2 * Copyright (c) 1999 - 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"
36 #include <parse_bytes.h>
38 RCSID("$Id: verify_krb5_conf.c 22233 2007-12-08 21:43:37Z lha $");
40 /* verify krb5.conf */
42 static int dumpconfig_flag = 0;
43 static int version_flag = 0;
44 static int help_flag = 0;
45 static int warn_mit_syntax_flag = 0;
47 static struct getargs args[] = {
48 {"dumpconfig", 0, arg_flag, &dumpconfig_flag,
49 "show the parsed config files", NULL },
50 {"warn-mit-syntax", 0, arg_flag, &warn_mit_syntax_flag,
51 "show the parsed config files", NULL },
52 {"version", 0, arg_flag, &version_flag,
53 "print version", NULL },
54 {"help", 0, arg_flag, &help_flag,
62 sizeof(args)/sizeof(*args),
69 check_bytes(krb5_context context, const char *path, char *data)
71 if(parse_bytes(data, NULL) == -1) {
72 krb5_warnx(context, "%s: failed to parse \"%s\" as size", path, data);
79 check_time(krb5_context context, const char *path, char *data)
81 if(parse_time(data, NULL) == -1) {
82 krb5_warnx(context, "%s: failed to parse \"%s\" as time", path, data);
89 check_numeric(krb5_context context, const char *path, char *data)
93 v = strtol(data, &end, 0);
95 krb5_warnx(context, "%s: failed to parse \"%s\" as a number",
103 check_boolean(krb5_context context, const char *path, char *data)
107 if(strcasecmp(data, "yes") == 0 ||
108 strcasecmp(data, "true") == 0 ||
109 strcasecmp(data, "no") == 0 ||
110 strcasecmp(data, "false") == 0)
112 v = strtol(data, &end, 0);
114 krb5_warnx(context, "%s: failed to parse \"%s\" as a boolean",
119 krb5_warnx(context, "%s: numeric value \"%s\" is treated as \"true\"",
125 check_524(krb5_context context, const char *path, char *data)
127 if(strcasecmp(data, "yes") == 0 ||
128 strcasecmp(data, "no") == 0 ||
129 strcasecmp(data, "2b") == 0 ||
130 strcasecmp(data, "local") == 0)
133 krb5_warnx(context, "%s: didn't contain a valid option `%s'",
139 check_host(krb5_context context, const char *path, char *data)
143 const char *p = data;
144 struct addrinfo hints;
150 hints.ai_family = PF_UNSPEC;
151 hints.ai_socktype = 0;
152 hints.ai_protocol = 0;
154 hints.ai_addrlen = 0;
155 hints.ai_canonname = NULL;
156 hints.ai_addr = NULL;
157 hints.ai_next = NULL;
159 /* XXX data could be a list of hosts that this code can't handle */
160 /* XXX copied from krbhst.c */
161 if(strncmp(p, "http://", 7) == 0){
163 hints.ai_socktype = SOCK_STREAM;
164 strlcpy(service, "http", sizeof(service));
166 } else if(strncmp(p, "http/", 5) == 0) {
168 hints.ai_socktype = SOCK_STREAM;
169 strlcpy(service, "http", sizeof(service));
171 }else if(strncmp(p, "tcp/", 4) == 0){
173 hints.ai_socktype = SOCK_STREAM;
174 strlcpy(service, "kerberos", sizeof(service));
176 } else if(strncmp(p, "udp/", 4) == 0) {
178 hints.ai_socktype = SOCK_DGRAM;
179 strlcpy(service, "kerberos", sizeof(service));
182 hints.ai_socktype = SOCK_DGRAM;
183 strlcpy(service, "kerberos", sizeof(service));
186 if(strsep_copy(&p, ":", hostname, sizeof(hostname)) < 0) {
189 hostname[strcspn(hostname, "/")] = '\0';
192 int tmp = strtol(p, &end, 0);
194 krb5_warnx(context, "%s: failed to parse port number in %s",
199 snprintf(service, sizeof(service), "%u", defport);
201 ret = getaddrinfo(hostname, service, &hints, &ai);
202 if(ret == EAI_SERVICE && !isdigit((unsigned char)service[0])) {
203 snprintf(service, sizeof(service), "%u", defport);
204 ret = getaddrinfo(hostname, service, &hints, &ai);
207 krb5_warnx(context, "%s: %s (%s)", path, gai_strerror(ret), hostname);
214 mit_entry(krb5_context context, const char *path, char *data)
216 if (warn_mit_syntax_flag)
217 krb5_warnx(context, "%s is only used by MIT Kerberos", path);
226 #define L(X) { #X, LOG_ ## X }
228 static struct s2i syslogvals[] = {
273 find_value(const char *s, struct s2i *table)
275 while(table->s && strcasecmp(table->s, s))
281 check_log(krb5_context context, const char *path, char *data)
283 /* XXX sync with log.c */
284 int min = 0, max = -1, n;
286 const char *p = data;
288 n = sscanf(p, "%d%c%d/", &min, &c, &max);
