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                                                  struct files_struct *in_fsp,
  33                                                  uint8_t in_info_type,
  34                                                  uint8_t in_file_info_class,
  35                                                  DATA_BLOB in_input_buffer,
  36                                                  uint32_t in_additional_information);
  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         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 files_struct *in_fsp;
  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 = SMBD_SMB2_IN_BODY_PTR(req);
  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 + SMBD_SMB2_IN_BODY_LEN(req))) {
  74                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  75         }
  76
  77         if (in_input_buffer_length > SMBD_SMB2_IN_DYN_LEN(req)) {
  78                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  79         }
  80
  81         in_input_buffer.data = SMBD_SMB2_IN_DYN_PTR(req);
  82         in_input_buffer.length = in_input_buffer_length;
  83
  84         if (in_input_buffer.length > req->sconn->smb2.max_trans) {
  85                 DEBUG(2,("smbd_smb2_request_process_setinfo: "
  86                          "client ignored max trans: %s: 0x%08X: 0x%08X\n",
  87                          __location__, (unsigned)in_input_buffer.length,
  88                          (unsigned)req->sconn->smb2.max_trans));
  89                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  90         }
  91
  92         status = smbd_smb2_request_verify_creditcharge(req,
  93                                                 in_input_buffer.length);
  94         if (!NT_STATUS_IS_OK(status)) {
  95                 return smbd_smb2_request_error(req, status);
  96         }
  97
  98         in_fsp = file_fsp_smb2(req, in_file_id_persistent, in_file_id_volatile);
  99         if (in_fsp == NULL) {
 100                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
 101         }
 102
 103         subreq = smbd_smb2_setinfo_send(req, req->sconn->ev_ctx,
 104                                         req, in_fsp,
 105                                         in_info_type,
 106                                         in_file_info_class,
 107                                         in_input_buffer,
 108                                         in_additional_information);
 109         if (subreq == NULL) {
 110                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 111         }
 112         tevent_req_set_callback(subreq, smbd_smb2_request_setinfo_done, req);
 113
 114         return smbd_smb2_request_pending_queue(req, subreq, 500);
 115 }
 116
 117 static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq)
 118 {
 119         struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
 120                                         struct smbd_smb2_request);
 121         DATA_BLOB outbody;
 122         NTSTATUS status;
 123         NTSTATUS error; /* transport error */
 124
 125         status = smbd_smb2_setinfo_recv(subreq);
 126         TALLOC_FREE(subreq);
 127         if (!NT_STATUS_IS_OK(status)) {
 128                 error = smbd_smb2_request_error(req, status);
 129                 if (!NT_STATUS_IS_OK(error)) {
 130                         smbd_server_connection_terminate(req->sconn,
 131                                                          nt_errstr(error));
 132                         return;
 133                 }
 134                 return;
 135         }
 136
 137         outbody = data_blob_talloc(req->out.vector, NULL, 0x02);
 138         if (outbody.data == NULL) {
 139                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 140                 if (!NT_STATUS_IS_OK(error)) {
 141                         smbd_server_connection_terminate(req->sconn,
 142                                                          nt_errstr(error));
 143                         return;
 144                 }
 145                 return;
 146         }
 147
 148         SSVAL(outbody.data, 0x00, 0x02);        /* struct size */
 149
 150         error = smbd_smb2_request_done(req, outbody, NULL);
 151         if (!NT_STATUS_IS_OK(error)) {
 152                 smbd_server_connection_terminate(req->sconn,
 153                                                  nt_errstr(error));
 154                 return;
 155         }
 156 }
 157
 158 struct smbd_smb2_setinfo_state {
 159         struct smbd_smb2_request *smb2req;
 160 };
 161
 162 static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
 163                                                  struct tevent_context *ev,
 164                                                  struct smbd_smb2_request *smb2req,
 165                                                  struct files_struct *fsp,
 166                                                  uint8_t in_info_type,
 167                                                  uint8_t in_file_info_class,
 168                                                  DATA_BLOB in_input_buffer,
 169                                                  uint32_t in_additional_information)
 170 {
 171         struct tevent_req *req = NULL;
 172         struct smbd_smb2_setinfo_state *state = NULL;
 173         struct smb_request *smbreq = NULL;
 174         connection_struct *conn = smb2req->tcon->compat;
 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: %s - %s\n",
 185                   fsp_str_dbg(fsp), fsp_fnum_dbg(fsp)));
 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         if (IS_IPC(conn)) {
 193                 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
 194                 return tevent_req_post(req, ev);
 195         }
 196
 197         switch (in_info_type) {
 198         case 0x01:/* SMB2_SETINFO_FILE */
 199         {
 200                 uint16_t file_info_level;
 201                 char *data;
 202                 int data_size;
 203                 int ret_size = 0;
 204
 205
 206                 file_info_level = in_file_info_class + 1000;
 207                 if (file_info_level == SMB_FILE_RENAME_INFORMATION) {
 208                         /* SMB2_FILE_RENAME_INFORMATION_INTERNAL == 0xFF00 + in_file_info_class */
 209                         file_info_level = SMB2_FILE_RENAME_INFORMATION_INTERNAL;
 210                 }
 211
 212                 if (fsp->fh->fd == -1) {
 213                         /*
 214                          * This is actually a SETFILEINFO on a directory
 215                          * handle (returned from an NT SMB). NT5.0 seems
 216                          * to do this call. JRA.
