/*
Unix SMB/CIFS implementation.
dsgetdcname
Copyright (C) Gerald Carter 2006
Copyright (C) Guenther Deschner 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 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 .
*/
#include "includes.h"
#define DSGETDCNAME_FMT "DSGETDCNAME/DOMAIN/%s"
/* 15 minutes */
#define DSGETDCNAME_CACHE_TTL 60*15
struct ip_service_name {
struct sockaddr_storage ss;
unsigned port;
const char *hostname;
};
/****************************************************************
****************************************************************/
void debug_dsdcinfo_flags(int lvl, uint32_t flags)
{
DEBUG(lvl,("debug_dsdcinfo_flags: 0x%08x\n\t", flags));
if (flags & DS_FORCE_REDISCOVERY)
DEBUGADD(lvl,("DS_FORCE_REDISCOVERY "));
if (flags & 0x000000002)
DEBUGADD(lvl,("0x00000002 "));
if (flags & 0x000000004)
DEBUGADD(lvl,("0x00000004 "));
if (flags & 0x000000008)
DEBUGADD(lvl,("0x00000008 "));
if (flags & DS_DIRECTORY_SERVICE_REQUIRED)
DEBUGADD(lvl,("DS_DIRECTORY_SERVICE_REQUIRED "));
if (flags & DS_DIRECTORY_SERVICE_PREFERRED)
DEBUGADD(lvl,("DS_DIRECTORY_SERVICE_PREFERRED "));
if (flags & DS_GC_SERVER_REQUIRED)
DEBUGADD(lvl,("DS_GC_SERVER_REQUIRED "));
if (flags & DS_PDC_REQUIRED)
DEBUGADD(lvl,("DS_PDC_REQUIRED "));
if (flags & DS_BACKGROUND_ONLY)
DEBUGADD(lvl,("DS_BACKGROUND_ONLY "));
if (flags & DS_IP_REQUIRED)
DEBUGADD(lvl,("DS_IP_REQUIRED "));
if (flags & DS_KDC_REQUIRED)
DEBUGADD(lvl,("DS_KDC_REQUIRED "));
if (flags & DS_TIMESERV_REQUIRED)
DEBUGADD(lvl,("DS_TIMESERV_REQUIRED "));
if (flags & DS_WRITABLE_REQUIRED)
DEBUGADD(lvl,("DS_WRITABLE_REQUIRED "));
if (flags & DS_GOOD_TIMESERV_PREFERRED)
DEBUGADD(lvl,("DS_GOOD_TIMESERV_PREFERRED "));
if (flags & DS_AVOID_SELF)
DEBUGADD(lvl,("DS_AVOID_SELF "));
if (flags & DS_ONLY_LDAP_NEEDED)
DEBUGADD(lvl,("DS_ONLY_LDAP_NEEDED "));
if (flags & DS_IS_FLAT_NAME)
DEBUGADD(lvl,("DS_IS_FLAT_NAME "));
if (flags & DS_IS_DNS_NAME)
DEBUGADD(lvl,("DS_IS_DNS_NAME "));
if (flags & 0x00040000)
DEBUGADD(lvl,("0x00040000 "));
if (flags & 0x00080000)
DEBUGADD(lvl,("0x00080000 "));
if (flags & 0x00100000)
DEBUGADD(lvl,("0x00100000 "));
if (flags & 0x00200000)
DEBUGADD(lvl,("0x00200000 "));
if (flags & 0x00400000)
DEBUGADD(lvl,("0x00400000 "));
if (flags & 0x00800000)
DEBUGADD(lvl,("0x00800000 "));
if (flags & 0x01000000)
DEBUGADD(lvl,("0x01000000 "));
if (flags & 0x02000000)
DEBUGADD(lvl,("0x02000000 "));
if (flags & 0x04000000)
DEBUGADD(lvl,("0x04000000 "));
if (flags & 0x08000000)
DEBUGADD(lvl,("0x08000000 "));
if (flags & 0x10000000)
DEBUGADD(lvl,("0x10000000 "));
if (flags & 0x20000000)
DEBUGADD(lvl,("0x20000000 "));
if (flags & DS_RETURN_DNS_NAME)
DEBUGADD(lvl,("DS_RETURN_DNS_NAME "));
if (flags & DS_RETURN_FLAT_NAME)
DEBUGADD(lvl,("DS_RETURN_FLAT_NAME "));
if (flags)
DEBUGADD(lvl,("\n"));
}
/****************************************************************
****************************************************************/
static char *dsgetdcname_cache_key(TALLOC_CTX *mem_ctx, const char *domain)
{
if (!mem_ctx || !domain) {
return NULL;
