1 files changed, 891 insertions, 0 deletions

diff --git a/apt-private/private-source.cc b/apt-private/private-source.cc
new file mode 100644
index 0000000..9b47ce3
--- /dev/null
+++ b/apt-private/private-source.cc
@@ -0,0 +1,891 @@
+// Include Files							/*{{{*/
+#include <config.h>
+
+#include <apt-pkg/acquire-item.h>
+#include <apt-pkg/acquire.h>
+#include <apt-pkg/algorithms.h>
+#include <apt-pkg/aptconfiguration.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/hashes.h>
+#include <apt-pkg/indexfile.h>
+#include <apt-pkg/metaindex.h>
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/policy.h>
+#include <apt-pkg/sourcelist.h>
+#include <apt-pkg/srcrecords.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/version.h>
+
+#include <apt-private/private-cachefile.h>
+#include <apt-private/private-cacheset.h>
+#include <apt-private/private-download.h>
+#include <apt-private/private-install.h>
+#include <apt-private/private-source.h>
+
+#include <apt-pkg/debindexfile.h>
+#include <apt-pkg/deblistparser.h>
+
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <iostream>
+#include <set>
+#include <sstream>
+#include <string>
+#include <vector>
+
+#include <apti18n.h>
+									/*}}}*/
+
+// GetReleaseFileForSourceRecord - Return Suite for the given srcrecord	/*{{{*/
+static pkgCache::RlsFileIterator GetReleaseFileForSourceRecord(CacheFile &CacheFile,
+      pkgSourceList const * const SrcList, pkgSrcRecords::Parser const * const Parse)
+{
+   // try to find release
+   const pkgIndexFile& CurrentIndexFile = Parse->Index();
+
+   for (pkgSourceList::const_iterator S = SrcList->begin(); 
+	 S != SrcList->end(); ++S)
+   {
+      std::vector<pkgIndexFile *> *Indexes = (*S)->GetIndexFiles();
+      for (std::vector<pkgIndexFile *>::const_iterator IF = Indexes->begin();
+	    IF != Indexes->end(); ++IF)
+      {
+	 if (&CurrentIndexFile == (*IF))
+	    return (*S)->FindInCache(CacheFile, false);
+      }
+   }
+   return pkgCache::RlsFileIterator(CacheFile);
+}
+									/*}}}*/
+// FindSrc - Find a source record					/*{{{*/
+static pkgSrcRecords::Parser *FindSrc(const char *Name,
+			       pkgSrcRecords &SrcRecs,std::string &Src,
+			       CacheFile &Cache)
+{
+   std::string VerTag, UserRequestedVerTag;
+   std::string ArchTag = "";
+   std::string RelTag = _config->Find("APT::Default-Release");
+   std::string TmpSrc = Name;
+
+   // extract release
+   size_t found = TmpSrc.find_last_of("/");
+   if (found != std::string::npos)
+   {
+      RelTag = TmpSrc.substr(found+1);
+      TmpSrc = TmpSrc.substr(0,found);
+   }
+   // extract the version
+   found = TmpSrc.find_last_of("=");
+   if (found != std::string::npos)
+   {
+      VerTag = UserRequestedVerTag = TmpSrc.substr(found+1);
+      TmpSrc = TmpSrc.substr(0,found);
+   }
+   // extract arch
+   found = TmpSrc.find_last_of(":");
+   if (found != std::string::npos)
+   {
+      ArchTag = TmpSrc.substr(found+1);
+      TmpSrc = TmpSrc.substr(0,found);
+   }
+
+   /* Lookup the version of the package we would install if we were to
+      install a version and determine the source package name, then look
+      in the archive for a source package of the same name. */
+   bool MatchSrcOnly = _config->FindB("APT::Get::Only-Source");
+   pkgCache::PkgIterator Pkg;
+   if (ArchTag != "")
+      Pkg = Cache.GetPkgCache()->FindPkg(TmpSrc, ArchTag);
+   else
+      Pkg = Cache.GetPkgCache()->FindPkg(TmpSrc);
+
+   // if we can't find a package but the user qualified with a arch,
+   // error out here
+   if (Pkg.end() && ArchTag != "")
+   {
+      Src = Name;
+      _error->Error(_("Can not find a package for architecture '%s'"),
+	    ArchTag.c_str());
+      return 0;
+   }
+
+   if (MatchSrcOnly == false && Pkg.end() == false)
+   {
+      if(VerTag != "" || RelTag != "" || ArchTag != "")
+      {
+	 bool fuzzy = false;
+	 // we have a default release, try to locate the pkg. we do it like
+	 // this because GetCandidateVer() will not "downgrade", that means
+	 // "apt-get source -t stable apt" won't work on a unstable system
+	 for (pkgCache::VerIterator Ver = Pkg.VersionList();; ++Ver)
+	 {
+	    // try first only exact matches, later fuzzy matches
+	    if (Ver.end() == true)
+	    {
+	       if (fuzzy == true)
+		  break;
+	       fuzzy = true;
+	       Ver = Pkg.VersionList();
