source: vendor/3.5.8/source3/smbd/smb2_close.c

/*
   Unix SMB/CIFS implementation.
   Core SMB2 server

   Copyright (C) Stefan Metzmacher 2009

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "includes.h"
#include "smbd/globals.h"
#include "../libcli/smb/smb_common.h"

static NTSTATUS smbd_smb2_close(struct smbd_smb2_request *req,
                                uint16_t in_flags,
                                uint64_t in_file_id_volatile);

NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req)
{
        const uint8_t *inhdr;
        const uint8_t *inbody;
        int i = req->current_idx;
        uint8_t *outhdr;
        DATA_BLOB outbody;
        size_t expected_body_size = 0x18;
        size_t body_size;
        uint16_t in_flags;
        uint64_t in_file_id_persistent;
        uint64_t in_file_id_volatile;
        NTSTATUS status;

        inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
        if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
                return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
        }

        inbody = (const uint8_t *)req->in.vector[i+1].iov_base;

        body_size = SVAL(inbody, 0x00);
        if (body_size != expected_body_size) {
                return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
        }

        in_flags                = SVAL(inbody, 0x02);
        in_file_id_persistent   = BVAL(inbody, 0x08);
        in_file_id_volatile     = BVAL(inbody, 0x10);

        if (req->compat_chain_fsp) {
                /* skip check */
        } else if (in_file_id_persistent != 0) {
                return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
        }

        status = smbd_smb2_close(req,
                                in_flags,
                                in_file_id_volatile);
        if (!NT_STATUS_IS_OK(status)) {
                return smbd_smb2_request_error(req, status);
        }

        outhdr = (uint8_t *)req->out.vector[i].iov_base;

        outbody = data_blob_talloc(req->out.vector, NULL, 0x3C);
        if (outbody.data == NULL) {
                return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
        }

        SSVAL(outbody.data, 0x00, 0x3C);        /* struct size */
        SSVAL(outbody.data, 0x02, 0);           /* flags */
        SIVAL(outbody.data, 0x04, 0);           /* reserved */
        SBVAL(outbody.data, 0x08, 0);           /* creation time */
        SBVAL(outbody.data, 0x10, 0);           /* last access time */
        SBVAL(outbody.data, 0x18, 0);           /* last write time */
        SBVAL(outbody.data, 0x20, 0);           /* change time */
        SBVAL(outbody.data, 0x28, 0);           /* allocation size */
        SBVAL(outbody.data, 0x30, 0);           /* end of size */
        SIVAL(outbody.data, 0x38, 0);           /* file attributes */

        return smbd_smb2_request_done(req, outbody, NULL);
}

static NTSTATUS smbd_smb2_close(struct smbd_smb2_request *req,
                                uint16_t in_flags,
                                uint64_t in_file_id_volatile)
{
        NTSTATUS status;
        struct smb_request *smbreq;
        connection_struct *conn = req->tcon->compat_conn;
        files_struct *fsp;

        DEBUG(10,("smbd_smb2_close: file_id[0x%016llX]\n",
                  (unsigned long long)in_file_id_volatile));

        smbreq = smbd_smb2_fake_smb_request(req);
        if (smbreq == NULL) {
                return NT_STATUS_NO_MEMORY;
        }

        fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
        if (fsp == NULL) {
                return NT_STATUS_FILE_CLOSED;
        }
        if (conn != fsp->conn) {
                return NT_STATUS_FILE_CLOSED;
        }
        if (req->session->vuid != fsp->vuid) {
                return NT_STATUS_FILE_CLOSED;
        }

        status = close_file(smbreq, fsp, NORMAL_CLOSE);
        if (!NT_STATUS_IS_OK(status)) {
                DEBUG(5,("smbd_smb2_close: close_file[%s]: %s\n",
                         fsp_str_dbg(fsp), nt_errstr(status)));
                return status;
        }

        return NT_STATUS_OK;
}