forked from zaclys/searxng
1329 lines
47 KiB
Python
Executable File
1329 lines
47 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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# pylint: disable=use-dict-literal
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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 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, urlparse, 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_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
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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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DEFAULT_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 import webutils
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from searx.webutils import (
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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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exception_classname_to_text,
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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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parse_lang,
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)
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from searx.utils import (
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gen_useragent,
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dict_subset,
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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.botdetection import link_token
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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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ClientPref,
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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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match_locale,
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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.redisdb import initialize as redis_initialize
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from searx.sxng_locales import sxng_locales
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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_per_result', 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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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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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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babel = Babel(app, locale_selector=get_locale)
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def _get_browser_language(req, lang_list):
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client = ClientPref.from_http_request(req)
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locale = match_locale(client.locale_tag, lang_list, fallback='en')
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return locale
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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 programming 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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def custom_url_for(endpoint: str, **values):
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suffix = ""
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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')
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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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def morty_proxify(url: str):
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if url.startswith('//'):
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url = 'https:' + url
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if not settings['result_proxy']['url']:
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return url
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url_params = dict(mortyurl=url)
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if settings['result_proxy']['key']:
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url_params['mortyhash'] = hmac.new(settings['result_proxy']['key'], url.encode(), hashlib.sha256).hexdigest()
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return '{0}?{1}'.format(settings['result_proxy']['url'], urlencode(url_params))
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def image_proxify(url: str):
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if url.startswith('//'):
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url = 'https:' + url
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if not request.preferences.get_value('image_proxy'):
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return url
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if url.startswith('data:image/'):
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# 50 is an arbitrary number to get only the beginning of the image.
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partial_base64 = url[len('data:image/') : 50].split(';')
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if (
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len(partial_base64) == 2
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and partial_base64[0] in ['gif', 'png', 'jpeg', 'pjpeg', 'webp', 'tiff', 'bmp']
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and partial_base64[1].startswith('base64,')
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):
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return url
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return None
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if settings['result_proxy']['url']:
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return morty_proxify(url)
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h = new_hmac(settings['server']['secret_key'], url.encode())
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return '{0}?{1}'.format(url_for('image_proxy'), urlencode(dict(url=url.encode(), h=h)))
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def get_translations():
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return {
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# when there is autocompletion
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'no_item_found': gettext('No item found'),
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# /preferences: the source of the engine description (wikipedata, wikidata, website)
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'Source': gettext('Source'),
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# infinite scroll
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'error_loading_next_page': gettext('Error loading the next page'),
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}
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def get_enabled_categories(category_names: Iterable[str]):
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"""The categories in ``category_names```for which there is no active engine
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are filtered out and a reduced list is returned."""
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enabled_engines = [item[0] for item in request.preferences.engines.get_enabled()]
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enabled_categories = set()
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for engine_name in enabled_engines:
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enabled_categories.update(engines[engine_name].categories)
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return [x for x in category_names if x in enabled_categories]
