) {
 817                         DEBUG(1, ("Out of memory\n"));
 818                         *response = talloc_strdup(mem_ctx, "BH Out of memory");
 819                         data_blob_free(&request);
 820                         return;
 821                 }
 822
 823                 *response = talloc_strdup(mem_ctx, "OK");
 824                 data_blob_free(&request);
 825                 return;
 826         }
 827
 828         if (strncmp(buf, "YR", 2) == 0) {
 829                 if (state->ntlmssp_state)
 830                         ntlmssp_end(&state->ntlmssp_state);
 831                 state->svr_state = SERVER_INITIAL;
 832         } else if (strncmp(buf, "KK", 2) == 0) {
 833                 /* No special preprocessing required */
 834         } else if (strncmp(buf, "GF", 2) == 0) {
 835                 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
 836
 837                 if (state->svr_state == SERVER_FINISHED) {
 838                         *response = talloc_asprintf(mem_ctx, "GF 0x%08x",
 839                                                  state->neg_flags);
 840                 }
 841                 else {
 842                         *response = talloc_strdup(mem_ctx, "BH\n");
 843                 }
 844                 data_blob_free(&request);
 845                 return;
 846         } else if (strncmp(buf, "GK", 2) == 0) {
 847                 DEBUG(10, ("Requested NTLMSSP session key\n"));
 848                 if(state->have_session_key) {
 849                         char *key64 = base64_encode_data_blob(state->mem_ctx,
 850                                         state->session_key);
 851                         *response = talloc_asprintf(mem_ctx, "GK %s",
 852                                                  key64 ? key64 : "<NULL>");
 853                         TALLOC_FREE(key64);
 854                 } else {
 855                         *response = talloc_strdup(mem_ctx, "BH");
 856                 }
 857
 858                 data_blob_free(&request);
 859                 return;
 860         } else {
 861                 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
 862                 *response = talloc_strdup(mem_ctx, "BH NTLMSSP query invalid");
 863                 return;
 864         }
 865
 866         if (!state->ntlmssp_state) {
 867                 nt_status = ntlm_auth_start_ntlmssp_server(
 868                                 &state->ntlmssp_state);
 869                 if (!NT_STATUS_IS_OK(nt_status)) {
 870                         *response = talloc_asprintf(
 871                                 mem_ctx, "BH %s", nt_errstr(nt_status));
 872                         return;
 873                 }
 874                 ntlmssp_want_feature_list(state->ntlmssp_state,
 875                                 state->want_feature_list);
 876         }
 877
 878         DEBUG(10, ("got NTLMSSP packet:\n"));
 879         dump_data(10, request.data, request.length);
 880
 881         nt_status = ntlmssp_update(state->ntlmssp_state, request, &reply);
 882
 883         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 884                 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
 885                                 reply);
 886                 *response = talloc_asprintf(mem_ctx, "TT %s", reply_base64);
 887                 TALLOC_FREE(reply_base64);
 888                 data_blob_free(&reply);
 889                 state->svr_state = SERVER_CHALLENGE;
 890                 DEBUG(10, ("NTLMSSP challenge\n"));
 891         } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
 892                 *response = talloc_asprintf(mem_ctx, "BH %s",
 893                                          nt_errstr(nt_status));
 894                 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
 895
 896                 ntlmssp_end(&state->ntlmssp_state);
 897         } else if (!NT_STATUS_IS_OK(nt_status)) {
 898                 *response = talloc_asprintf(mem_ctx, "NA %s",
 899                                          nt_errstr(nt_status));
 900                 DEBUG(10, ("NTLMSSP %s\n", nt_errstr(nt_status)));
 901         } else {
 902                 *response = talloc_asprintf(
 903                         mem_ctx, "AF %s",
 904                         (char *)state->ntlmssp_state->auth_context);
 905                 DEBUG(10, ("NTLMSSP OK!\n"));
 906
 907                 if(state->have_session_key)
 908                         data_blob_free(&state->session_key);
 909                 state->session_key = data_blob(
 910                                 state->ntlmssp_state->session_key.data,
 911                                 state->ntlmssp_state->session_key.length);
 912                 state->neg_flags = state->ntlmssp_state->neg_flags;
 913                 state->have_session_key = true;
 914                 state->svr_state = SERVER_FINISHED;
 915         }
 916
 917         data_blob_free(&request);
 918 }
 919
 920 static void manage_squid_ntlmssp_request(struct ntlm_auth_state *state,
 921                                          char *buf, int length)
 922 {
 923         char *response;
 924
 925         manage_squid_ntlmssp_request_int(state, buf, length,
 926                                          talloc_tos(), &response);
 927
 928         if (response == NULL) {
 929                 x_fprintf(x_stdout, "BH Out of memory\n");
 930                 return;
 931         }
 932         x_fprintf(x_stdout, "%s\n", response);
 933         TALLOC_FREE(response);
 934 }
 935
 936 static void manage_client_ntlmssp_request(struct ntlm_auth_state *state,
 937                                                 char *buf, int length)
 938 {
 939         DATA_BLOB request, reply;
 940         NTSTATUS nt_status;
 941
 942         if (!opt_username || !*opt_username) {
 943                 x_fprintf(x_stderr, "username must be specified!\n\n");
 944                 exit(1);
 945         }
 946
 947         if (strlen(buf) < 2) {
 948                 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
 949                 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
 950                 return;
 951         }
 952
 953         if (strlen(buf) > 3) {
 954                 if(strncmp(buf, "SF ", 3) == 0) {
 955                         DEBUG(10, ("Looking for flags to negotiate\n"));
 956                         talloc_free(state->want_feature_list);
 957                         state->want_feature_list = talloc_strdup(state->mem_ctx,
 958                                         buf+3);
 959                         x_fprintf(x_stdout, "OK\n");
 960                         return;
 961                 }
 962                 request = base64_decode_data_blob(buf + 3);
 963         } else {
 964                 request = data_blob_null;
 965         }
 966
 967         if (strncmp(buf, "PW ", 3) == 0) {
 968                 /* We asked for a password and obviously got it :-) */
 969
 970                 opt_password = SMB_STRNDUP((const char *)request.data,
 971                                 request.length);
 972
 973                 if (opt_password == NULL) {
 974                         DEBUG(1, ("Out of memory\n"));
 975                         x_fprintf(x_stdout, "BH Out of memory\n");
 976                         data_blob_free(&request);
 977                         return;
 978                 }
 979
 980                 x_fprintf(x_stdout, "OK\n");
 981                 data_blob_free(&request);
 982                 return;
 983         }
 984
 985         if (!state->ntlmssp_state && use_cached_creds) {
 986                 /* check whether cached credentials are usable. */
 987                 DATA_BLOB empty_blob = data_blob_null;
 988
 989                 nt_status = do_ccache_ntlm_auth(empty_blob, empty_blob, NULL);
 990                 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 991                         /* failed to use cached creds */
 992                         use_cached_creds = False;
 993                 }
 994         }
 995
 996         if (opt_password == NULL && !use_cached_creds) {
 997                 /* Request a password from the calling process.  After
 998                    sending it, the calling process should retry asking for the
 999                    negotiate. */
1000
1001                 DEBUG(10, ("Requesting password\n"));
1002                 x_fprintf(x_stdout, "PW\n");
1003                 return;
1004         }
1005
1006         if (strncmp(buf, "YR", 2) == 0) {
1007                 if (state->ntlmssp_state)
1008                         ntlmssp_end(&state->ntlmssp_state);
1009                 state->cli_state = CLIENT_INITIAL;
1010         } else if (strncmp(buf, "TT", 2) == 0) {
1011                 /* No special preprocessing required */
1012         } else if (strncmp(buf, "GF", 2) == 0) {
1013                 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
1014
1015                 if(state->cli_state == CLIENT_FINISHED) {
1016                         x_fprintf(x_stdout, "GF 0x%08x\n", state->neg_flags);
1017                 }
1018                 else {
1019                         x_fprintf(x_stdout, "BH\n");
1020                 }
1021
1022                 data_blob_free(&request);
1023                 return;
1024         } else if (strncmp(buf, "GK", 2) == 0 ) {
1025                 DEBUG(10, ("Requested session key\n"));
1026
1027                 if(state->cli_state == CLIENT_FINISHED) {
1028                         char *key64 = base64_encode_data_blob(state->mem_ctx,
1029                                         state->session_key);
1030                         x_fprintf(x_stdout, "GK %s\n", key64?key64:"<NULL>");
1031                         TALLOC_FREE(key64);
1032                 }
1033                 else {
1034                         x_fprintf(x_stdout, "BH\n");
1035                 }
1036
1037                 data_blob_free(&request);
1038                 return;
1039         } else {
1040                 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
1041                 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
1042                 return;
1043         }
1044
1045         if (!state->ntlmssp_state) {
1046                 nt_status = ntlm_auth_start_ntlmssp_client(
1047                                 &state->ntlmssp_state);
1048                 if (!NT_STATUS_IS_OK(nt_status)) {
1049                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
1050                         return;
1051                 }
