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To have a chance to keep the ABI for a while we need all three to team
up. One of them missing and we might loose, so ensuring that they are
available is a very tedious but needed task once in a while.
Git-Dch: Ignore
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Selecting targets based on the Release they belong to isn't to
unrealistic. In fact, it is assumed to be the most used case so it is
made the default especially as this allows to bundle another thing we
have to be careful with: Filenames and only showing targets we have
acquired.
Closes: 752702
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We used to read the Release file for each Packages file and store the
data in the PackageFile struct even through potentially many Packages
(and Translation-*) files could use the same data. The point of the
exercise isn't the duplicated data through. Having the Release files as
first-class citizens in the Cache allows us to properly track their
state as well as allows us to use the information also for files which
aren't in the cache, but where we know to which Release file they
belong (Sources are an example for this).
This modifies the pkgCache structs, especially the PackagesFile struct
which depending on how libapt users access the data in these structs can
mean huge breakage or no visible change. As a single data point:
aptitude seems to be fine with this. Even if there is breakage it is
trivial to fix in a backportable way while avoiding breakage for
everyone would be a huge pain for us.
Note that not all PackageFile structs have a corresponding ReleaseFile.
In particular the dpkg/status file as well as *.deb files have not. As
these have only a Archive property need, the Component property takes
over this duty and the ReleaseFile remains zero. This is also the reason
why it isn't needed nor particularily recommended to change from
PackagesFile to ReleaseFile blindly. Sticking with the earlier is
usually the better option.
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Downloading additional files is only half the job. We still need a way
to allow external tools to know where the files are they requested for
download given that we don't want them to choose their own location.
'apt-get files' is our answer to this showing by default in a deb822
format information about each IndexTarget with the potential to filter
the records based on lines and an option to change the output format.
The command serves also as an example on how to get to this information
via libapt.
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Strings are easy to typo and we can keep the extensibility we require
here with a simple enum we can append to without endangering ABI.
Git-Dch: Ignore
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Removes a bunch of duplicated code in the deb-specific parts. Especially
the Description part is now handled centrally by IndexTarget instead of
being duplicated to the derivations of IndexFile.
Git-Dch: Ignore
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It is a rather strange sight that index items use SiteOnly which strips
the Path, while e.g. deb files are downloaded with NoUserPassword which
does not. Important to note here is that for the file transport Path is
pretty important as there is no Host which would be displayed by Site,
which always resulted in "interesting" unspecific errors for "file:".
Adding a 'middle' ground between the two which does show the Path but
potentially modifies it (it strips a pending / at the end if existing)
solves this "file:" issue, syncs the output and in the end helps to
identify which file is meant exactly in progress output and co as a
single site can have multiple repositories in different paths.
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We need a general way to get from a sources.list entry to IndexTargets
and with this change we can move from pkgSourceList over the list of
metaIndexes it includes to the IndexTargets each metaIndex can have.
Git-Dch: Ignore
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Creating and passing around a bunch of pointers of IndexTargets (and of
a vector of pointers of IndexTargets) is probably done to avoid the
'costly' copy of container, but we are really not in a timecritical
operation here and move semantics will help us even further in the
future. On the other hand we never do a proper cleanup of these
pointers, which is very dirty, even if structures aren't that big…
The changes will effecting many items only effect our own hidden class,
so we can do that without fearing breaking interfaces or anything.
Git-Dch: Ignore
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We still need an API for the targets, so slowly prepare the IndexTargets
to let them take this job.
Git-Dch: Ignore
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We have two places in the code which need to iterate over targets and do
certain things with it. The first one is actually creating these targets
for download and the second instance pepares certain targets for
reading.
Git-Dch: Ignore
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First pass at making the acquire system capable of downloading files
based on configuration rather than hardcoded entries. It is now possible
to instruct 'deb' and 'deb-src' sources.list lines to download more than
just Packages/Translation-* and Sources files. Details on how to do that
can be found in the included documentation file.
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Having every item having its own code to verify the file(s) it handles
is an errorprune process and easy to break, especially if items move
through various stages (download, uncompress, patching, …). With a giant
rework we centralize (most of) the verification to have a better
enforcement rate and (hopefully) less chance for bugs, but it breaks the
ABI bigtime in exchange – and as we break it anyway, it is broken even
harder.
It shouldn't effect most frontends as they don't deal with the acquire
system at all or implement their own items, but some do and will need to
be patched (might be an opportunity to use apt on-board material).
The theory is simple: Items implement methods to decide if hashes need to
be checked (in this stage) and to return the expected hashes for this
item (in this stage). The verification itself is done in worker message
passing which has the benefit that a hashsum error is now a proper error
for the acquire system rather than a Done() which is later revised to a
Failed().
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Git-Dch: Ignore
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We have a bunch of classes which are of no use for the outside world,
but were still exported and so needed to preserve ABI/API. Marking them
as hidden to not export them any longer is a big API break in theory,
but in practice nobody is using them – as if they would its a bug.
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We can't add a new virtual method without breaking the ABI, but we can
freely add new methods, so for older ABIs we just implement this method
with a dynamic_cast, so that clients can be more ignorant about the API
here and especially don't need to pull a very dirty trick by assuming
internal knowledge (like apt-get did here).
