source: vendor/3.5.0/source3/smbd/smb2_break.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 6.1 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 Core SMB2 server
4
5 Copyright (C) Stefan Metzmacher 2009
6
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 3 of the License, or
10 (at your option) any later version.
11
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.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
19*/
20
21#include "includes.h"
22#include "smbd/globals.h"
23#include "../libcli/smb/smb_common.h"
24
25static struct tevent_req *smbd_smb2_oplock_break_send(TALLOC_CTX *mem_ctx,
26 struct tevent_context *ev,
27 struct smbd_smb2_request *smb2req,
28 uint8_t in_oplock_level,
29 uint64_t in_file_id_volatile);
30static NTSTATUS smbd_smb2_oplock_break_recv(struct tevent_req *req,
31 uint8_t *out_oplock_level);
32
33static void smbd_smb2_request_oplock_break_done(struct tevent_req *subreq);
34NTSTATUS smbd_smb2_request_process_break(struct smbd_smb2_request *req)
35{
36 const uint8_t *inhdr;
37 const uint8_t *inbody;
38 int i = req->current_idx;
39 size_t expected_body_size = 0x18;
40 size_t body_size;
41 uint8_t in_oplock_level;
42 uint64_t in_file_id_persistent;
43 uint64_t in_file_id_volatile;
44 struct tevent_req *subreq;
45
46 inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
47 if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
48 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
49 }
50
51 inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
52
53 body_size = SVAL(inbody, 0x00);
54 if (body_size != expected_body_size) {
55 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
56 }
57
58 in_oplock_level = CVAL(inbody, 0x02);
59 /* 0x03 1 bytes reserved */
60 /* 0x04 4 bytes reserved */
61 in_file_id_persistent = BVAL(inbody, 0x08);
62 in_file_id_volatile = BVAL(inbody, 0x10);
63
64 if (req->compat_chain_fsp) {
65 /* skip check */
66 } else if (in_file_id_persistent != 0) {
67 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
68 }
69
70 subreq = smbd_smb2_oplock_break_send(req,
71 req->sconn->smb2.event_ctx,
72 req,
73 in_oplock_level,
74 in_file_id_volatile);
75 if (subreq == NULL) {
76 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
77 }
78 tevent_req_set_callback(subreq, smbd_smb2_request_oplock_break_done, req);
79
80 return smbd_smb2_request_pending_queue(req, subreq);
81}
82
83static void smbd_smb2_request_oplock_break_done(struct tevent_req *subreq)
84{
85 struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
86 struct smbd_smb2_request);
87 const uint8_t *inbody;
88 int i = req->current_idx;
89 uint64_t in_file_id_persistent;
90 uint64_t in_file_id_volatile;
91 uint8_t out_oplock_level = 0;
92 DATA_BLOB outbody;
93 NTSTATUS status;
94 NTSTATUS error; /* transport error */
95
96 status = smbd_smb2_oplock_break_recv(subreq, &out_oplock_level);
97 TALLOC_FREE(subreq);
98 if (!NT_STATUS_IS_OK(status)) {
99 error = smbd_smb2_request_error(req, status);
100 if (!NT_STATUS_IS_OK(error)) {
101 smbd_server_connection_terminate(req->sconn,
102 nt_errstr(error));
103 return;
104 }
105 return;
106 }
107
108 inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
109
110 in_file_id_persistent = BVAL(inbody, 0x08);
111 in_file_id_volatile = BVAL(inbody, 0x10);
112
113 outbody = data_blob_talloc(req->out.vector, NULL, 0x18);
114 if (outbody.data == NULL) {
115 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
116 if (!NT_STATUS_IS_OK(error)) {
117 smbd_server_connection_terminate(req->sconn,
118 nt_errstr(error));
119 return;
120 }
121 return;
122 }
123
124 SSVAL(outbody.data, 0x00, 0x18); /* struct size */
125 SCVAL(outbody.data, 0x02,
126 out_oplock_level); /* oplock level */
127 SCVAL(outbody.data, 0x03, 0); /* reserved */
128 SIVAL(outbody.data, 0x04, 0); /* reserved */
129 SBVAL(outbody.data, 0x08,
130 in_file_id_persistent); /* file id (persistent) */
131 SBVAL(outbody.data, 0x10,
132 in_file_id_volatile); /* file id (volatile) */
133
134 error = smbd_smb2_request_done(req, outbody, NULL);
135 if (!NT_STATUS_IS_OK(error)) {
136 smbd_server_connection_terminate(req->sconn,
137 nt_errstr(error));
138 return;
139 }
140}
141
142struct smbd_smb2_oplock_break_state {
143 struct smbd_smb2_request *smb2req;
144 uint8_t out_oplock_level;
145};
146
147static struct tevent_req *smbd_smb2_oplock_break_send(TALLOC_CTX *mem_ctx,
148 struct tevent_context *ev,
149 struct smbd_smb2_request *smb2req,
150 uint8_t in_oplock_level,
151 uint64_t in_file_id_volatile)
152{
153 struct tevent_req *req;
154 struct smbd_smb2_oplock_break_state *state;
155 struct smb_request *smbreq;
156 connection_struct *conn = smb2req->tcon->compat_conn;
157 files_struct *fsp;
158
159 req = tevent_req_create(mem_ctx, &state,
160 struct smbd_smb2_oplock_break_state);
161 if (req == NULL) {
162 return NULL;
163 }
164 state->smb2req = smb2req;
165 state->out_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
166
167 DEBUG(10,("smbd_smb2_oplock_break_send: file_id[0x%016llX]\n",
168 (unsigned long long)in_file_id_volatile));
169
170 smbreq = smbd_smb2_fake_smb_request(smb2req);
171 if (tevent_req_nomem(smbreq, req)) {
172 return tevent_req_post(req, ev);
173 }
174
175 fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
176 if (fsp == NULL) {
177 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
178 return tevent_req_post(req, ev);
179 }
180 if (conn != fsp->conn) {
181 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
182 return tevent_req_post(req, ev);
183 }
184 if (smb2req->session->vuid != fsp->vuid) {
185 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
186 return tevent_req_post(req, ev);
187 }
188
189 tevent_req_nterror(req, NT_STATUS_NOT_IMPLEMENTED);
190 return tevent_req_post(req, ev);
191}
192
193static NTSTATUS smbd_smb2_oplock_break_recv(struct tevent_req *req,
194 uint8_t *out_oplock_level)
195{
196 NTSTATUS status;
197 struct smbd_smb2_oplock_break_state *state =
198 tevent_req_data(req,
199 struct smbd_smb2_oplock_break_state);
200
201 if (tevent_req_is_nterror(req, &status)) {
202 tevent_req_received(req);
203 return status;
204 }
205
206 *out_oplock_level = state->out_oplock_level;
207
208 tevent_req_received(req);
209 return NT_STATUS_OK;
210}
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