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+/* SSLSocketFactory.java -- factory for SSL client sockets.
+ Copyright (C) 2004 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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 javax.net.ssl;
+
+import java.io.IOException;
+import java.net.Socket;
+import java.security.AccessController;
+import java.security.KeyStore;
+import java.security.PrivilegedAction;
+import java.security.Security;
+import javax.net.SocketFactory;
+
+/**
+ * A socket factory for creating <i>Secure Socket Layer</i> (<b>SSL</b>)
+ * sockets.
+ */
+public abstract class SSLSocketFactory extends SocketFactory
+{
+
+ // Constants.
+ // -------------------------------------------------------------------------
+
+ private static SSLContext context;
+
+ // Constructor.
+ // -------------------------------------------------------------------------
+
+ public SSLSocketFactory()
+ {
+ super();
+ }
+
+ // Class methods.
+ // -------------------------------------------------------------------------
+
+ /**
+ * Returns a default implementation of a SSL socket factory.
+ *
+ * <p>To control the class that gets returned by this method, set the
+ * security property "ssl.SocketFactory.provider" to the class
+ * name of a concrete implementation of this class. If not set, a
+ * system-dependent implementation will be used.</p>
+ *
+ * <p>The implementation returned is created by the first implementation
+ * of the {@link SSLContext} class found, which is initialized with
+ * default parameters. To control the key and trust manager factory
+ * algorithms used as defaults, set the security properties
+ * "ssl.keyManagerFactory.algorithm" and "ssl.trustManagerFactory.algorithm"
+ * to the appropriate names.</p>
+ *
+ * <p>Using this method is not recommended. Instead, use the methods of
+ * {@link SSLContext}, which provide much better control over the
+ * creation of socket factories.</p>
+ *
+ * @return The default socket factory.
+ * @throws RuntimeException If no default can be created.
+ */
+ public static synchronized SocketFactory getDefault()
+ {
+ try
+ {
+ String s = Security.getProperty("ssl.SocketFactory.provider");
+ ClassLoader cl = ClassLoader.getSystemClassLoader();
+ if (s != null && cl != null)
+ {
+ return (SocketFactory) cl.loadClass(s).newInstance();
+ }
+ }
+ catch (Exception e)
+ {
+ }
+ if (context == null)
+ {
+ KeyManager[] km = null;
+ TrustManager[] tm = null;
+
+ // 1. Determine which algorithms to use for the key and trust
+ // manager factories.
+ String kmAlg = KeyManagerFactory.getDefaultAlgorithm();
+ String tmAlg = TrustManagerFactory.getDefaultAlgorithm();
+
+ // 2. Try to initialize the factories with default parameters.
+ try
+ {
+ KeyManagerFactory kmf = KeyManagerFactory.getInstance(kmAlg);
+ kmf.init(null, null);
+ km = kmf.getKeyManagers();
+ }
+ catch (Exception ex)
+ {
+ }
+ try
+ {
+ TrustManagerFactory tmf = TrustManagerFactory.getInstance(tmAlg);
+ tmf.init((KeyStore) null);
+ tm = tmf.getTrustManagers();
+ }
+ catch (Exception ex)
+ {
+ }
+
+ // 3. Create and initialize a context.
+ try
+ {
+ context = SSLContext.getInstance("SSLv3");
+ context.init(km, tm, null);
+ }
+ catch (Exception ex)
+ {
+ throw new RuntimeException("error instantiating default socket factory: "
+ + ex.toString());
+ }
+ }
+ try
+ {
+ return context.getSocketFactory();
+ }
+ catch (Exception e)
+ {
+ }
+ throw new RuntimeException("no SSLSocketFactory implementation available");
+ }
+
+ // Abstract methods.
+ // -------------------------------------------------------------------------
+
+ /**
+ * Creates a SSL socket wrapped around an existing socket.
+ *
+ * @param socket The socket to wrap.
+ * @param host The host the socket is connected to.
+ * @param port The port the socket is connected to.
+ * @param autoClose Whether or not the wrapped socket should be closed
+ * automatically.
+ * @return The new SSL socket.
+ * @throws IOException If the socket could not be created.
+ */
+ public abstract Socket createSocket(Socket socket, String host,
+ int port, boolean autoClose)
+ throws IOException;
+
+ /**
+ * Returns the list of cipher suites that will be enabled in sockets
+ * created by this factory.
+ *
+ * @return The default cipher suites.
+ */
+ public abstract String[] getDefaultCipherSuites();
+
+ /**
+ * Returns the list of all cipher suites supported by this factory.
+ *
+ * @return The list of supported cipher suites.
+ */
+ public abstract String[] getSupportedCipherSuites();
+}