source3/smbd/smb2_getinfo.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_getinfo_send(TALLOC_CTX *mem_ctx,
  30                                                  struct tevent_context *ev,
  31                                                  struct smbd_smb2_request *smb2req,
  32                                                  uint8_t in_info_type,
  33                                                  uint8_t in_file_info_class,
  34                                                  uint32_t in_output_buffer_length,
  35                                                  DATA_BLOB in_input_buffer,
  36                                                  uint32_t in_additional_information,
  37                                                  uint32_t in_flags,
  38                                                  uint64_t in_file_id_volatile);
  39 static NTSTATUS smbd_smb2_getinfo_recv(struct tevent_req *req,
  40                                        TALLOC_CTX *mem_ctx,
  41                                        DATA_BLOB *out_output_buffer,
  42                                        NTSTATUS *p_call_status);
  43
  44 static void smbd_smb2_request_getinfo_done(struct tevent_req *subreq);
  45 NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req)
  46 {
  47         NTSTATUS status;
  48         const uint8_t *inbody;
  49         int i = req->current_idx;
  50         uint8_t in_info_type;
  51         uint8_t in_file_info_class;
  52         uint32_t in_output_buffer_length;
  53         uint16_t in_input_buffer_offset;
  54         uint32_t in_input_buffer_length;
  55         DATA_BLOB in_input_buffer;
  56         uint32_t in_additional_information;
  57         uint32_t in_flags;
  58         uint64_t in_file_id_persistent;
  59         uint64_t in_file_id_volatile;
  60         struct tevent_req *subreq;
  61
  62         status = smbd_smb2_request_verify_sizes(req, 0x29);
  63         if (!NT_STATUS_IS_OK(status)) {
  64                 return smbd_smb2_request_error(req, status);
  65         }
  66         inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
  67
  68         in_info_type                    = CVAL(inbody, 0x02);
  69         in_file_info_class              = CVAL(inbody, 0x03);
  70         in_output_buffer_length         = IVAL(inbody, 0x04);
  71         in_input_buffer_offset          = SVAL(inbody, 0x08);
  72         /* 0x0A 2 bytes reserved */
  73         in_input_buffer_length          = IVAL(inbody, 0x0C);
  74         in_additional_information       = IVAL(inbody, 0x10);
  75         in_flags                        = IVAL(inbody, 0x14);
  76         in_file_id_persistent           = BVAL(inbody, 0x18);
  77         in_file_id_volatile             = BVAL(inbody, 0x20);
  78
  79         if (in_input_buffer_offset == 0 && in_input_buffer_length == 0) {
  80                 /* This is ok */
  81         } else if (in_input_buffer_offset !=
  82                    (SMB2_HDR_BODY + req->in.vector[i+1].iov_len)) {
  83                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  84         }
  85
  86         if (in_input_buffer_length > req->in.vector[i+2].iov_len) {
  87                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  88         }
  89
  90         in_input_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
  91         in_input_buffer.length = in_input_buffer_length;
  92
  93         if (req->compat_chain_fsp) {
  94                 /* skip check */
  95         } else if (in_file_id_persistent != in_file_id_volatile) {
  96                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
  97         }
  98
  99         subreq = smbd_smb2_getinfo_send(req,
 100                                         req->sconn->smb2.event_ctx,
 101                                         req,
 102                                         in_info_type,
 103                                         in_file_info_class,
 104                                         in_output_buffer_length,
 105                                         in_input_buffer,
 106                                         in_additional_information,
 107                                         in_flags,
 108                                         in_file_id_volatile);
