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
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.
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.
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.
24 #define KRB5_PRIVATE 1 /* this file uses PRIVATE interfaces! */
25 #define KRB5_DEPRECATED 1 /* this file uses DEPRECATED interfaces! */
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)
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 */
41 /**************************************************************
42 Wrappers around kerberos string functions that convert from
43 utf8 -> unix charset and vica versa.
44 **************************************************************/
46 /**************************************************************
47 krb5_parse_name that takes a UNIX charset.
48 **************************************************************/
50 krb5_error_code smb_krb5_parse_name(krb5_context context,
51 const char *name, /* in unix charset */
52 krb5_principal *principal)
57 if (push_utf8_allocate(&utf8_name, name) == (size_t)-1) {
61 ret = krb5_parse_name(context, utf8_name, principal);
66 #ifdef HAVE_KRB5_PARSE_NAME_NOREALM
67 /**************************************************************
68 krb5_parse_name_norealm that takes a UNIX charset.
69 **************************************************************/
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)
79 if (push_utf8_allocate(&utf8_name, name) == (size_t)-1) {
83 ret = krb5_parse_name_norealm(context, utf8_name, principal);
89 /**************************************************************
90 krb5_parse_name that returns a UNIX charset name. Must
91 be freed with normal free() call.
92 **************************************************************/
94 krb5_error_code smb_krb5_unparse_name(krb5_context context,
95 krb5_const_principal principal,
102 ret = krb5_unparse_name(context, principal, &utf8_name);
107 if (pull_utf8_allocate(unix_name, utf8_name)==-1) {
108 krb5_free_unparsed_name(context, utf8_name);
111 krb5_free_unparsed_name(context, utf8_name);
115 #ifndef HAVE_KRB5_SET_REAL_TIME
117 * This function is not in the Heimdal mainline.
119 krb5_error_code krb5_set_real_time(krb5_context context, int32_t seconds, int32_t microseconds)
124 ret = krb5_us_timeofday(context, &sec, &usec);
128 context->kdc_sec_offset = seconds - sec;
129 context->kdc_usec_offset = microseconds - usec;
135 #if !defined(HAVE_KRB5_SET_DEFAULT_TGS_KTYPES)
137 #if defined(HAVE_KRB5_SET_DEFAULT_TGS_ENCTYPES)
139 /* With MIT kerberos, we should use krb5_set_default_tgs_enctypes in preference
140 * to krb5_set_default_tgs_ktypes. See
141 * http://lists.samba.org/archive/samba-technical/2006-July/048271.html
143 * If the MIT libraries are not exporting internal symbols, we will end up in
144 * this branch, which is correct. Otherwise we will continue to use the
147 krb5_error_code krb5_set_default_tgs_ktypes(krb5_context ctx, const krb5_enctype *enc)
149 return krb5_set_default_tgs_enctypes(ctx, enc);
152 #elif defined(HAVE_KRB5_SET_DEFAULT_IN_TKT_ETYPES)
155 krb5_error_code krb5_set_default_tgs_ktypes(krb5_context ctx, const krb5_enctype *enc)
157 return krb5_set_default_in_tkt_etypes(ctx, enc);
160 #endif /* HAVE_KRB5_SET_DEFAULT_TGS_ENCTYPES */
162 #endif /* HAVE_KRB5_SET_DEFAULT_TGS_KTYPES */
164 #if defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS)
166 void setup_kaddr( krb5_address *pkaddr, struct sockaddr *paddr)
168 pkaddr->addr_type = KRB5_ADDRESS_INET;
169 pkaddr->address.length = sizeof(((struct sockaddr_in *)paddr)->sin_addr);
170 pkaddr->address.data = (char *)&(((struct sockaddr_in *)paddr)->sin_addr);
172 #elif defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS)
174 void setup_kaddr( krb5_address *pkaddr, struct sockaddr *paddr)
176 pkaddr->addrtype = ADDRTYPE_INET;
177 pkaddr->length = sizeof(((struct sockaddr_in *)paddr)->sin_addr);
178 pkaddr->contents = (krb5_octet *)&(((struct sockaddr_in *)paddr)->sin_addr);
181 #error UNKNOWN_ADDRTYPE
184 #if defined(HAVE_KRB5_PRINCIPAL2SALT) && defined(HAVE_KRB5_USE_ENCTYPE) && defined(HAVE_KRB5_STRING_TO_KEY) && defined(HAVE_KRB5_ENCRYPT_BLOCK)
185 int create_kerberos_key_from_string_direct(krb5_context context,
186 krb5_principal host_princ,
189 krb5_enctype enctype)
193 krb5_encrypt_block eblock;
195 ret = krb5_principal2salt(context, host_princ, &salt);
197 DEBUG(1,("krb5_principal2salt failed (%s)\n", error_message(ret)));
200 krb5_use_enctype(context, &eblock, enctype);
201 ret = krb5_string_to_key(context, &eblock, key, password, &salt);
202 SAFE_FREE(salt.data);
