[pylint] webapp.py - fix all messages from pylint
No functional change, just some linting.
- fix messages from pylint (see below)
- log where general Exceptions are catched (broad-except)
- normalized various indentation
- To avoid clashes with common names, add prefix 'route_' to all @app.route
  decorated functions.
Fixed messages::
    searx/webapp.py:744:0: C0301: Line too long (146/120) (line-too-long)
    searx/webapp.py:756:0: C0301: Line too long (132/120) (line-too-long)
    searx/webapp.py:730:9: W0511: TODO, check if timezone is calculated right (fixme)
    searx/webapp.py:1:0: C0114: Missing module docstring (missing-module-docstring)
    searx/webapp.py:126:8: I1101: Module 'setproctitle' has no 'setthreadtitle' member, but source is unavailable. Consider adding this module to extension-pkg-allow-list if you want to perform analysis based on run-time introspection of living objects. (c-extension-no-member)
    searx/webapp.py:126:36: W0212: Access to a protected member _name of a client class (protected-access)
    searx/webapp.py:131:4: R1722: Consider using sys.exit() (consider-using-sys-exit)
    searx/webapp.py:141:4: R1722: Consider using sys.exit() (consider-using-sys-exit)
    searx/webapp.py:255:38: W0621: Redefining name 'request' from outer scope (line 32) (redefined-outer-name)
    searx/webapp.py:307:4: W0702: No exception type(s) specified (bare-except)
    searx/webapp.py:374:24: W0621: Redefining name 'theme' from outer scope (line 155) (redefined-outer-name)
    searx/webapp.py:420:8: R1705: Unnecessary "else" after "return" (no-else-return)
    searx/webapp.py:544:4: W0621: Redefining name 'preferences' from outer scope (line 917) (redefined-outer-name)
    searx/webapp.py:551:4: W0702: No exception type(s) specified (bare-except)
    searx/webapp.py:566:15: W0703: Catching too general exception Exception (broad-except)
    searx/webapp.py:613:4: R1705: Unnecessary "elif" after "return" (no-else-return)
    searx/webapp.py:690:8: W0621: Redefining name 'search' from outer scope (line 661) (redefined-outer-name)
    searx/webapp.py:661:0: R0914: Too many local variables (22/20) (too-many-locals)
    searx/webapp.py:674:8: R1705: Unnecessary "else" after "return" (no-else-return)
    searx/webapp.py:697:11: W0703: Catching too general exception Exception (broad-except)
    searx/webapp.py:748:4: R1705: Unnecessary "elif" after "return" (no-else-return)
    searx/webapp.py:661:0: R0911: Too many return statements (9/6) (too-many-return-statements)
    searx/webapp.py:661:0: R0912: Too many branches (29/12) (too-many-branches)
    searx/webapp.py:661:0: R0915: Too many statements (74/50) (too-many-statements)
    searx/webapp.py:931:4: W0621: Redefining name 'image_proxy' from outer scope (line 1072) (redefined-outer-name)
    searx/webapp.py:946:4: W0621: Redefining name 'stats' from outer scope (line 1132) (redefined-outer-name)
    searx/webapp.py:917:0: R0914: Too many local variables (34/20) (too-many-locals)
    searx/webapp.py:917:0: R0912: Too many branches (19/12) (too-many-branches)
    searx/webapp.py:917:0: R0915: Too many statements (65/50) (too-many-statements)
    searx/webapp.py:1063:44: W0621: Redefining name 'preferences' from outer scope (line 917) (redefined-outer-name)
    searx/webapp.py:1072:0: R0911: Too many return statements (9/6) (too-many-return-statements)
    searx/webapp.py:1151:4: C0103: Variable name "SORT_PARAMETERS" doesn't conform to '(([a-z][a-zA-Z0-9_]{2,30})|(_[a-z0-9_]*)|([a-z]))$' pattern (invalid-name)
    searx/webapp.py:1297:0: R1721: Unnecessary use of a comprehension (unnecessary-comprehension)
    searx/webapp.py:1303:0: C0103: Argument name "e" doesn't conform to '(([a-z][a-zA-Z0-9_]{2,30})|(_[a-z0-9_]*))$' pattern (invalid-name)
