mirror of
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33 lines
1.0 KiB
Python
33 lines
1.0 KiB
Python
from .rawtcp import TcpLayer
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from .tls import TlsLayer
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class RootContext(object):
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"""
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The outmost context provided to the root layer.
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As a consequence, every layer has .client_conn, .channel, .next_layer() and .config.
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"""
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def __init__(self, client_conn, config, channel):
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self.client_conn = client_conn # Client Connection
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self.channel = channel # provides .ask() method to communicate with FlowMaster
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self.config = config # Proxy Configuration
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def next_layer(self, top_layer):
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"""
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This function determines the next layer in the protocol stack.
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:param top_layer: the current top layer
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:return: The next layer.
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"""
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d = top_layer.client_conn.rfile.peek(1)
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if not d:
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return
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# TLS ClientHello magic, see http://www.moserware.com/2009/06/first-few-milliseconds-of-https.html#client-hello
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if d[0] == "\x16":
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layer = TlsLayer(top_layer, True, True)
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else:
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layer = TcpLayer(top_layer)
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return layer
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