302 krb5_warnx(context, "%s: failed to parse \"%s\"", path, data);
307 if(strcmp(p, "STDERR") == 0 ||
308 strcmp(p, "CONSOLE") == 0 ||
309 (strncmp(p, "FILE", 4) == 0 && (p[4] == ':' || p[4] == '=')) ||
310 (strncmp(p, "DEVICE", 6) == 0 && p[6] == '='))
312 if(strncmp(p, "SYSLOG", 6) == 0){
314 char severity[128] = "";
315 char facility[128] = "";
319 if(strsep_copy(&p, ":", severity, sizeof(severity)) != -1)
320 strsep_copy(&p, ":", facility, sizeof(facility));
321 if(*severity == '\0')
322 strlcpy(severity, "ERR", sizeof(severity));
323 if(*facility == '\0')
324 strlcpy(facility, "AUTH", sizeof(facility));
325 if(find_value(severity, syslogvals) == -1) {
326 krb5_warnx(context, "%s: unknown syslog facility \"%s\"",
330 if(find_value(severity, syslogvals) == -1) {
331 krb5_warnx(context, "%s: unknown syslog severity \"%s\"",
337 krb5_warnx(context, "%s: unknown log type: \"%s\"", path, data);
342 typedef int (*check_func_t)(krb5_context, const char*, char*);
349 struct entry all_strings[] = {
350 { "", krb5_config_string, NULL },
354 struct entry all_boolean[] = {
355 { "", krb5_config_string, check_boolean },
360 struct entry v4_name_convert_entries[] = {
361 { "host", krb5_config_list, all_strings },
362 { "plain", krb5_config_list, all_strings },
366 struct entry libdefaults_entries[] = {
367 { "accept_null_addresses", krb5_config_string, check_boolean },
368 { "capath", krb5_config_list, all_strings },
369 { "check_pac", krb5_config_string, check_boolean },
370 { "clockskew", krb5_config_string, check_time },
371 { "date_format", krb5_config_string, NULL },
372 { "default_cc_name", krb5_config_string, NULL },
373 { "default_etypes", krb5_config_string, NULL },
374 { "default_etypes_des", krb5_config_string, NULL },
375 { "default_keytab_modify_name", krb5_config_string, NULL },
376 { "default_keytab_name", krb5_config_string, NULL },
377 { "default_realm", krb5_config_string, NULL },
378 { "dns_canonize_hostname", krb5_config_string, check_boolean },
379 { "dns_proxy", krb5_config_string, NULL },
380 { "dns_lookup_kdc", krb5_config_string, check_boolean },
381 { "dns_lookup_realm", krb5_config_string, check_boolean },
382 { "dns_lookup_realm_labels", krb5_config_string, NULL },
383 { "egd_socket", krb5_config_string, NULL },
384 { "encrypt", krb5_config_string, check_boolean },
385 { "extra_addresses", krb5_config_string, NULL },
386 { "fcache_version", krb5_config_string, check_numeric },
387 { "fcc-mit-ticketflags", krb5_config_string, check_boolean },
388 { "forward", krb5_config_string, check_boolean },
389 { "forwardable", krb5_config_string, check_boolean },
390 { "http_proxy", krb5_config_string, check_host /* XXX */ },
391 { "ignore_addresses", krb5_config_string, NULL },
392 { "kdc_timeout", krb5_config_string, check_time },
393 { "kdc_timesync", krb5_config_string, check_boolean },
394 { "log_utc", krb5_config_string, check_boolean },
395 { "maxretries", krb5_config_string, check_numeric },
396 { "scan_interfaces", krb5_config_string, check_boolean },
397 { "srv_lookup", krb5_config_string, check_boolean },
398 { "srv_try_txt", krb5_config_string, check_boolean },
399 { "ticket_lifetime", krb5_config_string, check_time },
400 { "time_format", krb5_config_string, NULL },
401 { "transited_realms_reject", krb5_config_string, NULL },
402 { "no-addresses", krb5_config_string, check_boolean },
403 { "v4_instance_resolve", krb5_config_string, check_boolean },
404 { "v4_name_convert", krb5_config_list, v4_name_convert_entries },
405 { "verify_ap_req_nofail", krb5_config_string, check_boolean },
406 { "max_retries", krb5_config_string, check_time },
407 { "renew_lifetime", krb5_config_string, check_time },
408 { "proxiable", krb5_config_string, check_boolean },
409 { "warn_pwexpire", krb5_config_string, check_time },
411 { "permitted_enctypes", krb5_config_string, mit_entry },
412 { "default_tgs_enctypes", krb5_config_string, mit_entry },
413 { "default_tkt_enctypes", krb5_config_string, mit_entry },
417 struct entry appdefaults_entries[] = {
