?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
s3/swat: use strlcat instead of strncat to fix build on old Linux distros
[Samba.git] / source3 / utils / ntlm_auth.c
blobf84f1fd7f55dae6a1b397b044c15786f71f8e7ab
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 "smb_krb5.h"
29
30 #undef DBGC_CLASS
31 #define DBGC_CLASS DBGC_WINBIND
32
33 #define INITIAL_BUFFER_SIZE 300
34 #define MAX_BUFFER_SIZE 630000
35
36 enum stdio_helper_mode {
37 SQUID_2_4_BASIC,
38 SQUID_2_5_BASIC,
39 SQUID_2_5_NTLMSSP,
40 NTLMSSP_CLIENT_1,
41 GSS_SPNEGO,
42 GSS_SPNEGO_CLIENT,
43 NTLM_SERVER_1,
44 NTLM_CHANGE_PASSWORD_1,
45 NUM_HELPER_MODES
46 };
47
48 enum ntlm_auth_cli_state {
49 CLIENT_INITIAL = 0,
50 CLIENT_RESPONSE,
51 CLIENT_FINISHED,
52 CLIENT_ERROR
53 };
54
55 enum ntlm_auth_svr_state {
56 SERVER_INITIAL = 0,
57 SERVER_CHALLENGE,
58 SERVER_FINISHED,
59 SERVER_ERROR
60 };
61
62 struct ntlm_auth_state {
63 TALLOC_CTX *mem_ctx;
64 enum stdio_helper_mode helper_mode;
65 enum ntlm_auth_cli_state cli_state;
66 enum ntlm_auth_svr_state svr_state;
67 struct ntlmssp_state *ntlmssp_state;
68 uint32_t neg_flags;
69 char *want_feature_list;
70 bool have_session_key;
71 DATA_BLOB session_key;
72 DATA_BLOB initial_message;
73 };
74
75 typedef void (*stdio_helper_function)(struct ntlm_auth_state *state, char *buf,
76 int length);
77
78 static void manage_squid_basic_request (struct ntlm_auth_state *state,
79 char *buf, int length);
80
81 static void manage_squid_ntlmssp_request (struct ntlm_auth_state *state,
82 char *buf, int length);
83
84 static void manage_client_ntlmssp_request (struct ntlm_auth_state *state,
85 char *buf, int length);
86
87 static void manage_gss_spnego_request (struct ntlm_auth_state *state,
88 char *buf, int length);
89
90 static void manage_gss_spnego_client_request (struct ntlm_auth_state *state,
91 char *buf, int length);
92
93 static void manage_ntlm_server_1_request (struct ntlm_auth_state *state,
94 char *buf, int length);
95
96 static void manage_ntlm_change_password_1_request(struct ntlm_auth_state *state,
97 char *buf, int length);
98
99 static const struct {
100 enum stdio_helper_mode mode;
101 const char *name;
102 stdio_helper_function fn;
103 } stdio_helper_protocols[] = {
104 { SQUID_2_4_BASIC, "squid-2.4-basic", manage_squid_basic_request},
105 { SQUID_2_5_BASIC, "squid-2.5-basic", manage_squid_basic_request},
106 { SQUID_2_5_NTLMSSP, "squid-2.5-ntlmssp", manage_squid_ntlmssp_request},
107 { NTLMSSP_CLIENT_1, "ntlmssp-client-1", manage_client_ntlmssp_request},
108 { GSS_SPNEGO, "gss-spnego", manage_gss_spnego_request},
109 { GSS_SPNEGO_CLIENT, "gss-spnego-client", manage_gss_spnego_client_request},
110 { NTLM_SERVER_1, "ntlm-server-1", manage_ntlm_server_1_request},
111 { NTLM_CHANGE_PASSWORD_1, "ntlm-change-password-1", manage_ntlm_change_password_1_request},
112 { NUM_HELPER_MODES, NULL, NULL}
113 };
114
115 const char *opt_username;
116 const char *opt_domain;
117 const char *opt_workstation;
118 const char *opt_password;
119 static DATA_BLOB opt_challenge;
120 static DATA_BLOB opt_lm_response;
121 static DATA_BLOB opt_nt_response;
122 static int request_lm_key;
123 static int request_user_session_key;
124 static int use_cached_creds;
125
126 static const char *require_membership_of;
127 static const char *require_membership_of_sid;
128
129 static char winbind_separator(void)
130 {
131 struct winbindd_response response;
132 static bool got_sep;
133 static char sep;
134
135 if (got_sep)
136 return sep;
137
138 ZERO_STRUCT(response);
139
140 /* Send off request */
141
142 if (winbindd_request_response(WINBINDD_INFO, NULL, &response) !=
143 NSS_STATUS_SUCCESS) {
144 d_printf("could not obtain winbind separator!\n");
145 return *lp_winbind_separator();
146 }
147
148 sep = response.data.info.winbind_separator;
149 got_sep = True;
150
151 if (!sep) {
152 d_printf("winbind separator was NULL!\n");
153 return *lp_winbind_separator();
154 }
155
156 return sep;
157 }
158
159 const char *get_winbind_domain(void)
160 {
161 struct winbindd_response response;
162
163 static fstring winbind_domain;
164 if (*winbind_domain) {
165 return winbind_domain;
166 }
167
168 ZERO_STRUCT(response);
169
170 /* Send off request */
171
172 if (winbindd_request_response(WINBINDD_DOMAIN_NAME, NULL, &response) !=
173 NSS_STATUS_SUCCESS) {
174 DEBUG(0, ("could not obtain winbind domain name!\n"));
175 return lp_workgroup();
176 }
177
178 fstrcpy(winbind_domain, response.data.domain_name);
179
180 return winbind_domain;
181
182 }
183
184 const char *get_winbind_netbios_name(void)
185 {
186 struct winbindd_response response;
187
188 static fstring winbind_netbios_name;
189
190 if (*winbind_netbios_name) {
191 return winbind_netbios_name;
192 }
193
194 ZERO_STRUCT(response);
195
196 /* Send off request */
197
198 if (winbindd_request_response(WINBINDD_NETBIOS_NAME, NULL, &response) !=
199 NSS_STATUS_SUCCESS) {
200 DEBUG(0, ("could not obtain winbind netbios name!\n"));
201 return global_myname();
202 }
203
204 fstrcpy(winbind_netbios_name, response.data.netbios_name);
205
206 return winbind_netbios_name;
207
208 }
209
210 DATA_BLOB get_challenge(void)
211 {
212 static DATA_BLOB chal;
213 if (opt_challenge.length)
214 return opt_challenge;
215
216 chal = data_blob(NULL, 8);
217
218 generate_random_buffer(chal.data, chal.length);
219 return chal;
220 }
221
222 /* Copy of parse_domain_user from winbindd_util.c. Parse a string of the
223 form DOMAIN/user into a domain and a user */
224
225 static bool parse_ntlm_auth_domain_user(const char *domuser, fstring domain,
226 fstring user)
227 {
228
229 char *p = strchr(domuser,winbind_separator());
230
231 if (!p) {
232 return False;
233 }
234
235 fstrcpy(user, p+1);
236 fstrcpy(domain, domuser);
237 domain[PTR_DIFF(p, domuser)] = 0;
238 strupper_m(domain);
239
240 return True;
241 }
242
243 static bool get_require_membership_sid(void) {
244 struct winbindd_request request;
245 struct winbindd_response response;
246
247 if (!require_membership_of) {
248 return True;
249 }
250
251 if (require_membership_of_sid) {
252 return True;
253 }
254
255 /* Otherwise, ask winbindd for the name->sid request */
256
257 ZERO_STRUCT(request);
258 ZERO_STRUCT(response);
259
260 if (!parse_ntlm_auth_domain_user(require_membership_of,
261 request.data.name.dom_name,
262 request.data.name.name)) {
263 DEBUG(0, ("Could not parse %s into seperate domain/name parts!\n",
264 require_membership_of));
265 return False;
266 }
267
268 if (winbindd_request_response(WINBINDD_LOOKUPNAME, &request, &response) !=
269 NSS_STATUS_SUCCESS) {
270 DEBUG(0, ("Winbindd lookupname failed to resolve %s into a SID!\n",
271 require_membership_of));
272 return False;
273 }
274
275 require_membership_of_sid = SMB_STRDUP(response.data.sid.sid);
276
277 if (require_membership_of_sid)
278 return True;
279
280 return False;
281 }
282 /* Authenticate a user with a plaintext password */
283
284 static bool check_plaintext_auth(const char *user, const char *pass,
285 bool stdout_diagnostics)
286 {
287 struct winbindd_request request;
288 struct winbindd_response response;
289 NSS_STATUS result;
290
291 if (!get_require_membership_sid()) {
292 return False;
293 }
294
295 /* Send off request */
296
297 ZERO_STRUCT(request);
298 ZERO_STRUCT(response);
299
300 fstrcpy(request.data.auth.user, user);
301 fstrcpy(request.data.auth.pass, pass);
302 if (require_membership_of_sid) {
303 strlcpy(request.data.auth.require_membership_of_sid,
304 require_membership_of_sid,
305 sizeof(request.data.auth.require_membership_of_sid));
306 }
307
308 result = winbindd_request_response(WINBINDD_PAM_AUTH, &request, &response);
309
310 /* Display response */
311
312 if (stdout_diagnostics) {
313 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
314 d_printf("Reading winbind reply failed! (0x01)\n");
315 }
316
317 d_printf("%s: %s (0x%x)\n",
318 response.data.auth.nt_status_string,
319 response.data.auth.error_string,
320 response.data.auth.nt_status);
321 } else {
322 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
323 DEBUG(1, ("Reading winbind reply failed! (0x01)\n"));
324 }
325
326 DEBUG(3, ("%s: %s (0x%x)\n",
327 response.data.auth.nt_status_string,
328 response.data.auth.error_string,
329 response.data.auth.nt_status));
330 }
331
332 return (result == NSS_STATUS_SUCCESS);
333 }
334
335 /* authenticate a user with an encrypted username/password */
336
337 NTSTATUS contact_winbind_auth_crap(const char *username,
338 const char *domain,
339 const char *workstation,
340 const DATA_BLOB *challenge,
341 const DATA_BLOB *lm_response,
342 const DATA_BLOB *nt_response,
343 uint32 flags,
344 uint8 lm_key[8],
345 uint8 user_session_key[16],
346 char **error_string,
347 char **unix_name)
348 {
349 NTSTATUS nt_status;
350 NSS_STATUS result;
351 struct winbindd_request request;
352 struct winbindd_response response;
353
354 if (!get_require_membership_sid()) {
355 return NT_STATUS_INVALID_PARAMETER;
356 }
357
358 ZERO_STRUCT(request);
359 ZERO_STRUCT(response);
360
361 request.flags = flags;
362
363 request.data.auth_crap.logon_parameters = MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT | MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT;
364
365 if (require_membership_of_sid)
366 fstrcpy(request.data.auth_crap.require_membership_of_sid, require_membership_of_sid);
367
368 fstrcpy(request.data.auth_crap.user, username);
369 fstrcpy(request.data.auth_crap.domain, domain);
