-/*
+/*
Unix SMB/CIFS implementation.
kerberos authorization data (PAC) utility library
- Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
-
+ Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
+ Copyright (C) Andrew Tridgell 2001
+ Copyright (C) Luke Howard 2002-2003
+ Copyright (C) Stefan Metzmacher 2004-2005
+ Copyright (C) Guenther Deschner 2005,2007,2008
+
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
-
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+#include "librpc/gen_ndr/ndr_krb5pac.h"
#ifdef HAVE_KRB5
-static DATA_BLOB unwrap_pac(DATA_BLOB *auth_data)
-{
- DATA_BLOB pac_contents;
- ASN1_DATA data;
- int data_type;
-
- asn1_load(&data, *auth_data);
- asn1_start_tag(&data, ASN1_SEQUENCE(0));
- asn1_start_tag(&data, ASN1_SEQUENCE(0));
- asn1_start_tag(&data, ASN1_CONTEXT(0));
- asn1_read_Integer(&data, &data_type);
- asn1_end_tag(&data);
- asn1_start_tag(&data, ASN1_CONTEXT(1));
- asn1_read_OctetString(&data, &pac_contents);
- asn1_end_tag(&data);
- asn1_end_tag(&data);
- asn1_end_tag(&data);
- asn1_free(&data);
- return pac_contents;
-}
+/****************************************************************
+****************************************************************/
-static BOOL pac_io_unknown_type_10(const char *desc, UNKNOWN_TYPE_10 *type_10,
- prs_struct *ps, int depth)
+static krb5_error_code check_pac_checksum(TALLOC_CTX *mem_ctx,
+ DATA_BLOB pac_data,
+ struct PAC_SIGNATURE_DATA *sig,
+ krb5_context context,
+ krb5_keyblock *keyblock)
{
- if (NULL == type_10)
- return False;
-
- prs_debug(ps, depth, desc, "pac_io_unknown_type_10");
- depth++;
-
- if (!smb_io_time("unknown_time", &type_10->unknown_time, ps, depth))
- return False;
-
- if (!prs_uint16("len", ps, depth, &type_10->len))
- return False;
+ krb5_error_code ret;
+ krb5_checksum cksum;
+ krb5_keyusage usage = 0;
+
+ smb_krb5_checksum_from_pac_sig(&cksum, sig);
+
+#ifdef HAVE_KRB5_KU_OTHER_CKSUM /* Heimdal */
+ usage = KRB5_KU_OTHER_CKSUM;
+#elif defined(HAVE_KRB5_KEYUSAGE_APP_DATA_CKSUM) /* MIT */
+ usage = KRB5_KEYUSAGE_APP_DATA_CKSUM;
+#else
+#error UNKNOWN_KRB5_KEYUSAGE
+#endif
- if (UNMARSHALLING(ps) && type_10->len) {
- type_10->username = PRS_ALLOC_MEM(ps, uint16, type_10->len);
- if (!type_10->username) {
- DEBUG(3, ("No memory available\n"));
- return False;
- }
+ ret = smb_krb5_verify_checksum(context,
+ keyblock,
+ usage,
+ &cksum,
+ pac_data.data,
+ pac_data.length);
+
+ if (ret) {
+ DEBUG(2,("check_pac_checksum: PAC Verification failed: %s (%d)\n",
+ error_message(ret), ret));
+ return ret;
}
- if (!prs_uint16s(True, "name", ps, depth, type_10->username,
- (type_10->len / sizeof(uint16))))
- return False;
-
- return True;
-
+ return ret;
}
+/****************************************************************
+****************************************************************/
-static BOOL pac_io_krb_sids(const char *desc, KRB_SID_AND_ATTRS *sid_and_attr,
- prs_struct *ps, int depth)
+ NTSTATUS decode_pac_data(TALLOC_CTX *mem_ctx,
+ DATA_BLOB *pac_data_blob,
+ krb5_context context,
+ krb5_keyblock *service_keyblock,
+ krb5_const_principal client_principal,
+ time_t tgs_authtime,
+ struct PAC_DATA **pac_data_out)
{
- if (NULL == sid_and_attr)
- return False;
+ NTSTATUS status;
+ enum ndr_err_code ndr_err;
+ krb5_error_code ret;
+ DATA_BLOB modified_pac_blob;
- prs_debug(ps, depth, desc, "pac_io_krb_sids");
- depth++;
+ NTTIME tgs_authtime_nttime;
+ krb5_principal client_principal_pac = NULL;
+ int i;
- if (UNMARSHALLING(ps)) {
- sid_and_attr->sid = PRS_ALLOC_MEM(ps, DOM_SID2, 1);
- if (!sid_and_attr->sid) {
- DEBUG(3, ("No memory available\n"));
- return False;
- }
+ struct PAC_SIGNATURE_DATA *srv_sig_ptr = NULL;
+ struct PAC_SIGNATURE_DATA *kdc_sig_ptr = NULL;
+ struct PAC_SIGNATURE_DATA *srv_sig_wipe = NULL;
+ struct PAC_SIGNATURE_DATA *kdc_sig_wipe = NULL;
+ struct PAC_LOGON_NAME *logon_name = NULL;
