kdc/hprop.c

   1 /*
   2  * Copyright (c) 1997 - 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 #define KRB5_DEPRECATED /* uses v4 functions that will die */
  35
  36 #include "hprop.h"
  37
  38 static int version_flag;
  39 static int help_flag;
  40 static const char *ktname = HPROP_KEYTAB;
  41 static const char *database;
  42 static char *mkeyfile;
  43 static int to_stdout;
  44 static int verbose_flag;
  45 static int encrypt_flag;
  46 static int decrypt_flag;
  47 static hdb_master_key mkey5;
  48
  49 static char *source_type;
  50
  51 static char *afs_cell;
  52 static char *v4_realm;
  53
  54 static int kaspecials_flag;
  55 static int ka_use_null_salt;
  56
  57 static char *local_realm=NULL;
  58
  59 static int
  60 open_socket(krb5_context context, const char *hostname, const char *port)
  61 {
  62     struct addrinfo *ai, *a;
  63     struct addrinfo hints;
  64     int error;
  65
  66     memset (&hints, 0, sizeof(hints));
  67     hints.ai_socktype = SOCK_STREAM;
  68     hints.ai_protocol = IPPROTO_TCP;
  69
  70     error = getaddrinfo (hostname, port, &hints, &ai);
  71     if (error) {
  72         warnx ("%s: %s", hostname, gai_strerror(error));
  73         return -1;
  74     }
  75
  76     for (a = ai; a != NULL; a = a->ai_next) {
  77         int s;
  78
  79         s = socket (a->ai_family, a->ai_socktype, a->ai_protocol);
  80         if (s < 0)
  81             continue;
  82         if (connect (s, a->ai_addr, a->ai_addrlen) < 0) {
  83             warn ("connect(%s)", hostname);
  84             close (s);
  85             continue;
  86         }
  87         freeaddrinfo (ai);
  88         return s;
  89     }
  90     warnx ("failed to contact %s", hostname);
  91     freeaddrinfo (ai);
  92     return -1;
  93 }
  94
  95 krb5_error_code
  96 v5_prop(krb5_context context, HDB *db, hdb_entry_ex *entry, void *appdata)
  97 {
  98     krb5_error_code ret;
  99     struct prop_data *pd = appdata;
 100     krb5_data data;
 101
 102     if(encrypt_flag) {
 103         ret = hdb_seal_keys_mkey(context, &entry->entry, mkey5);
 104         if (ret) {
 105             krb5_warn(context, ret, "hdb_seal_keys_mkey");
 106             return ret;
 107         }
 108     }
 109     if(decrypt_flag) {
 110         ret = hdb_unseal_keys_mkey(context, &entry->entry, mkey5);
 111         if (ret) {
 112             krb5_warn(context, ret, "hdb_unseal_keys_mkey");
 113             return ret;
 114         }
 115     }
 116
 117     ret = hdb_entry2value(context, &entry->entry, &data);
 118     if(ret) {
 119         krb5_warn(context, ret, "hdb_entry2value");
 120         return ret;
 121     }
 122
 123     if(to_stdout)
 124         ret = krb5_write_message(context, &pd->sock, &data);
 125     else
 126         ret = krb5_write_priv_message(context, pd->auth_context,
 127                                       &pd->sock, &data);
 128     krb5_data_free(&data);
 129     return ret;
 130 }
 131
 132 #ifdef KRB4
 133 int
 134 v4_prop(void *arg, struct v4_principal *p)
 135 {
 136     struct prop_data *pd = arg;
 137     hdb_entry_ex ent;
 138     krb5_error_code ret;
 139
 140     memset(&ent, 0, sizeof(ent));
 141
 142     ret = krb5_425_conv_principal(pd->context, p->name, p->instance, v4_realm,
 143                                   &ent.entry.principal);
 144     if(ret) {
 145         krb5_warn(pd->context, ret,
 146                   "krb5_425_conv_principal %s.%s@%s",
