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refresh_token.go
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/
refresh_token.go
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package credentials
import (
"net/url"
"strings"
"time"
"github.com/google/uuid"
"github.com/artem-malko/auth-and-go/infrastructure/crypto"
"github.com/artem-malko/auth-and-go/infrastructure/random"
"github.com/artem-malko/auth-and-go/models"
"github.com/pkg/errors"
)
type RefreshTokenInfo struct {
RefreshToken uuid.UUID
}
func CreateRefreshToken(session models.Session, tokenSecretKey []byte) (string, error) {
refreshTokenPayload := random.RandStringRunes(5)
refreshToken, err := crypto.Encrypt(
strings.Join([]string{
refreshTokenPayload,
session.RefreshTokenExpiresDate.UTC().Format(time.RFC3339),
session.RefreshToken.String(),
}, tokenValuesSeparator),
tokenSecretKey,
)
if err != nil {
return "", errors.Wrap(err, "refresh token generation error")
}
return refreshToken, nil
}
func ParseRawRefreshToken(rawRefreshToken string, decodeKey []byte) (*RefreshTokenInfo, error) {
decodedRefreshTokenString, err := url.PathUnescape(rawRefreshToken)
if err != nil {
return nil, errors.Wrap(err, "ParseRawRefreshToken string error, decode error")
}
decryptedRefreshTokenString, err := crypto.Decrypt(decodedRefreshTokenString, decodeKey)
if err != nil {
return nil, errors.Wrap(err, "ParseRawRefreshToken string error, decrypt error")
}
decryptedRefreshTokenStringParts := strings.Split(decryptedRefreshTokenString, tokenValuesSeparator)
if len(decryptedRefreshTokenStringParts) != 3 {
return nil, errors.Wrap(err, "ParseRawRefreshToken string error, incorrect parts count")
}
refreshTokenExpiresDate, err := time.Parse(time.RFC3339, decryptedRefreshTokenStringParts[1])
if err != nil {
return nil, errors.Wrap(err, "ParseRawRefreshToken string error, parse expires date error")
}
duration := time.Since(refreshTokenExpiresDate)
if duration.Seconds() > 0 {
return nil, errors.Wrap(err, "ParseRawRefreshToken string error, refresh token expired")
}
refreshToken, err := uuid.Parse(decryptedRefreshTokenStringParts[2])
if err != nil {
return nil, errors.Wrap(err, "ParseRawRefreshToken string error, refreshToken parsing error")
}
return &RefreshTokenInfo{
RefreshToken: refreshToken,
}, nil
}