+ struct PAC_LOGON_INFO *logon_info = NULL;
+ struct PAC_DATA *pac_data = NULL;
+ struct PAC_DATA_RAW *pac_data_raw = NULL;
+
+ DATA_BLOB *srv_sig_blob = NULL;
+ DATA_BLOB *kdc_sig_blob = NULL;
+
+ *pac_data_out = NULL;
+
+ pac_data = TALLOC_ZERO_P(mem_ctx, struct PAC_DATA);
+ pac_data_raw = TALLOC_ZERO_P(mem_ctx, struct PAC_DATA_RAW);
+ kdc_sig_wipe = TALLOC_ZERO_P(mem_ctx, struct PAC_SIGNATURE_DATA);
+ srv_sig_wipe = TALLOC_ZERO_P(mem_ctx, struct PAC_SIGNATURE_DATA);
+ if (!pac_data_raw || !pac_data || !kdc_sig_wipe || !srv_sig_wipe) {
+ return NT_STATUS_NO_MEMORY;
}
- if(!smb_io_dom_sid2("sid", sid_and_attr->sid, ps, depth))
- return False;
+ ndr_err = ndr_pull_struct_blob(pac_data_blob, pac_data,
+ NULL, pac_data,
+ (ndr_pull_flags_fn_t)ndr_pull_PAC_DATA);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ status = ndr_map_error2ntstatus(ndr_err);
+ DEBUG(0,("can't parse the PAC: %s\n",
+ nt_errstr(status)));
+ return status;
+ }
- return True;
-}
+ if (pac_data->num_buffers < 4) {
+ /* we need logon_ingo, service_key and kdc_key */
+ DEBUG(0,("less than 4 PAC buffers\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ ndr_err = ndr_pull_struct_blob(pac_data_blob, pac_data_raw,
+ NULL, pac_data_raw,
+ (ndr_pull_flags_fn_t)ndr_pull_PAC_DATA_RAW);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ status = ndr_map_error2ntstatus(ndr_err);
+ DEBUG(0,("can't parse the PAC: %s\n",
+ nt_errstr(status)));
+ return status;
+ }
-static BOOL pac_io_krb_attrs(const char *desc, KRB_SID_AND_ATTRS *sid_and_attr,
- prs_struct *ps, int depth)
-{
- if (NULL == sid_and_attr)
- return False;
+ if (pac_data_raw->num_buffers < 4) {
+ /* we need logon_ingo, service_key and kdc_key */
+ DEBUG(0,("less than 4 PAC buffers\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (pac_data->num_buffers != pac_data_raw->num_buffers) {
+ /* we need logon_ingo, service_key and kdc_key */
+ DEBUG(0,("misparse! PAC_DATA has %d buffers while PAC_DATA_RAW has %d\n",
+ pac_data->num_buffers, pac_data_raw->num_buffers));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
- prs_debug(ps, depth, desc, "pac_io_krb_attrs");
- depth++;
+ for (i=0; i < pac_data->num_buffers; i++) {
+ if (pac_data->buffers[i].type != pac_data_raw->buffers[i].type) {
+ DEBUG(0,("misparse! PAC_DATA buffer %d has type %d while PAC_DATA_RAW has %d\n",
+ i, pac_data->buffers[i].type, pac_data->buffers[i].type));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ switch (pac_data->buffers[i].type) {
+ case PAC_TYPE_LOGON_INFO:
+ if (!pac_data->buffers[i].info) {
+ break;
+ }
+ logon_info = pac_data->buffers[i].info->logon_info.info;
+ break;
+ case PAC_TYPE_SRV_CHECKSUM:
+ if (!pac_data->buffers[i].info) {
+ break;
+ }
+ srv_sig_ptr = &pac_data->buffers[i].info->srv_cksum;
+ srv_sig_blob = &pac_data_raw->buffers[i].info->remaining;
+ break;
+ case PAC_TYPE_KDC_CHECKSUM:
+ if (!pac_data->buffers[i].info) {
+ break;
+ }
+ kdc_sig_ptr = &pac_data->buffers[i].info->kdc_cksum;
+ kdc_sig_blob = &pac_data_raw->buffers[i].info->remaining;
+ break;
+ case PAC_TYPE_LOGON_NAME:
+ logon_name = &pac_data->buffers[i].info->logon_name;
+ break;
+ default:
+ break;
+ }
+ }
- if (!prs_uint32("sid_ptr", ps, depth, &sid_and_attr->sid_ptr))
- return False;
- if (!prs_uint32("attrs", ps, depth, &sid_and_attr->attrs))
- return False;
+ if (!logon_info) {
+ DEBUG(0,("PAC no logon_info\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
- return True;
-}
+ if (!logon_name) {
+ DEBUG(0,("PAC no logon_name\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
-static BOOL pac_io_krb_sid_and_attr_array(const char *desc,
- KRB_SID_AND_ATTR_ARRAY *array,
- uint32 num,
- prs_struct *ps, int depth)
-{
- int i;
+ if (!srv_sig_ptr || !srv_sig_blob) {
+ DEBUG(0,("PAC no srv_key\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (!kdc_sig_ptr || !kdc_sig_blob) {
