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 RCSID("$Id: context.c,v 1.102 2005/05/18 04:20:50 lha Exp $");
39 #define INIT_FIELD(C, T, E, D, F) \
40 (C)->E = krb5_config_get_ ## T ## _default ((C), NULL, (D), \
41 "libdefaults", F, NULL)
44 * Set the list of etypes `ret_etypes' from the configuration variable
48 static krb5_error_code
49 set_etypes (krb5_context context,
51 krb5_enctype **ret_enctypes)
54 krb5_enctype *etypes = NULL;
56 etypes_str = krb5_config_get_strings(context, NULL, "libdefaults",
60 for(i = 0; etypes_str[i]; i++);
61 etypes = malloc((i+1) * sizeof(*etypes));
63 krb5_config_free_strings (etypes_str);
64 krb5_set_error_string (context, "malloc: out of memory");
67 for(j = 0, k = 0; j < i; j++) {
69 if(krb5_string_to_enctype(context, etypes_str[j], &e) != 0)
71 if (krb5_enctype_valid(context, e) != 0)
75 etypes[k] = ETYPE_NULL;
76 krb5_config_free_strings(etypes_str);
78 *ret_enctypes = etypes;
83 * read variables from the configuration file and set in `context'
86 static krb5_error_code
87 init_context_from_config_file(krb5_context context)
91 krb5_enctype *tmptypes;
93 INIT_FIELD(context, time, max_skew, 5 * 60, "clockskew");
94 INIT_FIELD(context, time, kdc_timeout, 3, "kdc_timeout");
95 INIT_FIELD(context, int, max_retries, 3, "max_retries");
97 INIT_FIELD(context, string, http_proxy, NULL, "http_proxy");
99 ret = set_etypes (context, "default_etypes", &tmptypes);
102 free(context->etypes);
103 context->etypes = tmptypes;
105 ret = set_etypes (context, "default_etypes_des", &tmptypes);
108 free(context->etypes_des);
109 context->etypes_des = tmptypes;
111 /* default keytab name */
114 tmp = getenv("KRB5_KTNAME");
116 context->default_keytab = tmp;
118 INIT_FIELD(context, string, default_keytab,
119 KEYTAB_DEFAULT, "default_keytab_name");
121 INIT_FIELD(context, string, default_keytab_modify,
122 NULL, "default_keytab_modify_name");
124 INIT_FIELD(context, string, time_fmt,
125 "%Y-%m-%dT%H:%M:%S", "time_format");
127 INIT_FIELD(context, string, date_fmt,
128 "%Y-%m-%d", "date_format");
130 INIT_FIELD(context, bool, log_utc,
135 /* init dns-proxy slime */
136 tmp = krb5_config_get_string(context, NULL, "libdefaults",
139 roken_gethostby_setup(context->http_proxy, tmp);
140 krb5_free_host_realm (context, context->default_realms);
141 context->default_realms = NULL;
144 krb5_addresses addresses;
147 krb5_set_extra_addresses(context, NULL);
148 adr = krb5_config_get_strings(context, NULL,
152 memset(&addresses, 0, sizeof(addresses));
153 for(a = adr; a && *a; a++) {
154 ret = krb5_parse_address(context, *a, &addresses);
156 krb5_add_extra_addresses(context, &addresses);
157 krb5_free_addresses(context, &addresses);
160 krb5_config_free_strings(adr);
162 krb5_set_ignore_addresses(context, NULL);
163 adr = krb5_config_get_strings(context, NULL,
167 memset(&addresses, 0, sizeof(addresses));
168 for(a = adr; a && *a; a++) {
169 ret = krb5_parse_address(context, *a, &addresses);
171 krb5_add_ignore_addresses(context, &addresses);
172 krb5_free_addresses(context, &addresses);
175 krb5_config_free_strings(adr);
178 INIT_FIELD(context, bool, scan_interfaces, TRUE, "scan_interfaces");
179 INIT_FIELD(context, int, fcache_vno, 0, "fcache_version");
180 /* prefer dns_lookup_kdc over srv_lookup. */
181 INIT_FIELD(context, bool, srv_lookup, TRUE, "srv_lookup");
182 INIT_FIELD(context, bool, srv_lookup, context->srv_lookup, "dns_lookup_kdc");
183 INIT_FIELD(context, int, large_msg_size, 6000, "large_message_size");
184 context->default_cc_name = NULL;
185 INIT_FIELD(context, bool, fdns, TRUE, "fdns");
189 krb5_error_code KRB5_LIB_FUNCTION
190 krb5_init_context(krb5_context *context)
198 p = calloc(1, sizeof(*p));
202 p->mutex = malloc(sizeof(HEIMDAL_MUTEX));
203 if (p->mutex == NULL) {
207 HEIMDAL_MUTEX_init(p->mutex);
209 ret = krb5_get_default_config_files(&files);
212 ret = krb5_set_config_files(p, files);
213 krb5_free_config_files(files);
217 /* init error tables */
222 krb5_cc_register(p, &krb5_acc_ops, TRUE);
223 krb5_cc_register(p, &krb5_fcc_ops, TRUE);
