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/>.
25 #include "../librpc/gen_ndr/krb5pac.h"
26 #include "../lib/util/asn1.h"
27 #include "libsmb/nmblib.h"
29 #ifndef KRB5_AUTHDATA_WIN2K_PAC
30 #define KRB5_AUTHDATA_WIN2K_PAC 128
33 #ifndef KRB5_AUTHDATA_IF_RELEVANT
34 #define KRB5_AUTHDATA_IF_RELEVANT 1
39 #define GSSAPI_CHECKSUM 0x8003 /* Checksum type value for Kerberos */
40 #define GSSAPI_BNDLENGTH 16 /* Bind Length (rfc-1964 pg.3) */
41 #define GSSAPI_CHECKSUM_SIZE (4+GSSAPI_BNDLENGTH+4) /* Length of bind length,
42 bind field, flags field. */
44 /* MIT krb5 1.7beta3 (in Ubuntu Karmic) is missing the prototype,
45 but still has the symbol */
46 #if !HAVE_DECL_KRB5_AUTH_CON_SET_REQ_CKSUMTYPE
47 krb5_error_code
krb5_auth_con_set_req_cksumtype(
49 krb5_auth_context auth_context
,
50 krb5_cksumtype cksumtype
);
53 #if !defined(HAVE_KRB5_SET_DEFAULT_TGS_KTYPES)
55 #if defined(HAVE_KRB5_SET_DEFAULT_TGS_ENCTYPES)
57 /* With MIT kerberos, we should use krb5_set_default_tgs_enctypes in preference
58 * to krb5_set_default_tgs_ktypes. See
59 * http://lists.samba.org/archive/samba-technical/2006-July/048271.html
61 * If the MIT libraries are not exporting internal symbols, we will end up in
62 * this branch, which is correct. Otherwise we will continue to use the
65 krb5_error_code
krb5_set_default_tgs_ktypes(krb5_context ctx
, const krb5_enctype
*enc
)
67 return krb5_set_default_tgs_enctypes(ctx
, enc
);
70 #elif defined(HAVE_KRB5_SET_DEFAULT_IN_TKT_ETYPES)
73 krb5_error_code
krb5_set_default_tgs_ktypes(krb5_context ctx
, const krb5_enctype
*enc
)
75 return krb5_set_default_in_tkt_etypes(ctx
, enc
);
78 #endif /* HAVE_KRB5_SET_DEFAULT_TGS_ENCTYPES */
80 #endif /* HAVE_KRB5_SET_DEFAULT_TGS_KTYPES */
82 #if defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS)
84 bool setup_kaddr( krb5_address
*pkaddr
, struct sockaddr_storage
*paddr
)
86 memset(pkaddr
, '\0', sizeof(krb5_address
));
87 #if defined(HAVE_IPV6) && defined(KRB5_ADDRESS_INET6)
88 if (paddr
->ss_family
== AF_INET6
) {
89 pkaddr
->addr_type
= KRB5_ADDRESS_INET6
;
90 pkaddr
->address
.length
= sizeof(((struct sockaddr_in6
*)paddr
)->sin6_addr
);
91 pkaddr
->address
.data
= (char *)&(((struct sockaddr_in6
*)paddr
)->sin6_addr
);
95 if (paddr
->ss_family
== AF_INET
) {
96 pkaddr
->addr_type
= KRB5_ADDRESS_INET
;
97 pkaddr
->address
.length
= sizeof(((struct sockaddr_in
*)paddr
)->sin_addr
);
98 pkaddr
->address
.data
= (char *)&(((struct sockaddr_in
*)paddr
)->sin_addr
);
103 #elif defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS)
105 bool setup_kaddr( krb5_address
*pkaddr
, struct sockaddr_storage
*paddr
)
107 memset(pkaddr
, '\0', sizeof(krb5_address
));
108 #if defined(HAVE_IPV6) && defined(ADDRTYPE_INET6)
109 if (paddr
->ss_family
== AF_INET6
) {
110 pkaddr
->addrtype
= ADDRTYPE_INET6
;
111 pkaddr
->length
= sizeof(((struct sockaddr_in6
*)paddr
)->sin6_addr
);
112 pkaddr
->contents
= (krb5_octet
*)&(((struct sockaddr_in6
*)paddr
)->sin6_addr
);
116 if (paddr
->ss_family
== AF_INET
) {
117 pkaddr
->addrtype
= ADDRTYPE_INET
;
118 pkaddr
->length
= sizeof(((struct sockaddr_in
*)paddr
)->sin_addr
);
119 pkaddr
->contents
= (krb5_octet
*)&(((struct sockaddr_in
*)paddr
)->sin_addr
);
125 #error UNKNOWN_ADDRTYPE
128 int create_kerberos_key_from_string(krb5_context context
,
129 krb5_principal host_princ
,
132 krb5_enctype enctype
,
135 krb5_principal salt_princ
= NULL
;
138 * Check if we've determined that the KDC is salting keys for this
139 * principal/enctype in a non-obvious way. If it is, try to match
143 KRB5_KEY_DATA(key
) = (KRB5_KEY_DATA_CAST
*)SMB_MALLOC(password
->length
);
144 if (!KRB5_KEY_DATA(key
)) {
147 memcpy(KRB5_KEY_DATA(key
), password
->data
, password
->length
);
148 KRB5_KEY_LENGTH(key
) = password
->length
;
149 KRB5_KEY_TYPE(key
) = enctype
;
152 salt_princ
= kerberos_fetch_salt_princ_for_host_princ(context
, host_princ
, enctype
);
153 ret
= create_kerberos_key_from_string_direct(context
, salt_princ
? salt_princ
: host_princ
, password
, key
, enctype
);
155 krb5_free_principal(context
, salt_princ
);
160 #if defined(HAVE_KRB5_GET_PERMITTED_ENCTYPES)
161 krb5_error_code
get_kerberos_allowed_etypes(krb5_context context
,
162 krb5_enctype
**enctypes
)
164 return krb5_get_permitted_enctypes(context
, enctypes
);
166 #elif defined(HAVE_KRB5_GET_DEFAULT_IN_TKT_ETYPES)
167 krb5_error_code
get_kerberos_allowed_etypes(krb5_context context
,
168 krb5_enctype
**enctypes
)
170 #ifdef HAVE_KRB5_PDU_NONE_DECL
171 return krb5_get_default_in_tkt_etypes(context
, KRB5_PDU_NONE
, enctypes
);
173 return krb5_get_default_in_tkt_etypes(context
, enctypes
);
177 #error UNKNOWN_GET_ENCTYPES_FUNCTIONS
