2 * Copyright (c) 1997-2007 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 #define MAX_TIME ((time_t)((1U << 31) - 1))
41 _kdc_fix_time(time_t **t
)
47 if(**t
== 0) **t
= MAX_TIME
; /* fix for old clients */
51 realloc_method_data(METHOD_DATA
*md
)
54 pa
= realloc(md
->val
, (md
->len
+ 1) * sizeof(*md
->val
));
63 set_salt_padata (METHOD_DATA
*md
, Salt
*salt
)
66 realloc_method_data(md
);
67 md
->val
[md
->len
- 1].padata_type
= salt
->type
;
68 der_copy_octet_string(&salt
->salt
,
69 &md
->val
[md
->len
- 1].padata_value
);
74 _kdc_find_padata(const KDC_REQ
*req
, int *start
, int type
)
76 if (req
->padata
== NULL
)
79 while(*start
< req
->padata
->len
){
81 if(req
->padata
->val
[*start
- 1].padata_type
== type
)
82 return &req
->padata
->val
[*start
- 1];
88 * This is a hack to allow predefined weak services, like afs to
89 * still use weak types
93 _kdc_is_weak_exception(krb5_principal principal
, krb5_enctype etype
)
95 if (principal
->name
.name_string
.len
> 0 &&
96 strcmp(principal
->name
.name_string
.val
[0], "afs") == 0 &&
97 (etype
== ETYPE_DES_CBC_CRC
98 || etype
== ETYPE_DES_CBC_MD4
99 || etype
== ETYPE_DES_CBC_MD5
))
106 * Detect if `key' is the using the the precomputed `default_salt'.
110 is_default_salt_p(const krb5_salt
*default_salt
, const Key
*key
)
112 if (key
->salt
== NULL
)
114 if (default_salt
->salttype
!= key
->salt
->type
)
116 if (krb5_data_cmp(&default_salt
->saltvalue
, &key
->salt
->salt
))
122 * return the first appropriate key of `princ' in `ret_key'. Look for
123 * all the etypes in (`etypes', `len'), stopping as soon as we find
124 * one, but preferring one that has default salt
128 _kdc_find_etype(krb5_context context
, const hdb_entry_ex
*princ
,
129 krb5_enctype
*etypes
, unsigned len
,
130 Key
**ret_key
, krb5_enctype
*ret_etype
)
133 krb5_error_code ret
= KRB5KDC_ERR_ETYPE_NOSUPP
;
136 krb5_get_pw_salt (context
, princ
->entry
.principal
, &def_salt
);
138 for(i
= 0; ret
!= 0 && i
< len
; i
++) {
141 if (krb5_enctype_valid(context
, etypes
[i
]) != 0 &&
142 !_kdc_is_weak_exception(princ
->entry
.principal
, etypes
[i
]))
145 while (hdb_next_enctype2key(context
, &princ
->entry
, etypes
[i
], &key
) == 0) {
146 if (key
->key
.keyvalue
.length
== 0) {
147 ret
= KRB5KDC_ERR_NULL_KEY
;
151 *ret_etype
= etypes
[i
];
153 if (is_default_salt_p(&def_salt
, key
)) {
154 krb5_free_salt (context
, def_salt
);
159 krb5_free_salt (context
, def_salt
);
164 _kdc_make_anonymous_principalname (PrincipalName
*pn
)
166 pn
->name_type
= KRB5_NT_PRINCIPAL
;
167 pn
->name_string
.len
= 1;
168 pn
->name_string
.val
= malloc(sizeof(*pn
->name_string
.val
));
169 if (pn
->name_string
.val
== NULL
)
171 pn
->name_string
.val
[0] = strdup("anonymous");
172 if (pn
->name_string
.val
[0] == NULL
) {
173 free(pn
->name_string
.val
);
174 pn
->name_string
.val
= NULL
;
181 _kdc_log_timestamp(krb5_context context
,
182 krb5_kdc_configuration
*config
,
184 KerberosTime authtime
, KerberosTime
*starttime
,
185 KerberosTime endtime
, KerberosTime
*renew_till
)
187 char authtime_str
[100], starttime_str
[100],
188 endtime_str
[100], renewtime_str
[100];
190 krb5_format_time(context
, authtime
,
191 authtime_str
, sizeof(authtime_str
), TRUE
);
193 krb5_format_time(context
, *starttime
,
194 starttime_str
, sizeof(starttime_str
), TRUE
);
196 strlcpy(starttime_str
, "unset", sizeof(starttime_str
));
197 krb5_format_time(context
, endtime
,
198 endtime_str
, sizeof(endtime_str
), TRUE
);
200 krb5_format_time(context
, *renew_till
,
201 renewtime_str
, sizeof(renewtime_str
), TRUE
);
203 strlcpy(renewtime_str
, "unset", sizeof(renewtime_str
));
205 kdc_log(context
, config
, 5,
206 "%s authtime: %s starttime: %s endtime: %s renew till: %s",
207 type
, authtime_str
, starttime_str
, endtime_str
, renewtime_str
);
211 log_patypes(krb5_context context
,
212 krb5_kdc_configuration
*config
,
215 struct rk_strpool
*p
= NULL
;
219 for (i
= 0; i
< padata
->len
; i
++) {
220 switch(padata
->val
[i
].padata_type
) {
221 case KRB5_PADATA_PK_AS_REQ
:
222 p
= rk_strpoolprintf(p
, "PK-INIT(ietf)");
224 case KRB5_PADATA_PK_AS_REQ_WIN
:
225 p
= rk_strpoolprintf(p
, "PK-INIT(win2k)");
227 case KRB5_PADATA_PA_PK_OCSP_RESPONSE
:
228 p
= rk_strpoolprintf(p
, "OCSP");
230 case KRB5_PADATA_ENC_TIMESTAMP
