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fiber-casbin's Introduction

Casbin

Casbin middleware for Fiber

Install

go get -u github.com/gofiber/fiber/v2
go get -u github.com/arsmn/fiber-casbin/v2

choose an adapter from here

go get -u github.com/casbin/xorm-adapter

Signature

fibercasbin.New(config ...fibercasbin.Config) *fibercasbin.CasbinMiddleware

Config

Property Type Description Default
ModelFilePath string Model file path "./model.conf"
PolicyAdapter persist.Adapter Database adapter for policies ./policy.csv
Enforcer *casbin.Enforcer Custom casbin enforcer Middleware generated enforcer using ModelFilePath & PolicyAdapter
Lookup func(*fiber.Ctx) string Look up for current subject ""
Unauthorized func(*fiber.Ctx) error Response body for unauthorized responses Unauthorized
Forbidden func(*fiber.Ctx) error Response body for forbidden responses Forbidden

Examples

CustomPermission

package main

import (
  "github.com/gofiber/fiber/v2"
  "github.com/arsmn/fiber-casbin/v2"
  _ "github.com/go-sql-driver/mysql"
  "github.com/casbin/xorm-adapter/v2"
)

func main() {
  app := fiber.New()

  authz := fibercasbin.New(fibercasbin.Config{
      ModelFilePath: "path/to/rbac_model.conf",
      PolicyAdapter: xormadapter.NewAdapter("mysql", "root:@tcp(127.0.0.1:3306)/"),
      Lookup: func(c *fiber.Ctx) string {
          // fetch authenticated user subject
      },
  })

  app.Post("/blog",
      authz.RequiresPermissions([]string{"blog:create"}, fibercasbin.WithValidationRule(fibercasbin.MatchAllRule)),
      func(c *fiber.Ctx) error {
        // your handler
      },
  )
  
  app.Delete("/blog/:id",
    authz.RequiresPermissions([]string{"blog:create", "blog:delete"}, fibercasbin.WithValidationRule(fibercasbin.AtLeastOneRule)),
    func(c *fiber.Ctx) error {
      // your handler
    },
  )

  app.Listen(":8080")
}

RoutePermission

package main

import (
  "github.com/gofiber/fiber/v2"
  "github.com/arsmn/fiber-casbin/v2"
  _ "github.com/go-sql-driver/mysql"
  "github.com/casbin/xorm-adapter/v2"
)

func main() {
  app := fiber.New()

  authz := fibercasbin.New(fibercasbin.Config{
      ModelFilePath: "path/to/rbac_model.conf",
      PolicyAdapter: xormadapter.NewAdapter("mysql", "root:@tcp(127.0.0.1:3306)/"),
      Lookup: func(c *fiber.Ctx) string {
          // fetch authenticated user subject
      },
  })

  // check permission with Method and Path
  app.Post("/blog",
    authz.RoutePermission(),
    func(c *fiber.Ctx) error {
      // your handler
    },
  )

  app.Listen(":8080")
}

RoleAuthorization

package main

import (
  "github.com/gofiber/fiber/v2"
  "github.com/arsmn/fiber-casbin/v2"
  _ "github.com/go-sql-driver/mysql"
  "github.com/casbin/xorm-adapter/v2"
)

func main() {
  app := fiber.New()

  authz := fibercasbin.New(fibercasbin.Config{
      ModelFilePath: "path/to/rbac_model.conf",
      PolicyAdapter: xormadapter.NewAdapter("mysql", "root:@tcp(127.0.0.1:3306)/"),
      Lookup: func(c *fiber.Ctx) string {
          // fetch authenticated user subject
      },
  })
  
  app.Put("/blog/:id",
    authz.RequiresRoles([]string{"admin"}),
    func(c *fiber.Ctx) error {
      // your handler
    },
  )

  app.Listen(":8080")
}

fiber-casbin's People

Contributors

arsmn avatar

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