![]() If it is incorrect, false is instead returned. If the permission is found to be correct, true is returned, as in this case, along with information about the potentially specified attributes. When running the inject node, the values recorded by grant are handled by the permission node, a simple implementation to test one permission per time, without attributes. In this example, it reads the injected values, granting permission of Create ANY to role user when accessing resource object. The grant node can set the options using string or by obtaining the value from the msg. Then, separately (or following it if the output is added to the node by checking the specific option in the properties), another injection node sends these values: Attribute name In this section, an example of a flow containing all nodes is provided.įirst, an instance of accesscontrol is generated by triggering the AC init node, in this case using an inject node. This flow shows a overly simplified use case scenario.Īlso, this flow shows how to combine this node with the MongoDB one. attributes: optional values related to the resource, to provide a more accurate permission.possession: specifies if the role can interact with the resource of 'any' other role or just with its 'own'.action: how the role can interact with the resource (CRUD actions).resource: what the role can or cannot interact with.role: the user or group of users receiving the authorization.Permission are defined by specification of 5 properties: Attempts to modify it after calling this node will fail and will be reported.ĭetailed information about each node can be read in the help tab of Node-RED. Permissions: checks if multiple permissions ( with attributes) are implemented or not ĪC lock: freezes the AccessControl instance. If true, also the attributes that are linked to the operation are returned in a separate message field The result output can be either true or false based on this. Permission: checks if a specific permission ( without attributes) is implemented or not. Remove: removes either specified role(s) or resource(s) from AccessControl Grant: enables to grant to a role a CRUD action (Create, Read, Update, Delete) over a resource Įxtend: a quick way of granting to a role the same permissions of another role, outlining a condition of inheritance towards this ĭeny: drops CRUD permissions previously set with grant, along with all optionally set attributes As for the export node, an identifier can be specified to import from MongoDB and remove that field from the JSON If specified, it can export with a identifier so it is possible to save the output directly into a MongoDB database, using the specific Node-RED node ĪC import: import the AccessControl permissions from a string (JSON format). By default it has no output, but one can be added by checking the specific option in the properties ĪC export: export the AccessControl permissions as a string (JSON format). It should be called just once for each execution, although the instance is not overwritten without explicitly specifying it checking the related option. How to useĪC init: creates the AccessControl instance that contains all permissions (as no database is used). AlternativeĪ similar solution is given which does not employ context: accesscontrol-nocontext. $ npm install node-red-contrib-accesscontrol ![]() Install via Node-RED Manage Palette or via npm: $ cd ~/.node-red Tested on most versions starting from 2.0.5 up to 2.1.2. Npm install node-red-contrib-accesscontrolĪ Node-RED implementation of the accesscontrol nmp module, providing Role Based Access Control with the addition of Attributes (see this NIST paper).Īlso supporting export/import to/from the MongoDB node. Node-RED wrapper for the accesscontrol npm module.
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