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This means ldb-samba/dsdb comparisons will be case-insensitive for
non-ASCII UTF-8 characters (within the bounds of the 16-bit casefold
table). And they will remain transitive.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
I don't think this variable length array is any trouble, but people
complain about them (e.g. https://nullprogram.com/blog/2019/10/27/)
because they make things more complex at run-time, and this is a
somewhat performance sensitive path.
DOM_SID_STR_BUFLEN + 1 is 191 -- if that stack allocation is going to
cause trouble, then so was the VLA <= that.
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 May 8 00:26:42 UTC 2024 on atb-devel-224
This avoids a memcpy, and level 3 debug verbosity from
dom_sid_parse_endp().
In other places we have something like `|| in->data[1] != '-'`, but
that is not useful here -- the value is either a string SID, or a
binary SID that starts with '\1', or some awful value that we *do*
want to get messages about.
This replaces the work of ldif_comparision_objectSid_isString().
BUG: https://bugzilla.samba.org/show_bug.cgi?id=10763
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This is unused because it does things badly, by just guessing and
not allowing valid sids that start with "s-". All the places that used
to use it were calling ldif_read_objectSid() or similar which correctly
check for string SIDs by actually trying to parse them. That begins
with looking for the "S-"/"s-", so this shortcut is not saving any real
work.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=10763
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This will allow the reading of SIDs that start with "s-", which
Windows allows, and we allow elsewhere.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=10763
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
ldif_comparision_objectSid_isString() is doing not useful or accurate,
and ldif_read_objectSid() checks properly.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=10763
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
The ldif_comparision_objectSid_isString() call is both wrong
(disallowing "s-") and redundant, because ldif_read_objectSid() calls
dom_sid_parse(), which does the check properly.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=10763
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
repsFromToBlob is much bigger, so this only meant we briefly allocated
more than we needed.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=10763
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Without a valid loadparm_context we can't connect.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
If both DNs are invalid, we can say they are equal.
This means invalid or NULL DNs will sort to the end of the array,
before deleted DNs:
[ valid DNs, sorted | invalid/NULL DNs | deleted DNs, sorted ]
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15625
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
dn1 and dn2 can be invalid but still occupying memory.
(ldb_dn_validate(dn2) does contain a NULL check, but a lot more besides).
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15625
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This changes the behaviour of the DN syntax .comparison_fn when being
used in a search, if the search key is a deleted DN.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15625
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
these tend to go to the end of the sorted array.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15625
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We were always returning -1 for a deleted object, which works for an
equality test, but not a relative comparison.
This sorts deleted DNs toward the end of the list -- except when both
DNs are deleted. What should happen there is yet to be determined.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15625
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This function compares blobs that might be SID strings or might be SID
structures. Until now, if they were both (seemingly) strings, they were
compared as strings, otherwise if either was a string it was converted to
a structure blob, then the blobs were compared. This had two big problems:
1. There is variety in the way a SID can be stringified. For example,
"s-1-02-3" means the same SID as "S-1-2-3", but those wouldn't compare
equal.
2. SID comparison was crazily non-transitive. Consider the three values
a = "S-1-2-3-4-5",
b = "S-1-9-1",
c = SID("S-1-11-1"), where c is a struct and the others are string.
then we had,
a < b, because the 5th character '2' < '9'.
a > c, because when converted to a structure, the number of sub-auths
is the first varying byte. a has 3, c has 0.
b < c, because after the sub-auth count comes the id_auth value
(big-endian, which doesn't matter in this case).