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Git-Dch: Ignore
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Do not require a special flag to be present to update trusted=yes
sources as this flag in the sources.list is obviously special enough.
Note that this is just disabling the error message, the user will still
be warned about all the (possible) failures the repository generated, it
is just triggering the acceptance of the warnings on a source-by-source
level.
Similarily, the trusted=no flag doesn't require the user to pass
additional flags to update, if the repository looks fine in the view of
apt it will update just fine. The unauthenticated warnings will "just" be
presented then the data is used.
In case you wonder: Both was the behavior in previous versions, too.
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The old way of handling this was that pkgAcqMetaIndex was responsible
to check/move both Release and Release.gpg in place. This breaks
the assumption of the transaction that each pkgAcquire::Item has
a single File that its responsible for.
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Reported-By: clang++ -Werror
Conflicts:
apt-pkg/acquire-item.cc
apt-pkg/acquire-item.h
apt-pkg/deb/debmetaindex.h
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It is not very extensible to have the supported Hashes hardcoded
everywhere and especially if it is part of virtual method names.
It is also possible that a method does not support the 'best' hash
(yet), so we might end up not being able to verify a file even though we
have a common subset of supported hashes. And those are just two of the
cases in which it is handy to have a more dynamic selection.
The downside is that this is a MAJOR API break, but the HashStringList
has a string constructor for compatibility, so with a bit of luck the
few frontends playing with the acquire system directly are okay.
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debian/experimental
Conflicts:
apt-pkg/deb/debindexfile.cc
apt-pkg/deb/debindexfile.h
apt-pkg/deb/debsrcrecords.cc
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Beside being a bit cleaner it hopefully also resolves oddball problems
I have with high levels of parallel jobs.
Git-Dch: Ignore
Reported-By: iwyu (include-what-you-use)
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Default is to acquire all architectures from APT::Architectures which
can be changed by arch=, but this isn't very flexible if you want
"mostly" the default as you have to hardcode the architectures then,
so arch-= and arch+= can be used to add/remove architectures from the
default set.
On a machine with 'amd64' and 'i386' configured the lines:
deb [arch+=armel] http://example.org/debian wheezy rocks
deb [arch-=amd64] http://example.org/debian jessie rocks
will result in the download of:
wheezy Packages for 'amd64', 'i386' and 'armel'
jessie Packages for 'i386'
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into data and signatures, pass it to gpgv for verification and
recombines it after that in a known-good way without unsigned blocks
and whitespaces resulting usually in more or less the same file as
before, but later code can be sure about the format
* apt-pkg/deb/debmetaindex.cc:
- reenable InRelease by default
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- CVE-2013-1051
* apt-pkg/deb/debmetaindex.cc,
test/integration/test-bug-595691-empty-and-broken-archive-files,
test/integration/test-releasefile-verification:
- disable InRelease downloading until the verification issue is
fixed, thanks to Ansgar Burchardt for finding the flaw
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- drop support for i18n/Index file (introduced in 0.8.11) and use
the Release file instead to get the Translations (Closes: #649314)
* ftparchive/writer.cc:
- add 'Translation-*' to the default patterns
i18n/Index was never used outside debian - and even here it isn't used
consistently as only 'main' has such a file. As the Release file now
includes the Translation-* files we therefore drop support for i18n/Index.
A version supporting it was never part of a debian release and still
supporting it would mean that we get 99% of the time a 404 as response
to the request anyway and confuse archive maintainers who want to
provide all files APT tries to acquire.
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- none is a separator, not a language: no need for Index (Closes: #624218)
* apt-pkg/aptconfiguration.cc:
- do not builtin languages only if none is forced (Closes: #643787)
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- fix double delete (LP: #848907)
- ignore only the invalid regexp instead of all options
* apt-pkg/acquire-item.h, apt-pkg/deb/debmetaindex.cc:
- fix fetching language information by adding OptionalSubIndexTarget
* methods/https.cc:
- cleanup broken downloads properly
* ftparchive/cachedb.cc:
- fix buffersize in bytes2hex
* apt-pkg/deb/deblistparser.cc:
- fix crash when the dynamic mmap needs to be grown in
LoadReleaseInfo (LP: #854090)
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- fix fetching language information by adding OptionalSubIndexTarget
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done on the mirco-optimazation level, so lets fix them:
(performance) Possible inefficient checking for emptiness.
(performance) Prefer prefix ++/-- operators for non-primitive types.
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- add trusted=yes option to mark unsigned (local) repository as trusted
based on a patch from Ansgar Burchardt, thanks a lot! (Closes: #596498)
Note that "apt-get update" still warns about unknown signatures even
when [trusted=yes] is given for the source.
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- do not download TranslationIndex if no Translation-* will be
downloaded later on anyway (Closes: #624218)
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* apt-pkg/aptconfiguration.cc:
- remove the inbuilt Translation files whitelist
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* apt-pkg/deb/deblistparser.cc:
- rewrite LoadReleaseInfo to cope with clearsigned Releasefiles
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- do not query each architecture for flat file archives
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