1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
  25  */
  26 
  27 #include <smbsrv/smb_kproto.h>
  28 #include <smbsrv/smb_vops.h>
  29 #include <smbsrv/smb_fsops.h>
  30 
  31 /*
  32  * Trans2 Query File/Path Information Levels:
  33  *
  34  * SMB_INFO_STANDARD
  35  * SMB_INFO_QUERY_EA_SIZE
  36  * SMB_INFO_QUERY_EAS_FROM_LIST
  37  * SMB_INFO_QUERY_ALL_EAS - not valid for pipes
  38  * SMB_INFO_IS_NAME_VALID - only valid when query is by path
  39  *
  40  * SMB_QUERY_FILE_BASIC_INFO
  41  * SMB_QUERY_FILE_STANDARD_INFO
  42  * SMB_QUERY_FILE_EA_INFO
  43  * SMB_QUERY_FILE_NAME_INFO
  44  * SMB_QUERY_FILE_ALL_INFO
  45  * SMB_QUERY_FILE_ALT_NAME_INFO - not valid for pipes
  46  * SMB_QUERY_FILE_STREAM_INFO - not valid for pipes
  47  * SMB_QUERY_FILE_COMPRESSION_INFO - not valid for pipes
  48  *
  49  * Supported Passthrough levels:
  50  * SMB_FILE_BASIC_INFORMATION
  51  * SMB_FILE_STANDARD_INFORMATION
  52  * SMB_FILE_INTERNAL_INFORMATION
  53  * SMB_FILE_EA_INFORMATION
  54  * SMB_FILE_ACCESS_INFORMATION - not yet supported when query by path
  55  * SMB_FILE_NAME_INFORMATION
  56  * SMB_FILE_ALL_INFORMATION
  57  * SMB_FILE_ALT_NAME_INFORMATION - not valid for pipes
  58  * SMB_FILE_STREAM_INFORMATION - not valid for pipes
  59  * SMB_FILE_COMPRESSION_INFORMATION - not valid for pipes
  60  * SMB_FILE_NETWORK_OPEN_INFORMATION - not valid for pipes
  61  * SMB_FILE_ATTR_TAG_INFORMATION - not valid for pipes
  62  *
  63  * Internal levels representing non trans2 requests
  64  * SMB_QUERY_INFORMATION
  65  * SMB_QUERY_INFORMATION2
  66  */
  67 
  68 /*
  69  * SMB_STREAM_ENCODE_FIXED_SIZE:
  70  * 2 dwords + 2 quadwords => 4 + 4 + 8 + 8 => 24
  71  */
  72 #define SMB_STREAM_ENCODE_FIXED_SZ      24
  73 
  74 /* See smb_queryinfo_t in smb_ktypes.h */
  75 #define qi_mtime        qi_attr.sa_vattr.va_mtime
  76 #define qi_ctime        qi_attr.sa_vattr.va_ctime
  77 #define qi_atime        qi_attr.sa_vattr.va_atime
  78 #define qi_crtime       qi_attr.sa_crtime
  79 
  80 static int smb_query_by_fid(smb_request_t *, smb_xa_t *, uint16_t);
  81 static int smb_query_by_path(smb_request_t *, smb_xa_t *, uint16_t);
  82 
  83 static int smb_query_fileinfo(smb_request_t *, smb_node_t *,
  84     uint16_t, smb_queryinfo_t *);
  85 static int smb_query_pipeinfo(smb_request_t *, smb_opipe_t *,
  86     uint16_t, smb_queryinfo_t *);
  87 static boolean_t smb_query_pipe_valid_infolev(smb_request_t *, uint16_t);
  88 
  89 static int smb_query_encode_response(smb_request_t *, smb_xa_t *,
  90     uint16_t, smb_queryinfo_t *);
  91 static boolean_t smb_stream_fits(smb_request_t *, mbuf_chain_t *,
  92     char *, uint32_t);
  93 static int smb_query_pathname(smb_request_t *, smb_node_t *, boolean_t,
  94     smb_queryinfo_t *);
  95 
  96 int smb_query_passthru;
  97 
  98 /*
  99  * smb_com_trans2_query_file_information
 100  */
 101 smb_sdrc_t
 102 smb_com_trans2_query_file_information(struct smb_request *sr, struct smb_xa *xa)
 103 {
 104         uint16_t infolev;
 105 
 106         if (smb_mbc_decodef(&xa->req_param_mb, "ww",
 107             &sr->smb_fid, &infolev) != 0)
 108                 return (SDRC_ERROR);
 109 
 110         if (smb_query_by_fid(sr, xa, infolev) != 0)
 111                 return (SDRC_ERROR);
 112 
 113         return (SDRC_SUCCESS);
 114 }
 115 
 116 /*
 117  * smb_com_trans2_query_path_information
 118  */
 119 smb_sdrc_t
 120 smb_com_trans2_query_path_information(smb_request_t *sr, smb_xa_t *xa)
 121 {
 122         uint16_t        infolev;
 123         smb_fqi_t       *fqi = &sr->arg.dirop.fqi;
 124 
 125         if (STYPE_ISIPC(sr->tid_tree->t_res_type)) {
 126                 smbsr_error(sr, NT_STATUS_INVALID_DEVICE_REQUEST,
 127                     ERRDOS, ERROR_INVALID_FUNCTION);
 128                 return (SDRC_ERROR);
 129         }
 130 
 131         if (smb_mbc_decodef(&xa->req_param_mb, "%w4.u",
 132             sr, &infolev, &fqi->fq_path.pn_path) != 0)
 133                 return (SDRC_ERROR);
 134 
 135         if (smb_query_by_path(sr, xa, infolev) != 0)
 136                 return (SDRC_ERROR);
 137 
 138         return (SDRC_SUCCESS);
 139 }
 140 
 141 /*
 142  * smb_com_query_information (aka getattr)
