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 #include "libcli/raw/request.h"
29 information returned from the negotiate response
31 struct smb2_negotiate {
35 /* this is the context for the smb2 transport layer */
36 struct smb2_transport {
37 /* socket level info */
38 struct smbcli_socket *socket;
40 struct smb2_options options;
41 struct smb2_negotiate negotiate;
43 /* next seqnum to allocate */
46 /* a list of requests that are pending for receive on this
48 struct smb2_request *pending_recv;
50 /* context of the stream -> packet parser */
51 struct packet_context *packet;
53 /* an idle function - if this is defined then it will be
54 called once every period microseconds while we are waiting
57 void (*func)(struct smb2_transport *, void *);
68 struct smb2_session *session;
76 struct smb2_transport *transport;
77 struct gensec_security *gensec;
79 DATA_BLOB session_key;
83 struct smb2_request_buffer {
84 /* the raw SMB2 buffer, including the 4 byte length header */
87 /* the size of the raw buffer, including 4 byte header */
90 /* how much has been allocated - on reply the buffer is over-allocated to
91 prevent too many realloc() calls
95 /* the start of the SMB2 header - this is always buffer+4 */
103 /* this point to the next dynamic byte that can be used
104 * this will be moved when some dynamic data is pushed
108 /* this is used to range check and align strings and buffers */
109 struct request_bufinfo bufinfo;
114 a client request moves between the following 4 states.
116 enum smb2_request_state {SMB2_REQUEST_INIT, /* we are creating the request */
117 SMB2_REQUEST_RECV, /* we are waiting for a matching reply */
118 SMB2_REQUEST_DONE, /* the request is finished */
119 SMB2_REQUEST_ERROR}; /* a packet or transport level error has occurred */
121 /* the context for a single SMB2 request */
122 struct smb2_request {
123 /* allow a request to be part of a list of requests */
124 struct smb2_request *next, *prev;
126 /* each request is in one of 3 possible states */
127 enum smb2_request_state state;
129 struct smb2_transport *transport;
130 struct smb2_session *session;
131 struct smb2_tree *tree;
141 /* the NT status for this request. Set by packet receive code
142 or code detecting error. */
145 struct smb2_request_buffer in;
146 struct smb2_request_buffer out;
148 /* information on what to do with a reply when it is received
149 asyncronously. If this is not setup when a reply is received then
150 the reply is discarded
152 The private pointer is private to the caller of the client
153 library (the application), not private to the library
156 void (*fn)(struct smb2_request *);
162 #define SMB2_MIN_SIZE 0x42
164 /* offsets into header elements for a sync SMB2 request */
165 #define SMB2_HDR_PROTOCOL_ID 0x00
166 #define SMB2_HDR_LENGTH 0x04
167 #define SMB2_HDR_EPOCH 0x06
168 #define SMB2_HDR_STATUS 0x08
169 #define SMB2_HDR_OPCODE 0x0c
170 #define SMB2_HDR_CREDIT 0x0e
171 #define SMB2_HDR_FLAGS 0x10
172 #define SMB2_HDR_NEXT_COMMAND 0x14
173 #define SMB2_HDR_MESSAGE_ID 0x18
174 #define SMB2_HDR_PID 0x20
175 #define SMB2_HDR_TID 0x24
176 #define SMB2_HDR_SESSION_ID 0x28
177 #define SMB2_HDR_SIGNATURE 0x30 /* 16 bytes */
