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r19769: more compile fixes while merging from SAMBA_3_0 (not done yet)
[Samba.git] / source / libsmb / clikrb5.c
blob14b5285e45abaaaecc788b5c17073c6487dfab7c
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_TGS_KTYPES)
134
135 #if defined(HAVE_KRB5_SET_DEFAULT_TGS_ENCTYPES)
136
137 /* With MIT kerberos, we should use krb5_set_default_tgs_enctypes in preference
138 * to krb5_set_default_tgs_ktypes. See
139 * http://lists.samba.org/archive/samba-technical/2006-July/048271.html
140 *
141 * If the MIT libraries are not exporting internal symbols, we will end up in
142 * this branch, which is correct. Otherwise we will continue to use the
143 * internal symbol
144 */
145 krb5_error_code krb5_set_default_tgs_ktypes(krb5_context ctx, const krb5_enctype *enc)
146 {
147 return krb5_set_default_tgs_enctypes(ctx, enc);
148 }
149
150 #elif defined(HAVE_KRB5_SET_DEFAULT_IN_TKT_ETYPES)
151
152 /* Heimdal */
153 krb5_error_code krb5_set_default_tgs_ktypes(krb5_context ctx, const krb5_enctype *enc)
154 {
155 return krb5_set_default_in_tkt_etypes(ctx, enc);
156 }
157
158 #endif /* HAVE_KRB5_SET_DEFAULT_TGS_ENCTYPES */
159
160 #endif /* HAVE_KRB5_SET_DEFAULT_TGS_KTYPES */
161
162 #if defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS)
163 /* HEIMDAL */
164 void setup_kaddr( krb5_address *pkaddr, struct sockaddr *paddr)
165 {
166 pkaddr->addr_type = KRB5_ADDRESS_INET;
167 pkaddr->address.length = sizeof(((struct sockaddr_in *)paddr)->sin_addr);
168 pkaddr->address.data = (char *)&(((struct sockaddr_in *)paddr)->sin_addr);
169 }
170 #elif defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS)
171 /* MIT */
172 void setup_kaddr( krb5_address *pkaddr, struct sockaddr *paddr)
173 {
174 pkaddr->addrtype = ADDRTYPE_INET;
175 pkaddr->length = sizeof(((struct sockaddr_in *)paddr)->sin_addr);
176 pkaddr->contents = (krb5_octet *)&(((struct sockaddr_in *)paddr)->sin_addr);
177 }
178 #else
179 #error UNKNOWN_ADDRTYPE
180 #endif
181
182 #if defined(HAVE_KRB5_PRINCIPAL2SALT) && defined(HAVE_KRB5_USE_ENCTYPE) && defined(HAVE_KRB5_STRING_TO_KEY) && defined(HAVE_KRB5_ENCRYPT_BLOCK)
183 int create_kerberos_key_from_string_direct(krb5_context context,
184 krb5_principal host_princ,
185 krb5_data *password,
186 krb5_keyblock *key,
187 krb5_enctype enctype)
188 {
189 int ret;
190 krb5_data salt;
191 krb5_encrypt_block eblock;
192
193 ret = krb5_principal2salt(context, host_princ, &salt);
194 if (ret) {
195 DEBUG(1,("krb5_principal2salt failed (%s)\n", error_message(ret)));
196 return ret;
197 }
198 krb5_use_enctype(context, &eblock, enctype);
199 ret = krb5_string_to_key(context, &eblock, key, password, &salt);
200 SAFE_FREE(salt.data);
201 return ret;
202 }
203 #elif defined(HAVE_KRB5_GET_PW_SALT) && defined(HAVE_KRB5_STRING_TO_KEY_SALT)
204 int create_kerberos_key_from_string_direct(krb5_context context,
205 krb5_principal host_princ,
206 krb5_data *password,
207 krb5_keyblock *key,
208 krb5_enctype enctype)
209 {
210 int ret;
211 krb5_salt salt;
212
213 ret = krb5_get_pw_salt(context, host_princ, &salt);
214 if (ret) {
215 DEBUG(1,("krb5_get_pw_salt failed (%s)\n", error_message(ret)));
216 return ret;
217 }
218
219 ret = krb5_string_to_key_salt(context, enctype, (const char *)password->data, salt, key);
220 krb5_free_salt(context, salt);
221 return ret;
222 }
223 #else
224 #error UNKNOWN_CREATE_KEY_FUNCTIONS
225 #endif
226
227 int create_kerberos_key_from_string(krb5_context context,
228 krb5_principal host_princ,
229 krb5_data *password,
230 krb5_keyblock *key,
231 krb5_enctype enctype)
232 {
233 krb5_principal salt_princ = NULL;
234 int ret;
235 /*
236 * Check if we've determined that the KDC is salting keys for this
237 * principal/enctype in a non-obvious way. If it is, try to match
238 * its behavior.