+ DEBUG(0,("PAC no kdc_key\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
- if (NULL == array)
- return False;
+ /* Find and zero out the signatures, as required by the signing algorithm */
+
+ /* We find the data blobs above, now we parse them to get at the exact portion we should zero */
+ ndr_err = ndr_pull_struct_blob(kdc_sig_blob, kdc_sig_wipe,
+ NULL, kdc_sig_wipe,
+ (ndr_pull_flags_fn_t)ndr_pull_PAC_SIGNATURE_DATA);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ status = ndr_map_error2ntstatus(ndr_err);
+ DEBUG(0,("can't parse the KDC signature: %s\n",
+ nt_errstr(status)));
+ return status;
+ }
- prs_debug(ps, depth, desc, "pac_io_krb_sid_and_attr_array");
- depth++;
+ ndr_err = ndr_pull_struct_blob(srv_sig_blob, srv_sig_wipe,
+ NULL, srv_sig_wipe,
+ (ndr_pull_flags_fn_t)ndr_pull_PAC_SIGNATURE_DATA);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ status = ndr_map_error2ntstatus(ndr_err);
+ DEBUG(0,("can't parse the SRV signature: %s\n",
+ nt_errstr(status)));
+ return status;
+ }
+ /* Now zero the decoded structure */
+ memset(kdc_sig_wipe->signature.data, '\0', kdc_sig_wipe->signature.length);
+ memset(srv_sig_wipe->signature.data, '\0', srv_sig_wipe->signature.length);
+
+ /* and reencode, back into the same place it came from */
+ ndr_err = ndr_push_struct_blob(kdc_sig_blob, pac_data_raw,
+ NULL, kdc_sig_wipe,
+ (ndr_push_flags_fn_t)ndr_push_PAC_SIGNATURE_DATA);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ status = ndr_map_error2ntstatus(ndr_err);
+ DEBUG(0,("can't repack the KDC signature: %s\n",
+ nt_errstr(status)));
+ return status;
+ }
+ ndr_err = ndr_push_struct_blob(srv_sig_blob, pac_data_raw,
+ NULL, srv_sig_wipe,
+ (ndr_push_flags_fn_t)ndr_push_PAC_SIGNATURE_DATA);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ status = ndr_map_error2ntstatus(ndr_err);
+ DEBUG(0,("can't repack the SRV signature: %s\n",
+ nt_errstr(status)));
+ return status;
+ }
- if (!prs_uint32("count", ps, depth, &array->count))
- return False;
+ /* push out the whole structure, but now with zero'ed signatures */
+ ndr_err = ndr_push_struct_blob(&modified_pac_blob, pac_data_raw,
+ NULL, pac_data_raw,
+ (ndr_push_flags_fn_t)ndr_push_PAC_DATA_RAW);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ status = ndr_map_error2ntstatus(ndr_err);
+ DEBUG(0,("can't repack the RAW PAC: %s\n",
+ nt_errstr(status)));
+ return status;
+ }
- if (UNMARSHALLING(ps)) {
- array->krb_sid_and_attrs = PRS_ALLOC_MEM(ps, KRB_SID_AND_ATTRS, num);
- if (!array->krb_sid_and_attrs) {
- DEBUG(3, ("No memory available\n"));
- return False;
- }
+ /* verify by service_key */
+ ret = check_pac_checksum(mem_ctx,
+ modified_pac_blob, srv_sig_ptr,
+ context,
+ service_keyblock);
+ if (ret) {
+ DEBUG(1, ("PAC Decode: Failed to verify the service signature: %s\n",
+ error_message(ret)));
+ return NT_STATUS_ACCESS_DENIED;
}
- for (i=0; i<num; i++) {
- if (!pac_io_krb_attrs(desc,
- &array->krb_sid_and_attrs[i],
- ps, depth))
- return False;
+ /* Convert to NT time, so as not to loose accuracy in comparison */
+ unix_to_nt_time(&tgs_authtime_nttime, tgs_authtime);
+ if (tgs_authtime_nttime != logon_name->logon_time) {
+ DEBUG(2, ("PAC Decode: Logon time mismatch between ticket and PAC!\n"));
+ DEBUG(2, ("PAC Decode: PAC: %s\n", nt_time_string(mem_ctx, logon_name->logon_time)));
+ DEBUG(2, ("PAC Decode: Ticket: %s\n", nt_time_string(mem_ctx, tgs_authtime_nttime)));
+ return NT_STATUS_ACCESS_DENIED;
}
- for (i=0; i<num; i++) {
- if (!pac_io_krb_sids(desc,
- &array->krb_sid_and_attrs[i],
- ps, depth))
- return False;
+ ret = smb_krb5_parse_name_norealm(context, logon_name->account_name,
+ &client_principal_pac);
+ if (ret) {
+ DEBUG(2, ("Could not parse name from incoming PAC: [%s]: %s\n",
+ logon_name->account_name,
+ error_message(ret)));
+ return NT_STATUS_INVALID_PARAMETER;
}
- return True;
