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Example code of casbin/casbin

Informations about the package casbin

PHP-Casbin

Scrutinizer Code Quality Default Coverage Status Latest Stable Version Total Downloads License Gitter

Documentation | Tutorials | Extensions

Breaking News: Laravel-authz is now available, an authorization library for the Laravel framework.

PHP-Casbin is a powerful and efficient open-source access control library for PHP projects. It provides support for enforcing authorization based on various access control models.

All the languages supported by Casbin:

golang java nodejs php
Casbin jCasbin node-Casbin PHP-Casbin
production-ready production-ready production-ready production-ready
python dotnet c++ rust
PyCasbin Casbin.NET Casbin-CPP Casbin-RS
production-ready production-ready beta-test production-ready

Installation

Require this package in the composer.json of your project. This will download the package:

Get started

  1. New a Casbin enforcer with a model file and a policy file:

  2. Add an enforcement hook into your code right before the access happens:

Table of contents

Supported models

  1. ACL (Access Control List)
  2. ACL with superuser
  3. ACL without users: especially useful for systems that don't have authentication or user log-ins.
  4. ACL without resources: some scenarios may target for a type of resources instead of an individual resource by using permissions like write-article, read-log. It doesn't control the access to a specific article or log.
  5. RBAC (Role-Based Access Control)
  6. RBAC with resource roles: both users and resources can have roles (or groups) at the same time.
  7. RBAC with domains/tenants: users can have different role sets for different domains/tenants.
  8. ABAC (Attribute-Based Access Control): syntax sugar like resource.Owner can be used to get the attribute for a resource.
  9. RESTful: supports paths like /res/*, /res/:id and HTTP methods like GET, POST, PUT, DELETE.
  10. Deny-override: both allow and deny authorizations are supported, deny overrides the allow.
  11. Priority: the policy rules can be prioritized like firewall rules.

How it works?

In php-casbin, an access control model is abstracted into a CONF file based on the PERM metamodel (Policy, Effect, Request, Matchers). So switching or upgrading the authorization mechanism for a project is just as simple as modifying a configuration. You can customize your own access control model by combining the available models. For example, you can get RBAC roles and ABAC attributes together inside one model and share one set of policy rules.

The most basic and simplest model in php-casbin is ACL. ACL's model CONF is:

An example policy for ACL model is like:

It means:

Features

What php-casbin does:

  1. enforce the policy in the classic {subject, object, action} form or a customized form as you defined, both allow and deny authorizations are supported.
  2. handle the storage of the access control model and its policy.
  3. manage the role-user mappings and role-role mappings (aka role hierarchy in RBAC).
  4. support built-in superuser like root or administrator. A superuser can do anything without explict permissions.
  5. multiple built-in operators to support the rule matching. For example, keyMatch can map a resource key /foo/bar to the pattern /foo*.

What php-casbin does NOT do:

  1. authentication (aka verify username and password when a user logs in)
  2. manage the list of users or roles. I believe it's more convenient for the project itself to manage these entities. Users usually have their passwords, and php-casbin is not designed as a password container. However, php-casbin stores the user-role mapping for the RBAC scenario.

Documentation

https://casbin.org/docs/en/overview

Online editor

You can also use the online editor (http://casbin.org/editor/) to write your php-casbin model and policy in your web browser. It provides functionality such as syntax highlighting and code completion, just like an IDE for a programming language.

Tutorials

https://casbin.org/docs/tutorials

Policy management

php-casbin provides two sets of APIs to manage permissions:

model editor

policy editor

Policy persistence

https://casbin.org/docs/en/adapters

Role manager

https://casbin.org/docs/en/role-managers

Examples

Model Model file Policy file
ACL basic_model.conf basic_policy.csv
ACL with superuser basic_model_with_root.conf basic_policy.csv
ACL without users basic_model_without_users.conf basic_policy_without_users.csv
ACL without resources basic_model_without_resources.conf basic_policy_without_resources.csv
RBAC rbac_model.conf rbac_policy.csv
RBAC with resource roles rbac_model_with_resource_roles.conf rbac_policy_with_resource_roles.csv
RBAC with domains/tenants rbac_model_with_domains.conf rbac_policy_with_domains.csv
ABAC abac_model.conf N/A
RESTful keymatch_model.conf keymatch_policy.csv
Deny-override rbac_model_with_deny.conf rbac_policy_with_deny.csv
Priority priority_model.conf priority_policy.csv

Middlewares

Authz middlewares for web frameworks: https://casbin.org/docs/en/middlewares

Our adopters

https://casbin.org/docs/en/adopters

Contributors

This project exists thanks to all the people who contribute.

Backers

Thank you to all our backers! 🙏 [Become a backer]

Sponsors

Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [Become a sponsor]

License

This project is licensed under the Apache 2.0 license.

Contact

If you have any issues or feature requests, please contact us. PR is welcomed.

All versions of casbin with dependencies

PHP Build Version
Package Version
Requires php Version >=7.1.0
symfony/expression-language Version ^3.4|^4.0|^5.0|^6.0
s1lentium/iptools Version ^1.1
Composer command for our command line client (download client) This client runs in each environment. You don't need a specific PHP version etc. The first 20 API calls are free. Standard composer command

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