205 #elif defined(HAVE_KRB5_GET_PW_SALT) && defined(HAVE_KRB5_STRING_TO_KEY_SALT)
206 int create_kerberos_key_from_string_direct(krb5_context context,
207 krb5_principal host_princ,
210 krb5_enctype enctype)
215 ret = krb5_get_pw_salt(context, host_princ, &salt);
217 DEBUG(1,("krb5_get_pw_salt failed (%s)\n", error_message(ret)));
221 ret = krb5_string_to_key_salt(context, enctype, (const char *)password->data, salt, key);
222 krb5_free_salt(context, salt);
226 #error UNKNOWN_CREATE_KEY_FUNCTIONS
229 int create_kerberos_key_from_string(krb5_context context,
230 krb5_principal host_princ,
233 krb5_enctype enctype)
235 krb5_principal salt_princ = NULL;
238 * Check if we've determined that the KDC is salting keys for this
239 * principal/enctype in a non-obvious way. If it is, try to match
242 salt_princ = kerberos_fetch_salt_princ_for_host_princ(context, host_princ, enctype);
243 ret = create_kerberos_key_from_string_direct(context, salt_princ ? salt_princ : host_princ, password, key, enctype);
245 krb5_free_principal(context, salt_princ);
250 #if defined(HAVE_KRB5_GET_PERMITTED_ENCTYPES)
251 krb5_error_code get_kerberos_allowed_etypes(krb5_context context,
252 krb5_enctype **enctypes)
254 return krb5_get_permitted_enctypes(context, enctypes);
256 #elif defined(HAVE_KRB5_GET_DEFAULT_IN_TKT_ETYPES)
257 krb5_error_code get_kerberos_allowed_etypes(krb5_context context,
258 krb5_enctype **enctypes)
260 return krb5_get_default_in_tkt_etypes(context, enctypes);
263 #error UNKNOWN_GET_ENCTYPES_FUNCTIONS
266 #if defined(HAVE_KRB5_AUTH_CON_SETKEY) && !defined(HAVE_KRB5_AUTH_CON_SETUSERUSERKEY)
267 krb5_error_code krb5_auth_con_setuseruserkey(krb5_context context,
268 krb5_auth_context auth_context,
269 krb5_keyblock *keyblock)
271 return krb5_auth_con_setkey(context, auth_context, keyblock);
275 BOOL unwrap_pac(TALLOC_CTX *mem_ctx, DATA_BLOB *auth_data, DATA_BLOB *unwrapped_pac_data)
277 DATA_BLOB pac_contents;
281 if (!auth_data->length) {
285 asn1_load(&data, *auth_data);
286 asn1_start_tag(&data, ASN1_SEQUENCE(0));
287 asn1_start_tag(&data, ASN1_SEQUENCE(0));
288 asn1_start_tag(&data, ASN1_CONTEXT(0));
289 asn1_read_Integer(&data, &data_type);
291 if (data_type != KRB5_AUTHDATA_WIN2K_PAC ) {
292 DEBUG(10,("authorization data is not a Windows PAC (type: %d)\n", data_type));
298 asn1_start_tag(&data, ASN1_CONTEXT(1));
299 asn1_read_OctetString(&data, &pac_contents);
305 *unwrapped_pac_data = data_blob_talloc(mem_ctx, pac_contents.data, pac_contents.length);
307 data_blob_free(&pac_contents);
312 BOOL get_auth_data_from_tkt(TALLOC_CTX *mem_ctx, DATA_BLOB *auth_data, krb5_ticket *tkt)
314 DATA_BLOB auth_data_wrapped;
315 BOOL got_auth_data_pac = False;
318 #if defined(HAVE_KRB5_TKT_ENC_PART2)
319 if (tkt->enc_part2 && tkt->enc_part2->authorization_data &&
320 tkt->enc_part2->authorization_data[0] &&
321 tkt->enc_part2->authorization_data[0]->length)
323 for (i = 0; tkt->enc_part2->authorization_data[i] != NULL; i++) {
325 if (tkt->enc_part2->authorization_data[i]->ad_type !=
326 KRB5_AUTHDATA_IF_RELEVANT) {
327 DEBUG(10,("get_auth_data_from_tkt: ad_type is %d\n",
328 tkt->enc_part2->authorization_data[i]->ad_type));
332 auth_data_wrapped = data_blob(tkt->enc_part2->authorization_data[i]->contents,
333 tkt->enc_part2->authorization_data[i]->length);
335 /* check if it is a PAC */
336 got_auth_data_pac = unwrap_pac(mem_ctx, &auth_data_wrapped, auth_data);
337 data_blob_free(&auth_data_wrapped);
339 if (!got_auth_data_pac) {
344 return got_auth_data_pac;
348 if (tkt->ticket.authorization_data &&
349 tkt->ticket.authorization_data->len)
351 for (i = 0; i < tkt->ticket.authorization_data->len; i++) {
353 if (tkt->ticket.authorization_data->val[i].ad_type !=
354 KRB5_AUTHDATA_IF_RELEVANT) {
355 DEBUG(10,("get_auth_data_from_tkt: ad_type is %d\n",
356 tkt->ticket.authorization_data->val[i].ad_type));
360 auth_data_wrapped = data_blob(tkt->ticket.authorization_data->val[i].ad_data.data,
361 tkt->ticket.authorization_data->val[i].ad_data.length);
363 /* check if it is a PAC */
364 got_auth_data_pac = unwrap_pac(mem_ctx, &auth_data_wrapped, auth_data);
365 data_blob_free(&auth_data_wrapped);
367 if (!got_auth_data_pac) {
372 return got_auth_data_pac;
378 krb5_const_principal get_principal_from_tkt(krb5_ticket *tkt)
380 #if defined(HAVE_KRB5_TKT_ENC_PART2)
381 return tkt->enc_part2->client;
387 #if !defined(HAVE_KRB5_LOCATE_KDC)
389 /* krb5_locate_kdc is an internal MIT symbol. MIT are not yet willing to commit
390 * to a public interface for this functionality, so we have to be able to live
391 * without it if the MIT libraries are hiding their internal symbols.
