Refactor dns_dnssec_findmatchingkeys and dns_dnssec_keylistfromrdataset
to take into account the key store directories in case the zone is using
dnssec-policy (kasp). Add 'kasp' and 'keystores' parameters.
This requires the keystorelist to be stored inside the zone structure.
The calls to these functions in the DNSSEC tools can use NULL as the
kasp value, as dnssec-signzone does not (yet) support dnssec-policy,
and key collision is checked inside the directory where it is created.
Matthijs Mekking [Mon, 28 Feb 2022 10:50:43 +0000 (11:50 +0100)]
Create private keys with PKCS#11 object
If there is a keystore configured with a PKCS#11 URI, zones that
are using a dnssec-policy that uses such a keystore should create keys
via the PKCS#11 interface. Those keys are generally stored inside an
HSM.
Some changes to the code are required, to store the engine reference
into the keystore.
Matthijs Mekking [Fri, 18 Feb 2022 14:03:49 +0000 (15:03 +0100)]
Store key store reference instead of name
When creating the kasp structure, instead of storing the name of the
key store on keys, store a reference to the key store object instead.
This requires to build the keystore list prior to creating the kasp
structures, in the dnssec tools, the check code and the server code.
We will create a builtin keystore called "key-directory" which means
use the zone's key-directory as the key store.
The check code changes, because now the keystore is looked up before
creating the kasp structure (and if the keystore is not found, this
is an error). Instead of looking up the keystore after all
'dnssec-policy' clauses have been read.
Matthijs Mekking [Thu, 10 Feb 2022 15:51:32 +0000 (16:51 +0100)]
Check if key-store directory is not reused
Similar to key-directory, check for zones in different views and
different key and signing policies. Zones must be using different key
directories to store key files on disk.
Now that a key directory can be linked with a dnssec-policy key, the
'keydirexist' checking needs to be reshuffled.
Add tests for bad configuration examples, named-checkconf should catch
those. Also add test cases for a mix of key-directory and key-store
directory.
Add checkconf check to ensure that the used key-store in the keys
section exists. Error if that is not the case. We also don't allow
the special keyword 'key-directory' as that is internally used to
signal that the zone's key-directory should be used.
Matthijs Mekking [Tue, 25 Jan 2022 09:08:43 +0000 (10:08 +0100)]
Add code for creating keystore from config
Add code for configuring keystore objects. Add this to the "kaspconf"
code, as it is related to 'dnssec-policy' and it is too small to create
a separate file for it.
Matthijs Mekking [Thu, 20 Jan 2022 13:00:27 +0000 (14:00 +0100)]
Add configuration for key-store
Add new configuration for setting key stores. The new 'key-store'
statement allows users to configure key store backends. These can be
of type 'file' (that works the same as 'key-directory') or of type
'pkcs11'. In the latter case, keys should be stored in a HSM that is
accessible through a PKCS#11 interface.
Keys configured within 'dnssec-policy' can now also use the 'key-store'
option to set a specific key store.
Update the checkconf test to accomodate for the new configuration.
Tom Krizek [Mon, 27 Nov 2023 16:20:10 +0000 (17:20 +0100)]
Ensure tests use mock root server if configured
These tests have ns1 configured as a mock root server. Make sure it is
used in all config files of those tests, otherwise some queries could
leak to root nameservers.
Tom Krizek [Mon, 27 Nov 2023 14:39:37 +0000 (15:39 +0100)]
Blackhole queries to root servers in tests
Some tests don't have a mock root server configured, because they don't
need one. However, these tests might still leak queries to actual name
servers. Add a shared root hints file which can serve as a blackhole for
these queries.
Tom Krizek [Wed, 25 Oct 2023 12:10:18 +0000 (14:10 +0200)]
Remove obsolete ckdnsrps.sh script
As dnsrps and native test cases have been properly split up, the
ckdnsrps.sh script is no longer used anywhere, as the logic for
selecting these test cases is handled by pytest.
Tom Krizek [Tue, 24 Oct 2023 08:36:48 +0000 (10:36 +0200)]
Split up the dnsrps and native variants of rpz system tests
Previously, dnsrps test was executed as an optional part of the rpz and
rpzrecurse system tests. This was conceptually problematic, as the test
took the responsibility of running parts of the test framework -
cleaning files and setting up servers again.
Instead, allow these tests to execute either the native variant, or the
dnsrps one. To ensure the same test coverage, trigger both of these
variants as separate test cases from pytest.