 147                   p->name, p->instance, v4_realm);
 148         return 0;
 149     }
 150
 151     if(verbose_flag) {
 152         char *s;
 153         krb5_unparse_name_short(pd->context, ent.entry.principal, &s);
 154         krb5_warnx(pd->context, "%s.%s -> %s", p->name, p->instance, s);
 155         free(s);
 156     }
 157
 158     ent.entry.kvno = p->kvno;
 159     ent.entry.keys.len = 3;
 160     ent.entry.keys.val = malloc(ent.entry.keys.len * sizeof(*ent.entry.keys.val));
 161     if (ent.entry.keys.val == NULL)
 162         krb5_errx(pd->context, ENOMEM, "malloc");
 163     if(p->mkvno != -1) {
 164         ent.entry.keys.val[0].mkvno = malloc (sizeof(*ent.entry.keys.val[0].mkvno));
 165         if (ent.entry.keys.val[0].mkvno == NULL)
 166             krb5_errx(pd->context, ENOMEM, "malloc");
 167         *(ent.entry.keys.val[0].mkvno) = p->mkvno;
 168     } else
 169         ent.entry.keys.val[0].mkvno = NULL;
 170     ent.entry.keys.val[0].salt = calloc(1, sizeof(*ent.entry.keys.val[0].salt));
 171     if (ent.entry.keys.val[0].salt == NULL)
 172         krb5_errx(pd->context, ENOMEM, "calloc");
 173     ent.entry.keys.val[0].salt->type = KRB5_PADATA_PW_SALT;
 174     ent.entry.keys.val[0].key.keytype = ETYPE_DES_CBC_MD5;
 175     krb5_data_alloc(&ent.entry.keys.val[0].key.keyvalue, DES_KEY_SZ);
 176     memcpy(ent.entry.keys.val[0].key.keyvalue.data, p->key, 8);
 177
 178     copy_Key(&ent.entry.keys.val[0], &ent.entry.keys.val[1]);
 179     ent.entry.keys.val[1].key.keytype = ETYPE_DES_CBC_MD4;
 180     copy_Key(&ent.entry.keys.val[0], &ent.entry.keys.val[2]);
 181     ent.entry.keys.val[2].key.keytype = ETYPE_DES_CBC_CRC;
 182
 183     {
 184         int life = _krb5_krb_life_to_time(0, p->max_life);
 185         if(life == NEVERDATE){
 186             ent.entry.max_life = NULL;
 187         } else {
 188             /* clean up lifetime a bit */
 189             if(life > 86400)
 190                 life = (life + 86399) / 86400 * 86400;
 191             else if(life > 3600)
 192                 life = (life + 3599) / 3600 * 3600;
 193             ALLOC(ent.entry.max_life);
 194             *ent.entry.max_life = life;
 195         }
 196     }
 197
 198     ALLOC(ent.entry.valid_end);
 199     *ent.entry.valid_end = p->exp_date;
 200
 201     ret = krb5_make_principal(pd->context, &ent.entry.created_by.principal,
 202                               v4_realm,
 203                               "kadmin",
 204                               "hprop",
 205                               NULL);
 206     if(ret){
 207         krb5_warn(pd->context, ret, "krb5_make_principal");
 208         ret = 0;
 209         goto out;
 210     }
 211     ent.entry.created_by.time = time(NULL);
 212     ALLOC(ent.entry.modified_by);
 213     ret = krb5_425_conv_principal(pd->context, p->mod_name, p->mod_instance,
 214                                   v4_realm, &ent.entry.modified_by->principal);
 215     if(ret){
 216         krb5_warn(pd->context, ret, "%s.%s@%s", p->name, p->instance, v4_realm);
 217         ent.entry.modified_by->principal = NULL;
 218         ret = 0;
 219         goto out;
 220     }
 221     ent.entry.modified_by->time = p->mod_date;
 222
 223     ent.entry.flags.forwardable = 1;
 224     ent.entry.flags.renewable = 1;
 225     ent.entry.flags.proxiable = 1;
 226     ent.entry.flags.postdate = 1;
 227     ent.entry.flags.client = 1;
 228     ent.entry.flags.server = 1;
 229
 230     /* special case password changing service */
