2 * Copyright (c) 1997 - 2008 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
34 #define KRB5_DEPRECATED
36 #include "krb5_locl.h"
38 #ifndef HEIMDAL_SMALLER
40 static krb5_error_code
41 make_pa_enc_timestamp(krb5_context context
, PA_DATA
*pa
,
42 krb5_enctype etype
, krb5_keyblock
*key
)
48 EncryptedData encdata
;
54 krb5_us_timeofday (context
, &p
.patimestamp
, &usec
);
58 ASN1_MALLOC_ENCODE(PA_ENC_TS_ENC
, buf
, buf_size
, &p
, &len
, ret
);
62 krb5_abortx(context
, "internal error in ASN.1 encoder");
63 ret
= krb5_crypto_init(context
, key
, 0, &crypto
);
68 ret
= krb5_encrypt_EncryptedData(context
,
70 KRB5_KU_PA_ENC_TIMESTAMP
,
76 krb5_crypto_destroy(context
, crypto
);
80 ASN1_MALLOC_ENCODE(EncryptedData
, buf
, buf_size
, &encdata
, &len
, ret
);
81 free_EncryptedData(&encdata
);
85 krb5_abortx(context
, "internal error in ASN.1 encoder");
86 pa
->padata_type
= KRB5_PADATA_ENC_TIMESTAMP
;
87 pa
->padata_value
.length
= len
;
88 pa
->padata_value
.data
= buf
;
92 static krb5_error_code
93 add_padata(krb5_context context
,
95 krb5_principal client
,
96 krb5_key_proc key_proc
,
97 krb5_const_pointer keyseed
,
98 krb5_enctype
*enctypes
,
109 /* default to standard salt */
110 ret
= krb5_get_pw_salt (context
, client
, &salt2
);
116 enctypes
= context
->etypes
;
118 for (ep
= enctypes
; *ep
!= ETYPE_NULL
; ep
++)
121 pa2
= realloc (md
->val
, (md
->len
+ netypes
) * sizeof(*md
->val
));
123 krb5_set_error_message(context
, ENOMEM
, N_("malloc: out of memory", ""));
128 for (i
= 0; i
< netypes
; ++i
) {
131 ret
= (*key_proc
)(context
, enctypes
[i
], *salt
, keyseed
, &key
);
134 ret
= make_pa_enc_timestamp (context
, &md
->val
[md
->len
],
136 krb5_free_keyblock (context
, key
);
142 krb5_free_salt(context
, salt2
);
146 static krb5_error_code
147 init_as_req (krb5_context context
,
150 const krb5_addresses
*addrs
,
151 const krb5_enctype
*etypes
,
152 const krb5_preauthtype
*ptypes
,
153 const krb5_preauthdata
*preauth
,
154 krb5_key_proc key_proc
,
155 krb5_const_pointer keyseed
,
162 memset(a
, 0, sizeof(*a
));
165 a
->msg_type
= krb_as_req
;
166 a
->req_body
.kdc_options
= opts
;
167 a
->req_body
.cname
= malloc(sizeof(*a
->req_body
.cname
));
168 if (a
->req_body
.cname
== NULL
) {
170 krb5_set_error_message(context
, ret
, N_("malloc: out of memory", ""));
173 a
->req_body
.sname
= malloc(sizeof(*a
->req_body
.sname
));
174 if (a
->req_body
.sname
== NULL
) {
176 krb5_set_error_message(context
, ret
, N_("malloc: out of memory", ""));
179 ret
= _krb5_principal2principalname (a
->req_body
.cname
, creds
->client
);
182 ret
= _krb5_principal2principalname (a
->req_body
.sname
, creds
->server
);
185 ret
= copy_Realm(&creds
->client
->realm
, &a
->req_body
.realm
);
189 if(creds
->times
.starttime
) {
190 a
->req_body
.from
= malloc(sizeof(*a
->req_body
.from
));
191 if (a
->req_body
.from
== NULL
) {
193 krb5_set_error_message(context
, ret
, N_("malloc: out of memory", ""));
196 *a
->req_body
.from
= creds
->times
.starttime
;
198 if(creds
->times
.endtime
){
199 ALLOC(a
->req_body
.till
, 1);
200 *a
->req_body
.till
= creds
->times
.endtime
;
202 if(creds
->times
.renew_till
){
203 a
->req_body
.rtime
= malloc(sizeof(*a
->req_body
.rtime
));
204 if (a
->req_body
.rtime
== NULL
) {
206 krb5_set_error_message(context
