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s3: Update waf build to include missed dependancy on Lion.
[Samba/gebeck_regimport.git] / source3 / utils / ntlm_auth.c
blob6fc772e67cc32e5eb49f6691a65dbf634ef6b2fa
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 "lib/param/param.h"
28 #include "popt_common.h"
29 #include "utils/ntlm_auth.h"
30 #include "../libcli/auth/libcli_auth.h"
31 #include "../libcli/auth/spnego.h"
32 #include "auth/ntlmssp/ntlmssp.h"
33 #include "auth/gensec/gensec.h"
34 #include "auth/credentials/credentials.h"
35 #include "librpc/crypto/gse.h"
36 #include "smb_krb5.h"
37 #include <iniparser.h>
38 #include "../lib/crypto/arcfour.h"
39 #include "libads/kerberos_proto.h"
40 #include "nsswitch/winbind_client.h"
41 #include "librpc/gen_ndr/krb5pac.h"
42 #include "../lib/util/asn1.h"
43 #include "auth/common_auth.h"
44
45 #ifndef PAM_WINBIND_CONFIG_FILE
46 #define PAM_WINBIND_CONFIG_FILE "/etc/security/pam_winbind.conf"
47 #endif
48
49 #define WINBIND_KRB5_AUTH 0x00000080
50
51 #undef DBGC_CLASS
52 #define DBGC_CLASS DBGC_WINBIND
53
54 #define INITIAL_BUFFER_SIZE 300
55 #define MAX_BUFFER_SIZE 630000
56
57 enum stdio_helper_mode {
58 SQUID_2_4_BASIC,
59 SQUID_2_5_BASIC,
60 SQUID_2_5_NTLMSSP,
61 NTLMSSP_CLIENT_1,
62 GSS_SPNEGO,
63 GSS_SPNEGO_CLIENT,
64 NTLM_SERVER_1,
65 NTLM_CHANGE_PASSWORD_1,
66 NUM_HELPER_MODES
67 };
68
69 enum ntlm_auth_cli_state {
70 CLIENT_INITIAL = 0,
71 CLIENT_RESPONSE,
72 CLIENT_FINISHED,
73 CLIENT_ERROR
74 };
75
76 enum ntlm_auth_svr_state {
77 SERVER_INITIAL = 0,
78 SERVER_CHALLENGE,
79 SERVER_FINISHED,
80 SERVER_ERROR
81 };
82
83 struct ntlm_auth_state {
84 TALLOC_CTX *mem_ctx;
85 enum stdio_helper_mode helper_mode;
86 enum ntlm_auth_cli_state cli_state;
87 enum ntlm_auth_svr_state svr_state;
88 struct ntlmssp_state *ntlmssp_state;
89 struct gensec_security *gensec_security;
90 uint32_t neg_flags;
91 char *want_feature_list;
92 char *spnego_mech;
93 char *spnego_mech_oid;
94 bool have_session_key;
95 DATA_BLOB session_key;
96 DATA_BLOB initial_message;
97 };
98
99 typedef void (*stdio_helper_function)(struct ntlm_auth_state *state, char *buf,
100 int length);
101
102 static void manage_squid_basic_request (struct ntlm_auth_state *state,
103 char *buf, int length);
104
105 static void manage_squid_ntlmssp_request (struct ntlm_auth_state *state,
106 char *buf, int length);
107
108 static void manage_client_ntlmssp_request (struct ntlm_auth_state *state,
109 char *buf, int length);
110
111 static void manage_gss_spnego_request (struct ntlm_auth_state *state,
112 char *buf, int length);
113
114 static void manage_gss_spnego_client_request (struct ntlm_auth_state *state,
115 char *buf, int length);
116
117 static void manage_ntlm_server_1_request (struct ntlm_auth_state *state,
118 char *buf, int length);
119
120 static void manage_ntlm_change_password_1_request(struct ntlm_auth_state *state,
121 char *buf, int length);
122
123 static const struct {
124 enum stdio_helper_mode mode;
125 const char *name;
126 stdio_helper_function fn;
127 } stdio_helper_protocols[] = {
128 { SQUID_2_4_BASIC, "squid-2.4-basic", manage_squid_basic_request},
129 { SQUID_2_5_BASIC, "squid-2.5-basic", manage_squid_basic_request},
130 { SQUID_2_5_NTLMSSP, "squid-2.5-ntlmssp", manage_squid_ntlmssp_request},
131 { NTLMSSP_CLIENT_1, "ntlmssp-client-1", manage_client_ntlmssp_request},
132 { GSS_SPNEGO, "gss-spnego", manage_gss_spnego_request},
133 { GSS_SPNEGO_CLIENT, "gss-spnego-client", manage_gss_spnego_client_request},
134 { NTLM_SERVER_1, "ntlm-server-1", manage_ntlm_server_1_request},
135 { NTLM_CHANGE_PASSWORD_1, "ntlm-change-password-1", manage_ntlm_change_password_1_request},
136 { NUM_HELPER_MODES, NULL, NULL}
137 };
138
139 const char *opt_username;
140 const char *opt_domain;
141 const char *opt_workstation;
142 const char *opt_password;
143 static DATA_BLOB opt_challenge;
144 static DATA_BLOB opt_lm_response;
145 static DATA_BLOB opt_nt_response;
146 static int request_lm_key;
147 static int request_user_session_key;
148 static int use_cached_creds;
149
150 static const char *require_membership_of;
151 static const char *require_membership_of_sid;
152 static const char *opt_pam_winbind_conf;
153
154 const char *opt_target_service;
155 const char *opt_target_hostname;
156
157 /**
158 * A limited set of features are defined with text strings as needed
159 * by ntlm_auth
160 *
161 */
162 static void gensec_want_feature_list(struct gensec_security *state, char* feature_list)
163 {
164 if (in_list("NTLMSSP_FEATURE_SESSION_KEY", feature_list, true)) {
165 DEBUG(10, ("want GENSEC_FEATURE_SESSION_KEY\n"));
166 gensec_want_feature(state, GENSEC_FEATURE_SESSION_KEY);
167 }
168 if (in_list("NTLMSSP_FEATURE_SIGN", feature_list, true)) {
169 DEBUG(10, ("want GENSEC_FEATURE_SIGN\n"));
170 gensec_want_feature(state, GENSEC_FEATURE_SIGN);
171 }
172 if (in_list("NTLMSSP_FEATURE_SEAL", feature_list, true)) {
173 DEBUG(10, ("want GENSEC_FEATURE_SEAL\n"));
174 gensec_want_feature(state, GENSEC_FEATURE_SEAL);
175 }
176 }
177
178 static char winbind_separator(void)
179 {
180 struct winbindd_response response;
181 static bool got_sep;
182 static char sep;
183
184 if (got_sep)
185 return sep;
186
187 ZERO_STRUCT(response);
188
189 /* Send off request */
190
191 if (winbindd_request_response(WINBINDD_INFO, NULL, &response) !=
192 NSS_STATUS_SUCCESS) {
193 d_printf("could not obtain winbind separator!\n");
194 return *lp_winbind_separator();
195 }
196
197 sep = response.data.info.winbind_separator;
198 got_sep = True;
199
200 if (!sep) {
201 d_printf("winbind separator was NULL!\n");
202 return *lp_winbind_separator();
203 }
204
205 return sep;
206 }
207
208 const char *get_winbind_domain(void)
209 {
210 struct winbindd_response response;
211
212 static fstring winbind_domain;
213 if (*winbind_domain) {
214 return winbind_domain;
215 }
216
217 ZERO_STRUCT(response);
218
219 /* Send off request */
220
221 if (winbindd_request_response(WINBINDD_DOMAIN_NAME, NULL, &response) !=
222 NSS_STATUS_SUCCESS) {
223 DEBUG(0, ("could not obtain winbind domain name!\n"));
224 return lp_workgroup();
225 }
226
227 fstrcpy(winbind_domain, response.data.domain_name);
228
229 return winbind_domain;
230
231 }
232
233 const char *get_winbind_netbios_name(void)
234 {
235 struct winbindd_response response;
236
237 static fstring winbind_netbios_name;
238
239 if (*winbind_netbios_name) {
240 return winbind_netbios_name;
241 }
242
243 ZERO_STRUCT(response);
244
245 /* Send off request */
246
247 if (winbindd_request_response(WINBINDD_NETBIOS_NAME, NULL, &response) !=
248 NSS_STATUS_SUCCESS) {
249 DEBUG(0, ("could not obtain winbind netbios name!\n"));
250 return lp_netbios_name();
251 }
252
253 fstrcpy(winbind_netbios_name, response.data.netbios_name);
254
255 return winbind_netbios_name;
256
257 }
258
259 DATA_BLOB get_challenge(void)
260 {
261 static DATA_BLOB chal;
262 if (opt_challenge.length)
263 return opt_challenge;
264
265 chal = data_blob(NULL, 8);
266
267 generate_random_buffer(chal.data, chal.length);
268 return chal;
269 }
270
271 /* Copy of parse_domain_user from winbindd_util.c. Parse a string of the
272 form DOMAIN/user into a domain and a user */
273
274 static bool parse_ntlm_auth_domain_user(const char *domuser, fstring domain,
275 fstring user)
276 {
277
278 char *p = strchr(domuser,winbind_separator());
279
280 if (!p) {
281 return False;
282 }
283
284 fstrcpy(user, p+1);
285 fstrcpy(domain, domuser);
286 domain[PTR_DIFF(p, domuser)] = 0;
287 strupper_m(domain);
288
289 return True;
290 }
291
292 static bool get_require_membership_sid(void) {
293 struct winbindd_request request;
294 struct winbindd_response response;
295
296 if (!require_membership_of) {
297 return True;
298 }
299
300 if (require_membership_of_sid) {
301 return True;
302 }
303
304 /* Otherwise, ask winbindd for the name->sid request */
305
306 ZERO_STRUCT(request);
307 ZERO_STRUCT(response);
308
309 if (!parse_ntlm_auth_domain_user(require_membership_of,
310 request.data.name.dom_name,
311 request.data.name.name)) {
312 DEBUG(0, ("Could not parse %s into seperate domain/name parts!\n",
313 require_membership_of));
314 return False;
315 }
316
317 if (winbindd_request_response(WINBINDD_LOOKUPNAME, &request, &response) !=
318 NSS_STATUS_SUCCESS) {
319 DEBUG(0, ("Winbindd lookupname failed to resolve %s into a SID!\n",
320 require_membership_of));
321 return False;
322 }
323
324 require_membership_of_sid = SMB_STRDUP(response.data.sid.sid);
325
326 if (require_membership_of_sid)
327 return True;
328
329 return False;
330 }
331
332 /*
333 * Get some configuration from pam_winbind.conf to see if we
334 * need to contact trusted domain
335 */
336
337 int get_pam_winbind_config()
338 {
339 int ctrl = 0;
340 dictionary *d = NULL;
341
342 if (!opt_pam_winbind_conf || !*opt_pam_winbind_conf) {
343 opt_pam_winbind_conf = PAM_WINBIND_CONFIG_FILE;
344 }
345
346 d = iniparser_load(discard_const_p(char, opt_pam_winbind_conf));
347
348 if (!d) {
349 return 0;
350 }
351
352 if (iniparser_getboolean(d, discard_const_p(char, "global:krb5_auth"), false)) {
353 ctrl |= WINBIND_KRB5_AUTH;
354 }
355
356 iniparser_freedict(d);
357
358 return ctrl;
359 }
360
361 /* Authenticate a user with a plaintext password */
362
363 static bool check_plaintext_auth(const char *user, const char *pass,
364 bool stdout_diagnostics)
365 {
366 struct winbindd_request request;
367 struct winbindd_response response;
368 NSS_STATUS result;
369
370 if (!get_require_membership_sid()) {
371 return False;
372 }
373
374 /* Send off request */
375
376 ZERO_STRUCT(request);
377 ZERO_STRUCT(response);
378
379 fstrcpy(request.data.auth.user, user);
380 fstrcpy(request.data.auth.pass, pass);
381 if (require_membership_of_sid) {
382 strlcpy(request.data.auth.require_membership_of_sid,
383 require_membership_of_sid,
384 sizeof(request.data.auth.require_membership_of_sid));
385 }
386
387 result = winbindd_request_response(WINBINDD_PAM_AUTH, &request, &response);
388
389 /* Display response */
390
391 if (stdout_diagnostics) {
392 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
393 d_printf("Reading winbind reply failed! (0x01)\n");
394 }
395
396 d_printf("%s: %s (0x%x)\n",
397 response.data.auth.nt_status_string,
398 response.data.auth.error_string,
399 response.data.auth.nt_status);
400 } else {
401 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
402 DEBUG(1, ("Reading winbind reply failed! (0x01)\n"));
403 }
404
405 DEBUG(3, ("%s: %s (0x%x)\n",
406 response.data.auth.nt_status_string,
407 response.data.auth.error_string,
408 response.data.auth.nt_status));
409 }
410
411 return (result == NSS_STATUS_SUCCESS);
412 }
413
414 /* authenticate a user with an encrypted username/password */
415
416 NTSTATUS contact_winbind_auth_crap(const char *username,
417 const char *domain,
418 const char *workstation,
419 const DATA_BLOB *challenge,
420 const DATA_BLOB *lm_response,
421 const DATA_BLOB *nt_response,
422 uint32 flags,
423 uint32 extra_logon_parameters,
424 uint8 lm_key[8],
425 uint8 user_session_key[16],
426 char **error_string,
427 char **unix_name)
428 {
429 NTSTATUS nt_status;
430 NSS_STATUS result;
431 struct winbindd_request request;
432 struct winbindd_response response;
433
434 if (!get_require_membership_sid()) {
435 return NT_STATUS_INVALID_PARAMETER;
436 }
437
438 ZERO_STRUCT(request);
439 ZERO_STRUCT(response);
440
441 request.flags = flags;
442
443 request.data.auth_crap.logon_parameters = extra_logon_parameters
444 | MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT | MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT;
445
446 if (require_membership_of_sid)
447 fstrcpy(request.data.auth_crap.require_membership_of_sid, require_membership_of_sid);
448
449 fstrcpy(request.data.auth_crap.user, username);
450 fstrcpy(request.data.auth_crap.domain, domain);
451
452 fstrcpy(request.data.auth_crap.workstation,
453 workstation);
454
455 memcpy(request.data.auth_crap.chal, challenge->data, MIN(challenge->length, 8));
456
457 if (lm_response && lm_response->length) {
458 memcpy(request.data.auth_crap.lm_resp,
459 lm_response->data,
460 MIN(lm_response->length, sizeof(request.data.auth_crap.lm_resp)));
461 request.data.auth_crap.lm_resp_len = lm_response->length;
462 }
463
464 if (nt_response && nt_response->length) {
465 if (nt_response->length > sizeof(request.data.auth_crap.nt_resp)) {
466 request.flags = request.flags | WBFLAG_BIG_NTLMV2_BLOB;
467 request.extra_len = nt_response->length;
468 request.extra_data.data = SMB_MALLOC_ARRAY(char, request.extra_len);
469 if (request.extra_data.data == NULL) {
470 return NT_STATUS_NO_MEMORY;
471 }
472 memcpy(request.extra_data.data, nt_response->data,
473 nt_response->length);
474
475 } else {
476 memcpy(request.data.auth_crap.nt_resp,
477 nt_response->data, nt_response->length);
478 }
479 request.data.auth_crap.nt_resp_len = nt_response->length;
480 }
481
