2 Unix SMB/CIFS implementation.
3 kerberos authorization data (PAC) utility library
4 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
5 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
6 Copyright (C) Andrew Tridgell 2001
7 Copyright (C) Luke Howard 2002-2003
8 Copyright (C) Stefan Metzmacher 2004-2005
9 Copyright (C) Guenther Deschner 2005
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>.
29 static BOOL pac_io_logon_name(const char *desc, PAC_LOGON_NAME *logon_name,
30 prs_struct *ps, int depth)
32 if (NULL == logon_name)
35 prs_debug(ps, depth, desc, "pac_io_logon_name");
38 if (!smb_io_time("logon_time", &logon_name->logon_time, ps, depth))
41 if (!prs_uint16("len", ps, depth, &logon_name->len))
44 /* The following string is always in little endian 16 bit values,
45 copy as 8 bits to avoid endian reversal on big-endian machines.
46 len is the length in bytes. */
48 if (UNMARSHALLING(ps) && logon_name->len) {
49 logon_name->username = PRS_ALLOC_MEM(ps, uint8, logon_name->len);
50 if (!logon_name->username) {
51 DEBUG(3, ("No memory available\n"));
56 if (!prs_uint8s(True, "name", ps, depth, logon_name->username, logon_name->len))
62 #if 0 /* Unused (handled now in net_io_user_info3()) - Guenther */
63 static BOOL pac_io_krb_sids(const char *desc, KRB_SID_AND_ATTRS *sid_and_attr,
64 prs_struct *ps, int depth)
66 if (NULL == sid_and_attr)
69 prs_debug(ps, depth, desc, "pac_io_krb_sids");
72 if (UNMARSHALLING(ps)) {
73 sid_and_attr->sid = PRS_ALLOC_MEM(ps, DOM_SID2, 1);
74 if (!sid_and_attr->sid) {
75 DEBUG(3, ("No memory available\n"));
80 if(!smb_io_dom_sid2("sid", sid_and_attr->sid, ps, depth))
87 static BOOL pac_io_krb_attrs(const char *desc, KRB_SID_AND_ATTRS *sid_and_attr,
88 prs_struct *ps, int depth)
90 if (NULL == sid_and_attr)
93 prs_debug(ps, depth, desc, "pac_io_krb_attrs");
96 if (!prs_uint32("sid_ptr", ps, depth, &sid_and_attr->sid_ptr))
98 if (!prs_uint32("attrs", ps, depth, &sid_and_attr->attrs))
104 static BOOL pac_io_krb_sid_and_attr_array(const char *desc,
105 KRB_SID_AND_ATTR_ARRAY *array,
107 prs_struct *ps, int depth)
114 prs_debug(ps, depth, desc, "pac_io_krb_sid_and_attr_array");
118 if (!prs_uint32("count", ps, depth, &array->count))
121 if (UNMARSHALLING(ps)) {
123 array->krb_sid_and_attrs = PRS_ALLOC_MEM(ps, KRB_SID_AND_ATTRS, num);
124 if (!array->krb_sid_and_attrs) {
125 DEBUG(3, ("No memory available\n"));
129 array->krb_sid_and_attrs = NULL;
133 for (i=0; i<num; i++) {
134 if (!pac_io_krb_attrs(desc,
135 &array->krb_sid_and_attrs[i],
140 for (i=0; i<num; i++) {
141 if (!pac_io_krb_sids(desc,
142 &array->krb_sid_and_attrs[i],
153 static BOOL pac_io_group_membership(const char *desc,
154 GROUP_MEMBERSHIP *membership,
155 prs_struct *ps, int depth)
157 if (NULL == membership)
160 prs_debug(ps, depth, desc, "pac_io_group_membership");
163 if (!prs_uint32("rid", ps, depth, &membership->rid))
165 if (!prs_uint32("attrs", ps, depth, &membership->attrs))
