2 * Copyright (c) 1997 - 2005 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 #include "krb5_locl.h"
39 #define INIT_FIELD(C, T, E, D, F) \
40 (C)->E = krb5_config_get_ ## T ## _default ((C), NULL, (D), \
41 "libdefaults", F, NULL)
43 #define INIT_FLAG(C, O, V, D, F) \
45 if (krb5_config_get_bool_default((C), NULL, (D),"libdefaults", F, NULL)) { \
51 * Set the list of etypes `ret_etypes' from the configuration variable
55 static krb5_error_code
56 set_etypes (krb5_context context
,
58 krb5_enctype
**ret_enctypes
)
61 krb5_enctype
*etypes
= NULL
;
63 etypes_str
= krb5_config_get_strings(context
, NULL
, "libdefaults",
67 for(i
= 0; etypes_str
[i
]; i
++);
68 etypes
= malloc((i
+1) * sizeof(*etypes
));
70 krb5_config_free_strings (etypes_str
);
71 krb5_set_error_string (context
, "malloc: out of memory");
74 for(j
= 0, k
= 0; j
< i
; j
++) {
76 if(krb5_string_to_enctype(context
, etypes_str
[j
], &e
) != 0)
78 if (krb5_enctype_valid(context
, e
) != 0)
82 etypes
[k
] = ETYPE_NULL
;
83 krb5_config_free_strings(etypes_str
);
85 *ret_enctypes
= etypes
;
90 * read variables from the configuration file and set in `context'
93 static krb5_error_code
94 init_context_from_config_file(krb5_context context
)
98 krb5_enctype
*tmptypes
;
100 INIT_FIELD(context
, time
, max_skew
, 5 * 60, "clockskew");
101 INIT_FIELD(context
, time
, kdc_timeout
, 3, "kdc_timeout");
102 INIT_FIELD(context
, int, max_retries
, 3, "max_retries");
104 INIT_FIELD(context
, string
, http_proxy
, NULL
, "http_proxy");
106 ret
= set_etypes (context
, "default_etypes", &tmptypes
);
109 free(context
->etypes
);
110 context
->etypes
= tmptypes
;
112 ret
= set_etypes (context
, "default_etypes_des", &tmptypes
);
115 free(context
->etypes_des
);
116 context
->etypes_des
= tmptypes
;
118 /* default keytab name */
121 tmp
= getenv("KRB5_KTNAME");
123 context
->default_keytab
= tmp
;
125 INIT_FIELD(context
, string
, default_keytab
,
126 KEYTAB_DEFAULT
, "default_keytab_name");
128 INIT_FIELD(context
, string
, default_keytab_modify
,
129 NULL
, "default_keytab_modify_name");
131 INIT_FIELD(context
, string
, time_fmt
,
132 "%Y-%m-%dT%H:%M:%S", "time_format");
134 INIT_FIELD(context
, string
, date_fmt
,
135 "%Y-%m-%d", "date_format");
137 INIT_FIELD(context
, bool, log_utc
,
142 /* init dns-proxy slime */
143 tmp
= krb5_config_get_string(context
, NULL
, "libdefaults",
146 roken_gethostby_setup(context
->http_proxy
, tmp
);
147 krb5_free_host_realm (context
, context
->default_realms
);
148 context
->default_realms
= NULL
;
151 krb5_addresses addresses
;
154 krb5_set_extra_addresses(context
, NULL
);
155 adr
= krb5_config_get_strings(context
, NULL
,
159 memset(&addresses
, 0, sizeof(addresses
));
160 for(a
= adr
; a
&& *a
; a
++) {
161 ret
= krb5_parse_address(context
, *a
, &addresses
);
163 krb5_add_extra_addresses(context
, &addresses
);
164 krb5_free_addresses(context
, &addresses
);
167 krb5_config_free_strings(adr
);
169 krb5_set_ignore_addresses(context
, NULL
);
170 adr
= krb5_config_get_strings(context
, NULL
,
174 memset(&addresses
, 0, sizeof(addresses
));
175 for(a
= adr
; a
&& *a
; a
++) {
176 ret
= krb5_parse_address(context
, *a
, &addresses
);
178 krb5_add_ignore_addresses(context
, &addresses
);
179 krb5_free_addresses(context
, &addresses
);
182 krb5_config_free_strings(adr
);
185 INIT_FIELD(context
, bool, scan_interfaces
, TRUE
, "scan_interfaces");
186 INIT_FIELD(context
, int, fcache_vno
, 0, "fcache_version");
187 /* prefer dns_lookup_kdc over srv_lookup. */
188 INIT_FIELD(context
, bool, srv_lookup
, TRUE
, "srv_lookup");
189 INIT_FIELD(context
, bool, srv_lookup
, context
->srv_lookup
, "dns_lookup_kdc");
190 INIT_FIELD(context
, int, large_msg_size
, 1400, "large_message_size");
191 INIT_FLAG(context
, flags
, KRB5_CTX_F_DNS_CANONICALIZE_HOSTNAME
, TRUE
, "dns_canonicalize_hostname");
192 INIT_FLAG(context
, flags
, KRB5_CTX_F_CHECK_PAC
, TRUE
, "check_pac");
193 context
->default_cc_name
= NULL
;
194 context
->default_cc_name_set
= 0;
199 * Initializes the context structure and reads the configuration file
200 * /etc/krb5.conf. The structure should be freed by calling
201 * krb5_free_context() when it is no longer being used.
