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
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #ifdef HAVE_KRB5_KEYBLOCK_KEYVALUE
27 #define KRB5_KEY_TYPE(k) ((k)->keytype)
28 #define KRB5_KEY_LENGTH(k) ((k)->keyvalue.length)
29 #define KRB5_KEY_DATA(k) ((k)->keyvalue.data)
31 #define KRB5_KEY_TYPE(k) ((k)->enctype)
32 #define KRB5_KEY_LENGTH(k) ((k)->length)
33 #define KRB5_KEY_DATA(k) ((k)->contents)
34 #endif /* HAVE_KRB5_KEYBLOCK_KEYVALUE */
36 #ifndef HAVE_KRB5_SET_REAL_TIME
38 * This function is not in the Heimdal mainline.
40 krb5_error_code
krb5_set_real_time(krb5_context context
, int32_t seconds
, int32_t microseconds
)
45 ret
= krb5_us_timeofday(context
, &sec
, &usec
);
49 context
->kdc_sec_offset
= seconds
- sec
;
50 context
->kdc_usec_offset
= microseconds
- usec
;
56 #if defined(HAVE_KRB5_SET_DEFAULT_IN_TKT_ETYPES) && !defined(HAVE_KRB5_SET_DEFAULT_TGS_KTYPES)
57 krb5_error_code
krb5_set_default_tgs_ktypes(krb5_context ctx
, const krb5_enctype
*enc
)
59 return krb5_set_default_in_tkt_etypes(ctx
, enc
);
63 #if defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS)
65 void setup_kaddr( krb5_address
*pkaddr
, struct sockaddr
*paddr
)
67 pkaddr
->addr_type
= KRB5_ADDRESS_INET
;
68 pkaddr
->address
.length
= sizeof(((struct sockaddr_in
*)paddr
)->sin_addr
);
69 pkaddr
->address
.data
= (char *)&(((struct sockaddr_in
*)paddr
)->sin_addr
);
71 #elif defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS)
73 void setup_kaddr( krb5_address
*pkaddr
, struct sockaddr
*paddr
)
75 pkaddr
->addrtype
= ADDRTYPE_INET
;
76 pkaddr
->length
= sizeof(((struct sockaddr_in
*)paddr
)->sin_addr
);
77 pkaddr
->contents
= (char *)&(((struct sockaddr_in
*)paddr
)->sin_addr
);
80 __ERROR__XX__UNKNOWN_ADDRTYPE
83 #if defined(HAVE_KRB5_PRINCIPAL2SALT) && defined(HAVE_KRB5_USE_ENCTYPE) && defined(HAVE_KRB5_STRING_TO_KEY)
84 int create_kerberos_key_from_string(krb5_context context
,
85 krb5_principal host_princ
,
92 krb5_encrypt_block eblock
;
94 ret
= krb5_principal2salt(context
, host_princ
, &salt
);
96 DEBUG(1,("krb5_principal2salt failed (%s)\n", error_message(ret
)));
99 krb5_use_enctype(context
, &eblock
, enctype
);
100 return krb5_string_to_key(context
, &eblock
, key
, password
, &salt
);
102 #elif defined(HAVE_KRB5_GET_PW_SALT) && defined(HAVE_KRB5_STRING_TO_KEY_SALT)
103 int create_kerberos_key_from_string(krb5_context context
,
104 krb5_principal host_princ
,
107 krb5_enctype enctype
)
112 ret
= krb5_get_pw_salt(context
, host_princ
, &salt
);
114 DEBUG(1,("krb5_get_pw_salt failed (%s)\n", error_message(ret
)));
117 return krb5_string_to_key_salt(context
, enctype
, password
->data
,
121 __ERROR_XX_UNKNOWN_CREATE_KEY_FUNCTIONS
124 #if defined(HAVE_KRB5_GET_PERMITTED_ENCTYPES)
125 krb5_error_code
get_kerberos_allowed_etypes(krb5_context context
,
126 krb5_enctype
**enctypes
)
128 return krb5_get_permitted_enctypes(context
, enctypes
);
130 #elif defined(HAVE_KRB5_GET_DEFAULT_IN_TKT_ETYPES)
131 krb5_error_code
get_kerberos_allowed_etypes(krb5_context context
,
132 krb5_enctype
**enctypes
)
134 return krb5_get_default_in_tkt_etypes(context
, enctypes
);
137 #error UNKNOWN_GET_ENCTYPES_FUNCTIONS
