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lib: Change uid_wrapper to preloadable version.
[Samba/wip.git] / source3 / utils / ntlm_auth.c
blobf0cd24bf58fce9592abd0bd283942257b16994ea
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 Copyright (C) Simo Sorce 2010
12
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 3 of the License, or
16 (at your option) any later version.
17
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
22
23 You should have received a copy of the GNU General Public License
24 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 */
26
27 #include "includes.h"
28 #include "lib/param/param.h"
29 #include "popt_common.h"
30 #include "utils/ntlm_auth.h"
31 #include "../libcli/auth/libcli_auth.h"
32 #include "../libcli/auth/spnego.h"
33 #include "auth/ntlmssp/ntlmssp.h"
34 #include "auth/gensec/gensec.h"
35 #include "auth/gensec/gensec_internal.h"
36 #include "auth/credentials/credentials.h"
37 #include "librpc/crypto/gse.h"
38 #include "smb_krb5.h"
39 #include <iniparser.h>
40 #include "../lib/crypto/arcfour.h"
41 #include "libads/kerberos_proto.h"
42 #include "nsswitch/winbind_client.h"
43 #include "librpc/gen_ndr/krb5pac.h"
44 #include "../lib/util/asn1.h"
45 #include "auth/common_auth.h"
46 #include "source3/include/auth.h"
47 #include "source3/auth/proto.h"
48 #include "nsswitch/libwbclient/wbclient.h"
49 #include "lib/param/loadparm.h"
50
51 #if HAVE_KRB5
52 #include "auth/kerberos/pac_utils.h"
53 #endif
54
55 #ifndef PAM_WINBIND_CONFIG_FILE
56 #define PAM_WINBIND_CONFIG_FILE "/etc/security/pam_winbind.conf"
57 #endif
58
59 #define WINBIND_KRB5_AUTH 0x00000080
60
61 #undef DBGC_CLASS
62 #define DBGC_CLASS DBGC_WINBIND
63
64 #define INITIAL_BUFFER_SIZE 300
65 #define MAX_BUFFER_SIZE 630000
66
67 enum stdio_helper_mode {
68 SQUID_2_4_BASIC,
69 SQUID_2_5_BASIC,
70 SQUID_2_5_NTLMSSP,
71 NTLMSSP_CLIENT_1,
72 GSS_SPNEGO_SERVER,
73 GSS_SPNEGO_CLIENT,
74 NTLM_SERVER_1,
75 NTLM_CHANGE_PASSWORD_1,
76 NUM_HELPER_MODES
77 };
78
79 enum ntlm_auth_cli_state {
80 CLIENT_INITIAL = 0,
81 CLIENT_RESPONSE,
82 CLIENT_FINISHED,
83 CLIENT_ERROR
84 };
85
86 struct ntlm_auth_state {
87 TALLOC_CTX *mem_ctx;
88 enum stdio_helper_mode helper_mode;
89 enum ntlm_auth_cli_state cli_state;
90 struct ntlmssp_state *ntlmssp_state;
91 uint32_t neg_flags;
92 char *want_feature_list;
93 bool have_session_key;
94 DATA_BLOB session_key;
95 DATA_BLOB initial_message;
96 void *gensec_private_1;
97 };
98 typedef void (*stdio_helper_function)(enum stdio_helper_mode stdio_helper_mode,
99 struct loadparm_context *lp_ctx,
100 struct ntlm_auth_state *state, char *buf,
101 int length, void **private2);
102
103 static void manage_squid_request(enum stdio_helper_mode stdio_helper_mode,
104 struct loadparm_context *lp_ctx,
105 struct ntlm_auth_state *state,
106 stdio_helper_function fn, void **private2);
107
108 static void manage_squid_basic_request (enum stdio_helper_mode stdio_helper_mode,
109 struct loadparm_context *lp_ctx,
110 struct ntlm_auth_state *state,
111 char *buf, int length, void **private2);
112
113 static void manage_squid_ntlmssp_request (enum stdio_helper_mode stdio_helper_mode,
114 struct loadparm_context *lp_ctx,
115 struct ntlm_auth_state *state,
116 char *buf, int length, void **private2);
117
118 static void manage_client_ntlmssp_request (enum stdio_helper_mode stdio_helper_mode,
119 struct loadparm_context *lp_ctx,
120 struct ntlm_auth_state *state,
121 char *buf, int length, void **private2);
122
123 static void manage_gss_spnego_request (enum stdio_helper_mode stdio_helper_mode,
124 struct loadparm_context *lp_ctx,
125 struct ntlm_auth_state *state,
126 char *buf, int length, void **private2);
127
128 static void manage_gss_spnego_client_request (enum stdio_helper_mode stdio_helper_mode,
129 struct loadparm_context *lp_ctx,
130 struct ntlm_auth_state *state,
131 char *buf, int length, void **private2);
132
133 static void manage_ntlm_server_1_request (enum stdio_helper_mode stdio_helper_mode,
134 struct loadparm_context *lp_ctx,
135 struct ntlm_auth_state *state,
136 char *buf, int length, void **private2);
137
138 static void manage_ntlm_change_password_1_request(enum stdio_helper_mode stdio_helper_mode,
139 struct loadparm_context *lp_ctx,
140 struct ntlm_auth_state *state,
141 char *buf, int length, void **private2);
142
143 static const struct {
144 enum stdio_helper_mode mode;
145 const char *name;
146 stdio_helper_function fn;
147 } stdio_helper_protocols[] = {
148 { SQUID_2_4_BASIC, "squid-2.4-basic", manage_squid_basic_request},
149 { SQUID_2_5_BASIC, "squid-2.5-basic", manage_squid_basic_request},
150 { SQUID_2_5_NTLMSSP, "squid-2.5-ntlmssp", manage_squid_ntlmssp_request},
151 { NTLMSSP_CLIENT_1, "ntlmssp-client-1", manage_client_ntlmssp_request},
152 { GSS_SPNEGO_SERVER, "gss-spnego", manage_gss_spnego_request},
153 { GSS_SPNEGO_CLIENT, "gss-spnego-client", manage_gss_spnego_client_request},
154 { NTLM_SERVER_1, "ntlm-server-1", manage_ntlm_server_1_request},
155 { NTLM_CHANGE_PASSWORD_1, "ntlm-change-password-1", manage_ntlm_change_password_1_request},
156 { NUM_HELPER_MODES, NULL, NULL}
157 };
158
159 const char *opt_username;
160 const char *opt_domain;
161 const char *opt_workstation;
162 const char *opt_password;
163 static DATA_BLOB opt_challenge;
164 static DATA_BLOB opt_lm_response;
165 static DATA_BLOB opt_nt_response;
166 static int request_lm_key;
167 static int request_user_session_key;
168 static int use_cached_creds;
169
170 static const char *require_membership_of;
171 static const char *require_membership_of_sid;
172 static const char *opt_pam_winbind_conf;
173
174 const char *opt_target_service;
175 const char *opt_target_hostname;
176
177
178 /* This is a bit hairy, but the basic idea is to do a password callback
179 to the calling application. The callback comes from within gensec */
180
181 static void manage_gensec_get_pw_request(enum stdio_helper_mode stdio_helper_mode,
182 struct loadparm_context *lp_ctx,
183 struct ntlm_auth_state *state, char *buf, int length,
184 void **password)
185 {
186 DATA_BLOB in;
187 if (strlen(buf) < 2) {
188 DEBUG(1, ("query [%s] invalid", buf));
189 x_fprintf(x_stdout, "BH Query invalid\n");
190 return;
191 }
192
193 if (strlen(buf) > 3) {
194 in = base64_decode_data_blob(buf + 3);
195 } else {
196 in = data_blob(NULL, 0);
197 }
198
199 if (strncmp(buf, "PW ", 3) == 0) {
200
201 *password = talloc_strndup(NULL,
202 (const char *)in.data, in.length);
203
204 if (*password == NULL) {
205 DEBUG(1, ("Out of memory\n"));
206 x_fprintf(x_stdout, "BH Out of memory\n");
207 data_blob_free(&in);
208 return;
209 }
210
211 x_fprintf(x_stdout, "OK\n");
212 data_blob_free(&in);
213 return;
214 }
215 DEBUG(1, ("Asked for (and expected) a password\n"));
216 x_fprintf(x_stdout, "BH Expected a password\n");
217 data_blob_free(&in);
218 }
219
220 /**
221 * Callback for password credentials. This is not async, and when
222 * GENSEC and the credentials code is made async, it will look rather
223 * different.
224 */
225
226 static const char *get_password(struct cli_credentials *credentials)
227 {
228 char *password = NULL;
229
230 /* Ask for a password */
231 x_fprintf(x_stdout, "PW\n");
232
233 manage_squid_request(NUM_HELPER_MODES /* bogus */, NULL, NULL, manage_gensec_get_pw_request, (void **)&password);
234 talloc_steal(credentials, password);
235 return password;
236 }
237
238 /**
239 * A limited set of features are defined with text strings as needed
240 * by ntlm_auth
241 *
242 */
243 static void gensec_want_feature_list(struct gensec_security *state, char* feature_list)
244 {
245 if (in_list("NTLMSSP_FEATURE_SESSION_KEY", feature_list, true)) {
246 DEBUG(10, ("want GENSEC_FEATURE_SESSION_KEY\n"));
247 gensec_want_feature(state, GENSEC_FEATURE_SESSION_KEY);
248 }
249 if (in_list("NTLMSSP_FEATURE_SIGN", feature_list, true)) {
250 DEBUG(10, ("want GENSEC_FEATURE_SIGN\n"));
251 gensec_want_feature(state, GENSEC_FEATURE_SIGN);
252 }
253 if (in_list("NTLMSSP_FEATURE_SEAL", feature_list, true)) {
254 DEBUG(10, ("want GENSEC_FEATURE_SEAL\n"));
255 gensec_want_feature(state, GENSEC_FEATURE_SEAL);
256 }
257 }
258
259 static char winbind_separator(void)
260 {
261 struct winbindd_response response;
262 static bool got_sep;
263 static char sep;
264
265 if (got_sep)
266 return sep;
267
268 ZERO_STRUCT(response);
269
270 /* Send off request */
271
272 if (winbindd_request_response(WINBINDD_INFO, NULL, &response) !=
273 NSS_STATUS_SUCCESS) {
274 d_printf("could not obtain winbind separator!\n");
275 return *lp_winbind_separator();
276 }
277
278 sep = response.data.info.winbind_separator;
279 got_sep = True;
280
281 if (!sep) {
282 d_printf("winbind separator was NULL!\n");
283 return *lp_winbind_separator();
284 }
285
286 return sep;
287 }
288
289 const char *get_winbind_domain(void)
290 {
291 struct winbindd_response response;
292
293 static fstring winbind_domain;
294 if (*winbind_domain) {
295 return winbind_domain;
296 }
297
298 ZERO_STRUCT(response);
299
300 /* Send off request */
301
302 if (winbindd_request_response(WINBINDD_DOMAIN_NAME, NULL, &response) !=
303 NSS_STATUS_SUCCESS) {
304 DEBUG(1, ("could not obtain winbind domain name!\n"));
305 return lp_workgroup();
306 }
307
308 fstrcpy(winbind_domain, response.data.domain_name);
309
310 return winbind_domain;
311
312 }
313
314 const char *get_winbind_netbios_name(void)
315 {
316 struct winbindd_response response;
317
318 static fstring winbind_netbios_name;
319
320 if (*winbind_netbios_name) {
321 return winbind_netbios_name;
322 }
323
324 ZERO_STRUCT(response);
325
326 /* Send off request */
327
328 if (winbindd_request_response(WINBINDD_NETBIOS_NAME, NULL, &response) !=
329 NSS_STATUS_SUCCESS) {
330 DEBUG(1, ("could not obtain winbind netbios name!\n"));
331 return lp_netbios_name();
332 }
333
334 fstrcpy(winbind_netbios_name, response.data.netbios_name);
335
336 return winbind_netbios_name;
337
338 }
339
340 DATA_BLOB get_challenge(void)
341 {
342 static DATA_BLOB chal;
343 if (opt_challenge.length)
344 return opt_challenge;
345
346 chal = data_blob(NULL, 8);
347
348 generate_random_buffer(chal.data, chal.length);
349 return chal;
350 }
351
352 /* Copy of parse_domain_user from winbindd_util.c. Parse a string of the
353 form DOMAIN/user into a domain and a user */
354
355 static bool parse_ntlm_auth_domain_user(const char *domuser, fstring domain,
356 fstring user)
357 {
358
359 char *p = strchr(domuser,winbind_separator());
360
361 if (!p) {
362 return False;
363 }
364
365 fstrcpy(user, p+1);
366 fstrcpy(domain, domuser);
367 domain[PTR_DIFF(p, domuser)] = 0;
368 return strupper_m(domain);
369 }
370
371 static bool get_require_membership_sid(void) {
372 struct winbindd_request request;
373 struct winbindd_response response;
374
375 if (!require_membership_of) {
376 return True;
377 }
378
379 if (require_membership_of_sid) {
380 return True;
381 }
382
383 /* Otherwise, ask winbindd for the name->sid request */
384
385 ZERO_STRUCT(request);
386 ZERO_STRUCT(response);
387
388 if (!parse_ntlm_auth_domain_user(require_membership_of,
389 request.data.name.dom_name,
390 request.data.name.name)) {
391 DEBUG(0, ("Could not parse %s into separate domain/name parts!\n",
392 require_membership_of));
393 return False;
394 }
395
396 if (winbindd_request_response(WINBINDD_LOOKUPNAME, &request, &response) !=
397 NSS_STATUS_SUCCESS) {
398 DEBUG(0, ("Winbindd lookupname failed to resolve %s into a SID!\n",
399 require_membership_of));
400 return False;
401 }
402
403 require_membership_of_sid = SMB_STRDUP(response.data.sid.sid);
404
405 if (require_membership_of_sid)
406 return True;
407
408 return False;
409 }
410
411 /*
412 * Get some configuration from pam_winbind.conf to see if we
413 * need to contact trusted domain
414 */
415
416 int get_pam_winbind_config()
417 {
418 int ctrl = 0;
419 dictionary *d = NULL;
420
421 if (!opt_pam_winbind_conf || !*opt_pam_winbind_conf) {
422 opt_pam_winbind_conf = PAM_WINBIND_CONFIG_FILE;
423 }
424
425 d = iniparser_load(discard_const_p(char, opt_pam_winbind_conf));
426
427 if (!d) {
428 return 0;
429 }
430
431 if (iniparser_getboolean(d, discard_const_p(char, "global:krb5_auth"), false)) {
432 ctrl |= WINBIND_KRB5_AUTH;
433 }
434
435 iniparser_freedict(d);
436
437 return ctrl;
438 }
439
440 /* Authenticate a user with a plaintext password */
441
442 static bool check_plaintext_auth(const char *user, const char *pass,
443 bool stdout_diagnostics)
444 {
445 struct winbindd_request request;
446 struct winbindd_response response;
447 NSS_STATUS result;
448
449 if (!get_require_membership_sid()) {
450 return False;
451 }
452
453 /* Send off request */
454
