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/*
Unix SMB/CIFS implementation.
Core SMB2 server
Copyright (C) Stefan Metzmacher 2009
Copyright (C) David Disseldorp 2013
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 "../libcli/security/security.h"
#include "../lib/util/tevent_ntstatus.h"
#include "rpc_server/srv_pipe_hnd.h"
#include "include/ntioctl.h"
#include "../librpc/ndr/libndr.h"
#include "librpc/gen_ndr/ndr_ioctl.h"
#include "smb2_ioctl_private.h"
static NTSTATUS fsctl_get_cmprn(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct files_struct *fsp,
size_t in_max_output,
DATA_BLOB *out_output)
{
struct compression_state cmpr_state;
enum ndr_err_code ndr_ret;
DATA_BLOB output;
NTSTATUS status;
if (fsp == NULL) {
return NT_STATUS_FILE_CLOSED;
}
/* Windows doesn't check for SEC_FILE_READ_ATTRIBUTE permission here */
if ((fsp->conn->fs_capabilities & FILE_FILE_COMPRESSION) == 0) {
DEBUG(4, ("FS does not advertise compression support\n"));
return NT_STATUS_NOT_SUPPORTED;
}
ZERO_STRUCT(cmpr_state);
status = SMB_VFS_GET_COMPRESSION(fsp->conn,
mem_ctx,
fsp,
NULL,
&cmpr_state.format);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
ndr_ret = ndr_push_struct_blob(&output, mem_ctx,
&cmpr_state,
(ndr_push_flags_fn_t)ndr_push_compression_state);
if (ndr_ret != NDR_ERR_SUCCESS) {
return NT_STATUS_INTERNAL_ERROR;
}
if (in_max_output < output.length) {
DEBUG(1, ("max output %u too small for compression state %ld\n",
(unsigned int)in_max_output, (long int)output.length));
return NT_STATUS_INVALID_USER_BUFFER;
}
*out_output = output;
return NT_STATUS_OK;
}
static NTSTATUS fsctl_set_cmprn(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct files_struct *fsp,
DATA_BLOB *in_input)
{
struct compression_state cmpr_state;
enum ndr_err_code ndr_ret;
NTSTATUS status;
if (fsp == NULL) {
return NT_STATUS_FILE_CLOSED;
}
/* WRITE_DATA permission is required, WRITE_ATTRIBUTES is not */
status = check_access(fsp->conn, fsp, NULL,
FILE_WRITE_DATA);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if ((fsp->conn->fs_capabilities & FILE_FILE_COMPRESSION) == 0) {
DEBUG(4, ("FS does not advertise compression support\n"));
return NT_STATUS_NOT_SUPPORTED;
}
ndr_ret = ndr_pull_struct_blob(in_input, mem_ctx, &cmpr_state,
(ndr_pull_flags_fn_t)ndr_pull_compression_state);
if (ndr_ret != NDR_ERR_SUCCESS) {
DEBUG(0, ("failed to unmarshall set compression req\n"));
return NT_STATUS_INVALID_PARAMETER;
}
status = SMB_VFS_SET_COMPRESSION(fsp->conn,
mem_ctx,
fsp,
cmpr_state.format);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
return NT_STATUS_OK;
}
struct tevent_req *smb2_ioctl_filesys(uint32_t ctl_code,
struct tevent_context *ev,
struct tevent_req *req,
struct smbd_smb2_ioctl_state *state)
{
NTSTATUS status;
switch (ctl_code) {
case FSCTL_GET_COMPRESSION:
status = fsctl_get_cmprn(state, ev, state->fsp,
state->in_max_output,
&state->out_output);
if (!tevent_req_nterror(req, status)) {
tevent_req_done(req);
}
return tevent_req_post(req, ev);
break;
case FSCTL_SET_COMPRESSION:
status = fsctl_set_cmprn(state, ev, state->fsp,
&state->in_input);
if (!tevent_req_nterror(req, status)) {
tevent_req_done(req);
}
return tevent_req_post(req, ev);
break;
default: {
uint8_t *out_data = NULL;
uint32_t out_data_len = 0;
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);
break;
}
}
tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
return tevent_req_post(req, ev);
}
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