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Commit Graph

585 Commits

Author SHA1 Message Date
Volker Lendecke
0a7ecf1880 rpc_server3: Remove pipes_struct->auth
Replace with a call to dcesrv_call_auth_info(p->dce_call)

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-01-05 00:11:38 +00:00
Volker Lendecke
8379d8cd53 rpc_server3: Remove pipes_struct->session_info
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>
2022-01-05 00:11:38 +00:00
Volker Lendecke
716727c020 rpc_server3: Remove pipes_struct->pipe_bound
Only used in pipe_access_check(), superseded by dcesrv_call_auth_info()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>
2022-01-05 00:11:37 +00:00
Volker Lendecke
a7c65958a1 s3:rpc_server: Activate samba-dcerpcd
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>
2021-12-10 14:02:30 +00:00
Volker Lendecke
ed9e2850bf rpc_server3: Remove "pipes_struct->opnum"
Also available via dce_call->pkt.u.request.opnum

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2021-10-08 19:28:32 +00:00
Samuel Cabrero
af06d73a75 s3:rpc_server: Do not use the default ncalrpc endpoint for external services
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
2021-09-21 11:00:01 +00:00
Samuel Cabrero
99bf0c1b26 pidl:NDR/ServerCompat.pm: Do not register disabled services
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>
2021-09-21 10:15:34 +00:00
Andrew Bartlett
3bc680c1e3 pidl: Avoid leaving array_size NDR tokens around
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>
2021-06-02 03:56:36 +00:00
Andrew Bartlett
a7d4f93cfd pidl: Avoid leaving array_length NDR tokens around
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>
2021-06-02 03:56:36 +00:00
Andrew Bartlett
c35f4180a4 libndr: Return error code from ndr_token_peek()
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>
2021-06-02 03:56:36 +00:00
Joseph Sutton
537f2d19b5 pidl: Handle assigning to an inline array from Python
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
2021-05-28 09:50:02 +00:00
Ralph Boehme
4c3fb2a591 pidl: set the per-request memory context in the pidl generator
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>
2021-03-31 11:11:31 +00:00
Björn Jacke
aa8d6c779c pidl: use unused attribute only if supported by feature macro
Signed-off-by: Bjoern Jacke <bjacke@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2020-11-10 06:53:43 +00:00
Douglas Bagnall
9199541052 pypidl: check the result of py_dcerpc_ndr_pointer_deref()
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2020-07-06 12:30:33 +00:00
Samuel Cabrero
10cea64e4c s3: rpc_server: Remove dead code
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2020-05-24 23:55:37 +00:00
Samuel Cabrero
70fa7e817e s3: rpc_server: Drop s3 rpc handles implementation
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2020-05-24 23:55:37 +00:00
Samuel Cabrero
f98b3b6f10 pidl: Set dce_call in pipes_struct before dispatching call
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2020-05-24 23:55:37 +00:00
Gary Lockyer
13a2f70a4d Fix clang 9 missing-field-initializer warnings
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
2020-05-08 09:31:31 +00:00
Gary Lockyer
c2b0071460 Fix clang 9 unused-function warnings
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
2020-05-08 09:31:31 +00:00
Volker Lendecke
3aaa50b657 pidl: Align integer types in scompat files
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2020-04-18 02:29:34 +00:00
Samuel Cabrero
03f79a3bd7 s3:rpc_server: Improve local dispatching
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
2020-04-08 22:23:05 +00:00
Andrew Bartlett
5c1867ba45 py3: Remove #define PyInt_FromLong PyLong_FromLong
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
2020-03-23 19:12:43 +00:00
Andrew Bartlett
4764e8b4c7 py3: Remove #define PyInt_AsLong PyLong_AsLong
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>
2020-03-23 19:12:43 +00:00
Andrew Bartlett
08a76ec096 pidl: Remove reference to PyInt_Type from error string when we wanted a sensible Long
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>
2020-03-23 19:12:43 +00:00
Andrew Bartlett
79044e966c pidl: Remove duplicate "if (PyLong_Check($cvar)" clauses
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>
2020-03-23 19:12:43 +00:00
Andrew Bartlett
3aea3b1538 py3: Remove #define PyInt_Check PyLong_Check
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>
2020-03-23 19:12:43 +00:00
Samuel Cabrero
f6d41e5b44 s3:rpc_server: Remove api_struct
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2020-03-20 15:36:36 +00:00
Samuel Cabrero
42a7e7bcad pidl:NDR/ServerCompat: Generate local dispatching function
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>
2020-03-20 15:36:35 +00:00
Samuel Cabrero
73e32f5f42 pidl:NDR/ServerCompat: Initialize and allocate out vars
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2020-03-20 15:36:35 +00:00
Samuel Cabrero
bebd55784a pidl:NDR/ServerCompat: Add dispatch, reply, pull and push functions to header
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>
2020-03-20 15:36:35 +00:00
Samuel Cabrero
d1afa40c3c pidl:NDR/ServerCompat: Retrieve and setup pipes struct before dispatch
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2020-03-20 15:36:35 +00:00
Samuel Cabrero
7eab9f8850 pidl:NDR/ServerCompat: Register and unregister legacy api_struct cmds
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>
2020-03-20 15:36:32 +00:00
Samuel Cabrero
1903467014 pidl:NDR/ServerCompat: Compat server PIDL parser
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2020-03-20 15:36:31 +00:00
Gary Lockyer
5d323f2a2e pidl: Add recursive depth checks.
Add new parameter to elements "max_recursion" and modify pidl to call
NDR_RECURSION_CHECK and NDR_RECURSION_UNWIND for element tagged with
that attribute.

