mirror of
https://github.com/searxng/searxng.git
synced 2024-11-05 04:40:11 +01:00
47721a3485
for enabling by default advanced limiter functions in the future allow us to add features just for the public instances
248 lines
9.3 KiB
Python
248 lines
9.3 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
|
|
# lint: pylint
|
|
"""Implementation of the default settings.
|
|
|
|
"""
|
|
|
|
import typing
|
|
import numbers
|
|
import errno
|
|
import os
|
|
import logging
|
|
from base64 import b64decode
|
|
from os.path import dirname, abspath
|
|
|
|
from .sxng_locales import sxng_locales
|
|
|
|
searx_dir = abspath(dirname(__file__))
|
|
|
|
logger = logging.getLogger('searx')
|
|
OUTPUT_FORMATS = ['html', 'csv', 'json', 'rss']
|
|
SXNG_LOCALE_TAGS = ['all', 'auto'] + list(l[0] for l in sxng_locales)
|
|
SIMPLE_STYLE = ('auto', 'light', 'dark')
|
|
CATEGORIES_AS_TABS = {
|
|
'general': {},
|
|
'images': {},
|
|
'videos': {},
|
|
'news': {},
|
|
'map': {},
|
|
'music': {},
|
|
'it': {},
|
|
'science': {},
|
|
'files': {},
|
|
'social media': {},
|
|
}
|
|
STR_TO_BOOL = {
|
|
'0': False,
|
|
'false': False,
|
|
'off': False,
|
|
'1': True,
|
|
'true': True,
|
|
'on': True,
|
|
}
|
|
_UNDEFINED = object()
|
|
|
|
|
|
class SettingsValue:
|
|
"""Check and update a setting value"""
|
|
|
|
def __init__(
|
|
self,
|
|
type_definition: typing.Union[None, typing.Any, typing.Tuple[typing.Any]] = None,
|
|
default: typing.Any = None,
|
|
environ_name: str = None,
|
|
):
|
|
self.type_definition = (
|
|
type_definition if type_definition is None or isinstance(type_definition, tuple) else (type_definition,)
|
|
)
|
|
self.default = default
|
|
self.environ_name = environ_name
|
|
|
|
@property
|
|
def type_definition_repr(self):
|
|
types_str = [t.__name__ if isinstance(t, type) else repr(t) for t in self.type_definition]
|
|
return ', '.join(types_str)
|
|
|
|
def check_type_definition(self, value: typing.Any) -> None:
|
|
if value in self.type_definition:
|
|
return
|
|
type_list = tuple(t for t in self.type_definition if isinstance(t, type))
|
|
if not isinstance(value, type_list):
|
|
raise ValueError('The value has to be one of these types/values: {}'.format(self.type_definition_repr))
|
|
|
|
def __call__(self, value: typing.Any) -> typing.Any:
|
|
if value == _UNDEFINED:
|
|
value = self.default
|
|
# override existing value with environ
|
|
if self.environ_name and self.environ_name in os.environ:
|
|
value = os.environ[self.environ_name]
|
|
if self.type_definition == (bool,):
|
|
value = STR_TO_BOOL[value.lower()]
|
|
|
|
self.check_type_definition(value)
|
|
return value
|
|
|
|
|
|
class SettingSublistValue(SettingsValue):
|
|
"""Check the value is a sublist of type definition."""
