source3/libsmb/clikrb5.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    simple kerberos5 routines for active directory
   4    Copyright (C) Andrew Tridgell 2001
   5    Copyright (C) Luke Howard 2002-2003
   6    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
   7    Copyright (C) Guenther Deschner 2005
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #define KRB5_PRIVATE    1       /* this file uses PRIVATE interfaces! */
  25 #define KRB5_DEPRECATED 1       /* this file uses DEPRECATED interfaces! */
  26
  27 #include "includes.h"
  28
  29 #ifdef HAVE_KRB5
  30
  31 #ifdef HAVE_KRB5_KEYBLOCK_KEYVALUE
  32 #define KRB5_KEY_TYPE(k)        ((k)->keytype)
  33 #define KRB5_KEY_LENGTH(k)      ((k)->keyvalue.length)
  34 #define KRB5_KEY_DATA(k)        ((k)->keyvalue.data)
  35 #else
  36 #define KRB5_KEY_TYPE(k)        ((k)->enctype)
  37 #define KRB5_KEY_LENGTH(k)      ((k)->length)
  38 #define KRB5_KEY_DATA(k)        ((k)->contents)
  39 #endif /* HAVE_KRB5_KEYBLOCK_KEYVALUE */
  40
  41 /**************************************************************
  42  Wrappers around kerberos string functions that convert from
  43  utf8 -> unix charset and vica versa.
  44 **************************************************************/
  45
  46 /**************************************************************
  47  krb5_parse_name that takes a UNIX charset.
  48 **************************************************************/
  49
  50  krb5_error_code smb_krb5_parse_name(krb5_context context,
  51                                 const char *name, /* in unix charset */
  52                                 krb5_principal *principal)
  53 {
  54         krb5_error_code ret;
  55         char *utf8_name;
  56
  57         if (push_utf8_allocate(&utf8_name, name) == (size_t)-1) {
  58                 return ENOMEM;
  59         }
  60
  61         ret = krb5_parse_name(context, utf8_name, principal);
  62         SAFE_FREE(utf8_name);
  63         return ret;
  64 }
  65
  66 #ifdef HAVE_KRB5_PARSE_NAME_NOREALM
  67 /**************************************************************
  68  krb5_parse_name_norealm that takes a UNIX charset.
  69 **************************************************************/
  70
  71 static krb5_error_code smb_krb5_parse_name_norealm_conv(krb5_context context,
  72                                 const char *name, /* in unix charset */
  73                                 krb5_principal *principal)
  74 {
  75         krb5_error_code ret;
  76         char *utf8_name;
  77
  78         if (push_utf8_allocate(&utf8_name, name) == (size_t)-1) {
  79                 return ENOMEM;
  80         }
  81
  82         ret = krb5_parse_name_norealm(context, utf8_name, principal);
  83         SAFE_FREE(utf8_name);
  84         return ret;
  85 }
  86 #endif
  87
  88 /**************************************************************
  89  krb5_parse_name that returns a UNIX charset name. Must
  90  be freed with normal free() call.
  91 **************************************************************/
  92
  93  krb5_error_code smb_krb5_unparse_name(krb5_context context,
  94                                         krb5_const_principal principal,
  95                                         char **unix_name)
  96 {
  97         krb5_error_code ret;
  98         char *utf8_name;
  99
 100         ret = krb5_unparse_name(context, principal, &utf8_name);
 101         if (ret) {
 102                 return ret;
 103         }
 104
 105         if (pull_utf8_allocate(unix_name, utf8_name)==-1) {
 106                 krb5_free_unparsed_name(context, utf8_name);
 107                 return ENOMEM;
 108         }
 109         krb5_free_unparsed_name(context, utf8_name);
 110         return 0;
 111 }
 112
 113 #ifndef HAVE_KRB5_SET_REAL_TIME
 114 /*
 115  * This function is not in the Heimdal mainline.
 116  */
 117  krb5_error_code krb5_set_real_time(krb5_context context, int32_t seconds, int32_t microseconds)
 118 {
 119         krb5_error_code ret;
 120         int32_t sec, usec;
 121
 122         ret = krb5_us_timeofday(context, &sec, &usec);
 123         if (ret)
 124                 return ret;
 125
 126         context->kdc_sec_offset = seconds - sec;
 127         context->kdc_usec_offset = microseconds - usec;
 128
 129         return 0;
 130 }
 131 #endif
 132
 133 #if defined(HAVE_KRB5_SET_DEFAULT_IN_TKT_ETYPES) && !defined(HAVE_KRB5_SET_DEFAULT_TGS_KTYPES)
 134  krb5_error_code krb5_set_default_tgs_ktypes(krb5_context ctx, const krb5_enctype *enc)
 135 {
 136         return krb5_set_default_in_tkt_etypes(ctx, enc);
 137 }
 138 #endif
 139
 140 #if defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS)
 141 /* HEIMDAL */
 142  void setup_kaddr( krb5_address *pkaddr, struct sockaddr *paddr)
 143 {
 144         pkaddr->addr_type = KRB5_ADDRESS_INET;
 145         pkaddr->address.length = sizeof(((struct sockaddr_in *)paddr)->sin_addr);
 146         pkaddr->address.data = (char *)&(((struct sockaddr_in *)paddr)->sin_addr);
 147 }
 148 #elif defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS)
 149 /* MIT */
 150  void setup_kaddr( krb5_address *pkaddr, struct sockaddr *paddr)
 151 {
 152         pkaddr->addrtype = ADDRTYPE_INET;
 153         pkaddr->length = sizeof(((struct sockaddr_in *)paddr)->sin_addr);
 154         pkaddr->contents = (krb5_octet *)&(((struct sockaddr_in *)paddr)->sin_addr);
 155 }
 156 #else
 157 #error UNKNOWN_ADDRTYPE
 158 #endif
 159
 160 #if defined(HAVE_KRB5_PRINCIPAL2SALT) && defined(HAVE_KRB5_USE_ENCTYPE) && defined(HAVE_KRB5_STRING_TO_KEY) && defined(HAVE_KRB5_ENCRYPT_BLOCK)
 161  int create_kerberos_key_from_string_direct(krb5_context context,
 162                                         krb5_principal host_princ,
 163                                         krb5_data *password,
 164                                         krb5_keyblock *key,
 165                                         krb5_enctype enctype)
 166 {
 167         int ret;
 168         krb5_data salt;
 169         krb5_encrypt_block eblock;
 170
 171         ret = krb5_principal2salt(context, host_princ, &salt);
 172         if (ret) {
 173                 DEBUG(1,("krb5_principal2salt failed (%s)\n", error_message(ret)));
 174                 return ret;
 175         }
 176         krb5_use_enctype(context, &eblock, enctype);
 177         ret = krb5_string_to_key(context, &eblock, key, password, &salt);
 178         SAFE_FREE(salt.data);
 179         return ret;
 180 }
 181 #elif defined(HAVE_KRB5_GET_PW_SALT) && defined(HAVE_KRB5_STRING_TO_KEY_SALT)
 182  int create_kerberos_key_from_string_direct(krb5_context context,
 183                                         krb5_principal host_princ,
 184                                         krb5_data *password,
 185                                         krb5_keyblock *key,
 186                                         krb5_enctype enctype)
 187 {
 188         int ret;
 189         krb5_salt salt;
 190
 191         ret = krb5_get_pw_salt(context, host_princ, &salt);
 192         if (ret) {
 193                 DEBUG(1,("krb5_get_pw_salt failed (%s)\n", error_message(ret)));
 194                 return ret;
 195         }
 196
 197         ret = krb5_string_to_key_salt(context, enctype, password->data, salt, key);
 198         krb5_free_salt(context, salt);
 199         return ret;
 200 }
 201 #else
 202 #error UNKNOWN_CREATE_KEY_FUNCTIONS
 203 #endif
 204
 205  int create_kerberos_key_from_string(krb5_context context,
 206                                         krb5_principal host_princ,
 207                                         krb5_data *password,
 208                                         krb5_keyblock *key,
 209                                         krb5_enctype enctype)
 210 {
 211         krb5_principal salt_princ = NULL;
 212         int ret;
 213         /*
 214          * Check if we've determined that the KDC is salting keys for this
 215          * principal/enctype in a non-obvious way.  If it is, try to match
 216          * its behavior.