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def get_pretty_url(parsed_url: urllib.parse.ParseResult):
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path = parsed_url.path
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path = path[:-1] if len(path) > 0 and path[-1] == '/' else path
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path = unquote(path.replace("/", " › "))
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return [parsed_url.scheme + "://" + parsed_url.netloc, path]
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def get_client_settings():
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req_pref = request.preferences
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return {
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'autocomplete_provider': req_pref.get_value('autocomplete'),
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'autocomplete_min': get_setting('search.autocomplete_min'),
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'http_method': req_pref.get_value('method'),
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'infinite_scroll': req_pref.get_value('infinite_scroll'),
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'translations': get_translations(),
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'search_on_category_select': req_pref.plugins.choices['searx.plugins.search_on_category_select'],
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'hotkeys': req_pref.plugins.choices['searx.plugins.vim_hotkeys'],
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'theme_static_path': custom_url_for('static', filename='themes/simple'),
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}
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def render(template_name: str, **kwargs):
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# pylint: disable=too-many-statements
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kwargs['client_settings'] = str(
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base64.b64encode(
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bytes(
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json.dumps(get_client_settings()),
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encoding='utf-8',
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)
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),
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encoding='utf-8',
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)
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# values from the HTTP requests
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kwargs['endpoint'] = 'results' if 'q' in kwargs else request.endpoint
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kwargs['cookies'] = request.cookies
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kwargs['errors'] = request.errors
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kwargs['link_token'] = link_token.get_token()
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# values from the preferences
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kwargs['preferences'] = request.preferences
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kwargs['autocomplete'] = request.preferences.get_value('autocomplete')
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kwargs['infinite_scroll'] = request.preferences.get_value('infinite_scroll')
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kwargs['results_on_new_tab'] = request.preferences.get_value('results_on_new_tab')
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kwargs['advanced_search'] = request.preferences.get_value('advanced_search')
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kwargs['query_in_title'] = request.preferences.get_value('query_in_title')
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kwargs['safesearch'] = str(request.preferences.get_value('safesearch'))
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kwargs['theme'] = request.preferences.get_value('theme')
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kwargs['method'] = request.preferences.get_value('method')
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kwargs['categories_as_tabs'] = list(settings['categories_as_tabs'].keys())
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kwargs['categories'] = get_enabled_categories(settings['categories_as_tabs'].keys())
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kwargs['DEFAULT_CATEGORY'] = DEFAULT_CATEGORY
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# i18n
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kwargs['sxng_locales'] = [l for l in sxng_locales if l[0] in settings['search']['languages']]
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locale = request.preferences.get_value('locale')
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kwargs['locale_rfc5646'] = _get_locale_rfc5646(locale)
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if locale in RTL_LOCALES and 'rtl' not in kwargs:
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kwargs['rtl'] = True
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if 'current_language' not in kwargs:
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kwargs['current_language'] = parse_lang(request.preferences, {}, RawTextQuery('', []))
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# values from settings
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kwargs['search_formats'] = [x for x in settings['search']['formats'] if x != 'html']
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kwargs['instance_name'] = get_setting('general.instance_name')
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kwargs['searx_version'] = VERSION_STRING
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kwargs['searx_git_url'] = GIT_URL
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kwargs['enable_metrics'] = get_setting('general.enable_metrics')
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kwargs['get_setting'] = get_setting
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kwargs['get_pretty_url'] = get_pretty_url
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# values from settings: donation_url
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donation_url = get_setting('general.donation_url')
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if donation_url is True:
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donation_url = custom_url_for('info', pagename='donate')
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kwargs['donation_url'] = donation_url
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# helpers to create links to other pages
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kwargs['url_for'] = custom_url_for # override url_for function in templates
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kwargs['image_proxify'] = image_proxify
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kwargs['proxify'] = morty_proxify if settings['result_proxy']['url'] is not None else None
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kwargs['proxify_results'] = settings['result_proxy']['proxify_results']
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kwargs['cache_url'] = settings['ui']['cache_url']
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kwargs['get_result_template'] = get_result_template
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kwargs['doi_resolver'] = get_doi_resolver(request.preferences)
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kwargs['opensearch_url'] = (
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url_for('opensearch')
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+ '?'