:
231 p
= rk_strpoolprintf(p
, "encrypted-timestamp");
234 p
= rk_strpoolprintf(p
, "%d", padata
->val
[i
].padata_type
);
237 if (p
&& i
+ 1 < padata
->len
)
238 p
= rk_strpoolprintf(p
, ", ");
240 kdc_log(context
, config
, 0, "out of memory");
245 p
= rk_strpoolprintf(p
, "none");
247 str
= rk_strpoolcollect(p
);
248 kdc_log(context
, config
, 0, "Client sent patypes: %s", str
);
258 _kdc_encode_reply(krb5_context context
,
259 krb5_kdc_configuration
*config
,
260 KDC_REP
*rep
, const EncTicketPart
*et
, EncKDCRepPart
*ek
,
262 int skvno
, const EncryptionKey
*skey
,
263 int ckvno
, const EncryptionKey
*reply_key
,
274 ASN1_MALLOC_ENCODE(EncTicketPart
, buf
, buf_size
, et
, &len
, ret
);
276 kdc_log(context
, config
, 0, "Failed to encode ticket: %s",
277 krb5_get_err_text(context
, ret
));
280 if(buf_size
!= len
) {
282 kdc_log(context
, config
, 0, "Internal error in ASN.1 encoder");
283 *e_text
= "KDC internal error";
284 return KRB5KRB_ERR_GENERIC
;
287 ret
= krb5_crypto_init(context
, skey
, etype
, &crypto
);
290 kdc_log(context
, config
, 0, "krb5_crypto_init failed: %s",
291 krb5_get_err_text(context
, ret
));
295 ret
= krb5_encrypt_EncryptedData(context
,
301 &rep
->ticket
.enc_part
);
303 krb5_crypto_destroy(context
, crypto
);
305 kdc_log(context
, config
, 0, "Failed to encrypt data: %s",
306 krb5_get_err_text(context
, ret
));
310 if(rep
->msg_type
== krb_as_rep
&& !config
->encode_as_rep_as_tgs_rep
)
311 ASN1_MALLOC_ENCODE(EncASRepPart
, buf
, buf_size
, ek
, &len
, ret
);
313 ASN1_MALLOC_ENCODE(EncTGSRepPart
, buf
, buf_size
, ek
, &len
, ret
);
315 kdc_log(context
, config
, 0, "Failed to encode KDC-REP: %s",
316 krb5_get_err_text(context
, ret
));
319 if(buf_size
!= len
) {
321 kdc_log(context
, config
, 0, "Internal error in ASN.1 encoder");
322 *e_text
= "KDC internal error";
323 return KRB5KRB_ERR_GENERIC
;
325 ret
= krb5_crypto_init(context
, reply_key
, 0, &crypto
);
328 kdc_log(context
, config
, 0, "krb5_crypto_init failed: %s",
329 krb5_get_err_text(context
, ret
));
332 if(rep
->msg_type
== krb_as_rep
) {
333 krb5_encrypt_EncryptedData(context
,
335 KRB5_KU_AS_REP_ENC_PART
,
341 ASN1_MALLOC_ENCODE(AS_REP
, buf
, buf_size
, rep
, &len
, ret
);
343 krb5_encrypt_EncryptedData(context
,
345 rk_is_subkey
? KRB5_KU_TGS_REP_ENC_PART_SUB_KEY
: KRB5_KU_TGS_REP_ENC_PART_SESSION
,
351 ASN1_MALLOC_ENCODE(TGS_REP
, buf
, buf_size
, rep
, &len
, ret
);
353 krb5_crypto_destroy(context
, crypto
);
355 kdc_log(context
, config
, 0, "Failed to encode KDC-REP: %s",
356 krb5_get_err_text(context
, ret
));
359 if(buf_size
!= len
) {
361 kdc_log(context
, config
, 0, "Internal error in ASN.1 encoder");
362 *e_text
= "KDC internal error";
363 return KRB5KRB_ERR_GENERIC
;
366 reply
->length
= buf_size
;
371 * Return 1 if the client have only older enctypes, this is for
372 * determining if the server should send ETYPE_INFO2 or not.
376 older_enctype(krb5_enctype enctype
)
379 case ETYPE_DES_CBC_CRC
:
380 case ETYPE_DES_CBC_MD4
:
381 case ETYPE_DES_CBC_MD5
:
382 case ETYPE_DES3_CBC_SHA1
:
383 case ETYPE_ARCFOUR_HMAC_MD5
:
384 case ETYPE_ARCFOUR_HMAC_MD5_56
:
386 * The following three is "old" windows enctypes and is needed for
387 * windows 2000 hosts.
389 case ETYPE_ARCFOUR_MD4
:
390 case ETYPE_ARCFOUR_HMAC_OLD
:
391 case ETYPE_ARCFOUR_HMAC_OLD_EXP
:
402 static krb5_error_code
403 make_etype_info_entry(krb5_context context
, ETYPE_INFO_ENTRY
*ent
, Key
*key
)
405 ent
->etype
= key
->key
.keytype
;
408 ALLOC(ent
->salttype
);
410 if(key
->salt
->type
== hdb_pw_salt
)
411 *ent
->salttype
= 0; /* or 1? or NULL? */
412 else if(key
->salt
->type
== hdb_afs3_salt
)
415 kdc_log(context
, config
, 0, "unknown salt-type: %d",
417 return KRB5KRB_ERR_GENERIC
;
419 /* according to `the specs', we can't send a salt if
420 we have AFS3 salted key, but that requires that you
421 *know* what cell you are using (e.g by assuming
422 that the cell is the same as the realm in lower
425 ALLOC(ent
->salttype
);
426 *ent
->salttype
= key
->salt
->type
;
429 * We shouldn't sent salttype since it is incompatible with the
430 * specification and it breaks windows clients. The afs
431 * salting problem is solved by using KRB5-PADATA-AFS3-SALT
432 * implemented in Heimdal 0.7 and later.