 231     if(strcmp(p->name, "changepw") == 0 &&
 232        strcmp(p->instance, "kerberos") == 0) {
 233         ent.entry.flags.forwardable = 0;
 234         ent.entry.flags.renewable = 0;
 235         ent.entry.flags.proxiable = 0;
 236         ent.entry.flags.postdate = 0;
 237         ent.entry.flags.initial = 1;
 238         ent.entry.flags.change_pw = 1;
 239     }
 240
 241     ret = v5_prop(pd->context, NULL, &ent, pd);
 242
 243     if (strcmp (p->name, "krbtgt") == 0
 244         && strcmp (v4_realm, p->instance) != 0) {
 245         krb5_free_principal (pd->context, ent.entry.principal);
 246         ret = krb5_425_conv_principal (pd->context, p->name,
 247                                        v4_realm, p->instance,
 248                                        &ent.entry.principal);
 249         if (ret == 0)
 250             ret = v5_prop (pd->context, NULL, &ent, pd);
 251     }
 252
 253   out:
 254     hdb_free_entry(pd->context, &ent);
 255     return ret;
 256 }
 257 #endif
 258
 259 #include "kadb.h"
 260
 261 /* read a `ka_entry' from `fd' at offset `pos' */
 262 static void
 263 read_block(krb5_context context, int fd, int32_t pos, void *buf, size_t len)
 264 {
 265     krb5_error_code ret;
 266 #ifdef HAVE_PREAD
 267     if((ret = pread(fd, buf, len, 64 + pos)) < 0)
 268         krb5_err(context, 1, errno, "pread(%u)", 64 + pos);
 269 #else
 270     if(lseek(fd, 64 + pos, SEEK_SET) == (off_t)-1)
 271         krb5_err(context, 1, errno, "lseek(%u)", 64 + pos);
 272     ret = read(fd, buf, len);
 273     if(ret < 0)
 274         krb5_err(context, 1, errno, "read(%lu)", (unsigned long)len);
 275 #endif
 276     if(ret != len)
 277         krb5_errx(context, 1, "read(%lu) = %u", (unsigned long)len, ret);
 278 }
 279
 280 #ifdef KRB4
 281
 282 static int
 283 ka_convert(struct prop_data *pd, int fd, struct ka_entry *ent)
 284 {
 285     int32_t flags = ntohl(ent->flags);
 286     krb5_error_code ret;
 287     hdb_entry_ex hdb;
 288
 289     if(!kaspecials_flag
 290        && (flags & KAFNORMAL) == 0) /* remove special entries */
 291         return 0;
 292     memset(&hdb, 0, sizeof(hdb));
 293     ret = krb5_425_conv_principal(pd->context, ent->name, ent->instance,
 294                                   v4_realm, &hdb.entry.principal);
 295     if(ret) {
 296         krb5_warn(pd->context, ret,
 297                   "krb5_425_conv_principal (%s.%s@%s)",
 298                   ent->name, ent->instance, v4_realm);
 299         return 0;
 300     }
 301     hdb.entry.kvno = ntohl(ent->kvno);
 302     hdb.entry.keys.len = 3;
 303     hdb.entry.keys.val =
 304         malloc(hdb.entry.keys.len * sizeof(*hdb.entry.keys.val));
 305     if (hdb.entry.keys.val == NULL)
 306         krb5_errx(pd->context, ENOMEM, "malloc");
 307     hdb.entry.keys.val[0].mkvno = NULL;
 308     hdb.entry.keys.val[0].salt = calloc(1, sizeof(*hdb.entry.keys.val[0].salt));
 309     if (hdb.entry.keys.val[0].salt == NULL)
 310         krb5_errx(pd->context, ENOMEM, "calloc");
 311     if (ka_use_null_salt) {
 312         hdb.entry.keys.val[0].salt->type = hdb_pw_salt;
 313         hdb.entry.keys.val[0].salt->salt.data = NULL;
 314         hdb.entry.keys.val[0].salt->salt.length = 0;
 315     } else {
 316         hdb.entry.keys.val[0].salt->type = hdb_afs3_salt;
 317         hdb.entry.keys.val[0].salt->salt.data = strdup(afs_cell);
 318         if (hdb.entry.keys.val[0].salt->salt.data == NULL)
 319             krb5_errx(pd->context, ENOMEM, "strdup");