455 ZERO_STRUCT(request);
456 ZERO_STRUCT(response);
457
458 fstrcpy(request.data.auth.user, user);
459 fstrcpy(request.data.auth.pass, pass);
460 if (require_membership_of_sid) {
461 strlcpy(request.data.auth.require_membership_of_sid,
462 require_membership_of_sid,
463 sizeof(request.data.auth.require_membership_of_sid));
464 }
465
466 result = winbindd_request_response(WINBINDD_PAM_AUTH, &request, &response);
467
468 /* Display response */
469
470 if (stdout_diagnostics) {
471 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
472 d_printf("Reading winbind reply failed! (0x01)\n");
473 }
474
475 d_printf("%s: %s (0x%x)\n",
476 response.data.auth.nt_status_string,
477 response.data.auth.error_string,
478 response.data.auth.nt_status);
479 } else {
480 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
481 DEBUG(1, ("Reading winbind reply failed! (0x01)\n"));
482 }
483
484 DEBUG(3, ("%s: %s (0x%x)\n",
485 response.data.auth.nt_status_string,
486 response.data.auth.error_string,
487 response.data.auth.nt_status));
488 }
489
490 return (result == NSS_STATUS_SUCCESS);
491 }
492
493 /* authenticate a user with an encrypted username/password */
494
495 NTSTATUS contact_winbind_auth_crap(const char *username,
496 const char *domain,
497 const char *workstation,
498 const DATA_BLOB *challenge,
499 const DATA_BLOB *lm_response,
500 const DATA_BLOB *nt_response,
501 uint32 flags,
502 uint32 extra_logon_parameters,
503 uint8 lm_key[8],
504 uint8 user_session_key[16],
505 char **error_string,
506 char **unix_name)
507 {
508 NTSTATUS nt_status;
509 NSS_STATUS result;
510 struct winbindd_request request;
511 struct winbindd_response response;
512
513 if (!get_require_membership_sid()) {
514 return NT_STATUS_INVALID_PARAMETER;
515 }
516
517 ZERO_STRUCT(request);
518 ZERO_STRUCT(response);
519
520 request.flags = flags;
521
522 request.data.auth_crap.logon_parameters = extra_logon_parameters
523 | MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT | MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT;
524
525 if (require_membership_of_sid)
526 fstrcpy(request.data.auth_crap.require_membership_of_sid, require_membership_of_sid);
527
528 fstrcpy(request.data.auth_crap.user, username);
529 fstrcpy(request.data.auth_crap.domain, domain);
530
531 fstrcpy(request.data.auth_crap.workstation,
532 workstation);
533
534 memcpy(request.data.auth_crap.chal, challenge->data, MIN(challenge->length, 8));
535
536 if (lm_response && lm_response->length) {
537 memcpy(request.data.auth_crap.lm_resp,
538 lm_response->data,
539 MIN(lm_response->length, sizeof(request.data.auth_crap.lm_resp)));
540 request.data.auth_crap.lm_resp_len = lm_response->length;
541 }
542
543 if (nt_response && nt_response->length) {
544 if (nt_response->length > sizeof(request.data.auth_crap.nt_resp)) {
545 request.flags = request.flags | WBFLAG_BIG_NTLMV2_BLOB;
546 request.extra_len = nt_response->length;
547 request.extra_data.data = SMB_MALLOC_ARRAY(char, request.extra_len);
548 if (request.extra_data.data == NULL) {
549 return NT_STATUS_NO_MEMORY;
550 }
551 memcpy(request.extra_data.data, nt_response->data,
552 nt_response->length);
553
554 } else {
555 memcpy(request.data.auth_crap.nt_resp,
556 nt_response->data, nt_response->length);
557 }
558 request.data.auth_crap.nt_resp_len = nt_response->length;
559 }
560
561 result = winbindd_request_response(WINBINDD_PAM_AUTH_CRAP, &request, &response);
562 SAFE_FREE(request.extra_data.data);
563
564 /* Display response */
565
566 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
567 nt_status = NT_STATUS_UNSUCCESSFUL;
568 if (error_string)
569 *error_string = smb_xstrdup("Reading winbind reply failed!");
570 winbindd_free_response(&response);
571 return nt_status;
572 }
573
574 nt_status = (NT_STATUS(response.data.auth.nt_status));
575 if (!NT_STATUS_IS_OK(nt_status)) {
576 if (error_string)
577 *error_string = smb_xstrdup(response.data.auth.error_string);
578 winbindd_free_response(&response);
579 return nt_status;
580 }
581
582 if ((flags & WBFLAG_PAM_LMKEY) && lm_key) {
583 memcpy(lm_key, response.data.auth.first_8_lm_hash,
584 sizeof(response.data.auth.first_8_lm_hash));
585 }
586 if ((flags & WBFLAG_PAM_USER_SESSION_KEY) && user_session_key) {
587 memcpy(user_session_key, response.data.auth.user_session_key,
588 sizeof(response.data.auth.user_session_key));
589 }
590
591 if (flags & WBFLAG_PAM_UNIX_NAME) {
592 *unix_name = SMB_STRDUP(response.data.auth.unix_username);
593 if (!*unix_name) {
594 winbindd_free_response(&response);
595 return NT_STATUS_NO_MEMORY;
596 }
597 }
598
599 winbindd_free_response(&response);
600 return nt_status;
601 }
602
603 /* contact server to change user password using auth crap */
604 static NTSTATUS contact_winbind_change_pswd_auth_crap(const char *username,
605 const char *domain,
606 const DATA_BLOB new_nt_pswd,
607 const DATA_BLOB old_nt_hash_enc,
608 const DATA_BLOB new_lm_pswd,
609 const DATA_BLOB old_lm_hash_enc,
610 char **error_string)
611 {
612 NTSTATUS nt_status;
613 NSS_STATUS result;
614 struct winbindd_request request;
615 struct winbindd_response response;
616
617 if (!get_require_membership_sid())
618 {
619 if(error_string)
620 *error_string = smb_xstrdup("Can't get membership sid.");
621 return NT_STATUS_INVALID_PARAMETER;
622 }
623
624 ZERO_STRUCT(request);
625 ZERO_STRUCT(response);
626
627 if(username != NULL)
628 fstrcpy(request.data.chng_pswd_auth_crap.user, username);
629 if(domain != NULL)
630 fstrcpy(request.data.chng_pswd_auth_crap.domain,domain);
631
632 if(new_nt_pswd.length)
633 {
634 memcpy(request.data.chng_pswd_auth_crap.new_nt_pswd, new_nt_pswd.data, sizeof(request.data.chng_pswd_auth_crap.new_nt_pswd));
635 request.data.chng_pswd_auth_crap.new_nt_pswd_len = new_nt_pswd.length;
636 }
637
638 if(old_nt_hash_enc.length)
639 {
640 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));
641 request.data.chng_pswd_auth_crap.old_nt_hash_enc_len = old_nt_hash_enc.length;
642 }
643
644 if(new_lm_pswd.length)
645 {
646 memcpy(request.data.chng_pswd_auth_crap.new_lm_pswd, new_lm_pswd.data, sizeof(request.data.chng_pswd_auth_crap.new_lm_pswd));
647 request.data.chng_pswd_auth_crap.new_lm_pswd_len = new_lm_pswd.length;
648 }
649
650 if(old_lm_hash_enc.length)
651 {
652 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));
653 request.data.chng_pswd_auth_crap.old_lm_hash_enc_len = old_lm_hash_enc.length;
654 }
655
656 result = winbindd_request_response(WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, &request, &response);
657
658 /* Display response */
659
660 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0))
661 {
662 nt_status = NT_STATUS_UNSUCCESSFUL;
663 if (error_string)
664 *error_string = smb_xstrdup("Reading winbind reply failed!");
665 winbindd_free_response(&response);
666 return nt_status;
667 }
668
669 nt_status = (NT_STATUS(response.data.auth.nt_status));
670 if (!NT_STATUS_IS_OK(nt_status))
671 {
672 if (error_string)
673 *error_string = smb_xstrdup(response.data.auth.error_string);
674 winbindd_free_response(&response);
675 return nt_status;
676 }
677
678 winbindd_free_response(&response);
679
680 return nt_status;
681 }
682
683 static NTSTATUS ntlm_auth_generate_session_info(struct auth4_context *auth_context,
684 TALLOC_CTX *mem_ctx,
685 void *server_returned_info,
686 const char *original_user_name,
687 uint32_t session_info_flags,
688 struct auth_session_info **session_info_out)
689 {
690 char *unix_username = (char *)server_returned_info;
691 struct auth_session_info *session_info = talloc_zero(mem_ctx, struct auth_session_info);
692 if (!session_info) {
693 return NT_STATUS_NO_MEMORY;
694 }
695
696 session_info->unix_info = talloc_zero(session_info, struct auth_user_info_unix);
697 if (!session_info->unix_info) {
698 TALLOC_FREE(session_info);
699 return NT_STATUS_NO_MEMORY;
700 }
701 session_info->unix_info->unix_name = talloc_steal(session_info->unix_info, unix_username);
702
703 *session_info_out = session_info;
704
705 return NT_STATUS_OK;
706 }
707
708 static NTSTATUS ntlm_auth_generate_session_info_pac(struct auth4_context *auth_ctx,
709 TALLOC_CTX *mem_ctx,
710 struct smb_krb5_context *smb_krb5_context,
711 DATA_BLOB *pac_blob,
712 const char *princ_name,
713 const struct tsocket_address *remote_address,
714 uint32_t session_info_flags,
715 struct auth_session_info **session_info)
716 {
717 TALLOC_CTX *tmp_ctx;
718 struct PAC_LOGON_INFO *logon_info = NULL;
719 char *unixuser;
720 NTSTATUS status;
721 char *domain = NULL;
722 char *realm = NULL;
723 char *user = NULL;
724 char *p;
725
726 tmp_ctx = talloc_new(mem_ctx);
727 if (!tmp_ctx) {
728 return NT_STATUS_NO_MEMORY;
729 }
730
731 if (pac_blob) {
732 #ifdef HAVE_KRB5
733 status = kerberos_pac_logon_info(tmp_ctx, *pac_blob, NULL, NULL,
734 NULL, NULL, 0, &logon_info);
735 #else
736 status = NT_STATUS_ACCESS_DENIED;
737 #endif
738 if (!NT_STATUS_IS_OK(status)) {
739 goto done;
740 }
741 }
742
743 DEBUG(3, ("Kerberos ticket principal name is [%s]\n", princ_name));
744
745 p = strchr_m(princ_name, '@');
746 if (!p) {
747 DEBUG(3, ("[%s] Doesn't look like a valid principal\n",
748 princ_name));
749 return NT_STATUS_LOGON_FAILURE;
750 }
751
752 user = talloc_strndup(mem_ctx, princ_name, p - princ_name);
753 if (!user) {
754 return NT_STATUS_NO_MEMORY;
755 }
756
757 realm = talloc_strdup(talloc_tos(), p + 1);
758 if (!realm) {
759 return NT_STATUS_NO_MEMORY;
760 }
761
762 if (!strequal(realm, lp_realm())) {
763 DEBUG(3, ("Ticket for foreign realm %s@%s\n", user, realm));
764 if (!lp_allow_trusted_domains()) {
765 return NT_STATUS_LOGON_FAILURE;
766 }
767 }
768
769 if (logon_info && logon_info->info3.base.logon_domain.string) {
770 domain = talloc_strdup(mem_ctx,
771 logon_info->info3.base.logon_domain.string);
772 if (!domain) {
773 return NT_STATUS_NO_MEMORY;
774 }
775 DEBUG(10, ("Domain is [%s] (using PAC)\n", domain));
776 } else {
777
778 /* If we have winbind running, we can (and must) shorten the
779 username by using the short netbios name. Otherwise we will
780 have inconsistent user names. With Kerberos, we get the
781 fully qualified realm, with ntlmssp we get the short
782 name. And even w2k3 does use ntlmssp if you for example
783 connect to an ip address. */
784
785 wbcErr wbc_status;
786 struct wbcDomainInfo *info = NULL;
787
788 DEBUG(10, ("Mapping [%s] to short name using winbindd\n",
789 realm));
790
791 wbc_status = wbcDomainInfo(realm, &info);
792
793 if (WBC_ERROR_IS_OK(wbc_status)) {
794 domain = talloc_strdup(mem_ctx,
795 info->short_name);
796 wbcFreeMemory(info);
797 } else {
798 DEBUG(3, ("Could not find short name: %s\n",
799 wbcErrorString(wbc_status)));
800 domain = talloc_strdup(mem_ctx, realm);
801 }
802 if (!domain) {
803 return NT_STATUS_NO_MEMORY;
804 }
805 DEBUG(10, ("Domain is [%s] (using Winbind)\n", domain));
806 }
807
808 unixuser = talloc_asprintf(tmp_ctx, "%s%c%s", domain, winbind_separator(), user);
809 if (!unixuser) {
810 status = NT_STATUS_NO_MEMORY;
811 goto done;
812 }
813
814 status = ntlm_auth_generate_session_info(auth_ctx, mem_ctx, unixuser, NULL, session_info_flags, session_info);
815
816 done:
817 TALLOC_FREE(tmp_ctx);
818 return status;
819 }
820
821
822
823 /**
824 * Return the challenge as determined by the authentication subsystem
825 * @return an 8 byte random challenge
826 */
827
828 static NTSTATUS ntlm_auth_get_challenge(struct auth4_context *auth_ctx,
829 uint8_t chal[8])
830 {
831 if (auth_ctx->challenge.data.length == 8) {
832 DEBUG(5, ("auth_get_challenge: returning previous challenge by module %s (normal)\n",
833 auth_ctx->challenge.set_by));
834 memcpy(chal, auth_ctx->challenge.data.data, 8);
835 return NT_STATUS_OK;
836 }
837
838 if (!auth_ctx->challenge.set_by) {
839 generate_random_buffer(chal, 8);
840
841 auth_ctx->challenge.data = data_blob_talloc(auth_ctx, chal, 8);
842 NT_STATUS_HAVE_NO_MEMORY(auth_ctx->challenge.data.data);
843 auth_ctx->challenge.set_by = "random";
844 }
845
846 DEBUG(10,("auth_get_challenge: challenge set by %s\n",
847 auth_ctx->challenge.set_by));
848
849 return NT_STATUS_OK;
850 }
851
852 /**
853 * NTLM2 authentication modifies the effective challenge,
854 * @param challenge The new challenge value
855 */
856 static NTSTATUS ntlm_auth_set_challenge(struct auth4_context *auth_ctx, const uint8_t chal[8], const char *set_by)
857 {
858 auth_ctx->challenge.set_by = talloc_strdup(auth_ctx, set_by);
859 NT_STATUS_HAVE_NO_MEMORY(auth_ctx->challenge.set_by);
860
861 auth_ctx->challenge.data = data_blob_talloc(auth_ctx, chal, 8);
862 NT_STATUS_HAVE_NO_MEMORY(auth_ctx->challenge.data.data);
863
864 return NT_STATUS_OK;
865 }
866
867 /**
868 * Check the password on an NTLMSSP login.
