1 /*
2 Unix SMB/CIFS implementation.
3
4 User credentials handling
5
6 Copyright (C) Jelmer Vernooij 2005
7 Copyright (C) Tim Potter 2001
8 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25 #include "includes.h"
26 #include "librpc/gen_ndr/samr.h" /* for struct samrPassword */
27 #include "auth/credentials/credentials.h"
28 #include "auth/credentials/credentials_krb5.h"
29 #include "libcli/auth/libcli_auth.h"
30
31 /**
32 * Create a new credentials structure
33 * @param mem_ctx TALLOC_CTX parent for credentials structure
34 */
cli_credentials_init(TALLOC_CTX * mem_ctx)35 struct cli_credentials *cli_credentials_init(TALLOC_CTX *mem_ctx)
36 {
37 struct cli_credentials *cred = talloc(mem_ctx, struct cli_credentials);
38 if (!cred) {
39 return cred;
40 }
41
42 cred->netlogon_creds = NULL;
43 cred->machine_account_pending = False;
44 cred->workstation_obtained = CRED_UNINITIALISED;
45 cred->username_obtained = CRED_UNINITIALISED;
46 cred->password_obtained = CRED_UNINITIALISED;
47 cred->domain_obtained = CRED_UNINITIALISED;
48 cred->realm_obtained = CRED_UNINITIALISED;
49 cred->ccache_obtained = CRED_UNINITIALISED;
50 cred->client_gss_creds_obtained = CRED_UNINITIALISED;
51 cred->server_gss_creds_obtained = CRED_UNINITIALISED;
52 cred->keytab_obtained = CRED_UNINITIALISED;
53 cred->principal_obtained = CRED_UNINITIALISED;
54
55 cred->old_password = NULL;
56 cred->smb_krb5_context = NULL;
57 cred->salt_principal = NULL;
58 cred->machine_account = False;
59
60 cred->bind_dn = NULL;
61
62 cred->tries = 3;
63 cred->callback_running = False;
64
65 cli_credentials_set_kerberos_state(cred, CRED_AUTO_USE_KERBEROS);
66
67 return cred;
68 }
69
cli_credentials_set_kerberos_state(struct cli_credentials * creds,enum credentials_use_kerberos use_kerberos)70 void cli_credentials_set_kerberos_state(struct cli_credentials *creds,
71 enum credentials_use_kerberos use_kerberos)
72 {
73 creds->use_kerberos = use_kerberos;
74 }
75
cli_credentials_get_kerberos_state(struct cli_credentials * creds)76 enum credentials_use_kerberos cli_credentials_get_kerberos_state(struct cli_credentials *creds)
77 {
78 return creds->use_kerberos;
79 }
80
81
82 /**
83 * Obtain the username for this credentials context.
84 * @param cred credentials context
85 * @retval The username set on this context.
86 * @note Return value will never be NULL except by programmer error.
87 */
cli_credentials_get_username(struct cli_credentials * cred)88 const char *cli_credentials_get_username(struct cli_credentials *cred)
89 {
90 if (cred->machine_account_pending) {
91 cli_credentials_set_machine_account(cred);
92 }
93
94 if (cred->username_obtained == CRED_CALLBACK &&
95 !cred->callback_running) {
96 cred->callback_running = True;
97 cred->username = cred->username_cb(cred);
98 cred->callback_running = False;
99 cred->username_obtained = CRED_SPECIFIED;
100 }
101
102 return cred->username;
103 }
104
cli_credentials_set_username(struct cli_credentials * cred,const char * val,enum credentials_obtained obtained)105 BOOL cli_credentials_set_username(struct cli_credentials *cred,
106 const char *val, enum credentials_obtained obtained)
107 {
108 if (obtained >= cred->username_obtained) {
109 cred->username = talloc_strdup(cred, val);
110 cred->username_obtained = obtained;
111 return True;
112 }
113
114 return False;
115 }
116
cli_credentials_set_username_callback(struct cli_credentials * cred,const char * (* username_cb)(struct cli_credentials *))117 BOOL cli_credentials_set_username_callback(struct cli_credentials *cred,
118 const char *(*username_cb) (struct cli_credentials *))
119 {
120 if (cred->username_obtained < CRED_CALLBACK) {
121 cred->username_cb = username_cb;
122 cred->username_obtained = CRED_CALLBACK;
123 return True;
124 }
125
126 return False;
127 }
128
cli_credentials_set_bind_dn(struct cli_credentials * cred,const char * bind_dn)129 BOOL cli_credentials_set_bind_dn(struct cli_credentials *cred,
130 const char *bind_dn)
131 {
132 cred->bind_dn = talloc_strdup(cred, bind_dn);
133 return True;
134 }
135
136 /**
137 * Obtain the BIND DN for this credentials context.
