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Soon we will get Conditional ACEs and Resource Attribute ACES, each of
which have trailing bytes at the end of the ACE. Here's a diagram:
____ The ACE size field may indicate a size bigger
.type / | than the known parts, even when you take
.flags / | rounding to a multiple of four into account.
.size --' | This extra data is meaningful in some ACEs.
.access_mask |
.trustee (sid) _| <- known data ends here.
:
"coda" ___: <- the trailing part, Zero size unless the size
field points beyond the end of the known data.
Probably empty for ordinary ACE types.
Until now we have thrown away these extra bytes, because they have no
meaning in the ACE types we recognise. But with conditional and
resource attribute ACEs we need to catch and process these bytes, so
we add an extra field for that.
Thus we can drop the manually written ndr_pull_security_ace() that
discarded the trailing bytes, because we just allow it to be pulled
into an unused blob. In the very common case, the blob will be empty.
Microsoft does not use a common name across different ACE types to
describe this end-data -- "coda" is a Samba term.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This type behaves like a signed variant of ‘hyper’. Unlike the existing
‘dlong’ type, which has four byte alignment, ‘int64’ is aligned to eight
bytes.
Bump the NDR version to 3.0.1.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15452
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We are about to add a new enumeration constant (NUM_CHARSETS) to
charset_t. To do that we must have a default case in this switch
statement, or the compiler will refuse to compile it, stating that we
haven’t handled all the cases.
The alternative, adding a case for NUM_CHARSETS, would just look silly.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
The arguments to these macros are occasionally of type size_t.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
max_length will always be greater than one, so we can use the plural.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
As hinted in f2416493c0 the DCOM and WMI
IDL is now unused. These generate code with PIDL, costing a small
amount of build time but more importantly are fuzzed, which costs an
ongoing amount of CPU time as oss-fuzz tries to find parsing issues.
We do not need to continue this waste, and these can be restored
if this effort is ever to start again.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
If ‘size’ was equal to UINT32_MAX, the expression ‘size+1’ could
overflow to zero.
This could result in inadequate memory being allocated, which could
cause ndr_pull_compression_xpress_huff_raw_chunk() to overflow memory
with zero bytes.
Credit to OSS-Fuzz.
REF: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=57728
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15415
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
This allows the push routine to cache the chosen compression algorithm in
the struct ndr_compression_state in ndr->cstate and so, in claims, avoid
calling ndr_size_CLAIMS_SET_NDR() three times per compression (more in the
overall push).
As claims is now the primary use of the libndr compression code, this is
a reasonable tradeoff compared to the other callers who have more static
algorithm selections.
By removing the struct ndr_compression_state **state argument from
ndr_push_compression_state_init() we make clear that the ndr->cstate
belongs to this NDR context, and this context alone.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
If a talloc function returns NULL, indicating failure, the failure could
be masked by the next talloc call allocating on the NULL context.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
This ensures our python layer and C layer (in the KDC, when implementated)
use the same compression logic and so allows us to test the production
compression via the IDL-generated interfaces.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
This means that the generic_mszip_free() will still be called on failure.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Rather than just pick the next value we re-arrange compression values
in libndr to be memnonic to values in MS Windows ntifs.h
This helps avoid confusing developers who compare these
algorithms with local the MS Windows interface.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Removing the unused arguments avoids thier value being calculated in the
PIDL generated code, which can be expensive.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
This will help make a mapping from wire-specified compression
algorithms to our available choices safer by allowing an invalid
choice to map to NDR_COMPRESSION_INVALID
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
DRSUAPI_COMPRESSION_TYPE_XPRESS is not MS-XCA nor is it implemented by
lzexpress_compress(), so disconnect from that algorithm.
This avoids someone fixing lzxpress_compress() to work for DRSUAPI
and breaking claims support.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Bumping the ABI to 3.0.0
This is enhancement of NDR_PRINT_DEBUG macro with following new features:
* debug level can be specified (NDR_PRINT_DEBUG always uses level 1)
* the trace header shows the location and function of the caller
instead of function 'ndr_print_debug', which is not really useful.
Signed-off-by: Pavel Filipenský <pfilipen@redhat.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
convert_string_talloc_handle() tries to play an the safe side
and always returns a null terminated array.
But for NDR we need to be correct on the wire...
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14956
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
These appear when PAC_UPN_DNS_FLAG_HAS_SAM_NAME_AND_SID is set.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14835
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
This function maintains an arbitrary mapping of GUID strings to
integers. This is required as only integers can be used as
discriminators for autogenerated ODJ unions.
Guenther
Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
In many cases these can and should be consumed as soon as
they are used.
This is not a complete fix, we don't clean up the array_size
token after using it split between an NDR_SCALARS and
an NDR_BUFFERS pass, but it is much better than it was
and helps the winbind case with a large number of groups
(eg 100,000) as otherwise we hit the 65535 NDR token limit.
(This is an arbitary Samba-only limit to avoid DoS conditions)
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14710
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
In many cases these can and should be consumed as soon as
they are used.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14710
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
This pointer is only used to find the right token in the list
so can be declared const.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14710
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
This makes it safer to change our code to remove tokens after use
if failing to obtain a token would result in an error.
This means changing ndr_get_array_size() and ndr_get_array_length()
to also return an error code.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14710
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
These patches are to address an issue unpacking a very large
winbind.wbint_Principals array (100,000).
We need the NDR_TOKEN_MAX_LIST_SIZE value exposed as
otherwise a well-meaning incrase of this value would
invalidate the test.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14710
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
This is set in the call just above and otherwise we will (in the next commit)
need an intermediate variable once we need to check error codes from
ndr_get_array_size().
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14710
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare]
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Return "bool" instead of NTSTATUS, use hex_byte() instead of
read_hex_bytes(). And parse directly into a struct GUID instead of the
components. 99 lines less code.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Samuel Cabrero <scabrero@samba.org>
