2 Unix SMB/CIFS implementation.
3 simple kerberos5 routines for active directory
4 Copyright (C) Andrew Tridgell 2001
5 Copyright (C) Luke Howard 2002-2003
6 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
7 Copyright (C) Guenther Deschner 2005-2009
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 #include "system/filesys.h"
25 #include "krb5_samba.h"
26 #include "lib/crypto/crypto.h"
30 #endif /* HAVE_COM_ERR_H */
32 #ifndef KRB5_AUTHDATA_WIN2K_PAC
33 #define KRB5_AUTHDATA_WIN2K_PAC 128
36 #ifndef KRB5_AUTHDATA_IF_RELEVANT
37 #define KRB5_AUTHDATA_IF_RELEVANT 1
42 #define GSSAPI_CHECKSUM 0x8003 /* Checksum type value for Kerberos */
43 #define GSSAPI_BNDLENGTH 16 /* Bind Length (rfc-1964 pg.3) */
44 #define GSSAPI_CHECKSUM_SIZE (4+GSSAPI_BNDLENGTH+4) /* Length of bind length,
45 bind field, flags field. */
46 #define GSS_C_DELEG_FLAG 1
48 /* MIT krb5 1.7beta3 (in Ubuntu Karmic) is missing the prototype,
49 but still has the symbol */
50 #if !HAVE_DECL_KRB5_AUTH_CON_SET_REQ_CKSUMTYPE
51 krb5_error_code
krb5_auth_con_set_req_cksumtype(
53 krb5_auth_context auth_context
,
54 krb5_cksumtype cksumtype
);
57 #if !defined(SMB_MALLOC)
59 #define SMB_MALLOC(s) malloc((s))
63 #define SMB_STRDUP(s) strdup(s)
66 /**********************************************************
68 **********************************************************/
70 #if !defined(HAVE_KRB5_SET_DEFAULT_TGS_KTYPES)
72 #if defined(HAVE_KRB5_SET_DEFAULT_TGS_ENCTYPES)
74 /* With MIT kerberos, we should use krb5_set_default_tgs_enctypes in preference
75 * to krb5_set_default_tgs_ktypes. See
76 * http://lists.samba.org/archive/samba-technical/2006-July/048271.html
78 * If the MIT libraries are not exporting internal symbols, we will end up in
79 * this branch, which is correct. Otherwise we will continue to use the
82 krb5_error_code
krb5_set_default_tgs_ktypes(krb5_context ctx
, const krb5_enctype
*enc
)
84 return krb5_set_default_tgs_enctypes(ctx
, enc
);
87 #elif defined(HAVE_KRB5_SET_DEFAULT_IN_TKT_ETYPES)
90 krb5_error_code
krb5_set_default_tgs_ktypes(krb5_context ctx
, const krb5_enctype
*enc
)
92 return krb5_set_default_in_tkt_etypes(ctx
, enc
);
95 #endif /* HAVE_KRB5_SET_DEFAULT_TGS_ENCTYPES */
97 #endif /* HAVE_KRB5_SET_DEFAULT_TGS_KTYPES */
100 #if defined(HAVE_KRB5_AUTH_CON_SETKEY) && !defined(HAVE_KRB5_AUTH_CON_SETUSERUSERKEY)
101 krb5_error_code
krb5_auth_con_setuseruserkey(krb5_context context
,
102 krb5_auth_context auth_context
,
103 krb5_keyblock
*keyblock
)
105 return krb5_auth_con_setkey(context
, auth_context
, keyblock
);
109 #if !defined(HAVE_KRB5_FREE_UNPARSED_NAME)
110 void krb5_free_unparsed_name(krb5_context context
, char *val
)
116 #if defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING) && !defined(HAVE_KRB5_PRINC_COMPONENT)
117 const krb5_data
*krb5_princ_component(krb5_context context
,
118 krb5_principal principal
, int i
);
120 const krb5_data
*krb5_princ_component(krb5_context context
,
121 krb5_principal principal
, int i
)
123 static krb5_data kdata
;
125 kdata
.data
= discard_const_p(char, krb5_principal_get_comp_string(context
, principal
, i
));
126 kdata
.length
= strlen((const char *)kdata
.data
);
132 /**********************************************************
134 **********************************************************/
136 #if defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS)
140 * @brief Stores the address of a 'struct sockaddr_storage' a krb5_address
142 * @param[in] paddr A pointer to a 'struct sockaddr_storage to extract the
145 * @param[out] pkaddr A Kerberos address to store tha address in.
147 * @return True on success, false if an error occurred.
149 bool smb_krb5_sockaddr_to_kaddr(struct sockaddr_storage
*paddr
,
150 krb5_address
*pkaddr
)
152 memset(pkaddr
, '\0', sizeof(krb5_address
));
154 if (paddr
->ss_family
== AF_INET6
) {
155 pkaddr
->addr_type
= KRB5_ADDRESS_INET6
;
156 pkaddr
->address
.length
= sizeof(((struct sockaddr_in6
*)paddr
)->sin6_addr
);
157 pkaddr
->address
.data
= (char *)&(((struct sockaddr_in6
*)paddr
)->sin6_addr
);
161 if (paddr
->ss_family
== AF_INET
) {
162 pkaddr
->addr_type
= KRB5_ADDRESS_INET
;
163 pkaddr
->address
.length
= sizeof(((struct sockaddr_in
*)paddr
)->sin_addr
);
164 pkaddr
->address
.data
= (char *)&(((struct sockaddr_in
*)paddr
)->sin_addr
);
169 #elif defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS)
173 * @brief Stores the address of a 'struct sockaddr_storage' a krb5_address
175 * @param[in] paddr A pointer to a 'struct sockaddr_storage to extract the
178 * @param[in] pkaddr A Kerberos address to store tha address in.
180 * @return True on success, false if an error occurred.
182 bool smb_krb5_sockaddr_to_kaddr(struct sockaddr_storage
*paddr
,
183 krb5_address
*pkaddr
)
185 memset(pkaddr
, '\0', sizeof(krb5_address
));
187 if (paddr
->ss_family
== AF_INET6
) {
188 pkaddr
->addrtype
= ADDRTYPE_INET6
;
189 pkaddr
->length
= sizeof(((struct sockaddr_in6
*)paddr
)->sin6_addr
);
190 pkaddr
->contents
= (krb5_octet
*)&(((struct sockaddr_in6
*)paddr
)->sin6_addr
);
194 if (paddr
->ss_family
== AF_INET
) {
195 pkaddr
->addrtype
= ADDRTYPE_INET
;
196 pkaddr
->length
= sizeof(((struct sockaddr_in
*)paddr
)->sin_addr
);
197 pkaddr
->contents
= (krb5_octet
*)&(((struct sockaddr_in
*)paddr
)->sin_addr
);
203 #error UNKNOWN_ADDRTYPE
206 krb5_error_code
smb_krb5_mk_error(krb5_context context
,
207 krb5_error_code error_code
,
210 const krb5_principal client
,
211 const krb5_principal server
,
214 krb5_error_code code
= EINVAL
;
215 #ifdef SAMBA4_USES_HEIMDAL
216 code
= krb5_mk_error(context
,
222 NULL
, /* client_time */
223 NULL
, /* client_usec */
226 krb5_principal unspec_server
= NULL
;
232 code
= krb5_us_timeofday(context
,
239 errpkt
.error
= error_code
;
241 errpkt
.text
.length
= 0;
242 if (e_text
!= NULL
) {
243 errpkt
.text
.length
= strlen(e_text
);
244 errpkt
.text
.data
= discard_const_p(char, e_text
);
247 errpkt
.e_data
.magic
= KV5M_DATA
;
248 errpkt
.e_data
.length
= 0;
249 errpkt
.e_data
.data
= NULL
;
250 if (e_data
!= NULL
) {
251 errpkt
.e_data
= *e_data
;
254 errpkt
.client
= client
;
256 if (server
!= NULL
) {
257 errpkt
.server
= server
;
259 code
= smb_krb5_make_principal(context
,
261 "<unspecified realm>",
266 errpkt
.server
= unspec_server
;
269 code
= krb5_mk_error(context
,
272 krb5_free_principal(context
, unspec_server
);
278 * @brief Create a keyblock based on input parameters
280 * @param context The krb5_context
281 * @param host_princ The krb5_principal to use
282 * @param salt The optional salt, if omitted, salt is calculated with
283 * the provided principal.
284 * @param password The krb5_data containing the password
285 * @param enctype The krb5_enctype to use for the keyblock generation
286 * @param key The returned krb5_keyblock, caller needs to free with
287 * krb5_free_keyblock().
289 * @return krb5_error_code
291 int smb_krb5_create_key_from_string(krb5_context context
,
292 krb5_const_principal host_princ
,
295 krb5_enctype enctype
,
300 if (host_princ
== NULL
&& salt
== NULL
) {
304 if ((int)enctype
== (int)ENCTYPE_ARCFOUR_HMAC
) {
305 TALLOC_CTX
*frame
= talloc_stackframe();
306 uint8_t *utf16
= NULL
;
307 size_t utf16_size
= 0;
311 ok
= convert_string_talloc(frame
, CH_UNIX
, CH_UTF16LE
,
312 password
->data
, password
->length
,
313 (void **)&utf16
, &utf16_size
);
323 mdfour(nt_hash
, utf16
, utf16_size
);
324 memset(utf16
, 0, utf16_size
);
325 ret
= smb_krb5_keyblock_init_contents(context
,
326 ENCTYPE_ARCFOUR_HMAC
,
330 ZERO_STRUCT(nt_hash
);
340 #if defined(HAVE_KRB5_PRINCIPAL2SALT) && defined(HAVE_KRB5_C_STRING_TO_KEY)
345 ret
= krb5_principal2salt(context
, host_princ
, &_salt
);
347 DEBUG(1,("krb5_principal2salt failed (%s)\n", error_message(ret
)));
353 ret
= krb5_c_string_to_key(context
, enctype
, password
, &_salt
, key
);
355 SAFE_FREE(_salt
.data
);
358 #elif defined(HAVE_KRB5_GET_PW_SALT) && defined(HAVE_KRB5_STRING_TO_KEY_SALT)
363 ret
= krb5_get_pw_salt(context
, host_princ
, &_salt
);
365 DEBUG(1,("krb5_get_pw_salt failed (%s)\n", error_message(ret
)));
369 _salt
.saltvalue
= *salt
;
370 _salt
.salttype
= KRB5_PW_SALT
;
373 ret
= krb5_string_to_key_salt(context
, enctype
, (const char *)password
->data
, _salt
, key
);
375 krb5_free_salt(context
, _salt
);
379 #error UNKNOWN_CREATE_KEY_FUNCTIONS
385 * @brief Create a salt for a given principal
387 * @param context The initialized krb5_context
388 * @param host_princ The krb5_principal to create the salt for
389 * @param psalt A pointer to a krb5_data struct
391 * caller has to free the contents of psalt with smb_krb5_free_data_contents
392 * when function has succeeded
394 * @return krb5_error_code, returns 0 on success, error code otherwise
397 int smb_krb5_get_pw_salt(krb5_context context
,
398 krb5_const_principal host_princ
,
400 #if defined(HAVE_KRB5_GET_PW_SALT)
406 ret
= krb5_get_pw_salt(context
, host_princ
, &salt
);
411 psalt
->data
= salt
.saltvalue
.data
;
412 psalt
->length
= salt
.saltvalue
.length
;
416 #elif defined(HAVE_KRB5_PRINCIPAL2SALT)
419 return krb5_principal2salt(context
, host_princ
, psalt
);
422 #error UNKNOWN_SALT_FUNCTIONS
426 * @brief This constructs the salt principal used by active directory
428 * Most Kerberos encryption types require a salt in order to
429 * calculate the long term private key for user/computer object
430 * based on a password.
432 * The returned _salt_principal is a string in forms like this:
433 * - host/somehost.example.com@EXAMPLE.COM
434 * - SomeAccount@EXAMPLE.COM
435 * - SomePrincipal@EXAMPLE.COM
437 * This is not the form that's used as salt, it's just
438 * the human readable form. It needs to be converted by
439 * smb_krb5_salt_principal2data().
441 * @param[in] realm The realm the user/computer is added too.
443 * @param[in] sAMAccountName The sAMAccountName attribute of the object.
445 * @param[in] userPrincipalName The userPrincipalName attribute of the object
446 * or NULL is not available.
448 * @param[in] is_computer The indication of the object includes
449 * objectClass=computer.
451 * @param[in] mem_ctx The TALLOC_CTX to allocate _salt_principal.
453 * @param[out] _salt_principal The resulting principal as string.
