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A u16string is supposed to contain UTF‐16 code units, but
ndr_pull_u16string() and ndr_push_u16string() fail to correctly ensure
this on big‐endian systems. Code that relies on the u16string array
containing correct values will then fail.
Fix ndr_pull_u16string() and ndr_push_u16string() to work on big‐endian
systems, ensuring that other code can use these strings without having
to worry about first encoding them to little‐endian.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
$cvar could be an expression such as ‘1 << 10’. In such cases this cast
presumably was intended to apply to the entire expression, not just to
the ‘1’.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Pidl will generate code like the following:
py_out_2 = PyLong_FromLong((uint16_t)*r->out.out[out_cntr_2]);
As the array subscripting operator has a higher precedence than the
indirection (derference) operator, the argument will be evaluated as
(uint16_t)*(r->out.out[out_cntr_2]), which is wrong.
Fix Pidl to generate the following code instead:
py_out_2 = PyLong_FromLong((uint16_t)(*r->out.out)[out_cntr_2]);
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This type represents a UTF‐16–encoded string. These strings are kept
UTF‐16–encoded rather than converted to the Unix charset to be stored in
memory; this avoids issues regarding NULL termination and conversion
between character sets. We want to be able to handle strings that are
not valid UTF‐16.
Not bumping the NDR ABI version, because there hasn’t been an NDR
release since commit c4f281e9ae.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This gives us thirty‐two new LIBNDR_ flags to play with.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Instead of ‘int’ or ‘uint32_t’, neither of which convey much meaning,
consistently use a newly added type to hold NDR_ flags.
Update the NDR 4.0.0 ABI.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
The LIBNDR_FLAG_ namespace is getting dangerously full, with only a
single flag value (1 << 9) remaining for use. After that flag is put
into use, we won’t be able to add any new flags without increasing the
flag width to 64‐bit.
Up to now we’ve used a haphazard mix of int, unsigned, and uint32_t to
store these flags. Introduce a new type, ‘libndr_flags’, to be used
consistently to hold LIBNDR flags. If in the future we find we need to
move to 64‐bit flags, this type gives us an opportunity to do that.
Bump the NDR version to 4.0.0 — an major version increment, for we’re
changing the function ABI and adding the new symbol
ndr_print_libndr_flags.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We must parenthesize each expression that is to be cast to a specific
type, otherwise the cast will apply to only part of the full expression.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=9914
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We must parenthesize each expression that is to be cast to a specific
type, otherwise the cast will apply to only part of the full expression.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=9914
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
make sure hang test calls Parse::Pidl::Typelist::LoadIdl which triggers
part of the hang
Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Under some circumstances 'can_contain_deferred' & 'align_type functions' can
loop.
This prevents a hang when processing sample idl like
interface hang
{
typedef [public] struct {
wsp_cbasestoragevariant variant[NUM_ENTRIES];
} vt_variant_wrap;
typedef [public,nodiscriminant,switch_type(uint16)] union {
[case(VT_I1)] int8 vt_i1;
[case(VT_VARIANT)] vt_variant_wrap vt_variant_wrap;
} variant_types;
typedef [public] struct {
[switch_is(vtype)] variant_types vvalue;
} wsp_cbasestoragevariant;
};
which will hang with the following command
pidl --header --ndr-parser -- foo.idl
Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This function does not exist yet, but Wireshark can implement it if they
ever choose to regenerate their NDR dissectors.
Signed-off-by: Joseph Sutton <josephsutton@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>
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>
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>
Manually written code will handle this differently, but for generated code
this will create and free the context.
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>
We get these warnings-as-errors:
librpc/gen_ndr/py_netlogon.c:61903:53: error: stray ‘\’ in program
61903 | PyErr_Format(PyExc_TypeError, "Expected type %s",\ //<PIDL> Parse::Pidl::Samba4::Python::ConvertObjectFromPythonData lib/Parse/Pidl/Samba4/Python.pm:2005
but the '\' is unnecessary and unconventional anyway, since we're in a
function argument list.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Fri Feb 3 03:27:54 UTC 2023 on atb-devel-224
This is a big patch, but all it does is replace all "p->session_info"
with "session_info" after introducing a local variable from
dcesrv_call_session_info(p->dce_call).
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Only used in pipe_access_check(), superseded by dcesrv_call_auth_info()
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This is the big switch to use samba-dcerpcd for the RPC services in
source3/. It is a pretty big and unordered patch, but I don't see a
good way to split this up into more manageable pieces without
sacrificing bisectability even more. Probably I could cut out a few
small ones, but a major architechtural switch like this will always be
messy.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
In samba3 it is possible to run some services externally, for example:
rpc_daemon:lsasd = fork
rpc_server:netlogon = disabled
rpc_server:samr = external
rpc_server:lsarpc = external
The external services running in separate processes have to use its own
dedicated ncalrpc endpoint, otherwise will race with main smbd serving the
embedded services to accept connections on ncalrpc default socket. If the
connection ends in an external process and the client tries to bind to an
interface not registered there (like winreg for example) the bind will fail.
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Tue Sep 21 11:00:01 UTC 2021 on sn-devel-184
In samba3 it is possible to disable RPC services, for exapmle:
rpc_server:netlogon = disabled
If a service is disabled do not register the interface neither create its
endpoint.
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Volker Lendecke <vl@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 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>
When obtaining a reference to items in an assigned-from list, ensure
that we do not try to use the first element of the inline array as a
talloc context, but instead use the talloc context associated with the
Python object.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14065
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Fri May 28 09:50:02 UTC 2021 on sn-devel-184
The talloc memory context referenced by the pipe_struct mem_ctx member is used
as talloc parent for RPC response data by the RPC service implementations.
In Samba versions up to 4.10 all talloc children of p->mem_ctx were freed after
a RPC response was delivered by calling talloc_free_children(p->mem_ctx). Commit
60fa8e2552 removed this call which resulted in all
memory allocations on this context not getting released, which can consume
significant memory in long running RPC connections.
Instead of putting the talloc_free_children(p->mem_ctx) back, just use the
mem_ctx argument of the ${pipename}_op_dispatch_internal() function which is a
dcesrv_call_state object created by dcesrv_process_ncacn_packet() and released
by the RPC server when the RPC request processing is finished.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14675
CI: https://gitlab.com/samba-team/samba/-/merge_requests/1861
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
