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/smbd.h"
  23 #include "smbd/globals.h"
  24 #include "../libcli/smb/smb_common.h"
  25 #include "../lib/util/tevent_ntstatus.h"
  26
  27 static struct tevent_req *smbd_smb2_close_send(TALLOC_CTX *mem_ctx,
  28                                                struct tevent_context *ev,
  29                                                struct smbd_smb2_request *smb2req,
  30                                                uint16_t in_flags,
  31                                                uint64_t in_file_id_volatile);
  32 static NTSTATUS smbd_smb2_close_recv(struct tevent_req *req,
  33                                      uint16_t *out_flags,
  34                                      NTTIME *out_creation_time,
  35                                      NTTIME *out_last_access_time,
  36                                      NTTIME *out_last_write_time,
  37                                      NTTIME *out_change_time,
  38                                      uint64_t *out_allocation_size,
  39                                      uint64_t *out_end_of_file,
  40                                      uint32_t *out_file_attributes);
  41
  42 static void smbd_smb2_request_close_done(struct tevent_req *subreq);
  43
  44 NTSTATUS smbd_smb2_request_process_close(struct smbd_smb2_request *req)
  45 {
  46         const uint8_t *inbody;
  47         int i = req->current_idx;
  48         uint16_t in_flags;
  49         uint64_t in_file_id_persistent;
  50         uint64_t in_file_id_volatile;
  51         NTSTATUS status;
  52         struct tevent_req *subreq;
  53
  54         status = smbd_smb2_request_verify_sizes(req, 0x18);
  55         if (!NT_STATUS_IS_OK(status)) {
  56                 return smbd_smb2_request_error(req, status);
  57         }
  58         inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
  59
  60         in_flags                = SVAL(inbody, 0x02);
  61         in_file_id_persistent   = BVAL(inbody, 0x08);
  62         in_file_id_volatile     = BVAL(inbody, 0x10);
  63
  64         if (req->compat_chain_fsp) {
  65                 /* skip check */
  66         } else if (in_file_id_persistent != in_file_id_volatile) {
  67                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
  68         }
  69
  70         subreq = smbd_smb2_close_send(req,
  71                                       req->sconn->ev_ctx,
  72                                       req,
  73                                       in_flags,
  74                                       in_file_id_volatile);
  75         if (subreq == NULL) {
  76                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
  77         }
  78         tevent_req_set_callback(subreq, smbd_smb2_request_close_done, req);
  79
  80         return smbd_smb2_request_pending_queue(req, subreq, 500);
  81 }
  82
  83 static void smbd_smb2_request_close_done(struct tevent_req *subreq)
  84 {
  85         struct smbd_smb2_request *req =
  86                 tevent_req_callback_data(subreq,
  87                 struct smbd_smb2_request);
  88         DATA_BLOB outbody;
  89         uint16_t out_flags;
  90         NTTIME out_creation_time;
  91         NTTIME out_last_access_time;
  92         NTTIME out_last_write_time;
  93         NTTIME out_change_time;
  94         uint64_t out_allocation_size;
  95         uint64_t out_end_of_file;
  96         uint32_t out_file_attributes;
  97         NTSTATUS status;
  98         NTSTATUS error;
  99
 100         status = smbd_smb2_close_recv(subreq,
 101                                       &out_flags,
 102                                       &out_creation_time,
 103                                       &out_last_access_time,
 104                                       &out_last_write_time,
 105                                       &out_change_time,
 106                                       &out_allocation_size,
 107                                       &out_end_of_file,
 108                                       &out_file_attributes);
 109         if (!NT_STATUS_IS_OK(status)) {
 110                 error = smbd_smb2_request_error(req, status);
 111                 if (!NT_STATUS_IS_OK(error)) {
 112                         smbd_server_connection_terminate(req->sconn,
 113                                                          nt_errstr(error));
 114                         return;
 115                 }
 116                 return;
 117         }
 118
 119         outbody = data_blob_talloc(req->out.vector, NULL, 0x3C);
 120         if (outbody.data == NULL) {
 121                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 122                 if (!NT_STATUS_IS_OK(error)) {
 123                         smbd_server_connection_terminate(req->sconn,
 124                                                          nt_errstr(error));
 125                         return;
