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Add an option to smb.conf to list authorized zone transfer clients.
Implement restriction in dlz_bind9 module to allow transfers only to selected IPs.
Deny zone transfer by default in dlz_bind9.
Adds test for the restriction in DNZ zone transfer clients.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=9634
Signed-off-by: Julien ROPÉ <jrope@linagora.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Jun 11 19:28:10 UTC 2021 on sn-devel-184
We have had three nearly identical functions called
dns_record[s]_match. This patch merges two of them, attempting to keep
the good bits and not the bugs.
That means:
1. We use the AAAA match from dlz, which is agnostic to all the
billions of ways you can write the same IPv6 address (case sensitivity
is just the beginning).
2. We lean more on the TXT match from dns_utils, because the dlz used
a weird bitwise &= operator, but we adjust to exit early.
3. Keep HINFO from dlz (for now).
4. Use the dns_name_equal() that was already in dns_common, which was
used by dlz. dns_utils had a strange one that probably did the same
thing.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This log message will never be seen. We know because:
1. Always (two places) we are comparing an incoming record against a
database record.
2. The incoming record has come from b9_parse(), which makes the same
check.
3. If the database record is bad, we will never get here because the
first check is b9_record_match() is
if (rec1->wType != rec2->wType) {
return false;
}
and rec1->wType is not going to equal the corrupt database record's
wType, because point 2.
OK, but why? So we can shift this into dnsserver_common.c, because
the internal dns server has an inferior record_match() and it could do
with sharing this one.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We no longer support versions of bind that have
DLZ_DLOPEN_VERSION != 3, so we no longer need all these ifdefs.
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): Mon May 17 22:29:01 UTC 2021 on sn-devel-184
In places we change NTTIME to uint32_t, because that is what is
actually wanted.
There is one instance of the calculation that we are not changing,
because there are other problems there.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Jeremy Allison <jra@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
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
This will help provide a better memory tree if we ever suspect a problem
here. The tmp_ctx varaible is always freed before the end of this
function.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
If done with popt context it should be free'd.
Signed-off-by: Swen Schillig <swen@linux.ibm.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Böhme <slow@samba.org>
Add duration debug logging to the samba bind9 dlz driver and the
dnsserver_common routines. This should aid future diagnosis of
performance issues, and could be used to monitor DNS performance.
The logs are currently Human readable text only, i.e. no JSON formatted
output.
Log lines are of the form:
<function>: DNS timing: result: [<result>] \
duration: (<duration>) zone: [<zone>] name: [<name>] \
data: [<data>]
e.g.
dns_common_wildcard_lookup: DNS timing: result: [WERR_OK] \
duration: (111) zone: [] \
name: [DC=_ldap._tcp.Default-First-Site-Name._sites.ForestDnsZones,\
DC=chgdcpassword.samba.example.com,CN=MicrosoftDNS,DC=DomainDnsZones,\
DC=chgdcpassword,DC=samba,DC=example,DC=com] data: []
Enabled by setting log level to "dns:10"
durations are in microseconds.
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Tue May 7 05:03:26 UTC 2019 on sn-devel-184
In order to detect an value overflow error during
the string to integer conversion with strtoul/strtoull,
the errno variable must be set to zero before the execution and
checked after the conversion is performed. This is achieved by
using the wrapper function strtoul_err and strtoull_err.
Signed-off-by: Swen Schillig <swen@linux.ibm.com>
Reviewed-by: Ralph Böhme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
../source4/dns_server/dlz_bind9.c:1132:4: error: 'dn' may be used uninitialized in this function [-Werror=maybe-uninitialized]
state->log(ISC_LOG_INFO, "failed to find dnsRecord for %s",
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ldb_dn_get_linearized(dn));
~~~~~~~~~~~~~~~~~~~~~~~~~~
Found by Undefined Sanitizer.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
dlz_bind9 has to count the number of times the plugin is 'created' by bind's
plugin manager so it doesn't repeat setup. Logging doesn't reflect this
reference counting logic properly and so messages like "samba_dlz: shutdown"
can, confusingly, come up when the database connection has not actually been
severed. This patch adds the necessary logging.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13655
Signed-off-by: Aaron Haslett <aaronhaslett@catalyst.net.nz>
Reviewed-by: Jeremy Allison <jra@samba.org>
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>
Modifies bind9 and internal dns to match windows static records behaviour.
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 function is duplicated in the BIND9 and RPC DNS servers.
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>
Replace uses of the string "sessionInfo" with the constant
DSDB_SESSION_INFO, and "networkSessionInfo" with the constant
DSDB_NETWORK_SESSION_INFO.
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This allows debugging of why the LDB failed to start up.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
The directory is normally empty if you did not provision or call
samba_upgradedns for the bind_dlz module.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12957
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
The code makes sure we are backwards compatible. It will first check if
we still have files in the private directory, if yes it will use those.
If the the file is not in the private directory it will try the binddns
dir.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlet <abartlet@samba.org>
Add support for dns wildcard records. i.e. if the following records
exist
exact.samba.example.com 3600 A 1.1.1.1
*.samba.example.com 3600 A 1.1.1.2
look up on exact.samba.example.com will return 1.1.1.1
look up on *.samba.example.com will return 1.1.1.2
look up on other.samba.example.com will return 1.1.1.2
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12952
Otherwise, we always report the first server we created/provisioned the AD domain on
which does not match AD behaviour. AD is multi-master so all RW servers are a master.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
This avoids using gensec_update_ev() with a nested event loop.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
BIND 9.10.x is strict when sending records via putrr and putnamedrr.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=10620
Thanks to Guenter Kukkukk for identifying the problem and resolution.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Guenter Kukkukk <kukks@samba.org>
Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Fri Nov 21 06:14:55 CET 2014 on sn-devel-104
Bug: https://bugzilla.samba.org/show_bug.cgi?id=10749
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Wed Aug 27 15:21:19 CEST 2014 on sn-devel-104
We don't have to keep everything arround while walking the whole zone.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Change-Id: I0a12c048fd4e667b9aa0777f99c8f8306fc090ea
Signed-off-by: Arvid Requate <requate@univention.de>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Kai Blin <kai@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Mon May 26 05:55:46 CEST 2014 on sn-devel-104
b9_record_match needs to consider all allowed representations of IPv6
addresses (RFC 2373), otherwise DNS subtractrdataset operations fail
due to differences in zero padding between bind9 frontend and ndr_pull
of a dnsp_DnssrvRpcRecord structure.
Change-Id: Ic0a1b16008458993dc644646d7f4ae3d3a3c5fed
Signed-off-by: Arvid Requate <requate@univention.de>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Kai Blin <kai@samba.org>
Reviewed-by: Guenter Kukkukk <kukks@samba.org>
The event context here was only specified in the server or admin-tool
context, which does not do network communication, so this only caused
a talloc_reference() and never any useful result.
The actual network communication code sets an event context directly
before making the network call.
Andrew Bartlett
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Mon Apr 28 02:24:57 CEST 2014 on sn-devel-104
