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samba-mirror/source3/rpc_server/netlogon/srv_netlog_nt.c
Jo Sutton 747a7fec01 s3:rpc_server: Check query level according to MS-NRPC 
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15465
Signed-off-by: Jo Sutton <josutton@catalyst.net.nz>
Reviewed-by: Noel Power <noel.power@suse.com>

Autobuild-User(master): Noel Power <npower@samba.org>
Autobuild-Date(master): Tue Jun  4 09:39:42 UTC 2024 on atb-devel-224
2024-06-04 09:39:42 +00:00

2948 lines
78 KiB
C
Raw Blame History

/*
* Unix SMB/CIFS implementation.
* RPC Pipe client / server routines
* Copyright (C) Andrew Tridgell 1992-1997,
* Copyright (C) Luke Kenneth Casson Leighton 1996-1997,
* Copyright (C) Paul Ashton 1997.
* Copyright (C) Jeremy Allison 1998-2001.
* Copyright (C) Andrew Bartlett 2001.
* Copyright (C) Guenther Deschner 2008-2009.
*
* 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 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, see <http://www.gnu.org/licenses/>.
*/
/* This is the implementation of the netlogon pipe. */
#include "includes.h"
#include "system/passwd.h" /* uid_wrapper */
#include "ntdomain.h"
#include "../libcli/auth/schannel.h"
#include "librpc/rpc/dcesrv_core.h"
#include "librpc/gen_ndr/ndr_netlogon.h"
#include "librpc/gen_ndr/ndr_netlogon_scompat.h"
#include "librpc/gen_ndr/ndr_samr_c.h"
#include "librpc/gen_ndr/ndr_lsa_c.h"
#include "rpc_client/cli_lsarpc.h"
#include "rpc_client/init_lsa.h"
#include "rpc_client/init_samr.h"
#include "rpc_server/rpc_ncacn_np.h"
#include "../libcli/security/security.h"
#include "../libcli/security/dom_sid.h"
#include "librpc/gen_ndr/ndr_drsblobs.h"
#include "lib/crypto/md4.h"
#include "nsswitch/libwbclient/wbclient.h"
#include "../libcli/registry/util_reg.h"
#include "passdb.h"
#include "auth.h"
#include "messages.h"
#include "../lib/tsocket/tsocket.h"
#include "lib/param/param.h"
#include "libsmb/dsgetdcname.h"
#include "lib/util/util_str_escape.h"
#include "source3/lib/substitute.h"
#include "librpc/rpc/server/netlogon/schannel_util.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_RPC_SRV
/*************************************************************************
_netr_LogonControl
*************************************************************************/
WERROR _netr_LogonControl(struct pipes_struct *p,
struct netr_LogonControl *r)
{
struct netr_LogonControl2Ex l;
switch (r->in.level) {
case 1:
break;
case 2:
return WERR_NOT_SUPPORTED;
default:
return WERR_INVALID_LEVEL;
}
switch (r->in.function_code) {
case NETLOGON_CONTROL_QUERY:
case NETLOGON_CONTROL_REPLICATE:
case NETLOGON_CONTROL_SYNCHRONIZE:
case NETLOGON_CONTROL_PDC_REPLICATE:
case NETLOGON_CONTROL_BREAKPOINT:
case NETLOGON_CONTROL_BACKUP_CHANGE_LOG:
case NETLOGON_CONTROL_TRUNCATE_LOG:
break;
default:
return WERR_NOT_SUPPORTED;
}
l.in.logon_server = r->in.logon_server;
l.in.function_code = r->in.function_code;
l.in.level = r->in.level;
l.in.data = NULL;
l.out.query = r->out.query;
return _netr_LogonControl2Ex(p, &l);
}
/*************************************************************************
_netr_LogonControl2
*************************************************************************/
WERROR _netr_LogonControl2(struct pipes_struct *p,
struct netr_LogonControl2 *r)
{
struct netr_LogonControl2Ex l;
l.in.logon_server = r->in.logon_server;
l.in.function_code = r->in.function_code;
l.in.level = r->in.level;
l.in.data = r->in.data;
l.out.query = r->out.query;
return _netr_LogonControl2Ex(p, &l);
}
/*************************************************************************
*************************************************************************/
static bool wb_change_trust_creds(const char *domain, WERROR *tc_status)
{
wbcErr result;
struct wbcAuthErrorInfo *error = NULL;
result = wbcChangeTrustCredentials(domain, &error);
switch (result) {
case WBC_ERR_WINBIND_NOT_AVAILABLE:
return false;
case WBC_ERR_DOMAIN_NOT_FOUND:
*tc_status = WERR_NO_SUCH_DOMAIN;
return true;
case WBC_ERR_SUCCESS:
*tc_status = WERR_OK;
return true;
default:
break;
}
if (error && error->nt_status != 0) {
*tc_status = ntstatus_to_werror(NT_STATUS(error->nt_status));
} else {
*tc_status = WERR_TRUST_FAILURE;
}
wbcFreeMemory(error);
return true;
}
/*************************************************************************
*************************************************************************/
static bool wb_check_trust_creds(const char *domain, WERROR *tc_status)
{
wbcErr result;
struct wbcAuthErrorInfo *error = NULL;
result = wbcCheckTrustCredentials(domain, &error);
switch (result) {
case WBC_ERR_WINBIND_NOT_AVAILABLE:
return false;
case WBC_ERR_DOMAIN_NOT_FOUND:
*tc_status = WERR_NO_SUCH_DOMAIN;
return true;
case WBC_ERR_SUCCESS:
*tc_status = WERR_OK;
return true;
default:
break;
}
if (error && error->nt_status != 0) {
*tc_status = ntstatus_to_werror(NT_STATUS(error->nt_status));
} else {
*tc_status = WERR_TRUST_FAILURE;
}
wbcFreeMemory(error);
return true;
}
/****************************************************************
_netr_LogonControl2Ex
****************************************************************/
WERROR _netr_LogonControl2Ex(struct pipes_struct *p,
struct netr_LogonControl2Ex *r)
{
struct dcesrv_call_state *dce_call = p->dce_call;
struct auth_session_info *session_info =
dcesrv_call_session_info(dce_call);
uint32_t flags = 0x0;
WERROR pdc_connection_status = WERR_OK;
uint32_t logon_attempts = 0x0;
WERROR tc_status;
fstring dc_name2;
const char *dc_name = NULL;
struct sockaddr_storage dc_ss;
const char *domain = NULL;
struct netr_NETLOGON_INFO_1 *info1;
struct netr_NETLOGON_INFO_2 *info2;
struct netr_NETLOGON_INFO_3 *info3;
const char *fn;
NTSTATUS status;
struct netr_DsRGetDCNameInfo *dc_info;
switch (dce_call->pkt.u.request.opnum) {
case NDR_NETR_LOGONCONTROL:
fn = "_netr_LogonControl";
break;
case NDR_NETR_LOGONCONTROL2:
fn = "_netr_LogonControl2";
break;
case NDR_NETR_LOGONCONTROL2EX:
fn = "_netr_LogonControl2Ex";
break;
default:
return WERR_INVALID_PARAMETER;
}
switch (r->in.level) {
case 1:
case 2:
case 3:
case 4:
break;
default:
return WERR_INVALID_LEVEL;
}
switch (r->in.function_code) {
case NETLOGON_CONTROL_QUERY:
break;
default:
if ((geteuid() != sec_initial_uid()) &&
!nt_token_check_domain_rid(
session_info->security_token, DOMAIN_RID_ADMINS) &&
!nt_token_check_sid(
&global_sid_Builtin_Administrators,
session_info->security_token))
{
return WERR_ACCESS_DENIED;
}
break;
}
tc_status = WERR_NO_SUCH_DOMAIN;
switch (r->in.function_code) {
case NETLOGON_CONTROL_QUERY:
switch (r->in.level) {
case 1:
case 3:
break;
default:
return WERR_INVALID_PARAMETER;
}
tc_status = WERR_OK;
break;
case NETLOGON_CONTROL_REPLICATE:
case NETLOGON_CONTROL_SYNCHRONIZE:
case NETLOGON_CONTROL_PDC_REPLICATE:
case NETLOGON_CONTROL_BACKUP_CHANGE_LOG:
case NETLOGON_CONTROL_BREAKPOINT:
case NETLOGON_CONTROL_TRUNCATE_LOG:
case NETLOGON_CONTROL_TRANSPORT_NOTIFY:
case NETLOGON_CONTROL_FORCE_DNS_REG:
return WERR_NOT_SUPPORTED;
case NETLOGON_CONTROL_QUERY_DNS_REG:
if (r->in.level != 1) {
return WERR_INVALID_PARAMETER;
}
return WERR_NOT_SUPPORTED;
case NETLOGON_CONTROL_FIND_USER:
if (r->in.level != 4) {
return WERR_INVALID_PARAMETER;
}
if (!r->in.data || !r->in.data->user) {
return WERR_NOT_SUPPORTED;
}
break;
case NETLOGON_CONTROL_SET_DBFLAG:
if (!r->in.data) {
return WERR_NOT_SUPPORTED;
}
break;
case NETLOGON_CONTROL_TC_VERIFY:
if (r->in.level != 2) {
return WERR_INVALID_PARAMETER;
}
if (!r->in.data || !r->in.data->domain) {
return WERR_NOT_SUPPORTED;
}
if (!wb_check_trust_creds(r->in.data->domain, &tc_status)) {
return WERR_NOT_SUPPORTED;
}
break;
case NETLOGON_CONTROL_TC_QUERY:
if (!r->in.data || !r->in.data->domain) {
return WERR_NOT_SUPPORTED;
}
domain = r->in.data->domain;
if (!is_trusted_domain(domain)) {
break;
}
if (!get_dc_name(domain, NULL, dc_name2, &dc_ss)) {
tc_status = WERR_NO_LOGON_SERVERS;
break;
}
dc_name = talloc_asprintf(p->mem_ctx, "\\\\%s", dc_name2);
if (!dc_name) {
return WERR_NOT_ENOUGH_MEMORY;
}
tc_status = WERR_OK;
break;
case NETLOGON_CONTROL_REDISCOVER:
if (!r->in.data || !r->in.data->domain) {
return WERR_NOT_SUPPORTED;
}