That made the function unreliable for sorting, AND for simple equality
tests. Also it leaked.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15625
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Now that pyldb-util is a private library to Samba, we have no excuses not to
consolidate helper functions like this.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
It can be very hard to known where transitive checks fail, and this
will help.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15515
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Jo Sutton <josutton@catalyst.net.nz>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Tue Mar 5 03:55:33 UTC 2024 on atb-devel-224
We need to change the internal types assumed in Samba for the opaque
integers to "unsigned long long" as this is what ldb.set_opaque() will
create, and we want to move to this interface rather than have a
duplicate.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Jo Sutton <josutton@catalyst.net.nz>
Setting the LDB_HANDLE_FLAG_UNTRUSTED tells the acl_read module to operate on this request.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15270
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
The chain for transitive evaluation does consider ACLs, avoiding the disclosure of
confidential information.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15270
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
This makes it less likely that we forget to handle a case.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15270
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Add a hook, acl_redact_msg_for_filter(), in the aclread module, that
marks inaccessible any message elements used by an LDAP search filter
that the user has no right to access. Make the various ldb_match_*()
functions check whether message elements are accessible, and refuse to
match any that are not. Remaining message elements, not mentioned in the
search filter, are checked in aclread_callback(), and any inaccessible
elements are removed at this point.
Certain attributes, namely objectClass, distinguishedName, name, and
objectGUID, are always present, and hence the presence of said
attributes is always allowed to be checked in a search filter. This
corresponds with the behaviour of Windows.
Further, we unconditionally allow the attributes isDeleted and
isRecycled in a check for presence or equality. Windows is not known to
make this special exception, but it seems mostly harmless, and should
mitigate the performance impact on searches made by the show_deleted
module.
As a result of all these changes, our behaviour regarding confidential
attributes happens to match Windows more closely. For the test in
confidential_attr.py, we can now model our attribute handling with
DC_MODE_RETURN_ALL, which corresponds to the behaviour exhibited by
Windows.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15270
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Trying ndr_pull_security_descriptor on SDDL produces just strange
debug messages, which can cause confusion.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
lib/ldb-samba/ldb_ildap.c:482:47: error: implicit conversion from enumeration
type 'enum ldb_scope' to different enumeration type 'enum ldap_scope'
[-Werror,-Wenum-conversion]
msg->r.SearchRequest.scope = req->op.search.scope;
~ ~~~~~~~~~~~~~~~^~~~~
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
The first call of talloc_asprintf_append() did not have a NULL check.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
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 Oct 5 05:23:50 UTC 2022 on sn-devel-184
We know the only values we want to see are uint32, ie < ~4 billion
(and real values will be 7 digits for hundreds of years).
We also know the caller (we have just checked) is a trusted system
session which won't be padding the thing with spaces. But if they do,
let's call them out.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Wed Jun 23 09:03:42 UTC 2021 on sn-devel-184
We should not enable ldb tracing on debug level 10 which is meant for
Samba debug logs and not trace logs.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
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): Wed Jun 16 01:25:28 UTC 2021 on sn-devel-184
smb_strtoull() already checks for negative numbers, but does
it properly, catching " -2" as well as "-2".
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Mar 30 18:55:28 UTC 2021 on sn-devel-184
We don't need it (only 64 bytes) and, well, they annoy people.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Jeremy Allison <jra@samba.org>
After the first time through the loop, tmp_ctx has been freed and
NULLed, so we end up allocating on NULL and never freeing.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14659
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Jeremy Allison <jra@samba.org>
Move of strcasecmp redefine to lib/util/safe_string.h in
https://gitlab.com/samba-team/samba/-/merge_requests/1507 broke build on
Fedora 33 with GCC 10.2.1 for those compilation units that use
ldb_att_cmp().
The reason for that is that ldb_attr_cmp() defined as
#define ldb_attr_cmp(a, b) strcasecmp(a, b)
because attribute names restricted to be ASCII by RFC2251 (LDAPv3 spec).
A solution is to add
#undef strcasecmp
to all source code files which use ldb_attr_cmp().
Signed-off-by: Alexander Bokovoy <ab@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Oct 1 22:45:29 UTC 2020 on sn-devel-184
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Swen Schillig <swen@linux.ibm.com>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Mon Aug 3 22:21:04 UTC 2020 on sn-devel-184