180 #if defined(HAVE_KRB5_AUTH_CON_SETKEY) && !defined(HAVE_KRB5_AUTH_CON_SETUSERUSERKEY)
181 krb5_error_code
krb5_auth_con_setuseruserkey(krb5_context context
,
182 krb5_auth_context auth_context
,
183 krb5_keyblock
*keyblock
)
185 return krb5_auth_con_setkey(context
, auth_context
, keyblock
);
189 bool unwrap_edata_ntstatus(TALLOC_CTX
*mem_ctx
,
191 DATA_BLOB
*edata_out
)
193 DATA_BLOB edata_contents
;
197 if (!edata
->length
) {
201 data
= asn1_init(mem_ctx
);
206 asn1_load(data
, *edata
);
207 asn1_start_tag(data
, ASN1_SEQUENCE(0));
208 asn1_start_tag(data
, ASN1_CONTEXT(1));
209 asn1_read_Integer(data
, &edata_type
);
211 if (edata_type
!= KRB5_PADATA_PW_SALT
) {
212 DEBUG(0,("edata is not of required type %d but of type %d\n",
213 KRB5_PADATA_PW_SALT
, edata_type
));
218 asn1_start_tag(data
, ASN1_CONTEXT(2));
219 asn1_read_OctetString(data
, talloc_tos(), &edata_contents
);
225 *edata_out
= data_blob_talloc(mem_ctx
, edata_contents
.data
, edata_contents
.length
);
227 data_blob_free(&edata_contents
);
233 bool unwrap_pac(TALLOC_CTX
*mem_ctx
, DATA_BLOB
*auth_data
, DATA_BLOB
*unwrapped_pac_data
)
235 DATA_BLOB pac_contents
;
239 if (!auth_data
->length
) {
243 data
= asn1_init(mem_ctx
);
248 asn1_load(data
, *auth_data
);
249 asn1_start_tag(data
, ASN1_SEQUENCE(0));
250 asn1_start_tag(data
, ASN1_SEQUENCE(0));
251 asn1_start_tag(data
, ASN1_CONTEXT(0));
252 asn1_read_Integer(data
, &data_type
);
254 if (data_type
!= KRB5_AUTHDATA_WIN2K_PAC
) {
255 DEBUG(10,("authorization data is not a Windows PAC (type: %d)\n", data_type
));
261 asn1_start_tag(data
, ASN1_CONTEXT(1));
262 asn1_read_OctetString(data
, talloc_tos(), &pac_contents
);
268 *unwrapped_pac_data
= data_blob_talloc(mem_ctx
, pac_contents
.data
, pac_contents
.length
);
270 data_blob_free(&pac_contents
);
275 bool get_auth_data_from_tkt(TALLOC_CTX
*mem_ctx
, DATA_BLOB
*auth_data
, krb5_ticket
*tkt
)
277 DATA_BLOB auth_data_wrapped
;
278 bool got_auth_data_pac
= False
;
281 #if defined(HAVE_KRB5_TKT_ENC_PART2)
282 if (tkt
->enc_part2
&& tkt
->enc_part2
->authorization_data
&&
283 tkt
->enc_part2
->authorization_data
[0] &&
284 tkt
->enc_part2
->authorization_data
[0]->length
)
286 for (i
= 0; tkt
->enc_part2
->authorization_data
[i
] != NULL
; i
++) {
288 if (tkt
->enc_part2
->authorization_data
[i
]->ad_type
!=
289 KRB5_AUTHDATA_IF_RELEVANT
) {
290 DEBUG(10,("get_auth_data_from_tkt: ad_type is %d\n",
291 tkt
->enc_part2
->authorization_data
[i
]->ad_type
));
295 auth_data_wrapped
= data_blob(tkt
->enc_part2
->authorization_data
[i
]->contents
,
296 tkt
->enc_part2
->authorization_data
[i
]->length
);
298 /* check if it is a PAC */
299 got_auth_data_pac
= unwrap_pac(mem_ctx
, &auth_data_wrapped
, auth_data
);
300 data_blob_free(&auth_data_wrapped
);
302 if (got_auth_data_pac
) {
307 return got_auth_data_pac
;
311 if (tkt
->ticket
.authorization_data
&&
312 tkt
->ticket
.authorization_data
->len
)
314 for (i
= 0; i
< tkt
->ticket
.authorization_data
->len
; i
++) {
316 if (tkt
->ticket
.authorization_data
->val
[i
].ad_type
!=
317 KRB5_AUTHDATA_IF_RELEVANT
) {
318 DEBUG(10,("get_auth_data_from_tkt: ad_type is %d\n",
319 tkt
->ticket
.authorization_data
->val
[i
].ad_type
));
323 auth_data_wrapped
= data_blob(tkt
->ticket
.authorization_data
->val
[i
].ad_data
.data
,
324 tkt
->ticket
.authorization_data
->val
[i
].ad_data
.length
);
326 /* check if it is a PAC */
327 got_auth_data_pac
= unwrap_pac(mem_ctx
, &auth_data_wrapped
, auth_data
);
328 data_blob_free(&auth_data_wrapped
);
330 if (got_auth_data_pac
) {
335 return got_auth_data_pac
;
341 krb5_const_principal
get_principal_from_tkt(krb5_ticket
*tkt
)
343 #if defined(HAVE_KRB5_TKT_ENC_PART2)
344 return tkt
->enc_part2
->client
;
350 void kerberos_set_creds_enctype(krb5_creds
*pcreds
, int enctype
)
352 #if defined(HAVE_KRB5_KEYBLOCK_IN_CREDS)
353 KRB5_KEY_TYPE((&pcreds
->keyblock
)) = enctype
;
354 #elif defined(HAVE_KRB5_SESSION_IN_CREDS)
355 KRB5_KEY_TYPE((&pcreds
->session
)) = enctype
;
357 #error UNKNOWN_KEYBLOCK_MEMBER_IN_KRB5_CREDS_STRUCT
361 bool kerberos_compatible_enctypes(krb5_context context
,
362 krb5_enctype enctype1
,
363 krb5_enctype enctype2
)
365 krb5_boolean similar
= 0;
367 krb5_c_enctype_compare(context
, enctype1
, enctype2
, &similar
);
368 return similar
? True
: False
;
371 static bool ads_cleanup_expired_creds(krb5_context context
,
375 krb5_error_code retval
;
376 const char *cc_type
= krb5_cc_get_type(context
, ccache
);
378 DEBUG(3, ("ads_cleanup_expired_creds: Ticket in ccache[%s:%s] expiration %s\n",
379 cc_type
, krb5_cc_get_name(context
, ccache
),
380 http_timestring(talloc_tos(), credsp
->times
.endtime
)));
382 /* we will probably need new tickets if the current ones
383 will expire within 10 seconds.