203 * @param context pointer to returned context
205 * @return Returns 0 to indicate success. Otherwise an errno code is
206 * returned. Failure means either that something bad happened during
207 * initialization (typically ENOMEM) or that Kerberos should not be
213 krb5_error_code KRB5_LIB_FUNCTION
214 krb5_init_context(krb5_context
*context
)
222 p
= calloc(1, sizeof(*p
));
226 p
->mutex
= malloc(sizeof(HEIMDAL_MUTEX
));
227 if (p
->mutex
== NULL
) {
231 HEIMDAL_MUTEX_init(p
->mutex
);
233 ret
= krb5_get_default_config_files(&files
);
236 ret
= krb5_set_config_files(p
, files
);
237 krb5_free_config_files(files
);
241 /* init error tables */
246 krb5_cc_register(p
, &krb5_acc_ops
, TRUE
);
247 krb5_cc_register(p
, &krb5_fcc_ops
, TRUE
);
248 krb5_cc_register(p
, &krb5_mcc_ops
, TRUE
);
250 krb5_cc_register(p
, &krb5_kcm_ops
, TRUE
);
255 krb5_kt_register (p
, &krb5_fkt_ops
);
256 krb5_kt_register (p
, &krb5_wrfkt_ops
);
257 krb5_kt_register (p
, &krb5_javakt_ops
);
258 krb5_kt_register (p
, &krb5_mkt_ops
);
259 krb5_kt_register (p
, &krb5_akf_ops
);
260 krb5_kt_register (p
, &krb4_fkt_ops
);
261 krb5_kt_register (p
, &krb5_srvtab_fkt_ops
);
262 krb5_kt_register (p
, &krb5_any_ops
);
266 krb5_free_context(p
);
274 * Frees the krb5_context allocated by krb5_init_context().
276 * @param context context to be freed.
281 void KRB5_LIB_FUNCTION
282 krb5_free_context(krb5_context context
)
284 if (context
->default_cc_name
)
285 free(context
->default_cc_name
);
286 if (context
->default_cc_name_env
)
287 free(context
->default_cc_name_env
);
288 free(context
->etypes
);
289 free(context
->etypes_des
);
290 krb5_free_host_realm (context
, context
->default_realms
);
291 krb5_config_file_free (context
, context
->cf
);
292 free_error_table (context
->et_list
);
293 free(context
->cc_ops
);
294 free(context
->kt_types
);
295 krb5_clear_error_string(context
);
296 if(context
->warn_dest
!= NULL
)
297 krb5_closelog(context
, context
->warn_dest
);
298 krb5_set_extra_addresses(context
, NULL
);
299 krb5_set_ignore_addresses(context
, NULL
);
300 krb5_set_send_to_kdc_func(context
, NULL
, NULL
);
301 if (context
->mutex
!= NULL
) {
302 HEIMDAL_MUTEX_destroy(context
->mutex
);
303 free(context
->mutex
);
305 memset(context
, 0, sizeof(*context
));
310 * Reinit the context from a new set of filenames.