172 static BOOL pac_io_group_membership_array(const char *desc,
173 GROUP_MEMBERSHIP_ARRAY *array,
175 prs_struct *ps, int depth)
182 prs_debug(ps, depth, desc, "pac_io_group_membership_array");
186 if (!prs_uint32("count", ps, depth, &array->count))
189 if (UNMARSHALLING(ps)) {
191 array->group_membership = PRS_ALLOC_MEM(ps, GROUP_MEMBERSHIP, num);
192 if (!array->group_membership) {
193 DEBUG(3, ("No memory available\n"));
197 array->group_membership = NULL;
201 for (i=0; i<num; i++) {
202 if (!pac_io_group_membership(desc,
203 &array->group_membership[i],
213 #if 0 /* Unused, replaced using an expanded net_io_user_info3() now - Guenther */
214 static BOOL pac_io_pac_logon_info(const char *desc, PAC_LOGON_INFO *info,
215 prs_struct *ps, int depth)
222 prs_debug(ps, depth, desc, "pac_io_pac_logon_info");
227 if (!prs_uint32("unknown", ps, depth, &garbage)) /* 00081001 */
229 if (!prs_uint32("unknown", ps, depth, &garbage)) /* cccccccc */
231 if (!prs_uint32("bufferlen", ps, depth, &garbage))
233 if (!prs_uint32("bufferlenhi", ps, depth, &garbage)) /* 00000000 */
236 if (!prs_uint32("pointer", ps, depth, &garbage))
241 if (!smb_io_time("logon_time", &info->logon_time, ps, depth))
243 if (!smb_io_time("logoff_time", &info->logoff_time, ps, depth))
245 if (!smb_io_time("kickoff_time", &info->kickoff_time, ps, depth))
247 if (!smb_io_time("pass_last_set_time", &info->pass_last_set_time,
250 if (!smb_io_time("pass_can_change_time", &info->pass_can_change_time,
253 if (!smb_io_time("pass_must_change_time", &info->pass_must_change_time,
257 if (!smb_io_unihdr("hdr_user_name", &info->hdr_user_name, ps, depth))
259 if (!smb_io_unihdr("hdr_full_name", &info->hdr_full_name, ps, depth))
261 if (!smb_io_unihdr("hdr_logon_script", &info->hdr_logon_script,
264 if (!smb_io_unihdr("hdr_profile_path", &info->hdr_profile_path,
267 if (!smb_io_unihdr("hdr_home_dir", &info->hdr_home_dir, ps, depth))
269 if (!smb_io_unihdr("hdr_dir_drive", &info->hdr_dir_drive, ps, depth))
272 if (!prs_uint16("logon_count", ps, depth, &info->logon_count))
274 if (!prs_uint16("bad_password_count", ps, depth, &info->bad_password_count))
276 if (!prs_uint32("user_rid", ps, depth, &info->user_rid))
278 if (!prs_uint32("group_rid", ps, depth, &info->group_rid))
280 if (!prs_uint32("group_count", ps, depth, &info->group_count))
282 /* I haven't seen this contain anything yet, but when it does
283 we will have to make sure we decode the contents in the middle
284 all the unistr2s ... */
285 if (!prs_uint32("group_mem_ptr", ps, depth,
286 &info->group_membership_ptr))
288 if (!prs_uint32("user_flags", ps, depth, &info->user_flags))
291 if (!prs_uint8s(False, "session_key", ps, depth, info->session_key, 16))
294 if (!smb_io_unihdr("hdr_dom_controller",
295 &info->hdr_dom_controller, ps, depth))
297 if (!smb_io_unihdr("hdr_dom_name", &info->hdr_dom_name, ps, depth))
