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_message (context, ENOMEM, N_("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;
93 static krb5_error_code
94 copy_etypes (krb5_context context,
95 krb5_enctype *enctypes,
96 krb5_enctype **ret_enctypes)
100 for (i = 0; enctypes[i]; i++)
104 *ret_enctypes = malloc(sizeof(ret_enctypes[0]) * i);
105 if (*ret_enctypes == NULL) {
106 krb5_set_error_message(context, ENOMEM,
107 N_("malloc: out of memory", ""));
110 memcpy(*ret_enctypes, enctypes, sizeof(ret_enctypes[0]) * i);
116 * read variables from the configuration file and set in `context'
119 static krb5_error_code
120 init_context_from_config_file(krb5_context context)
124 krb5_enctype *tmptypes;
126 INIT_FIELD(context, time, max_skew, 5 * 60, "clockskew");
127 INIT_FIELD(context, time, kdc_timeout, 3, "kdc_timeout");
128 INIT_FIELD(context, int, max_retries, 3, "max_retries");
130 INIT_FIELD(context, string, http_proxy, NULL, "http_proxy");
132 ret = set_etypes (context, "default_etypes", &tmptypes);
135 free(context->etypes);
136 context->etypes = tmptypes;
138 ret = set_etypes (context, "default_etypes_des", &tmptypes);
141 free(context->etypes_des);
142 context->etypes_des = tmptypes;
144 /* default keytab name */
147 tmp = getenv("KRB5_KTNAME");
149 context->default_keytab = tmp;
151 INIT_FIELD(context, string, default_keytab,
152 KEYTAB_DEFAULT, "default_keytab_name");
154 INIT_FIELD(context, string, default_keytab_modify,
155 NULL, "default_keytab_modify_name");
157 INIT_FIELD(context, string, time_fmt,
158 "%Y-%m-%dT%H:%M:%S", "time_format");
160 INIT_FIELD(context, string, date_fmt,
161 "%Y-%m-%d", "date_format");
163 INIT_FIELD(context, bool, log_utc,
168 /* init dns-proxy slime */
169 tmp = krb5_config_get_string(context, NULL, "libdefaults",
172 roken_gethostby_setup(context->http_proxy, tmp);
173 krb5_free_host_realm (context, context->default_realms);
174 context->default_realms = NULL;
177 krb5_addresses addresses;
180 krb5_set_extra_addresses(context, NULL);
181 adr = krb5_config_get_strings(context, NULL,
185 memset(&addresses, 0, sizeof(addresses));
186 for(a = adr; a && *a; a++) {
187 ret = krb5_parse_address(context, *a, &addresses);
189 krb5_add_extra_addresses(context, &addresses);
190 krb5_free_addresses(context, &addresses);
193 krb5_config_free_strings(adr);
195 krb5_set_ignore_addresses(context, NULL);
196 adr = krb5_config_get_strings(context, NULL,
200 memset(&addresses, 0, sizeof(addresses));
201 for(a = adr; a && *a; a++) {
202 ret = krb5_parse_address(context, *a, &addresses);
204 krb5_add_ignore_addresses(context, &addresses);
205 krb5_free_addresses(context, &addresses);
208 krb5_config_free_strings(adr);
211 INIT_FIELD(context, bool, scan_interfaces, TRUE, "scan_interfaces");
212 INIT_FIELD(context, int, fcache_vno, 0, "fcache_version");
213 /* prefer dns_lookup_kdc over srv_lookup. */
214 INIT_FIELD(context, bool, srv_lookup, TRUE, "srv_lookup");
215 INIT_FIELD(context, bool, srv_lookup, context->srv_lookup, "dns_lookup_kdc");
216 INIT_FIELD(context, int, large_msg_size, 1400, "large_message_size");
217 INIT_FLAG(context, flags, KRB5_CTX_F_DNS_CANONICALIZE_HOSTNAME, TRUE, "dns_canonicalize_hostname");
218 INIT_FLAG(context, flags, KRB5_CTX_F_CHECK_PAC, TRUE, "check_pac");
219 context->default_cc_name = NULL;
220 context->default_cc_name_set = 0;
222 ret = krb5_config_get_bool_default(context, NULL, FALSE,
224 "allow_weak_crypto", NULL);
226 krb5_enctype_enable(context, ETYPE_DES_CBC_CRC);
227 krb5_enctype_enable(context, ETYPE_DES_CBC_MD4);
228 krb5_enctype_enable(context, ETYPE_DES_CBC_MD5);