domain = r->in.data->domain;
if (!is_trusted_domain(domain)) {
break;
}
status = dsgetdcname(p->mem_ctx, p->msg_ctx, domain, NULL, NULL,
DS_FORCE_REDISCOVERY | DS_RETURN_FLAT_NAME,
&dc_info);
if (!NT_STATUS_IS_OK(status)) {
tc_status = WERR_NO_LOGON_SERVERS;
break;
}
dc_name = talloc_asprintf(p->mem_ctx, "\\\\%s", dc_info->dc_unc);
if (!dc_name) {
return WERR_NOT_ENOUGH_MEMORY;
}
tc_status = WERR_OK;
break;
case NETLOGON_CONTROL_CHANGE_PASSWORD:
if (!r->in.data || !r->in.data->domain) {
return WERR_NOT_SUPPORTED;
}
if (!wb_change_trust_creds(r->in.data->domain, &tc_status)) {
return WERR_NOT_SUPPORTED;
}
break;
default:
/* no idea what this should be */
DEBUG(0,("%s: unimplemented function level [%d]\n",
fn, r->in.function_code));
return WERR_NOT_SUPPORTED;
}
/* prepare the response */
switch (r->in.level) {
case 1:
info1 = talloc_zero(p->mem_ctx, struct netr_NETLOGON_INFO_1);
W_ERROR_HAVE_NO_MEMORY(info1);
info1->flags = flags;
info1->pdc_connection_status = pdc_connection_status;
r->out.query->info1 = info1;
break;
case 2:
if (r->in.function_code != NETLOGON_CONTROL_REDISCOVER &&
r->in.function_code != NETLOGON_CONTROL_TC_QUERY &&
r->in.function_code != NETLOGON_CONTROL_TC_VERIFY)
{
return WERR_INVALID_PARAMETER;
}
info2 = talloc_zero(p->mem_ctx, struct netr_NETLOGON_INFO_2);
W_ERROR_HAVE_NO_MEMORY(info2);
info2->flags = flags;
info2->pdc_connection_status = pdc_connection_status;
info2->trusted_dc_name = dc_name;
info2->tc_connection_status = tc_status;
r->out.query->info2 = info2;
break;
case 3:
info3 = talloc_zero(p->mem_ctx, struct netr_NETLOGON_INFO_3);
W_ERROR_HAVE_NO_MEMORY(info3);
info3->flags = flags;
info3->logon_attempts = logon_attempts;
r->out.query->info3 = info3;
break;
case 4:
if (r->in.function_code != NETLOGON_CONTROL_FIND_USER) {
return WERR_INVALID_PARAMETER;
}
return WERR_NOT_SUPPORTED;
default:
return WERR_INVALID_LEVEL;
}
return WERR_OK;
}
/*************************************************************************
_netr_NetrEnumerateTrustedDomains
*************************************************************************/
NTSTATUS _netr_NetrEnumerateTrustedDomains(struct pipes_struct *p,
struct netr_NetrEnumerateTrustedDomains *r)
{
struct dcesrv_call_state *dce_call = p->dce_call;
struct dcesrv_connection *dcesrv_conn = dce_call->conn;
const struct tsocket_address *local_address =
dcesrv_connection_get_local_address(dcesrv_conn);
const struct tsocket_address *remote_address =
dcesrv_connection_get_remote_address(dcesrv_conn);
struct auth_session_info *session_info =
dcesrv_call_session_info(dce_call);
NTSTATUS status;
NTSTATUS result = NT_STATUS_OK;
DATA_BLOB blob;
size_t num_domains = 0;
const char **trusted_domains = NULL;
struct lsa_DomainList domain_list;
struct dcerpc_binding_handle *h = NULL;
struct policy_handle pol;
uint32_t enum_ctx = 0;
uint32_t max_size = (uint32_t)-1;
union lsa_revision_info out_revision_info = {
.info1 = {
.revision = 0,
},
};
uint32_t out_version = 0;
ZERO_STRUCT(pol);
DEBUG(6,("_netr_NetrEnumerateTrustedDomains: %d\n", __LINE__));
status = rpcint_binding_handle(p->mem_ctx,
&ndr_table_lsarpc,
remote_address,
local_address,
session_info,
p->msg_ctx,
&h);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
status = dcerpc_lsa_open_policy_fallback(
h,
p->mem_ctx,
NULL,
true,
LSA_POLICY_VIEW_LOCAL_INFORMATION,
&out_version,
&out_revision_info,
&pol,
&result);
if (any_nt_status_not_ok(status, result, &status)) {
goto out;
}
do {
uint32_t i;
/* Lookup list of trusted domains */
status = dcerpc_lsa_EnumTrustDom(h,
p->mem_ctx,
&pol,
&enum_ctx,
&domain_list,
max_size,
&result);
if (!NT_STATUS_IS_OK(status)) {
goto out;
}
if (!NT_STATUS_IS_OK(result) &&
!NT_STATUS_EQUAL(result, NT_STATUS_NO_MORE_ENTRIES) &&
!NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES)) {
status = result;
goto out;
}
for (i = 0; i < domain_list.count; i++) {
if (!add_string_to_array(p->mem_ctx, domain_list.domains[i].name.string,
&trusted_domains, &num_domains)) {
status = NT_STATUS_NO_MEMORY;
goto out;
}
}
} while (NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES));
if (num_domains > 0) {
/* multi sz terminate */
trusted_domains = talloc_realloc(p->mem_ctx, trusted_domains, const char *, num_domains + 1);
if (trusted_domains == NULL) {
status = NT_STATUS_NO_MEMORY;
goto out;
}
trusted_domains[num_domains] = NULL;
}
if (!push_reg_multi_sz(trusted_domains, &blob, trusted_domains)) {
TALLOC_FREE(trusted_domains);
status = NT_STATUS_NO_MEMORY;
goto out;
}
r->out.trusted_domains_blob->data = blob.data;
r->out.trusted_domains_blob->length = blob.length;
DEBUG(6,("_netr_NetrEnumerateTrustedDomains: %d\n", __LINE__));
status = NT_STATUS_OK;
out:
if (is_valid_policy_hnd(&pol)) {
dcerpc_lsa_Close(h, p->mem_ctx, &pol, &result);
}
return status;
}
/*************************************************************************
*************************************************************************/
static NTSTATUS samr_find_machine_account(TALLOC_CTX *mem_ctx,
struct dcerpc_binding_handle *b,
const char *account_name,
uint32_t access_mask,
struct dom_sid2 **domain_sid_p,
uint32_t *user_rid_p,
struct policy_handle *user_handle)
{
NTSTATUS status;
NTSTATUS result = NT_STATUS_OK;
struct policy_handle connect_handle;
struct policy_handle domain_handle = { 0, };
struct lsa_String domain_name;
struct dom_sid2 *domain_sid;
struct lsa_String names;
struct samr_Ids rids;
struct samr_Ids types;
uint32_t rid;
status = dcerpc_samr_Connect2(b, mem_ctx,
lp_netbios_name(),
SAMR_ACCESS_CONNECT_TO_SERVER |
SAMR_ACCESS_ENUM_DOMAINS |
SAMR_ACCESS_LOOKUP_DOMAIN,
&connect_handle,
&result);
if (any_nt_status_not_ok(status, result, &status)) {
goto out;
}
init_lsa_String(&domain_name, get_global_sam_name());
status = dcerpc_samr_LookupDomain(b, mem_ctx,
&connect_handle,
&domain_name,
&domain_sid,
&result);
if (any_nt_status_not_ok(status, result, &status)) {
goto out;
}
status = dcerpc_samr_OpenDomain(b, mem_ctx,
&connect_handle,
SAMR_DOMAIN_ACCESS_OPEN_ACCOUNT,
domain_sid,
&domain_handle,
&result);
if (any_nt_status_not_ok(status, result, &status)) {
goto out;
}
init_lsa_String(&names, account_name);
status = dcerpc_samr_LookupNames(b, mem_ctx,
&domain_handle,
1,
&names,
&rids,
&types,
&result);
if (any_nt_status_not_ok(status, result, &status)) {
goto out;
}
if (rids.count != 1) {
status = NT_STATUS_NO_SUCH_USER;
goto out;
}
if (types.count != 1) {
status = NT_STATUS_INVALID_PARAMETER;
goto out;
}
if (types.ids[0] != SID_NAME_USER) {
status = NT_STATUS_NO_SUCH_USER;
goto out;
}
rid = rids.ids[0];
status = dcerpc_samr_OpenUser(b, mem_ctx,
&domain_handle,
access_mask,
rid,
user_handle,
&result);
if (any_nt_status_not_ok(status, result, &status)) {
goto out;
}
if (user_rid_p) {
*user_rid_p = rid;
}
if (domain_sid_p) {
*domain_sid_p = domain_sid;
}
out:
if (is_valid_policy_hnd(&domain_handle)) {
dcerpc_samr_Close(b, mem_ctx, &domain_handle, &result);
}
if (is_valid_policy_hnd(&connect_handle)) {
dcerpc_samr_Close(b, mem_ctx, &connect_handle, &result);
}
return status;
}
/******************************************************************
gets a machine password entry. checks access rights of the host.
******************************************************************/
static NTSTATUS get_md4pw(struct samr_Password *md4pw, const char *mach_acct,
enum netr_SchannelType sec_chan_type,
struct dom_sid *sid,
struct messaging_context *msg_ctx)
{
NTSTATUS status;
NTSTATUS result = NT_STATUS_OK;
TALLOC_CTX *mem_ctx = NULL;
struct dcerpc_binding_handle *h = NULL;
struct tsocket_address *local = NULL;
struct policy_handle user_handle = { .handle_type = 0 };
uint32_t user_rid = UINT32_MAX;
struct dom_sid *domain_sid = NULL;
uint32_t acct_ctrl = 0;
union samr_UserInfo *info = NULL;
struct auth_session_info *session_info = NULL;
int rc;
#if 0
/*
* Currently this code is redundant as we already have a filter
* by hostname list. What this code really needs to do is to
* get a hosts allowed/hosts denied list from the SAM database
* on a per user basis, and make the access decision there.
* I will leave this code here for now as a reminder to implement
* this at a later date. JRA.
