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
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27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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34 #include "krb5_locl.h"
37 RCSID("$Id: context.c,v 1.81.2.1 2002/10/21 14:33:34 joda 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");
183 krb5_init_context(krb5_context *context)
189 p = calloc(1, sizeof(*p));
193 ret = krb5_get_default_config_files(&files);
196 ret = krb5_set_config_files(p, files);
197 krb5_free_config_files(files);
201 /* init error tables */
206 krb5_cc_register(p, &krb5_fcc_ops, TRUE);
207 krb5_cc_register(p, &krb5_mcc_ops, TRUE);
211 krb5_kt_register (p, &krb5_fkt_ops);
212 krb5_kt_register (p, &krb5_mkt_ops);
213 krb5_kt_register (p, &krb5_akf_ops);
214 krb5_kt_register (p, &krb4_fkt_ops);
215 krb5_kt_register (p, &krb5_srvtab_fkt_ops);
216 krb5_kt_register (p, &krb5_any_ops);
220 krb5_free_context(p);
228 krb5_free_context(krb5_context context)
230 free(context->etypes);
231 free(context->etypes_des);
232 krb5_free_host_realm (context, context->default_realms);
233 krb5_config_file_free (context, context->cf);
234 free_error_table (context->et_list);
235 free(context->cc_ops);
236 free(context->kt_types);
237 krb5_clear_error_string(context);
238 if(context->warn_dest != NULL)
239 krb5_closelog(context, context->warn_dest);
240 krb5_set_extra_addresses(context, NULL);
241 krb5_set_ignore_addresses(context, NULL);
246 krb5_set_config_files(krb5_context context, char **filenames)
249 krb5_config_binding *tmp = NULL;
250 while(filenames != NULL && *filenames != NULL && **filenames != '\0') {
251 ret = krb5_config_parse_file_multi(context, *filenames, &tmp);
252 if(ret != 0 && ret != ENOENT) {
253 krb5_config_file_free(context, tmp);
259 /* with this enabled and if there are no config files, Kerberos is
260 considererd disabled */
264 krb5_config_file_free(context, context->cf);
266 ret = init_context_from_config_file(context);
271 krb5_get_default_config_files(char ***pfilenames)
277 const char *files = NULL;
278 if (pfilenames == NULL)
281 files = getenv("KRB5_CONFIG");
283 files = krb5_config_file;
285 for(n = 0, p = files; strsep_copy(&p, ":", NULL, 0) != -1; n++);
286 pp = malloc((n + 1) * sizeof(*pp));
295 l = strsep_copy(&q, ":", NULL, 0);
298 pp[n] = malloc(l + 1);
300 krb5_free_config_files(pp);
303 l = strsep_copy(&p, ":", pp[n], l + 1);
304 for(i = 0; i < n; i++)
305 if(strcmp(pp[i], pp[n]) == 0) {
318 krb5_free_config_files(char **filenames)
321 for(p = filenames; *p != NULL; p++)
327 * set `etype' to a malloced list of the default enctypes
330 static krb5_error_code
331 default_etypes(krb5_context context, krb5_enctype **etype)
336 ETYPE_ARCFOUR_HMAC_MD5,
343 *etype = malloc(sizeof(p));
345 krb5_set_error_string (context, "malloc: out of memory");
348 memcpy(*etype, p, sizeof(p));
353 krb5_set_default_in_tkt_etypes(krb5_context context,
354 const krb5_enctype *etypes)
357 krb5_enctype *p = NULL;
360 for (i = 0; etypes[i]; ++i)
361 if(!krb5_enctype_valid(context, etypes[i])) {
362 krb5_set_error_string(context, "enctype %d not supported",
364 return KRB5_PROG_ETYPE_NOSUPP;
369 krb5_set_error_string (context, "malloc: out of memory");
372 memmove(p, etypes, i * sizeof(krb5_enctype));
375 free(context->etypes);
382 krb5_get_default_in_tkt_etypes(krb5_context context,
383 krb5_enctype **etypes)
389 if(context->etypes) {
390 for(i = 0; context->etypes[i]; i++);
394 krb5_set_error_string (context, "malloc: out of memory");
397 memmove(p, context->etypes, i * sizeof(krb5_enctype));
399 ret = default_etypes(context, &p);
408 krb5_get_err_text(krb5_context context, krb5_error_code code)
410 const char *p = NULL;
412 p = com_right(context->et_list, code);
419 krb5_init_ets(krb5_context context)
421 if(context->et_list == NULL){
422 krb5_add_et_list(context, initialize_krb5_error_table_r);
423 krb5_add_et_list(context, initialize_asn1_error_table_r);
424 krb5_add_et_list(context, initialize_heim_error_table_r);
425 krb5_add_et_list(context, initialize_k524_error_table_r);
430 krb5_set_use_admin_kdc (krb5_context context, krb5_boolean flag)
432 context->use_admin_kdc = flag;
436 krb5_get_use_admin_kdc (krb5_context context)
438 return context->use_admin_kdc;
442 krb5_add_extra_addresses(krb5_context context, krb5_addresses *addresses)
445 if(context->extra_addresses)
446 return krb5_append_addresses(context,
447 context->extra_addresses, addresses);
449 return krb5_set_extra_addresses(context, addresses);
453 krb5_set_extra_addresses(krb5_context context, const krb5_addresses *addresses)
455 if(context->extra_addresses)
456 krb5_free_addresses(context, context->extra_addresses);
458 if(addresses == NULL) {
459 if(context->extra_addresses != NULL) {
460 free(context->extra_addresses);
461 context->extra_addresses = NULL;
465 if(context->extra_addresses == NULL) {
466 context->extra_addresses = malloc(sizeof(*context->extra_addresses));
467 if(context->extra_addresses == NULL) {
468 krb5_set_error_string (context, "malloc: out of memory");
472 return krb5_copy_addresses(context, addresses, context->extra_addresses);
476 krb5_get_extra_addresses(krb5_context context, krb5_addresses *addresses)
478 if(context->extra_addresses == NULL) {
479 memset(addresses, 0, sizeof(*addresses));
482 return krb5_copy_addresses(context,context->extra_addresses, addresses);
486 krb5_add_ignore_addresses(krb5_context context, krb5_addresses *addresses)
489 if(context->ignore_addresses)
490 return krb5_append_addresses(context,
491 context->ignore_addresses, addresses);
493 return krb5_set_ignore_addresses(context, addresses);
497 krb5_set_ignore_addresses(krb5_context context, const krb5_addresses *addresses)
499 if(context->ignore_addresses)
500 krb5_free_addresses(context, context->ignore_addresses);
501 if(addresses == NULL) {
502 if(context->ignore_addresses != NULL) {
503 free(context->ignore_addresses);
504 context->ignore_addresses = NULL;
508 if(context->ignore_addresses == NULL) {
509 context->ignore_addresses = malloc(sizeof(*context->ignore_addresses));
510 if(context->ignore_addresses == NULL) {
511 krb5_set_error_string (context, "malloc: out of memory");
515 return krb5_copy_addresses(context, addresses, context->ignore_addresses);
519 krb5_get_ignore_addresses(krb5_context context, krb5_addresses *addresses)
521 if(context->ignore_addresses == NULL) {
522 memset(addresses, 0, sizeof(*addresses));
525 return krb5_copy_addresses(context, context->ignore_addresses, addresses);
529 krb5_set_fcache_version(krb5_context context, int version)
531 context->fcache_vno = version;
536 krb5_get_fcache_version(krb5_context context, int *version)
538 *version = context->fcache_vno;