mirror of
https://github.com/searxng/searxng.git
synced 2024-11-22 04:01:40 +01:00
plugins: refactor initialization
add a new function "init" call when the app starts. The function can: * return False to disable the plugin. * modify the Flask app.
This commit is contained in:
Alexandre Flament
parent
adeb084cf4
commit
2b4fef7118
@ -1,122 +1,38 @@
|
||||
'''
|
||||
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) 2015 by Adam Tauber, <asciimoo@gmail.com>
|
||||
'''
|
||||
# SPDX-License-Identifier: AGPL-3.0-or-later
|
||||
# lint: pylint
|
||||
# pylint: disable=missing-module-docstring, missing-class-docstring
|
||||
|
||||
import sys
|
||||
from hashlib import sha256
|
||||
from importlib import import_module
|
||||
from os import listdir, makedirs, remove, stat, utime
|
||||
from os.path import abspath, basename, dirname, exists, join
|
||||
from shutil import copyfile
|
||||
from pkgutil import iter_modules
|
||||
from logging import getLogger
|
||||
|
||||
from searx import logger, settings
|
||||
|
||||
|
||||
logger = logger.getChild('plugins')
|
||||
logger = logger.getChild("plugins")
|
||||
|
||||
from searx.plugins import (oa_doi_rewrite,
|
||||
ahmia_filter,
|
||||
hash_plugin,
|
||||
infinite_scroll,
|
||||
self_info,
|
||||
hostname_replace,
|
||||
search_on_category_select,
|
||||
tracker_url_remover,
|
||||
vim_hotkeys)
|
||||
required_attrs = (
|
||||
("name", str),
|
||||
("description", str),
|
||||
("default_on", bool)
|
||||
)
|
||||
|
||||
required_attrs = (('name', str),
|
||||
('description', str),
|
||||
('default_on', bool))
|
||||
|
||||
optional_attrs = (('js_dependencies', tuple),
|
||||
('css_dependencies', tuple),
|
||||
('preference_section', str))
|
||||
optional_attrs = (
|
||||
("js_dependencies", tuple),
|
||||
("css_dependencies", tuple),
|
||||
("preference_section", str),
|
||||
)
|
||||
|
||||
|
||||
class Plugin():
|
||||
default_on = False
|
||||
name = 'Default plugin'
|
||||
description = 'Default plugin description'
|
||||
|
||||
|
||||
class PluginStore():
|
||||
|
||||
def __init__(self):
|
||||
self.plugins = []
|
||||
|
||||
def __iter__(self):
|
||||
for plugin in self.plugins:
|
||||
yield plugin
|
||||
|
||||
def register(self, *plugins, external=False):
|
||||
if external:
|
||||
plugins = load_external_plugins(plugins)
|
||||
for plugin in plugins:
|
||||
for plugin_attr, plugin_attr_type in required_attrs:
|
||||
if not hasattr(plugin, plugin_attr):
|
||||
logger.critical('missing attribute "{0}", cannot load plugin: {1}'.format(plugin_attr, plugin))
|
||||
exit(3)
|
||||
attr = getattr(plugin, plugin_attr)
|
||||
if not isinstance(attr, plugin_attr_type):
|
||||
type_attr = str(type(attr))
|
||||
logger.critical(
|
||||
'attribute "{0}" is of type {2}, must be of type {3}, cannot load plugin: {1}'
|
||||
.format(plugin_attr, plugin, type_attr, plugin_attr_type)
|
||||
)
|
||||
exit(3)
|
||||
for plugin_attr, plugin_attr_type in optional_attrs:
|
||||
if not hasattr(plugin, plugin_attr) or not isinstance(getattr(plugin, plugin_attr), plugin_attr_type):
|
||||
setattr(plugin, plugin_attr, plugin_attr_type())
|
||||
plugin.id = plugin.name.replace(' ', '_')
|
||||
if not hasattr(plugin, 'preference_section'):
|
||||
plugin.preference_section = 'general'
|
||||
if plugin.preference_section == 'query':
|
||||
for plugin_attr in ('query_keywords', 'query_examples'):
|
||||
if not hasattr(plugin, plugin_attr):
|
||||
logger.critical('missing attribute "{0}", cannot load plugin: {1}'.format(plugin_attr, plugin))
|
||||
exit(3)
|
||||
self.plugins.append(plugin)
|
||||
|
||||
def call(self, ordered_plugin_list, plugin_type, request, *args, **kwargs):
