/*

   Unix SMB/CIFS implementation.

   client file operations

   Copyright (C) Andrew Tridgell 2003

   Copyright (C) James J Myers 2003 <myersjj@samba.org>

   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 "libcli/raw/libcliraw.h"

#include "libcli/raw/raw_proto.h"

#define SETUP_REQUEST(cmd, wct, buflen) do { \

  req = smbcli_request_setup(tree, cmd, wct, buflen); \

  if (!req) return NULL; \

} while (0)

/*

   send a raw smb ioctl - async send

*/

static struct smbcli_request *smb_raw_smbioctl_send(struct smbcli_tree *tree,

             union smb_ioctl *parms)

{

  struct smbcli_request *req;

  SETUP_REQUEST(SMBioctl, 3, 0);

  SSVAL(req->out.vwv, VWV(0), parms->ioctl.in.file.fnum);

  SIVAL(req->out.vwv, VWV(1), parms->ioctl.in.request);

  if (!smbcli_request_send(req)) {

    smbcli_request_destroy(req);

    return NULL;

  }

  return req;

}

/*

   send a raw smb ioctl - async recv

*/

static NTSTATUS smb_raw_smbioctl_recv(struct smbcli_request *req,

              TALLOC_CTX *mem_ctx,

              union smb_ioctl *parms)

{

  if (!smbcli_request_receive(req) ||

      smbcli_request_is_error(req)) {

    return smbcli_request_destroy(req);

  }

  parms->ioctl.out.blob = smbcli_req_pull_blob(&req->in.bufinfo, mem_ctx, req->in.data, -1);

  return smbcli_request_destroy(req);

}

/****************************************************************************

NT ioctl (async send)

****************************************************************************/

static struct smbcli_request *smb_raw_ntioctl_send(struct smbcli_tree *tree,

            union smb_ioctl *parms)

{

  struct smb_nttrans nt;

  uint8_t setup[8];

  nt.in.max_setup = 4;

  nt.in.max_param = 0;

  nt.in.max_data = parms->ntioctl.in.max_data;

  nt.in.setup_count = 4;

  nt.in.setup = setup;

  SIVAL(setup, 0, parms->ntioctl.in.function);

  SSVAL(setup, 4, parms->ntioctl.in.file.fnum);

  SCVAL(setup, 6, parms->ntioctl.in.fsctl);

  SCVAL(setup, 7, parms->ntioctl.in.filter);

  nt.in.function = NT_TRANSACT_IOCTL;

  nt.in.params = data_blob(NULL, 0);

  nt.in.data = parms->ntioctl.in.blob;

  return smb_raw_nttrans_send(tree, &nt);

}

/****************************************************************************

NT ioctl (async recv)

****************************************************************************/

static NTSTATUS smb_raw_ntioctl_recv(struct smbcli_request *req,

             TALLOC_CTX *mem_ctx,

             union smb_ioctl *parms)

{

  NTSTATUS status;

  struct smb_nttrans nt;

  TALLOC_CTX *tmp_mem;

  tmp_mem = talloc_new(mem_ctx);

  NT_STATUS_HAVE_NO_MEMORY(tmp_mem);

  status = smb_raw_nttrans_recv(req, tmp_mem, &nt);

  if (!NT_STATUS_IS_OK(status)) goto fail;

  parms->ntioctl.out.blob = nt.out.data;

  talloc_steal(mem_ctx, parms->ntioctl.out.blob.data);

fail:

  talloc_free(tmp_mem);

  return status;

}

/*

   send a raw ioctl - async send

*/

struct smbcli_request *smb_raw_ioctl_send(struct smbcli_tree *tree, union smb_ioctl *parms)

{

  struct smbcli_request *req = NULL;

  switch (parms->generic.level) {

  case RAW_IOCTL_IOCTL:

    req = smb_raw_smbioctl_send(tree, parms);

    break;

  case RAW_IOCTL_NTIOCTL:

    req = smb_raw_ntioctl_send(tree, parms);

    break;

  case RAW_IOCTL_SMB2:

  case RAW_IOCTL_SMB2_NO_HANDLE:

    return NULL;

  }

  return req;

}

/*

   recv a raw ioctl - async recv

*/

NTSTATUS smb_raw_ioctl_recv(struct smbcli_request *req,

          TALLOC_CTX *mem_ctx, union smb_ioctl *parms)

{

  switch (parms->generic.level) {

  case RAW_IOCTL_IOCTL:

    return smb_raw_smbioctl_recv(req, mem_ctx, parms);

  case RAW_IOCTL_NTIOCTL:

    return smb_raw_ntioctl_recv(req, mem_ctx, parms);

  case RAW_IOCTL_SMB2:

  case RAW_IOCTL_SMB2_NO_HANDLE:

    break;

  }

  return NT_STATUS_INVALID_LEVEL;

}

/*

   send a raw ioctl - sync interface

*/

NTSTATUS smb_raw_ioctl(struct smbcli_tree *tree,

    TALLOC_CTX *mem_ctx, union smb_ioctl *parms)

{

  struct smbcli_request *req;

  req = smb_raw_ioctl_send(tree, parms);

  return smb_raw_ioctl_recv(req, mem_ctx, parms);

}