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"
37 #define INIT_FIELD(C, T, E, D, F) \
38 (C)->E = krb5_config_get_ ## T ## _default ((C), NULL, (D), \
39 "libdefaults", F, NULL)
41 #define INIT_FLAG(C, O, V, D, F) \
43 if (krb5_config_get_bool_default((C), NULL, (D),"libdefaults", F, NULL)) { \
49 * Set the list of etypes `ret_etypes' from the configuration variable
53 static krb5_error_code
54 set_etypes (krb5_context context,
56 krb5_enctype **ret_enctypes)
59 krb5_enctype *etypes = NULL;
61 etypes_str = krb5_config_get_strings(context, NULL, "libdefaults",
65 for(i = 0; etypes_str[i]; i++);
66 etypes = malloc((i+1) * sizeof(*etypes));
68 krb5_config_free_strings (etypes_str);
69 krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
72 for(j = 0, k = 0; j < i; j++) {
74 if(krb5_string_to_enctype(context, etypes_str[j], &e) != 0)
76 if (krb5_enctype_valid(context, e) != 0)
80 etypes[k] = ETYPE_NULL;
81 krb5_config_free_strings(etypes_str);
83 *ret_enctypes = etypes;
88 * read variables from the configuration file and set in `context'
91 static krb5_error_code
92 init_context_from_config_file(krb5_context context)
97 krb5_enctype *tmptypes;
99 INIT_FIELD(context, time, max_skew, 5 * 60, "clockskew");
100 INIT_FIELD(context, time, kdc_timeout, 3, "kdc_timeout");
101 INIT_FIELD(context, int, max_retries, 3, "max_retries");
103 INIT_FIELD(context, string, http_proxy, NULL, "http_proxy");
105 ret = set_etypes (context, "default_etypes", &tmptypes);
108 free(context->etypes);
109 context->etypes = tmptypes;
111 ret = set_etypes (context, "default_etypes_des", &tmptypes);
114 free(context->etypes_des);
115 context->etypes_des = tmptypes;
117 /* default keytab name */
120 tmp = getenv("KRB5_KTNAME");
122 context->default_keytab = tmp;
124 INIT_FIELD(context, string, default_keytab,
125 KEYTAB_DEFAULT, "default_keytab_name");
127 INIT_FIELD(context, string, default_keytab_modify,
128 NULL, "default_keytab_modify_name");
130 INIT_FIELD(context, string, time_fmt,
131 "%Y-%m-%dT%H:%M:%S", "time_format");
133 INIT_FIELD(context, string, date_fmt,
134 "%Y-%m-%d", "date_format");
136 INIT_FIELD(context, bool, log_utc,
141 /* init dns-proxy slime */
142 tmp = krb5_config_get_string(context, NULL, "libdefaults",
145 roken_gethostby_setup(context->http_proxy, tmp);
146 krb5_free_host_realm (context, context->default_realms);
147 context->default_realms = NULL;
150 krb5_addresses addresses;
153 krb5_set_extra_addresses(context, NULL);
154 adr = krb5_config_get_strings(context, NULL,
158 memset(&addresses, 0, sizeof(addresses));
159 for(a = adr; a && *a; a++) {
160 ret = krb5_parse_address(context, *a, &addresses);
162 krb5_add_extra_addresses(context, &addresses);
163 krb5_free_addresses(context, &addresses);
