1/*
2 * Copyright (c) 1999 - 2005 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 *
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.
16 *
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.
20 *
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
31 * SUCH DAMAGE.
32 */
33
34#include "krb5_locl.h"
35#include <getarg.h>
36#include <parse_bytes.h>
37#include <err.h>
38
39/* verify krb5.conf */
40
41static int dumpconfig_flag = 0;
42static int version_flag = 0;
43static int help_flag	= 0;
44static int warn_mit_syntax_flag = 0;
45
46static struct getargs args[] = {
47    {"dumpconfig", 0,      arg_flag,       &dumpconfig_flag,
48     "show the parsed config files", NULL },
49    {"warn-mit-syntax", 0, arg_flag,       &warn_mit_syntax_flag,
50     "show the parsed config files", NULL },
51    {"version",	0,	arg_flag,	&version_flag,
52     "print version", NULL },
53    {"help",	0,	arg_flag,	&help_flag,
54     NULL, NULL }
55};
56
57static void
58usage (int ret)
59{
60    arg_printusage (args,
61		    sizeof(args)/sizeof(*args),
62		    NULL,
63		    "[config-file]");
64    exit (ret);
65}
66
67static int
68check_bytes(krb5_context context, const char *path, char *data)
69{
70    if(parse_bytes(data, NULL) == -1) {
71	krb5_warnx(context, "%s: failed to parse \"%s\" as size", path, data);
72	return 1;
73    }
74    return 0;
75}
76
77static int
78check_time(krb5_context context, const char *path, char *data)
79{
80    if(parse_time(data, NULL) == -1) {
81	krb5_warnx(context, "%s: failed to parse \"%s\" as time", path, data);
82	return 1;
83    }
84    return 0;
85}
86
87static int
88check_numeric(krb5_context context, const char *path, char *data)
89{
90    long v;
91    char *end;
92    v = strtol(data, &end, 0);
93
94    if ((v == LONG_MIN || v == LONG_MAX) && errno != 0) {
95	krb5_warnx(context, "%s: over/under flow for \"%s\"",
96		   path, data);
97	return 1;
98    }
99    if(*end != '\0') {
100	krb5_warnx(context, "%s: failed to parse \"%s\" as a number",
101		   path, data);
102	return 1;
103    }
104    return 0;
105}
106
107static int
108check_boolean(krb5_context context, const char *path, char *data)
109{
110    long int v;
111    char *end;
112    if(strcasecmp(data, "yes") == 0 ||
113       strcasecmp(data, "true") == 0 ||
114       strcasecmp(data, "no") == 0 ||
115       strcasecmp(data, "false") == 0)
116	return 0;
117    v = strtol(data, &end, 0);
118    if(*end != '\0') {
119	krb5_warnx(context, "%s: failed to parse \"%s\" as a boolean",
120		   path, data);
121	return 1;
122    }
123    if(v != 0 && v != 1)
124	krb5_warnx(context, "%s: numeric value \"%s\" is treated as \"true\"",
125		   path, data);
126    return 0;
127}
128
129static int
130check_524(krb5_context context, const char *path, char *data)
131{
132    if(strcasecmp(data, "yes") == 0 ||
133       strcasecmp(data, "no") == 0 ||
134       strcasecmp(data, "2b") == 0 ||
135       strcasecmp(data, "local") == 0)
136	return 0;
137
138    krb5_warnx(context, "%s: didn't contain a valid option `%s'",
139	       path, data);
140    return 1;
141}
142
143static int
144check_host(krb5_context context, const char *path, char *data)
145{
146    int ret;
147    char hostname[128];
148    const char *p = data;
149    struct addrinfo hints;
150    char service[32];
151    int defport;
152    struct addrinfo *ai;
153
154    hints.ai_flags = 0;
155    hints.ai_family = PF_UNSPEC;
156    hints.ai_socktype = 0;
157    hints.ai_protocol = 0;
158
159    hints.ai_addrlen = 0;
160    hints.ai_canonname = NULL;
161    hints.ai_addr = NULL;
162    hints.ai_next = NULL;
163
