2 * Copyright (c) 1997 - 2002 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 1.83.2.1 2004/08/20 15:30:24 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++) {
68 if(krb5_string_to_enctype(context, etypes_str[j], &etypes[k]) == 0)
71 etypes[k] = ETYPE_NULL;
72 krb5_config_free_strings(etypes_str);
74 *ret_enctypes = etypes;
79 * read variables from the configuration file and set in `context'
82 static krb5_error_code
83 init_context_from_config_file(krb5_context context)
87 krb5_enctype *tmptypes;
89 INIT_FIELD(context, time, max_skew, 5 * 60, "clockskew");
90 INIT_FIELD(context, time, kdc_timeout, 3, "kdc_timeout");
91 INIT_FIELD(context, int, max_retries, 3, "max_retries");
93 INIT_FIELD(context, string, http_proxy, NULL, "http_proxy");
95 ret = set_etypes (context, "default_etypes", &tmptypes);
98 free(context->etypes);
99 context->etypes = tmptypes;
101 ret = set_etypes (context, "default_etypes_des", &tmptypes);
104 free(context->etypes_des);
105 context->etypes_des = tmptypes;
107 /* default keytab name */
110 tmp = getenv("KRB5_KTNAME");
112 context->default_keytab = tmp;
114 INIT_FIELD(context, string, default_keytab,
115 KEYTAB_DEFAULT, "default_keytab_name");
117 INIT_FIELD(context, string, default_keytab_modify,
118 NULL, "default_keytab_modify_name");
120 INIT_FIELD(context, string, time_fmt,
121 "%Y-%m-%dT%H:%M:%S", "time_format");
123 INIT_FIELD(context, string, date_fmt,
124 "%Y-%m-%d", "date_format");
126 INIT_FIELD(context, bool, log_utc,
131 /* init dns-proxy slime */
132 tmp = krb5_config_get_string(context, NULL, "libdefaults",
135 roken_gethostby_setup(context->http_proxy, tmp);
136 krb5_free_host_realm (context, context->default_realms);
137 context->default_realms = NULL;
140 krb5_addresses addresses;
143 krb5_set_extra_addresses(context, NULL);
144 adr = krb5_config_get_strings(context, NULL,
148 memset(&addresses, 0, sizeof(addresses));
149 for(a = adr; a && *a; a++) {
150 ret = krb5_parse_address(context, *a, &addresses);
152 krb5_add_extra_addresses(context, &addresses);
153 krb5_free_addresses(context, &addresses);
156 krb5_config_free_strings(adr);
158 krb5_set_ignore_addresses(context, NULL);
159 adr = krb5_config_get_strings(context, NULL,
163 memset(&addresses, 0, sizeof(addresses));
164 for(a = adr; a && *a; a++) {
165 ret = krb5_parse_address(context, *a, &addresses);
167 krb5_add_ignore_addresses(context, &addresses);
168 krb5_free_addresses(context, &addresses);
171 krb5_config_free_strings(adr);
174 INIT_FIELD(context, bool, scan_interfaces, TRUE, "scan_interfaces");
175 INIT_FIELD(context, int, fcache_vno, 0, "fcache_version");
176 /* prefer dns_lookup_kdc over srv_lookup. */
177 INIT_FIELD(context, bool, srv_lookup, TRUE, "srv_lookup");
178 INIT_FIELD(context, bool, srv_lookup, context->srv_lookup, "dns_lookup_kdc");
179 context->default_cc_name = NULL;
184 krb5_init_context(krb5_context *context)
190 p = calloc(1, sizeof(*p));
194 ret = krb5_get_default_config_files(&files);
197 ret = krb5_set_config_files(p, files);
198 krb5_free_config_files(files);
202 /* init error tables */
207 krb5_cc_register(p, &krb5_fcc_ops, TRUE);
208 krb5_cc_register(p, &krb5_mcc_ops, TRUE);
212 krb5_kt_register (p, &krb5_fkt_ops);
213 krb5_kt_register (p, &krb5_mkt_ops);
214 krb5_kt_register (p, &krb5_akf_ops);
215 krb5_kt_register (p, &krb4_fkt_ops);
216 krb5_kt_register (p, &krb5_srvtab_fkt_ops);
217 krb5_kt_register (p, &krb5_any_ops);
221 krb5_free_context(p);
229 krb5_free_context(krb5_context context)
231 if (context->default_cc_name)
232 free(context->default_cc_name);
233 free(context->etypes);
234 free(context->etypes_des);
235 krb5_free_host_realm (context, context->default_realms);
236 krb5_config_file_free (context, context->cf);
237 free_error_table (context->et_list);
238 free(context->cc_ops);
239 free(context->kt_types);
240 krb5_clear_error_string(context);
241 if(context->warn_dest != NULL)
242 krb5_closelog(context, context->warn_dest);
243 krb5_set_extra_addresses(context, NULL);
244 krb5_set_ignore_addresses(context, NULL);
249 krb5_set_config_files(krb5_context context, char **filenames)
252 krb5_config_binding *tmp = NULL;
253 while(filenames != NULL && *filenames != NULL && **filenames != '\0') {
254 ret = krb5_config_parse_file_multi(context, *filenames, &tmp);
255 if(ret != 0 && ret != ENOENT) {
256 krb5_config_file_free(context, tmp);
262 /* with this enabled and if there are no config files, Kerberos is
263 considererd disabled */
267 krb5_config_file_free(context, context->cf);
269 ret = init_context_from_config_file(context);
274 krb5_get_default_config_files(char ***pfilenames)
280 const char *files = NULL;