434 ent
->salttype
= NULL
;
436 krb5_copy_data(context
, &key
->salt
->salt
,
439 /* we return no salt type at all, as that should indicate
440 * the default salt type and make everybody happy. some
441 * systems (like w2k) dislike being told the salt type
444 ent
->salttype
= NULL
;
450 static krb5_error_code
451 get_pa_etype_info(krb5_context context
,
452 krb5_kdc_configuration
*config
,
453 METHOD_DATA
*md
, Key
*ckey
)
455 krb5_error_code ret
= 0;
462 pa
.val
= calloc(1, sizeof(pa
.val
[0]));
466 ret
= make_etype_info_entry(context
, &pa
.val
[0], ckey
);
468 free_ETYPE_INFO(&pa
);
472 ASN1_MALLOC_ENCODE(ETYPE_INFO
, buf
, len
, &pa
, &len
, ret
);
473 free_ETYPE_INFO(&pa
);
476 ret
= realloc_method_data(md
);
481 md
->val
[md
->len
- 1].padata_type
= KRB5_PADATA_ETYPE_INFO
;
482 md
->val
[md
->len
- 1].padata_value
.length
= len
;
483 md
->val
[md
->len
- 1].padata_value
.data
= buf
;
491 extern int _krb5_AES_string_to_default_iterator
;
493 static krb5_error_code
494 make_etype_info2_entry(ETYPE_INFO2_ENTRY
*ent
, Key
*key
)
496 ent
->etype
= key
->key
.keytype
;
499 if (ent
->salt
== NULL
)
501 *ent
->salt
= malloc(key
->salt
->salt
.length
+ 1);
502 if (*ent
->salt
== NULL
) {
507 memcpy(*ent
->salt
, key
->salt
->salt
.data
, key
->salt
->salt
.length
);
508 (*ent
->salt
)[key
->salt
->salt
.length
] = '\0';
512 ent
->s2kparams
= NULL
;
514 switch (key
->key
.keytype
) {
515 case ETYPE_AES128_CTS_HMAC_SHA1_96
:
516 case ETYPE_AES256_CTS_HMAC_SHA1_96
:
517 ALLOC(ent
->s2kparams
);
518 if (ent
->s2kparams
== NULL
)
520 ent
->s2kparams
->length
= 4;
521 ent
->s2kparams
->data
= malloc(ent
->s2kparams
->length
);
522 if (ent
->s2kparams
->data
== NULL
) {
523 free(ent
->s2kparams
);
524 ent
->s2kparams
= NULL
;
527 _krb5_put_int(ent
->s2kparams
->data
,
528 _krb5_AES_string_to_default_iterator
,
529 ent
->s2kparams
->length
);
531 case ETYPE_DES_CBC_CRC
:
532 case ETYPE_DES_CBC_MD4
:
533 case ETYPE_DES_CBC_MD5
:
534 /* Check if this was a AFS3 salted key */
535 if(key
->salt
&& key
->salt
->type
== hdb_afs3_salt
){
536 ALLOC(ent
->s2kparams
);
537 if (ent
->s2kparams
== NULL
)
539 ent
->s2kparams
->length
= 1;
540 ent
->s2kparams
->data
= malloc(ent
->s2kparams
->length
);
541 if (ent
->s2kparams
->data
== NULL
) {
542 free(ent
->s2kparams
);
543 ent
->s2kparams
= NULL
;
546 _krb5_put_int(ent
->s2kparams
->data
,
548 ent
->s2kparams
->length
);
558 * Return an ETYPE-INFO2. Enctypes are storted the same way as in the
559 * database (client supported enctypes first, then the unsupported
563 static krb5_error_code
564 get_pa_etype_info2(krb5_context context
,
565 krb5_kdc_configuration
*config
,
566 METHOD_DATA
*md
, Key
*ckey
)
568 krb5_error_code ret
= 0;
574 pa
.val
= calloc(1, sizeof(pa
.val
[0]));
578 ret
= make_etype_info2_entry(&pa
.val
[0], ckey
);
580 free_ETYPE_INFO2(&pa
);
584 ASN1_MALLOC_ENCODE(ETYPE_INFO2
, buf
, len
, &pa
, &len
, ret
);
585 free_ETYPE_INFO2(&pa
);
588 ret
= realloc_method_data(md
);
593 md
->val
[md
->len
- 1].padata_type
= KRB5_PADATA_ETYPE_INFO2
;
594 md
->val
[md
->len
- 1].padata_value
.length
= len
;
595 md
->val
[md
->len
- 1].padata_value
.data
= buf
;
604 log_as_req(krb5_context context
,
605 krb5_kdc_configuration
*config
,
608 const KDC_REQ_BODY
*b
)
611 struct rk_strpool
*p
;
615 p
= rk_strpoolprintf(NULL
, "%s", "Client supported enctypes: ");
617 for (i
= 0; i
< b
->etype
.len
; i
++) {
618 ret
= krb5_enctype_to_string(context
, b
->etype
.val
[i
], &str
);
620 p
= rk_strpoolprintf(p
, "%s", str
);
623 p
= rk_strpoolprintf(p
, "%d", b
->etype
.val
[i
]);
624 if (p
&& i
+ 1 < b
->etype
.len
)
625 p
= rk_strpoolprintf(p
, ", ");
627 kdc_log(context
, config
, 0, "out of memory");
632 p
= rk_strpoolprintf(p
, "no encryption types");
638 ret
= krb5_enctype_to_string(context
, cetype
, &cet
);
640 ret
= krb5_enctype_to_string(context
, setype
, &set
);
642 p
= rk_strpoolprintf(p
, ", using %s/%s", cet
, set
);
648 p
= rk_strpoolprintf(p
, ", using enctypes %d/%d",
652 str
= rk_strpoolcollect(p
);
653 kdc_log(context
, config
, 0, "%s", str
);
658 unparse_flags(KDCOptions2int(b
->kdc_options
), asn1_KDCOptions_units(),
659 fixedstr
, sizeof(fixedstr
));
661 kdc_log(context
, config
, 0, "Requested flags: %s", fixedstr
);
666 * verify the flags on `client' and `server', returning 0
667 * if they are OK and generating an error messages and returning
668 * and error code otherwise.
672 kdc_check_flags(krb5_context context
,
673 krb5_kdc_configuration
*config
,
674 hdb_entry_ex
*client_ex
, const char *client_name
,
675 hdb_entry_ex
*server_ex
, const char *server_name
,
676 krb5_boolean is_as_req
)
678 if(client_ex
!= NULL
) {
679 hdb_entry
*client
= &client_ex
->entry
;
682 if (client
->flags
.locked_out
) {
683 kdc_log(context
, config
, 0,
684 "Client (%s) is locked out", client_name
);
685 return KRB5KDC_ERR_POLICY
;
688 if (client
->flags
.invalid
) {
689 kdc_log(context
, config
, 0,
690 "Client (%s) has invalid bit set", client_name
);
691 return KRB5KDC_ERR_POLICY
;
694 if(!client
->flags
.client
){
695 kdc_log(context
, config
, 0,
696 "Principal may not act as client -- %s", client_name
);
697 return KRB5KDC_ERR_POLICY
;
700 if (client
->valid_start
&& *client
->valid_start
> kdc_time
) {
701 char starttime_str
[100];
702 krb5_format_time(context
, *client
->valid_start
,
703 starttime_str
, sizeof(starttime_str
), TRUE
);
704 kdc_log(context
, config
, 0,
705 "Client not yet valid until %s -- %s",
706 starttime_str
, client_name
);
