src/org/cacert/gigi/ping/HTTPFetch.java

   1 package org.cacert.gigi.ping;
   2
   3 import java.io.BufferedReader;
   4 import java.io.IOException;
   5 import java.io.InputStreamReader;
   6 import java.net.HttpURLConnection;
   7 import java.net.URL;
   8
   9 import org.cacert.gigi.Domain;
  10 import org.cacert.gigi.User;
  11
  12 public class HTTPFetch extends DomainPinger {
  13
  14     @Override
  15     public String ping(Domain domain, String expToken, User user) {
  16         try {
  17             String[] tokenParts = expToken.split(":", 2);
  18             URL u = new URL("http://" + domain.getSuffix() + "/cacert-" + tokenParts[0] + ".txt");
  19             HttpURLConnection huc = (HttpURLConnection) u.openConnection();
  20             if (huc.getResponseCode() != 200) {
  21                 return "Invalid status code.";
  22             }
  23             BufferedReader br = new BufferedReader(new InputStreamReader(huc.getInputStream(), "UTF-8"));
  24             String line = br.readLine();
  25             if (line == null) {
  26                 return "No response from your server.";
  27             }
  28             if (line.trim().equals(tokenParts[1])) {
  29                 return PING_SUCCEDED;
  30             }
  31             return "Challange tokens differed.";
  32         } catch (IOException e) {
  33             e.printStackTrace();
  34             return "Connection closed.";
  35         }
  36     }
  37 }