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/smbd.h"
  24 #include "smbd/globals.h"
  25 #include "../libcli/smb/smb_common.h"
  26 #include "trans2.h"
  27 #include "../lib/util/tevent_ntstatus.h"
  28
  29 static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
  30                                                  struct tevent_context *ev,
  31                                                  struct smbd_smb2_request *smb2req,
  32                                                  uint8_t in_info_type,
  33                                                  uint8_t in_file_info_class,
  34                                                  DATA_BLOB in_input_buffer,
  35                                                  uint32_t in_additional_information,
  36                                                  uint64_t in_file_id_volatile);
  37 static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req);
  38
  39 static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq);
  40 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req)
  41 {
  42         NTSTATUS status;
  43         const uint8_t *inbody;
  44         int i = req->current_idx;
  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         status = smbd_smb2_request_verify_sizes(req, 0x21);
  56         if (!NT_STATUS_IS_OK(status)) {
  57                 return smbd_smb2_request_error(req, status);
  58         }
  59         inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
  60
  61         in_info_type                    = CVAL(inbody, 0x02);
  62         in_file_info_class              = CVAL(inbody, 0x03);
  63         in_input_buffer_length          = IVAL(inbody, 0x04);
  64         in_input_buffer_offset          = SVAL(inbody, 0x08);
  65         /* 0x0A 2 bytes reserved */
  66         in_additional_information       = IVAL(inbody, 0x0C);
  67         in_file_id_persistent           = BVAL(inbody, 0x10);
  68         in_file_id_volatile             = BVAL(inbody, 0x18);
  69
  70         if (in_input_buffer_offset == 0 && in_input_buffer_length == 0) {
  71                 /* This is ok */
  72         } else if (in_input_buffer_offset !=
  73                    (SMB2_HDR_BODY + req->in.vector[i+1].iov_len)) {
  74                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  75         }
  76
  77         if (in_input_buffer_length > req->in.vector[i+2].iov_len) {
  78                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  79         }
  80
  81         in_input_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
  82         in_input_buffer.length = in_input_buffer_length;
  83
  84         if (in_input_buffer.length > req->sconn->smb2.max_trans) {
  85                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  86         }
  87
  88         status = smbd_smb2_request_verify_creditcharge(req,
  89                                                 in_input_buffer.length);
  90         if (!NT_STATUS_IS_OK(status)) {
  91                 return smbd_smb2_request_error(req, status);
  92         }
  93
  94         if (req->compat_chain_fsp) {
  95                 /* skip check */
  96         } else if (in_file_id_persistent != in_file_id_volatile) {
  97                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
  98         }
  99
 100         subreq = smbd_smb2_setinfo_send(req,
 101                                         req->sconn->ev_ctx,
 102                                         req,
 103                                         in_info_type,
 104                                         in_file_info_class,
 105                                         in_input_buffer,
 106                                         in_additional_information,
 107                                         in_file_id_volatile);
 108         if (subreq == NULL) {
 109                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 110         }
 111         tevent_req_set_callback(subreq, smbd_smb2_request_setinfo_done, req);
 112
 113         return smbd_smb2_request_pending_queue(req, subreq, 500);
 114 }
 115
 116 static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq)
 117 {
 118         struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
 119                                         struct smbd_smb2_request);
 120         DATA_BLOB outbody;
 121         NTSTATUS status;
 122         NTSTATUS error; /* transport error */
 123
 124         status = smbd_smb2_setinfo_recv(subreq);
 125         TALLOC_FREE(subreq);
 126         if (!NT_STATUS_IS_OK(status)) {
 127                 error = smbd_smb2_request_error(req, status);
 128                 if (!NT_STATUS_IS_OK(error)) {
 129                         smbd_server_connection_terminate(req->sconn,
 130                                                          nt_errstr(error));
 131                         return;
 132                 }
 133                 return;
 134         }
 135
 136         outbody = data_blob_talloc(req->out.vector, NULL, 0x02);
 137         if (outbody.data == NULL) {
 138                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 139                 if (!NT_STATUS_IS_OK(error)) {
 140                         smbd_server_connection_terminate(req->sconn,
 141                                                          nt_errstr(error));
 142                         return;
 143                 }
 144                 return;
 145         }
 146
