1/* 2 * Copyright (c) 1997 - 2002 Kungliga Tekniska H�gskolan 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 36RCSID("$Id: get_in_tkt.c 20226 2007-02-16 03:31:50Z lha $"); 37 38krb5_error_code KRB5_LIB_FUNCTION 39krb5_init_etype (krb5_context context, 40 unsigned *len, 41 krb5_enctype **val, 42 const krb5_enctype *etypes) 43{ 44 int i; 45 krb5_error_code ret; 46 krb5_enctype *tmp = NULL; 47 48 ret = 0; 49 if (etypes == NULL) { 50 ret = krb5_get_default_in_tkt_etypes(context, 51 &tmp); 52 if (ret) 53 return ret; 54 etypes = tmp; 55 } 56 57 for (i = 0; etypes[i]; ++i) 58 ; 59 *len = i; 60 *val = malloc(i * sizeof(**val)); 61 if (i != 0 && *val == NULL) { 62 ret = ENOMEM; 63 krb5_set_error_string(context, "malloc: out of memory"); 64 goto cleanup; 65 } 66 memmove (*val, 67 etypes, 68 i * sizeof(*tmp)); 69cleanup: 70 if (tmp != NULL) 71 free (tmp); 72 return ret; 73} 74 75 76static krb5_error_code 77decrypt_tkt (krb5_context context, 78 krb5_keyblock *key, 79 krb5_key_usage usage, 80 krb5_const_pointer decrypt_arg, 81 krb5_kdc_rep *dec_rep) 82{ 83 krb5_error_code ret; 84 krb5_data data; 85 size_t size; 86 krb5_crypto crypto; 87 88 ret = krb5_crypto_init(context, key, 0, &crypto); 89 if (ret) 90 return ret; 91 92 ret = krb5_decrypt_EncryptedData (context, 93 crypto, 94 usage, 95 &dec_rep->kdc_rep.enc_part, 96 &data); 97 krb5_crypto_destroy(context, crypto); 98 99 if (ret) 100 return ret; 101 102 ret = krb5_decode_EncASRepPart(context, 103 data.data, 104 data.length, 105 &dec_rep->enc_part, 106 &size); 107 if (ret) 108 ret = krb5_decode_EncTGSRepPart(context, 109 data.data, 110 data.length, 111 &dec_rep->enc_part, 112 &size); 113 krb5_data_free (&data); 114 if (ret) 115 return ret; 116 return 0; 117} 118 119int 120_krb5_extract_ticket(krb5_context context, 121 krb5_kdc_rep *rep, 122 krb5_creds *creds, 123 krb5_keyblock *key, 124 krb5_const_pointer keyseed, 125 krb5_key_usage key_usage, 126 krb5_addresses *addrs, 127 unsigned nonce, 128 unsigned flags, 129 krb5_decrypt_proc decrypt_proc, 130 krb5_const_pointer decryptarg) 131{ 132 krb5_error_code ret; 133 krb5_principal tmp_principal; 134 int tmp; 135 size_t len; 136 time_t tmp_time; 137 krb5_timestamp sec_now; 138 139 ret = _krb5_principalname2krb5_principal (context, 140 &tmp_principal, 141 rep->kdc_rep.cname, 142 rep->kdc_rep.crealm); 143 if (ret) 144 goto out; 145 146 /* compare client */ 147 148 if((flags & EXTRACT_TICKET_ALLOW_CNAME_MISMATCH) == 0){ 149 tmp = krb5_principal_compare (context, tmp_principal, creds->client); 150 if (!tmp) { 151 krb5_free_principal (context, tmp_principal); 152 krb5_clear_error_string (context); 153 ret = KRB5KRB_AP_ERR_MODIFIED; 154 goto out; 155 } 156 } 157 158 krb5_free_principal (context, creds->client); 159 creds->client = tmp_principal; 160 161 /* extract ticket */ 162 ASN1_MALLOC_ENCODE(Ticket, creds->ticket.data, creds->ticket.length, 