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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>
Craft core structures to dispatch local calls in the same way as remote
ones, removing the special handling in the autogenerated code.
This is also necessary to drop s3 rpc handles implementation.
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Wed Apr 8 22:23:05 UTC 2020 on sn-devel-184
This allows us to end the use of Python 2/3 compatability macros.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
PyInt_Type is no longer a thing in Python3, we will remove the compatability
reference shortly.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
Since we moved to Python3, these have been dead code, and it is clearer
now that we have removed the compatability define.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
This will allow us to remove some unused code in the PIDL-generated
python bindings.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
To be used in rpcint_binding_handle, prepare to remove legacy api_struct
and S3 pidl generated code.
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Will be used by winspool to forward selected opnums to spoolss.
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Next commits will initialize the registered enpoint servers in S3 RPC
server, removing the rpc_{interface}_init calls. The legacy api_struct
registration will be registered by the enpoint server initialization
code generated by PIDL.
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We do not ship any perl modules in third_party at this time, so
this check is pointless and breaks the build for --bundled-libraries=ALL.
As reported by aaptel on https://gitlab.com/samba-team/samba/-/merge_requests/1104#note_281050331
This changes our autobuild script to cover this case in the
samba-static job.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
following 83ffe6752d, you get a build
error if you lack a system perl Parse::Yapp. Let's make it a configure
failure instead.
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): Sun Feb 2 10:09:11 UTC 2020 on sn-devel-184
This breaks the ABI so we merge this into the unreleased libndr-1.0.0.
The advantage of the new functions is there (except for print, which
is unchanged) is an error raised when the token is not found, so
we can be confident in the changes to the token behaviour.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13876
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Thu Dec 12 03:56:23 UTC 2019 on sn-devel-184
The set was within the switch, the get was before the switch.
The difference is shown when there is an empty default element.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13876
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
This avoids really long token lists for switch values
that will not be needed past this point.
The function name is changed to clarify what exactly is being
done here, and the old function is removed to ensure it is
not being used anywhere else.
Merge the removal of ndr_print_get_switch_value into
just-tagged librpc/ABI/ndr-1.0.0.sigs as this
has not been put into any release yet.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13876
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
This means what was previously a list becomes a single variable that
could be passed as a function paraemter, but this is avoided for now
because it would change the ABI and be more intrusive.
Before this, a client could cause a NDR token containing the swith level
to be allocated for each and every element in the array that they
promised they were sending (without having to actually send them).
Found by Michael Hanselmann using Honggfuzz and an fuzzer for Samba's
NDR layer.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13876
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
The next commits will register legacy api_struct when the endpoint server
is initialized. This commit adds a shutdown function which will be used
to unregister the legacy api_struct.
The shutdown function will be also used to replace the rpc_srv_callbacks
struct shutdown member used, for example, by the spoolss service to
cleanup before exiting.
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
The dcesrv_init_registered_ep_servers() will be used by the S3 server to
initialize all registered endpoint servers (for embedded services), and
the dcesrv_init_ep_server() function will be used by the external
daemons to initialize the required ones.
As serveral S3 services may require to initialize another one before
itself (svcctl and eventlog for example require winreg) a boolean flag is
added to track the initialization status.
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We only have ndrdump and the fuzzers set up for structures, not BITMAPS,
ENUMS etc.
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Tue Dec 10 17:45:46 UTC 2019 on sn-devel-184
This NDR fuzzer links with each "interface" in the IDL files to
create avsingle binary. This tries to matches what the fuzzing
engines desire.
It started as a copy of ndrdump but very little of that remains
in place.
The fancy build rules try to avoid needing a lof of boilerplate
in the wscript_build files and ensure new fuzzers are generated
and run when new IDL is added automatically.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Pair-programmed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
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): Tue Dec 10 04:16:31 UTC 2019 on sn-devel-184
- do not redeclare variables in the same scope.
- use $1 instead of \1, which perl just prefers.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
At level 0 there is no previous level so $pl is undefined thus so is ->{TYPE}
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Here we fix two bugs that cancelled each other out completely, so this
patch leaves us with exactly the same functionally as before.
Bug 1: In perl, return is *syntactically* a function.
That means 'return X or Y' is read as 'return(X) or Y', as in the
'open(X) or die "..."' construct -- Y is only evaluated if return
returns false. But return never returns, so Y is dead code. If in
doubt, try these:
perl -e "sub x {return 0 or die;} x"
perl -e "sub x {return (0 or die);} x"
What we *meant* here is 'return (X or Y)', BUT it turns out we were
confused -- the Y case was bogus.
Bug 2: string arrays never had "fast array logic" in the first place.
The fast array logic is for arrays of bytes, and can be fast (i.e.
memcpy) because there is no endianness to worry about. A string array
is an array of pointers not bytes.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Hex numbers in IDL are not parsed as numbers, resulting in warnings
like
Argument 0x2000 isn't numeric in numeric lt (<) at /home/douglas/src/samba/pidl/lib/Parse/Pidl/Samba4/NDR/Parser.pm line 981
not to mention problematic code. We add a utility function to convert
these numbers to numbers.
A typical difference this makes is:
--- old/default/librpc/gen_ndr/ndr_dcerpc.c 2019-11-30 23:40:32.915816967 +1300
+++ new/default/librpc/gen_ndr/ndr_dcerpc.c 2019-11-30 17:00:09.055733660 +1300
@@ -1893,7 +1893,7 @@
if (ndr_flags & NDR_SCALARS) {
NDR_CHECK(ndr_pull_align(ndr, 4));
NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &r->ReceiveWindowSize));
- if (r->ReceiveWindowSize > 0x40000) {
+ if (r->ReceiveWindowSize < 8192 || r->ReceiveWindowSize > 262144) {
return ndr_pull_error(ndr, NDR_ERR_RANGE, "value out of range");
}
NDR_CHECK(ndr_pull_trailer_align(ndr, 4));
Where the minimum ("0x2000" == 8192) was read as a string, thus
treated as zero.
The treatment as zero was introduced in 142b2a61f8
accidentially, which shows why warnings are important.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Warnings are good. If we turn on warnings with 'use warnings', we will
see bugs that have lain latent for years.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This file is provided by Parse::Yapp and on install we overwrite the
orignal file.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Tue Dec 10 01:54:02 UTC 2019 on sn-devel-184
These methods are not used or usable as exported functions. The
correct (and actual) usage is along these lines;
require Parse::Pidl::Samba3::ClientNDR;
my $generator = new Parse::Pidl::Samba3::ClientNDR();
my ($c_code,$h_code) = $generator->Parse($ndr, $header, $c_header);
where the methods are either explicitly referenced (new A::B::C),
or are called from the blessed object, neither of which need
exporting.
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): Wed Dec 4 06:35:06 UTC 2019 on sn-devel-184
rather than ->{ret}, meaning this class can be moved to a Pidl::Base subclass
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
