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EDSP had a WriteSolution method to write out the entire solution based
on the inspection of a given pkgDepCache, but that is rather inflexible
both for EDSP itself and for other EDSP like-protocols. It seems better
to use a smaller scope in printing just a single stanza based on a given
version as there is more reuse potential.
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Currently an EDSP solver gets send basically all versions which means
the absolute count is the same, but that might not be true forever (and
with the skipping of rc-only versions it kinda is already) and even if
it were true, segfaulting on bad input seems wrong.
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HTTP/1.1 hardcodes GMT (RFC 7231 §7.1.1.1) and what is good enough for the
internet must be good enough for us™ as we reuse the implementation
internally to parse (most) dates we encounter in various places like the
Release files with their Date and Valid-Until header fields.
Implementing a fully timezone aware parser just feels too hard for no
effective benefit as it would take 5+ years (= until LTS's are out of
fashion) until a repository could use non-UTC dates and expect it to
work. Not counting non-apt implementations which might or might not
only want to encounter UTC here as well.
As a bonus, this eliminates the use of an instance of setlocale in
libapt.
Closes: 819697
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Setting the C++ locale via std::locale::global(std::locale("")); which
would otherwise default to the default C locale (aka: unaffected by
setlocale) effects the formatting of numeric types in IO streams, which
for output for humans is perfectly sensible, but breaks our many text
interfaces used and parsed by us and others without expecting the
numbers to be formatted.
Closes: #825396
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libapt allows to configure compressors to be used by its system via
configuration implemented in 03bef78461c6f443187b60799402624326843396,
but that was never really documented and also only partly working, which
also explains why the tests weren't using it…
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Reported-By: lintian: spelling-error-in-binary
Git-Dch: Ignore
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No real code change, just moving code around heavily to decouple the
EDSP specific parts from those we can reuse for EDSP-like protocols.
Git-Dch: Ignore
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Its more space and runtime efficient to use a boolean set instead of a
CacheSet-based implementation.
Git-Dch: Ignore
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This allows to differentiate properly between 'apt-get upgrade', 'apt
upgrade' and 'apt full-upgrade'.
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apt/apt-pkg/edsp.cc: In function ‘bool EDSP::WriteLimitedScenario(pkgDepCache&, FILE*, const PackageSet&, OpProgress*)’:
apt/apt-pkg/edsp.cc:245:56: warning: cannot optimize loop, the loop counter may overflow [-Wunsafe-loop-optimizations]
std::string dependencies[pkgCache::Dep::Enhances + 1];
^
Using a std::array to silence gcc as well as as a code improvement feels right here.
Git-Dch: Ignore
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The &= introduced in the EDSP-FileFd conversion isn't working to full
satisfaction for multiple && clauses as the && has a higher binding than
&= has, so that the methods were called even through they shouldn't
have because of previous errors. Using variadic functions we can solve
this in a slightly cleaner way bringing down the amount of 'broken pipe'
errors for the error case of the dump resolver substantially.
Git-Dch: Ignore
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I doubt there is any non-src:apt usage of these interfaces.
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The report mentions "apt list --upgradable", but there are others which
have inconsistent behavior ranging from segfaulting to doing something
with the partial (and hence incomplete) data. We had a recent report
about sources.list (#818628), this one mentions prefences, the obvious
next step is conf files… so the testcase is adapted to check for all
three in file and directory versions and run a bunch of commands each
time which should all have more or less the same behavior in such a case
(aka error out).
Closes: 824503
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This fixes comparisons where either the stored or the input string
have a trailing comma.
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This hopefully makes debugging things easier.
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Unexpected are for examples removal requests for versions which aren't
installed, installations of already installed versions & requests to
install and remove a package at the same time.
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The spec was slightly inconsistent if the preferences setting is
available only as generic or specific setting & the code only supported
the specific one, while for the strict-pinning was only generic…
As the usual pattern for apt is to have both options we adapt the spec
and code to support both as well.
This also adds a purely informal "Solver" field so in case the request
is saved in a file, we know to which solver the sent preferences apply.
Closes: 823918
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Failures can happen and APT regardless will do a partial cache
update anyway. Because APT ensures that the list directory is
in a sane state, it makes sense to also call success hooks if
success was only partial - otherwise it loses sync with APT.
Most importantly, this causes the appstream cache to be empty,
see launchpad bug #1562733.
This is somewhat overly optimistic though: As soon as any repository
has nonexisting optional files, the missing optional files are also
treated as success, which means a single broken repository without an
InRelease file still runs Success hooks, even though it really should
not.
