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	Some HTTP-Clients do have issues with the ``opensearch.xml`` from SearXNG (related [1][2]) while other OpenSearch descriptions[3] (e.g. from qwant) work flawles. Inspired by the OpenSearch description from qwant and with informations from the specification[4] the ``opensearch.xml`` has been *improved*. - convert `<Url>` methods from lower case to upper case (`POST`|`GET`) - add `<moz:SearchForm>` and `xmlns:moz="http://www.mozilla.org/2006/browser/search/"` - add `<Query role="example" searchTerms="SearXNG" />` [4] OpenSearch description documents should include at least one Query element of `role="example"` that is expected to return search results. Search clients may use this example query to validate that the search engine is working properly. - modified `<LongName>` to SearXNG - modified `<Description>` the word 'hackable' scares uninitiated users and was removed - add the `type="image/png"` to `<Image>` Test can be done by:: make run Visit http://127.0.0.1:8888/ and add the search engine to your WEB-Browser / test with different WEB-Browser from desktop and Smartphones (are there any iOS user here, please test on Safari and Chrome). [1] https://app.element.io/#/room/#searxng:matrix.org/$xN_abdKhNqUlgXRBrb_9F3pqOxnSzGQ1TG0s0G9hQVw [2] https://github.com/searxng/searxng/issues/431 [3] https://developer.mozilla.org/en-US/docs/Web/OpenSearch [4] https://github.com/dewitt/opensearch/blob/master/opensearch-1-1-draft-6.md#the-query-element Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
		
			
				
	
	
		
			1415 lines
		
	
	
		
			51 KiB
		
	
	
	
		
			Python
		
	
	
		
			Executable File
		
	
	
	
	
			
		
		
	
	
			1415 lines
		
	
	
		
			51 KiB
		
	
	
	
		
			Python
		
	
	
		
			Executable File
		
	
	
	
	
