whoogle-search/app/routes.py

522 lines
18 KiB
Python

import argparse
import base64
import io
import json
import pickle
import urllib.parse as urlparse
import uuid
from datetime import timedelta
from functools import wraps
import waitress
from app import app
from app.models.config import Config
from app.models.endpoint import Endpoint
from app.request import Request, TorError
from app.utils.bangs import resolve_bang
from app.utils.misc import read_config_bool, get_client_ip
from app.utils.results import add_ip_card
from app.utils.results import bold_search_terms
from app.utils.search import *
from app.utils.session import generate_user_key, valid_user_session
from bs4 import BeautifulSoup as bsoup
from flask import jsonify, make_response, request, redirect, render_template, \
send_file, session, url_for
from requests import exceptions, get
from requests.models import PreparedRequest
# Load DDG bang json files only on init
bang_json = json.load(open(app.config['BANG_FILE']))
# Check the newest version of WHOOGLE
update = bsoup(get(app.config['RELEASES_URL']).text, 'html.parser')
newest_version = update.select_one('[class="Link--primary"]').string[1:]
current_version = int(''.join(filter(str.isdigit,
app.config['VERSION_NUMBER'])))
newest_version = int(''.join(filter(str.isdigit, newest_version)))
newest_version = '' if current_version >= newest_version \
else newest_version
def auth_required(f):
@wraps(f)
def decorated(*args, **kwargs):
auth = request.authorization
# Skip if username/password not set
whoogle_user = os.getenv('WHOOGLE_USER', '')
whoogle_pass = os.getenv('WHOOGLE_PASS', '')
if (not whoogle_user or not whoogle_pass) or (
auth
and whoogle_user == auth.username
and whoogle_pass == auth.password):
return f(*args, **kwargs)
else:
return make_response('Not logged in', 401, {
'WWW-Authenticate': 'Basic realm="Login Required"'})
return decorated
def session_required(f):
@wraps(f)
def decorated(*args, **kwargs):
if (valid_user_session(session) and
'cookies_disabled' not in request.args):
g.session_key = session['key']
else:
session.pop('_permanent', None)
g.session_key = app.default_key
# Clear out old sessions
invalid_sessions = []
for user_session in os.listdir(app.config['SESSION_FILE_DIR']):
session_path = os.path.join(
app.config['SESSION_FILE_DIR'],
user_session)
try:
with open(session_path, 'rb') as session_file:
_ = pickle.load(session_file)
data = pickle.load(session_file)
if isinstance(data, dict) and 'valid' in data:
continue
invalid_sessions.append(session_path)
except (EOFError, FileNotFoundError):
pass
for invalid_session in invalid_sessions:
os.remove(invalid_session)
return f(*args, **kwargs)
return decorated
@app.before_request
def before_request_func():
g.request_params = (
request.args if request.method == 'GET' else request.form
)
# Skip pre-request actions if verifying session
if '/session' in request.path and not valid_user_session(session):
return
default_config = json.load(open(app.config['DEFAULT_CONFIG'])) \
if os.path.exists(app.config['DEFAULT_CONFIG']) else {}
# Generate session values for user if unavailable
if (not valid_user_session(session) and
'cookies_disabled' not in request.args):
session['config'] = default_config
session['uuid'] = str(uuid.uuid4())
session['key'] = generate_user_key()
# Skip checking for session on /autocomplete searches,
# since they can be done from the browser search bar (aka
# no ability to initialize a session)
if not Endpoint.autocomplete.in_path(request.path):
return redirect(url_for(
'session_check',
session_id=session['uuid'],
follow=request.url), code=307)
else:
g.user_config = Config(**session['config'])
elif 'cookies_disabled' not in request.args:
# Set session as permanent
session.permanent = True
app.permanent_session_lifetime = timedelta(days=365)
g.user_config = Config(**session['config'])
else:
# User has cookies disabled, fall back to immutable default config
session.pop('_permanent', None)
g.user_config = Config(**default_config)
if not g.user_config.url:
g.user_config.url = request.url_root.replace(
'http://',
'https://') if os.getenv('HTTPS_ONLY', False) else request.url_root
g.user_request = Request(
request.headers.get('User-Agent'),
request.url_root,
config=g.user_config)
g.app_location = g.user_config.url
@app.after_request
def after_request_func(resp):
resp.headers['Content-Security-Policy'] = app.config['CSP']
if os.environ.get('HTTPS_ONLY', False):
resp.headers['Content-Security-Policy'] += 'upgrade-insecure-requests'
return resp
@app.errorhandler(404)
def unknown_page(e):
app.logger.warn(e)
return redirect(g.app_location)
@app.route(f'/{Endpoint.healthz}', methods=['GET'])
def healthz():
return ''
@app.route(f'/{Endpoint.session}/<session_id>', methods=['GET', 'PUT', 'POST'])
def session_check(session_id):
if 'uuid' in session and session['uuid'] == session_id:
session['valid'] = True
return redirect(request.args.get('follow'), code=307)
