We should also lock kasp when reading key files, because at the same
time the zone in another view may be updating the key file.
(cherry picked from commit 252a1ae0a1)
if dns_updatemethod_date is used do that the returned method is only
set to dns_updatemethod_increment if the new serial does not encode
the current day (YYYYMMDDXX).
(cherry picked from commit 5d21042ed8)
Add a new built-in policy "insecure", to be used to gracefully unsign
a zone. Previously you could just remove the 'dnssec-policy'
configuration from your zone statement, or remove it.
The built-in policy "none" (or not configured) now actually means
no DNSSEC maintenance for the corresponding zone. So if you
immediately reconfigure your zone from whatever policy to "none",
your zone will temporarily be seen as bogus by validating resolvers.
This means we can remove the functions 'dns_zone_use_kasp()' and
'dns_zone_secure_to_insecure()' again. We also no longer have to
check for the existence of key state files to figure out if a zone
is transitioning to insecure.
(cherry picked from commit 2710d9a11d)
The draft says that the NSEC(3) TTL must have the same TTL value
as the minimum of the SOA MINIMUM field and the SOA TTL. This was
always the intended behaviour.
Update the zone structure to also track the SOA TTL. Whenever we
use the MINIMUM value to determine the NSEC(3) TTL, use the minimum
of MINIMUM and SOA TTL instead.
There is no specific test for this, however two tests need adjusting
because otherwise they failed: They were testing for NSEC3 records
including the TTL. Update these checks to use 600 (the SOA TTL),
rather than 3600 (the SOA MINIMUM).
(cherry picked from commit 9af8caa733)
Configure "none" as a builtin policy. Change the 'cfg_kasp_fromconfig'
api so that the 'name' will determine what policy needs to be
configured.
When transitioning a zone from secure to insecure, there will be
cases when a zone with no DNSSEC policy (dnssec-policy none) should
be using KASP. When there are key state files available, this is an
indication that the zone once was DNSSEC signed but is reconfigured
to become insecure.
If we would not run the keymgr, named would abruptly remove the
DNSSEC records from the zone, making the zone bogus. Therefore,
change the code such that a zone will use kasp if there is a valid
dnssec-policy configured, or if there are state files available.
(cherry picked from commit cf420b2af0)
When using the `unixtime` or `date` method to update the SOA serial,
`named` and `dnssec-signzone` would silently fallback to `increment`
method to prevent the new serial number to be smaller than the old
serial number (using the serial number arithmetics). Add a warning
message when such fallback happens.
(cherry picked from commit ef685bab5c)
The first attempt to add DNSSEC sign statistics was naive: for each
zone we allocated 64K counters, twice. In reality each zone has at
most four keys, so the new approach only has room for four keys per
zone. If after a rollover more keys have signed the zone, existing
keys are rotated out.
The DNSSEC sign statistics has three counters per key, so twelve
counters per zone. First counter is actually a key id, so it is
clear what key contributed to the metrics. The second counter
tracks the number of generated signatures, and the third tracks
how many of those are refreshes.
This means that in the zone structure we no longer need two separate
references to DNSSEC sign metrics: both the resign and refresh stats
are kept in a single dns_stats structure.
Incrementing dnssecsignstats:
Whenever a dnssecsignstat is incremented, we look up the key id
to see if we already are counting metrics for this key. If so,
we update the corresponding operation counter (resign or
refresh).
If the key is new, store the value in a new counter and increment
corresponding counter.
If all slots are full, we rotate the keys and overwrite the last
slot with the new key.
Dumping dnssecsignstats:
Dumping dnssecsignstats is no longer a simple wrapper around
isc_stats_dump, but uses the same principle. The difference is that
rather than dumping the index (key tag) and counter, we have to look
up the corresponding counter.
(cherry picked from commit 705810d577)
On Windows, C11 localtime_r() and gmtime_r() functions are not
available. While localtime() and gmtime() functions are already thread
safe because they use Thread Local Storage, it's quite ugly to #ifdef
around every localtime_r() and gmtime_r() usage to make the usage also
thread-safe on POSIX platforms.
