HSIsAuthed.java

package tor.examples;

import com.sun.org.apache.xml.internal.security.exceptions.Base64DecodingException;
import com.sun.org.apache.xml.internal.security.utils.Base64;
import tor.util.TorDocumentParser;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;

/**
 * Created by gho on 10/11/14.
 *
 * Takes a directory containing hidden service descriptors as cmd line argument (1 or more)
 * prints "Authenticated" for every descriptor which is encrypted.
 *
 * Use with 'wc -l' to print out a number
 */
public class HSIsAuthed {
    public static boolean isAscii(byte b[]) {
        for (byte x : b)
            if(x<0)
                return false;
        return true;
    }
    public static void main(String[] args) throws IOException, Base64DecodingException {
        for (String dir : args) {
            for (File f : new File(dir).listFiles()) {
                String fd = new String(Files.readAllBytes(Paths.get(f.getAbsolutePath())));
                String ipts = new TorDocumentParser(fd).getItem("introduction-points");
                if (ipts != null && !isAscii(Base64.decode(ipts))) {
                    System.out.println("Authenticated");
                }


            }
        }
    }
}