}
return talloc_asprintf_strupper_m(mem_ctx, DSGETDCNAME_FMT, domain);
}
/****************************************************************
****************************************************************/
static NTSTATUS dsgetdcname_cache_delete(TALLOC_CTX *mem_ctx,
const char *domain_name)
{
char *key;
if (!gencache_init()) {
return NT_STATUS_INTERNAL_DB_ERROR;
}
key = dsgetdcname_cache_key(mem_ctx, domain_name);
if (!key) {
return NT_STATUS_NO_MEMORY;
}
if (!gencache_del(key)) {
return NT_STATUS_UNSUCCESSFUL;
}
return NT_STATUS_OK;
}
/****************************************************************
****************************************************************/
static NTSTATUS dsgetdcname_cache_store(TALLOC_CTX *mem_ctx,
const char *domain_name,
struct netr_DsRGetDCNameInfo *info)
{
time_t expire_time;
char *key;
bool ret = false;
DATA_BLOB blob;
enum ndr_err_code ndr_err;
if (!gencache_init()) {
return NT_STATUS_INTERNAL_DB_ERROR;
}
key = dsgetdcname_cache_key(mem_ctx, domain_name);
if (!key) {
return NT_STATUS_NO_MEMORY;
}
expire_time = time(NULL) + DSGETDCNAME_CACHE_TTL;
ndr_err = ndr_push_struct_blob(&blob, mem_ctx, info,
(ndr_push_flags_fn_t)ndr_push_netr_DsRGetDCNameInfo);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
return ndr_map_error2ntstatus(ndr_err);
}
if (gencache_lock_entry(key) != 0) {
data_blob_free(&blob);
return NT_STATUS_LOCK_NOT_GRANTED;
}
ret = gencache_set_data_blob(key, &blob, expire_time);
data_blob_free(&blob);
gencache_unlock_entry(key);
return ret ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
}
/****************************************************************
****************************************************************/
static NTSTATUS dsgetdcname_cache_refresh(TALLOC_CTX *mem_ctx,
const char *domain_name,
struct GUID *domain_guid,
uint32_t flags,
const char *site_name,
struct netr_DsRGetDCNameInfo *info)
{
struct nbt_cldap_netlogon_5 r;
/* check if matching entry is older then 15 minutes, if yes, send
* CLDAP/MAILSLOT ping again and store the cached data */
ZERO_STRUCT(r);
if (ads_cldap_netlogon(mem_ctx, info->dc_unc,
info->domain_name, &r)) {
dsgetdcname_cache_delete(mem_ctx, domain_name);
return dsgetdcname_cache_store(mem_ctx,
info->domain_name,
info);
}
return NT_STATUS_INVALID_NETWORK_RESPONSE;
}
/****************************************************************
****************************************************************/
#define RETURN_ON_FALSE(x) if (!x) return false;
static bool check_cldap_reply_required_flags(uint32_t ret_flags,
uint32_t req_flags)
{
if (req_flags & DS_PDC_REQUIRED)
RETURN_ON_FALSE(ret_flags & NBT_SERVER_PDC);
if (req_flags & DS_GC_SERVER_REQUIRED)
RETURN_ON_FALSE(ret_flags & NBT_SERVER_GC);
if (req_flags & DS_ONLY_LDAP_NEEDED)
RETURN_ON_FALSE(ret_flags & NBT_SERVER_LDAP);
if ((req_flags & DS_DIRECTORY_SERVICE_REQUIRED) ||
(req_flags & DS_DIRECTORY_SERVICE_PREFERRED))
RETURN_ON_FALSE(ret_flags & NBT_SERVER_DS);
if (req_flags & DS_KDC_REQUIRED)
RETURN_ON_FALSE(ret_flags & NBT_SERVER_KDC);
