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
  39 /* verify krb5.conf */
  40
  41 static int dumpconfig_flag = 0;
  42 static int version_flag = 0;
  43 static int help_flag    = 0;
  44 static int warn_mit_syntax_flag = 0;
  45
  46 static 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
  57 static void
  58 usage (int ret)
  59 {
  60     arg_printusage (args,
  61                     sizeof(args)/sizeof(*args),
  62                     NULL,
  63                     "[config-file]");
  64     exit (ret);
  65 }
  66
  67 static int
  68 check_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
  77 static int
  78 check_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
  87 static int
  88 check_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
 107 static int
 108 check_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
 129 static int
 130 check_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
 143 static int
 144 check_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
 218 static int
 219 mit_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
 226 struct s2i {
 227     const char *s;
 228     int val;
 229 };
 230
 231 #define L(X) { #X, LOG_ ## X }
 232
 233 static 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
 277 static int
 278 find_value(const char *s, struct s2i *table)
 279 {
 280     while(table->s && strcasecmp(table->s, s))
 281         table++;
 282     return table->val;
 283 }
 284
 285 static int
 286 check_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 #ifdef _WIN32
 293     const char *q;
 294 #endif
 295
 296     n = sscanf(p, "%d%c%d/", &min, &c, &max);
 297     if(n == 2){
 298         if(ISPATHSEP(c)) {
 299             if(min < 0){
 300                 max = -min;
 301                 min = 0;
 302             }else{
 303                 max = min;
 304             }
 305         }
 306     }
 307     if(n){
 308 #ifdef _WIN32
 309         q = strrchr(p, '\\');
 310         if (q != NULL)
 311             p = q;
 312         else
 313 #endif
 314         p = strchr(p, '/');
 315         if(p == NULL) {
 316             krb5_warnx(context, "%s: failed to parse \"%s\"", path, data);
 317             return 1;
 318         }
 319         p++;
 320     }
 321     if(strcmp(p, "STDERR") == 0 ||
 322        strcmp(p, "CONSOLE") == 0 ||
 323        (strncmp(p, "FILE", 4) == 0 && (p[4] == ':' || p[4] == '=')) ||
 324        (strncmp(p, "DEVICE", 6) == 0 && p[6] == '='))
 325         return 0;
 326     if(strncmp(p, "SYSLOG", 6) == 0){
 327         int ret = 0;
 328         char severity[128] = "";
 329         char facility[128] = "";
 330         p += 6;
 331         if(*p != '\0')
 332             p++;
 333         if(strsep_copy(&p, ":", severity, sizeof(severity)) != -1)
 334             strsep_copy(&p, ":", facility, sizeof(facility));
 335         if(*severity == '\0')
 336             strlcpy(severity, "ERR", sizeof(severity));
 337         if(*facility == '\0')
 338             strlcpy(facility, "AUTH", sizeof(facility));
 339         if(find_value(severity, syslogvals) == -1) {
 340             krb5_warnx(context, "%s: unknown syslog facility \"%s\"",
 341                        path, facility);
 342             ret++;
 343         }
 344         if(find_value(severity, syslogvals) == -1) {
 345             krb5_warnx(context, "%s: unknown syslog severity \"%s\"",
 346                        path, severity);
 347             ret++;
 348         }
 349         return ret;
 350     }else{
 351         krb5_warnx(context, "%s: unknown log type: \"%s\"", path, data);
 352         return 1;
 353     }
 354 }
 355
 356 typedef int (*check_func_t)(krb5_context, const char*, char*);
 357 struct entry {
 358     const char *name;
 359     int type;
 360     void *check_data;
 361     int deprecated;
 362 };
 363
 364 struct entry all_strings[] = {
 365     { "", krb5_config_string, NULL, 0 },
