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			50 lines
		
	
	
		
			1.7 KiB
		
	
	
	
		
			ReStructuredText
		
	
	
	
	
	
|  | .. _private engines:
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|  | 
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|  | ============================
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|  | Private Engines (``tokens``)
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|  | ============================
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|  | 
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|  | Administrators might find themselves wanting to limit access to some of the
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|  | enabled engines on their instances. It might be because they do not want to
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|  | expose some private information through :ref:`offline engines`.  Or they would
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|  | rather share engines only with their trusted friends or colleagues.
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|  | 
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|  | To solve this issue the concept of *private engines* exists.
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|  | 
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|  | 
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|  | A new option was added to engines named `tokens`. It expects a list of
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|  | strings. If the user making a request presents one of the tokens of an engine,
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|  | they can access information about the engine and make search requests.
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|  | 
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|  | Example configuration to restrict access to the Arch Linux Wiki engine:
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|  | 
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|  | .. code:: yaml
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|  | 
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|  |   - name: arch linux wiki
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|  |     engine: archlinux
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|  |     shortcut: al
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|  |     tokens: [ 'my-secret-token' ]
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|  | 
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|  | 
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|  | Unless a user has configured the right token, the engine is going
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|  | to be hidden from him/her. It is not going to be included in the
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|  | list of engines on the Preferences page and in the output of
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|  | `/config` REST API call.
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|  | 
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|  | Tokens can be added to one's configuration on the Preferences page
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|  | under "Engine tokens". The input expects a comma separated list of
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|  | strings.
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|  | 
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|  | The distribution of the tokens from the administrator to the users
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|  | is not carved in stone. As providing access to such engines
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|  | implies that the admin knows and trusts the user, we do not see
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|  | necessary to come up with a strict process. Instead,
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|  | we would like to add guidelines to the documentation of the feature.
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|  | 
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|  | 
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|  | Acknowledgment
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|  | ==============
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|  | 
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|  | This development was sponsored by `Search and Discovery Fund
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|  | <https://nlnet.nl/discovery>`_ of `NLnet Foundation <https://nlnet.nl/>`_.
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