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