 217          */
 218         salt_princ = kerberos_fetch_salt_princ_for_host_princ(context, host_princ, enctype);
 219         ret = create_kerberos_key_from_string_direct(context, salt_princ ? salt_princ : host_princ, password, key, enctype);
 220         if (salt_princ) {
 221                 krb5_free_principal(context, salt_princ);
 222         }
 223         return ret;
 224 }
 225
 226 #if defined(HAVE_KRB5_GET_PERMITTED_ENCTYPES)
 227  krb5_error_code get_kerberos_allowed_etypes(krb5_context context,
 228                                             krb5_enctype **enctypes)
 229 {
 230         return krb5_get_permitted_enctypes(context, enctypes);
 231 }
 232 #elif defined(HAVE_KRB5_GET_DEFAULT_IN_TKT_ETYPES)
 233  krb5_error_code get_kerberos_allowed_etypes(krb5_context context,
 234                                             krb5_enctype **enctypes)
 235 {
 236         return krb5_get_default_in_tkt_etypes(context, enctypes);
 237 }
 238 #else
 239 #error UNKNOWN_GET_ENCTYPES_FUNCTIONS
 240 #endif
 241
 242  void free_kerberos_etypes(krb5_context context,
 243                            krb5_enctype *enctypes)
 244 {
 245 #if defined(HAVE_KRB5_FREE_KTYPES)
 246         krb5_free_ktypes(context, enctypes);
 247         return;
 248 #else
 249         SAFE_FREE(enctypes);
 250         return;
 251 #endif
 252 }
 253
 254 #if defined(HAVE_KRB5_AUTH_CON_SETKEY) && !defined(HAVE_KRB5_AUTH_CON_SETUSERUSERKEY)
 255  krb5_error_code krb5_auth_con_setuseruserkey(krb5_context context,
 256                                         krb5_auth_context auth_context,
 257                                         krb5_keyblock *keyblock)
 258 {
 259         return krb5_auth_con_setkey(context, auth_context, keyblock);
 260 }
 261 #endif
 262
 263 BOOL unwrap_pac(TALLOC_CTX *mem_ctx, DATA_BLOB *auth_data, DATA_BLOB *unwrapped_pac_data)
 264 {
 265         DATA_BLOB pac_contents;
 266         ASN1_DATA data;
 267         int data_type;
 268
 269         if (!auth_data->length) {
 270                 return False;
 271         }
 272
 273         asn1_load(&data, *auth_data);
 274         asn1_start_tag(&data, ASN1_SEQUENCE(0));
 275         asn1_start_tag(&data, ASN1_SEQUENCE(0));
 276         asn1_start_tag(&data, ASN1_CONTEXT(0));
 277         asn1_read_Integer(&data, &data_type);
 278
 279         if (data_type != KRB5_AUTHDATA_WIN2K_PAC ) {
 280                 DEBUG(10,("authorization data is not a Windows PAC (type: %d)\n", data_type));
 281                 asn1_free(&data);
 282                 return False;
 283         }
 284
 285         asn1_end_tag(&data);
 286         asn1_start_tag(&data, ASN1_CONTEXT(1));
 287         asn1_read_OctetString(&data, &pac_contents);
 288         asn1_end_tag(&data);
 289         asn1_end_tag(&data);
 290         asn1_end_tag(&data);
 291         asn1_free(&data);
 292
 293         *unwrapped_pac_data = data_blob_talloc(mem_ctx, pac_contents.data, pac_contents.length);
 294
 295         data_blob_free(&pac_contents);
 296
 297         return True;
 298 }
 299
 300  BOOL get_auth_data_from_tkt(TALLOC_CTX *mem_ctx, DATA_BLOB *auth_data, krb5_ticket *tkt)
 301 {
 302         DATA_BLOB auth_data_wrapped;
 303         BOOL got_auth_data_pac = False;
 304         int i;
 305
 306 #if defined(HAVE_KRB5_TKT_ENC_PART2)
 307         if (tkt->enc_part2 && tkt->enc_part2->authorization_data &&
 308             tkt->enc_part2->authorization_data[0] &&
 309             tkt->enc_part2->authorization_data[0]->length)
 310         {
 311                 for (i = 0; tkt->enc_part2->authorization_data[i] != NULL; i++) {
 312
 313                         if (tkt->enc_part2->authorization_data[i]->ad_type !=
 314                             KRB5_AUTHDATA_IF_RELEVANT) {
 315                                 DEBUG(10,("get_auth_data_from_tkt: ad_type is %d\n",
 316                                         tkt->enc_part2->authorization_data[i]->ad_type));
 317                                 continue;
 318                         }
 319
 320                         auth_data_wrapped = data_blob(tkt->enc_part2->authorization_data[i]->contents,
 321                                                       tkt->enc_part2->authorization_data[i]->length);
 322
 323                         /* check if it is a PAC */
 324                         got_auth_data_pac = unwrap_pac(mem_ctx, &auth_data_wrapped, auth_data);
 325                         data_blob_free(&auth_data_wrapped);
 326
 327                         if (!got_auth_data_pac) {
 328                                 continue;
 329                         }
 330                 }
 331
 332                 return got_auth_data_pac;
 333         }
 334
 335 #else
 336         if (tkt->ticket.authorization_data &&
 337             tkt->ticket.authorization_data->len)
 338         {
 339                 for (i = 0; i < tkt->ticket.authorization_data->len; i++) {
 340
 341                         if (tkt->ticket.authorization_data->val[i].ad_type !=
 342                             KRB5_AUTHDATA_IF_RELEVANT) {
 343                                 DEBUG(10,("get_auth_data_from_tkt: ad_type is %d\n",
 344                                         tkt->ticket.authorization_data->val[i].ad_type));
 345                                 continue;
