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r15053: fix portabilities issues between 32-bit winbind clients and a 64-bit winbindd...
[Samba.git] / source / utils / ntlm_auth.c
blob2e879cc113250dd12249acf3486c133b849c04e8
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
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25 #include "includes.h"
26 #include "utils/ntlm_auth.h"
27
28 #undef DBGC_CLASS
29 #define DBGC_CLASS DBGC_WINBIND
30
31 #define SQUID_BUFFER_SIZE 2010
32
33 enum stdio_helper_mode {
34 SQUID_2_4_BASIC,
35 SQUID_2_5_BASIC,
36 SQUID_2_5_NTLMSSP,
37 NTLMSSP_CLIENT_1,
38 GSS_SPNEGO,
39 GSS_SPNEGO_CLIENT,
40 NTLM_SERVER_1,
41 NUM_HELPER_MODES
42 };
43
44 typedef void (*stdio_helper_function)(enum stdio_helper_mode stdio_helper_mode,
45 char *buf, int length);
46
47 static void manage_squid_basic_request (enum stdio_helper_mode stdio_helper_mode,
48 char *buf, int length);
49
50 static void manage_squid_ntlmssp_request (enum stdio_helper_mode stdio_helper_mode,
51 char *buf, int length);
52
53 static void manage_client_ntlmssp_request (enum stdio_helper_mode stdio_helper_mode,
54 char *buf, int length);
55
56 static void manage_gss_spnego_request (enum stdio_helper_mode stdio_helper_mode,
57 char *buf, int length);
58
59 static void manage_gss_spnego_client_request (enum stdio_helper_mode stdio_helper_mode,
60 char *buf, int length);
61
62 static void manage_ntlm_server_1_request (enum stdio_helper_mode stdio_helper_mode,
63 char *buf, int length);
64
65 static const struct {
66 enum stdio_helper_mode mode;
67 const char *name;
68 stdio_helper_function fn;
69 } stdio_helper_protocols[] = {
70 { SQUID_2_4_BASIC, "squid-2.4-basic", manage_squid_basic_request},
71 { SQUID_2_5_BASIC, "squid-2.5-basic", manage_squid_basic_request},
72 { SQUID_2_5_NTLMSSP, "squid-2.5-ntlmssp", manage_squid_ntlmssp_request},
73 { NTLMSSP_CLIENT_1, "ntlmssp-client-1", manage_client_ntlmssp_request},
74 { GSS_SPNEGO, "gss-spnego", manage_gss_spnego_request},
75 { GSS_SPNEGO_CLIENT, "gss-spnego-client", manage_gss_spnego_client_request},
76 { NTLM_SERVER_1, "ntlm-server-1", manage_ntlm_server_1_request},
77 { NUM_HELPER_MODES, NULL, NULL}
78 };
79
80 extern int winbindd_fd;
81
82 const char *opt_username;
83 const char *opt_domain;
84 const char *opt_workstation;
85 const char *opt_password;
86 static DATA_BLOB opt_challenge;
87 static DATA_BLOB opt_lm_response;
88 static DATA_BLOB opt_nt_response;
89 static int request_lm_key;
90 static int request_user_session_key;
91
92 static const char *require_membership_of;
93 static const char *require_membership_of_sid;
94
95 static char winbind_separator(void)
96 {
97 struct winbindd_response response;
98 static BOOL got_sep;
99 static char sep;
100
101 if (got_sep)
102 return sep;
103
104 ZERO_STRUCT(response);
105
106 /* Send off request */
107
108 if (winbindd_request_response(WINBINDD_INFO, NULL, &response) !=
109 NSS_STATUS_SUCCESS) {
110 d_printf("could not obtain winbind separator!\n");
111 return *lp_winbind_separator();
112 }
113
114 sep = response.data.info.winbind_separator;
115 got_sep = True;
116
117 if (!sep) {
118 d_printf("winbind separator was NULL!\n");
119 return *lp_winbind_separator();
120 }
121
122 return sep;
123 }
124
125 const char *get_winbind_domain(void)
126 {
127 struct winbindd_response response;
128
129 static fstring winbind_domain;
130 if (*winbind_domain) {
131 return winbind_domain;
132 }
133
134 ZERO_STRUCT(response);
135
136 /* Send off request */
137
138 if (winbindd_request_response(WINBINDD_DOMAIN_NAME, NULL, &response) !=
139 NSS_STATUS_SUCCESS) {
140 DEBUG(0, ("could not obtain winbind domain name!\n"));
141 return lp_workgroup();
142 }
143
144 fstrcpy(winbind_domain, response.data.domain_name);
145
146 return winbind_domain;
147
148 }
149
150 const char *get_winbind_netbios_name(void)
151 {
152 struct winbindd_response response;
153
154 static fstring winbind_netbios_name;
155
156 if (*winbind_netbios_name) {
157 return winbind_netbios_name;
158 }
159
160 ZERO_STRUCT(response);
161
162 /* Send off request */
163
164 if (winbindd_request_response(WINBINDD_NETBIOS_NAME, NULL, &response) !=
165 NSS_STATUS_SUCCESS) {
166 DEBUG(0, ("could not obtain winbind netbios name!\n"));
167 return global_myname();
168 }
169
170 fstrcpy(winbind_netbios_name, response.data.netbios_name);
171
172 return winbind_netbios_name;
173
174 }
175
176 DATA_BLOB get_challenge(void)
177 {
178 static DATA_BLOB chal;
179 if (opt_challenge.length)
180 return opt_challenge;
181
182 chal = data_blob(NULL, 8);
183
184 generate_random_buffer(chal.data, chal.length);
185 return chal;
186 }
187
188 /* Copy of parse_domain_user from winbindd_util.c. Parse a string of the
189 form DOMAIN/user into a domain and a user */
190
191 static BOOL parse_ntlm_auth_domain_user(const char *domuser, fstring domain,
192 fstring user)
193 {
194
195 char *p = strchr(domuser,winbind_separator());
196
197 if (!p) {
198 return False;
199 }
200
201 fstrcpy(user, p+1);
202 fstrcpy(domain, domuser);
203 domain[PTR_DIFF(p, domuser)] = 0;
204 strupper_m(domain);
205
206 return True;
207 }
208
209 static BOOL get_require_membership_sid(void) {
210 struct winbindd_request request;
211 struct winbindd_response response;
212
213 if (!require_membership_of) {
214 return True;
215 }
216
217 if (require_membership_of_sid) {
218 return True;
219 }
220
221 /* Otherwise, ask winbindd for the name->sid request */
222
223 ZERO_STRUCT(request);
224 ZERO_STRUCT(response);
225
226 if (!parse_ntlm_auth_domain_user(require_membership_of,
227 request.data.name.dom_name,
228 request.data.name.name)) {
229 DEBUG(0, ("Could not parse %s into seperate domain/name parts!\n",
230 require_membership_of));
231 return False;
232 }
233
234 if (winbindd_request_response(WINBINDD_LOOKUPNAME, &request, &response) !=
235 NSS_STATUS_SUCCESS) {
236 DEBUG(0, ("Winbindd lookupname failed to resolve %s into a SID!\n",
237 require_membership_of));
238 return False;
239 }
240
241 require_membership_of_sid = SMB_STRDUP(response.data.sid.sid);
242
243 if (require_membership_of_sid)
244 return True;
245
246 return False;
247 }
248 /* Authenticate a user with a plaintext password */
249
250 static BOOL check_plaintext_auth(const char *user, const char *pass,
251 BOOL stdout_diagnostics)
252 {
253 struct winbindd_request request;
254 struct winbindd_response response;
255 NSS_STATUS result;
256
257 if (!get_require_membership_sid()) {
258 return False;
259 }
260
261 /* Send off request */
262
263 ZERO_STRUCT(request);
264 ZERO_STRUCT(response);
265
266 fstrcpy(request.data.auth.user, user);
267 fstrcpy(request.data.auth.pass, pass);
