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2016-03-13Do not consider SHA1 usableJulian Andres Klode
SHA1 is not reasonably secure anymore, so we should not consider it usable anymore. The test suite is adjusted to account for this.
2016-03-07apt-pkg/algorithms.cc: Avoid stack buffer overflow in KillListJulian Andres Klode
Dynamically allocate KillList in order to avoid an overflow when more than 100 elements would be written to it. This happened while playing around with the status file from Bug#701069 on a modern system.
2016-03-07Fix several typosVeres Lajos
This effectively merges branch 'typofixes-vlajos-20150807' of github.com:vlajos/apt with the following commit: commit 13cacb3e2e2352ba701e769fc889e3344fabbf7e Author: Veres Lajos <vlajos@gmail.com> Date: Sun Aug 9 00:12:53 2015 +0100 typofix - https://github.com/vlajos/misspell_fixer It has been rebased for a better commit message.
2016-03-06get group again after potential remap in Source: parseDavid Kalnischkies
Mysteriously segfaults only on i386 for me, but at least one reporter had the same behavior and it makes sense that this is the problem as the parsing of Source: was fixed in 1.2.2 – before the not remapped group was not used. We don't use our usual Dynamic<> trick here as we don't have it in the parser. Its a bit of a layer violation to do this parsing here, but its how it is always was… Until next time with this lovely kind of problem. Closes: 812251 Thanks: Francesco Poli and Marc Haber for testdata.
2016-03-06Prevent double remapping of iterators and string viewsJulian Andres Klode
If an iterator or a stringview has multiple dynamic objects registered with it, it may be remapped twice. Prevent that by noting which iterators/views we have seen and not remapping one if we have already seen it. We most likely do not have any instance of multiple dynamics on a single object, but let's play safe - the overhead is not high.
2016-03-06do not move not-failed pdiff-patches into CWD on failureDavid Kalnischkies
If a single pdiff fails, we have to fail the entire patching endeavour and fall back to getting the complete file instead. That is easy in serverside merged pdiffs as we get them one by one. For clientside we get them all at once through, which means that a failure in one has to stop the entire pipeline, which works as expected (as proven by the bugreporters as they don't even notice it happening). The problem is just that the first failing pdiff will do the cleanup, so another pdiff which happens to be successfully acquired after we processed the failure doesn't find the file it is supposed to use as a basename anymore, so the patch is renamed to what should be the unique extension and moved into the current working directory. Processing is then stopped as the patch realizes that it isn't the last one which completed downloading. On the plus side this means this is neither us using a bad temporary location nor a security problem. It "just" overrides unconditionally files in your current working directory (if you happen to have them named like a pdiff patch – a bit unlikely perhaps) and so drops files there which are never used again. I guess this was introduced in 4e3c5633b1e74b4f58b95f339cfbbf4cbf21ab3e for real as I made the need for the existence of the base file rather explicit, but the potential lingers in the code for far longer. Closes: #816837
2016-03-06Fix lzma write support to handle "try again" caseColin Watson
The liblzma-based write code needs the same tweaks that the read code already has to cope with the situation where lzma_code returns zero the first time through because avail_out is zero, but will do more work if called again. This ports the read tweaks to the write code as closely as possible (including matching comments etc.). Closes: #751688
2016-03-06deal with partially downloaded changelogsDavid Kalnischkies
Changelogs are relatively small and we have no hashes for them, but we had partial support for them before, so lets stick to it. This also deletes the (partial) file before moving the downloaded file into its place – rename(2) should be doing this by itself, but testing on semaphoreci suggests that this isn't always the case (error is "Stale file handle") and we don't need an atomic replace here, so be explicit. Git-Dch: Ignore
2016-02-26Add missing numeric includes in files using std::accumulate()Julian Andres Klode
Reported-By: Helmut Grohne on IRC
2016-02-25Fix crash with empty architecture listJulian Andres Klode
If the architecture list is empty somehow, fail normally. LP: #1549819
2016-02-16pass versioned provides to external solvers in EDSPDavid Kalnischkies
The EDSP output generated by apt didn't include the versioned provides information so that every provides looked like an unversioned one in the eyes of an external resolver.