#!/usr/bin/env python
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# SPDX-License-Identifier: AGPL-3.0-or-later
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# lint: pylint
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# pyright: basic
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"""WebbApp
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"""
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import hashlib
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import hmac
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import json
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import os
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import sys
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import base64
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from datetime import datetime, timedelta
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from timeit import default_timer
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from html import escape
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from io import StringIO
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import typing
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from typing import List, Dict, Iterable
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import urllib
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import urllib.parse
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from urllib.parse import urlencode, unquote
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import httpx
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from pygments import highlight
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from pygments.lexers import get_lexer_by_name
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from pygments.formatters import HtmlFormatter  # pylint: disable=no-name-in-module
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import flask
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from flask import (
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    Flask,
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    render_template,
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    url_for,
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    make_response,
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    redirect,
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    send_from_directory,
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)
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from flask.wrappers import Response
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from flask.json import jsonify
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from flask_babel import (
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    Babel,
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    gettext,
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    format_date,
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    format_decimal,
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)
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from searx import (
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    logger,
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    get_setting,
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    settings,
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    searx_debug,
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)
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from searx import infopage
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from searx.data import ENGINE_DESCRIPTIONS
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from searx.results import Timing, UnresponsiveEngine
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from searx.settings_defaults import OUTPUT_FORMATS
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from searx.settings_loader import get_default_settings_path
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from searx.exceptions import SearxParameterException
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from searx.engines import (
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    OTHER_CATEGORY,
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    categories,
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    engines,
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    engine_shortcuts,
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)
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from searx.webutils import (
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    UnicodeWriter,
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    highlight_content,
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    get_static_files,
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    get_result_templates,
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    get_themes,
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    prettify_url,
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    new_hmac,
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    is_hmac_of,
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    is_flask_run_cmdline,
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    group_engines_in_tab,
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)
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from searx.webadapter import (
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    get_search_query_from_webapp,
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    get_selected_categories,
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)
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from searx.utils import (
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    html_to_text,
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    gen_useragent,
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    dict_subset,
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    match_language,
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)
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from searx.version import VERSION_STRING, GIT_URL, GIT_BRANCH
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from searx.query import RawTextQuery
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from searx.plugins import Plugin, plugins, initialize as plugin_initialize
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from searx.plugins.oa_doi_rewrite import get_doi_resolver
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from searx.preferences import (
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    Preferences,
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    ValidationException,
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)
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from searx.answerers import (
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    answerers,
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    ask,
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)
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from searx.metrics import (
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    get_engines_stats,
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    get_engine_errors,
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    get_reliabilities,
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    histogram,
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    counter,
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)
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from searx.flaskfix import patch_application
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from searx.locales import (
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    LOCALE_NAMES,
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    RTL_LOCALES,
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    localeselector,
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    locales_initialize,
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)
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# renaming names from searx imports ...
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from searx.autocomplete import search_autocomplete, backends as autocomplete_backends
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from searx.languages import language_codes as languages
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from searx.search import SearchWithPlugins, initialize as search_initialize
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from searx.network import stream as http_stream, set_context_network_name
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from searx.search.checker import get_result as checker_get_result
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logger = logger.getChild('webapp')
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# check secret_key
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if not searx_debug and settings['server']['secret_key'] == 'ultrasecretkey':
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    logger.error('server.secret_key is not changed. Please use something else instead of ultrasecretkey.')
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    sys.exit(1)
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# about static
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logger.debug('static directory is %s', settings['ui']['static_path'])
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static_files = get_static_files(settings['ui']['static_path'])
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# about templates
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logger.debug('templates directory is %s', settings['ui']['templates_path'])
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default_theme = settings['ui']['default_theme']
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templates_path = settings['ui']['templates_path']
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themes = get_themes(templates_path)
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result_templates = get_result_templates(templates_path)
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STATS_SORT_PARAMETERS = {
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    'name': (False, 'name', ''),
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    'score': (True, 'score', 0),
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    'result_count': (True, 'result_count', 0),
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    'time': (False, 'total', 0),
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    'reliability': (False, 'reliability', 100),
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}
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# Flask app
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app = Flask(__name__, static_folder=settings['ui']['static_path'], template_folder=templates_path)
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app.jinja_env.trim_blocks = True
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app.jinja_env.lstrip_blocks = True
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app.jinja_env.add_extension('jinja2.ext.loopcontrols')  # pylint: disable=no-member
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app.jinja_env.filters['group_engines_in_tab'] = group_engines_in_tab  # pylint: disable=no-member
