source4/libcli/smb2/tcon.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    SMB2 client tree handling
   5
   6    Copyright (C) Andrew Tridgell 2005
   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 "libcli/smb2/smb2.h"
  24 #include "libcli/smb2/smb2_calls.h"
  25
  26 /*
  27   initialise a smb2_session structure
  28  */
  29 struct smb2_tree *smb2_tree_init(struct smb2_session *session,
  30                                  TALLOC_CTX *parent_ctx, bool primary)
  31 {
  32         struct smb2_tree *tree;
  33
  34         tree = talloc_zero(parent_ctx, struct smb2_tree);
  35         if (!session) {
  36                 return NULL;
  37         }
  38         if (primary) {
  39                 tree->session = talloc_steal(tree, session);
  40         } else {
  41                 tree->session = talloc_reference(tree, session);
  42         }
  43         return tree;
  44 }
  45
  46 /*
  47   send a tree connect
  48 */
  49 struct smb2_request *smb2_tree_connect_send(struct smb2_tree *tree,
  50                                             struct smb2_tree_connect *io)
  51 {
  52         struct smb2_request *req;
  53         NTSTATUS status;
  54
  55         req = smb2_request_init(tree->session->transport, SMB2_OP_TCON,
  56                                 0x08, true, 0);
  57         if (req == NULL) return NULL;
  58
  59         SBVAL(req->out.hdr,  SMB2_HDR_SESSION_ID, tree->session->uid);
  60         req->session = tree->session;
  61
  62         SSVAL(req->out.body, 0x02, io->in.reserved);
  63         status = smb2_push_o16s16_string(&req->out, 0x04, io->in.path);
  64         if (!NT_STATUS_IS_OK(status)) {
  65                 talloc_free(req);
  66                 return NULL;
  67         }
  68
  69         smb2_transport_send(req);
  70
  71         return req;
  72 }
  73
  74
  75 /*
  76   recv a tree connect reply
  77 */
  78 NTSTATUS smb2_tree_connect_recv(struct smb2_request *req, struct smb2_tree_connect *io)
  79 {
  80         if (!smb2_request_receive(req) ||
  81             smb2_request_is_error(req)) {
  82                 return smb2_request_destroy(req);
  83         }
  84
  85         SMB2_CHECK_PACKET_RECV(req, 0x10, false);
  86
  87         io->out.tid      = IVAL(req->in.hdr,  SMB2_HDR_TID);
  88
  89         io->out.share_type  = CVAL(req->in.body, 0x02);
  90         io->out.reserved    = CVAL(req->in.body, 0x03);
  91         io->out.flags       = IVAL(req->in.body, 0x04);
  92         io->out.capabilities= IVAL(req->in.body, 0x08);
  93         io->out.access_mask = IVAL(req->in.body, 0x0C);
  94
  95         if (io->out.capabilities & ~SMB2_CAP_ALL) {
  96                 DEBUG(0,("Unknown capabilities mask 0x%x\n", io->out.capabilities));
  97         }
  98         if (io->out.flags & ~SMB2_SHAREFLAG_ALL) {
  99                 DEBUG(0,("Unknown tcon shareflag 0x%x\n", io->out.flags));
 100         }
 101
 102         return smb2_request_destroy(req);
 103 }
 104
 105 /*
 106   sync tree connect request
 107 */
 108 NTSTATUS smb2_tree_connect(struct smb2_tree *tree, struct smb2_tree_connect *io)
 109 {
 110         struct smb2_request *req = smb2_tree_connect_send(tree, io);
 111         return smb2_tree_connect_recv(req, io);
 112 }