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debian/experimental
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feature/no-more-acquire-guessing
Conflicts:
apt-pkg/acquire-item.cc
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Conflicts:
debian/changelog
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Translation-* is guessed
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suffix" instead of -s for compatibility with older systems
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The pkgAcquire::Run() code works uses a while(ToFetch > 0) loop
over the items queued for fetching. This means that we need to
Deqeueue the item if we call AbortTransaction() to avoid a hang.
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Handle Translation-* files exactly like Packages files (with the
expection that it is ok if a download of them fails). Remove all
"guessing" on apts side. This will elimimnate a bunch of errors
releated to captive portals and similar. Its also more correct
and removes another potential attack vector.
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The worker is the part closest to the methods, which will call the item
methods according to what it gets back from the methods, it is therefore
a better place to change permissions as it is very central and can do it
now at the point the item is assigned to a method rather than then it is
queued for download (and as before while dequeued via Done/Failure).
Git-Dch: Ignore
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Git-Dch: Ignore
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Central methods of our infrastructure like this one responsible for
communication with our methods shouldn't be more complicated then they
have to and not claim to have (albeit unlikely) bugs.
While I am not sure about having improved the first part, the bug is now
gone and a few explicit tests check that it stays that way, so nobody
will notice the difference (hopefully) – expect that this should a very
tiny bit faster as well as we don't manually proceed through the string.
Git-Dch: Ignore
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It is a very simple hashstring, which is why it isn't contributing to
the usability of a list of them, but it is also trivial to check and
calculate, so it doesn't hurt checking it either as it can combined even
with the simplest other hashes greatly complicate attacks on them as you
suddenly need a same-size hash collision, which is usually a lot harder
to achieve.
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Git-Dch: ignore
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Instead of hardcoding Dpkg::MaxArgBytes find out about it using
the sysconf(_SC_ARG_MAX) call.
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It is sometimes handy to have an installed package also in the archive,
but this was until now harder than it should as you had to duplicate the
lines, which is especially dangerous while writing the tests as it
easily happens that these two lines divert and so the same-but-different
version detection kicks in.
Git-Dch: Ignore
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We can use either and some tests exercise this, but the default should
be what we want to use and that is a split out long description file
which is properly mentioned in the Release file.
Git-Dch: Ignore
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Git-Dch: Ignore
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partial files are chowned by the Item baseclass to let the methods work
with them. Now, this baseclass is also responsible for chowning the
files back to root instead of having various deeper levels do this.
The consequence is that all overloaded Failed() methods now call the
Item::Failed base as their first step. The same is done for Done().
The effect is that even in partial files usually don't belong to
_apt anymore, helping sneakernets and reducing possibilities of a bad
method modifying files not belonging to them.
The change is supported by the framework not only supporting being run
as root, but with proper permission management, too, so that privilege
dropping can be tested with them.
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Git-Dch: ignore
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Git-Dch: Ignore
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Ensure in SetupAPTPartialDirectory() that the /etc/apt/auth.conf file
can be read by the priv sep apt methods.
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If the methods drop privileges we need to ensure that
/etc/apt/apt.conf is still readable by the _apt user.
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Private temporary directories as created by e.g. libpam-tmpdir are nice,
but they are also very effective in preventing our priviledge dropping
to work as TMPDIR will be set to a directory only root has access to, so
working with it as _apt will fail. We circumvent this by extending our
check for a usable TMPDIR setting by checking access rights.
Closes: 765951
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Adds a new testwarning which tests for zero exit and the presents of a
warning in the output, failing if either is not the case or if an error
is found, too. This allows us to change testsuccess to accept only
totally successful executions (= without warnings) which should help
finding regressions.
Git-Dch: Ignore
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These functions check the exit code of the command, but for apt commands
we can go further and require an error message for non-zero exits and
none for zero exits.
Git-Dch: Ignore
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Git-Dch: Ignore
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Git-Dch: Ignore
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Adds some infrastructure to run tests automatically for certain
commands. The first command being 'apt-get update' (and 'apt update')
which check for correct permission and owner of the files in lists/.
Git-Dch: Ignore
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If we get an IMS hit for an InRelease file we use the file we already
have and pass it into reverification, but this changes the permissions
and on abort of the transaction they weren't switched back.
This is now done, additionally, every file in partial which hasn't
failed gets permission and owner changed for root access as well, as it
is very well possible that the next invocation will (re)use these files.
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Transactions are run and completed from multiple places, so it happens
for unsigned repos that the Release file was commited even if it was
previously aborted (due to --no-allow-insecure-repositories). The reason
is simply that the "failure" of getting an InRelease/Release.gpg is
currently ignored, so that the acquire process believes that nothing bad
happened and commits the transaction even though the same transaction
was previously aborted.
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Refactors a bit to ensure the same message is used in all three cases as
well.
Git-Dch: Ignore
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The conversion to accept only relevant options for commands has
forgotten another one, so adding it again even through the usecase might
very well be equally good served by --print-uris.
Closes: 742578
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We do not support compressed indexes for cdrom sources as we rewrite
some of them, so supporting it correctly could be hard. What we do
instead in the meantime is probably disabling it for cdrom sources.
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The acquire code changed completely, so this is more an import of the
testcase and a new fix than the merge of an existent fix.
Conflicts:
apt-pkg/acquire-item.cc
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Regression from merging 801745284905e7962aa77a9f37a6b4e7fcdc19d0 and
b0f4b486e6850c5f98520ccf19da71d0ed748ae4. While fine by itself, merged
the part fixing the filename is skipped if a cdrom source is
encountered, so that our list-cleanup removes what seems to be orphaned
files.
Closes: 765458
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We are checking the space requirements for ages, but the check uses the
free blocks count, which includes the blocks reserved for usage by root.
Now that we use an unprivileged user it has no access to these blocks
anymore – and more importantly these blocks are a reserve, they
shouldn't be used by apt without special encouragement by the user as it
would be bad to have dpkg run out of diskspace and maintainerscripts
like man-db skip certain actions if not enough space is available
freely.
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Similar to 8f45798d532223adc378a4ad9ecfc64b3be26e4f, there is no harm to
set this, even if we don't drop privileges.
Git-Dch: Ignore
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Running the testcases is usually not a good idea, but it can be handy to
check if the privilege dropping works.
Git-Dch: Ignore
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Privilege dropping breaks download/source/changelog commands as they
require the _apt user to have write permissions in the current directory,
which is e.g. the case in /tmp, but not in /root, so we disable the
privilege dropping if we deal with such a directory based on idea and
code by Michael Vogt.
The alternative would be to download always to a temp directory and move
it then done, but this breaks partial file support. To resolve this, we
could move to one of our partial/ directories, but this would require a
lock which would block root from using two of these commands in
parallel. As both seems unacceptable we instead let the user choose what
to do: Either a directory is setupped for _apt, downloading as root is
accepted or – which is potentially even better – an unprivileged user is
used for the commands.
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Add a new configallowinsecurerepositories that controls the value
of Acquire::AllowInsecureRepositories for the tests. Set it to
"false" for most of the testsuite and only enable it where its
really needed. We want to switch the default for this post-jessie.
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This change is made for backward compatiblity and should be reverted
once jessie is out.
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Git-Dch: Ignore
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