1052                 ntlmssp_want_feature_list(state->ntlmssp_state,
1053                                 state->want_feature_list);
1054                 state->initial_message = data_blob_null;
1055         }
1056
1057         DEBUG(10, ("got NTLMSSP packet:\n"));
1058         dump_data(10, request.data, request.length);
1059
1060         if (use_cached_creds && !opt_password &&
1061                         (state->cli_state == CLIENT_RESPONSE)) {
1062                 nt_status = do_ccache_ntlm_auth(state->initial_message, request,
1063                                 &reply);
1064         } else {
1065                 nt_status = ntlmssp_update(state->ntlmssp_state, request,
1066                                 &reply);
1067         }
1068
1069         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1070                 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
1071                                 reply);
1072                 if (state->cli_state == CLIENT_INITIAL) {
1073                         x_fprintf(x_stdout, "YR %s\n", reply_base64);
1074                         state->initial_message = reply;
1075                         state->cli_state = CLIENT_RESPONSE;
1076                 } else {
1077                         x_fprintf(x_stdout, "KK %s\n", reply_base64);
1078                         data_blob_free(&reply);
1079                 }
1080                 TALLOC_FREE(reply_base64);
1081                 DEBUG(10, ("NTLMSSP challenge\n"));
1082         } else if (NT_STATUS_IS_OK(nt_status)) {
1083                 char *reply_base64 = base64_encode_data_blob(talloc_tos(),
1084                                 reply);
1085                 x_fprintf(x_stdout, "AF %s\n", reply_base64);
1086                 TALLOC_FREE(reply_base64);
1087
1088                 if(state->have_session_key)
1089                         data_blob_free(&state->session_key);
1090
1091                 state->session_key = data_blob(
1092                                 state->ntlmssp_state->session_key.data,
1093                                 state->ntlmssp_state->session_key.length);
1094                 state->neg_flags = state->ntlmssp_state->neg_flags;
1095                 state->have_session_key = true;
1096
1097                 DEBUG(10, ("NTLMSSP OK!\n"));
1098                 state->cli_state = CLIENT_FINISHED;
1099                 if (state->ntlmssp_state)
1100                         ntlmssp_end(&state->ntlmssp_state);
1101         } else {
1102                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
1103                 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
1104                 state->cli_state = CLIENT_ERROR;
1105                 if (state->ntlmssp_state)
1106                         ntlmssp_end(&state->ntlmssp_state);
1107         }
1108
1109         data_blob_free(&request);
1110 }
1111
1112 static void manage_squid_basic_request(struct ntlm_auth_state *state,
1113                                         char *buf, int length)
1114 {
1115         char *user, *pass;
1116         user=buf;
1117
1118         pass=(char *)memchr(buf,' ',length);
1119         if (!pass) {
1120                 DEBUG(2, ("Password not found. Denying access\n"));
1121                 x_fprintf(x_stdout, "ERR\n");
1122                 return;
1123         }
1124         *pass='\0';
1125         pass++;
1126
1127         if (state->helper_mode == SQUID_2_5_BASIC) {
1128                 rfc1738_unescape(user);
1129                 rfc1738_unescape(pass);
1130         }
1131
1132         if (check_plaintext_auth(user, pass, False)) {
1133                 x_fprintf(x_stdout, "OK\n");
1134         } else {
1135                 x_fprintf(x_stdout, "ERR\n");
1136         }
1137 }
1138
1139 static void offer_gss_spnego_mechs(void) {
1140
1141         DATA_BLOB token;
1142         struct spnego_data spnego;
1143         ssize_t len;
1144         char *reply_base64;
1145         TALLOC_CTX *ctx = talloc_tos();
1146         char *principal;
1147         char *myname_lower;
1148
1149         ZERO_STRUCT(spnego);
1150
1151         myname_lower = talloc_strdup(ctx, global_myname());
1152         if (!myname_lower) {
1153                 return;
1154         }
1155         strlower_m(myname_lower);
1156
1157         principal = talloc_asprintf(ctx, "%s$@%s", myname_lower, lp_realm());
1158         if (!principal) {
1159                 return;
1160         }
1161
1162         /* Server negTokenInit (mech offerings) */
1163         spnego.type = SPNEGO_NEG_TOKEN_INIT;
1164         spnego.negTokenInit.mechTypes = talloc_array(ctx, const char *, 3);
1165 #ifdef HAVE_KRB5
1166         spnego.negTokenInit.mechTypes[0] = talloc_strdup(ctx, OID_KERBEROS5_OLD);
1167         spnego.negTokenInit.mechTypes[1] = talloc_strdup(ctx, OID_NTLMSSP);
1168         spnego.negTokenInit.mechTypes[2] = NULL;
1169 #else
1170         spnego.negTokenInit.mechTypes[0] = talloc_strdup(ctx, OID_NTLMSSP);
1171         spnego.negTokenInit.mechTypes[1] = NULL;
1172 #endif
1173
1174
1175         spnego.negTokenInit.mechListMIC = data_blob_talloc(ctx, principal,
1176                                                     strlen(principal));
1177
1178         len = spnego_write_data(ctx, &token, &spnego);
1179         spnego_free_data(&spnego);
1180
1181         if (len == -1) {
1182                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1183                 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1184                 return;
1185         }
1186
1187         reply_base64 = base64_encode_data_blob(talloc_tos(), token);
1188         x_fprintf(x_stdout, "TT %s *\n", reply_base64);
1189
1190         TALLOC_FREE(reply_base64);
1191         data_blob_free(&token);
1192         DEBUG(10, ("sent SPNEGO negTokenInit\n"));
1193         return;
1194 }
1195
1196 static bool _spnego_parse_krb5_wrap(TALLOC_CTX *ctx, DATA_BLOB blob, DATA_BLOB *ticket, uint8 tok_id[2])
1197 {
1198         bool ret;
1199         ASN1_DATA *data;
1200         int data_remaining;
1201
1202         data = asn1_init(talloc_tos());
1203         if (data == NULL) {
1204                 return false;
1205         }
1206
1207         asn1_load(data, blob);
1208         asn1_start_tag(data, ASN1_APPLICATION(0));
1209         asn1_check_OID(data, OID_KERBEROS5);
1210
1211         data_remaining = asn1_tag_remaining(data);
1212
1213         if (data_remaining < 3) {
1214                 data->has_error = True;
1215         } else {
1216                 asn1_read(data, tok_id, 2);
1217                 data_remaining -= 2;
1218                 *ticket = data_blob_talloc(ctx, NULL, data_remaining);
1219                 asn1_read(data, ticket->data, ticket->length);
1220         }
1221
1222         asn1_end_tag(data);
1223
1224         ret = !data->has_error;
1225
1226         if (data->has_error) {
1227                 data_blob_free(ticket);
1228         }
1229
1230         asn1_free(data);
1231
1232         return ret;
1233 }
1234
1235 static void manage_gss_spnego_request(struct ntlm_auth_state *state,
1236                                         char *buf, int length)
1237 {
1238         static NTLMSSP_STATE *ntlmssp_state = NULL;
1239         struct spnego_data request, response;
1240         DATA_BLOB token;
1241         NTSTATUS status;
1242         ssize_t len;
1243         TALLOC_CTX *ctx = talloc_tos();
1244
1245         char *user = NULL;
1246         char *domain = NULL;
1247
1248         const char *reply_code;
1249         char       *reply_base64;
1250         char *reply_argument = NULL;
1251
1252         if (strlen(buf) < 2) {
1253                 DEBUG(1, ("SPENGO query [%s] invalid\n", buf));
1254                 x_fprintf(x_stdout, "BH SPENGO query invalid\n");
1255                 return;
1256         }
1257
1258         if (strncmp(buf, "YR", 2) == 0) {
1259                 if (ntlmssp_state)
1260                         ntlmssp_end(&ntlmssp_state);
1261         } else if (strncmp(buf, "KK", 2) == 0) {
1262                 ;
1263         } else {
1264                 DEBUG(1, ("SPENGO query [%s] invalid\n", buf));
1265                 x_fprintf(x_stdout, "BH SPENGO query invalid\n");
1266                 return;
1267         }
1268
1269         if ( (strlen(buf) == 2)) {
1270
1271                 /* no client data, get the negTokenInit offering
1272                    mechanisms */
1273
1274                 offer_gss_spnego_mechs();
1275                 return;
1276         }
1277
1278         /* All subsequent requests have a blob. This might be negTokenInit or negTokenTarg */
1279
1280         if (strlen(buf) <= 3) {
1281                 DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
1282                 x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
1283                 return;
1284         }
1285
1286         token = base64_decode_data_blob(buf + 3);
1287
1288         if ((token.length >= 7)
1289             && (strncmp((char *)token.data, "NTLMSSP", 7) == 0)) {
1290                 char *reply;
1291
1292                 data_blob_free(&token);
1293
1294                 DEBUG(10, ("Could not parse GSS-SPNEGO, trying raw "
1295                            "ntlmssp\n"));
1296
1297                 manage_squid_ntlmssp_request_int(state, buf, length,
1298                                                  talloc_tos(), &reply);
1299                 if (reply == NULL) {
1300                         x_fprintf(x_stdout, "BH Out of memory\n");
1301                         return;
1302                 }
1303
1304                 if (strncmp(reply, "AF ", 3) == 0) {
1305                         x_fprintf(x_stdout, "AF * %s\n", reply+3);
1306                 } else {
1307                         x_fprintf(x_stdout, "%s *\n", reply);
1308                 }
1309
1310                 TALLOC_FREE(reply);
1311                 return;
1312         }
1313
1314         len = spnego_read_data(ctx, token, &request);
1315         data_blob_free(&token);
1316
1317         if (len == -1) {
1318                 DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
1319                 x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
1320                 return;
1321         }
1322
1323         if (request.type == SPNEGO_NEG_TOKEN_INIT) {
1324
1325                 /* Second request from Client. This is where the
1326                    client offers its mechanism to use. */
1327
1328                 if ( (request.negTokenInit.mechTypes == NULL) ||
1329                      (request.negTokenInit.mechTypes[0] == NULL) ) {
1330                         DEBUG(1, ("Client did not offer any mechanism\n"));
