mirror of
https://github.com/Grasscutters/mitmproxy.git
synced 2024-11-27 02:24:18 +00:00
1ffc273c94
- Move more stuff that belongs in netlib.human - Move some stuff to near the only use - Zap mitmproxy.utils.timestamp(). I see the rationale, but we used it interchangeably with time.time() throughout the project. Since time.time() dominates in the codebase and timestamp() is such low utility, away it goes.
95 lines
2.3 KiB
Python
95 lines
2.3 KiB
Python
from __future__ import absolute_import, print_function, division
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import os.path
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import re
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import importlib
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import inspect
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def setbit(byte, offset, value):
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"""
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Set a bit in a byte to 1 if value is truthy, 0 if not.
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"""
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if value:
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return byte | (1 << offset)
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else:
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return byte & ~(1 << offset)
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def getbit(byte, offset):
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mask = 1 << offset
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return bool(byte & mask)
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class BiDi(object):
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"""
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A wee utility class for keeping bi-directional mappings, like field
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constants in protocols. Names are attributes on the object, dict-like
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access maps values to names:
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CONST = BiDi(a=1, b=2)
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assert CONST.a == 1
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assert CONST.get_name(1) == "a"
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"""
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def __init__(self, **kwargs):
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self.names = kwargs
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self.values = {}
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for k, v in kwargs.items():
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self.values[v] = k
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if len(self.names) != len(self.values):
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raise ValueError("Duplicate values not allowed.")
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def __getattr__(self, k):
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if k in self.names:
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return self.names[k]
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raise AttributeError("No such attribute: %s", k)
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def get_name(self, n, default=None):
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return self.values.get(n, default)
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class Data(object):
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def __init__(self, name):
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m = importlib.import_module(name)
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dirname = os.path.dirname(inspect.getsourcefile(m))
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self.dirname = os.path.abspath(dirname)
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def path(self, path):
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"""
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Returns a path to the package data housed at 'path' under this
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module.Path can be a path to a file, or to a directory.
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This function will raise ValueError if the path does not exist.
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"""
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fullpath = os.path.join(self.dirname, path)
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if not os.path.exists(fullpath):
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raise ValueError("dataPath: %s does not exist." % fullpath)
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return fullpath
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_label_valid = re.compile(b"(?!-)[A-Z\d-]{1,63}(?<!-)$", re.IGNORECASE)
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def is_valid_host(host):
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"""
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Checks if a hostname is valid.
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Args:
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host (bytes): The hostname
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"""
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try:
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host.decode("idna")
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except ValueError:
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return False
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if len(host) > 255:
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return False
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if host[-1] == b".":
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host = host[:-1]
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return all(_label_valid.match(x) for x in host.split(b"."))
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def is_valid_port(port):
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return 0 <= port <= 65535
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