224 krb5_cc_register(p, &krb5_mcc_ops, TRUE);
226 krb5_cc_register(p, &krb5_kcm_ops, TRUE);
231 krb5_kt_register (p, &krb5_fkt_ops);
232 krb5_kt_register (p, &krb5_wrfkt_ops);
233 krb5_kt_register (p, &krb5_javakt_ops);
234 krb5_kt_register (p, &krb5_mkt_ops);
235 krb5_kt_register (p, &krb5_akf_ops);
236 krb5_kt_register (p, &krb4_fkt_ops);
237 krb5_kt_register (p, &krb5_srvtab_fkt_ops);
238 krb5_kt_register (p, &krb5_any_ops);
242 krb5_free_context(p);
249 void KRB5_LIB_FUNCTION
250 krb5_free_context(krb5_context context)
252 if (context->default_cc_name)
253 free(context->default_cc_name);
254 free(context->etypes);
255 free(context->etypes_des);
256 krb5_free_host_realm (context, context->default_realms);
257 krb5_config_file_free (context, context->cf);
258 free_error_table (context->et_list);
259 free(context->cc_ops);
260 free(context->kt_types);
261 krb5_clear_error_string(context);
262 if(context->warn_dest != NULL)
263 krb5_closelog(context, context->warn_dest);
264 krb5_set_extra_addresses(context, NULL);
265 krb5_set_ignore_addresses(context, NULL);
266 if (context->mutex != NULL) {
267 HEIMDAL_MUTEX_destroy(context->mutex);
268 free(context->mutex);
270 memset(context, 0, sizeof(*context));
274 krb5_error_code KRB5_LIB_FUNCTION
275 krb5_set_config_files(krb5_context context, char **filenames)
278 krb5_config_binding *tmp = NULL;
279 while(filenames != NULL && *filenames != NULL && **filenames != '\0') {
280 ret = krb5_config_parse_file_multi(context, *filenames, &tmp);
281 if(ret != 0 && ret != ENOENT && ret != EACCES) {
282 krb5_config_file_free(context, tmp);
288 /* with this enabled and if there are no config files, Kerberos is
289 considererd disabled */
293 krb5_config_file_free(context, context->cf);
295 ret = init_context_from_config_file(context);
299 static krb5_error_code
300 add_file(char ***pfilenames, int *len, char *file)
302 char **pp = *pfilenames;
305 for(i = 0; i < *len; i++) {
306 if(strcmp(pp[i], file) == 0) {
312 pp = realloc(*pfilenames, (*len + 2) * sizeof(*pp));
326 * `pq' isn't free, its up the the caller
329 krb5_error_code KRB5_LIB_FUNCTION
330 krb5_prepend_config_files(const char *filelist, char **pq, char ***ret_pp)
345 l = strsep_copy(&q, ":", NULL, 0);
350 krb5_free_config_files(pp);
353 l = strsep_copy(&p, ":", fn, l + 1);
354 ret = add_file(&pp, &len, fn);
356 krb5_free_config_files(pp);
364 for (i = 0; pq[i] != NULL; i++) {
367 krb5_free_config_files(pp);
370 ret = add_file(&pp, &len, fn);
372 krb5_free_config_files(pp);
382 krb5_error_code KRB5_LIB_FUNCTION
383 krb5_prepend_config_files_default(const char *filelist, char ***pfilenames)
386 char **defpp, **pp = NULL;
388 ret = krb5_get_default_config_files(&defpp);
392 ret = krb5_prepend_config_files(filelist, defpp, &pp);
393 krb5_free_config_files(defpp);
401 krb5_error_code KRB5_LIB_FUNCTION
402 krb5_get_default_config_files(char ***pfilenames)
404 const char *files = NULL;
406 if (pfilenames == NULL)
409 files = getenv("KRB5_CONFIG");
411 files = krb5_config_file;
413 return krb5_prepend_config_files(files, NULL, pfilenames);
416 void KRB5_LIB_FUNCTION
417 krb5_free_config_files(char **filenames)
420 for(p = filenames; *p != NULL; p++)
426 * set `etype' to a malloced list of the default enctypes
429 static krb5_error_code
430 default_etypes(krb5_context context, krb5_enctype **etype)
433 ETYPE_AES256_CTS_HMAC_SHA1_96,
434 ETYPE_AES128_CTS_HMAC_SHA1_96,
437 ETYPE_ARCFOUR_HMAC_MD5,
442 krb5_enctype *e = NULL, *ep;
445 for (i = 0; i < sizeof(p)/sizeof(p[0]); i++) {
446 if (krb5_enctype_valid(context, p[i]) != 0)
448 ep = realloc(e, (n + 2) * sizeof(*e));
451 krb5_set_error_string (context, "malloc: out of memory");
456 e[n + 1] = ETYPE_NULL;
463 krb5_error_code KRB5_LIB_FUNCTION
464 krb5_set_default_in_tkt_etypes(krb5_context context,
465 const krb5_enctype *etypes)
467 krb5_enctype *p = NULL;
471 for (i = 0; etypes[i]; ++i) {
473 ret = krb5_enctype_valid(context, etypes[i]);
480 krb5_set_error_string (context, "malloc: out of memory");
