add backend tpl

backend/providers/jwt/config.go

@@ -0,0 +1,35 @@
+package jwt
+
+import (
+	"time"
+
+	log "github.com/sirupsen/logrus"
+
+	"git.ipao.vip/rogeecn/atom/container"
+	"git.ipao.vip/rogeecn/atom/utils/opt"
+)
+
+const DefaultPrefix = "JWT"
+
+func DefaultProvider() container.ProviderContainer {
+	return container.ProviderContainer{
+		Provider: Provide,
+		Options: []opt.Option{
+			opt.Prefix(DefaultPrefix),
+		},
+	}
+}
+
+type Config struct {
+	SigningKey  string // jwt签名
+	ExpiresTime string // 过期时间
+	Issuer      string // 签发者
+}
+
+func (c *Config) ExpiresTimeDuration() time.Duration {
+	d, err := time.ParseDuration(c.ExpiresTime)
+	if err != nil {
+		log.Fatal(err)
+	}
+	return d
+}

backend/providers/jwt/jwt.go

@@ -0,0 +1,115 @@
+package jwt
+
+import (
+	"errors"
+	"strings"
+	"time"
+
+	"git.ipao.vip/rogeecn/atom/container"
+	"git.ipao.vip/rogeecn/atom/utils/opt"
+
+	jwt "github.com/golang-jwt/jwt/v4"
+	"golang.org/x/sync/singleflight"
+)
+
+const (
+	CtxKey     = "claims"
+	HttpHeader = "Authorization"
+)
+
+type BaseClaims struct {
+	UID  uint64 `json:"uid,omitempty"`
+	Role uint64 `json:"role,omitempty"`
+}
+
+// Custom claims structure
+type Claims struct {
+	BaseClaims
+	jwt.RegisteredClaims
+}
+
+const TOKEN_PREFIX = "Bearer "
+
+type JWT struct {
+	singleflight *singleflight.Group
+	config       *Config
+	SigningKey   []byte
+}
+
+var (
+	TokenExpired     = errors.New("Token is expired")
+	TokenNotValidYet = errors.New("Token not active yet")
+	TokenMalformed   = errors.New("That's not even a token")
+	TokenInvalid     = errors.New("Couldn't handle this token:")
+)
+
+func Provide(opts ...opt.Option) error {
+	o := opt.New(opts...)
+	var config Config
+	if err := o.UnmarshalConfig(&config); err != nil {
+		return err
+	}
+	return container.Container.Provide(func() (*JWT, error) {
+		return &JWT{
+			config:     &config,
+			SigningKey: []byte(config.SigningKey),
+		}, nil
+	}, o.DiOptions()...)
+}
+
+func (j *JWT) CreateClaims(baseClaims BaseClaims) *Claims {
+	ep, _ := time.ParseDuration(j.config.ExpiresTime)
+	claims := Claims{
+		BaseClaims: baseClaims,
+		RegisteredClaims: jwt.RegisteredClaims{
+			NotBefore: jwt.NewNumericDate(time.Now().Add(-time.Second * 10)), // 签名生效时间
+			ExpiresAt: jwt.NewNumericDate(time.Now().Add(ep)),                // 过期时间 7天  配置文件
+			Issuer:    j.config.Issuer,                                       // 签名的发行者
+		},
+	}
+	return &claims
+}
+
+// 创建一个token
+func (j *JWT) CreateToken(claims *Claims) (string, error) {
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	return token.SignedString(j.SigningKey)
+}
+
+// CreateTokenByOldToken 旧token 换新token 使用归并回源避免并发问题
+func (j *JWT) CreateTokenByOldToken(oldToken string, claims *Claims) (string, error) {
+	v, err, _ := j.singleflight.Do("JWT:"+oldToken, func() (interface{}, error) {
+		return j.CreateToken(claims)
+	})
+	return v.(string), err
+}
+
+// 解析 token
+func (j *JWT) ParseToken(tokenString string) (*Claims, error) {
+	tokenString = strings.TrimPrefix(tokenString, TOKEN_PREFIX)
+	token, err := jwt.ParseWithClaims(tokenString, &Claims{}, func(token *jwt.Token) (i interface{}, e error) {
+		return j.SigningKey, nil
+	})
+	if err != nil {
+		if ve, ok := err.(*jwt.ValidationError); ok {
+			if ve.Errors&jwt.ValidationErrorMalformed != 0 {
+				return nil, TokenMalformed
+			} else if ve.Errors&jwt.ValidationErrorExpired != 0 {
+				// Token is expired
+				return nil, TokenExpired
+			} else if ve.Errors&jwt.ValidationErrorNotValidYet != 0 {
+				return nil, TokenNotValidYet
+			} else {
+				return nil, TokenInvalid
+			}
+		}
+	}
+	if token != nil {
+		if claims, ok := token.Claims.(*Claims); ok && token.Valid {
+			return claims, nil
+		}
+		return nil, TokenInvalid
+	} else {
+		return nil, TokenInvalid
+	}
+}