#!/usr/bin/env python ''' searx is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. searx is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with searx. If not, see < http://www.gnu.org/licenses/ >. (C) 2013- by Adam Tauber, ''' import sys if sys.version_info[0] < 3: print('\033[1;31m Python2 is no longer supported\033[0m') exit(1) if __name__ == '__main__': from os.path import realpath, dirname sys.path.append(realpath(dirname(realpath(__file__)) + '/../')) import hashlib import hmac import json import os import requests from searx import logger logger = logger.getChild('webapp') from datetime import datetime, timedelta from time import time from html import escape from io import StringIO from urllib.parse import urlencode, urlparse, urljoin, urlsplit from pygments import highlight from pygments.lexers import get_lexer_by_name from pygments.formatters import HtmlFormatter from werkzeug.middleware.proxy_fix import ProxyFix from flask import ( Flask, request, render_template, url_for, Response, make_response, redirect, send_from_directory ) from babel.support import Translations import flask_babel from flask_babel import Babel, gettext, format_date, format_decimal from flask.ctx import has_request_context from flask.json import jsonify from searx import brand, static_path from searx import settings, searx_dir, searx_debug from searx.exceptions import SearxParameterException from searx.engines import ( categories, engines, engine_shortcuts, get_engines_stats, initialize_engines ) from searx.webutils import ( UnicodeWriter, highlight_content, get_resources_directory, 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 from searx.languages import language_codes as languages from searx.search import SearchWithPlugins from searx.query import RawTextQuery from searx.autocomplete import searx_bang, backends as autocomplete_backends 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 # serve pages with HTTP/1.1 from werkzeug.serving import WSGIRequestHandler WSGIRequestHandler.protocol_version = "HTTP/{}".format(settings['server'].get('http_protocol_version', '1.0')) # about static static_path = get_resources_directory(searx_dir, 'static', settings['ui']['static_path']) logger.debug('static directory is %s', static_path) static_files = get_static_files(static_path) # about templates default_theme = settings['ui']['default_theme'] templates_path = get_resources_directory(searx_dir, 'templates', settings['ui']['templates_path']) logger.debug('templates directory is %s', 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(static_path, 'themes', theme, 'img', 'icons') for (dirpath, dirnames, filenames) in os.walk(theme_img_path): global_favicons[indice].extend(filenames) # Flask app app = Flask( __name__, static_folder=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') 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"): initialize_engines(settings['engines']) babel = Babel(app) rtl_locales = ['ar', 'arc', 'bcc', 'bqi', 'ckb', 'dv', 'fa', 'fa_IR', 'glk', 'he', 'ku', 'mzn', 'pnb', 'ps', 'sd', 'ug', 'ur', 'yi'] # 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('science')) outgoing_proxies = settings['outgoing'].get('proxies') or None _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(request, lang_list): for lang in request.headers.get("Accept-Language", "en").split(","): if ';' in lang: lang = lang.split(';')[0] 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, settings['locales'].keys()) locale_source = 'browser' # if locale == 'zh_TW': locale = 'zh_Hant_TW' # 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", 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: # if lexer is not found, using default one logger.debug('highlighter cannot find lexer for {0}'.format(language)) 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) 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) html_code = html_code + highlight(tmp_code, lexer, formatter) return html_code # Extract domain from url @app.template_filter('extract_domain') def extract_domain(url): return urlparse(url)[1] def get_base_url(): if settings['server']['base_url']: hostname = settings['server']['base_url'] else: scheme = 'http' if request.is_secure: scheme = 'https' hostname = url_for('index', _external=True, _scheme=scheme) return hostname 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, template_name): themed_path = theme + '/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) if settings['server']['base_url']: if url.startswith('/'): url = url[1:] url = urljoin(settings['server']['base_url'], url) 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 else: 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 render(template_name, override_theme=None, **kwargs): disabled_engines = request.preferences.engines.get_disabled() enabled_categories = set(category for engine_name in engines for category in engines[engine_name].categories if (engine_name, category) not in disabled_engines) if 'categories' not in kwargs: kwargs['categories'] = [x for x in _get_ordered_categories() if x in enabled_categories] if 'autocomplete' not in kwargs: kwargs['autocomplete'] = request.preferences.get_value('autocomplete') locale = request.preferences.get_value('locale') if locale in rtl_locales and 'rtl' not in kwargs: kwargs['rtl'] = True kwargs['searx_version'] = VERSION_STRING kwargs['method'] = request.preferences.get_value('method') kwargs['safesearch'] = str(request.preferences.get_value('safesearch')) kwargs['language_codes'] = languages if 'current_language' not in kwargs: kwargs['current_language'] = match_language(request.preferences.get_value('language'), LANGUAGE_CODES) # override url_for function in templates kwargs['url_for'] = url_for_theme kwargs['image_proxify'] = image_proxify