2 Unix SMB/CIFS implementation.
4 SMB2 client library header
6 Copyright (C) Andrew Tridgell 2005
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #ifndef __LIBCLI_SMB2_SMB2_H__
23 #define __LIBCLI_SMB2_SMB2_H__
25 #include "libcli/raw/request.h"
26 #include "libcli/raw/libcliraw.h"
29 struct smb2_lease_break;
32 information returned from the negotiate process
34 struct smb2_negotiate {
37 NTTIME server_start_time;
38 uint16_t security_mode;
39 uint16_t dialect_revision;
42 struct smb2_request_buffer {
43 /* the raw SMB2 buffer, including the 4 byte length header */
46 /* the size of the raw buffer, including 4 byte header */
49 /* how much has been allocated - on reply the buffer is over-allocated to
50 prevent too many realloc() calls
54 /* the start of the SMB2 header - this is always buffer+4 */
62 /* this point to the next dynamic byte that can be used
63 * this will be moved when some dynamic data is pushed
67 /* this is used to range check and align strings and buffers */
68 struct request_bufinfo bufinfo;
71 /* this is the context for the smb2 transport layer */
72 struct smb2_transport {
73 /* socket level info */
74 struct smbcli_socket *socket;
76 struct smb2_negotiate negotiate;
78 /* next seqnum to allocate */
81 /* the details for coumpounded requests */
85 struct smb2_request_buffer buffer;
93 /* a list of requests that are pending for receive on this
95 struct smb2_request *pending_recv;
97 /* context of the stream -> packet parser */
98 struct packet_context *packet;
100 /* an idle function - if this is defined then it will be
101 called once every period microseconds while we are waiting
104 void (*func)(struct smb2_transport *, void *);
110 /* a oplock break request handler */
111 bool (*handler)(struct smb2_transport *transport,
112 const struct smb2_handle *handle,
113 uint8_t level, void *private_data);
114 /* private data passed to the oplock handler */
119 /* a lease break request handler */
120 bool (*handler)(struct smb2_transport *transport,
121 const struct smb2_lease_break *lease_break,
123 /* private data passed to the oplock handler */
127 struct smbcli_options options;
129 bool signing_required;
137 struct smb2_session *session;
144 struct smb2_session {
145 struct smb2_transport *transport;
146 struct gensec_security *gensec;
148 DATA_BLOB session_key;
155 a client request moves between the following 4 states.
157 enum smb2_request_state {SMB2_REQUEST_INIT, /* we are creating the request */
158 SMB2_REQUEST_RECV, /* we are waiting for a matching reply */
159 SMB2_REQUEST_DONE, /* the request is finished */
160 SMB2_REQUEST_ERROR}; /* a packet or transport level error has occurred */
162 /* the context for a single SMB2 request */
163 struct smb2_request {
164 /* allow a request to be part of a list of requests */
165 struct smb2_request *next, *prev;
167 /* each request is in one of 3 possible states */
168 enum smb2_request_state state;
170 struct smb2_transport *transport;
171 struct smb2_session *session;
172 struct smb2_tree *tree;
182 /* the NT status for this request. Set by packet receive code
183 or code detecting error. */
186 struct smb2_request_buffer in;
187 struct smb2_request_buffer out;
189 /* information on what to do with a reply when it is received
190 asyncronously. If this is not setup when a reply is received then
191 the reply is discarded
193 The private pointer is private to the caller of the client
194 library (the application), not private to the library
197 void (*fn)(struct smb2_request *);
203 #define SMB2_MIN_SIZE 0x42
204 #define SMB2_MIN_SIZE_NO_BODY 0x40
207 check that a body has the expected size
209 #define SMB2_CHECK_PACKET_RECV(req, size, dynamic) do { \
210 size_t is_size = req->in.body_size; \
211 uint16_t field_size = SVAL(req->in.body, 0); \
212 uint16_t want_size = ((dynamic)?(size)+1:(size)); \
213 if (is_size < (size)) { \
214 DEBUG(0,("%s: buffer too small 0x%x. Expected 0x%x\n", \
215 __location__, (unsigned)is_size, (unsigned)want_size)); \
216 return NT_STATUS_BUFFER_TOO_SMALL; \
218 if (field_size != want_size) { \
219 DEBUG(0,("%s: unexpected fixed body size 0x%x. Expected 0x%x\n", \
220 __location__, (unsigned)field_size, (unsigned)want_size)); \
221 return NT_STATUS_INVALID_PARAMETER; \