300 /* this should be followed, but just get ptr for now */
301 if (!prs_uint32("ptr_dom_sid", ps, depth, &info->ptr_dom_sid))
304 if (!prs_uint8s(False, "lm_session_key", ps, depth, info->lm_session_key, 8))
307 if (!prs_uint32("acct_flags", ps, depth, &info->acct_flags))
310 for (i = 0; i < 7; i++)
312 if (!prs_uint32("unkown", ps, depth, &info->unknown[i])) /* unknown */
316 if (!prs_uint32("sid_count", ps, depth, &info->sid_count))
318 if (!prs_uint32("ptr_extra_sids", ps, depth, &info->ptr_extra_sids))
320 if (!prs_uint32("ptr_res_group_dom_sid", ps, depth,
321 &info->ptr_res_group_dom_sid))
323 if (!prs_uint32("res_group_count", ps, depth, &info->res_group_count))
325 if (!prs_uint32("ptr_res_groups", ps, depth, &info->ptr_res_groups))
328 if(!smb_io_unistr2("uni_user_name", &info->uni_user_name,
329 info->hdr_user_name.buffer, ps, depth))
331 if(!smb_io_unistr2("uni_full_name", &info->uni_full_name,
332 info->hdr_full_name.buffer, ps, depth))
334 if(!smb_io_unistr2("uni_logon_script", &info->uni_logon_script,
335 info->hdr_logon_script.buffer, ps, depth))
337 if(!smb_io_unistr2("uni_profile_path", &info->uni_profile_path,
338 info->hdr_profile_path.buffer, ps, depth))
340 if(!smb_io_unistr2("uni_home_dir", &info->uni_home_dir,
341 info->hdr_home_dir.buffer, ps, depth))
343 if(!smb_io_unistr2("uni_dir_drive", &info->uni_dir_drive,
344 info->hdr_dir_drive.buffer, ps, depth))
347 if (info->group_membership_ptr) {
348 if (!pac_io_group_membership_array("group membership",
356 if(!smb_io_unistr2("uni_dom_controller", &info->uni_dom_controller,
357 info->hdr_dom_controller.buffer, ps, depth))
359 if(!smb_io_unistr2("uni_dom_name", &info->uni_dom_name,
360 info->hdr_dom_name.buffer, ps, depth))
363 if(info->ptr_dom_sid)
364 if(!smb_io_dom_sid2("dom_sid", &info->dom_sid, ps, depth))
368 if (info->sid_count && info->ptr_extra_sids)
369 if (!pac_io_krb_sid_and_attr_array("extra_sids",
375 if (info->ptr_res_group_dom_sid)
376 if (!smb_io_dom_sid2("res_group_dom_sid",
377 &info->res_group_dom_sid, ps, depth))
380 if (info->ptr_res_groups) {
382 if (!(info->user_flgs & LOGON_RESOURCE_GROUPS)) {
383 DEBUG(0,("user_flgs attribute does not have LOGON_RESOURCE_GROUPS\n"));
387 if (!pac_io_group_membership_array("res group membership",
389 info->res_group_count,
398 static BOOL pac_io_pac_logon_info(const char *desc, PAC_LOGON_INFO *info,
399 prs_struct *ps, int depth)
402 BOOL kerb_validation_info = True;
407 prs_debug(ps, depth, desc, "pac_io_pac_logon_info");
412 if (!prs_uint32("unknown", ps, depth, &garbage)) /* 00081001 */
414 if (!prs_uint32("unknown", ps, depth, &garbage)) /* cccccccc */
416 if (!prs_uint32("bufferlen", ps, depth, &garbage))
418 if (!prs_uint32("bufferlenhi", ps, depth, &garbage)) /* 00000000 */
421 if(!net_io_user_info3("", &info->info3, ps, depth, 3, kerb_validation_info))
424 if (info->info3.ptr_res_group_dom_sid) {
425 if (!smb_io_dom_sid2("res_group_dom_sid",