|
||||
ret = True
|
||||
for plugin in ordered_plugin_list:
|
||||
if hasattr(plugin, plugin_type):
|
||||
ret = getattr(plugin, plugin_type)(request, *args, **kwargs)
|
||||
if not ret:
|
||||
break
|
||||
|
||||
return ret
|
||||
|
||||
|
||||
def load_external_plugins(plugin_names):
|
||||
plugins = []
|
||||
for name in plugin_names:
|
||||
logger.debug('loading plugin: {0}'.format(name))
|
||||
try:
|
||||
pkg = import_module(name)
|
||||
except Exception as e:
|
||||
logger.critical('failed to load plugin module {0}: {1}'.format(name, e))
|
||||
exit(3)
|
||||
|
||||
pkg.__base_path = dirname(abspath(pkg.__file__))
|
||||
|
||||
prepare_package_resources(pkg, name)
|
||||
|
||||
plugins.append(pkg)
|
||||
logger.debug('plugin "{0}" loaded'.format(name))
|
||||
return plugins
|
||||
def sha_sum(filename):
|
||||
with open(filename, "rb") as f:
|
||||
file_content_bytes = f.read()
|
||||
return sha256(file_content_bytes).hexdigest()
|
||||
|
||||
|
||||
def sync_resource(base_path, resource_path, name, target_dir, plugin_dir):
|
||||
@ -130,74 +46,206 @@ def sync_resource(base_path, resource_path, name, target_dir, plugin_dir):
|
||||
# the HTTP server) do not change
|
||||
dep_stat = stat(dep_path)
|
||||
utime(resource_path, ns=(dep_stat.st_atime_ns, dep_stat.st_mtime_ns))
|
||||
except:
|
||||
logger.critical('failed to copy plugin resource {0} for plugin {1}'.format(file_name, name))
|
||||
exit(3)
|
||||
except IOError:
|
||||
logger.critical(
|
||||
"failed to copy plugin resource {0} for plugin {1}".format(
|
||||
file_name, name
|
||||
)
|
||||
)
|
||||
sys.exit(3)
|
||||
|
||||
# returning with the web path of the resource
|
||||
return join('plugins/external_plugins', plugin_dir, file_name)
|
||||
return join("plugins/external_plugins", plugin_dir, file_name)
|
||||
|
||||
|
||||
def prepare_package_resources(pkg, name):
|
||||
plugin_dir = 'plugin_' + name
|
||||
target_dir = join(settings['ui']['static_path'], 'plugins/external_plugins', plugin_dir)
|
||||
def prepare_package_resources(plugin, plugin_module_name):
|
||||
# pylint: disable=consider-using-generator
|
||||
plugin_base_path = dirname(abspath(plugin.__file__))
|
||||
|
||||
plugin_dir = plugin_module_name
|
||||
target_dir = join(
|
||||
settings["ui"]["static_path"], "plugins/external_plugins", plugin_dir
|
||||
)
|
||||
try:
|
||||
makedirs(target_dir, exist_ok=True)
|
||||
except:
|
||||
logger.critical('failed to create resource directory {0} for plugin {1}'.format(target_dir, name))
|
||||
exit(3)
|
||||
except IOError:
|
||||
logger.critical(
|
||||
"failed to create resource directory {0} for plugin {1}".format(
|
||||
target_dir, plugin_module_name
|
||||
)
|
||||
)
|
||||
sys.exit(3)
|
||||
|
||||
resources = []
|
||||
|
||||
if hasattr(pkg, 'js_dependencies'):
|
||||
resources.extend(map(basename, pkg.js_dependencies))
|
||||
pkg.js_dependencies = tuple([
|
||||
sync_resource(pkg.__base_path, x, name, target_dir, plugin_dir)
|
||||
for x in pkg.js_dependencies
|
||||
])
|
||||
if hasattr(pkg, 'css_dependencies'):
|
||||
resources.extend(map(basename, pkg.css_dependencies))
|
||||
pkg.css_dependencies = tuple([
|
||||
sync_resource(pkg.__base_path, x, name, target_dir, plugin_dir)
|
||||
for x in pkg.css_dependencies
|
||||
])
|
||||
if hasattr(plugin, "js_dependencies"):
|
||||
resources.extend(map(basename, plugin.js_dependencies))
|
||||
plugin.js_dependencies = tuple(
|
||||
[
|
||||
sync_resource(
|
||||
plugin_base_path, x, plugin_module_name, target_dir, plugin_dir
|
||||
)
|
||||
for x in plugin.js_dependencies
|
||||
]
|
||||
)
|
||||
if hasattr(plugin, "css_dependencies"):
|