869 *
870 * Return the session keys used on the connection.
871 */
872
873 static NTSTATUS winbind_pw_check(struct auth4_context *auth4_context,
874 TALLOC_CTX *mem_ctx,
875 const struct auth_usersupplied_info *user_info,
876 void **server_returned_info,
877 DATA_BLOB *session_key, DATA_BLOB *lm_session_key)
878 {
879 static const char zeros[16] = { 0, };
880 NTSTATUS nt_status;
881 char *error_string = NULL;
882 uint8 lm_key[8];
883 uint8 user_sess_key[16];
884 char *unix_name = NULL;
885
886 nt_status = contact_winbind_auth_crap(user_info->client.account_name, user_info->client.domain_name,
887 user_info->workstation_name,
888 &auth4_context->challenge.data,
889 &user_info->password.response.lanman,
890 &user_info->password.response.nt,
891 WBFLAG_PAM_LMKEY | WBFLAG_PAM_USER_SESSION_KEY | WBFLAG_PAM_UNIX_NAME,
892 0,
893 lm_key, user_sess_key,
894 &error_string, &unix_name);
895
896 if (NT_STATUS_IS_OK(nt_status)) {
897 if (memcmp(lm_key, zeros, 8) != 0) {
898 *lm_session_key = data_blob_talloc(mem_ctx, NULL, 16);
899 memcpy(lm_session_key->data, lm_key, 8);
900 memset(lm_session_key->data+8, '\0', 8);
901 }
902
903 if (memcmp(user_sess_key, zeros, 16) != 0) {
904 *session_key = data_blob_talloc(mem_ctx, user_sess_key, 16);
905 }
906 *server_returned_info = talloc_strdup(mem_ctx,
907 unix_name);
908 } else {
909 DEBUG(NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED) ? 0 : 3,
910 ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
911 user_info->client.domain_name, user_info->client.account_name,
912 user_info->workstation_name,
913 error_string ? error_string : "unknown error (NULL)"));
914 }
915
916 SAFE_FREE(error_string);
917 SAFE_FREE(unix_name);
918 return nt_status;
919 }
920
921 static NTSTATUS local_pw_check(struct auth4_context *auth4_context,
922 TALLOC_CTX *mem_ctx,
923 const struct auth_usersupplied_info *user_info,
924 void **server_returned_info,
925 DATA_BLOB *session_key, DATA_BLOB *lm_session_key)
926 {
927 NTSTATUS nt_status;
928 struct samr_Password lm_pw, nt_pw;
929
930 nt_lm_owf_gen (opt_password, nt_pw.hash, lm_pw.hash);
931
932 nt_status = ntlm_password_check(mem_ctx,
933 true, true, 0,
934 &auth4_context->challenge.data,
935 &user_info->password.response.lanman,
936 &user_info->password.response.nt,
937 user_info->client.account_name,
938 user_info->client.account_name,
939 user_info->client.domain_name,
940 &lm_pw, &nt_pw, session_key, lm_session_key);
941
942 if (NT_STATUS_IS_OK(nt_status)) {
943 *server_returned_info = talloc_asprintf(mem_ctx,
944 "%s%c%s", user_info->client.domain_name,
945 *lp_winbind_separator(),
946 user_info->client.account_name);
947 } else {
948 DEBUG(3, ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
949 user_info->client.domain_name, user_info->client.account_name,
950 user_info->workstation_name,
951 nt_errstr(nt_status)));
952 }
953 return nt_status;
954 }
955
956 static NTSTATUS ntlm_auth_start_ntlmssp_client(struct ntlmssp_state **client_ntlmssp_state)
957 {
958 NTSTATUS status;
959 if ( (opt_username == NULL) || (opt_domain == NULL) ) {
960 status = NT_STATUS_UNSUCCESSFUL;
961 DEBUG(1, ("Need username and domain for NTLMSSP\n"));
962 return NT_STATUS_INVALID_PARAMETER;
963 }
964
965 status = ntlmssp_client_start(NULL,
966 lp_netbios_name(),
967 lp_workgroup(),
968 lp_client_ntlmv2_auth(),
969 client_ntlmssp_state);
970
971 if (!NT_STATUS_IS_OK(status)) {
972 DEBUG(1, ("Could not start NTLMSSP client: %s\n",
973 nt_errstr(status)));
974 TALLOC_FREE(*client_ntlmssp_state);
975 return status;
976 }
977
978 status = ntlmssp_set_username(*client_ntlmssp_state, opt_username);
979
980 if (!NT_STATUS_IS_OK(status)) {
981 DEBUG(1, ("Could not set username: %s\n",
982 nt_errstr(status)));
983 TALLOC_FREE(*client_ntlmssp_state);
984 return status;
985 }
986
987 status = ntlmssp_set_domain(*client_ntlmssp_state, opt_domain);
988
989 if (!NT_STATUS_IS_OK(status)) {
990 DEBUG(1, ("Could not set domain: %s\n",
991 nt_errstr(status)));
992 TALLOC_FREE(*client_ntlmssp_state);
993 return status;
994 }
995
996 if (opt_password) {
997 status = ntlmssp_set_password(*client_ntlmssp_state, opt_password);
998
999 if (!NT_STATUS_IS_OK(status)) {
1000 DEBUG(1, ("Could not set password: %s\n",
1001 nt_errstr(status)));
1002 TALLOC_FREE(*client_ntlmssp_state);
1003 return status;
1004 }
1005 }
1006
1007 return NT_STATUS_OK;
1008 }
1009
1010 static struct auth4_context *make_auth4_context_ntlm_auth(TALLOC_CTX *mem_ctx, bool local_pw)
1011 {
1012 struct auth4_context *auth4_context = talloc_zero(mem_ctx, struct auth4_context);
1013 if (auth4_context == NULL) {
1014 DEBUG(10, ("failed to allocate auth4_context failed\n"));
1015 return NULL;
1016 }
1017 auth4_context->generate_session_info = ntlm_auth_generate_session_info;
1018 auth4_context->generate_session_info_pac = ntlm_auth_generate_session_info_pac;
1019 auth4_context->get_ntlm_challenge = ntlm_auth_get_challenge;
1020 auth4_context->set_ntlm_challenge = ntlm_auth_set_challenge;
1021 if (local_pw) {
1022 auth4_context->check_ntlm_password = local_pw_check;
1023 } else {
1024 auth4_context->check_ntlm_password = winbind_pw_check;
1025 }
1026 auth4_context->private_data = NULL;
1027 return auth4_context;
1028 }
1029
1030 static NTSTATUS ntlm_auth_start_ntlmssp_server(TALLOC_CTX *mem_ctx,
1031 struct loadparm_context *lp_ctx,
1032 struct gensec_security **gensec_security_out)
1033 {
1034 struct gensec_security *gensec_security;
1035 NTSTATUS nt_status;
1036
1037 TALLOC_CTX *tmp_ctx;
1038 const struct gensec_security_ops **backends;
1039 struct gensec_settings *gensec_settings;
1040 size_t idx = 0;
1041 struct cli_credentials *server_credentials;
1042
1043 struct auth4_context *auth4_context;
1044
1045 tmp_ctx = talloc_new(mem_ctx);
1046 NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
1047
1048 auth4_context = make_auth4_context_ntlm_auth(tmp_ctx, opt_password);
1049 if (auth4_context == NULL) {
1050 TALLOC_FREE(tmp_ctx);
1051 return NT_STATUS_NO_MEMORY;
1052 }
1053
1054 gensec_settings = lpcfg_gensec_settings(tmp_ctx, lp_ctx);
1055 if (lp_ctx == NULL) {
1056 DEBUG(10, ("lpcfg_gensec_settings failed\n"));
1057 TALLOC_FREE(tmp_ctx);
1058 return NT_STATUS_NO_MEMORY;
1059 }
1060
1061 /*
1062 * This should be a 'netbios domain -> DNS domain'
1063 * mapping, and can currently validly return NULL on
1064 * poorly configured systems.
1065 *
1066 * This is used for the NTLMSSP server
1067 *
1068 */
1069 if (opt_password) {
1070 gensec_settings->server_netbios_name = lp_netbios_name();
1071 gensec_settings->server_netbios_domain = lp_workgroup();
1072 } else {
1073 gensec_settings->server_netbios_name = get_winbind_netbios_name();
1074 gensec_settings->server_netbios_domain = get_winbind_domain();
1075 }
1076
1077 gensec_settings->server_dns_domain = strlower_talloc(gensec_settings,
1078 get_mydnsdomname(talloc_tos()));
1079 gensec_settings->server_dns_name = strlower_talloc(gensec_settings,
1080 get_mydnsfullname());
1081
1082 backends = talloc_zero_array(gensec_settings,
1083 const struct gensec_security_ops *, 4);
1084
1085 if (backends == NULL) {
1086 TALLOC_FREE(tmp_ctx);
1087 return NT_STATUS_NO_MEMORY;
1088 }
1089 gensec_settings->backends = backends;
1090
1091 gensec_init();
1092
1093 /* These need to be in priority order, krb5 before NTLMSSP */
1094 #if defined(HAVE_KRB5)
1095 backends[idx++] = &gensec_gse_krb5_security_ops;
1096 #endif
1097
1098 backends[idx++] = gensec_security_by_oid(NULL, GENSEC_OID_NTLMSSP);
1099
1100 backends[idx++] = gensec_security_by_oid(NULL, GENSEC_OID_SPNEGO);
1101
1102 /*
1103 * This is anonymous for now, because we just use it
1104 * to set the kerberos state at the moment
1105 */
1106 server_credentials = cli_credentials_init_anon(tmp_ctx);
1107 if (!server_credentials) {
1108 DEBUG(0, ("auth_generic_prepare: Failed to init server credentials\n"));
1109 return NT_STATUS_NO_MEMORY;
1110 }
1111
1112 cli_credentials_set_conf(server_credentials, lp_ctx);
1113
1114 if (lp_security() == SEC_ADS || USE_KERBEROS_KEYTAB) {
1115 cli_credentials_set_kerberos_state(server_credentials, CRED_AUTO_USE_KERBEROS);
1116 } else {
1117 cli_credentials_set_kerberos_state(server_credentials, CRED_DONT_USE_KERBEROS);
1118 }
1119
1120 nt_status = gensec_server_start(tmp_ctx, gensec_settings,
1121 auth4_context, &gensec_security);
1122
1123 if (!NT_STATUS_IS_OK(nt_status)) {
1124 TALLOC_FREE(tmp_ctx);
1125 return nt_status;
1126 }
1127
1128 gensec_set_credentials(gensec_security, server_credentials);
1129
1130 gensec_want_feature(gensec_security, GENSEC_FEATURE_SIGN);
1131 gensec_want_feature(gensec_security, GENSEC_FEATURE_SEAL);
1132
1133 talloc_unlink(tmp_ctx, lp_ctx);
1134 talloc_unlink(tmp_ctx, server_credentials);
1135 talloc_unlink(tmp_ctx, gensec_settings);
1136 talloc_unlink(tmp_ctx, auth4_context);
1137
1138 nt_status = gensec_start_mech_by_oid(gensec_security, GENSEC_OID_NTLMSSP);
1139 if (!NT_STATUS_IS_OK(nt_status)) {
1140 TALLOC_FREE(tmp_ctx);
1141 return nt_status;
1142 }
1143
1144 *gensec_security_out = talloc_steal(mem_ctx, gensec_security);
1145 TALLOC_FREE(tmp_ctx);
1146 return NT_STATUS_OK;
1147 }
1148
1149 /*******************************************************************
1150 Used by firefox to drive NTLM auth to IIS servers.
1151 *******************************************************************/
1152
1153 static NTSTATUS do_ccache_ntlm_auth(DATA_BLOB initial_msg, DATA_BLOB challenge_msg,
1154 DATA_BLOB *reply)
1155 {
1156 struct winbindd_request wb_request;
1157 struct winbindd_response wb_response;
1158 int ctrl = 0;
1159 NSS_STATUS result;
1160
1161 /* get winbindd to do the ntlmssp step on our behalf */
1162 ZERO_STRUCT(wb_request);
1163 ZERO_STRUCT(wb_response);
1164
1165 /*
1166 * This is tricky here. If we set krb5_auth in pam_winbind.conf
1167 * creds for users in trusted domain will be stored the winbindd
1168 * child of the trusted domain. If we ask the primary domain for
1169 * ntlm_ccache_auth, it will fail. So, we have to ask the trusted
1170 * domain's child for ccache_ntlm_auth. that is to say, we have to
1171 * set WBFLAG_PAM_CONTACT_TRUSTDOM in request.flags.