166 krb5_config_free_strings(adr);
168 krb5_set_ignore_addresses(context, NULL);
169 adr = krb5_config_get_strings(context, NULL,
173 memset(&addresses, 0, sizeof(addresses));
174 for(a = adr; a && *a; a++) {
175 ret = krb5_parse_address(context, *a, &addresses);
177 krb5_add_ignore_addresses(context, &addresses);
178 krb5_free_addresses(context, &addresses);
181 krb5_config_free_strings(adr);
184 INIT_FIELD(context, bool, scan_interfaces, TRUE, "scan_interfaces");
185 INIT_FIELD(context, int, fcache_vno, 0, "fcache_version");
186 /* prefer dns_lookup_kdc over srv_lookup. */
187 INIT_FIELD(context, bool, srv_lookup, TRUE, "srv_lookup");
188 INIT_FIELD(context, bool, srv_lookup, context->srv_lookup, "dns_lookup_kdc");
189 INIT_FIELD(context, int, large_msg_size, 1400, "large_message_size");
190 INIT_FLAG(context, flags, KRB5_CTX_F_DNS_CANONICALIZE_HOSTNAME, TRUE, "dns_canonicalize_hostname");
191 INIT_FLAG(context, flags, KRB5_CTX_F_CHECK_PAC, TRUE, "check_pac");
192 context->default_cc_name = NULL;
193 context->default_cc_name_set = 0;
195 ret = krb5_config_get_bool_default(context, NULL, FALSE,
197 "allow_weak_crypto", NULL);
199 krb5_enctype_enable(context, ETYPE_DES_CBC_CRC);
200 krb5_enctype_enable(context, ETYPE_DES_CBC_MD4);
201 krb5_enctype_enable(context, ETYPE_DES_CBC_MD5);
202 krb5_enctype_enable(context, ETYPE_DES_CBC_NONE);
203 krb5_enctype_enable(context, ETYPE_DES_CFB64_NONE);
204 krb5_enctype_enable(context, ETYPE_DES_PCBC_NONE);
207 s = krb5_config_get_strings(context, NULL, "logging", "krb5", NULL);
210 krb5_initlog(context, "libkrb5", &context->debug_dest);
212 krb5_addlog_dest(context, context->debug_dest, *p);
213 krb5_config_free_strings(s);
220 static krb5_error_code
221 cc_ops_register(krb5_context context)
223 context->cc_ops = NULL;
224 context->num_cc_ops = 0;
226 krb5_cc_register(context, &krb5_acc_ops, TRUE);
227 krb5_cc_register(context, &krb5_fcc_ops, TRUE);
228 krb5_cc_register(context, &krb5_mcc_ops, TRUE);
229 krb5_cc_register(context, &krb5_scc_ops, TRUE);
231 krb5_cc_register(context, &krb5_kcm_ops, TRUE);
236 static krb5_error_code
237 kt_ops_register(krb5_context context)
239 context->num_kt_types = 0;
240 context->kt_types = NULL;
242 krb5_kt_register (context, &krb5_fkt_ops);
243 krb5_kt_register (context, &krb5_wrfkt_ops);
244 krb5_kt_register (context, &krb5_javakt_ops);
245 krb5_kt_register (context, &krb5_mkt_ops);
246 #ifndef HEIMDAL_SMALLER
247 krb5_kt_register (context, &krb5_akf_ops);
249 krb5_kt_register (context, &krb5_any_ops);
255 * Initializes the context structure and reads the configuration file
256 * /etc/krb5.conf. The structure should be freed by calling
257 * krb5_free_context() when it is no longer being used.
