From 68134bda8868a8614edf137aad7e9be61cd2a6ee Mon Sep 17 00:00:00 2001 From: David Kalnischkies Date: Wed, 12 Mar 2014 17:55:08 +0100 Subject: abstract version hash comparison a bit In #737085 we see that apt can be confused if informations about versions only differ slightly. This commit adds a way of at least adding a few more data points with the next abi break to help a bit with it. Git-Dch: Ignore --- apt-pkg/deb/deblistparser.cc | 21 +++++++++++++++++++++ apt-pkg/deb/deblistparser.h | 3 +++ apt-pkg/pkgcache.cc | 4 ++++ apt-pkg/pkgcachegen.cc | 14 ++++++++++---- apt-pkg/pkgcachegen.h | 9 +++++++++ 5 files changed, 47 insertions(+), 4 deletions(-) diff --git a/apt-pkg/deb/deblistparser.cc b/apt-pkg/deb/deblistparser.cc index 18b8b931d..a1bcfb710 100644 --- a/apt-pkg/deb/deblistparser.cc +++ b/apt-pkg/deb/deblistparser.cc @@ -938,3 +938,24 @@ unsigned char debListParser::GetPrio(string Str) return Out; } /*}}}*/ +#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13) +bool debListParser::SameVersion(unsigned short const Hash, /*{{{*/ + pkgCache::VerIterator const &Ver) +{ + if (pkgCacheGenerator::ListParser::SameVersion(Hash, Ver) == false) + return false; + // status file has no (Download)Size, but all others are fair game + // status file is parsed last, so the first version we encounter is + // probably also the version we have downloaded + unsigned long long const Size = Section.FindULL("Size"); + if (Size != 0 && Size != Ver->Size) + return false; + // available everywhere, but easier to check here than to include in VersionHash + unsigned char MultiArch = ParseMultiArch(false); + if (MultiArch != Ver->MultiArch) + return false; + // for all practical proposes (we can check): same version + return true; +} + /*}}}*/ +#endif diff --git a/apt-pkg/deb/deblistparser.h b/apt-pkg/deb/deblistparser.h index 03733ae8c..286244cc9 100644 --- a/apt-pkg/deb/deblistparser.h +++ b/apt-pkg/deb/deblistparser.h @@ -70,6 +70,9 @@ class debListParser : public pkgCacheGenerator::ListParser virtual std::string DescriptionLanguage(); virtual MD5SumValue Description_md5(); virtual unsigned short VersionHash(); +#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13) + virtual bool SameVersion(unsigned short const Hash, pkgCache::VerIterator const &Ver); +#endif virtual bool UsePackage(pkgCache::PkgIterator &Pkg, pkgCache::VerIterator &Ver); virtual unsigned long Offset() {return iOffset;}; diff --git a/apt-pkg/pkgcache.cc b/apt-pkg/pkgcache.cc index a19b9571c..91b75f52e 100644 --- a/apt-pkg/pkgcache.cc +++ b/apt-pkg/pkgcache.cc @@ -55,7 +55,11 @@ pkgCache::Header::Header() /* Whenever the structures change the major version should be bumped, whenever the generator changes the minor version should be bumped. */ MajorVersion = 8; +#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13) + MinorVersion = 2; +#else MinorVersion = 1; +#endif Dirty = false; HeaderSz = sizeof(pkgCache::Header); diff --git a/apt-pkg/pkgcachegen.cc b/apt-pkg/pkgcachegen.cc index 525f1dfb4..810f0b022 100644 --- a/apt-pkg/pkgcachegen.cc +++ b/apt-pkg/pkgcachegen.cc @@ -356,7 +356,7 @@ bool pkgCacheGenerator::MergeListVersion(ListParser &List, pkgCache::PkgIterator map_ptrloc *LastVer = &Pkg->VersionList; void const * oldMap = Map.Data(); - unsigned long const Hash = List.VersionHash(); + unsigned short const Hash = List.VersionHash(); if (Ver.end() == false) { /* We know the list is sorted so we use that fact in the search. @@ -369,7 +369,7 @@ bool pkgCacheGenerator::MergeListVersion(ListParser &List, pkgCache::PkgIterator if (Res > 0) break; // Versionstrings are equal - is hash also equal? - if (Res == 0 && Ver->Hash == Hash) + if (Res == 0 && List.SameVersion(Hash, Ver) == true) break; // proceed with the next till we have either the right // or we found another version (which will be lower) @@ -558,12 +558,12 @@ bool pkgCacheGenerator::MergeFileProvides(ListParser &List) if (Counter % 100 == 0 && Progress != 0) Progress->Progress(List.Offset()); - unsigned long Hash = List.VersionHash(); + unsigned short Hash = List.VersionHash(); pkgCache::VerIterator Ver = Pkg.VersionList(); Dynamic DynVer(Ver); for (; Ver.end() == false; ++Ver) { - if (Ver->Hash == Hash && Version == Ver.VerStr()) + if (List.SameVersion(Hash, Ver) == true && Version == Ver.VerStr()) { if (List.CollectFileProvides(Cache,Ver) == false) return _error->Error(_("Error occurred while processing %s (%s%d)"), @@ -1051,6 +1051,12 @@ bool pkgCacheGenerator::ListParser::NewProvides(pkgCache::VerIterator &Ver, return true; } /*}}}*/ +bool pkgCacheGenerator::ListParser::SameVersion(unsigned short const Hash,/*{{{*/ + pkgCache::VerIterator const &Ver) +{ + return Hash == Ver->Hash; +} + /*}}}*/ // CacheGenerator::SelectFile - Select the current file being parsed /*{{{*/ // --------------------------------------------------------------------- /* This is used to select which file is to be associated with all newly diff --git a/apt-pkg/pkgcachegen.h b/apt-pkg/pkgcachegen.h index 898b34358..5994dab9f 100644 --- a/apt-pkg/pkgcachegen.h +++ b/apt-pkg/pkgcachegen.h @@ -164,6 +164,15 @@ class pkgCacheGenerator::ListParser virtual std::string DescriptionLanguage() = 0; virtual MD5SumValue Description_md5() = 0; virtual unsigned short VersionHash() = 0; + /** compare currently parsed version with given version + * + * \param Hash of the currently parsed version + * \param Ver to compare with + */ +#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13) + virtual +#endif + APT_PURE bool SameVersion(unsigned short const Hash, pkgCache::VerIterator const &Ver); virtual bool UsePackage(pkgCache::PkgIterator &Pkg, pkgCache::VerIterator &Ver) = 0; virtual unsigned long Offset() = 0; -- cgit v1.2.3