source3/smbd/smb2_setinfo.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Core SMB2 server
   4
   5    Copyright (C) Stefan Metzmacher 2009
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "smbd/globals.h"
  23 #include "../source4/libcli/smb2/smb2_constants.h"
  24
  25 static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
  26                                                  struct tevent_context *ev,
  27                                                  struct smbd_smb2_request *smb2req,
  28                                                  uint8_t in_info_type,
  29                                                  uint8_t in_file_info_class,
  30                                                  DATA_BLOB in_input_buffer,
  31                                                  uint32_t in_additional_information,
  32                                                  uint64_t in_file_id_volatile);
  33 static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req);
  34
  35 static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq);
  36 NTSTATUS smbd_smb2_request_process_setinfo(struct smbd_smb2_request *req)
  37 {
  38         const uint8_t *inhdr;
  39         const uint8_t *inbody;
  40         int i = req->current_idx;
  41         size_t expected_body_size = 0x21;
  42         size_t body_size;
  43         uint8_t in_info_type;
  44         uint8_t in_file_info_class;
  45         uint16_t in_input_buffer_offset;
  46         uint32_t in_input_buffer_length;
  47         DATA_BLOB in_input_buffer;
  48         uint32_t in_additional_information;
  49         uint64_t in_file_id_persistent;
  50         uint64_t in_file_id_volatile;
  51         struct tevent_req *subreq;
  52
  53         inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
  54         if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
  55                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  56         }
  57
  58         inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
  59
  60         body_size = SVAL(inbody, 0x00);
  61         if (body_size != expected_body_size) {
  62                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  63         }
  64
  65         in_info_type                    = CVAL(inbody, 0x02);
  66         in_file_info_class              = CVAL(inbody, 0x03);
  67         in_input_buffer_length          = IVAL(inbody, 0x04);
  68         in_input_buffer_offset          = SVAL(inbody, 0x08);
  69         /* 0x0A 2 bytes reserved */
  70         in_additional_information       = IVAL(inbody, 0x0C);
  71         in_file_id_persistent           = BVAL(inbody, 0x10);
  72         in_file_id_volatile             = BVAL(inbody, 0x18);
  73
  74         if (in_input_buffer_offset == 0 && in_input_buffer_length == 0) {
  75                 /* This is ok */
  76         } else if (in_input_buffer_offset !=
  77                    (SMB2_HDR_BODY + (body_size & 0xFFFFFFFE))) {
  78                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  79         }
  80
  81         if (in_input_buffer_length > req->in.vector[i+2].iov_len) {
  82                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  83         }
  84
  85         in_input_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
  86         in_input_buffer.length = in_input_buffer_length;
  87
  88         if (req->compat_chain_fsp) {
  89                 /* skip check */
  90         } else if (in_file_id_persistent != 0) {
  91                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
  92         }
  93
  94         subreq = smbd_smb2_setinfo_send(req,
  95                                         req->conn->smb2.event_ctx,
  96                                         req,
  97                                         in_info_type,
  98                                         in_file_info_class,
  99                                         in_input_buffer,
 100                                         in_additional_information,
 101                                         in_file_id_volatile);
 102         if (subreq == NULL) {
 103                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 104         }
 105         tevent_req_set_callback(subreq, smbd_smb2_request_setinfo_done, req);
 106
 107         if (tevent_req_is_in_progress(subreq)) {
 108                 return smbd_smb2_request_pending_queue(req);
 109         }
 110
 111         return NT_STATUS_OK;
 112 }
 113
 114 static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq)
 115 {
 116         struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
 117                                         struct smbd_smb2_request);
 118         DATA_BLOB outbody;
 119         NTSTATUS status;
 120         NTSTATUS error; /* transport error */
 121
 122         status = smbd_smb2_setinfo_recv(subreq);
 123         TALLOC_FREE(subreq);
 124         if (!NT_STATUS_IS_OK(status)) {
 125                 error = smbd_smb2_request_error(req, status);
 126                 if (!NT_STATUS_IS_OK(error)) {
 127                         smbd_server_connection_terminate(req->conn,
 128                                                          nt_errstr(error));
 129                         return;
 130                 }
 131                 return;
 132         }
 133
 134         outbody = data_blob_talloc(req->out.vector, NULL, 0x02);
 135         if (outbody.data == NULL) {
 136                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 137                 if (!NT_STATUS_IS_OK(error)) {
 138                         smbd_server_connection_terminate(req->conn,
 139                                                          nt_errstr(error));
 140                         return;
 141                 }
 142                 return;
 143         }
 144
 145         SSVAL(outbody.data, 0x00, 0x02);        /* struct size */
 146
 147         error = smbd_smb2_request_done(req, outbody, NULL);
 148         if (!NT_STATUS_IS_OK(error)) {
 149                 smbd_server_connection_terminate(req->conn,
 150                                                  nt_errstr(error));
 151                 return;
 152         }
 153 }
 154
 155 struct smbd_smb2_setinfo_state {
 156         struct smbd_smb2_request *smb2req;
 157 };
 158
 159 static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
 160                                                  struct tevent_context *ev,
 161                                                  struct smbd_smb2_request *smb2req,
 162                                                  uint8_t in_info_type,
 163                                                  uint8_t in_file_info_class,
 164                                                  DATA_BLOB in_input_buffer,
 165                                                  uint32_t in_additional_information,
 166                                                  uint64_t in_file_id_volatile)
 167 {
 168         struct tevent_req *req;
 169         struct smbd_smb2_setinfo_state *state;
 170         struct smb_request *smbreq;
 171         connection_struct *conn = smb2req->tcon->compat_conn;
 172         files_struct *fsp;
 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                 NTSTATUS status;
 216
 217
 218                 file_info_level = in_file_info_class + 1000;
 219                 if (file_info_level == SMB_FILE_RENAME_INFORMATION) {
 220                         file_info_level = 0xFF00 + in_file_info_class;
 221                 }
 222
 223                 if (fsp->is_directory || fsp->fh->fd == -1) {
 224                         /*
 225                          * This is actually a SETFILEINFO on a directory
 226                          * handle (returned from an NT SMB). NT5.0 seems
 227                          * to do this call. JRA.