140 void free_kerberos_etypes(krb5_context context
,
141 krb5_enctype
*enctypes
)
143 #if defined(HAVE_KRB5_FREE_KTYPES)
144 krb5_free_ktypes(context
, enctypes
);
152 #if defined(HAVE_KRB5_AUTH_CON_SETKEY) && !defined(HAVE_KRB5_AUTH_CON_SETUSERUSERKEY)
153 krb5_error_code
krb5_auth_con_setuseruserkey(krb5_context context
,
154 krb5_auth_context auth_context
,
155 krb5_keyblock
*keyblock
)
157 return krb5_auth_con_setkey(context
, auth_context
, keyblock
);
161 void get_auth_data_from_tkt(DATA_BLOB
*auth_data
, krb5_ticket
*tkt
)
163 #if defined(HAVE_KRB5_TKT_ENC_PART2)
165 *auth_data
= data_blob(tkt
->enc_part2
->authorization_data
[0]->contents
,
166 tkt
->enc_part2
->authorization_data
[0]->length
);
168 if (tkt
->ticket
.authorization_data
&& tkt
->ticket
.authorization_data
->len
)
169 *auth_data
= data_blob(tkt
->ticket
.authorization_data
->val
->ad_data
.data
,
170 tkt
->ticket
.authorization_data
->val
->ad_data
.length
);
174 krb5_const_principal
get_principal_from_tkt(krb5_ticket
*tkt
)
176 #if defined(HAVE_KRB5_TKT_ENC_PART2)
177 return tkt
->enc_part2
->client
;
183 #if !defined(HAVE_KRB5_LOCATE_KDC)
184 krb5_error_code
krb5_locate_kdc(krb5_context ctx
, const krb5_data
*realm
, struct sockaddr
**addr_pp
, int *naddrs
, int get_masters
)
186 krb5_krbhst_handle hnd
;
187 krb5_krbhst_info
*hinfo
;
195 rc
= krb5_krbhst_init(ctx
, realm
->data
, KRB5_KRBHST_KDC
, &hnd
);
197 DEBUG(0, ("krb5_locate_kdc: krb5_krbhst_init failed (%s)\n", error_message(rc
)));
201 for ( num_kdcs
= 0; (rc
= krb5_krbhst_next(ctx
, hnd
, &hinfo
) == 0); num_kdcs
++)
204 krb5_krbhst_reset(ctx
, hnd
);
207 DEBUG(0, ("krb5_locate_kdc: zero kdcs found !\n"));
208 krb5_krbhst_free(ctx
, hnd
);
212 sa
= malloc( sizeof(struct sockaddr
) * num_kdcs
);
214 DEBUG(0, ("krb5_locate_kdc: malloc failed\n"));
215 krb5_krbhst_free(ctx
, hnd
);
220 memset(*addr_pp
, '\0', sizeof(struct sockaddr
) * num_kdcs
);
222 for (i
= 0; i
< num_kdcs
&& (rc
= krb5_krbhst_next(ctx
, hnd
, &hinfo
) == 0); i
++) {
223 if (hinfo
->ai
->ai_family
== AF_INET
)
224 memcpy(&sa
[i
], hinfo
->ai
->ai_addr
, sizeof(struct sockaddr
));
227 krb5_krbhst_free(ctx
, hnd
);
236 we can't use krb5_mk_req because w2k wants the service to be in a particular format
238 static krb5_error_code
ads_krb5_mk_req(krb5_context context
,
239 krb5_auth_context
*auth_context
,
240 const krb5_flags ap_req_options
,
241 const char *principal
,
245 krb5_error_code retval
;
246 krb5_principal server
;
251 retval
= krb5_parse_name(context
, principal
, &server
);
253 DEBUG(1,("Failed to parse principal %s\n", principal
));
257 /* obtain ticket & session key */
259 if ((retval
= krb5_copy_principal(context
, server
, &creds
.server
))) {
260 DEBUG(1,("krb5_copy_principal failed (%s)\n",
261 error_message(retval
)));
265 if ((retval
= krb5_cc_get_principal(context
, ccache
, &creds
.client
))) {
266 DEBUG(1,("krb5_cc_get_principal failed (%s)\n",
267 error_message(retval
)));
271 if ((retval
= krb5_get_credentials(context
, 0,
272 ccache
, &creds
, &credsp
))) {
273 DEBUG(1,("krb5_get_credentials failed for %s (%s)\n",
274 principal
, error_message(retval
)));
