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/>.
20 /* the context for a single SMB2 request. This is passed to any request-context
22 struct smb2srv_request
{
23 /* the smbsrv_connection needs a list of requests queued for send */
24 struct smb2srv_request
*next
, *prev
;
26 /* the server_context contains all context specific to this SMB socket */
27 struct smbsrv_connection
*smb_conn
;
29 /* conn is only set for operations that have a valid TID */
30 struct smbsrv_tcon
*tcon
;
32 /* the session context is derived from the vuid */
33 struct smbsrv_session
*session
;
35 #define SMB2SRV_REQ_CTRL_FLAG_NOT_REPLY (1<<0)
36 uint32_t control_flags
;
38 /* the system time when the request arrived */
39 struct timeval request_time
;
41 /* a pointer to the per request union smb_* io structure */
44 /* the ntvfs_request */
45 struct ntvfs_request
*ntvfs
;
47 /* Now the SMB2 specific stuff */
49 /* the status the backend returned */
52 /* for matching request and reply */
55 /* the id that can be used to cancel the request */
58 /* the offset to the next SMB2 Header for chained requests */
59 uint32_t chain_offset
;
61 /* the status we return for following chained requests */
62 NTSTATUS chain_status
;
64 /* chained file handle */
65 uint8_t _chained_file_handle
[16];
66 uint8_t *chained_file_handle
;
70 struct smb2_request_buffer in
;
71 struct smb2_request_buffer out
;
74 struct smbsrv_request
;
76 #include "smb_server/smb2/smb2_proto.h"
78 /* useful way of catching field size errors with file and line number */
79 #define SMB2SRV_CHECK_BODY_SIZE(req, size, dynamic) do { \
80 size_t is_size = req->in.body_size; \
81 uint16_t field_size; \
82 uint16_t want_size = ((dynamic)?(size)+1:(size)); \
83 if (is_size < (size)) { \
84 DEBUG(0,("%s: buffer too small 0x%x. Expected 0x%x\n", \
85 __location__, (unsigned)is_size, (unsigned)want_size)); \
86 smb2srv_send_error(req, NT_STATUS_INVALID_PARAMETER); \
89 field_size = SVAL(req->in.body, 0); \
90 if (field_size != want_size) { \
91 DEBUG(0,("%s: unexpected fixed body size 0x%x. Expected 0x%x\n", \
92 __location__, (unsigned)field_size, (unsigned)want_size)); \
93 smb2srv_send_error(req, NT_STATUS_INVALID_PARAMETER); \
98 #define SMB2SRV_CHECK(cmd) do {\
101 if (!NT_STATUS_IS_OK(_status)) { \
102 smb2srv_send_error(req, _status); \
107 /* useful wrapper for talloc with NO_MEMORY reply */
108 #define SMB2SRV_TALLOC_IO_PTR(ptr, type) do { \
109 ptr = talloc(req, type); \
111 smb2srv_send_error(req, NT_STATUS_NO_MEMORY); \
117 #define SMB2SRV_SETUP_NTVFS_REQUEST(send_fn, state) do { \
118 req->ntvfs = ntvfs_request_create(req->tcon->ntvfs, req, \
119 req->session->session_info,\
122 req, send_fn, state); \
124 smb2srv_send_error(req, NT_STATUS_NO_MEMORY); \
127 (void)talloc_steal(req->tcon->ntvfs, req); \
128 req->ntvfs->frontend_data.private_data = req; \
131 #define SMB2SRV_CHECK_FILE_HANDLE(handle) do { \
133 smb2srv_send_error(req, NT_STATUS_FILE_CLOSED); \
139 check if the backend wants to handle the request asynchronously.
140 if it wants it handled synchronously then call the send function
143 #define SMB2SRV_CALL_NTVFS_BACKEND(cmd) do { \
144 req->ntvfs->async_states->status = cmd; \
145 if (req->ntvfs->async_states->state & NTVFS_ASYNC_STATE_ASYNC) { \
147 _status = smb2srv_queue_pending(req); \
148 if (!NT_STATUS_IS_OK(_status)) { \
149 ntvfs_cancel(req->ntvfs); \
152 req->ntvfs->async_states->send_fn(req->ntvfs); \
156 /* check req->ntvfs->async_states->status and if not OK then send an error reply */
157 #define SMB2SRV_CHECK_ASYNC_STATUS_ERR_SIMPLE do { \
158 req = talloc_get_type(ntvfs->async_states->private_data, struct smb2srv_request); \
159 if (ntvfs->async_states->state & NTVFS_ASYNC_STATE_CLOSE || NT_STATUS_EQUAL(ntvfs->async_states->status, NT_STATUS_NET_WRITE_FAULT)) { \
160 smbsrv_terminate_connection(req->smb_conn, get_friendly_nt_error_msg (ntvfs->async_states->status)); \
164 req->status = ntvfs->async_states->status; \
165 if (NT_STATUS_IS_ERR(ntvfs->async_states->status)) { \
166 smb2srv_send_error(req, ntvfs->async_states->status); \
170 #define SMB2SRV_CHECK_ASYNC_STATUS_ERR(ptr, type) do { \
171 SMB2SRV_CHECK_ASYNC_STATUS_ERR_SIMPLE; \
172 ptr = talloc_get_type(req->io_ptr, type); \
174 #define SMB2SRV_CHECK_ASYNC_STATUS_SIMPLE do { \
175 req = talloc_get_type(ntvfs->async_states->private_data, struct smb2srv_request); \
176 if (ntvfs->async_states->state & NTVFS_ASYNC_STATE_CLOSE || NT_STATUS_EQUAL(ntvfs->async_states->status, NT_STATUS_NET_WRITE_FAULT)) { \
177 smbsrv_terminate_connection(req->smb_conn, get_friendly_nt_error_msg (ntvfs->async_states->status)); \
181 req->status = ntvfs->async_states->status; \
182 if (!NT_STATUS_IS_OK(ntvfs->async_states->status)) { \
183 smb2srv_send_error(req, ntvfs->async_states->status); \
187 #define SMB2SRV_CHECK_ASYNC_STATUS(ptr, type) do { \
188 SMB2SRV_CHECK_ASYNC_STATUS_SIMPLE; \
189 ptr = talloc_get_type(req->io_ptr, type); \