mirror of
https://github.com/samba-team/samba.git
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88016bac86
This reverts commit 894e5001c7
.
See the discussion in
https://lists.samba.org/archive/samba-technical/2018-December/131731.html
for the reasoning behind this revert.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
189 lines
5.1 KiB
C
189 lines
5.1 KiB
C
/*
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Unix SMB/CIFS implementation.
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Core SMB2 server
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Copyright (C) Stefan Metzmacher 2009
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "smbd/smbd.h"
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#include "smbd/globals.h"
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#include "../libcli/smb/smb_common.h"
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#include "../lib/util/tevent_ntstatus.h"
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#include "rpc_server/srv_pipe_hnd.h"
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#include "include/ntioctl.h"
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#include "smb2_ioctl_private.h"
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#undef DBGC_CLASS
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#define DBGC_CLASS DBGC_SMB2
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static void smbd_smb2_ioctl_pipe_write_done(struct tevent_req *subreq);
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static void smbd_smb2_ioctl_pipe_read_done(struct tevent_req *subreq);
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struct tevent_req *smb2_ioctl_named_pipe(uint32_t ctl_code,
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struct tevent_context *ev,
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struct tevent_req *req,
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struct smbd_smb2_ioctl_state *state)
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{
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NTSTATUS status;
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uint8_t *out_data = NULL;
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uint32_t out_data_len = 0;
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if (ctl_code == FSCTL_PIPE_TRANSCEIVE) {
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struct tevent_req *subreq;
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if (!IS_IPC(state->smbreq->conn)) {
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tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
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return tevent_req_post(req, ev);
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}
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if (state->fsp == NULL) {
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tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
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return tevent_req_post(req, ev);
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}
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if (!fsp_is_np(state->fsp)) {
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tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
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return tevent_req_post(req, ev);
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}
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DEBUG(10,("smbd_smb2_ioctl_send: np_write_send of size %u\n",
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(unsigned int)state->in_input.length ));
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subreq = np_write_send(state, ev,
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state->fsp->fake_file_handle,
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state->in_input.data,
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state->in_input.length);
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if (tevent_req_nomem(subreq, req)) {
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return tevent_req_post(req, ev);
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}
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tevent_req_set_callback(subreq,
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smbd_smb2_ioctl_pipe_write_done,
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req);
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return req;
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}
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if (state->fsp == NULL) {
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status = NT_STATUS_NOT_SUPPORTED;
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} else {
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status = SMB_VFS_FSCTL(state->fsp,
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state,
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ctl_code,
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state->smbreq->flags2,
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state->in_input.data,
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state->in_input.length,
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&out_data,
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state->in_max_output,
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&out_data_len);
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state->out_output = data_blob_const(out_data, out_data_len);
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if (NT_STATUS_IS_OK(status)) {
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tevent_req_done(req);
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return tevent_req_post(req, ev);
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}
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}
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if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED)) {
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if (IS_IPC(state->smbreq->conn)) {
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status = NT_STATUS_FS_DRIVER_REQUIRED;
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} else {
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status = NT_STATUS_INVALID_DEVICE_REQUEST;
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}
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}
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tevent_req_nterror(req, status);
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return tevent_req_post(req, ev);
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}
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static void smbd_smb2_ioctl_pipe_write_done(struct tevent_req *subreq)
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{
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struct tevent_req *req = tevent_req_callback_data(subreq,
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struct tevent_req);
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struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
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struct smbd_smb2_ioctl_state);
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NTSTATUS status;
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ssize_t nwritten = -1;
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status = np_write_recv(subreq, &nwritten);
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DEBUG(10,("smbd_smb2_ioctl_pipe_write_done: received %ld\n",
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(long int)nwritten ));
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TALLOC_FREE(subreq);
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if (!NT_STATUS_IS_OK(status)) {
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tevent_req_nterror(req, status);
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return;
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}
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if (nwritten != state->in_input.length) {
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tevent_req_nterror(req, NT_STATUS_PIPE_NOT_AVAILABLE);
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return;
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}
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state->out_output = data_blob_talloc(state, NULL, state->in_max_output);
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if (state->in_max_output > 0 &&
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tevent_req_nomem(state->out_output.data, req)) {
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return;
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}
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DEBUG(10,("smbd_smb2_ioctl_pipe_write_done: issuing np_read_send "
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"of size %u\n",
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(unsigned int)state->out_output.length ));
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subreq = np_read_send(state->smbreq->conn,
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state->smb2req->sconn->ev_ctx,
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state->fsp->fake_file_handle,
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state->out_output.data,
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state->out_output.length);
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if (tevent_req_nomem(subreq, req)) {
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return;
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}
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tevent_req_set_callback(subreq, smbd_smb2_ioctl_pipe_read_done, req);
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}
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static void smbd_smb2_ioctl_pipe_read_done(struct tevent_req *subreq)
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{
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struct tevent_req *req = tevent_req_callback_data(subreq,
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struct tevent_req);
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struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
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struct smbd_smb2_ioctl_state);
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NTSTATUS status;
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ssize_t nread = -1;
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bool is_data_outstanding = false;
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status = np_read_recv(subreq, &nread, &is_data_outstanding);
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DEBUG(10,("smbd_smb2_ioctl_pipe_read_done: np_read_recv nread = %d "
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"is_data_outstanding = %d, status = %s\n",
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(int)nread,
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(int)is_data_outstanding,
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nt_errstr(status) ));
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TALLOC_FREE(subreq);
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if (!NT_STATUS_IS_OK(status)) {
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tevent_req_nterror(req, status);
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return;
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}
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state->out_output.length = nread;
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if (is_data_outstanding) {
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tevent_req_nterror(req, STATUS_BUFFER_OVERFLOW);
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return;
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}
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tevent_req_done(req);
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}
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