1
0
mirror of https://github.com/samba-team/samba.git synced 2024-12-27 03:21:53 +03:00
Commit Graph

120606 Commits

Author SHA1 Message Date
Andrew Bartlett
66d12eb98a lib/fuzzing: Initialise st buffer in fuzz_ndr_X
An NDR pull of a function will fill in either the in. or out.
elements of this structure, but never both.

However, some structures have size_is() in the out. that reference
the in. elements.  This is the reason for the --context-file option
in ndrdump.

We have a special handler in the fuzzing case embedded in the
pidl-generated output to cope with this, by filling in pointers
for elements declared [ref,in] but it relies on the in-side
(at least) of the buffer being zeroed.

So zero the buffer before we start.  Sadly this means things
like valgrind can not find a use of uninitialised data, but that
is a price we have to pay.

Credit to OSS-Fuzz

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
2019-12-18 06:39:26 +00:00
Volker Lendecke
1141fbe984 smbd: Convert share_mode_data->num_share_modes into a boolean8
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): Wed Dec 18 00:05:13 UTC 2019 on sn-devel-184
2019-12-18 00:05:13 +00:00
Volker Lendecke
4a60e577db smbd: Don't store "num_share_modes" in locking.tdb
With the last commit we don't store the share mode entry count
anymore. With this commit we go one step further and avoid storing
it. If there's valid record in locking.tdb, there is a corresponding
record in share_entries.tdb, so there's no point storing that once
more explicitly.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-12-17 22:40:32 +00:00
Volker Lendecke
9734bad37b smbd: Use share_mode_data->num_share_modes as a boolean
This is a micro-commit showing that we don't actually need
share_mode_data->num_share_modes as a number *counting* the share mode
entries in share_entries.tdb anymore. Instead, we are only using it as
an indication for share_mode_lock_destructor() to see whether share
entries are around or not, i.e. whether it's worth keeping or deleting
the record in locking.tdb.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-12-17 22:40:32 +00:00
Volker Lendecke
42ce74994e smbd: Avoid a direct access to share_mode_data->num_share_modes
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-12-17 22:40:32 +00:00
Volker Lendecke
15977f5df8 smbd: Introduce share_mode_have_entries()
This hides a use of share_mode_data->num_share_modes in
share_mode_lock.c

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-12-17 22:40:32 +00:00
Volker Lendecke
0df06f51ff smbd: Avoid a reference to share_mode_data->num_share_modes
share_mode_data->num_share_modes will go away soon, count the values
directly while walking the array.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-12-17 22:40:32 +00:00
Volker Lendecke
5a2fa45741 smbd: Avoid a reference to share_mode_data->num_share_modes
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-12-17 22:40:32 +00:00
Volker Lendecke
21eff9d18d smbd: Pass num_share_modes to share_mode_entry_do() callback
mark_share_mode_disconnected_fn() will need this, the information is
easily available and should not hurt the other callers.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-12-17 22:40:32 +00:00
Volker Lendecke
3e5f1be8ea net: Use share_mode_count_entries()
Avoid a reference to share_mode_data->num_share_modes

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-12-17 22:40:32 +00:00
Volker Lendecke
28d9c41860 smbd: Add share_mode_count_entries()
In order to not write the share mode on every open/close, we need to get rid of
share_mode_data->num_share_modes. "net tdb" needs this information precisely
though, and it's pretty cheap to calculate.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-12-17 22:40:32 +00:00
David Disseldorp
54293f92cd vfs_ceph_snapshots: fix root relative path handling
For file paths relative to root, ceph_snap_get_parent_path() may return
an empty parent dir string, in which case the CephFS snashot path should
be ".snap".

Bug: https://bugzilla.samba.org/show_bug.cgi?id=14216

Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-12-17 22:40:31 +00:00
Anoop C S
fca2d3e0d1 s3: VFS: glusterfs: Reset nlinks for symlink entries during readdir
On receiving an already initialized stat_ex buffer for readdir() call we
invoke readdirplus() GlusterFS API, an optimized variant of readdir(),
which then returns stat information along with dir entry result. But for
symlink entries we don't know if link or target info is needed. In that
case it is better to leave this decision back to caller by resetting
nlinks value inside stat information to make it invalid.

This was also preventing us from displaying msdfs link as directories
inside the share.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14182

Signed-off-by: Anoop C S <anoopcs@redhat.com>
Reviewed-by: Günther Deschner <gd@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Dec 17 21:53:07 UTC 2019 on sn-devel-184
2019-12-17 21:53:07 +00:00
Simo Sorce
2241ce8e86 mit-kdb: Fix license on header file
Signed-off-by: Simo Sorce <idra@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Alexander Bokovoy <ab@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>

Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Tue Dec 17 09:24:56 UTC 2019 on sn-devel-184
2019-12-17 09:24:56 +00:00
Günther Deschner
5d34c8874d s3-rpc_server: always print the full PDU.
Guenther

Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
2019-12-17 07:58:39 +00:00
Volker Lendecke
97ad50544a smbd: Use explicit share_mode_wakeup_waiters()
We don't need to unparse the locking.tdb record, we just need to wake
up waiters when removing an oplock

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): Mon Dec 16 20:27:59 UTC 2019 on sn-devel-184
2019-12-16 20:27:59 +00:00
Volker Lendecke
1c188c3716 smbd: Use explicit share_mode_wakeup_waiters()
We don't need to unparse the locking.tdb record, we just need to wake
up waiters when downgrading a lease