394 #if defined(KRB5_KRBHST_INIT)
396 krb5_error_code krb5_locate_kdc(krb5_context ctx, const krb5_data *realm, struct sockaddr **addr_pp, int *naddrs, int get_masters)
398 krb5_krbhst_handle hnd;
399 krb5_krbhst_info *hinfo;
408 rc = krb5_krbhst_init(ctx, realm->data, KRB5_KRBHST_KDC, &hnd);
410 DEBUG(0, ("krb5_locate_kdc: krb5_krbhst_init failed (%s)\n", error_message(rc)));
414 for ( num_kdcs = 0; (rc = krb5_krbhst_next(ctx, hnd, &hinfo) == 0); num_kdcs++)
417 krb5_krbhst_reset(ctx, hnd);
420 DEBUG(0, ("krb5_locate_kdc: zero kdcs found !\n"));
421 krb5_krbhst_free(ctx, hnd);
425 sa = SMB_MALLOC_ARRAY( struct sockaddr, num_kdcs );
427 DEBUG(0, ("krb5_locate_kdc: malloc failed\n"));
428 krb5_krbhst_free(ctx, hnd);
433 memset(sa, '\0', sizeof(struct sockaddr) * num_kdcs );
435 for (i = 0; i < num_kdcs && (rc = krb5_krbhst_next(ctx, hnd, &hinfo) == 0); i++) {
437 #if defined(HAVE_KRB5_KRBHST_GET_ADDRINFO)
438 rc = krb5_krbhst_get_addrinfo(ctx, hinfo, &ai);
440 DEBUG(0,("krb5_krbhst_get_addrinfo failed: %s\n", error_message(rc)));
444 if (hinfo->ai && hinfo->ai->ai_family == AF_INET)
445 memcpy(&sa[i], hinfo->ai->ai_addr, sizeof(struct sockaddr));
448 krb5_krbhst_free(ctx, hnd);
455 #else /* ! defined(KRB5_KRBHST_INIT) */
457 krb5_error_code krb5_locate_kdc(krb5_context ctx, const krb5_data *realm,
458 struct sockaddr **addr_pp, int *naddrs, int get_masters)
460 DEBUG(0, ("unable to explicitly locate the KDC on this platform\n"));
461 return KRB5_KDC_UNREACH;
464 #endif /* KRB5_KRBHST_INIT */
466 #endif /* HAVE_KRB5_LOCATE_KDC */
468 #if !defined(HAVE_KRB5_FREE_UNPARSED_NAME)
469 void krb5_free_unparsed_name(krb5_context context, char *val)
475 void kerberos_free_data_contents(krb5_context context, krb5_data *pdata)
477 #if defined(HAVE_KRB5_FREE_DATA_CONTENTS)
479 krb5_free_data_contents(context, pdata);
482 SAFE_FREE(pdata->data);
486 void kerberos_set_creds_enctype(krb5_creds *pcreds, int enctype)
488 #if defined(HAVE_KRB5_KEYBLOCK_IN_CREDS)
489 KRB5_KEY_TYPE((&pcreds->keyblock)) = enctype;
490 #elif defined(HAVE_KRB5_SESSION_IN_CREDS)
491 KRB5_KEY_TYPE((&pcreds->session)) = enctype;
493 #error UNKNOWN_KEYBLOCK_MEMBER_IN_KRB5_CREDS_STRUCT
497 BOOL kerberos_compatible_enctypes(krb5_context context,
498 krb5_enctype enctype1,
499 krb5_enctype enctype2)
501 #if defined(HAVE_KRB5_C_ENCTYPE_COMPARE)
502 krb5_boolean similar = 0;
504 krb5_c_enctype_compare(context, enctype1, enctype2, &similar);
505 return similar ? True : False;
506 #elif defined(HAVE_KRB5_ENCTYPES_COMPATIBLE_KEYS)
507 return krb5_enctypes_compatible_keys(context, enctype1, enctype2) ? True : False;
511 static BOOL ads_cleanup_expired_creds(krb5_context context,
515 krb5_error_code retval;
516 const char *cc_type = krb5_cc_get_type(context, ccache);
518 DEBUG(3, ("ads_cleanup_expired_creds: Ticket in ccache[%s:%s] expiration %s\n",
519 cc_type, krb5_cc_get_name(context, ccache),
520 http_timestring(credsp->times.endtime)));
522 /* we will probably need new tickets if the current ones
523 will expire within 10 seconds.