163 &rep->kdc_rep.ticket, &len, ret); 164 if(ret) 165 goto out; 166 if (creds->ticket.length != len) 167 krb5_abortx(context, "internal error in ASN.1 encoder"); 168 creds->second_ticket.length = 0; 169 creds->second_ticket.data = NULL; 170 171 /* compare server */ 172 173 ret = _krb5_principalname2krb5_principal (context, 174 &tmp_principal, 175 rep->kdc_rep.ticket.sname, 176 rep->kdc_rep.ticket.realm); 177 if (ret) 178 goto out; 179 if(flags & EXTRACT_TICKET_ALLOW_SERVER_MISMATCH){ 180 krb5_free_principal(context, creds->server); 181 creds->server = tmp_principal; 182 tmp_principal = NULL; 183 } else { 184 tmp = krb5_principal_compare (context, tmp_principal, 185 creds->server); 186 krb5_free_principal (context, tmp_principal); 187 if (!tmp) { 188 ret = KRB5KRB_AP_ERR_MODIFIED; 189 krb5_clear_error_string (context); 190 goto out; 191 } 192 } 193 194 /* decrypt */ 195 196 if (decrypt_proc == NULL) 197 decrypt_proc = decrypt_tkt; 198 199 ret = (*decrypt_proc)(context, key, key_usage, decryptarg, rep); 200 if (ret) 201 goto out; 202 203 /* verify names */ 204 if(flags & EXTRACT_TICKET_MATCH_REALM){ 205 const char *srealm = krb5_principal_get_realm(context, creds->server); 206 const char *crealm = krb5_principal_get_realm(context, creds->client); 207 208 if (strcmp(rep->enc_part.srealm, srealm) != 0 || 209 strcmp(rep->enc_part.srealm, crealm) != 0) 210 { 211 ret = KRB5KRB_AP_ERR_MODIFIED; 212 krb5_clear_error_string(context); 213 goto out; 214 } 215 } 216 217 /* compare nonces */ 218 219 if (nonce != rep->enc_part.nonce) { 220 ret = KRB5KRB_AP_ERR_MODIFIED; 221 krb5_set_error_string(context, "malloc: out of memory"); 222 goto out; 223 } 224 225 /* set kdc-offset */ 226 227 krb5_timeofday (context, &sec_now); 228 if (rep->enc_part.flags.initial 229 && context->kdc_sec_offset == 0 230 && krb5_config_get_bool (context, NULL, 231 "libdefaults", 232 "kdc_timesync", 233 NULL)) { 234 context->kdc_sec_offset = rep->enc_part.authtime - sec_now; 235 krb5_timeofday (context, &sec_now); 236 } 237 238 /* check all times */ 239 240 if (rep->enc_part.starttime) { 241 tmp_time = *rep->enc_part.starttime; 242 } else 243 tmp_time = rep->enc_part.authtime; 244 245 if (creds->times.starttime == 0 246 && abs(tmp_time - sec_now) > context->max_skew) { 247 ret = KRB5KRB_AP_ERR_SKEW; 248 krb5_set_error_string (context, 249 "time skew (%d) larger than max (%d)", 250 abs(tmp_time - sec_now), 251 (int)context->max_skew); 252 goto out; 253 } 254 255 if (creds->times.starttime != 0 256 && tmp_time != creds->times.starttime) { 257 krb5_clear_error_string (context); 258 ret = KRB5KRB_AP_ERR_MODIFIED; 259 goto out; 260 } 261 262 creds->times.starttime = tmp_time; 263 264 if (rep->enc_part.renew_till) { 265 tmp_time = *rep->enc_part.renew_till; 266 } else 267 tmp_time = 0; 268 269 if (creds->times.renew_till != 0 270 && tmp_time > creds->times.renew_till) { 271 krb5_clear_error_string (context); 272 ret = KRB5KRB_AP_ERR_MODIFIED; 273 goto out; 274 } 275 276 creds->times.renew_till = tmp_time; 277 278 creds->times.authtime = rep->enc_part.authtime; 279 280 if (creds->times.endtime != 0 281 && rep->enc_part.endtime > creds->times.endtime) { 282 krb5_clear_error_string (context); 283 ret = KRB5KRB_AP_ERR_MODIFIED; 284 goto out; 285 } 286 287 creds->times.endtime = rep->enc_part.endtime; 288 289 if(rep->enc_part.caddr) 290 krb5_copy_addresses (context, rep->enc_part.caddr, &creds->addresses); 291 else if(addrs) 292 krb5_copy_addresses (context, addrs, &creds->addresses); 293 else { 294 creds->addresses.len = 0; 295 creds->addresses.val = NULL; 296 } 297 creds->flags.b = rep->enc_part.flags; 298 299 creds->authdata.len = 0; 300 creds->authdata.val = NULL; 301 creds->session.keyvalue.length = 0; 302 creds->session.keyvalue.data = NULL; 303 creds->session.keytype = rep->enc_part.key.keytype; 304 ret = krb5_data_copy (&creds->session.keyvalue, 305 rep->enc_part.key.keyvalue.data, 306 rep->enc_part.key.keyvalue.length); 307 308out: 309 memset (rep->enc_part.key.keyvalue.data, 0, 310 rep->enc_part.key.keyvalue.length); 311 return ret; 312} 313 314 315static krb5_error_code 316make_pa_enc_timestamp(krb5_context context, PA_DATA *pa, 317 krb5_enctype etype, krb5_keyblock *key) 318{ 319 PA_ENC_TS_ENC p; 320 unsigned char *buf; 321 size_t buf_size; 322 size_t len; 323 EncryptedData encdata; 324 krb5_error_code ret; 325 int32_t usec; 326 int usec2; 327 krb5_crypto crypto; 328 329 krb5_us_timeofday (context, &p.patimestamp, &usec); 330 usec2 = usec; 331 p.pausec = &usec2; 332 333 ASN1_MALLOC_ENCODE(PA_ENC_TS_ENC, buf, buf_size, &p, &len, ret); 334 if (ret) 335 return ret; 336 if(buf_size != len) 337 krb5_abortx(context, "internal error in ASN.1 encoder"); 338 ret = krb5_crypto_init(context, key, 0, &crypto); 339 if (ret) { 340 free(buf); 341 return ret; 342 } 343 ret = krb5_encrypt_EncryptedData(context, 344 crypto, 345 KRB5_KU_PA_ENC_TIMESTAMP, 346 buf, 347 len, 348 0, 349 &encdata); 350 free(buf); 351 krb5_crypto_destroy(context, crypto); 352 if (ret) 353 return ret; 354 355 ASN1_MALLOC_ENCODE(EncryptedData, buf, buf_size, &encdata, &len, ret); 356 free_EncryptedData(&encdata); 357 if (ret) 358 return ret; 359 if(buf_size != len) 360 krb5_abortx(context, "internal error in ASN.1 encoder"); 361 pa->padata_type = KRB5_PADATA_ENC_TIMESTAMP; 362 pa->padata_value.length = len; 363 pa->padata_value.data = buf; 364 return 0; 365} 366 367static krb5_error_code 368add_padata(krb5_context context, 369 METHOD_DATA *md, 370 krb5_principal client, 371 krb5_key_proc key_proc, 372 krb5_const_pointer keyseed, 373 krb5_enctype *enctypes, 374 unsigned netypes, 375 krb5_salt *salt) 376{ 377 krb5_error_code ret; 378 PA_DATA *pa2; 379 krb5_salt salt2; 380 