707 return KRB5KDC_ERR_CLIENT_NOTYET
;
710 if (client
->valid_end
&& *client
->valid_end
< kdc_time
) {
711 char endtime_str
[100];
712 krb5_format_time(context
, *client
->valid_end
,
713 endtime_str
, sizeof(endtime_str
), TRUE
);
714 kdc_log(context
, config
, 0,
715 "Client expired at %s -- %s",
716 endtime_str
, client_name
);
717 return KRB5KDC_ERR_NAME_EXP
;
720 if (client
->pw_end
&& *client
->pw_end
< kdc_time
721 && (server_ex
== NULL
|| !server_ex
->entry
.flags
.change_pw
)) {
723 krb5_format_time(context
, *client
->pw_end
,
724 pwend_str
, sizeof(pwend_str
), TRUE
);
725 kdc_log(context
, config
, 0,
726 "Client's key has expired at %s -- %s",
727 pwend_str
, client_name
);
728 return KRB5KDC_ERR_KEY_EXPIRED
;
734 if (server_ex
!= NULL
) {
735 hdb_entry
*server
= &server_ex
->entry
;
737 if (server
->flags
.locked_out
) {
738 kdc_log(context
, config
, 0,
739 "Client server locked out -- %s", server_name
);
740 return KRB5KDC_ERR_POLICY
;
742 if (server
->flags
.invalid
) {
743 kdc_log(context
, config
, 0,
744 "Server has invalid flag set -- %s", server_name
);
745 return KRB5KDC_ERR_POLICY
;
748 if(!server
->flags
.server
){
749 kdc_log(context
, config
, 0,
750 "Principal may not act as server -- %s", server_name
);
751 return KRB5KDC_ERR_POLICY
;
754 if(!is_as_req
&& server
->flags
.initial
) {
755 kdc_log(context
, config
, 0,
756 "AS-REQ is required for server -- %s", server_name
);
757 return KRB5KDC_ERR_POLICY
;
760 if (server
->valid_start
&& *server
->valid_start
> kdc_time
) {
761 char starttime_str
[100];
762 krb5_format_time(context
, *server
->valid_start
,
763 starttime_str
, sizeof(starttime_str
), TRUE
);
764 kdc_log(context
, config
, 0,
765 "Server not yet valid until %s -- %s",
766 starttime_str
, server_name
);
767 return KRB5KDC_ERR_SERVICE_NOTYET
;
770 if (server
->valid_end
&& *server
->valid_end
< kdc_time
) {
771 char endtime_str
[100];
772 krb5_format_time(context
, *server
->valid_end
,
773 endtime_str
, sizeof(endtime_str
), TRUE
);
774 kdc_log(context
, config
, 0,
775 "Server expired at %s -- %s",
776 endtime_str
, server_name
);
777 return KRB5KDC_ERR_SERVICE_EXP
;
780 if (server
->pw_end
&& *server
->pw_end
< kdc_time
) {
782 krb5_format_time(context
, *server
->pw_end
,
783 pwend_str
, sizeof(pwend_str
), TRUE
);
784 kdc_log(context
, config
, 0,
785 "Server's key has expired at -- %s",
786 pwend_str
, server_name
);
787 return KRB5KDC_ERR_KEY_EXPIRED
;
794 * Return TRUE if `from' is part of `addresses' taking into consideration
795 * the configuration variables that tells us how strict we should be about
800 _kdc_check_addresses(krb5_context context
,
801 krb5_kdc_configuration
*config
,
802 HostAddresses
*addresses
, const struct sockaddr
*from
)
807 krb5_boolean only_netbios
= TRUE
;
810 if(config
->check_ticket_addresses
== 0)
813 if(addresses
== NULL
)
814 return config
->allow_null_ticket_addresses
;
816 for (i
= 0; i
< addresses
->len
; ++i
) {
817 if (addresses
->val
[i
].addr_type
!= KRB5_ADDRESS_NETBIOS
) {
818 only_netbios
= FALSE
;
822 /* Windows sends it's netbios name, which I can only assume is
823 * used for the 'allowed workstations' check. This is painful,
824 * but we still want to check IP addresses if they happen to be
829 return config
->allow_null_ticket_addresses
;
831 ret
= krb5_sockaddr2address (context
, from
, &addr
);
835 result
= krb5_address_search(context
, &addr
, addresses
);
836 krb5_free_address (context
, &addr
);
845 send_pac_p(krb5_context context
, KDC_REQ
*req
)
848 PA_PAC_REQUEST pacreq
;
852 pa
= _kdc_find_padata(req
, &i
, KRB5_PADATA_PA_PAC_REQUEST
);
856 ret
= decode_PA_PAC_REQUEST(pa
->padata_value
.data
,
857 pa
->padata_value
.length
,
862 i
= pacreq
.include_pac
;
863 free_PA_PAC_REQUEST(&pacreq
);
870 _kdc_is_anonymous(krb5_context context
, krb5_principal principal
)
872 if (principal
->name
.name_type
!= KRB5_NT_WELLKNOWN
||
873 principal
->name
.name_string
.len
!= 2 ||
874 strcmp(principal
->name
.name_string
.val
[0], KRB5_WELLKNOWN_NAME
) != 0 ||
875 strcmp(principal
->name
.name_string
.val
[1], KRB5_ANON_NAME
) != 0)
885 _kdc_as_rep(krb5_context context
,
886 krb5_kdc_configuration
*config
,
888 const krb5_data
*req_buffer
,
891 struct sockaddr
*from_addr
,
894 KDC_REQ_BODY
*b
= &req
->req_body
;
896 KDCOptions f
= b
->kdc_options
;
897 hdb_entry_ex
*client
= NULL
, *server
= NULL
;
899 krb5_enctype cetype
, setype
, sessionetype
;
903 krb5_principal client_princ
= NULL
, server_princ
= NULL
;
904 char *client_name
= NULL
, *server_name
= NULL
;
905 krb5_error_code ret
= 0;
906 const char *e_text
= NULL
;
909 EncryptionKey
*reply_key
;
912 pk_client_params
*pkp
= NULL
;
915 memset(&rep
, 0, sizeof(rep
));
916 krb5_data_zero(&e_data
);
919 flags
|= HDB_F_CANON
;
921 if(b
->sname
== NULL
){
922 ret
= KRB5KRB_ERR_GENERIC
;
923 e_text
= "No server in request";
925 ret
= _krb5_principalname2krb5_principal (context
,
930 ret
= krb5_unparse_name(context
, server_princ
, &server_name
);
933 kdc_log(context
, config
, 0,
934 "AS-REQ malformed server name from %s", from
);
937 if(b
->cname
== NULL
){
938 ret
= KRB5KRB_ERR_GENERIC
;
939 e_text
= "No client in request";
941 ret
= _krb5_principalname2krb5_principal (context
,
948 ret
= krb5_unparse_name(context
, client_princ
, &client_name
);
951 kdc_log(context
, config
, 0,
952 "AS-REQ malformed client name from %s", from
);
956 kdc_log(context
, config
, 0, "AS-REQ %s from %s for %s",
957 client_name
, from
, server_name
);
963 if (_kdc_is_anonymous(context
, client_princ