|
|
|
|
def check_type_definition(self, value: typing.Any) -> typing.Any:
|
|
if not isinstance(value, list):
|
|
raise ValueError('The value has to a list')
|
|
for item in value:
|
|
if not item in self.type_definition[0]:
|
|
raise ValueError('{} not in {}'.format(item, self.type_definition))
|
|
|
|
|
|
class SettingsDirectoryValue(SettingsValue):
|
|
"""Check and update a setting value that is a directory path"""
|
|
|
|
def check_type_definition(self, value: typing.Any) -> typing.Any:
|
|
super().check_type_definition(value)
|
|
if not os.path.isdir(value):
|
|
raise FileNotFoundError(errno.ENOENT, os.strerror(errno.ENOENT), value)
|
|
|
|
def __call__(self, value: typing.Any) -> typing.Any:
|
|
if value == '':
|
|
value = self.default
|
|
return super().__call__(value)
|
|
|
|
|
|
class SettingsBytesValue(SettingsValue):
|
|
"""str are base64 decoded"""
|
|
|
|
def __call__(self, value: typing.Any) -> typing.Any:
|
|
if isinstance(value, str):
|
|
value = b64decode(value)
|
|
return super().__call__(value)
|
|
|
|
|
|
def apply_schema(settings, schema, path_list):
|
|
error = False
|
|
for key, value in schema.items():
|
|
if isinstance(value, SettingsValue):
|
|
try:
|
|
settings[key] = value(settings.get(key, _UNDEFINED))
|
|
except Exception as e: # pylint: disable=broad-except
|
|
# don't stop now: check other values
|
|
logger.error('%s: %s', '.'.join([*path_list, key]), e)
|
|
error = True
|
|
elif isinstance(value, dict):
|
|
error = error or apply_schema(settings.setdefault(key, {}), schema[key], [*path_list, key])
|
|
else:
|
|
settings.setdefault(key, value)
|
|
if len(path_list) == 0 and error:
|
|
raise ValueError('Invalid settings.yml')
|
|
return error
|
|
|
|
|
|
SCHEMA = {
|
|
'general': {
|
|
'debug': SettingsValue(bool, False, 'SEARXNG_DEBUG'),
|
|
'instance_name': SettingsValue(str, 'SearXNG'),
|
|
'privacypolicy_url': SettingsValue((None, False, str), None),
|
|
'contact_url': SettingsValue((None, False, str), None),
|
|
'donation_url': SettingsValue((bool, str), "https://docs.searxng.org/donate.html"),
|
|
'enable_metrics': SettingsValue(bool, True),
|
|
},
|
|
'brand': {
|
|
'issue_url': SettingsValue(str, 'https://github.com/searxng/searxng/issues'),
|
|
'new_issue_url': SettingsValue(str, 'https://github.com/searxng/searxng/issues/new'),
|
|
'docs_url': SettingsValue(str, 'https://docs.searxng.org'),
|
|
'public_instances': SettingsValue((False, str), 'https://searx.space'),
|
|
'wiki_url': SettingsValue(str, 'https://github.com/searxng/searxng/wiki'),
|
|
},
|
|
'search': {
|
|
'safe_search': SettingsValue((0, 1, 2), 0),
|
|
'autocomplete': SettingsValue(str, ''),
|
|
'autocomplete_min': SettingsValue(int, 4),
|
|
'default_lang': SettingsValue(tuple(SXNG_LOCALE_TAGS + ['']), ''),
|
|
'languages': SettingSublistValue(SXNG_LOCALE_TAGS, SXNG_LOCALE_TAGS),
|
|
'ban_time_on_fail': SettingsValue(numbers.Real, 5),
|
|
'max_ban_time_on_fail': SettingsValue(numbers.Real, 120),
|
|
'suspended_times': {
|
|
'SearxEngineAccessDenied': SettingsValue(numbers.Real, 86400),
|
|
'SearxEngineCaptcha': SettingsValue(numbers.Real, 86400),
|
|
'SearxEngineTooManyRequests': SettingsValue(numbers.Real, 3600),
|
|
'cf_SearxEngineCaptcha': SettingsValue(numbers.Real, 1296000),
|
|
'cf_SearxEngineAccessDenied': SettingsValue(numbers.Real, 86400),
|