229 krb5_enctype_enable(context, ETYPE_DES_CBC_NONE);
230 krb5_enctype_enable(context, ETYPE_DES_CFB64_NONE);
231 krb5_enctype_enable(context, ETYPE_DES_PCBC_NONE);
237 static krb5_error_code
238 cc_ops_register(krb5_context context)
240 context->cc_ops = NULL;
241 context->num_cc_ops = 0;
243 krb5_cc_register(context, &krb5_acc_ops, TRUE);
244 krb5_cc_register(context, &krb5_fcc_ops, TRUE);
245 krb5_cc_register(context, &krb5_mcc_ops, TRUE);
246 krb5_cc_register(context, &krb5_scc_ops, TRUE);
248 krb5_cc_register(context, &krb5_kcm_ops, TRUE);
253 static krb5_error_code
254 kt_ops_register(krb5_context context)
256 context->num_kt_types = 0;
257 context->kt_types = NULL;
259 krb5_kt_register (context, &krb5_fkt_ops);
260 krb5_kt_register (context, &krb5_wrfkt_ops);
261 krb5_kt_register (context, &krb5_javakt_ops);
262 krb5_kt_register (context, &krb5_mkt_ops);
263 #ifndef HEIMDAL_SMALLER
264 krb5_kt_register (context, &krb5_akf_ops);
266 krb5_kt_register (context, &krb5_any_ops);
272 * Initializes the context structure and reads the configuration file
273 * /etc/krb5.conf. The structure should be freed by calling
274 * krb5_free_context() when it is no longer being used.
276 * @param context pointer to returned context
278 * @return Returns 0 to indicate success. Otherwise an errno code is
279 * returned. Failure means either that something bad happened during
280 * initialization (typically ENOMEM) or that Kerberos should not be
286 krb5_error_code KRB5_LIB_FUNCTION
287 krb5_init_context(krb5_context *context)
295 /* should have a run_once */
296 bindtextdomain(HEIMDAL_TEXTDOMAIN, HEIMDAL_LOCALEDIR);
298 p = calloc(1, sizeof(*p));
302 p->mutex = malloc(sizeof(HEIMDAL_MUTEX));
303 if (p->mutex == NULL) {
307 HEIMDAL_MUTEX_init(p->mutex);
309 p->flags |= KRB5_CTX_F_HOMEDIR_ACCESS;
311 ret = krb5_get_default_config_files(&files);
314 ret = krb5_set_config_files(p, files);
315 krb5_free_config_files(files);
319 /* init error tables */
326 krb5_free_context(p);
334 * Make a copy for the Kerberos 5 context, allocated krb5_contex shoud
335 * be freed with krb5_free_context().
337 * @param context the Kerberos context to copy
338 * @param out the copy of the Kerberos, set to NULL error.
340 * @return Returns 0 to indicate success. Otherwise an kerberos et
341 * error code is returned, see krb5_get_error_message().
346 krb5_error_code KRB5_LIB_FUNCTION
347 krb5_copy_context(krb5_context context, krb5_context *out)
354 p = calloc(1, sizeof(*p));
356 krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
360 p->mutex = malloc(sizeof(HEIMDAL_MUTEX));
361 if (p->mutex == NULL) {
362 krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
366 HEIMDAL_MUTEX_init(p->mutex);
369 if (context->default_cc_name)
370 p->default_cc_name = strdup(context->default_cc_name);
371 if (context->default_cc_name_env)
372 p->default_cc_name_env = strdup(context->default_cc_name_env);
374 if (context->etypes) {
375 ret = copy_etypes(context, context->etypes, &p->etypes);
379 if (context->etypes_des) {
380 ret = copy_etypes(context, context->etypes_des, &p->etypes_des);
385 if (context->default_realms) {
386 ret = krb5_copy_host_realm(context,
387 context->default_realms, &p->default_realms);
392 ret = _krb5_config_copy(context, context->cf, &p->cf);
396 /* XXX should copy */
402 if(context->warn_dest != NULL)
406 ret = krb5_set_extra_addresses(p, context->extra_addresses);
409 ret = krb5_set_extra_addresses(p, context->ignore_addresses);
413 ret = _krb5_copy_send_to_kdc_func(p, context);
422 krb5_free_context(p);
427 * Frees the krb5_context allocated by krb5_init_context().
