X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/a628ca5256b4a2f3ae300697b17adf150b6e17b0..b58047e0d8fa8e7d5adca2a24f2ca3ba2596e0ad:/apt-pkg/acquire-item.cc diff --git a/apt-pkg/acquire-item.cc b/apt-pkg/acquire-item.cc index ffe5bd1c4..874539625 100644 --- a/apt-pkg/acquire-item.cc +++ b/apt-pkg/acquire-item.cc @@ -45,13 +45,14 @@ #include #include #include +#include #include /*}}}*/ using namespace std; -static void printHashSumComparision(std::string const &URI, HashStringList const &Expected, HashStringList const &Actual) /*{{{*/ +static void printHashSumComparison(std::string const &URI, HashStringList const &Expected, HashStringList const &Actual) /*{{{*/ { if (_config->FindB("Debug::Acquire::HashSumMismatch", false) == false) return; @@ -85,32 +86,16 @@ static std::string GetKeepCompressedFileName(std::string file, IndexTarget const if (Target.KeepCompressed == false) return file; - std::string const CompressionTypes = Target.Option(IndexTarget::COMPRESSIONTYPES); - if (CompressionTypes.empty() == false) + std::string const KeepCompressedAs = Target.Option(IndexTarget::KEEPCOMPRESSEDAS); + if (KeepCompressedAs.empty() == false) { - std::string const ext = CompressionTypes.substr(0, CompressionTypes.find(' ')); + std::string const ext = KeepCompressedAs.substr(0, KeepCompressedAs.find(' ')); if (ext != "uncompressed") file.append(".").append(ext); } return file; } /*}}}*/ -static std::string GetCompressedFileName(IndexTarget const &Target, std::string const &Name, std::string const &Ext) /*{{{*/ -{ - if (Ext.empty() || Ext == "uncompressed") - return Name; - - // do not reverify cdrom sources as apt-cdrom may rewrite the Packages - // file when its doing the indexcopy - if (Target.URI.substr(0,6) == "cdrom:") - return Name; - - // adjust DestFile if its compressed on disk - if (Target.KeepCompressed == true) - return Name + '.' + Ext; - return Name; -} - /*}}}*/ static std::string GetMergeDiffsPatchFileName(std::string const &Final, std::string const &Patch)/*{{{*/ { // rred expects the patch as $FinalFile.ed.$patchname.gz @@ -123,28 +108,27 @@ static std::string GetDiffsPatchFileName(std::string const &Final) /*{{{*/ return Final + ".ed"; } /*}}}*/ -static bool BootstrapPDiffWith(std::string const &PartialFile, std::string const &FinalFile, IndexTarget const &Target)/*{{{*/ +static std::string GetExistingFilename(std::string const &File) /*{{{*/ { - // patching needs to be bootstrapped with the 'old' version - std::vector types = VectorizeString(Target.Option(IndexTarget::COMPRESSIONTYPES), ' '); - auto typeItr = types.cbegin(); - for (; typeItr != types.cend(); ++typeItr) + if (RealFileExists(File)) + return File; + for (auto const &type : APT::Configuration::getCompressorExtensions()) { - std::string Final = FinalFile; - if (*typeItr != "uncompressed") - Final.append(".").append(*typeItr); - if (RealFileExists(Final) == false) - continue; - std::string Partial = PartialFile; - if (*typeItr != "uncompressed") - Partial.append(".").append(*typeItr); - if (FileExists(Partial.c_str()) == true) - return true; - if (symlink(Final.c_str(), Partial.c_str()) != 0) - return false; - break; + std::string const Final = File + type; + if (RealFileExists(Final)) + return Final; } - return typeItr != types.cend(); + return ""; +} + /*}}}*/ +static std::string GetDiffIndexFileName(std::string const &Name) /*{{{*/ +{ + return Name + ".diff/Index"; +} + /*}}}*/ +static std::string GetDiffIndexURI(IndexTarget const &Target) /*{{{*/ +{ + return Target.URI + ".diff/Index"; } /*}}}*/ @@ -232,12 +216,12 @@ HashStringList pkgAcqMetaBase::GetExpectedHashes() const APT_CONST bool pkgAcqIndexDiffs::HashesRequired() const { - /* We don't always have the diff of the downloaded pdiff file. - What we have for sure is hashes for the uncompressed file, - but rred uncompresses them on the fly while parsing, so not handled here. - Hashes are (also) checked while searching for (next) patch to apply. */ + /* We can't check hashes of rred result as we don't know what the + hash of the file will be. We just know the hash of the patch(es), + the hash of the file they will apply on and the hash of the resulting + file. */ if (State == StateFetchDiff) - return available_patches[0].download_hashes.empty() == false; + return true; return false; } HashStringList pkgAcqIndexDiffs::GetExpectedHashes() const @@ -253,7 +237,7 @@ APT_CONST bool pkgAcqIndexMergeDiffs::HashesRequired() const we can check the rred result after all patches are applied as we know the expected result rather than potentially apply more patches */ if (State == StateFetchDiff) - return patch.download_hashes.empty() == false; + return true; return State == StateApplyDiff; } HashStringList pkgAcqIndexMergeDiffs::GetExpectedHashes() const @@ -297,6 +281,12 @@ bool pkgAcquire::Item::QueueURI(pkgAcquire::ItemDesc &Item) for a hashsum mismatch to happen which helps nobody) */ bool pkgAcqTransactionItem::QueueURI(pkgAcquire::ItemDesc &Item) { + if (TransactionManager->State != TransactionStarted) + { + if (_config->FindB("Debug::Acquire::Transaction", false)) + std::clog << "Skip " << Target.URI << " as transaction was already dealt with!" << std::endl; + return false; + } std::string const FinalFile = GetFinalFilename(); if (TransactionManager != NULL && TransactionManager->IMSHit == true && FileExists(FinalFile) == true) @@ -327,17 +317,17 @@ bool pkgAcqDiffIndex::QueueURI(pkgAcquire::ItemDesc &Item) // Acquire::Item::GetFinalFilename and specialisations for child classes /*{{{*/ std::string pkgAcquire::Item::GetFinalFilename() const { + // Beware: Desc.URI is modified by redirections return GetFinalFileNameFromURI(Desc.URI); } std::string pkgAcqDiffIndex::GetFinalFilename() const { - // the logic we inherent from pkgAcqBaseIndex isn't what we need here - return pkgAcquire::Item::GetFinalFilename(); + return GetFinalFileNameFromURI(GetDiffIndexURI(Target)); } std::string pkgAcqIndex::GetFinalFilename() const { std::string const FinalFile = GetFinalFileNameFromURI(Target.URI); - return GetCompressedFileName(Target, FinalFile, CurrentCompressionExtension); + return GetKeepCompressedFileName(FinalFile, Target); } std::string pkgAcqMetaSig::GetFinalFilename() const { @@ -369,7 +359,7 @@ std::string pkgAcqIndex::GetMetaKey() const } std::string pkgAcqDiffIndex::GetMetaKey() const { - return Target.MetaKey + ".diff/Index"; + return GetDiffIndexFileName(Target.MetaKey); } /*}}}*/ //pkgAcqTransactionItem::TransactionState and specialisations for child classes /*{{{*/ @@ -378,6 +368,7 @@ bool pkgAcqTransactionItem::TransactionState(TransactionStates const state) bool const Debug = _config->FindB("Debug::Acquire::Transaction", false); switch(state) { + case TransactionStarted: _error->Fatal("Item %s changed to invalid transaction start state!", Target.URI.c_str()); break; case TransactionAbort: if(Debug == true) std::clog << " Cancel: " << DestFile << std::endl; @@ -388,16 +379,66 @@ bool pkgAcqTransactionItem::TransactionState(TransactionStates const state) } break; case TransactionCommit: - if(PartialFile != "") + if(PartialFile.empty() == false) { - if(Debug == true) - std::clog << "mv " << PartialFile << " -> "<< DestFile << " # " << DescURI() << std::endl; + bool sameFile = (PartialFile == DestFile); + // we use symlinks on IMS-Hit to avoid copies + if (RealFileExists(DestFile)) + { + struct stat Buf; + if (lstat(PartialFile.c_str(), &Buf) != -1) + { + if (S_ISLNK(Buf.st_mode) && Buf.st_size > 0) + { + char partial[Buf.st_size + 1]; + ssize_t const sp = readlink(PartialFile.c_str(), partial, Buf.st_size); + if (sp == -1) + _error->Errno("pkgAcqTransactionItem::TransactionState-sp", _("Failed to readlink %s"), PartialFile.c_str()); + else + { + partial[sp] = '\0'; + sameFile = (DestFile == partial); + } + } + } + else + _error->Errno("pkgAcqTransactionItem::TransactionState-stat", _("Failed to stat %s"), PartialFile.c_str()); + } + if (sameFile == false) + { + // ensure that even without lists-cleanup all compressions are nuked + std::string FinalFile = GetFinalFileNameFromURI(Target.URI); + if (FileExists(FinalFile)) + { + if(Debug == true) + std::clog << "rm " << FinalFile << " # " << DescURI() << std::endl; + if (RemoveFile("TransactionStates-Cleanup", FinalFile) == false) + return false; + } + for (auto const &ext: APT::Configuration::getCompressorExtensions()) + { + auto const Final = FinalFile + ext; + if (FileExists(Final)) + { + if(Debug == true) + std::clog << "rm " << Final << " # " << DescURI() << std::endl; + if (RemoveFile("TransactionStates-Cleanup", Final) == false) + return false; + } + } + if(Debug == true) + std::clog << "mv " << PartialFile << " -> "<< DestFile << " # " << DescURI() << std::endl; + if (Rename(PartialFile, DestFile) == false) + return false; + } + else if(Debug == true) + std::clog << "keep " << PartialFile << " # " << DescURI() << std::endl; - Rename(PartialFile, DestFile); } else { if(Debug == true) std::clog << "rm " << DestFile << " # " << DescURI() << std::endl; - RemoveFile("TransactionCommit", DestFile); + if (RemoveFile("TransItem::TransactionCommit", DestFile) == false) + return false; } break; } @@ -417,18 +458,19 @@ bool pkgAcqIndex::TransactionState(TransactionStates const state) switch (state) { + case TransactionStarted: _error->Fatal("AcqIndex %s changed to invalid transaction start state!", Target.URI.c_str()); break; case TransactionAbort: if (Stage == STAGE_DECOMPRESS_AND_VERIFY) { // keep the compressed file, but drop the decompressed EraseFileName.clear(); - if (PartialFile.empty() == false && flExtension(PartialFile) == "decomp") + if (PartialFile.empty() == false && flExtension(PartialFile) != CurrentCompressionExtension) RemoveFile("TransactionAbort", PartialFile); } break; case TransactionCommit: if (EraseFileName.empty() == false) - RemoveFile("TransactionCommit", EraseFileName); + RemoveFile("AcqIndex::TransactionCommit", EraseFileName); break; } return true; @@ -440,6 +482,7 @@ bool pkgAcqDiffIndex::TransactionState(TransactionStates const state) switch (state) { + case TransactionStarted: _error->Fatal("Item %s changed to invalid transaction start state!", Target.URI.c_str()); break; case TransactionCommit: break; case TransactionAbort: @@ -476,6 +519,41 @@ class APT_HIDDEN NoActionItem : public pkgAcquire::Item /*{{{*/ } }; /*}}}*/ +class APT_HIDDEN CleanupItem : public pkgAcqTransactionItem /*{{{*/ +/* This class ensures that a file which was configured but isn't downloaded + for various reasons isn't kept in an old version in the lists directory. + In a way its the reverse of NoActionItem as it helps with removing files + even if the lists-cleanup is deactivated. */ +{ + public: + virtual std::string DescURI() const APT_OVERRIDE {return Target.URI;}; + virtual HashStringList GetExpectedHashes() const APT_OVERRIDE {return HashStringList();}; + + CleanupItem(pkgAcquire * const Owner, pkgAcqMetaClearSig * const TransactionManager, IndexTarget const &Target) : + pkgAcqTransactionItem(Owner, TransactionManager, Target) + { + Status = StatDone; + DestFile = GetFinalFileNameFromURI(Target.URI); + } + bool TransactionState(TransactionStates const state) APT_OVERRIDE + { + switch (state) + { + case TransactionStarted: + break; + case TransactionAbort: + break; + case TransactionCommit: + if (_config->FindB("Debug::Acquire::Transaction", false) == true) + std::clog << "rm " << DestFile << " # " << DescURI() << std::endl; + if (RemoveFile("TransItem::TransactionCommit", DestFile) == false) + return false; + break; + } + return true; + } +}; + /*}}}*/ // Acquire::Item::Item - Constructor /*{{{*/ APT_IGNORE_DEPRECATED_PUSH @@ -768,6 +846,32 @@ HashStringList pkgAcqTransactionItem::GetExpectedHashesFor(std::string const &Me } /*}}}*/ +static void LoadLastMetaIndexParser(pkgAcqMetaClearSig * const TransactionManager, std::string const &FinalRelease, std::string const &FinalInRelease)/*{{{*/ +{ + if (TransactionManager->IMSHit == true) + return; + if (RealFileExists(FinalInRelease) || RealFileExists(FinalRelease)) + { + TransactionManager->LastMetaIndexParser = TransactionManager->MetaIndexParser->UnloadedClone(); + if (TransactionManager->LastMetaIndexParser != NULL) + { + _error->PushToStack(); + if (RealFileExists(FinalInRelease)) + TransactionManager->LastMetaIndexParser->Load(FinalInRelease, NULL); + else + TransactionManager->LastMetaIndexParser->Load(FinalRelease, NULL); + // its unlikely to happen, but if what we have is bad ignore it + if (_error->PendingError()) + { + delete TransactionManager->LastMetaIndexParser; + TransactionManager->LastMetaIndexParser = NULL; + } + _error->RevertToStack(); + } + } +} + /*}}}*/ + // AcqMetaBase - Constructor /*{{{*/ pkgAcqMetaBase::pkgAcqMetaBase(pkgAcquire * const Owner, pkgAcqMetaClearSig * const TransactionManager, @@ -775,7 +879,7 @@ pkgAcqMetaBase::pkgAcqMetaBase(pkgAcquire * const Owner, IndexTarget const &DataTarget) : pkgAcqTransactionItem(Owner, TransactionManager, DataTarget), d(NULL), IndexTargets(IndexTargets), - AuthPass(false), IMSHit(false) + AuthPass(false), IMSHit(false), State(TransactionStarted) { } /*}}}*/ @@ -791,10 +895,20 @@ void pkgAcqMetaBase::AbortTransaction() if(_config->FindB("Debug::Acquire::Transaction", false) == true) std::clog << "AbortTransaction: " << TransactionManager << std::endl; + switch (TransactionManager->State) + { + case TransactionStarted: break; + case TransactionAbort: _error->Fatal("Transaction %s was already aborted and is aborted again", TransactionManager->Target.URI.c_str()); return; + case TransactionCommit: _error->Fatal("Transaction %s was already aborted and is now commited", TransactionManager->Target.URI.c_str()); return; + } + TransactionManager->State = TransactionAbort; + // ensure the toplevel is in error state too for (std::vector::iterator I = Transaction.begin(); I != Transaction.end(); ++I) { + if ((*I)->Status != pkgAcquire::Item::StatFetching) + Owner->Dequeue(*I); (*I)->TransactionState(TransactionAbort); } Transaction.clear(); @@ -824,6 +938,14 @@ void pkgAcqMetaBase::CommitTransaction() if(_config->FindB("Debug::Acquire::Transaction", false) == true) std::clog << "CommitTransaction: " << this << std::endl; + switch (TransactionManager->State) + { + case TransactionStarted: break; + case TransactionAbort: _error->Fatal("Transaction %s was already commited and is now aborted", TransactionManager->Target.URI.c_str()); return; + case TransactionCommit: _error->Fatal("Transaction %s was already commited and is again commited", TransactionManager->Target.URI.c_str()); return; + } + TransactionManager->State = TransactionCommit; + // move new files into place *and* remove files that are not // part of the transaction but are still on disk for (std::vector::iterator I = Transaction.begin(); @@ -980,25 +1102,7 @@ bool pkgAcqMetaBase::CheckAuthDone(string const &Message) /*{{{*/ FinalInRelease = FinalFile.substr(0, FinalFile.length() - strlen("Release")) + "InRelease"; FinalRelease = FinalFile; } - if (RealFileExists(FinalInRelease) || RealFileExists(FinalRelease)) - { - TransactionManager->LastMetaIndexParser = TransactionManager->MetaIndexParser->UnloadedClone(); - if (TransactionManager->LastMetaIndexParser != NULL) - { - _error->PushToStack(); - if (RealFileExists(FinalInRelease)) - TransactionManager->LastMetaIndexParser->Load(FinalInRelease, NULL); - else - TransactionManager->LastMetaIndexParser->Load(FinalRelease, NULL); - // its unlikely to happen, but if what we have is bad ignore it - if (_error->PendingError()) - { - delete TransactionManager->LastMetaIndexParser; - TransactionManager->LastMetaIndexParser = NULL; - } - _error->RevertToStack(); - } - } + LoadLastMetaIndexParser(TransactionManager, FinalRelease, FinalInRelease); } if (TransactionManager->MetaIndexParser->Load(DestFile, &ErrorText) == false) @@ -1044,10 +1148,12 @@ void pkgAcqMetaBase::QueueIndexes(bool const verify) /*{{{*/ // than invent an entirely new flag we would need to carry for all of eternity. if (Target->Option(IndexTarget::ARCHITECTURE) == "all") { - if (TransactionManager->MetaIndexParser->IsArchitectureSupported("all") == false) - continue; - if (TransactionManager->MetaIndexParser->IsArchitectureAllSupportedFor(*Target) == false) + if (TransactionManager->MetaIndexParser->IsArchitectureSupported("all") == false || + TransactionManager->MetaIndexParser->IsArchitectureAllSupportedFor(*Target) == false) + { + new CleanupItem(Owner, TransactionManager, *Target); continue; + } } bool trypdiff = Target->OptionBool(IndexTarget::PDIFFS); @@ -1057,13 +1163,17 @@ void pkgAcqMetaBase::QueueIndexes(bool const verify) /*{{{*/ { // optional targets that we do not have in the Release file are skipped if (Target->IsOptional) + { + new CleanupItem(Owner, TransactionManager, *Target); continue; + } std::string const &arch = Target->Option(IndexTarget::ARCHITECTURE); if (arch.empty() == false) { if (TransactionManager->MetaIndexParser->IsArchitectureSupported(arch) == false) { + new CleanupItem(Owner, TransactionManager, *Target); _error->Notice(_("Skipping acquire of configured file '%s' as repository '%s' doesn't support architecture '%s'"), Target->MetaKey.c_str(), TransactionManager->Target.Description.c_str(), arch.c_str()); continue; @@ -1072,7 +1182,10 @@ void pkgAcqMetaBase::QueueIndexes(bool const verify) /*{{{*/ // ignore silently as this is pretty much the same as just shipping an empty file. // if we don't know which architectures are supported, we do NOT ignore it to notify user about this if (TransactionManager->MetaIndexParser->IsArchitectureSupported("*undefined*") == false) + { + new CleanupItem(Owner, TransactionManager, *Target); continue; + } } Status = StatAuthError; @@ -1082,11 +1195,21 @@ void pkgAcqMetaBase::QueueIndexes(bool const verify) /*{{{*/ else { auto const hashes = GetExpectedHashesFor(Target->MetaKey); - if (hashes.usable() == false && hashes.empty() == false) + if (hashes.empty() == false) { - _error->Warning(_("Skipping acquire of configured file '%s' as repository '%s' provides only weak security information for it"), + if (hashes.usable() == false) + { + new CleanupItem(Owner, TransactionManager, *Target); + _error->Warning(_("Skipping acquire of configured file '%s' as repository '%s' provides only weak security information for it"), Target->MetaKey.c_str(), TransactionManager->Target.Description.c_str()); - continue; + continue; + } + // empty files are skipped as acquiring the very small compressed files is a waste of time + else if (hashes.FileSize() == 0) + { + new CleanupItem(Owner, TransactionManager, *Target); + continue; + } } } @@ -1117,19 +1240,7 @@ void pkgAcqMetaBase::QueueIndexes(bool const verify) /*{{{*/ else Target->Options["COMPRESSIONTYPES"].clear(); - std::string filename = GetFinalFileNameFromURI(Target->URI); - if (RealFileExists(filename) == false) - { - if (Target->KeepCompressed) - { - filename = GetKeepCompressedFileName(filename, *Target); - if (RealFileExists(filename) == false) - filename.clear(); - } - else - filename.clear(); - } - + std::string filename = GetExistingFilename(GetFinalFileNameFromURI(Target->URI)); if (filename.empty() == false) { // if the Release file is a hit and we have an index it must be the current one @@ -1154,31 +1265,19 @@ void pkgAcqMetaBase::QueueIndexes(bool const verify) /*{{{*/ if (filename.empty() == false) { new NoActionItem(Owner, *Target, filename); - std::string const idxfilename = GetFinalFileNameFromURI(Target->URI + ".diff/Index"); + std::string const idxfilename = GetFinalFileNameFromURI(GetDiffIndexURI(*Target)); if (FileExists(idxfilename)) new NoActionItem(Owner, *Target, idxfilename); continue; } // check if we have patches available - trypdiff &= TransactionManager->MetaIndexParser->Exists(Target->MetaKey + ".diff/Index"); + trypdiff &= TransactionManager->MetaIndexParser->Exists(GetDiffIndexFileName(Target->MetaKey)); } else { // if we have no file to patch, no point in trying - std::string filename = GetFinalFileNameFromURI(Target->URI); - if (RealFileExists(filename) == false) - { - if (Target->KeepCompressed) - { - filename = GetKeepCompressedFileName(filename, *Target); - if (RealFileExists(filename) == false) - filename.clear(); - } - else - filename.clear(); - } - trypdiff &= (filename.empty() == false); + trypdiff &= (GetExistingFilename(GetFinalFileNameFromURI(Target->URI)).empty() == false); } // no point in patching from local sources @@ -1332,6 +1431,15 @@ string pkgAcqMetaClearSig::Custom600Headers() const return Header; } /*}}}*/ +void pkgAcqMetaClearSig::Finished() /*{{{*/ +{ + if(_config->FindB("Debug::Acquire::Transaction", false) == true) + std::clog << "Finished: " << DestFile <State == TransactionStarted && + TransactionManager->TransactionHasError() == false) + TransactionManager->CommitTransaction(); +} + /*}}}*/ bool pkgAcqMetaClearSig::VerifyDone(std::string const &Message, /*{{{*/ pkgAcquire::MethodConfig const * const Cnf) { @@ -1418,30 +1526,7 @@ void pkgAcqMetaClearSig::Failed(string const &Message,pkgAcquire::MethodConfig c string const FinalInRelease = GetFinalFilename(); Rename(DestFile, PartialRelease); TransactionManager->TransactionStageCopy(this, PartialRelease, FinalRelease); - - if (RealFileExists(FinalReleasegpg) || RealFileExists(FinalInRelease)) - { - // open the last Release if we have it - if (TransactionManager->IMSHit == false) - { - TransactionManager->LastMetaIndexParser = TransactionManager->MetaIndexParser->UnloadedClone(); - if (TransactionManager->LastMetaIndexParser != NULL) - { - _error->PushToStack(); - if (RealFileExists(FinalInRelease)) - TransactionManager->LastMetaIndexParser->Load(FinalInRelease, NULL); - else - TransactionManager->LastMetaIndexParser->Load(FinalRelease, NULL); - // its unlikely to happen, but if what we have is bad ignore it - if (_error->PendingError()) - { - delete TransactionManager->LastMetaIndexParser; - TransactionManager->LastMetaIndexParser = NULL; - } - _error->RevertToStack(); - } - } - } + LoadLastMetaIndexParser(TransactionManager, FinalRelease, FinalInRelease); // we parse the indexes here because at this point the user wanted // a repository that may potentially harm him @@ -1514,15 +1599,6 @@ void pkgAcqMetaIndex::Failed(string const &Message, } } /*}}}*/ -void pkgAcqMetaIndex::Finished() /*{{{*/ -{ - if(_config->FindB("Debug::Acquire::Transaction", false) == true) - std::clog << "Finished: " << DestFile <TransactionHasError() == false) - TransactionManager->CommitTransaction(); -} - /*}}}*/ std::string pkgAcqMetaIndex::DescURI() const /*{{{*/ { return Target.URI; @@ -1657,29 +1733,7 @@ void pkgAcqMetaSig::Failed(string const &Message,pkgAcquire::MethodConfig const // only allow going further if the user explicitly wants it if (AllowInsecureRepositories(_("The repository '%s' is not signed."), MetaIndex->Target.Description, TransactionManager->MetaIndexParser, TransactionManager, this) == true) { - if (RealFileExists(FinalReleasegpg) || RealFileExists(FinalInRelease)) - { - // open the last Release if we have it - if (TransactionManager->IMSHit == false) - { - TransactionManager->LastMetaIndexParser = TransactionManager->MetaIndexParser->UnloadedClone(); - if (TransactionManager->LastMetaIndexParser != NULL) - { - _error->PushToStack(); - if (RealFileExists(FinalInRelease)) - TransactionManager->LastMetaIndexParser->Load(FinalInRelease, NULL); - else - TransactionManager->LastMetaIndexParser->Load(FinalRelease, NULL); - // its unlikely to happen, but if what we have is bad ignore it - if (_error->PendingError()) - { - delete TransactionManager->LastMetaIndexParser; - TransactionManager->LastMetaIndexParser = NULL; - } - _error->RevertToStack(); - } - } - } + LoadLastMetaIndexParser(TransactionManager, FinalRelease, FinalInRelease); // we parse the indexes here because at this point the user wanted // a repository that may potentially harm him @@ -1728,9 +1782,9 @@ pkgAcqDiffIndex::pkgAcqDiffIndex(pkgAcquire * const Owner, Debug = _config->FindB("Debug::pkgAcquire::Diffs",false); Desc.Owner = this; - Desc.Description = Target.Description + ".diff/Index"; + Desc.Description = GetDiffIndexFileName(Target.Description); Desc.ShortDesc = Target.ShortDesc; - Desc.URI = Target.URI + ".diff/Index"; + Desc.URI = GetDiffIndexURI(Target); DestFile = GetPartialFileNameFromURI(Desc.URI); @@ -1821,7 +1875,7 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string const &IndexDiffFile) /*{{{*/ if (Debug == true) { std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": Index has different hashes than parser, probably older, so fail pdiffing" << std::endl; - printHashSumComparision(CurrentPackagesFile, ServerHashes, TargetFileHashes); + printHashSumComparison(CurrentPackagesFile, ServerHashes, TargetFileHashes); } return false; } @@ -2022,6 +2076,17 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string const &IndexDiffFile) /*{{{*/ return false; } + for (auto const &patch: available_patches) + if (patch.result_hashes.usable() == false || + patch.patch_hashes.usable() == false || + patch.download_hashes.usable() == false) + { + if (Debug) + std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": provides no usable hashes for " << patch.file + << " so fallback to complete download" << std::endl; + return false; + } + // patching with too many files is rather slow compared to a fast download unsigned long const fileLimit = _config->FindI("Acquire::PDiffs::FileLimit", 0); if (fileLimit != 0 && fileLimit < available_patches.size()) @@ -2033,18 +2098,37 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string const &IndexDiffFile) /*{{{*/ } // calculate the size of all patches we have to get - // note that all sizes are uncompressed, while we download compressed files - unsigned long long patchesSize = 0; - for (std::vector::const_iterator cur = available_patches.begin(); - cur != available_patches.end(); ++cur) - patchesSize += cur->patch_hashes.FileSize(); - unsigned long long const sizeLimit = ServerSize * _config->FindI("Acquire::PDiffs::SizeLimit", 100); - if (sizeLimit > 0 && (sizeLimit/100) < patchesSize) - { - if (Debug) - std::clog << "Need " << patchesSize << " bytes (Limit is " << sizeLimit/100 - << ") so fallback to complete download" << std::endl; - return false; + unsigned short const sizeLimitPercent = _config->FindI("Acquire::PDiffs::SizeLimit", 100); + if (sizeLimitPercent > 0 && TransactionManager->MetaIndexParser != nullptr) + { + unsigned long long downloadSize = std::accumulate(available_patches.begin(), + available_patches.end(), 0llu, [](unsigned long long const T, DiffInfo const &I) { + return T + I.download_hashes.FileSize(); + }); + if (downloadSize != 0) + { + unsigned long long downloadSizeIdx = 0; + auto const types = VectorizeString(Target.Option(IndexTarget::COMPRESSIONTYPES), ' '); + for (auto const &t : types) + { + std::string MetaKey = Target.MetaKey; + if (t != "uncompressed") + MetaKey += '.' + t; + HashStringList const hsl = GetExpectedHashesFor(MetaKey); + if (unlikely(hsl.usable() == false)) + continue; + downloadSizeIdx = hsl.FileSize(); + break; + } + unsigned long long const sizeLimit = downloadSizeIdx * sizeLimitPercent; + if ((sizeLimit/100) < downloadSize) + { + if (Debug) + std::clog << "Need " << downloadSize << " compressed bytes (Limit is " << (sizeLimit/100) << ", " + << "original is " << downloadSizeIdx << ") so fallback to complete download" << std::endl; + return false; + } + } } // we have something, queue the diffs @@ -2065,6 +2149,41 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string const &IndexDiffFile) /*{{{*/ pdiff_merge = (precedence != "merged"); } + // clean the plate + { + std::string const Final = GetExistingFilename(CurrentPackagesFile); + if (unlikely(Final.empty())) // because we wouldn't be called in such a case + return false; + std::string const PartialFile = GetPartialFileNameFromURI(Target.URI); + if (FileExists(PartialFile) && RemoveFile("Bootstrap-linking", PartialFile) == false) + { + if (Debug) + std::clog << "Bootstrap-linking for patching " << CurrentPackagesFile + << " by removing stale " << PartialFile << " failed!" << std::endl; + return false; + } + for (auto const &ext : APT::Configuration::getCompressorExtensions()) + { + std::string const Partial = PartialFile + ext; + if (FileExists(Partial) && RemoveFile("Bootstrap-linking", Partial) == false) + { + if (Debug) + std::clog << "Bootstrap-linking for patching " << CurrentPackagesFile + << " by removing stale " << Partial << " failed!" << std::endl; + return false; + } + } + std::string const Ext = Final.substr(CurrentPackagesFile.length()); + std::string const Partial = PartialFile + Ext; + if (symlink(Final.c_str(), Partial.c_str()) != 0) + { + if (Debug) + std::clog << "Bootstrap-linking for patching " << CurrentPackagesFile + << " by linking " << Final << " to " << Partial << " failed!" << std::endl; + return false; + } + } + if (pdiff_merge == false) new pkgAcqIndexDiffs(Owner, TransactionManager, Target, available_patches); else @@ -2159,13 +2278,6 @@ pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire * const Owner, } else { - if (BootstrapPDiffWith(GetPartialFileNameFromURI(Target.URI), GetFinalFilename(), Target) == false) - { - Failed("Bootstrapping of " + DestFile + " failed", NULL); - return; - } - - // get the next diff State = StateFetchDiff; QueueNextDiff(); } @@ -2183,7 +2295,10 @@ void pkgAcqIndexDiffs::Failed(string const &Message,pkgAcquire::MethodConfig con RenameOnError(PDiffError); std::string const patchname = GetDiffsPatchFileName(DestFile); if (RealFileExists(patchname)) - rename(patchname.c_str(), std::string(patchname + ".FAILED").c_str()); + Rename(patchname, patchname + ".FAILED"); + std::string const UnpatchedFile = GetExistingFilename(GetPartialFileNameFromURI(Target.URI)); + if (UnpatchedFile.empty() == false && FileExists(UnpatchedFile)) + Rename(UnpatchedFile, UnpatchedFile + ".FAILED"); new pkgAcqIndex(Owner, TransactionManager, Target); Finish(); } @@ -2200,13 +2315,7 @@ void pkgAcqIndexDiffs::Finish(bool allDone) // the file will be cleaned if(allDone) { - std::string Final = GetFinalFilename(); - if (Target.KeepCompressed) - { - std::string const ext = flExtension(DestFile); - if (ext.empty() == false) - Final.append(".").append(ext); - } + std::string const Final = GetKeepCompressedFileName(GetFinalFilename(), Target); TransactionManager->TransactionStageCopy(this, DestFile, Final); // this is for the "real" finish @@ -2231,29 +2340,28 @@ void pkgAcqIndexDiffs::Finish(bool allDone) bool pkgAcqIndexDiffs::QueueNextDiff() /*{{{*/ { // calc sha1 of the just patched file - std::string const FinalFile = GetKeepCompressedFileName(GetPartialFileNameFromURI(Target.URI), Target); - if(!FileExists(FinalFile)) + std::string const PartialFile = GetExistingFilename(GetPartialFileNameFromURI(Target.URI)); + if(unlikely(PartialFile.empty())) { - Failed("Message: No FinalFile " + FinalFile + " available", NULL); + Failed("Message: The file " + GetPartialFileNameFromURI(Target.URI) + " isn't available", NULL); return false; } - FileFd fd(FinalFile, FileFd::ReadOnly, FileFd::Extension); + FileFd fd(PartialFile, FileFd::ReadOnly, FileFd::Extension); Hashes LocalHashesCalc; LocalHashesCalc.AddFD(fd); HashStringList const LocalHashes = LocalHashesCalc.GetHashStringList(); if(Debug) - std::clog << "QueueNextDiff: " << FinalFile << " (" << LocalHashes.find(NULL)->toStr() << ")" << std::endl; + std::clog << "QueueNextDiff: " << PartialFile << " (" << LocalHashes.find(NULL)->toStr() << ")" << std::endl; HashStringList const TargetFileHashes = GetExpectedHashesFor(Target.MetaKey); if (unlikely(LocalHashes.usable() == false || TargetFileHashes.usable() == false)) { - Failed("Local/Expected hashes are not usable", NULL); + Failed("Local/Expected hashes are not usable for " + PartialFile, NULL); return false; } - // final file reached before all patches are applied if(LocalHashes == TargetFileHashes) { @@ -2271,7 +2379,7 @@ bool pkgAcqIndexDiffs::QueueNextDiff() /*{{{*/ // error checking and falling back if no patch was found if(available_patches.empty() == true) { - Failed("No patches left to reach target", NULL); + Failed("No patches left to reach target for " + PartialFile, NULL); return false; } @@ -2291,55 +2399,51 @@ bool pkgAcqIndexDiffs::QueueNextDiff() /*{{{*/ void pkgAcqIndexDiffs::Done(string const &Message, HashStringList const &Hashes, /*{{{*/ pkgAcquire::MethodConfig const * const Cnf) { - if(Debug) + if (Debug) std::clog << "pkgAcqIndexDiffs::Done(): " << Desc.URI << std::endl; Item::Done(Message, Hashes, Cnf); - std::string const FinalFile = GetKeepCompressedFileName(GetPartialFileNameFromURI(Target.URI), Target); - std::string const PatchFile = GetDiffsPatchFileName(FinalFile); + std::string const UncompressedUnpatchedFile = GetPartialFileNameFromURI(Target.URI); + std::string const UnpatchedFile = GetExistingFilename(UncompressedUnpatchedFile); + std::string const PatchFile = GetDiffsPatchFileName(UnpatchedFile); + std::string const PatchedFile = GetKeepCompressedFileName(UncompressedUnpatchedFile, Target); - // success in downloading a diff, enter ApplyDiff state - if(State == StateFetchDiff) + switch (State) { - Rename(DestFile, PatchFile); - - if(Debug) - std::clog << "Sending to rred method: " << FinalFile << std::endl; - - State = StateApplyDiff; - Local = true; - Desc.URI = "rred:" + FinalFile; - QueueURI(Desc); - SetActiveSubprocess("rred"); - return; - } - - // success in download/apply a diff, queue next (if needed) - if(State == StateApplyDiff) - { - // remove the just applied patch - available_patches.erase(available_patches.begin()); - RemoveFile("pkgAcqIndexDiffs::Done", PatchFile); - - // move into place - if(Debug) - { - std::clog << "Moving patched file in place: " << std::endl - << DestFile << " -> " << FinalFile << std::endl; - } - Rename(DestFile,FinalFile); - chmod(FinalFile.c_str(),0644); - - // see if there is more to download - if(available_patches.empty() == false) { - new pkgAcqIndexDiffs(Owner, TransactionManager, Target, - available_patches); - return Finish(); - } else - // update - DestFile = FinalFile; - return Finish(true); + // success in downloading a diff, enter ApplyDiff state + case StateFetchDiff: + Rename(DestFile, PatchFile); + DestFile = GetKeepCompressedFileName(UncompressedUnpatchedFile + "-patched", Target); + if(Debug) + std::clog << "Sending to rred method: " << UnpatchedFile << std::endl; + State = StateApplyDiff; + Local = true; + Desc.URI = "rred:" + UnpatchedFile; + QueueURI(Desc); + SetActiveSubprocess("rred"); + return; + // success