 366     { NULL, 0, NULL, 0 }
 367 };
 368
 369 struct entry all_boolean[] = {
 370     { "", krb5_config_string, check_boolean, 0 },
 371     { NULL, 0, NULL, 0 }
 372 };
 373
 374
 375 struct entry v4_name_convert_entries[] = {
 376     { "host", krb5_config_list, all_strings, 0 },
 377     { "plain", krb5_config_list, all_strings, 0 },
 378     { NULL, 0, NULL, 0 }
 379 };
 380
 381 struct entry libdefaults_entries[] = {
 382     { "accept_null_addresses", krb5_config_string, check_boolean, 0 },
 383     { "allow_weak_crypto", krb5_config_string, check_boolean, 0 },
 384     { "capath", krb5_config_list, all_strings, 1 },
 385     { "ccapi_library", krb5_config_string, NULL, 0 },
 386     { "check_pac", krb5_config_string, check_boolean, 0 },
 387     { "check-rd-req-server", krb5_config_string, check_boolean, 0 },
 388     { "clockskew", krb5_config_string, check_time, 0 },
 389     { "date_format", krb5_config_string, NULL, 0 },
 390     { "default_as_etypes", krb5_config_string, NULL, 0 },
 391     { "default_cc_name", krb5_config_string, NULL, 0 },
 392     { "default_cc_type", krb5_config_string, NULL, 0 },
 393     { "default_etypes", krb5_config_string, NULL, 0 },
 394     { "default_etypes_des", krb5_config_string, NULL, 0 },
 395     { "default_keytab_modify_name", krb5_config_string, NULL, 0 },
 396     { "default_keytab_name", krb5_config_string, NULL, 0 },
 397     { "default_keytab_modify_name", krb5_config_string, NULL, 0 },
 398     { "default_realm", krb5_config_string, NULL, 0 },
 399     { "default_tgs_etypes", krb5_config_string, NULL, 0 },
 400     { "dns_canonize_hostname", krb5_config_string, check_boolean, 0 },
 401     { "dns_proxy", krb5_config_string, NULL, 0 },
 402     { "dns_lookup_kdc", krb5_config_string, check_boolean, 0 },
 403     { "dns_lookup_realm", krb5_config_string, check_boolean, 0 },
 404     { "dns_lookup_realm_labels", krb5_config_string, NULL, 0 },
 405     { "egd_socket", krb5_config_string, NULL, 0 },
 406     { "encrypt", krb5_config_string, check_boolean, 0 },
 407     { "extra_addresses", krb5_config_string, NULL, 0 },
 408     { "fcache_version", krb5_config_string, check_numeric, 0 },
 409     { "fcache_strict_checking", krb5_config_string, check_boolean, 0 },
 410     { "fcc-mit-ticketflags", krb5_config_string, check_boolean, 0 },
 411     { "forward", krb5_config_string, check_boolean, 0 },
 412     { "forwardable", krb5_config_string, check_boolean, 0 },
 413     { "allow_hierarchical_capaths", krb5_config_string, check_boolean, 0 },
 414     { "host_timeout", krb5_config_string, check_time, 0 },
 415     { "http_proxy", krb5_config_string, check_host /* XXX */, 0 },
 416     { "ignore_addresses", krb5_config_string, NULL, 0 },
 417     { "k5login_authoritative", krb5_config_string, check_boolean, 0 },
 418     { "k5login_directory", krb5_config_string, NULL, 0 },
 419     { "kdc_timeout", krb5_config_string, check_time, 0 },
 420     { "kdc_timesync", krb5_config_string, check_boolean, 0 },
 421     { "kuserok", krb5_config_string, NULL, 0 },
 422     { "large_message_size", krb5_config_string, check_numeric, 0 },
 423     { "log_utc", krb5_config_string, check_boolean, 0 },
 424     { "max_retries", krb5_config_string, check_numeric, 0 },
 425     { "maximum_message_size", krb5_config_string, check_numeric, 0 },
 426     { "moduli", krb5_config_string, NULL, 0 },
 427     { "name_canon_rules", krb5_config_string, NULL, 0 },
 428     { "no-addresses", krb5_config_string, check_boolean, 0 },
 429     { "pkinit_dh_min_bits", krb5_config_string, NULL, 0 },
 430     { "proxiable", krb5_config_string, check_boolean, 0 },
 431     { "renew_lifetime", krb5_config_string, check_time, 0 },
 432     { "scan_interfaces", krb5_config_string, check_boolean, 0 },
 433     { "srv_lookup", krb5_config_string, check_boolean, 0 },
 434     { "srv_try_txt", krb5_config_string, check_boolean, 0 },