+	       // exit right away from the Pkg.VersionList() loop if we
+	       // don't have any versions
+	       if (Ver.end() == true)
+		  break;
+	    }
+
+	    // ignore arches that are not for us
+	    if (ArchTag != "" && Ver.Arch() != ArchTag)
+	       continue;
+
+	    // pick highest version for the arch unless the user wants
+	    // something else
+	    if (ArchTag != "" && VerTag == "" && RelTag == "")
+	       if(Cache.GetPkgCache()->VS->CmpVersion(VerTag, Ver.VerStr()) < 0)
+		  VerTag = Ver.VerStr();
+
+	    // We match against a concrete version (or a part of this version)
+	    if (VerTag.empty() == false &&
+		  (fuzzy == true || Cache.GetPkgCache()->VS->CmpVersion(VerTag, Ver.VerStr()) != 0) && // exact match
+		  (fuzzy == false || strncmp(VerTag.c_str(), Ver.VerStr(), VerTag.size()) != 0)) // fuzzy match
+	       continue;
+
+	    for (pkgCache::VerFileIterator VF = Ver.FileList();
+		  VF.end() == false; ++VF)
+	    {
+	       /* If this is the status file, and the current version is not the
+		  version in the status file (ie it is not installed, or somesuch)
+		  then it is not a candidate for installation, ever. This weeds
+		  out bogus entries that may be due to config-file states, or
+		  other. */
+	       if ((VF.File()->Flags & pkgCache::Flag::NotSource) ==
+		     pkgCache::Flag::NotSource && Pkg.CurrentVer() != Ver)
+		  continue;
+
+	       // or we match against a release
+	       if(VerTag.empty() == false ||
+		     (VF.File().Archive() != 0 && VF.File().Archive() == RelTag) ||
+		     (VF.File().Codename() != 0 && VF.File().Codename() == RelTag))
+	       {
+		  // the Version we have is possibly fuzzy or includes binUploads,
+		  // so we use the Version of the SourcePkg (empty if same as package)
+		  Src = Ver.SourcePkgName();
+		  VerTag = Ver.SourceVerStr();
+		  break;
+	       }
+	    }
+	    if (Src.empty() == false)
+	       break;
+	 }
+      }
+
+      if (Src.empty() == true && ArchTag.empty() == false)
+      {
+	 if (VerTag.empty() == false)
+	    _error->Error(_("Can not find a package '%s' with version '%s'"),
+		  Pkg.FullName().c_str(), VerTag.c_str());
+	 if (RelTag.empty() == false)
+	    _error->Error(_("Can not find a package '%s' with release '%s'"),
+		  Pkg.FullName().c_str(), RelTag.c_str());
+	 Src = Name;
+	 return 0;
+      }
+
+
+      if (Src.empty() == true)
+      {
+	 // if we don't have found a fitting package yet so we will
+	 // choose a good candidate and proceed with that.
+	 // Maybe we will find a source later on with the right VerTag
+	 // or RelTag
+	 if (Cache.BuildPolicy() == false)
+	    return nullptr;
+	 pkgPolicy * const Policy = Cache.GetPolicy();
+	 pkgCache::VerIterator const Ver = Policy->GetCandidateVer(Pkg);
+	 if (Ver.end() == false)
+	 {
+	    if (strcmp(Ver.SourcePkgName(),Ver.ParentPkg().Name()) != 0)
+	       Src = Ver.SourcePkgName();
+	    if (VerTag.empty() == true && strcmp(Ver.SourceVerStr(),Ver.VerStr()) != 0)
+	       VerTag = Ver.SourceVerStr();
+	 }
+      }
+   }
+
+   if (Src.empty() == true)
+   {
+      Src = TmpSrc;
+   }
+   else 
+   {
+      /* if we have a source pkg name, make sure to only search
+	 for srcpkg names, otherwise apt gets confused if there
+	 is a binary package "pkg1" and a source package "pkg1"
+	 with the same name but that comes from different packages */
+      MatchSrcOnly = true;
+      if (Src != TmpSrc) 
+      {
+	 ioprintf(c1out, _("Picking '%s' as source package instead of '%s'\n"), Src.c_str(), TmpSrc.c_str());
+      }
+   }
+
+   // The best hit
+   pkgSrcRecords::Parser *Last = 0;
+   unsigned long Offset = 0;
+   std::string Version;
+   pkgSourceList const * const SrcList = Cache.GetSourceList();
+
+   /* Iterate over all of the hits, which includes the resulting
+      binary packages in the search */
+	       pkgSrcRecords::Parser *Parse;
+	       while (true)
+	       {
+		  SrcRecs.Restart();
+		  while ((Parse = SrcRecs.Find(Src.c_str(), MatchSrcOnly)) != 0)
+		  {
+		     const std::string Ver = Parse->Version();
+
+		     // See if we need to look for a specific release tag
+		     if (RelTag.empty() == false && UserRequestedVerTag.empty() == true)
+		     {
+			pkgCache::RlsFileIterator const Rls = GetReleaseFileForSourceRecord(Cache, SrcList, Parse);
+			if (Rls.end() == false)
