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/*
Unix SMB/CIFS implementation.
smb2 lib
Copyright (C) Volker Lendecke 2011
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 "client.h"
#include "async_smb.h"
#include "smb2cli_base.h"
#include "smb2cli.h"
#include "libsmb/proto.h"
#include "lib/util/tevent_ntstatus.h"
struct smb2cli_query_directory_state {
uint8_t fixed[32];
uint8_t dyn_pad[1];
struct iovec *recv_iov;
uint8_t *data;
uint32_t data_length;
};
static void smb2cli_query_directory_done(struct tevent_req *subreq);
struct tevent_req *smb2cli_query_directory_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct cli_state *cli,
uint8_t level,
uint8_t flags,
uint32_t file_index,
uint64_t fid_persistent,
uint64_t fid_volatile,
const char *mask,
uint32_t outbuf_len)
{
struct tevent_req *req, *subreq;
struct smb2cli_query_directory_state *state;
uint8_t *fixed;
uint8_t *dyn;
size_t dyn_len;
req = tevent_req_create(mem_ctx, &state,
struct smb2cli_query_directory_state);
if (req == NULL) {
return NULL;
}
if (!convert_string_talloc(state, CH_UNIX, CH_UTF16,
mask, strlen(mask),
&dyn, &dyn_len)) {
tevent_req_oom(req);
return tevent_req_post(req, ev);
}
if (strlen(mask) == 0) {
TALLOC_FREE(dyn);
dyn_len = 0;
}
fixed = state->fixed;
SSVAL(fixed, 0, 33);
SCVAL(fixed, 2, level);
SCVAL(fixed, 3, flags);
SIVAL(fixed, 4, file_index);
SBVAL(fixed, 8, fid_persistent);
SBVAL(fixed, 16, fid_volatile);
SSVAL(fixed, 24, SMB2_HDR_BODY + 32);
SSVAL(fixed, 26, dyn_len);
SSVAL(fixed, 28, outbuf_len);
if (dyn_len == 0) {
dyn = state->dyn_pad;
dyn_len = sizeof(state->dyn_pad);
}
subreq = smb2cli_req_send(state, ev, cli, SMB2_OP_FIND,
0, 0, /* flags */
cli->smb2.pid,
cli->smb2.tid,
cli->smb2.uid,
state->fixed, sizeof(state->fixed),
dyn, dyn_len);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, smb2cli_query_directory_done, req);
return req;
}
static void smb2cli_query_directory_done(struct tevent_req *subreq)
{
struct tevent_req *req =
tevent_req_callback_data(subreq,
struct tevent_req);
struct smb2cli_query_directory_state *state =
tevent_req_data(req,
struct smb2cli_query_directory_state);
NTSTATUS status;
struct iovec *iov;
uint16_t data_offset;
status = smb2cli_req_recv(subreq, state, &iov, 9);
if (tevent_req_nterror(req, status)) {
return;
}
data_offset = SVAL(iov[1].iov_base, 2);
state->data_length = IVAL(iov[1].iov_base, 4);
if ((data_offset != SMB2_HDR_BODY + 8) ||
(state->data_length > iov[2].iov_len)) {
tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
return;
}
state->recv_iov = iov;
state->data = (uint8_t *)iov[2].iov_base;
tevent_req_done(req);
}
NTSTATUS smb2cli_query_directory_recv(struct tevent_req *req,
TALLOC_CTX *mem_ctx,
uint8_t **data,
uint32_t *data_length)
{
struct smb2cli_query_directory_state *state =
tevent_req_data(req,
struct smb2cli_query_directory_state);
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
return status;
}
talloc_steal(mem_ctx, state->recv_iov);
*data_length = state->data_length;
*data = state->data;
return NT_STATUS_OK;
}
NTSTATUS smb2cli_query_directory(struct cli_state *cli,
uint8_t level,
uint8_t flags,
uint32_t file_index,
uint64_t fid_persistent,
uint64_t fid_volatile,
const char *mask,
uint32_t outbuf_len,
TALLOC_CTX *mem_ctx,
uint8_t **data,
uint32_t *data_length)
{
TALLOC_CTX *frame = talloc_stackframe();
struct event_context *ev;
struct tevent_req *req;
NTSTATUS status = NT_STATUS_NO_MEMORY;
if (cli_has_async_calls(cli)) {
/*
* Can't use sync call while an async call is in flight
*/
status = NT_STATUS_INVALID_PARAMETER;
goto fail;
}
ev = event_context_init(frame);
if (ev == NULL) {
goto fail;
}
req = smb2cli_query_directory_send(frame, ev, cli, level, flags,
file_index, fid_persistent,
fid_volatile, mask, outbuf_len);
if (req == NULL) {
goto fail;
}
if (!tevent_req_poll_ntstatus(req, ev, &status)) {
goto fail;
}
status = smb2cli_query_directory_recv(req, mem_ctx,
data, data_length);
fail:
TALLOC_FREE(frame);
return status;
}
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