 109         if (subreq == NULL) {
 110                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 111         }
 112         tevent_req_set_callback(subreq, smbd_smb2_request_getinfo_done, req);
 113
 114         return smbd_smb2_request_pending_queue(req, subreq);
 115 }
 116
 117 static void smbd_smb2_request_getinfo_done(struct tevent_req *subreq)
 118 {
 119         struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
 120                                         struct smbd_smb2_request);
 121         int i = req->current_idx;
 122         uint8_t *outhdr;
 123         DATA_BLOB outbody;
 124         DATA_BLOB outdyn;
 125         uint16_t out_output_buffer_offset;
 126         DATA_BLOB out_output_buffer = data_blob_null;
 127         NTSTATUS status;
 128         NTSTATUS call_status = NT_STATUS_OK;
 129         NTSTATUS error; /* transport error */
 130
 131         status = smbd_smb2_getinfo_recv(subreq,
 132                                         req,
 133                                         &out_output_buffer,
 134                                         &call_status);
 135         TALLOC_FREE(subreq);
 136         if (!NT_STATUS_IS_OK(status)) {
 137                 error = smbd_smb2_request_error(req, status);
 138                 if (!NT_STATUS_IS_OK(error)) {
 139                         smbd_server_connection_terminate(req->sconn,
 140                                                          nt_errstr(error));
 141                         return;
 142                 }
 143                 return;
 144         }
 145
 146         if (!NT_STATUS_IS_OK(call_status)) {
 147                 /* Return a specific error with data. */
 148                 error = smbd_smb2_request_error_ex(req,
 149                                                 call_status,
 150                                                 &out_output_buffer,
 151                                                 __location__);
 152                 if (!NT_STATUS_IS_OK(error)) {
 153                         smbd_server_connection_terminate(req->sconn,
 154                                                          nt_errstr(error));
 155                         return;
 156                 }
 157                 return;
 158         }
 159
 160         out_output_buffer_offset = SMB2_HDR_BODY + 0x08;
 161
 162         outhdr = (uint8_t *)req->out.vector[i].iov_base;
 163
 164         outbody = data_blob_talloc(req->out.vector, NULL, 0x08);
 165         if (outbody.data == NULL) {
 166                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 167                 if (!NT_STATUS_IS_OK(error)) {
 168                         smbd_server_connection_terminate(req->sconn,
 169                                                          nt_errstr(error));
 170                         return;
 171                 }
 172                 return;
 173         }
 174
 175         SSVAL(outbody.data, 0x00, 0x08 + 1);    /* struct size */
 176         SSVAL(outbody.data, 0x02,
 177               out_output_buffer_offset);        /* output buffer offset */
 178         SIVAL(outbody.data, 0x04,
 179               out_output_buffer.length);        /* output buffer length */
 180
 181         outdyn = out_output_buffer;
 182
 183         error = smbd_smb2_request_done(req, outbody, &outdyn);
 184         if (!NT_STATUS_IS_OK(error)) {
 185                 smbd_server_connection_terminate(req->sconn,
 186                                                  nt_errstr(error));
 187                 return;
 188         }
 189 }
 190
 191 struct smbd_smb2_getinfo_state {
 192         struct smbd_smb2_request *smb2req;
 193         NTSTATUS status;
 194         DATA_BLOB out_output_buffer;
 195 };
 196
 197 static void smb2_ipc_getinfo(struct tevent_req *req,
 198                                 struct smbd_smb2_getinfo_state *state,
 199                                 struct tevent_context *ev,
 200                                 uint8_t in_info_type,
 201                                 uint8_t in_file_info_class)
 202 {
 203         /* We want to reply to SMB2_GETINFO_FILE
 204            with a class of SMB2_FILE_STANDARD_INFO as
 205            otherwise a Win7 client issues this request
 206            twice (2xroundtrips) if we return NOT_SUPPORTED.
