æ·feat: commplete init process

pkg/util/jwt.go

@@ -0,0 +1,50 @@
+package util
+
+import (
+	"time"
+
+	"github.com/dgrijalva/jwt-go"
+)
+
+var jwtSecret []byte
+
+type Claims struct {
+	Username string `json:"username"`
+	Password string `json:"password"`
+	jwt.StandardClaims
+}
+
+// GenerateToken generate tokens used for auth
+func GenerateToken(username, password string) (string, error) {
+	nowTime := time.Now()
+	expireTime := nowTime.Add(7 * 24 * time.Hour)
+
+	claims := Claims{
+		username,
+		EncodeMD5(password),
+		jwt.StandardClaims{
+			ExpiresAt: expireTime.Unix(),
+			Issuer:    "message-nest",
+		},
+	}
+
+	tokenClaims := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	token, err := tokenClaims.SignedString(jwtSecret)
+
+	return token, err
+}
+
+// ParseToken parsing token
+func ParseToken(token string) (*Claims, error) {
+	tokenClaims, err := jwt.ParseWithClaims(token, &Claims{}, func(token *jwt.Token) (interface{}, error) {
+		return jwtSecret, nil
+	})
+
+	if tokenClaims != nil {
+		if claims, ok := tokenClaims.Claims.(*Claims); ok && tokenClaims.Valid {
+			return claims, nil
+		}
+	}
+
+	return nil, err
+}