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This prevented some sources.list entries from working, an example
of which can be found in the test.
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Improve GetLocalitySortedVersionSet, speeds up apt search by 30%
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Versions which are only available in dpkg/status aren't installable and
apt doesn't pick them as candidate for this reason – for the same reason
such packages shouldn't be sent to an external solver via EDSP. The
packages are pinned to -1, but if the solver has strict pinning disabled
it could end up picking this version anyhow – which is a request apt can
not satisfy.
Reported-By: Maximiliano Curia <maxy@debian.org> on IRC
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A frontend like apt-file is only interested in a specific set of files
and selects those easily via "Created-By". If it supports two locations
for those files through it would need to select both and a user would
need to know that implementation detail for sources.list configuration.
The "Identifier" field is hence introduced which by default has the same
value as "Created-By", but can be freely configured – especially it can
be used to give two indexes the same identifier.
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Sometimes index files are in different locations in a repository as it
is currently the case for Contents files which are per-component in
Debian, but aren't in Ubuntu. This has historic reasons and is perhaps
changed soon, but such cases of transitions can always happen in the
future again, so we should prepare:
Introduced is a new field declaring that the current item should only be
downloaded if the mentioned item wasn't allowing for transitions without
a flagday in clients and archives.
This isn't implemented 'simpler' with multiple MetaKeys as items (could)
change their descriptions and perhaps also other configuration bits with
their location.
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It looks a bit strange on the outside to have multiple "native
architecture", but all is considered an implementation detail and e.g.
packages of arch:all are in dependency resolution equal to native
packages.
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We don't have to initialize the Release files with a set of IndexTargets
to acquire, but instead wait for the Release file to be acquired and
only then ask which IndexTargets to get.
Git-Dch: Ignore
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Progress reporting used an "upper bound" on files we might get, expect
that this wasn't correct in case pdiff entered the picture. So instead
of calculating a value which is perhaps incorrect, we just accept that
we can't tell how many files we are going to download and just keep at
0% until we know. Additionally, if we have pdiffs we wait until we got
these (sub)index files, too.
That could all be done better by downloading all Release files first and
planing with them in hand accordingly, but one step at a time.
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The code naturally evolved from a TransactionManager optional to a
required setup which resulted in various places doing unneeded checks
suggesting a more complicated setup than is actually needed.
Git-Dch: Ignore
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Commit 9b8034a9fd40b4d05075fda719e61f6eb4c45678 just deals with
InRelease properly and generates broken URIs in case the mirror (or the
achieve really) has no InRelease file.
[As this was in no released version no need to clutter changelog with a
fix notice.]
Git-Dch: Ignore
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Broken in a4b8112b19763cbd2c12b81d55bc7d43a591d610.
If an item has a description which includes no space and is redirected
to another mirror the code which wants to rewrite the description
expects a space in there, but can't find it and the unguarded substr
command on the string will fail with an exception thrown…
Guarding it properly and everything is fine.
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dpkg can optionally colorize its output since 1.18.5. Currently this
defaults to 'never', but it will eventually be 'auto'. It seems
reasonable to assume that a user who has enabled/disabled colors in apt
will want to have dpkg have the same state regarding color usage.
This isn't overriding explicit settings by the user, so in case a user
feels strongly about it one way or the other there are options.
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The actual reason for this commit isn't the limit – there isn't much
point in using that much nesting – its in shutting up gcc mostly:
apt/apt-pkg/contrib/configuration.cc: In function ‘bool ReadConfigFile(Configuration&, const string&, const bool&, const unsigned int&)’:
apt/apt-pkg/contrib/configuration.cc:686:20: warning: cannot optimize loop, the loop counter may overflow [-Wunsafe-loop-optimizations]
string Stack[100];
^
by replacing this with C++s handy std::stack container (adapter).
Also cleans some whitespace noise from the file in the process.
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Users have the option since apt >= 1.1 to enforce that a Release file is
signed with specific key(s) either via keyring filename or fingerprints.
This commit adds an entry with the same name and value (except that it
doesn't accept filenames for obvious reasons) to the Release file so
that the repository owner can set a default value for this setting
effecting the *next* Release file, not the current one, which provides a
functionality similar "HTTP Public Key Pinning". The pinning is in
effect as long as the (then old) Release file is considered valid, but
it is also ignored if the Release file has no Valid-Until at all.
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A keyring file can include multiple keys, so its only fair for
transitions and such to support multiple fingerprints as well.
