58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
package utils
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import (
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"GinTutorial/config"
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"errors"
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"fmt"
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"time"
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"github.com/golang-jwt/jwt/v5"
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"golang.org/x/crypto/bcrypt"
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)
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func HashPassword(password string) (string, error) {
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hash, err := bcrypt.GenerateFromPassword([]byte(password), config.AppConfig.Bcrypt.Cost)
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return string(hash), err
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}
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func GenerateJWT(username string) (string, error) {
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token := jwt.NewWithClaims(jwt.SigningMethodHS512, jwt.MapClaims{
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"username": username,
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"exp": time.Now().Add(time.Hour * 72).Unix(),
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})
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signedToken, err := token.SignedString([]byte(config.AppConfig.Jwtconfig.Secret))
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return "Bearer " + signedToken, err
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}
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func CheckPassword(password, hash string) bool {
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err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(password))
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return err == nil
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}
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func ParseToken(tokenString string) (string, error) {
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if len(tokenString) > 7 && tokenString[0:7] == "Bearer " {
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tokenString = tokenString[7:]
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}
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token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
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if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, fmt.Errorf("unexpected signing method: %v", token.Header["alg"])
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}
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return []byte(config.AppConfig.Jwtconfig.Secret), nil
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})
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if err != nil {
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return "", err
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}
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if claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
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username, ok := claims["username"].(string)
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if !ok {
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return "", errors.New("username invalid")
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}
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return username, nil
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}
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return "", errors.New("token invalid")
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}
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