Add support for data.tar, control.tar and control.tar.xz

Sync the deb(5) format support with latest dpkg, by allowing
uncompressed tar members and xz compressed control.tar. This
also refactors the control.tar member extraction by using
ExtractTarMember(), which also means future changes only need
to be implemented in a single place.

diff --git a/apt-inst/deb/debfile.cc b/apt-inst/deb/debfile.cc
index 15db1a7fcb6ca54b7c924b2d338811aada8805be..a811bbe88b8b9b017527b3d44d5f402095b58400 100644 (file)
--- a/apt-inst/deb/debfile.cc
+++ b/apt-inst/deb/debfile.cc
@@ -42,12 +42,15 @@ debDebFile::debDebFile(FileFd &File) : File(File), AR(File)
       return;
    }
 
-   if (!CheckMember("control.tar.gz")) {
-      _error->Error(_("This is not a valid DEB archive, missing '%s' member"), "control.tar.gz");
+   if (!CheckMember("control.tar") &&
+       !CheckMember("control.tar.gz") &&
+       !CheckMember("control.tar.xz")) {
+      _error->Error(_("This is not a valid DEB archive, missing '%s' member"), "control.tar");
       return;
    }
 
-   if (!CheckMember("data.tar.gz") &&
+   if (!CheckMember("data.tar") &&
+       !CheckMember("data.tar.gz") &&
        !CheckMember("data.tar.bz2") &&
        !CheckMember("data.tar.lzma") &&
        !CheckMember("data.tar.xz")) {
@@ -108,6 +111,9 @@ bool debDebFile::ExtractTarMember(pkgDirStream &Stream,const char *Name)
       break;
    }
 
+   if (Member == NULL)
+      Member = AR.FindMember(std::string(Name).c_str());
+
    if (Member == NULL)
    {
       std::string ext = std::string(Name) + ".{";
@@ -201,14 +207,7 @@ bool debDebFile::MemControlExtract::Process(Item &Itm,const unsigned char *Data,
    it parses it into a tag section parser. */
 bool debDebFile::MemControlExtract::Read(debDebFile &Deb)
 {
-   // Get the archive member and positition the file 
-   const ARArchive::Member *Member = Deb.GotoMember("control.tar.gz");
-   if (Member == 0)
-      return false;
-
-   // Extract it.
-   ExtractTar Tar(Deb.GetFile(),Member->Size,"gzip");
-   if (Tar.Go(*this) == false)
+   if (Deb.ExtractTarMember(*this, "control.tar") == false)
       return false;
 
    if (Control == 0)

diff --git a/cmdline/apt-extracttemplates.cc b/cmdline/apt-extracttemplates.cc
index 8e1937113ff92ac50c4a6a6d3d8784ef96026b94..2408a7d9d8f333b94dcdc84e005aa0b557b75466 100644 (file)
--- a/cmdline/apt-extracttemplates.cc
+++ b/cmdline/apt-extracttemplates.cc
@@ -24,8 +24,7 @@
 #include <apt-pkg/pkgcachegen.h>
 #include <apt-pkg/version.h>
 #include <apt-pkg/tagfile.h>
-#include <apt-pkg/extracttar.h>
-#include <apt-pkg/arfile.h>
+#include <apt-pkg/debfile.h>
 #include <apt-pkg/deblistparser.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
@@ -91,18 +90,9 @@ string DebFile::GetInstalledVer(const string &package)
 /* */
 bool DebFile::Go()
 {
-       ARArchive AR(File);
-       if (_error->PendingError() == true)
-               return false;
-               
-       const ARArchive::Member *Member = AR.FindMember("control.tar.gz");
-       if (Member == 0)
-               return _error->Error(_("%s not a valid DEB package."),File.Name().c_str());
-       
-       if (File.Seek(Member->Start) == false)
-               return false;
-       ExtractTar Tar(File, Member->Size,"gzip");
-       return Tar.Go(*this);
+       debDebFile Deb(File);
+
+       return Deb.ExtractTarMember(*this, "control.tar");
 }
                                                                        /*}}}*/
 // DebFile::DoItem examine element in package and mark                 /*{{{*/