 147         SSVAL(outbody.data, 0x00, 0x02);        /* struct size */
 148
 149         error = smbd_smb2_request_done(req, outbody, NULL);
 150         if (!NT_STATUS_IS_OK(error)) {
 151                 smbd_server_connection_terminate(req->sconn,
 152                                                  nt_errstr(error));
 153                 return;
 154         }
 155 }
 156
 157 struct smbd_smb2_setinfo_state {
 158         struct smbd_smb2_request *smb2req;
 159 };
 160
 161 static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
 162                                                  struct tevent_context *ev,
 163                                                  struct smbd_smb2_request *smb2req,
 164                                                  uint8_t in_info_type,
 165                                                  uint8_t in_file_info_class,
 166                                                  DATA_BLOB in_input_buffer,
 167                                                  uint32_t in_additional_information,
 168                                                  uint64_t in_file_id_volatile)
 169 {
 170         struct tevent_req *req = NULL;
 171         struct smbd_smb2_setinfo_state *state = NULL;
 172         struct smb_request *smbreq = NULL;
 173         connection_struct *conn = smb2req->tcon->compat_conn;
 174         files_struct *fsp = NULL;
 175         NTSTATUS status;
 176
 177         req = tevent_req_create(mem_ctx, &state,
 178                                 struct smbd_smb2_setinfo_state);
 179         if (req == NULL) {
 180                 return NULL;
 181         }
 182         state->smb2req = smb2req;
 183
 184         DEBUG(10,("smbd_smb2_setinfo_send: file_id[0x%016llX]\n",
 185                   (unsigned long long)in_file_id_volatile));
 186
 187         smbreq = smbd_smb2_fake_smb_request(smb2req);
 188         if (tevent_req_nomem(smbreq, req)) {
 189                 return tevent_req_post(req, ev);
 190         }
 191
 192         fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
 193         if (fsp == NULL) {
 194                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 195                 return tevent_req_post(req, ev);
 196         }
 197         if (conn != fsp->conn) {
 198                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 199                 return tevent_req_post(req, ev);
 200         }
 201         if (smb2req->session->vuid != fsp->vuid) {
 202                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 203                 return tevent_req_post(req, ev);
 204         }
 205
 206         if (IS_IPC(conn)) {
 207                 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
 208                 return tevent_req_post(req, ev);
 209         }
 210
 211         switch (in_info_type) {
 212         case 0x01:/* SMB2_SETINFO_FILE */
 213         {
 214                 uint16_t file_info_level;
 215                 char *data;
 216                 int data_size;
 217                 int ret_size = 0;
 218
 219
 220                 file_info_level = in_file_info_class + 1000;
 221                 if (file_info_level == SMB_FILE_RENAME_INFORMATION) {
 222                         /* SMB2_FILE_RENAME_INFORMATION_INTERNAL == 0xFF00 + in_file_info_class */
 223                         file_info_level = SMB2_FILE_RENAME_INFORMATION_INTERNAL;
 224                 }
 225
 226                 if (fsp->fh->fd == -1) {
 227                         /*
 228                          * This is actually a SETFILEINFO on a directory
 229                          * handle (returned from an NT SMB). NT5.0 seems
 230                          * to do this call. JRA.
 231                          */
 232                         if (INFO_LEVEL_IS_UNIX(file_info_level)) {
 233                                 /* Always do lstat for UNIX calls. */
 234                                 if (SMB_VFS_LSTAT(conn, fsp->fsp_name)) {
 235                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 236                                                  "SMB_VFS_LSTAT of %s failed "
 237                                                  "(%s)\n", fsp_str_dbg(fsp),
 238                                                  strerror(errno)));
 239                                         status = map_nt_error_from_unix(errno);
 240                                         tevent_req_nterror(req, status);
 241                                         return tevent_req_post(req, ev);
 242                                 }
 243                         } else {
 244                                 if (SMB_VFS_STAT(conn, fsp->fsp_name) != 0) {
 245                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 246                                                  "fileinfo of %s failed (%s)\n",
 247                                                  fsp_str_dbg(fsp),
 248                                                  strerror(errno)));
 249                                         status = map_nt_error_from_unix(errno);
 250                                         tevent_req_nterror(req, status);
 251                                         return tevent_req_post(req, ev);
 252                                 }
 253                         }
 254                 } else if (fsp->print_file) {
 255                         /*
 256                          * Doing a DELETE_ON_CLOSE should cancel a print job.
