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 (in_input_buffer.length > req->sconn->smb2.max_trans) {
  94                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  95         }
  96         if (in_output_buffer_length > req->sconn->smb2.max_trans) {
  97                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  98         }
  99
 100         if (req->compat_chain_fsp) {
 101                 /* skip check */
 102         } else if (in_file_id_persistent != in_file_id_volatile) {
 103                 return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
 104         }
 105
 106         subreq = smbd_smb2_getinfo_send(req,
 107                                         req->sconn->ev_ctx,
 108                                         req,
 109                                         in_info_type,
 110                                         in_file_info_class,
 111                                         in_output_buffer_length,
 112                                         in_input_buffer,
 113                                         in_additional_information,
 114                                         in_flags,
 115                                         in_file_id_volatile);
 116         if (subreq == NULL) {
 117                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 118         }
 119         tevent_req_set_callback(subreq, smbd_smb2_request_getinfo_done, req);
 120
 121         return smbd_smb2_request_pending_queue(req, subreq, 500);
 122 }
 123
 124 static void smbd_smb2_request_getinfo_done(struct tevent_req *subreq)
 125 {
 126         struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
 127                                         struct smbd_smb2_request);
 128         DATA_BLOB outbody;
 129         DATA_BLOB outdyn;
 130         uint16_t out_output_buffer_offset;
 131         DATA_BLOB out_output_buffer = data_blob_null;
 132         NTSTATUS status;
 133         NTSTATUS call_status = NT_STATUS_OK;
 134         NTSTATUS error; /* transport error */
 135
 136         status = smbd_smb2_getinfo_recv(subreq,
 137                                         req,
 138                                         &out_output_buffer,
 139                                         &call_status);
 140         TALLOC_FREE(subreq);
 141         if (!NT_STATUS_IS_OK(status)) {
 142                 error = smbd_smb2_request_error(req, status);
 143                 if (!NT_STATUS_IS_OK(error)) {
 144                         smbd_server_connection_terminate(req->sconn,
 145                                                          nt_errstr(error));
 146                         return;
 147                 }
 148                 return;
 149         }
 150
 151         if (!NT_STATUS_IS_OK(call_status)) {
 152                 /* Return a specific error with data. */
 153                 error = smbd_smb2_request_error_ex(req,
 154                                                 call_status,
 155                                                 &out_output_buffer,
 156                                                 __location__);
 157                 if (!NT_STATUS_IS_OK(error)) {
 158                         smbd_server_connection_terminate(req->sconn,
 159                                                          nt_errstr(error));
 160                         return;
 161                 }
 162                 return;
 163         }
 164
 165         out_output_buffer_offset = SMB2_HDR_BODY + 0x08;
 166
 167         outbody = data_blob_talloc(req->out.vector, NULL, 0x08);
 168         if (outbody.data == NULL) {
 169                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 170                 if (!NT_STATUS_IS_OK(error)) {
 171                         smbd_server_connection_terminate(req->sconn,
 172                                                          nt_errstr(error));
 173                         return;
 174                 }
 175                 return;
 176         }
 177
 178         SSVAL(outbody.data, 0x00, 0x08 + 1);    /* struct size */
 179         SSVAL(outbody.data, 0x02,
 180               out_output_buffer_offset);        /* output buffer offset */
 181         SIVAL(outbody.data, 0x04,
 182               out_output_buffer.length);        /* output buffer length */
 183
 184         outdyn = out_output_buffer;
 185
 186         error = smbd_smb2_request_done(req, outbody, &outdyn);
 187         if (!NT_STATUS_IS_OK(error)) {
 188                 smbd_server_connection_terminate(req->sconn,
 189                                                  nt_errstr(error));
 190                 return;
 191         }
 192 }
 193
 194 struct smbd_smb2_getinfo_state {
 195         struct smbd_smb2_request *smb2req;
 196         NTSTATUS status;
 197         DATA_BLOB out_output_buffer;
 198 };
 199
 200 static void smb2_ipc_getinfo(struct tevent_req *req,
 201                                 struct smbd_smb2_getinfo_state *state,
 202                                 struct tevent_context *ev,
 203                                 uint8_t in_info_type,
 204                                 uint8_t in_file_info_class)
 205 {
 206         /* We want to reply to SMB2_GETINFO_FILE
 207            with a class of SMB2_FILE_STANDARD_INFO as
 208            otherwise a Win7 client issues this request
 209            twice (2xroundtrips) if we return NOT_SUPPORTED.