 346                         }
 347
 348                         auth_data_wrapped = data_blob(tkt->ticket.authorization_data->val[i].ad_data.data,
 349                                                       tkt->ticket.authorization_data->val[i].ad_data.length);
 350
 351                         /* check if it is a PAC */
 352                         got_auth_data_pac = unwrap_pac(mem_ctx, &auth_data_wrapped, auth_data);
 353                         data_blob_free(&auth_data_wrapped);
 354
 355                         if (!got_auth_data_pac) {
 356                                 continue;
 357                         }
 358                 }
 359
 360                 return got_auth_data_pac;
 361         }
 362 #endif
 363         return False;
 364 }
 365
 366  krb5_const_principal get_principal_from_tkt(krb5_ticket *tkt)
 367 {
 368 #if defined(HAVE_KRB5_TKT_ENC_PART2)
 369         return tkt->enc_part2->client;
 370 #else
 371         return tkt->client;
 372 #endif
 373 }
 374
 375 #if !defined(HAVE_KRB5_LOCATE_KDC)
 376  krb5_error_code krb5_locate_kdc(krb5_context ctx, const krb5_data *realm, struct sockaddr **addr_pp, int *naddrs, int get_masters)
 377 {
 378         krb5_krbhst_handle hnd;
 379         krb5_krbhst_info *hinfo;
 380         krb5_error_code rc;
 381         int num_kdcs, i;
 382         struct sockaddr *sa;
 383         struct addrinfo *ai;
 384
 385         *addr_pp = NULL;
 386         *naddrs = 0;
 387
 388         rc = krb5_krbhst_init(ctx, realm->data, KRB5_KRBHST_KDC, &hnd);
 389         if (rc) {
 390                 DEBUG(0, ("krb5_locate_kdc: krb5_krbhst_init failed (%s)\n", error_message(rc)));
 391                 return rc;
 392         }
 393
 394         for ( num_kdcs = 0; (rc = krb5_krbhst_next(ctx, hnd, &hinfo) == 0); num_kdcs++)
 395                 ;
 396
 397         krb5_krbhst_reset(ctx, hnd);
 398
 399         if (!num_kdcs) {
 400                 DEBUG(0, ("krb5_locate_kdc: zero kdcs found !\n"));
 401                 krb5_krbhst_free(ctx, hnd);
 402                 return -1;
 403         }
 404
 405         sa = SMB_MALLOC_ARRAY( struct sockaddr, num_kdcs );
 406         if (!sa) {
 407                 DEBUG(0, ("krb5_locate_kdc: malloc failed\n"));
 408                 krb5_krbhst_free(ctx, hnd);
 409                 naddrs = 0;
 410                 return -1;
 411         }
 412
 413         memset(sa, '\0', sizeof(struct sockaddr) * num_kdcs );
 414
 415         for (i = 0; i < num_kdcs && (rc = krb5_krbhst_next(ctx, hnd, &hinfo) == 0); i++) {
 416
 417 #if defined(HAVE_KRB5_KRBHST_GET_ADDRINFO)
 418                 rc = krb5_krbhst_get_addrinfo(ctx, hinfo, &ai);
 419                 if (rc) {
 420                         DEBUG(0,("krb5_krbhst_get_addrinfo failed: %s\n", error_message(rc)));
 421                         continue;
 422                 }
 423 #endif
 424                 if (hinfo->ai && hinfo->ai->ai_family == AF_INET)
 425                         memcpy(&sa[i], hinfo->ai->ai_addr, sizeof(struct sockaddr));
 426         }
 427
 428         krb5_krbhst_free(ctx, hnd);
 429
 430         *naddrs = num_kdcs;
 431         *addr_pp = sa;
 432         return 0;
 433 }
 434 #endif
 435
 436 #if !defined(HAVE_KRB5_FREE_UNPARSED_NAME)
 437  void krb5_free_unparsed_name(krb5_context context, char *val)
 438 {
 439         SAFE_FREE(val);
 440 }
 441 #endif
 442
 443  void kerberos_free_data_contents(krb5_context context, krb5_data *pdata)
 444 {
 445 #if defined(HAVE_KRB5_FREE_DATA_CONTENTS)
 446         if (pdata->data) {
 447                 krb5_free_data_contents(context, pdata);
 448         }
 449 #else
 450         SAFE_FREE(pdata->data);
 451 #endif
 452 }
 453
 454  void kerberos_set_creds_enctype(krb5_creds *pcreds, int enctype)
 455 {
 456 #if defined(HAVE_KRB5_KEYBLOCK_IN_CREDS)
 457         KRB5_KEY_TYPE((&pcreds->keyblock)) = enctype;
 458 #elif defined(HAVE_KRB5_SESSION_IN_CREDS)
 459         KRB5_KEY_TYPE((&pcreds->session)) = enctype;
 460 #else
 461 #error UNKNOWN_KEYBLOCK_MEMBER_IN_KRB5_CREDS_STRUCT
 462 #endif
 463 }
 464
 465  BOOL kerberos_compatible_enctypes(krb5_context context,
 466                                   krb5_enctype enctype1,
 467                                   krb5_enctype enctype2)
 468 {
 469 #if defined(HAVE_KRB5_C_ENCTYPE_COMPARE)
 470         krb5_boolean similar = 0;
 471
 472         krb5_c_enctype_compare(context, enctype1, enctype2, &similar);
 473         return similar ? True : False;
 474 #elif defined(HAVE_KRB5_ENCTYPES_COMPATIBLE_KEYS)
 475         return krb5_enctypes_compatible_keys(context, enctype1, enctype2) ? True : False;
 476 #endif
 477 }
 478
 479 static BOOL ads_cleanup_expired_creds(krb5_context context,
 480                                       krb5_ccache  ccache,
 481                                       krb5_creds  *credsp)
 482 {
 483         krb5_error_code retval;
 484         const char *cc_type = krb5_cc_get_type(context, ccache);
 485
 486         DEBUG(3, ("ads_cleanup_expired_creds: Ticket in ccache[%s:%s] expiration %s\n",
 487                   cc_type, krb5_cc_get_name(context, ccache),
 488                   http_timestring(credsp->times.endtime)));
 489
 490         /* we will probably need new tickets if the current ones
 491            will expire within 10 seconds.
