Merge lib/isc/unix/ifiter_getifaddrs.c into lib/isc/unix/interfaceiter.c
and lib/isc/xoshiro128starstar.c into lib/isc/random.c. This avoids the
need for extra Automake directives required to process the "helper" *.c
files properly and makes the code more localized.
Turn the static check_bad_bits() function used by both Unix and Windows
systems into a "private" function and extract the "private" parts of
lib/isc/fsaccess.c to lib/isc/fsaccess_common_p.h. Instead of including
lib/isc/fsaccess.c from lib/isc/{unix,win32}/fsaccess.c, make the former
an independent C source file.
Rename lib/isc/fsaccess.c to lib/isc/fsaccess_common.c to prevent build
issues on Windows caused by multiple source files (lib/isc/fsaccess.c,
lib/isc/win32/fsaccess.c) being compiled into the same object file.
These changes improve consistency with the way "private" functions and
macros are treated elsewhere in the source tree.
Certain rules of the BIND development process are not codified anywhere
and/or are used inconsistently. In an attempt to improve this
situation, add a GitLab CI job which uses Danger Python to add comments
to merge requests when certain expectations are not met. Two categories
of feedback are used, only one of which - fail() - causes the GitLab CI
job to fail. Exclude dangerfile.py from Python QA checks as the way the
contents of that file are evaluated triggers a lot of Flake8 and PyLint
warnings.
The code in util/bindkeys.pl was overly complicated and it could not be
reused on Windows because redirecting stdin and stdout at the same time
from perl is overly complicated.
Now the util/bindkeys.pl accepts the input file as the first and only
argument and prints the header file to stdout. This allows the same
utility to be used from automake and win32/Configure script.
wire_test is not only used by the dnstap system test, but also in
fuzz testing. it doesn't need to be installed, but it's useful to have it
built when BIND is. this commit moves it back from bin/tests/system to
bin/tests, as a noinst_PROGRAM so that it's built by "make all" but
not installed.
Although in util/api-checker.sh we create textual reports, we don't
preserve them in job artifacts, but we should.
We don't want to keep all HTML pages present in the project root, but
just those produced by ABI checker.
The ARM and the manpages have been converted into Sphinx documentation
format.
Sphinx uses reStructuredText as its markup language, and many of its
strengths come from the power and straightforwardness of
reStructuredText and its parsing and translating suite, the Docutils.
The introduction of netmgr doubled the number of threads from which
dnstap data may be logged: previously, it could only happen from within
taskmgr worker threads; with netmgr, it can happen both from taskmgr
worker threads and from network threads. Since the argument passed to
fstrm_iothr_options_set_num_input_queues() was not updated to reflect
this change, some calls to fstrm_iothr_get_input_queue() can now return
NULL, effectively preventing some dnstap data from being logged.
Whether this bug is triggered or not depends on thread scheduling order
and packet distribution between network threads, but will almost
certainly be triggered on any recursive resolver sooner or later. Fix
by requesting the correct number of dnstap input queues to be allocated.
The current script used ephemeral port range which clashed with the
ports used by the tools (dig, ...), and the range always started with
the first port and there was 100 ports allocated for each system test.
In this commit, the first port has been randomized, the get_ports.sh
script outputs the variables (the output has to be eval'ed from run.sh)
and there's less waste in the port range.
There are several improvements over the default/previous behaviour of
the test log driver and log compiler:
* The system-test-driver.sh was dropped (it was used incorrectly)
* The run.sh script is now both log compiler and cli script to run
individual tests
* The custom-test-driver was added as extended version of the automake
test-driver with capability to tee the test output to stdout when
`--verbose yes` is passed to it (you can use LOG_DRIVER_FLAGS to
add the option by default)
* Makefile.am has been extended to honor V=1 for the system tests
test-driver (e.g. V=1 adds `--verbose yes` to AM_LOG_DRIVER_FLAGS)
The bin/tests/wire_test helper program is currently not included in any
Makefile.am file. Move its source code to bin/tests/system and build it
along other helper tools when dnstap support is requested as the
"dnstap" system test needs this tool in order to pass.