 210            NB. We do the same for SMB1 in call_trans2qpipeinfo() */
 211
 212         if (in_info_type == 0x01 && /* SMB2_GETINFO_FILE */
 213                         in_file_info_class == 0x05) { /* SMB2_FILE_STANDARD_INFO */
 214                 state->out_output_buffer = data_blob_talloc(state,
 215                                                 NULL, 24);
 216                 if (tevent_req_nomem(state->out_output_buffer.data, req)) {
 217                         return;
 218                 }
 219
 220                 memset(state->out_output_buffer.data,0,24);
 221                 SOFF_T(state->out_output_buffer.data,0,4096LL);
 222                 SIVAL(state->out_output_buffer.data,16,1);
 223                 SIVAL(state->out_output_buffer.data,20,1);
 224                 tevent_req_done(req);
 225         } else {
 226                 tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
 227         }
 228 }
 229
 230 static struct tevent_req *smbd_smb2_getinfo_send(TALLOC_CTX *mem_ctx,
 231                                                  struct tevent_context *ev,
 232                                                  struct smbd_smb2_request *smb2req,
 233                                                  uint8_t in_info_type,
 234                                                  uint8_t in_file_info_class,
 235                                                  uint32_t in_output_buffer_length,
 236                                                  DATA_BLOB in_input_buffer,
 237                                                  uint32_t in_additional_information,
 238                                                  uint32_t in_flags,
 239                                                  uint64_t in_file_id_volatile)
 240 {
 241         struct tevent_req *req;
 242         struct smbd_smb2_getinfo_state *state;
 243         struct smb_request *smbreq;
 244         connection_struct *conn = smb2req->tcon->compat_conn;
 245         files_struct *fsp;
 246         NTSTATUS status;
 247
 248         req = tevent_req_create(mem_ctx, &state,
 249                                 struct smbd_smb2_getinfo_state);
 250         if (req == NULL) {
 251                 return NULL;
 252         }
 253         state->smb2req = smb2req;
 254         state->status = NT_STATUS_OK;
 255         state->out_output_buffer = data_blob_null;
 256
 257         DEBUG(10,("smbd_smb2_getinfo_send: file_id[0x%016llX]\n",
 258                   (unsigned long long)in_file_id_volatile));
 259
 260         smbreq = smbd_smb2_fake_smb_request(smb2req);
 261         if (tevent_req_nomem(smbreq, req)) {
 262                 return tevent_req_post(req, ev);
 263         }
 264
 265         fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
 266         if (fsp == NULL) {
 267                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 268                 return tevent_req_post(req, ev);
 269         }
 270         if (conn != fsp->conn) {
 271                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 272                 return tevent_req_post(req, ev);
 273         }
 274         if (smb2req->session->vuid != fsp->vuid) {
 275                 tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 276                 return tevent_req_post(req, ev);
 277         }
 278
 279         if (IS_IPC(conn)) {
 280                 smb2_ipc_getinfo(req, state, ev,
 281                         in_info_type, in_file_info_class);
 282                 return tevent_req_post(req, ev);
 283         }
 284
 285         switch (in_info_type) {
 286         case 0x01:/* SMB2_GETINFO_FILE */
 287         {
 288                 uint16_t file_info_level;
 289                 char *data = NULL;
 290                 unsigned int data_size = 0;
 291                 bool delete_pending = false;
 292                 struct timespec write_time_ts;
 293                 struct file_id fileid;
 294                 struct ea_list *ea_list = NULL;
 295                 int lock_data_count = 0;
 296                 char *lock_data = NULL;
 297
 298                 ZERO_STRUCT(write_time_ts);
 299
 300                 switch (in_file_info_class) {
 301                 case 0x0F:/* RAW_FILEINFO_SMB2_ALL_EAS */
 302                         file_info_level = 0xFF00 | in_file_info_class;
 303                         break;
 304
 305                 case 0x12:/* RAW_FILEINFO_SMB2_ALL_INFORMATION */
 306                         file_info_level = 0xFF00 | in_file_info_class;
 307                         break;
 308
 309                 default:
 310                         /* the levels directly map to the passthru levels */
 311                         file_info_level = in_file_info_class + 1000;
 312                         break;
 313                 }
 314
 315                 if (fsp->fake_file_handle) {
 316                         /*
 317                          * This is actually for the QUOTA_FAKE_FILE --metze
 318                          */
 319
 320                         /* We know this name is ok, it's already passed the checks. */
 321
 322                 } else if (fsp && fsp->fh->fd == -1) {
 323                         /*
 324                          * This is actually a QFILEINFO on a directory
 325                          * handle (returned from an NT SMB). NT5.0 seems
 326                          * to do this call. JRA.
