feat: ✨ 支持刷新令牌

app/db.go

@@ -5,6 +5,7 @@ import (
 	"gorm.io/gorm"
 	"math"
 	"strings"
+	"time"
 )
 
 // DB 用户数据操作
@@ -29,6 +30,14 @@ type User struct {
 	Password    string `json:"-"`            // 登录密码
 }
 
+// UserToken 用户令牌
+type UserToken struct {
+	Code         string    `gorm:"primarykey"` // 主键
+	AccessToken  string    // 授权令牌
+	RefreshToken string    // 刷新令牌
+	CreatedAt    time.Time // 创建时间
+}
+
 // Goods 商品
 type Goods struct {
 	gorm.Model

app/fns.go

@@ -1,6 +1,15 @@
 package app
 
-import "golang.org/x/crypto/bcrypt"
+import (
+	"errors"
+	"github.com/go-chi/jwtauth/v5"
+	"github.com/lestrrat-go/jwx/v2/jwt"
+	"github.com/rs/xid"
+	"golang.org/x/crypto/bcrypt"
+	"gorm.io/gorm"
+	"net/http"
+	"time"
+)
 
 func HashPassword(password string) (string, error) {
 	bytes, err := bcrypt.GenerateFromPassword([]byte(password), 14)
@@ -11,3 +20,87 @@ func CheckPasswordHash(password, hash string) bool {
 	err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(password))
 	return err == nil
 }
+
+func GenerateAuthToken(r *Request, uid uint) (*UserToken, error) {
+	code := xid.New().String()
+
+	rawToken, err := jwt.NewBuilder().
+		//Audience().
+		Expiration(time.Now().Add(time.Hour*24)).
+		Issuer(r.URL.Hostname()).
+		IssuedAt(time.Now()).
+		//JwtID().
+		//NotBefore().
+		//Subject().
+		Claim("uid", uid).
+		Claim("code", code).
+		Build()
+	if err != nil {
+		return nil, err
+	}
+
+	claims, err := rawToken.AsMap(r.Context())
+	if err != nil {
+		return nil, err
+	}
+
+	_, accessToken, err := tokenAuth.Encode(claims)
+	if err != nil {
+		return nil, NewError(1, "生成授权令牌失败")
+	}
+
+	if err = rawToken.Set(jwt.ExpirationKey, time.Now().Add(time.Hour*24*30)); err != nil {
+		return nil, err
+	}
+	if claims, err = rawToken.AsMap(r.Context()); err != nil {
+		return nil, err
+	}
+	_, refreshToken, err := tokenAuth.Encode(claims)
+	if err != nil {
+		return nil, NewError(1, "生成刷新令牌失败")
+	}
+
+	return &UserToken{
+		Code:         code,
+		AccessToken:  accessToken,
+		RefreshToken: refreshToken,
+		CreatedAt:    time.Now(),
+	}, nil
+}
+
+func AuthInfo(r *Request) (*UserToken, uint, error) {
+	token, _, err := jwtauth.FromContext(r.Context())
+	if err != nil {
+		return nil, 0, err
+	}
+
+	ex := NewError(403, "错误令牌")
+	ex.Status = http.StatusForbidden
+
+	code, ok := token.Get("code")
+	if !ok {
+		return nil, 0, nil
+	}
+	if _, ok = code.(string); !ok {
+		return nil, 0, ex
+	}
+
+	uidUint, ok := token.Get("uid")
+	if !ok {
+		return nil, 0, ex
+	}
+	uid, ok := uidUint.(uint)
+	if !ok {
+		return nil, 0, ex
+	}
+
+	var ut UserToken
+	if err = DB.First(&ut, "code = ?", code).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, 0, ex
+		}
+		return nil, 0, err
+	}
+
+	return &ut, uid, nil
+}

app/rts.go

@@ -190,7 +190,6 @@ func ListUser(w *ResponseWriter, r *Request) {
 func Login(w *ResponseWriter, r *Request) {
 	var phoneNumber string
 	var password string
-	var token string
 	var ok bool
 
 	// 提交的手机号码
@@ -215,35 +214,71 @@ func Login(w *ResponseWriter, r *Request) {
 		return
 	}
 