 228                          */
 229                         if (INFO_LEVEL_IS_UNIX(file_info_level)) {
 230                                 /* Always do lstat for UNIX calls. */
 231                                 if (SMB_VFS_LSTAT(conn, fsp->fsp_name)) {
 232                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 233                                                  "SMB_VFS_LSTAT of %s failed "
 234                                                  "(%s)\n", 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                         } else {
 241                                 if (SMB_VFS_STAT(conn, fsp->fsp_name) != 0) {
 242                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 243                                                  "fileinfo of %s failed (%s)\n",
 244                                                  fsp_str_dbg(fsp),
 245                                                  strerror(errno)));
 246                                         status = map_nt_error_from_unix(errno);
 247                                         tevent_req_nterror(req, status);
 248                                         return tevent_req_post(req, ev);
 249                                 }
 250                         }
 251                 } else if (fsp->print_file) {
 252                         /*
 253                          * Doing a DELETE_ON_CLOSE should cancel a print job.
 254                          */
 255                         if ((file_info_level == SMB_SET_FILE_DISPOSITION_INFO)
 256                             && in_input_buffer.length >= 1
 257                             && CVAL(in_input_buffer.data,0)) {
 258                                 fsp->fh->private_options |= FILE_DELETE_ON_CLOSE;
 259
 260                                 DEBUG(3,("smbd_smb2_setinfo_send: "
 261                                          "Cancelling print job (%s)\n",
 262                                          fsp_str_dbg(fsp)));
 263
 264                                 tevent_req_done(req);
 265                                 return tevent_req_post(req, ev);
 266                         } else {
 267                                 tevent_req_nterror(req,
 268                                         NT_STATUS_OBJECT_PATH_INVALID);
 269                                 return tevent_req_post(req, ev);
 270                         }
 271                 } else {
 272                         /*
 273                          * Original code - this is an open file.
 274                          */
 275
 276                         if (SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
 277                                 DEBUG(3,("smbd_smb2_setinfo_send: fstat "
 278                                          "of fnum %d failed (%s)\n", fsp->fnum,
 279                                          strerror(errno)));
 280                                 status = map_nt_error_from_unix(errno);
 281                                 tevent_req_nterror(req, status);
 282                                 return tevent_req_post(req, ev);
 283                         }
 284                 }
 285
 286                 data = NULL;
 287                 data_size = in_input_buffer.length;
 288                 if (data_size > 0) {
 289                         data = (char *)SMB_MALLOC_ARRAY(char, data_size);
 290                         if (tevent_req_nomem(data, req)) {
 291
 292                         }
 293                         memcpy(data, in_input_buffer.data, data_size);
 294                 }
 295
 296                 status = smbd_do_setfilepathinfo(conn, smbreq, state,
 297                                                  file_info_level,
 298                                                  fsp,
 299                                                  fsp->fsp_name,
 300                                                  &data,
 301                                                  data_size,
 302                                                  &ret_size);
 303                 SAFE_FREE(data);
 304                 if (!NT_STATUS_IS_OK(status)) {
 305                         if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
 306                                 status = NT_STATUS_INVALID_INFO_CLASS;
 307                         }
 308                         tevent_req_nterror(req, status);
 309                         return tevent_req_post(req, ev);
 310                 }
 311                 break;
 312         }
 313
 314         default:
 315                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 316                 return tevent_req_post(req, ev);
 317         }
 318
 319         tevent_req_done(req);
 320         return tevent_req_post(req, ev);
 321 }
 322
 323 static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req)
 324 {
 325         NTSTATUS status;
 326
 327         if (tevent_req_is_nterror(req, &status)) {
 328                 tevent_req_received(req);
 329                 return status;
 330         }
 331
 332         tevent_req_received(req);
 333         return NT_STATUS_OK;
 334 }