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"
31 information returned from the negotiate process
33 struct smb2_negotiate {
36 NTTIME server_start_time;
37 uint16_t security_mode;
38 uint16_t dialect_revision;
41 /* this is the context for the smb2 transport layer */
42 struct smb2_transport {
43 /* socket level info */
44 struct smbcli_socket *socket;
46 struct smb2_negotiate negotiate;
48 /* next seqnum to allocate */
51 /* a list of requests that are pending for receive on this
53 struct smb2_request *pending_recv;
55 /* context of the stream -> packet parser */
56 struct packet_context *packet;
58 /* an idle function - if this is defined then it will be
59 called once every period microseconds while we are waiting
62 void (*func)(struct smb2_transport *, void *);
68 /* a oplock break request handler */
69 bool (*handler)(struct smb2_transport *transport,
70 const struct smb2_handle *handle,
71 uint8_t level, void *private_data);
72 /* private data passed to the oplock handler */
76 struct smbcli_options options;
78 bool signing_required;
86 struct smb2_session *session;
94 struct smb2_transport *transport;
95 struct gensec_security *gensec;
97 DATA_BLOB session_key;
102 struct smb2_request_buffer {
103 /* the raw SMB2 buffer, including the 4 byte length header */
106 /* the size of the raw buffer, including 4 byte header */
109 /* how much has been allocated - on reply the buffer is over-allocated to
110 prevent too many realloc() calls
114 /* the start of the SMB2 header - this is always buffer+4 */
117 /* the packet body */
122 /* this point to the next dynamic byte that can be used
123 * this will be moved when some dynamic data is pushed
127 /* this is used to range check and align strings and buffers */
128 struct request_bufinfo bufinfo;
133 a client request moves between the following 4 states.
135 enum smb2_request_state {SMB2_REQUEST_INIT, /* we are creating the request */
136 SMB2_REQUEST_RECV, /* we are waiting for a matching reply */
137 SMB2_REQUEST_DONE, /* the request is finished */
138 SMB2_REQUEST_ERROR}; /* a packet or transport level error has occurred */
140 /* the context for a single SMB2 request */
141 struct smb2_request {
142 /* allow a request to be part of a list of requests */
143 struct smb2_request *next, *prev;
145 /* each request is in one of 3 possible states */
146 enum smb2_request_state state;
148 struct smb2_transport *transport;
149 struct smb2_session *session;
150 struct smb2_tree *tree;
160 /* the NT status for this request. Set by packet receive code
161 or code detecting error. */
164 struct smb2_request_buffer in;
165 struct smb2_request_buffer out;
167 /* information on what to do with a reply when it is received
168 asyncronously. If this is not setup when a reply is received then
169 the reply is discarded
171 The private pointer is private to the caller of the client
172 library (the application), not private to the library
175 void (*fn)(struct smb2_request *);
181 #define SMB2_MIN_SIZE 0x42
182 #define SMB2_MIN_SIZE_NO_BODY 0x40
184 /* offsets into header elements for a sync SMB2 request */
185 #define SMB2_HDR_PROTOCOL_ID 0x00
186 #define SMB2_HDR_LENGTH 0x04
187 #define SMB2_HDR_EPOCH 0x06
188 #define SMB2_HDR_STATUS 0x08
189 #define SMB2_HDR_OPCODE 0x0c
190 #define SMB2_HDR_CREDIT 0x0e
191 #define SMB2_HDR_FLAGS 0x10
192 #define SMB2_HDR_NEXT_COMMAND 0x14
193 #define SMB2_HDR_MESSAGE_ID 0x18
194 #define SMB2_HDR_PID 0x20
195 #define SMB2_HDR_TID 0x24
196 #define SMB2_HDR_SESSION_ID 0x28
197 #define SMB2_HDR_SIGNATURE 0x30 /* 16 bytes */
198 #define SMB2_HDR_BODY 0x40
201 #define SMB2_HDR_FLAG_REDIRECT 0x01