 143  */
 144 smb_sdrc_t
 145 smb_pre_query_information(smb_request_t *sr)
 146 {
 147         int rc;
 148         smb_fqi_t *fqi = &sr->arg.dirop.fqi;
 149 
 150         rc = smbsr_decode_data(sr, "%S", sr, &fqi->fq_path.pn_path);
 151 
 152         DTRACE_SMB_1(op__QueryInformation__start, smb_request_t *, sr); /* arg.dirop */
 153 
 154         return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
 155 }
 156 
 157 void
 158 smb_post_query_information(smb_request_t *sr)
 159 {
 160         DTRACE_SMB_1(op__QueryInformation__done, smb_request_t *, sr);
 161 }
 162 
 163 smb_sdrc_t
 164 smb_com_query_information(smb_request_t *sr)
 165 {
 166         uint16_t infolev = SMB_QUERY_INFORMATION;
 167 
 168         if (STYPE_ISIPC(sr->tid_tree->t_res_type)) {
 169                 smbsr_error(sr, NT_STATUS_ACCESS_DENIED,
 170                     ERRDOS, ERROR_ACCESS_DENIED);
 171                 return (SDRC_ERROR);
 172         }
 173 
 174         if (smb_query_by_path(sr, NULL, infolev) != 0)
 175                 return (SDRC_ERROR);
 176 
 177         return (SDRC_SUCCESS);
 178 }
 179 
 180 /*
 181  * smb_com_query_information2 (aka getattre)
 182  */
 183 smb_sdrc_t
 184 smb_pre_query_information2(smb_request_t *sr)
 185 {
 186         int rc;
 187         rc = smbsr_decode_vwv(sr, "w", &sr->smb_fid);
 188 
 189         DTRACE_SMB_1(op__QueryInformation2__start, smb_request_t *, sr);
 190 
 191         return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
 192 }
 193 
 194 void
 195 smb_post_query_information2(smb_request_t *sr)
 196 {
 197         DTRACE_SMB_1(op__QueryInformation2__done, smb_request_t *, sr);
 198 }
 199 
 200 smb_sdrc_t
 201 smb_com_query_information2(smb_request_t *sr)
 202 {
 203         uint16_t infolev = SMB_QUERY_INFORMATION2;
 204 
 205         if (smb_query_by_fid(sr, NULL, infolev) != 0)
 206                 return (SDRC_ERROR);
 207 
 208         return (SDRC_SUCCESS);
 209 }
 210 
 211 /*
 212  * smb_query_by_fid
 213  *
 214  * Common code for querying file information by open file (or pipe) id.
 215  * Use the id to identify the node / pipe object and request the
 216  * smb_queryinfo_t data for that object.
 217  */
 218 static int
 219 smb_query_by_fid(smb_request_t *sr, smb_xa_t *xa, uint16_t infolev)
 220 {
 221         int             rc;
 222         smb_queryinfo_t *qinfo;
 223         smb_node_t      *node;
 224         smb_opipe_t     *opipe;
 225 
 226         smbsr_lookup_file(sr);
 227 
 228         if (sr->fid_ofile == NULL) {
 229                 smbsr_error(sr, NT_STATUS_INVALID_HANDLE, ERRDOS, ERRbadfid);
 230                 return (-1);
 231         }
 232 
 233         if (infolev == SMB_INFO_IS_NAME_VALID) {
 234                 smbsr_error(sr, 0, ERRDOS, ERROR_INVALID_LEVEL);
 235                 smbsr_release_file(sr);
 236                 return (-1);
 237         }
 238 
 239         if ((sr->fid_ofile->f_ftype == SMB_FTYPE_MESG_PIPE) &&
 240             (!smb_query_pipe_valid_infolev(sr, infolev))) {
 241                 smbsr_release_file(sr);
 242                 return (-1);
 243         }
 244 
 245         sr->user_cr = smb_ofile_getcred(sr->fid_ofile);
 246         qinfo = kmem_alloc(sizeof (smb_queryinfo_t), KM_SLEEP);
 247 
 248         switch (sr->fid_ofile->f_ftype) {
 249         case SMB_FTYPE_DISK:
 250                 node = sr->fid_ofile->f_node;
 251                 rc = smb_query_fileinfo(sr, node, infolev, qinfo);
 252                 break;
 253         case SMB_FTYPE_MESG_PIPE:
 254                 opipe = sr->fid_ofile->f_pipe;
 255                 rc = smb_query_pipeinfo(sr, opipe, infolev, qinfo);
 256                 break;
 257         default:
 258                 smbsr_error(sr, 0, ERRDOS, ERRbadfile);
 259                 rc = -1;
 260                 break;
 261         }
 262 
 263         if (rc == 0)
 264                 rc = smb_query_encode_response(sr, xa, infolev, qinfo);
 265 
 266         kmem_free(qinfo, sizeof (smb_queryinfo_t));
 267         smbsr_release_file(sr);
 268         return (rc);
 269 }
 270 
 271 /*
 272  * smb_query_by_path
 273  *
 274  * Common code for querying file information by file name.