+ if (!smb_krb5_principal_compare_any_realm(context, client_principal, client_principal_pac)) {
+ DEBUG(2, ("Name in PAC [%s] does not match principal name in ticket\n",
+ logon_name->account_name));
+ krb5_free_principal(context, client_principal_pac);
+ return NT_STATUS_ACCESS_DENIED;
+ }
-}
+ DEBUG(3,("Found account name from PAC: %s [%s]\n",
+ logon_info->info3.base.account_name.string,
+ logon_info->info3.base.full_name.string));
-static BOOL pac_io_group_membership(const char *desc,
- GROUP_MEMBERSHIP *membership,
- prs_struct *ps, int depth)
-{
- if (NULL == membership)
- return False;
+ DEBUG(10,("Successfully validated Kerberos PAC\n"));
- prs_debug(ps, depth, desc, "pac_io_group_membership");
- depth++;
+ if (DEBUGLEVEL >= 10) {
+ const char *s;
+ s = NDR_PRINT_STRUCT_STRING(mem_ctx, PAC_DATA, pac_data);
+ if (s) {
+ DEBUGADD(10,("%s\n", s));
+ }
+ }
- if (!prs_uint32("rid", ps, depth, &membership->rid))
- return False;
- if (!prs_uint32("attrs", ps, depth, &membership->attrs))
- return False;
+ *pac_data_out = pac_data;
- return True;
+ return NT_STATUS_OK;
}
+/****************************************************************
+****************************************************************/
-static BOOL pac_io_group_membership_array(const char *desc,
- GROUP_MEMBERSHIP_ARRAY *array,
- uint32 num,
- prs_struct *ps, int depth)
+struct PAC_LOGON_INFO *get_logon_info_from_pac(struct PAC_DATA *pac_data)
{
int i;
- if (NULL == array)
- return False;
+ for (i=0; i < pac_data->num_buffers; i++) {
- prs_debug(ps, depth, desc, "pac_io_group_membership_array");
- depth++;
+ if (pac_data->buffers[i].type != PAC_TYPE_LOGON_INFO) {
+ continue;
+ }
+ return pac_data->buffers[i].info->logon_info.info;
+ }
- if (!prs_uint32("count", ps, depth, &array->count))
- return False;
+ return NULL;
+}
- if (UNMARSHALLING(ps)) {
- array->group_membership = PRS_ALLOC_MEM(ps, GROUP_MEMBERSHIP, num);
- if (!array->group_membership) {
- DEBUG(3, ("No memory available\n"));
- return False;
- }
+static krb5_error_code smb_krb5_get_tkt_from_creds(krb5_creds *creds,
+ DATA_BLOB *tkt)
+{
+ krb5_error_code ret;
+ krb5_context context;
+ krb5_auth_context auth_context = NULL;
+ krb5_data inbuf, outbuf;
+
+ ret = krb5_init_context(&context);
+ if (ret) {
+ return ret;
}
- for (i=0; i<num; i++) {
- if (!pac_io_group_membership(desc,
- &array->group_membership[i],
- ps, depth))
- return False;
+ ret = krb5_auth_con_init(context, &auth_context);
+ if (ret) {
+ goto done;
+ }
+ ZERO_STRUCT(inbuf);
+
+ ret = krb5_mk_req_extended(context, &auth_context, AP_OPTS_USE_SUBKEY,
+ &inbuf, creds, &outbuf);
+ if (ret) {
+ goto done;
}
- return True;
+ *tkt = data_blob(outbuf.data, outbuf.length);
+ done:
+ if (!context) {
+ return ret;
+ }
+ kerberos_free_data_contents(context, &outbuf);
+ if (auth_context) {
+ krb5_auth_con_free(context, auth_context);
+ }
+ krb5_free_context(context);
+ return ret;
}
-static BOOL pac_io_pac_logon_info(const char *desc, PAC_LOGON_INFO *info,
- prs_struct *ps, int depth)
+/****************************************************************
+****************************************************************/
+
+NTSTATUS kerberos_return_pac(TALLOC_CTX *mem_ctx,
+ const char *name,
+ const char *pass,
+ time_t time_offset,
+ time_t *expire_time,
+ time_t *renew_till_time,
+ const char *cache_name,
+ bool request_pac,
+ bool add_netbios_addr,
+ time_t renewable_time,
+ const char *impersonate_princ_s,
+ struct PAC_DATA **pac_ret)
{
- uint32 garbage;
- if (NULL == info)
- return False;
-
- prs_debug(ps, depth, desc, "pac_io_pac_logon_info");
- depth++;
-
- if (!prs_uint32("unknown", ps, depth, &garbage))
- return False;
- if (!prs_uint32("unknown", ps, depth, &garbage))
- return False;
- if (!prs_uint32("bufferlen", ps, depth, &garbage))
- return False;
- if (!prs_uint32("bufferlenhi", ps, depth, &garbage))
- return False;
- if (!prs_uint32("pointer", ps, depth, &garbage))