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app.secret_key = settings['server']['secret_key']
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babel = Babel(app)
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timeout_text = gettext('timeout')
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parsing_error_text = gettext('parsing error')
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http_protocol_error_text = gettext('HTTP protocol error')
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network_error_text = gettext('network error')
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exception_classname_to_text = {
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    None: gettext('unexpected crash'),
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    'timeout': timeout_text,
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    'asyncio.TimeoutError': timeout_text,
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    'httpx.TimeoutException': timeout_text,
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    'httpx.ConnectTimeout': timeout_text,
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    'httpx.ReadTimeout': timeout_text,
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    'httpx.WriteTimeout': timeout_text,
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    'httpx.HTTPStatusError': gettext('HTTP error'),
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    'httpx.ConnectError': gettext("HTTP connection error"),
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    'httpx.RemoteProtocolError': http_protocol_error_text,
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    'httpx.LocalProtocolError': http_protocol_error_text,
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    'httpx.ProtocolError': http_protocol_error_text,
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    'httpx.ReadError': network_error_text,
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    'httpx.WriteError': network_error_text,
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    'httpx.ProxyError': gettext("proxy error"),
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    'searx.exceptions.SearxEngineCaptchaException': gettext("CAPTCHA"),
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    'searx.exceptions.SearxEngineTooManyRequestsException': gettext("too many requests"),
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    'searx.exceptions.SearxEngineAccessDeniedException': gettext("access denied"),
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    'searx.exceptions.SearxEngineAPIException': gettext("server API error"),
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    'searx.exceptions.SearxEngineXPathException': parsing_error_text,
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    'KeyError': parsing_error_text,
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    'json.decoder.JSONDecodeError': parsing_error_text,
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    'lxml.etree.ParserError': parsing_error_text,
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}
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class ExtendedRequest(flask.Request):
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    """This class is never initialized and only used for type checking."""
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    preferences: Preferences
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    errors: List[str]
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    user_plugins: List[Plugin]
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    form: Dict[str, str]
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    start_time: float
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    render_time: float
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    timings: List[Timing]
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request = typing.cast(ExtendedRequest, flask.request)
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@babel.localeselector
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def get_locale():
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    locale = localeselector()
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    logger.debug("%s uses locale `%s`", urllib.parse.quote(request.url), locale)
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    return locale
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def _get_browser_language(req, lang_list):
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    for lang in req.headers.get("Accept-Language", "en").split(","):
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        if ';' in lang:
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            lang = lang.split(';')[0]
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        if '-' in lang:
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            lang_parts = lang.split('-')
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            lang = "{}-{}".format(lang_parts[0], lang_parts[-1].upper())
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        locale = match_language(lang, lang_list, fallback=None)
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        if locale is not None:
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            return locale
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    return 'en'
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def _get_locale_rfc5646(locale):
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    """Get locale name for <html lang="...">
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    Chrom* browsers don't detect the language when there is a subtag (ie a territory).
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    For example "zh-TW" is detected but not "zh-Hant-TW".
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    This function returns a locale without the subtag.
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    """
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    parts = locale.split('-')
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    return parts[0].lower() + '-' + parts[-1].upper()
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# code-highlighter
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@app.template_filter('code_highlighter')
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def code_highlighter(codelines, language=None):
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    if not language:
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        language = 'text'
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    try:
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        # find lexer by programing language
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        lexer = get_lexer_by_name(language, stripall=True)
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    except Exception as e:  # pylint: disable=broad-except
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        logger.exception(e, exc_info=True)
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        # if lexer is not found, using default one
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        lexer = get_lexer_by_name('text', stripall=True)
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    html_code = ''
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    tmp_code = ''
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    last_line = None
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    line_code_start = None
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    # parse lines
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    for line, code in codelines:
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        if not last_line:
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            line_code_start = line
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        # new codeblock is detected
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        if last_line is not None and last_line + 1 != line:
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            # highlight last codepart
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            formatter = HtmlFormatter(linenos='inline', linenostart=line_code_start, cssclass="code-highlight")
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            html_code = html_code + highlight(tmp_code, lexer, formatter)
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            # reset conditions for next codepart
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            tmp_code = ''
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            line_code_start = line
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        # add codepart
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        tmp_code += code + '\n'
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        # update line
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        last_line = line
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    # highlight last codepart
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    formatter = HtmlFormatter(linenos='inline', linenostart=line_code_start, cssclass="code-highlight")
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    html_code = html_code + highlight(tmp_code, lexer, formatter)
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    return html_code
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def get_result_template(theme_name: str, template_name: str):
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    themed_path = theme_name + '/result_templates/' + template_name
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    if themed_path in result_templates:
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        return themed_path
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    return 'result_templates/' + template_name
 | 
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 | 
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def custom_url_for(endpoint: str, **values):
 | 
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    suffix = ""
 | 
						||
    if endpoint == 'static' and values.get('filename'):
 | 
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        file_hash = static_files.get(values['filename'])
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						||
        if not file_hash:
 | 
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            # try file in the current theme
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            theme_name = request.preferences.get_value('theme')
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            filename_with_theme = "themes/{}/{}".format(theme_name, values['filename'])
 | 
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            file_hash = static_files.get(filename_with_theme)
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            if file_hash:
 | 
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                values['filename'] = filename_with_theme
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        if get_setting('ui.static_use_hash') and file_hash:
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            suffix = "?" + file_hash
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    if endpoint == 'info' and 'locale' not in values:
 | 
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        locale = request.preferences.get_value('locale')
 | 
						||
        if _INFO_PAGES.get_page(values['pagename'], locale) is None:
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            locale = _INFO_PAGES.locale_default
 | 
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        values['locale'] = locale
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    return url_for(endpoint, **values) + suffix
 | 
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 | 
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 | 
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def proxify(url: str):
 | 
						||
    if url.startswith('//'):
 | 
						||
        url = 'https:' + url
 | 
						||
 | 
						||
    if not settings.get('result_proxy'):
 | 
						||
        return url
 | 
						||
 | 
						||
    url_params = dict(mortyurl=url)
 | 
						||
 | 
						||
    if settings['result_proxy'].get('key'):
 | 
						||
        url_params['mortyhash'] = hmac.new(settings['result_proxy']['key'], url.encode(), hashlib.sha256).hexdigest()
 | 
						||
 | 
						||
    return '{0}?{1}'.format(settings['result_proxy']['url'], urlencode(url_params))
 | 
						||
 | 
						||
 | 
						||
def image_proxify(url: str):
 | 
						||
 | 
						||
    if url.startswith('//'):
 | 
						||
        url = 'https:' + url
 | 
						||
 | 
						||
    if not request.preferences.get_value('image_proxy'):
 | 
						||
        return url
 | 
						||
 | 
						||
    if url.startswith('data:image/'):
 | 
						||
        # 50 is an arbitrary number to get only the beginning of the image.
 | 
						||
        partial_base64 = url[len('data:image/') : 50].split(';')
 | 
						||
        if (
 | 
						||
            len(partial_base64) == 2
 | 
						||
            and partial_base64[0] in ['gif', 'png', 'jpeg', 'pjpeg', 'webp', 'tiff', 'bmp']
 | 
						||
            and partial_base64[1].startswith('base64,')
 | 
						||
        ):
 | 
						||
            return url
 | 
						||
        return None
 | 
						||
 | 
						||
    if settings.get('result_proxy'):
 | 
						||
        return proxify(url)
 | 
						||
 | 
						||
    h = new_hmac(settings['server']['secret_key'], url.encode())
 | 
						||
 | 
						||
    return '{0}?{1}'.format(url_for('image_proxy'), urlencode(dict(url=url.encode(), h=h)))
 | 
						||
 | 
						||
 | 
						||
def get_translations():
 | 
						||
    return {
 | 
						||
        # when there is autocompletion
 | 
						||
        'no_item_found': gettext('No item found'),
 | 
						||
        # /preferences: the source of the engine description (wikipedata, wikidata, website)
 | 
						||
        'Source': gettext('Source'),
 | 
						||
        # infinite scroll
 | 
						||
        'error_loading_next_page': gettext('Error loading the next page'),
 | 
						||
    }
 | 
						||
 | 
						||
 | 
						||
def _get_enable_categories(all_categories: Iterable[str]):
 | 
						||
    disabled_engines = request.preferences.engines.get_disabled()
 | 
						||
    enabled_categories = set(
 | 
						||
        # pylint: disable=consider-using-dict-items
 | 
						||
        category
 | 
						||
        for engine_name in engines
 | 
						||
        for category in engines[engine_name].categories
 | 
						||
        if (engine_name, category) not in disabled_engines
 | 
						||
    )
 | 
						||
    return [x for x in all_categories if x in enabled_categories]
 | 
						||
 | 
						||
 | 
						||
def get_pretty_url(parsed_url: urllib.parse.ParseResult):
 | 
						||
    path = parsed_url.path
 | 
						||
    path = path[:-1] if len(path) > 0 and path[-1] == '/' else path
 | 
						||
    path = unquote(path.replace("/", " › "))
 | 
						||
    return [parsed_url.scheme + "://" + parsed_url.netloc, path]
 | 
						||
 | 
						||
 | 
						||
def get_client_settings():
 | 
						||
    req_pref = request.preferences
 | 
						||
    return {
 | 
						||
        'autocomplete_provider': req_pref.get_value('autocomplete'),
 | 
						||
        'autocomplete_min': get_setting('search.autocomplete_min'),
 | 
						||
        'http_method': req_pref.get_value('method'),
 | 
						||
        'infinite_scroll': req_pref.get_value('infinite_scroll'),
 | 
						||
        'translations': get_translations(),
 | 
						||
        'search_on_category_select': req_pref.plugins.choices['searx.plugins.search_on_category_select'],
 | 
						||
        'hotkeys': req_pref.plugins.choices['searx.plugins.vim_hotkeys'],
 | 
						||
        'theme_static_path': custom_url_for('static', filename='themes/simple'),
 | 
						||
    }
 | 
						||
 | 
						||
 | 
						||
def render(template_name: str, **kwargs):
 | 
						||
 | 
						||
    kwargs['client_settings'] = str(
 | 
						||
        base64.b64encode(
 | 
						||
            bytes(
 | 
						||
                json.dumps(get_client_settings()),
 | 
						||
                encoding='utf-8',
 | 
						||
            )
 | 
						||
        ),
 | 
						||
        encoding='utf-8',
 | 
						||
    )
 | 
						||
 | 
						||
    # values from the HTTP requests
 | 
						||
    kwargs['endpoint'] = 'results' if 'q' in kwargs else request.endpoint
 | 
						||
    kwargs['cookies'] = request.cookies
 | 
						||
    kwargs['errors'] = request.errors
 | 
						||
 | 
						||
    # values from the preferences
 | 
						||
    kwargs['preferences'] = request.preferences
 | 
						||
    kwargs['autocomplete'] = request.preferences.get_value('autocomplete')
 | 
						||
    kwargs['infinite_scroll'] = request.preferences.get_value('infinite_scroll')
 | 
						||
    kwargs['results_on_new_tab'] = request.preferences.get_value('results_on_new_tab')
 | 
						||
    kwargs['advanced_search'] = request.preferences.get_value('advanced_search')
 | 
						||
    kwargs['query_in_title'] = request.preferences.get_value('query_in_title')
 | 
						||
    kwargs['safesearch'] = str(request.preferences.get_value('safesearch'))
 | 
						||
    kwargs['theme'] = request.preferences.get_value('theme')
 | 
						||
    kwargs['method'] = request.preferences.get_value('method')
 | 
						||
    kwargs['categories_as_tabs'] = list(settings['categories_as_tabs'].keys())
 | 
						||
    kwargs['categories'] = _get_enable_categories(categories.keys())
 | 
						||
    kwargs['OTHER_CATEGORY'] = OTHER_CATEGORY
 | 
						||
 | 
						||
    # i18n
 | 
						||
    kwargs['language_codes'] = [l for l in languages if l[0] in settings['search']['languages']]
 | 
						||
 | 
						||
    locale = request.preferences.get_value('locale')
 | 
						||
    kwargs['locale_rfc5646'] = _get_locale_rfc5646(locale)
 | 
						||
 | 
						||
    if locale in RTL_LOCALES and 'rtl' not in kwargs:
 | 
						||
        kwargs['rtl'] = True
 | 
						||
    if 'current_language' not in kwargs:
 | 
						||
        kwargs['current_language'] = match_language(
 | 
						||
            request.preferences.get_value('language'), settings['search']['languages']
 | 
						||
        )
 | 
						||
 | 
						||
    # values from settings
 | 
						||
    kwargs['search_formats'] = [x for x in settings['search']['formats'] if x != 'html']
 | 
						||
    kwargs['instance_name'] = get_setting('general.instance_name')
 | 
						||
    kwargs['searx_version'] = VERSION_STRING
 | 
						||
    kwargs['searx_git_url'] = GIT_URL
 | 
						||
    kwargs['get_setting'] = get_setting
 | 
						||
    kwargs['get_pretty_url'] = get_pretty_url
 | 
						||
 | 
						||
    # values from settings: donation_url
 | 
						||
    donation_url = get_setting('general.donation_url')
 | 
						||
    if donation_url is True:
 | 
						||
        donation_url = custom_url_for('info', pagename='donate')
 | 
						||
    kwargs['donation_url'] = donation_url
 | 
						||
 | 
						||
    # helpers to create links to other pages
 | 
						||
    kwargs['url_for'] = custom_url_for  # override url_for function in templates
 | 
						||
    kwargs['image_proxify'] = image_proxify
 | 
						||
    kwargs['proxify'] = proxify if settings.get('result_proxy', {}).get('url') else None
 | 
						||
    kwargs['proxify_results'] = settings.get('result_proxy', {}).get('proxify_results', True)
 | 
						||
    kwargs['get_result_template'] = get_result_template
 | 
						||
    kwargs['opensearch_url'] = (
 | 
						||
        url_for('opensearch')
 | 
						||
        + '?'
 | 
						||
        + urlencode(
 | 
						||
            {
 | 
						||
                'method': request.preferences.get_value('method'),
 | 
						||
                'autocomplete': request.preferences.get_value('autocomplete'),
 | 
						||
            }
 | 
						||
        )
 | 
						||
    )
 | 
						||
 | 
						||
    # scripts from plugins
 | 
						||
    kwargs['scripts'] = set()
 | 
						||
    for plugin in request.user_plugins:
 | 
						||
        for script in plugin.js_dependencies:
 | 
						||
            kwargs['scripts'].add(script)
 | 
						||
 | 
						||
    # styles from plugins
 | 
						||
    kwargs['styles'] = set()
 | 
						||
    for plugin in request.user_plugins:
 | 
						||
        for css in plugin.css_dependencies:
 | 
						||
            kwargs['styles'].add(css)
 | 
						||
 | 
						||
    start_time = default_timer()
 | 
						||
    result = render_template('{}/{}'.format(kwargs['theme'], template_name), **kwargs)
 | 
						||
    request.render_time += default_timer() - start_time  # pylint: disable=assigning-non-slot
 | 
						||
 | 
						||
    return result
 | 
						||
 | 
						||
 | 
						||
@app.before_request
 | 
						||
def pre_request():
 | 
						||
    request.start_time = default_timer()  # pylint: disable=assigning-non-slot
 | 
						||
    request.render_time = 0  # pylint: disable=assigning-non-slot
 | 
						||
    request.timings = []  # pylint: disable=assigning-non-slot
 | 
						||
    request.errors = []  # pylint: disable=assigning-non-slot
 | 
						||
 | 
						||
    preferences = Preferences(themes, list(categories.keys()), engines, plugins)  # pylint: disable=redefined-outer-name
 | 
						||
    user_agent = request.headers.get('User-Agent', '').lower()
 | 
						||
    if 'webkit' in user_agent and 'android' in user_agent:
 | 
						||
        preferences.key_value_settings['method'].value = 'GET'
 | 
						||
    request.preferences = preferences  # pylint: disable=assigning-non-slot
 | 
						||
 | 
						||
    try:
 | 
						||
        preferences.parse_dict(request.cookies)
 | 
						||
 | 
						||
    except Exception as e:  # pylint: disable=broad-except
 | 
						||
        logger.exception(e, exc_info=True)
 | 
						||
        request.errors.append(gettext('Invalid settings, please edit your preferences'))
 | 
						||
 | 
						||
    # merge GET, POST vars
 | 
						||
    # request.form
 | 
						||
    request.form = dict(request.form.items())  # pylint: disable=assigning-non-slot
 | 
						||
    for k, v in request.args.items():
 | 
						||
        if k not in request.form:
 | 
						||
            request.form[k] = v
 | 
						||
 | 
						||
    if request.form.get('preferences'):
 | 
						||
        preferences.parse_encoded_data(request.form['preferences'])
