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Better support of OPENPGPKEY, CAA, TLSA packets and tests
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$ systemd-resolve --openpgp zbyszek@fedoraproject.org
d08ee310438ca124a6149ea5cc21b6313b390dce485576eff96f8722._openpgpkey.fedoraproject.org. IN OPENPGPKEY
mQINBFBHPMsBEACeInGYJCb+7TurKfb6wGyTottCDtiSJB310i37/6ZYoeIay/5soJjlM
yfMFQ9T2XNT/0LM6gTa0MpC1st9LnzYTMsT6tzRly1D1UbVI6xw0g0vE5y2Cjk3xUwAyn
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It's annoying to have the exact same function in three places.
It's stored in src/shared, but it's not added to the library to
avoid the dependency on libgcrypt.
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This should be handled fine now by .dir-locals.el, so need to carry that
stuff in every file.
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This clean-ups timeout handling in PID 1. Specifically, instead of storing 0 in internal timeout variables as
indication for a disabled timeout, use USEC_INFINITY which is in-line with how we do this in the rest of our code
(following the logic that 0 means "no", and USEC_INFINITY means "never").
This also replace all usec_t additions with invocations to usec_add(), so that USEC_INFINITY is properly propagated,
and sd-event considers it has indication for turning off the event source.
This also alters the deserialization of the units to restart timeouts from the time they were originally started from.
Before this patch timeouts would be restarted beginning with the time of the deserialization, which could lead to
artificially prolonged timeouts if a daemon reload took place.
Finally, a new RuntimeMaxSec= setting is introduced for service units, that specifies a maximum runtime after which a
specific service is forcibly terminated. This is useful to put time limits on time-intensive processing jobs.
This also simplifies the various xyz_spawn() calls of the various types in that explicit distruction of the timers is
removed, as that is done anyway by the state change handlers, and a state change is always done when the xyz_spawn()
calls fail.
Fixes: #2249
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Make sure we can properly process resource limit properties. Specifically, allow transient configuration of both the
soft and hard limit, the same way from the unit files. Previously, only the the hard rlimits could be configured but
they'd implicitly spill into the soft hard rlimits.
This also updates the client-side code to be able to parse hard/soft resource limit specifications. Since we need to
serialize two properties in bus_append_unit_property_assignment() now, the marshalling of the container around it is
now moved into the function itself. This has the benefit of shortening the calling code.
As a side effect this now beefs up the rlimit parser of "systemctl set-property" to understand time and disk sizes
where that's appropriate.
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Let's write the property name and value in one call, when that's possible, shorthing our code a bit.
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Clear up some confusion regarding the USec and Sec suffixes we use. In configuration files we usually use the Sec
suffix, to indicate the implied time unit if none is specified. The respective bus properties however use the USec
property, since they expose 64bit unsigned integers containing time in µs.
Before this patch timer units exposed a bus property AccuracyUSec (which hence is the correct name) but when parsing
transient property data would look for AccuracySec instead (which is incorrect). This patch ensures we look for
AccuracySec correctly, but keeps the code for AccuracyUSec in place for compatibility, but adds a warning to ensure
that apps are updated to use the right property.
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Resolved 2
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This result can only happen if the job was a reload job for an inactive unit. Make the error message actually say that.
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Some minor simplifications. Shouldn't change codepaths.
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Ask password unicode fix
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https://bugzilla.redhat.com/show_bug.cgi?id=1301984
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Let's make sure the root domain is normalized to ".", rather than then empty string, so that there's actually something
to see on screen. Normally, we don't append a trailing dot to normalized domain names, but do so in the one exception
of the root domain, taking inspiration from UNIX file system paths.
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Remove gcc warnings v2
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Move IDNA logic out of the normal domain name processing, and into the bus frontend calls. Previously whenever
comparing two domain names we'd implicitly do IDNA conversion so that "pöttering.de" and "xn--pttering-n4a.de" would be
considered equal. This is problematic not only for DNSSEC, but actually also against he IDNA specs.
Moreover it creates problems when encoding DNS-SD services in classic DNS. There, the specification suggests using
UTF8 encoding for the actual service name, but apply IDNA encoding to the domain suffix.