kwargs['proxify'] = proxify if settings.get('result_proxy', {}).get('url') else None kwargs['opensearch_url'] = url_for('opensearch') + '?' \ + urlencode({'method': kwargs['method'], 'autocomplete': kwargs['autocomplete']}) kwargs['get_result_template'] = get_result_template kwargs['theme'] = get_current_theme_name(override=override_theme) kwargs['template_name'] = template_name kwargs['cookies'] = request.cookies kwargs['errors'] = request.errors kwargs['instance_name'] = settings['general']['instance_name'] kwargs['results_on_new_tab'] = request.preferences.get_value('results_on_new_tab') kwargs['preferences'] = request.preferences kwargs['brand'] = brand kwargs['scripts'] = set() kwargs['endpoint'] = 'results' if 'q' in kwargs else request.endpoint for plugin in request.user_plugins: for script in plugin.js_dependencies: kwargs['scripts'].add(script) kwargs['styles'] = set() for plugin in request.user_plugins: for css in plugin.css_dependencies: kwargs['styles'].add(css) return render_template( '{}/{}'.format(kwargs['theme'], template_name), **kwargs) def _get_ordered_categories(): ordered_categories = [] if 'categories_order' not in settings['ui']: ordered_categories = ['general'] ordered_categories.extend(x for x in sorted(categories.keys()) if x != 'general') return ordered_categories ordered_categories = settings['ui']['categories_order'] ordered_categories.extend(x for x in sorted(categories.keys()) if x not in ordered_categories) return ordered_categories @app.before_request def pre_request(): request.start_time = time() request.timings = [] request.errors = [] preferences = Preferences(themes, list(categories.keys()), engines, plugins) 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 try: preferences.parse_dict(request.cookies) except: request.errors.append(gettext('Invalid settings, please edit your preferences')) # merge GET, POST vars # request.form request.form = dict(request.form.items()) 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: logger.exception('invalid settings') 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 = [] 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 post_request(response): total_time = time() - request.start_time timings_all = ['total;dur=' + str(round(total_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)] 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') elif output_format == 'csv': response = Response('', mimetype='application/csv') cont_disp = 'attachment;Filename=searx.csv' response.headers.add('Content-Disposition', cont_disp) return response elif 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, base_url=get_base_url(), error_message=error_message, override_theme='__common__', ) return Response(response_rss, mimetype='text/xml') else: # html request.errors.append(gettext('search error')) return render( 'index.html', selected_categories=get_selected_categories(request.preferences, request.form), ) @app.route('/search', methods=['GET', 'POST']) @app.route('/', methods=['GET', 'POST']) def index(): """Render index page. Supported outputs: html, json, csv, rss. """ # output_format output_format = request.form.get('format', 'html') if output_format not in ['html', 'csv', 'json', 'rss']: output_format = 'html' # check if there is query if request.form.get('q') is None: if output_format == 'html': return render( 'index.html', selected_categories=get_selected_categories(request.preferences, request.form), ) else: 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) result_container = search.search() except Exception as e: # log exception logger.exception('search error') # is it an invalid input parameter or something else ? if (issubclass(e.__class__, SearxParameterException)): return index_error(output_format, e.message), 400 else: 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) # UI advanced_search = request.form.get('advanced_search', None) # Server-Timing header request.timings = result_container.get_timings() # 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 if 'publishedDate' in result: 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) # noqa else: result['publishedDate'] = format_date(result['publishedDate']) if output_format == 'json': return Response(json.dumps({'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)}, # noqa default=lambda item: list(item) if isinstance(item, set) else item), mimetype='application/json') elif 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 elif 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, base_url=get_base_url(), 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), advanced_search=advanced_search, suggestions=suggestion_urls, answers=result_container.answers, corrections=correction_urls, infoboxes=result_container.infoboxes, 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")), base_url=get_base_url(), 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 = [] for unresponsive_engine in unresponsive_engines: error_msg = gettext(unresponsive_engine[1]) if unresponsive_engine[2]: error_msg = "{} {}".format(error_msg, unresponsive_engine[2]) translated_errors.append((unresponsive_engine[0], error_msg)) return translated_errors @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""" # set blocked engines disabled_engines = request.preferences.engines.get_disabled() # parse query raw_text_query = RawTextQuery(request.form.get('q', ''), disabled_engines) # check if search query is set if not raw_text_query.getQuery(): return '', 400 # run autocompleter completer = autocomplete_backends.get(request.preferences.get_value('autocomplete')) # parse searx specific autocompleter results like !bang raw_results = searx_bang(raw_text_query) # normal autocompletion results only appear if no inner results