source3/smbd/smb2_getinfo.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_getinfo_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                                                  uint32_t in_output_buffer_length,
  31                                                  DATA_BLOB in_input_buffer,
  32                                                  uint32_t in_additional_information,
  33                                                  uint32_t in_flags,
  34                                                  uint64_t in_file_id_volatile);
  35 static NTSTATUS smbd_smb2_getinfo_recv(struct tevent_req *req,
  36                                        TALLOC_CTX *mem_ctx,
  37                                        DATA_BLOB *out_output_buffer);
  38
  39 static void smbd_smb2_request_getinfo_done(struct tevent_req *subreq);
  40 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req)
  41 {
  42         const uint8_t *inhdr;
  43         const uint8_t *inbody;
  44         int i = req->current_idx;
  45         size_t expected_body_size = 0x29;
  46         size_t body_size;
  47         uint8_t in_info_type;
  48         uint8_t in_file_info_class;
  49         uint32_t in_output_buffer_length;
  50         uint16_t in_input_buffer_offset;
  51         uint32_t in_input_buffer_length;
  52         DATA_BLOB in_input_buffer;
  53         uint32_t in_additional_information;
  54         uint32_t in_flags;
  55         uint64_t in_file_id_persistent;
  56         uint64_t in_file_id_volatile;
  57         struct tevent_req *subreq;
  58
  59         inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
  60         if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
  61                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  62         }
  63
  64         inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
  65
  66         body_size = SVAL(inbody, 0x00);
  67         if (body_size != expected_body_size) {
  68                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  69         }
  70
  71         in_info_type                    = CVAL(inbody, 0x02);
  72         in_file_info_class              = CVAL(inbody, 0x03);
  73         in_output_buffer_length         = IVAL(inbody, 0x04);
  74         in_input_buffer_offset          = SVAL(inbody, 0x08);
  75         /* 0x0A 2 bytes reserved */
  76         in_input_buffer_length          = IVAL(inbody, 0x0C);
  77         in_additional_information       = IVAL(inbody, 0x10);
  78         in_flags                        = IVAL(inbody, 0x14);
  79         in_file_id_persistent           = BVAL(inbody, 0x18);
  80         in_file_id_volatile             = BVAL(inbody, 0x20);
  81
  82         if (in_input_buffer_offset == 0 && in_input_buffer_length == 0) {
  83                 /* This is ok */
  84         } else if (in_input_buffer_offset !=
  85                    (SMB2_HDR_BODY + (body_size & 0xFFFFFFFE))) {
  86                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  87         }
  88
  89         if (in_input_buffer_length > req->in.vector[i+2].iov_len) {
  90                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  91         }
  92
  93         in_input_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
  94         in_input_buffer.length = in_input_buffer_length;
  95
  96         if (req->compat_chain_fsp) {
  97                 /* skip check */
  98         } else if (in_file_id_persistent != 0) {
  99                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
 100         }
 101
 102         subreq = smbd_smb2_getinfo_send(req,
 103                                         req->sconn->smb2.event_ctx,
 104                                         req,
 105                                         in_info_type,
 106                                         in_file_info_class,
 107                                         in_output_buffer_length,
 108                                         in_input_buffer,
 109                                         in_additional_information,
 110                                         in_flags,
 111                                         in_file_id_volatile);
 112         if (subreq == NULL) {
 113                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 114         }
 115         tevent_req_set_callback(subreq, smbd_smb2_request_getinfo_done, req);
 116
 117         return smbd_smb2_request_pending_queue(req, subreq);
 118 }
 119