482 result = winbindd_request_response(WINBINDD_PAM_AUTH_CRAP, &request, &response);
483 SAFE_FREE(request.extra_data.data);
484
485 /* Display response */
486
487 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
488 nt_status = NT_STATUS_UNSUCCESSFUL;
489 if (error_string)
490 *error_string = smb_xstrdup("Reading winbind reply failed!");
491 winbindd_free_response(&response);
492 return nt_status;
493 }
494
495 nt_status = (NT_STATUS(response.data.auth.nt_status));
496 if (!NT_STATUS_IS_OK(nt_status)) {
497 if (error_string)
498 *error_string = smb_xstrdup(response.data.auth.error_string);
499 winbindd_free_response(&response);
500 return nt_status;
501 }
502
503 if ((flags & WBFLAG_PAM_LMKEY) && lm_key) {
504 memcpy(lm_key, response.data.auth.first_8_lm_hash,
505 sizeof(response.data.auth.first_8_lm_hash));
506 }
507 if ((flags & WBFLAG_PAM_USER_SESSION_KEY) && user_session_key) {
508 memcpy(user_session_key, response.data.auth.user_session_key,
509 sizeof(response.data.auth.user_session_key));
510 }
511
512 if (flags & WBFLAG_PAM_UNIX_NAME) {
513 *unix_name = SMB_STRDUP(response.data.auth.unix_username);
514 if (!*unix_name) {
515 winbindd_free_response(&response);
516 return NT_STATUS_NO_MEMORY;
517 }
518 }
519
520 winbindd_free_response(&response);
521 return nt_status;
522 }
523
524 /* contact server to change user password using auth crap */
525 static NTSTATUS contact_winbind_change_pswd_auth_crap(const char *username,
526 const char *domain,
527 const DATA_BLOB new_nt_pswd,
528 const DATA_BLOB old_nt_hash_enc,
529 const DATA_BLOB new_lm_pswd,
530 const DATA_BLOB old_lm_hash_enc,
531 char **error_string)
532 {
533 NTSTATUS nt_status;
534 NSS_STATUS result;
535 struct winbindd_request request;
536 struct winbindd_response response;
537
538 if (!get_require_membership_sid())
539 {
540 if(error_string)
541 *error_string = smb_xstrdup("Can't get membership sid.");
542 return NT_STATUS_INVALID_PARAMETER;
543 }
544
545 ZERO_STRUCT(request);
546 ZERO_STRUCT(response);
547
548 if(username != NULL)
549 fstrcpy(request.data.chng_pswd_auth_crap.user, username);
550 if(domain != NULL)
551 fstrcpy(request.data.chng_pswd_auth_crap.domain,domain);
552
553 if(new_nt_pswd.length)
554 {
555 memcpy(request.data.chng_pswd_auth_crap.new_nt_pswd, new_nt_pswd.data, sizeof(request.data.chng_pswd_auth_crap.new_nt_pswd));
556 request.data.chng_pswd_auth_crap.new_nt_pswd_len = new_nt_pswd.length;
557 }
558
559 if(old_nt_hash_enc.length)
560 {
561 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));
562 request.data.chng_pswd_auth_crap.old_nt_hash_enc_len = old_nt_hash_enc.length;
563 }
564
565 if(new_lm_pswd.length)
566 {
567 memcpy(request.data.chng_pswd_auth_crap.new_lm_pswd, new_lm_pswd.data, sizeof(request.data.chng_pswd_auth_crap.new_lm_pswd));
568 request.data.chng_pswd_auth_crap.new_lm_pswd_len = new_lm_pswd.length;
569 }
570
571 if(old_lm_hash_enc.length)
572 {
573 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));
574 request.data.chng_pswd_auth_crap.old_lm_hash_enc_len = old_lm_hash_enc.length;
575 }
576
577 result = winbindd_request_response(WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, &request, &response);
578
579 /* Display response */
580
581 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0))
582 {
583 nt_status = NT_STATUS_UNSUCCESSFUL;
584 if (error_string)
585 *error_string = smb_xstrdup("Reading winbind reply failed!");
586 winbindd_free_response(&response);
587 return nt_status;
588 }
589
590 nt_status = (NT_STATUS(response.data.auth.nt_status));
591 if (!NT_STATUS_IS_OK(nt_status))
592 {
593 if (error_string)
594 *error_string = smb_xstrdup(response.data.auth.error_string);
595 winbindd_free_response(&response);
596 return nt_status;
597 }
598
599 winbindd_free_response(&response);
600
601 return nt_status;
602 }
603
604 static NTSTATUS ntlm_auth_generate_session_info(struct auth4_context *auth_context,
605 TALLOC_CTX *mem_ctx,
606 void *server_returned_info,
607 const char *original_user_name,
608 uint32_t session_info_flags,
609 struct auth_session_info **session_info_out)
610 {
611 char *unix_username = (char *)server_returned_info;
612 struct auth_session_info *session_info = talloc_zero(mem_ctx, struct auth_session_info);
613 if (!session_info) {
614 return NT_STATUS_NO_MEMORY;
615 }
616
617 session_info->unix_info = talloc_zero(session_info, struct auth_user_info_unix);
618 if (!session_info->unix_info) {
619 TALLOC_FREE(session_info);
620 return NT_STATUS_NO_MEMORY;
621 }
622 session_info->unix_info->unix_name = talloc_steal(session_info->unix_info, unix_username);
623
624 *session_info_out = session_info;
625
626 return NT_STATUS_OK;
627 }
628
629 /**
630 * Return the challenge as determined by the authentication subsystem
631 * @return an 8 byte random challenge
632 */
633
634 static NTSTATUS ntlm_auth_get_challenge(struct auth4_context *auth_ctx,
635 uint8_t chal[8])
636 {
637 if (auth_ctx->challenge.data.length == 8) {
638 DEBUG(5, ("auth_get_challenge: returning previous challenge by module %s (normal)\n",
639 auth_ctx->challenge.set_by));
640 memcpy(chal, auth_ctx->challenge.data.data, 8);
641 return NT_STATUS_OK;
642 }
643
644 if (!auth_ctx->challenge.set_by) {
645 generate_random_buffer(chal, 8);
646
647 auth_ctx->challenge.data = data_blob_talloc(auth_ctx, chal, 8);
648 NT_STATUS_HAVE_NO_MEMORY(auth_ctx->challenge.data.data);
649 auth_ctx->challenge.set_by = "random";
650
651 auth_ctx->challenge.may_be_modified = true;
652 }
653
654 DEBUG(10,("auth_get_challenge: challenge set by %s\n",
655 auth_ctx->challenge.set_by));
656
657 return NT_STATUS_OK;
658 }
659
660 /**
661 * Some authentication methods 'fix' the challenge, so we may not be able to set it
662 *
663 * @return If the effective challenge used by the auth subsystem may be modified
664 */
665 static bool ntlm_auth_may_set_challenge(struct auth4_context *auth_ctx)
666 {
667 return auth_ctx->challenge.may_be_modified;
668 }
669
670 /**
671 * NTLM2 authentication modifies the effective challenge,
672 * @param challenge The new challenge value
673 */
674 static NTSTATUS ntlm_auth_set_challenge(struct auth4_context *auth_ctx, const uint8_t chal[8], const char *set_by)
675 {
676 auth_ctx->challenge.set_by = talloc_strdup(auth_ctx, set_by);
677 NT_STATUS_HAVE_NO_MEMORY(auth_ctx->challenge.set_by);
678
679 auth_ctx->challenge.data = data_blob_talloc(auth_ctx, chal, 8);
680 NT_STATUS_HAVE_NO_MEMORY(auth_ctx->challenge.data.data);
681
682 return NT_STATUS_OK;
683 }
684
685 /**
686 * Check the password on an NTLMSSP login.
687 *
688 * Return the session keys used on the connection.
689 */
690
691 static NTSTATUS winbind_pw_check(struct auth4_context *auth4_context,
692 TALLOC_CTX *mem_ctx,
693 const struct auth_usersupplied_info *user_info,
694 void **server_returned_info,
695 DATA_BLOB *session_key, DATA_BLOB *lm_session_key)
696 {
697 static const char zeros[16] = { 0, };
698 NTSTATUS nt_status;
699 char *error_string = NULL;
700 uint8 lm_key[8];
701 uint8 user_sess_key[16];
702 char *unix_name = NULL;
703
704 nt_status = contact_winbind_auth_crap(user_info->client.account_name, user_info->client.domain_name,
705 user_info->workstation_name,
706 &auth4_context->challenge.data,
707 &user_info->password.response.lanman,
708 &user_info->password.response.nt,
709 WBFLAG_PAM_LMKEY | WBFLAG_PAM_USER_SESSION_KEY | WBFLAG_PAM_UNIX_NAME,
710 0,
711 lm_key, user_sess_key,
712 &error_string, &unix_name);
713
714 if (NT_STATUS_IS_OK(nt_status)) {
715 if (memcmp(lm_key, zeros, 8) != 0) {
716 *lm_session_key = data_blob_talloc(mem_ctx, NULL, 16);
717 memcpy(lm_session_key->data, lm_key, 8);
718 memset(lm_session_key->data+8, '\0', 8);
719 }
720
721 if (memcmp(user_sess_key, zeros, 16) != 0) {
722 *session_key = data_blob_talloc(mem_ctx, user_sess_key, 16);
723 }
724 *server_returned_info = talloc_strdup(mem_ctx,
725 unix_name);
726 } else {
727 DEBUG(NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED) ? 0 : 3,
728 ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
729 user_info->client.domain_name, user_info->client.account_name,
730 user_info->workstation_name,
731 error_string ? error_string : "unknown error (NULL)"));
732 }
733
734 SAFE_FREE(error_string);
735 SAFE_FREE(unix_name);
736 return nt_status;
737 }
738
739 static NTSTATUS local_pw_check(struct auth4_context *auth4_context,
740 TALLOC_CTX *mem_ctx,
741 const struct auth_usersupplied_info *user_info,
742 void **server_returned_info,
743 DATA_BLOB *session_key, DATA_BLOB *lm_session_key)
744 {
745 NTSTATUS nt_status;
746 struct samr_Password lm_pw, nt_pw;
747
748 nt_lm_owf_gen (opt_password, nt_pw.hash, lm_pw.hash);
749
750 nt_status = ntlm_password_check(mem_ctx,
751 true, true, 0,
752 &auth4_context->challenge.data,
753 &user_info->password.response.lanman,
754 &user_info->password.response.nt,
755 user_info->client.account_name,
756 user_info->client.account_name,
757 user_info->client.domain_name,
758 &lm_pw, &nt_pw, session_key, lm_session_key);
759
760 if (NT_STATUS_IS_OK(nt_status)) {
761 *server_returned_info = talloc_asprintf(mem_ctx,
762 "%s%c%s", user_info->client.domain_name,
763 *lp_winbind_separator(),
764 user_info->client.account_name);
765 } else {
766 DEBUG(3, ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
767 user_info->client.domain_name, user_info->client.account_name,
768 user_info->workstation_name,
769 nt_errstr(nt_status)));
770 }
771 return nt_status;
772 }
773
774 static NTSTATUS ntlm_auth_start_ntlmssp_client(struct ntlmssp_state **client_ntlmssp_state)
775 {
776 NTSTATUS status;
777 if ( (opt_username == NULL) || (opt_domain == NULL) ) {
778 status = NT_STATUS_UNSUCCESSFUL;
779 DEBUG(1, ("Need username and domain for NTLMSSP\n"));
780 return NT_STATUS_INVALID_PARAMETER;
781 }
782
783 status = ntlmssp_client_start(NULL,
784 lp_netbios_name(),
785 lp_workgroup(),
786 lp_client_ntlmv2_auth(),
787 client_ntlmssp_state);
788
789 if (!NT_STATUS_IS_OK(status)) {
790 DEBUG(1, ("Could not start NTLMSSP client: %s\n",
791 nt_errstr(status)));
792 TALLOC_FREE(*client_ntlmssp_state);
793 return status;
794 }
795
796 status = ntlmssp_set_username(*client_ntlmssp_state, opt_username);
797
798 if (!NT_STATUS_IS_OK(status)) {
799 DEBUG(1, ("Could not set username: %s\n",
800 nt_errstr(status)));
801 TALLOC_FREE(*client_ntlmssp_state);
802 return status;
803 }
804
805 status = ntlmssp_set_domain(*client_ntlmssp_state, opt_domain);
806
807 if (!NT_STATUS_IS_OK(status)) {
808 DEBUG(1, ("Could not set domain: %s\n",
809 nt_errstr(status)));
810 TALLOC_FREE(*client_ntlmssp_state);
811 return status;
812 }
813
814 if (opt_password) {
815 status = ntlmssp_set_password(*client_ntlmssp_state, opt_password);
816
817 if (!NT_STATUS_IS_OK(status)) {
818 DEBUG(1, ("Could not set password: %s\n",
819 nt_errstr(status)));
820 TALLOC_FREE(*client_ntlmssp_state);
821 return status;
822 }
823 }
824
825 return NT_STATUS_OK;
826 }
827
828 static struct auth4_context *make_auth4_context_ntlm_auth(TALLOC_CTX *mem_ctx, bool local_pw)
829 {
830 struct auth4_context *auth4_context = talloc_zero(mem_ctx, struct auth4_context);
831 if (auth4_context == NULL) {
832 DEBUG(10, ("failed to allocate auth4_context failed\n"));
833 return NULL;
834 }
835 auth4_context->generate_session_info = ntlm_auth_generate_session_info;
836 auth4_context->get_ntlm_challenge = ntlm_auth_get_challenge;
837 auth4_context->set_ntlm_challenge = ntlm_auth_set_challenge;
838 auth4_context->challenge_may_be_modified = ntlm_auth_may_set_challenge;
839 if (local_pw) {
840 auth4_context->check_ntlm_password = local_pw_check;
841 } else {
842 auth4_context->check_ntlm_password = winbind_pw_check;
843 }
844 auth4_context->private_data = NULL;
845 return auth4_context;
846 }
847
848 static NTSTATUS ntlm_auth_start_ntlmssp_server(TALLOC_CTX *mem_ctx,
849 struct gensec_security **gensec_security_out)
850 {
851 struct gensec_security *gensec_security;
852 NTSTATUS nt_status;
853
854 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
855 NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
856
857 struct gensec_settings *gensec_settings;
858 struct loadparm_context *lp_ctx;
859 size_t idx = 0;
860 struct cli_credentials *server_credentials;
861
862 struct auth4_context *auth4_context = make_auth4_context_ntlm_auth(tmp_ctx, opt_password);
863 if (auth4_context == NULL) {
864 TALLOC_FREE(tmp_ctx);
865 return NT_STATUS_NO_MEMORY;
866 }
867
868 lp_ctx = loadparm_init_s3(tmp_ctx, loadparm_s3_context());
869 if (lp_ctx == NULL) {
870 DEBUG(10, ("loadparm_init_s3 failed\n"));
871 TALLOC_FREE(tmp_ctx);
872 return NT_STATUS_INVALID_SERVER_STATE;
873 }
874
875 gensec_settings = lpcfg_gensec_settings(tmp_ctx, lp_ctx);
876 if (lp_ctx == NULL) {
877 DEBUG(10, ("lpcfg_gensec_settings failed\n"));
878 TALLOC_FREE(tmp_ctx);
879 return NT_STATUS_NO_MEMORY;
880 }
881
882 /*
883 * This should be a 'netbios domain -> DNS domain'
884 * mapping, and can currently validly return NULL on
885 * poorly configured systems.
