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s3: Remove some unnecessary if-statements
[Samba.git] / source3 / utils / ntlm_auth.c
blob241dc56e601d657faba8c353a5b1b069127e18fc
1 /*
2 Unix SMB/CIFS implementation.
3
4 Winbind status program.
5
6 Copyright (C) Tim Potter 2000-2003
7 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003-2004
8 Copyright (C) Francesco Chemolli <kinkie@kame.usr.dsi.unimi.it> 2000
9 Copyright (C) Robert O'Callahan 2006 (added cached credential code).
10 Copyright (C) Kai Blin <kai@samba.org> 2008
11
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 3 of the License, or
15 (at your option) any later version.
16
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 */
25
26 #include "includes.h"
27 #include "popt_common.h"
28 #include "utils/ntlm_auth.h"
29 #include "../libcli/auth/libcli_auth.h"
30 #include "../libcli/auth/spnego.h"
31 #include "../libcli/auth/ntlmssp.h"
32 #include "smb_krb5.h"
33 #include <iniparser.h>
34 #include "../lib/crypto/arcfour.h"
35 #include "libads/kerberos_proto.h"
36 #include "nsswitch/winbind_client.h"
37
38 #ifndef PAM_WINBIND_CONFIG_FILE
39 #define PAM_WINBIND_CONFIG_FILE "/etc/security/pam_winbind.conf"
40 #endif
41
42 #define WINBIND_KRB5_AUTH 0x00000080
43
44 #undef DBGC_CLASS
45 #define DBGC_CLASS DBGC_WINBIND
46
47 #define INITIAL_BUFFER_SIZE 300
48 #define MAX_BUFFER_SIZE 630000
49
50 enum stdio_helper_mode {
51 SQUID_2_4_BASIC,
52 SQUID_2_5_BASIC,
53 SQUID_2_5_NTLMSSP,
54 NTLMSSP_CLIENT_1,
55 GSS_SPNEGO,
56 GSS_SPNEGO_CLIENT,
57 NTLM_SERVER_1,
58 NTLM_CHANGE_PASSWORD_1,
59 NUM_HELPER_MODES
60 };
61
62 enum ntlm_auth_cli_state {
63 CLIENT_INITIAL = 0,
64 CLIENT_RESPONSE,
65 CLIENT_FINISHED,
66 CLIENT_ERROR
67 };
68
69 enum ntlm_auth_svr_state {
70 SERVER_INITIAL = 0,
71 SERVER_CHALLENGE,
72 SERVER_FINISHED,
73 SERVER_ERROR
74 };
75
76 struct ntlm_auth_state {
77 TALLOC_CTX *mem_ctx;
78 enum stdio_helper_mode helper_mode;
79 enum ntlm_auth_cli_state cli_state;
80 enum ntlm_auth_svr_state svr_state;
81 struct ntlmssp_state *ntlmssp_state;
82 uint32_t neg_flags;
83 char *want_feature_list;
84 bool have_session_key;
85 DATA_BLOB session_key;
86 DATA_BLOB initial_message;
87 };
88
89 typedef void (*stdio_helper_function)(struct ntlm_auth_state *state, char *buf,
90 int length);
91
92 static void manage_squid_basic_request (struct ntlm_auth_state *state,
93 char *buf, int length);
94
95 static void manage_squid_ntlmssp_request (struct ntlm_auth_state *state,
96 char *buf, int length);
97
98 static void manage_client_ntlmssp_request (struct ntlm_auth_state *state,
99 char *buf, int length);
100
101 static void manage_gss_spnego_request (struct ntlm_auth_state *state,
102 char *buf, int length);
103
104 static void manage_gss_spnego_client_request (struct ntlm_auth_state *state,
105 char *buf, int length);
106
107 static void manage_ntlm_server_1_request (struct ntlm_auth_state *state,
108 char *buf, int length);
109
110 static void manage_ntlm_change_password_1_request(struct ntlm_auth_state *state,
111 char *buf, int length);
112
113 static const struct {
114 enum stdio_helper_mode mode;
115 const char *name;
116 stdio_helper_function fn;
117 } stdio_helper_protocols[] = {
118 { SQUID_2_4_BASIC, "squid-2.4-basic", manage_squid_basic_request},
119 { SQUID_2_5_BASIC, "squid-2.5-basic", manage_squid_basic_request},
120 { SQUID_2_5_NTLMSSP, "squid-2.5-ntlmssp", manage_squid_ntlmssp_request},
121 { NTLMSSP_CLIENT_1, "ntlmssp-client-1", manage_client_ntlmssp_request},
122 { GSS_SPNEGO, "gss-spnego", manage_gss_spnego_request},
123 { GSS_SPNEGO_CLIENT, "gss-spnego-client", manage_gss_spnego_client_request},
124 { NTLM_SERVER_1, "ntlm-server-1", manage_ntlm_server_1_request},
125 { NTLM_CHANGE_PASSWORD_1, "ntlm-change-password-1", manage_ntlm_change_password_1_request},
126 { NUM_HELPER_MODES, NULL, NULL}
127 };
128
129 const char *opt_username;
130 const char *opt_domain;
131 const char *opt_workstation;
132 const char *opt_password;
133 static DATA_BLOB opt_challenge;
134 static DATA_BLOB opt_lm_response;
135 static DATA_BLOB opt_nt_response;
136 static int request_lm_key;
137 static int request_user_session_key;
138 static int use_cached_creds;
139
140 static const char *require_membership_of;
141 static const char *require_membership_of_sid;
142 static const char *opt_pam_winbind_conf;
143
144 static char winbind_separator(void)
145 {
146 struct winbindd_response response;
147 static bool got_sep;
148 static char sep;
149
150 if (got_sep)
151 return sep;
152
153 ZERO_STRUCT(response);
154
155 /* Send off request */
156
157 if (winbindd_request_response(WINBINDD_INFO, NULL, &response) !=
158 NSS_STATUS_SUCCESS) {
159 d_printf("could not obtain winbind separator!\n");
160 return *lp_winbind_separator();
161 }
162
163 sep = response.data.info.winbind_separator;
164 got_sep = True;
165
166 if (!sep) {
167 d_printf("winbind separator was NULL!\n");
168 return *lp_winbind_separator();
169 }
170
171 return sep;
172 }
173
174 const char *get_winbind_domain(void)
175 {
176 struct winbindd_response response;
177
178 static fstring winbind_domain;
179 if (*winbind_domain) {
180 return winbind_domain;
181 }
182
183 ZERO_STRUCT(response);
184
185 /* Send off request */
186
187 if (winbindd_request_response(WINBINDD_DOMAIN_NAME, NULL, &response) !=
188 NSS_STATUS_SUCCESS) {
189 DEBUG(0, ("could not obtain winbind domain name!\n"));
190 return lp_workgroup();
191 }
192
193 fstrcpy(winbind_domain, response.data.domain_name);
194
195 return winbind_domain;
196
197 }
198
199 const char *get_winbind_netbios_name(void)
200 {
201 struct winbindd_response response;
202
203 static fstring winbind_netbios_name;
204
205 if (*winbind_netbios_name) {
206 return winbind_netbios_name;
207 }
208
209 ZERO_STRUCT(response);
210
211 /* Send off request */
212
213 if (winbindd_request_response(WINBINDD_NETBIOS_NAME, NULL, &response) !=
214 NSS_STATUS_SUCCESS) {
215 DEBUG(0, ("could not obtain winbind netbios name!\n"));
216 return global_myname();
217 }
218
219 fstrcpy(winbind_netbios_name, response.data.netbios_name);
220
221 return winbind_netbios_name;
222
223 }
224
225 DATA_BLOB get_challenge(void)
226 {
227 static DATA_BLOB chal;
228 if (opt_challenge.length)
229 return opt_challenge;
230
231 chal = data_blob(NULL, 8);
232
233 generate_random_buffer(chal.data, chal.length);
234 return chal;
235 }
236
237 /* Copy of parse_domain_user from winbindd_util.c. Parse a string of the
238 form DOMAIN/user into a domain and a user */
239
240 static bool parse_ntlm_auth_domain_user(const char *domuser, fstring domain,
241 fstring user)
242 {
243
244 char *p = strchr(domuser,winbind_separator());
245
246 if (!p) {
247 return False;
248 }
249
250 fstrcpy(user, p+1);
251 fstrcpy(domain, domuser);
252 domain[PTR_DIFF(p, domuser)] = 0;
253 strupper_m(domain);
254
255 return True;
256 }
257
258 static bool get_require_membership_sid(void) {
259 struct winbindd_request request;
260 struct winbindd_response response;
261
262 if (!require_membership_of) {
263 return True;
264 }
265
266 if (require_membership_of_sid) {
267 return True;
268 }
269
270 /* Otherwise, ask winbindd for the name->sid request */
271
272 ZERO_STRUCT(request);
273 ZERO_STRUCT(response);
274
275 if (!parse_ntlm_auth_domain_user(require_membership_of,
276 request.data.name.dom_name,
277 request.data.name.name)) {
278 DEBUG(0, ("Could not parse %s into seperate domain/name parts!\n",
279 require_membership_of));
280 return False;
281 }
282
283 if (winbindd_request_response(WINBINDD_LOOKUPNAME, &request, &response) !=
284 NSS_STATUS_SUCCESS) {
285 DEBUG(0, ("Winbindd lookupname failed to resolve %s into a SID!\n",
286 require_membership_of));
287 return False;
288 }
289
290 require_membership_of_sid = SMB_STRDUP(response.data.sid.sid);
291
292 if (require_membership_of_sid)
293 return True;
294
295 return False;
296 }
297
298 /*
299 * Get some configuration from pam_winbind.conf to see if we
300 * need to contact trusted domain
301 */
302
303 int get_pam_winbind_config()
304 {
305 int ctrl = 0;
306 dictionary *d = NULL;
307
308 if (!opt_pam_winbind_conf || !*opt_pam_winbind_conf) {
309 opt_pam_winbind_conf = PAM_WINBIND_CONFIG_FILE;
310 }
311
312 d = iniparser_load(CONST_DISCARD(char *, opt_pam_winbind_conf));
313
314 if (!d) {
315 return 0;
316 }
317
318 if (iniparser_getboolean(d, CONST_DISCARD(char *, "global:krb5_auth"), false)) {
319 ctrl |= WINBIND_KRB5_AUTH;
320 }
321
322 iniparser_freedict(d);
323
324 return ctrl;
325 }
326
327 /* Authenticate a user with a plaintext password */
328
329 static bool check_plaintext_auth(const char *user, const char *pass,
330 bool stdout_diagnostics)
331 {
332 struct winbindd_request request;
333 struct winbindd_response response;
334 NSS_STATUS result;
335
336 if (!get_require_membership_sid()) {
337 return False;
338 }
339
340 /* Send off request */
341
342 ZERO_STRUCT(request);
343 ZERO_STRUCT(response);
344
345 fstrcpy(request.data.auth.user, user);
346 fstrcpy(request.data.auth.pass, pass);
347 if (require_membership_of_sid) {
348 strlcpy(request.data.auth.require_membership_of_sid,
349 require_membership_of_sid,
350 sizeof(request.data.auth.require_membership_of_sid));
351 }
352
353 result = winbindd_request_response(WINBINDD_PAM_AUTH, &request, &response);
354
355 /* Display response */
356
357 if (stdout_diagnostics) {
358 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
359 d_printf("Reading winbind reply failed! (0x01)\n");
360 }
361
362 d_printf("%s: %s (0x%x)\n",
363 response.data.auth.nt_status_string,
364 response.data.auth.error_string,
365 response.data.auth.nt_status);
366 } else {
367 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
368 DEBUG(1, ("Reading winbind reply failed! (0x01)\n"));
369 }
370
371 DEBUG(3, ("%s: %s (0x%x)\n",
372 response.data.auth.nt_status_string,
373 response.data.auth.error_string,
374 response.data.auth.nt_status));
375 }
376
377 return (result == NSS_STATUS_SUCCESS);
378 }
379
380 /* authenticate a user with an encrypted username/password */
381
382 NTSTATUS contact_winbind_auth_crap(const char *username,
383 const char *domain,
384 const char *workstation,
385 const DATA_BLOB *challenge,
386 const DATA_BLOB *lm_response,
387 const DATA_BLOB *nt_response,
388 uint32 flags,
389 uint8 lm_key[8],
390 uint8 user_session_key[16],
391 char **error_string,
392 char **unix_name)
393 {
394 NTSTATUS nt_status;
395 NSS_STATUS result;
396 struct winbindd_request request;
397 struct winbindd_response response;
398
399 if (!get_require_membership_sid()) {
400 return NT_STATUS_INVALID_PARAMETER;
401 }
402
403 ZERO_STRUCT(request);
404 ZERO_STRUCT(response);
405
