mirror of
https://github.com/Grasscutters/mitmproxy.git
synced 2024-11-27 02:24:18 +00:00
113 lines
2.6 KiB
Python
113 lines
2.6 KiB
Python
from __future__ import (absolute_import, print_function, division)
|
|
|
|
|
|
def isascii(s):
|
|
try:
|
|
s.decode("ascii")
|
|
except ValueError:
|
|
return False
|
|
return True
|
|
|
|
|
|
# best way to do it in python 2.x
|
|
def bytes_to_int(i):
|
|
return int(i.encode('hex'), 16)
|
|
|
|
|
|
def cleanBin(s, fixspacing=False):
|
|
"""
|
|
Cleans binary data to make it safe to display. If fixspacing is True,
|
|
tabs, newlines and so forth will be maintained, if not, they will be
|
|
replaced with a placeholder.
|
|
"""
|
|
parts = []
|
|
for i in s:
|
|
o = ord(i)
|
|
if (o > 31 and o < 127):
|
|
parts.append(i)
|
|
elif i in "\n\t" and not fixspacing:
|
|
parts.append(i)
|
|
else:
|
|
parts.append(".")
|
|
return "".join(parts)
|
|
|
|
|
|
def hexdump(s):
|
|
"""
|
|
Returns a set of tuples:
|
|
(offset, hex, str)
|
|
"""
|
|
parts = []
|
|
for i in range(0, len(s), 16):
|
|
o = "%.10x" % i
|
|
part = s[i:i + 16]
|
|
x = " ".join("%.2x" % ord(i) for i in part)
|
|
if len(part) < 16:
|
|
x += " "
|
|
x += " ".join(" " for i in range(16 - len(part)))
|
|
parts.append(
|
|
(o, x, cleanBin(part, True))
|
|
)
|
|
return parts
|
|
|
|
|
|
def setbit(byte, offset, value):
|
|
"""
|
|
Set a bit in a byte to 1 if value is truthy, 0 if not.
|
|
"""
|
|
if value:
|
|
return byte | (1 << offset)
|
|
else:
|
|
return byte & ~(1 << offset)
|
|
|
|
|
|
def getbit(byte, offset):
|
|
mask = 1 << offset
|
|
if byte & mask:
|
|
return True
|
|
|
|
|
|
class BiDi:
|
|
|
|
"""
|
|
A wee utility class for keeping bi-directional mappings, like field
|
|
constants in protocols. Names are attributes on the object, dict-like
|
|
access maps values to names:
|
|
|
|
CONST = BiDi(a=1, b=2)
|
|
assert CONST.a == 1
|
|
assert CONST.get_name(1) == "a"
|
|
"""
|
|
|
|
def __init__(self, **kwargs):
|
|
self.names = kwargs
|
|
self.values = {}
|
|
for k, v in kwargs.items():
|
|
self.values[v] = k
|
|
if len(self.names) != len(self.values):
|
|
raise ValueError("Duplicate values not allowed.")
|
|
|
|
def __getattr__(self, k):
|
|
if k in self.names:
|
|
return self.names[k]
|
|
raise AttributeError("No such attribute: %s", k)
|
|
|
|
def get_name(self, n, default=None):
|
|
return self.values.get(n, default)
|
|
|
|
|
|
def pretty_size(size):
|
|
suffixes = [
|
|
("B", 2 ** 10),
|
|
("kB", 2 ** 20),
|
|
("MB", 2 ** 30),
|
|
]
|
|
for suf, lim in suffixes:
|
|
if size >= lim:
|
|
continue
|
|
else:
|
|
x = round(size / float(lim / 2 ** 10), 2)
|
|
if x == int(x):
|
|
x = int(x)
|
|
return str(x) + suf
|