This commit adds active packet filtering/modification to the framework (replicates etterfilter functionality)

by using netfilterqueue, you can pass a filter using the new -F option, (will be adding an example later)
additionaly removed some deprecated attributes and the --manual-iptables option

core/packetparser.py

@@ -0,0 +1,45 @@
+import threading
+
+from core.utils import set_ip_forwarding, iptables
+from core.logger import logger
+from scapy.all import *
+from traceback import print_exc
+from netfilterqueue import NetfilterQueue
+
+formatter = logging.Formatter("%(asctime)s [PacketParser] %(message)s", datefmt="%Y-%m-%d %H:%M:%S")
+log = logger().setup_logger("PacketParser", formatter)
+
+class PacketParser:
+
+    def __init__(self, filter):
+        self.filter = filter
+
+    def start(self):
+        set_ip_forwarding(1)
+        iptables().NFQUEUE()
+
+        self.nfqueue = NetfilterQueue()
+        self.nfqueue.bind(1, self.modify)
+
+        t = threading.Thread(name='packetparser', target=self.nfqueue.run)
+        t.setDaemon(True)
+        t.start()
+
+    def modify(self, pkt):
+        #log.debug("Got packet")
+        data = pkt.get_payload()
+        packet = IP(data)
+
+        try:
+            execfile(self.filter)
+        except Exception:
+            log.debug("Error occurred in filter")
+            print_exc()
+
+        pkt.set_payload(str(packet)) #set the packet content to our modified version
+        pkt.accept() #accept the packet
+
+    def stop(self):
+        self.nfqueue.unbind()
+        set_ip_forwarding(0)
+        iptables().flush()