The libirs contained own re-implementations of the getaddrinfo,
getnameinfo and gai_strerror + irs_context and irs_dnsconf API that was
unused anywhere in the BIND 9.
Keep just the irs_resonf API that is being extensively used to parse
/etc/resolv.conf by several of BIND 9 tools.
The 'ephemeral' database implementation was used to provide a
lightweight database implemenation that doesn't cache results, and the
only place where it was really use is "samples" because delv is
overriding this to use "rbtdb" instead. Otherwise it was completely
unused.
* The 'ephemeral' cache DB (ecdb) implementation. An ecdb just provides
* temporary storage for ongoing name resolution with the common DB interfaces.
* It actually doesn't cache anything. The implementation expects any stored
* data is released within a short period, and does not care about the
* scalability in terms of the number of nodes.
Right before the release API version (LIBINTERFACE, LIBREVISION, LIBAGE)
for older and newer libraries tends to be the same. Given that, commit
hash can't be the determining factor here, Unix time of the commit
should suit us better and is placed after the API version. The commit
hash is preserved as it's useful to see it in the actual report.
'-nosymtbl' versions of libraries are not produced in Automake builds.
The rewrite of BIND 9 build system is a large work and cannot be reasonable
split into separate merge requests. Addition of the automake has a positive
effect on the readability and maintainability of the build system as it is more
declarative, it allows conditional and we are able to drop all of the custom
make code that BIND 9 developed over the years to overcome the deficiencies of
autoconf + custom Makefile.in files.
This squashed commit contains following changes:
- conversion (or rather fresh rewrite) of all Makefile.in files to Makefile.am
by using automake
- the libtool is now properly integrated with automake (the way we used it
was rather hackish as the only official way how to use libtool is via
automake
- the dynamic module loading was rewritten from a custom patchwork to libtool's
libltdl (which includes the patchwork to support module loading on different
systems internally)
- conversion of the unit test executor from kyua to automake parallel driver
- conversion of the system test executor from custom make/shell to automake
parallel driver
- The GSSAPI has been refactored, the custom SPNEGO on the basis that
all major KRB5/GSSAPI (mit-krb5, heimdal and Windows) implementations
support SPNEGO mechanism.
- The various defunct tests from bin/tests have been removed:
bin/tests/optional and bin/tests/pkcs11
- The text files generated from the MD files have been removed, the
MarkDown has been designed to be readable by both humans and computers
- The xsl header is now generated by a simple sed command instead of
perl helper
- The <irs/platform.h> header has been removed
- cleanups of configure.ac script to make it more simpler, addition of multiple
macros (there's still work to be done though)
- the tarball can now be prepared with `make dist`
- the system tests are partially able to run in oot build
Here's a list of unfinished work that needs to be completed in subsequent merge
requests:
- `make distcheck` doesn't yet work (because of system tests oot run is not yet
finished)
- documentation is not yet built, there's a different merge request with docbook
to sphinx-build rst conversion that needs to be rebased and adapted on top of
the automake
- msvc build is non functional yet and we need to decide whether we will just
cross-compile bind9 using mingw-w64 or fix the msvc build
- contributed dlz modules are not included neither in the autoconf nor automake
With the introduction of dnssec-policy, the aforementioned tools were
either rendered obsolete, or they will be replaced with dnssec-policy
based tools. Remove the tools and the requirement to have Python
installed. Python 3 is still being used for tests, so keep the autoconf
test, but make it much simpler.
Our python code didn't adhere to any coding standard. In this commit, we add
flame8 (https://pypi.org/project/flake8/), and pylint (https://www.pylint.org/).
There's couple of exceptions:
- ans.py scripts are not checked, nor fixed as part of this MR
- pylint's missing-*-docstring and duplicate-code checks have
been disabled via .pylintrc
Both exceptions should be removed in due time.
We introduce a isc_quota_attach_cb function - if ISC_R_QUOTA is returned
at the time the function is called, then a callback will be called when
there's quota available (with quota already attached). The callbacks are
organized as a LIFO queue in the quota structure.
