mirror of
https://github.com/samba-team/samba.git
synced 2024-12-28 07:21:54 +03:00
fcbfc7ad06
- NTLM2 support in the server
- KEY_EXCH support in the server
- variable length session keys.
In detail:
- NTLM2 is an extension of NTLMv1, that is compatible with existing
domain controllers (unlike NTLMv2, which requires a DC upgrade).
* This is known as 'NTLMv2 session security' *
(This is not yet implemented on the RPC pipes however, so there may
well still be issues for PDC setups, particuarly around password
changes. We do not fully understand the sign/seal implications of
NTLM2 on RPC pipes.)
This requires modifications to our authentication subsystem, as we
must handle the 'challege' input into the challenge-response algorithm
being changed. This also needs to be turned off for
'security=server', which does not support this.
- KEY_EXCH is another 'security' mechanism, whereby the session key
actually used by the server is sent by the client, rather than being
the shared-secret directly or indirectly.
- As both these methods change the session key, the auth subsystem
needed to be changed, to 'override' session keys provided by the
backend.
- There has also been a major overhaul of the NTLMSSP subsystem, to merge the 'client' and 'server' functions, so they both operate on a single structure. This should help the SPNEGO implementation.
- The 'names blob' in NTLMSSP is always in unicode - never in ascii.
Don't make an ascii version ever.
- The other big change is to allow variable length session keys. We
have always assumed that session keys are 16 bytes long - and padded
to this length if shorter. However, Kerberos session keys are 8 bytes
long, when the krb5 login uses DES.
* This fix allows SMB signging on machines not yet running MIT KRB5 1.3.1. *
- Add better DEBUG() messages to ntlm_auth, warning administrators of
misconfigurations that prevent access to the privileged pipe. This
should help reduce some of the 'it just doesn't work' issues.
- Fix data_blob_talloc() to behave the same way data_blob() does when
passed a NULL data pointer. (just allocate)
REMEMBER to make clean after this commit - I have changed plenty of data structures...
(This used to be commit f3bbc87b0d)
116 lines
3.1 KiB
C
116 lines
3.1 KiB
C
/*
|
|
Unix SMB/CIFS implementation.
|
|
Easy management of byte-length data
|
|
Copyright (C) Andrew Tridgell 2001
|
|
Copyright (C) Andrew Bartlett 2001
|
|
|
|
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 2 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, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include "includes.h"
|
|
|
|
/*******************************************************************
|
|
free() a data blob
|
|
*******************************************************************/
|
|
static void free_data_blob(DATA_BLOB *d)
|
|
{
|
|
if ((d) && (d->free)) {
|
|
SAFE_FREE(d->data);
|
|
}
|
|
}
|
|
|
|
/*******************************************************************
|
|
construct a data blob, must be freed with data_blob_free()
|
|
you can pass NULL for p and get a blank data blob
|
|
*******************************************************************/
|
|
DATA_BLOB data_blob(const void *p, size_t length)
|
|
{
|
|
DATA_BLOB ret;
|
|
|
|
if (!length) {
|
|
ZERO_STRUCT(ret);
|
|
return ret;
|
|
}
|
|
|
|
if (p) {
|
|
ret.data = smb_xmemdup(p, length);
|
|
} else {
|
|
ret.data = smb_xmalloc(length);
|
|
}
|
|
ret.length = length;
|
|
ret.free = free_data_blob;
|
|
return ret;
|
|
}
|
|
|
|
/*******************************************************************
|
|
construct a data blob, using supplied TALLOC_CTX
|
|
*******************************************************************/
|
|
DATA_BLOB data_blob_talloc(TALLOC_CTX *mem_ctx, const void *p, size_t length)
|
|
{
|
|
DATA_BLOB ret;
|
|
|
|
if (!length) {
|
|
ZERO_STRUCT(ret);
|
|
return ret;
|
|
}
|
|
|
|
if (p) {
|
|
ret.data = talloc_memdup(mem_ctx, p, length);
|
|
if (ret.data == NULL)
|
|
smb_panic("data_blob_talloc: talloc_memdup failed.\n");
|
|
} else {
|
|
ret.data = talloc(mem_ctx, length);
|
|
if (ret.data == NULL)
|
|
smb_panic("data_blob_talloc: talloc failed.\n");
|
|
}
|
|
|
|
ret.length = length;
|
|
ret.free = NULL;
|
|
return ret;
|
|
}
|
|
|
|
/*******************************************************************
|
|
free a data blob
|
|
*******************************************************************/
|
|
void data_blob_free(DATA_BLOB *d)
|
|
{
|
|
if (d) {
|
|
if (d->free) {
|
|
(d->free)(d);
|
|
}
|
|
d->length = 0;
|
|
}
|
|
}
|
|
|
|
/*******************************************************************
|
|
clear a DATA_BLOB's contents
|
|
*******************************************************************/
|
|
static void data_blob_clear(DATA_BLOB *d)
|
|
{
|
|
if (d->data) {
|
|
memset(d->data, 0, d->length);
|
|
}
|
|
}
|
|
|
|
/*******************************************************************
|
|
free a data blob and clear its contents
|
|
*******************************************************************/
|
|
void data_blob_clear_free(DATA_BLOB *d)
|
|
{
|
|
data_blob_clear(d);
|
|
data_blob_free(d);
|
|
}
|
|
|