525 if (credsp->times.endtime >= (time(NULL) + 10))
528 /* heimdal won't remove creds from a file ccache, and
529 perhaps we shouldn't anyway, since internally we
530 use memory ccaches, and a FILE one probably means that
531 we're using creds obtained outside of our exectuable
533 if (strequal(cc_type, "FILE")) {
534 DEBUG(5, ("ads_cleanup_expired_creds: We do not remove creds from a %s ccache\n", cc_type));
538 retval = krb5_cc_remove_cred(context, ccache, 0, credsp);
540 DEBUG(1, ("ads_cleanup_expired_creds: krb5_cc_remove_cred failed, err %s\n",
541 error_message(retval)));
542 /* If we have an error in this, we want to display it,
543 but continue as though we deleted it */
549 we can't use krb5_mk_req because w2k wants the service to be in a particular format
551 static krb5_error_code ads_krb5_mk_req(krb5_context context,
552 krb5_auth_context *auth_context,
553 const krb5_flags ap_req_options,
554 const char *principal,
559 krb5_error_code retval;
560 krb5_principal server;
564 BOOL creds_ready = False;
565 int i = 0, maxtries = 3;
567 retval = smb_krb5_parse_name(context, principal, &server);
569 DEBUG(1,("ads_krb5_mk_req: Failed to parse principal %s\n", principal));
573 /* obtain ticket & session key */
575 if ((retval = krb5_copy_principal(context, server, &creds.server))) {
576 DEBUG(1,("ads_krb5_mk_req: krb5_copy_principal failed (%s)\n",
577 error_message(retval)));
581 if ((retval = krb5_cc_get_principal(context, ccache, &creds.client))) {
582 /* This can commonly fail on smbd startup with no ticket in the cache.
583 * Report at higher level than 1. */
584 DEBUG(3,("ads_krb5_mk_req: krb5_cc_get_principal failed (%s)\n",
585 error_message(retval)));
589 while (!creds_ready && (i < maxtries)) {
591 if ((retval = krb5_get_credentials(context, 0, ccache,
593 DEBUG(1,("ads_krb5_mk_req: krb5_get_credentials failed for %s (%s)\n",
594 principal, error_message(retval)));
598 /* cope with ticket being in the future due to clock skew */
599 if ((unsigned)credsp->times.starttime > time(NULL)) {
600 time_t t = time(NULL);
601 int time_offset =(int)((unsigned)credsp->times.starttime-t);
602 DEBUG(4,("ads_krb5_mk_req: Advancing clock by %d seconds to cope with clock skew\n", time_offset));
603 krb5_set_real_time(context, t + time_offset + 1, 0);
606 if (!ads_cleanup_expired_creds(context, ccache, credsp)) {
613 DEBUG(10,("ads_krb5_mk_req: Ticket (%s) in ccache (%s:%s) is valid until: (%s - %u)\n",
614 principal, krb5_cc_get_type(context, ccache), krb5_cc_get_name(context, ccache),
615 http_timestring((unsigned)credsp->times.endtime),
616 (unsigned)credsp->times.endtime));
619 *expire_time = (time_t)credsp->times.endtime;
623 retval = krb5_mk_req_extended(context, auth_context, ap_req_options,
624 &in_data, credsp, outbuf);
626 DEBUG(1,("ads_krb5_mk_req: krb5_mk_req_extended failed (%s)\n",
627 error_message(retval)));
630 krb5_free_creds(context, credsp);
633 krb5_free_cred_contents(context, &creds);
636 krb5_free_principal(context, server);
642 get a kerberos5 ticket for the given service
644 int cli_krb5_get_ticket(const char *principal, time_t time_offset,
645 DATA_BLOB *ticket, DATA_BLOB *session_key_krb5,
646 uint32 extra_ap_opts, const char *ccname,
650 krb5_error_code retval;
652 krb5_context context = NULL;
653 krb5_ccache ccdef = NULL;
654 krb5_auth_context auth_context = NULL;
655 krb5_enctype enc_types[] = {
656 #ifdef ENCTYPE_ARCFOUR_HMAC
657 ENCTYPE_ARCFOUR_HMAC,
663 initialize_krb5_error_table();
664 retval = krb5_init_context(&context);
666 DEBUG(1,("cli_krb5_get_ticket: krb5_init_context failed (%s)\n",
667 error_message(retval)));
671 if (time_offset != 0) {
672 krb5_set_real_time(context, time(NULL) + time_offset, 0);
675 if ((retval = krb5_cc_resolve(context, ccname ?