It's needed for TCP client quota - with old networking code we had one
single place where tcp clients quota was processed so we could resume
accepting when the we had spare slots, but it's gone with netmgr - now
we need to notify the listener/accepter that there's quota available so
that it can resume accepting.
Remove unused isc_quota_force() function.
The isc_quote_reserve and isc_quota_release were used only internally
from the quota.c and the tests. We should not expose API we are not
using.
The two "functions" that isc/safe.h declared before were actually simple
defines to matching OpenSSL functions. The downside of the approach was
enforcing all users of the libisc library to explicitly list the include
path to OpenSSL and link with -lcrypto. By hiding the specific
implementation into the private namespace changing the defines into
simple functions, we no longer enforce this. In the long run, this
might also allow us to switch cryptographic library implementation
without affecting the downstream users.
The kasp system test is timing critical. The test passes on all
Linux based machines, but fails frequently on Windows. The test
takes a lot more time on Windows and at the final checks fail
because the expected next key event is too far off. For example:
I:kasp:check next key event for zone step2.algorithm-roll.kasp (570)
I:kasp:error: bad next key event time 20909 for zone \
step2.algorithm-roll.kasp (expect 21600)
I:kasp:failed
This is because the kasp system test calculates the time when the
next key event should occur based on the policy. This assumes that
named is able to do key management within a minute. But starting,
named, doing key management for other zones, and reconfiguring takes
much more time on Windows and thus the next key event on Windows is
much shorter than anticipated.
That this happens is a good thing because this means that the
correct next key event is used, but is not so nice for testing, as
it is hard to determine how much time named needed before finishing
the current key event.
Disable the kasp test on Windows now because it is blocking the
release. We know the cause of these test failures, and it is clear
that this is a fault in the test, not the code. Therefore we feel
comfortable disabling the test right now and work on a fix while
unblocking the release.
ABI checker tools generate HTML and TXT API compatibility reports of
BIND libraries. Comparison is being done between two bind source trees
which hold built BIND.
In the CI one version is the reference version defined by
BIND_BASELINE_VERSION variable, the latter one is the HEAD of branch
under test.
Add a test case for algorithm rollover. This is triggered by
changing the dnssec-policy. A new nameserver ns6 is introduced
for tests related to dnssec-policy changes.
This requires a slight change in check_next_key_event to only
check the last occurrence. Also, change the debug log message in
lib/dns/zone.c to deal with checks when no next scheduled key event
exists (and default to loadkeys interval 3600).
- Define the SLOT environment variable before starting the test. This
variable defaults to 0 and that does not work with SoftHSM 2.
- The system test expects the PIN environment variable to be set to
"1234" while bin/tests/prepare-softhsm2.sh sets it to "0000".
Update bin/tests/prepare-softhsm2.sh so that it sets the PIN to
"1234".
- Move contents of bin/tests/system/pkcs11/prereq.sh to
bin/tests/system/pkcs11/setup.sh as the former was creating a file
called "supported" that was getting removed by the latter before
bin/tests/system/pkcs11/tests.sh could access it.
- Fix typo in "have_ecx".
- the configuration summary reported zlib compression was not
supported even when it was.
- when bind.keys.h was regenerated it violated clang-format style.
- add util/cformat.sh, which runs clang-format on all C files with
the default .clang-format, and on all header files with a slightly
modified version.
- use correct bracing after multi-line control statements
- stop aligning variable declarations to avoid problems with pointer
alignment, but retain aligned declarations in header files so that
struct definitions look cleaner.
- static function prototypes in C files can skip the line break after
the return type, but function prototypes in header files still have
the line break.
- don't break-before-brace in function definitions. ISC style calls
for braces on the same line when function parameters fit on a single
line, and a line break if they don't, but clang-format doesn't yet
support that distinction. one-line function definitions are about
four times more common than multi-line, so let's use the option that
deviates less.
- Add quotes before and after zone name when generating "addzone"
input so avoid "unexpected token" errors.
- Use a hex digest for zone filenames when the zone or view name
contains a slash.
