src/be/nikiroo/utils/Proxy.java

   1 package be.nikiroo.utils;
   2
   3 import java.net.Authenticator;
   4 import java.net.PasswordAuthentication;
   5
   6 /**
   7  * Simple proxy helper to select a default internet proxy.
   8  *
   9  * @author niki
  10  */
  11 public class Proxy {
  12         /**
  13          * Use the system proxy.
  14          */
  15         static public void useSystemProxy() {
  16                 useSystemProxy(null, null);
  17         }
  18
  19         /**
  20          * Use the system proxy with the given login/password, for authenticated
  21          * proxies.
  22          *
  23          * @param user
  24          *            the user name or login
  25          * @param password
  26          *            the password
  27          */
  28         static public void useSystemProxy(String user, String password) {
  29                 System.setProperty("java.net.useSystemProxies", "true");
  30                 auth(user, password);
  31         }
  32
  33         /**
  34          * Use the give proxy.
  35          *
  36          * @param host
  37          *            the proxy host name or IP address
  38          * @param port
  39          *            the port to use
  40          */
  41         static public void useProxy(String host, int port) {
  42                 useProxy(host, port, null, null);
  43         }
  44
  45         /**
  46          * Use the given proxy with the given login/password, for authenticated
  47          * proxies.
  48          *
  49          * @param user
  50          *            the user name or login
  51          * @param password
  52          *            the password
  53          * @param host
  54          *            the proxy host name or IP address
  55          * @param port
  56          *            the port to use
  57          * @param user
  58          *            the user name or login
  59          * @param password
  60          *            the password
  61          */
  62         static public void useProxy(String host, int port, String user,
  63                         String password) {
  64                 System.setProperty("http.proxyHost", "proxy.stluc.ucl.ac.be");
  65                 System.setProperty("http.proxyPort", "8080");
  66                 auth(user, password);
  67         }
  68
  69         /**
  70          * Select the default authenticator for proxy requests.
  71          *
  72          * @param user
  73          *            the user name or login
  74          * @param password
  75          *            the password
  76          */
  77         static private void auth(final String user, final String password) {
  78                 if (user != null && password != null) {
  79                         Authenticator proxy = new Authenticator() {
  80                                 @Override
  81                                 protected PasswordAuthentication getPasswordAuthentication() {
  82                                         if (getRequestorType() == RequestorType.PROXY) {
  83                                                 return new PasswordAuthentication(user,
  84                                                                 password.toCharArray());
  85                                         }
  86                                         return null;
  87                                 }
  88                         };
  89                         Authenticator.setDefault(proxy);
  90                 }
  91         }
  92 }