418 { "afslog", krb5_config_string, check_boolean },
419 { "afs-use-524", krb5_config_string, check_524 },
420 { "encrypt", krb5_config_string, check_boolean },
421 { "forward", krb5_config_string, check_boolean },
422 { "forwardable", krb5_config_string, check_boolean },
423 { "proxiable", krb5_config_string, check_boolean },
424 { "ticket_lifetime", krb5_config_string, check_time },
425 { "renew_lifetime", krb5_config_string, check_time },
426 { "no-addresses", krb5_config_string, check_boolean },
427 { "krb4_get_tickets", krb5_config_string, check_boolean },
428 { "pkinit_anchors", krb5_config_string, NULL },
429 { "pkinit_win2k", krb5_config_string, NULL },
430 { "pkinit_win2k_require_binding", krb5_config_string, NULL },
431 { "pkinit_require_eku", krb5_config_string, NULL },
432 { "pkinit_require_krbtgt_otherName", krb5_config_string, NULL },
433 { "pkinit_require_hostname_match", krb5_config_string, NULL },
435 { "anonymous", krb5_config_string, check_boolean },
437 { "", krb5_config_list, appdefaults_entries },
441 struct entry realms_entries[] = {
442 { "forwardable", krb5_config_string, check_boolean },
443 { "proxiable", krb5_config_string, check_boolean },
444 { "ticket_lifetime", krb5_config_string, check_time },
445 { "renew_lifetime", krb5_config_string, check_time },
446 { "warn_pwexpire", krb5_config_string, check_time },
447 { "kdc", krb5_config_string, check_host },
448 { "admin_server", krb5_config_string, check_host },
449 { "kpasswd_server", krb5_config_string, check_host },
450 { "krb524_server", krb5_config_string, check_host },
451 { "v4_name_convert", krb5_config_list, v4_name_convert_entries },
452 { "v4_instance_convert", krb5_config_list, all_strings },
453 { "v4_domains", krb5_config_string, NULL },
454 { "default_domain", krb5_config_string, NULL },
455 { "win2k_pkinit", krb5_config_string, NULL },
457 { "admin_keytab", krb5_config_string, mit_entry },
458 { "acl_file", krb5_config_string, mit_entry },
459 { "dict_file", krb5_config_string, mit_entry },
460 { "kadmind_port", krb5_config_string, mit_entry },
461 { "kpasswd_port", krb5_config_string, mit_entry },
462 { "master_key_name", krb5_config_string, mit_entry },
463 { "master_key_type", krb5_config_string, mit_entry },
464 { "key_stash_file", krb5_config_string, mit_entry },
465 { "max_life", krb5_config_string, mit_entry },
466 { "max_renewable_life", krb5_config_string, mit_entry },
467 { "default_principal_expiration", krb5_config_string, mit_entry },
468 { "default_principal_flags", krb5_config_string, mit_entry },
469 { "supported_enctypes", krb5_config_string, mit_entry },
470 { "database_name", krb5_config_string, mit_entry },
474 struct entry realms_foobar[] = {
475 { "", krb5_config_list, realms_entries },
480 struct entry kdc_database_entries[] = {
481 { "realm", krb5_config_string, NULL },
482 { "dbname", krb5_config_string, NULL },
483 { "mkey_file", krb5_config_string, NULL },
484 { "acl_file", krb5_config_string, NULL },
485 { "log_file", krb5_config_string, NULL },
489 struct entry kdc_entries[] = {
490 { "database", krb5_config_list, kdc_database_entries },
491 { "key-file", krb5_config_string, NULL },
492 { "logging", krb5_config_string, check_log },
493 { "max-request", krb5_config_string, check_bytes },
494 { "require-preauth", krb5_config_string, check_boolean },
495 { "ports", krb5_config_string, NULL },
496 { "addresses", krb5_config_string, NULL },
497 { "enable-kerberos4", krb5_config_string, check_boolean },
498 { "enable-524", krb5_config_string, check_boolean },
499 { "enable-http", krb5_config_string, check_boolean },
500 { "check-ticket-addresses", krb5_config_string, check_boolean },
501 { "allow-null-ticket-addresses", krb5_config_string, check_boolean },
502 { "allow-anonymous", krb5_config_string, check_boolean },
503 { "v4_realm", krb5_config_string, NULL },
504 { "enable-kaserver", krb5_config_string, check_boolean },
505 { "encode_as_rep_as_tgs_rep", krb5_config_string, check_boolean },
506 { "kdc_warn_pwexpire", krb5_config_string, check_time },
