1 /*
2 Unix SMB/CIFS implementation.
3 smb2 lib
4 Copyright (C) Volker Lendecke 2011
5
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.
10
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.
15
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/>.
18 */
19
20 #include "includes.h"
21 #include "system/network.h"
22 #include "lib/util/tevent_ntstatus.h"
23 #include "smb_common.h"
24 #include "smbXcli_base.h"
25
26 struct smb2cli_close_state {
27 uint8_t fixed[24];
28 };
29
30 static void smb2cli_close_done(struct tevent_req *subreq);
31
smb2cli_close_send(TALLOC_CTX * mem_ctx,struct tevent_context * ev,struct smbXcli_conn * conn,uint32_t timeout_msec,struct smbXcli_session * session,struct smbXcli_tcon * tcon,uint16_t flags,uint64_t fid_persistent,uint64_t fid_volatile)32 struct tevent_req *smb2cli_close_send(TALLOC_CTX *mem_ctx,
33 struct tevent_context *ev,
34 struct smbXcli_conn *conn,
35 uint32_t timeout_msec,
36 struct smbXcli_session *session,
37 struct smbXcli_tcon *tcon,
38 uint16_t flags,
39 uint64_t fid_persistent,
40 uint64_t fid_volatile)
41 {
42 struct tevent_req *req, *subreq;
43 struct smb2cli_close_state *state;
44 uint8_t *fixed;
45
46 req = tevent_req_create(mem_ctx, &state,
47 struct smb2cli_close_state);
48 if (req == NULL) {
49 return NULL;
50 }
51 fixed = state->fixed;
52 SSVAL(fixed, 0, 24);
53 SSVAL(fixed, 2, flags);
54 SBVAL(fixed, 8, fid_persistent);
55 SBVAL(fixed, 16, fid_volatile);
56
57 subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_CLOSE,
58 0, 0, /* flags */
59 timeout_msec,
60 tcon,
61 session,
62 state->fixed, sizeof(state->fixed),
63 NULL, 0, /* dyn* */
64 0); /* max_dyn_len */
65 if (tevent_req_nomem(subreq, req)) {
66 return tevent_req_post(req, ev);
67 }
68 tevent_req_set_callback(subreq, smb2cli_close_done, req);
69 return req;
70 }
71
smb2cli_close_done(struct tevent_req * subreq)72 static void smb2cli_close_done(struct tevent_req *subreq)
73 {
74 struct tevent_req *req =
75 tevent_req_callback_data(subreq,
76 struct tevent_req);
77 NTSTATUS status;
78 static const struct smb2cli_req_expected_response expected[] = {
79 {
80 .status = NT_STATUS_OK,
81 .body_size = 0x3C
82 }
83 };
84
85 status = smb2cli_req_recv(subreq, NULL, NULL,
86 expected, ARRAY_SIZE(expected));
87 TALLOC_FREE(subreq);
88 if (tevent_req_nterror(req, status)) {
89 return;
90 }
91 tevent_req_done(req);
92 }
93
smb2cli_close_recv(struct tevent_req * req)94 NTSTATUS smb2cli_close_recv(struct tevent_req *req)
95 {
96 return tevent_req_simple_recv_ntstatus(req);
97 }
98
smb2cli_close(struct smbXcli_conn * conn,uint32_t timeout_msec,struct smbXcli_session * session,struct smbXcli_tcon * tcon,uint16_t flags,uint64_t fid_persistent,uint64_t fid_volatile)99 NTSTATUS smb2cli_close(struct smbXcli_conn *conn,
100 uint32_t timeout_msec,
101 struct smbXcli_session *session,
102 struct smbXcli_tcon *tcon,
103 uint16_t flags,
104 uint64_t fid_persistent,
105 uint64_t fid_volatile)
106 {
107 TALLOC_CTX *frame = talloc_stackframe();
108 struct tevent_context *ev;
109 struct tevent_req *req;
110 NTSTATUS status = NT_STATUS_NO_MEMORY;
111
112 if (smbXcli_conn_has_async_calls(conn)) {
113 /*
114 * Can't use sync call while an async call is in flight
115 */
116 status = NT_STATUS_INVALID_PARAMETER;
117 goto fail;
118 }
119 ev = samba_tevent_context_init(frame);
120 if (ev == NULL) {
121 goto fail;
122 }
123 req = smb2cli_close_send(frame, ev, conn, timeout_msec,
124 session, tcon, flags,
125 fid_persistent, fid_volatile);
126 if (req == NULL) {
127 goto fail;
128 }
129 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
130 goto fail;
131 }
132 status = smb2cli_close_recv(req);
133 fail:
134 TALLOC_FREE(frame);
135 return status;
136 }
137