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'''
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searx is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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searx is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with searx. If not, see < http://www.gnu.org/licenses/ >.
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(C) 2015 by Adam Tauber, <asciimoo@gmail.com>
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'''
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from flask_babel import gettext
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import re
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from urllib.parse import urlunparse, parse_qsl, urlencode
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regexes = {re.compile(r'utm_[^&]+'),
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re.compile(r'(wkey|wemail)[^&]*'),
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re.compile(r'(_hsenc|_hsmi|hsCtaTracking|__hssc|__hstc|__hsfp)[^&]*'),
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re.compile(r'&$')}
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name = gettext('Tracker URL remover')
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description = gettext('Remove trackers arguments from the returned URL')
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default_on = True
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preference_section = 'privacy'
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def on_result(request, search, result):
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if 'parsed_url' not in result:
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return True
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query = result['parsed_url'].query
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if query == "":
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return True
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parsed_query = parse_qsl(query)
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changes = 0
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for i, (param_name, _) in enumerate(list(parsed_query)):
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for reg in regexes:
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if reg.match(param_name):
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parsed_query.pop(i - changes)
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changes += 1
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result['parsed_url'] = result['parsed_url']._replace(query=urlencode(parsed_query))
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result['url'] = urlunparse(result['parsed_url'])
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break
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return True
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