2 Unix SMB/CIFS implementation.
4 Copyright (C) Andrew Tridgell 2003
5 Copyright (C) James J Myers 2003 <myersjj@samba.org>
6 Copyright (C) Stefan Metzmacher 2004-2005
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 2 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, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #include "libcli/raw/request.h"
24 #include "libcli/raw/interfaces.h"
25 #include "lib/events/events.h"
26 #include "lib/socket/socket.h"
29 this header declares the core context structures associated with smb
30 sockets, tree connects, requests etc
32 the idea is that we will eventually get rid of all our global
33 variables and instead store our state from structures hanging off
37 struct smbsrv_tcons_context {
38 /* an id tree used to allocate tids */
39 struct idr_context *idtree_tid;
41 /* this is the limit of vuid values for this connection */
42 uint32_t idtree_limit;
44 /* list of open tree connects */
45 struct smbsrv_tcon *list;
48 struct smbsrv_sessions_context {
49 /* an id tree used to allocate vuids */
50 /* this holds info on session vuids that are already
51 * validated for this VC */
52 struct idr_context *idtree_vuid;
54 /* this is the limit of vuid values for this connection */
55 uint64_t idtree_limit;
57 /* also kept as a link list so it can be enumerated by
58 the management code */
59 struct smbsrv_session *list;
62 struct smbsrv_handles_context {
63 /* an id tree used to allocate file handles */
64 struct idr_context *idtree_hid;
66 /* this is the limit of handle values for this context */
67 uint64_t idtree_limit;
69 /* also kept as a link list so it can be enumerated by
70 the management code */
71 struct smbsrv_handle *list;
74 /* the current user context for a request */
75 struct smbsrv_session {
76 struct smbsrv_session *prev, *next;
78 struct smbsrv_connection *smb_conn;
81 * in SMB2 tcons belong to just one session
82 * and not to the whole connection
84 struct smbsrv_tcons_context smb2_tcons;
87 * the open file handles for this session,
88 * used for SMBexit, SMBulogoff and SMB2 SessionLogoff
90 struct smbsrv_handle_session_item *handles;
93 * an index passed over the wire:
99 struct gensec_security *gensec_ctx;
101 struct auth_session_info *session_info;
103 /* some statistics for the management tools */
105 /* the time when the session setup started */
106 struct timeval connect_time;
107 /* the time when the session setup was finished */
108 struct timeval auth_time;
109 /* the time when the last request comes in */
110 struct timeval last_request_time;
114 /* we need a forward declaration of the ntvfs_ops strucutre to prevent
116 struct ntvfs_context;
119 struct smbsrv_tcon *next, *prev;
121 /* the server context that this was created on */
122 struct smbsrv_connection *smb_conn;
124 /* the open file handles on this tcon */
125 struct smbsrv_handles_context handles;
128 * an index passed over the wire:
132 uint32_t tid; /* an index passed over the wire (the TID) */
135 const char *share_name;
137 /* the NTVFS context - see source/ntvfs/ for details */
138 struct ntvfs_context *ntvfs;
140 /* some stuff to support share level security */
142 /* in share level security we need to fake up a session */
143 struct smbsrv_session *session;
146 /* some stuff to support share level security */
148 /* in SMB2 a tcon always belongs to one session */
149 struct smbsrv_session *session;
152 /* some statistics for the management tools */
154 /* the time when the tree connect started */
155 struct timeval connect_time;
156 /* the time when the last request comes in */
157 struct timeval last_request_time;
161 struct smbsrv_handle {
162 struct smbsrv_handle *next, *prev;
164 /* the tcon the handle belongs to */
165 struct smbsrv_tcon *tcon;
167 /* the session the handle was opened on */
168 struct smbsrv_session *session;
170 /* the smbpid used on the open, used for SMBexit */
174 * this is for adding the handle into a linked list
175 * on the smbsrv_session, we can't use *next,*prev
176 * for this because they're used for the linked list on the
179 struct smbsrv_handle_session_item {