312 * @param context context to add configuration too.
313 * @param filenames array of filenames, end of list is indicated with a NULL filename.
315 * @return Returns 0 to indicate success. Otherwise an kerberos et
316 * error code is returned, see krb5_get_error_message().
321 krb5_error_code KRB5_LIB_FUNCTION
322 krb5_set_config_files(krb5_context context
, char **filenames
)
325 krb5_config_binding
*tmp
= NULL
;
326 while(filenames
!= NULL
&& *filenames
!= NULL
&& **filenames
!= '\0') {
327 ret
= krb5_config_parse_file_multi(context
, *filenames
, &tmp
);
328 if(ret
!= 0 && ret
!= ENOENT
&& ret
!= EACCES
) {
329 krb5_config_file_free(context
, tmp
);
335 /* with this enabled and if there are no config files, Kerberos is
336 considererd disabled */
340 krb5_config_file_free(context
, context
->cf
);
342 ret
= init_context_from_config_file(context
);
346 static krb5_error_code
347 add_file(char ***pfilenames
, int *len
, char *file
)
349 char **pp
= *pfilenames
;
352 for(i
= 0; i
< *len
; i
++) {
353 if(strcmp(pp
[i
], file
) == 0) {
359 pp
= realloc(*pfilenames
, (*len
+ 2) * sizeof(*pp
));
373 * `pq' isn't free, it's up the the caller
376 krb5_error_code KRB5_LIB_FUNCTION
377 krb5_prepend_config_files(const char *filelist
, char **pq
, char ***ret_pp
)
392 l
= strsep_copy(&q
, ":", NULL
, 0);
397 krb5_free_config_files(pp
);
400 l
= strsep_copy(&p
, ":", fn
, l
+ 1);
401 ret
= add_file(&pp
, &len
, fn
);
403 krb5_free_config_files(pp
);
411 for (i
= 0; pq
[i
] != NULL
; i
++) {
414 krb5_free_config_files(pp
);
417 ret
= add_file(&pp
, &len
, fn
);
419 krb5_free_config_files(pp
);
430 * Prepend the filename to the global configuration list.
432 * @param filelist a filename to add to the default list of filename
433 * @param pfilenames return array of filenames, should be freed with krb5_free_config_files().
435 * @return Returns 0 to indicate success. Otherwise an kerberos et
436 * error code is returned, see krb5_get_error_message().
441 krb5_error_code KRB5_LIB_FUNCTION
442 krb5_prepend_config_files_default(const char *filelist
, char ***pfilenames
)
445 char **defpp
, **pp
= NULL
;
447 ret
= krb5_get_default_config_files(&defpp
);
451 ret
= krb5_prepend_config_files(filelist
, defpp
, &pp
);
452 krb5_free_config_files(defpp
);
461 * Get the global configuration list.
463 * @param pfilenames return array of filenames, should be freed with krb5_free_config_files().
465 * @return Returns 0 to indicate success. Otherwise an kerberos et
466 * error code is returned, see krb5_get_error_message().
471 krb5_error_code KRB5_LIB_FUNCTION
472 krb5_get_default_config_files(char ***pfilenames
)
474 const char *files
= NULL
;
476 if (pfilenames
== NULL
)
479 files
= getenv("KRB5_CONFIG");
481 files
= krb5_config_file
;
483 return krb5_prepend_config_files(files
, NULL
, pfilenames
);
487 * Free a list of configuration files.
489 * @param filenames list to be freed.
491 * @return Returns 0 to indicate success. Otherwise an kerberos et
492 * error code is returned, see krb5_get_error_message().
497 void KRB5_LIB_FUNCTION
498 krb5_free_config_files(char **filenames
)
501 for(p
= filenames
; *p
!= NULL
; p
++)
507 * Returns the list of Kerberos encryption types sorted in order of
508 * most preferred to least preferred encryption type. Note that some
509 * encryption types might be disabled, so you need to check with
510 * krb5_enctype_valid() before using the encryption type.