Aydın Mercan [Thu, 4 Jan 2024 07:40:54 +0000 (10:40 +0300)]
Forward declare mallocx in isc/mem.h
cmocka.h and jemalloc.h/malloc_np.h has conflicting macro definitions.
While fixing them with push_macro for only malloc is done below, we only
need the non-standard mallocx interface which is easy to just define by
ourselves.
Ondřej Surý [Thu, 21 Dec 2023 10:12:54 +0000 (11:12 +0100)]
Add workaround for jemalloc linking order
Because we don't use jemalloc functions directly, but only via the
libisc library, the dynamic linker might pull the jemalloc library
too late when memory has been already allocated via standard libc
allocator.
Add a workaround round isc_mem_create() that makes the dynamic linker
to pull jemalloc earlier than libc.
Artem Boldariev [Thu, 11 Jan 2024 21:48:38 +0000 (23:48 +0200)]
TLS: improve framing by assembling DNS message in one buffer
This commit improves TLS messages framing by avoiding an extra call to
SSL_write_ex(). Before that we would use an extra SSL_write_ex() call
to pass DNS message length to OpenSSL. That could create an extra TLS
frame, increasing number of bytes sent due to frame header and
padding.
This commit fixes that by making the code pass both DNS message length
and data at once, just like old TLS code did.
It should improve compatibility with some buggy clients that expect
both DNS message length and data to be in one TLS frame.
Aydın Mercan [Tue, 2 Jan 2024 13:28:46 +0000 (16:28 +0300)]
Expose the TCP client count in statistics channel
The statistics channel does not expose the current number of TCP clients
connected, only the highwater. Therefore, users did not have an easy
means to collect statistics about TCP clients served over time. This
information could only be measured as a seperate mechanism via rndc by
looking at the TCP quota filled.
In order to expose the exact current count of connected TCP clients
(tracked by the "tcp-clients" quota) as a statistics counter, an
extra, dedicated Network Manager callback would need to be
implemented for that purpose (a counterpart of ns__client_tcpconn()
that would be run when a TCP connection is torn down), which is
inefficient. Instead, track the number of currently-connected TCP
clients separately for IPv4 and IPv6, as Network Manager statistics.
Artem Boldariev [Mon, 15 Jan 2024 15:21:45 +0000 (17:21 +0200)]
Skipping portions of cipher-suites test in FIPS mode
We need to skip some portions the system test in FIPS mode as some of
the algorithms used in the test are not available when using the FIPS
mode (e.g. TLS_CHACHA20_POLY1305_SHA256)
Artem Boldariev [Mon, 15 Jan 2024 15:03:50 +0000 (17:03 +0200)]
TCP: remove wrong INSIST(csock->recv_cb != NULL)
This commit removes wrong INSIST() condition as the assumption that if
'csock->recv_cb != NULL' iff 'csock->statichandle != NULL' is wrong.
There is no direct relation between 'csock->statichandle' and
'csock->recv_cb', as 'csock->statichandle' gets set when allocating a
handle regardless of 'csock->recv_cb' not being NULL, as it is
possible to attach to the handle without starting a read operation (at
the very least, it is correct to start writing before reading).
That condition made `cipher-suites` system test fail with crash on
some platforms in FIPS mode (namely, Oracle Linux 9) despite not being
related to FIPS at all.
Artem Boldariev [Fri, 12 Jan 2024 15:50:12 +0000 (17:50 +0200)]
Fix flawed logic when detecting same listener type
The older version of the code was reporting that listeners are going
to be of the same type after reconfiguration when switching from DoT
to HTTPS listener, making BIND abort its executions.
That was happening due to the flaw in logic due to which the code
could consider a current listener and a configuration for the new one
to be of the same type (DoT) even when the new listener entry is
explicitly marked as HTTP.
The checks for PROXY in between the configuration were masking that
behaviour, but when porting it to 9.18 (when there is no PROXY
support), the behaviour was exposed.
Now the code mirrors the logic in 'interface_setup()' closely (as it
was meant to).
Mark Andrews [Fri, 5 Jan 2024 00:08:33 +0000 (11:08 +1100)]
Report the type being filtered from an UPDATE
When processing UPDATE request DNSKEY, CDNSKEY and CDS record that
are managed by named are filtered out. The log message has been
updated to report the actual type rather that just DNSKEY.
Artem Boldariev [Wed, 10 Jan 2024 17:24:46 +0000 (19:24 +0200)]
Add a system test to verify listener transport change functionality
This commit adds a system test that helps to verify that changing a
listener transport by editing "listen-on" statements before
reconfiguration works as expected.
