diff options
Diffstat (limited to 'apt-private/private-show.cc')
| -rw-r--r-- | apt-private/private-show.cc | 580 |
1 files changed, 580 insertions, 0 deletions
diff --git a/apt-private/private-show.cc b/apt-private/private-show.cc new file mode 100644 index 0000000..b69008e --- /dev/null +++ b/apt-private/private-show.cc @@ -0,0 +1,580 @@ +// Includes /*{{{*/ +#include <config.h> + +#include <apt-pkg/cachefile.h> +#include <apt-pkg/cacheset.h> +#include <apt-pkg/cmndline.h> +#include <apt-pkg/configuration.h> +#include <apt-pkg/depcache.h> +#include <apt-pkg/error.h> +#include <apt-pkg/fileutl.h> +#include <apt-pkg/indexfile.h> +#include <apt-pkg/macros.h> +#include <apt-pkg/pkgcache.h> +#include <apt-pkg/pkgrecords.h> +#include <apt-pkg/pkgsystem.h> +#include <apt-pkg/policy.h> +#include <apt-pkg/sourcelist.h> +#include <apt-pkg/strutl.h> +#include <apt-pkg/tagfile.h> + +#include <apt-private/private-cacheset.h> +#include <apt-private/private-output.h> +#include <apt-private/private-install.h> +#include <apt-private/private-show.h> + +#include <ostream> +#include <string> +#include <stdio.h> +#include <unistd.h> + +#include <apti18n.h> + /*}}}*/ + +pkgRecords::Parser &LookupParser(pkgRecords &Recs, pkgCache::VerIterator const &V, pkgCache::VerFileIterator &Vf) /*{{{*/ +{ + Vf = V.FileList(); + for (; Vf.end() == false; ++Vf) + if ((Vf.File()->Flags & pkgCache::Flag::NotSource) == 0) + break; + if (Vf.end() == true) + Vf = V.FileList(); + return Recs.Lookup(Vf); +} + /*}}}*/ +static APT_PURE char const *skipDescription(char const *DescP, size_t const Length, bool fields) /*{{{*/ +{ + auto const backup = DescP; + char const * const TagName = "\nDescription"; + size_t const TagLen = strlen(TagName); + while ((DescP = static_cast<char const *>(memchr(DescP, '\n', Length - (DescP - backup)))) != nullptr) + { + if (DescP[1] == ' ') + DescP += 2; + else if (fields && strncmp((char *)DescP, TagName, TagLen) == 0) + DescP += TagLen; + else + break; + } + if (DescP != NULL) + ++DescP; + return DescP; +} + /*}}}*/ +static APT_PURE char const *findDescriptionField(char const *DescP, size_t const Length) /*{{{*/ +{ + auto const backup = DescP; + char const * const TagName = "\nDescription"; + size_t const TagLen = strlen(TagName); + while ((DescP = static_cast<char const *>(memchr(DescP, '\n', Length - (DescP - backup)))) != nullptr) + { + if (strncmp(DescP, TagName, TagLen) == 0) + break; + else + ++DescP; + } + if (DescP != nullptr) + ++DescP; + return DescP; +} + /*}}}*/ +static APT_PURE char const *skipColonSpaces(char const *Buffer, size_t const Length) /*{{{*/ +{ + // skipping withspace before and after the field-value separating colon + char const *const Start = Buffer; + for (; isspace(*Buffer) != 0 && Length - (Buffer - Start) > 0; ++Buffer) + ; + if (*Buffer != ':') + return nullptr; + ++Buffer; + for (; isspace(*Buffer) != 0 && Length - (Buffer - Start) > 0; ++Buffer) + ; + if (Length - (Buffer - Start) <= 0) + return nullptr; + return Buffer; +} + /*}}}*/ + +bool DisplayRecordV1(pkgCacheFile &, pkgRecords &Recs, /*{{{*/ + pkgCache::VerIterator const &V, pkgCache::VerFileIterator const &Vf, + char const *Buffer, size_t Length, std::ostream &out) +{ + if (unlikely(Length < 4)) + return false; + + auto const Desc = V.TranslatedDescription(); + if (Desc.end()) + { + /* This handles the unusual case that we have no description whatsoever. + The slightly more common case of only having a short-description embedded + in the record could be handled here, but apt supports also having multiple + descriptions embedded in the record, so we deal with that case later */ + if (FileFd::Write(STDOUT_FILENO, Buffer, Length) == false) + return false; + if (strncmp((Buffer + Length - 4), "\r\n\r\n", 4) != 0 && + strncmp((Buffer + Length - 2), "\n\n", 2) != 