source3/smbd/smb2_setinfo.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Core SMB2 server
   4
   5    Copyright (C) Stefan Metzmacher 2009
   6    Copyright (C) Jeremy Allison 2010
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "smbd/globals.h"
  24 #include "../libcli/smb/smb_common.h"
  25 #include "trans2.h"
  26
  27 static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
  28                                                  struct tevent_context *ev,
  29                                                  struct smbd_smb2_request *smb2req,
  30                                                  uint8_t in_info_type,
  31                                                  uint8_t in_file_info_class,
  32                                                  DATA_BLOB in_input_buffer,
  33                                                  uint32_t in_additional_information,
  34                                                  uint64_t in_file_id_volatile);
  35 static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req);
  36
  37 static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq);
  38 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req)
  39 {
  40         const uint8_t *inhdr;
  41         const uint8_t *inbody;
  42         int i = req->current_idx;
  43         size_t expected_body_size = 0x21;
  44         size_t body_size;
  45         uint8_t in_info_type;
  46         uint8_t in_file_info_class;
  47         uint16_t in_input_buffer_offset;
  48         uint32_t in_input_buffer_length;
  49         DATA_BLOB in_input_buffer;
  50         uint32_t in_additional_information;
  51         uint64_t in_file_id_persistent;
  52         uint64_t in_file_id_volatile;
  53         struct tevent_req *subreq;
  54
  55         inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
  56         if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
  57                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  58         }
  59
  60         inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
  61
  62         body_size = SVAL(inbody, 0x00);
  63         if (body_size != expected_body_size) {
  64                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  65         }
  66
  67         in_info_type                    = CVAL(inbody, 0x02);
  68         in_file_info_class              = CVAL(inbody, 0x03);
  69         in_input_buffer_length          = IVAL(inbody, 0x04);
  70         in_input_buffer_offset          = SVAL(inbody, 0x08);
  71         /* 0x0A 2 bytes reserved */
  72         in_additional_information       = IVAL(inbody, 0x0C);
  73         in_file_id_persistent           = BVAL(inbody, 0x10);
  74         in_file_id_volatile             = BVAL(inbody, 0x18);
  75
  76         if (in_input_buffer_offset == 0 && in_input_buffer_length == 0) {
  77                 /* This is ok */
  78         } else if (in_input_buffer_offset !=
  79                    (SMB2_HDR_BODY + (body_size & 0xFFFFFFFE))) {
  80                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  81         }
  82
  83         if (in_input_buffer_length > req->in.vector[i+2].iov_len) {
  84                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  85         }
  86
  87         in_input_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
  88         in_input_buffer.length = in_input_buffer_length;
  89
  90         if (req->compat_chain_fsp) {
  91                 /* skip check */
  92         } else if (in_file_id_persistent != in_file_id_volatile) {
  93                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
  94         }
  95
  96         subreq = smbd_smb2_setinfo_send(req,
  97                                         req->sconn->smb2.event_ctx,
  98                                         req,
  99                                         in_info_type,
 100                                         in_file_info_class,
 101                                         in_input_buffer,
 102                                         in_additional_information,
 103                                         in_file_id_volatile);
 104         if (subreq == NULL) {
 105                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 106         }
 107         tevent_req_set_callback(subreq, smbd_smb2_request_setinfo_done, req);
 108
 109         return smbd_smb2_request_pending_queue(req, subreq);
 110 }
 111
 112 static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq)
 113 {
 114         struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
 115                                         struct smbd_smb2_request);
 116         DATA_BLOB outbody;
 117         NTSTATUS status;
 118         NTSTATUS error; /* transport error */
 119
 120         status = smbd_smb2_setinfo_recv(subreq);
 121         TALLOC_FREE(subreq);
 122         if (!NT_STATUS_IS_OK(status)) {
 123                 error = smbd_smb2_request_error(req, status);