180 struct smbsrv_handle_session_item *prev, *next;
181 struct smbsrv_handle *handle;
185 * the value passed over the wire
188 * Note: for SMB2 handles are 128 bit
189 * we'll fill the 2nd 64 bit with:
191 * - 32 bit 0xFFFFFFFF
196 * the ntvfs handle passed to the ntvfs backend
198 struct ntvfs_handle *ntvfs;
200 /* some statistics for the management tools */
202 /* the time when the tree connect started */
203 struct timeval open_time;
204 /* the time when the last request comes in */
205 struct timeval last_use_time;
209 /* a set of flags to control handling of request structures */
210 #define SMBSRV_REQ_CONTROL_LARGE (1<<1) /* allow replies larger than max_xmit */
212 /* the context for a single SMB request. This is passed to any request-context
214 struct smbsrv_request {
215 /* the smbsrv_connection needs a list of requests queued for send */
216 struct smbsrv_request *next, *prev;
218 /* the server_context contains all context specific to this SMB socket */
219 struct smbsrv_connection *smb_conn;
221 /* conn is only set for operations that have a valid TID */
222 struct smbsrv_tcon *tcon;
224 /* the session context is derived from the vuid */
225 struct smbsrv_session *session;
227 /* a set of flags to control usage of the request. See SMBSRV_REQ_CONTROL_* */
228 uint32_t control_flags;
230 /* the system time when the request arrived */
231 struct timeval request_time;
233 /* a pointer to the per request union smb_* io structure */
236 /* the ntvfs_request */
237 struct ntvfs_request *ntvfs;
239 /* Now the SMB specific stuff */
241 /* the flags from the SMB request, in raw form (host byte order) */
244 /* this can contain a fnum from an earlier part of a chained
245 * message (such as an SMBOpenX), or -1 */
248 /* how far through the chain of SMB commands have we gone? */
249 unsigned chain_count;
251 /* the sequence number for signing */
254 struct request_buffer in;
255 struct request_buffer out;
258 /* this contains variables that should be used in % substitutions for
259 * smb.conf parameters */
260 struct substitute_context {
263 /* our local netbios name, as give to us by the client */
266 /* the remote netbios name, as give to us by the client */
267 char *remote_machine;
269 /* the select remote protocol */
272 /* the name of the client as should be displayed in
273 * smbstatus. Can be an IP or a netbios name */
276 /* the username for %U */
280 /* Remote architectures we know about. */
281 enum remote_arch_types {RA_UNKNOWN, RA_WFWG, RA_OS2, RA_WIN95, RA_WINNT, RA_WIN2K, RA_WINXP, RA_SAMBA};
283 enum security_types {SEC_SHARE,SEC_USER};
285 /* smb server context structure. This should contain all the state
286 * information associated with a SMB server connection
288 struct smbsrv_connection {
289 /* context that has been negotiated between the client and server */
291 /* have we already done the NBT session establishment? */
292 BOOL done_nbt_session;
294 /* only one negprot per connection is allowed */
297 /* multiple session setups are allowed, but some parameters are
298 ignored in any but the first */
302 * Size of data we can send to client. Set
303 * by the client for all protocols above CORE.
304 * Set by us for CORE protocol.
306 unsigned max_send; /* init to BUFFER_SIZE */
309 * Size of the data we can receive. Set by us.
310 * Can be modified by the max xmit parameter.
312 unsigned max_recv; /* init to BUFFER_SIZE */
314 /* a guess at the remote architecture. Try not to rely on this - in almost
315 all cases using these values is the wrong thing to do */
316 enum remote_arch_types ra_type;
318 /* the negotiatiated protocol */
319 enum protocol_types protocol;
321 /* authentication context for multi-part negprot */
322 struct auth_context *auth_context;
324 /* reference to the kerberos keytab, or machine trust account */
325 struct cli_credentials *server_credentials;
327 /* did we tell the client we support encrypted passwords? */
328 BOOL encrypted_passwords;
330 /* Did we choose SPNEGO, or perhaps raw NTLMSSP, or even no extended security at all? */
333 /* client capabilities */
334 uint32_t client_caps;
336 /* the timezone we sent to the client */
