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/*
Unix SMB/CIFS implementation.
client error handling routines
Copyright (C) Andrew Tridgell 1994-1998
Copyright (C) Jelmer Vernooij 2003
Copyright (C) Jeremy Allison 2006
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "libsmb/libsmb.h"
/***************************************************************************
Return an error message - either an NT error, SMB error or a RAP error.
Note some of the NT errors are actually warnings or "informational" errors
in which case they can be safely ignored.
****************************************************************************/
const char *cli_errstr(struct cli_state *cli)
{
fstring cli_error_message;
char *result;
if (!cli->initialised) {
fstrcpy(cli_error_message, "[Programmer's error] cli_errstr called on unitialized cli_stat struct!\n");
goto done;
}
/* Case #1: RAP error */
if (cli->rap_error) {
strlcpy(cli_error_message, win_errstr(W_ERROR(cli->rap_error)),
sizeof(cli_error_message));
goto done;
}
if (!cli_state_is_connected(cli) && NT_STATUS_IS_OK(cli->raw_status)) {
return nt_errstr(NT_STATUS_CONNECTION_DISCONNECTED);
}
return nt_errstr(cli->raw_status);
done:
result = talloc_strdup(talloc_tos(), cli_error_message);
SMB_ASSERT(result);
return result;
}
/****************************************************************************
Return the 32-bit NT status code from the last packet.
****************************************************************************/
NTSTATUS cli_nt_error(struct cli_state *cli)
{
/* Deal with socket errors first. */
if (!cli_state_is_connected(cli)) {
return NT_STATUS_CONNECTION_DISCONNECTED;
}
if (NT_STATUS_IS_DOS(cli->raw_status)) {
int e_class = NT_STATUS_DOS_CLASS(cli->raw_status);
int code = NT_STATUS_DOS_CODE(cli->raw_status);
return dos_to_ntstatus(e_class, code);
}
return cli->raw_status;
}
/****************************************************************************
Return the DOS error from the last packet - an error class and an error
code.
****************************************************************************/
void cli_dos_error(struct cli_state *cli, uint8 *eclass, uint32 *ecode)
{
if (!cli_state_is_connected(cli)) {
*eclass = ERRDOS;
*ecode = ERRnotconnected;
return;
}
if (!NT_STATUS_IS_DOS(cli->raw_status)) {
ntstatus_to_dos(cli->raw_status, eclass, ecode);
return;
}
*eclass = NT_STATUS_DOS_CLASS(cli->raw_status);
*ecode = NT_STATUS_DOS_CODE(cli->raw_status);
}
/* Return a UNIX errno appropriate for the error received in the last
packet. */
int cli_errno(struct cli_state *cli)
{
NTSTATUS status;
if (cli_is_nt_error(cli)) {
status = cli_nt_error(cli);
return map_errno_from_nt_status(status);
}
if (cli_is_dos_error(cli)) {
uint8 eclass;
uint32 ecode;
cli_dos_error(cli, &eclass, &ecode);
status = dos_to_ntstatus(eclass, ecode);
return map_errno_from_nt_status(status);
}
/*
* Yuck! A special case for this Vista error. Since its high-order
* byte isn't 0xc0, it doesn't match cli_is_nt_error() above.
*/
status = cli_nt_error(cli);
if (NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_INACCESSIBLE_SYSTEM_SHORTCUT)) {
return EACCES;
}
/* for other cases */
return EINVAL;
}
/* Return true if the last packet was in error */
bool cli_is_error(struct cli_state *cli)
{
/* A socket error is always an error. */
if (!cli_state_is_connected(cli)) {
return true;
}
if (NT_STATUS_IS_DOS(cli->raw_status)) {
/* Return error if error class in non-zero */
uint8_t rcls = NT_STATUS_DOS_CLASS(cli->raw_status);
return rcls != 0;
}
return NT_STATUS_IS_ERR(cli->raw_status);
}
/* Return true if the last error was an NT error */
bool cli_is_nt_error(struct cli_state *cli)
{
/* A socket error is always an NT error. */
if (!cli_state_is_connected(cli)) {
return true;
}
return cli_is_error(cli) && !NT_STATUS_IS_DOS(cli->raw_status);
}
/* Return true if the last error was a DOS error */
bool cli_is_dos_error(struct cli_state *cli)
{
/* A socket error is always a DOS error. */
if (!cli_state_is_connected(cli)) {
return true;
}
return cli_is_error(cli) && NT_STATUS_IS_DOS(cli->raw_status);
}
bool cli_state_is_connected(struct cli_state *cli)
{
if (cli == NULL) {
return false;
}
if (!cli->initialised) {
return false;
}
if (cli->fd == -1) {
return false;
}
return true;
}
void cli_state_disconnect(struct cli_state *cli)
{
if (cli->fd != -1) {
close(cli->fd);
}
cli->fd = -1;
}
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