429 * @param context context to be freed.
434 void KRB5_LIB_FUNCTION
435 krb5_free_context(krb5_context context)
437 if (context->default_cc_name)
438 free(context->default_cc_name);
439 if (context->default_cc_name_env)
440 free(context->default_cc_name_env);
441 free(context->etypes);
442 free(context->etypes_des);
443 krb5_free_host_realm (context, context->default_realms);
444 krb5_config_file_free (context, context->cf);
445 free_error_table (context->et_list);
446 free(context->cc_ops);
447 free(context->kt_types);
448 krb5_clear_error_message(context);
449 if(context->warn_dest != NULL)
450 krb5_closelog(context, context->warn_dest);
451 krb5_set_extra_addresses(context, NULL);
452 krb5_set_ignore_addresses(context, NULL);
453 krb5_set_send_to_kdc_func(context, NULL, NULL);
455 HEIMDAL_MUTEX_destroy(context->mutex);
456 free(context->mutex);
458 memset(context, 0, sizeof(*context));
463 * Reinit the context from a new set of filenames.
465 * @param context context to add configuration too.
466 * @param filenames array of filenames, end of list is indicated with a NULL filename.
468 * @return Returns 0 to indicate success. Otherwise an kerberos et
469 * error code is returned, see krb5_get_error_message().
474 krb5_error_code KRB5_LIB_FUNCTION
475 krb5_set_config_files(krb5_context context, char **filenames)
478 krb5_config_binding *tmp = NULL;
479 while(filenames != NULL && *filenames != NULL && **filenames != '\0') {
480 ret = krb5_config_parse_file_multi(context, *filenames, &tmp);
481 if(ret != 0 && ret != ENOENT && ret != EACCES) {
482 krb5_config_file_free(context, tmp);
488 /* with this enabled and if there are no config files, Kerberos is
489 considererd disabled */
493 krb5_config_file_free(context, context->cf);
495 ret = init_context_from_config_file(context);
499 static krb5_error_code
500 add_file(char ***pfilenames, int *len, char *file)
502 char **pp = *pfilenames;
505 for(i = 0; i < *len; i++) {
506 if(strcmp(pp[i], file) == 0) {
512 pp = realloc(*pfilenames, (*len + 2) * sizeof(*pp));
526 * `pq' isn't free, it's up the the caller
529 krb5_error_code KRB5_LIB_FUNCTION
530 krb5_prepend_config_files(const char *filelist, char **pq, char ***ret_pp)
545 l = strsep_copy(&q, ":", NULL, 0);
550 krb5_free_config_files(pp);
553 (void)strsep_copy(&p, ":", fn, l + 1);
554 ret = add_file(&pp, &len, fn);
556 krb5_free_config_files(pp);
564 for (i = 0; pq[i] != NULL; i++) {
567 krb5_free_config_files(pp);
570 ret = add_file(&pp, &len, fn);
572 krb5_free_config_files(pp);
583 * Prepend the filename to the global configuration list.
585 * @param filelist a filename to add to the default list of filename
586 * @param pfilenames return array of filenames, should be freed with krb5_free_config_files().
588 * @return Returns 0 to indicate success. Otherwise an kerberos et
589 * error code is returned, see krb5_get_error_message().
594 krb5_error_code KRB5_LIB_FUNCTION
595 krb5_prepend_config_files_default(const char *filelist, char ***pfilenames)
598 char **defpp, **pp = NULL;
600 ret = krb5_get_default_config_files(&defpp);
604 ret = krb5_prepend_config_files(filelist, defpp, &pp);
605 krb5_free_config_files(defpp);
614 * Get the global configuration list.
616 * @param pfilenames return array of filenames, should be freed with krb5_free_config_files().
618 * @return Returns 0 to indicate success. Otherwise an kerberos et
619 * error code is returned, see krb5_get_error_message().