426 &info->res_group_dom_sid, ps, depth))
430 if (info->info3.ptr_res_groups) {
432 if (!(info->info3.user_flgs & LOGON_RESOURCE_GROUPS)) {
433 DEBUG(0,("user_flgs attribute does not have LOGON_RESOURCE_GROUPS\n"));
437 if (!pac_io_group_membership_array("res group membership",
439 info->info3.res_group_count,
449 static BOOL pac_io_pac_signature_data(const char *desc,
450 PAC_SIGNATURE_DATA *data, uint32 length,
451 prs_struct *ps, int depth)
455 prs_debug(ps, depth, desc, "pac_io_pac_signature_data");
463 if (!prs_uint32("type", ps, depth, &data->type))
466 if ( length > sizeof(uint32) )
467 siglen = length - sizeof(uint32);
469 if (UNMARSHALLING(ps) && length) {
471 data->signature.buffer = PRS_ALLOC_MEM(ps, uint8, siglen);
472 if (!data->signature.buffer) {
473 DEBUG(3, ("No memory available\n"));
477 data->signature.buffer = NULL;
481 data->signature.buf_len = siglen;
483 if (!prs_uint8s(False, "signature", ps, depth, data->signature.buffer, data->signature.buf_len))
490 static BOOL pac_io_pac_info_hdr_ctr(const char *desc, PAC_BUFFER *hdr,
491 prs_struct *ps, int depth)
496 prs_debug(ps, depth, desc, "pac_io_pac_info_hdr_ctr");
502 if (hdr->offset != prs_offset(ps)) {
503 DEBUG(5,("offset in header(x%x) and data(x%x) do not match, correcting\n",
504 hdr->offset, prs_offset(ps)));
505 prs_set_offset(ps, hdr->offset);
508 if (UNMARSHALLING(ps) && hdr->size > 0) {
509 hdr->ctr = PRS_ALLOC_MEM(ps, PAC_INFO_CTR, 1);
511 DEBUG(3, ("No memory available\n"));
517 case PAC_TYPE_LOGON_INFO:
518 DEBUG(5, ("PAC_TYPE_LOGON_INFO\n"));
519 if (UNMARSHALLING(ps))
520 hdr->ctr->pac.logon_info = PRS_ALLOC_MEM(ps, PAC_LOGON_INFO, 1);
521 if (!hdr->ctr->pac.logon_info) {
522 DEBUG(3, ("No memory available\n"));
525 if (!pac_io_pac_logon_info(desc, hdr->ctr->pac.logon_info,
530 case PAC_TYPE_SERVER_CHECKSUM:
531 DEBUG(5, ("PAC_TYPE_SERVER_CHECKSUM\n"));
532 if (UNMARSHALLING(ps))
533 hdr->ctr->pac.srv_cksum = PRS_ALLOC_MEM(ps, PAC_SIGNATURE_DATA, 1);
534 if (!hdr->ctr->pac.srv_cksum) {
535 DEBUG(3, ("No memory available\n"));
538 if (!pac_io_pac_signature_data(desc, hdr->ctr->pac.srv_cksum,
539 hdr->size, ps, depth))
543 case PAC_TYPE_PRIVSVR_CHECKSUM:
544 DEBUG(5, ("PAC_TYPE_PRIVSVR_CHECKSUM\n"));
545 if (UNMARSHALLING(ps))
546 hdr->ctr->pac.privsrv_cksum = PRS_ALLOC_MEM(ps, PAC_SIGNATURE_DATA, 1);
547 if (!hdr->ctr->pac.privsrv_cksum) {
548 DEBUG(3, ("No memory available\n"));
551 if (!pac_io_pac_signature_data(desc,
552 hdr->ctr->pac.privsrv_cksum,
553 hdr->size, ps, depth))
557 case PAC_TYPE_LOGON_NAME:
558 DEBUG(5, ("PAC_TYPE_LOGON_NAME\n"));
559 if (UNMARSHALLING(ps))
560 hdr->ctr->pac.logon_name = PRS_ALLOC_MEM(ps, PAC_LOGON_NAME, 1);
561 if (!hdr->ctr->pac.logon_name) {
562 DEBUG(3, ("No memory available\n"));
565 if (!pac_io_logon_name(desc, hdr->ctr->pac.logon_name,
571 /* dont' know, so we need to skip it */
572 DEBUG(3, ("unknown PAC type %d\n", hdr->type));
