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/*
Unix SMB/CIFS implementation.
client transaction calls
Copyright (C) Andrew Tridgell 1994-1998
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 "libsmb/libsmb.h"
#include "../lib/util/tevent_ntstatus.h"
#include "async_smb.h"
#include "../libcli/smb/smbXcli_base.h"
struct cli_trans_state {
struct cli_state *cli;
struct tevent_req *subreq;
uint16_t recv_flags2;
uint16_t *setup;
uint8_t num_setup;
uint8_t *param;
uint32_t num_param;
uint8_t *data;
uint32_t num_data;
};
static void cli_trans_done(struct tevent_req *subreq);
static bool cli_trans_cancel(struct tevent_req *req);
struct tevent_req *cli_trans_send(
TALLOC_CTX *mem_ctx, struct tevent_context *ev,
struct cli_state *cli, uint16_t additional_flags2, uint8_t cmd,
const char *pipe_name, uint16_t fid, uint16_t function, int flags,
uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
uint8_t *param, uint32_t num_param, uint32_t max_param,
uint8_t *data, uint32_t num_data, uint32_t max_data)
{
struct tevent_req *req;
struct cli_trans_state *state;
uint8_t additional_flags = 0;
uint8_t clear_flags = 0;
uint16_t clear_flags2 = 0;
req = tevent_req_create(mem_ctx, &state, struct cli_trans_state);
if (req == NULL) {
return NULL;
}
state->cli = cli;
state->subreq = smb1cli_trans_send(state, ev,
cli->conn, cmd,
additional_flags, clear_flags,
additional_flags2, clear_flags2,
cli->timeout,
cli->smb1.pid,
cli->smb1.tcon,
cli->smb1.session,
pipe_name, fid, function, flags,
setup, num_setup, max_setup,
param, num_param, max_param,
data, num_data, max_data);
if (tevent_req_nomem(state->subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(state->subreq, cli_trans_done, req);
tevent_req_set_cancel_fn(req, cli_trans_cancel);
return req;
}
static bool cli_trans_cancel(struct tevent_req *req)
{
struct cli_trans_state *state = tevent_req_data(
req, struct cli_trans_state);
bool ok;
ok = tevent_req_cancel(state->subreq);
return ok;
}
static void cli_trans_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct cli_trans_state *state = tevent_req_data(
req, struct cli_trans_state);
NTSTATUS status;
status = smb1cli_trans_recv(
subreq,
state,
&state->recv_flags2,
&state->setup, 0, &state->num_setup,
&state->param, 0, &state->num_param,
&state->data, 0, &state->num_data);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
tevent_req_done(req);
}
NTSTATUS cli_trans_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
uint16_t *recv_flags2,
uint16_t **setup, uint8_t min_setup,
uint8_t *num_setup,
uint8_t **param, uint32_t min_param,
uint32_t *num_param,
uint8_t **data, uint32_t min_data,
uint32_t *num_data)
{
struct cli_trans_state *state = tevent_req_data(
req, struct cli_trans_state);
NTSTATUS status = NT_STATUS_OK;
bool map_dos_errors = true;
if (tevent_req_is_nterror(req, &status)) {
goto map_error;
}
if ((state->num_setup < min_setup) ||
(state->num_param < min_param) ||
(state->num_data < min_data)) {
return NT_STATUS_INVALID_NETWORK_RESPONSE;
}
if (recv_flags2 != NULL) {
*recv_flags2 = state->recv_flags2;
}
if (setup != NULL) {
*setup = talloc_move(mem_ctx, &state->setup);
*num_setup = state->num_setup;
}
if (param != NULL) {
*param = talloc_move(mem_ctx, &state->param);
*num_param = state->num_param;
}
if (data != NULL) {
*data = talloc_move(mem_ctx, &state->data);
*num_data = state->num_data;
}
map_error:
map_dos_errors = state->cli->map_dos_errors;
state->cli->raw_status = status;
if (NT_STATUS_IS_DOS(status) && map_dos_errors) {
uint8_t eclass = NT_STATUS_DOS_CLASS(status);
uint16_t ecode = NT_STATUS_DOS_CODE(status);
/*
* TODO: is it really a good idea to do a mapping here?
*
* The old cli_pull_error() also does it, so I do not change
* the behavior yet.
*/
status = dos_to_ntstatus(eclass, ecode);
}
return status;
}
NTSTATUS cli_trans(TALLOC_CTX *mem_ctx, struct cli_state *cli,
uint8_t trans_cmd,
const char *pipe_name, uint16_t fid, uint16_t function,
int flags,
uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
uint8_t *param, uint32_t num_param, uint32_t max_param,
uint8_t *data, uint32_t num_data, uint32_t max_data,
uint16_t *recv_flags2,
uint16_t **rsetup, uint8_t min_rsetup, uint8_t *num_rsetup,
uint8_t **rparam, uint32_t min_rparam, uint32_t *num_rparam,
uint8_t **rdata, uint32_t min_rdata, uint32_t *num_rdata)
{
TALLOC_CTX *frame = talloc_stackframe();
struct tevent_context *ev;
struct tevent_req *req;
NTSTATUS status = NT_STATUS_NO_MEMORY;
if (smbXcli_conn_has_async_calls(cli->conn)) {
/*
* Can't use sync call while an async call is in flight
*/
status = NT_STATUS_INVALID_PARAMETER;
goto fail;
}
ev = samba_tevent_context_init(frame);
if (ev == NULL) {
goto fail;
}
req = cli_trans_send(
frame, /* mem_ctx */
ev, /* ev */
cli, /* cli */
0, /* additional_flags2 */
trans_cmd, /* cmd */
pipe_name, fid, function, flags,
setup, num_setup, max_setup,
param, num_param, max_param,
data, num_data, max_data);
if (req == NULL) {
goto fail;
}
if (!tevent_req_poll_ntstatus(req, ev, &status)) {
goto fail;
}
status = cli_trans_recv(
req, mem_ctx, recv_flags2,
rsetup, min_rsetup, num_rsetup,
rparam, min_rparam, num_rparam,
rdata, min_rdata, num_rdata);
fail:
TALLOC_FREE(frame);
return status;
}
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