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[jak@debian.org: This merges the state of 1.3_rc3]
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I actually tried to amend the previous commit, but apparently
I forgot to add the file mode change.
Gbp-Dch: ignore
(cherry picked from commit 832f95f4d018f18ff7b3d0381206f25b5a4373a6)
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If a Binary field contains one or more spaces before a comma, the
code produced a segmentation fault, as it accidentally set a pointer
to 0 instead of the value of the pointer.
If the comma is at the beginning of the field, the code would
create a binStartNext that points one element before the start
of the string, which is undefined behavior.
We also need to check that we do not exit the string during the
replacement of spaces before commas: A string of the form " ,"
would normally exit the boundary of the Buffer:
binStartNext = offset 1 ','
binEnd = offset 0 ' '
isspace_ascii(*binEnd) = true => --binEnd
=> binEnd = - 1
We get rid of the problem by only allowing spaces to be eliminated
if they are not the first character of the buffer:
binStartNext = offset 1 ','
binEnd = offset 0 ' '
binEnd > buffer = false, isspace_ascii(*binEnd) = true
=> exit loop
=> binEnd remains 0
(cherry picked from commit ce6cd75dc367b92f65e4fb539dd166d0f3361f8c)
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An absolute filename for a *.deb file starts with a /. A package with
the name of the file is inserted in the cache which is provided by the
"real" package for internal reasons. The pinning code detects a regex
based wildcard by having the regex start with /. That is no problem
as a / can not be included in a package name… expect that our virtual
filename package can and does.
We fix this two ways actually: First, a regex is only being considered a
regex if it also ends with / (we don't support flags). That stops our
problem with the virtual filename packages already, but to be sure we
also do not enter the loop if matcher and package name are equal.
It has to be noted that the creation of pins for virtual packages like
the here effected filename packages is pointless as only versions can be
pinned, but checking that a package is really purely virtual is too
costly compared to just creating an unused pin.
Closes: 835818
(cherry picked from commit e950b7e2f89b5e48192cd469c963a44fff9f1450)
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This fixes issues with chroots, but the goal here was to get
the test suite working on systems without dpkg.
(cherry picked from commit 2ed62ba6abcad809d1898a40950f86217af73812)
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In the old days, apt-inst used to use binaries, but now it
uses the built-in support and matches using Name, and not a
Binary.
(cherry picked from commit 8a362893a18eca569f8b93c572aaf966572b9546)
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I probably missed that when I did the usability work. But better
late than never.
(cherry picked from commit 75d238ba66576c04f257e9d7c0a6995721f1441d)
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We basically called ourselves before, creating an endless loop.
Reported-By: clang
(cherry picked from commit d651c4cd71a43c385c3d3bcd3a9f25bf0a67f8f2)
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Instead of erroring out when receiving a SIGINT, let the
child deal with it - we'll error out anyway if the child
exits with an error or due to the signal. Also ignore
SIGQUIT, as system() ignores it.
This basically fixes Bug #832593, but: we are running
the hooks via sh -c. Some shells exit with a signal
error even if the command they are executing catches
the signal and exits successfully. So far, this has
been noticed on dash, which unfortunately, is our
default shell.
Example:
$ cat trap.sh
trap 'echo int' INT; sleep 10; exit 0
$ if dash -c ./trap.sh; then echo OK: $?; else echo FAIL: $?; fi
^Cint
FAIL: 130
$ if mksh -c ./trap.sh; then echo OK: $?; else echo FAIL: $?; fi
^Cint
OK: 0
$ if bash -c ./trap.sh; then echo OK: $?; else echo FAIL: $?; fi
^Cint
OK: 0
(cherry picked from commit a6ae3d3df490e7a5a1c8324ba9dc2e63972b1529)
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In af81ab9030229b4ce6cbe28f0f0831d4896fda01 we implement by-hash as a
special compression type, which breaks this filesize setting as the code
is looking for a foobar.by-hash file then. Dealing this slightly gets
us the intended value. Note that this has no direct effect as this value
will be set in other ways, too, and could only effect progress reporting.
Gbp-Dch: Ignore
(cherry picked from commit 3084ef2292642d43e533654354a4929abe55d91b)
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If a server closes a connection after sending us a file that tends to
mean that its a type of server who always closes the connection – it is
therefore relatively pointless to try pipelining with it even if it
isn't a problem by itself: apt is just restarting the pipeline each
time after it got served one file and the connection is closed.
