mirror of
https://github.com/Grasscutters/mitmproxy.git
synced 2024-11-25 09:37:37 +00:00
121 lines
4.3 KiB
Python
121 lines
4.3 KiB
Python
"""
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Save streamed requests and responses
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If the option 'save_streamed_data' is set to a format string then
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streamed requests and responses are written to individual files with a name
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derived from the string. Apart from python strftime() formating (using the
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request start time) the following codes can also be used:
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- %+T: The time stamp of the request with microseconds
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- %+D: 'req' or 'rsp' indicating the direction of the data
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- %+I: The client connection ID
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- %+C: The client IP address
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A good starting point for a template could be '~/streamed_files/%+D:%+T:%+I',
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a more complex example is '~/streamed_files/%+C/%Y-%m-%d%/%+D:%+T:%+I'.
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The client connection ID combined with the request time stamp should be unique
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for associating a file with its corresponding flow in the stream saved with
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'--save-stream-file'.
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This addon is not compatible with addons that use the same mechanism to
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capture streamed data, http-stream-modify.py for instance.
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"""
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from mitmproxy import ctx
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from datetime import datetime
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from pathlib import Path
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import os
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import typing
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class StreamSaver:
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TAG = "save_streamed_data: "
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def __init__(self, flow, direction):
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self.flow = flow
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self.direction = direction
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self.fh = None
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self.path = None
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def done(self):
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if self.fh:
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self.fh.close()
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self.fh = None
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# Make sure we have no circular references
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self.flow = None
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def __call__(self, data):
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# End of stream?
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if len(data) == 0:
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self.done()
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return data
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# Just in case the option changes while a stream is in flight
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if not ctx.options.save_streamed_data:
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return data
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# This is a safeguard but should not be needed
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if not self.flow or not self.flow.request:
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return data
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if not self.fh:
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self.path = datetime.fromtimestamp(self.flow.request.timestamp_start).strftime(ctx.options.save_streamed_data)
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self.path = self.path.replace('%+T', str(self.flow.request.timestamp_start))
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self.path = self.path.replace('%+I', str(self.flow.client_conn.id))
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self.path = self.path.replace('%+D', self.direction)
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self.path = self.path.replace('%+C', self.flow.client_conn.address[0])
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self.path = os.path.expanduser(self.path)
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parent = Path(self.path).parent
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try:
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if not parent.exists():
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parent.mkdir(parents=True, exist_ok=True)
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except OSError:
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ctx.log.error(f"{self.TAG}Failed to create directory: {parent}")
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try:
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self.fh = open(self.path, "wb", buffering=0)
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except OSError:
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ctx.log.error(f"{self.TAG}Failed to open for writing: {self.path}")
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if self.fh:
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try:
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self.fh.write(data)
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except OSError:
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ctx.log.error(f"{self.TAG}Failed to write to: {self.path}")
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return data
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def load(loader):
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loader.add_option(
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"save_streamed_data", typing.Optional[str], None,
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"Format string for saving streamed data to files. If set each streamed request or response is written "
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"to a file with a name derived from the string. In addition to formating supported by python "
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"strftime() (using the request start time) the code '%+T' is replaced with the time stamp of the request, "
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"'%+D' by 'req' or 'rsp' depending on the direction of the data, '%+C' by the client IP addresses and "
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"'%+I' by the client connection ID."
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)
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def requestheaders(flow):
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if ctx.options.save_streamed_data and flow.request.stream:
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flow.request.stream = StreamSaver(flow, 'req')
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def responseheaders(flow):
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if isinstance(flow.request.stream, StreamSaver):
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flow.request.stream.done()
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if ctx.options.save_streamed_data and flow.response.stream:
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flow.response.stream = StreamSaver(flow, 'rsp')
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def response(flow):
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if isinstance(flow.response.stream, StreamSaver):
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flow.response.stream.done()
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def error(flow):
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if flow.request and isinstance(flow.request.stream, StreamSaver):
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flow.request.stream.done()
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if flow.response and isinstance(flow.response.stream, StreamSaver):
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flow.response.stream.done()
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