 275  * Use the file name to identify the node object and request the
 276  * smb_queryinfo_t data for that node.
 277  *
 278  * Path should be set in sr->arg.dirop.fqi.fq_path prior to
 279  * calling smb_query_by_path.
 280  *
 281  * Querying attributes on a named pipe by name is an error and
 282  * is handled in the calling functions so that they can return
 283  * the appropriate error status code (which differs by caller).
 284  */
 285 static int
 286 smb_query_by_path(smb_request_t *sr, smb_xa_t *xa, uint16_t infolev)
 287 {
 288         smb_queryinfo_t *qinfo;
 289         smb_node_t      *node, *dnode;
 290         smb_pathname_t  *pn;
 291         int             rc;
 292 
 293         /*
 294          * The function smb_query_fileinfo is used here and in
 295          * smb_query_by_fid.  That common function needs this
 296          * one to call it with a NULL fid_ofile, so check here.
 297          * Note: smb_query_by_fid enforces the opposite.
 298          *
 299          * In theory we could ASSERT this, but whether we have
 300          * fid_ofile set here depends on what sequence of SMB
 301          * commands the client has sent in this message, so
 302          * let's be cautious and handle it as an error.
 303          */
 304         if (sr->fid_ofile != NULL)
 305                 return (-1);
 306 
 307 
 308         /* VALID, but not yet supported */
 309         if (infolev == SMB_FILE_ACCESS_INFORMATION) {
 310                 smbsr_error(sr, 0, ERRDOS, ERROR_INVALID_LEVEL);
 311                 return (-1);
 312         }
 313 
 314         pn = &sr->arg.dirop.fqi.fq_path;
 315         smb_pathname_init(sr, pn, pn->pn_path);
 316         if (!smb_pathname_validate(sr, pn))
 317                 return (-1);
 318 
 319         qinfo = kmem_alloc(sizeof (smb_queryinfo_t), KM_SLEEP);
 320 
 321         rc = smb_pathname_reduce(sr, sr->user_cr, pn->pn_path,
 322             sr->tid_tree->t_snode, sr->tid_tree->t_snode, &dnode,
 323             qinfo->qi_name);
 324 
 325         if (rc == 0) {
 326                 rc = smb_fsop_lookup_name(sr, sr->user_cr, SMB_FOLLOW_LINKS,
 327                     sr->tid_tree->t_snode, dnode, qinfo->qi_name, &node);
 328                 smb_node_release(dnode);
 329         }
 330 
 331         if (rc != 0) {
 332                 if (rc == ENOENT)
 333                         smbsr_error(sr, NT_STATUS_OBJECT_NAME_NOT_FOUND,
 334                             ERRDOS, ERROR_FILE_NOT_FOUND);
 335                 else
 336                         smbsr_errno(sr, rc);
 337 
 338                 kmem_free(qinfo, sizeof (smb_queryinfo_t));
 339                 return (-1);
 340         }
 341 
 342         if ((sr->smb_flg2 & SMB_FLAGS2_DFS) && smb_node_is_dfslink(node)) {
 343                 smbsr_error(sr, NT_STATUS_PATH_NOT_COVERED, ERRSRV, ERRbadpath);
 344                 kmem_free(qinfo, sizeof (smb_queryinfo_t));
 345                 smb_node_release(node);
 346                 return (-1);
 347         }
 348 
 349         rc = smb_query_fileinfo(sr, node, infolev, qinfo);
 350         if (rc != 0) {
 351                 kmem_free(qinfo, sizeof (smb_queryinfo_t));
 352                 smb_node_release(node);
 353                 return (rc);
 354         }
 355 
 356         /* If delete_on_close - NT_STATUS_DELETE_PENDING */
 357         if (qinfo->qi_delete_on_close) {
 358                 smbsr_error(sr, NT_STATUS_DELETE_PENDING,
 359                     ERRDOS, ERROR_ACCESS_DENIED);
 360                 kmem_free(qinfo, sizeof (smb_queryinfo_t));
 361                 smb_node_release(node);
 362                 return (-1);
 363         }
 364 
 365         rc = smb_query_encode_response(sr, xa, infolev, qinfo);
 366         kmem_free(qinfo, sizeof (smb_queryinfo_t));
 367         smb_node_release(node);
 368         return (rc);
 369 }
 370 
 371 /*
 372  * smb_size32
 373  * Some responses only support 32 bit file sizes. If the file size
 374  * exceeds UINT_MAX (32 bit) we return UINT_MAX in the response.
