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32 lines
1.2 KiB
Python
32 lines
1.2 KiB
Python
import re
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from django.conf import settings
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from django.core.validators import _lazy_re_compile, BaseValidator, URLValidator
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class EnhancedURLValidator(URLValidator):
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"""
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Extends Django's built-in URLValidator to permit the use of hostnames with no domain extension and enforce allowed
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schemes specified in the configuration.
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"""
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fqdn_re = URLValidator.hostname_re + URLValidator.domain_re + URLValidator.tld_re
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host_res = [URLValidator.ipv4_re, URLValidator.ipv6_re, fqdn_re, URLValidator.hostname_re]
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regex = _lazy_re_compile(
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r'^(?:[a-z0-9\.\-\+]*)://' # Scheme (enforced separately)
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r'(?:\S+(?::\S*)?@)?' # HTTP basic authentication
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r'(?:' + '|'.join(host_res) + ')' # IPv4, IPv6, FQDN, or hostname
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r'(?::\d{2,5})?' # Port number
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r'(?:[/?#][^\s]*)?' # Path
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r'\Z', re.IGNORECASE)
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schemes = settings.ALLOWED_URL_SCHEMES
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class ExclusionValidator(BaseValidator):
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"""
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Ensure that a field's value is not equal to any of the specified values.
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"""
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message = 'This value may not be %(show_value)s.'
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def compare(self, a, b):
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return a in b
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