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import time
from typing import List, Optional
from mitmproxy import flow
from mitmproxy.http import HTTPFlow
from mitmproxy.net import websockets
from mitmproxy.types import serializable
from mitmproxy.utils import strutils
class WebSocketMessage(serializable.Serializable):
def __init__(self, type: int, from_client: bool, content: bytes, timestamp: Optional[int]=None):
self.type = type
self.from_client = from_client
self.content = content
self.timestamp = timestamp or time.time() # type: int
@classmethod
def from_state(cls, state):
return cls(*state)
def get_state(self):
return self.type, self.from_client, self.content, self.timestamp
def set_state(self, state):
self.type, self.from_client, self.content, self.timestamp = state
def __repr__(self):
if self.type == websockets.OPCODE.TEXT:
return "text message: {}".format(repr(self.content))
else:
return "binary message: {}".format(strutils.bytes_to_escaped_str(self.content))
class WebSocketFlow(flow.Flow):
"""
A WebsocketFlow is a simplified representation of a Websocket session.
"""
def __init__(self, client_conn, server_conn, handshake_flow, live=None):
super().__init__("websocket", client_conn, server_conn, live)
self.messages = [] # type: List[WebSocketMessage]
self.close_sender = 'client'
self.close_code = '(status code missing)'
self.close_message = '(message missing)'
self.close_reason = 'unknown status code'
self.handshake_flow = handshake_flow
_stateobject_attributes = flow.Flow._stateobject_attributes.copy()
_stateobject_attributes.update(
messages=List[WebSocketMessage],
close_sender=str,
close_code=str,
close_message=str,
close_reason=str,
handshake_flow=HTTPFlow,
)
@classmethod
def from_state(cls, state):
f = cls(None, None, None)
f.set_state(state)
return f
def __repr__(self):
return "<WebSocketFlow ({} messages)>".format(len(self.messages))
@property
def client_key(self):
return websockets.get_client_key(self.handshake_flow.request.headers)
@property
def client_protocol(self):
return websockets.get_protocol(self.handshake_flow.request.headers)
@property
def client_extensions(self):
return websockets.get_extensions(self.handshake_flow.request.headers)
@property
def server_accept(self):
return websockets.get_server_accept(self.handshake_flow.response.headers)
@property
def server_protocol(self):
return websockets.get_protocol(self.handshake_flow.response.headers)
@property
def server_extensions(self):
return websockets.get_extensions(self.handshake_flow.response.headers)
def message_info(self, message: WebSocketMessage) -> str:
return "{client} {direction} WebSocket {type} message {direction} {server}{endpoint}".format(
type=message.type,
client=repr(self.client_conn.address),
server=repr(self.server_conn.address),
direction="->" if message.from_client else "<-",
endpoint=self.handshake_flow.request.path,
)
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