455 * @retval 0 Success; otherwise - Kerberos error codes
457 * @see smb_krb5_salt_principal2data
459 int smb_krb5_salt_principal(const char *realm
,
460 const char *sAMAccountName
,
461 const char *userPrincipalName
,
464 char **_salt_principal
)
466 TALLOC_CTX
*frame
= talloc_stackframe();
467 char *upper_realm
= NULL
;
468 const char *principal
= NULL
;
469 int principal_len
= 0;
471 *_salt_principal
= NULL
;
473 if (sAMAccountName
== NULL
) {
483 upper_realm
= strupper_talloc(frame
, realm
);
484 if (upper_realm
== NULL
) {
489 /* Many, many thanks to lukeh@padl.com for this
490 * algorithm, described in his Nov 10 2004 mail to
491 * samba-technical@lists.samba.org */
494 * Determine a salting principal
497 int computer_len
= 0;
500 computer_len
= strlen(sAMAccountName
);
501 if (sAMAccountName
[computer_len
-1] == '$') {
505 tmp
= talloc_asprintf(frame
, "host/%*.*s.%s",
506 computer_len
, computer_len
,
507 sAMAccountName
, realm
);
513 principal
= strlower_talloc(frame
, tmp
);
515 if (principal
== NULL
) {
519 principal_len
= strlen(principal
);
521 } else if (userPrincipalName
!= NULL
) {
524 principal
= userPrincipalName
;
525 p
= strchr(principal
, '@');
527 principal_len
= PTR_DIFF(p
, principal
);
529 principal_len
= strlen(principal
);
532 principal
= sAMAccountName
;
533 principal_len
= strlen(principal
);
536 *_salt_principal
= talloc_asprintf(mem_ctx
, "%*.*s@%s",
537 principal_len
, principal_len
,
538 principal
, upper_realm
);
539 if (*_salt_principal
== NULL
) {
549 * @brief Converts the salt principal string into the salt data blob
551 * This function takes a salt_principal as string in forms like this:
552 * - host/somehost.example.com@EXAMPLE.COM
553 * - SomeAccount@EXAMPLE.COM
554 * - SomePrincipal@EXAMPLE.COM
556 * It generates values like:
557 * - EXAMPLE.COMhost/somehost.example.com
558 * - EXAMPLE.COMSomeAccount
559 * - EXAMPLE.COMSomePrincipal
561 * @param[in] realm The realm the user/computer is added too.
563 * @param[in] sAMAccountName The sAMAccountName attribute of the object.
565 * @param[in] userPrincipalName The userPrincipalName attribute of the object
566 * or NULL is not available.
568 * @param[in] is_computer The indication of the object includes
569 * objectClass=computer.
571 * @param[in] mem_ctx The TALLOC_CTX to allocate _salt_principal.
573 * @param[out] _salt_principal The resulting principal as string.
575 * @retval 0 Success; otherwise - Kerberos error codes
577 * @see smb_krb5_salt_principal
579 int smb_krb5_salt_principal2data(krb5_context context
,
580 const char *salt_principal
,
585 krb5_principal salt_princ
= NULL
;
590 ret
= krb5_parse_name(context
, salt_principal
, &salt_princ
);
595 ret
= smb_krb5_get_pw_salt(context
, salt_princ
, &salt
);
596 krb5_free_principal(context
, salt_princ
);
601 *_salt_data
= talloc_strndup(mem_ctx
,
604 smb_krb5_free_data_contents(context
, &salt
);
605 if (*_salt_data
== NULL
) {
612 #if defined(HAVE_KRB5_GET_PERMITTED_ENCTYPES)
614 * @brief Get a list of encryption types allowed for session keys
616 * @param[in] context The library context
618 * @param[in] enctypes An allocated, zero-terminated list of encryption types
620 * This function returns an allocated list of encryption types allowed for
623 * Use free() to free the enctypes when it is no longer needed.
625 * @retval 0 Success; otherwise - Kerberos error codes
627 krb5_error_code
smb_krb5_get_allowed_etypes(krb5_context context
,
628 krb5_enctype
**enctypes
)
630 return krb5_get_permitted_enctypes(context
, enctypes
);
632 #elif defined(HAVE_KRB5_GET_DEFAULT_IN_TKT_ETYPES)
633 krb5_error_code
smb_krb5_get_allowed_etypes(krb5_context context
,
634 krb5_enctype
**enctypes
)
636 #ifdef HAVE_KRB5_PDU_NONE_DECL
637 return krb5_get_default_in_tkt_etypes(context
, KRB5_PDU_NONE
, enctypes
);
639 return krb5_get_default_in_tkt_etypes(context
, enctypes
);
643 #error UNKNOWN_GET_ENCTYPES_FUNCTIONS
648 * @brief Convert a string principal name to a Kerberos principal.
650 * @param[in] context The library context
652 * @param[in] name The principal as a unix charset string.
654 * @param[out] principal The newly allocated principal.
656 * Use krb5_free_principal() to free a principal when it is no longer needed.
658 * @return 0 on success, a Kerberos error code otherwise.
660 krb5_error_code
smb_krb5_parse_name(krb5_context context
,
662 krb5_principal
*principal
)
666 size_t converted_size
;
667 TALLOC_CTX
*frame
= talloc_stackframe();
669 if (!push_utf8_talloc(frame
, &utf8_name
, name
, &converted_size
)) {
674 ret
= krb5_parse_name(context
, utf8_name
, principal
);
680 * @brief Convert a Kerberos principal structure to a string representation.
682 * The resulting string representation will be a unix charset name and is
685 * @param[in] mem_ctx The talloc context to allocate memory on.
687 * @param[in] context The library context.
689 * @param[in] principal The principal.
691 * @param[out] unix_name A string representation of the princpial name as with
694 * Use talloc_free() to free the string representation if it is no longer
697 * @return 0 on success, a Kerberos error code otherwise.
699 krb5_error_code
smb_krb5_unparse_name(TALLOC_CTX
*mem_ctx
,
700 krb5_context context
,
701 krb5_const_principal principal
,
706 size_t converted_size
;
709 ret
= krb5_unparse_name(context
, principal
, &utf8_name
);
714 if (!pull_utf8_talloc(mem_ctx
, unix_name
, utf8_name
, &converted_size
)) {
715 krb5_free_unparsed_name(context
, utf8_name
);
718 krb5_free_unparsed_name(context
, utf8_name
);
723 * @brief Free the contents of a krb5_data structure and zero the data field.
725 * @param[in] context The krb5 context
727 * @param[in] pdata The data structure to free contents of
729 * This function frees the contents, not the structure itself.
731 void smb_krb5_free_data_contents(krb5_context context
, krb5_data
*pdata
)
733 #if defined(HAVE_KRB5_FREE_DATA_CONTENTS)
735 krb5_free_data_contents(context
, pdata
);
737 #elif defined(HAVE_KRB5_DATA_FREE)
738 krb5_data_free(context
, pdata
);
740 SAFE_FREE(pdata
->data
);
745 * @brief copy a buffer into a krb5_data struct
747 * @param[in] p The krb5_data
748 * @param[in] data The data to copy
749 * @param[in] length The length of the data to copy
750 * @return krb5_error_code
752 * Caller has to free krb5_data with smb_krb5_free_data_contents().
754 krb5_error_code
smb_krb5_copy_data_contents(krb5_data
*p
,
758 #if defined(HAVE_KRB5_DATA_COPY)
759 return krb5_data_copy(p
, data
, len
);
762 p
->data
= malloc(len
);
763 if (p
->data
== NULL
) {
766 memmove(p
->data
, data
, len
);
771 p
->magic
= KV5M_DATA
;
776 bool smb_krb5_get_smb_session_key(TALLOC_CTX
*mem_ctx
,
777 krb5_context context
,
778 krb5_auth_context auth_context
,
779 DATA_BLOB
*session_key
,
782 krb5_keyblock
*skey
= NULL
;
783 krb5_error_code err
= 0;
787 #ifdef HAVE_KRB5_AUTH_CON_GETRECVSUBKEY
788 err
= krb5_auth_con_getrecvsubkey(context
,
791 #else /* HAVE_KRB5_AUTH_CON_GETRECVSUBKEY */
792 err
= krb5_auth_con_getremotesubkey(context
,
793 auth_context
, &skey
);
794 #endif /* HAVE_KRB5_AUTH_CON_GETRECVSUBKEY */
796 #ifdef HAVE_KRB5_AUTH_CON_GETSENDSUBKEY
797 err
= krb5_auth_con_getsendsubkey(context
,
800 #else /* HAVE_KRB5_AUTH_CON_GETSENDSUBKEY */
801 err
= krb5_auth_con_getlocalsubkey(context
,
802 auth_context
, &skey
);
803 #endif /* HAVE_KRB5_AUTH_CON_GETSENDSUBKEY */
806 if (err
|| skey
== NULL
) {
807 DEBUG(10, ("KRB5 error getting session key %d\n", err
));
811 DEBUG(10, ("Got KRB5 session key of length %d\n",
812 (int)KRB5_KEY_LENGTH(skey
)));
814 *session_key
= data_blob_talloc(mem_ctx
,
816 KRB5_KEY_LENGTH(skey
));
817 dump_data_pw("KRB5 Session Key:\n",
819 session_key
->length
);
825 krb5_free_keyblock(context
, skey
);
833 * @brief Get talloced string component of a principal
835 * @param[in] mem_ctx The TALLOC_CTX
836 * @param[in] context The krb5_context
837 * @param[in] principal The principal
838 * @param[in] component The component
839 * @return string component
841 * Caller must talloc_free if the return value is not NULL.
844 char *smb_krb5_principal_get_comp_string(TALLOC_CTX
*mem_ctx
,
845 krb5_context context
,
846 krb5_const_principal principal
,
847 unsigned int component
)
849 #if defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING)
850 return talloc_strdup(mem_ctx
, krb5_principal_get_comp_string(context
, principal
, component
));
854 if (component
>= krb5_princ_size(context
, principal
)) {
858 data
= krb5_princ_component(context
, principal
, component
);
863 return talloc_strndup(mem_ctx
, data
->data
, data
->length
);
870 * @param[in] ccache_string A string pointing to the cache to renew the ticket
871 * (e.g. FILE:/tmp/krb5cc_0) or NULL. If the principal
872 * ccache has not been specified, the default ccache
875 * @param[in] client_string The client principal string (e.g. user@SAMBA.SITE)
876 * or NULL. If the principal string has not been
877 * specified, the principal from the ccache will be
880 * @param[in] service_string The service ticket string
881 * (e.g. krbtgt/SAMBA.SITE@SAMBA.SITE) or NULL. If
882 * the sevice ticket is specified, it is parsed (
883 * with the realm part ignored) and used as the
884 * server principal of the credential. Otherwise
885 * the ticket-granting service is used.
887 * @param[in] expire_time A pointer to store the credentials end time or
890 * @return 0 on Succes, a Kerberos error code otherwise.
892 krb5_error_code
smb_krb5_renew_ticket(const char *ccache_string
,
893 const char *client_string
,
894 const char *service_string
,
898 krb5_context context
= NULL
;
899 krb5_ccache ccache
= NULL
;
900 krb5_principal client
= NULL
;
901 krb5_creds creds
, creds_in
;
904 ZERO_STRUCT(creds_in
);
906 initialize_krb5_error_table();
907 ret
= krb5_init_context(&context
);
912 if (!ccache_string
) {
913 ccache_string
= krb5_cc_default_name(context
);
916 if (!ccache_string
) {
921 DEBUG(10,("smb_krb5_renew_ticket: using %s as ccache\n", ccache_string
));
923 /* FIXME: we should not fall back to defaults */
924 ret
= krb5_cc_resolve(context
, discard_const_p(char, ccache_string
), &ccache
);
930 ret
= smb_krb5_parse_name(context
, client_string
, &client
);
935 ret
= krb5_cc_get_principal(context
, ccache
, &client
);
941 ret
= krb5_get_renewed_creds(context
, &creds
, client
, ccache
, discard_const_p(char, service_string
));
943 DEBUG(10,("smb_krb5_renew_ticket: krb5_get_kdc_cred failed: %s\n", error_message(ret
)));
947 /* hm, doesn't that create a new one if the old one wasn't there? - Guenther */
948 ret
= krb5_cc_initialize(context
, ccache
, client
);
953 ret
= krb5_cc_store_cred(context
, ccache
, &creds
);
956 *expire_time
= (time_t) creds
.times
.endtime
;
960 krb5_free_cred_contents(context
, &creds_in
);
961 krb5_free_cred_contents(context
, &creds
);
964 krb5_free_principal(context
, client
);
967 krb5_cc_close(context
, ccache
);
970 krb5_free_context(context
);
977 * @brief Free the data stored in an smb_krb5_addresses structure.
