Line data    Source code

       1             : /*
       2             :    Unix SMB/CIFS implementation.
       3             :    client error handling routines
       4             :    Copyright (C) Andrew Tridgell 1994-1998
       5             :    Copyright (C) Jelmer Vernooij 2003
       6             :    Copyright (C) Jeremy Allison 2006
       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 "libsmb/libsmb.h"
      24             : #include "../libcli/smb/smbXcli_base.h"
      25             : 
      26             : /****************************************************************************
      27             :  Return the 32-bit NT status code from the last packet.
      28             : ****************************************************************************/
      29             : 
      30           0 : NTSTATUS cli_nt_error(struct cli_state *cli)
      31             : {
      32             :         /* Deal with socket errors first. */
      33           0 :         if (!cli_state_is_connected(cli)) {
      34           0 :                 return NT_STATUS_CONNECTION_DISCONNECTED;
      35             :         }
      36             : 
      37           0 :         if (NT_STATUS_IS_DOS(cli->raw_status)) {
      38           0 :                 int e_class = NT_STATUS_DOS_CLASS(cli->raw_status);
      39           0 :                 int code = NT_STATUS_DOS_CODE(cli->raw_status);
      40           0 :                 return dos_to_ntstatus(e_class, code);
      41             :         }
      42             : 
      43           0 :         return cli->raw_status;
      44             : }
      45             : 
      46         456 : int cli_status_to_errno(NTSTATUS status)
      47             : {
      48           0 :         int err;
      49             : 
      50         456 :         if (NT_STATUS_IS_DOS(status)) {
      51           0 :                 uint8_t eclass = NT_STATUS_DOS_CLASS(status);
      52           0 :                 uint32_t ecode = NT_STATUS_DOS_CODE(status);
      53           0 :                 status = dos_to_ntstatus(eclass, ecode);
      54             :         }
      55             : 
      56         456 :         if (NT_STATUS_EQUAL(status, NT_STATUS_STOPPED_ON_SYMLINK)) {
      57             :                 /*
      58             :                  * Legacy code from cli_errno, see Samba up to 4.13: A
      59             :                  * special case for this Vista error. Since its
      60             :                  * high-order byte isn't 0xc0, it won't match
      61             :                  * correctly in map_errno_from_nt_status().
      62             :                  */
      63           0 :                 err = EACCES;
      64             :         } else {
      65         456 :                 err = map_errno_from_nt_status(status);
      66             :         }
      67             : 
      68         456 :         DBG_NOTICE("0x%"PRIx32" -> %d\n", NT_STATUS_V(status), err);
      69             : 
      70         456 :         return err;
      71             : }
      72             : 
      73             : /* Return a UNIX errno appropriate for the error received in the last
      74             :    packet. */
      75             : 
      76          16 : int cli_errno(struct cli_state *cli)
      77             : {
      78           0 :         bool connected;
      79           0 :         int err;
      80             : 
      81          16 :         connected = cli_state_is_connected(cli);
      82          16 :         if (!connected) {
      83           0 :                 return EPIPE;
      84             :         }
      85             : 
      86          16 :         err = cli_status_to_errno(cli->raw_status);
      87          16 :         return err;
      88             : }
      89             : 
      90             : /* Return true if the last packet was in error */
      91             : 
      92           0 : bool cli_is_error(struct cli_state *cli)
      93             : {
      94             :         /* A socket error is always an error. */
      95           0 :         if (!cli_state_is_connected(cli)) {
      96           0 :                 return true;
      97             :         }
      98             : 
      99           0 :         if (NT_STATUS_IS_DOS(cli->raw_status)) {
     100             :                 /* Return error if error class in non-zero */
     101           0 :                 uint8_t rcls = NT_STATUS_DOS_CLASS(cli->raw_status);
     102           0 :                 return rcls != 0;
     103             :         }
     104             : 
     105           0 :         return NT_STATUS_IS_ERR(cli->raw_status);
     106             : }
     107             : 
     108        1382 : bool cli_state_is_connected(struct cli_state *cli)
     109             : {
     110        1382 :         if (cli == NULL) {
     111           0 :                 return false;
     112             :         }
     113             : 
     114        1382 :         if (!cli->initialised) {
     115           0 :                 return false;
     116             :         }
     117             : 
     118        1382 :         return smbXcli_conn_is_connected(cli->conn);
     119             : }