 | 
						||
    else:
 | 
						||
        try:
 | 
						||
            preferences.parse_dict(request.form)
 | 
						||
        except Exception as e:  # pylint: disable=broad-except
 | 
						||
            logger.exception(e, exc_info=True)
 | 
						||
            request.errors.append(gettext('Invalid settings'))
 | 
						||
 | 
						||
    # language is defined neither in settings nor in preferences
 | 
						||
    # use browser headers
 | 
						||
    if not preferences.get_value("language"):
 | 
						||
        language = _get_browser_language(request, settings['search']['languages'])
 | 
						||
        preferences.parse_dict({"language": language})
 | 
						||
        logger.debug('set language %s (from browser)', preferences.get_value("language"))
 | 
						||
 | 
						||
    # locale is defined neither in settings nor in preferences
 | 
						||
    # use browser headers
 | 
						||
    if not preferences.get_value("locale"):
 | 
						||
        locale = _get_browser_language(request, LOCALE_NAMES.keys())
 | 
						||
        preferences.parse_dict({"locale": locale})
 | 
						||
        logger.debug('set locale %s (from browser)', preferences.get_value("locale"))
 | 
						||
 | 
						||
    # request.user_plugins
 | 
						||
    request.user_plugins = []  # pylint: disable=assigning-non-slot
 | 
						||
    allowed_plugins = preferences.plugins.get_enabled()
 | 
						||
    disabled_plugins = preferences.plugins.get_disabled()
 | 
						||
    for plugin in plugins:
 | 
						||
        if (plugin.default_on and plugin.id not in disabled_plugins) or plugin.id in allowed_plugins:
 | 
						||
            request.user_plugins.append(plugin)
 | 
						||
 | 
						||
 | 
						||
@app.after_request
 | 
						||
def add_default_headers(response: flask.Response):
 | 
						||
    # set default http headers
 | 
						||
    for header, value in settings['server']['default_http_headers'].items():
 | 
						||
        if header in response.headers:
 | 
						||
            continue
 | 
						||
        response.headers[header] = value
 | 
						||
    return response
 | 
						||
 | 
						||
 | 
						||
@app.after_request
 | 
						||
def post_request(response: flask.Response):
 | 
						||
    total_time = default_timer() - request.start_time
 | 
						||
    timings_all = [
 | 
						||
        'total;dur=' + str(round(total_time * 1000, 3)),
 | 
						||
        'render;dur=' + str(round(request.render_time * 1000, 3)),
 | 
						||
    ]
 | 
						||
    if len(request.timings) > 0:
 | 
						||
        timings = sorted(request.timings, key=lambda t: t.total)
 | 
						||
        timings_total = [
 | 
						||
            'total_' + str(i) + '_' + t.engine + ';dur=' + str(round(t.total * 1000, 3)) for i, t in enumerate(timings)
 | 
						||
        ]
 | 
						||
        timings_load = [
 | 
						||
            'load_' + str(i) + '_' + t.engine + ';dur=' + str(round(t.load * 1000, 3))
 | 
						||
            for i, t in enumerate(timings)
 | 
						||
            if t.load
 | 
						||
        ]
 | 
						||
        timings_all = timings_all + timings_total + timings_load
 | 
						||
    response.headers.add('Server-Timing', ', '.join(timings_all))
 | 
						||
    return response
 | 
						||
 | 
						||
 | 
						||
def index_error(output_format: str, error_message: str):
 | 
						||
    if output_format == 'json':
 | 
						||
        return Response(json.dumps({'error': error_message}), mimetype='application/json')
 | 
						||
    if output_format == 'csv':
 | 
						||
        response = Response('', mimetype='application/csv')
 | 
						||
        cont_disp = 'attachment;Filename=searx.csv'
 | 
						||
        response.headers.add('Content-Disposition', cont_disp)
 | 
						||
        return response
 | 
						||
 | 
						||
    if output_format == 'rss':
 | 
						||
        response_rss = render(
 | 
						||
            'opensearch_response_rss.xml',
 | 
						||
            results=[],
 | 
						||
            q=request.form['q'] if 'q' in request.form else '',
 | 
						||
            number_of_results=0,
 | 
						||
            error_message=error_message,
 | 
						||
        )
 | 
						||
        return Response(response_rss, mimetype='text/xml')
 | 
						||
 | 
						||
    # html
 | 
						||
    request.errors.append(gettext('search error'))
 | 
						||
    return render(
 | 
						||
        # fmt: off
 | 
						||
        'index.html',
 | 
						||
        selected_categories=get_selected_categories(request.preferences, request.form),
 | 
						||
        # fmt: on
 | 
						||
    )
 | 
						||
 | 
						||
 | 
						||
@app.route('/', methods=['GET', 'POST'])
 | 
						||
def index():
 | 
						||
    """Render index page."""
 | 
						||
 | 
						||
    # redirect to search if there's a query in the request
 | 
						||
    if request.form.get('q'):
 | 
						||
        query = ('?' + request.query_string.decode()) if request.query_string else ''
 | 
						||
        return redirect(url_for('search') + query, 308)
 | 
						||
 | 
						||
    return render(
 | 
						||
        # fmt: off
 | 
						||
        'index.html',
 | 
						||
        selected_categories=get_selected_categories(request.preferences, request.form),
 | 
						||
        current_locale = request.preferences.get_value("locale"),
 | 
						||
        # fmt: on
 | 
						||
    )
 | 
						||
 | 
						||
 | 
						||
@app.route('/healthz', methods=['GET'])
 | 
						||
def health():
 | 
						||
    return Response('OK', mimetype='text/plain')
 | 
						||
 | 
						||
 | 
						||
@app.route('/search', methods=['GET', 'POST'])
 | 
						||
def search():
 | 
						||
    """Search query in q and return results.
 | 
						||
 | 
						||
    Supported outputs: html, json, csv, rss.
 | 
						||
    """
 | 
						||
    # pylint: disable=too-many-locals, too-many-return-statements, too-many-branches
 | 
						||
    # pylint: disable=too-many-statements
 | 
						||
 | 
						||
    # output_format
 | 
						||
    output_format = request.form.get('format', 'html')
 | 
						||
    if output_format not in OUTPUT_FORMATS:
 | 
						||
        output_format = 'html'
 | 
						||
 | 
						||
    if output_format not in settings['search']['formats']:
 | 
						||
        flask.abort(403)
 | 
						||
 | 
						||
    # check if there is query (not None and not an empty string)
 | 
						||
    if not request.form.get('q'):
 | 
						||
        if output_format == 'html':
 | 
						||
            return render(
 | 
						||
                # fmt: off
 | 
						||
                'index.html',
 | 
						||
                selected_categories=get_selected_categories(request.preferences, request.form),
 | 
						||
                # fmt: on
 | 
						||
            )
 | 
						||
        return index_error(output_format, 'No query'), 400
 | 
						||
 | 
						||
    # search
 | 
						||
    search_query = None
 | 
						||
    raw_text_query = None
 | 
						||
    result_container = None
 | 
						||
    try:
 | 
						||
        search_query, raw_text_query, _, _ = get_search_query_from_webapp(request.preferences, request.form)
 | 
						||
        # search = Search(search_query) #  without plugins
 | 
						||
        search = SearchWithPlugins(search_query, request.user_plugins, request)  # pylint: disable=redefined-outer-name
 | 
						||
 | 
						||
        result_container = search.search()
 | 
						||
 | 
						||
    except SearxParameterException as e:
 | 
						||
        logger.exception('search error: SearxParameterException')
 | 
						||
        return index_error(output_format, e.message), 400
 | 
						||
    except Exception as e:  # pylint: disable=broad-except
 | 
						||
        logger.exception(e, exc_info=True)
 | 
						||
        return index_error(output_format, gettext('search error')), 500
 | 
						||
 | 
						||
    # results
 | 
						||
    results = result_container.get_ordered_results()
 | 
						||
    number_of_results = result_container.results_number()
 | 
						||
    if number_of_results < result_container.results_length():
 | 
						||
        number_of_results = 0
 | 
						||
 | 
						||
    # checkin for a external bang
 | 
						||
    if result_container.redirect_url:
 | 
						||
        return redirect(result_container.redirect_url)
 | 
						||
 | 
						||
    # Server-Timing header
 | 
						||
    request.timings = result_container.get_timings()  # pylint: disable=assigning-non-slot
 | 
						||
 | 
						||
    current_template = None
 | 
						||
    previous_result = None
 | 
						||
 | 
						||
    # output
 | 
						||
    for result in results:
 | 
						||
        if output_format == 'html':
 | 
						||
            if 'content' in result and result['content']:
 | 
						||
                result['content'] = highlight_content(escape(result['content'][:1024]), search_query.query)
 | 
						||
            if 'title' in result and result['title']:
 | 
						||
                result['title'] = highlight_content(escape(result['title'] or ''), search_query.query)
 | 
						||
        else:
 | 
						||
            if result.get('content'):
 | 
						||
                result['content'] = html_to_text(result['content']).strip()
 | 
						||
            # removing html content and whitespace duplications
 | 
						||
            result['title'] = ' '.join(html_to_text(result['title']).strip().split())
 | 
						||
 | 
						||
        if 'url' in result:
 | 
						||
            result['pretty_url'] = prettify_url(result['url'])
 | 
						||
 | 
						||
        # TODO, check if timezone is calculated right  # pylint: disable=fixme
 | 
						||
        if result.get('publishedDate'):  # do not try to get a date from an empty string or a None type
 | 
						||
            try:  # test if publishedDate >= 1900 (datetime module bug)
 | 
						||
                result['pubdate'] = result['publishedDate'].strftime('%Y-%m-%d %H:%M:%S%z')
 | 
						||
            except ValueError:
 | 
						||
                result['publishedDate'] = None
 | 
						||
            else:
 | 
						||
                if result['publishedDate'].replace(tzinfo=None) >= datetime.now() - timedelta(days=1):
 | 
						||
                    timedifference = datetime.now() - result['publishedDate'].replace(tzinfo=None)
 | 
						||
                    minutes = int((timedifference.seconds / 60) % 60)
 | 
						||
                    hours = int(timedifference.seconds / 60 / 60)
 | 
						||
                    if hours == 0:
 | 
						||
                        result['publishedDate'] = gettext('{minutes} minute(s) ago').format(minutes=minutes)
 | 
						||
                    else:
 | 
						||
                        result['publishedDate'] = gettext('{hours} hour(s), {minutes} minute(s) ago').format(
 | 
						||
                            hours=hours, minutes=minutes
 | 
						||
                        )
 | 
						||
                else:
 | 
						||
                    result['publishedDate'] = format_date(result['publishedDate'])
 | 
						||
 | 
						||
        # set result['open_group'] = True when the template changes from the previous result
 | 
						||
        # set result['close_group'] = True when the template changes on the next result
 | 
						||
        if current_template != result.get('template'):
 | 
						||
            result['open_group'] = True
 | 
						||
            if previous_result:
 | 
						||
                previous_result['close_group'] = True  # pylint: disable=unsupported-assignment-operation
 | 
						||
        current_template = result.get('template')
 | 
						||
        previous_result = result
 | 
						||
 | 
						||
    if previous_result:
 | 
						||
        previous_result['close_group'] = True
 | 
						||
 | 
						||
    if output_format == 'json':
 | 
						||
        x = {
 | 
						||
            'query': search_query.query,
 | 
						||
            'number_of_results': number_of_results,
 | 
						||
            'results': results,
 | 
						||
            'answers': list(result_container.answers),
 | 
						||
            'corrections': list(result_container.corrections),
 | 
						||
            'infoboxes': result_container.infoboxes,
 | 
						||
            'suggestions': list(result_container.suggestions),
 | 
						||
            'unresponsive_engines': __get_translated_errors(result_container.unresponsive_engines),
 | 
						||
        }
 | 
						||
        response = json.dumps(x, default=lambda item: list(item) if isinstance(item, set) else item)
 | 
						||
        return Response(response, mimetype='application/json')
 | 
						||
 | 
						||
    if output_format == 'csv':
 | 
						||
        csv = UnicodeWriter(StringIO())
 | 
						||
        keys = ('title', 'url', 'content', 'host', 'engine', 'score', 'type')
 | 
						||
        csv.writerow(keys)
 | 
						||
        for row in results:
 | 
						||
            row['host'] = row['parsed_url'].netloc
 | 
						||
            row['type'] = 'result'
 | 
						||
            csv.writerow([row.get(key, '') for key in keys])
 | 
						||
        for a in result_container.answers:
 | 
						||
            row = {'title': a, 'type': 'answer'}
 | 
						||
            csv.writerow([row.get(key, '') for key in keys])
 | 
						||
        for a in result_container.suggestions:
 | 
						||
            row = {'title': a, 'type': 'suggestion'}
 | 
						||
            csv.writerow([row.get(key, '') for key in keys])
 | 
						||
        for a in result_container.corrections:
 | 
						||
            row = {'title': a, 'type': 'correction'}
 | 
						||
            csv.writerow([row.get(key, '') for key in keys])
 | 
						||
        csv.stream.seek(0)
 | 
						||
        response = Response(csv.stream.read(), mimetype='application/csv')
 | 
						||
        cont_disp = 'attachment;Filename=searx_-_{0}.csv'.format(search_query.query)
 | 
						||
        response.headers.add('Content-Disposition', cont_disp)
 | 
						||
        return response
 | 
						||
 | 
						||
    if output_format == 'rss':
 | 
						||
        response_rss = render(
 | 
						||
            'opensearch_response_rss.xml',
 | 
						||
            results=results,
 | 
						||
            answers=result_container.answers,
 | 
						||
            corrections=result_container.corrections,
 | 
						||
            suggestions=result_container.suggestions,
 | 
						||
            q=request.form['q'],
 | 
						||
            number_of_results=number_of_results,
 | 
						||
        )
 | 
						||
        return Response(response_rss, mimetype='text/xml')
 | 
						||
 | 
						||
    # HTML output format
 | 
						||
 | 
						||
    # suggestions: use RawTextQuery to get the suggestion URLs with the same bang
 | 
						||
    suggestion_urls = list(
 | 
						||
        map(
 | 
						||
            lambda suggestion: {'url': raw_text_query.changeQuery(suggestion).getFullQuery(), 'title': suggestion},
 | 
						||
            result_container.suggestions,
 | 
						||
        )
 | 
						||
    )
 | 
						||
 | 
						||
    correction_urls = list(
 | 
						||
        map(
 | 
						||
            lambda correction: {'url': raw_text_query.changeQuery(correction).getFullQuery(), 'title': correction},
 | 
						||
            result_container.corrections,
 | 
						||
        )
 | 
						||
    )
 | 
						||
 | 
						||
    return render(
 | 
						||
        # fmt: off
 | 
						||
        'results.html',
 | 
						||
        results = results,
 | 
						||
        q=request.form['q'],
 | 
						||
        selected_categories = search_query.categories,
 | 
						||
        pageno = search_query.pageno,
 | 
						||
        time_range = search_query.time_range,
 | 
						||
        number_of_results = format_decimal(number_of_results),
 | 
						||
        suggestions = suggestion_urls,
 | 
						||
        answers = result_container.answers,
 | 
						||
        corrections = correction_urls,
 | 
						||
        infoboxes = result_container.infoboxes,
 | 
						||
        engine_data = result_container.engine_data,
 | 
						||
        paging = result_container.paging,
 | 
						||
        unresponsive_engines = __get_translated_errors(
 | 
						||
            result_container.unresponsive_engines
 | 
						||
        ),
 | 
						||
        current_locale = request.preferences.get_value("locale"),
 | 
						||
        current_language = match_language(
 | 
						||
            search_query.lang,
 | 
						||
            settings['search']['languages'],
 | 
						||
            fallback=request.preferences.get_value("language")
 | 
						||
        ),
 | 
						||
        timeout_limit = request.form.get('timeout_limit', None)
 | 
						||
        # fmt: on
 | 
						||
    )
 | 
						||
 | 
						||
 | 
						||
def __get_translated_errors(unresponsive_engines: Iterable[UnresponsiveEngine]):
 | 
						||
    translated_errors = []
 | 
						||
 | 
						||
    # make a copy unresponsive_engines to avoid "RuntimeError: Set changed size
 | 
						||
    # during iteration" it happens when an engine modifies the ResultContainer
 | 
						||
    # after the search_multiple_requests method has stopped waiting
 | 
						||
 | 
						||
    for unresponsive_engine in unresponsive_engines:
 | 
						||
        error_user_text = exception_classname_to_text.get(unresponsive_engine.error_type)
 | 
						||
        if not error_user_text:
 | 
						||
            error_user_text = exception_classname_to_text[None]
 | 
						||
        error_msg = gettext(error_user_text)
 | 
						||
        if unresponsive_engine.suspended:
 | 
						||
            error_msg = gettext('Suspended') + ': ' + error_msg
 | 
						||
        translated_errors.append((unresponsive_engine.engine, error_msg))
 | 
						||
 | 
						||
    return sorted(translated_errors, key=lambda e: e[0])
 | 
						||
 | 
						||
 | 
						||
@app.route('/about', methods=['GET'])
 | 
						||
def about():
 | 
						||
    """Redirect to about page"""
 | 
						||
    # custom_url_for is going to add the locale
 | 
						||
    return redirect(custom_url_for('info', pagename='about'))
 | 
						||
 | 
						||
 | 
						||
@app.route('/info/<locale>/<pagename>', methods=['GET'])
 | 
						||
def info(pagename, locale):
 | 
						||
    """Render page of online user documentation"""
 | 
						||
    page = _INFO_PAGES.get_page(pagename, locale)
 | 
						||
    if page is None:
 | 
						||
        flask.abort(404)
 | 
						||
 | 
						||
    user_locale = request.preferences.get_value('locale')
 | 
						||
    return render(
 | 
						||
        'info.html',
 | 
						||
        all_pages=_INFO_PAGES.iter_pages(user_locale, fallback_to_default=True),
 | 
						||
        active_page=page,
 | 
						||
        active_pagename=pagename,
 | 
						||
    )
 | 
						||
 | 
						||
 | 
						||
@app.route('/autocompleter', methods=['GET', 'POST'])
 | 
						||
def autocompleter():
 | 
						||
    """Return autocompleter results"""
 | 
						||
 | 
						||
    # run autocompleter
 | 
						||
    results = []
 | 
						||
 | 
						||
    # set blocked engines
 | 
						||
    disabled_engines = request.preferences.engines.get_disabled()
 | 
						||
 | 
						||
    # parse query
 | 
						||
    raw_text_query = RawTextQuery(request.form.get('q', ''), disabled_engines)
 | 
						||
    sug_prefix = raw_text_query.getQuery()
 | 
						||
 | 
						||
    # normal autocompletion results only appear if no inner results returned
 | 
						||
    # and there is a query part
 | 
						||
    if len(raw_text_query.autocomplete_list) == 0 and len(sug_prefix) > 0:
 | 
						||
 | 
						||
        # get language from cookie
 | 
						||
        language = request.preferences.get_value('language')
 | 
						||
        if not language or language == 'all':
 | 
						||
            language = 'en'
 | 
						||
        else:
 | 
						||
            language = language.split('-')[0]
 | 
						||
 | 
						||
        # run autocompletion
 | 
						||
        raw_results = search_autocomplete(request.preferences.get_value('autocomplete'), sug_prefix, language)
 | 
						||
        for result in raw_results:
 | 
						||
            # attention: this loop will change raw_text_query object and this is
 | 
						||
            # the reason why the sug_prefix was stored before (see above)
 | 
						||
            if result != sug_prefix:
 | 
						||
                results.append(raw_text_query.changeQuery(result).getFullQuery())
 | 
						||
 | 
						||
    if len(raw_text_query.autocomplete_list) > 0:
 | 
						||
        for autocomplete_text in raw_text_query.autocomplete_list:
 | 
						||
            results.append(raw_text_query.get_autocomplete_full_query(autocomplete_text))
 | 
						||
 | 
						||
    for answers in ask(raw_text_query):
 | 
						||
        for answer in answers:
 | 
						||
            results.append(str(answer['answer']))
 | 
						||
 | 
						||
    if request.headers.get('X-Requested-With') == 'XMLHttpRequest':
 | 
						||
        # the suggestion request comes from the searx search form
 | 
						||
        suggestions = json.dumps(results)
 | 
						||
        mimetype = 'application/json'
 | 
						||
    else:
 | 
						||
        # the suggestion request comes from browser's URL bar
 | 
						||
        suggestions = json.dumps([sug_prefix, results])
 | 
						||
        mimetype = 'application/x-suggestions+json'
 | 
						||
 | 
						||
    suggestions = escape(suggestions, False)
 | 
						||
    return Response(suggestions, mimetype=mimetype)
 | 
						||
 | 
						||
 | 
						||
@app.route('/preferences', methods=['GET', 'POST'])
 | 
						||
def preferences():
 | 
						||
    """Render preferences page && save user preferences"""
 | 
						||
 | 
						||
    # pylint: disable=too-many-locals, too-many-return-statements, too-many-branches
 | 
						||
    # pylint: disable=too-many-statements
 | 
						||
 | 
						||
    # save preferences using the link the /preferences?preferences=...&save=1
 | 
						||
    if request.args.get('save') == '1':
 | 
						||
        resp = make_response(redirect(url_for('index', _external=True)))
 | 
						||
        return request.preferences.save(resp)
 | 
						||
 | 
						||
    # save preferences
 | 
						||
    if request.method == 'POST':
 | 
						||
        resp = make_response(redirect(url_for('index', _external=True)))
 | 
						||
        try:
 | 
						||
            request.preferences.parse_form(request.form)
 | 
						||
        except ValidationException:
 | 
						||
            request.errors.append(gettext('Invalid settings, please edit your preferences'))
 | 
						||
            return resp
 | 
						||
        return request.preferences.save(resp)
 | 
						||
 | 
						||
    # render preferences
 | 
						||
