| 1 | /*
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| 2 | Unix SMB/CIFS implementation.
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| 3 | Core SMB2 server
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| 4 |
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| 5 | Copyright (C) Stefan Metzmacher 2009
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| 6 |
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| 7 | This program is free software; you can redistribute it and/or modify
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| 8 | it under the terms of the GNU General Public License as published by
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| 9 | the Free Software Foundation; either version 3 of the License, or
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| 10 | (at your option) any later version.
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| 11 |
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| 12 | This program is distributed in the hope that it will be useful,
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| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | GNU General Public License for more details.
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| 16 |
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| 17 | You should have received a copy of the GNU General Public License
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| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 |
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| 21 | #include "includes.h"
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| 22 | #include "smbd/globals.h"
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| 23 | #include "../libcli/smb/smb_common.h"
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| 24 |
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| 25 | static NTSTATUS smbd_smb2_close(struct smbd_smb2_request *req,
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| 26 | uint16_t in_flags,
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| 27 | uint64_t in_file_id_volatile);
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| 28 |
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| 29 | NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req)
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| 30 | {
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| 31 | const uint8_t *inhdr;
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| 32 | const uint8_t *inbody;
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| 33 | int i = req->current_idx;
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| 34 | uint8_t *outhdr;
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| 35 | DATA_BLOB outbody;
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| 36 | size_t expected_body_size = 0x18;
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| 37 | size_t body_size;
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| 38 | uint16_t in_flags;
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| 39 | uint64_t in_file_id_persistent;
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| 40 | uint64_t in_file_id_volatile;
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| 41 | NTSTATUS status;
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| 42 |
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| 43 | inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
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| 44 | if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
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| 45 | return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
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| 46 | }
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| 47 |
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| 48 | inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
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| 49 |
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| 50 | body_size = SVAL(inbody, 0x00);
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| 51 | if (body_size != expected_body_size) {
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| 52 | return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
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| 53 | }
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| 54 |
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| 55 | in_flags = SVAL(inbody, 0x02);
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| 56 | in_file_id_persistent = BVAL(inbody, 0x08);
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| 57 | in_file_id_volatile = BVAL(inbody, 0x10);
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| 58 |
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| 59 | if (req->compat_chain_fsp) {
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| 60 | /* skip check */
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| 61 | } else if (in_file_id_persistent != 0) {
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| 62 | return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
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| 63 | }
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| 64 |
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| 65 | status = smbd_smb2_close(req,
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| 66 | in_flags,
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| 67 | in_file_id_volatile);
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| 68 | if (!NT_STATUS_IS_OK(status)) {
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| 69 | return smbd_smb2_request_error(req, status);
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| 70 | }
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| 71 |
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| 72 | outhdr = (uint8_t *)req->out.vector[i].iov_base;
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| 73 |
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| 74 | outbody = data_blob_talloc(req->out.vector, NULL, 0x3C);
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| 75 | if (outbody.data == NULL) {
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| 76 | return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
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| 77 | }
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| 78 |
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| 79 | SSVAL(outbody.data, 0x00, 0x3C); /* struct size */
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| 80 | SSVAL(outbody.data, 0x02, 0); /* flags */
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| 81 | SIVAL(outbody.data, 0x04, 0); /* reserved */
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| 82 | SBVAL(outbody.data, 0x08, 0); /* creation time */
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| 83 | SBVAL(outbody.data, 0x10, 0); /* last access time */
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| 84 | SBVAL(outbody.data, 0x18, 0); /* last write time */
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| 85 | SBVAL(outbody.data, 0x20, 0); /* change time */
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| 86 | SBVAL(outbody.data, 0x28, 0); /* allocation size */
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| 87 | SBVAL(outbody.data, 0x30, 0); /* end of size */
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| 88 | SIVAL(outbody.data, 0x38, 0); /* file attributes */
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| 89 |
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| 90 | return smbd_smb2_request_done(req, outbody, NULL);
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| 91 | }
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| 92 |
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| 93 | static NTSTATUS smbd_smb2_close(struct smbd_smb2_request *req,
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| 94 | uint16_t in_flags,
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| 95 | uint64_t in_file_id_volatile)
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| 96 | {
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| 97 | NTSTATUS status;
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| 98 | struct smb_request *smbreq;
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| 99 | connection_struct *conn = req->tcon->compat_conn;
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| 100 | files_struct *fsp;
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| 101 |
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| 102 | DEBUG(10,("smbd_smb2_close: file_id[0x%016llX]\n",
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| 103 | (unsigned long long)in_file_id_volatile));
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| 104 |
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| 105 | smbreq = smbd_smb2_fake_smb_request(req);
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| 106 | if (smbreq == NULL) {
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| 107 | return NT_STATUS_NO_MEMORY;
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| 108 | }
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| 109 |
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| 110 | fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
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| 111 | if (fsp == NULL) {
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| 112 | return NT_STATUS_FILE_CLOSED;
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| 113 | }
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| 114 | if (conn != fsp->conn) {
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| 115 | return NT_STATUS_FILE_CLOSED;
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| 116 | }
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| 117 | if (req->session->vuid != fsp->vuid) {
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| 118 | return NT_STATUS_FILE_CLOSED;
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| 119 | }
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| 120 |
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| 121 | status = close_file(smbreq, fsp, NORMAL_CLOSE);
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| 122 | if (!NT_STATUS_IS_OK(status)) {
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| 123 | DEBUG(5,("smbd_smb2_close: close_file[%s]: %s\n",
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| 124 | fsp_str_dbg(fsp), nt_errstr(status)));
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| 125 | return status;
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| 126 | }
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| 127 |
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| 128 | return NT_STATUS_OK;
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| 129 | }
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