1331                         x_fprintf(x_stdout, "BH Client did not offer any "
1332                                             "mechanism\n");
1333                         return;
1334                 }
1335
1336                 status = NT_STATUS_UNSUCCESSFUL;
1337                 if (strcmp(request.negTokenInit.mechTypes[0], OID_NTLMSSP) == 0) {
1338
1339                         if ( request.negTokenInit.mechToken.data == NULL ) {
1340                                 DEBUG(1, ("Client did not provide NTLMSSP data\n"));
1341                                 x_fprintf(x_stdout, "BH Client did not provide "
1342                                                     "NTLMSSP data\n");
1343                                 return;
1344                         }
1345
1346                         if ( ntlmssp_state != NULL ) {
1347                                 DEBUG(1, ("Client wants a new NTLMSSP challenge, but "
1348                                           "already got one\n"));
1349                                 x_fprintf(x_stdout, "BH Client wants a new "
1350                                                     "NTLMSSP challenge, but "
1351                                                     "already got one\n");
1352                                 ntlmssp_end(&ntlmssp_state);
1353                                 return;
1354                         }
1355
1356                         if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
1357                                 x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1358                                 return;
1359                         }
1360
1361                         DEBUG(10, ("got NTLMSSP packet:\n"));
1362                         dump_data(10, request.negTokenInit.mechToken.data,
1363                                   request.negTokenInit.mechToken.length);
1364
1365                         response.type = SPNEGO_NEG_TOKEN_TARG;
1366                         response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_NTLMSSP);
1367                         response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1368
1369                         status = ntlmssp_update(ntlmssp_state,
1370                                                        request.negTokenInit.mechToken,
1371                                                        &response.negTokenTarg.responseToken);
1372                 }
1373
1374 #ifdef HAVE_KRB5
1375                 if (strcmp(request.negTokenInit.mechTypes[0], OID_KERBEROS5_OLD) == 0) {
1376
1377                         TALLOC_CTX *mem_ctx = talloc_init("manage_gss_spnego_request");
1378                         char *principal;
1379                         DATA_BLOB ap_rep;
1380                         DATA_BLOB session_key;
1381                         struct PAC_DATA *pac_data = NULL;
1382                         DATA_BLOB ticket;
1383                         uint8_t tok_id[2];
1384
1385                         if ( request.negTokenInit.mechToken.data == NULL ) {
1386                                 DEBUG(1, ("Client did not provide Kerberos data\n"));
1387                                 x_fprintf(x_stdout, "BH Client did not provide "
1388                                                     "Kerberos data\n");
1389                                 return;
1390                         }
1391
1392                         dump_data(10, request.negTokenInit.mechToken.data,
1393                                   request.negTokenInit.mechToken.length);
1394
1395                         if (!_spnego_parse_krb5_wrap(ctx, request.negTokenInit.mechToken,
1396                                                     &ticket, tok_id)) {
1397                                 DEBUG(1, ("spnego_parse_krb5_wrap failed\n"));
1398                                 x_fprintf(x_stdout, "BH spnego_parse_krb5_wrap failed\n");
1399                                 return;
1400                         }
1401
1402                         response.type = SPNEGO_NEG_TOKEN_TARG;
1403                         response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_KERBEROS5_OLD);
1404                         response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1405                         response.negTokenTarg.responseToken = data_blob_talloc(ctx, NULL, 0);
1406
1407                         status = ads_verify_ticket(mem_ctx, lp_realm(), 0,
1408                                                    &ticket,
1409                                                    &principal, &pac_data, &ap_rep,
1410                                                    &session_key, True);
1411
1412                         /* Now in "principal" we have the name we are
1413                            authenticated as. */
1414
1415                         if (NT_STATUS_IS_OK(status)) {
1416
1417                                 domain = strchr_m(principal, '@');
1418
1419                                 if (domain == NULL) {
1420                                         DEBUG(1, ("Did not get a valid principal "
1421                                                   "from ads_verify_ticket\n"));
1422                                         x_fprintf(x_stdout, "BH Did not get a "
1423                                                   "valid principal from "
1424                                                   "ads_verify_ticket\n");
1425                                         return;
1426                                 }
1427
1428                                 *domain++ = '\0';
1429                                 domain = SMB_STRDUP(domain);
1430                                 user = SMB_STRDUP(principal);
1431
1432                                 data_blob_free(&ap_rep);
1433                         }
1434
1435                         TALLOC_FREE(mem_ctx);
1436                 }
1437 #endif
1438
1439         } else {
1440
1441                 if ( (request.negTokenTarg.supportedMech == NULL) ||
1442                      ( strcmp(request.negTokenTarg.supportedMech, OID_NTLMSSP) != 0 ) ) {
1443                         /* Kerberos should never send a negTokenTarg, OID_NTLMSSP
1444                            is the only one we support that sends this stuff */
1445                         DEBUG(1, ("Got a negTokenTarg for something non-NTLMSSP: %s\n",
1446                                   request.negTokenTarg.supportedMech));
1447                         x_fprintf(x_stdout, "BH Got a negTokenTarg for "
1448                                             "something non-NTLMSSP\n");
1449                         return;
1450                 }
1451
1452                 if (request.negTokenTarg.responseToken.data == NULL) {
1453                         DEBUG(1, ("Got a negTokenTarg without a responseToken!\n"));
1454                         x_fprintf(x_stdout, "BH Got a negTokenTarg without a "
1455                                             "responseToken!\n");
1456                         return;
1457                 }
1458
1459                 status = ntlmssp_update(ntlmssp_state,
1460                                                request.negTokenTarg.responseToken,
1461                                                &response.negTokenTarg.responseToken);
1462
1463                 response.type = SPNEGO_NEG_TOKEN_TARG;
1464                 response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_NTLMSSP);
1465                 response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1466
1467                 if (NT_STATUS_IS_OK(status)) {
1468                         user = SMB_STRDUP(ntlmssp_state->user);
1469                         domain = SMB_STRDUP(ntlmssp_state->domain);
1470                         ntlmssp_end(&ntlmssp_state);
1471                 }
1472         }
1473
1474         spnego_free_data(&request);
1475
1476         if (NT_STATUS_IS_OK(status)) {
1477                 response.negTokenTarg.negResult = SPNEGO_ACCEPT_COMPLETED;
1478                 reply_code = "AF";
1479                 reply_argument = talloc_asprintf(ctx, "%s\\%s", domain, user);
1480         } else if (NT_STATUS_EQUAL(status,
1481                                    NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1482                 response.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1483                 reply_code = "TT";
1484                 reply_argument = talloc_strdup(ctx, "*");
1485         } else {
1486                 response.negTokenTarg.negResult = SPNEGO_REJECT;
1487                 reply_code = "NA";
1488                 reply_argument = talloc_strdup(ctx, nt_errstr(status));
1489         }
1490
1491         if (!reply_argument) {
1492                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1493                 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1494                 return;
1495         }
1496
1497         SAFE_FREE(user);
1498         SAFE_FREE(domain);
1499
1500         len = spnego_write_data(ctx, &token, &response);
1501         spnego_free_data(&response);
1502
1503         if (len == -1) {
1504                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1505                 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1506                 return;
1507         }
1508
1509         reply_base64 = base64_encode_data_blob(talloc_tos(), token);
1510
1511         x_fprintf(x_stdout, "%s %s %s\n",
1512                   reply_code, reply_base64, reply_argument);
1513
1514         TALLOC_FREE(reply_base64);
1515         data_blob_free(&token);
1516
1517         return;
1518 }
1519
1520 static NTLMSSP_STATE *client_ntlmssp_state = NULL;
1521
1522 static bool manage_client_ntlmssp_init(struct spnego_data spnego)
1523 {
1524         NTSTATUS status;
1525         DATA_BLOB null_blob = data_blob_null;
1526         DATA_BLOB to_server;
1527         char *to_server_base64;
1528         const char *my_mechs[] = {OID_NTLMSSP, NULL};
1529         TALLOC_CTX *ctx = talloc_tos();
1530
1531         DEBUG(10, ("Got spnego negTokenInit with NTLMSSP\n"));
1532
1533         if (client_ntlmssp_state != NULL) {
1534                 DEBUG(1, ("Request for initial SPNEGO request where "
1535                           "we already have a state\n"));
1536                 return False;
1537         }
1538
1539         if (!client_ntlmssp_state) {
1540                 if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_client(&client_ntlmssp_state))) {
1541                         x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1542                         return False;