    searx/webapp.py:1303:19: W0613: Unused argument 'e' (unused-argument)
    searx/webapp.py:1338:23: W0621: Redefining name 'app' from outer scope (line 162) (redefined-outer-name)
    searx/webapp.py:1318:0: R0903: Too few public methods (1/2) (too-few-public-methods)
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
			
			
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							| @ -2,7 +2,9 @@ | ||||
| # SPDX-License-Identifier: AGPL-3.0-or-later | ||||
| # lint: pylint | ||||
| # pylint: disable=missing-function-docstring | ||||
| """WebbApp | ||||
| 
 | ||||
| """ | ||||
| import hashlib | ||||
| import hmac | ||||
| import json | ||||
| @ -122,13 +124,14 @@ else: | ||||
|     old_thread_init = threading.Thread.__init__ | ||||
| 
 | ||||
|     def new_thread_init(self, *args, **kwargs): | ||||
|         # pylint: disable=protected-access, disable=c-extension-no-member | ||||
|         old_thread_init(self, *args, **kwargs) | ||||
|         setproctitle.setthreadtitle(self._name) | ||||
|     threading.Thread.__init__ = new_thread_init | ||||
| 
 | ||||
| if sys.version_info[0] < 3: | ||||
|     print('\033[1;31m Python2 is no longer supported\033[0m') | ||||
|     exit(1) | ||||
|     sys.exit(1) | ||||
| 
 | ||||
| logger = logger.getChild('webapp') | ||||
| 
 | ||||
| @ -138,7 +141,7 @@ WSGIRequestHandler.protocol_version = "HTTP/{}".format(settings['server'].get('h | ||||
| # 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.') | ||||
|     exit(1) | ||||
|     sys.exit(1) | ||||
| 
 | ||||
| # about static | ||||
| static_path = get_resources_directory(searx_dir, 'static', settings['ui']['static_path']) | ||||
| @ -158,6 +161,14 @@ for indice, theme in enumerate(themes): | ||||
|     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__, | ||||
| @ -252,8 +263,8 @@ def _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(","): | ||||
| 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: | ||||
| @ -304,9 +315,10 @@ def code_highlighter(codelines, language=None): | ||||
|     try: | ||||
|         # find lexer by programing language | ||||
|         lexer = get_lexer_by_name(language, stripall=True) | ||||
|     except: | ||||
| 
 | ||||
|     except Exception as e:  # pylint: disable=broad-except | ||||
|         logger.exception(e, exc_info=True) | ||||
|         # 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 = '' | ||||
| @ -371,8 +383,8 @@ def get_current_theme_name(override=None): | ||||
|     return theme_name | ||||
| 
 | ||||
| 
 | ||||
| def get_result_template(theme, template_name): | ||||
|     themed_path = theme + '/result_templates/' + template_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 | ||||
| @ -421,7 +433,6 @@ def image_proxify(url): | ||||
|            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'): | ||||
| @ -541,14 +552,17 @@ def pre_request(): | ||||
|     request.timings = []  # pylint: disable=assigning-non-slot | ||||
|     request.errors = []  # pylint: disable=assigning-non-slot | ||||
| 
 | ||||
|     preferences = Preferences(themes, list(categories.keys()), engines, plugins) | ||||
|     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: | ||||
| 
 | ||||
|     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 | ||||
| @ -563,8 +577,8 @@ def pre_request(): | ||||
|     else: | ||||
|         try: | ||||
|             preferences.parse_dict(request.form) | ||||
|         except Exception: | ||||
|             logger.exception('invalid settings') | ||||
|         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 | ||||
| @ -613,12 +627,13 @@ 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': | ||||
|     if 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': | ||||
| 
 | ||||
|     if output_format == 'rss': | ||||