 327                          */
 328
 329                         if (INFO_LEVEL_IS_UNIX(file_info_level)) {
 330                                 /* Always do lstat for UNIX calls. */
 331                                 if (SMB_VFS_LSTAT(conn, fsp->fsp_name)) {
 332                                         DEBUG(3,("smbd_smb2_getinfo_send: "
 333                                                  "SMB_VFS_LSTAT of %s failed "
 334                                                  "(%s)\n", fsp_str_dbg(fsp),
 335                                                  strerror(errno)));
 336                                         status = map_nt_error_from_unix(errno);
 337                                         tevent_req_nterror(req, status);
 338                                         return tevent_req_post(req, ev);
 339                                 }
 340                         } else if (SMB_VFS_STAT(conn, fsp->fsp_name)) {
 341                                 DEBUG(3,("smbd_smb2_getinfo_send: "
 342                                          "SMB_VFS_STAT of %s failed (%s)\n",
 343                                          fsp_str_dbg(fsp),
 344                                          strerror(errno)));
 345                                 status = map_nt_error_from_unix(errno);
 346                                 tevent_req_nterror(req, status);
 347                                 return tevent_req_post(req, ev);
 348                         }
 349
 350                         fileid = vfs_file_id_from_sbuf(conn,
 351                                                        &fsp->fsp_name->st);
 352                         get_file_infos(fileid, fsp->name_hash,
 353                                 &delete_pending, &write_time_ts);
 354                 } else {
 355                         /*
 356                          * Original code - this is an open file.
 357                          */
 358
 359                         if (SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
 360                                 DEBUG(3, ("smbd_smb2_getinfo_send: "
 361                                           "fstat of fnum %d failed (%s)\n",
 362                                           fsp->fnum, strerror(errno)));
 363                                 status = map_nt_error_from_unix(errno);
 364                                 tevent_req_nterror(req, status);
 365                                 return tevent_req_post(req, ev);
 366                         }
 367                         fileid = vfs_file_id_from_sbuf(conn,
 368                                                        &fsp->fsp_name->st);
 369                         get_file_infos(fileid, fsp->name_hash,
 370                                 &delete_pending, &write_time_ts);
 371                 }
 372
 373                 status = smbd_do_qfilepathinfo(conn, state,
 374                                                file_info_level,
 375                                                fsp,
 376                                                fsp->fsp_name,
 377                                                delete_pending,
 378                                                write_time_ts,
 379                                                ea_list,
 380                                                lock_data_count,
 381                                                lock_data,
 382                                                STR_UNICODE,
 383                                                in_output_buffer_length,
 384                                                &data,
 385                                                &data_size);
 386                 if (!NT_STATUS_IS_OK(status)) {
 387                         SAFE_FREE(data);
 388                         if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
 389                                 status = NT_STATUS_INVALID_INFO_CLASS;
 390                         }
 391                         tevent_req_nterror(req, status);
 392                         return tevent_req_post(req, ev);
 393                 }
 394                 if (data_size > 0) {
 395                         state->out_output_buffer = data_blob_talloc(state,
 396                                                                     data,
 397                                                                     data_size);
 398                         SAFE_FREE(data);
 399                         if (tevent_req_nomem(state->out_output_buffer.data, req)) {
 400                                 return tevent_req_post(req, ev);
 401                         }
 402                 }
 403                 SAFE_FREE(data);
 404                 break;
 405         }
 406
 407         case 0x02:/* SMB2_GETINFO_FS */
 408         {
 409                 uint16_t file_info_level;
 410                 char *data = NULL;
 411                 int data_size = 0;
 412
 413                 /* the levels directly map to the passthru levels */
 414                 file_info_level = in_file_info_class + 1000;
 415
 416                 status = smbd_do_qfsinfo(conn, state,
 417                                          file_info_level,