676 ccname : krb5_cc_default_name(context), &ccdef))) {
677 DEBUG(1,("cli_krb5_get_ticket: krb5_cc_default failed (%s)\n",
678 error_message(retval)));
682 if ((retval = krb5_set_default_tgs_ktypes(context, enc_types))) {
683 DEBUG(1,("cli_krb5_get_ticket: krb5_set_default_tgs_ktypes failed (%s)\n",
684 error_message(retval)));
688 if ((retval = ads_krb5_mk_req(context,
690 AP_OPTS_USE_SUBKEY | (krb5_flags)extra_ap_opts,
697 get_krb5_smb_session_key(context, auth_context, session_key_krb5, False);
699 *ticket = data_blob(packet.data, packet.length);
701 kerberos_free_data_contents(context, &packet);
707 krb5_cc_close(context, ccdef);
709 krb5_auth_con_free(context, auth_context);
710 krb5_free_context(context);
716 BOOL get_krb5_smb_session_key(krb5_context context, krb5_auth_context auth_context, DATA_BLOB *session_key, BOOL remote)
723 err = krb5_auth_con_getremotesubkey(context, auth_context, &skey);
725 err = krb5_auth_con_getlocalsubkey(context, auth_context, &skey);
726 if (err == 0 && skey != NULL) {
727 DEBUG(10, ("Got KRB5 session key of length %d\n", (int)KRB5_KEY_LENGTH(skey)));
728 *session_key = data_blob(KRB5_KEY_DATA(skey), KRB5_KEY_LENGTH(skey));
729 dump_data_pw("KRB5 Session Key:\n", session_key->data, session_key->length);
733 krb5_free_keyblock(context, skey);
735 DEBUG(10, ("KRB5 error getting session key %d\n", err));
742 #if defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING) && !defined(HAVE_KRB5_PRINC_COMPONENT)
743 const krb5_data *krb5_princ_component(krb5_context context, krb5_principal principal, int i );
745 const krb5_data *krb5_princ_component(krb5_context context, krb5_principal principal, int i )
747 static krb5_data kdata;
749 kdata.data = (char *)krb5_principal_get_comp_string(context, principal, i);
750 kdata.length = strlen((const char *)kdata.data);
755 krb5_error_code smb_krb5_kt_free_entry(krb5_context context, krb5_keytab_entry *kt_entry)
757 #if defined(HAVE_KRB5_KT_FREE_ENTRY)
758 return krb5_kt_free_entry(context, kt_entry);
759 #elif defined(HAVE_KRB5_FREE_KEYTAB_ENTRY_CONTENTS)
760 return krb5_free_keytab_entry_contents(context, kt_entry);
762 #error UNKNOWN_KT_FREE_FUNCTION
766 void smb_krb5_checksum_from_pac_sig(krb5_checksum *cksum,
767 PAC_SIGNATURE_DATA *sig)
769 #ifdef HAVE_CHECKSUM_IN_KRB5_CHECKSUM
770 cksum->cksumtype = (krb5_cksumtype)sig->type;
771 cksum->checksum.length = sig->signature.buf_len;
772 cksum->checksum.data = sig->signature.buffer;
774 cksum->checksum_type = (krb5_cksumtype)sig->type;
775 cksum->length = sig->signature.buf_len;
776 cksum->contents = sig->signature.buffer;
780 krb5_error_code smb_krb5_verify_checksum(krb5_context context,
781 krb5_keyblock *keyblock,
783 krb5_checksum *cksum,
789 /* verify the checksum */
791 /* welcome to the wonderful world of samba's kerberos abstraction layer:
793 * function heimdal 0.6.1rc3 heimdal 0.7 MIT krb 1.4.2
794 * -----------------------------------------------------------------------------
795 * krb5_c_verify_checksum - works works
796 * krb5_verify_checksum works (6 args) works (6 args) broken (7 args)
799 #if defined(HAVE_KRB5_C_VERIFY_CHECKSUM)
801 krb5_boolean checksum_valid = False;
804 input.data = (char *)data;
805 input.length = length;
807 ret = krb5_c_verify_checksum(context,
814 DEBUG(3,("smb_krb5_verify_checksum: krb5_c_verify_checksum() failed: %s\n",
815 error_message(ret)));
820 ret = KRB5KRB_AP_ERR_BAD_INTEGRITY;
823 #elif KRB5_VERIFY_CHECKSUM_ARGS == 6 && defined(HAVE_KRB5_CRYPTO_INIT) && defined(HAVE_KRB5_CRYPTO) && defined(HAVE_KRB5_CRYPTO_DESTROY)
825 /* Warning: MIT's krb5_verify_checksum cannot be used as it will use a key
826 * without enctype and it ignores any key_usage types - Guenther */
831 ret = krb5_crypto_init(context,
836 DEBUG(0,("smb_krb5_verify_checksum: krb5_crypto_init() failed: %s\n",
837 error_message(ret)));
841 ret = krb5_verify_checksum(context,
848 krb5_crypto_destroy(context, crypto);
852 #error UNKNOWN_KRB5_VERIFY_CHECKSUM_FUNCTION
858 time_t get_authtime_from_tkt(krb5_ticket *tkt)
860 #if defined(HAVE_KRB5_TKT_ENC_PART2)
861 return tkt->enc_part2->times.authtime;
863 return tkt->ticket.authtime;
867 #ifdef HAVE_KRB5_DECODE_AP_REQ /* Heimdal */
868 static int get_kvno_from_ap_req(krb5_ap_req *ap_req)
