whoogle-search/app/routes.py
Ben Busby ae05e8ff8b Finished basic implementation of DDG bang feature
Initialization of the app now includes generation of a ddg-bang json
file, which is used for all bang style searches afterwards.

Also added search suggestion handling for bang json lookup. Queries
beginning with "!" now reference the bang json file to pull all keys
that match.

Updated test suite to include basic tests for bang functionality.

Updated gitignore to exclude bang subdir.
2020-10-10 15:55:14 -04:00

297 lines
10 KiB
Python

import argparse
import base64
import io
import json
import os
import pickle
import urllib.parse as urlparse
import uuid
from functools import wraps
import waitress
from flask import jsonify, make_response, request, redirect, render_template, send_file, session
from requests import exceptions
from app import app
from app.models.config import Config
from app.request import Request
from app.utils.session_utils import valid_user_session
from app.utils.routing_utils import *
# Load DDG bang json files only on init
bang_json = json.load(open(app.config['BANG_FILE']))
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
@app.before_request
def before_request_func():
g.request_params = request.args if request.method == 'GET' else request.form
g.cookies_disabled = False
# Generate session values for user if unavailable
if not valid_user_session(session):
session['config'] = json.load(open(app.config['DEFAULT_CONFIG'])) \
if os.path.exists(app.config['DEFAULT_CONFIG']) else {'url': request.url_root}
session['uuid'] = str(uuid.uuid4())
session['fernet_keys'] = generate_user_keys(True)
# Flag cookies as possibly disabled in order to prevent against
# unnecessary session directory expansion
g.cookies_disabled = True
if session['uuid'] not in app.user_elements:
app.user_elements.update({session['uuid']: 0})
# Always redirect to https if HTTPS_ONLY is set (otherwise default to False)
https_only = os.getenv('HTTPS_ONLY', False)
if https_only and request.url.startswith('http://'):
return redirect(request.url.replace('http://', 'https://', 1), code=308)
g.user_config = Config(**session['config'])
if not g.user_config.url:
g.user_config.url = request.url_root.replace('http://', 'https://') if https_only else request.url_root
g.user_request = Request(request.headers.get('User-Agent'), language=g.user_config.lang_search)
g.app_location = g.user_config.url
@app.after_request
def after_request_func(response):
if app.user_elements[session['uuid']] <= 0 and '/element' in request.url:
# Regenerate element key if all elements have been served to user
session['fernet_keys']['element_key'] = '' if not g.cookies_disabled else app.default_key_set['element_key']
app.user_elements[session['uuid']] = 0
# Check if address consistently has cookies blocked, in which case start removing session
# files after creation.
# Note: This is primarily done to prevent overpopulation of session directories, since browsers that
# block cookies will still trigger Flask's session creation routine with every request.
if g.cookies_disabled and request.remote_addr not in app.no_cookie_ips:
app.no_cookie_ips.append(request.remote_addr)
elif g.cookies_disabled and request.remote_addr in app.no_cookie_ips:
session_list = list(session.keys())
for key in session_list:
session.pop(key)
return response
@app.errorhandler(404)
def unknown_page(e):
return redirect(g.app_location)
@app.route('/', methods=['GET'])
@auth_required
def index():
# Reset keys
session['fernet_keys'] = generate_user_keys(g.cookies_disabled)
return render_template('index.html',
languages=Config.LANGUAGES,
countries=Config.COUNTRIES,
config=g.user_config,
version_number=app.config['VERSION_NUMBER'])
@app.route('/opensearch.xml', methods=['GET'])
@auth_required
def opensearch():
opensearch_url = g.app_location
if opensearch_url.endswith('/'):
opensearch_url = opensearch_url[:-1]
return render_template(
'opensearch.xml',
main_url=opensearch_url,
request_type='' if g.user_config.get_only else 'method="post"'
), 200, {'Content-Disposition': 'attachment; filename="opensearch.xml"'}
@app.route('/autocomplete', methods=['GET', 'POST'])
def autocomplete():
q = g.request_params.get('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 jsonify([q, g.user_request.autocomplete(q)])
@app.route('/search', methods=['GET', 'POST'])
@auth_required
def search():
# Reset element counter
app.user_elements[session['uuid']] = 0
search_util = RoutingUtils(request, g.user_config, session, cookies_disabled=g.cookies_disabled)
query = search_util.new_search_query()
resolved_bangs = search_util.bang_operator(bang_json)
if resolved_bangs != '':
return redirect(resolved_bangs)
# Redirect to home if invalid/blank search
if not query:
return redirect('/')
# Generate response and number of external elements from the page
response, elements = search_util.generate_response()
if search_util.feeling_lucky:
return redirect(response, code=303)
# Keep count of external elements to fetch before element key can be regenerated
app.user_elements[session['uuid']] = elements
return render_template(
'display.html',
query=urlparse.unquote(query),
search_type=search_util.search_type,
dark_mode=g.user_config.dark,
response=response,
version_number=app.config['VERSION_NUMBER'],
search_header=render_template(
'header.html',
dark_mode=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 '')
@app.route('/config', methods=['GET', 'POST', 'PUT'])
@auth_required
def config():
if request.method == 'GET':
return json.dumps(g.user_config.__dict__)
elif request.method == 'PUT':
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({})
else:
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'))
# Overwrite default config if user has cookies disabled
if g.cookies_disabled:
open(app.config['DEFAULT_CONFIG'], 'w').write(json.dumps(config_data, indent=4))
session['config'] = config_data
return redirect(config_data['url'])
@app.route('/url', methods=['GET'])
@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', query=q)
@app.route('/imgres')
@auth_required
def imgres():
return redirect(request.args.get('imgurl'))
@app.route('/element')
@auth_required
def element():
cipher_suite = Fernet(session['fernet_keys']['element_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
app.user_elements[session['uuid']] -= 1
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('/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 = BeautifulSoup(get_body, 'html.parser')
try:
for script in results('script'):
script.decompose()
except Exception:
pass
return render_template('display.html', response=results)
def run_app():
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)')
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]
os.environ['HTTPS_ONLY'] = '1' if args.https_only else ''
if args.debug:
app.run(host=args.host, port=args.port, debug=args.debug)
else:
waitress.serve(app, listen="{}:{}".format(args.host, args.port))