239 */
240 salt_princ = kerberos_fetch_salt_princ_for_host_princ(context, host_princ, enctype);
241 ret = create_kerberos_key_from_string_direct(context, salt_princ ? salt_princ : host_princ, password, key, enctype);
242 if (salt_princ) {
243 krb5_free_principal(context, salt_princ);
244 }
245 return ret;
246 }
247
248 #if defined(HAVE_KRB5_GET_PERMITTED_ENCTYPES)
249 krb5_error_code get_kerberos_allowed_etypes(krb5_context context,
250 krb5_enctype **enctypes)
251 {
252 return krb5_get_permitted_enctypes(context, enctypes);
253 }
254 #elif defined(HAVE_KRB5_GET_DEFAULT_IN_TKT_ETYPES)
255 krb5_error_code get_kerberos_allowed_etypes(krb5_context context,
256 krb5_enctype **enctypes)
257 {
258 return krb5_get_default_in_tkt_etypes(context, enctypes);
259 }
260 #else
261 #error UNKNOWN_GET_ENCTYPES_FUNCTIONS
262 #endif
263
264 #if defined(HAVE_KRB5_AUTH_CON_SETKEY) && !defined(HAVE_KRB5_AUTH_CON_SETUSERUSERKEY)
265 krb5_error_code krb5_auth_con_setuseruserkey(krb5_context context,
266 krb5_auth_context auth_context,
267 krb5_keyblock *keyblock)
268 {
269 return krb5_auth_con_setkey(context, auth_context, keyblock);
270 }
271 #endif
272
273 BOOL unwrap_pac(TALLOC_CTX *mem_ctx, DATA_BLOB *auth_data, DATA_BLOB *unwrapped_pac_data)
274 {
275 DATA_BLOB pac_contents;
276 ASN1_DATA data;
277 int data_type;
278
279 if (!auth_data->length) {
280 return False;
281 }
282
283 asn1_load(&data, *auth_data);
284 asn1_start_tag(&data, ASN1_SEQUENCE(0));
285 asn1_start_tag(&data, ASN1_SEQUENCE(0));
286 asn1_start_tag(&data, ASN1_CONTEXT(0));
287 asn1_read_Integer(&data, &data_type);
288
289 if (data_type != KRB5_AUTHDATA_WIN2K_PAC ) {
290 DEBUG(10,("authorization data is not a Windows PAC (type: %d)\n", data_type));
291 asn1_free(&data);
292 return False;
293 }
294
295 asn1_end_tag(&data);
296 asn1_start_tag(&data, ASN1_CONTEXT(1));
297 asn1_read_OctetString(&data, &pac_contents);
298 asn1_end_tag(&data);
299 asn1_end_tag(&data);
300 asn1_end_tag(&data);
301 asn1_free(&data);
302
303 *unwrapped_pac_data = data_blob_talloc(mem_ctx, pac_contents.data, pac_contents.length);
304
305 data_blob_free(&pac_contents);
306
307 return True;
308 }
309
310 BOOL get_auth_data_from_tkt(TALLOC_CTX *mem_ctx, DATA_BLOB *auth_data, krb5_ticket *tkt)
311 {
312 DATA_BLOB auth_data_wrapped;
313 BOOL got_auth_data_pac = False;
314 int i;
315
316 #if defined(HAVE_KRB5_TKT_ENC_PART2)
317 if (tkt->enc_part2 && tkt->enc_part2->authorization_data &&
318 tkt->enc_part2->authorization_data[0] &&
319 tkt->enc_part2->authorization_data[0]->length)
320 {
321 for (i = 0; tkt->enc_part2->authorization_data[i] != NULL; i++) {
322
323 if (tkt->enc_part2->authorization_data[i]->ad_type !=
324 KRB5_AUTHDATA_IF_RELEVANT) {
325 DEBUG(10,("get_auth_data_from_tkt: ad_type is %d\n",
326 tkt->enc_part2->authorization_data[i]->ad_type));
327 continue;
328 }
329
330 auth_data_wrapped = data_blob(tkt->enc_part2->authorization_data[i]->contents,
331 tkt->enc_part2->authorization_data[i]->length);
332
333 /* check if it is a PAC */
334 got_auth_data_pac = unwrap_pac(mem_ctx, &auth_data_wrapped, auth_data);
335 data_blob_free(&auth_data_wrapped);
336
337 if (!got_auth_data_pac) {
338 continue;
339 }
340 }
341
342 return got_auth_data_pac;
343 }
344
345 #else
346 if (tkt->ticket.authorization_data &&
347 tkt->ticket.authorization_data->len)
348 {
349 for (i = 0; i < tkt->ticket.authorization_data->len; i++) {
350
351 if (tkt->ticket.authorization_data->val[i].ad_type !=
352 KRB5_AUTHDATA_IF_RELEVANT) {
353 DEBUG(10,("get_auth_data_from_tkt: ad_type is %d\n",
354 tkt->ticket.authorization_data->val[i].ad_type));
355 continue;
356 }
357
358 auth_data_wrapped = data_blob(tkt->ticket.authorization_data->val[i].ad_data.data,
359 tkt->ticket.authorization_data->val[i].ad_data.length);
360
361 /* check if it is a PAC */
362 got_auth_data_pac = unwrap_pac(mem_ctx, &auth_data_wrapped, auth_data);
363 data_blob_free(&auth_data_wrapped);
364
365 if (!got_auth_data_pac) {
366 continue;
367 }
368 }
369
370 return got_auth_data_pac;
371 }
372 #endif
373 return False;
374 }
375
376 krb5_const_principal get_principal_from_tkt(krb5_ticket *tkt)
377 {
378 #if defined(HAVE_KRB5_TKT_ENC_PART2)
379 return tkt->enc_part2->client;
380 #else
381 return tkt->client;
382 #endif
383 }
384
385 #if !defined(HAVE_KRB5_LOCATE_KDC)
386
387 /* krb5_locate_kdc is an internal MIT symbol. MIT are not yet willing to commit
388 * to a public interface for this functionality, so we have to be able to live
389 * without it if the MIT libraries are hiding their internal symbols.