1543                 }
1544         }
1545
1546
1547         if (opt_password == NULL) {
1548
1549                 /* Request a password from the calling process.  After
1550                    sending it, the calling process should retry with
1551                    the negTokenInit. */
1552
1553                 DEBUG(10, ("Requesting password\n"));
1554                 x_fprintf(x_stdout, "PW\n");
1555                 return True;
1556         }
1557
1558         spnego.type = SPNEGO_NEG_TOKEN_INIT;
1559         spnego.negTokenInit.mechTypes = my_mechs;
1560         spnego.negTokenInit.reqFlags = data_blob_null;
1561         spnego.negTokenInit.reqFlagsPadding = 0;
1562         spnego.negTokenInit.mechListMIC = null_blob;
1563
1564         status = ntlmssp_update(client_ntlmssp_state, null_blob,
1565                                        &spnego.negTokenInit.mechToken);
1566
1567         if ( !(NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) ||
1568                         NT_STATUS_IS_OK(status)) ) {
1569                 DEBUG(1, ("Expected OK or MORE_PROCESSING_REQUIRED, got: %s\n",
1570                           nt_errstr(status)));
1571                 ntlmssp_end(&client_ntlmssp_state);
1572                 return False;
1573         }
1574
1575         spnego_write_data(ctx, &to_server, &spnego);
1576         data_blob_free(&spnego.negTokenInit.mechToken);
1577
1578         to_server_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1579         data_blob_free(&to_server);
1580         x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1581         TALLOC_FREE(to_server_base64);
1582         return True;
1583 }
1584
1585 static void manage_client_ntlmssp_targ(struct spnego_data spnego)
1586 {
1587         NTSTATUS status;
1588         DATA_BLOB null_blob = data_blob_null;
1589         DATA_BLOB request;
1590         DATA_BLOB to_server;
1591         char *to_server_base64;
1592         TALLOC_CTX *ctx = talloc_tos();
1593
1594         DEBUG(10, ("Got spnego negTokenTarg with NTLMSSP\n"));
1595
1596         if (client_ntlmssp_state == NULL) {
1597                 DEBUG(1, ("Got NTLMSSP tArg without a client state\n"));
1598                 x_fprintf(x_stdout, "BH Got NTLMSSP tArg without a client state\n");
1599                 return;
1600         }
1601
1602         if (spnego.negTokenTarg.negResult == SPNEGO_REJECT) {
1603                 x_fprintf(x_stdout, "NA\n");
1604                 ntlmssp_end(&client_ntlmssp_state);
1605                 return;
1606         }
1607
1608         if (spnego.negTokenTarg.negResult == SPNEGO_ACCEPT_COMPLETED) {
1609                 x_fprintf(x_stdout, "AF\n");
1610                 ntlmssp_end(&client_ntlmssp_state);
1611                 return;
1612         }
1613
1614         status = ntlmssp_update(client_ntlmssp_state,
1615                                        spnego.negTokenTarg.responseToken,
1616                                        &request);
1617
1618         if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1619                 DEBUG(1, ("Expected MORE_PROCESSING_REQUIRED from "
1620                           "ntlmssp_client_update, got: %s\n",
1621                           nt_errstr(status)));
1622                 x_fprintf(x_stdout, "BH Expected MORE_PROCESSING_REQUIRED from "
1623                                     "ntlmssp_client_update\n");
1624                 data_blob_free(&request);
1625                 ntlmssp_end(&client_ntlmssp_state);
1626                 return;
1627         }
1628
1629         spnego.type = SPNEGO_NEG_TOKEN_TARG;
1630         spnego.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1631         spnego.negTokenTarg.supportedMech = (char *)OID_NTLMSSP;
1632         spnego.negTokenTarg.responseToken = request;
1633         spnego.negTokenTarg.mechListMIC = null_blob;
1634
1635         spnego_write_data(ctx, &to_server, &spnego);
1636         data_blob_free(&request);
1637
1638         to_server_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1639         data_blob_free(&to_server);
1640         x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1641         TALLOC_FREE(to_server_base64);
1642         return;
1643 }
1644
1645 #ifdef HAVE_KRB5
1646
1647 static bool manage_client_krb5_init(struct spnego_data spnego)
1648 {
1649         char *principal;
1650         DATA_BLOB tkt, to_server;
1651         DATA_BLOB session_key_krb5 = data_blob_null;
1652         struct spnego_data reply;
1653         char *reply_base64;
1654         int retval;
1655
1656         const char *my_mechs[] = {OID_KERBEROS5_OLD, NULL};
1657         ssize_t len;
1658         TALLOC_CTX *ctx = talloc_tos();
1659
1660         if ( (spnego.negTokenInit.mechListMIC.data == NULL) ||
1661              (spnego.negTokenInit.mechListMIC.length == 0) ) {
1662                 DEBUG(1, ("Did not get a principal for krb5\n"));
1663                 return False;
1664         }
1665
1666         principal = (char *)SMB_MALLOC(
1667                 spnego.negTokenInit.mechListMIC.length+1);
1668
1669         if (principal == NULL) {
1670                 DEBUG(1, ("Could not malloc principal\n"));
1671                 return False;
1672         }
1673
1674         memcpy(principal, spnego.negTokenInit.mechListMIC.data,
1675                spnego.negTokenInit.mechListMIC.length);
1676         principal[spnego.negTokenInit.mechListMIC.length] = '\0';
1677
1678         retval = cli_krb5_get_ticket(principal, 0, &tkt, &session_key_krb5, 0, NULL, NULL, NULL);
1679
1680         if (retval) {
1681                 char *user = NULL;
1682
1683                 /* Let's try to first get the TGT, for that we need a
1684                    password. */
1685
1686                 if (opt_password == NULL) {
1687                         DEBUG(10, ("Requesting password\n"));
1688                         x_fprintf(x_stdout, "PW\n");
1689                         return True;
1690                 }
1691
1692                 user = talloc_asprintf(talloc_tos(), "%s@%s", opt_username, opt_domain);
1693                 if (!user) {
1694                         return false;
1695                 }
1696
1697                 if ((retval = kerberos_kinit_password(user, opt_password, 0, NULL))) {
1698                         DEBUG(10, ("Requesting TGT failed: %s\n", error_message(retval)));
1699                         return False;
1700                 }
1701
1702                 retval = cli_krb5_get_ticket(principal, 0, &tkt, &session_key_krb5, 0, NULL, NULL, NULL);
1703
1704                 if (retval) {
1705                         DEBUG(10, ("Kinit suceeded, but getting a ticket failed: %s\n", error_message(retval)));
1706                         return False;
1707                 }
1708         }
1709
1710         data_blob_free(&session_key_krb5);
1711
1712         ZERO_STRUCT(reply);
1713
1714         reply.type = SPNEGO_NEG_TOKEN_INIT;
1715         reply.negTokenInit.mechTypes = my_mechs;
1716         reply.negTokenInit.reqFlags = data_blob_null;
1717         reply.negTokenInit.reqFlagsPadding = 0;
1718         reply.negTokenInit.mechToken = tkt;
1719         reply.negTokenInit.mechListMIC = data_blob_null;
1720
1721         len = spnego_write_data(ctx, &to_server, &reply);
1722         data_blob_free(&tkt);
1723
1724         if (len == -1) {
1725                 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1726                 return False;
1727         }
1728
1729         reply_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1730         x_fprintf(x_stdout, "KK %s *\n", reply_base64);
1731
1732         TALLOC_FREE(reply_base64);
1733         data_blob_free(&to_server);
1734         DEBUG(10, ("sent GSS-SPNEGO KERBEROS5 negTokenInit\n"));
1735         return True;
1736 }
1737
1738 static void manage_client_krb5_targ(struct spnego_data spnego)
1739 {
1740         switch (spnego.negTokenTarg.negResult) {
1741         case SPNEGO_ACCEPT_INCOMPLETE:
1742                 DEBUG(1, ("Got a Kerberos negTokenTarg with ACCEPT_INCOMPLETE\n"));
1743                 x_fprintf(x_stdout, "BH Got a Kerberos negTokenTarg with "
1744                                     "ACCEPT_INCOMPLETE\n");
1745                 break;
1746         case SPNEGO_ACCEPT_COMPLETED:
1747                 DEBUG(10, ("Accept completed\n"));
1748                 x_fprintf(x_stdout, "AF\n");
1749                 break;
1750         case SPNEGO_REJECT:
1751                 DEBUG(10, ("Rejected\n"));
1752                 x_fprintf(x_stdout, "NA\n");
1753                 break;
1754         default:
1755                 DEBUG(1, ("Got an invalid negTokenTarg\n"));
1756                 x_fprintf(x_stdout, "AF\n");
1757         }
1758 }
1759
1760 #endif
1761
1762 static void manage_gss_spnego_client_request(struct ntlm_auth_state *state,
1763                                                 char *buf, int length)
1764 {
1765         DATA_BLOB request;
1766         struct spnego_data spnego;
1767         ssize_t len;
1768         TALLOC_CTX *ctx = talloc_tos();
1769
1770         if (!opt_username || !*opt_username) {
1771                 x_fprintf(x_stderr, "username must be specified!\n\n");
1772                 exit(1);
1773         }
1774
1775         if (strlen(buf) <= 3) {
1776                 DEBUG(1, ("SPNEGO query [%s] too short\n", buf));
1777                 x_fprintf(x_stdout, "BH SPNEGO query too short\n");
1778                 return;
1779         }
1780
1781         request = base64_decode_data_blob(buf+3);
1782
1783         if (strncmp(buf, "PW ", 3) == 0) {
1784
1785                 /* We asked for a password and obviously got it :-) */
1786
1787                 opt_password = SMB_STRNDUP((const char *)request.data, request.length);
1788
1789                 if (opt_password == NULL) {
1790                         DEBUG(1, ("Out of memory\n"));
1791                         x_fprintf(x_stdout, "BH Out of memory\n");
1792                         data_blob_free(&request);
1793                         return;
1794                 }
1795
1796                 x_fprintf(x_stdout, "OK\n");
1797                 data_blob_free(&request);
1798                 return;
1799         }
1800
1801         if ( (strncmp(buf, "TT ", 3) != 0) &&
1802              (strncmp(buf, "AF ", 3) != 0) &&
1803              (strncmp(buf, "NA ", 3) != 0) ) {
1804                 DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
1805                 x_fprintf(x_stdout, "BH SPNEGO request invalid\n");
1806                 data_blob_free(&request);
1807                 return;
1808         }
1809