 207            NB. We do the same for SMB1 in call_trans2qpipeinfo() */
 208
 209         if (in_info_type == 0x01 && /* SMB2_GETINFO_FILE */
 210                         in_file_info_class == 0x05) { /* SMB2_FILE_STANDARD_INFO */
 211                 state->out_output_buffer = data_blob_talloc(state,
 212                                                 NULL, 24);
 213                 if (tevent_req_nomem(state->out_output_buffer.data, req)) {
 214                         return;
 215                 }
 216
 217                 memset(state->out_output_buffer.data,0,24);
 218                 SOFF_T(state->out_output_buffer.data,0,4096LL);
 219                 SIVAL(state->out_output_buffer.data,16,1);
 220                 SIVAL(state->out_output_buffer.data,20,1);
 221                 tevent_req_done(req);
 222         } else {
 223                 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
 224         }
 225 }
 226
 227 static struct tevent_req *smbd_smb2_getinfo_send(TALLOC_CTX *mem_ctx,
 228                                                  struct tevent_context *ev,
 229                                                  struct smbd_smb2_request *smb2req,
 230                                                  uint8_t in_info_type,
 231                                                  uint8_t in_file_info_class,
 232                                                  uint32_t in_output_buffer_length,
 233                                                  DATA_BLOB in_input_buffer,
 234                                                  uint32_t in_additional_information,
 235                                                  uint32_t in_flags,
 236                                                  uint64_t in_file_id_volatile)
 237 {
 238         struct tevent_req *req;
 239         struct smbd_smb2_getinfo_state *state;
 240         struct smb_request *smbreq;
 241         connection_struct *conn = smb2req->tcon->compat_conn;
 242         files_struct *fsp;
 243         NTSTATUS status;
 244
 245         req = tevent_req_create(mem_ctx, &state,
 246                                 struct smbd_smb2_getinfo_state);
 247         if (req == NULL) {
 248                 return NULL;
 249         }
 250         state->smb2req = smb2req;
 251         state->status = NT_STATUS_OK;
 252         state->out_output_buffer = data_blob_null;
 253
 254         DEBUG(10,("smbd_smb2_getinfo_send: file_id[0x%016llX]\n",
 255                   (unsigned long long)in_file_id_volatile));
 256
 257         smbreq = smbd_smb2_fake_smb_request(smb2req);
 258         if (tevent_req_nomem(smbreq, req)) {
 259                 return tevent_req_post(req, ev);
 260         }
 261
 262         fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
 263         if (fsp == NULL) {
 264                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 265                 return tevent_req_post(req, ev);
 266         }
 267         if (conn != fsp->conn) {
 268                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 269                 return tevent_req_post(req, ev);
 270         }
 271         if (smb2req->session->vuid != fsp->vuid) {
 272                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 273                 return tevent_req_post(req, ev);
 274         }
 275
 276         if (IS_IPC(conn)) {
 277                 smb2_ipc_getinfo(req, state, ev,
 278                         in_info_type, in_file_info_class);
 279                 return tevent_req_post(req, ev);
 280         }
 281
 282         switch (in_info_type) {
 283         case 0x01:/* SMB2_GETINFO_FILE */
 284         {
 285                 uint16_t file_info_level;
 286                 char *data = NULL;
 287                 unsigned int data_size = 0;
 288                 bool delete_pending = false;
 289                 struct timespec write_time_ts;
 290                 struct file_id fileid;
 291                 struct ea_list *ea_list = NULL;
 292                 int lock_data_count = 0;
 293                 char *lock_data = NULL;
 294
 295                 ZERO_STRUCT(write_time_ts);
 296
 297                 switch (in_file_info_class) {
 298                 case 0x0F:/* RAW_FILEINFO_SMB2_ALL_EAS */
 299                         file_info_level = 0xFF00 | in_file_info_class;
 300                         break;
 301
 302                 case 0x12:/* RAW_FILEINFO_SMB2_ALL_INFORMATION */
 303                         file_info_level = 0xFF00 | in_file_info_class;
 304                         break;
 305
 306                 default:
 307                         /* the levels directly map to the passthru levels */
 308                         file_info_level = in_file_info_class + 1000;
 309                         break;
 310                 }
 311
 312                 if (fsp->fake_file_handle) {
 313                         /*
 314                          * This is actually for the QUOTA_FAKE_FILE --metze
 315                          */
 316
 317                         /* We know this name is ok, it's already passed the checks. */
 318
 319                 } else if (fsp && fsp->fh->fd == -1) {
 320                         /*
 321                          * This is actually a QFILEINFO on a directory
 322                          * handle (returned from an NT SMB). NT5.0 seems
 323                          * to do this call. JRA.