573 prs_set_offset(ps, prs_offset(ps) + hdr->size);
578 if (!prs_uint32("pad", ps, depth, &hdr->pad))
584 static BOOL pac_io_pac_info_hdr(const char *desc, PAC_BUFFER *hdr,
585 prs_struct *ps, int depth)
590 prs_debug(ps, depth, desc, "pac_io_pac_info_hdr");
595 if (!prs_uint32("type", ps, depth, &hdr->type))
597 if (!prs_uint32("size", ps, depth, &hdr->size))
599 if (!prs_uint32("offset", ps, depth, &hdr->offset))
601 if (!prs_uint32("offsethi", ps, depth, &hdr->offsethi))
607 static BOOL pac_io_pac_data(const char *desc, PAC_DATA *data,
608 prs_struct *ps, int depth)
615 prs_debug(ps, depth, desc, "pac_io_pac_data");
620 if (!prs_uint32("num_buffers", ps, depth, &data->num_buffers))
622 if (!prs_uint32("version", ps, depth, &data->version))
625 if (UNMARSHALLING(ps) && data->num_buffers > 0) {
626 if ((data->pac_buffer = PRS_ALLOC_MEM(ps, PAC_BUFFER, data->num_buffers)) == NULL) {
631 for (i=0; i<data->num_buffers; i++) {
632 if (!pac_io_pac_info_hdr(desc, &data->pac_buffer[i], ps,
637 for (i=0; i<data->num_buffers; i++) {
638 if (!pac_io_pac_info_hdr_ctr(desc, &data->pac_buffer[i],
646 static NTSTATUS check_pac_checksum(TALLOC_CTX *mem_ctx,
648 PAC_SIGNATURE_DATA *sig,
649 krb5_context context,
650 krb5_keyblock *keyblock)
654 krb5_keyusage usage = 0;
656 smb_krb5_checksum_from_pac_sig(&cksum, sig);
658 #ifdef HAVE_KRB5_KU_OTHER_CKSUM /* Heimdal */
659 usage = KRB5_KU_OTHER_CKSUM;
660 #elif defined(HAVE_KRB5_KEYUSAGE_APP_DATA_CKSUM) /* MIT */
661 usage = KRB5_KEYUSAGE_APP_DATA_CKSUM;
663 #error UNKNOWN_KRB5_KEYUSAGE
666 ret = smb_krb5_verify_checksum(context,
674 DEBUG(2,("check_pac_checksum: PAC Verification failed: %s (%d)\n",
675 error_message(ret), ret));
676 return NT_STATUS_ACCESS_DENIED;
682 static NTSTATUS parse_pac_data(TALLOC_CTX *mem_ctx, DATA_BLOB *pac_data_blob, PAC_DATA *pac_data)
687 if (!prs_init(&ps, pac_data_blob->length, mem_ctx, UNMARSHALL))
688 return NT_STATUS_NO_MEMORY;
690 if (!prs_copy_data_in(&ps, (char *)pac_data_blob->data, pac_data_blob->length))
691 return NT_STATUS_INVALID_PARAMETER;
693 prs_set_offset(&ps, 0);
695 my_pac = TALLOC_ZERO_P(mem_ctx, PAC_DATA);
696 if (!pac_io_pac_data("pac data", my_pac, &ps, 0))
697 return NT_STATUS_INVALID_PARAMETER;
706 /* just for debugging, will be removed later - Guenther */
707 char *pac_group_attr_string(uint32 attr)
714 if (attr & SE_GROUP_MANDATORY) fstrcat(name, "SE_GROUP_MANDATORY ");
715 if (attr & SE_GROUP_ENABLED_BY_DEFAULT) fstrcat(name, "SE_GROUP_ENABLED_BY_DEFAULT ");
716 if (attr & SE_GROUP_ENABLED) fstrcat(name, "SE_GROUP_ENABLED ");
717 if (attr & SE_GROUP_OWNER) fstrcat(name, "SE_GROUP_OWNER ");
718 if (attr & SE_GROUP_USE_FOR_DENY_ONLY) fstrcat(name, "SE_GROUP_USE_FOR_DENY_ONLY ");
719 if (attr & SE_GROUP_LOGON_ID) fstrcat(name, "SE_GROUP_LOGON_ID ");
720 if (attr & SE_GROUP_RESOURCE) fstrcat(name, "SE_GROUP_RESOURCE ");
722 return SMB_STRDUP(name);
725 /* just for debugging, will be removed later - Guenther */