|
'recaptcha_SearxEngineCaptcha': SettingsValue(numbers.Real, 604800),
|
|
},
|
|
'formats': SettingsValue(list, OUTPUT_FORMATS),
|
|
},
|
|
'server': {
|
|
'port': SettingsValue((int, str), 8888, 'SEARXNG_PORT'),
|
|
'bind_address': SettingsValue(str, '127.0.0.1', 'SEARXNG_BIND_ADDRESS'),
|
|
'limiter': SettingsValue(bool, False),
|
|
'public_instance': SettingsValue(bool, False),
|
|
'secret_key': SettingsValue(str, environ_name='SEARXNG_SECRET'),
|
|
'base_url': SettingsValue((False, str), False, 'SEARXNG_BASE_URL'),
|
|
'image_proxy': SettingsValue(bool, False),
|
|
'http_protocol_version': SettingsValue(('1.0', '1.1'), '1.0'),
|
|
'method': SettingsValue(('POST', 'GET'), 'POST'),
|
|
'default_http_headers': SettingsValue(dict, {}),
|
|
},
|
|
'redis': {
|
|
'url': SettingsValue((None, False, str), False, 'SEARXNG_REDIS_URL'),
|
|
},
|
|
'ui': {
|
|
'static_path': SettingsDirectoryValue(str, os.path.join(searx_dir, 'static')),
|
|
'static_use_hash': SettingsValue(bool, False),
|
|
'templates_path': SettingsDirectoryValue(str, os.path.join(searx_dir, 'templates')),
|
|
'default_theme': SettingsValue(str, 'simple'),
|
|
'default_locale': SettingsValue(str, ''),
|
|
'theme_args': {
|
|
'simple_style': SettingsValue(SIMPLE_STYLE, 'auto'),
|
|
},
|
|
'center_alignment': SettingsValue(bool, False),
|
|
'results_on_new_tab': SettingsValue(bool, False),
|
|
'advanced_search': SettingsValue(bool, False),
|
|
'query_in_title': SettingsValue(bool, False),
|
|
'infinite_scroll': SettingsValue(bool, False),
|
|
'cache_url': SettingsValue(str, 'https://web.archive.org/web/'),
|
|
'search_on_category_select': SettingsValue(bool, True),
|
|
},
|
|
'preferences': {
|
|
'lock': SettingsValue(list, []),
|
|
},
|
|
'outgoing': {
|
|
'useragent_suffix': SettingsValue(str, ''),
|
|
'request_timeout': SettingsValue(numbers.Real, 3.0),
|
|
'enable_http2': SettingsValue(bool, True),
|
|
'verify': SettingsValue((bool, str), True),
|
|
'max_request_timeout': SettingsValue((None, numbers.Real), None),
|
|
'pool_connections': SettingsValue(int, 100),
|
|
'pool_maxsize': SettingsValue(int, 10),
|
|
'keepalive_expiry': SettingsValue(numbers.Real, 5.0),
|
|
# default maximum redirect
|
|
# from https://github.com/psf/requests/blob/8c211a96cdbe9fe320d63d9e1ae15c5c07e179f8/requests/models.py#L55
|
|
'max_redirects': SettingsValue(int, 30),
|
|
'retries': SettingsValue(int, 0),
|
|
'proxies': SettingsValue((None, str, dict), None),
|
|
'source_ips': SettingsValue((None, str, list), None),
|
|
# Tor configuration
|
|
'using_tor_proxy': SettingsValue(bool, False),
|
|
'extra_proxy_timeout': SettingsValue(int, 0),
|
|
'networks': {},
|
|
},
|
|
'result_proxy': {
|
|
'url': SettingsValue((None, str), None),
|
|
'key': SettingsBytesValue((None, bytes), None),
|
|
'proxify_results': SettingsValue(bool, False),
|
|
},
|
|
'plugins': SettingsValue(list, []),
|
|
'enabled_plugins': SettingsValue((None, list), None),
|
|
'checker': {
|
|
'off_when_debug': SettingsValue(bool, True, None),
|
|
'scheduling': SettingsValue((None, dict), None, None),
|
|
},
|
|
'categories_as_tabs': SettingsValue(dict, CATEGORIES_AS_TABS),
|
|
'engines': SettingsValue(list, []),
|
|
'doi_resolvers': {},
|
|
}
|
|
|
|
|
|
def settings_set_defaults(settings):
|
|
apply_schema(settings, SCHEMA, [])
|
|
return settings
|