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-12-16 19:02:32 +00:00
Volker Lendecke
6abcc83366 smbd: Explicitly state when modifying share_mode_data
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-12-16 19:02:32 +00:00
Volker Lendecke
fe7f241225 torture4: Fix a typo
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-12-16 19:02:31 +00:00
Volker Lendecke
810fd90a6f smbd: Fix a typo
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-12-16 19:02:31 +00:00
Volker Lendecke
f42e089a6e smbd: Avoid casts in open_directory()
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2019-12-16 19:02:31 +00:00
Jeremy Allison
af2d54bfce s3: smbd: msdfs: Factor out the code to create a msdfs:referral,list into a separate function.
This will allow it to be called from other places once the get/set_msdfs
calls are moved into being first class VFS functions.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>

Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Mon Dec 16 15:32:08 UTC 2019 on sn-devel-184
2019-12-16 15:32:08 +00:00
Jeremy Allison
cc1ec0a9f1 s3: smbd: cleanup. Change 'int referral_count' -> 'size_t referral_count' in struct junction_map.
This is a non-negative count. Fix remaing code to not mix int and size_t.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2019-12-16 14:05:33 +00:00
Jeremy Allison
2048ff3adc s3: smbd: msdfs: Cleanup, don't mix int and size_t types for a count variable.
Add integer wrap check.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2019-12-16 14:05:33 +00:00
Ralph Boehme
48ed60d7fd lib/replace: work around an API conflict between ncurses and XFS xattr API
Compile error:

  [4530/4693] Compiling source3/utils/regedit_list.c
  In file included from ../../source3/utils/regedit_list.h:24,
                   from ../../source3/utils/regedit_list.c:20:
  /usr/include/curses.h:611:28: error: conflicting types for ‘attr_get’
    611 | extern NCURSES_EXPORT(int) attr_get (attr_t *, NCURSES_PAIRS_T *, void *); /* generated */
        |                            ^~~~~~~~
  compilation terminated due to -Wfatal-errors.

Both ncurses and XFS xattr API provide a get_attr() function. As a workaround
avoid including <sys|attr/attributes.h> if <attr|sys/xattr.h> is present.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Dec 12 20:22:51 UTC 2019 on sn-devel-184
2019-12-12 20:22:51 +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
d30c377d8c librpc/ndr: Remove ndr_{push,pull}_get_switch_value()
By removing this we know we do not need to worry about this list
growing without bounds.  We merge this into the recently created but
not yet released ABI 1.0.0

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 02:30:41 +00:00
Andrew Bartlett
a44717394d librpc: Remove last callers of ndr_push_get_switch_value()
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
b880bda589 librpc: Remove last callers of ndr_pull_get_switch_value()
By removing this we know we do not need to worry about this list
growing without bounds.

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
92a7c5a726 librpc: Do not follow a NULL pointer when calculating the size of a union
Found by Douglas Bagnall using Hongfuzz and the new fuzz_ndr_X
fuzzer.

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
456cdb7fa3 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
362d70ff2f librpc: Do not follow a NULL pointer when calculating the size of a structure
Found by Douglas Bagnall using Hongfuzz and the new fuzz_ndr_X
fuzzer.

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
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
e1a15710a4 librpc/ndr: Add ndr_push_steal_switch_value()
This will allow generated code to instead push and pop union values onto the
switch_list stack, which is more memory efficient than creating a single large
list to be scannned and eventually discarded.

Merge into unreleased ABI 1.0.0

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
Andrew Bartlett
f7bcf227f7 librpc: Set the switch_value before NDR_BUFFERS to prepare for new libndr 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>
2019-12-12 02:30:40 +00:00
Andrew Bartlett
a22a22e4a8 negoex: Set the switch_value before NDR_BUFFERS to prepare for new libndr 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>
2019-12-12 02:30:40 +00:00
Andrew Bartlett
ae43093b79 s4-libcli/rap: Set the switch_value before NDR_BUFFERS to prepare for new libndr 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>
2019-12-12 02:30:40 +00:00
Andrew Bartlett
7a0ed44b0e ndr: Restrict size of ndr_token lists to avoid memory abuse by malicious clients
This is designed to stop a very large number of tokens from being stored for
arrays of structures containing relative pointers in particular.

This was one part of the minimum patch for CVE-2019-14908 before
being downgraded as not a security-release worthy issue.

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 02:30:39 +00:00
Andrew Bartlett
4501663f6e libndr: Do not overwrite token list with NULL on allocation failure
This was one part of the minimum patch for CVE-2019-14908 before
being downgraded as not a security-release worthy issue.

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 02:30:39 +00:00
Andrew Bartlett
bcffdc9a89 selftest: Add test for ndr_size_struct() faulting on a NULL pointer
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 02:30:39 +00:00
Andrew Bartlett
f56fa3bb6a selftest: Add test for ndr_size_union() faulting on a NULL pointer
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 02:30:39 +00:00
Andrew Bartlett
6ef5014549 selftest: Add example xattr_NTACL packets to demonstrate switch/union behaviour
This is a good example with both buffers and scalars in the union.

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 02:30:39 +00:00
Andrew Bartlett
cf83eec565 selftest: Add test for structure with NDR_BUFFERS only in a union
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 02:30:39 +00:00
Samuel Cabrero
3f69c6b132 selftest: Do not force the endpoint for fsrvp tests
The test suite will bind to the srvsvc interface, let it find the
correct endpoint through the endpoint mapper.

Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Thu Dec 12 02:00:19 UTC 2019 on sn-devel-184
2019-12-12 02:00:19 +00:00
Samuel Cabrero
4a608b281c s4:torture/rpc: Fix torture comment in mdssvc.c
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
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
79af978c81 librpc:core: Add a function to reinitialize the dcesrv_context
Clears all registered endpoints and interfaces, association groups and
broken connections.

To be used by S3 forked daemons.

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
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