67 lines
2.6 KiB
Python
67 lines
2.6 KiB
Python
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import socket
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import protocol
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class Node (object):
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TYPE_IPV4 = 1
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TYPE_IPV6 = 2
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TYPE_ONION = 3
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TYPE_LOCAL = 4
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TYPE_LOOPBACK = 8
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TYPE_UNDEF = 12
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def __init__(self, services, address, port):
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self.services = services
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self.address, self.addressType = Node.decodeIPAddress(address)
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self.port = port
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def isLocal(self):
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return self.addressType | Node.TYPE_LOCAL > 0
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def isGlobal(self):
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return self.addressType <= Node.TYPE_ONION
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def isOnion(self):
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return self.addressType | Node.TYPE_ONION > 0
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def isLoopback(self):
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return self.addressType | Node.TYPE_LOOPBACK > 0
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@staticmethod
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def decodeIPAddress(host):
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if host[0:12] == '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF':
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hostStandardFormat = socket.inet_ntop(socket.AF_INET, host[12:])
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return Node.decodeIPv4Address(host[12:], hostStandardFormat)
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elif host[0:6] == '\xfd\x87\xd8\x7e\xeb\x43':
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# Onion, based on BMD/bitcoind
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hostStandardFormat = base64.b32encode(host[6:]).lower() + ".onion"
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return hostStandardFormat, Node.TYPE_ONION
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else:
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hostStandardFormat = socket.inet_ntop(socket.AF_INET6, host)
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if hostStandardFormat == "":
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# This can happen on Windows systems which are not 64-bit compatible
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# so let us drop the IPv6 address.
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return hostStandardFormat, Node.TYPE_IPV6|Node.TYPE_UNDEF
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return Node.decodeIPv6Address(host, hostStandardFormat)
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@staticmethod
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def decodeIPv4Address(host, hostStandardFormat):
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if host[0] == '\x7F': # 127/8
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return hostStandardFormat, Node.TYPE_IPV4|Node.TYPE_LOOPBACK
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if host[0] == '\x0A': # 10/8
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return hostStandardFormat, Node.TYPE_IPV4|Node.TYPE_LOCAL
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if host[0:2] == '\xC0\xA8': # 192.168/16
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return hostStandardFormat, Node.TYPE_IPV4|Node.TYPE_LOCAL
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if host[0:2] >= '\xAC\x10' and host[0:2] < '\xAC\x20': # 172.16/12
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return hostStandardFormat, Node.TYPE_IPV4|Node.TYPE_LOCAL
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return hostStandardFormat, Node.TYPE_IPV4
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@staticmethod
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def _checkIPv6Address(host, hostStandardFormat):
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if host == ('\x00' * 15) + '\x01':
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return hostStandardFormat, Node.TYPE_IPV6|Node.TYPE_LOOPBACK
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if host[0] == '\xFE' and (ord(host[1]) & 0xc0) == 0x80:
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return hostStandardFormat, Node.TYPE_IPV6|Node.TYPE_LOCAL
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if (ord(host[0]) & 0xfe) == 0xfc:
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return hostStandardFormat, Node.TYPE_IPV6|Node.TYPE_UNDEF
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return hostStandardFormat, Node.TYPE_IPV6
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