406 request.flags = flags;
407
408 request.data.auth_crap.logon_parameters = MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT | MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT;
409
410 if (require_membership_of_sid)
411 fstrcpy(request.data.auth_crap.require_membership_of_sid, require_membership_of_sid);
412
413 fstrcpy(request.data.auth_crap.user, username);
414 fstrcpy(request.data.auth_crap.domain, domain);
415
416 fstrcpy(request.data.auth_crap.workstation,
417 workstation);
418
419 memcpy(request.data.auth_crap.chal, challenge->data, MIN(challenge->length, 8));
420
421 if (lm_response && lm_response->length) {
422 memcpy(request.data.auth_crap.lm_resp,
423 lm_response->data,
424 MIN(lm_response->length, sizeof(request.data.auth_crap.lm_resp)));
425 request.data.auth_crap.lm_resp_len = lm_response->length;
426 }
427
428 if (nt_response && nt_response->length) {
429 if (nt_response->length > sizeof(request.data.auth_crap.nt_resp)) {
430 request.flags = request.flags | WBFLAG_BIG_NTLMV2_BLOB;
431 request.extra_len = nt_response->length;
432 request.extra_data.data = SMB_MALLOC_ARRAY(char, request.extra_len);
433 if (request.extra_data.data == NULL) {
434 return NT_STATUS_NO_MEMORY;
435 }
436 memcpy(request.extra_data.data, nt_response->data,
437 nt_response->length);
438
439 } else {
440 memcpy(request.data.auth_crap.nt_resp,
441 nt_response->data, nt_response->length);
442 }
443 request.data.auth_crap.nt_resp_len = nt_response->length;
444 }
445
446 result = winbindd_request_response(WINBINDD_PAM_AUTH_CRAP, &request, &response);
447 SAFE_FREE(request.extra_data.data);
448
449 /* Display response */
450
451 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
452 nt_status = NT_STATUS_UNSUCCESSFUL;
453 if (error_string)
454 *error_string = smb_xstrdup("Reading winbind reply failed!");
455 winbindd_free_response(&response);
456 return nt_status;
457 }
458
459 nt_status = (NT_STATUS(response.data.auth.nt_status));
460 if (!NT_STATUS_IS_OK(nt_status)) {
461 if (error_string)
462 *error_string = smb_xstrdup(response.data.auth.error_string);
463 winbindd_free_response(&response);
464 return nt_status;
465 }
466
467 if ((flags & WBFLAG_PAM_LMKEY) && lm_key) {
468 memcpy(lm_key, response.data.auth.first_8_lm_hash,
469 sizeof(response.data.auth.first_8_lm_hash));
470 }
471 if ((flags & WBFLAG_PAM_USER_SESSION_KEY) && user_session_key) {
472 memcpy(user_session_key, response.data.auth.user_session_key,
473 sizeof(response.data.auth.user_session_key));
474 }
475
476 if (flags & WBFLAG_PAM_UNIX_NAME) {
477 *unix_name = SMB_STRDUP(response.data.auth.unix_username);
478 if (!*unix_name) {
479 winbindd_free_response(&response);
480 return NT_STATUS_NO_MEMORY;
481 }
482 }
483
484 winbindd_free_response(&response);
485 return nt_status;
486 }
487
488 /* contact server to change user password using auth crap */
489 static NTSTATUS contact_winbind_change_pswd_auth_crap(const char *username,
490 const char *domain,
491 const DATA_BLOB new_nt_pswd,
492 const DATA_BLOB old_nt_hash_enc,
493 const DATA_BLOB new_lm_pswd,
494 const DATA_BLOB old_lm_hash_enc,
495 char **error_string)
496 {
497 NTSTATUS nt_status;
498 NSS_STATUS result;
499 struct winbindd_request request;
500 struct winbindd_response response;
501
502 if (!get_require_membership_sid())
503 {
504 if(error_string)
505 *error_string = smb_xstrdup("Can't get membership sid.");
506 return NT_STATUS_INVALID_PARAMETER;
507 }
508
509 ZERO_STRUCT(request);
510 ZERO_STRUCT(response);
511
512 if(username != NULL)
513 fstrcpy(request.data.chng_pswd_auth_crap.user, username);
514 if(domain != NULL)
515 fstrcpy(request.data.chng_pswd_auth_crap.domain,domain);
516
517 if(new_nt_pswd.length)
518 {
519 memcpy(request.data.chng_pswd_auth_crap.new_nt_pswd, new_nt_pswd.data, sizeof(request.data.chng_pswd_auth_crap.new_nt_pswd));
520 request.data.chng_pswd_auth_crap.new_nt_pswd_len = new_nt_pswd.length;
521 }
522
523 if(old_nt_hash_enc.length)
524 {
525 memcpy(request.data.chng_pswd_auth_crap.old_nt_hash_enc, old_nt_hash_enc.data, sizeof(request.data.chng_pswd_auth_crap.old_nt_hash_enc));
526 request.data.chng_pswd_auth_crap.old_nt_hash_enc_len = old_nt_hash_enc.length;
527 }
528
529 if(new_lm_pswd.length)
530 {
531 memcpy(request.data.chng_pswd_auth_crap.new_lm_pswd, new_lm_pswd.data, sizeof(request.data.chng_pswd_auth_crap.new_lm_pswd));
532 request.data.chng_pswd_auth_crap.new_lm_pswd_len = new_lm_pswd.length;
533 }
534
535 if(old_lm_hash_enc.length)
536 {
537 memcpy(request.data.chng_pswd_auth_crap.old_lm_hash_enc, old_lm_hash_enc.data, sizeof(request.data.chng_pswd_auth_crap.old_lm_hash_enc));
538 request.data.chng_pswd_auth_crap.old_lm_hash_enc_len = old_lm_hash_enc.length;
539 }
540
541 result = winbindd_request_response(WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, &request, &response);
542
543 /* Display response */
544
545 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0))
546 {
547 nt_status = NT_STATUS_UNSUCCESSFUL;
548 if (error_string)
549 *error_string = smb_xstrdup("Reading winbind reply failed!");
550 winbindd_free_response(&response);
551 return nt_status;
552 }
553
554 nt_status = (NT_STATUS(response.data.auth.nt_status));
555 if (!NT_STATUS_IS_OK(nt_status))
556 {
557 if (error_string)
558 *error_string = smb_xstrdup(response.data.auth.error_string);
559 winbindd_free_response(&response);
560 return nt_status;
561 }
562
563 winbindd_free_response(&response);
564
565 return nt_status;
566 }
567
568 static NTSTATUS winbind_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
569 {
570 static const char zeros[16] = { 0, };
571 NTSTATUS nt_status;
572 char *error_string = NULL;
573 uint8 lm_key[8];
574 uint8 user_sess_key[16];
575 char *unix_name = NULL;
576
577 nt_status = contact_winbind_auth_crap(ntlmssp_state->user, ntlmssp_state->domain,
578 ntlmssp_state->client.netbios_name,
579 &ntlmssp_state->chal,
580 &ntlmssp_state->lm_resp,
581 &ntlmssp_state->nt_resp,
582 WBFLAG_PAM_LMKEY | WBFLAG_PAM_USER_SESSION_KEY | WBFLAG_PAM_UNIX_NAME,
583 lm_key, user_sess_key,
584 &error_string, &unix_name);
585
586 if (NT_STATUS_IS_OK(nt_status)) {
587 if (memcmp(lm_key, zeros, 8) != 0) {
588 *lm_session_key = data_blob_talloc(ntlmssp_state, NULL, 16);
589 memcpy(lm_session_key->data, lm_key, 8);
590 memset(lm_session_key->data+8, '\0', 8);
591 }
592
593 if (memcmp(user_sess_key, zeros, 16) != 0) {
594 *user_session_key = data_blob_talloc(ntlmssp_state, user_sess_key, 16);
595 }
596 ntlmssp_state->callback_private = talloc_strdup(ntlmssp_state,
597 unix_name);
598 } else {
599 DEBUG(NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED) ? 0 : 3,
600 ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
601 ntlmssp_state->domain, ntlmssp_state->user,
602 ntlmssp_state->client.netbios_name,
603 error_string ? error_string : "unknown error (NULL)"));
604 ntlmssp_state->callback_private = NULL;
605 }
606
607 SAFE_FREE(error_string);
608 SAFE_FREE(unix_name);
609 return nt_status;
610 }
611
612 static NTSTATUS local_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
613 {
614 NTSTATUS nt_status;
615 struct samr_Password lm_pw, nt_pw;
616
617 nt_lm_owf_gen (opt_password, nt_pw.hash, lm_pw.hash);
618
619 nt_status = ntlm_password_check(ntlmssp_state,
620 true, true, 0,
621 &ntlmssp_state->chal,
622 &ntlmssp_state->lm_resp,
623 &ntlmssp_state->nt_resp,
624 ntlmssp_state->user,
625 ntlmssp_state->user,
626 ntlmssp_state->domain,
627 &lm_pw, &nt_pw, user_session_key, lm_session_key);
628
629 if (NT_STATUS_IS_OK(nt_status)) {
630 ntlmssp_state->callback_private = talloc_asprintf(ntlmssp_state,
631 "%s%c%s", ntlmssp_state->domain,
632 *lp_winbind_separator(),
633 ntlmssp_state->user);
634 } else {
635 DEBUG(3, ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
636 ntlmssp_state->domain, ntlmssp_state->user,
637 ntlmssp_state->client.netbios_name,
638 nt_errstr(nt_status)));
639 ntlmssp_state->callback_private = NULL;
640 }
641 return nt_status;
642 }
643
644 static NTSTATUS ntlm_auth_start_ntlmssp_client(struct ntlmssp_state **client_ntlmssp_state)
645 {
646 NTSTATUS status;
647 if ( (opt_username == NULL) || (opt_domain == NULL) ) {
648 status = NT_STATUS_UNSUCCESSFUL;
649 DEBUG(1, ("Need username and domain for NTLMSSP\n"));
650 return NT_STATUS_INVALID_PARAMETER;
651 }
652
653 status = ntlmssp_client_start(NULL,
654 global_myname(),
655 lp_workgroup(),
656 lp_client_ntlmv2_auth(),
657 client_ntlmssp_state);
658
659 if (!NT_STATUS_IS_OK(status)) {
660 DEBUG(1, ("Could not start NTLMSSP client: %s\n",
661 nt_errstr(status)));
662 TALLOC_FREE(*client_ntlmssp_state);
663 return status;
664 }
665
666 status = ntlmssp_set_username(*client_ntlmssp_state, opt_username);
667
668 if (!NT_STATUS_IS_OK(status)) {
669 DEBUG(1, ("Could not set username: %s\n",
670 nt_errstr(status)));
671 TALLOC_FREE(*client_ntlmssp_state);
672 return status;
673 }
674
675 status = ntlmssp_set_domain(*client_ntlmssp_state, opt_domain);
676
677 if (!NT_STATUS_IS_OK(status)) {
678 DEBUG(1, ("Could not set domain: %s\n",
679 nt_errstr(status)));
680 TALLOC_FREE(*client_ntlmssp_state);
681 return status;
682 }
683
684 if (opt_password) {
685 status = ntlmssp_set_password(*client_ntlmssp_state, opt_password);
686
687 if (!NT_STATUS_IS_OK(status)) {
688 DEBUG(1, ("Could not set password: %s\n",
689 nt_errstr(status)));
690 TALLOC_FREE(*client_ntlmssp_state);
691 return status;
692 }
693 }
694
695 return NT_STATUS_OK;
696 }
697
698 static NTSTATUS ntlm_auth_start_ntlmssp_server(struct ntlmssp_state **ntlmssp_state)
699 {
700 NTSTATUS status;
701 const char *netbios_name;
702 const char *netbios_domain;
703 const char *dns_name;
704 char *dns_domain;
705 bool is_standalone = false;
706
707 if (opt_password) {
708 netbios_name = global_myname();
709 netbios_domain = lp_workgroup();
710 } else {
711 netbios_name = get_winbind_netbios_name();
712 netbios_domain = get_winbind_domain();
713 }
714 /* This should be a 'netbios domain -> DNS domain' mapping */
715 dns_domain = get_mydnsdomname(talloc_tos());
716 if (dns_domain) {
717 strlower_m(dns_domain);
718 }
719 dns_name = get_mydnsfullname();
720
721 status = ntlmssp_server_start(NULL,
722 is_standalone,
723 netbios_name,
724 netbios_domain,
725 dns_name,
726 dns_domain,
727 ntlmssp_state);
728 if (!NT_STATUS_IS_OK(status)) {
729 DEBUG(1, ("Could not start NTLMSSP server: %s\n",
730 nt_errstr(status)));
731 return status;
732 }
733
734 /* Have we been given a local password, or should we ask winbind? */
735 if (opt_password) {
736 (*ntlmssp_state)->check_password = local_pw_check;
737 } else {
738 (*ntlmssp_state)->check_password = winbind_pw_check;
739 }
740 return NT_STATUS_OK;