1810         /* So we got a server challenge to generate a SPNEGO
1811            client-to-server request... */
1812
1813         len = spnego_read_data(ctx, request, &spnego);
1814         data_blob_free(&request);
1815
1816         if (len == -1) {
1817                 DEBUG(1, ("Could not read SPNEGO data for [%s]\n", buf));
1818                 x_fprintf(x_stdout, "BH Could not read SPNEGO data\n");
1819                 return;
1820         }
1821
1822         if (spnego.type == SPNEGO_NEG_TOKEN_INIT) {
1823
1824                 /* The server offers a list of mechanisms */
1825
1826                 const char **mechType = (const char **)spnego.negTokenInit.mechTypes;
1827
1828                 while (*mechType != NULL) {
1829
1830 #ifdef HAVE_KRB5
1831                         if ( (strcmp(*mechType, OID_KERBEROS5_OLD) == 0) ||
1832                              (strcmp(*mechType, OID_KERBEROS5) == 0) ) {
1833                                 if (manage_client_krb5_init(spnego))
1834                                         goto out;
1835                         }
1836 #endif
1837
1838                         if (strcmp(*mechType, OID_NTLMSSP) == 0) {
1839                                 if (manage_client_ntlmssp_init(spnego))
1840                                         goto out;
1841                         }
1842
1843                         mechType++;
1844                 }
1845
1846                 DEBUG(1, ("Server offered no compatible mechanism\n"));
1847                 x_fprintf(x_stdout, "BH Server offered no compatible mechanism\n");
1848                 return;
1849         }
1850
1851         if (spnego.type == SPNEGO_NEG_TOKEN_TARG) {
1852
1853                 if (spnego.negTokenTarg.supportedMech == NULL) {
1854                         /* On accept/reject Windows does not send the
1855                            mechanism anymore. Handle that here and
1856                            shut down the mechanisms. */
1857
1858                         switch (spnego.negTokenTarg.negResult) {
1859                         case SPNEGO_ACCEPT_COMPLETED:
1860                                 x_fprintf(x_stdout, "AF\n");
1861                                 break;
1862                         case SPNEGO_REJECT:
1863                                 x_fprintf(x_stdout, "NA\n");
1864                                 break;
1865                         default:
1866                                 DEBUG(1, ("Got a negTokenTarg with no mech and an "
1867                                           "unknown negResult: %d\n",
1868                                           spnego.negTokenTarg.negResult));
1869                                 x_fprintf(x_stdout, "BH Got a negTokenTarg with"
1870                                                     " no mech and an unknown "
1871                                                     "negResult\n");
1872                         }
1873
1874                         ntlmssp_end(&client_ntlmssp_state);
1875                         goto out;
1876                 }
1877
1878                 if (strcmp(spnego.negTokenTarg.supportedMech,
1879                            OID_NTLMSSP) == 0) {
1880                         manage_client_ntlmssp_targ(spnego);
1881                         goto out;
1882                 }
1883
1884 #if HAVE_KRB5
1885                 if (strcmp(spnego.negTokenTarg.supportedMech,
1886                            OID_KERBEROS5_OLD) == 0) {
1887                         manage_client_krb5_targ(spnego);
1888                         goto out;
1889                 }
1890 #endif
1891
1892         }
1893
1894         DEBUG(1, ("Got an SPNEGO token I could not handle [%s]!\n", buf));
1895         x_fprintf(x_stdout, "BH Got an SPNEGO token I could not handle\n");
1896         return;
1897
1898  out:
1899         spnego_free_data(&spnego);
1900         return;
1901 }
1902
1903 static void manage_ntlm_server_1_request(struct ntlm_auth_state *state,
1904                                                 char *buf, int length)
1905 {
1906         char *request, *parameter;
1907         static DATA_BLOB challenge;
1908         static DATA_BLOB lm_response;
1909         static DATA_BLOB nt_response;
1910         static char *full_username;
1911         static char *username;
1912         static char *domain;
1913         static char *plaintext_password;
1914         static bool ntlm_server_1_user_session_key;
1915         static bool ntlm_server_1_lm_session_key;
1916
1917         if (strequal(buf, ".")) {
1918                 if (!full_username && !username) {
1919                         x_fprintf(x_stdout, "Error: No username supplied!\n");
1920                 } else if (plaintext_password) {
1921                         /* handle this request as plaintext */
1922                         if (!full_username) {
1923                                 if (asprintf(&full_username, "%s%c%s", domain, winbind_separator(), username) == -1) {
1924                                         x_fprintf(x_stdout, "Error: Out of memory in asprintf!\n.\n");
1925                                         return;
1926                                 }
1927                         }
1928                         if (check_plaintext_auth(full_username, plaintext_password, False)) {
1929                                 x_fprintf(x_stdout, "Authenticated: Yes\n");
1930                         } else {
1931                                 x_fprintf(x_stdout, "Authenticated: No\n");
1932                         }
1933                 } else if (!lm_response.data && !nt_response.data) {
1934                         x_fprintf(x_stdout, "Error: No password supplied!\n");
1935                 } else if (!challenge.data) {
1936                         x_fprintf(x_stdout, "Error: No lanman-challenge supplied!\n");
1937                 } else {
1938                         char *error_string = NULL;
1939                         uchar lm_key[8];
1940                         uchar user_session_key[16];
1941                         uint32 flags = 0;
1942
1943                         if (full_username && !username) {
1944                                 fstring fstr_user;
1945                                 fstring fstr_domain;
1946
1947                                 if (!parse_ntlm_auth_domain_user(full_username, fstr_user, fstr_domain)) {
1948                                         /* username might be 'tainted', don't print into our new-line deleimianted stream */
1949                                         x_fprintf(x_stdout, "Error: Could not parse into domain and username\n");
1950                                 }
1951                                 SAFE_FREE(username);
1952                                 SAFE_FREE(domain);
1953                                 username = smb_xstrdup(fstr_user);
1954                                 domain = smb_xstrdup(fstr_domain);
1955                         }
1956
1957                         if (!domain) {
1958                                 domain = smb_xstrdup(get_winbind_domain());
1959                         }
1960
1961                         if (ntlm_server_1_lm_session_key)
1962                                 flags |= WBFLAG_PAM_LMKEY;
1963
1964                         if (ntlm_server_1_user_session_key)
1965                                 flags |= WBFLAG_PAM_USER_SESSION_KEY;
1966
1967                         if (!NT_STATUS_IS_OK(
1968                                     contact_winbind_auth_crap(username,
1969                                                               domain,
1970                                                               global_myname(),
1971                                                               &challenge,
1972                                                               &lm_response,
1973                                                               &nt_response,
1974                                                               flags,
1975                                                               lm_key,
1976                                                               user_session_key,
1977                                                               &error_string,
1978                                                               NULL))) {
1979
1980                                 x_fprintf(x_stdout, "Authenticated: No\n");
1981                                 x_fprintf(x_stdout, "Authentication-Error: %s\n.\n", error_string);
1982                         } else {
1983                                 static char zeros[16];
1984                                 char *hex_lm_key;
1985                                 char *hex_user_session_key;
1986
1987                                 x_fprintf(x_stdout, "Authenticated: Yes\n");
1988
1989                                 if (ntlm_server_1_lm_session_key
1990                                     && (memcmp(zeros, lm_key,
1991                                                sizeof(lm_key)) != 0)) {
1992                                         hex_lm_key = hex_encode_talloc(NULL,
1993                                                                 (const unsigned char *)lm_key,
1994                                                                 sizeof(lm_key));
1995                                         x_fprintf(x_stdout, "LANMAN-Session-Key: %s\n", hex_lm_key);
1996                                         TALLOC_FREE(hex_lm_key);
1997                                 }
1998
1999                                 if (ntlm_server_1_user_session_key
2000                                     && (memcmp(zeros, user_session_key,
2001                                                sizeof(user_session_key)) != 0)) {
2002                                         hex_user_session_key = hex_encode_talloc(NULL,
2003                                                                           (const unsigned char *)user_session_key,
2004                                                                           sizeof(user_session_key));
2005                                         x_fprintf(x_stdout, "User-Session-Key: %s\n", hex_user_session_key);
2006                                         TALLOC_FREE(hex_user_session_key);
2007                                 }
2008                         }
2009                         SAFE_FREE(error_string);
2010                 }
2011                 /* clear out the state */
2012                 challenge = data_blob_null;
2013                 nt_response = data_blob_null;
2014                 lm_response = data_blob_null;
