|
========================================
|
|
Running shell commands to fetch results
|
|
========================================
|
|
|
|
Previously, with searx you could search over the Internet on other people's
|
|
computers. Now it is possible to fetch results from your local machine without
|
|
connecting to any networks from the same graphical user interface.
|
|
|
|
|
|
Command line engines
|
|
====================
|
|
|
|
In :pull:`2128` a new type of engine has been introduced called ``command``.
|
|
This engine lets administrators add engines which run arbitrary shell commands
|
|
and show its output on the web UI of searx.
|
|
|
|
When creating and enabling a ``command`` engine on a public searx instance,
|
|
you must be careful to avoid leaking private data. The easiest solution
|
|
is to add tokens to the engine. Thus, only those who have the appropriate token
|
|
can retrieve results from the it.
|
|
|
|
The engine base is flexible. Only your imagination can limit the power of this engine. (And
|
|
maybe security concerns.) The following options are available:
|
|
|
|
* ``command``: A comma separated list of the elements of the command. A special token {{QUERY}} tells searx where to put the search terms of the user. Example: ``['ls', '-l', '-h', '{{QUERY}}']``
|
|
* ``delimiter``: A dict containing a delimiter char and the "titles" of each element in keys.
|
|
* ``parse_regex``: A dict containing the regular expressions for each result key.
|
|
* ``query_type``: The expected type of user search terms. Possible values: ``path`` and ``enum``. ``path`` checks if the uesr provided path is inside the working directory. If not the query is not executed. ``enum`` is a list of allowed search terms. If the user submits something which is not included in the list, the query returns an error.
|
|
* ``query_enum``: A list containing allowed search terms if ``query_type`` is set to ``enum``.
|
|
* ``working_dir``: The directory where the command has to be executed. Default: ``.``
|
|
* ``result_separator``: The character that separates results. Default: ``\n``
|
|
|
|
|
|
The example engine below can be used to find files with a specific name in the configured
|
|
working directory.
|
|
|
|
.. code:: yaml
|
|
|
|
- name: find
|
|
engine: command
|
|
command: ['find', '.', '-name', '{{QUERY}}']
|
|
query_type: path
|
|
shortcut: fnd
|
|
delimiter:
|
|
chars: ' '
|
|
keys: ['line']
|
|
|
|
|
|
Next steps
|
|
==========
|
|
|
|
In the next milestone, support for local search engines and indexers (e.g. Elasticsearch)
|
|
are going to be added. This way, you will be able to query your own databases/indexers.
|
|
|
|
Acknowledgement
|
|
===============
|
|
|
|
This development was sponsored by `Search and Discovery Fund`_ of `NLnet Foundation`_ .
|
|
|
|
.. _Search and Discovery Fund: https://nlnet.nl/discovery
|
|
.. _NLnet Foundation: https://nlnet.nl/
|
|
|
|
|
|
| Happy hacking.
|
|
| kvch // 2020.09.28 21:26
|