source3/smbd/smb2_close.c

   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
  25 static NTSTATUS smbd_smb2_close(struct smbd_smb2_request *req,
  26                                 uint16_t in_flags,
  27                                 uint64_t in_file_id_volatile);
  28
  29 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req)
  30 {
  31         const uint8_t *inhdr;
  32         const uint8_t *inbody;
  33         int i = req->current_idx;
  34         uint8_t *outhdr;
  35         DATA_BLOB outbody;
  36         size_t expected_body_size = 0x18;
  37         size_t body_size;
  38         uint16_t in_flags;
  39         uint64_t in_file_id_persistent;
  40         uint64_t in_file_id_volatile;
  41         NTSTATUS status;
  42
  43         inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
  44         if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
  45                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  46         }
  47
  48         inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
  49
  50         body_size = SVAL(inbody, 0x00);
  51         if (body_size != expected_body_size) {
  52                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  53         }
  54
  55         in_flags                = SVAL(inbody, 0x02);
  56         in_file_id_persistent   = BVAL(inbody, 0x08);
  57         in_file_id_volatile     = BVAL(inbody, 0x10);
  58
  59         if (req->compat_chain_fsp) {
  60                 /* skip check */
  61         } else if (in_file_id_persistent != in_file_id_volatile) {
  62                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
  63         }
  64
  65         status = smbd_smb2_close(req,
  66                                 in_flags,
  67                                 in_file_id_volatile);
  68         if (!NT_STATUS_IS_OK(status)) {
  69                 return smbd_smb2_request_error(req, status);
  70         }
  71
  72         outhdr = (uint8_t *)req->out.vector[i].iov_base;
  73
  74         outbody = data_blob_talloc(req->out.vector, NULL, 0x3C);
  75         if (outbody.data == NULL) {
  76                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
  77         }
  78
  79         SSVAL(outbody.data, 0x00, 0x3C);        /* struct size */
  80         SSVAL(outbody.data, 0x02, 0);           /* flags */
  81         SIVAL(outbody.data, 0x04, 0);           /* reserved */
  82         SBVAL(outbody.data, 0x08, 0);           /* creation time */
  83         SBVAL(outbody.data, 0x10, 0);           /* last access time */
  84         SBVAL(outbody.data, 0x18, 0);           /* last write time */
  85         SBVAL(outbody.data, 0x20, 0);           /* change time */
  86         SBVAL(outbody.data, 0x28, 0);           /* allocation size */
  87         SBVAL(outbody.data, 0x30, 0);           /* end of size */
  88         SIVAL(outbody.data, 0x38, 0);           /* file attributes */
  89
  90         return smbd_smb2_request_done(req, outbody, NULL);
  91 }
  92
  93 static NTSTATUS smbd_smb2_close(struct smbd_smb2_request *req,
  94                                 uint16_t in_flags,
  95                                 uint64_t in_file_id_volatile)
  96 {
  97         NTSTATUS status;
  98         struct smb_request *smbreq;
  99         connection_struct *conn = req->tcon->compat_conn;
 100         files_struct *fsp;
 101
 102         DEBUG(10,("smbd_smb2_close: file_id[0x%016llX]\n",
 103                   (unsigned long long)in_file_id_volatile));
 104
 105         smbreq = smbd_smb2_fake_smb_request(req);
 106         if (smbreq == NULL) {
 107                 return NT_STATUS_NO_MEMORY;
 108         }
 109
 110         fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
 111         if (fsp == NULL) {
 112                 return NT_STATUS_FILE_CLOSED;
 113         }
 114         if (conn != fsp->conn) {
 115                 return NT_STATUS_FILE_CLOSED;
 116         }
 117         if (req->session->vuid != fsp->vuid) {
 118                 return NT_STATUS_FILE_CLOSED;
 119         }
 120
 121         status = close_file(smbreq, fsp, NORMAL_CLOSE);
 122         if (!NT_STATUS_IS_OK(status)) {
 123                 DEBUG(5,("smbd_smb2_close: close_file[%s]: %s\n",
 124                          fsp_str_dbg(fsp), nt_errstr(status)));
 125                 return status;
 126         }
 127
 128         return NT_STATUS_OK;
 129 }