With this change IDNA conversion is done only:
- When the user passes a non-ASCII hostname when resolving a host name using ResolveHostname()
- When the user passes a non-ASCII domain suffix when resolving a service using ResolveService()
No IDNA encoding is done anymore:
- When the user does raw ResolveRecord() RR resolving
- On the service part of a DNS-SD service name
Previously, IDNA encoding was done when serializing names into packets, at a point where information whether something
is a label that needs IDNA encoding or not was not available, but at a point whether it was known whether to generate a
classic DNS packet (where IDNA applies), or an mDNS/LLMNR packet (where IDNA does not apply, and UTF8 is used instead
for all host names). With this change each DnsQuery object will now maintain two copies of the DnsQuestion to ask: one
encoded in IDNA for use with classic DNS, and one encoded in UTF8 for use with LLMNR and MulticastDNS.
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equivalent
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This is not particularly intrusive because it happens in simple
utility functions. It helps gcc understand that error codes
are negative.
This gets a rid of most of the remaining warnings.
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empty non-terminals generally lack NSEC RRs, which means we can deduce their existance only from the fact that there
are other RRs that contain them in their suffix. Specifically, the NSEC proof for NODATA on ENTs works by sending the
NSEC whose next name is a suffix of the queried name to the client. Use this information properly.
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source and zone in each RR
Having this information available is useful when we need to check whether various RRs are suitable for proofs. This
information is stored in the RRs as number of labels to skip from the beginning of the owner name to reach the
synthesizing source/signer. Simple accessor calls are then added to retrieve the signer/source from the RR using this
information.
This also moves validation of a a number of RRSIG parameters into a new call dnssec_rrsig_prepare() that as side-effect
initializes the two numeric values.
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Fourteenth DNSSEC PR
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When a unit was started with "systemctl --user" and it failed, error
messages is printed as "systemctl status". But it should be "systemctl
--user status".
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Compare errno with zero in a way that tells gcc that
(if the condition is true) errno is positive.
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We frequently unescape DNS label follwed by IDNA undoing. We now have a function that does that in one step, hence use
it everywhere.
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This way we become compatible with DNS names with embedded NUL bytes.
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skip first label
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ascii_strcasecmp_n()
This makes our code compatible with embedded NUL bytes, as we don't care about NUL bytes anymore.
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dns_name_startswith() is to dns_name_endswith() as startswith() is to endswith().
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Also add a coccinelle receipt to help with such transitions.
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This also introduces a new macro siphash24_compress_byte() which is useful to add a single byte into the hash stream,
and ports one user over to it.
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in labels
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Twelfth DNSSEC PR
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Fstab gen fix device timeout
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This adds a DNSSEC= setting to .network files, and makes resolved honour
them.
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networkd previously knew an enum "ResolveSupport" for configuring
per-interface LLMNR support, resolved had a similar enum just called
"Support", with the same value and similar pasers.
Unify this, call the enum ResolveSupport, and port both daemons to it.
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Previously, we'd not allow control characters to be embedded in domain
names, even when escaped. Since cloudflare uses \000 however to
implement its synthethic minimally covering NSEC RRs, we should allow
them, as long as they are properly escaped.
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All our other domain name handling functions make no destinction between
domain names that end in a dot plus a NUL, or those just ending in a
NUL. Make sure dns_name_compare_func() and dns_label_unescape_suffix()
do the same.
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Be stricter when searching suitable NSEC3 RRs for proof: generalize the
check we use to find suitable NSEC3 RRs, in nsec3_is_good(), and add
additional checks, such as checking whether all NSEC3 RRs use the same
parameters, have the same suffix and so on.
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Note that this is still not complete, one additional step is still
missing: when we verified that a wildcard RRset is properly signed, we
still need to do an NSEC/NSEC3 proof that no more specific RRset exists.
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Journal decompression fixes
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parse_field() checks if the field has the expected format, and returns
0 if it doesn't. In that case, value and size are not
set. Nevertheless, we would try to continue, and hit an assert in
safe_atou64. This case shouldn't happen, unless sd_j_get_data is borked,
so cleanly assert that we got the expected field.
Also, oom is the only way that parse_field can fail, which we log
already. Instead of outputting a debug statement and carrying on,
treat oom as fatal.
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JobTimeoutSec
There was no need for such conversion and it was actually wrong since
any device timeout less than a second was converted into 0 which means
waits forever.
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