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mirror of https://github.com/searxng/searxng.git synced 2024-11-08 22:30:09 +01:00
searxng/searx/webapp.py
Alexandre Flament 4b43775c91 version based on the git repository
This commit remove the need to update the brand for GIT_URL and GIT_BRANCH:
there are read from the git repository.

It is possible to call python -m searx.version freeze to freeze the current version.
Useful when the code is installed outside git (distro package, docker, etc...)
2021-07-30 14:40:09 +02:00

1361 lines
47 KiB
Python
Executable File

#!/usr/bin/env python
# SPDX-License-Identifier: AGPL-3.0-or-later
# lint: pylint
# pylint: disable=missing-function-docstring
"""WebbApp
"""
import hashlib
import hmac
import json
import os
import sys
from datetime import datetime, timedelta
from timeit import default_timer
from html import escape
from io import StringIO
import urllib
from urllib.parse import urlencode
import httpx
from pygments import highlight
from pygments.lexers import get_lexer_by_name
from pygments.formatters import HtmlFormatter # pylint: disable=no-name-in-module
import flask
from flask import (
Flask,
request,
render_template,
url_for,
Response,
make_response,
redirect,
send_from_directory,
)
from flask.ctx import has_request_context
from flask.json import jsonify
from babel.support import Translations
import flask_babel
from flask_babel import (
Babel,
gettext,
format_date,
format_decimal,
)
from searx import logger
from searx import get_setting
from searx import (
settings,
searx_debug,
)
from searx.settings_defaults import OUTPUT_FORMATS
from searx.exceptions import SearxParameterException
from searx.engines import (
categories,
engines,
engine_shortcuts,
)
from searx.webutils import (
UnicodeWriter,
highlight_content,
get_static_files,
get_result_templates,
get_themes,
prettify_url,
new_hmac,
is_flask_run_cmdline,
)
from searx.webadapter import (
get_search_query_from_webapp,
get_selected_categories,
)
from searx.utils import (
html_to_text,
gen_useragent,
dict_subset,
match_language,
)
from searx.version import VERSION_STRING, GIT_URL
from searx.query import RawTextQuery
from searx.plugins import plugins
from searx.plugins.oa_doi_rewrite import get_doi_resolver
from searx.preferences import (
Preferences,
ValidationException,
LANGUAGE_CODES,
)
from searx.answerers import answerers
from searx.answerers import ask
from searx.metrics import (
get_engines_stats,
get_engine_errors,
get_reliabilities,
histogram,
counter,
)
from searx.flaskfix import patch_application
# renaming names from searx imports ...
from searx.autocomplete import search_autocomplete, backends as autocomplete_backends
from searx.languages import language_codes as languages
from searx.search import SearchWithPlugins, initialize as search_initialize
from searx.network import stream as http_stream
from searx.search.checker import get_result as checker_get_result
from searx.settings_loader import get_default_settings_path
logger = logger.getChild('webapp')
# check secret_key
if not searx_debug and settings['server']['secret_key'] == 'ultrasecretkey':
logger.error('server.secret_key is not changed. Please use something else instead of ultrasecretkey.')