164    /* XXX data could be a list of hosts that this code can't handle */
165    /* XXX copied from krbhst.c */
166    if(strncmp(p, "http://", 7) == 0){
167        p += 7;
168	hints.ai_socktype = SOCK_STREAM;
169	strlcpy(service, "http", sizeof(service));
170	defport = 80;
171    } else if(strncmp(p, "http/", 5) == 0) {
172        p += 5;
173	hints.ai_socktype = SOCK_STREAM;
174	strlcpy(service, "http", sizeof(service));
175	defport = 80;
176    }else if(strncmp(p, "tcp/", 4) == 0){
177        p += 4;
178	hints.ai_socktype = SOCK_STREAM;
179	strlcpy(service, "kerberos", sizeof(service));
180	defport = 88;
181    } else if(strncmp(p, "udp/", 4) == 0) {
182        p += 4;
183	hints.ai_socktype = SOCK_DGRAM;
184	strlcpy(service, "kerberos", sizeof(service));
185	defport = 88;
186    } else {
187	hints.ai_socktype = SOCK_DGRAM;
188	strlcpy(service, "kerberos", sizeof(service));
189	defport = 88;
190    }
191    if(strsep_copy(&p, ":", hostname, sizeof(hostname)) < 0) {
192	return 1;
193    }
194    hostname[strcspn(hostname, "/")] = '\0';
195    if(p != NULL) {
196	char *end;
197	int tmp = strtol(p, &end, 0);
198	if(end == p) {
199	    krb5_warnx(context, "%s: failed to parse port number in %s",
200		       path, data);
201	    return 1;
202	}
203	defport = tmp;
204	snprintf(service, sizeof(service), "%u", defport);
205    }
206    ret = getaddrinfo(hostname, service, &hints, &ai);
207    if(ret == EAI_SERVICE && !isdigit((unsigned char)service[0])) {
208	snprintf(service, sizeof(service), "%u", defport);
209	ret = getaddrinfo(hostname, service, &hints, &ai);
210    }
211    if(ret != 0) {
212	krb5_warnx(context, "%s: %s (%s)", path, gai_strerror(ret), hostname);
213	return 1;
214    }
215    return 0;
216}
217
218static int
219mit_entry(krb5_context context, const char *path, char *data)
220{
221    if (warn_mit_syntax_flag)
222	krb5_warnx(context, "%s is only used by MIT Kerberos", path);
223    return 0;
224}
225
226struct s2i {
227    const char *s;
228    int val;
229};
230
231#define L(X) { #X, LOG_ ## X }
232
233static struct s2i syslogvals[] = {
234    /* severity */
235    L(EMERG),
236    L(ALERT),
237    L(CRIT),
238    L(ERR),
239    L(WARNING),
240    L(NOTICE),
241    L(INFO),
242    L(DEBUG),
243    /* facility */
244    L(AUTH),
245#ifdef LOG_AUTHPRIV
246    L(AUTHPRIV),
247#endif
248#ifdef LOG_CRON
249    L(CRON),
250#endif
251    L(DAEMON),
252#ifdef LOG_FTP
253    L(FTP),
254#endif
255    L(KERN),
256    L(LPR),
257    L(MAIL),
258#ifdef LOG_NEWS
259    L(NEWS),
260#endif
261    L(SYSLOG),
262    L(USER),
263#ifdef LOG_UUCP
264    L(UUCP),
265#endif
266    L(LOCAL0),
267    L(LOCAL1),
268    L(LOCAL2),
269    L(LOCAL3),
270    L(LOCAL4),
271    L(LOCAL5),
272    L(LOCAL6),
273    L(LOCAL7),
274    { NULL, -1 }
275};
276
277static int
278find_value(const char *s, struct s2i *table)
279{
280    while(table->s && strcasecmp(table->s, s))
281	table++;
282    return table->val;
283}
284
285static int
286check_log(krb5_context context, const char *path, char *data)
287{
288    /* XXX sync with log.c */
289    int min = 0, max = -1, n;
290    char c;
291    const char *p = data;
292
293    n = sscanf(p, "%d%c%d/", &min, &c, &max);
294    if(n == 2){
295	if(c == '/') {
296	    if(min < 0){
297		max = -min;
298		min = 0;
299	    }else{
300		max = min;
301	    }
302	}
303    }
304    if(n){
305	p = strchr(p, '/');
306	if(p == NULL) {
307	    krb5_warnx(context, "%s: failed to parse \"%s\"", path, data);
308	    return 1;
309	}
310	p++;
311    }
312    if(strcmp(p, "STDERR") == 0 ||
313       strcmp(p, "CONSOLE") == 0 ||
314       (strncmp(p, "FILE", 4) == 0 && (p[4] == ':' || p[4] == '=')) ||