370
371 fstrcpy(request.data.auth_crap.workstation,
372 workstation);
373
374 memcpy(request.data.auth_crap.chal, challenge->data, MIN(challenge->length, 8));
375
376 if (lm_response && lm_response->length) {
377 memcpy(request.data.auth_crap.lm_resp,
378 lm_response->data,
379 MIN(lm_response->length, sizeof(request.data.auth_crap.lm_resp)));
380 request.data.auth_crap.lm_resp_len = lm_response->length;
381 }
382
383 if (nt_response && nt_response->length) {
384 if (nt_response->length > sizeof(request.data.auth_crap.nt_resp)) {
385 request.flags = request.flags | WBFLAG_BIG_NTLMV2_BLOB;
386 request.extra_len = nt_response->length;
387 request.extra_data.data = SMB_MALLOC_ARRAY(char, request.extra_len);
388 if (request.extra_data.data == NULL) {
389 return NT_STATUS_NO_MEMORY;
390 }
391 memcpy(request.extra_data.data, nt_response->data,
392 nt_response->length);
393
394 } else {
395 memcpy(request.data.auth_crap.nt_resp,
396 nt_response->data, nt_response->length);
397 }
398 request.data.auth_crap.nt_resp_len = nt_response->length;
399 }
400
401 result = winbindd_request_response(WINBINDD_PAM_AUTH_CRAP, &request, &response);
402 SAFE_FREE(request.extra_data.data);
403
404 /* Display response */
405
406 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
407 nt_status = NT_STATUS_UNSUCCESSFUL;
408 if (error_string)
409 *error_string = smb_xstrdup("Reading winbind reply failed!");
410 winbindd_free_response(&response);
411 return nt_status;
412 }
413
414 nt_status = (NT_STATUS(response.data.auth.nt_status));
415 if (!NT_STATUS_IS_OK(nt_status)) {
416 if (error_string)
417 *error_string = smb_xstrdup(response.data.auth.error_string);
418 winbindd_free_response(&response);
419 return nt_status;
420 }
421
422 if ((flags & WBFLAG_PAM_LMKEY) && lm_key) {
423 memcpy(lm_key, response.data.auth.first_8_lm_hash,
424 sizeof(response.data.auth.first_8_lm_hash));
425 }
426 if ((flags & WBFLAG_PAM_USER_SESSION_KEY) && user_session_key) {
427 memcpy(user_session_key, response.data.auth.user_session_key,
428 sizeof(response.data.auth.user_session_key));
429 }
430
431 if (flags & WBFLAG_PAM_UNIX_NAME) {
432 *unix_name = SMB_STRDUP(response.data.auth.unix_username);
433 if (!*unix_name) {
434 winbindd_free_response(&response);
435 return NT_STATUS_NO_MEMORY;
436 }
437 }
438
439 winbindd_free_response(&response);
440 return nt_status;
441 }
442
443 /* contact server to change user password using auth crap */
444 static NTSTATUS contact_winbind_change_pswd_auth_crap(const char *username,
445 const char *domain,
446 const DATA_BLOB new_nt_pswd,
447 const DATA_BLOB old_nt_hash_enc,
448 const DATA_BLOB new_lm_pswd,
449 const DATA_BLOB old_lm_hash_enc,
450 char **error_string)
451 {
452 NTSTATUS nt_status;
453 NSS_STATUS result;
454 struct winbindd_request request;
455 struct winbindd_response response;
456
457 if (!get_require_membership_sid())
458 {
459 if(error_string)
460 *error_string = smb_xstrdup("Can't get membership sid.");
461 return NT_STATUS_INVALID_PARAMETER;
462 }
463
464 ZERO_STRUCT(request);
465 ZERO_STRUCT(response);
466
467 if(username != NULL)
468 fstrcpy(request.data.chng_pswd_auth_crap.user, username);
469 if(domain != NULL)
470 fstrcpy(request.data.chng_pswd_auth_crap.domain,domain);
471
472 if(new_nt_pswd.length)
473 {
474 memcpy(request.data.chng_pswd_auth_crap.new_nt_pswd, new_nt_pswd.data, sizeof(request.data.chng_pswd_auth_crap.new_nt_pswd));
475 request.data.chng_pswd_auth_crap.new_nt_pswd_len = new_nt_pswd.length;
476 }
477
478 if(old_nt_hash_enc.length)
479 {
480 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));
481 request.data.chng_pswd_auth_crap.old_nt_hash_enc_len = old_nt_hash_enc.length;
482 }
483
484 if(new_lm_pswd.length)
485 {
486 memcpy(request.data.chng_pswd_auth_crap.new_lm_pswd, new_lm_pswd.data, sizeof(request.data.chng_pswd_auth_crap.new_lm_pswd));
487 request.data.chng_pswd_auth_crap.new_lm_pswd_len = new_lm_pswd.length;
488 }
489
490 if(old_lm_hash_enc.length)
491 {
492 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));
493 request.data.chng_pswd_auth_crap.old_lm_hash_enc_len = old_lm_hash_enc.length;
494 }
495
496 result = winbindd_request_response(WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, &request, &response);
497
498 /* Display response */
499
500 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0))
501 {
502 nt_status = NT_STATUS_UNSUCCESSFUL;
503 if (error_string)
504 *error_string = smb_xstrdup("Reading winbind reply failed!");
505 winbindd_free_response(&response);
506 return nt_status;
507 }
508
509 nt_status = (NT_STATUS(response.data.auth.nt_status));
510 if (!NT_STATUS_IS_OK(nt_status))
511 {
512 if (error_string)
513 *error_string = smb_xstrdup(response.data.auth.error_string);
514 winbindd_free_response(&response);
515 return nt_status;
516 }
517
518 winbindd_free_response(&response);
519
520 return nt_status;
521 }
522
523 static NTSTATUS winbind_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
524 {
525 static const char zeros[16] = { 0, };
526 NTSTATUS nt_status;
527 char *error_string = NULL;
528 uint8 lm_key[8];
529 uint8 user_sess_key[16];
530 char *unix_name = NULL;
531
532 nt_status = contact_winbind_auth_crap(ntlmssp_state->user, ntlmssp_state->domain,
533 ntlmssp_state->workstation,
534 &ntlmssp_state->chal,
535 &ntlmssp_state->lm_resp,
536 &ntlmssp_state->nt_resp,
537 WBFLAG_PAM_LMKEY | WBFLAG_PAM_USER_SESSION_KEY | WBFLAG_PAM_UNIX_NAME,
538 lm_key, user_sess_key,
539 &error_string, &unix_name);
540
541 if (NT_STATUS_IS_OK(nt_status)) {
542 if (memcmp(lm_key, zeros, 8) != 0) {
543 *lm_session_key = data_blob(NULL, 16);
544 memcpy(lm_session_key->data, lm_key, 8);
545 memset(lm_session_key->data+8, '\0', 8);
546 }
547
548 if (memcmp(user_sess_key, zeros, 16) != 0) {
549 *user_session_key = data_blob(user_sess_key, 16);
550 }
551 ntlmssp_state->auth_context = talloc_strdup(ntlmssp_state,
552 unix_name);
553 } else {
554 DEBUG(NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED) ? 0 : 3,
555 ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
556 ntlmssp_state->domain, ntlmssp_state->user,
557 ntlmssp_state->workstation,
558 error_string ? error_string : "unknown error (NULL)"));
559 ntlmssp_state->auth_context = NULL;
560 }
561
562 SAFE_FREE(error_string);
563 SAFE_FREE(unix_name);
564 return nt_status;
565 }
566
567 static NTSTATUS local_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
568 {
569 NTSTATUS nt_status;
570 uint8 lm_pw[16], nt_pw[16];
571
572 nt_lm_owf_gen (opt_password, nt_pw, lm_pw);
573
574 nt_status = ntlm_password_check(ntlmssp_state,
575 &ntlmssp_state->chal,
576 &ntlmssp_state->lm_resp,
577 &ntlmssp_state->nt_resp,
578 NULL, NULL,
579 ntlmssp_state->user,
580 ntlmssp_state->user,
581 ntlmssp_state->domain,
582 lm_pw, nt_pw, user_session_key, lm_session_key);
583
584 if (NT_STATUS_IS_OK(nt_status)) {
585 ntlmssp_state->auth_context = talloc_asprintf(ntlmssp_state,
586 "%s%c%s", ntlmssp_state->domain,
587 *lp_winbind_separator(),
588 ntlmssp_state->user);
589 } else {
590 DEBUG(3, ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
591 ntlmssp_state->domain, ntlmssp_state->user, ntlmssp_state->workstation,
592 nt_errstr(nt_status)));
593 ntlmssp_state->auth_context = NULL;
594 }
595 return nt_status;
596 }
597
598 static NTSTATUS ntlm_auth_start_ntlmssp_client(NTLMSSP_STATE **client_ntlmssp_state)
599 {
600 NTSTATUS status;
601 if ( (opt_username == NULL) || (opt_domain == NULL) ) {
602 status = NT_STATUS_UNSUCCESSFUL;
603 DEBUG(1, ("Need username and domain for NTLMSSP\n"));
604 return NT_STATUS_INVALID_PARAMETER;
605 }
606
607 status = ntlmssp_client_start(client_ntlmssp_state);
608
609 if (!NT_STATUS_IS_OK(status)) {
610 DEBUG(1, ("Could not start NTLMSSP client: %s\n",
611 nt_errstr(status)));
612 ntlmssp_end(client_ntlmssp_state);
613 return status;
614 }
615
616 status = ntlmssp_set_username(*client_ntlmssp_state, opt_username);
617
618 if (!NT_STATUS_IS_OK(status)) {
619 DEBUG(1, ("Could not set username: %s\n",
620 nt_errstr(status)));
621 ntlmssp_end(client_ntlmssp_state);
622 return status;
623 }
624
625 status = ntlmssp_set_domain(*client_ntlmssp_state, opt_domain);
626
627 if (!NT_STATUS_IS_OK(status)) {
628 DEBUG(1, ("Could not set domain: %s\n",
629 nt_errstr(status)));
630 ntlmssp_end(client_ntlmssp_state);
631 return status;
632 }
633
634 if (opt_password) {
635 status = ntlmssp_set_password(*client_ntlmssp_state, opt_password);
636
637 if (!NT_STATUS_IS_OK(status)) {
638 DEBUG(1, ("Could not set password: %s\n",
639 nt_errstr(status)));
640 ntlmssp_end(client_ntlmssp_state);
641 return status;
642 }
643 }
644
645 return NT_STATUS_OK;
646 }
647
648 static NTSTATUS ntlm_auth_start_ntlmssp_server(NTLMSSP_STATE **ntlmssp_state)
649 {
650 NTSTATUS status = ntlmssp_server_start(ntlmssp_state);
651
652 if (!NT_STATUS_IS_OK(status)) {
653 DEBUG(1, ("Could not start NTLMSSP server: %s\n",
654 nt_errstr(status)));
655 return status;
656 }
657
658 /* Have we been given a local password, or should we ask winbind? */
659 if (opt_password) {
660 (*ntlmssp_state)->check_password = local_pw_check;
661 (*ntlmssp_state)->get_domain = lp_workgroup;
662 (*ntlmssp_state)->get_global_myname = global_myname;
663 } else {
664 (*ntlmssp_state)->check_password = winbind_pw_check;
665 (*ntlmssp_state)->get_domain = get_winbind_domain;
666 (*ntlmssp_state)->get_global_myname = get_winbind_netbios_name;
667 }
668 return NT_STATUS_OK;
