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token.go
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token.go
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package token
import (
"fmt"
"github.com/dgrijalva/jwt-go"
)
// GenerateToken return a token generated
func GenerateToken(payload string, secret []byte, exp int64) (string, error) {
claims := jwt.MapClaims{}
claims["id"] = payload
claims["exp"] = exp
handler := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
token, err := handler.SignedString(secret)
if err != nil {
return "", fmt.Errorf("can not create token: %v", err)
}
return token, nil
}
func verify(token string, secret []byte) (*jwt.Token, error) {
return jwt.Parse(token, func(tk *jwt.Token) (interface{}, error) {
return []byte(secret), nil
})
}
// ValidateToken validate a token
func ValidateToken(token string, secret []byte) (bool, error) {
tokenParsed, err := verify(token, secret)
if err != nil {
return false, fmt.Errorf("could not parse token: %v", err)
}
return tokenParsed.Valid, nil
}
// GetTokenData parse a token and get data
func GetTokenData(token string, secret []byte) (interface{}, error) {
tokenParsed, err := verify(token, secret)
if err != nil {
return nil, err
}
payload, ok := tokenParsed.Claims.(jwt.MapClaims)["id"].(string)
if !ok && !tokenParsed.Valid {
return nil, fmt.Errorf("invalid token")
}
return payload, nil
}