979 * @param[in] context The library context
981 * @param[in] addr The address structure to free.
983 * @return 0 on success, a Kerberos error code otherwise.
985 krb5_error_code
smb_krb5_free_addresses(krb5_context context
,
986 smb_krb5_addresses
*addr
)
988 krb5_error_code ret
= 0;
992 #if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
993 krb5_free_addresses(context
, addr
->addrs
);
994 #elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
995 ret
= krb5_free_addresses(context
, addr
->addrs
);
996 SAFE_FREE(addr
->addrs
);
1003 #define MAX_NETBIOSNAME_LEN 16
1006 * @brief Add a netbios name to the array of addresses
1008 * @param[in] kerb_addr A pointer to the smb_krb5_addresses to add the
1011 * @param[in] netbios_name The netbios name to add.
1013 * @return 0 on success, a Kerberos error code otherwise.
1015 krb5_error_code
smb_krb5_gen_netbios_krb5_address(smb_krb5_addresses
**kerb_addr
,
1016 const char *netbios_name
)
1018 krb5_error_code ret
= 0;
1019 char buf
[MAX_NETBIOSNAME_LEN
];
1021 #if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
1022 krb5_address
**addrs
= NULL
;
1023 #elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
1024 krb5_addresses
*addrs
= NULL
;
1027 *kerb_addr
= (smb_krb5_addresses
*)SMB_MALLOC(sizeof(smb_krb5_addresses
));
1028 if (*kerb_addr
== NULL
) {
1032 /* temporarily duplicate put_name() code here to avoid dependency
1033 * issues for a 5 lines function */
1034 len
= strlen(netbios_name
);
1035 memcpy(buf
, netbios_name
,
1036 (len
< MAX_NETBIOSNAME_LEN
) ? len
: MAX_NETBIOSNAME_LEN
- 1);
1037 if (len
< MAX_NETBIOSNAME_LEN
- 1) {
1038 memset(buf
+ len
, ' ', MAX_NETBIOSNAME_LEN
- 1 - len
);
1040 buf
[MAX_NETBIOSNAME_LEN
- 1] = 0x20;
1042 #if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
1046 addrs
= (krb5_address
**)SMB_MALLOC(sizeof(krb5_address
*) * num_addr
);
1047 if (addrs
== NULL
) {
1048 SAFE_FREE(*kerb_addr
);
1052 memset(addrs
, 0, sizeof(krb5_address
*) * num_addr
);
1054 addrs
[0] = (krb5_address
*)SMB_MALLOC(sizeof(krb5_address
));
1055 if (addrs
[0] == NULL
) {
1057 SAFE_FREE(*kerb_addr
);
1061 addrs
[0]->magic
= KV5M_ADDRESS
;
1062 addrs
[0]->addrtype
= KRB5_ADDR_NETBIOS
;
1063 addrs
[0]->length
= MAX_NETBIOSNAME_LEN
;
1064 addrs
[0]->contents
= (unsigned char *)SMB_MALLOC(addrs
[0]->length
);
1065 if (addrs
[0]->contents
== NULL
) {
1066 SAFE_FREE(addrs
[0]);
1068 SAFE_FREE(*kerb_addr
);
1072 memcpy(addrs
[0]->contents
, buf
, addrs
[0]->length
);
1076 #elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
1078 addrs
= (krb5_addresses
*)SMB_MALLOC(sizeof(krb5_addresses
));
1079 if (addrs
== NULL
) {
1080 SAFE_FREE(*kerb_addr
);
1084 memset(addrs
, 0, sizeof(krb5_addresses
));
1087 addrs
->val
= (krb5_address
*)SMB_MALLOC(sizeof(krb5_address
));
1088 if (addrs
->val
== NULL
) {
1090 SAFE_FREE(kerb_addr
);
1094 addrs
->val
[0].addr_type
= KRB5_ADDR_NETBIOS
;
1095 addrs
->val
[0].address
.length
= MAX_NETBIOSNAME_LEN
;
1096 addrs
->val
[0].address
.data
= (unsigned char *)SMB_MALLOC(addrs
->val
[0].address
.length
);
1097 if (addrs
->val
[0].address
.data
== NULL
) {
1098 SAFE_FREE(addrs
->val
);
1100 SAFE_FREE(*kerb_addr
);
1104 memcpy(addrs
->val
[0].address
.data
, buf
, addrs
->val
[0].address
.length
);
1107 #error UNKNOWN_KRB5_ADDRESS_FORMAT
1109 (*kerb_addr
)->addrs
= addrs
;
1115 * @brief Get the enctype from a key table entry
1117 * @param[in] kt_entry Key table entry to get the enctype from.
1119 * @return The enctype from the entry.
1121 krb5_enctype
smb_krb5_kt_get_enctype_from_entry(krb5_keytab_entry
*kt_entry
)
1123 return KRB5_KEY_TYPE(KRB5_KT_KEY(kt_entry
));
1127 * @brief Free the contents of a key table entry.
1129 * @param[in] context The library context.
1131 * @param[in] kt_entry The key table entry to free the contents of.
1133 * @return 0 on success, a Kerberos error code otherwise.
1135 * The pointer itself is not freed.
1137 krb5_error_code
smb_krb5_kt_free_entry(krb5_context context
,
1138 krb5_keytab_entry
*kt_entry
)
1140 /* Try krb5_free_keytab_entry_contents first, since
1141 * MIT Kerberos >= 1.7 has both krb5_free_keytab_entry_contents and
1142 * krb5_kt_free_entry but only has a prototype for the first, while the
1143 * second is considered private.
1145 #if defined(HAVE_KRB5_FREE_KEYTAB_ENTRY_CONTENTS)
1146 return krb5_free_keytab_entry_contents(context
, kt_entry
);
1147 #elif defined(HAVE_KRB5_KT_FREE_ENTRY)
1148 return krb5_kt_free_entry(context
, kt_entry
);
1150 #error UNKNOWN_KT_FREE_FUNCTION
1156 * @brief Convert an encryption type to a string.
1158 * @param[in] context The library context.
1160 * @param[in] enctype The encryption type.
1162 * @param[in] etype_s A pointer to store the allocated encryption type as a
1165 * @return 0 on success, a Kerberos error code otherwise.
1167 * The caller needs to free the allocated string etype_s.
1169 krb5_error_code
smb_krb5_enctype_to_string(krb5_context context
,
1170 krb5_enctype enctype
,
1173 #ifdef HAVE_KRB5_ENCTYPE_TO_STRING_WITH_KRB5_CONTEXT_ARG
1174 return krb5_enctype_to_string(context
, enctype
, etype_s
); /* Heimdal */
1175 #elif defined(HAVE_KRB5_ENCTYPE_TO_STRING_WITH_SIZE_T_ARG)
1177 krb5_error_code ret
= krb5_enctype_to_string(enctype
, buf
, 256); /* MIT */
1181 *etype_s
= SMB_STRDUP(buf
);
1187 #error UNKNOWN_KRB5_ENCTYPE_TO_STRING_FUNCTION
1191 /* This MAX_NAME_LEN is a constant defined in krb5.h */
1192 #ifndef MAX_KEYTAB_NAME_LEN
1193 #define MAX_KEYTAB_NAME_LEN 1100
1197 * @brief Open a key table readonly or with readwrite access.
1199 * Allows to use a different keytab than the default one using a relative
1200 * path to the keytab.
1202 * @param[in] context The library context
1204 * @param[in] keytab_name_req The path to the key table.
1206 * @param[in] write_access Open with readwrite access.
1208 * @param[in] keytab A pointer o the opended key table.
1210 * The keytab pointer should be freed using krb5_kt_close().
1212 * @return 0 on success, a Kerberos error code otherwise.
1214 krb5_error_code
smb_krb5_kt_open_relative(krb5_context context
,
1215 const char *keytab_name_req
,
1217 krb5_keytab
*keytab
)
1219 krb5_error_code ret
= 0;
1220 TALLOC_CTX
*mem_ctx
;
1221 char keytab_string
[MAX_KEYTAB_NAME_LEN
];
1222 char *kt_str
= NULL
;
1223 bool found_valid_name
= false;
1224 const char *pragma
= "FILE";
1225 const char *tmp
= NULL
;
1227 if (!write_access
&& !keytab_name_req
) {
1228 /* caller just wants to read the default keytab readonly, so be it */
1229 return krb5_kt_default(context
, keytab
);
1232 mem_ctx
= talloc_init("smb_krb5_open_keytab");
1237 #ifdef HAVE_WRFILE_KEYTAB
1243 if (keytab_name_req
) {
1245 if (strlen(keytab_name_req
) > MAX_KEYTAB_NAME_LEN
) {
1246 ret
= KRB5_CONFIG_NOTENUFSPACE
;
1250 if ((strncmp(keytab_name_req
, "WRFILE:", 7) == 0) ||
1251 (strncmp(keytab_name_req
, "FILE:", 5) == 0)) {
1252 tmp
= keytab_name_req
;
1256 tmp
= talloc_asprintf(mem_ctx
, "%s:%s", pragma
, keytab_name_req
);
1265 /* we need to handle more complex keytab_strings, like:
1266 * "ANY:FILE:/etc/krb5.keytab,krb4:/etc/srvtab" */
1268 ret
= krb5_kt_default_name(context
, &keytab_string
[0], MAX_KEYTAB_NAME_LEN
- 2);
1273 DEBUG(10,("smb_krb5_open_keytab: krb5_kt_default_name returned %s\n", keytab_string
));
1275 tmp
= talloc_strdup(mem_ctx
, keytab_string
);
1281 if (strncmp(tmp
, "ANY:", 4) == 0) {
1285 memset(&keytab_string
, '\0', sizeof(keytab_string
));
1287 while (next_token_talloc(mem_ctx
, &tmp
, &kt_str
, ",")) {
1288 if (strncmp(kt_str
, "WRFILE:", 7) == 0) {
1289 found_valid_name
= true;
1294 if (strncmp(kt_str
, "FILE:", 5) == 0) {
1295 found_valid_name
= true;
1300 if (tmp
[0] == '/') {
1301 /* Treat as a FILE: keytab definition. */
1302 found_valid_name
= true;
1305 if (found_valid_name
) {
1306 if (tmp
[0] != '/') {
1307 ret
= KRB5_KT_BADNAME
;
1311 tmp
= talloc_asprintf(mem_ctx
, "%s:%s", pragma
, tmp
);
1320 if (!found_valid_name
) {
1321 ret
= KRB5_KT_UNKNOWN_TYPE
;
1326 DEBUG(10,("smb_krb5_open_keytab: resolving: %s\n", tmp
));
1327 ret
= krb5_kt_resolve(context
, tmp
, keytab
);
1330 TALLOC_FREE(mem_ctx
);
1335 * @brief Open a key table readonly or with readwrite access.
1337 * Allows to use a different keytab than the default one. The path needs to be
1338 * an absolute path or an error will be returned.
1340 * @param[in] context The library context
1342 * @param[in] keytab_name_req The path to the key table.
1344 * @param[in] write_access Open with readwrite access.
1346 * @param[in] keytab A pointer o the opended key table.
1348 * The keytab pointer should be freed using krb5_kt_close().
1350 * @return 0 on success, a Kerberos error code otherwise.
1352 krb5_error_code
smb_krb5_kt_open(krb5_context context
,
1353 const char *keytab_name_req
,
1355 krb5_keytab
*keytab
)
1359 if (keytab_name_req
== NULL
) {
1360 return KRB5_KT_BADNAME
;
1363 if (keytab_name_req
[0] == '/') {
1367 cmp
= strncmp(keytab_name_req
, "FILE:/", 6);
1372 cmp
= strncmp(keytab_name_req
, "WRFILE:/", 8);
1377 DBG_WARNING("ERROR: Invalid keytab name: %s\n", keytab_name_req
);
1379 return KRB5_KT_BADNAME
;
1382 return smb_krb5_kt_open_relative(context
,
1389 * @brief Get a key table name.
1391 * @param[in] mem_ctx The talloc context to use for allocation.
1393 * @param[in] context The library context.
1395 * @param[in] keytab The key table to get the name from.
1397 * @param[in] keytab_name A talloc'ed string of the key table name.
1399 * The talloc'ed name string needs to be freed with talloc_free().
1401 * @return 0 on success, a Kerberos error code otherwise.