669 }
670
671 /*******************************************************************
672 Used by firefox to drive NTLM auth to IIS servers.
673 *******************************************************************/
674
675 static NTSTATUS do_ccache_ntlm_auth(DATA_BLOB initial_msg, DATA_BLOB challenge_msg,
676 DATA_BLOB *reply)
677 {
678 struct winbindd_request wb_request;
679 struct winbindd_response wb_response;
680 NSS_STATUS result;
681
682 /* get winbindd to do the ntlmssp step on our behalf */
683 ZERO_STRUCT(wb_request);
684 ZERO_STRUCT(wb_response);
685
686 fstr_sprintf(wb_request.data.ccache_ntlm_auth.user,
687 "%s%c%s", opt_domain, winbind_separator(), opt_username);
688 wb_request.data.ccache_ntlm_auth.uid = geteuid();
689 wb_request.data.ccache_ntlm_auth.initial_blob_len = initial_msg.length;
690 wb_request.data.ccache_ntlm_auth.challenge_blob_len = challenge_msg.length;
691 wb_request.extra_len = initial_msg.length + challenge_msg.length;
692
693 if (wb_request.extra_len > 0) {
694 wb_request.extra_data.data = SMB_MALLOC_ARRAY(char, wb_request.extra_len);
695 if (wb_request.extra_data.data == NULL) {
696 return NT_STATUS_NO_MEMORY;
697 }
698
699 memcpy(wb_request.extra_data.data, initial_msg.data, initial_msg.length);
700 memcpy(wb_request.extra_data.data + initial_msg.length,
701 challenge_msg.data, challenge_msg.length);
702 }
703
704 result = winbindd_request_response(WINBINDD_CCACHE_NTLMAUTH, &wb_request, &wb_response);
705 SAFE_FREE(wb_request.extra_data.data);
706
707 if (result != NSS_STATUS_SUCCESS) {
708 winbindd_free_response(&wb_response);
709 return NT_STATUS_UNSUCCESSFUL;
710 }
711
712 if (reply) {
713 *reply = data_blob(wb_response.extra_data.data,
714 wb_response.data.ccache_ntlm_auth.auth_blob_len);
715 if (wb_response.data.ccache_ntlm_auth.auth_blob_len > 0 &&
716 reply->data == NULL) {
717 winbindd_free_response(&wb_response);
718 return NT_STATUS_NO_MEMORY;
719 }
720 }
721
722 winbindd_free_response(&wb_response);
723 return NT_STATUS_MORE_PROCESSING_REQUIRED;
724 }
725
726 static void manage_squid_ntlmssp_request(struct ntlm_auth_state *state,
727 char *buf, int length)
728 {
729 DATA_BLOB request, reply;
730 NTSTATUS nt_status;
731
732 if (strlen(buf) < 2) {
733 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
734 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
735 return;
736 }
737
738 if (strlen(buf) > 3) {
739 if(strncmp(buf, "SF ", 3) == 0){
740 DEBUG(10, ("Setting flags to negotioate\n"));
741 TALLOC_FREE(state->want_feature_list);
742 state->want_feature_list = talloc_strdup(state->mem_ctx,
743 buf+3);
744 x_fprintf(x_stdout, "OK\n");
745 return;
746 }
747 request = base64_decode_data_blob(buf + 3);
748 } else {
749 request = data_blob_null;
750 }
751
752 if ((strncmp(buf, "PW ", 3) == 0)) {
753 /* The calling application wants us to use a local password
754 * (rather than winbindd) */
755
756 opt_password = SMB_STRNDUP((const char *)request.data,
757 request.length);
758
759 if (opt_password == NULL) {
760 DEBUG(1, ("Out of memory\n"));
761 x_fprintf(x_stdout, "BH Out of memory\n");
762 data_blob_free(&request);
763 return;
764 }
765
766 x_fprintf(x_stdout, "OK\n");
767 data_blob_free(&request);
768 return;
769 }
770
771 if (strncmp(buf, "YR", 2) == 0) {
772 if (state->ntlmssp_state)
773 ntlmssp_end(&state->ntlmssp_state);
774 state->svr_state = SERVER_INITIAL;
775 } else if (strncmp(buf, "KK", 2) == 0) {
776 /* No special preprocessing required */
777 } else if (strncmp(buf, "GF", 2) == 0) {
778 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
779
780 if (state->svr_state == SERVER_FINISHED) {
781 x_fprintf(x_stdout, "GF 0x%08x\n", state->neg_flags);
782 }
783 else {
784 x_fprintf(x_stdout, "BH\n");
785 }
786 data_blob_free(&request);
787 return;
788 } else if (strncmp(buf, "GK", 2) == 0) {
789 DEBUG(10, ("Requested NTLMSSP session key\n"));
790 if(state->have_session_key) {
791 char *key64 = base64_encode_data_blob(state->mem_ctx,
792 state->session_key);
793 x_fprintf(x_stdout, "GK %s\n", key64?key64:"<NULL>");
794 TALLOC_FREE(key64);
795 } else {
796 x_fprintf(x_stdout, "BH\n");
797 }
798
799 data_blob_free(&request);
800 return;
801 } else {
802 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
803 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
804 return;
805 }
806
807 if (!state->ntlmssp_state) {
808 nt_status = ntlm_auth_start_ntlmssp_server(
809 &state->ntlmssp_state);
810 if (!NT_STATUS_IS_OK(nt_status)) {
811 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
812 return;
813 }
814 ntlmssp_want_feature_list(state->ntlmssp_state,
815 state->want_feature_list);
816 }
817
818 DEBUG(10, ("got NTLMSSP packet:\n"));
819 dump_data(10, request.data, request.length);
820
821 nt_status = ntlmssp_update(state->ntlmssp_state, request, &reply);
822
823 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
824 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
825 reply);
826 x_fprintf(x_stdout, "TT %s\n", reply_base64);
827 TALLOC_FREE(reply_base64);
828 data_blob_free(&reply);
829 state->svr_state = SERVER_CHALLENGE;
830 DEBUG(10, ("NTLMSSP challenge\n"));
831 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
832 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
833 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
834
835 ntlmssp_end(&state->ntlmssp_state);
836 } else if (!NT_STATUS_IS_OK(nt_status)) {
837 x_fprintf(x_stdout, "NA %s\n", nt_errstr(nt_status));
838 DEBUG(10, ("NTLMSSP %s\n", nt_errstr(nt_status)));
839 } else {
840 x_fprintf(x_stdout, "AF %s\n",
841 (char *)state->ntlmssp_state->auth_context);
842 DEBUG(10, ("NTLMSSP OK!\n"));
843
844 if(state->have_session_key)
845 data_blob_free(&state->session_key);
846 state->session_key = data_blob(
847 state->ntlmssp_state->session_key.data,
848 state->ntlmssp_state->session_key.length);
849 state->neg_flags = state->ntlmssp_state->neg_flags;
850 state->have_session_key = true;
851 state->svr_state = SERVER_FINISHED;
852 }
853
854 data_blob_free(&request);
855 }
856
857 static void manage_client_ntlmssp_request(struct ntlm_auth_state *state,
858 char *buf, int length)
859 {
860 DATA_BLOB request, reply;
861 NTSTATUS nt_status;
862
863 if (!opt_username || !*opt_username) {
864 x_fprintf(x_stderr, "username must be specified!\n\n");
865 exit(1);
866 }
867
868 if (strlen(buf) < 2) {
869 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
870 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
871 return;
872 }
873
874 if (strlen(buf) > 3) {
875 if(strncmp(buf, "SF ", 3) == 0) {
876 DEBUG(10, ("Looking for flags to negotiate\n"));
877 talloc_free(state->want_feature_list);
878 state->want_feature_list = talloc_strdup(state->mem_ctx,
879 buf+3);
880 x_fprintf(x_stdout, "OK\n");
881 return;
882 }
883 request = base64_decode_data_blob(buf + 3);
884 } else {
885 request = data_blob_null;
886 }
887
888 if (strncmp(buf, "PW ", 3) == 0) {
889 /* We asked for a password and obviously got it :-) */
890
891 opt_password = SMB_STRNDUP((const char *)request.data,
892 request.length);
893
894 if (opt_password == NULL) {
895 DEBUG(1, ("Out of memory\n"));
896 x_fprintf(x_stdout, "BH Out of memory\n");
897 data_blob_free(&request);
898 return;
899 }
900
901 x_fprintf(x_stdout, "OK\n");
902 data_blob_free(&request);
903 return;
904 }
905
906 if (!state->ntlmssp_state && use_cached_creds) {
907 /* check whether cached credentials are usable. */
908 DATA_BLOB empty_blob = data_blob_null;
909
910 nt_status = do_ccache_ntlm_auth(empty_blob, empty_blob, NULL);
911 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
912 /* failed to use cached creds */
913 use_cached_creds = False;
914 }
915 }
916
917 if (opt_password == NULL && !use_cached_creds) {
918 /* Request a password from the calling process. After
919 sending it, the calling process should retry asking for the
920 negotiate. */
921
922 DEBUG(10, ("Requesting password\n"));
923 x_fprintf(x_stdout, "PW\n");
924 return;
925 }
926
927 if (strncmp(buf, "YR", 2) == 0) {
928 if (state->ntlmssp_state)
929 ntlmssp_end(&state->ntlmssp_state);
930 state->cli_state = CLIENT_INITIAL;
931 } else if (strncmp(buf, "TT", 2) == 0) {
932 /* No special preprocessing required */
933 } else if (strncmp(buf, "GF", 2) == 0) {
934 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
935
936 if(state->cli_state == CLIENT_FINISHED) {
937 x_fprintf(x_stdout, "GF 0x%08x\n", state->neg_flags);
938 }
939 else {
940 x_fprintf(x_stdout, "BH\n");
941 }
942
943 data_blob_free(&request);
944 return;
945 } else if (strncmp(buf, "GK", 2) == 0 ) {
946 DEBUG(10, ("Requested session key\n"));
947
948 if(state->cli_state == CLIENT_FINISHED) {
949 char *key64 = base64_encode_data_blob(state->mem_ctx,
950 state->session_key);
951 x_fprintf(x_stdout, "GK %s\n", key64?key64:"<NULL>");
952 TALLOC_FREE(key64);
953 }
954 else {
955 x_fprintf(x_stdout, "BH\n");
956 }
957
958 data_blob_free(&request);
959 return;
960 } else {
961 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
962 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
963 return;
964 }
965
966 if (!state->ntlmssp_state) {
967 nt_status = ntlm_auth_start_ntlmssp_client(
968 &state->ntlmssp_state);
969 if (!NT_STATUS_IS_OK(nt_status)) {
970 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
971 return;
972 }
973 ntlmssp_want_feature_list(state->ntlmssp_state,
974 state->want_feature_list);
975 state->initial_message = data_blob_null;
976 }
977
978 DEBUG(10, ("got NTLMSSP packet:\n"));
979 dump_data(10, request.data, request.length);
980
981 if (use_cached_creds && !opt_password &&
982 (state->cli_state == CLIENT_RESPONSE)) {
983 nt_status = do_ccache_ntlm_auth(state->initial_message, request,
984 &reply);
985 } else {
986 nt_status = ntlmssp_update(state->ntlmssp_state, request,