138 * @param cred credentials context
139 * @retval The username set on this context.
140 * @note Return value will be NULL if not specified explictly
141 */
cli_credentials_get_bind_dn(struct cli_credentials * cred)142 const char *cli_credentials_get_bind_dn(struct cli_credentials *cred)
143 {
144 return cred->bind_dn;
145 }
146
147
148 /**
149 * Obtain the client principal for this credentials context.
150 * @param cred credentials context
151 * @retval The username set on this context.
152 * @note Return value will never be NULL except by programmer error.
153 */
cli_credentials_get_principal(struct cli_credentials * cred,TALLOC_CTX * mem_ctx)154 const char *cli_credentials_get_principal(struct cli_credentials *cred, TALLOC_CTX *mem_ctx)
155 {
156 if (cred->machine_account_pending) {
157 cli_credentials_set_machine_account(cred);
158 }
159
160 if (cred->principal_obtained == CRED_CALLBACK &&
161 !cred->callback_running) {
162 cred->callback_running = True;
163 cred->principal = cred->principal_cb(cred);
164 cred->callback_running = False;
165 cred->principal_obtained = CRED_SPECIFIED;
166 }
167
168 if (cred->principal_obtained < cred->username_obtained) {
169 if (cred->domain_obtained > cred->realm_obtained) {
170 return talloc_asprintf(mem_ctx, "%s@%s",
171 cli_credentials_get_username(cred),
172 cli_credentials_get_domain(cred));
173 } else {
174 return talloc_asprintf(mem_ctx, "%s@%s",
175 cli_credentials_get_username(cred),
176 cli_credentials_get_realm(cred));
177 }
178 }
179 return talloc_reference(mem_ctx, cred->principal);
180 }
181
cli_credentials_set_principal(struct cli_credentials * cred,const char * val,enum credentials_obtained obtained)182 BOOL cli_credentials_set_principal(struct cli_credentials *cred,
183 const char *val,
184 enum credentials_obtained obtained)
185 {
186 if (obtained >= cred->principal_obtained) {
187 cred->principal = talloc_strdup(cred, val);
188 cred->principal_obtained = obtained;
189 return True;
190 }
191
192 return False;
193 }
194
195 /* Set a callback to get the principal. This could be a popup dialog,
196 * a terminal prompt or similar. */
197
cli_credentials_set_principal_callback(struct cli_credentials * cred,const char * (* principal_cb)(struct cli_credentials *))198 BOOL cli_credentials_set_principal_callback(struct cli_credentials *cred,
199 const char *(*principal_cb) (struct cli_credentials *))
200 {
201 if (cred->principal_obtained < CRED_CALLBACK) {
202 cred->principal_cb = principal_cb;
203 cred->principal_obtained = CRED_CALLBACK;
204 return True;
205 }
206
207 return False;
208 }
209
210 /* Some of our tools are 'anonymous by default'. This is a single
211 * function to determine if authentication has been explicitly
212 * requested */
213
cli_credentials_authentication_requested(struct cli_credentials * cred)214 BOOL cli_credentials_authentication_requested(struct cli_credentials *cred)
215 {
216 if (cred->bind_dn) {
217 return True;
218 }
219
220 if (cli_credentials_is_anonymous(cred)){
221 return False;
222 }
223
224 if (cred->principal_obtained >= CRED_SPECIFIED) {
225 return True;
226 }
227 if (cred->username_obtained >= CRED_SPECIFIED) {
228 return True;
229 }
230 return False;
231 }
232
233 /**
234 * Obtain the password for this credentials context.
