1 package org.cacert.gigi.ping;
3 import java.io.BufferedReader;
4 import java.io.IOException;
5 import java.io.InputStreamReader;
6 import java.util.Arrays;
7 import java.util.LinkedList;
9 import org.cacert.gigi.Domain;
10 import org.cacert.gigi.User;
12 public class DNSPinger extends DomainPinger {
15 public String ping(Domain domain, String expToken, User u) {
17 String[] tokenParts = expToken.split(":", 2);
19 Process p = Runtime.getRuntime().exec(new String[] {
20 "dig", "+short", "NS", domain.getSuffix()
22 BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
24 LinkedList<String> nameservers = new LinkedList<String>();
25 while ((line = br.readLine()) != null) {
26 nameservers.add(line);
29 StringBuffer result = new StringBuffer();
30 result.append("failed: ");
31 boolean failed = nameservers.isEmpty();
33 for (String NS : nameservers) {
34 String[] call = new String[] {
35 "dig", "@" + NS, "+short", "TXT", "cacert-" + tokenParts[0] + "." + domain.getSuffix()
37 System.out.println(Arrays.toString(call));
38 p = Runtime.getRuntime().exec(call);
39 br = new BufferedReader(new InputStreamReader(p.getInputStream()));
41 boolean found = false;
42 while ((line = br.readLine()) != null) {
47 token = line.substring(1, line.length() - 1);
48 if (token.equals(tokenParts[1])) {
55 result.append(" DIFFER;");
57 result.append(" EMPTY;");
65 return result.toString();
66 } catch (IOException e) {
68 return "Connection closed";