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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_tcon_state {
struct cli_state *cli;
uint8_t fixed[8];
};
static void smb2cli_tcon_done(struct tevent_req *subreq);
struct tevent_req *smb2cli_tcon_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct cli_state *cli,
const char *share)
{
struct tevent_req *req, *subreq;
struct smb2cli_tcon_state *state;
uint8_t *fixed;
char srv_ip[INET6_ADDRSTRLEN];
const char *tcon_share;
uint8_t *dyn;
size_t dyn_len;
req = tevent_req_create(mem_ctx, &state, struct smb2cli_tcon_state);
if (req == NULL) {
return NULL;
}
state->cli = cli;
print_sockaddr(srv_ip, sizeof(srv_ip), &cli->dest_ss);
tcon_share = talloc_asprintf(talloc_tos(), "\\\\%s\\%s",
srv_ip, share);
if (tevent_req_nomem(tcon_share, req)) {
return tevent_req_post(req, ev);
}
if (!convert_string_talloc(state, CH_UNIX, CH_UTF16,
tcon_share, talloc_get_size(tcon_share),
&dyn, &dyn_len)) {
tevent_req_nomem(NULL, req);
return tevent_req_post(req, ev);
}
fixed = state->fixed;
SSVAL(fixed, 0, 9);
SSVAL(fixed, 4, SMB2_HDR_BODY + 8);
SSVAL(fixed, 6, dyn_len);
subreq = smb2cli_req_send(state, ev, cli, SMB2_OP_TCON, 0,
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_tcon_done, req);
return req;
}
static void smb2cli_tcon_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct smb2cli_tcon_state *state = tevent_req_data(
req, struct smb2cli_tcon_state);
struct cli_state *cli = state->cli;
NTSTATUS status;
struct iovec *iov;
uint8_t *body;
status = smb2cli_req_recv(subreq, talloc_tos(), &iov, 16);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(subreq);
tevent_req_nterror(req, status);
return;
}
cli->smb2.tid = IVAL(iov[0].iov_base, SMB2_HDR_TID);
body = (uint8_t *)iov[1].iov_base;
cli->smb2.share_type = CVAL(body, 2);
cli->smb2.share_flags = IVAL(body, 4);
cli->capabilities = IVAL(body, 8);
cli->smb2.maximal_access = IVAL(body, 12);
TALLOC_FREE(subreq);
tevent_req_done(req);
}
NTSTATUS smb2cli_tcon_recv(struct tevent_req *req)
{
return tevent_req_simple_recv_ntstatus(req);
}
NTSTATUS smb2cli_tcon(struct cli_state *cli, const char *share)
{
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_tcon_send(frame, ev, cli, share);
if (req == NULL) {
goto fail;
}
if (!tevent_req_poll_ntstatus(req, ev, &status)) {
goto fail;
}
status = smb2cli_tcon_recv(req);
fail:
TALLOC_FREE(frame);
return status;
}
struct smb2cli_tdis_state {
uint8_t fixed[4];
};
static void smb2cli_tdis_done(struct tevent_req *subreq);
struct tevent_req *smb2cli_tdis_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct cli_state *cli)
{
struct tevent_req *req, *subreq;
struct smb2cli_tdis_state *state;
req = tevent_req_create(mem_ctx, &state,
struct smb2cli_tdis_state);
if (req == NULL) {
return NULL;
}
SSVAL(state->fixed, 0, 4);
subreq = smb2cli_req_send(state, ev, cli, SMB2_OP_TDIS, 0,
state->fixed, sizeof(state->fixed),
NULL, 0);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, smb2cli_tdis_done, req);
return req;
}
static void smb2cli_tdis_done(struct tevent_req *subreq)
{
struct tevent_req *req =
tevent_req_callback_data(subreq,
struct tevent_req);
NTSTATUS status;
struct iovec *iov;
status = smb2cli_req_recv(subreq, talloc_tos(), &iov, 4);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
tevent_req_done(req);
}
NTSTATUS smb2cli_tdis_recv(struct tevent_req *req)
{
return tevent_req_simple_recv_ntstatus(req);
}
NTSTATUS smb2cli_tdis(struct cli_state *cli)
{
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_tdis_send(frame, ev, cli);
if (req == NULL) {
goto fail;
}
if (!tevent_req_poll_ntstatus(req, ev, &status)) {
goto fail;
}
status = smb2cli_tdis_recv(req);
fail:
TALLOC_FREE(frame);
return status;
}
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