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         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 files_struct *in_fsp;
  54         struct tevent_req *subreq;
  55
  56         status = smbd_smb2_request_verify_sizes(req, 0x21);
  57         if (!NT_STATUS_IS_OK(status)) {
  58                 return smbd_smb2_request_error(req, status);
  59         }
  60         inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
  61
  62         in_info_type                    = CVAL(inbody, 0x02);
  63         in_file_info_class              = CVAL(inbody, 0x03);
  64         in_input_buffer_length          = IVAL(inbody, 0x04);
  65         in_input_buffer_offset          = SVAL(inbody, 0x08);
  66         /* 0x0A 2 bytes reserved */
  67         in_additional_information       = IVAL(inbody, 0x0C);
  68         in_file_id_persistent           = BVAL(inbody, 0x10);
  69         in_file_id_volatile             = BVAL(inbody, 0x18);
  70
  71         if (in_input_buffer_offset == 0 && in_input_buffer_length == 0) {
  72                 /* This is ok */
  73         } else if (in_input_buffer_offset !=
  74                    (SMB2_HDR_BODY + req->in.vector[i+1].iov_len)) {
  75                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  76         }
  77
  78         if (in_input_buffer_length > req->in.vector[i+2].iov_len) {
  79                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  80         }
  81
  82         in_input_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
  83         in_input_buffer.length = in_input_buffer_length;
  84
  85         if (in_input_buffer.length > req->sconn->smb2.max_trans) {
  86                 DEBUG(2,("smbd_smb2_request_process_setinfo: "
  87                          "client ignored max trans: %s: 0x%08X: 0x%08X\n",
  88                          __location__, (unsigned)in_input_buffer.length,
  89                          (unsigned)req->sconn->smb2.max_trans));
  90                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  91         }
  92
  93         status = smbd_smb2_request_verify_creditcharge(req,
  94                                                 in_input_buffer.length);
  95         if (!NT_STATUS_IS_OK(status)) {
  96                 return smbd_smb2_request_error(req, status);
  97         }
  98
  99         in_fsp = file_fsp_smb2(req, in_file_id_persistent, in_file_id_volatile);
 100         if (in_fsp == NULL) {
 101                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
 102         }
 103
 104         subreq = smbd_smb2_setinfo_send(req, req->sconn->ev_ctx,
 105                                         req, in_fsp,
 106                                         in_info_type,
 107                                         in_file_info_class,
 108                                         in_input_buffer,
 109                                         in_additional_information);
 110         if (subreq == NULL) {
 111                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 112         }
 113         tevent_req_set_callback(subreq, smbd_smb2_request_setinfo_done, req);
 114
 115         return smbd_smb2_request_pending_queue(req, subreq, 500);
 116 }
 117
 118 static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq)
 119 {
 120         struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
 121                                         struct smbd_smb2_request);
 122         DATA_BLOB outbody;
 123         NTSTATUS status;
 124         NTSTATUS error; /* transport error */
 125
 126         status = smbd_smb2_setinfo_recv(subreq);
 127         TALLOC_FREE(subreq);
 128         if (!NT_STATUS_IS_OK(status)) {
 129                 error = smbd_smb2_request_error(req, status);
 130                 if (!NT_STATUS_IS_OK(error)) {
 131                         smbd_server_connection_terminate(req->sconn,
 132                                                          nt_errstr(error));
 133                         return;
 134                 }
 135                 return;
 136         }
 137
 138         outbody = data_blob_talloc(req->out.vector, NULL, 0x02);
 139         if (outbody.data == NULL) {
 140                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 141                 if (!NT_STATUS_IS_OK(error)) {
 142                         smbd_server_connection_terminate(req->sconn,
 143                                                          nt_errstr(error));
 144                         return;
 145                 }
 146                 return;
 147         }
 148
 149         SSVAL(outbody.data, 0x00, 0x02);        /* struct size */
 150
 151         error = smbd_smb2_request_done(req, outbody, NULL);
 152         if (!NT_STATUS_IS_OK(error)) {
 153                 smbd_server_connection_terminate(req->sconn,
 154                                                  nt_errstr(error));
 155                 return;
 156         }
 157 }
 158
 159 struct smbd_smb2_setinfo_state {
 160         struct smbd_smb2_request *smb2req;
 161 };
 162
 163 static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
 164                                                  struct tevent_context *ev,
 165                                                  struct smbd_smb2_request *smb2req,
 166                                                  struct files_struct *fsp,
 167                                                  uint8_t in_info_type,
 168                                                  uint8_t in_file_info_class,
 169                                                  DATA_BLOB in_input_buffer,
 170                                                  uint32_t in_additional_information)
 171 {
 172         struct tevent_req *req = NULL;
 173         struct smbd_smb2_setinfo_state *state = NULL;
 174         struct smb_request *smbreq = NULL;
 175         connection_struct *conn = smb2req->tcon->compat;
 176         NTSTATUS status;
 177
 178         req = tevent_req_create(mem_ctx, &state,
 179                                 struct smbd_smb2_setinfo_state);
 180         if (req == NULL) {
 181                 return NULL;
 182         }
 183         state->smb2req = smb2req;
 184
 185         DEBUG(10,("smbd_smb2_setinfo_send: %s - %s\n",
 186                   fsp_str_dbg(fsp), fsp_fnum_dbg(fsp)));
 187
 188         smbreq = smbd_smb2_fake_smb_request(smb2req);
 189         if (tevent_req_nomem(smbreq, req)) {
 190                 return tevent_req_post(req, ev);
 191         }
 192
 193         if (IS_IPC(conn)) {
 194                 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
 195                 return tevent_req_post(req, ev);
 196         }
 197
 198         switch (in_info_type) {
 199         case 0x01:/* SMB2_SETINFO_FILE */
 200         {
 201                 uint16_t file_info_level;
 202                 char *data;
 203                 int data_size;
 204                 int ret_size = 0;
 205
 206
 207                 file_info_level = in_file_info_class + 1000;
 208                 if (file_info_level == SMB_FILE_RENAME_INFORMATION) {
 209                         /* SMB2_FILE_RENAME_INFORMATION_INTERNAL == 0xFF00 + in_file_info_class */
 210                         file_info_level = SMB2_FILE_RENAME_INFORMATION_INTERNAL;
 211                 }
 212
 213                 if (fsp->fh->fd == -1) {
 214                         /*
 215                          * This is actually a SETFILEINFO on a directory
 216                          * handle (returned from an NT SMB). NT5.0 seems
 217                          * to do this call. JRA.