 320         hdb.entry.keys.val[0].salt->salt.length = strlen(afs_cell);
 321     }
 322
 323     hdb.entry.keys.val[0].key.keytype = ETYPE_DES_CBC_MD5;
 324     krb5_data_copy(&hdb.entry.keys.val[0].key.keyvalue,
 325                    ent->key,
 326                    sizeof(ent->key));
 327     copy_Key(&hdb.entry.keys.val[0], &hdb.entry.keys.val[1]);
 328     hdb.entry.keys.val[1].key.keytype = ETYPE_DES_CBC_MD4;
 329     copy_Key(&hdb.entry.keys.val[0], &hdb.entry.keys.val[2]);
 330     hdb.entry.keys.val[2].key.keytype = ETYPE_DES_CBC_CRC;
 331
 332     ALLOC(hdb.entry.max_life);
 333     *hdb.entry.max_life = ntohl(ent->max_life);
 334
 335     if(ntohl(ent->valid_end) != NEVERDATE && ntohl(ent->valid_end) != 0xffffffff) {
 336         ALLOC(hdb.entry.valid_end);
 337         *hdb.entry.valid_end = ntohl(ent->valid_end);
 338     }
 339
 340     if (ntohl(ent->pw_change) != NEVERDATE &&
 341         ent->pw_expire != 255 &&
 342         ent->pw_expire != 0) {
 343         ALLOC(hdb.entry.pw_end);
 344         *hdb.entry.pw_end = ntohl(ent->pw_change)
 345             + 24 * 60 * 60 * ent->pw_expire;
 346     }
 347
 348     ret = krb5_make_principal(pd->context, &hdb.entry.created_by.principal,
 349                               v4_realm,
 350                               "kadmin",
 351                               "hprop",
 352                               NULL);
 353     hdb.entry.created_by.time = time(NULL);
 354
 355     if(ent->mod_ptr){
 356         struct ka_entry mod;
 357         ALLOC(hdb.entry.modified_by);
 358         read_block(pd->context, fd, ntohl(ent->mod_ptr), &mod, sizeof(mod));
 359
 360         krb5_425_conv_principal(pd->context, mod.name, mod.instance, v4_realm,
 361                                 &hdb.entry.modified_by->principal);
 362         hdb.entry.modified_by->time = ntohl(ent->mod_time);
 363         memset(&mod, 0, sizeof(mod));
 364     }
 365
 366     hdb.entry.flags.forwardable = 1;
 367     hdb.entry.flags.renewable = 1;
 368     hdb.entry.flags.proxiable = 1;
 369     hdb.entry.flags.postdate = 1;
 370     /* XXX - AFS 3.4a creates krbtgt.REALMOFCELL as NOTGS+NOSEAL */
 371     if (strcmp(ent->name, "krbtgt") == 0 &&
 372         (flags & (KAFNOTGS|KAFNOSEAL)) == (KAFNOTGS|KAFNOSEAL))
 373         flags &= ~(KAFNOTGS|KAFNOSEAL);
 374
 375     hdb.entry.flags.client = (flags & KAFNOTGS) == 0;
 376     hdb.entry.flags.server = (flags & KAFNOSEAL) == 0;
 377
 378     ret = v5_prop(pd->context, NULL, &hdb, pd);
 379     hdb_free_entry(pd->context, &hdb);
 380     return ret;
 381 }
 382
 383 static int
 384 ka_dump(struct prop_data *pd, const char *file)
 385 {
 386     struct ka_header header;
 387     int i;
 388     int fd = open(file, O_RDONLY);
 389
 390     if(fd < 0)
 391         krb5_err(pd->context, 1, errno, "open(%s)", file);
 392     read_block(pd->context, fd, 0, &header, sizeof(header));
 393     if(header.version1 != header.version2)
 394         krb5_errx(pd->context, 1, "Version mismatch in header: %ld/%ld",
 395                   (long)ntohl(header.version1), (long)ntohl(header.version2));
 396     if(ntohl(header.version1) != 5)
 397         krb5_errx(pd->context, 1, "Unknown database version %ld (expected 5)",
 398                   (long)ntohl(header.version1));
 399     for(i = 0; i < ntohl(header.hashsize); i++){
 400         int32_t pos = ntohl(header.hash[i]);
 401         while(pos){
 402             struct ka_entry ent;
