maugern/jersey-skeleton

package fr.maugern.skeleton.auth;

import javax.xml.bind.DatatypeConverter;

public class BasicAuth {
    
    /*
     * Utility classes should not have public constructors
     */
    private BasicAuth() {
        throw new IllegalAccessError("Utility class");
    }
    
    public static String[] decode(String auth) {

        byte[] decodedBytes = DatatypeConverter.parseBase64Binary(extractBase64(auth));

        if (decodedBytes == null || decodedBytes.length == 0) {
            return new String[0]; // SonarQube recommend empty array instead of null
        }

        return new String(decodedBytes).split(":", 2);
    }

    private static String extractBase64(String auth) {
        return auth.replaceFirst("[B|b]asic ", "");
    }
}