||||
resources.extend(map(basename, plugin.css_dependencies))
|
||||
plugin.css_dependencies = tuple(
|
||||
[
|
||||
sync_resource(
|
||||
plugin_base_path, x, plugin_module_name, target_dir, plugin_dir
|
||||
)
|
||||
for x in plugin.css_dependencies
|
||||
]
|
||||
)
|
||||
|
||||
for f in listdir(target_dir):
|
||||
if basename(f) not in resources:
|
||||
resource_path = join(target_dir, basename(f))
|
||||
try:
|
||||
remove(resource_path)
|
||||
except:
|
||||
logger.critical('failed to remove unused resource file {0} for plugin {1}'.format(resource_path, name))
|
||||
exit(3)
|
||||
except IOError:
|
||||
logger.critical(
|
||||
"failed to remove unused resource file {0} for plugin {1}".format(
|
||||
resource_path, plugin_module_name
|
||||
)
|
||||
)
|
||||
sys.exit(3)
|
||||
|
||||
|
||||
def sha_sum(filename):
|
||||
with open(filename, "rb") as f:
|
||||
file_content_bytes = f.read()
|
||||
return sha256(file_content_bytes).hexdigest()
|
||||
def load_plugin(plugin_module_name, external):
|
||||
# pylint: disable=too-many-branches
|
||||
try:
|
||||
plugin = import_module(plugin_module_name)
|
||||
except (
|
||||
SyntaxError,
|
||||
KeyboardInterrupt,
|
||||
SystemExit,
|
||||
SystemError,
|
||||
ImportError,
|
||||
RuntimeError,
|
||||
) as e:
|
||||
logger.critical("%s: fatal exception", plugin_module_name, exc_info=e)
|
||||
sys.exit(3)
|
||||
except BaseException:
|
||||
logger.exception("%s: exception while loading, the plugin is disabled", plugin_module_name)
|
||||
return None
|
||||
|
||||
# difference with searx: use module name instead of the user name
|
||||
plugin.id = plugin_module_name
|
||||
|
||||
#
|
||||
plugin.logger = getLogger(plugin_module_name)
|
||||
|
||||
for plugin_attr, plugin_attr_type in required_attrs:
|
||||
if not hasattr(plugin, plugin_attr):
|
||||
logger.critical(
|
||||
'%s: missing attribute "%s", cannot load plugin', plugin, plugin_attr
|
||||
)
|
||||
sys.exit(3)
|
||||
attr = getattr(plugin, plugin_attr)
|
||||
if not isinstance(attr, plugin_attr_type):
|
||||
type_attr = str(type(attr))
|
||||
logger.critical(
|
||||
'{1}: attribute "{0}" is of type {2}, must be of type {3}, cannot load plugin'.format(
|
||||
plugin, plugin_attr, type_attr, plugin_attr_type
|
||||
)
|
||||
)
|
||||
sys.exit(3)
|
||||
|
||||
for plugin_attr, plugin_attr_type in optional_attrs:
|
||||
if not hasattr(plugin, plugin_attr) or not isinstance(
|
||||
getattr(plugin, plugin_attr), plugin_attr_type
|
||||
):
|
||||
setattr(plugin, plugin_attr, plugin_attr_type())
|
||||
|
||||
if not hasattr(plugin, "preference_section"):
|
||||
plugin.preference_section = "general"
|
||||
|
||||
# query plugin
|
||||
if plugin.preference_section == "query":
|
||||
for plugin_attr in ("query_keywords", "query_examples"):
|
||||
if not hasattr(plugin, plugin_attr):
|
||||
logger.critical(
|
||||
'missing attribute "{0}", cannot load plugin: {1}'.format(
|
||||
plugin_attr, plugin
|
||||
)
|
||||
)
|
||||
sys.exit(3)
|
||||
|
||||
if settings.get("enabled_plugins"):
|
||||
# searx compatibility: plugin.name in settings['enabled_plugins']
|
||||
plugin.default_on = (
|
||||
plugin.name in settings["enabled_plugins"]
|
||||
or plugin.id in settings["enabled_plugins"]
|
||||
)
|
||||
|
||||
# copy ressources if this is an external plugin
|
||||
if external:
|
||||
prepare_package_resources(plugin, plugin_module_name)
|
||||
|
||||
logger.debug("%s: loaded", plugin_module_name)
|
||||
|
||||
return plugin
|
||||
|
||||
|
||||
def load_and_initialize_plugin(plugin_module_name, external, init_args):
|
||||
plugin = load_plugin(plugin_module_name, external)
|
||||
if plugin and hasattr(plugin, 'init'):