2015                 SAFE_FREE(full_username);
2016                 SAFE_FREE(username);
2017                 SAFE_FREE(domain);
2018                 SAFE_FREE(plaintext_password);
2019                 ntlm_server_1_user_session_key = False;
2020                 ntlm_server_1_lm_session_key = False;
2021                 x_fprintf(x_stdout, ".\n");
2022
2023                 return;
2024         }
2025
2026         request = buf;
2027
2028         /* Indicates a base64 encoded structure */
2029         parameter = strstr_m(request, ":: ");
2030         if (!parameter) {
2031                 parameter = strstr_m(request, ": ");
2032
2033                 if (!parameter) {
2034                         DEBUG(0, ("Parameter not found!\n"));
2035                         x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
2036                         return;
2037                 }
2038
2039                 parameter[0] ='\0';
2040                 parameter++;
2041                 parameter[0] ='\0';
2042                 parameter++;
2043
2044         } else {
2045                 parameter[0] ='\0';
2046                 parameter++;
2047                 parameter[0] ='\0';
2048                 parameter++;
2049                 parameter[0] ='\0';
2050                 parameter++;
2051
2052                 base64_decode_inplace(parameter);
2053         }
2054
2055         if (strequal(request, "LANMAN-Challenge")) {
2056                 challenge = strhex_to_data_blob(NULL, parameter);
2057                 if (challenge.length != 8) {
2058                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 8)\n.\n",
2059                                   parameter,
2060                                   (int)challenge.length);
2061                         challenge = data_blob_null;
2062                 }
2063         } else if (strequal(request, "NT-Response")) {
2064                 nt_response = strhex_to_data_blob(NULL, parameter);
2065                 if (nt_response.length < 24) {
2066                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (only got %d bytes, needed at least 24)\n.\n",
2067                                   parameter,
2068                                   (int)nt_response.length);
2069                         nt_response = data_blob_null;
2070                 }
2071         } else if (strequal(request, "LANMAN-Response")) {
2072                 lm_response = strhex_to_data_blob(NULL, parameter);
2073                 if (lm_response.length != 24) {
2074                         x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 24)\n.\n",
2075                                   parameter,
2076                                   (int)lm_response.length);
2077                         lm_response = data_blob_null;
2078                 }
2079         } else if (strequal(request, "Password")) {
2080                 plaintext_password = smb_xstrdup(parameter);
2081         } else if (strequal(request, "NT-Domain")) {
2082                 domain = smb_xstrdup(parameter);
2083         } else if (strequal(request, "Username")) {
2084                 username = smb_xstrdup(parameter);
2085         } else if (strequal(request, "Full-Username")) {
2086                 full_username = smb_xstrdup(parameter);
2087         } else if (strequal(request, "Request-User-Session-Key")) {
2088                 ntlm_server_1_user_session_key = strequal(parameter, "Yes");
2089         } else if (strequal(request, "Request-LanMan-Session-Key")) {
2090                 ntlm_server_1_lm_session_key = strequal(parameter, "Yes");
2091         } else {
2092                 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
2093         }
2094 }
2095
2096 static void manage_ntlm_change_password_1_request(struct ntlm_auth_state *state,
2097                                                         char *buf, int length)
2098 {
2099         char *request, *parameter;
2100         static DATA_BLOB new_nt_pswd;
2101         static DATA_BLOB old_nt_hash_enc;
2102         static DATA_BLOB new_lm_pswd;
2103         static DATA_BLOB old_lm_hash_enc;
2104         static char *full_username = NULL;
2105         static char *username = NULL;
2106         static char *domain = NULL;
2107         static char *newpswd =  NULL;
2108         static char *oldpswd = NULL;
2109
2110         if (strequal(buf, ".")) {
2111                 if(newpswd && oldpswd) {
2112                         uchar old_nt_hash[16];
2113                         uchar old_lm_hash[16];
2114                         uchar new_nt_hash[16];
2115                         uchar new_lm_hash[16];
2116
2117                         new_nt_pswd = data_blob(NULL, 516);
2118                         old_nt_hash_enc = data_blob(NULL, 16);
2119
2120                         /* Calculate the MD4 hash (NT compatible) of the
2121                          * password */
2122                         E_md4hash(oldpswd, old_nt_hash);
2123                         E_md4hash(newpswd, new_nt_hash);
2124
2125                         /* E_deshash returns false for 'long'
2126                            passwords (> 14 DOS chars).
2127
2128                            Therefore, don't send a buffer
2129                            encrypted with the truncated hash
2130                            (it could allow an even easier
2131                            attack on the password)
2132
2133                            Likewise, obey the admin's restriction
2134                         */
2135
2136                         if (lp_client_lanman_auth() &&
2137                             E_deshash(newpswd, new_lm_hash) &&
2138                             E_deshash(oldpswd, old_lm_hash)) {
2139                                 new_lm_pswd = data_blob(NULL, 516);
2140                                 old_lm_hash_enc = data_blob(NULL, 16);
2141                                 encode_pw_buffer(new_lm_pswd.data, newpswd,
2142                                                  STR_UNICODE);
2143
2144                                 arcfour_crypt(new_lm_pswd.data, old_nt_hash, 516);
2145                                 E_old_pw_hash(new_nt_hash, old_lm_hash,
2146                                               old_lm_hash_enc.data);
2147                         } else {
2148                                 new_lm_pswd.data = NULL;
2149                                 new_lm_pswd.length = 0;
2150                                 old_lm_hash_enc.data = NULL;
2151                                 old_lm_hash_enc.length = 0;
2152                         }
2153
2154                         encode_pw_buffer(new_nt_pswd.data, newpswd,
2155                                          STR_UNICODE);
2156
2157                         arcfour_crypt(new_nt_pswd.data, old_nt_hash, 516);
2158                         E_old_pw_hash(new_nt_hash, old_nt_hash,
2159                                       old_nt_hash_enc.data);
2160                 }
2161
2162                 if (!full_username && !username) {
2163                         x_fprintf(x_stdout, "Error: No username supplied!\n");
2164                 } else if ((!new_nt_pswd.data || !old_nt_hash_enc.data) &&
2165                            (!new_lm_pswd.data || old_lm_hash_enc.data) ) {
2166                         x_fprintf(x_stdout, "Error: No NT or LM password "
2167                                   "blobs supplied!\n");
2168                 } else {
2169                         char *error_string = NULL;
2170
2171                         if (full_username && !username) {
2172                                 fstring fstr_user;
2173                                 fstring fstr_domain;
2174
2175                                 if (!parse_ntlm_auth_domain_user(full_username,
2176                                                                  fstr_user,
2177                                                                  fstr_domain)) {
2178                                         /* username might be 'tainted', don't
2179                                          * print into our new-line
2180                                          * deleimianted stream */
2181                                         x_fprintf(x_stdout, "Error: Could not "
2182                                                   "parse into domain and "
2183                                                   "username\n");
2184                                         SAFE_FREE(username);
2185                                         username = smb_xstrdup(full_username);
2186                                 } else {
2187                                         SAFE_FREE(username);
2188                                         SAFE_FREE(domain);
2189                                         username = smb_xstrdup(fstr_user);
2190                                         domain = smb_xstrdup(fstr_domain);
2191                                 }
2192
2193                         }
2194
2195                         if(!NT_STATUS_IS_OK(contact_winbind_change_pswd_auth_crap(
2196                                                     username, domain,
2197                                                     new_nt_pswd,
2198                                                     old_nt_hash_enc,
2199                                                     new_lm_pswd,
2200                                                     old_lm_hash_enc,
2201                                                     &error_string))) {
2202                                 x_fprintf(x_stdout, "Password-Change: No\n");
2203                                 x_fprintf(x_stdout, "Password-Change-Error: "
2204                                           "%s\n.\n", error_string);
2205                         } else {
2206                                 x_fprintf(x_stdout, "Password-Change: Yes\n");
2207                         }
2208
2209                         SAFE_FREE(error_string);
2210                 }
2211                 /* clear out the state */
2212                 new_nt_pswd = data_blob_null;
2213                 old_nt_hash_enc = data_blob_null;
2214                 new_lm_pswd = data_blob_null;
2215                 old_nt_hash_enc = data_blob_null;
2216                 SAFE_FREE(full_username);
2217                 SAFE_FREE(username);
2218                 SAFE_FREE(domain);
2219                 SAFE_FREE(newpswd);
2220                 SAFE_FREE(oldpswd);
2221                 x_fprintf(x_stdout, ".\n");
2222
2223                 return;
2224         }
2225
2226         request = buf;
2227
2228         /* Indicates a base64 encoded structure */