|         response_rss = render( | ||||
|             'opensearch_response_rss.xml', | ||||
|             results=[], | ||||
| @ -629,7 +644,7 @@ def index_error(output_format, error_message): | ||||
|             override_theme='__common__', | ||||
|         ) | ||||
|         return Response(response_rss, mimetype='text/xml') | ||||
|     else: | ||||
| 
 | ||||
|     # html | ||||
|     request.errors.append(gettext('search error')) | ||||
|     return render( | ||||
| @ -663,6 +678,8 @@ def search(): | ||||
| 
 | ||||
|     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') | ||||
| @ -677,7 +694,6 @@ def search(): | ||||
|                 advanced_search=request.preferences.get_value('advanced_search'), | ||||
|                 selected_categories=get_selected_categories(request.preferences, request.form), | ||||
|             ) | ||||
|         else: | ||||
|         return index_error(output_format, 'No query'), 400 | ||||
| 
 | ||||
|     # search | ||||
| @ -687,15 +703,15 @@ def search(): | ||||
|     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) | ||||
|         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: | ||||
|         logger.exception('search error') | ||||
|     except Exception as e:  # pylint: disable=broad-except | ||||
|         logger.exception(e, exc_info=True) | ||||
|         return index_error(output_format, gettext('search error')), 500 | ||||
| 
 | ||||
|     # results | ||||
| @ -727,7 +743,7 @@ def search(): | ||||
|         if 'url' in result: | ||||
|             result['pretty_url'] = prettify_url(result['url']) | ||||
| 
 | ||||
|         # TODO, check if timezone is calculated right | ||||
|         # 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') | ||||
| @ -741,22 +757,32 @@ def search(): | ||||
|                     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 | ||||
|                         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': | ||||
|         return Response(json.dumps({'query': search_query.query, | ||||
|         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': | ||||
|                     'unresponsive_engines': __get_translated_errors(result_container.unresponsive_engines) | ||||
|                 }, | ||||
|                 default = lambda item: list(item) if isinstance(item, set) else item | ||||
|             ), | ||||
|             mimetype='application/json' | ||||
|         ) | ||||
| 
 | ||||
|     if output_format == 'csv': | ||||
|         csv = UnicodeWriter(StringIO()) | ||||
|         keys = ('title', 'url', 'content', 'host', 'engine', 'score', 'type') | ||||
|         csv.writerow(keys) | ||||
| @ -779,7 +805,7 @@ def search(): | ||||
|         response.headers.add('Content-Disposition', cont_disp) | ||||
|         return response | ||||
| 
 | ||||
|     elif output_format == 'rss': | ||||
|     if output_format == 'rss': | ||||
|         response_rss = render( | ||||
|             'opensearch_response_rss.xml', | ||||
|             results=results, | ||||
| @ -917,6 +943,9 @@ def autocompleter(): | ||||
| 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))) | ||||
| @ -928,7 +957,7 @@ def preferences(): | ||||
|         return request.preferences.save(resp) | ||||
| 
 | ||||
|     # render preferences | ||||
|     image_proxy = request.preferences.get_value('image_proxy') | ||||
|     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() | ||||
| 
 | ||||
| @ -943,7 +972,7 @@ def preferences(): | ||||
| 
 | ||||
|     # get first element [0], the engine time, | ||||
|     # and then the second element [1] : the time (the first one is the label) | ||||
|     stats = {} | ||||
|     stats = {}  # pylint: disable=redefined-outer-name | ||||
|     max_rate95 = 0 | ||||