1403 krb5_error_code
smb_krb5_kt_get_name(TALLOC_CTX
*mem_ctx
,
1404 krb5_context context
,
1406 const char **keytab_name
)
1408 char keytab_string
[MAX_KEYTAB_NAME_LEN
];
1409 krb5_error_code ret
= 0;
1411 ret
= krb5_kt_get_name(context
, keytab
,
1412 keytab_string
, MAX_KEYTAB_NAME_LEN
- 2);
1417 *keytab_name
= talloc_strdup(mem_ctx
, keytab_string
);
1418 if (!*keytab_name
) {
1426 * @brief Seek and delete old entries in a keytab based on the passed
1429 * @param[in] context The KRB5 context to use.
1431 * @param[in] keytab The keytab to operate on.
1433 * @param[in] kvno The kvnco to use.
1435 * @param[in] princ_s The principal as a string to search for.
1437 * @param[in] princ The principal as a krb5_principal to search for.
1439 * @param[in] flush Weather to flush the complete keytab.
1441 * @param[in] keep_old_entries Keep the entry with the previous kvno.
1443 * @retval 0 on Sucess
1445 * @return An appropriate KRB5 error code.
1447 krb5_error_code
smb_krb5_kt_seek_and_delete_old_entries(krb5_context context
,
1450 krb5_enctype enctype
,
1451 const char *princ_s
,
1452 krb5_principal princ
,
1454 bool keep_old_entries
)
1456 krb5_error_code ret
;
1457 krb5_kt_cursor cursor
;
1458 krb5_keytab_entry kt_entry
;
1459 char *ktprinc
= NULL
;
1460 krb5_kvno old_kvno
= kvno
- 1;
1461 TALLOC_CTX
*tmp_ctx
;
1463 ZERO_STRUCT(cursor
);
1464 ZERO_STRUCT(kt_entry
);
1466 ret
= krb5_kt_start_seq_get(context
, keytab
, &cursor
);
1467 if (ret
== KRB5_KT_END
|| ret
== ENOENT
) {
1472 tmp_ctx
= talloc_new(NULL
);
1473 if (tmp_ctx
== NULL
) {
1477 DEBUG(3, (__location__
": Will try to delete old keytab entries\n"));
1478 while (!krb5_kt_next_entry(context
, keytab
, &kt_entry
, &cursor
)) {
1479 bool name_ok
= false;
1480 krb5_enctype kt_entry_enctype
=
1481 smb_krb5_kt_get_enctype_from_entry(&kt_entry
);
1483 if (!flush
&& (princ_s
!= NULL
)) {
1484 ret
= smb_krb5_unparse_name(tmp_ctx
, context
,
1488 DEBUG(1, (__location__
1489 ": smb_krb5_unparse_name failed "
1490 "(%s)\n", error_message(ret
)));
1494 #ifdef HAVE_KRB5_KT_COMPARE
1495 name_ok
= krb5_kt_compare(context
, &kt_entry
,
1498 name_ok
= (strcmp(ktprinc
, princ_s
) == 0);
1502 DEBUG(10, (__location__
": ignoring keytab "
1503 "entry principal %s, kvno = %d\n",
1504 ktprinc
, kt_entry
.vno
));
1507 * just free this entry and continue. */
1508 ret
= smb_krb5_kt_free_entry(context
,
1510 ZERO_STRUCT(kt_entry
);
1512 DEBUG(1, (__location__
1513 ": smb_krb5_kt_free_entry "
1515 error_message(ret
)));
1519 TALLOC_FREE(ktprinc
);
1523 TALLOC_FREE(ktprinc
);
1526 /*------------------------------------------------------------
1527 * Save the entries with kvno - 1. This is what microsoft does
1528 * to allow people with existing sessions that have kvno - 1
1529 * to still work. Otherwise, when the password for the machine
1530 * changes, all kerberizied sessions will 'break' until either
1531 * the client reboots or the client's session key expires and
1532 * they get a new session ticket with the new kvno.
1533 * Some keytab files only store the kvno in 8bits, limit
1534 * the compare accordingly.
1537 if (!flush
&& ((kt_entry
.vno
& 0xff) == (old_kvno
& 0xff))) {
1538 DEBUG(5, (__location__
": Saving previous (kvno %d) "
1539 "entry for principal: %s.\n",
1540 old_kvno
, princ_s
));
1544 if (keep_old_entries
) {
1545 DEBUG(5, (__location__
": Saving old (kvno %d) "
1546 "entry for principal: %s.\n",
1552 (kt_entry
.vno
== kvno
) &&
1553 (kt_entry_enctype
!= enctype
))
1555 DEBUG(5, (__location__
": Saving entry with kvno [%d] "
1556 "enctype [%d] for principal: %s.\n",
1557 kvno
, kt_entry_enctype
, princ_s
));
1561 DEBUG(5, (__location__
": Found old entry for principal: %s "
1562 "(kvno %d) - trying to remove it.\n",
1563 princ_s
, kt_entry
.vno
));
1565 ret
= krb5_kt_end_seq_get(context
, keytab
, &cursor
);
1566 ZERO_STRUCT(cursor
);
1568 DEBUG(1, (__location__
": krb5_kt_end_seq_get() "
1569 "failed (%s)\n", error_message(ret
)));
1572 ret
= krb5_kt_remove_entry(context
, keytab
, &kt_entry
);
1574 DEBUG(1, (__location__
": krb5_kt_remove_entry() "
1575 "failed (%s)\n", error_message(ret
)));
1579 DEBUG(5, (__location__
": removed old entry for principal: "
1580 "%s (kvno %d).\n", princ_s
, kt_entry
.vno
));
1582 ret
= krb5_kt_start_seq_get(context
, keytab
, &cursor
);
1584 DEBUG(1, (__location__
": krb5_kt_start_seq() failed "
1585 "(%s)\n", error_message(ret
)));
1588 ret
= smb_krb5_kt_free_entry(context
, &kt_entry
);
1589 ZERO_STRUCT(kt_entry
);
1591 DEBUG(1, (__location__
": krb5_kt_remove_entry() "
1592 "failed (%s)\n", error_message(ret
)));
1598 talloc_free(tmp_ctx
);
1599 if (!all_zero((uint8_t *)&kt_entry
, sizeof(kt_entry
))) {
1600 smb_krb5_kt_free_entry(context
, &kt_entry
);
1602 if (!all_zero((uint8_t *)&cursor
, sizeof(cursor
))) {
1603 krb5_kt_end_seq_get(context
, keytab
, &cursor
);
1609 * @brief Add a keytab entry for the given principal
1611 * @param[in] context The krb5 context to use.
1613 * @param[in] keytab The keytab to add the entry to.
1615 * @param[in] kvno The kvno to use.
1617 * @param[in] princ_s The principal as a string.
1619 * @param[in] salt_principal The salt principal to salt the password with.
1620 * Only needed for keys which support salting.
1621 * If no salt is used set no_salt to false and
1624 * @param[in] enctype The encryption type of the keytab entry.
1626 * @param[in] password The password of the keytab entry.
1628 * @param[in] no_salt If the password should not be salted. Normally
1629 * this is only set to false for encryption types
1630 * which do not support salting like RC4.
1632 * @param[in] keep_old_entries Wether to keep or delte old keytab entries.
1634 * @retval 0 on Success
1636 * @return A corresponding KRB5 error code.
1638 * @see smb_krb5_kt_open()
1640 krb5_error_code
smb_krb5_kt_add_entry(krb5_context context
,
1643 const char *princ_s
,
1644 const char *salt_principal
,
1645 krb5_enctype enctype
,
1646 krb5_data
*password
,
1648 bool keep_old_entries
)
1650 krb5_error_code ret
;
1651 krb5_keytab_entry kt_entry
;
1652 krb5_principal princ
= NULL
;
1653 krb5_keyblock
*keyp
;
1655 ZERO_STRUCT(kt_entry
);
1657 ret
= smb_krb5_parse_name(context
, princ_s
, &princ
);
1659 DEBUG(1, (__location__
": smb_krb5_parse_name(%s) "
1660 "failed (%s)\n", princ_s
, error_message(ret
)));
1664 /* Seek and delete old keytab entries */
1665 ret
= smb_krb5_kt_seek_and_delete_old_entries(context
,
1677 /* If we get here, we have deleted all the old entries with kvno's
1678 * not equal to the current kvno-1. */
1680 keyp
= KRB5_KT_KEY(&kt_entry
);
1683 KRB5_KEY_DATA(keyp
) = (KRB5_KEY_DATA_CAST
*)SMB_MALLOC(password
->length
);
1684 if (KRB5_KEY_DATA(keyp
) == NULL
) {
1688 memcpy(KRB5_KEY_DATA(keyp
), password
->data
, password
->length
);
1689 KRB5_KEY_LENGTH(keyp
) = password
->length
;
1690 KRB5_KEY_TYPE(keyp
) = enctype
;
1692 krb5_principal salt_princ
= NULL
;
1694 /* Now add keytab entries for all encryption types */
1695 ret
= smb_krb5_parse_name(context
, salt_principal
, &salt_princ
);
1697 DBG_WARNING("krb5_parse_name(%s) failed (%s)\n",
1698 salt_principal
, error_message(ret
));
1702 ret
= smb_krb5_create_key_from_string(context
,
1708 krb5_free_principal(context
, salt_princ
);
1714 kt_entry
.principal
= princ
;
1715 kt_entry
.vno
= kvno
;
1717 DEBUG(3, (__location__
": adding keytab entry for (%s) with "
1718 "encryption type (%d) and version (%d)\n",
1719 princ_s
, enctype
, kt_entry
.vno
));
1720 ret
= krb5_kt_add_entry(context
, keytab
, &kt_entry
);
1721 krb5_free_keyblock_contents(context
, keyp
);
1722 ZERO_STRUCT(kt_entry
);
1724 DEBUG(1, (__location__
": adding entry to keytab "
1725 "failed (%s)\n", error_message(ret
)));
1731 krb5_free_principal(context
, princ
);
1737 #if defined(HAVE_KRB5_GET_CREDS_OPT_SET_IMPERSONATE) && \
1738 defined(HAVE_KRB5_GET_CREDS_OPT_ALLOC) && \
1739 defined(HAVE_KRB5_GET_CREDS)
1740 static krb5_error_code
smb_krb5_get_credentials_for_user_opt(krb5_context context
,
1743 krb5_principal server
,
1744 krb5_principal impersonate_princ
,
1745 krb5_creds
**out_creds
)
1747 krb5_error_code ret
;
1748 krb5_get_creds_opt opt
;
1750 ret
= krb5_get_creds_opt_alloc(context
, &opt
);
1754 krb5_get_creds_opt_add_options(context
, opt
, KRB5_GC_FORWARDABLE
);
1756 if (impersonate_princ
) {
1757 ret
= krb5_get_creds_opt_set_impersonate(context
, opt
,
1764 ret
= krb5_get_creds(context
, opt
, ccache
, server
, out_creds
);
1771 krb5_get_creds_opt_free(context
, opt
);
1775 #endif /* HAVE_KRB5_GET_CREDS_OPT_SET_IMPERSONATE */
1777 #ifdef HAVE_KRB5_GET_CREDENTIALS_FOR_USER
1779 #if !HAVE_DECL_KRB5_GET_CREDENTIALS_FOR_USER
1780 krb5_error_code KRB5_CALLCONV
1781 krb5_get_credentials_for_user(krb5_context context
, krb5_flags options
,
1782 krb5_ccache ccache
, krb5_creds
*in_creds
,
1783 krb5_data
*subject_cert
,
1784 krb5_creds
**out_creds
);
1785 #endif /* !HAVE_DECL_KRB5_GET_CREDENTIALS_FOR_USER */
1787 static krb5_error_code
smb_krb5_get_credentials_for_user(krb5_context context
,
1790 krb5_principal server
,
1791 krb5_principal impersonate_princ
,
1792 krb5_creds
**out_creds
)
1794 krb5_error_code ret
;
1795 krb5_creds in_creds
;
1797 ZERO_STRUCT(in_creds
);
1799 if (impersonate_princ
) {
1801 in_creds
.server
= me
;
1802 in_creds
.client
= impersonate_princ
;
1804 ret
= krb5_get_credentials_for_user(context
,
1805 0, /* krb5_flags options */
1808 NULL
, /* krb5_data *subject_cert */
1811 in_creds
.client
= me
;
1812 in_creds
.server
= server
;
1814 ret
= krb5_get_credentials(context
, 0, ccache
,
1815 &in_creds
, out_creds
);
1820 #endif /* HAVE_KRB5_GET_CREDENTIALS_FOR_USER */
1823 * smb_krb5_get_credentials
1825 * @brief Get krb5 credentials for a server
1827 * @param[in] context An initialized krb5_context
1828 * @param[in] ccache An initialized krb5_ccache
1829 * @param[in] me The krb5_principal of the caller
1830 * @param[in] server The krb5_principal of the requested service
1831 * @param[in] impersonate_princ The krb5_principal of a user to impersonate as (optional)
1832 * @param[out] out_creds The returned krb5_creds structure
1833 * @return krb5_error_code
1836 krb5_error_code
smb_krb5_get_credentials(krb5_context context
,
1839 krb5_principal server
,
1840 krb5_principal impersonate_princ
,
1841 krb5_creds
**out_creds
)
1843 krb5_error_code ret
;
1844 krb5_creds
*creds
= NULL
;
1846 if (out_creds
!= NULL
) {
1850 if (impersonate_princ
) {
1851 #ifdef HAVE_KRB5_GET_CREDS_OPT_SET_IMPERSONATE /* Heimdal */
1852 ret
= smb_krb5_get_credentials_for_user_opt(context
, ccache
, me
, server
, impersonate_princ
, &creds
);
1853 #elif defined(HAVE_KRB5_GET_CREDENTIALS_FOR_USER) /* MIT */
1854 ret
= smb_krb5_get_credentials_for_user(context
, ccache
, me
, server
, impersonate_princ
, &creds
);
1859 krb5_creds in_creds
;
1861 ZERO_STRUCT(in_creds
);
1863 in_creds
.client
= me
;
1864 in_creds
.server
= server
;
1866 ret
= krb5_get_credentials(context
, 0, ccache
,
1879 krb5_free_creds(context
, creds
);
1886 * @brief Initialize a krb5_keyblock with the given data.