 257                          */
 258                         if ((file_info_level == SMB_SET_FILE_DISPOSITION_INFO)
 259                             && in_input_buffer.length >= 1
 260                             && CVAL(in_input_buffer.data,0)) {
 261                                 fsp->fh->private_options |= NTCREATEX_OPTIONS_PRIVATE_DELETE_ON_CLOSE;
 262
 263                                 DEBUG(3,("smbd_smb2_setinfo_send: "
 264                                          "Cancelling print job (%s)\n",
 265                                          fsp_str_dbg(fsp)));
 266
 267                                 tevent_req_done(req);
 268                                 return tevent_req_post(req, ev);
 269                         } else {
 270                                 tevent_req_nterror(req,
 271                                         NT_STATUS_OBJECT_PATH_INVALID);
 272                                 return tevent_req_post(req, ev);
 273                         }
 274                 } else {
 275                         /*
 276                          * Original code - this is an open file.
 277                          */
 278
 279                         if (SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
 280                                 DEBUG(3,("smbd_smb2_setinfo_send: fstat "
 281                                          "of fnum %d failed (%s)\n", fsp->fnum,
 282                                          strerror(errno)));
 283                                 status = map_nt_error_from_unix(errno);
 284                                 tevent_req_nterror(req, status);
 285                                 return tevent_req_post(req, ev);
 286                         }
 287                 }
 288
 289                 data = NULL;
 290                 data_size = in_input_buffer.length;
 291                 if (data_size > 0) {
 292                         data = (char *)SMB_MALLOC_ARRAY(char, data_size);
 293                         if (tevent_req_nomem(data, req)) {
 294                                 return tevent_req_post(req, ev);
 295                         }
 296                         memcpy(data, in_input_buffer.data, data_size);
 297                 }
 298
 299                 status = smbd_do_setfilepathinfo(conn, smbreq, state,
 300                                                  file_info_level,
 301                                                  fsp,
 302                                                  fsp->fsp_name,
 303                                                  &data,
 304                                                  data_size,
 305                                                  &ret_size);
 306                 SAFE_FREE(data);
 307                 if (!NT_STATUS_IS_OK(status)) {
 308                         if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
 309                                 status = NT_STATUS_INVALID_INFO_CLASS;
 310                         }
 311                         tevent_req_nterror(req, status);
 312                         return tevent_req_post(req, ev);
 313                 }
 314                 break;
 315         }
 316
 317         case 0x03:/* SMB2_SETINFO_SECURITY */
 318         {
 319                 if (!CAN_WRITE(conn)) {
 320                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 321                         return tevent_req_post(req, ev);
 322                 }
 323
 324                 status = set_sd(fsp,
 325                                 in_input_buffer.data,
 326                                 in_input_buffer.length,
 327                                 in_additional_information);
 328                 if (!NT_STATUS_IS_OK(status)) {
 329                         tevent_req_nterror(req, status);
 330                         return tevent_req_post(req, ev);
 331                 }
 332                 break;
 333         }
 334
 335         default:
 336                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 337                 return tevent_req_post(req, ev);
 338         }
 339
 340         tevent_req_done(req);
 341         return tevent_req_post(req, ev);
 342 }
 343
 344 static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req)
 345 {
 346         NTSTATUS status;
 347
 348         if (tevent_req_is_nterror(req, &status)) {
 349                 tevent_req_received(req);
 350                 return status;
 351         }
 352
 353         tevent_req_received(req);
 354         return NT_STATUS_OK;
 355 }