2016-02-11always download changelogs into /tmp firstDavid Kalnischkies
pkgAcqChangelog has the default behaviour of downloading a changelog to a temporary directory (inside /tmp, not /tmp directly), which is cleaned up on shutdown, but this can be overridden to store the changelog more permanently – but that caries a permission problem. For changelog we can 'easily' solve this by always downloading to a temporary directory and only move it out of there on done.
2016-02-11use local changelog from /usr/share/doc if possibleDavid Kalnischkies
If pkgAcqChangelog is told to acquire the changelog for a version it will check first if this version is installed on the disk and if so will use the local changelog in /usr/share/doc (possibily/likely gz compressed) instead of downloading the file from the web. An option is provided to disable this, which is enabled by default for the Ubuntu vendor as they truncate the local changelogs – and for apts --print-uris action.
2016-02-10get dpkg lock in build-dep if cache was invalid againDavid Kalnischkies
Regression introduced in a249b3e6fd798935a02b769149c9791a6fa6ef16, which in the case of an invalid cache would build the first part unlocked and later pick up the (still unlocked) cache for further processing, so the system got never locked and apt would end up complaining about being unable to release the lock at shutdown. The far more common case of having a valid cache worked as expected and hence covered up the problem – especially as tests who would have noticed it are simulations only, which do not lock. Closes: 814139 Reported-By: Balint Reczey <balint@balintreczey.hu> Reported-By: Helmut Grohne <helmut@subdivi.de> on IRC
2016-02-10Set seekpos to 0 after reopening files in Seek()Julian Andres Klode
If we just reopened the file, we also need to reset the current seek position when we reset the buffer, otherwise the code will not try to seek to the position given to Skip (from 0), but will try to seek to old offset + the position given to skip. Closes: #812994, #813000
2016-02-04Use some semantically more correct buffer operationsJulian Andres Klode
When writing into the buffer write to free() bytes starting at getend(), instead of buffersize_max bytes at get() -> get() is a read pointer. This makes no difference in practice though, as we reset the buffer before the call, so start = end = 0. Gbp-Dch: ignore
2016-02-04Correctly report write errors when flushing buffered writerJulian Andres Klode
We cannot just return false without setting an error, as InternalWrite does not set one itself.
2016-02-04Merge branch 'master' of github.com:adrian17/aptJulian Andres Klode
2016-02-03edspsystem.cc: include <stdlib.h> for mkdtempFredrik Fornwall
Include <stdlib.h> to ensure that mkdtemp(3) is defined to improve general portability and fix a specific build failure on Android. Closes: #807367
2016-02-03Avoid temporary strings in SubstVar.Adrian Wielgosik
Microoptimization, but still gives a measurable 2-3% improvement when using commands with lots of output like `apt list`.
2016-02-01Do not buffer writes larger than the buffer if possibleJulian Andres Klode
It makes no sense to split a large block into multiple small blocks, so when we have the chance to write them unbuffered, do so.