0) + out << std::endl; + return true; + } + + // Get a pointer to start of Description field + char const *DescP = findDescriptionField(Buffer, Length); + if (DescP == nullptr) + DescP = Buffer + Length; + + // Write all but Description + size_t const untilDesc = DescP - Buffer; + if (untilDesc != 0 && FileFd::Write(STDOUT_FILENO, Buffer, untilDesc) == false) + return false; + + // Show the right description + char desctag[50]; + auto const langcode = Desc.LanguageCode(); + if (strcmp(langcode, "") == 0) + strcpy(desctag, "\nDescription"); + else + snprintf(desctag, sizeof(desctag), "\nDescription-%s", langcode); + + out << desctag + 1 << ": " << std::flush; + auto const Df = Desc.FileList(); + if (Df.end() == false) + { + if (Desc.FileList()->File == Vf->File) + { + /* If we have the file already open look in the buffer for the + description we want to display. Note that this might not be the + only one we can encounter in this record */ + char const *Start = DescP; + do + { + if (strncmp(Start, desctag + 1, strlen(desctag) - 1) != 0) + continue; + Start += strlen(desctag) - 1; + Start = skipColonSpaces(Start, Length - (Start - Buffer)); + if (Start == nullptr) + continue; + char const *End = skipDescription(Start, Length - (Start - Buffer), false); + if (likely(End != nullptr)) + FileFd::Write(STDOUT_FILENO, Start, End - (Start + 1)); + break; + } while ((Start = findDescriptionField(Start, Length - (Start - Buffer))) != nullptr); + } + else + { + pkgRecords::Parser &P = Recs.Lookup(Df); + out << P.LongDesc(); + } + } + + out << std::endl << "Description-md5: " << Desc.md5() << std::endl; + + // Find the first field after the description (if there is any) + DescP = skipDescription(DescP, Length - (DescP - Buffer), true); + + // write the rest of the buffer, but skip mixed in Descriptions* fields + while (DescP != nullptr) + { + char const *const Start = DescP; + char const *End = findDescriptionField(DescP, Length - (DescP - Buffer)); + if (End == nullptr) + { + DescP = nullptr; + End = Buffer + Length - 1; + size_t endings = 0; + while (*End == '\n') + { + --End; + if (*End == '\r') + --End; + ++endings; + } + if (endings >= 1) + { + ++End; + if (*End == '\r') + ++End; + } + ++End; + } + else + DescP = skipDescription(End + strlen("Description"), Length - (End - Buffer), true); + + size_t const length = End - Start; + if (length != 0 && FileFd::Write(STDOUT_FILENO, Start, length) == false) + return false; + } + // write a final newline after the last field + out << std::endl; + + return true; +} + /*}}}*/ +static bool DisplayRecordV2(pkgCacheFile &CacheFile, pkgRecords &Recs, /*{{{*/ + pkgCache::VerIterator const &V, pkgCache::VerFileIterator const &Vf, + char const *Buffer, size_t const Length, std::ostream &out) +{ + // Check and load the package list file + pkgCache::PkgFileIterator I = Vf.File(); + + // find matching sources.list metaindex + pkgSourceList *SrcList = CacheFile.GetSourceList(); + pkgIndexFile *Index; + if (SrcList->FindIndex(I, Index) == false && + _system->FindIndex(I, Index) == false) + return _error->Error("Can not find indexfile for Package %s (%s)", + V.ParentPkg().Name(), V.VerStr()); + std::string source_index_file = Index->Describe(true); + + // Read the record + pkgTagSection Tags; + if (Tags.Scan(Buffer, Length, true) == false) + return _error->Error("Internal Error, Unable to parse a package record"); + + // make size nice + std::string installed_size; + if (Tags.FindULL("Installed-Size") > 0) + strprintf(installed_size, "%sB", SizeToStr(Tags.FindULL("Installed-Size") * 1024).c_str()); + else + installed_size = _("unknown"); + std::string package_size; + if (Tags.FindULL("Size") > 0) + strprintf(package_size, "%sB", SizeToStr(Tags.FindULL("Size")).c_str()); + else + package_size = _("unknown"); + + const char *manual_installed = nullptr; + if (V.ParentPkg().CurrentVer() == V) + { + pkgDepCache *depCache = CacheFile.GetDepCache(); + if (unlikely(depCache == nullptr)) + return false; + pkgDepCache::StateCache &state = (*depCache)[V.ParentPkg()]; + manual_installed = !