886 *
887 * This is used for the NTLMSSP server
888 *
889 */
890 if (opt_password) {
891 gensec_settings->server_netbios_name = lp_netbios_name();
892 gensec_settings->server_netbios_domain = lp_workgroup();
893 } else {
894 gensec_settings->server_netbios_name = get_winbind_netbios_name();
895 gensec_settings->server_netbios_domain = get_winbind_domain();
896 }
897
898 gensec_settings->server_dns_domain = strlower_talloc(gensec_settings,
899 get_mydnsdomname(talloc_tos()));
900 gensec_settings->server_dns_name = strlower_talloc(gensec_settings,
901 get_mydnsfullname());
902
903 gensec_settings->backends = talloc_zero_array(gensec_settings,
904 struct gensec_security_ops *, 4);
905
906 if (gensec_settings->backends == NULL) {
907 TALLOC_FREE(tmp_ctx);
908 return NT_STATUS_NO_MEMORY;
909 }
910
911 gensec_init();
912
913 gensec_settings->backends[idx++] = gensec_security_by_oid(NULL, GENSEC_OID_NTLMSSP);
914
915 #if defined(HAVE_KRB5)
916 gensec_settings->backends[idx++] = &gensec_gse_krb5_security_ops;
917 #endif
918
919 gensec_settings->backends[idx++] = gensec_security_by_oid(NULL,
920 GENSEC_OID_SPNEGO);
921
922 /*
923 * This is anonymous for now, because we just use it
924 * to set the kerberos state at the moment
925 */
926 server_credentials = cli_credentials_init_anon(tmp_ctx);
927 if (!server_credentials) {
928 DEBUG(0, ("auth_generic_prepare: Failed to init server credentials\n"));
929 return NT_STATUS_NO_MEMORY;
930 }
931
932 cli_credentials_set_conf(server_credentials, lp_ctx);
933
934 if (lp_security() == SEC_ADS || USE_KERBEROS_KEYTAB) {
935 cli_credentials_set_kerberos_state(server_credentials, CRED_AUTO_USE_KERBEROS);
936 } else {
937 cli_credentials_set_kerberos_state(server_credentials, CRED_DONT_USE_KERBEROS);
938 }
939
940 nt_status = gensec_server_start(tmp_ctx, gensec_settings,
941 auth4_context, &gensec_security);
942
943 if (!NT_STATUS_IS_OK(nt_status)) {
944 TALLOC_FREE(tmp_ctx);
945 return nt_status;
946 }
947
948 gensec_set_credentials(gensec_security, server_credentials);
949
950 gensec_want_feature(gensec_security, GENSEC_FEATURE_SIGN);
951 gensec_want_feature(gensec_security, GENSEC_FEATURE_SEAL);
952
953 talloc_unlink(tmp_ctx, lp_ctx);
954 talloc_unlink(tmp_ctx, server_credentials);
955 talloc_unlink(tmp_ctx, gensec_settings);
956 talloc_unlink(tmp_ctx, auth4_context);
957
958 nt_status = gensec_start_mech_by_oid(gensec_security, GENSEC_OID_NTLMSSP);
959 if (!NT_STATUS_IS_OK(nt_status)) {
960 TALLOC_FREE(tmp_ctx);
961 return nt_status;
962 }
963
964 *gensec_security_out = talloc_steal(mem_ctx, gensec_security);
965 TALLOC_FREE(tmp_ctx);
966 return NT_STATUS_OK;
967 }
968
969 /*******************************************************************
970 Used by firefox to drive NTLM auth to IIS servers.
971 *******************************************************************/
972
973 static NTSTATUS do_ccache_ntlm_auth(DATA_BLOB initial_msg, DATA_BLOB challenge_msg,
974 DATA_BLOB *reply)
975 {
976 struct winbindd_request wb_request;
977 struct winbindd_response wb_response;
978 int ctrl = 0;
979 NSS_STATUS result;
980
981 /* get winbindd to do the ntlmssp step on our behalf */
982 ZERO_STRUCT(wb_request);
983 ZERO_STRUCT(wb_response);
984
985 /*
986 * This is tricky here. If we set krb5_auth in pam_winbind.conf
987 * creds for users in trusted domain will be stored the winbindd
988 * child of the trusted domain. If we ask the primary domain for
989 * ntlm_ccache_auth, it will fail. So, we have to ask the trusted
990 * domain's child for ccache_ntlm_auth. that is to say, we have to
991 * set WBFLAG_PAM_CONTACT_TRUSTDOM in request.flags.
992 */
993 ctrl = get_pam_winbind_config();
994
995 if (ctrl & WINBIND_KRB5_AUTH) {
996 wb_request.flags |= WBFLAG_PAM_CONTACT_TRUSTDOM;
997 }
998
999 fstr_sprintf(wb_request.data.ccache_ntlm_auth.user,
1000 "%s%c%s", opt_domain, winbind_separator(), opt_username);
1001 wb_request.data.ccache_ntlm_auth.uid = geteuid();
1002 wb_request.data.ccache_ntlm_auth.initial_blob_len = initial_msg.length;
1003 wb_request.data.ccache_ntlm_auth.challenge_blob_len = challenge_msg.length;
1004 wb_request.extra_len = initial_msg.length + challenge_msg.length;
1005
1006 if (wb_request.extra_len > 0) {
1007 wb_request.extra_data.data = SMB_MALLOC_ARRAY(char, wb_request.extra_len);
1008 if (wb_request.extra_data.data == NULL) {
1009 return NT_STATUS_NO_MEMORY;
1010 }
1011
1012 memcpy(wb_request.extra_data.data, initial_msg.data, initial_msg.length);
1013 memcpy(wb_request.extra_data.data + initial_msg.length,
1014 challenge_msg.data, challenge_msg.length);
1015 }
1016
1017 result = winbindd_request_response(WINBINDD_CCACHE_NTLMAUTH, &wb_request, &wb_response);
1018 SAFE_FREE(wb_request.extra_data.data);
1019
1020 if (result != NSS_STATUS_SUCCESS) {
1021 winbindd_free_response(&wb_response);
1022 return NT_STATUS_UNSUCCESSFUL;
1023 }
1024
1025 if (reply) {
1026 *reply = data_blob(wb_response.extra_data.data,
1027 wb_response.data.ccache_ntlm_auth.auth_blob_len);
1028 if (wb_response.data.ccache_ntlm_auth.auth_blob_len > 0 &&
1029 reply->data == NULL) {
1030 winbindd_free_response(&wb_response);
1031 return NT_STATUS_NO_MEMORY;
1032 }
1033 }
1034
1035 winbindd_free_response(&wb_response);
1036 return NT_STATUS_MORE_PROCESSING_REQUIRED;
1037 }
1038
1039 static void manage_squid_ntlmssp_request_int(struct ntlm_auth_state *state,
1040 char *buf, int length,
1041 TALLOC_CTX *mem_ctx,
1042 char **response)
1043 {
1044 DATA_BLOB request, reply;
1045 NTSTATUS nt_status;
1046
1047 if (strlen(buf) < 2) {
1048 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
1049 *response = talloc_strdup(mem_ctx, "BH NTLMSSP query invalid");
1050 return;
1051 }
1052
1053 if (strlen(buf) > 3) {
1054 if(strncmp(buf, "SF ", 3) == 0){
1055 DEBUG(10, ("Setting flags to negotioate\n"));
1056 TALLOC_FREE(state->want_feature_list);
1057 state->want_feature_list = talloc_strdup(state->mem_ctx,
1058 buf+3);
1059 *response = talloc_strdup(mem_ctx, "OK");
1060 return;
1061 }
1062 request = base64_decode_data_blob(buf + 3);
1063 } else {
1064 request = data_blob_null;
1065 }
1066
1067 if ((strncmp(buf, "PW ", 3) == 0)) {
1068 /* The calling application wants us to use a local password
1069 * (rather than winbindd) */
1070
1071 opt_password = SMB_STRNDUP((const char *)request.data,
1072 request.length);
1073
1074 if (opt_password == NULL) {
1075 DEBUG(1, ("Out of memory\n"));
1076 *response = talloc_strdup(mem_ctx, "BH Out of memory");
1077 data_blob_free(&request);
1078 return;
1079 }
1080
1081 *response = talloc_strdup(mem_ctx, "OK");
1082 data_blob_free(&request);
1083 return;
1084 }
1085
1086 if (strncmp(buf, "YR", 2) == 0) {
1087 TALLOC_FREE(state->gensec_security);
1088 state->svr_state = SERVER_INITIAL;
1089 } else if (strncmp(buf, "KK", 2) == 0) {
1090 /* No special preprocessing required */
1091 } else if (strncmp(buf, "GF", 2) == 0) {
1092 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
1093
1094 if (state->svr_state == SERVER_FINISHED) {
1095 *response = talloc_asprintf(mem_ctx, "GF 0x%08x",
1096 gensec_ntlmssp_neg_flags(state->gensec_security));
1097 }
1098 else {
1099 *response = talloc_strdup(mem_ctx, "BH\n");
1100 }
1101 data_blob_free(&request);
1102 return;
1103 } else if (strncmp(buf, "GK", 2) == 0) {
1104 DEBUG(10, ("Requested NTLMSSP session key\n"));
1105 if(state->have_session_key) {
1106 DATA_BLOB session_key;
1107 char *key64;
1108 nt_status = gensec_session_key(state->gensec_security, talloc_tos(), &session_key);
1109 if (!NT_STATUS_IS_OK(nt_status)) {
1110 *response = talloc_asprintf(
1111 mem_ctx, "BH %s", nt_errstr(nt_status));
1112 return;
1113 }
1114 key64 = base64_encode_data_blob(state->mem_ctx, session_key);
1115 data_blob_free(&session_key);
1116 *response = talloc_asprintf(mem_ctx, "GK %s",
1117 key64 ? key64 : "<NULL>");
1118 TALLOC_FREE(key64);
1119 } else {
1120 *response = talloc_strdup(mem_ctx, "BH");
1121 }
1122
1123 data_blob_free(&request);
1124 return;
1125 } else {
1126 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
1127 *response = talloc_strdup(mem_ctx, "BH NTLMSSP query invalid");
1128 return;
1129 }
1130
1131 if (!state->gensec_security) {
1132 nt_status = ntlm_auth_start_ntlmssp_server(state,
1133 &state->gensec_security);
1134 if (!NT_STATUS_IS_OK(nt_status)) {
1135 *response = talloc_asprintf(
1136 mem_ctx, "BH %s", nt_errstr(nt_status));
1137 return;
1138 }
1139 gensec_want_feature_list(state->gensec_security,
1140 state->want_feature_list);
1141 }
1142
1143 DEBUG(10, ("got NTLMSSP packet:\n"));
1144 dump_data(10, request.data, request.length);
1145
1146 nt_status = gensec_update(state->gensec_security, talloc_tos(), NULL, request, &reply);
1147
1148 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1149 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
1150 reply);
1151 *response = talloc_asprintf(mem_ctx, "TT %s", reply_base64);
1152 TALLOC_FREE(reply_base64);
1153 data_blob_free(&reply);
1154 state->svr_state = SERVER_CHALLENGE;
1155 DEBUG(10, ("NTLMSSP challenge\n"));
1156 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
1157 *response = talloc_asprintf(mem_ctx, "BH %s",
1158 nt_errstr(nt_status));
1159 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
1160
1161 TALLOC_FREE(state->gensec_security);
1162 } else if (!NT_STATUS_IS_OK(nt_status)) {
1163 *response = talloc_asprintf(mem_ctx, "NA %s",
1164 nt_errstr(nt_status));
1165 DEBUG(10, ("NTLMSSP %s\n", nt_errstr(nt_status)));
1166 } else {
1167 struct auth_session_info *session_info;
1168 nt_status = gensec_session_info(state->gensec_security, state->gensec_security, &session_info);
1169 if (!NT_STATUS_IS_OK(nt_status)) {
1170 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
1171 TALLOC_FREE(state->gensec_security);
1172 return;
1173 }
1174 *response = talloc_asprintf(
1175 mem_ctx, "AF %s",
1176 session_info->unix_info->unix_name);
1177 DEBUG(10, ("NTLMSSP OK!\n"));
1178
1179 state->have_session_key = true;
1180 state->svr_state = SERVER_FINISHED;
1181 }
1182
1183 data_blob_free(&request);
1184 }
1185
1186 static void manage_squid_ntlmssp_request(struct ntlm_auth_state *state,
1187 char *buf, int length)
1188 {
1189 char *response;
1190
1191 manage_squid_ntlmssp_request_int(state, buf, length,
1192 talloc_tos(), &response);
1193
1194 if (response == NULL) {
1195 x_fprintf(x_stdout, "BH Out of memory\n");
1196 return;
1197 }
1198 x_fprintf(x_stdout, "%s\n", response);
1199 TALLOC_FREE(response);
1200 }
1201
1202 static void manage_client_ntlmssp_request(struct ntlm_auth_state *state,
1203 char *buf, int length)
