feat!: Add JWT

- `RUSTDESK_API_JWT_KEY`如果设置，将会启用JWT，token自动续期功能将失效
- 此功能是为了server端校验token的合法性

lib/jwt/jwt.go

@@ -1,14 +1,13 @@
 package jwt
 
 import (
-	"crypto/rsa"
+	"fmt"
 	"github.com/golang-jwt/jwt/v5"
-	"os"
 	"time"
 )
 
 type Jwt struct {
-	privateKey          *rsa.PrivateKey
+	Key                 []byte
 	TokenExpireDuration time.Duration
 }
 
@@ -17,31 +16,24 @@ type UserClaims struct {
 	jwt.RegisteredClaims
 }
 
-func NewJwt(privateKeyFile string, tokenExpireDuration time.Duration) *Jwt {
-	privateKeyContent, err := os.ReadFile(privateKeyFile)
-	if err != nil {
-		panic(err)
-	}
-	privateKey, err := jwt.ParseRSAPrivateKeyFromPEM(privateKeyContent)
-	if err != nil {
-		panic(err)
-	}
+func NewJwt(key string, tokenExpireDuration time.Duration) *Jwt {
 	return &Jwt{
-		privateKey:          privateKey,
+		Key:                 []byte(key),
 		TokenExpireDuration: tokenExpireDuration,
 	}
 }
 
 func (s *Jwt) GenerateToken(userId uint) string {
-	t := jwt.NewWithClaims(jwt.SigningMethodRS256,
+	t := jwt.NewWithClaims(jwt.SigningMethodHS256,
 		UserClaims{
 			UserId: userId,
 			RegisteredClaims: jwt.RegisteredClaims{
 				ExpiresAt: jwt.NewNumericDate(time.Now().Add(s.TokenExpireDuration)),
 			},
 		})
-	token, err := t.SignedString(s.privateKey)
+	token, err := t.SignedString(s.Key)
 	if err != nil {
+		fmt.Println(err)
 		return ""
 	}
 	return token
@@ -49,7 +41,7 @@ func (s *Jwt) GenerateToken(userId uint) string {
 
 func (s *Jwt) ParseToken(tokenString string) (uint, error) {
 	token, err := jwt.ParseWithClaims(tokenString, &UserClaims{}, func(token *jwt.Token) (interface{}, error) {
-		return s.privateKey.Public(), nil
+		return s.Key, nil
 	})
 	if err != nil {
 		return 0, err