krb5_enctype *ep; 381 int i; 382 383 if(salt == NULL) { 384 /* default to standard salt */ 385 ret = krb5_get_pw_salt (context, client, &salt2); 386 salt = &salt2; 387 } 388 if (!enctypes) { 389 enctypes = context->etypes; 390 netypes = 0; 391 for (ep = enctypes; *ep != ETYPE_NULL; ep++) 392 netypes++; 393 } 394 pa2 = realloc (md->val, (md->len + netypes) * sizeof(*md->val)); 395 if (pa2 == NULL) { 396 krb5_set_error_string(context, "malloc: out of memory"); 397 return ENOMEM; 398 } 399 md->val = pa2; 400 401 for (i = 0; i < netypes; ++i) { 402 krb5_keyblock *key; 403 404 ret = (*key_proc)(context, enctypes[i], *salt, keyseed, &key); 405 if (ret) 406 continue; 407 ret = make_pa_enc_timestamp (context, &md->val[md->len], 408 enctypes[i], key); 409 krb5_free_keyblock (context, key); 410 if (ret) 411 return ret; 412 ++md->len; 413 } 414 if(salt == &salt2) 415 krb5_free_salt(context, salt2); 416 return 0; 417} 418 419static krb5_error_code 420init_as_req (krb5_context context, 421 KDCOptions opts, 422 krb5_creds *creds, 423 const krb5_addresses *addrs, 424 const krb5_enctype *etypes, 425 const krb5_preauthtype *ptypes, 426 const krb5_preauthdata *preauth, 427 krb5_key_proc key_proc, 428 krb5_const_pointer keyseed, 429 unsigned nonce, 430 AS_REQ *a) 431{ 432 krb5_error_code ret; 433 krb5_salt salt; 434 435 memset(a, 0, sizeof(*a)); 436 437 a->pvno = 5; 438 a->msg_type = krb_as_req; 439 a->req_body.kdc_options = opts; 440 a->req_body.cname = malloc(sizeof(*a->req_body.cname)); 441 if (a->req_body.cname == NULL) { 442 ret = ENOMEM; 443 krb5_set_error_string(context, "malloc: out of memory"); 444 goto fail; 445 } 446 a->req_body.sname = malloc(sizeof(*a->req_body.sname)); 447 if (a->req_body.sname == NULL) { 448 ret = ENOMEM; 449 krb5_set_error_string(context, "malloc: out of memory"); 450 goto fail; 451 } 452 ret = _krb5_principal2principalname (a->req_body.cname, creds->client); 453 if (ret) 454 goto fail; 455 ret = _krb5_principal2principalname (a->req_body.sname, creds->server); 456 if (ret) 457 goto fail; 458 ret = copy_Realm(&creds->client->realm, &a->req_body.realm); 459 if (ret) 460 goto fail; 461 462 if(creds->times.starttime) { 463 a->req_body.from = malloc(sizeof(*a->req_body.from)); 464 if (a->req_body.from == NULL) { 465 ret = ENOMEM; 466 krb5_set_error_string(context, "malloc: out of memory"); 467 goto fail; 468 } 469 *a->req_body.from = creds->times.starttime; 470 } 471 if(creds->times.endtime){ 472 ALLOC(a->req_body.till, 1); 473 *a->req_body.till = creds->times.endtime; 474 } 475 if(creds->times.renew_till){ 476 a->req_body.rtime = malloc(sizeof(*a->req_body.rtime)); 477 if (a->req_body.rtime == NULL) { 478 ret = ENOMEM; 479 krb5_set_error_string(context, "malloc: out of memory"); 480 goto fail; 481 } 482 *a->req_body.rtime = creds->times.renew_till; 483 } 484 a->req_body.nonce = nonce; 485 ret = krb5_init_etype (context, 486 &a->req_body.etype.len, 487 &a->req_body.etype.val, 488 etypes); 489 if (ret) 490 goto fail; 491 492 /* 493 * This means no addresses 494 */ 495 496 if (addrs && addrs->len == 0) { 497 a->req_body.addresses = NULL; 498 } else { 499 a->req_body.addresses = malloc(sizeof(*a->req_body.addresses)); 500 if (a->req_body.addresses == NULL) { 501 ret = ENOMEM; 502 krb5_set_error_string(context, "malloc: out of memory"); 503 goto fail; 504 } 505 506 if (addrs) 507 ret = krb5_copy_addresses(context, addrs, a->req_body.addresses); 508 else { 509 ret = krb5_get_all_client_addrs (context, a->req_body.addresses); 510 if(ret == 0 && a->req_body.addresses->len == 0) { 511 free(a->req_body.addresses); 512 a->req_body.addresses = NULL; 513 } 514 } 515 if (ret) 516 return ret; 517 } 518 519 a->req_body.enc_authorization_data = NULL; 520 a->req_body.additional_tickets = NULL; 521 522 if(preauth != NULL) { 523 int i; 524 ALLOC(a->padata, 1); 525 if(a->padata == NULL) { 526 ret = ENOMEM; 527 krb5_set_error_string(context, "malloc: out of memory"); 528 goto fail; 529 } 530 a->padata->val = NULL; 531 a->padata->len = 0; 532 for(i = 0; i < preauth->len; i++) { 533 if(preauth->val[i].type == KRB5_PADATA_ENC_TIMESTAMP){ 534 int j; 535 536 for(j = 0; j < preauth->val[i].info.len; j++) { 537 krb5_salt *sp = &salt; 538 if(preauth->val[i].info.val[j].salttype) 539 salt.salttype = *preauth->val[i].info.val[j].salttype; 540 else 541 salt.salttype = KRB5_PW_SALT; 542 if(preauth->val[i].info.val[j].salt) 543 salt.saltvalue = *preauth->val[i].info.val[j].salt; 544 else 545 if(salt.salttype == KRB5_PW_SALT) 546 sp = NULL; 547 else 548 krb5_data_zero(&salt.saltvalue); 549 ret = add_padata(context, a->padata, creds->client, 550 key_proc, keyseed, 551 &preauth->val[i].info.val[j].etype, 1, 552 sp); 553 if (ret == 0) 554 break; 555 } 556 } 557 } 558 } else 559 /* not sure this is the way to use `ptypes' */ 560 if (ptypes == NULL || *ptypes == KRB5_PADATA_NONE) 561 a->padata = NULL; 562 else if (*ptypes == KRB5_PADATA_ENC_TIMESTAMP) { 563 ALLOC(a->padata, 1); 564 if (a->padata == NULL) { 565 ret = ENOMEM; 566 krb5_set_error_string(context, "malloc: out of memory"); 567 goto fail; 568 } 569 a->padata->len = 0; 570 a->padata->val = NULL; 571 572 /* make a v5 salted pa-data */ 573 add_padata(context, a->padata, creds->client, 574 key_proc, keyseed, a->req_body.etype.val, 575 a->req_body.etype.len, NULL); 576 577 /* make a v4 salted pa-data */ 578 salt.salttype = KRB5_PW_SALT; 579 krb5_data_zero(&salt.saltvalue); 580 add_padata(context, a->padata, creds->client, 581 key_proc, keyseed, a->req_body.etype.val, 582 a->req_body.etype.len, &salt); 583 } else { 584 krb5_set_error_string (context, "pre-auth type %d not supported", 585 *ptypes); 586 ret = KRB5_PREAUTH_BAD_TYPE; 587 goto fail; 588 } 589 return 0; 590fail: 591 