 492         */
 493         if (credsp->times.endtime >= (time(NULL) + 10))
 494                 return False;
 495
 496         /* heimdal won't remove creds from a file ccache, and
 497            perhaps we shouldn't anyway, since internally we
 498            use memory ccaches, and a FILE one probably means that
 499            we're using creds obtained outside of our exectuable
 500         */
 501         if (strequal(cc_type, "FILE")) {
 502                 DEBUG(5, ("ads_cleanup_expired_creds: We do not remove creds from a %s ccache\n", cc_type));
 503                 return False;
 504         }
 505
 506         retval = krb5_cc_remove_cred(context, ccache, 0, credsp);
 507         if (retval) {
 508                 DEBUG(1, ("ads_cleanup_expired_creds: krb5_cc_remove_cred failed, err %s\n",
 509                           error_message(retval)));
 510                 /* If we have an error in this, we want to display it,
 511                    but continue as though we deleted it */
 512         }
 513         return True;
 514 }
 515
 516 /*
 517   we can't use krb5_mk_req because w2k wants the service to be in a particular format
 518 */
 519 static krb5_error_code ads_krb5_mk_req(krb5_context context,
 520                                        krb5_auth_context *auth_context,
 521                                        const krb5_flags ap_req_options,
 522                                        const char *principal,
 523                                        krb5_ccache ccache,
 524                                        krb5_data *outbuf)
 525 {
 526         krb5_error_code           retval;
 527         krb5_principal    server;
 528         krb5_creds              * credsp;
 529         krb5_creds                creds;
 530         krb5_data in_data;
 531         BOOL creds_ready = False;
 532         int i = 0, maxtries = 3;
 533
 534         retval = smb_krb5_parse_name(context, principal, &server);
 535         if (retval) {
 536                 DEBUG(1,("ads_krb5_mk_req: Failed to parse principal %s\n", principal));
 537                 return retval;
 538         }
 539
 540         /* obtain ticket & session key */
 541         ZERO_STRUCT(creds);
 542         if ((retval = krb5_copy_principal(context, server, &creds.server))) {
 543                 DEBUG(1,("ads_krb5_mk_req: krb5_copy_principal failed (%s)\n",
 544                          error_message(retval)));
 545                 goto cleanup_princ;
 546         }
 547
 548         if ((retval = krb5_cc_get_principal(context, ccache, &creds.client))) {
 549                 /* This can commonly fail on smbd startup with no ticket in the cache.
 550                  * Report at higher level than 1. */
 551                 DEBUG(3,("ads_krb5_mk_req: krb5_cc_get_principal failed (%s)\n",
 552                          error_message(retval)));
 553                 goto cleanup_creds;
 554         }
 555
 556         while (!creds_ready && (i < maxtries)) {
 557                 if ((retval = krb5_get_credentials(context, 0, ccache,
 558                                                    &creds, &credsp))) {
 559                         DEBUG(1,("ads_krb5_mk_req: krb5_get_credentials failed for %s (%s)\n",
 560                                  principal, error_message(retval)));
 561                         goto cleanup_creds;
 562                 }
 563
 564                 /* cope with ticket being in the future due to clock skew */
 565                 if ((unsigned)credsp->times.starttime > time(NULL)) {
 566                         time_t t = time(NULL);
 567                         int time_offset =(int)((unsigned)credsp->times.starttime-t);
 568                         DEBUG(4,("ads_krb5_mk_req: Advancing clock by %d seconds to cope with clock skew\n", time_offset));
 569                         krb5_set_real_time(context, t + time_offset + 1, 0);
 570                 }
 571
 572                 if (!ads_cleanup_expired_creds(context, ccache, credsp))
 573                         creds_ready = True;
 574
 575                 i++;
 576         }
 577
 578         DEBUG(10,("ads_krb5_mk_req: Ticket (%s) in ccache (%s:%s) is valid until: (%s - %u)\n",
 579                   principal, krb5_cc_get_type(context, ccache), krb5_cc_get_name(context, ccache),
 580                   http_timestring((unsigned)credsp->times.endtime),
 581                   (unsigned)credsp->times.endtime));
 582
 583         in_data.length = 0;
 584         retval = krb5_mk_req_extended(context, auth_context, ap_req_options,
 585                                       &in_data, credsp, outbuf);
 586         if (retval) {
 587                 DEBUG(1,("ads_krb5_mk_req: krb5_mk_req_extended failed (%s)\n",
 588                          error_message(retval)));
 589         }
 590
 591         krb5_free_creds(context, credsp);
 592
 593 cleanup_creds:
 594         krb5_free_cred_contents(context, &creds);
 595
 596 cleanup_princ:
 597         krb5_free_principal(context, server);
 598
 599         return retval;
 600 }
 601
 602 /*
 603   get a kerberos5 ticket for the given service
 604 */
 605 int cli_krb5_get_ticket(const char *principal, time_t time_offset,
 606                         DATA_BLOB *ticket, DATA_BLOB *session_key_krb5,
 607                         uint32 extra_ap_opts, const char *ccname)
 608 {
 609         krb5_error_code retval;
 610         krb5_data packet;
 611         krb5_context context = NULL;
 612         krb5_ccache ccdef = NULL;
 613         krb5_auth_context auth_context = NULL;
 614         krb5_enctype enc_types[] = {
 615 #ifdef ENCTYPE_ARCFOUR_HMAC
 616                 ENCTYPE_ARCFOUR_HMAC,
 617 #endif
 618                 ENCTYPE_DES_CBC_MD5,
 619                 ENCTYPE_DES_CBC_CRC,
 620                 ENCTYPE_NULL};
 621
 622         initialize_krb5_error_table();
 623         retval = krb5_init_context(&context);
 624         if (retval) {
 625                 DEBUG(1,("cli_krb5_get_ticket: krb5_init_context failed (%s)\n",
 626                          error_message(retval)));
 627                 goto failed;
 628         }
 629
 630         if (time_offset != 0) {
 631                 krb5_set_real_time(context, time(NULL) + time_offset, 0);
 632         }
 633
 634         if ((retval = krb5_cc_resolve(context, ccname ?
