PHP 中基於 Casbin 做 RBAC + RESTful 許可權控制

techlee發表於2019-09-06

PHP-Casbin 是一個強大的、高效的開源訪問控制框架,它支援基於各種訪問控制模型(RBAC ABAC ACL)的許可權管理。

這裡使用官方提供的資料庫介面卡擴充套件:Database adapter.

安裝

通過composer安裝:

composer require casbin/casbin
composer require casbin/database-adapter

使用 RBAC Model

model.conf 如下:

[request_definition]
r = sub, obj, act

[policy_definition]
p = sub, obj, act

#  RBAC角色繼承關係的定義
[role_definition]
g = _, _

[policy_effect]
e = some(where (p.eft == allow))

[matchers]
m = g(r.sub, p.sub) && keyMatch2(r.obj, p.obj) && regexMatch(r.act, p.act)

初始化一個Casbin enforcer

use Casbin\Enforcer;
use CasbinAdapter\Database\Adapter;

$adapter = Adapter::newAdapter([
    'type'     => 'mysql', 
    'hostname' => '127.0.0.1',
    'database' => 'test',
    'username' => 'root',
]);

$enforcer = new Enforcer('path/to/model.conf', $adapter);

新增策略

給alice和bob分配角色:

// alice has the admin role
$enforcer->addRoleForUser('alice', 'admin'); 
// bob has the member role
$enforcer->addRoleForUser('bob', 'member');

給member角色分配許可權,member 角色僅對foo資源有檢視許可權:

$enforcer->addPermissionForUser('member', '/foo', 'GET');
$enforcer->addPermissionForUser('member', '/foo/:id', 'GET');

admin角色對foo擁有增刪改查許可權:

// admin inherits all permissions of member
$enforcer->addRoleForUser('admin', 'member');

$enforcer->addPermissionForUser('admin', '/foo', 'POST');
$enforcer->addPermissionForUser('admin', '/foo/:id', 'PUT');
$enforcer->addPermissionForUser('admin', '/foo/:id', 'DELETE');

分配完角色和許可權後,資料庫中的策略規則大致如下:

g, alice, admin
g, bob, member

p, memeber, /foo, GET
p, memeber, /foo/:id, GET

g, admin, member

p, admin, /foo, POST
p, admin, /foo/:id, PUT
p, admin, /foo/:id, DELETE

驗證許可權

alice 具有admin角色,繼承adminmember兩個角色的全部許可權.

$enforcer->enforce('alice', '/foo', 'GET'); // true
$enforcer->enforce('alice', '/foo', 'GET'); // true

$enforcer->enforce('alice', '/foo', 'POST'); // true
$enforcer->enforce('alice', '/foo/1', 'PUT'); // true
$enforcer->enforce('alice', '/foo/1', 'DELETE'); // true

bob 具有member角色, 只繼承member的許可權.

$enforcer->enforce('bob', '/foo', 'GET'); // true
$enforcer->enforce('bob', '/foo', 'GET'); // true

$enforcer->enforce('bob', '/foo', 'POST'); // false
$enforcer->enforce('bob', '/foo/1', 'PUT'); // false
$enforcer->enforce('bob', '/foo/1', 'DELETE'); // false

文章轉發原始連結:https://www.tech1024.com/collect/5/3016.ht....

相關文章