fiber-casbin

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Casbin middleware for Fiber

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# HAS BEEN MOVED TO https://github.com/gofiber/contrib/tree/main/casbin

### 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](https://casbin.org/docs/en/adapters)
```
go get -u github.com/casbin/xorm-adapter
```

### Signature
```go
fibercasbin.New(config ...fibercasbin.Config) *fibercasbin.CasbinMiddleware
```

### Examples
- [Gorm Adapter](https://github.com/svcg/-fiber_casbin_demo)
- [File Adapter](https://github.com/arsmn/fiber-casbin/tree/master/example)

### CustomPermission

```go
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()

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

```go
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()

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

app.Listen(":8080")
}
```

### RoleAuthorization

```go
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

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