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/*
Unix SMB/CIFS implementation.
Core SMB2 server
Copyright (C) Stefan Metzmacher 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 "smbd/smbd.h"
#include "smbd/globals.h"
#include "../libcli/smb/smb_common.h"
#include "../lib/util/tevent_ntstatus.h"
#include "rpc_server/srv_pipe_hnd.h"
#include "include/ntioctl.h"
#include "smb2_ioctl_private.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_SMB2
static void smbd_smb2_ioctl_pipe_write_done(struct tevent_req *subreq);
static void smbd_smb2_ioctl_pipe_read_done(struct tevent_req *subreq);
struct tevent_req *smb2_ioctl_named_pipe(uint32_t ctl_code,
struct tevent_context *ev,
struct tevent_req *req,
struct smbd_smb2_ioctl_state *state)
{
NTSTATUS status;
uint8_t *out_data = NULL;
uint32_t out_data_len = 0;
if (ctl_code == FSCTL_PIPE_TRANSCEIVE) {
struct tevent_req *subreq;
if (!IS_IPC(state->smbreq->conn)) {
tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
return tevent_req_post(req, ev);
}
if (state->fsp == NULL) {
tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
return tevent_req_post(req, ev);
}
if (!fsp_is_np(state->fsp)) {
tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
return tevent_req_post(req, ev);
}
DEBUG(10,("smbd_smb2_ioctl_send: np_write_send of size %u\n",
(unsigned int)state->in_input.length ));
subreq = np_write_send(state, ev,
state->fsp->fake_file_handle,
state->in_input.data,
state->in_input.length);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq,
smbd_smb2_ioctl_pipe_write_done,
req);
return req;
}
if (state->fsp == NULL) {
status = NT_STATUS_NOT_SUPPORTED;
} else {
status = SMB_VFS_FSCTL(state->fsp,
state,
ctl_code,
state->smbreq->flags2,
state->in_input.data,
state->in_input.length,
&out_data,
state->in_max_output,
&out_data_len);
state->out_output = data_blob_const(out_data, out_data_len);
if (NT_STATUS_IS_OK(status)) {
tevent_req_done(req);
return tevent_req_post(req, ev);
}
}
if (NT_STATUS_EQUAL(status, NT_STATUS_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);
}
static void smbd_smb2_ioctl_pipe_write_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(subreq,
struct tevent_req);
struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
struct smbd_smb2_ioctl_state);
NTSTATUS status;
ssize_t nwritten = -1;
status = np_write_recv(subreq, &nwritten);
DEBUG(10,("smbd_smb2_ioctl_pipe_write_done: received %ld\n",
(long int)nwritten ));
TALLOC_FREE(subreq);
if (!NT_STATUS_IS_OK(status)) {
tevent_req_nterror(req, status);
return;
}
if (nwritten != state->in_input.length) {
tevent_req_nterror(req, NT_STATUS_PIPE_NOT_AVAILABLE);
return;
}
state->out_output = data_blob_talloc(state, NULL, state->in_max_output);
if (state->in_max_output > 0 &&
tevent_req_nomem(state->out_output.data, req)) {
return;
}
DEBUG(10,("smbd_smb2_ioctl_pipe_write_done: issuing np_read_send "
"of size %u\n",
(unsigned int)state->out_output.length ));
subreq = np_read_send(state->smbreq->conn,
state->smb2req->sconn->ev_ctx,
state->fsp->fake_file_handle,
state->out_output.data,
state->out_output.length);
if (tevent_req_nomem(subreq, req)) {
return;
}
tevent_req_set_callback(subreq, smbd_smb2_ioctl_pipe_read_done, req);
}
static void smbd_smb2_ioctl_pipe_read_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(subreq,
struct tevent_req);
struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
struct smbd_smb2_ioctl_state);
NTSTATUS status;
ssize_t nread = -1;
bool is_data_outstanding = false;
status = np_read_recv(subreq, &nread, &is_data_outstanding);
DEBUG(10,("smbd_smb2_ioctl_pipe_read_done: np_read_recv nread = %d "
"is_data_outstanding = %d, status = %s\n",
(int)nread,
(int)is_data_outstanding,
nt_errstr(status) ));
TALLOC_FREE(subreq);
if (!NT_STATUS_IS_OK(status)) {
tevent_req_nterror(req, status);
return;
}
state->out_output.length = nread;
if (is_data_outstanding) {
tevent_req_nterror(req, STATUS_BUFFER_OVERFLOW);
return;
}
tevent_req_done(req);
}
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