2 Unix SMB/CIFS implementation.
4 User credentials handling
6 Copyright (C) Jelmer Vernooij 2005
7 Copyright (C) Tim Potter 2001
8 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
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 3 of the License, or
13 (at your option) any later version.
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.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include "librpc/gen_ndr/samr.h" /* for struct samrPassword */
26 #include "auth/credentials/credentials.h"
27 #include "auth/credentials/credentials_internal.h"
28 #include "auth/gensec/gensec.h"
29 #include "libcli/auth/libcli_auth.h"
31 #include "param/param.h"
32 #include "system/filesys.h"
35 * Create a new credentials structure
36 * @param mem_ctx TALLOC_CTX parent for credentials structure
38 _PUBLIC_ struct cli_credentials *cli_credentials_init(TALLOC_CTX *mem_ctx)
40 struct cli_credentials *cred = talloc_zero(mem_ctx, struct cli_credentials);
45 cred->winbind_separator = '\\';
50 _PUBLIC_ void cli_credentials_set_callback_data(struct cli_credentials *cred,
53 cred->priv_data = callback_data;
56 _PUBLIC_ void *_cli_credentials_callback_data(struct cli_credentials *cred)
58 return cred->priv_data;
62 * Create a new anonymous credential
63 * @param mem_ctx TALLOC_CTX parent for credentials structure
65 _PUBLIC_ struct cli_credentials *cli_credentials_init_anon(TALLOC_CTX *mem_ctx)
67 struct cli_credentials *anon_credentials;
69 anon_credentials = cli_credentials_init(mem_ctx);
70 cli_credentials_set_anonymous(anon_credentials);
72 return anon_credentials;
75 _PUBLIC_ void cli_credentials_set_kerberos_state(struct cli_credentials *creds,
76 enum credentials_use_kerberos use_kerberos)
78 creds->use_kerberos = use_kerberos;
81 _PUBLIC_ void cli_credentials_set_forced_sasl_mech(struct cli_credentials *creds,
82 const char *sasl_mech)
84 TALLOC_FREE(creds->forced_sasl_mech);
85 creds->forced_sasl_mech = talloc_strdup(creds, sasl_mech);
88 _PUBLIC_ void cli_credentials_set_krb_forwardable(struct cli_credentials *creds,
89 enum credentials_krb_forwardable krb_forwardable)
91 creds->krb_forwardable = krb_forwardable;
94 _PUBLIC_ enum credentials_use_kerberos cli_credentials_get_kerberos_state(struct cli_credentials *creds)
96 return creds->use_kerberos;
99 _PUBLIC_ const char *cli_credentials_get_forced_sasl_mech(struct cli_credentials *creds)
101 return creds->forced_sasl_mech;
104 _PUBLIC_ enum credentials_krb_forwardable cli_credentials_get_krb_forwardable(struct cli_credentials *creds)
106 return creds->krb_forwardable;
109 _PUBLIC_ void cli_credentials_set_gensec_features(struct cli_credentials *creds, uint32_t gensec_features)
111 creds->gensec_features = gensec_features;
114 _PUBLIC_ uint32_t cli_credentials_get_gensec_features(struct cli_credentials *creds)
116 return creds->gensec_features;
121 * Obtain the username for this credentials context.
122 * @param cred credentials context
123 * @retval The username set on this context.
124 * @note Return value will never be NULL except by programmer error.
126 _PUBLIC_ const char *cli_credentials_get_username(struct cli_credentials *cred)
128 if (cred->machine_account_pending) {
129 cli_credentials_set_machine_account(cred,
130 cred->machine_account_pending_lp_ctx);
133 if (cred->username_obtained == CRED_CALLBACK &&
134 !cred->callback_running) {
135 cred->callback_running = true;
136 cred->username = cred->username_cb(cred);
137 cred->callback_running = false;
138 if (cred->username_obtained == CRED_CALLBACK) {
139 cred->username_obtained = CRED_CALLBACK_RESULT;
140 cli_credentials_invalidate_ccache(cred, cred->username_obtained);
144 return cred->username;
147 _PUBLIC_ bool cli_credentials_set_username(struct cli_credentials *cred,
148 const char *val, enum credentials_obtained obtained)
150 if (obtained >= cred->username_obtained) {
151 cred->username = talloc_strdup(cred, val);
152 cred->username_obtained = obtained;
153 cli_credentials_invalidate_ccache(cred, cred->username_obtained);
160 _PUBLIC_ bool cli_credentials_set_username_callback(struct cli_credentials *cred,
161 const char *(*username_cb) (struct cli_credentials *))
163 if (cred->username_obtained < CRED_CALLBACK) {
164 cred->username_cb = username_cb;
165 cred->username_obtained = CRED_CALLBACK;
172 _PUBLIC_ bool cli_credentials_set_bind_dn(struct cli_credentials *cred,
175 cred->bind_dn = talloc_strdup(cred, bind_dn);
180 * Obtain the BIND DN for this credentials context.