1204 {
1205 DATA_BLOB request, reply;
1206 NTSTATUS nt_status;
1207
1208 if (!opt_username || !*opt_username) {
1209 x_fprintf(x_stderr, "username must be specified!\n\n");
1210 exit(1);
1211 }
1212
1213 if (strlen(buf) < 2) {
1214 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
1215 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
1216 return;
1217 }
1218
1219 if (strlen(buf) > 3) {
1220 if(strncmp(buf, "SF ", 3) == 0) {
1221 DEBUG(10, ("Looking for flags to negotiate\n"));
1222 talloc_free(state->want_feature_list);
1223 state->want_feature_list = talloc_strdup(state->mem_ctx,
1224 buf+3);
1225 x_fprintf(x_stdout, "OK\n");
1226 return;
1227 }
1228 request = base64_decode_data_blob(buf + 3);
1229 } else {
1230 request = data_blob_null;
1231 }
1232
1233 if (strncmp(buf, "PW ", 3) == 0) {
1234 /* We asked for a password and obviously got it :-) */
1235
1236 opt_password = SMB_STRNDUP((const char *)request.data,
1237 request.length);
1238
1239 if (opt_password == NULL) {
1240 DEBUG(1, ("Out of memory\n"));
1241 x_fprintf(x_stdout, "BH Out of memory\n");
1242 data_blob_free(&request);
1243 return;
1244 }
1245
1246 x_fprintf(x_stdout, "OK\n");
1247 data_blob_free(&request);
1248 return;
1249 }
1250
1251 if (!state->ntlmssp_state && use_cached_creds) {
1252 /* check whether cached credentials are usable. */
1253 DATA_BLOB empty_blob = data_blob_null;
1254
1255 nt_status = do_ccache_ntlm_auth(empty_blob, empty_blob, NULL);
1256 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1257 /* failed to use cached creds */
1258 use_cached_creds = False;
1259 }
1260 }
1261
1262 if (opt_password == NULL && !use_cached_creds) {
1263 /* Request a password from the calling process. After
1264 sending it, the calling process should retry asking for the
1265 negotiate. */
1266
1267 DEBUG(10, ("Requesting password\n"));
1268 x_fprintf(x_stdout, "PW\n");
1269 return;
1270 }
1271
1272 if (strncmp(buf, "YR", 2) == 0) {
1273 TALLOC_FREE(state->ntlmssp_state);
1274 state->cli_state = CLIENT_INITIAL;
1275 } else if (strncmp(buf, "TT", 2) == 0) {
1276 /* No special preprocessing required */
1277 } else if (strncmp(buf, "GF", 2) == 0) {
1278 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
1279
1280 if(state->cli_state == CLIENT_FINISHED) {
1281 x_fprintf(x_stdout, "GF 0x%08x\n", state->neg_flags);
1282 }
1283 else {
1284 x_fprintf(x_stdout, "BH\n");
1285 }
1286
1287 data_blob_free(&request);
1288 return;
1289 } else if (strncmp(buf, "GK", 2) == 0 ) {
1290 DEBUG(10, ("Requested session key\n"));
1291
1292 if(state->cli_state == CLIENT_FINISHED) {
1293 char *key64 = base64_encode_data_blob(state->mem_ctx,
1294 state->session_key);
1295 x_fprintf(x_stdout, "GK %s\n", key64?key64:"<NULL>");
1296 TALLOC_FREE(key64);
1297 }
1298 else {
1299 x_fprintf(x_stdout, "BH\n");
1300 }
1301
1302 data_blob_free(&request);
1303 return;
1304 } else {
1305 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
1306 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
1307 return;
1308 }
1309
1310 if (!state->ntlmssp_state) {
1311 nt_status = ntlm_auth_start_ntlmssp_client(
1312 &state->ntlmssp_state);
1313 if (!NT_STATUS_IS_OK(nt_status)) {
1314 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
1315 return;
1316 }
1317 ntlmssp_want_feature_list(state->ntlmssp_state,
1318 state->want_feature_list);
1319 state->initial_message = data_blob_null;
1320 }
1321
1322 DEBUG(10, ("got NTLMSSP packet:\n"));
1323 dump_data(10, request.data, request.length);
1324
1325 if (use_cached_creds && !opt_password &&
1326 (state->cli_state == CLIENT_RESPONSE)) {
1327 nt_status = do_ccache_ntlm_auth(state->initial_message, request,
1328 &reply);
1329 } else {
1330 nt_status = ntlmssp_update(state->ntlmssp_state, request,
1331 &reply);
1332 }
1333
1334 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1335 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
1336 reply);
1337 if (state->cli_state == CLIENT_INITIAL) {
1338 x_fprintf(x_stdout, "YR %s\n", reply_base64);
1339 state->initial_message = reply;
1340 state->cli_state = CLIENT_RESPONSE;
1341 } else {
1342 x_fprintf(x_stdout, "KK %s\n", reply_base64);
1343 data_blob_free(&reply);
1344 }
1345 TALLOC_FREE(reply_base64);
1346 DEBUG(10, ("NTLMSSP challenge\n"));
1347 } else if (NT_STATUS_IS_OK(nt_status)) {
1348 char *reply_base64 = base64_encode_data_blob(talloc_tos(),
1349 reply);
1350 x_fprintf(x_stdout, "AF %s\n", reply_base64);
1351 TALLOC_FREE(reply_base64);
1352
1353 if(state->have_session_key)
1354 data_blob_free(&state->session_key);
1355
1356 state->session_key = data_blob(
1357 state->ntlmssp_state->session_key.data,
1358 state->ntlmssp_state->session_key.length);
1359 state->neg_flags = state->ntlmssp_state->neg_flags;
1360 state->have_session_key = true;
1361
1362 DEBUG(10, ("NTLMSSP OK!\n"));
1363 state->cli_state = CLIENT_FINISHED;
1364 TALLOC_FREE(state->ntlmssp_state);
1365 } else {
1366 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
1367 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
1368 state->cli_state = CLIENT_ERROR;
1369 TALLOC_FREE(state->ntlmssp_state);
1370 }
1371
1372 data_blob_free(&request);
1373 }
1374
1375 static void manage_squid_basic_request(struct ntlm_auth_state *state,
1376 char *buf, int length)
1377 {
1378 char *user, *pass;
1379 user=buf;
1380
1381 pass=(char *)memchr(buf,' ',length);
1382 if (!pass) {
1383 DEBUG(2, ("Password not found. Denying access\n"));
1384 x_fprintf(x_stdout, "ERR\n");
1385 return;
1386 }
1387 *pass='\0';
1388 pass++;
1389
1390 if (state->helper_mode == SQUID_2_5_BASIC) {
1391 rfc1738_unescape(user);
1392 rfc1738_unescape(pass);
1393 }
1394
1395 if (check_plaintext_auth(user, pass, False)) {
1396 x_fprintf(x_stdout, "OK\n");
1397 } else {
1398 x_fprintf(x_stdout, "ERR\n");
1399 }
1400 }
1401
1402 static void offer_gss_spnego_mechs(void) {
1403
1404 DATA_BLOB token;
1405 struct spnego_data spnego;
1406 ssize_t len;
1407 char *reply_base64;
1408 TALLOC_CTX *ctx = talloc_tos();
1409 char *principal;
1410 char *myname_lower;
1411
1412 ZERO_STRUCT(spnego);
1413
1414 myname_lower = talloc_strdup(ctx, lp_netbios_name());
1415 if (!myname_lower) {
1416 return;
1417 }
1418 strlower_m(myname_lower);
1419
1420 principal = talloc_asprintf(ctx, "%s$@%s", myname_lower, lp_realm());
1421 if (!principal) {
1422 return;
1423 }
1424
1425 /* Server negTokenInit (mech offerings) */
1426 spnego.type = SPNEGO_NEG_TOKEN_INIT;
1427 spnego.negTokenInit.mechTypes = talloc_array(ctx, const char *, 4);
1428 #ifdef HAVE_KRB5
1429 spnego.negTokenInit.mechTypes[0] = talloc_strdup(ctx, OID_KERBEROS5_OLD);
1430 spnego.negTokenInit.mechTypes[1] = talloc_strdup(ctx, OID_KERBEROS5);
1431 spnego.negTokenInit.mechTypes[2] = talloc_strdup(ctx, OID_NTLMSSP);
1432 spnego.negTokenInit.mechTypes[3] = NULL;
1433 #else
1434 spnego.negTokenInit.mechTypes[0] = talloc_strdup(ctx, OID_NTLMSSP);
1435 spnego.negTokenInit.mechTypes[1] = NULL;
1436 #endif
1437
1438
1439 spnego.negTokenInit.mechListMIC = data_blob_talloc(ctx, principal,
1440 strlen(principal));
1441
1442 len = spnego_write_data(ctx, &token, &spnego);
1443 spnego_free_data(&spnego);
1444
1445 if (len == -1) {
1446 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1447 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1448 return;
1449 }
1450
1451 reply_base64 = base64_encode_data_blob(talloc_tos(), token);
1452 x_fprintf(x_stdout, "TT %s *\n", reply_base64);
1453
1454 TALLOC_FREE(reply_base64);
1455 data_blob_free(&token);
1456 DEBUG(10, ("sent SPNEGO negTokenInit\n"));
1457 return;
1458 }
1459
1460 static void manage_gss_spnego_request(struct ntlm_auth_state *state,
1461 char *buf, int length)
1462 {
1463 struct spnego_data request, response;
1464 DATA_BLOB token;
1465 DATA_BLOB raw_in_token = data_blob_null;
1466 DATA_BLOB raw_out_token = data_blob_null;
1467 NTSTATUS status;
1468 ssize_t len;
1469 TALLOC_CTX *ctx = talloc_tos();
1470
1471 const char *unix_username = NULL;
1472
1473 const char *reply_code;
1474 char *reply_base64;
1475 char *reply_argument = NULL;
1476 char *supportedMech = NULL;
1477
1478 if (strlen(buf) < 2) {
1479 DEBUG(1, ("SPENGO query [%s] invalid\n", buf));
1480 x_fprintf(x_stdout, "BH SPENGO query invalid\n");
1481 return;
1482 }
1483
1484 if (strncmp(buf, "YR", 2) == 0) {
1485 TALLOC_FREE(state->gensec_security);
1486 TALLOC_FREE(state->spnego_mech);
1487 TALLOC_FREE(state->spnego_mech_oid);
1488 } else if (strncmp(buf, "KK", 2) == 0) {
1489 ;
1490 } else {
1491 DEBUG(1, ("SPENGO query [%s] invalid\n", buf));
1492 x_fprintf(x_stdout, "BH SPENGO query invalid\n");
1493 return;
1494 }
1495
1496 if ( (strlen(buf) == 2)) {
1497
1498 /* no client data, get the negTokenInit offering
1499 mechanisms */
1500
1501 offer_gss_spnego_mechs();
1502 return;
1503 }
1504
1505 /* All subsequent requests have a blob. This might be negTokenInit or negTokenTarg */
1506
1507 if (strlen(buf) <= 3) {
1508 DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
1509 x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
1510 return;
1511 }
1512
1513 token = base64_decode_data_blob(buf + 3);
1514
1515 if ((token.length >= 7)
1516 && (strncmp((char *)token.data, "NTLMSSP", 7) == 0)) {
1517 char *reply;
1518
1519 data_blob_free(&token);
1520
1521 DEBUG(10, ("Could not parse GSS-SPNEGO, trying raw "
1522 "ntlmssp\n"));
1523
1524 manage_squid_ntlmssp_request_int(state, buf, length,
1525 talloc_tos(), &reply);
1526 if (reply == NULL) {
1527 x_fprintf(x_stdout, "BH Out of memory\n");
1528 return;
1529 }
1530
1531 if (strncmp(reply, "AF ", 3) == 0) {
1532 x_fprintf(x_stdout, "AF * %s\n", reply+3);
1533 } else {
1534 x_fprintf(x_stdout, "%s *\n", reply);
1535 }
1536
1537 TALLOC_FREE(reply);
1538 return;
1539 }
1540
1541 ZERO_STRUCT(request);
1542 len = spnego_read_data(ctx, token, &request);
1543 data_blob_free(&token);
1544
1545 if (len == -1) {
1546 DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
1547 x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
1548 return;
1549 }
1550
1551 if (request.type == SPNEGO_NEG_TOKEN_INIT) {
1552 #ifdef HAVE_KRB5
1553 int krb5_idx = -1;
1554 #endif
1555 int ntlm_idx = -1;
1556 int used_idx = -1;
1557 int i;
1558
1559 if (state->spnego_mech) {
1560 DEBUG(1, ("Client restarted SPNEGO with NegTokenInit "
1561 "while mech[%s] was already negotiated\n",
1562 state->spnego_mech));
1563 x_fprintf(x_stdout, "BH Client send NegTokenInit twice\n");
1564 return;
1565 }
1566
1567 /* Second request from Client. This is where the
1568 client offers its mechanism to use. */
1569
1570 if ( (request.negTokenInit.mechTypes == NULL) ||