1888 * Initialized a new keyblock, allocates the contents fo the key and
1889 * copies the data into the keyblock.
1891 * @param[in] context The library context
1893 * @param[in] enctype The encryption type.
1895 * @param[in] data The date to initialize the keyblock with.
1897 * @param[in] length The length of the keyblock.
1899 * @param[in] key Newly allocated keyblock structure.
1901 * The key date must be freed using krb5_free_keyblock_contents() when it is
1904 * @return 0 on success, a Kerberos error code otherwise.
1906 krb5_error_code
smb_krb5_keyblock_init_contents(krb5_context context
,
1907 krb5_enctype enctype
,
1912 #if defined(HAVE_KRB5_KEYBLOCK_INIT)
1913 return krb5_keyblock_init(context
, enctype
, data
, length
, key
);
1915 memset(key
, 0, sizeof(krb5_keyblock
));
1916 KRB5_KEY_DATA(key
) = SMB_MALLOC(length
);
1917 if (NULL
== KRB5_KEY_DATA(key
)) {
1920 memcpy(KRB5_KEY_DATA(key
), data
, length
);
1921 KRB5_KEY_LENGTH(key
) = length
;
1922 KRB5_KEY_TYPE(key
) = enctype
;
1928 * @brief Simulate a kinit by putting the tgt in the given credential cache.
1930 * This function uses a keyblock rather than needingthe original password.
1932 * @param[in] ctx The library context
1934 * @param[in] cc The credential cache to put the tgt in.
1936 * @param[in] principal The client princial
1938 * @param[in] keyblock The keyblock to use.
1940 * @param[in] target_service The service name of the initial credentials (or NULL).
1942 * @param[in] krb_options Initial credential options.
1944 * @param[in] expire_time A pointer to store the experation time of the
1945 * credentials (or NULL).
1947 * @param[in] kdc_time A pointer to store the time when the ticket becomes
1950 * @return 0 on success, a Kerberos error code otherwise.
1952 krb5_error_code
smb_krb5_kinit_keyblock_ccache(krb5_context ctx
,
1954 krb5_principal principal
,
1955 krb5_keyblock
*keyblock
,
1956 const char *target_service
,
1957 krb5_get_init_creds_opt
*krb_options
,
1958 time_t *expire_time
,
1961 krb5_error_code code
= 0;
1962 krb5_creds my_creds
;
1964 #if defined(HAVE_KRB5_GET_INIT_CREDS_KEYBLOCK)
1965 code
= krb5_get_init_creds_keyblock(ctx
, &my_creds
, principal
,
1966 keyblock
, 0, target_service
,
1968 #elif defined(HAVE_KRB5_GET_INIT_CREDS_KEYTAB)
1970 #define SMB_CREDS_KEYTAB "MEMORY:tmp_smb_creds_XXXXXX"
1971 char tmp_name
[sizeof(SMB_CREDS_KEYTAB
)];
1972 krb5_keytab_entry entry
;
1976 memset(&entry
, 0, sizeof(entry
));
1977 entry
.principal
= principal
;
1978 *(KRB5_KT_KEY(&entry
)) = *keyblock
;
1980 memcpy(tmp_name
, SMB_CREDS_KEYTAB
, sizeof(SMB_CREDS_KEYTAB
));
1981 mask
= umask(S_IRWXO
| S_IRWXG
);
1984 if (tmp_name
[0] == 0) {
1985 return KRB5_KT_BADNAME
;
1987 code
= krb5_kt_resolve(ctx
, tmp_name
, &keytab
);
1992 code
= krb5_kt_add_entry(ctx
, keytab
, &entry
);
1994 (void)krb5_kt_close(ctx
, keytab
);
1998 code
= krb5_get_init_creds_keytab(ctx
, &my_creds
, principal
,
1999 keytab
, 0, target_service
,
2001 (void)krb5_kt_close(ctx
, keytab
);
2004 #error krb5_get_init_creds_keyblock not available!
2010 #ifndef SAMBA4_USES_HEIMDAL /* MIT */
2012 * We need to store the principal as returned from the KDC to the
2013 * credentials cache. If we don't do that the KRB5 library is not
2014 * able to find the tickets it is looking for
2016 principal
= my_creds
.client
;
2018 code
= krb5_cc_initialize(ctx
, cc
, principal
);
2023 code
= krb5_cc_store_cred(ctx
, cc
, &my_creds
);
2029 *expire_time
= (time_t) my_creds
.times
.endtime
;
2033 *kdc_time
= (time_t) my_creds
.times
.starttime
;
2038 krb5_free_cred_contents(ctx
, &my_creds
);
2043 * @brief Simulate a kinit by putting the tgt in the given credential cache.
2045 * @param[in] ctx The library context
2047 * @param[in] cc The credential cache to put the tgt in.
2049 * @param[in] principal The client princial
2051 * @param[in] password The password (or NULL).
2053 * @param[in] target_service The service name of the initial credentials (or NULL).
2055 * @param[in] krb_options Initial credential options.
2057 * @param[in] expire_time A pointer to store the experation time of the
2058 * credentials (or NULL).
2060 * @param[in] kdc_time A pointer to store the time when the ticket becomes
2063 * @return 0 on success, a Kerberos error code otherwise.
2065 krb5_error_code
smb_krb5_kinit_password_ccache(krb5_context ctx
,
2067 krb5_principal principal
,
2068 const char *password
,
2069 const char *target_service
,
2070 krb5_get_init_creds_opt
*krb_options
,
2071 time_t *expire_time
,
2074 krb5_error_code code
= 0;
2075 krb5_creds my_creds
;
2077 code
= krb5_get_init_creds_password(ctx
, &my_creds
, principal
,
2078 password
, NULL
, NULL
, 0,
2079 target_service
, krb_options
);
2084 #ifndef SAMBA4_USES_HEIMDAL /* MIT */
2086 * We need to store the principal as returned from the KDC to the
2087 * credentials cache. If we don't do that the KRB5 library is not
2088 * able to find the tickets it is looking for
2090 principal
= my_creds
.client
;
2092 code
= krb5_cc_initialize(ctx
, cc
, principal
);
2097 code
= krb5_cc_store_cred(ctx
, cc
, &my_creds
);
2103 *expire_time
= (time_t) my_creds
.times
.endtime
;
2107 *kdc_time
= (time_t) my_creds
.times
.starttime
;
2112 krb5_free_cred_contents(ctx
, &my_creds
);
2116 #ifdef SAMBA4_USES_HEIMDAL
2118 * @brief Simulate a kinit by putting the tgt in the given credential cache.
2120 * @param[in] ctx The library context
2122 * @param[in] cc The credential cache to store the tgt in.
2124 * @param[in] principal The initial client princial.
2126 * @param[in] password The password (or NULL).
2128 * @param[in] impersonate_principal The impersonatiion principal (or NULL).
2130 * @param[in] self_service The local service for S4U2Self if
2131 * impersonate_principal is specified).
2133 * @param[in] target_service The service name of the initial credentials
2134 * (kpasswd/REALM or a remote service). It defaults
2135 * to the krbtgt if NULL.
2137 * @param[in] krb_options Initial credential options.
2139 * @param[in] expire_time A pointer to store the experation time of the
2140 * credentials (or NULL).
2142 * @param[in] kdc_time A pointer to store the time when the ticket becomes
2145 * @return 0 on success, a Kerberos error code otherwise.
2147 krb5_error_code
smb_krb5_kinit_s4u2_ccache(krb5_context ctx
,
2148 krb5_ccache store_cc
,
2149 krb5_principal init_principal
,
2150 const char *init_password
,
2151 krb5_principal impersonate_principal
,
2152 const char *self_service
,
2153 const char *target_service
,
2154 krb5_get_init_creds_opt
*krb_options
,
2155 time_t *expire_time
,
2158 krb5_error_code code
= 0;
2159 krb5_get_creds_opt options
;
2160 krb5_principal store_principal
;
2161 krb5_creds store_creds
;
2162 krb5_creds
*s4u2self_creds
;
2163 Ticket s4u2self_ticket
;
2164 size_t s4u2self_ticketlen
;
2165 krb5_creds
*s4u2proxy_creds
;
2166 krb5_principal self_princ
;
2168 krb5_principal target_princ
;
2170 const char *self_realm
;
2171 const char *client_realm
= NULL
;
2172 krb5_principal blacklist_principal
= NULL
;
2173 krb5_principal whitelist_principal
= NULL
;
2175 code
= krb5_get_init_creds_password(ctx
, &store_creds
,
2186 store_principal
= init_principal
;
2189 * We are trying S4U2Self now:
2191 * As we do not want to expose our TGT in the
2192 * krb5_ccache, which is also holds the impersonated creds.
2194 * Some low level krb5/gssapi function might use the TGT
2195 * identity and let the client act as our machine account.
2197 * We need to avoid that and use a temporary krb5_ccache
2198 * in order to pass our TGT to the krb5_get_creds() function.
2200 code
= krb5_cc_new_unique(ctx
, NULL
, NULL
, &tmp_cc
);
2202 krb5_free_cred_contents(ctx
, &store_creds
);
2206 code
= krb5_cc_initialize(ctx
, tmp_cc
, store_creds
.client
);
2208 krb5_cc_destroy(ctx
, tmp_cc
);
2209 krb5_free_cred_contents(ctx
, &store_creds
);
2213 code
= krb5_cc_store_cred(ctx
, tmp_cc
, &store_creds
);
2215 krb5_free_cred_contents(ctx
, &store_creds
);
2216 krb5_cc_destroy(ctx
, tmp_cc
);
2221 * we need to remember the client principal of our
2222 * TGT and make sure the KDC does not return this
2223 * in the impersonated tickets. This can happen
2224 * if the KDC does not support S4U2Self and S4U2Proxy.
2226 blacklist_principal
= store_creds
.client
;
2227 store_creds
.client
= NULL
;
2228 krb5_free_cred_contents(ctx
, &store_creds
);
2231 * Check if we also need S4U2Proxy or if S4U2Self is
2232 * enough in order to get a ticket for the target.
2234 if (target_service
== NULL
) {
2236 } else if (strcmp(target_service
, self_service
) == 0) {
2243 * For S4U2Self we need our own service principal,
2244 * which belongs to our own realm (available on
2245 * our client principal).
2247 self_realm
= krb5_principal_get_realm(ctx
, init_principal
);
2249 code
= krb5_parse_name(ctx
, self_service
, &self_princ
);
2251 krb5_free_principal(ctx
, blacklist_principal
);
2252 krb5_cc_destroy(ctx
, tmp_cc
);
2256 code
= krb5_principal_set_realm(ctx
, self_princ
, self_realm
);
2258 krb5_free_principal(ctx
, blacklist_principal
);
2259 krb5_free_principal(ctx
, self_princ
);
2260 krb5_cc_destroy(ctx
, tmp_cc
);
2264 code
= krb5_get_creds_opt_alloc(ctx
, &options
);
2266 krb5_free_principal(ctx
, blacklist_principal
);
2267 krb5_free_principal(ctx
, self_princ
);
2268 krb5_cc_destroy(ctx
, tmp_cc
);
2274 * If we want S4U2Proxy, we need the forwardable flag
2275 * on the S4U2Self ticket.