+			{
+			   if ((Rls->Archive != 0 && RelTag != Rls.Archive()) &&
+				 (Rls->Codename != 0 && RelTag != Rls.Codename()))
+			      continue;
+			}
+		     }
+
+		     // Ignore all versions which doesn't fit
+		     if (VerTag.empty() == false &&
+			   Cache.GetPkgCache()->VS->CmpVersion(VerTag, Ver) != 0) // exact match
+			continue;
+
+		     // Newer version or an exact match? Save the hit
+		     if (Last == 0 || Cache.GetPkgCache()->VS->CmpVersion(Version,Ver) < 0) {
+			Last = Parse;
+			Offset = Parse->Offset();
+			Version = Ver;
+		     }
+
+		     // was the version check above an exact match?
+		     // If so, we don't need to look further
+		     if (VerTag.empty() == false && (VerTag == Ver))
+			break;
+		  }
+		  if (UserRequestedVerTag == "" && Version != "" && RelTag != "")
+		     ioprintf(c1out, "Selected version '%s' (%s) for %s\n",
+			   Version.c_str(), RelTag.c_str(), Src.c_str());
+
+		  if (Last != 0 || VerTag.empty() == true)
+		     break;
+		  _error->Error(_("Can not find version '%s' of package '%s'"), VerTag.c_str(), TmpSrc.c_str());
+		  return 0;
+	       }
+
+	       if (Last == 0 || Last->Jump(Offset) == false)
+		  return 0;
+
+	       return Last;
+}
+									/*}}}*/
+// DoSource - Fetch a source archive					/*{{{*/
+// ---------------------------------------------------------------------
+/* Fetch source packages */
+struct DscFile
+{
+   std::string Package;
+   std::string Version;
+   std::string Dsc;
+};
+bool DoSource(CommandLine &CmdL)
+{
+   if (CmdL.FileSize() <= 1)
+      return _error->Error(_("Must specify at least one package to fetch source for"));
+
+   CacheFile Cache;
+   if (Cache.BuildCaches(false) == false)
+      return false;
+
+   // Create the text record parsers
+   pkgSourceList * const List = Cache.GetSourceList();
+   pkgSrcRecords SrcRecs(*List);
+   if (_error->PendingError() == true)
+      return false;
+
+   std::vector<DscFile> Dsc;
+   Dsc.reserve(CmdL.FileSize());
+
+   // insert all downloaded uris into this set to avoid downloading them
+   // twice
+   std::set<std::string> queued;
+
+   // Diff only mode only fetches .diff files
+   bool const diffOnly = _config->FindB("APT::Get::Diff-Only", false);
+   // Tar only mode only fetches .tar files
+   bool const tarOnly = _config->FindB("APT::Get::Tar-Only", false);
+   // Dsc only mode only fetches .dsc files
+   bool const dscOnly = _config->FindB("APT::Get::Dsc-Only", false);
+
+   // Load the requestd sources into the fetcher
+   aptAcquireWithTextStatus Fetcher;
+   std::vector<std::string> UntrustedList;
+   for (const char **cmdl = CmdL.FileList + 1; *cmdl != 0; ++cmdl)
+   {
+      std::string Src;
+      pkgSrcRecords::Parser *Last = FindSrc(*cmdl, SrcRecs, Src, Cache);
+      if (Last == 0) {
+	 return _error->Error(_("Unable to find a source package for %s"),Src.c_str());
+      }
+
+      if (Last->Index().IsTrusted() == false)
+	 UntrustedList.push_back(Src);
+
+      std::string srec = Last->AsStr();
+      std::string::size_type pos = srec.find("\nVcs-");
+      while (pos != std::string::npos)
+      {
+	 pos += strlen("\nVcs-");
+	 std::string vcs = srec.substr(pos,srec.find(":",pos)-pos);
+	 if(vcs == "Browser") 
+	 {
+	    pos = srec.find("\nVcs-", pos);
+	    continue;
+	 }
+	 pos += vcs.length()+2;
+	 std::string::size_type epos = srec.find("\n", pos);
+	 std::string const uri = srec.substr(pos,epos-pos);
+	 ioprintf(c1out, _("NOTICE: '%s' packaging is maintained in "
+		  "the '%s' version control system at:\n"
+		  "%s\n"),
+	       Src.c_str(), vcs.c_str(), uri.c_str());
+	 std::string vcscmd;
+	 if (vcs == "Bzr")
+	    vcscmd = "bzr branch " + uri;
+	 else if (vcs == "Git")
+	    vcscmd = "git clone " + uri;
+
+	 if (vcscmd.empty() == false)
+	    ioprintf(c1out,_("Please use:\n%s\n"
+		     "to retrieve the latest (possibly unreleased) "
+		     "updates to the package.\n"),
+		  vcscmd.c_str());
+	 break;
+      }
+
+      // Back track
+      std::vector<pkgSrcRecords::File> Lst;
+      if (Last->Files(Lst) == false) {
+	 return false;
+      }
+
+      DscFile curDsc;
+      // Load them into the fetcher
+      for (std::vector<pkgSrcRecords::File>::const_iterator I = Lst.begin();
+	    I != Lst.end(); ++I)
+      {
+	 // Try to guess what sort of file it is we are getting.
