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2016-05-03remove 100-levels config nesting limitDavid Kalnischkies
The actual reason for this commit isn't the limit – there isn't much point in using that much nesting – its in shutting up gcc mostly: apt/apt-pkg/contrib/configuration.cc: In function ‘bool ReadConfigFile(Configuration&, const string&, const bool&, const unsigned int&)’: apt/apt-pkg/contrib/configuration.cc:686:20: warning: cannot optimize loop, the loop counter may overflow [-Wunsafe-loop-optimizations] string Stack[100]; ^ by replacing this with C++s handy std::stack container (adapter). Also cleans some whitespace noise from the file in the process.
2016-05-01support Signed-By in Release files as a sort of HPKPDavid Kalnischkies
Users have the option since apt >= 1.1 to enforce that a Release file is signed with specific key(s) either via keyring filename or fingerprints. This commit adds an entry with the same name and value (except that it doesn't accept filenames for obvious reasons) to the Release file so that the repository owner can set a default value for this setting effecting the *next* Release file, not the current one, which provides a functionality similar "HTTP Public Key Pinning". The pinning is in effect as long as the (then old) Release file is considered valid, but it is also ignored if the Release file has no Valid-Until at all.
2016-05-01support multiple fingerprints in signed-byDavid Kalnischkies
A keyring file can include multiple keys, so its only fair for transitions and such to support multiple fingerprints as well.
2016-05-01don't show NO_PUBKEY warning if repo is signed by another keyDavid Kalnischkies
Daniel Kahn Gillmor highlights in the bugreport that security isn't improving by having the user import additional keys – especially as importing keys securely is hard. The bugreport was initially about dropping the warning to a notice, but in given the previously mentioned observation and the fact that we weren't printing a warning (or a notice) for expired or revoked keys providing a signature we drop it completely as the code to display a message if this was the only key is in another path – and is considered critical. Closes: 618445
2016-05-01show StateCache flags in Pkg debug prettyprintDavid Kalnischkies
This basically introduces ~33 flags in the output, but a package can have only ~11 of them displayed at the same time. There is quiet a bit of duplication also (an uninstalled package is by definition a newinstall if its getting installed), but as this is debug output we are better of showing them all in case one of them isn't set in a way it is supposed to be set. Git-Dch: Ignore
2016-04-28deb822: Restore support for <multivalue>-{Add,Remove}James McCoy
Redesign of multivalue options in 463c8d801595ce5ac94d7c032264820be7434232 caused the parser to look for <multivalue>{Add,Remove} (no hyphen) instead of the expected <multivalue>-{Add,Remove}.
2016-04-28factor out Pkg/DepIterator prettyprinters into own headerDavid Kalnischkies
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.
2016-04-28deprecate confusing Pkg.CandVersion() methodDavid Kalnischkies
This method does not return the 'current' candidate of the DepCache which would be most expected, but instead returns the version which would be candidate in a default-only policy setting – aka ignoring apt_preferences settings and co.
2016-04-28respect user pinning in M-A:same version (un)screwingDavid Kalnischkies
Using Pkg.CandVersion() here is wrong as its implementation will return a candidate based just on the default policy settings ignoring user preferences and otherwise set candidates (aka: it sidesteps the pkgDepCache). This causes M-A:same libraries to be detected as screwed even through they aren't, so that they end up being kept back. Reported-By: Felipe Sateler on IRC
2016-04-28FileFd: avoid further writing if file failedDavid Kalnischkies
If the file is in a failed state there is no point in trying to flush out the buffers as the file is to be discarded anyhow & its likely all this flushing is producing is additional error messages. Git-Dch: Ignore
2016-04-25policy: Remove TODO for replacing old GetCandidateVer()Julian Andres Klode
Gbp-Dch: ignore
2016-04-25policy: Get rid of old (pre-1.1) GetCandidateVer algorithmJulian Andres Klode
Bye bye old friend. You're in one Ubuntu LTS release for compat testing, now we do not need you anymore.
2016-04-25restore pinning to min/max value of shortDavid Kalnischkies
Broken in the previous commit (69cea1ef2cfda3c4da79fd756a8edaf2be26998e). Adding a test and a comment to avoid future embarrassment. Git-Dch: Ignore Reported-By: Julian Andres Klode on IRC
2016-04-25give rc-status packages a pin of -1David Kalnischkies
It would previously return a pin of 0, which is an invalid value, but the intend is that versions which are only in the dpkg/status file can't be selected for installation (= can't be a candidate) which is what a negative pin assures. This helps with the communication to EDSP solvers as they neither know about the rc-state (yet) nor that they shouldn't choose this version. Ideally they shouldn't be told about such versions at all as there is nothing to be solved here, but we will get there eventually.