1172 */
1173 ctrl = get_pam_winbind_config();
1174
1175 if (ctrl & WINBIND_KRB5_AUTH) {
1176 wb_request.flags |= WBFLAG_PAM_CONTACT_TRUSTDOM;
1177 }
1178
1179 fstr_sprintf(wb_request.data.ccache_ntlm_auth.user,
1180 "%s%c%s", opt_domain, winbind_separator(), opt_username);
1181 wb_request.data.ccache_ntlm_auth.uid = geteuid();
1182 wb_request.data.ccache_ntlm_auth.initial_blob_len = initial_msg.length;
1183 wb_request.data.ccache_ntlm_auth.challenge_blob_len = challenge_msg.length;
1184 wb_request.extra_len = initial_msg.length + challenge_msg.length;
1185
1186 if (wb_request.extra_len > 0) {
1187 wb_request.extra_data.data = SMB_MALLOC_ARRAY(char, wb_request.extra_len);
1188 if (wb_request.extra_data.data == NULL) {
1189 return NT_STATUS_NO_MEMORY;
1190 }
1191
1192 memcpy(wb_request.extra_data.data, initial_msg.data, initial_msg.length);
1193 memcpy(wb_request.extra_data.data + initial_msg.length,
1194 challenge_msg.data, challenge_msg.length);
1195 }
1196
1197 result = winbindd_request_response(WINBINDD_CCACHE_NTLMAUTH, &wb_request, &wb_response);
1198 SAFE_FREE(wb_request.extra_data.data);
1199
1200 if (result != NSS_STATUS_SUCCESS) {
1201 winbindd_free_response(&wb_response);
1202 return NT_STATUS_UNSUCCESSFUL;
1203 }
1204
1205 if (reply) {
1206 *reply = data_blob(wb_response.extra_data.data,
1207 wb_response.data.ccache_ntlm_auth.auth_blob_len);
1208 if (wb_response.data.ccache_ntlm_auth.auth_blob_len > 0 &&
1209 reply->data == NULL) {
1210 winbindd_free_response(&wb_response);
1211 return NT_STATUS_NO_MEMORY;
1212 }
1213 }
1214
1215 winbindd_free_response(&wb_response);
1216 return NT_STATUS_MORE_PROCESSING_REQUIRED;
1217 }
1218
1219 static void manage_client_ntlmssp_request(enum stdio_helper_mode stdio_helper_mode,
1220 struct loadparm_context *lp_ctx,
1221 struct ntlm_auth_state *state,
1222 char *buf, int length, void **private2)
1223 {
1224 DATA_BLOB request, reply;
1225 NTSTATUS nt_status;
1226
1227 if (!opt_username || !*opt_username) {
1228 x_fprintf(x_stderr, "username must be specified!\n\n");
1229 exit(1);
1230 }
1231
1232 if (strlen(buf) < 2) {
1233 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
1234 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
1235 return;
1236 }
1237
1238 if (strlen(buf) > 3) {
1239 if(strncmp(buf, "SF ", 3) == 0) {
1240 DEBUG(10, ("Looking for flags to negotiate\n"));
1241 talloc_free(state->want_feature_list);
1242 state->want_feature_list = talloc_strdup(state->mem_ctx,
1243 buf+3);
1244 x_fprintf(x_stdout, "OK\n");
1245 return;
1246 }
1247 request = base64_decode_data_blob(buf + 3);
1248 } else {
1249 request = data_blob_null;
1250 }
1251
1252 if (strncmp(buf, "PW ", 3) == 0) {
1253 /* We asked for a password and obviously got it :-) */
1254
1255 opt_password = SMB_STRNDUP((const char *)request.data,
1256 request.length);
1257
1258 if (opt_password == NULL) {
1259 DEBUG(1, ("Out of memory\n"));
1260 x_fprintf(x_stdout, "BH Out of memory\n");
1261 data_blob_free(&request);
1262 return;
1263 }
1264
1265 x_fprintf(x_stdout, "OK\n");
1266 data_blob_free(&request);
1267 return;
1268 }
1269
1270 if (!state->ntlmssp_state && use_cached_creds) {
1271 /* check whether cached credentials are usable. */
1272 DATA_BLOB empty_blob = data_blob_null;
1273
1274 nt_status = do_ccache_ntlm_auth(empty_blob, empty_blob, NULL);
1275 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1276 /* failed to use cached creds */
1277 use_cached_creds = False;
1278 }
1279 }
1280
1281 if (opt_password == NULL && !use_cached_creds) {
1282 /* Request a password from the calling process. After
1283 sending it, the calling process should retry asking for the
1284 negotiate. */
1285
1286 DEBUG(10, ("Requesting password\n"));
1287 x_fprintf(x_stdout, "PW\n");
1288 return;
1289 }
1290
1291 if (strncmp(buf, "YR", 2) == 0) {
1292 TALLOC_FREE(state->ntlmssp_state);
1293 state->cli_state = CLIENT_INITIAL;
1294 } else if (strncmp(buf, "TT", 2) == 0) {
1295 /* No special preprocessing required */
1296 } else if (strncmp(buf, "GF", 2) == 0) {
1297 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
1298
1299 if(state->cli_state == CLIENT_FINISHED) {
1300 x_fprintf(x_stdout, "GF 0x%08x\n", state->neg_flags);
1301 }
1302 else {
1303 x_fprintf(x_stdout, "BH\n");
1304 }
1305
1306 data_blob_free(&request);
1307 return;
1308 } else if (strncmp(buf, "GK", 2) == 0 ) {
1309 DEBUG(10, ("Requested session key\n"));
1310
1311 if(state->cli_state == CLIENT_FINISHED) {
1312 char *key64 = base64_encode_data_blob(state->mem_ctx,
1313 state->session_key);
1314 x_fprintf(x_stdout, "GK %s\n", key64?key64:"<NULL>");
1315 TALLOC_FREE(key64);
1316 }
1317 else {
1318 x_fprintf(x_stdout, "BH\n");
1319 }
1320
1321 data_blob_free(&request);
1322 return;
1323 } else {
1324 DEBUG(1, ("NTLMSSP query [%s] invalid\n", buf));
1325 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
1326 return;
1327 }
1328
1329 if (!state->ntlmssp_state) {
1330 nt_status = ntlm_auth_start_ntlmssp_client(
1331 &state->ntlmssp_state);
1332 if (!NT_STATUS_IS_OK(nt_status)) {
1333 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
1334 return;
1335 }
1336 ntlmssp_want_feature_list(state->ntlmssp_state,
1337 state->want_feature_list);
1338 state->initial_message = data_blob_null;
1339 }
1340
1341 DEBUG(10, ("got NTLMSSP packet:\n"));
1342 dump_data(10, request.data, request.length);
1343
1344 if (use_cached_creds && !opt_password &&
1345 (state->cli_state == CLIENT_RESPONSE)) {
1346 nt_status = do_ccache_ntlm_auth(state->initial_message, request,
1347 &reply);
1348 } else {
1349 nt_status = ntlmssp_update(state->ntlmssp_state, request,
1350 &reply);
1351 }
1352
1353 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1354 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
1355 reply);
1356 if (state->cli_state == CLIENT_INITIAL) {
1357 x_fprintf(x_stdout, "YR %s\n", reply_base64);
1358 state->initial_message = reply;
1359 state->cli_state = CLIENT_RESPONSE;
1360 } else {
1361 x_fprintf(x_stdout, "KK %s\n", reply_base64);
1362 data_blob_free(&reply);
1363 }
1364 TALLOC_FREE(reply_base64);
1365 DEBUG(10, ("NTLMSSP challenge\n"));
1366 } else if (NT_STATUS_IS_OK(nt_status)) {
1367 char *reply_base64 = base64_encode_data_blob(talloc_tos(),
1368 reply);
1369 x_fprintf(x_stdout, "AF %s\n", reply_base64);
1370 TALLOC_FREE(reply_base64);
1371
1372 if(state->have_session_key)
1373 data_blob_free(&state->session_key);
1374
1375 state->session_key = data_blob(
1376 state->ntlmssp_state->session_key.data,
1377 state->ntlmssp_state->session_key.length);
1378 state->neg_flags = state->ntlmssp_state->neg_flags;
1379 state->have_session_key = true;
1380
1381 DEBUG(10, ("NTLMSSP OK!\n"));
1382 state->cli_state = CLIENT_FINISHED;
1383 TALLOC_FREE(state->ntlmssp_state);
1384 } else {
1385 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
1386 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
1387 state->cli_state = CLIENT_ERROR;
1388 TALLOC_FREE(state->ntlmssp_state);
1389 }
1390
1391 data_blob_free(&request);
1392 }
1393
1394 static void manage_squid_basic_request(enum stdio_helper_mode stdio_helper_mode,
1395 struct loadparm_context *lp_ctx,
1396 struct ntlm_auth_state *state,
1397 char *buf, int length, void **private2)
1398 {
1399 char *user, *pass;
1400 user=buf;
1401
1402 pass=(char *)memchr(buf,' ',length);
1403 if (!pass) {
1404 DEBUG(2, ("Password not found. Denying access\n"));
1405 x_fprintf(x_stdout, "ERR\n");
1406 return;
1407 }
1408 *pass='\0';
1409 pass++;
1410
1411 if (state->helper_mode == SQUID_2_5_BASIC) {
1412 rfc1738_unescape(user);
1413 rfc1738_unescape(pass);
1414 }
1415
1416 if (check_plaintext_auth(user, pass, False)) {
1417 x_fprintf(x_stdout, "OK\n");
1418 } else {
1419 x_fprintf(x_stdout, "ERR\n");
1420 }
1421 }
1422
1423 static void manage_gensec_request(enum stdio_helper_mode stdio_helper_mode,
1424 struct loadparm_context *lp_ctx,
1425 char *buf, int length, void **private1)
1426 {
1427 DATA_BLOB in;
1428 DATA_BLOB out = data_blob(NULL, 0);
1429 char *out_base64 = NULL;
1430 const char *reply_arg = NULL;
1431 struct gensec_ntlm_state {
1432 struct gensec_security *gensec_state;
1433 const char *set_password;
1434 };
1435 struct gensec_ntlm_state *state;
1436
1437 NTSTATUS nt_status;
1438 bool first = false;
1439 const char *reply_code;
1440 struct cli_credentials *creds;
1441
1442 static char *want_feature_list = NULL;
1443 static DATA_BLOB session_key;
1444
1445 TALLOC_CTX *mem_ctx;
1446
1447 if (*private1) {
1448 state = (struct gensec_ntlm_state *)*private1;
1449 } else {
1450 state = talloc_zero(NULL, struct gensec_ntlm_state);
1451 if (!state) {
1452 x_fprintf(x_stdout, "BH No Memory\n");
1453 exit(1);
1454 }
1455 *private1 = state;
1456 if (opt_password) {
1457 state->set_password = opt_password;
1458 }
1459 }
1460
1461 if (strlen(buf) < 2) {
1462 DEBUG(1, ("query [%s] invalid", buf));
1463 x_fprintf(x_stdout, "BH Query invalid\n");
1464 return;
1465 }
1466
1467 if (strlen(buf) > 3) {
1468 if(strncmp(buf, "SF ", 3) == 0) {
1469 DEBUG(10, ("Setting flags to negotiate\n"));
1470 talloc_free(want_feature_list);
1471 want_feature_list = talloc_strndup(state, buf+3, strlen(buf)-3);
1472 x_fprintf(x_stdout, "OK\n");
1473 return;
1474 }
1475 in = base64_decode_data_blob(buf + 3);
1476 } else {
1477 in = data_blob(NULL, 0);
1478 }
1479
1480 if (strncmp(buf, "YR", 2) == 0) {
1481 if (state->gensec_state) {
1482 talloc_free(state->gensec_state);
1483 state->gensec_state = NULL;
1484 }
1485 } else if ( (strncmp(buf, "OK", 2) == 0)) {
1486 /* Just return BH, like ntlm_auth from Samba 3 does. */
1487 x_fprintf(x_stdout, "BH Command expected\n");
1488 data_blob_free(&in);
1489 return;
1490 } else if ( (strncmp(buf, "TT ", 3) != 0) &&
1491 (strncmp(buf, "KK ", 3) != 0) &&
1492 (strncmp(buf, "AF ", 3) != 0) &&
1493 (strncmp(buf, "NA ", 3) != 0) &&
1494 (strncmp(buf, "UG", 2) != 0) &&
1495 (strncmp(buf, "PW ", 3) != 0) &&
1496 (strncmp(buf, "GK", 2) != 0) &&
1497 (strncmp(buf, "GF", 2) != 0)) {
1498 DEBUG(1, ("SPNEGO request [%s] invalid prefix\n", buf));
1499 x_fprintf(x_stdout, "BH SPNEGO request invalid prefix\n");
1500 data_blob_free(&in);
1501 return;
1502 }
1503
1504 mem_ctx = talloc_named(NULL, 0, "manage_gensec_request internal mem_ctx");
1505
1506 /* setup gensec */
1507 if (!(state->gensec_state)) {
1508 switch (stdio_helper_mode) {
1509 case GSS_SPNEGO_CLIENT:
1510 case NTLMSSP_CLIENT_1:
1511 /* setup the client side */
1512
1513 nt_status = gensec_client_start(NULL, &state->gensec_state,
1514 lpcfg_gensec_settings(NULL, lp_ctx));
1515 if (!NT_STATUS_IS_OK(nt_status)) {
1516 x_fprintf(x_stdout, "BH GENSEC mech failed to start: %s\n", nt_errstr(nt_status));