2016-02-01BufferedWriteFileFdPrivate: Simplify InternalWrite()Julian Andres Klode
We do not need the loop, FileFd::Private() handles this for us. Gbp-Dch: ignore
2016-02-01simple_buffer::write: Use free() instead of maxsize - size()Julian Andres Klode
We want to check whether the amount of free space is smaller than the requested write size. Checking maxsize - size() is incorrect for bufferstart >= 0, as size() = end - start. Gbp-Dch: ignore
2016-01-31support <libc>-<kernel>-<cpu> in architecture specsDavid Kalnischkies
APT has a different understanding than dpkg (#748936) what matches and what doesn't match an architecture specification as it isn't converting back (and forward) to Debian triplets. That has to eventually be solved some way or the other, but until that happens we change the matching in apt so that porters can continue their work on non-gnu libc-ports even if policy doesn't specify that yet (and dpkg just supporting it "by accident" via triplets). The initial patch was reformatted, fixed in terms of patterns containing "any-any", dealing with expanding an arch without libc to gnu while a pattern expands libc to any, the parsedepends test was fixed (the new if's were inserted one step too early) and another test just for the specifications added. Closes: #812212 Thanks: Bálint Réczey for initial patch
2016-01-31use CPPFLAGS instead of CXXFLAGS for stringview exportDavid Kalnischkies
Git-Dch: Ignore
2016-01-30fix "Mismatched free() / delete / delete []" in simple_bufferStefan Bühler
2016-01-27only warn about missing/invalid Date field for nowDavid Kalnischkies
The Date field in the Release file is useful to avoid allowing an attacker to 'downgrade' a user to earlier Release files (and hence to older states of the archieve with open security bugs). It is also needed to allow a user to define min/max values for the validation of a Release file (with or without the Release file providing a Valid-Until field). APT wasn't formally requiring this field before through and (agrueable not binding and still incomplete) online documentation declares it optional (until now), so we downgrade the error to a warning for now to give repository creators a bit more time to adapt – the bigger ones should have a Date field for years already, so the effected group should be small in any case. It should be noted that earlier apt versions had this as an error already, but only showed it if a Valid-Until field was present (or the user tried to used the configuration items for min/max valid-until). Closes: 809329
2016-01-27deal better with (very) small apt::cache-start valuesDavid Kalnischkies
It is a bit academic to support values which aren't big enough to fit even the hashtables without resizing, but cleaning up ensures that we do the right thing (aka not segfaulting) even if something goes wrong in these deep layers. You still can't have very very small values through… Git-Dch: Ignore
2016-01-26convert Version() and Architecture() to APT::StringViewDavid Kalnischkies
Part of hidden classes, so conversion is abi-free. Git-Dch: Ignore
2016-01-26remove unused Description methods in listparsersDavid Kalnischkies
These virtual methods are implemented in hidden classes, so we can drop them without breaking the ABI. Git-Dch: Ignore
2016-01-26parse version correctly from binary Source fieldDavid Kalnischkies
In commit a221efc331693f8905da870141756c892911c433 I promoted the source package name and version to the binary cache for faster access by e.g. EDSP, but due to changing the interpretation length to soon we always ignored the version part of the Source field, so that packages ended up having the binary version as source version – which while usually just fine it is wrong for binary rebuilds. Closes: 812492
2016-01-26act on various suggestions from cppcheckDavid Kalnischkies
Reported-By: cppcheck Git-Dch: Ignore
2016-01-26drop explicit check for EWOULDBLOCK if it has the same value as EAGAINDavid Kalnischkies
gcc correctly reports that we check for the same value twice, expect that the manpage of read(2) tells us to do it for portability, so to make both sides happy lets add a little #if'ing here. Reported-By: gcc-6 Git-Dch: Ignore
2016-01-26Delete copy constructor and operator= for DynamicJulian Andres Klode
This would mess up reference counting and should not be allowed (it could be implemented correctly, but it would not be efficient and we do not need it). Gbp-Dch: ignore
2016-01-25reimplement build-dep via apts normal resolverDavid Kalnischkies
build-dep was implemented by parsing the build-dependencies of a package and figuring out which packages to install/remove based on this. That means that for the first level of dependencies build-dep was implementing its very own resolver with all the benefits (aka: bugs) this gives us for not using the existing resolver for all levels. Making this work involves generating a dummy binary package with fitting Depends and Conflicts and as we can't create them out of thin air the cache generation needs to be involved so we end up writing a Packages file which we want to parse – after we have parsed the other Packages files already. With .dsc/.deb files we could add them before we started parsing anything. With a bit of care we can avoid generating too much data we have to throw away again (as many parts assume that e.g. the count of packages doesn't change midair), so that on a speed front there shouldn't be much of a difference, but output can be slightly confusing as if we have a completely valid cache on disk the "Reading package lists... Done" is printed two times – but apt is pretty quick about it in that case. Closes: #137560, #444930, #489911, #583914, #728317, #812173
2016-01-25use consistently the last : as name:arch separatorDavid Kalnischkies
Proper debian packages do not contain ':' in the package name, so for real packages this is a non-issue, but apt itself frequently makes use of packages with such an illegal name for internal proposes. Git-Dch: Ignore
2016-01-25prefer upgrading installed provides satisfierDavid Kalnischkies
If you have chosen to install a foreign architecture provider it is more reasonable to keep this provider instead of removing this one to replace it with a newer version from a (usually) more preferred arch. Git-Dch: Ignore
2016-01-25treat an empty dependency field just like it doesn't existDavid Kalnischkies
Git-Dch: Ignore
2016-01-25always create pkg at the time pkg:arch is createdDavid Kalnischkies
To resolve dependencies like "pkg:arch" we create a package with the name "pkg:arch" and the architecture "any". We create these packages only if a dependency needs it as these kind of dependencies aren't that common. This commit ensured that in the even this architecture specific dependency is the only relation this package has we still create the underlying package to have them available in provides resolution.
