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             : 
      47             : /****************************************************************************
      48             :  Return the DOS error from the last packet - an error class and an error
      49             :  code.
      50             : ****************************************************************************/
      51             : 
      52           0 : void cli_dos_error(struct cli_state *cli, uint8_t *eclass, uint32_t *ecode)
      53             : {
      54           0 :         if (!cli_state_is_connected(cli)) {
      55           0 :                 *eclass = ERRDOS;
      56           0 :                 *ecode = ERRnotconnected;
      57           0 :                 return;
      58             :         }
      59             : 
      60           0 :         if (!NT_STATUS_IS_DOS(cli->raw_status)) {
      61           0 :                 ntstatus_to_dos(cli->raw_status, eclass, ecode);
      62           0 :                 return;
      63             :         }
      64             : 
      65           0 :         *eclass = NT_STATUS_DOS_CLASS(cli->raw_status);
      66           0 :         *ecode = NT_STATUS_DOS_CODE(cli->raw_status);
      67             : }
      68             : 
      69           6 : int cli_status_to_errno(NTSTATUS status)
      70             : {
      71             :         int err;
      72             : 
      73           6 :         if (NT_STATUS_IS_DOS(status)) {
      74           0 :                 uint8_t eclass = NT_STATUS_DOS_CLASS(status);
      75           0 :                 uint32_t ecode = NT_STATUS_DOS_CODE(status);
      76           0 :                 status = dos_to_ntstatus(eclass, ecode);
      77             :         }
      78             : 
      79           6 :         if (NT_STATUS_EQUAL(status, NT_STATUS_STOPPED_ON_SYMLINK)) {
      80             :                 /*
      81             :                  * Legacy code from cli_errno, see Samba up to 4.13: A
      82             :                  * special case for this Vista error. Since its
      83             :                  * high-order byte isn't 0xc0, it won't match
      84             :                  * correctly in map_errno_from_nt_status().
      85             :                  */
      86           0 :                 err = EACCES;
      87             :         } else {
      88           6 :                 err = map_errno_from_nt_status(status);
      89             :         }
      90             : 
      91           6 :         DBG_NOTICE("0x%"PRIx32" -> %d\n", NT_STATUS_V(status), err);
      92             : 
      93           6 :         return err;
      94             : }
      95             : 
      96             : /* Return a UNIX errno appropriate for the error received in the last
      97             :    packet. */
      98             : 
      99           6 : int cli_errno(struct cli_state *cli)
     100             : {
     101             :         bool connected;
     102             :         int err;
     103             : 
     104           6 :         connected = cli_state_is_connected(cli);
     105           6 :         if (!connected) {
     106           0 :                 return EPIPE;
     107             :         }
     108             : 
     109           6 :         err = cli_status_to_errno(cli->raw_status);
     110           6 :         return err;
     111             : }
     112             : 
     113             : /* Return true if the last packet was in error */
     114             : 
     115           0 : bool cli_is_error(struct cli_state *cli)
     116             : {
     117             :         /* A socket error is always an error. */
     118           0 :         if (!cli_state_is_connected(cli)) {
     119           0 :                 return true;
     120             :         }
     121             : 
     122           0 :         if (NT_STATUS_IS_DOS(cli->raw_status)) {
     123             :                 /* Return error if error class in non-zero */
     124           0 :                 uint8_t rcls = NT_STATUS_DOS_CLASS(cli->raw_status);
     125           0 :                 return rcls != 0;
     126             :         }
     127             : 
     128           0 :         return NT_STATUS_IS_ERR(cli->raw_status);
     129             : }
     130             : 
     131             : /* Return true if the last error was an NT error */
     132             : 
     133           0 : bool cli_is_nt_error(struct cli_state *cli)
     134             : {
     135             :         /* A socket error is always an NT error. */
     136           0 :         if (!cli_state_is_connected(cli)) {
     137           0 :                 return true;
     138             :         }
     139             : 
     140           0 :         return cli_is_error(cli) && !NT_STATUS_IS_DOS(cli->raw_status);
     141             : }
     142             : 
     143             : /* Return true if the last error was a DOS error */
     144             : 
     145           0 : bool cli_is_dos_error(struct cli_state *cli)
     146             : {
     147             :         /* A socket error is always a DOS error. */
     148           0 :         if (!cli_state_is_connected(cli)) {
     149           0 :                 return true;
     150             :         }
     151             : 
     152           0 :         return cli_is_error(cli) && NT_STATUS_IS_DOS(cli->raw_status);
     153             : }
     154             : 
     155          24 : bool cli_state_is_connected(struct cli_state *cli)
     156             : {
     157          24 :         if (cli == NULL) {
     158           6 :                 return false;
     159             :         }
     160             : 
     161          18 :         if (!cli->initialised) {
     162           0 :                 return false;
     163             :         }
     164             : 
     165          18 :         return smbXcli_conn_is_connected(cli->conn);
     166             : }