1517 talloc_free(mem_ctx);
1518 return;
1519 }
1520
1521 creds = cli_credentials_init(state->gensec_state);
1522 cli_credentials_set_conf(creds, lp_ctx);
1523 if (opt_username) {
1524 cli_credentials_set_username(creds, opt_username, CRED_SPECIFIED);
1525 }
1526 if (opt_domain) {
1527 cli_credentials_set_domain(creds, opt_domain, CRED_SPECIFIED);
1528 }
1529 if (state->set_password) {
1530 cli_credentials_set_password(creds, state->set_password, CRED_SPECIFIED);
1531 } else {
1532 cli_credentials_set_password_callback(creds, get_password);
1533 }
1534 if (opt_workstation) {
1535 cli_credentials_set_workstation(creds, opt_workstation, CRED_SPECIFIED);
1536 }
1537
1538 gensec_set_credentials(state->gensec_state, creds);
1539
1540 break;
1541 case GSS_SPNEGO_SERVER:
1542 case SQUID_2_5_NTLMSSP:
1543 {
1544 nt_status = ntlm_auth_start_ntlmssp_server(state, lp_ctx,
1545 &state->gensec_state);
1546 if (!NT_STATUS_IS_OK(nt_status)) {
1547 x_fprintf(x_stdout, "BH GENSEC mech failed to start: %s\n", nt_errstr(nt_status));
1548 talloc_free(mem_ctx);
1549 return;
1550 }
1551 break;
1552 }
1553 default:
1554 talloc_free(mem_ctx);
1555 abort();
1556 }
1557
1558 gensec_want_feature_list(state->gensec_state, want_feature_list);
1559
1560 switch (stdio_helper_mode) {
1561 case GSS_SPNEGO_CLIENT:
1562 case GSS_SPNEGO_SERVER:
1563 nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_SPNEGO);
1564 if (!in.length) {
1565 first = true;
1566 }
1567 break;
1568 case NTLMSSP_CLIENT_1:
1569 if (!in.length) {
1570 first = true;
1571 }
1572 /* fall through */
1573 case SQUID_2_5_NTLMSSP:
1574 nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_NTLMSSP);
1575 break;
1576 default:
1577 talloc_free(mem_ctx);
1578 abort();
1579 }
1580
1581 if (!NT_STATUS_IS_OK(nt_status)) {
1582 DEBUG(1, ("GENSEC mech failed to start: %s\n", nt_errstr(nt_status)));
1583 x_fprintf(x_stdout, "BH GENSEC mech failed to start\n");
1584 talloc_free(mem_ctx);
1585 return;
1586 }
1587
1588 }
1589
1590 /* update */
1591
1592 if (strncmp(buf, "PW ", 3) == 0) {
1593 state->set_password = talloc_strndup(state,
1594 (const char *)in.data,
1595 in.length);
1596
1597 cli_credentials_set_password(gensec_get_credentials(state->gensec_state),
1598 state->set_password,
1599 CRED_SPECIFIED);
1600 x_fprintf(x_stdout, "OK\n");
1601 data_blob_free(&in);
1602 talloc_free(mem_ctx);
1603 return;
1604 }
1605
1606 if (strncmp(buf, "GK", 2) == 0) {
1607 char *base64_key;
1608 DEBUG(10, ("Requested session key\n"));
1609 nt_status = gensec_session_key(state->gensec_state, mem_ctx, &session_key);
1610 if(!NT_STATUS_IS_OK(nt_status)) {
1611 DEBUG(1, ("gensec_session_key failed: %s\n", nt_errstr(nt_status)));
1612 x_fprintf(x_stdout, "BH No session key\n");
1613 talloc_free(mem_ctx);
1614 return;
1615 } else {
1616 base64_key = base64_encode_data_blob(state, session_key);
1617 x_fprintf(x_stdout, "GK %s\n", base64_key);
1618 talloc_free(base64_key);
1619 }
1620 talloc_free(mem_ctx);
1621 return;
1622 }
1623
1624 if (stdio_helper_mode == SQUID_2_5_NTLMSSP && strncmp(buf, "GF", 2) == 0) {
1625 uint32_t neg_flags;
1626
1627 neg_flags = gensec_ntlmssp_neg_flags(state->gensec_state);
1628
1629 DEBUG(10, ("Requested negotiated feature flags\n"));
1630 x_fprintf(x_stdout, "GF 0x%08x\n", neg_flags);
1631 return;
1632 }
1633
1634 nt_status = gensec_update(state->gensec_state, mem_ctx, in, &out);
1635
1636 /* don't leak 'bad password'/'no such user' info to the network client */
1637 nt_status = nt_status_squash(nt_status);
1638
1639 if (out.length) {
1640 out_base64 = base64_encode_data_blob(mem_ctx, out);
1641 } else {
1642 out_base64 = NULL;
1643 }
1644
1645 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1646 reply_arg = "*";
1647 if (first && state->gensec_state->gensec_role == GENSEC_CLIENT) {
1648 reply_code = "YR";
1649 } else if (state->gensec_state->gensec_role == GENSEC_CLIENT) {
1650 reply_code = "KK";
1651 } else if (state->gensec_state->gensec_role == GENSEC_SERVER) {
1652 reply_code = "TT";
1653 } else {
1654 abort();
1655 }
1656
1657
1658 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
1659 reply_code = "BH NT_STATUS_ACCESS_DENIED";
1660 reply_arg = nt_errstr(nt_status);
1661 DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
1662 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_UNSUCCESSFUL)) {
1663 reply_code = "BH NT_STATUS_UNSUCCESSFUL";
1664 reply_arg = nt_errstr(nt_status);
1665 DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
1666 } else if (!NT_STATUS_IS_OK(nt_status)) {
1667 reply_code = "NA";
1668 reply_arg = nt_errstr(nt_status);
1669 DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
1670 } else if /* OK */ (state->gensec_state->gensec_role == GENSEC_SERVER) {
1671 struct auth_session_info *session_info;
1672
1673 nt_status = gensec_session_info(state->gensec_state, mem_ctx, &session_info);
1674 if (!NT_STATUS_IS_OK(nt_status)) {
1675 reply_code = "BH Failed to retrive session info";
1676 reply_arg = nt_errstr(nt_status);
1677 DEBUG(1, ("GENSEC failed to retrieve the session info: %s\n", nt_errstr(nt_status)));
1678 } else {
1679
1680 reply_code = "AF";
1681 reply_arg = talloc_strdup(state->gensec_state, session_info->unix_info->unix_name);
1682 if (reply_arg == NULL) {
1683 reply_code = "BH out of memory";
1684 reply_arg = nt_errstr(NT_STATUS_NO_MEMORY);
1685 }
1686 talloc_free(session_info);
1687 }
1688 } else if (state->gensec_state->gensec_role == GENSEC_CLIENT) {
1689 reply_code = "AF";
1690 reply_arg = out_base64;
1691 } else {
1692 abort();
1693 }
1694
1695 switch (stdio_helper_mode) {
1696 case GSS_SPNEGO_SERVER:
1697 x_fprintf(x_stdout, "%s %s %s\n", reply_code,
1698 out_base64 ? out_base64 : "*",
1699 reply_arg ? reply_arg : "*");
1700 break;
1701 default:
1702 if (out_base64) {
1703 x_fprintf(x_stdout, "%s %s\n", reply_code, out_base64);
1704 } else if (reply_arg) {
1705 x_fprintf(x_stdout, "%s %s\n", reply_code, reply_arg);
1706 } else {
1707 x_fprintf(x_stdout, "%s\n", reply_code);
1708 }
1709 }
1710
1711 talloc_free(mem_ctx);
1712 return;
1713 }
1714
1715 static void manage_gss_spnego_request(enum stdio_helper_mode stdio_helper_mode,
1716 struct loadparm_context *lp_ctx,
1717 struct ntlm_auth_state *state,
1718 char *buf, int length, void **private2)
1719 {
1720 manage_gensec_request(stdio_helper_mode, lp_ctx, buf, length, &state->gensec_private_1);
1721 return;
1722 }
1723
1724 static void manage_squid_ntlmssp_request(enum stdio_helper_mode stdio_helper_mode,
1725 struct loadparm_context *lp_ctx,
1726 struct ntlm_auth_state *state,
1727 char *buf, int length, void **private2)
1728 {
1729 manage_gensec_request(stdio_helper_mode, lp_ctx, buf, length, &state->gensec_private_1);
1730 return;
1731 }
1732
1733 static struct ntlmssp_state *client_ntlmssp_state = NULL;
1734
1735 static bool manage_client_ntlmssp_init(struct spnego_data spnego)
1736 {
1737 NTSTATUS status;
1738 DATA_BLOB null_blob = data_blob_null;
1739 DATA_BLOB to_server;
1740 char *to_server_base64;
1741 const char *my_mechs[] = {OID_NTLMSSP, NULL};
1742 TALLOC_CTX *ctx = talloc_tos();
1743
1744 DEBUG(10, ("Got spnego negTokenInit with NTLMSSP\n"));
1745
1746 if (client_ntlmssp_state != NULL) {
1747 DEBUG(1, ("Request for initial SPNEGO request where "
1748 "we already have a state\n"));
1749 return False;
1750 }
1751
1752 if (!client_ntlmssp_state) {
1753 if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_client(&client_ntlmssp_state))) {
1754 x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1755 return False;
1756 }
1757 }
1758
1759
1760 if (opt_password == NULL) {
1761
1762 /* Request a password from the calling process. After
1763 sending it, the calling process should retry with
1764 the negTokenInit. */
1765
1766 DEBUG(10, ("Requesting password\n"));
1767 x_fprintf(x_stdout, "PW\n");
1768 return True;
1769 }
1770
1771 spnego.type = SPNEGO_NEG_TOKEN_INIT;
1772 spnego.negTokenInit.mechTypes = my_mechs;
1773 spnego.negTokenInit.reqFlags = data_blob_null;
1774 spnego.negTokenInit.reqFlagsPadding = 0;
1775 spnego.negTokenInit.mechListMIC = null_blob;
1776
1777 status = ntlmssp_update(client_ntlmssp_state, null_blob,
1778 &spnego.negTokenInit.mechToken);
1779
1780 if ( !(NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) ||
1781 NT_STATUS_IS_OK(status)) ) {
1782 DEBUG(1, ("Expected OK or MORE_PROCESSING_REQUIRED, got: %s\n",
1783 nt_errstr(status)));
1784 TALLOC_FREE(client_ntlmssp_state);
1785 return False;
1786 }
1787
1788 spnego_write_data(ctx, &to_server, &spnego);
1789 data_blob_free(&spnego.negTokenInit.mechToken);
1790
1791 to_server_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1792 data_blob_free(&to_server);
1793 x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1794 TALLOC_FREE(to_server_base64);
1795 return True;
1796 }
1797
1798 static void manage_client_ntlmssp_targ(struct spnego_data spnego)
1799 {
1800 NTSTATUS status;
1801 DATA_BLOB null_blob = data_blob_null;
1802 DATA_BLOB request;
1803 DATA_BLOB to_server;
1804 char *to_server_base64;
1805 TALLOC_CTX *ctx = talloc_tos();
1806
1807 DEBUG(10, ("Got spnego negTokenTarg with NTLMSSP\n"));
1808
1809 if (client_ntlmssp_state == NULL) {
1810 DEBUG(1, ("Got NTLMSSP tArg without a client state\n"));
1811 x_fprintf(x_stdout, "BH Got NTLMSSP tArg without a client state\n");
1812 return;
1813 }
1814
1815 if (spnego.negTokenTarg.negResult == SPNEGO_REJECT) {
1816 x_fprintf(x_stdout, "NA\n");
1817 TALLOC_FREE(client_ntlmssp_state);
1818 return;
1819 }
1820
1821 if (spnego.negTokenTarg.negResult == SPNEGO_ACCEPT_COMPLETED) {
1822 x_fprintf(x_stdout, "AF\n");
1823 TALLOC_FREE(client_ntlmssp_state);
1824 return;
1825 }
1826
1827 status = ntlmssp_update(client_ntlmssp_state,
1828 spnego.negTokenTarg.responseToken,
1829 &request);
1830
1831 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) && !NT_STATUS_IS_OK(status)) {
1832 DEBUG(1, ("Expected MORE_PROCESSING_REQUIRED or OK from "
1833 "ntlmssp_client_update, got: %s\n",
1834 nt_errstr(status)));
1835 x_fprintf(x_stdout, "BH Expected MORE_PROCESSING_REQUIRED from "
1836 "ntlmssp_client_update\n");
1837 data_blob_free(&request);
1838 TALLOC_FREE(client_ntlmssp_state);
1839 return;
1840 }
1841
1842 spnego.type = SPNEGO_NEG_TOKEN_TARG;
1843 spnego.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
1844 spnego.negTokenTarg.supportedMech = (const char *)OID_NTLMSSP;
1845 spnego.negTokenTarg.responseToken = request;
1846 spnego.negTokenTarg.mechListMIC = null_blob;
1847
1848 spnego_write_data(ctx, &to_server, &spnego);
1849 data_blob_free(&request);
1850