259 * @param context pointer to returned context
261 * @return Returns 0 to indicate success. Otherwise an errno code is
262 * returned. Failure means either that something bad happened during
263 * initialization (typically ENOMEM) or that Kerberos should not be
269 krb5_error_code KRB5_LIB_FUNCTION
270 krb5_init_context(krb5_context *context)
278 /* should have a run_once */
279 bindtextdomain(HEIMDAL_TEXTDOMAIN, HEIMDAL_LOCALEDIR);
281 p = calloc(1, sizeof(*p));
285 p->mutex = malloc(sizeof(HEIMDAL_MUTEX));
286 if (p->mutex == NULL) {
290 HEIMDAL_MUTEX_init(p->mutex);
292 p->flags |= KRB5_CTX_F_HOMEDIR_ACCESS;
294 ret = krb5_get_default_config_files(&files);
297 ret = krb5_set_config_files(p, files);
298 krb5_free_config_files(files);
302 /* init error tables */
309 krb5_free_context(p);
316 #ifndef HEIMDAL_SMALLER
322 static krb5_error_code
323 copy_etypes (krb5_context context,
324 krb5_enctype *enctypes,
325 krb5_enctype **ret_enctypes)
329 for (i = 0; enctypes[i]; i++)
333 *ret_enctypes = malloc(sizeof(ret_enctypes[0]) * i);
334 if (*ret_enctypes == NULL) {
335 krb5_set_error_message(context, ENOMEM,
336 N_("malloc: out of memory", ""));
339 memcpy(*ret_enctypes, enctypes, sizeof(ret_enctypes[0]) * i);
344 * Make a copy for the Kerberos 5 context, the new krb5_context shoud
345 * be freed with krb5_free_context().
347 * @param context the Kerberos context to copy
348 * @param out the copy of the Kerberos, set to NULL error.
350 * @return Returns 0 to indicate success. Otherwise an kerberos et
351 * error code is returned, see krb5_get_error_message().
356 krb5_error_code KRB5_LIB_FUNCTION
357 krb5_copy_context(krb5_context context, krb5_context *out)
364 p = calloc(1, sizeof(*p));
366 krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
370 p->mutex = malloc(sizeof(HEIMDAL_MUTEX));
371 if (p->mutex == NULL) {
372 krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
376 HEIMDAL_MUTEX_init(p->mutex);
379 if (context->default_cc_name)
380 p->default_cc_name = strdup(context->default_cc_name);
381 if (context->default_cc_name_env)
382 p->default_cc_name_env = strdup(context->default_cc_name_env);
384 if (context->etypes) {
385 ret = copy_etypes(context, context->etypes, &p->etypes);
389 if (context->etypes_des) {
390 ret = copy_etypes(context, context->etypes_des, &p->etypes_des);
395 if (context->default_realms) {
396 ret = krb5_copy_host_realm(context,
397 context->default_realms, &p->default_realms);
402 ret = _krb5_config_copy(context, context->cf, &p->cf);
406 /* XXX should copy */
412 if(context->warn_dest != NULL)
414 if(context->debug_dest != NULL)
418 ret = krb5_set_extra_addresses(p, context->extra_addresses);
421 ret = krb5_set_extra_addresses(p, context->ignore_addresses);
425 ret = _krb5_copy_send_to_kdc_func(p, context);
434 krb5_free_context(p);
441 * Frees the krb5_context allocated by krb5_init_context().
443 * @param context context to be freed.
448 void KRB5_LIB_FUNCTION
449 krb5_free_context(krb5_context context)
451 if (context->default_cc_name)
452 free(context->default_cc_name);
453 if (context->default_cc_name_env)
454 free(context->default_cc_name_env);
455 free(context->etypes);
456 free(context->etypes_des);
457 krb5_free_host_realm (context, context->default_realms);
458 krb5_config_file_free (context, context->cf);
459 free_error_table (context->et_list);
460 free(context->cc_ops);
461 free(context->kt_types);
462 krb5_clear_error_message(context);
463 if(context->warn_dest != NULL)
464 krb5_closelog(context, context->warn_dest);
465 if(context->debug_dest != NULL)
466 krb5_closelog(context, context->debug_dest);
467 krb5_set_extra_addresses(context, NULL);
468 krb5_set_ignore_addresses(context, NULL);
469 krb5_set_send_to_kdc_func(context, NULL, NULL);
471 HEIMDAL_MUTEX_destroy(context->mutex);
472 free(context->mutex);
474 memset(context, 0, sizeof(*context));
479 * Reinit the context from a new set of filenames.
481 * @param context context to add configuration too.
482 * @param filenames array of filenames, end of list is indicated with a NULL filename.
