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                                 DATA_BLOB *outbody);
  29
  30 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req)
  31 {
  32         const uint8_t *inhdr;
  33         const uint8_t *inbody;
  34         int i = req->current_idx;
  35         uint8_t *outhdr;
  36         DATA_BLOB outbody;
  37         size_t expected_body_size = 0x18;
  38         size_t body_size;
  39         uint16_t in_flags;
  40         uint64_t in_file_id_persistent;
  41         uint64_t in_file_id_volatile;
  42         NTSTATUS status;
  43
  44         inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
  45         if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
  46                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  47         }
  48
  49         inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
  50
  51         body_size = SVAL(inbody, 0x00);
  52         if (body_size != expected_body_size) {
  53                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  54         }
  55
  56         outbody = data_blob_talloc(req->out.vector, NULL, 0x3C);
  57         if (outbody.data == NULL) {
  58                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
  59         }
  60
  61         in_flags                = SVAL(inbody, 0x02);
  62         in_file_id_persistent   = BVAL(inbody, 0x08);
  63         in_file_id_volatile     = BVAL(inbody, 0x10);
  64
  65         if (req->compat_chain_fsp) {
  66                 /* skip check */
  67         } else if (in_file_id_persistent != in_file_id_volatile) {
  68                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
  69         }
  70
  71         status = smbd_smb2_close(req,
  72                                 in_flags,
  73                                 in_file_id_volatile,
  74                                 &outbody);
  75         if (!NT_STATUS_IS_OK(status)) {
  76                 return smbd_smb2_request_error(req, status);
  77         }
  78
  79         outhdr = (uint8_t *)req->out.vector[i].iov_base;
  80         return smbd_smb2_request_done(req, outbody, NULL);
  81 }
  82
  83 static NTSTATUS smbd_smb2_close(struct smbd_smb2_request *req,
  84                                 uint16_t in_flags,
  85                                 uint64_t in_file_id_volatile,
  86                                 DATA_BLOB *outbody)
  87 {
  88         NTSTATUS status;
  89         struct smb_request *smbreq;
  90         connection_struct *conn = req->tcon->compat_conn;
  91         files_struct *fsp;
  92         struct smb_filename *smb_fname = NULL;
  93         struct timespec mdate_ts, adate_ts, cdate_ts, create_date_ts;
  94         uint64_t allocation_size = 0;
  95         uint64_t file_size = 0;
  96         uint32_t dos_attrs = 0;
  97         uint16_t out_flags = 0;
  98         bool posix_open = false;
  99
 100         ZERO_STRUCT(create_date_ts);
 101         ZERO_STRUCT(adate_ts);
 102         ZERO_STRUCT(mdate_ts);
 103         ZERO_STRUCT(cdate_ts);
 104
 105         DEBUG(10,("smbd_smb2_close: file_id[0x%016llX]\n",
 106                   (unsigned long long)in_file_id_volatile));
 107
 108         smbreq = smbd_smb2_fake_smb_request(req);
 109         if (smbreq == NULL) {
 110                 return NT_STATUS_NO_MEMORY;
 111         }
 112
 113         fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
 114         if (fsp == NULL) {
 115                 return NT_STATUS_FILE_CLOSED;
 116         }
 117         if (conn != fsp->conn) {
 118                 return NT_STATUS_FILE_CLOSED;
 119         }
 120         if (req->session->vuid != fsp->vuid) {
 121                 return NT_STATUS_FILE_CLOSED;
 122         }
 123
 124         posix_open = fsp->posix_open;
 125         status = copy_smb_filename(talloc_tos(),
 126                                 fsp->fsp_name,
 127                                 &smb_fname);
 128         if (!NT_STATUS_IS_OK(status)) {
 129                 return status;
 130         }
 131
 132         status = close_file(smbreq, fsp, NORMAL_CLOSE);
 133         if (!NT_STATUS_IS_OK(status)) {
 134                 DEBUG(5,("smbd_smb2_close: close_file[%s]: %s\n",
 135                          fsp_str_dbg(fsp), nt_errstr(status)));
 136                 return status;
 137         }
 138
 139         if (in_flags & SMB2_CLOSE_FLAGS_FULL_INFORMATION) {
 140                 int ret;
 141                 if (posix_open) {
 142                         ret = SMB_VFS_LSTAT(conn, smb_fname);
 143                 } else {
 144                         ret = SMB_VFS_STAT(conn, smb_fname);
 145                 }
 146                 if (ret == 0) {
 147                         out_flags = SMB2_CLOSE_FLAGS_FULL_INFORMATION;
 148                         dos_attrs = dos_mode(conn, smb_fname);
 149                         mdate_ts = smb_fname->st.st_ex_mtime;
 150                         adate_ts = smb_fname->st.st_ex_atime;
 151                         create_date_ts = get_create_timespec(conn, NULL, smb_fname);
 152                         cdate_ts = get_change_timespec(conn, NULL, smb_fname);
 153
 154                         if (lp_dos_filetime_resolution(SNUM(conn))) {
 155                                 dos_filetime_timespec(&create_date_ts);
 156                                 dos_filetime_timespec(&mdate_ts);
 157                                 dos_filetime_timespec(&adate_ts);
 158                                 dos_filetime_timespec(&cdate_ts);
 159                         }
 160                         if (!(dos_attrs & FILE_ATTRIBUTE_DIRECTORY)) {
 161                                 file_size = get_file_size_stat(&smb_fname->st);
 162                         }
 163
 164                         allocation_size = SMB_VFS_GET_ALLOC_SIZE(conn, NULL, &smb_fname->st);
 165                 }
 166         }
 167
 168         SSVAL(outbody->data, 0x00, 0x3C);       /* struct size */
 169         SSVAL(outbody->data, 0x02, out_flags);  /* flags */
 170         SIVAL(outbody->data, 0x04, 0);          /* reserved */
 171         put_long_date_timespec(conn->ts_res,
 172                 (char *)&outbody->data[0x8],create_date_ts); /* creation time */
 173         put_long_date_timespec(conn->ts_res,
 174                 (char *)&outbody->data[0x10],adate_ts); /* last access time */
 175         put_long_date_timespec(conn->ts_res,
 176                 (char *)&outbody->data[0x18],mdate_ts); /* last write time */
 177         put_long_date_timespec(conn->ts_res,
 178                 (char *)&outbody->data[0x20],cdate_ts); /* change time */
 179         SBVAL(outbody->data, 0x28, allocation_size);/* allocation size */
 180         SBVAL(outbody->data, 0x30, file_size);  /* end of file */
 181         SIVAL(outbody->data, 0x38, dos_attrs);  /* file attributes */
 182
 183         return NT_STATUS_OK;
 184 }