mirror of
https://github.com/benbusby/whoogle-search
synced 2024-11-18 09:25:33 +00:00
2950aa869b
This should fix the annoyance with browsers like Firefox not caching POST request responses. By redirecting a POST search to be a GET request instead (with an encrypted query string), the page can be cached and successfully navigated back to after visiting a result.
686 lines
24 KiB
Python
686 lines
24 KiB
Python
import argparse
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import base64
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import io
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import json
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import os
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import pickle
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import re
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import urllib.parse as urlparse
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import uuid
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import validators
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from datetime import datetime, timedelta
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from functools import wraps
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import waitress
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from app import app
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from app.models.config import Config
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from app.models.endpoint import Endpoint
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from app.request import Request, TorError
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from app.utils.bangs import resolve_bang
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from app.utils.misc import empty_gif, placeholder_img, get_proxy_host_url, \
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fetch_favicon
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from app.filter import Filter
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from app.utils.misc import read_config_bool, get_client_ip, get_request_url, \
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check_for_update, encrypt_string
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from app.utils.widgets import *
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from app.utils.results import bold_search_terms,\
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add_currency_card, check_currency, get_tabs_content
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from app.utils.search import Search, needs_https, has_captcha
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from app.utils.session import valid_user_session
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from bs4 import BeautifulSoup as bsoup
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from flask import jsonify, make_response, request, redirect, render_template, \
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send_file, session, url_for, g
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from requests import exceptions
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from requests.models import PreparedRequest
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from cryptography.fernet import Fernet, InvalidToken
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from cryptography.exceptions import InvalidSignature
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from werkzeug.datastructures import MultiDict
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# Load DDG bang json files only on init
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bang_json = json.load(open(app.config['BANG_FILE'])) or {}
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ac_var = 'WHOOGLE_AUTOCOMPLETE'
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autocomplete_enabled = os.getenv(ac_var, '1')
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def get_search_name(tbm):
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for tab in app.config['HEADER_TABS'].values():
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if tab['tbm'] == tbm:
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return tab['name']
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def auth_required(f):
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@wraps(f)
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def decorated(*args, **kwargs):
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# do not ask password if cookies already present
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if (
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valid_user_session(session)
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and 'cookies_disabled' not in request.args
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and session['auth']
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):
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return f(*args, **kwargs)
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auth = request.authorization
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# Skip if username/password not set
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whoogle_user = os.getenv('WHOOGLE_USER', '')
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whoogle_pass = os.getenv('WHOOGLE_PASS', '')
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if (not whoogle_user or not whoogle_pass) or (
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auth
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and whoogle_user == auth.username
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and whoogle_pass == auth.password):
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session['auth'] = True
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return f(*args, **kwargs)
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else:
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return make_response('Not logged in', 401, {
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'WWW-Authenticate': 'Basic realm="Login Required"'})
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return decorated
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def session_required(f):
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@wraps(f)
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def decorated(*args, **kwargs):
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if not valid_user_session(session):
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session.pop('_permanent', None)
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# Note: This sets all requests to use the encryption key determined per
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# instance on app init. This can be updated in the future to use a key
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# that is unique for their session (session['key']) but this should use
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# a config setting to enable the session based key. Otherwise there can
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# be problems with searches performed by users with cookies blocked if
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# a session based key is always used.