2229         parameter = strstr_m(request, ":: ");
2230         if (!parameter) {
2231                 parameter = strstr_m(request, ": ");
2232
2233                 if (!parameter) {
2234                         DEBUG(0, ("Parameter not found!\n"));
2235                         x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
2236                         return;
2237                 }
2238
2239                 parameter[0] ='\0';
2240                 parameter++;
2241                 parameter[0] ='\0';
2242                 parameter++;
2243         } else {
2244                 parameter[0] ='\0';
2245                 parameter++;
2246                 parameter[0] ='\0';
2247                 parameter++;
2248                 parameter[0] ='\0';
2249                 parameter++;
2250
2251                 base64_decode_inplace(parameter);
2252         }
2253
2254         if (strequal(request, "new-nt-password-blob")) {
2255                 new_nt_pswd = strhex_to_data_blob(NULL, parameter);
2256                 if (new_nt_pswd.length != 516) {
2257                         x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2258                                   "(got %d bytes, expected 516)\n.\n",
2259                                   parameter,
2260                                   (int)new_nt_pswd.length);
2261                         new_nt_pswd = data_blob_null;
2262                 }
2263         } else if (strequal(request, "old-nt-hash-blob")) {
2264                 old_nt_hash_enc = strhex_to_data_blob(NULL, parameter);
2265                 if (old_nt_hash_enc.length != 16) {
2266                         x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2267                                   "(got %d bytes, expected 16)\n.\n",
2268                                   parameter,
2269                                   (int)old_nt_hash_enc.length);
2270                         old_nt_hash_enc = data_blob_null;
2271                 }
2272         } else if (strequal(request, "new-lm-password-blob")) {
2273                 new_lm_pswd = strhex_to_data_blob(NULL, parameter);
2274                 if (new_lm_pswd.length != 516) {
2275                         x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2276                                   "(got %d bytes, expected 516)\n.\n",
2277                                   parameter,
2278                                   (int)new_lm_pswd.length);
2279                         new_lm_pswd = data_blob_null;
2280                 }
2281         }
2282         else if (strequal(request, "old-lm-hash-blob")) {
2283                 old_lm_hash_enc = strhex_to_data_blob(NULL, parameter);
2284                 if (old_lm_hash_enc.length != 16)
2285                 {
2286                         x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2287                                   "(got %d bytes, expected 16)\n.\n",
2288                                   parameter,
2289                                   (int)old_lm_hash_enc.length);
2290                         old_lm_hash_enc = data_blob_null;
2291                 }
2292         } else if (strequal(request, "nt-domain")) {
2293                 domain = smb_xstrdup(parameter);
2294         } else if(strequal(request, "username")) {
2295                 username = smb_xstrdup(parameter);
2296         } else if(strequal(request, "full-username")) {
2297                 username = smb_xstrdup(parameter);
2298         } else if(strequal(request, "new-password")) {
2299                 newpswd = smb_xstrdup(parameter);
2300         } else if (strequal(request, "old-password")) {
2301                 oldpswd = smb_xstrdup(parameter);
2302         } else {
2303                 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
2304         }
2305 }
2306
2307 static void manage_squid_request(struct ntlm_auth_state *state,
2308                 stdio_helper_function fn)
2309 {
2310         char *buf;
2311         char tmp[INITIAL_BUFFER_SIZE+1];
2312         int length, buf_size = 0;
2313         char *c;
2314
2315         buf = talloc_strdup(state->mem_ctx, "");
2316         if (!buf) {
2317                 DEBUG(0, ("Failed to allocate input buffer.\n"));
2318                 x_fprintf(x_stderr, "ERR\n");
2319                 exit(1);
2320         }
2321
2322         do {
2323
2324                 /* this is not a typo - x_fgets doesn't work too well under
2325                  * squid */
2326                 if (fgets(tmp, sizeof(tmp)-1, stdin) == NULL) {
2327                         if (ferror(stdin)) {
2328                                 DEBUG(1, ("fgets() failed! dying..... errno=%d "
2329                                           "(%s)\n", ferror(stdin),
2330                                           strerror(ferror(stdin))));
2331
2332                                 exit(1);
2333                         }
2334                         exit(0);
2335                 }
2336
2337                 buf = talloc_strdup_append_buffer(buf, tmp);
2338                 buf_size += INITIAL_BUFFER_SIZE;
2339
2340                 if (buf_size > MAX_BUFFER_SIZE) {
2341                         DEBUG(2, ("Oversized message\n"));
2342                         x_fprintf(x_stderr, "ERR\n");
2343                         talloc_free(buf);
2344                         return;
2345                 }
2346
2347                 c = strchr(buf, '\n');
2348         } while (c == NULL);
2349
2350         *c = '\0';
2351         length = c-buf;
2352
2353         DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
2354
2355         if (buf[0] == '\0') {
2356                 DEBUG(2, ("Invalid Request\n"));
2357                 x_fprintf(x_stderr, "ERR\n");
2358                 talloc_free(buf);
2359                 return;
2360         }
2361
2362         fn(state, buf, length);
2363         talloc_free(buf);
2364 }
2365
2366
2367 static void squid_stream(enum stdio_helper_mode stdio_mode, stdio_helper_function fn) {
2368         TALLOC_CTX *mem_ctx;
2369         struct ntlm_auth_state *state;
2370
2371         /* initialize FDescs */
2372         x_setbuf(x_stdout, NULL);
2373         x_setbuf(x_stderr, NULL);
2374
2375         mem_ctx = talloc_init("ntlm_auth");
2376         if (!mem_ctx) {
2377                 DEBUG(0, ("squid_stream: Failed to create talloc context\n"));
2378                 x_fprintf(x_stderr, "ERR\n");
2379                 exit(1);
2380         }
2381
2382         state = talloc_zero(mem_ctx, struct ntlm_auth_state);
2383         if (!state) {
2384                 DEBUG(0, ("squid_stream: Failed to talloc ntlm_auth_state\n"));
2385                 x_fprintf(x_stderr, "ERR\n");
2386                 exit(1);
2387         }
2388
2389         state->mem_ctx = mem_ctx;
2390         state->helper_mode = stdio_mode;
2391
2392         while(1) {
2393                 TALLOC_CTX *frame = talloc_stackframe();
2394                 manage_squid_request(state, fn);
2395                 TALLOC_FREE(frame);
2396         }
2397 }
2398
2399
2400 /* Authenticate a user with a challenge/response */
2401
2402 static bool check_auth_crap(void)
2403 {
2404         NTSTATUS nt_status;
2405         uint32 flags = 0;
2406         char lm_key[8];
2407         char user_session_key[16];
2408         char *hex_lm_key;
2409         char *hex_user_session_key;
2410         char *error_string;
2411         static uint8 zeros[16];
2412
2413         x_setbuf(x_stdout, NULL);
2414
2415         if (request_lm_key)
2416                 flags |= WBFLAG_PAM_LMKEY;
2417
2418         if (request_user_session_key)
2419                 flags |= WBFLAG_PAM_USER_SESSION_KEY;
2420
2421         flags |= WBFLAG_PAM_NT_STATUS_SQUASH;
2422
2423         nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
2424                                               opt_workstation,
2425                                               &opt_challenge,
2426                                               &opt_lm_response,
2427                                               &opt_nt_response,
2428                                               flags,
2429                                               (unsigned char *)lm_key,
2430                                               (unsigned char *)user_session_key,
2431                                               &error_string, NULL);
2432
2433         if (!NT_STATUS_IS_OK(nt_status)) {
2434                 x_fprintf(x_stdout, "%s (0x%x)\n",
2435                           error_string,
2436                           NT_STATUS_V(nt_status));
2437                 SAFE_FREE(error_string);
2438                 return False;
2439         }
2440
2441         if (request_lm_key
2442             && (memcmp(zeros, lm_key,
2443                        sizeof(lm_key)) != 0)) {
2444                 hex_lm_key = hex_encode_talloc(talloc_tos(), (const unsigned char *)lm_key,
2445                                         sizeof(lm_key));
2446                 x_fprintf(x_stdout, "LM_KEY: %s\n", hex_lm_key);
2447                 TALLOC_FREE(hex_lm_key);
2448         }
2449         if (request_user_session_key
2450             && (memcmp(zeros, user_session_key,
2451                        sizeof(user_session_key)) != 0)) {
2452                 hex_user_session_key = hex_encode_talloc(talloc_tos(), (const unsigned char *)user_session_key,
2453                                                   sizeof(user_session_key));
2454                 x_fprintf(x_stdout, "NT_KEY: %s\n", hex_user_session_key);
2455                 TALLOC_FREE(hex_user_session_key);
2456         }
2457
2458         return True;
2459 }
2460
2461 /* Main program */
2462
2463 enum {
2464         OPT_USERNAME = 1000,
2465         OPT_DOMAIN,
2466         OPT_WORKSTATION,
2467         OPT_CHALLENGE,
2468         OPT_RESPONSE,
2469         OPT_LM,
2470         OPT_NT,
2471         OPT_PASSWORD,
2472         OPT_LM_KEY,
2473         OPT_USER_SESSION_KEY,
2474         OPT_DIAGNOSTICS,
2475         OPT_REQUIRE_MEMBERSHIP,
2476         OPT_USE_CACHED_CREDS,
2477         OPT_PAM_WINBIND_CONF
2478 };
2479
2480  int main(int argc, const char **argv)
2481 {
2482         TALLOC_CTX *frame = talloc_stackframe();
2483         int opt;
2484         static const char *helper_protocol;
2485         static int diagnostics;
2486
2487         static const char *hex_challenge;
2488         static const char *hex_lm_response;
2489         static const char *hex_nt_response;
2490
2491         poptContext pc;
2492
2493         /* NOTE: DO NOT change this interface without considering the implications!
