/*
Unix SMB/CIFS implementation.
SMB2 composite connection setup
Copyright (C) Andrew Tridgell 2005
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 .
*/
#include "includes.h"
#include
#include "lib/util/tevent_ntstatus.h"
#include "libcli/raw/libcliraw.h"
#include "libcli/raw/raw_proto.h"
#include "libcli/smb2/smb2.h"
#include "libcli/smb2/smb2_calls.h"
#include "libcli/composite/composite.h"
#include "libcli/resolve/resolve.h"
#include "param/param.h"
#include "../libcli/smb/smbXcli_base.h"
struct smb2_connect_state {
struct tevent_context *ev;
struct cli_credentials *credentials;
struct resolve_context *resolve_ctx;
const char *host;
const char *share;
const char **ports;
const char *socket_options;
struct gensec_settings *gensec_settings;
struct smbcli_options options;
struct smb2_transport *transport;
struct smb2_tree_connect tcon;
struct smb2_session *session;
struct smb2_tree *tree;
};
static void smb2_connect_resolve_done(struct composite_context *creq);
/*
a composite function that does a full negprot/sesssetup/tcon, returning
a connected smb2_tree
*/
struct tevent_req *smb2_connect_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
const char *host,
const char **ports,
const char *share,
struct resolve_context *resolve_ctx,
struct cli_credentials *credentials,
struct smbcli_options *options,
const char *socket_options,
struct gensec_settings *gensec_settings)
{
struct tevent_req *req;
struct smb2_connect_state *state;
struct nbt_name name;
struct composite_context *creq;
req = tevent_req_create(mem_ctx, &state,
struct smb2_connect_state);
if (req == NULL) {
return NULL;
}
state->ev = ev;
state->credentials = credentials;
state->options = *options;
state->host = host;
state->ports = ports;
state->share = share;
state->resolve_ctx = resolve_ctx;
state->socket_options = socket_options;
state->gensec_settings = gensec_settings;
ZERO_STRUCT(name);
name.name = host;
creq = resolve_name_send(resolve_ctx, state, &name, ev);
if (tevent_req_nomem(creq, req)) {
return tevent_req_post(req, ev);
}
creq->async.fn = smb2_connect_resolve_done;
creq->async.private_data = req;
return req;
}
static void smb2_connect_socket_done(struct composite_context *creq);
static void smb2_connect_resolve_done(struct composite_context *creq)
{
struct tevent_req *req =
talloc_get_type_abort(creq->async.private_data,
struct tevent_req);
struct smb2_connect_state *state =
tevent_req_data(req,
struct smb2_connect_state);
NTSTATUS status;
const char *addr;
const char **ports;
const char *default_ports[] = { "445", NULL };
status = resolve_name_recv(creq, state, &addr);
if (tevent_req_nterror(req, status)) {
return;
}
if (state->ports == NULL) {
ports = default_ports;
} else {
ports = state->ports;
}
creq = smbcli_sock_connect_send(state, addr, ports,
state->host, state->resolve_ctx,
state->ev, state->socket_options);
if (tevent_req_nomem(creq, req)) {
return;
}
creq->async.fn = smb2_connect_socket_done;
creq->async.private_data = req;
}
static void smb2_connect_negprot_done(struct tevent_req *subreq);
static void smb2_connect_socket_done(struct composite_context *creq)
{
struct tevent_req *req =
talloc_get_type_abort(creq->async.private_data,
struct tevent_req);
struct smb2_connect_state *state =
tevent_req_data(req,
struct smb2_connect_state);
struct smbcli_socket *sock;
struct tevent_req *subreq;
NTSTATUS status;
uint32_t timeout_msec;
status = smbcli_sock_connect_recv(creq, state, &sock);
if (tevent_req_nterror(req, status)) {
return;
}
state->transport = smb2_transport_init(sock, state, &state->options);
if (tevent_req_nomem(state->transport, req)) {
return;
}
timeout_msec = state->transport->options.request_timeout * 1000;
subreq = smbXcli_negprot_send(state, state->ev,
state->transport->conn, timeout_msec,