The problem starts if one or more proxies are between the server and apt
and they disagree about how the connection should be as in the
bugreporters case where the responses apt gets contain both Keep-Alive
and Proxy-Connection headers (which apt both ignores) indicating a
proxy is trying to keep a connection open while the response also
contains "Connection: close" indicating the opposite which apt
understands and respects as it is required to do.
We avoid stepping into this abyss by not performing pipelining anymore
if we got a respond with the indication to close connection if the
response was otherwise a success – error messages are sent by some
servers via this method as their pages tend to be created dynamically
and hence their size isn't known a priori to them.
Closes: #832113
(cherry picked from commit 9714d522056e5256f5a2de587d88eba7cb3291c2)
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It seems completely pointless from a server-POV to sent empty header
fields, so most of them don't do it (simply proven by this limitation
existing since day one) – but it is technically allowed by the RFC as
the surounding whitespaces are optional and Github seems to like sending
"X-Geo-Block-List:\r\n" since recently (bug reports in other http
clients indicate July) at least sometimes as the reporter claims to have
seen it on https only even through it can happen with both.
Closes: 834048
(cherry picked from commit 148c049150cc39f2e40894c1684dc2aefea1117e)
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Since its existence in 2010 DirectoryExists was always marked with this
attribute, but for no real reason. Arguably a check for the existence of
the file is not modifying global state, so theoretically this shouldn't
be a problem. It is wrong from a logical point of view through as
between two calls the directory could be created so the promise we made
to the compiler that it could remove the second call would be wrong, so
API wise it is wrong.
It's a bit mysterious that this is only observeable on ppc64el and can be
fixed by reordering code ever so slightly, but in the end its more our
fault for adding this attribute than the compilers fault for doing
something silly based on the attribute.
LP: 1473674
(cherry picked from commit 9445fa62386c80c9822e77484d30b2109aa0f2dc)
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When checking if a file is empty, we forget to check that
fstat() actually worked.
(cherry picked from commit 15fe8e62d37bc87114c59d385bed7ceefb72886b)
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If the URI had no password the username was ignored
(cherry picked from commit a1f3ac8aba0675321dd46d074af8abcbb10c19fd)
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APT (usually) knows which package is essential or not, so we can avoid
passing this force flag to dpkg unconditionally if the user hasn't
chosen a non-default essential handling obscuring the information.
(cherry picked from commit d3930f8716f439c229cd3d11813823d847a2ecff)
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Previously, when data could be created and sig not, we would unlink
sig, not data (and vice versa).
(cherry picked from commit d0d06f44ed60a3888528d834a799bae86c2978d5)
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There is no point in trying to perform Write/Read on a FileFd which
already failed as they aren't going to work as expected, so we should
make sure that they fail early on and hard.
(cherry picked from commit 02c38073af51802c02bb104d4450e0e112d641ad)
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Reported-By: cppcheck
Gbp-Dch: Ignore
(cherry picked from commit 196d590a99e309764e07c9dc23ea98897eebf53a)
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If another file in the transaction fails and hence dooms the transaction
we can end in a situation in which a -patched file (= rred writes the
result of the patching to it) remains in the partial/ directory.
The next apt call will perform the rred patching again and write its
result again to the -patched file, but instead of starting with an empty
file as intended it will override the content previously in the file
which has the same result if the new content happens to be longer than
the old content, but if it isn't parts of the old content remain in the
file which will pass verification as the new content written to it
matches the hashes and if the entire transaction passes the file will be
moved the lists/ directory where it might or might not trigger errors
depending on if the old content which remained forms a valid file
together with the new content.
This has no real security implications as no untrusted data is involved:
The old content consists of a base file which passed verification and a
bunch of patches which all passed multiple verifications as well, so the
old content isn't controllable by an attacker and the new one isn't
either (as the new content alone passes verification). So the best an
attacker can do is letting the user run into the same issue as in the
report.
Closes: #831762
(cherry picked from commit 0e071dfe205ad21d8b929b4bb8164b008dc7c474)
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Also fixes message itself to mention the correct option name as noticed
in #832113.
(cherry picked from commit b9c20219dc17db1d29eaf297263a4b008bd1b90b)
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We read the entire input file we want to patch anyhow, so we can also
calculate the hash for that file and compare it with what he had
expected it to be.