181 * @param cred credentials context
182 * @retval The username set on this context.
183 * @note Return value will be NULL if not specified explictly
185 _PUBLIC_ const char *cli_credentials_get_bind_dn(struct cli_credentials *cred)
187 return cred->bind_dn;
192 * Obtain the client principal for this credentials context.
193 * @param cred credentials context
194 * @retval The username set on this context.
195 * @note Return value will never be NULL except by programmer error.
197 _PUBLIC_ char *cli_credentials_get_principal_and_obtained(struct cli_credentials *cred, TALLOC_CTX *mem_ctx, enum credentials_obtained *obtained)
199 const char *username = cli_credentials_get_username(cred);
202 if (cred->machine_account_pending) {
203 cli_credentials_set_machine_account(cred,
204 cred->machine_account_pending_lp_ctx);
207 if (cred->principal_obtained == CRED_CALLBACK &&
208 !cred->callback_running) {
209 cred->callback_running = true;
210 cred->principal = cred->principal_cb(cred);
211 cred->callback_running = false;
212 if (cred->principal_obtained == CRED_CALLBACK) {
213 cred->principal_obtained = CRED_CALLBACK_RESULT;
214 cli_credentials_invalidate_ccache(cred, cred->principal_obtained);
218 p = strchr_m(username, '@');
220 *obtained = cred->username_obtained;
221 return talloc_strdup(mem_ctx, username);
224 if (cred->principal_obtained < cred->username_obtained
225 || cred->principal_obtained < MAX(cred->domain_obtained, cred->realm_obtained)) {
226 const char *effective_username = NULL;
227 const char *effective_realm = NULL;
228 enum credentials_obtained effective_obtained;
230 effective_username = cli_credentials_get_username(cred);
231 if (effective_username == NULL || strlen(effective_username) == 0) {
232 *obtained = cred->username_obtained;
236 if (cred->domain_obtained > cred->realm_obtained) {
237 effective_realm = cli_credentials_get_domain(cred);
238 effective_obtained = MIN(cred->domain_obtained,
239 cred->username_obtained);
241 effective_realm = cli_credentials_get_realm(cred);
242 effective_obtained = MIN(cred->realm_obtained,
243 cred->username_obtained);
246 if (effective_realm == NULL || strlen(effective_realm) == 0) {
247 effective_realm = cli_credentials_get_domain(cred);
248 effective_obtained = MIN(cred->domain_obtained,
249 cred->username_obtained);
252 if (effective_realm != NULL && strlen(effective_realm) != 0) {
253 *obtained = effective_obtained;
254 return talloc_asprintf(mem_ctx, "%s@%s",
259 *obtained = cred->principal_obtained;
260 return talloc_strdup(mem_ctx, cred->principal);
264 * Obtain the client principal for this credentials context.
265 * @param cred credentials context
266 * @retval The username set on this context.
267 * @note Return value will never be NULL except by programmer error.
269 _PUBLIC_ char *cli_credentials_get_principal(struct cli_credentials *cred, TALLOC_CTX *mem_ctx)
271 enum credentials_obtained obtained;
272 return cli_credentials_get_principal_and_obtained(cred, mem_ctx, &obtained);
276 * @brief Set a new principal to the credential cache.
278 * @note When setting a new principal, you should make sure to reinit the cache
281 * @param[in] cred The credentials to set the principal on.
283 * @param[in] val The principal as a string to set.
285 * @param[in] obtained The way the principal has specified.
287 * @return true on success, false otherwise.
289 _PUBLIC_ bool cli_credentials_set_principal(struct cli_credentials *cred,
291 enum credentials_obtained obtained)
293 if (obtained >= cred->principal_obtained) {
294 cred->principal = talloc_strdup(cred, val);
295 if (cred->principal == NULL) {
298 cred->principal_obtained = obtained;
306 /* Set a callback to get the principal. This could be a popup dialog,
307 * a terminal prompt or similar. */
308 _PUBLIC_ bool cli_credentials_set_principal_callback(struct cli_credentials *cred,
309 const char *(*principal_cb) (struct cli_credentials *))
311 if (cred->principal_obtained < CRED_CALLBACK) {
312 cred->principal_cb = principal_cb;
313 cred->principal_obtained = CRED_CALLBACK;
320 /* Some of our tools are 'anonymous by default'. This is a single
321 * function to determine if authentication has been explicitly
324 _PUBLIC_ bool cli_credentials_authentication_requested(struct cli_credentials *cred)
326 uint32_t gensec_features = 0;
333 * If we forced the mech we clearly want authentication. E.g. to use
334 * SASL/EXTERNAL which has no credentials.