 403             read_block(pd->context, fd, pos, &ent, sizeof(ent));
 404             ka_convert(pd, fd, &ent);
 405             pos = ntohl(ent.next);
 406         }
 407     }
 408     return 0;
 409 }
 410 #endif  /* KRB4 */
 411
 412
 413 struct getargs args[] = {
 414     { "master-key", 'm', arg_string, &mkeyfile, "v5 master key file", "file" },
 415     { "database", 'd',  arg_string, &database, "database", "file" },
 416     { "source",   0,    arg_string, &source_type, "type of database to read",
 417       "heimdal"
 418       "|mit-dump"
 419 #ifdef KRB4
 420       "|krb4-dump"
 421       "|kaserver"
 422 #endif
 423     },
 424
 425 #ifdef KRB4
 426     { "v4-realm", 'r',  arg_string, &v4_realm, "v4 realm to use" },
 427 #endif
 428     { "cell",     'c',  arg_string, &afs_cell, "name of AFS cell" },
 429 #ifdef KRB4
 430     { "kaspecials", 'S', arg_flag,   &kaspecials_flag, "dump KASPECIAL keys"},
 431 #endif
 432     { "keytab",   'k',  arg_string, &ktname, "keytab to use for authentication", "keytab" },
 433     { "v5-realm", 'R',  arg_string, &local_realm, "v5 realm to use" },
 434     { "decrypt",  'D',  arg_flag,   &decrypt_flag,   "decrypt keys" },
 435     { "encrypt",  'E',  arg_flag,   &encrypt_flag,   "encrypt keys" },
 436     { "stdout",   'n',  arg_flag,   &to_stdout, "dump to stdout" },
 437     { "verbose",  'v',  arg_flag, &verbose_flag },
 438     { "version",   0,   arg_flag, &version_flag },
 439     { "help",     'h',  arg_flag, &help_flag }
 440 };
 441
 442 static int num_args = sizeof(args) / sizeof(args[0]);
 443
 444 static void
 445 usage(int ret)
 446 {
 447     arg_printusage (args, num_args, NULL, "[host[:port]] ...");
 448     exit (ret);
 449 }
 450
 451 static void
 452 get_creds(krb5_context context, krb5_ccache *cache)
 453 {
 454     krb5_keytab keytab;
 455     krb5_principal client;
 456     krb5_error_code ret;
 457     krb5_get_init_creds_opt *init_opts;
 458     krb5_preauthtype preauth = KRB5_PADATA_ENC_TIMESTAMP;
 459     krb5_creds creds;
 460
 461     ret = krb5_kt_register(context, &hdb_kt_ops);
 462     if(ret) krb5_err(context, 1, ret, "krb5_kt_register");
 463
 464     ret = krb5_kt_resolve(context, ktname, &keytab);
 465     if(ret) krb5_err(context, 1, ret, "krb5_kt_resolve");
 466
 467     ret = krb5_make_principal(context, &client, NULL,
 468                               "kadmin", HPROP_NAME, NULL);
 469     if(ret) krb5_err(context, 1, ret, "krb5_make_principal");
 470
 471     ret = krb5_get_init_creds_opt_alloc(context, &init_opts);
 472     if(ret) krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
 473     krb5_get_init_creds_opt_set_preauth_list(init_opts, &preauth, 1);
 474
 475     ret = krb5_get_init_creds_keytab(context, &creds, client, keytab, 0, NULL, init_opts);
 476     if(ret) krb5_err(context, 1, ret, "krb5_get_init_creds");
 477
 478     krb5_get_init_creds_opt_free(context, init_opts);
 479
 480     ret = krb5_kt_close(context, keytab);
 481     if(ret) krb5_err(context, 1, ret, "krb5_kt_close");
 482
 483     ret = krb5_cc_new_unique(context, krb5_cc_type_memory, NULL, cache);
 484     if(ret) krb5_err(context, 1, ret, "krb5_cc_new_unique");
 485
 486     ret = krb5_cc_initialize(context, *cache, client);
 487     if(ret) krb5_err(context, 1, ret, "krb5_cc_initialize");
 488
 489     krb5_free_principal(context, client);
 490
 491     ret = krb5_cc_store_cred(context, *cache, &creds);
 492     if(ret) krb5_err(context, 1, ret, "krb5_cc_store_cred");
 493