385 if (credsp
->times
.endtime
>= (time(NULL
) + 10))
388 /* heimdal won't remove creds from a file ccache, and
389 perhaps we shouldn't anyway, since internally we
390 use memory ccaches, and a FILE one probably means that
391 we're using creds obtained outside of our exectuable
393 if (strequal(cc_type
, "FILE")) {
394 DEBUG(5, ("ads_cleanup_expired_creds: We do not remove creds from a %s ccache\n", cc_type
));
398 retval
= krb5_cc_remove_cred(context
, ccache
, 0, credsp
);
400 DEBUG(1, ("ads_cleanup_expired_creds: krb5_cc_remove_cred failed, err %s\n",
401 error_message(retval
)));
402 /* If we have an error in this, we want to display it,
403 but continue as though we deleted it */
408 /* Allocate and setup the auth context into the state we need. */
410 static krb5_error_code
setup_auth_context(krb5_context context
,
411 krb5_auth_context
*auth_context
)
413 krb5_error_code retval
;
415 retval
= krb5_auth_con_init(context
, auth_context
);
417 DEBUG(1,("krb5_auth_con_init failed (%s)\n",
418 error_message(retval
)));
422 /* Ensure this is an addressless ticket. */
423 retval
= krb5_auth_con_setaddrs(context
, *auth_context
, NULL
, NULL
);
425 DEBUG(1,("krb5_auth_con_setaddrs failed (%s)\n",
426 error_message(retval
)));
432 #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)
433 static krb5_error_code
create_gss_checksum(krb5_data
*in_data
, /* [inout] */
436 unsigned int orig_length
= in_data
->length
;
437 unsigned int base_cksum_size
= GSSAPI_CHECKSUM_SIZE
;
438 char *gss_cksum
= NULL
;
441 /* Extra length field for delgated ticket. */
442 base_cksum_size
+= 4;
445 if ((unsigned int)base_cksum_size
+ orig_length
<
446 (unsigned int)base_cksum_size
) {
450 gss_cksum
= (char *)SMB_MALLOC(base_cksum_size
+ orig_length
);
451 if (gss_cksum
== NULL
) {
455 memset(gss_cksum
, '\0', base_cksum_size
+ orig_length
);
456 SIVAL(gss_cksum
, 0, GSSAPI_BNDLENGTH
);
459 * GSS_C_NO_CHANNEL_BINDINGS means 16 zero bytes.
460 * This matches the behavior of heimdal and mit.
462 * And it is needed to work against some closed source
467 memset(&gss_cksum
[4], 0x00, GSSAPI_BNDLENGTH
);
469 SIVAL(gss_cksum
, 20, gss_flags
);
472 SSVAL(gss_cksum
, 24, 1); /* The Delegation Option identifier */
473 SSVAL(gss_cksum
, 26, orig_length
);
474 /* Copy the kerberos KRB_CRED data */
475 memcpy(gss_cksum
+ 28, in_data
->data
, orig_length
);
477 in_data
->data
= NULL
;
480 in_data
->data
= gss_cksum
;
481 in_data
->length
= base_cksum_size
+ orig_length
;
487 we can't use krb5_mk_req because w2k wants the service to be in a particular format
489 static krb5_error_code
ads_krb5_mk_req(krb5_context context
,
490 krb5_auth_context
*auth_context
,
491 const krb5_flags ap_req_options
,
492 const char *principal
,
496 const char *impersonate_princ_s
)
498 krb5_error_code retval
;
499 krb5_principal server
;
500 krb5_principal impersonate_princ
= NULL
;
504 bool creds_ready
= False
;
505 int i
= 0, maxtries
= 3;
507 ZERO_STRUCT(in_data
);
509 retval
= smb_krb5_parse_name(context
, principal
, &server
);
511 DEBUG(1,("ads_krb5_mk_req: Failed to parse principal %s\n", principal
));
515 if (impersonate_princ_s
) {
516 retval
= smb_krb5_parse_name(context
, impersonate_princ_s
,
519 DEBUG(1,("ads_krb5_mk_req: Failed to parse principal %s\n", impersonate_princ_s
));
524 /* obtain ticket & session key */
526 if ((retval
= krb5_copy_principal(context
, server
, &creds
.server
))) {
527 DEBUG(1,("ads_krb5_mk_req: krb5_copy_principal failed (%s)\n",
528 error_message(retval
)));
532 if ((retval
= krb5_cc_get_principal(context
, ccache
, &creds
.client
))) {
533 /* This can commonly fail on smbd startup with no ticket in the cache.
534 * Report at higher level than 1. */
535 DEBUG(3,("ads_krb5_mk_req: krb5_cc_get_principal failed (%s)\n",
536 error_message(retval
)));
540 while (!creds_ready
&& (i
< maxtries
)) {
542 if ((retval
= smb_krb5_get_credentials(context
, ccache
,
547 DEBUG(1,("ads_krb5_mk_req: smb_krb5_get_credentials failed for %s (%s)\n",
548 principal
, error_message(retval
)));
552 /* cope with ticket being in the future due to clock skew */
553 if ((unsigned)credsp
->times
.starttime
> time(NULL
)) {
554 time_t t
= time(NULL
);
555 int time_offset
=(int)((unsigned)credsp
->times
.starttime
-t
);
556 DEBUG(4,("ads_krb5_mk_req: Advancing clock by %d seconds to cope with clock skew\n", time_offset
));
557 krb5_set_real_time(context
, t
+ time_offset
+ 1, 0);
560 if (!ads_cleanup_expired_creds(context
, ccache
, credsp
)) {
567 DEBUG(10,("ads_krb5_mk_req: Ticket (%s) in ccache (%s:%s) is valid until: (%s - %u)\n",
568 principal
, krb5_cc_get_type(context
, ccache
), krb5_cc_get_name(context
, ccache
),
569 http_timestring(talloc_tos(), (unsigned)credsp
->times
.endtime
),
570 (unsigned)credsp
->times
.endtime
));
573 *expire_time
= (time_t)credsp
->times
.endtime
;
576 /* Allocate the auth_context. */
577 retval
= setup_auth_context(context
, auth_context
);
579 DEBUG(1,("setup_auth_context failed (%s)\n",
580 error_message(retval
)));
584 #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)
586 uint32_t gss_flags
= 0;
588 if( credsp
->ticket_flags
& TKT_FLG_OK_AS_DELEGATE
) {
589 /* Fetch a forwarded TGT from the KDC so that we can hand off a 2nd ticket
590 as part of the kerberos exchange. */
592 DEBUG( 3, ("ads_krb5_mk_req: server marked as OK to delegate to, building forwardable TGT\n") );
594 retval
= krb5_auth_con_setuseruserkey(context
,
598 DEBUG(1,("krb5_auth_con_setuseruserkey failed (%s)\n",
599 error_message(retval
)));
603 /* Must use a subkey for forwarded tickets. */
604 retval
= krb5_auth_con_setflags(context
,
606 KRB5_AUTH_CONTEXT_USE_SUBKEY
);
608 DEBUG(1,("krb5_auth_con_setflags failed (%s)\n",
609 error_message(retval
)));
613 retval
= krb5_fwd_tgt_creds(context
,/* Krb5 context [in] */
614 *auth_context
, /* Authentication context [in] */
615 discard_const_p(char, KRB5_TGS_NAME
), /* Ticket service name ("krbtgt") [in] */
616 credsp
->client
, /* Client principal for the tgt [in] */
617 credsp
->server
, /* Server principal for the tgt [in] */
618 ccache
, /* Credential cache to use for storage [in] */
619 1, /* Turn on for "Forwardable ticket" [in] */
620 &in_data
); /* Resulting response [out] */
623 DEBUG( 3, ("krb5_fwd_tgt_creds failed (%s)\n",
624 error_message( retval
) ) );
627 * This is not fatal. Delete the *auth_context and continue
628 * with krb5_mk_req_extended to get a non-forwardable ticket.
