def addDevice(self,device):
"""Fügt ein EthernetDevice zu diesem Router hinzu."""
self.model.devs.append([device.ipaddr, device.subnetmask, device])
self.connectors.append(device)
# Route für dieses Netz hinzufügen
myip = routing.binaryIP(device.ipaddr)
mymask = routing.binaryIP(device.subnetmask)
mynet = myip & mymask
self.model.routes.append(routing.Route(routing.binaryIP2String(mynet), device.subnetmask, None, 10, len(self.connectors)-1))
def __init__(self, x, y, devlist):
super(Router, self).__init__(x, y, model = NodeModel())
self.fillcolor = "#3333ff"
# Routen
self.model.routes = []
# Konfigurationsdaten der Ethernet-Devices
self.model.devs = []
# ARP Queue beinhaltet alle Pakete, die auf ein MAC warten
self.model.arpqueue = []
# ARP Cache
self.model.arpcache = {}
# Some statistics: Number of packets for this host
self.model.inboundpackets = 0
self.model.forwardedpackets = 0
for dev in devlist:
self.model.devs.append([dev[0], dev[1], dev[2]])
dev[2].node = self
self.connectors.append(dev[2])
# Lokale Netze werden automatisch in Routingtabelle geschrieben
myip = routing.binaryIP(dev[0])
mymask = routing.binaryIP(dev[1])
mynet = myip & mymask
self.model.routes.append(routing.Route(routing.binaryIP2String(mynet), dev[1], None, 10, len(self.connectors)-1))
# Kontext-Menü für Hosts
self.contextmenu = m = wx.Menu()
self.contextMenuHandler = self.onContextMenu
m.AppendCheckItem(10001, "Online")
m.Append(10002, "&ARP-Request senden")
m.Append(10003, "&IP-Paket senden")
m.Append(10004, "&Routingtabelle")
m.Append(10005, "ARP &Cache")
m.Append(10006, "&Statistik löschen")
# Binde die beiden Kontextmenüeinträge an Methoden
self.bindCommand(10001, self.onOnlineStateCommand)
self.bindCommand(10002, self.onSendPacketCommand)
self.bindCommand(10003, self.onSendIPPacketCommand)
self.bindCommand(10004, self.onEditRoutingTableCommand)
self.bindCommand(10005, self.onViewARPCacheCommand)
self.bindCommand(10006, self.onClearStatsCommand)
def isValidRoute(self, row):
"""Überprüft, ob Zeile row eine gültige Route darstellt, und liefert
entsprechend True oder False."""
try:
for i in range(2):
val = routing.binaryIP(self.GetCellValue(row, i))
gw = self.GetCellValue(3,i)
if gw != '' and not routing.isValidIP(gw):
raise ValueError
metric = int(self.GetCellValue(row, 3))
device = int(self.GetCellValue(row, 4))
return True
except ValueError:
return False