 635                         ccname : krb5_cc_default_name(context), &ccdef))) {
 636                 DEBUG(1,("cli_krb5_get_ticket: krb5_cc_default failed (%s)\n",
 637                          error_message(retval)));
 638                 goto failed;
 639         }
 640
 641         if ((retval = krb5_set_default_tgs_ktypes(context, enc_types))) {
 642                 DEBUG(1,("cli_krb5_get_ticket: krb5_set_default_tgs_ktypes failed (%s)\n",
 643                          error_message(retval)));
 644                 goto failed;
 645         }
 646
 647         if ((retval = ads_krb5_mk_req(context,
 648                                         &auth_context,
 649                                         AP_OPTS_USE_SUBKEY | (krb5_flags)extra_ap_opts,
 650                                         principal,
 651                                         ccdef, &packet))) {
 652                 goto failed;
 653         }
 654
 655         get_krb5_smb_session_key(context, auth_context, session_key_krb5, False);
 656
 657         *ticket = data_blob(packet.data, packet.length);
 658
 659         kerberos_free_data_contents(context, &packet);
 660
 661 failed:
 662
 663         if ( context ) {
 664                 if (ccdef)
 665                         krb5_cc_close(context, ccdef);
 666                 if (auth_context)
 667                         krb5_auth_con_free(context, auth_context);
 668                 krb5_free_context(context);
 669         }
 670
 671         return retval;
 672 }
 673
 674  BOOL get_krb5_smb_session_key(krb5_context context, krb5_auth_context auth_context, DATA_BLOB *session_key, BOOL remote)
 675  {
 676         krb5_keyblock *skey;
 677         krb5_error_code err;
 678         BOOL ret = False;
 679
 680         if (remote)
 681                 err = krb5_auth_con_getremotesubkey(context, auth_context, &skey);
 682         else
 683                 err = krb5_auth_con_getlocalsubkey(context, auth_context, &skey);
 684         if (err == 0 && skey != NULL) {
 685                 DEBUG(10, ("Got KRB5 session key of length %d\n",  (int)KRB5_KEY_LENGTH(skey)));
 686                 *session_key = data_blob(KRB5_KEY_DATA(skey), KRB5_KEY_LENGTH(skey));
 687                 dump_data_pw("KRB5 Session Key:\n", session_key->data, session_key->length);
 688
 689                 ret = True;
 690
 691                 krb5_free_keyblock(context, skey);
 692         } else {
 693                 DEBUG(10, ("KRB5 error getting session key %d\n", err));
 694         }
 695
 696         return ret;
 697  }
 698
 699
 700 #if defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING) && !defined(HAVE_KRB5_PRINC_COMPONENT)
 701  const krb5_data *krb5_princ_component(krb5_context context, krb5_principal principal, int i );
 702
 703  const krb5_data *krb5_princ_component(krb5_context context, krb5_principal principal, int i )
 704 {
 705         static krb5_data kdata;
 706
 707         kdata.data = (char *)krb5_principal_get_comp_string(context, principal, i);
 708         kdata.length = strlen(kdata.data);
 709         return &kdata;
 710 }
 711 #endif
 712
 713  krb5_error_code smb_krb5_kt_free_entry(krb5_context context, krb5_keytab_entry *kt_entry)
 714 {
 715 #if defined(HAVE_KRB5_KT_FREE_ENTRY)
 716         return krb5_kt_free_entry(context, kt_entry);
 717 #elif defined(HAVE_KRB5_FREE_KEYTAB_ENTRY_CONTENTS)
 718         return krb5_free_keytab_entry_contents(context, kt_entry);
 719 #else
 720 #error UNKNOWN_KT_FREE_FUNCTION
 721 #endif
 722 }
 723
 724  void smb_krb5_checksum_from_pac_sig(krb5_checksum *cksum,
 725                                     PAC_SIGNATURE_DATA *sig)
 726 {
 727 #ifdef HAVE_CHECKSUM_IN_KRB5_CHECKSUM
 728         cksum->cksumtype        = (krb5_cksumtype)sig->type;
 729         cksum->checksum.length  = sig->signature.buf_len;
 730         cksum->checksum.data    = sig->signature.buffer;
 731 #else
 732         cksum->checksum_type    = (krb5_cksumtype)sig->type;
 733         cksum->length           = sig->signature.buf_len;
 734         cksum->contents         = sig->signature.buffer;
 735 #endif
 736 }
 737
 738  krb5_error_code smb_krb5_verify_checksum(krb5_context context,
 739                                          krb5_keyblock *keyblock,
 740                                          krb5_keyusage usage,
 741                                          krb5_checksum *cksum,
 742                                          uint8 *data,
 743                                          size_t length)
 744 {
 745         krb5_error_code ret;
 746
 747         /* verify the checksum */
 748
 749         /* welcome to the wonderful world of samba's kerberos abstraction layer:
 750          *
 751          * function                     heimdal 0.6.1rc3        heimdal 0.7     MIT krb 1.4.2
 752          * -----------------------------------------------------------------------------
 753          * krb5_c_verify_checksum       -                       works           works
 754          * krb5_verify_checksum         works (6 args)          works (6 args)  broken (7 args)
 755          */
 756
 757 #if defined(HAVE_KRB5_C_VERIFY_CHECKSUM)
 758         {
 759                 krb5_boolean checksum_valid = False;
 760                 krb5_data input;
 761
 762                 input.data = (char *)data;
 763                 input.length = length;
 764
 765                 ret = krb5_c_verify_checksum(context,
 766                                              keyblock,
 767                                              usage,
 768                                              &input,
 769                                              cksum,
 770                                              &checksum_valid);
 771                 if (ret) {
 772                         DEBUG(3,("smb_krb5_verify_checksum: krb5_c_verify_checksum() failed: %s\n",
 773                                 error_message(ret)));
 774                         return ret;
 775                 }
 776
 777                 if (!checksum_valid)
 778                         ret = KRB5KRB_AP_ERR_BAD_INTEGRITY;
 779         }
 780
 781 #elif KRB5_VERIFY_CHECKSUM_ARGS == 6 && defined(HAVE_KRB5_CRYPTO_INIT) && defined(HAVE_KRB5_CRYPTO) && defined(HAVE_KRB5_CRYPTO_DESTROY)
 782
 783         /* Warning: MIT's krb5_verify_checksum cannot be used as it will use a key
 784          * without enctype and it ignores any key_usage types - Guenther */
 785
 786         {
 787
 788                 krb5_crypto crypto;
 789                 ret = krb5_crypto_init(context,
 790                                        keyblock,
 791                                        0,
 792                                        &crypto);
 793                 if (ret) {
 794                         DEBUG(0,("smb_krb5_verify_checksum: krb5_crypto_init() failed: %s\n",
 795                                 error_message(ret)));
 796                         return ret;
 797                 }
 798
 799                 ret = krb5_verify_checksum(context,
 800                                            crypto,
 801                                            usage,
 802                                            data,
 803                                            length,
 804                                            cksum);
 805
 806                 krb5_crypto_destroy(context, crypto);
 807         }
 808
 809 #else
 810 #error UNKNOWN_KRB5_VERIFY_CHECKSUM_FUNCTION
 811 #endif
 812
 813         return ret;
 814 }
 815
 816  time_t get_authtime_from_tkt(krb5_ticket *tkt)
 817 {
 818 #if defined(HAVE_KRB5_TKT_ENC_PART2)
 819         return tkt->enc_part2->times.authtime;