 124                 if (!NT_STATUS_IS_OK(error)) {
 125                         smbd_server_connection_terminate(req->sconn,
 126                                                          nt_errstr(error));
 127                         return;
 128                 }
 129                 return;
 130         }
 131
 132         outbody = data_blob_talloc(req->out.vector, NULL, 0x02);
 133         if (outbody.data == NULL) {
 134                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 135                 if (!NT_STATUS_IS_OK(error)) {
 136                         smbd_server_connection_terminate(req->sconn,
 137                                                          nt_errstr(error));
 138                         return;
 139                 }
 140                 return;
 141         }
 142
 143         SSVAL(outbody.data, 0x00, 0x02);        /* struct size */
 144
 145         error = smbd_smb2_request_done(req, outbody, NULL);
 146         if (!NT_STATUS_IS_OK(error)) {
 147                 smbd_server_connection_terminate(req->sconn,
 148                                                  nt_errstr(error));
 149                 return;
 150         }
 151 }
 152
 153 struct smbd_smb2_setinfo_state {
 154         struct smbd_smb2_request *smb2req;
 155 };
 156
 157 static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
 158                                                  struct tevent_context *ev,
 159                                                  struct smbd_smb2_request *smb2req,
 160                                                  uint8_t in_info_type,
 161                                                  uint8_t in_file_info_class,
 162                                                  DATA_BLOB in_input_buffer,
 163                                                  uint32_t in_additional_information,
 164                                                  uint64_t in_file_id_volatile)
 165 {
 166         struct tevent_req *req = NULL;
 167         struct smbd_smb2_setinfo_state *state = NULL;
 168         struct smb_request *smbreq = NULL;
 169         connection_struct *conn = smb2req->tcon->compat_conn;
 170         files_struct *fsp = NULL;
 171         NTSTATUS status;
 172
 173         req = tevent_req_create(mem_ctx, &state,
 174                                 struct smbd_smb2_setinfo_state);
 175         if (req == NULL) {
 176                 return NULL;
 177         }
 178         state->smb2req = smb2req;
 179
 180         DEBUG(10,("smbd_smb2_setinfo_send: file_id[0x%016llX]\n",
 181                   (unsigned long long)in_file_id_volatile));
 182
 183         smbreq = smbd_smb2_fake_smb_request(smb2req);
 184         if (tevent_req_nomem(smbreq, req)) {
 185                 return tevent_req_post(req, ev);
 186         }
 187
 188         fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
 189         if (fsp == NULL) {
 190                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 191                 return tevent_req_post(req, ev);
 192         }
 193         if (conn != fsp->conn) {
 194                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 195                 return tevent_req_post(req, ev);
 196         }
 197         if (smb2req->session->vuid != fsp->vuid) {
 198                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 199                 return tevent_req_post(req, ev);
 200         }
 201
 202         if (IS_IPC(conn)) {
 203                 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
 204                 return tevent_req_post(req, ev);
 205         }
 206
 207         switch (in_info_type) {
 208         case 0x01:/* SMB2_SETINFO_FILE */
 209         {
 210                 uint16_t file_info_level;
 211                 char *data;
 212                 int data_size;
 213                 int ret_size = 0;
 214
 215
 216                 file_info_level = in_file_info_class + 1000;
 217                 if (file_info_level == SMB_FILE_RENAME_INFORMATION) {
 218                         /* SMB2_FILE_RENAME_INFORMATION_INTERNAL == 0xFF00 + in_file_info_class */
 219                         file_info_level = SMB2_FILE_RENAME_INFORMATION_INTERNAL;
 220                         if (fsp->oplock_type != FAKE_LEVEL_II_OPLOCK &&
 221                             fsp->oplock_type != NO_OPLOCK) {
 222                                 /* No break, but error. */
 223                                 tevent_req_nterror(req, NT_STATUS_SHARING_VIOLATION);
 224                                 return tevent_req_post(req, ev);
 225                         }
 226                 }
 227
 228                 if (fsp->fh->fd == -1) {
 229                         /*
 230                          * This is actually a SETFILEINFO on a directory
 231                          * handle (returned from an NT SMB). NT5.0 seems
 232                          * to do this call. JRA.