sys.exit(1)
# about static
logger.debug('static directory is %s', settings['ui']['static_path'])
static_files = get_static_files(settings['ui']['static_path'])
# about templates
logger.debug('templates directory is %s', settings['ui']['templates_path'])
default_theme = settings['ui']['default_theme']
templates_path = settings['ui']['templates_path']
themes = get_themes(templates_path)
result_templates = get_result_templates(templates_path)
global_favicons = []
for indice, theme in enumerate(themes):
global_favicons.append([])
theme_img_path = os.path.join(settings['ui']['static_path'], 'themes', theme, 'img', 'icons')
for (dirpath, dirnames, filenames) in os.walk(theme_img_path):
global_favicons[indice].extend(filenames)
STATS_SORT_PARAMETERS = {
'name': (False, 'name', ''),
'score': (True, 'score', 0),
'result_count': (True, 'result_count', 0),
'time': (False, 'total', 0),
'reliability': (False, 'reliability', 100),
}
# Flask app
app = Flask(
__name__,
static_folder=settings['ui']['static_path'],
template_folder=templates_path
)
app.jinja_env.trim_blocks = True
app.jinja_env.lstrip_blocks = True
app.jinja_env.add_extension('jinja2.ext.loopcontrols') # pylint: disable=no-member
app.secret_key = settings['server']['secret_key']
# 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") ):
search_initialize(enable_checker=True)
babel = Babel(app)
rtl_locales = [
'ar', 'arc', 'bcc', 'bqi', 'ckb', 'dv', 'fa', 'fa_IR', 'glk', 'he',
'ku', 'mzn', 'pnb', 'ps', 'sd', 'ug', 'ur', 'yi'
]
ui_locale_codes = [l.replace('_', '-') for l in settings['locales'].keys()]
# used when translating category names
_category_names = (
gettext('files'),
gettext('general'),
gettext('music'),
gettext('social media'),
gettext('images'),
gettext('videos'),
gettext('it'),
gettext('news'),
gettext('map'),
gettext('onions'),
gettext('science')
)
#
timeout_text = gettext('timeout')
parsing_error_text = gettext('parsing error')
http_protocol_error_text = gettext('HTTP protocol error')
network_error_text = gettext('network error')
exception_classname_to_text = {
None: gettext('unexpected crash'),
'timeout': timeout_text,
'asyncio.TimeoutError': timeout_text,
'httpx.TimeoutException': timeout_text,
'httpx.ConnectTimeout': timeout_text,
'httpx.ReadTimeout': timeout_text,
'httpx.WriteTimeout': timeout_text,
'httpx.HTTPStatusError': gettext('HTTP error'),
'httpx.ConnectError': gettext("HTTP connection error"),
'httpx.RemoteProtocolError': http_protocol_error_text,
'httpx.LocalProtocolError': http_protocol_error_text,
'httpx.ProtocolError': http_protocol_error_text,
'httpx.ReadError': network_error_text,
'httpx.WriteError': network_error_text,
'httpx.ProxyError': gettext("proxy error"),
'searx.exceptions.SearxEngineCaptchaException': gettext("CAPTCHA"),
'searx.exceptions.SearxEngineTooManyRequestsException': gettext("too many requests"),
'searx.exceptions.SearxEngineAccessDeniedException': gettext("access denied"),
'searx.exceptions.SearxEngineAPIException': gettext("server API error"),
'searx.exceptions.SearxEngineXPathException': parsing_error_text,
'KeyError': parsing_error_text,
'json.decoder.JSONDecodeError': parsing_error_text,
'lxml.etree.ParserError': parsing_error_text,
}
_flask_babel_get_translations = flask_babel.get_translations
# monkey patch for flask_babel.get_translations
def _get_translations():
if has_request_context() and request.form.get('use-translation') == 'oc':
babel_ext = flask_babel.current_app.extensions['babel']
return Translations.load(next(babel_ext.translation_directories), 'oc')
return _flask_babel_get_translations()
flask_babel.get_translations = _get_translations
def _get_browser_or_settings_language(req, lang_list):
for lang in req.headers.get("Accept-Language", "en").split(","):
if ';' in lang:
lang = lang.split(';')[0]
if '-' in lang:
lang_parts = lang.split('-')
lang = "{}-{}".format(lang_parts[0], lang_parts[-1].upper())
locale = match_language(lang, lang_list, fallback=None)
if locale is not None:
return locale
return settings['search']['default_lang'] or 'en'
@babel.localeselector
def get_locale():
if 'locale' in request.form\
and request.form['locale'] in settings['locales']:
# use locale from the form
locale = request.form['locale']
locale_source = 'form'
elif request.preferences.get_value('locale') != '':
# use locale from the preferences
locale = request.preferences.get_value('locale')
locale_source = 'preferences'
else:
# use local from the browser
locale = _get_browser_or_settings_language(request, ui_locale_codes)
locale = locale.replace('-', '_')
locale_source = 'browser'
# see _get_translations function
# and https://github.com/searx/searx/pull/1863
if locale == 'oc':
request.form['use-translation'] = 'oc'
locale = 'fr_FR'
logger.debug(
"%s uses locale `%s` from %s", urllib.parse.quote(request.url), locale, locale_source
)
return locale
# code-highlighter
@app.template_filter('code_highlighter')
def code_highlighter(codelines, language=None):
if not language:
language = 'text'
try:
# find lexer by programing language
lexer = get_lexer_by_name(language, stripall=True)
except Exception as e: # pylint: disable=broad-except
logger.exception(e, exc_info=True)
# if lexer is not found, using default one
lexer = get_lexer_by_name('text', stripall=True)
html_code = ''
tmp_code = ''
last_line = None
# parse lines
for line, code in codelines:
if not last_line:
line_code_start = line
# new codeblock is detected
if last_line is not None and\
last_line + 1 != line:
# highlight last codepart
formatter = HtmlFormatter(
linenos='inline', linenostart=line_code_start, cssclass="code-highlight"
)
html_code = html_code + highlight(tmp_code, lexer, formatter)
# reset conditions for next codepart
tmp_code = ''
line_code_start = line
# add codepart
tmp_code += code + '\n'
# update line
last_line = line
# highlight last codepart
formatter = HtmlFormatter(linenos='inline', linenostart=line_code_start, cssclass="code-highlight")
html_code = html_code + highlight(tmp_code, lexer, formatter)
return html_code
def get_current_theme_name(override=None):
"""Returns theme name.