741 }
742
743 /*******************************************************************
744 Used by firefox to drive NTLM auth to IIS servers.
745 *******************************************************************/
746
747 static NTSTATUS do_ccache_ntlm_auth(DATA_BLOB initial_msg, DATA_BLOB challenge_msg,
748 DATA_BLOB *reply)
749 {
750 struct winbindd_request wb_request;
751 struct winbindd_response wb_response;
752 int ctrl = 0;
753 NSS_STATUS result;
754
755 /* get winbindd to do the ntlmssp step on our behalf */
756 ZERO_STRUCT(wb_request);
757 ZERO_STRUCT(wb_response);
758
759 /*
760 * This is tricky here. If we set krb5_auth in pam_winbind.conf
761 * creds for users in trusted domain will be stored the winbindd
762 * child of the trusted domain. If we ask the primary domain for
763 * ntlm_ccache_auth, it will fail. So, we have to ask the trusted
764 * domain's child for ccache_ntlm_auth. that is to say, we have to
765 * set WBFLAG_PAM_CONTACT_TRUSTDOM in request.flags.
766 */
767 ctrl = get_pam_winbind_config();
768
769 if (ctrl | WINBIND_KRB5_AUTH) {
770 wb_request.flags |= WBFLAG_PAM_CONTACT_TRUSTDOM;
771 }
772
773 fstr_sprintf(wb_request.data.ccache_ntlm_auth.user,
774 "%s%c%s", opt_domain, winbind_separator(), opt_username);
775 wb_request.data.ccache_ntlm_auth.uid = geteuid();
776 wb_request.data.ccache_ntlm_auth.initial_blob_len = initial_msg.length;
777 wb_request.data.ccache_ntlm_auth.challenge_blob_len = challenge_msg.length;
778 wb_request.extra_len = initial_msg.length + challenge_msg.length;
779
780 if (wb_request.extra_len > 0) {
781 wb_request.extra_data.data = SMB_MALLOC_ARRAY(char, wb_request.extra_len);
782 if (wb_request.extra_data.data == NULL) {
783 return NT_STATUS_NO_MEMORY;
784 }
785
786 memcpy(wb_request.extra_data.data, initial_msg.data, initial_msg.length);
787 memcpy(wb_request.extra_data.data + initial_msg.length,
788 challenge_msg.data, challenge_msg.length);
789 }
790
791 result = winbindd_request_response(WINBINDD_CCACHE_NTLMAUTH, &wb_request, &wb_response);
792 SAFE_FREE(wb_request.extra_data.data);
793
794 if (result != NSS_STATUS_SUCCESS) {
795 winbindd_free_response(&wb_response);
796 return NT_STATUS_UNSUCCESSFUL;
797 }
798
799 if (reply) {
800 *reply = data_blob(wb_response.extra_data.data,
801 wb_response.data.ccache_ntlm_auth.auth_blob_len);
802 if (wb_response.data.ccache_ntlm_auth.auth_blob_len > 0 &&
803 reply->data == NULL) {
804 winbindd_free_response(&wb_response);
805 return NT_STATUS_NO_MEMORY;
806 }
807 }
808
809 winbindd_free_response(&wb_response);
810 return NT_STATUS_MORE_PROCESSING_REQUIRED;
811 }
812
813 static void manage_squid_ntlmssp_request(struct ntlm_auth_state *state,
814 char *buf, int length)
815 {
816 DATA_BLOB request, reply;
817 NTSTATUS nt_status;
818
819 if (strlen(buf) < 2) {
820 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
821 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
822 return;
823 }
824
825 if (strlen(buf) > 3) {
826 if(strncmp(buf, "SF ", 3) == 0){
827 DEBUG(10, ("Setting flags to negotioate\n"));
828 TALLOC_FREE(state->want_feature_list);
829 state->want_feature_list = talloc_strdup(state->mem_ctx,
830 buf+3);
831 x_fprintf(x_stdout, "OK\n");
832 return;
833 }
834 request = base64_decode_data_blob(buf + 3);
835 } else {
836 request = data_blob_null;
837 }
838
839 if ((strncmp(buf, "PW ", 3) == 0)) {
840 /* The calling application wants us to use a local password
841 * (rather than winbindd) */
842
843 opt_password = SMB_STRNDUP((const char *)request.data,
844 request.length);
845
846 if (opt_password == NULL) {
847 DEBUG(1, ("Out of memory\n"));
848 x_fprintf(x_stdout, "BH Out of memory\n");
849 data_blob_free(&request);
850 return;
851 }
852
853 x_fprintf(x_stdout, "OK\n");
854 data_blob_free(&request);
855 return;
856 }
857
858 if (strncmp(buf, "YR", 2) == 0) {
859 TALLOC_FREE(state->ntlmssp_state);
860 state->svr_state = SERVER_INITIAL;
861 } else if (strncmp(buf, "KK", 2) == 0) {
862 /* No special preprocessing required */
863 } else if (strncmp(buf, "GF", 2) == 0) {
864 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
865
866 if (state->svr_state == SERVER_FINISHED) {
867 x_fprintf(x_stdout, "GF 0x%08x\n", state->neg_flags);
868 }
869 else {
870 x_fprintf(x_stdout, "BH\n");
871 }
872 data_blob_free(&request);
873 return;
874 } else if (strncmp(buf, "GK", 2) == 0) {
875 DEBUG(10, ("Requested NTLMSSP session key\n"));
876 if(state->have_session_key) {
877 char *key64 = base64_encode_data_blob(state->mem_ctx,
878 state->session_key);
879 x_fprintf(x_stdout, "GK %s\n", key64?key64:"<NULL>");
880 TALLOC_FREE(key64);
881 } else {
882 x_fprintf(x_stdout, "BH\n");
883 }
884
885 data_blob_free(&request);
886 return;
887 } else {
888 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
889 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
890 return;
891 }
892
893 if (!state->ntlmssp_state) {
894 nt_status = ntlm_auth_start_ntlmssp_server(
895 &state->ntlmssp_state);
896 if (!NT_STATUS_IS_OK(nt_status)) {
897 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
898 return;
899 }
900 ntlmssp_want_feature_list(state->ntlmssp_state,
901 state->want_feature_list);
902 }
903
904 DEBUG(10, ("got NTLMSSP packet:\n"));
905 dump_data(10, request.data, request.length);
906
907 nt_status = ntlmssp_update(state->ntlmssp_state, request, &reply);
908
909 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
910 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
911 reply);
912 x_fprintf(x_stdout, "TT %s\n", reply_base64);
913 TALLOC_FREE(reply_base64);
914 data_blob_free(&reply);
915 state->svr_state = SERVER_CHALLENGE;
916 DEBUG(10, ("NTLMSSP challenge\n"));
917 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
918 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
919 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
920
921 TALLOC_FREE(state->ntlmssp_state);
922 } else if (!NT_STATUS_IS_OK(nt_status)) {
923 x_fprintf(x_stdout, "NA %s\n", nt_errstr(nt_status));
924 DEBUG(10, ("NTLMSSP %s\n", nt_errstr(nt_status)));
925 } else {
926 x_fprintf(x_stdout, "AF %s\n",
927 (char *)state->ntlmssp_state->callback_private);
928 DEBUG(10, ("NTLMSSP OK!\n"));
929
930 if(state->have_session_key)
931 data_blob_free(&state->session_key);
932 state->session_key = data_blob(
933 state->ntlmssp_state->session_key.data,
934 state->ntlmssp_state->session_key.length);
935 state->neg_flags = state->ntlmssp_state->neg_flags;
936 state->have_session_key = true;
937 state->svr_state = SERVER_FINISHED;
938 }
939
940 data_blob_free(&request);
941 }
942
943 static void manage_client_ntlmssp_request(struct ntlm_auth_state *state,
944 char *buf, int length)
945 {
946 DATA_BLOB request, reply;
947 NTSTATUS nt_status;
948
949 if (!opt_username || !*opt_username) {
950 x_fprintf(x_stderr, "username must be specified!\n\n");
951 exit(1);
952 }
953
954 if (strlen(buf) < 2) {
955 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
956 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
957 return;
958 }
959
960 if (strlen(buf) > 3) {
961 if(strncmp(buf, "SF ", 3) == 0) {
962 DEBUG(10, ("Looking for flags to negotiate\n"));
963 talloc_free(state->want_feature_list);
964 state->want_feature_list = talloc_strdup(state->mem_ctx,
965 buf+3);
966 x_fprintf(x_stdout, "OK\n");
967 return;
968 }
969 request = base64_decode_data_blob(buf + 3);
970 } else {
971 request = data_blob_null;
972 }
973
974 if (strncmp(buf, "PW ", 3) == 0) {
975 /* We asked for a password and obviously got it :-) */
976
977 opt_password = SMB_STRNDUP((const char *)request.data,
978 request.length);
979
980 if (opt_password == NULL) {
981 DEBUG(1, ("Out of memory\n"));
982 x_fprintf(x_stdout, "BH Out of memory\n");
983 data_blob_free(&request);
984 return;
985 }
986
987 x_fprintf(x_stdout, "OK\n");
988 data_blob_free(&request);
989 return;
990 }
991
992 if (!state->ntlmssp_state && use_cached_creds) {
993 /* check whether cached credentials are usable. */
994 DATA_BLOB empty_blob = data_blob_null;
995
996 nt_status = do_ccache_ntlm_auth(empty_blob, empty_blob, NULL);
997 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
998 /* failed to use cached creds */
999 use_cached_creds = False;
1000 }
1001 }
1002
1003 if (opt_password == NULL && !use_cached_creds) {
1004 /* Request a password from the calling process. After
1005 sending it, the calling process should retry asking for the
1006 negotiate. */
1007
1008 DEBUG(10, ("Requesting password\n"));
1009 x_fprintf(x_stdout, "PW\n");
1010 return;
1011 }
1012
1013 if (strncmp(buf, "YR", 2) == 0) {
1014 TALLOC_FREE(state->ntlmssp_state);
1015 state->cli_state = CLIENT_INITIAL;
1016 } else if (strncmp(buf, "TT", 2) == 0) {
1017 /* No special preprocessing required */
1018 } else if (strncmp(buf, "GF", 2) == 0) {
1019 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
1020
1021 if(state->cli_state == CLIENT_FINISHED) {
1022 x_fprintf(x_stdout, "GF 0x%08x\n", state->neg_flags);
1023 }
1024 else {
1025 x_fprintf(x_stdout, "BH\n");
1026 }
1027
1028 data_blob_free(&request);
1029 return;
1030 } else if (strncmp(buf, "GK", 2) == 0 ) {
1031 DEBUG(10, ("Requested session key\n"));
1032
1033 if(state->cli_state == CLIENT_FINISHED) {
1034 char *key64 = base64_encode_data_blob(state->mem_ctx,
1035 state->session_key);
