diff options
Diffstat (limited to 'apt-pkg/acquire-item.cc')
| -rw-r--r-- | apt-pkg/acquire-item.cc | 2974 |
1 files changed, 1738 insertions, 1236 deletions
diff --git a/apt-pkg/acquire-item.cc b/apt-pkg/acquire-item.cc index 605ca7ae4..3313aaabc 100644 --- a/apt-pkg/acquire-item.cc +++ b/apt-pkg/acquire-item.cc @@ -31,6 +31,7 @@ #include <apt-pkg/pkgcache.h> #include <apt-pkg/cacheiterators.h> #include <apt-pkg/pkgrecords.h> +#include <apt-pkg/gpgv.h> #include <stddef.h> #include <stdlib.h> @@ -74,6 +75,11 @@ static std::string GetPartialFileNameFromURI(std::string const &uri) /*{{{*/ return GetPartialFileName(URItoFileName(uri)); } /*}}}*/ +static std::string GetFinalFileNameFromURI(std::string const &uri) /*{{{*/ +{ + return _config->FindDir("Dir::State::lists") + URItoFileName(uri); +} + /*}}}*/ static std::string GetCompressedFileName(std::string const &URI, std::string const &Name, std::string const &Ext) /*{{{*/ { if (Ext.empty() || Ext == "uncompressed") @@ -90,6 +96,19 @@ static std::string GetCompressedFileName(std::string const &URI, std::string con return Name; } /*}}}*/ +static std::string GetMergeDiffsPatchFileName(std::string const &Final, std::string const &Patch)/*{{{*/ +{ + // rred expects the patch as $FinalFile.ed.$patchname.gz + return Final + ".ed." + Patch + ".gz"; +} + /*}}}*/ +static std::string GetDiffsPatchFileName(std::string const &Final) /*{{{*/ +{ + // rred expects the patch as $FinalFile.ed + return Final + ".ed"; +} + /*}}}*/ + static bool AllowInsecureRepositories(indexRecords const * const MetaIndexParser, pkgAcqMetaBase * const TransactionManager, pkgAcquire::Item * const I) /*{{{*/ { if(MetaIndexParser->IsAlwaysTrusted() || _config->FindB("Acquire::AllowInsecureRepositories") == true) @@ -101,42 +120,339 @@ static bool AllowInsecureRepositories(indexRecords const * const MetaIndexParser return false; } /*}}}*/ +static HashStringList GetExpectedHashesFromFor(indexRecords * const Parser, std::string const MetaKey)/*{{{*/ +{ + if (Parser == NULL) + return HashStringList(); + indexRecords::checkSum * const R = Parser->Lookup(MetaKey); + if (R == NULL) + return HashStringList(); + return R->Hashes; +} + /*}}}*/ + +// all ::HashesRequired and ::GetExpectedHashes implementations /*{{{*/ +/* ::GetExpectedHashes is abstract and has to be implemented by all subclasses. + It is best to implement it as broadly as possible, while ::HashesRequired defaults + to true and should be as restrictive as possible for false cases. Note that if + a hash is returned by ::GetExpectedHashes it must match. Only if it doesn't + ::HashesRequired is called to evaluate if its okay to have no hashes. */ +APT_CONST bool pkgAcqTransactionItem::HashesRequired() const +{ + /* signed repositories obviously have a parser and good hashes. + unsigned repositories, too, as even if we can't trust them for security, + we can at least trust them for integrity of the download itself. + Only repositories without a Release file can (obviously) not have + hashes – and they are very uncommon and strongly discouraged */ + return TransactionManager->MetaIndexParser != NULL; +} +HashStringList pkgAcqTransactionItem::GetExpectedHashes() const +{ + return GetExpectedHashesFor(GetMetaKey()); +} + +APT_CONST bool pkgAcqMetaBase::HashesRequired() const +{ + // Release and co have no hashes 'by design'. + return false; +} +HashStringList pkgAcqMetaBase::GetExpectedHashes() const +{ + return HashStringList(); +} + +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. */ + if (State == StateFetchDiff) + return available_patches[0].download_hashes.empty() == false; + return false; +} +HashStringList pkgAcqIndexDiffs::GetExpectedHashes() const +{ + if (State == StateFetchDiff) + return available_patches[0].download_hashes; + return HashStringList(); +} + +APT_CONST bool pkgAcqIndexMergeDiffs::HashesRequired() const +{ + /* @see #pkgAcqIndexDiffs::HashesRequired, with the difference that + 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 State == StateApplyDiff; +} +HashStringList pkgAcqIndexMergeDiffs::GetExpectedHashes() const +{ + if (State == StateFetchDiff) + return patch.download_hashes; + else if (State == StateApplyDiff) + return GetExpectedHashesFor(Target.MetaKey); + return HashStringList(); +} + +APT_CONST bool pkgAcqArchive::HashesRequired() const +{ + return LocalSource == false; +} +HashStringList pkgAcqArchive::GetExpectedHashes() const +{ + // figured out while parsing the records + return ExpectedHashes; +} + +APT_CONST bool pkgAcqFile::HashesRequired() const +{ + // supplied as parameter at creation time, so the caller decides + return ExpectedHashes.usable(); +} +HashStringList pkgAcqFile::GetExpectedHashes() const +{ + return ExpectedHashes; +} + /*}}}*/ +// Acquire::Item::QueueURI and specialisations from child classes /*{{{*/ +bool pkgAcquire::Item::QueueURI(pkgAcquire::ItemDesc &Item) +{ + Owner->Enqueue(Item); + return true; +} +/* The idea here is that an item isn't queued if it exists on disk and the + transition manager was a hit as this means that the files it contains + the checksums for can't be updated either (or they are and we are asking + for a hashsum mismatch to happen which helps nobody) */ +bool pkgAcqTransactionItem::QueueURI(pkgAcquire::ItemDesc &Item) +{ + std::string const FinalFile = GetFinalFilename(); + if (TransactionManager != NULL && TransactionManager->IMSHit == true && + FileExists(FinalFile) == true) + { + PartialFile = DestFile = FinalFile; + Status = StatDone; + return false; + } + return pkgAcquire::Item::QueueURI(Item); +} +/* The transition manager InRelease itself (or its older sisters-in-law + Release & Release.gpg) is always queued as this allows us to rerun gpgv + on it to verify that we aren't stalled with old files */ +bool pkgAcqMetaBase::QueueURI(pkgAcquire::ItemDesc &Item) +{ + return pkgAcquire::Item::QueueURI(Item); +} +/* the Diff/Index needs to queue also the up-to-date complete index file + to ensure that the list cleaner isn't eating it */ +bool pkgAcqDiffIndex::QueueURI(pkgAcquire::ItemDesc &Item) +{ + if (pkgAcqTransactionItem::QueueURI(Item) == true) + return true; + QueueOnIMSHit(); + return false; +} + /*}}}*/ +// Acquire::Item::GetFinalFilename and specialisations for child classes /*{{{*/ +std::string pkgAcquire::Item::GetFinalFilename() const +{ + 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(); +} +std::string pkgAcqIndex::GetFinalFilename() const +{ + std::string const FinalFile = GetFinalFileNameFromURI(Target.URI); + return GetCompressedFileName(Target.URI, FinalFile, CurrentCompressionExtension); +} +std::string pkgAcqMetaSig::GetFinalFilename() const +{ + return GetFinalFileNameFromURI(Target.URI); +} +std::string pkgAcqBaseIndex::GetFinalFilename() const +{ + return GetFinalFileNameFromURI(Target.URI); +} +std::string pkgAcqMetaBase::GetFinalFilename() const +{ + return GetFinalFileNameFromURI(Target.URI); +} +std::string pkgAcqArchive::GetFinalFilename() const +{ + return _config->FindDir("Dir::Cache::Archives") + flNotDir(StoreFilename); +} + /*}}}*/ +// pkgAcqTransactionItem::GetMetaKey and specialisations for child classes /*{{{*/ +std::string pkgAcqTransactionItem::GetMetaKey() const +{ + return Target.MetaKey; +} +std::string pkgAcqIndex::GetMetaKey() const +{ + if (Stage == STAGE_DECOMPRESS_AND_VERIFY || CurrentCompressionExtension == "uncompressed") + return Target.MetaKey; + return Target.MetaKey + "." + CurrentCompressionExtension; +} +std::string pkgAcqDiffIndex::GetMetaKey() const +{ + return Target.MetaKey + ".diff/Index"; +} + /*}}}*/ +//pkgAcqTransactionItem::TransactionState and specialisations for child classes /*{{{*/ +bool pkgAcqTransactionItem::TransactionState(TransactionStates const state) +{ + bool const Debug = _config->FindB("Debug::Acquire::Transaction", false); + switch(state) + { + case TransactionAbort: + if(Debug == true) + std::clog << " Cancel: " << DestFile << std::endl; + if (Status == pkgAcquire::Item::StatIdle) + { + Status = pkgAcquire::Item::StatDone; + Dequeue(); + } + break; + case TransactionCommit: + if(PartialFile != "") + { + if(Debug == true) + std::clog << "mv " << PartialFile << " -> "<< DestFile << " # " << DescURI() << std::endl; + + Rename(PartialFile, DestFile); + } else { + if(Debug == true) + std::clog << "rm " << DestFile << " # " << DescURI() << std::endl; + unlink(DestFile.c_str()); + } + break; + } + return true; +} +bool pkgAcqMetaBase::TransactionState(TransactionStates const state) +{ + // Do not remove InRelease on IMSHit of Release.gpg [yes, this is very edgecasey] + if (TransactionManager->IMSHit == false) + return pkgAcqTransactionItem::TransactionState(state); + return true; +} +bool pkgAcqIndex::TransactionState(TransactionStates const state) +{ + if (pkgAcqTransactionItem::TransactionState(state) == false) + return false; + + switch (state) + { + 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") + unlink(PartialFile.c_str()); + } + break; + case TransactionCommit: + if (EraseFileName.empty() == false) + unlink(EraseFileName.c_str()); + break; + } + return true; +} +bool pkgAcqDiffIndex::TransactionState(TransactionStates const state) +{ + if (pkgAcqTransactionItem::TransactionState(state) == false) + return false; + + switch (state) + { + case TransactionCommit: + break; + case TransactionAbort: + std::string const Partial = GetPartialFileNameFromURI(Target.URI); + unlink(Partial.c_str()); + break; + } + + return true; +} + /*}}}*/ +class APT_HIDDEN NoActionItem : public pkgAcquire::Item /*{{{*/ +/* The sole purpose of this class is having an item which does nothing to + reach its done state to prevent cleanup deleting the mentioned file. + Handy in cases in which we know we have the file already, like IMS-Hits. */ +{ + IndexTarget const Target; + public: + virtual std::string DescURI() const {return Target.URI;}; + virtual HashStringList GetExpectedHashes() const {return HashStringList();}; + + NoActionItem(pkgAcquire * const Owner, IndexTarget const Target) : + pkgAcquire::Item(Owner), Target(Target) + { + Status = StatDone; + DestFile = GetFinalFileNameFromURI(Target.URI); + } +}; + /*}}}*/ // Acquire::Item::Item - Constructor /*{{{*/ -#if __GNUC__ >= 4 - #pragma GCC diagnostic push - #pragma GCC diagnostic ignored "-Wdeprecated-declarations" -#endif -pkgAcquire::Item::Item(pkgAcquire *Owner, - HashStringList const &ExpectedHashes, - pkgAcqMetaBase *TransactionManager) - : Owner(Owner), FileSize(0), PartialSize(0), Mode(0), ID(0), Complete(false), - Local(false), QueueCounter(0), TransactionManager(TransactionManager), - ExpectedAdditionalItems(0), ExpectedHashes(ExpectedHashes) +APT_IGNORE_DEPRECATED_PUSH +pkgAcquire::Item::Item(pkgAcquire * const Owner) : + FileSize(0), PartialSize(0), Mode(0), ID(0), Complete(false), Local(false), + QueueCounter(0), ExpectedAdditionalItems(0), Owner(Owner) { Owner->Add(this); Status = StatIdle; - if(TransactionManager != NULL) - TransactionManager->Add(this); } -#if __GNUC__ >= 4 - #pragma GCC diagnostic pop -#endif +APT_IGNORE_DEPRECATED_POP /*}}}*/ // Acquire::Item::~Item - Destructor /*{{{*/ -// --------------------------------------------------------------------- -/* */ pkgAcquire::Item::~Item() { Owner->Remove(this); } /*}}}*/ +std::string pkgAcquire::Item::Custom600Headers() const /*{{{*/ +{ + return std::string(); +} + /*}}}*/ +std::string pkgAcquire::Item::ShortDesc() const /*{{{*/ +{ + return DescURI(); +} + /*}}}*/ +APT_CONST void pkgAcquire::Item::Finished() /*{{{*/ +{ +} + /*}}}*/ +APT_PURE pkgAcquire * pkgAcquire::Item::GetOwner() const /*{{{*/ +{ + return Owner; +} + /*}}}*/ +APT_CONST pkgAcquire::ItemDesc &pkgAcquire::Item::GetItemDesc() /*{{{*/ +{ + return Desc; +} + /*}}}*/ +APT_CONST bool pkgAcquire::Item::IsTrusted() const /*{{{*/ +{ + return false; +} + /*}}}*/ // Acquire::Item::Failed - Item failed to download /*{{{*/ // --------------------------------------------------------------------- /* We return to an idle state if there are still other queues that could fetch this object */ -void pkgAcquire::Item::Failed(string Message,pkgAcquire::MethodConfig *Cnf) +void pkgAcquire::Item::Failed(string const &Message,pkgAcquire::MethodConfig const * const Cnf) { if(ErrorText.empty()) ErrorText = LookupTag(Message,"Message"); @@ -154,30 +470,43 @@ void pkgAcquire::Item::Failed(string Message,pkgAcquire::MethodConfig *Cnf) return; } - Status = StatError; + switch (Status) + { + case StatIdle: + case StatFetching: + case StatDone: + Status = StatError; + break; + case StatAuthError: + case StatError: + case StatTransientNetworkError: + break; + } Complete = false; Dequeue(); } - else - Status = StatIdle; - // check fail reason string const FailReason = LookupTag(Message, "FailReason"); - if(FailReason == "MaximumSizeExceeded") + if (FailReason == "MaximumSizeExceeded") RenameOnError(MaximumSizeExceeded); + else if (Status == StatAuthError) + RenameOnError(HashSumMismatch); // report mirror failure back to LP if we actually use a mirror - if(FailReason.size() != 0) + if (FailReason.empty() == false) ReportMirrorFailure(FailReason); else ReportMirrorFailure(ErrorText); + + if (QueueCounter > 1) + Status = StatIdle; } /*}}}*/ // Acquire::Item::Start - Item has begun to download /*{{{*/ // --------------------------------------------------------------------- -/* Stash status and the file size. Note that setting Complete means +/* Stash status and the file size. Note that setting Complete means sub-phases of the acquire process such as decompresion are operating */ -void pkgAcquire::Item::Start(string /*Message*/,unsigned long long Size) +void pkgAcquire::Item::Start(string const &/*Message*/, unsigned long long const Size) { Status = StatFetching; ErrorText.clear(); @@ -186,22 +515,19 @@ void pkgAcquire::Item::Start(string /*Message*/,unsigned long long Size) } /*}}}*/ // Acquire::Item::Done - Item downloaded OK /*{{{*/ -// --------------------------------------------------------------------- -/* */ -void pkgAcquire::Item::Done(string Message,unsigned long long Size,HashStringList const &/*Hash*/, - pkgAcquire::MethodConfig * /*Cnf*/) +void pkgAcquire::Item::Done(string const &Message, HashStringList const &Hashes, + pkgAcquire::MethodConfig const * const /*Cnf*/) { // We just downloaded something.. - string FileName = LookupTag(Message,"Filename"); UsedMirror = LookupTag(Message,"UsedMirror"); - if (Complete == false && !Local && FileName == DestFile) + if (FileSize == 0) { - if (Owner->Log != 0) - Owner->Log->Fetched(Size,atoi(LookupTag(Message,"Resume-Point","0").c_str())); + unsigned long long const downloadedSize = Hashes.FileSize(); + if (downloadedSize != 0) + { + FileSize = downloadedSize; + } } - - if (FileSize == 0) - FileSize= Size; Status = StatDone; ErrorText = string(); Owner->Dequeue(this); @@ -211,24 +537,22 @@ void pkgAcquire::Item::Done(string Message,unsigned long long Size,HashStringLis // --------------------------------------------------------------------- /* This helper function is used by a lot of item methods as their final step */ -bool pkgAcquire::Item::Rename(string From,string To) +bool pkgAcquire::Item::Rename(string const &From,string const &To) { - if (rename(From.c_str(),To.c_str()) == 0) + if (From == To || rename(From.c_str(),To.c_str()) == 0) return true; std::string S; strprintf(S, _("rename failed, %s (%s -> %s)."), strerror(errno), From.c_str(),To.c_str()); Status = StatError; - ErrorText += S; + if (ErrorText.empty()) + ErrorText = S; + else + ErrorText = ErrorText + ": " + S; return false; } /*}}}*/ -void pkgAcquire::Item::QueueURI(ItemDesc &Item) /*{{{*/ -{ - Owner->Enqueue(Item); -} - /*}}}*/ void pkgAcquire::Item::Dequeue() /*{{{*/ { Owner->Dequeue(this); @@ -239,55 +563,53 @@ bool pkgAcquire::Item::RenameOnError(pkgAcquire::Item::RenameOnErrorState const if (RealFileExists(DestFile)) Rename(DestFile, DestFile + ".FAILED"); + std::string errtext; switch (error) { case HashSumMismatch: - ErrorText = _("Hash Sum mismatch"); + errtext = _("Hash Sum mismatch"); Status = StatAuthError; ReportMirrorFailure("HashChecksumFailure"); break; case SizeMismatch: - ErrorText = _("Size mismatch"); + errtext = _("Size mismatch"); Status = StatAuthError; ReportMirrorFailure("SizeFailure"); break; case InvalidFormat: - ErrorText = _("Invalid file format"); + errtext = _("Invalid file format"); Status = StatError; // do not report as usually its not the mirrors fault, but Portal/Proxy break; case SignatureError: - ErrorText = _("Signature error"); + errtext = _("Signature error"); Status = StatError; break; case NotClearsigned: - ErrorText = _("Does not start with a cleartext signature"); + errtext = _("Does not start with a cleartext signature"); Status = StatError; break; case MaximumSizeExceeded: // the method is expected to report a good error for this Status = StatError; break; + case PDiffError: + // no handling here, done by callers + break; } + if (ErrorText.empty()) + ErrorText = errtext; return false; } /*}}}*/ void pkgAcquire::Item::SetActiveSubprocess(const std::string &subprocess)/*{{{*/ { ActiveSubprocess = subprocess; -#if __GNUC__ >= 4 - #pragma GCC diagnostic push - #pragma GCC diagnostic ignored "-Wdeprecated-declarations" -#endif - Mode = ActiveSubprocess.c_str(); -#if __GNUC__ >= 4 - #pragma GCC diagnostic pop -#endif + APT_IGNORE_DEPRECATED(Mode = ActiveSubprocess.c_str();) } /*}}}*/ // Acquire::Item::ReportMirrorFailure /*{{{*/ -// --------------------------------------------------------------------- -void pkgAcquire::Item::ReportMirrorFailure(string FailCode) +void pkgAcquire::Item::ReportMirrorFailure(string const &FailCode) { // we only act if a mirror was used at all if(UsedMirror.empty()) @@ -330,6 +652,849 @@ void pkgAcquire::Item::ReportMirrorFailure(string FailCode) } } /*}}}*/ +std::string pkgAcquire::Item::HashSum() const /*{{{*/ +{ + HashStringList const hashes = GetExpectedHashes(); + HashString const * const hs = hashes.find(NULL); + return hs != NULL ? hs->toStr() : ""; +} + /*}}}*/ + +pkgAcqTransactionItem::pkgAcqTransactionItem(pkgAcquire * const Owner, /*{{{*/ + pkgAcqMetaBase * const TransactionManager, IndexTarget const Target) : + pkgAcquire::Item(Owner), Target(Target), TransactionManager(TransactionManager) +{ + if (TransactionManager != this) + TransactionManager->Add(this); +} + /*}}}*/ +pkgAcqTransactionItem::~pkgAcqTransactionItem() /*{{{*/ +{ +} + /*}}}*/ +HashStringList pkgAcqTransactionItem::GetExpectedHashesFor(std::string const MetaKey) const /*{{{*/ +{ + return GetExpectedHashesFromFor(TransactionManager->MetaIndexParser, MetaKey); +} + /*}}}*/ + +// AcqMetaBase - Constructor /*{{{*/ +pkgAcqMetaBase::pkgAcqMetaBase(pkgAcquire * const Owner, + pkgAcqMetaBase * const TransactionManager, + std::vector<IndexTarget> const IndexTargets, + IndexTarget const &DataTarget, + indexRecords * const MetaIndexParser) +: pkgAcqTransactionItem(Owner, TransactionManager, DataTarget), + MetaIndexParser(MetaIndexParser), LastMetaIndexParser(NULL), IndexTargets(IndexTargets), + AuthPass(false), IMSHit(false) +{ +} + /*}}}*/ +// AcqMetaBase::Add - Add a item to the current Transaction /*{{{*/ +void pkgAcqMetaBase::Add(pkgAcqTransactionItem * const I) +{ + Transaction.push_back(I); +} + /*}}}*/ +// AcqMetaBase::AbortTransaction - Abort the current Transaction /*{{{*/ +void pkgAcqMetaBase::AbortTransaction() +{ + if(_config->FindB("Debug::Acquire::Transaction", false) == true) + std::clog << "AbortTransaction: " << TransactionManager << std::endl; + + // ensure the toplevel is in error state too + for (std::vector<pkgAcqTransactionItem*>::iterator I = Transaction.begin(); + I != Transaction.end(); ++I) + { + (*I)->TransactionState(TransactionAbort); + } + Transaction.clear(); +} + /*}}}*/ +// AcqMetaBase::TransactionHasError - Check for errors in Transaction /*{{{*/ +APT_PURE bool pkgAcqMetaBase::TransactionHasError() const +{ + for (std::vector<pkgAcqTransactionItem*>::const_iterator I = Transaction.begin(); + I != Transaction.end(); ++I) + { + switch((*I)->Status) { + case StatDone: break; + case StatIdle: break; + case StatAuthError: return true; + case StatError: return true; + case StatTransientNetworkError: return true; + case StatFetching: break; + } + } + return false; +} + /*}}}*/ +// AcqMetaBase::CommitTransaction - Commit a transaction /*{{{*/ +void pkgAcqMetaBase::CommitTransaction() +{ + if(_config->FindB("Debug::Acquire::Transaction", false) == true) + std::clog << "CommitTransaction: " << this << std::endl; + + // move new files into place *and* remove files that are not + // part of the transaction but are still on disk + for (std::vector<pkgAcqTransactionItem*>::iterator I = Transaction.begin(); + I != Transaction.end(); ++I) + { + (*I)->TransactionState(TransactionCommit); + } + Transaction.clear(); +} + /*}}}*/ +// AcqMetaBase::TransactionStageCopy - Stage a file for copying /*{{{*/ +void pkgAcqMetaBase::TransactionStageCopy(pkgAcqTransactionItem * const I, + const std::string &From, + const std::string &To) +{ + I->PartialFile = From; + I->DestFile = To; +} + /*}}}*/ +// AcqMetaBase::TransactionStageRemoval - Stage a file for removal /*{{{*/ +void pkgAcqMetaBase::TransactionStageRemoval(pkgAcqTransactionItem * const I, + const std::string &FinalFile) +{ + I->PartialFile = ""; + I->DestFile = FinalFile; +} + /*}}}*/ +// AcqMetaBase::GenerateAuthWarning - Check gpg authentication error /*{{{*/ +bool pkgAcqMetaBase::CheckStopAuthentication(pkgAcquire::Item * const I, const std::string &Message) +{ + // FIXME: this entire function can do now that we disallow going to + // a unauthenticated state and can cleanly rollback + + string const Final = I->GetFinalFilename(); + if(FileExists(Final)) + { + I->Status = StatTransientNetworkError; + _error->Warning(_("An error occurred during the signature " + "verification. The repository is not updated " + "and the previous index files will be used. " + "GPG error: %s: %s\n"), + Desc.Description.c_str(), + LookupTag(Message,"Message").c_str()); + RunScripts("APT::Update::Auth-Failure"); + return true; + } else if (LookupTag(Message,"Message").find("NODATA") != string::npos) { + /* Invalid signature file, reject (LP: #346386) (Closes: #627642) */ + _error->Error(_("GPG error: %s: %s"), + Desc.Description.c_str(), + LookupTag(Message,"Message").c_str()); + I->Status = StatError; + return true; + } else { + _error->Warning(_("GPG error: %s: %s"), + Desc.Description.c_str(), + LookupTag(Message,"Message").c_str()); + } + // gpgv method failed + ReportMirrorFailure("GPGFailure"); + return false; +} + /*}}}*/ +// AcqMetaBase::Custom600Headers - Get header for AcqMetaBase /*{{{*/ +// --------------------------------------------------------------------- +string pkgAcqMetaBase::Custom600Headers() const +{ + std::string Header = "\nIndex-File: true"; + std::string MaximumSize; + strprintf(MaximumSize, "\nMaximum-Size: %i", + _config->FindI("Acquire::MaxReleaseFileSize", 10*1000*1000)); + Header += MaximumSize; + + string const FinalFile = GetFinalFilename(); + + struct stat Buf; + if (stat(FinalFile.c_str(),&Buf) == 0) + Header += "\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); + + return Header; +} + /*}}}*/ +// AcqMetaBase::QueueForSignatureVerify /*{{{*/ +void pkgAcqMetaBase::QueueForSignatureVerify(pkgAcqTransactionItem * const I, std::string const &File, std::string const &Signature) +{ + AuthPass = true; + I->Desc.URI = "gpgv:" + Signature; + I->DestFile = File; + QueueURI(I->Desc); + I->SetActiveSubprocess("gpgv"); +} + /*}}}*/ +// AcqMetaBase::CheckDownloadDone /*{{{*/ +bool pkgAcqMetaBase::CheckDownloadDone(pkgAcqTransactionItem * const I, const std::string &Message, HashStringList const &Hashes) const +{ + // We have just finished downloading a Release file (it is not + // verified yet) + + string const FileName = LookupTag(Message,"Filename"); + if (FileName.empty() == true) + { + I->Status = StatError; + I->ErrorText = "Method gave a blank filename"; + return false; + } + + if (FileName != I->DestFile && RealFileExists(I->DestFile) == false) + { + I->Local = true; + I->Desc.URI = "copy:" + FileName; + I->QueueURI(I->Desc); + return false; + } + + // make sure to verify against the right file on I-M-S hit + bool IMSHit = StringToBool(LookupTag(Message,"IMS-Hit"), false); + if (IMSHit == false && Hashes.usable()) + { + // detect IMS-Hits servers haven't detected by Hash comparison + std::string const FinalFile = I->GetFinalFilename(); + if (RealFileExists(FinalFile) && Hashes.VerifyFile(FinalFile) == true) + { + IMSHit = true; + unlink(I->DestFile.c_str()); + } + } + + if(IMSHit == true) + { + // for simplicity, the transaction manager is always InRelease + // even if it doesn't exist. + if (TransactionManager != NULL) + TransactionManager->IMSHit = true; + I->PartialFile = I->DestFile = I->GetFinalFilename(); + } + + // set Item to complete as the remaining work is all local (verify etc) + I->Complete = true; + + return true; +} + /*}}}*/ +bool pkgAcqMetaBase::CheckAuthDone(string const &Message) /*{{{*/ +{ + // At this point, the gpgv method has succeeded, so there is a + // valid signature from a key in the trusted keyring. We + // perform additional verification of its contents, and use them + // to verify the indexes we are about to download + + if (TransactionManager->IMSHit == false) + { + // open the last (In)Release if we have it + std::string const FinalFile = GetFinalFilename(); + std::string FinalRelease; + std::string FinalInRelease; + if (APT::String::Endswith(FinalFile, "InRelease")) + { + FinalInRelease = FinalFile; + FinalRelease = FinalFile.substr(0, FinalFile.length() - strlen("InRelease")) + "Release"; + } + else + { + FinalInRelease = FinalFile.substr(0, FinalFile.length() - strlen("Release")) + "InRelease"; + FinalRelease = FinalFile; + } + if (RealFileExists(FinalInRelease) || RealFileExists(FinalRelease)) + { + TransactionManager->LastMetaIndexParser = new indexRecords; + _error->PushToStack(); + if (RealFileExists(FinalInRelease)) + TransactionManager->LastMetaIndexParser->Load(FinalInRelease); + else + TransactionManager->LastMetaIndexParser->Load(FinalRelease); + // its unlikely to happen, but if what we have is bad ignore it + if (_error->PendingError()) + { + delete TransactionManager->LastMetaIndexParser; + TransactionManager->LastMetaIndexParser = NULL; + } + _error->RevertToStack(); + } + } + + if (TransactionManager->MetaIndexParser->Load(DestFile) == false) + { + Status = StatAuthError; + ErrorText = TransactionManager->MetaIndexParser->ErrorText; + return false; + } + + if (!VerifyVendor(Message)) + { + Status = StatAuthError; + return false; + } + + if (_config->FindB("Debug::pkgAcquire::Auth", false)) + std::cerr << "Signature verification succeeded: " + << DestFile << std::endl; + + // Download further indexes with verification + QueueIndexes(true); + + return true; +} + /*}}}*/ +void pkgAcqMetaBase::QueueIndexes(bool const verify) /*{{{*/ +{ + // at this point the real Items are loaded in the fetcher + ExpectedAdditionalItems = 0; + + for (std::vector <IndexTarget>::const_iterator Target = IndexTargets.begin(); + Target != IndexTargets.end(); + ++Target) + { + bool trypdiff = _config->FindB("Acquire::PDiffs", true); + if (verify == true) + { + if (TransactionManager->MetaIndexParser->Exists(Target->MetaKey) == false) + { + // optional targets that we do not have in the Release file are skipped + if (Target->IsOptional) + continue; + + Status = StatAuthError; + strprintf(ErrorText, _("Unable to find expected entry '%s' in Release file (Wrong sources.list entry or malformed file)"), Target->MetaKey.c_str()); + return; + } + + if (RealFileExists(GetFinalFileNameFromURI(Target->URI))) + { + if (TransactionManager->LastMetaIndexParser != NULL) + { + HashStringList const newFile = GetExpectedHashesFromFor(TransactionManager->MetaIndexParser, Target->MetaKey); + HashStringList const oldFile = GetExpectedHashesFromFor(TransactionManager->LastMetaIndexParser, Target->MetaKey); + if (newFile == oldFile) + { + // we have the file already, no point in trying to acquire it again + new NoActionItem(Owner, *Target); + continue; + } + } + } + else + trypdiff = false; // no file to patch + + // check if we have patches available + trypdiff &= TransactionManager->MetaIndexParser->Exists(Target->MetaKey + ".diff/Index"); + } + // if we have no file to patch, no point in trying + trypdiff &= RealFileExists(GetFinalFileNameFromURI(Target->URI)); + + // no point in patching from local sources + if (trypdiff) + { + std::string const proto = Target->URI.substr(0, strlen("file:/")); + if (proto == "file:/" || proto == "copy:/" || proto == "cdrom:") + trypdiff = false; + } + + // Queue the Index file (Packages, Sources, Translation-$foo, …) + if (trypdiff) + new pkgAcqDiffIndex(Owner, TransactionManager, *Target); + else + new pkgAcqIndex(Owner, TransactionManager, *Target); + } +} + /*}}}*/ +bool pkgAcqMetaBase::VerifyVendor(string const &Message) /*{{{*/ +{ + string::size_type pos; + + // check for missing sigs (that where not fatal because otherwise we had + // bombed earlier) + string missingkeys; + string msg = _("There is no public key available for the " + "following key IDs:\n"); + pos = Message.find("NO_PUBKEY "); + if (pos != std::string::npos) + { + string::size_type start = pos+strlen("NO_PUBKEY "); + string Fingerprint = Message.substr(start, Message.find("\n")-start); + missingkeys += (Fingerprint); + } + if(!missingkeys.empty()) + _error->Warning("%s", (msg + missingkeys).c_str()); + + string Transformed = TransactionManager->MetaIndexParser->GetExpectedDist(); + + if (Transformed == "../project/experimental") + { + Transformed = "experimental"; + } + + pos = Transformed.rfind('/'); + if (pos != string::npos) + { + Transformed = Transformed.substr(0, pos); + } + + if (Transformed == ".") + { + Transformed = ""; + } + + if (_config->FindB("Acquire::Check-Valid-Until", true) == true && + TransactionManager->MetaIndexParser->GetValidUntil() > 0) { + time_t const invalid_since = time(NULL) - TransactionManager->MetaIndexParser->GetValidUntil(); + if (invalid_since > 0) + { + std::string errmsg; + strprintf(errmsg, + // TRANSLATOR: The first %s is the URL of the bad Release file, the second is + // the time since then the file is invalid - formated in the same way as in + // the download progress display (e.g. 7d 3h 42min 1s) + _("Release file for %s is expired (invalid since %s). " + "Updates for this repository will not be applied."), + Target.URI.c_str(), TimeToStr(invalid_since).c_str()); + if (ErrorText.empty()) + ErrorText = errmsg; + return _error->Error("%s", errmsg.c_str()); + } + } + + /* Did we get a file older than what we have? This is a last minute IMS hit and doubles + as a prevention of downgrading us to older (still valid) files */ + if (TransactionManager->IMSHit == false && TransactionManager->LastMetaIndexParser != NULL && + TransactionManager->LastMetaIndexParser->GetDate() > TransactionManager->MetaIndexParser->GetDate()) + { + TransactionManager->IMSHit = true; + unlink(DestFile.c_str()); + PartialFile = DestFile = GetFinalFilename(); + delete TransactionManager->MetaIndexParser; + TransactionManager->MetaIndexParser = TransactionManager->LastMetaIndexParser; + TransactionManager->LastMetaIndexParser = NULL; + } + + if (_config->FindB("Debug::pkgAcquire::Auth", false)) + { + std::cerr << "Got Codename: " << TransactionManager->MetaIndexParser->GetDist() << std::endl; + std::cerr << "Expecting Dist: " << TransactionManager->MetaIndexParser->GetExpectedDist() << std::endl; + std::cerr << "Transformed Dist: " << Transformed << std::endl; + } + + if (TransactionManager->MetaIndexParser->CheckDist(Transformed) == false) + { + // This might become fatal one day +// Status = StatAuthError; +// ErrorText = "Conflicting distribution; expected " +// + MetaIndexParser->GetExpectedDist() + " but got " +// + MetaIndexParser->GetDist(); +// return false; + if (!Transformed.empty()) + { + _error->Warning(_("Conflicting distribution: %s (expected %s but got %s)"), + Desc.Description.c_str(), + Transformed.c_str(), + TransactionManager->MetaIndexParser->GetDist().c_str()); + } + } + + return true; +} + /*}}}*/ +pkgAcqMetaBase::~pkgAcqMetaBase() {} + +pkgAcqMetaClearSig::pkgAcqMetaClearSig(pkgAcquire * const Owner, /*{{{*/ + IndexTarget const &ClearsignedTarget, + IndexTarget const &DetachedDataTarget, IndexTarget const &DetachedSigTarget, + std::vector<IndexTarget> const IndexTargets, + indexRecords * const MetaIndexParser) : + pkgAcqMetaIndex(Owner, this, ClearsignedTarget, DetachedSigTarget, IndexTargets, MetaIndexParser), + ClearsignedTarget(ClearsignedTarget), + DetachedDataTarget(DetachedDataTarget), DetachedSigTarget(DetachedSigTarget) +{ + // index targets + (worst case:) Release/Release.gpg + ExpectedAdditionalItems = IndexTargets.size() + 2; + TransactionManager->Add(this); +} + /*}}}*/ +pkgAcqMetaClearSig::~pkgAcqMetaClearSig() /*{{{*/ +{ +} + /*}}}*/ +// pkgAcqMetaClearSig::Custom600Headers - Insert custom request headers /*{{{*/ +string pkgAcqMetaClearSig::Custom600Headers() const +{ + string Header = pkgAcqMetaBase::Custom600Headers(); + Header += "\nFail-Ignore: true"; + return Header; +} + /*}}}*/ +// pkgAcqMetaClearSig::Done - We got a file /*{{{*/ +void pkgAcqMetaClearSig::Done(std::string const &Message, + HashStringList const &Hashes, + pkgAcquire::MethodConfig const * const Cnf) +{ + Item::Done(Message, Hashes, Cnf); + + // if we expect a ClearTextSignature (InRelease), ensure that + // this is what we get and if not fail to queue a + // Release/Release.gpg, see #346386 + if (FileExists(DestFile) && !StartsWithGPGClearTextSignature(DestFile)) + { + pkgAcquire::Item::Failed(Message, Cnf); + RenameOnError(NotClearsigned); + TransactionManager->AbortTransaction(); + return; + } + + if(AuthPass == false) + { + if(CheckDownloadDone(this, Message, Hashes) == true) + QueueForSignatureVerify(this, DestFile, DestFile); + return; + } + else if(CheckAuthDone(Message) == true) + { + if (TransactionManager->IMSHit == false) + TransactionManager->TransactionStageCopy(this, DestFile, GetFinalFilename()); + else if (RealFileExists(GetFinalFilename()) == false) + { + // We got an InRelease file IMSHit, but we haven't one, which means + // we had a valid Release/Release.gpg combo stepping in, which we have + // to 'acquire' now to ensure list cleanup isn't removing them + new NoActionItem(Owner, DetachedDataTarget); + new NoActionItem(Owner, DetachedSigTarget); + } + } +} + /*}}}*/ +void pkgAcqMetaClearSig::Failed(string const &Message,pkgAcquire::MethodConfig const * const Cnf) /*{{{*/ +{ + Item::Failed(Message, Cnf); + + // we failed, we will not get additional items from this method + ExpectedAdditionalItems = 0; + + if (AuthPass == false) + { + // Queue the 'old' InRelease file for removal if we try Release.gpg + // as otherwise the file will stay around and gives a false-auth + // impression (CVE-2012-0214) + TransactionManager->TransactionStageRemoval(this, GetFinalFilename()); + Status = StatDone; + + new pkgAcqMetaIndex(Owner, TransactionManager, DetachedDataTarget, DetachedSigTarget, IndexTargets, TransactionManager->MetaIndexParser); + } + else + { + if(CheckStopAuthentication(this, Message)) + return; + + _error->Warning(_("The data from '%s' is not signed. Packages " + "from that repository can not be authenticated."), + ClearsignedTarget.Description.c_str()); + + // No Release file was present, or verification failed, so fall + // back to queueing Packages files without verification + // only allow going further if the users explicitely wants it + if(AllowInsecureRepositories(TransactionManager->MetaIndexParser, TransactionManager, this) == true) + { + Status = StatDone; + + /* InRelease files become Release files, otherwise + * they would be considered as trusted later on */ + string const FinalRelease = GetFinalFileNameFromURI(DetachedDataTarget.URI); + string const PartialRelease = GetPartialFileNameFromURI(DetachedDataTarget.URI); + string const FinalReleasegpg = GetFinalFileNameFromURI(DetachedSigTarget.URI); + 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 = new indexRecords; + _error->PushToStack(); + if (RealFileExists(FinalInRelease)) + TransactionManager->LastMetaIndexParser->Load(FinalInRelease); + else + TransactionManager->LastMetaIndexParser->Load(FinalRelease); + // its unlikely to happen, but if what we have is bad ignore it + if (_error->PendingError()) + { + delete TransactionManager->LastMetaIndexParser; + TransactionManager->LastMetaIndexParser = NULL; + } + _error->RevertToStack(); + } + } + + // we parse the indexes here because at this point the user wanted + // a repository that may potentially harm him + if (TransactionManager->MetaIndexParser->Load(PartialRelease) == false || VerifyVendor(Message) == false) + /* expired Release files are still a problem you need extra force for */; + else + QueueIndexes(true); + } + } +} + /*}}}*/ + +pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire * const Owner, /*{{{*/ + pkgAcqMetaBase * const TransactionManager, + IndexTarget const &DataTarget, + IndexTarget const &DetachedSigTarget, + vector<IndexTarget> const IndexTargets, + indexRecords * const MetaIndexParser) : + pkgAcqMetaBase(Owner, TransactionManager, IndexTargets, DataTarget, MetaIndexParser), + DetachedSigTarget(DetachedSigTarget) +{ + if(_config->FindB("Debug::Acquire::Transaction", false) == true) + std::clog << "New pkgAcqMetaIndex with TransactionManager " + << this->TransactionManager << std::endl; + + DestFile = GetPartialFileNameFromURI(DataTarget.URI); + + // Create the item + Desc.Description = DataTarget.Description; + Desc.Owner = this; + Desc.ShortDesc = DataTarget.ShortDesc; + Desc.URI = DataTarget.URI; + + // we expect more item + ExpectedAdditionalItems = IndexTargets.size(); + QueueURI(Desc); +} + /*}}}*/ +void pkgAcqMetaIndex::Done(string const &Message, /*{{{*/ + HashStringList const &Hashes, + pkgAcquire::MethodConfig const * const Cfg) +{ + Item::Done(Message,Hashes,Cfg); + + if(CheckDownloadDone(this, Message, Hashes)) + { + // we have a Release file, now download the Signature, all further + // verify/queue for additional downloads will be done in the + // pkgAcqMetaSig::Done() code + new pkgAcqMetaSig(Owner, TransactionManager, DetachedSigTarget, this); + } +} + /*}}}*/ +// pkgAcqMetaIndex::Failed - no Release file present /*{{{*/ +void pkgAcqMetaIndex::Failed(string const &Message, + pkgAcquire::MethodConfig const * const Cnf) +{ + pkgAcquire::Item::Failed(Message, Cnf); + Status = StatDone; + + _error->Warning(_("The repository '%s' does not have a Release file. " + "This is deprecated, please contact the owner of the " + "repository."), Target.Description.c_str()); + + // No Release file was present so fall + // back to queueing Packages files without verification + // only allow going further if the users explicitely wants it + if(AllowInsecureRepositories(TransactionManager->MetaIndexParser, TransactionManager, this) == true) + { + // ensure old Release files are removed + TransactionManager->TransactionStageRemoval(this, GetFinalFilename()); + delete TransactionManager->MetaIndexParser; + TransactionManager->MetaIndexParser = NULL; + + // queue without any kind of hashsum support + QueueIndexes(false); + } +} + /*}}}*/ +void pkgAcqMetaIndex::Finished() /*{{{*/ +{ + if(_config->FindB("Debug::Acquire::Transaction", false) == true) + std::clog << "Finished: " << DestFile <<std::endl; + if(TransactionManager != NULL && + TransactionManager->TransactionHasError() == false) + TransactionManager->CommitTransaction(); +} + /*}}}*/ +std::string pkgAcqMetaIndex::DescURI() const /*{{{*/ +{ + return Target.URI; +} + /*}}}*/ +pkgAcqMetaIndex::~pkgAcqMetaIndex() {} + +// AcqMetaSig::AcqMetaSig - Constructor /*{{{*/ +pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire * const Owner, + pkgAcqMetaBase * const TransactionManager, + IndexTarget const Target, + pkgAcqMetaIndex * const MetaIndex) : + pkgAcqTransactionItem(Owner, TransactionManager, Target), MetaIndex(MetaIndex) +{ + DestFile = GetPartialFileNameFromURI(Target.URI); + + // remove any partial downloaded sig-file in partial/. + // it may confuse proxies and is too small to warrant a + // partial download anyway + unlink(DestFile.c_str()); + + // set the TransactionManager + if(_config->FindB("Debug::Acquire::Transaction", false) == true) + std::clog << "New pkgAcqMetaSig with TransactionManager " + << TransactionManager << std::endl; + + // Create the item + Desc.Description = Target.Description; + Desc.Owner = this; + Desc.ShortDesc = Target.ShortDesc; + Desc.URI = Target.URI; + + // If we got a hit for Release, we will get one for Release.gpg too (or obscure errors), + // so we skip the download step and go instantly to verification + if (TransactionManager->IMSHit == true && RealFileExists(GetFinalFilename())) + { + Complete = true; + Status = StatDone; + PartialFile = DestFile = GetFinalFilename(); + MetaIndexFileSignature = DestFile; + MetaIndex->QueueForSignatureVerify(this, MetaIndex->DestFile, DestFile); + } + else + QueueURI(Desc); +} + /*}}}*/ +pkgAcqMetaSig::~pkgAcqMetaSig() /*{{{*/ +{ +} + /*}}}*/ +// AcqMetaSig::Done - The signature was downloaded/verified /*{{{*/ +void pkgAcqMetaSig::Done(string const &Message, HashStringList const &Hashes, + pkgAcquire::MethodConfig const * const Cfg) +{ + if (MetaIndexFileSignature.empty() == false) + { + DestFile = MetaIndexFileSignature; + MetaIndexFileSignature.clear(); + } + Item::Done(Message, Hashes, Cfg); + + if(MetaIndex->AuthPass == false) + { + if(MetaIndex->CheckDownloadDone(this, Message, Hashes) == true) + { + // destfile will be modified to point to MetaIndexFile for the + // gpgv method, so we need to save it here + MetaIndexFileSignature = DestFile; + MetaIndex->QueueForSignatureVerify(this, MetaIndex->DestFile, DestFile); + } + return; + } + else if(MetaIndex->CheckAuthDone(Message) == true) + { + if (TransactionManager->IMSHit == false) + { + TransactionManager->TransactionStageCopy(this, DestFile, GetFinalFilename()); + TransactionManager->TransactionStageCopy(MetaIndex, MetaIndex->DestFile, MetaIndex->GetFinalFilename()); + } + } +} + /*}}}*/ +void pkgAcqMetaSig::Failed(string const &Message,pkgAcquire::MethodConfig const * const Cnf)/*{{{*/ +{ + Item::Failed(Message,Cnf); + + // check if we need to fail at this point + if (MetaIndex->AuthPass == true && MetaIndex->CheckStopAuthentication(this, Message)) + return; + + string const FinalRelease = MetaIndex->GetFinalFilename(); + string const FinalReleasegpg = GetFinalFilename(); + string const FinalInRelease = TransactionManager->GetFinalFilename(); + + if (RealFileExists(FinalReleasegpg) || RealFileExists(FinalInRelease)) + { + std::string downgrade_msg; + strprintf(downgrade_msg, _("The repository '%s' is no longer signed."), + MetaIndex->Target.Description.c_str()); + if(_config->FindB("Acquire::AllowDowngradeToInsecureRepositories")) + { + // meh, the users wants to take risks (we still mark the packages + // from this repository as unauthenticated) + _error->Warning("%s", downgrade_msg.c_str()); + _error->Warning(_("This is normally not allowed, but the option " + "Acquire::AllowDowngradeToInsecureRepositories was " + "given to override it.")); + Status = StatDone; + } else { + _error->Error("%s", downgrade_msg.c_str()); + if (TransactionManager->IMSHit == false) + Rename(MetaIndex->DestFile, MetaIndex->DestFile + ".FAILED"); + Item::Failed("Message: " + downgrade_msg, Cnf); + TransactionManager->AbortTransaction(); + return; + } + } + else + _error->Warning(_("The data from '%s' is not signed. Packages " + "from that repository can not be authenticated."), + MetaIndex->Target.Description.c_str()); + + // ensures that a Release.gpg file in the lists/ is removed by the transaction + TransactionManager->TransactionStageRemoval(this, DestFile); + + // only allow going further if the users explicitely wants it + if(AllowInsecureRepositories(TransactionManager->MetaIndexParser, TransactionManager, this) == true) + { + if (RealFileExists(FinalReleasegpg) || RealFileExists(FinalInRelease)) + { + // open the last Release if we have it + if (TransactionManager->IMSHit == false) + { + TransactionManager->LastMetaIndexParser = new indexRecords; + _error->PushToStack(); + if (RealFileExists(FinalInRelease)) + TransactionManager->LastMetaIndexParser->Load(FinalInRelease); + else + TransactionManager->LastMetaIndexParser->Load(FinalRelease); + // its unlikely to happen, but if what we have is bad ignore it + if (_error->PendingError()) + { + delete TransactionManager->LastMetaIndexParser; + TransactionManager->LastMetaIndexParser = NULL; + } + _error->RevertToStack(); + } + } + + // we parse the indexes here because at this point the user wanted + // a repository that may potentially harm him + if (TransactionManager->MetaIndexParser->Load(MetaIndex->DestFile) == false || MetaIndex->VerifyVendor(Message) == false) + /* expired Release files are still a problem you need extra force for */; + else + MetaIndex->QueueIndexes(true); + + TransactionManager->TransactionStageCopy(MetaIndex, MetaIndex->DestFile, MetaIndex->GetFinalFilename()); + } + + // FIXME: this is used often (e.g. in pkgAcqIndexTrans) so refactor + if (Cnf->LocalOnly == true || + StringToBool(LookupTag(Message,"Transient-Failure"),false) == false) + { + // Ignore this + Status = StatDone; + } +} + /*}}}*/ + + +// AcqBaseIndex - Constructor /*{{{*/ +pkgAcqBaseIndex::pkgAcqBaseIndex(pkgAcquire * const Owner, + pkgAcqMetaBase * const TransactionManager, + IndexTarget const Target) +: pkgAcqTransactionItem(Owner, TransactionManager, Target) +{ +} + /*}}}*/ +pkgAcqBaseIndex::~pkgAcqBaseIndex() {} + // AcqDiffIndex::AcqDiffIndex - Constructor /*{{{*/ // --------------------------------------------------------------------- /* Get the DiffIndex file first and see if there are patches available @@ -337,49 +1502,24 @@ void pkgAcquire::Item::ReportMirrorFailure(string FailCode) * patches. If anything goes wrong in that process, it will fall back to * the original packages file */ -pkgAcqDiffIndex::pkgAcqDiffIndex(pkgAcquire *Owner, - pkgAcqMetaBase *TransactionManager, - IndexTarget const * const Target, - HashStringList const &ExpectedHashes, - indexRecords *MetaIndexParser) - : pkgAcqBaseIndex(Owner, TransactionManager, Target, ExpectedHashes, - MetaIndexParser), PackagesFileReadyInPartial(false) +pkgAcqDiffIndex::pkgAcqDiffIndex(pkgAcquire * const Owner, + pkgAcqMetaBase * const TransactionManager, + IndexTarget const Target) + : pkgAcqBaseIndex(Owner, TransactionManager, Target) { - Debug = _config->FindB("Debug::pkgAcquire::Diffs",false); - RealURI = Target->URI; Desc.Owner = this; - Desc.Description = Target->Description + ".diff/Index"; - Desc.ShortDesc = Target->ShortDesc; - Desc.URI = Target->URI + ".diff/Index"; + Desc.Description = Target.Description + ".diff/Index"; + Desc.ShortDesc = Target.ShortDesc; + Desc.URI = Target.URI + ".diff/Index"; DestFile = GetPartialFileNameFromURI(Desc.URI); if(Debug) std::clog << "pkgAcqDiffIndex: " << Desc.URI << std::endl; - // look for the current package file - CurrentPackagesFile = _config->FindDir("Dir::State::lists"); - CurrentPackagesFile += URItoFileName(RealURI); - - // FIXME: this file:/ check is a hack to prevent fetching - // from local sources. this is really silly, and - // should be fixed cleanly as soon as possible - if(!FileExists(CurrentPackagesFile) || - Desc.URI.substr(0,strlen("file:/")) == "file:/") - { - // we don't have a pkg file or we don't want to queue - Failed("No index file, local or canceld by user", NULL); - return; - } - - if(Debug) - std::clog << "pkgAcqDiffIndex::pkgAcqDiffIndex(): " - << CurrentPackagesFile << std::endl; - QueueURI(Desc); - } /*}}}*/ // AcqIndex::Custom600Headers - Insert custom request headers /*{{{*/ @@ -387,8 +1527,7 @@ pkgAcqDiffIndex::pkgAcqDiffIndex(pkgAcquire *Owner, /* The only header we use is the last-modified header. */ string pkgAcqDiffIndex::Custom600Headers() const { - string Final = _config->FindDir("Dir::State::lists"); - Final += URItoFileName(Desc.URI); + string const Final = GetFinalFilename(); if(Debug) std::clog << "Custom600Header-IMS: " << Final << std::endl; @@ -400,7 +1539,14 @@ string pkgAcqDiffIndex::Custom600Headers() const return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); } /*}}}*/ -bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile) /*{{{*/ +void pkgAcqDiffIndex::QueueOnIMSHit() const /*{{{*/ +{ + // list cleanup needs to know that this file as well as the already + // present index is ours, so we create an empty diff to save it for us + new pkgAcqIndexDiffs(Owner, TransactionManager, Target); +} + /*}}}*/ +bool pkgAcqDiffIndex::ParseDiffIndex(string const &IndexDiffFile) /*{{{*/ { // failing here is fine: our caller will take care of trying to // get the complete file if patching fails @@ -447,37 +1593,42 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile) /*{{{*/ return false; } - if (ServerHashes != HashSums()) + std::string const CurrentPackagesFile = GetFinalFileNameFromURI(Target.URI); + HashStringList const TargetFileHashes = GetExpectedHashesFor(Target.MetaKey); + if (TargetFileHashes.usable() == false || ServerHashes != TargetFileHashes) { if (Debug == true) { std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": Index has different hashes than parser, probably older, so fail pdiffing" << std::endl; - printHashSumComparision(CurrentPackagesFile, ServerHashes, HashSums()); + printHashSumComparision(CurrentPackagesFile, ServerHashes, TargetFileHashes); } return false; } - if (ServerHashes.VerifyFile(CurrentPackagesFile) == true) + HashStringList LocalHashes; + // try avoiding calculating the hash here as this is costly + if (TransactionManager->LastMetaIndexParser != NULL) + LocalHashes = GetExpectedHashesFromFor(TransactionManager->LastMetaIndexParser, Target.MetaKey); + if (LocalHashes.usable() == false) + { + FileFd fd(CurrentPackagesFile, FileFd::ReadOnly); + Hashes LocalHashesCalc(ServerHashes); + LocalHashesCalc.AddFD(fd); + LocalHashes = LocalHashesCalc.GetHashStringList(); + } + + if (ServerHashes == LocalHashes) { // we have the same sha1 as the server so we are done here if(Debug) std::clog << "pkgAcqDiffIndex: Package file " << CurrentPackagesFile << " is up-to-date" << std::endl; - - // list cleanup needs to know that this file as well as the already - // present index is ours, so we create an empty diff to save it for us - new pkgAcqIndexDiffs(Owner, TransactionManager, Target, - ExpectedHashes, MetaIndexParser); + QueueOnIMSHit(); return true; } - FileFd fd(CurrentPackagesFile, FileFd::ReadOnly); - Hashes LocalHashesCalc; - LocalHashesCalc.AddFD(fd); - HashStringList const LocalHashes = LocalHashesCalc.GetHashStringList(); - if(Debug) std::clog << "Server-Current: " << ServerHashes.find(NULL)->toStr() << " and we start at " - << fd.Name() << " " << fd.FileSize() << " " << LocalHashes.find(NULL)->toStr() << std::endl; + << CurrentPackagesFile << " " << LocalHashes.FileSize() << " " << LocalHashes.find(NULL)->toStr() << std::endl; // parse all of (provided) history vector<DiffInfo> available_patches; @@ -506,7 +1657,7 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile) /*{{{*/ std::vector<DiffInfo>::iterator cur = available_patches.begin(); for (; cur != available_patches.end(); ++cur) { - if (cur->file != filename || unlikely(cur->result_size != size)) + if (cur->file != filename) continue; cur->result_hashes.push_back(HashString(*type, hash)); break; @@ -518,8 +1669,7 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile) /*{{{*/ DiffInfo next; next.file = filename; next.result_hashes.push_back(HashString(*type, hash)); - next.result_size = size; - next.patch_size = 0; + next.result_hashes.FileSize(size); available_patches.push_back(next); } else @@ -567,10 +1717,9 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile) /*{{{*/ { if (cur->file != filename) continue; - if (unlikely(cur->patch_size != 0 && cur->patch_size != size)) - continue; + if (cur->patch_hashes.empty()) + cur->patch_hashes.FileSize(size); cur->patch_hashes.push_back(HashString(*type, hash)); - cur->patch_size = size; break; } if (cur != available_patches.end()) @@ -582,6 +1731,48 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile) /*{{{*/ } } + for (char const * const * type = HashString::SupportedHashes(); *type != NULL; ++type) + { + std::string tagname = *type; + tagname.append("-Download"); + std::string const tmp = Tags.FindS(tagname.c_str()); + if (tmp.empty() == true) + continue; + + string hash, filename; + unsigned long long size; + std::stringstream ss(tmp); + + // FIXME: all of pdiff supports only .gz compressed patches + while (ss >> hash >> size >> filename) + { + if (unlikely(hash.empty() == true || filename.empty() == true)) + continue; + if (unlikely(APT::String::Endswith(filename, ".gz") == false)) + continue; + filename.erase(filename.length() - 3); + + // see if we have a record for this file already + std::vector<DiffInfo>::iterator cur = available_patches.begin(); + for (; cur != available_patches.end(); ++cur) + { + if (cur->file != filename) + continue; + if (cur->download_hashes.empty()) + cur->download_hashes.FileSize(size); + cur->download_hashes.push_back(HashString(*type, hash)); + break; + } + if (cur != available_patches.end()) + continue; + if (Debug == true) + std::clog << "pkgAcqDiffIndex: " << IndexDiffFile << ": File " << filename + << " wasn't in the list for the first parsed hash! (download)" << std::endl; + break; + } + } + + bool foundStart = false; for (std::vector<DiffInfo>::iterator cur = available_patches.begin(); cur != available_patches.end(); ++cur) @@ -617,9 +1808,9 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile) /*{{{*/ unsigned long long patchesSize = 0; for (std::vector<DiffInfo>::const_iterator cur = available_patches.begin(); cur != available_patches.end(); ++cur) - patchesSize += cur->patch_size; + patchesSize += cur->patch_hashes.FileSize(); unsigned long long const sizeLimit = ServerSize * _config->FindI("Acquire::PDiffs::SizeLimit", 100); - if (false && sizeLimit > 0 && (sizeLimit/100) < patchesSize) + if (sizeLimit > 0 && (sizeLimit/100) < patchesSize) { if (Debug) std::clog << "Need " << patchesSize << " bytes (Limit is " << sizeLimit/100 @@ -627,20 +1818,6 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile) /*{{{*/ return false; } - // FIXME: make this use the method - PackagesFileReadyInPartial = true; - std::string const Partial = GetPartialFileNameFromURI(RealURI); - - FileFd From(CurrentPackagesFile, FileFd::ReadOnly); - FileFd To(Partial, FileFd::WriteEmpty); - if(CopyFile(From, To) == false) - return _error->Errno("CopyFile", "failed to copy"); - - if(Debug) - std::cerr << "Done copying " << CurrentPackagesFile - << " -> " << Partial - << std::endl; - // we have something, queue the diffs string::size_type const last_space = Description.rfind(" "); if(last_space != string::npos) @@ -660,18 +1837,13 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile) /*{{{*/ } if (pdiff_merge == false) - { - new pkgAcqIndexDiffs(Owner, TransactionManager, Target, ExpectedHashes, - MetaIndexParser, available_patches); - } + new pkgAcqIndexDiffs(Owner, TransactionManager, Target, available_patches); else { std::vector<pkgAcqIndexMergeDiffs*> *diffs = new std::vector<pkgAcqIndexMergeDiffs*>(available_patches.size()); for(size_t i = 0; i < available_patches.size(); ++i) (*diffs)[i] = new pkgAcqIndexMergeDiffs(Owner, TransactionManager, Target, - ExpectedHashes, - MetaIndexParser, available_patches[i], diffs); } @@ -682,7 +1854,7 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile) /*{{{*/ return true; } /*}}}*/ -void pkgAcqDiffIndex::Failed(string Message,pkgAcquire::MethodConfig * Cnf)/*{{{*/ +void pkgAcqDiffIndex::Failed(string const &Message,pkgAcquire::MethodConfig const * const Cnf)/*{{{*/ { Item::Failed(Message,Cnf); Status = StatDone; @@ -691,90 +1863,87 @@ void pkgAcqDiffIndex::Failed(string Message,pkgAcquire::MethodConfig * Cnf)/*{{{ std::clog << "pkgAcqDiffIndex failed: " << Desc.URI << " with " << Message << std::endl << "Falling back to normal index file acquire" << std::endl; - new pkgAcqIndex(Owner, TransactionManager, Target, ExpectedHashes, MetaIndexParser); + new pkgAcqIndex(Owner, TransactionManager, Target); } /*}}}*/ -void pkgAcqDiffIndex::Done(string Message,unsigned long long Size,HashStringList const &Hashes, /*{{{*/ - pkgAcquire::MethodConfig *Cnf) +void pkgAcqDiffIndex::Done(string const &Message,HashStringList const &Hashes, /*{{{*/ + pkgAcquire::MethodConfig const * const Cnf) { if(Debug) std::clog << "pkgAcqDiffIndex::Done(): " << Desc.URI << std::endl; - Item::Done(Message, Size, Hashes, Cnf); - - // verify the index target - if(Target && Target->MetaKey != "" && MetaIndexParser && Hashes.usable()) - { - std::string IndexMetaKey = Target->MetaKey + ".diff/Index"; - indexRecords::checkSum *Record = MetaIndexParser->Lookup(IndexMetaKey); - if(Record && Record->Hashes.usable() && Hashes != Record->Hashes) - { - RenameOnError(HashSumMismatch); - printHashSumComparision(RealURI, Record->Hashes, Hashes); - Failed(Message, Cnf); - return; - } - - } - - string FinalFile; - FinalFile = _config->FindDir("Dir::State::lists"); - FinalFile += URItoFileName(Desc.URI); + Item::Done(Message, Hashes, Cnf); + string const FinalFile = GetFinalFilename(); if(StringToBool(LookupTag(Message,"IMS-Hit"),false)) DestFile = FinalFile; - if(!ParseDiffIndex(DestFile)) - return Failed("Message: Couldn't parse pdiff index", Cnf); + if(ParseDiffIndex(DestFile) == false) + { + Failed("Message: Couldn't parse pdiff index", Cnf); + // queue for final move - this should happen even if we fail + // while parsing (e.g. on sizelimit) and download the complete file. + TransactionManager->TransactionStageCopy(this, DestFile, FinalFile); + return; + } - // queue for final move TransactionManager->TransactionStageCopy(this, DestFile, FinalFile); Complete = true; Status = StatDone; Dequeue(); + return; } /*}}}*/ +pkgAcqDiffIndex::~pkgAcqDiffIndex() {} + // AcqIndexDiffs::AcqIndexDiffs - Constructor /*{{{*/ // --------------------------------------------------------------------- /* The package diff is added to the queue. one object is constructed * for each diff and the index */ -pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire *Owner, - pkgAcqMetaBase *TransactionManager, - struct IndexTarget const * const Target, - HashStringList const &ExpectedHashes, - indexRecords *MetaIndexParser, - vector<DiffInfo> diffs) - : pkgAcqBaseIndex(Owner, TransactionManager, Target, ExpectedHashes, MetaIndexParser), +pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire * const Owner, + pkgAcqMetaBase * const TransactionManager, + IndexTarget const Target, + vector<DiffInfo> const &diffs) + : pkgAcqBaseIndex(Owner, TransactionManager, Target), available_patches(diffs) { - DestFile = GetPartialFileNameFromURI(Target->URI); + DestFile = GetPartialFileNameFromURI(Target.URI); Debug = _config->FindB("Debug::pkgAcquire::Diffs",false); - RealURI = Target->URI; Desc.Owner = this; - Description = Target->Description; - Desc.ShortDesc = Target->ShortDesc; + Description = Target.Description; + Desc.ShortDesc = Target.ShortDesc; if(available_patches.empty() == true) { // we are done (yeah!), check hashes against the final file - DestFile = _config->FindDir("Dir::State::lists"); - DestFile += URItoFileName(Target->URI); + DestFile = GetFinalFileNameFromURI(Target.URI); Finish(true); } else { + // patching needs to be bootstrapped with the 'old' version + std::string const PartialFile = GetPartialFileNameFromURI(Target.URI); + if (RealFileExists(PartialFile) == false) + { + if (symlink(GetFinalFilename().c_str(), PartialFile.c_str()) != 0) + { + Failed("Link creation of " + PartialFile + " to " + GetFinalFilename() + " failed", NULL); + return; + } + } + // get the next diff State = StateFetchDiff; QueueNextDiff(); } } /*}}}*/ -void pkgAcqIndexDiffs::Failed(string Message,pkgAcquire::MethodConfig * Cnf)/*{{{*/ +void pkgAcqIndexDiffs::Failed(string const &Message,pkgAcquire::MethodConfig const * const Cnf)/*{{{*/ { Item::Failed(Message,Cnf); Status = StatDone; @@ -782,7 +1951,12 @@ void pkgAcqIndexDiffs::Failed(string Message,pkgAcquire::MethodConfig * Cnf)/*{{ if(Debug) std::clog << "pkgAcqIndexDiffs failed: " << Desc.URI << " with " << Message << std::endl << "Falling back to normal index file acquire" << std::endl; - new pkgAcqIndex(Owner, TransactionManager, Target, ExpectedHashes, MetaIndexParser); + DestFile = GetPartialFileNameFromURI(Target.URI); + RenameOnError(PDiffError); + std::string const patchname = GetDiffsPatchFileName(DestFile); + if (RealFileExists(patchname)) + rename(patchname.c_str(), std::string(patchname + ".FAILED").c_str()); + new pkgAcqIndex(Owner, TransactionManager, Target); Finish(); } /*}}}*/ @@ -796,19 +1970,9 @@ void pkgAcqIndexDiffs::Finish(bool allDone) // we restore the original name, this is required, otherwise // the file will be cleaned - if(allDone) + if(allDone) { - if(HashSums().usable() && !HashSums().VerifyFile(DestFile)) - { - RenameOnError(HashSumMismatch); - Dequeue(); - return; - } - - // queue for copy - std::string FinalFile = _config->FindDir("Dir::State::lists"); - FinalFile += URItoFileName(RealURI); - TransactionManager->TransactionStageCopy(this, DestFile, FinalFile); + TransactionManager->TransactionStageCopy(this, DestFile, GetFinalFilename()); // this is for the "real" finish Complete = true; @@ -830,7 +1994,7 @@ void pkgAcqIndexDiffs::Finish(bool allDone) bool pkgAcqIndexDiffs::QueueNextDiff() /*{{{*/ { // calc sha1 of the just patched file - std::string const FinalFile = GetPartialFileNameFromURI(RealURI); + std::string const FinalFile = GetPartialFileNameFromURI(Target.URI); if(!FileExists(FinalFile)) { @@ -846,7 +2010,8 @@ bool pkgAcqIndexDiffs::QueueNextDiff() /*{{{*/ if(Debug) std::clog << "QueueNextDiff: " << FinalFile << " (" << LocalHashes.find(NULL)->toStr() << ")" << std::endl; - if (unlikely(LocalHashes.usable() == false || ExpectedHashes.usable() == false)) + HashStringList const TargetFileHashes = GetExpectedHashesFor(Target.MetaKey); + if (unlikely(LocalHashes.usable() == false || TargetFileHashes.usable() == false)) { Failed("Local/Expected hashes are not usable", NULL); return false; @@ -854,7 +2019,7 @@ bool pkgAcqIndexDiffs::QueueNextDiff() /*{{{*/ // final file reached before all patches are applied - if(LocalHashes == ExpectedHashes) + if(LocalHashes == TargetFileHashes) { Finish(true); return true; @@ -879,9 +2044,9 @@ bool pkgAcqIndexDiffs::QueueNextDiff() /*{{{*/ } // queue the right diff - Desc.URI = RealURI + ".diff/" + available_patches[0].file + ".gz"; + Desc.URI = Target.URI + ".diff/" + available_patches[0].file + ".gz"; Desc.Description = Description + " " + available_patches[0].file + string(".pdiff"); - DestFile = GetPartialFileNameFromURI(RealURI + ".diff/" + available_patches[0].file); + DestFile = GetPartialFileNameFromURI(Target.URI + ".diff/" + available_patches[0].file); if(Debug) std::clog << "pkgAcqIndexDiffs::QueueNextDiff(): " << Desc.URI << std::endl; @@ -891,34 +2056,21 @@ bool pkgAcqIndexDiffs::QueueNextDiff() /*{{{*/ return true; } /*}}}*/ -void pkgAcqIndexDiffs::Done(string Message,unsigned long long Size, HashStringList const &Hashes, /*{{{*/ - pkgAcquire::MethodConfig *Cnf) +void pkgAcqIndexDiffs::Done(string const &Message, HashStringList const &Hashes, /*{{{*/ + pkgAcquire::MethodConfig const * const Cnf) { if(Debug) std::clog << "pkgAcqIndexDiffs::Done(): " << Desc.URI << std::endl; - Item::Done(Message, Size, Hashes, Cnf); + Item::Done(Message, Hashes, Cnf); - // FIXME: verify this download too before feeding it to rred - std::string const FinalFile = GetPartialFileNameFromURI(RealURI); + std::string const FinalFile = GetPartialFileNameFromURI(Target.URI); + std::string const PatchFile = GetDiffsPatchFileName(FinalFile); // success in downloading a diff, enter ApplyDiff state if(State == StateFetchDiff) { - FileFd fd(DestFile, FileFd::ReadOnly, FileFd::Gzip); - class Hashes LocalHashesCalc; - LocalHashesCalc.AddFD(fd); - HashStringList const LocalHashes = LocalHashesCalc.GetHashStringList(); - - if (fd.Size() != available_patches[0].patch_size || - available_patches[0].patch_hashes != LocalHashes) - { - Failed("Patch has Size/Hashsum mismatch", NULL); - return; - } - - // rred excepts the patch as $FinalFile.ed - Rename(DestFile,FinalFile+".ed"); + Rename(DestFile, PatchFile); if(Debug) std::clog << "Sending to rred method: " << FinalFile << std::endl; @@ -929,18 +2081,17 @@ void pkgAcqIndexDiffs::Done(string Message,unsigned long long Size, HashStringLi 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()); - unlink((FinalFile + ".ed").c_str()); + unlink(PatchFile.c_str()); // move into place - if(Debug) + if(Debug) { std::clog << "Moving patched file in place: " << std::endl << DestFile << " -> " << FinalFile << std::endl; @@ -951,7 +2102,6 @@ void pkgAcqIndexDiffs::Done(string Message,unsigned long long Size, HashStringLi // see if there is more to download if(available_patches.empty() == false) { new pkgAcqIndexDiffs(Owner, TransactionManager, Target, - ExpectedHashes, MetaIndexParser, available_patches); return Finish(); } else @@ -961,28 +2111,39 @@ void pkgAcqIndexDiffs::Done(string Message,unsigned long long Size, HashStringLi } } /*}}}*/ +std::string pkgAcqIndexDiffs::Custom600Headers() const /*{{{*/ +{ + if(State != StateApplyDiff) + return pkgAcqBaseIndex::Custom600Headers(); + std::ostringstream patchhashes; + HashStringList const ExpectedHashes = available_patches[0].patch_hashes; + for (HashStringList::const_iterator hs = ExpectedHashes.begin(); hs != ExpectedHashes.end(); ++hs) + patchhashes << "\nPatch-0-" << hs->HashType() << "-Hash: " << hs->HashValue(); + patchhashes << pkgAcqBaseIndex::Custom600Headers(); + return patchhashes.str(); +} + /*}}}*/ +pkgAcqIndexDiffs::~pkgAcqIndexDiffs() {} + // AcqIndexMergeDiffs::AcqIndexMergeDiffs - Constructor /*{{{*/ -pkgAcqIndexMergeDiffs::pkgAcqIndexMergeDiffs(pkgAcquire *Owner, - pkgAcqMetaBase *TransactionManager, - struct IndexTarget const * const Target, - HashStringList const &ExpectedHashes, - indexRecords *MetaIndexParser, +pkgAcqIndexMergeDiffs::pkgAcqIndexMergeDiffs(pkgAcquire * const Owner, + pkgAcqMetaBase * const TransactionManager, + IndexTarget const Target, DiffInfo const &patch, std::vector<pkgAcqIndexMergeDiffs*> const * const allPatches) - : pkgAcqBaseIndex(Owner, TransactionManager, Target, ExpectedHashes, MetaIndexParser), + : pkgAcqBaseIndex(Owner, TransactionManager, Target), patch(patch), allPatches(allPatches), State(StateFetchDiff) { Debug = _config->FindB("Debug::pkgAcquire::Diffs",false); - RealURI = Target->URI; Desc.Owner = this; - Description = Target->Description; - Desc.ShortDesc = Target->ShortDesc; + Description = Target.Description; + Desc.ShortDesc = Target.ShortDesc; - Desc.URI = RealURI + ".diff/" + patch.file + ".gz"; + Desc.URI = Target.URI + ".diff/" + patch.file + ".gz"; Desc.Description = Description + " " + patch.file + string(".pdiff"); - DestFile = GetPartialFileNameFromURI(RealURI + ".diff/" + patch.file); + DestFile = GetPartialFileNameFromURI(Target.URI + ".diff/" + patch.file); if(Debug) std::clog << "pkgAcqIndexMergeDiffs: " << Desc.URI << std::endl; @@ -990,7 +2151,7 @@ pkgAcqIndexMergeDiffs::pkgAcqIndexMergeDiffs(pkgAcquire *Owner, QueueURI(Desc); } /*}}}*/ -void pkgAcqIndexMergeDiffs::Failed(string Message,pkgAcquire::MethodConfig * Cnf)/*{{{*/ +void pkgAcqIndexMergeDiffs::Failed(string const &Message,pkgAcquire::MethodConfig const * const Cnf)/*{{{*/ { if(Debug) std::clog << "pkgAcqIndexMergeDiffs failed: " << Desc.URI << " with " << Message << std::endl; @@ -1007,36 +2168,28 @@ void pkgAcqIndexMergeDiffs::Failed(string Message,pkgAcquire::MethodConfig * Cnf // first failure means we should fallback State = StateErrorDiff; - std::clog << "Falling back to normal index file acquire" << std::endl; - new pkgAcqIndex(Owner, TransactionManager, Target, ExpectedHashes, MetaIndexParser); + if (Debug) + std::clog << "Falling back to normal index file acquire" << std::endl; + DestFile = GetPartialFileNameFromURI(Target.URI); + 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); } /*}}}*/ -void pkgAcqIndexMergeDiffs::Done(string Message,unsigned long long Size,HashStringList const &Hashes, /*{{{*/ - pkgAcquire::MethodConfig *Cnf) +void pkgAcqIndexMergeDiffs::Done(string const &Message, HashStringList const &Hashes, /*{{{*/ + pkgAcquire::MethodConfig const * const Cnf) { if(Debug) std::clog << "pkgAcqIndexMergeDiffs::Done(): " << Desc.URI << std::endl; - Item::Done(Message,Size,Hashes,Cnf); - - // FIXME: verify download before feeding it to rred - string const FinalFile = GetPartialFileNameFromURI(RealURI); + Item::Done(Message, Hashes, Cnf); + string const FinalFile = GetPartialFileNameFromURI(Target.URI); if (State == StateFetchDiff) { - FileFd fd(DestFile, FileFd::ReadOnly, FileFd::Gzip); - class Hashes LocalHashesCalc; - LocalHashesCalc.AddFD(fd); - HashStringList const LocalHashes = LocalHashesCalc.GetHashStringList(); - - if (fd.Size() != patch.patch_size || patch.patch_hashes != LocalHashes) - { - Failed("Patch has Size/Hashsum mismatch", NULL); - return; - } - - // rred expects the patch as $FinalFile.ed.$patchname.gz - Rename(DestFile, FinalFile + ".ed." + patch.file + ".gz"); + Rename(DestFile, GetMergeDiffsPatchFileName(FinalFile, patch.file)); // check if this is the last completed diff State = StateDoneDiff; @@ -1052,6 +2205,13 @@ void pkgAcqIndexMergeDiffs::Done(string Message,unsigned long long Size,HashStri // this is the last completed diff, so we are ready to apply now State = StateApplyDiff; + // patching needs to be bootstrapped with the 'old' version + if (symlink(GetFinalFilename().c_str(), FinalFile.c_str()) != 0) + { + Failed("Link creation of " + FinalFile + " to " + GetFinalFilename() + " failed", NULL); + return; + } + if(Debug) std::clog << "Sending to rred method: " << FinalFile << std::endl; @@ -1064,33 +2224,24 @@ void pkgAcqIndexMergeDiffs::Done(string Message,unsigned long long Size,HashStri // success in download/apply all diffs, clean up else if (State == StateApplyDiff) { - // see if we really got the expected file - if(ExpectedHashes.usable() && !ExpectedHashes.VerifyFile(DestFile)) - { - RenameOnError(HashSumMismatch); - return; - } - - - std::string FinalFile = _config->FindDir("Dir::State::lists"); - FinalFile += URItoFileName(RealURI); - // move the result into place + std::string const Final = GetFinalFilename(); if(Debug) std::clog << "Queue patched file in place: " << std::endl - << DestFile << " -> " << FinalFile << std::endl; + << DestFile << " -> " << Final << std::endl; // queue for copy by the transaction manager - TransactionManager->TransactionStageCopy(this, DestFile, FinalFile); + TransactionManager->TransactionStageCopy(this, DestFile, Final); // ensure the ed's are gone regardless of list-cleanup for (std::vector<pkgAcqIndexMergeDiffs *>::const_iterator I = allPatches->begin(); I != allPatches->end(); ++I) { - std::string const PartialFile = GetPartialFileNameFromURI(RealURI); - std::string patch = PartialFile + ".ed." + (*I)->patch.file + ".gz"; + std::string const PartialFile = GetPartialFileNameFromURI(Target.URI); + std::string const patch = GetMergeDiffsPatchFileName(PartialFile, (*I)->patch.file); unlink(patch.c_str()); } + unlink(FinalFile.c_str()); // all set and done Complete = true; @@ -1099,54 +2250,35 @@ void pkgAcqIndexMergeDiffs::Done(string Message,unsigned long long Size,HashStri } } /*}}}*/ -// AcqBaseIndex::VerifyHashByMetaKey - verify hash for the given metakey /*{{{*/ -bool pkgAcqBaseIndex::VerifyHashByMetaKey(HashStringList const &Hashes) +std::string pkgAcqIndexMergeDiffs::Custom600Headers() const /*{{{*/ { - if(MetaKey != "" && Hashes.usable()) + if(State != StateApplyDiff) + return pkgAcqBaseIndex::Custom600Headers(); + std::ostringstream patchhashes; + unsigned int seen_patches = 0; + for (std::vector<pkgAcqIndexMergeDiffs *>::const_iterator I = allPatches->begin(); + I != allPatches->end(); ++I) { - indexRecords::checkSum *Record = MetaIndexParser->Lookup(MetaKey); - if(Record && Record->Hashes.usable() && Hashes != Record->Hashes) - { - printHashSumComparision(RealURI, Record->Hashes, Hashes); - return false; - } + HashStringList const ExpectedHashes = (*I)->patch.patch_hashes; + for (HashStringList::const_iterator hs = ExpectedHashes.begin(); hs != ExpectedHashes.end(); ++hs) + patchhashes << "\nPatch-" << seen_patches << "-" << hs->HashType() << "-Hash: " << hs->HashValue(); + ++seen_patches; } - return true; + patchhashes << pkgAcqBaseIndex::Custom600Headers(); + return patchhashes.str(); } /*}}}*/ -// AcqIndex::AcqIndex - Constructor /*{{{*/ -// --------------------------------------------------------------------- -/* The package file is added to the queue and a second class is - instantiated to fetch the revision file */ -pkgAcqIndex::pkgAcqIndex(pkgAcquire *Owner, - string URI,string URIDesc,string ShortDesc, - HashStringList const &ExpectedHash) - : pkgAcqBaseIndex(Owner, 0, NULL, ExpectedHash, NULL) -{ - RealURI = URI; +pkgAcqIndexMergeDiffs::~pkgAcqIndexMergeDiffs() {} - AutoSelectCompression(); - Init(URI, URIDesc, ShortDesc); - - if(_config->FindB("Debug::Acquire::Transaction", false) == true) - std::clog << "New pkgIndex with TransactionManager " - << TransactionManager << std::endl; -} - /*}}}*/ // AcqIndex::AcqIndex - Constructor /*{{{*/ -pkgAcqIndex::pkgAcqIndex(pkgAcquire *Owner, - pkgAcqMetaBase *TransactionManager, - IndexTarget const *Target, - HashStringList const &ExpectedHash, - indexRecords *MetaIndexParser) - : pkgAcqBaseIndex(Owner, TransactionManager, Target, ExpectedHash, - MetaIndexParser) +pkgAcqIndex::pkgAcqIndex(pkgAcquire * const Owner, + pkgAcqMetaBase * const TransactionManager, + IndexTarget const Target) + : pkgAcqBaseIndex(Owner, TransactionManager, Target) { - RealURI = Target->URI; - // autoselect the compression method AutoSelectCompression(); - Init(Target->URI, Target->Description, Target->ShortDesc); + Init(Target.URI, Target.Description, Target.ShortDesc); if(_config->FindB("Debug::Acquire::Transaction", false) == true) std::clog << "New pkgIndex with TransactionManager " @@ -1158,14 +2290,14 @@ void pkgAcqIndex::AutoSelectCompression() { std::vector<std::string> types = APT::Configuration::getCompressionTypes(); CompressionExtensions = ""; - if (ExpectedHashes.usable()) + if (TransactionManager->MetaIndexParser != NULL && TransactionManager->MetaIndexParser->Exists(Target.MetaKey)) { for (std::vector<std::string>::const_iterator t = types.begin(); t != types.end(); ++t) { - std::string CompressedMetaKey = string(Target->MetaKey).append(".").append(*t); + std::string CompressedMetaKey = string(Target.MetaKey).append(".").append(*t); if (*t == "uncompressed" || - MetaIndexParser->Exists(CompressedMetaKey) == true) + TransactionManager->MetaIndexParser->Exists(CompressedMetaKey) == true) CompressionExtensions.append(*t).append(" "); } } @@ -1186,30 +2318,32 @@ void pkgAcqIndex::Init(string const &URI, string const &URIDesc, DestFile = GetPartialFileNameFromURI(URI); - CurrentCompressionExtension = CompressionExtensions.substr(0, CompressionExtensions.find(' ')); + size_t const nextExt = CompressionExtensions.find(' '); + if (nextExt == std::string::npos) + { + CurrentCompressionExtension = CompressionExtensions; + CompressionExtensions.clear(); + } + else + { + CurrentCompressionExtension = CompressionExtensions.substr(0, nextExt); + CompressionExtensions = CompressionExtensions.substr(nextExt+1); + } + if (CurrentCompressionExtension == "uncompressed") { Desc.URI = URI; - if(Target) - MetaKey = string(Target->MetaKey); } + else if (unlikely(CurrentCompressionExtension.empty())) + return; else { Desc.URI = URI + '.' + CurrentCompressionExtension; DestFile = DestFile + '.' + CurrentCompressionExtension; - if(Target) - MetaKey = string(Target->MetaKey) + '.' + CurrentCompressionExtension; } - // load the filesize - if(MetaIndexParser) - { - indexRecords::checkSum *Record = MetaIndexParser->Lookup(MetaKey); - if(Record) - FileSize = Record->Size; - - InitByHashIfNeeded(MetaKey); - } + if(TransactionManager->MetaIndexParser != NULL) + InitByHashIfNeeded(); Desc.Description = URIDesc; Desc.Owner = this; @@ -1219,7 +2353,7 @@ void pkgAcqIndex::Init(string const &URI, string const &URIDesc, } /*}}}*/ // AcqIndex::AdjustForByHash - modify URI for by-hash support /*{{{*/ -void pkgAcqIndex::InitByHashIfNeeded(const std::string MetaKey) +void pkgAcqIndex::InitByHashIfNeeded() { // TODO: // - (maybe?) add support for by-hash into the sources.list as flag @@ -1227,15 +2361,15 @@ void pkgAcqIndex::InitByHashIfNeeded(const std::string MetaKey) std::string HostKnob = "APT::Acquire::" + ::URI(Desc.URI).Host + "::By-Hash"; if(_config->FindB("APT::Acquire::By-Hash", false) == true || _config->FindB(HostKnob, false) == true || - MetaIndexParser->GetSupportsAcquireByHash()) + TransactionManager->MetaIndexParser->GetSupportsAcquireByHash()) { - indexRecords::checkSum *Record = MetaIndexParser->Lookup(MetaKey); - if(Record) + HashStringList const Hashes = GetExpectedHashes(); + if(Hashes.usable()) { // FIXME: should we really use the best hash here? or a fixed one? - const HashString *TargetHash = Record->Hashes.find(""); - std::string ByHash = "/by-hash/" + TargetHash->HashType() + "/" + TargetHash->HashValue(); - size_t trailing_slash = Desc.URI.find_last_of("/"); + HashString const * const TargetHash = Hashes.find(""); + std::string const ByHash = "/by-hash/" + TargetHash->HashType() + "/" + TargetHash->HashValue(); + size_t const trailing_slash = Desc.URI.find_last_of("/"); Desc.URI = Desc.URI.replace( trailing_slash, Desc.URI.substr(trailing_slash+1).size()+1, @@ -1243,7 +2377,7 @@ void pkgAcqIndex::InitByHashIfNeeded(const std::string MetaKey) } else { _error->Warning( "Fetching ByHash requested but can not find record for %s", - MetaKey.c_str()); + GetMetaKey().c_str()); } } } @@ -1260,54 +2394,40 @@ string pkgAcqIndex::Custom600Headers() const if (stat(Final.c_str(),&Buf) == 0) msg += "\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); - if(Target->IsOptional()) + if(Target.IsOptional) msg += "\nFail-Ignore: true"; return msg; } /*}}}*/ -// pkgAcqIndex::Failed - getting the indexfile failed /*{{{*/ -void pkgAcqIndex::Failed(string Message,pkgAcquire::MethodConfig *Cnf) +// AcqIndex::Failed - getting the indexfile failed /*{{{*/ +void pkgAcqIndex::Failed(string const &Message,pkgAcquire::MethodConfig const * const Cnf) { Item::Failed(Message,Cnf); - size_t const nextExt = CompressionExtensions.find(' '); - if (nextExt != std::string::npos) - { - CompressionExtensions = CompressionExtensions.substr(nextExt+1); - Init(RealURI, Desc.Description, Desc.ShortDesc); - Status = StatIdle; - return; - } - - // on decompression failure, remove bad versions in partial/ - if (Stage == STAGE_DECOMPRESS_AND_VERIFY) + // authorisation matches will not be fixed by other compression types + if (Status != StatAuthError) { - unlink(EraseFileName.c_str()); + if (CompressionExtensions.empty() == false) + { + Init(Target.URI, Desc.Description, Desc.ShortDesc); + Status = StatIdle; + return; + } } - Item::Failed(Message,Cnf); - - if(Target->IsOptional() && ExpectedHashes.empty() && Stage == STAGE_DOWNLOAD) + if(Target.IsOptional && GetExpectedHashes().empty() && Stage == STAGE_DOWNLOAD) Status = StatDone; else TransactionManager->AbortTransaction(); } /*}}}*/ -// pkgAcqIndex::GetFinalFilename - Return the full final file path /*{{{*/ -std::string pkgAcqIndex::GetFinalFilename() const -{ - std::string FinalFile = _config->FindDir("Dir::State::lists"); - FinalFile += URItoFileName(RealURI); - return GetCompressedFileName(RealURI, FinalFile, CurrentCompressionExtension); -} - /*}}}*/ // 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(RealURI, GetPartialFileNameFromURI(RealURI), CurrentCompressionExtension); + DestFile = GetCompressedFileName(Target.URI, GetPartialFileNameFromURI(Target.URI), CurrentCompressionExtension); // copy FinalFile into partial/ so that we check the hash again string FinalFile = GetFinalFilename(); @@ -1316,33 +2436,6 @@ void pkgAcqIndex::ReverifyAfterIMS() QueueURI(Desc); } /*}}}*/ -// AcqIndex::ValidateFile - Validate the content of the downloaded file /*{{{*/ -bool pkgAcqIndex::ValidateFile(const std::string &FileName) -{ - // FIXME: this can go away once we only ever download stuff that - // has a valid hash and we never do GET based probing - // FIXME2: this also leaks debian-isms into the code and should go therefore - - /* Always validate the index file for correctness (all indexes must - * have a Package field) (LP: #346386) (Closes: #627642) - */ - FileFd fd(FileName, FileFd::ReadOnly, FileFd::Extension); - // Only test for correctness if the content of the file is not empty - // (empty is ok) - if (fd.Size() > 0) - { - pkgTagSection sec; - pkgTagFile tag(&fd); - - // all our current indexes have a field 'Package' in each section - if (_error->PendingError() == true || - tag.Step(sec) == false || - sec.Exists("Package") == false) - return false; - } - return true; -} - /*}}}*/ // AcqIndex::Done - Finished a fetch /*{{{*/ // --------------------------------------------------------------------- /* This goes through a number of states.. On the initial fetch the @@ -1350,12 +2443,11 @@ bool pkgAcqIndex::ValidateFile(const std::string &FileName) to the uncompressed version of the file. If this is so the file is copied into the partial directory. In all other cases the file is decompressed with a compressed uri. */ -void pkgAcqIndex::Done(string Message, - unsigned long long Size, +void pkgAcqIndex::Done(string const &Message, HashStringList const &Hashes, - pkgAcquire::MethodConfig *Cfg) + pkgAcquire::MethodConfig const * const Cfg) { - Item::Done(Message,Size,Hashes,Cfg); + Item::Done(Message,Hashes,Cfg); switch(Stage) { @@ -1369,19 +2461,9 @@ void pkgAcqIndex::Done(string Message, } /*}}}*/ // AcqIndex::StageDownloadDone - Queue for decompress and verify /*{{{*/ -void pkgAcqIndex::StageDownloadDone(string Message, - HashStringList const &Hashes, - pkgAcquire::MethodConfig *Cfg) +void pkgAcqIndex::StageDownloadDone(string const &Message, HashStringList const &, + pkgAcquire::MethodConfig const * const) { - // First check if the calculcated Hash of the (compressed) downloaded - // file matches the hash we have in the MetaIndexRecords for this file - if(VerifyHashByMetaKey(Hashes) == false) - { - RenameOnError(HashSumMismatch); - Failed(Message, Cfg); - return; - } - Complete = true; // Handle the unzipd case @@ -1406,7 +2488,7 @@ void pkgAcqIndex::StageDownloadDone(string Message, // 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) + if (FileName != DestFile && RealFileExists(DestFile) == false) Local = true; else EraseFileName = FileName; @@ -1424,7 +2506,7 @@ void pkgAcqIndex::StageDownloadDone(string Message, // If we have compressed indexes enabled, queue for hash verification if (_config->FindB("Acquire::GzipIndexes",false)) { - DestFile = GetPartialFileNameFromURI(RealURI + '.' + CurrentCompressionExtension); + DestFile = GetPartialFileNameFromURI(Target.URI + '.' + CurrentCompressionExtension); EraseFileName = ""; Stage = STAGE_DECOMPRESS_AND_VERIFY; Desc.URI = "copy:" + FileName; @@ -1453,785 +2535,28 @@ void pkgAcqIndex::StageDownloadDone(string Message, SetActiveSubprocess(decompProg); } /*}}}*/ -// pkgAcqIndex::StageDecompressDone - Final verification /*{{{*/ -void pkgAcqIndex::StageDecompressDone(string Message, - HashStringList const &Hashes, - pkgAcquire::MethodConfig *Cfg) +// AcqIndex::StageDecompressDone - Final verification /*{{{*/ +void pkgAcqIndex::StageDecompressDone(string const &, + HashStringList const &, + pkgAcquire::MethodConfig const * const) { - if (ExpectedHashes.usable() && ExpectedHashes != Hashes) - { - Desc.URI = RealURI; - RenameOnError(HashSumMismatch); - printHashSumComparision(RealURI, ExpectedHashes, Hashes); - Failed(Message, Cfg); - return; - } - - if(!ValidateFile(DestFile)) - { - RenameOnError(InvalidFormat); - Failed(Message, Cfg); - return; - } - - // remove the compressed version of the file - unlink(EraseFileName.c_str()); - // Done, queue for rename on transaction finished TransactionManager->TransactionStageCopy(this, DestFile, GetFinalFilename()); - return; } /*}}}*/ -// AcqMetaBase::Add - Add a item to the current Transaction /*{{{*/ -void pkgAcqMetaBase::Add(Item *I) -{ - Transaction.push_back(I); -} - /*}}}*/ -// AcqMetaBase::AbortTransaction - Abort the current Transaction /*{{{*/ -void pkgAcqMetaBase::AbortTransaction() -{ - if(_config->FindB("Debug::Acquire::Transaction", false) == true) - std::clog << "AbortTransaction: " << TransactionManager << std::endl; - - // ensure the toplevel is in error state too - for (std::vector<Item*>::iterator I = Transaction.begin(); - I != Transaction.end(); ++I) - { - if(_config->FindB("Debug::Acquire::Transaction", false) == true) - std::clog << " Cancel: " << (*I)->DestFile << std::endl; - // the transaction will abort, so stop anything that is idle - if ((*I)->Status == pkgAcquire::Item::StatIdle) - { - (*I)->Status = pkgAcquire::Item::StatDone; - (*I)->Dequeue(); - } - } - Transaction.clear(); -} - /*}}}*/ -// AcqMetaBase::TransactionHasError - Check for errors in Transaction /*{{{*/ -bool pkgAcqMetaBase::TransactionHasError() -{ - for (pkgAcquire::ItemIterator I = Transaction.begin(); - I != Transaction.end(); ++I) - if((*I)->Status != pkgAcquire::Item::StatDone && - (*I)->Status != pkgAcquire::Item::StatIdle) - return true; - - return false; -} - /*}}}*/ -// AcqMetaBase::CommitTransaction - Commit a transaction /*{{{*/ -void pkgAcqMetaBase::CommitTransaction() -{ - if(_config->FindB("Debug::Acquire::Transaction", false) == true) - std::clog << "CommitTransaction: " << this << std::endl; - - // move new files into place *and* remove files that are not - // part of the transaction but are still on disk - for (std::vector<Item*>::iterator I = Transaction.begin(); - I != Transaction.end(); ++I) - { - if((*I)->PartialFile != "") - { - if(_config->FindB("Debug::Acquire::Transaction", false) == true) - std::clog << "mv " << (*I)->PartialFile << " -> "<< (*I)->DestFile << " " - << (*I)->DescURI() << std::endl; - - Rename((*I)->PartialFile, (*I)->DestFile); - } else { - if(_config->FindB("Debug::Acquire::Transaction", false) == true) - std::clog << "rm " - << (*I)->DestFile - << " " - << (*I)->DescURI() - << std::endl; - unlink((*I)->DestFile.c_str()); - } - // mark that this transaction is finished - (*I)->TransactionManager = 0; - } - Transaction.clear(); -} - /*}}}*/ -// AcqMetaBase::TransactionStageCopy - Stage a file for copying /*{{{*/ -void pkgAcqMetaBase::TransactionStageCopy(Item *I, - const std::string &From, - const std::string &To) -{ - I->PartialFile = From; - I->DestFile = To; -} - /*}}}*/ -// AcqMetaBase::TransactionStageRemoval - Sage a file for removal /*{{{*/ -void pkgAcqMetaBase::TransactionStageRemoval(Item *I, - const std::string &FinalFile) -{ - I->PartialFile = ""; - I->DestFile = FinalFile; -} - /*}}}*/ -// AcqMetaBase::GenerateAuthWarning - Check gpg authentication error /*{{{*/ -bool pkgAcqMetaBase::CheckStopAuthentication(const std::string &RealURI, - const std::string &Message) -{ - // FIXME: this entire function can do now that we disallow going to - // a unauthenticated state and can cleanly rollback - - string Final = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI); - - if(FileExists(Final)) - { - Status = StatTransientNetworkError; - _error->Warning(_("An error occurred during the signature " - "verification. The repository is not updated " - "and the previous index files will be used. " - "GPG error: %s: %s\n"), - Desc.Description.c_str(), - LookupTag(Message,"Message").c_str()); - RunScripts("APT::Update::Auth-Failure"); - return true; - } else if (LookupTag(Message,"Message").find("NODATA") != string::npos) { - /* Invalid signature file, reject (LP: #346386) (Closes: #627642) */ - _error->Error(_("GPG error: %s: %s"), - Desc.Description.c_str(), - LookupTag(Message,"Message").c_str()); - Status = StatError; - return true; - } else { - _error->Warning(_("GPG error: %s: %s"), - Desc.Description.c_str(), - LookupTag(Message,"Message").c_str()); - } - // gpgv method failed - ReportMirrorFailure("GPGFailure"); - return false; -} - /*}}}*/ -// AcqMetaSig::AcqMetaSig - Constructor /*{{{*/ -pkgAcqMetaSig::pkgAcqMetaSig(pkgAcquire *Owner, - pkgAcqMetaBase *TransactionManager, - string URI,string URIDesc,string ShortDesc, - string MetaIndexFile, - const vector<IndexTarget*>* IndexTargets, - indexRecords* MetaIndexParser) : - pkgAcqMetaBase(Owner, IndexTargets, MetaIndexParser, - HashStringList(), TransactionManager), - RealURI(URI), MetaIndexFile(MetaIndexFile), URIDesc(URIDesc), - ShortDesc(ShortDesc) -{ - DestFile = _config->FindDir("Dir::State::lists") + "partial/"; - DestFile += URItoFileName(RealURI); - - // remove any partial downloaded sig-file in partial/. - // it may confuse proxies and is too small to warrant a - // partial download anyway - unlink(DestFile.c_str()); - - // set the TransactionManager - if(_config->FindB("Debug::Acquire::Transaction", false) == true) - std::clog << "New pkgAcqMetaSig with TransactionManager " - << TransactionManager << std::endl; - - // Create the item - Desc.Description = URIDesc; - Desc.Owner = this; - Desc.ShortDesc = ShortDesc; - Desc.URI = URI; - - QueueURI(Desc); -} - /*}}}*/ -pkgAcqMetaSig::~pkgAcqMetaSig() /*{{{*/ -{ -} - /*}}}*/ -// pkgAcqMetaSig::Custom600Headers - Insert custom request headers /*{{{*/ -// --------------------------------------------------------------------- -string pkgAcqMetaSig::Custom600Headers() const -{ - std::string Header = GetCustom600Headers(RealURI); - return Header; -} - /*}}}*/ -// pkgAcqMetaSig::Done - The signature was downloaded/verified /*{{{*/ -// --------------------------------------------------------------------- -/* The only header we use is the last-modified header. */ -void pkgAcqMetaSig::Done(string Message,unsigned long long Size, - HashStringList const &Hashes, - pkgAcquire::MethodConfig *Cfg) -{ - Item::Done(Message, Size, Hashes, Cfg); - - if(AuthPass == false) - { - if(CheckDownloadDone(Message, RealURI) == true) - { - // destfile will be modified to point to MetaIndexFile for the - // gpgv method, so we need to save it here - MetaIndexFileSignature = DestFile; - QueueForSignatureVerify(MetaIndexFile, MetaIndexFileSignature); - } - return; - } - else - { - if(CheckAuthDone(Message, RealURI) == true) - { - std::string FinalFile = _config->FindDir("Dir::State::lists"); - FinalFile += URItoFileName(RealURI); - TransactionManager->TransactionStageCopy(this, MetaIndexFileSignature, FinalFile); - } - } -} - /*}}}*/ -void pkgAcqMetaSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf)/*{{{*/ -{ - Item::Failed(Message,Cnf); +pkgAcqIndex::~pkgAcqIndex() {} - // check if we need to fail at this point - if (AuthPass == true && CheckStopAuthentication(RealURI, Message)) - return; - - // FIXME: meh, this is not really elegant - string const Final = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI); - string const InReleaseURI = RealURI.replace(RealURI.rfind("Release.gpg"), 12, - "InRelease"); - string const FinalInRelease = _config->FindDir("Dir::State::lists") + URItoFileName(InReleaseURI); - if (RealFileExists(Final) || RealFileExists(FinalInRelease)) - { - std::string downgrade_msg; - strprintf(downgrade_msg, _("The repository '%s' is no longer signed."), - URIDesc.c_str()); - if(_config->FindB("Acquire::AllowDowngradeToInsecureRepositories")) - { - // meh, the users wants to take risks (we still mark the packages - // from this repository as unauthenticated) - _error->Warning("%s", downgrade_msg.c_str()); - _error->Warning(_("This is normally not allowed, but the option " - "Acquire::AllowDowngradeToInsecureRepositories was " - "given to override it.")); - Status = StatDone; - } else { - _error->Error("%s", downgrade_msg.c_str()); - Rename(MetaIndexFile, MetaIndexFile+".FAILED"); - Item::Failed("Message: " + downgrade_msg, Cnf); - TransactionManager->AbortTransaction(); - return; - } - } - else - _error->Warning(_("The data from '%s' is not signed. Packages " - "from that repository can not be authenticated."), - URIDesc.c_str()); - - // this ensures that any file in the lists/ dir is removed by the - // transaction - DestFile = GetPartialFileNameFromURI(RealURI); - TransactionManager->TransactionStageRemoval(this, DestFile); - - // only allow going further if the users explicitely wants it - if(AllowInsecureRepositories(MetaIndexParser, TransactionManager, this) == true) - { - // we parse the indexes here because at this point the user wanted - // a repository that may potentially harm him - MetaIndexParser->Load(MetaIndexFile); - QueueIndexes(true); - } - - // FIXME: this is used often (e.g. in pkgAcqIndexTrans) so refactor - if (Cnf->LocalOnly == true || - StringToBool(LookupTag(Message,"Transient-Failure"),false) == false) - { - // Ignore this - Status = StatDone; - } -} - /*}}}*/ -pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire *Owner, /*{{{*/ - pkgAcqMetaBase *TransactionManager, - string URI,string URIDesc,string ShortDesc, - string MetaIndexSigURI,string MetaIndexSigURIDesc, string MetaIndexSigShortDesc, - const vector<IndexTarget*>* IndexTargets, - indexRecords* MetaIndexParser) : - pkgAcqMetaBase(Owner, IndexTargets, MetaIndexParser, HashStringList(), - TransactionManager), - RealURI(URI), URIDesc(URIDesc), ShortDesc(ShortDesc), - MetaIndexSigURI(MetaIndexSigURI), MetaIndexSigURIDesc(MetaIndexSigURIDesc), - MetaIndexSigShortDesc(MetaIndexSigShortDesc) -{ - if(TransactionManager == NULL) - { - this->TransactionManager = this; - this->TransactionManager->Add(this); - } - - if(_config->FindB("Debug::Acquire::Transaction", false) == true) - std::clog << "New pkgAcqMetaIndex with TransactionManager " - << this->TransactionManager << std::endl; - - - Init(URIDesc, ShortDesc); -} - /*}}}*/ -// pkgAcqMetaIndex::Init - Delayed constructor /*{{{*/ -void pkgAcqMetaIndex::Init(std::string URIDesc, std::string ShortDesc) -{ - DestFile = GetPartialFileNameFromURI(RealURI); - - // Create the item - Desc.Description = URIDesc; - Desc.Owner = this; - Desc.ShortDesc = ShortDesc; - Desc.URI = RealURI; - - // we expect more item - ExpectedAdditionalItems = IndexTargets->size(); - QueueURI(Desc); -} - /*}}}*/ -// pkgAcqMetaIndex::Custom600Headers - Insert custom request headers /*{{{*/ -// --------------------------------------------------------------------- -string pkgAcqMetaIndex::Custom600Headers() const -{ - return GetCustom600Headers(RealURI); -} - /*}}}*/ -void pkgAcqMetaIndex::Done(string Message,unsigned long long Size, /*{{{*/ - HashStringList const &Hashes, - pkgAcquire::MethodConfig *Cfg) -{ - Item::Done(Message,Size,Hashes,Cfg); - - if(CheckDownloadDone(Message, RealURI)) - { - // we have a Release file, now download the Signature, all further - // verify/queue for additional downloads will be done in the - // pkgAcqMetaSig::Done() code - std::string MetaIndexFile = DestFile; - new pkgAcqMetaSig(Owner, TransactionManager, - MetaIndexSigURI, MetaIndexSigURIDesc, - MetaIndexSigShortDesc, MetaIndexFile, IndexTargets, - MetaIndexParser); - - string FinalFile = _config->FindDir("Dir::State::lists"); - FinalFile += URItoFileName(RealURI); - TransactionManager->TransactionStageCopy(this, DestFile, FinalFile); - } -} - /*}}}*/ -bool pkgAcqMetaBase::CheckAuthDone(string Message, const string &RealURI) /*{{{*/ -{ - // At this point, the gpgv method has succeeded, so there is a - // valid signature from a key in the trusted keyring. We - // perform additional verification of its contents, and use them - // to verify the indexes we are about to download - - if (!MetaIndexParser->Load(DestFile)) - { - Status = StatAuthError; - ErrorText = MetaIndexParser->ErrorText; - return false; - } - - if (!VerifyVendor(Message, RealURI)) - { - return false; - } - - if (_config->FindB("Debug::pkgAcquire::Auth", false)) - std::cerr << "Signature verification succeeded: " - << DestFile << std::endl; - - // Download further indexes with verification - // - // it would be really nice if we could simply do - // if (IMSHit == false) QueueIndexes(true) - // and skip the download if the Release file has not changed - // - but right now the list cleaner will needs to be tricked - // to not delete all our packages/source indexes in this case - QueueIndexes(true); - - return true; -} - /*}}}*/ -// pkgAcqMetaBase::GetCustom600Headers - Get header for AcqMetaBase /*{{{*/ -// --------------------------------------------------------------------- -string pkgAcqMetaBase::GetCustom600Headers(const string &RealURI) const -{ - std::string Header = "\nIndex-File: true"; - std::string MaximumSize; - strprintf(MaximumSize, "\nMaximum-Size: %i", - _config->FindI("Acquire::MaxReleaseFileSize", 10*1000*1000)); - Header += MaximumSize; - - string FinalFile = _config->FindDir("Dir::State::lists"); - FinalFile += URItoFileName(RealURI); - - struct stat Buf; - if (stat(FinalFile.c_str(),&Buf) == 0) - Header += "\nLast-Modified: " + TimeRFC1123(Buf.st_mtime); - - return Header; -} - /*}}}*/ -// pkgAcqMetaBase::QueueForSignatureVerify /*{{{*/ -void pkgAcqMetaBase::QueueForSignatureVerify(const std::string &MetaIndexFile, - const std::string &MetaIndexFileSignature) -{ - AuthPass = true; - Desc.URI = "gpgv:" + MetaIndexFileSignature; - DestFile = MetaIndexFile; - QueueURI(Desc); - SetActiveSubprocess("gpgv"); -} - /*}}}*/ -// pkgAcqMetaBase::CheckDownloadDone /*{{{*/ -bool pkgAcqMetaBase::CheckDownloadDone(const std::string &Message, - const std::string &RealURI) -{ - // We have just finished downloading a Release file (it is not - // verified yet) - - string FileName = LookupTag(Message,"Filename"); - if (FileName.empty() == true) - { - Status = StatError; - ErrorText = "Method gave a blank filename"; - return false; - } - - if (FileName != DestFile) - { - Local = true; - Desc.URI = "copy:" + FileName; - QueueURI(Desc); - return false; - } - - // make sure to verify against the right file on I-M-S hit - IMSHit = StringToBool(LookupTag(Message,"IMS-Hit"),false); - if(IMSHit) - { - string FinalFile = _config->FindDir("Dir::State::lists"); - FinalFile += URItoFileName(RealURI); - DestFile = FinalFile; - } - - // set Item to complete as the remaining work is all local (verify etc) - Complete = true; - - return true; -} - /*}}}*/ -void pkgAcqMetaBase::QueueIndexes(bool verify) /*{{{*/ -{ - // at this point the real Items are loaded in the fetcher - ExpectedAdditionalItems = 0; - - vector <struct IndexTarget*>::const_iterator Target; - for (Target = IndexTargets->begin(); - Target != IndexTargets->end(); - ++Target) - { - HashStringList ExpectedIndexHashes; - const indexRecords::checkSum *Record = MetaIndexParser->Lookup((*Target)->MetaKey); - - // optional target that we do not have in the Release file are - // skipped - if (verify == true && Record == NULL && (*Target)->IsOptional()) - continue; - - // targets without a hash record are a error when verify is required - if (verify == true && Record == NULL) - { - Status = StatAuthError; - strprintf(ErrorText, _("Unable to find expected entry '%s' in Release file (Wrong sources.list entry or malformed file)"), (*Target)->MetaKey.c_str()); - return; - } - - if (Record) - ExpectedIndexHashes = Record->Hashes; - - if (_config->FindB("Debug::pkgAcquire::Auth", false)) - { - std::cerr << "Queueing: " << (*Target)->URI << std::endl - << "Expected Hash:" << std::endl; - for (HashStringList::const_iterator hs = ExpectedIndexHashes.begin(); hs != ExpectedIndexHashes.end(); ++hs) - std::cerr << "\t- " << hs->toStr() << std::endl; - std::cerr << "For: " << Record->MetaKeyFilename << std::endl; - - } - if (verify == true && ExpectedIndexHashes.empty() == true) - { - Status = StatAuthError; - strprintf(ErrorText, _("Unable to find hash sum for '%s' in Release file"), (*Target)->MetaKey.c_str()); - return; - } - - /* Queue the Index file (Packages, Sources, Translation-$foo - (either diff or full packages files, depending - on the users option) - we also check if the PDiff Index file is listed - in the Meta-Index file. Ideal would be if pkgAcqDiffIndex would test this - instead, but passing the required info to it is to much hassle */ - if(_config->FindB("Acquire::PDiffs",true) == true && (verify == false || - MetaIndexParser->Exists((*Target)->MetaKey + ".diff/Index") == true)) - new pkgAcqDiffIndex(Owner, TransactionManager, *Target, ExpectedIndexHashes, MetaIndexParser); - else - new pkgAcqIndex(Owner, TransactionManager, *Target, ExpectedIndexHashes, MetaIndexParser); - } -} - /*}}}*/ -bool pkgAcqMetaBase::VerifyVendor(string Message, const string &RealURI)/*{{{*/ -{ - string::size_type pos; - - // check for missing sigs (that where not fatal because otherwise we had - // bombed earlier) - string missingkeys; - string msg = _("There is no public key available for the " - "following key IDs:\n"); - pos = Message.find("NO_PUBKEY "); - if (pos != std::string::npos) - { - string::size_type start = pos+strlen("NO_PUBKEY "); - string Fingerprint = Message.substr(start, Message.find("\n")-start); - missingkeys += (Fingerprint); - } - if(!missingkeys.empty()) - _error->Warning("%s", (msg + missingkeys).c_str()); - - string Transformed = MetaIndexParser->GetExpectedDist(); - - if (Transformed == "../project/experimental") - { - Transformed = "experimental"; - } - - pos = Transformed.rfind('/'); - if (pos != string::npos) - { - Transformed = Transformed.substr(0, pos); - } - - if (Transformed == ".") - { - Transformed = ""; - } - - if (_config->FindB("Acquire::Check-Valid-Until", true) == true && - MetaIndexParser->GetValidUntil() > 0) { - time_t const invalid_since = time(NULL) - MetaIndexParser->GetValidUntil(); - if (invalid_since > 0) - // TRANSLATOR: The first %s is the URL of the bad Release file, the second is - // the time since then the file is invalid - formated in the same way as in - // the download progress display (e.g. 7d 3h 42min 1s) - return _error->Error( - _("Release file for %s is expired (invalid since %s). " - "Updates for this repository will not be applied."), - RealURI.c_str(), TimeToStr(invalid_since).c_str()); - } - - if (_config->FindB("Debug::pkgAcquire::Auth", false)) - { - std::cerr << "Got Codename: " << MetaIndexParser->GetDist() << std::endl; - std::cerr << "Expecting Dist: " << MetaIndexParser->GetExpectedDist() << std::endl; - std::cerr << "Transformed Dist: " << Transformed << std::endl; - } - - if (MetaIndexParser->CheckDist(Transformed) == false) - { - // This might become fatal one day -// Status = StatAuthError; -// ErrorText = "Conflicting distribution; expected " -// + MetaIndexParser->GetExpectedDist() + " but got " -// + MetaIndexParser->GetDist(); -// return false; - if (!Transformed.empty()) - { - _error->Warning(_("Conflicting distribution: %s (expected %s but got %s)"), - Desc.Description.c_str(), - Transformed.c_str(), - MetaIndexParser->GetDist().c_str()); - } - } - - return true; -} - /*}}}*/ -// pkgAcqMetaIndex::Failed - no Release file present /*{{{*/ -void pkgAcqMetaIndex::Failed(string Message, - pkgAcquire::MethodConfig * Cnf) -{ - pkgAcquire::Item::Failed(Message, Cnf); - Status = StatDone; - - string FinalFile = _config->FindDir("Dir::State::lists") + URItoFileName(RealURI); - - _error->Warning(_("The repository '%s' does not have a Release file. " - "This is deprecated, please contact the owner of the " - "repository."), URIDesc.c_str()); - - // No Release file was present so fall - // back to queueing Packages files without verification - // only allow going further if the users explicitely wants it - if(AllowInsecureRepositories(MetaIndexParser, TransactionManager, this) == true) - { - // Done, queue for rename on transaction finished - if (FileExists(DestFile)) - TransactionManager->TransactionStageCopy(this, DestFile, FinalFile); - - // queue without any kind of hashsum support - QueueIndexes(false); - } -} - /*}}}*/ -void pkgAcqMetaIndex::Finished() /*{{{*/ -{ - if(_config->FindB("Debug::Acquire::Transaction", false) == true) - std::clog << "Finished: " << DestFile <<std::endl; - if(TransactionManager != NULL && - TransactionManager->TransactionHasError() == false) - TransactionManager->CommitTransaction(); -} - /*}}}*/ -pkgAcqMetaClearSig::pkgAcqMetaClearSig(pkgAcquire *Owner, /*{{{*/ - string const &URI, string const &URIDesc, string const &ShortDesc, - string const &MetaIndexURI, string const &MetaIndexURIDesc, string const &MetaIndexShortDesc, - string const &MetaSigURI, string const &MetaSigURIDesc, string const &MetaSigShortDesc, - const vector<IndexTarget*>* IndexTargets, - indexRecords* MetaIndexParser) : - pkgAcqMetaIndex(Owner, NULL, URI, URIDesc, ShortDesc, MetaSigURI, MetaSigURIDesc,MetaSigShortDesc, IndexTargets, MetaIndexParser), - MetaIndexURI(MetaIndexURI), MetaIndexURIDesc(MetaIndexURIDesc), MetaIndexShortDesc(MetaIndexShortDesc), - MetaSigURI(MetaSigURI), MetaSigURIDesc(MetaSigURIDesc), MetaSigShortDesc(MetaSigShortDesc) -{ - // index targets + (worst case:) Release/Release.gpg - ExpectedAdditionalItems = IndexTargets->size() + 2; - -} - /*}}}*/ -pkgAcqMetaClearSig::~pkgAcqMetaClearSig() /*{{{*/ -{ -} - /*}}}*/ -// pkgAcqMetaClearSig::Custom600Headers - Insert custom request headers /*{{{*/ -// --------------------------------------------------------------------- -string pkgAcqMetaClearSig::Custom600Headers() const -{ - string Header = GetCustom600Headers(RealURI); - Header += "\nFail-Ignore: true"; - return Header; -} - /*}}}*/ -// pkgAcqMetaClearSig::Done - We got a file /*{{{*/ -// --------------------------------------------------------------------- -void pkgAcqMetaClearSig::Done(std::string Message,unsigned long long Size, - HashStringList const &Hashes, - pkgAcquire::MethodConfig *Cnf) -{ - Item::Done(Message, Size, Hashes, Cnf); - - // if we expect a ClearTextSignature (InRelase), ensure that - // this is what we get and if not fail to queue a - // Release/Release.gpg, see #346386 - if (FileExists(DestFile) && !StartsWithGPGClearTextSignature(DestFile)) - { - pkgAcquire::Item::Failed(Message, Cnf); - RenameOnError(NotClearsigned); - TransactionManager->AbortTransaction(); - return; - } - - if(AuthPass == false) - { - if(CheckDownloadDone(Message, RealURI) == true) - QueueForSignatureVerify(DestFile, DestFile); - return; - } - else - { - if(CheckAuthDone(Message, RealURI) == true) - { - string FinalFile = _config->FindDir("Dir::State::lists"); - FinalFile += URItoFileName(RealURI); - - // queue for copy in place - TransactionManager->TransactionStageCopy(this, DestFile, FinalFile); - } - } -} - /*}}}*/ -void pkgAcqMetaClearSig::Failed(string Message,pkgAcquire::MethodConfig *Cnf) /*{{{*/ -{ - Item::Failed(Message, Cnf); - - // we failed, we will not get additional items from this method - ExpectedAdditionalItems = 0; - - if (AuthPass == false) - { - // Queue the 'old' InRelease file for removal if we try Release.gpg - // as otherwise the file will stay around and gives a false-auth - // impression (CVE-2012-0214) - string FinalFile = _config->FindDir("Dir::State::lists"); - FinalFile.append(URItoFileName(RealURI)); - TransactionManager->TransactionStageRemoval(this, FinalFile); - Status = StatDone; - - new pkgAcqMetaIndex(Owner, TransactionManager, - MetaIndexURI, MetaIndexURIDesc, MetaIndexShortDesc, - MetaSigURI, MetaSigURIDesc, MetaSigShortDesc, - IndexTargets, MetaIndexParser); - } - else - { - if(CheckStopAuthentication(RealURI, Message)) - return; - - _error->Warning(_("The data from '%s' is not signed. Packages " - "from that repository can not be authenticated."), - URIDesc.c_str()); - - // No Release file was present, or verification failed, so fall - // back to queueing Packages files without verification - // only allow going further if the users explicitely wants it - if(AllowInsecureRepositories(MetaIndexParser, TransactionManager, this) == true) - { - Status = StatDone; - - /* Always move the meta index, even if gpgv failed. This ensures - * that PackageFile objects are correctly filled in */ - if (FileExists(DestFile)) - { - string FinalFile = _config->FindDir("Dir::State::lists"); - FinalFile += URItoFileName(RealURI); - /* InRelease files become Release files, otherwise - * they would be considered as trusted later on */ - RealURI = RealURI.replace(RealURI.rfind("InRelease"), 9, - "Release"); - FinalFile = FinalFile.replace(FinalFile.rfind("InRelease"), 9, - "Release"); - - // Done, queue for rename on transaction finished - TransactionManager->TransactionStageCopy(this, DestFile, FinalFile); - } - QueueIndexes(false); - } - } -} - /*}}}*/ // AcqArchive::AcqArchive - Constructor /*{{{*/ // --------------------------------------------------------------------- /* This just sets up the initial fetch environment and queues the first possibilitiy */ -pkgAcqArchive::pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources, - pkgRecords *Recs,pkgCache::VerIterator const &Version, +pkgAcqArchive::pkgAcqArchive(pkgAcquire * const Owner,pkgSourceList * const Sources, + pkgRecords * const Recs,pkgCache::VerIterator const &Version, string &StoreFilename) : - Item(Owner, HashStringList()), Version(Version), Sources(Sources), Recs(Recs), - StoreFilename(StoreFilename), Vf(Version.FileList()), + Item(Owner), LocalSource(false), Version(Version), Sources(Sources), Recs(Recs), + StoreFilename(StoreFilename), Vf(Version.FileList()), Trusted(false) { Retries = _config->FindI("Acquire::Retries",0); @@ -2251,7 +2576,7 @@ pkgAcqArchive::pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources, // Skip not source sources, they do not have file fields. for (; Vf.end() == false; ++Vf) { - if ((Vf.File()->Flags & pkgCache::Flag::NotSource) != 0) + if (Vf.File().Flagged(pkgCache::Flag::NotSource)) continue; break; } @@ -2317,15 +2642,17 @@ bool pkgAcqArchive::QueueNext() { for (; Vf.end() == false; ++Vf) { + pkgCache::PkgFileIterator const PkgF = Vf.File(); // Ignore not source sources - if ((Vf.File()->Flags & pkgCache::Flag::NotSource) != 0) + if (PkgF.Flagged(pkgCache::Flag::NotSource)) continue; // Try to cross match against the source list pkgIndexFile *Index; - if (Sources->FindIndex(Vf.File(),Index) == false) + if (Sources->FindIndex(PkgF, Index) == false) continue; - + LocalSource = PkgF.Flagged(pkgCache::Flag::LocalSource); + // only try to get a trusted package from another source if that source // is also trusted if(Trusted && !Index->IsTrusted()) @@ -2425,25 +2752,10 @@ bool pkgAcqArchive::QueueNext() // AcqArchive::Done - Finished fetching /*{{{*/ // --------------------------------------------------------------------- /* */ -void pkgAcqArchive::Done(string Message,unsigned long long Size, HashStringList const &CalcHashes, - pkgAcquire::MethodConfig *Cfg) +void pkgAcqArchive::Done(string const &Message, HashStringList const &Hashes, + pkgAcquire::MethodConfig const * const Cfg) { - Item::Done(Message, Size, CalcHashes, Cfg); - - // Check the size - if (Size != Version->Size) - { - RenameOnError(SizeMismatch); - return; - } - - // FIXME: could this empty() check impose *any* sort of security issue? - if(ExpectedHashes.usable() && ExpectedHashes != CalcHashes) - { - RenameOnError(HashSumMismatch); - printHashSumComparision(DestFile, ExpectedHashes, CalcHashes); - return; - } + Item::Done(Message, Hashes, Cfg); // Grab the output filename string FileName = LookupTag(Message,"Filename"); @@ -2455,7 +2767,7 @@ void pkgAcqArchive::Done(string Message,unsigned long long Size, HashStringList } // Reference filename - if (FileName != DestFile) + if (DestFile != FileName && RealFileExists(DestFile) == false) { StoreFilename = DestFile = FileName; Local = true; @@ -2464,8 +2776,7 @@ void pkgAcqArchive::Done(string Message,unsigned long long Size, HashStringList } // Done, move it into position - string FinalFile = _config->FindDir("Dir::Cache::Archives"); - FinalFile += flNotDir(StoreFilename); + string const FinalFile = GetFinalFilename(); Rename(DestFile,FinalFile); StoreFilename = DestFile = FinalFile; Complete = true; @@ -2474,14 +2785,14 @@ void pkgAcqArchive::Done(string Message,unsigned long long Size, HashStringList // AcqArchive::Failed - Failure handler /*{{{*/ // --------------------------------------------------------------------- /* Here we try other sources */ -void pkgAcqArchive::Failed(string Message,pkgAcquire::MethodConfig *Cnf) +void pkgAcqArchive::Failed(string const &Message,pkgAcquire::MethodConfig const * const Cnf) { Item::Failed(Message,Cnf); - /* We don't really want to retry on failed media swaps, this prevents + /* We don't really want to retry on failed media swaps, this prevents that. An interesting observation is that permanent failures are not recorded. */ - if (Cnf->Removable == true && + if (Cnf->Removable == true && StringToBool(LookupTag(Message,"Transient-Failure"),false) == true) { // Vf = Version.FileList(); @@ -2509,17 +2820,12 @@ void pkgAcqArchive::Failed(string Message,pkgAcquire::MethodConfig *Cnf) } } /*}}}*/ -// AcqArchive::IsTrusted - Determine whether this archive comes from a trusted source /*{{{*/ -// --------------------------------------------------------------------- -APT_PURE bool pkgAcqArchive::IsTrusted() const +APT_PURE bool pkgAcqArchive::IsTrusted() const /*{{{*/ { return Trusted; } /*}}}*/ -// AcqArchive::Finished - Fetching has finished, tidy up /*{{{*/ -// --------------------------------------------------------------------- -/* */ -void pkgAcqArchive::Finished() +void pkgAcqArchive::Finished() /*{{{*/ { if (Status == pkgAcquire::Item::StatDone && Complete == true) @@ -2527,17 +2833,225 @@ void pkgAcqArchive::Finished() StoreFilename = string(); } /*}}}*/ +std::string pkgAcqArchive::DescURI() const /*{{{*/ +{ + return Desc.URI; +} + /*}}}*/ +std::string pkgAcqArchive::ShortDesc() const /*{{{*/ +{ + return Desc.ShortDesc; +} + /*}}}*/ +pkgAcqArchive::~pkgAcqArchive() {} + +// AcqChangelog::pkgAcqChangelog - Constructors /*{{{*/ +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()) +{ + Desc.URI = URI(Ver); + Init(DestDir, DestFilename); +} +// some parameters are char* here as they come likely from char* interfaces – which can also return NULL +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) +{ + Desc.URI = URI(RlsFile, Component, SrcName, SrcVersion); + Init(DestDir, DestFilename); +} +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) +{ + Desc.URI = URI; + Init(DestDir, DestFilename); +} +void pkgAcqChangelog::Init(std::string const &DestDir, std::string const &DestFilename) +{ + if (Desc.URI.empty()) + { + Status = StatError; + // TRANSLATOR: %s=%s is sourcename=sourceversion, e.g. apt=1.1 + strprintf(ErrorText, _("Changelog unavailable for %s=%s"), SrcName.c_str(), SrcVersion.c_str()); + // Let the error message print something sensible rather than "Failed to fetch /" + if (DestFilename.empty()) + DestFile = SrcName + ".changelog"; + else + DestFile = DestFilename; + Desc.URI = "changelog:/" + DestFile; + return; + } + + if (DestDir.empty()) + { + std::string const systemTemp = GetTempDir(); + 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; + } + DestFile = TemporaryDirectory = tmpname; + } + 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()); + Desc.Owner = this; + QueueURI(Desc); +} + /*}}}*/ +std::string pkgAcqChangelog::URI(pkgCache::VerIterator const &Ver) /*{{{*/ +{ + 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()) + continue; + return uri; + } + return ""; +} +std::string pkgAcqChangelog::URITemplate(pkgCache::RlsFileIterator const &Rls) +{ + if (Rls.end() == true || (Rls->Label == 0 && Rls->Origin == 0)) + return ""; + std::string const serverConfig = "Acquire::Changelogs::URI"; + std::string server; +#define APT_EMPTY_SERVER \ + if (server.empty() == false) \ + { \ + if (server != "no") \ + return server; \ + return ""; \ + } +#define APT_CHECK_SERVER(X, Y) \ + if (Rls->X != 0) \ + { \ + std::string const specialServerConfig = serverConfig + "::" + Y + #X + "::" + Rls.X(); \ + server = _config->Find(specialServerConfig); \ + APT_EMPTY_SERVER \ + } + // this way e.g. Debian-Security can fallback to Debian + APT_CHECK_SERVER(Label, "Override::") + APT_CHECK_SERVER(Origin, "Override::") + + if (RealFileExists(Rls.FileName())) + { + _error->PushToStack(); + FileFd rf; + /* This can be costly. A caller wanting to get millions of URIs might + want to do this on its own once and use Override settings. + We don't do this here as Origin/Label are not as unique as they + should be so this could produce request order-dependent anomalies */ + if (OpenMaybeClearSignedFile(Rls.FileName(), rf) == true) + { + pkgTagFile TagFile(&rf, rf.Size()); + pkgTagSection Section; + if (TagFile.Step(Section) == true) + server = Section.FindS("Changelogs"); + } + _error->RevertToStack(); + APT_EMPTY_SERVER + } + + APT_CHECK_SERVER(Label, "") + APT_CHECK_SERVER(Origin, "") +#undef APT_CHECK_SERVER +#undef APT_EMPTY_SERVER + return ""; +} +std::string pkgAcqChangelog::URI(pkgCache::RlsFileIterator const &Rls, + char const * const Component, char const * const SrcName, + char const * const SrcVersion) +{ + return URI(URITemplate(Rls), Component, SrcName, SrcVersion); +} +std::string pkgAcqChangelog::URI(std::string const &Template, + char const * const Component, char const * const SrcName, + char const * const SrcVersion) +{ + if (Template.find("CHANGEPATH") == std::string::npos) + return ""; + + // the path is: COMPONENT/SRC/SRCNAME/SRCNAME_SRCVER, e.g. main/a/apt/1.1 or contrib/liba/libapt/2.0 + std::string Src = SrcName; + std::string path = APT::String::Startswith(SrcName, "lib") ? Src.substr(0, 4) : Src.substr(0,1); + path.append("/").append(Src).append("/"); + path.append(Src).append("_").append(StripEpoch(SrcVersion)); + // we omit component for releases without one (= flat-style repositories) + if (Component != NULL && strlen(Component) != 0) + path = std::string(Component) + "/" + path; + + return SubstVar(Template, "CHANGEPATH", path); +} + /*}}}*/ +// AcqChangelog::Failed - Failure handler /*{{{*/ +void pkgAcqChangelog::Failed(string const &Message, pkgAcquire::MethodConfig const * const Cnf) +{ + Item::Failed(Message,Cnf); + + std::string errText; + // TRANSLATOR: %s=%s is sourcename=sourceversion, e.g. apt=1.1 + strprintf(errText, _("Changelog unavailable for %s=%s"), SrcName.c_str(), SrcVersion.c_str()); + + // Error is probably something techy like 404 Not Found + if (ErrorText.empty()) + ErrorText = errText; + else + ErrorText = errText + " (" + ErrorText + ")"; + return; +} + /*}}}*/ +// AcqChangelog::Done - Item downloaded OK /*{{{*/ +void pkgAcqChangelog::Done(string const &Message,HashStringList const &CalcHashes, + pkgAcquire::MethodConfig const * const Cnf) +{ + Item::Done(Message,CalcHashes,Cnf); + + Complete = true; +} + /*}}}*/ +pkgAcqChangelog::~pkgAcqChangelog() /*{{{*/ +{ + if (TemporaryDirectory.empty() == false) + { + unlink(DestFile.c_str()); + rmdir(TemporaryDirectory.c_str()); + } +} + /*}}}*/ + // AcqFile::pkgAcqFile - Constructor /*{{{*/ -// --------------------------------------------------------------------- -/* The file is added to the queue */ -pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI, HashStringList const &Hashes, - unsigned long long Size,string Dsc,string ShortDesc, +pkgAcqFile::pkgAcqFile(pkgAcquire * const Owner,string const &URI, HashStringList const &Hashes, + unsigned long long const Size,string const &Dsc,string const &ShortDesc, const string &DestDir, const string &DestFilename, - bool IsIndexFile) : - Item(Owner, Hashes), IsIndexFile(IsIndexFile) + bool const IsIndexFile) : + Item(Owner), IsIndexFile(IsIndexFile), ExpectedHashes(Hashes) { Retries = _config->FindI("Acquire::Retries",0); - + if(!DestFilename.empty()) DestFile = DestFilename; else if(!DestDir.empty()) @@ -2552,7 +3066,7 @@ pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI, HashStringList const &Hashe // Set the short description to the archive component Desc.ShortDesc = ShortDesc; - + // Get the transfer sizes FileSize = Size; struct stat Buf; @@ -2569,21 +3083,11 @@ pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI, HashStringList const &Hashe } /*}}}*/ // AcqFile::Done - Item downloaded OK /*{{{*/ -// --------------------------------------------------------------------- -/* */ -void pkgAcqFile::Done(string Message,unsigned long long Size,HashStringList const &CalcHashes, - pkgAcquire::MethodConfig *Cnf) +void pkgAcqFile::Done(string const &Message,HashStringList const &CalcHashes, + pkgAcquire::MethodConfig const * const Cnf) { - Item::Done(Message,Size,CalcHashes,Cnf); + Item::Done(Message,CalcHashes,Cnf); - // Check the hash - if(ExpectedHashes.usable() && ExpectedHashes != CalcHashes) - { - RenameOnError(HashSumMismatch); - printHashSumComparision(DestFile, ExpectedHashes, CalcHashes); - return; - } - string FileName = LookupTag(Message,"Filename"); if (FileName.empty() == true) { @@ -2593,13 +3097,13 @@ void pkgAcqFile::Done(string Message,unsigned long long Size,HashStringList cons } Complete = true; - + // The files timestamp matches if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true) return; - + // We have to copy it into place - if (FileName != DestFile) + if (RealFileExists(DestFile.c_str()) == false) { Local = true; if (_config->FindB("Acquire::Source-Symlinks",true) == false || @@ -2609,7 +3113,7 @@ void pkgAcqFile::Done(string Message,unsigned long long Size,HashStringList cons QueueURI(Desc); return; } - + // Erase the file if it is a symlink so we can overwrite it struct stat St; if (lstat(DestFile.c_str(),&St) == 0) @@ -2617,7 +3121,7 @@ void pkgAcqFile::Done(string Message,unsigned long long Size,HashStringList cons if (S_ISLNK(St.st_mode) != 0) unlink(DestFile.c_str()); } - + // Symlink the file if (symlink(FileName.c_str(),DestFile.c_str()) != 0) { @@ -2629,14 +3133,14 @@ void pkgAcqFile::Done(string Message,unsigned long long Size,HashStringList cons ErrorText = msg.str(); Status = StatError; Complete = false; - } + } } } /*}}}*/ // AcqFile::Failed - Failure handler /*{{{*/ // --------------------------------------------------------------------- /* Here we try other sources */ -void pkgAcqFile::Failed(string Message,pkgAcquire::MethodConfig *Cnf) +void pkgAcqFile::Failed(string const &Message, pkgAcquire::MethodConfig const * const Cnf) { Item::Failed(Message,Cnf); @@ -2653,13 +3157,11 @@ void pkgAcqFile::Failed(string Message,pkgAcquire::MethodConfig *Cnf) } /*}}}*/ -// AcqIndex::Custom600Headers - Insert custom request headers /*{{{*/ -// --------------------------------------------------------------------- -/* The only header we use is the last-modified header. */ -string pkgAcqFile::Custom600Headers() const +string pkgAcqFile::Custom600Headers() const /*{{{*/ { if (IsIndexFile) return "\nIndex-File: true"; return ""; } /*}}}*/ +pkgAcqFile::~pkgAcqFile() {} |