 126                 }
 127                 return;
 128         }
 129
 130         SSVAL(outbody.data, 0x00, 0x3C);        /* struct size */
 131         SSVAL(outbody.data, 0x02, out_flags);
 132         SIVAL(outbody.data, 0x04, 0);           /* reserved */
 133         SBVAL(outbody.data, 0x08, out_creation_time);
 134         SBVAL(outbody.data, 0x10, out_last_access_time);
 135         SBVAL(outbody.data, 0x18, out_last_write_time);
 136         SBVAL(outbody.data, 0x20, out_change_time);
 137         SBVAL(outbody.data, 0x28, out_allocation_size);
 138         SBVAL(outbody.data, 0x30, out_end_of_file);
 139         SIVAL(outbody.data, 0x38, out_file_attributes);
 140
 141         error = smbd_smb2_request_done(req, outbody, NULL);
 142         if (!NT_STATUS_IS_OK(error)) {
 143                 smbd_server_connection_terminate(req->sconn,
 144                                                  nt_errstr(error));
 145                 return;
 146         }
 147 }
 148
 149 static NTSTATUS smbd_smb2_close(struct smbd_smb2_request *req,
 150                                 uint16_t in_flags,
 151                                 uint64_t in_file_id_volatile,
 152                                 uint16_t *out_flags,
 153                                 NTTIME *out_creation_time,
 154                                 NTTIME *out_last_access_time,
 155                                 NTTIME *out_last_write_time,
 156                                 NTTIME *out_change_time,
 157                                 uint64_t *out_allocation_size,
 158                                 uint64_t *out_end_of_file,
 159                                 uint32_t *out_file_attributes)
 160 {
 161         NTSTATUS status;
 162         struct smb_request *smbreq;
 163         connection_struct *conn = req->tcon->compat_conn;
 164         files_struct *fsp;
 165         struct smb_filename *smb_fname = NULL;
 166         struct timespec mdate_ts, adate_ts, cdate_ts, create_date_ts;
 167         uint64_t allocation_size = 0;
 168         uint64_t file_size = 0;
 169         uint32_t dos_attrs = 0;
 170         uint16_t flags = 0;
 171         bool posix_open = false;
 172
 173         ZERO_STRUCT(create_date_ts);
 174         ZERO_STRUCT(adate_ts);
 175         ZERO_STRUCT(mdate_ts);
 176         ZERO_STRUCT(cdate_ts);
 177
 178         *out_flags = 0;
 179         *out_creation_time = 0;
 180         *out_last_access_time = 0;
 181         *out_last_write_time = 0;
 182         *out_change_time = 0;
 183         *out_allocation_size = 0;
 184         *out_end_of_file = 0;
 185         *out_file_attributes = 0;
 186
 187         DEBUG(10,("smbd_smb2_close: file_id[0x%016llX]\n",
 188                   (unsigned long long)in_file_id_volatile));
 189
 190         smbreq = smbd_smb2_fake_smb_request(req);
 191         if (smbreq == NULL) {
 192                 return NT_STATUS_NO_MEMORY;
 193         }
 194
 195         fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
 196         if (fsp == NULL) {
 197                 return NT_STATUS_FILE_CLOSED;
 198         }
 199         if (conn != fsp->conn) {
 200                 return NT_STATUS_FILE_CLOSED;
 201         }
 202         if (req->session->vuid != fsp->vuid) {
 203                 return NT_STATUS_FILE_CLOSED;
 204         }
 205
 206         posix_open = fsp->posix_open;
 207         status = copy_smb_filename(talloc_tos(),
 208                                 fsp->fsp_name,
 209                                 &smb_fname);
 210         if (!NT_STATUS_IS_OK(status)) {
 211                 return status;
 212         }
 213
 214         status = close_file(smbreq, fsp, NORMAL_CLOSE);
 215         if (!NT_STATUS_IS_OK(status)) {
 216                 DEBUG(5,("smbd_smb2_close: close_file[%s]: %s\n",
 217                          fsp_str_dbg(fsp), nt_errstr(status)));
 218                 return status;
 219         }
 220
 221         if (in_flags & SMB2_CLOSE_FLAGS_FULL_INFORMATION) {
 222                 int ret;
 223                 if (posix_open) {
 224                         ret = SMB_VFS_LSTAT(conn, smb_fname);
 225                 } else {
 226                         ret = SMB_VFS_STAT(conn, smb_fname);
 227                 }
 228                 if (ret == 0) {
 229                         flags = SMB2_CLOSE_FLAGS_FULL_INFORMATION;
 230                         dos_attrs = dos_mode(conn, smb_fname);
 231                         mdate_ts = smb_fname->st.st_ex_mtime;
 232                         adate_ts = smb_fname->st.st_ex_atime;
 233                         create_date_ts = get_create_timespec(conn, NULL, smb_fname);
 234                         cdate_ts = get_change_timespec(conn, NULL, smb_fname);
 235
 236                         if (lp_dos_filetime_resolution(SNUM(conn))) {
 237                                 dos_filetime_timespec(&create_date_ts);
 238                                 dos_filetime_timespec(&mdate_ts);