390 */
391
392 #if defined(KRB5_KRBHST_INIT)
393 /* Heimdal */
394 krb5_error_code krb5_locate_kdc(krb5_context ctx, const krb5_data *realm, struct sockaddr **addr_pp, int *naddrs, int get_masters)
395 {
396 krb5_krbhst_handle hnd;
397 krb5_krbhst_info *hinfo;
398 krb5_error_code rc;
399 int num_kdcs, i;
400 struct sockaddr *sa;
401 struct addrinfo *ai;
402
403 *addr_pp = NULL;
404 *naddrs = 0;
405
406 rc = krb5_krbhst_init(ctx, realm->data, KRB5_KRBHST_KDC, &hnd);
407 if (rc) {
408 DEBUG(0, ("krb5_locate_kdc: krb5_krbhst_init failed (%s)\n", error_message(rc)));
409 return rc;
410 }
411
412 for ( num_kdcs = 0; (rc = krb5_krbhst_next(ctx, hnd, &hinfo) == 0); num_kdcs++)
413 ;
414
415 krb5_krbhst_reset(ctx, hnd);
416
417 if (!num_kdcs) {
418 DEBUG(0, ("krb5_locate_kdc: zero kdcs found !\n"));
419 krb5_krbhst_free(ctx, hnd);
420 return -1;
421 }
422
423 sa = SMB_MALLOC_ARRAY( struct sockaddr, num_kdcs );
424 if (!sa) {
425 DEBUG(0, ("krb5_locate_kdc: malloc failed\n"));
426 krb5_krbhst_free(ctx, hnd);
427 naddrs = 0;
428 return -1;
429 }
430
431 memset(sa, '\0', sizeof(struct sockaddr) * num_kdcs );
432
433 for (i = 0; i < num_kdcs && (rc = krb5_krbhst_next(ctx, hnd, &hinfo) == 0); i++) {
434
435 #if defined(HAVE_KRB5_KRBHST_GET_ADDRINFO)
436 rc = krb5_krbhst_get_addrinfo(ctx, hinfo, &ai);
437 if (rc) {
438 DEBUG(0,("krb5_krbhst_get_addrinfo failed: %s\n", error_message(rc)));
439 continue;
440 }
441 #endif
442 if (hinfo->ai && hinfo->ai->ai_family == AF_INET)
443 memcpy(&sa[i], hinfo->ai->ai_addr, sizeof(struct sockaddr));
444 }
445
446 krb5_krbhst_free(ctx, hnd);
447
448 *naddrs = num_kdcs;
449 *addr_pp = sa;
450 return 0;
451 }
452
453 #else /* ! defined(KRB5_KRBHST_INIT) */
454
455 krb5_error_code krb5_locate_kdc(krb5_context ctx, const krb5_data *realm,
456 struct sockaddr **addr_pp, int *naddrs, int get_masters)
457 {
458 DEBUG(0, ("unable to explicitly locate the KDC on this platform\n"));
459 return KRB5_KDC_UNREACH;
460 }
461
462 #endif /* KRB5_KRBHST_INIT */
463
464 #endif /* HAVE_KRB5_LOCATE_KDC */
465
466 #if !defined(HAVE_KRB5_FREE_UNPARSED_NAME)
467 void krb5_free_unparsed_name(krb5_context context, char *val)
468 {
469 SAFE_FREE(val);
470 }
471 #endif
472
473 void kerberos_free_data_contents(krb5_context context, krb5_data *pdata)
474 {
475 #if defined(HAVE_KRB5_FREE_DATA_CONTENTS)
476 if (pdata->data) {
477 krb5_free_data_contents(context, pdata);
478 }
479 #else
480 SAFE_FREE(pdata->data);
481 #endif
482 }
483
484 void kerberos_set_creds_enctype(krb5_creds *pcreds, int enctype)
485 {
486 #if defined(HAVE_KRB5_KEYBLOCK_IN_CREDS)
487 KRB5_KEY_TYPE((&pcreds->keyblock)) = enctype;
488 #elif defined(HAVE_KRB5_SESSION_IN_CREDS)
489 KRB5_KEY_TYPE((&pcreds->session)) = enctype;
490 #else
491 #error UNKNOWN_KEYBLOCK_MEMBER_IN_KRB5_CREDS_STRUCT
492 #endif
493 }
494
495 BOOL kerberos_compatible_enctypes(krb5_context context,
496 krb5_enctype enctype1,
497 krb5_enctype enctype2)
498 {
499 #if defined(HAVE_KRB5_C_ENCTYPE_COMPARE)
500 krb5_boolean similar = 0;
501
502 krb5_c_enctype_compare(context, enctype1, enctype2, &similar);
503 return similar ? True : False;
504 #elif defined(HAVE_KRB5_ENCTYPES_COMPATIBLE_KEYS)
505 return krb5_enctypes_compatible_keys(context, enctype1, enctype2) ? True : False;
506 #endif
507 }
508
509 static BOOL ads_cleanup_expired_creds(krb5_context context,
510 krb5_ccache ccache,
511 krb5_creds *credsp)
512 {
513 krb5_error_code retval;
514 const char *cc_type = krb5_cc_get_type(context, ccache);
515
516 DEBUG(3, ("ads_cleanup_expired_creds: Ticket in ccache[%s:%s] expiration %s\n",
517 cc_type, krb5_cc_get_name(context, ccache),
518 http_timestring(credsp->times.endtime)));
519
520 /* we will probably need new tickets if the current ones
521 will expire within 10 seconds.
522 */
523 if (credsp->times.endtime >= (time(NULL) + 10))
524 return False;
525
526 /* heimdal won't remove creds from a file ccache, and
527 perhaps we shouldn't anyway, since internally we
528 use memory ccaches, and a FILE one probably means that
529 we're using creds obtained outside of our exectuable
530 */
531 if (strequal(cc_type, "FILE")) {
532 DEBUG(5, ("ads_cleanup_expired_creds: We do not remove creds from a %s ccache\n", cc_type));
533 return False;
534 }
535
536 retval = krb5_cc_remove_cred(context, ccache, 0, credsp);
537 if (retval) {
538 DEBUG(1, ("ads_cleanup_expired_creds: krb5_cc_remove_cred failed, err %s\n",
539 error_message(retval)));
540 /* If we have an error in this, we want to display it,
541 but continue as though we deleted it */
542 }
543 return True;
544 }
545
546 /*
547 we can't use krb5_mk_req because w2k wants the service to be in a particular format
548 */
549 static krb5_error_code ads_krb5_mk_req(krb5_context context,
550 krb5_auth_context *auth_context,
551 const krb5_flags ap_req_options,
552 const char *principal,
553 krb5_ccache ccache,
554 krb5_data *outbuf)
555 {
556 krb5_error_code retval;
557 krb5_principal server;
558 krb5_creds * credsp;
559 krb5_creds creds;
560 krb5_data in_data;
561 BOOL creds_ready = False;
562 int i = 0, maxtries = 3;
563
564 retval = smb_krb5_parse_name(context, principal, &server);
565 if (retval) {
566 DEBUG(1,("ads_krb5_mk_req: Failed to parse principal %s\n", principal));
567 return retval;
568 }
569
570 /* obtain ticket & session key */
571 ZERO_STRUCT(creds);
572 if ((retval = krb5_copy_principal(context, server, &creds.server))) {
573 DEBUG(1,("ads_krb5_mk_req: krb5_copy_principal failed (%s)\n",
574 error_message(retval)));
575 goto cleanup_princ;
576 }
577
578 if ((retval = krb5_cc_get_principal(context, ccache, &creds.client))) {
579 /* This can commonly fail on smbd startup with no ticket in the cache.