, ret
, N_("malloc: out of memory", ""));
209 *a
->req_body
.rtime
= creds
->times
.renew_till
;
211 a
->req_body
.nonce
= nonce
;
212 ret
= krb5_init_etype (context
,
213 &a
->req_body
.etype
.len
,
214 &a
->req_body
.etype
.val
,
220 * This means no addresses
223 if (addrs
&& addrs
->len
== 0) {
224 a
->req_body
.addresses
= NULL
;
226 a
->req_body
.addresses
= malloc(sizeof(*a
->req_body
.addresses
));
227 if (a
->req_body
.addresses
== NULL
) {
229 krb5_set_error_message(context
, ret
, N_("malloc: out of memory", ""));
234 ret
= krb5_copy_addresses(context
, addrs
, a
->req_body
.addresses
);
236 ret
= krb5_get_all_client_addrs (context
, a
->req_body
.addresses
);
237 if(ret
== 0 && a
->req_body
.addresses
->len
== 0) {
238 free(a
->req_body
.addresses
);
239 a
->req_body
.addresses
= NULL
;
246 a
->req_body
.enc_authorization_data
= NULL
;
247 a
->req_body
.additional_tickets
= NULL
;
249 if(preauth
!= NULL
) {
252 if(a
->padata
== NULL
) {
254 krb5_set_error_message(context
, ret
, N_("malloc: out of memory", ""));
257 a
->padata
->val
= NULL
;
259 for(i
= 0; i
< preauth
->len
; i
++) {
260 if(preauth
->val
[i
].type
== KRB5_PADATA_ENC_TIMESTAMP
){
263 for(j
= 0; j
< preauth
->val
[i
].info
.len
; j
++) {
264 krb5_salt
*sp
= &salt
;
265 if(preauth
->val
[i
].info
.val
[j
].salttype
)
266 salt
.salttype
= *preauth
->val
[i
].info
.val
[j
].salttype
;
268 salt
.salttype
= KRB5_PW_SALT
;
269 if(preauth
->val
[i
].info
.val
[j
].salt
)
270 salt
.saltvalue
= *preauth
->val
[i
].info
.val
[j
].salt
;
272 if(salt
.salttype
== KRB5_PW_SALT
)
275 krb5_data_zero(&salt
.saltvalue
);
276 ret
= add_padata(context
, a
->padata
, creds
->client
,
278 &preauth
->val
[i
].info
.val
[j
].etype
, 1,
286 /* not sure this is the way to use `ptypes' */
287 if (ptypes
== NULL
|| *ptypes
== KRB5_PADATA_NONE
)
289 else if (*ptypes
== KRB5_PADATA_ENC_TIMESTAMP
) {
291 if (a
->padata
== NULL
) {
293 krb5_set_error_message(context
, ret
, N_("malloc: out of memory", ""));
297 a
->padata
->val
= NULL
;
299 /* make a v5 salted pa-data */
300 add_padata(context
, a
->padata
, creds
->client
,
301 key_proc
, keyseed
, a
->req_body
.etype
.val
,
302 a
->req_body
.etype
.len
, NULL
);
304 /* make a v4 salted pa-data */
305 salt
.salttype
= KRB5_PW_SALT
;
306 krb5_data_zero(&salt
.saltvalue
);
307 add_padata(context
, a
->padata
, creds
->client
,
308 key_proc
, keyseed
, a
->req_body
.etype
.val
,
309 a
->req_body
.etype
.len
, &salt
);
311 ret
= KRB5_PREAUTH_BAD_TYPE
;
312 krb5_set_error_message (context
, ret
,
313 N_("pre-auth type %d not supported", ""),
324 set_ptypes(krb5_context context
,
326 const krb5_preauthtype
**ptypes
,
327 krb5_preauthdata
**preauth
)
329 static krb5_preauthdata preauth2
;
330 static krb5_preauthtype ptypes2
[] = { KRB5_PADATA_ENC_TIMESTAMP
, KRB5_PADATA_NONE
};
335 decode_METHOD_DATA(error
->e_data
->data
,
336 error
->e_data
->length
,
339 for(i
= 0; i
< md
.len
; i
++){
340 switch(md
.val
[i
].padata_type
){
341 case KRB5_PADATA_ENC_TIMESTAMP
:
344 case KRB5_PADATA_ETYPE_INFO
:
345 *preauth
= &preauth2
;
346 ALLOC_SEQ(*preauth
, 1);
347 (*preauth
)->val
[0].type
= KRB5_PADATA_ENC_TIMESTAMP
;
348 decode_ETYPE_INFO(md
.val
[i
].padata_value
.data
,
349 md
.val
[i
].padata_value
.length
,
350 &(*preauth
)->val