free_AS_REQ(a); 592 return ret; 593} 594 595static int 596set_ptypes(krb5_context context, 597 KRB_ERROR *error, 598 const krb5_preauthtype **ptypes, 599 krb5_preauthdata **preauth) 600{ 601 static krb5_preauthdata preauth2; 602 static krb5_preauthtype ptypes2[] = { KRB5_PADATA_ENC_TIMESTAMP, KRB5_PADATA_NONE }; 603 604 if(error->e_data) { 605 METHOD_DATA md; 606 int i; 607 decode_METHOD_DATA(error->e_data->data, 608 error->e_data->length, 609 &md, 610 NULL); 611 for(i = 0; i < md.len; i++){ 612 switch(md.val[i].padata_type){ 613 case KRB5_PADATA_ENC_TIMESTAMP: 614 *ptypes = ptypes2; 615 break; 616 case KRB5_PADATA_ETYPE_INFO: 617 *preauth = &preauth2; 618 ALLOC_SEQ(*preauth, 1); 619 (*preauth)->val[0].type = KRB5_PADATA_ENC_TIMESTAMP; 620 krb5_decode_ETYPE_INFO(context, 621 md.val[i].padata_value.data, 622 md.val[i].padata_value.length, 623 &(*preauth)->val[0].info, 624 NULL); 625 break; 626 default: 627 break; 628 } 629 } 630 free_METHOD_DATA(&md); 631 } else { 632 *ptypes = ptypes2; 633 } 634 return(1); 635} 636 637krb5_error_code KRB5_LIB_FUNCTION 638krb5_get_in_cred(krb5_context context, 639 krb5_flags options, 640 const krb5_addresses *addrs, 641 const krb5_enctype *etypes, 642 const krb5_preauthtype *ptypes, 643 const krb5_preauthdata *preauth, 644 krb5_key_proc key_proc, 645 krb5_const_pointer keyseed, 646 krb5_decrypt_proc decrypt_proc, 647 krb5_const_pointer decryptarg, 648 krb5_creds *creds, 649 krb5_kdc_rep *ret_as_reply) 650{ 651 krb5_error_code ret; 652 AS_REQ a; 653 krb5_kdc_rep rep; 654 krb5_data req, resp; 655 size_t len; 656 krb5_salt salt; 657 krb5_keyblock *key; 658 size_t size; 659 KDCOptions opts; 660 PA_DATA *pa; 661 krb5_enctype etype; 662 krb5_preauthdata *my_preauth = NULL; 663 unsigned nonce; 664 int done; 665 666 opts = int2KDCOptions(options); 667 668 krb5_generate_random_block (&nonce, sizeof(nonce)); 669 nonce &= 0xffffffff; 670 671 do { 672 done = 1; 673 ret = init_as_req (context, 674 opts, 675 creds, 676 addrs, 677 etypes, 678 ptypes, 679 preauth, 680 key_proc, 681 keyseed, 682 nonce, 683 &a); 684 if (my_preauth) { 685 free_ETYPE_INFO(&my_preauth->val[0].info); 686 free (my_preauth->val); 687 my_preauth = NULL; 688 } 689 if (ret) 690 return ret; 691 692 ASN1_MALLOC_ENCODE(AS_REQ, req.data, req.length, &a, &len, ret); 693 free_AS_REQ(&a); 694 if (ret) 695 return ret; 696 if(len != req.length) 697 krb5_abortx(context, "internal error in ASN.1 encoder"); 698 699 ret = krb5_sendto_kdc (context, &req, &creds->client->realm, &resp); 700 krb5_data_free(&req); 701 if (ret) 702 return ret; 703 704 memset (&rep, 0, sizeof(rep)); 705 ret = decode_AS_REP(resp.data, resp.length, &rep.kdc_rep, &size); 706 if(ret) { 707 /* let's try to parse it as a KRB-ERROR */ 708 KRB_ERROR error; 709 int ret2; 710 711 ret2 = krb5_rd_error(context, &resp, &error); 712 if(ret2 && resp.data && ((char*)resp.data)[0] == 