624 krb5_error_code KRB5_LIB_FUNCTION
625 krb5_get_default_config_files(char ***pfilenames)
627 const char *files = NULL;
629 if (pfilenames == NULL)
632 files = getenv("KRB5_CONFIG");
634 files = krb5_config_file;
636 return krb5_prepend_config_files(files, NULL, pfilenames);
640 * Free a list of configuration files.
642 * @param filenames list, terminated with a NULL pointer, to be
643 * freed. NULL is an valid argument.
645 * @return Returns 0 to indicate success. Otherwise an kerberos et
646 * error code is returned, see krb5_get_error_message().
651 void KRB5_LIB_FUNCTION
652 krb5_free_config_files(char **filenames)
655 for(p = filenames; p && *p != NULL; p++)
661 * Returns the list of Kerberos encryption types sorted in order of
662 * most preferred to least preferred encryption type. Note that some
663 * encryption types might be disabled, so you need to check with
664 * krb5_enctype_valid() before using the encryption type.
666 * @return list of enctypes, terminated with ETYPE_NULL. Its a static
667 * array completed into the Kerberos library so the content doesn't
673 const krb5_enctype * KRB5_LIB_FUNCTION
674 krb5_kerberos_enctypes(krb5_context context)
676 static const krb5_enctype p[] = {
677 ETYPE_AES256_CTS_HMAC_SHA1_96,
678 ETYPE_AES128_CTS_HMAC_SHA1_96,
681 ETYPE_ARCFOUR_HMAC_MD5,
691 * set `etype' to a malloced list of the default enctypes
694 static krb5_error_code
695 default_etypes(krb5_context context, krb5_enctype **etype)
697 const krb5_enctype *p;
698 krb5_enctype *e = NULL, *ep;
701 p = krb5_kerberos_enctypes(context);
703 for (i = 0; p[i] != ETYPE_NULL; i++) {
704 if (krb5_enctype_valid(context, p[i]) != 0)
706 ep = realloc(e, (n + 2) * sizeof(*e));
709 krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
714 e[n + 1] = ETYPE_NULL;
722 * Set the default encryption types that will be use in communcation
723 * with the KDC, clients and servers.
725 * @param context Kerberos 5 context.
726 * @param etypes Encryption types, array terminated with ETYPE_NULL (0).
728 * @return Returns 0 to indicate success. Otherwise an kerberos et
729 * error code is returned, see krb5_get_error_message().
734 krb5_error_code KRB5_LIB_FUNCTION
735 krb5_set_default_in_tkt_etypes(krb5_context context,
736 const krb5_enctype *etypes)
738 krb5_enctype *p = NULL;
742 for (i = 0; etypes[i]; ++i) {
744 ret = krb5_enctype_valid(context, etypes[i]);
751 krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
754 memmove(p, etypes, i * sizeof(krb5_enctype));
757 free(context->etypes);
763 * Get the default encryption types that will be use in communcation
764 * with the KDC, clients and servers.
766 * @param context Kerberos 5 context.
767 * @param etypes Encryption types, array terminated with
768 * ETYPE_NULL(0), caller should free array with krb5_xfree():
770 * @return Returns 0 to indicate success. Otherwise an kerberos et
771 * error code is returned, see krb5_get_error_message().
776 krb5_error_code KRB5_LIB_FUNCTION
777 krb5_get_default_in_tkt_etypes(krb5_context context,
778 krb5_enctype **etypes)
784 if(context->etypes) {
785 for(i = 0; context->etypes[i]; i++);
789 krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
792 memmove(p, context->etypes, i * sizeof(krb5_enctype));
794 ret = default_etypes(context, &p);
803 * Return the error string for the error code. The caller must not
806 * @param context Kerberos 5 context.
807 * @param code Kerberos error code.
809 * @return the error message matching code
814 const char* KRB5_LIB_FUNCTION
815 krb5_get_err_text(krb5_context context, krb5_error_code code)
817 const char *p = NULL;
819 p = com_right(context->et_list, code);
828 * Init the built-in ets in the Kerberos library.
