mirror of
https://github.com/Grasscutters/mitmproxy.git
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84 lines
1.9 KiB
Python
84 lines
1.9 KiB
Python
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import netlib.websockets
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import contrib.pyparsing as pp
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from . import base, generators, actions, message
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"""
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wf:ctext:b'foo'
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wf:c15:r'foo'
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wf:fin:rsv1:rsv2:rsv3:mask
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wf:-fin:-rsv1:-rsv2:-rsv3:-mask
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wf:p234
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wf:m"mask"
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"""
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class WF(base.CaselessLiteral):
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TOK = "wf"
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class Body(base.PreValue):
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preamble = "b"
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class WebsocketFrame(message.Message):
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comps = (
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Body,
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actions.PauseAt,
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actions.DisconnectAt,
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actions.InjectAt
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)
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logattrs = ["body"]
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@property
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def actions(self):
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return self.toks(actions._Action)
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@property
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def body(self):
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return self.tok(Body)
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@classmethod
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def expr(klass):
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parts = [i.expr() for i in klass.comps]
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atom = pp.MatchFirst(parts)
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resp = pp.And(
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[
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WF.expr(),
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base.Sep,
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pp.ZeroOrMore(base.Sep + atom)
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]
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)
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resp = resp.setParseAction(klass)
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return resp
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def values(self, settings):
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vals = []
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if self.body:
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bodygen = self.body.value.get_generator(settings)
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length = len(self.body.value.get_generator(settings))
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else:
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bodygen = None
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length = 0
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frame = netlib.websockets.FrameHeader(
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mask = True,
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payload_length = length
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)
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vals = [frame.to_bytes()]
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if self.body:
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masker = netlib.websockets.Masker(frame.masking_key)
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vals.append(
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generators.TransformGenerator(
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bodygen,
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masker.mask
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)
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)
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return vals
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def resolve(self, settings, msg=None):
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return self.__class__(
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[i.resolve(settings, msg) for i in self.tokens]
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)
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def spec(self):
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return ":".join([i.spec() for i in self.tokens])
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