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Casbin -> Fiber v3 #1116

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Casbin -> Fiber v3 #1116

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9df17fe
upgrade casbin to fiber v3
Aleksei-Badyaev May 29, 2024
0310cb9
added version suffix v2 for casbin
Aleksei-Badyaev May 29, 2024
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50 changes: 28 additions & 22 deletions casbin/README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -12,19 +12,24 @@ id: casbin

Casbin middleware for Fiber.

**Note: Requires Go 1.18 and above**
> **Note**
Requires Go 1.18 and above

## Install
```
go get -u github.com/gofiber/fiber/v2

```shell
go get -u github.com/gofiber/fiber/v3
go get -u github.com/gofiber/contrib/casbin
```
choose an adapter from [here](https://casbin.org/docs/en/adapters)
```

choose an adapter from [here](https://casbin.org/docs/adapters)

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

## Signature

```go
casbin.New(config ...casbin.Config) *casbin.Middleware
```
Expand All @@ -36,11 +41,12 @@ casbin.New(config ...casbin.Config) *casbin.Middleware
| 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` |
| 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

- [Gorm Adapter](https://github.com/svcg/-fiber_casbin_demo)
- [File Adapter](https://github.com/gofiber/contrib/casbin/tree/master/example)

Expand All @@ -50,7 +56,7 @@ casbin.New(config ...casbin.Config) *casbin.Middleware
package main

import (
"github.com/gofiber/fiber/v2"
"github.com/gofiber/fiber/v3"
"github.com/gofiber/contrib/casbin"
_ "github.com/go-sql-driver/mysql"
"github.com/casbin/xorm-adapter/v2"
Expand All @@ -62,23 +68,23 @@ func main() {
authz := casbin.New(casbin.Config{
ModelFilePath: "path/to/rbac_model.conf",
PolicyAdapter: xormadapter.NewAdapter("mysql", "root:@tcp(127.0.0.1:3306)/"),
Lookup: func(c *fiber.Ctx) string {
Lookup: func(c fiber.Ctx) string {
// fetch authenticated user subject
},
})

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

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

app.Listen(":8080")
Expand All @@ -91,7 +97,7 @@ func main() {
package main

import (
"github.com/gofiber/fiber/v2"
"github.com/gofiber/fiber/v3"
"github.com/gofiber/contrib/casbin"
_ "github.com/go-sql-driver/mysql"
"github.com/casbin/xorm-adapter/v2"
Expand All @@ -103,17 +109,17 @@ func main() {
authz := casbin.New(casbin.Config{
ModelFilePath: "path/to/rbac_model.conf",
PolicyAdapter: xormadapter.NewAdapter("mysql", "root:@tcp(127.0.0.1:3306)/"),
Lookup: func(c *fiber.Ctx) string {
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 {
func(c fiber.Ctx) error {
// your handler
},
authz.RoutePermission(),
)

app.Listen(":8080")
Expand All @@ -126,7 +132,7 @@ func main() {
package main

import (
"github.com/gofiber/fiber/v2"
"github.com/gofiber/fiber/v3"
"github.com/gofiber/contrib/casbin"
_ "github.com/go-sql-driver/mysql"
"github.com/casbin/xorm-adapter/v2"
Expand All @@ -138,16 +144,16 @@ func main() {
authz := casbin.New(casbin.Config{
ModelFilePath: "path/to/rbac_model.conf",
PolicyAdapter: xormadapter.NewAdapter("mysql", "root:@tcp(127.0.0.1:3306)/"),
Lookup: func(c *fiber.Ctx) string {
Lookup: func(c fiber.Ctx) string {
// fetch authenticated user subject
},
})

app.Put("/blog/:id",
authz.RequiresRoles([]string{"admin"}),
func(c *fiber.Ctx) error {
func(c fiber.Ctx) error {
// your handler
},
authz.RequiresRoles([]string{"admin"}),
)

app.Listen(":8080")
Expand Down
11 changes: 5 additions & 6 deletions casbin/casbin.go
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@ package casbin
import (
"fmt"

"github.com/gofiber/fiber/v2"
"github.com/gofiber/fiber/v3"
)

// Middleware ...
Expand All @@ -15,7 +15,7 @@ type Middleware struct {
func New(config ...Config) *Middleware {
cfg, err := configDefault(config...)
if err != nil {
panic(fmt.Errorf("Fiber: casbin middleware error -> %w", err))
panic(fmt.Errorf("fiber: casbin middleware error -> %w", err))
}

return &Middleware{
Expand All @@ -28,7 +28,7 @@ func New(config ...Config) *Middleware {
func (m *Middleware) RequiresPermissions(permissions []string, opts ...Option) fiber.Handler {
options := optionsDefault(opts...)

return func(c *fiber.Ctx) error {
return func(c fiber.Ctx) error {
if len(permissions) == 0 {
return c.Next()
}
Expand Down Expand Up @@ -59,7 +59,6 @@ func (m *Middleware) RequiresPermissions(permissions []string, opts ...Option) f
}
return m.config.Forbidden(c)
}

return c.Next()
}
}
Expand All @@ -68,7 +67,7 @@ func (m *Middleware) RequiresPermissions(permissions []string, opts ...Option) f
// subject has the required permissions according to predefined Casbin policies.
// This method uses http Path and Method as object and action.
func (m *Middleware) RoutePermission() fiber.Handler {
return func(c *fiber.Ctx) error {
return func(c fiber.Ctx) error {
sub := m.config.Lookup(c)
if len(sub) == 0 {
return m.config.Unauthorized(c)
Expand All @@ -89,7 +88,7 @@ func (m *Middleware) RoutePermission() fiber.Handler {
func (m *Middleware) RequiresRoles(roles []string, opts ...Option) fiber.Handler {
options := optionsDefault(opts...)

return func(c *fiber.Ctx) error {
return func(c fiber.Ctx) error {
if len(roles) == 0 {
return c.Next()
}
Expand Down
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