if (req_flags & DS_TIMESERV_REQUIRED)
RETURN_ON_FALSE(ret_flags & NBT_SERVER_TIMESERV);
if (req_flags & DS_WRITABLE_REQUIRED)
RETURN_ON_FALSE(ret_flags & NBT_SERVER_WRITABLE);
return true;
}
/****************************************************************
****************************************************************/
static NTSTATUS dsgetdcname_cache_fetch(TALLOC_CTX *mem_ctx,
const char *domain_name,
struct GUID *domain_guid,
uint32_t flags,
const char *site_name,
struct netr_DsRGetDCNameInfo **info_p,
bool *expired)
{
char *key;
DATA_BLOB blob;
enum ndr_err_code ndr_err;
struct netr_DsRGetDCNameInfo *info;
if (!gencache_init()) {
return NT_STATUS_INTERNAL_DB_ERROR;
}
key = dsgetdcname_cache_key(mem_ctx, domain_name);
if (!key) {
return NT_STATUS_NO_MEMORY;
}
if (!gencache_get_data_blob(key, &blob, expired)) {
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
info = TALLOC_ZERO_P(mem_ctx, struct netr_DsRGetDCNameInfo);
if (!info) {
return NT_STATUS_NO_MEMORY;
}
ndr_err = ndr_pull_struct_blob(&blob, mem_ctx, info,
(ndr_pull_flags_fn_t)ndr_pull_netr_DsRGetDCNameInfo);
data_blob_free(&blob);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
dsgetdcname_cache_delete(mem_ctx, domain_name);
return ndr_map_error2ntstatus(ndr_err);
}
if (DEBUGLEVEL >= 10) {
NDR_PRINT_DEBUG(netr_DsRGetDCNameInfo, info);
}
/* check flags */
if (!check_cldap_reply_required_flags(info->dc_flags, flags)) {
DEBUG(10,("invalid flags\n"));
return NT_STATUS_INVALID_PARAMETER;
}
if ((flags & DS_IP_REQUIRED) &&
(info->dc_address_type != DS_ADDRESS_TYPE_INET)) {
return NT_STATUS_INVALID_PARAMETER_MIX;
}
*info_p = info;
return NT_STATUS_OK;
}
/****************************************************************
****************************************************************/
static NTSTATUS dsgetdcname_cached(TALLOC_CTX *mem_ctx,
const char *domain_name,
struct GUID *domain_guid,
uint32_t flags,
const char *site_name,
struct netr_DsRGetDCNameInfo **info)
{
NTSTATUS status;
bool expired = false;
status = dsgetdcname_cache_fetch(mem_ctx, domain_name, domain_guid,
flags, site_name, info, &expired);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10,("dsgetdcname_cached: cache fetch failed with: %s\n",
nt_errstr(status)));
return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
}
if (flags & DS_BACKGROUND_ONLY) {
return status;
}
if (expired) {
status = dsgetdcname_cache_refresh(mem_ctx, domain_name,
domain_guid, flags,
site_name, *info);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
}
return status;
}
/****************************************************************
****************************************************************/
static bool check_allowed_required_flags(uint32_t flags)
{
uint32_t return_type = flags & (DS_RETURN_FLAT_NAME|DS_RETURN_DNS_NAME);
uint32_t offered_type = flags & (DS_IS_FLAT_NAME|DS_IS_DNS_NAME);
uint32_t query_type = flags & (DS_BACKGROUND_ONLY|DS_FORCE_REDISCOVERY);
/* FIXME: check for DSGETDC_VALID_FLAGS and check for excluse bits
* (DS_PDC_REQUIRED, DS_KDC_REQUIRED, DS_GC_SERVER_REQUIRED) */
