Line data    Source code

       1             : /*
       2             :    Unix SMB/CIFS implementation.
       3             : 
       4             :    SMB2 Lease context handling
       5             : 
       6             :    Copyright (C) Stefan Metzmacher 2012
       7             :    Copyright (C) Volker Lendecke 2013
       8             : 
       9             :    This program is free software; you can redistribute it and/or modify
      10             :    it under the terms of the GNU General Public License as published by
      11             :    the Free Software Foundation; either version 3 of the License, or
      12             :    (at your option) any later version.
      13             : 
      14             :    This program is distributed in the hope that it will be useful,
      15             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      16             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      17             :    GNU General Public License for more details.
      18             : 
      19             :    You should have received a copy of the GNU General Public License
      20             :    along with this program.  If not, see <http://www.gnu.org/licenses/>.
      21             : */
      22             : 
      23             : #include "includes.h"
      24             : #include "../libcli/smb/smb_common.h"
      25             : 
      26        1154 : ssize_t smb2_lease_pull(const uint8_t *buf, size_t len,
      27             :                         struct smb2_lease *lease)
      28             : {
      29           0 :         int version;
      30             : 
      31        1154 :         switch (len) {
      32         976 :         case 32:
      33         976 :                 version = 1;
      34         976 :                 break;
      35         178 :         case 52:
      36         178 :                 version = 2;
      37         178 :                 break;
      38           0 :         default:
      39           0 :                 return -1;
      40             :         }
      41             : 
      42        1154 :         memcpy(&lease->lease_key, buf, 16);
      43        1154 :         lease->lease_state = IVAL(buf, 16);
      44        1154 :         lease->lease_flags = IVAL(buf, 20);
      45        1154 :         lease->lease_duration = BVAL(buf, 24);
      46        1154 :         lease->lease_version = version;
      47             : 
      48        1154 :         switch (version) {
      49         976 :         case 1:
      50         976 :                 ZERO_STRUCT(lease->parent_lease_key);
      51         976 :                 lease->lease_epoch = 0;
      52         976 :                 break;
      53         178 :         case 2:
      54         178 :                 memcpy(&lease->parent_lease_key, buf+32, 16);
      55         178 :                 lease->lease_epoch = SVAL(buf, 48);
      56         178 :                 break;
      57             :         }
      58             : 
      59        1154 :         return len;
      60             : }
      61             : 
      62        2158 : bool smb2_lease_push(const struct smb2_lease *lease, uint8_t *buf, size_t len)
      63             : {
      64           0 :         int version;
      65             : 
      66        2158 :         switch (len) {
      67        1830 :         case 32:
      68        1830 :                 version = 1;
      69        1830 :                 break;
      70         328 :         case 52:
      71         328 :                 version = 2;
      72         328 :                 break;
      73           0 :         default:
      74           0 :                 return false;
      75             :         }
      76             : 
      77        2158 :         memcpy(&buf[0], &lease->lease_key, 16);
      78        2158 :         SIVAL(buf, 16, lease->lease_state);
      79        2158 :         SIVAL(buf, 20, lease->lease_flags);
      80        2158 :         SBVAL(buf, 24, lease->lease_duration);
      81             : 
      82        2158 :         if (version == 2) {
      83         328 :                 memcpy(&buf[32], &lease->parent_lease_key, 16);
      84         328 :                 SIVAL(buf, 48, lease->lease_epoch);
      85             :         }
      86             : 
      87        2158 :         return true;
      88             : }
      89             : 
      90        1662 : bool smb2_lease_key_equal(const struct smb2_lease_key *k1,
      91             :                           const struct smb2_lease_key *k2)
      92             : {
      93        1662 :         return ((k1->data[0] == k2->data[0]) && (k1->data[1] == k2->data[1]));
      94             : }
      95             : 
      96        1294 : bool smb2_lease_equal(const struct GUID *g1,
      97             :                       const struct smb2_lease_key *k1,
      98             :                       const struct GUID *g2,
      99             :                       const struct smb2_lease_key *k2)
     100             : {
     101        1294 :         return GUID_equal(g1, g2) && smb2_lease_key_equal(k1, k2);
     102             : }