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zstd is a compression algorithm developed by facebook. At level 19,
it is about 6% worse in size than xz -6, but decompression is multiple
times faster, saving about 40% install time, especially with eatmydata
on cloud instances.
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Check that Date of Release file is not in the future
See merge request apt-team/apt!3
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By restricting the Date field to be in the past, an attacker cannot
just create a repository from the future that would be accepted as
a valid update for a repository.
This check can be disabled by Acquire::Check-Date set to false. This
will also disable Check-Valid-Until and any future date related checking,
if any - the option means: "my computers date cannot be trusted."
Modify the tests to allow repositories to be up to 10 hours in the
future, so we can keep using hours there to simulate time changes.
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The interesting takeaway here is perhaps that 'chmod +w' is effected by
the umask – obvious in hindsight of course. The usual setup helps with
hiding that applying that recursively on all directories (and files)
isn't correct. Ensuring files will not be stored with the wrong
permissions even if in strange umask contexts is trivial in comparison.
Fixing the test also highlighted that it wasn't bulletproof as apt will
automatically fix the permissions of the directories it works with, so
for this test we actually need to introduce a shortcut in the code.
Reported-By: Ubuntu autopkgtest CI
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Same reasoning as with the previous commit for http with the added
benefit of moving the hard to discover and untranslated example config
into a manpage which could be translated.
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Try establishing connections in alternating address families in
rapid intervals of 250 ms, adding more connections to the wait
list until one succeeds (RFC 8305, happy eyeballs 2).
It is important that WaitAndCheckErrors() waits until it has
a successful connection, a time out, or all connections failed
- otherwise the timing between tries might be wrong, and the
final long wait might exit early because one connection failed
without trying the others. Timing wise, this only works correctly
on Linux, as select() counts down there. But we rely on that in
some other places too, so this is not the time to fix that.
Timeouts are only reported in the final long wait - the short
inner waits are expected to time out more often, and multiple
times, we do not want to report them.
Closes: #668948
LP: #1308200
Gbp-Dch: paragraph
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This should help debugging crashes. The signal handler is a C++11
lambda, yay! Special care has been taken to only use signal handler
-safe functions inside there.
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This reduces the number of syscalls to about 140 from about
350 or so, significantly reducing security risks.
Also change prepare-release to ignore the architecture lists
in the build dependencies when generating the build-depends
package for travis.
We might want to clean up things a bit more and/or move it
somewhere else.
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We detect the effected sources by matching Release info – that has
potential by-catch of repositories which have incorrect field values,
but those are better fixed now anyhow. The bigger incorrectness is that
this message will not only be printed for the Debian services itself but
also for all mirrors not under Debian control but serving Debian like more
local/private mirrors which will not (directly) shutdown. It is likely
through that many of them will follow suite with less visible
announcements or break downright if their upstream source disappears, so
having false-positives here seems benefitial for the user in the end.
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/org has been obsoleted by /srv for many years on debian.org hosts.
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Reported-By: codespell & spellintian
Gbp-Dch: Ignore
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If we have a user sitting around we can let 'apt' ask the user for a
confirmation rather than print errors at the end and require the user to
figure out which commandline flags are needed to confirm the changes
non-interactively.
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The value of Origin, Label, Codename and co can be used in user
configuration from apts own pinning to unattended upgrades.
A repository changing this values can therefore have serious effects on
the behaviour of apt and other tools using these values.
In a first step we will generate error messages for these changes now
explaining the need for explicit confirmation and provide config options
and commandline flags to accept them.
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As requested by Henrique de Moraes Holschuh, here comes
an option to disable TLS support. If the option is set
to false, the internal TLS layer is disabled.
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Changes nothing on the program front and as the datatypes are
sufficently comparable fixes no bug either, but problems later on if we
ever change the types of those and prevent us using types which are too
large for the values we want to store waste (a tiny bit of) resources.
Gbp-Dch: Ignore
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Most of them in (old) code comments. The two instances of user visible
string changes the po files of the manpages are fixed up as well.
Gbp-Dch: Ignore
Reported-By: spellintian
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Our implementation of wildcards was rudimentary. It worked for some
common ones, but it was also broken: For example, armel matched any-armel,
but should match any-arm.
With this commit, we load the correct tables from dpkg. Supported are
both triplets and quadruplet tables (the latter introduced in dpkg 1.18.11).