484 * @return Returns 0 to indicate success. Otherwise an kerberos et
485 * error code is returned, see krb5_get_error_message().
490 krb5_error_code KRB5_LIB_FUNCTION
491 krb5_set_config_files(krb5_context context, char **filenames)
494 krb5_config_binding *tmp = NULL;
495 while(filenames != NULL && *filenames != NULL && **filenames != '\0') {
496 ret = krb5_config_parse_file_multi(context, *filenames, &tmp);
497 if(ret != 0 && ret != ENOENT && ret != EACCES) {
498 krb5_config_file_free(context, tmp);
504 /* with this enabled and if there are no config files, Kerberos is
505 considererd disabled */
509 krb5_config_file_free(context, context->cf);
511 ret = init_context_from_config_file(context);
515 static krb5_error_code
516 add_file(char ***pfilenames, int *len, char *file)
518 char **pp = *pfilenames;
521 for(i = 0; i < *len; i++) {
522 if(strcmp(pp[i], file) == 0) {
528 pp = realloc(*pfilenames, (*len + 2) * sizeof(*pp));
542 * `pq' isn't free, it's up the the caller
545 krb5_error_code KRB5_LIB_FUNCTION
546 krb5_prepend_config_files(const char *filelist, char **pq, char ***ret_pp)
561 l = strsep_copy(&q, ":", NULL, 0);
566 krb5_free_config_files(pp);
569 (void)strsep_copy(&p, ":", fn, l + 1);
570 ret = add_file(&pp, &len, fn);
572 krb5_free_config_files(pp);
580 for (i = 0; pq[i] != NULL; i++) {
583 krb5_free_config_files(pp);
586 ret = add_file(&pp, &len, fn);
588 krb5_free_config_files(pp);
599 * Prepend the filename to the global configuration list.
601 * @param filelist a filename to add to the default list of filename
602 * @param pfilenames return array of filenames, should be freed with krb5_free_config_files().
604 * @return Returns 0 to indicate success. Otherwise an kerberos et
605 * error code is returned, see krb5_get_error_message().
610 krb5_error_code KRB5_LIB_FUNCTION
611 krb5_prepend_config_files_default(const char *filelist, char ***pfilenames)
614 char **defpp, **pp = NULL;
616 ret = krb5_get_default_config_files(&defpp);
620 ret = krb5_prepend_config_files(filelist, defpp, &pp);
621 krb5_free_config_files(defpp);
630 * Get the global configuration list.
632 * @param pfilenames return array of filenames, should be freed with krb5_free_config_files().
634 * @return Returns 0 to indicate success. Otherwise an kerberos et
635 * error code is returned, see krb5_get_error_message().
640 krb5_error_code KRB5_LIB_FUNCTION
641 krb5_get_default_config_files(char ***pfilenames)
643 const char *files = NULL;
645 if (pfilenames == NULL)
648 files = getenv("KRB5_CONFIG");
650 files = krb5_config_file;
652 return krb5_prepend_config_files(files, NULL, pfilenames);
656 * Free a list of configuration files.
658 * @param filenames list, terminated with a NULL pointer, to be
659 * freed. NULL is an valid argument.
661 * @return Returns 0 to indicate success. Otherwise an kerberos et
662 * error code is returned, see krb5_get_error_message().
667 void KRB5_LIB_FUNCTION
668 krb5_free_config_files(char **filenames)
671 for(p = filenames; p && *p != NULL; p++)
677 * Returns the list of Kerberos encryption types sorted in order of
678 * most preferred to least preferred encryption type. Note that some
679 * encryption types might be disabled, so you need to check with
680 * krb5_enctype_valid() before using the encryption type.