- Test with a domain name containing a slash.
- Incidentally added 'catzhash.py' to contrib/scripts to generate
hash labels for catalog zones, as it was needed to write the test.
These functions can be used to pass a uv handle between threads in a
safe manner. The other option is to use uv_pipe and pass the uv_handle
via IPC, which is way more complex. uv_export() and uv_import() functions
existed in libuv at some point but were removed later. This code is
based on the original removed code.
The Windows version of the code uses two functions internal to libuv;
a patch for libuv is attached for exporting these functions.
The util/prepare-softhsm2.sh script is useful for initializing a working
SoftHSM environment which can be used by unit tests and system tests.
However, since it is a test-specific script, it does not really belong
in the util/ subdirectory which is mostly pruned during the BIND source
tarball creation process. Move the prepare-softhsm2.sh script to
bin/tests/ so that its location is more appropriate for its purpose and
also so that it does not get removed during the BIND source tarball
creation process, allowing it to be used for setting up test
environments for tarball-based builds.
The first step in all existing setup.sh scripts is to call clean.sh. To
reduce code duplication and ensure all system tests added in the future
behave consistently with existing ones, invoke clean.sh from run.sh
before calling setup.sh.
Since the role of the bin/tests/system/clean.sh script has now been
reduced to calling a given system test's clean.sh script, remove the
former altogether and replace its only use with a direct invocation of
the latter.
Some semantic patches are meant to be run just once, as they work on
functions with changed prototypes. We keep them for reference, but
disabled them from the CI to save time.
The "runtime" system test currently fails on Windows because it waits
for named to log a message indicating successful startup ("running"),
but that never happens since named on Windows fails to open the
configuration file as its path includes control characters.
Instead of putting control characters in directory names, put them in
the value of the -D command line switch passed to named, which is used
for identifying an instance of named in a process listing and whose
value is completely ignored by named, but still logged.
While a similar check using special characters appears to be working
fine on Windows for the time being, modify it in the same way to avoid
potential future problems on other platforms and make the test cleaner.
Intertwining release notes from different BIND releases in a single XML
file has caused confusion in the past due to different (and often
arbitrary) approaches to keeping/removing release notes from older
releases on different BIND branches. Divide doc/arm/notes.xml into
per-version sections to simplify determining the set of changes
introduced by a given release and to make adding/reviewing release notes
less error-prone.
- ns__client_request() is now called by netmgr with an isc_nmhandle_t
parameter. The handle can then be permanently associated with an
ns_client object.
- The task manager is paused so that isc_task events that may be
triggred during client processing will not fire until after the netmgr is
finished with it. Before any asynchronous event, the client MUST
call isc_nmhandle_ref(client->handle), to prevent the client from
being reset and reused while waiting for an event to process. When
the asynchronous event is complete, isc_nmhandle_unref(client->handle)
must be called to ensure the handle can be reused later.
- reference counting of client objects is now handled in the nmhandle
object. when the handle references drop to zero, the client's "reset"
callback is used to free temporary resources and reiniialize it,
whereupon the handle (and associated client) is placed in the
"inactive handles" queue. when the sysstem is shutdown and the
handles are cleaned up, the client's "put" callback is called to free
all remaining resources.
- because client allocation is no longer handled in the same way,
the '-T clienttest' option has now been removed and is no longer
used by any system tests.
- the unit tests require wrapping the isc_nmhandle_unref() function;
when LD_WRAP is supported, that is used. otherwise we link a
libwrap.so interposer library and use that.
This is a replacement for the existing isc_socket and isc_socketmgr
implementation. It uses libuv for asynchronous network communication;
"networker" objects will be distributed across worker threads reading
incoming packets and sending them for processing.
UDP listener sockets automatically create an array of "child" sockets
so each worker can listen separately.
TCP sockets are shared amongst worker threads.
A TCPDNS socket is a wrapper around a TCP socket, which handles the
the two-byte length field at the beginning of DNS messages over TCP.
(Other wrapper socket types can be implemented in the future to handle
DNS over TLS, DNS over HTTPS, etc.)