 324                          */
 325
 326                         if (INFO_LEVEL_IS_UNIX(file_info_level)) {
 327                                 /* Always do lstat for UNIX calls. */
 328                                 if (SMB_VFS_LSTAT(conn, fsp->fsp_name)) {
 329                                         DEBUG(3,("smbd_smb2_getinfo_send: "
 330                                                  "SMB_VFS_LSTAT of %s failed "
 331                                                  "(%s)\n", fsp_str_dbg(fsp),
 332                                                  strerror(errno)));
 333                                         status = map_nt_error_from_unix(errno);
 334                                         tevent_req_nterror(req, status);
 335                                         return tevent_req_post(req, ev);
 336                                 }
 337                         } else if (SMB_VFS_STAT(conn, fsp->fsp_name)) {
 338                                 DEBUG(3,("smbd_smb2_getinfo_send: "
 339                                          "SMB_VFS_STAT of %s failed (%s)\n",
 340                                          fsp_str_dbg(fsp),
 341                                          strerror(errno)));
 342                                 status = map_nt_error_from_unix(errno);
 343                                 tevent_req_nterror(req, status);
 344                                 return tevent_req_post(req, ev);
 345                         }
 346
 347                         fileid = vfs_file_id_from_sbuf(conn,
 348                                                        &fsp->fsp_name->st);
 349                         get_file_infos(fileid, fsp->name_hash,
 350                                 &delete_pending, &write_time_ts);
 351                 } else {
 352                         /*
 353                          * Original code - this is an open file.
 354                          */
 355
 356                         if (SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
 357                                 DEBUG(3, ("smbd_smb2_getinfo_send: "
 358                                           "fstat of fnum %d failed (%s)\n",
 359                                           fsp->fnum, strerror(errno)));
 360                                 status = map_nt_error_from_unix(errno);
 361                                 tevent_req_nterror(req, status);
 362                                 return tevent_req_post(req, ev);
 363                         }
 364                         fileid = vfs_file_id_from_sbuf(conn,
 365                                                        &fsp->fsp_name->st);
 366                         get_file_infos(fileid, fsp->name_hash,
 367                                 &delete_pending, &write_time_ts);
 368                 }
 369
 370                 status = smbd_do_qfilepathinfo(conn, state,
 371                                                file_info_level,
 372                                                fsp,
 373                                                fsp->fsp_name,
 374                                                delete_pending,
 375                                                write_time_ts,
 376                                                ea_list,
 377                                                lock_data_count,
 378                                                lock_data,
 379                                                STR_UNICODE,
 380                                                in_output_buffer_length,
 381                                                &data,
 382                                                &data_size);
 383                 if (!NT_STATUS_IS_OK(status)) {
 384                         SAFE_FREE(data);
 385                         if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
 386                                 status = NT_STATUS_INVALID_INFO_CLASS;
 387                         }
 388                         tevent_req_nterror(req, status);
 389                         return tevent_req_post(req, ev);
 390                 }
 391                 if (data_size > 0) {
 392                         state->out_output_buffer = data_blob_talloc(state,
 393                                                                     data,
 394                                                                     data_size);
 395                         SAFE_FREE(data);
 396                         if (tevent_req_nomem(state->out_output_buffer.data, req)) {
 397                                 return tevent_req_post(req, ev);
 398                         }
 399                 }
 400                 SAFE_FREE(data);
 401                 break;
 402         }
 403
 404         case 0x02:/* SMB2_GETINFO_FS */
 405         {
 406                 uint16_t file_info_level;
 407                 char *data = NULL;
 408                 int data_size = 0;
 409
 410                 /* the levels directly map to the passthru levels */
 411                 file_info_level = in_file_info_class + 1000;
 412
 413                 status = smbd_do_qfsinfo(conn, state,
 414                                          file_info_level,