*/
if (!allow_access(lp_domain_hostsdeny(), lp_domain_hostsallow(),
p->client_id.name,
p->client_id.addr)) {
DEBUG(0,("get_md4pw: Workstation %s denied access to domain\n", mach_acct));
return False;
}
#endif /* 0 */
mem_ctx = talloc_stackframe();
status = make_session_info_system(mem_ctx, &session_info);
if (!NT_STATUS_IS_OK(status)) {
goto out;
}
ZERO_STRUCT(user_handle);
rc = tsocket_address_inet_from_strings(mem_ctx,
"ip",
"127.0.0.1",
0,
&local);
if (rc < 0) {
status = NT_STATUS_NO_MEMORY;
goto out;
}
status = rpcint_binding_handle(mem_ctx,
&ndr_table_samr,
local,
NULL,
session_info,
msg_ctx,
&h);
if (!NT_STATUS_IS_OK(status)) {
goto out;
}
status = samr_find_machine_account(mem_ctx, h, mach_acct,
SEC_FLAG_MAXIMUM_ALLOWED,
&domain_sid, &user_rid,
&user_handle);
if (!NT_STATUS_IS_OK(status)) {
goto out;
}
status = dcerpc_samr_QueryUserInfo2(h,
mem_ctx,
&user_handle,
UserControlInformation,
&info,
&result);
if (any_nt_status_not_ok(status, result, &status)) {
goto out;
}
acct_ctrl = info->info16.acct_flags;
if (acct_ctrl & ACB_DISABLED) {
DEBUG(0,("get_md4pw: Workstation %s: account is disabled\n", mach_acct));
status = NT_STATUS_ACCOUNT_DISABLED;
goto out;
}
if (!(acct_ctrl & ACB_SVRTRUST) &&
!(acct_ctrl & ACB_WSTRUST) &&
!(acct_ctrl & ACB_DOMTRUST))
{
DEBUG(0,("get_md4pw: Workstation %s: account is not a trust account\n", mach_acct));
status = NT_STATUS_NO_TRUST_SAM_ACCOUNT;
goto out;
}
switch (sec_chan_type) {
case SEC_CHAN_BDC:
if (!(acct_ctrl & ACB_SVRTRUST)) {
DEBUG(0,("get_md4pw: Workstation %s: BDC secure channel requested "
"but not a server trust account\n", mach_acct));
status = NT_STATUS_NO_TRUST_SAM_ACCOUNT;
goto out;
}
break;
case SEC_CHAN_WKSTA:
if (!(acct_ctrl & ACB_WSTRUST)) {
DEBUG(0,("get_md4pw: Workstation %s: WORKSTATION secure channel requested "
"but not a workstation trust account\n", mach_acct));
status = NT_STATUS_NO_TRUST_SAM_ACCOUNT;
goto out;
}
break;
case SEC_CHAN_DOMAIN:
if (!(acct_ctrl & ACB_DOMTRUST)) {
DEBUG(0,("get_md4pw: Workstation %s: DOMAIN secure channel requested "
"but not a interdomain trust account\n", mach_acct));
status = NT_STATUS_NO_TRUST_SAM_ACCOUNT;
goto out;
}
break;
default:
break;
}
become_root();
status = dcerpc_samr_QueryUserInfo2(h,
mem_ctx,
&user_handle,
UserInternal1Information,
&info,
&result);
unbecome_root();
if (any_nt_status_not_ok(status, result, &status)) {
goto out;
}
if (info->info18.nt_pwd_active == 0) {
DEBUG(0,("get_md4pw: Workstation %s: account does not have a password\n", mach_acct));
status = NT_STATUS_LOGON_FAILURE;
goto out;
}
/* samr gives out nthash unencrypted (!) */
memcpy(md4pw->hash, info->info18.nt_pwd.hash, 16);
sid_compose(sid, domain_sid, user_rid);
out:
if (h && is_valid_policy_hnd(&user_handle)) {
dcerpc_samr_Close(h, mem_ctx, &user_handle, &result);
}
talloc_free(mem_ctx);
return status;
}
/*************************************************************************
_netr_ServerReqChallenge
*************************************************************************/
NTSTATUS _netr_ServerReqChallenge(struct pipes_struct *p,
struct netr_ServerReqChallenge *r)
{
struct dcesrv_call_state *dce_call = p->dce_call;
struct netlogon_server_pipe_state *pipe_state = NULL;
NTSTATUS status;
pipe_state = dcesrv_iface_state_find_conn(
dce_call,
NETLOGON_SERVER_PIPE_STATE_MAGIC,
struct netlogon_server_pipe_state);
if (pipe_state) {
DEBUG(10,("_netr_ServerReqChallenge: new challenge requested. Clearing old state.\n"));
talloc_free(pipe_state);
}
pipe_state = talloc(p->mem_ctx, struct netlogon_server_pipe_state);
NT_STATUS_HAVE_NO_MEMORY(pipe_state);
pipe_state->client_challenge = *r->in.credentials;
netlogon_creds_random_challenge(&pipe_state->server_challenge);
*r->out.return_credentials = pipe_state->server_challenge;
status = dcesrv_iface_state_store_conn(
dce_call,
NETLOGON_SERVER_PIPE_STATE_MAGIC,
pipe_state);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
return NT_STATUS_OK;
}
/*************************************************************************
_netr_ServerAuthenticate
Create the initial credentials.
*************************************************************************/
NTSTATUS _netr_ServerAuthenticate(struct pipes_struct *p,
struct netr_ServerAuthenticate *r)
{
struct netr_ServerAuthenticate3 a;
uint32_t negotiate_flags = 0;
uint32_t rid;
a.in.server_name = r->in.server_name;
a.in.account_name = r->in.account_name;
a.in.secure_channel_type = r->in.secure_channel_type;
a.in.computer_name = r->in.computer_name;
a.in.credentials = r->in.credentials;
a.in.negotiate_flags = &negotiate_flags;
a.out.return_credentials = r->out.return_credentials;
a.out.rid = &rid;
a.out.negotiate_flags = &negotiate_flags;
return _netr_ServerAuthenticate3(p, &a);
}
/*************************************************************************
_netr_ServerAuthenticate3
*************************************************************************/
NTSTATUS _netr_ServerAuthenticate3(struct pipes_struct *p,
struct netr_ServerAuthenticate3 *r)
{
struct dcesrv_call_state *dce_call = p->dce_call;
NTSTATUS status;
uint32_t srv_flgs;
/* r->in.negotiate_flags is an aliased pointer to r->out.negotiate_flags,
* so use a copy to avoid destroying the client values. */
uint32_t in_neg_flags = *r->in.negotiate_flags;
const char *fn;
struct loadparm_context *lp_ctx = p->dce_call->conn->dce_ctx->lp_ctx;
struct dom_sid sid;
struct samr_Password mach_pwd;
struct netlogon_creds_CredentialState *creds;
struct netlogon_server_pipe_state *pipe_state = NULL;
/* According to Microsoft (see bugid #6099)
* Windows 7 looks at the negotiate_flags
* returned in this structure *even if the
* call fails with access denied* ! So in order
* to allow Win7 to connect to a Samba NT style
* PDC we set the flags before we know if it's
* an error or not.
*/
/* 0x000001ff */
srv_flgs = NETLOGON_NEG_ACCOUNT_LOCKOUT |
NETLOGON_NEG_PERSISTENT_SAMREPL |
NETLOGON_NEG_ARCFOUR |
NETLOGON_NEG_PROMOTION_COUNT |
NETLOGON_NEG_CHANGELOG_BDC |
NETLOGON_NEG_FULL_SYNC_REPL |
NETLOGON_NEG_MULTIPLE_SIDS |
NETLOGON_NEG_REDO |
NETLOGON_NEG_PASSWORD_CHANGE_REFUSAL |
NETLOGON_NEG_PASSWORD_SET2;
/* Ensure we support strong (128-bit) keys. */
if (in_neg_flags & NETLOGON_NEG_STRONG_KEYS) {
srv_flgs |= NETLOGON_NEG_STRONG_KEYS;
}
if (in_neg_flags & NETLOGON_NEG_SUPPORTS_AES) {
srv_flgs |= NETLOGON_NEG_SUPPORTS_AES;
}
if (in_neg_flags & NETLOGON_NEG_SCHANNEL) {
srv_flgs |= NETLOGON_NEG_SCHANNEL;
}
/*
* Support authentication of trusted domains.
*
* These flags are the minimum required set which works with win2k3
* and win2k8.
*/
if (pdb_capabilities() & PDB_CAP_TRUSTED_DOMAINS_EX) {
srv_flgs |= NETLOGON_NEG_TRANSITIVE_TRUSTS |
NETLOGON_NEG_DNS_DOMAIN_TRUSTS |
NETLOGON_NEG_CROSS_FOREST_TRUSTS |
NETLOGON_NEG_NEUTRALIZE_NT4_EMULATION;
}
/*
* If weak crypto is disabled, do not announce that we support RC4.