debug_dsdcinfo_flags(10, flags);
if (return_type == (DS_RETURN_FLAT_NAME|DS_RETURN_DNS_NAME)) {
return false;
}
if (offered_type == (DS_IS_DNS_NAME|DS_IS_FLAT_NAME)) {
return false;
}
if (query_type == (DS_BACKGROUND_ONLY|DS_FORCE_REDISCOVERY)) {
return false;
}
#if 0
if ((flags & DS_RETURN_DNS_NAME) && (!(flags & DS_IP_REQUIRED))) {
printf("gd: here5 \n");
return false;
}
#endif
return true;
}
/****************************************************************
****************************************************************/
static NTSTATUS discover_dc_netbios(TALLOC_CTX *mem_ctx,
const char *domain_name,
uint32_t flags,
struct ip_service_name **returned_dclist,
int *returned_count)
{
NTSTATUS status;
enum nbt_name_type name_type = NBT_NAME_LOGON;
struct ip_service *iplist;
int i;
struct ip_service_name *dclist = NULL;
int count;
*returned_dclist = NULL;
*returned_count = 0;
if (lp_disable_netbios()) {
return NT_STATUS_NOT_SUPPORTED;
}
if (flags & DS_PDC_REQUIRED) {
name_type = NBT_NAME_PDC;
}
status = internal_resolve_name(domain_name, name_type, NULL,
&iplist, &count,
"lmhosts wins bcast");
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10,("discover_dc_netbios: failed to find DC\n"));
return status;
}
dclist = TALLOC_ZERO_ARRAY(mem_ctx, struct ip_service_name, count);
if (!dclist) {
return NT_STATUS_NO_MEMORY;
}
for (i=0; iss = iplist[i].ss;
r->port = iplist[i].port;
r->hostname = talloc_strdup(mem_ctx, addr);
if (!r->hostname) {
return NT_STATUS_NO_MEMORY;
}
}
*returned_dclist = dclist;
*returned_count = count;
return NT_STATUS_OK;
}
/****************************************************************
****************************************************************/
static NTSTATUS discover_dc_dns(TALLOC_CTX *mem_ctx,
const char *domain_name,
struct GUID *domain_guid,
uint32_t flags,
const char *site_name,
struct ip_service_name **returned_dclist,
int *return_count)
{
int i, j;
NTSTATUS status;
struct dns_rr_srv *dcs = NULL;
int numdcs = 0;
int numaddrs = 0;
struct ip_service_name *dclist = NULL;
int count = 0;
if (flags & DS_PDC_REQUIRED) {
status = ads_dns_query_pdc(mem_ctx, domain_name,
&dcs, &numdcs);
} else if (flags & DS_GC_SERVER_REQUIRED) {
status = ads_dns_query_gcs(mem_ctx, domain_name, site_name,
&dcs, &numdcs);
} else if (flags & DS_KDC_REQUIRED) {
status = ads_dns_query_kdcs(mem_ctx, domain_name, site_name,
&dcs, &numdcs);
} else if (flags & DS_DIRECTORY_SERVICE_REQUIRED) {
status = ads_dns_query_dcs(mem_ctx, domain_name, site_name,
&dcs, &numdcs);
} else if (domain_guid) {
status = ads_dns_query_dcs_guid(mem_ctx, domain_name,
domain_guid, &dcs, &numdcs);
} else {
status = ads_dns_query_dcs(mem_ctx, domain_name, site_name,
&dcs, &numdcs);
}
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if (numdcs == 0) {
return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
}
for (i=0;iport = dcs[count].port;
r->hostname = dcs[count].hostname;
if (!(flags & DS_IP_REQUIRED)) {
count++;
continue;
}
/* If we don't have an IP list for a name, lookup it up */
if (!dcs[i].ss_s) {
