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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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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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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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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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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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feature/acq-trans
Conflicts:
apt-pkg/acquire-item.cc
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Git-Dch: ignore
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Reworks the API involved in creating and setting up the fetcher to be a
bit more pleasent to look at and work with as e.g. an empty string for
no lock isn't very nice. With the lock we can also stop creating all our
partial directories "just in case". This way we can also be a bit more
aggressive with the partial directory itself as with a lock, we know we
will gone need it.
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The code is creating a secure temporary directory, but then creates
the changelog alongside the tmpdir in the same base directory. This
defeats the secure tmpdir creation, making the filename predictable.
Inject a '/' between the tmpdir and the changelog filename.
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This prevents a failure in mktemp -d - it will blindly trust
TMPDIR and not use something else if the dir is not there.
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Conflicts:
apt-pkg/acquire-item.cc
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Not really the intended usecase for apt-get clean, but users expect it
to help them in recovery and it can't really hurt as this directory
should be empty if everything was fine and proper anyway.
Closes: #762889
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apt-get download and changelog as well as apt-helper reuse the acquire
system for their own proposes without requiring the directories the
fetcher wants to create, which is a problem if you run them as non-root
and the directories do not exist as it greets you with:
E: Archives directory /var/cache/apt/archives/partial is missing. -
Acquire (13: Permission denied)
Closes: 762898
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Accessing the package records to acquire this information is pretty
costly, so that information wasn't used so far in many places. The most
noticeable user by far is EDSP at the moment, but there are ideas to
change that which this commit tries to enable.
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gnupg/gnupg2 can do verify just fine of course, so we don't need to use
gpgv here, but it is what we always used in the past, so there might be
scripts expecting a certain output and more importantly the output of
apt-cdrom contains messages from gpg and even with all the settings we
activate to prevent it, it still shows (in some versions) a quiet scary:
"gpg: WARNING: Using untrusted key!" message. Keeping the use of gpgv is
the simplest way to prevent it.
We are increasing also the "Breaks: apt" version from libapt as it
requires a newer apt-key than might be installed in partial upgrades.
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Git-Dch: Ignore
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Some advanced commands can be executed without the keyring being
modified like --verify, so this adds an option to disable the mergeback
and uses it for our gpg calling code.
Git-Dch: Ignore
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We were down to at most two keyrings before, but gnupg upstream plans
dropping support for multiple keyrings in the longrun, so with a
single keyring we hope to be future proof – and 'apt-key adv' isn't a
problem anymore as every change to the keys is merged back, so we have
now the same behavior as before, but support an unlimited amount of
trusted.gpg.d keyrings.
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For some advanced usecases it might be handy to specify the secret
keyring to be used (e.g. as it is used in the testcases), but specifying
it via a normal option for gnupg might not be available forever:
http://lists.gnupg.org/pipermail/gnupg-users/2013-August/047180.html
Git-Dch: Ignore
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Git-Dch: Ignore
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Git-Dch: Ignore
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If both are available APT will still prefer gpg over gpg2 as it is a bit
more lightweight, but it shouldn't be a problem to use one or the other
(at least at the moment, who knows what will happen in the future).
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'apt-key help' and incorrect usage do not need a functioning gnupg
setup, as well as we shouldn't try to setup gnupg before we actually
test if it is available (and print a message if it is not).
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gnupg has a hardlimit of 40 (at the moment) keyrings per invocation,
which can be exceeded with (many) repositories. That is rather
misfortune as the longrun goal was to drop gnupg dependency at some
point in the future, but this can now be considered missed and dropped.
It also means that 'apt-key adv' commands might not have the behaviour
one would expect it to have as it mainly operates on a big temporary
keyring, so commands modifying keys will break. Doing this was never a
good idea anyway through, so lets just hope nothing break too badly.