2016-04-25edsp: ask policy engine for the pin of the version directlyDavid Kalnischkies
2016-04-25use the same redirection mirror for all index filesDavid Kalnischkies
Redirection services like httpredir.debian.org tend to use a set of mirrors from which they pick a mirror at "random" for each requested file, which is usually benefitial for the download of debs, but for the index files this can quickly cause problems (aka hashsum mismatches) if the two (or more) mirrors involved are only slightly out-of-sync. This commit "resolves" this issue by using the mirror we ended up using to get the (signed) Release file directly to get the index files belonging to this Release file instead of asking the redirection service which eliminates the risk of hitting out-of-sync mirrors. As an obvious downside the redirection service can't serve partial mirrors anymore for indexes and the download of indexes indexed in the same Release file can't be done in parallel (from different mirrors). This does not effect the download of non-index files like deb-files as out-of-sync mirrors aren't a huge problem there, so the parallel download outweights a potentially 404 error (also because this causes no errenous downloads while hashsum mismatches download the entire file before finding out that it was pointless). The rational for this is that indexes are relative to the Release file. If we would be talking about a HTML page including images, such a behaviour is obvious and intended – not doing it means in the best case a bunch of "useless" requests which will all be answered with a redirect.
2016-04-25show more details for "Writing more data" errors, tooDavid Kalnischkies
They are the small brothers of the hashsum mismatch, so they deserve a similar treatment even through we have for architectual reasons not a much to display as for hashsum mismatches for now.
2016-04-25show more details for "Hash Sum mismatch" errorsDavid Kalnischkies
Users tend to report these errors with just this error message… not very actionable and hard to figure out if this is a temporary or 'permanent' mirror-sync issue or even the occasional apt bug. Showing the involved hashsums and modification times should help in triaging these kind of bugs – and eventually we will have less of them via by-hash. The subheaders aren't marked for translation for now as they are technical glibberish and probably easier to deal with if not translated. After all, our iconic "Hash Sum mismatch" is translated at least. These additions were proposed in #817240 by Peter Palfrader.
2016-04-25properly format multiline error messagesDavid Kalnischkies
2016-04-25sanify unused ReportMirrorFailure a tiny bitDavid Kalnischkies
Calling the (non-existent) reporter multiple times for the same error with different codes for the same error (e.g. hashsum) is a bit strange. It also doesn't need to be a public API. Ideally that would all look and behave slightly different, but we will worry about that at the time this is actually (planed to be) used somewhere… Git-Dch: Ignore
2016-04-25make random acquire queues work less randomDavid Kalnischkies
Queues feeding workers like rred are created in a random pattern to get a few of them to run in parallel – but if we already have an idling queue we don't need to assign it to a (potentially new) random queue as that saves us the (agruably small) overhead of starting up a new queue, avoids adding jobs to an already busy queue while others idle and as a bonus reduces the size of debug logs a bit. We also keep starting new queues now until we reach our limit before we assign work at random to them, which should give us a more effective utilisation overall compared to potentially adding work to busy queues while we haven't reached our queue limit yet.
2016-04-14ensure outdated files are dropped without lists-cleanupDavid Kalnischkies
Tested via (newly) empty index files, but effects also files dropped from the repository or an otherwise changed repository config.
2016-04-14silently skip acquire of empty index filesDavid Kalnischkies
There is just no point in taking the time to acquire empty files – especially as it will be tiny non-empty compressed files usually.
