apt_inst.debExtractArchive doesn't handle links.

[spbike]

To reproduce:
>>> import apt_inst
>>> apt_inst.debExtractArchive(open("/tmp/sudo_1.6.8p12-4ubuntu5_amd64.deb"),"/tmp/cdr")
1

What should happen:
ar x /tmp/sudo_1.6.8p12-4ubuntu5_amd64.deb
tar tvzf data.tar.gz | grep "usr/bin/sudo"
hrwsr-xr-x root/root 0 2006-10-09 04:39 ./usr/bin/sudo link to ./usr/bin/sudoedit

What actually happens:
What does happen:
root@mirror:/tmp/cdr/usr/bin# ls -al
total 120
drwxr-xr-x 3 root root 4096 2007-08-06 20:12 .
drwxr-xr-x 6 root root 4096 2007-08-06 20:12 ..
drwxr-xr-x 2 root root 4096 2007-08-06 20:12 sudo

Sudo should be a link, not a directory.

[Julian Andres Klode (juliank)]

The bug is in apt, apt-inst/dirstream.cc:

      case Item::HardLink:
      case Item::SymbolicLink:
      case Item::CharDevice:
      case Item::BlockDevice:
      case Item::Directory:
      {