+	 if (I->Type == "dsc")
+	 {
+	    curDsc.Package = Last->Package();
+	    curDsc.Version = Last->Version();
+	    curDsc.Dsc = flNotDir(I->Path);
+	 }
+
+	 // Handle the only options so that multiple can be used at once
+	 if (diffOnly == true || tarOnly == true || dscOnly == true)
+	 {
+	    if ((diffOnly == true && I->Type == "diff") ||
+		  (tarOnly == true && I->Type == "tar") ||
+		  (dscOnly == true && I->Type == "dsc"))
+	       ; // Fine, we want this file downloaded
+	    else
+	       continue;
+	 }
+
+	 // don't download the same uri twice (should this be moved to
+	 // the fetcher interface itself?)
+	 if(queued.find(Last->Index().ArchiveURI(I->Path)) != queued.end())
+	    continue;
+	 queued.insert(Last->Index().ArchiveURI(I->Path));
+
+	 // check if we have a file with that md5 sum already localy
+	 std::string localFile = flNotDir(I->Path);
+	 if (FileExists(localFile) == true)
+	    if(I->Hashes.VerifyFile(localFile) == true)
+	    {
+	       ioprintf(c1out,_("Skipping already downloaded file '%s'\n"),
+		     localFile.c_str());
+	       continue;
+	    }
+
+	 // see if we have a hash (Acquire::ForceHash is the only way to have none)
+	 if (I->Hashes.usable() == false && _config->FindB("APT::Get::AllowUnauthenticated",false) == false)
+	 {
+	    ioprintf(c1out, "Skipping download of file '%s' as requested hashsum is not available for authentication\n",
+		  localFile.c_str());
+	    curDsc.Dsc.clear();
+	    continue;
+	 }
+
+	 new pkgAcqFile(&Fetcher,Last->Index().ArchiveURI(I->Path),
+	       I->Hashes, I->FileSize, Last->Index().SourceInfo(*Last,*I), Src);
+      }
+      Dsc.push_back(std::move(curDsc));
+   }
+
+   // Display statistics
+   unsigned long long FetchBytes = Fetcher.FetchNeeded();
+   unsigned long long FetchPBytes = Fetcher.PartialPresent();
+   unsigned long long DebBytes = Fetcher.TotalNeeded();
+
+   if (CheckFreeSpaceBeforeDownload(".", (FetchBytes - FetchPBytes)) == false)
+      return false;
+
+   // Number of bytes
+   if (DebBytes != FetchBytes)
+      //TRANSLATOR: The required space between number and unit is already included
+      // in the replacement strings, so %sB will be correctly translate in e.g. 1,5 MB
+      ioprintf(c1out,_("Need to get %sB/%sB of source archives.\n"),
+	    SizeToStr(FetchBytes).c_str(),SizeToStr(DebBytes).c_str());
+   else
+      //TRANSLATOR: The required space between number and unit is already included
+      // in the replacement string, so %sB will be correctly translate in e.g. 1,5 MB
+      ioprintf(c1out,_("Need to get %sB of source archives.\n"),
+	    SizeToStr(DebBytes).c_str());
+
+   if (_config->FindB("APT::Get::Simulate",false) == true)
+   {
+      for (auto const &D: Dsc)
+	 ioprintf(std::cout, _("Fetch source %s\n"), D.Package.c_str());
+      return true;
+   }
+
+   // Just print out the uris an exit if the --print-uris flag was used
+   if (_config->FindB("APT::Get::Print-URIs") == true)
+   {
+      pkgAcquire::UriIterator I = Fetcher.UriBegin();
+      for (; I != Fetcher.UriEnd(); ++I)
+	 std::cout << '\'' << I->URI << "' " << flNotDir(I->Owner->DestFile) << ' ' <<
+	    std::to_string(I->Owner->FileSize) << ' ' << I->Owner->HashSum() << std::endl;
+      return true;
+   }
+
+   // check authentication status of the source as well
+   if (UntrustedList.empty() == false && AuthPrompt(UntrustedList, false) == false)
+      return false;
+
+   // Run it
+   bool Failed = false;
+   if (AcquireRun(Fetcher, 0, &Failed, NULL) == false || Failed == true)
+      return _error->Error(_("Failed to fetch some archives."));
+
+   if (diffOnly || tarOnly || dscOnly || _config->FindB("APT::Get::Download-only",false) == true)
+   {
+      c1out << _("Download complete and in download only mode") << std::endl;
