3 files changed, 15 insertions, 6 deletions

diff --git a/MAT/archive.py b/MAT/archive.py
index 5b8d9a8..8112f5d 100644
--- a/MAT/archive.py
+++ b/MAT/archive.py
@@ -167,7 +167,7 @@ class TarStripper(GenericArchiveStripper):
         current_file.gname = ''
         return current_file
 
-    def remove_all(self):
+    def remove_all(self, exclude_list=[]):
         tarin = tarfile.open(self.filename, 'r' + self.compression, encoding='utf-8')
         tarout = tarfile.open(self.output, 'w' + self.compression, encoding='utf-8')
         for item in tarin.getmembers():
@@ -208,6 +208,7 @@ class TarStripper(GenericArchiveStripper):
         '''
         if list_unsupported:
             ret_list = []
+        tmp_len = len(self.tempdir) + 1  # trim the tempfile path
         tarin = tarfile.open(self.filename, 'r' + self.compression)
         for item in tarin.getmembers():
             if not self.is_file_clean(item) and not list_unsupported:
@@ -217,14 +218,18 @@ class TarStripper(GenericArchiveStripper):
             if item.isfile():
                 class_file = mat.create_class_file(complete_name, False, add2archive=self.add2archive)
                 if class_file:
-                    if not class_file.is_clean() and not list_unsupported:
-                        return False
+                    if not class_file.is_clean():
+                        # We don't support nested archives
+                        if list_unsupported:
+                                if isinstance(class_file, GenericArchiveStripper):
+                                    ret_list.append(complete_name[tmp_len:])
+                        else:
+                            return False
                 else:
                     logging.error('%s\'s format is not supported or harmless' % item.name)
                     basename, ext = os.path.splitext(complete_name)
                     if ext not in parser.NOMETA:
                         if list_unsupported:
-                            tmp_len = len(self.tempdir) + 1  # trim the tempfile path
                             ret_list.append(complete_name[tmp_len:])
                         else:
                             return False
diff --git a/README.security b/README.security
index 1e6fad0..73f638e 100644
--- a/README.security
+++ b/README.security
@@ -23,6 +23,11 @@ Test suite
 Formats that are not in the test suite are not well-tested,
 please do not trust the MAT about them!
 
+Archives handling
+-----------------
+MAT's GUI does not handle (for now?) nested archives;
+it will treat them like unsupported format.
+
 
 Threat Model
 ============
diff --git a/test/libtest.py b/test/libtest.py
index a9ef383..e0c2f57 100644
--- a/test/libtest.py
+++ b/test/libtest.py
@@ -132,8 +132,7 @@ class TestArchiveProcessing(test.MATTest):
     def test_get_unsupported(self):
         tarpath = os.path.join(self.tmpdir, "test.tar.bz2")
         tar = tarfile.open(tarpath, "w")
-        for clean,dirty in self.file_list[:4]:  # we don't test thoses
-            tar.add(dirty)
+        for clean,_ in self.file_list[:4]:  # we don't test thoses
             tar.add(clean)
         for f in ('../mat.desktop', '../README.security', '../setup.py'):
             tar.add(f, f[3:])  # trim '../'