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main.py
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main.py
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from ryu.base import app_manager
from ryu.controller import ofp_event
from ryu.controller.handler import CONFIG_DISPATCHER, MAIN_DISPATCHER, DEAD_DISPATCHER
from ryu.controller.handler import set_ev_cls
from ryu.ofproto import ofproto_v1_3
from ryu.lib.packet import packet
from ryu.lib.packet import ethernet
from ryu.ofproto import ether
from ryu.ofproto import inet
from ryu.lib.packet import ether_types
from ryu.lib.packet import ipv4
from ryu.lib.packet import ipv6
from ryu.lib import hub
from database import database
class final(app_manager.RyuApp):
OFP_VERSIONS = [ofproto_v1_3.OFP_VERSION]
def __init__(self, *args, **kwargs):
super(final, self).__init__(*args, **kwargs)
self.mac_to_port = {}
self.port_to_mac = {}
self.datapaths = {}
self.update_thread = hub.spawn(self._update)
@set_ev_cls(ofp_event.EventOFPStateChange,[MAIN_DISPATCHER, DEAD_DISPATCHER])
def _state_change_handler(self, ev):
datapath = ev.datapath
if ev.state == MAIN_DISPATCHER:
if not datapath.id in self.datapaths:
self.logger.info('register datapath: %016x', datapath.id)
self.datapaths[datapath.id] = datapath
elif ev.state == DEAD_DISPATCHER:
if datapath.id in self.datapaths:
self.logger.info('unregister datapath: %016x', datapath.id)
del self.datapaths[datapath.id]
@set_ev_cls(ofp_event.EventOFPSwitchFeatures, CONFIG_DISPATCHER)
def switch_features_handler(self, ev):
datapath = ev.msg.datapath
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
match = parser.OFPMatch()
actions = [parser.OFPActionOutput(ofproto.OFPP_CONTROLLER,ofproto.OFPCML_NO_BUFFER)]
self.add_flow(datapath, 0, match, actions)
def add_flow(self, datapath, priority, match, actions, buffer_id=None):
self.logger.info("************ add_flow *************")
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS,actions)]
if buffer_id:
mod = parser.OFPFlowMod(datapath=datapath, buffer_id=buffer_id, priority=priority, match=match, instructions=inst)
else:
mod = parser.OFPFlowMod(datapath=datapath, priority=priority, match=match, instructions=inst)
self.logger.info("send to "+str(datapath)+" ("+str(datapath.id)+")"+" msg : "+str(mod))
datapath.send_msg(mod)
# Sub program to handle packet_in
def L2Learning(self, msg, datapath, ofproto, parser, in_port, src, dst):
dpid = datapath.id
self.mac_to_port.setdefault(dpid, {})
self.port_to_mac.setdefault(dpid, {})
self.mac_to_port[dpid][src] = in_port
self.port_to_mac[dpid][in_port] = src
out_port = ofproto.OFPP_FLOOD
if dst in self.mac_to_port[dpid]:
out_port = self.mac_to_port[dpid][dst]
match = parser.OFPMatch(in_port=in_port, eth_dst=dst)
actions = [parser.OFPActionOutput(out_port)]
# auto create rela
reverse_match = parser.OFPMatch(in_port=out_port, eth_dst=src)
reverse_actions = [parser.OFPActionOutput(in_port)]
if out_port != ofproto.OFPP_FLOOD:
if msg.buffer_id != ofproto.OFP_NO_BUFFER:
self.add_flow(datapath, 1, match, actions, msg.buffer_id)
self.add_flow(datapath, 1, reverse_match, reverse_actions, msg.buffer_id)
return
else:
self.add_flow(datapath, 1, match, actions)
self.add_flow(datapath, 1, reverse_match, reverse_actions)
data = None
if msg.buffer_id == ofproto.OFP_NO_BUFFER:
data = msg.data