+      return true;
+   }
+
+   bool const fixBroken = _config->FindB("APT::Get::Fix-Broken", false);
+   bool SaidCheckIfDpkgDev = false;
+   for (auto const &D: Dsc)
+   {
+      if (unlikely(D.Dsc.empty() == true))
+	 continue;
+      std::string const Dir = D.Package + '-' + Cache.GetPkgCache()->VS->UpstreamVersion(D.Version.c_str());
+
+      // See if the package is already unpacked
+      struct stat Stat;
+      if (fixBroken == false && stat(Dir.c_str(),&Stat) == 0 &&
+	    S_ISDIR(Stat.st_mode) != 0)
+      {
+	 ioprintf(c0out ,_("Skipping unpack of already unpacked source in %s\n"),
+	       Dir.c_str());
+      }
+      else
+      {
+	 // Call dpkg-source
+	 std::string const sourceopts = _config->Find("DPkg::Source-Options", "--no-check -x");
+	 std::string S;
+	 strprintf(S, "%s %s %s",
+	       _config->Find("Dir::Bin::dpkg-source","dpkg-source").c_str(),
+	       sourceopts.c_str(), D.Dsc.c_str());
+	 if (system(S.c_str()) != 0)
+	 {
+	    _error->Error(_("Unpack command '%s' failed.\n"), S.c_str());
+	    if (SaidCheckIfDpkgDev == false)
+	    {
+	       _error->Notice(_("Check if the 'dpkg-dev' package is installed.\n"));
+	       SaidCheckIfDpkgDev = true;
+	    }
+	    continue;
+	 }
+      }
+
+      // Try to compile it with dpkg-buildpackage
+      if (_config->FindB("APT::Get::Compile",false) == true)
+      {
+	 std::string buildopts = _config->Find("APT::Get::Host-Architecture");
+	 if (buildopts.empty() == false)
+	    buildopts = "-a" + buildopts + " ";
+
+	 // get all active build profiles
+	 std::string const profiles = APT::Configuration::getBuildProfilesString();
+	 if (profiles.empty() == false)
+	    buildopts.append(" -P").append(profiles).append(" ");
+
+	 buildopts.append(_config->Find("DPkg::Build-Options","-b -uc"));
+
+	 // Call dpkg-buildpackage
+	 std::string S;
+	 strprintf(S, "cd %s && %s %s",
+	       Dir.c_str(),
+	       _config->Find("Dir::Bin::dpkg-buildpackage","dpkg-buildpackage").c_str(),
+	       buildopts.c_str());
+
+	 if (system(S.c_str()) != 0)
+	 {
+	    _error->Error(_("Build command '%s' failed.\n"), S.c_str());
+	    continue;
+	 }
+      }
+   }
+   return true;
+}
+									/*}}}*/
+// DoBuildDep - Install/removes packages to satisfy build dependencies  /*{{{*/
+// ---------------------------------------------------------------------
+/* This function will look at the build depends list of the given source 
+   package and install the necessary packages to make it true, or fail. */
+static std::vector<pkgSrcRecords::Parser::BuildDepRec> GetBuildDeps(pkgSrcRecords::Parser * const Last,
+      char const * const Src, bool const StripMultiArch, std::string const &hostArch)
+{
+   std::vector<pkgSrcRecords::Parser::BuildDepRec> BuildDeps;
+   // FIXME: Can't specify architecture to use for [wildcard] matching, so switch default arch temporary
+   if (hostArch.empty() == false)
+   {
+      std::string nativeArch = _config->Find("APT::Architecture");
+      _config->Set("APT::Architecture", hostArch);
+      bool Success = Last->BuildDepends(BuildDeps, _config->FindB("APT::Get::Arch-Only", false), StripMultiArch);
+      _config->Set("APT::Architecture", nativeArch);
+      if (Success == false)
+      {
+	 _error->Error(_("Unable to get build-dependency information for %s"), Src);
+	 return {};
+      }
+   }
+   else if (Last->BuildDepends(BuildDeps, _config->FindB("APT::Get::Arch-Only", false), StripMultiArch) == false)
+   {
+      _error->Error(_("Unable to get build-dependency information for %s"), Src);
+      return {};
+   }
+
+   if (BuildDeps.empty() == true)
+      ioprintf(c1out,_("%s has no build depends.\n"), Src);
+
+   return BuildDeps;
+}