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g.session_key = app.enc_key
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# Clear out old sessions
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invalid_sessions = []
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for user_session in os.listdir(app.config['SESSION_FILE_DIR']):
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file_path = os.path.join(
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app.config['SESSION_FILE_DIR'],
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user_session)
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try:
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# Ignore files that are larger than the max session file size
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if os.path.getsize(file_path) > app.config['MAX_SESSION_SIZE']:
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continue
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with open(file_path, 'rb') as session_file:
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_ = pickle.load(session_file)
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data = pickle.load(session_file)
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if isinstance(data, dict) and 'valid' in data:
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continue
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invalid_sessions.append(file_path)
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except Exception:
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# Broad exception handling here due to how instances installed
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# with pip seem to have issues storing unrelated files in the
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# same directory as sessions
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pass
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for invalid_session in invalid_sessions:
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try:
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os.remove(invalid_session)
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except FileNotFoundError:
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# Don't throw error if the invalid session has been removed
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pass
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return f(*args, **kwargs)
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return decorated
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@app.before_request
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def before_request_func():
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global bang_json
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session.permanent = True
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# Check for latest version if needed
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now = datetime.now()
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if now - timedelta(hours=24) > app.config['LAST_UPDATE_CHECK']:
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app.config['LAST_UPDATE_CHECK'] = now
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app.config['HAS_UPDATE'] = check_for_update(
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app.config['RELEASES_URL'],
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app.config['VERSION_NUMBER'])
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g.request_params = (
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request.args if request.method == 'GET' else request.form
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)
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default_config = json.load(open(app.config['DEFAULT_CONFIG'])) \
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if os.path.exists(app.config['DEFAULT_CONFIG']) else {}
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# Generate session values for user if unavailable
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if not valid_user_session(session):
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session['config'] = default_config
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session['uuid'] = str(uuid.uuid4())
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session['key'] = app.enc_key
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session['auth'] = False
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# Establish config values per user session
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g.user_config = Config(**session['config'])
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# Update user config if specified in search args
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g.user_config = g.user_config.from_params(g.request_params)
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if not g.user_config.url:
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g.user_config.url = get_request_url(request.url_root)
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g.user_request = Request(
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request.headers.get('User-Agent'),
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get_request_url(request.url_root),
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config=g.user_config)
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g.app_location = g.user_config.url
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# Attempt to reload bangs json if not generated yet
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if not bang_json and os.path.getsize(app.config['BANG_FILE']) > 4:
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try:
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bang_json = json.load(open(app.config['BANG_FILE']))
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except json.decoder.JSONDecodeError:
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# Ignore decoding error, can occur if file is still
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# being written
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pass
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@app.after_request
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def after_request_func(resp):
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resp.headers['X-Content-Type-Options'] = 'nosniff'
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resp.headers['X-Frame-Options'] = 'DENY'
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resp.headers['Cache-Control'] = 'max-age=86400'
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if os.getenv('WHOOGLE_CSP', False):
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resp.headers['Content-Security-Policy'] = app.config['CSP']
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if os.environ.get('HTTPS_ONLY', False):
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resp.headers['Content-Security-Policy'] += \
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'upgrade-insecure-requests'
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return resp
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@app.errorhandler(404)
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def unknown_page(e):
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app.logger.warn(e)
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return redirect(g.app_location)
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@app.route(f'/{Endpoint.healthz}', methods=['GET'])
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def healthz():
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return ''
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@app.route('/', methods=['GET'])
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@app.route(f'/{Endpoint.home}', methods=['GET'])
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@auth_required
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def index():
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# Redirect if an error was raised
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if 'error_message' in session and session['error_message']:
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error_message = session['error_message']