 494     krb5_free_cred_contents(context, &creds);
 495 }
 496
 497 enum hprop_source {
 498     HPROP_HEIMDAL = 1,
 499     HPROP_KRB4_DUMP,
 500     HPROP_KASERVER,
 501     HPROP_MIT_DUMP
 502 };
 503
 504 #define IS_TYPE_V4(X) ((X) == HPROP_KRB4_DUMP || (X) == HPROP_KASERVER)
 505
 506 struct {
 507     int type;
 508     const char *name;
 509 } types[] = {
 510     { HPROP_HEIMDAL,    "heimdal" },
 511     { HPROP_KRB4_DUMP,  "krb4-dump" },
 512     { HPROP_KASERVER,   "kaserver" },
 513     { HPROP_MIT_DUMP,   "mit-dump" }
 514 };
 515
 516 static int
 517 parse_source_type(const char *s)
 518 {
 519     int i;
 520     for(i = 0; i < sizeof(types) / sizeof(types[0]); i++) {
 521         if(strstr(types[i].name, s) == types[i].name)
 522             return types[i].type;
 523     }
 524     return 0;
 525 }
 526
 527 static int
 528 iterate (krb5_context context,
 529          const char *database_name,
 530          HDB *db,
 531          int type,
 532          struct prop_data *pd)
 533 {
 534     int ret;
 535
 536     switch(type) {
 537 #ifdef KRB4
 538     case HPROP_KRB4_DUMP:
 539         ret = v4_prop_dump(pd, database_name);
 540         if(ret)
 541             krb5_warn(context, ret, "v4_prop_dump");
 542         break;
 543     case HPROP_KASERVER:
 544         ret = ka_dump(pd, database_name);
 545         if(ret)
 546             krb5_warn(context, ret, "ka_dump");
 547         break;
 548 #endif
 549     case HPROP_MIT_DUMP:
 550         ret = mit_prop_dump(pd, database_name);
 551         if (ret)
 552             krb5_warn(context, ret, "mit_prop_dump");
 553         break;
 554     case HPROP_HEIMDAL:
 555         ret = hdb_foreach(context, db, HDB_F_DECRYPT, v5_prop, pd);
 556         if(ret)
 557             krb5_warn(context, ret, "hdb_foreach");
 558         break;
 559     default:
 560         krb5_errx(context, 1, "unknown prop type: %d", type);
 561     }
 562     return ret;
 563 }
 564
 565 static int
 566 dump_database (krb5_context context, int type,
 567                const char *database_name, HDB *db)
 568 {
 569     krb5_error_code ret;
 570     struct prop_data pd;
 571     krb5_data data;
 572
 573     pd.context      = context;
 574     pd.auth_context = NULL;
 575     pd.sock         = STDOUT_FILENO;
 576
 577     ret = iterate (context, database_name, db, type, &pd);
 578     if (ret)
 579         krb5_errx(context, 1, "iterate failure");
 580     krb5_data_zero (&data);
 581     ret = krb5_write_message (context, &pd.sock, &data);
 582     if (ret)
 583         krb5_err(context, 1, ret, "krb5_write_message");
 584
 585     return 0;
 586 }
 587
 588 static int
 589 propagate_database (krb5_context context, int type,
 590                     const char *database_name,
 591                     HDB *db, krb5_ccache ccache,
 592                     int optidx, int argc, char **argv)
 593 {
 594     krb5_principal server;
 595     krb5_error_code ret;
 596     int i, failed = 0;
 597
 598     for(i = optidx; i < argc; i++){
 599         krb5_auth_context auth_context;
 600         int fd;
 601         struct prop_data pd;
 602         krb5_data data;
 603
 604         char *port, portstr[NI_MAXSERV];
 605         char *host = argv[i];
 606
 607         port = strchr(host, ':');
 608         if(port == NULL) {
 609             snprintf(portstr, sizeof(portstr), "%u",
 610                      ntohs(krb5_getportbyname (context, "hprop", "tcp",
 611                                                HPROP_PORT)));