returned # and there is a query part besides the engine and language bangs if len(raw_results) == 0 and completer and (len(raw_text_query.query_parts) > 1 or (len(raw_text_query.languages) == 0 and not raw_text_query.specific)): # 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.extend(completer(raw_text_query.getQuery(), language)) # parse results (write :language and !engine back to result string) results = [] for result in raw_results: raw_text_query.changeQuery(result) # add parsed result results.append(raw_text_query.getFullQuery()) # return autocompleter results if request.headers.get('X-Requested-With') == 'XMLHttpRequest': return Response(json.dumps(results), mimetype='application/json') return Response(json.dumps([raw_text_query.query, results]), mimetype='application/x-suggestions+json') @app.route('/preferences', methods=['GET', 'POST']) def preferences(): """Render preferences page && save user preferences""" # save preferences if request.method == 'POST': resp = make_response(redirect(urljoin(settings['server']['base_url'], url_for('index')))) 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') lang = request.preferences.get_value('language') disabled_engines = request.preferences.engines.get_disabled() allowed_plugins = request.preferences.plugins.get_enabled() # stats for preferences page stats = {} engines_by_category = {} for c in categories: engines_by_category[c] = [] for e in categories[c]: if not request.preferences.validate_token(e): continue stats[e.name] = {'time': None, 'warn_timeout': False, 'warn_time': False} if e.timeout > settings['outgoing']['request_timeout']: stats[e.name]['warn_timeout'] = True stats[e.name]['supports_selected_language'] = _is_selected_language_supported(e, request.preferences) engines_by_category[c].append(e) # get first element [0], the engine time, # and then the second element [1] : the time (the first one is the label) for engine_stat in get_engines_stats(request.preferences)[0][1]: stats[engine_stat.get('name')]['time'] = round(engine_stat.get('avg'), 3) if engine_stat.get('avg') > settings['outgoing']['request_timeout']: stats[engine_stat.get('name')]['warn_time'] = True # end of stats return render('preferences.html', selected_categories=get_selected_categories(request.preferences, request.form), all_categories=_get_ordered_categories(), locales=settings['locales'], current_locale=request.preferences.get_value("locale"), image_proxy=image_proxy, engines_by_category=engines_by_category, stats=stats, 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(), base_url=get_base_url(), preferences=True) def _is_selected_language_supported(engine, preferences): language = preferences.get_value('language') return (language == 'all' or match_language(language, getattr(engine, 'supported_languages', []), getattr(engine, 'language_aliases', {}), None)) @app.route('/image_proxy', methods=['GET']) def image_proxy(): url = request.args.get('url').encode() if not url: return '', 400 h = new_hmac(settings['server']['secret_key'], url) if h != request.args.get('h'): return '', 400 headers = dict_subset(request.headers, {'If-Modified-Since', 'If-None-Match'}) headers['User-Agent'] = gen_useragent() resp = requests.get(url, stream=True, timeout=settings['outgoing']['request_timeout'], headers=headers, proxies=outgoing_proxies) 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 img = b'' chunk_counter = 0 for chunk in resp.iter_content(1024 * 1024): chunk_counter += 1 if chunk_counter > 5: return '', 502 # Bad gateway - file is too big (>5M) img += chunk headers = dict_subset(resp.headers, {'Content-Length', 'Length', 'Date', 'Last-Modified', 'Expires', 'Etag'}) return Response(img, mimetype=resp.headers['content-type'], headers=headers) @app.route('/stats', methods=['GET']) def stats(): """Render engine statistics page.""" stats = get_engines_stats(request.preferences) return render( 'stats.html', stats=stats, ) @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, host=get_base_url(), urljoin=urljoin, 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, 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(urljoin(settings['server']['base_url'], url_for('index')))) 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': { 'GIT_URL': brand.GIT_URL, 'DOCS_URL': brand.DOCS_URL }, 'doi_resolvers': [r for r in settings['doi_resolvers']], 'default_doi_resolver': settings['default_doi_resolver'], }) @app.route('/translations.js') def js_translations(): return render( 'translations.js.tpl', override_theme='__common__', ), {'Content-Type': 'text/javascript; charset=UTF-8'} @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 ) class ReverseProxyPathFix: '''Wrap the application in this middleware and configure the front-end server to add these headers, to let you quietly bind this to a URL other than / and to an HTTP scheme that is different than what is used locally. http://flask.pocoo.org/snippets/35/ In nginx: location /myprefix { proxy_pass http://127.0.0.1:8000; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Scheme $scheme; proxy_set_header X-Script-Name /myprefix; } :param app: the WSGI application ''' def __init__(self, app): self.app = app def __call__(self, environ, start_response): script_name = environ.get('HTTP_X_SCRIPT_NAME', '') if script_name: environ['SCRIPT_NAME'] = script_name path_info = environ['PATH_INFO'] if path_info.startswith(script_name): environ['PATH_INFO'] = path_info[len(script_name):] scheme = environ.get('HTTP_X_SCHEME', '') if scheme: environ['wsgi.url_scheme'] = scheme return self.app(environ, start_response) application = app # patch app to handle non root url-s behind proxy & wsgi app.wsgi_app = ReverseProxyPathFix(ProxyFix(application.wsgi_app)) if __name__ == "__main__": run()