315       (strncmp(p, "DEVICE", 6) == 0 && p[6] == '='))
316	return 0;
317    if(strncmp(p, "SYSLOG", 6) == 0){
318	int ret = 0;
319	char severity[128] = "";
320	char facility[128] = "";
321	p += 6;
322	if(*p != '\0')
323	    p++;
324	if(strsep_copy(&p, ":", severity, sizeof(severity)) != -1)
325	    strsep_copy(&p, ":", facility, sizeof(facility));
326	if(*severity == '\0')
327	    strlcpy(severity, "ERR", sizeof(severity));
328 	if(*facility == '\0')
329	    strlcpy(facility, "AUTH", sizeof(facility));
330	if(find_value(severity, syslogvals) == -1) {
331	    krb5_warnx(context, "%s: unknown syslog facility \"%s\"",
332		       path, facility);
333	    ret++;
334	}
335	if(find_value(severity, syslogvals) == -1) {
336	    krb5_warnx(context, "%s: unknown syslog severity \"%s\"",
337		       path, severity);
338	    ret++;
339	}
340	return ret;
341    }else{
342	krb5_warnx(context, "%s: unknown log type: \"%s\"", path, data);
343	return 1;
344    }
345}
346
347typedef int (*check_func_t)(krb5_context, const char*, char*);
348struct entry {
349    const char *name;
350    int type;
351    void *check_data;
352    int deprecated;
353};
354
355struct entry all_strings[] = {
356    { "", krb5_config_string, NULL },
357    { NULL }
358};
359
360struct entry all_boolean[] = {
361    { "", krb5_config_string, check_boolean },
362    { NULL }
363};
364
365
366struct entry v4_name_convert_entries[] = {
367    { "host", krb5_config_list, all_strings },
368    { "plain", krb5_config_list, all_strings },
369    { NULL }
370};
371
372struct entry libdefaults_entries[] = {
373    { "accept_null_addresses", krb5_config_string, check_boolean },
374    { "allow_weak_crypto", krb5_config_string, check_boolean },
375    { "capath", krb5_config_list, all_strings, 1 },
376    { "check_pac", krb5_config_string, check_boolean },
377    { "clockskew", krb5_config_string, check_time },
378    { "date_format", krb5_config_string, NULL },
379    { "default_cc_name", krb5_config_string, NULL },
380    { "default_etypes", krb5_config_string, NULL },
381    { "default_etypes_des", krb5_config_string, NULL },
382    { "default_keytab_modify_name", krb5_config_string, NULL },
383    { "default_keytab_name", krb5_config_string, NULL },
384    { "default_realm", krb5_config_string, NULL },
385    { "dns_canonize_hostname", krb5_config_string, check_boolean },
386    { "dns_proxy", krb5_config_string, NULL },
387    { "dns_lookup_kdc", krb5_config_string, check_boolean },
388    { "dns_lookup_realm", krb5_config_string, check_boolean },
389    { "dns_lookup_realm_labels", krb5_config_string, NULL },
390    { "egd_socket", krb5_config_string, NULL },
391    { "encrypt", krb5_config_string, check_boolean },
392    { "extra_addresses", krb5_config_string, NULL },
393    { "fcache_version", krb5_config_string, check_numeric },
394    { "fcc-mit-ticketflags", krb5_config_string, check_boolean },
395    { "forward", krb5_config_string, check_boolean },
396    { "forwardable", krb5_config_string, check_boolean },
397    { "http_proxy", krb5_config_string, check_host /* XXX */ },
398    { "ignore_addresses", krb5_config_string, NULL },
399    { "kdc_timeout", krb5_config_string, check_time },
400    { "kdc_timesync", krb5_config_string, check_boolean },
401    { "log_utc", krb5_config_string, check_boolean },
402    { "maxretries", krb5_config_string, check_numeric },
403    { "large_message_size", krb5_config_string, check_numeric },
404    { "max_message_size", krb5_config_string, check_numeric },
405    { "scan_interfaces", krb5_config_string, check_boolean },
406    { "srv_lookup", krb5_config_string, check_boolean },