 612             port = portstr;
 613         } else
 614             *port++ = '\0';
 615
 616         fd = open_socket(context, host, port);
 617         if(fd < 0) {
 618             failed++;
 619             krb5_warn (context, errno, "connect %s", host);
 620             continue;
 621         }
 622
 623         ret = krb5_sname_to_principal(context, argv[i],
 624                                       HPROP_NAME, KRB5_NT_SRV_HST, &server);
 625         if(ret) {
 626             failed++;
 627             krb5_warn(context, ret, "krb5_sname_to_principal(%s)", host);
 628             close(fd);
 629             continue;
 630         }
 631
 632         if (local_realm) {
 633             krb5_realm my_realm;
 634             krb5_get_default_realm(context,&my_realm);
 635             krb5_principal_set_realm(context,server,my_realm);
 636             krb5_xfree(my_realm);
 637         }
 638
 639         auth_context = NULL;
 640         ret = krb5_sendauth(context,
 641                             &auth_context,
 642                             &fd,
 643                             HPROP_VERSION,
 644                             NULL,
 645                             server,
 646                             AP_OPTS_MUTUAL_REQUIRED | AP_OPTS_USE_SUBKEY,
 647                             NULL, /* in_data */
 648                             NULL, /* in_creds */
 649                             ccache,
 650                             NULL,
 651                             NULL,
 652                             NULL);
 653
 654         krb5_free_principal(context, server);
 655
 656         if(ret) {
 657             failed++;
 658             krb5_warn(context, ret, "krb5_sendauth (%s)", host);
 659             close(fd);
 660             goto next_host;
 661         }
 662
 663         pd.context      = context;
 664         pd.auth_context = auth_context;
 665         pd.sock         = fd;
 666
 667         ret = iterate (context, database_name, db, type, &pd);
 668         if (ret) {
 669             krb5_warnx(context, "iterate to host %s failed", host);
 670             failed++;
 671             goto next_host;
 672         }
 673
 674         krb5_data_zero (&data);
 675         ret = krb5_write_priv_message(context, auth_context, &fd, &data);
 676         if(ret) {
 677             krb5_warn(context, ret, "krb5_write_priv_message");
 678             failed++;
 679             goto next_host;
 680         }
 681
 682         ret = krb5_read_priv_message(context, auth_context, &fd, &data);
 683         if(ret) {
 684             krb5_warn(context, ret, "krb5_read_priv_message: %s", host);
 685             failed++;
 686             goto next_host;
 687         } else
 688             krb5_data_free (&data);
 689
 690     next_host:
 691         krb5_auth_con_free(context, auth_context);
 692         close(fd);
 693     }
 694     if (failed)
 695         return 1;
 696     return 0;
 697 }
 698
 699 int
 700 main(int argc, char **argv)
 701 {
 702     krb5_error_code ret;
 703     krb5_context context;
 704     krb5_ccache ccache = NULL;
 705     HDB *db = NULL;
 706     int optidx = 0;
 707
 708     int type, exit_code;
 709
 710     setprogname(argv[0]);
 711
 712     if(getarg(args, num_args, argc, argv, &optidx))
 713         usage(1);
 714
 715     if(help_flag)
 716         usage(0);
 717
 718     if(version_flag){
 719         print_version(NULL);
 720         exit(0);
 721     }
 722