Artem Boldariev [Tue, 9 Jan 2024 17:16:26 +0000 (19:16 +0200)]
Recreate listeners on DNS transport change
This commit ensures that listeners are recreated on reconfiguration in
the case when their type changes (or when PROXY protocol type changes,
too).
Previously, if a "listen-on" statement was modified to represent a
different transport, BIND would not pick-up the change on
reconfiguration if listener type changes (e.g. DoH -> DoT) for a given
interface address and port combination. This commit fixes that by
recreating the listener.
Initially, that worked for most of the new transports as we would
recreate listeners on each reconfiguration for DoH and DoT. But at
some point we changed that in such a way that listeners were not
recreated to avoid rebinding a port as on some platforms only root can
do that for port numbers <1000, making some ports binding possible
only on start-up. We chose to asynchronously update listener socket
settings (like TLS contexts, HTTP settings) instead.
Now, we both avoid recreating the sockets if unnecessary and recreate
listeners when listener type changes.
Artem Boldariev [Fri, 1 Dec 2023 19:11:22 +0000 (21:11 +0200)]
Add a 'cipher-suites' option system test
This commit adds a new system test which verifies that using the
'cipher-suites' option actually works as expected (as well as adds
first TLSv1.3 specific tests).
Artem Boldariev [Thu, 30 Nov 2023 18:57:07 +0000 (20:57 +0200)]
Add TLS cipher-suites related low-level functionality
This commits adds low-level wrappers on top of
'SSL_CTX_set_ciphersuites()'. These are going to be a foundation
behind the 'cipher-suites' option of the 'tls' statement.
Aram Sargsyan [Tue, 9 Jan 2024 11:51:34 +0000 (11:51 +0000)]
Print a dig comment about the failed query consistently
Dig failed to print a comment about the reason of the unacceptable
query reply got from a server when there was no other query to
start in the lookup's chain.
Add an "else" block to print out the comment even when not starting
up the next query.
Aram Sargsyan [Tue, 9 Jan 2024 11:35:11 +0000 (11:35 +0000)]
Fix a possible dig/host crash in "NS search" mode
When getting a SERVFAIL reply from a query, 'host' tries to start
the next query in the lookup's list (also true for 'dig +nofail').
However, when running with the '-C' switch (or +nssearch for 'dig'),
all the queries in the lookup start from the beginning, so that logic
brings to a crash because of the attempted start of the query which
was already started.
Don't start the next query in the affected code path when in +nssearch
mode.
Mark Andrews [Wed, 10 Jan 2024 03:35:36 +0000 (14:35 +1100)]
Defer control channel message invalidation
The conn_shutdown() function is called whenever a control channel
connection is supposed to be closed, e.g. after a response to the client
is sent or when named is being shut down. That function calls
isccc_ccmsg_invalidate(), which resets the magic number in the structure
holding the messages exchanged over a given control channel connection
(isccc_ccmsg_t). The expectation here is that all operations related to
the given control channel connection will have been completed by the
time the connection needs to be shut down.
However, if named shutdown is initiated while a control channel message
is still in flight, some netmgr callbacks might still be pending when
conn_shutdown() is called and isccc_ccmsg_t invalidated. This causes
the REQUIRE assertion checking the magic number in ccmsg_senddone() to
fail when the latter function is eventually called, resulting in a
crash.
Fix by splitting up isccc_ccmsg_invalidate() into two separate
functions:
- isccc_ccmsg_disconnect(), which initiates TCP connection shutdown,
- isccc_ccmsg_invalidate(), which cleans up magic number and buffer,
and then:
- replacing all existing uses of isccc_ccmsg_invalidate() with calls
to isccc_ccmsg_disconnect(),
- only calling isccc_ccmsg_invalidate() when all netmgr callbacks are
guaranteed to have been run.
Tom Krizek [Wed, 10 Jan 2024 09:53:18 +0000 (10:53 +0100)]
Allow nsupdate test rerun on FreeBSD
The "exceeded time limit waiting for literal 'too many DNS UPDATEs
queued' in ns1/named.run" is prone to fail due to a timing issue.
Despite out efforts to stabilize it, the check still often fails on
FreeBSD in our CI. Allow the test to be re-run on this platform.
Tom Krizek [Mon, 8 Jan 2024 17:30:47 +0000 (18:30 +0100)]
Add missing dnssec-validation to ns4 in xfer test
This file was missing explicit dnssec-validation. Seems like it was
missed in our previous efforts, probably because of the different
filename / extension. Rename it to end with *.in to reflect that it is a
template file used by copy_setports.