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#!/usr/bin/env python
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# lint: pylint
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# SPDX-License-Identifier: AGPL-3.0-or-later
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"""Fetch firefox useragent signatures
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Output file: :origin:`searx/data/useragents.json` (:origin:`CI Update data ...
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<.github/workflows/data-update.yml>`).
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"""
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import json
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import re
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from os.path import join
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from urllib.parse import urlparse, urljoin
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from distutils.version import LooseVersion # pylint: disable=deprecated-module
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import requests
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from lxml import html
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from searx import searx_dir
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URL = 'https://ftp.mozilla.org/pub/firefox/releases/'
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RELEASE_PATH = '/pub/firefox/releases/'
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NORMAL_REGEX = re.compile(r'^[0-9]+\.[0-9](\.[0-9])?$')
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# BETA_REGEX = re.compile(r'.*[0-9]b([0-9\-a-z]+)$')
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# ESR_REGEX = re.compile(r'^[0-9]+\.[0-9](\.[0-9])?esr$')
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#
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useragents = {
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# fmt: off
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"versions": (),
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"os": ('Windows NT 10.0; Win64; x64',
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'X11; Linux x86_64'),
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"ua": "Mozilla/5.0 ({os}; rv:{version}) Gecko/20100101 Firefox/{version}",
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# fmt: on
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}
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def fetch_firefox_versions():
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resp = requests.get(URL, timeout=2.0)
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if resp.status_code != 200:
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raise Exception("Error fetching firefox versions, HTTP code " + resp.status_code)
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dom = html.fromstring(resp.text)
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versions = []
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for link in dom.xpath('//a/@href'):
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url = urlparse(urljoin(URL, link))
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path = url.path
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if path.startswith(RELEASE_PATH):
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version = path[len(RELEASE_PATH) : -1]
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if NORMAL_REGEX.match(version):
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versions.append(LooseVersion(version))
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list.sort(versions, reverse=True)
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return versions
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def fetch_firefox_last_versions():
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versions = fetch_firefox_versions()
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result = []
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major_last = versions[0].version[0]
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major_list = (major_last, major_last - 1)
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for version in versions:
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major_current = version.version[0]
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minor_current = version.version[1]
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if major_current in major_list:
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user_agent_version = f'{major_current}.{minor_current}'
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if user_agent_version not in result:
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result.append(user_agent_version)
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return result
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def get_useragents_filename():
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return join(join(searx_dir, "data"), "useragents.json")
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if __name__ == '__main__':
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useragents["versions"] = fetch_firefox_last_versions()
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with open(get_useragents_filename(), "w", encoding='utf-8') as f:
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json.dump(useragents, f, indent=4, ensure_ascii=False)
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