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samba-mirror/source3/winbindd/wb_dsgetdcname.c
Pavel Filipenský 08e80f8763 s3:winbind: Improve logging in wb_dsgetdcname.c
Signed-off-by: Pavel Filipenský <pfilipen@redhat.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
2022-07-15 14:25:38 +00:00

247 lines
6.4 KiB
C

/*
Unix SMB/CIFS implementation.
async dsgetdcname
Copyright (C) Volker Lendecke 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/>.
*/
#include "includes.h"
#include "winbindd.h"
#include "librpc/gen_ndr/ndr_winbind_c.h"
#include "librpc/gen_ndr/ndr_netlogon.h"
#include "lib/gencache.h"
struct wb_dsgetdcname_state {
struct netr_DsRGetDCNameInfo *dcinfo;
};
static void wb_dsgetdcname_done(struct tevent_req *subreq);
struct tevent_req *wb_dsgetdcname_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
const char *domain_name,
const struct GUID *domain_guid,
const char *site_name,
uint32_t flags)
{
struct tevent_req *req, *subreq;
struct wb_dsgetdcname_state *state;
struct dcerpc_binding_handle *child_binding_handle = NULL;
struct GUID guid;
struct GUID *guid_ptr = NULL;
req = tevent_req_create(mem_ctx, &state, struct wb_dsgetdcname_state);
if (req == NULL) {
return NULL;
}
D_INFO("WB command dsgetdcname start.\n"
"Search domain name %s and site name %s.\n",
domain_name,
site_name);
if (strequal(domain_name, "BUILTIN")) {
/*
* This makes no sense
*/
tevent_req_nterror(req, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND);
return tevent_req_post(req, ev);
}
if (strequal(domain_name, get_global_sam_name())) {
int role = lp_server_role();
if ( role != ROLE_ACTIVE_DIRECTORY_DC ) {
/*
* Two options here: Give back our own address, or say there's
* nobody around. Right now opting for the latter, one measure
* to prevent the loopback connects. This might change if
* needed.
*/
tevent_req_nterror(req, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND);
return tevent_req_post(req, ev);
}
}
if (IS_DC) {
/*
* We have to figure out the DC ourselves
*/
child_binding_handle = locator_child_handle();
} else {
struct winbindd_domain *domain = find_our_domain();
child_binding_handle = dom_child_handle(domain);
}
if (domain_guid != NULL) {
/* work around a const issue in rpccli_ autogenerated code */
guid = *domain_guid;
guid_ptr = &guid;
}
subreq = dcerpc_wbint_DsGetDcName_send(
state, ev, child_binding_handle, domain_name, guid_ptr, site_name,
flags, &state->dcinfo);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, wb_dsgetdcname_done, req);
return req;
}
static void wb_dsgetdcname_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct wb_dsgetdcname_state *state = tevent_req_data(
req, struct wb_dsgetdcname_state);
NTSTATUS status, result;
status = dcerpc_wbint_DsGetDcName_recv(subreq, state, &result);
TALLOC_FREE(subreq);
if (any_nt_status_not_ok(status, result, &status)) {
tevent_req_nterror(req, status);
return;
}
tevent_req_done(req);
}
NTSTATUS wb_dsgetdcname_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
struct netr_DsRGetDCNameInfo **pdcinfo)
{
struct wb_dsgetdcname_state *state = tevent_req_data(
req, struct wb_dsgetdcname_state);
NTSTATUS status;
D_INFO("WB command dsgetdcname end.\n");
if (tevent_req_is_nterror(req, &status)) {
D_WARNING("Failed with %s.\n", nt_errstr(status));
return status;
}
*pdcinfo = talloc_move(mem_ctx, &state->dcinfo);
return NT_STATUS_OK;
}
NTSTATUS wb_dsgetdcname_gencache_set(const char *domname,
struct netr_DsRGetDCNameInfo *dcinfo)
{
DATA_BLOB blob;
enum ndr_err_code ndr_err;
char *key;
bool ok;
key = talloc_asprintf_strupper_m(talloc_tos(), "DCINFO/%s", domname);
if (key == NULL) {
return NT_STATUS_NO_MEMORY;
}
if (DEBUGLEVEL >= 10) {
NDR_PRINT_DEBUG(netr_DsRGetDCNameInfo, dcinfo);
}
ndr_err = ndr_push_struct_blob(
&blob, key, dcinfo,
(ndr_push_flags_fn_t)ndr_push_netr_DsRGetDCNameInfo);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
DBG_WARNING("ndr_push_struct_blob failed: %s\n",
ndr_errstr(ndr_err));
TALLOC_FREE(key);
return status;
}
ok = gencache_set_data_blob(key, blob, time(NULL)+3600);
if (!ok) {
DBG_WARNING("gencache_set_data_blob for key %s failed\n", key);
TALLOC_FREE(key);
return NT_STATUS_UNSUCCESSFUL;
}
TALLOC_FREE(key);
return NT_STATUS_OK;
}
struct dcinfo_parser_state {
NTSTATUS status;
TALLOC_CTX *mem_ctx;
struct netr_DsRGetDCNameInfo *dcinfo;
};
static void dcinfo_parser(const struct gencache_timeout *timeout,
DATA_BLOB blob,
void *private_data)
{
struct dcinfo_parser_state *state = private_data;
enum ndr_err_code ndr_err;
if (gencache_timeout_expired(timeout)) {
return;
}
state->dcinfo = talloc(state->mem_ctx, struct netr_DsRGetDCNameInfo);
if (state->dcinfo == NULL) {
state->status = NT_STATUS_NO_MEMORY;
return;
}
ndr_err = ndr_pull_struct_blob_all(
&blob, state->dcinfo, state->dcinfo,
(ndr_pull_flags_fn_t)ndr_pull_netr_DsRGetDCNameInfo);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
DBG_ERR("ndr_pull_struct_blob failed\n");
state->status = ndr_map_error2ntstatus(ndr_err);
TALLOC_FREE(state->dcinfo);
return;
}
state->status = NT_STATUS_OK;
}
NTSTATUS wb_dsgetdcname_gencache_get(TALLOC_CTX *mem_ctx,
const char *domname,
struct netr_DsRGetDCNameInfo **dcinfo)
{
struct dcinfo_parser_state state;
char *key;
bool ok;
key = talloc_asprintf_strupper_m(mem_ctx, "DCINFO/%s", domname);
if (key == NULL) {
return NT_STATUS_NO_MEMORY;
}
state = (struct dcinfo_parser_state) {
.status = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND,
.mem_ctx = mem_ctx,
};
ok = gencache_parse(key, dcinfo_parser, &state);
TALLOC_FREE(key);
if (!ok) {
return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
}
if (!NT_STATUS_IS_OK(state.status)) {
return state.status;
}
if (DEBUGLEVEL >= 10) {
NDR_PRINT_DEBUG(netr_DsRGetDCNameInfo, state.dcinfo);
}
*dcinfo = state.dcinfo;
return NT_STATUS_OK;
}