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 "../libcli/smb/smb_common.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->sconn->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         return smbd_smb2_request_pending_queue(req, subreq);
 108 }
 109
 110 static void smbd_smb2_request_setinfo_done(struct tevent_req *subreq)
 111 {
 112         struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
 113                                         struct smbd_smb2_request);
 114         DATA_BLOB outbody;
 115         NTSTATUS status;
 116         NTSTATUS error; /* transport error */
 117
 118         status = smbd_smb2_setinfo_recv(subreq);
 119         TALLOC_FREE(subreq);
 120         if (!NT_STATUS_IS_OK(status)) {
 121                 error = smbd_smb2_request_error(req, status);
 122                 if (!NT_STATUS_IS_OK(error)) {
 123                         smbd_server_connection_terminate(req->sconn,
 124                                                          nt_errstr(error));
 125                         return;
 126                 }
 127                 return;
 128         }
 129
 130         outbody = data_blob_talloc(req->out.vector, NULL, 0x02);
 131         if (outbody.data == NULL) {
 132                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 133                 if (!NT_STATUS_IS_OK(error)) {
 134                         smbd_server_connection_terminate(req->sconn,
 135                                                          nt_errstr(error));
 136                         return;
 137                 }
 138                 return;
 139         }
 140
 141         SSVAL(outbody.data, 0x00, 0x02);        /* struct size */
 142
 143         error = smbd_smb2_request_done(req, outbody, NULL);
 144         if (!NT_STATUS_IS_OK(error)) {
 145                 smbd_server_connection_terminate(req->sconn,
 146                                                  nt_errstr(error));
 147                 return;
 148         }
 149 }
 150
 151 struct smbd_smb2_setinfo_state {
 152         struct smbd_smb2_request *smb2req;
 153 };
 154
 155 static struct tevent_req *smbd_smb2_setinfo_send(TALLOC_CTX *mem_ctx,
 156                                                  struct tevent_context *ev,
 157                                                  struct smbd_smb2_request *smb2req,
 158                                                  uint8_t in_info_type,
 159                                                  uint8_t in_file_info_class,
 160                                                  DATA_BLOB in_input_buffer,
 161                                                  uint32_t in_additional_information,
 162                                                  uint64_t in_file_id_volatile)
 163 {
 164         struct tevent_req *req;
 165         struct smbd_smb2_setinfo_state *state;
 166         struct smb_request *smbreq;
 167         connection_struct *conn = smb2req->tcon->compat_conn;
 168         files_struct *fsp;
 169
 170         req = tevent_req_create(mem_ctx, &state,
 171                                 struct smbd_smb2_setinfo_state);
 172         if (req == NULL) {
 173                 return NULL;
 174         }
 175         state->smb2req = smb2req;
 176
 177         DEBUG(10,("smbd_smb2_setinfo_send: file_id[0x%016llX]\n",
 178                   (unsigned long long)in_file_id_volatile));
 179
 180         smbreq = smbd_smb2_fake_smb_request(smb2req);
 181         if (tevent_req_nomem(smbreq, req)) {
 182                 return tevent_req_post(req, ev);
 183         }
 184
 185         fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
 186         if (fsp == NULL) {
 187                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 188                 return tevent_req_post(req, ev);
 189         }
 190         if (conn != fsp->conn) {
 191                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 192                 return tevent_req_post(req, ev);
 193         }
 194         if (smb2req->session->vuid != fsp->vuid) {
 195                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 196                 return tevent_req_post(req, ev);
 197         }
 198
 199         if (IS_IPC(conn)) {
 200                 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
 201                 return tevent_req_post(req, ev);
 202         }
 203
 204         switch (in_info_type) {
 205         case 0x01:/* SMB2_SETINFO_FILE */
 206         {
 207                 uint16_t file_info_level;
 208                 char *data;
 209                 int data_size;
 210                 int ret_size = 0;
 211                 NTSTATUS status;
 212
 213
 214                 file_info_level = in_file_info_class + 1000;
 215                 if (file_info_level == SMB_FILE_RENAME_INFORMATION) {
 216                         file_info_level = 0xFF00 + in_file_info_class;
 217                 }
 218
 219                 if (fsp->is_directory || fsp->fh->fd == -1) {
 220                         /*
 221                          * This is actually a SETFILEINFO on a directory
 222                          * handle (returned from an NT SMB). NT5.0 seems
 223                          * to do this call. JRA.
