abac

This is a Javascript implementation of Attribute Based Access Control use in Lifeomic products.

This module is suitable for use in both UIs and backend node.js services.

Installation

yarn install @lifeomic/abac

Terminology

• Rules
  • Comparison
    • endsWith: value being checked that ends with an exact string value
    • equals: value being checked is exactly equal to the value defined in the ABAC policy
    • in: value being checked is contained within the array in ABAC policy
    • includes: array of values includes the value in the ABAC policy
    • notEquals: value being checked does not equal the value defined in the ABAC policy
    • notIn: value not in ABAC array
    • notIncludes: array of values does not include the value in the ABAC policy
    • prefixOf: value being checked is a prefix of the value defined in the ABAC policy
    • startsWith: value being checked starts with an exact string value
    • subset: array of values is a subset of the array in the ABAC policy
    • suffixOf: value being checked is a suffix of the value defined in the ABAC policy
    • superset: array of values is a superset of the array in the ABAC policy
  • Target
    • Value of another attribute
  • Value
    • Literal value

Usage

TypeScript usage:

import * as abac from '@lifeomic/abac';

abac.validate(policy);
abac.merge(policies);
abac.reduce(policy, attributes);
abac.extract(policy, privileges, attribute);
abac.enforce(operationName, policy, attributes);
abac.enforceLenient(operationName, policy, attributes);
abac.enforceAny(operationName, policy, attributes);
abac.privileges(policy, attributes);
abac.privilegesLenient(policy, attributes);
abac.policyRequiresAttribute(policy, attribute);

See unit tests in /test folder - many good examples.

Release process

Increment the version in package.json, make a PR, merge the PR, and then finally create a new release using the github UI. Creating the release will publish the head of master to npm. Name the release vX.Y.Z to match the version in package.json.