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Diffstat (limited to 'scripts/t/Dpkg_Source_Archive.t')
| -rw-r--r-- | scripts/t/Dpkg_Source_Archive.t | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/scripts/t/Dpkg_Source_Archive.t b/scripts/t/Dpkg_Source_Archive.t new file mode 100644 index 0000000..4e77aef --- /dev/null +++ b/scripts/t/Dpkg_Source_Archive.t @@ -0,0 +1,124 @@ +#!/usr/bin/perl +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <https://www.gnu.org/licenses/>. + +use strict; +use warnings; + +use Test::More tests => 4; +use Test::Dpkg qw(:paths); + +use File::Spec; +use File::Path qw(make_path); + +BEGIN { + use_ok('Dpkg::Source::Archive'); +} + +use Dpkg; +use Dpkg::File; + +my $tmpdir = test_get_temp_path(); + +sub test_path_escape +{ + my $name = shift; + + my $treedir = File::Spec->rel2abs("$tmpdir/$name-tree"); + my $overdir = File::Spec->rel2abs("$tmpdir/$name-overlay"); + my $outdir = "$tmpdir/$name-out"; + my $expdir = "$tmpdir/$name-exp"; + + # This is the base directory, where we are going to be extracting stuff + # into, which include traps. + make_path("$treedir/subdir-a"); + file_touch("$treedir/subdir-a/file-a"); + file_touch("$treedir/subdir-a/file-pre-a"); + make_path("$treedir/subdir-b"); + file_touch("$treedir/subdir-b/file-b"); + file_touch("$treedir/subdir-b/file-pre-b"); + symlink File::Spec->abs2rel($outdir, $treedir), "$treedir/symlink-escape"; + symlink File::Spec->abs2rel("$outdir/nonexistent", $treedir), "$treedir/symlink-nonexistent"; + symlink "$treedir/file", "$treedir/symlink-within"; + file_touch("$treedir/supposed-dir"); + + # This is the overlay directory, which we'll pack and extract over the + # base directory. + make_path($overdir); + make_path("$overdir/subdir-a/aa"); + file_dump("$overdir/subdir-a/aa/file-aa", 'aa'); + file_dump("$overdir/subdir-a/file-a", 'a'); + make_path("$overdir/subdir-b/bb"); + file_dump("$overdir/subdir-b/bb/file-bb", 'bb'); + file_dump("$overdir/subdir-b/file-b", 'b'); + make_path("$overdir/symlink-escape"); + file_dump("$overdir/symlink-escape/escaped-file", 'escaped'); + file_dump("$overdir/symlink-nonexistent", 'nonexistent'); + make_path("$overdir/symlink-within"); + make_path("$overdir/supposed-dir"); + file_dump("$overdir/supposed-dir/supposed-file", 'something'); + + # Generate overlay tar. + system($Dpkg::PROGTAR, '-cf', "$overdir.tar", '-C', $overdir, qw( + subdir-a subdir-b + symlink-escape/escaped-file symlink-nonexistent symlink-within + supposed-dir + )) == 0 + or die "cannot create overlay tar archive\n"; + + # This is the expected directory, which we'll be comparing against. + make_path($expdir); + system('cp', '-a', $overdir, $expdir) == 0 + or die "cannot copy overlay hierarchy into expected directory\n"; + + # Store the expected and out reference directories into a tar to compare + # its structure against the result reference. + system($Dpkg::PROGTAR, '-cf', "$expdir.tar", '-C', $overdir, qw( + subdir-a subdir-b + symlink-escape/escaped-file symlink-nonexistent symlink-within + supposed-dir + ), '-C', $treedir, qw( + subdir-a/file-pre-a + subdir-b/file-pre-b + )) == 0 + or die "cannot create expected tar archive\n"; + + # This directory is supposed to remain empty, anything inside implies a + # directory traversal. + make_path($outdir); + + my $warnseen; + local $SIG{__WARN__} = sub { $warnseen = $_[0] }; + + # Perform the extraction. + my $tar = Dpkg::Source::Archive->new(filename => "$overdir.tar"); + $tar->extract($treedir, in_place => 1); + + # Store the result into a tar to compare its structure against a reference. + system($Dpkg::PROGTAR, '-cf', "$treedir.tar", '-C', $treedir, '.'); + + # Check results + ok(length $warnseen && $warnseen =~ m/points outside source root/, + 'expected warning seen'); + ok(system($Dpkg::PROGTAR, '--compare', '-f', "$expdir.tar", '-C', $treedir) == 0, + 'expected directory matches'); + ok(! -e "$outdir/escaped-file", + 'expected output directory is empty, directory traversal'); +} + +test_path_escape('in-place'); + +# TODO: Add actual test cases. + +1; |