580 * Report at higher level than 1. */
581 DEBUG(3,("ads_krb5_mk_req: krb5_cc_get_principal failed (%s)\n",
582 error_message(retval)));
583 goto cleanup_creds;
584 }
585
586 while (!creds_ready && (i < maxtries)) {
587 if ((retval = krb5_get_credentials(context, 0, ccache,
588 &creds, &credsp))) {
589 DEBUG(1,("ads_krb5_mk_req: krb5_get_credentials failed for %s (%s)\n",
590 principal, error_message(retval)));
591 goto cleanup_creds;
592 }
593
594 /* cope with ticket being in the future due to clock skew */
595 if ((unsigned)credsp->times.starttime > time(NULL)) {
596 time_t t = time(NULL);
597 int time_offset =(int)((unsigned)credsp->times.starttime-t);
598 DEBUG(4,("ads_krb5_mk_req: Advancing clock by %d seconds to cope with clock skew\n", time_offset));
599 krb5_set_real_time(context, t + time_offset + 1, 0);
600 }
601
602 if (!ads_cleanup_expired_creds(context, ccache, credsp))
603 creds_ready = True;
604
605 i++;
606 }
607
608 DEBUG(10,("ads_krb5_mk_req: Ticket (%s) in ccache (%s:%s) is valid until: (%s - %u)\n",
609 principal, krb5_cc_get_type(context, ccache), krb5_cc_get_name(context, ccache),
610 http_timestring((unsigned)credsp->times.endtime),
611 (unsigned)credsp->times.endtime));
612
613 in_data.length = 0;
614 retval = krb5_mk_req_extended(context, auth_context, ap_req_options,
615 &in_data, credsp, outbuf);
616 if (retval) {
617 DEBUG(1,("ads_krb5_mk_req: krb5_mk_req_extended failed (%s)\n",
618 error_message(retval)));
619 }
620
621 krb5_free_creds(context, credsp);
622
623 cleanup_creds:
624 krb5_free_cred_contents(context, &creds);
625
626 cleanup_princ:
627 krb5_free_principal(context, server);
628
629 return retval;
630 }
631
632 /*
633 get a kerberos5 ticket for the given service
634 */
635 int cli_krb5_get_ticket(const char *principal, time_t time_offset,
636 DATA_BLOB *ticket, DATA_BLOB *session_key_krb5,
637 uint32 extra_ap_opts, const char *ccname)
638 {
639 krb5_error_code retval;
640 krb5_data packet;
641 krb5_context context = NULL;
642 krb5_ccache ccdef = NULL;
643 krb5_auth_context auth_context = NULL;
644 krb5_enctype enc_types[] = {
645 #ifdef ENCTYPE_ARCFOUR_HMAC
646 ENCTYPE_ARCFOUR_HMAC,
647 #endif
648 ENCTYPE_DES_CBC_MD5,
649 ENCTYPE_DES_CBC_CRC,
650 ENCTYPE_NULL};
651
652 initialize_krb5_error_table();
653 retval = krb5_init_context(&context);
654 if (retval) {
655 DEBUG(1,("cli_krb5_get_ticket: krb5_init_context failed (%s)\n",
656 error_message(retval)));
657 goto failed;
658 }
659
660 if (time_offset != 0) {
661 krb5_set_real_time(context, time(NULL) + time_offset, 0);
662 }
663
664 if ((retval = krb5_cc_resolve(context, ccname ?
665 ccname : krb5_cc_default_name(context), &ccdef))) {
666 DEBUG(1,("cli_krb5_get_ticket: krb5_cc_default failed (%s)\n",
667 error_message(retval)));
668 goto failed;
669 }
670
671 if ((retval = krb5_set_default_tgs_ktypes(context, enc_types))) {
672 DEBUG(1,("cli_krb5_get_ticket: krb5_set_default_tgs_ktypes failed (%s)\n",
673 error_message(retval)));
674 goto failed;
675 }
676
677 if ((retval = ads_krb5_mk_req(context,
678 &auth_context,
679 AP_OPTS_USE_SUBKEY | (krb5_flags)extra_ap_opts,
680 principal,
681 ccdef, &packet))) {
682 goto failed;
683 }
684
685 get_krb5_smb_session_key(context, auth_context, session_key_krb5, False);
686
687 *ticket = data_blob(packet.data, packet.length);
688
689 kerberos_free_data_contents(context, &packet);
690
691 failed:
692
693 if ( context ) {
694 if (ccdef)
695 krb5_cc_close(context, ccdef);
696 if (auth_context)
697 krb5_auth_con_free(context, auth_context);
698 krb5_free_context(context);
699 }
700
701 return retval;
702 }
703
704 BOOL get_krb5_smb_session_key(krb5_context context, krb5_auth_context auth_context, DATA_BLOB *session_key, BOOL remote)
705 {
706 krb5_keyblock *skey;
707 krb5_error_code err;
708 BOOL ret = False;
709
710 if (remote)
711 err = krb5_auth_con_getremotesubkey(context, auth_context, &skey);
712 else
713 err = krb5_auth_con_getlocalsubkey(context, auth_context, &skey);
714 if (err == 0 && skey != NULL) {
715 DEBUG(10, ("Got KRB5 session key of length %d\n", (int)KRB5_KEY_LENGTH(skey)));
716 *session_key = data_blob(KRB5_KEY_DATA(skey), KRB5_KEY_LENGTH(skey));