407    { "srv_try_txt", krb5_config_string, check_boolean },
408    { "ticket_lifetime", krb5_config_string, check_time },
409    { "time_format", krb5_config_string, NULL },
410    { "transited_realms_reject", krb5_config_string, NULL },
411    { "no-addresses", krb5_config_string, check_boolean },
412    { "v4_instance_resolve", krb5_config_string, check_boolean },
413    { "v4_name_convert", krb5_config_list, v4_name_convert_entries },
414    { "verify_ap_req_nofail", krb5_config_string, check_boolean },
415    { "max_retries", krb5_config_string, check_time },
416    { "renew_lifetime", krb5_config_string, check_time },
417    { "proxiable", krb5_config_string, check_boolean },
418    { "warn_pwexpire", krb5_config_string, check_time },
419    /* MIT stuff */
420    { "permitted_enctypes", krb5_config_string, mit_entry },
421    { "default_tgs_enctypes", krb5_config_string, mit_entry },
422    { "default_tkt_enctypes", krb5_config_string, mit_entry },
423    { NULL }
424};
425
426struct entry appdefaults_entries[] = {
427    { "afslog", krb5_config_string, check_boolean },
428    { "afs-use-524", krb5_config_string, check_524 },
429    { "encrypt", krb5_config_string, check_boolean },
430    { "forward", krb5_config_string, check_boolean },
431    { "forwardable", krb5_config_string, check_boolean },
432    { "proxiable", krb5_config_string, check_boolean },
433    { "ticket_lifetime", krb5_config_string, check_time },
434    { "renew_lifetime", krb5_config_string, check_time },
435    { "no-addresses", krb5_config_string, check_boolean },
436    { "krb4_get_tickets", krb5_config_string, check_boolean },
437    { "pkinit_anchors", krb5_config_string, NULL },
438    { "pkinit_win2k", krb5_config_string, NULL },
439    { "pkinit_win2k_require_binding", krb5_config_string, NULL },
440    { "pkinit_require_eku", krb5_config_string, NULL },
441    { "pkinit_require_krbtgt_otherName", krb5_config_string, NULL },
442    { "pkinit_require_hostname_match", krb5_config_string, NULL },
443#if 0
444    { "anonymous", krb5_config_string, check_boolean },
445#endif
446    { "", krb5_config_list, appdefaults_entries },
447    { NULL }
448};
449
450struct entry realms_entries[] = {
451    { "forwardable", krb5_config_string, check_boolean },
452    { "proxiable", krb5_config_string, check_boolean },
453    { "ticket_lifetime", krb5_config_string, check_time },
454    { "renew_lifetime", krb5_config_string, check_time },
455    { "warn_pwexpire", krb5_config_string, check_time },
456    { "kdc", krb5_config_string, check_host },
457    { "admin_server", krb5_config_string, check_host },
458    { "kpasswd_server", krb5_config_string, check_host },
459    { "krb524_server", krb5_config_string, check_host },
460    { "v4_name_convert", krb5_config_list, v4_name_convert_entries },
461    { "v4_instance_convert", krb5_config_list, all_strings },
462    { "v4_domains", krb5_config_string, NULL },
463    { "default_domain", krb5_config_string, NULL },
464    { "win2k_pkinit", krb5_config_string, NULL },
465    /* MIT stuff */
466    { "admin_keytab", krb5_config_string, mit_entry },
467    { "acl_file", krb5_config_string, mit_entry },
468    { "dict_file", krb5_config_string, mit_entry },
469    { "kadmind_port", krb5_config_string, mit_entry },
470    { "kpasswd_port", krb5_config_string, mit_entry },
471    { "master_key_name", krb5_config_string, mit_entry },
472    { "master_key_type", krb5_config_string, mit_entry },
473    { "key_stash_file", krb5_config_string, mit_entry },
474    { "max_life", krb5_config_string, mit_entry },
475    { "max_renewable_life", krb5_config_string, mit_entry },
