aboutsummaryrefslogtreecommitdiffstats
path: root/plugin/icedteanp/java/sun/applet/PluginProxySelector.java
diff options
context:
space:
mode:
Diffstat (limited to 'plugin/icedteanp/java/sun/applet/PluginProxySelector.java')
-rw-r--r--plugin/icedteanp/java/sun/applet/PluginProxySelector.java195
1 files changed, 195 insertions, 0 deletions
diff --git a/plugin/icedteanp/java/sun/applet/PluginProxySelector.java b/plugin/icedteanp/java/sun/applet/PluginProxySelector.java
new file mode 100644
index 0000000..dff8ded
--- /dev/null
+++ b/plugin/icedteanp/java/sun/applet/PluginProxySelector.java
@@ -0,0 +1,195 @@
+/* PluginProxySelector -- proxy selector for all connections from applets and the plugin
+ Copyright (C) 2009 Red Hat
+
+This file is part of IcedTea.
+
+IcedTea is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+IcedTea is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with IcedTea; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+package sun.applet;
+
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.Proxy;
+import java.net.ProxySelector;
+import java.net.SocketAddress;
+import java.net.URI;
+import java.util.Date;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+/**
+ * Proxy selector implementation for plugin network functions.
+ *
+ * This class fetches proxy information from the web browser and
+ * uses that information in the context of all network connection
+ * (plugin specific and applet connections) as applicable
+ *
+ */
+
+public class PluginProxySelector extends ProxySelector {
+
+ private TimedHashMap<String, Proxy> proxyCache = new TimedHashMap<String, Proxy>();
+
+
+ @Override
+ public void connectFailed(URI uri, SocketAddress sa, IOException ioe) {
+ // If the connection fails, there is little we can do here. Just print the exception
+ ioe.printStackTrace();
+ }
+
+ /**
+ * Selects the appropriate proxy (or DIRECT connection method) for the given URI
+ *
+ * @param uri The URI being accessed
+ * @return A list of Proxy objects that are usable for this URI
+ */
+ @Override
+ public List<Proxy> select(URI uri) {
+
+ List<Proxy> proxyList = new ArrayList<Proxy>();
+
+ // check cache first
+ Proxy cachedProxy = checkCache(uri);
+ if (cachedProxy != null) {
+ proxyList.add(cachedProxy);
+ return proxyList;
+ }
+
+ // Nothing usable in cache. Fetch info from browser
+ Proxy proxy = Proxy.NO_PROXY;
+ Object o = PluginAppletViewer.requestPluginProxyInfo(uri);
+
+ // If the browser returned anything, try to parse it. If anything in the try block fails, the fallback is direct connection
+ try {
+ if (o != null) {
+ PluginDebug.debug("Proxy URI = " + o);
+ URI proxyURI = (URI) o;
+
+ // If origin uri is http/ftp, we're good. If origin uri is not that, the proxy _must_ be socks, else we fallback to direct
+ if (uri.getScheme().startsWith("http") || uri.getScheme().equals("ftp") || proxyURI.getScheme().startsWith("socks")) {
+
+ Proxy.Type type = proxyURI.getScheme().equals("http") ? Proxy.Type.HTTP : Proxy.Type.SOCKS;
+ InetSocketAddress socketAddr = new InetSocketAddress(proxyURI.getHost(), proxyURI.getPort());
+
+ proxy = new Proxy(type, socketAddr);
+
+ String uriKey = uri.getScheme() + "://" + uri.getHost();
+ proxyCache.put(uriKey, proxy);
+ } else {
+ PluginDebug.debug("Proxy " + proxyURI + " cannot be used for " + uri + ". Falling back to DIRECT");
+ }
+ }
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+
+ proxyList.add(proxy);
+
+ PluginDebug.debug("Proxy for " + uri.toString() + " is " + proxy);
+
+ return proxyList;
+ }
+
+ /**
+ * Checks to see if proxy information is already cached.
+ *
+ * @param uri The URI to check
+ * @return The cached Proxy. null if there is no suitable cached proxy.
+ */
+ private Proxy checkCache(URI uri) {
+
+ String uriKey = uri.getScheme() + "://" + uri.getHost();
+ if (proxyCache.get(uriKey) != null) {
+ return proxyCache.get(uriKey);
+ }
+
+ return null;
+ }
+
+ /**
+ * Simple utility class that extends HashMap by adding an expiry to the entries.
+ *
+ * This map stores entries, and returns them only if the entries were last accessed within time t=10 seconds
+ *
+ * @param <K> The key type
+ * @param <V> The Object type
+ */
+
+ private class TimedHashMap<K,V> extends HashMap<K,V> {
+
+ HashMap<K, Long> timeStamps = new HashMap<K, Long>();
+ Long expiry = 10000L;
+
+ /**
+ * Store the item in the map and associate a timestamp with it
+ *
+ * @param key The key
+ * @param value The value to store
+ */
+ public V put(K key, V value) {
+ timeStamps.put(key, new Date().getTime());
+ return super.put(key, value);
+ }
+
+ /**
+ * Return cached item if it has not already expired.
+ *
+ * Before returning, this method also resets the "last accessed"
+ * time for this entry, so it is good for another 10 seconds
+ *
+ * @param key The key
+ */
+ public V get(Object key) {
+
+ Long now = new Date().getTime();
+
+ if (super.containsKey(key)) {
+ Long age = now - timeStamps.get(key);
+
+ // Item exists. If it has not expired, renew its access time and return it
+ if (age <= expiry) {
+ PluginDebug.debug("Returning proxy " + super.get(key) + " from cache for " + key);
+ timeStamps.put((K) key, (new Date()).getTime());
+ return super.get(key);
+ } else {
+ PluginDebug.debug("Proxy cache for " + key + " has expired (age=" + age/1000.0 + " seconds)");
+ }
+ }
+
+ return null;
+ }
+ }
+
+}