X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/ea54214002c09eeb4dd498d97a564471ec9993c5..3b4d8136e78b9f2a70431ece4c850861d90e8bb1:/apt-pkg/pkgcache.cc diff --git a/apt-pkg/pkgcache.cc b/apt-pkg/pkgcache.cc index 0a81cb791..997c70768 100644 --- a/apt-pkg/pkgcache.cc +++ b/apt-pkg/pkgcache.cc @@ -85,6 +85,8 @@ pkgCache::Header::Header() memset(PkgHashTable,0,sizeof(PkgHashTable)); memset(GrpHashTable,0,sizeof(GrpHashTable)); memset(Pools,0,sizeof(Pools)); + + CacheFileSize = 0; } /*}}}*/ // Cache::Header::CheckSizes - Check if the two headers have same *sz /*{{{*/ @@ -156,6 +158,9 @@ bool pkgCache::ReMap(bool const &Errorchecks) HeaderP->CheckSizes(DefHeader) == false) return _error->Error(_("The package cache file is an incompatible version")); + if (Map.Size() < HeaderP->CacheFileSize) + return _error->Error(_("The package cache file is corrupted, it is too small")); + // Locate our VS.. if (HeaderP->VerSysName == 0 || (VS = pkgVersioningSystem::GetVS(StrP + HeaderP->VerSysName)) == 0) @@ -176,7 +181,7 @@ bool pkgCache::ReMap(bool const &Errorchecks) unsigned long pkgCache::sHash(const string &Str) const { unsigned long Hash = 0; - for (string::const_iterator I = Str.begin(); I != Str.end(); I++) + for (string::const_iterator I = Str.begin(); I != Str.end(); ++I) Hash = 5*Hash + tolower_ascii(*I); return Hash % _count(HeaderP->PkgHashTable); } @@ -184,7 +189,7 @@ unsigned long pkgCache::sHash(const string &Str) const unsigned long pkgCache::sHash(const char *Str) const { unsigned long Hash = 0; - for (const char *I = Str; *I != 0; I++) + for (const char *I = Str; *I != 0; ++I) Hash = 5*Hash + tolower_ascii(*I); return Hash % _count(HeaderP->PkgHashTable); } @@ -485,7 +490,7 @@ pkgCache::PkgIterator::CurVersion() const if they provide no new information (e.g. there is no newer version than candidate) If no version and/or section can be found "none" is used. */ std::ostream& -operator<<(ostream& out, pkgCache::PkgIterator Pkg) +operator<<(std::ostream& out, pkgCache::PkgIterator Pkg) { if (Pkg.end() == true) return out << "invalid package"; @@ -570,7 +575,7 @@ bool pkgCache::DepIterator::SmartTargetPkg(PkgIterator &Result) const virtual package libc-dev which is provided by libc5-dev and libc6-dev we must ignore libc5-dev when considering the provides list. */ PrvIterator PStart = Result.ProvidesList(); - for (; PStart.end() != true && PStart.OwnerPkg() == ParentPkg(); PStart++); + for (; PStart.end() != true && PStart.OwnerPkg() == ParentPkg(); ++PStart); // Nothing but indirect self provides if (PStart.end() == true) @@ -578,7 +583,7 @@ bool pkgCache::DepIterator::SmartTargetPkg(PkgIterator &Result) const // Check for single packages in the provides list PrvIterator P = PStart; - for (; P.end() != true; P++) + for (; P.end() != true; ++P) { // Skip over self provides if (P.OwnerPkg() == ParentPkg()) @@ -612,30 +617,28 @@ pkgCache::Version **pkgCache::DepIterator::AllTargets() const PkgIterator DPkg = TargetPkg(); // Walk along the actual package providing versions - for (VerIterator I = DPkg.VersionList(); I.end() == false; I++) + for (VerIterator I = DPkg.VersionList(); I.end() == false; ++I) { - if (Owner->VS->CheckDep(I.VerStr(),S->CompareOp,TargetVer()) == false) + if (IsIgnorable(I.ParentPkg()) == true) continue; - if (IsNegative() == true && - ParentPkg() == I.ParentPkg()) + if (Owner->VS->CheckDep(I.VerStr(),S->CompareOp,TargetVer()) == false) continue; - + Size++; if (Res != 0) *End++ = I; } // Follow all provides - for (PrvIterator I = DPkg.ProvidesList(); I.end() == false; I++) + for (PrvIterator I = DPkg.ProvidesList(); I.end() == false; ++I) { - if (Owner->VS->CheckDep(I.ProvideVersion(),S->CompareOp,TargetVer()) == false) + if (IsIgnorable(I) == true) continue; - - if (IsNegative() == true && - ParentPkg() == I.OwnerPkg()) + + if (Owner->VS->CheckDep(I.ProvideVersion(),S->CompareOp,TargetVer()) == false) continue; - + Size++; if (Res != 0) *End++ = I.OwnerVer(); @@ -677,10 +680,38 @@ void pkgCache::DepIterator::GlobOr(DepIterator &Start,DepIterator &End) } } /*}}}*/ +// DepIterator::IsIgnorable - should this packag/providr be