632 free( in_data
.data
);
636 krb5_auth_con_free(context
, *auth_context
);
637 *auth_context
= NULL
;
638 retval
= setup_auth_context(context
, auth_context
);
640 DEBUG(1,("setup_auth_context failed (%s)\n",
641 error_message(retval
)));
645 /* We got a delegated ticket. */
646 gss_flags
|= GSS_C_DELEG_FLAG
;
650 /* Frees and reallocates in_data into a GSS checksum blob. */
651 retval
= create_gss_checksum(&in_data
, gss_flags
);
656 /* We always want GSS-checksum types. */
657 retval
= krb5_auth_con_set_req_cksumtype(context
, *auth_context
, GSSAPI_CHECKSUM
);
659 DEBUG(1,("krb5_auth_con_set_req_cksumtype failed (%s)\n",
660 error_message(retval
)));
666 retval
= krb5_mk_req_extended(context
, auth_context
, ap_req_options
,
667 &in_data
, credsp
, outbuf
);
669 DEBUG(1,("ads_krb5_mk_req: krb5_mk_req_extended failed (%s)\n",
670 error_message(retval
)));
673 #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)
678 free( in_data
.data
);
682 krb5_free_creds(context
, credsp
);
685 krb5_free_cred_contents(context
, &creds
);
688 krb5_free_principal(context
, server
);
689 if (impersonate_princ
) {
690 krb5_free_principal(context
, impersonate_princ
);
697 get a kerberos5 ticket for the given service
699 int cli_krb5_get_ticket(TALLOC_CTX
*mem_ctx
,
700 const char *principal
, time_t time_offset
,
701 DATA_BLOB
*ticket
, DATA_BLOB
*session_key_krb5
,
702 uint32_t extra_ap_opts
, const char *ccname
,
704 const char *impersonate_princ_s
)
707 krb5_error_code retval
;
709 krb5_context context
= NULL
;
710 krb5_ccache ccdef
= NULL
;
711 krb5_auth_context auth_context
= NULL
;
712 krb5_enctype enc_types
[] = {
713 ENCTYPE_ARCFOUR_HMAC
,
718 initialize_krb5_error_table();
719 retval
= krb5_init_context(&context
);
721 DEBUG(1, ("krb5_init_context failed (%s)\n",
722 error_message(retval
)));
726 if (time_offset
!= 0) {
727 krb5_set_real_time(context
, time(NULL
) + time_offset
, 0);
730 if ((retval
= krb5_cc_resolve(context
, ccname
?
731 ccname
: krb5_cc_default_name(context
), &ccdef
))) {
732 DEBUG(1, ("krb5_cc_default failed (%s)\n",
733 error_message(retval
)));
737 if ((retval
= krb5_set_default_tgs_ktypes(context
, enc_types
))) {
738 DEBUG(1, ("krb5_set_default_tgs_ktypes failed (%s)\n",
739 error_message(retval
)));
743 retval
= ads_krb5_mk_req(context
, &auth_context
,
744 AP_OPTS_USE_SUBKEY
| (krb5_flags
)extra_ap_opts
,
745 principal
, ccdef
, &packet
,
746 tgs_expire
, impersonate_princ_s
);
751 get_krb5_smb_session_key(mem_ctx
, context
, auth_context
,
752 session_key_krb5
, false);
754 *ticket
= data_blob_talloc(mem_ctx
, packet
.data
, packet
.length
);
756 kerberos_free_data_contents(context
, &packet
);
762 krb5_cc_close(context
, ccdef
);
764 krb5_auth_con_free(context
, auth_context
);
765 krb5_free_context(context
);
771 bool get_krb5_smb_session_key(TALLOC_CTX
*mem_ctx
,
772 krb5_context context
,
773 krb5_auth_context auth_context
,
774 DATA_BLOB
*session_key
, bool remote
)
776 krb5_keyblock
*skey
= NULL
;
777 krb5_error_code err
= 0;
781 err
= krb5_auth_con_getremotesubkey(context
,
782 auth_context
, &skey
);
784 err
= krb5_auth_con_getlocalsubkey(context
,
785 auth_context
, &skey
);
788 if (err
|| skey
== NULL
) {
789 DEBUG(10, ("KRB5 error getting session key %d\n", err
));
793 DEBUG(10, ("Got KRB5 session key of length %d\n",
794 (int)KRB5_KEY_LENGTH(skey
)));
796 *session_key
= data_blob_talloc(mem_ctx
,
798 KRB5_KEY_LENGTH(skey
));
799 dump_data_pw("KRB5 Session Key:\n",
801 session_key
->length
);
807 krb5_free_keyblock(context
, skey
);
814 #if defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING) && !defined(HAVE_KRB5_PRINC_COMPONENT)
815 const krb5_data
*krb5_princ_component(krb5_context context
, krb5_principal principal
, int i
);
817 const krb5_data
*krb5_princ_component(krb5_context context
, krb5_principal principal
, int i
)
819 static krb5_data kdata
;
821 kdata
.data
= discard_const_p(char, krb5_principal_get_comp_string(context
, principal
, i
));
822 kdata
.length
= strlen((const char *)kdata
.data
);
827 time_t get_authtime_from_tkt(krb5_ticket
*tkt
)
829 #if defined(HAVE_KRB5_TKT_ENC_PART2)
830 return tkt
->enc_part2
->times
.authtime
;
832 return tkt
->ticket
.authtime
;
836 #ifdef HAVE_KRB5_DECODE_AP_REQ /* Heimdal */
837 static int get_kvno_from_ap_req(krb5_ap_req
*ap_req
)
839 #ifdef HAVE_TICKET_POINTER_IN_KRB5_AP_REQ /* MIT */
840 if (ap_req
->ticket
->enc_part
.kvno
)
841 return ap_req
->ticket
->enc_part
.kvno
;
843 if (ap_req
->ticket
.enc_part
.kvno
)
844 return *ap_req
->ticket
.enc_part
.kvno
;
849 static krb5_enctype
get_enctype_from_ap_req(krb5_ap_req
*ap_req
)
851 #ifdef HAVE_ETYPE_IN_ENCRYPTEDDATA /* Heimdal */
852 return ap_req
->ticket
.enc_part
.etype
;
854 return ap_req
->ticket
->enc_part
.enctype
