2 Unix SMB2 implementation.
4 Copyright (C) Andrew Tridgell 2005
5 Copyright (C) Stefan Metzmacher 2005
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #include "system/time.h"
24 #include "libcli/smb2/smb2.h"
25 #include "libcli/smb2/smb2_calls.h"
26 #include "smb_server/smb_server.h"
27 #include "smb_server/smb2/smb2_server.h"
28 #include "lib/stream/packet.h"
31 static struct smb2srv_request *smb2srv_init_request(struct smbsrv_connection *smb_conn)
33 struct smb2srv_request *req;
35 req = talloc_zero(smb_conn, struct smb2srv_request);
36 if (!req) return NULL;
38 req->smb_conn = smb_conn;
43 NTSTATUS smb2srv_setup_reply(struct smb2srv_request *req, uint_t body_fixed_size, uint_t body_dynamic_size)
45 req->out.size = SMB2_HDR_BODY+NBT_HDR_SIZE+body_fixed_size;
47 req->out.allocated = req->out.size + body_dynamic_size;
48 req->out.buffer = talloc_size(req, req->out.allocated);
49 NT_STATUS_HAVE_NO_MEMORY(req->out.buffer);
51 req->out.hdr = req->out.buffer + NBT_HDR_SIZE;
52 req->out.body = req->out.hdr + SMB2_HDR_BODY;
53 req->out.body_size = body_fixed_size;
54 req->out.dynamic = (body_dynamic_size ? req->out.body + body_fixed_size : NULL);
56 SIVAL(req->out.hdr, 0, SMB2_MAGIC);
57 SSVAL(req->out.hdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
58 SSVAL(req->out.hdr, SMB2_HDR_PAD1, 0);
59 SIVAL(req->out.hdr, SMB2_HDR_STATUS, NT_STATUS_V(req->status));
60 SSVAL(req->out.hdr, SMB2_HDR_OPCODE, SVAL(req->in.hdr, SMB2_HDR_OPCODE));
61 SSVAL(req->out.hdr, SMB2_HDR_PAD2, 0);
62 SIVAL(req->out.hdr, SMB2_HDR_FLAGS, 0x00000001);
63 SIVAL(req->out.hdr, SMB2_HDR_UNKNOWN, 0);
64 SBVAL(req->out.hdr, SMB2_HDR_SEQNUM, req->seqnum);
65 SIVAL(req->out.hdr, SMB2_HDR_PID, IVAL(req->in.hdr, SMB2_HDR_PID));
66 SIVAL(req->out.hdr, SMB2_HDR_TID, IVAL(req->in.hdr, SMB2_HDR_TID));
67 SBVAL(req->out.hdr, SMB2_HDR_UID, BVAL(req->in.hdr, SMB2_HDR_UID));
68 memset(req->out.hdr+SMB2_HDR_SIG, 0, 16);
70 /* set the length of the fixed body part and +1 if there's a dynamic part also */
71 SSVAL(req->out.body, 0, body_fixed_size + (body_dynamic_size?1:0));
74 * if we have a dynamic part, make sure the first byte
75 * which is always be part of the packet is initialized
77 if (body_dynamic_size) {
78 SCVAL(req->out.dynamic, 0, 0);
84 void smb2srv_send_reply(struct smb2srv_request *req)
89 if (req->out.size > NBT_HDR_SIZE) {
90 _smb2_setlen(req->out.buffer, req->out.size - NBT_HDR_SIZE);
93 blob = data_blob_const(req->out.buffer, req->out.size);
94 status = packet_send(req->smb_conn->packet, blob);
95 if (!NT_STATUS_IS_OK(status)) {
96 smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
101 void smb2srv_send_error(struct smb2srv_request *req, NTSTATUS error)
105 status = smb2srv_setup_reply(req, 8, 1);
106 if (!NT_STATUS_IS_OK(status)) {
107 smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
112 SIVAL(req->out.hdr, SMB2_HDR_STATUS, NT_STATUS_V(error));
114 SSVAL(req->out.body, 0x02, 0);
115 SIVAL(req->out.body, 0x04, 0);
117 smb2srv_send_reply(req);
120 static NTSTATUS smb2srv_reply(struct smb2srv_request *req)
126 opcode = SVAL(req->in.hdr, SMB2_HDR_OPCODE);
127 req->seqnum = BVAL(req->in.hdr, SMB2_HDR_SEQNUM);
128 tid = IVAL(req->in.hdr, SMB2_HDR_TID);
129 uid = BVAL(req->in.hdr, SMB2_HDR_UID);
131 req->session = smbsrv_session_find(req->smb_conn, uid);
132 req->tcon = smbsrv_smb2_tcon_find(req->session, tid);
136 /* TODO: check the seqnum */
139 case SMB2_OP_NEGPROT:
140 smb2srv_negprot_recv(req);
142 case SMB2_OP_SESSSETUP:
143 smb2srv_sesssetup_recv(req);
146 if (!req->session) goto nosession;
147 smb2srv_logoff_recv(req);
150 if (!req->session) goto nosession;
151 smb2srv_tcon_recv(req);
154 if (!req->session) goto nosession;
155 if (!req->tcon) goto notcon;
156 smb2srv_tdis_recv(req);
159 if (!req->session) goto nosession;
160 if (!req->tcon) goto notcon;
161 smb2srv_create_recv(req);
164 if (!req->session) goto nosession;
165 if (!req->tcon) goto notcon;
166 smb2srv_close_recv(req);