507 { "use_2b", krb5_config_list, NULL },
508 { "enable-pkinit", krb5_config_string, check_boolean },
509 { "pkinit_identity", krb5_config_string, NULL },
510 { "pkinit_anchors", krb5_config_string, NULL },
511 { "pkinit_pool", krb5_config_string, NULL },
512 { "pkinit_revoke", krb5_config_string, NULL },
513 { "pkinit_kdc_ocsp", krb5_config_string, NULL },
514 { "pkinit_principal_in_certificate", krb5_config_string, NULL },
515 { "pkinit_dh_min_bits", krb5_config_string, NULL },
516 { "pkinit_allow_proxy_certificate", krb5_config_string, NULL },
517 { "hdb-ldap-create-base", krb5_config_string, NULL },
518 { "v4-realm", krb5_config_string, NULL },
522 struct entry kadmin_entries[] = {
523 { "password_lifetime", krb5_config_string, check_time },
524 { "default_keys", krb5_config_string, NULL },
525 { "use_v4_salt", krb5_config_string, NULL },
526 { "require-preauth", krb5_config_string, check_boolean },
529 struct entry log_strings[] = {
530 { "", krb5_config_string, check_log },
536 struct entry kdcdefaults_entries[] = {
537 { "kdc_ports", krb5_config_string, mit_entry },
538 { "v4_mode", krb5_config_string, mit_entry },
542 struct entry capaths_entries[] = {
543 { "", krb5_config_list, all_strings },
547 struct entry password_quality_entries[] = {
548 { "policies", krb5_config_string, NULL },
549 { "external_program", krb5_config_string, NULL },
550 { "min_classes", krb5_config_string, check_numeric },
551 { "min_length", krb5_config_string, check_numeric },
552 { "", krb5_config_list, all_strings },
556 struct entry toplevel_sections[] = {
557 { "libdefaults" , krb5_config_list, libdefaults_entries },
558 { "realms", krb5_config_list, realms_foobar },
559 { "domain_realm", krb5_config_list, all_strings },
560 { "logging", krb5_config_list, log_strings },
561 { "kdc", krb5_config_list, kdc_entries },
562 { "kadmin", krb5_config_list, kadmin_entries },
563 { "appdefaults", krb5_config_list, appdefaults_entries },
564 { "gssapi", krb5_config_list, NULL },
565 { "capaths", krb5_config_list, capaths_entries },
566 { "password_quality", krb5_config_list, password_quality_entries },
568 { "kdcdefaults", krb5_config_list, kdcdefaults_entries },
574 check_section(krb5_context context, const char *path, krb5_config_section *cf,
575 struct entry *entries)
578 krb5_config_section *p;
583 for(p = cf; p != NULL; p = p->next) {
584 asprintf(&local, "%s/%s", path, p->name);
585 for(e = entries; e->name != NULL; e++) {
586 if(*e->name == '\0' || strcmp(e->name, p->name) == 0) {
587 if(e->type != p->type) {
588 krb5_warnx(context, "%s: unknown or wrong type", local);
590 } else if(p->type == krb5_config_string && e->check_data != NULL) {
591 error |= (*(check_func_t)e->check_data)(context, local, p->u.string);
592 } else if(p->type == krb5_config_list && e->check_data != NULL) {
593 error |= check_section(context, local, p->u.list, e->check_data);
598 if(e->name == NULL) {
599 krb5_warnx(context, "%s: unknown entry", local);
609 dumpconfig(int level, krb5_config_section *top)
611 krb5_config_section *x;
612 for(x = top; x; x = x->next) {
614 case krb5_config_list:
616 printf("[%s]\n", x->name);
618 printf("%*s%s = {\n", 4 * level, " ", x->name);
620 dumpconfig(level + 1, x->u.list);
622 printf("%*s}\n", 4 * level, " ");
624 case krb5_config_string:
625 printf("%*s%s = %s\n", 4 * level, " ", x->name, x->u.string);
632 main(int argc, char **argv)
634 krb5_context context;
636 krb5_config_section *tmp_cf;
639 setprogname (argv[0]);
641 ret = krb5_init_context(&context);
642 if (ret == KRB5_CONFIG_BADFORMAT)
643 errx (1, "krb5_init_context failed to parse configuration file");
645 errx (1, "krb5_init_context failed with %d", ret);
647 if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
663 krb5_get_default_config_files(&argv);
666 ret = krb5_config_parse_file_multi(context, *argv, &tmp_cf);
668 krb5_warn (context, ret, "krb5_config_parse_file");
673 dumpconfig(0, tmp_cf);
675 return check_section(context, "", tmp_cf, toplevel_sections);