;
857 #endif /* HAVE_KRB5_DECODE_AP_REQ */
859 static krb5_error_code
860 get_key_from_keytab(krb5_context context
,
861 krb5_const_principal server
,
862 krb5_enctype enctype
,
864 krb5_keyblock
**out_key
)
866 krb5_keytab_entry entry
;
872 /* We have to open a new keytab handle here, as MIT does
873 an implicit open/getnext/close on krb5_kt_get_entry. We
874 may be in the middle of a keytab enumeration when this is
877 ret
= smb_krb5_open_keytab(context
, NULL
, False
, &keytab
);
879 DEBUG(1,("get_key_from_keytab: smb_krb5_open_keytab failed (%s)\n", error_message(ret
)));
883 if ( DEBUGLEVEL
>= 10 ) {
884 if (smb_krb5_unparse_name(talloc_tos(), context
, server
, &name
) == 0) {
885 DEBUG(10,("get_key_from_keytab: will look for kvno %d, enctype %d and name: %s\n",
886 kvno
, enctype
, name
));
891 ret
= krb5_kt_get_entry(context
,
899 DEBUG(0,("get_key_from_keytab: failed to retrieve key: %s\n", error_message(ret
)));
903 keyp
= KRB5_KT_KEY(&entry
);
905 ret
= krb5_copy_keyblock(context
, keyp
, out_key
);
907 DEBUG(0,("get_key_from_keytab: failed to copy key: %s\n", error_message(ret
)));
911 smb_krb5_kt_free_entry(context
, &entry
);
914 krb5_kt_close(context
, keytab
);
920 krb5_error_code
smb_krb5_get_keyinfo_from_ap_req(krb5_context context
,
921 const krb5_data
*inbuf
,
923 krb5_enctype
*enctype
)
925 #ifdef HAVE_KRB5_DECODE_AP_REQ /* Heimdal */
930 ret
= krb5_decode_ap_req(context
, inbuf
, &ap_req
);
934 *kvno
= get_kvno_from_ap_req(&ap_req
);
935 *enctype
= get_enctype_from_ap_req(&ap_req
);
937 free_AP_REQ(&ap_req
);
942 /* Possibly not an appropriate error code. */
943 return KRB5KDC_ERR_BADOPTION
;
946 krb5_error_code
krb5_rd_req_return_keyblock_from_keytab(krb5_context context
,
947 krb5_auth_context
*auth_context
,
948 const krb5_data
*inbuf
,
949 krb5_const_principal server
,
951 krb5_flags
*ap_req_options
,
952 krb5_ticket
**ticket
,
953 krb5_keyblock
**keyblock
)
957 krb5_enctype enctype
;
958 krb5_keyblock
*local_keyblock
;
960 ret
= krb5_rd_req(context
,
971 #ifdef KRB5_TICKET_HAS_KEYINFO
972 enctype
= (*ticket
)->enc_part
.enctype
;
973 kvno
= (*ticket
)->enc_part
.kvno
;
975 ret
= smb_krb5_get_keyinfo_from_ap_req(context
, inbuf
, &kvno
, &enctype
);
981 ret
= get_key_from_keytab(context
,
987 DEBUG(0,("krb5_rd_req_return_keyblock_from_keytab: failed to call get_key_from_keytab\n"));
992 if (ret
&& local_keyblock
!= NULL
) {
993 krb5_free_keyblock(context
, local_keyblock
);
995 *keyblock
= local_keyblock
;
1001 krb5_error_code
smb_krb5_renew_ticket(const char *ccache_string
, /* FILE:/tmp/krb5cc_0 */
1002 const char *client_string
, /* gd@BER.SUSE.DE */
1003 const char *service_string
, /* krbtgt/BER.SUSE.DE@BER.SUSE.DE */
1004 time_t *expire_time
)
1006 krb5_error_code ret
;
1007 krb5_context context
= NULL
;
1008 krb5_ccache ccache
= NULL
;
1009 krb5_principal client
= NULL
;
1010 krb5_creds creds
, creds_in
, *creds_out
= NULL
;
1013 ZERO_STRUCT(creds_in
);
1015 initialize_krb5_error_table();
1016 ret
= krb5_init_context(&context
);
1021 if (!ccache_string
) {
1022 ccache_string
= krb5_cc_default_name(context
);
1025 if (!ccache_string
) {
1030 DEBUG(10,("smb_krb5_renew_ticket: using %s as ccache\n", ccache_string
));
1032 /* FIXME: we should not fall back to defaults */
1033 ret
= krb5_cc_resolve(context
, discard_const_p(char, ccache_string
), &ccache
);
1038 if (client_string
) {
1039 ret
= smb_krb5_parse_name(context
, client_string
, &client
);
1044 ret
= krb5_cc_get_principal(context
, ccache
, &client
);
1050 ret
= krb5_get_renewed_creds(context
, &creds
, client
, ccache
, discard_const_p(char, service_string
));
1052 DEBUG(10,("smb_krb5_renew_ticket: krb5_get_kdc_cred failed: %s\n", error_message(ret
)));
1056 /* hm, doesn't that create a new one if the old one wasn't there? - Guenther */
1057 ret
= krb5_cc_initialize(context
, ccache
, client
);
1062 ret
= krb5_cc_store_cred(context
, ccache
, &creds
);
1065 *expire_time
= (time_t) creds
.times
.endtime
;
1069 krb5_free_cred_contents(context
, &creds_in
);
1072 krb5_free_creds(context
, creds_out
);
1074 krb5_free_cred_contents(context
, &creds
);
1078 krb5_free_principal(context
, client
);
1081 krb5_cc_close(context
, ccache
);
1084 krb5_free_context(context
);
1090 krb5_error_code
smb_krb5_free_addresses(krb5_context context
, smb_krb5_addresses
*addr
)
1092 krb5_error_code ret
= 0;
1096 #if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
1097 krb5_free_addresses(context
, addr
->addrs
);
1098 #elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
1099 ret
= krb5_free_addresses(context
, addr
->addrs
);
1100 SAFE_FREE(addr
->addrs
);
1107 krb5_error_code
smb_krb5_gen_netbios_krb5_address(smb_krb5_addresses
**kerb_addr
)
1109 krb5_error_code ret
= 0;