-	// 提交的设备码
-	if token, ok = r.Get("token"); !ok || len(token) == 0 {
-		w.Error(NewError(2, "缺少设备码"))
+	// 查询用户是否存在
+	var user User
+	if err := DB.First(&user, "phone_number = ?", phoneNumber).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			err = NewError(1, "手机号码或密码错误")
+		}
+		w.Error(err)
 		return
 	}
 
-	// 查询用户是否存在
-	var user User
-	err := DB.First(&user, "phone_number = ?", phoneNumber).Error
-	if errors.Is(err, gorm.ErrRecordNotFound) {
+	// 验证密码
+	if !CheckPasswordHash(password, user.Password) {
 		w.Error(NewError(1, "手机号码或密码错误"))
-	} else if err != nil {
+		return
+	}
+
+	ut, err := GenerateAuthToken(r, user.ID)
+	if err == nil {
+		err = DB.Create(&ut).Error
+	}
+	if err != nil {
 		w.Error(err)
-	} else {
-		if !CheckPasswordHash(password, user.Password) {
-			w.Error(NewError(1, "手机号码或密码错误"))
-			return
-		}
-		_, tokenString, err := tokenAuth.Encode(map[string]any{"uid": user.ID, "tkn": token})
-		if err != nil {
-			LogError(err)
-			w.Error(NewError(1, "登录失败"))
-			return
+		return
+	}
+
+	w.Ok(map[string]any{
+		"user":          user,
+		"access_token":  ut.AccessToken,
+		"refresh_token": ut.RefreshToken,
+	}, "登录成功")
+}
+
+// RefreshToken 刷新授权令牌
+func RefreshToken(w *ResponseWriter, r *Request) {
+	// 获取刷新令牌信息
+	ut, uid, err := AuthInfo(r)
+	if err != nil {
+		w.Error(err)
+		return
+	}
+
+	// 生成新的令牌
+	ut2, err := GenerateAuthToken(r, uid)
+	if err != nil {
+		w.Error(err)
+		return
+	}
+
+	// 删除旧的令牌，保持新的令牌
+	err = DB.Transaction(func(tx *gorm.DB) error {
+		if err := tx.Delete(&ut).Error; err != nil {
+			return err
 		}
-		w.Ok(map[string]any{
-			"user":  user,
-			"token": tokenString,
-		}, "登录成功")
+		return tx.Create(&ut2).Error
+	})
+
+	if err != nil {
+		w.Error(err)
+		return
 	}
+
+	w.Ok(map[string]any{
+		"access_token":  ut.AccessToken,
+		"refresh_token": ut.RefreshToken,
+	}, "刷新令牌成功")
 }
 
 // CreateGoods 创建商品

go.mod

@@ -5,6 +5,8 @@ go 1.19
 require (
 	github.com/go-chi/chi/v5 v5.0.8
 	github.com/go-chi/jwtauth/v5 v5.1.0
+	github.com/rs/xid v1.4.0
+	golang.org/x/crypto v0.0.0-20220427172511-eb4f295cb31f
 	gorm.io/driver/sqlite v1.4.3
 	gorm.io/gorm v1.24.2
 )
@@ -21,5 +23,4 @@ require (
 	github.com/lestrrat-go/jwx/v2 v2.0.6 // indirect
 	github.com/lestrrat-go/option v1.0.0 // indirect
 	github.com/mattn/go-sqlite3 v1.14.15 // indirect
-	golang.org/x/crypto v0.0.0-20220427172511-eb4f295cb31f // indirect
 )

go.sum

@@ -31,6 +31,8 @@ github.com/mattn/go-sqlite3 v1.14.15 h1:vfoHhTN1af61xCRSWzFIWzx2YskyMTwHLrExkBOj
 github.com/mattn/go-sqlite3 v1.14.15/go.mod h1:2eHXhiwb8IkHr+BDWZGa96P6+rkvnG63S2DGjv9HUNg=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/rs/xid v1.4.0 h1:qd7wPTDkN6KQx2VmMBLrpHkiyQwgFXRnkOLacUiaSNY=
+github.com/rs/xid v1.4.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=