870 #ifdef HAVE_TICKET_POINTER_IN_KRB5_AP_REQ /* MIT */
871 if (ap_req->ticket->enc_part.kvno)
872 return ap_req->ticket->enc_part.kvno;
874 if (ap_req->ticket.enc_part.kvno)
875 return *ap_req->ticket.enc_part.kvno;
880 static krb5_enctype get_enctype_from_ap_req(krb5_ap_req *ap_req)
882 #ifdef HAVE_ETYPE_IN_ENCRYPTEDDATA /* Heimdal */
883 return ap_req->ticket.enc_part.etype;
885 return ap_req->ticket->enc_part.enctype;
888 #endif /* HAVE_KRB5_DECODE_AP_REQ */
890 static krb5_error_code
891 get_key_from_keytab(krb5_context context,
892 krb5_const_principal server,
893 krb5_enctype enctype,
895 krb5_keyblock **out_key)
897 krb5_keytab_entry entry;
902 /* We have to open a new keytab handle here, as MIT does
903 an implicit open/getnext/close on krb5_kt_get_entry. We
904 may be in the middle of a keytab enumeration when this is
907 ret = krb5_kt_default(context, &keytab);
909 DEBUG(0,("get_key_from_keytab: failed to open keytab: %s\n", error_message(ret)));
913 if ( DEBUGLEVEL >= 10 ) {
914 if (smb_krb5_unparse_name(context, server, &name) == 0) {
915 DEBUG(10,("get_key_from_keytab: will look for kvno %d, enctype %d and name: %s\n",
916 kvno, enctype, name));
921 ret = krb5_kt_get_entry(context,
929 DEBUG(0,("get_key_from_keytab: failed to retrieve key: %s\n", error_message(ret)));
933 #ifdef HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK /* Heimdal */
934 ret = krb5_copy_keyblock(context, &entry.keyblock, out_key);
935 #elif defined(HAVE_KRB5_KEYTAB_ENTRY_KEY) /* MIT */
936 ret = krb5_copy_keyblock(context, &entry.key, out_key);
938 #error UNKNOWN_KRB5_KEYTAB_ENTRY_FORMAT
942 DEBUG(0,("get_key_from_keytab: failed to copy key: %s\n", error_message(ret)));
946 smb_krb5_kt_free_entry(context, &entry);
949 krb5_kt_close(context, keytab);
955 krb5_error_code smb_krb5_get_keyinfo_from_ap_req(krb5_context context,
956 const krb5_data *inbuf,
958 krb5_enctype *enctype)
960 #ifdef HAVE_KRB5_DECODE_AP_REQ /* Heimdal */
965 ret = krb5_decode_ap_req(context, inbuf, &ap_req);
969 *kvno = get_kvno_from_ap_req(&ap_req);
970 *enctype = get_enctype_from_ap_req(&ap_req);
972 free_AP_REQ(&ap_req);
977 /* Possibly not an appropriate error code. */
978 return KRB5KDC_ERR_BADOPTION;
981 krb5_error_code krb5_rd_req_return_keyblock_from_keytab(krb5_context context,
982 krb5_auth_context *auth_context,
983 const krb5_data *inbuf,
984 krb5_const_principal server,
986 krb5_flags *ap_req_options,
987 krb5_ticket **ticket,
988 krb5_keyblock **keyblock)
992 krb5_enctype enctype;
993 krb5_keyblock *local_keyblock;
995 ret = krb5_rd_req(context,
1006 #ifdef KRB5_TICKET_HAS_KEYINFO
1007 enctype = (*ticket)->enc_part.enctype;
1008 kvno = (*ticket)->enc_part.kvno;
1010 ret = smb_krb5_get_keyinfo_from_ap_req(context, inbuf, &kvno, &enctype);
1016 ret = get_key_from_keytab(context,
1022 DEBUG(0,("krb5_rd_req_return_keyblock_from_keytab: failed to call get_key_from_keytab\n"));
1027 if (ret && local_keyblock != NULL) {
1028 krb5_free_keyblock(context, local_keyblock);
1030 *keyblock = local_keyblock;
1036 krb5_error_code smb_krb5_parse_name_norealm(krb5_context context,
1038 krb5_principal *principal)
1040 #ifdef HAVE_KRB5_PARSE_NAME_NOREALM
1041 return smb_krb5_parse_name_norealm_conv(context, name, principal);
1044 /* we are cheating here because parse_name will in fact set the realm.
1045 * We don't care as the only caller of smb_krb5_parse_name_norealm
1046 * ignores the realm anyway when calling
1047 * smb_krb5_principal_compare_any_realm later - Guenther */
1049 return smb_krb5_parse_name(context, name, principal);
1052 BOOL smb_krb5_principal_compare_any_realm(krb5_context context,
1053 krb5_const_principal princ1,
1054 krb5_const_principal princ2)
1056 #ifdef HAVE_KRB5_PRINCIPAL_COMPARE_ANY_REALM
1058 return krb5_principal_compare_any_realm(context, princ1, princ2);
1060 /* krb5_princ_size is a macro in MIT */
1061 #elif defined(HAVE_KRB5_PRINC_SIZE) || defined(krb5_princ_size)
1064 const krb5_data *p1, *p2;
1066 len1 = krb5_princ_size(context, princ1);
1067 len2 = krb5_princ_size(context, princ2);
1072 for (i = 0; i < len1; i++) {
1074 p1 = krb5_princ_component(context, CONST_DISCARD(krb5_principal, princ1), i);
1075 p2 = krb5_princ_component(context, CONST_DISCARD(krb5_principal, princ2), i);