+static void WriteBuildDependencyPackage(std::ostringstream &buildDepsPkgFile,
+      std::string const &PkgName, std::string const &Arch,
+      std::vector<pkgSrcRecords::Parser::BuildDepRec> const &Dependencies)
+{
+   buildDepsPkgFile << "Package: " << PkgName << "\n"
+      << "Architecture: " << Arch << "\n"
+      << "Version: 1\n";
+
+   bool const IndepOnly = _config->FindB("APT::Get::Indep-Only", false);
+   std::string depends, conflicts;
+   for (auto const &dep: Dependencies)
+   {
+      // ArchOnly is handled while parsing the dependencies on input
+      if (IndepOnly && (dep.Type == pkgSrcRecords::Parser::BuildDependArch ||
+	       dep.Type == pkgSrcRecords::Parser::BuildConflictArch))
+	 continue;
+      std::string * type;
+      if (dep.Type == pkgSrcRecords::Parser::BuildConflict ||
+		  dep.Type == pkgSrcRecords::Parser::BuildConflictIndep ||
+		  dep.Type == pkgSrcRecords::Parser::BuildConflictArch)
+	 type = &conflicts;
+      else
+	 type = &depends;
+
+      type->append(" ").append(dep.Package);
+      if (dep.Version.empty() ==  false)
+	 type->append(" (").append(pkgCache::CompTypeDeb(dep.Op)).append(" ").append(dep.Version).append(")");
+      if ((dep.Op & pkgCache::Dep::Or) == pkgCache::Dep::Or)
+      {
+	 type->append("\n  |");
+      }
+      else
+	 type->append(",\n");
+   }
+   if (depends.empty() == false)
+      buildDepsPkgFile << "Depends:\n" << depends;
+   if (conflicts.empty() == false)
+      buildDepsPkgFile << "Conflicts:\n" << conflicts;
+   buildDepsPkgFile << "\n";
+}
+bool DoBuildDep(CommandLine &CmdL)
+{
+   bool StripMultiArch;
+   std::string hostArch = _config->Find("APT::Get::Host-Architecture");
+   if (hostArch.empty() == false)
+   {
+      std::vector<std::string> archs = APT::Configuration::getArchitectures();
+      if (std::find(archs.begin(), archs.end(), hostArch) == archs.end())
+	 return _error->Error(_("No architecture information available for %s. See apt.conf(5) APT::Architectures for setup"), hostArch.c_str());
+      StripMultiArch = false;
+   }
+   else
+      StripMultiArch = true;
+   auto const nativeArch = _config->Find("APT::Architecture");
+   std::string const pseudoArch = hostArch.empty() ? nativeArch : hostArch;
+
+   CacheFile Cache;
+   auto VolatileCmdL = GetPseudoPackages(Cache.GetSourceList(), CmdL, AddVolatileSourceFile, pseudoArch);
+   auto AreDoingSatisfy = strcasecmp(CmdL.FileList[0], "satisfy") == 0;
+
+   if (not AreDoingSatisfy)
+      _config->Set("APT::Install-Recommends", false);
+
+   if (CmdL.FileSize() <= 1 && VolatileCmdL.empty())
+      return _error->Error(_("Must specify at least one package to check builddeps for"));
+
+   std::ostringstream buildDepsPkgFile;
+   std::vector<PseudoPkg> pseudoPkgs;
+   // deal with the build essentials first
+   if (not AreDoingSatisfy)
+   {
+      std::vector<pkgSrcRecords::Parser::BuildDepRec> BuildDeps;
+      for (auto && opt: _config->FindVector("APT::Build-Essential"))
+      {
+	 if (opt.empty())
+	    continue;
+	 pkgSrcRecords::Parser::BuildDepRec rec;
+	 rec.Package = std::move(opt);
+	 rec.Type = pkgSrcRecords::Parser::BuildDependIndep;
+	 rec.Op = 0;
+	 BuildDeps.push_back(rec);
+      }
+      std::string const pseudo = "builddeps:essentials";
+      WriteBuildDependencyPackage(buildDepsPkgFile, pseudo, nativeArch, BuildDeps);
+      pseudoPkgs.emplace_back(pseudo, nativeArch, "");
+   }
+
+   if (AreDoingSatisfy)
+   {
+      std::vector<pkgSrcRecords::Parser::BuildDepRec> BuildDeps;
+      for (unsigned i = 1; i < CmdL.FileSize(); i++)
+      {
+	 const char *Start = CmdL.FileList[i];
+	 const char *Stop = Start + strlen(Start);
+	 auto Type = pkgSrcRecords::Parser::BuildDependIndep;
+
+	 // Reject '>' and '<' as operators, as they have strange meanings.
