43faaee77f
The new site filter breaks links to Maps results, so filter.py needed to be updated to handle these links as a unique case. A new method was introduced to easily remove any "-site:..." filters from the query, which is now also used to format queries in the header template rather than manually removing the blocked site list within the template itself. Bumps version to 0.5.1 for releasing the bugfix Fixes #329
270 lines
9.5 KiB
Python
270 lines
9.5 KiB
Python
from app.models.config import Config
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from datetime import datetime
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import xml.etree.ElementTree as ET
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import random
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import requests
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from requests import Response, ConnectionError
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import urllib.parse as urlparse
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import os
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from stem import Signal, SocketError
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from stem.control import Controller
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SEARCH_URL = 'https://www.google.com/search?gbv=1&q='
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MAPS_URL = 'https://maps.google.com/maps'
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AUTOCOMPLETE_URL = ('https://suggestqueries.google.com/'
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'complete/search?client=toolbar&')
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MOBILE_UA = '{}/5.0 (Android 0; Mobile; rv:54.0) Gecko/54.0 {}/59.0'
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DESKTOP_UA = '{}/5.0 (X11; {} x86_64; rv:75.0) Gecko/20100101 {}/75.0'
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# Valid query params
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VALID_PARAMS = ['tbs', 'tbm', 'start', 'near', 'source', 'nfpr']
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class TorError(Exception):
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"""Exception raised for errors in Tor requests.
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Attributes:
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message: a message describing the error that occurred
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disable: optionally disables Tor in the user config (note:
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this should only happen if the connection has been dropped
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altogether).
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"""
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def __init__(self, message, disable=False) -> None:
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self.message = message
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self.disable = disable
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super().__init__(message)
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def send_tor_signal(signal: Signal) -> bool:
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try:
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with Controller.from_port(port=9051) as c:
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c.authenticate()
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c.signal(signal)
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os.environ['TOR_AVAILABLE'] = '1'
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return True
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except (SocketError, ConnectionRefusedError, ConnectionError):
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os.environ['TOR_AVAILABLE'] = '0'
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return False
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def gen_user_agent(is_mobile) -> str:
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firefox = random.choice(['Choir', 'Squier', 'Higher', 'Wire']) + 'fox'
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linux = random.choice(['Win', 'Sin', 'Gin', 'Fin', 'Kin']) + 'ux'
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if is_mobile:
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return MOBILE_UA.format("Mozilla", firefox)
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return DESKTOP_UA.format("Mozilla", linux, firefox)
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def gen_query(query, args, config, near_city=None) -> str:
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param_dict = {key: '' for key in VALID_PARAMS}
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# Use :past(hour/day/week/month/year) if available
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# example search "new restaurants :past month"
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lang = ''
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if ':past' in query and 'tbs' not in args:
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time_range = str.strip(query.split(':past', 1)[-1])
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param_dict['tbs'] = '&tbs=' + ('qdr:' + str.lower(time_range[0]))
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elif 'tbs' in args:
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result_tbs = args.get('tbs')
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param_dict['tbs'] = '&tbs=' + result_tbs
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# Occasionally the 'tbs' param provided by google also contains a
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# field for 'lr', but formatted strangely. This is a rough solution
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# for this.
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#
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# Example:
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# &tbs=qdr:h,lr:lang_1pl
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# -- the lr param needs to be extracted and remove the leading '1'
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result_params = [_ for _ in result_tbs.split(',') if 'lr:' in _]
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if len(result_params) > 0:
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result_param = result_params[0]
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lang = result_param[result_param.find('lr:') + 3:len(result_param)]
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# Ensure search query is parsable
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query = urlparse.quote(query)
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# Pass along type of results (news, images, books, etc)
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if 'tbm' in args:
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param_dict['tbm'] = '&tbm=' + args.get('tbm')
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# Get results page start value (10 per page, ie page 2 start val = 20)
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if 'start' in args:
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param_dict['start'] = '&start=' + args.get('start')
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# Search for results near a particular city, if available
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if near_city:
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param_dict['near'] = '&near=' + urlparse.quote(near_city)
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# Set language for results (lr) if source isn't set, otherwise use the
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# result language param provided in the results
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if 'source' in args:
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param_dict['source'] = '&source=' + args.get('source')
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param_dict['lr'] = ('&lr=' + ''.join(
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[_ for _ in lang if not _.isdigit()]
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)) if lang else ''
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else:
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param_dict['lr'] = (
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'&lr=' + config.lang_search
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) if config.lang_search else ''
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# 'nfpr' defines the exclusion of results from an auto-corrected query
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if 'nfpr' in args:
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param_dict['nfpr'] = '&nfpr=' + args.get('nfpr')
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param_dict['cr'] = ('&cr=' + config.ctry) if config.ctry else ''
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param_dict['hl'] = (
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'&hl=' + config.lang_interface.replace('lang_', '')
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) if config.lang_interface else ''
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param_dict['safe'] = '&safe=' + ('active' if config.safe else 'off')
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# Block all sites specified in the user config
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for blocked in config.block.split(','):
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query += (' -site:' + blocked) if blocked else ''
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for val in param_dict.values():
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if not val:
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continue
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query += val
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return query
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class Request:
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"""Class used for handling all outbound requests, including search queries,
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search suggestions, and loading of external content (images, audio, etc).