476    { "default_principal_expiration", krb5_config_string, mit_entry },
477    { "default_principal_flags", krb5_config_string, mit_entry },
478    { "supported_enctypes", krb5_config_string, mit_entry },
479    { "database_name", krb5_config_string, mit_entry },
480    { NULL }
481};
482
483struct entry realms_foobar[] = {
484    { "", krb5_config_list, realms_entries },
485    { NULL }
486};
487
488
489struct entry kdc_database_entries[] = {
490    { "realm", krb5_config_string, NULL },
491    { "dbname", krb5_config_string, NULL },
492    { "mkey_file", krb5_config_string, NULL },
493    { "acl_file", krb5_config_string, NULL },
494    { "log_file", krb5_config_string, NULL },
495    { NULL }
496};
497
498struct entry kdc_entries[] = {
499    { "database", krb5_config_list, kdc_database_entries },
500    { "key-file", krb5_config_string, NULL },
501    { "logging", krb5_config_string, check_log },
502    { "max-request", krb5_config_string, check_bytes },
503    { "require-preauth", krb5_config_string, check_boolean },
504    { "ports", krb5_config_string, NULL },
505    { "addresses", krb5_config_string, NULL },
506    { "enable-kerberos4", krb5_config_string, check_boolean },
507    { "enable-524", krb5_config_string, check_boolean },
508    { "enable-http", krb5_config_string, check_boolean },
509    { "check-ticket-addresses", krb5_config_string, check_boolean },
510    { "allow-null-ticket-addresses", krb5_config_string, check_boolean },
511    { "allow-anonymous", krb5_config_string, check_boolean },
512    { "v4_realm", krb5_config_string, NULL },
513    { "enable-kaserver", krb5_config_string, check_boolean },
514    { "encode_as_rep_as_tgs_rep", krb5_config_string, check_boolean },
515    { "kdc_warn_pwexpire", krb5_config_string, check_time },
516    { "use_2b", krb5_config_list, NULL },
517    { "enable-pkinit", krb5_config_string, check_boolean },
518    { "pkinit_identity", krb5_config_string, NULL },
519    { "pkinit_anchors", krb5_config_string, NULL },
520    { "pkinit_pool", krb5_config_string, NULL },
521    { "pkinit_revoke", krb5_config_string, NULL },
522    { "pkinit_kdc_ocsp", krb5_config_string, NULL },
523    { "pkinit_principal_in_certificate", krb5_config_string, NULL },
524    { "pkinit_dh_min_bits", krb5_config_string, NULL },
525    { "pkinit_allow_proxy_certificate", krb5_config_string, NULL },
526    { "hdb-ldap-create-base", krb5_config_string, NULL },
527    { "v4-realm", krb5_config_string, NULL },
528    { NULL }
529};
530
531struct entry kadmin_entries[] = {
532    { "password_lifetime", krb5_config_string, check_time },
533    { "default_keys", krb5_config_string, NULL },
534    { "use_v4_salt", krb5_config_string, NULL },
535    { "require-preauth", krb5_config_string, check_boolean },
536    { NULL }
537};
538struct entry log_strings[] = {
539    { "", krb5_config_string, check_log },
540    { NULL }
541};
542
543
544/* MIT stuff */
545struct entry kdcdefaults_entries[] = {
546    { "kdc_ports", krb5_config_string, mit_entry },
547    { "v4_mode", krb5_config_string, mit_entry },
548    { NULL }
549};
550
551struct entry capaths_entries[] = {
552    { "", krb5_config_list, all_strings },
553    { NULL }
554};
555
556struct entry password_quality_entries[] = {
557    { "policies", krb5_config_string, NULL },
558    { "external_program", krb5_config_string, NULL },
559    { "min_classes", krb5_config_string, check_numeric },
560    { "min_length", krb5_config_string, check_numeric },
561    { "", krb5_config_list, all_strings },
562    { NULL }
563};
564
565struct entry toplevel_sections[] = {