235 * @param cred credentials context
236 * @retval If set, the cleartext password, otherwise NULL
237 */
cli_credentials_get_password(struct cli_credentials * cred)238 const char *cli_credentials_get_password(struct cli_credentials *cred)
239 {
240 if (cred->machine_account_pending) {
241 cli_credentials_set_machine_account(cred);
242 }
243
244 if (cred->password_obtained == CRED_CALLBACK &&
245 !cred->callback_running) {
246 cred->callback_running = True;
247 cred->password = cred->password_cb(cred);
248 cred->callback_running = False;
249 cred->password_obtained = CRED_CALLBACK_RESULT;
250 }
251
252 return cred->password;
253 }
254
255 /* Set a password on the credentials context, including an indication
256 * of 'how' the password was obtained */
257
cli_credentials_set_password(struct cli_credentials * cred,const char * val,enum credentials_obtained obtained)258 BOOL cli_credentials_set_password(struct cli_credentials *cred,
259 const char *val,
260 enum credentials_obtained obtained)
261 {
262 if (obtained >= cred->password_obtained) {
263 cred->password = talloc_strdup(cred, val);
264 cred->password_obtained = obtained;
265
266 cred->nt_hash = NULL;
267 return True;
268 }
269
270 return False;
271 }
272
cli_credentials_set_password_callback(struct cli_credentials * cred,const char * (* password_cb)(struct cli_credentials *))273 BOOL cli_credentials_set_password_callback(struct cli_credentials *cred,
274 const char *(*password_cb) (struct cli_credentials *))
275 {
276 if (cred->password_obtained < CRED_CALLBACK) {
277 cred->password_cb = password_cb;
278 cred->password_obtained = CRED_CALLBACK;
279 return True;
280 }
281
282 return False;
283 }
284
285 /**
286 * Obtain the 'old' password for this credentials context (used for join accounts).
287 * @param cred credentials context
288 * @retval If set, the cleartext password, otherwise NULL
289 */
cli_credentials_get_old_password(struct cli_credentials * cred)290 const char *cli_credentials_get_old_password(struct cli_credentials *cred)
291 {
292 if (cred->machine_account_pending) {
293 cli_credentials_set_machine_account(cred);
294 }
295
296 return cred->old_password;
297 }
298
cli_credentials_set_old_password(struct cli_credentials * cred,const char * val,enum credentials_obtained obtained)299 BOOL cli_credentials_set_old_password(struct cli_credentials *cred,
300 const char *val,
301 enum credentials_obtained obtained)
302 {
303 cred->old_password = talloc_strdup(cred, val);
304 return True;
305 }
306
307 /**
308 * Obtain the password, in the form MD4(unicode(password)) for this credentials context.
309 *
310 * Sometimes we only have this much of the password, while the rest of
311 * the time this call avoids calling E_md4hash themselves.
312 *
313 * @param cred credentials context
314 * @retval If set, the cleartext password, otherwise NULL
315 */
cli_credentials_get_nt_hash(struct cli_credentials * cred,TALLOC_CTX * mem_ctx)316 const struct samr_Password *cli_credentials_get_nt_hash(struct cli_credentials *cred,
317 TALLOC_CTX *mem_ctx)
318 {
319 const char *password = cli_credentials_get_password(cred);
320
321 if (password) {
322 struct samr_Password *nt_hash = talloc(mem_ctx, struct samr_Password);
323 if (!nt_hash) {
324 return NULL;
325 }
326
327 E_md4hash(password, nt_hash->hash);
328
329 return nt_hash;
330 } else {
331 return cred->nt_hash;
332 }
333 }
334
cli_credentials_set_nt_hash(struct cli_credentials * cred,const struct samr_Password * nt_hash,enum credentials_obtained obtained)335 BOOL cli_credentials_set_nt_hash(struct cli_credentials *cred,
336 const struct samr_Password *nt_hash,
337 enum credentials_obtained obtained)
338 {
339 if (obtained >= cred->password_obtained) {
340 cli_credentials_set_password(cred, NULL, obtained);
341 cred->nt_hash = talloc(cred, struct samr_Password);
342 *cred->nt_hash = *nt_hash;
343 return True;
344 }
345
346 return False;
347 }
348
349 /**
350 * Obtain the 'short' or 'NetBIOS' domain for this credentials context.
351 * @param cred credentials context
352 * @retval The domain set on this context.
353 * @note Return value will never be NULL except by programmer error.