268 if (require_membership_of_sid)
269 fstrcpy(request.data.auth.require_membership_of_sid, require_membership_of_sid);
270
271 result = winbindd_request_response(WINBINDD_PAM_AUTH, &request, &response);
272
273 /* Display response */
274
275 if (stdout_diagnostics) {
276 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
277 d_printf("Reading winbind reply failed! (0x01)\n");
278 }
279
280 d_printf("%s: %s (0x%x)\n",
281 response.data.auth.nt_status_string,
282 response.data.auth.error_string,
283 response.data.auth.nt_status);
284 } else {
285 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
286 DEBUG(1, ("Reading winbind reply failed! (0x01)\n"));
287 }
288
289 DEBUG(3, ("%s: %s (0x%x)\n",
290 response.data.auth.nt_status_string,
291 response.data.auth.error_string,
292 response.data.auth.nt_status));
293 }
294
295 return (result == NSS_STATUS_SUCCESS);
296 }
297
298 /* authenticate a user with an encrypted username/password */
299
300 NTSTATUS contact_winbind_auth_crap(const char *username,
301 const char *domain,
302 const char *workstation,
303 const DATA_BLOB *challenge,
304 const DATA_BLOB *lm_response,
305 const DATA_BLOB *nt_response,
306 uint32 flags,
307 uint8 lm_key[8],
308 uint8 user_session_key[16],
309 char **error_string,
310 char **unix_name)
311 {
312 NTSTATUS nt_status;
313 NSS_STATUS result;
314 struct winbindd_request request;
315 struct winbindd_response response;
316
317 if (!get_require_membership_sid()) {
318 return NT_STATUS_INVALID_PARAMETER;
319 }
320
321 ZERO_STRUCT(request);
322 ZERO_STRUCT(response);
323
324 request.flags = flags;
325
326 request.data.auth_crap.logon_parameters = MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT | MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT;
327
328 if (require_membership_of_sid)
329 fstrcpy(request.data.auth_crap.require_membership_of_sid, require_membership_of_sid);
330
331 fstrcpy(request.data.auth_crap.user, username);
332 fstrcpy(request.data.auth_crap.domain, domain);
333
334 fstrcpy(request.data.auth_crap.workstation,
335 workstation);
336
337 memcpy(request.data.auth_crap.chal, challenge->data, MIN(challenge->length, 8));
338
339 if (lm_response && lm_response->length) {
340 memcpy(request.data.auth_crap.lm_resp,
341 lm_response->data,
342 MIN(lm_response->length, sizeof(request.data.auth_crap.lm_resp)));
343 request.data.auth_crap.lm_resp_len = lm_response->length;
344 }
345
346 if (nt_response && nt_response->length) {
347 memcpy(request.data.auth_crap.nt_resp,
348 nt_response->data,
349 MIN(nt_response->length, sizeof(request.data.auth_crap.nt_resp)));
350 request.data.auth_crap.nt_resp_len = nt_response->length;
351 }
352
353 result = winbindd_request_response(WINBINDD_PAM_AUTH_CRAP, &request, &response);
354
355 /* Display response */
356
357 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
358 nt_status = NT_STATUS_UNSUCCESSFUL;
359 if (error_string)
360 *error_string = smb_xstrdup("Reading winbind reply failed!");
361 free_response(&response);
362 return nt_status;
363 }
364
365 nt_status = (NT_STATUS(response.data.auth.nt_status));
366 if (!NT_STATUS_IS_OK(nt_status)) {
367 if (error_string)
368 *error_string = smb_xstrdup(response.data.auth.error_string);
369 free_response(&response);
370 return nt_status;
371 }
372
373 if ((flags & WBFLAG_PAM_LMKEY) && lm_key) {
374 memcpy(lm_key, response.data.auth.first_8_lm_hash,
375 sizeof(response.data.auth.first_8_lm_hash));
376 }
377 if ((flags & WBFLAG_PAM_USER_SESSION_KEY) && user_session_key) {
378 memcpy(user_session_key, response.data.auth.user_session_key,
379 sizeof(response.data.auth.user_session_key));
380 }
381
382 if (flags & WBFLAG_PAM_UNIX_NAME) {
383 *unix_name = SMB_STRDUP((char *)response.extra_data.data);
384 if (!*unix_name) {
385 free_response(&response);
386 return NT_STATUS_NO_MEMORY;
387 }
388 }
389
390 free_response(&response);
391 return nt_status;
392 }
393
394 static NTSTATUS winbind_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
395 {
396 static const char zeros[16];
397 NTSTATUS nt_status;
398 char *error_string;
399 uint8 lm_key[8];
400 uint8 user_sess_key[16];
401 char *unix_name;
402
403 nt_status = contact_winbind_auth_crap(ntlmssp_state->user, ntlmssp_state->domain,
404 ntlmssp_state->workstation,
405 &ntlmssp_state->chal,
406 &ntlmssp_state->lm_resp,
407 &ntlmssp_state->nt_resp,
408 WBFLAG_PAM_LMKEY | WBFLAG_PAM_USER_SESSION_KEY | WBFLAG_PAM_UNIX_NAME,
409 lm_key, user_sess_key,
410 &error_string, &unix_name);
411
412 if (NT_STATUS_IS_OK(nt_status)) {
413 if (memcmp(lm_key, zeros, 8) != 0) {
414 *lm_session_key = data_blob(NULL, 16);
415 memcpy(lm_session_key->data, lm_key, 8);
416 memset(lm_session_key->data+8, '\0', 8);
417 }
418
419 if (memcmp(user_sess_key, zeros, 16) != 0) {
420 *user_session_key = data_blob(user_sess_key, 16);
421 }
422 ntlmssp_state->auth_context = talloc_strdup(ntlmssp_state->mem_ctx, unix_name);
423 SAFE_FREE(unix_name);
424 } else {
425 DEBUG(NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED) ? 0 : 3,
426 ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
427 ntlmssp_state->domain, ntlmssp_state->user,
428 ntlmssp_state->workstation,
429 error_string ? error_string : "unknown error (NULL)"));
430 ntlmssp_state->auth_context = NULL;
431 }
432 return nt_status;
433 }
434
435 static NTSTATUS local_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
436 {
437 NTSTATUS nt_status;
438 uint8 lm_pw[16], nt_pw[16];
439
440 nt_lm_owf_gen (opt_password, nt_pw, lm_pw);
441
442 nt_status = ntlm_password_check(ntlmssp_state->mem_ctx,
443 &ntlmssp_state->chal,
444 &ntlmssp_state->lm_resp,
445 &ntlmssp_state->nt_resp,
446 NULL, NULL,
447 ntlmssp_state->user,
448 ntlmssp_state->user,
449 ntlmssp_state->domain,
450 lm_pw, nt_pw, user_session_key, lm_session_key);
451
452 if (NT_STATUS_IS_OK(nt_status)) {
453 ntlmssp_state->auth_context = talloc_asprintf(ntlmssp_state->mem_ctx,
454 "%s%c%s", ntlmssp_state->domain,
455 *lp_winbind_separator(),
456 ntlmssp_state->user);
457 } else {
458 DEBUG(3, ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
459 ntlmssp_state->domain, ntlmssp_state->user, ntlmssp_state->workstation,
460 nt_errstr(nt_status)));
461 ntlmssp_state->auth_context = NULL;
462 }
463 return nt_status;
464 }
465
466 static NTSTATUS ntlm_auth_start_ntlmssp_client(NTLMSSP_STATE **client_ntlmssp_state)
467 {
468 NTSTATUS status;
469 if ( (opt_username == NULL) || (opt_domain == NULL) ) {
470 status = NT_STATUS_UNSUCCESSFUL;
471 DEBUG(1, ("Need username and domain for NTLMSSP\n"));
472 return NT_STATUS_INVALID_PARAMETER;
473 }
474
475 status = ntlmssp_client_start(client_ntlmssp_state);
476
477 if (!NT_STATUS_IS_OK(status)) {