    image_proxy = request.preferences.get_value('image_proxy')  # pylint: disable=redefined-outer-name
 | 
						||
    disabled_engines = request.preferences.engines.get_disabled()
 | 
						||
    allowed_plugins = request.preferences.plugins.get_enabled()
 | 
						||
 | 
						||
    # stats for preferences page
 | 
						||
    filtered_engines = dict(filter(lambda kv: request.preferences.validate_token(kv[1]), engines.items()))
 | 
						||
 | 
						||
    engines_by_category = {}
 | 
						||
 | 
						||
    for c in categories:  # pylint: disable=consider-using-dict-items
 | 
						||
        engines_by_category[c] = [e for e in categories[c] if e.name in filtered_engines]
 | 
						||
        # sort the engines alphabetically since the order in settings.yml is meaningless.
 | 
						||
        list.sort(engines_by_category[c], key=lambda e: e.name)
 | 
						||
 | 
						||
    # get first element [0], the engine time,
 | 
						||
    # and then the second element [1] : the time (the first one is the label)
 | 
						||
    stats = {}  # pylint: disable=redefined-outer-name
 | 
						||
    max_rate95 = 0
 | 
						||
    for _, e in filtered_engines.items():
 | 
						||
        h = histogram('engine', e.name, 'time', 'total')
 | 
						||
        median = round(h.percentage(50), 1) if h.count > 0 else None
 | 
						||
        rate80 = round(h.percentage(80), 1) if h.count > 0 else None
 | 
						||
        rate95 = round(h.percentage(95), 1) if h.count > 0 else None
 | 
						||
 | 
						||
        max_rate95 = max(max_rate95, rate95 or 0)
 | 
						||
 | 
						||
        result_count_sum = histogram('engine', e.name, 'result', 'count').sum
 | 
						||
        successful_count = counter('engine', e.name, 'search', 'count', 'successful')
 | 
						||
        result_count = int(result_count_sum / float(successful_count)) if successful_count else 0
 | 
						||
 | 
						||
        stats[e.name] = {
 | 
						||
            'time': median,
 | 
						||
            'rate80': rate80,
 | 
						||
            'rate95': rate95,
 | 
						||
            'warn_timeout': e.timeout > settings['outgoing']['request_timeout'],
 | 
						||
            'supports_selected_language': _is_selected_language_supported(e, request.preferences),
 | 
						||
            'result_count': result_count,
 | 
						||
        }
 | 
						||
    # end of stats
 | 
						||
 | 
						||
    # reliabilities
 | 
						||
    reliabilities = {}
 | 
						||
    engine_errors = get_engine_errors(filtered_engines)
 | 
						||
    checker_results = checker_get_result()
 | 
						||
    checker_results = (
 | 
						||
        checker_results['engines'] if checker_results['status'] == 'ok' and 'engines' in checker_results else {}
 | 
						||
    )
 | 
						||
    for _, e in filtered_engines.items():
 | 
						||
        checker_result = checker_results.get(e.name, {})
 | 
						||
        checker_success = checker_result.get('success', True)
 | 
						||
        errors = engine_errors.get(e.name) or []
 | 
						||
        if counter('engine', e.name, 'search', 'count', 'sent') == 0:
 | 
						||
            # no request
 | 
						||
            reliablity = None
 | 
						||
        elif checker_success and not errors:
 | 
						||
            reliablity = 100
 | 
						||
        elif 'simple' in checker_result.get('errors', {}):
 | 
						||
            # the basic (simple) test doesn't work: the engine is broken accoding to the checker
 | 
						||
            # even if there is no exception
 | 
						||
            reliablity = 0
 | 
						||
        else:
 | 
						||
            # pylint: disable=consider-using-generator
 | 
						||
            reliablity = 100 - sum([error['percentage'] for error in errors if not error.get('secondary')])
 | 
						||
 | 
						||
        reliabilities[e.name] = {
 | 
						||
            'reliablity': reliablity,
 | 
						||
            'errors': [],
 | 
						||
            'checker': checker_results.get(e.name, {}).get('errors', {}).keys(),
 | 
						||
        }
 | 
						||
        # keep the order of the list checker_results[e.name]['errors'] and deduplicate.
 | 
						||
        # the first element has the highest percentage rate.
 | 
						||
        reliabilities_errors = []
 | 
						||
        for error in errors:
 | 
						||
            error_user_text = None
 | 
						||
            if error.get('secondary') or 'exception_classname' not in error:
 | 
						||
                continue
 | 
						||
            error_user_text = exception_classname_to_text.get(error.get('exception_classname'))
 | 
						||
            if not error:
 | 
						||
                error_user_text = exception_classname_to_text[None]
 | 
						||
            if error_user_text not in reliabilities_errors:
 | 
						||
                reliabilities_errors.append(error_user_text)
 | 
						||
        reliabilities[e.name]['errors'] = reliabilities_errors
 | 
						||
 | 
						||
    # supports
 | 
						||
    supports = {}
 | 
						||
    for _, e in filtered_engines.items():
 | 
						||
        supports_selected_language = _is_selected_language_supported(e, request.preferences)
 | 
						||
        safesearch = e.safesearch
 | 
						||
        time_range_support = e.time_range_support
 | 
						||
        for checker_test_name in checker_results.get(e.name, {}).get('errors', {}):
 | 
						||
            if supports_selected_language and checker_test_name.startswith('lang_'):
 | 
						||
                supports_selected_language = '?'
 | 
						||
            elif safesearch and checker_test_name == 'safesearch':
 | 
						||
                safesearch = '?'
 | 
						||
            elif time_range_support and checker_test_name == 'time_range':
 | 
						||
                time_range_support = '?'
 | 
						||
        supports[e.name] = {
 | 
						||
            'supports_selected_language': supports_selected_language,
 | 
						||
            'safesearch': safesearch,
 | 
						||
            'time_range_support': time_range_support,
 | 
						||
        }
 | 
						||
 | 
						||
    return render(
 | 
						||
        # fmt: off
 | 
						||
        'preferences.html',
 | 
						||
        selected_categories = get_selected_categories(request.preferences, request.form),
 | 
						||
        locales = LOCALE_NAMES,
 | 
						||
        current_locale = request.preferences.get_value("locale"),
 | 
						||
        image_proxy = image_proxy,
 | 
						||
        engines_by_category = engines_by_category,
 | 
						||
        stats = stats,
 | 
						||
        max_rate95 = max_rate95,
 | 
						||
        reliabilities = reliabilities,
 | 
						||
        supports = supports,
 | 
						||
        answerers = [
 | 
						||
            {'info': a.self_info(), 'keywords': a.keywords}
 | 
						||
            for a in answerers
 | 
						||
        ],
 | 
						||
        disabled_engines = disabled_engines,
 | 
						||
        autocomplete_backends = autocomplete_backends,
 | 
						||
        shortcuts = {y: x for x, y in engine_shortcuts.items()},
 | 
						||
        themes = themes,
 | 
						||
        plugins = plugins,
 | 
						||
        doi_resolvers = settings['doi_resolvers'],
 | 
						||
        current_doi_resolver = get_doi_resolver(request.preferences),
 | 
						||
        allowed_plugins = allowed_plugins,
 | 
						||
        preferences_url_params = request.preferences.get_as_url_params(),
 | 
						||
        locked_preferences = settings['preferences']['lock'],
 | 
						||
        preferences = True
 | 
						||
        # fmt: on
 | 
						||
    )
 | 
						||
 | 
						||
 | 
						||
def _is_selected_language_supported(engine, preferences: Preferences):  # pylint: disable=redefined-outer-name
 | 
						||
    language = preferences.get_value('language')
 | 
						||
    if language == 'all':
 | 
						||
        return True
 | 
						||
    x = match_language(
 | 
						||
        language, getattr(engine, 'supported_languages', []), getattr(engine, 'language_aliases', {}), None
 | 
						||
    )
 | 
						||
    return bool(x)
 | 
						||
 | 
						||
 | 
						||
@app.route('/image_proxy', methods=['GET'])
 | 
						||
def image_proxy():
 | 
						||
    # pylint: disable=too-many-return-statements, too-many-branches
 | 
						||
 | 
						||
    url = request.args.get('url')
 | 
						||
    if not url:
 | 
						||
        return '', 400
 | 
						||
 | 
						||
    if not is_hmac_of(settings['server']['secret_key'], url.encode(), request.args.get('h', '')):
 | 
						||
        return '', 400
 | 
						||
 | 
						||
    maximum_size = 5 * 1024 * 1024
 | 
						||
    forward_resp = False
 | 
						||
    resp = None
 | 
						||
    try:
 | 
						||
        request_headers = {
 | 
						||
            'User-Agent': gen_useragent(),
 | 
						||
            'Accept': 'image/webp,*/*',
 | 
						||
            'Accept-Encoding': 'gzip, deflate',
 | 
						||
            'Sec-GPC': '1',
 | 
						||
            'DNT': '1',
 | 
						||
        }
 | 
						||
        set_context_network_name('image_proxy')
 | 
						||
        resp, stream = http_stream(method='GET', url=url, headers=request_headers, allow_redirects=True)
 | 
						||
        content_length = resp.headers.get('Content-Length')
 | 
						||
        if content_length and content_length.isdigit() and int(content_length) > maximum_size:
 | 
						||
            return 'Max size', 400
 | 
						||
 | 
						||
        if resp.status_code != 200:
 | 
						||
            logger.debug('image-proxy: wrong response code: %i', resp.status_code)
 | 
						||
            if resp.status_code >= 400:
 | 
						||
                return '', resp.status_code
 | 
						||
            return '', 400
 | 
						||
 | 
						||
        if not resp.headers.get('Content-Type', '').startswith('image/') and not resp.headers.get(
 | 
						||
            'Content-Type', ''
 | 
						||
        ).startswith('binary/octet-stream'):
 | 
						||
            logger.debug('image-proxy: wrong content-type: %s', resp.headers.get('Content-Type', ''))
 | 
						||
            return '', 400
 | 
						||
 | 
						||
        forward_resp = True
 | 
						||
    except httpx.HTTPError:
 | 
						||
        logger.exception('HTTP error')
 | 
						||
        return '', 400
 | 
						||
    finally:
 | 
						||
        if resp and not forward_resp:
 | 
						||
            # the code is about to return an HTTP 400 error to the browser
 | 
						||
            # we make sure to close the response between searxng and the HTTP server
 | 
						||
            try:
 | 
						||
                resp.close()
 | 
						||
            except httpx.HTTPError:
 | 
						||
                logger.exception('HTTP error on closing')
 | 
						||
 | 
						||
    def close_stream():
 | 
						||
        nonlocal resp, stream
 | 
						||
        try:
 | 
						||
            if resp:
 | 
						||
                resp.close()
 | 
						||
            del resp
 | 
						||
            del stream
 | 
						||
        except httpx.HTTPError as e:
 | 
						||
            logger.debug('Exception while closing response', e)
 | 
						||
 | 
						||
    try:
 | 
						||
        headers = dict_subset(resp.headers, {'Content-Type', 'Content-Encoding', 'Content-Length', 'Length'})
 | 
						||
        response = Response(stream, mimetype=resp.headers['Content-Type'], headers=headers, direct_passthrough=True)
 | 
						||