2016-04-14fix Alt-Filename handling of file methodDavid Kalnischkies
A silly of-by-one error in the stripping of the extension to check for the uncompressed filename broken in an attempt to support all compressions in commit a09f6eb8fc67cd2d836019f448f18580396185e5. Fixing this highlights also mistakes in the handling of the Alt-Filename in libapt which would cause apt to remove the file from the repository (if root has the needed rights – aka the disk isn't readonly or similar)
2016-04-13recheck Pre-Depends satisfaction in SmartConfigureDavid Kalnischkies
Regression introduced in commit 590f1923121815b36ef889033c1c416a23cbe9a2 (2011!) causing apt to not check if Pre-Depends are satisfied before calling --configure. This managed to hide so perfectly well for years as Pre-Depends aren't that common, apt prefers upgrading these packages first and checks for satisfaction is already in SmartUnpack, so there is only a small window of oppertunity to break a pre-dependency relation (usually with an unpack). Verified by logchecking with two provided status files in the buglog. I would have liked to write a test, but I wasn't able to reach the needed complexity to get apt to fail – but the change is small and reasonable, so what could possible go wrong™, right? LP: #1569099
2016-04-13detect compressed status files on extension againDavid Kalnischkies
It handy to be able to point apt at reading a compressed dpkg/status file in debugging cases, which worked pre-1.1 but somewhere down the line in the massive refactoring. Restoring this behavior in a central place for all realfile index files instead of just for the status file. (This has no effect on index files acquired from an archive – those are handled by different classes and support compressed files just fine)
2016-04-13do not require non-broken systems in 'upgrade'David Kalnischkies
There is a good chance that the attempt will fail, but if a user mentions certain packages explicitly on the commandline there is a chance that this will consist of a broken system which is resolved by upgrading more packages then just the mentioned. This limitation was not effecting external resolvers.
2016-04-07stop handling items in doomed transactionsDavid Kalnischkies
With the previous commit we track the state of transactions, so we can now use our knowledge to avoid processing data for a transaction which was already closed (via an abort in this case). This is needed as multiple independent processes are interacting in the process, so there isn't a simple immediate full-engine stop and it would also be bad to teach each and every item how to check if its manager has failed subordinate and what to do in that case. In the pdiff case, which deals (potentially) with many items during its lifetime e.g. a hashsum mismatch in another file can abort the transaction the file we try to patch via pdiff belongs to. This causes some of the items (which are already done) to be aborted with it, but items still in the process of acquisition continue in the processing and will later try to use all the items together failing in strange ways as cleanup already happened. The chosen solution is to dry up the communication channels instead by ignoring new requests for data acquisition, canceling requests which are not assigned to a queue and not calling Done/Failed on items anymore. This means that e.g. already started or pending (e.g. pipelined) downloads aren't stopped and continue as normal for now, but they remain in partial/ and aren't processed further so the next update command will pick them up and put them to good use while the current process fails updating (for this transaction group) in an orderly fashion. Closes: 817240 Thanks: Barr Detwix & Vincent Lefevre for log files
2016-04-07ensure transaction states are changed only onceDavid Kalnischkies
We want to keep track of the state of a transaction overall to base future decisions on it, but as a pre-requirement we have to make sure that a transaction isn't commited twice (which happened if the download of InRelease failed and Release takes over). It also happened to create empty commits after a transaction was already aborted in cases in which the Release files were rejected. This isn't effecting security at the moment, but to ensure this isn't happening again and can never be bad a bunch of fatal error messages are added to make regressions on this front visible.
2016-04-03don't leak on error in listparser creationDavid Kalnischkies
Git-Dch: Ignore Reported-By: gcc -fsanitize=address
2016-04-03use buffered writing for InRelease splittingDavid Kalnischkies
Hardly noticeable, but given that we have the option to easily enable it, lets enable it as every newline in the message is written individually by the code.
2016-04-03consistently add APT_OVERRIDE as method markerDavid Kalnischkies
Some methods had it missing, some used the keyword directly, which isn't a problem as it is a cc file, but for consistency lets stick to our macro for now. Git-Dch: Ignore
2016-03-28Allow lowering trust level of a hash via configJulian Andres Klode
Introduces APT::Hashes::<NAME> with entries Untrusted and Weak which can be set to true to cause the hash to be treated as untrusted and/or weak.
