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