682 * @return list of enctypes, terminated with ETYPE_NULL. Its a static
683 * array completed into the Kerberos library so the content doesn't
689 const krb5_enctype * KRB5_LIB_FUNCTION
690 krb5_kerberos_enctypes(krb5_context context)
692 static const krb5_enctype p[] = {
693 ETYPE_AES256_CTS_HMAC_SHA1_96,
694 ETYPE_AES128_CTS_HMAC_SHA1_96,
697 ETYPE_ARCFOUR_HMAC_MD5,
707 * set `etype' to a malloced list of the default enctypes
710 static krb5_error_code
711 default_etypes(krb5_context context, krb5_enctype **etype)
713 const krb5_enctype *p;
714 krb5_enctype *e = NULL, *ep;
717 p = krb5_kerberos_enctypes(context);
719 for (i = 0; p[i] != ETYPE_NULL; i++) {
720 if (krb5_enctype_valid(context, p[i]) != 0)
722 ep = realloc(e, (n + 2) * sizeof(*e));
725 krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
730 e[n + 1] = ETYPE_NULL;
738 * Set the default encryption types that will be use in communcation
739 * with the KDC, clients and servers.
741 * @param context Kerberos 5 context.
742 * @param etypes Encryption types, array terminated with ETYPE_NULL (0).
744 * @return Returns 0 to indicate success. Otherwise an kerberos et
745 * error code is returned, see krb5_get_error_message().
750 krb5_error_code KRB5_LIB_FUNCTION
751 krb5_set_default_in_tkt_etypes(krb5_context context,
752 const krb5_enctype *etypes)
754 krb5_enctype *p = NULL;
758 for (i = 0; etypes[i]; ++i) {
760 ret = krb5_enctype_valid(context, etypes[i]);
767 krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
770 memmove(p, etypes, i * sizeof(krb5_enctype));
773 free(context->etypes);
779 * Get the default encryption types that will be use in communcation
780 * with the KDC, clients and servers.
782 * @param context Kerberos 5 context.
783 * @param etypes Encryption types, array terminated with
784 * ETYPE_NULL(0), caller should free array with krb5_xfree():
786 * @return Returns 0 to indicate success. Otherwise an kerberos et
787 * error code is returned, see krb5_get_error_message().
792 krb5_error_code KRB5_LIB_FUNCTION
793 krb5_get_default_in_tkt_etypes(krb5_context context,
794 krb5_enctype **etypes)
800 if(context->etypes) {
801 for(i = 0; context->etypes[i]; i++);
805 krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
808 memmove(p, context->etypes, i * sizeof(krb5_enctype));
810 ret = default_etypes(context, &p);
819 * Return the error string for the error code. The caller must not
822 * @param context Kerberos 5 context.
823 * @param code Kerberos error code.
825 * @return the error message matching code
830 const char* KRB5_LIB_FUNCTION
831 krb5_get_err_text(krb5_context context, krb5_error_code code)
833 const char *p = NULL;
835 p = com_right(context->et_list, code);
844 * Init the built-in ets in the Kerberos library.
846 * @param context kerberos context to add the ets too
851 void KRB5_LIB_FUNCTION
852 krb5_init_ets(krb5_context context)
854 if(context->et_list == NULL){
855 krb5_add_et_list(context, initialize_krb5_error_table_r);
856 krb5_add_et_list(context, initialize_asn1_error_table_r);
857 krb5_add_et_list(context, initialize_heim_error_table_r);
859 krb5_add_et_list(context, initialize_k524_error_table_r);
861 #ifdef COM_ERR_BINDDOMAIN_krb5
862 bindtextdomain(COM_ERR_BINDDOMAIN_krb5, HEIMDAL_LOCALEDIR);
863 bindtextdomain(COM_ERR_BINDDOMAIN_asn1, HEIMDAL_LOCALEDIR);
864 bindtextdomain(COM_ERR_BINDDOMAIN_heim, HEIMDAL_LOCALEDIR);
865 bindtextdomain(COM_ERR_BINDDOMAIN_k524, HEIMDAL_LOCALEDIR);
869 krb5_add_et_list(context, initialize_hx_error_table_r);
870 #ifdef COM_ERR_BINDDOMAIN_hx
871 bindtextdomain(COM_ERR_BINDDOMAIN_hx, HEIMDAL_LOCALEDIR);
878 * Make the kerberos library default to the admin KDC.