'dnssec-policy' can now also be set on the options and view level and
a zone that does not set 'dnssec-policy' explicitly will inherit it
from the view or options level.
This requires a new keyword to be introduced: 'none'. If set to
'none' the zone will not be DNSSEC maintained, in other words it will
stay unsigned. You can use this to break the inheritance. Of course
you can also break the inheritance by referring to a different
policy.
The keywords 'default' and 'none' are not allowed when configuring
your own dnssec-policy statement.
Add appropriate tests for checking the configuration (checkconf)
and add tests to the kasp system test to verify the inheritance
works.
Edit the kasp system test such that it can deal with unsigned zones
and views (so setting a TSIG on the query).
Add more tests for kasp:
- Add tests for different algorithms.
- Add a test to ensure that an edit in an unsigned zone is
picked up and properly signed.
- Add two tests that ensures that a zone gets signed when it is
configured as so-called 'inline-signing'. In other words, a
secondary zone that is configured with a 'dnssec-policy'. A zone
that is transferred over AXFR or IXFR will get signed.
- Add a test to ensure signatures are reused if they are still
fresh enough.
- Adds two more tests to verify that expired and unfresh signatures
will be regenerated.
- Add tests for various cases with keys already available in the
key-directory.
Add a key manager to named. If a 'dnssec-policy' is set, 'named'
will run a key manager on the matching keys. This will do a couple
of things:
1. Create keys when needed (in case of rollover for example)
according to the set policy.
2. Retire keys that are in excess of the policy.
3. Maintain key states according to "Flexible and Robust Key
Rollover" [1]. After key manager ran, key files will be saved to
disk.
[1] https://matthijsmekking.nl/static/pdf/satin2012-Schaeffer.pdf
KEY GENERATION
Create keys according to DNSSEC policy. Zones configured with
'dnssec-policy' will allow 'named' to create DNSSEC keys (similar
to dnssec-keymgr) if not available.
KEY ROLLOVER
Rather than determining the desired state from timing metadata,
add a key state goal. Any keys that are created or picked from the
key ring and selected to be a successor has its key state goal set
to OMNIPRESENT (this key wants to be signing!). At the same time,
a key that is being retired has its key state goal set to HIDDEN.
The keymgr state machine with the three rules will make sure no
introduction or withdrawal of DNSSEC records happens too soon.
KEY TIMINGS
All timings are based on RFC 7583.
The keymgr will return when the next action is happening so
that the zone can set the proper rekey event. Prior to this change
the rekey event will run every hour by default (configurable),
but with kasp we can determine exactly when we need to run again.
The prepublication time is derived from policy.
This commit adds code for generating keys with dnssec-keygen given
a specific dnssec-policy.
The dnssec-policy can be set with a new option '-k'. The '-l'
option can be used to set a configuration file that contains a
specific dnssec-policy.
Because the dnssec-policy dictates how the keys should look like,
many of the existing dnssec-keygen options cannot be used together
with '-k'.
If the dnssec-policy lists multiple keys, dnssec-keygen has now the
possibility to generate multiple keys at one run.
Add two tests for creating keys with '-k': One with the default
policy, one with multiple keys from the configuration.
This stores the dnssec-policy configuration and adds methods to
create, destroy, and attach/detach, as well as find a policy with
the same name in a list.
Also, add structures and functions for creating and destroying
kasp keys.
This commit introduces the initial `dnssec-policy` configuration
statement. It has an initial set of options to deal with signature
and key maintenance.
Add some checks to ensure that dnssec-policy is configured at the
right locations, and that policies referenced to in zone statements
actually exist.
Add some checks that when a user adds the new `dnssec-policy`
configuration, it will no longer contain existing DNSSEC
configuration options. Specifically: `inline-signing`,
`auto-dnssec`, `dnssec-dnskey-kskonly`, `dnssec-secure-to-insecure`,
`update-check-ksk`, `dnssec-update-mode`, `dnskey-sig-validity`,
and `sig-validity-interval`.
Test a good kasp configuration, and some bad configurations.