1036 x_fprintf(x_stdout, "GK %s\n", key64?key64:"<NULL>");
1037 TALLOC_FREE(key64);
1038 }
1039 else {
1040 x_fprintf(x_stdout, "BH\n");
1041 }
1042
1043 data_blob_free(&request);
1044 return;
1045 } else {
1046 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
1047 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
1048 return;
1049 }
1050
1051 if (!state->ntlmssp_state) {
1052 nt_status = ntlm_auth_start_ntlmssp_client(
1053 &state->ntlmssp_state);
1054 if (!NT_STATUS_IS_OK(nt_status)) {
1055 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
1056 return;
1057 }
1058 ntlmssp_want_feature_list(state->ntlmssp_state,
1059 state->want_feature_list);
1060 state->initial_message = data_blob_null;
1061 }
1062
1063 DEBUG(10, ("got NTLMSSP packet:\n"));
1064 dump_data(10, request.data, request.length);
1065
1066 if (use_cached_creds && !opt_password &&
1067 (state->cli_state == CLIENT_RESPONSE)) {
1068 nt_status = do_ccache_ntlm_auth(state->initial_message, request,
1069 &reply);
1070 } else {
1071 nt_status = ntlmssp_update(state->ntlmssp_state, request,
1072 &reply);
1073 }
1074
1075 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1076 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
1077 reply);
1078 if (state->cli_state == CLIENT_INITIAL) {
1079 x_fprintf(x_stdout, "YR %s\n", reply_base64);
1080 state->initial_message = reply;
1081 state->cli_state = CLIENT_RESPONSE;
1082 } else {
1083 x_fprintf(x_stdout, "KK %s\n", reply_base64);
1084 data_blob_free(&reply);
1085 }
1086 TALLOC_FREE(reply_base64);
1087 DEBUG(10, ("NTLMSSP challenge\n"));
1088 } else if (NT_STATUS_IS_OK(nt_status)) {
1089 char *reply_base64 = base64_encode_data_blob(talloc_tos(),
1090 reply);
1091 x_fprintf(x_stdout, "AF %s\n", reply_base64);
1092 TALLOC_FREE(reply_base64);
1093
1094 if(state->have_session_key)
1095 data_blob_free(&state->session_key);
1096
1097 state->session_key = data_blob(
1098 state->ntlmssp_state->session_key.data,
1099 state->ntlmssp_state->session_key.length);
1100 state->neg_flags = state->ntlmssp_state->neg_flags;
1101 state->have_session_key = true;
1102
1103 DEBUG(10, ("NTLMSSP OK!\n"));
1104 state->cli_state = CLIENT_FINISHED;
1105 TALLOC_FREE(state->ntlmssp_state);
1106 } else {
1107 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
1108 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
1109 state->cli_state = CLIENT_ERROR;
1110 TALLOC_FREE(state->ntlmssp_state);
1111 }
1112
1113 data_blob_free(&request);
1114 }
1115
1116 static void manage_squid_basic_request(struct ntlm_auth_state *state,
1117 char *buf, int length)
1118 {
1119 char *user, *pass;
1120 user=buf;
1121
1122 pass=(char *)memchr(buf,' ',length);
1123 if (!pass) {
1124 DEBUG(2, ("Password not found. Denying access\n"));
1125 x_fprintf(x_stdout, "ERR\n");
1126 return;
1127 }
1128 *pass='\0';
1129 pass++;
1130
1131 if (state->helper_mode == SQUID_2_5_BASIC) {
1132 rfc1738_unescape(user);
1133 rfc1738_unescape(pass);
1134 }
1135
1136 if (check_plaintext_auth(user, pass, False)) {
1137 x_fprintf(x_stdout, "OK\n");
1138 } else {
1139 x_fprintf(x_stdout, "ERR\n");
1140 }
1141 }
1142
1143 static void offer_gss_spnego_mechs(void) {
1144
1145 DATA_BLOB token;
1146 struct spnego_data spnego;
1147 ssize_t len;
1148 char *reply_base64;
1149 TALLOC_CTX *ctx = talloc_tos();
1150 char *principal;
1151 char *myname_lower;
1152
1153 ZERO_STRUCT(spnego);
1154
1155 myname_lower = talloc_strdup(ctx, global_myname());
1156 if (!myname_lower) {
1157 return;
1158 }
1159 strlower_m(myname_lower);
1160
1161 principal = talloc_asprintf(ctx, "%s$@%s", myname_lower, lp_realm());
1162 if (!principal) {
1163 return;
1164 }
1165
1166 /* Server negTokenInit (mech offerings) */
1167 spnego.type = SPNEGO_NEG_TOKEN_INIT;
1168 spnego.negTokenInit.mechTypes = talloc_array(ctx, const char *, 3);
1169 #ifdef HAVE_KRB5
1170 spnego.negTokenInit.mechTypes[0] = talloc_strdup(ctx, OID_KERBEROS5_OLD);
1171 spnego.negTokenInit.mechTypes[1] = talloc_strdup(ctx, OID_NTLMSSP);
1172 spnego.negTokenInit.mechTypes[2] = NULL;
1173 #else
1174 spnego.negTokenInit.mechTypes[0] = talloc_strdup(ctx, OID_NTLMSSP);
1175 spnego.negTokenInit.mechTypes[1] = NULL;
1176 #endif
1177
1178
1179 spnego.negTokenInit.mechListMIC = data_blob_talloc(ctx, principal,
1180 strlen(principal));
1181
1182 len = spnego_write_data(ctx, &token, &spnego);
1183 spnego_free_data(&spnego);
1184
1185 if (len == -1) {
1186 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1187 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1188 return;
1189 }
1190
1191 reply_base64 = base64_encode_data_blob(talloc_tos(), token);
1192 x_fprintf(x_stdout, "TT %s *\n", reply_base64);
1193
1194 TALLOC_FREE(reply_base64);
1195 data_blob_free(&token);
1196 DEBUG(10, ("sent SPNEGO negTokenInit\n"));
1197 return;
1198 }
1199
1200 static void manage_gss_spnego_request(struct ntlm_auth_state *state,
1201 char *buf, int length)
1202 {
1203 static struct ntlmssp_state *ntlmssp_state = NULL;
1204 struct spnego_data request, response;
1205 DATA_BLOB token;
1206 NTSTATUS status;
1207 ssize_t len;
1208 TALLOC_CTX *ctx = talloc_tos();
1209
1210 char *user = NULL;
1211 char *domain = NULL;
1212
1213 const char *reply_code;
1214 char *reply_base64;
1215 char *reply_argument = NULL;
1216
1217 if (strlen(buf) < 2) {
1218 DEBUG(1, ("SPENGO query [%s] invalid", buf));
1219 x_fprintf(x_stdout, "BH SPENGO query invalid\n");
1220 return;
1221 }
1222
1223 if (strncmp(buf, "YR", 2) == 0) {
1224 TALLOC_FREE(ntlmssp_state);
1225 } else if (strncmp(buf, "KK", 2) == 0) {
1226 ;
1227 } else {
1228 DEBUG(1, ("SPENGO query [%s] invalid", buf));
1229 x_fprintf(x_stdout, "BH SPENGO query invalid\n");
1230 return;
1231 }
1232
1233 if ( (strlen(buf) == 2)) {
1234
1235 /* no client data, get the negTokenInit offering
1236 mechanisms */
1237
1238 offer_gss_spnego_mechs();
1239 return;
1240 }
1241
1242 /* All subsequent requests have a blob. This might be negTokenInit or negTokenTarg */
1243
1244 if (strlen(buf) <= 3) {
1245 DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
1246 x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
1247 return;
1248 }
1249
1250 token = base64_decode_data_blob(buf + 3);
1251 len = spnego_read_data(ctx, token, &request);
1252 data_blob_free(&token);
1253
1254 if (len == -1) {
1255 DEBUG(1, ("GSS-SPNEGO query [%s] invalid", buf));
1256 x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
1257 return;
1258 }
1259
1260 if (request.type == SPNEGO_NEG_TOKEN_INIT) {
1261
1262 /* Second request from Client. This is where the
1263 client offers its mechanism to use. */
1264
1265 if ( (request.negTokenInit.mechTypes == NULL) ||
1266 (request.negTokenInit.mechTypes[0] == NULL) ) {
1267 DEBUG(1, ("Client did not offer any mechanism"));
1268 x_fprintf(x_stdout, "BH Client did not offer any "
1269 "mechanism\n");
1270 return;
1271 }
1272
1273 status = NT_STATUS_UNSUCCESSFUL;
1274 if (strcmp(request.negTokenInit.mechTypes[0], OID_NTLMSSP) == 0) {
1275
1276 if ( request.negTokenInit.mechToken.data == NULL ) {
1277 DEBUG(1, ("Client did not provide NTLMSSP data\n"));
1278 x_fprintf(x_stdout, "BH Client did not provide "
1279 "NTLMSSP data\n");
1280 return;
1281 }
1282
1283 if ( ntlmssp_state != NULL ) {
1284 DEBUG(1, ("Client wants a new NTLMSSP challenge, but "
1285 "already got one\n"));
1286 x_fprintf(x_stdout, "BH Client wants a new "
1287 "NTLMSSP challenge, but "
1288 "already got one\n");
1289 TALLOC_FREE(ntlmssp_state);
1290 return;
1291 }
1292
1293 if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
1294 x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1295 return;
1296 }
1297
1298 DEBUG(10, ("got NTLMSSP packet:\n"));
1299 dump_data(10, request.negTokenInit.mechToken.data,
1300 request.negTokenInit.mechToken.length);
1301
1302 response.type = SPNEGO_NEG_TOKEN_TARG;
1303 response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_NTLMSSP);
1304 response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1305
1306 status = ntlmssp_update(ntlmssp_state,
1307 request.negTokenInit.mechToken,
1308 &response.negTokenTarg.responseToken);
1309 }
1310
1311 #ifdef HAVE_KRB5
1312 if (strcmp(request.negTokenInit.mechTypes[0], OID_KERBEROS5_OLD) == 0) {
1313
1314 TALLOC_CTX *mem_ctx = talloc_init("manage_gss_spnego_request");
1315 char *principal;
1316 DATA_BLOB ap_rep;
1317 DATA_BLOB session_key;
1318 struct PAC_LOGON_INFO *logon_info = NULL;
1319
1320 if ( request.negTokenInit.mechToken.data == NULL ) {
1321 DEBUG(1, ("Client did not provide Kerberos data\n"));
1322 x_fprintf(x_stdout, "BH Client did not provide "
1323 "Kerberos data\n");
1324 return;
1325 }
1326
1327 response.type = SPNEGO_NEG_TOKEN_TARG;
1328 response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_KERBEROS5_OLD);
1329 response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1330 response.negTokenTarg.responseToken = data_blob_talloc(ctx, NULL, 0);
1331
1332 status = ads_verify_ticket(mem_ctx, lp_realm(), 0,
1333 &request.negTokenInit.mechToken,
1334 &principal, &logon_info, &ap_rep,
1335 &session_key, True);
1336
1337 /* Now in "principal" we have the name we are
1338 authenticated as. */
1339
1340 if (NT_STATUS_IS_OK(status)) {
1341
1342 domain = strchr_m(principal, '@');
1343
1344 if (domain == NULL) {