880 * @param context Kerberos 5 context.
881 * @param flag boolean flag to select if the use the admin KDC or not.
886 void KRB5_LIB_FUNCTION
887 krb5_set_use_admin_kdc (krb5_context context, krb5_boolean flag)
889 context->use_admin_kdc = flag;
893 * Make the kerberos library default to the admin KDC.
895 * @param context Kerberos 5 context.
897 * @return boolean flag to telling the context will use admin KDC as the default KDC.
902 krb5_boolean KRB5_LIB_FUNCTION
903 krb5_get_use_admin_kdc (krb5_context context)
905 return context->use_admin_kdc;
909 * Add extra address to the address list that the library will add to
910 * the client's address list when communicating with the KDC.
912 * @param context Kerberos 5 context.
913 * @param addresses addreses to add
915 * @return Returns 0 to indicate success. Otherwise an kerberos et
916 * error code is returned, see krb5_get_error_message().
921 krb5_error_code KRB5_LIB_FUNCTION
922 krb5_add_extra_addresses(krb5_context context, krb5_addresses *addresses)
925 if(context->extra_addresses)
926 return krb5_append_addresses(context,
927 context->extra_addresses, addresses);
929 return krb5_set_extra_addresses(context, addresses);
933 * Set extra address to the address list that the library will add to
934 * the client's address list when communicating with the KDC.
936 * @param context Kerberos 5 context.
937 * @param addresses addreses to set
939 * @return Returns 0 to indicate success. Otherwise an kerberos et
940 * error code is returned, see krb5_get_error_message().
945 krb5_error_code KRB5_LIB_FUNCTION
946 krb5_set_extra_addresses(krb5_context context, const krb5_addresses *addresses)
948 if(context->extra_addresses)
949 krb5_free_addresses(context, context->extra_addresses);
951 if(addresses == NULL) {
952 if(context->extra_addresses != NULL) {
953 free(context->extra_addresses);
954 context->extra_addresses = NULL;
958 if(context->extra_addresses == NULL) {
959 context->extra_addresses = malloc(sizeof(*context->extra_addresses));
960 if(context->extra_addresses == NULL) {
961 krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
965 return krb5_copy_addresses(context, addresses, context->extra_addresses);
969 * Get extra address to the address list that the library will add to
970 * the client's address list when communicating with the KDC.
972 * @param context Kerberos 5 context.
973 * @param addresses addreses to set
975 * @return Returns 0 to indicate success. Otherwise an kerberos et
976 * error code is returned, see krb5_get_error_message().
981 krb5_error_code KRB5_LIB_FUNCTION
982 krb5_get_extra_addresses(krb5_context context, krb5_addresses *addresses)
984 if(context->extra_addresses == NULL) {
985 memset(addresses, 0, sizeof(*addresses));
988 return krb5_copy_addresses(context,context->extra_addresses, addresses);
992 * Add extra addresses to ignore when fetching addresses from the
993 * underlaying operating system.
995 * @param context Kerberos 5 context.
996 * @param addresses addreses to ignore
998 * @return Returns 0 to indicate success. Otherwise an kerberos et
999 * error code is returned, see krb5_get_error_message().
1004 krb5_error_code KRB5_LIB_FUNCTION
1005 krb5_add_ignore_addresses(krb5_context context, krb5_addresses *addresses)
1008 if(context->ignore_addresses)
1009 return krb5_append_addresses(context,
1010 context->ignore_addresses, addresses);
1012 return krb5_set_ignore_addresses(context, addresses);
1016 * Set extra addresses to ignore when fetching addresses from the
1017 * underlaying operating system.