 820 #else
 821         return tkt->ticket.authtime;
 822 #endif
 823 }
 824
 825 static int get_kvno_from_ap_req(krb5_ap_req *ap_req)
 826 {
 827 #ifdef HAVE_TICKET_POINTER_IN_KRB5_AP_REQ /* MIT */
 828         if (ap_req->ticket->enc_part.kvno)
 829                 return ap_req->ticket->enc_part.kvno;
 830 #else /* Heimdal */
 831         if (ap_req->ticket.enc_part.kvno)
 832                 return *ap_req->ticket.enc_part.kvno;
 833 #endif
 834         return 0;
 835 }
 836
 837 static krb5_enctype get_enctype_from_ap_req(krb5_ap_req *ap_req)
 838 {
 839 #ifdef HAVE_ETYPE_IN_ENCRYPTEDDATA /* Heimdal */
 840         return ap_req->ticket.enc_part.etype;
 841 #else /* MIT */
 842         return ap_req->ticket->enc_part.enctype;
 843 #endif
 844 }
 845
 846 static krb5_error_code
 847 get_key_from_keytab(krb5_context context,
 848                     krb5_const_principal server,
 849                     krb5_enctype enctype,
 850                     krb5_kvno kvno,
 851                     krb5_keyblock **out_key)
 852 {
 853         krb5_keytab_entry entry;
 854         krb5_error_code ret;
 855         krb5_keytab keytab;
 856         char *name = NULL;
 857
 858         /* We have to open a new keytab handle here, as MIT does
 859            an implicit open/getnext/close on krb5_kt_get_entry. We
 860            may be in the middle of a keytab enumeration when this is
 861            called. JRA. */
 862
 863         ret = krb5_kt_default(context, &keytab);
 864         if (ret) {
 865                 DEBUG(0,("get_key_from_keytab: failed to open keytab: %s\n", error_message(ret)));
 866                 return ret;
 867         }
 868
 869         if ( DEBUGLEVEL >= 10 ) {
 870                 if (smb_krb5_unparse_name(context, server, &name) == 0) {
 871                         DEBUG(10,("get_key_from_keytab: will look for kvno %d, enctype %d and name: %s\n",
 872                                 kvno, enctype, name));
 873                         SAFE_FREE(name);
 874                 }
 875         }
 876
 877         ret = krb5_kt_get_entry(context,
 878                                 keytab,
 879                                 server,
 880                                 kvno,
 881                                 enctype,
 882                                 &entry);
 883
 884         if (ret) {
 885                 DEBUG(0,("get_key_from_keytab: failed to retrieve key: %s\n", error_message(ret)));
 886                 goto out;
 887         }
 888
 889 #ifdef HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK /* Heimdal */
 890         ret = krb5_copy_keyblock(context, &entry.keyblock, out_key);
 891 #elif defined(HAVE_KRB5_KEYTAB_ENTRY_KEY) /* MIT */
 892         ret = krb5_copy_keyblock(context, &entry.key, out_key);
 893 #else
 894 #error UNKNOWN_KRB5_KEYTAB_ENTRY_FORMAT
 895 #endif
 896
 897         if (ret) {
 898                 DEBUG(0,("get_key_from_keytab: failed to copy key: %s\n", error_message(ret)));
 899                 goto out;
 900         }
 901
 902         smb_krb5_kt_free_entry(context, &entry);
 903
 904 out:
 905         krb5_kt_close(context, keytab);
 906         return ret;
 907 }
 908
 909  void smb_krb5_free_ap_req(krb5_context context,
 910                           krb5_ap_req *ap_req)
 911 {
 912 #ifdef HAVE_KRB5_FREE_AP_REQ /* MIT */
 913         krb5_free_ap_req(context, ap_req);
 914 #elif defined(HAVE_FREE_AP_REQ) /* Heimdal */
 915         free_AP_REQ(ap_req);
 916 #else
 917 #error UNKNOWN_KRB5_AP_REQ_FREE_FUNCTION
 918 #endif
 919 }
 920
 921 /* Prototypes */
 922 #if defined(HAVE_DECODE_KRB5_AP_REQ) /* MIT */
 923 krb5_error_code decode_krb5_ap_req(const krb5_data *code, krb5_ap_req **rep);
 924 #endif
 925
 926  krb5_error_code smb_krb5_get_keyinfo_from_ap_req(krb5_context context,
 927                                                  const krb5_data *inbuf,
 928                                                  krb5_kvno *kvno,
 929                                                  krb5_enctype *enctype)
 930 {
 931         krb5_error_code ret;
 932 #ifdef HAVE_KRB5_DECODE_AP_REQ /* Heimdal */
 933         {
 934                 krb5_ap_req ap_req;
 935
 936                 ret = krb5_decode_ap_req(context, inbuf, &ap_req);
 937                 if (ret)
 938                         return ret;
 939
 940                 *kvno = get_kvno_from_ap_req(&ap_req);
 941                 *enctype = get_enctype_from_ap_req(&ap_req);
 942
 943                 smb_krb5_free_ap_req(context, &ap_req);
 944         }
 945 #elif defined(HAVE_DECODE_KRB5_AP_REQ) /* MIT */
 946         {
 947                 krb5_ap_req *ap_req = NULL;
 948
 949                 ret = decode_krb5_ap_req(inbuf, &ap_req);
 950                 if (ret)
 951                         return ret;
 952
 953                 *kvno = get_kvno_from_ap_req(ap_req);
 954                 *enctype = get_enctype_from_ap_req(ap_req);
 955
 956                 smb_krb5_free_ap_req(context, ap_req);
 957         }
 958 #else
 959 #error UNKNOWN_KRB5_AP_REQ_DECODING_FUNCTION
 960 #endif
 961         return ret;
 962 }
 963
 964  krb5_error_code krb5_rd_req_return_keyblock_from_keytab(krb5_context context,
 965                                                         krb5_auth_context *auth_context,
 966                                                         const krb5_data *inbuf,
 967                                                         krb5_const_principal server,
 968                                                         krb5_keytab keytab,
 969                                                         krb5_flags *ap_req_options,
 970                                                         krb5_ticket **ticket,
 971                                                         krb5_keyblock **keyblock)
 972 {
 973         krb5_error_code ret;
 974         krb5_kvno kvno;
 975         krb5_enctype enctype;
 976         krb5_keyblock *local_keyblock;
 977
 978         ret = krb5_rd_req(context,
 979                           auth_context,
 980                           inbuf,
 981                           server,
 982                           keytab,
 983                           ap_req_options,
 984                           ticket);
 985         if (ret) {
 986                 return ret;
 987         }
 988
 989         ret = smb_krb5_get_keyinfo_from_ap_req(context, inbuf, &kvno, &enctype);
 990         if (ret) {
 991                 return ret;
 992         }
 993
 994         ret = get_key_from_keytab(context,
 995                                   server,
 996                                   enctype,
 997                                   kvno,
 998                                   &local_keyblock);
 999         if (ret) {
1000                 DEBUG(0,("krb5_rd_req_return_keyblock_from_keytab: failed to call get_key_from_keytab\n"));
1001                 goto out;
1002         }
1003
1004 out:
1005         if (ret && local_keyblock != NULL) {
1006                 krb5_free_keyblock(context, local_keyblock);
1007         } else {
1008                 *keyblock = local_keyblock;
1009         }
1010
1011         return ret;
1012 }
1013
1014  krb5_error_code smb_krb5_parse_name_norealm(krb5_context context,
1015                                             const char *name,
1016                                             krb5_principal *principal)
1017 {
1018 #ifdef HAVE_KRB5_PARSE_NAME_NOREALM
1019         return smb_krb5_parse_name_norealm_conv(context, name, principal);
1020 #endif
1021
1022         /* we are cheating here because parse_name will in fact set the realm.