 375  */
 376 static uint32_t
 377 smb_size32(u_offset_t size)
 378 {
 379         return ((size > UINT_MAX) ? UINT_MAX : (uint32_t)size);
 380 }
 381 
 382 /*
 383  * smb_query_encode_response
 384  *
 385  * Encode the data from smb_queryinfo_t into client response
 386  */
 387 int
 388 smb_query_encode_response(smb_request_t *sr, smb_xa_t *xa,
 389     uint16_t infolev, smb_queryinfo_t *qinfo)
 390 {
 391         uint16_t dattr;
 392         u_offset_t datasz, allocsz;
 393         uint32_t status;
 394 
 395         dattr = qinfo->qi_attr.sa_dosattr & FILE_ATTRIBUTE_MASK;
 396         datasz = qinfo->qi_attr.sa_vattr.va_size;
 397         allocsz = qinfo->qi_attr.sa_allocsz;
 398 
 399         switch (infolev) {
 400         case SMB_QUERY_INFORMATION:
 401                 (void) smbsr_encode_result(sr, 10, 0, "bwll10.w",
 402                     10,
 403                     dattr,
 404                     smb_time_gmt_to_local(sr, qinfo->qi_mtime.tv_sec),
 405                     smb_size32(datasz),
 406                     0);
 407                 break;
 408 
 409         case SMB_QUERY_INFORMATION2:
 410                 (void) smbsr_encode_result(sr, 11, 0, "byyyllww",
 411                     11,
 412                     smb_time_gmt_to_local(sr, qinfo->qi_crtime.tv_sec),
 413                     smb_time_gmt_to_local(sr, qinfo->qi_atime.tv_sec),
 414                     smb_time_gmt_to_local(sr, qinfo->qi_mtime.tv_sec),
 415                     smb_size32(datasz), smb_size32(allocsz), dattr, 0);
 416         break;
 417 
 418         case SMB_FILE_ACCESS_INFORMATION:
 419                 ASSERT(sr->fid_ofile);
 420                 (void) smb_mbc_encodef(&xa->rep_data_mb, "l",
 421                     sr->fid_ofile->f_granted_access);
 422                 break;
 423 
 424         case SMB_INFO_STANDARD:
 425                 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
 426                 (void) smb_mbc_encodef(&xa->rep_data_mb,
 427                     ((sr->session->native_os == NATIVE_OS_WIN95) ?
 428                     "YYYllw" : "yyyllw"),
 429                     smb_time_gmt_to_local(sr, qinfo->qi_crtime.tv_sec),
 430                     smb_time_gmt_to_local(sr, qinfo->qi_atime.tv_sec),
 431                     smb_time_gmt_to_local(sr, qinfo->qi_mtime.tv_sec),
 432                     smb_size32(datasz), smb_size32(allocsz), dattr);
 433                 break;
 434 
 435         case SMB_INFO_QUERY_EA_SIZE:
 436                 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
 437                 (void) smb_mbc_encodef(&xa->rep_data_mb,
 438                     ((sr->session->native_os == NATIVE_OS_WIN95) ?
 439                     "YYYllwl" : "yyyllwl"),
 440                     smb_time_gmt_to_local(sr, qinfo->qi_crtime.tv_sec),
 441                     smb_time_gmt_to_local(sr, qinfo->qi_atime.tv_sec),
 442                     smb_time_gmt_to_local(sr, qinfo->qi_mtime.tv_sec),
 443                     smb_size32(datasz), smb_size32(allocsz), dattr, 0);
 444                 break;
 445 
 446         case SMB_INFO_QUERY_ALL_EAS:
 447         case SMB_INFO_QUERY_EAS_FROM_LIST:
 448                 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
 449                 (void) smb_mbc_encodef(&xa->rep_data_mb, "l", 0);
 450                 break;
 451 
 452         case SMB_INFO_IS_NAME_VALID:
 453                 break;
 454 
 455         case SMB_QUERY_FILE_BASIC_INFO:
 456         case SMB_FILE_BASIC_INFORMATION:
 457                 /*
 458                  * NT includes 6 bytes (spec says 4) at the end of this
 459                  * response, which are required by NetBench 5.01.
 460                  */
 461                 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
 462                 (void) smb_mbc_encodef(&xa->rep_data_mb, "TTTTw6.",
 463                     &qinfo->qi_crtime,
 464                     &qinfo->qi_atime,
 465                     &qinfo->qi_mtime,
 466                     &qinfo->qi_ctime,
 467                     dattr);
 468                 break;
 469 
 470         case SMB_QUERY_FILE_STANDARD_INFO:
 471         case SMB_FILE_STANDARD_INFORMATION:
 472                 /* 2-byte pad at end */
 473                 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
 474                 (void) smb_mbc_encodef(&xa->rep_data_mb, "qqlbb2.",
 475                     (uint64_t)allocsz,
 476                     (uint64_t)datasz,
 477                     qinfo->qi_attr.sa_vattr.va_nlink,
 478                     qinfo->qi_delete_on_close,
 479                     qinfo->qi_isdir);
 480                 break;
 481 
 482         case SMB_QUERY_FILE_EA_INFO:
 483         case SMB_FILE_EA_INFORMATION:
 484                 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
 485                 (void) smb_mbc_encodef(&xa->rep_data_mb, "l", 0);
 486                 break;
 487 
 488         case SMB_QUERY_FILE_NAME_INFO:
 489         case SMB_FILE_NAME_INFORMATION:
 490                 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
 491                 (void) smb_mbc_encodef(&xa->rep_data_mb, "%lu", sr,
 492                     qinfo->qi_namelen, qinfo->qi_name);
 493                 break;
 494 
 495         case SMB_QUERY_FILE_ALL_INFO:
 496         case SMB_FILE_ALL_INFORMATION:
 497                 /*
 498                  * There is a 6-byte pad between Attributes and AllocationSize,
 499                  * and a 2-byte pad after the Directory field.