354 */
cli_credentials_get_domain(struct cli_credentials * cred)355 const char *cli_credentials_get_domain(struct cli_credentials *cred)
356 {
357 if (cred->machine_account_pending) {
358 cli_credentials_set_machine_account(cred);
359 }
360
361 if (cred->domain_obtained == CRED_CALLBACK &&
362 !cred->callback_running) {
363 cred->callback_running = True;
364 cred->domain = cred->domain_cb(cred);
365 cred->callback_running = False;
366 cred->domain_obtained = CRED_SPECIFIED;
367 }
368
369 return cred->domain;
370 }
371
372
cli_credentials_set_domain(struct cli_credentials * cred,const char * val,enum credentials_obtained obtained)373 BOOL cli_credentials_set_domain(struct cli_credentials *cred,
374 const char *val,
375 enum credentials_obtained obtained)
376 {
377 if (obtained >= cred->domain_obtained) {
378 /* it is important that the domain be in upper case,
379 * particularly for the sensitive NTLMv2
380 * calculations */
381 cred->domain = strupper_talloc(cred, val);
382 cred->domain_obtained = obtained;
383 return True;
384 }
385
386 return False;
387 }
388
cli_credentials_set_domain_callback(struct cli_credentials * cred,const char * (* domain_cb)(struct cli_credentials *))389 BOOL cli_credentials_set_domain_callback(struct cli_credentials *cred,
390 const char *(*domain_cb) (struct cli_credentials *))
391 {
392 if (cred->domain_obtained < CRED_CALLBACK) {
393 cred->domain_cb = domain_cb;
394 cred->domain_obtained = CRED_CALLBACK;
395 return True;
396 }
397
398 return False;
399 }
400
401 /**
402 * Obtain the Kerberos realm for this credentials context.
403 * @param cred credentials context
404 * @retval The realm set on this context.
405 * @note Return value will never be NULL except by programmer error.
406 */
cli_credentials_get_realm(struct cli_credentials * cred)407 const char *cli_credentials_get_realm(struct cli_credentials *cred)
408 {
409 if (cred->machine_account_pending) {
410 cli_credentials_set_machine_account(cred);
411 }
412
413 if (cred->realm_obtained == CRED_CALLBACK &&
414 !cred->callback_running) {
415 cred->callback_running = True;
416 cred->realm = cred->realm_cb(cred);
417 cred->callback_running = False;
418 cred->realm_obtained = CRED_SPECIFIED;
419 }
420
421 return cred->realm;
422 }
423
424 /**
425 * Set the realm for this credentials context, and force it to
426 * uppercase for the sainity of our local kerberos libraries
427 */
cli_credentials_set_realm(struct cli_credentials * cred,const char * val,enum credentials_obtained obtained)428 BOOL cli_credentials_set_realm(struct cli_credentials *cred,
429 const char *val,
430 enum credentials_obtained obtained)
431 {
432 if (obtained >= cred->realm_obtained) {
433 cred->realm = strupper_talloc(cred, val);
434 cred->realm_obtained = obtained;
435 return True;
436 }
437
438 return False;
439 }
440
cli_credentials_set_realm_callback(struct cli_credentials * cred,const char * (* realm_cb)(struct cli_credentials *))441 BOOL cli_credentials_set_realm_callback(struct cli_credentials *cred,
442 const char *(*realm_cb) (struct cli_credentials *))
443 {
444 if (cred->realm_obtained < CRED_CALLBACK) {
445 cred->realm_cb = realm_cb;
446 cred->realm_obtained = CRED_CALLBACK;
447 return True;
448 }
449
450 return False;
451 }
452
453 /**
454 * Obtain the 'short' or 'NetBIOS' workstation name for this credentials context.
455 *
456 * @param cred credentials context
457 * @retval The workstation name set on this context.
458 * @note Return value will never be NULL except by programmer error.