Checks in this order:
1. override
2. cookies
3. settings"""
if override and (override in themes or override == '__common__'):
return override
theme_name = request.args.get('theme', request.preferences.get_value('theme'))
if theme_name not in themes:
theme_name = default_theme
return theme_name
def get_result_template(theme_name, template_name):
themed_path = theme_name + '/result_templates/' + template_name
if themed_path in result_templates:
return themed_path
return 'result_templates/' + template_name
def url_for_theme(endpoint, override_theme=None, **values):
if endpoint == 'static' and values.get('filename'):
theme_name = get_current_theme_name(override=override_theme)
filename_with_theme = "themes/{}/{}".format(theme_name, values['filename'])
if filename_with_theme in static_files:
values['filename'] = filename_with_theme
url = url_for(endpoint, **values)
return url
def proxify(url):
if url.startswith('//'):
url = 'https:' + url
if not settings.get('result_proxy'):
return url
url_params = dict(mortyurl=url.encode())
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):
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')
}
def _get_ordered_categories():
ordered_categories = list(settings['ui']['categories_order'])
ordered_categories.extend(x for x in sorted(categories.keys()) if x not in ordered_categories)
return ordered_categories
def _get_enable_categories(all_categories):
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 render(template_name, override_theme=None, **kwargs):
# 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['method'] = request.preferences.get_value('method')
kwargs['autocomplete'] = request.preferences.get_value('autocomplete')
kwargs['results_on_new_tab'] = request.preferences.get_value('results_on_new_tab')
kwargs['advanced_search'] = request.preferences.get_value('advanced_search')
kwargs['safesearch'] = str(request.preferences.get_value('safesearch'))
kwargs['theme'] = get_current_theme_name(override=override_theme)
kwargs['all_categories'] = _get_ordered_categories()
kwargs['categories'] = _get_enable_categories(kwargs['all_categories'])
# i18n
kwargs['language_codes'] = languages # from searx.languages
kwargs['translations'] = json.dumps(get_translations(), separators=(',', ':'))
locale = request.preferences.get_value('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'), LANGUAGE_CODES )
# 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
# helpers to create links to other pages
kwargs['url_for'] = url_for_theme # 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': kwargs['method'], 'autocomplete': kwargs['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'))
# init search language and locale
if not preferences.get_value("language"):
preferences.parse_dict({"language": _get_browser_or_settings_language(request, LANGUAGE_CODES)})
if not preferences.get_value("locale"):
preferences.parse_dict({"locale": get_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):
# 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):
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 v: v['total'])
timings_total = [
'total_' + str(i) + '_' + v['engine'] + ';dur=' + str(round(v['total'] * 1000, 3))
for i, v in enumerate(timings)
]
timings_load = [
'load_' + str(i) + '_' + v['engine'] + ';dur=' + str(round(v['load'] * 1000, 3))
for i, v in enumerate(timings) if v.get('load')
]
timings_all = timings_all + timings_total + timings_load
response.headers.add('Server-Timing', ', '.join(timings_all))
return response
def index_error(output_format, error_message):
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,
override_theme='__common__',
)
return Response(response_rss, mimetype='text/xml')
# html
request.errors.append(gettext('search error'))
return render(
'index.html',
selected_categories=get_selected_categories(request.preferences, request.form),
)
@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(
'index.html',
selected_categories=get_selected_categories(request.preferences, request.form),
)
@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(
'index.html',
selected_categories=get_selected_categories(request.preferences, request.form),
)
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
# 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'])
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,
override_theme='__common__',
)
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(
'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_language = match_language(
search_query.lang,
LANGUAGE_CODES,
fallback=request.preferences.get_value("language")
),