 500                  */
 501                 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
 502                 (void) smb_mbc_encodef(&xa->rep_data_mb, "TTTTw6.qqlbb2.l",
 503                     &qinfo->qi_crtime,
 504                     &qinfo->qi_atime,
 505                     &qinfo->qi_mtime,
 506                     &qinfo->qi_ctime,
 507                     dattr,
 508                     (uint64_t)allocsz,
 509                     (uint64_t)datasz,
 510                     qinfo->qi_attr.sa_vattr.va_nlink,
 511                     qinfo->qi_delete_on_close,
 512                     qinfo->qi_isdir,
 513                     0);
 514 
 515                 (void) smb_mbc_encodef(&xa->rep_data_mb, "%lu",
 516                     sr, qinfo->qi_namelen, qinfo->qi_name);
 517                 break;
 518 
 519         case SMB_QUERY_FILE_ALT_NAME_INFO:
 520         case SMB_FILE_ALT_NAME_INFORMATION:
 521                 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
 522                 (void) smb_mbc_encodef(&xa->rep_data_mb, "%lU", sr,
 523                     smb_wcequiv_strlen(qinfo->qi_shortname),
 524                     qinfo->qi_shortname);
 525                 break;
 526 
 527         case SMB_QUERY_FILE_STREAM_INFO:
 528         case SMB_FILE_STREAM_INFORMATION:
 529                 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
 530                 status = smb_query_stream_info(sr, &xa->rep_data_mb, qinfo);
 531                 if (status)
 532                         smbsr_status(sr, status, 0, 0);
 533                 break;
 534 
 535         case SMB_QUERY_FILE_COMPRESSION_INFO:
 536         case SMB_FILE_COMPRESSION_INFORMATION:
 537                 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
 538                 (void) smb_mbc_encodef(&xa->rep_data_mb, "qwbbb3.",
 539                     datasz, 0, 0, 0, 0);
 540                 break;
 541 
 542         case SMB_FILE_INTERNAL_INFORMATION:
 543                 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
 544                 (void) smb_mbc_encodef(&xa->rep_data_mb, "q",
 545                     qinfo->qi_attr.sa_vattr.va_nodeid);
 546                 break;
 547 
 548         case SMB_FILE_NETWORK_OPEN_INFORMATION:
 549                 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
 550                 (void) smb_mbc_encodef(&xa->rep_data_mb, "TTTTqql4.",
 551                     &qinfo->qi_crtime,
 552                     &qinfo->qi_atime,
 553                     &qinfo->qi_mtime,
 554                     &qinfo->qi_ctime,
 555                     (uint64_t)allocsz,
 556                     (uint64_t)datasz,
 557                     (uint32_t)dattr);
 558                 break;
 559 
 560         case SMB_FILE_ATTR_TAG_INFORMATION:
 561                 /*
 562                  * If dattr includes FILE_ATTRIBUTE_REPARSE_POINT, the
 563                  * second dword should be the reparse tag.  Otherwise
 564                  * the tag value should be set to zero.
 565                  * We don't support reparse points, so we set the tag
 566                  * to zero.
 567                  */
 568                 (void) smb_mbc_encodef(&xa->rep_param_mb, "w", 0);
 569                 (void) smb_mbc_encodef(&xa->rep_data_mb, "ll",
 570                     (uint32_t)dattr, 0);
 571                 break;
 572 
 573         default:
 574                 if ((infolev > 1000) && smb_query_passthru)
 575                         smbsr_error(sr, NT_STATUS_NOT_SUPPORTED,
 576                             ERRDOS, ERROR_NOT_SUPPORTED);
 577                 else
 578                         smbsr_error(sr, 0, ERRDOS, ERROR_INVALID_LEVEL);
 579                 return (-1);
 580         }
 581 
 582         return (0);
 583 }
 584 
 585 /*
 586  * smb_encode_stream_info
 587  *
 588  * This function encodes the streams information.
 589  * The following rules about how have been derived from observed NT
 590  * behaviour.
 591  *
 592  * If the target is a file:
 593  * 1. If there are no named streams, the response should still contain
 594  *    an entry for the unnamed stream.
 595  * 2. If there are named streams, the response should contain an entry
 596  *    for the unnamed stream followed by the entries for the named
 597  *    streams.
 598  *
 599  * If the target is a directory:
 600  * 1. If there are no streams, the response is complete. Directories
 601  *    do not report the unnamed stream.
 602  * 2. If there are streams, the response should contain entries for
 603  *    those streams but there should not be an entry for the unnamed
 604  *    stream.
 605  *
 606  * Note that the stream name lengths exclude the null terminator but
 607  * the field lengths (i.e. next offset calculations) need to include
 608  * the null terminator and be padded to a multiple of 8 bytes. The
 609  * last entry does not seem to need any padding.
 610  *
 611  * If an error is encountered when trying to read the stream entries
 612  * (smb_odir_read_streaminfo) it is treated as if there are no [more]
 613  * entries. The entries that have been read so far are returned and
 614  * no error is reported.
 615  *
 616  * If the response buffer is not large enough to return all of the
 617  * named stream entries, the entries that do fit are returned and
 618  * a warning code is set (NT_STATUS_BUFFER_OVERFLOW). The next_offset
 619  * value in the last returned entry must be 0.