(state.Flags & pkgCache::Flag::Auto) ? "yes" : "no"; + } + + // FIXME: add verbose that does not do the removal of the tags? + std::vector<pkgTagSection::Tag> RW; + // delete, apt-cache show has this info and most users do not care + RW.push_back(pkgTagSection::Tag::Remove("MD5sum")); + RW.push_back(pkgTagSection::Tag::Remove("SHA1")); + RW.push_back(pkgTagSection::Tag::Remove("SHA256")); + RW.push_back(pkgTagSection::Tag::Remove("SHA512")); + RW.push_back(pkgTagSection::Tag::Remove("Filename")); + RW.push_back(pkgTagSection::Tag::Remove("Multi-Arch")); + RW.push_back(pkgTagSection::Tag::Remove("Architecture")); + RW.push_back(pkgTagSection::Tag::Remove("Conffiles")); + // we use the translated description + RW.push_back(pkgTagSection::Tag::Remove("Description")); + RW.push_back(pkgTagSection::Tag::Remove("Description-md5")); + // improve + RW.push_back(pkgTagSection::Tag::Rewrite("Package", V.ParentPkg().FullName(true))); + RW.push_back(pkgTagSection::Tag::Rewrite("Installed-Size", installed_size)); + RW.push_back(pkgTagSection::Tag::Remove("Size")); + RW.push_back(pkgTagSection::Tag::Rewrite("Download-Size", package_size)); + // add + if (manual_installed != nullptr) + RW.push_back(pkgTagSection::Tag::Rewrite("APT-Manual-Installed", manual_installed)); + RW.push_back(pkgTagSection::Tag::Rewrite("APT-Sources", source_index_file)); + + FileFd stdoutfd; + if (stdoutfd.OpenDescriptor(STDOUT_FILENO, FileFd::WriteOnly, false) == false || + Tags.Write(stdoutfd, TFRewritePackageOrder, RW) == false || stdoutfd.Close() == false) + return _error->Error("Internal Error, Unable to parse a package record"); + + // write the description + // FIXME: show (optionally) all available translations(?) + pkgCache::DescIterator Desc = V.TranslatedDescription(); + if (Desc.end() == false) + { + pkgRecords::Parser &P = Recs.Lookup(Desc.FileList()); + out << "Description: " << P.LongDesc(); + } + + // write a final newline (after the description) + out << std::endl << std::endl; + + return true; +} + /*}}}*/ +bool ShowPackage(CommandLine &CmdL) /*{{{*/ +{ + pkgCacheFile CacheFile; + auto VolatileCmdL = GetAllPackagesAsPseudo(CacheFile.GetSourceList(), CmdL, AddVolatileBinaryFile, ""); + + if (unlikely(CacheFile.GetPkgCache() == nullptr)) + return false; + CacheSetHelperVirtuals helper(true, GlobalError::NOTICE); + APT::CacheSetHelper::VerSelector const select = _config->FindB("APT::Cache::AllVersions", true) ? + APT::CacheSetHelper::ALL : APT::CacheSetHelper::CANDIDATE; + if (select == APT::CacheSetHelper::CANDIDATE && CacheFile.GetDepCache() == nullptr) + return false; + + APT::VersionList verset; + size_t normalPackages = 0; + for (auto const &I: VolatileCmdL) + { + if (I.index == -1) + { + APT::VersionContainerInterface::FromString(&verset, CacheFile, I.name, select, helper); + ++normalPackages; + } + else + { + if (select != APT::CacheSetHelper::CANDIDATE && unlikely(CacheFile.GetDepCache() == nullptr)) + return false; + pkgCache::PkgIterator const P = CacheFile->FindPkg(I.name); + if (unlikely(P.end())) + continue; + + // Set any version providing the .deb as the candidate. + for (auto Prv = P.ProvidesList(); Prv.end() == false; ++Prv) + { + if (I.release.empty()) + CacheFile->SetCandidateVersion(Prv.OwnerVer()); + else + CacheFile->SetCandidateRelease(Prv.OwnerVer(), I.release); + + // via cacheset to have our usual handling + APT::VersionContainerInterface::FromPackage(&verset, CacheFile, Prv.OwnerPkg(), APT::CacheSetHelper::CANDIDATE, helper); + } + } + } + + int const ShowVersion = _config->FindI("APT::Cache::Show::Version", 1); + pkgRecords Recs(CacheFile); + for (APT::VersionList::const_iterator Ver = verset.begin(); Ver != verset.end(); ++Ver) + { + pkgCache::VerFileIterator Vf; + auto &Parser = LookupParser(Recs, Ver, Vf); + char const *Start, *Stop; + Parser.GetRec(Start, Stop); + size_t const Length = Stop - Start; + + if (ShowVersion <= 1) + { + if (DisplayRecordV1(CacheFile, Recs, Ver, Vf, Start, Length, std::cout) == false) + return false; + } + else if (DisplayRecordV2(CacheFile, Recs, Ver, Vf, Start, Length + 1, c1out) == false) + return false; + } + + if (select == APT::CacheSetHelper::CANDIDATE && normalPackages != 0) + { + APT::VersionList verset_all; + for (auto const &I: VolatileCmdL) + { + if (I.index == -1) + APT::VersionContainerInterface::FromString(&verset_all, CacheFile, I.name, APT::CacheSetHelper::ALL, helper); + else + { + pkgCache::PkgIterator const P = CacheFile->FindPkg(I.name); + if (unlikely(P.end())) + continue; + + // Set any version providing the .deb as the candidate. + for (auto Prv = P.ProvidesList(); Prv.end() == false; ++Prv) + { + if (I.release.empty()) + CacheFile->SetCandidateVersion(Prv.OwnerVer()); + else + CacheFile->SetCandidateRelease(Prv.OwnerVer(), I.release); + + // via cacheset to have our usual virtual handling + APT::VersionContainerInterface::FromPackage(&verset_all, CacheFile, Prv.OwnerPkg(), APT::CacheSetHelper::CANDIDATE, helper); + } + } + } + + int const records = verset_all.size() - verset.size(); + if (records > 0) + _error->Notice(P_("There is %i additional record. Please use the '-a' switch to see it", "There are %i additional records. Please use the '-a' switch to see them.", records), records); + } + + if (_config->FindB("APT::Cache::ShowVirtuals", false) == true) + for (APT::PackageSet::const_iterator Pkg = helper.virtualPkgs.begin(); + Pkg != helper.virtualPkgs.end(); ++Pkg) + { + c1out << "Package: " << Pkg.FullName(true) << std::endl; + c1out << "State: " << _("not a real package (virtual)") << std::endl; + // FIXME: show providers, see private-cacheset.h + // CacheSetHelperAPTGet::showVirtualPackageErrors() + } + + if (verset.empty() == true) + { + if (helper.virtualPkgs.empty() == true) + return _error->Error(_("No packages found")); + else + _error->Notice(_("No packages found")); + } + + return true; +} + /*}}}*/ +static std::string Sha1FromString(std::string const &input) /*{{{*/ +{ + // XXX: move to hashes.h: HashString::FromString() ? + SHA1Summation sha1; + sha1.Add(input.c_str(), input.length()); + return sha1.Result().Value(); +} + /*}}}*/ +bool ShowSrcPackage(CommandLine &CmdL) /*{{{*/ +{ + pkgCacheFile CacheFile; + pkgSourceList *List = CacheFile.GetSourceList(); + if (unlikely(List == NULL)) + return false; + + // Create the text record parsers + pkgSrcRecords SrcRecs(*List); + if (_error->PendingError() == true) + return false; + + bool found = false; + // avoid showing identical records + std::set<std::string> seen; + for (const char **I = CmdL.FileList + 1; *I != 0; I++) + { + SrcRecs.Restart(); + + pkgSrcRecords::Parser *Parse; + bool found_this = false; + while ((Parse = SrcRecs.Find(*I,false)) != 0) { + // SrcRecs.Find() will find both binary and source names + if (_config->FindB("APT::Cache::Only-Source", false) == true) + if (Parse->Package() != *I) + continue; + std::string sha1str = Sha1FromString(Parse->AsStr()); + if (std::find(seen.begin(), seen.end(), sha1str) == seen.end()) + { + std::cout << Parse->AsStr() << std::endl;; + found = true; + found_this = true; + seen.insert(sha1str); + } + } + if (found_this == false) { + _error->Warning(_("Unable to locate package %s"),*I); + continue; + } + } + if (found == false) + _error->Notice(_("No packages found")); + return true; +} + /*}}}*/ +// Policy - Show the results of the