726 static void dump_pac_logon_info(PAC_LOGON_INFO *logon_info) {
728 DOM_SID dom_sid, res_group_dom_sid;
731 uint32 user_flgs = logon_info->info3.user_flgs;
733 if (logon_info->info3.ptr_res_group_dom_sid) {
734 sid_copy(&res_group_dom_sid, &logon_info->res_group_dom_sid.sid);
736 sid_copy(&dom_sid, &logon_info->info3.dom_sid.sid);
738 DEBUG(10,("The PAC:\n"));
740 DEBUGADD(10,("\tUser Flags: 0x%x (%d)\n", user_flgs, user_flgs));
741 if (user_flgs & LOGON_EXTRA_SIDS)
742 DEBUGADD(10,("\tUser Flags: LOGON_EXTRA_SIDS 0x%x (%d)\n", LOGON_EXTRA_SIDS, LOGON_EXTRA_SIDS));
743 if (user_flgs & LOGON_RESOURCE_GROUPS)
744 DEBUGADD(10,("\tUser Flags: LOGON_RESOURCE_GROUPS 0x%x (%d)\n", LOGON_RESOURCE_GROUPS, LOGON_RESOURCE_GROUPS));
745 DEBUGADD(10,("\tUser SID: %s-%d\n", sid_string_static(&dom_sid), logon_info->info3.user_rid));
746 DEBUGADD(10,("\tGroup SID: %s-%d\n", sid_string_static(&dom_sid), logon_info->info3.group_rid));
748 DEBUGADD(10,("\tGroup Membership (Global and Universal Groups of own domain):\n"));
749 for (i = 0; i < logon_info->info3.num_groups; i++) {
750 attr_string = pac_group_attr_string(logon_info->info3.gids[i].attr);
751 DEBUGADD(10,("\t\t%d: sid: %s-%d\n\t\t attr: 0x%x == %s\n",
752 i, sid_string_static(&dom_sid),
753 logon_info->info3.gids[i].g_rid,
754 logon_info->info3.gids[i].attr,
756 SAFE_FREE(attr_string);
759 DEBUGADD(10,("\tGroup Membership (Domain Local Groups and Groups from Trusted Domains):\n"));
760 for (i = 0; i < logon_info->info3.num_other_sids; i++) {
761 attr_string = pac_group_attr_string(logon_info->info3.other_sids_attrib[i]);
762 DEBUGADD(10,("\t\t%d: sid: %s\n\t\t attr: 0x%x == %s\n",
763 i, sid_string_static(&logon_info->info3.other_sids[i].sid),
764 logon_info->info3.other_sids_attrib[i],
766 SAFE_FREE(attr_string);
769 DEBUGADD(10,("\tGroup Membership (Ressource Groups (SID History ?)):\n"));
770 for (i = 0; i < logon_info->info3.res_group_count; i++) {
771 attr_string = pac_group_attr_string(logon_info->res_groups.group_membership[i].attrs);
772 DEBUGADD(10,("\t\t%d: sid: %s-%d\n\t\t attr: 0x%x == %s\n",
773 i, sid_string_static(&res_group_dom_sid),
774 logon_info->res_groups.group_membership[i].rid,
775 logon_info->res_groups.group_membership[i].attrs,
777 SAFE_FREE(attr_string);
781 NTSTATUS decode_pac_data(TALLOC_CTX *mem_ctx,
782 DATA_BLOB *pac_data_blob,
783 krb5_context context,
784 krb5_keyblock *service_keyblock,
785 krb5_const_principal client_principal,
790 DATA_BLOB modified_pac_blob;
794 PAC_SIGNATURE_DATA *srv_sig = NULL;
795 PAC_SIGNATURE_DATA *kdc_sig = NULL;
796 PAC_LOGON_NAME *logon_name = NULL;
797 PAC_LOGON_INFO *logon_info = NULL;
798 krb5_principal client_principal_pac = NULL;
799 NTTIME tgs_authtime_nttime;
800 int i, srv_sig_pos = 0, kdc_sig_pos = 0;
805 my_pac = talloc(mem_ctx, PAC_DATA);
807 return NT_STATUS_NO_MEMORY;
810 nt_status = parse_pac_data(mem_ctx, pac_data_blob, my_pac);