The ttlval configuration types are replaced by duration configuration
types. The duration is an ISO 8601 duration that is going to be used
for DNSSEC key timings such as key lifetimes, signature resign
intervals and refresh periods, etc. But it is also still allowed to
use the BIND ttlval ways of configuring intervals (number plus
optional unit).
A duration is stored as an array of 7 different time parts.
A duration can either be expressed in weeks, or in a combination of
the other datetime indicators.
Add several unit tests to ensure the correct value is parsed given
different string values.
The OASIS pkcs11.h header has a restrictive license. Replace the
pkcs11.h pkcs11f.h and pkcs11t.h headers with pkcs11.h from p11-kit.
For source distribution, the license for the OASIS headers itself
doesn't pose any licensing problem when combined with MPL license, but
it possibly creates problem for downstream distributors of BIND 9.
- this required modification to the code that generates grammar text for
the documentation, because the "dnssec-lookaside" option spanned more
than one line in doc/misc/options, so grepping out only the lines
marked "// obsolete" didn't remove the whole option. this commit adds
an option to cfg_test to print named.conf clauses only if they don't
have the obsolete, ancient, test-only, or not-yet-implemented flags
set.
The isc-config.sh script was introduced before pkg-config as is a purely
historical thing. There are two reason for removal of isc-config.sh scripts:
a) The BIND 9 libraries are now meant to be used only from BIND 9, so there's no
reason to provide convenience script to link with the libraries.
b) Even if that was not the case, we should and would replace the isc-config.sh
with respective pkg-config (.pc) file for every library.
The coccinelle and util/update_copyright script have different
idea about how the whitespace should look like. Revert the script
to the previous version, so it doesn't mangle the files in place,
and deal with just whitespace changes.
When printing a packet, dnstap-read checks whether its text form takes
up more than the 2048 bytes allocated for the output buffer by default.
If that is the case, the output buffer is automatically expanded, but
the truncated output is left in the buffer, resulting in malformed data
being printed. Clear the output buffer before expanding it to prevent
this issue from occurring.
- "--with-geoip" is used to enable the legacy GeoIP library.
- "--with-geoip2" is used to enable the new GeoIP2 library
(libmaxminddb), and is on by default if the library is found.
- using both "--with-geoip" and "--with-geoip2" at the same time
is an error.
- an attempt is made to determine the default GeoIP2 database path at
compile time if pkg-config is able to report the module prefix. if
this fails, it will be necessary to set the path in named.conf with
geoip-directory
- Makefiles have been updated, and a stub lib/dns/geoip2.c has been
added for the eventual GeoIP2 search implementation.
The json-c have previously leaked into the global namespace leading
to forced -I<include_path> for every compilation unit using isc/xml.h
header. This MR fixes the usage making the caller object opaque.
The libxml2 have previously leaked into the global namespace leading
to forced -I<include_path> for every compilation unit using isc/xml.h
header. This MR fixes the usage making the caller object opaque.
This adds tests to the statschannel system test for testing if
the dnskey sign operation counters are incremented correctly.
It tests three cases:
1. A zone maintenance event where all the signatures that are about
to expire are resigned.
2. A dynamic update event where the new RR and other relevant records
(SOA, NSEC) are resigned.
3. Adding a standby key, that means the DNSKEY and SOA RRset are
resigned.
The differences between two files are very minimal and most of the
code is common. Merge those two files and use #ifdef WIN32 to include
the right bits on Windows.
- change references to trusted-keys to dnssec-keys with static-key
- rebuild doc/misc/options and other generated grammar doc
- add a "see MANAGED-KEYS" note when building named.conf.docbook
- managed-keys is now deprecated as well as trusted-keys, though
it continues to work as a synonym for dnssec-keys
- references to managed-keys have been updated throughout the code.
- tests have been updated to use dnssec-keys format
- also the trusted-keys entries have been removed from the generated
bind.keys.h file and are no longer generated by bindkeys.pl.