 435     { "ticket_lifetime", krb5_config_string, check_time, 0 },
 436     { "time_format", krb5_config_string, NULL, 0 },
 437     { "transited_realms_reject", krb5_config_string, NULL, 0 },
 438     { "use_fallback", krb5_config_string, check_boolean, 0 },
 439     { "v4_instance_resolve", krb5_config_string, check_boolean, 0 },
 440     { "v4_name_convert", krb5_config_list, v4_name_convert_entries, 0 },
 441     { "verify_ap_req_nofail", krb5_config_string, check_boolean, 0 },
 442     { "warn_pwexpire", krb5_config_string, check_time, 0 },
 443
 444     /* MIT stuff */
 445     { "permitted_enctypes", krb5_config_string, mit_entry, 0 },
 446     { "default_tgs_enctypes", krb5_config_string, mit_entry, 0 },
 447     { "default_tkt_enctypes", krb5_config_string, mit_entry, 0 },
 448     { NULL, 0, NULL, 0 }
 449 };
 450
 451 struct entry appdefaults_entries[] = {
 452     { "afslog", krb5_config_string, check_boolean, 0 },
 453     { "afs-use-524", krb5_config_string, check_524, 0 },
 454 #if 0
 455     { "anonymous", krb5_config_string, check_boolean, 0 },
 456 #endif
 457     { "encrypt", krb5_config_string, check_boolean, 0 },
 458     { "forward", krb5_config_string, check_boolean, 0 },
 459     { "forwardable", krb5_config_string, check_boolean, 0 },
 460     { "krb4_get_tickets", krb5_config_string, check_boolean, 0 },
 461     { "proxiable", krb5_config_string, check_boolean, 0 },
 462     { "renew_lifetime", krb5_config_string, check_time, 0 },
 463     { "no-addresses", krb5_config_string, check_boolean, 0 },
 464     { "pkinit_anchors", krb5_config_string, NULL, 0 },
 465     { "pkinit_pool", krb5_config_string, NULL, 0 },
 466     { "pkinit_require_eku", krb5_config_string, NULL, 0 },
 467     { "pkinit_require_hostname_match", krb5_config_string, NULL, 0 },
 468     { "pkinit_require_krbtgt_otherName", krb5_config_string, NULL, 0 },
 469     { "pkinit_revoke", krb5_config_string, NULL, 0 },
 470     { "pkinit_trustedCertifiers", krb5_config_string, check_boolean, 0 },
 471     { "pkinit_win2k", krb5_config_string, NULL, 0 },
 472     { "pkinit_win2k_require_binding", krb5_config_string, NULL, 0 },
 473     { "ticket_lifetime", krb5_config_string, check_time, 0 },
 474     { "", krb5_config_list, appdefaults_entries, 0 },
 475     { NULL, 0, NULL, 0 }
 476 };
 477
 478 struct entry realms_entries[] = {
 479     { "admin_server", krb5_config_string, check_host, 0 },
 480     { "auth_to_local", krb5_config_string, NULL, 0 },
 481     { "auth_to_local_names", krb5_config_string, NULL, 0 },
 482     { "default_domain", krb5_config_string, NULL, 0 },
 483     { "forwardable", krb5_config_string, check_boolean, 0 },
 484     { "allow_hierarchical_capaths", krb5_config_string, check_boolean, 0 },
 485     { "kdc", krb5_config_string, check_host, 0 },
 486     { "kpasswd_server", krb5_config_string, check_host, 0 },
 487     { "krb524_server", krb5_config_string, check_host, 0 },
 488     { "kx509_ca", krb5_config_string, NULL, 0 },
 489     { "kx509_include_pkinit_san", krb5_config_string, check_boolean, 0 },
 490     { "name_canon_rules", krb5_config_string, NULL, 0 },
 491     { "no-addresses", krb5_config_string, check_boolean, 0 },
 492     { "pkinit_anchors", krb5_config_string, NULL, 0 },
 493     { "pkinit_require_eku", krb5_config_string, NULL, 0 },
 494     { "pkinit_require_hostname_match", krb5_config_string, NULL, 0 },
 495     { "pkinit_require_krbtgt_otherName", krb5_config_string, NULL, 0 },
 496     { "pkinit_trustedCertifiers", krb5_config_string, check_boolean, 0 },
 497     { "pkinit_win2k", krb5_config_string, NULL, 0 },
 498     { "pkinit_win2k_require_binding", krb5_config_string, NULL, 0 },
 499     { "proxiable", krb5_config_string, check_boolean, 0 },
 500     { "renew_lifetime", krb5_config_string, check_time, 0 },
 501     { "require_initial_kca_tickets", krb5_config_string, check_boolean, 0 },
 502     { "ticket_lifetime", krb5_config_string, check_time, 0 },
