source3/smbd/smb2_glue.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Core SMB2 server
   4
   5    Copyright (C) Stefan Metzmacher 2009
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "smbd/smbd.h"
  23 #include "smbd/globals.h"
  24 #include "../libcli/smb/smb_common.h"
  25
  26 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req)
  27 {
  28         struct smb_request *smbreq;
  29         const uint8_t *inhdr = SMBD_SMB2_IN_HDR_PTR(req);
  30
  31         if (req->smb1req) {
  32                 smbreq = req->smb1req;
  33         } else {
  34                 smbreq = talloc_zero(req, struct smb_request);
  35                 if (smbreq == NULL) {
  36                         return NULL;
  37                 }
  38         }
  39
  40         smbreq->request_time = req->request_time;
  41         smbreq->vuid = req->session->compat->vuid;
  42         smbreq->tid = req->tcon->compat->cnum;
  43         smbreq->conn = req->tcon->compat;
  44         smbreq->sconn = req->sconn;
  45         smbreq->smbpid = (uint16_t)IVAL(inhdr, SMB2_HDR_PID);
  46         smbreq->flags2 = FLAGS2_UNICODE_STRINGS |
  47                          FLAGS2_32_BIT_ERROR_CODES |
  48                          FLAGS2_LONG_PATH_COMPONENTS |
  49                          FLAGS2_IS_LONG_NAME;
  50         if (IVAL(inhdr, SMB2_HDR_FLAGS) & SMB2_HDR_FLAG_DFS) {
  51                 smbreq->flags2 |= FLAGS2_DFS_PATHNAMES;
  52         }
  53         smbreq->mid = BVAL(inhdr, SMB2_HDR_MESSAGE_ID);
  54         smbreq->chain_fsp = req->compat_chain_fsp;
  55         smbreq->smb2req = req;
  56         req->smb1req = smbreq;
  57
  58         return smbreq;
  59 }
  60
  61 /*********************************************************
  62  Are there unread bytes for recvfile ?
  63 *********************************************************/
  64
  65 size_t smbd_smb2_unread_bytes(struct smbd_smb2_request *req)
  66 {
  67         if (req->smb1req) {
  68                 return req->smb1req->unread_bytes;
  69         }
  70         return 0;
  71 }
  72
  73 /*********************************************************
  74  Called from file_free() to remove any chained fsp pointers.
  75 *********************************************************/
  76
  77 void remove_smb2_chained_fsp(files_struct *fsp)
  78 {
  79         struct smbd_server_connection *sconn = fsp->conn->sconn;
  80         struct smbd_smb2_request *smb2req;
  81
  82         for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
  83                 if (smb2req->compat_chain_fsp == fsp) {
  84                         smb2req->compat_chain_fsp = NULL;
  85                 }
  86                 if (smb2req->smb1req && smb2req->smb1req->chain_fsp == fsp) {
  87                         smb2req->smb1req->chain_fsp = NULL;
  88                 }
  89         }
  90 }