2016-03-27Do not mark packages for keep that we want to removeJulian Andres Klode
If the package is marked for removal, keep it marked for removal and do not mark it for keep. If we mark it for keep, we some how later get to a different stage where it is marked for unpack instead of removal. In the example in the bug report, we would get a: SmartUnPack maas-region-controller-min:amd64 (replace version 2.0.0~alpha3+bzr4810-0ubuntu1 with Segmentation fault maas-region-controller-min:amd64 was marked for removal, but we changed it to keep and somehow it thinks that this is to be replaced now instead of removed (probably because the InstallVer != CandidateVer [with InstallVer = 0]). This fixes a regression introduced in release 1.2.7, commit: 0390edd5452b081f8efcf412f96d535a1d959457 Reported-by: LaMont Jones on IRC LP: #1562402
2016-03-25drop confusing comma from no strong hash messageDavid Kalnischkies
2016-03-24Set hidden visibility for StringViewJulian Andres Klode
This avoids templates using StringView to be exported, such as std::vector<StringView*>::emplace_back(). Gbp-Dch: ignore
2016-03-19refactor loading of previous release fileDavid Kalnischkies
There is really no need to have the same code three times. Git-Dch: Ignore
2016-03-19cachefile: Only set members that were initialized successfullyJulian Andres Klode
Otherwise, things will just start failing later down the stack, because (a) the lazy getters do not check if building was successful and (b) any further getter call would return the invalid object anyway. Also initialize VS in pkgCache to nullptr by default. Closes: #818628
2016-03-16do not strip epochs from state version stringsDavid Kalnischkies
The epoch stripping in this code is done since day one, but in other places we show a version epochs are not stripped. If epochs are present in packages they tend to be an important information which we can't just drop and especially can't drop "sometimes" as that confuses users and tools alike – so even if removing code in use for (close to) 18 years feels wrong, it is probably the right choice for consistency. Closes: 818162
2016-03-16Use descriptive URIs in 104 Warning messagesJulian Andres Klode
This makes the new GPG related warnings much nicer to read, for example, the second one here replaces the first one: W: gpgv:/var/lib/apt/lists/example.com_dists_stable_InRelease: Weak ... W: http://example.com/dists/stable/InRelease: Weak ...
2016-03-16Report non-transient errors as errors, not as warningsJulian Andres Klode
This makes it easier to understand what really is an error and what not.
2016-03-16Get accurate progress reporting in apt update againMichael Vogt
For the non-pdiff case, we have can have accurate progress reporting because after fetching the {,In}Release files we know how many IndexFiles will be fetched and what size they have. Therefore init the filesize early (in pkgAcqIndex::Init) and ensure that in Acquire::Pulse() looks at already downloaded bits when calculating the progress in Acquire::Pulse. Also improve debug output of Debug::acquire::progress
2016-03-15Fix bug where the problemresolve can put a pkg into a heisenstateMichael Vogt
The problemresolver will set the candidate version for pkg P back to the current version if it encounters an impossible to satisfy critical dependency on P. However it did not set the State of the package back as well which lead to a situation where P is neither in Keep,Install,Upgrade,Delete state. Note that this can not be tested via the traditional sh based framework. I added a python-apt based test for this. LP: #1550741 [jak@debian.org: Make the test not fail if apt_pkg cannot be imported]
2016-03-15apt-pkg/acquire-worker.cc: Introduce 104 Warning messageJulian Andres Klode
This can be used by workers to send warnings to the main program. The messages will be passed to _error->Warning() by APT with the URI prepended. We are not going to make that really public now, as the interface might change a bit.
2016-03-14enforce verify of filesize in 'apt-get source'David Kalnischkies
The structure we parse the data into has a dedicated size field, but it tends to be easier to handle it as a (very weak) checksum.
2016-03-14don't use Desc.URI to calculate .diff/Index filenamesDavid Kalnischkies
The URI descibing an item can change via mirrors/redirectors which causes the .diff/Index files to get the wrong names in storage. Git-Dch: Ignore
2016-03-14streamline dpkgpm cleanup-handlingDavid Kalnischkies
The (unlikely) waitpid failure case should fallthrough the code just like the other failures (and successes) instead of taking a shortcut avoiding all the cleanup (progress) and finishing touches (log, state). This also delays the cleanup of the progress until apt is really done with everything and "just" has the post-invokes left to do, so the period of 'apt looks finished as it stopped the progress' and 'apt really finished as I have the shell-prompt back' is shorter even if there is no progress reported anymore, so the bar lingers at 100%… Ideally even the post-invokes would be covered by progress, but they can have their own output and dealing with that could be hard. Git-Dch: Ignore
2016-03-14flush line-clearing on progress stop before post-invokeDavid Kalnischkies
All other interactions with std::cout are flushed directly, just in the stop case we hadn't done it – no problem expect if there is still output coming after apt is done like in the case of a post-invoke script producing output. Closes: 793672
2016-03-14require $(HASH)-Download field in .diff/Index filesDavid Kalnischkies
Now that we ignore SHA1-only files it makes sense to require also the provision of hashes for the compressed patches as this was introduced in the same patchset as support for non-SHA1 hashes in the file itself in dak and adding support in other archive creators (if they support pdiffs at all) will likely be in the same batch. The reason for the change itself is simple: If you are 'scared' enough about the security of SHA1, you shouldn't uncompress a file you haven't verified at all – after all, it could be exploiting a bug or a zip bomb.
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.