478 DEBUG(1, ("Could not start NTLMSSP client: %s\n",
479 nt_errstr(status)));
480 ntlmssp_end(client_ntlmssp_state);
481 return status;
482 }
483
484 status = ntlmssp_set_username(*client_ntlmssp_state, opt_username);
485
486 if (!NT_STATUS_IS_OK(status)) {
487 DEBUG(1, ("Could not set username: %s\n",
488 nt_errstr(status)));
489 ntlmssp_end(client_ntlmssp_state);
490 return status;
491 }
492
493 status = ntlmssp_set_domain(*client_ntlmssp_state, opt_domain);
494
495 if (!NT_STATUS_IS_OK(status)) {
496 DEBUG(1, ("Could not set domain: %s\n",
497 nt_errstr(status)));
498 ntlmssp_end(client_ntlmssp_state);
499 return status;
500 }
501
502 status = ntlmssp_set_password(*client_ntlmssp_state, opt_password);
503
504 if (!NT_STATUS_IS_OK(status)) {
505 DEBUG(1, ("Could not set password: %s\n",
506 nt_errstr(status)));
507 ntlmssp_end(client_ntlmssp_state);
508 return status;
509 }
510 return NT_STATUS_OK;
511 }
512
513 static NTSTATUS ntlm_auth_start_ntlmssp_server(NTLMSSP_STATE **ntlmssp_state)
514 {
515 NTSTATUS status = ntlmssp_server_start(ntlmssp_state);
516
517 if (!NT_STATUS_IS_OK(status)) {
518 DEBUG(1, ("Could not start NTLMSSP client: %s\n",
519 nt_errstr(status)));
520 return status;
521 }
522
523 /* Have we been given a local password, or should we ask winbind? */
524 if (opt_password) {
525 (*ntlmssp_state)->check_password = local_pw_check;
526 (*ntlmssp_state)->get_domain = lp_workgroup;
527 (*ntlmssp_state)->get_global_myname = global_myname;
528 } else {
529 (*ntlmssp_state)->check_password = winbind_pw_check;
530 (*ntlmssp_state)->get_domain = get_winbind_domain;
531 (*ntlmssp_state)->get_global_myname = get_winbind_netbios_name;
532 }
533 return NT_STATUS_OK;
534 }
535
536 static void manage_squid_ntlmssp_request(enum stdio_helper_mode stdio_helper_mode,
537 char *buf, int length)
538 {
539 static NTLMSSP_STATE *ntlmssp_state = NULL;
540 DATA_BLOB request, reply;
541 NTSTATUS nt_status;
542
543 if (strlen(buf) < 2) {
544 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
545 x_fprintf(x_stdout, "BH\n");
546 return;
547 }
548
549 if (strlen(buf) > 3) {
550 request = base64_decode_data_blob(buf + 3);
551 } else {
552 request = data_blob(NULL, 0);
553 }
554
555 if ((strncmp(buf, "PW ", 3) == 0)) {
556 /* The calling application wants us to use a local password (rather than winbindd) */
557
558 opt_password = SMB_STRNDUP((const char *)request.data, request.length);
559
560 if (opt_password == NULL) {
561 DEBUG(1, ("Out of memory\n"));
562 x_fprintf(x_stdout, "BH\n");
563 data_blob_free(&request);
564 return;
565 }
566
567 x_fprintf(x_stdout, "OK\n");
568 data_blob_free(&request);
569 return;
570 }
571
572 if (strncmp(buf, "YR", 2) == 0) {
573 if (ntlmssp_state)
574 ntlmssp_end(&ntlmssp_state);
575 } else if (strncmp(buf, "KK", 2) == 0) {
576
577 } else {
578 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
579 x_fprintf(x_stdout, "BH\n");
580 return;
581 }
582
583 if (!ntlmssp_state) {
584 if (!NT_STATUS_IS_OK(nt_status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
585 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
586 return;
587 }
588 }
589
590 DEBUG(10, ("got NTLMSSP packet:\n"));
591 dump_data(10, (const char *)request.data, request.length);
592
593 nt_status = ntlmssp_update(ntlmssp_state, request, &reply);
594
595 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
596 char *reply_base64 = base64_encode_data_blob(reply);
597 x_fprintf(x_stdout, "TT %s\n", reply_base64);
598 SAFE_FREE(reply_base64);
599 data_blob_free(&reply);
600 DEBUG(10, ("NTLMSSP challenge\n"));
601 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
602 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
603 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
604
605 ntlmssp_end(&ntlmssp_state);
606 } else if (!NT_STATUS_IS_OK(nt_status)) {
607 x_fprintf(x_stdout, "NA %s\n", nt_errstr(nt_status));
608 DEBUG(10, ("NTLMSSP %s\n", nt_errstr(nt_status)));
609 } else {
610 x_fprintf(x_stdout, "AF %s\n", (char *)ntlmssp_state->auth_context);
611 DEBUG(10, ("NTLMSSP OK!\n"));
612 }
613
614 data_blob_free(&request);
615 }
616
617 static void manage_client_ntlmssp_request(enum stdio_helper_mode stdio_helper_mode,
618 char *buf, int length)
619 {
620 static NTLMSSP_STATE *ntlmssp_state = NULL;
621 DATA_BLOB request, reply;
622 NTSTATUS nt_status;
623 BOOL first = False;
624
625 if (strlen(buf) < 2) {
626 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
627 x_fprintf(x_stdout, "BH\n");
628 return;
629 }
630
631 if (strlen(buf) > 3) {
632 request = base64_decode_data_blob(buf + 3);
633 } else {
634 request = data_blob(NULL, 0);
635 }
636
637 if (strncmp(buf, "PW ", 3) == 0) {
638 /* We asked for a password and obviously got it :-) */
639
640 opt_password = SMB_STRNDUP((const char *)request.data, request.length);
641
642 if (opt_password == NULL) {
643 DEBUG(1, ("Out of memory\n"));
644 x_fprintf(x_stdout, "BH\n");
645 data_blob_free(&request);
646 return;
647 }
648
649 x_fprintf(x_stdout, "OK\n");
650 data_blob_free(&request);
651 return;
652 }
653
654 if (opt_password == NULL) {
655
656 /* Request a password from the calling process. After
657 sending it, the calling process should retry asking for the negotiate. */
658
659 DEBUG(10, ("Requesting password\n"));
660 x_fprintf(x_stdout, "PW\n");
661 return;
662 }
663
664 if (strncmp(buf, "YR", 2) == 0) {
665 if (ntlmssp_state)
666 ntlmssp_end(&ntlmssp_state);
667 } else if (strncmp(buf, "TT", 2) == 0) {
668
669 } else {
670 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
671 x_fprintf(x_stdout, "BH\n");
672 return;
673 }
674
675 if (!ntlmssp_state) {
676 if (!NT_STATUS_IS_OK(nt_status = ntlm_auth_start_ntlmssp_client(&ntlmssp_state))) {
677 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
678 return;
679 }
680 first = True;
681 }
682
683 DEBUG(10, ("got NTLMSSP packet:\n"));
684 dump_data(10, (const char *)request.data, request.length);
685
686 nt_status = ntlmssp_update(ntlmssp_state, request, &reply);
687
688 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
689 char *reply_base64 = base64_encode_data_blob(reply);
690 if (first) {
691 x_fprintf(x_stdout, "YR %s\n", reply_base64);
692 } else {
693 x_fprintf(x_stdout, "KK %s\n", reply_base64);
694 }
695 SAFE_FREE(reply_base64);
696 data_blob_free(&reply);
697 DEBUG(10, ("NTLMSSP challenge\n"));
698 } else if (NT_STATUS_IS_OK(nt_status)) {
699 char *reply_base64 = base64_encode_data_blob(reply);
700 x_fprintf(x_stdout, "AF %s\n", reply_base64);
701 SAFE_FREE(reply_base64);
702 DEBUG(10, ("NTLMSSP OK!\n"));
703 if (ntlmssp_state)
704 ntlmssp_end(&ntlmssp_state);
705 } else {