 217                          */
 218                         if (INFO_LEVEL_IS_UNIX(file_info_level)) {
 219                                 /* Always do lstat for UNIX calls. */
 220                                 if (SMB_VFS_LSTAT(conn, fsp->fsp_name)) {
 221                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 222                                                  "SMB_VFS_LSTAT of %s failed "
 223                                                  "(%s)\n", fsp_str_dbg(fsp),
 224                                                  strerror(errno)));
 225                                         status = map_nt_error_from_unix(errno);
 226                                         tevent_req_nterror(req, status);
 227                                         return tevent_req_post(req, ev);
 228                                 }
 229                         } else {
 230                                 if (SMB_VFS_STAT(conn, fsp->fsp_name) != 0) {
 231                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 232                                                  "fileinfo of %s failed (%s)\n",
 233                                                  fsp_str_dbg(fsp),
 234                                                  strerror(errno)));
 235                                         status = map_nt_error_from_unix(errno);
 236                                         tevent_req_nterror(req, status);
 237                                         return tevent_req_post(req, ev);
 238                                 }
 239                         }
 240                 } else if (fsp->print_file) {
 241                         /*
 242                          * Doing a DELETE_ON_CLOSE should cancel a print job.
 243                          */
 244                         if ((file_info_level == SMB_SET_FILE_DISPOSITION_INFO)
 245                             && in_input_buffer.length >= 1
 246                             && CVAL(in_input_buffer.data,0)) {
 247                                 fsp->fh->private_options |= NTCREATEX_OPTIONS_PRIVATE_DELETE_ON_CLOSE;
 248
 249                                 DEBUG(3,("smbd_smb2_setinfo_send: "
 250                                          "Cancelling print job (%s)\n",
 251                                          fsp_str_dbg(fsp)));
 252
 253                                 tevent_req_done(req);
 254                                 return tevent_req_post(req, ev);
 255                         } else {
 256                                 tevent_req_nterror(req,
 257                                         NT_STATUS_OBJECT_PATH_INVALID);
 258                                 return tevent_req_post(req, ev);
 259                         }
 260                 } else {
 261                         /*
 262                          * Original code - this is an open file.
 263                          */
 264
 265                         if (SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
 266                                 DEBUG(3,("smbd_smb2_setinfo_send: fstat "
 267                                          "of %s failed (%s)\n",
 268                                          fsp_fnum_dbg(fsp),
 269                                          strerror(errno)));
 270                                 status = map_nt_error_from_unix(errno);
 271                                 tevent_req_nterror(req, status);
 272                                 return tevent_req_post(req, ev);
 273                         }
 274                 }
 275
 276                 data = NULL;
 277                 data_size = in_input_buffer.length;
 278                 if (data_size > 0) {
 279                         data = (char *)SMB_MALLOC_ARRAY(char, data_size);
 280                         if (tevent_req_nomem(data, req)) {
 281                                 return tevent_req_post(req, ev);
 282                         }
 283                         memcpy(data, in_input_buffer.data, data_size);
 284                 }
 285
 286                 status = smbd_do_setfilepathinfo(conn, smbreq, state,
 287                                                  file_info_level,
 288                                                  fsp,
 289                                                  fsp->fsp_name,
 290                                                  &data,
 291                                                  data_size,
 292                                                  &ret_size);
 293                 SAFE_FREE(data);
 294                 if (!NT_STATUS_IS_OK(status)) {
 295                         if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
 296                                 status = NT_STATUS_INVALID_INFO_CLASS;
 297                         }
 298                         tevent_req_nterror(req, status);
 299                         return tevent_req_post(req, ev);
 300                 }
 301                 break;
 302         }
 303
 304         case 0x03:/* SMB2_SETINFO_SECURITY */
 305         {
 306                 if (!CAN_WRITE(conn)) {
 307                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 308                         return tevent_req_post(req, ev);
 309                 }
 310
 311                 status = set_sd_blob(fsp,
 312                                 in_input_buffer.data,
 313                                 in_input_buffer.length,
 314                                 in_additional_information);
 315                 if (!NT_STATUS_IS_OK(status)) {
 316                         tevent_req_nterror(req, status);
 317                         return tevent_req_post(req, ev);
 318                 }
 319                 break;
 320         }
 321
 322         default:
 323                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 324                 return tevent_req_post(req, ev);
 325         }
 326
 327         tevent_req_done(req);
 328         return tevent_req_post(req, ev);
 329 }
 330
 331 static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req)
 332 {
 333         NTSTATUS status;
 334
 335         if (tevent_req_is_nterror(req, &status)) {
 336                 tevent_req_received(req);
 337                 return status;
 338         }
 339
 340         tevent_req_received(req);
 341         return NT_STATUS_OK;
 342 }