*/
if (lp_weak_crypto() == SAMBA_WEAK_CRYPTO_DISALLOWED) {
srv_flgs &= ~NETLOGON_NEG_ARCFOUR;
}
switch (dce_call->pkt.u.request.opnum) {
case NDR_NETR_SERVERAUTHENTICATE:
fn = "_netr_ServerAuthenticate";
break;
case NDR_NETR_SERVERAUTHENTICATE2:
fn = "_netr_ServerAuthenticate2";
break;
case NDR_NETR_SERVERAUTHENTICATE3:
fn = "_netr_ServerAuthenticate3";
break;
default:
return NT_STATUS_INTERNAL_ERROR;
}
/* We use this as the key to store the creds: */
/* r->in.computer_name */
pipe_state = dcesrv_iface_state_find_conn(
dce_call,
NETLOGON_SERVER_PIPE_STATE_MAGIC,
struct netlogon_server_pipe_state);
if (!pipe_state) {
DEBUG(0,("%s: no challenge sent to client %s\n", fn,
r->in.computer_name));
status = NT_STATUS_ACCESS_DENIED;
goto out;
}
status = get_md4pw(&mach_pwd,
r->in.account_name,
r->in.secure_channel_type,
&sid, p->msg_ctx);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("%s: failed to get machine password for "
"account %s: %s\n",
fn, r->in.account_name, nt_errstr(status) ));
/* always return NT_STATUS_ACCESS_DENIED */
status = NT_STATUS_ACCESS_DENIED;
goto out;
}
/* From the client / server challenges and md4 password, generate sess key */
/* Check client credentials are valid. */
creds = netlogon_creds_server_init(p->mem_ctx,
r->in.account_name,
r->in.computer_name,
r->in.secure_channel_type,
&pipe_state->client_challenge,
&pipe_state->server_challenge,
&mach_pwd,
r->in.credentials,
r->out.return_credentials,
srv_flgs);
if (!creds) {
DEBUG(0,("%s: netlogon_creds_server_check failed. Rejecting auth "
"request from client %s machine account %s\n",
fn, r->in.computer_name,
r->in.account_name));
status = NT_STATUS_ACCESS_DENIED;
goto out;
}
creds->sid = dom_sid_dup(creds, &sid);
if (!creds->sid) {
status = NT_STATUS_NO_MEMORY;
goto out;
}
/* Store off the state so we can continue after client disconnect. */
become_root();
status = schannel_save_creds_state(p->mem_ctx, lp_ctx, creds);
unbecome_root();
if (!NT_STATUS_IS_OK(status)) {
ZERO_STRUCTP(r->out.return_credentials);
goto out;
}
sid_peek_rid(&sid, r->out.rid);
status = NT_STATUS_OK;
out:
*r->out.negotiate_flags = srv_flgs;
return status;
}
/*************************************************************************
_netr_ServerAuthenticate2
*************************************************************************/
NTSTATUS _netr_ServerAuthenticate2(struct pipes_struct *p,
struct netr_ServerAuthenticate2 *r)
{
struct netr_ServerAuthenticate3 a;
uint32_t rid;
a.in.server_name = r->in.server_name;
a.in.account_name = r->in.account_name;
a.in.secure_channel_type = r->in.secure_channel_type;
a.in.computer_name = r->in.computer_name;
a.in.credentials = r->in.credentials;
a.in.negotiate_flags = r->in.negotiate_flags;
a.out.return_credentials = r->out.return_credentials;
a.out.rid = &rid;
a.out.negotiate_flags = r->out.negotiate_flags;
return _netr_ServerAuthenticate3(p, &a);
}
/*************************************************************************
*************************************************************************/
static NTSTATUS samr_open_machine_account(
struct dcerpc_binding_handle *b,
const struct dom_sid *machine_sid,
uint32_t access_mask,
struct policy_handle *machine_handle)
{
TALLOC_CTX *frame = talloc_stackframe();
struct policy_handle connect_handle = { .handle_type = 0 };
struct policy_handle domain_handle = { .handle_type = 0 };
struct dom_sid domain_sid = *machine_sid;
uint32_t machine_rid;
NTSTATUS result = NT_STATUS_OK;
NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
bool ok;
ok = sid_split_rid(&domain_sid, &machine_rid);
if (!ok) {
goto out;
}
status = dcerpc_samr_Connect2(
b,
frame,
lp_netbios_name(),
SAMR_ACCESS_CONNECT_TO_SERVER |
SAMR_ACCESS_ENUM_DOMAINS |
SAMR_ACCESS_LOOKUP_DOMAIN,
&connect_handle,
&result);
if (any_nt_status_not_ok(status, result, &status)) {
goto out;
}
status = dcerpc_samr_OpenDomain(
b,
frame,
&connect_handle,
SAMR_DOMAIN_ACCESS_OPEN_ACCOUNT,
&domain_sid,
&domain_handle,
&result);
if (any_nt_status_not_ok(status, result, &status)) {
goto out;
}
status = dcerpc_samr_OpenUser(
b,
frame,
&domain_handle,
SEC_FLAG_MAXIMUM_ALLOWED,
machine_rid,
machine_handle,
&result);
if (any_nt_status_not_ok(status, result, &status)) {
goto out;
}
out:
if ((b != NULL) && is_valid_policy_hnd(&domain_handle)) {
dcerpc_samr_Close(b, frame, &domain_handle, &result);
}
if ((b != NULL) && is_valid_policy_hnd(&connect_handle)) {
dcerpc_samr_Close(b, frame, &connect_handle, &result);
}
TALLOC_FREE(frame);
return status;
}
struct _samr_Credentials_t {
enum {
CRED_TYPE_NT_HASH,
CRED_TYPE_PLAIN_TEXT,
} cred_type;
union {
struct samr_Password *nt_hash;
const char *password;
} creds;
};
static NTSTATUS netr_set_machine_account_password(
TALLOC_CTX *mem_ctx,
struct auth_session_info *session_info,
struct messaging_context *msg_ctx,
const struct dom_sid *machine_sid,
struct _samr_Credentials_t *cr)
{
NTSTATUS status;
NTSTATUS result = NT_STATUS_OK;
struct dcerpc_binding_handle *h = NULL;
struct tsocket_address *local;
struct policy_handle user_handle = { .handle_type = 0 };
uint32_t acct_ctrl;
union samr_UserInfo *info;
struct samr_UserInfo18 info18;
struct samr_UserInfo26 info26;
DATA_BLOB in,out;
int rc;
DATA_BLOB session_key;
enum samr_UserInfoLevel infolevel;
TALLOC_CTX *frame = talloc_stackframe();
status = session_extract_session_key(session_info,
&session_key,
KEY_USE_16BYTES);
if (!NT_STATUS_IS_OK(status)) {
goto out;
}
rc = tsocket_address_inet_from_strings(frame,
"ip",
"127.0.0.1",
0,
&local);
if (rc < 0) {
status = NT_STATUS_NO_MEMORY;
goto out;
}
status = rpcint_binding_handle(frame,
&ndr_table_samr,
local,
NULL,
get_session_info_system(),
msg_ctx,
&h);
if (!NT_STATUS_IS_OK(status)) {
goto out;
}
status = samr_open_machine_account(
h, machine_sid, SEC_FLAG_MAXIMUM_ALLOWED, &user_handle);
if (!NT_STATUS_IS_OK(status)) {
goto out;
}
status = dcerpc_samr_QueryUserInfo2(h,
frame,
&user_handle,
UserControlInformation,
&info,
&result);
if (any_nt_status_not_ok(status, result, &status)) {
goto out;
}
acct_ctrl = info->info16.acct_flags;
if (!(acct_ctrl & ACB_WSTRUST ||
acct_ctrl & ACB_SVRTRUST ||
acct_ctrl & ACB_DOMTRUST)) {
status = NT_STATUS_NO_SUCH_USER;
goto out;
}
if (acct_ctrl & ACB_DISABLED) {
status = NT_STATUS_ACCOUNT_DISABLED;
goto out;
}
switch(cr->cred_type) {
case CRED_TYPE_NT_HASH:
ZERO_STRUCT(info18);
infolevel = UserInternal1Information;
in = data_blob_const(cr->creds.nt_hash, 16);
out = data_blob_talloc_zero(frame, 16);
if (out.data == NULL) {
status = NT_STATUS_NO_MEMORY;
goto out;
}
rc = sess_crypt_blob(&out, &in, &session_key, SAMBA_GNUTLS_ENCRYPT);
if (rc != 0) {
status = gnutls_error_to_ntstatus(rc,
NT_STATUS_ACCESS_DISABLED_BY_POLICY_OTHER);
goto out;
}
memcpy(info18.nt_pwd.hash, out.data, out.length);
info18.nt_pwd_active = true;
info->info18 = info18;
break;
case CRED_TYPE_PLAIN_TEXT:
ZERO_STRUCT(info26);
infolevel = UserInternal5InformationNew;
status = init_samr_CryptPasswordEx(cr->creds.password,
&session_key,
&info26.password);
if (!NT_STATUS_IS_OK(status)) {
goto out;
}
info26.password_expired = PASS_DONT_CHANGE_AT_NEXT_LOGON;
info->info26 = info26;
break;
default:
status = NT_STATUS_INTERNAL_ERROR;
goto out;
break;
}
status = dcerpc_samr_SetUserInfo2(h,
frame,
&user_handle,
infolevel,
info,
&result);
if (any_nt_status_not_ok(status, result, &status)) {
goto out;
}
out:
if (h && is_valid_policy_hnd(&user_handle)) {
dcerpc_samr_Close(h, frame, &user_handle, &result);
}
TALLOC_FREE(frame);
return status;
}
/*************************************************************************
_netr_ServerPasswordSet
*************************************************************************/
NTSTATUS _netr_ServerPasswordSet(struct pipes_struct *p,
struct netr_ServerPasswordSet *r)
{
struct dcesrv_call_state *dce_call = p->dce_call;
struct auth_session_info *session_info =
dcesrv_call_session_info(dce_call);
NTSTATUS status = NT_STATUS_OK;
size_t i;
struct netlogon_creds_CredentialState *creds = NULL;
struct _samr_Credentials_t cr = { CRED_TYPE_NT_HASH, {0}};
DEBUG(5,("_netr_ServerPasswordSet: %d\n", __LINE__));
become_root();
status = dcesrv_netr_creds_server_step_check(p->dce_call,
p->mem_ctx,
r->in.computer_name,
r->in.credential,
r->out.return_authenticator,
&creds);
unbecome_root();
if (!NT_STATUS_IS_OK(status)) {
const char *computer_name = "<unknown>";
if (creds != NULL && creds->computer_name != NULL) {
computer_name = creds->computer_name;
}
DEBUG(2,("_netr_ServerPasswordSet: netlogon_creds_server_step failed. Rejecting auth "
"request from client %s machine account %s\n",
r->in.computer_name, computer_name));
TALLOC_FREE(creds);
return status;
}
DEBUG(3,("_netr_ServerPasswordSet: Server Password Set by remote machine:[%s] on account [%s]\n",
r->in.computer_name, creds->computer_name));
status = netlogon_creds_des_decrypt(creds, r->in.new_password);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
DEBUG(100,("_netr_ServerPasswordSet: new given value was :\n"));
for(i = 0; i < sizeof(r->in.new_password->hash); i++)
DEBUG(100,("%02X ", r->in.new_password->hash[i]));
DEBUG(100,("\n"));
cr.creds.nt_hash = r->in.new_password;
status = netr_set_machine_account_password(p->mem_ctx,
session_info,
p->msg_ctx,
creds->sid,
&cr);
return status;
}
/****************************************************************
_netr_ServerPasswordSet2
****************************************************************/
NTSTATUS _netr_ServerPasswordSet2(struct pipes_struct *p,
struct netr_ServerPasswordSet2 *r)
{
struct dcesrv_call_state *dce_call = p->dce_call;
struct auth_session_info *session_info =
dcesrv_call_session_info(dce_call);
NTSTATUS status;
struct netlogon_creds_CredentialState *creds = NULL;
DATA_BLOB plaintext = data_blob_null;
DATA_BLOB new_password = data_blob_null;
size_t confounder_len;
DATA_BLOB dec_blob = data_blob_null;
DATA_BLOB enc_blob = data_blob_null;
struct samr_CryptPassword password_buf;
struct _samr_Credentials_t cr = { CRED_TYPE_PLAIN_TEXT, {0}};
bool ok;
become_root();
status = dcesrv_netr_creds_server_step_check(p->dce_call,
p->mem_ctx,
r->in.computer_name,
r->in.credential,
r->out.return_authenticator,
&creds);
unbecome_root();
if (!NT_STATUS_IS_OK(status)) {
DBG_NOTICE("netlogon_creds_server_step failed. "
"Rejecting auth request from client %s\n",
r->in.computer_name);
TALLOC_FREE(creds);
return status;
}
DBG_NOTICE("Server Password Set2 by remote "
"machine:[%s] on account [%s]\n",
r->in.computer_name,
creds->computer_name != NULL ?
creds->computer_name : "<unknown>");
memcpy(password_buf.data, r->in.new_password->data, 512);
SIVAL(password_buf.data, 512, r->in.new_password->length);
if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
status = netlogon_creds_aes_decrypt(creds,
password_buf.data,
516);
} else {
status = netlogon_creds_arcfour_crypt(creds,
password_buf.data,
516);
}
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(creds);
return status;
}
if (!extract_pw_from_buffer(p->mem_ctx, password_buf.data, &new_password)) {
DEBUG(2,("_netr_ServerPasswordSet2: unable to extract password "
"from a buffer. Rejecting auth request as a wrong password\n"));
TALLOC_FREE(creds);
return NT_STATUS_WRONG_PASSWORD;
}
/*
* Make sure the length field was encrypted,
* otherwise we are under attack.