2016-01-25Use c++11 for loop in AptHistoryRequestingUserMichael Vogt
Git-Dch: ignore
2016-01-25Store "Requested-By" user in history.log in a simpler formatMichael Vogt
Git-Dch: ignore Thanks: David Kalnischkies
2016-01-25Log calling SUDO_USER or PKEXEC_UID in history.logMichael Vogt
Thanks: Thomas Reusch
2016-01-23Remap another (non-parameter) StringViewJulian Andres Klode
I only looked at parameters in the previous commit, which was not enough: One place also generated local string views. In this case, we only need to make ArchA dynamic, as NameA is not used after the FindPkg() call. Gbp-Dch: ignore
2016-01-23Remap StringView instances pointing into the cacheJulian Andres Klode
It turns out that StringViews might need to be remapped in some places because they come from the cache. For example, some sites pass a Ver.VerStr() to NewProvides(). Such a StringView would become invalid during the duration of the call if the cache is remapped, causing the program to die with a segmentation fault. We can take care of those issues by remapping string views in the same way we remap all the iterators. String views are only remapped if they point into the cache though, this allows us to write more generic code on the callee site without having to check whether the view points into the cache or not. That's not as efficient as possible, but the overhead does not appear to be measurable. Closes: #812251
2016-01-23Pass the old map size to ReMap()Julian Andres Klode
This allows us to check if a value to be remapped was inside the cache or not, which will become useful at a later point. Gbp-Dch: ignore
2016-01-15string_view: Drop constexpr constructor for standard compatibilityJulian Andres Klode
APT::StringView is supposed to be a temporary measure, until support for the standardized string_view is widely available. Introducing additional unstandardized features just makes porting to the standard version harder. The constexpr constructor also won't have any real effect on most systems, as the compiler will happily optimise the strlen() call away for constant strings. Gbp-Dch: ignore
2016-01-15use APT::StringView for GrabWordDavid Kalnischkies
Git-Dch: Ignore
2016-01-15provide a constexpr char[] overload for APT::StringViewDavid Kalnischkies
The commit also adds a few trivial tests Git-Dch: Ignore
2016-01-15return correct position in APT::StringView::(r)findDavid Kalnischkies
The position returned is supposed to be the position of the character counted from the start of the string, but if we used the substr calling overloads the skipped over prefix wasn't considered. The pos parameter of rfind had also the wrong semantic.
2016-01-15revert file-hash based action-merging in acquireDavid Kalnischkies
Introduced in 9d2a8a7388cf3b0bbbe92f6b0b30a533e1167f40 apt tries to merge actions like downloading the same (as judged by hashes) file into doing it once. The implementation was very simple in that it isn't planing at all. Turns out that it works 90% of the time just fine, but has issues in more complicated situations in which items can be in different stages downloading different files emitting potentially the "wrong" hash – like while pdiffs are worked on we might end up copying the patch instead of the result file giving us very strange errors in return. Reverting the change until we can implement a better planing solution seems to be the best course of action even if its sad. Closes: 810046