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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 "../lib/ccan/build_assert/build_assert.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_validate_neg_info(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct smbXsrv_connection *conn,
DATA_BLOB *in_input,
uint32_t in_max_output,
DATA_BLOB *out_output,
bool *disconnect)
{
uint32_t in_capabilities;
DATA_BLOB in_guid_blob;
struct GUID in_guid;
uint16_t in_security_mode;
uint16_t in_num_dialects;
uint16_t i;
DATA_BLOB out_guid_blob;
NTSTATUS status;
if (in_input->length < 0x18) {
return NT_STATUS_INVALID_PARAMETER;
}
in_capabilities = IVAL(in_input->data, 0x00);
in_guid_blob = data_blob_const(in_input->data + 0x04, 16);
in_security_mode = SVAL(in_input->data, 0x14);
in_num_dialects = SVAL(in_input->data, 0x16);
if (in_input->length < (0x18 + in_num_dialects*2)) {
return NT_STATUS_INVALID_PARAMETER;
}
if (in_max_output < 0x18) {
return NT_STATUS_BUFFER_TOO_SMALL;
}
status = GUID_from_ndr_blob(&in_guid_blob, &in_guid);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if (in_num_dialects != conn->smb2.client.num_dialects) {
*disconnect = true;
return NT_STATUS_ACCESS_DENIED;
}
for (i=0; i < in_num_dialects; i++) {
uint16_t v = SVAL(in_input->data, 0x18 + i*2);
if (conn->smb2.client.dialects[i] != v) {
*disconnect = true;
return NT_STATUS_ACCESS_DENIED;
}
}
if (GUID_compare(&in_guid, &conn->smb2.client.guid) != 0) {
*disconnect = true;
return NT_STATUS_ACCESS_DENIED;
}
if (in_security_mode != conn->smb2.client.security_mode) {
*disconnect = true;
return NT_STATUS_ACCESS_DENIED;
}
if (in_capabilities != conn->smb2.client.capabilities) {
*disconnect = true;
return NT_STATUS_ACCESS_DENIED;
}
status = GUID_to_ndr_blob(&conn->smb2.server.guid, mem_ctx,
&out_guid_blob);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
*out_output = data_blob_talloc(mem_ctx, NULL, 0x18);
if (out_output->data == NULL) {
return NT_STATUS_NO_MEMORY;
}
SIVAL(out_output->data, 0x00, conn->smb2.server.capabilities);
memcpy(out_output->data+0x04, out_guid_blob.data, 16);
SIVAL(out_output->data, 0x14, conn->smb2.server.security_mode);
SIVAL(out_output->data, 0x16, conn->smb2.server.dialect);
return NT_STATUS_OK;
}
static NTSTATUS fsctl_srv_req_resume_key(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct files_struct *fsp,
uint32_t in_max_output,
DATA_BLOB *out_output)
{
struct req_resume_key_rsp rkey_rsp;
enum ndr_err_code ndr_ret;
DATA_BLOB output;
if (fsp == NULL) {
return NT_STATUS_FILE_CLOSED;
}
ZERO_STRUCT(rkey_rsp);
/* use the file id as a copychunk resume key */
BUILD_ASSERT(ARRAY_SIZE(rkey_rsp.resume_key) == sizeof(fsp->file_id));
memcpy(rkey_rsp.resume_key, &fsp->file_id, sizeof(fsp->file_id));
ndr_ret = ndr_push_struct_blob(&output, mem_ctx, &rkey_rsp,
(ndr_push_flags_fn_t)ndr_push_req_resume_key_rsp);
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 resume key rsp %ld\n",
in_max_output, (long int)output.length));
return NT_STATUS_INVALID_PARAMETER;
}
*out_output = output;
return NT_STATUS_OK;
}
NTSTATUS smb2_ioctl_network_fs(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_VALIDATE_NEGOTIATE_INFO:
status = fsctl_validate_neg_info(state, ev,
state->smbreq->sconn->conn,
&state->in_input,
state->in_max_output,
&state->out_output,
&state->disconnect);
if (!tevent_req_nterror(req, status)) {
tevent_req_done(req);
}
return tevent_req_post(req, ev);
break;
case FSCTL_SRV_REQUEST_RESUME_KEY:
status = fsctl_srv_req_resume_key(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;
default: {
uint8_t *out_data = NULL;
uint32_t out_data_len = 0;
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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