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Daniel Kahn Gillmor highlights in the bugreport that security isn't
improving by having the user import additional keys – especially as
importing keys securely is hard.
The bugreport was initially about dropping the warning to a notice, but
in given the previously mentioned observation and the fact that we
weren't printing a warning (or a notice) for expired or revoked keys
providing a signature we drop it completely as the code to display a
message if this was the only key is in another path – and is considered
critical.
Closes: 618445
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This basically introduces ~33 flags in the output, but a package can
have only ~11 of them displayed at the same time. There is quiet a bit
of duplication also (an uninstalled package is by definition a
newinstall if its getting installed), but as this is debug output we are
better of showing them all in case one of them isn't set in a way it is
supposed to be set.
Git-Dch: Ignore
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Redesign of multivalue options in 463c8d801595ce5ac94d7c032264820be7434232
caused the parser to look for <multivalue>{Add,Remove} (no hyphen)
instead of the expected <multivalue>-{Add,Remove}.
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The old prettyprinters have only access to the struct they pretty print,
which isn't enough usually as we want to know for a package also a bit
of state information like which version is the candidate.
We therefore need to pull the DepCache into context and hence use a
temporary struct which is printed instead of the iterator itself.
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This method does not return the 'current' candidate of the DepCache
which would be most expected, but instead returns the version which
would be candidate in a default-only policy setting – aka ignoring
apt_preferences settings and co.
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Using Pkg.CandVersion() here is wrong as its implementation will return
a candidate based just on the default policy settings ignoring user
preferences and otherwise set candidates (aka: it sidesteps the
pkgDepCache).
This causes M-A:same libraries to be detected as screwed even through
they aren't, so that they end up being kept back.
Reported-By: Felipe Sateler on IRC
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If the file is in a failed state there is no point in trying to flush
out the buffers as the file is to be discarded anyhow & its likely all
this flushing is producing is additional error messages.
Git-Dch: Ignore
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Gbp-Dch: ignore
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Bye bye old friend. You're in one Ubuntu LTS release for compat
testing, now we do not need you anymore.
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Broken in the previous commit (69cea1ef2cfda3c4da79fd756a8edaf2be26998e).
Adding a test and a comment to avoid future embarrassment.
Git-Dch: Ignore
Reported-By: Julian Andres Klode on IRC
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It would previously return a pin of 0, which is an invalid value, but
the intend is that versions which are only in the dpkg/status file can't
be selected for installation (= can't be a candidate) which is what a
negative pin assures.
This helps with the communication to EDSP solvers as they neither know
about the rc-state (yet) nor that they shouldn't choose this version.
Ideally they shouldn't be told about such versions at all as there is
nothing to be solved here, but we will get there eventually.
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Redirection services like httpredir.debian.org tend to use a set of
mirrors from which they pick a mirror at "random" for each requested
file, which is usually benefitial for the download of debs, but for the
index files this can quickly cause problems (aka hashsum mismatches) if
the two (or more) mirrors involved are only slightly out-of-sync.
This commit "resolves" this issue by using the mirror we ended up using
to get the (signed) Release file directly to get the index files
belonging to this Release file instead of asking the redirection
service which eliminates the risk of hitting out-of-sync mirrors.
As an obvious downside the redirection service can't serve partial
mirrors anymore for indexes and the download of indexes indexed in the
same Release file can't be done in parallel (from different mirrors).
This does not effect the download of non-index files like deb-files as
out-of-sync mirrors aren't a huge problem there, so the parallel
download outweights a potentially 404 error (also because this causes no
errenous downloads while hashsum mismatches download the entire file
before finding out that it was pointless).
The rational for this is that indexes are relative to the Release file.
If we would be talking about a HTML page including images, such a
behaviour is obvious and intended – not doing it means in the best case
a bunch of "useless" requests which will all be answered with a
redirect.
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They are the small brothers of the hashsum mismatch, so they deserve a
similar treatment even through we have for architectual reasons not a
much to display as for hashsum mismatches for now.
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Users tend to report these errors with just this error message… not very
actionable and hard to figure out if this is a temporary or 'permanent'
mirror-sync issue or even the occasional apt bug.
Showing the involved hashsums and modification times should help in
triaging these kind of bugs – and eventually we will have less of them
via by-hash.
The subheaders aren't marked for translation for now as they are
technical glibberish and probably easier to deal with if not translated.
After all, our iconic "Hash Sum mismatch" is translated at least.
These additions were proposed in #817240 by Peter Palfrader.
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