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         const uint8_t *inhdr;
  43         const uint8_t *inbody;
  44         int i = req->current_idx;
  45         size_t expected_body_size = 0x21;
  46         size_t body_size;
  47         uint8_t in_info_type;
  48         uint8_t in_file_info_class;
  49         uint16_t in_input_buffer_offset;
  50         uint32_t in_input_buffer_length;
  51         DATA_BLOB in_input_buffer;
  52         uint32_t in_additional_information;
  53         uint64_t in_file_id_persistent;
  54         uint64_t in_file_id_volatile;
  55         struct tevent_req *subreq;
  56
  57         inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
  58         if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
  59                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  60         }
  61
  62         inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
  63
  64         body_size = SVAL(inbody, 0x00);
  65         if (body_size != expected_body_size) {
  66                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  67         }
  68
  69         in_info_type                    = CVAL(inbody, 0x02);
  70         in_file_info_class              = CVAL(inbody, 0x03);
  71         in_input_buffer_length          = IVAL(inbody, 0x04);
  72         in_input_buffer_offset          = SVAL(inbody, 0x08);
  73         /* 0x0A 2 bytes reserved */
  74         in_additional_information       = IVAL(inbody, 0x0C);
  75         in_file_id_persistent           = BVAL(inbody, 0x10);
  76         in_file_id_volatile             = BVAL(inbody, 0x18);
  77
  78         if (in_input_buffer_offset == 0 && in_input_buffer_length == 0) {
  79                 /* This is ok */
  80         } else if (in_input_buffer_offset !=
  81                    (SMB2_HDR_BODY + (body_size & 0xFFFFFFFE))) {
  82                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  83         }
  84
  85         if (in_input_buffer_length > req->in.vector[i+2].iov_len) {
  86                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  87         }
  88
  89         in_input_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
  90         in_input_buffer.length = in_input_buffer_length;
  91
  92         if (req->compat_chain_fsp) {
  93                 /* skip check */
  94         } else if (in_file_id_persistent != in_file_id_volatile) {
  95                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
  96         }
  97
  98         subreq = smbd_smb2_setinfo_send(req,
  99                                         req->sconn->smb2.event_ctx,
 100                                         req,
 101                                         in_info_type,
 102                                         in_file_info_class,
 103                                         in_input_buffer,
 104                                         in_additional_information,
 105                                         in_file_id_volatile);
 106         if (subreq == NULL) {
 107                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 108         }
 109         tevent_req_set_callback(subreq, smbd_smb2_request_setinfo_done, req);
 110
 111         return smbd_smb2_request_pending_queue(req, subreq);
 112 }
 113
 114 static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq)
 115 {
 116         struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
 117                                         struct smbd_smb2_request);
 118         DATA_BLOB outbody;
 119         NTSTATUS status;
 120         NTSTATUS error; /* transport error */
 121
 122         status = smbd_smb2_setinfo_recv(subreq);
 123         TALLOC_FREE(subreq);
 124         if (!NT_STATUS_IS_OK(status)) {
 125                 error = smbd_smb2_request_error(req, status);
 126                 if (!NT_STATUS_IS_OK(error)) {
 127                         smbd_server_connection_terminate(req->sconn,
 128                                                          nt_errstr(error));
 129                         return;
 130                 }
 131                 return;
 132         }
 133
 134         outbody = data_blob_talloc(req->out.vector, NULL, 0x02);
 135         if (outbody.data == NULL) {
 136                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 137                 if (!NT_STATUS_IS_OK(error)) {
 138                         smbd_server_connection_terminate(req->sconn,
 139                                                          nt_errstr(error));
 140                         return;
 141                 }
 142                 return;
 143         }
 144
 145         SSVAL(outbody.data, 0x00, 0x02);        /* struct size */
 146
 147         error = smbd_smb2_request_done(req, outbody, NULL);
 148         if (!NT_STATUS_IS_OK(error)) {
 149                 smbd_server_connection_terminate(req->sconn,
 150                                                  nt_errstr(error));
 151                 return;
 152         }
 153 }
 154
 155 struct smbd_smb2_setinfo_state {
 156         struct smbd_smb2_request *smb2req;
 157 };
 158
 159 static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
 160                                                  struct tevent_context *ev,
