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Commit Graph

251 Commits

Author SHA1 Message Date
Volker Lendecke
0baae61e42 lib: Give lib/util/util_file.c its own header file
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Martin Schwenke <mschwenke@ddn.com>
2024-04-16 23:51:45 +00:00
Andreas Schneider
84d5150363 librpc:rpc: Add dcerpc_lsa.h
This adds AES constants by MS.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2024-04-09 22:52:38 +00:00
Stefan Metzmacher
1b6ef968d8 dcesrv_reply: just drop responses if the connection is already terminating
There's no reason to waste resources...

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>

Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Tue Jan  9 11:26:55 UTC 2024 on atb-devel-224
2024-01-09 11:26:55 +00:00
Stefan Metzmacher
e829f5d8ec dcesrv_core: add dcesrv_call_state->subreq in order to allow tevent_req_cancel() on termination
Requests might be cancelled if the connection got disconnected,
we got an ORPHANED or CO_CANCEL pdu.

But this is all opt-in for the backends to choose.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2024-01-09 10:21:34 +00:00
Joseph Sutton
a396b705c8 librpc:ndr: Introduce ‘ndr_flags_type’ type
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>
2023-11-01 20:10:45 +00:00
Stefan Metzmacher
7a7a38b870 librpc/rpc: also get the 2nd half of the ndr_syntax_id from a floor
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-17 19:20:38 +00:00
Stefan Metzmacher
1058382d04 librpc/rpc: add dcerpc_floor_pack_uuid_full() helper function
This handles the full syntax with split major and minor version,
from lhs and rhs.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-17 19:20:38 +00:00
Stefan Metzmacher
b8eae78225 librpc/rpc: add dcesrv_async_reply() helper that disconnects as needed
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-17 19:20:38 +00:00
Stefan Metzmacher
5a6978205e librpc/rpc: allow dcesrv_context to propose the preferred ndr syntax
This allows specific services to use ndr64.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-17 19:20:38 +00:00
Stefan Metzmacher
40e780ad16 dcesrv_core: maintain the number of allocated association groups per dce_ctx
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-17 19:20:38 +00:00
Stefan Metzmacher
2ba5016e4b librpc/rpc: add dcesrv_register_default_auth_types[_machine_principal]() helpers
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-17 19:20:38 +00:00
Stefan Metzmacher
1d0a5b3ac7 librpc/rpc: implement dcesrv_mgmt_inq_princ_name infrastructure
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-17 19:20:38 +00:00
Stefan Metzmacher
9f51379dd7 librpc/rpc: let dcesrv_mgmt_inq_if_ids() filter out the mgmt syntax_id
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-17 19:20:38 +00:00
Stefan Metzmacher
6cb12d3955 librpc/rpc: apply some code cleanup and error checks to dcesrv_mgmt.c
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-10-17 19:20:38 +00:00
Joseph Sutton
c8b90d8d20 librpc: Fix typos in error messages
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Wed Sep 27 03:38:00 UTC 2023 on atb-devel-224
2023-09-27 03:38:00 +00:00
Joseph Sutton
acc614f28a librpc: Use portable format specifiers
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-09-27 02:43:28 +00:00
Joseph Sutton
df24eced48 librpc: Fix code spelling
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-09-11 02:42:41 +00:00
Stefan Metzmacher
5c724a3e15 librpc/rpc: let dcerpc_read_ncacn_packet_next_vector() handle fragments without any payload
DCERPC_PKT_CO_CANCEL and DCERPC_PKT_ORPHANED don't have any payload by
default. In order to receive them via dcerpc_read_ncacn_packet_send/recv
we need to allow fragments with frag_len == DCERPC_NCACN_PAYLOAD_OFFSET.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15446

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
2023-08-08 08:02:40 +00:00
Joseph Sutton
dc3bcd5e78 librpc: Fix typo
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-08-08 04:39:37 +00:00
Joseph Sutton
e69968d248 librpc/rpc: Add missing newline to logging message
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-08-08 04:39:36 +00:00
Andreas Schneider
eba5b05a51 librpc:rpc: Fix code spelling
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-06-23 13:44:31 +00:00
Stefan Metzmacher
e03e738dfc librpc/rpc: allow smb3_sid_parse() to accept modern encryption algorithms
We should not limit the possible encryption algorithms to the currently
known ones.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15374