178 #define SMB2_HDR_BODY 0x40
181 #define SMB2_OP_NEGPROT 0x00
182 #define SMB2_OP_SESSSETUP 0x01
183 #define SMB2_OP_LOGOFF 0x02
184 #define SMB2_OP_TCON 0x03
185 #define SMB2_OP_TDIS 0x04
186 #define SMB2_OP_CREATE 0x05
187 #define SMB2_OP_CLOSE 0x06
188 #define SMB2_OP_FLUSH 0x07
189 #define SMB2_OP_READ 0x08
190 #define SMB2_OP_WRITE 0x09
191 #define SMB2_OP_LOCK 0x0a
192 #define SMB2_OP_IOCTL 0x0b
193 #define SMB2_OP_CANCEL 0x0c
194 #define SMB2_OP_KEEPALIVE 0x0d
195 #define SMB2_OP_FIND 0x0e
196 #define SMB2_OP_NOTIFY 0x0f
197 #define SMB2_OP_GETINFO 0x10
198 #define SMB2_OP_SETINFO 0x11
199 #define SMB2_OP_BREAK 0x12
201 #define SMB2_MAGIC 0x424D53FE /* 0xFE 'S' 'M' 'B' */
203 /* the dialect we support */
204 #define SMB2_DIALECT_REVISION 0x202
206 /* SMB2 negotiate security_mode */
207 #define SMB2_NEGOTIATE_SIGNING_ENABLED 0x01
208 #define SMB2_NEGOTIATE_SIGNING_REQUIRED 0x02
210 /* SMB2 capabilities - only 1 so far. I'm sure more will be added */
211 #define SMB2_CAP_DFS 0x0
212 /* so we can spot new caps as added */
213 #define SMB2_CAP_ALL SMB2_CAP_DFS
215 /* SMB2 share flags */
216 #define SMB2_SHAREFLAG_MANUAL_CACHING 0x0000
217 #define SMB2_SHAREFLAG_AUTO_CACHING 0x0010
218 #define SMB2_SHAREFLAG_VDO_CACHING 0x0020
219 #define SMB2_SHAREFLAG_NO_CACHING 0x0030
220 #define SMB2_SHAREFLAG_DFS 0x0001
221 #define SMB2_SHAREFLAG_DFS_ROOT 0x0002
222 #define SMB2_SHAREFLAG_RESTRICT_EXCLUSIVE_OPENS 0x0100
223 #define SMB2_SHAREFLAG_FORCE_SHARED_DELETE 0x0200
224 #define SMB2_SHAREFLAG_ALLOW_NAMESPACE_CACHING 0x0400
225 #define SMB2_SHAREFLAG_ACCESS_BASED_DIRECTORY_ENUM 0x0800
226 #define SMB2_SHAREFLAG_ALL 0x0F33
228 /* SMB2 create security flags */
229 #define SMB2_SECURITY_DYNAMIC_TRACKING 0x01
230 #define SMB2_SECURITY_EFFECTIVE_ONLY 0x02
232 /* SMB2 requested oplock levels */
233 #define SMB2_OPLOCK_LEVEL_NONE 0x00
234 #define SMB2_OPLOCK_LEVEL_II 0x01
235 #define SMB2_OPLOCK_LEVEL_EXCLUSIVE 0x08
236 #define SMB2_OPLOCK_LEVEL_BATCH 0x09
238 /* SMB2 impersonation levels */
239 #define SMB2_IMPERSONATION_ANONYMOUS 0x00
240 #define SMB2_IMPERSONATION_IDENTIFICATION 0x01
241 #define SMB2_IMPERSONATION_IMPERSONATION 0x02
242 #define SMB2_IMPERSONATION_DELEGATE 0x03
244 /* SMB2 create tags */
245 #define SMB2_CREATE_TAG_EXTA "ExtA"
246 #define SMB2_CREATE_TAG_MXAC "MxAc"
247 #define SMB2_CREATE_TAG_SECD "SecD"
248 #define SMB2_CREATE_TAG_DHNQ "DHnQ"
249 #define SMB2_CREATE_TAG_DHNC "DHnC"
250 #define SMB2_CREATE_TAG_ALSI "AlSi"
251 #define SMB2_CREATE_TAG_TWRP "TWrp"
252 #define SMB2_CREATE_TAG_QFID "QFid"
257 check that a body has the expected size
259 #define SMB2_CHECK_PACKET_RECV(req, size, dynamic) do { \
260 size_t is_size = req->in.body_size; \
261 uint16_t field_size = SVAL(req->in.body, 0); \
262 uint16_t want_size = ((dynamic)?(size)+1:(size)); \
263 if (is_size < (size)) { \
264 DEBUG(0,("%s: buffer too small 0x%x. Expected 0x%x\n", \
265 __location__, (unsigned)is_size, (unsigned)want_size)); \
266 return NT_STATUS_BUFFER_TOO_SMALL; \
268 if (field_size != want_size) { \
269 DEBUG(0,("%s: unexpected fixed body size 0x%x. Expected 0x%x\n", \
270 __location__, (unsigned)field_size, (unsigned)want_size)); \
271 return NT_STATUS_INVALID_PARAMETER; \