2 Unix SMB2 implementation.
4 Copyright (C) Stefan Metzmacher 2005
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 "libcli/smb2/smb2.h"
22 #include "libcli/smb2/smb2_calls.h"
23 #include "smb_server/smb_server.h"
24 #include "smb_server/service_smb_proto.h"
25 #include "smb_server/smb2/smb2_server.h"
26 #include "librpc/gen_ndr/security.h"
27 #include "smbd/service_stream.h"
28 #include "ntvfs/ntvfs.h"
29 #include "param/param.h"
32 send an oplock break request to a client
34 static NTSTATUS smb2srv_send_oplock_break(void *p, struct ntvfs_handle *h, uint8_t level)
36 struct smbsrv_handle *handle = talloc_get_type(h->frontend_data.private_data,
37 struct smbsrv_handle);
38 struct smb2srv_request *req;
41 /* setup a dummy request structure */
42 req = smb2srv_init_request(handle->tcon->smb_conn);
43 NT_STATUS_HAVE_NO_MEMORY(req);
45 req->in.buffer = talloc_array(req, uint8_t,
46 NBT_HDR_SIZE + SMB2_MIN_SIZE);
47 NT_STATUS_HAVE_NO_MEMORY(req->in.buffer);
48 req->in.size = NBT_HDR_SIZE + SMB2_MIN_SIZE;
49 req->in.allocated = req->in.size;
51 req->in.hdr = req->in.buffer+ NBT_HDR_SIZE;
52 req->in.body = req->in.hdr + SMB2_HDR_BODY;
53 req->in.body_size = req->in.size - (SMB2_HDR_BODY+NBT_HDR_SIZE);
54 req->in.dynamic = NULL;
56 req->seqnum = UINT64_MAX;
58 SIVAL(req->in.hdr, 0, SMB2_MAGIC);
59 SSVAL(req->in.hdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
60 SSVAL(req->in.hdr, SMB2_HDR_PAD1, 0);
61 SIVAL(req->in.hdr, SMB2_HDR_STATUS, 0);
62 SSVAL(req->in.hdr, SMB2_HDR_OPCODE, SMB2_OP_BREAK);
63 SSVAL(req->in.hdr, SMB2_HDR_UNKNOWN1, 0);
64 SIVAL(req->in.hdr, SMB2_HDR_FLAGS, 0);
65 SIVAL(req->in.hdr, SMB2_HDR_CHAIN_OFFSET, 0);
66 SBVAL(req->in.hdr, SMB2_HDR_SEQNUM, 0);
67 SIVAL(req->in.hdr, SMB2_HDR_PID, 0);
68 SIVAL(req->in.hdr, SMB2_HDR_TID, 0);
69 SBVAL(req->in.hdr, SMB2_HDR_UID, 0);
70 memset(req->in.hdr+SMB2_HDR_SIG, 0, 16);
72 SSVAL(req->in.body, 0, 2);
74 status = smb2srv_setup_reply(req, 0x18, false, 0);
75 NT_STATUS_NOT_OK_RETURN(status);
77 SSVAL(req->out.hdr, SMB2_HDR_UNKNOWN1, 0x0000);
79 SSVAL(req->out.body, 0x02, 0x0001);
80 SIVAL(req->out.body, 0x04, 0x00000000);
81 smb2srv_push_handle(req->out.body, 0x08, h);
83 smb2srv_send_reply(req);
88 struct ntvfs_handle *smb2srv_pull_handle(struct smb2srv_request *req, const uint8_t *base, uint_t offset)
90 struct smbsrv_tcon *tcon;
91 struct smbsrv_handle *handle;
97 * if there're chained requests used the cached handle
99 * TODO: check if this also correct when the given handle
102 if (req->chained_file_handle) {
103 base = req->chained_file_handle;
107 hid = IVAL(base, offset);
108 tid = IVAL(base, offset + 4);
109 uid = BVAL(base, offset + 8);
111 /* if it's the wildcard handle, don't waste time to search it... */
112 if (hid == UINT32_MAX && tid == UINT32_MAX && uid == UINT64_MAX) {
117 * if the (v)uid part doesn't match the given session the handle isn't
120 if (uid != req->session->vuid) {
125 * the handle can belong to a different tcon
126 * as that TID in the SMB2 header says, but
127 * the request should succeed nevertheless!
129 * because of this we put the 32 bit TID into the
130 * 128 bit handle, so that we can extract the tcon from the
134 if (tid != req->tcon->tid) {
135 tcon = smbsrv_smb2_tcon_find(req->session, tid, req->request_time);
141 handle = smbsrv_smb2_handle_find(tcon, hid, req->request_time);
147 * as the smb2srv_tcon is a child object of the smb2srv_session
148 * the handle belongs to the correct session!
