new: proxy

[fanfix.git] / src / be / nikiroo / utils / Proxy.java

diff --git a/src/be/nikiroo/utils/Proxy.java b/src/be/nikiroo/utils/Proxy.java
new file mode 100755 (executable)
index 0000000..fa59c73
--- /dev/null
+++ b/src/be/nikiroo/utils/Proxy.java
@@ -0,0 +1,92 @@
+package be.nikiroo.utils;
+
+import java.net.Authenticator;
+import java.net.PasswordAuthentication;
+
+/**
+ * Simple proxy helper to select a default internet proxy.
+ * 
+ * @author niki
+ */
+public class Proxy {
+       /**
+        * Use the system proxy.
+        */
+       static public void useSystemProxy() {
+               useSystemProxy(null, null);
+       }
+
+       /**
+        * Use the system proxy with the given login/password, for authenticated
+        * proxies.
+        * 
+        * @param user
+        *            the user name or login
+        * @param password
+        *            the password
+        */
+       static public void useSystemProxy(String user, String password) {
+               System.setProperty("java.net.useSystemProxies", "true");
+               auth(user, password);
+       }
+
+       /**
+        * Use the give proxy.
+        * 
+        * @param host
+        *            the proxy host name or IP address
+        * @param port
+        *            the port to use
+        */
+       static public void useProxy(String host, int port) {
+               useProxy(host, port, null, null);
+       }
+
+       /**
+        * Use the given proxy with the given login/password, for authenticated
+        * proxies.
+        * 
+        * @param user
+        *            the user name or login
+        * @param password
+        *            the password
+        * @param host
+        *            the proxy host name or IP address
+        * @param port
+        *            the port to use
+        * @param user
+        *            the user name or login
+        * @param password
+        *            the password
+        */
+       static public void useProxy(String host, int port, String user,
+                       String password) {
+               System.setProperty("http.proxyHost", "proxy.stluc.ucl.ac.be");
+               System.setProperty("http.proxyPort", "8080");
+               auth(user, password);
+       }
+
+       /**
+        * Select the default authenticator for proxy requests.
+        * 
+        * @param user
+        *            the user name or login
+        * @param password
+        *            the password
+        */
+       static private void auth(final String user, final String password) {
+               if (user != null && password != null) {
+                       Authenticator proxy = new Authenticator() {
+                               @Override
+                               protected PasswordAuthentication getPasswordAuthentication() {
+                                       if (getRequestorType() == RequestorType.PROXY) {
+                                               return new PasswordAuthentication(user,
+                                                               password.toCharArray());
+                                       }
+                                       return null;
+                               }
+                       };
+                       Authenticator.setDefault(proxy);
+               }
+       }
+}