717 dump_data_pw("KRB5 Session Key:\n", session_key->data, session_key->length);
718
719 ret = True;
720
721 krb5_free_keyblock(context, skey);
722 } else {
723 DEBUG(10, ("KRB5 error getting session key %d\n", err));
724 }
725
726 return ret;
727 }
728
729
730 #if defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING) && !defined(HAVE_KRB5_PRINC_COMPONENT)
731 const krb5_data *krb5_princ_component(krb5_context context, krb5_principal principal, int i );
732
733 const krb5_data *krb5_princ_component(krb5_context context, krb5_principal principal, int i )
734 {
735 static krb5_data kdata;
736
737 kdata.data = (char *)krb5_principal_get_comp_string(context, principal, i);
738 kdata.length = strlen((const char *)kdata.data);
739 return &kdata;
740 }
741 #endif
742
743 krb5_error_code smb_krb5_kt_free_entry(krb5_context context, krb5_keytab_entry *kt_entry)
744 {
745 #if defined(HAVE_KRB5_KT_FREE_ENTRY)
746 return krb5_kt_free_entry(context, kt_entry);
747 #elif defined(HAVE_KRB5_FREE_KEYTAB_ENTRY_CONTENTS)
748 return krb5_free_keytab_entry_contents(context, kt_entry);
749 #else
750 #error UNKNOWN_KT_FREE_FUNCTION
751 #endif
752 }
753
754 void smb_krb5_checksum_from_pac_sig(krb5_checksum *cksum,
755 PAC_SIGNATURE_DATA *sig)
756 {
757 #ifdef HAVE_CHECKSUM_IN_KRB5_CHECKSUM
758 cksum->cksumtype = (krb5_cksumtype)sig->type;
759 cksum->checksum.length = sig->signature.buf_len;
760 cksum->checksum.data = sig->signature.buffer;
761 #else
762 cksum->checksum_type = (krb5_cksumtype)sig->type;
763 cksum->length = sig->signature.buf_len;
764 cksum->contents = sig->signature.buffer;
765 #endif
766 }
767
768 krb5_error_code smb_krb5_verify_checksum(krb5_context context,
769 krb5_keyblock *keyblock,
770 krb5_keyusage usage,
771 krb5_checksum *cksum,
772 uint8 *data,
773 size_t length)
774 {
775 krb5_error_code ret;
776
777 /* verify the checksum */
778
779 /* welcome to the wonderful world of samba's kerberos abstraction layer:
780 *
781 * function heimdal 0.6.1rc3 heimdal 0.7 MIT krb 1.4.2
782 * -----------------------------------------------------------------------------
783 * krb5_c_verify_checksum - works works
784 * krb5_verify_checksum works (6 args) works (6 args) broken (7 args)
785 */
786
787 #if defined(HAVE_KRB5_C_VERIFY_CHECKSUM)
788 {
789 krb5_boolean checksum_valid = False;
790 krb5_data input;
791
792 input.data = (char *)data;
793 input.length = length;
794
795 ret = krb5_c_verify_checksum(context,
796 keyblock,
797 usage,
798 &input,
799 cksum,
800 &checksum_valid);
801 if (ret) {
802 DEBUG(3,("smb_krb5_verify_checksum: krb5_c_verify_checksum() failed: %s\n",
803 error_message(ret)));
804 return ret;
805 }
806
807 if (!checksum_valid)
808 ret = KRB5KRB_AP_ERR_BAD_INTEGRITY;
809 }
810
811 #elif KRB5_VERIFY_CHECKSUM_ARGS == 6 && defined(HAVE_KRB5_CRYPTO_INIT) && defined(HAVE_KRB5_CRYPTO) && defined(HAVE_KRB5_CRYPTO_DESTROY)
812
813 /* Warning: MIT's krb5_verify_checksum cannot be used as it will use a key
814 * without enctype and it ignores any key_usage types - Guenther */
815
816 {
817
818 krb5_crypto crypto;
819 ret = krb5_crypto_init(context,
820 keyblock,
821 0,
822 &crypto);
823 if (ret) {
824 DEBUG(0,("smb_krb5_verify_checksum: krb5_crypto_init() failed: %s\n",
825 error_message(ret)));
826 return ret;
827 }
828
829 ret = krb5_verify_checksum(context,
830 crypto,
831 usage,
832 data,
833 length,
834 cksum);
835
836 krb5_crypto_destroy(context, crypto);
837 }
838
839 #else
840 #error UNKNOWN_KRB5_VERIFY_CHECKSUM_FUNCTION
841 #endif
842
843 return ret;
844 }
845
846 time_t get_authtime_from_tkt(krb5_ticket *tkt)
847 {
848 #if defined(HAVE_KRB5_TKT_ENC_PART2)
849 return tkt->enc_part2->times.authtime;
850 #else
851 return tkt->ticket.authtime;
852 #endif
853 }
854
855 static int get_kvno_from_ap_req(krb5_ap_req *ap_req)
856 {
857 #ifdef HAVE_TICKET_POINTER_IN_KRB5_AP_REQ /* MIT */
858 if (ap_req->ticket->enc_part.kvno)
859 return ap_req->ticket->enc_part.kvno;
860 #else /* Heimdal */
861 if (ap_req->ticket.enc_part.kvno)
862 return *ap_req->ticket.enc_part.kvno;
863 #endif
864 return 0;
865 }
866
867 static krb5_enctype get_enctype_from_ap_req(krb5_ap_req *ap_req)