 120 static void smbd_smb2_request_getinfo_done(struct tevent_req *subreq)
 121 {
 122         struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
 123                                         struct smbd_smb2_request);
 124         int i = req->current_idx;
 125         uint8_t *outhdr;
 126         DATA_BLOB outbody;
 127         DATA_BLOB outdyn;
 128         uint16_t out_output_buffer_offset;
 129         DATA_BLOB out_output_buffer = data_blob_null;
 130         NTSTATUS status;
 131         NTSTATUS error; /* transport error */
 132
 133         status = smbd_smb2_getinfo_recv(subreq,
 134                                         req,
 135                                         &out_output_buffer);
 136         TALLOC_FREE(subreq);
 137         if (!NT_STATUS_IS_OK(status)) {
 138                 error = smbd_smb2_request_error(req, status);
 139                 if (!NT_STATUS_IS_OK(error)) {
 140                         smbd_server_connection_terminate(req->sconn,
 141                                                          nt_errstr(error));
 142                         return;
 143                 }
 144                 return;
 145         }
 146
 147         out_output_buffer_offset = SMB2_HDR_BODY + 0x08;
 148
 149         outhdr = (uint8_t *)req->out.vector[i].iov_base;
 150
 151         outbody = data_blob_talloc(req->out.vector, NULL, 0x08);
 152         if (outbody.data == NULL) {
 153                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 154                 if (!NT_STATUS_IS_OK(error)) {
 155                         smbd_server_connection_terminate(req->sconn,
 156                                                          nt_errstr(error));
 157                         return;
 158                 }
 159                 return;
 160         }
 161
 162         SSVAL(outbody.data, 0x00, 0x08 + 1);    /* struct size */
 163         SSVAL(outbody.data, 0x02,
 164               out_output_buffer_offset);        /* output buffer offset */
 165         SIVAL(outbody.data, 0x04,
 166               out_output_buffer.length);        /* output buffer length */
 167
 168         outdyn = out_output_buffer;
 169
 170         error = smbd_smb2_request_done(req, outbody, &outdyn);
 171         if (!NT_STATUS_IS_OK(error)) {
 172                 smbd_server_connection_terminate(req->sconn,
 173                                                  nt_errstr(error));
 174                 return;
 175         }
 176 }
 177
 178 struct smbd_smb2_getinfo_state {
 179         struct smbd_smb2_request *smb2req;
 180         NTSTATUS status;
 181         DATA_BLOB out_output_buffer;
 182 };
 183
 184 static struct tevent_req *smbd_smb2_getinfo_send(TALLOC_CTX *mem_ctx,
 185                                                  struct tevent_context *ev,
 186                                                  struct smbd_smb2_request *smb2req,
 187                                                  uint8_t in_info_type,
 188                                                  uint8_t in_file_info_class,
 189                                                  uint32_t in_output_buffer_length,
 190                                                  DATA_BLOB in_input_buffer,
 191                                                  uint32_t in_additional_information,
 192                                                  uint32_t in_flags,
 193                                                  uint64_t in_file_id_volatile)
 194 {
 195         struct tevent_req *req;
 196         struct smbd_smb2_getinfo_state *state;
 197         struct smb_request *smbreq;
 198         connection_struct *conn = smb2req->tcon->compat_conn;
 199         files_struct *fsp;
 200
 201         req = tevent_req_create(mem_ctx, &state,
 202                                 struct smbd_smb2_getinfo_state);
 203         if (req == NULL) {
 204                 return NULL;
 205         }
 206         state->smb2req = smb2req;
 207         state->status = NT_STATUS_INTERNAL_ERROR;
 208         state->out_output_buffer = data_blob_null;
 209
 210         DEBUG(10,("smbd_smb2_getinfo_send: file_id[0x%016llX]\n",
 211                   (unsigned long long)in_file_id_volatile));
 212
 213         smbreq = smbd_smb2_fake_smb_request(smb2req);
 214         if (tevent_req_nomem(smbreq, req)) {
 215                 return tevent_req_post(req, ev);
 216         }
 217
 218         fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
 219         if (fsp == NULL) {