 224                          */
 225                         if (INFO_LEVEL_IS_UNIX(file_info_level)) {
 226                                 /* Always do lstat for UNIX calls. */
 227                                 if (SMB_VFS_LSTAT(conn, fsp->fsp_name)) {
 228                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 229                                                  "SMB_VFS_LSTAT of %s failed "
 230                                                  "(%s)\n", fsp_str_dbg(fsp),
 231                                                  strerror(errno)));
 232                                         status = map_nt_error_from_unix(errno);
 233                                         tevent_req_nterror(req, status);
 234                                         return tevent_req_post(req, ev);
 235                                 }
 236                         } else {
 237                                 if (SMB_VFS_STAT(conn, fsp->fsp_name) != 0) {
 238                                         DEBUG(3,("smbd_smb2_setinfo_send: "
 239                                                  "fileinfo of %s failed (%s)\n",
 240                                                  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                         }
 247                 } else if (fsp->print_file) {
 248                         /*
 249                          * Doing a DELETE_ON_CLOSE should cancel a print job.
 250                          */
 251                         if ((file_info_level == SMB_SET_FILE_DISPOSITION_INFO)
 252                             && in_input_buffer.length >= 1
 253                             && CVAL(in_input_buffer.data,0)) {
 254                                 fsp->fh->private_options |= FILE_DELETE_ON_CLOSE;
 255
 256                                 DEBUG(3,("smbd_smb2_setinfo_send: "
 257                                          "Cancelling print job (%s)\n",
 258                                          fsp_str_dbg(fsp)));
 259
 260                                 tevent_req_done(req);
 261                                 return tevent_req_post(req, ev);
 262                         } else {
 263                                 tevent_req_nterror(req,
 264                                         NT_STATUS_OBJECT_PATH_INVALID);
 265                                 return tevent_req_post(req, ev);
 266                         }
 267                 } else {
 268                         /*
 269                          * Original code - this is an open file.
 270                          */
 271
 272                         if (SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
 273                                 DEBUG(3,("smbd_smb2_setinfo_send: fstat "
 274                                          "of fnum %d failed (%s)\n", fsp->fnum,
 275                                          strerror(errno)));
 276                                 status = map_nt_error_from_unix(errno);
 277                                 tevent_req_nterror(req, status);
 278                                 return tevent_req_post(req, ev);
 279                         }
 280                 }
 281
 282                 data = NULL;
 283                 data_size = in_input_buffer.length;
 284                 if (data_size > 0) {
 285                         data = (char *)SMB_MALLOC_ARRAY(char, data_size);
 286                         if (tevent_req_nomem(data, req)) {
 287
 288                         }
 289                         memcpy(data, in_input_buffer.data, data_size);
 290                 }
 291
 292                 status = smbd_do_setfilepathinfo(conn, smbreq, state,
 293                                                  file_info_level,
 294                                                  fsp,
 295                                                  fsp->fsp_name,
 296                                                  &data,
 297                                                  data_size,
 298                                                  &ret_size);
 299                 SAFE_FREE(data);
 300                 if (!NT_STATUS_IS_OK(status)) {
 301                         if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
 302                                 status = NT_STATUS_INVALID_INFO_CLASS;
 303                         }
 304                         tevent_req_nterror(req, status);
 305                         return tevent_req_post(req, ev);
 306                 }
 307                 break;
 308         }
 309
 310         default:
 311                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 312                 return tevent_req_post(req, ev);
 313         }
 314
 315         tevent_req_done(req);
 316         return tevent_req_post(req, ev);
 317 }
 318
 319 static NTSTATUS smbd_smb2_setinfo_recv(struct tevent_req *req)
 320 {
 321         NTSTATUS status;
 322
 323         if (tevent_req_is_nterror(req, &status)) {
 324                 tevent_req_received(req);
 325                 return status;
 326         }
 327
 328         tevent_req_received(req);
 329         return NT_STATUS_OK;
 330 }