Closes: 733028
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Git-Dch: Ignore
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Git-Dch: Ignore
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Git-Dch: Ignore
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Git-Dch: Ignore
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The introduction of Fnmatch showed that each new selector would require
multiple new virtual methods in the CacheSetHelper to work correctly,
which isn't that great. We now flip to a single virtual method which
handles all cases separated by an enum – as new enum values can be added
without an ABI break.
Great care was taken to make old code work with the new way of organisation,
which means in return that you might be bombarded with deprecation
warnings now if you don't adapt, but code should still compile and work
as before as can be seen in apt itself with this commit.
Git-Dch: Ignore
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The comment above their definition marks them already as such, so this
is only a formalisation of the deprecation and fixes the occurances we
have in our own code together with removing a magic number.
Git-Dch: Ignore
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So far, only the few strings stored in stringitems were counted, but
many more strings are directly inserted into the cache. We account for
this now by identifying all these different strings and measure their
length. We are still not at the correct size of the cache in 'stats'
this way, but we are now again a bit closer.
Git-Dch: Ignore
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Conflicts:
apt-pkg/acquire-item.cc
configure.ac
debian/changelog
doc/apt-verbatim.ent
doc/po/apt-doc.pot
doc/po/de.po
doc/po/es.po
doc/po/fr.po
doc/po/it.po
doc/po/ja.po
doc/po/pt.po
po/ar.po
po/ast.po
po/bg.po
po/bs.po
po/ca.po
po/cs.po
po/cy.po
po/da.po
po/de.po
po/dz.po
po/el.po
po/es.po
po/eu.po
po/fi.po
po/fr.po
po/gl.po
po/hu.po
po/it.po
po/ja.po
po/km.po
po/ko.po
po/ku.po
po/lt.po
po/mr.po
po/nb.po
po/ne.po
po/nl.po
po/nn.po
po/pl.po
po/pt.po
po/pt_BR.po
po/ro.po
po/ru.po
po/sk.po
po/sl.po
po/sv.po
po/th.po
po/tl.po
po/tr.po
po/uk.po
po/vi.po
po/zh_CN.po
po/zh_TW.po
test/integration/test-ubuntu-bug-346386-apt-get-update-paywall
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When apt-cache search with many args (> 130) is given the allocation
of PatternMatch on the stack may fail resulting in a segmentation
fault. By using the heap the max size is much bigger and we also
get a bad_alloc expection instead of a segfault (which we can catch
*if* this ever becomes a pratical problem). No test for the crash
as its not reproducable with the MALLOC_ settings in framework.
Closes: 759612
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When doing Acquire::http{,s}::Proxy-Auto-Detect, run the auto-detect
command for each host instead of only once. This should make using
"proxy" from libproxy-tools feasible which can then be used for PAC
style or other proxy configurations.
Closes: #759264
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dpkg-source can be told to enforce signature checks with
--require-valid-signature, but while this isn't feasible as default for
Debian itself at the moment, a local admin should be able to use it.
This commit also fixes the size limit on the construction of the command
being called for dpkg-source and dpkg-buildpackage.
Closes: 757534
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This avoid the subtle problem that someone might have a directory
with the same package name as the build-depends he/she is trying
to fetch. Also print a note that the specific file/dir is used.
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This is an ABI break.
Closes: #742882
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It still doesn't reflect the size the cache has on the disk compared to
what is given as total size (90 vs 103 MB), but by counting all structs
in we are at least a bit closer to the reality.
Git-Dch: ignore
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We had a wild mixture of (unsigned) int, long and long long here without
much sense, so this commit adds a few typedefs to get some sense in the
typesystem and ensures that a ID isn't sometimes computed as int, stored
as long and compared with a long long… as this could potentially bite us
later on as the size of the archive only increases over time.
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Conflicts:
apt-private/private-install.cc
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Conflicts:
apt-pkg/contrib/fileutl.cc
apt-pkg/contrib/fileutl.h
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Conflicts:
apt-pkg/acquire-item.cc
apt-pkg/acquire-item.h
apt-pkg/deb/debmetaindex.h
apt-pkg/pkgcache.cc
test/integration/test-apt-ftparchive-src-cachedb
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