459 */
cli_credentials_get_workstation(struct cli_credentials * cred)460 const char *cli_credentials_get_workstation(struct cli_credentials *cred)
461 {
462 if (cred->workstation_obtained == CRED_CALLBACK &&
463 !cred->callback_running) {
464 cred->callback_running = True;
465 cred->workstation = cred->workstation_cb(cred);
466 cred->callback_running = False;
467 cred->workstation_obtained = CRED_SPECIFIED;
468 }
469
470 return cred->workstation;
471 }
472
cli_credentials_set_workstation(struct cli_credentials * cred,const char * val,enum credentials_obtained obtained)473 BOOL cli_credentials_set_workstation(struct cli_credentials *cred,
474 const char *val,
475 enum credentials_obtained obtained)
476 {
477 if (obtained >= cred->workstation_obtained) {
478 cred->workstation = talloc_strdup(cred, val);
479 cred->workstation_obtained = obtained;
480 return True;
481 }
482
483 return False;
484 }
485
cli_credentials_set_workstation_callback(struct cli_credentials * cred,const char * (* workstation_cb)(struct cli_credentials *))486 BOOL cli_credentials_set_workstation_callback(struct cli_credentials *cred,
487 const char *(*workstation_cb) (struct cli_credentials *))
488 {
489 if (cred->workstation_obtained < CRED_CALLBACK) {
490 cred->workstation_cb = workstation_cb;
491 cred->workstation_obtained = CRED_CALLBACK;
492 return True;
493 }
494
495 return False;
496 }
497
498 /**
499 * Given a string, typically obtained from a -U argument, parse it into domain, username, realm and password fields
500 *
501 * The format accepted is [domain\\]user[%password] or user[@realm][%password]
502 *
503 * @param credentials Credentials structure on which to set the password
504 * @param data the string containing the username, password etc
505 * @param obtained This enum describes how 'specified' this password is
506 */
507
cli_credentials_parse_string(struct cli_credentials * credentials,const char * data,enum credentials_obtained obtained)508 void cli_credentials_parse_string(struct cli_credentials *credentials, const char *data, enum credentials_obtained obtained)
509 {
510 char *uname, *p;
511
512 if (strcmp("%",data) == 0) {
513 cli_credentials_set_anonymous(credentials);
514 return;
515 }
516
517 uname = talloc_strdup(credentials, data);
518 if ((p = strchr_m(uname,'%'))) {
519 *p = 0;
520 cli_credentials_set_password(credentials, p+1, obtained);
521 }
522
523 if ((p = strchr_m(uname,'@'))) {
524 cli_credentials_set_principal(credentials, uname, obtained);
525 *p = 0;
526 cli_credentials_set_realm(credentials, p+1, obtained);
527 return;
528 } else if ((p = strchr_m(uname,'\\')) || (p = strchr_m(uname, '/'))) {
529 *p = 0;
530 cli_credentials_set_domain(credentials, uname, obtained);
531 uname = p+1;
532 }
533 cli_credentials_set_username(credentials, uname, obtained);
534 }
535
536 /**
537 * Given a a credentials structure, print it as a string
538 *
539 * The format output is [domain\\]user[%password] or user[@realm][%password]
540 *
541 * @param credentials Credentials structure on which to set the password
542 * @param mem_ctx The memory context to place the result on
543 */
544
cli_credentials_get_unparsed_name(struct cli_credentials * credentials,TALLOC_CTX * mem_ctx)545 const char *cli_credentials_get_unparsed_name(struct cli_credentials *credentials, TALLOC_CTX *mem_ctx)
546 {
547 const char *bind_dn = cli_credentials_get_bind_dn(credentials);
548 const char *domain;
549 const char *username;
550 const char *name;
551
552 if (bind_dn) {
553 name = talloc_reference(mem_ctx, bind_dn);
554 } else {
555 cli_credentials_get_ntlm_username_domain(credentials, mem_ctx, &username, &domain);
556 if (domain && domain[0]) {
557 name = talloc_asprintf(mem_ctx, "%s\\%s",
558 domain, username);
559 } else {
560 name = talloc_asprintf(mem_ctx, "%s",
561 username);
562 }
563 }
564 return name;
565 }
566
567 /**
568 * Specifies default values for domain, workstation and realm
569 * from the smb.conf configuration file
570 *
571 * @param cred Credentials structure to fill in
572 */
cli_credentials_set_conf(struct cli_credentials * cred)573 void cli_credentials_set_conf(struct cli_credentials *cred)
574 {
575 cli_credentials_set_username(cred, "", CRED_UNINITIALISED);
576 cli_credentials_set_domain(cred, lp_workgroup(), CRED_UNINITIALISED);
577 cli_credentials_set_workstation(cred, lp_netbios_name(), CRED_UNINITIALISED);
578 cli_credentials_set_realm(cred, lp_realm(), CRED_UNINITIALISED);