202 #define SMB2_HDR_FLAG_ASYNC 0x02
203 #define SMB2_HDR_FLAG_CHAINED 0x04
204 #define SMB2_HDR_FLAG_SIGNED 0x08
205 #define SMB2_HDR_FLAG_DFS 0x10000000
208 #define SMB2_OP_NEGPROT 0x00
209 #define SMB2_OP_SESSSETUP 0x01
210 #define SMB2_OP_LOGOFF 0x02
211 #define SMB2_OP_TCON 0x03
212 #define SMB2_OP_TDIS 0x04
213 #define SMB2_OP_CREATE 0x05
214 #define SMB2_OP_CLOSE 0x06
215 #define SMB2_OP_FLUSH 0x07
216 #define SMB2_OP_READ 0x08
217 #define SMB2_OP_WRITE 0x09
218 #define SMB2_OP_LOCK 0x0a
219 #define SMB2_OP_IOCTL 0x0b
220 #define SMB2_OP_CANCEL 0x0c
221 #define SMB2_OP_KEEPALIVE 0x0d
222 #define SMB2_OP_FIND 0x0e
223 #define SMB2_OP_NOTIFY 0x0f
224 #define SMB2_OP_GETINFO 0x10
225 #define SMB2_OP_SETINFO 0x11
226 #define SMB2_OP_BREAK 0x12
228 #define SMB2_MAGIC 0x424D53FE /* 0xFE 'S' 'M' 'B' */
230 /* the dialects we support */
231 #define SMB2_DIALECT_REVISION 0x202
232 #define SMB21_DIALECT_REVISION 0x210
233 #define SMB2_LONGHORN_BETA_DIALECT_REVISION 0x0 /* early beta dialect */
235 /* SMB2 negotiate security_mode */
236 #define SMB2_NEGOTIATE_SIGNING_ENABLED 0x01
237 #define SMB2_NEGOTIATE_SIGNING_REQUIRED 0x02
239 /* SMB2 capabilities - only 1 so far. I'm sure more will be added */
240 #define SMB2_CAP_DFS 0x0
241 /* so we can spot new caps as added */
242 #define SMB2_CAP_ALL SMB2_CAP_DFS
244 /* SMB2 share flags */
245 #define SMB2_SHAREFLAG_MANUAL_CACHING 0x0000
246 #define SMB2_SHAREFLAG_AUTO_CACHING 0x0010
247 #define SMB2_SHAREFLAG_VDO_CACHING 0x0020
248 #define SMB2_SHAREFLAG_NO_CACHING 0x0030
249 #define SMB2_SHAREFLAG_DFS 0x0001
250 #define SMB2_SHAREFLAG_DFS_ROOT 0x0002
251 #define SMB2_SHAREFLAG_RESTRICT_EXCLUSIVE_OPENS 0x0100
252 #define SMB2_SHAREFLAG_FORCE_SHARED_DELETE 0x0200
253 #define SMB2_SHAREFLAG_ALLOW_NAMESPACE_CACHING 0x0400
254 #define SMB2_SHAREFLAG_ACCESS_BASED_DIRECTORY_ENUM 0x0800
255 #define SMB2_SHAREFLAG_ALL 0x0F33
257 /* SMB2 create security flags */
258 #define SMB2_SECURITY_DYNAMIC_TRACKING 0x01
259 #define SMB2_SECURITY_EFFECTIVE_ONLY 0x02
261 /* SMB2 requested oplock levels */
262 #define SMB2_OPLOCK_LEVEL_NONE 0x00
263 #define SMB2_OPLOCK_LEVEL_II 0x01
264 #define SMB2_OPLOCK_LEVEL_EXCLUSIVE 0x08
265 #define SMB2_OPLOCK_LEVEL_BATCH 0x09
267 /* SMB2 impersonation levels */
268 #define SMB2_IMPERSONATION_ANONYMOUS 0x00
269 #define SMB2_IMPERSONATION_IDENTIFICATION 0x01
270 #define SMB2_IMPERSONATION_IMPERSONATION 0x02
271 #define SMB2_IMPERSONATION_DELEGATE 0x03
273 /* SMB2 create tags */
274 #define SMB2_CREATE_TAG_EXTA "ExtA"
275 #define SMB2_CREATE_TAG_MXAC "MxAc"
276 #define SMB2_CREATE_TAG_SECD "SecD"
277 #define SMB2_CREATE_TAG_DHNQ "DHnQ"
278 #define SMB2_CREATE_TAG_DHNC "DHnC"
279 #define SMB2_CREATE_TAG_ALSI "AlSi"
280 #define SMB2_CREATE_TAG_TWRP "TWrp"
281 #define SMB2_CREATE_TAG_QFID "QFid"
283 /* SMB2 Create ignore some more create_options */
284 #define SMB2_CREATE_OPTIONS_NOT_SUPPORTED_MASK (NTCREATEX_OPTIONS_TREE_CONNECTION | \
285 NTCREATEX_OPTIONS_OPFILTER)
288 check that a body has the expected size
290 #define SMB2_CHECK_PACKET_RECV(req, size, dynamic) do { \
291 size_t is_size = req->in.body_size; \
292 uint16_t field_size = SVAL(req->in.body, 0); \
293 uint16_t want_size = ((dynamic)?(size)+1:(size)); \
294 if (is_size < (size)) { \
295 DEBUG(0,("%s: buffer too small 0x%x. Expected 0x%x\n", \
296 __location__, (unsigned)is_size, (unsigned)want_size)); \
297 return NT_STATUS_BUFFER_TOO_SMALL; \
299 if (field_size != want_size) { \
300 DEBUG(0,("%s: unexpected fixed body size 0x%x. Expected 0x%x\n", \
301 __location__, (unsigned)field_size, (unsigned)want_size)); \
302 return NT_STATUS_INVALID_PARAMETER; \