336 if (cred->forced_sasl_mech) {
340 if (cli_credentials_is_anonymous(cred)){
344 if (cred->principal_obtained >= CRED_SPECIFIED) {
347 if (cred->username_obtained >= CRED_SPECIFIED) {
351 if (cli_credentials_get_kerberos_state(cred) == CRED_MUST_USE_KERBEROS) {
355 gensec_features = cli_credentials_get_gensec_features(cred);
356 if (gensec_features & GENSEC_FEATURE_NTLM_CCACHE) {
360 if (gensec_features & GENSEC_FEATURE_SIGN) {
364 if (gensec_features & GENSEC_FEATURE_SEAL) {
372 * Obtain the password for this credentials context.
373 * @param cred credentials context
374 * @retval If set, the cleartext password, otherwise NULL
376 _PUBLIC_ const char *cli_credentials_get_password(struct cli_credentials *cred)
378 if (cred->machine_account_pending) {
379 cli_credentials_set_machine_account(cred,
380 cred->machine_account_pending_lp_ctx);
383 if (cred->password_obtained == CRED_CALLBACK &&
384 !cred->callback_running &&
385 !cred->password_will_be_nt_hash) {
386 cred->callback_running = true;
387 cred->password = cred->password_cb(cred);
388 cred->callback_running = false;
389 if (cred->password_obtained == CRED_CALLBACK) {
390 cred->password_obtained = CRED_CALLBACK_RESULT;
391 cli_credentials_invalidate_ccache(cred, cred->password_obtained);
395 return cred->password;
398 /* Set a password on the credentials context, including an indication
399 * of 'how' the password was obtained */
401 _PUBLIC_ bool cli_credentials_set_password(struct cli_credentials *cred,
403 enum credentials_obtained obtained)
405 if (obtained >= cred->password_obtained) {
407 cred->lm_response = data_blob_null;
408 cred->nt_response = data_blob_null;
409 cred->nt_hash = NULL;
410 cred->password = NULL;
412 cli_credentials_invalidate_ccache(cred, obtained);
414 cred->password_tries = 0;
417 cred->password_obtained = obtained;
421 if (cred->password_will_be_nt_hash) {
422 struct samr_Password *nt_hash = NULL;
423 size_t val_len = strlen(val);
426 nt_hash = talloc(cred, struct samr_Password);
427 if (nt_hash == NULL) {
431 converted = strhex_to_str((char *)nt_hash->hash,
432 sizeof(nt_hash->hash),
434 if (converted != sizeof(nt_hash->hash)) {
435 TALLOC_FREE(nt_hash);
439 cred->nt_hash = nt_hash;
440 cred->password_obtained = obtained;
444 cred->password = talloc_strdup(cred, val);
445 if (cred->password == NULL) {
449 /* Don't print the actual password in talloc memory dumps */
450 talloc_set_name_const(cred->password,
451 "password set via cli_credentials_set_password");
452 cred->password_obtained = obtained;
460 _PUBLIC_ bool cli_credentials_set_password_callback(struct cli_credentials *cred,
461 const char *(*password_cb) (struct cli_credentials *))
463 if (cred->password_obtained < CRED_CALLBACK) {
464 cred->password_tries = 3;
465 cred->password_cb = password_cb;
466 cred->password_obtained = CRED_CALLBACK;
467 cli_credentials_invalidate_ccache(cred, cred->password_obtained);
475 * Obtain the 'old' password for this credentials context (used for join accounts).
476 * @param cred credentials context
477 * @retval If set, the cleartext password, otherwise NULL
479 _PUBLIC_ const char *cli_credentials_get_old_password(struct cli_credentials *cred)
481 if (cred->machine_account_pending) {
482 cli_credentials_set_machine_account(cred,
483 cred->machine_account_pending_lp_ctx);
486 return cred->old_password;
489 _PUBLIC_ bool cli_credentials_set_old_password(struct cli_credentials *cred,
491 enum credentials_obtained obtained)
493 cred->old_password = talloc_strdup(cred, val);
494 if (cred->old_password) {
495 /* Don't print the actual password in talloc memory dumps */
496 talloc_set_name_const(cred->old_password, "password set via cli_credentials_set_old_password");
498 cred->old_nt_hash = NULL;
503 * Obtain the password, in the form MD4(unicode(password)) for this credentials context.
505 * Sometimes we only have this much of the password, while the rest of
506 * the time this call avoids calling E_md4hash themselves.