+	 bool insideVersionRestriction = false;
+	 for (auto C = Start; C + 1 < Stop; C++)
+	 {
+	    if (*C == '(')
+	       insideVersionRestriction = true;
+	    else if (*C == ')')
+	       insideVersionRestriction = false;
+	    else if (insideVersionRestriction && (*C == '<' || *C == '>'))
+	    {
+	       if (C[1] != *C && C[1] != '=')
+		  return _error->Error(_("Invalid operator '%c' at offset %d, did you mean '%c%c' or '%c='? - in: %s"), *C, (int)(C - Start), *C, *C, *C, Start);
+	       C++;
+	    }
+	 }
+
+	 if (APT::String::Startswith(Start, "Conflicts:"))
+	 {
+	    Type = pkgSrcRecords::Parser::BuildConflictIndep;
+	    Start += strlen("Conflicts:");
+	 }
+	 while (1)
+	 {
+	    pkgSrcRecords::Parser::BuildDepRec rec;
+	    Start = debListParser::ParseDepends(Start, Stop,
+						rec.Package, rec.Version, rec.Op, true, false, true, pseudoArch);
+
+	    if (Start == 0)
+	       return _error->Error("Problem parsing dependency: %s", CmdL.FileList[i]);
+	    rec.Type = Type;
+
+	    // We parsed a package that was ignored (wrong architecture restriction
+	    // or something).
+	    if (rec.Package.empty())
+	    {
+	       // If we are in an OR group, we need to set the "Or" flag of the
+	       // previous entry to our value.
+	       if (BuildDeps.empty() == false && (BuildDeps[BuildDeps.size() - 1].Op & pkgCache::Dep::Or) == pkgCache::Dep::Or)
+	       {
+		  BuildDeps[BuildDeps.size() - 1].Op &= ~pkgCache::Dep::Or;
+		  BuildDeps[BuildDeps.size() - 1].Op |= (rec.Op & pkgCache::Dep::Or);
+	       }
+	    }
+	    else
+	    {
+	       BuildDeps.emplace_back(std::move(rec));
+	    }
+
+	    if (Start == Stop)
+	       break;
+	 }
+      }
+      std::string const pseudo = "command line argument";
+      WriteBuildDependencyPackage(buildDepsPkgFile, pseudo, pseudoArch, BuildDeps);
+      pseudoPkgs.emplace_back(pseudo, pseudoArch, "");
+   }
+
+   // Read the source list
+   if (Cache.BuildSourceList() == false)
+      return false;
+   pkgSourceList *List = Cache.GetSourceList();
+
+   if (not AreDoingSatisfy)
+   {
+      auto const VolatileSources = List->GetVolatileFiles();
+      for (auto &&pkg : VolatileCmdL)
+      {
+	 if (unlikely(pkg.index == -1))
+	 {
+	    _error->Error(_("Unable to find a source package for %s"), pkg.name.c_str());
+	    continue;
+	 }
+	 if (DirectoryExists(pkg.name))
+	    ioprintf(c1out, _("Note, using directory '%s' to get the build dependencies\n"), pkg.name.c_str());
+	 else
+	    ioprintf(c1out, _("Note, using file '%s' to get the build dependencies\n"), pkg.name.c_str());
+	 std::unique_ptr<pkgSrcRecords::Parser> Last(VolatileSources[pkg.index]->CreateSrcParser());
+	 if (Last == nullptr)
+	 {
+	    _error->Error(_("Unable to find a source package for %s"), pkg.name.c_str());
+	    continue;
+	 }
+
+	 auto pseudo = std::string("builddeps:") + pkg.name;
+	 WriteBuildDependencyPackage(buildDepsPkgFile, pseudo, pseudoArch,
+				     GetBuildDeps(Last.get(), pkg.name.c_str(), StripMultiArch, hostArch));
+	 pkg.name = std::move(pseudo);
+	 pseudoPkgs.push_back(std::move(pkg));
+      }
+      VolatileCmdL.clear();
+   }
+
+   bool const WantLock = _config->FindB("APT::Get::Print-URIs", false) == false;
+   if (CmdL.FileList[1] != 0 && not AreDoingSatisfy)
+   {
+      if (Cache.BuildCaches(WantLock) == false)
+	 return false;
+      // Create the text record parsers
