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ldb_msg_add_empty reallocates the underlying element array, leaving
old_el pointing to freed memory.
This patch takes two defensive copies of the ldb message, and performs
the updates on them rather than the ldb messages in the result.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=14050
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Autobuild-User(master): Karolin Seeger <kseeger@samba.org>
Autobuild-Date(master): Tue Jan 21 11:38:38 UTC 2020 on sn-devel-184
The string may be in another charset, or may be sensitive and
certainly may not be terminated. It is not safe to just print.
Found by Robert Święcki using a fuzzer he wrote for smbd.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14208
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
We can not process on the basis of a DN, as the DN may have changed in a rename,
not only that this module can see, but also from repl_meta_data below.
Therefore remove all the complex tree-based change processing, leaving only
a tree-based sort of the possible objects to be changed, and a single
stopped_dn variable containing the DN to stop processing below (after
a no-op change).
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12497
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Previously if there was a conflict, but the incoming object would still
win, this was not marked as a rename, and so inheritence was not done.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12497
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
We need to check the SD of the parent if we rename, it is not the same as an incoming SD change.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12497
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
While we have a seperate test (sec_descriptor.py) that confirms inheritance in
general we want to lock in these specific patterns as this test covers
rename.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
The current detection doesn't seem to work, so libunwind doesn't seem
to be used.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Tue Jan 21 08:12:17 UTC 2020 on sn-devel-184
We now have to do an explicit DOWNGRADE when we want to change from
G_LOCK_WRITE to G_LOCK_READ.
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): Sun Jan 19 19:58:01 UTC 2020 on sn-devel-184
A simple write() might be interrupted or do short writes. Highly
unlikely, but if it happens, it will be impossible to diagnose.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
export FOO=bar is a Bash extension, and is not required in this case, we only need the asn1_compile
to run under the variable, there are no further commands in this sub-shell.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Isaac Boukris <iboukris@samba.org>
Autobuild-User(master): Isaac Boukris <iboukris@samba.org>
Autobuild-Date(master): Sat Jan 18 12:25:16 UTC 2020 on sn-devel-184
When we're about to create a file, the stat info will be all zero, so
vfs_file_id_from_sbuf() would return a bogus file_id. This is normally not a
problem, as open_file() itself also calls vfs_file_id_from_sbuf() after having
created the file.
This is however a problem when using the VFS module fileid, as that is doing
caching of /etc/mtab and failing to find smb_fname->st.st_ex_dev (all zero in
this case when creating a new file) in the mtab cache will trigger a mtab reload
which can be *very* expensive.
Copying many small files to a Samba server in this situation will result in
abysimal performance.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14237
Pair-Programmed-With: Jeremy Allison <jra@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Jan 17 22:38:14 UTC 2020 on sn-devel-184
GlusterFS currently doesn't have an API implementation to set flags on
open file descriptor. Thus we use pipe() to provide valid file descriptor
from the system.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14241
Signed-off-by: Anoop C S <anoopcs@redhat.com>
Reviewed-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
Autobuild-User(master): Günther Deschner <gd@samba.org>
Autobuild-Date(master): Fri Jan 17 17:14:43 UTC 2020 on sn-devel-184
Address sanitizer will object to a theoretically possible NULL dereference
so we can't ignore these checks in set-up.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Fri Jan 17 14:33:18 UTC 2020 on sn-devel-184
We simply return 0 because failure here is not a problem with the code we
are actually trying to fuzz. Without this asan is unhappy.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
Guenther
Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Jan 16 21:34:27 UTC 2020 on sn-devel-184
The "UNC doesn't start with \\\\ or //" message was unreachable due to
a logic error, and an UNC starting with \\ would have been split on
/ if there were enough /s in the string.
The unreachable exception was first noticed by Gerhard Lausser in a
github pull request (https://github.com/samba-team/samba/pull/123),
but that patch no longer applies with this more thorough rewrite.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Jeremy Allison <jra@samba.org>
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 Jan 15 22:51:14 UTC 2020 on sn-devel-184
This is like close-share, but kicks out only active users where share
access controls are changed such that now access would be denied
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Wait for additional replies until timeout when '*' is given to nmblookup
as name.
Introduced by 8da8c36b53cc115f0d446b666fc24fc9423d808e.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=8927
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
We want to ensure that parse_packet() can parse a packet without
crashing, and that that parsed packet won't cause trouble further down
the line.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
Autobuild-User(master): Gary Lockyer <gary@samba.org>
Autobuild-Date(master): Wed Jan 15 21:24:31 UTC 2020 on sn-devel-184
TALLOC_FREE the ldb_control allocated in ldb_parse_control_from_string
when none of the cases match.
Credit to OSS-Fuzz
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: David Disseldorp <ddiss@samba.org>
Signed-off-by: Björn Baumbach <bb@sernet.de>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Wed Jan 15 13:30:53 UTC 2020 on sn-devel-184
