62 lines
2.1 KiB
Python
62 lines
2.1 KiB
Python
import asyncio
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from libp2p.security.secure_transport_interface import ISecureTransport
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from libp2p.security.secure_conn_interface import ISecureConn
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class SimpleSecurityTransport(ISecureTransport):
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def __init__(self, key_phrase):
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self.key_phrase = key_phrase
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async def secure_inbound(self, conn):
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"""
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Secure the connection, either locally or by communicating with opposing node via conn,
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for an inbound connection (i.e. we are not the initiator)
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:return: secure connection object (that implements secure_conn_interface)
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"""
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await conn.write(self.key_phrase.encode())
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incoming = (await conn.read()).decode()
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if incoming != self.key_phrase:
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raise Exception("Key phrase differed between nodes. Expected " + self.key_phrase)
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secure_conn = SimpleSecureConn(conn, self.key_phrase)
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return secure_conn
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async def secure_outbound(self, conn, peer_id):
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"""
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Secure the connection, either locally or by communicating with opposing node via conn,
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for an inbound connection (i.e. we are the initiator)
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:return: secure connection object (that implements secure_conn_interface)
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"""
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await conn.write(self.key_phrase.encode())
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incoming = (await conn.read()).decode()
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# Force context switch, as this security transport is built for testing locally
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# in a single event loop
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await asyncio.sleep(0)
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if incoming != self.key_phrase:
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raise Exception("Key phrase differed between nodes. Expected " + self.key_phrase)
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secure_conn = SimpleSecureConn(conn, self.key_phrase)
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return secure_conn
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class SimpleSecureConn(ISecureConn):
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def __init__(self, conn, key_phrase):
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self.conn = conn
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self.details = {}
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self.details["key_phrase"] = key_phrase
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def get_conn(self):
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"""
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:return: connection object that has been made secure
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"""
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return self.conn
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def get_security_details(self):
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"""
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:return: map containing details about the connections security
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"""
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return self.details
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