 418                                          STR_UNICODE,
 419                                          in_output_buffer_length,
 420                                          &data,
 421                                          &data_size);
 422                 if (!NT_STATUS_IS_OK(status)) {
 423                         SAFE_FREE(data);
 424                         if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
 425                                 status = NT_STATUS_INVALID_INFO_CLASS;
 426                         }
 427                         tevent_req_nterror(req, status);
 428                         return tevent_req_post(req, ev);
 429                 }
 430                 if (data_size > 0) {
 431                         state->out_output_buffer = data_blob_talloc(state,
 432                                                                     data,
 433                                                                     data_size);
 434                         SAFE_FREE(data);
 435                         if (tevent_req_nomem(state->out_output_buffer.data, req)) {
 436                                 return tevent_req_post(req, ev);
 437                         }
 438                 }
 439                 SAFE_FREE(data);
 440                 break;
 441         }
 442
 443         case 0x03:/* SMB2_GETINFO_SEC */
 444         {
 445                 uint8_t *p_marshalled_sd = NULL;
 446                 size_t sd_size = 0;
 447
 448                 status = smbd_do_query_security_desc(conn,
 449                                 state,
 450                                 fsp,
 451                                 /* Security info wanted. */
 452                                 in_additional_information,
 453                                 in_output_buffer_length,
 454                                 &p_marshalled_sd,
 455                                 &sd_size);
 456
 457                 if (NT_STATUS_EQUAL(status, NT_STATUS_BUFFER_TOO_SMALL)) {
 458                         /* Return needed size. */
 459                         state->out_output_buffer = data_blob_talloc(state,
 460                                                                     NULL,
 461                                                                     4);
 462                         if (tevent_req_nomem(state->out_output_buffer.data, req)) {
 463                                 return tevent_req_post(req, ev);
 464                         }
 465                         SIVAL(state->out_output_buffer.data,0,(uint32_t)sd_size);
 466                         state->status = NT_STATUS_BUFFER_TOO_SMALL;
 467                         break;
 468                 }
 469                 if (!NT_STATUS_IS_OK(status)) {
 470                         DEBUG(10,("smbd_smb2_getinfo_send: "
 471                                  "smbd_do_query_security_desc of %s failed "
 472                                  "(%s)\n", fsp_str_dbg(fsp),
 473                                  nt_errstr(status)));
 474                         tevent_req_nterror(req, status);
 475                         return tevent_req_post(req, ev);
 476                 }
 477
 478                 if (sd_size > 0) {
 479                         state->out_output_buffer = data_blob_talloc(state,
 480                                                                     p_marshalled_sd,
 481                                                                     sd_size);
 482                         if (tevent_req_nomem(state->out_output_buffer.data, req)) {
 483                                 return tevent_req_post(req, ev);
 484                         }
 485                 }
 486                 break;
 487         }
 488
 489         default:
 490                 DEBUG(10,("smbd_smb2_getinfo_send: "
 491                         "unknown in_info_type of %u "
 492                         " for file %s\n",
 493                         (unsigned int)in_info_type,
 494                         fsp_str_dbg(fsp) ));
 495
 496                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 497                 return tevent_req_post(req, ev);
 498         }
 499
 500         tevent_req_done(req);
 501         return tevent_req_post(req, ev);
 502 }
 503
 504 static NTSTATUS smbd_smb2_getinfo_recv(struct tevent_req *req,
 505                                        TALLOC_CTX *mem_ctx,
 506                                        DATA_BLOB *out_output_buffer,
 507                                        NTSTATUS *pstatus)
 508 {
 509         NTSTATUS status;
 510         struct smbd_smb2_getinfo_state *state = tevent_req_data(req,
 511                                                 struct smbd_smb2_getinfo_state);
 512
 513         if (tevent_req_is_nterror(req, &status)) {
 514                 tevent_req_received(req);
 515                 return status;
 516         }
 517
 518         *out_output_buffer = state->out_output_buffer;
 519         talloc_steal(mem_ctx, out_output_buffer->data);
 520         *pstatus = state->status;
 521
 522         tevent_req_received(req);
 523         return NT_STATUS_OK;
 524 }