1111 #if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
1112 krb5_address
**addrs
= NULL
;
1113 #elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
1114 krb5_addresses
*addrs
= NULL
;
1117 *kerb_addr
= (smb_krb5_addresses
*)SMB_MALLOC(sizeof(smb_krb5_addresses
));
1118 if (*kerb_addr
== NULL
) {
1122 put_name(buf
, lp_netbios_name(), ' ', 0x20);
1124 #if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
1128 addrs
= (krb5_address
**)SMB_MALLOC(sizeof(krb5_address
*) * num_addr
);
1129 if (addrs
== NULL
) {
1130 SAFE_FREE(*kerb_addr
);
1134 memset(addrs
, 0, sizeof(krb5_address
*) * num_addr
);
1136 addrs
[0] = (krb5_address
*)SMB_MALLOC(sizeof(krb5_address
));
1137 if (addrs
[0] == NULL
) {
1139 SAFE_FREE(*kerb_addr
);
1143 addrs
[0]->magic
= KV5M_ADDRESS
;
1144 addrs
[0]->addrtype
= KRB5_ADDR_NETBIOS
;
1145 addrs
[0]->length
= MAX_NETBIOSNAME_LEN
;
1146 addrs
[0]->contents
= (unsigned char *)SMB_MALLOC(addrs
[0]->length
);
1147 if (addrs
[0]->contents
== NULL
) {
1148 SAFE_FREE(addrs
[0]);
1150 SAFE_FREE(*kerb_addr
);
1154 memcpy(addrs
[0]->contents
, buf
, addrs
[0]->length
);
1158 #elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
1160 addrs
= (krb5_addresses
*)SMB_MALLOC(sizeof(krb5_addresses
));
1161 if (addrs
== NULL
) {
1162 SAFE_FREE(*kerb_addr
);
1166 memset(addrs
, 0, sizeof(krb5_addresses
));
1169 addrs
->val
= (krb5_address
*)SMB_MALLOC(sizeof(krb5_address
));
1170 if (addrs
->val
== NULL
) {
1172 SAFE_FREE(kerb_addr
);
1176 addrs
->val
[0].addr_type
= KRB5_ADDR_NETBIOS
;
1177 addrs
->val
[0].address
.length
= MAX_NETBIOSNAME_LEN
;
1178 addrs
->val
[0].address
.data
= (unsigned char *)SMB_MALLOC(addrs
->val
[0].address
.length
);
1179 if (addrs
->val
[0].address
.data
== NULL
) {
1180 SAFE_FREE(addrs
->val
);
1182 SAFE_FREE(*kerb_addr
);
1186 memcpy(addrs
->val
[0].address
.data
, buf
, addrs
->val
[0].address
.length
);
1189 #error UNKNOWN_KRB5_ADDRESS_FORMAT
1191 (*kerb_addr
)->addrs
= addrs
;
1196 void smb_krb5_free_error(krb5_context context
, krb5_error
*krberror
)
1198 #ifdef HAVE_KRB5_FREE_ERROR_CONTENTS /* Heimdal */
1199 krb5_free_error_contents(context
, krberror
);
1201 krb5_free_error(context
, krberror
);
1205 krb5_error_code
handle_krberror_packet(krb5_context context
,
1208 krb5_error_code ret
;
1209 bool got_error_code
= False
;
1211 DEBUG(10,("handle_krberror_packet: got error packet\n"));
1213 #ifdef HAVE_E_DATA_POINTER_IN_KRB5_ERROR /* Heimdal */
1215 krb5_error krberror
;
1217 if ((ret
= krb5_rd_error(context
, packet
, &krberror
))) {
1218 DEBUG(10,("handle_krberror_packet: krb5_rd_error failed with: %s\n",
1219 error_message(ret
)));
1223 if (krberror
.e_data
== NULL
|| krberror
.e_data
->data
== NULL
) {
1224 ret
= (krb5_error_code
) krberror
.error_code
;
1225 got_error_code
= True
;
1228 smb_krb5_free_error(context
, &krberror
);
1232 krb5_error
*krberror
;
1234 if ((ret
= krb5_rd_error(context
, packet
, &krberror
))) {
1235 DEBUG(10,("handle_krberror_packet: krb5_rd_error failed with: %s\n",
1236 error_message(ret
)));
1240 if (krberror
->e_data
.data
== NULL
) {
1241 #if defined(ERROR_TABLE_BASE_krb5)
1242 ret
= ERROR_TABLE_BASE_krb5
+ (krb5_error_code
) krberror
->error
;
1244 ret
= (krb5_error_code
)krberror
->error
;
1246 got_error_code
= True
;
1248 smb_krb5_free_error(context
, krberror
);
1251 if (got_error_code
) {
1252 DEBUG(5,("handle_krberror_packet: got KERBERR from kpasswd: %s (%d)\n",
1253 error_message(ret
), ret
));
1258 krb5_error_code
smb_krb5_get_init_creds_opt_alloc(krb5_context context
,
1259 krb5_get_init_creds_opt
**opt
)
1261 /* Heimdal or modern MIT version */
1262 return krb5_get_init_creds_opt_alloc(context
, opt
);
1265 void smb_krb5_get_init_creds_opt_free(krb5_context context
,
1266 krb5_get_init_creds_opt
*opt
)
1268 /* Modern MIT or Heimdal version */
1269 krb5_get_init_creds_opt_free(context
, opt
);
1272 krb5_enctype
smb_get_enctype_from_kt_entry(krb5_keytab_entry
*kt_entry
)
1274 return KRB5_KEY_TYPE(KRB5_KT_KEY(kt_entry
));
1278 /* caller needs to free etype_s */
1279 krb5_error_code
smb_krb5_enctype_to_string(krb5_context context
,
1280 krb5_enctype enctype
,
1283 #ifdef HAVE_KRB5_ENCTYPE_TO_STRING_WITH_KRB5_CONTEXT_ARG
1284 return krb5_enctype_to_string(context
, enctype
, etype_s
); /* Heimdal */
1285 #elif defined(HAVE_KRB5_ENCTYPE_TO_STRING_WITH_SIZE_T_ARG)
1287 krb5_error_code ret
= krb5_enctype_to_string(enctype
, buf
, 256); /* MIT */
1291 *etype_s
= SMB_STRDUP(buf
);
1297 #error UNKNOWN_KRB5_ENCTYPE_TO_STRING_FUNCTION
1301 krb5_error_code
smb_krb5_mk_error(krb5_context context
,
1302 krb5_error_code error_code
,
1303 const krb5_principal server
,
1306 #ifdef HAVE_SHORT_KRB5_MK_ERROR_INTERFACE /* MIT */
1308 * The MIT interface is *terrible*.
1309 * We have to construct this ourselves...