There are some odd things we have to deal with in the cache filter for
historical and API reasons:
* The character "*" must be accepted as an alternative to any - in fact
it may appear anywhere in the wildcard as we also allow fnmatch() style
wildcard matching on the commandline.
* The code might get passed an arch with a minus at the end, for example
the cmdline "install apt:any-arm-" will first try to check if any-arm-
is a valid architecture. We deal with this by rejecting any wildcard
ending in a minus.
* Triplets are actually implemented by extending them to faux quadruplets
- by prepending a "base" component for the architecture tuple, and "any"
if there is a wildcard component.
Once we have constructed a wildcard, it is transformed into an fnmatch()
expression for historical reasons. In the future, we should really get a
tuple class and implement matching in a better, more explicit way.
This does for now though - it passes all the test cases and accepts all
things it should accept.
Closes: #748936
Thanks: James Clarke <jrtc27@jrtc27.com> for the initial patch
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The idea is simple: Each¹ Find*( call starts with a call check if the
given option (with the requested type) exists in the whitelist. The
whitelist is specified via our configure-index file so that we have
a better chance at keeping it current. the whitelist is loaded via a
special (undocumented for now) configuration stanza and if none is
loaded the empty whitelist will make it so that no warnings are shown.
Much needs to be done still, but that is as good a time as any to take a
snapshot of the current state and release it into the wild given that it
found some bugs already and has no practical effect on users.
¹ not all in this iteration, but many
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You can pretty much achieve the same with a local dummy package if you
want to, but libapt has an inbuilt setting for essential: "apt" which
can be overridden with this option as well – it could be helpful in
quick tests and what not so adding this alternative shouldn't really
hurt much.
We aren't going to document them much through as care must be taken in
regards to the binary caches as they aren't invalidated by config
options alone, so the effects of old settings could still be in them,
similar to the other already existing pkgCacheGen option(s).
Closes: 767891
Thanks: Anthony Towns for initial patch
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Build HTML docbook guides (untranslated) and manual pages
(including translations). Also install the examples in the
example subdirectory.
Translation of docbook guides has not been implemented yet,
but should be easy to do. The code also needs some cleanup
to automatically detect the available translations.
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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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Closes: 807413
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This should make it more obvious that CHANGEPATH is a placeholder which
apt will replace with a package specific path rather than a string
constant.
Mail-Reference: <87d1upgvaf.fsf@deep-thought.43-1.org>
Mail-Archive: https://lists.debian.org/debian-dak/2015/12/msg00005.html
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Provided is a specialized acquire item which given a version can figure
out the correct URI to try by itself and if not provides an error
message alongside with static methods to get just the URI it would try
to download if it should just be displayed or similar such.
The URI is constructed as follows:
Release files can provide an URI template in the "Changelogs" field,
otherwise we lookup a configuration item based on the "Label" or
"Origin" of the Release file to get a (hopefully known) default value
for now. This template should contain the string CHANGEPATH which is
replaced with the information about the version we want the changelog
for (e.g. main/a/apt/apt_1.1). This middleway was choosen as this path
part was consistent over the three known implementations (+1 defunct),
while the rest of the URI varies widely between them.
The benefit of this construct is that it is now easy to get changelogs
for Debian packages on Ubuntu and vice versa – even at the moment where
the Changelogs field is present nowhere. Strictly better than what
apt-get had before as it would even fail to get changelogs from
security… Now it will notice that security identifies as Origin: Debian
and pick this setting (assuming again that no Changelogs field exists).
If on the other hand security would ship its changelogs in a different
location we could set it via the Label option overruling Origin.
Closes: 687147, 739854, 784027, 787190
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Conflicts:
debian/changelog
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Git-Dch: ignore
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The configuration key Acquire::AllowInsecureRepositories controls if
apt allows loading of unsigned repositories at all.
The configuration Acquire::AllowDowngradeToInsecureRepositories
controls if a signed repository can ever become unsigned. This
should really never be needed but we provide it to avoid having
to mess around in /var/lib/apt/lists if there is a use-case for
this (which I can't think of right now).
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This debug option will display all scripts that are run
by apts RunScripts and RunScriptsWithPkgs helpers.
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Many derivatives make quiet a few simple changes to apt introducing
silly diffs just to change examples and co making it harder for
them to update apt and harder for us to merge real changes back.
First stop: doc/examples/sources.list
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The file isn't supposed to be a valid config file, but it should
show valid syntax non-the-less.
