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
  28 static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
  29                                                  struct tevent_context *ev,
  30                                                  struct smbd_smb2_request *smb2req,
  31                                                  uint8_t in_info_type,
  32                                                  uint8_t in_file_info_class,
  33                                                  DATA_BLOB in_input_buffer,
  34                                                  uint32_t in_additional_information,
  35                                                  uint64_t in_file_id_volatile);
  36 static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req);
  37
  38 static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq);
  39 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req)
  40 {
  41         const uint8_t *inhdr;
  42         const uint8_t *inbody;
  43         int i = req->current_idx;
  44         size_t expected_body_size = 0x21;
  45         size_t body_size;
  46         uint8_t in_info_type;
  47         uint8_t in_file_info_class;
  48         uint16_t in_input_buffer_offset;
  49         uint32_t in_input_buffer_length;
  50         DATA_BLOB in_input_buffer;
  51         uint32_t in_additional_information;
  52         uint64_t in_file_id_persistent;
  53         uint64_t in_file_id_volatile;
  54         struct tevent_req *subreq;
  55
  56         inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
  57         if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
  58                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  59         }
  60
  61         inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
  62
  63         body_size = SVAL(inbody, 0x00);
  64         if (body_size != expected_body_size) {
  65                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  66         }
  67
  68         in_info_type                    = CVAL(inbody, 0x02);
  69         in_file_info_class              = CVAL(inbody, 0x03);
  70         in_input_buffer_length          = IVAL(inbody, 0x04);
  71         in_input_buffer_offset          = SVAL(inbody, 0x08);
  72         /* 0x0A 2 bytes reserved */
  73         in_additional_information       = IVAL(inbody, 0x0C);
  74         in_file_id_persistent           = BVAL(inbody, 0x10);
  75         in_file_id_volatile             = BVAL(inbody, 0x18);
  76
  77         if (in_input_buffer_offset == 0 && in_input_buffer_length == 0) {
  78                 /* This is ok */
  79         } else if (in_input_buffer_offset !=
  80                    (SMB2_HDR_BODY + (body_size & 0xFFFFFFFE))) {
  81                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  82         }
  83
  84         if (in_input_buffer_length > req->in.vector[i+2].iov_len) {
  85                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  86         }
  87
  88         in_input_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
  89         in_input_buffer.length = in_input_buffer_length;
  90
  91         if (req->compat_chain_fsp) {
  92                 /* skip check */
  93         } else if (in_file_id_persistent != in_file_id_volatile) {
  94                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
  95         }
  96
  97         subreq = smbd_smb2_setinfo_send(req,
  98                                         req->sconn->smb2.event_ctx,
  99                                         req,
 100                                         in_info_type,
 101                                         in_file_info_class,
 102                                         in_input_buffer,
 103                                         in_additional_information,
 104                                         in_file_id_volatile);
 105         if (subreq == NULL) {
 106                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 107         }
 108         tevent_req_set_callback(subreq, smbd_smb2_request_setinfo_done, req);
 109
 110         return smbd_smb2_request_pending_queue(req, subreq);
 111 }
 112
 113 static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq)
 114 {
 115         struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
 116                                         struct smbd_smb2_request);
 117         DATA_BLOB outbody;
 118         NTSTATUS status;
 119         NTSTATUS error; /* transport error */
 120
 121         status = smbd_smb2_setinfo_recv(subreq);
 122         TALLOC_FREE(subreq);
 123         if (!NT_STATUS_IS_OK(status)) {
 124                 error = smbd_smb2_request_error(req, status);
 125                 if (!NT_STATUS_IS_OK(error)) {
 126                         smbd_server_connection_terminate(req->sconn,