508 * @param cred credentials context
509 * @retval If set, the cleartext password, otherwise NULL
511 _PUBLIC_ struct samr_Password *cli_credentials_get_nt_hash(struct cli_credentials *cred,
514 enum credentials_obtained password_obtained;
515 enum credentials_obtained ccache_threshold;
516 enum credentials_obtained client_gss_creds_threshold;
517 bool password_is_nt_hash;
518 const char *password = NULL;
519 struct samr_Password *nt_hash = NULL;
521 if (cred->nt_hash != NULL) {
523 * If we already have a hash it's easy.
529 * This is a bit tricky, with password_will_be_nt_hash
530 * we still need to get the value via the password_callback
531 * but if we did that we should not remember it's state
532 * in the long run so we need to undo it.
535 password_obtained = cred->password_obtained;
536 ccache_threshold = cred->ccache_threshold;
537 client_gss_creds_threshold = cred->client_gss_creds_threshold;
538 password_is_nt_hash = cred->password_will_be_nt_hash;
540 cred->password_will_be_nt_hash = false;
541 password = cli_credentials_get_password(cred);
543 cred->password_will_be_nt_hash = password_is_nt_hash;
544 if (password_is_nt_hash && password_obtained == CRED_CALLBACK) {
546 * We got the nt_hash as string via the callback,
547 * so we need to undo the state change.
549 * And also don't remember it as plaintext password.
551 cred->client_gss_creds_threshold = client_gss_creds_threshold;
552 cred->ccache_threshold = ccache_threshold;
553 cred->password_obtained = password_obtained;
554 cred->password = NULL;
557 if (password == NULL) {
561 nt_hash = talloc(cred, struct samr_Password);
562 if (nt_hash == NULL) {
566 if (password_is_nt_hash) {
567 size_t password_len = strlen(password);
570 converted = strhex_to_str((char *)nt_hash->hash,
571 sizeof(nt_hash->hash),
572 password, password_len);
573 if (converted != sizeof(nt_hash->hash)) {
574 TALLOC_FREE(nt_hash);
578 E_md4hash(password, nt_hash->hash);
581 cred->nt_hash = nt_hash;
585 nt_hash = talloc(mem_ctx, struct samr_Password);
586 if (nt_hash == NULL) {
590 *nt_hash = *cred->nt_hash;
596 * Obtain the old password, in the form MD4(unicode(password)) for this credentials context.
598 * Sometimes we only have this much of the password, while the rest of
599 * the time this call avoids calling E_md4hash themselves.
601 * @param cred credentials context
602 * @retval If set, the cleartext password, otherwise NULL
604 _PUBLIC_ struct samr_Password *cli_credentials_get_old_nt_hash(struct cli_credentials *cred,
607 const char *old_password = NULL;
609 if (cred->old_nt_hash != NULL) {
610 struct samr_Password *nt_hash = talloc(mem_ctx, struct samr_Password);
615 *nt_hash = *cred->old_nt_hash;
620 old_password = cli_credentials_get_old_password(cred);
622 struct samr_Password *nt_hash = talloc(mem_ctx, struct samr_Password);
627 E_md4hash(old_password, nt_hash->hash);
636 * Obtain the 'short' or 'NetBIOS' domain for this credentials context.
637 * @param cred credentials context
638 * @retval The domain set on this context.
639 * @note Return value will never be NULL except by programmer error.
641 _PUBLIC_ const char *cli_credentials_get_domain(struct cli_credentials *cred)
643 if (cred->machine_account_pending) {
644 cli_credentials_set_machine_account(cred,
645 cred->machine_account_pending_lp_ctx);
648 if (cred->domain_obtained == CRED_CALLBACK &&
649 !cred->callback_running) {
650 cred->callback_running = true;
651 cred->domain = cred->domain_cb(cred);
652 cred->callback_running = false;
653 if (cred->domain_obtained == CRED_CALLBACK) {
654 cred->domain_obtained = CRED_CALLBACK_RESULT;
655 cli_credentials_invalidate_ccache(cred, cred->domain_obtained);
663 _PUBLIC_ bool cli_credentials_set_domain(struct cli_credentials *cred,
665 enum credentials_obtained obtained)
667 if (obtained >= cred->domain_obtained) {
668 /* it is important that the domain be in upper case,
669 * particularly for the sensitive NTLMv2
671 cred->domain = strupper_talloc(cred, val);
672 cred->domain_obtained = obtained;
673 /* setting domain does not mean we have to invalidate ccache
674 * because domain in not used for Kerberos operations.
675 * If ccache invalidation is required, one will anyway specify
676 * a password to kinit, and that will force invalidation of the ccache
684 bool cli_credentials_set_domain_callback(struct cli_credentials *cred,
685 const char *(*domain_cb) (struct cli_credentials *))
687 if (cred->domain_obtained < CRED_CALLBACK) {
688 cred->domain_cb = domain_cb;
689 cred->domain_obtained = CRED_CALLBACK;
697 * Obtain the Kerberos realm for this credentials context.