1851 to_server_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1852 data_blob_free(&to_server);
1853 x_fprintf(x_stdout, "KK %s\n", to_server_base64);
1854 TALLOC_FREE(to_server_base64);
1855 return;
1856 }
1857
1858 #ifdef HAVE_KRB5
1859
1860 static bool manage_client_krb5_init(struct spnego_data spnego)
1861 {
1862 char *principal;
1863 DATA_BLOB tkt, tkt_wrapped, to_server;
1864 DATA_BLOB session_key_krb5 = data_blob_null;
1865 struct spnego_data reply;
1866 char *reply_base64;
1867 int retval;
1868
1869 const char *my_mechs[] = {OID_KERBEROS5_OLD, NULL};
1870 ssize_t len;
1871 TALLOC_CTX *ctx = talloc_tos();
1872
1873 principal = spnego.negTokenInit.targetPrincipal;
1874
1875 /* We may not be allowed to use the server-supplied SPNEGO principal, or it may not have been supplied to us
1876 */
1877 if (!lp_client_use_spnego_principal() || strequal(principal, ADS_IGNORE_PRINCIPAL)) {
1878 principal = NULL;
1879 }
1880
1881 if (principal == NULL &&
1882 opt_target_service && opt_target_hostname && !is_ipaddress(opt_target_hostname)) {
1883 DEBUG(3,("manage_client_krb5_init: using target "
1884 "hostname not SPNEGO principal\n"));
1885
1886 principal = kerberos_get_principal_from_service_hostname(talloc_tos(),
1887 opt_target_service,
1888 opt_target_hostname,
1889 lp_realm());
1890
1891 if (!principal) {
1892 return false;
1893 }
1894
1895 DEBUG(3,("manage_client_krb5_init: guessed "
1896 "server principal=%s\n",
1897 principal ? principal : "<null>"));
1898 }
1899
1900 if (principal == NULL) {
1901 DEBUG(3,("manage_client_krb5_init: could not guess server principal\n"));
1902 return false;
1903 }
1904
1905 retval = cli_krb5_get_ticket(ctx, principal, 0,
1906 &tkt, &session_key_krb5,
1907 0, NULL, NULL, NULL);
1908 if (retval) {
1909 char *user = NULL;
1910
1911 /* Let's try to first get the TGT, for that we need a
1912 password. */
1913
1914 if (opt_password == NULL) {
1915 DEBUG(10, ("Requesting password\n"));
1916 x_fprintf(x_stdout, "PW\n");
1917 return True;
1918 }
1919
1920 user = talloc_asprintf(talloc_tos(), "%s@%s", opt_username, opt_domain);
1921 if (!user) {
1922 return false;
1923 }
1924
1925 if ((retval = kerberos_kinit_password(user, opt_password, 0, NULL))) {
1926 DEBUG(10, ("Requesting TGT failed: %s\n", error_message(retval)));
1927 return False;
1928 }
1929
1930 retval = cli_krb5_get_ticket(ctx, principal, 0,
1931 &tkt, &session_key_krb5,
1932 0, NULL, NULL, NULL);
1933 if (retval) {
1934 DEBUG(10, ("Kinit suceeded, but getting a ticket failed: %s\n", error_message(retval)));
1935 return False;
1936 }
1937
1938 }
1939
1940 /* wrap that up in a nice GSS-API wrapping */
1941 tkt_wrapped = spnego_gen_krb5_wrap(ctx, tkt, TOK_ID_KRB_AP_REQ);
1942
1943 data_blob_free(&session_key_krb5);
1944
1945 ZERO_STRUCT(reply);
1946
1947 reply.type = SPNEGO_NEG_TOKEN_INIT;
1948 reply.negTokenInit.mechTypes = my_mechs;
1949 reply.negTokenInit.reqFlags = data_blob_null;
1950 reply.negTokenInit.reqFlagsPadding = 0;
1951 reply.negTokenInit.mechToken = tkt_wrapped;
1952 reply.negTokenInit.mechListMIC = data_blob_null;
1953
1954 len = spnego_write_data(ctx, &to_server, &reply);
1955 data_blob_free(&tkt);
1956
1957 if (len == -1) {
1958 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1959 return False;
1960 }
1961
1962 reply_base64 = base64_encode_data_blob(talloc_tos(), to_server);
1963 x_fprintf(x_stdout, "KK %s *\n", reply_base64);
1964
1965 TALLOC_FREE(reply_base64);
1966 data_blob_free(&to_server);
1967 DEBUG(10, ("sent GSS-SPNEGO KERBEROS5 negTokenInit\n"));
1968 return True;
1969 }
1970
1971 static void manage_client_krb5_targ(struct spnego_data spnego)
1972 {
1973 switch (spnego.negTokenTarg.negResult) {
1974 case SPNEGO_ACCEPT_INCOMPLETE:
1975 DEBUG(1, ("Got a Kerberos negTokenTarg with ACCEPT_INCOMPLETE\n"));
1976 x_fprintf(x_stdout, "BH Got a Kerberos negTokenTarg with "
1977 "ACCEPT_INCOMPLETE\n");
1978 break;
1979 case SPNEGO_ACCEPT_COMPLETED:
1980 DEBUG(10, ("Accept completed\n"));
1981 x_fprintf(x_stdout, "AF\n");
1982 break;
1983 case SPNEGO_REJECT:
1984 DEBUG(10, ("Rejected\n"));
1985 x_fprintf(x_stdout, "NA\n");
1986 break;
1987 default:
1988 DEBUG(1, ("Got an invalid negTokenTarg\n"));
1989 x_fprintf(x_stdout, "AF\n");
1990 }
1991 }
1992
1993 #endif
1994
1995 static void manage_gss_spnego_client_request(enum stdio_helper_mode stdio_helper_mode,
1996 struct loadparm_context *lp_ctx,
1997 struct ntlm_auth_state *state,
1998 char *buf, int length, void **private2)
1999 {
2000 DATA_BLOB request;
2001 struct spnego_data spnego;
2002 ssize_t len;
2003 TALLOC_CTX *ctx = talloc_tos();
2004
2005 if (!opt_username || !*opt_username) {
2006 x_fprintf(x_stderr, "username must be specified!\n\n");
2007 exit(1);
2008 }
2009
2010 if (strlen(buf) <= 3) {
2011 DEBUG(1, ("SPNEGO query [%s] too short\n", buf));
2012 x_fprintf(x_stdout, "BH SPNEGO query too short\n");
2013 return;
2014 }
2015
2016 request = base64_decode_data_blob(buf+3);
2017
2018 if (strncmp(buf, "PW ", 3) == 0) {
2019
2020 /* We asked for a password and obviously got it :-) */
2021
2022 opt_password = SMB_STRNDUP((const char *)request.data, request.length);
2023
2024 if (opt_password == NULL) {
2025 DEBUG(1, ("Out of memory\n"));
2026 x_fprintf(x_stdout, "BH Out of memory\n");
2027 data_blob_free(&request);
2028 return;
2029 }
2030
2031 x_fprintf(x_stdout, "OK\n");
2032 data_blob_free(&request);
2033 return;
2034 }
2035
2036 if ( (strncmp(buf, "TT ", 3) != 0) &&
2037 (strncmp(buf, "AF ", 3) != 0) &&
2038 (strncmp(buf, "NA ", 3) != 0) ) {
2039 DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
2040 x_fprintf(x_stdout, "BH SPNEGO request invalid\n");
2041 data_blob_free(&request);
2042 return;
2043 }
2044
2045 /* So we got a server challenge to generate a SPNEGO
2046 client-to-server request... */
2047
2048 len = spnego_read_data(ctx, request, &spnego);
2049 data_blob_free(&request);
2050
2051 if (len == -1) {
2052 DEBUG(1, ("Could not read SPNEGO data for [%s]\n", buf));
2053 x_fprintf(x_stdout, "BH Could not read SPNEGO data\n");
2054 return;
2055 }
2056
2057 if (spnego.type == SPNEGO_NEG_TOKEN_INIT) {
2058
2059 /* The server offers a list of mechanisms */
2060
2061 const char *const *mechType = spnego.negTokenInit.mechTypes;
2062
2063 while (*mechType != NULL) {
2064
2065 #ifdef HAVE_KRB5
2066 if ( (strcmp(*mechType, OID_KERBEROS5_OLD) == 0) ||
2067 (strcmp(*mechType, OID_KERBEROS5) == 0) ) {
2068 if (manage_client_krb5_init(spnego))
2069 goto out;
2070 }
2071 #endif
2072
2073 if (strcmp(*mechType, OID_NTLMSSP) == 0) {
2074 if (manage_client_ntlmssp_init(spnego))
2075 goto out;
2076 }
2077
2078 mechType++;
2079 }
2080
2081 DEBUG(1, ("Server offered no compatible mechanism\n"));
2082 x_fprintf(x_stdout, "BH Server offered no compatible mechanism\n");
2083 return;
2084 }
2085
2086 if (spnego.type == SPNEGO_NEG_TOKEN_TARG) {
2087
2088 if (spnego.negTokenTarg.supportedMech == NULL) {
2089 /* On accept/reject Windows does not send the
2090 mechanism anymore. Handle that here and
2091 shut down the mechanisms. */
2092
2093 switch (spnego.negTokenTarg.negResult) {
2094 case SPNEGO_ACCEPT_COMPLETED:
2095 x_fprintf(x_stdout, "AF\n");
2096 break;
2097 case SPNEGO_REJECT:
2098 x_fprintf(x_stdout, "NA\n");
2099 break;
2100 default:
2101 DEBUG(1, ("Got a negTokenTarg with no mech and an "
2102 "unknown negResult: %d\n",
2103 spnego.negTokenTarg.negResult));
2104 x_fprintf(x_stdout, "BH Got a negTokenTarg with"
2105 " no mech and an unknown "
2106 "negResult\n");
2107 }
2108
2109 TALLOC_FREE(client_ntlmssp_state);
2110 goto out;
2111 }
2112
2113 if (strcmp(spnego.negTokenTarg.supportedMech,
2114 OID_NTLMSSP) == 0) {
2115 manage_client_ntlmssp_targ(spnego);
2116 goto out;
2117 }
2118
2119 #if HAVE_KRB5
2120 if (strcmp(spnego.negTokenTarg.supportedMech,
2121 OID_KERBEROS5_OLD) == 0) {
2122 manage_client_krb5_targ(spnego);
2123 goto out;
2124 }
2125 #endif
2126
2127 }
2128
2129 DEBUG(1, ("Got an SPNEGO token I could not handle [%s]!\n", buf));
2130 x_fprintf(x_stdout, "BH Got an SPNEGO token I could not handle\n");
2131 return;
2132
2133 out:
2134 spnego_free_data(&spnego);
2135 return;
2136 }
2137
2138 static void manage_ntlm_server_1_request(enum stdio_helper_mode stdio_helper_mode,
2139 struct loadparm_context *lp_ctx,
2140 struct ntlm_auth_state *state,
2141 char *buf, int length, void **private2)
2142 {
2143 char *request, *parameter;
2144 static DATA_BLOB challenge;
2145 static DATA_BLOB lm_response;
2146 static DATA_BLOB nt_response;
2147 static char *full_username;
2148 static char *username;
2149 static char *domain;
2150 static char *plaintext_password;
2151 static bool ntlm_server_1_user_session_key;
2152 static bool ntlm_server_1_lm_session_key;
2153
2154 if (strequal(buf, ".")) {
2155 if (!full_username && !username) {
2156 x_fprintf(x_stdout, "Error: No username supplied!\n");
2157 } else if (plaintext_password) {
2158 /* handle this request as plaintext */
2159 if (!full_username) {
2160 if (asprintf(&full_username, "%s%c%s", domain, winbind_separator(), username) == -1) {
2161 x_fprintf(x_stdout, "Error: Out of memory in asprintf!\n.\n");
2162 return;
2163 }
2164 }
2165 if (check_plaintext_auth(full_username, plaintext_password, False)) {
2166 x_fprintf(x_stdout, "Authenticated: Yes\n");
2167 } else {
2168 x_fprintf(x_stdout, "Authenticated: No\n");
2169 }
2170 } else if (!lm_response.data && !nt_response.data) {
2171 x_fprintf(x_stdout, "Error: No password supplied!\n");
2172 } else if (!challenge.data) {
2173 x_fprintf(x_stdout, "Error: No lanman-challenge supplied!\n");
2174 } else {
2175 char *error_string = NULL;
2176 uchar lm_key[8];
2177 uchar user_session_key[16];
2178 uint32 flags = 0;
2179
2180 if (full_username && !username) {
2181 fstring fstr_user;
2182 fstring fstr_domain;
2183
2184 if (!parse_ntlm_auth_domain_user(full_username, fstr_user, fstr_domain)) {
2185 /* username might be 'tainted', don't print into our new-line deleimianted stream */
2186 x_fprintf(x_stdout, "Error: Could not parse into domain and username\n");
2187 }
2188 SAFE_FREE(username);
2189 SAFE_FREE(domain);
2190 username = smb_xstrdup(fstr_user);
2191 domain = smb_xstrdup(fstr_domain);
2192 }
2193
2194 if (!domain) {
2195 domain = smb_xstrdup(get_winbind_domain());
2196 }
2197
2198 if (ntlm_server_1_lm_session_key)
2199 flags |= WBFLAG_PAM_LMKEY;
2200
2201 if (ntlm_server_1_user_session_key)
2202 flags |= WBFLAG_PAM_USER_SESSION_KEY;
2203
2204 if (!NT_STATUS_IS_OK(
2205 contact_winbind_auth_crap(username,
2206 domain,
2207 lp_netbios_name(),
2208 &challenge,
2209 &lm_response,
2210 &nt_response,
2211 flags, 0,
2212 lm_key,
2213 user_session_key,
2214 &error_string,
2215 NULL))) {
2216