 127                                                          nt_errstr(error));
 128                         return;
 129                 }
 130                 return;
 131         }
 132
 133         outbody = data_blob_talloc(req->out.vector, NULL, 0x02);
 134         if (outbody.data == NULL) {
 135                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 136                 if (!NT_STATUS_IS_OK(error)) {
 137                         smbd_server_connection_terminate(req->sconn,
 138                                                          nt_errstr(error));
 139                         return;
 140                 }
 141                 return;
 142         }
 143
 144         SSVAL(outbody.data, 0x00, 0x02);        /* struct size */
 145
 146         error = smbd_smb2_request_done(req, outbody, NULL);
 147         if (!NT_STATUS_IS_OK(error)) {
 148                 smbd_server_connection_terminate(req->sconn,
 149                                                  nt_errstr(error));
 150                 return;
 151         }
 152 }
 153
 154 struct smbd_smb2_setinfo_state {
 155         struct smbd_smb2_request *smb2req;
 156 };
 157
 158 static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
 159                                                  struct tevent_context *ev,
 160                                                  struct smbd_smb2_request *smb2req,
 161                                                  uint8_t in_info_type,
 162                                                  uint8_t in_file_info_class,
 163                                                  DATA_BLOB in_input_buffer,
 164                                                  uint32_t in_additional_information,
 165                                                  uint64_t in_file_id_volatile)
 166 {
 167         struct tevent_req *req = NULL;
 168         struct smbd_smb2_setinfo_state *state = NULL;
 169         struct smb_request *smbreq = NULL;
 170         connection_struct *conn = smb2req->tcon->compat_conn;
 171         files_struct *fsp = NULL;
 172         NTSTATUS status;
 173
 174         req = tevent_req_create(mem_ctx, &state,
 175                                 struct smbd_smb2_setinfo_state);
 176         if (req == NULL) {
 177                 return NULL;
 178         }
 179         state->smb2req = smb2req;
 180
 181         DEBUG(10,("smbd_smb2_setinfo_send: file_id[0x%016llX]\n",
 182                   (unsigned long long)in_file_id_volatile));
 183
 184         smbreq = smbd_smb2_fake_smb_request(smb2req);
 185         if (tevent_req_nomem(smbreq, req)) {
 186                 return tevent_req_post(req, ev);
 187         }
 188
 189         fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
 190         if (fsp == NULL) {
 191                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 192                 return tevent_req_post(req, ev);
 193         }
 194         if (conn != fsp->conn) {
 195                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 196                 return tevent_req_post(req, ev);
 197         }
 198         if (smb2req->session->vuid != fsp->vuid) {
 199                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 200                 return tevent_req_post(req, ev);
 201         }
 202
 203         if (IS_IPC(conn)) {
 204                 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
 205                 return tevent_req_post(req, ev);
 206         }
 207
 208         switch (in_info_type) {
 209         case 0x01:/* SMB2_SETINFO_FILE */
 210         {
 211                 uint16_t file_info_level;
 212                 char *data;
 213                 int data_size;
 214                 int ret_size = 0;
 215
 216
 217                 file_info_level = in_file_info_class + 1000;
 218                 if (file_info_level == SMB_FILE_RENAME_INFORMATION) {
 219                         /* SMB2_FILE_RENAME_INFORMATION_INTERNAL == 0xFF00 + in_file_info_class */
 220                         file_info_level = SMB2_FILE_RENAME_INFORMATION_INTERNAL;
 221                         if (fsp->oplock_type != FAKE_LEVEL_II_OPLOCK &&
 222                             fsp->oplock_type != NO_OPLOCK) {
 223                                 /* No break, but error. */
 224                                 tevent_req_nterror(req, NT_STATUS_SHARING_VIOLATION);
 225                                 return tevent_req_post(req, ev);
 226                         }
 227                 }
 228
 229                 if (fsp->fh->fd == -1) {
 230                         /*
 231                          * This is actually a SETFILEINFO on a directory
 232                          * handle (returned from an NT SMB). NT5.0 seems
 233                          * to do this call. JRA.