 503     { "v4_domains", krb5_config_string, NULL, 0 },
 504     { "v4_instance_convert", krb5_config_list, all_strings, 0 },
 505     { "v4_name_convert", krb5_config_list, v4_name_convert_entries, 0 },
 506     { "warn_pwexpire", krb5_config_string, check_time, 0 },
 507     { "win2k_pkinit", krb5_config_string, NULL, 0 },
 508
 509     /* MIT stuff */
 510     { "admin_keytab", krb5_config_string, mit_entry, 0 },
 511     { "acl_file", krb5_config_string, mit_entry, 0 },
 512     { "database_name", krb5_config_string, mit_entry, 0 },
 513     { "default_principal_expiration", krb5_config_string, mit_entry, 0 },
 514     { "default_principal_flags", krb5_config_string, mit_entry, 0 },
 515     { "dict_file", krb5_config_string, mit_entry, 0 },
 516     { "kadmind_port", krb5_config_string, mit_entry, 0 },
 517     { "kpasswd_port", krb5_config_string, mit_entry, 0 },
 518     { "master_kdc", krb5_config_string, mit_entry, 0 },
 519     { "master_key_name", krb5_config_string, mit_entry, 0 },
 520     { "master_key_type", krb5_config_string, mit_entry, 0 },
 521     { "key_stash_file", krb5_config_string, mit_entry, 0 },
 522     { "max_life", krb5_config_string, mit_entry, 0 },
 523     { "max_renewable_life", krb5_config_string, mit_entry, 0 },
 524     { "supported_enctypes", krb5_config_string, mit_entry, 0 },
 525     { NULL, 0, NULL, 0 }
 526 };
 527
 528 struct entry realms_foobar[] = {
 529     { "", krb5_config_list, realms_entries, 0 },
 530     { NULL, 0, NULL, 0 }
 531 };
 532
 533
 534 struct entry kdc_database_entries[] = {
 535     { "acl_file", krb5_config_string, NULL, 0 },
 536     { "dbname", krb5_config_string, NULL, 0 },
 537     { "log_file", krb5_config_string, NULL, 0 },
 538     { "mkey_file", krb5_config_string, NULL, 0 },
 539     { "realm", krb5_config_string, NULL, 0 },
 540     { NULL, 0, NULL, 0 }
 541 };
 542
 543 struct entry kdc_entries[] = {
 544     { "addresses", krb5_config_string, NULL, 0 },
 545     { "allow-anonymous", krb5_config_string, check_boolean, 0 },
 546     { "allow-null-ticket-addresses", krb5_config_string, check_boolean, 0 },
 547     { "check-ticket-addresses", krb5_config_string, check_boolean, 0 },
 548     { "database", krb5_config_list, kdc_database_entries, 0 },
 549     { "detach", krb5_config_string, check_boolean, 0 },
 550     { "digests_allowed", krb5_config_string, NULL, 0 },
 551     { "disable-des", krb5_config_string, check_boolean, 0 },
 552     { "enable-524", krb5_config_string, check_boolean, 0 },
 553     { "enable-digest", krb5_config_string, check_boolean, 0 },
 554     { "enable-kaserver", krb5_config_string, check_boolean, 1 },
 555     { "enable-kerberos4", krb5_config_string, check_boolean, 1 },
 556     { "enable-kx509", krb5_config_string, check_boolean, 0 },
 557     { "enable-http", krb5_config_string, check_boolean, 0 },
 558     { "enable-pkinit", krb5_config_string, check_boolean, 0 },
 559     { "encode_as_rep_as_tgs_rep", krb5_config_string, check_boolean, 0 },
 560     { "enforce-transited-policy", krb5_config_string, NULL, 1 },
 561     { "hdb-ldap-create-base", krb5_config_string, NULL, 0 },
 562     { "iprop-acl", krb5_config_string, NULL, 0 },
 563     { "iprop-stats", krb5_config_string, NULL, 0 },
 564     { "kdc-request-log", krb5_config_string, NULL, 0 },
 565     { "kdc_warn_pwexpire", krb5_config_string, check_time, 0 },
 566     { "key-file", krb5_config_string, NULL, 0 },
 567     { "kx509_ca", krb5_config_string, NULL, 0 },
 568     { "kx509_include_pkinit_san", krb5_config_string, check_boolean, 0 },
 569     { "kx509_template", krb5_config_string, NULL, 0 },
 570     { "logging", krb5_config_string, check_log, 0 },
 571     { "max-kdc-datagram-reply-length", krb5_config_string, check_bytes, 0 },
 572     { "max-request", krb5_config_string, check_bytes, 0 },
 573     { "pkinit_allow_proxy_certificate", krb5_config_string, check_boolean, 0 },