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+ urlencode(
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{
|
||
'method': request.preferences.get_value('method'),
|
||
'autocomplete': request.preferences.get_value('autocomplete'),
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}
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)
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)
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kwargs['urlparse'] = urlparse
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# scripts from plugins
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kwargs['scripts'] = set()
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for plugin in request.user_plugins:
|
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for script in plugin.js_dependencies:
|
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kwargs['scripts'].add(script)
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|
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# styles from plugins
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kwargs['styles'] = set()
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for plugin in request.user_plugins:
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for css in plugin.css_dependencies:
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kwargs['styles'].add(css)
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start_time = default_timer()
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result = render_template('{}/{}'.format(kwargs['theme'], template_name), **kwargs)
|
||
request.render_time += default_timer() - start_time # pylint: disable=assigning-non-slot
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||
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
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||
request.timings = [] # pylint: disable=assigning-non-slot
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||
request.errors = [] # pylint: disable=assigning-non-slot
|
||
|
||
client_pref = ClientPref.from_http_request(request)
|
||
# pylint: disable=redefined-outer-name
|
||
preferences = Preferences(themes, list(categories.keys()), engines, plugins, client_pref)
|
||
|
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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
|
||
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||
try:
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||
preferences.parse_dict(request.cookies)
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||
|
||
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('/client<token>.css', methods=['GET', 'POST'])
|
||
def client_token(token=None):
|
||
link_token.ping(request, token)
|
||
return Response('', mimetype='text/css')
|
||
|
||
|
||
@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, _, _, selected_locale = get_search_query_from_webapp(
|
||
request.preferences, request.form
|
||
)
|
||
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
|
||
|
||
# 1. check if the result is a redirect for an external bang
|
||
if result_container.redirect_url:
|
||
return redirect(result_container.redirect_url)
|
||
|
||
# 2. add Server-Timing header for measuring performance characteristics of
|
||
# web applications
|
||
request.timings = result_container.get_timings() # pylint: disable=assigning-non-slot
|
||
|
||
# 3. formats without a template
|
||
|
||
if output_format == 'json':
|
||
|
||
response = webutils.get_json_response(search_query, result_container)
|
||
return Response(response, mimetype='application/json')
|
||
|
||
if output_format == 'csv':
|
||
|
||
csv = webutils.CSVWriter(StringIO())
|
||
webutils.write_csv_response(csv, result_container)
|
||
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
|
||
|
||
# 4. formats rendered by a template / RSS & HTML
|
||
|
||
current_template = None
|
||
previous_result = None
|
||
|
||
results = result_container.get_ordered_results()
|
||
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)
|
||
|
||
if 'url' in result:
|
||
result['pretty_url'] = webutils.prettify_url(result['url'])
|
||
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:
|
||
result['publishedDate'] = webutils.searxng_l10n_timespan(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
|
||
|
||
# 4.a RSS
|
||
|
||
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=result_container.number_of_results,
|
||
)
|
||
return Response(response_rss, mimetype='text/xml')
|
||
|
||
# 4.b HTML
|
||
|
||
# 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,
|
||
)
|
||
)
|
||
|
||
# search_query.lang contains the user choice (all, auto, en, ...)
|
||
# when the user choice is "auto", search.search_query.lang contains the detected language
|
||
# otherwise it is equals to search_query.lang
|
||
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 or '',
|
||
number_of_results = format_decimal(result_container.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 = webutils.get_translated_errors(
|
||
result_container.unresponsive_engines
|
||
),
|
||
current_locale = request.preferences.get_value("locale"),
|
||
current_language = selected_locale,
|
||
search_language = match_locale(
|
||
search.search_query.lang,
|
||
settings['search']['languages'],
|
||
fallback=request.preferences.get_value("language")
|
||
),
|
||
timeout_limit = request.form.get('timeout_limit', None)
|
||
# fmt: on
|
||
)
|
||
|
||
|
||
@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 SearXNG's locale and autocomplete backend from cookie
|
||
sxng_locale = request.preferences.get_value('language')
|
||
backend_name = request.preferences.get_value('autocomplete')
|
||
|
||
for result in search_autocomplete(backend_name, sug_prefix, sxng_locale):
|
||
# 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': e.traits.is_locale_supported(
|
||
str(request.preferences.get_value('language') or 'all')
|
||
),
|
||
'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 = e.traits.is_locale_supported(
|
||
str(request.preferences.get_value('language') or 'all')
|
||
)
|
||
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
|
||
)
|
||
|
||
|
||
@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
|
||
|
||
_languages = engine.traits.languages.keys()
|
||
_engines.append(
|
||
{
|
||
'name': name,
|
||
'categories': engine.categories,
|
||
'shortcut': engine.shortcut,
|
||
'enabled': not engine.disabled,
|
||
'paging': engine.paging,
|
||
'language_support': engine.language_support,
|
||
'languages': list(_languages),
|
||
'regions': list(engine.traits.regions.keys()),
|
||
'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()
|
||
redis_initialize()
|
||
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()
|