out = parser.OFPPacketOut(datapath=datapath, buffer_id=msg.buffer_id,in_port=in_port, actions=actions, data=data)
datapath.send_msg(out)
# main loop of update thread
def _update(self):
while True:
for dp in self.datapaths.values():
parser = dp.ofproto_parser
ofproto = dp.ofproto
self.logger.info("dpid="+str(dp.id));
if dp.id == 161 :
self.logger.info("Check SQL Database")
db = database()
list = db.db_getList()
for data in list:
print data["id"],"(",type(data["id"]),")"," ",data["address"],"(",type(data["address"]),")"," ",data["access"],"(",type(data["access"]),")"
if data["access"] == 1:
self.logger.info("DENY "+str(data["address"]))
match = parser.OFPMatch(eth_type=0x0800, ipv4_src=str(data["address"]))
actions = {}
self.add_flow(dp, data["id"]+10, match, actions)
if data["access"] == 0:
self.logger.info("ALLOW "+str(data["address"]))
match = parser.OFPMatch(eth_type=0x0800, ipv4_src=str(data["address"]))
mod = parser.OFPFlowMod(dp, command=ofproto.OFPFC_DELETE, out_port=ofproto.OFPP_ANY, out_group=ofproto.OFPG_ANY, match=match)
dp.send_msg(mod)
hub.sleep(10)
def ipv4_handler(self, msg, datapath, ofproto, parser, in_port, eth, v4):
dpid = datapath.id
self.logger.info("ipv4_handler : packet in %s [%s] %s %s", dpid, in_port, v4.src, v4.dst)
self.L2Learning(msg, datapath, ofproto, parser, in_port, eth.src, eth.dst)
return
def ipv6_handler(self, msg, datapath, ofproto, parser, in_port, eth, v6):
return
def arp_handler(self, msg, datapath, ofproto, parser, in_port, eth):
dpid = datapath.id
self.logger.info("arp_handler : packet in %s [%s] %s %s", dpid, in_port, eth.src, eth.dst)
self.L2Learning(msg, datapath, ofproto, parser, in_port, eth.src, eth.dst)
return
def vlan_handler(self, msg, datapath, ofproto, parser, in_port, eth):
dpid = datapath.id
self.logger.info("vlan_handler : packet in %s [%s] %s %s", dpid, in_port, eth.src, eth.dst)
return
def lldp_handler(self, msg, datapath, ofproto, parser, in_port):
# ignore lldp packet
return
@set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER)
def _packet_in_handler(self, ev):
# If you hit this you might want to increase
# the "miss_send_length" of your switch
if ev.msg.msg_len < ev.msg.total_len:
self.logger.debug("packet truncated: only %s of %s bytes",ev.msg.msg_len, ev.msg.total_len)
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
in_port = msg.match['in_port']
pkt = packet.Packet(msg.data)
eth = pkt.get_protocols(ethernet.ethernet)[0]
self.logger.info('ethernet type = '+hex(eth.ethertype)+' in_port = '+str(in_port))
if eth.ethertype == ether_types.ETH_TYPE_LLDP:
# LLDP
self.logger.info('LLDP')
self.lldp_handler(msg, datapath, ofproto, parser, in_port)
elif eth.ethertype == 0x0800:
# IPV4
v4 = pkt.get_protocols(ipv4.ipv4)[0]
if v4 :
self.logger.info('IPV4')
self.ipv4_handler(msg, datapath, ofproto, parser, in_port, eth, v4)
else :
self.logger.info('!IPV4')
elif eth.ethertype == 0x86dd:
# IPV6
v6 = pkt.get_protocols(ipv6.ipv6)[0]
if v6 :
self.logger.info('IPV6')
self.ipv6_handler(msg, datapath, ofproto, parser, in_port, eth, v6)
else :
self.logger.info('!IPV6')
elif eth.ethertype == 0x0806:
# ARP
self.logger.info('ARP')
self.arp_handler(msg, datapath, ofproto, parser, in_port, eth)
elif eth.ethertype == 0x8100:
# VLAN
self.logger.info('VLAN')
self.vlan_handler(msg, datapath, ofproto, parser, in_port, eth)
else:
self.logger.info('UNKNOW')