 234                          */
 235                         if (INFO_LEVEL_IS_UNIX(file_info_level)) {
 236                                 /* Always do lstat for UNIX calls. */
 237                                 if (SMB_VFS_LSTAT(conn, fsp->fsp_name)) {
 238                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 239                                                  "SMB_VFS_LSTAT of %s failed "
 240                                                  "(%s)\n", fsp_str_dbg(fsp),
 241                                                  strerror(errno)));
 242                                         status = map_nt_error_from_unix(errno);
 243                                         tevent_req_nterror(req, status);
 244                                         return tevent_req_post(req, ev);
 245                                 }
 246                         } else {
 247                                 if (SMB_VFS_STAT(conn, fsp->fsp_name) != 0) {
 248                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 249                                                  "fileinfo of %s failed (%s)\n",
 250                                                  fsp_str_dbg(fsp),
 251                                                  strerror(errno)));
 252                                         status = map_nt_error_from_unix(errno);
 253                                         tevent_req_nterror(req, status);
 254                                         return tevent_req_post(req, ev);
 255                                 }
 256                         }
 257                 } else if (fsp->print_file) {
 258                         /*
 259                          * Doing a DELETE_ON_CLOSE should cancel a print job.
 260                          */
 261                         if ((file_info_level == SMB_SET_FILE_DISPOSITION_INFO)
 262                             && in_input_buffer.length >= 1
 263                             && CVAL(in_input_buffer.data,0)) {
 264                                 fsp->fh->private_options |= NTCREATEX_OPTIONS_PRIVATE_DELETE_ON_CLOSE;
 265
 266                                 DEBUG(3,("smbd_smb2_setinfo_send: "
 267                                          "Cancelling print job (%s)\n",
 268                                          fsp_str_dbg(fsp)));
 269
 270                                 tevent_req_done(req);
 271                                 return tevent_req_post(req, ev);
 272                         } else {
 273                                 tevent_req_nterror(req,
 274                                         NT_STATUS_OBJECT_PATH_INVALID);
 275                                 return tevent_req_post(req, ev);
 276                         }
 277                 } else {
 278                         /*
 279                          * Original code - this is an open file.
 280                          */
 281
 282                         if (SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
 283                                 DEBUG(3,("smbd_smb2_setinfo_send: fstat "
 284                                          "of fnum %d failed (%s)\n", fsp->fnum,
 285                                          strerror(errno)));
 286                                 status = map_nt_error_from_unix(errno);
 287                                 tevent_req_nterror(req, status);
 288                                 return tevent_req_post(req, ev);
 289                         }
 290                 }
 291
 292                 data = NULL;
 293                 data_size = in_input_buffer.length;
 294                 if (data_size > 0) {
 295                         data = (char *)SMB_MALLOC_ARRAY(char, data_size);
 296                         if (tevent_req_nomem(data, req)) {
 297                                 return tevent_req_post(req, ev);
 298                         }
 299                         memcpy(data, in_input_buffer.data, data_size);
 300                 }
 301
 302                 status = smbd_do_setfilepathinfo(conn, smbreq, state,
 303                                                  file_info_level,
 304                                                  fsp,
 305                                                  fsp->fsp_name,
 306                                                  &data,
 307                                                  data_size,
 308                                                  &ret_size);
 309                 SAFE_FREE(data);
 310                 if (!NT_STATUS_IS_OK(status)) {
 311                         if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
 312                                 status = NT_STATUS_INVALID_INFO_CLASS;
 313                         }
 314                         tevent_req_nterror(req, status);
 315                         return tevent_req_post(req, ev);
 316                 }
 317                 break;
 318         }
 319
 320         case 0x03:/* SMB2_SETINFO_SECURITY */
 321         {
 322                 if (!CAN_WRITE(conn)) {
 323                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 324                         return tevent_req_post(req, ev);
 325                 }
 326
 327                 status = set_sd(fsp,
 328                                 in_input_buffer.data,
 329                                 in_input_buffer.length,
 330                                 in_additional_information);
 331                 if (!NT_STATUS_IS_OK(status)) {
 332                         tevent_req_nterror(req, status);
 333                         return tevent_req_post(req, ev);
 334                 }
 335                 break;
 336         }
 337
 338         default:
 339                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 340                 return tevent_req_post(req, ev);
 341         }
 342
 343         tevent_req_done(req);
 344         return tevent_req_post(req, ev);
 345 }
 346
 347 static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req)
 348 {
 349         NTSTATUS status;
 350
 351         if (tevent_req_is_nterror(req, &status)) {
 352                 tevent_req_received(req);
 353                 return status;
 354         }
 355
 356         tevent_req_received(req);
 357         return NT_STATUS_OK;
 358 }