169 if (!req->session) goto nosession;
170 if (!req->tcon) goto notcon;
171 smb2srv_flush_recv(req);
174 if (!req->session) goto nosession;
175 if (!req->tcon) goto notcon;
176 smb2srv_read_recv(req);
179 if (!req->session) goto nosession;
180 if (!req->tcon) goto notcon;
181 smb2srv_write_recv(req);
184 if (!req->session) goto nosession;
185 if (!req->tcon) goto notcon;
186 smb2srv_lock_recv(req);
189 if (!req->session) goto nosession;
190 if (!req->tcon) goto notcon;
191 smb2srv_ioctl_recv(req);
194 if (!req->session) goto nosession;
195 if (!req->tcon) goto notcon;
196 smb2srv_cancel_recv(req);
198 case SMB2_OP_KEEPALIVE:
199 smb2srv_keepalive_recv(req);
202 if (!req->session) goto nosession;
203 if (!req->tcon) goto notcon;
204 smb2srv_find_recv(req);
207 if (!req->session) goto nosession;
208 if (!req->tcon) goto notcon;
209 smb2srv_notify_recv(req);
211 case SMB2_OP_GETINFO:
212 if (!req->session) goto nosession;
213 if (!req->tcon) goto notcon;
214 smb2srv_getinfo_recv(req);
216 case SMB2_OP_SETINFO:
217 if (!req->session) goto nosession;
218 if (!req->tcon) goto notcon;
219 smb2srv_setinfo_recv(req);
222 if (!req->session) goto nosession;
223 if (!req->tcon) goto notcon;
224 smb2srv_break_recv(req);
228 DEBUG(1,("Invalid SMB2 opcode: 0x%04X\n", opcode));
229 smbsrv_terminate_connection(req->smb_conn, "Invalid SMB2 opcode");
233 smb2srv_send_error(req, NT_STATUS_USER_SESSION_DELETED);
236 smb2srv_send_error(req, NT_STATUS_NETWORK_NAME_DELETED);
240 NTSTATUS smbsrv_recv_smb2_request(void *private, DATA_BLOB blob)
242 struct smbsrv_connection *smb_conn = talloc_get_type(private, struct smbsrv_connection);
243 struct smb2srv_request *req;
244 uint32_t protocol_version;
245 uint16_t buffer_code;
246 uint32_t dynamic_size;
248 /* see if its a special NBT packet */
249 if (CVAL(blob.data,0) != 0) {
250 DEBUG(2,("Special NBT packet on SMB2 connection"));
251 smbsrv_terminate_connection(smb_conn, "Special NBT packet on SMB2 connection");
255 if (blob.length < (NBT_HDR_SIZE + SMB2_MIN_SIZE)) {
256 DEBUG(2,("Invalid SMB2 packet length count %ld\n", (long)blob.length));
257 smbsrv_terminate_connection(smb_conn, "Invalid SMB2 packet");
261 protocol_version = IVAL(blob.data, NBT_HDR_SIZE);
263 if (protocol_version != SMB2_MAGIC) {
264 DEBUG(2,("Invalid SMB packet: protocl prefix: 0x%08X\n", protocol_version));
265 smbsrv_terminate_connection(smb_conn, "NON-SMB2 packet");
269 req = smb2srv_init_request(smb_conn);
270 NT_STATUS_HAVE_NO_MEMORY(req);
272 req->in.buffer = talloc_steal(req, blob.data);
273 req->in.size = blob.length;
274 req->request_time = timeval_current();
275 req->in.allocated = req->in.size;
277 req->in.hdr = req->in.buffer+ NBT_HDR_SIZE;
278 req->in.body = req->in.hdr + SMB2_HDR_BODY;
279 req->in.body_size = req->in.size - (SMB2_HDR_BODY+NBT_HDR_SIZE);
280 req->in.dynamic = NULL;
282 buffer_code = SVAL(req->in.body, 0);
283 dynamic_size = req->in.body_size - (buffer_code & ~1);
285 if (dynamic_size != 0 && (buffer_code & 1)) {
286 req->in.dynamic = req->in.body + (buffer_code & ~1);
287 if (smb2_oob(&req->in, req->in.dynamic, dynamic_size)) {
288 DEBUG(1,("SMB2 request invalid dynamic size 0x%x\n",
290 smb2srv_send_error(req, NT_STATUS_INVALID_PARAMETER);
296 * TODO: - make sure the length field is 64
297 * - make sure it's a request
300 return smb2srv_reply(req);
304 * init the SMB2 protocol related stuff
306 NTSTATUS smbsrv_init_smb2_connection(struct smbsrv_connection *smb_conn)
310 /* now initialise a few default values associated with this smb socket */
311 smb_conn->negotiate.max_send = 0xFFFF;
313 /* this is the size that w2k uses, and it appears to be important for
315 smb_conn->negotiate.max_recv = lp_max_xmit();
317 smb_conn->negotiate.zone_offset = get_time_zone(time(NULL));
319 smb_conn->config.security = SEC_USER;
320 smb_conn->config.nt_status_support = True;
322 status = smbsrv_init_sessions(smb_conn, UINT64_MAX);
323 NT_STATUS_NOT_OK_RETURN(status);