 723     ret = krb5_init_context(&context);
 724     if(ret)
 725         exit(1);
 726
 727     /* We may be reading an old database encrypted with a DES master key. */
 728     ret = krb5_allow_weak_crypto(context, 1);
 729     if(ret)
 730         krb5_err(context, 1, ret, "krb5_allow_weak_crypto");
 731
 732     if(local_realm)
 733         krb5_set_default_realm(context, local_realm);
 734
 735     if(v4_realm == NULL) {
 736         ret = krb5_get_default_realm(context, &v4_realm);
 737         if(ret)
 738             krb5_err(context, 1, ret, "krb5_get_default_realm");
 739     }
 740
 741     if(afs_cell == NULL) {
 742         afs_cell = strdup(v4_realm);
 743         if(afs_cell == NULL)
 744             krb5_errx(context, 1, "out of memory");
 745         strlwr(afs_cell);
 746     }
 747
 748
 749     if(encrypt_flag && decrypt_flag)
 750         krb5_errx(context, 1,
 751                   "only one of `--encrypt' and `--decrypt' is meaningful");
 752
 753     if(source_type != NULL) {
 754         type = parse_source_type(source_type);
 755         if(type == 0)
 756             krb5_errx(context, 1, "unknown source type `%s'", source_type);
 757     } else
 758         type = HPROP_HEIMDAL;
 759
 760     if(!to_stdout)
 761         get_creds(context, &ccache);
 762
 763     if(decrypt_flag || encrypt_flag) {
 764         ret = hdb_read_master_key(context, mkeyfile, &mkey5);
 765         if(ret && ret != ENOENT)
 766             krb5_err(context, 1, ret, "hdb_read_master_key");
 767         if(ret)
 768             krb5_errx(context, 1, "No master key file found");
 769     }
 770
 771     if (IS_TYPE_V4(type) && v4_realm == NULL)
 772         krb5_errx(context, 1, "Its a Kerberos 4 database "
 773                   "but no realm configured");
 774
 775     switch(type) {
 776     case HPROP_KASERVER:
 777         if (database == NULL)
 778             database = DEFAULT_DATABASE;
 779         ka_use_null_salt = krb5_config_get_bool_default(context, NULL, FALSE,
 780                                                         "hprop",
 781                                                         "afs_uses_null_salt",
 782                                                         NULL);
 783
 784         break;
 785     case HPROP_KRB4_DUMP:
 786         if (database == NULL)
 787             krb5_errx(context, 1, "no dump file specified");
 788
 789         break;
 790     case HPROP_MIT_DUMP:
 791         if (database == NULL)
 792             krb5_errx(context, 1, "no dump file specified");
 793         break;
 794     case HPROP_HEIMDAL:
 795         ret = hdb_create (context, &db, database);
 796         if(ret)
 797             krb5_err(context, 1, ret, "hdb_create: %s", database);
 798         ret = db->hdb_open(context, db, O_RDONLY, 0);
 799         if(ret)
 800             krb5_err(context, 1, ret, "db->hdb_open");
 801         break;
 802     default:
 803         krb5_errx(context, 1, "unknown dump type `%d'", type);
 804         break;
 805     }
 806
 807     if (to_stdout)
 808         exit_code = dump_database (context, type, database, db);
 809     else
 810         exit_code = propagate_database (context, type, database,
 811                                         db, ccache, optidx, argc, argv);
 812
 813     if(ccache != NULL)
 814         krb5_cc_destroy(context, ccache);
 815
 816     if(db != NULL)
 817         (*db->hdb_destroy)(context, db);
 818
 819     krb5_free_context(context);
 820     return exit_code;
 821 }