 620  */
 621 uint32_t
 622 smb_query_stream_info(smb_request_t *sr, mbuf_chain_t *mbc,
 623         smb_queryinfo_t *qinfo)
 624 {
 625         char *stream_name;
 626         uint32_t next_offset;
 627         uint32_t stream_nlen;
 628         uint32_t pad;
 629         u_offset_t datasz, allocsz;
 630         smb_streaminfo_t *sinfo, *sinfo_next;
 631         int rc = 0;
 632         boolean_t done = B_FALSE;
 633         boolean_t eos = B_FALSE;
 634         smb_odir_t *od = NULL;
 635         uint32_t status = 0;
 636 
 637         smb_node_t *fnode = qinfo->qi_node;
 638         smb_attr_t *attr = &qinfo->qi_attr;
 639 
 640         ASSERT(fnode);
 641         if (SMB_IS_STREAM(fnode)) {
 642                 fnode = fnode->n_unode;
 643                 ASSERT(fnode);
 644         }
 645         ASSERT(fnode->n_magic == SMB_NODE_MAGIC);
 646         ASSERT(fnode->n_state != SMB_NODE_STATE_DESTROYING);
 647 
 648         sinfo = kmem_alloc(sizeof (smb_streaminfo_t), KM_SLEEP);
 649         sinfo_next = kmem_alloc(sizeof (smb_streaminfo_t), KM_SLEEP);
 650         datasz = attr->sa_vattr.va_size;
 651         allocsz = attr->sa_allocsz;
 652 
 653         status = smb_odir_openat(sr, fnode, &od);
 654         switch (status) {
 655         case 0:
 656                 break;
 657         case NT_STATUS_NO_SUCH_FILE:
 658         case NT_STATUS_NOT_SUPPORTED:
 659                 /* No streams. */
 660                 done = B_TRUE;
 661                 break;
 662         default:
 663                 return (status);
 664         }
 665 
 666         if (!done) {
 667                 rc = smb_odir_read_streaminfo(sr, od, sinfo, &eos);
 668                 if ((rc != 0) || (eos))
 669                         done = B_TRUE;
 670         }
 671 
 672         /* If not a directory, encode an entry for the unnamed stream. */
 673         if (qinfo->qi_isdir == 0) {
 674                 stream_name = "::$DATA";
 675                 stream_nlen = smb_ascii_or_unicode_strlen(sr, stream_name);
 676                 next_offset = SMB_STREAM_ENCODE_FIXED_SZ + stream_nlen +
 677                     smb_ascii_or_unicode_null_len(sr);
 678 
 679                 /* Can unnamed stream fit in response buffer? */
 680                 if (MBC_ROOM_FOR(mbc, next_offset) == 0) {
 681                         done = B_TRUE;
 682                         status = NT_STATUS_BUFFER_OVERFLOW;
 683                 } else {
 684                         /* Can first named stream fit in rsp buffer? */
 685                         if (!done && !smb_stream_fits(sr, mbc, sinfo->si_name,
 686                             next_offset)) {
 687                                 done = B_TRUE;
 688                                 status = NT_STATUS_BUFFER_OVERFLOW;
 689                         }
 690 
 691                         if (done)
 692                                 next_offset = 0;
 693 
 694                         (void) smb_mbc_encodef(mbc, "%llqqu", sr,
 695                             next_offset, stream_nlen, datasz, allocsz,
 696                             stream_name);
 697                 }
 698         }
 699 
 700         /*
 701          * If there is no next entry, or there is not enough space in
 702          * the response buffer for the next entry, the next_offset and
 703          * padding are 0.
 704          */
 705         while (!done) {
 706                 stream_nlen = smb_ascii_or_unicode_strlen(sr, sinfo->si_name);
 707                 sinfo_next->si_name[0] = 0;
 708 
 709                 rc = smb_odir_read_streaminfo(sr, od, sinfo_next, &eos);
 710                 if ((rc != 0) || (eos)) {
 711                         done = B_TRUE;
 712                 } else {
 713                         next_offset = SMB_STREAM_ENCODE_FIXED_SZ +
 714                             stream_nlen +
 715                             smb_ascii_or_unicode_null_len(sr);
 716                         pad = smb_pad_align(next_offset, 8);
 717                         next_offset += pad;
 718 
 719                         /* Can next named stream fit in response buffer? */
 720                         if (!smb_stream_fits(sr, mbc, sinfo_next->si_name,
 721                             next_offset)) {
 722                                 done = B_TRUE;
 723                                 status = NT_STATUS_BUFFER_OVERFLOW;
 724                         }
 725                 }
 726 
 727                 if (done) {
 728                         next_offset = 0;
 729                         pad = 0;
 730                 }
 731 
 732                 (void) smb_mbc_encodef(mbc, "%llqqu#.",
 733                     sr, next_offset, stream_nlen,
 734                     sinfo->si_size, sinfo->si_alloc_size,
 735                     sinfo->si_name, pad);
 736 
 737                 (void) memcpy(sinfo, sinfo_next, sizeof (smb_streaminfo_t));
 738         }
 739 
 740         kmem_free(sinfo, sizeof (smb_streaminfo_t));
 741         kmem_free(sinfo_next, sizeof (smb_streaminfo_t));
 742         if (od) {
 743                 smb_odir_close(od);
 744                 smb_odir_release(od);
 745         }
 746 
 747         return (status);
 748 }
 749 
 750 /*
 751  * smb_stream_fits
 752  *
 753  * Check if the named stream entry can fit in the response buffer.