+      pkgSrcRecords SrcRecs(*List);
+      if (_error->PendingError() == true)
+	 return false;
+      for (const char **I = CmdL.FileList + 1; *I != 0; ++I)
+      {
+	 std::string Src;
+	 pkgSrcRecords::Parser * const Last = FindSrc(*I,SrcRecs,Src,Cache);
+	 if (Last == nullptr)
+	    return _error->Error(_("Unable to find a source package for %s"), *I);
+
+	 std::string const pseudo = std::string("builddeps:") + Src;
+	 WriteBuildDependencyPackage(buildDepsPkgFile, pseudo, pseudoArch,
+	       GetBuildDeps(Last, Src.c_str(), StripMultiArch, hostArch));
+	 std::string reltag = *I;
+	 size_t found = reltag.find_last_of("/");
+	 if (found == std::string::npos)
+	    reltag.clear();
+	 else
+	    reltag.erase(0, found + 1);
+	 pseudoPkgs.emplace_back(pseudo, pseudoArch, std::move(reltag));
+      }
+   }
+
+   Cache.AddIndexFile(new debStringPackageIndex(buildDepsPkgFile.str()));
+
+   if (Cache.Open(WantLock) == false)
+      return false;
+   pkgProblemResolver Fix(Cache.GetDepCache());
+
+   APT::PackageVector removeAgain;
+   {
+      pkgDepCache::ActionGroup group(Cache);
+      TryToInstall InstallAction(Cache, &Fix, false);
+      std::list<std::pair<pkgCache::VerIterator, std::string>> candSwitch;
+      for (auto const &pkg: pseudoPkgs)
+      {
+	 pkgCache::PkgIterator const Pkg = Cache->FindPkg(pkg.name, pkg.arch);
+	 if (Pkg.end())
+	    continue;
+	 if (pkg.release.empty())
+	    Cache->SetCandidateVersion(Pkg.VersionList());
+	 else
+	    candSwitch.emplace_back(Pkg.VersionList(), pkg.release);
+      }
+      if (candSwitch.empty() == false)
+	 InstallAction.propergateReleaseCandiateSwitching(candSwitch, c0out);
+      for (auto const &pkg: pseudoPkgs)
+      {
+	 pkgCache::PkgIterator const Pkg = Cache->FindPkg(pkg.name, pkg.arch);
+	 if (Pkg.end())
+	    continue;
+	 InstallAction(Cache[Pkg].CandidateVerIter(Cache));
+	 removeAgain.push_back(Pkg);
+      }
+      InstallAction.doAutoInstall();
+
+      OpTextProgress Progress(*_config);
+      bool const resolver_fail = Fix.Resolve(true, &Progress);
+      if (resolver_fail == false && Cache->BrokenCount() == 0)
+	 return false;
+      if (CheckNothingBroken(Cache) == false)
+	 return false;
+   }
+   if (DoAutomaticRemove(Cache) == false)
+      return false;
+
+   {
+      pkgDepCache::ActionGroup group(Cache);
+      if (_config->FindB(AreDoingSatisfy ? "APT::Get::Satisfy-Automatic" : "APT::Get::Build-Dep-Automatic", false) == false)
+      {
+	 for (auto const &pkg: removeAgain)
+	 {
+	    auto const instVer = Cache[pkg].InstVerIter(Cache);
+	    if (unlikely(instVer.end() == true))
+	       continue;
+	    for (auto D = instVer.DependsList(); D.end() != true; ++D)
+	    {
+	       if (D->Type != pkgCache::Dep::Depends || D.IsMultiArchImplicit())
+		  continue;
+	       APT::VersionList verlist = APT::VersionList::FromDependency(Cache, D, APT::CacheSetHelper::CANDIDATE);
+	       for (auto const &V : verlist)
+	       {
+		  auto const P = V.ParentPkg();
+		  if (Cache[P].InstallVer != V)
+		     continue;
+		  Cache->MarkAuto(P, false);
+	       }
+	    }
+	 }
+      }
+      for (auto const &pkg: removeAgain)
+	 Cache->MarkDelete(pkg, false, 0, true);
+   }
+
+   pseudoPkgs.clear();
+   if (_error->PendingError() || InstallPackages(Cache, false, true) == false)
+      return _error->Error(_("Failed to process build dependencies"));
+   return true;
+}
+									/*}}}*/