150 * Note: no check is needed here for SMB2
154 * as the handle may have overwritten the tcon
155 * we need to set it on the request so that the
156 * correct ntvfs context will be used for the ntvfs_*() request
158 * TODO: check if that's correct for chained requests as well!
161 return handle->ntvfs;
164 void smb2srv_push_handle(uint8_t *base, uint_t offset, struct ntvfs_handle *ntvfs)
166 struct smbsrv_handle *handle = talloc_get_type(ntvfs->frontend_data.private_data,
167 struct smbsrv_handle);
170 * the handle is 128 bit on the wire
172 SIVAL(base, offset, handle->hid);
173 SIVAL(base, offset + 4, handle->tcon->tid);
174 SBVAL(base, offset + 8, handle->session->vuid);
177 static NTSTATUS smb2srv_handle_create_new(void *private_data, struct ntvfs_request *ntvfs, struct ntvfs_handle **_h)
179 struct smb2srv_request *req = talloc_get_type(ntvfs->frontend_data.private_data,
180 struct smb2srv_request);
181 struct smbsrv_handle *handle;
182 struct ntvfs_handle *h;
184 handle = smbsrv_handle_new(req->session, req->tcon, req, req->request_time);
185 if (!handle) return NT_STATUS_INSUFFICIENT_RESOURCES;
187 h = talloc_zero(handle, struct ntvfs_handle);
191 * note: we don't set handle->ntvfs yet,
192 * this will be done by smbsrv_handle_make_valid()
193 * this makes sure the handle is invalid for clients
194 * until the ntvfs subsystem has made it valid
197 h->session_info = ntvfs->session_info;
198 h->smbpid = ntvfs->smbpid;
200 h->frontend_data.private_data = handle;
206 return NT_STATUS_NO_MEMORY;
209 static NTSTATUS smb2srv_handle_make_valid(void *private_data, struct ntvfs_handle *h)
211 struct smbsrv_tcon *tcon = talloc_get_type(private_data, struct smbsrv_tcon);
212 struct smbsrv_handle *handle = talloc_get_type(h->frontend_data.private_data,
213 struct smbsrv_handle);
214 /* this tells the frontend that the handle is valid */
216 /* this moves the smbsrv_request to the smbsrv_tcon memory context */
217 talloc_steal(tcon, handle);
221 static void smb2srv_handle_destroy(void *private_data, struct ntvfs_handle *h)
223 struct smbsrv_handle *handle = talloc_get_type(h->frontend_data.private_data,
224 struct smbsrv_handle);
228 static struct ntvfs_handle *smb2srv_handle_search_by_wire_key(void *private_data, struct ntvfs_request *ntvfs, const DATA_BLOB *key)
233 static DATA_BLOB smb2srv_handle_get_wire_key(void *private_data, struct ntvfs_handle *handle, TALLOC_CTX *mem_ctx)
235 return data_blob(NULL, 0);
238 static NTSTATUS smb2srv_tcon_backend(struct smb2srv_request *req, union smb_tcon *io)
240 struct smbsrv_tcon *tcon;
242 enum ntvfs_type type;
245 const char *service = io->smb2.in.path;
246 struct share_config *scfg;
247 const char *sharetype;
249 if (strncmp(service, "\\\\", 2) == 0) {
250 const char *p = strchr(service+2, '\\');
256 status = share_get_config(req, req->smb_conn->share_context, service, &scfg);
257 if (!NT_STATUS_IS_OK(status)) {
258 DEBUG(0,("smb2srv_tcon_backend: couldn't find service %s\n", service));
259 return NT_STATUS_BAD_NETWORK_NAME;
262 if (!socket_check_access(req->smb_conn->connection->socket,
264 share_string_list_option(req, scfg, SHARE_HOSTS_ALLOW),
265 share_string_list_option(req, scfg, SHARE_HOSTS_DENY))) {
266 return NT_STATUS_ACCESS_DENIED;
269 /* work out what sort of connection this is */
270 sharetype = share_string_option(scfg, SHARE_TYPE, "DISK");
271 if (sharetype && strcmp(sharetype, "IPC") == 0) {
274 unknown2 = 0x00000030;
275 } else if (sharetype && strcmp(sharetype, "PRINTER") == 0) {
278 unknown2 = 0x00000000;
282 unknown2 = 0x00000800;
285 tcon = smbsrv_smb2_tcon_new(req->session, scfg->name);
287 DEBUG(0,("smb2srv_tcon_backend: Couldn't find free connection.\n"));
288 return NT_STATUS_INSUFFICIENT_RESOURCES;