987 &reply);
988 }
989
990 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
991 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
992 reply);
993 if (state->cli_state == CLIENT_INITIAL) {
994 x_fprintf(x_stdout, "YR %s\n", reply_base64);
995 state->initial_message = reply;
996 state->cli_state = CLIENT_RESPONSE;
997 } else {
998 x_fprintf(x_stdout, "KK %s\n", reply_base64);
999 data_blob_free(&reply);
1000 }
1001 TALLOC_FREE(reply_base64);
1002 DEBUG(10, ("NTLMSSP challenge\n"));
1003 } else if (NT_STATUS_IS_OK(nt_status)) {
1004 char *reply_base64 = base64_encode_data_blob(talloc_tos(),
1005 reply);
1006 x_fprintf(x_stdout, "AF %s\n", reply_base64);
1007 TALLOC_FREE(reply_base64);
1008
1009 if(state->have_session_key)
1010 data_blob_free(&state->session_key);
1011
1012 state->session_key = data_blob(
1013 state->ntlmssp_state->session_key.data,
1014 state->ntlmssp_state->session_key.length);
1015 state->neg_flags = state->ntlmssp_state->neg_flags;
1016 state->have_session_key = true;
1017
1018 DEBUG(10, ("NTLMSSP OK!\n"));
1019 state->cli_state = CLIENT_FINISHED;
1020 if (state->ntlmssp_state)
1021 ntlmssp_end(&state->ntlmssp_state);
1022 } else {
1023 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
1024 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
1025 state->cli_state = CLIENT_ERROR;
1026 if (state->ntlmssp_state)
1027 ntlmssp_end(&state->ntlmssp_state);
1028 }
1029
1030 data_blob_free(&request);
1031 }
1032
1033 static void manage_squid_basic_request(struct ntlm_auth_state *state,
1034 char *buf, int length)
1035 {
1036 char *user, *pass;
1037 user=buf;
1038
1039 pass=(char *)memchr(buf,' ',length);
1040 if (!pass) {
1041 DEBUG(2, ("Password not found. Denying access\n"));
1042 x_fprintf(x_stdout, "ERR\n");
1043 return;
1044 }
1045 *pass='\0';
1046 pass++;
1047
1048 if (state->helper_mode == SQUID_2_5_BASIC) {
1049 rfc1738_unescape(user);
1050 rfc1738_unescape(pass);
1051 }
1052
1053 if (check_plaintext_auth(user, pass, False)) {
1054 x_fprintf(x_stdout, "OK\n");
1055 } else {
1056 x_fprintf(x_stdout, "ERR\n");
1057 }
1058 }
1059
1060 static void offer_gss_spnego_mechs(void) {
1061
1062 DATA_BLOB token;
1063 SPNEGO_DATA spnego;
1064 ssize_t len;
1065 char *reply_base64;
1066 TALLOC_CTX *ctx = talloc_tos();
1067 char *principal;
1068 char *myname_lower;
1069
1070 ZERO_STRUCT(spnego);
1071
1072 myname_lower = talloc_strdup(ctx, global_myname());
1073 if (!myname_lower) {
1074 return;
1075 }
1076 strlower_m(myname_lower);
1077
1078 principal = talloc_asprintf(ctx, "%s$@%s", myname_lower, lp_realm());
1079 if (!principal) {
1080 return;
1081 }
1082
1083 /* Server negTokenInit (mech offerings) */
1084 spnego.type = SPNEGO_NEG_TOKEN_INIT;
1085 spnego.negTokenInit.mechTypes = talloc_array(ctx, const char *, 2);
1086 #ifdef HAVE_KRB5
1087 spnego.negTokenInit.mechTypes[0] = talloc_strdup(ctx, OID_KERBEROS5_OLD);
1088 spnego.negTokenInit.mechTypes[1] = talloc_strdup(ctx, OID_NTLMSSP);
1089 spnego.negTokenInit.mechTypes[2] = NULL;
1090 #else
1091 spnego.negTokenInit.mechTypes[0] = talloc_strdup(ctx, OID_NTLMSSP);
1092 spnego.negTokenInit.mechTypes[1] = NULL;
1093 #endif
1094
1095
1096 spnego.negTokenInit.mechListMIC = data_blob_talloc(ctx, principal,
1097 strlen(principal));
1098
1099 len = write_spnego_data(&token, &spnego);
1100 free_spnego_data(&spnego);
1101
1102 if (len == -1) {
1103 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1104 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1105 return;
1106 }
1107
1108 reply_base64 = base64_encode_data_blob(talloc_tos(), token);
1109 x_fprintf(x_stdout, "TT %s *\n", reply_base64);
1110
1111 TALLOC_FREE(reply_base64);
1112 data_blob_free(&token);
1113 DEBUG(10, ("sent SPNEGO negTokenInit\n"));
1114 return;
1115 }
1116
1117 static void manage_gss_spnego_request(struct ntlm_auth_state *state,
1118 char *buf, int length)
1119 {
1120 static NTLMSSP_STATE *ntlmssp_state = NULL;
1121 SPNEGO_DATA request, response;
1122 DATA_BLOB token;
1123 NTSTATUS status;
1124 ssize_t len;
1125 TALLOC_CTX *ctx = talloc_tos();
1126
1127 char *user = NULL;
1128 char *domain = NULL;
1129
1130 const char *reply_code;
1131 char *reply_base64;
1132 char *reply_argument = NULL;
1133
1134 if (strlen(buf) < 2) {
1135 DEBUG(1, ("SPENGO query [%s] invalid", buf));
1136 x_fprintf(x_stdout, "BH SPENGO query invalid\n");
1137 return;
1138 }
1139
1140 if (strncmp(buf, "YR", 2) == 0) {
1141 if (ntlmssp_state)
1142 ntlmssp_end(&ntlmssp_state);
1143 } else if (strncmp(buf, "KK", 2) == 0) {
1144 ;
1145 } else {
1146 DEBUG(1, ("SPENGO query [%s] invalid", buf));
1147 x_fprintf(x_stdout, "BH SPENGO query invalid\n");
1148 return;
1149 }
1150
1151 if ( (strlen(buf) == 2)) {
1152
1153 /* no client data, get the negTokenInit offering
1154 mechanisms */
1155
1156 offer_gss_spnego_mechs();
1157 return;
1158 }
1159
1160 /* All subsequent requests have a blob. This might be negTokenInit or negTokenTarg */
1161
1162 if (strlen(buf) <= 3) {
1163 DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
1164 x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
1165 return;
1166 }
1167
1168 token = base64_decode_data_blob(buf + 3);
1169 len = read_spnego_data(talloc_tos(), token, &request);
1170 data_blob_free(&token);
1171
1172 if (len == -1) {
1173 DEBUG(1, ("GSS-SPNEGO query [%s] invalid", buf));
1174 x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
1175 return;
1176 }
1177
1178 if (request.type == SPNEGO_NEG_TOKEN_INIT) {
1179
1180 /* Second request from Client. This is where the
1181 client offers its mechanism to use. */
1182
1183 if ( (request.negTokenInit.mechTypes == NULL) ||
1184 (request.negTokenInit.mechTypes[0] == NULL) ) {
1185 DEBUG(1, ("Client did not offer any mechanism"));
1186 x_fprintf(x_stdout, "BH Client did not offer any "
1187 "mechanism\n");
1188 return;
1189 }
1190
1191 status = NT_STATUS_UNSUCCESSFUL;
1192 if (strcmp(request.negTokenInit.mechTypes[0], OID_NTLMSSP) == 0) {
1193
1194 if ( request.negTokenInit.mechToken.data == NULL ) {
1195 DEBUG(1, ("Client did not provide NTLMSSP data\n"));
1196 x_fprintf(x_stdout, "BH Client did not provide "
1197 "NTLMSSP data\n");
1198 return;
1199 }
1200
1201 if ( ntlmssp_state != NULL ) {
1202 DEBUG(1, ("Client wants a new NTLMSSP challenge, but "
1203 "already got one\n"));
1204 x_fprintf(x_stdout, "BH Client wants a new "
1205 "NTLMSSP challenge, but "
1206 "already got one\n");
1207 ntlmssp_end(&ntlmssp_state);
1208 return;
1209 }
1210
1211 if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
1212 x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1213 return;
1214 }
1215
1216 DEBUG(10, ("got NTLMSSP packet:\n"));
1217 dump_data(10, request.negTokenInit.mechToken.data,
1218 request.negTokenInit.mechToken.length);
1219
1220 response.type = SPNEGO_NEG_TOKEN_TARG;
1221 response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_NTLMSSP);
1222 response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1223
1224 status = ntlmssp_update(ntlmssp_state,
1225 request.negTokenInit.mechToken,
1226 &response.negTokenTarg.responseToken);
1227 }
1228
1229 #ifdef HAVE_KRB5
1230 if (strcmp(request.negTokenInit.mechTypes[0], OID_KERBEROS5_OLD) == 0) {
1231
1232 TALLOC_CTX *mem_ctx = talloc_init("manage_gss_spnego_request");
1233 char *principal;
1234 DATA_BLOB ap_rep;
1235 DATA_BLOB session_key;
1236 struct PAC_DATA *pac_data = NULL;
1237
1238 if ( request.negTokenInit.mechToken.data == NULL ) {
1239 DEBUG(1, ("Client did not provide Kerberos data\n"));
1240 x_fprintf(x_stdout, "BH Client did not provide "
1241 "Kerberos data\n");
1242 return;
1243 }
1244
1245 response.type = SPNEGO_NEG_TOKEN_TARG;
1246 response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_KERBEROS5_OLD);
1247 response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1248 response.negTokenTarg.responseToken = data_blob_talloc(ctx, NULL, 0);
1249
1250 status = ads_verify_ticket(mem_ctx, lp_realm(), 0,
1251 &request.negTokenInit.mechToken,
1252 &principal, &pac_data, &ap_rep,
1253 &session_key, True);
1254
1255 /* Now in "principal" we have the name we are
1256 authenticated as. */
1257
1258 if (NT_STATUS_IS_OK(status)) {
1259
1260 domain = strchr_m(principal, '@');
1261
1262 if (domain == NULL) {
1263 DEBUG(1, ("Did not get a valid principal "
1264 "from ads_verify_ticket\n"));
1265 x_fprintf(x_stdout, "BH Did not get a "
1266 "valid principal from "
1267 "ads_verify_ticket\n");
1268 return;
1269 }
1270
1271 *domain++ = '\0';
1272 domain = SMB_STRDUP(domain);
1273 user = SMB_STRDUP(principal);
1274
1275 data_blob_free(&ap_rep);
1276 }
1277
1278 TALLOC_FREE(mem_ctx);
1279 }
1280 #endif
1281
1282 } else {
1283
1284 if ( (request.negTokenTarg.supportedMech == NULL) ||
1285 ( strcmp(request.negTokenTarg.supportedMech, OID_NTLMSSP) != 0 ) ) {
1286 /* Kerberos should never send a negTokenTarg, OID_NTLMSSP
1287 is the only one we support that sends this stuff */
1288 DEBUG(1, ("Got a negTokenTarg for something non-NTLMSSP: %s\n",
1289 request.negTokenTarg.supportedMech));
1290 x_fprintf(x_stdout, "BH Got a negTokenTarg for "
1291 "something non-NTLMSSP\n");
1292 return;
1293 }
1294
1295 if (request.negTokenTarg.responseToken.data == NULL) {
1296 DEBUG(1, ("Got a negTokenTarg without a responseToken!\n"));
1297 x_fprintf(x_stdout, "BH Got a negTokenTarg without a "
1298 "responseToken!\n");
1299 return;
1300 }
1301
1302 status = ntlmssp_update(ntlmssp_state,
1303 request.negTokenTarg.responseToken,
1304 &response.negTokenTarg.responseToken);
1305
1306 response.type = SPNEGO_NEG_TOKEN_TARG;
1307 response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_NTLMSSP);
1308 response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1309
1310 if (NT_STATUS_IS_OK(status)) {