interpret_string_addr(&r->ss, dcs[i].hostname, 0);
i++;
j = 0;
} else {
/* use the IP addresses from the SRV sresponse */
if (j >= dcs[i].num_ips) {
i++;
j = 0;
continue;
}
r->ss = dcs[i].ss_s[j];
j++;
}
/* make sure it is a valid IP. I considered checking the
* negative connection cache, but this is the wrong place for
* it. Maybe only as a hac. After think about it, if all of
* the IP addresses retuend from DNS are dead, what hope does a
* netbios name lookup have? The standard reason for falling
* back to netbios lookups is that our DNS server doesn't know
* anything about the DC's -- jerry */
if (!is_zero_addr(&r->ss)) {
count++;
continue;
}
}
*returned_dclist = dclist;
*return_count = count;
if (count > 0) {
return NT_STATUS_OK;
}
return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
}
/****************************************************************
****************************************************************/
static NTSTATUS make_domain_controller_info(TALLOC_CTX *mem_ctx,
const char *dc_unc,
const char *dc_address,
uint32_t dc_address_type,
const struct GUID *domain_guid,
const char *domain_name,
const char *forest_name,
uint32_t flags,
const char *dc_site_name,
const char *client_site_name,
struct netr_DsRGetDCNameInfo **info_out)
{
struct netr_DsRGetDCNameInfo *info;
info = TALLOC_ZERO_P(mem_ctx, struct netr_DsRGetDCNameInfo);
NT_STATUS_HAVE_NO_MEMORY(info);
if (dc_unc) {
info->dc_unc = talloc_strdup(mem_ctx, dc_unc);
NT_STATUS_HAVE_NO_MEMORY(info->dc_unc);
}
if (dc_address) {
info->dc_address = talloc_strdup(mem_ctx, dc_address);
NT_STATUS_HAVE_NO_MEMORY(info->dc_address);
}
info->dc_address_type = dc_address_type;
if (domain_guid) {
info->domain_guid = *domain_guid;
}
if (domain_name) {
info->domain_name = talloc_strdup(mem_ctx, domain_name);
NT_STATUS_HAVE_NO_MEMORY(info->domain_name);
}
if (forest_name) {
info->forest_name = talloc_strdup(mem_ctx, forest_name);
NT_STATUS_HAVE_NO_MEMORY(info->forest_name);
}
info->dc_flags = flags;
if (dc_site_name) {
info->dc_site_name = talloc_strdup(mem_ctx, dc_site_name);
NT_STATUS_HAVE_NO_MEMORY(info->dc_site_name);
}
if (client_site_name) {
info->client_site_name = talloc_strdup(mem_ctx,
client_site_name);
NT_STATUS_HAVE_NO_MEMORY(info->client_site_name);
}
*info_out = info;
return NT_STATUS_OK;
}
/****************************************************************
****************************************************************/
static uint32_t map_ds_flags_to_nt_version(uint32_t flags)
{
uint32_t nt_version = 0;
if (flags & DS_PDC_REQUIRED) {
nt_version |= NETLOGON_VERSION_PDC;
}
if (flags & DS_GC_SERVER_REQUIRED) {
nt_version |= NETLOGON_VERSION_GC;
}
if (flags & DS_TRY_NEXTCLOSEST_SITE) {
nt_version |= NETLOGON_VERSION_WITH_CLOSEST_SITE;
}
if (flags & DS_IP_REQUIRED) {
nt_version |= NETLOGON_VERSION_IP;
}
return nt_version;
}
/****************************************************************
****************************************************************/
static NTSTATUS process_dc_dns(TALLOC_CTX *mem_ctx,