566    { "libdefaults" , krb5_config_list, libdefaults_entries },
567    { "realms", krb5_config_list, realms_foobar },
568    { "domain_realm", krb5_config_list, all_strings },
569    { "logging", krb5_config_list, log_strings },
570    { "kdc", krb5_config_list, kdc_entries },
571    { "kadmin", krb5_config_list, kadmin_entries },
572    { "appdefaults", krb5_config_list, appdefaults_entries },
573    { "gssapi", krb5_config_list, NULL },
574    { "capaths", krb5_config_list, capaths_entries },
575    { "password_quality", krb5_config_list, password_quality_entries },
576    /* MIT stuff */
577    { "kdcdefaults", krb5_config_list, kdcdefaults_entries },
578    { NULL }
579};
580
581
582static int
583check_section(krb5_context context, const char *path, krb5_config_section *cf,
584	      struct entry *entries)
585{
586    int error = 0;
587    krb5_config_section *p;
588    struct entry *e;
589
590    char *local;
591
592    for(p = cf; p != NULL; p = p->next) {
593	local = NULL;
594	if (asprintf(&local, "%s/%s", path, p->name) < 0 || local == NULL)
595	    errx(1, "out of memory");
596	for(e = entries; e->name != NULL; e++) {
597	    if(*e->name == '\0' || strcmp(e->name, p->name) == 0) {
598		if(e->type != p->type) {
599		    krb5_warnx(context, "%s: unknown or wrong type", local);
600		    error |= 1;
601		} else if(p->type == krb5_config_string && e->check_data != NULL) {
602		    error |= (*(check_func_t)e->check_data)(context, local, p->u.string);
603		} else if(p->type == krb5_config_list && e->check_data != NULL) {
604		    error |= check_section(context, local, p->u.list, e->check_data);
605		}
606		if(e->deprecated) {
607		    krb5_warnx(context, "%s: is a deprecated entry", local);
608		    error |= 1;
609		}
610		break;
611	    }
612	}
613	if(e->name == NULL) {
614	    krb5_warnx(context, "%s: unknown entry", local);
615	    error |= 1;
616	}
617	free(local);
618    }
619    return error;
620}
621
622
623static void
624dumpconfig(int level, krb5_config_section *top)
625{
626    krb5_config_section *x;
627    for(x = top; x; x = x->next) {
628	switch(x->type) {
629	case krb5_config_list:
630	    if(level == 0) {
631		printf("[%s]\n", x->name);
632	    } else {
633		printf("%*s%s = {\n", 4 * level, " ", x->name);
634	    }
635	    dumpconfig(level + 1, x->u.list);
636	    if(level > 0)
637		printf("%*s}\n", 4 * level, " ");
638	    break;
639	case krb5_config_string:
640	    printf("%*s%s = %s\n", 4 * level, " ", x->name, x->u.string);
641	    break;
642	}
643    }
644}
645
646int
647main(int argc, char **argv)
648{
649    krb5_context context;
650    krb5_error_code ret;
651    krb5_config_section *tmp_cf;
652    int optidx = 0;
653
654    setprogname (argv[0]);
655
656    ret = krb5_init_context_flags(KRB5_CONTEXT_FLAG_NO_CONFIG, &context);
657    if (ret == KRB5_CONFIG_BADFORMAT)
658	errx (1, "krb5_init_context failed to parse configuration file");
659    else if (ret)
660	errx (1, "krb5_init_context failed with %d", ret);
661
662    if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
663	usage(1);
664
665    if (help_flag)
666	usage (0);
667
668    if(version_flag){
669	print_version(NULL);
670	exit(0);
671    }
672
673    argc -= optidx;
674    argv += optidx;
675
676    tmp_cf = NULL;
677    if(argc == 0)
678	krb5_get_default_config_files(&argv);
679
680    while(*argv) {
681	ret = krb5_config_parse_file_multi(context, *argv, &tmp_cf);
682	if (ret != 0)
683	    krb5_warn (context, ret, "krb5_config_parse_file");
684	argv++;
685    }
686
687    if(dumpconfig_flag)
688	dumpconfig(0, tmp_cf);
689
690    return check_section(context, "", tmp_cf, toplevel_sections);
691}
692