- return False;
-
- if (!smb_io_time("logon_time", &info->logon_time, ps, depth))
- return False;
- if (!smb_io_time("logoff_time", &info->logoff_time, ps, depth))
- return False;
- if (!smb_io_time("kickoff_time", &info->kickoff_time, ps, depth))
- return False;
- if (!smb_io_time("pass_last_set_time", &info->pass_last_set_time,
- ps, depth))
- return False;
- if (!smb_io_time("pass_can_change_time", &info->pass_can_change_time,
- ps, depth))
- return False;
- if (!smb_io_time("pass_must_change_time", &info->pass_must_change_time,
- ps, depth))
- return False;
-
- if (!smb_io_unihdr("hdr_user_name", &info->hdr_user_name, ps, depth))
- return False;
- if (!smb_io_unihdr("hdr_full_name", &info->hdr_full_name, ps, depth))
- return False;
- if (!smb_io_unihdr("hdr_logon_script", &info->hdr_logon_script,
- ps, depth))
- return False;
- if (!smb_io_unihdr("hdr_profile_path", &info->hdr_profile_path,
- ps, depth))
- return False;
- if (!smb_io_unihdr("hdr_home_dir", &info->hdr_home_dir, ps, depth))
- return False;
- if (!smb_io_unihdr("hdr_dir_drive", &info->hdr_dir_drive, ps, depth))
- return False;
-
- if (!prs_uint16("logon_count", ps, depth, &info->logon_count))
- return False;
- if (!prs_uint16("reserved12", ps, depth, &info->reserved12))
- return False;
- if (!prs_uint32("user_rid", ps, depth, &info->user_rid))
- return False;
- if (!prs_uint32("group_rid", ps, depth, &info->group_rid))
- return False;
- if (!prs_uint32("group_count", ps, depth, &info->group_count))
- return False;
- /* I haven't seen this contain anything yet, but when it does
- we will have to make sure we decode the contents in the middle
- all the unistr2s ... */
- if (!prs_uint32("group_mem_ptr", ps, depth,
- &info->group_membership_ptr))
- return False;
- if (!prs_uint32("user_flags", ps, depth, &info->user_flags))
- return False;
-
- if (!prs_uint32("reserved13.0", ps, depth, &info->reserved13[0]))
- return False;
- if (!prs_uint32("reserved13.1", ps, depth, &info->reserved13[1]))
- return False;
- if (!prs_uint32("reserved13.2", ps, depth, &info->reserved13[2]))
- return False;
- if (!prs_uint32("reserved13.3", ps, depth, &info->reserved13[3]))
- return False;
-
- if (!smb_io_unihdr("hdr_dom_controller",
- &info->hdr_dom_controller, ps, depth))
- return False;
- if (!smb_io_unihdr("hdr_dom_name", &info->hdr_dom_name, ps, depth))
- return False;
-
- /* this should be followed, but just get ptr for now */
- if (!prs_uint32("ptr_dom_sid", ps, depth, &info->ptr_dom_sid))
- return False;
-
- if (!prs_uint32("reserved16.0", ps, depth, &info->reserved16[0]))
- return False;
- if (!prs_uint32("reserved16.1", ps, depth, &info->reserved16[1]))
- return False;
-
- /* might be acb_info */
- if (!prs_uint32("reserved17", ps, depth, &info->reserved17))
- return False;
-
-
- if (!prs_uint32("reserved18.0", ps, depth, &info->reserved18[0]))
- return False;
- if (!prs_uint32("reserved18.1", ps, depth, &info->reserved18[1]))
- return False;
- if (!prs_uint32("reserved18.2", ps, depth, &info->reserved18[2]))
- return False;
- if (!prs_uint32("reserved18.3", ps, depth, &info->reserved18[3]))
- return False;
- if (!prs_uint32("reserved18.4", ps, depth, &info->reserved18[4]))
- return False;
- if (!prs_uint32("reserved18.5", ps, depth, &info->reserved18[5]))
- return False;
- if (!prs_uint32("reserved18.6", ps, depth, &info->reserved18[6]))
- return False;
-
- if (!prs_uint32("sid_count", ps, depth, &info->sid_count))
- return False;
- if (!prs_uint32("ptr_extra_sids", ps, depth, &info->ptr_extra_sids))
- return False;
- if (!prs_uint32("ptr_res_group_dom_sid", ps, depth,
- &info->ptr_res_group_dom_sid))
- return False;
- if (!prs_uint32("res_group_count", ps, depth, &info->res_group_count))
- return False;
- if (!prs_uint32("ptr_res_groups", ps, depth, &info->ptr_res_groups))
- return False;
-