 161                                                  struct smbd_smb2_request *smb2req,
 162                                                  uint8_t in_info_type,
 163                                                  uint8_t in_file_info_class,
 164                                                  DATA_BLOB in_input_buffer,
 165                                                  uint32_t in_additional_information,
 166                                                  uint64_t in_file_id_volatile)
 167 {
 168         struct tevent_req *req = NULL;
 169         struct smbd_smb2_setinfo_state *state = NULL;
 170         struct smb_request *smbreq = NULL;
 171         connection_struct *conn = smb2req->tcon->compat_conn;
 172         files_struct *fsp = NULL;
 173         NTSTATUS status;
 174
 175         req = tevent_req_create(mem_ctx, &state,
 176                                 struct smbd_smb2_setinfo_state);
 177         if (req == NULL) {
 178                 return NULL;
 179         }
 180         state->smb2req = smb2req;
 181
 182         DEBUG(10,("smbd_smb2_setinfo_send: file_id[0x%016llX]\n",
 183                   (unsigned long long)in_file_id_volatile));
 184
 185         smbreq = smbd_smb2_fake_smb_request(smb2req);
 186         if (tevent_req_nomem(smbreq, req)) {
 187                 return tevent_req_post(req, ev);
 188         }
 189
 190         fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
 191         if (fsp == NULL) {
 192                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 193                 return tevent_req_post(req, ev);
 194         }
 195         if (conn != fsp->conn) {
 196                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 197                 return tevent_req_post(req, ev);
 198         }
 199         if (smb2req->session->vuid != fsp->vuid) {
 200                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 201                 return tevent_req_post(req, ev);
 202         }
 203
 204         if (IS_IPC(conn)) {
 205                 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
 206                 return tevent_req_post(req, ev);
 207         }
 208
 209         switch (in_info_type) {
 210         case 0x01:/* SMB2_SETINFO_FILE */
 211         {
 212                 uint16_t file_info_level;
 213                 char *data;
 214                 int data_size;
 215                 int ret_size = 0;
 216
 217
 218                 file_info_level = in_file_info_class + 1000;
 219                 if (file_info_level == SMB_FILE_RENAME_INFORMATION) {
 220                         /* SMB2_FILE_RENAME_INFORMATION_INTERNAL == 0xFF00 + in_file_info_class */
 221                         file_info_level = SMB2_FILE_RENAME_INFORMATION_INTERNAL;
 222                         if (fsp->oplock_type != FAKE_LEVEL_II_OPLOCK &&
 223                             fsp->oplock_type != NO_OPLOCK) {
 224                                 /* No break, but error. */
 225                                 tevent_req_nterror(req, NT_STATUS_SHARING_VIOLATION);
 226                                 return tevent_req_post(req, ev);
 227                         }
 228                 }
 229
 230                 if (fsp->fh->fd == -1) {
 231                         /*
 232                          * This is actually a SETFILEINFO on a directory
 233                          * handle (returned from an NT SMB). NT5.0 seems
 234                          * to do this call. JRA.
 235                          */
 236                         if (INFO_LEVEL_IS_UNIX(file_info_level)) {
 237                                 /* Always do lstat for UNIX calls. */
 238                                 if (SMB_VFS_LSTAT(conn, fsp->fsp_name)) {
 239                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 240                                                  "SMB_VFS_LSTAT of %s failed "
 241                                                  "(%s)\n", fsp_str_dbg(fsp),
 242                                                  strerror(errno)));
 243                                         status = map_nt_error_from_unix(errno);
 244                                         tevent_req_nterror(req, status);
 245                                         return tevent_req_post(req, ev);
 246                                 }
 247                         } else {
 248                                 if (SMB_VFS_STAT(conn, fsp->fsp_name) != 0) {
 249                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 250                                                  "fileinfo of %s failed (%s)\n",
 251                                                  fsp_str_dbg(fsp),
 252                                                  strerror(errno)));
 253                                         status = map_nt_error_from_unix(errno);
 254                                         tevent_req_nterror(req, status);
 255                                         return tevent_req_post(req, ev);
 256                                 }
 257                         }
 258                 } else if (fsp->print_file) {
 259                         /*
 260                          * Doing a DELETE_ON_CLOSE should cancel a print job.