PROTOCOL_SMB2_02, PROTOCOL_SMB2_22);
if (tevent_req_nomem(subreq, req)) {
return;
}
tevent_req_set_callback(subreq, smb2_connect_negprot_done, req);
}
static void smb2_connect_session_done(struct tevent_req *subreq);
static void smb2_connect_negprot_done(struct tevent_req *subreq)
{
struct tevent_req *req =
tevent_req_callback_data(subreq,
struct tevent_req);
struct smb2_connect_state *state =
tevent_req_data(req,
struct smb2_connect_state);
struct smb2_transport *transport = state->transport;
NTSTATUS status;
status = smbXcli_negprot_recv(subreq);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
/* This is a hack... */
smb2cli_conn_set_max_credits(transport->conn, 30);
state->session = smb2_session_init(transport, state->gensec_settings, state, true);
if (tevent_req_nomem(state->session, req)) {
return;
}
subreq = smb2_session_setup_spnego_send(state, state->ev,
state->session,
state->credentials);
if (tevent_req_nomem(subreq, req)) {
return;
}
tevent_req_set_callback(subreq, smb2_connect_session_done, req);
}
static void smb2_connect_tcon_done(struct smb2_request *smb2req);
static void smb2_connect_session_done(struct tevent_req *subreq)
{
struct tevent_req *req =
tevent_req_callback_data(subreq,
struct tevent_req);
struct smb2_connect_state *state =
tevent_req_data(req,
struct smb2_connect_state);
struct smb2_request *smb2req;
NTSTATUS status;
status = smb2_session_setup_spnego_recv(subreq);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
state->tree = smb2_tree_init(state->session, state, true);
if (tevent_req_nomem(state->tree, req)) {
return;
}
state->tcon.in.reserved = 0;
state->tcon.in.path = talloc_asprintf(state, "\\\\%s\\%s",
state->host, state->share);
if (tevent_req_nomem(state->tcon.in.path, req)) {
return;
}
smb2req = smb2_tree_connect_send(state->tree, &state->tcon);
if (tevent_req_nomem(smb2req, req)) {
return;
}
smb2req->async.fn = smb2_connect_tcon_done;
smb2req->async.private_data = req;
}
static void smb2_connect_tcon_done(struct smb2_request *smb2req)
{
struct tevent_req *req =
talloc_get_type_abort(smb2req->async.private_data,
struct tevent_req);
struct smb2_connect_state *state =
tevent_req_data(req,
struct smb2_connect_state);
NTSTATUS status;
status = smb2_tree_connect_recv(smb2req, &state->tcon);
if (tevent_req_nterror(req, status)) {
return;
}
state->tree->tid = state->tcon.out.tid;
tevent_req_done(req);
}
NTSTATUS smb2_connect_recv(struct tevent_req *req,
TALLOC_CTX *mem_ctx,
struct smb2_tree **tree)
{
struct smb2_connect_state *state =
tevent_req_data(req,
struct smb2_connect_state);
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
tevent_req_received(req);
return status;
}
*tree = talloc_move(mem_ctx, &state->tree);
tevent_req_received(req);
return NT_STATUS_OK;
}
/*
sync version of smb2_connect
*/
NTSTATUS smb2_connect(TALLOC_CTX *mem_ctx,
const char *host,
const char **ports,
const char *share,
struct resolve_context *resolve_ctx,
struct cli_credentials *credentials,
struct smb2_tree **tree,
struct tevent_context *ev,
struct smbcli_options *options,
const char *socket_options,
struct gensec_settings *gensec_settings)
{
struct tevent_req *subreq;
NTSTATUS status;
bool ok;
TALLOC_CTX *frame = talloc_stackframe();
if (frame == NULL) {
return NT_STATUS_NO_MEMORY;
}
subreq = smb2_connect_send(frame,
ev,
host,
ports,
share,
resolve_ctx,
credentials,
options,
socket_options,
gensec_settings);
if (subreq == NULL) {
TALLOC_FREE(frame);
return NT_STATUS_NO_MEMORY;
}
ok = tevent_req_poll(subreq, ev);
if (!ok) {
status = map_nt_error_from_unix_common(errno);
TALLOC_FREE(frame);
return status;
}
status = smb2_connect_recv(subreq, mem_ctx, tree);
TALLOC_FREE(subreq);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(frame);
return status;
}
TALLOC_FREE(frame);
return NT_STATUS_OK;
}