54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
#!/usr/bin/env python3
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# coding=utf-8
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import logging
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import re
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from bdfr.resource import Resource
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logger = logging.getLogger(__name__)
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class DownloadFilter:
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def __init__(self, excluded_extensions: list[str] = None, excluded_domains: list[str] = None):
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self.excluded_extensions = excluded_extensions
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self.excluded_domains = excluded_domains
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def check_url(self, url: str) -> bool:
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"""Return whether a URL is allowed or not"""
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if not self._check_extension(url):
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return False
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elif not self._check_domain(url):
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return False
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else:
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return True
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def check_resource(self, res: Resource) -> bool:
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if not self._check_extension(res.extension):
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return False
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elif not self._check_domain(res.url):
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return False
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return True
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def _check_extension(self, resource_extension: str) -> bool:
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if not self.excluded_extensions:
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return True
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combined_extensions = '|'.join(self.excluded_extensions)
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pattern = re.compile(r'.*({})$'.format(combined_extensions))
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if re.match(pattern, resource_extension):
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logger.log(9, f'Url "{resource_extension}" matched with "{str(pattern)}"')
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return False
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else:
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return True
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def _check_domain(self, url: str) -> bool:
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if not self.excluded_domains:
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return True
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combined_domains = '|'.join(self.excluded_domains)
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pattern = re.compile(r'https?://.*({}).*'.format(combined_domains))
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if re.match(pattern, url):
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logger.log(9, f'Url "{url}" matched with "{str(pattern)}"')
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return False
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else:
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return True
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