278 /* cope with the ticket being in the future due to clock skew */
279 if ((unsigned)credsp
->times
.starttime
> time(NULL
)) {
280 time_t t
= time(NULL
);
281 int time_offset
= (unsigned)credsp
->times
.starttime
- t
;
282 DEBUG(4,("Advancing clock by %d seconds to cope with clock skew\n", time_offset
));
283 krb5_set_real_time(context
, t
+ time_offset
+ 1, 0);
287 retval
= krb5_mk_req_extended(context
, auth_context
, ap_req_options
,
288 &in_data
, credsp
, outbuf
);
290 DEBUG(1,("krb5_mk_req_extended failed (%s)\n",
291 error_message(retval
)));
294 krb5_free_creds(context
, credsp
);
297 krb5_free_cred_contents(context
, &creds
);
300 krb5_free_principal(context
, server
);
306 get a kerberos5 ticket for the given service
308 DATA_BLOB
cli_krb5_get_ticket(const char *principal
, time_t time_offset
, unsigned char session_key_krb5
[16])
310 krb5_error_code retval
;
313 krb5_context context
;
314 krb5_auth_context auth_context
= NULL
;
316 krb5_enctype enc_types
[] = {
317 #ifdef ENCTYPE_ARCFOUR_HMAC
318 ENCTYPE_ARCFOUR_HMAC
,
324 retval
= krb5_init_context(&context
);
326 DEBUG(1,("krb5_init_context failed (%s)\n",
327 error_message(retval
)));
331 if (time_offset
!= 0) {
332 krb5_set_real_time(context
, time(NULL
) + time_offset
, 0);
335 if ((retval
= krb5_cc_default(context
, &ccdef
))) {
336 DEBUG(1,("krb5_cc_default failed (%s)\n",
337 error_message(retval
)));
341 if ((retval
= krb5_set_default_tgs_ktypes(context
, enc_types
))) {
342 DEBUG(1,("krb5_set_default_tgs_ktypes failed (%s)\n",
343 error_message(retval
)));
347 if ((retval
= ads_krb5_mk_req(context
,
355 get_krb5_smb_session_key(context
, auth_context
, session_key_krb5
, False
);
357 ret
= data_blob(packet
.data
, packet
.length
);
358 /* Hmm, heimdal dooesn't have this - what's the correct call? */
359 /* krb5_free_data_contents(context, &packet); */
360 krb5_free_context(context
);
365 krb5_free_context(context
);
367 return data_blob(NULL
, 0);
370 BOOL
get_krb5_smb_session_key(krb5_context context
, krb5_auth_context auth_context
, uint8 session_key
[16], BOOL remote
)
372 #ifdef ENCTYPE_ARCFOUR_HMAC
378 memset(session_key
, 0, 16);
380 #ifdef ENCTYPE_ARCFOUR_HMAC
382 err
= krb5_auth_con_getremotesubkey(context
, auth_context
, &skey
);
384 err
= krb5_auth_con_getlocalsubkey(context
, auth_context
, &skey
);
385 if (err
== 0 && skey
!= NULL
) {
386 if (KRB5_KEY_TYPE(skey
) ==
388 && KRB5_KEY_LENGTH(skey
) == 16) {
389 memcpy(session_key
, KRB5_KEY_DATA(skey
), KRB5_KEY_LENGTH(skey
));
392 krb5_free_keyblock(context
, skey
);
394 #endif /* ENCTYPE_ARCFOUR_HMAC */
400 #if defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING) && !defined(HAVE_KRB5_PRINC_COMPONENT)
401 const krb5_data
*krb5_princ_component(krb5_context context
, krb5_principal principal
, int i
)
403 static krb5_data kdata
;
405 kdata
.data
= krb5_principal_get_comp_string(context
, principal
, i
);
406 kdata
.length
= strlen(kdata
.data
);
411 #else /* HAVE_KRB5 */
412 /* this saves a few linking headaches */
413 DATA_BLOB
cli_krb5_get_ticket(const char *principal
, time_t time_offset
, unsigned char session_key_krb5
[16])
415 DEBUG(0,("NO KERBEROS SUPPORT\n"));
416 return data_blob(NULL
, 0);