in download/apply a diff, queue next (if needed) + case StateApplyDiff: + // remove the just applied patch and base file + available_patches.erase(available_patches.begin()); + RemoveFile("pkgAcqIndexDiffs::Done", PatchFile); + RemoveFile("pkgAcqIndexDiffs::Done", UnpatchedFile); + if(Debug) + std::clog << "Moving patched file in place: " << std::endl + << DestFile << " -> " << PatchedFile << std::endl; + Rename(DestFile, PatchedFile); + + // see if there is more to download + if(available_patches.empty() == false) + { + new pkgAcqIndexDiffs(Owner, TransactionManager, Target, available_patches); + Finish(); + } else { + DestFile = PatchedFile; + Finish(true); + } + return; } } /*}}}*/ @@ -2371,11 +2475,9 @@ pkgAcqIndexMergeDiffs::pkgAcqIndexMergeDiffs(pkgAcquire * const Owner, Desc.Owner = this; Description = Target.Description; Desc.ShortDesc = Target.ShortDesc; - Desc.URI = Target.URI + ".diff/" + patch.file + ".gz"; - Desc.Description = Description + " " + patch.file + string(".pdiff"); - - DestFile = GetKeepCompressedFileName(GetPartialFileNameFromURI(Target.URI + ".diff/" + patch.file), Target); + Desc.Description = Description + " " + patch.file + ".pdiff"; + DestFile = GetPartialFileNameFromURI(Desc.URI); if(Debug) std::clog << "pkgAcqIndexMergeDiffs: " << Desc.URI << std::endl; @@ -2396,19 +2498,23 @@ void pkgAcqIndexMergeDiffs::Failed(string const &Message,pkgAcquire::MethodConfi for (std::vector::const_iterator I = allPatches->begin(); I != allPatches->end(); ++I) if ((*I)->State == StateErrorDiff) + { + State = StateErrorDiff; return; + } // first failure means we should fallback State = StateErrorDiff; if (Debug) std::clog << "Falling back to normal index file acquire" << std::endl; - DestFile = GetKeepCompressedFileName(GetPartialFileNameFromURI(Target.URI), Target); RenameOnError(PDiffError); - std::string const patchname = GetMergeDiffsPatchFileName(DestFile, patch.file); - if (RealFileExists(patchname)) - rename(patchname.c_str(), std::string(patchname + ".FAILED").c_str()); - new pkgAcqIndex(Owner, TransactionManager, Target); + if (RealFileExists(DestFile)) + Rename(DestFile, DestFile + ".FAILED"); + std::string const UnpatchedFile = GetExistingFilename(GetPartialFileNameFromURI(Target.URI)); + if (UnpatchedFile.empty() == false && FileExists(UnpatchedFile)) + Rename(UnpatchedFile, UnpatchedFile + ".FAILED"); DestFile.clear(); + new pkgAcqIndex(Owner, TransactionManager, Target); } /*}}}*/ void pkgAcqIndexMergeDiffs::Done(string const &Message, HashStringList const &Hashes, /*{{{*/ @@ -2419,67 +2525,73 @@ void pkgAcqIndexMergeDiffs::Done(string const &Message, HashStringList const &Ha Item::Done(Message, Hashes, Cnf); - std::string const UncompressedFinalFile = GetPartialFileNameFromURI(Target.URI); - std::string const FinalFile = GetKeepCompressedFileName(GetPartialFileNameFromURI(Target.URI), Target); - if (State == StateFetchDiff) + if (std::any_of(allPatches->begin(), allPatches->end(), + [](pkgAcqIndexMergeDiffs const * const P) { return P->State == StateErrorDiff; })) { - Rename(DestFile, GetMergeDiffsPatchFileName(FinalFile, patch.file)); - - // check if this is the last completed diff - State = StateDoneDiff; - for (std::vector::const_iterator I = allPatches->begin(); - I != allPatches->end(); ++I) - if ((*I)->State != StateDoneDiff) - { - if(Debug) - std::clog << "Not the last done diff in the batch: " << Desc.URI << std::endl; - return; - } - - // this is the last completed diff, so we are ready to apply now - State = StateApplyDiff; - - if (BootstrapPDiffWith(UncompressedFinalFile, GetFinalFilename(), Target) == false) - { - Failed("Bootstrapping of " + DestFile + " failed", NULL); - return; - } - if(Debug) - std::clog << "Sending to rred method: " << FinalFile << std::endl; - - Local = true; - Desc.URI = "rred:" + FinalFile; - QueueURI(Desc); - SetActiveSubprocess("rred"); + std::clog << "Another patch failed already, no point in processing this one." << std::endl; + State = StateErrorDiff; return; } - // success in download/apply all diffs, clean up - else if (State == StateApplyDiff) - { - // move the result into place - std::string const Final = GetKeepCompressedFileName(GetFinalFilename(), Target); - if(Debug) - std::clog << "Queue patched file in place: " << std::endl - << DestFile << " -> " << Final << std::endl; - // queue for copy by the transaction manager - TransactionManager->TransactionStageCopy(this, DestFile, Final); + std::string const UncompressedUnpatchedFile = GetPartialFileNameFromURI(Target.URI); + std::string const UnpatchedFile = GetExistingFilename(UncompressedUnpatchedFile); + if (UnpatchedFile.empty()) + { + _error->Fatal("Unpatched file %s doesn't exist (anymore)!", UncompressedUnpatchedFile.c_str()); + State = StateErrorDiff; + return; + } + std::string const PatchFile = GetMergeDiffsPatchFileName(UnpatchedFile, patch.file); + std::string const PatchedFile = GetKeepCompressedFileName(UncompressedUnpatchedFile, Target); - // ensure the ed's are gone regardless of list-cleanup - for (std::vector::const_iterator I = allPatches->begin(); - I != allPatches->end(); ++I) - { - std::string const PartialFile = GetKeepCompressedFileName(GetPartialFileNameFromURI(Target.URI), Target); - std::string const patch = GetMergeDiffsPatchFileName(PartialFile, (*I)->patch.file); - RemoveFile("pkgAcqIndexMergeDiffs::Done", patch); - } - RemoveFile("pkgAcqIndexMergeDiffs::Done", FinalFile); + switch (State) + { + case StateFetchDiff: + Rename(DestFile, PatchFile); - // all set and done - Complete = true; - if(Debug) - std::clog << "allDone: " << DestFile << "\n" << std::endl; + // check if this is the last completed diff + State = StateDoneDiff; + for (std::vector::const_iterator I = allPatches->begin(); + I != allPatches->end(); ++I) + if ((*I)->State != StateDoneDiff) + { + if(Debug) + std::clog << "Not the last done diff in the batch: " << Desc.URI << std::endl; + return; + } + // this is the last completed diff, so we are ready to apply now + DestFile = GetKeepCompressedFileName(UncompressedUnpatchedFile + "-patched", Target); + if(Debug) + std::clog << "Sending to rred method: " << UnpatchedFile << std::endl; + State = StateApplyDiff; + Local = true; + Desc.URI = "rred:" + UnpatchedFile; + QueueURI(Desc); + SetActiveSubprocess("rred"); + return; + case StateApplyDiff: + // success in download & apply all diffs, finialize and clean up + if(Debug) + std::clog << "Queue patched file in place: " << std::endl + << DestFile << " -> " << PatchedFile << std::endl; + + // queue for copy by the transaction manager + TransactionManager->TransactionStageCopy(this, DestFile, GetKeepCompressedFileName(GetFinalFilename(), Target)); + + // ensure the ed's are gone regardless of list-cleanup + for (std::vector::const_iterator I = allPatches->begin(); + I != allPatches->end(); ++I) + RemoveFile("pkgAcqIndexMergeDiffs::Done", GetMergeDiffsPatchFileName(UnpatchedFile, (*I)->patch.file)); + RemoveFile("pkgAcqIndexMergeDiffs::Done", UnpatchedFile); + + // all set and done + Complete = true; + if(Debug) + std::clog << "allDone: " << DestFile << "\n" << std::endl; + return; + case StateDoneDiff: _error->Fatal("Done called for %s which is in an invalid Done state", PatchFile.c_str()); break; + case StateErrorDiff: _error->Fatal("Done called for %s which is in an invalid Error state", PatchFile.c_str()); break; } } /*}}}*/ @@ -2542,6 +2654,10 @@ void pkgAcqIndex::Init(string const &URI, string const &URIDesc, DestFile = GetPartialFileNameFromURI(URI); NextCompressionExtension(CurrentCompressionExtension, CompressionExtensions, false); + // store file size of the download to ensure the fetcher gives + // accurate progress reporting + FileSize = GetExpectedHashes().FileSize(); + if (CurrentCompressionExtension == "uncompressed") { Desc.URI = URI; @@ -2631,20 +2747,6 @@ void pkgAcqIndex::Failed(string const &Message,pkgAcquire::MethodConfig const * TransactionManager->AbortTransaction(); } /*}}}*/ -// AcqIndex::ReverifyAfterIMS - Reverify index after an ims-hit /*{{{*/ -void pkgAcqIndex::ReverifyAfterIMS() -{ - // update destfile to *not* include the compression extension when doing - // a reverify (as its uncompressed on disk already) - DestFile = GetCompressedFileName(Target, GetPartialFileNameFromURI(Target.URI), CurrentCompressionExtension); - - // copy FinalFile into partial/ so that we check the hash again - string FinalFile = GetFinalFilename(); - Stage = STAGE_DECOMPRESS_AND_VERIFY; - Desc.URI = "copy:" + FinalFile; - QueueURI(Desc); -} - /*}}}*/ // AcqIndex::Done - Finished a fetch /*{{{*/ // --------------------------------------------------------------------- /* This goes through a number of states.. On the initial fetch the @@ -2661,100 +2763,92 @@ void pkgAcqIndex::Done(string const &Message, switch(Stage) { case STAGE_DOWNLOAD: - StageDownloadDone(Message, Hashes, Cfg); + StageDownloadDone(Message); break; case STAGE_DECOMPRESS_AND_VERIFY: - StageDecompressDone(Message, Hashes, Cfg); + StageDecompressDone(); break; } } /*}}}*/ // AcqIndex::StageDownloadDone - Queue for decompress and verify /*{{{*/ -void pkgAcqIndex::StageDownloadDone(string const &Message, HashStringList const &, - pkgAcquire::MethodConfig const * const) +void pkgAcqIndex::StageDownloadDone(string const &Message) { + Local = true; Complete = true; - // Handle the unzipd case - std::string FileName = LookupTag(Message,"Alt-Filename"); - if (FileName.empty() == false) + std::string const AltFilename = LookupTag(Message,"Alt-Filename"); + std::string Filename = LookupTag(Message,"Filename"); + + // we need to verify the file against the current Release file again + // on if-modfied-since hit to avoid a stale attack against us + if(StringToBool(LookupTag(Message,"IMS-Hit"),false) == true) { + // copy FinalFile into partial/ so that we check the hash again + string const FinalFile = GetExistingFilename(GetFinalFileNameFromURI(Target.URI)); + if (symlink(FinalFile.c_str(), DestFile.c_str()) != 0) + _error->WarningE("pkgAcqIndex::StageDownloadDone", "Symlinking final file %s back to %s failed", FinalFile.c_str(), DestFile.c_str()); + else + { + EraseFileName = DestFile; + Filename = DestFile; + } Stage = STAGE_DECOMPRESS_AND_VERIFY; - Local = true; - DestFile += ".decomp"; - Desc.URI = "copy:" + FileName; + Desc.URI = "store:" + Filename; QueueURI(Desc); - SetActiveSubprocess("copy"); + SetActiveSubprocess(::URI(Desc.URI).Access); return; } - FileName = LookupTag(Message,"Filename"); - + // methods like file:// give us an alternative (uncompressed) file + else if (Target.KeepCompressed == false && AltFilename.empty() == false) + { + Filename = AltFilename; + EraseFileName.clear(); + } // Methods like e.g. "file:" will give us a (compressed) FileName that is // not the "DestFile" we set, in this case we uncompress from the local file - if (FileName != DestFile && RealFileExists(DestFile) == false) + else if (Filename != DestFile && RealFileExists(DestFile) == false) { - Local = true; - if (Target.KeepCompressed == true) + // symlinking ensures that the filename can be used for compression detection + // that is e.g. needed for by-hash which has no extension over file + if (symlink(Filename.c_str(),DestFile.c_str()) != 0) + _error->WarningE("pkgAcqIndex::StageDownloadDone", "Symlinking file %s to %s failed", Filename.c_str(), DestFile.c_str()); + else { - // but if we don't keep the uncompress we copy the compressed file first - Stage = STAGE_DOWNLOAD; - Desc.URI = "copy:" + FileName; - QueueURI(Desc); - SetActiveSubprocess("copy"); - return; + EraseFileName = DestFile; + Filename = DestFile; } } - else - EraseFileName = FileName; - // we need to verify the file against the current Release file again - // on if-modfied-since hit to avoid a stale attack against us - if(StringToBool(LookupTag(Message,"IMS-Hit"),false) == true) - { - // The files timestamp matches, reverify by copy into partial/ - EraseFileName = ""; - ReverifyAfterIMS(); - return; - } - - // get the binary name for your used compression type - string decompProg; - if(CurrentCompressionExtension == "uncompressed") - decompProg = "copy"; + Stage = STAGE_DECOMPRESS_AND_VERIFY; + DestFile = GetKeepCompressedFileName(GetPartialFileNameFromURI(Target.URI), Target); + if (Filename != DestFile && flExtension(Filename) == flExtension(DestFile)) + Desc.URI = "copy:" + Filename; else - decompProg = _config->Find(string("Acquire::CompressionTypes::").append(CurrentCompressionExtension),""); - if(decompProg.empty() == true) - { - _error->Error("Unsupported extension: %s", CurrentCompressionExtension.c_str()); - return; - } - - if (Target.KeepCompressed == true) + Desc.URI = "store:" + Filename; + if (DestFile == Filename) { + if (CurrentCompressionExtension == "uncompressed") + return StageDecompressDone(); DestFile = "/dev/null"; - EraseFileName.clear(); } - else - DestFile += ".decomp"; + + if (EraseFileName.empty() && Filename != AltFilename) + EraseFileName = Filename; // queue uri for the next stage - Stage = STAGE_DECOMPRESS_AND_VERIFY; - Desc.URI = decompProg + ":" + FileName; QueueURI(Desc); - SetActiveSubprocess(decompProg); + SetActiveSubprocess(::URI(Desc.URI).Access); } /*}}}*/ // AcqIndex::StageDecompressDone - Final verification /*{{{*/ -void pkgAcqIndex::StageDecompressDone(string const &, - HashStringList const &, - pkgAcquire::MethodConfig const * const) +void pkgAcqIndex::StageDecompressDone() { - if (Target.KeepCompressed == true && DestFile == "/dev/null") - DestFile = GetPartialFileNameFromURI(Target.URI + '.' + CurrentCompressionExtension); + if (DestFile == "/dev/null") + DestFile = GetKeepCompressedFileName(GetPartialFileNameFromURI(Target.URI), Target); // Done, queue for rename on transaction finished