)) {
964 if (!b
->kdc_options
.request_anonymous
) {
965 kdc_log(context
, config
, 0, "Anonymous ticket w/o anonymous flag");
966 ret
= KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN
;
969 } else if (b
->kdc_options
.request_anonymous
) {
970 kdc_log(context
, config
, 0,
971 "Request for a anonymous ticket with non "
972 "anonymous client name: %s", client_name
);
973 ret
= KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN
;
981 ret
= _kdc_db_fetch(context
, config
, client_princ
,
982 HDB_F_GET_CLIENT
| flags
, &clientdb
, &client
);
984 kdc_log(context
, config
, 0, "UNKNOWN -- %s: %s", client_name
,
985 krb5_get_err_text(context
, ret
));
986 ret
= KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN
;
990 ret
= _kdc_db_fetch(context
, config
, server_princ
,
991 HDB_F_GET_SERVER
|HDB_F_GET_KRBTGT
,
994 kdc_log(context
, config
, 0, "UNKNOWN -- %s: %s", server_name
,
995 krb5_get_err_text(context
, ret
));
996 ret
= KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN
;
1000 memset(&et
, 0, sizeof(et
));
1001 memset(&ek
, 0, sizeof(ek
));
1004 * Find the client key for reply encryption and pa-type salt, Pick
1005 * the client key upfront before the other keys because that is
1006 * going to affect what enctypes we are going to use in
1010 ret
= _kdc_find_etype(context
, client
, b
->etype
.val
, b
->etype
.len
,
1013 kdc_log(context
, config
, 0,
1014 "Client (%s) has no support for etypes", client_name
);
1019 * Pre-auth processing
1027 log_patypes(context
, config
, req
->padata
);
1030 kdc_log(context
, config
, 5,
1031 "Looking for PKINIT pa-data -- %s", client_name
);
1033 e_text
= "No PKINIT PA found";
1036 pa
= _kdc_find_padata(req
, &i
, KRB5_PADATA_PK_AS_REQ
);
1039 pa
= _kdc_find_padata(req
, &i
, KRB5_PADATA_PK_AS_REQ_WIN
);
1042 char *client_cert
= NULL
;
1044 ret
= _kdc_pk_rd_padata(context
, config
, req
, pa
, client
, &pkp
);
1046 ret
= KRB5KRB_AP_ERR_BAD_INTEGRITY
;
1047 kdc_log(context
, config
, 5,
1048 "Failed to decode PKINIT PA-DATA -- %s",
1052 if (ret
== 0 && pkp
== NULL
)
1055 ret
= _kdc_pk_check_client(context
,
1062 e_text
= "PKINIT certificate not allowed to "
1063 "impersonate principal";
1064 _kdc_pk_free_client_param(context
, pkp
);
1066 kdc_log(context
, config
, 0, "%s", e_text
);
1072 et
.flags
.pre_authent
= 1;
1073 kdc_log(context
, config
, 0,
1074 "PKINIT pre-authentication succeeded -- %s using %s",
1075 client_name
, client_cert
);
1082 kdc_log(context
, config
, 5, "Looking for ENC-TS pa-data -- %s",
1086 e_text
= "No ENC-TS found";
1087 while((pa
= _kdc_find_padata(req
, &i
, KRB5_PADATA_ENC_TIMESTAMP
))){
1091 EncryptedData enc_data
;
1097 if (b
->kdc_options
.request_anonymous
) {
1098 ret
= KRB5KRB_AP_ERR_BAD_INTEGRITY
;
1099 kdc_log(context
, config
, 0, "ENC-TS doesn't support anon");
1103 ret
= decode_EncryptedData(pa
->padata_value
.data
,
1104 pa
->padata_value
.length
,
1108 ret
= KRB5KRB_AP_ERR_BAD_INTEGRITY
;
1109 kdc_log(context
, config
, 5, "Failed to decode PA-DATA -- %s",
1114 ret
= hdb_enctype2key(context
, &client
->entry
,
1115 enc_data
.etype
, &pa_key
);
1118 e_text
= "No key matches pa-data";
1119 ret
= KRB5KDC_ERR_ETYPE_NOSUPP
;
1120 if(krb5_enctype_to_string(context
, enc_data
.etype
, &estr
))
1123 kdc_log(context
, config
, 5,
1124 "No client key matching pa-data (%d) -- %s",
1125 enc_data
.etype
, client_name
);
1127 kdc_log(context
, config
, 5,
1128 "No client key matching pa-data (%s) -- %s",
1131 free_EncryptedData(&enc_data
);
1137 ret
= krb5_crypto_init(context
, &pa_key
->key
, 0, &crypto
);
1139 kdc_log(context
, config
, 0, "krb5_crypto_init failed: %s",
1140 krb5_get_err_text(context
, ret
));
1141 free_EncryptedData(&enc_data
);
1145 ret
= krb5_decrypt_EncryptedData (context
,
1147 KRB5_KU_PA_ENC_TIMESTAMP
,
1150 krb5_crypto_destroy(context
, crypto
);
1152 * Since the user might have several keys with the same
1153 * enctype but with diffrent salting, we need to try all
1154 * the keys with the same enctype.
1157 krb5_error_code ret2
;
1158 ret2
= krb5_enctype_to_string(context
,
1159 pa_key
->key
.keytype
, &str
);
1162 kdc_log(context
, config
, 5,
1163 "Failed to decrypt PA-DATA -- %s "
1164 "(enctype %s) error %s",
1166 str
? str
: "unknown enctype",
1167 krb5_get_err_text(context
, ret
));
1170 if(hdb_next_enctype2key(context
, &client
->entry
,
1171 enc_data
.etype
, &pa_key
) == 0)
1173 e_text
= "Failed to decrypt PA-DATA";
1175 free_EncryptedData(&enc_data
);
1177 if (clientdb
->hdb_auth_status
)
1178 (clientdb
->hdb_auth_status
)(context
, clientdb
, client
, HDB_AUTH_WRONG_PASSWORD
);
1180 ret
= KRB5KDC_ERR_PREAUTH_FAILED
;
1183 free_EncryptedData(&enc_data
);
1184 ret
= decode_PA_ENC_TS_ENC(ts_data
.data
,
1188 krb5_data_free(&ts_data
);
1190 e_text
= "Failed to decode PA-ENC-TS-ENC";
1191 ret
= KRB5KDC_ERR_PREAUTH_FAILED
;
1192 kdc_log(context
, config
,
1193 5, "Failed to decode PA-ENC-TS_ENC -- %s",
1197 free_PA_ENC_TS_ENC(&p
);
1198 if (abs(kdc_time
- p
.patimestamp
) > context
->max_skew
) {
1199 char client_time
[100];
1201 krb5_format_time(context
, p
.patimestamp
,
1202 client_time
, sizeof(client_time
), TRUE
);
1204 ret
= KRB5KRB_AP_ERR_SKEW
;
1205 kdc_log(context
, config
, 0,
1206 "Too large time skew, "
1207 "client time %s is out by %u > %u seconds -- %s",
1209 (unsigned)abs(kdc_time
- p
.patimestamp
),
1214 * The following is needed to make windows clients to
1215 * retry using the timestamp in the error message, if
1216 * there is a e_text, they become unhappy.
