107 lines
2.9 KiB
Python
107 lines
2.9 KiB
Python
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from natpmp import NATPMP as pmp
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from aioupnp.upnp import UPnP
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from requests import get
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from .background import Background
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class AcrossNat(object):
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def __init__(self):
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self.external_ip = None
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self.upnp = None
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self.pmp_supported = True
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self.upnp_supported = True
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self.init_pmp()
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async def init_upnp(self):
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if self.upnp is None:
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self.upnp = await UPnP.discover()
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def init_pmp(self):
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try:
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self.external_ip = pmp.get_public_address()
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except pmp.NATPMPUnsupportedError:
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self.pmp_supported = False
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async def get_external_ip(self):
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if self.pmp_supported:
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self.external_ip = pmp.get_public_address()
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return self.external_ip
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if self.upnp_supported:
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if self.upnp is None:
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await self.init_upnp()
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return await self.upnp.get_external_ip()
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try:
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return get('https://api.ipify.org').text
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except:
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return get('https://ipapi.co/ip/').text
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async def upnp_map_port(self, inner_port,
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protocol='TCP', from_port=40003, ip=None, desc=None):
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if self.upnp is None:
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await self.init_upnp()
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protocol = protocol.upper()
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if ip is None:
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ip = self.upnp.lan_address
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all_mappings = [i for i in await self.upnp.get_redirects()]
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x = [ i for i in all_mappings if i.internal_port == inner_port \
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and i.lan_address == ip \
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and i.protocol == protocol ]
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if len(x) > 0:
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return x[0].external_port
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occupied_ports = [ i.external_port for i in all_mappings if i.protocol == protocol ]
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external_port = from_port
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while external_port < 52333:
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if external_port not in occupied_ports:
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break
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external_port += 1
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if external_port < 52333:
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await self.upnp.add_port_mapping(external_port,
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protocol,
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inner_port,
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ip,
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desc or 'user added')
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return external_port
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return None
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async def is_port_mapped(self, external_port, protocol='TCP'):
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if self.upnp is None:
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await self.init_upnp()
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protocol = protocol.upper()
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if self.upnp_supported:
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x = await self.upnp.get_specific_port_mapping(external_port,
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protocol)
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if len(x) == 0:
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return True
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return False
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raise Exception('not implemented')
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async def port_unmap(self, external_port, protocol='TCP'):
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if self.upnp is None:
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await self.init_upnp()
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protocol = protocol.upper()
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if self.upnp_supported:
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await self.upnp.delete_port_mapping(external_port, protocol)
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raise Exception('not implemented')
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def pmp_map_port(self, inner_port, protocol='TCP', from_port=40003):
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if protocol.upper() == 'TCP':
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x = pmp.map_tcp_port(from_port, inner_port,
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lifetime=999999999)
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return x.public_port
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x = pmp.map_udp_port(from_port, inner_port,
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lifetime=999999999)
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return x.public_port
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async def map_port(self, inner_port, protocol='tcp', from_port=40003, lan_ip=None, desc=None):
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if self.pmp_supported:
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return self.pmp_map_port(inner_port, protocol=protocol)
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return await self.upnp_map_port( inner_port, protocol=protocol, ip=lan_ip, desc=desc)
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