*/
if (new_password.length == r->in.new_password->length) {
DBG_WARNING("Length[%zu] field not encrypted\n",
new_password.length);
TALLOC_FREE(creds);
return NT_STATUS_WRONG_PASSWORD;
}
/*
* We don't allow empty passwords for machine accounts.
*/
if (new_password.length < 2) {
DBG_WARNING("Empty password Length[%zu]\n",
new_password.length);
TALLOC_FREE(creds);
return NT_STATUS_WRONG_PASSWORD;
}
/*
* Make sure the confounder part of CryptPassword
* buffer was encrypted, otherwise we are under attack.
*/
confounder_len = 512 - new_password.length;
enc_blob = data_blob_const(r->in.new_password->data, confounder_len);
dec_blob = data_blob_const(password_buf.data, confounder_len);
if (confounder_len > 0 && data_blob_equal_const_time(&dec_blob, &enc_blob)) {
DBG_WARNING("Confounder buffer not encrypted Length[%zu]\n",
confounder_len);
TALLOC_FREE(creds);
return NT_STATUS_WRONG_PASSWORD;
}
/*
* Check that the password part was actually encrypted,
* otherwise we are under attack.
*/
enc_blob = data_blob_const(r->in.new_password->data + confounder_len,
new_password.length);
dec_blob = data_blob_const(password_buf.data + confounder_len,
new_password.length);
if (data_blob_equal_const_time(&dec_blob, &enc_blob)) {
DBG_WARNING("Password buffer not encrypted Length[%zu]\n",
new_password.length);
TALLOC_FREE(creds);
return NT_STATUS_WRONG_PASSWORD;
}
/*
* don't allow zero buffers
*/
if (all_zero(new_password.data, new_password.length)) {
DBG_WARNING("Password zero buffer Length[%zu]\n",
new_password.length);
TALLOC_FREE(creds);
return NT_STATUS_WRONG_PASSWORD;
}
/* Convert from UTF16 -> plaintext. */
ok = convert_string_talloc(p->mem_ctx,
CH_UTF16,
CH_UNIX,
new_password.data,
new_password.length,
&plaintext.data,
&plaintext.length);
if (!ok) {
DBG_WARNING("unable to extract password from a buffer. "
"Rejecting auth request as a wrong password\n");
TALLOC_FREE(creds);
return NT_STATUS_WRONG_PASSWORD;
}
/*
* We don't allow empty passwords for machine accounts.
*/
cr.creds.password = (const char*) plaintext.data;
if (strlen(cr.creds.password) == 0) {
DBG_WARNING("Empty plaintext password\n");
TALLOC_FREE(creds);
return NT_STATUS_WRONG_PASSWORD;
}
status = netr_set_machine_account_password(p->mem_ctx,
session_info,
p->msg_ctx,
creds->sid,
&cr);
TALLOC_FREE(creds);
return status;
}
/*************************************************************************
_netr_LogonSamLogoff
*************************************************************************/
NTSTATUS _netr_LogonSamLogoff(struct pipes_struct *p,
struct netr_LogonSamLogoff *r)
{
NTSTATUS status;
struct netlogon_creds_CredentialState *creds;
become_root();
status = dcesrv_netr_creds_server_step_check(p->dce_call,
p->mem_ctx,
r->in.computer_name,
r->in.credential,
r->out.return_authenticator,
&creds);
unbecome_root();
return status;
}
static NTSTATUS _netr_LogonSamLogon_check(const struct netr_LogonSamLogonEx *r)
{
switch (r->in.logon_level) {
case NetlogonInteractiveInformation:
case NetlogonServiceInformation:
case NetlogonInteractiveTransitiveInformation:
case NetlogonServiceTransitiveInformation:
if (r->in.logon->password == NULL) {
return NT_STATUS_INVALID_PARAMETER;
}
switch (r->in.validation_level) {
case NetlogonValidationSamInfo: /* 2 */
case NetlogonValidationSamInfo2: /* 3 */
break;
case NetlogonValidationSamInfo4: /* 6 */
if ((pdb_capabilities() & PDB_CAP_ADS) == 0) {
DEBUG(10,("Not adding validation info level 6 "
"without ADS passdb backend\n"));
return NT_STATUS_INVALID_INFO_CLASS;
}
break;
default:
return NT_STATUS_INVALID_INFO_CLASS;
}
break;
case NetlogonNetworkInformation:
case NetlogonNetworkTransitiveInformation:
if (r->in.logon->network == NULL) {
return NT_STATUS_INVALID_PARAMETER;
}
switch (r->in.validation_level) {
case NetlogonValidationSamInfo: /* 2 */
case NetlogonValidationSamInfo2: /* 3 */
break;
case NetlogonValidationSamInfo4: /* 6 */
if ((pdb_capabilities() & PDB_CAP_ADS) == 0) {
DEBUG(10,("Not adding validation info level 6 "
"without ADS passdb backend\n"));
return NT_STATUS_INVALID_INFO_CLASS;
}
break;
default:
return NT_STATUS_INVALID_INFO_CLASS;
}
break;
case NetlogonGenericInformation:
if (r->in.logon->generic == NULL) {
return NT_STATUS_INVALID_PARAMETER;
}
/* we don't support this here */
return NT_STATUS_INVALID_PARAMETER;
#if 0
switch (r->in.validation_level) {
/* TODO: case NetlogonValidationGenericInfo: 4 */
case NetlogonValidationGenericInfo2: /* 5 */
break;
default:
return NT_STATUS_INVALID_INFO_CLASS;
}
break;
#endif
default:
return NT_STATUS_INVALID_PARAMETER;
}
return NT_STATUS_OK;
}
/*************************************************************************
_netr_LogonSamLogon_base
*************************************************************************/
static NTSTATUS _netr_LogonSamLogon_base(struct pipes_struct *p,
struct netr_LogonSamLogonEx *r,
struct netlogon_creds_CredentialState *creds)
{
struct dcesrv_call_state *dce_call = p->dce_call;
struct dcesrv_connection *dcesrv_conn = dce_call->conn;
const struct tsocket_address *local_address =
dcesrv_connection_get_local_address(dcesrv_conn);
const struct tsocket_address *remote_address =
dcesrv_connection_get_remote_address(dcesrv_conn);
NTSTATUS status = NT_STATUS_OK;
union netr_LogonLevel *logon = r->in.logon;
const char *nt_username, *nt_domain, *nt_workstation;
char *sanitized_username = NULL;
struct auth_usersupplied_info *user_info = NULL;
struct auth_serversupplied_info *server_info = NULL;
struct auth_context *auth_context = NULL;
const char *fn;
enum dcerpc_AuthType auth_type = DCERPC_AUTH_TYPE_NONE;
enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
uint16_t opnum = dce_call->pkt.u.request.opnum;
dcesrv_call_auth_info(dce_call, &auth_type, &auth_level);
#ifdef DEBUG_PASSWORD
logon = netlogon_creds_shallow_copy_logon(p->mem_ctx,
r->in.logon_level,
r->in.logon);
if (logon == NULL) {
logon = r->in.logon;
}
#endif
switch (opnum) {
case NDR_NETR_LOGONSAMLOGON:
fn = "_netr_LogonSamLogon";
/*
* Already called netr_check_schannel() via
* netr_creds_server_step_check()
*/
break;
case NDR_NETR_LOGONSAMLOGONWITHFLAGS:
fn = "_netr_LogonSamLogonWithFlags";
/*
* Already called netr_check_schannel() via
* netr_creds_server_step_check()
*/
break;
case NDR_NETR_LOGONSAMLOGONEX:
fn = "_netr_LogonSamLogonEx";
if (auth_type != DCERPC_AUTH_TYPE_SCHANNEL) {
return NT_STATUS_ACCESS_DENIED;
}
status = dcesrv_netr_check_schannel(p->dce_call,
creds,
auth_type,
auth_level,
opnum);
if (NT_STATUS_IS_ERR(status)) {
return status;
}
break;
default:
return NT_STATUS_INTERNAL_ERROR;
}
*r->out.authoritative = 1; /* authoritative response */
switch (r->in.validation_level) {
case 2:
r->out.validation->sam2 = talloc_zero(p->mem_ctx, struct netr_SamInfo2);
if (!r->out.validation->sam2) {
return NT_STATUS_NO_MEMORY;
}
break;
case 3:
r->out.validation->sam3 = talloc_zero(p->mem_ctx, struct netr_SamInfo3);
if (!r->out.validation->sam3) {
return NT_STATUS_NO_MEMORY;
}
break;
case 6:
r->out.validation->sam6 = talloc_zero(p->mem_ctx, struct netr_SamInfo6);
if (!r->out.validation->sam6) {
return NT_STATUS_NO_MEMORY;
}
break;
default:
DEBUG(0,("%s: bad validation_level value %d.\n",
fn, (int)r->in.validation_level));
return NT_STATUS_INVALID_INFO_CLASS;
}
switch (r->in.logon_level) {
case NetlogonInteractiveInformation:
case NetlogonServiceInformation:
case NetlogonInteractiveTransitiveInformation:
case NetlogonServiceTransitiveInformation:
nt_username = logon->password->identity_info.account_name.string ?
logon->password->identity_info.account_name.string : "";
nt_domain = logon->password->identity_info.domain_name.string ?
logon->password->identity_info.domain_name.string : "";
nt_workstation = logon->password->identity_info.workstation.string ?
logon->password->identity_info.workstation.string : "";
DEBUG(3,("SAM Logon (Interactive). Domain:[%s]. ", lp_workgroup()));
break;
case NetlogonNetworkInformation:
case NetlogonNetworkTransitiveInformation:
nt_username = logon->network->identity_info.account_name.string ?