698 * @param cred credentials context
699 * @retval The realm set on this context.
700 * @note Return value will never be NULL except by programmer error.
702 _PUBLIC_ const char *cli_credentials_get_realm(struct cli_credentials *cred)
704 if (cred->machine_account_pending) {
705 cli_credentials_set_machine_account(cred,
706 cred->machine_account_pending_lp_ctx);
709 if (cred->realm_obtained == CRED_CALLBACK &&
710 !cred->callback_running) {
711 cred->callback_running = true;
712 cred->realm = cred->realm_cb(cred);
713 cred->callback_running = false;
714 if (cred->realm_obtained == CRED_CALLBACK) {
715 cred->realm_obtained = CRED_CALLBACK_RESULT;
716 cli_credentials_invalidate_ccache(cred, cred->realm_obtained);
724 * Set the realm for this credentials context, and force it to
725 * uppercase for the sanity of our local kerberos libraries
727 _PUBLIC_ bool cli_credentials_set_realm(struct cli_credentials *cred,
729 enum credentials_obtained obtained)
731 if (obtained >= cred->realm_obtained) {
732 cred->realm = strupper_talloc(cred, val);
733 cred->realm_obtained = obtained;
734 cli_credentials_invalidate_ccache(cred, cred->realm_obtained);
741 bool cli_credentials_set_realm_callback(struct cli_credentials *cred,
742 const char *(*realm_cb) (struct cli_credentials *))
744 if (cred->realm_obtained < CRED_CALLBACK) {
745 cred->realm_cb = realm_cb;
746 cred->realm_obtained = CRED_CALLBACK;
754 * Obtain the 'short' or 'NetBIOS' workstation name for this credentials context.
756 * @param cred credentials context
757 * @retval The workstation name set on this context.
758 * @note Return value will never be NULL except by programmer error.
760 _PUBLIC_ const char *cli_credentials_get_workstation(struct cli_credentials *cred)
762 if (cred->workstation_obtained == CRED_CALLBACK &&
763 !cred->callback_running) {
764 cred->callback_running = true;
765 cred->workstation = cred->workstation_cb(cred);
766 cred->callback_running = false;
767 if (cred->workstation_obtained == CRED_CALLBACK) {
768 cred->workstation_obtained = CRED_CALLBACK_RESULT;
772 return cred->workstation;
775 _PUBLIC_ bool cli_credentials_set_workstation(struct cli_credentials *cred,
777 enum credentials_obtained obtained)
779 if (obtained >= cred->workstation_obtained) {
780 cred->workstation = talloc_strdup(cred, val);
781 cred->workstation_obtained = obtained;
788 bool cli_credentials_set_workstation_callback(struct cli_credentials *cred,
789 const char *(*workstation_cb) (struct cli_credentials *))
791 if (cred->workstation_obtained < CRED_CALLBACK) {
792 cred->workstation_cb = workstation_cb;
793 cred->workstation_obtained = CRED_CALLBACK;
801 * Given a string, typically obtained from a -U argument, parse it into domain, username, realm and password fields
803 * The format accepted is [domain\\]user[%password] or user[@realm][%password]
805 * @param credentials Credentials structure on which to set the password
806 * @param data the string containing the username, password etc
807 * @param obtained This enum describes how 'specified' this password is
810 _PUBLIC_ void cli_credentials_parse_string(struct cli_credentials *credentials, const char *data, enum credentials_obtained obtained)
814 if (strcmp("%",data) == 0) {
815 cli_credentials_set_anonymous(credentials);
819 uname = talloc_strdup(credentials, data);
820 if ((p = strchr_m(uname,'%'))) {
822 cli_credentials_set_password(credentials, p+1, obtained);
825 if ((p = strchr_m(uname,'@'))) {
826 const char *realm = p + 1;
828 if (realm[0] == '\0') {
832 * We also need to set username and domain
833 * in order to undo the effect of
834 * cli_credentials_guess().
836 cli_credentials_set_username(credentials,
839 cli_credentials_set_domain(credentials, "", obtained);
841 cli_credentials_set_principal(credentials,
846 cli_credentials_set_realm(credentials, realm, obtained);
849 } else if ((p = strchr_m(uname,'\\'))
850 || (p = strchr_m(uname, '/'))
851 || (p = strchr_m(uname, credentials->winbind_separator)))
853 const char *domain = NULL;
859 if (obtained == credentials->realm_obtained &&
860 !strequal_m(credentials->domain, domain))
863 * We need to undo a former set with the same level
864 * in order to get the expected result from
865 * cli_credentials_get_principal().
