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We should never use the TTL of an unauthenticated SOA to cache an
authenticated RR.
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We call it anyway as one of the first calls in dns_cache_put(), hence
there's no reason to do this multiple times.
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Let's keep entries for longer and more of them. After all, due to the
DNSSEC hookup the amount of RRs we need to store is much higher now.
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Let's make DNS class helpers more like DNS type helpers, let's move them
from resolved-dns-rr.[ch] into dns-type.[ch].
This also adds two new calls dns_class_is_pseudo() and
dns_class_is_valid_rr() which operate similar to dns_type_is_pseudo()
and dns_type_is_valid_rr() but for classes instead of types.
This should hopefully make handling of DNS classes and DNS types more
alike.
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OK to be unsigned
This large patch adds a couple of mechanisms to ensure we get NSEC3 and
proof-of-unsigned support into place. Specifically:
- Each item in an DnsAnswer gets two bit flags now:
DNS_ANSWER_AUTHENTICATED and DNS_ANSWER_CACHEABLE. The former is
necessary since DNS responses might contain signed as well as unsigned
RRsets in one, and we need to remember which ones are signed and which
ones aren't. The latter is necessary, since not we need to keep track
which RRsets may be cached and which ones may not be, even while
manipulating DnsAnswer objects.
- The .n_answer_cachable of DnsTransaction is dropped now (it used to
store how many of the first DnsAnswer entries are cachable), and
replaced by the DNS_ANSWER_CACHABLE flag instead.
- NSEC3 proofs are implemented now (lacking support for the wildcard
part, to be added in a later commit).
- Support for the "AD" bit has been dropped. It's unsafe, and now that
we have end-to-end authentication we don't need it anymore.
- An auxiliary DnsTransaction of a DnsTransactions is now kept around as
least as long as the latter stays around. We no longer remove the
auxiliary DnsTransaction as soon as it completed. THis is necessary,
as we now are interested not only in the RRsets it acquired but also
in its authentication status.
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Let's be safe and explicitly avoid that we add an auxiliary transaction
dependency on ourselves.
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The DNS_ANSWER_FOREACH macros do this internally anyway, no need to
duplicate this.
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We need no separate timeout anymore as soon as we received a reply, as
the auxiliary transactions have their own timeouts.
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they are destroyed
A failing transaction might cause other transactions to fail too, and
thus the set of transactions to notify for a transaction might change
while we are notifying them. Protect against that.
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We end up needing the stringified transaction key in many log messages,
hence let's simplify the logic and cache it inside of the transaction:
generate it the first time we need it, and reuse it afterwards. Free it
when the transaction goes away.
This also updated a couple of log messages to make use of this.
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Resolve: misc cleanups
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Manager status
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man: fix typo in journal-remote.conf(5)
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Fifth batch of DNSSEC support patches
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journal-remote: add documents in the unit files
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basic: ENABLE_DEBUG_HASHMAP needs <pthread.h>
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this is a follow-up for commit 11c3a36649e5e5e77db499c92f3
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Note that this is not complete yet, as we don't handle wildcard domains
correctly, nor handle domains correctly that use empty non-terminals.
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necessary
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It's not OK to drop these for our proof of non-existance checks.
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candidate state
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digest ids
Let's move this into a function digest_to_gcrypt() that we can reuse
later on when implementing NSEC3 validation.
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validation
Specifically, it appears as if the NSEC next domain name should be in
the original casing rather than canonical form, when validating.
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treewide: fix typos and indentation
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Output the same message when a request to change the log level is
received over dbus and through a signal. From the user point of view
those two operations are very similar and it's easy to think that the
dbus operation didn't work when the expected message is not emitted.
Also "downgrade" the message level to info, since this is a normal
user initiated action.
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This way we can only print the debug message when the status actually
changes. We also means we don't print anything when running in --user
mode, where status output is always disabled.
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build-sys: fix --disable-tests
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Fixes:
$ ./configure ... --disable-tests
$ make
$ sudo make check
FAIL: test/udev-test.pl
PASS: test/rule-syntax-check.py
PASS: test/sysv-generator-test.py
...
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build-sys: fix ./configure --enable-smack
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Fixes:
$ ./configure ... --enable-smack
$ make src/core/load-fragment-gperf.c
$ grep -i smack src/core/load-fragment-gperf.c
{"Swap.SmackProcessLabel", config_parse_warn_compat, DISABLED_CONFIGURATION, 0},
...
should be
{"Swap.SmackProcessLabel", config_parse_exec_smack_process_label, 0, offsetof(Swap, exec_context)},
...
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Another batch of DNSSEC fixes
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dns_resource_key_match_soa() and dns_resource_key_match_cname_or_dname()
may return errors as negative return values. Make sure to propagate
those.
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