1313 memset(&e
, 0, sizeof(e
));
1314 krb5_us_timeofday(context
, &e
.stime
, &e
.susec
);
1316 #if defined(krb5_err_base)
1317 e
.error
= error_code
- krb5_err_base
;
1318 #elif defined(ERROR_TABLE_BASE_krb5)
1319 e
.error
= error_code
- ERROR_TABLE_BASE_krb5
;
1321 e
.error
= error_code
; /* Almost certainly wrong, but what can we do... ? */
1324 return krb5_mk_error(context
, &e
, reply
);
1325 #else /* Heimdal. */
1326 return krb5_mk_error(context
,
1338 /**********************************************************************
1339 * Open a krb5 keytab with flags, handles readonly or readwrite access and
1340 * allows to process non-default keytab names.
1341 * @param context krb5_context
1342 * @param keytab_name_req string
1343 * @param write_access bool if writable keytab is required
1344 * @param krb5_keytab pointer to krb5_keytab (close with krb5_kt_close())
1345 * @return krb5_error_code
1346 **********************************************************************/
1348 /* This MAX_NAME_LEN is a constant defined in krb5.h */
1349 #ifndef MAX_KEYTAB_NAME_LEN
1350 #define MAX_KEYTAB_NAME_LEN 1100
1353 krb5_error_code
smb_krb5_open_keytab(krb5_context context
,
1354 const char *keytab_name_req
,
1356 krb5_keytab
*keytab
)
1358 krb5_error_code ret
= 0;
1359 TALLOC_CTX
*mem_ctx
;
1360 char keytab_string
[MAX_KEYTAB_NAME_LEN
];
1361 char *kt_str
= NULL
;
1362 bool found_valid_name
= False
;
1363 const char *pragma
= "FILE";
1364 const char *tmp
= NULL
;
1366 if (!write_access
&& !keytab_name_req
) {
1367 /* caller just wants to read the default keytab readonly, so be it */
1368 return krb5_kt_default(context
, keytab
);
1371 mem_ctx
= talloc_init("smb_krb5_open_keytab");
1376 #ifdef HAVE_WRFILE_KEYTAB
1382 if (keytab_name_req
) {
1384 if (strlen(keytab_name_req
) > MAX_KEYTAB_NAME_LEN
) {
1385 ret
= KRB5_CONFIG_NOTENUFSPACE
;
1389 if ((strncmp(keytab_name_req
, "WRFILE:/", 8) == 0) ||
1390 (strncmp(keytab_name_req
, "FILE:/", 6) == 0)) {
1391 tmp
= keytab_name_req
;
1395 if (keytab_name_req
[0] != '/') {
1396 ret
= KRB5_KT_BADNAME
;
1400 tmp
= talloc_asprintf(mem_ctx
, "%s:%s", pragma
, keytab_name_req
);
1409 /* we need to handle more complex keytab_strings, like:
1410 * "ANY:FILE:/etc/krb5.keytab,krb4:/etc/srvtab" */
1412 ret
= krb5_kt_default_name(context
, &keytab_string
[0], MAX_KEYTAB_NAME_LEN
- 2);
1417 DEBUG(10,("smb_krb5_open_keytab: krb5_kt_default_name returned %s\n", keytab_string
));
1419 tmp
= talloc_strdup(mem_ctx
, keytab_string
);
1425 if (strncmp(tmp
, "ANY:", 4) == 0) {
1429 memset(&keytab_string
, '\0', sizeof(keytab_string
));
1431 while (next_token_talloc(mem_ctx
, &tmp
, &kt_str
, ",")) {
1432 if (strncmp(kt_str
, "WRFILE:", 7) == 0) {
1433 found_valid_name
= True
;
1438 if (strncmp(kt_str
, "FILE:", 5) == 0) {
1439 found_valid_name
= True
;
1444 if (tmp
[0] == '/') {
1445 /* Treat as a FILE: keytab definition. */
1446 found_valid_name
= true;
1449 if (found_valid_name
) {
1450 if (tmp
[0] != '/') {
1451 ret
= KRB5_KT_BADNAME
;
1455 tmp
= talloc_asprintf(mem_ctx
, "%s:%s", pragma
, tmp
);
1464 if (!found_valid_name
) {
1465 ret
= KRB5_KT_UNKNOWN_TYPE
;
1470 DEBUG(10,("smb_krb5_open_keytab: resolving: %s\n", tmp
));
1471 ret
= krb5_kt_resolve(context
, tmp
, keytab
);
1474 TALLOC_FREE(mem_ctx
);
1478 krb5_error_code
smb_krb5_keytab_name(TALLOC_CTX
*mem_ctx
,
1479 krb5_context context
,
1481 const char **keytab_name
)
1483 char keytab_string
[MAX_KEYTAB_NAME_LEN
];
1484 krb5_error_code ret
= 0;
1486 ret
= krb5_kt_get_name(context
, keytab
,
1487 keytab_string
, MAX_KEYTAB_NAME_LEN
- 2);
1492 *keytab_name
= talloc_strdup(mem_ctx
, keytab_string
);
1493 if (!*keytab_name
) {
1500 #if defined(HAVE_KRB5_GET_CREDS_OPT_SET_IMPERSONATE) && \
1501 defined(HAVE_KRB5_GET_CREDS_OPT_ALLOC) && \
1502 defined(HAVE_KRB5_GET_CREDS)
1503 static krb5_error_code
smb_krb5_get_credentials_for_user_opt(krb5_context context
,
1506 krb5_principal server
,
1507 krb5_principal impersonate_princ
,
1508 krb5_creds
**out_creds
)
1510 krb5_error_code ret
;
1511 krb5_get_creds_opt opt
;
1513 ret
= krb5_get_creds_opt_alloc(context
, &opt
);
1517 krb5_get_creds_opt_add_options(context
, opt
, KRB5_GC_FORWARDABLE
);
1519 if (impersonate_princ
) {
1520 ret
= krb5_get_creds_opt_set_impersonate(context
, opt
,
1527 ret
= krb5_get_creds(context
, opt
, ccache
, server
, out_creds
);
1534 krb5_get_creds_opt_free(context
, opt
);
1538 #endif /* HAVE_KRB5_GET_CREDS_OPT_SET_IMPERSONATE */
1540 #ifdef HAVE_KRB5_GET_CREDENTIALS_FOR_USER
1541 static krb5_error_code
smb_krb5_get_credentials_for_user(krb5_context context
,
1544 krb5_principal server
,
1545 krb5_principal impersonate_princ
,
1546 krb5_creds
**out_creds
)
1548 krb5_error_code ret
;
1549 krb5_creds in_creds
;
1551 #if !HAVE_DECL_KRB5_GET_CREDENTIALS_FOR_USER
1552 krb5_error_code KRB5_CALLCONV
1553 krb5_get_credentials_for_user(krb5_context context
, krb5_flags options
,
1554 krb5_ccache ccache
, krb5_creds
*in_creds
,
1555 krb5_data
*subject_cert
,
1556 krb5_creds
**out_creds
);