512 * @return list of enctypes, terminated with ETYPE_NULL. Its a static
513 * array completed into the Kerberos library so the content doesn't
519 const krb5_enctype
* KRB5_LIB_FUNCTION
520 krb5_kerberos_enctypes(krb5_context context
)
522 static const krb5_enctype p
[] = {
523 ETYPE_AES256_CTS_HMAC_SHA1_96
,
524 ETYPE_AES128_CTS_HMAC_SHA1_96
,
527 ETYPE_ARCFOUR_HMAC_MD5
,
537 * set `etype' to a malloced list of the default enctypes
540 static krb5_error_code
541 default_etypes(krb5_context context
, krb5_enctype
**etype
)
543 const krb5_enctype
*p
;
544 krb5_enctype
*e
= NULL
, *ep
;
547 p
= krb5_kerberos_enctypes(context
);
549 for (i
= 0; p
[i
] != ETYPE_NULL
; i
++) {
550 if (krb5_enctype_valid(context
, p
[i
]) != 0)
552 ep
= realloc(e
, (n
+ 2) * sizeof(*e
));
555 krb5_set_error_string (context
, "malloc: out of memory");
560 e
[n
+ 1] = ETYPE_NULL
;
568 * Set the default encryption types that will be use in communcation
569 * with the KDC, clients and servers.
571 * @param context Kerberos 5 context.
572 * @param etypes Encryption types, array terminated with ETYPE_NULL (0).
574 * @return Returns 0 to indicate success. Otherwise an kerberos et
575 * error code is returned, see krb5_get_error_message().
580 krb5_error_code KRB5_LIB_FUNCTION
581 krb5_set_default_in_tkt_etypes(krb5_context context
,
582 const krb5_enctype
*etypes
)
584 krb5_enctype
*p
= NULL
;
588 for (i
= 0; etypes
[i
]; ++i
) {
590 ret
= krb5_enctype_valid(context
, etypes
[i
]);
597 krb5_set_error_string (context
, "malloc: out of memory");
600 memmove(p
, etypes
, i
* sizeof(krb5_enctype
));
603 free(context
->etypes
);
609 * Get the default encryption types that will be use in communcation
610 * with the KDC, clients and servers.
612 * @param context Kerberos 5 context.
613 * @param etypes Encryption types, array terminated with
614 * ETYPE_NULL(0), caller should free array with krb5_xfree():
616 * @return Returns 0 to indicate success. Otherwise an kerberos et
617 * error code is returned, see krb5_get_error_message().
622 krb5_error_code KRB5_LIB_FUNCTION
623 krb5_get_default_in_tkt_etypes(krb5_context context
,
624 krb5_enctype
**etypes
)
630 if(context
->etypes
) {
631 for(i
= 0; context
->etypes
[i
]; i
++);
635 krb5_set_error_string (context
, "malloc: out of memory");
638 memmove(p
, context
->etypes
, i
* sizeof(krb5_enctype
));
640 ret
= default_etypes(context
, &p
);
649 * Return the error string for the error code. The caller must not
652 * @param context Kerberos 5 context.
653 * @param code Kerberos error code.
655 * @return the error message matching code
660 const char* KRB5_LIB_FUNCTION
661 krb5_get_err_text(krb5_context context
, krb5_error_code code
)
663 const char *p
= NULL
;
665 p
= com_right(context
->et_list
, code
);
674 * Init the built-in ets in the Kerberos library.
676 * @param context kerberos context to add the ets too
681 void KRB5_LIB_FUNCTION
682 krb5_init_ets(krb5_context context
)
684 if(context
->et_list
== NULL
){
685 krb5_add_et_list(context
, initialize_krb5_error_table_r
);
686 krb5_add_et_list(context
, initialize_asn1_error_table_r
);
687 krb5_add_et_list(context
, initialize_heim_error_table_r
);
688 krb5_add_et_list(context
, initialize_k524_error_table_r
);
690 krb5_add_et_list(context
, initialize_hx_error_table_r
);
696 * Make the kerberos library default to the admin KDC.
698 * @param context Kerberos 5 context.
699 * @param flag boolean flag to select if the use the admin KDC or not.
704 void KRB5_LIB_FUNCTION
705 krb5_set_use_admin_kdc (krb5_context context
, krb5_boolean flag
)
707 context
->use_admin_kdc
= flag
;
711 * Make the kerberos library default to the admin KDC.