281 if (pfilenames == NULL)
284 files = getenv("KRB5_CONFIG");
286 files = krb5_config_file;
288 for(n = 0, p = files; strsep_copy(&p, ":", NULL, 0) != -1; n++);
289 pp = malloc((n + 1) * sizeof(*pp));
298 l = strsep_copy(&q, ":", NULL, 0);
301 pp[n] = malloc(l + 1);
303 krb5_free_config_files(pp);
306 l = strsep_copy(&p, ":", pp[n], l + 1);
307 for(i = 0; i < n; i++)
308 if(strcmp(pp[i], pp[n]) == 0) {
321 krb5_free_config_files(char **filenames)
324 for(p = filenames; *p != NULL; p++)
330 * set `etype' to a malloced list of the default enctypes
333 static krb5_error_code
334 default_etypes(krb5_context context, krb5_enctype **etype)
339 ETYPE_ARCFOUR_HMAC_MD5,
346 *etype = malloc(sizeof(p));
348 krb5_set_error_string (context, "malloc: out of memory");
351 memcpy(*etype, p, sizeof(p));
356 krb5_set_default_in_tkt_etypes(krb5_context context,
357 const krb5_enctype *etypes)
360 krb5_enctype *p = NULL;
363 for (i = 0; etypes[i]; ++i)
364 if(!krb5_enctype_valid(context, etypes[i])) {
365 krb5_set_error_string(context, "enctype %d not supported",
367 return KRB5_PROG_ETYPE_NOSUPP;
372 krb5_set_error_string (context, "malloc: out of memory");
375 memmove(p, etypes, i * sizeof(krb5_enctype));
378 free(context->etypes);
385 krb5_get_default_in_tkt_etypes(krb5_context context,
386 krb5_enctype **etypes)
392 if(context->etypes) {
393 for(i = 0; context->etypes[i]; i++);
397 krb5_set_error_string (context, "malloc: out of memory");
400 memmove(p, context->etypes, i * sizeof(krb5_enctype));
402 ret = default_etypes(context, &p);
411 krb5_get_err_text(krb5_context context, krb5_error_code code)
413 const char *p = NULL;
415 p = com_right(context->et_list, code);
424 krb5_init_ets(krb5_context context)
426 if(context->et_list == NULL){
427 krb5_add_et_list(context, initialize_krb5_error_table_r);
428 krb5_add_et_list(context, initialize_asn1_error_table_r);
429 krb5_add_et_list(context, initialize_heim_error_table_r);
430 krb5_add_et_list(context, initialize_k524_error_table_r);
435 krb5_set_use_admin_kdc (krb5_context context, krb5_boolean flag)
437 context->use_admin_kdc = flag;
441 krb5_get_use_admin_kdc (krb5_context context)
443 return context->use_admin_kdc;
447 krb5_add_extra_addresses(krb5_context context, krb5_addresses *addresses)
450 if(context->extra_addresses)
451 return krb5_append_addresses(context,
452 context->extra_addresses, addresses);
454 return krb5_set_extra_addresses(context, addresses);
458 krb5_set_extra_addresses(krb5_context context, const krb5_addresses *addresses)
460 if(context->extra_addresses)
461 krb5_free_addresses(context, context->extra_addresses);
463 if(addresses == NULL) {
464 if(context->extra_addresses != NULL) {
465 free(context->extra_addresses);
466 context->extra_addresses = NULL;
470 if(context->extra_addresses == NULL) {
471 context->extra_addresses = malloc(sizeof(*context->extra_addresses));
472 if(context->extra_addresses == NULL) {
473 krb5_set_error_string (context, "malloc: out of memory");
477 return krb5_copy_addresses(context, addresses, context->extra_addresses);
481 krb5_get_extra_addresses(krb5_context context, krb5_addresses *addresses)
483 if(context->extra_addresses == NULL) {
484 memset(addresses, 0, sizeof(*addresses));
487 return krb5_copy_addresses(context,context->extra_addresses, addresses);
491 krb5_add_ignore_addresses(krb5_context context, krb5_addresses *addresses)
494 if(context->ignore_addresses)
495 return krb5_append_addresses(context,
496 context->ignore_addresses, addresses);
498 return krb5_set_ignore_addresses(context, addresses);
502 krb5_set_ignore_addresses(krb5_context context, const krb5_addresses *addresses)
504 if(context->ignore_addresses)
505 krb5_free_addresses(context, context->ignore_addresses);
506 if(addresses == NULL) {
507 if(context->ignore_addresses != NULL) {
508 free(context->ignore_addresses);
509 context->ignore_addresses = NULL;
513 if(context->ignore_addresses == NULL) {
514 context->ignore_addresses = malloc(sizeof(*context->ignore_addresses));
515 if(context->ignore_addresses == NULL) {
516 krb5_set_error_string (context, "malloc: out of memory");
520 return krb5_copy_addresses(context, addresses, context->ignore_addresses);
524 krb5_get_ignore_addresses(krb5_context context, krb5_addresses *addresses)
526 if(context->ignore_addresses == NULL) {
527 memset(addresses, 0, sizeof(*addresses));
530 return krb5_copy_addresses(context, context->ignore_addresses, addresses);
534 krb5_set_fcache_version(krb5_context context, int version)
536 context->fcache_vno = version;
541 krb5_get_fcache_version(krb5_context context, int *version)
543 *version = context->fcache_vno;