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>

Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Wed May 17 07:34:28 UTC 2023 on atb-devel-224
2023-05-17 07:34:28 +00:00
Volker Lendecke
59694ad0a4 rpc_server3: Pass winbind_env_set() state through to rpcd_*
Winbind can ask rpcd_lsad for LookupNames etc. This can recurse back
into winbind for getpwnam. We have the "_NO_WINBINDD" environment
variable set in winbind itself for this case, but this is lost on the
way into rpcd_lsad. Use a flag in global_sid_Samba_NPA_Flags to pass
this information to dcerpc_core, where it sets the variable on every
call if requested.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=15361
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>

Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Tue May 16 11:54:32 UTC 2023 on atb-devel-224
2023-05-16 11:54:32 +00:00
Volker Lendecke
1d11e0489b librpc: Simplify dcerpc_is_transport_encrypted()
Simplify logic by using security_token_count_flag_sids()

Bug: https://bugzilla.samba.org/show_bug.cgi?id=15361
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2023-05-16 10:53:40 +00:00
Volker Lendecke
cc4a2d4edc librpc: Simplify dcerpc_default_transport_endpoint()
We don't need strcmp for just 1 byte

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-03-09 18:10:33 +00:00
Joseph Sutton
e20067c52d auth: Make more liberal use of SID index constants
Arrays of SIDs are handled not fully consistently throughout the
codebase. Sometimes SIDs in the first and second positions represent a
user and a primary group respectively; other times they don't mean
anything in particular. Using these index constants in situations of the
former sort can help to clarify our intent.

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2023-02-08 00:03:39 +00:00
Volker Lendecke
b73ecb28a7 lib: Remove idtree from samba_util.h
No need to recompile the world when only a few files need this.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2023-01-10 00:28:37 +00:00
Samuel Cabrero
25300d354c CVE-2022-38023 s3:rpc_server/netlogon: Use dcesrv_netr_creds_server_step_check()
After s3 and s4 rpc servers merge we can avoid duplicated code.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2023-01-09 14:23:36 +00:00
Samuel Cabrero
121e7b0e39 CVE-2022-38023 s4:rpc_server/netlogon: Move schannel and credentials check functions to librpc
Will be used later by s3 netlogon server.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2023-01-09 14:23:36 +00:00
Andreas Schneider
e42ebd22e9 librpc:rpc: Add SAMR encryption and mac key salt definitions
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2022-07-28 11:51:28 +00:00
Stefan Metzmacher
0651fa474c dcesrv_core: wrap gensec_*() calls in [un]become_root() calls
This is important for the source3/rpc_server code as it might
be called embedded in smbd and may not run as root with access
to our private tdb/ldb files.

Note this is only really needed for 4.15 and older, as
we no longer run the rpc_server embedded in smbd,
but we better be consistent for now.

This should be able to fix the problem the printing no longer works
on Windows 7 with 2021-10 monthly rollup patch (KB5006743).

Windows uses NTLMSSP with privacy at the DCERPC layer on top
of NCACN_NP (smb).

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14867

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2022-01-24 15:25:36 +00:00
Volker Lendecke
7b62fa967d dcesrv_core: Remove unused dcesrv_reinit_context()
This was only used in the prefork source3 rpc servers

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
da90c02b16 dcesrv_core: Add dcesrv_loop_next_packet()
This is used by the helpers of samba-dcerpcd: When accepting a DCERPC
client, normally the server engine would read the initial bind
packet. In case of samba-dcerpcd the bind packet will already be read
from the socket, so we need to inject it into the rpc server engine
externally.

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
3284ee9985 dcesrv_core: Add dcesrv_context_set_callbacks()
We'll need to set custom callbacks on source3's global_dcesrv_ctx,
which right now is deeply embedded. Once we have everything more
nicely layered, this can go again.

