2 Unix SMB/CIFS implementation.
4 Copyright (C) Stefan Metzmacher 2018
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #include "lib/util/tevent_ntstatus.h"
22 #include "libcli/composite/composite.h"
23 #include "libcli/raw/libcliraw.h"
24 #include "libcli/raw/raw_proto.h"
25 #include "libcli/smb_composite/smb_composite.h"
26 #include "lib/socket/socket.h"
27 #include "libcli/resolve/resolve.h"
28 #include "librpc/gen_ndr/ndr_nbt.h"
29 #include "libcli/smb/smbXcli_base.h"
31 struct smb_connect_nego_state {
32 struct tevent_context *ev;
33 struct resolve_context *resolve_ctx;
34 const char *socket_options;
35 struct smbcli_options options;
36 const char *dest_hostname;
37 const char *dest_address;
38 const char **dest_ports;
39 const char *target_hostname;
40 struct nbt_name calling, called;
41 struct smbXcli_conn *conn;
44 static void smb_connect_nego_connect_done(struct composite_context *creq);
45 static void smb_connect_nego_nego_done(struct tevent_req *subreq);
47 struct tevent_req *smb_connect_nego_send(TALLOC_CTX *mem_ctx,
48 struct tevent_context *ev,
49 struct resolve_context *resolve_ctx,
50 const struct smbcli_options *options,
51 const char *socket_options,
52 const char *dest_hostname,
53 const char *dest_address, /* optional */
54 const char **dest_ports,
55 const char *target_hostname,
56 const char *called_name,
57 const char *calling_name)
59 struct tevent_req *req = NULL;
60 struct smb_connect_nego_state *state = NULL;
61 struct composite_context *creq = NULL;
63 req = tevent_req_create(mem_ctx, &state,
64 struct smb_connect_nego_state);
69 state->resolve_ctx= resolve_ctx;
70 state->options = *options;
71 state->socket_options = socket_options;
72 state->dest_hostname = dest_hostname;
73 state->dest_address = dest_address;
74 state->dest_ports = dest_ports;
75 state->target_hostname = target_hostname;
77 make_nbt_name_client(&state->calling, calling_name);
79 nbt_choose_called_name(state, &state->called,
80 called_name, NBT_NAME_SERVER);
81 if (tevent_req_nomem(state->called.name, req)) {
82 return tevent_req_post(req, ev);
85 creq = smbcli_sock_connect_send(state,
91 state->socket_options,
94 if (tevent_req_nomem(creq, req)) {
95 return tevent_req_post(req, ev);
97 creq->async.private_data = req;
98 creq->async.fn = smb_connect_nego_connect_done;
103 static void smb_connect_nego_connect_done(struct composite_context *creq)
105 struct tevent_req *req =
106 talloc_get_type_abort(creq->async.private_data,
108 struct smb_connect_nego_state *state =
110 struct smb_connect_nego_state);
111 struct tevent_req *subreq = NULL;
112 struct smbcli_socket *sock = NULL;
113 uint32_t smb1_capabilities;
114 uint32_t timeout_msec = state->options.request_timeout * 1000;
117 status = smbcli_sock_connect_recv(creq, state, &sock);
119 if (tevent_req_nterror(req, status)) {
123 TALLOC_FREE(sock->event.fde);
124 TALLOC_FREE(sock->event.te);
126 smb1_capabilities = 0;
127 smb1_capabilities |= CAP_LARGE_FILES;
128 smb1_capabilities |= CAP_NT_SMBS | CAP_RPC_REMOTE_APIS;
129 smb1_capabilities |= CAP_LOCK_AND_READ | CAP_NT_FIND;
130 smb1_capabilities |= CAP_DFS | CAP_W2K_SMBS;
131 smb1_capabilities |= CAP_LARGE_READX|CAP_LARGE_WRITEX;
132 smb1_capabilities |= CAP_LWIO;
134 if (state->options.ntstatus_support) {
135 smb1_capabilities |= CAP_STATUS32;
138 if (state->options.unicode) {
139 smb1_capabilities |= CAP_UNICODE;
142 if (state->options.use_spnego) {
143 smb1_capabilities |= CAP_EXTENDED_SECURITY;
146 if (state->options.use_level2_oplocks) {
147 smb1_capabilities |= CAP_LEVEL_II_OPLOCKS;
150 state->conn = smbXcli_conn_create(state,
152 state->target_hostname,
153 state->options.signing,
155 &state->options.client_guid,
156 state->options.smb2_capabilities);
157 if (tevent_req_nomem(state->conn, req)) {
163 subreq = smbXcli_negprot_send(state,
167 state->options.min_protocol,
168 state->options.max_protocol,
169 state->options.max_credits);
170 if (tevent_req_nomem(subreq, req)) {
173 tevent_req_set_callback(subreq, smb_connect_nego_nego_done, req);
176 static void smb_connect_nego_nego_done(struct tevent_req *subreq)
178 struct tevent_req *req =
179 tevent_req_callback_data(subreq,
183 status = smbXcli_negprot_recv(subreq);
185 if (tevent_req_nterror(req, status)) {
189 tevent_req_done(req);
192 NTSTATUS smb_connect_nego_recv(struct tevent_req *req,
194 struct smbXcli_conn **_conn)
196 struct smb_connect_nego_state *state =
198 struct smb_connect_nego_state);
201 if (tevent_req_is_nterror(req, &status)) {
202 tevent_req_received(req);
206 *_conn = talloc_move(mem_ctx, &state->conn);
207 tevent_req_received(req);