else:
follow_url = request.args.get('follow')
req = PreparedRequest()
req.prepare_url(follow_url, {'cookies_disabled': 1})
session.pop('_permanent', None)
return redirect(req.url, code=307)
@app.route('/', methods=['GET'])
@app.route(f'/{Endpoint.home}', methods=['GET'])
@auth_required
def index():
# Redirect if an error was raised
if 'error_message' in session and session['error_message']:
error_message = session['error_message']
session['error_message'] = ''
return render_template('error.html', error_message=error_message)
return render_template('index.html',
newest_version=newest_version,
languages=app.config['LANGUAGES'],
countries=app.config['COUNTRIES'],
themes=app.config['THEMES'],
translation=app.config['TRANSLATIONS'][
g.user_config.get_localization_lang()
],
logo=render_template(
'logo.html',
dark=g.user_config.dark),
config_disabled=(
app.config['CONFIG_DISABLE'] or
not valid_user_session(session) or
'cookies_disabled' in request.args),
config=g.user_config,
tor_available=int(os.environ.get('TOR_AVAILABLE')),
version_number=app.config['VERSION_NUMBER'])
@app.route(f'/{Endpoint.opensearch}', methods=['GET'])
def opensearch():
opensearch_url = g.app_location
if opensearch_url.endswith('/'):
opensearch_url = opensearch_url[:-1]
# Enforce https for opensearch template
if needs_https(opensearch_url):
opensearch_url = opensearch_url.replace('http://', 'https://', 1)
get_only = g.user_config.get_only or 'Chrome' in request.headers.get(
'User-Agent')
return render_template(
'opensearch.xml',
main_url=opensearch_url,
request_type='' if get_only else 'method="post"'
), 200, {'Content-Disposition': 'attachment; filename="opensearch.xml"'}
@app.route(f'/{Endpoint.search_html}', methods=['GET'])
def search_html():
search_url = g.app_location
if search_url.endswith('/'):
search_url = search_url[:-1]
return render_template('search.html', url=search_url)
@app.route(f'/{Endpoint.autocomplete}', methods=['GET', 'POST'])
def autocomplete():
ac_var = 'WHOOGLE_AUTOCOMPLETE'
if os.getenv(ac_var) and not read_config_bool(ac_var):
return jsonify({})
q = g.request_params.get('q')
if not q:
# FF will occasionally (incorrectly) send the q field without a
# mimetype in the format "b'q=<query>'" through the request.data field
q = str(request.data).replace('q=', '')
# Search bangs if the query begins with "!", but not "! " (feeling lucky)
if q.startswith('!') and len(q) > 1 and not q.startswith('! '):
return jsonify([q, [bang_json[_]['suggestion'] for _ in bang_json if
_.startswith(q)]])
if not q and not request.data:
return jsonify({'?': []})
elif request.data:
q = urlparse.unquote_plus(
request.data.decode('utf-8').replace('q=', ''))
# Return a list of suggestions for the query
#
# Note: If Tor is enabled, this returns nothing, as the request is
# almost always rejected
return jsonify([
q,
g.user_request.autocomplete(q) if not g.user_config.tor else []
])
@app.route(f'/{Endpoint.search}', methods=['GET', 'POST'])
@session_required
@auth_required
def search():
# Update user config if specified in search args
g.user_config = g.user_config.from_params(g.request_params)
search_util = Search(request, g.user_config, g.session_key)
query = search_util.new_search_query()
bang = resolve_bang(query=query, bangs_dict=bang_json)
if bang != '':
return redirect(bang)
# Redirect to home if invalid/blank search
if not query:
return redirect(url_for('.index'))
# Generate response and number of external elements from the page
try:
response = search_util.generate_response()
except TorError as e:
session['error_message'] = e.message + (
"\\n\\nTor config is now disabled!" if e.disable else "")
session['config']['tor'] = False if e.disable else session['config'][
'tor']
return redirect(url_for('.index'))
if search_util.feeling_lucky:
return redirect(response, code=303)
# If the user is attempting to translate a string, determine the correct
# string for formatting the lingva.ml url
localization_lang = g.user_config.get_localization_lang()
translation = app.config['TRANSLATIONS'][localization_lang]
translate_to = localization_lang.replace('lang_', '')
# Return 503 if temporarily blocked by captcha
resp_code = 503 if has_captcha(str(response)) else 200
response = bold_search_terms(response, query)
# Feature to display IP address
if search_util.check_kw_ip():
html_soup = bsoup(str(response), 'html.parser')
response = add_ip_card(html_soup, get_client_ip(request))
return render_template(
'display.html',
newest_version=newest_version,
query=urlparse.unquote(query),
search_type=search_util.search_type,
config=g.user_config,
lingva_url=app.config['TRANSLATE_URL'],
translation=translation,
translate_to=translate_to,
translate_str=query.replace(
'translate', ''
).replace(
translation['translate'], ''
),
is_translation=any(
_ in query.lower() for _ in [translation['translate'], 'translate']
) and not search_util.search_type, # Standard search queries only