1019 * @param context Kerberos 5 context.
1020 * @param addresses addreses to ignore
1022 * @return Returns 0 to indicate success. Otherwise an kerberos et
1023 * error code is returned, see krb5_get_error_message().
1028 krb5_error_code KRB5_LIB_FUNCTION
1029 krb5_set_ignore_addresses(krb5_context context, const krb5_addresses *addresses)
1031 if(context->ignore_addresses)
1032 krb5_free_addresses(context, context->ignore_addresses);
1033 if(addresses == NULL) {
1034 if(context->ignore_addresses != NULL) {
1035 free(context->ignore_addresses);
1036 context->ignore_addresses = NULL;
1040 if(context->ignore_addresses == NULL) {
1041 context->ignore_addresses = malloc(sizeof(*context->ignore_addresses));
1042 if(context->ignore_addresses == NULL) {
1043 krb5_set_error_message (context, ENOMEM, N_("malloc: out of memory", ""));
1047 return krb5_copy_addresses(context, addresses, context->ignore_addresses);
1051 * Get extra addresses to ignore when fetching addresses from the
1052 * underlaying operating system.
1054 * @param context Kerberos 5 context.
1055 * @param addresses list addreses ignored
1057 * @return Returns 0 to indicate success. Otherwise an kerberos et
1058 * error code is returned, see krb5_get_error_message().
1063 krb5_error_code KRB5_LIB_FUNCTION
1064 krb5_get_ignore_addresses(krb5_context context, krb5_addresses *addresses)
1066 if(context->ignore_addresses == NULL) {
1067 memset(addresses, 0, sizeof(*addresses));
1070 return krb5_copy_addresses(context, context->ignore_addresses, addresses);
1074 * Set 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_set_fcache_version(krb5_context context, int version)
1088 context->fcache_vno = version;
1093 * Get version of fcache that the library should use.
1095 * @param context Kerberos 5 context.
1096 * @param version version number.
1098 * @return Returns 0 to indicate success. Otherwise an kerberos et
1099 * error code is returned, see krb5_get_error_message().
1104 krb5_error_code KRB5_LIB_FUNCTION
1105 krb5_get_fcache_version(krb5_context context, int *version)
1107 *version = context->fcache_vno;
1112 * Runtime check if the Kerberos library was complied with thread support.
1114 * @return TRUE if the library was compiled with thread support, FALSE if not.
1120 krb5_boolean KRB5_LIB_FUNCTION
1121 krb5_is_thread_safe(void)
1123 #ifdef ENABLE_PTHREAD_SUPPORT
1131 * Set if the library should use DNS to canonicalize hostnames.
1133 * @param context Kerberos 5 context.
1134 * @param flag if its dns canonicalizion is used or not.
1139 void KRB5_LIB_FUNCTION
1140 krb5_set_dns_canonicalize_hostname (krb5_context context, krb5_boolean flag)
1143 context->flags |= KRB5_CTX_F_DNS_CANONICALIZE_HOSTNAME;
1145 context->flags &= ~KRB5_CTX_F_DNS_CANONICALIZE_HOSTNAME;
1149 * Get if the library uses DNS to canonicalize hostnames.
1151 * @param context Kerberos 5 context.
1153 * @return return non zero if the library uses DNS to canonicalize hostnames.
1158 krb5_boolean KRB5_LIB_FUNCTION
1159 krb5_get_dns_canonicalize_hostname (krb5_context context)
1161 return (context->flags & KRB5_CTX_F_DNS_CANONICALIZE_HOSTNAME) ? 1 : 0;
1165 * Get current offset in time to the KDC.
1167 * @param context Kerberos 5 context.
1168 * @param sec seconds part of offset.
1169 * @param usec micro seconds part of offset.