 218                          */
 219                         if (INFO_LEVEL_IS_UNIX(file_info_level)) {
 220                                 /* Always do lstat for UNIX calls. */
 221                                 if (SMB_VFS_LSTAT(conn, fsp->fsp_name)) {
 222                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 223                                                  "SMB_VFS_LSTAT of %s failed "
 224                                                  "(%s)\n", fsp_str_dbg(fsp),
 225                                                  strerror(errno)));
 226                                         status = map_nt_error_from_unix(errno);
 227                                         tevent_req_nterror(req, status);
 228                                         return tevent_req_post(req, ev);
 229                                 }
 230                         } else {
 231                                 if (SMB_VFS_STAT(conn, fsp->fsp_name) != 0) {
 232                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 233                                                  "fileinfo of %s failed (%s)\n",
 234                                                  fsp_str_dbg(fsp),
 235                                                  strerror(errno)));
 236                                         status = map_nt_error_from_unix(errno);
 237                                         tevent_req_nterror(req, status);
 238                                         return tevent_req_post(req, ev);
 239                                 }
 240                         }
 241                 } else if (fsp->print_file) {
 242                         /*
 243                          * Doing a DELETE_ON_CLOSE should cancel a print job.
 244                          */
 245                         if ((file_info_level == SMB_SET_FILE_DISPOSITION_INFO)
 246                             && in_input_buffer.length >= 1
 247                             && CVAL(in_input_buffer.data,0)) {
 248                                 fsp->fh->private_options |= NTCREATEX_OPTIONS_PRIVATE_DELETE_ON_CLOSE;
 249
 250                                 DEBUG(3,("smbd_smb2_setinfo_send: "
 251                                          "Cancelling print job (%s)\n",
 252                                          fsp_str_dbg(fsp)));
 253
 254                                 tevent_req_done(req);
 255                                 return tevent_req_post(req, ev);
 256                         } else {
 257                                 tevent_req_nterror(req,
 258                                         NT_STATUS_OBJECT_PATH_INVALID);
 259                                 return tevent_req_post(req, ev);
 260                         }
 261                 } else {
 262                         /*
 263                          * Original code - this is an open file.
 264                          */
 265
 266                         if (SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
 267                                 DEBUG(3,("smbd_smb2_setinfo_send: fstat "
 268                                          "of %s failed (%s)\n",
 269                                          fsp_fnum_dbg(fsp),
 270                                          strerror(errno)));
 271                                 status = map_nt_error_from_unix(errno);
 272                                 tevent_req_nterror(req, status);
 273                                 return tevent_req_post(req, ev);
 274                         }
 275                 }
 276
 277                 data = NULL;
 278                 data_size = in_input_buffer.length;
 279                 if (data_size > 0) {
 280                         data = (char *)SMB_MALLOC_ARRAY(char, data_size);
 281                         if (tevent_req_nomem(data, req)) {
 282                                 return tevent_req_post(req, ev);
 283                         }
 284                         memcpy(data, in_input_buffer.data, data_size);
 285                 }
 286
 287                 status = smbd_do_setfilepathinfo(conn, smbreq, state,
 288                                                  file_info_level,
 289                                                  fsp,
 290                                                  fsp->fsp_name,
 291                                                  &data,
 292                                                  data_size,
 293                                                  &ret_size);
 294                 SAFE_FREE(data);
 295                 if (!NT_STATUS_IS_OK(status)) {
 296                         if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
 297                                 status = NT_STATUS_INVALID_INFO_CLASS;
 298                         }
 299                         tevent_req_nterror(req, status);
 300                         return tevent_req_post(req, ev);
 301                 }
 302                 break;
 303         }
 304
 305         case 0x03:/* SMB2_SETINFO_SECURITY */
 306         {
 307                 if (!CAN_WRITE(conn)) {
 308                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 309                         return tevent_req_post(req, ev);
 310                 }
 311
 312                 status = set_sd(fsp,
 313                                 in_input_buffer.data,
 314                                 in_input_buffer.length,
 315                                 in_additional_information);
 316                 if (!NT_STATUS_IS_OK(status)) {
 317                         tevent_req_nterror(req, status);
 318                         return tevent_req_post(req, ev);
 319                 }
 320                 break;
 321         }
 322
 323         default:
 324                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 325                 return tevent_req_post(req, ev);
 326         }
 327
 328         tevent_req_done(req);
 329         return tevent_req_post(req, ev);
 330 }
 331
 332 static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req)
 333 {
 334         NTSTATUS status;
 335
 336         if (tevent_req_is_nterror(req, &status)) {
 337                 tevent_req_received(req);
 338                 return status;
 339         }
 340
 341         tevent_req_received(req);
 342         return NT_STATUS_OK;
 343 }