padcom / kontrolle

Overview

This module works by defining a set of roles, permissions and features single user has and checking to see if a said user possesses a certain capability, either by checking if specific role exists or feature is available. This allows you to determine whether a user should have access to a given resource or operation. Features can be extended with specific variations (like alpha or beta) that can be further checked at evaluation. The module is written in Typescript and compiles to commonjs.

Check the documentation for extended information about methods and usage.

Table of Contents

• Installation
• Test
• Build
• Document
• Usage
  • Initialization
  • Evaluation
    • Permissions
      • can
      • canAny
      • canAll
      • canAnyAction
      • canAllActions
    • Roles
      • hasRole
      • hasAnyRole
      • hasAllRoles
    • Extras

Instalation

This module is distributed via npm which is bundled with node and should be installed as one of your project's dependencies:

npm install --save kontrolle

Test

npm run test

Build

npm run build

Document

npm run doc

Usage

Initialization

Here's a simple example of library initialization:

import * as kontrolle from 'kontrolle';

const roles = ['userAdmin', 'agencyAdmin'];
const permissions = {
	agencies: {
		basic: {
			action: ['view', 'update']
		},
	},
	users: {
		manage: {
			action: ['create', 'read', 'update']
		}
	}
}
const features = {
	"agencyAdmin": {
	   "agencies": [
	      "basic"
	   ]
	},
	"usersAdmin": {
	   "users": [
	      "manage"
	   ]
	 }
}

kontrolle.init({
	roles,
	permissions,
	features
})

Evaluation

Here are few examples on basic role and permission checks.

Permissions

can

Evaluate if user can do an action over specified feature.

import * as kontrolle from 'kontrolle';

const roles = ...
const permissions = {
	users: {
		manage: {
			action: ['create', 'read', 'update']
		}
	}
}
const features = ...

kontrolle.init({ roles, permissions, features })

const res = kontrolle.can('users', 'manage', 'create')
// true

const res = kontrolle.can('users', 'manage', 'delete')
//false

 

canAny

Evaluate if user can do any of the provided evaluations.

import * as kontrolle from 'kontrolle';

const roles = ...
const permissions = {
	users: {
		manage: {
			action: ['create', 'read', 'update']
		},
		licence: {
			action: ['view']
		}
	}
}
const features = ...

kontrolle.init({ roles, permissions, features })

const res = kontrolle.canAny(['users', 'manage', 'read'], ['users', 'licence', 'view'])
// true

const res = kontrolle.canAny(['users', 'manage', '*'], ['users', 'licence', 'view'])
// true

const res = kontrolle.canAny(['users', 'manage', '*'], ['users', 'licence', 'update'])
// false

 

canAll

Evaluate if user can do all of the provided evaluations.

import * as kontrolle from 'kontrolle';

const roles = ...
const permissions = {
	users: {
		manage: {
			action: ['create', 'read', 'update']
		},
		licence: {
			action: ['view']
		}
	}
}
const features = ...

kontrolle.init({ roles, permissions, features })

const res = kontrolle.canAny(['users', 'manage', 'read'], ['users', 'licence', 'view'])
// true

const res = kontrolle.canAny(['users', 'manage', '*'], ['users', 'licence', 'view'])
// false

 

canAnyAction

Evalute if user can do any of the provided actions over the feature

import * as kontrolle from 'kontrolle';

const roles = ...
const permissions = {
	users: {
		manage: {
			action: ['create', 'read', 'update']
		},
		licence: {
			action: ['view']
		}
	}
}
const features = ...

kontrolle.init({ roles, permissions, features })

const res = kontrolle.canAnyAction('users', 'manage', ['create', 'read'])
// true

const res = kontrolle.canAnyAction('users', 'manage', ['delete', 'read'])
// true

const res = kontrolle.canAnyAction('users', 'manage', ['delete', 'assign'])
// false

 

canAllActions

Evalute if user can do all of the provided actions over the feature

import * as kontrolle from 'kontrolle';

const roles = ...
const permissions = {
	users: {
		manage: {
			action: ['create', 'read', 'update']
		},
		licence: {
			action: ['view']
		}
	}
}
const features = ...

kontrolle.init({ roles, permissions, features })

const res = kontrolle.canAllActions('users', 'manage', ['create', 'read'])
// true

const res = kontrolle.canAllActions('users', 'manage', ['delete', 'read'])
// false

Roles

hasRole

Check if user has a provided role

import * as kontrolle from 'kontrolle';

const roles = ['userAdmin', 'agencyAdmin'];
const permissions = ...
const features = ...

kontrolle.init({ roles, permissions, features })

const res = kontrolle.hasRole('userAdmin')
// role object { name: 'userAdmin' }

const res = kontrolle.hasRole('superadmin')
// false

 

hasAnyRole

Check if user has any of the provided roles

import * as kontrolle from 'kontrolle';

const roles = ['userAdmin', 'agencyAdmin'];
const permissions = ...
const features = ...

kontrolle.init({ roles, permissions, features })

const res = kontrolle.hasAnyRole(['userAdmin', 'superadmin'])
// true

const res = kontrolle.hasAnyRole(['marketing', 'qa']);
// false

 

hasAllRoles

Check if user has all of the provided roles

import * as kontrolle from 'kontrolle';

const roles = ['userAdmin', 'agencyAdmin'];
const permissions = ...
const features = ...

kontrolle.init({ roles, permissions, features })

const res = kontrolle.hasAllRoles(['userAdmin', 'agencyAdmin'])
// true

const res = kontrolle.hasAnyRole(['userAdmin', 'superadmin']);
// false

Extras