[0].info
,
357 free_METHOD_DATA(&md
);
364 krb5_error_code KRB5_LIB_FUNCTION
365 krb5_get_in_cred(krb5_context context
,
367 const krb5_addresses
*addrs
,
368 const krb5_enctype
*etypes
,
369 const krb5_preauthtype
*ptypes
,
370 const krb5_preauthdata
*preauth
,
371 krb5_key_proc key_proc
,
372 krb5_const_pointer keyseed
,
373 krb5_decrypt_proc decrypt_proc
,
374 krb5_const_pointer decryptarg
,
376 krb5_kdc_rep
*ret_as_reply
)
390 krb5_preauthdata
*my_preauth
= NULL
;
394 opts
= int2KDCOptions(options
);
396 krb5_generate_random_block (&nonce
, sizeof(nonce
));
401 ret
= init_as_req (context
,
413 free_ETYPE_INFO(&my_preauth
->val
[0].info
);
414 free (my_preauth
->val
);
420 ASN1_MALLOC_ENCODE(AS_REQ
, req
.data
, req
.length
, &a
, &len
, ret
);
424 if(len
!= req
.length
)
425 krb5_abortx(context
, "internal error in ASN.1 encoder");
427 ret
= krb5_sendto_kdc (context
, &req
, &creds
->client
->realm
, &resp
);
428 krb5_data_free(&req
);
432 memset (&rep
, 0, sizeof(rep
));
433 ret
= decode_AS_REP(resp
.data
, resp
.length
, &rep
.kdc_rep
, &size
);
435 /* let's try to parse it as a KRB-ERROR */
439 ret2
= krb5_rd_error(context
, &resp
, &error
);
440 if(ret2
&& resp
.data
&& ((char*)resp
.data
)[0] == 4)
441 ret
= KRB5KRB_AP_ERR_V4_REPLY
;
442 krb5_data_free(&resp
);
444 ret
= krb5_error_from_rd_error(context
, &error
, creds
);
445 /* if no preauth was set and KDC requires it, give it
447 if (!ptypes
&& !preauth
448 && ret
== KRB5KDC_ERR_PREAUTH_REQUIRED
450 || ret
== KRB5KDC_ERR_BADOPTION
452 && set_ptypes(context
, &error
, &ptypes
, &my_preauth
)) {
454 preauth
= my_preauth
;
455 krb5_free_error_contents(context
, &error
);
456 krb5_clear_error_message(context
);
460 ret_as_reply
->error
= error
;
462 free_KRB_ERROR (&error
);
467 krb5_data_free(&resp
);
471 etype
= rep
.kdc_rep
.enc_part
.etype
;
472 if(rep
.kdc_rep
.padata
){
474 pa
= krb5_find_padata(rep
.kdc_rep
.padata
->val
, rep
.kdc_rep
.padata
->len
,
475 KRB5_PADATA_PW_SALT
, &i
);
478 pa
= krb5_find_padata(rep
.kdc_rep
.padata
->val
,
479 rep
.kdc_rep
.padata
->len
,
480 KRB5_PADATA_AFS3_SALT
, &i
);
484 salt
.salttype
= pa
->padata_type
;
485 salt
.saltvalue
= pa
->padata_value
;
487 ret
= (*key_proc
)(context
, etype
, salt
, keyseed
, &key
);
489 /* make a v5 salted pa-data */
490 ret
= krb5_get_pw_salt (context
, creds
->client
, &salt
);
494 ret
= (*key_proc
)(context
, etype
, salt
, keyseed
, &key
);
495 krb5_free_salt(context
, salt
);
502 if (opts
.request_anonymous
)
503 flags
|= EXTRACT_TICKET_ALLOW_SERVER_MISMATCH
;
505 ret
= _krb5_extract_ticket(context
,
510 KRB5_KU_AS_REP_ENC_PART
,
517 memset (key
->keyvalue
.data
, 0, key
->keyvalue
.length
);
518 krb5_free_keyblock_contents (context
, key
);
522 if (ret
== 0 && ret_as_reply
)
525 krb5_free_kdc_rep (context
, &rep
);
529 krb5_error_code KRB5_LIB_FUNCTION
530 krb5_get_in_tkt(krb5_context context
,
532 const krb5_addresses
*addrs
,
533 const krb5_enctype
*etypes
,
534 const krb5_preauthtype
*ptypes
,
535 krb5_key_proc key_proc
,
536 krb5_const_pointer keyseed
,
537 krb5_decrypt_proc decrypt_proc
,
538 krb5_const_pointer decryptarg
,
541 krb5_kdc_rep
*ret_as_reply
)
546 ret
= krb5_get_in_cred (context
,
561 ret
= krb5_cc_store_cred (context
, ccache
, creds
);
565 #endif /* HEIMDAL_SMALLER */