logon->network->identity_info.account_name.string : "";
nt_domain = logon->network->identity_info.domain_name.string ?
logon->network->identity_info.domain_name.string : "";
nt_workstation = logon->network->identity_info.workstation.string ?
logon->network->identity_info.workstation.string : "";
DEBUG(3,("SAM Logon (Network). Domain:[%s]. ", lp_workgroup()));
break;
default:
DEBUG(2,("SAM Logon: unsupported switch value\n"));
return NT_STATUS_INVALID_INFO_CLASS;
} /* end switch */
DEBUG(3,("User:[%s@%s] Requested Domain:[%s]\n", nt_username, nt_workstation, nt_domain));
DEBUG(5,("Attempting validation level %d for unmapped username %s.\n",
r->in.validation_level, nt_username));
status = netlogon_creds_decrypt_samlogon_logon(creds,
r->in.logon_level,
logon);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
status = make_auth3_context_for_netlogon(talloc_tos(), &auth_context);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
switch (r->in.logon_level) {
case NetlogonNetworkInformation:
case NetlogonNetworkTransitiveInformation:
{
const char *wksname = nt_workstation;
const char *workgroup = lp_workgroup();
bool ok;
ok = auth3_context_set_challenge(
auth_context, logon->network->challenge, "fixed");
if (!ok) {
return NT_STATUS_NO_MEMORY;
}
/* For a network logon, the workstation name comes in with two
* backslashes in the front. Strip them if they are there. */
if (*wksname == '\\') wksname++;
if (*wksname == '\\') wksname++;
/* Standard challenge/response authentication */
if (!make_user_info_netlogon_network(talloc_tos(),
&user_info,
nt_username, nt_domain,
wksname,
remote_address,
local_address,
logon->network->identity_info.parameter_control,
logon->network->lm.data,
logon->network->lm.length,
logon->network->nt.data,
logon->network->nt.length)) {
status = NT_STATUS_NO_MEMORY;
}
if (NT_STATUS_IS_OK(status)) {
status = NTLMv2_RESPONSE_verify_netlogon_creds(
user_info->client.account_name,
user_info->client.domain_name,
user_info->password.response.nt,
creds, workgroup);
}
break;
}
case NetlogonInteractiveInformation:
case NetlogonServiceInformation:
case NetlogonInteractiveTransitiveInformation:
case NetlogonServiceTransitiveInformation:
/* 'Interactive' authentication, supplies the password in its
MD4 form, encrypted with the session key. We will convert
this to challenge/response for the auth subsystem to chew
on */
{
uint8_t chal[8];
#ifdef DEBUG_PASSWORD
if (logon != r->in.logon) {
DEBUG(100,("lm owf password:"));
dump_data(100,
r->in.logon->password->lmpassword.hash, 16);
DEBUG(100,("nt owf password:"));
dump_data(100,
r->in.logon->password->ntpassword.hash, 16);
}
DEBUG(100,("decrypt of lm owf password:"));
dump_data(100, logon->password->lmpassword.hash, 16);
DEBUG(100,("decrypt of nt owf password:"));
dump_data(100, logon->password->ntpassword.hash, 16);
#endif
auth_get_ntlm_challenge(auth_context, chal);
if (!make_user_info_netlogon_interactive(talloc_tos(),
&user_info,
nt_username, nt_domain,
nt_workstation,
remote_address,
local_address,
logon->password->identity_info.parameter_control,
chal,
logon->password->lmpassword.hash,
logon->password->ntpassword.hash)) {
status = NT_STATUS_NO_MEMORY;
}
break;
}
default:
DEBUG(2,("SAM Logon: unsupported switch value\n"));
return NT_STATUS_INVALID_INFO_CLASS;
} /* end switch */
if ( NT_STATUS_IS_OK(status) ) {
status = auth_check_ntlm_password(p->mem_ctx,
auth_context,
user_info,
&server_info,
r->out.authoritative);
}
TALLOC_FREE(auth_context);
TALLOC_FREE(user_info);
DEBUG(5,("%s: check_password returned status %s\n",
fn, nt_errstr(status)));
/* Check account and password */
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(server_info);
return status;
}
if (server_info->guest) {
/* We don't like guest domain logons... */
DEBUG(5,("%s: Attempted domain logon as GUEST "
"denied.\n", fn));
TALLOC_FREE(server_info);
return NT_STATUS_LOGON_FAILURE;
}
sanitized_username = talloc_alpha_strcpy(talloc_tos(),
nt_username,
SAFE_NETBIOS_CHARS "$");
if (sanitized_username == NULL) {
TALLOC_FREE(server_info);
return NT_STATUS_NO_MEMORY;
}
set_current_user_info(sanitized_username,
server_info->unix_name,
server_info->info3->base.logon_domain.string);
TALLOC_FREE(sanitized_username);
/* This is the point at which, if the login was successful, that
the SAM Local Security Authority should record that the user is
logged in to the domain. */
switch (r->in.validation_level) {
case 2:
status = serverinfo_to_SamInfo2(server_info,
r->out.validation->sam2);
break;
case 3:
status = serverinfo_to_SamInfo3(server_info,
r->out.validation->sam3);
break;
case 6: {
/* Only allow this if the pipe is protected. */
if (auth_level < DCERPC_AUTH_LEVEL_PRIVACY) {
DEBUG(0,("netr_Validation6: client %s not using privacy for netlogon\n",
get_remote_machine_name()));
status = NT_STATUS_INVALID_PARAMETER;
break;
}
status = serverinfo_to_SamInfo6(server_info,
r->out.validation->sam6);
break;
}
}
TALLOC_FREE(server_info);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
status = netlogon_creds_encrypt_samlogon_validation(creds,
r->in.validation_level,
r->out.validation);
return status;
}
/****************************************************************
_netr_LogonSamLogonWithFlags
****************************************************************/
NTSTATUS _netr_LogonSamLogonWithFlags(struct pipes_struct *p,
struct netr_LogonSamLogonWithFlags *r)
{
NTSTATUS status;
struct netlogon_creds_CredentialState *creds;
struct netr_LogonSamLogonEx r2;
struct netr_Authenticator return_authenticator;
*r->out.authoritative = true;
r2.in.server_name = r->in.server_name;
r2.in.computer_name = r->in.computer_name;
r2.in.logon_level = r->in.logon_level;
r2.in.logon = r->in.logon;
r2.in.validation_level = r->in.validation_level;
r2.in.flags = r->in.flags;
r2.out.validation = r->out.validation;
r2.out.authoritative = r->out.authoritative;
r2.out.flags = r->out.flags;
status = _netr_LogonSamLogon_check(&r2);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
become_root();
status = dcesrv_netr_creds_server_step_check(p->dce_call,
p->mem_ctx,
r->in.computer_name,
r->in.credential,
&return_authenticator,
&creds);
unbecome_root();
if (!NT_STATUS_IS_OK(status)) {
return status;
}
status = _netr_LogonSamLogon_base(p, &r2, creds);
*r->out.return_authenticator = return_authenticator;
return status;
}
/*************************************************************************
_netr_LogonSamLogon
*************************************************************************/
NTSTATUS _netr_LogonSamLogon(struct pipes_struct *p,
struct netr_LogonSamLogon *r)
{
NTSTATUS status;
struct netr_LogonSamLogonWithFlags r2;
uint32_t flags = 0;
r2.in.server_name = r->in.server_name;
r2.in.computer_name = r->in.computer_name;
r2.in.credential = r->in.credential;
r2.in.logon_level = r->in.logon_level;
r2.in.logon = r->in.logon;
r2.in.validation_level = r->in.validation_level;
r2.in.return_authenticator = r->in.return_authenticator;
r2.in.flags = &flags;
r2.out.validation = r->out.validation;
r2.out.authoritative = r->out.authoritative;
r2.out.flags = &flags;
r2.out.return_authenticator = r->out.return_authenticator;
status = _netr_LogonSamLogonWithFlags(p, &r2);
return status;
}
/*************************************************************************
_netr_LogonSamLogonEx
- no credential chaining. Map into net sam logon.