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session['error_message'] = ''
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return render_template('error.html', error_message=error_message)
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return render_template('index.html',
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has_update=app.config['HAS_UPDATE'],
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languages=app.config['LANGUAGES'],
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countries=app.config['COUNTRIES'],
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time_periods=app.config['TIME_PERIODS'],
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themes=app.config['THEMES'],
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autocomplete_enabled=autocomplete_enabled,
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translation=app.config['TRANSLATIONS'][
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g.user_config.get_localization_lang()
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],
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logo=render_template(
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'logo.html',
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dark=g.user_config.dark),
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config_disabled=(
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app.config['CONFIG_DISABLE'] or
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not valid_user_session(session)),
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config=g.user_config,
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tor_available=int(os.environ.get('TOR_AVAILABLE')),
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version_number=app.config['VERSION_NUMBER'])
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@app.route(f'/{Endpoint.opensearch}', methods=['GET'])
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def opensearch():
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opensearch_url = g.app_location
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if opensearch_url.endswith('/'):
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opensearch_url = opensearch_url[:-1]
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# Enforce https for opensearch template
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if needs_https(opensearch_url):
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opensearch_url = opensearch_url.replace('http://', 'https://', 1)
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get_only = g.user_config.get_only or 'Chrome' in request.headers.get(
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'User-Agent')
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return render_template(
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'opensearch.xml',
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main_url=opensearch_url,
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request_type='' if get_only else 'method="post"',
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search_type=request.args.get('tbm'),
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search_name=get_search_name(request.args.get('tbm'))
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), 200, {'Content-Type': 'application/xml'}
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@app.route(f'/{Endpoint.search_html}', methods=['GET'])
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def search_html():
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search_url = g.app_location
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if search_url.endswith('/'):
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search_url = search_url[:-1]
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return render_template('search.html', url=search_url)
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@app.route(f'/{Endpoint.autocomplete}', methods=['GET', 'POST'])
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def autocomplete():
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if os.getenv(ac_var) and not read_config_bool(ac_var):
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return jsonify({})
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q = g.request_params.get('q')
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if not q:
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# FF will occasionally (incorrectly) send the q field without a
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# mimetype in the format "b'q=<query>'" through the request.data field
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q = str(request.data).replace('q=', '')
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# Search bangs if the query begins with "!", but not "! " (feeling lucky)
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if q.startswith('!') and len(q) > 1 and not q.startswith('! '):
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return jsonify([q, [bang_json[_]['suggestion'] for _ in bang_json if
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_.startswith(q)]])
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if not q and not request.data:
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return jsonify({'?': []})
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elif request.data:
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q = urlparse.unquote_plus(
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request.data.decode('utf-8').replace('q=', ''))
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# Return a list of suggestions for the query
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#
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# Note: If Tor is enabled, this returns nothing, as the request is
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# almost always rejected
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return jsonify([
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q,
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g.user_request.autocomplete(q) if not g.user_config.tor else []
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])
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@app.route(f'/{Endpoint.search}', methods=['GET', 'POST'])
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@session_required
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@auth_required
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def search():
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if request.method == 'POST':
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# Redirect as a GET request with an encrypted query
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post_data = MultiDict(request.form)
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post_data['q'] = encrypt_string(g.session_key, post_data['q'])
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get_req_str = urlparse.urlencode(post_data)
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return redirect(url_for('.search') + '?' + get_req_str)
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search_util = Search(request, g.user_config, g.session_key)
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query = search_util.new_search_query()
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bang = resolve_bang(query, bang_json)
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if bang:
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return redirect(bang)
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# Redirect to home if invalid/blank search
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if not query:
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return redirect(url_for('.index'))
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# Generate response and number of external elements from the page
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try:
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response = search_util.generate_response()
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except TorError as e:
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session['error_message'] = e.message + (
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"\\n\\nTor config is now disabled!" if e.disable else "")