1221 et
.flags
.pre_authent
= 1;
1223 ret
= krb5_enctype_to_string(context
,pa_key
->key
.keytype
, &str
);
1227 kdc_log(context
, config
, 2,
1228 "ENC-TS Pre-authentication succeeded -- %s using %s",
1229 client_name
, str
? str
: "unknown enctype");
1236 if(found_pa
== 0 && config
->require_preauth
)
1238 /* We come here if we found a pa-enc-timestamp, but if there
1239 was some problem with it, other than too large skew */
1240 if(found_pa
&& et
.flags
.pre_authent
== 0){
1241 kdc_log(context
, config
, 0, "%s -- %s", e_text
, client_name
);
1245 }else if (config
->require_preauth
1246 || b
->kdc_options
.request_anonymous
/* hack to force anon */
1247 || client
->entry
.flags
.require_preauth
1248 || server
->entry
.flags
.require_preauth
) {
1249 METHOD_DATA method_data
;
1255 method_data
.len
= 0;
1256 method_data
.val
= NULL
;
1258 ret
= realloc_method_data(&method_data
);
1260 free_METHOD_DATA(&method_data
);
1263 pa
= &method_data
.val
[method_data
.len
-1];
1264 pa
->padata_type
= KRB5_PADATA_ENC_TIMESTAMP
;
1265 pa
->padata_value
.length
= 0;
1266 pa
->padata_value
.data
= NULL
;
1269 ret
= realloc_method_data(&method_data
);
1271 free_METHOD_DATA(&method_data
);
1274 pa
= &method_data
.val
[method_data
.len
-1];
1275 pa
->padata_type
= KRB5_PADATA_PK_AS_REQ
;
1276 pa
->padata_value
.length
= 0;
1277 pa
->padata_value
.data
= NULL
;
1279 ret
= realloc_method_data(&method_data
);
1281 free_METHOD_DATA(&method_data
);
1284 pa
= &method_data
.val
[method_data
.len
-1];
1285 pa
->padata_type
= KRB5_PADATA_PK_AS_REQ_WIN
;
1286 pa
->padata_value
.length
= 0;
1287 pa
->padata_value
.data
= NULL
;
1291 * If there is a client key, send ETYPE_INFO{,2}
1297 * - If the client only knows about old enctypes, then send
1298 * both info replies (we send 'info' first in the list).
1299 * - If the client is 'modern', because it knows about 'new'
1300 * enctype types, then only send the 'info2' reply.
1302 * Before we send the full list of etype-info data, we pick
1303 * the client key we would have used anyway below, just pick
1307 if (older_enctype(ckey
->key
.keytype
)) {
1308 ret
= get_pa_etype_info(context
, config
,
1309 &method_data
, ckey
);
1311 free_METHOD_DATA(&method_data
);
1315 ret
= get_pa_etype_info2(context
, config
,
1316 &method_data
, ckey
);
1318 free_METHOD_DATA(&method_data
);
1323 ASN1_MALLOC_ENCODE(METHOD_DATA
, buf
, len
, &method_data
, &len
, ret
);
1324 free_METHOD_DATA(&method_data
);
1327 e_data
.length
= len
;
1328 e_text
="Need to use PA-ENC-TIMESTAMP/PA-PK-AS-REQ",
1330 ret
= KRB5KDC_ERR_PREAUTH_REQUIRED
;
1332 kdc_log(context
, config
, 0,
1333 "No preauth found, returning PREAUTH-REQUIRED -- %s",
1338 if (clientdb
->hdb_auth_status
)
1339 (clientdb
->hdb_auth_status
)(context
, clientdb
, client
,
1343 * Verify flags after the user been required to prove its identity
1344 * with in a preauth mech.
1347 ret
= _kdc_check_access(context
, config
, client
, client_name
,
1348 server
, server_name
,
1354 * Selelct the best encryption type for the KDC with out regard to
1355 * the client since the client never needs to read that data.
1358 ret
= _kdc_get_preferred_key(context
, config
,
1359 server
, server_name
,
1365 * Select a session enctype from the list of the crypto systems
1366 * supported enctype, is supported by the client and is one of the
1367 * enctype of the enctype of the krbtgt.
1369 * The later is used as a hint what enctype all KDC are supporting
1370 * to make sure a newer version of KDC wont generate a session
1371 * enctype that and older version of a KDC in the same realm can't
1374 * But if the KDC admin is paranoid and doesn't want to have "no
1375 * the best" enctypes on the krbtgt, lets save the best pick from
1376 * the client list and hope that that will work for any other
1380 const krb5_enctype
*p
;
1381 krb5_enctype clientbest
= ETYPE_NULL
;
1384 p
= krb5_kerberos_enctypes(context
);
1386 sessionetype
= ETYPE_NULL
;
1388 for (i
= 0; p
[i
] != ETYPE_NULL
&& sessionetype
== ETYPE_NULL
; i
++) {
1389 if (krb5_enctype_valid(context
, p
[i
]) != 0)
1392 for (j
= 0; j
< b
->etype
.len
&& sessionetype
== ETYPE_NULL
; j
++) {
1394 /* check with client */
1395 if (p
[i
] != b
->etype
.val
[j
])
1397 /* save best of union of { client, crypto system } */
1398 if (clientbest
== ETYPE_NULL
)
1400 /* check with krbtgt */
1401 ret
= hdb_enctype2key(context
, &server
->entry
, p
[i
], &dummy
);
1404 sessionetype
= p
[i
];
1407 /* if krbtgt had no shared keys with client, pick clients best */
1408 if (clientbest
!= ETYPE_NULL
&& sessionetype
== ETYPE_NULL
) {
1409 sessionetype
= clientbest
;
1410 } else if (sessionetype
== ETYPE_NULL
) {
1411 kdc_log(context
, config
, 0,
1412 "Client (%s) from %s has no common enctypes with KDC"
1413 "to use for the session key",
1419 log_as_req(context
, config
, cetype
, setype
, b
);
1421 if(f
.renew
|| f
.validate
|| f
.proxy
|| f
.forwarded
|| f
.enc_tkt_in_skey
1422 || (f
.request_anonymous
&& !config
->allow_anonymous
)) {
1423 ret