1023          * We don't care as the only caller of smb_krb5_parse_name_norealm
1024          * ignores the realm anyway when calling
1025          * smb_krb5_principal_compare_any_realm later - Guenther */
1026
1027         return smb_krb5_parse_name(context, name, principal);
1028 }
1029
1030  BOOL smb_krb5_principal_compare_any_realm(krb5_context context,
1031                                           krb5_const_principal princ1,
1032                                           krb5_const_principal princ2)
1033 {
1034 #ifdef HAVE_KRB5_PRINCIPAL_COMPARE_ANY_REALM
1035
1036         return krb5_principal_compare_any_realm(context, princ1, princ2);
1037
1038 /* krb5_princ_size is a macro in MIT */
1039 #elif defined(HAVE_KRB5_PRINC_SIZE) || defined(krb5_princ_size)
1040
1041         int i, len1, len2;
1042         const krb5_data *p1, *p2;
1043
1044         len1 = krb5_princ_size(context, princ1);
1045         len2 = krb5_princ_size(context, princ2);
1046
1047         if (len1 != len2)
1048                 return False;
1049
1050         for (i = 0; i < len1; i++) {
1051
1052                 p1 = krb5_princ_component(context, CONST_DISCARD(krb5_principal, princ1), i);
1053                 p2 = krb5_princ_component(context, CONST_DISCARD(krb5_principal, princ2), i);
1054
1055                 if (p1->length != p2->length || memcmp(p1->data, p2->data, p1->length))
1056                         return False;
1057         }
1058
1059         return True;
1060 #else
1061 #error NO_SUITABLE_PRINCIPAL_COMPARE_FUNCTION
1062 #endif
1063 }
1064
1065  krb5_error_code smb_krb5_renew_ticket(const char *ccache_string,       /* FILE:/tmp/krb5cc_0 */
1066                                        const char *client_string,       /* gd@BER.SUSE.DE */
1067                                        const char *service_string,      /* krbtgt/BER.SUSE.DE@BER.SUSE.DE */
1068                                        time_t *new_start_time)
1069 {
1070         krb5_error_code ret;
1071         krb5_context context = NULL;
1072         krb5_ccache ccache = NULL;
1073         krb5_principal client = NULL;
1074
1075         initialize_krb5_error_table();
1076         ret = krb5_init_context(&context);
1077         if (ret) {
1078                 goto done;
1079         }
1080
1081         if (!ccache_string) {
1082                 ccache_string = krb5_cc_default_name(context);
1083         }
1084
1085         DEBUG(10,("smb_krb5_renew_ticket: using %s as ccache\n", ccache_string));
1086
1087         /* FIXME: we should not fall back to defaults */
1088         ret = krb5_cc_resolve(context, CONST_DISCARD(char *, ccache_string), &ccache);
1089         if (ret) {
1090                 goto done;
1091         }
1092
1093 #ifdef HAVE_KRB5_GET_RENEWED_CREDS      /* MIT */
1094         {
1095                 krb5_creds creds;
1096
1097                 if (client_string) {
1098                         ret = smb_krb5_parse_name(context, client_string, &client);
1099                         if (ret) {
1100                                 goto done;
1101                         }
1102                 } else {
1103                         ret = krb5_cc_get_principal(context, ccache, &client);
1104                         if (ret) {
1105                                 goto done;
1106                         }
1107                 }
1108
1109                 ret = krb5_get_renewed_creds(context, &creds, client, ccache, CONST_DISCARD(char *, service_string));
1110                 if (ret) {
1111                         DEBUG(10,("smb_krb5_renew_ticket: krb5_get_kdc_cred failed: %s\n", error_message(ret)));
1112                         goto done;
1113                 }
1114
1115                 /* hm, doesn't that create a new one if the old one wasn't there? - Guenther */
1116                 ret = krb5_cc_initialize(context, ccache, client);
1117                 if (ret) {
1118                         goto done;
1119                 }
1120
1121                 ret = krb5_cc_store_cred(context, ccache, &creds);
1122
1123                 if (new_start_time) {
1124                         *new_start_time = (time_t) creds.times.renew_till;
1125                 }
1126
1127                 krb5_free_cred_contents(context, &creds);
1128         }
1129 #elif defined(HAVE_KRB5_GET_KDC_CRED)   /* Heimdal */
1130         {
1131                 krb5_kdc_flags flags;
1132                 krb5_creds creds_in;
1133                 krb5_realm *client_realm;
1134                 krb5_creds *creds;
1135
1136                 memset(&creds_in, 0, sizeof(creds_in));
1137
1138                 if (client_string) {
1139                         ret = smb_krb5_parse_name(context, client_string, &creds_in.client);
1140                         if (ret) {
1141                                 goto done;
1142                         }
1143                 } else {
1144                         ret = krb5_cc_get_principal(context, ccache, &creds_in.client);
1145                         if (ret) {
1146                                 goto done;
1147                         }
1148                 }
1149
1150                 if (service_string) {
1151                         ret = smb_krb5_parse_name(context, service_string, &creds_in.server);
1152                         if (ret) {
1153                                 goto done;
1154                         }
1155                 } else {
1156                         /* build tgt service by default */
1157                         client_realm = krb5_princ_realm(context, client);
1158                         ret = krb5_make_principal(context, &creds_in.server, *client_realm, KRB5_TGS_NAME, *client_realm, NULL);
1159                         if (ret) {
1160                                 goto done;
1161                         }
1162                 }
1163
1164                 flags.i = 0;
1165                 flags.b.renewable = flags.b.renew = True;
1166
1167                 ret = krb5_get_kdc_cred(context, ccache, flags, NULL, NULL, &creds_in, &creds);
1168                 if (ret) {
1169                         DEBUG(10,("smb_krb5_renew_ticket: krb5_get_kdc_cred failed: %s\n", error_message(ret)));
1170                         goto done;
1171                 }
1172
1173                 /* hm, doesn't that create a new one if the old one wasn't there? - Guenther */
1174                 ret = krb5_cc_initialize(context, ccache, creds_in.client);
1175                 if (ret) {
1176                         goto done;
1177                 }
1178
1179                 ret = krb5_cc_store_cred(context, ccache, creds);
1180
1181                 if (new_start_time) {
1182                         *new_start_time = (time_t) creds->times.renew_till;
1183                 }
1184
1185                 krb5_free_cred_contents(context, &creds_in);
1186                 krb5_free_creds(context, creds);
1187         }
1188 #else
1189 #error No suitable krb5 ticket renew function available
1190 #endif
1191
1192
1193 done:
1194         if (client) {
1195                 krb5_free_principal(context, client);
