Updated deps.sh to install a known-working ubi_reader commit version.

deps.sh

@@ -91,7 +91,10 @@ function install_unstuff
 function install_ubireader
 {
     git clone https://github.com/jrspruitt/ubi_reader
-    (cd ubi_reader && $SUDO python setup.py install)
+    # Some UBIFS extraction breaks after this commit, due to "Added fatal error check if UBI block extends beyond file size"
+    # (see this commit: https://github.com/jrspruitt/ubi_reader/commit/af678a5234dc891e8721ec985b1a6e74c77620b6)
+    # Reset to a known working commit.
+    (cd ubi_reader && git reset --hard 0955e6b95f07d849a182125919a1f2b6790d5b51 && $SUDO python setup.py install)
     $SUDO rm -rf ubi_reader
 }
 

src/binwalk/modules/extractor.py

@@ -564,6 +564,7 @@ class Extractor(Module):
         Returns the name of the extracted file (blank string if nothing was extracted).
         '''
         fname = ''
+        rule = None
         recurse = False
         original_dir = os.getcwd()
         rules = self.match(description)
@@ -650,7 +651,10 @@ class Extractor(Module):
 
             os.chdir(original_dir)
 
-        return (output_directory, fname, recurse, str(rule['cmd']))
+        if rule is not None:
+            return (output_directory, fname, recurse, str(rule['cmd']))
+        else:
+            return (output_directory, fname, recurse, '')
 
     def _entry_offset(self, index, entries, description):
         '''