1345 DEBUG(1, ("Did not get a valid principal "
1346 "from ads_verify_ticket\n"));
1347 x_fprintf(x_stdout, "BH Did not get a "
1348 "valid principal from "
1349 "ads_verify_ticket\n");
1350 return;
1351 }
1352
1353 *domain++ = '\0';
1354 domain = SMB_STRDUP(domain);
1355 user = SMB_STRDUP(principal);
1356
1357 data_blob_free(&ap_rep);
1358 }
1359
1360 TALLOC_FREE(mem_ctx);
1361 }
1362 #endif
1363
1364 } else {
1365
1366 if ( (request.negTokenTarg.supportedMech == NULL) ||
1367 ( strcmp(request.negTokenTarg.supportedMech, OID_NTLMSSP) != 0 ) ) {
1368 /* Kerberos should never send a negTokenTarg, OID_NTLMSSP
1369 is the only one we support that sends this stuff */
1370 DEBUG(1, ("Got a negTokenTarg for something non-NTLMSSP: %s\n",
1371 request.negTokenTarg.supportedMech));
1372 x_fprintf(x_stdout, "BH Got a negTokenTarg for "
1373 "something non-NTLMSSP\n");
1374 return;
1375 }
1376
1377 if (request.negTokenTarg.responseToken.data == NULL) {
1378 DEBUG(1, ("Got a negTokenTarg without a responseToken!\n"));
1379 x_fprintf(x_stdout, "BH Got a negTokenTarg without a "
1380 "responseToken!\n");
1381 return;
1382 }
1383
1384 status = ntlmssp_update(ntlmssp_state,
1385 request.negTokenTarg.responseToken,
1386 &response.negTokenTarg.responseToken);
1387
1388 response.type = SPNEGO_NEG_TOKEN_TARG;
1389 response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_NTLMSSP);
1390 response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1391
1392 if (NT_STATUS_IS_OK(status)) {
1393 user = SMB_STRDUP(ntlmssp_state->user);
1394 domain = SMB_STRDUP(ntlmssp_state->domain);
1395 TALLOC_FREE(ntlmssp_state);
1396 }
1397 }
1398
1399 spnego_free_data(&request);
1400
1401 if (NT_STATUS_IS_OK(status)) {
1402 response.negTokenTarg.negResult = SPNEGO_ACCEPT_COMPLETED;
1403 reply_code = "AF";
1404 reply_argument = talloc_asprintf(ctx, "%s\\%s", domain, user);
1405 } else if (NT_STATUS_EQUAL(status,
1406 NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1407 response.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1408 reply_code = "TT";
1409 reply_argument = talloc_strdup(ctx, "*");
1410 } else {
1411 response.negTokenTarg.negResult = SPNEGO_REJECT;
1412 reply_code = "NA";
1413 reply_argument = talloc_strdup(ctx, nt_errstr(status));
1414 }
1415
1416 if (!reply_argument) {
1417 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1418 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1419 return;
1420 }
1421
1422 SAFE_FREE(user);
1423 SAFE_FREE(domain);
1424
1425 len = spnego_write_data(ctx, &token, &response);
1426 spnego_free_data(&response);
1427
1428 if (len == -1) {
1429 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1430 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1431 return;
1432 }
1433
1434 reply_base64 = base64_encode_data_blob(talloc_tos(), token);
1435
1436 x_fprintf(x_stdout, "%s %s %s\n",
1437 reply_code, reply_base64, reply_argument);
1438
1439 TALLOC_FREE(reply_base64);
1440 data_blob_free(&token);
1441
1442 return;
1443 }
1444
1445 static struct ntlmssp_state *client_ntlmssp_state = NULL;
1446
1447 static bool manage_client_ntlmssp_init(struct spnego_data spnego)
1448 {
1449 NTSTATUS status;
1450 DATA_BLOB null_blob = data_blob_null;
1451 DATA_BLOB to_server;
1452 char *to_server_base64;
1453 const char *my_mechs[] = {OID_NTLMSSP, NULL};
1454 TALLOC_CTX *ctx = talloc_tos();
1455
1456 DEBUG(10, ("Got spnego negTokenInit with NTLMSSP\n"));
1457
1458 if (client_ntlmssp_state != NULL) {
1459 DEBUG(1, ("Request for initial SPNEGO request where "
1460 "we already have a state\n"));
1461 return False;
1462 }
1463
1464 if (!client_ntlmssp_state) {
1465 if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_client(&client_ntlmssp_state))) {
1466 x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1467 return False;
1468 }
1469 }
1470
1471
1472 if (opt_password == NULL) {
1473
1474 /* Request a password from the calling process. After
1475 sending it, the calling process should retry with
1476 the negTokenInit. */
1477
1478 DEBUG(10, ("Requesting password\n"));
1479 x_fprintf(x_stdout, "PW\n");
1480 return True;
1481 }
1482
1483 spnego.type = SPNEGO_NEG_TOKEN_INIT;
1484 spnego.negTokenInit.mechTypes = my_mechs;
1485 spnego.negTokenInit.reqFlags = data_blob_null;
1486 spnego.negTokenInit.reqFlagsPadding = 0;
1487 spnego.negTokenInit.mechListMIC = null_blob;
1488
1489 status = ntlmssp_update(client_ntlmssp_state, null_blob,
1490 &spnego.negTokenInit.mechToken);
1491
1492 if ( !(NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) ||
1493 NT_STATUS_IS_OK(status)) ) {
1494 DEBUG(1, ("Expected OK or MORE_PROCESSING_REQUIRED, got: %s\n",
1495 nt_errstr(status)));
1496 TALLOC_FREE(client_ntlmssp_state);
1497 return False;
1498 }
1499
1500 spnego_write_data(ctx, &to_server, &spnego);
1501 data_blob_free(&spnego.negTokenInit.mechToken);
1502
1503 to_server_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1504 data_blob_free(&to_server);
1505 x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1506 TALLOC_FREE(to_server_base64);
1507 return True;
1508 }
1509
1510 static void manage_client_ntlmssp_targ(struct spnego_data spnego)
1511 {
1512 NTSTATUS status;
1513 DATA_BLOB null_blob = data_blob_null;
1514 DATA_BLOB request;
1515 DATA_BLOB to_server;
1516 char *to_server_base64;
1517 TALLOC_CTX *ctx = talloc_tos();
1518
1519 DEBUG(10, ("Got spnego negTokenTarg with NTLMSSP\n"));
1520
1521 if (client_ntlmssp_state == NULL) {
1522 DEBUG(1, ("Got NTLMSSP tArg without a client state\n"));
1523 x_fprintf(x_stdout, "BH Got NTLMSSP tArg without a client state\n");
1524 return;
1525 }
1526
1527 if (spnego.negTokenTarg.negResult == SPNEGO_REJECT) {
1528 x_fprintf(x_stdout, "NA\n");
1529 TALLOC_FREE(client_ntlmssp_state);
1530 return;
1531 }
1532
1533 if (spnego.negTokenTarg.negResult == SPNEGO_ACCEPT_COMPLETED) {
1534 x_fprintf(x_stdout, "AF\n");
1535 TALLOC_FREE(client_ntlmssp_state);
1536 return;
1537 }
1538
1539 status = ntlmssp_update(client_ntlmssp_state,
1540 spnego.negTokenTarg.responseToken,
1541 &request);
1542
1543 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1544 DEBUG(1, ("Expected MORE_PROCESSING_REQUIRED from "
1545 "ntlmssp_client_update, got: %s\n",
1546 nt_errstr(status)));
1547 x_fprintf(x_stdout, "BH Expected MORE_PROCESSING_REQUIRED from "
1548 "ntlmssp_client_update\n");
1549 data_blob_free(&request);
1550 TALLOC_FREE(client_ntlmssp_state);
1551 return;
1552 }
1553
1554 spnego.type = SPNEGO_NEG_TOKEN_TARG;
1555 spnego.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1556 spnego.negTokenTarg.supportedMech = (char *)OID_NTLMSSP;
1557 spnego.negTokenTarg.responseToken = request;
1558 spnego.negTokenTarg.mechListMIC = null_blob;
1559
1560 spnego_write_data(ctx, &to_server, &spnego);
1561 data_blob_free(&request);
1562
1563 to_server_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1564 data_blob_free(&to_server);
1565 x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1566 TALLOC_FREE(to_server_base64);
1567 return;
1568 }
1569
1570 #ifdef HAVE_KRB5
1571
1572 static bool manage_client_krb5_init(struct spnego_data spnego)
1573 {
1574 char *principal;
1575 DATA_BLOB tkt, to_server;
1576 DATA_BLOB session_key_krb5 = data_blob_null;
1577 struct spnego_data reply;
1578 char *reply_base64;
1579 int retval;
1580
1581 const char *my_mechs[] = {OID_KERBEROS5_OLD, NULL};
1582 ssize_t len;
1583 TALLOC_CTX *ctx = talloc_tos();
1584
1585 if ( (spnego.negTokenInit.mechListMIC.data == NULL) ||
1586 (spnego.negTokenInit.mechListMIC.length == 0) ) {
1587 DEBUG(1, ("Did not get a principal for krb5\n"));
1588 return False;
1589 }
1590
1591 principal = (char *)SMB_MALLOC(
1592 spnego.negTokenInit.mechListMIC.length+1);
1593
1594 if (principal == NULL) {
1595 DEBUG(1, ("Could not malloc principal\n"));
1596 return False;
1597 }
1598
1599 memcpy(principal, spnego.negTokenInit.mechListMIC.data,
1600 spnego.negTokenInit.mechListMIC.length);
1601 principal[spnego.negTokenInit.mechListMIC.length] = '\0';
1602
1603 retval = cli_krb5_get_ticket(ctx, principal, 0,
1604 &tkt, &session_key_krb5,
1605 0, NULL, NULL, NULL);
1606 if (retval) {
1607 char *user = NULL;
1608
1609 /* Let's try to first get the TGT, for that we need a
1610 password. */
1611
1612 if (opt_password == NULL) {
1613 DEBUG(10, ("Requesting password\n"));
1614 x_fprintf(x_stdout, "PW\n");
1615 return True;
1616 }
1617
1618 user = talloc_asprintf(talloc_tos(), "%s@%s", opt_username, opt_domain);
1619 if (!user) {
1620 return false;
1621 }
1622
1623 if ((retval = kerberos_kinit_password(user, opt_password, 0, NULL))) {
1624 DEBUG(10, ("Requesting TGT failed: %s\n", error_message(retval)));
1625 return False;
1626 }
1627
1628 retval = cli_krb5_get_ticket(ctx, principal, 0,
1629 &tkt, &session_key_krb5,
1630 0, NULL, NULL, NULL);
1631 if (retval) {
1632 DEBUG(10, ("Kinit suceeded, but getting a ticket failed: %s\n", error_message(retval)));
1633 return False;
1634 }
1635 }
1636
1637 data_blob_free(&session_key_krb5);
1638
1639 ZERO_STRUCT(reply);
1640
1641 reply.type = SPNEGO_NEG_TOKEN_INIT;
1642 reply.negTokenInit.mechTypes = my_mechs;
1643 reply.negTokenInit.reqFlags = data_blob_null;
1644 reply.negTokenInit.reqFlagsPadding = 0;
1645 reply.negTokenInit.mechToken = tkt;
1646 reply.negTokenInit.mechListMIC = data_blob_null;
1647
