示例#1
0
    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)
示例#2
0
    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)
示例#3
0
                    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."
示例#4
0
			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()