2277 krb5_get_creds_opt_set_options(ctx
, options
, KRB5_GC_FORWARDABLE
);
2280 code
= krb5_get_creds_opt_set_impersonate(ctx
, options
,
2281 impersonate_principal
);
2283 krb5_get_creds_opt_free(ctx
, options
);
2284 krb5_free_principal(ctx
, blacklist_principal
);
2285 krb5_free_principal(ctx
, self_princ
);
2286 krb5_cc_destroy(ctx
, tmp_cc
);
2290 code
= krb5_get_creds(ctx
, options
, tmp_cc
,
2291 self_princ
, &s4u2self_creds
);
2292 krb5_get_creds_opt_free(ctx
, options
);
2293 krb5_free_principal(ctx
, self_princ
);
2295 krb5_free_principal(ctx
, blacklist_principal
);
2296 krb5_cc_destroy(ctx
, tmp_cc
);
2301 krb5_cc_destroy(ctx
, tmp_cc
);
2304 * Now make sure we store the impersonated principal
2305 * and creds instead of the TGT related stuff
2306 * in the krb5_ccache of the caller.
2308 code
= krb5_copy_creds_contents(ctx
, s4u2self_creds
,
2310 krb5_free_creds(ctx
, s4u2self_creds
);
2316 * It's important to store the principal the KDC
2317 * returned, as otherwise the caller would not find
2318 * the S4U2Self ticket in the krb5_ccache lookup.
2320 store_principal
= store_creds
.client
;
2325 * We are trying S4U2Proxy:
2327 * We need the ticket from the S4U2Self step
2328 * and our TGT in order to get the delegated ticket.
2330 code
= decode_Ticket((const uint8_t *)s4u2self_creds
->ticket
.data
,
2331 s4u2self_creds
->ticket
.length
,
2333 &s4u2self_ticketlen
);
2335 krb5_free_creds(ctx
, s4u2self_creds
);
2336 krb5_free_principal(ctx
, blacklist_principal
);
2337 krb5_cc_destroy(ctx
, tmp_cc
);
2342 * we need to remember the client principal of the
2343 * S4U2Self stage and as it needs to match the one we
2344 * will get for the S4U2Proxy stage. We need this
2345 * in order to detect KDCs which does not support S4U2Proxy.
2347 whitelist_principal
= s4u2self_creds
->client
;
2348 s4u2self_creds
->client
= NULL
;
2349 krb5_free_creds(ctx
, s4u2self_creds
);
2352 * For S4U2Proxy we also got a target service principal,
2353 * which also belongs to our own realm (available on
2354 * our client principal).
2356 code
= krb5_parse_name(ctx
, target_service
, &target_princ
);
2358 free_Ticket(&s4u2self_ticket
);
2359 krb5_free_principal(ctx
, whitelist_principal
);
2360 krb5_free_principal(ctx
, blacklist_principal
);
2361 krb5_cc_destroy(ctx
, tmp_cc
);
2365 code
= krb5_principal_set_realm(ctx
, target_princ
, self_realm
);
2367 free_Ticket(&s4u2self_ticket
);
2368 krb5_free_principal(ctx
, target_princ
);
2369 krb5_free_principal(ctx
, whitelist_principal
);
2370 krb5_free_principal(ctx
, blacklist_principal
);
2371 krb5_cc_destroy(ctx
, tmp_cc
);
2375 code
= krb5_get_creds_opt_alloc(ctx
, &options
);
2377 free_Ticket(&s4u2self_ticket
);
2378 krb5_free_principal(ctx
, target_princ
);
2379 krb5_free_principal(ctx
, whitelist_principal
);
2380 krb5_free_principal(ctx
, blacklist_principal
);
2381 krb5_cc_destroy(ctx
, tmp_cc
);
2385 krb5_get_creds_opt_set_options(ctx
, options
, KRB5_GC_FORWARDABLE
);
2386 krb5_get_creds_opt_set_options(ctx
, options
, KRB5_GC_CONSTRAINED_DELEGATION
);
2388 code
= krb5_get_creds_opt_set_ticket(ctx
, options
, &s4u2self_ticket
);
2389 free_Ticket(&s4u2self_ticket
);
2391 krb5_get_creds_opt_free(ctx
, options
);
2392 krb5_free_principal(ctx
, target_princ
);
2393 krb5_free_principal(ctx
, whitelist_principal
);
2394 krb5_free_principal(ctx
, blacklist_principal
);
2395 krb5_cc_destroy(ctx
, tmp_cc
);
2399 code
= krb5_get_creds(ctx
, options
, tmp_cc
,
2400 target_princ
, &s4u2proxy_creds
);
2401 krb5_get_creds_opt_free(ctx
, options
);
2402 krb5_free_principal(ctx
, target_princ
);
2403 krb5_cc_destroy(ctx
, tmp_cc
);
2405 krb5_free_principal(ctx
, whitelist_principal
);
2406 krb5_free_principal(ctx
, blacklist_principal
);
2411 * Now make sure we store the impersonated principal
2412 * and creds instead of the TGT related stuff
2413 * in the krb5_ccache of the caller.
2415 code
= krb5_copy_creds_contents(ctx
, s4u2proxy_creds
,
2417 krb5_free_creds(ctx
, s4u2proxy_creds
);
2419 krb5_free_principal(ctx
, whitelist_principal
);
2420 krb5_free_principal(ctx
, blacklist_principal
);
2425 * It's important to store the principal the KDC
2426 * returned, as otherwise the caller would not find
2427 * the S4U2Self ticket in the krb5_ccache lookup.
2429 store_principal
= store_creds
.client
;
2432 if (blacklist_principal
&&
2433 krb5_principal_compare(ctx
, store_creds
.client
, blacklist_principal
)) {
2437 code
= krb5_unparse_name(ctx
, blacklist_principal
, &sp
);
2441 code
= krb5_unparse_name(ctx
, impersonate_principal
, &ip
);
2445 DEBUG(1, ("smb_krb5_kinit_password_cache: "
2446 "KDC returned self principal[%s] while impersonating [%s]\n",
2447 sp
?sp
:"<no memory>",
2448 ip
?ip
:"<no memory>"));
2453 krb5_free_principal(ctx
, whitelist_principal
);
2454 krb5_free_principal(ctx
, blacklist_principal
);
2455 krb5_free_cred_contents(ctx
, &store_creds
);
2456 return KRB5_FWD_BAD_PRINCIPAL
;
2458 if (blacklist_principal
) {
2459 krb5_free_principal(ctx
, blacklist_principal
);
2462 if (whitelist_principal
&&
2463 !krb5_principal_compare(ctx
, store_creds
.client
, whitelist_principal
)) {
2467 code
= krb5_unparse_name(ctx
, store_creds
.client
, &sp
);
2471 code
= krb5_unparse_name(ctx
, whitelist_principal
, &ep
);
2475 DEBUG(1, ("smb_krb5_kinit_password_cache: "
2476 "KDC returned wrong principal[%s] we expected [%s]\n",
2477 sp
?sp
:"<no memory>",
2478 ep
?ep
:"<no memory>"));
2483 krb5_free_principal(ctx
, whitelist_principal
);
2484 krb5_free_cred_contents(ctx
, &store_creds
);
2485 return KRB5_FWD_BAD_PRINCIPAL
;
2487 if (whitelist_principal
) {
2488 krb5_free_principal(ctx
, whitelist_principal
);
2491 code
= krb5_cc_initialize(ctx
, store_cc
, store_principal
);
2493 krb5_free_cred_contents(ctx
, &store_creds
);
2497 code
= krb5_cc_store_cred(ctx
, store_cc
, &store_creds
);
2499 krb5_free_cred_contents(ctx
, &store_creds
);
2503 client_realm
= krb5_principal_get_realm(ctx
, store_creds
.client
);
2504 if (client_realm
!= NULL
) {
2506 * Because the CANON flag doesn't have any impact
2507 * on the impersonate_principal => store_creds.client
2508 * realm mapping. We need to store the credentials twice,
2509 * once with the returned realm and once with the
2510 * realm of impersonate_principal.
2512 code
= krb5_principal_set_realm(ctx
, store_creds
.server
,
2515 krb5_free_cred_contents(ctx
, &store_creds
);
2519 code
= krb5_cc_store_cred(ctx
, store_cc
, &store_creds
);
2521 krb5_free_cred_contents(ctx
, &store_creds
);
2527 *expire_time
= (time_t) store_creds
.times
.endtime
;
2531 *kdc_time
= (time_t) store_creds
.times
.starttime
;
2534 krb5_free_cred_contents(ctx
, &store_creds
);
2540 #if !defined(HAVE_KRB5_MAKE_PRINCIPAL) && defined(HAVE_KRB5_BUILD_PRINCIPAL_ALLOC_VA)
2542 * @brief Create a principal name using a variable argument list.
2544 * @param[in] context The library context.
2546 * @param[inout] principal A pointer to the principal structure.
2548 * @param[in] _realm The realm to use. If NULL then the function will
2549 * get the default realm name.
2551 * @param[in] ... A list of 'char *' components, ending with NULL.
2553 * Use krb5_free_principal() to free the principal when it is no longer needed.
2555 * @return 0 on success, a Kerberos error code otherwise.
2557 krb5_error_code
smb_krb5_make_principal(krb5_context context
,
2558 krb5_principal
*principal
,
2559 const char *_realm
, ...)
2561 krb5_error_code code
;
2567 realm
= discard_const_p(char, _realm
);
2570 code
= krb5_get_default_realm(context
, &realm
);
2577 va_start(ap
, _realm
);
2578 code
= krb5_build_principal_alloc_va(context
, principal
,
2579 strlen(realm
), realm
,
2584 krb5_free_default_realm(context
, realm
);
2591 #if !defined(HAVE_KRB5_CC_GET_LIFETIME) && defined(HAVE_KRB5_CC_RETRIEVE_CRED)
2593 * @brief Get the lifetime of the initial ticket in the cache.
2595 * @param[in] context The kerberos context.
2597 * @param[in] id The credential cache to get the ticket lifetime.
2599 * @param[out] t A pointer to a time value to store the lifetime.
2601 * @return 0 on success, a krb5_error_code on error.
2603 krb5_error_code
smb_krb5_cc_get_lifetime(krb5_context context
,
2607 krb5_cc_cursor cursor
;
2608 krb5_error_code kerr
;
2614 kerr
= krb5_timeofday(context
, &now
);
2619 kerr
= krb5_cc_start_seq_get(context
, id
, &cursor
);
2624 while ((kerr
= krb5_cc_next_cred(context
, id
, &cursor
, &cred
)) == 0) {
2625 #ifndef HAVE_FLAGS_IN_KRB5_CREDS
2626 if (cred
.ticket_flags
& TKT_FLG_INITIAL
) {
2628 if (cred
.flags
.b
.initial
) {
2630 if (now
< cred
.times
.endtime
) {
2631 *t
= (time_t) (cred
.times
.endtime
- now
);
2633 krb5_free_cred_contents(context
, &cred
);
2636 krb5_free_cred_contents(context
, &cred
);
2639 krb5_cc_end_seq_get(context
, id
, &cursor
);
2643 #endif /* HAVE_KRB5_CC_GET_LIFETIME */
2645 #if !defined(HAVE_KRB5_FREE_CHECKSUM_CONTENTS) && defined(HAVE_FREE_CHECKSUM)
2646 void smb_krb5_free_checksum_contents(krb5_context ctx
, krb5_checksum
*cksum
)
2648 free_Checksum(cksum
);
2653 * @brief Compute a checksum operating on a keyblock.
2655 * This function computes a checksum over a PAC using the keyblock for a keyed
2658 * @param[in] mem_ctx A talloc context to alocate the signature on.
2660 * @param[in] pac_data The PAC as input.
2662 * @param[in] context The library context.
2664 * @param[in] keyblock Encryption key for a keyed checksum.
2666 * @param[out] sig_type The checksum type
2668 * @param[out] sig_blob The talloc'ed checksum
2670 * The caller must free the sig_blob with talloc_free() when it is not needed
2673 * @return 0 on success, a Kerberos error code otherwise.