Note that this isn't really a security improvement as a) the file we
patch is trusted & b) if the input is incorrect, the result will hardly be
matching, so this is just for failing slightly earlier with a more
relevant error message (althrough, in terms of rred its ignored and
complete download attempt instead).
(cherry picked from commit 6e71ec6fcdcaa926c98fa58cd4af38e42556df15)
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The flush call is a no-op in most FileFd implementations so this isn't
as critical as it might sound as the only non-trivial implementation is
in the buffered writer, which tends not be used to buffer another
buffer…
(cherry picked from commit 8ca481e8419c19b6ef9074b68cc028177a507161)
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Closes: 832039
(cherry picked from commit a913e64ead6ada2adae6fb5f35212187ad5acd01)
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Escape "+" in kernel package names when generating APT::NeverAutoRemove
list so it is not treated as a regular expression meta-character.
[Changed by David Kalnischkies: let test actually test the change]
Closes: #830159
(cherry picked from commit 130176bcb6ce65c98d5692196c55cc18b4c210e0)
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Instead of only trying the first host we get via SRV, we try them all as
we are supposed to and if that isn't working we try to connect to the
host itself as if we hadn't seen any SRV records. This was already the
intend of the old code, but it failed to hide earlier problems for the
next call, which would unconditionally fail then resulting in an all
around failure to connect. With proper stacking we can also keep the
error messages of each call around (and in the order tried) so if the
entire connection fails we can report all the things we have tried while
we discard the entire stack if something works out in the end.
(cherry picked from commit 3af3ac2f5ec007badeded46a94be2bd06b9917a2)
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If we don't give a specific error to report up it is likely that all
error currently in the error stack are equally important, so reporting
just one could turn out to be confusing e.g. if name resolution failed
in a SRV record list.
(cherry picked from commit b50dfa6b2dd2d459e0c2746ac9367982b96ffac0)
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If we have files in partial/ from a previous invocation or similar such
those could be symlinks created by file:// sources. The code is
expecting only real files through and happily changes owner,
modification times and permission on the file the symlink points to
which tend to be files we have no business in touching in this way.
Permissions of symlinks shouldn't be changed, changing owner is usually
pointless to, but just to be sure we pick the easy way out and use
lchown, check for symlinks before chmod/utimes.
Reported-By: Mattia Rizzolo on IRC
(cherry picked from commit 3465138575e1fd0d5892d9b6be1ae232eb873460)
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The generated dump output is incorrect in sofar as it uses the name as
the key for this compressor, but they don't need to be equal as is the
case if you force some of the inbuilt ones to be disabled as our testing
framework does it at times.
This is hidden from changelog as nobody will actually notice while
describing it in a few words make it sound like an important change…
Git-Dch: Ignore
(cherry picked from commit 52bafeade99b700eeb4585608c5eee086b94dfa8)
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methods/http.cc:640:13: runtime error: reference binding to null pointer
of type 'struct FileFd'
This reference is never used in the cases it has a nullptr, so the
practical difference is non-existent, but its a bug still.
Reported-By: gcc -fsanitize=undefined
(cherry picked from commit 4460551841d909d3ee9c1de00156ed3cdf8b1665)
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Gbp-Dch: ignore
(cherry picked from commit 2a90aa7a064047fb1c8783b31720cd345018ca4a)
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This caused a crash because the cache was a nullptr.
Closes: #829651
(cherry picked from commit 8823972649b0d3049c9c0d34b5f1d31160234fb4)
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As the volatile sources are parsed last they were sorted behind the
dpkg/status file and hence are treated as a downgrade, which isn't
really what you want to happen as from a user POV its an upgrade.
(cherry picked from commit cb9ac09bd6a36e73c2dce1d529acde6e4d15e32d)
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If we have a (e.g. locally built) deb file installed and do try to
install it again apt complained about this being a downgrade, but it
wasn't as it is the very same version… it was just confused into not
merging the versions together which looks like a downgrade then.
The same size assumption is usually good, but given that volatile files
are parsed last (even after the status file) the base assumption no
longer holds, but is easy to adept without actually changing anything in
practice.
(cherry picked from commit e7edb2fef8370d54a4b8e5a01266e6eda81ef84e)
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Traditionally all providers are protected providing something as apt
can't know which of them is actually really providing the functionality
for the user ensuring that we don't propose the removal of used stuff,
but that is of course also keeping stuff around which could be removed.