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
Stefan Metzmacher
871d672f51 CVE-2021-23192: dcesrv_core: only the first fragment specifies the auth_contexts
All other fragments blindly inherit it.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14875

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Samuel Cabrero <scabrero@samba.org>
2021-11-09 19:45:34 +00:00
Stefan Metzmacher
2f0bc04afe CVE-2021-23192: dcesrv_core: add dcesrv_fault_disconnect0() that skips DCERPC_PFC_FLAG_DID_NOT_EXECUTE
That makes the callers much simpler and allow better debugging.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14875

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Samuel Cabrero <scabrero@samba.org>
2021-11-09 19:45:34 +00:00
Stefan Metzmacher
c00e5fc2c6 CVE-2021-23192: dcesrv_core: add better debugging to dcesrv_fault_disconnect()
It's better to see the location that triggered the fault.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14875

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Samuel Cabrero <scabrero@samba.org>
2021-11-09 19:45:34 +00:00
Volker Lendecke
18cbeab98b librpc: Use talloc_asprintf_addbuf() in dcerpc_binding_string()
Saves quite a few lines

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2021-10-08 19:28:31 +00:00
Volker Lendecke
a767eb55d8 rpc_server3: Avoid a literal number available as a constant
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2021-10-08 19:28:31 +00:00
Volker Lendecke
e2256c99a6 smbd: Make SID_SAMBA_SMB3 a static SID
No need to parse it

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2021-10-08 19:28:31 +00:00
Volker Lendecke
1e30fad7ee rpc_server: Simplify dcesrv_handle_lookup()
Reduce indentation with a "break;" from the loop, best reviewed with
git show -b

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2021-09-24 23:55:32 +00:00
Volker Lendecke
acaa89aac9 rpc_server: Move a type check in dcesrv_handle_lookup()
This check is independent of whether we found a handle or not, we can
do it before walking the handle list.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2021-09-24 23:55:32 +00:00
Samuel Cabrero
9c8521848b librpc:core: Add a function to register an interface passing the binding handle
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
2021-09-21 10:15:34 +00:00
Andreas Schneider
d6eff9c413 librpc: Make sure num_protocols is initialized
Found by covscan.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Pavel Filipenský <pfilipen@redhat.com>
Reviewed-by: Noel Power <npower@samba.org>
2021-06-10 10:31:33 +00:00
Bernd Kuhls
4d5fb7d279 dcesrv_core: fix build
Move include of system/network.h to avoid a build error:

In file included from ../../lib/replace/system/network.h:35,
                 from ../../librpc/rpc/dcesrv_core.c:2658:
usr/include/unistd.h: At top level:
usr/include/unistd.h:675:16: error: conflicting types for ‘geteuid’
  675 | extern __uid_t geteuid (void) __THROW;

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2021-04-07 09:18:30 +00:00
Volker Lendecke
4d3b6506d3 librpc: Remove the gensec dependency from library dcerpc-binding
This means yet another library, but having to depend on gensec just
for dcerpc_parse_binding() and basic packet parsing seems like a bit
overkill to me.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Apr  6 23:33:14 UTC 2021 on sn-devel-184
2021-04-06 23:33:14 +00:00
Volker Lendecke
8945d99758 rpc: Give dcerpc_util.c its own header
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2021-04-06 22:29:34 +00:00
Volker Lendecke
55dba99895 librpc: Simplify dcerpc_binding_dup() with common nomem handling
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2021-03-19 07:09:37 +00:00
Volker Lendecke
9614273aa3 librpc: Make "dcesrv_context->callbacks" a pointer
This structure just grew from 3 to 6 pointers, avoid making a copy of
this. All callers of dcesrv_init_context() have this as a static
struct in the C object, so a pointer to that won't change.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2021-03-16 17:09:32 +00:00
Volker Lendecke
403eabe4fc librpc: Add "private_data" to struct dcesrv_context_callbacks
Not used right now, but we should never have callbacks without a
"private_data" pointer. Some of the callbacks could even today benefit
from this.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2021-03-16 17:09:31 +00:00