2675 krb5_error_code
smb_krb5_make_pac_checksum(TALLOC_CTX
*mem_ctx
,
2676 DATA_BLOB
*pac_data
,
2677 krb5_context context
,
2678 const krb5_keyblock
*keyblock
,
2680 DATA_BLOB
*sig_blob
)
2682 krb5_error_code ret
;
2683 krb5_checksum cksum
;
2684 #if defined(HAVE_KRB5_CRYPTO_INIT) && defined(HAVE_KRB5_CREATE_CHECKSUM)
2688 ret
= krb5_crypto_init(context
,
2693 DEBUG(0,("krb5_crypto_init() failed: %s\n",
2694 smb_get_krb5_error_message(context
, ret
, mem_ctx
)));
2697 ret
= krb5_create_checksum(context
,
2699 KRB5_KU_OTHER_CKSUM
,
2705 DEBUG(2, ("PAC Verification failed: %s\n",
2706 smb_get_krb5_error_message(context
, ret
, mem_ctx
)));
2709 krb5_crypto_destroy(context
, crypto
);
2715 *sig_type
= cksum
.cksumtype
;
2716 *sig_blob
= data_blob_talloc(mem_ctx
,
2717 cksum
.checksum
.data
,
2718 cksum
.checksum
.length
);
2719 #elif defined(HAVE_KRB5_C_MAKE_CHECKSUM)
2722 input
.data
= (char *)pac_data
->data
;
2723 input
.length
= pac_data
->length
;
2725 ret
= krb5_c_make_checksum(context
,
2728 KRB5_KEYUSAGE_APP_DATA_CKSUM
,
2732 DEBUG(2, ("PAC Verification failed: %s\n",
2733 smb_get_krb5_error_message(context
, ret
, mem_ctx
)));
2737 *sig_type
= cksum
.checksum_type
;
2738 *sig_blob
= data_blob_talloc(mem_ctx
,
2743 #error krb5_create_checksum or krb5_c_make_checksum not available
2744 #endif /* HAVE_KRB5_C_MAKE_CHECKSUM */
2745 smb_krb5_free_checksum_contents(context
, &cksum
);
2752 * @brief Get realm of a principal
2754 * @param[in] context The library context
2756 * @param[in] principal The principal to get the realm from.
2758 * @return An allocated string with the realm or NULL if an error occurred.
2760 * The caller must free the realm string with free() if not needed anymore.
2762 char *smb_krb5_principal_get_realm(krb5_context context
,
2763 krb5_const_principal principal
)
2765 #ifdef HAVE_KRB5_PRINCIPAL_GET_REALM /* Heimdal */
2766 return strdup(discard_const_p(char, krb5_principal_get_realm(context
, principal
)));
2767 #elif defined(krb5_princ_realm) /* MIT */
2769 realm
= discard_const_p(krb5_data
,
2770 krb5_princ_realm(context
, principal
));
2771 return strndup(realm
->data
, realm
->length
);
2773 #error UNKNOWN_GET_PRINC_REALM_FUNCTIONS
2778 * @brief Get realm of a principal
2780 * @param[in] context The library context
2782 * @param[in] principal The principal to set the realm
2784 * @param[in] realm The realm as a string to set.
2786 * @retur 0 on success, a Kerberos error code otherwise.
2788 krb5_error_code
smb_krb5_principal_set_realm(krb5_context context
,
2789 krb5_principal principal
,
2792 #ifdef HAVE_KRB5_PRINCIPAL_SET_REALM /* Heimdal */
2793 return krb5_principal_set_realm(context
, principal
, realm
);
2794 #elif defined(krb5_princ_realm) && defined(krb5_princ_set_realm) /* MIT */
2795 krb5_error_code ret
;
2797 krb5_data
*old_data
;
2799 old_data
= krb5_princ_realm(context
, principal
);
2801 ret
= smb_krb5_copy_data_contents(&data
,
2808 /* free realm before setting */
2809 free(old_data
->data
);
2811 krb5_princ_set_realm(context
, principal
, &data
);
2815 #error UNKNOWN_PRINC_SET_REALM_FUNCTION
2821 * @brief Get the realm from the service hostname.
2823 * This function will look for a domain realm mapping in the [domain_realm]
2824 * section of the krb5.conf first and fallback to extract the realm from
2825 * the provided service hostname. As a last resort it will return the
2826 * provided client_realm.
2828 * @param[in] mem_ctx The talloc context
2830 * @param[in] hostname The service hostname
2832 * @param[in] client_realm If we can not find a mapping, fall back to
2835 * @return The realm to use for the service hostname, NULL if a fatal error
2838 char *smb_krb5_get_realm_from_hostname(TALLOC_CTX
*mem_ctx
,
2839 const char *hostname
,
2840 const char *client_realm
)
2842 #if defined(HAVE_KRB5_REALM_TYPE)
2844 krb5_realm
*realm_list
= NULL
;
2847 char **realm_list
= NULL
;
2850 krb5_error_code kerr
;
2851 krb5_context ctx
= NULL
;
2853 initialize_krb5_error_table();
2854 if (krb5_init_context(&ctx
)) {
2858 kerr
= krb5_get_host_realm(ctx
, hostname
, &realm_list
);
2859 if (kerr
== KRB5_ERR_HOST_REALM_UNKNOWN
) {
2864 DEBUG(3,("kerberos_get_realm_from_hostname %s: "
2866 hostname
? hostname
: "(NULL)",
2867 error_message(kerr
) ));
2871 if (realm_list
!= NULL
&&
2872 realm_list
[0] != NULL
&&
2873 realm_list
[0][0] != '\0') {
2874 realm
= talloc_strdup(mem_ctx
, realm_list
[0]);
2875 if (realm
== NULL
) {
2879 const char *p
= NULL
;
2882 * "dc6.samba2003.example.com"
2883 * returns a realm of "SAMBA2003.EXAMPLE.COM"
2885 * "dc6." returns realm as NULL
2887 p
= strchr_m(hostname
, '.');
2888 if (p
!= NULL
&& p
[1] != '\0') {
2889 realm
= talloc_strdup_upper(mem_ctx
, p
+ 1);
2890 if (realm
== NULL
) {
2896 if (realm
== NULL
) {
2897 realm
= talloc_strdup(mem_ctx
, client_realm
);
2904 krb5_free_host_realm(ctx
, realm_list
);
2907 krb5_free_context(ctx
);
2914 * @brief Get an error string from a Kerberos error code.
2916 * @param[in] context The library context.
2918 * @param[in] code The Kerberos error code.
2920 * @param[in] mem_ctx The talloc context to allocate the error string on.
2922 * @return A talloc'ed error string or NULL if an error occurred.
2924 * The caller must free the returned error string with talloc_free() if not
2927 char *smb_get_krb5_error_message(krb5_context context
,
2928 krb5_error_code code
,
2929 TALLOC_CTX
*mem_ctx
)
2933 #if defined(HAVE_KRB5_GET_ERROR_MESSAGE) && defined(HAVE_KRB5_FREE_ERROR_MESSAGE)
2934 const char *context_error
= krb5_get_error_message(context
, code
);
2935 if (context_error
) {
2936 ret
= talloc_asprintf(mem_ctx
, "%s: %s",
2937 error_message(code
), context_error
);
2938 krb5_free_error_message(context
, context_error
);
2942 ret
= talloc_strdup(mem_ctx
, error_message(code
));
2948 * @brief Return the kerberos library setting for: libdefaults:allow_weak_crypto
2950 * @param[in] context The library context
2952 * @return True if weak crypto is allowed, false if not.
2954 krb5_boolean
smb_krb5_get_allowed_weak_crypto(krb5_context context
)
2955 #if defined(HAVE_KRB5_CONFIG_GET_BOOL_DEFAULT)
2957 return krb5_config_get_bool_default(context
,
2961 "allow_weak_crypto",
2964 #elif defined(HAVE_PROFILE_H) && defined(HAVE_KRB5_GET_PROFILE)
2966 #include <profile.h>
2967 krb5_error_code ret
;
2968 krb5_boolean ret_default
= false;
2972 ret
= krb5_get_profile(context
,
2978 ret
= profile_get_boolean(profile
,
2980 "allow_weak_crypto",
2981 NULL
, /* subsubname */
2982 ret_default
, /* def_val */
2983 &ret_profile
/* *ret_default */);
2988 profile_release(profile
);
2993 #error UNKNOWN_KRB5_CONFIG_ROUTINES
2997 * @brief Return the type of a krb5_principal
2999 * @param[in] context The library context.
3001 * @param[in] principal The principal to get the type from.
3003 * @return The integer type of the principal.
3005 int smb_krb5_principal_get_type(krb5_context context
,
3006 krb5_const_principal principal
)
3008 #ifdef HAVE_KRB5_PRINCIPAL_GET_TYPE /* Heimdal */
3009 return krb5_principal_get_type(context
, principal
);
3010 #elif defined(krb5_princ_type) /* MIT */
3011 return krb5_princ_type(context
, principal
);
3013 #error UNKNOWN_PRINC_GET_TYPE_FUNCTION
3018 * @brief Set the type of a principal
3020 * @param[in] context The library context
3022 * @param[inout] principal The principal to set the type for.
3024 * @param[in] type The principal type to set.
3026 void smb_krb5_principal_set_type(krb5_context context
,
3027 krb5_principal principal
,
3030 #ifdef HAVE_KRB5_PRINCIPAL_SET_TYPE /* Heimdal */
3031 krb5_principal_set_type(context
, principal
, type
);
3032 #elif defined(krb5_princ_type) /* MIT */
3033 krb5_princ_type(context
, principal
) = type
;
3035 #error UNKNOWN_PRINC_SET_TYPE_FUNCTION
3039 #if !defined(HAVE_KRB5_WARNX)
3041 * @brief Log a Kerberos message
3043 * It sends the message to com_err.
3045 * @param[in] context The library context
3047 * @param[in] fmt The message format
3049 * @param[in] ... The message arguments
3051 * @return 0 on success.
3053 krb5_error_code
krb5_warnx(krb5_context context
, const char *fmt
, ...)
3057 va_start(args
, fmt
);
3058 com_err_va("samba-kdc", errno
, fmt
, args
);
3066 * @brief Copy a credential cache.
3068 * @param[in] context The library context.
3070 * @param[in] incc Credential cache to be copied.
3072 * @param[inout] outcc Copy of credential cache to be filled in.
3074 * @return 0 on success, a Kerberos error code otherwise.
3076 krb5_error_code
smb_krb5_cc_copy_creds(krb5_context context
,
3077 krb5_ccache incc
, krb5_ccache outcc
)
3079 #ifdef HAVE_KRB5_CC_COPY_CACHE /* Heimdal */
3080 return krb5_cc_copy_cache(context
, incc
, outcc
);
3081 #elif defined(HAVE_KRB5_CC_COPY_CREDS)
3082 krb5_error_code ret
;
3083 krb5_principal princ
= NULL
;
3085 ret
= krb5_cc_get_principal(context
, incc
, &princ
);
3089 ret
= krb5_cc_initialize(context
, outcc
, princ
);
3090 krb5_free_principal(context
, princ
);
3094 return krb5_cc_copy_creds(context
, incc
, outcc
);
3096 #error UNKNOWN_KRB5_CC_COPY_CACHE_OR_CREDS_FUNCTION
3100 /**********************************************************
3102 **********************************************************/
3104 static bool ads_cleanup_expired_creds(krb5_context context
,
3108 krb5_error_code retval
;
3109 const char *cc_type
= krb5_cc_get_type(context
, ccache
);
3111 DEBUG(3, ("ads_cleanup_expired_creds: Ticket in ccache[%s:%s] expiration %s\n",
3112 cc_type
, krb5_cc_get_name(context
, ccache
),
3113 http_timestring(talloc_tos(), credsp
->times
.endtime
)));
3115 /* we will probably need new tickets if the current ones
3116 will expire within 10 seconds.
