def handle_read(self):
# 802.11 maximum frame size is 2346 bytes (cf. RFC3580)
# However, WiFi interfaces are always MTUed to 1500
dot11_rcvd_frame = self.fd.recv(2346)
# WEP handling is automagicly done by Scapy if conf.wepkey is set
# Nothing to do to decrypt (although not yet tested)
# WEP frames have Dot11WEP layer, others don't
#if DEBUG:
# if dot11_rcvd_frame.haslayer(Dot11WEP): # WEP frame
# os.write(1,"Received WEP from %s\n" % self._intf)
# else: # Cleartext frame
# os.write(1,"Received from %s\n" % self._intf)
# if VERB:
# os.write(1,"%s\n" % dot11_rcvd_frame.summary())
# if dot11_frame.getlayer(Dot11).FCfield & 1: # Frame is to-DS
# For now, we only take care of to-DS frames...
if dot11_rcvd_frame.getlayer(Dot11).addr1 != self._tap.bssid:
return
# One day, we'll try to take care of AP to DS trafic (cf. TODO)
# else: # Frame is from-DS
# if dot11_frame.getlayer(Dot11).addr2 != BSSID:
# continue
# eth_frame = Ether(dst=dot11_frame.getlayer(Dot11).addr1,
# src=dot11_frame.getlayer(Dot11).addr3)
if dot11_rcvd_frame.haslayer(SNAP):
eth_sent_frame = Ether(
dst=dot11_rcvd_frame.getlayer(Dot11).addr3,
src=dot11_rcvd_frame.getlayer(Dot11).addr2,
type=dot11_rcvd_frame.getlayer(SNAP).code)
eth_sent_frame.payload = dot11_rcvd_frame.getlayer(SNAP).payload
#if DEBUG:
# os.write(1, "Sending to %s\n" % ifname)
# if VERB:
# os.write(1, "%s\n" % eth_sent_frame.summary())
# Add Tun/Tap header to frame, convert to string and send
buf = "\x00\x00" + struct.pack("!H",eth_sent_frame.type) + str(eth_sent_frame)
os.write(self.fd, buf)
def handle_read(self):
# 802.11 maximum frame size is 2346 bytes (cf. RFC3580)
# However, WiFi interfaces are always MTUed to 1500
dot11_rcvd_frame = self.fd.recv(2346)
# WEP handling is automagicly done by Scapy if conf.wepkey is set
# Nothing to do to decrypt (although not yet tested)
# WEP frames have Dot11WEP layer, others don't
#if DEBUG:
# if dot11_rcvd_frame.haslayer(Dot11WEP): # WEP frame
# os.write(1,"Received WEP from %s\n" % self._intf)
# else: # Cleartext frame
# os.write(1,"Received from %s\n" % self._intf)
# if VERB:
# os.write(1,"%s\n" % dot11_rcvd_frame.summary())
# if dot11_frame.getlayer(Dot11).FCfield & 1: # Frame is to-DS
# For now, we only take care of to-DS frames...
if dot11_rcvd_frame.getlayer(Dot11).addr1 != self._tap.bssid:
return
# One day, we'll try to take care of AP to DS trafic (cf. TODO)
# else: # Frame is from-DS
# if dot11_frame.getlayer(Dot11).addr2 != BSSID:
# continue
# eth_frame = Ether(dst=dot11_frame.getlayer(Dot11).addr1,
# src=dot11_frame.getlayer(Dot11).addr3)
if dot11_rcvd_frame.haslayer(SNAP):
eth_sent_frame = Ether(dst=dot11_rcvd_frame.getlayer(Dot11).addr3,
src=dot11_rcvd_frame.getlayer(Dot11).addr2,
type=dot11_rcvd_frame.getlayer(SNAP).code)
eth_sent_frame.payload = dot11_rcvd_frame.getlayer(SNAP).payload
#if DEBUG:
# os.write(1, "Sending to %s\n" % ifname)
# if VERB:
# os.write(1, "%s\n" % eth_sent_frame.summary())
# Add Tun/Tap header to frame, convert to string and send
buf = "\x00\x00" + struct.pack(
"!H", eth_sent_frame.type) + str(eth_sent_frame)
os.write(self.fd, buf)
os.write(1, "Frame not to/from BSSID\n")
continue
# One day, we'll try to take care of AP to DS trafic (cf. TODO)
# else: # Frame is from-DS
# if dot11_frame.getlayer(Dot11).addr2 != BSSID:
# continue
# eth_frame = Ether(dst=dot11_frame.getlayer(Dot11).addr1,
# src=dot11_frame.getlayer(Dot11).addr3)
if dot11_rcvd_frame.haslayer(SNAP):
eth_sent_frame = Ether(
dst=dot11_rcvd_frame.getlayer(Dot11).addr3,
src=dot11_rcvd_frame.getlayer(Dot11).addr2,
type=dot11_rcvd_frame.getlayer(SNAP).code)
eth_sent_frame.payload = dot11_rcvd_frame.getlayer(
SNAP).payload
if DEBUG:
os.write(1, "Sending to %s\n" % ifname)
if VERB:
os.write(1, "%s\n" % eth_sent_frame.summary())
# Add Tun/Tap header to frame, convert to string and send
buf = "\x00\x00" + struct.pack(
"!H", eth_sent_frame.type) + str(eth_sent_frame)
os.write(f, buf)
# Program killed
except KeyboardInterrupt:
print "Stopped by user."
os.write(1,"Frame not to/from BSSID\n")
continue
# One day, we'll try to take care of AP to DS trafic (cf. TODO)
# else: # Frame is from-DS
# if dot11_frame.getlayer(Dot11).addr2 != BSSID:
# continue
# eth_frame = Ether(dst=dot11_frame.getlayer(Dot11).addr1,
# src=dot11_frame.getlayer(Dot11).addr3)
if dot11_rcvd_frame.haslayer(SNAP):
eth_sent_frame = Ether(
dst=dot11_rcvd_frame.getlayer(Dot11).addr3,
src=dot11_rcvd_frame.getlayer(Dot11).addr2,
type=dot11_rcvd_frame.getlayer(SNAP).code)
eth_sent_frame.payload = dot11_rcvd_frame.getlayer(SNAP).payload
if DEBUG:
os.write(1, "Sending to %s\n" % ifname)
if VERB:
os.write(1, "%s\n" % eth_sent_frame.summary())
# Add Tun/Tap header to frame, convert to string and send
buf = "\x00\x00" + struct.pack("!H",eth_sent_frame.type) + str(eth_sent_frame)
os.write(f, buf)
# Program killed
except KeyboardInterrupt:
print "Stopped by user."
s.close()