 754  *
 755  * Required space =
 756  *      offset (size of current entry)
 757  *      + SMB_STREAM_ENCODE_FIXED_SIZE
 758  *      + length of encoded stream name
 759  *      + length of null terminator
 760  *      + alignment padding
 761  */
 762 static boolean_t
 763 smb_stream_fits(smb_request_t *sr, mbuf_chain_t *mbc,
 764         char *name, uint32_t offset)
 765 {
 766         uint32_t len, pad;
 767 
 768         len = SMB_STREAM_ENCODE_FIXED_SZ +
 769             smb_ascii_or_unicode_strlen(sr, name) +
 770             smb_ascii_or_unicode_null_len(sr);
 771         pad = smb_pad_align(len, 8);
 772         len += pad;
 773 
 774         return (MBC_ROOM_FOR(mbc, offset + len) != 0);
 775 }
 776 
 777 /*
 778  * smb_query_fileinfo
 779  *
 780  * Populate smb_queryinfo_t structure for SMB_FTYPE_DISK
 781  * (This should become an smb_ofile / smb_node function.)
 782  */
 783 int
 784 smb_query_fileinfo(smb_request_t *sr, smb_node_t *node, uint16_t infolev,
 785     smb_queryinfo_t *qinfo)
 786 {
 787         int rc = 0;
 788 
 789         /* If shortname required but not supported -> OBJECT_NAME_NOT_FOUND */
 790         if ((infolev == SMB_QUERY_FILE_ALT_NAME_INFO) ||
 791             (infolev == SMB_FILE_ALT_NAME_INFORMATION)) {
 792                 if (!smb_tree_has_feature(sr->tid_tree, SMB_TREE_SHORTNAMES)) {
 793                         smbsr_error(sr, NT_STATUS_OBJECT_NAME_NOT_FOUND,
 794                             ERRDOS, ERROR_FILE_NOT_FOUND);
 795                         return (-1);
 796                 }
 797         }
 798 
 799         (void) bzero(qinfo, sizeof (smb_queryinfo_t));
 800 
 801         /* See: smb_query_encode_response */
 802         qinfo->qi_attr.sa_mask = SMB_AT_ALL;
 803         rc = smb_node_getattr(sr, node, sr->user_cr, sr->fid_ofile,
 804             &qinfo->qi_attr);
 805         if (rc != 0) {
 806                 smbsr_error(sr, NT_STATUS_INTERNAL_ERROR,
 807                     ERRDOS, ERROR_INTERNAL_ERROR);
 808                 return (-1);
 809         }
 810 
 811         qinfo->qi_node = node;
 812         qinfo->qi_delete_on_close =
 813             (node->flags & NODE_FLAGS_DELETE_ON_CLOSE) != 0;
 814         qinfo->qi_isdir = smb_node_is_dir(node);
 815 
 816         /*
 817          * The number of links reported should be the number of
 818          * non-deleted links. Thus if delete_on_close is set,
 819          * decrement the link count.
 820          */
 821         if (qinfo->qi_delete_on_close &&
 822             qinfo->qi_attr.sa_vattr.va_nlink > 0) {
 823                 --(qinfo->qi_attr.sa_vattr.va_nlink);
 824         }
 825 
 826         /*
 827          * populate name, namelen and shortname ONLY for the information
 828          * levels that require these fields
 829          */
 830         switch (infolev) {
 831         case SMB_QUERY_FILE_ALL_INFO:
 832         case SMB_FILE_ALL_INFORMATION:
 833                 rc = smb_query_pathname(sr, node, B_TRUE, qinfo);
 834                 break;
 835         case SMB_QUERY_FILE_NAME_INFO:
 836         case SMB_FILE_NAME_INFORMATION:
 837                 rc = smb_query_pathname(sr, node, B_FALSE, qinfo);
 838                 break;
 839         case SMB_QUERY_FILE_ALT_NAME_INFO:
 840         case SMB_FILE_ALT_NAME_INFORMATION:
 841                 smb_query_shortname(node, qinfo);
 842                 break;
 843         default:
 844                 break;
 845         }
 846 
 847         if (rc != 0) {
 848                 smbsr_errno(sr, rc);
 849                 return (-1);
 850         }
 851         return (0);
 852 }
 853 
 854 /*
 855  * smb_query_pathname
 856  *
 857  * Determine the absolute pathname of 'node' within the share.
 858  * For some levels (e.g. ALL_INFO) the pathname should include the
 859  * sharename for others (e.g. NAME_INFO) the pathname should be
 860  * relative to the share.
 861  * For example if the node represents file "test1.txt" in directory
 862  * "dir1" on share "share1"
 863  * - if include_share is TRUE the pathname would be: \share1\dir1\test1.txt
 864  * - if include_share is FALSE the pathname would be: \dir1\test1.txt
 865  *
 866  * For some reason NT will not show the security tab in the root
 867  * directory of a mapped drive unless the filename length is greater
 868  * than one. So if the length is 1 we set it to 2 to persuade NT to
 869  * show the tab. It should be safe because of the null terminator.