3118 if (credsp
->times
.endtime
>= (time(NULL
) + 10))
3121 /* heimdal won't remove creds from a file ccache, and
3122 perhaps we shouldn't anyway, since internally we
3123 use memory ccaches, and a FILE one probably means that
3124 we're using creds obtained outside of our exectuable
3126 if (strequal(cc_type
, "FILE")) {
3127 DEBUG(5, ("ads_cleanup_expired_creds: We do not remove creds from a %s ccache\n", cc_type
));
3131 retval
= krb5_cc_remove_cred(context
, ccache
, 0, credsp
);
3133 DEBUG(1, ("ads_cleanup_expired_creds: krb5_cc_remove_cred failed, err %s\n",
3134 error_message(retval
)));
3135 /* If we have an error in this, we want to display it,
3136 but continue as though we deleted it */
3141 /* Allocate and setup the auth context into the state we need. */
3143 static krb5_error_code
ads_setup_auth_context(krb5_context context
,
3144 krb5_auth_context
*auth_context
)
3146 krb5_error_code retval
;
3148 retval
= krb5_auth_con_init(context
, auth_context
);
3150 DEBUG(1,("krb5_auth_con_init failed (%s)\n",
3151 error_message(retval
)));
3155 /* Ensure this is an addressless ticket. */
3156 retval
= krb5_auth_con_setaddrs(context
, *auth_context
, NULL
, NULL
);
3158 DEBUG(1,("krb5_auth_con_setaddrs failed (%s)\n",
3159 error_message(retval
)));
3165 #if defined(TKT_FLG_OK_AS_DELEGATE ) && defined(HAVE_KRB5_AUTH_CON_SETUSERUSERKEY) && defined(KRB5_AUTH_CONTEXT_USE_SUBKEY) && defined(HAVE_KRB5_AUTH_CON_SET_REQ_CKSUMTYPE)
3166 static krb5_error_code
ads_create_gss_checksum(krb5_data
*in_data
, /* [inout] */
3169 unsigned int orig_length
= in_data
->length
;
3170 unsigned int base_cksum_size
= GSSAPI_CHECKSUM_SIZE
;
3171 char *gss_cksum
= NULL
;
3174 /* Extra length field for delgated ticket. */
3175 base_cksum_size
+= 4;
3178 if ((unsigned int)base_cksum_size
+ orig_length
<
3179 (unsigned int)base_cksum_size
) {
3183 gss_cksum
= (char *)SMB_MALLOC(base_cksum_size
+ orig_length
);
3184 if (gss_cksum
== NULL
) {
3188 memset(gss_cksum
, '\0', base_cksum_size
+ orig_length
);
3189 SIVAL(gss_cksum
, 0, GSSAPI_BNDLENGTH
);
3192 * GSS_C_NO_CHANNEL_BINDINGS means 16 zero bytes.
3193 * This matches the behavior of heimdal and mit.
3195 * And it is needed to work against some closed source
3200 memset(&gss_cksum
[4], 0x00, GSSAPI_BNDLENGTH
);
3202 SIVAL(gss_cksum
, 20, gss_flags
);
3205 SSVAL(gss_cksum
, 24, 1); /* The Delegation Option identifier */
3206 SSVAL(gss_cksum
, 26, orig_length
);
3207 /* Copy the kerberos KRB_CRED data */
3208 memcpy(gss_cksum
+ 28, in_data
->data
, orig_length
);
3209 free(in_data
->data
);
3210 in_data
->data
= NULL
;
3211 in_data
->length
= 0;
3213 in_data
->data
= gss_cksum
;
3214 in_data
->length
= base_cksum_size
+ orig_length
;
3220 * We can't use krb5_mk_req because w2k wants the service to be in a particular
3223 static krb5_error_code
ads_krb5_mk_req(krb5_context context
,
3224 krb5_auth_context
*auth_context
,
3225 const krb5_flags ap_req_options
,
3226 const char *principal
,
3229 time_t *expire_time
,
3230 const char *impersonate_princ_s
)
3232 krb5_error_code retval
;
3233 krb5_principal server
;
3234 krb5_principal impersonate_princ
= NULL
;
3238 bool creds_ready
= false;
3239 int i
= 0, maxtries
= 3;
3242 ZERO_STRUCT(in_data
);
3244 retval
= smb_krb5_parse_name(context
, principal
, &server
);
3246 DEBUG(1,("ads_krb5_mk_req: Failed to parse principal %s\n", principal
));
3250 if (impersonate_princ_s
) {
3251 retval
= smb_krb5_parse_name(context
, impersonate_princ_s
,
3252 &impersonate_princ
);
3254 DEBUG(1,("ads_krb5_mk_req: Failed to parse principal %s\n", impersonate_princ_s
));
3259 /* obtain ticket & session key */
3261 if ((retval
= krb5_copy_principal(context
, server
, &creds
.server
))) {
3262 DEBUG(1,("ads_krb5_mk_req: krb5_copy_principal failed (%s)\n",
3263 error_message(retval
)));
3267 retval
= krb5_cc_get_principal(context
, ccache
, &creds
.client
);
3269 /* This can commonly fail on smbd startup with no ticket in the cache.
3270 * Report at higher level than 1. */
3271 DEBUG(3,("ads_krb5_mk_req: krb5_cc_get_principal failed (%s)\n",
3272 error_message(retval
)));
3276 while (!creds_ready
&& (i
< maxtries
)) {
3278 retval
= smb_krb5_get_credentials(context
,
3285 DBG_WARNING("smb_krb5_get_credentials failed for %s "
3288 error_message(retval
));
3292 /* cope with ticket being in the future due to clock skew */
3293 if ((unsigned)credsp
->times
.starttime
> time(NULL
)) {
3294 time_t t
= time(NULL
);
3295 int time_offset
=(int)((unsigned)credsp
->times
.starttime
-t
);
3296 DEBUG(4,("ads_krb5_mk_req: Advancing clock by %d seconds to cope with clock skew\n", time_offset
));
3297 krb5_set_real_time(context
, t
+ time_offset
+ 1, 0);
3300 ok
= ads_cleanup_expired_creds(context
, ccache
, credsp
);
3308 DBG_DEBUG("Ticket (%s) in ccache (%s:%s) is valid until: (%s - %u)\n",
3310 krb5_cc_get_type(context
, ccache
),
3311 krb5_cc_get_name(context
, ccache
),
3312 http_timestring(talloc_tos(),
3313 (unsigned)credsp
->times
.endtime
),
3314 (unsigned)credsp
->times
.endtime
);
3317 *expire_time
= (time_t)credsp
->times
.endtime
;
3320 /* Allocate the auth_context. */
3321 retval
= ads_setup_auth_context(context
, auth_context
);
3323 DBG_WARNING("ads_setup_auth_context failed (%s)\n",
3324 error_message(retval
));
3328 #if defined(TKT_FLG_OK_AS_DELEGATE ) && defined(HAVE_KRB5_AUTH_CON_SETUSERUSERKEY) && defined(KRB5_AUTH_CONTEXT_USE_SUBKEY) && defined(HAVE_KRB5_AUTH_CON_SET_REQ_CKSUMTYPE)
3330 uint32_t gss_flags
= 0;
3332 if (credsp
->ticket_flags
& TKT_FLG_OK_AS_DELEGATE
) {
3334 * Fetch a forwarded TGT from the KDC so that we can
3335 * hand off a 2nd ticket as part of the kerberos
3339 DBG_INFO("Server marked as OK to delegate to, building "
3340 "forwardable TGT\n");
3342 retval
= krb5_auth_con_setuseruserkey(context
,
3344 &credsp
->keyblock
);
3346 DBG_WARNING("krb5_auth_con_setuseruserkey "
3348 error_message(retval
));
3352 /* Must use a subkey for forwarded tickets. */
3353 retval
= krb5_auth_con_setflags(context
,
3355 KRB5_AUTH_CONTEXT_USE_SUBKEY
);
3357 DBG_WARNING("krb5_auth_con_setflags failed (%s)\n",
3358 error_message(retval
));
3362 retval
= krb5_fwd_tgt_creds(context
,/* Krb5 context [in] */
3363 *auth_context
, /* Authentication context [in] */
3364 discard_const_p(char, KRB5_TGS_NAME
), /* Ticket service name ("krbtgt") [in] */
3365 credsp
->client
, /* Client principal for the tgt [in] */
3366 credsp
->server
, /* Server principal for the tgt [in] */
3367 ccache
, /* Credential cache to use for storage [in] */
3368 1, /* Turn on for "Forwardable ticket" [in] */
3369 &in_data
); /* Resulting response [out] */
3372 DBG_INFO("krb5_fwd_tgt_creds failed (%s)\n",
3373 error_message(retval
));
3376 * This is not fatal. Delete the *auth_context and continue
3377 * with krb5_mk_req_extended to get a non-forwardable ticket.
3381 free( in_data
.data
);
3382 in_data
.data
= NULL
;
3385 krb5_auth_con_free(context
, *auth_context
);
3386 *auth_context
= NULL
;
3387 retval
= ads_setup_auth_context(context
, auth_context
);
3389 DBG_WARNING("ads_setup_auth_context failed (%s)\n",
3390 error_message(retval
));
3394 /* We got a delegated ticket. */
3395 gss_flags
|= GSS_C_DELEG_FLAG
;
3399 /* Frees and reallocates in_data into a GSS checksum blob. */
3400 retval
= ads_create_gss_checksum(&in_data
, gss_flags
);
3405 /* We always want GSS-checksum types. */
3406 retval
= krb5_auth_con_set_req_cksumtype(context
, *auth_context
, GSSAPI_CHECKSUM
);
3408 DEBUG(1,("krb5_auth_con_set_req_cksumtype failed (%s)\n",
3409 error_message(retval
)));
3415 retval
= krb5_mk_req_extended(context
, auth_context
, ap_req_options
,
3416 &in_data
, credsp
, outbuf
);
3418 DBG_WARNING("krb5_mk_req_extended failed (%s)\n",
3419 error_message(retval
));
3422 #if defined(TKT_FLG_OK_AS_DELEGATE ) && defined(HAVE_KRB5_AUTH_CON_SETUSERUSERKEY) && defined(KRB5_AUTH_CONTEXT_USE_SUBKEY) && defined(HAVE_KRB5_AUTH_CON_SET_REQ_CKSUMTYPE)
3427 free( in_data
.data
);
3431 krb5_free_creds(context
, credsp
);
3434 krb5_free_cred_contents(context
, &creds
);
3437 krb5_free_principal(context
, server
);
3438 if (impersonate_princ
) {
3439 krb5_free_principal(context
, impersonate_princ
);
3446 get a kerberos5 ticket for the given service
3448 int ads_krb5_cli_get_ticket(TALLOC_CTX
*mem_ctx
,
3449 const char *principal
,
3452 DATA_BLOB
*session_key_krb5
,
3453 uint32_t extra_ap_opts
, const char *ccname
,
3455 const char *impersonate_princ_s
)
3457 krb5_error_code retval
;
3459 krb5_context context
= NULL
;
3460 krb5_ccache ccdef
= NULL
;
3461 krb5_auth_context auth_context
= NULL
;
3462 krb5_enctype enc_types
[] = {
3463 #ifdef HAVE_ENCTYPE_AES256_CTS_HMAC_SHA1_96
3464 ENCTYPE_AES256_CTS_HMAC_SHA1_96
,
3466 #ifdef HAVE_ENCTYPE_AES128_CTS_HMAC_SHA1_96
3467 ENCTYPE_AES128_CTS_HMAC_SHA1_96
,
3469 ENCTYPE_ARCFOUR_HMAC
,
3470 ENCTYPE_DES_CBC_MD5
,
3471 ENCTYPE_DES_CBC_CRC
,
3475 initialize_krb5_error_table();
3476 retval
= krb5_init_context(&context
);
3478 DBG_WARNING("krb5_init_context failed (%s)\n",
3479 error_message(retval
));
3483 if (time_offset
!= 0) {
3484 krb5_set_real_time(context
, time(NULL
) + time_offset
, 0);
3487 retval
= krb5_cc_resolve(context
,
3488 ccname
? ccname
: krb5_cc_default_name(context
),
3491 DBG_WARNING("krb5_cc_default failed (%s)\n",
3492 error_message(retval
));
3496 retval
= krb5_set_default_tgs_ktypes(context
, enc_types
);
3498 DBG_WARNING("krb5_set_default_tgs_ktypes failed (%s)\n",
3499 error_message(retval
));
3503 retval
= ads_krb5_mk_req(context
,
3505 AP_OPTS_USE_SUBKEY
| (krb5_flags
)extra_ap_opts
,
3510 impersonate_princ_s
);
3515 ok
= smb_krb5_get_smb_session_key(mem_ctx
,
3525 *ticket
= data_blob_talloc(mem_ctx
, packet
.data
, packet
.length
);
3527 smb_krb5_free_data_contents(context
, &packet
);
3533 krb5_cc_close(context
, ccdef
);
3536 krb5_auth_con_free(context
, auth_context
);
3538 krb5_free_context(context
);
3544 #else /* HAVE_KRB5 */
3545 /* This saves a few linking headaches */
3546 int ads_krb5_cli_get_ticket(TALLOC_CTX
*mem_ctx
,
3547 const char *principal
,
3550 DATA_BLOB
*session_key_krb5
,
3551 uint32_t extra_ap_opts
, const char *ccname
,
3553 const char *impersonate_princ_s
)
3555 DEBUG(0,("NO KERBEROS SUPPORT\n"));
3559 #endif /* HAVE_KRB5 */