579 }
580
581 /**
582 * Guess defaults for credentials from environment variables,
583 * and from the configuration file
584 *
585 * @param cred Credentials structure to fill in
586 */
cli_credentials_guess(struct cli_credentials * cred)587 void cli_credentials_guess(struct cli_credentials *cred)
588 {
589 char *p;
590
591 cli_credentials_set_conf(cred);
592
593 if (getenv("LOGNAME")) {
594 cli_credentials_set_username(cred, getenv("LOGNAME"), CRED_GUESS_ENV);
595 }
596
597 if (getenv("USER")) {
598 cli_credentials_parse_string(cred, getenv("USER"), CRED_GUESS_ENV);
599 if ((p = strchr_m(getenv("USER"),'%'))) {
600 memset(p,0,strlen(cred->password));
601 }
602 }
603
604 if (getenv("DOMAIN")) {
605 cli_credentials_set_domain(cred, getenv("DOMAIN"), CRED_GUESS_ENV);
606 }
607
608 if (getenv("PASSWD")) {
609 cli_credentials_set_password(cred, getenv("PASSWD"), CRED_GUESS_ENV);
610 }
611
612 if (getenv("PASSWD_FD")) {
613 cli_credentials_parse_password_fd(cred, atoi(getenv("PASSWD_FD")), CRED_GUESS_FILE);
614 }
615
616 if (getenv("PASSWD_FILE")) {
617 cli_credentials_parse_password_file(cred, getenv("PASSWD_FILE"), CRED_GUESS_FILE);
618 }
619
620 if (cli_credentials_get_kerberos_state(cred) != CRED_DONT_USE_KERBEROS) {
621 cli_credentials_set_ccache(cred, NULL, CRED_GUESS_FILE);
622 }
623 }
624
625 /**
626 * Attach NETLOGON credentials for use with SCHANNEL
627 */
628
cli_credentials_set_netlogon_creds(struct cli_credentials * cred,struct creds_CredentialState * netlogon_creds)629 void cli_credentials_set_netlogon_creds(struct cli_credentials *cred,
630 struct creds_CredentialState *netlogon_creds)
631 {
632 cred->netlogon_creds = talloc_reference(cred, netlogon_creds);
633 }
634
635 /**
636 * Return attached NETLOGON credentials
637 */
638
cli_credentials_get_netlogon_creds(struct cli_credentials * cred)639 struct creds_CredentialState *cli_credentials_get_netlogon_creds(struct cli_credentials *cred)
640 {
641 return cred->netlogon_creds;
642 }
643
644 /**
645 * Set NETLOGON secure channel type
646 */
647
cli_credentials_set_secure_channel_type(struct cli_credentials * cred,enum netr_SchannelType secure_channel_type)648 void cli_credentials_set_secure_channel_type(struct cli_credentials *cred,
649 enum netr_SchannelType secure_channel_type)
650 {
651 cred->secure_channel_type = secure_channel_type;
652 }
653
654 /**
655 * Return NETLOGON secure chanel type
656 */
657
cli_credentials_get_secure_channel_type(struct cli_credentials * cred)658 enum netr_SchannelType cli_credentials_get_secure_channel_type(struct cli_credentials *cred)
659 {
660 return cred->secure_channel_type;
661 }
662
663 /**
664 * Fill in a credentials structure as the anonymous user
665 */
cli_credentials_set_anonymous(struct cli_credentials * cred)666 void cli_credentials_set_anonymous(struct cli_credentials *cred)
667 {
668 cli_credentials_set_username(cred, "", CRED_SPECIFIED);
669 cli_credentials_set_domain(cred, "", CRED_SPECIFIED);
670 cli_credentials_set_password(cred, NULL, CRED_SPECIFIED);
671 }
672
673 /**
674 * Describe a credentials context as anonymous or authenticated
675 * @retval True if anonymous, False if a username is specified
676 */
677
cli_credentials_is_anonymous(struct cli_credentials * cred)678 BOOL cli_credentials_is_anonymous(struct cli_credentials *cred)
679 {
680 const char *username;
681
682 if (cred->machine_account_pending) {
683 cli_credentials_set_machine_account(cred);
684 }
685
686 username = cli_credentials_get_username(cred);
687
688 /* Yes, it is deliberate that we die if we have a NULL pointer
689 * here - anonymous is "", not NULL, which is 'never specified,
690 * never guessed', ie programmer bug */
691 if (!username[0]) {
692 return True;
693 }
694
695 return False;
696 }
697
698 /**
699 * Mark the current password for a credentials struct as wrong. This will
700 * cause the password to be prompted again (if a callback is set).
701 *
702 * This will decrement the number of times the password can be tried.
703 *
704 * @retval whether the credentials struct is finished
705 */
cli_credentials_wrong_password(struct cli_credentials * cred)706 BOOL cli_credentials_wrong_password(struct cli_credentials *cred)
707 {
708 if (cred->password_obtained != CRED_CALLBACK_RESULT) {
709 return False;
710 }
711
712 cred->password_obtained = CRED_CALLBACK;
713
714 cred->tries--;
715
716 return (cred->tries > 0);
717 }
718