1077 if (p1->length != p2->length || memcmp(p1->data, p2->data, p1->length))
1083 #error NO_SUITABLE_PRINCIPAL_COMPARE_FUNCTION
1087 krb5_error_code smb_krb5_renew_ticket(const char *ccache_string, /* FILE:/tmp/krb5cc_0 */
1088 const char *client_string, /* gd@BER.SUSE.DE */
1089 const char *service_string, /* krbtgt/BER.SUSE.DE@BER.SUSE.DE */
1090 time_t *new_start_time)
1092 krb5_error_code ret;
1093 krb5_context context = NULL;
1094 krb5_ccache ccache = NULL;
1095 krb5_principal client = NULL;
1097 initialize_krb5_error_table();
1098 ret = krb5_init_context(&context);
1103 if (!ccache_string) {
1104 ccache_string = krb5_cc_default_name(context);
1107 DEBUG(10,("smb_krb5_renew_ticket: using %s as ccache\n", ccache_string));
1109 /* FIXME: we should not fall back to defaults */
1110 ret = krb5_cc_resolve(context, CONST_DISCARD(char *, ccache_string), &ccache);
1115 #ifdef HAVE_KRB5_GET_RENEWED_CREDS /* MIT */
1119 if (client_string) {
1120 ret = smb_krb5_parse_name(context, client_string, &client);
1125 ret = krb5_cc_get_principal(context, ccache, &client);
1131 ret = krb5_get_renewed_creds(context, &creds, client, ccache, CONST_DISCARD(char *, service_string));
1133 DEBUG(10,("smb_krb5_renew_ticket: krb5_get_kdc_cred failed: %s\n", error_message(ret)));
1137 /* hm, doesn't that create a new one if the old one wasn't there? - Guenther */
1138 ret = krb5_cc_initialize(context, ccache, client);
1143 ret = krb5_cc_store_cred(context, ccache, &creds);
1145 if (new_start_time) {
1146 *new_start_time = (time_t) creds.times.renew_till;
1149 krb5_free_cred_contents(context, &creds);
1151 #elif defined(HAVE_KRB5_GET_KDC_CRED) /* Heimdal */
1153 krb5_kdc_flags flags;
1154 krb5_creds creds_in;
1155 krb5_realm *client_realm;
1158 memset(&creds_in, 0, sizeof(creds_in));
1160 if (client_string) {
1161 ret = smb_krb5_parse_name(context, client_string, &creds_in.client);
1166 ret = krb5_cc_get_principal(context, ccache, &creds_in.client);
1172 if (service_string) {
1173 ret = smb_krb5_parse_name(context, service_string, &creds_in.server);
1178 /* build tgt service by default */
1179 client_realm = krb5_princ_realm(context, client);
1180 ret = krb5_make_principal(context, &creds_in.server, *client_realm, KRB5_TGS_NAME, *client_realm, NULL);
1187 flags.b.renewable = flags.b.renew = True;
1189 ret = krb5_get_kdc_cred(context, ccache, flags, NULL, NULL, &creds_in, &creds);
1191 DEBUG(10,("smb_krb5_renew_ticket: krb5_get_kdc_cred failed: %s\n", error_message(ret)));
1195 /* hm, doesn't that create a new one if the old one wasn't there? - Guenther */
1196 ret = krb5_cc_initialize(context, ccache, creds_in.client);
1201 ret = krb5_cc_store_cred(context, ccache, creds);
1203 if (new_start_time) {
1204 *new_start_time = (time_t) creds->times.renew_till;
1207 krb5_free_cred_contents(context, &creds_in);
1208 krb5_free_creds(context, creds);
1211 #error No suitable krb5 ticket renew function available
1217 krb5_free_principal(context, client);
1220 krb5_free_context(context);
1223 krb5_cc_close(context, ccache);
1230 krb5_error_code smb_krb5_free_addresses(krb5_context context, smb_krb5_addresses *addr)
1232 krb5_error_code ret = 0;
1236 #if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
1237 krb5_free_addresses(context, addr->addrs);
1238 #elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
1239 ret = krb5_free_addresses(context, addr->addrs);
1240 SAFE_FREE(addr->addrs);
1247 krb5_error_code smb_krb5_gen_netbios_krb5_address(smb_krb5_addresses **kerb_addr)
1249 krb5_error_code ret = 0;
1251 #if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
1252 krb5_address **addrs = NULL;
1253 #elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
1254 krb5_addresses *addrs = NULL;
1257 *kerb_addr = (smb_krb5_addresses *)SMB_MALLOC(sizeof(smb_krb5_addresses));
1258 if (*kerb_addr == NULL) {
1262 put_name(buf, global_myname(), ' ', 0x20);
1264 #if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
1268 addrs = (krb5_address **)SMB_MALLOC(sizeof(krb5_address *) * num_addr);
1269 if (addrs == NULL) {
1270 SAFE_FREE(kerb_addr);
1274 memset(addrs, 0, sizeof(krb5_address *) * num_addr);
1276 addrs[0] = (krb5_address *)SMB_MALLOC(sizeof(krb5_address));
1277 if (addrs[0] == NULL) {
1279 SAFE_FREE(kerb_addr);
1283 addrs[0]->magic = KV5M_ADDRESS;