|
||||
try:
|
||||
return plugin if plugin.init(*init_args) else None
|
||||
except Exception: # pylint: disable=broad-except
|
||||
plugin.logger.exception(
|
||||
"Exception while calling init, the plugin is disabled"
|
||||
)
|
||||
return None
|
||||
return plugin
|
||||
|
||||
|
||||
class PluginStore:
|
||||
def __init__(self):
|
||||
self.plugins = []
|
||||
|
||||
def __iter__(self):
|
||||
for plugin in self.plugins:
|
||||
yield plugin
|
||||
|
||||
def register(self, plugin):
|
||||
self.plugins.append(plugin)
|
||||
|
||||
def call(self, ordered_plugin_list, plugin_type, *args, **kwargs):
|
||||
# pylint: disable=no-self-use
|
||||
ret = True
|
||||
for plugin in ordered_plugin_list:
|
||||
if hasattr(plugin, plugin_type):
|
||||
try:
|
||||
ret = getattr(plugin, plugin_type)(*args, **kwargs)
|
||||
if not ret:
|
||||
break
|
||||
except Exception: # pylint: disable=broad-except
|
||||
plugin.logger.exception("Exception while calling %s", plugin_type)
|
||||
return ret
|
||||
|
||||
|
||||
plugins = PluginStore()
|
||||
plugins.register(oa_doi_rewrite)
|
||||
plugins.register(hash_plugin)
|
||||
plugins.register(infinite_scroll)
|
||||
plugins.register(self_info)
|
||||
plugins.register(hostname_replace)
|
||||
plugins.register(search_on_category_select)
|
||||
plugins.register(tracker_url_remover)
|
||||
plugins.register(vim_hotkeys)
|
||||
# load external plugins
|
||||
if settings['plugins']:
|
||||
plugins.register(*settings['plugins'], external=True)
|
||||
|
||||
if settings['enabled_plugins']:
|
||||
for plugin in plugins:
|
||||
if plugin.name in settings['enabled_plugins']:
|
||||
plugin.default_on = True
|
||||
else:
|
||||
plugin.default_on = False
|
||||
|
||||
# load tor specific plugins
|
||||
if settings['outgoing']['using_tor_proxy']:
|
||||
plugins.register(ahmia_filter)
|
||||
def plugin_module_names():
|
||||
yield_plugins = set()
|
||||
|
||||
# embedded plugins
|
||||
for module_name in iter_modules(path=[dirname(__file__)]):
|
||||
yield (module_name, False)
|
||||
yield_plugins.add(module_name)
|
||||
# external plugins
|
||||
for module_name in settings['plugins']:
|
||||
if module_name not in yield_plugins:
|
||||
yield (module_name, True)
|
||||
yield_plugins.add(module_name)
|
||||
|
||||
|
||||
def initialize(app):
|
||||
for module_name, external in plugin_module_names():
|
||||
plugin = load_and_initialize_plugin(__name__ + "." + module_name.name, external, (app, settings))
|
||||
if plugin:
|
||||
plugins.register(plugin)
|
||||
|
||||
@ -13,15 +13,17 @@ preference_section = 'onions'
|
||||
ahmia_blacklist = None
|
||||
|
||||
|
||||
def get_ahmia_blacklist():
|
||||
global ahmia_blacklist
|
||||
if not ahmia_blacklist:
|
||||
ahmia_blacklist = ahmia_blacklist_loader()
|
||||
return ahmia_blacklist
|
||||
|
||||
|
||||
def on_result(request, search, result):
|
||||
if not result.get('is_onion') or not result.get('parsed_url'):
|
||||
return True
|
||||
result_hash = md5(result['parsed_url'].hostname.encode()).hexdigest()
|
||||
return result_hash not in get_ahmia_blacklist()
|
||||
return result_hash not in ahmia_blacklist
|
||||
|
||||
|
||||
def init(app, settings):
|
||||
global ahmia_blacklist # pylint: disable=global-statement
|
||||
if not settings['outgoing']['using_tor_proxy']:
|
||||
# disable the plugin
|
||||
return False
|
||||
ahmia_blacklist = ahmia_blacklist_loader()
|
||||
return True
|
||||
|
||||
@ -200,8 +200,8 @@ SCHEMA = {
|
||||
'networks': {
|
||||
},
|
||||
},
|
||||
'plugins': SettingsValue((None, list), None),
|
||||
'enabled_plugins': SettingsValue(list, []),
|
||||
'plugins': SettingsValue(list, []),