Git-Dch: Ignore
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- default to putting the Contents-* files below $(SECTION) as apt-file
expects them there - thanks Martin-Éric Racine! (Closes: #675827)
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- use the codename instead of 'stable' in the examples sources.list
as we do in the manpage and as the debian-installer does
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- replace CDROM with the proper CD-ROM in text
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- document APT::Architectures list (Closes: #612102)
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- deal with missing FSTAB_DIR when using libudev to discover cdrom
- add experimental APT::cdrom::CdromOnly option (on by default).
When this is set to false apt-cdrom will handle any removable
deivce (like a usb-stick) as a "cdrom/dvd" source
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[ David Kalnischkies ]
* apt-pkg/depcache.cc:
- add SetCandidateRelease() to set a candidate version and
the candidates of dependencies if needed to a specified
release (Closes: #572709)
* cmdline/apt-get.cc:
- if --print-uris is used don't setup downloader as we don't need
progress, lock nor the directories it would create otherwise
- show dependencies of essential packages which are going to remove
only if they cause the remove of this essential (Closes: #601961)
- keep not installed garbage packages uninstalled instead of showing
in the autoremove section and installing those (Closes: #604222)
- change pkg/release behavior to use the new SetCandidateRelease
so installing packages from experimental or backports is easier
- really do not show packages in the extra section if they were
requested on the commandline, e.g. with a modifier (Closes: #184730)
* debian/control:
- add Vcs-Browser now that loggerhead works again (Closes: #511168)
- depend on debhelper 7 to raise compat level
- depend on dpkg-dev (>= 1.15.8) to have c++ symbol mangling
* apt-pkg/contrib/fileutl.cc:
- add a RealFileExists method and check that your configuration files
are real files to avoid endless loops if not (Closes: #604401)
- ignore non-regular files in GetListOfFilesInDir (Closes: #594694)
* apt-pkg/contrib/weakptr.h:
- include stddefs.h to fix compile error (undefined NULL) with gcc-4.6
* methods/https.cc:
- fix CURLOPT_SSL_VERIFYHOST by really passing 2 to it if enabled
* deb/dpkgpm.cc:
- fix popen/fclose mismatch reported by cppcheck. Thanks to Petter
Reinholdtsen for report and patch! (Closes: #607803)
* doc/apt.conf.5.xml:
- fix multipl{y,e} spelling error reported by Jakub Wilk (Closes: #607636)
* apt-inst/contrib/extracttar.cc:
- let apt-utils work with encoded tar headers if uid/gid are large.
Thanks to Nobuhiro Hayashi for the patch! (Closes: #330162)
* apt-pkg/cacheiterator.h:
- do not segfault if cache is not build (Closes: #254770)
* doc/apt-get.8.xml:
- remove duplicated mentioning of --install-recommends
* doc/sources.list.5.xml:
- remove obsolete references to non-us (Closes: #594495)
* debian/rules:
- use -- instead of deprecated -u for dh_gencontrol
- remove shlibs.local creation and usage
- show differences in the symbol files, but never fail
* pre-build.sh:
- remove as it is not needed for a working 'bzr bd'
* debian/{apt,apt-utils}.symbols:
- ship experimental unmangled c++ symbol files
* methods/rred.cc:
- operate optional on gzip compressed pdiffs
* apt-pkg/acquire-item.cc:
- don't uncompress downloaded pdiff files before feeding it to rred
- try downloading clearsigned InRelease before trying Release.gpg
- change the internal handling of Extensions in pkgAcqIndex
- add a special uncompressed compression type to prefer those files
- download and use i18n/Index to choose which Translations to download
* cmdline/apt-key:
- don't set trustdb-name as non-root so 'list' and 'finger'
can be used without being root (Closes: #393005, #592107)
* apt-pkg/deb/deblistparser.cc:
- rewrite LoadReleaseInfo to cope with clearsigned Releasefiles
* ftparchive/writer.cc:
- add config option to search for more patterns in release command
- include Index files by default in the Release file
* methods/{gzip,bzip}.cc:
- print a good error message if FileSize() is zero
* apt-pkg/aptconfiguration.cc:
- remove the inbuilt Translation files whitelist
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- add a special uncompressed compression type to prefer those files
* methods/{gzip,bzip}.cc:
- print a good error message if FileSize() is zero
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quiet level 1 does this, but also disables other stuff we might want to
test against in a testcase
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- apply various typo fixes by Olly Betts, thanks! (Closes: #600249)
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- add info on debug::acquire::cdrom
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