867 * But we only need to do that if the domain
870 cli_credentials_set_realm(credentials, domain, obtained);
872 cli_credentials_set_domain(credentials, domain, obtained);
874 if (obtained == credentials->principal_obtained &&
875 !strequal_m(credentials->username, uname))
878 * We need to undo a former set with the same level
879 * in order to get the expected result from
880 * cli_credentials_get_principal().
882 * But we only need to do that if the username
885 credentials->principal_obtained = CRED_UNINITIALISED;
886 credentials->principal = NULL;
888 cli_credentials_set_username(credentials, uname, obtained);
892 * Given a a credentials structure, print it as a string
894 * The format output is [domain\\]user[%password] or user[@realm][%password]
896 * @param credentials Credentials structure on which to set the password
897 * @param mem_ctx The memory context to place the result on
900 _PUBLIC_ char *cli_credentials_get_unparsed_name(struct cli_credentials *credentials, TALLOC_CTX *mem_ctx)
902 const char *bind_dn = cli_credentials_get_bind_dn(credentials);
903 const char *domain = NULL;
904 const char *username = NULL;
908 name = talloc_strdup(mem_ctx, bind_dn);
910 cli_credentials_get_ntlm_username_domain(credentials, mem_ctx, &username, &domain);
911 if (domain && domain[0]) {
912 name = talloc_asprintf(mem_ctx, "%s\\%s",
915 name = talloc_asprintf(mem_ctx, "%s",
923 * Specifies default values for domain, workstation and realm
924 * from the smb.conf configuration file
926 * @param cred Credentials structure to fill in
928 _PUBLIC_ void cli_credentials_set_conf(struct cli_credentials *cred,
929 struct loadparm_context *lp_ctx)
931 const char *sep = NULL;
932 const char *realm = lpcfg_realm(lp_ctx);
934 cli_credentials_set_username(cred, "", CRED_UNINITIALISED);
935 if (lpcfg_parm_is_cmdline(lp_ctx, "workgroup")) {
936 cli_credentials_set_domain(cred, lpcfg_workgroup(lp_ctx), CRED_SPECIFIED);
938 cli_credentials_set_domain(cred, lpcfg_workgroup(lp_ctx), CRED_UNINITIALISED);
940 if (lpcfg_parm_is_cmdline(lp_ctx, "netbios name")) {
941 cli_credentials_set_workstation(cred, lpcfg_netbios_name(lp_ctx), CRED_SPECIFIED);
943 cli_credentials_set_workstation(cred, lpcfg_netbios_name(lp_ctx), CRED_UNINITIALISED);
945 if (realm != NULL && strlen(realm) == 0) {
948 if (lpcfg_parm_is_cmdline(lp_ctx, "realm")) {
949 cli_credentials_set_realm(cred, realm, CRED_SPECIFIED);
951 cli_credentials_set_realm(cred, realm, CRED_UNINITIALISED);
954 sep = lpcfg_winbind_separator(lp_ctx);
955 if (sep != NULL && sep[0] != '\0') {
956 cred->winbind_separator = *lpcfg_winbind_separator(lp_ctx);
961 * Guess defaults for credentials from environment variables,
962 * and from the configuration file
964 * @param cred Credentials structure to fill in
966 _PUBLIC_ void cli_credentials_guess(struct cli_credentials *cred,
967 struct loadparm_context *lp_ctx)
970 const char *error_string;
972 if (lp_ctx != NULL) {
973 cli_credentials_set_conf(cred, lp_ctx);
976 if (getenv("LOGNAME")) {
977 cli_credentials_set_username(cred, getenv("LOGNAME"), CRED_GUESS_ENV);
980 if (getenv("USER")) {
981 cli_credentials_parse_string(cred, getenv("USER"), CRED_GUESS_ENV);
982 if ((p = strchr_m(getenv("USER"),'%'))) {
983 memset(p,0,strlen(cred->password));
987 if (getenv("PASSWD")) {
988 cli_credentials_set_password(cred, getenv("PASSWD"), CRED_GUESS_ENV);
991 if (getenv("PASSWD_FD")) {
992 cli_credentials_parse_password_fd(cred, atoi(getenv("PASSWD_FD")),
996 p = getenv("PASSWD_FILE");
998 cli_credentials_parse_password_file(cred, p, CRED_GUESS_FILE);
1001 if (cli_credentials_get_kerberos_state(cred) != CRED_DONT_USE_KERBEROS) {
1002 cli_credentials_set_ccache(cred, lp_ctx, NULL, CRED_GUESS_FILE,
1008 * Attach NETLOGON credentials for use with SCHANNEL
1011 _PUBLIC_ void cli_credentials_set_netlogon_creds(
1012 struct cli_credentials *cred,
1013 const struct netlogon_creds_CredentialState *netlogon_creds)
1015 TALLOC_FREE(cred->netlogon_creds);
1016 if (netlogon_creds == NULL) {
1019 cred->netlogon_creds = netlogon_creds_copy(cred, netlogon_creds);
1023 * Return attached NETLOGON credentials
1026 _PUBLIC_ struct netlogon_creds_CredentialState *cli_credentials_get_netlogon_creds(struct cli_credentials *cred)