811 if (!NT_STATUS_IS_OK(nt_status)) {
812 DEBUG(0,("decode_pac_data: failed to parse PAC\n"));
816 modified_pac_blob = data_blob_talloc(mem_ctx, pac_data_blob->data, pac_data_blob->length);
818 if (my_pac->num_buffers < 4) {
819 nt_status = NT_STATUS_INVALID_PARAMETER;
823 /* store signatures */
824 for (i=0; i < my_pac->num_buffers; i++) {
826 switch (my_pac->pac_buffer[i].type) {
828 case PAC_TYPE_SERVER_CHECKSUM:
829 if (!my_pac->pac_buffer[i].ctr->pac.srv_cksum) {
833 srv_sig = my_pac->pac_buffer[i].ctr->pac.srv_cksum;
835 /* get position of signature buffer */
836 srv_sig_pos = my_pac->pac_buffer[i].offset;
837 srv_sig_pos += sizeof(uint32);
841 case PAC_TYPE_PRIVSVR_CHECKSUM:
842 if (!my_pac->pac_buffer[i].ctr->pac.privsrv_cksum) {
846 kdc_sig = my_pac->pac_buffer[i].ctr->pac.privsrv_cksum;
848 /* get position of signature buffer */
849 kdc_sig_pos = my_pac->pac_buffer[i].offset;
850 kdc_sig_pos += sizeof(uint32);
854 case PAC_TYPE_LOGON_NAME:
855 if (!my_pac->pac_buffer[i].ctr->pac.logon_name) {
859 logon_name = my_pac->pac_buffer[i].ctr->pac.logon_name;
862 case PAC_TYPE_LOGON_INFO:
863 if (!my_pac->pac_buffer[i].ctr->pac.logon_info) {
867 logon_info = my_pac->pac_buffer[i].ctr->pac.logon_info;
873 if (!srv_sig || !kdc_sig || !logon_name || !logon_info) {
874 nt_status = NT_STATUS_INVALID_PARAMETER;
878 /* zero PAC_SIGNATURE_DATA signature buffer */
879 memset(&modified_pac_blob.data[srv_sig_pos], '\0', srv_sig->signature.buf_len);
880 memset(&modified_pac_blob.data[kdc_sig_pos], '\0', kdc_sig->signature.buf_len);
882 /* check server signature */
883 nt_status = check_pac_checksum(mem_ctx, modified_pac_blob, srv_sig, context, service_keyblock);
884 if (!NT_STATUS_IS_OK(nt_status)) {
885 DEBUG(0,("decode_pac_data: failed to verify PAC server signature\n"));
889 /* Convert to NT time, so as not to loose accuracy in comparison */
890 unix_to_nt_time(&tgs_authtime_nttime, tgs_authtime);
892 if (!nt_time_equals(&tgs_authtime_nttime, &logon_name->logon_time)) {
894 DEBUG(2,("decode_pac_data: Logon time mismatch between ticket and PAC!\n"));
895 DEBUGADD(2, ("decode_pac_data: PAC: %s\n",
896 http_timestring(nt_time_to_unix(logon_name->logon_time))));
897 DEBUGADD(2, ("decode_pac_data: Ticket: %s\n",
898 http_timestring(nt_time_to_unix(tgs_authtime_nttime))));
900 nt_status = NT_STATUS_ACCESS_DENIED;
904 if (!logon_name->len) {
905 DEBUG(2,("decode_pac_data: No Logon Name available\n"));
906 nt_status = NT_STATUS_INVALID_PARAMETER;
909 rpcstr_pull(username, logon_name->username, sizeof(username), logon_name->len, 0);
911 ret = smb_krb5_parse_name_norealm(context, username, &client_principal_pac);
913 DEBUG(2,("decode_pac_data: Could not parse name from incoming PAC: [%s]: %s\n",
914 username, error_message(ret)));
915 nt_status = NT_STATUS_INVALID_PARAMETER;
919 if (!smb_krb5_principal_compare_any_realm(context, client_principal, client_principal_pac)) {