1648 len = spnego_write_data(ctx, &to_server, &reply);
1649 data_blob_free(&tkt);
1650
1651 if (len == -1) {
1652 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1653 return False;
1654 }
1655
1656 reply_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1657 x_fprintf(x_stdout, "KK %s *\n", reply_base64);
1658
1659 TALLOC_FREE(reply_base64);
1660 data_blob_free(&to_server);
1661 DEBUG(10, ("sent GSS-SPNEGO KERBEROS5 negTokenInit\n"));
1662 return True;
1663 }
1664
1665 static void manage_client_krb5_targ(struct spnego_data spnego)
1666 {
1667 switch (spnego.negTokenTarg.negResult) {
1668 case SPNEGO_ACCEPT_INCOMPLETE:
1669 DEBUG(1, ("Got a Kerberos negTokenTarg with ACCEPT_INCOMPLETE\n"));
1670 x_fprintf(x_stdout, "BH Got a Kerberos negTokenTarg with "
1671 "ACCEPT_INCOMPLETE\n");
1672 break;
1673 case SPNEGO_ACCEPT_COMPLETED:
1674 DEBUG(10, ("Accept completed\n"));
1675 x_fprintf(x_stdout, "AF\n");
1676 break;
1677 case SPNEGO_REJECT:
1678 DEBUG(10, ("Rejected\n"));
1679 x_fprintf(x_stdout, "NA\n");
1680 break;
1681 default:
1682 DEBUG(1, ("Got an invalid negTokenTarg\n"));
1683 x_fprintf(x_stdout, "AF\n");
1684 }
1685 }
1686
1687 #endif
1688
1689 static void manage_gss_spnego_client_request(struct ntlm_auth_state *state,
1690 char *buf, int length)
1691 {
1692 DATA_BLOB request;
1693 struct spnego_data spnego;
1694 ssize_t len;
1695 TALLOC_CTX *ctx = talloc_tos();
1696
1697 if (!opt_username || !*opt_username) {
1698 x_fprintf(x_stderr, "username must be specified!\n\n");
1699 exit(1);
1700 }
1701
1702 if (strlen(buf) <= 3) {
1703 DEBUG(1, ("SPNEGO query [%s] too short\n", buf));
1704 x_fprintf(x_stdout, "BH SPNEGO query too short\n");
1705 return;
1706 }
1707
1708 request = base64_decode_data_blob(buf+3);
1709
1710 if (strncmp(buf, "PW ", 3) == 0) {
1711
1712 /* We asked for a password and obviously got it :-) */
1713
1714 opt_password = SMB_STRNDUP((const char *)request.data, request.length);
1715
1716 if (opt_password == NULL) {
1717 DEBUG(1, ("Out of memory\n"));
1718 x_fprintf(x_stdout, "BH Out of memory\n");
1719 data_blob_free(&request);
1720 return;
1721 }
1722
1723 x_fprintf(x_stdout, "OK\n");
1724 data_blob_free(&request);
1725 return;
1726 }
1727
1728 if ( (strncmp(buf, "TT ", 3) != 0) &&
1729 (strncmp(buf, "AF ", 3) != 0) &&
1730 (strncmp(buf, "NA ", 3) != 0) ) {
1731 DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
1732 x_fprintf(x_stdout, "BH SPNEGO request invalid\n");
1733 data_blob_free(&request);
1734 return;
1735 }
1736
1737 /* So we got a server challenge to generate a SPNEGO
1738 client-to-server request... */
1739
1740 len = spnego_read_data(ctx, request, &spnego);
1741 data_blob_free(&request);
1742
1743 if (len == -1) {
1744 DEBUG(1, ("Could not read SPNEGO data for [%s]\n", buf));
1745 x_fprintf(x_stdout, "BH Could not read SPNEGO data\n");
1746 return;
1747 }
1748
1749 if (spnego.type == SPNEGO_NEG_TOKEN_INIT) {
1750
1751 /* The server offers a list of mechanisms */
1752
1753 const char **mechType = (const char **)spnego.negTokenInit.mechTypes;
1754
1755 while (*mechType != NULL) {
1756
1757 #ifdef HAVE_KRB5
1758 if ( (strcmp(*mechType, OID_KERBEROS5_OLD) == 0) ||
1759 (strcmp(*mechType, OID_KERBEROS5) == 0) ) {
1760 if (manage_client_krb5_init(spnego))
1761 goto out;
1762 }
1763 #endif
1764
1765 if (strcmp(*mechType, OID_NTLMSSP) == 0) {
1766 if (manage_client_ntlmssp_init(spnego))
1767 goto out;
1768 }
1769
1770 mechType++;
1771 }
1772
1773 DEBUG(1, ("Server offered no compatible mechanism\n"));
1774 x_fprintf(x_stdout, "BH Server offered no compatible mechanism\n");
1775 return;
1776 }
1777
1778 if (spnego.type == SPNEGO_NEG_TOKEN_TARG) {
1779
1780 if (spnego.negTokenTarg.supportedMech == NULL) {
1781 /* On accept/reject Windows does not send the
1782 mechanism anymore. Handle that here and
1783 shut down the mechanisms. */
1784
1785 switch (spnego.negTokenTarg.negResult) {
1786 case SPNEGO_ACCEPT_COMPLETED:
1787 x_fprintf(x_stdout, "AF\n");
1788 break;
1789 case SPNEGO_REJECT:
1790 x_fprintf(x_stdout, "NA\n");
1791 break;
1792 default:
1793 DEBUG(1, ("Got a negTokenTarg with no mech and an "
1794 "unknown negResult: %d\n",
1795 spnego.negTokenTarg.negResult));
1796 x_fprintf(x_stdout, "BH Got a negTokenTarg with"
1797 " no mech and an unknown "
1798 "negResult\n");
1799 }
1800
1801 TALLOC_FREE(client_ntlmssp_state);
1802 goto out;
1803 }
1804
1805 if (strcmp(spnego.negTokenTarg.supportedMech,
1806 OID_NTLMSSP) == 0) {
1807 manage_client_ntlmssp_targ(spnego);
1808 goto out;
1809 }
1810
1811 #if HAVE_KRB5
1812 if (strcmp(spnego.negTokenTarg.supportedMech,
1813 OID_KERBEROS5_OLD) == 0) {
1814 manage_client_krb5_targ(spnego);
1815 goto out;
1816 }
1817 #endif
1818
1819 }
1820
1821 DEBUG(1, ("Got an SPNEGO token I could not handle [%s]!\n", buf));
1822 x_fprintf(x_stdout, "BH Got an SPNEGO token I could not handle\n");
1823 return;
1824
1825 out:
1826 spnego_free_data(&spnego);
1827 return;
1828 }
1829
1830 static void manage_ntlm_server_1_request(struct ntlm_auth_state *state,
1831 char *buf, int length)
1832 {
1833 char *request, *parameter;
1834 static DATA_BLOB challenge;
1835 static DATA_BLOB lm_response;
1836 static DATA_BLOB nt_response;
1837 static char *full_username;
1838 static char *username;
1839 static char *domain;
1840 static char *plaintext_password;
1841 static bool ntlm_server_1_user_session_key;
1842 static bool ntlm_server_1_lm_session_key;
1843
1844 if (strequal(buf, ".")) {
1845 if (!full_username && !username) {
1846 x_fprintf(x_stdout, "Error: No username supplied!\n");
1847 } else if (plaintext_password) {
1848 /* handle this request as plaintext */
1849 if (!full_username) {
1850 if (asprintf(&full_username, "%s%c%s", domain, winbind_separator(), username) == -1) {
1851 x_fprintf(x_stdout, "Error: Out of memory in asprintf!\n.\n");
1852 return;
1853 }
1854 }
1855 if (check_plaintext_auth(full_username, plaintext_password, False)) {
1856 x_fprintf(x_stdout, "Authenticated: Yes\n");
1857 } else {
1858 x_fprintf(x_stdout, "Authenticated: No\n");
1859 }
1860 } else if (!lm_response.data && !nt_response.data) {
1861 x_fprintf(x_stdout, "Error: No password supplied!\n");
1862 } else if (!challenge.data) {
1863 x_fprintf(x_stdout, "Error: No lanman-challenge supplied!\n");
1864 } else {
1865 char *error_string = NULL;
1866 uchar lm_key[8];
1867 uchar user_session_key[16];
1868 uint32 flags = 0;
1869
1870 if (full_username && !username) {
1871 fstring fstr_user;
1872 fstring fstr_domain;
1873
1874 if (!parse_ntlm_auth_domain_user(full_username, fstr_user, fstr_domain)) {
1875 /* username might be 'tainted', don't print into our new-line deleimianted stream */
1876 x_fprintf(x_stdout, "Error: Could not parse into domain and username\n");
1877 }
1878 SAFE_FREE(username);
1879 SAFE_FREE(domain);
1880 username = smb_xstrdup(fstr_user);
1881 domain = smb_xstrdup(fstr_domain);
1882 }
1883
1884 if (!domain) {
1885 domain = smb_xstrdup(get_winbind_domain());
1886 }
1887
1888 if (ntlm_server_1_lm_session_key)
1889 flags |= WBFLAG_PAM_LMKEY;
1890
1891 if (ntlm_server_1_user_session_key)
1892 flags |= WBFLAG_PAM_USER_SESSION_KEY;
1893
1894 if (!NT_STATUS_IS_OK(
1895 contact_winbind_auth_crap(username,
1896 domain,
1897 global_myname(),
1898 &challenge,
1899 &lm_response,
1900 &nt_response,
1901 flags,
1902 lm_key,
1903 user_session_key,
1904 &error_string,
1905 NULL))) {
1906
1907 x_fprintf(x_stdout, "Authenticated: No\n");
1908 x_fprintf(x_stdout, "Authentication-Error: %s\n.\n", error_string);
1909 } else {
1910 static char zeros[16];
1911 char *hex_lm_key;
1912 char *hex_user_session_key;
1913
1914 x_fprintf(x_stdout, "Authenticated: Yes\n");
1915
1916 if (ntlm_server_1_lm_session_key
1917 && (memcmp(zeros, lm_key,
1918 sizeof(lm_key)) != 0)) {
1919 hex_lm_key = hex_encode_talloc(NULL,
1920 (const unsigned char *)lm_key,
1921 sizeof(lm_key));
1922 x_fprintf(x_stdout, "LANMAN-Session-Key: %s\n", hex_lm_key);
1923 TALLOC_FREE(hex_lm_key);
1924 }
1925
1926 if (ntlm_server_1_user_session_key
1927 && (memcmp(zeros, user_session_key,
1928 sizeof(user_session_key)) != 0)) {
1929 hex_user_session_key = hex_encode_talloc(NULL,
1930 (const unsigned char *)user_session_key,
1931 sizeof(user_session_key));
1932 x_fprintf(x_stdout, "User-Session-Key: %s\n", hex_user_session_key);
1933 TALLOC_FREE(hex_user_session_key);
1934 }
1935 }
1936 SAFE_FREE(error_string);
1937 }
1938 /* clear out the state */
1939 challenge = data_blob_null;
1940 nt_response = data_blob_null;
1941 lm_response = data_blob_null;
1942 SAFE_FREE(full_username);
1943 SAFE_FREE(username);
1944 SAFE_FREE(domain);
1945 SAFE_FREE(plaintext_password);
1946 ntlm_server_1_user_session_key = False;
1947 ntlm_server_1_lm_session_key = False;
1948 x_fprintf(x_stdout, ".\n");
1949
1950 return;
1951 }
1952
1953 request = buf;
1954
1955 /* Indicates a base64 encoded structure */
1956 parameter = strstr_m(request, ":: ");
1957 if (!parameter) {
1958 parameter = strstr_m(request, ": ");
1959
1960 if (!parameter) {
1961 DEBUG(0, ("Parameter not found!\n"));
1962 x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
1963 return;
1964 }
1965
1966 parameter[0] ='\0';
1967 parameter++;
1968 parameter[0] ='\0';
1969 parameter++;
1970
1971 } else {
1972 parameter[0] ='\0';
1973 parameter++;
