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samba-mirror/source3/libsmb/clierror.c
Volker Lendecke 18ec1dab59 s3: Remove unused cli_get_nt_error
Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Mon May 23 16:54:21 CEST 2011 on sn-devel-104
2011-05-23 16:54:21 +02:00

343 lines
9.5 KiB
C

/*
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"
/*****************************************************
RAP error codes - a small start but will be extended.
XXX: Perhaps these should move into a common function because they're
duplicated in clirap2.c
*******************************************************/
static const struct {
int err;
const char *message;
} rap_errmap[] = {
{5, "RAP5: User has insufficient privilege" },
{50, "RAP50: Not supported by server" },
{65, "RAP65: Access denied" },
{86, "RAP86: The specified password is invalid" },
{2220, "RAP2220: Group does not exist" },
{2221, "RAP2221: User does not exist" },
{2226, "RAP2226: Operation only permitted on a Primary Domain Controller" },
{2237, "RAP2237: User is not in group" },
{2242, "RAP2242: The password of this user has expired." },
{2243, "RAP2243: The password of this user cannot change." },
{2244, "RAP2244: This password cannot be used now (password history conflict)." },
{2245, "RAP2245: The password is shorter than required." },
{2246, "RAP2246: The password of this user is too recent to change."},
/* these really shouldn't be here ... */
{0x80, "Not listening on called name"},
{0x81, "Not listening for calling name"},
{0x82, "Called name not present"},
{0x83, "Called name present, but insufficient resources"},
{0, NULL}
};
/****************************************************************************
Return a description of an SMB error.
****************************************************************************/
static const char *cli_smb_errstr(struct cli_state *cli)
{
return smb_dos_errstr(cli->inbuf);
}
/****************************************************************************
Convert a socket error into an NTSTATUS.
****************************************************************************/
static NTSTATUS cli_smb_rw_error_to_ntstatus(struct cli_state *cli)
{
switch(cli->smb_rw_error) {
case SMB_READ_TIMEOUT:
return NT_STATUS_IO_TIMEOUT;
case SMB_READ_EOF:
return NT_STATUS_END_OF_FILE;
/* What we shoud really do for read/write errors is convert from errno. */
/* FIXME. JRA. */
case SMB_READ_ERROR:
return NT_STATUS_INVALID_NETWORK_RESPONSE;
case SMB_WRITE_ERROR:
return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
case SMB_READ_BAD_SIG:
return NT_STATUS_INVALID_PARAMETER;
case SMB_NO_MEMORY:
return NT_STATUS_NO_MEMORY;
default:
break;
}
return NT_STATUS_UNSUCCESSFUL;
}
/***************************************************************************
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;
uint32 flgs2 = SVAL(cli->inbuf,smb_flg2), errnum;
uint8 errclass;
int i;
char *result;
if (!cli->initialised) {
fstrcpy(cli_error_message, "[Programmer's error] cli_errstr called on unitialized cli_stat struct!\n");
goto done;
}
/* Was it server socket error ? */
if (cli->fd == -1 && cli->smb_rw_error) {
switch(cli->smb_rw_error) {
case SMB_READ_TIMEOUT:
slprintf(cli_error_message, sizeof(cli_error_message) - 1,
"Call timed out: server did not respond after %d milliseconds",
cli->timeout);
break;
case SMB_READ_EOF:
slprintf(cli_error_message, sizeof(cli_error_message) - 1,
"Call returned zero bytes (EOF)" );
break;
case SMB_READ_ERROR:
slprintf(cli_error_message, sizeof(cli_error_message) - 1,
"Read error: %s", strerror(errno) );
break;
case SMB_WRITE_ERROR:
slprintf(cli_error_message, sizeof(cli_error_message) - 1,
"Write error: %s", strerror(errno) );
break;
case SMB_READ_BAD_SIG:
slprintf(cli_error_message, sizeof(cli_error_message) - 1,
"Server packet had invalid SMB signature!");
break;
case SMB_NO_MEMORY:
slprintf(cli_error_message, sizeof(cli_error_message) - 1,
"Out of memory");
break;
default:
slprintf(cli_error_message, sizeof(cli_error_message) - 1,
"Unknown error code %d\n", cli->smb_rw_error );
break;
}
goto done;
}
/* Case #1: RAP error */
if (cli->rap_error) {
for (i = 0; rap_errmap[i].message != NULL; i++) {
if (rap_errmap[i].err == cli->rap_error) {
return rap_errmap[i].message;
}
}
slprintf(cli_error_message, sizeof(cli_error_message) - 1, "RAP code %d",
cli->rap_error);
goto done;
}
/* Case #2: 32-bit NT errors */
if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
NTSTATUS status = NT_STATUS(IVAL(cli->inbuf,smb_rcls));
return nt_errstr(status);
}
cli_dos_error(cli, &errclass, &errnum);
/* Case #3: SMB error */
return cli_smb_errstr(cli);
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)
{
int flgs2 = SVAL(cli->inbuf,smb_flg2);
/* Deal with socket errors first. */
if (cli->fd == -1 && cli->smb_rw_error) {
return cli_smb_rw_error_to_ntstatus(cli);
}
if (!(flgs2 & FLAGS2_32_BIT_ERROR_CODES)) {
int e_class = CVAL(cli->inbuf,smb_rcls);
int code = SVAL(cli->inbuf,smb_err);
return dos_to_ntstatus(e_class, code);
}
return NT_STATUS(IVAL(cli->inbuf,smb_rcls));
}
/****************************************************************************
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)
{
int flgs2;
if(!cli->initialised) {
return;
}
/* Deal with socket errors first. */
if (cli->fd == -1 && cli->smb_rw_error) {
NTSTATUS status = cli_smb_rw_error_to_ntstatus(cli);
ntstatus_to_dos( status, eclass, ecode);
return;
}
flgs2 = SVAL(cli->inbuf,smb_flg2);
if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
NTSTATUS ntstatus = NT_STATUS(IVAL(cli->inbuf, smb_rcls));
ntstatus_to_dos(ntstatus, eclass, ecode);
return;
}
*eclass = CVAL(cli->inbuf,smb_rcls);
*ecode = SVAL(cli->inbuf,smb_err);
}
/* 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)
{
uint32 flgs2 = SVAL(cli->inbuf,smb_flg2), rcls = 0;
/* A socket error is always an error. */
if (cli->fd == -1 && cli->smb_rw_error != 0) {
return True;
}
if (flgs2 & FLAGS2_32_BIT_ERROR_CODES) {
/* Return error is error bits are set */
rcls = IVAL(cli->inbuf, smb_rcls);
return (rcls & 0xF0000000) == 0xC0000000;
}
/* Return error if error class in non-zero */
rcls = CVAL(cli->inbuf, smb_rcls);
return rcls != 0;
}
/* Return true if the last error was an NT error */
bool cli_is_nt_error(struct cli_state *cli)
{
uint32 flgs2 = SVAL(cli->inbuf,smb_flg2);
/* A socket error is always an NT error. */
if (cli->fd == -1 && cli->smb_rw_error != 0) {
return True;
}
return cli_is_error(cli) && (flgs2 & FLAGS2_32_BIT_ERROR_CODES);
}
/* Return true if the last error was a DOS error */
bool cli_is_dos_error(struct cli_state *cli)
{
uint32 flgs2 = SVAL(cli->inbuf,smb_flg2);
/* A socket error is always a DOS error. */
if (cli->fd == -1 && cli->smb_rw_error != 0) {
return True;
}
return cli_is_error(cli) && !(flgs2 & FLAGS2_32_BIT_ERROR_CODES);
}
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;
}