 233                          */
 234                         if (INFO_LEVEL_IS_UNIX(file_info_level)) {
 235                                 /* Always do lstat for UNIX calls. */
 236                                 if (SMB_VFS_LSTAT(conn, fsp->fsp_name)) {
 237                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 238                                                  "SMB_VFS_LSTAT of %s failed "
 239                                                  "(%s)\n", fsp_str_dbg(fsp),
 240                                                  strerror(errno)));
 241                                         status = map_nt_error_from_unix(errno);
 242                                         tevent_req_nterror(req, status);
 243                                         return tevent_req_post(req, ev);
 244                                 }
 245                         } else {
 246                                 if (SMB_VFS_STAT(conn, fsp->fsp_name) != 0) {
 247                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 248                                                  "fileinfo of %s failed (%s)\n",
 249                                                  fsp_str_dbg(fsp),
 250                                                  strerror(errno)));
 251                                         status = map_nt_error_from_unix(errno);
 252                                         tevent_req_nterror(req, status);
 253                                         return tevent_req_post(req, ev);
 254                                 }
 255                         }
 256                 } else if (fsp->print_file) {
 257                         /*
 258                          * Doing a DELETE_ON_CLOSE should cancel a print job.
 259                          */
 260                         if ((file_info_level == SMB_SET_FILE_DISPOSITION_INFO)
 261                             && in_input_buffer.length >= 1
 262                             && CVAL(in_input_buffer.data,0)) {
 263                                 fsp->fh->private_options |= NTCREATEX_OPTIONS_PRIVATE_DELETE_ON_CLOSE;
 264
 265                                 DEBUG(3,("smbd_smb2_setinfo_send: "
 266                                          "Cancelling print job (%s)\n",
 267                                          fsp_str_dbg(fsp)));
 268
 269                                 tevent_req_done(req);
 270                                 return tevent_req_post(req, ev);
 271                         } else {
 272                                 tevent_req_nterror(req,
 273                                         NT_STATUS_OBJECT_PATH_INVALID);
 274                                 return tevent_req_post(req, ev);
 275                         }
 276                 } else {
 277                         /*
 278                          * Original code - this is an open file.
 279                          */
 280
 281                         if (SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
 282                                 DEBUG(3,("smbd_smb2_setinfo_send: fstat "
 283                                          "of fnum %d failed (%s)\n", fsp->fnum,
 284                                          strerror(errno)));
 285                                 status = map_nt_error_from_unix(errno);
 286                                 tevent_req_nterror(req, status);
 287                                 return tevent_req_post(req, ev);
 288                         }
 289                 }
 290
 291                 data = NULL;
 292                 data_size = in_input_buffer.length;
 293                 if (data_size > 0) {
 294                         data = (char *)SMB_MALLOC_ARRAY(char, data_size);
 295                         if (tevent_req_nomem(data, req)) {
 296                                 return tevent_req_post(req, ev);
 297                         }
 298                         memcpy(data, in_input_buffer.data, data_size);
 299                 }
 300
 301                 status = smbd_do_setfilepathinfo(conn, smbreq, state,
 302                                                  file_info_level,
 303                                                  fsp,
 304                                                  fsp->fsp_name,
 305                                                  &data,
 306                                                  data_size,
 307                                                  &ret_size);
 308                 SAFE_FREE(data);
 309                 if (!NT_STATUS_IS_OK(status)) {
 310                         if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
 311                                 status = NT_STATUS_INVALID_INFO_CLASS;
 312                         }
 313                         tevent_req_nterror(req, status);
 314                         return tevent_req_post(req, ev);
 315                 }
 316                 break;
 317         }
 318
 319         case 0x03:/* SMB2_SETINFO_SECURITY */
 320         {
 321                 if (!CAN_WRITE(conn)) {
 322                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 323                         return tevent_req_post(req, ev);
 324                 }
 325
 326                 status = set_sd(fsp,
 327                                 in_input_buffer.data,
 328                                 in_input_buffer.length,
 329                                 in_additional_information);
 330                 if (!NT_STATUS_IS_OK(status)) {
 331                         tevent_req_nterror(req, status);
 332                         return tevent_req_post(req, ev);
 333                 }
 334                 break;
 335         }
 336
 337         default:
 338                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 339                 return tevent_req_post(req, ev);
 340         }
 341
 342         tevent_req_done(req);
 343         return tevent_req_post(req, ev);
 344 }
 345
 346 static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req)
 347 {
 348         NTSTATUS status;
 349
 350         if (tevent_req_is_nterror(req, &status)) {
 351                 tevent_req_received(req);
 352                 return status;
 353         }
 354
 355         tevent_req_received(req);
 356         return NT_STATUS_OK;
 357 }