Fuzz input to dns_rdata_fromwire(). Then convert the result
to text, back to wire format, to multiline text, and back to wire
format again, checking for consistency throughout the sequence.
this moves the creation of "parallel.mk" into a separate shell script
instead of bin/tests/system/Makefile. that shell script can now be
executed by runall.sh, allowing us to make use of the cygwin "make"
command, which supports parallel execution.
Implement a helper function which, given an input string:
- copies it verbatim if it contains at least one path separator,
- prepends the named plugin installation directory to it otherwise.
This function will allow configuration parsing code to conveniently
determine the full path to a plugin module given either a path or a
filename.
While other, simpler ways exist for making sure filenames passed to
dlopen() cause the latter to look for shared objects in a specific
directory, they are very platform-specific. Using full paths is thus
likely the most portable and reliable solution.
Also added unit tests for ns_plugin_expandpath() to ensure it behaves
as expected for absolute paths, relative paths, and filenames, for
various target buffer sizes.
(Note: plugins share a directory with named on Windows; there is no
default plugin path. Therefore the source path is copied to the
destination path with no modification.)
For consistency between all system tests, add missing setup.sh scripts
for tests which do not have one yet and ensure every setup.sh script
calls its respective clean.sh script.
Temporary files created by a given system test should be removed by its
clean.sh script, not its setup.sh script. Remove redundant "rm"
invocations from setup.sh scripts. Move required "rm" invocations from
setup.sh scripts to their corresponding clean.sh scripts.
These tests check if a key with an unsupported algorithm in
managed-keys is ignored and when seeing an algorithm rollover to
an unsupported algorithm, the new key will be ignored too.
removed the SDB databases in contrib/sdb as they hadn't been
maintained in some time, and were no longer able to link to named
without modification. also:
- cleaned up contrib/README, which still referred to contrib
subdirectores that were removed already, and linked to an obsolete URL.
- removed references to sdb in doc/misc/roadmap and doc/misc/sdb.
Ensure IXFR statistics are calculated correctly by dig and named, both
for incoming and outgoing transfers. Disable EDNS when using dig to
request an IXFR so that the same reference file can be used for testing
statistics calculated by both dig and named (dig uses EDNS by default
when sending transfer requests, which affects the number of bytes
transferred).
Ensure AXFR statistics are calculated correctly by dig and named, both
for incoming and outgoing transfers. Rather than employing a zone which
is already used in the "xfer" system test, create a new one whose AXFR
form spans multiple TCP messages. Disable EDNS when using dig to
request an AXFR so that the same reference file can be used for testing
statistics calculated by both dig and named (dig uses EDNS by default
when sending transfer requests, which affects the number of bytes
transferred).
dig retries a TCP query when a server closes the connection prematurely.
However, dig's exit code remains unaffected even if the second attempt
to get a response also fails with the same error for the same lookup,
which should not be the case. Ensure the exit code is updated
appropriately when a retry triggered by a TCP EOF condition fails.
Since following a delegation resets most fetch context state, address
marks (FCTX_ADDRINFO_MARK) set inside lib/dns/resolver.c are not
preserved when a delegation is followed. This is fine for full
recursive resolution but when named is configured with "forward first;"
and one of the specified forwarders times out, triggering a fallback to
full recursive resolution, that forwarder should no longer be consulted
at each delegation point subsequently reached within a given fetch
context.
Add a new badnstype_t enum value, badns_forwarder, and use it to mark a
forwarder as bad when it times out in a "forward first;" configuration.
Since the bad server list is not cleaned when a fetch context follows a
delegation, this prevents a forwarder from being queried again after
falling back to full recursive resolution. Yet, as each fetch context
maintains its own list of bad servers, this change does not cause a
forwarder timeout to prevent that forwarder from being used by other
fetch contexts.
- "hook" is now used only for hook points and hook actions
- the "hook" statement in named.conf is now "plugin"
- ns_module and ns_modlist are now ns_plugin and ns_plugins
- ns_module_load is renamed ns_plugin_register
- the mandatory functions in plugin modules (hook_register,
hook_check, hook_version, hook_destroy) have been renamed
- move hooks.h to public include directory
- ns_hooktable_init() initializes a hook table. if NULL is passed in, it
initializes the global hook table
- ns_hooktable_save() saves a pointer to the current global hook table.