- if(!smb_io_unistr2("uni_user_name", &info->uni_user_name,
- info->hdr_user_name.buffer, ps, depth))
- return False;
- if(!smb_io_unistr2("uni_full_name", &info->uni_full_name,
- info->hdr_full_name.buffer, ps, depth))
- return False;
- if(!smb_io_unistr2("uni_logon_script", &info->uni_logon_script,
- info->hdr_logon_script.buffer, ps, depth))
- return False;
- if(!smb_io_unistr2("uni_profile_path", &info->uni_profile_path,
- info->hdr_profile_path.buffer, ps, depth))
- return False;
- if(!smb_io_unistr2("uni_home_dir", &info->uni_home_dir,
- info->hdr_home_dir.buffer, ps, depth))
- return False;
- if(!smb_io_unistr2("uni_dir_drive", &info->uni_dir_drive,
- info->hdr_dir_drive.buffer, ps, depth))
- return False;
-
- if (info->group_membership_ptr) {
- if (!pac_io_group_membership_array("group membership",
- &info->groups,
- info->group_count,
- ps, depth))
- return False;
- }
-
-
- if(!smb_io_unistr2("uni_dom_controller", &info->uni_dom_controller,
- info->hdr_dom_controller.buffer, ps, depth))
- return False;
- if(!smb_io_unistr2("uni_dom_name", &info->uni_dom_name,
- info->hdr_dom_name.buffer, ps, depth))
- return False;
-
- if(info->ptr_dom_sid)
- if(!smb_io_dom_sid2("dom_sid", &info->dom_sid, ps, depth))
- return False;
-
-
- if (info->sid_count && info->ptr_extra_sids)
- if (!pac_io_krb_sid_and_attr_array("extra_sids",
- &info->extra_sids,
- info->sid_count,
- ps, depth))
- return False;
-
- if (info->ptr_res_group_dom_sid)
- if (!smb_io_dom_sid2("res_group_dom_sid",
- &info->res_group_dom_sid, ps, depth))
- return False;
-
- if (info->ptr_res_groups)
- if (!pac_io_group_membership_array("res group membership",
- &info->res_groups,
- info->res_group_count,
- ps, depth))
- return False;
-
- return True;
-}
+ krb5_error_code ret;
+ NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
+ DATA_BLOB tkt, ap_rep, sesskey1, sesskey2;
+ struct PAC_DATA *pac_data = NULL;
+ char *client_princ_out = NULL;
+ const char *auth_princ = NULL;
+ const char *local_service = NULL;
+ const char *cc = "MEMORY:kerberos_return_pac";
+ krb5_creds *creds = NULL;
+
+ ZERO_STRUCT(tkt);
+ ZERO_STRUCT(ap_rep);
+ ZERO_STRUCT(sesskey1);
+ ZERO_STRUCT(sesskey2);
+
+ if (!name || !pass) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ if (cache_name) {
+ cc = cache_name;
+ }
-static BOOL pac_io_pac_signature_data(const char *desc,
- PAC_SIGNATURE_DATA *data, uint32 length,
- prs_struct *ps, int depth)
-{
- uint32 siglen = length - sizeof(uint32);
- if (NULL == data)
- return False;
-
- prs_debug(ps, depth, desc, "pac_io_pac_signature_data");
- depth++;
-
- if (!prs_uint32("type", ps, depth, &data->type))
- return False;
- if (UNMARSHALLING(ps)) {
- data->signature = PRS_ALLOC_MEM(ps, unsigned char, siglen);
- if (!data->signature) {
- DEBUG(3, ("No memory available\n"));
- return False;
- }
+ if (!strchr_m(name, '@')) {
+ auth_princ = talloc_asprintf(mem_ctx, "%s@%s", name,
+ lp_realm());
+ } else {
+ auth_princ = name;
+ }
+ NT_STATUS_HAVE_NO_MEMORY(auth_princ);
+
+ local_service = talloc_asprintf(mem_ctx, "%s$@%s",
+ global_myname(), lp_realm());
+ NT_STATUS_HAVE_NO_MEMORY(local_service);
+
+ ret = kerberos_kinit_password_ext(auth_princ,
+ pass,
+ time_offset,
+ expire_time,
+ renew_till_time,
+ cc,
+ request_pac,
+ add_netbios_addr,
+ renewable_time,
+ &status);
+ if (ret) {
+ DEBUG(1,("kinit failed for '%s' with: %s (%d)\n",
+ auth_princ, error_message(ret), ret));
+ /* status already set */
+ goto out;
}
- if (!prs_uint8s(False, "signature", ps, depth, data->signature,siglen))
- return False;
- return True;
-}
+ DEBUG(10,("got TGT for %s in %s\n", auth_princ, cc));
+ if (expire_time) {
+ DEBUGADD(10,("\tvalid until: %s (%d)\n",
+ http_timestring(talloc_tos(), *expire_time),
+ (int)*expire_time));
+ }
+ if (renew_till_time) {
+ DEBUGADD(10,("\trenewable till: %s (%d)\n",
+ http_timestring(talloc_tos(), *renew_till_time),
+ (int)*renew_till_time));