*************************************************************************/
NTSTATUS _netr_LogonSamLogonEx(struct pipes_struct *p,
struct netr_LogonSamLogonEx *r)
{
NTSTATUS status;
struct netlogon_creds_CredentialState *creds = NULL;
struct loadparm_context *lp_ctx = p->dce_call->conn->dce_ctx->lp_ctx;
*r->out.authoritative = true;
status = _netr_LogonSamLogon_check(r);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
become_root();
status = schannel_get_creds_state(p->mem_ctx, lp_ctx,
r->in.computer_name, &creds);
unbecome_root();
if (!NT_STATUS_IS_OK(status)) {
return status;
}
status = _netr_LogonSamLogon_base(p, r, creds);
TALLOC_FREE(creds);
return status;
}
/*************************************************************************
_ds_enum_dom_trusts
*************************************************************************/
#if 0 /* JERRY -- not correct */
NTSTATUS _ds_enum_dom_trusts(struct pipes_struct *p, DS_Q_ENUM_DOM_TRUSTS *q_u,
DS_R_ENUM_DOM_TRUSTS *r_u)
{
NTSTATUS status = NT_STATUS_OK;
/* TODO: According to MSDN, the can only be executed against a
DC or domain member running Windows 2000 or later. Need
to test against a standalone 2k server and see what it
does. A windows 2000 DC includes its own domain in the
list. --jerry */
return status;
}
#endif /* JERRY */
/****************************************************************
****************************************************************/
WERROR _netr_LogonUasLogon(struct pipes_struct *p,
struct netr_LogonUasLogon *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
WERROR _netr_LogonUasLogoff(struct pipes_struct *p,
struct netr_LogonUasLogoff *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
NTSTATUS _netr_DatabaseDeltas(struct pipes_struct *p,
struct netr_DatabaseDeltas *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return NT_STATUS_NOT_IMPLEMENTED;
}
/****************************************************************
****************************************************************/
NTSTATUS _netr_DatabaseSync(struct pipes_struct *p,
struct netr_DatabaseSync *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return NT_STATUS_NOT_IMPLEMENTED;
}
/****************************************************************
****************************************************************/
NTSTATUS _netr_AccountDeltas(struct pipes_struct *p,
struct netr_AccountDeltas *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return NT_STATUS_NOT_IMPLEMENTED;
}
/****************************************************************
****************************************************************/
NTSTATUS _netr_AccountSync(struct pipes_struct *p,
struct netr_AccountSync *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return NT_STATUS_NOT_IMPLEMENTED;
}
/****************************************************************
****************************************************************/
static bool wb_getdcname(TALLOC_CTX *mem_ctx,
const char *domain,
const char **dcname,
uint32_t flags,
WERROR *werr)
{
wbcErr result;
struct wbcDomainControllerInfo *dc_info = NULL;
result = wbcLookupDomainController(domain,
flags,
&dc_info);
switch (result) {
case WBC_ERR_SUCCESS:
break;
case WBC_ERR_WINBIND_NOT_AVAILABLE:
return false;
case WBC_ERR_DOMAIN_NOT_FOUND:
*werr = WERR_NO_SUCH_DOMAIN;
return true;
default:
*werr = WERR_DOMAIN_CONTROLLER_NOT_FOUND;
return true;
}
*dcname = talloc_strdup(mem_ctx, dc_info->dc_name);
wbcFreeMemory(dc_info);
if (!*dcname) {
*werr = WERR_NOT_ENOUGH_MEMORY;
return false;
}
*werr = WERR_OK;
return true;
}
/****************************************************************
_netr_GetDcName
****************************************************************/
WERROR _netr_GetDcName(struct pipes_struct *p,
struct netr_GetDcName *r)
{
NTSTATUS status;
WERROR werr;
uint32_t flags;
struct netr_DsRGetDCNameInfo *info;
bool ret;
ret = wb_getdcname(p->mem_ctx,
r->in.domainname,
r->out.dcname,
WBC_LOOKUP_DC_IS_FLAT_NAME |
WBC_LOOKUP_DC_RETURN_FLAT_NAME |
WBC_LOOKUP_DC_PDC_REQUIRED,
&werr);
if (ret == true) {
return werr;
}
flags = DS_PDC_REQUIRED | DS_IS_FLAT_NAME | DS_RETURN_FLAT_NAME;
status = dsgetdcname(p->mem_ctx,
p->msg_ctx,
r->in.domainname,
NULL,
NULL,
flags,
&info);
if (!NT_STATUS_IS_OK(status)) {
return ntstatus_to_werror(status);
}
*r->out.dcname = talloc_strdup(p->mem_ctx, info->dc_unc);
talloc_free(info);
if (!*r->out.dcname) {
return WERR_NOT_ENOUGH_MEMORY;
}
return WERR_OK;
}
/****************************************************************
_netr_GetAnyDCName
****************************************************************/
WERROR _netr_GetAnyDCName(struct pipes_struct *p,
struct netr_GetAnyDCName *r)
{
NTSTATUS status;
WERROR werr;
uint32_t flags;
struct netr_DsRGetDCNameInfo *info;
bool ret;
ret = wb_getdcname(p->mem_ctx,
r->in.domainname,
r->out.dcname,
WBC_LOOKUP_DC_IS_FLAT_NAME |
WBC_LOOKUP_DC_RETURN_FLAT_NAME,
&werr);
if (ret == true) {
return werr;
}
flags = DS_IS_FLAT_NAME | DS_RETURN_FLAT_NAME;
status = dsgetdcname(p->mem_ctx,
p->msg_ctx,
r->in.domainname,
NULL,
NULL,
flags,
&info);
if (!NT_STATUS_IS_OK(status)) {
return ntstatus_to_werror(status);
}
*r->out.dcname = talloc_strdup(p->mem_ctx, info->dc_unc);
talloc_free(info);
if (!*r->out.dcname) {
return WERR_NOT_ENOUGH_MEMORY;
}
return WERR_OK;
}
/****************************************************************
****************************************************************/
NTSTATUS _netr_DatabaseSync2(struct pipes_struct *p,
struct netr_DatabaseSync2 *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return NT_STATUS_NOT_IMPLEMENTED;
}
/****************************************************************
****************************************************************/
NTSTATUS _netr_DatabaseRedo(struct pipes_struct *p,
struct netr_DatabaseRedo *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return NT_STATUS_NOT_IMPLEMENTED;
}
/****************************************************************
****************************************************************/
WERROR _netr_DsRGetDCName(struct pipes_struct *p,
struct netr_DsRGetDCName *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
NTSTATUS _netr_LogonGetCapabilities(struct pipes_struct *p,
struct netr_LogonGetCapabilities *r)
{
struct netlogon_creds_CredentialState *creds;
NTSTATUS status;
switch (r->in.query_level) {
case 1:
break;
case 2:
/*
* Until we know the details behind KB5028166
* just return DCERPC_NCA_S_FAULT_INVALID_TAG
* like an unpatched Windows Server.
*/
FALL_THROUGH;
default:
/*
* There would not be a way to marshall the
* the response. Which would mean our final
* ndr_push would fail an we would return
* an RPC-level fault with DCERPC_FAULT_BAD_STUB_DATA.
*
* But it's important to match a Windows server
* especially before KB5028166, see also our bug #15418
* Otherwise Windows client would stop talking to us.
*/
p->fault_state = DCERPC_NCA_S_FAULT_INVALID_TAG;
return NT_STATUS_NOT_SUPPORTED;
}
become_root();
status = dcesrv_netr_creds_server_step_check(p->dce_call,
p->mem_ctx,
r->in.computer_name,
r->in.credential,
r->out.return_authenticator,
&creds);
unbecome_root();
if (!NT_STATUS_IS_OK(status)) {
return status;
}
r->out.capabilities->server_capabilities = creds->negotiate_flags;
return NT_STATUS_OK;
}
/****************************************************************
****************************************************************/
WERROR _netr_NETRLOGONSETSERVICEBITS(struct pipes_struct *p,
struct netr_NETRLOGONSETSERVICEBITS *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
WERROR _netr_LogonGetTrustRid(struct pipes_struct *p,
struct netr_LogonGetTrustRid *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
WERROR _netr_NETRLOGONCOMPUTESERVERDIGEST(struct pipes_struct *p,
struct netr_NETRLOGONCOMPUTESERVERDIGEST *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
WERROR _netr_NETRLOGONCOMPUTECLIENTDIGEST(struct pipes_struct *p,
struct netr_NETRLOGONCOMPUTECLIENTDIGEST *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
WERROR _netr_DsRGetDCNameEx(struct pipes_struct *p,
struct netr_DsRGetDCNameEx *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
WERROR _netr_DsRGetSiteName(struct pipes_struct *p,
struct netr_DsRGetSiteName *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
NTSTATUS _netr_LogonGetDomainInfo(struct pipes_struct *p,
struct netr_LogonGetDomainInfo *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return NT_STATUS_NOT_IMPLEMENTED;
}
/****************************************************************
****************************************************************/
NTSTATUS _netr_ServerPasswordGet(struct pipes_struct *p,
struct netr_ServerPasswordGet *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return NT_STATUS_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
NTSTATUS _netr_NetrLogonSendToSam(struct pipes_struct *p,
struct netr_NetrLogonSendToSam *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return NT_STATUS_NOT_IMPLEMENTED;
}
/****************************************************************
****************************************************************/
WERROR _netr_DsRAddressToSitenamesW(struct pipes_struct *p,
struct netr_DsRAddressToSitenamesW *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
WERROR _netr_DsRGetDCNameEx2(struct pipes_struct *p,
struct netr_DsRGetDCNameEx2 *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
WERROR _netr_NETRLOGONGETTIMESERVICEPARENTDOMAIN(struct pipes_struct *p,
struct netr_NETRLOGONGETTIMESERVICEPARENTDOMAIN *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
WERROR _netr_NetrEnumerateTrustedDomainsEx(struct pipes_struct *p,
struct netr_NetrEnumerateTrustedDomainsEx *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
WERROR _netr_DsRAddressToSitenamesExW(struct pipes_struct *p,
struct netr_DsRAddressToSitenamesExW *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
WERROR _netr_DsrGetDcSiteCoverageW(struct pipes_struct *p,
struct netr_DsrGetDcSiteCoverageW *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
WERROR _netr_DsrEnumerateDomainTrusts(struct pipes_struct *p,
struct netr_DsrEnumerateDomainTrusts *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
WERROR _netr_DsrDeregisterDNSHostRecords(struct pipes_struct *p,
struct netr_DsrDeregisterDNSHostRecords *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
****************************************************************/
NTSTATUS _netr_ServerTrustPasswordsGet(struct pipes_struct *p,
struct netr_ServerTrustPasswordsGet *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return NT_STATUS_NOT_IMPLEMENTED;
}
/****************************************************************
****************************************************************/
static NTSTATUS fill_forest_trust_array(TALLOC_CTX *mem_ctx,
struct lsa_ForestTrustInformation *info)
{
struct lsa_ForestTrustRecord *e;
struct pdb_domain_info *dom_info;
struct lsa_ForestTrustDomainInfo *domain_info;