1974 parameter[0] ='\0';
1975 parameter++;
1976 parameter[0] ='\0';
1977 parameter++;
1978
1979 base64_decode_inplace(parameter);
1980 }
1981
1982 if (strequal(request, "LANMAN-Challenge")) {
1983 challenge = strhex_to_data_blob(NULL, parameter);
1984 if (challenge.length != 8) {
1985 x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 8)\n.\n",
1986 parameter,
1987 (int)challenge.length);
1988 challenge = data_blob_null;
1989 }
1990 } else if (strequal(request, "NT-Response")) {
1991 nt_response = strhex_to_data_blob(NULL, parameter);
1992 if (nt_response.length < 24) {
1993 x_fprintf(x_stdout, "Error: hex decode of %s failed! (only got %d bytes, needed at least 24)\n.\n",
1994 parameter,
1995 (int)nt_response.length);
1996 nt_response = data_blob_null;
1997 }
1998 } else if (strequal(request, "LANMAN-Response")) {
1999 lm_response = strhex_to_data_blob(NULL, parameter);
2000 if (lm_response.length != 24) {
2001 x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 24)\n.\n",
2002 parameter,
2003 (int)lm_response.length);
2004 lm_response = data_blob_null;
2005 }
2006 } else if (strequal(request, "Password")) {
2007 plaintext_password = smb_xstrdup(parameter);
2008 } else if (strequal(request, "NT-Domain")) {
2009 domain = smb_xstrdup(parameter);
2010 } else if (strequal(request, "Username")) {
2011 username = smb_xstrdup(parameter);
2012 } else if (strequal(request, "Full-Username")) {
2013 full_username = smb_xstrdup(parameter);
2014 } else if (strequal(request, "Request-User-Session-Key")) {
2015 ntlm_server_1_user_session_key = strequal(parameter, "Yes");
2016 } else if (strequal(request, "Request-LanMan-Session-Key")) {
2017 ntlm_server_1_lm_session_key = strequal(parameter, "Yes");
2018 } else {
2019 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
2020 }
2021 }
2022
2023 static void manage_ntlm_change_password_1_request(struct ntlm_auth_state *state,
2024 char *buf, int length)
2025 {
2026 char *request, *parameter;
2027 static DATA_BLOB new_nt_pswd;
2028 static DATA_BLOB old_nt_hash_enc;
2029 static DATA_BLOB new_lm_pswd;
2030 static DATA_BLOB old_lm_hash_enc;
2031 static char *full_username = NULL;
2032 static char *username = NULL;
2033 static char *domain = NULL;
2034 static char *newpswd = NULL;
2035 static char *oldpswd = NULL;
2036
2037 if (strequal(buf, ".")) {
2038 if(newpswd && oldpswd) {
2039 uchar old_nt_hash[16];
2040 uchar old_lm_hash[16];
2041 uchar new_nt_hash[16];
2042 uchar new_lm_hash[16];
2043
2044 new_nt_pswd = data_blob(NULL, 516);
2045 old_nt_hash_enc = data_blob(NULL, 16);
2046
2047 /* Calculate the MD4 hash (NT compatible) of the
2048 * password */
2049 E_md4hash(oldpswd, old_nt_hash);
2050 E_md4hash(newpswd, new_nt_hash);
2051
2052 /* E_deshash returns false for 'long'
2053 passwords (> 14 DOS chars).
2054
2055 Therefore, don't send a buffer
2056 encrypted with the truncated hash
2057 (it could allow an even easier
2058 attack on the password)
2059
2060 Likewise, obey the admin's restriction
2061 */
2062
2063 if (lp_client_lanman_auth() &&
2064 E_deshash(newpswd, new_lm_hash) &&
2065 E_deshash(oldpswd, old_lm_hash)) {
2066 new_lm_pswd = data_blob(NULL, 516);
2067 old_lm_hash_enc = data_blob(NULL, 16);
2068 encode_pw_buffer(new_lm_pswd.data, newpswd,
2069 STR_UNICODE);
2070
2071 arcfour_crypt(new_lm_pswd.data, old_nt_hash, 516);
2072 E_old_pw_hash(new_nt_hash, old_lm_hash,
2073 old_lm_hash_enc.data);
2074 } else {
2075 new_lm_pswd.data = NULL;
2076 new_lm_pswd.length = 0;
2077 old_lm_hash_enc.data = NULL;
2078 old_lm_hash_enc.length = 0;
2079 }
2080
2081 encode_pw_buffer(new_nt_pswd.data, newpswd,
2082 STR_UNICODE);
2083
2084 arcfour_crypt(new_nt_pswd.data, old_nt_hash, 516);
2085 E_old_pw_hash(new_nt_hash, old_nt_hash,
2086 old_nt_hash_enc.data);
2087 }
2088
2089 if (!full_username && !username) {
2090 x_fprintf(x_stdout, "Error: No username supplied!\n");
2091 } else if ((!new_nt_pswd.data || !old_nt_hash_enc.data) &&
2092 (!new_lm_pswd.data || old_lm_hash_enc.data) ) {
2093 x_fprintf(x_stdout, "Error: No NT or LM password "
2094 "blobs supplied!\n");
2095 } else {
2096 char *error_string = NULL;
2097
2098 if (full_username && !username) {
2099 fstring fstr_user;
2100 fstring fstr_domain;
2101
2102 if (!parse_ntlm_auth_domain_user(full_username,
2103 fstr_user,
2104 fstr_domain)) {
2105 /* username might be 'tainted', don't
2106 * print into our new-line
2107 * deleimianted stream */
2108 x_fprintf(x_stdout, "Error: Could not "
2109 "parse into domain and "
2110 "username\n");
2111 SAFE_FREE(username);
2112 username = smb_xstrdup(full_username);
2113 } else {
2114 SAFE_FREE(username);
2115 SAFE_FREE(domain);
2116 username = smb_xstrdup(fstr_user);
2117 domain = smb_xstrdup(fstr_domain);
2118 }
2119
2120 }
2121
2122 if(!NT_STATUS_IS_OK(contact_winbind_change_pswd_auth_crap(
2123 username, domain,
2124 new_nt_pswd,
2125 old_nt_hash_enc,
2126 new_lm_pswd,
2127 old_lm_hash_enc,
2128 &error_string))) {
2129 x_fprintf(x_stdout, "Password-Change: No\n");
2130 x_fprintf(x_stdout, "Password-Change-Error: "
2131 "%s\n.\n", error_string);
2132 } else {
2133 x_fprintf(x_stdout, "Password-Change: Yes\n");
2134 }
2135
2136 SAFE_FREE(error_string);
2137 }
2138 /* clear out the state */
2139 new_nt_pswd = data_blob_null;
2140 old_nt_hash_enc = data_blob_null;
2141 new_lm_pswd = data_blob_null;
2142 old_nt_hash_enc = data_blob_null;
2143 SAFE_FREE(full_username);
2144 SAFE_FREE(username);
2145 SAFE_FREE(domain);
2146 SAFE_FREE(newpswd);
2147 SAFE_FREE(oldpswd);
2148 x_fprintf(x_stdout, ".\n");
2149
2150 return;
2151 }
2152
2153 request = buf;
2154
2155 /* Indicates a base64 encoded structure */
2156 parameter = strstr_m(request, ":: ");
2157 if (!parameter) {
2158 parameter = strstr_m(request, ": ");
2159
2160 if (!parameter) {
2161 DEBUG(0, ("Parameter not found!\n"));
2162 x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
2163 return;
2164 }
2165
2166 parameter[0] ='\0';
2167 parameter++;
2168 parameter[0] ='\0';
2169 parameter++;
2170 } else {
2171 parameter[0] ='\0';
2172 parameter++;
2173 parameter[0] ='\0';
2174 parameter++;
2175 parameter[0] ='\0';
2176 parameter++;
2177
2178 base64_decode_inplace(parameter);
2179 }
2180
2181 if (strequal(request, "new-nt-password-blob")) {
2182 new_nt_pswd = strhex_to_data_blob(NULL, parameter);
2183 if (new_nt_pswd.length != 516) {
2184 x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2185 "(got %d bytes, expected 516)\n.\n",
2186 parameter,
2187 (int)new_nt_pswd.length);
2188 new_nt_pswd = data_blob_null;
2189 }
2190 } else if (strequal(request, "old-nt-hash-blob")) {
2191 old_nt_hash_enc = strhex_to_data_blob(NULL, parameter);
2192 if (old_nt_hash_enc.length != 16) {
2193 x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2194 "(got %d bytes, expected 16)\n.\n",
2195 parameter,
2196 (int)old_nt_hash_enc.length);
2197 old_nt_hash_enc = data_blob_null;
2198 }
2199 } else if (strequal(request, "new-lm-password-blob")) {
2200 new_lm_pswd = strhex_to_data_blob(NULL, parameter);
2201 if (new_lm_pswd.length != 516) {
2202 x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2203 "(got %d bytes, expected 516)\n.\n",
2204 parameter,
2205 (int)new_lm_pswd.length);
2206 new_lm_pswd = data_blob_null;
2207 }
2208 }
2209 else if (strequal(request, "old-lm-hash-blob")) {
2210 old_lm_hash_enc = strhex_to_data_blob(NULL, parameter);
2211 if (old_lm_hash_enc.length != 16)
2212 {
2213 x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2214 "(got %d bytes, expected 16)\n.\n",
2215 parameter,
2216 (int)old_lm_hash_enc.length);
2217 old_lm_hash_enc = data_blob_null;
2218 }
2219 } else if (strequal(request, "nt-domain")) {
2220 domain = smb_xstrdup(parameter);
2221 } else if(strequal(request, "username")) {
2222 username = smb_xstrdup(parameter);
2223 } else if(strequal(request, "full-username")) {
2224 username = smb_xstrdup(parameter);
2225 } else if(strequal(request, "new-password")) {
2226 newpswd = smb_xstrdup(parameter);
2227 } else if (strequal(request, "old-password")) {
2228 oldpswd = smb_xstrdup(parameter);
2229 } else {
2230 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
2231 }
2232 }
2233
2234 static void manage_squid_request(struct ntlm_auth_state *state,
2235 stdio_helper_function fn)
2236 {
2237 char *buf;
2238 char tmp[INITIAL_BUFFER_SIZE+1];
2239 int length, buf_size = 0;
2240 char *c;
2241
2242 buf = talloc_strdup(state->mem_ctx, "");
2243 if (!buf) {
2244 DEBUG(0, ("Failed to allocate input buffer.\n"));
2245 x_fprintf(x_stderr, "ERR\n");
2246 exit(1);
2247 }
2248
2249 do {
2250
2251 /* this is not a typo - x_fgets doesn't work too well under
2252 * squid */
2253 if (fgets(tmp, sizeof(tmp)-1, stdin) == NULL) {
2254 if (ferror(stdin)) {
2255 DEBUG(1, ("fgets() failed! dying..... errno=%d "
2256 "(%s)\n", ferror(stdin),
2257 strerror(ferror(stdin))));
2258
2259 exit(1);
2260 }
2261 exit(0);
2262 }
2263
2264 buf = talloc_strdup_append_buffer(buf, tmp);
2265 buf_size += INITIAL_BUFFER_SIZE;
2266
2267 if (buf_size > MAX_BUFFER_SIZE) {
2268 DEBUG(2, ("Oversized message\n"));
2269 x_fprintf(x_stderr, "ERR\n");
2270 talloc_free(buf);
2271 return;
2272 }
2273
2274 c = strchr(buf, '\n');
2275 } while (c == NULL);
2276
2277 *c = '\0';
2278 length = c-buf;
2279
2280 DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