830 * @param context kerberos context to add the ets too
835 void KRB5_LIB_FUNCTION
836 krb5_init_ets(krb5_context context)
838 if(context->et_list == NULL){
839 krb5_add_et_list(context, initialize_krb5_error_table_r);
840 bindtextdomain(COM_ERR_BINDDOMAIN_krb5, HEIMDAL_LOCALEDIR);
842 krb5_add_et_list(context, initialize_asn1_error_table_r);
843 bindtextdomain(COM_ERR_BINDDOMAIN_asn1, HEIMDAL_LOCALEDIR);
845 krb5_add_et_list(context, initialize_heim_error_table_r);
846 bindtextdomain(COM_ERR_BINDDOMAIN_heim, HEIMDAL_LOCALEDIR);
848 krb5_add_et_list(context, initialize_k524_error_table_r);
849 bindtextdomain(COM_ERR_BINDDOMAIN_k524, HEIMDAL_LOCALEDIR);
852 krb5_add_et_list(context, initialize_hx_error_table_r);
853 bindtextdomain(COM_ERR_BINDDOMAIN_hx, HEIMDAL_LOCALEDIR);
859 * Make the kerberos library default to the admin KDC.
861 * @param context Kerberos 5 context.
862 * @param flag boolean flag to select if the use the admin KDC or not.
867 void KRB5_LIB_FUNCTION
868 krb5_set_use_admin_kdc (krb5_context context, krb5_boolean flag)
870 context->use_admin_kdc = flag;
874 * Make the kerberos library default to the admin KDC.
876 * @param context Kerberos 5 context.
878 * @return boolean flag to telling the context will use admin KDC as the default KDC.
883 krb5_boolean KRB5_LIB_FUNCTION
884 krb5_get_use_admin_kdc (krb5_context context)
886 return context->use_admin_kdc;
890 * Add extra address to the address list that the library will add to
891 * the client's address list when communicating with the KDC.
893 * @param context Kerberos 5 context.
894 * @param addresses addreses to add
896 * @return Returns 0 to indicate success. Otherwise an kerberos et
897 * error code is returned, see krb5_get_error_message().
902 krb5_error_code KRB5_LIB_FUNCTION
903 krb5_add_extra_addresses(krb5_context context, krb5_addresses *addresses)
906 if(context->extra_addresses)
907 return krb5_append_addresses(context,
908 context->extra_addresses, addresses);
910 return krb5_set_extra_addresses(context, addresses);
914 * Set extra address to the address list that the library will add to
915 * the client's address list when communicating with the KDC.
917 * @param context Kerberos 5 context.
918 * @param addresses addreses to set
920 * @return Returns 0 to indicate success. Otherwise an kerberos et
921 * error code is returned, see krb5_get_error_message().
926 krb5_error_code KRB5_LIB_FUNCTION
927 krb5_set_extra_addresses(krb5_context context, const krb5_addresses *addresses)
929 if(context->extra_addresses)
930 krb5_free_addresses(context, context->extra_addresses);
932 if(addresses == NULL) {
933 if(context->extra_addresses != NULL) {
934 free(context->extra_addresses);
935 context->extra_addresses = NULL;
939 if(context->extra_addresses == NULL) {
940 context->extra_addresses = malloc(sizeof(*context->extra_addresses));
941 if(context->extra_addresses == NULL) {
942 krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
946 return krb5_copy_addresses(context, addresses, context->extra_addresses);
950 * Get extra address to the address list that the library will add to
951 * the client's address list when communicating with the KDC.
953 * @param context Kerberos 5 context.
954 * @param addresses addreses to set
956 * @return Returns 0 to indicate success. Otherwise an kerberos et
957 * error code is returned, see krb5_get_error_message().
962 krb5_error_code KRB5_LIB_FUNCTION
963 krb5_get_extra_addresses(krb5_context context, krb5_addresses *addresses)
965 if(context->extra_addresses == NULL) {
966 memset(addresses, 0, sizeof(*addresses));
969 return krb5_copy_addresses(context,context->extra_addresses, addresses);
973 * Add extra addresses to ignore when fetching addresses from the
974 * underlaying operating system.
976 * @param context Kerberos 5 context.
977 * @param addresses addreses to ignore
979 * @return Returns 0 to indicate success. Otherwise an kerberos et
980 * error code is returned, see krb5_get_error_message().