1311 user = SMB_STRDUP(ntlmssp_state->user);
1312 domain = SMB_STRDUP(ntlmssp_state->domain);
1313 ntlmssp_end(&ntlmssp_state);
1314 }
1315 }
1316
1317 free_spnego_data(&request);
1318
1319 if (NT_STATUS_IS_OK(status)) {
1320 response.negTokenTarg.negResult = SPNEGO_ACCEPT_COMPLETED;
1321 reply_code = "AF";
1322 reply_argument = talloc_asprintf(ctx, "%s\\%s", domain, user);
1323 } else if (NT_STATUS_EQUAL(status,
1324 NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1325 response.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1326 reply_code = "TT";
1327 reply_argument = talloc_strdup(ctx, "*");
1328 } else {
1329 response.negTokenTarg.negResult = SPNEGO_REJECT;
1330 reply_code = "NA";
1331 reply_argument = talloc_strdup(ctx, nt_errstr(status));
1332 }
1333
1334 if (!reply_argument) {
1335 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1336 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1337 return;
1338 }
1339
1340 SAFE_FREE(user);
1341 SAFE_FREE(domain);
1342
1343 len = write_spnego_data(&token, &response);
1344 free_spnego_data(&response);
1345
1346 if (len == -1) {
1347 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1348 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1349 return;
1350 }
1351
1352 reply_base64 = base64_encode_data_blob(talloc_tos(), token);
1353
1354 x_fprintf(x_stdout, "%s %s %s\n",
1355 reply_code, reply_base64, reply_argument);
1356
1357 TALLOC_FREE(reply_base64);
1358 data_blob_free(&token);
1359
1360 return;
1361 }
1362
1363 static NTLMSSP_STATE *client_ntlmssp_state = NULL;
1364
1365 static bool manage_client_ntlmssp_init(SPNEGO_DATA spnego)
1366 {
1367 NTSTATUS status;
1368 DATA_BLOB null_blob = data_blob_null;
1369 DATA_BLOB to_server;
1370 char *to_server_base64;
1371 const char *my_mechs[] = {OID_NTLMSSP, NULL};
1372
1373 DEBUG(10, ("Got spnego negTokenInit with NTLMSSP\n"));
1374
1375 if (client_ntlmssp_state != NULL) {
1376 DEBUG(1, ("Request for initial SPNEGO request where "
1377 "we already have a state\n"));
1378 return False;
1379 }
1380
1381 if (!client_ntlmssp_state) {
1382 if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_client(&client_ntlmssp_state))) {
1383 x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1384 return False;
1385 }
1386 }
1387
1388
1389 if (opt_password == NULL) {
1390
1391 /* Request a password from the calling process. After
1392 sending it, the calling process should retry with
1393 the negTokenInit. */
1394
1395 DEBUG(10, ("Requesting password\n"));
1396 x_fprintf(x_stdout, "PW\n");
1397 return True;
1398 }
1399
1400 spnego.type = SPNEGO_NEG_TOKEN_INIT;
1401 spnego.negTokenInit.mechTypes = my_mechs;
1402 spnego.negTokenInit.reqFlags = 0;
1403 spnego.negTokenInit.mechListMIC = null_blob;
1404
1405 status = ntlmssp_update(client_ntlmssp_state, null_blob,
1406 &spnego.negTokenInit.mechToken);
1407
1408 if ( !(NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) ||
1409 NT_STATUS_IS_OK(status)) ) {
1410 DEBUG(1, ("Expected OK or MORE_PROCESSING_REQUIRED, got: %s\n",
1411 nt_errstr(status)));
1412 ntlmssp_end(&client_ntlmssp_state);
1413 return False;
1414 }
1415
1416 write_spnego_data(&to_server, &spnego);
1417 data_blob_free(&spnego.negTokenInit.mechToken);
1418
1419 to_server_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1420 data_blob_free(&to_server);
1421 x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1422 TALLOC_FREE(to_server_base64);
1423 return True;
1424 }
1425
1426 static void manage_client_ntlmssp_targ(SPNEGO_DATA spnego)
1427 {
1428 NTSTATUS status;
1429 DATA_BLOB null_blob = data_blob_null;
1430 DATA_BLOB request;
1431 DATA_BLOB to_server;
1432 char *to_server_base64;
1433
1434 DEBUG(10, ("Got spnego negTokenTarg with NTLMSSP\n"));
1435
1436 if (client_ntlmssp_state == NULL) {
1437 DEBUG(1, ("Got NTLMSSP tArg without a client state\n"));
1438 x_fprintf(x_stdout, "BH Got NTLMSSP tArg without a client state\n");
1439 return;
1440 }
1441
1442 if (spnego.negTokenTarg.negResult == SPNEGO_REJECT) {
1443 x_fprintf(x_stdout, "NA\n");
1444 ntlmssp_end(&client_ntlmssp_state);
1445 return;
1446 }
1447
1448 if (spnego.negTokenTarg.negResult == SPNEGO_ACCEPT_COMPLETED) {
1449 x_fprintf(x_stdout, "AF\n");
1450 ntlmssp_end(&client_ntlmssp_state);
1451 return;
1452 }
1453
1454 status = ntlmssp_update(client_ntlmssp_state,
1455 spnego.negTokenTarg.responseToken,
1456 &request);
1457
1458 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1459 DEBUG(1, ("Expected MORE_PROCESSING_REQUIRED from "
1460 "ntlmssp_client_update, got: %s\n",
1461 nt_errstr(status)));
1462 x_fprintf(x_stdout, "BH Expected MORE_PROCESSING_REQUIRED from "
1463 "ntlmssp_client_update\n");
1464 data_blob_free(&request);
1465 ntlmssp_end(&client_ntlmssp_state);
1466 return;
1467 }
1468
1469 spnego.type = SPNEGO_NEG_TOKEN_TARG;
1470 spnego.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1471 spnego.negTokenTarg.supportedMech = (char *)OID_NTLMSSP;
1472 spnego.negTokenTarg.responseToken = request;
1473 spnego.negTokenTarg.mechListMIC = null_blob;
1474
1475 write_spnego_data(&to_server, &spnego);
1476 data_blob_free(&request);
1477
1478 to_server_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1479 data_blob_free(&to_server);
1480 x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1481 TALLOC_FREE(to_server_base64);
1482 return;
1483 }
1484
1485 #ifdef HAVE_KRB5
1486
1487 static bool manage_client_krb5_init(SPNEGO_DATA spnego)
1488 {
1489 char *principal;
1490 DATA_BLOB tkt, to_server;
1491 DATA_BLOB session_key_krb5 = data_blob_null;
1492 SPNEGO_DATA reply;
1493 char *reply_base64;
1494 int retval;
1495
1496 const char *my_mechs[] = {OID_KERBEROS5_OLD, NULL};
1497 ssize_t len;
1498
1499 if ( (spnego.negTokenInit.mechListMIC.data == NULL) ||
1500 (spnego.negTokenInit.mechListMIC.length == 0) ) {
1501 DEBUG(1, ("Did not get a principal for krb5\n"));
1502 return False;
1503 }
1504
1505 principal = (char *)SMB_MALLOC(
1506 spnego.negTokenInit.mechListMIC.length+1);
1507
1508 if (principal == NULL) {
1509 DEBUG(1, ("Could not malloc principal\n"));
1510 return False;
1511 }
1512
1513 memcpy(principal, spnego.negTokenInit.mechListMIC.data,
1514 spnego.negTokenInit.mechListMIC.length);
1515 principal[spnego.negTokenInit.mechListMIC.length] = '\0';
1516
1517 retval = cli_krb5_get_ticket(principal, 0, &tkt, &session_key_krb5, 0, NULL, NULL);
1518
1519 if (retval) {
1520 char *user = NULL;
1521
1522 /* Let's try to first get the TGT, for that we need a
1523 password. */
1524
1525 if (opt_password == NULL) {
1526 DEBUG(10, ("Requesting password\n"));
1527 x_fprintf(x_stdout, "PW\n");
1528 return True;
1529 }
1530
1531 user = talloc_asprintf(talloc_tos(), "%s@%s", opt_username, opt_domain);
1532 if (!user) {
1533 return false;
1534 }
1535
1536 if ((retval = kerberos_kinit_password(user, opt_password, 0, NULL))) {
1537 DEBUG(10, ("Requesting TGT failed: %s\n", error_message(retval)));
1538 return False;
1539 }
1540
1541 retval = cli_krb5_get_ticket(principal, 0, &tkt, &session_key_krb5, 0, NULL, NULL);
1542
1543 if (retval) {
1544 DEBUG(10, ("Kinit suceeded, but getting a ticket failed: %s\n", error_message(retval)));
1545 return False;
1546 }
1547 }
1548
1549 data_blob_free(&session_key_krb5);
1550
1551 ZERO_STRUCT(reply);
1552
1553 reply.type = SPNEGO_NEG_TOKEN_INIT;
1554 reply.negTokenInit.mechTypes = my_mechs;
1555 reply.negTokenInit.reqFlags = 0;
1556 reply.negTokenInit.mechToken = tkt;
1557 reply.negTokenInit.mechListMIC = data_blob_null;
1558
1559 len = write_spnego_data(&to_server, &reply);
1560 data_blob_free(&tkt);
1561
1562 if (len == -1) {
1563 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1564 return False;
1565 }
1566
1567 reply_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1568 x_fprintf(x_stdout, "KK %s *\n", reply_base64);
1569
1570 TALLOC_FREE(reply_base64);
1571 data_blob_free(&to_server);
1572 DEBUG(10, ("sent GSS-SPNEGO KERBEROS5 negTokenInit\n"));
1573 return True;
1574 }
1575
1576 static void manage_client_krb5_targ(SPNEGO_DATA spnego)
1577 {
1578 switch (spnego.negTokenTarg.negResult) {
1579 case SPNEGO_ACCEPT_INCOMPLETE:
1580 DEBUG(1, ("Got a Kerberos negTokenTarg with ACCEPT_INCOMPLETE\n"));
1581 x_fprintf(x_stdout, "BH Got a Kerberos negTokenTarg with "
1582 "ACCEPT_INCOMPLETE\n");
1583 break;
1584 case SPNEGO_ACCEPT_COMPLETED:
1585 DEBUG(10, ("Accept completed\n"));
1586 x_fprintf(x_stdout, "AF\n");
1587 break;
1588 case SPNEGO_REJECT:
1589 DEBUG(10, ("Rejected\n"));
1590 x_fprintf(x_stdout, "NA\n");
1591 break;
1592 default:
1593 DEBUG(1, ("Got an invalid negTokenTarg\n"));
1594 x_fprintf(x_stdout, "AF\n");
1595 }
1596 }
1597
1598 #endif
1599
1600 static void manage_gss_spnego_client_request(struct ntlm_auth_state *state,
1601 char *buf, int length)
1602 {
1603 DATA_BLOB request;
1604 SPNEGO_DATA spnego;
1605 ssize_t len;
1606
1607 if (!opt_username || !*opt_username) {
1608 x_fprintf(x_stderr, "username must be specified!\n\n");
1609 exit(1);
1610 }
1611
1612 if (strlen(buf) <= 3) {
1613 DEBUG(1, ("SPNEGO query [%s] too short\n", buf));
1614 x_fprintf(x_stdout, "BH SPNEGO query too short\n");
1615 return;
1616 }
1617
1618 request = base64_decode_data_blob(buf+3);
1619
1620 if (strncmp(buf, "PW ", 3) == 0) {
1621
1622 /* We asked for a password and obviously got it :-) */
1623
1624 opt_password = SMB_STRNDUP((const char *)request.data, request.length);
1625
1626 if (opt_password == NULL) {
1627 DEBUG(1, ("Out of memory\n"));
1628 x_fprintf(x_stdout, "BH Out of memory\n");
1629 data_blob_free(&request);
1630 return;
1631 }
1632
1633 x_fprintf(x_stdout, "OK\n");
1634 data_blob_free(&request);
1635 return;
1636 }
1637
1638 if ( (strncmp(buf, "TT ", 3) != 0) &&
1639 (strncmp(buf, "AF ", 3) != 0) &&
1640 (strncmp(buf, "NA ", 3) != 0) ) {