The commit adds wrappers around Windows localtime_s() and gmtime_s()
functions.
NOTE: The implementation of localtime_s and gmtime_s in Microsoft CRT
are incompatible with the C standard since it has reversed parameter
order and errno_t return type.
(cherry picked from commit 08f4c7d6c0)
Start enforcing the clang-format rules on changed files
Closes#46
See merge request isc-projects/bind9!3063
(cherry picked from commit a04cdde45d)
d2b5853b Start enforcing the clang-format rules on changed files
618947c6 Switch AlwaysBreakAfterReturnType from TopLevelDefinitions to All
654927c8 Add separate .clang-format files for headers
5777c44a Reformat using the new rules
60d29f69 Don't enforce copyrights on .clang-format
adjust clang-format options to get closer to ISC style
See merge request isc-projects/bind9!3061
(cherry picked from commit d3b49b6675)
0255a974 revise .clang-format and add a C formatting script in util
e851ed0b apply the modified style
Add curly braces using uncrustify and then reformat with clang-format back
Closes#46
See merge request isc-projects/bind9!3057
(cherry picked from commit 67b68e06ad)
36c6105e Use coccinelle to add braces to nested single line statement
d14bb713 Add copy of run-clang-tidy that can fixup the filepaths
056e133c Use clang-tidy to add curly braces around one-line statements
Reformat source code with clang-format
Closes#46
See merge request isc-projects/bind9!2156
(cherry picked from commit 7099e79a9b)
4c3b063e Import Linux kernel .clang-format with small modifications
f50b1e06 Use clang-format to reformat the source files
11341c76 Update the definition files for Windows
df6c1f76 Remove tkey_test (which is no-op anyway)
Update dns_dnssec_keyactive to differentiate between the roles ZSK
and KSK. A key is active if it is signing but that differs per role.
A ZSK is signing if its ZRRSIG state is in RUMOURED or OMNIPRESENT,
a KSK is signing if its KRRSIG state is in RUMOURED or OMNIPRESENT.
This means that a key can be actively signing for one role but not
the other. Add checks in inline signing (zone.c and update.c) to
cover the case where a CSK is active in its KSK role but not the ZSK
role.
Update the signing code in lib/dns/zone.c and lib/dns/update.c to
use kasp logic if a dnssec-policy is enabled.
This means zones with dnssec-policy should no longer follow
'update-check-ksk' and 'dnssec-dnskey-kskonly' logic, instead the
KASP keys configured dictate which RRset gets signed with what key.
Also use the next rekey event from the key manager rather than
setting it to one hour.
Mark the zone dynamic, as otherwise a zone with dnssec-policy is
not eligble for automatic DNSSEC maintenance.
When doing regular signing expiry time is jittered to make sure
that the re-signing times are not clumped together. This expands
this behaviour to expiry times of dynamically added records.
When incrementally re-signing a zone use the full jitter range if
the server appears to have been offline for greater than 5 minutes
otherwise use a small jitter range of 3600 seconds. This will stop
the signatures becoming more clustered if the server has been off
line for a significant period of time (> 5 minutes).
Replace dns_fixedname_init() calls followed by dns_fixedname_name()
calls with calls to dns_fixedname_initname() where it is possible
without affecting current behavior and/or performance.
This patch was mostly prepared using Coccinelle and the following
semantic patch:
@@
expression fixedname, name;
@@
- dns_fixedname_init(&fixedname);
...
- name = dns_fixedname_name(&fixedname);
+ name = dns_fixedname_initname(&fixedname);
The resulting set of changes was then manually reviewed to exclude false
positives and apply minor tweaks.
It is likely that more occurrences of this pattern can be refactored in
an identical way. This commit only takes care of the low-hanging fruit.
properly determining if there were active KSK and
ZSK keys for a algorithm when update-check-ksk is
true (default) leaving records unsigned. [RT #46743]