- ns_hooktable_reset() replaces the global hook table with different
one
- ns_hook_add() adds hooks at specified hook points in a hook table (or
the global hook table if the specified table is NULL)
- load and unload functions support dlopen() of hook modules (this is
adapted from dyndb and not yet functional)
- began adding new hook points to query.c
To minimize the effort required to set up IANA root zone mirroring,
define a default master server list for the root zone and use it when
that zone is to be mirrored and no master server list was explicitly
specified. Contents of that list are taken from RFC 7706 and are
subject to change in future releases.
Since the static get_masters_def() function in bin/named/config.c does
exactly what named_zone_configure() in bin/named/zoneconf.c needs to do,
make the former non-static and use it in the latter to prevent code
duplication.
Since mirror zone data is treated as cache data for access control
purposes, configuring a mirror zone and disabling recursion at the same
time would effectively prevent mirror zone data from being used since
disabling recursion also disables cache access to all clients by
default. Even though this behavior can be inhibited by configuration,
mirror zones are a recursive resolver feature and thus recursion is now
required to use them.
Ignore the fact that certain configurations might still trick named into
assuming recursion is enabled when it effectively is not since this
change is not meant to put a hard policy in place but rather just to
prevent accidental mirror zone misuse.
Previous way of handling NOTIFY settings for mirror zones was a bit
tricky: any value of the "notify" option was accepted, but it was
subsequently overridden with dns_notifytype_explicit. Given the way
zone configuration is performed, this resulted in the following
behavior:
- if "notify yes;" was set explicitly at any configuration level or
inherited from default configuration, it was silently changed and so
only hosts specified in "also-notify", if any, were notified,
- if "notify no;" was set at any configuration level, it was
effectively honored since even though zone->notifytype was silently
set to dns_notifytype_explicit, the "also-notify" option was never
processed due to "notify no;" being set.
Effectively, this only allowed the hosts specified in "also-notify" to
be notified, when either "notify yes;" or "notify explicit;" was
explicitly set or inherited from default configuration.
Clean up handling of NOTIFY settings for mirror zones by:
- reporting a configuration error when anything else than "notify no;"
or "notify explicit;" is set for a mirror zone at the zone level,
- overriding inherited "notify yes;" setting with "notify explicit;"
for mirror zones,
- informing the user when the "notify" setting is overridden, unless
the setting in question was inherited from default configuration.
Use a zone's 'type' field instead of the value of its DNS_ZONEOPT_MIRROR
option for checking whether it is a mirror zone. This makes said zone
option and its associated helper function, dns_zone_mirror(), redundant,
so remove them. Remove a check specific to mirror zones from
named_zone_reusable() since another check in that function ensures that
changing a zone's type prevents it from being reused during
reconfiguration.
Commonly used network configuration tools write scoped IPv6 nameserver
addresses to /etc/resolv.conf. libirs only handles these when it is
compiled with -DIRS_HAVE_SIN6_SCOPE_ID, which is not the default, and
only handles numeric scopes, which is not what network configuration
tools typically use. This causes dig to be practically unable to handle
scoped IPv6 nameserver addresses in /etc/resolv.conf.
Fix the problem by:
- not requiring a custom compile-time flag to be set in order for
scoped IPv6 addresses to be processed by getaddrinfo(),
- parsing non-numeric scope identifiers using if_nametoindex(),
- setting the sin6_scope_id field in struct sockaddr_in6 structures
returned by getaddrinfo() even if the AI_CANONNAME flag is not set.
- this enables memory to be allocated and freed in dyndb modules
when named is linked statically. when we standardize on libtool,
this should become unnecessary.
- also, simplified the isc_mem_create/createx API by removing
extra compatibility functions
to update file, run: uncrustify --replace -c $TOP/.uncrustify.cfg <filename>
- note that if this is in the user's $HOME dir, it's the default
uncrustify config path name. this can be overridden with
'uncrustify -c filenaeme' or the UNCRUSTIFY_CONFIG environment
variable