1641 DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
1642 x_fprintf(x_stdout, "BH SPNEGO request invalid\n");
1643 data_blob_free(&request);
1644 return;
1645 }
1646
1647 /* So we got a server challenge to generate a SPNEGO
1648 client-to-server request... */
1649
1650 len = read_spnego_data(talloc_tos(), request, &spnego);
1651 data_blob_free(&request);
1652
1653 if (len == -1) {
1654 DEBUG(1, ("Could not read SPNEGO data for [%s]\n", buf));
1655 x_fprintf(x_stdout, "BH Could not read SPNEGO data\n");
1656 return;
1657 }
1658
1659 if (spnego.type == SPNEGO_NEG_TOKEN_INIT) {
1660
1661 /* The server offers a list of mechanisms */
1662
1663 const char **mechType = (const char **)spnego.negTokenInit.mechTypes;
1664
1665 while (*mechType != NULL) {
1666
1667 #ifdef HAVE_KRB5
1668 if ( (strcmp(*mechType, OID_KERBEROS5_OLD) == 0) ||
1669 (strcmp(*mechType, OID_KERBEROS5) == 0) ) {
1670 if (manage_client_krb5_init(spnego))
1671 goto out;
1672 }
1673 #endif
1674
1675 if (strcmp(*mechType, OID_NTLMSSP) == 0) {
1676 if (manage_client_ntlmssp_init(spnego))
1677 goto out;
1678 }
1679
1680 mechType++;
1681 }
1682
1683 DEBUG(1, ("Server offered no compatible mechanism\n"));
1684 x_fprintf(x_stdout, "BH Server offered no compatible mechanism\n");
1685 return;
1686 }
1687
1688 if (spnego.type == SPNEGO_NEG_TOKEN_TARG) {
1689
1690 if (spnego.negTokenTarg.supportedMech == NULL) {
1691 /* On accept/reject Windows does not send the
1692 mechanism anymore. Handle that here and
1693 shut down the mechanisms. */
1694
1695 switch (spnego.negTokenTarg.negResult) {
1696 case SPNEGO_ACCEPT_COMPLETED:
1697 x_fprintf(x_stdout, "AF\n");
1698 break;
1699 case SPNEGO_REJECT:
1700 x_fprintf(x_stdout, "NA\n");
1701 break;
1702 default:
1703 DEBUG(1, ("Got a negTokenTarg with no mech and an "
1704 "unknown negResult: %d\n",
1705 spnego.negTokenTarg.negResult));
1706 x_fprintf(x_stdout, "BH Got a negTokenTarg with"
1707 " no mech and an unknown "
1708 "negResult\n");
1709 }
1710
1711 ntlmssp_end(&client_ntlmssp_state);
1712 goto out;
1713 }
1714
1715 if (strcmp(spnego.negTokenTarg.supportedMech,
1716 OID_NTLMSSP) == 0) {
1717 manage_client_ntlmssp_targ(spnego);
1718 goto out;
1719 }
1720
1721 #if HAVE_KRB5
1722 if (strcmp(spnego.negTokenTarg.supportedMech,
1723 OID_KERBEROS5_OLD) == 0) {
1724 manage_client_krb5_targ(spnego);
1725 goto out;
1726 }
1727 #endif
1728
1729 }
1730
1731 DEBUG(1, ("Got an SPNEGO token I could not handle [%s]!\n", buf));
1732 x_fprintf(x_stdout, "BH Got an SPNEGO token I could not handle\n");
1733 return;
1734
1735 out:
1736 free_spnego_data(&spnego);
1737 return;
1738 }
1739
1740 static void manage_ntlm_server_1_request(struct ntlm_auth_state *state,
1741 char *buf, int length)
1742 {
1743 char *request, *parameter;
1744 static DATA_BLOB challenge;
1745 static DATA_BLOB lm_response;
1746 static DATA_BLOB nt_response;
1747 static char *full_username;
1748 static char *username;
1749 static char *domain;
1750 static char *plaintext_password;
1751 static bool ntlm_server_1_user_session_key;
1752 static bool ntlm_server_1_lm_session_key;
1753
1754 if (strequal(buf, ".")) {
1755 if (!full_username && !username) {
1756 x_fprintf(x_stdout, "Error: No username supplied!\n");
1757 } else if (plaintext_password) {
1758 /* handle this request as plaintext */
1759 if (!full_username) {
1760 if (asprintf(&full_username, "%s%c%s", domain, winbind_separator(), username) == -1) {
1761 x_fprintf(x_stdout, "Error: Out of memory in asprintf!\n.\n");
1762 return;
1763 }
1764 }
1765 if (check_plaintext_auth(full_username, plaintext_password, False)) {
1766 x_fprintf(x_stdout, "Authenticated: Yes\n");
1767 } else {
1768 x_fprintf(x_stdout, "Authenticated: No\n");
1769 }
1770 } else if (!lm_response.data && !nt_response.data) {
1771 x_fprintf(x_stdout, "Error: No password supplied!\n");
1772 } else if (!challenge.data) {
1773 x_fprintf(x_stdout, "Error: No lanman-challenge supplied!\n");
1774 } else {
1775 char *error_string = NULL;
1776 uchar lm_key[8];
1777 uchar user_session_key[16];
1778 uint32 flags = 0;
1779
1780 if (full_username && !username) {
1781 fstring fstr_user;
1782 fstring fstr_domain;
1783
1784 if (!parse_ntlm_auth_domain_user(full_username, fstr_user, fstr_domain)) {
1785 /* username might be 'tainted', don't print into our new-line deleimianted stream */
1786 x_fprintf(x_stdout, "Error: Could not parse into domain and username\n");
1787 }
1788 SAFE_FREE(username);
1789 SAFE_FREE(domain);
1790 username = smb_xstrdup(fstr_user);
1791 domain = smb_xstrdup(fstr_domain);
1792 }
1793
1794 if (!domain) {
1795 domain = smb_xstrdup(get_winbind_domain());
1796 }
1797
1798 if (ntlm_server_1_lm_session_key)
1799 flags |= WBFLAG_PAM_LMKEY;
1800
1801 if (ntlm_server_1_user_session_key)
1802 flags |= WBFLAG_PAM_USER_SESSION_KEY;
1803
1804 if (!NT_STATUS_IS_OK(
1805 contact_winbind_auth_crap(username,
1806 domain,
1807 global_myname(),
1808 &challenge,
1809 &lm_response,
1810 &nt_response,
1811 flags,
1812 lm_key,
1813 user_session_key,
1814 &error_string,
1815 NULL))) {
1816
1817 x_fprintf(x_stdout, "Authenticated: No\n");
1818 x_fprintf(x_stdout, "Authentication-Error: %s\n.\n", error_string);
1819 } else {
1820 static char zeros[16];
1821 char *hex_lm_key;
1822 char *hex_user_session_key;
1823
1824 x_fprintf(x_stdout, "Authenticated: Yes\n");
1825
1826 if (ntlm_server_1_lm_session_key
1827 && (memcmp(zeros, lm_key,
1828 sizeof(lm_key)) != 0)) {
1829 hex_lm_key = hex_encode_talloc(NULL,
1830 (const unsigned char *)lm_key,
1831 sizeof(lm_key));
1832 x_fprintf(x_stdout, "LANMAN-Session-Key: %s\n", hex_lm_key);
1833 TALLOC_FREE(hex_lm_key);
1834 }
1835
1836 if (ntlm_server_1_user_session_key
1837 && (memcmp(zeros, user_session_key,
1838 sizeof(user_session_key)) != 0)) {
1839 hex_user_session_key = hex_encode_talloc(NULL,
1840 (const unsigned char *)user_session_key,
1841 sizeof(user_session_key));
1842 x_fprintf(x_stdout, "User-Session-Key: %s\n", hex_user_session_key);
1843 TALLOC_FREE(hex_user_session_key);
1844 }
1845 }
1846 SAFE_FREE(error_string);
1847 }
1848 /* clear out the state */
1849 challenge = data_blob_null;
1850 nt_response = data_blob_null;
1851 lm_response = data_blob_null;
1852 SAFE_FREE(full_username);
1853 SAFE_FREE(username);
1854 SAFE_FREE(domain);
1855 SAFE_FREE(plaintext_password);
1856 ntlm_server_1_user_session_key = False;
1857 ntlm_server_1_lm_session_key = False;
1858 x_fprintf(x_stdout, ".\n");
1859
1860 return;
1861 }
1862
1863 request = buf;
1864
1865 /* Indicates a base64 encoded structure */
1866 parameter = strstr_m(request, ":: ");
1867 if (!parameter) {
1868 parameter = strstr_m(request, ": ");
1869
1870 if (!parameter) {
1871 DEBUG(0, ("Parameter not found!\n"));
1872 x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
1873 return;
1874 }
1875
1876 parameter[0] ='\0';
1877 parameter++;
1878 parameter[0] ='\0';
1879 parameter++;
1880
1881 } else {
1882 parameter[0] ='\0';
1883 parameter++;
1884 parameter[0] ='\0';
1885 parameter++;
1886 parameter[0] ='\0';
1887 parameter++;
1888
1889 base64_decode_inplace(parameter);
1890 }
1891
1892 if (strequal(request, "LANMAN-Challenge")) {
1893 challenge = strhex_to_data_blob(NULL, parameter);
1894 if (challenge.length != 8) {
1895 x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 8)\n.\n",
1896 parameter,
1897 (int)challenge.length);
1898 challenge = data_blob_null;
1899 }
1900 } else if (strequal(request, "NT-Response")) {
1901 nt_response = strhex_to_data_blob(NULL, parameter);
1902 if (nt_response.length < 24) {
1903 x_fprintf(x_stdout, "Error: hex decode of %s failed! (only got %d bytes, needed at least 24)\n.\n",
1904 parameter,
1905 (int)nt_response.length);
1906 nt_response = data_blob_null;
1907 }
1908 } else if (strequal(request, "LANMAN-Response")) {
1909 lm_response = strhex_to_data_blob(NULL, parameter);
1910 if (lm_response.length != 24) {
1911 x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 24)\n.\n",
1912 parameter,
1913 (int)lm_response.length);
1914 lm_response = data_blob_null;
1915 }
1916 } else if (strequal(request, "Password")) {
1917 plaintext_password = smb_xstrdup(parameter);
1918 } else if (strequal(request, "NT-Domain")) {
1919 domain = smb_xstrdup(parameter);
1920 } else if (strequal(request, "Username")) {
1921 username = smb_xstrdup(parameter);
1922 } else if (strequal(request, "Full-Username")) {
1923 full_username = smb_xstrdup(parameter);
1924 } else if (strequal(request, "Request-User-Session-Key")) {
1925 ntlm_server_1_user_session_key = strequal(parameter, "Yes");
1926 } else if (strequal(request, "Request-LanMan-Session-Key")) {
1927 ntlm_server_1_lm_session_key = strequal(parameter, "Yes");
1928 } else {
1929 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
1930 }
1931 }
1932
1933 static void manage_ntlm_change_password_1_request(struct ntlm_auth_state *state,
1934 char *buf, int length)
1935 {
1936 char *request, *parameter;
1937 static DATA_BLOB new_nt_pswd;
1938 static DATA_BLOB old_nt_hash_enc;
1939 static DATA_BLOB new_lm_pswd;
1940 static DATA_BLOB old_lm_hash_enc;
1941 static char *full_username = NULL;
1942 static char *username = NULL;
1943 static char *domain = NULL;
1944 static char *newpswd = NULL;
1945 static char *oldpswd = NULL;
1946
1947 if (strequal(buf, ".")) {
1948 if(newpswd && oldpswd) {
1949 uchar old_nt_hash[16];
1950 uchar old_lm_hash[16];
1951 uchar new_nt_hash[16];
1952 uchar new_lm_hash[16];
1953
1954 new_nt_pswd = data_blob(NULL, 516);
1955 old_nt_hash_enc = data_blob(NULL, 16);
1956
1957 /* Calculate the MD4 hash (NT compatible) of the
1958 * password */
1959 E_md4hash(oldpswd, old_nt_hash);
1960 E_md4hash(newpswd, new_nt_hash);
1961
1962 /* E_deshash returns false for 'long'
1963 passwords (> 14 DOS chars).