706 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
707 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
708 if (ntlmssp_state)
709 ntlmssp_end(&ntlmssp_state);
710 }
711
712 data_blob_free(&request);
713 }
714
715 static void manage_squid_basic_request(enum stdio_helper_mode stdio_helper_mode,
716 char *buf, int length)
717 {
718 char *user, *pass;
719 user=buf;
720
721 pass=memchr(buf,' ',length);
722 if (!pass) {
723 DEBUG(2, ("Password not found. Denying access\n"));
724 x_fprintf(x_stdout, "ERR\n");
725 return;
726 }
727 *pass='\0';
728 pass++;
729
730 if (stdio_helper_mode == SQUID_2_5_BASIC) {
731 rfc1738_unescape(user);
732 rfc1738_unescape(pass);
733 }
734
735 if (check_plaintext_auth(user, pass, False)) {
736 x_fprintf(x_stdout, "OK\n");
737 } else {
738 x_fprintf(x_stdout, "ERR\n");
739 }
740 }
741
742 static void offer_gss_spnego_mechs(void) {
743
744 DATA_BLOB token;
745 SPNEGO_DATA spnego;
746 ssize_t len;
747 char *reply_base64;
748
749 pstring principal;
750 pstring myname_lower;
751
752 ZERO_STRUCT(spnego);
753
754 pstrcpy(myname_lower, global_myname());
755 strlower_m(myname_lower);
756
757 pstr_sprintf(principal, "%s$@%s", myname_lower, lp_realm());
758
759 /* Server negTokenInit (mech offerings) */
760 spnego.type = SPNEGO_NEG_TOKEN_INIT;
761 spnego.negTokenInit.mechTypes = SMB_XMALLOC_ARRAY(const char *, 2);
762 #ifdef HAVE_KRB5
763 spnego.negTokenInit.mechTypes[0] = smb_xstrdup(OID_KERBEROS5_OLD);
764 spnego.negTokenInit.mechTypes[1] = smb_xstrdup(OID_NTLMSSP);
765 spnego.negTokenInit.mechTypes[2] = NULL;
766 #else
767 spnego.negTokenInit.mechTypes[0] = smb_xstrdup(OID_NTLMSSP);
768 spnego.negTokenInit.mechTypes[1] = NULL;
769 #endif
770
771
772 spnego.negTokenInit.mechListMIC = data_blob(principal,
773 strlen(principal));
774
775 len = write_spnego_data(&token, &spnego);
776 free_spnego_data(&spnego);
777
778 if (len == -1) {
779 DEBUG(1, ("Could not write SPNEGO data blob\n"));
780 x_fprintf(x_stdout, "BH\n");
781 return;
782 }
783
784 reply_base64 = base64_encode_data_blob(token);
785 x_fprintf(x_stdout, "TT %s *\n", reply_base64);
786
787 SAFE_FREE(reply_base64);
788 data_blob_free(&token);
789 DEBUG(10, ("sent SPNEGO negTokenInit\n"));
790 return;
791 }
792
793 static void manage_gss_spnego_request(enum stdio_helper_mode stdio_helper_mode,
794 char *buf, int length)
795 {
796 static NTLMSSP_STATE *ntlmssp_state = NULL;
797 SPNEGO_DATA request, response;
798 DATA_BLOB token;
799 NTSTATUS status;
800 ssize_t len;
801
802 char *user = NULL;
803 char *domain = NULL;
804
805 const char *reply_code;
806 char *reply_base64;
807 pstring reply_argument;
808
809 if (strlen(buf) < 2) {
810 DEBUG(1, ("SPENGO query [%s] invalid", buf));
811 x_fprintf(x_stdout, "BH\n");
812 return;
813 }
814
815 if (strncmp(buf, "YR", 2) == 0) {
816 if (ntlmssp_state)
817 ntlmssp_end(&ntlmssp_state);
818 } else if (strncmp(buf, "KK", 2) == 0) {
819
820 } else {
821 DEBUG(1, ("SPENGO query [%s] invalid", buf));
822 x_fprintf(x_stdout, "BH\n");
823 return;
824 }
825
826 if ( (strlen(buf) == 2)) {
827
828 /* no client data, get the negTokenInit offering
829 mechanisms */
830
831 offer_gss_spnego_mechs();
832 return;
833 }
834
835 /* All subsequent requests have a blob. This might be negTokenInit or negTokenTarg */
836
837 if (strlen(buf) <= 3) {
838 DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
839 x_fprintf(x_stdout, "BH\n");
840 return;
841 }
842
843 token = base64_decode_data_blob(buf + 3);
844 len = read_spnego_data(token, &request);
845 data_blob_free(&token);
846
847 if (len == -1) {
848 DEBUG(1, ("GSS-SPNEGO query [%s] invalid", buf));
849 x_fprintf(x_stdout, "BH\n");
850 return;
851 }
852
853 if (request.type == SPNEGO_NEG_TOKEN_INIT) {
854
855 /* Second request from Client. This is where the
856 client offers its mechanism to use. */
857
858 if ( (request.negTokenInit.mechTypes == NULL) ||
859 (request.negTokenInit.mechTypes[0] == NULL) ) {
860 DEBUG(1, ("Client did not offer any mechanism"));
861 x_fprintf(x_stdout, "BH\n");
862 return;
863 }
864
865 status = NT_STATUS_UNSUCCESSFUL;
866 if (strcmp(request.negTokenInit.mechTypes[0], OID_NTLMSSP) == 0) {
867
868 if ( request.negTokenInit.mechToken.data == NULL ) {
869 DEBUG(1, ("Client did not provide NTLMSSP data\n"));
870 x_fprintf(x_stdout, "BH\n");
871 return;
872 }
873
874 if ( ntlmssp_state != NULL ) {
875 DEBUG(1, ("Client wants a new NTLMSSP challenge, but "
876 "already got one\n"));
877 x_fprintf(x_stdout, "BH\n");
878 ntlmssp_end(&ntlmssp_state);
879 return;
880 }
881
882 if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
883 x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
884 return;
885 }
886
887 DEBUG(10, ("got NTLMSSP packet:\n"));
888 dump_data(10, (const char *)request.negTokenInit.mechToken.data,
889 request.negTokenInit.mechToken.length);
890
891 response.type = SPNEGO_NEG_TOKEN_TARG;
892 response.negTokenTarg.supportedMech = SMB_STRDUP(OID_NTLMSSP);
893 response.negTokenTarg.mechListMIC = data_blob(NULL, 0);
894
895 status = ntlmssp_update(ntlmssp_state,
896 request.negTokenInit.mechToken,
897 &response.negTokenTarg.responseToken);
898 }
899
900 #ifdef HAVE_KRB5
901 if (strcmp(request.negTokenInit.mechTypes[0], OID_KERBEROS5_OLD) == 0) {
902
903 TALLOC_CTX *mem_ctx = talloc_init("manage_gss_spnego_request");
904 char *principal;
905 DATA_BLOB ap_rep;
906 DATA_BLOB session_key;
907
908 if ( request.negTokenInit.mechToken.data == NULL ) {
909 DEBUG(1, ("Client did not provide Kerberos data\n"));
910 x_fprintf(x_stdout, "BH\n");
911 return;
912 }
913
914 response.type = SPNEGO_NEG_TOKEN_TARG;
915 response.negTokenTarg.supportedMech = SMB_STRDUP(OID_KERBEROS5_OLD);
916 response.negTokenTarg.mechListMIC = data_blob(NULL, 0);
917 response.negTokenTarg.responseToken = data_blob(NULL, 0);
918
919 status = ads_verify_ticket(mem_ctx, lp_realm(),
920 &request.negTokenInit.mechToken,
921 &principal, NULL, &ap_rep,
922 &session_key);
923
924 talloc_destroy(mem_ctx);
925
926 /* Now in "principal" we have the name we are
927 authenticated as. */
928
929 if (NT_STATUS_IS_OK(status)) {
930
931 domain = strchr_m(principal, '@');
932
933 if (domain == NULL) {
934 DEBUG(1, ("Did not get a valid principal "
935 "from ads_verify_ticket\n"));
936 x_fprintf(x_stdout, "BH\n");
937 return;
938 }
939
940 *domain++ = '\0';
941 domain = SMB_STRDUP(domain);
942 user = SMB_STRDUP(principal);
943
944 data_blob_free(&ap_rep);
945
946 SAFE_FREE(principal);
947 }
948 }
949 #endif
950
951 } else {
952
953 if ( (request.negTokenTarg.supportedMech == NULL) ||
954 ( strcmp(request.negTokenTarg.supportedMech, OID_NTLMSSP) != 0 ) ) {
955 /* Kerberos should never send a negTokenTarg, OID_NTLMSSP