868 {
869 #ifdef HAVE_ETYPE_IN_ENCRYPTEDDATA /* Heimdal */
870 return ap_req->ticket.enc_part.etype;
871 #else /* MIT */
872 return ap_req->ticket->enc_part.enctype;
873 #endif
874 }
875
876 static krb5_error_code
877 get_key_from_keytab(krb5_context context,
878 krb5_const_principal server,
879 krb5_enctype enctype,
880 krb5_kvno kvno,
881 krb5_keyblock **out_key)
882 {
883 krb5_keytab_entry entry;
884 krb5_error_code ret;
885 krb5_keytab keytab;
886 char *name = NULL;
887
888 /* We have to open a new keytab handle here, as MIT does
889 an implicit open/getnext/close on krb5_kt_get_entry. We
890 may be in the middle of a keytab enumeration when this is
891 called. JRA. */
892
893 ret = krb5_kt_default(context, &keytab);
894 if (ret) {
895 DEBUG(0,("get_key_from_keytab: failed to open keytab: %s\n", error_message(ret)));
896 return ret;
897 }
898
899 if ( DEBUGLEVEL >= 10 ) {
900 if (smb_krb5_unparse_name(context, server, &name) == 0) {
901 DEBUG(10,("get_key_from_keytab: will look for kvno %d, enctype %d and name: %s\n",
902 kvno, enctype, name));
903 SAFE_FREE(name);
904 }
905 }
906
907 ret = krb5_kt_get_entry(context,
908 keytab,
909 server,
910 kvno,
911 enctype,
912 &entry);
913
914 if (ret) {
915 DEBUG(0,("get_key_from_keytab: failed to retrieve key: %s\n", error_message(ret)));
916 goto out;
917 }
918
919 #ifdef HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK /* Heimdal */
920 ret = krb5_copy_keyblock(context, &entry.keyblock, out_key);
921 #elif defined(HAVE_KRB5_KEYTAB_ENTRY_KEY) /* MIT */
922 ret = krb5_copy_keyblock(context, &entry.key, out_key);
923 #else
924 #error UNKNOWN_KRB5_KEYTAB_ENTRY_FORMAT
925 #endif
926
927 if (ret) {
928 DEBUG(0,("get_key_from_keytab: failed to copy key: %s\n", error_message(ret)));
929 goto out;
930 }
931
932 smb_krb5_kt_free_entry(context, &entry);
933
934 out:
935 krb5_kt_close(context, keytab);
936 return ret;
937 }
938
939 /* Prototypes */
940
941 krb5_error_code smb_krb5_get_keyinfo_from_ap_req(krb5_context context,
942 const krb5_data *inbuf,
943 krb5_kvno *kvno,
944 krb5_enctype *enctype)
945 {
946 #ifdef HAVE_KRB5_DECODE_AP_REQ /* Heimdal */
947 {
948 krb5_error_code ret;
949 krb5_ap_req ap_req;
950
951 ret = krb5_decode_ap_req(context, inbuf, &ap_req);
952 if (ret)
953 return ret;
954
955 *kvno = get_kvno_from_ap_req(&ap_req);
956 *enctype = get_enctype_from_ap_req(&ap_req);
957
958 free_AP_REQ(&ap_req);
959 return 0;
960 }
961 #endif
962
963 /* Possibly not an appropriate error code. */
964 return KRB5KDC_ERR_BADOPTION;
965 }
966
967 krb5_error_code krb5_rd_req_return_keyblock_from_keytab(krb5_context context,
968 krb5_auth_context *auth_context,
969 const krb5_data *inbuf,
970 krb5_const_principal server,
971 krb5_keytab keytab,
972 krb5_flags *ap_req_options,
973 krb5_ticket **ticket,
974 krb5_keyblock **keyblock)
975 {
976 krb5_error_code ret;
977 krb5_kvno kvno;
978 krb5_enctype enctype;
979 krb5_keyblock *local_keyblock;
980
981 ret = krb5_rd_req(context,
982 auth_context,
983 inbuf,
984 server,
985 keytab,
986 ap_req_options,
987 ticket);
988 if (ret) {
989 return ret;
990 }
991
992 #ifdef KRB5_TICKET_HAS_KEYINFO
993 enctype = (*ticket)->enc_part.enctype;
994 kvno = (*ticket)->enc_part.kvno;
995 #else
996 ret = smb_krb5_get_keyinfo_from_ap_req(context, inbuf, &kvno, &enctype);
997 if (ret) {
998 return ret;
999 }
1000 #endif
1001
1002 ret = get_key_from_keytab(context,
1003 server,
1004 enctype,
1005 kvno,
1006 &local_keyblock);
1007 if (ret) {
1008 DEBUG(0,("krb5_rd_req_return_keyblock_from_keytab: failed to call get_key_from_keytab\n"));
1009 goto out;
1010 }
1011
1012 out:
1013 if (ret && local_keyblock != NULL) {
1014 krb5_free_keyblock(context, local_keyblock);
1015 } else {
1016 *keyblock = local_keyblock;
1017 }
1018
1019 return ret;
1020 }
1021
1022 krb5_error_code smb_krb5_parse_name_norealm(krb5_context context,
1023 const char *name,
1024 krb5_principal *principal)
1025 {
1026 #ifdef HAVE_KRB5_PARSE_NAME_NOREALM
1027 return smb_krb5_parse_name_norealm_conv(context, name, principal);
1028 #endif
1029
1030 /* we are cheating here because parse_name will in fact set the realm.