|
||||
'enabled_plugins': SettingsValue((None, list), None),
|
||||
'checker': {
|
||||
'off_when_debug': SettingsValue(bool, True),
|
||||
},
|
||||
|
||||
@ -85,7 +85,7 @@ from searx.utils import (
|
||||
)
|
||||
from searx.version import VERSION_STRING, GIT_URL, GIT_BRANCH
|
||||
from searx.query import RawTextQuery
|
||||
from searx.plugins import plugins
|
||||
from searx.plugins import plugins, initialize as plugin_initialize
|
||||
from searx.plugins.oa_doi_rewrite import get_doi_resolver
|
||||
from searx.preferences import (
|
||||
Preferences,
|
||||
@ -158,25 +158,6 @@ 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)
|
||||
|
||||
# used when translating category names
|
||||
@ -1351,6 +1332,27 @@ def page_not_found(_e):
|
||||
return render('404.html'), 404
|
||||
|
||||
|
||||
# see https://flask.palletsprojects.com/en/1.1.x/cli/
|
||||
# True if "FLASK_APP=searx/webapp.py FLASK_ENV=development flask run"
|
||||
flask_run_development = (
|
||||
os.environ.get("FLASK_APP") is not None
|
||||
and os.environ.get("FLASK_ENV") == 'development'
|
||||
and is_flask_run_cmdline()
|
||||
)
|
||||
|
||||
# True if reload feature is activated of werkzeug, False otherwise (including uwsgi, etc..)
|
||||
# __name__ != "__main__" if searx.webapp is imported (make test, make docs, uwsgi...)
|
||||
# see run() at the end of this file : searx_debug activates the reload feature.
|
||||
werkzeug_reloader = flask_run_development or (searx_debug and __name__ == "__main__")
|
||||
|
||||
# initialize the engines except on the first run of the werkzeug server.
|
||||
if (not werkzeug_reloader
|
||||
or (werkzeug_reloader
|
||||
and os.environ.get("WERKZEUG_RUN_MAIN") == "true") ):
|
||||
plugin_initialize(app)
|
||||
search_initialize(enable_checker=True)
|
||||
|
||||
|
||||
def run():
|
||||
logger.debug(
|
||||
'starting webserver on %s:%s',
|
||||
|
||||
@ -10,6 +10,12 @@ def get_search_mock(query, **kwargs):
|
||||
result_container=Mock(answers=dict()))
|
||||
|
||||
|
||||
class PluginMock():
|
||||
default_on = False
|
||||
name = 'Default plugin'
|
||||
description = 'Default plugin description'
|
||||
|
||||
|
||||
class PluginStoreTest(SearxTestCase):
|
||||
|
||||
def test_PluginStore_init(self):
|
||||
@ -18,14 +24,14 @@ class PluginStoreTest(SearxTestCase):
|
||||
|
||||
def test_PluginStore_register(self):
|
||||
store = plugins.PluginStore()
|
||||
testplugin = plugins.Plugin()
|
||||
testplugin = PluginMock()
|
||||
store.register(testplugin)
|
||||
|
||||
self.assertTrue(len(store.plugins) == 1)
|
||||
|
||||
def test_PluginStore_call(self):
|
||||
store = plugins.PluginStore()
|
||||
testplugin = plugins.Plugin()
|
||||
testplugin = PluginMock()
|
||||
store.register(testplugin)
|
||||
setattr(testplugin, 'asdf', Mock())
|
||||
request = Mock()
|
||||
@ -40,8 +46,9 @@ class PluginStoreTest(SearxTestCase):
|
||||
class SelfIPTest(SearxTestCase):
|
||||
|
||||
def test_PluginStore_init(self):
|
||||
plugin = plugins.load_and_initialize_plugin('searx.plugins.self_info', False, (None, {}))
|
||||
store = plugins.PluginStore()
|
||||
store.register(plugins.self_info)
|
||||
store.register(plugin)
|
||||
|
||||
self.assertTrue(len(store.plugins) == 1)
|
||||
|
||||
@ -89,7 +96,8 @@ class HashPluginTest(SearxTestCase):
|
||||
|
||||
def test_PluginStore_init(self):
|
||||
store = plugins.PluginStore()
|
||||
store.register(plugins.hash_plugin)
|
||||
plugin = plugins.load_and_initialize_plugin('searx.plugins.hash_plugin', False, (None, {}))
|
||||
store.register(plugin)
|
||||
|
||||
self.assertTrue(len(store.plugins) == 1)
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user