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ipaddress: Use str.isascii() instead of frozenset (GH-5811)

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INADA Naoki 2018-02-23 20:02:41 +09:00 committed by GitHub
parent 33dddac00b
commit 58a1096761
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 3 deletions
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5
Lib/ipaddress.py
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@ -488,7 +488,7 @@ class _IPAddressBase:
"""
# int allows a leading +/- as well as surrounding whitespace,
# so we ensure that isn't the case
if not _BaseV4._DECIMAL_DIGITS.issuperset(prefixlen_str):
if not (prefixlen_str.isascii() and prefixlen_str.isdigit()):
cls._report_invalid_netmask(prefixlen_str)
try:
prefixlen = int(prefixlen_str)
@ -1076,7 +1076,6 @@ class _BaseV4:
_version = 4
# Equivalent to 255.255.255.255 or 32 bits of 1's.
_ALL_ONES = (2**IPV4LENGTH) - 1
_DECIMAL_DIGITS = frozenset('0123456789')
# the valid octets for host and netmasks. only useful for IPv4.
_valid_mask_octets = frozenset({255, 254, 252, 248, 240, 224, 192, 128, 0})
@ -1156,7 +1155,7 @@ class _BaseV4:
if not octet_str:
raise ValueError("Empty octet not permitted")
# Whitelist the characters, since int() allows a lot of bizarre stuff.
if not cls._DECIMAL_DIGITS.issuperset(octet_str):
if not (octet_str.isascii() and octet_str.isdigit()):
msg = "Only decimal digits permitted in %r"
raise ValueError(msg % octet_str)
# We do the length check second, since the invalid character error