108 lines
2.5 KiB
Go
108 lines
2.5 KiB
Go
|
package usecase
|
|||
|
|
|
|||
|
|
import (
|
|||
|
|
"crypto/sha256"
|
|||
|
|
"encoding/hex"
|
|||
|
|
"fmt"
|
|||
|
|
"time"
|
|||
|
|
|
|||
|
|
"backend/pkg/permission/domain/entity"
|
|||
|
|
|
|||
|
|
"github.com/golang-jwt/jwt/v4"
|
|||
|
|
)
|
|||
|
|
|
|||
|
|
var accessTokenGenerator = createAccessToken
|
|||
|
|
var refreshTokenGenerator = createRefreshToken
|
|||
|
|
|
|||
|
|
// createAccessToken 生成訪問令牌（Access Token）
|
|||
|
|
func createAccessToken(token entity.Token, data any, secretKey string) (string, error) {
|
|||
|
|
claims := entity.Claims{
|
|||
|
|
Data: data,
|
|||
|
|
RegisteredClaims: jwt.RegisteredClaims{
|
|||
|
|
ID: token.ID,
|
|||
|
|
ExpiresAt: jwt.NewNumericDate(time.Unix(int64(token.ExpiresIn), 0)),
|
|||
|
|
Issuer: "permission",
|
|||
|
|
},
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
accessToken, err := jwt.NewWithClaims(jwt.SigningMethodHS256, claims).
|
|||
|
|
SignedString([]byte(secretKey))
|
|||
|
|
if err != nil {
|
|||
|
|
return "", err
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return accessToken, nil
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// createRefreshToken 基於訪問令牌生成刷新令牌（Refresh Token）
|
|||
|
|
func createRefreshToken(accessToken string) string {
|
|||
|
|
hash := sha256.New()
|
|||
|
|
_, _ = hash.Write([]byte(accessToken))
|
|||
|
|
|
|||
|
|
return hex.EncodeToString(hash.Sum(nil))
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func parseToken(accessToken string, secret string, validate bool) (jwt.MapClaims, error) {
|
|||
|
|
// 跳過驗證的解析
|
|||
|
|
var token *jwt.Token
|
|||
|
|
var err error
|
|||
|
|
|
|||
|
|
if validate {
|
|||
|
|
token, err = jwt.Parse(accessToken, func(token *jwt.Token) (interface{}, error) {
|
|||
|
|
if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
|
|||
|
|
return nil, fmt.Errorf("token unexpected signing method: %v", token.Header["alg"])
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return []byte(secret), nil
|
|||
|
|
})
|
|||
|
|
if err != nil {
|
|||
|
|
return jwt.MapClaims{}, err
|
|||
|
|
}
|
|||
|
|
} else {
|
|||
|
|
parser := jwt.NewParser(jwt.WithoutClaimsValidation())
|
|||
|
|
token, err = parser.Parse(accessToken, func(_ *jwt.Token) (any, error) {
|
|||
|
|
return []byte(secret), nil
|
|||
|
|
})
|
|||
|
|
if err != nil {
|
|||
|
|
return jwt.MapClaims{}, err
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
claims, ok := token.Claims.(jwt.MapClaims)
|
|||
|
|
if !ok && token.Valid {
|
|||
|
|
return jwt.MapClaims{}, fmt.Errorf("token valid error")
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return claims, nil
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func parseClaims(accessToken string, secret string, validate bool) (tokenClaims, error) {
|
|||
|
|
claimMap, err := parseToken(accessToken, secret, validate)
|
|||
|
|
if err != nil {
|
|||
|
|
return tokenClaims{}, err
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
claimsData, ok := claimMap["data"].(map[string]any)
|
|||
|
|
if ok {
|
|||
|
|
return convertMap(claimsData), nil
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return tokenClaims{}, fmt.Errorf("get data from claim map error")
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func convertMap(input map[string]interface{}) map[string]string {
|
|||
|
|
output := make(map[string]string)
|
|||
|
|
for key, value := range input {
|
|||
|
|
switch v := value.(type) {
|
|||
|
|
case string:
|
|||
|
|
output[key] = v
|
|||
|
|
case fmt.Stringer:
|
|||
|
|
output[key] = v.String()
|
|||
|
|
default:
|
|||
|
|
output[key] = fmt.Sprintf("%v", value)
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return output
|
|||
|
|
}
|