1196         }
1197         if (context) {
1198                 krb5_free_context(context);
1199         }
1200         if (ccache) {
1201                 krb5_cc_close(context, ccache);
1202         }
1203
1204         return ret;
1205
1206 }
1207
1208  krb5_error_code smb_krb5_free_addresses(krb5_context context, smb_krb5_addresses *addr)
1209 {
1210         krb5_error_code ret = 0;
1211         if (addr == NULL) {
1212                 return ret;
1213         }
1214 #if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
1215         krb5_free_addresses(context, addr->addrs);
1216 #elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
1217         ret = krb5_free_addresses(context, addr->addrs);
1218         SAFE_FREE(addr->addrs);
1219 #endif
1220         SAFE_FREE(addr);
1221         addr = NULL;
1222         return ret;
1223 }
1224
1225  krb5_error_code smb_krb5_gen_netbios_krb5_address(smb_krb5_addresses **kerb_addr)
1226 {
1227         krb5_error_code ret = 0;
1228         nstring buf;
1229 #if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
1230         krb5_address **addrs = NULL;
1231 #elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
1232         krb5_addresses *addrs = NULL;
1233 #endif
1234
1235         *kerb_addr = (smb_krb5_addresses *)SMB_MALLOC(sizeof(smb_krb5_addresses));
1236         if (*kerb_addr == NULL) {
1237                 return ENOMEM;
1238         }
1239
1240         put_name(buf, global_myname(), ' ', 0x20);
1241
1242 #if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
1243         {
1244                 int num_addr = 2;
1245
1246                 addrs = (krb5_address **)SMB_MALLOC(sizeof(krb5_address *) * num_addr);
1247                 if (addrs == NULL) {
1248                         SAFE_FREE(kerb_addr);
1249                         return ENOMEM;
1250                 }
1251
1252                 memset(addrs, 0, sizeof(krb5_address *) * num_addr);
1253
1254                 addrs[0] = (krb5_address *)SMB_MALLOC(sizeof(krb5_address));
1255                 if (addrs[0] == NULL) {
1256                         SAFE_FREE(addrs);
1257                         SAFE_FREE(kerb_addr);
1258                         return ENOMEM;
1259                 }
1260
1261                 addrs[0]->magic = KV5M_ADDRESS;
1262                 addrs[0]->addrtype = KRB5_ADDR_NETBIOS;
1263                 addrs[0]->length = MAX_NETBIOSNAME_LEN;
1264                 addrs[0]->contents = (unsigned char *)SMB_MALLOC(addrs[0]->length);
1265                 if (addrs[0]->contents == NULL) {
1266                         SAFE_FREE(addrs[0]);
1267                         SAFE_FREE(addrs);
1268                         SAFE_FREE(kerb_addr);
1269                         return ENOMEM;
1270                 }
1271
1272                 memcpy(addrs[0]->contents, buf, addrs[0]->length);
1273
1274                 addrs[1] = NULL;
1275         }
1276 #elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
1277         {
1278                 addrs = (krb5_addresses *)SMB_MALLOC(sizeof(krb5_addresses));
1279                 if (addrs == NULL) {
1280                         SAFE_FREE(kerb_addr);
1281                         return ENOMEM;
1282                 }
1283
1284                 memset(addrs, 0, sizeof(krb5_addresses));
1285
1286                 addrs->len = 1;
1287                 addrs->val = (krb5_address *)SMB_MALLOC(sizeof(krb5_address));
1288                 if (addrs->val == NULL) {
1289                         SAFE_FREE(addrs);
1290                         SAFE_FREE(kerb_addr);
1291                         return ENOMEM;
1292                 }
1293
1294                 addrs->val[0].addr_type = KRB5_ADDR_NETBIOS;
1295                 addrs->val[0].address.length = MAX_NETBIOSNAME_LEN;
1296                 addrs->val[0].address.data = (unsigned char *)SMB_MALLOC(addrs->val[0].address.length);
1297                 if (addrs->val[0].address.data == NULL) {
1298                         SAFE_FREE(addrs->val);
1299                         SAFE_FREE(addrs);
1300                         SAFE_FREE(kerb_addr);
1301                         return ENOMEM;
1302                 }
1303
1304                 memcpy(addrs->val[0].address.data, buf, addrs->val[0].address.length);
1305         }
1306 #else
1307 #error UNKNOWN_KRB5_ADDRESS_FORMAT
1308 #endif
1309         (*kerb_addr)->addrs = addrs;
1310
1311         return ret;
1312 }
1313
1314  void smb_krb5_free_error(krb5_context context, krb5_error *krberror)
1315 {
1316 #ifdef HAVE_KRB5_FREE_ERROR_CONTENTS /* Heimdal */
1317         krb5_free_error_contents(context, krberror);
1318 #else /* MIT */
1319         krb5_free_error(context, krberror);
1320 #endif
1321 }
1322
1323  krb5_error_code handle_krberror_packet(krb5_context context,
1324                                         krb5_data *packet)
1325 {
1326         krb5_error_code ret;
1327         BOOL got_error_code = False;
1328
1329         DEBUG(10,("handle_krberror_packet: got error packet\n"));
1330
1331 #ifdef HAVE_E_DATA_POINTER_IN_KRB5_ERROR /* Heimdal */
1332         {
1333                 krb5_error krberror;
1334
1335                 if ((ret = krb5_rd_error(context, packet, &krberror))) {
1336                         DEBUG(10,("handle_krberror_packet: krb5_rd_error failed with: %s\n",
1337                                 error_message(ret)));
1338                         return ret;
1339                 }
1340
1341                 if (krberror.e_data == NULL || krberror.e_data->data == NULL) {
1342                         ret = (krb5_error_code) krberror.error_code;
1343                         got_error_code = True;
1344                 }
1345
1346                 smb_krb5_free_error(context, &krberror);
1347         }
1348 #else /* MIT */
1349         {
1350                 krb5_error *krberror;
1351
1352                 if ((ret = krb5_rd_error(context, packet, &krberror))) {
1353                         DEBUG(10,("handle_krberror_packet: krb5_rd_error failed with: %s\n",
1354                                 error_message(ret)));
1355                         return ret;
1356                 }
1357
1358                 if (krberror->e_data.data == NULL) {
1359                         ret = ERROR_TABLE_BASE_krb5 + (krb5_error_code) krberror->error;
1360                         got_error_code = True;
1361                 }
1362                 smb_krb5_free_error(context, krberror);
1363         }
1364 #endif
1365         if (got_error_code) {
1366                 DEBUG(5,("handle_krberror_packet: got KERBERR from kpasswd: %s (%d)\n",
1367                         error_message(ret), ret));
1368         }
1369         return ret;
1370 }
1371
1372 #else /* HAVE_KRB5 */
1373  /* this saves a few linking headaches */
1374  int cli_krb5_get_ticket(const char *principal, time_t time_offset,
1375                         DATA_BLOB *ticket, DATA_BLOB *session_key_krb5, uint32 extra_ap_opts,
1376                         const char *ccname)
1377 {
1378          DEBUG(0,("NO KERBEROS SUPPORT\n"));
1379          return 1;
1380 }
1381
1382 #endif