 415                                          STR_UNICODE,
 416                                          in_output_buffer_length,
 417                                          &data,
 418                                          &data_size);
 419                 if (!NT_STATUS_IS_OK(status)) {
 420                         SAFE_FREE(data);
 421                         if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
 422                                 status = NT_STATUS_INVALID_INFO_CLASS;
 423                         }
 424                         tevent_req_nterror(req, status);
 425                         return tevent_req_post(req, ev);
 426                 }
 427                 if (data_size > 0) {
 428                         state->out_output_buffer = data_blob_talloc(state,
 429                                                                     data,
 430                                                                     data_size);
 431                         SAFE_FREE(data);
 432                         if (tevent_req_nomem(state->out_output_buffer.data, req)) {
 433                                 return tevent_req_post(req, ev);
 434                         }
 435                 }
 436                 SAFE_FREE(data);
 437                 break;
 438         }
 439
 440         case 0x03:/* SMB2_GETINFO_SEC */
 441         {
 442                 uint8_t *p_marshalled_sd = NULL;
 443                 size_t sd_size = 0;
 444
 445                 status = smbd_do_query_security_desc(conn,
 446                                 state,
 447                                 fsp,
 448                                 /* Security info wanted. */
 449                                 in_additional_information,
 450                                 in_output_buffer_length,
 451                                 &p_marshalled_sd,
 452                                 &sd_size);
 453
 454                 if (NT_STATUS_EQUAL(status, NT_STATUS_BUFFER_TOO_SMALL)) {
 455                         /* Return needed size. */
 456                         state->out_output_buffer = data_blob_talloc(state,
 457                                                                     NULL,
 458                                                                     4);
 459                         if (tevent_req_nomem(state->out_output_buffer.data, req)) {
 460                                 return tevent_req_post(req, ev);
 461                         }
 462                         SIVAL(state->out_output_buffer.data,0,(uint32_t)sd_size);
 463                         state->status = NT_STATUS_BUFFER_TOO_SMALL;
 464                         break;
 465                 }
 466                 if (!NT_STATUS_IS_OK(status)) {
 467                         DEBUG(10,("smbd_smb2_getinfo_send: "
 468                                  "smbd_do_query_security_desc of %s failed "
 469                                  "(%s)\n", fsp_str_dbg(fsp),
 470                                  nt_errstr(status)));
 471                         tevent_req_nterror(req, status);
 472                         return tevent_req_post(req, ev);
 473                 }
 474
 475                 if (sd_size > 0) {
 476                         state->out_output_buffer = data_blob_talloc(state,
 477                                                                     p_marshalled_sd,
 478                                                                     sd_size);
 479                         if (tevent_req_nomem(state->out_output_buffer.data, req)) {
 480                                 return tevent_req_post(req, ev);
 481                         }
 482                 }
 483                 break;
 484         }
 485
 486         default:
 487                 DEBUG(10,("smbd_smb2_getinfo_send: "
 488                         "unknown in_info_type of %u "
 489                         " for file %s\n",
 490                         (unsigned int)in_info_type,
 491                         fsp_str_dbg(fsp) ));
 492
 493                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 494                 return tevent_req_post(req, ev);
 495         }
 496
 497         tevent_req_done(req);
 498         return tevent_req_post(req, ev);
 499 }
 500
 501 static NTSTATUS smbd_smb2_getinfo_recv(struct tevent_req *req,
 502                                        TALLOC_CTX *mem_ctx,
 503                                        DATA_BLOB *out_output_buffer,
 504                                        NTSTATUS *pstatus)
 505 {
 506         NTSTATUS status;
 507         struct smbd_smb2_getinfo_state *state = tevent_req_data(req,
 508                                                 struct smbd_smb2_getinfo_state);
 509
 510         if (tevent_req_is_nterror(req, &status)) {
 511                 tevent_req_received(req);
 512                 return status;
 513         }
 514
 515         *out_output_buffer = state->out_output_buffer;
 516         talloc_steal(mem_ctx, out_output_buffer->data);
 517         *pstatus = state->status;
 518
 519         tevent_req_received(req);
 520         return NT_STATUS_OK;
 521 }