2217 x_fprintf(x_stdout, "Authenticated: No\n");
2218 x_fprintf(x_stdout, "Authentication-Error: %s\n.\n", error_string);
2219 } else {
2220 static char zeros[16];
2221 char *hex_lm_key;
2222 char *hex_user_session_key;
2223
2224 x_fprintf(x_stdout, "Authenticated: Yes\n");
2225
2226 if (ntlm_server_1_lm_session_key
2227 && (memcmp(zeros, lm_key,
2228 sizeof(lm_key)) != 0)) {
2229 hex_lm_key = hex_encode_talloc(NULL,
2230 (const unsigned char *)lm_key,
2231 sizeof(lm_key));
2232 x_fprintf(x_stdout, "LANMAN-Session-Key: %s\n", hex_lm_key);
2233 TALLOC_FREE(hex_lm_key);
2234 }
2235
2236 if (ntlm_server_1_user_session_key
2237 && (memcmp(zeros, user_session_key,
2238 sizeof(user_session_key)) != 0)) {
2239 hex_user_session_key = hex_encode_talloc(NULL,
2240 (const unsigned char *)user_session_key,
2241 sizeof(user_session_key));
2242 x_fprintf(x_stdout, "User-Session-Key: %s\n", hex_user_session_key);
2243 TALLOC_FREE(hex_user_session_key);
2244 }
2245 }
2246 SAFE_FREE(error_string);
2247 }
2248 /* clear out the state */
2249 challenge = data_blob_null;
2250 nt_response = data_blob_null;
2251 lm_response = data_blob_null;
2252 SAFE_FREE(full_username);
2253 SAFE_FREE(username);
2254 SAFE_FREE(domain);
2255 SAFE_FREE(plaintext_password);
2256 ntlm_server_1_user_session_key = False;
2257 ntlm_server_1_lm_session_key = False;
2258 x_fprintf(x_stdout, ".\n");
2259
2260 return;
2261 }
2262
2263 request = buf;
2264
2265 /* Indicates a base64 encoded structure */
2266 parameter = strstr_m(request, ":: ");
2267 if (!parameter) {
2268 parameter = strstr_m(request, ": ");
2269
2270 if (!parameter) {
2271 DEBUG(0, ("Parameter not found!\n"));
2272 x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
2273 return;
2274 }
2275
2276 parameter[0] ='\0';
2277 parameter++;
2278 parameter[0] ='\0';
2279 parameter++;
2280
2281 } else {
2282 parameter[0] ='\0';
2283 parameter++;
2284 parameter[0] ='\0';
2285 parameter++;
2286 parameter[0] ='\0';
2287 parameter++;
2288
2289 base64_decode_inplace(parameter);
2290 }
2291
2292 if (strequal(request, "LANMAN-Challenge")) {
2293 challenge = strhex_to_data_blob(NULL, parameter);
2294 if (challenge.length != 8) {
2295 x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 8)\n.\n",
2296 parameter,
2297 (int)challenge.length);
2298 challenge = data_blob_null;
2299 }
2300 } else if (strequal(request, "NT-Response")) {
2301 nt_response = strhex_to_data_blob(NULL, parameter);
2302 if (nt_response.length < 24) {
2303 x_fprintf(x_stdout, "Error: hex decode of %s failed! (only got %d bytes, needed at least 24)\n.\n",
2304 parameter,
2305 (int)nt_response.length);
2306 nt_response = data_blob_null;
2307 }
2308 } else if (strequal(request, "LANMAN-Response")) {
2309 lm_response = strhex_to_data_blob(NULL, parameter);
2310 if (lm_response.length != 24) {
2311 x_fprintf(x_stdout, "Error: hex decode of %s failed! (got %d bytes, expected 24)\n.\n",
2312 parameter,
2313 (int)lm_response.length);
2314 lm_response = data_blob_null;
2315 }
2316 } else if (strequal(request, "Password")) {
2317 plaintext_password = smb_xstrdup(parameter);
2318 } else if (strequal(request, "NT-Domain")) {
2319 domain = smb_xstrdup(parameter);
2320 } else if (strequal(request, "Username")) {
2321 username = smb_xstrdup(parameter);
2322 } else if (strequal(request, "Full-Username")) {
2323 full_username = smb_xstrdup(parameter);
2324 } else if (strequal(request, "Request-User-Session-Key")) {
2325 ntlm_server_1_user_session_key = strequal(parameter, "Yes");
2326 } else if (strequal(request, "Request-LanMan-Session-Key")) {
2327 ntlm_server_1_lm_session_key = strequal(parameter, "Yes");
2328 } else {
2329 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
2330 }
2331 }
2332
2333 static void manage_ntlm_change_password_1_request(enum stdio_helper_mode stdio_helper_mode,
2334 struct loadparm_context *lp_ctx,
2335 struct ntlm_auth_state *state,
2336 char *buf, int length, void **private2)
2337 {
2338 char *request, *parameter;
2339 static DATA_BLOB new_nt_pswd;
2340 static DATA_BLOB old_nt_hash_enc;
2341 static DATA_BLOB new_lm_pswd;
2342 static DATA_BLOB old_lm_hash_enc;
2343 static char *full_username = NULL;
2344 static char *username = NULL;
2345 static char *domain = NULL;
2346 static char *newpswd = NULL;
2347 static char *oldpswd = NULL;
2348
2349 if (strequal(buf, ".")) {
2350 if(newpswd && oldpswd) {
2351 uchar old_nt_hash[16];
2352 uchar old_lm_hash[16];
2353 uchar new_nt_hash[16];
2354 uchar new_lm_hash[16];
2355
2356 new_nt_pswd = data_blob(NULL, 516);
2357 old_nt_hash_enc = data_blob(NULL, 16);
2358
2359 /* Calculate the MD4 hash (NT compatible) of the
2360 * password */
2361 E_md4hash(oldpswd, old_nt_hash);
2362 E_md4hash(newpswd, new_nt_hash);
2363
2364 /* E_deshash returns false for 'long'
2365 passwords (> 14 DOS chars).
2366
2367 Therefore, don't send a buffer
2368 encrypted with the truncated hash
2369 (it could allow an even easier
2370 attack on the password)
2371
2372 Likewise, obey the admin's restriction
2373 */
2374
2375 if (lp_client_lanman_auth() &&
2376 E_deshash(newpswd, new_lm_hash) &&
2377 E_deshash(oldpswd, old_lm_hash)) {
2378 new_lm_pswd = data_blob(NULL, 516);
2379 old_lm_hash_enc = data_blob(NULL, 16);
2380 encode_pw_buffer(new_lm_pswd.data, newpswd,
2381 STR_UNICODE);
2382
2383 arcfour_crypt(new_lm_pswd.data, old_nt_hash, 516);
2384 E_old_pw_hash(new_nt_hash, old_lm_hash,
2385 old_lm_hash_enc.data);
2386 } else {
2387 new_lm_pswd.data = NULL;
2388 new_lm_pswd.length = 0;
2389 old_lm_hash_enc.data = NULL;
2390 old_lm_hash_enc.length = 0;
2391 }
2392
2393 encode_pw_buffer(new_nt_pswd.data, newpswd,
2394 STR_UNICODE);
2395
2396 arcfour_crypt(new_nt_pswd.data, old_nt_hash, 516);
2397 E_old_pw_hash(new_nt_hash, old_nt_hash,
2398 old_nt_hash_enc.data);
2399 }
2400
2401 if (!full_username && !username) {
2402 x_fprintf(x_stdout, "Error: No username supplied!\n");
2403 } else if ((!new_nt_pswd.data || !old_nt_hash_enc.data) &&
2404 (!new_lm_pswd.data || old_lm_hash_enc.data) ) {
2405 x_fprintf(x_stdout, "Error: No NT or LM password "
2406 "blobs supplied!\n");
2407 } else {
2408 char *error_string = NULL;
2409
2410 if (full_username && !username) {
2411 fstring fstr_user;
2412 fstring fstr_domain;
2413
2414 if (!parse_ntlm_auth_domain_user(full_username,
2415 fstr_user,
2416 fstr_domain)) {
2417 /* username might be 'tainted', don't
2418 * print into our new-line
2419 * deleimianted stream */
2420 x_fprintf(x_stdout, "Error: Could not "
2421 "parse into domain and "
2422 "username\n");
2423 SAFE_FREE(username);
2424 username = smb_xstrdup(full_username);
2425 } else {
2426 SAFE_FREE(username);
2427 SAFE_FREE(domain);
2428 username = smb_xstrdup(fstr_user);
2429 domain = smb_xstrdup(fstr_domain);
2430 }
2431
2432 }
2433
2434 if(!NT_STATUS_IS_OK(contact_winbind_change_pswd_auth_crap(
2435 username, domain,
2436 new_nt_pswd,
2437 old_nt_hash_enc,
2438 new_lm_pswd,
2439 old_lm_hash_enc,
2440 &error_string))) {
2441 x_fprintf(x_stdout, "Password-Change: No\n");
2442 x_fprintf(x_stdout, "Password-Change-Error: "
2443 "%s\n.\n", error_string);
2444 } else {
2445 x_fprintf(x_stdout, "Password-Change: Yes\n");
2446 }
2447
2448 SAFE_FREE(error_string);
2449 }
2450 /* clear out the state */
2451 new_nt_pswd = data_blob_null;
2452 old_nt_hash_enc = data_blob_null;
2453 new_lm_pswd = data_blob_null;
2454 old_nt_hash_enc = data_blob_null;
2455 SAFE_FREE(full_username);
2456 SAFE_FREE(username);
2457 SAFE_FREE(domain);
2458 SAFE_FREE(newpswd);
2459 SAFE_FREE(oldpswd);
2460 x_fprintf(x_stdout, ".\n");
2461
2462 return;
2463 }
2464
2465 request = buf;
2466
2467 /* Indicates a base64 encoded structure */
2468 parameter = strstr_m(request, ":: ");
2469 if (!parameter) {
2470 parameter = strstr_m(request, ": ");
2471
2472 if (!parameter) {
2473 DEBUG(0, ("Parameter not found!\n"));
2474 x_fprintf(x_stdout, "Error: Parameter not found!\n.\n");
2475 return;
2476 }
2477
2478 parameter[0] ='\0';
2479 parameter++;
2480 parameter[0] ='\0';
2481 parameter++;
2482 } else {
2483 parameter[0] ='\0';
2484 parameter++;
2485 parameter[0] ='\0';
2486 parameter++;
2487 parameter[0] ='\0';
2488 parameter++;
2489
2490 base64_decode_inplace(parameter);
2491 }
2492
2493 if (strequal(request, "new-nt-password-blob")) {
2494 new_nt_pswd = strhex_to_data_blob(NULL, parameter);
2495 if (new_nt_pswd.length != 516) {
2496 x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2497 "(got %d bytes, expected 516)\n.\n",
2498 parameter,
2499 (int)new_nt_pswd.length);
2500 new_nt_pswd = data_blob_null;
2501 }
2502 } else if (strequal(request, "old-nt-hash-blob")) {
2503 old_nt_hash_enc = strhex_to_data_blob(NULL, parameter);
2504 if (old_nt_hash_enc.length != 16) {
2505 x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2506 "(got %d bytes, expected 16)\n.\n",
2507 parameter,
2508 (int)old_nt_hash_enc.length);
2509 old_nt_hash_enc = data_blob_null;
2510 }
2511 } else if (strequal(request, "new-lm-password-blob")) {
2512 new_lm_pswd = strhex_to_data_blob(NULL, parameter);
2513 if (new_lm_pswd.length != 516) {
2514 x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2515 "(got %d bytes, expected 516)\n.\n",
2516 parameter,
2517 (int)new_lm_pswd.length);
2518 new_lm_pswd = data_blob_null;
2519 }
2520 }
2521 else if (strequal(request, "old-lm-hash-blob")) {
2522 old_lm_hash_enc = strhex_to_data_blob(NULL, parameter);
2523 if (old_lm_hash_enc.length != 16)
2524 {
2525 x_fprintf(x_stdout, "Error: hex decode of %s failed! "
2526 "(got %d bytes, expected 16)\n.\n",
2527 parameter,
2528 (int)old_lm_hash_enc.length);
2529 old_lm_hash_enc = data_blob_null;
2530 }
2531 } else if (strequal(request, "nt-domain")) {
2532 domain = smb_xstrdup(parameter);
2533 } else if(strequal(request, "username")) {
2534 username = smb_xstrdup(parameter);
2535 } else if(strequal(request, "full-username")) {
2536 username = smb_xstrdup(parameter);
2537 } else if(strequal(request, "new-password")) {
2538 newpswd = smb_xstrdup(parameter);
2539 } else if (strequal(request, "old-password")) {
2540 oldpswd = smb_xstrdup(parameter);
2541 } else {
2542 x_fprintf(x_stdout, "Error: Unknown request %s\n.\n", request);
2543 }
2544 }
2545
2546 static void manage_squid_request(enum stdio_helper_mode stdio_helper_mode,
2547 struct loadparm_context *lp_ctx,
2548 struct ntlm_auth_state *state,
2549 stdio_helper_function fn, void **private2)
2550 {
2551 char *buf;
2552 char tmp[INITIAL_BUFFER_SIZE+1];
2553 int length, buf_size = 0;
2554 char *c;
2555
2556 buf = talloc_strdup(state->mem_ctx, "");
2557 if (!buf) {
2558 DEBUG(0, ("Failed to allocate input buffer.\n"));
2559 x_fprintf(x_stderr, "ERR\n");
2560 exit(1);