        response.call_on_close(close_stream)
 | 
						||
        return response
 | 
						||
    except httpx.HTTPError:
 | 
						||
        close_stream()
 | 
						||
        return '', 400
 | 
						||
 | 
						||
 | 
						||
@app.route('/engine_descriptions.json', methods=['GET'])
 | 
						||
def engine_descriptions():
 | 
						||
    locale = get_locale().split('_')[0]
 | 
						||
    result = ENGINE_DESCRIPTIONS['en'].copy()
 | 
						||
    if locale != 'en':
 | 
						||
        for engine, description in ENGINE_DESCRIPTIONS.get(locale, {}).items():
 | 
						||
            result[engine] = description
 | 
						||
    for engine, description in result.items():
 | 
						||
        if len(description) == 2 and description[1] == 'ref':
 | 
						||
            ref_engine, ref_lang = description[0].split(':')
 | 
						||
            description = ENGINE_DESCRIPTIONS[ref_lang][ref_engine]
 | 
						||
        if isinstance(description, str):
 | 
						||
            description = [description, 'wikipedia']
 | 
						||
        result[engine] = description
 | 
						||
 | 
						||
    # overwrite by about:description (from settings)
 | 
						||
    for engine_name, engine_mod in engines.items():
 | 
						||
        descr = getattr(engine_mod, 'about', {}).get('description', None)
 | 
						||
        if descr is not None:
 | 
						||
            result[engine_name] = [descr, "SearXNG config"]
 | 
						||
 | 
						||
    return jsonify(result)
 | 
						||
 | 
						||
 | 
						||
@app.route('/stats', methods=['GET'])
 | 
						||
def stats():
 | 
						||
    """Render engine statistics page."""
 | 
						||
    sort_order = request.args.get('sort', default='name', type=str)
 | 
						||
    selected_engine_name = request.args.get('engine', default=None, type=str)
 | 
						||
 | 
						||
    filtered_engines = dict(filter(lambda kv: request.preferences.validate_token(kv[1]), engines.items()))
 | 
						||
    if selected_engine_name:
 | 
						||
        if selected_engine_name not in filtered_engines:
 | 
						||
            selected_engine_name = None
 | 
						||
        else:
 | 
						||
            filtered_engines = [selected_engine_name]
 | 
						||
 | 
						||
    checker_results = checker_get_result()
 | 
						||
    checker_results = (
 | 
						||
        checker_results['engines'] if checker_results['status'] == 'ok' and 'engines' in checker_results else {}
 | 
						||
    )
 | 
						||
 | 
						||
    engine_stats = get_engines_stats(filtered_engines)
 | 
						||
    engine_reliabilities = get_reliabilities(filtered_engines, checker_results)
 | 
						||
 | 
						||
    if sort_order not in STATS_SORT_PARAMETERS:
 | 
						||
        sort_order = 'name'
 | 
						||
 | 
						||
    reverse, key_name, default_value = STATS_SORT_PARAMETERS[sort_order]
 | 
						||
 | 
						||
    def get_key(engine_stat):
 | 
						||
        reliability = engine_reliabilities.get(engine_stat['name'], {}).get('reliablity', 0)
 | 
						||
        reliability_order = 0 if reliability else 1
 | 
						||
        if key_name == 'reliability':
 | 
						||
            key = reliability
 | 
						||
            reliability_order = 0
 | 
						||
        else:
 | 
						||
            key = engine_stat.get(key_name) or default_value
 | 
						||
            if reverse:
 | 
						||
                reliability_order = 1 - reliability_order
 | 
						||
        return (reliability_order, key, engine_stat['name'])
 | 
						||
 | 
						||
    engine_stats['time'] = sorted(engine_stats['time'], reverse=reverse, key=get_key)
 | 
						||
    return render(
 | 
						||
        # fmt: off
 | 
						||
        'stats.html',
 | 
						||
        sort_order = sort_order,
 | 
						||
        engine_stats = engine_stats,
 | 
						||
        engine_reliabilities = engine_reliabilities,
 | 
						||
        selected_engine_name = selected_engine_name,
 | 
						||
        searx_git_branch = GIT_BRANCH,
 | 
						||
        # fmt: on
 | 
						||
    )
 | 
						||
 | 
						||
 | 
						||
@app.route('/stats/errors', methods=['GET'])
 | 
						||
def stats_errors():
 | 
						||
    filtered_engines = dict(filter(lambda kv: request.preferences.validate_token(kv[1]), engines.items()))
 | 
						||
    result = get_engine_errors(filtered_engines)
 | 
						||
    return jsonify(result)
 | 
						||
 | 
						||
 | 
						||
@app.route('/stats/checker', methods=['GET'])
 | 
						||
def stats_checker():
 | 
						||
    result = checker_get_result()
 | 
						||
    return jsonify(result)
 | 
						||
 | 
						||
 | 
						||
@app.route('/robots.txt', methods=['GET'])
 | 
						||
def robots():
 | 
						||
    return Response(
 | 
						||
        """User-agent: *
 | 
						||
Allow: /info/en/about
 | 
						||
Disallow: /stats
 | 
						||
Disallow: /image_proxy
 | 
						||
Disallow: /preferences
 | 
						||
Disallow: /*?*q=*
 | 
						||
""",
 | 
						||
        mimetype='text/plain',
 | 
						||
    )
 | 
						||
 | 
						||
 | 
						||
@app.route('/opensearch.xml', methods=['GET'])
 | 
						||
def opensearch():
 | 
						||
    method = request.preferences.get_value('method')
 | 
						||
    autocomplete = request.preferences.get_value('autocomplete')
 | 
						||
 | 
						||
    # chrome/chromium only supports HTTP GET....
 | 
						||
    if request.headers.get('User-Agent', '').lower().find('webkit') >= 0:
 | 
						||
        method = 'GET'
 | 
						||
 | 
						||
    if method not in ('POST', 'GET'):
 | 
						||
        method = 'POST'
 | 
						||
 | 
						||
    ret = render('opensearch.xml', opensearch_method=method, autocomplete=autocomplete)
 | 
						||
    resp = Response(response=ret, status=200, mimetype="application/opensearchdescription+xml")
 | 
						||
    return resp
 | 
						||
 | 
						||
 | 
						||
@app.route('/favicon.ico')
 | 
						||
def favicon():
 | 
						||
    theme = request.preferences.get_value("theme")
 | 
						||
    return send_from_directory(
 | 
						||
        os.path.join(app.root_path, settings['ui']['static_path'], 'themes', theme, 'img'),  # pyright: ignore
 | 
						||
        'favicon.png',
 | 
						||
        mimetype='image/vnd.microsoft.icon',
 | 
						||
    )
 | 
						||
 | 
						||
 | 
						||
@app.route('/clear_cookies')
 | 
						||
def clear_cookies():
 | 
						||
    resp = make_response(redirect(url_for('index', _external=True)))
 | 
						||
    for cookie_name in request.cookies:
 | 
						||
        resp.delete_cookie(cookie_name)
 | 
						||
    return resp
 | 
						||
 | 
						||
 | 
						||
@app.route('/config')
 | 
						||
def config():
 | 
						||
    """Return configuration in JSON format."""
 | 
						||
    _engines = []
 | 
						||
    for name, engine in engines.items():
 | 
						||
        if not request.preferences.validate_token(engine):
 | 
						||
            continue
 | 
						||
 | 
						||
        supported_languages = engine.supported_languages
 | 
						||
        if isinstance(engine.supported_languages, dict):
 | 
						||
            supported_languages = list(engine.supported_languages.keys())
 | 
						||
 | 
						||
        _engines.append(
 | 
						||
            {
 | 
						||
                'name': name,
 | 
						||
                'categories': engine.categories,
 | 
						||
                'shortcut': engine.shortcut,
 | 
						||
                'enabled': not engine.disabled,
 | 
						||
                'paging': engine.paging,
 | 
						||
                'language_support': engine.language_support,
 | 
						||
                'supported_languages': supported_languages,
 | 
						||
                'safesearch': engine.safesearch,
 | 
						||
                'time_range_support': engine.time_range_support,
 | 
						||
                'timeout': engine.timeout,
 | 
						||
            }
 | 
						||
        )
 | 
						||
 | 
						||
    _plugins = []
 | 
						||
    for _ in plugins:
 | 
						||
        _plugins.append({'name': _.name, 'enabled': _.default_on})
 | 
						||
 | 
						||
    return jsonify(
 | 
						||
        {
 | 
						||
            'categories': list(categories.keys()),
 | 
						||
            'engines': _engines,
 | 
						||
            'plugins': _plugins,
 | 
						||
            'instance_name': settings['general']['instance_name'],
 | 
						||
            'locales': LOCALE_NAMES,
 | 
						||
            'default_locale': settings['ui']['default_locale'],
 | 
						||
            'autocomplete': settings['search']['autocomplete'],
 | 
						||
            'safe_search': settings['search']['safe_search'],
 | 
						||
            'default_theme': settings['ui']['default_theme'],
 | 
						||
            'version': VERSION_STRING,
 | 
						||
            'brand': {
 | 
						||
                'PRIVACYPOLICY_URL': get_setting('general.privacypolicy_url'),
 | 
						||
                'CONTACT_URL': get_setting('general.contact_url'),
 | 
						||
                'GIT_URL': GIT_URL,
 | 
						||
                'GIT_BRANCH': GIT_BRANCH,
 | 
						||
                'DOCS_URL': get_setting('brand.docs_url'),
 | 
						||
            },
 | 
						||
            'doi_resolvers': list(settings['doi_resolvers'].keys()),
 | 
						||
            'default_doi_resolver': settings['default_doi_resolver'],
 | 
						||
        }
 | 
						||
    )
 | 
						||
 | 
						||
 | 
						||
@app.errorhandler(404)
 | 
						||
def page_not_found(_e):
 | 
						||
    return render('404.html'), 404
 | 
						||
 | 
						||
 | 
						||
# see https://flask.palletsprojects.com/en/1.1.x/cli/
 | 
						||
# True if "FLASK_APP=searx/webapp.py FLASK_ENV=development flask run"
 | 
						||
flask_run_development = (
 | 
						||
    os.environ.get("FLASK_APP") is not None and os.environ.get("FLASK_ENV") == 'development' and is_flask_run_cmdline()
 | 
						||
)
 | 
						||
 | 
						||
# True if reload feature is activated of werkzeug, False otherwise (including uwsgi, etc..)
 | 
						||
#  __name__ != "__main__" if searx.webapp is imported (make test, make docs, uwsgi...)
 | 
						||
# see run() at the end of this file : searx_debug activates the reload feature.
 | 
						||
werkzeug_reloader = flask_run_development or (searx_debug and __name__ == "__main__")
 | 
						||
 | 
						||
# initialize the engines except on the first run of the werkzeug server.
 | 
						||
if not werkzeug_reloader or (werkzeug_reloader and os.environ.get("WERKZEUG_RUN_MAIN") == "true"):
 | 
						||
    locales_initialize()
 | 
						||
    _INFO_PAGES = infopage.InfoPageSet()
 | 
						||
    plugin_initialize(app)
 | 
						||
    search_initialize(enable_checker=True, check_network=True, enable_metrics=settings['general']['enable_metrics'])
 | 
						||
 | 
						||
 | 
						||
def run():
 | 
						||
    logger.debug('starting webserver on %s:%s', settings['server']['bind_address'], settings['server']['port'])
 | 
						||
    app.run(
 | 
						||
        debug=searx_debug,
 | 
						||
        use_debugger=searx_debug,
 | 
						||
        port=settings['server']['port'],
 | 
						||
        host=settings['server']['bind_address'],
 | 
						||
        threaded=True,
 | 
						||
        extra_files=[get_default_settings_path()],
 | 
						||
    )
 | 
						||
 | 
						||
 | 
						||
application = app
 | 
						||
patch_application(app)
 | 
						||
 | 
						||
if __name__ == "__main__":
 | 
						||
    run()
 |