 220                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 221                 return tevent_req_post(req, ev);
 222         }
 223         if (conn != fsp->conn) {
 224                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 225                 return tevent_req_post(req, ev);
 226         }
 227         if (smb2req->session->vuid != fsp->vuid) {
 228                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 229                 return tevent_req_post(req, ev);
 230         }
 231
 232         if (IS_IPC(conn)) {
 233                 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
 234                 return tevent_req_post(req, ev);
 235         }
 236
 237         switch (in_info_type) {
 238         case 0x01:/* SMB2_GETINFO_FILE */
 239         {
 240                 uint16_t file_info_level;
 241                 char *data = NULL;
 242                 unsigned int data_size = 0;
 243                 bool delete_pending = false;
 244                 struct timespec write_time_ts;
 245                 struct file_id fileid;
 246                 struct ea_list *ea_list = NULL;
 247                 int lock_data_count = 0;
 248                 char *lock_data = NULL;
 249                 bool ms_dfs_link = false;
 250                 NTSTATUS status;
 251
 252                 ZERO_STRUCT(write_time_ts);
 253
 254                 switch (in_file_info_class) {
 255                 case 0x0F:/* RAW_FILEINFO_SMB2_ALL_EAS */
 256                         file_info_level = 0xFF00 | in_file_info_class;
 257                         break;
 258
 259                 case 0x12:/* RAW_FILEINFO_SMB2_ALL_INFORMATION */
 260                         file_info_level = 0xFF00 | in_file_info_class;
 261                         break;
 262
 263                 default:
 264                         /* the levels directly map to the passthru levels */
 265                         file_info_level = in_file_info_class + 1000;
 266                         break;
 267                 }
 268
 269                 if (fsp->fake_file_handle) {
 270                         /*
 271                          * This is actually for the QUOTA_FAKE_FILE --metze
 272                          */
 273
 274                         /* We know this name is ok, it's already passed the checks. */
 275
 276                 } else if (fsp && (fsp->is_directory || fsp->fh->fd == -1)) {
 277                         /*
 278                          * This is actually a QFILEINFO on a directory
 279                          * handle (returned from an NT SMB). NT5.0 seems
 280                          * to do this call. JRA.
 281                          */
 282
 283                         if (INFO_LEVEL_IS_UNIX(file_info_level)) {
 284                                 /* Always do lstat for UNIX calls. */
 285                                 if (SMB_VFS_LSTAT(conn, fsp->fsp_name)) {
 286                                         DEBUG(3,("smbd_smb2_getinfo_send: "
 287                                                  "SMB_VFS_LSTAT of %s failed "
 288                                                  "(%s)\n", fsp_str_dbg(fsp),
 289                                                  strerror(errno)));
 290                                         status = map_nt_error_from_unix(errno);
 291                                         tevent_req_nterror(req, status);
 292                                         return tevent_req_post(req, ev);
 293                                 }
 294                         } else if (SMB_VFS_STAT(conn, fsp->fsp_name)) {
 295                                 DEBUG(3,("smbd_smb2_getinfo_send: "
 296                                          "SMB_VFS_STAT of %s failed (%s)\n",
 297                                          fsp_str_dbg(fsp),
 298                                          strerror(errno)));
 299                                 status = map_nt_error_from_unix(errno);
 300                                 tevent_req_nterror(req, status);
 301                                 return tevent_req_post(req, ev);
 302                         }
 303
 304                         fileid = vfs_file_id_from_sbuf(conn,
 305                                                        &fsp->fsp_name->st);
 306                         get_file_infos(fileid, &delete_pending, &write_time_ts);
 307                 } else {
 308                         /*
 309                          * Original code - this is an open file.
