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Use shallow copy for ranked dicts when user_inputs are present in omnimatch #87

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Use shallow copy for ranked dicts when user_inputs are present in omnimatch #87

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e755397
add failing test on user_inputs side effects
May 7, 2025
aa9ed64
Clear _ranked_dictionaries['user_inputs'] when no user_inputs given
May 7, 2025
c4951d4
use shallow copy for ranked dicts when user_inputs are present
AbsurdlySuspicious Jun 12, 2025
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10 changes: 10 additions & 0 deletions tests/zxcvbn_test.py
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Original file line number Diff line number Diff line change
Expand Up @@ -46,3 +46,13 @@ def test_empty_password():
zxcvbn(password, user_inputs=[input_])
except IndexError as ie:
assert False, "Empty password raised IndexError"


def test_user_inputs_side_effects():
password = '7r3iz3|)0uz3'
input_ = [password]

guess1 = zxcvbn(password)['guesses_log10']
zxcvbn('somepassword', user_inputs=input_)
guess2 = zxcvbn(password)['guesses_log10']
assert abs(guess1 - guess2) < 1
4 changes: 3 additions & 1 deletion zxcvbn/matching.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
from . import adjacency_graphs
import re
import functools
import copy

from zxcvbn.scoring import most_guessable_match_sequence

Expand Down Expand Up @@ -98,7 +99,8 @@ def wrapper(*args, **kwargs):
# omnimatch -- perform all matches
@ensure_ranked_dictionaries
def omnimatch(password, _ranked_dictionaries=None, user_inputs=[]):
if len(user_inputs):
if _ranked_dictionaries is not None and user_inputs:
_ranked_dictionaries = copy.copy(_ranked_dictionaries)
_ranked_dictionaries['user_inputs'] = build_ranked_dict(user_inputs)

matches = []
Expand Down