lib/krb5/verify_krb5_conf.c

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