985 krb5_error_code KRB5_LIB_FUNCTION
986 krb5_add_ignore_addresses(krb5_context context, krb5_addresses *addresses)
989 if(context->ignore_addresses)
990 return krb5_append_addresses(context,
991 context->ignore_addresses, addresses);
993 return krb5_set_ignore_addresses(context, addresses);
997 * Set extra addresses to ignore when fetching addresses from the
998 * underlaying operating system.
1000 * @param context Kerberos 5 context.
1001 * @param addresses addreses to ignore
1003 * @return Returns 0 to indicate success. Otherwise an kerberos et
1004 * error code is returned, see krb5_get_error_message().
1009 krb5_error_code KRB5_LIB_FUNCTION
1010 krb5_set_ignore_addresses(krb5_context context, const krb5_addresses *addresses)
1012 if(context->ignore_addresses)
1013 krb5_free_addresses(context, context->ignore_addresses);
1014 if(addresses == NULL) {
1015 if(context->ignore_addresses != NULL) {
1016 free(context->ignore_addresses);
1017 context->ignore_addresses = NULL;
1021 if(context->ignore_addresses == NULL) {
1022 context->ignore_addresses = malloc(sizeof(*context->ignore_addresses));
1023 if(context->ignore_addresses == NULL) {
1024 krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
1028 return krb5_copy_addresses(context, addresses, context->ignore_addresses);
1032 * Get extra addresses to ignore when fetching addresses from the
1033 * underlaying operating system.
1035 * @param context Kerberos 5 context.
1036 * @param addresses list addreses ignored
1038 * @return Returns 0 to indicate success. Otherwise an kerberos et
1039 * error code is returned, see krb5_get_error_message().
1044 krb5_error_code KRB5_LIB_FUNCTION
1045 krb5_get_ignore_addresses(krb5_context context, krb5_addresses *addresses)
1047 if(context->ignore_addresses == NULL) {
1048 memset(addresses, 0, sizeof(*addresses));
1051 return krb5_copy_addresses(context, context->ignore_addresses, addresses);
1055 * Set version of fcache that the library should use.
1057 * @param context Kerberos 5 context.
1058 * @param version version number.
1060 * @return Returns 0 to indicate success. Otherwise an kerberos et
1061 * error code is returned, see krb5_get_error_message().
1066 krb5_error_code KRB5_LIB_FUNCTION
1067 krb5_set_fcache_version(krb5_context context, int version)
1069 context->fcache_vno = version;
1074 * Get version of fcache that the library should use.
1076 * @param context Kerberos 5 context.
1077 * @param version version number.
1079 * @return Returns 0 to indicate success. Otherwise an kerberos et
1080 * error code is returned, see krb5_get_error_message().
1085 krb5_error_code KRB5_LIB_FUNCTION
1086 krb5_get_fcache_version(krb5_context context, int *version)
1088 *version = context->fcache_vno;
1093 * Runtime check if the Kerberos library was complied with thread support.
1095 * @return TRUE if the library was compiled with thread support, FALSE if not.
1101 krb5_boolean KRB5_LIB_FUNCTION
1102 krb5_is_thread_safe(void)
1104 #ifdef ENABLE_PTHREAD_SUPPORT
1112 * Set if the library should use DNS to canonicalize hostnames.
1114 * @param context Kerberos 5 context.
1115 * @param flag if its dns canonicalizion is used or not.
1120 void KRB5_LIB_FUNCTION
1121 krb5_set_dns_canonicalize_hostname (krb5_context context, krb5_boolean flag)
1124 context->flags |= KRB5_CTX_F_DNS_CANONICALIZE_HOSTNAME;
1126 context->flags &= ~KRB5_CTX_F_DNS_CANONICALIZE_HOSTNAME;
1130 * Get if the library uses DNS to canonicalize hostnames.
1132 * @param context Kerberos 5 context.
1134 * @return return non zero if the library uses DNS to canonicalize hostnames.
1139 krb5_boolean KRB5_LIB_FUNCTION
1140 krb5_get_dns_canonicalize_hostname (krb5_context context)
1142 return (context->flags & KRB5_CTX_F_DNS_CANONICALIZE_HOSTNAME) ? 1 : 0;
1146 * Get current offset in time to the KDC.