+ }
-static BOOL pac_io_pac_info_hdr_ctr(const char *desc, PAC_INFO_HDR *hdr,
- prs_struct *ps, int depth)
-{
- if (NULL == hdr)
- return False;
+ /* we cannot continue with krb5 when UF_DONT_REQUIRE_PREAUTH is set,
+ * in that case fallback to NTLM - gd */
- prs_debug(ps, depth, desc, "pac_io_pac_info_hdr_ctr");
- depth++;
+ if (expire_time && renew_till_time &&
+ (*expire_time == 0) && (*renew_till_time == 0)) {
+ return NT_STATUS_INVALID_LOGON_TYPE;
+ }
+#if 1
+ ret = smb_krb5_get_creds(local_service,
+ time_offset,
+ cc,
+ impersonate_princ_s,
+ &creds);
+ if (ret) {
+ DEBUG(1,("failed to get credentials for %s: %s\n",
+ local_service, error_message(ret)));
+ status = krb5_to_nt_status(ret);
+ goto out;
+ }
- if (!prs_align(ps))
- return False;
+ ret = smb_krb5_get_tkt_from_creds(creds, &tkt);
+ if (ret) {
+ status = krb5_to_nt_status(ret);
+ goto out;
+ }
- if (hdr->offset != prs_offset(ps)) {
- DEBUG(5, ("offset in header(x%x) and data(x%x) do not match\n",
- hdr->offset, prs_offset(ps)));
- prs_set_offset(ps, hdr->offset);
+#else
+ ret = cli_krb5_get_ticket(local_service,
+ time_offset,
+ &tkt,
+ &sesskey1,
+ 0,
+ cc,
+ NULL,
+ impersonate_princ_s);
+ if (ret) {
+ DEBUG(1,("failed to get ticket for %s: %s\n",
+ local_service, error_message(ret)));
+ status = krb5_to_nt_status(ret);
+ goto out;
+ }
+#endif
+ status = ads_verify_ticket(mem_ctx,
+ lp_realm(),
+ time_offset,
+ &tkt,
+ &client_princ_out,
+ &pac_data,
+ &ap_rep,
+ &sesskey2,
+ False);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1,("ads_verify_ticket failed: %s\n",
+ nt_errstr(status)));
+ goto out;
}
- if (UNMARSHALLING(ps) && hdr->size > 0) {
- hdr->ctr = PRS_ALLOC_MEM(ps, PAC_INFO_CTR, 1);
- if (!hdr->ctr) {
- DEBUG(3, ("No memory available\n"));
- return False;
- }
+ if (!pac_data) {
+ DEBUG(1,("no PAC\n"));
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto out;
}
- switch(hdr->type) {
- case PAC_TYPE_LOGON_INFO:
- DEBUG(5, ("PAC_TYPE_LOGON_INFO\n"));
- if (UNMARSHALLING(ps))
- hdr->ctr->pac.logon_info = PRS_ALLOC_MEM(ps, PAC_LOGON_INFO, 1);
- if (!hdr->ctr->pac.logon_info) {
- DEBUG(3, ("No memory available\n"));
- return False;
- }
- if (!pac_io_pac_logon_info(desc, hdr->ctr->pac.logon_info,
- ps, depth))
- return False;
- break;
-
- case PAC_TYPE_SERVER_CHECKSUM:
- DEBUG(5, ("PAC_TYPE_SERVER_CHECKSUM\n"));
- if (UNMARSHALLING(ps))
- hdr->ctr->pac.srv_cksum = PRS_ALLOC_MEM(ps, PAC_SIGNATURE_DATA, 1);
- if (!hdr->ctr->pac.srv_cksum) {
- DEBUG(3, ("No memory available\n"));
- return False;
- }
- if (!pac_io_pac_signature_data(desc, hdr->ctr->pac.srv_cksum,
- hdr->size, ps, depth))
- return False;
- break;
-
- case PAC_TYPE_PRIVSVR_CHECKSUM:
- DEBUG(5, ("PAC_TYPE_PRIVSVR_CHECKSUM\n"));
- if (UNMARSHALLING(ps))
- hdr->ctr->pac.privsrv_cksum = PRS_ALLOC_MEM(ps, PAC_SIGNATURE_DATA, 1);
- if (!hdr->ctr->pac.privsrv_cksum) {
- DEBUG(3, ("No memory available\n"));
- return False;
- }
- if (!pac_io_pac_signature_data(desc,
- hdr->ctr->pac.privsrv_cksum,
- hdr->size, ps, depth))
- return False;
- break;
-
- case PAC_TYPE_UNKNOWN_10:
- DEBUG(5, ("PAC_TYPE_UNKNOWN_10\n"));
- if (UNMARSHALLING(ps))
- hdr->ctr->pac.type_10 = PRS_ALLOC_MEM(ps, UNKNOWN_TYPE_10, 1);
- if (!hdr->ctr->pac.type_10) {
- DEBUG(3, ("No memory available\n"));
- return False;
- }
- if (!pac_io_unknown_type_10(desc, hdr->ctr->pac.type_10,
- ps, depth))
- return False;
- break;
+ *pac_ret = pac_data;
- default:
- /* dont' know, so we need to skip it */
- DEBUG(3, ("unknown PAC type %d\n", hdr->type));
- prs_set_offset(ps, prs_offset(ps) + hdr->size);
+out:
+ if (cc != cache_name) {
+ ads_kdestroy(cc);
}
- return True;
-}
+ data_blob_free(&tkt);
+ data_blob_free(&ap_rep);
+ data_blob_free(&sesskey1);
+ data_blob_free(&sesskey2);
-static BOOL pac_io_pac_info_hdr(const char *desc, PAC_INFO_HDR *hdr,
- prs_struct *ps, int depth)
-{
- if (NULL == hdr)