956 is the only one we support that sends this stuff */
957 DEBUG(1, ("Got a negTokenTarg for something non-NTLMSSP: %s\n",
958 request.negTokenTarg.supportedMech));
959 x_fprintf(x_stdout, "BH\n");
960 return;
961 }
962
963 if (request.negTokenTarg.responseToken.data == NULL) {
964 DEBUG(1, ("Got a negTokenTarg without a responseToken!\n"));
965 x_fprintf(x_stdout, "BH\n");
966 return;
967 }
968
969 status = ntlmssp_update(ntlmssp_state,
970 request.negTokenTarg.responseToken,
971 &response.negTokenTarg.responseToken);
972
973 response.type = SPNEGO_NEG_TOKEN_TARG;
974 response.negTokenTarg.supportedMech = SMB_STRDUP(OID_NTLMSSP);
975 response.negTokenTarg.mechListMIC = data_blob(NULL, 0);
976
977 if (NT_STATUS_IS_OK(status)) {
978 user = SMB_STRDUP(ntlmssp_state->user);
979 domain = SMB_STRDUP(ntlmssp_state->domain);
980 ntlmssp_end(&ntlmssp_state);
981 }
982 }
983
984 free_spnego_data(&request);
985
986 if (NT_STATUS_IS_OK(status)) {
987 response.negTokenTarg.negResult = SPNEGO_ACCEPT_COMPLETED;
988 reply_code = "AF";
989 pstr_sprintf(reply_argument, "%s\\%s", domain, user);
990 } else if (NT_STATUS_EQUAL(status,
991 NT_STATUS_MORE_PROCESSING_REQUIRED)) {
992 response.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
993 reply_code = "TT";
994 pstr_sprintf(reply_argument, "*");
995 } else {
996 response.negTokenTarg.negResult = SPNEGO_REJECT;
997 reply_code = "NA";
998 pstrcpy(reply_argument, nt_errstr(status));
999 }
1000
1001 SAFE_FREE(user);
1002 SAFE_FREE(domain);
1003
1004 len = write_spnego_data(&token, &response);
1005 free_spnego_data(&response);
1006
1007 if (len == -1) {
1008 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1009 x_fprintf(x_stdout, "BH\n");
1010 return;
1011 }
1012
1013 reply_base64 = base64_encode_data_blob(token);
1014
1015 x_fprintf(x_stdout, "%s %s %s\n",
1016 reply_code, reply_base64, reply_argument);
1017
1018 SAFE_FREE(reply_base64);
1019 data_blob_free(&token);
1020
1021 return;
1022 }
1023
1024 static NTLMSSP_STATE *client_ntlmssp_state = NULL;
1025
1026 static BOOL manage_client_ntlmssp_init(SPNEGO_DATA spnego)
1027 {
1028 NTSTATUS status;
1029 DATA_BLOB null_blob = data_blob(NULL, 0);
1030 DATA_BLOB to_server;
1031 char *to_server_base64;
1032 const char *my_mechs[] = {OID_NTLMSSP, NULL};
1033
1034 DEBUG(10, ("Got spnego negTokenInit with NTLMSSP\n"));
1035
1036 if (client_ntlmssp_state != NULL) {
1037 DEBUG(1, ("Request for initial SPNEGO request where "
1038 "we already have a state\n"));
1039 return False;
1040 }
1041
1042 if (!client_ntlmssp_state) {
1043 if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_client(&client_ntlmssp_state))) {
1044 x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1045 return False;
1046 }
1047 }
1048
1049
1050 if (opt_password == NULL) {
1051
1052 /* Request a password from the calling process. After
1053 sending it, the calling process should retry with
1054 the negTokenInit. */
1055
1056 DEBUG(10, ("Requesting password\n"));
1057 x_fprintf(x_stdout, "PW\n");
1058 return True;
1059 }
1060
1061 spnego.type = SPNEGO_NEG_TOKEN_INIT;
1062 spnego.negTokenInit.mechTypes = my_mechs;
1063 spnego.negTokenInit.reqFlags = 0;
1064 spnego.negTokenInit.mechListMIC = null_blob;
1065
1066 status = ntlmssp_update(client_ntlmssp_state, null_blob,
1067 &spnego.negTokenInit.mechToken);
1068
1069 if ( !(NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) ||
1070 NT_STATUS_IS_OK(status)) ) {
1071 DEBUG(1, ("Expected OK or MORE_PROCESSING_REQUIRED, got: %s\n",
1072 nt_errstr(status)));
1073 ntlmssp_end(&client_ntlmssp_state);
1074 return False;
1075 }
1076
1077 write_spnego_data(&to_server, &spnego);
1078 data_blob_free(&spnego.negTokenInit.mechToken);
1079
1080 to_server_base64 = base64_encode_data_blob(to_server);
1081 data_blob_free(&to_server);
1082 x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1083 SAFE_FREE(to_server_base64);
1084 return True;
1085 }
1086
1087 static void manage_client_ntlmssp_targ(SPNEGO_DATA spnego)
1088 {
1089 NTSTATUS status;
1090 DATA_BLOB null_blob = data_blob(NULL, 0);
1091 DATA_BLOB request;
1092 DATA_BLOB to_server;
1093 char *to_server_base64;
1094
1095 DEBUG(10, ("Got spnego negTokenTarg with NTLMSSP\n"));
1096
1097 if (client_ntlmssp_state == NULL) {
1098 DEBUG(1, ("Got NTLMSSP tArg without a client state\n"));
1099 x_fprintf(x_stdout, "BH\n");
1100 ntlmssp_end(&client_ntlmssp_state);
1101 return;
1102 }
1103
1104 if (spnego.negTokenTarg.negResult == SPNEGO_REJECT) {
1105 x_fprintf(x_stdout, "NA\n");
1106 ntlmssp_end(&client_ntlmssp_state);
1107 return;
1108 }
1109
1110 if (spnego.negTokenTarg.negResult == SPNEGO_ACCEPT_COMPLETED) {
1111 x_fprintf(x_stdout, "AF\n");
1112 ntlmssp_end(&client_ntlmssp_state);
1113 return;
1114 }
1115
1116 status = ntlmssp_update(client_ntlmssp_state,
1117 spnego.negTokenTarg.responseToken,
1118 &request);
1119
1120 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1121 DEBUG(1, ("Expected MORE_PROCESSING_REQUIRED from "
1122 "ntlmssp_client_update, got: %s\n",
1123 nt_errstr(status)));
1124 x_fprintf(x_stdout, "BH\n");
1125 data_blob_free(&request);
1126 ntlmssp_end(&client_ntlmssp_state);
1127 return;
1128 }
1129
1130 spnego.type = SPNEGO_NEG_TOKEN_TARG;
1131 spnego.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1132 spnego.negTokenTarg.supportedMech = (char *)OID_NTLMSSP;
1133 spnego.negTokenTarg.responseToken = request;
1134 spnego.negTokenTarg.mechListMIC = null_blob;
1135
1136 write_spnego_data(&to_server, &spnego);
1137 data_blob_free(&request);
1138
1139 to_server_base64 = base64_encode_data_blob(to_server);
1140 data_blob_free(&to_server);
1141 x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1142 SAFE_FREE(to_server_base64);
1143 return;
1144 }
1145
1146 #ifdef HAVE_KRB5
1147
1148 static BOOL manage_client_krb5_init(SPNEGO_DATA spnego)
1149 {
1150 char *principal;
1151 DATA_BLOB tkt, to_server;
1152 DATA_BLOB session_key_krb5 = data_blob(NULL, 0);
1153 SPNEGO_DATA reply;
1154 char *reply_base64;
1155 int retval;
1156
1157 const char *my_mechs[] = {OID_KERBEROS5_OLD, NULL};
1158 ssize_t len;
1159
1160 if ( (spnego.negTokenInit.mechListMIC.data == NULL) ||
1161 (spnego.negTokenInit.mechListMIC.length == 0) ) {
1162 DEBUG(1, ("Did not get a principal for krb5\n"));
1163 return False;
1164 }
1165
1166 principal = SMB_MALLOC(spnego.negTokenInit.mechListMIC.length+1);
1167
1168 if (principal == NULL) {
1169 DEBUG(1, ("Could not malloc principal\n"));
1170 return False;
1171 }
1172
1173 memcpy(principal, spnego.negTokenInit.mechListMIC.data,
1174 spnego.negTokenInit.mechListMIC.length);
1175 principal[spnego.negTokenInit.mechListMIC.length] = '\0';
