Merge branch 'feature/extractar-filefd' into debian/experimental

apt-inst/contrib/extracttar.cc

@@ -82,28 +82,9 @@ ExtractTar::~ExtractTar()
    means we hit the end of the tar file but there was still gzip data. */
 bool ExtractTar::Done(bool Force)
 {
-   InFd.Close();
-   if (GZPid <= 0)
-      return true;
-
-   /* If there is a pending error then we are cleaning up gzip and are
-      not interested in it's failures */
-   if (_error->PendingError() == true)
-      Force = true;
-   
-   // Make sure we clean it up!
-   kill(GZPid,SIGINT);
-   string confvar = string("dir::bin::") + DecompressProg;
-   if (ExecWait(GZPid,_config->Find(confvar.c_str(),DecompressProg.c_str()).c_str(),
-		Force) == false)
-   {
-      GZPid = -1;
-      return Force;
-   }
-   
-   GZPid = -1;
-   return true;
+   return InFd.Close();
 }
+
 									/*}}}*/
 // ExtractTar::StartGzip - Startup gzip					/*{{{*/
 // ---------------------------------------------------------------------
@@ -118,43 +99,17 @@ bool ExtractTar::StartGzip()
       return true;
    }
 
-   int Pipes[2];
-   if (pipe(Pipes) != 0)
-      return _error->Errno("pipe",_("Failed to create pipes"));
-
-   // Fork off the process
-   GZPid = ExecFork();
-
-   // Spawn the subprocess
-   if (GZPid == 0)
-   {
-      // Setup the FDs
-      dup2(Pipes[1],STDOUT_FILENO);
-      dup2(File.Fd(),STDIN_FILENO);
-      int Fd = open("/dev/null",O_RDWR);
-      if (Fd == -1)
-	 _exit(101);
-      dup2(Fd,STDERR_FILENO);
-      close(Fd);
-      SetCloseExec(STDOUT_FILENO,false);
-      SetCloseExec(STDIN_FILENO,false);
-      SetCloseExec(STDERR_FILENO,false);
-
-      const char *Args[3];
-      string confvar = string("dir::bin::") + DecompressProg;
-      string argv0 = _config->Find(confvar.c_str(),DecompressProg.c_str());
-      Args[0] = argv0.c_str();
-      Args[1] = "-d";
-      Args[2] = 0;
-      execvp(Args[0],(char **)Args);
-      cerr << _("Failed to exec gzip ") << Args[0] << endl;
-      _exit(100);
+   std::vector<APT::Configuration::Compressor> const compressors = APT::Configuration::getCompressors();
+   std::vector<APT::Configuration::Compressor>::const_iterator compressor = compressors.begin();
+   for (; compressor != compressors.end(); compressor++) {
+      if (compressor->Name == DecompressProg) {
+	 return InFd.OpenDescriptor(File.Fd(), FileFd::ReadOnly, *compressor, false);
+      }
    }
 
-   // Fix up our FDs
-   InFd.OpenDescriptor(Pipes[0], FileFd::ReadOnly, FileFd::None, true);
-   close(Pipes[1]);
-   return true;
+   return _error->Error(_("Cannot find a configured compressor for '%s'"),
+			DecompressProg.c_str());
+
 }
 									/*}}}*/
 // ExtractTar::Go - Perform extraction					/*{{{*/

apt-pkg/contrib/fileutl.cc

@@ -2006,12 +2006,13 @@ bool FileFd::Close()
    {
       if ((Flags & Compressed) != Compressed && iFd > 0 && close(iFd) != 0)
 	 Res &= _error->Errno("close",_("Problem closing the file %s"), FileName.c_str());
-      if (d != NULL)
-      {
-	 Res &= d->CloseDown(FileName);
-	 delete d;
-	 d = NULL;
-      }
+   }
+
+   if (d != NULL)
+   {
+      Res &= d->CloseDown(FileName);
+      delete d;
+      d = NULL;
    }
 
    if ((Flags & Replace) == Replace) {

test/libapt/extracttar_test.cc

@@ -0,0 +1,41 @@
+#include <apt-pkg/error.h>
+#include <apt-pkg/extracttar.h>
+#include <iostream>
+#include <stdlib.h>
+
+#include <gtest/gtest.h>
+#include "assert.h"
+
+class Stream : public pkgDirStream
+{
+   public:
+    int count;
+    Stream () { count = 0; }
+    virtual bool DoItem(Item &Itm,int &Fd) { (void)Itm; (void)Fd; count++; return true; }
+    virtual bool Fail(Item &Itm,int Fd) { (void)Itm; (void)Fd; return true; }
+    virtual bool FinishedFile(Item &Itm,int Fd) { (void)Itm; (void)Fd; return true; }
+    virtual bool Process(Item &Itm,const unsigned char * Data, unsigned long Size,unsigned long Pos) { (void)Itm; (void) Data; (void) Size; (void) Pos; return true; }
+    virtual ~Stream() {}
+};
+
+TEST(ExtractTar, ExtractTar)
+{
+    EXPECT_EQ(system("tar c makefile | gzip > tar.tgz"), 0);
+
+    FileFd fd("tar.tgz", FileFd::ReadOnly);
+    unlink("tar.tgz");
+    ExtractTar tar(fd, -1, "gzip");
+
+    // Run multiple times, because we want to check not only that extraction
+    // works, but also that it works multiple times (important for python-apt)
+    for (int i = 0; i < 5; i++) {
+        Stream stream;
+        fd.Seek(0);
+        tar.Go(stream);
+        if (_error->PendingError()) {
+            _error->DumpErrors();
+            EXPECT_FALSE(true);
+        }
+        EXPECT_EQ(stream.count, 1);
+    }
+}

test/libapt/makefile

@@ -15,8 +15,8 @@ test: $(BIN)/gtest$(BASENAME)
 $(BIN)/gtest$(BASENAME): $(LIB)/gtest.a
 
 PROGRAM = gtest${BASENAME}
-SLIBS = -lapt-pkg -lapt-private -pthread $(LIB)/gtest.a
-LIB_MAKES = apt-pkg/makefile apt-private/makefile
+SLIBS = -lapt-pkg -lapt-private -lapt-inst -pthread $(LIB)/gtest.a
+LIB_MAKES = apt-pkg/makefile apt-private/makefile apt-inst/makefile
 SOURCE = gtest_runner.cc $(wildcard *-helpers.cc *_test.cc)
 include $(PROGRAM_H)