1284 addrs[0]->addrtype = KRB5_ADDR_NETBIOS;
1285 addrs[0]->length = MAX_NETBIOSNAME_LEN;
1286 addrs[0]->contents = (unsigned char *)SMB_MALLOC(addrs[0]->length);
1287 if (addrs[0]->contents == NULL) {
1288 SAFE_FREE(addrs[0]);
1290 SAFE_FREE(kerb_addr);
1294 memcpy(addrs[0]->contents, buf, addrs[0]->length);
1298 #elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
1300 addrs = (krb5_addresses *)SMB_MALLOC(sizeof(krb5_addresses));
1301 if (addrs == NULL) {
1302 SAFE_FREE(kerb_addr);
1306 memset(addrs, 0, sizeof(krb5_addresses));
1309 addrs->val = (krb5_address *)SMB_MALLOC(sizeof(krb5_address));
1310 if (addrs->val == NULL) {
1312 SAFE_FREE(kerb_addr);
1316 addrs->val[0].addr_type = KRB5_ADDR_NETBIOS;
1317 addrs->val[0].address.length = MAX_NETBIOSNAME_LEN;
1318 addrs->val[0].address.data = (unsigned char *)SMB_MALLOC(addrs->val[0].address.length);
1319 if (addrs->val[0].address.data == NULL) {
1320 SAFE_FREE(addrs->val);
1322 SAFE_FREE(kerb_addr);
1326 memcpy(addrs->val[0].address.data, buf, addrs->val[0].address.length);
1329 #error UNKNOWN_KRB5_ADDRESS_FORMAT
1331 (*kerb_addr)->addrs = addrs;
1336 void smb_krb5_free_error(krb5_context context, krb5_error *krberror)
1338 #ifdef HAVE_KRB5_FREE_ERROR_CONTENTS /* Heimdal */
1339 krb5_free_error_contents(context, krberror);
1341 krb5_free_error(context, krberror);
1345 krb5_error_code handle_krberror_packet(krb5_context context,
1348 krb5_error_code ret;
1349 BOOL got_error_code = False;
1351 DEBUG(10,("handle_krberror_packet: got error packet\n"));
1353 #ifdef HAVE_E_DATA_POINTER_IN_KRB5_ERROR /* Heimdal */
1355 krb5_error krberror;
1357 if ((ret = krb5_rd_error(context, packet, &krberror))) {
1358 DEBUG(10,("handle_krberror_packet: krb5_rd_error failed with: %s\n",
1359 error_message(ret)));
1363 if (krberror.e_data == NULL || krberror.e_data->data == NULL) {
1364 ret = (krb5_error_code) krberror.error_code;
1365 got_error_code = True;
1368 smb_krb5_free_error(context, &krberror);
1372 krb5_error *krberror;
1374 if ((ret = krb5_rd_error(context, packet, &krberror))) {
1375 DEBUG(10,("handle_krberror_packet: krb5_rd_error failed with: %s\n",
1376 error_message(ret)));
1380 if (krberror->e_data.data == NULL) {
1381 ret = ERROR_TABLE_BASE_krb5 + (krb5_error_code) krberror->error;
1382 got_error_code = True;
1384 smb_krb5_free_error(context, krberror);
1387 if (got_error_code) {
1388 DEBUG(5,("handle_krberror_packet: got KERBERR from kpasswd: %s (%d)\n",
1389 error_message(ret), ret));
1394 krb5_error_code smb_krb5_get_init_creds_opt_alloc(krb5_context context,
1395 krb5_get_init_creds_opt **opt)
1397 #ifdef HAVE_KRB5_GET_INIT_CREDS_OPT_ALLOC
1398 /* Heimdal or modern MIT version */
1399 return krb5_get_init_creds_opt_alloc(context, opt);
1401 /* Historical MIT version */
1402 krb5_get_init_creds_opt *my_opt;
1406 if ((my_opt = SMB_MALLOC(sizeof(krb5_get_init_creds_opt))) == NULL) {
1410 krb5_get_init_creds_opt_init(my_opt);
1414 #endif /* HAVE_KRB5_GET_INIT_CREDS_OPT_ALLOC */
1417 void smb_krb5_get_init_creds_opt_free(krb5_context context,
1418 krb5_get_init_creds_opt *opt)
1420 #ifdef HAVE_KRB5_GET_INIT_CREDS_OPT_FREE
1422 #ifdef KRB5_CREDS_OPT_FREE_REQUIRES_CONTEXT
1423 /* Modern MIT version */
1424 krb5_get_init_creds_opt_free(context, opt);
1426 /* Heimdal version */
1427 krb5_get_init_creds_opt_free(opt);
1430 #else /* HAVE_KRB5_GET_INIT_CREDS_OPT_FREE */
1431 /* Historical MIT version */
1434 #endif /* HAVE_KRB5_GET_INIT_CREDS_OPT_FREE */
1437 krb5_error_code smb_krb5_mk_error(krb5_context context,
1438 krb5_error_code error_code,
1439 const krb5_principal server,
1442 #ifdef HAVE_SHORT_KRB5_MK_ERROR_INTERFACE /* MIT */
1444 * The MIT interface is *terrible*.
1445 * We have to construct this ourselves...
1449 memset(&e, 0, sizeof(e));
1450 krb5_us_timeofday(context, &e.stime, &e.susec);
1452 e.error = error_code - krb5_err_base;
1454 return krb5_mk_error(context, &e, reply);
1455 #else /* Heimdal. */
1456 return krb5_mk_error(context,
1468 #else /* HAVE_KRB5 */
1469 /* this saves a few linking headaches */
1470 int cli_krb5_get_ticket(const char *principal, time_t time_offset,
1471 DATA_BLOB *ticket, DATA_BLOB *session_key_krb5, uint32 extra_ap_opts,
1472 const char *ccname, time_t *tgs_expire)
1474 DEBUG(0,("NO KERBEROS SUPPORT\n"));