920 DEBUG(2,("decode_pac_data: Name in PAC [%s] does not match principal name in ticket\n",
922 nt_status = NT_STATUS_ACCESS_DENIED;
926 DEBUG(10,("Successfully validated Kerberos PAC\n"));
928 dump_pac_logon_info(logon_info);
932 nt_status = NT_STATUS_OK;
935 if (client_principal_pac) {
936 krb5_free_principal(context, client_principal_pac);
942 PAC_LOGON_INFO *get_logon_info_from_pac(PAC_DATA *pac_data)
944 PAC_LOGON_INFO *logon_info = NULL;
947 for (i=0; i < pac_data->num_buffers; i++) {
949 if (pac_data->pac_buffer[i].type != PAC_TYPE_LOGON_INFO)
952 logon_info = pac_data->pac_buffer[i].ctr->pac.logon_info;
958 /****************************************************************
959 ****************************************************************/
961 NTSTATUS kerberos_return_pac(TALLOC_CTX *mem_ctx,
968 NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
969 DATA_BLOB tkt, ap_rep, sesskey1, sesskey2;
970 PAC_DATA *pac_data = NULL;
971 char *client_princ_out = NULL;
972 const char *auth_princ = NULL;
973 const char *local_service = NULL;
974 const char *cc = "MEMORY:kerberos_return_pac";
978 ZERO_STRUCT(sesskey1);
979 ZERO_STRUCT(sesskey2);
981 if (!name || !pass) {
982 return NT_STATUS_INVALID_PARAMETER;
985 if (!strchr_m(name, '@')) {
986 auth_princ = talloc_asprintf(mem_ctx, "%s@%s", name,
991 NT_STATUS_HAVE_NO_MEMORY(auth_princ);
993 local_service = talloc_asprintf(mem_ctx, "%s$@%s",
994 global_myname(), lp_realm());
995 NT_STATUS_HAVE_NO_MEMORY(local_service);
997 ret = kerberos_kinit_password_ext(auth_princ,
1008 /* status already set */
1012 ret = cli_krb5_get_ticket(local_service,
1020 status = krb5_to_nt_status(ret);
1024 status = ads_verify_ticket(mem_ctx,
1033 if (!NT_STATUS_IS_OK(status)) {
1038 status = NT_STATUS_INVALID_PARAMETER;
1042 *pac_ret = pac_data;
1047 data_blob_free(&tkt);
1048 data_blob_free(&ap_rep);
1049 data_blob_free(&sesskey1);
1050 data_blob_free(&sesskey2);
1052 SAFE_FREE(client_princ_out);
1057 /****************************************************************
1058 ****************************************************************/
1060 static NTSTATUS kerberos_return_pac_logon_info(TALLOC_CTX *mem_ctx,
1064 PAC_LOGON_INFO **logon_info)
1067 PAC_DATA *pac_data = NULL;
1068 PAC_LOGON_INFO *info = NULL;
1070 status = kerberos_return_pac(mem_ctx,
1075 if (!NT_STATUS_IS_OK(status)) {
1080 return NT_STATUS_INVALID_USER_BUFFER;
1083 info = get_logon_info_from_pac(pac_data);
1085 return NT_STATUS_INVALID_USER_BUFFER;
1090 return NT_STATUS_OK;
1093 /****************************************************************
1094 ****************************************************************/
1096 NTSTATUS kerberos_return_info3_from_pac(TALLOC_CTX *mem_ctx,
1100 NET_USER_INFO_3 **info3)
1103 PAC_LOGON_INFO *logon_info = NULL;
1105 status = kerberos_return_pac_logon_info(mem_ctx,
1110 if (!NT_STATUS_IS_OK(status)) {
1114 *info3 = &logon_info->info3;
1116 return NT_STATUS_OK;