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jwt.go
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jwt.go
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package utils
import (
"time"
jwt "github.com/dgrijalva/jwt-go"
)
// Generate the `access token` and `refresh token` for the secret key.
func GenerateJWTTokenPair(hmacSecret []byte, sessionUuid string, d time.Duration) (string, string, error) {
//
// Generate token.
//
claims := &jwt.StandardClaims{
ExpiresAt: time.Now().Add(d).Unix(),
Issuer: sessionUuid,
}
token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
tokenString, err := token.SignedString(hmacSecret)
if err != nil {
return "", "", err
}
//
// Generate refresh token.
//
claims = &jwt.StandardClaims{
ExpiresAt: time.Now().Add(d + time.Hour*24*7).Unix(), // Plus 7 days.
Issuer: sessionUuid,
}
token = jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
refreshTokenString, err := token.SignedString(hmacSecret)
// Return our tokens
return tokenString, refreshTokenString, err
}
// Validates either the `access token` or `refresh token` and returns either the
// `uuid` if success or error on failure.
func ProcessBearerToken(hmacSecret []byte, tokenString string) (string, error) {
token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
return hmacSecret, nil
})
if err == nil && token.Valid {
if claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
issuer := claims["iss"].(string)
// m["exp"] := string(claims["exp"].(float64))
return issuer, nil
} else {
return "", err
}
} else {
return "", err
}
return "", nil
}