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	This patch brings two major changes:
- ``Result.filter_urls(..)`` to pass a filter function for URL fields
- The ``enabled_plugins:`` section in SearXNG's settings do no longer exists.
To understand plugin development compile documentation:
    $ make docs.clean docs.live
and read http://0.0.0.0:8000/dev/plugins/development.html
There is no longer a distinction between built-in and external plugin, all
plugins are registered via the settings in the ``plugins:`` section.
In SearXNG, plugins can be registered via a fully qualified class name.  A
configuration (`PluginCfg`) can be transferred to the plugin, e.g. to activate
it by default / *opt-in* or *opt-out* from user's point of view.
built-in plugins
================
The built-in plugins are all located in the namespace `searx.plugins`.
.. code:: yaml
    plugins:
      searx.plugins.calculator.SXNGPlugin:
        active: true
      searx.plugins.hash_plugin.SXNGPlugin:
        active: true
      searx.plugins.self_info.SXNGPlugin:
        active: true
      searx.plugins.tracker_url_remover.SXNGPlugin:
        active: true
      searx.plugins.unit_converter.SXNGPlugin:
        active: true
      searx.plugins.ahmia_filter.SXNGPlugin:
        active: true
      searx.plugins.hostnames.SXNGPlugin:
        active: true
      searx.plugins.oa_doi_rewrite.SXNGPlugin:
        active: false
      searx.plugins.tor_check.SXNGPlugin:
        active: false
external plugins
================
SearXNG supports *external plugins* / there is no need to install one, SearXNG
runs out of the box.
- Only show green hosted results: https://github.com/return42/tgwf-searx-plugins/
To get a developer installation in a SearXNG developer environment:
.. code:: sh
   $ git clone git@github.com:return42/tgwf-searx-plugins.git
   $ ./manage pyenv.cmd python -m \
         pip install -e tgwf-searx-plugins
To register the plugin in SearXNG add ``only_show_green_results.SXNGPlugin`` to
the ``plugins:``:
.. code:: yaml
    plugins:
      # ...
      only_show_green_results.SXNGPlugin:
        active: false
Result.filter_urls(..)
======================
The ``Result.filter_urls(..)`` can be used to filter and/or modify URL fields.
In the following example, the filter function ``my_url_filter``:
.. code:: python
   def my_url_filter(result, field_name, url_src) -> bool | str:
       if "google" in url_src:
           return False              # remove URL field from result
       if "facebook" in url_src:
           new_url = url_src.replace("facebook", "fb-dummy")
           return new_url            # return modified URL
       return True                   # leave URL in field unchanged
is applied to all URL fields in the :py:obj:`Plugin.on_result` hook:
.. code:: python
   class MyUrlFilter(Plugin):
       ...
       def on_result(self, request, search, result) -> bool:
           result.filter_urls(my_url_filter)
           return True
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
		
	
			
		
			
				
	
	
		
			59 lines
		
	
	
		
			1.8 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			59 lines
		
	
	
		
			1.8 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
# SPDX-License-Identifier: AGPL-3.0-or-later
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# pylint: disable=missing-module-docstring
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from __future__ import annotations
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import typing
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import re
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from urllib.parse import urlunparse, parse_qsl, urlencode
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from flask_babel import gettext
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from searx.plugins import Plugin, PluginInfo
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if typing.TYPE_CHECKING:
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    from searx.search import SearchWithPlugins
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    from searx.extended_types import SXNG_Request
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    from searx.result_types import Result
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    from searx.plugins import PluginCfg
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regexes = {
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    re.compile(r'utm_[^&]+'),
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    re.compile(r'(wkey|wemail)[^&]*'),
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    re.compile(r'(_hsenc|_hsmi|hsCtaTracking|__hssc|__hstc|__hsfp)[^&]*'),
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    re.compile(r'&$'),
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}
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class SXNGPlugin(Plugin):
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    """Remove trackers arguments from the returned URL"""
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    id = "tracker_url_remover"
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    def __init__(self, plg_cfg: "PluginCfg") -> None:
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        super().__init__(plg_cfg)
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        self.info = PluginInfo(
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            id=self.id,
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            name=gettext("Tracker URL remover"),
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            description=gettext("Remove trackers arguments from the returned URL"),
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            preference_section="privacy",
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        )
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    def on_result(
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        self, request: "SXNG_Request", search: "SearchWithPlugins", result: Result
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    ) -> bool:  # pylint: disable=unused-argument
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        if not result.parsed_url:
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            return True
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        parsed_query: list[tuple[str, str]] = parse_qsl(result.parsed_url.query)
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        for name_value in list(parsed_query):
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            param_name = name_value[0]
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            for reg in regexes:
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                if reg.match(param_name):
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                    parsed_query.remove(name_value)
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                    result.parsed_url = result.parsed_url._replace(query=urlencode(parsed_query))
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                    result.url = urlunparse(result.parsed_url)
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                    break
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        return True
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