 574     { "pkinit_anchors", krb5_config_string, NULL, 0 },
 575     { "pkinit_dh_min_bits", krb5_config_string, check_numeric, 0 },
 576     { "pkinit_identity", krb5_config_string, NULL, 0 },
 577     { "pkinit_kdc_friendly_name", krb5_config_string, NULL, 0 },
 578     { "pkinit_kdc_ocsp", krb5_config_string, NULL, 0 },
 579     { "pkinit_mappings_file", krb5_config_string, NULL, 0 },
 580     { "pkinit_pool", krb5_config_string, NULL, 0 },
 581     { "pkinit_principal_in_certificate", krb5_config_string, check_boolean, 0 },
 582     { "pkinit_revoke", krb5_config_string, NULL, 0 },
 583     { "pkinit_win2k_require_binding", krb5_config_string, check_boolean, 0 },
 584     { "ports", krb5_config_string, NULL, 0 },
 585     { "preauth-use-strongest-session-key", krb5_config_string, check_boolean, 0 },
 586     { "require_initial_kca_tickets", krb5_config_string, check_boolean, 0 },
 587     { "require-preauth", krb5_config_string, check_boolean, 0 },
 588     { "svc-use-strongest-session-key", krb5_config_string, check_boolean, 0 },
 589     { "tgt-use-strongest-session-key", krb5_config_string, check_boolean, 0 },
 590     { "transited-policy", krb5_config_string, NULL, 0 },
 591     { "use_2b", krb5_config_list, NULL, 0 },
 592     { "use-strongest-server-key", krb5_config_string, check_boolean, 0 },
 593     { "v4_realm", krb5_config_string, NULL, 0 },
 594     { NULL, 0, NULL, 0 }
 595 };
 596
 597 struct entry kadmin_entries[] = {
 598     { "allow_self_change_password", krb5_config_string, check_boolean, 0 },
 599     { "default_keys", krb5_config_string, NULL, 0 },
 600     { "password_lifetime", krb5_config_string, check_time, 0 },
 601     { "require-preauth", krb5_config_string, check_boolean, 0 },
 602     { "save-password", krb5_config_string, check_boolean, 0 },
 603     { "use_v4_salt", krb5_config_string, NULL, 0 },
 604     { NULL, 0, NULL, 0 }
 605 };
 606 struct entry log_strings[] = {
 607     { "", krb5_config_string, check_log, 0 },
 608     { NULL, 0, NULL, 0 }
 609 };
 610
 611
 612 /* MIT stuff */
 613 struct entry kdcdefaults_entries[] = {
 614     { "kdc_ports", krb5_config_string, mit_entry, 0 },
 615     { "v4_mode", krb5_config_string, mit_entry, 0 },
 616     { NULL, 0, NULL, 0 }
 617 };
 618
 619 struct entry capaths_entries[] = {
 620     { "", krb5_config_list, all_strings, 0 },
 621     { NULL, 0, NULL, 0 }
 622 };
 623
 624 struct entry kcm_entries[] = {
 625     { "detach", krb5_config_string, check_boolean, 0 },
 626     { "disallow-getting-krbtgt", krb5_config_string, check_boolean, 0 },
 627     { "logging", krb5_config_string, NULL, 0 },
 628     { "max-request", krb5_config_string, NULL, 0 },
 629     { "system_ccache", krb5_config_string, NULL, 0 },
 630     { NULL, 0, NULL, 0 }
 631 };
 632
 633 struct entry password_quality_entries[] = {
 634     { "check_function", krb5_config_string, NULL, 0 },
 635     { "check_library", krb5_config_string, NULL, 0 },
 636     { "external_program", krb5_config_string, NULL, 0 },
 637     { "min_classes", krb5_config_string, check_numeric, 0 },
 638     { "min_length", krb5_config_string, check_numeric, 0 },
 639     { "policies", krb5_config_string, NULL, 0 },
 640     { "policy_libraries", krb5_config_string, NULL, 0 },
 641     { "", krb5_config_list, all_strings, 0 },
 642     { NULL, 0, NULL, 0 }
 643 };
 644
 645 struct entry toplevel_sections[] = {
 646     { "appdefaults", krb5_config_list, appdefaults_entries, 0 },
 647     { "capaths", krb5_config_list, capaths_entries, 0 },
 648     { "domain_realm", krb5_config_list, all_strings, 0 },
 649     { "gssapi", krb5_config_list, NULL, 0 },
 650     { "kadmin", krb5_config_list, kadmin_entries, 0 },
 651     { "kcm", krb5_config_list, kcm_entries, 0 },
 652     { "kdc", krb5_config_list, kdc_entries, 0 },
 653     { "libdefaults" , krb5_config_list, libdefaults_entries, 0 },
