67 lines
1.7 KiB
Python
67 lines
1.7 KiB
Python
# uncompyle6 version 3.9.2
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# Python bytecode version base 3.7.0 (3394)
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# Decompiled from: Python 3.8.19 (default, Mar 20 2024, 15:27:52)
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# [Clang 14.0.6 ]
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# Embedded file name: /var/user/app/device_supervisorbak/device_supervisor/lib/jwt/compat.py
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# Compiled at: 2024-04-18 03:12:55
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# Size of source mod 2**32: 1692 bytes
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"""
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The `compat` module provides support for backwards compatibility with older
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versions of python, and compatibility wrappers around optional packages.
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"""
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import hmac, struct, sys
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PY3 = sys.version_info[0] == 3
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if PY3:
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text_type = str
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binary_type = bytes
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else:
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text_type = unicode
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binary_type = str
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string_types = (text_type, binary_type)
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try:
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from collections.abc import Iterable, Mapping
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except ImportError:
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from collections import Iterable, Mapping
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try:
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constant_time_compare = hmac.compare_digest
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except AttributeError:
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def constant_time_compare(val1, val2):
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"""
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Returns True if the two strings are equal, False otherwise.
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The time taken is independent of the number of characters that match.
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"""
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if len(val1) != len(val2):
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return False
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result = 0
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for x, y in zip(val1, val2):
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result |= ord(x) ^ ord(y)
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return result == 0
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if getattr(int, "to_bytes", None):
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def bytes_from_int(val):
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remaining = val
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byte_length = 0
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while remaining != 0:
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remaining = remaining >> 8
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byte_length += 1
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return val.to_bytes(byte_length, "big", signed=False)
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else:
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def bytes_from_int(val):
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buf = []
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while val:
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val, remainder = divmod(val, 256)
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buf.append(remainder)
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buf.reverse()
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return (struct.pack)("%sB" % len(buf), *buf)
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