preferences file /*{{{*/ +bool Policy(CommandLine &CmdL) +{ + pkgCacheFile CacheFile; + pkgSourceList const * const SrcList = CacheFile.GetSourceList(); + if (unlikely(SrcList == nullptr)) + return false; + pkgCache * const Cache = CacheFile.GetPkgCache(); + if (unlikely(Cache == nullptr)) + return false; + pkgPolicy * const Plcy = CacheFile.GetPolicy(); + if (unlikely(Plcy == nullptr)) + return false; + + // Print out all of the package files + if (CmdL.FileList[1] == 0) + { + std::cout << _("Package files:") << std::endl; + for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F.end() == false; ++F) + { + if (F.Flagged(pkgCache::Flag::NoPackages)) + continue; + // Locate the associated index files so we can derive a description + pkgIndexFile *Indx; + if (SrcList->FindIndex(F,Indx) == false && + _system->FindIndex(F,Indx) == false) + return _error->Error(_("Cache is out of sync, can't x-ref a package file")); + + printf("%4i %s\n", + Plcy->GetPriority(F),Indx->Describe(true).c_str()); + + // Print the reference information for the package + std::string Str = F.RelStr(); + if (Str.empty() == false) + printf(" release %s\n",F.RelStr().c_str()); + if (F.Site() != 0 && F.Site()[0] != 0) + printf(" origin %s\n",F.Site()); + } + + // Show any packages have explicit pins + std::cout << _("Pinned packages:") << std::endl; + pkgCache::PkgIterator I = Cache->PkgBegin(); + for (;I.end() != true; ++I) + { + for (pkgCache::VerIterator V = I.VersionList(); !V.end(); ++V) { + auto Prio = Plcy->GetPriority(V, false); + if (Prio == 0) + continue; + + std::cout << " "; + // Print the package name and the version we are forcing to + ioprintf(std::cout, _("%s -> %s with priority %d\n"), I.FullName(true).c_str(), V.VerStr(), Prio); + } + } + return true; + } + + char const * const msgInstalled = _(" Installed: "); + char const * const msgCandidate = _(" Candidate: "); + short const InstalledLessCandidate = + mbstowcs(NULL, msgInstalled, 0) - mbstowcs(NULL, msgCandidate, 0); + short const deepInstalled = + (InstalledLessCandidate < 0 ? (InstalledLessCandidate*-1) : 0) - 1; + short const deepCandidate = + (InstalledLessCandidate > 0 ? (InstalledLessCandidate) : 0) - 1; + + // Print out detailed information for each package + APT::CacheSetHelper helper(true, GlobalError::NOTICE); + APT::PackageList pkgset = APT::PackageList::FromCommandLine(CacheFile, CmdL.FileList + 1, helper); + for (APT::PackageList::const_iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg) + { + std::cout << Pkg.FullName(true) << ":" << std::endl; + + // Installed version + std::cout << msgInstalled << OutputInDepth(deepInstalled, " "); + if (Pkg->CurrentVer == 0) + std::cout << _("(none)") << std::endl; + else + std::cout << Pkg.CurrentVer().VerStr() << std::endl; + + // Candidate Version + std::cout << msgCandidate << OutputInDepth(deepCandidate, " "); + pkgCache::VerIterator V = Plcy->GetCandidateVer(Pkg); + if (V.end() == true) + std::cout << _("(none)") << std::endl; + else + std::cout << V.VerStr() << std::endl; + + // Show the priority tables + std::cout << _(" Version table:") << std::endl; + for (V = Pkg.VersionList(); V.end() == false; ++V) + { + if (Pkg.CurrentVer() == V) + std::cout << " *** " << V.VerStr(); + else + std::cout << " " << V.VerStr(); + + std::cout << " " << Plcy->GetPriority(V) << std::endl; + for (pkgCache::VerFileIterator VF = V.FileList(); VF.end() == false; ++VF) + { + // Locate the associated index files so we can derive a description + pkgIndexFile *Indx; + if (SrcList->FindIndex(VF.File(),Indx) == false && + _system->FindIndex(VF.File(),Indx) == false) + return _error->Error(_("Cache is out of sync, can't x-ref a package file")); + printf(" %4i %s\n",Plcy->GetPriority(VF.File()), + Indx->Describe(true).c_str()); + } + } + } + return true; +} + /*}}}*/ |