1028 return cred->netlogon_creds;
1032 * Set NETLOGON secure channel type
1035 _PUBLIC_ void cli_credentials_set_secure_channel_type(struct cli_credentials *cred,
1036 enum netr_SchannelType secure_channel_type)
1038 cred->secure_channel_type = secure_channel_type;
1042 * Return NETLOGON secure chanel type
1045 _PUBLIC_ time_t cli_credentials_get_password_last_changed_time(struct cli_credentials *cred)
1047 return cred->password_last_changed_time;
1051 * Set NETLOGON secure channel type
1054 _PUBLIC_ void cli_credentials_set_password_last_changed_time(struct cli_credentials *cred,
1055 time_t last_changed_time)
1057 cred->password_last_changed_time = last_changed_time;
1061 * Return NETLOGON secure chanel type
1064 _PUBLIC_ enum netr_SchannelType cli_credentials_get_secure_channel_type(struct cli_credentials *cred)
1066 return cred->secure_channel_type;
1070 * Fill in a credentials structure as the anonymous user
1072 _PUBLIC_ void cli_credentials_set_anonymous(struct cli_credentials *cred)
1074 cli_credentials_set_username(cred, "", CRED_SPECIFIED);
1075 cli_credentials_set_domain(cred, "", CRED_SPECIFIED);
1076 cli_credentials_set_password(cred, NULL, CRED_SPECIFIED);
1077 cli_credentials_set_principal(cred, NULL, CRED_SPECIFIED);
1078 cli_credentials_set_realm(cred, NULL, CRED_SPECIFIED);
1079 cli_credentials_set_workstation(cred, "", CRED_UNINITIALISED);
1080 cli_credentials_set_kerberos_state(cred, CRED_DONT_USE_KERBEROS);
1084 * Describe a credentials context as anonymous or authenticated
1085 * @retval true if anonymous, false if a username is specified
1088 _PUBLIC_ bool cli_credentials_is_anonymous(struct cli_credentials *cred)
1090 const char *username;
1092 /* if bind dn is set it's not anonymous */
1093 if (cred->bind_dn) {
1097 if (cred->machine_account_pending) {
1098 cli_credentials_set_machine_account(cred,
1099 cred->machine_account_pending_lp_ctx);
1102 /* if principal is set, it's not anonymous */
1103 if ((cred->principal != NULL) && cred->principal_obtained >= cred->username_obtained) {
1107 username = cli_credentials_get_username(cred);
1109 /* Yes, it is deliberate that we die if we have a NULL pointer
1110 * here - anonymous is "", not NULL, which is 'never specified,
1111 * never guessed', ie programmer bug */
1120 * Mark the current password for a credentials struct as wrong. This will
1121 * cause the password to be prompted again (if a callback is set).
1123 * This will decrement the number of times the password can be tried.
1125 * @retval whether the credentials struct is finished
1127 _PUBLIC_ bool cli_credentials_wrong_password(struct cli_credentials *cred)
1129 if (cred->password_obtained != CRED_CALLBACK_RESULT) {
1133 if (cred->password_tries == 0) {
1137 cred->password_tries--;
1139 if (cred->password_tries == 0) {
1143 cred->password_obtained = CRED_CALLBACK;
1147 _PUBLIC_ void cli_credentials_get_ntlm_username_domain(struct cli_credentials *cred, TALLOC_CTX *mem_ctx,
1148 const char **username,
1149 const char **domain)
1151 if (cred->principal_obtained > cred->username_obtained) {
1152 *domain = talloc_strdup(mem_ctx, "");
1153 *username = cli_credentials_get_principal(cred, mem_ctx);
1155 *domain = cli_credentials_get_domain(cred);
1156 *username = cli_credentials_get_username(cred);
1161 * Read a named file, and parse it for username, domain, realm and password
1163 * @param credentials Credentials structure on which to set the password
1164 * @param file a named file to read the details from
1165 * @param obtained This enum describes how 'specified' this password is
1168 _PUBLIC_ bool cli_credentials_parse_file(struct cli_credentials *cred, const char *file, enum credentials_obtained obtained)
1171 char *ptr, *val, *param;
1174 const char *realm = NULL;
1175 const char *domain = NULL;
1176 const char *password = NULL;
1177 const char *username = NULL;
1179 lines = file_lines_load(file, &numlines, 0, NULL);
1183 /* fail if we can't open the credentials file */
1184 d_printf("ERROR: Unable to open credentials file!\n");
1188 for (i = 0; i < numlines; i++) {
1189 len = strlen(lines[i]);
1194 /* break up the line into parameter & value.