1031 * We don't care as the only caller of smb_krb5_parse_name_norealm
1032 * ignores the realm anyway when calling
1033 * smb_krb5_principal_compare_any_realm later - Guenther */
1034
1035 return smb_krb5_parse_name(context, name, principal);
1036 }
1037
1038 BOOL smb_krb5_principal_compare_any_realm(krb5_context context,
1039 krb5_const_principal princ1,
1040 krb5_const_principal princ2)
1041 {
1042 #ifdef HAVE_KRB5_PRINCIPAL_COMPARE_ANY_REALM
1043
1044 return krb5_principal_compare_any_realm(context, princ1, princ2);
1045
1046 /* krb5_princ_size is a macro in MIT */
1047 #elif defined(HAVE_KRB5_PRINC_SIZE) || defined(krb5_princ_size)
1048
1049 int i, len1, len2;
1050 const krb5_data *p1, *p2;
1051
1052 len1 = krb5_princ_size(context, princ1);
1053 len2 = krb5_princ_size(context, princ2);
1054
1055 if (len1 != len2)
1056 return False;
1057
1058 for (i = 0; i < len1; i++) {
1059
1060 p1 = krb5_princ_component(context, CONST_DISCARD(krb5_principal, princ1), i);
1061 p2 = krb5_princ_component(context, CONST_DISCARD(krb5_principal, princ2), i);
1062
1063 if (p1->length != p2->length || memcmp(p1->data, p2->data, p1->length))
1064 return False;
1065 }
1066
1067 return True;
1068 #else
1069 #error NO_SUITABLE_PRINCIPAL_COMPARE_FUNCTION
1070 #endif
1071 }
1072
1073 krb5_error_code smb_krb5_renew_ticket(const char *ccache_string, /* FILE:/tmp/krb5cc_0 */
1074 const char *client_string, /* gd@BER.SUSE.DE */
1075 const char *service_string, /* krbtgt/BER.SUSE.DE@BER.SUSE.DE */
1076 time_t *new_start_time)
1077 {
1078 krb5_error_code ret;
1079 krb5_context context = NULL;
1080 krb5_ccache ccache = NULL;
1081 krb5_principal client = NULL;
1082
1083 initialize_krb5_error_table();
1084 ret = krb5_init_context(&context);
1085 if (ret) {
1086 goto done;
1087 }
1088
1089 if (!ccache_string) {
1090 ccache_string = krb5_cc_default_name(context);
1091 }
1092
1093 DEBUG(10,("smb_krb5_renew_ticket: using %s as ccache\n", ccache_string));
1094
1095 /* FIXME: we should not fall back to defaults */
1096 ret = krb5_cc_resolve(context, CONST_DISCARD(char *, ccache_string), &ccache);
1097 if (ret) {
1098 goto done;
1099 }
1100
1101 #ifdef HAVE_KRB5_GET_RENEWED_CREDS /* MIT */
1102 {
1103 krb5_creds creds;
1104
1105 if (client_string) {
1106 ret = smb_krb5_parse_name(context, client_string, &client);
1107 if (ret) {
1108 goto done;
1109 }
1110 } else {
1111 ret = krb5_cc_get_principal(context, ccache, &client);
1112 if (ret) {
1113 goto done;
1114 }
1115 }
1116
1117 ret = krb5_get_renewed_creds(context, &creds, client, ccache, CONST_DISCARD(char *, service_string));
1118 if (ret) {
1119 DEBUG(10,("smb_krb5_renew_ticket: krb5_get_kdc_cred failed: %s\n", error_message(ret)));
1120 goto done;
1121 }
1122
1123 /* hm, doesn't that create a new one if the old one wasn't there? - Guenther */
1124 ret = krb5_cc_initialize(context, ccache, client);
1125 if (ret) {
1126 goto done;
1127 }
1128
1129 ret = krb5_cc_store_cred(context, ccache, &creds);
1130
1131 if (new_start_time) {
1132 *new_start_time = (time_t) creds.times.renew_till;
1133 }
1134
1135 krb5_free_cred_contents(context, &creds);
1136 }
1137 #elif defined(HAVE_KRB5_GET_KDC_CRED) /* Heimdal */
1138 {
1139 krb5_kdc_flags flags;
1140 krb5_creds creds_in;
1141 krb5_realm *client_realm;
1142 krb5_creds *creds;
1143
1144 memset(&creds_in, 0, sizeof(creds_in));
1145
1146 if (client_string) {
1147 ret = smb_krb5_parse_name(context, client_string, &creds_in.client);
1148 if (ret) {
1149 goto done;
1150 }
1151 } else {
1152 ret = krb5_cc_get_principal(context, ccache, &creds_in.client);
1153 if (ret) {
1154 goto done;
1155 }
1156 }
1157
1158 if (service_string) {
1159 ret = smb_krb5_parse_name(context, service_string, &creds_in.server);
1160 if (ret) {
1161 goto done;
1162 }
1163 } else {
1164 /* build tgt service by default */
1165 client_realm = krb5_princ_realm(context, client);
1166 ret = krb5_make_principal(context, &creds_in.server, *client_realm, KRB5_TGS_NAME, *client_realm, NULL);
1167 if (ret) {
1168 goto done;
1169 }
1170 }
1171
1172 flags.i = 0;
1173 flags.b.renewable = flags.b.renew = True;
1174
1175 ret = krb5_get_kdc_cred(context, ccache, flags, NULL, NULL, &creds_in, &creds);
1176 if (ret) {
1177 DEBUG(10,("smb_krb5_renew_ticket: krb5_get_kdc_cred failed: %s\n", error_message(ret)));
1178 goto done;
1179 }
1180
1181 /* hm, doesn't that create a new one if the old one wasn't there? - Guenther */
1182 ret = krb5_cc_initialize(context, ccache, creds_in.client);
1183 if (ret) {
1184 goto done;
1185 }
1186
1187 ret = krb5_cc_store_cred(context, ccache, creds);
1188
1189 if (new_start_time) {
1190 *new_start_time = (time_t) creds->times.renew_till;
1191 }
1192
1193 krb5_free_cred_contents(context, &creds_in);
1194 krb5_free_creds(context, creds);
1195 }
1196 #else
1197 #error No suitable krb5 ticket renew function available
1198 #endif
1199
1200
1201 done:
1202 if (client) {
1203 krb5_free_principal(context, client);
1204 }
1205 if (context) {
1206 krb5_free_context(context);
1207 }
1208 if (ccache) {
1209 krb5_cc_close(context, ccache);
1210 }
1211
1212 return ret;