292 /* init ntvfs function pointers */
293 status = ntvfs_init_connection(tcon, scfg, type,
294 req->smb_conn->negotiate.protocol,
295 req->smb_conn->connection->event.ctx,
296 req->smb_conn->connection->msg_ctx,
298 req->smb_conn->connection->server_id,
300 if (!NT_STATUS_IS_OK(status)) {
301 DEBUG(0, ("smb2srv_tcon_backend: ntvfs_init_connection failed for service %s\n",
306 status = ntvfs_set_oplock_handler(tcon->ntvfs, smb2srv_send_oplock_break, tcon);
307 if (!NT_STATUS_IS_OK(status)) {
308 DEBUG(0,("smb2srv_tcon_backend: NTVFS failed to set the oplock handler!\n"));
312 status = ntvfs_set_addr_callbacks(tcon->ntvfs, smbsrv_get_my_addr, smbsrv_get_peer_addr, req->smb_conn);
313 if (!NT_STATUS_IS_OK(status)) {
314 DEBUG(0,("smb2srv_tcon_backend: NTVFS failed to set the addr callbacks!\n"));
318 status = ntvfs_set_handle_callbacks(tcon->ntvfs,
319 smb2srv_handle_create_new,
320 smb2srv_handle_make_valid,
321 smb2srv_handle_destroy,
322 smb2srv_handle_search_by_wire_key,
323 smb2srv_handle_get_wire_key,
325 if (!NT_STATUS_IS_OK(status)) {
326 DEBUG(0,("smb2srv_tcon_backend: NTVFS failed to set the handle callbacks!\n"));
330 req->ntvfs = ntvfs_request_create(req->tcon->ntvfs, req,
331 req->session->session_info,
332 0, /* TODO: fill in PID */
336 status = NT_STATUS_NO_MEMORY;
340 /* Invoke NTVFS connection hook */
341 status = ntvfs_connect(req->ntvfs, scfg->name);
342 if (!NT_STATUS_IS_OK(status)) {
343 DEBUG(0,("smb2srv_tcon_backend: NTVFS ntvfs_connect() failed!\n"));
347 io->smb2.out.unknown1 = type_smb2; /* 1 - DISK, 2 - Print, 3 - IPC */
348 io->smb2.out.unknown2 = unknown2;
349 io->smb2.out.unknown3 = 0x00000000;
350 io->smb2.out.access_mask= SEC_RIGHTS_FILE_ALL;
352 io->smb2.out.tid = tcon->tid;
362 static void smb2srv_tcon_send(struct smb2srv_request *req, union smb_tcon *io)
366 if (!NT_STATUS_IS_OK(req->status)) {
367 smb2srv_send_error(req, req->status);
370 if (io->smb2.out.unknown1 == 0x0002) {
371 /* if it's an IPC share vista returns 0x0005 */
377 SMB2SRV_CHECK(smb2srv_setup_reply(req, 0x10, false, 0));
379 SIVAL(req->out.hdr, SMB2_HDR_TID, io->smb2.out.tid);
380 SSVAL(req->out.hdr, SMB2_HDR_UNKNOWN1,unknown1);
382 SSVAL(req->out.body, 0x02, io->smb2.out.unknown1);
383 SIVAL(req->out.body, 0x04, io->smb2.out.unknown2);
384 SIVAL(req->out.body, 0x08, io->smb2.out.unknown3);
385 SIVAL(req->out.body, 0x0C, io->smb2.out.access_mask);
387 smb2srv_send_reply(req);
390 void smb2srv_tcon_recv(struct smb2srv_request *req)
394 SMB2SRV_CHECK_BODY_SIZE(req, 0x08, true);
395 SMB2SRV_TALLOC_IO_PTR(io, union smb_tcon);
397 io->smb2.level = RAW_TCON_SMB2;
398 io->smb2.in.unknown1 = SVAL(req->in.body, 0x02);
399 SMB2SRV_CHECK(smb2_pull_o16s16_string(&req->in, io, req->in.body+0x04, &io->smb2.in.path));
401 req->status = smb2srv_tcon_backend(req, io);
403 if (req->control_flags & SMB2SRV_REQ_CTRL_FLAG_NOT_REPLY) {
407 smb2srv_tcon_send(req, io);
410 static NTSTATUS smb2srv_tdis_backend(struct smb2srv_request *req)
412 /* TODO: call ntvfs backends to close file of this tcon */
413 talloc_free(req->tcon);
418 static void smb2srv_tdis_send(struct smb2srv_request *req)
422 if (NT_STATUS_IS_ERR(req->status)) {
423 smb2srv_send_error(req, req->status);
427 status = smb2srv_setup_reply(req, 0x04, false, 0);
428 if (!NT_STATUS_IS_OK(status)) {
429 smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
434 SSVAL(req->out.body, 0x02, 0);
436 smb2srv_send_reply(req);
439 void smb2srv_tdis_recv(struct smb2srv_request *req)
443 SMB2SRV_CHECK_BODY_SIZE(req, 0x04, false);
445 _pad = SVAL(req->in.body, 0x02);
447 req->status = smb2srv_tdis_backend(req);
449 if (req->control_flags & SMB2SRV_REQ_CTRL_FLAG_NOT_REPLY) {
453 smb2srv_tdis_send(req);