 654     { "logging", krb5_config_list, log_strings, 0 },
 655     { "password_quality", krb5_config_list, password_quality_entries, 0 },
 656     { "realms", krb5_config_list, realms_foobar, 0 },
 657
 658     /* MIT stuff */
 659     { "kdcdefaults", krb5_config_list, kdcdefaults_entries, 0 },
 660     { NULL, 0, NULL, 0 }
 661 };
 662
 663
 664 static int
 665 check_section(krb5_context context, const char *path, krb5_config_section *cf,
 666               struct entry *entries)
 667 {
 668     int error = 0;
 669     krb5_config_section *p;
 670     struct entry *e;
 671
 672     char *local;
 673
 674     for(p = cf; p != NULL; p = p->next) {
 675         local = NULL;
 676         if (asprintf(&local, "%s/%s", path, p->name) < 0 || local == NULL)
 677             errx(1, "out of memory");
 678         for(e = entries; e->name != NULL; e++) {
 679             if(*e->name == '\0' || strcmp(e->name, p->name) == 0) {
 680                 if(e->type != p->type) {
 681                     krb5_warnx(context, "%s: unknown or wrong type", local);
 682                     error |= 1;
 683                 } else if(p->type == krb5_config_string && e->check_data != NULL) {
 684                     error |= (*(check_func_t)e->check_data)(context, local, p->u.string);
 685                 } else if(p->type == krb5_config_list && e->check_data != NULL) {
 686                     error |= check_section(context, local, p->u.list, e->check_data);
 687                 }
 688                 if(e->deprecated) {
 689                     krb5_warnx(context, "%s: is a deprecated entry", local);
 690                     error |= 1;
 691                 }
 692                 break;
 693             }
 694         }
 695         if(e->name == NULL) {
 696             krb5_warnx(context, "%s: unknown entry", local);
 697             error |= 1;
 698         }
 699         free(local);
 700     }
 701     return error;
 702 }
 703
 704
 705 static void
 706 dumpconfig(int level, krb5_config_section *top)
 707 {
 708     krb5_config_section *x;
 709     for(x = top; x; x = x->next) {
 710         switch(x->type) {
 711         case krb5_config_list:
 712             if(level == 0) {
 713                 printf("[%s]\n", x->name);
 714             } else {
 715                 printf("%*s%s = {\n", 4 * level, " ", x->name);
 716             }
 717             dumpconfig(level + 1, x->u.list);
 718             if(level > 0)
 719                 printf("%*s}\n", 4 * level, " ");
 720             break;
 721         case krb5_config_string:
 722             printf("%*s%s = %s\n", 4 * level, " ", x->name, x->u.string);
 723             break;
 724         }
 725     }
 726 }
 727
 728 int
 729 main(int argc, char **argv)
 730 {
 731     krb5_context context;
 732     krb5_error_code ret;
 733     krb5_config_section *tmp_cf;
 734     int optidx = 0;
 735
 736     setprogname (argv[0]);
 737
 738     ret = krb5_init_context(&context);
 739     if (ret == KRB5_CONFIG_BADFORMAT)
 740         errx (1, "krb5_init_context failed to parse configuration file");
 741     else if (ret)
 742         errx (1, "krb5_init_context failed with %d", ret);
 743
 744     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
 745         usage(1);
 746
 747     if (help_flag)
 748         usage (0);
 749
 750     if(version_flag){
 751         print_version(NULL);
 752         exit(0);
 753     }
 754
 755     argc -= optidx;
 756     argv += optidx;
 757
 758     tmp_cf = NULL;
 759     if(argc == 0)
 760         krb5_get_default_config_files(&argv);
 761
 762     while(*argv) {
 763         ret = krb5_config_parse_file_multi(context, *argv, &tmp_cf);
 764         if (ret != 0)
 765             krb5_warn (context, ret, "krb5_config_parse_file");
 766         argv++;
 767     }
 768
 769     if(dumpconfig_flag)
 770         dumpconfig(0, tmp_cf);
 771
 772     return check_section(context, "", tmp_cf, toplevel_sections);
 773 }