1571 (request.negTokenInit.mechTypes[0] == NULL) ) {
1572 DEBUG(1, ("Client did not offer any mechanism\n"));
1573 x_fprintf(x_stdout, "BH Client did not offer any "
1574 "mechanism\n");
1575 return;
1576 }
1577
1578 status = NT_STATUS_UNSUCCESSFUL;
1579 for (i = 0; request.negTokenInit.mechTypes[i] != NULL; i++) {
1580 DEBUG(10,("got mech[%d][%s]\n",
1581 i, request.negTokenInit.mechTypes[i]));
1582 #ifdef HAVE_KRB5
1583 if (strcmp(request.negTokenInit.mechTypes[i], OID_KERBEROS5_OLD) == 0) {
1584 krb5_idx = i;
1585 break;
1586 }
1587 if (strcmp(request.negTokenInit.mechTypes[i], OID_KERBEROS5) == 0) {
1588 krb5_idx = i;
1589 break;
1590 }
1591 #endif
1592 if (strcmp(request.negTokenInit.mechTypes[i], OID_NTLMSSP) == 0) {
1593 ntlm_idx = i;
1594 break;
1595 }
1596 }
1597
1598 used_idx = ntlm_idx;
1599 #ifdef HAVE_KRB5
1600 if (krb5_idx != -1) {
1601 ntlm_idx = -1;
1602 used_idx = krb5_idx;
1603 }
1604 #endif
1605 if (ntlm_idx > -1) {
1606 state->spnego_mech = talloc_strdup(state, "ntlmssp");
1607 if (state->spnego_mech == NULL) {
1608 x_fprintf(x_stdout, "BH Out of memory\n");
1609 return;
1610 }
1611
1612 if (state->gensec_security) {
1613 DEBUG(1, ("Client wants a new NTLMSSP challenge, but "
1614 "already got one\n"));
1615 x_fprintf(x_stdout, "BH Client wants a new "
1616 "NTLMSSP challenge, but "
1617 "already got one\n");
1618 TALLOC_FREE(state->gensec_security);
1619 return;
1620 }
1621
1622 status = ntlm_auth_start_ntlmssp_server(state, &state->gensec_security);
1623 if (!NT_STATUS_IS_OK(status)) {
1624 x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1625 return;
1626 }
1627 }
1628
1629 #ifdef HAVE_KRB5
1630 if (krb5_idx > -1) {
1631 state->spnego_mech = talloc_strdup(state, "krb5");
1632 if (state->spnego_mech == NULL) {
1633 x_fprintf(x_stdout, "BH Out of memory\n");
1634 return;
1635 }
1636 }
1637 #endif
1638 if (used_idx > -1) {
1639 state->spnego_mech_oid = talloc_strdup(state,
1640 request.negTokenInit.mechTypes[used_idx]);
1641 if (state->spnego_mech_oid == NULL) {
1642 x_fprintf(x_stdout, "BH Out of memory\n");
1643 return;
1644 }
1645 supportedMech = talloc_strdup(ctx, state->spnego_mech_oid);
1646 if (supportedMech == NULL) {
1647 x_fprintf(x_stdout, "BH Out of memory\n");
1648 return;
1649 }
1650
1651 status = NT_STATUS_MORE_PROCESSING_REQUIRED;
1652 } else {
1653 status = NT_STATUS_NOT_SUPPORTED;
1654 }
1655 if (used_idx == 0) {
1656 status = NT_STATUS_OK;
1657 raw_in_token = request.negTokenInit.mechToken;
1658 }
1659 } else {
1660 if (state->spnego_mech == NULL) {
1661 DEBUG(1,("Got netTokenTarg without negTokenInit\n"));
1662 x_fprintf(x_stdout, "BH Got a negTokenTarg without "
1663 "negTokenInit\n");
1664 return;
1665 }
1666
1667 if ((request.negTokenTarg.supportedMech != NULL) &&
1668 (strcmp(request.negTokenTarg.supportedMech, state->spnego_mech_oid) != 0 ) ) {
1669 DEBUG(1, ("Got a negTokenTarg with mech[%s] while [%s] was already negotiated\n",
1670 request.negTokenTarg.supportedMech,
1671 state->spnego_mech_oid));
1672 x_fprintf(x_stdout, "BH Got a negTokenTarg with speficied mech\n");
1673 return;
1674 }
1675
1676 status = NT_STATUS_OK;
1677 raw_in_token = request.negTokenTarg.responseToken;
1678 }
1679
1680 if (!NT_STATUS_IS_OK(status)) {
1681 /* error or more processing */
1682 } else if (strcmp(state->spnego_mech, "ntlmssp") == 0) {
1683
1684 DEBUG(10, ("got NTLMSSP packet:\n"));
1685 dump_data(10, raw_in_token.data, raw_in_token.length);
1686
1687 status = gensec_update(state->gensec_security,
1688 talloc_tos(), NULL,
1689 raw_in_token,
1690 &raw_out_token);
1691 if (NT_STATUS_IS_OK(status)) {
1692 struct auth_session_info *session_info;
1693 status = gensec_session_info(state->gensec_security, state->gensec_security, &session_info);
1694 if (!NT_STATUS_IS_OK(status)) {
1695 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(status)));
1696 TALLOC_FREE(state->gensec_security);
1697 return;
1698 }
1699 unix_username = session_info->unix_info->unix_name;
1700 DEBUG(10, ("NTLMSSP OK!\n"));
1701 }
1702 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1703 TALLOC_FREE(state->ntlmssp_state);
1704 }
1705 #ifdef HAVE_KRB5
1706 } else if (strcmp(state->spnego_mech, "krb5") == 0) {
1707 char *principal;
1708 DATA_BLOB ap_rep;
1709 DATA_BLOB session_key;
1710 struct PAC_LOGON_INFO *logon_info = NULL;
1711 DATA_BLOB ticket;
1712 uint8_t tok_id[2];
1713
1714 if (!spnego_parse_krb5_wrap(ctx, raw_in_token,
1715 &ticket, tok_id)) {
1716 DEBUG(1, ("spnego_parse_krb5_wrap failed\n"));
1717 x_fprintf(x_stdout, "BH spnego_parse_krb5_wrap failed\n");
1718 return;
1719 }
1720
1721 status = ads_verify_ticket(ctx, lp_realm(), 0,
1722 &ticket,
1723 &principal, &logon_info, &ap_rep,
1724 &session_key, True);
1725
1726 /* Now in "principal" we have the name we are authenticated as. */
1727
1728 if (NT_STATUS_IS_OK(status)) {
1729 char *domain;
1730 char *user;
1731 domain = strchr_m(principal, '@');
1732
1733 if (domain == NULL) {
1734 DEBUG(1, ("Did not get a valid principal "
1735 "from ads_verify_ticket\n"));
1736 x_fprintf(x_stdout, "BH Did not get a "
1737 "valid principal from "
1738 "ads_verify_ticket\n");
1739 return;
1740 }
1741
1742 *domain++ = '\0';
1743 domain = talloc_strdup(ctx, domain);
1744 user = talloc_strdup(ctx, principal);
1745
1746 if (logon_info) {
1747 netsamlogon_cache_store(
1748 user, &logon_info->info3);
1749 }
1750
1751 data_blob_free(&ap_rep);
1752 data_blob_free(&session_key);
1753 unix_username = talloc_asprintf(ctx, "%s\\%s", domain, user);
1754 }
1755 data_blob_free(&ticket);
1756 #endif
1757 }
1758
1759 spnego_free_data(&request);
1760 ZERO_STRUCT(response);
1761 response.type = SPNEGO_NEG_TOKEN_TARG;
1762
1763 if (NT_STATUS_IS_OK(status)) {
1764 TALLOC_FREE(state->spnego_mech);
1765 TALLOC_FREE(state->spnego_mech_oid);
1766 response.negTokenTarg.negResult = SPNEGO_ACCEPT_COMPLETED;
1767 response.negTokenTarg.responseToken = raw_out_token;
1768 reply_code = "AF";
1769 reply_argument = unix_username;
1770 } else if (NT_STATUS_EQUAL(status,
1771 NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1772 response.negTokenTarg.supportedMech = supportedMech;
1773 response.negTokenTarg.responseToken = raw_out_token;
1774 response.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1775 reply_code = "TT";
1776 reply_argument = talloc_strdup(ctx, "*");
1777 } else {
1778 TALLOC_FREE(state->spnego_mech);
1779 TALLOC_FREE(state->spnego_mech_oid);
1780 data_blob_free(&raw_out_token);
1781 response.negTokenTarg.negResult = SPNEGO_REJECT;
1782 reply_code = "NA";
1783 reply_argument = talloc_strdup(ctx, nt_errstr(status));
1784 }
1785
1786 if (!reply_argument) {
1787 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1788 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1789 spnego_free_data(&response);
1790 return;
1791 }
1792
1793 len = spnego_write_data(ctx, &token, &response);
1794 spnego_free_data(&response);
1795
1796 if (len == -1) {
1797 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1798 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1799 return;
1800 }
1801
1802 reply_base64 = base64_encode_data_blob(talloc_tos(), token);
1803
1804 x_fprintf(x_stdout, "%s %s %s\n",
1805 reply_code, reply_base64, reply_argument);
1806
1807 TALLOC_FREE(reply_base64);
1808 data_blob_free(&token);
1809
1810 return;
1811 }
1812
1813 static struct ntlmssp_state *client_ntlmssp_state = NULL;
1814
1815 static bool manage_client_ntlmssp_init(struct spnego_data spnego)
1816 {
1817 NTSTATUS status;
1818 DATA_BLOB null_blob = data_blob_null;
1819 DATA_BLOB to_server;
1820 char *to_server_base64;
1821 const char *my_mechs[] = {OID_NTLMSSP, NULL};
1822 TALLOC_CTX *ctx = talloc_tos();
1823
1824 DEBUG(10, ("Got spnego negTokenInit with NTLMSSP\n"));
1825
1826 if (client_ntlmssp_state != NULL) {
1827 DEBUG(1, ("Request for initial SPNEGO request where "
1828 "we already have a state\n"));
1829 return False;
1830 }
1831
1832 if (!client_ntlmssp_state) {
1833 if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_client(&client_ntlmssp_state))) {
1834 x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1835 return False;
1836 }
1837 }
1838
1839
1840 if (opt_password == NULL) {
1841
1842 /* Request a password from the calling process. After
1843 sending it, the calling process should retry with
1844 the negTokenInit. */
1845
1846 DEBUG(10, ("Requesting password\n"));
1847 x_fprintf(x_stdout, "PW\n");
1848 return True;
1849 }
1850
1851 spnego.type = SPNEGO_NEG_TOKEN_INIT;
1852 spnego.negTokenInit.mechTypes = my_mechs;
1853 spnego.negTokenInit.reqFlags = data_blob_null;
1854 spnego.negTokenInit.reqFlagsPadding = 0;
1855 spnego.negTokenInit.mechListMIC = null_blob;
1856
1857 status = ntlmssp_update(client_ntlmssp_state, null_blob,
1858 &spnego.negTokenInit.mechToken);
1859
1860 if ( !(NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) ||
1861 NT_STATUS_IS_OK(status)) ) {
1862 DEBUG(1, ("Expected OK or MORE_PROCESSING_REQUIRED, got: %s\n",
1863 nt_errstr(status)));
1864 TALLOC_FREE(client_ntlmssp_state);
1865 return False;
1866 }
1867
1868 spnego_write_data(ctx, &to_server, &spnego);
1869 data_blob_free(&spnego.negTokenInit.mechToken);
1870
1871 to_server_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1872 data_blob_free(&to_server);
1873 x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1874 TALLOC_FREE(to_server_base64);
1875 return True;
1876 }
1877
1878 static void manage_client_ntlmssp_targ(struct spnego_data spnego)
1879 {
1880 NTSTATUS status;
1881 DATA_BLOB null_blob = data_blob_null;
1882 DATA_BLOB request;
1883 DATA_BLOB to_server;
1884 char *to_server_base64;
1885 TALLOC_CTX *ctx = talloc_tos();
1886
1887 DEBUG(10, ("Got spnego negTokenTarg with NTLMSSP\n"));
1888
1889 if (client_ntlmssp_state == NULL) {
1890 DEBUG(1, ("Got NTLMSSP tArg without a client state\n"));
1891 x_fprintf(x_stdout, "BH Got NTLMSSP tArg without a client state\n");
1892 return;
1893 }
1894
1895 if (spnego.negTokenTarg.negResult == SPNEGO_REJECT) {
1896 x_fprintf(x_stdout, "NA\n");
1897 TALLOC_FREE(client_ntlmssp_state);
1898 return;
1899 }
1900
1901 if (spnego.negTokenTarg.negResult == SPNEGO_ACCEPT_COMPLETED) {
1902 x_fprintf(x_stdout, "AF\n");
1903 TALLOC_FREE(client_ntlmssp_state);
1904 return;
1905 }
1906
1907 status = ntlmssp_update(client_ntlmssp_state,
1908 spnego.negTokenTarg.responseToken,
1909 &request);
1910
1911 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) && !NT_STATUS_IS_OK(status)) {
1912 DEBUG(1, ("Expected MORE_PROCESSING_REQUIRED or OK from "
1913 "ntlmssp_client_update, got: %s\n",