const char *domain_name,
uint32_t flags,
struct ip_service_name *dclist,
int num_dcs,
struct netr_DsRGetDCNameInfo **info)
{
int i = 0;
bool valid_dc = false;
struct nbt_cldap_netlogon_5 r;
const char *dc_hostname, *dc_domain_name;
const char *dc_address;
uint32_t dc_address_type;
uint32_t dc_flags;
for (i=0; icommand == NTLOGON_RESPONSE_FROM_PDC2) {
dc_flags |= reply->req.reply2.server_type;
dc_forest = reply->req.reply2.forest;
dc_server_site = reply->req.reply2.server_site;
dc_client_site = reply->req.reply2.client_site;
dc_domain_guid = &reply->req.reply2.domain_uuid;
if (flags & DS_RETURN_DNS_NAME) {
dc_domain_name = reply->req.reply2.dns_domain;
dc_hostname = reply->req.reply2.pdc_dns_name;
dc_flags |= DS_DNS_DOMAIN | DS_DNS_CONTROLLER;
} else if (flags & DS_RETURN_FLAT_NAME) {
dc_domain_name = reply->req.reply2.domain;
dc_hostname = reply->req.reply2.pdc_name;
}
}
if (flags & DS_IP_REQUIRED) {
char addr[INET6_ADDRSTRLEN];
print_sockaddr(addr, sizeof(addr), &dclist[i].ss);
dc_address = talloc_asprintf(mem_ctx, "\\\\%s", addr);
dc_address_type = DS_ADDRESS_TYPE_INET;
} else {
dc_address = talloc_asprintf(mem_ctx, "\\\\%s", dc_hostname);
dc_address_type = DS_ADDRESS_TYPE_NETBIOS;
}
if (flags & DS_PDC_REQUIRED) {
dc_flags |= NBT_SERVER_PDC | NBT_SERVER_WRITABLE;
}
if (dc_forest) {
dc_flags |= DS_DNS_FOREST;
}
return make_domain_controller_info(mem_ctx,
dc_hostname,
dc_address,
dc_address_type,
dc_domain_guid,
dc_domain_name,
dc_forest,
dc_flags,
dc_server_site,
dc_client_site,
info);
}
/****************************************************************
****************************************************************/
static NTSTATUS dsgetdcname_rediscover(TALLOC_CTX *mem_ctx,
const char *domain_name,
struct GUID *domain_guid,
uint32_t flags,
const char *site_name,
struct netr_DsRGetDCNameInfo **info)
{
NTSTATUS status = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
struct ip_service_name *dclist = NULL;
int num_dcs;
DEBUG(10,("dsgetdcname_rediscover\n"));
if (flags & DS_IS_FLAT_NAME) {
status = discover_dc_netbios(mem_ctx, domain_name, flags,
&dclist, &num_dcs);
NT_STATUS_NOT_OK_RETURN(status);
return process_dc_netbios(mem_ctx, domain_name, flags,
dclist, num_dcs, info);
}
if (flags & DS_IS_DNS_NAME) {
status = discover_dc_dns(mem_ctx, domain_name, domain_guid,
flags, site_name, &dclist, &num_dcs);
NT_STATUS_NOT_OK_RETURN(status);
return process_dc_dns(mem_ctx, domain_name, flags,
dclist, num_dcs, info);
}
status = discover_dc_dns(mem_ctx, domain_name, domain_guid, flags,
site_name, &dclist, &num_dcs);
if (NT_STATUS_IS_OK(status) && num_dcs != 0) {
status = process_dc_dns(mem_ctx, domain_name, flags, dclist,
num_dcs, info);
if (NT_STATUS_IS_OK(status)) {
return status;
}
}
status = discover_dc_netbios(mem_ctx, domain_name, flags, &dclist,
&num_dcs);
NT_STATUS_NOT_OK_RETURN(status);
return process_dc_netbios(mem_ctx, domain_name, flags, dclist,
num_dcs, info);
}
/********************************************************************
dsgetdcname.
This will be the only public function here.