1171 * @return returns zero
1176 krb5_error_code KRB5_LIB_FUNCTION
1177 krb5_get_kdc_sec_offset (krb5_context context, int32_t *sec, int32_t *usec)
1180 *sec = context->kdc_sec_offset;
1182 *usec = context->kdc_usec_offset;
1187 * Set current offset in time to the KDC.
1189 * @param context Kerberos 5 context.
1190 * @param sec seconds part of offset.
1191 * @param usec micro seconds part of offset.
1193 * @return returns zero
1198 krb5_error_code KRB5_LIB_FUNCTION
1199 krb5_set_kdc_sec_offset (krb5_context context, int32_t sec, int32_t usec)
1201 context->kdc_sec_offset = sec;
1203 context->kdc_usec_offset = usec;
1208 * Get max time skew allowed.
1210 * @param context Kerberos 5 context.
1212 * @return timeskew in seconds.
1217 time_t KRB5_LIB_FUNCTION
1218 krb5_get_max_time_skew (krb5_context context)
1220 return context->max_skew;
1224 * Set max time skew allowed.
1226 * @param context Kerberos 5 context.
1227 * @param t timeskew in seconds.
1232 void KRB5_LIB_FUNCTION
1233 krb5_set_max_time_skew (krb5_context context, time_t t)
1235 context->max_skew = t;
1239 * Init encryption types in len, val with etypes.
1241 * @param context Kerberos 5 context.
1242 * @param len output length of val.
1243 * @param val output array of enctypes.
1244 * @param etypes etypes to set val and len to, if NULL, use default enctypes.
1246 * @return Returns 0 to indicate success. Otherwise an kerberos et
1247 * error code is returned, see krb5_get_error_message().
1252 krb5_error_code KRB5_LIB_FUNCTION
1253 krb5_init_etype (krb5_context context,
1256 const krb5_enctype *etypes)
1259 krb5_error_code ret;
1260 krb5_enctype *tmp = NULL;
1263 if (etypes == NULL) {
1264 ret = krb5_get_default_in_tkt_etypes(context, &tmp);
1270 for (i = 0; etypes[i]; ++i)
1273 *val = malloc(i * sizeof(**val));
1274 if (i != 0 && *val == NULL) {
1276 krb5_set_error_message(context, ret, N_("malloc: out of memory", ""));
1289 * Allow homedir accces
1292 static HEIMDAL_MUTEX homedir_mutex = HEIMDAL_MUTEX_INITIALIZER;
1293 static krb5_boolean allow_homedir = TRUE;
1296 _krb5_homedir_access(krb5_context context)
1300 /* is never allowed for root */
1304 if (context && (context->flags & KRB5_CTX_F_HOMEDIR_ACCESS) == 0)
1307 HEIMDAL_MUTEX_lock(&homedir_mutex);
1308 allow = allow_homedir;
1309 HEIMDAL_MUTEX_unlock(&homedir_mutex);
1314 * Enable and disable home directory access on either the global state
1315 * or the krb5_context state. By calling krb5_set_home_dir_access()
1316 * with context set to NULL, the global state is configured otherwise
1317 * the state for the krb5_context is modified.
1319 * For home directory access to be allowed, both the global state and
1320 * the krb5_context state have to be allowed.
1322 * Administrator (root user), never uses the home directory.
1324 * @param context a Kerberos 5 context or NULL
1325 * @param allow allow if TRUE home directory
1326 * @return the old value
1331 krb5_set_home_dir_access(krb5_context context, krb5_boolean allow)
1335 old = (context->flags & KRB5_CTX_F_HOMEDIR_ACCESS) ? TRUE : FALSE;
1337 context->flags |= KRB5_CTX_F_HOMEDIR_ACCESS;
1339 context->flags &= ~KRB5_CTX_F_HOMEDIR_ACCESS;
1341 HEIMDAL_MUTEX_lock(&homedir_mutex);
1342 old = allow_homedir;
1343 allow_homedir = allow;
1344 HEIMDAL_MUTEX_unlock(&homedir_mutex);