1914 nt_errstr(status)));
1915 x_fprintf(x_stdout, "BH Expected MORE_PROCESSING_REQUIRED from "
1916 "ntlmssp_client_update\n");
1917 data_blob_free(&request);
1918 TALLOC_FREE(client_ntlmssp_state);
1919 return;
1920 }
1921
1922 spnego.type = SPNEGO_NEG_TOKEN_TARG;
1923 spnego.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1924 spnego.negTokenTarg.supportedMech = (const char *)OID_NTLMSSP;
1925 spnego.negTokenTarg.responseToken = request;
1926 spnego.negTokenTarg.mechListMIC = null_blob;
1927
1928 spnego_write_data(ctx, &to_server, &spnego);
1929 data_blob_free(&request);
1930
1931 to_server_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1932 data_blob_free(&to_server);
1933 x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1934 TALLOC_FREE(to_server_base64);
1935 return;
1936 }
1937
1938 #ifdef HAVE_KRB5
1939
1940 static bool manage_client_krb5_init(struct spnego_data spnego)
1941 {
1942 char *principal;
1943 DATA_BLOB tkt, tkt_wrapped, to_server;
1944 DATA_BLOB session_key_krb5 = data_blob_null;
1945 struct spnego_data reply;
1946 char *reply_base64;
1947 int retval;
1948
1949 const char *my_mechs[] = {OID_KERBEROS5_OLD, NULL};
1950 ssize_t len;
1951 TALLOC_CTX *ctx = talloc_tos();
1952
1953 principal = spnego.negTokenInit.targetPrincipal;
1954
1955 /* We may not be allowed to use the server-supplied SPNEGO principal, or it may not have been supplied to us
1956 */
1957 if (!lp_client_use_spnego_principal() || strequal(principal, ADS_IGNORE_PRINCIPAL)) {
1958 principal = NULL;
1959 }
1960
1961 if (principal == NULL &&
1962 opt_target_service && opt_target_hostname && !is_ipaddress(opt_target_hostname)) {
1963 DEBUG(3,("manage_client_krb5_init: using target "
1964 "hostname not SPNEGO principal\n"));
1965
1966 principal = kerberos_get_principal_from_service_hostname(talloc_tos(),
1967 opt_target_service,
1968 opt_target_hostname);
1969
1970 if (!principal) {
1971 return false;
1972 }
1973
1974 DEBUG(3,("manage_client_krb5_init: guessed "
1975 "server principal=%s\n",
1976 principal ? principal : "<null>"));
1977 }
1978
1979 if (principal == NULL) {
1980 DEBUG(3,("manage_client_krb5_init: could not guess server principal\n"));
1981 return false;
1982 }
1983
1984 retval = cli_krb5_get_ticket(ctx, principal, 0,
1985 &tkt, &session_key_krb5,
1986 0, NULL, NULL, NULL);
1987 if (retval) {
1988 char *user = NULL;
1989
1990 /* Let's try to first get the TGT, for that we need a
1991 password. */
1992
1993 if (opt_password == NULL) {
1994 DEBUG(10, ("Requesting password\n"));
1995 x_fprintf(x_stdout, "PW\n");
1996 return True;
1997 }
1998
1999 user = talloc_asprintf(talloc_tos(), "%s@%s", opt_username, opt_domain);
2000 if (!user) {
2001 return false;
2002 }
2003
2004 if ((retval = kerberos_kinit_password(user, opt_password, 0, NULL))) {
2005 DEBUG(10, ("Requesting TGT failed: %s\n", error_message(retval)));
2006 return False;
2007 }
2008
2009 retval = cli_krb5_get_ticket(ctx, principal, 0,
2010 &tkt, &session_key_krb5,
2011 0, NULL, NULL, NULL);
2012 if (retval) {
2013 DEBUG(10, ("Kinit suceeded, but getting a ticket failed: %s\n", error_message(retval)));
2014 return False;
2015 }
2016
2017 }
2018
2019 /* wrap that up in a nice GSS-API wrapping */
2020 tkt_wrapped = spnego_gen_krb5_wrap(ctx, tkt, TOK_ID_KRB_AP_REQ);
2021
2022 data_blob_free(&session_key_krb5);
2023
2024 ZERO_STRUCT(reply);
2025
2026 reply.type = SPNEGO_NEG_TOKEN_INIT;
2027 reply.negTokenInit.mechTypes = my_mechs;
2028 reply.negTokenInit.reqFlags = data_blob_null;
2029 reply.negTokenInit.reqFlagsPadding = 0;
2030 reply.negTokenInit.mechToken = tkt_wrapped;
2031 reply.negTokenInit.mechListMIC = data_blob_null;
2032
2033 len = spnego_write_data(ctx, &to_server, &reply);
2034 data_blob_free(&tkt);
2035
2036 if (len == -1) {
2037 DEBUG(1, ("Could not write SPNEGO data blob\n"));
2038 return False;
2039 }
2040
2041 reply_base64 = base64_encode_data_blob(talloc_tos(), to_server);
2042 x_fprintf(x_stdout, "KK %s *\n", reply_base64);
2043
2044 TALLOC_FREE(reply_base64);
2045 data_blob_free(&to_server);
2046 DEBUG(10, ("sent GSS-SPNEGO KERBEROS5 negTokenInit\n"));
2047 return True;
2048 }
2049
2050 static void manage_client_krb5_targ(struct spnego_data spnego)
2051 {
2052 switch (spnego.negTokenTarg.negResult) {
2053 case SPNEGO_ACCEPT_INCOMPLETE:
2054 DEBUG(1, ("Got a Kerberos negTokenTarg with ACCEPT_INCOMPLETE\n"));
2055 x_fprintf(x_stdout, "BH Got a Kerberos negTokenTarg with "
2056 "ACCEPT_INCOMPLETE\n");
2057 break;
2058 case SPNEGO_ACCEPT_COMPLETED:
2059 DEBUG(10, ("Accept completed\n"));
2060 x_fprintf(x_stdout, "AF\n");
2061 break;
2062 case SPNEGO_REJECT:
2063 DEBUG(10, ("Rejected\n"));
2064 x_fprintf(x_stdout, "NA\n");
2065 break;
2066 default:
2067 DEBUG(1, ("Got an invalid negTokenTarg\n"));
2068 x_fprintf(x_stdout, "AF\n");
2069 }
2070 }
2071
2072 #endif
2073
2074 static void manage_gss_spnego_client_request(struct ntlm_auth_state *state,
2075 char *buf, int length)
2076 {
2077 DATA_BLOB request;
2078 struct spnego_data spnego;
2079 ssize_t len;
2080 TALLOC_CTX *ctx = talloc_tos();
2081
2082 if (!opt_username || !*opt_username) {
2083 x_fprintf(x_stderr, "username must be specified!\n\n");
2084 exit(1);
2085 }
2086
2087 if (strlen(buf) <= 3) {
2088 DEBUG(1, ("SPNEGO query [%s] too short\n", buf));
2089 x_fprintf(x_stdout, "BH SPNEGO query too short\n");
2090 return;
2091 }
2092
2093 request = base64_decode_data_blob(buf+3);
2094
2095 if (strncmp(buf, "PW ", 3) == 0) {
2096
2097 /* We asked for a password and obviously got it :-) */
2098
2099 opt_password = SMB_STRNDUP((const char *)request.data, request.length);
2100
2101 if (opt_password == NULL) {
2102 DEBUG(1, ("Out of memory\n"));
2103 x_fprintf(x_stdout, "BH Out of memory\n");
2104 data_blob_free(&request);
2105 return;
2106 }
2107
2108 x_fprintf(x_stdout, "OK\n");
2109 data_blob_free(&request);
2110 return;
2111 }
2112
2113 if ( (strncmp(buf, "TT ", 3) != 0) &&
2114 (strncmp(buf, "AF ", 3) != 0) &&
2115 (strncmp(buf, "NA ", 3) != 0) ) {
2116 DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
2117 x_fprintf(x_stdout, "BH SPNEGO request invalid\n");
2118 data_blob_free(&request);
2119 return;
2120 }
2121
2122 /* So we got a server challenge to generate a SPNEGO
2123 client-to-server request... */
2124
2125 len = spnego_read_data(ctx, request, &spnego);
2126 data_blob_free(&request);
2127
2128 if (len == -1) {
2129 DEBUG(1, ("Could not read SPNEGO data for [%s]\n", buf));
2130 x_fprintf(x_stdout, "BH Could not read SPNEGO data\n");
2131 return;
2132 }
2133
2134 if (spnego.type == SPNEGO_NEG_TOKEN_INIT) {
2135
2136 /* The server offers a list of mechanisms */
2137
2138 const char **mechType = (const char **)spnego.negTokenInit.mechTypes;
2139
2140 while (*mechType != NULL) {
2141
2142 #ifdef HAVE_KRB5
2143 if ( (strcmp(*mechType, OID_KERBEROS5_OLD) == 0) ||
2144 (strcmp(*mechType, OID_KERBEROS5) == 0) ) {
2145 if (manage_client_krb5_init(spnego))
2146 goto out;
2147 }
2148 #endif
2149
2150 if (strcmp(*mechType, OID_NTLMSSP) == 0) {
2151 if (manage_client_ntlmssp_init(spnego))
2152 goto out;
2153 }
2154
2155 mechType++;
2156 }
2157
2158 DEBUG(1, ("Server offered no compatible mechanism\n"));
2159 x_fprintf(x_stdout, "BH Server offered no compatible mechanism\n");
2160 return;
2161 }
2162
2163 if (spnego.type == SPNEGO_NEG_TOKEN_TARG) {
2164
2165 if (spnego.negTokenTarg.supportedMech == NULL) {
2166 /* On accept/reject Windows does not send the
2167 mechanism anymore. Handle that here and
2168 shut down the mechanisms. */
2169
2170 switch (spnego.negTokenTarg.negResult) {
2171 case SPNEGO_ACCEPT_COMPLETED:
2172 x_fprintf(x_stdout, "AF\n");
2173 break;
2174 case SPNEGO_REJECT:
2175 x_fprintf(x_stdout, "NA\n");
2176 break;
2177 default:
2178 DEBUG(1, ("Got a negTokenTarg with no mech and an "
2179 "unknown negResult: %d\n",
2180 spnego.negTokenTarg.negResult));
2181 x_fprintf(x_stdout, "BH Got a negTokenTarg with"
2182 " no mech and an unknown "
2183 "negResult\n");
2184 }
2185
2186 TALLOC_FREE(client_ntlmssp_state);
2187 goto out;
2188 }
2189
2190 if (strcmp(spnego.negTokenTarg.supportedMech,
2191 OID_NTLMSSP) == 0) {
2192 manage_client_ntlmssp_targ(spnego);
2193 goto out;
2194 }
2195
2196 #if HAVE_KRB5
2197 if (strcmp(spnego.negTokenTarg.supportedMech,
2198 OID_KERBEROS5_OLD) == 0) {
2199 manage_client_krb5_targ(spnego);
2200 goto out;
2201 }
2202 #endif
2203
2204 }
2205
2206 DEBUG(1, ("Got an SPNEGO token I could not handle [%s]!\n", buf));
2207 x_fprintf(x_stdout, "BH Got an SPNEGO token I could not handle\n");
2208 return;
2209
2210 out:
2211 spnego_free_data(&spnego);
2212 return;
2213 }
2214
2215 static void manage_ntlm_server_1_request(struct ntlm_auth_state *state,
2216 char *buf, int length)
2217 {
2218 char *request, *parameter;
2219 static DATA_BLOB challenge;
2220 static DATA_BLOB lm_response;
2221 static DATA_BLOB nt_response;
2222 static char *full_username;
2223 static char *username;
2224 static char *domain;
2225 static char *plaintext_password;
2226 static bool ntlm_server_1_user_session_key;
2227 static bool ntlm_server_1_lm_session_key;
2228
2229 if (strequal(buf, ".")) {
2230 if (!full_username && !username) {
2231 x_fprintf(x_stdout, "Error: No username supplied!\n");
2232 } else if (plaintext_password) {
2233 /* handle this request as plaintext */
2234 if (!full_username) {
2235 if (asprintf(&full_username, "%s%c%s", domain, winbind_separator(), username) == -1) {
2236 x_fprintf(x_stdout, "Error: Out of memory in asprintf!\n.\n");
2237 return;
2238 }
2239 }
2240 if (check_plaintext_auth(full_username, plaintext_password, False)) {
2241 x_fprintf(x_stdout, "Authenticated: Yes\n");
2242 } else {
2243 x_fprintf(x_stdout, "Authenticated: No\n");
2244 }
2245 } else if (!lm_response.data && !nt_response.data) {
2246 x_fprintf(x_stdout, "Error: No password supplied!\n");
2247 } else if (!challenge.data) {
2248 x_fprintf(x_stdout, "Error: No lanman-challenge supplied!\n");
2249 } else {
2250 char *error_string = NULL;
2251 uchar lm_key[8];
2252 uchar user_session_key[16];
2253 uint32 flags = 0;
2254
2255 if (full_username && !username) {
2256 fstring fstr_user;
2257 fstring fstr_domain;
2258
2259 if (!parse_ntlm_auth_domain_user(full_username, fstr_user, fstr_domain)) {
2260 /* username might be 'tainted', don't print into our new-line deleimianted stream */
2261 x_fprintf(x_stdout, "Error: Could not parse into domain and username\n");
2262 }
2263 SAFE_FREE(username);
2264 SAFE_FREE(domain);
2265 username = smb_xstrdup(fstr_user);
2266 domain = smb_xstrdup(fstr_domain);
2267 }
2268