ignored? /*{{{*/ +// --------------------------------------------------------------------- +/* Deps like self-conflicts should be ignored as well as implicit conflicts + on virtual packages. */ +bool pkgCache::DepIterator::IsIgnorable(PkgIterator const &Pkg) const +{ + if (ParentPkg() == TargetPkg()) + return IsNegative(); + + return false; +} +bool pkgCache::DepIterator::IsIgnorable(PrvIterator const &Prv) const +{ + if (IsNegative() == false) + return false; + + PkgIterator const Pkg = ParentPkg(); + /* Provides may never be applied against the same package (or group) + if it is a conflicts. See the comment above. */ + if (Prv.OwnerPkg()->Group == Pkg->Group) + return true; + // Implicit group-conflicts should not be applied on providers of other groups + if (Pkg->Group == TargetPkg()->Group && Prv.OwnerPkg()->Group != Pkg->Group) + return true; + + return false; +} + /*}}}*/ // ostream operator to handle string representation of a dependecy /*{{{*/ // --------------------------------------------------------------------- /* */ -std::ostream& operator<<(ostream& out, pkgCache::DepIterator D) +std::ostream& operator<<(std::ostream& out, pkgCache::DepIterator D) { if (D.end() == true) return out << "invalid dependency"; @@ -718,7 +749,7 @@ int pkgCache::VerIterator::CompareVer(const VerIterator &B) const /* Start at A and look for B. If B is found then A > B otherwise B was before A so A < B */ VerIterator I = *this; - for (;I.end() == false; I++) + for (;I.end() == false; ++I) if (I == B) return 1; return -1; @@ -730,7 +761,7 @@ int pkgCache::VerIterator::CompareVer(const VerIterator &B) const bool pkgCache::VerIterator::Downloadable() const { VerFileIterator Files = FileList(); - for (; Files.end() == false; Files++) + for (; Files.end() == false; ++Files) if ((Files.File()->Flags & pkgCache::Flag::NotSource) != pkgCache::Flag::NotSource) return true; return false; @@ -743,7 +774,7 @@ bool pkgCache::VerIterator::Downloadable() const bool pkgCache::VerIterator::Automatic() const { VerFileIterator Files = FileList(); - for (; Files.end() == false; Files++) + for (; Files.end() == false; ++Files) // Do not check ButAutomaticUpgrades here as it is kind of automatic… if ((Files.File()->Flags & pkgCache::Flag::NotAutomatic) != pkgCache::Flag::NotAutomatic) return true; @@ -758,7 +789,7 @@ pkgCache::VerFileIterator pkgCache::VerIterator::NewestFile() const { VerFileIterator Files = FileList(); VerFileIterator Highest = Files; - for (; Files.end() == false; Files++) + for (; Files.end() == false; ++Files) { if (Owner->VS->CmpReleaseVer(Files.File().Version(),Highest.File().Version()) > 0) Highest = Files; @@ -775,7 +806,7 @@ string pkgCache::VerIterator::RelStr() const { bool First = true; string Res; - for (pkgCache::VerFileIterator I = this->FileList(); I.end() == false; I++) + for (pkgCache::VerFileIterator I = this->FileList(); I.end() == false; ++I) { // Do not print 'not source' entries' pkgCache::PkgFileIterator File = I.File(); @@ -784,7 +815,7 @@ string pkgCache::VerIterator::RelStr() const // See if we have already printed this out.. bool Seen = false; - for (pkgCache::VerFileIterator J = this->FileList(); I != J; J++) + for (pkgCache::VerFileIterator J = this->FileList(); I != J; ++J) { pkgCache::PkgFileIterator File2 = J.File(); if (File2->Label == 0 || File->Label == 0) @@ -885,15 +916,26 @@ pkgCache::DescIterator pkgCache::VerIterator::TranslatedDescription() const { std::vector const lang = APT::Configuration::getLanguages(); for (std::vector::const_iterator l = lang.begin(); - l != lang.end(); l++) + l != lang.end(); ++l) { pkgCache::DescIterator Desc = DescriptionList(); for (; Desc.end() == false; ++Desc) - if (*l == Desc.LanguageCode() || - (*l == "en" && strcmp(Desc.LanguageCode(),"") == 0)) + if (*l == Desc.LanguageCode()) break; if (Desc.end() == true) - continue; + { + if (*l == "en") + { + Desc = DescriptionList(); + for (; Desc.end() == false; ++Desc) + if (strcmp(Desc.LanguageCode(), "") == 0) + break; + if (Desc.end() == true) + continue; + } + else + continue; + } return Desc; } for (pkgCache::DescIterator Desc = DescriptionList();