= KRB5KDC_ERR_BADOPTION
;
1424 kdc_log(context
, config
, 0, "Bad KDC options -- %s", client_name
);
1429 rep
.msg_type
= krb_as_rep
;
1431 ret
= copy_Realm(&client
->entry
.principal
->realm
, &rep
.crealm
);
1434 ret
= _krb5_principal2principalname(&rep
.cname
, client
->entry
.principal
);
1438 rep
.ticket
.tkt_vno
= 5;
1439 copy_Realm(&server
->entry
.principal
->realm
, &rep
.ticket
.realm
);
1440 _krb5_principal2principalname(&rep
.ticket
.sname
,
1441 server
->entry
.principal
);
1442 /* java 1.6 expects the name to be the same type, lets allow that
1443 * uncomplicated name-types. */
1444 #define CNT(sp,t) (((sp)->sname->name_type) == KRB5_NT_##t)
1445 if (CNT(b
, UNKNOWN
) || CNT(b
, PRINCIPAL
) || CNT(b
, SRV_INST
) || CNT(b
, SRV_HST
) || CNT(b
, SRV_XHST
))
1446 rep
.ticket
.sname
.name_type
= b
->sname
->name_type
;
1449 et
.flags
.initial
= 1;
1450 if(client
->entry
.flags
.forwardable
&& server
->entry
.flags
.forwardable
)
1451 et
.flags
.forwardable
= f
.forwardable
;
1452 else if (f
.forwardable
) {
1453 ret
= KRB5KDC_ERR_POLICY
;
1454 kdc_log(context
, config
, 0,
1455 "Ticket may not be forwardable -- %s", client_name
);
1458 if(client
->entry
.flags
.proxiable
&& server
->entry
.flags
.proxiable
)
1459 et
.flags
.proxiable
= f
.proxiable
;
1460 else if (f
.proxiable
) {
1461 ret
= KRB5KDC_ERR_POLICY
;
1462 kdc_log(context
, config
, 0,
1463 "Ticket may not be proxiable -- %s", client_name
);
1466 if(client
->entry
.flags
.postdate
&& server
->entry
.flags
.postdate
)
1467 et
.flags
.may_postdate
= f
.allow_postdate
;
1468 else if (f
.allow_postdate
){
1469 ret
= KRB5KDC_ERR_POLICY
;
1470 kdc_log(context
, config
, 0,
1471 "Ticket may not be postdatable -- %s", client_name
);
1475 /* check for valid set of addresses */
1476 if(!_kdc_check_addresses(context
, config
, b
->addresses
, from_addr
)) {
1477 ret
= KRB5KRB_AP_ERR_BADADDR
;
1478 kdc_log(context
, config
, 0,
1479 "Bad address list requested -- %s", client_name
);
1483 ret
= copy_PrincipalName(&rep
.cname
, &et
.cname
);
1486 ret
= copy_Realm(&rep
.crealm
, &et
.crealm
);
1494 start
= et
.authtime
= kdc_time
;
1496 if(f
.postdated
&& req
->req_body
.from
){
1497 ALLOC(et
.starttime
);
1498 start
= *et
.starttime
= *req
->req_body
.from
;
1499 et
.flags
.invalid
= 1;
1500 et
.flags
.postdated
= 1; /* XXX ??? */
1502 _kdc_fix_time(&b
->till
);
1505 /* be careful not overflowing */
1507 if(client
->entry
.max_life
)
1508 t
= start
+ min(t
- start
, *client
->entry
.max_life
);
1509 if(server
->entry
.max_life
)
1510 t
= start
+ min(t
- start
, *server
->entry
.max_life
);
1512 t
= min(t
, start
+ realm
->max_life
);
1515 if(f
.renewable_ok
&& et
.endtime
< *b
->till
){
1517 if(b
->rtime
== NULL
){
1521 if(*b
->rtime
< *b
->till
)
1522 *b
->rtime
= *b
->till
;
1524 if(f
.renewable
&& b
->rtime
){
1528 if(client
->entry
.max_renew
)
1529 t
= start
+ min(t
- start
, *client
->entry
.max_renew
);
1530 if(server
->entry
.max_renew
)
1531 t
= start
+ min(t
- start
, *server
->entry
.max_renew
);
1533 t
= min(t
, start
+ realm
->max_renew
);
1535 ALLOC(et
.renew_till
);
1537 et
.flags
.renewable
= 1;
1541 if (f
.request_anonymous
)
1542 et
.flags
.anonymous
= 1;
1546 copy_HostAddresses(b
->addresses
, et
.caddr
);
1549 et
.transited
.tr_type
= DOMAIN_X500_COMPRESS
;
1550 krb5_data_zero(&et
.transited
.contents
);
1552 /* The MIT ASN.1 library (obviously) doesn't tell lengths encoded
1553 * as 0 and as 0x80 (meaning indefinite length) apart, and is thus
1554 * incapable of correctly decoding SEQUENCE OF's of zero length.
1556 * To fix this, always send at least one no-op last_req
1558 * If there's a pw_end or valid_end we will use that,
1559 * otherwise just a dummy lr.
1561 ek
.last_req
.val
= malloc(2 * sizeof(*ek
.last_req
.val
));
1562 if (ek
.last_req
.val
== NULL
) {
1566 ek
.last_req
.len
= 0;
1567 if (client
->entry
.pw_end
1568 && (config
->kdc_warn_pwexpire
== 0
1569 || kdc_time
+ config
->kdc_warn_pwexpire
>= *client
->entry
.pw_end
)) {
1570 ek
.last_req
.val
[ek
.last_req
.len
].lr_type
= LR_PW_EXPTIME
;
1571 ek
.last_req
.val
[ek
.last_req
.len
].lr_value
= *client
->entry
.pw_end
;
1574 if (client
->entry
.valid_end
) {
1575 ek
.last_req
.val
[ek
.last_req
.len
].lr_type
= LR_ACCT_EXPTIME
;
1576 ek
.last_req
.val
[ek
.last_req
.len
].lr_value
= *client
->entry
.valid_end
;
1579 if (ek
.last_req
.len
== 0) {
1580 ek
.last_req
.val
[ek
.last_req
.len
].lr_type
= LR_NONE
;
1581 ek
.last_req
.val
[ek
.last_req
.len
].lr_value
= 0;
1584 ek
.nonce
= b
->nonce
;
1585 if (client
->entry
.valid_end
|| client
->entry
.pw_end
) {
1586 ALLOC(ek
.key_expiration
);
1587 if (client
->entry
.valid_end
) {
1588 if (client
->entry
.pw_end
)
1589 *ek
.key_expiration
= min(*client
->entry
.valid_end
,
1590 *client
->entry
.pw_end
);
1592 *ek
.key_expiration
= *client
->entry
.valid_end
;
1594 *ek
.key_expiration
= *client
->entry
.pw_end
;
1596 ek
.key_expiration
= NULL
;
1597 ek
.flags
= et
.flags
;
1598 ek
.authtime
= et
.authtime
;
