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#!/usr/bin/env python
# lint: pylint
# SPDX-License-Identifier: AGPL-3.0-or-later
"""Fetch firefox useragent signatures
Output file: :origin:`searx/data/useragents.json` (:origin:`CI Update data ...
<.github/workflows/data-update.yml>`).
"""
# pylint: disable=use-dict-literal
import json
import re
from os.path import join
from urllib.parse import urlparse, urljoin
from packaging.version import parse
import requests
from lxml import html
from searx import searx_dir
URL = 'https://ftp.mozilla.org/pub/firefox/releases/'
RELEASE_PATH = '/pub/firefox/releases/'
NORMAL_REGEX = re.compile(r'^[0-9]+\.[0-9](\.[0-9])?$')
# BETA_REGEX = re.compile(r'.*[0-9]b([0-9\-a-z]+)$')
# ESR_REGEX = re.compile(r'^[0-9]+\.[0-9](\.[0-9])?esr$')
#
useragents = {
# fmt: off
"versions": (),
"os": ('Windows NT 10.0; Win64; x64',
'X11; Linux x86_64'),
"ua": "Mozilla/5.0 ({os}; rv:109.0) Gecko/20100101 Firefox/{version}",
# fmt: on
}
def fetch_firefox_versions():
resp = requests.get(URL, timeout=2.0)
if resp.status_code != 200:
# pylint: disable=broad-exception-raised
raise Exception("Error fetching firefox versions, HTTP code " + resp.status_code)
dom = html.fromstring(resp.text)
versions = []
for link in dom.xpath('//a/@href'):
url = urlparse(urljoin(URL, link))
path = url.path
if path.startswith(RELEASE_PATH):
version = path[len(RELEASE_PATH) : -1]
if NORMAL_REGEX.match(version):
versions.append(parse(version))
list.sort(versions, reverse=True)
return versions
def fetch_firefox_last_versions():
versions = fetch_firefox_versions()
result = []
major_last = versions[0].major
major_list = (major_last, major_last - 1)
for version in versions:
msg = (
"Please check if the rv segment of the user agent is still frozen at 109.0: "
"https://bugzilla.mozilla.org/show_bug.cgi?id=1805967"
)
assert version.major != 120, msg
major_current = version.major
minor_current = version.minor
if major_current in major_list:
user_agent_version = f'{major_current}.{minor_current}'
if user_agent_version not in result:
result.append(user_agent_version)
return result
def get_useragents_filename():
return join(join(searx_dir, "data"), "useragents.json")
if __name__ == '__main__':
useragents["versions"] = fetch_firefox_last_versions()
with open(get_useragents_filename(), "w", encoding='utf-8') as f:
json.dump(useragents, f, indent=4, ensure_ascii=False)
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