713 * @param context Kerberos 5 context.
715 * @return boolean flag to telling the context will use admin KDC as the default KDC.
720 krb5_boolean KRB5_LIB_FUNCTION
721 krb5_get_use_admin_kdc (krb5_context context
)
723 return context
->use_admin_kdc
;
727 * Add extra address to the address list that the library will add to
728 * the client's address list when communicating with the KDC.
730 * @param context Kerberos 5 context.
731 * @param addresses addreses to add
733 * @return Returns 0 to indicate success. Otherwise an kerberos et
734 * error code is returned, see krb5_get_error_message().
739 krb5_error_code KRB5_LIB_FUNCTION
740 krb5_add_extra_addresses(krb5_context context
, krb5_addresses
*addresses
)
743 if(context
->extra_addresses
)
744 return krb5_append_addresses(context
,
745 context
->extra_addresses
, addresses
);
747 return krb5_set_extra_addresses(context
, addresses
);
751 * Set extra address to the address list that the library will add to
752 * the client's address list when communicating with the KDC.
754 * @param context Kerberos 5 context.
755 * @param addresses addreses to set
757 * @return Returns 0 to indicate success. Otherwise an kerberos et
758 * error code is returned, see krb5_get_error_message().
763 krb5_error_code KRB5_LIB_FUNCTION
764 krb5_set_extra_addresses(krb5_context context
, const krb5_addresses
*addresses
)
766 if(context
->extra_addresses
)
767 krb5_free_addresses(context
, context
->extra_addresses
);
769 if(addresses
== NULL
) {
770 if(context
->extra_addresses
!= NULL
) {
771 free(context
->extra_addresses
);
772 context
->extra_addresses
= NULL
;
776 if(context
->extra_addresses
== NULL
) {
777 context
->extra_addresses
= malloc(sizeof(*context
->extra_addresses
));
778 if(context
->extra_addresses
== NULL
) {
779 krb5_set_error_string (context
, "malloc: out of memory");
783 return krb5_copy_addresses(context
, addresses
, context
->extra_addresses
);
787 * Get extra address to the address list that the library will add to
788 * the client's address list when communicating with the KDC.
790 * @param context Kerberos 5 context.
791 * @param addresses addreses to set
793 * @return Returns 0 to indicate success. Otherwise an kerberos et
794 * error code is returned, see krb5_get_error_message().
799 krb5_error_code KRB5_LIB_FUNCTION
800 krb5_get_extra_addresses(krb5_context context
, krb5_addresses
*addresses
)
802 if(context
->extra_addresses
== NULL
) {
803 memset(addresses
, 0, sizeof(*addresses
));
806 return krb5_copy_addresses(context
,context
->extra_addresses
, addresses
);
810 * Add extra addresses to ignore when fetching addresses from the
811 * underlaying operating system.
813 * @param context Kerberos 5 context.
814 * @param addresses addreses to ignore
816 * @return Returns 0 to indicate success. Otherwise an kerberos et
817 * error code is returned, see krb5_get_error_message().
822 krb5_error_code KRB5_LIB_FUNCTION
823 krb5_add_ignore_addresses(krb5_context context
, krb5_addresses
*addresses
)
826 if(context
->ignore_addresses
)
827 return krb5_append_addresses(context
,
828 context
->ignore_addresses
, addresses
);
830 return krb5_set_ignore_addresses(context
, addresses
);
834 * Set extra addresses to ignore when fetching addresses from the
835 * underlaying operating system.
837 * @param context Kerberos 5 context.
838 * @param addresses addreses to ignore
840 * @return Returns 0 to indicate success. Otherwise an kerberos et
841 * error code is returned, see krb5_get_error_message().
846 krb5_error_code KRB5_LIB_FUNCTION
847 krb5_set_ignore_addresses(krb5_context context
, const krb5_addresses
*addresses
)
849 if(context
->ignore_addresses
)
850 krb5_free_addresses(context
, context
->ignore_addresses
);
851 if(addresses
== NULL
) {
852 if(context
->ignore_addresses
!= NULL
) {
853 free(context
->ignore_addresses
);
854 context
->ignore_addresses
= NULL
;
858 if(context
->ignore_addresses
== NULL
) {
859 context
->ignore_addresses
= malloc(sizeof(*context
->ignore_addresses
));
860 if(context
->ignore_addresses
== NULL
) {
861 krb5_set_error_string (context
, "malloc: out of memory");
865 return krb5_copy_addresses(context
, addresses
, context
->ignore_addresses
);
869 * Get extra addresses to ignore when fetching addresses from the
870 * underlaying operating system.