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Attributes:
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normal_ua: the user's current user agent
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root_path: the root path of the whoogle instance
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config: the user's current whoogle configuration
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"""
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def __init__(self, normal_ua, root_path, config: Config):
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# Send heartbeat to Tor, used in determining if the user can or cannot
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# enable Tor for future requests
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send_tor_signal(Signal.HEARTBEAT)
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self.language = config.lang_search
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self.mobile = 'Android' in normal_ua or 'iPhone' in normal_ua
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self.modified_user_agent = gen_user_agent(self.mobile)
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if not self.mobile:
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self.modified_user_agent_mobile = gen_user_agent(True)
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# Set up proxy, if previously configured
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if os.environ.get('WHOOGLE_PROXY_LOC'):
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auth_str = ''
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if os.environ.get('WHOOGLE_PROXY_USER', ''):
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auth_str = os.environ.get('WHOOGLE_PROXY_USER', '') + \
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':' + os.environ.get('WHOOGLE_PROXY_PASS', '')
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self.proxies = {
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'http': os.environ.get('WHOOGLE_PROXY_TYPE', '') + '://' +
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auth_str + '@' + os.environ.get('WHOOGLE_PROXY_LOC', ''),
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}
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self.proxies['https'] = self.proxies['http'].replace('http',
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'https')
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else:
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self.proxies = {
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'http': 'socks5://127.0.0.1:9050',
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'https': 'socks5://127.0.0.1:9050'
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} if config.tor else {}
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self.tor = config.tor
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self.tor_valid = False
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self.root_path = root_path
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def __getitem__(self, name):
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return getattr(self, name)
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def autocomplete(self, query) -> list:
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"""Sends a query to Google's search suggestion service
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Args:
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query: The in-progress query to send
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Returns:
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list: The list of matches for possible search suggestions
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"""
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ac_query = dict(hl=self.language, q=query)
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response = self.send(base_url=AUTOCOMPLETE_URL,
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query=urlparse.urlencode(ac_query)).text
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if not response:
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return []
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root = ET.fromstring(response)
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return [_.attrib['data'] for _ in
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root.findall('.//suggestion/[@data]')]
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def send(self, base_url=SEARCH_URL, query='', attempt=0,
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force_mobile=False) -> Response:
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"""Sends an outbound request to a URL. Optionally sends the request
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using Tor, if enabled by the user.
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Args:
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base_url: The URL to use in the request
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query: The optional query string for the request
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attempt: The number of attempts made for the request
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(used for cycling through Tor identities, if enabled)
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Returns:
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Response: The Response object returned by the requests call
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"""
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if force_mobile and not self.mobile:
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modified_user_agent = self.modified_user_agent_mobile
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else:
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modified_user_agent = self.modified_user_agent
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headers = {
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'User-Agent': modified_user_agent
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}
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# FIXME: Should investigate this further to ensure the consent
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# view is suppressed correctly
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now = datetime.now()
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cookies = {
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'CONSENT': 'YES+cb.{:d}{:02d}{:02d}-17-p0.de+F+678'.format(
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now.year, now.month, now.day
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)
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}
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# Validate Tor conn and request new identity if the last one failed
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if self.tor and not send_tor_signal(
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Signal.NEWNYM if attempt > 0 else Signal.HEARTBEAT):
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raise TorError(
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"Tor was previously enabled, but the connection has been "
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"dropped. Please check your Tor configuration and try again.",
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disable=True)
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# Make sure that the tor connection is valid, if enabled
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if self.tor:
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tor_check = requests.get('https://check.torproject.org/',
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proxies=self.proxies, headers=headers)
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self.tor_valid = 'Congratulations' in tor_check.text
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if not self.tor_valid:
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raise TorError(
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"Tor connection succeeded, but the connection could not "
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"be validated by torproject.org",
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disable=True)
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response = requests.get(
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base_url + query,
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proxies=self.proxies,
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headers=headers,
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cookies=cookies)
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# Retry query with new identity if using Tor (max 10 attempts)
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if 'form id="captcha-form"' in response.text and self.tor:
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attempt += 1
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if attempt > 10:
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raise TorError("Tor query failed -- max attempts exceeded 10")
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return self.send(base_url, query, attempt)
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return response
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