Credit to OSS-Fuzz

REF: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19820
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14254

Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2020-02-27 01:02:32 +00:00
Andrew Bartlett
cf4984947b build: Do not check if system perl modules should be bundled
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>
2020-02-04 05:13:39 +00:00
Douglas Bagnall
af47a77673 pidl/wscript: configure should insist on Parse::Yapp::Driver
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
2020-02-02 10:09:11 +00:00
Andrew Bartlett
82aff583b7 libndr: Return enum ndr_err_code from ndr_{pull,push}_steal_switch_value()
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
2019-12-12 03:56:23 +00:00
Andrew Bartlett
5eb560d25e pidl: Mismatch between set and get of relative base pointers
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>
2019-12-12 02:30:40 +00:00
Andrew Bartlett
e08461b284 pidl: Add and use ndr_print_steal_switch_value(), removing ndr_print_get_switch_value()
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>
2019-12-12 02:30:40 +00:00
Andrew Bartlett
603f23b19c pidl: Generate and consume the switch level token for both NDR_SCALARS and NDR_BUFFERS in ndr_pull()
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>
2019-12-12 02:30:40 +00:00
Samuel Cabrero
e24ce0023f pidl:NDR/Server: Allow to define endpoint server shutdown functions
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>
2019-12-12 00:35:31 +00:00
Samuel Cabrero
90eb485cf9 librpc:core: Add public functions to initialize endpoint servers
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>
2019-12-12 00:35:30 +00:00
Andrew Bartlett
bc0c876a9e pidl:NDR/Parser: only include structs in ndr_interface_public_struct
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
2019-12-10 17:45:46 +00:00
Douglas Bagnall
7b265830ad lib/fuzzing: add fuzz_ndr_X
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>
2019-12-10 07:50:28 +00:00
Douglas Bagnall
ef5d79e24b pidl/tests/samba-ndr.pl: remove duplicate import
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
2019-12-10 04:16:31 +00:00
Douglas Bagnall
fbe402edf5 pidl s4::Python: silence warnings
- 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>
2019-12-10 02:53:35 +00:00
Douglas Bagnall
51a11afecf pidl Parse::Pidl::NDR: silence two warnings about undefined strings
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2019-12-10 02:53:35 +00:00
Douglas Bagnall
3c90c9de6f pidl Parse::Pidl::NDR: add HRESULT alignment
this is a guess

Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2019-12-10 02:53:35 +00:00
Douglas Bagnall
33255102ac pidl Parse::Pidl::NDR: warn of unknown scalar alignments
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2019-12-10 02:53:35 +00:00
Douglas Bagnall
4de002a0f7 pidl s4::NDR::Parser: silence a warning
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>
2019-12-10 02:53:35 +00:00