1195 * will need to eat a little whitespace possibly */
1197 if (!(ptr = strchr_m (lines[i], '=')))
1203 /* eat leading white space */
1204 while ((*val!='\0') && ((*val==' ') || (*val=='\t')))
1207 if (strwicmp("password", param) == 0) {
1209 } else if (strwicmp("username", param) == 0) {
1211 } else if (strwicmp("domain", param) == 0) {
1213 } else if (strwicmp("realm", param) == 0) {
1218 * We need to readd '=' in order to let
1219 * the strlen() work in the last loop
1220 * that clears the memory.
1225 if (realm != NULL && strlen(realm) != 0) {
1227 * only overwrite with a valid string
1229 cli_credentials_set_realm(cred, realm, obtained);
1232 if (domain != NULL && strlen(domain) != 0) {
1234 * only overwrite with a valid string
1236 cli_credentials_set_domain(cred, domain, obtained);
1239 if (password != NULL) {
1243 cli_credentials_set_password(cred, password, obtained);
1246 if (username != NULL) {
1248 * The last "username" line takes preference
1249 * if the string also contains domain, realm or
1252 cli_credentials_parse_string(cred, username, obtained);
1255 for (i = 0; i < numlines; i++) {
1256 len = strlen(lines[i]);
1257 memset(lines[i], 0, len);
1265 * Read a named file, and parse it for a password
1267 * @param credentials Credentials structure on which to set the password
1268 * @param file a named file to read the password from
1269 * @param obtained This enum describes how 'specified' this password is
1272 _PUBLIC_ bool cli_credentials_parse_password_file(struct cli_credentials *credentials, const char *file, enum credentials_obtained obtained)
1274 int fd = open(file, O_RDONLY, 0);
1278 fprintf(stderr, "Error opening password file %s: %s\n",
1279 file, strerror(errno));
1283 ret = cli_credentials_parse_password_fd(credentials, fd, obtained);
1292 * Read a file descriptor, and parse it for a password (eg from a file or stdin)
1294 * @param credentials Credentials structure on which to set the password
1295 * @param fd open file descriptor to read the password from
1296 * @param obtained This enum describes how 'specified' this password is
1299 _PUBLIC_ bool cli_credentials_parse_password_fd(struct cli_credentials *credentials,
1300 int fd, enum credentials_obtained obtained)
1305 for(p = pass, *p = '\0'; /* ensure that pass is null-terminated */
1306 p && p - pass < sizeof(pass);) {
1307 switch (read(fd, p, 1)) {
1309 if (*p != '\n' && *p != '\0') {
1310 *++p = '\0'; /* advance p, and null-terminate pass */
1317 *p = '\0'; /* null-terminate it, just in case... */
1318 p = NULL; /* then force the loop condition to become false */
1323 "Error reading password from file descriptor "
1324 "%d: empty password\n",
1329 fprintf(stderr, "Error reading password from file descriptor %d: %s\n",
1330 fd, strerror(errno));
1335 cli_credentials_set_password(credentials, pass, obtained);
1341 * Encrypt a data blob using the session key and the negotiated encryption
1344 * @param state Credential state, contains the session key and algorithm
1345 * @param data Data blob containing the data to be encrypted.
1348 _PUBLIC_ NTSTATUS netlogon_creds_session_encrypt(
1349 struct netlogon_creds_CredentialState *state,
1352 if (data.data == NULL || data.length == 0) {
1353 DBG_ERR("Nothing to encrypt "
1354 "data.data == NULL or data.length == 0");
1355 return NT_STATUS_INVALID_PARAMETER;
1358 * Don't crypt an all-zero password it will give away the
1359 * NETLOGON pipe session key .
1361 if (all_zero(data.data, data.length)) {
1362 DBG_ERR("Supplied data all zeros, could leak session key");
1363 return NT_STATUS_INVALID_PARAMETER;
1365 if (state->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
1366 netlogon_creds_aes_encrypt(state,
1369 } else if (state->negotiate_flags & NETLOGON_NEG_ARCFOUR) {
1370 netlogon_creds_arcfour_crypt(state,
1374 DBG_ERR("Unsupported encryption option negotiated");
1375 return NT_STATUS_NOT_SUPPORTED;
1377 return NT_STATUS_OK;