125 lines
4.7 KiB
Python
125 lines
4.7 KiB
Python
# MIT License
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#
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# Copyright (c) 2016-2022 Mark Qvist / unsigned.io
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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from .Interface import Interface
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import socketserver
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import threading
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import socket
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import time
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import sys
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import RNS
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class UDPInterface(Interface):
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BITRATE_GUESS = 10*1000*1000
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@staticmethod
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def get_address_for_if(name):
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import importlib
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if importlib.util.find_spec('netifaces') != None:
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import netifaces
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return netifaces.ifaddresses(name)[netifaces.AF_INET][0]['addr']
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else:
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RNS.log("Getting interface addresses from device names requires the netifaces module.", RNS.LOG_CRITICAL)
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RNS.log("You can install it with the command: python3 -m pip install netifaces", RNS.LOG_CRITICAL)
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RNS.panic()
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@staticmethod
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def get_broadcast_for_if(name):
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import importlib
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if importlib.util.find_spec('netifaces') != None:
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import netifaces
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return netifaces.ifaddresses(name)[netifaces.AF_INET][0]['broadcast']
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else:
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RNS.log("Getting interface addresses from device names requires the netifaces module.", RNS.LOG_CRITICAL)
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RNS.log("You can install it with the command: python3 -m pip install netifaces", RNS.LOG_CRITICAL)
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RNS.panic()
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def __init__(self, owner, name, device=None, bindip=None, bindport=None, forwardip=None, forwardport=None):
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self.rxb = 0
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self.txb = 0
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self.IN = True
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self.OUT = False
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self.name = name
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self.online = False
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self.bitrate = UDPInterface.BITRATE_GUESS
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if device != None:
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if bindip == None:
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bindip = UDPInterface.get_broadcast_for_if(device)
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if forwardip == None:
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forwardip = UDPInterface.get_broadcast_for_if(device)
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if (bindip != None and bindport != None):
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self.receives = True
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self.bind_ip = bindip
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self.bind_port = bindport
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def handlerFactory(callback):
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def createHandler(*args, **keys):
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return UDPInterfaceHandler(callback, *args, **keys)
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return createHandler
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self.owner = owner
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address = (self.bind_ip, self.bind_port)
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socketserver.UDPServer.address_family = socket.AF_INET
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self.server = socketserver.UDPServer(address, handlerFactory(self.processIncoming))
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thread = threading.Thread(target=self.server.serve_forever)
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thread.setDaemon(True)
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thread.start()
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self.online = True
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if (forwardip != None and forwardport != None):
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self.forwards = True
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self.forward_ip = forwardip
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self.forward_port = forwardport
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def processIncoming(self, data):
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self.rxb += len(data)
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self.owner.inbound(data, self)
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def processOutgoing(self,data):
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try:
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udp_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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udp_socket.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
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udp_socket.sendto(data, (self.forward_ip, self.forward_port))
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self.txb += len(data)
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except Exception as e:
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RNS.log("Could not transmit on "+str(self)+". The contained exception was: "+str(e), RNS.LOG_ERROR)
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def __str__(self):
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return "UDPInterface["+self.name+"/"+self.bind_ip+":"+str(self.bind_port)+"]"
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class UDPInterfaceHandler(socketserver.BaseRequestHandler):
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def __init__(self, callback, *args, **keys):
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self.callback = callback
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socketserver.BaseRequestHandler.__init__(self, *args, **keys)
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def handle(self):
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data = self.request[0]
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self.callback(data) |