2494            This is an external interface, which other programs will use to interact
2495            with this helper.
2496         */
2497
2498         /* We do not use single-letter command abbreviations, because they harm future
2499            interface stability. */
2500
2501         struct poptOption long_options[] = {
2502                 POPT_AUTOHELP
2503                 { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
2504                 { "username", 0, POPT_ARG_STRING, &opt_username, OPT_USERNAME, "username"},
2505                 { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
2506                 { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
2507                 { "challenge", 0, POPT_ARG_STRING, &hex_challenge, OPT_CHALLENGE, "challenge (HEX encoded)"},
2508                 { "lm-response", 0, POPT_ARG_STRING, &hex_lm_response, OPT_LM, "LM Response to the challenge (HEX encoded)"},
2509                 { "nt-response", 0, POPT_ARG_STRING, &hex_nt_response, OPT_NT, "NT or NTLMv2 Response to the challenge (HEX encoded)"},
2510                 { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
2511                 { "request-lm-key", 0, POPT_ARG_NONE, &request_lm_key, OPT_LM_KEY, "Retrieve LM session key"},
2512                 { "request-nt-key", 0, POPT_ARG_NONE, &request_user_session_key, OPT_USER_SESSION_KEY, "Retrieve User (NT) session key"},
2513                 { "use-cached-creds", 0, POPT_ARG_NONE, &use_cached_creds, OPT_USE_CACHED_CREDS, "Use cached credentials if no password is given"},
2514                 { "diagnostics", 0, POPT_ARG_NONE, &diagnostics, OPT_DIAGNOSTICS, "Perform diagnostics on the authentictaion chain"},
2515                 { "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" },
2516                 { "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" },
2517                 POPT_COMMON_CONFIGFILE
2518                 POPT_COMMON_VERSION
2519                 POPT_TABLEEND
2520         };
2521
2522         /* Samba client initialisation */
2523         load_case_tables();
2524
2525         dbf = x_stderr;
2526
2527         /* Parse options */
2528
2529         pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
2530
2531         /* Parse command line options */
2532
2533         if (argc == 1) {
2534                 poptPrintHelp(pc, stderr, 0);
2535                 return 1;
2536         }
2537
2538         while((opt = poptGetNextOpt(pc)) != -1) {
2539                 /* Get generic config options like --configfile */
2540         }
2541
2542         poptFreeContext(pc);
2543
2544         if (!lp_load(get_dyn_CONFIGFILE(), True, False, False, True)) {
2545                 d_fprintf(stderr, "ntlm_auth: error opening config file %s. Error was %s\n",
2546                         get_dyn_CONFIGFILE(), strerror(errno));
2547                 exit(1);
2548         }
2549
2550         pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
2551                             POPT_CONTEXT_KEEP_FIRST);
2552
2553         while((opt = poptGetNextOpt(pc)) != -1) {
2554                 switch (opt) {
2555                 case OPT_CHALLENGE:
2556                         opt_challenge = strhex_to_data_blob(NULL, hex_challenge);
2557                         if (opt_challenge.length != 8) {
2558                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2559                                           hex_challenge,
2560                                           (int)opt_challenge.length);
2561                                 exit(1);
2562                         }
2563                         break;
2564                 case OPT_LM:
2565                         opt_lm_response = strhex_to_data_blob(NULL, hex_lm_response);
2566                         if (opt_lm_response.length != 24) {
2567                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2568                                           hex_lm_response,
2569                                           (int)opt_lm_response.length);
2570                                 exit(1);
2571                         }
2572                         break;
2573
2574                 case OPT_NT:
2575                         opt_nt_response = strhex_to_data_blob(NULL, hex_nt_response);
2576                         if (opt_nt_response.length < 24) {
2577                                 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2578                                           hex_nt_response,
2579                                           (int)opt_nt_response.length);
2580                                 exit(1);
2581                         }
2582                         break;
2583
2584                 case OPT_REQUIRE_MEMBERSHIP:
2585                         if (StrnCaseCmp("S-", require_membership_of, 2) == 0) {
2586                                 require_membership_of_sid = require_membership_of;
2587                         }
2588                         break;
2589                 }
2590         }
2591
2592         if (opt_username) {
2593                 char *domain = SMB_STRDUP(opt_username);
2594                 char *p = strchr_m(domain, *lp_winbind_separator());
2595                 if (p) {
2596                         opt_username = p+1;
2597                         *p = '\0';
2598                         if (opt_domain && !strequal(opt_domain, domain)) {
2599                                 x_fprintf(x_stderr, "Domain specified in username (%s) "
2600                                         "doesn't match specified domain (%s)!\n\n",
2601                                         domain, opt_domain);
2602                                 poptPrintHelp(pc, stderr, 0);
2603                                 exit(1);
2604                         }
2605                         opt_domain = domain;
2606                 } else {
2607                         SAFE_FREE(domain);
2608                 }
2609         }
2610
2611         /* Note: if opt_domain is "" then send no domain */
2612         if (opt_domain == NULL) {
2613                 opt_domain = get_winbind_domain();
2614         }
2615
2616         if (opt_workstation == NULL) {
2617                 opt_workstation = "";
2618         }
2619
2620         if (helper_protocol) {
2621                 int i;
2622                 for (i=0; i<NUM_HELPER_MODES; i++) {
2623                         if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
2624                                 squid_stream(stdio_helper_protocols[i].mode, stdio_helper_protocols[i].fn);
2625                                 exit(0);
2626                         }
2627                 }
2628                 x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol);
2629
2630                 for (i=0; i<NUM_HELPER_MODES; i++) {
2631                         x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name);
2632                 }
2633
2634                 exit(1);
2635         }
2636
2637         if (!opt_username || !*opt_username) {
2638                 x_fprintf(x_stderr, "username must be specified!\n\n");
2639                 poptPrintHelp(pc, stderr, 0);
2640                 exit(1);
2641         }
2642
2643         if (opt_challenge.length) {
2644                 if (!check_auth_crap()) {
2645                         exit(1);
2646                 }
2647                 exit(0);
2648         }
2649
2650         if (!opt_password) {
2651                 opt_password = getpass("password: ");
2652         }
2653
2654         if (diagnostics) {
2655                 if (!diagnose_ntlm_auth()) {
2656                         return 1;
2657                 }
2658         } else {
2659                 fstring user;
2660
2661                 fstr_sprintf(user, "%s%c%s", opt_domain, winbind_separator(), opt_username);
2662                 if (!check_plaintext_auth(user, opt_password, True)) {
2663                         return 1;
2664                 }
2665         }
2666
2667         /* Exit code */
2668
2669         poptFreeContext(pc);
2670         TALLOC_FREE(frame);
2671         return 0;
2672 }