********************************************************************/
NTSTATUS dsgetdcname(TALLOC_CTX *mem_ctx,
const char *domain_name,
struct GUID *domain_guid,
const char *site_name,
uint32_t flags,
struct netr_DsRGetDCNameInfo **info)
{
NTSTATUS status = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
struct netr_DsRGetDCNameInfo *myinfo = NULL;
DEBUG(10,("dsgetdcname: domain_name: %s, "
"domain_guid: %s, site_name: %s, flags: 0x%08x\n",
domain_name,
domain_guid ? GUID_string(mem_ctx, domain_guid) : "(null)",
site_name, flags));
*info = NULL;
if (!check_allowed_required_flags(flags)) {
DEBUG(0,("invalid flags specified\n"));
return NT_STATUS_INVALID_PARAMETER;
}
if (flags & DS_FORCE_REDISCOVERY) {
goto rediscover;
}
status = dsgetdcname_cached(mem_ctx, domain_name, domain_guid,
flags, site_name, &myinfo);
if (NT_STATUS_IS_OK(status)) {
*info = myinfo;
return status;
}
if (flags & DS_BACKGROUND_ONLY) {
return status;
}
rediscover:
status = dsgetdcname_rediscover(mem_ctx, domain_name,
domain_guid, flags, site_name,
&myinfo);
if (NT_STATUS_IS_OK(status)) {
dsgetdcname_cache_store(mem_ctx, domain_name, myinfo);
*info = myinfo;
}
return status;
}
/****************************************************************
****************************************************************/
bool pull_mailslot_cldap_reply(TALLOC_CTX *mem_ctx,
const DATA_BLOB *blob,
union nbt_cldap_netlogon *r,
uint32_t *nt_version)
{
enum ndr_err_code ndr_err;
uint32_t nt_version_query = ((*nt_version) & 0x000000ff);
uint16_t command = 0;
ndr_err = ndr_pull_struct_blob(blob, mem_ctx, &command,
(ndr_pull_flags_fn_t)ndr_pull_uint16);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
return false;
}
switch (command) {
case 0x13: /* 19 */
case 0x15: /* 21 */
case 0x17: /* 23 */
break;
default:
DEBUG(1,("got unexpected command: %d (0x%08x)\n",
command, command));
return false;
}
ndr_err = ndr_pull_union_blob_all(blob, mem_ctx, r, nt_version_query,
(ndr_pull_flags_fn_t)ndr_pull_nbt_cldap_netlogon);
if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
goto done;
}
/* when the caller requested just those nt_version bits that the server
* was able to reply to, we are fine and all done. otherwise we need to
* assume downgraded replies which are painfully parsed here - gd */
if (nt_version_query & NETLOGON_VERSION_WITH_CLOSEST_SITE) {
nt_version_query &= ~NETLOGON_VERSION_WITH_CLOSEST_SITE;
}
ndr_err = ndr_pull_union_blob_all(blob, mem_ctx, r, nt_version_query,
(ndr_pull_flags_fn_t)ndr_pull_nbt_cldap_netlogon);
if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
goto done;
}
if (nt_version_query & NETLOGON_VERSION_5EX_WITH_IP) {
nt_version_query &= ~NETLOGON_VERSION_5EX_WITH_IP;
}
ndr_err = ndr_pull_union_blob_all(blob, mem_ctx, r, nt_version_query,
(ndr_pull_flags_fn_t)ndr_pull_nbt_cldap_netlogon);
if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
goto done;
}
if (nt_version_query & NETLOGON_VERSION_5EX) {
nt_version_query &= ~NETLOGON_VERSION_5EX;
}
ndr_err = ndr_pull_union_blob_all(blob, mem_ctx, r, nt_version_query,
(ndr_pull_flags_fn_t)ndr_pull_nbt_cldap_netlogon);
if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
goto done;
}
if (nt_version_query & NETLOGON_VERSION_5) {
nt_version_query &= ~NETLOGON_VERSION_5;
}
ndr_err = ndr_pull_union_blob_all(blob, mem_ctx, r, nt_version_query,
(ndr_pull_flags_fn_t)ndr_pull_nbt_cldap_netlogon);
if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
goto done;
}
return false;
done:
if (DEBUGLEVEL >= 10) {
NDR_PRINT_UNION_DEBUG(nbt_cldap_netlogon, nt_version_query, r);
}
*nt_version = nt_version_query;
return true;
}