2281
2282 if (buf[0] == '\0') {
2283 DEBUG(2, ("Invalid Request\n"));
2284 x_fprintf(x_stderr, "ERR\n");
2285 talloc_free(buf);
2286 return;
2287 }
2288
2289 fn(state, buf, length);
2290 talloc_free(buf);
2291 }
2292
2293
2294 static void squid_stream(enum stdio_helper_mode stdio_mode, stdio_helper_function fn) {
2295 TALLOC_CTX *mem_ctx;
2296 struct ntlm_auth_state *state;
2297
2298 /* initialize FDescs */
2299 x_setbuf(x_stdout, NULL);
2300 x_setbuf(x_stderr, NULL);
2301
2302 mem_ctx = talloc_init("ntlm_auth");
2303 if (!mem_ctx) {
2304 DEBUG(0, ("squid_stream: Failed to create talloc context\n"));
2305 x_fprintf(x_stderr, "ERR\n");
2306 exit(1);
2307 }
2308
2309 state = talloc_zero(mem_ctx, struct ntlm_auth_state);
2310 if (!state) {
2311 DEBUG(0, ("squid_stream: Failed to talloc ntlm_auth_state\n"));
2312 x_fprintf(x_stderr, "ERR\n");
2313 exit(1);
2314 }
2315
2316 state->mem_ctx = mem_ctx;
2317 state->helper_mode = stdio_mode;
2318
2319 while(1) {
2320 manage_squid_request(state, fn);
2321 }
2322 }
2323
2324
2325 /* Authenticate a user with a challenge/response */
2326
2327 static bool check_auth_crap(void)
2328 {
2329 NTSTATUS nt_status;
2330 uint32 flags = 0;
2331 char lm_key[8];
2332 char user_session_key[16];
2333 char *hex_lm_key;
2334 char *hex_user_session_key;
2335 char *error_string;
2336 static uint8 zeros[16];
2337
2338 x_setbuf(x_stdout, NULL);
2339
2340 if (request_lm_key)
2341 flags |= WBFLAG_PAM_LMKEY;
2342
2343 if (request_user_session_key)
2344 flags |= WBFLAG_PAM_USER_SESSION_KEY;
2345
2346 flags |= WBFLAG_PAM_NT_STATUS_SQUASH;
2347
2348 nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
2349 opt_workstation,
2350 &opt_challenge,
2351 &opt_lm_response,
2352 &opt_nt_response,
2353 flags,
2354 (unsigned char *)lm_key,
2355 (unsigned char *)user_session_key,
2356 &error_string, NULL);
2357
2358 if (!NT_STATUS_IS_OK(nt_status)) {
2359 x_fprintf(x_stdout, "%s (0x%x)\n",
2360 error_string,
2361 NT_STATUS_V(nt_status));
2362 SAFE_FREE(error_string);
2363 return False;
2364 }
2365
2366 if (request_lm_key
2367 && (memcmp(zeros, lm_key,
2368 sizeof(lm_key)) != 0)) {
2369 hex_lm_key = hex_encode_talloc(talloc_tos(), (const unsigned char *)lm_key,
2370 sizeof(lm_key));
2371 x_fprintf(x_stdout, "LM_KEY: %s\n", hex_lm_key);
2372 TALLOC_FREE(hex_lm_key);
2373 }
2374 if (request_user_session_key
2375 && (memcmp(zeros, user_session_key,
2376 sizeof(user_session_key)) != 0)) {
2377 hex_user_session_key = hex_encode_talloc(talloc_tos(), (const unsigned char *)user_session_key,
2378 sizeof(user_session_key));
2379 x_fprintf(x_stdout, "NT_KEY: %s\n", hex_user_session_key);
2380 TALLOC_FREE(hex_user_session_key);
2381 }
2382
2383 return True;
2384 }
2385
2386 /* Main program */
2387
2388 enum {
2389 OPT_USERNAME = 1000,
2390 OPT_DOMAIN,
2391 OPT_WORKSTATION,
2392 OPT_CHALLENGE,
2393 OPT_RESPONSE,
2394 OPT_LM,
2395 OPT_NT,
2396 OPT_PASSWORD,
2397 OPT_LM_KEY,
2398 OPT_USER_SESSION_KEY,
2399 OPT_DIAGNOSTICS,
2400 OPT_REQUIRE_MEMBERSHIP,
2401 OPT_USE_CACHED_CREDS,
2402 OPT_PAM_WINBIND_CONF
2403 };
2404
2405 int main(int argc, const char **argv)
2406 {
2407 TALLOC_CTX *frame = talloc_stackframe();
2408 int opt;
2409 static const char *helper_protocol;
2410 static int diagnostics;
2411
2412 static const char *hex_challenge;
2413 static const char *hex_lm_response;
2414 static const char *hex_nt_response;
2415
2416 poptContext pc;
2417
2418 /* NOTE: DO NOT change this interface without considering the implications!
2419 This is an external interface, which other programs will use to interact
2420 with this helper.
2421 */
2422
2423 /* We do not use single-letter command abbreviations, because they harm future
2424 interface stability. */
2425
2426 struct poptOption long_options[] = {
2427 POPT_AUTOHELP
2428 { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
2429 { "username", 0, POPT_ARG_STRING, &opt_username, OPT_USERNAME, "username"},
2430 { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
2431 { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
2432 { "challenge", 0, POPT_ARG_STRING, &hex_challenge, OPT_CHALLENGE, "challenge (HEX encoded)"},
2433 { "lm-response", 0, POPT_ARG_STRING, &hex_lm_response, OPT_LM, "LM Response to the challenge (HEX encoded)"},
2434 { "nt-response", 0, POPT_ARG_STRING, &hex_nt_response, OPT_NT, "NT or NTLMv2 Response to the challenge (HEX encoded)"},
2435 { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
2436 { "request-lm-key", 0, POPT_ARG_NONE, &request_lm_key, OPT_LM_KEY, "Retrieve LM session key"},
2437 { "request-nt-key", 0, POPT_ARG_NONE, &request_user_session_key, OPT_USER_SESSION_KEY, "Retrieve User (NT) session key"},
2438 { "use-cached-creds", 0, POPT_ARG_NONE, &use_cached_creds, OPT_USE_CACHED_CREDS, "Use cached credentials if no password is given"},
2439 { "diagnostics", 0, POPT_ARG_NONE, &diagnostics,
2440 OPT_DIAGNOSTICS,
2441 "Perform diagnostics on the authentication chain"},
2442 { "require-membership-of", 0, POPT_ARG_STRING, &require_membership_of, OPT_REQUIRE_MEMBERSHIP, "Require that a user be a member of this group (either name or SID) for authentication to succeed" },
2443 { "pam-winbind-conf", 0, POPT_ARG_STRING, &opt_pam_winbind_conf, OPT_PAM_WINBIND_CONF, "Require that request must set WBFLAG_PAM_CONTACT_TRUSTDOM when krb5 auth is required" },
2444 POPT_COMMON_CONFIGFILE
2445 POPT_COMMON_VERSION
2446 POPT_TABLEEND
2447 };
2448
2449 /* Samba client initialisation */
2450 load_case_tables();
2451
2452 dbf = x_stderr;
2453
2454 /* Parse options */
2455
2456 pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
2457
2458 /* Parse command line options */
2459
2460 if (argc == 1) {
2461 poptPrintHelp(pc, stderr, 0);
2462 return 1;
2463 }
2464
2465 while((opt = poptGetNextOpt(pc)) != -1) {
2466 /* Get generic config options like --configfile */
2467 }
2468
2469 poptFreeContext(pc);
2470
2471 if (!lp_load(get_dyn_CONFIGFILE(), True, False, False, True)) {
2472 d_fprintf(stderr, "ntlm_auth: error opening config file %s. Error was %s\n",
2473 get_dyn_CONFIGFILE(), strerror(errno));
2474 exit(1);
2475 }
2476
2477 pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
2478 POPT_CONTEXT_KEEP_FIRST);
2479
2480 while((opt = poptGetNextOpt(pc)) != -1) {
2481 switch (opt) {
2482 case OPT_CHALLENGE:
2483 opt_challenge = strhex_to_data_blob(NULL, hex_challenge);
2484 if (opt_challenge.length != 8) {
2485 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2486 hex_challenge,
2487 (int)opt_challenge.length);
2488 exit(1);
2489 }
2490 break;
2491 case OPT_LM:
2492 opt_lm_response = strhex_to_data_blob(NULL, hex_lm_response);
2493 if (opt_lm_response.length != 24) {
2494 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2495 hex_lm_response,
2496 (int)opt_lm_response.length);
2497 exit(1);
2498 }
2499 break;
2500
2501 case OPT_NT:
2502 opt_nt_response = strhex_to_data_blob(NULL, hex_nt_response);
2503 if (opt_nt_response.length < 24) {
2504 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2505 hex_nt_response,
2506 (int)opt_nt_response.length);
2507 exit(1);
2508 }
2509 break;
2510
2511 case OPT_REQUIRE_MEMBERSHIP:
2512 if (StrnCaseCmp("S-", require_membership_of, 2) == 0) {
2513 require_membership_of_sid = require_membership_of;
2514 }
2515 break;
2516 }
2517 }
2518
2519 if (opt_username) {
2520 char *domain = SMB_STRDUP(opt_username);
2521 char *p = strchr_m(domain, *lp_winbind_separator());
2522 if (p) {
2523 opt_username = p+1;
2524 *p = '\0';
2525 if (opt_domain && !strequal(opt_domain, domain)) {
2526 x_fprintf(x_stderr, "Domain specified in username (%s) "
2527 "doesn't match specified domain (%s)!\n\n",
2528 domain, opt_domain);
2529 poptPrintHelp(pc, stderr, 0);
2530 exit(1);
2531 }
2532 opt_domain = domain;
2533 } else {
2534 SAFE_FREE(domain);
2535 }
2536 }
2537
2538 /* Note: if opt_domain is "" then send no domain */
2539 if (opt_domain == NULL) {
2540 opt_domain = get_winbind_domain();
2541 }
2542
2543 if (opt_workstation == NULL) {
2544 opt_workstation = "";
2545 }
2546
2547 if (helper_protocol) {
2548 int i;
2549 for (i=0; i<NUM_HELPER_MODES; i++) {
2550 if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
2551 squid_stream(stdio_helper_protocols[i].mode, stdio_helper_protocols[i].fn);
2552 exit(0);
2553 }
2554 }
2555 x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol);
2556
2557 for (i=0; i<NUM_HELPER_MODES; i++) {
2558 x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name);
2559 }
2560
2561 exit(1);
2562 }
2563
2564 if (!opt_username || !*opt_username) {
2565 x_fprintf(x_stderr, "username must be specified!\n\n");
2566 poptPrintHelp(pc, stderr, 0);
2567 exit(1);
2568 }
2569
2570 if (opt_challenge.length) {
2571 if (!check_auth_crap()) {
2572 exit(1);
2573 }
2574 exit(0);
2575 }
2576
2577 if (!opt_password) {
2578 opt_password = getpass("password: ");
2579 }
2580
2581 if (diagnostics) {
2582 if (!diagnose_ntlm_auth()) {
2583 return 1;
2584 }
2585 } else {
2586 fstring user;
2587
2588 fstr_sprintf(user, "%s%c%s", opt_domain, winbind_separator(), opt_username);
2589 if (!check_plaintext_auth(user, opt_password, True)) {
2590 return 1;
2591 }
2592 }
2593
2594 /* Exit code */
2595
2596 poptFreeContext(pc);
2597 TALLOC_FREE(frame);
2598 return 0;
2599 }
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