1148 * @param context Kerberos 5 context.
1149 * @param sec seconds part of offset.
1150 * @param usec micro seconds part of offset.
1152 * @return returns zero
1157 krb5_error_code KRB5_LIB_FUNCTION
1158 krb5_get_kdc_sec_offset (krb5_context context, int32_t *sec, int32_t *usec)
1161 *sec = context->kdc_sec_offset;
1163 *usec = context->kdc_usec_offset;
1168 * Set current offset in time to the KDC.
1170 * @param context Kerberos 5 context.
1171 * @param sec seconds part of offset.
1172 * @param usec micro seconds part of offset.
1174 * @return returns zero
1179 krb5_error_code KRB5_LIB_FUNCTION
1180 krb5_set_kdc_sec_offset (krb5_context context, int32_t sec, int32_t usec)
1182 context->kdc_sec_offset = sec;
1184 context->kdc_usec_offset = usec;
1189 * Get max time skew allowed.
1191 * @param context Kerberos 5 context.
1193 * @return timeskew in seconds.
1198 time_t KRB5_LIB_FUNCTION
1199 krb5_get_max_time_skew (krb5_context context)
1201 return context->max_skew;
1205 * Set max time skew allowed.
1207 * @param context Kerberos 5 context.
1208 * @param t timeskew in seconds.
1213 void KRB5_LIB_FUNCTION
1214 krb5_set_max_time_skew (krb5_context context, time_t t)
1216 context->max_skew = t;
1220 * Init encryption types in len, val with etypes.
1222 * @param context Kerberos 5 context.
1223 * @param len output length of val.
1224 * @param val output array of enctypes.
1225 * @param etypes etypes to set val and len to, if NULL, use default enctypes.
1227 * @return Returns 0 to indicate success. Otherwise an kerberos et
1228 * error code is returned, see krb5_get_error_message().
1233 krb5_error_code KRB5_LIB_FUNCTION
1234 krb5_init_etype (krb5_context context,
1237 const krb5_enctype *etypes)
1240 krb5_error_code ret;
1241 krb5_enctype *tmp = NULL;
1244 if (etypes == NULL) {
1245 ret = krb5_get_default_in_tkt_etypes(context, &tmp);
1251 for (i = 0; etypes[i]; ++i)
1254 *val = malloc(i * sizeof(**val));
1255 if (i != 0 && *val == NULL) {
1257 krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
1270 * Allow homedir accces
1273 static HEIMDAL_MUTEX homedir_mutex = HEIMDAL_MUTEX_INITIALIZER;
1274 static krb5_boolean allow_homedir = TRUE;
1277 _krb5_homedir_access(krb5_context context)
1281 /* is never allowed for root */
1285 if (context && (context->flags & KRB5_CTX_F_HOMEDIR_ACCESS) == 0)
1288 HEIMDAL_MUTEX_lock(&homedir_mutex);
1289 allow = allow_homedir;
1290 HEIMDAL_MUTEX_unlock(&homedir_mutex);
1295 * Enable and disable home directory access on either the global state
1296 * or the krb5_context state. By calling krb5_set_home_dir_access()
1297 * with context set to NULL, the global state is configured otherwise
1298 * the state for the krb5_context is modified.
1300 * For home directory access to be allowed, both the global state and
1301 * the krb5_context state have to be allowed.
1303 * Administrator (root user), never uses the home directory.
1305 * @param context a Kerberos 5 context or NULL
1306 * @param allow allow if TRUE home directory
1307 * @return the old value
1312 krb5_set_home_dir_access(krb5_context context, krb5_boolean allow)
1316 old = (context->flags & KRB5_CTX_F_HOMEDIR_ACCESS) ? TRUE : FALSE;
1318 context->flags |= KRB5_CTX_F_HOMEDIR_ACCESS;
1320 context->flags &= ~KRB5_CTX_F_HOMEDIR_ACCESS;
1322 HEIMDAL_MUTEX_lock(&homedir_mutex);
1323 old = allow_homedir;
1324 allow_homedir = allow;
1325 HEIMDAL_MUTEX_unlock(&homedir_mutex);