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import os
from django.conf import settings
from django.utils.module_loading import import_string
CAPTCHA_FONT_PATH = getattr(
settings,
"CAPTCHA_FONT_PATH",
os.path.normpath(os.path.join(os.path.dirname(__file__), "..", "fonts/Vera.ttf")),
)
CAPTCHA_FONT_SIZE = getattr(settings, "CAPTCHA_FONT_SIZE", 22)
CAPTCHA_LETTER_ROTATION = getattr(settings, "CAPTCHA_LETTER_ROTATION", (-35, 35))
CAPTCHA_BACKGROUND_COLOR = getattr(settings, "CAPTCHA_BACKGROUND_COLOR", "#ffffff")
CAPTCHA_FOREGROUND_COLOR = getattr(settings, "CAPTCHA_FOREGROUND_COLOR", "#001100")
CAPTCHA_LETTER_COLOR_FUNCT = getattr(settings, "CAPTCHA_LETTER_COLOR_FUNCT", None)
CAPTCHA_CHALLENGE_FUNCT = getattr(
settings, "CAPTCHA_CHALLENGE_FUNCT", "captcha.helpers.random_char_challenge"
)
CAPTCHA_NOISE_FUNCTIONS = getattr(
settings,
"CAPTCHA_NOISE_FUNCTIONS",
("captcha.helpers.noise_arcs", "captcha.helpers.noise_dots"),
)
CAPTCHA_FILTER_FUNCTIONS = getattr(
settings, "CAPTCHA_FILTER_FUNCTIONS", ("captcha.helpers.post_smooth",)
)
CAPTCHA_WORDS_DICTIONARY = getattr(
settings, "CAPTCHA_WORDS_DICTIONARY", "/usr/share/dict/words"
)
CAPTCHA_PUNCTUATION = getattr(settings, "CAPTCHA_PUNCTUATION", """_"',.;:-""")
CAPTCHA_FLITE_PATH = getattr(settings, "CAPTCHA_FLITE_PATH", None)
CAPTCHA_SOX_PATH = getattr(settings, "CAPTCHA_SOX_PATH", None)
CAPTCHA_TIMEOUT = getattr(settings, "CAPTCHA_TIMEOUT", 5) # Minutes
CAPTCHA_LENGTH = int(getattr(settings, "CAPTCHA_LENGTH", 4)) # Chars
# CAPTCHA_IMAGE_BEFORE_FIELD = getattr(settings, 'CAPTCHA_IMAGE_BEFORE_FIELD', True)
CAPTCHA_DICTIONARY_MIN_LENGTH = getattr(settings, "CAPTCHA_DICTIONARY_MIN_LENGTH", 0)
CAPTCHA_DICTIONARY_MAX_LENGTH = getattr(settings, "CAPTCHA_DICTIONARY_MAX_LENGTH", 99)
CAPTCHA_IMAGE_SIZE = getattr(settings, "CAPTCHA_IMAGE_SIZE", None)
CAPTCHA_MATH_CHALLENGE_OPERATOR = getattr(
settings, "CAPTCHA_MATH_CHALLENGE_OPERATOR", "*"
)
CAPTCHA_GET_FROM_POOL = getattr(settings, "CAPTCHA_GET_FROM_POOL", False)
CAPTCHA_GET_FROM_POOL_TIMEOUT = getattr(settings, "CAPTCHA_GET_FROM_POOL_TIMEOUT", 5)
CAPTCHA_TEST_MODE = getattr(settings, "CAPTCHA_TEST_MODE", False)
CAPTCHA_2X_IMAGE = getattr(settings, "CAPTCHA_2X_IMAGE", True)
# Failsafe
if CAPTCHA_DICTIONARY_MIN_LENGTH > CAPTCHA_DICTIONARY_MAX_LENGTH:
CAPTCHA_DICTIONARY_MIN_LENGTH, CAPTCHA_DICTIONARY_MAX_LENGTH = (
CAPTCHA_DICTIONARY_MAX_LENGTH,
CAPTCHA_DICTIONARY_MIN_LENGTH,
)
def _callable_from_string(string_or_callable):
if callable(string_or_callable):
return string_or_callable
elif isinstance(string_or_callable, str):
return import_string(string_or_callable)
def get_challenge(generator=None):
return _callable_from_string(generator or CAPTCHA_CHALLENGE_FUNCT)
def noise_functions():
if CAPTCHA_NOISE_FUNCTIONS:
return map(_callable_from_string, CAPTCHA_NOISE_FUNCTIONS)
return []
def filter_functions():
if CAPTCHA_FILTER_FUNCTIONS:
return map(_callable_from_string, CAPTCHA_FILTER_FUNCTIONS)
return []
def get_letter_color(index, challenge):
if CAPTCHA_LETTER_COLOR_FUNCT:
return _callable_from_string(CAPTCHA_LETTER_COLOR_FUNCT)(index, challenge)
return CAPTCHA_FOREGROUND_COLOR
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