2269 if (!domain) {
2270 domain = smb_xstrdup(get_winbind_domain());
2271 }
2272
2273 if (ntlm_server_1_lm_session_key)
2274 flags |= WBFLAG_PAM_LMKEY;
2275
2276 if (ntlm_server_1_user_session_key)
2277 flags |= WBFLAG_PAM_USER_SESSION_KEY;
2278
2279 if (!NT_STATUS_IS_OK(
2280 contact_winbind_auth_crap(username,
2281 domain,
2282 lp_netbios_name(),
2283 &challenge,
2284 &lm_response,
2285 &nt_response,
2286 flags, 0,
2287 lm_key,
2288 user_session_key,
2289 &error_string,
2290 NULL))) {
2291
2292 x_fprintf(x_stdout, "Authenticated: No\n");
2293 x_fprintf(x_stdout, "Authentication-Error: %s\n.\n", error_string);
2294 } else {
2295 static char zeros[16];
2296 char *hex_lm_key;
2297 char *hex_user_session_key;
2298
2299 x_fprintf(x_stdout, "Authenticated: Yes\n");
2300
2301 if (ntlm_server_1_lm_session_key
2302 && (memcmp(zeros, lm_key,
2303 sizeof(lm_key)) != 0)) {
2304 hex_lm_key = hex_encode_talloc(NULL,
2305 (const unsigned char *)lm_key,
2306 sizeof(lm_key));
2307 x_fprintf(x_stdout, "LANMAN-Session-Key: %s\n", hex_lm_key);
2308 TALLOC_FREE(hex_lm_key);
2309 }
2310
2311 if (ntlm_server_1_user_session_key
2312 && (memcmp(zeros, user_session_key,
2313 sizeof(user_session_key)) != 0)) {
2314 hex_user_session_key = hex_encode_talloc(NULL,
2315 (const unsigned char *)user_session_key,
2316 sizeof(user_session_key));
2317 x_fprintf(x_stdout, "User-Session-Key: %s\n", hex_user_session_key);
2318 TALLOC_FREE(hex_user_session_key);
2319 }
2320 }
2321 SAFE_FREE(error_string);
2322 }
2323 /* clear out the state */
2324 challenge = data_blob_null;
2325 nt_response = data_blob_null;
2326 lm_response = data_blob_null;
2327 SAFE_FREE(full_username);
2328 SAFE_FREE(username);
2329 SAFE_FREE(domain);
2330 SAFE_FREE(plaintext_password);
2331 ntlm_server_1_user_session_key = False;
2332 ntlm_server_1_lm_session_key = False;
2333 x_fprintf(x_stdout, ".\n");
2334
2335 return;
2336 }
2337
2338 request = buf;
2339
2340 /* Indicates a base64 encoded structure */
2341 parameter = strstr_m(request, ":: ");
2342 if (!parameter) {
2343 parameter = strstr_m(request, ": ");
2344
2345 if (!parameter) {
2346 DEBUG(0, ("Parameter not found!\n"));
2347 x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
2348 return;
2349 }
2350
2351 parameter[0] ='\0';
2352 parameter++;
2353 parameter[0] ='\0';
2354 parameter++;
2355
2356 } else {
2357 parameter[0] ='\0';
2358 parameter++;
2359 parameter[0] ='\0';
2360 parameter++;
2361 parameter[0] ='\0';
2362 parameter++;
2363
2364 base64_decode_inplace(parameter);
2365 }
2366
2367 if (strequal(request, "LANMAN-Challenge")) {
2368 challenge = strhex_to_data_blob(NULL, parameter);
2369 if (challenge.length != 8) {
2370 x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 8)\n.\n",
2371 parameter,
2372 (int)challenge.length);
2373 challenge = data_blob_null;
2374 }
2375 } else if (strequal(request, "NT-Response")) {
2376 nt_response = strhex_to_data_blob(NULL, parameter);
2377 if (nt_response.length < 24) {
2378 x_fprintf(x_stdout, "Error: hex decode of %s failed! (only got %d bytes, needed at least 24)\n.\n",
2379 parameter,
2380 (int)nt_response.length);
2381 nt_response = data_blob_null;
2382 }
2383 } else if (strequal(request, "LANMAN-Response")) {
2384 lm_response = strhex_to_data_blob(NULL, parameter);
2385 if (lm_response.length != 24) {
2386 x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 24)\n.\n",
2387 parameter,
2388 (int)lm_response.length);
2389 lm_response = data_blob_null;
2390 }
2391 } else if (strequal(request, "Password")) {
2392 plaintext_password = smb_xstrdup(parameter);
2393 } else if (strequal(request, "NT-Domain")) {
2394 domain = smb_xstrdup(parameter);
2395 } else if (strequal(request, "Username")) {
2396 username = smb_xstrdup(parameter);
2397 } else if (strequal(request, "Full-Username")) {
2398 full_username = smb_xstrdup(parameter);
2399 } else if (strequal(request, "Request-User-Session-Key")) {
2400 ntlm_server_1_user_session_key = strequal(parameter, "Yes");
2401 } else if (strequal(request, "Request-LanMan-Session-Key")) {
2402 ntlm_server_1_lm_session_key = strequal(parameter, "Yes");
2403 } else {
2404 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
2405 }
2406 }
2407
2408 static void manage_ntlm_change_password_1_request(struct ntlm_auth_state *state,
2409 char *buf, int length)
2410 {
2411 char *request, *parameter;
2412 static DATA_BLOB new_nt_pswd;
2413 static DATA_BLOB old_nt_hash_enc;
2414 static DATA_BLOB new_lm_pswd;
2415 static DATA_BLOB old_lm_hash_enc;
2416 static char *full_username = NULL;
2417 static char *username = NULL;
2418 static char *domain = NULL;
2419 static char *newpswd = NULL;
2420 static char *oldpswd = NULL;
2421
2422 if (strequal(buf, ".")) {
2423 if(newpswd && oldpswd) {
2424 uchar old_nt_hash[16];
2425 uchar old_lm_hash[16];
2426 uchar new_nt_hash[16];
2427 uchar new_lm_hash[16];
2428
2429 new_nt_pswd = data_blob(NULL, 516);
2430 old_nt_hash_enc = data_blob(NULL, 16);
2431
2432 /* Calculate the MD4 hash (NT compatible) of the
2433 * password */
2434 E_md4hash(oldpswd, old_nt_hash);
2435 E_md4hash(newpswd, new_nt_hash);
2436
2437 /* E_deshash returns false for 'long'
2438 passwords (> 14 DOS chars).
2439
2440 Therefore, don't send a buffer
2441 encrypted with the truncated hash
2442 (it could allow an even easier
2443 attack on the password)
2444
2445 Likewise, obey the admin's restriction
2446 */
2447
2448 if (lp_client_lanman_auth() &&
2449 E_deshash(newpswd, new_lm_hash) &&
2450 E_deshash(oldpswd, old_lm_hash)) {
2451 new_lm_pswd = data_blob(NULL, 516);
2452 old_lm_hash_enc = data_blob(NULL, 16);
2453 encode_pw_buffer(new_lm_pswd.data, newpswd,
2454 STR_UNICODE);
2455
2456 arcfour_crypt(new_lm_pswd.data, old_nt_hash, 516);
2457 E_old_pw_hash(new_nt_hash, old_lm_hash,
2458 old_lm_hash_enc.data);
2459 } else {
2460 new_lm_pswd.data = NULL;
2461 new_lm_pswd.length = 0;
2462 old_lm_hash_enc.data = NULL;
2463 old_lm_hash_enc.length = 0;
2464 }
2465
2466 encode_pw_buffer(new_nt_pswd.data, newpswd,
2467 STR_UNICODE);
2468
2469 arcfour_crypt(new_nt_pswd.data, old_nt_hash, 516);
2470 E_old_pw_hash(new_nt_hash, old_nt_hash,
2471 old_nt_hash_enc.data);
2472 }
2473
2474 if (!full_username && !username) {
2475 x_fprintf(x_stdout, "Error: No username supplied!\n");
2476 } else if ((!new_nt_pswd.data || !old_nt_hash_enc.data) &&
2477 (!new_lm_pswd.data || old_lm_hash_enc.data) ) {
2478 x_fprintf(x_stdout, "Error: No NT or LM password "
2479 "blobs supplied!\n");
2480 } else {
2481 char *error_string = NULL;
2482
2483 if (full_username && !username) {
2484 fstring fstr_user;
2485 fstring fstr_domain;
2486
2487 if (!parse_ntlm_auth_domain_user(full_username,
2488 fstr_user,
2489 fstr_domain)) {
2490 /* username might be 'tainted', don't
2491 * print into our new-line
2492 * deleimianted stream */
2493 x_fprintf(x_stdout, "Error: Could not "
2494 "parse into domain and "
2495 "username\n");
2496 SAFE_FREE(username);
2497 username = smb_xstrdup(full_username);
2498 } else {
2499 SAFE_FREE(username);
2500 SAFE_FREE(domain);
2501 username = smb_xstrdup(fstr_user);
2502 domain = smb_xstrdup(fstr_domain);
2503 }
2504
2505 }
2506
2507 if(!NT_STATUS_IS_OK(contact_winbind_change_pswd_auth_crap(
2508 username, domain,
2509 new_nt_pswd,
2510 old_nt_hash_enc,
2511 new_lm_pswd,
2512 old_lm_hash_enc,
2513 &error_string))) {
2514 x_fprintf(x_stdout, "Password-Change: No\n");
2515 x_fprintf(x_stdout, "Password-Change-Error: "
2516 "%s\n.\n", error_string);
2517 } else {
2518 x_fprintf(x_stdout, "Password-Change: Yes\n");
2519 }
2520
2521 SAFE_FREE(error_string);
2522 }
2523 /* clear out the state */
2524 new_nt_pswd = data_blob_null;
2525 old_nt_hash_enc = data_blob_null;
2526 new_lm_pswd = data_blob_null;
2527 old_nt_hash_enc = data_blob_null;
2528 SAFE_FREE(full_username);
2529 SAFE_FREE(username);
2530 SAFE_FREE(domain);
2531 SAFE_FREE(newpswd);
2532 SAFE_FREE(oldpswd);
2533 x_fprintf(x_stdout, ".\n");
2534
2535 return;
2536 }
2537
2538 request = buf;
2539
2540 /* Indicates a base64 encoded structure */
2541 parameter = strstr_m(request, ":: ");
2542 if (!parameter) {
2543 parameter = strstr_m(request, ": ");
2544
2545 if (!parameter) {
2546 DEBUG(0, ("Parameter not found!\n"));
2547 x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
2548 return;
2549 }
2550
2551 parameter[0] ='\0';
2552 parameter++;
2553 parameter[0] ='\0';
2554 parameter++;
2555 } else {
2556 parameter[0] ='\0';
2557 parameter++;
2558 parameter[0] ='\0';
2559 parameter++;
2560 parameter[0] ='\0';
2561 parameter++;
2562
2563 base64_decode_inplace(parameter);
2564 }
2565
2566 if (strequal(request, "new-nt-password-blob")) {
2567 new_nt_pswd = strhex_to_data_blob(NULL, parameter);
2568 if (new_nt_pswd.length != 516) {
2569 x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2570 "(got %d bytes, expected 516)\n.\n",
2571 parameter,
2572 (int)new_nt_pswd.length);
2573 new_nt_pswd = data_blob_null;
2574 }
2575 } else if (strequal(request, "old-nt-hash-blob")) {
2576 old_nt_hash_enc = strhex_to_data_blob(NULL, parameter);
2577 if (old_nt_hash_enc.length != 16) {
2578 x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2579 "(got %d bytes, expected 16)\n.\n",
2580 parameter,
2581 (int)old_nt_hash_enc.length);
2582 old_nt_hash_enc = data_blob_null;
2583 }
2584 } else if (strequal(request, "new-lm-password-blob")) {
2585 new_lm_pswd = strhex_to_data_blob(NULL, parameter);
2586 if (new_lm_pswd.length != 516) {
2587 x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2588 "(got %d bytes, expected 516)\n.\n",
2589 parameter,
2590 (int)new_lm_pswd.length);
2591 new_lm_pswd = data_blob_null;
2592 }
2593 }
2594 else if (strequal(request, "old-lm-hash-blob")) {
2595 old_lm_hash_enc = strhex_to_data_blob(NULL, parameter);
2596 if (old_lm_hash_enc.length != 16)
2597 {
2598 x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2599 "(got %d bytes, expected 16)\n.\n",
2600 parameter,
2601 (int)old_lm_hash_enc.length);
2602 old_lm_hash_enc = data_blob_null;
2603 }
2604 } else if (strequal(request, "nt-domain")) {
2605 domain = smb_xstrdup(parameter);
2606 } else if(strequal(request, "username")) {
2607 username = smb_xstrdup(parameter);
2608 } else if(strequal(request, "full-username")) {
2609 username = smb_xstrdup(parameter);
2610 } else if(strequal(request, "new-password")) {
2611 newpswd = smb_xstrdup(parameter);
2612 } else if (strequal(request, "old-password")) {
2613 oldpswd = smb_xstrdup(parameter);
2614 } else {
2615 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
2616 }
2617 }
2618
2619 static void manage_squid_request(struct ntlm_auth_state *state,