483 memmove(p, etypes, i * sizeof(krb5_enctype));
486 free(context->etypes);
492 krb5_error_code KRB5_LIB_FUNCTION
493 krb5_get_default_in_tkt_etypes(krb5_context context,
494 krb5_enctype **etypes)
500 if(context->etypes) {
501 for(i = 0; context->etypes[i]; i++);
505 krb5_set_error_string (context, "malloc: out of memory");
508 memmove(p, context->etypes, i * sizeof(krb5_enctype));
510 ret = default_etypes(context, &p);
518 const char* KRB5_LIB_FUNCTION
519 krb5_get_err_text(krb5_context context, krb5_error_code code)
521 const char *p = NULL;
523 p = com_right(context->et_list, code);
531 void KRB5_LIB_FUNCTION
532 krb5_init_ets(krb5_context context)
534 if(context->et_list == NULL){
535 krb5_add_et_list(context, initialize_krb5_error_table_r);
536 krb5_add_et_list(context, initialize_asn1_error_table_r);
537 krb5_add_et_list(context, initialize_heim_error_table_r);
538 krb5_add_et_list(context, initialize_k524_error_table_r);
542 void KRB5_LIB_FUNCTION
543 krb5_set_use_admin_kdc (krb5_context context, krb5_boolean flag)
545 context->use_admin_kdc = flag;
548 krb5_boolean KRB5_LIB_FUNCTION
549 krb5_get_use_admin_kdc (krb5_context context)
551 return context->use_admin_kdc;
554 krb5_error_code KRB5_LIB_FUNCTION
555 krb5_add_extra_addresses(krb5_context context, krb5_addresses *addresses)
558 if(context->extra_addresses)
559 return krb5_append_addresses(context,
560 context->extra_addresses, addresses);
562 return krb5_set_extra_addresses(context, addresses);
565 krb5_error_code KRB5_LIB_FUNCTION
566 krb5_set_extra_addresses(krb5_context context, const krb5_addresses *addresses)
568 if(context->extra_addresses)
569 krb5_free_addresses(context, context->extra_addresses);
571 if(addresses == NULL) {
572 if(context->extra_addresses != NULL) {
573 free(context->extra_addresses);
574 context->extra_addresses = NULL;
578 if(context->extra_addresses == NULL) {
579 context->extra_addresses = malloc(sizeof(*context->extra_addresses));
580 if(context->extra_addresses == NULL) {
581 krb5_set_error_string (context, "malloc: out of memory");
585 return krb5_copy_addresses(context, addresses, context->extra_addresses);
588 krb5_error_code KRB5_LIB_FUNCTION
589 krb5_get_extra_addresses(krb5_context context, krb5_addresses *addresses)
591 if(context->extra_addresses == NULL) {
592 memset(addresses, 0, sizeof(*addresses));
595 return krb5_copy_addresses(context,context->extra_addresses, addresses);
598 krb5_error_code KRB5_LIB_FUNCTION
599 krb5_add_ignore_addresses(krb5_context context, krb5_addresses *addresses)
602 if(context->ignore_addresses)
603 return krb5_append_addresses(context,
604 context->ignore_addresses, addresses);
606 return krb5_set_ignore_addresses(context, addresses);
609 krb5_error_code KRB5_LIB_FUNCTION
610 krb5_set_ignore_addresses(krb5_context context, const krb5_addresses *addresses)
612 if(context->ignore_addresses)
613 krb5_free_addresses(context, context->ignore_addresses);
614 if(addresses == NULL) {
615 if(context->ignore_addresses != NULL) {
616 free(context->ignore_addresses);
617 context->ignore_addresses = NULL;
621 if(context->ignore_addresses == NULL) {
622 context->ignore_addresses = malloc(sizeof(*context->ignore_addresses));
623 if(context->ignore_addresses == NULL) {
624 krb5_set_error_string (context, "malloc: out of memory");
628 return krb5_copy_addresses(context, addresses, context->ignore_addresses);
631 krb5_error_code KRB5_LIB_FUNCTION
632 krb5_get_ignore_addresses(krb5_context context, krb5_addresses *addresses)
634 if(context->ignore_addresses == NULL) {
635 memset(addresses, 0, sizeof(*addresses));
638 return krb5_copy_addresses(context, context->ignore_addresses, addresses);
641 krb5_error_code KRB5_LIB_FUNCTION
642 krb5_set_fcache_version(krb5_context context, int version)
644 context->fcache_vno = version;
648 krb5_error_code KRB5_LIB_FUNCTION
649 krb5_get_fcache_version(krb5_context context, int *version)
651 *version = context->fcache_vno;
655 krb5_boolean KRB5_LIB_FUNCTION
656 krb5_is_thread_safe(void)
658 #ifdef ENABLE_PTHREAD_SUPPORT