 261                          */
 262                         if ((file_info_level == SMB_SET_FILE_DISPOSITION_INFO)
 263                             && in_input_buffer.length >= 1
 264                             && CVAL(in_input_buffer.data,0)) {
 265                                 fsp->fh->private_options |= NTCREATEX_OPTIONS_PRIVATE_DELETE_ON_CLOSE;
 266
 267                                 DEBUG(3,("smbd_smb2_setinfo_send: "
 268                                          "Cancelling print job (%s)\n",
 269                                          fsp_str_dbg(fsp)));
 270
 271                                 tevent_req_done(req);
 272                                 return tevent_req_post(req, ev);
 273                         } else {
 274                                 tevent_req_nterror(req,
 275                                         NT_STATUS_OBJECT_PATH_INVALID);
 276                                 return tevent_req_post(req, ev);
 277                         }
 278                 } else {
 279                         /*
 280                          * Original code - this is an open file.
 281                          */
 282
 283                         if (SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
 284                                 DEBUG(3,("smbd_smb2_setinfo_send: fstat "
 285                                          "of fnum %d failed (%s)\n", fsp->fnum,
 286                                          strerror(errno)));
 287                                 status = map_nt_error_from_unix(errno);
 288                                 tevent_req_nterror(req, status);
 289                                 return tevent_req_post(req, ev);
 290                         }
 291                 }
 292
 293                 data = NULL;
 294                 data_size = in_input_buffer.length;
 295                 if (data_size > 0) {
 296                         data = (char *)SMB_MALLOC_ARRAY(char, data_size);
 297                         if (tevent_req_nomem(data, req)) {
 298                                 return tevent_req_post(req, ev);
 299                         }
 300                         memcpy(data, in_input_buffer.data, data_size);
 301                 }
 302
 303                 status = smbd_do_setfilepathinfo(conn, smbreq, state,
 304                                                  file_info_level,
 305                                                  fsp,
 306                                                  fsp->fsp_name,
 307                                                  &data,
 308                                                  data_size,
 309                                                  &ret_size);
 310                 SAFE_FREE(data);
 311                 if (!NT_STATUS_IS_OK(status)) {
 312                         if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
 313                                 status = NT_STATUS_INVALID_INFO_CLASS;
 314                         }
 315                         tevent_req_nterror(req, status);
 316                         return tevent_req_post(req, ev);
 317                 }
 318                 break;
 319         }
 320
 321         case 0x03:/* SMB2_SETINFO_SECURITY */
 322         {
 323                 if (!CAN_WRITE(conn)) {
 324                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 325                         return tevent_req_post(req, ev);
 326                 }
 327
 328                 status = set_sd(fsp,
 329                                 in_input_buffer.data,
 330                                 in_input_buffer.length,
 331                                 in_additional_information);
 332                 if (!NT_STATUS_IS_OK(status)) {
 333                         tevent_req_nterror(req, status);
 334                         return tevent_req_post(req, ev);
 335                 }
 336                 break;
 337         }
 338
 339         default:
 340                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 341                 return tevent_req_post(req, ev);
 342         }
 343
 344         tevent_req_done(req);
 345         return tevent_req_post(req, ev);
 346 }
 347
 348 static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req)
 349 {
 350         NTSTATUS status;
 351
 352         if (tevent_req_is_nterror(req, &status)) {
 353                 tevent_req_received(req);
 354                 return status;
 355         }
 356
 357         tevent_req_received(req);
 358         return NT_STATUS_OK;
 359 }