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/*
Unix SMB/CIFS implementation.
Core SMB2 server
Copyright (C) Stefan Metzmacher 2009
Copyright (C) Jeremy Allison 2021
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 "smbd/smbd.h"
#include "smbd/globals.h"
#include "../libcli/smb/smb_common.h"
#include "../lib/util/tevent_ntstatus.h"
#include "include/ntioctl.h"
#include "smb2_ioctl_private.h"
#include "librpc/gen_ndr/ioctl.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_SMB2
struct async_sleep_state {
struct smbd_server_connection *sconn;
files_struct *fsp;
};
static void smbd_fsctl_torture_async_sleep_done(struct tevent_req *subreq);
static struct tevent_req *smbd_fsctl_torture_async_sleep_send(
TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
files_struct *fsp,
uint8_t msecs)
{
struct async_sleep_state *state = NULL;
struct tevent_req *subreq = NULL;
bool ok;
subreq = tevent_req_create(mem_ctx,
&state,
struct async_sleep_state);
if (!subreq) {
return NULL;
}
/*
* Store the conn separately, as the test is to
* see if fsp is still a valid pointer, so we can't
* do anything other than test it for entry in the
* open files on this server connection.
*/
state->sconn = fsp->conn->sconn;
state->fsp = fsp;
/*
* Just wait for the specified number of micro seconds,
* to allow the client time to close fsp.
*/
ok = tevent_req_set_endtime(subreq,
ev,
timeval_current_ofs(0, msecs));
if (!ok) {
tevent_req_nterror(subreq, NT_STATUS_NO_MEMORY);
return tevent_req_post(subreq, ev);
}
return subreq;
}
static files_struct *find_my_fsp(struct files_struct *fsp,
void *private_data)
{
struct files_struct *myfsp = (struct files_struct *)private_data;
if (fsp == myfsp) {
return myfsp;
}
return NULL;
}
static bool smbd_fsctl_torture_async_sleep_recv(struct tevent_req *subreq)
{
tevent_req_received(subreq);
return true;
}
static void smbd_fsctl_torture_async_sleep_done(struct tevent_req *subreq)
{
struct files_struct *found_fsp;
struct tevent_req *req = tevent_req_callback_data(
subreq,
struct tevent_req);
struct async_sleep_state *state = tevent_req_data(
subreq,
struct async_sleep_state);
/* Does state->fsp still exist on state->sconn ? */
found_fsp = files_forall(state->sconn,
find_my_fsp,
state->fsp);
smbd_fsctl_torture_async_sleep_recv(subreq);
TALLOC_FREE(subreq);
if (found_fsp == NULL) {
/*
* We didn't find it - return an error to the
* smb2 ioctl request. Use NT_STATUS_FILE_CLOSED so
* the client can tell the difference between
* a bad fsp handle and
*
* BUG: https://bugzilla.samba.org/show_bug.cgi?id=14769
*
* This request should block file closure until it
* has completed.
*/
tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
return;
}
tevent_req_done(req);
}
struct tevent_req *smb2_ioctl_smbtorture(uint32_t ctl_code,
struct tevent_context *ev,
struct tevent_req *req,
struct smbd_smb2_ioctl_state *state)
{
NTSTATUS status;
bool ok;
ok = lp_parm_bool(-1, "smbd", "FSCTL_SMBTORTURE", false);
if (!ok) {
goto not_supported;
}
switch (ctl_code) {
case FSCTL_SMBTORTURE_FORCE_UNACKED_TIMEOUT:
if (state->in_input.length != 0) {
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
return tevent_req_post(req, ev);
}
state->smb2req->xconn->ack.force_unacked_timeout = true;
tevent_req_done(req);
return tevent_req_post(req, ev);
case FSCTL_SMBTORTURE_IOCTL_RESPONSE_BODY_PADDING8:
if (state->in_input.length != 0) {
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
return tevent_req_post(req, ev);
}
if (state->in_max_output > 0) {
uint32_t size = state->in_max_output;
state->out_output = data_blob_talloc(state, NULL, size);
if (tevent_req_nomem(state->out_output.data, req)) {
return tevent_req_post(req, ev);
}
memset(state->out_output.data, 8, size);
}
state->body_padding = 8;
tevent_req_done(req);
return tevent_req_post(req, ev);
case FSCTL_SMBTORTURE_GLOBAL_READ_RESPONSE_BODY_PADDING8:
if (state->in_input.length != 0) {
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
return tevent_req_post(req, ev);
}
state->smb2req->xconn->smb2.smbtorture.read_body_padding = 8;
tevent_req_done(req);
return tevent_req_post(req, ev);
case FSCTL_SMBTORTURE_FSP_ASYNC_SLEEP: {
struct tevent_req *subreq = NULL;
/* Data is 1 byte of CVAL stored seconds to delay for. */
if (state->in_input.length != 1) {
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
return tevent_req_post(req, ev);
}
if (state->fsp == NULL) {
tevent_req_nterror(req, NT_STATUS_INVALID_HANDLE);
return tevent_req_post(req, ev);
}
subreq = smbd_fsctl_torture_async_sleep_send(
req,
ev,
state->fsp,
CVAL(state->in_input.data,0));
if (subreq == NULL) {
tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq,
smbd_fsctl_torture_async_sleep_done,
req);
return req;
}
default:
goto not_supported;
}
not_supported:
if (IS_IPC(state->smbreq->conn)) {
status = NT_STATUS_FS_DRIVER_REQUIRED;
} else {
status = NT_STATUS_INVALID_DEVICE_REQUEST;
}
tevent_req_nterror(req, status);
return tevent_req_post(req, ev);
}
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