1176
1177 retval = cli_krb5_get_ticket(principal, 0, &tkt, &session_key_krb5, 0, NULL);
1178
1179 if (retval) {
1180
1181 pstring user;
1182
1183 /* Let's try to first get the TGT, for that we need a
1184 password. */
1185
1186 if (opt_password == NULL) {
1187 DEBUG(10, ("Requesting password\n"));
1188 x_fprintf(x_stdout, "PW\n");
1189 return True;
1190 }
1191
1192 pstr_sprintf(user, "%s@%s", opt_username, opt_domain);
1193
1194 if ((retval = kerberos_kinit_password(user, opt_password, 0, NULL))) {
1195 DEBUG(10, ("Requesting TGT failed: %s\n", error_message(retval)));
1196 return False;
1197 }
1198
1199 retval = cli_krb5_get_ticket(principal, 0, &tkt, &session_key_krb5, 0, NULL);
1200
1201 if (retval) {
1202 DEBUG(10, ("Kinit suceeded, but getting a ticket failed: %s\n", error_message(retval)));
1203 return False;
1204 }
1205 }
1206
1207 data_blob_free(&session_key_krb5);
1208
1209 ZERO_STRUCT(reply);
1210
1211 reply.type = SPNEGO_NEG_TOKEN_INIT;
1212 reply.negTokenInit.mechTypes = my_mechs;
1213 reply.negTokenInit.reqFlags = 0;
1214 reply.negTokenInit.mechToken = tkt;
1215 reply.negTokenInit.mechListMIC = data_blob(NULL, 0);
1216
1217 len = write_spnego_data(&to_server, &reply);
1218 data_blob_free(&tkt);
1219
1220 if (len == -1) {
1221 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1222 return False;
1223 }
1224
1225 reply_base64 = base64_encode_data_blob(to_server);
1226 x_fprintf(x_stdout, "KK %s *\n", reply_base64);
1227
1228 SAFE_FREE(reply_base64);
1229 data_blob_free(&to_server);
1230 DEBUG(10, ("sent GSS-SPNEGO KERBEROS5 negTokenInit\n"));
1231 return True;
1232 }
1233
1234 static void manage_client_krb5_targ(SPNEGO_DATA spnego)
1235 {
1236 switch (spnego.negTokenTarg.negResult) {
1237 case SPNEGO_ACCEPT_INCOMPLETE:
1238 DEBUG(1, ("Got a Kerberos negTokenTarg with ACCEPT_INCOMPLETE\n"));
1239 x_fprintf(x_stdout, "BH\n");
1240 break;
1241 case SPNEGO_ACCEPT_COMPLETED:
1242 DEBUG(10, ("Accept completed\n"));
1243 x_fprintf(x_stdout, "AF\n");
1244 break;
1245 case SPNEGO_REJECT:
1246 DEBUG(10, ("Rejected\n"));
1247 x_fprintf(x_stdout, "NA\n");
1248 break;
1249 default:
1250 DEBUG(1, ("Got an invalid negTokenTarg\n"));
1251 x_fprintf(x_stdout, "AF\n");
1252 }
1253 }
1254
1255 #endif
1256
1257 static void manage_gss_spnego_client_request(enum stdio_helper_mode stdio_helper_mode,
1258 char *buf, int length)
1259 {
1260 DATA_BLOB request;
1261 SPNEGO_DATA spnego;
1262 ssize_t len;
1263
1264 if (strlen(buf) <= 3) {
1265 DEBUG(1, ("SPNEGO query [%s] too short\n", buf));
1266 x_fprintf(x_stdout, "BH\n");
1267 return;
1268 }
1269
1270 request = base64_decode_data_blob(buf+3);
1271
1272 if (strncmp(buf, "PW ", 3) == 0) {
1273
1274 /* We asked for a password and obviously got it :-) */
1275
1276 opt_password = SMB_STRNDUP((const char *)request.data, request.length);
1277
1278 if (opt_password == NULL) {
1279 DEBUG(1, ("Out of memory\n"));
1280 x_fprintf(x_stdout, "BH\n");
1281 data_blob_free(&request);
1282 return;
1283 }
1284
1285 x_fprintf(x_stdout, "OK\n");
1286 data_blob_free(&request);
1287 return;
1288 }
1289
1290 if ( (strncmp(buf, "TT ", 3) != 0) &&
1291 (strncmp(buf, "AF ", 3) != 0) &&
1292 (strncmp(buf, "NA ", 3) != 0) ) {
1293 DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
1294 x_fprintf(x_stdout, "BH\n");
1295 data_blob_free(&request);
1296 return;
1297 }
1298
1299 /* So we got a server challenge to generate a SPNEGO
1300 client-to-server request... */
1301
1302 len = read_spnego_data(request, &spnego);
1303 data_blob_free(&request);
1304
1305 if (len == -1) {
1306 DEBUG(1, ("Could not read SPNEGO data for [%s]\n", buf));
1307 x_fprintf(x_stdout, "BH\n");
1308 return;
1309 }
1310
1311 if (spnego.type == SPNEGO_NEG_TOKEN_INIT) {
1312
1313 /* The server offers a list of mechanisms */
1314
1315 const char **mechType = (const char **)spnego.negTokenInit.mechTypes;
1316
1317 while (*mechType != NULL) {
1318
1319 #ifdef HAVE_KRB5
1320 if ( (strcmp(*mechType, OID_KERBEROS5_OLD) == 0) ||
1321 (strcmp(*mechType, OID_KERBEROS5) == 0) ) {
1322 if (manage_client_krb5_init(spnego))
1323 goto out;
1324 }
1325 #endif
1326
1327 if (strcmp(*mechType, OID_NTLMSSP) == 0) {
1328 if (manage_client_ntlmssp_init(spnego))
1329 goto out;
1330 }
1331
1332 mechType++;
1333 }
1334
1335 DEBUG(1, ("Server offered no compatible mechanism\n"));
1336 x_fprintf(x_stdout, "BH\n");
1337 return;
1338 }
1339
1340 if (spnego.type == SPNEGO_NEG_TOKEN_TARG) {
1341
1342 if (spnego.negTokenTarg.supportedMech == NULL) {
1343 /* On accept/reject Windows does not send the
1344 mechanism anymore. Handle that here and
1345 shut down the mechanisms. */
1346
1347 switch (spnego.negTokenTarg.negResult) {
1348 case SPNEGO_ACCEPT_COMPLETED:
1349 x_fprintf(x_stdout, "AF\n");
1350 break;
1351 case SPNEGO_REJECT:
1352 x_fprintf(x_stdout, "NA\n");
1353 break;
1354 default:
1355 DEBUG(1, ("Got a negTokenTarg with no mech and an "
1356 "unknown negResult: %d\n",
1357 spnego.negTokenTarg.negResult));
1358 x_fprintf(x_stdout, "BH\n");
1359 }
1360
1361 ntlmssp_end(&client_ntlmssp_state);
1362 goto out;
1363 }
1364
1365 if (strcmp(spnego.negTokenTarg.supportedMech,
1366 OID_NTLMSSP) == 0) {
1367 manage_client_ntlmssp_targ(spnego);
1368 goto out;
1369 }
1370
1371 #if HAVE_KRB5
1372 if (strcmp(spnego.negTokenTarg.supportedMech,
1373 OID_KERBEROS5_OLD) == 0) {
1374 manage_client_krb5_targ(spnego);
1375 goto out;
1376 }
1377 #endif
1378
1379 }
1380
1381 DEBUG(1, ("Got an SPNEGO token I could not handle [%s]!\n", buf));
1382 x_fprintf(x_stdout, "BH\n");
1383 return;
1384
1385 out:
1386 free_spnego_data(&spnego);
1387 return;
1388 }
1389
1390 static void manage_ntlm_server_1_request(enum stdio_helper_mode stdio_helper_mode,
1391 char *buf, int length)
1392 {
1393 char *request, *parameter;
1394 static DATA_BLOB challenge;
1395 static DATA_BLOB lm_response;
1396 static DATA_BLOB nt_response;
1397 static char *full_username;
1398 static char *username;
1399 static char *domain;
1400 static char *plaintext_password;
1401 static BOOL ntlm_server_1_user_session_key;
1402 static BOOL ntlm_server_1_lm_session_key;
1403
1404 if (strequal(buf, ".")) {
1405 if (!full_username && !username) {
1406 x_fprintf(x_stdout, "Error: No username supplied!\n");
1407 } else if (plaintext_password) {
1408 /* handle this request as plaintext */
1409 if (!full_username) {
1410 if (asprintf(&full_username, "%s%c%s", domain, winbind_separator(), username) == -1) {
1411 x_fprintf(x_stdout, "Error: Out of memory in asprintf!\n.\n");
1412 return;
1413 }
1414 }
1415 if (check_plaintext_auth(full_username, plaintext_password, False)) {
1416 x_fprintf(x_stdout, "Authenticated: Yes\n");
1417 } else {