That can cause the collection of multiple old providers until the
provided package is itself no longer needed (e.g. out-of-tree kernel
modules). We combat this by marking providers only from the newest
source package version so that old providers built by older versions of
the same source package can be garbage collected.
(cherry picked from commit a0ed43f7323b9d7976ed0ba8d437a42e24af9eaf)
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As the previous commit, this shouldn't change behavior at all, but
beside being more explicit and perhaps faster its also considerably
shorter (granted, mostly by if0-block elimination).
Gbp-Dch: Ignore
(cherry picked from commit 5a3339db48479114a0e1e11ebc8d640eb3e49933)
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Piling everything in a single if statement always made my head wobble,
but it hasn't even a benefit as the most common case of a package which
isn't installed passes all of the old if and lands in the non-existent
else-part of the inner if. So beside a subjective cleanup of what goes
on this implementation should also be a bit faster.
No change in behavior should be present.
Gbp-Dch: Ignore
(cherry picked from commit 769e9f3ea1cbe67d3b98e6db6c956abde2384868)
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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.
(cherry picked from commit 84573326f41dd09b914b8374548e7ee7c93d0439)
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Writing first means that even in the event of a power-failure the
autobit is saved for future processing instead of "forgotten" so that
the package is treated as manually installed.
In some cases we have to re-run the writing after dpkg is done through
as dpkg can let packages disappear and in such cases apt will move
autobits around (or in that case non-autobits) which we need to store.
(cherry picked from commit 309f497b7280a45e3626493318adb6d39ba5c69b)
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If we can't read the old file we can't just move forward as that would
discard potentially discard old data (especially other fields). We let
it fail only after we are done writing the new file so a user has the
chance to look into and merge the new data (which is otherwise
discarded).
(cherry picked from commit 520931867ee2fac8415a624204414d3b62550996)
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We deploy atomic renames for some files, but these renames also happen
if something about the file failed which isn't really the point of the
exercise…
Closes: 828908
(cherry picked from commit fc5db01bb7d1546944200d197866b0b5c378f100)
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Needed for the previous change
(cherry picked from commit 33aa2752e7c7a6f0a01b191111aa35a5fe69cf20)
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If a package file is formatted in a way that that no space
follows a deprecated "<", we would reformat it to "<=" and
increase the length of the output by 1, which can break.
Under normal circumstances with "<=" this should not be an
issue.
Closes: #828812
(cherry picked from commit b6e9756ca03ec887ef1d0bc8e38f63c29db7a365)
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Seen in #828011 if we fail to parse a header field like Last-Modified we
end up interpreting the data as response header for coming requests in
case we don't rotate to a new server in DNS rotation.
(cherry picked from commit cc0a4c82b3c132abba9b9ec35fd61bc8b45a1b80)
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.. instead of hardcoding the functionnality in the apt.systemd.daily
script.
Also make the compatibility cron job provide the same functionnality
for systems that do not use systemd.
Closes: #827930
(cherry picked from commit 51d659e7d8cdce59f910eceeee68e2c2afdb70d4)
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wu-ftpd sends the response without parens, whereas we expect
them.
I did not test the patch, but it should work. I added another
return true if Pos is still npos after the second find to make
sure we don't add npos to the string.
Thanks: Lukasz Stelmach for the initial patch
Closes: #420940
(cherry picked from commit 25a694165ae46c159e0d91bf0b27717f00dbc66e)
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Filesize is a silly hash all by itself, but in combination with others
it can be a strong opponent, so ensuring that it is in the list of
hashes and hence checked by the normal course of action the acquire
process takes is a good thing.
(cherry picked from commit 5da51e0e2da3f055306562d38103b06a23d81719)
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If apt decides it can't download a file it is relatively pointless to
try to tell dpkg-source to unpack it.
(cherry picked from commit 60a0cb424e91acebc2bba0f9add220b474e432e6)
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Check for cached hash entries to determine which (if any) hash types
need to be generated for the current file.
In 1.0.9, each hash type was handled by a separate method, each of
which checked the cache. It looks like when these code paths were
unified (in a311fb96b84757ef8628e6a754232614a53b7891) the cache
checks were not incorporated into the new method.
(cherry picked from commit 51018e947ab1df3ddba5d7a84ed2284d599d8a12)
Pull request Debian/apt#16
Closes: #806924
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