2620 stdio_helper_function fn)
2621 {
2622 char *buf;
2623 char tmp[INITIAL_BUFFER_SIZE+1];
2624 int length, buf_size = 0;
2625 char *c;
2626
2627 buf = talloc_strdup(state->mem_ctx, "");
2628 if (!buf) {
2629 DEBUG(0, ("Failed to allocate input buffer.\n"));
2630 x_fprintf(x_stderr, "ERR\n");
2631 exit(1);
2632 }
2633
2634 do {
2635
2636 /* this is not a typo - x_fgets doesn't work too well under
2637 * squid */
2638 if (fgets(tmp, sizeof(tmp)-1, stdin) == NULL) {
2639 if (ferror(stdin)) {
2640 DEBUG(1, ("fgets() failed! dying..... errno=%d "
2641 "(%s)\n", ferror(stdin),
2642 strerror(ferror(stdin))));
2643
2644 exit(1);
2645 }
2646 exit(0);
2647 }
2648
2649 buf = talloc_strdup_append_buffer(buf, tmp);
2650 buf_size += INITIAL_BUFFER_SIZE;
2651
2652 if (buf_size > MAX_BUFFER_SIZE) {
2653 DEBUG(2, ("Oversized message\n"));
2654 x_fprintf(x_stderr, "ERR\n");
2655 talloc_free(buf);
2656 return;
2657 }
2658
2659 c = strchr(buf, '\n');
2660 } while (c == NULL);
2661
2662 *c = '\0';
2663 length = c-buf;
2664
2665 DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
2666
2667 if (buf[0] == '\0') {
2668 DEBUG(2, ("Invalid Request\n"));
2669 x_fprintf(x_stderr, "ERR\n");
2670 talloc_free(buf);
2671 return;
2672 }
2673
2674 fn(state, buf, length);
2675 talloc_free(buf);
2676 }
2677
2678
2679 static void squid_stream(enum stdio_helper_mode stdio_mode, stdio_helper_function fn) {
2680 TALLOC_CTX *mem_ctx;
2681 struct ntlm_auth_state *state;
2682
2683 /* initialize FDescs */
2684 x_setbuf(x_stdout, NULL);
2685 x_setbuf(x_stderr, NULL);
2686
2687 mem_ctx = talloc_init("ntlm_auth");
2688 if (!mem_ctx) {
2689 DEBUG(0, ("squid_stream: Failed to create talloc context\n"));
2690 x_fprintf(x_stderr, "ERR\n");
2691 exit(1);
2692 }
2693
2694 state = talloc_zero(mem_ctx, struct ntlm_auth_state);
2695 if (!state) {
2696 DEBUG(0, ("squid_stream: Failed to talloc ntlm_auth_state\n"));
2697 x_fprintf(x_stderr, "ERR\n");
2698 exit(1);
2699 }
2700
2701 state->mem_ctx = mem_ctx;
2702 state->helper_mode = stdio_mode;
2703
2704 while(1) {
2705 TALLOC_CTX *frame = talloc_stackframe();
2706 manage_squid_request(state, fn);
2707 TALLOC_FREE(frame);
2708 }
2709 }
2710
2711
2712 /* Authenticate a user with a challenge/response */
2713
2714 static bool check_auth_crap(void)
2715 {
2716 NTSTATUS nt_status;
2717 uint32 flags = 0;
2718 char lm_key[8];
2719 char user_session_key[16];
2720 char *hex_lm_key;
2721 char *hex_user_session_key;
2722 char *error_string;
2723 static uint8 zeros[16];
2724
2725 x_setbuf(x_stdout, NULL);
2726
2727 if (request_lm_key)
2728 flags |= WBFLAG_PAM_LMKEY;
2729
2730 if (request_user_session_key)
2731 flags |= WBFLAG_PAM_USER_SESSION_KEY;
2732
2733 flags |= WBFLAG_PAM_NT_STATUS_SQUASH;
2734
2735 nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
2736 opt_workstation,
2737 &opt_challenge,
2738 &opt_lm_response,
2739 &opt_nt_response,
2740 flags, 0,
2741 (unsigned char *)lm_key,
2742 (unsigned char *)user_session_key,
2743 &error_string, NULL);
2744
2745 if (!NT_STATUS_IS_OK(nt_status)) {
2746 x_fprintf(x_stdout, "%s (0x%x)\n",
2747 error_string,
2748 NT_STATUS_V(nt_status));
2749 SAFE_FREE(error_string);
2750 return False;
2751 }
2752
2753 if (request_lm_key
2754 && (memcmp(zeros, lm_key,
2755 sizeof(lm_key)) != 0)) {
2756 hex_lm_key = hex_encode_talloc(talloc_tos(), (const unsigned char *)lm_key,
2757 sizeof(lm_key));
2758 x_fprintf(x_stdout, "LM_KEY: %s\n", hex_lm_key);
2759 TALLOC_FREE(hex_lm_key);
2760 }
2761 if (request_user_session_key
2762 && (memcmp(zeros, user_session_key,
2763 sizeof(user_session_key)) != 0)) {
2764 hex_user_session_key = hex_encode_talloc(talloc_tos(), (const unsigned char *)user_session_key,
2765 sizeof(user_session_key));
2766 x_fprintf(x_stdout, "NT_KEY: %s\n", hex_user_session_key);
2767 TALLOC_FREE(hex_user_session_key);
2768 }
2769
2770 return True;
2771 }
2772
2773 /* Main program */
2774
2775 enum {
2776 OPT_USERNAME = 1000,
2777 OPT_DOMAIN,
2778 OPT_WORKSTATION,
2779 OPT_CHALLENGE,
2780 OPT_RESPONSE,
2781 OPT_LM,
2782 OPT_NT,
2783 OPT_PASSWORD,
2784 OPT_LM_KEY,
2785 OPT_USER_SESSION_KEY,
2786 OPT_DIAGNOSTICS,
2787 OPT_REQUIRE_MEMBERSHIP,
2788 OPT_USE_CACHED_CREDS,
2789 OPT_PAM_WINBIND_CONF,
2790 OPT_TARGET_SERVICE,
2791 OPT_TARGET_HOSTNAME
2792 };
2793
2794 int main(int argc, const char **argv)
2795 {
2796 TALLOC_CTX *frame = talloc_stackframe();
2797 int opt;
2798 static const char *helper_protocol;
2799 static int diagnostics;
2800
2801 static const char *hex_challenge;
2802 static const char *hex_lm_response;
2803 static const char *hex_nt_response;
2804
2805 poptContext pc;
2806
2807 /* NOTE: DO NOT change this interface without considering the implications!
2808 This is an external interface, which other programs will use to interact
2809 with this helper.
2810 */
2811
2812 /* We do not use single-letter command abbreviations, because they harm future
2813 interface stability. */
2814
2815 struct poptOption long_options[] = {
2816 POPT_AUTOHELP
2817 { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
2818 { "username", 0, POPT_ARG_STRING, &opt_username, OPT_USERNAME, "username"},
2819 { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
2820 { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
2821 { "challenge", 0, POPT_ARG_STRING, &hex_challenge, OPT_CHALLENGE, "challenge (HEX encoded)"},
2822 { "lm-response", 0, POPT_ARG_STRING, &hex_lm_response, OPT_LM, "LM Response to the challenge (HEX encoded)"},
2823 { "nt-response", 0, POPT_ARG_STRING, &hex_nt_response, OPT_NT, "NT or NTLMv2 Response to the challenge (HEX encoded)"},
2824 { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
2825 { "request-lm-key", 0, POPT_ARG_NONE, &request_lm_key, OPT_LM_KEY, "Retrieve LM session key"},
2826 { "request-nt-key", 0, POPT_ARG_NONE, &request_user_session_key, OPT_USER_SESSION_KEY, "Retrieve User (NT) session key"},
2827 { "use-cached-creds", 0, POPT_ARG_NONE, &use_cached_creds, OPT_USE_CACHED_CREDS, "Use cached credentials if no password is given"},
2828 { "diagnostics", 0, POPT_ARG_NONE, &diagnostics,
2829 OPT_DIAGNOSTICS,
2830 "Perform diagnostics on the authentication chain"},
2831 { "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" },
2832 { "pam-winbind-conf", 0, POPT_ARG_STRING, &opt_pam_winbind_conf, OPT_PAM_WINBIND_CONF, "Require that request must set WBFLAG_PAM_CONTACT_TRUSTDOM when krb5 auth is required" },
2833 { "target-service", 0, POPT_ARG_STRING, &opt_target_service, OPT_TARGET_SERVICE, "Target service (eg http)" },
2834 { "target-hostname", 0, POPT_ARG_STRING, &opt_target_hostname, OPT_TARGET_HOSTNAME, "Target hostname" },
2835 POPT_COMMON_CONFIGFILE
2836 POPT_COMMON_VERSION
2837 POPT_TABLEEND
2838 };
2839
2840 /* Samba client initialisation */
2841 load_case_tables();
2842
2843 setup_logging("ntlm_auth", DEBUG_STDERR);
2844
2845 /* Parse options */
2846
2847 pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
2848
2849 /* Parse command line options */
2850
2851 if (argc == 1) {
2852 poptPrintHelp(pc, stderr, 0);
2853 return 1;
2854 }
2855
2856 while((opt = poptGetNextOpt(pc)) != -1) {
2857 /* Get generic config options like --configfile */
2858 }
2859
2860 poptFreeContext(pc);
2861
2862 if (!lp_load_global(get_dyn_CONFIGFILE())) {
2863 d_fprintf(stderr, "ntlm_auth: error opening config file %s. Error was %s\n",
2864 get_dyn_CONFIGFILE(), strerror(errno));
2865 exit(1);
2866 }
2867
2868 pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
2869 POPT_CONTEXT_KEEP_FIRST);
2870
2871 while((opt = poptGetNextOpt(pc)) != -1) {
2872 switch (opt) {
2873 case OPT_CHALLENGE:
2874 opt_challenge = strhex_to_data_blob(NULL, hex_challenge);
2875 if (opt_challenge.length != 8) {
2876 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2877 hex_challenge,
2878 (int)opt_challenge.length);
2879 exit(1);
2880 }
2881 break;
2882 case OPT_LM:
2883 opt_lm_response = strhex_to_data_blob(NULL, hex_lm_response);
2884 if (opt_lm_response.length != 24) {
2885 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2886 hex_lm_response,
2887 (int)opt_lm_response.length);
2888 exit(1);
2889 }
2890 break;
2891
2892 case OPT_NT:
2893 opt_nt_response = strhex_to_data_blob(NULL, hex_nt_response);
2894 if (opt_nt_response.length < 24) {
2895 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2896 hex_nt_response,
2897 (int)opt_nt_response.length);
2898 exit(1);
2899 }
2900 break;
2901
2902 case OPT_REQUIRE_MEMBERSHIP:
2903 if (strncasecmp_m("S-", require_membership_of, 2) == 0) {
2904 require_membership_of_sid = require_membership_of;
2905 }
2906 break;
2907 }
2908 }
2909
2910 if (opt_username) {
2911 char *domain = SMB_STRDUP(opt_username);
2912 char *p = strchr_m(domain, *lp_winbind_separator());
2913 if (p) {
2914 opt_username = p+1;
2915 *p = '\0';
2916 if (opt_domain && !strequal(opt_domain, domain)) {
2917 x_fprintf(x_stderr, "Domain specified in username (%s) "
2918 "doesn't match specified domain (%s)!\n\n",
2919 domain, opt_domain);
2920 poptPrintHelp(pc, stderr, 0);
2921 exit(1);
2922 }
2923 opt_domain = domain;
2924 } else {
2925 SAFE_FREE(domain);
2926 }
2927 }
2928
2929 /* Note: if opt_domain is "" then send no domain */
2930 if (opt_domain == NULL) {
2931 opt_domain = get_winbind_domain();
2932 }
2933
2934 if (opt_workstation == NULL) {
2935 opt_workstation = "";
2936 }
2937
2938 if (helper_protocol) {
2939 int i;
2940 for (i=0; i<NUM_HELPER_MODES; i++) {
2941 if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
2942 squid_stream(stdio_helper_protocols[i].mode, stdio_helper_protocols[i].fn);
2943 exit(0);
2944 }
2945 }
2946 x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol);
2947
2948 for (i=0; i<NUM_HELPER_MODES; i++) {
2949 x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name);
2950 }
2951
2952 exit(1);
2953 }
2954
2955 if (!opt_username || !*opt_username) {
2956 x_fprintf(x_stderr, "username must be specified!\n\n");
2957 poptPrintHelp(pc, stderr, 0);
2958 exit(1);
2959 }
2960
2961 if (opt_challenge.length) {
2962 if (!check_auth_crap()) {
2963 exit(1);
2964 }
2965 exit(0);
2966 }
2967
2968 if (!opt_password) {
2969 opt_password = getpass("password: ");
2970 }
2971
2972 if (diagnostics) {
2973 if (!diagnose_ntlm_auth()) {
2974 return 1;
2975 }
2976 } else {
2977 fstring user;
2978
2979 fstr_sprintf(user, "%s%c%s", opt_domain, winbind_separator(), opt_username);
2980 if (!check_plaintext_auth(user, opt_password, True)) {
2981 return 1;
2982 }
2983 }
2984
2985 /* Exit code */
2986
2987 poptFreeContext(pc);
2988 TALLOC_FREE(frame);
2989 return 0;
2990 }
reg import