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/*
Unix SMB/CIFS implementation.
SMB client negotiate context management functions
Copyright (C) Andrew Tridgell 1994-2005
Copyright (C) James 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 <tevent.h>
#include "system/time.h"
#include "libcli/raw/libcliraw.h"
#include "libcli/raw/raw_proto.h"
#include "../libcli/smb/smbXcli_base.h"
#include "../lib/util/tevent_ntstatus.h"
NTSTATUS smb_raw_negotiate_fill_transport(struct smbcli_transport *transport)
{
struct smbcli_negotiate *n = &transport->negotiate;
struct smbXcli_conn *c = transport->conn;
NTTIME ntt;
n->protocol = smbXcli_conn_protocol(c);
if (n->protocol > PROTOCOL_NT1) {
return NT_STATUS_REVISION_MISMATCH;
}
n->sec_mode = smb1cli_conn_server_security_mode(c);
n->max_mux = smbXcli_conn_max_requests(c);
n->max_xmit = smb1cli_conn_max_xmit(c);
n->sesskey = smb1cli_conn_server_session_key(c);
n->capabilities = smb1cli_conn_capabilities(c);;
/* this time arrives in real GMT */
ntt = smbXcli_conn_server_system_time(c);
n->server_time = nt_time_to_unix(ntt);
n->server_zone = smb1cli_conn_server_time_zone(c);
if (n->capabilities & CAP_EXTENDED_SECURITY) {
const DATA_BLOB *b = smbXcli_conn_server_gss_blob(c);
if (b) {
n->secblob = *b;
}
} else {
const uint8_t *p = smb1cli_conn_server_challenge(c);
if (p) {
n->secblob = data_blob_const(p, 8);
}
}
n->readbraw_supported = smb1cli_conn_server_readbraw(c);
n->readbraw_supported = smb1cli_conn_server_writebraw(c);
n->lockread_supported = smb1cli_conn_server_lockread(c);
return NT_STATUS_OK;
}
struct smb_raw_negotiate_state {
struct smbcli_transport *transport;
};
static void smb_raw_negotiate_done(struct tevent_req *subreq);
struct tevent_req *smb_raw_negotiate_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct smbcli_transport *transport,
int minprotocol,
int maxprotocol)
{
struct tevent_req *req;
struct smb_raw_negotiate_state *state;
struct tevent_req *subreq;
uint32_t timeout_msec = transport->options.request_timeout * 1000;
req = tevent_req_create(mem_ctx, &state,
struct smb_raw_negotiate_state);;
if (req == NULL) {
return NULL;
}
state->transport = transport;
if (maxprotocol > PROTOCOL_NT1) {
maxprotocol = PROTOCOL_NT1;
}
if (minprotocol > maxprotocol) {
minprotocol = maxprotocol;
}
subreq = smbXcli_negprot_send(state, ev,
transport->conn,
timeout_msec,
minprotocol,
maxprotocol,
transport->options.max_credits,
NULL);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, smb_raw_negotiate_done, req);
return req;
}
static void smb_raw_negotiate_done(struct tevent_req *subreq)
{
struct tevent_req *req =
tevent_req_callback_data(subreq,
struct tevent_req);
struct smb_raw_negotiate_state *state =
tevent_req_data(req,
struct smb_raw_negotiate_state);
NTSTATUS status;
status = smbXcli_negprot_recv(subreq, NULL, NULL);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
status = smb_raw_negotiate_fill_transport(state->transport);
if (tevent_req_nterror(req, status)) {
return;
}
tevent_req_done(req);
}
/*
Send a negprot command.
*/
NTSTATUS smb_raw_negotiate_recv(struct tevent_req *req)
{
return tevent_req_simple_recv_ntstatus(req);
}
/*
Send a negprot command (sync interface)
*/
NTSTATUS smb_raw_negotiate(struct smbcli_transport *transport, bool unicode,
int minprotocol, int maxprotocol)
{
NTSTATUS status;
struct tevent_req *subreq = NULL;
bool ok;
subreq = smb_raw_negotiate_send(transport,
transport->ev,
transport,
minprotocol,
maxprotocol);
if (subreq == NULL) {
status = NT_STATUS_NO_MEMORY;
goto failed;
}
ok = tevent_req_poll(subreq, transport->ev);
if (!ok) {
status = map_nt_error_from_unix_common(errno);
goto failed;
}
status = smb_raw_negotiate_recv(subreq);
failed:
TALLOC_FREE(subreq);
return status;
}
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