872 * @param context Kerberos 5 context.
873 * @param addresses list addreses ignored
875 * @return Returns 0 to indicate success. Otherwise an kerberos et
876 * error code is returned, see krb5_get_error_message().
881 krb5_error_code KRB5_LIB_FUNCTION
882 krb5_get_ignore_addresses(krb5_context context
, krb5_addresses
*addresses
)
884 if(context
->ignore_addresses
== NULL
) {
885 memset(addresses
, 0, sizeof(*addresses
));
888 return krb5_copy_addresses(context
, context
->ignore_addresses
, addresses
);
892 * Set version of fcache that the library should use.
894 * @param context Kerberos 5 context.
895 * @param version version number.
897 * @return Returns 0 to indicate success. Otherwise an kerberos et
898 * error code is returned, see krb5_get_error_message().
903 krb5_error_code KRB5_LIB_FUNCTION
904 krb5_set_fcache_version(krb5_context context
, int version
)
906 context
->fcache_vno
= version
;
911 * Get version of fcache that the library should use.
913 * @param context Kerberos 5 context.
914 * @param version version number.
916 * @return Returns 0 to indicate success. Otherwise an kerberos et
917 * error code is returned, see krb5_get_error_message().
922 krb5_error_code KRB5_LIB_FUNCTION
923 krb5_get_fcache_version(krb5_context context
, int *version
)
925 *version
= context
->fcache_vno
;
930 * Runtime check if the Kerberos library was complied with thread support.
932 * @return TRUE if the library was compiled with thread support, FALSE if not.
938 krb5_boolean KRB5_LIB_FUNCTION
939 krb5_is_thread_safe(void)
941 #ifdef ENABLE_PTHREAD_SUPPORT
949 * Set if the library should use DNS to canonicalize hostnames.
951 * @param context Kerberos 5 context.
952 * @param flag if its dns canonicalizion is used or not.
957 void KRB5_LIB_FUNCTION
958 krb5_set_dns_canonicalize_hostname (krb5_context context
, krb5_boolean flag
)
961 context
->flags
|= KRB5_CTX_F_DNS_CANONICALIZE_HOSTNAME
;
963 context
->flags
&= ~KRB5_CTX_F_DNS_CANONICALIZE_HOSTNAME
;
967 * Get if the library uses DNS to canonicalize hostnames.
969 * @param context Kerberos 5 context.
971 * @return return non zero if the library uses DNS to canonicalize hostnames.
976 krb5_boolean KRB5_LIB_FUNCTION
977 krb5_get_dns_canonicalize_hostname (krb5_context context
)
979 return (context
->flags
& KRB5_CTX_F_DNS_CANONICALIZE_HOSTNAME
) ? 1 : 0;
983 * Get current offset in time to the KDC.
985 * @param context Kerberos 5 context.
986 * @param sec seconds part of offset.
987 * @param usec micro seconds part of offset.
989 * @return return non zero if the library uses DNS to canonicalize hostnames.
994 krb5_error_code KRB5_LIB_FUNCTION
995 krb5_get_kdc_sec_offset (krb5_context context
, int32_t *sec
, int32_t *usec
)
998 *sec
= context
->kdc_sec_offset
;
1000 *usec
= context
->kdc_usec_offset
;
1005 * Get max time skew allowed.
1007 * @param context Kerberos 5 context.
1009 * @return timeskew in seconds.
1014 time_t KRB5_LIB_FUNCTION
1015 krb5_get_max_time_skew (krb5_context context
)
1017 return context
->max_skew
;
1021 * Set max time skew allowed.
1023 * @param context Kerberos 5 context.
1024 * @param t timeskew in seconds.
1029 void KRB5_LIB_FUNCTION
1030 krb5_set_max_time_skew (krb5_context context
, time_t t
)
1032 context
->max_skew
= t
;