char **upn_suffixes = NULL;
uint32_t num_suffixes = 0;
uint32_t i = 0;
NTSTATUS status;
dom_info = pdb_get_domain_info(mem_ctx);
if (dom_info == NULL) {
return NT_STATUS_NO_MEMORY;
}
info->count = 2;
become_root();
status = pdb_enum_upn_suffixes(info, &num_suffixes, &upn_suffixes);
unbecome_root();
if (NT_STATUS_IS_OK(status) && (num_suffixes > 0)) {
info->count += num_suffixes;
}
info->entries = talloc_array(info, struct lsa_ForestTrustRecord *, info->count);
if (info->entries == NULL) {
return NT_STATUS_NO_MEMORY;
}
e = talloc(info, struct lsa_ForestTrustRecord);
if (e == NULL) {
return NT_STATUS_NO_MEMORY;
}
e->flags = 0;
e->type = LSA_FOREST_TRUST_TOP_LEVEL_NAME;
e->time = 0; /* so far always 0 in trces. */
e->forest_trust_data.top_level_name.string = talloc_steal(info,
dom_info->dns_forest);
info->entries[0] = e;
if (num_suffixes > 0) {
for (i = 0; i < num_suffixes ; i++) {
e = talloc(info, struct lsa_ForestTrustRecord);
if (e == NULL) {
return NT_STATUS_NO_MEMORY;
}
e->flags = 0;
e->type = LSA_FOREST_TRUST_TOP_LEVEL_NAME;
e->time = 0; /* so far always 0 in traces. */
e->forest_trust_data.top_level_name.string = upn_suffixes[i];
info->entries[1 + i] = e;
}
}
e = talloc(info, struct lsa_ForestTrustRecord);
if (e == NULL) {
return NT_STATUS_NO_MEMORY;
}
/* TODO: check if disabled and set flags accordingly */
e->flags = 0;
e->type = LSA_FOREST_TRUST_DOMAIN_INFO;
e->time = 0; /* so far always 0 in traces. */
domain_info = &e->forest_trust_data.domain_info;
domain_info->domain_sid = dom_sid_dup(info, &dom_info->sid);
domain_info->dns_domain_name.string = talloc_steal(info,
dom_info->dns_domain);
domain_info->netbios_domain_name.string = talloc_steal(info,
dom_info->name);
info->entries[info->count - 1] = e;
return NT_STATUS_OK;
}
/****************************************************************
****************************************************************/
WERROR _netr_DsRGetForestTrustInformation(struct pipes_struct *p,
struct netr_DsRGetForestTrustInformation *r)
{
struct dcesrv_call_state *dce_call = p->dce_call;
struct auth_session_info *session_info =
dcesrv_call_session_info(dce_call);
NTSTATUS status;
struct lsa_ForestTrustInformation *info, **info_ptr;
enum security_user_level security_level;
security_level = security_session_user_level(session_info, NULL);
if (security_level < SECURITY_USER) {
return WERR_ACCESS_DENIED;
}
if (r->in.flags & (~DS_GFTI_UPDATE_TDO)) {
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_INVALID_FLAGS;
}
if ((r->in.flags & DS_GFTI_UPDATE_TDO) && (lp_server_role() != ROLE_DOMAIN_PDC)) {
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NERR_NOTPRIMARY;
}
if ((r->in.trusted_domain_name == NULL) && (r->in.flags & DS_GFTI_UPDATE_TDO)) {
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_INVALID_PARAMETER;
}
/* retrieve forest trust information and stop further processing */
if (r->in.trusted_domain_name == NULL) {
info_ptr = talloc(p->mem_ctx, struct lsa_ForestTrustInformation *);
if (info_ptr == NULL) {
p->fault_state = DCERPC_FAULT_CANT_PERFORM;
return WERR_NOT_ENOUGH_MEMORY;
}
info = talloc_zero(info_ptr, struct lsa_ForestTrustInformation);
if (info == NULL) {
p->fault_state = DCERPC_FAULT_CANT_PERFORM;
return WERR_NOT_ENOUGH_MEMORY;
}
/* Fill forest trust information and expand UPN suffixes list */
status = fill_forest_trust_array(p->mem_ctx, info);
if (!NT_STATUS_IS_OK(status)) {
p->fault_state = DCERPC_FAULT_CANT_PERFORM;
return WERR_NOT_ENOUGH_MEMORY;
}
*info_ptr = info;
r->out.forest_trust_info = info_ptr;
return WERR_OK;
}
/* TODO: implement remaining parts of DsrGetForestTrustInformation (opnum 43)
* when trusted_domain_name is not NULL */
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return WERR_NOT_SUPPORTED;
}
/****************************************************************
_netr_GetForestTrustInformation
****************************************************************/
NTSTATUS _netr_GetForestTrustInformation(struct pipes_struct *p,
struct netr_GetForestTrustInformation *r)
{
NTSTATUS status;
struct netlogon_creds_CredentialState *creds;
struct lsa_ForestTrustInformation *info, **info_ptr;
/* TODO: check server name */
become_root();
status = dcesrv_netr_creds_server_step_check(p->dce_call,
p->mem_ctx,
r->in.computer_name,
r->in.credential,
r->out.return_authenticator,
&creds);
unbecome_root();
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if ((creds->secure_channel_type != SEC_CHAN_DNS_DOMAIN) &&
(creds->secure_channel_type != SEC_CHAN_DOMAIN)) {
return NT_STATUS_NOT_IMPLEMENTED;
}
info_ptr = talloc(p->mem_ctx, struct lsa_ForestTrustInformation *);
if (!info_ptr) {
return NT_STATUS_NO_MEMORY;
}
info = talloc_zero(info_ptr, struct lsa_ForestTrustInformation);
if (!info) {
return NT_STATUS_NO_MEMORY;
}
/* Fill forest trust information, do expand UPN suffixes list */
status = fill_forest_trust_array(p->mem_ctx, info);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
*info_ptr = info;
r->out.forest_trust_info = info_ptr;
return NT_STATUS_OK;
}
/****************************************************************
****************************************************************/
static NTSTATUS get_password_from_trustAuth(TALLOC_CTX *mem_ctx,
const DATA_BLOB *trustAuth_blob,
struct netlogon_creds_CredentialState *creds,
struct samr_Password *current_pw_enc,
struct samr_Password *previous_pw_enc)
{
enum ndr_err_code ndr_err;
struct trustAuthInOutBlob trustAuth;
NTSTATUS status;
ndr_err = ndr_pull_struct_blob_all(trustAuth_blob, mem_ctx, &trustAuth,
(ndr_pull_flags_fn_t)ndr_pull_trustAuthInOutBlob);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
return NT_STATUS_UNSUCCESSFUL;
}
if (trustAuth.count != 0 && trustAuth.current.count != 0 &&
trustAuth.current.array[0].AuthType == TRUST_AUTH_TYPE_CLEAR) {
mdfour(current_pw_enc->hash,
trustAuth.current.array[0].AuthInfo.clear.password,
trustAuth.current.array[0].AuthInfo.clear.size);
status = netlogon_creds_des_encrypt(creds, current_pw_enc);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
} else {
return NT_STATUS_UNSUCCESSFUL;
}
if (trustAuth.previous.count != 0 &&
trustAuth.previous.array[0].AuthType == TRUST_AUTH_TYPE_CLEAR) {
mdfour(previous_pw_enc->hash,
trustAuth.previous.array[0].AuthInfo.clear.password,
trustAuth.previous.array[0].AuthInfo.clear.size);
status = netlogon_creds_des_encrypt(creds, previous_pw_enc);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
} else {
ZERO_STRUCTP(previous_pw_enc);
}
return NT_STATUS_OK;
}
/****************************************************************
_netr_ServerGetTrustInfo
****************************************************************/
NTSTATUS _netr_ServerGetTrustInfo(struct pipes_struct *p,
struct netr_ServerGetTrustInfo *r)
{
NTSTATUS status;
struct netlogon_creds_CredentialState *creds;
char *account_name;
size_t account_name_last;
bool trusted;
struct netr_TrustInfo *trust_info;
struct pdb_trusted_domain *td;
/* TODO: check server name */
become_root();
status = dcesrv_netr_creds_server_step_check(p->dce_call,
p->mem_ctx,
r->in.computer_name,
r->in.credential,
r->out.return_authenticator,
&creds);
unbecome_root();
if (!NT_STATUS_IS_OK(status)) {
return status;
}
account_name = talloc_strdup(p->mem_ctx, r->in.account_name);
if (account_name == NULL) {
return NT_STATUS_NO_MEMORY;
}
account_name_last = strlen(account_name);
if (account_name_last == 0) {
return NT_STATUS_INVALID_PARAMETER;
}
account_name_last--;
if (account_name[account_name_last] == '.') {
account_name[account_name_last] = '\0';
}
if ((creds->secure_channel_type != SEC_CHAN_DNS_DOMAIN) &&
(creds->secure_channel_type != SEC_CHAN_DOMAIN)) {
trusted = false;
} else {
trusted = true;
}
if (trusted) {
account_name_last = strlen(account_name);
if (account_name_last == 0) {
return NT_STATUS_INVALID_PARAMETER;
}
account_name_last--;
if (account_name[account_name_last] == '$') {
account_name[account_name_last] = '\0';
}
status = pdb_get_trusted_domain(p->mem_ctx, account_name, &td);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if (r->out.trust_info != NULL) {
trust_info = talloc_zero(p->mem_ctx, struct netr_TrustInfo);
if (trust_info == NULL) {
return NT_STATUS_NO_MEMORY;
}
trust_info->count = 1;
trust_info->data = talloc_array(trust_info, uint32_t, 1);
if (trust_info->data == NULL) {
return NT_STATUS_NO_MEMORY;
}
trust_info->data[0] = td->trust_attributes;
*r->out.trust_info = trust_info;
}
if (td->trust_auth_incoming.data == NULL) {
return NT_STATUS_INVALID_PARAMETER;
}
status = get_password_from_trustAuth(p->mem_ctx,
&td->trust_auth_incoming,
creds,
r->out.new_owf_password,
r->out.old_owf_password);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
} else {
/* TODO: look for machine password */
ZERO_STRUCTP(r->out.new_owf_password);
ZERO_STRUCTP(r->out.old_owf_password);
return NT_STATUS_NOT_IMPLEMENTED;
}
return NT_STATUS_OK;
}
/****************************************************************
****************************************************************/
NTSTATUS _netr_Unused47(struct pipes_struct *p,
struct netr_Unused47 *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return NT_STATUS_NOT_IMPLEMENTED;
}
/****************************************************************
****************************************************************/
NTSTATUS _netr_DsrUpdateReadOnlyServerDnsRecords(struct pipes_struct *p,
struct netr_DsrUpdateReadOnlyServerDnsRecords *r)
{
p->fault_state = DCERPC_FAULT_OP_RNG_ERROR;
return NT_STATUS_NOT_IMPLEMENTED;
}
/*
* Define the bind function that will be used by ndr_netlogon_scompat.c,
* included at the bottom of this file.
*/
#define DCESRV_INTERFACE_NETLOGON_BIND(context, iface) \
dcesrv_interface_netlogon_bind(context, iface)
static NTSTATUS dcesrv_interface_netlogon_bind(struct dcesrv_connection_context *context,
const struct dcesrv_interface *iface)
{
struct loadparm_context *lp_ctx = context->conn->dce_ctx->lp_ctx;
int schannel = lpcfg_server_schannel(lp_ctx);
bool schannel_global_required = (schannel == true);
bool global_require_seal = lpcfg_server_schannel_require_seal(lp_ctx);
static bool warned_global_schannel_once = false;
static bool warned_global_seal_once = false;
if (!schannel_global_required && !warned_global_schannel_once) {
/*
* We want admins to notice their misconfiguration!
*/
D_ERR("CVE-2020-1472(ZeroLogon): "
"Please configure 'server schannel = yes' (the default), "
"See https://bugzilla.samba.org/show_bug.cgi?id=14497\n");
warned_global_schannel_once = true;
}
if (!global_require_seal && !warned_global_seal_once) {
/*
* We want admins to notice their misconfiguration!
*/
D_ERR("CVE-2022-38023 (and others): "
"Please configure 'server schannel require seal = yes' (the default), "
"See https://bugzilla.samba.org/show_bug.cgi?id=15240\n");
warned_global_seal_once = true;
}
return NT_STATUS_OK;
}
/* include the generated boilerplate */
#include "librpc/gen_ndr/ndr_netlogon_scompat.c"
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