Updated internal extractors to return the proper value indicating success/failure.

src/binwalk/config/extract.conf

@@ -44,7 +44,6 @@
 #^ascii cpio archive:cpio:/opt/firmware-mod-kit/uncpio.sh '%e'
 #^bff volume entry:bff:/opt/firmware-mod-kit/src/bff/bffxtractor.py '%e'
 #^wdk file system:wdk:/opt/firmware-mod-kit/src/firmware-tools/unwdk.py '%e'
-#^zlib compressed data:zlib:/opt/firmware-mod-kit/src/firmware-tools/unzlib.py '%e'
 
 # Extract, but don't run anything
 private key:key

src/binwalk/modules/extractor.py

@@ -557,7 +557,7 @@ class Extractor(Module):
         try:
             if callable(cmd):
                 try:
-                    cmd(fname)
+                    retval = cmd(fname)
                 except KeyboardInterrupt as e:
                     raise e
                 except Exception as e:

src/binwalk/plugins/zlibextract.py

@@ -20,7 +20,6 @@ class ZLIBExtractPlugin(binwalk.core.plugin.Plugin):
 
     def extractor(self, fname):
         outfile = os.path.splitext(fname)[0]
-        #print ("Extracting from '%s' to '%s'" % (fname, outfile))
 
         try:
             fpin = binwalk.core.common.BlockFile(fname)
@@ -32,6 +31,6 @@ class ZLIBExtractPlugin(binwalk.core.plugin.Plugin):
             fpin.close()
             fpout.close()
         except Exception, e:
-            pass
-            #print ("Failed to decompress data:", str(e))
+            return False
 
+        return True