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