1557 #endif /* !HAVE_DECL_KRB5_GET_CREDENTIALS_FOR_USER */
1559 ZERO_STRUCT(in_creds
);
1561 if (impersonate_princ
) {
1563 in_creds
.server
= me
;
1564 in_creds
.client
= impersonate_princ
;
1566 ret
= krb5_get_credentials_for_user(context
,
1567 0, /* krb5_flags options */
1570 NULL
, /* krb5_data *subject_cert */
1573 in_creds
.client
= me
;
1574 in_creds
.server
= server
;
1576 ret
= krb5_get_credentials(context
, 0, ccache
,
1577 &in_creds
, out_creds
);
1582 #endif /* HAVE_KRB5_GET_CREDENTIALS_FOR_USER */
1585 * smb_krb5_get_credentials
1587 * @brief Get krb5 credentials for a server
1589 * @param[in] context An initialized krb5_context
1590 * @param[in] ccache An initialized krb5_ccache
1591 * @param[in] me The krb5_principal of the caller
1592 * @param[in] server The krb5_principal of the requested service
1593 * @param[in] impersonate_princ The krb5_principal of a user to impersonate as (optional)
1594 * @param[out] out_creds The returned krb5_creds structure
1595 * @return krb5_error_code
1598 krb5_error_code
smb_krb5_get_credentials(krb5_context context
,
1601 krb5_principal server
,
1602 krb5_principal impersonate_princ
,
1603 krb5_creds
**out_creds
)
1605 krb5_error_code ret
;
1606 krb5_creds
*creds
= NULL
;
1610 if (impersonate_princ
) {
1611 #ifdef HAVE_KRB5_GET_CREDS_OPT_SET_IMPERSONATE /* Heimdal */
1612 ret
= smb_krb5_get_credentials_for_user_opt(context
, ccache
, me
, server
, impersonate_princ
, &creds
);
1613 #elif defined(HAVE_KRB5_GET_CREDENTIALS_FOR_USER) /* MIT */
1614 ret
= smb_krb5_get_credentials_for_user(context
, ccache
, me
, server
, impersonate_princ
, &creds
);
1619 krb5_creds in_creds
;
1621 ZERO_STRUCT(in_creds
);
1623 in_creds
.client
= me
;
1624 in_creds
.server
= server
;
1626 ret
= krb5_get_credentials(context
, 0, ccache
,
1639 krb5_free_creds(context
, creds
);
1646 * smb_krb5_get_creds
1648 * @brief Get krb5 credentials for a server
1650 * @param[in] server_s The string name of the service
1651 * @param[in] time_offset The offset to the KDCs time in seconds (optional)
1652 * @param[in] cc The krb5 credential cache string name (optional)
1653 * @param[in] impersonate_princ_s The string principal name to impersonate (optional)
1654 * @param[out] creds_p The returned krb5_creds structure
1655 * @return krb5_error_code
1658 krb5_error_code
smb_krb5_get_creds(const char *server_s
,
1661 const char *impersonate_princ_s
,
1662 krb5_creds
**creds_p
)
1664 krb5_error_code ret
;
1665 krb5_context context
= NULL
;
1666 krb5_principal me
= NULL
;
1667 krb5_principal server
= NULL
;
1668 krb5_principal impersonate_princ
= NULL
;
1669 krb5_creds
*creds
= NULL
;
1670 krb5_ccache ccache
= NULL
;
1674 initialize_krb5_error_table();
1675 ret
= krb5_init_context(&context
);
1680 if (time_offset
!= 0) {
1681 krb5_set_real_time(context
, time(NULL
) + time_offset
, 0);
1684 ret
= krb5_cc_resolve(context
, cc
? cc
:
1685 krb5_cc_default_name(context
), &ccache
);
1690 ret
= krb5_cc_get_principal(context
, ccache
, &me
);
1695 ret
= smb_krb5_parse_name(context
, server_s
, &server
);
1700 if (impersonate_princ_s
) {
1701 ret
= smb_krb5_parse_name(context
, impersonate_princ_s
,
1702 &impersonate_princ
);
1708 ret
= smb_krb5_get_credentials(context
, ccache
,
1709 me
, server
, impersonate_princ
,
1715 ret
= krb5_cc_store_cred(context
, ccache
, creds
);
1724 DEBUG(1,("smb_krb5_get_creds: got ticket for %s\n",
1727 if (impersonate_princ_s
) {
1728 char *client
= NULL
;
1730 ret
= smb_krb5_unparse_name(talloc_tos(), context
, creds
->client
, &client
);
1734 DEBUGADD(1,("smb_krb5_get_creds: using S4U2SELF impersonation as %s\n",
1736 TALLOC_FREE(client
);
1745 krb5_free_creds(context
, creds
);
1748 krb5_free_principal(context
, server
);
1751 krb5_free_principal(context
, me
);
1753 if (impersonate_princ
) {
1754 krb5_free_principal(context
, impersonate_princ
);
1757 krb5_cc_close(context
, ccache
);
1759 krb5_free_context(context
);
1765 * smb_krb5_principal_get_realm
1767 * @brief Get realm of a principal
1769 * @param[in] context The krb5_context
1770 * @param[in] principal The principal
1771 * @return pointer to the realm
1775 char *smb_krb5_principal_get_realm(krb5_context context
,
1776 krb5_principal principal
)
1778 #ifdef HAVE_KRB5_PRINCIPAL_GET_REALM /* Heimdal */
1779 return discard_const_p(char, krb5_principal_get_realm(context
, principal
));
1780 #elif defined(krb5_princ_realm) /* MIT */
1782 realm
= krb5_princ_realm(context
, principal
);
1783 return discard_const_p(char, realm
->data
);
1789 #else /* HAVE_KRB5 */
1790 /* this saves a few linking headaches */
1791 int cli_krb5_get_ticket(TALLOC_CTX
*mem_ctx
,
1792 const char *principal
, time_t time_offset
,
1793 DATA_BLOB
*ticket
, DATA_BLOB
*session_key_krb5
,
1794 uint32_t extra_ap_opts
,
1795 const char *ccname
, time_t *tgs_expire
,
1796 const char *impersonate_princ_s
)
1798 DEBUG(0,("NO KERBEROS SUPPORT\n"));
1802 bool unwrap_pac(TALLOC_CTX
*mem_ctx
, DATA_BLOB
*auth_data
, DATA_BLOB
*unwrapped_pac_data
)
1804 DEBUG(0,("NO KERBEROS SUPPORT\n"));
1808 #endif /* HAVE_KRB5 */