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session['config']['tor'] = False if e.disable else session['config'][
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'tor']
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return redirect(url_for('.index'))
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if search_util.feeling_lucky:
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return redirect(response, code=303)
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# If the user is attempting to translate a string, determine the correct
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# string for formatting the lingva.ml url
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localization_lang = g.user_config.get_localization_lang()
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translation = app.config['TRANSLATIONS'][localization_lang]
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translate_to = localization_lang.replace('lang_', '')
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# removing st-card to only use whoogle time selector
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soup = bsoup(response, "html.parser");
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for x in soup.find_all(attrs={"id": "st-card"}):
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x.replace_with("")
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response = str(soup)
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# Return 503 if temporarily blocked by captcha
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if has_captcha(str(response)):
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app.logger.error('503 (CAPTCHA)')
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return render_template(
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'error.html',
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blocked=True,
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error_message=translation['ratelimit'],
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translation=translation,
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farside='https://farside.link',
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config=g.user_config,
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query=urlparse.unquote(query),
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params=g.user_config.to_params(keys=['preferences'])), 503
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response = bold_search_terms(response, query)
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# check for widgets and add if requested
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if search_util.widget != '':
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html_soup = bsoup(str(response), 'html.parser')
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if search_util.widget == 'ip':
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response = add_ip_card(html_soup, get_client_ip(request))
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elif search_util.widget == 'calculator' and not 'nojs' in request.args:
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response = add_calculator_card(html_soup)
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# Update tabs content
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tabs = get_tabs_content(app.config['HEADER_TABS'],
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search_util.full_query,
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search_util.search_type,
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g.user_config.preferences,
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translation)
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# Feature to display currency_card
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# Since this is determined by more than just the
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# query is it not defined as a standard widget
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conversion = check_currency(str(response))
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if conversion:
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html_soup = bsoup(str(response), 'html.parser')
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response = add_currency_card(html_soup, conversion)
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preferences = g.user_config.preferences
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home_url = f"home?preferences={preferences}" if preferences else "home"
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cleanresponse = str(response).replace("andlt;","<").replace("andgt;",">")
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return render_template(
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'display.html',
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has_update=app.config['HAS_UPDATE'],
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query=urlparse.unquote(query),
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search_type=search_util.search_type,
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search_name=get_search_name(search_util.search_type),
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config=g.user_config,
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autocomplete_enabled=autocomplete_enabled,
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lingva_url=app.config['TRANSLATE_URL'],
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translation=translation,
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translate_to=translate_to,
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translate_str=query.replace(
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'translate', ''
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).replace(
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translation['translate'], ''
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),
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is_translation=any(
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_ in query.lower() for _ in [translation['translate'], 'translate']
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) and not search_util.search_type, # Standard search queries only
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response=cleanresponse,
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version_number=app.config['VERSION_NUMBER'],
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search_header=render_template(
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'header.html',
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home_url=home_url,
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config=g.user_config,
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translation=translation,
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languages=app.config['LANGUAGES'],
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countries=app.config['COUNTRIES'],
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time_periods=app.config['TIME_PERIODS'],
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logo=render_template('logo.html', dark=g.user_config.dark),
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query=urlparse.unquote(query),
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search_type=search_util.search_type,
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mobile=g.user_request.mobile,
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tabs=tabs)).replace(" ", "")
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@app.route(f'/{Endpoint.config}', methods=['GET', 'POST', 'PUT'])
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@session_required
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@auth_required
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def config():
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config_disabled = (
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app.config['CONFIG_DISABLE'] or
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not valid_user_session(session))
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name = ''
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if 'name' in request.args:
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name = os.path.normpath(request.args.get('name'))
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if not re.match(r'^[A-Za-z0-9_.+-]+$', name):
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return make_response('Invalid config name', 400)
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if request.method == 'GET':
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return json.dumps(g.user_config.__dict__)
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elif request.method == 'PUT' and not config_disabled:
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if name:
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config_pkl = os.path.join(app.config['CONFIG_PATH'], name)
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session['config'] = (pickle.load(open(config_pkl, 'rb'))
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if os.path.exists(config_pkl)
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else session['config'])
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return json.dumps(session['config'])
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else:
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return json.dumps({})
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elif not config_disabled:
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config_data = request.form.to_dict()
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if 'url' not in config_data or not config_data['url']:
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config_data['url'] = g.user_config.url
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# Save config by name to allow a user to easily load later
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if 'name' in request.args:
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pickle.dump(
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config_data,
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open(os.path.join(
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app.config['CONFIG_PATH'],
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name), 'wb'))
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session['config'] = config_data
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return redirect(config_data['url'])
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else:
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return redirect(url_for('.index'), code=403)
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@app.route(f'/{Endpoint.imgres}')
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@session_required
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@auth_required
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def imgres():
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return redirect(request.args.get('imgurl'))
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@app.route(f'/{Endpoint.element}')
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@session_required
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@auth_required
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def element():
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element_url = src_url = request.args.get('url')
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if element_url.startswith('gAAAAA'):
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try:
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cipher_suite = Fernet(g.session_key)
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src_url = cipher_suite.decrypt(element_url.encode()).decode()
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except (InvalidSignature, InvalidToken) as e:
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return render_template(
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'error.html',
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error_message=str(e)), 401
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src_type = request.args.get('type')
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# Ensure requested element is from a valid domain
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domain = urlparse.urlparse(src_url).netloc
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if not validators.domain(domain):
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return send_file(io.BytesIO(empty_gif), mimetype='image/gif')
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|
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try:
|
|
response = g.user_request.send(base_url=src_url)
|
|
|
|
# Display an empty gif if the requested element couldn't be retrieved
|
|
if response.status_code != 200 or len(response.content) == 0:
|
|
if 'favicon' in src_url:
|
|
favicon = fetch_favicon(src_url)
|
|
return send_file(io.BytesIO(favicon), mimetype='image/png')
|
|
else:
|
|
return send_file(io.BytesIO(empty_gif), mimetype='image/gif')
|
|
|
|
file_data = response.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
|
|
|
|
return send_file(io.BytesIO(empty_gif), mimetype='image/gif')
|
|
|
|
|
|
@app.route(f'/{Endpoint.window}')
|
|
@session_required
|
|
@auth_required
|
|
def window():
|
|
target_url = request.args.get('location')
|
|
if target_url.startswith('gAAAAA'):
|
|
cipher_suite = Fernet(g.session_key)
|
|
target_url = cipher_suite.decrypt(target_url.encode()).decode()
|
|
|
|
content_filter = Filter(
|
|
g.session_key,
|
|
root_url=request.url_root,
|
|
config=g.user_config)
|
|
target = urlparse.urlparse(target_url)
|
|
|
|
# Ensure requested URL has a valid domain
|
|
if not validators.domain(target.netloc):
|
|
return render_template(
|
|
'error.html',
|
|
error_message='Invalid location'), 400
|
|
|
|
host_url = f'{target.scheme}://{target.netloc}'
|
|
|
|
get_body = g.user_request.send(base_url=target_url).text
|
|
|
|
results = bsoup(get_body, 'html.parser')
|
|
src_attrs = ['src', 'href', 'srcset', 'data-srcset', 'data-src']
|
|
|
|
# Parse HTML response and replace relative links w/ absolute
|
|
for element in results.find_all():
|
|
for attr in src_attrs:
|
|
if not element.has_attr(attr) or not element[attr].startswith('/'):
|
|
continue
|
|
|
|
element[attr] = host_url + element[attr]
|
|
|
|
# Replace or remove javascript sources
|
|
for script in results.find_all('script', {'src': True}):
|
|
if 'nojs' in request.args:
|
|
script.decompose()
|
|
else:
|
|
content_filter.update_element_src(script, 'application/javascript')
|
|
|
|
# Replace all possible image attributes
|
|
img_sources = ['src', 'data-src', 'data-srcset', 'srcset']
|
|
for img in results.find_all('img'):
|
|
_ = [
|
|
content_filter.update_element_src(img, 'image/png', attr=_)
|
|
for _ in img_sources if img.has_attr(_)
|
|
]
|
|
|
|
# Replace all stylesheet sources
|
|
for link in results.find_all('link', {'href': True}):
|
|
content_filter.update_element_src(link, 'text/css', attr='href')
|
|
|
|
# Use anonymous view for all links on page
|
|
for a in results.find_all('a', {'href': True}):
|
|
a['href'] = f'{Endpoint.window}?location=' + a['href'] + (
|
|
'&nojs=1' if 'nojs' in request.args else '')
|
|
|
|
# Remove all iframes -- these are commonly used inside of <noscript> tags
|
|
# to enforce loading Google Analytics
|
|
for iframe in results.find_all('iframe'):
|
|
iframe.decompose()
|
|
|
|
return render_template(
|
|
'display.html',
|
|
response=results,
|
|
translation=app.config['TRANSLATIONS'][
|
|
g.user_config.get_localization_lang()
|
|
]
|
|
)
|
|
|
|
|
|
@app.route(f'/robots.txt')
|
|
def robots():
|
|
response = make_response(
|
|
'''User-Agent: *
|
|
Disallow: /''', 200)
|
|
response.mimetype = 'text/plain'
|
|
return response
|
|
|
|
|
|
@app.errorhandler(404)
|
|
def page_not_found(e):
|
|
return render_template('error.html', error_message=str(e)), 404
|
|
|
|
|
|
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(
|
|
'--unix-socket',
|
|
default='',
|
|
metavar='</path/to/unix.sock>',
|
|
help='Listen for app on unix socket instead of host:port')
|
|
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)
|
|
elif args.unix_socket:
|
|
waitress.serve(app, unix_socket=args.unix_socket)
|
|
else:
|
|
waitress.serve(
|
|
app,
|
|
listen="{}:{}".format(args.host, args.port),
|
|
url_prefix=os.environ.get('WHOOGLE_URL_PREFIX', ''))
|