 239                                 dos_filetime_timespec(&adate_ts);
 240                                 dos_filetime_timespec(&cdate_ts);
 241                         }
 242                         if (!(dos_attrs & FILE_ATTRIBUTE_DIRECTORY)) {
 243                                 file_size = get_file_size_stat(&smb_fname->st);
 244                         }
 245
 246                         allocation_size = SMB_VFS_GET_ALLOC_SIZE(conn, NULL, &smb_fname->st);
 247                 }
 248         }
 249
 250         *out_flags = flags;
 251
 252         round_timespec(conn->ts_res, &create_date_ts);
 253         unix_timespec_to_nt_time(out_creation_time, create_date_ts);
 254
 255         round_timespec(conn->ts_res, &adate_ts);
 256         unix_timespec_to_nt_time(out_last_access_time, adate_ts);
 257
 258         round_timespec(conn->ts_res, &mdate_ts);
 259         unix_timespec_to_nt_time(out_last_write_time, mdate_ts);
 260
 261         round_timespec(conn->ts_res, &cdate_ts);
 262         unix_timespec_to_nt_time(out_change_time, cdate_ts);
 263
 264         *out_allocation_size = allocation_size;
 265         *out_end_of_file = file_size;
 266         *out_file_attributes = dos_attrs;
 267
 268         return NT_STATUS_OK;
 269 }
 270
 271 struct smbd_smb2_close_state {
 272         uint16_t in_flags;
 273         uint64_t in_file_id_volatile;
 274         uint16_t out_flags;
 275         NTTIME out_creation_time;
 276         NTTIME out_last_access_time;
 277         NTTIME out_last_write_time;
 278         NTTIME out_change_time;
 279         uint64_t out_allocation_size;
 280         uint64_t out_end_of_file;
 281         uint32_t out_file_attributes;
 282 };
 283
 284 static struct tevent_req *smbd_smb2_close_send(TALLOC_CTX *mem_ctx,
 285                                                struct tevent_context *ev,
 286                                                struct smbd_smb2_request *smb2req,
 287                                                uint16_t in_flags,
 288                                                uint64_t in_file_id_volatile)
 289 {
 290         struct tevent_req *req;
 291         struct smbd_smb2_close_state *state;
 292         NTSTATUS status;
 293
 294         req = tevent_req_create(mem_ctx, &state,
 295                                 struct smbd_smb2_close_state);
 296         if (req == NULL) {
 297                 return NULL;
 298         }
 299         state->in_flags = in_flags;
 300         state->in_file_id_volatile = in_file_id_volatile;
 301
 302         status = smbd_smb2_close(smb2req,
 303                                  state->in_flags,
 304                                  state->in_file_id_volatile,
 305                                  &state->out_flags,
 306                                  &state->out_creation_time,
 307                                  &state->out_last_access_time,
 308                                  &state->out_last_write_time,
 309                                  &state->out_change_time,
 310                                  &state->out_allocation_size,
 311                                  &state->out_end_of_file,
 312                                  &state->out_file_attributes);
 313         if (tevent_req_nterror(req, status)) {
 314                 return tevent_req_post(req, ev);
 315         }
 316
 317         tevent_req_done(req);
 318         return tevent_req_post(req, ev);
 319 }
 320
 321 static NTSTATUS smbd_smb2_close_recv(struct tevent_req *req,
 322                                      uint16_t *out_flags,
 323                                      NTTIME *out_creation_time,
 324                                      NTTIME *out_last_access_time,
 325                                      NTTIME *out_last_write_time,
 326                                      NTTIME *out_change_time,
 327                                      uint64_t *out_allocation_size,
 328                                      uint64_t *out_end_of_file,
 329                                      uint32_t *out_file_attributes)
 330 {
 331         struct smbd_smb2_close_state *state =
 332                 tevent_req_data(req,
 333                 struct smbd_smb2_close_state);
 334         NTSTATUS status;
 335
 336         if (tevent_req_is_nterror(req, &status)) {
 337                 tevent_req_received(req);
 338                 return status;
 339         }
 340
 341         *out_flags = state->out_flags;
 342         *out_creation_time = state->out_creation_time;
 343         *out_last_access_time = state->out_last_access_time;
 344         *out_last_write_time = state->out_last_write_time;
 345         *out_change_time = state->out_change_time;
 346         *out_allocation_size = state->out_allocation_size;
 347         *out_end_of_file = state->out_end_of_file;
 348         *out_file_attributes = state->out_file_attributes;
 349
 350         tevent_req_received(req);
 351         return NT_STATUS_OK;
 352 }