 870  */
 871 static int
 872 smb_query_pathname(smb_request_t *sr, smb_node_t *node, boolean_t include_share,
 873     smb_queryinfo_t *qinfo)
 874 {
 875         smb_tree_t *tree = sr->tid_tree;
 876         char *buf = qinfo->qi_name;
 877         size_t buflen = MAXPATHLEN;
 878         size_t len;
 879         int rc;
 880 
 881         if (include_share) {
 882                 len = snprintf(buf, buflen, "\\%s", tree->t_sharename);
 883                 if (len == (buflen - 1))
 884                         return (ENAMETOOLONG);
 885 
 886                 buf += len;
 887                 buflen -= len;
 888         }
 889 
 890         if (node == tree->t_snode) {
 891                 if (!include_share)
 892                         (void) strlcpy(buf, "\\", buflen);
 893                 return (0);
 894         }
 895 
 896         rc =  smb_node_getshrpath(node, tree, buf, buflen);
 897         if (rc == 0) {
 898                 qinfo->qi_namelen =
 899                     smb_ascii_or_unicode_strlen(sr, qinfo->qi_name);
 900                 if (qinfo->qi_namelen == 1)
 901                         qinfo->qi_namelen = 2;
 902         }
 903         return (rc);
 904 }
 905 
 906 /*
 907  * smb_query_shortname
 908  *
 909  * If the node is a named stream, use its associated
 910  * unnamed stream name to determine the shortname.
 911  * If a shortname is required (smb_needs_mangle()), generate it
 912  * using smb_mangle(), otherwise, convert the original name to
 913  * upper-case and return it as the alternative name.
 914  */
 915 void
 916 smb_query_shortname(smb_node_t *node, smb_queryinfo_t *qinfo)
 917 {
 918         char *namep;
 919 
 920         if (SMB_IS_STREAM(node))
 921                 namep = node->n_unode->od_name;
 922         else
 923                 namep = node->od_name;
 924 
 925         if (smb_needs_mangled(namep)) {
 926                 smb_mangle(namep, qinfo->qi_attr.sa_vattr.va_nodeid,
 927                     qinfo->qi_shortname, SMB_SHORTNAMELEN);
 928         } else {
 929                 (void) strlcpy(qinfo->qi_shortname, namep, SMB_SHORTNAMELEN);
 930                 (void) smb_strupr(qinfo->qi_shortname);
 931         }
 932 }
 933 
 934 /*
 935  * smb_query_pipeinfo
 936  *
 937  * Populate smb_queryinfo_t structure for SMB_FTYPE_MESG_PIPE
 938  * (This should become an smb_opipe function.)
 939  */
 940 static int
 941 smb_query_pipeinfo(smb_request_t *sr, smb_opipe_t *opipe, uint16_t infolev,
 942     smb_queryinfo_t *qinfo)
 943 {
 944         char *namep = opipe->p_name;
 945 
 946         (void) bzero(qinfo, sizeof (smb_queryinfo_t));
 947         qinfo->qi_node = NULL;
 948         qinfo->qi_attr.sa_vattr.va_nlink = 1;
 949         qinfo->qi_delete_on_close = 1;
 950         qinfo->qi_isdir = 0;
 951 
 952         if ((infolev == SMB_INFO_STANDARD) ||
 953             (infolev == SMB_INFO_QUERY_EA_SIZE) ||
 954             (infolev == SMB_QUERY_INFORMATION2)) {
 955                 qinfo->qi_attr.sa_dosattr = 0;
 956         } else {
 957                 qinfo->qi_attr.sa_dosattr = FILE_ATTRIBUTE_NORMAL;
 958         }
 959 
 960         /* If the leading \ is missing from the pipe name, add it. */
 961         if (*namep != '\\')
 962                 (void) snprintf(qinfo->qi_name, MAXNAMELEN, "\\%s", namep);
 963         else
 964                 (void) strlcpy(qinfo->qi_name, namep, MAXNAMELEN);
 965 
 966         qinfo->qi_namelen=
 967             smb_ascii_or_unicode_strlen(sr, qinfo->qi_name);
 968 
 969         return (0);
 970 }
 971 
 972 /*
 973  * smb_query_pipe_valid_infolev
 974  *
 975  * If the infolev is not valid for a message pipe, the error
 976  * information is set in sr and B_FALSE is returned.
 977  * Otherwise, returns B_TRUE.
 978  */
 979 static boolean_t
 980 smb_query_pipe_valid_infolev(smb_request_t *sr, uint16_t infolev)
 981 {
 982         switch (infolev) {
 983         case SMB_INFO_QUERY_ALL_EAS:
 984                 smbsr_error(sr, NT_STATUS_ACCESS_DENIED,
 985                     ERRDOS, ERROR_ACCESS_DENIED);
 986                 return (B_FALSE);
 987 
 988         case SMB_QUERY_FILE_ALT_NAME_INFO:
 989         case SMB_FILE_ALT_NAME_INFORMATION:
 990         case SMB_QUERY_FILE_STREAM_INFO:
 991         case SMB_FILE_STREAM_INFORMATION:
 992         case SMB_QUERY_FILE_COMPRESSION_INFO:
 993         case SMB_FILE_COMPRESSION_INFORMATION:
 994         case SMB_FILE_NETWORK_OPEN_INFORMATION:
 995         case SMB_FILE_ATTR_TAG_INFORMATION:
 996                 smbsr_error(sr, NT_STATUS_INVALID_PARAMETER,
 997                     ERRDOS, ERROR_INVALID_PARAMETER);
 998                 return (B_FALSE);
 999         }
1000 
1001         return (B_TRUE);
1002 }