TransactionManager->TransactionStageCopy(this, DestFile, GetFinalFilename()); - return; } /*}}}*/ pkgAcqIndex::~pkgAcqIndex() {} @@ -3050,9 +3144,14 @@ std::string pkgAcqArchive::ShortDesc() const /*{{{*/ pkgAcqArchive::~pkgAcqArchive() {} // AcqChangelog::pkgAcqChangelog - Constructors /*{{{*/ +class pkgAcqChangelog::Private +{ + public: + std::string FinalFile; +}; pkgAcqChangelog::pkgAcqChangelog(pkgAcquire * const Owner, pkgCache::VerIterator const &Ver, std::string const &DestDir, std::string const &DestFilename) : - pkgAcquire::Item(Owner), d(NULL), SrcName(Ver.SourcePkgName()), SrcVersion(Ver.SourceVerStr()) + pkgAcquire::Item(Owner), d(new pkgAcqChangelog::Private()), SrcName(Ver.SourcePkgName()), SrcVersion(Ver.SourceVerStr()) { Desc.URI = URI(Ver); Init(DestDir, DestFilename); @@ -3061,7 +3160,7 @@ pkgAcqChangelog::pkgAcqChangelog(pkgAcquire * const Owner, pkgCache::VerIterator pkgAcqChangelog::pkgAcqChangelog(pkgAcquire * const Owner, pkgCache::RlsFileIterator const &RlsFile, char const * const Component, char const * const SrcName, char const * const SrcVersion, const string &DestDir, const string &DestFilename) : - pkgAcquire::Item(Owner), d(NULL), SrcName(SrcName), SrcVersion(SrcVersion) + pkgAcquire::Item(Owner), d(new pkgAcqChangelog::Private()), SrcName(SrcName), SrcVersion(SrcVersion) { Desc.URI = URI(RlsFile, Component, SrcName, SrcVersion); Init(DestDir, DestFilename); @@ -3069,7 +3168,7 @@ pkgAcqChangelog::pkgAcqChangelog(pkgAcquire * const Owner, pkgCache::RlsFileIter pkgAcqChangelog::pkgAcqChangelog(pkgAcquire * const Owner, std::string const &URI, char const * const SrcName, char const * const SrcVersion, const string &DestDir, const string &DestFilename) : - pkgAcquire::Item(Owner), d(NULL), SrcName(SrcName), SrcVersion(SrcVersion) + pkgAcquire::Item(Owner), d(new pkgAcqChangelog::Private()), SrcName(SrcName), SrcVersion(SrcVersion) { Desc.URI = URI; Init(DestDir, DestFilename); @@ -3090,30 +3189,44 @@ void pkgAcqChangelog::Init(std::string const &DestDir, std::string const &DestFi return; } - if (DestDir.empty()) + std::string DestFileName; + if (DestFilename.empty()) + DestFileName = flCombine(DestFile, SrcName + ".changelog"); + else + DestFileName = flCombine(DestFile, DestFilename); + + std::string const SandboxUser = _config->Find("APT::Sandbox::User"); + std::string const systemTemp = GetTempDir(SandboxUser); + char tmpname[1000]; + snprintf(tmpname, sizeof(tmpname), "%s/apt-changelog-XXXXXX", systemTemp.c_str()); + if (NULL == mkdtemp(tmpname)) { - std::string const SandboxUser = _config->Find("APT::Sandbox::User"); - std::string const systemTemp = GetTempDir(SandboxUser); - char tmpname[100]; - snprintf(tmpname, sizeof(tmpname), "%s/apt-changelog-XXXXXX", systemTemp.c_str()); - if (NULL == mkdtemp(tmpname)) + _error->Errno("mkdtemp", "mkdtemp failed in changelog acquire of %s %s", SrcName.c_str(), SrcVersion.c_str()); + Status = StatError; + return; + } + TemporaryDirectory = tmpname; + + ChangeOwnerAndPermissionOfFile("Item::QueueURI", TemporaryDirectory.c_str(), + SandboxUser.c_str(), "root", 0700); + + DestFile = flCombine(TemporaryDirectory, DestFileName); + if (DestDir.empty() == false) + { + d->FinalFile = flCombine(DestDir, DestFileName); + if (RealFileExists(d->FinalFile)) { - _error->Errno("mkdtemp", "mkdtemp failed in changelog acquire of %s %s", SrcName.c_str(), SrcVersion.c_str()); - Status = StatError; - return; + FileFd file1, file2; + if (file1.Open(DestFile, FileFd::WriteOnly | FileFd::Create | FileFd::Exclusive) && + file2.Open(d->FinalFile, FileFd::ReadOnly) && CopyFile(file2, file1)) + { + struct timeval times[2]; + times[0].tv_sec = times[1].tv_sec = file2.ModificationTime(); + times[0].tv_usec = times[1].tv_usec = 0; + utimes(DestFile.c_str(), times); + } } - DestFile = TemporaryDirectory = tmpname; - - ChangeOwnerAndPermissionOfFile("Item::QueueURI", DestFile.c_str(), - SandboxUser.c_str(), "root", 0700); } - else - DestFile = DestDir; - - if (DestFilename.empty()) - DestFile = flCombine(DestFile, SrcName + ".changelog"); - else - DestFile = flCombine(DestFile, DestFilename); Desc.ShortDesc = "Changelog"; strprintf(Desc.Description, "%s %s %s Changelog", URI::SiteOnly(Desc.URI).c_str(), SrcName.c_str(), SrcVersion.c_str()); @@ -3123,16 +3236,47 @@ void pkgAcqChangelog::Init(std::string const &DestDir, std::string const &DestFi /*}}}*/ std::string pkgAcqChangelog::URI(pkgCache::VerIterator const &Ver) /*{{{*/ { + std::string const confOnline = "Acquire::Changelogs::AlwaysOnline"; + bool AlwaysOnline = _config->FindB(confOnline, false); + if (AlwaysOnline == false) + for (pkgCache::VerFileIterator VF = Ver.FileList(); VF.end() == false; ++VF) + { + pkgCache::PkgFileIterator const PF = VF.File(); + if (PF.Flagged(pkgCache::Flag::NotSource) || PF->Release == 0) + continue; + pkgCache::RlsFileIterator const RF = PF.ReleaseFile(); + if (RF->Origin != 0 && _config->FindB(confOnline + "::Origin::" + RF.Origin(), false)) + { + AlwaysOnline = true; + break; + } + } + if (AlwaysOnline == false) + { + pkgCache::PkgIterator const Pkg = Ver.ParentPkg(); + if (Pkg->CurrentVer != 0 && Pkg.CurrentVer() == Ver) + { + std::string const basename = std::string("/usr/share/doc/") + Pkg.Name() + "/changelog"; + std::string const debianname = basename + ".Debian"; + if (FileExists(debianname)) + return "copy://" + debianname; + else if (FileExists(debianname + ".gz")) + return "gzip://" + debianname + ".gz"; + else if (FileExists(basename)) + return "copy://" + basename; + else if (FileExists(basename + ".gz")) + return "gzip://" + basename + ".gz"; + } + } + char const * const SrcName = Ver.SourcePkgName(); char const * const SrcVersion = Ver.SourceVerStr(); - pkgCache::PkgFileIterator PkgFile; // find the first source for this version which promises a changelog for (pkgCache::VerFileIterator VF = Ver.FileList(); VF.end() == false; ++VF) { pkgCache::PkgFileIterator const PF = VF.File(); if (PF.Flagged(pkgCache::Flag::NotSource) || PF->Release == 0) continue; - PkgFile = PF; pkgCache::RlsFileIterator const RF = PF.ReleaseFile(); std::string const uri = URI(RF, PF.Component(), SrcName, SrcVersion); if (uri.empty()) @@ -3229,7 +3373,6 @@ void pkgAcqChangelog::Failed(string const &Message, pkgAcquire::MethodConfig con ErrorText = errText; else ErrorText = errText + " (" + ErrorText + ")"; - return; } /*}}}*/ // AcqChangelog::Done - Item downloaded OK /*{{{*/ @@ -3237,6 +3380,12 @@ void pkgAcqChangelog::Done(string const &Message,HashStringList const &CalcHashe pkgAcquire::MethodConfig const * const Cnf) { Item::Done(Message,CalcHashes,Cnf); + if (d->FinalFile.empty() == false) + { + if (RemoveFile("pkgAcqChangelog::Done", d->FinalFile) == false || + Rename(DestFile, d->FinalFile) == false) + Status = StatError; + } Complete = true; } @@ -3248,6 +3397,7 @@ pkgAcqChangelog::~pkgAcqChangelog() /*{{{*/ RemoveFile("~pkgAcqChangelog", DestFile); rmdir(TemporaryDirectory.c_str()); } + delete d; } /*}}}*/