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This is not correct, but it gets closer. We need to save the updated
serial number in the SOA.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This is based on observed Windows behaviour.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We have been refusing to handle the case where the replaced record
matches the replacement according to dns_record_match() (meaning the
wType and data are semantically identical). In Windows this is
explicitly used for changing TTL.
There are further changes we need to properly handle this case.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We want to do this also in update (in following commits), and we later
will want to fix the logic.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
lib/util/safe_string.h is similar to source3/include/safe_string.h, but
the former has fewer checks. It is missing bcopy, strcasecmp, and
strncasecmp.
Add the missing elements to lib/util/safe_string.h remove the other
safe_string.h which is in the source3-specific path. To accomodate
existing uses of str(n?)casecmp, add #undef lines to source files where
they are used.
Signed-off-by: Matthew DeVore <matvore@google.com>
Reviewed-by: David Mulder <dmulder@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Aug 28 02:18:40 UTC 2020 on sn-devel-184
On (eg) the
DC=_msdcs.X.Y,CN=MicrosoftDNS,DC=ForestDnsZones,DC=X,DC=Y
record, in domains that have had a Microsoft Windows DC an attribute:
dNSProperty:: AAAAAAAAAAAAAAAAAQAAAJIAAAAAAAAA
000000 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 >................<
000010 92 00 00 00 00 00 00 00 >........<
000018
We, until samba 4.12, would parse this as:
pull returned Success
dnsp_DnsProperty: struct dnsp_DnsProperty
wDataLength : 0x00000000 (0)
namelength : 0x00000000 (0)
flag : 0x00000000 (0)
version : 0x00000001 (1)
id : DSPROPERTY_ZONE_NS_SERVERS_DA (146)
data : union dnsPropertyData(case 0)
name : 0x00000000 (0)
dump OK
However, the wDataLength is 0. There is not anything in
[MS-DNSP] 2.3.2.1 dnsProperty to describe any special behaviour
for when the id suggests that there is a value, but wDataLength is 0.
https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-dnsp/445c7843-e4a1-4222-8c0f-630c230a4c80
We now fail to parse it, because we expect an entry with id DSPROPERTY_ZONE_NS_SERVERS_DA
to therefore have a valid DNS_ADDR_ARRAY (section 2.2.3.2.3).
As context we changed it in our commit fee5c6a424
because of bug https://bugzilla.samba.org/show_bug.cgi?id=14206
which was due to the artificial environment of the fuzzer.
Microsoft advises that Windows also fails to parse this, but
instead of failing the operation, the value is ignored.
Reported by Alex MacCuish. Many thanks for your assistance in
tracking down the issue.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14310
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Fri May 15 07:29:17 UTC 2020 on sn-devel-184
This is not a proper fix to match Windows, but at the very least, it
should be more obvious to users (using samba-tool for instance), that
the user needs to be given more access or that they should use the
administrator.
Windows seems to deny access altogether by returning a fault after they
have bound to the pipe and actually sent an operation.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13771
Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
By using the new ldb_dn_add_child_val() we ensure that the user-controlled values are
not parsed as DN seperators.
Additionally, the casefold DN is obtained before the search to trigger
a full parse of the DN before being handled to the LDB search.
This is not normally required but is done here due to the nature
of the untrusted input.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13466
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
DNS record scavenging function with testing. The logic of the custom match rule
in previous commit is inverted so that calculations using zone properties can
be taken out of the function's inner loop. Periodic task to come.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=10812
Signed-off-by: Aaron Haslett <aaronhaslett@catalyst.net.nz>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This allows a user to set zone properties relevant to DNS record aging over RPC.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=10812
Signed-off-by: Aaron Haslett <aaronhaslett@catalyst.net.nz>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reading zone properties from LDB on server connection initialisation, instead
of them being volatile fields.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=10812
Signed-off-by: Aaron Haslett <aaronhaslett@catalyst.net.nz>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
If we had this check in when the wildcard DNS tests were written, we would have
noticed that the name needed to be escaped (see previous commit).
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12994
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
This may also prevent deletion of existing corrupted records through
DNS, but should be resolvable through RPC, or at worst LDAP.
Signed-off-by: Bob Campbell <bobcampbell@catalyst.net.nz>
Pair-programmed-with: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
noticed this when using samba-tool to create a new zone
Signed-off-by: Guenter Kukkukk <kukks@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Thu May 30 09:41:20 CEST 2013 on sn-devel-104
This makes sure that when updating SOA record, the serial is set to the value
sent by client. For all other records, serial is incremented.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
..TrustAnchors zone is not interpreted by RPC dnsserver code.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Tue Oct 9 03:21:07 CEST 2012 on sn-devel-104
- ZoneCreate operation to create zone.
- DeleteZoneFromDs operation to delete zone
When a zone is deleted, all the records in that zone are also deleted.
dnsserver.h - typedefs and prototypes
dnsserver.c - RPC API and implementation methods
dnsdb.c - samdb operations
dnsdata.c - functions to manipulate dns structures
dnsutils.c - function for serverinfo and zoneinfo structures
Signed-off-by: Andrew Tridgell <tridge@samba.org>