 310                          */
 311
 312                         if (SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
 313                                 DEBUG(3, ("smbd_smb2_getinfo_send: "
 314                                           "fstat of fnum %d failed (%s)\n",
 315                                           fsp->fnum, strerror(errno)));
 316                                 status = map_nt_error_from_unix(errno);
 317                                 tevent_req_nterror(req, status);
 318                                 return tevent_req_post(req, ev);
 319                         }
 320                         fileid = vfs_file_id_from_sbuf(conn,
 321                                                        &fsp->fsp_name->st);
 322                         get_file_infos(fileid, &delete_pending, &write_time_ts);
 323                 }
 324
 325                 status = smbd_do_qfilepathinfo(conn, state,
 326                                                file_info_level,
 327                                                fsp,
 328                                                fsp->fsp_name,
 329                                                delete_pending,
 330                                                write_time_ts,
 331                                                ms_dfs_link,
 332                                                ea_list,
 333                                                lock_data_count,
 334                                                lock_data,
 335                                                STR_UNICODE,
 336                                                in_output_buffer_length,
 337                                                &data,
 338                                                &data_size);
 339                 if (!NT_STATUS_IS_OK(status)) {
 340                         SAFE_FREE(data);
 341                         if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
 342                                 status = NT_STATUS_INVALID_INFO_CLASS;
 343                         }
 344                         tevent_req_nterror(req, status);
 345                         return tevent_req_post(req, ev);
 346                 }
 347                 if (data_size > 0) {
 348                         state->out_output_buffer = data_blob_talloc(state,
 349                                                                     data,
 350                                                                     data_size);
 351                         SAFE_FREE(data);
 352                         if (tevent_req_nomem(state->out_output_buffer.data, req)) {
 353                                 return tevent_req_post(req, ev);
 354                         }
 355                 }
 356                 SAFE_FREE(data);
 357                 break;
 358         }
 359
 360         case 0x02:/* SMB2_GETINFO_FS */
 361         {
 362                 uint16_t file_info_level;
 363                 char *data = NULL;
 364                 int data_size = 0;
 365                 NTSTATUS status;
 366
 367                 /* the levels directly map to the passthru levels */
 368                 file_info_level = in_file_info_class + 1000;
 369
 370                 status = smbd_do_qfsinfo(conn, state,
 371                                          file_info_level,
 372                                          STR_UNICODE,
 373                                          in_output_buffer_length,
 374                                          &data,
 375                                          &data_size);
 376                 if (!NT_STATUS_IS_OK(status)) {
 377                         SAFE_FREE(data);
 378                         if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
 379                                 status = NT_STATUS_INVALID_INFO_CLASS;
 380                         }
 381                         tevent_req_nterror(req, status);
 382                         return tevent_req_post(req, ev);
 383                 }
 384                 if (data_size > 0) {
 385                         state->out_output_buffer = data_blob_talloc(state,
 386                                                                     data,
 387                                                                     data_size);
 388                         SAFE_FREE(data);
 389                         if (tevent_req_nomem(state->out_output_buffer.data, req)) {
 390                                 return tevent_req_post(req, ev);
 391                         }
 392                 }
 393                 SAFE_FREE(data);
 394                 break;
 395         }
 396
 397         default:
 398                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 399                 return tevent_req_post(req, ev);
 400         }
 401
 402         tevent_req_done(req);
 403         return tevent_req_post(req, ev);
 404 }
 405
 406 static NTSTATUS smbd_smb2_getinfo_recv(struct tevent_req *req,
 407                                        TALLOC_CTX *mem_ctx,
 408                                        DATA_BLOB *out_output_buffer)
 409 {
 410         NTSTATUS status;
 411         struct smbd_smb2_getinfo_state *state = tevent_req_data(req,
 412                                                 struct smbd_smb2_getinfo_state);
 413
 414         if (tevent_req_is_nterror(req, &status)) {
 415                 tevent_req_received(req);
 416                 return status;
 417         }
 418
 419         *out_output_buffer = state->out_output_buffer;
 420         talloc_steal(mem_ctx, out_output_buffer->data);
 421
 422         tevent_req_received(req);
 423         return NT_STATUS_OK;
 424 }