KeyAuth

Hertz provides the keyauth extension to help users achieve token authentication. The implementation of the keyauth extension references the Fiber and Echo implementation.

Install

go get github.com/hertz-contrib/keyauth

Example

package main

import (
	"context"

	"github.com/cloudwego/hertz/pkg/app"
	"github.com/cloudwego/hertz/pkg/app/server"
	"github.com/cloudwego/hertz/pkg/common/utils"
	"github.com/cloudwego/hertz/pkg/protocol/consts"
	"github.com/hertz-contrib/keyauth"
)

func main() {
	h := server.Default()
	h.Use(keyauth.New(
		keyauth.WithContextKey("token"),
		keyauth.WithKeyLookUp("query:token", ""),
	))
	h.GET("/ping", func(c context.Context, ctx *app.RequestContext) {
		value, _ := ctx.Get("token")
		ctx.JSON(consts.StatusOK, utils.H{"ping": value})
	})
	h.Spin()
}

Config

WithFilter

The keyauth extension provides WithFilter to help users set custom filtering logic for skipping the keyauth extension, which defaults to nil and is not skipped.

Function signatures:

type KeyAuthFilterHandler func(c context.Context, ctx *app.RequestContext) bool

Sample Code:

package main

import (
	"context"

	"github.com/cloudwego/hertz/pkg/app"
	"github.com/cloudwego/hertz/pkg/app/server"
	"github.com/cloudwego/hertz/pkg/common/utils"
	"github.com/cloudwego/hertz/pkg/protocol/consts"
	"github.com/hertz-contrib/keyauth"
)

func main() {
	h := server.Default()
	h.Use(keyauth.New(
		keyauth.WithFilter(func(c context.Context, ctx *app.RequestContext) bool {
			return string(ctx.GetHeader("admin")) == "test"
		}),
	))
	h.GET("/ping", func(c context.Context, ctx *app.RequestContext) {
		value, _ := ctx.Get("token")
		ctx.JSON(consts.StatusOK, utils.H{"ping": value})
	})
	h.Spin()
}

WithValidator

The keyauth extension provides WithValidator to help users set custom validation logic for token validation, which returns true and nil by default.

Function signatures:

type KeyAuthValidatorHandler func(context.Context, *app.RequestContext, string) (bool, error)

Sample Code:

package main

import (
	"context"

	"github.com/cloudwego/hertz/pkg/app"
	"github.com/cloudwego/hertz/pkg/app/server"
	"github.com/cloudwego/hertz/pkg/common/utils"
	"github.com/cloudwego/hertz/pkg/protocol/consts"
	"github.com/hertz-contrib/keyauth"
)

func main() {
	h := server.Default()
	h.Use(keyauth.New(
		keyauth.WithValidator(func(ctx context.Context, requestContext *app.RequestContext, s string) (bool, error) {
			if s == "test_admin" {
				return true, nil
			}
			return false, nil
		}),
	))
	h.GET("/ping", func(c context.Context, ctx *app.RequestContext) {
		value, _ := ctx.Get("token")
		ctx.JSON(consts.StatusOK, utils.H{"ping": value})
	})
	h.Spin()
}

WithSuccessHandler

The keyauth extension provides WithSuccessHandler to help users set up custom processing logic for verifying that the token has passed.

Sample Code:

package main

import (
	"context"

	"github.com/cloudwego/hertz/pkg/app"
	"github.com/cloudwego/hertz/pkg/app/server"
	"github.com/cloudwego/hertz/pkg/common/utils"
	"github.com/cloudwego/hertz/pkg/protocol/consts"
	"github.com/hertz-contrib/keyauth"
)

func main() {
	h := server.Default()
	h.Use(keyauth.New(
		keyauth.WithSuccessHandler(func(c context.Context, ctx *app.RequestContext) {
			ctx.Next(c)
		}),
	))
	h.GET("/ping", func(c context.Context, ctx *app.RequestContext) {
		value, _ := ctx.Get("token")
		ctx.JSON(consts.StatusOK, utils.H{"ping": value})
	})
	h.Spin()
}

WithErrorHandler

The keyauth extension provides WithErrorHandler to help users set up custom handling logic for verifying token failures.

Function signatures:

type KeyAuthErrorHandler func(context.Context, *app.RequestContext, error)

Default logic:

func errHandler(c context.Context, ctx *app.RequestContext, err error) {
	if err == ErrMissingOrMalformedAPIKey {
		ctx.AbortWithMsg(err.Error(), http.StatusBadRequest)
		return
	}
	ctx.AbortWithMsg(err.Error(), http.StatusUnauthorized)
}

WithKeyLookUp

The keyauth extension provides WithKeyLookUp to help users set keyLookup.

keyLookup is used to extract token from source (supported sources include cookie, header, param, query, form).

The format is <source>:<token_name> and default value isheader:Authorization.

Sample Code:

package main

import (
	"context"

	"github.com/cloudwego/hertz/pkg/app"
	"github.com/cloudwego/hertz/pkg/app/server"
	"github.com/cloudwego/hertz/pkg/common/utils"
	"github.com/cloudwego/hertz/pkg/protocol/consts"
	"github.com/hertz-contrib/keyauth"
)

func main() {
	h := server.Default()
	h.Use(keyauth.New(
		keyauth.WithKeyLookUp("header:token", "Bearer"),
		))
	h.GET("/ping", func(c context.Context, ctx *app.RequestContext) {
		value, _ := ctx.Get("token")
		ctx.JSON(consts.StatusOK, utils.H{"ping": value})
	})
	h.Spin()
}

WithContextKey

The keyauth extension provides WithContextKey to help users set the key corresponding to the token in the request context.

Sample Code:

package main

import (
	"context"

	"github.com/cloudwego/hertz/pkg/app"
	"github.com/cloudwego/hertz/pkg/app/server"
	"github.com/cloudwego/hertz/pkg/common/utils"
	"github.com/cloudwego/hertz/pkg/protocol/consts"
	"github.com/hertz-contrib/keyauth"
)

func main() {
	h := server.Default()
	h.Use(keyauth.New(
		keyauth.WithContextKey("token"),
	))
	h.GET("/ping", func(c context.Context, ctx *app.RequestContext) {
		value, _ := ctx.Get("token")
		ctx.JSON(consts.StatusOK, utils.H{"ping": value})
	})
	h.Spin()
}

Last modified December 2, 2022 : chore: add lark footer link (#460) (f41a884)