339 /* NBT names only set when done_nbt_session is true */
340 struct nbt_name *called_name;
341 struct nbt_name *calling_name;
344 /* the context associated with open tree connects on a smb socket, not for SMB2 */
345 struct smbsrv_tcons_context smb_tcons;
347 /* context associated with currently valid session setups */
348 struct smbsrv_sessions_context sessions;
350 /* the server_context holds a linked list of pending requests,
351 * this is used for blocking locks and requests blocked due to oplock
353 struct _smbsrv_pending_request {
354 struct _smbsrv_pending_request *next, *prev;
356 /* the request itself - needs to be freed */
357 struct smbsrv_request *request;
360 struct smb_signing_context signing;
362 struct stream_connection *connection;
364 /* this holds a partially received request */
365 struct packet_context *packet;
367 /* a list of partially received transaction requests */
368 struct smbsrv_trans_partial {
369 struct smbsrv_trans_partial *next, *prev;
370 struct smbsrv_request *req;
371 struct smb_trans2 *trans;
375 /* configuration parameters */
377 enum security_types security;
378 BOOL nt_status_support;
381 /* some statictics for the management tools */
383 /* the time when the client connects */
384 struct timeval connect_time;
385 /* the time when the last request comes in */
386 struct timeval last_request_time;
390 #include "smb_server/smb_server_proto.h"
391 #include "smb_server/smb/smb_proto.h"
393 /* useful way of catching wct errors with file and line number */
394 #define SMBSRV_CHECK_WCT(req, wcount) do { \
395 if ((req)->in.wct != (wcount)) { \
396 DEBUG(1,("Unexpected WCT %d at %s(%d) - expected %d\n", \
397 (req)->in.wct, __FILE__, __LINE__, wcount)); \
398 smbsrv_send_error(req, NT_STATUS_DOS(ERRSRV, ERRerror)); \
403 /* useful wrapper for talloc with NO_MEMORY reply */
404 #define SMBSRV_TALLOC_IO_PTR(ptr, type) do { \
405 ptr = talloc(req, type); \
407 smbsrv_send_error(req, NT_STATUS_NO_MEMORY); \
413 #define SMBSRV_SETUP_NTVFS_REQUEST(send_fn, state) do { \
414 req->ntvfs = ntvfs_request_create(req->tcon->ntvfs, req, \
415 req->session->session_info,\
416 SVAL(req->in.hdr,HDR_PID), \
417 SVAL(req->in.hdr,HDR_MID), \
419 req, send_fn, state); \
421 smbsrv_send_error(req, NT_STATUS_NO_MEMORY); \
424 (void)talloc_steal(req->tcon->ntvfs, req); \
425 req->ntvfs->frontend_data.private_data = req; \
428 #define SMBSRV_CHECK_FILE_HANDLE(handle) do { \
430 smbsrv_send_error(req, NT_STATUS_INVALID_HANDLE); \
435 #define SMBSRV_CHECK_FILE_HANDLE_ERROR(handle, _status) do { \
437 smbsrv_send_error(req, _status); \
442 #define SMBSRV_CHECK_FILE_HANDLE_NTSTATUS(handle) do { \
444 return NT_STATUS_INVALID_HANDLE; \
449 check if the backend wants to handle the request asynchronously.
450 if it wants it handled synchronously then call the send function
453 #define SMBSRV_CALL_NTVFS_BACKEND(cmd) do { \
454 req->ntvfs->async_states->status = cmd; \
455 if (!(req->ntvfs->async_states->state & NTVFS_ASYNC_STATE_ASYNC)) { \
456 req->ntvfs->async_states->send_fn(req->ntvfs); \
460 /* check req->ntvfs->async_states->status and if not OK then send an error reply */
461 #define SMBSRV_CHECK_ASYNC_STATUS_ERR_SIMPLE do { \
462 req = talloc_get_type(ntvfs->async_states->private_data, struct smbsrv_request); \
463 if (NT_STATUS_IS_ERR(ntvfs->async_states->status)) { \
464 smbsrv_send_error(req, ntvfs->async_states->status); \
468 #define SMBSRV_CHECK_ASYNC_STATUS_ERR(ptr, type) do { \
469 SMBSRV_CHECK_ASYNC_STATUS_ERR_SIMPLE; \
470 ptr = talloc_get_type(req->io_ptr, type); \
472 #define SMBSRV_CHECK_ASYNC_STATUS_SIMPLE do { \
473 req = talloc_get_type(ntvfs->async_states->private_data, struct smbsrv_request); \
474 if (!NT_STATUS_IS_OK(ntvfs->async_states->status)) { \
475 smbsrv_send_error(req, ntvfs->async_states->status); \
479 #define SMBSRV_CHECK_ASYNC_STATUS(ptr, type) do { \
480 SMBSRV_CHECK_ASYNC_STATUS_SIMPLE; \
481 ptr = talloc_get_type(req->io_ptr, type); \
484 /* zero out some reserved fields in a reply */
485 #define SMBSRV_VWV_RESERVED(start, count) memset(req->out.vwv + VWV(start), 0, (count)*2)