4) 713 ret = KRB5KRB_AP_ERR_V4_REPLY; 714 krb5_data_free(&resp); 715 if (ret2 == 0) { 716 ret = krb5_error_from_rd_error(context, &error, creds); 717 /* if no preauth was set and KDC requires it, give it 718 one more try */ 719 if (!ptypes && !preauth 720 && ret == KRB5KDC_ERR_PREAUTH_REQUIRED 721#if 0 722 || ret == KRB5KDC_ERR_BADOPTION 723#endif 724 && set_ptypes(context, &error, &ptypes, &my_preauth)) { 725 done = 0; 726 preauth = my_preauth; 727 krb5_free_error_contents(context, &error); 728 krb5_clear_error_string(context); 729 continue; 730 } 731 if(ret_as_reply) 732 ret_as_reply->error = error; 733 else 734 free_KRB_ERROR (&error); 735 return ret; 736 } 737 return ret; 738 } 739 krb5_data_free(&resp); 740 } while(!done); 741 742 pa = NULL; 743 etype = rep.kdc_rep.enc_part.etype; 744 if(rep.kdc_rep.padata){ 745 int i = 0; 746 pa = krb5_find_padata(rep.kdc_rep.padata->val, rep.kdc_rep.padata->len, 747 KRB5_PADATA_PW_SALT, &i); 748 if(pa == NULL) { 749 i = 0; 750 pa = krb5_find_padata(rep.kdc_rep.padata->val, 751 rep.kdc_rep.padata->len, 752 KRB5_PADATA_AFS3_SALT, &i); 753 } 754 } 755 if(pa) { 756 salt.salttype = pa->padata_type; 757 salt.saltvalue = pa->padata_value; 758 759 ret = (*key_proc)(context, etype, salt, keyseed, &key); 760 } else { 761 /* make a v5 salted pa-data */ 762 ret = krb5_get_pw_salt (context, creds->client, &salt); 763 764 if (ret) 765 goto out; 766 ret = (*key_proc)(context, etype, salt, keyseed, &key); 767 krb5_free_salt(context, salt); 768 } 769 if (ret) 770 goto out; 771 772 { 773 unsigned flags = 0; 774 if (opts.request_anonymous) 775 flags |= EXTRACT_TICKET_ALLOW_SERVER_MISMATCH; 776 777 ret = _krb5_extract_ticket(context, 778 &rep, 779 creds, 780 key, 781 keyseed, 782 KRB5_KU_AS_REP_ENC_PART, 783 NULL, 784 nonce, 785 flags, 786 decrypt_proc, 787 decryptarg); 788 } 789 memset (key->keyvalue.data, 0, key->keyvalue.length); 790 krb5_free_keyblock_contents (context, key); 791 free (key); 792 793out: 794 if (ret == 0 && ret_as_reply) 795 *ret_as_reply = rep; 796 else 797 krb5_free_kdc_rep (context, &rep); 798 return ret; 799} 800 801krb5_error_code KRB5_LIB_FUNCTION 802krb5_get_in_tkt(krb5_context context, 803 krb5_flags options, 804 const krb5_addresses *addrs, 805 const krb5_enctype *etypes, 806 const krb5_preauthtype *ptypes, 807 krb5_key_proc key_proc, 808 krb5_const_pointer keyseed, 809 krb5_decrypt_proc decrypt_proc, 810 krb5_const_pointer decryptarg, 811 krb5_creds *creds, 812 krb5_ccache ccache, 813 krb5_kdc_rep *ret_as_reply) 814{ 815 krb5_error_code ret; 816 817 ret = krb5_get_in_cred (context, 818 options, 819 addrs, 820 etypes, 821 ptypes, 822 NULL, 823 key_proc, 824 keyseed, 825 decrypt_proc, 826 decryptarg, 827 creds, 828 ret_as_reply); 829 if(ret) 830 return ret; 831 if (ccache) 832 ret = krb5_cc_store_cred (context, ccache, creds); 833 return ret; 834} 835