1213
1214 }
1215
1216 krb5_error_code smb_krb5_free_addresses(krb5_context context, smb_krb5_addresses *addr)
1217 {
1218 krb5_error_code ret = 0;
1219 if (addr == NULL) {
1220 return ret;
1221 }
1222 #if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
1223 krb5_free_addresses(context, addr->addrs);
1224 #elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
1225 ret = krb5_free_addresses(context, addr->addrs);
1226 SAFE_FREE(addr->addrs);
1227 #endif
1228 SAFE_FREE(addr);
1229 addr = NULL;
1230 return ret;
1231 }
1232
1233 krb5_error_code smb_krb5_gen_netbios_krb5_address(smb_krb5_addresses **kerb_addr)
1234 {
1235 krb5_error_code ret = 0;
1236 nstring buf;
1237 #if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
1238 krb5_address **addrs = NULL;
1239 #elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
1240 krb5_addresses *addrs = NULL;
1241 #endif
1242
1243 *kerb_addr = (smb_krb5_addresses *)SMB_MALLOC(sizeof(smb_krb5_addresses));
1244 if (*kerb_addr == NULL) {
1245 return ENOMEM;
1246 }
1247
1248 put_name(buf, global_myname(), ' ', 0x20);
1249
1250 #if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
1251 {
1252 int num_addr = 2;
1253
1254 addrs = (krb5_address **)SMB_MALLOC(sizeof(krb5_address *) * num_addr);
1255 if (addrs == NULL) {
1256 SAFE_FREE(kerb_addr);
1257 return ENOMEM;
1258 }
1259
1260 memset(addrs, 0, sizeof(krb5_address *) * num_addr);
1261
1262 addrs[0] = (krb5_address *)SMB_MALLOC(sizeof(krb5_address));
1263 if (addrs[0] == NULL) {
1264 SAFE_FREE(addrs);
1265 SAFE_FREE(kerb_addr);
1266 return ENOMEM;
1267 }
1268
1269 addrs[0]->magic = KV5M_ADDRESS;
1270 addrs[0]->addrtype = KRB5_ADDR_NETBIOS;
1271 addrs[0]->length = MAX_NETBIOSNAME_LEN;
1272 addrs[0]->contents = (unsigned char *)SMB_MALLOC(addrs[0]->length);
1273 if (addrs[0]->contents == NULL) {
1274 SAFE_FREE(addrs[0]);
1275 SAFE_FREE(addrs);
1276 SAFE_FREE(kerb_addr);
1277 return ENOMEM;
1278 }
1279
1280 memcpy(addrs[0]->contents, buf, addrs[0]->length);
1281
1282 addrs[1] = NULL;
1283 }
1284 #elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
1285 {
1286 addrs = (krb5_addresses *)SMB_MALLOC(sizeof(krb5_addresses));
1287 if (addrs == NULL) {
1288 SAFE_FREE(kerb_addr);
1289 return ENOMEM;
1290 }
1291
1292 memset(addrs, 0, sizeof(krb5_addresses));
1293
1294 addrs->len = 1;
1295 addrs->val = (krb5_address *)SMB_MALLOC(sizeof(krb5_address));
1296 if (addrs->val == NULL) {
1297 SAFE_FREE(addrs);
1298 SAFE_FREE(kerb_addr);
1299 return ENOMEM;
1300 }
1301
1302 addrs->val[0].addr_type = KRB5_ADDR_NETBIOS;
1303 addrs->val[0].address.length = MAX_NETBIOSNAME_LEN;
1304 addrs->val[0].address.data = (unsigned char *)SMB_MALLOC(addrs->val[0].address.length);
1305 if (addrs->val[0].address.data == NULL) {
1306 SAFE_FREE(addrs->val);
1307 SAFE_FREE(addrs);
1308 SAFE_FREE(kerb_addr);
1309 return ENOMEM;
1310 }
1311
1312 memcpy(addrs->val[0].address.data, buf, addrs->val[0].address.length);
1313 }
1314 #else
1315 #error UNKNOWN_KRB5_ADDRESS_FORMAT
1316 #endif
1317 (*kerb_addr)->addrs = addrs;
1318
1319 return ret;
1320 }
1321
1322 void smb_krb5_free_error(krb5_context context, krb5_error *krberror)
1323 {
1324 #ifdef HAVE_KRB5_FREE_ERROR_CONTENTS /* Heimdal */
1325 krb5_free_error_contents(context, krberror);
1326 #else /* MIT */
1327 krb5_free_error(context, krberror);
1328 #endif
1329 }
1330
1331 krb5_error_code handle_krberror_packet(krb5_context context,
1332 krb5_data *packet)
1333 {
1334 krb5_error_code ret;
1335 BOOL got_error_code = False;
1336
1337 DEBUG(10,("handle_krberror_packet: got error packet\n"));
1338
1339 #ifdef HAVE_E_DATA_POINTER_IN_KRB5_ERROR /* Heimdal */
1340 {
1341 krb5_error krberror;
1342
1343 if ((ret = krb5_rd_error(context, packet, &krberror))) {
1344 DEBUG(10,("handle_krberror_packet: krb5_rd_error failed with: %s\n",
1345 error_message(ret)));
1346 return ret;
1347 }
1348
1349 if (krberror.e_data == NULL || krberror.e_data->data == NULL) {
1350 ret = (krb5_error_code) krberror.error_code;
1351 got_error_code = True;
1352 }
1353
1354 smb_krb5_free_error(context, &krberror);
1355 }
1356 #else /* MIT */
1357 {
1358 krb5_error *krberror;
1359
1360 if ((ret = krb5_rd_error(context, packet, &krberror))) {
1361 DEBUG(10,("handle_krberror_packet: krb5_rd_error failed with: %s\n",
1362 error_message(ret)));
1363 return ret;
1364 }
1365
1366 if (krberror->e_data.data == NULL) {
1367 ret = ERROR_TABLE_BASE_krb5 + (krb5_error_code) krberror->error;
1368 got_error_code = True;
1369 }
1370 smb_krb5_free_error(context, krberror);
1371 }
1372 #endif
1373 if (got_error_code) {
1374 DEBUG(5,("handle_krberror_packet: got KERBERR from kpasswd: %s (%d)\n",
1375 error_message(ret), ret));
1376 }
1377 return ret;
1378 }
1379
1380 #else /* HAVE_KRB5 */
1381 /* this saves a few linking headaches */
1382 int cli_krb5_get_ticket(const char *principal, time_t time_offset,
1383 DATA_BLOB *ticket, DATA_BLOB *session_key_krb5, uint32 extra_ap_opts,
1384 const char *ccname)
1385 {
1386 DEBUG(0,("NO KERBEROS SUPPORT\n"));
1387 return 1;
1388 }
1389
1390 #endif
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