theme = get_current_theme_name(),
favicons = global_favicons[themes.index(get_current_theme_name())],
timeout_limit = request.form.get('timeout_limit', None)
)
def __get_translated_errors(unresponsive_engines):
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 list(unresponsive_engines):
error_user_text = exception_classname_to_text.get(unresponsive_engine[1])
if not error_user_text:
error_user_text = exception_classname_to_text[None]
error_msg = gettext(error_user_text)
if unresponsive_engine[2]:
error_msg = "{} {}".format(error_msg, unresponsive_engine[2])
if unresponsive_engine[3]:
error_msg = gettext('Suspended') + ': ' + error_msg
translated_errors.append((unresponsive_engine[0], error_msg))
return sorted(translated_errors, key=lambda e: e[0])
@app.route('/about', methods=['GET'])
def about():
"""Render about page"""
return render('about.html')
@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)
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'
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
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: (kv[0], 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:
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(
'preferences.html',
selected_categories = get_selected_categories(request.preferences, request.form),
locales = settings['locales'],
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.args, request.preferences.get_value('doi_resolver')
),
allowed_plugins = allowed_plugins,
theme = get_current_theme_name(),
preferences_url_params = request.preferences.get_as_url_params(),
locked_preferences = settings['preferences']['lock'],
preferences = True
)
def _is_selected_language_supported(engine, 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
url = request.args.get('url')
if not url:
return '', 400
h = new_hmac(settings['server']['secret_key'], url.encode())
if h != request.args.get('h'):
return '', 400
maximum_size = 5 * 1024 * 1024
try:
headers = dict_subset(request.headers, {'If-Modified-Since', 'If-None-Match'})
headers['User-Agent'] = gen_useragent()
stream = http_stream(
method = 'GET',
url = url,
headers = headers,
timeout = settings['outgoing']['request_timeout'],
allow_redirects = True,
max_redirects = 20
)
resp = next(stream)
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 == 304:
return '', resp.status_code
if resp.status_code != 200:
logger.debug(
'image-proxy: wrong response code: {0}'.format(
resp.status_code))
if resp.status_code >= 400:
return '', resp.status_code
return '', 400
if not resp.headers.get('content-type', '').startswith('image/'):
logger.debug(
'image-proxy: wrong content-type: {0}'.format(
resp.headers.get('content-type')))
return '', 400
headers = dict_subset(
resp.headers,
{'Content-Length', 'Length', 'Date', 'Last-Modified', 'Expires', 'Etag'}
)
total_length = 0
def forward_chunk():
nonlocal total_length
for chunk in stream:
total_length += len(chunk)
if total_length > maximum_size:
break
yield chunk
return Response(forward_chunk(), mimetype=resp.headers['Content-Type'], headers=headers)
except httpx.HTTPError:
return '', 400
@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: (kv[0], 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(
'stats.html',
sort_order = sort_order,
engine_stats = engine_stats,
engine_reliabilities = engine_reliabilities,
selected_engine_name = selected_engine_name,
)
@app.route('/stats/errors', methods=['GET'])
def stats_errors():
filtered_engines = dict(
filter(
lambda kv: (kv[0], 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: /
Allow: /about
Disallow: /stats
Disallow: /preferences
Disallow: /*?*q=*
""", mimetype='text/plain')
@app.route('/opensearch.xml', methods=['GET'])
def opensearch():
method = 'post'
if request.preferences.get_value('method') == 'GET':
method = 'get'
# chrome/chromium only supports HTTP GET....
if request.headers.get('User-Agent', '').lower().find('webkit') >= 0:
method = 'get'
ret = render(
'opensearch.xml',
opensearch_method=method,
override_theme='__common__'
)
resp = Response(
response = ret,
status = 200,
mimetype = "application/opensearchdescription+xml"
)
return resp
@app.route('/favicon.ico')
def favicon():
return send_from_directory(
os.path.join(
app.root_path,
settings['ui']['static_path'],
'themes',
get_current_theme_name(),
'img'
),
'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': settings['locales'],
'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': {
'CONTACT_URL': get_setting('general.contact_url'),
'GIT_URL': GIT_URL,
'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
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()