- return False;
-
- prs_debug(ps, depth, desc, "pac_io_pac_info_hdr");
- depth++;
-
- if (!prs_align(ps))
- return False;
- if (!prs_uint32("type", ps, depth, &hdr->type))
- return False;
- if (!prs_uint32("size", ps, depth, &hdr->size))
- return False;
- if (!prs_uint32("offset", ps, depth, &hdr->offset))
- return False;
- if (!prs_uint32("offsethi", ps, depth, &hdr->offsethi))
- return False;
-
- return True;
+ TALLOC_FREE(client_princ_out);
+
+ return status;
}
-static BOOL pac_io_pac_data(const char *desc, PAC_DATA *data,
- prs_struct *ps, int depth)
+/****************************************************************
+****************************************************************/
+
+static NTSTATUS kerberos_return_pac_logon_info(TALLOC_CTX *mem_ctx,
+ const char *name,
+ const char *pass,
+ time_t time_offset,
+ time_t *expire_time,
+ time_t *renew_till_time,
+ const char *cache_name,
+ bool request_pac,
+ bool add_netbios_addr,
+ time_t renewable_time,
+ const char *impersonate_princ_s,
+ struct PAC_LOGON_INFO **logon_info)
{
- int i;
-
- if (NULL == data)
- return False;
-
- prs_debug(ps, depth, desc, "pac_io_pac_data");
- depth++;
-
- if (!prs_align(ps))
- return False;
- if (!prs_uint32("num_buffers", ps, depth, &data->num_buffers))
- return False;
- if (!prs_uint32("version", ps, depth, &data->version))
- return False;
-
- if (UNMARSHALLING(ps) && data->num_buffers > 0) {
- if ((data->pac_info_hdr_ptr = PRS_ALLOC_MEM(ps, PAC_INFO_HDR, data->num_buffers)) == NULL) {
- return False;
- }
+ NTSTATUS status;
+ struct PAC_DATA *pac_data = NULL;
+ struct PAC_LOGON_INFO *info = NULL;
+
+ status = kerberos_return_pac(mem_ctx,
+ name,
+ pass,
+ time_offset,
+ expire_time,
+ renew_till_time,
+ cache_name,
+ request_pac,
+ add_netbios_addr,
+ renewable_time,
+ impersonate_princ_s,
+ &pac_data);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
}
- for (i=0; i<data->num_buffers; i++) {
- if (!pac_io_pac_info_hdr(desc, &data->pac_info_hdr_ptr[i], ps,
- depth))
- return False;
+ if (!pac_data) {
+ DEBUG(3,("no pac\n"));
+ return NT_STATUS_INVALID_USER_BUFFER;
}
- for (i=0; i<data->num_buffers; i++) {
- if (!pac_io_pac_info_hdr_ctr(desc, &data->pac_info_hdr_ptr[i],
- ps, depth))
- return False;
+ info = get_logon_info_from_pac(pac_data);
+ if (!info) {
+ DEBUG(1,("no logon_info\n"));
+ return NT_STATUS_INVALID_USER_BUFFER;
}
- return True;
+ *logon_info = info;
+
+ return NT_STATUS_OK;
}
-PAC_DATA *decode_pac_data(DATA_BLOB *auth_data, TALLOC_CTX *ctx)
+/****************************************************************
+****************************************************************/
+
+NTSTATUS kerberos_return_info3_from_pac(TALLOC_CTX *mem_ctx,
+ const char *name,
+ const char *pass,
+ time_t time_offset,
+ time_t *expire_time,
+ time_t *renew_till_time,
+ const char *cache_name,
+ bool request_pac,
+ bool add_netbios_addr,
+ time_t renewable_time,
+ const char *impersonate_princ_s,
+ struct netr_SamInfo3 **info3)
{
- DATA_BLOB pac_data_blob = unwrap_pac(auth_data);
- prs_struct ps;
- PAC_DATA *pac_data;
-
- DEBUG(5,("dump_pac_data\n"));
- prs_init(&ps, pac_data_blob.length, ctx, UNMARSHALL);
- prs_copy_data_in(&ps, (char *)pac_data_blob.data, pac_data_blob.length);
- prs_set_offset(&ps, 0);
-
- data_blob_free(&pac_data_blob);
-
- pac_data = TALLOC_ZERO_P(ctx, PAC_DATA);
- pac_io_pac_data("pac data", pac_data, &ps, 0);
+ NTSTATUS status;
+ struct PAC_LOGON_INFO *logon_info = NULL;
+
+ status = kerberos_return_pac_logon_info(mem_ctx,
+ name,
+ pass,
+ time_offset,
+ expire_time,
+ renew_till_time,
+ cache_name,
+ request_pac,
+ add_netbios_addr,
+ renewable_time,
+ impersonate_princ_s,
+ &logon_info);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
- prs_mem_free(&ps);
+ *info3 = &logon_info->info3;
- return pac_data;
+ return NT_STATUS_OK;
}
-
#endif
git.samba.org / ira / wip.git / blobdiff