1600 ALLOC(ek
.starttime
);
1601 *ek
.starttime
= *et
.starttime
;
1603 ek
.endtime
= et
.endtime
;
1604 if (et
.renew_till
) {
1605 ALLOC(ek
.renew_till
);
1606 *ek
.renew_till
= *et
.renew_till
;
1608 copy_Realm(&rep
.ticket
.realm
, &ek
.srealm
);
1609 copy_PrincipalName(&rep
.ticket
.sname
, &ek
.sname
);
1612 copy_HostAddresses(et
.caddr
, ek
.caddr
);
1616 rep
.padata
->len
= 0;
1617 rep
.padata
->val
= NULL
;
1621 e_text
= "Failed to build PK-INIT reply";
1622 ret
= _kdc_pk_mk_pa_reply(context
, config
, pkp
, client
,
1623 sessionetype
, req
, req_buffer
,
1624 &reply_key
, &et
.key
, rep
.padata
);
1627 ret
= _kdc_add_inital_verified_cas(context
,
1636 reply_key
= &ckey
->key
;
1637 ret
= krb5_generate_random_keyblock(context
, sessionetype
, &et
.key
);
1641 e_text
= "Client have no reply key";
1642 ret
= KRB5KDC_ERR_CLIENT_NOTYET
;
1646 ret
= copy_EncryptionKey(&et
.key
, &ek
.key
);
1651 set_salt_padata (rep
.padata
, ckey
->salt
);
1653 /* Add signing of alias referral */
1654 if (f
.canonicalize
) {
1655 PA_ClientCanonicalized canon
;
1661 memset(&canon
, 0, sizeof(canon
));
1663 canon
.names
.requested_name
= *b
->cname
;
1664 canon
.names
.mapped_name
= client
->entry
.principal
->name
;
1666 ASN1_MALLOC_ENCODE(PA_ClientCanonicalizedNames
, data
.data
, data
.length
,
1667 &canon
.names
, &len
, ret
);
1670 if (data
.length
!= len
)
1671 krb5_abortx(context
, "internal asn.1 error");
1673 /* sign using "returned session key" */
1674 ret
= krb5_crypto_init(context
, &et
.key
, 0, &crypto
);
1680 ret
= krb5_create_checksum(context
, crypto
,
1681 KRB5_KU_CANONICALIZED_NAMES
, 0,
1682 data
.data
, data
.length
,
1683 &canon
.canon_checksum
);
1685 krb5_crypto_destroy(context
, crypto
);
1689 ASN1_MALLOC_ENCODE(PA_ClientCanonicalized
, data
.data
, data
.length
,
1691 free_Checksum(&canon
.canon_checksum
);
1694 if (data
.length
!= len
)
1695 krb5_abortx(context
, "internal asn.1 error");
1697 pa
.padata_type
= KRB5_PADATA_CLIENT_CANONICALIZED
;
1698 pa
.padata_value
= data
;
1699 ret
= add_METHOD_DATA(rep
.padata
, &pa
);
1705 if (rep
.padata
->len
== 0) {
1711 if (send_pac_p(context
, req
)) {
1715 ret
= _kdc_pac_generate(context
, client
, &p
);
1717 kdc_log(context
, config
, 0, "PAC generation failed for -- %s",
1722 ret
= _krb5_pac_sign(context
, p
, et
.authtime
,
1723 client
->entry
.principal
,
1724 &skey
->key
, /* Server key */
1725 &skey
->key
, /* FIXME: should be krbtgt key */
1727 krb5_pac_free(context
, p
);
1729 kdc_log(context
, config
, 0, "PAC signing failed for -- %s",
1734 ret
= _kdc_tkt_add_if_relevant_ad(context
, &et
,
1735 KRB5_AUTHDATA_WIN2K_PAC
,
1737 krb5_data_free(&data
);
1743 _kdc_log_timestamp(context
, config
, "AS-REQ", et
.authtime
, et
.starttime
,
1744 et
.endtime
, et
.renew_till
);
1746 /* do this as the last thing since this signs the EncTicketPart */
1747 ret
= _kdc_add_KRB5SignedPath(context
,
1751 client
->entry
.principal
,
1758 ret
= _kdc_encode_reply(context
, config
,
1759 &rep
, &et
, &ek
, setype
, server
->entry
.kvno
,
1760 &skey
->key
, client
->entry
.kvno
,
1761 reply_key
, 0, &e_text
, reply
);
1762 free_EncTicketPart(&et
);
1763 free_EncKDCRepPart(&ek
);
1768 if (datagram_reply
&& reply
->length
> config
->max_datagram_reply_length
) {
1769 krb5_data_free(reply
);
1770 ret
= KRB5KRB_ERR_RESPONSE_TOO_BIG
;
1771 e_text
= "Reply packet too large";
1777 krb5_mk_error(context
,
1780 (e_data
.data
? &e_data
: NULL
),
1790 _kdc_pk_free_client_param(context
, pkp
);
1795 krb5_free_principal(context
, client_princ
);
1798 krb5_free_principal(context
, server_princ
);
1801 _kdc_free_ent(context
, client
);
1803 _kdc_free_ent(context
, server
);
1808 * Add the AuthorizationData `data´ of `type´ to the last element in
1809 * the sequence of authorization_data in `tkt´ wrapped in an IF_RELEVANT
1813 _kdc_tkt_add_if_relevant_ad(krb5_context context
,
1816 const krb5_data
*data
)
1818 krb5_error_code ret
;
1821 if (tkt
->authorization_data
== NULL
) {
1822 tkt
->authorization_data
= calloc(1, sizeof(*tkt
->authorization_data
));
1823 if (tkt
->authorization_data
== NULL
) {
1824 krb5_set_error_message(context
, ENOMEM
, "out of memory");
1829 /* add the entry to the last element */
1831 AuthorizationData ad
= { 0, NULL
};
1832 AuthorizationDataElement ade
;
1835 ade
.ad_data
= *data
;
1837 ret
= add_AuthorizationData(&ad
, &ade
);
1839 krb5_set_error_message(context
, ret
, "add AuthorizationData failed");
1843 ade
.ad_type
= KRB5_AUTHDATA_IF_RELEVANT
;
1845 ASN1_MALLOC_ENCODE(AuthorizationData
,
1846 ade
.ad_data
.data
, ade
.ad_data
.length
,
1848 free_AuthorizationData(&ad
);
1850 krb5_set_error_message(context
, ret
, "ASN.1 encode of "
1851 "AuthorizationData failed");
1854 if (ade
.ad_data
.length
!= size
)
1855 krb5_abortx(context
, "internal asn.1 encoder error");
1857 ret
= add_AuthorizationData(tkt
->authorization_data
, &ade
);
1858 der_free_octet_string(&ade
.ad_data
);
1860 krb5_set_error_message(context
, ret
, "add AuthorizationData failed");