1418 x_fprintf(x_stdout, "Authenticated: No\n");
1419 }
1420 } else if (!lm_response.data && !nt_response.data) {
1421 x_fprintf(x_stdout, "Error: No password supplied!\n");
1422 } else if (!challenge.data) {
1423 x_fprintf(x_stdout, "Error: No lanman-challenge supplied!\n");
1424 } else {
1425 char *error_string = NULL;
1426 uchar lm_key[8];
1427 uchar user_session_key[16];
1428 uint32 flags = 0;
1429
1430 if (full_username && !username) {
1431 fstring fstr_user;
1432 fstring fstr_domain;
1433
1434 if (!parse_ntlm_auth_domain_user(full_username, fstr_user, fstr_domain)) {
1435 /* username might be 'tainted', don't print into our new-line deleimianted stream */
1436 x_fprintf(x_stdout, "Error: Could not parse into domain and username\n");
1437 }
1438 SAFE_FREE(username);
1439 SAFE_FREE(domain);
1440 username = smb_xstrdup(fstr_user);
1441 domain = smb_xstrdup(fstr_domain);
1442 }
1443
1444 if (!domain) {
1445 domain = smb_xstrdup(get_winbind_domain());
1446 }
1447
1448 if (ntlm_server_1_lm_session_key)
1449 flags |= WBFLAG_PAM_LMKEY;
1450
1451 if (ntlm_server_1_user_session_key)
1452 flags |= WBFLAG_PAM_USER_SESSION_KEY;
1453
1454 if (!NT_STATUS_IS_OK(
1455 contact_winbind_auth_crap(username,
1456 domain,
1457 global_myname(),
1458 &challenge,
1459 &lm_response,
1460 &nt_response,
1461 flags,
1462 lm_key,
1463 user_session_key,
1464 &error_string,
1465 NULL))) {
1466
1467 x_fprintf(x_stdout, "Authenticated: No\n");
1468 x_fprintf(x_stdout, "Authentication-Error: %s\n.\n", error_string);
1469 SAFE_FREE(error_string);
1470 } else {
1471 static char zeros[16];
1472 char *hex_lm_key;
1473 char *hex_user_session_key;
1474
1475 x_fprintf(x_stdout, "Authenticated: Yes\n");
1476
1477 if (ntlm_server_1_lm_session_key
1478 && (memcmp(zeros, lm_key,
1479 sizeof(lm_key)) != 0)) {
1480 hex_lm_key = hex_encode(NULL,
1481 (const unsigned char *)lm_key,
1482 sizeof(lm_key));
1483 x_fprintf(x_stdout, "LANMAN-Session-Key: %s\n", hex_lm_key);
1484 TALLOC_FREE(hex_lm_key);
1485 }
1486
1487 if (ntlm_server_1_user_session_key
1488 && (memcmp(zeros, user_session_key,
1489 sizeof(user_session_key)) != 0)) {
1490 hex_user_session_key = hex_encode(NULL,
1491 (const unsigned char *)user_session_key,
1492 sizeof(user_session_key));
1493 x_fprintf(x_stdout, "User-Session-Key: %s\n", hex_user_session_key);
1494 TALLOC_FREE(hex_user_session_key);
1495 }
1496 }
1497 }
1498 /* clear out the state */
1499 challenge = data_blob(NULL, 0);
1500 nt_response = data_blob(NULL, 0);
1501 lm_response = data_blob(NULL, 0);
1502 SAFE_FREE(full_username);
1503 SAFE_FREE(username);
1504 SAFE_FREE(domain);
1505 SAFE_FREE(plaintext_password);
1506 ntlm_server_1_user_session_key = False;
1507 ntlm_server_1_lm_session_key = False;
1508 x_fprintf(x_stdout, ".\n");
1509
1510 return;
1511 }
1512
1513 request = buf;
1514
1515 /* Indicates a base64 encoded structure */
1516 parameter = strstr_m(request, ":: ");
1517 if (!parameter) {
1518 parameter = strstr_m(request, ": ");
1519
1520 if (!parameter) {
1521 DEBUG(0, ("Parameter not found!\n"));
1522 x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
1523 return;
1524 }
1525
1526 parameter[0] ='\0';
1527 parameter++;
1528 parameter[0] ='\0';
1529 parameter++;
1530
1531 } else {
1532 parameter[0] ='\0';
1533 parameter++;
1534 parameter[0] ='\0';
1535 parameter++;
1536 parameter[0] ='\0';
1537 parameter++;
1538
1539 base64_decode_inplace(parameter);
1540 }
1541
1542 if (strequal(request, "LANMAN-Challenge")) {
1543 challenge = strhex_to_data_blob(NULL, parameter);
1544 if (challenge.length != 8) {
1545 x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 8)\n.\n",
1546 parameter,
1547 (int)challenge.length);
1548 challenge = data_blob(NULL, 0);
1549 }
1550 } else if (strequal(request, "NT-Response")) {
1551 nt_response = strhex_to_data_blob(NULL, parameter);
1552 if (nt_response.length < 24) {
1553 x_fprintf(x_stdout, "Error: hex decode of %s failed! (only got %d bytes, needed at least 24)\n.\n",
1554 parameter,
1555 (int)nt_response.length);
1556 nt_response = data_blob(NULL, 0);
1557 }
1558 } else if (strequal(request, "LANMAN-Response")) {
1559 lm_response = strhex_to_data_blob(NULL, parameter);
1560 if (lm_response.length != 24) {
1561 x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 24)\n.\n",
1562 parameter,
1563 (int)lm_response.length);
1564 lm_response = data_blob(NULL, 0);
1565 }
1566 } else if (strequal(request, "Password")) {
1567 plaintext_password = smb_xstrdup(parameter);
1568 } else if (strequal(request, "NT-Domain")) {
1569 domain = smb_xstrdup(parameter);
1570 } else if (strequal(request, "Username")) {
1571 username = smb_xstrdup(parameter);
1572 } else if (strequal(request, "Full-Username")) {
1573 full_username = smb_xstrdup(parameter);
1574 } else if (strequal(request, "Request-User-Session-Key")) {
1575 ntlm_server_1_user_session_key = strequal(parameter, "Yes");
1576 } else if (strequal(request, "Request-LanMan-Session-Key")) {
1577 ntlm_server_1_lm_session_key = strequal(parameter, "Yes");
1578 } else {
1579 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
1580 }
1581 }
1582
1583 static void manage_squid_request(enum stdio_helper_mode helper_mode, stdio_helper_function fn)
1584 {
1585 char buf[SQUID_BUFFER_SIZE+1];
1586 int length;
1587 char *c;
1588 static BOOL err;
1589
1590 /* this is not a typo - x_fgets doesn't work too well under squid */
1591 if (fgets(buf, sizeof(buf)-1, stdin) == NULL) {
1592 if (ferror(stdin)) {
1593 DEBUG(1, ("fgets() failed! dying..... errno=%d (%s)\n", ferror(stdin),
1594 strerror(ferror(stdin))));
1595
1596 exit(1); /* BIIG buffer */
1597 }
1598 exit(0);
1599 }
1600
1601 c=memchr(buf,'\n',sizeof(buf)-1);
1602 if (c) {
1603 *c = '\0';
1604 length = c-buf;
1605 } else {
1606 err = 1;
1607 return;
1608 }
1609 if (err) {
1610 DEBUG(2, ("Oversized message\n"));
1611 x_fprintf(x_stderr, "ERR\n");
1612 err = 0;
1613 return;
1614 }
1615
1616 DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
1617
1618 if (buf[0] == '\0') {
1619 DEBUG(2, ("Invalid Request\n"));
1620 x_fprintf(x_stderr, "ERR\n");
1621 return;
1622 }
1623
1624 fn(helper_mode, buf, length);
1625 }
1626
1627
1628 static void squid_stream(enum stdio_helper_mode stdio_mode, stdio_helper_function fn) {
1629 /* initialize FDescs */
1630 x_setbuf(x_stdout, NULL);
1631 x_setbuf(x_stderr, NULL);
1632 while(1) {
1633 manage_squid_request(stdio_mode, fn);
1634 }
1635 }
1636
1637
1638 /* Authenticate a user with a challenge/response */
1639
1640 static BOOL check_auth_crap(void)
1641 {
1642 NTSTATUS nt_status;
1643 uint32 flags = 0;
1644 char lm_key[8];
1645 char user_session_key[16];
1646 char *hex_lm_key;