response=response,
version_number=app.config['VERSION_NUMBER'],
search_header=(render_template(
'header.html',
config=g.user_config,
logo=render_template('logo.html', dark=g.user_config.dark),
query=urlparse.unquote(query),
search_type=search_util.search_type,
mobile=g.user_request.mobile)
if 'isch' not in
search_util.search_type else '')), resp_code
@app.route(f'/{Endpoint.config}', methods=['GET', 'POST', 'PUT'])
@session_required
@auth_required
def config():
config_disabled = (
app.config['CONFIG_DISABLE'] or
not valid_user_session(session))
if request.method == 'GET':
return json.dumps(g.user_config.__dict__)
elif request.method == 'PUT' and not config_disabled:
if 'name' in request.args:
config_pkl = os.path.join(
app.config['CONFIG_PATH'],
request.args.get('name'))
session['config'] = (pickle.load(open(config_pkl, 'rb'))
if os.path.exists(config_pkl)
else session['config'])
return json.dumps(session['config'])
else:
return json.dumps({})
elif not config_disabled:
config_data = request.form.to_dict()
if 'url' not in config_data or not config_data['url']:
config_data['url'] = g.user_config.url
# Save config by name to allow a user to easily load later
if 'name' in request.args:
pickle.dump(
config_data,
open(os.path.join(
app.config['CONFIG_PATH'],
request.args.get('name')), 'wb'))
session['config'] = config_data
return redirect(config_data['url'])
else:
return redirect(url_for('.index'), code=403)
@app.route(f'/{Endpoint.url}', methods=['GET'])
@session_required
@auth_required
def url():
if 'url' in request.args:
return redirect(request.args.get('url'))
q = request.args.get('q')
if len(q) > 0 and 'http' in q:
return redirect(q)
else:
return render_template(
'error.html',
error_message='Unable to resolve query: ' + q)
@app.route(f'/{Endpoint.imgres}')
@session_required
@auth_required
def imgres():
return redirect(request.args.get('imgurl'))
@app.route(f'/{Endpoint.element}')
@session_required
@auth_required
def element():
cipher_suite = Fernet(g.session_key)
src_url = cipher_suite.decrypt(request.args.get('url').encode()).decode()
src_type = request.args.get('type')
try:
file_data = g.user_request.send(base_url=src_url).content
tmp_mem = io.BytesIO()
tmp_mem.write(file_data)
tmp_mem.seek(0)
return send_file(tmp_mem, mimetype=src_type)
except exceptions.RequestException:
pass
empty_gif = base64.b64decode(
'R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==')
return send_file(io.BytesIO(empty_gif), mimetype='image/gif')
@app.route(f'/{Endpoint.window}')
@auth_required
def window():
get_body = g.user_request.send(base_url=request.args.get('location')).text
get_body = get_body.replace('src="/',
'src="' + request.args.get('location') + '"')
get_body = get_body.replace('href="/',
'href="' + request.args.get('location') + '"')
results = bsoup(get_body, 'html.parser')
for script in results('script'):
script.decompose()
return render_template(
'display.html',
response=results,
translation=app.config['TRANSLATIONS'][
g.user_config.get_localization_lang()
]
)
def run_app() -> None:
parser = argparse.ArgumentParser(
description='Whoogle Search console runner')
parser.add_argument(
'--port',
default=5000,
metavar='<port number>',
help='Specifies a port to run on (default 5000)')
parser.add_argument(
'--host',
default='127.0.0.1',
metavar='<ip address>',
help='Specifies the host address to use (default 127.0.0.1)')
parser.add_argument(
'--debug',
default=False,
action='store_true',
help='Activates debug mode for the server (default False)')
parser.add_argument(
'--https-only',
default=False,
action='store_true',
help='Enforces HTTPS redirects for all requests')
parser.add_argument(
'--userpass',
default='',
metavar='<username:password>',
help='Sets a username/password basic auth combo (default None)')
parser.add_argument(
'--proxyauth',
default='',
metavar='<username:password>',
help='Sets a username/password for a HTTP/SOCKS proxy (default None)')
parser.add_argument(
'--proxytype',
default='',
metavar='<socks4|socks5|http>',
help='Sets a proxy type for all connections (default None)')
parser.add_argument(
'--proxyloc',
default='',
metavar='<location:port>',
help='Sets a proxy location for all connections (default None)')
args = parser.parse_args()
if args.userpass:
user_pass = args.userpass.split(':')
os.environ['WHOOGLE_USER'] = user_pass[0]
os.environ['WHOOGLE_PASS'] = user_pass[1]
if args.proxytype and args.proxyloc:
if args.proxyauth:
proxy_user_pass = args.proxyauth.split(':')
os.environ['WHOOGLE_PROXY_USER'] = proxy_user_pass[0]
os.environ['WHOOGLE_PROXY_PASS'] = proxy_user_pass[1]
os.environ['WHOOGLE_PROXY_TYPE'] = args.proxytype
os.environ['WHOOGLE_PROXY_LOC'] = args.proxyloc
if args.https_only:
os.environ['HTTPS_ONLY'] = '1'
if args.debug:
app.run(host=args.host, port=args.port, debug=args.debug)
else:
waitress.serve(app, listen="{}:{}".format(args.host, args.port))