1964
1965 Therefore, don't send a buffer
1966 encrypted with the truncated hash
1967 (it could allow an even easier
1968 attack on the password)
1969
1970 Likewise, obey the admin's restriction
1971 */
1972
1973 if (lp_client_lanman_auth() &&
1974 E_deshash(newpswd, new_lm_hash) &&
1975 E_deshash(oldpswd, old_lm_hash)) {
1976 new_lm_pswd = data_blob(NULL, 516);
1977 old_lm_hash_enc = data_blob(NULL, 16);
1978 encode_pw_buffer(new_lm_pswd.data, newpswd,
1979 STR_UNICODE);
1980
1981 SamOEMhash(new_lm_pswd.data, old_nt_hash, 516);
1982 E_old_pw_hash(new_nt_hash, old_lm_hash,
1983 old_lm_hash_enc.data);
1984 } else {
1985 new_lm_pswd.data = NULL;
1986 new_lm_pswd.length = 0;
1987 old_lm_hash_enc.data = NULL;
1988 old_lm_hash_enc.length = 0;
1989 }
1990
1991 encode_pw_buffer(new_nt_pswd.data, newpswd,
1992 STR_UNICODE);
1993
1994 SamOEMhash(new_nt_pswd.data, old_nt_hash, 516);
1995 E_old_pw_hash(new_nt_hash, old_nt_hash,
1996 old_nt_hash_enc.data);
1997 }
1998
1999 if (!full_username && !username) {
2000 x_fprintf(x_stdout, "Error: No username supplied!\n");
2001 } else if ((!new_nt_pswd.data || !old_nt_hash_enc.data) &&
2002 (!new_lm_pswd.data || old_lm_hash_enc.data) ) {
2003 x_fprintf(x_stdout, "Error: No NT or LM password "
2004 "blobs supplied!\n");
2005 } else {
2006 char *error_string = NULL;
2007
2008 if (full_username && !username) {
2009 fstring fstr_user;
2010 fstring fstr_domain;
2011
2012 if (!parse_ntlm_auth_domain_user(full_username,
2013 fstr_user,
2014 fstr_domain)) {
2015 /* username might be 'tainted', don't
2016 * print into our new-line
2017 * deleimianted stream */
2018 x_fprintf(x_stdout, "Error: Could not "
2019 "parse into domain and "
2020 "username\n");
2021 SAFE_FREE(username);
2022 username = smb_xstrdup(full_username);
2023 } else {
2024 SAFE_FREE(username);
2025 SAFE_FREE(domain);
2026 username = smb_xstrdup(fstr_user);
2027 domain = smb_xstrdup(fstr_domain);
2028 }
2029
2030 }
2031
2032 if(!NT_STATUS_IS_OK(contact_winbind_change_pswd_auth_crap(
2033 username, domain,
2034 new_nt_pswd,
2035 old_nt_hash_enc,
2036 new_lm_pswd,
2037 old_lm_hash_enc,
2038 &error_string))) {
2039 x_fprintf(x_stdout, "Password-Change: No\n");
2040 x_fprintf(x_stdout, "Password-Change-Error: "
2041 "%s\n.\n", error_string);
2042 } else {
2043 x_fprintf(x_stdout, "Password-Change: Yes\n");
2044 }
2045
2046 SAFE_FREE(error_string);
2047 }
2048 /* clear out the state */
2049 new_nt_pswd = data_blob_null;
2050 old_nt_hash_enc = data_blob_null;
2051 new_lm_pswd = data_blob_null;
2052 old_nt_hash_enc = data_blob_null;
2053 SAFE_FREE(full_username);
2054 SAFE_FREE(username);
2055 SAFE_FREE(domain);
2056 SAFE_FREE(newpswd);
2057 SAFE_FREE(oldpswd);
2058 x_fprintf(x_stdout, ".\n");
2059
2060 return;
2061 }
2062
2063 request = buf;
2064
2065 /* Indicates a base64 encoded structure */
2066 parameter = strstr_m(request, ":: ");
2067 if (!parameter) {
2068 parameter = strstr_m(request, ": ");
2069
2070 if (!parameter) {
2071 DEBUG(0, ("Parameter not found!\n"));
2072 x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
2073 return;
2074 }
2075
2076 parameter[0] ='\0';
2077 parameter++;
2078 parameter[0] ='\0';
2079 parameter++;
2080 } else {
2081 parameter[0] ='\0';
2082 parameter++;
2083 parameter[0] ='\0';
2084 parameter++;
2085 parameter[0] ='\0';
2086 parameter++;
2087
2088 base64_decode_inplace(parameter);
2089 }
2090
2091 if (strequal(request, "new-nt-password-blob")) {
2092 new_nt_pswd = strhex_to_data_blob(NULL, parameter);
2093 if (new_nt_pswd.length != 516) {
2094 x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2095 "(got %d bytes, expected 516)\n.\n",
2096 parameter,
2097 (int)new_nt_pswd.length);
2098 new_nt_pswd = data_blob_null;
2099 }
2100 } else if (strequal(request, "old-nt-hash-blob")) {
2101 old_nt_hash_enc = strhex_to_data_blob(NULL, parameter);
2102 if (old_nt_hash_enc.length != 16) {
2103 x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2104 "(got %d bytes, expected 16)\n.\n",
2105 parameter,
2106 (int)old_nt_hash_enc.length);
2107 old_nt_hash_enc = data_blob_null;
2108 }
2109 } else if (strequal(request, "new-lm-password-blob")) {
2110 new_lm_pswd = strhex_to_data_blob(NULL, parameter);
2111 if (new_lm_pswd.length != 516) {
2112 x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2113 "(got %d bytes, expected 516)\n.\n",
2114 parameter,
2115 (int)new_lm_pswd.length);
2116 new_lm_pswd = data_blob_null;
2117 }
2118 }
2119 else if (strequal(request, "old-lm-hash-blob")) {
2120 old_lm_hash_enc = strhex_to_data_blob(NULL, parameter);
2121 if (old_lm_hash_enc.length != 16)
2122 {
2123 x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2124 "(got %d bytes, expected 16)\n.\n",
2125 parameter,
2126 (int)old_lm_hash_enc.length);
2127 old_lm_hash_enc = data_blob_null;
2128 }
2129 } else if (strequal(request, "nt-domain")) {
2130 domain = smb_xstrdup(parameter);
2131 } else if(strequal(request, "username")) {
2132 username = smb_xstrdup(parameter);
2133 } else if(strequal(request, "full-username")) {
2134 username = smb_xstrdup(parameter);
2135 } else if(strequal(request, "new-password")) {
2136 newpswd = smb_xstrdup(parameter);
2137 } else if (strequal(request, "old-password")) {
2138 oldpswd = smb_xstrdup(parameter);
2139 } else {
2140 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
2141 }
2142 }
2143
2144 static void manage_squid_request(struct ntlm_auth_state *state,
2145 stdio_helper_function fn)
2146 {
2147 char *buf;
2148 char tmp[INITIAL_BUFFER_SIZE+1];
2149 int length, buf_size = 0;
2150 char *c;
2151
2152 buf = talloc_strdup(state->mem_ctx, "");
2153 if (!buf) {
2154 DEBUG(0, ("Failed to allocate input buffer.\n"));
2155 x_fprintf(x_stderr, "ERR\n");
2156 exit(1);
2157 }
2158
2159 do {
2160
2161 /* this is not a typo - x_fgets doesn't work too well under
2162 * squid */
2163 if (fgets(tmp, sizeof(tmp)-1, stdin) == NULL) {
2164 if (ferror(stdin)) {
2165 DEBUG(1, ("fgets() failed! dying..... errno=%d "
2166 "(%s)\n", ferror(stdin),
2167 strerror(ferror(stdin))));
2168
2169 exit(1);
2170 }
2171 exit(0);
2172 }
2173
2174 buf = talloc_strdup_append_buffer(buf, tmp);
2175 buf_size += INITIAL_BUFFER_SIZE;
2176
2177 if (buf_size > MAX_BUFFER_SIZE) {
2178 DEBUG(2, ("Oversized message\n"));
2179 x_fprintf(x_stderr, "ERR\n");
2180 talloc_free(buf);
2181 return;
2182 }
2183
2184 c = strchr(buf, '\n');
2185 } while (c == NULL);
2186
2187 *c = '\0';
2188 length = c-buf;
2189
2190 DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
2191
2192 if (buf[0] == '\0') {
2193 DEBUG(2, ("Invalid Request\n"));
2194 x_fprintf(x_stderr, "ERR\n");
2195 talloc_free(buf);
2196 return;
2197 }
2198
2199 fn(state, buf, length);
2200 talloc_free(buf);
2201 }
2202
2203
2204 static void squid_stream(enum stdio_helper_mode stdio_mode, stdio_helper_function fn) {
2205 TALLOC_CTX *mem_ctx;
2206 struct ntlm_auth_state *state;
2207
2208 /* initialize FDescs */
2209 x_setbuf(x_stdout, NULL);
2210 x_setbuf(x_stderr, NULL);
2211
2212 mem_ctx = talloc_init("ntlm_auth");
2213 if (!mem_ctx) {
2214 DEBUG(0, ("squid_stream: Failed to create talloc context\n"));
2215 x_fprintf(x_stderr, "ERR\n");
2216 exit(1);
2217 }
2218
2219 state = talloc_zero(mem_ctx, struct ntlm_auth_state);
2220 if (!state) {
2221 DEBUG(0, ("squid_stream: Failed to talloc ntlm_auth_state\n"));
2222 x_fprintf(x_stderr, "ERR\n");
2223 exit(1);
2224 }
2225
2226 state->mem_ctx = mem_ctx;
2227 state->helper_mode = stdio_mode;
2228
2229 while(1) {
2230 manage_squid_request(state, fn);
2231 }
2232 }
2233
2234
2235 /* Authenticate a user with a challenge/response */
2236
2237 static bool check_auth_crap(void)
2238 {
2239 NTSTATUS nt_status;
2240 uint32 flags = 0;