|     for _, e in filtered_engines.items(): | ||||
|         h = histogram('engine', e.name, 'time', 'total') | ||||
| @ -1060,7 +1089,7 @@ def preferences(): | ||||
|                   preferences=True) | ||||
| 
 | ||||
| 
 | ||||
| def _is_selected_language_supported(engine, preferences): | ||||
| def _is_selected_language_supported(engine, preferences):  # pylint: disable=redefined-outer-name | ||||
|     language = preferences.get_value('language') | ||||
|     return (language == 'all' | ||||
|             or match_language(language, | ||||
| @ -1070,6 +1099,8 @@ def _is_selected_language_supported(engine, preferences): | ||||
| 
 | ||||
| @app.route('/image_proxy', methods=['GET']) | ||||
| def image_proxy(): | ||||
|     # pylint: disable=too-many-return-statements | ||||
| 
 | ||||
|     url = request.args.get('url') | ||||
| 
 | ||||
|     if not url: | ||||
| @ -1148,18 +1179,10 @@ def stats(): | ||||
|     engine_stats = get_engines_stats(filtered_engines) | ||||
|     engine_reliabilities = get_reliabilities(filtered_engines, checker_results) | ||||
| 
 | ||||
|     SORT_PARAMETERS = { | ||||
|         'name': (False, 'name', ''), | ||||
|         'score': (True, 'score', 0), | ||||
|         'result_count': (True, 'result_count', 0), | ||||
|         'time': (False, 'total', 0), | ||||
|         'reliability': (False, 'reliability', 100), | ||||
|     } | ||||
| 
 | ||||
|     if sort_order not in SORT_PARAMETERS: | ||||
|     if sort_order not in STATS_SORT_PARAMETERS: | ||||
|         sort_order = 'name' | ||||
| 
 | ||||
|     reverse, key_name, default_value = SORT_PARAMETERS[sort_order] | ||||
|     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) | ||||
| @ -1232,14 +1255,16 @@ def opensearch(): | ||||
| 
 | ||||
| @app.route('/favicon.ico') | ||||
| def favicon(): | ||||
|     return send_from_directory(os.path.join(app.root_path, | ||||
|     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') | ||||
| 
 | ||||
|         mimetype = 'image/vnd.microsoft.icon' | ||||
|     ) | ||||
| 
 | ||||
| @app.route('/clear_cookies') | ||||
| def clear_cookies(): | ||||
| @ -1294,13 +1319,13 @@ def config(): | ||||
|             'GIT_URL': brand.GIT_URL, | ||||
|             'DOCS_URL': brand.DOCS_URL | ||||
|         }, | ||||
|         'doi_resolvers': [r for r in settings['doi_resolvers']], | ||||
|         'doi_resolvers': list(settings['doi_resolvers'].keys()), | ||||
|         'default_doi_resolver': settings['default_doi_resolver'], | ||||
|     }) | ||||
| 
 | ||||
| 
 | ||||
| @app.errorhandler(404) | ||||
| def page_not_found(e): | ||||
| def page_not_found(_e): | ||||
|     return render('404.html'), 404 | ||||
| 
 | ||||
| 
 | ||||
| @ -1332,12 +1357,13 @@ class ReverseProxyPathFix: | ||||
|         proxy_set_header X-Script-Name /myprefix; | ||||
|         } | ||||
| 
 | ||||
|     :param app: the WSGI application | ||||
|     :param wsgi_app: the WSGI application | ||||
|     ''' | ||||
|     # pylint: disable=too-few-public-methods | ||||
| 
 | ||||
|     def __init__(self, app): | ||||
|     def __init__(self, wsgi_app): | ||||
| 
 | ||||
|         self.app = app | ||||
|         self.wsgi_app = wsgi_app | ||||
|         self.script_name = None | ||||
|         self.scheme = None | ||||
|         self.server = None | ||||
| @ -1371,7 +1397,7 @@ class ReverseProxyPathFix: | ||||
|         server = self.server or environ.get('HTTP_X_FORWARDED_HOST', '') | ||||
|         if server: | ||||
|             environ['HTTP_HOST'] = server | ||||
|         return self.app(environ, start_response) | ||||
|         return self.wsgi_app(environ, start_response) | ||||
| 
 | ||||
| 
 | ||||
| application = app | ||||
|  | ||||
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