1647 char *hex_user_session_key;
1648 char *error_string;
1649 static uint8 zeros[16];
1650
1651 x_setbuf(x_stdout, NULL);
1652
1653 if (request_lm_key)
1654 flags |= WBFLAG_PAM_LMKEY;
1655
1656 if (request_user_session_key)
1657 flags |= WBFLAG_PAM_USER_SESSION_KEY;
1658
1659 flags |= WBFLAG_PAM_NT_STATUS_SQUASH;
1660
1661 nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
1662 opt_workstation,
1663 &opt_challenge,
1664 &opt_lm_response,
1665 &opt_nt_response,
1666 flags,
1667 (unsigned char *)lm_key,
1668 (unsigned char *)user_session_key,
1669 &error_string, NULL);
1670
1671 if (!NT_STATUS_IS_OK(nt_status)) {
1672 x_fprintf(x_stdout, "%s (0x%x)\n",
1673 error_string,
1674 NT_STATUS_V(nt_status));
1675 SAFE_FREE(error_string);
1676 return False;
1677 }
1678
1679 if (request_lm_key
1680 && (memcmp(zeros, lm_key,
1681 sizeof(lm_key)) != 0)) {
1682 hex_lm_key = hex_encode(NULL, (const unsigned char *)lm_key,
1683 sizeof(lm_key));
1684 x_fprintf(x_stdout, "LM_KEY: %s\n", hex_lm_key);
1685 TALLOC_FREE(hex_lm_key);
1686 }
1687 if (request_user_session_key
1688 && (memcmp(zeros, user_session_key,
1689 sizeof(user_session_key)) != 0)) {
1690 hex_user_session_key = hex_encode(NULL, (const unsigned char *)user_session_key,
1691 sizeof(user_session_key));
1692 x_fprintf(x_stdout, "NT_KEY: %s\n", hex_user_session_key);
1693 TALLOC_FREE(hex_user_session_key);
1694 }
1695
1696 return True;
1697 }
1698
1699 /* Main program */
1700
1701 enum {
1702 OPT_USERNAME = 1000,
1703 OPT_DOMAIN,
1704 OPT_WORKSTATION,
1705 OPT_CHALLENGE,
1706 OPT_RESPONSE,
1707 OPT_LM,
1708 OPT_NT,
1709 OPT_PASSWORD,
1710 OPT_LM_KEY,
1711 OPT_USER_SESSION_KEY,
1712 OPT_DIAGNOSTICS,
1713 OPT_REQUIRE_MEMBERSHIP
1714 };
1715
1716 int main(int argc, const char **argv)
1717 {
1718 int opt;
1719 static const char *helper_protocol;
1720 static int diagnostics;
1721
1722 static const char *hex_challenge;
1723 static const char *hex_lm_response;
1724 static const char *hex_nt_response;
1725
1726 poptContext pc;
1727
1728 /* NOTE: DO NOT change this interface without considering the implications!
1729 This is an external interface, which other programs will use to interact
1730 with this helper.
1731 */
1732
1733 /* We do not use single-letter command abbreviations, because they harm future
1734 interface stability. */
1735
1736 struct poptOption long_options[] = {
1737 POPT_AUTOHELP
1738 { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
1739 { "username", 0, POPT_ARG_STRING, &opt_username, OPT_USERNAME, "username"},
1740 { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
1741 { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
1742 { "challenge", 0, POPT_ARG_STRING, &hex_challenge, OPT_CHALLENGE, "challenge (HEX encoded)"},
1743 { "lm-response", 0, POPT_ARG_STRING, &hex_lm_response, OPT_LM, "LM Response to the challenge (HEX encoded)"},
1744 { "nt-response", 0, POPT_ARG_STRING, &hex_nt_response, OPT_NT, "NT or NTLMv2 Response to the challenge (HEX encoded)"},
1745 { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
1746 { "request-lm-key", 0, POPT_ARG_NONE, &request_lm_key, OPT_LM_KEY, "Retrieve LM session key"},
1747 { "request-nt-key", 0, POPT_ARG_NONE, &request_user_session_key, OPT_USER_SESSION_KEY, "Retrieve User (NT) session key"},
1748 { "diagnostics", 0, POPT_ARG_NONE, &diagnostics, OPT_DIAGNOSTICS, "Perform diagnostics on the authentictaion chain"},
1749 { "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" },
1750 POPT_COMMON_SAMBA
1751 POPT_TABLEEND
1752 };
1753
1754 /* Samba client initialisation */
1755 load_case_tables();
1756
1757 dbf = x_stderr;
1758
1759 /* Samba client initialisation */
1760
1761 if (!lp_load(dyn_CONFIGFILE, True, False, False, True)) {
1762 d_fprintf(stderr, "ntlm_auth: error opening config file %s. Error was %s\n",
1763 dyn_CONFIGFILE, strerror(errno));
1764 exit(1);
1765 }
1766
1767 /* Parse options */
1768
1769 pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
1770
1771 /* Parse command line options */
1772
1773 if (argc == 1) {
1774 poptPrintHelp(pc, stderr, 0);
1775 return 1;
1776 }
1777
1778 pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
1779 POPT_CONTEXT_KEEP_FIRST);
1780
1781 while((opt = poptGetNextOpt(pc)) != -1) {
1782 switch (opt) {
1783 case OPT_CHALLENGE:
1784 opt_challenge = strhex_to_data_blob(NULL, hex_challenge);
1785 if (opt_challenge.length != 8) {
1786 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
1787 hex_challenge,
1788 (int)opt_challenge.length);
1789 exit(1);
1790 }
1791 break;
1792 case OPT_LM:
1793 opt_lm_response = strhex_to_data_blob(NULL, hex_lm_response);
1794 if (opt_lm_response.length != 24) {
1795 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
1796 hex_lm_response,
1797 (int)opt_lm_response.length);
1798 exit(1);
1799 }
1800 break;
1801
1802 case OPT_NT:
1803 opt_nt_response = strhex_to_data_blob(NULL, hex_nt_response);
1804 if (opt_nt_response.length < 24) {
1805 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
1806 hex_nt_response,
1807 (int)opt_nt_response.length);
1808 exit(1);
1809 }
1810 break;
1811
1812 case OPT_REQUIRE_MEMBERSHIP:
1813 if (StrnCaseCmp("S-", require_membership_of, 2) == 0) {
1814 require_membership_of_sid = require_membership_of;
1815 }
1816 break;
1817 }
1818 }
1819
1820 if (helper_protocol) {
1821 int i;
1822 for (i=0; i<NUM_HELPER_MODES; i++) {
1823 if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
1824 squid_stream(stdio_helper_protocols[i].mode, stdio_helper_protocols[i].fn);
1825 exit(0);
1826 }
1827 }
1828 x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol);
1829
1830 for (i=0; i<NUM_HELPER_MODES; i++) {
1831 x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name);
1832 }
1833
1834 exit(1);
1835 }
1836
1837 if (!opt_username) {
1838 x_fprintf(x_stderr, "username must be specified!\n\n");
1839 poptPrintHelp(pc, stderr, 0);
1840 exit(1);
1841 }
1842
1843 if (opt_domain == NULL) {
1844 opt_domain = get_winbind_domain();
1845 }
1846
1847 if (opt_workstation == NULL) {
1848 opt_workstation = "";
1849 }
1850
1851 if (opt_challenge.length) {
1852 if (!check_auth_crap()) {
1853 exit(1);
1854 }
1855 exit(0);
1856 }
1857
1858 if (!opt_password) {
1859 opt_password = getpass("password: ");
1860 }
1861
1862 if (diagnostics) {
1863 if (!diagnose_ntlm_auth()) {
1864 return 1;
1865 }
1866 } else {
1867 fstring user;
1868
1869 fstr_sprintf(user, "%s%c%s", opt_domain, winbind_separator(), opt_username);
1870 if (!check_plaintext_auth(user, opt_password, True)) {
1871 return 1;
1872 }
1873 }
1874
1875 /* Exit code */
1876
1877 poptFreeContext(pc);
1878 return 0;
1879 }
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