2561 }
2562
2563 do {
2564
2565 /* this is not a typo - x_fgets doesn't work too well under
2566 * squid */
2567 if (fgets(tmp, sizeof(tmp)-1, stdin) == NULL) {
2568 if (ferror(stdin)) {
2569 DEBUG(1, ("fgets() failed! dying..... errno=%d "
2570 "(%s)\n", ferror(stdin),
2571 strerror(ferror(stdin))));
2572
2573 exit(1);
2574 }
2575 exit(0);
2576 }
2577
2578 buf = talloc_strdup_append_buffer(buf, tmp);
2579 buf_size += INITIAL_BUFFER_SIZE;
2580
2581 if (buf_size > MAX_BUFFER_SIZE) {
2582 DEBUG(2, ("Oversized message\n"));
2583 x_fprintf(x_stderr, "ERR\n");
2584 talloc_free(buf);
2585 return;
2586 }
2587
2588 c = strchr(buf, '\n');
2589 } while (c == NULL);
2590
2591 *c = '\0';
2592 length = c-buf;
2593
2594 DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
2595
2596 if (buf[0] == '\0') {
2597 DEBUG(2, ("Invalid Request\n"));
2598 x_fprintf(x_stderr, "ERR\n");
2599 talloc_free(buf);
2600 return;
2601 }
2602
2603 fn(stdio_helper_mode, lp_ctx, state, buf, length, private2);
2604 talloc_free(buf);
2605 }
2606
2607
2608 static void squid_stream(enum stdio_helper_mode stdio_mode,
2609 struct loadparm_context *lp_ctx,
2610 stdio_helper_function fn) {
2611 TALLOC_CTX *mem_ctx;
2612 struct ntlm_auth_state *state;
2613
2614 /* initialize FDescs */
2615 x_setbuf(x_stdout, NULL);
2616 x_setbuf(x_stderr, NULL);
2617
2618 mem_ctx = talloc_init("ntlm_auth");
2619 if (!mem_ctx) {
2620 DEBUG(0, ("squid_stream: Failed to create talloc context\n"));
2621 x_fprintf(x_stderr, "ERR\n");
2622 exit(1);
2623 }
2624
2625 state = talloc_zero(mem_ctx, struct ntlm_auth_state);
2626 if (!state) {
2627 DEBUG(0, ("squid_stream: Failed to talloc ntlm_auth_state\n"));
2628 x_fprintf(x_stderr, "ERR\n");
2629 exit(1);
2630 }
2631
2632 state->mem_ctx = mem_ctx;
2633 state->helper_mode = stdio_mode;
2634
2635 while(1) {
2636 TALLOC_CTX *frame = talloc_stackframe();
2637 manage_squid_request(stdio_mode, lp_ctx, state, fn, NULL);
2638 TALLOC_FREE(frame);
2639 }
2640 }
2641
2642
2643 /* Authenticate a user with a challenge/response */
2644
2645 static bool check_auth_crap(void)
2646 {
2647 NTSTATUS nt_status;
2648 uint32 flags = 0;
2649 char lm_key[8];
2650 char user_session_key[16];
2651 char *hex_lm_key;
2652 char *hex_user_session_key;
2653 char *error_string;
2654 static uint8 zeros[16];
2655
2656 x_setbuf(x_stdout, NULL);
2657
2658 if (request_lm_key)
2659 flags |= WBFLAG_PAM_LMKEY;
2660
2661 if (request_user_session_key)
2662 flags |= WBFLAG_PAM_USER_SESSION_KEY;
2663
2664 flags |= WBFLAG_PAM_NT_STATUS_SQUASH;
2665
2666 nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
2667 opt_workstation,
2668 &opt_challenge,
2669 &opt_lm_response,
2670 &opt_nt_response,
2671 flags, 0,
2672 (unsigned char *)lm_key,
2673 (unsigned char *)user_session_key,
2674 &error_string, NULL);
2675
2676 if (!NT_STATUS_IS_OK(nt_status)) {
2677 x_fprintf(x_stdout, "%s (0x%x)\n",
2678 error_string,
2679 NT_STATUS_V(nt_status));
2680 SAFE_FREE(error_string);
2681 return False;
2682 }
2683
2684 if (request_lm_key
2685 && (memcmp(zeros, lm_key,
2686 sizeof(lm_key)) != 0)) {
2687 hex_lm_key = hex_encode_talloc(talloc_tos(), (const unsigned char *)lm_key,
2688 sizeof(lm_key));
2689 x_fprintf(x_stdout, "LM_KEY: %s\n", hex_lm_key);
2690 TALLOC_FREE(hex_lm_key);
2691 }
2692 if (request_user_session_key
2693 && (memcmp(zeros, user_session_key,
2694 sizeof(user_session_key)) != 0)) {
2695 hex_user_session_key = hex_encode_talloc(talloc_tos(), (const unsigned char *)user_session_key,
2696 sizeof(user_session_key));
2697 x_fprintf(x_stdout, "NT_KEY: %s\n", hex_user_session_key);
2698 TALLOC_FREE(hex_user_session_key);
2699 }
2700
2701 return True;
2702 }
2703
2704 /* Main program */
2705
2706 enum {
2707 OPT_USERNAME = 1000,
2708 OPT_DOMAIN,
2709 OPT_WORKSTATION,
2710 OPT_CHALLENGE,
2711 OPT_RESPONSE,
2712 OPT_LM,
2713 OPT_NT,
2714 OPT_PASSWORD,
2715 OPT_LM_KEY,
2716 OPT_USER_SESSION_KEY,
2717 OPT_DIAGNOSTICS,
2718 OPT_REQUIRE_MEMBERSHIP,
2719 OPT_USE_CACHED_CREDS,
2720 OPT_PAM_WINBIND_CONF,
2721 OPT_TARGET_SERVICE,
2722 OPT_TARGET_HOSTNAME
2723 };
2724
2725 int main(int argc, const char **argv)
2726 {
2727 TALLOC_CTX *frame = talloc_stackframe();
2728 int opt;
2729 static const char *helper_protocol;
2730 static int diagnostics;
2731
2732 static const char *hex_challenge;
2733 static const char *hex_lm_response;
2734 static const char *hex_nt_response;
2735 struct loadparm_context *lp_ctx;
2736 poptContext pc;
2737
2738 /* NOTE: DO NOT change this interface without considering the implications!
2739 This is an external interface, which other programs will use to interact
2740 with this helper.
2741 */
2742
2743 /* We do not use single-letter command abbreviations, because they harm future
2744 interface stability. */
2745
2746 struct poptOption long_options[] = {
2747 POPT_AUTOHELP
2748 { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
2749 { "username", 0, POPT_ARG_STRING, &opt_username, OPT_USERNAME, "username"},
2750 { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
2751 { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
2752 { "challenge", 0, POPT_ARG_STRING, &hex_challenge, OPT_CHALLENGE, "challenge (HEX encoded)"},
2753 { "lm-response", 0, POPT_ARG_STRING, &hex_lm_response, OPT_LM, "LM Response to the challenge (HEX encoded)"},
2754 { "nt-response", 0, POPT_ARG_STRING, &hex_nt_response, OPT_NT, "NT or NTLMv2 Response to the challenge (HEX encoded)"},
2755 { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
2756 { "request-lm-key", 0, POPT_ARG_NONE, &request_lm_key, OPT_LM_KEY, "Retrieve LM session key"},
2757 { "request-nt-key", 0, POPT_ARG_NONE, &request_user_session_key, OPT_USER_SESSION_KEY, "Retrieve User (NT) session key"},
2758 { "use-cached-creds", 0, POPT_ARG_NONE, &use_cached_creds, OPT_USE_CACHED_CREDS, "Use cached credentials if no password is given"},
2759 { "diagnostics", 0, POPT_ARG_NONE, &diagnostics,
2760 OPT_DIAGNOSTICS,
2761 "Perform diagnostics on the authentication chain"},
2762 { "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" },
2763 { "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" },
2764 { "target-service", 0, POPT_ARG_STRING, &opt_target_service, OPT_TARGET_SERVICE, "Target service (eg http)" },
2765 { "target-hostname", 0, POPT_ARG_STRING, &opt_target_hostname, OPT_TARGET_HOSTNAME, "Target hostname" },
2766 POPT_COMMON_CONFIGFILE
2767 POPT_COMMON_VERSION
2768 POPT_TABLEEND
2769 };
2770
2771 /* Samba client initialisation */
2772 load_case_tables();
2773
2774 setup_logging("ntlm_auth", DEBUG_STDERR);
2775
2776 /* Parse options */
2777
2778 pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
2779
2780 /* Parse command line options */
2781
2782 if (argc == 1) {
2783 poptPrintHelp(pc, stderr, 0);
2784 return 1;
2785 }
2786
2787 while((opt = poptGetNextOpt(pc)) != -1) {
2788 /* Get generic config options like --configfile */
2789 }
2790
2791 poptFreeContext(pc);
2792
2793 if (!lp_load_global(get_dyn_CONFIGFILE())) {
2794 d_fprintf(stderr, "ntlm_auth: error opening config file %s. Error was %s\n",
2795 get_dyn_CONFIGFILE(), strerror(errno));
2796 exit(1);
2797 }
2798
2799 pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
2800 POPT_CONTEXT_KEEP_FIRST);
2801
2802 while((opt = poptGetNextOpt(pc)) != -1) {
2803 switch (opt) {
2804 case OPT_CHALLENGE:
2805 opt_challenge = strhex_to_data_blob(NULL, hex_challenge);
2806 if (opt_challenge.length != 8) {
2807 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2808 hex_challenge,
2809 (int)opt_challenge.length);
2810 exit(1);
2811 }
2812 break;
2813 case OPT_LM:
2814 opt_lm_response = strhex_to_data_blob(NULL, hex_lm_response);
2815 if (opt_lm_response.length != 24) {
2816 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2817 hex_lm_response,
2818 (int)opt_lm_response.length);
2819 exit(1);
2820 }
2821 break;
2822
2823 case OPT_NT:
2824 opt_nt_response = strhex_to_data_blob(NULL, hex_nt_response);
2825 if (opt_nt_response.length < 24) {
2826 x_fprintf(x_stderr, "hex decode of %s failed! (only got %d bytes)\n",
2827 hex_nt_response,
2828 (int)opt_nt_response.length);
2829 exit(1);
2830 }
2831 break;
2832
2833 case OPT_REQUIRE_MEMBERSHIP:
2834 if (strncasecmp_m("S-", require_membership_of, 2) == 0) {
2835 require_membership_of_sid = require_membership_of;
2836 }
2837 break;
2838 }
2839 }
2840
2841 if (opt_username) {
2842 char *domain = SMB_STRDUP(opt_username);
2843 char *p = strchr_m(domain, *lp_winbind_separator());
2844 if (p) {
2845 opt_username = p+1;
2846 *p = '\0';
2847 if (opt_domain && !strequal(opt_domain, domain)) {
2848 x_fprintf(x_stderr, "Domain specified in username (%s) "
2849 "doesn't match specified domain (%s)!\n\n",
2850 domain, opt_domain);
2851 poptPrintHelp(pc, stderr, 0);
2852 exit(1);
2853 }
2854 opt_domain = domain;
2855 } else {
2856 SAFE_FREE(domain);
2857 }
2858 }
2859
2860 /* Note: if opt_domain is "" then send no domain */
2861 if (opt_domain == NULL) {
2862 opt_domain = get_winbind_domain();
2863 }
2864
2865 if (opt_workstation == NULL) {
2866 opt_workstation = "";
2867 }
2868
2869 lp_ctx = loadparm_init_s3(NULL, loadparm_s3_helpers());
2870 if (lp_ctx == NULL) {
2871 x_fprintf(x_stderr, "loadparm_init_s3() failed!\n");
2872 exit(1);
2873 }
2874
2875 if (helper_protocol) {
2876 int i;
2877 for (i=0; i<NUM_HELPER_MODES; i++) {
2878 if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
2879 squid_stream(stdio_helper_protocols[i].mode, lp_ctx, stdio_helper_protocols[i].fn);
2880 exit(0);
2881 }
2882 }
2883 x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol);
2884
2885 for (i=0; i<NUM_HELPER_MODES; i++) {
2886 x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name);
2887 }
2888
2889 exit(1);
2890 }
2891
2892 if (!opt_username || !*opt_username) {
2893 x_fprintf(x_stderr, "username must be specified!\n\n");
2894 poptPrintHelp(pc, stderr, 0);
2895 exit(1);
2896 }
2897
2898 if (opt_challenge.length) {
2899 if (!check_auth_crap()) {
2900 exit(1);
2901 }
2902 exit(0);
2903 }
2904
2905 if (!opt_password) {
2906 char pwd[256] = {0};
2907 int rc;
2908
2909 rc = samba_getpass("Password: ", pwd, sizeof(pwd), false, false);
2910 if (rc == 0) {
2911 opt_password = SMB_STRDUP(pwd);
2912 }
2913 }
2914
2915 if (diagnostics) {
2916 if (!diagnose_ntlm_auth()) {
2917 return 1;
2918 }
2919 } else {
2920 fstring user;
2921
2922 fstr_sprintf(user, "%s%c%s", opt_domain, winbind_separator(), opt_username);
2923 if (!check_plaintext_auth(user, opt_password, True)) {
2924 return 1;
2925 }
2926 }
2927
2928 /* Exit code */
2929
2930 poptFreeContext(pc);
2931 TALLOC_FREE(frame);
2932 return 0;
2933 }
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