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jwt.go
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jwt.go
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package config
import (
"crypto/rand"
"encoding/hex"
"fmt"
"strconv"
"time"
"github.com/golang-jwt/jwt/v5"
)
var letterRunes = []rune("0987654321abcçdefgğhıijklmnoöpqrsştuüvwxyzABCÇDEFGĞHIİJKLMNOÖPQRSTUÜVWXYZ-_!?+&%=*")
// GenerateToken token generate
func GenerateToken(userId int) (string, error) {
claims := jwt.RegisteredClaims{
IssuedAt: jwt.NewNumericDate(time.Now()),
ExpiresAt: jwt.NewNumericDate(time.Now().AddDate(0, 0, 1)),
Issuer: strconv.Itoa(userId),
}
token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
t, err := token.SignedString([]byte(App().SecretKey))
if err != nil {
return "", err
}
return t, nil
}
// ValidateToken token validate
func ValidateToken(token string) (*jwt.Token, error) {
return jwt.Parse(token, func(t *jwt.Token) (interface{}, error) {
if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
return nil, fmt.Errorf("unexpected signing method %v", t.Header["alg"])
}
return []byte(App().SecretKey), nil
})
}
func GetUserIDByToken(token string) (string, error) {
valid, err := ValidateToken(token)
if err != nil {
return "", err
}
claims := valid.Claims.(jwt.MapClaims)
id := fmt.Sprintf("%v", claims["iss"])
return id, nil
}
func RandomString(length int) string {
s, r := make([]rune, length), []rune(letterRunes)
for i := range s {
p, _ := rand.Prime(rand.Reader, len(r))
x, y := p.Uint64(), uint64(len(r))
s[i] = r[x%y]
}
return string(s)
}
func RandomHex(length int) string {
bytes := make([]byte, length)
if _, err := rand.Read(bytes); err != nil {
return RandomString(length)
}
return hex.EncodeToString(bytes)
}