2241 char lm_key[8];
2242 char user_session_key[16];
2243 char *hex_lm_key;
2244 char *hex_user_session_key;
2245 char *error_string;
2246 static uint8 zeros[16];
2247
2248 x_setbuf(x_stdout, NULL);
2249
2250 if (request_lm_key)
2251 flags |= WBFLAG_PAM_LMKEY;
2252
2253 if (request_user_session_key)
2254 flags |= WBFLAG_PAM_USER_SESSION_KEY;
2255
2256 flags |= WBFLAG_PAM_NT_STATUS_SQUASH;
2257
2258 nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
2259 opt_workstation,
2260 &opt_challenge,
2261 &opt_lm_response,
2262 &opt_nt_response,
2263 flags,
2264 (unsigned char *)lm_key,
2265 (unsigned char *)user_session_key,
2266 &error_string, NULL);
2267
2268 if (!NT_STATUS_IS_OK(nt_status)) {
2269 x_fprintf(x_stdout, "%s (0x%x)\n",
2270 error_string,
2271 NT_STATUS_V(nt_status));
2272 SAFE_FREE(error_string);
2273 return False;
2274 }
2275
2276 if (request_lm_key
2277 && (memcmp(zeros, lm_key,
2278 sizeof(lm_key)) != 0)) {
2279 hex_lm_key = hex_encode_talloc(NULL, (const unsigned char *)lm_key,
2280 sizeof(lm_key));
2281 x_fprintf(x_stdout, "LM_KEY: %s\n", hex_lm_key);
2282 TALLOC_FREE(hex_lm_key);
2283 }
2284 if (request_user_session_key
2285 && (memcmp(zeros, user_session_key,
2286 sizeof(user_session_key)) != 0)) {
2287 hex_user_session_key = hex_encode_talloc(NULL, (const unsigned char *)user_session_key,
2288 sizeof(user_session_key));
2289 x_fprintf(x_stdout, "NT_KEY: %s\n", hex_user_session_key);
2290 TALLOC_FREE(hex_user_session_key);
2291 }
2292
2293 return True;
2294 }
2295
2296 /* Main program */
2297
2298 enum {
2299 OPT_USERNAME = 1000,
2300 OPT_DOMAIN,
2301 OPT_WORKSTATION,
2302 OPT_CHALLENGE,
2303 OPT_RESPONSE,
2304 OPT_LM,
2305 OPT_NT,
2306 OPT_PASSWORD,
2307 OPT_LM_KEY,
2308 OPT_USER_SESSION_KEY,
2309 OPT_DIAGNOSTICS,
2310 OPT_REQUIRE_MEMBERSHIP,
2311 OPT_USE_CACHED_CREDS
2312 };
2313
2314 int main(int argc, const char **argv)
2315 {
2316 TALLOC_CTX *frame = talloc_stackframe();
2317 int opt;
2318 static const char *helper_protocol;
2319 static int diagnostics;
2320
2321 static const char *hex_challenge;
2322 static const char *hex_lm_response;
2323 static const char *hex_nt_response;
2324
2325 poptContext pc;
2326
2327 /* NOTE: DO NOT change this interface without considering the implications!
2328 This is an external interface, which other programs will use to interact
2329 with this helper.
2330 */
2331
2332 /* We do not use single-letter command abbreviations, because they harm future
2333 interface stability. */
2334
2335 struct poptOption long_options[] = {
2336 POPT_AUTOHELP
2337 { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
2338 { "username", 0, POPT_ARG_STRING, &opt_username, OPT_USERNAME, "username"},
2339 { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
2340 { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
2341 { "challenge", 0, POPT_ARG_STRING, &hex_challenge, OPT_CHALLENGE, "challenge (HEX encoded)"},
2342 { "lm-response", 0, POPT_ARG_STRING, &hex_lm_response, OPT_LM, "LM Response to the challenge (HEX encoded)"},
2343 { "nt-response", 0, POPT_ARG_STRING, &hex_nt_response, OPT_NT, "NT or NTLMv2 Response to the challenge (HEX encoded)"},
2344 { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
2345 { "request-lm-key", 0, POPT_ARG_NONE, &request_lm_key, OPT_LM_KEY, "Retrieve LM session key"},
2346 { "request-nt-key", 0, POPT_ARG_NONE, &request_user_session_key, OPT_USER_SESSION_KEY, "Retrieve User (NT) session key"},
2347 { "use-cached-creds", 0, POPT_ARG_NONE, &use_cached_creds, OPT_USE_CACHED_CREDS, "Use cached credentials if no password is given"},
2348 { "diagnostics", 0, POPT_ARG_NONE, &diagnostics, OPT_DIAGNOSTICS, "Perform diagnostics on the authentictaion chain"},
2349 { "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" },
2350 POPT_COMMON_CONFIGFILE
2351 POPT_COMMON_VERSION
2352 POPT_TABLEEND
2353 };
2354
2355 /* Samba client initialisation */
2356 load_case_tables();
2357
2358 dbf = x_stderr;
2359
2360 /* Parse options */
2361
2362 pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
2363
2364 /* Parse command line options */
2365
2366 if (argc == 1) {
2367 poptPrintHelp(pc, stderr, 0);
2368 return 1;
2369 }
2370
2371 while((opt = poptGetNextOpt(pc)) != -1) {
2372 /* Get generic config options like --configfile */
2373 }
2374
2375 poptFreeContext(pc);
2376
2377 if (!lp_load(get_dyn_CONFIGFILE(), True, False, False, True)) {
2378 d_fprintf(stderr, "ntlm_auth: error opening config file %s. Error was %s\n",
2379 get_dyn_CONFIGFILE(), strerror(errno));
2380 exit(1);
2381 }
2382
2383 pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
2384 POPT_CONTEXT_KEEP_FIRST);
2385
2386 while((opt = poptGetNextOpt(pc)) != -1) {
2387 switch (opt) {
2388 case OPT_CHALLENGE:
2389 opt_challenge = strhex_to_data_blob(NULL, hex_challenge);
2390 if (opt_challenge.length != 8) {
2391 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2392 hex_challenge,
2393 (int)opt_challenge.length);
2394 exit(1);
2395 }
2396 break;
2397 case OPT_LM:
2398 opt_lm_response = strhex_to_data_blob(NULL, hex_lm_response);
2399 if (opt_lm_response.length != 24) {
2400 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2401 hex_lm_response,
2402 (int)opt_lm_response.length);
2403 exit(1);
2404 }
2405 break;
2406
2407 case OPT_NT:
2408 opt_nt_response = strhex_to_data_blob(NULL, hex_nt_response);
2409 if (opt_nt_response.length < 24) {
2410 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2411 hex_nt_response,
2412 (int)opt_nt_response.length);
2413 exit(1);
2414 }
2415 break;
2416
2417 case OPT_REQUIRE_MEMBERSHIP:
2418 if (StrnCaseCmp("S-", require_membership_of, 2) == 0) {
2419 require_membership_of_sid = require_membership_of;
2420 }
2421 break;
2422 }
2423 }
2424
2425 if (opt_username) {
2426 char *domain = SMB_STRDUP(opt_username);
2427 char *p = strchr_m(domain, *lp_winbind_separator());
2428 if (p) {
2429 opt_username = p+1;
2430 *p = '\0';
2431 if (opt_domain && !strequal(opt_domain, domain)) {
2432 x_fprintf(x_stderr, "Domain specified in username (%s) "
2433 "doesn't match specified domain (%s)!\n\n",
2434 domain, opt_domain);
2435 poptPrintHelp(pc, stderr, 0);
2436 exit(1);
2437 }
2438 opt_domain = domain;
2439 } else {
2440 SAFE_FREE(domain);
2441 }
2442 }
2443
2444 /* Note: if opt_domain is "" then send no domain */
2445 if (opt_domain == NULL) {
2446 opt_domain = get_winbind_domain();
2447 }
2448
2449 if (opt_workstation == NULL) {
2450 opt_workstation = "";
2451 }
2452
2453 if (helper_protocol) {
2454 int i;
2455 for (i=0; i<NUM_HELPER_MODES; i++) {
2456 if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
2457 squid_stream(stdio_helper_protocols[i].mode, stdio_helper_protocols[i].fn);
2458 exit(0);
2459 }
2460 }
2461 x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol);
2462
2463 for (i=0; i<NUM_HELPER_MODES; i++) {
2464 x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name);
2465 }
2466
2467 exit(1);
2468 }
2469
2470 if (!opt_username || !*opt_username) {
2471 x_fprintf(x_stderr, "username must be specified!\n\n");
2472 poptPrintHelp(pc, stderr, 0);
2473 exit(1);
2474 }
2475
2476 if (opt_challenge.length) {
2477 if (!check_auth_crap()) {
2478 exit(1);
2479 }
2480 exit(0);
2481 }
2482
2483 if (!opt_password) {
2484 opt_password = getpass("password: ");
2485 }
2486
2487 if (diagnostics) {
2488 if (!diagnose_ntlm_auth()) {
2489 return 1;
2490 }
2491 } else {
2492 fstring user;
2493
2494 fstr_sprintf(user, "%s%c%s", opt_domain, winbind_separator(), opt_username);
2495 if (!check_plaintext_auth(user, opt_password, True)) {
2496 return 1;
2497 }
2498 }
2499
2500 /* Exit code */
2501
2502 poptFreeContext(pc);
2503 TALLOC_FREE(frame);
2504 return 0;
2505 }
Samba GIT mirror