source3/libsmb/clisigning.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    SMB Signing Code
   4    Copyright (C) Jeremy Allison 2003.
   5    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2002-2003
   6    Copyright (C) Stefan Metzmacher 2009
   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 "smb_signing.h"
  24
  25 bool cli_simple_set_signing(struct cli_state *cli,
  26                             const DATA_BLOB user_session_key,
  27                             const DATA_BLOB response)
  28 {
  29         bool ok;
  30
  31         ok = smb_signing_activate(cli->signing_state,
  32                                   user_session_key,
  33                                   response);
  34         if (!ok) {
  35                 return false;
  36         }
  37
  38         cli->readbraw_supported = false;
  39         cli->writebraw_supported = false;
  40
  41         return true;
  42 }
  43
  44 bool cli_temp_set_signing(struct cli_state *cli)
  45 {
  46         return smb_signing_set_bsrspyl(cli->signing_state);
  47 }
  48
  49 void cli_calculate_sign_mac(struct cli_state *cli, char *buf, uint32_t *seqnum)
  50 {
  51         *seqnum = smb_signing_next_seqnum(cli->signing_state, false);
  52         smb_signing_sign_pdu(cli->signing_state, (uint8_t *)buf, *seqnum);
  53 }
  54
  55 bool cli_check_sign_mac(struct cli_state *cli, const char *buf, uint32_t seqnum)
  56 {
  57         bool ok;
  58
  59         ok = smb_signing_check_pdu(cli->signing_state,
  60                                    (const uint8_t *)buf,
  61                                    seqnum);
  62
  63         if (!ok) {
  64                 return false;
  65         }
  66
  67         return true;
  68 }
  69
  70 void cli_set_signing_negotiated(struct cli_state *cli)
  71 {
  72         smb_signing_set_negotiated(cli->signing_state);
  73 }
  74
  75 bool client_is_signing_on(struct cli_state *cli)
  76 {
  77         return smb_signing_is_active(cli->signing_state);
  78 }
  79
  80 bool client_is_signing_allowed(struct cli_state *cli)
  81 {
  82         return smb_signing_is_allowed(cli->signing_state);
  83 }
  84
  85 bool client_is_signing_mandatory(struct cli_state *cli)
  86 {
  87         return smb_signing_is_mandatory(cli->signing_state);
  88 }