[Development] java: Implement TLS security type. (Martin Koegler)

git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4199 3789f03b-4d11-0410-bbf8-ca57d06f2519

5 files changed, 167 insertions, 2 deletions

diff --git a/java/src/com/tigervnc/vncviewer/Makefile b/java/src/com/tigervnc/vncviewer/Makefile
index 0dba158e..1abc15af 100644
--- a/java/src/com/tigervnc/vncviewer/Makefile
+++ b/java/src/com/tigervnc/vncviewer/Makefile
@@ -19,7 +19,7 @@ CLASSES = VncViewer.class RfbProto.class AuthPanel.class VncCanvas.class \
 	  SocketFactory.class HTTPConnectSocketFactory.class \
 	  HTTPConnectSocket.class ReloginPanel.class \
 	  InStream.class MemInStream.class ZlibInStream.class \
-	  Dialog.class MessageBox.class
+	  TLSTunnelBase.class TLSTunnel.class Dialog.class MessageBox.class
 
 SOURCES = VncViewer.java RfbProto.java AuthPanel.java VncCanvas.java \
 	  VncCanvas2.java \
@@ -29,7 +29,7 @@ SOURCES = VncViewer.java RfbProto.java AuthPanel.java VncCanvas.java \
 	  SocketFactory.java HTTPConnectSocketFactory.java \
 	  HTTPConnectSocket.java ReloginPanel.java \
 	  InStream.java MemInStream.java ZlibInStream.java \
-	  Dialog.java MessageBox.java
+	  TLSTunnelBase.java TLSTunnel.java Dialog.java MessageBox.java
 
 all: $(CLASSES) $(ARCHIVE)
 
diff --git a/java/src/com/tigervnc/vncviewer/RfbProto.java b/java/src/com/tigervnc/vncviewer/RfbProto.java
index a0aade04..eb8ca938 100644
--- a/java/src/com/tigervnc/vncviewer/RfbProto.java
+++ b/java/src/com/tigervnc/vncviewer/RfbProto.java
@@ -431,6 +431,9 @@ class RfbProto {
 		case SecTypeNone:
 		case SecTypeVncAuth:
 		case SecTypePlain:
+		case SecTypeTLSNone:
+		case SecTypeTLSVnc:
+		case SecTypeTLSPlain:
 		    writeInt(secTypes[i]);
 		    return secTypes[i];
 		}
@@ -476,6 +479,11 @@ class RfbProto {
     readSecurityResult("VNC authentication");
   }
 
+    void authenticateTLS() throws Exception {
+	TLSTunnel tunnel = new TLSTunnel(sock);
+	tunnel.setup (this);
+    }
+
     void authenticatePlain(String User, String Password) throws Exception {
       byte[] user=User.getBytes();
       byte[] password=Password.getBytes();
@@ -1545,4 +1553,9 @@ class RfbProto {
     numBytesRead += 4;
     return r;
   }
+
+  public void setStreams(InputStream is_, OutputStream os_) {
+    is = new DataInputStream(is_);
+    os = os_;
+  }
 }
diff --git a/java/src/com/tigervnc/vncviewer/TLSTunnel.java b/java/src/com/tigervnc/vncviewer/TLSTunnel.java
new file mode 100644
index 00000000..00cfb4ab
--- /dev/null
+++ b/java/src/com/tigervnc/vncviewer/TLSTunnel.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2003-2010 Martin Koegler
+ * Copyright (C) 2006 OCCAM Financial Technology
+ *
+ * This 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 of the License, or
+ * (at your option) any later version.
+ *
+ * This software 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 this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+package com.tigervnc.vncviewer;
+
+import java.util.*;
+import java.net.*;
+import javax.net.ssl.*;
+
+public class TLSTunnel extends TLSTunnelBase
+{
+
+  public TLSTunnel (Socket sock_)
+  {
+    super (sock_);
+  }
+
+
+  protected void setParam (SSLSocket sock)
+  {
+    String[]supported;
+    ArrayList enabled = new ArrayList ();
+
+    supported = sock.getSupportedCipherSuites ();
+
+    for (int i = 0; i < supported.length; i++)
+      if (supported[i].matches (".*DH_anon.*"))
+	enabled.add (supported[i]);
+
+    sock.setEnabledCipherSuites ((String[])enabled.toArray (new String[0]));
+  }
+
+}
diff --git a/java/src/com/tigervnc/vncviewer/TLSTunnelBase.java b/java/src/com/tigervnc/vncviewer/TLSTunnelBase.java
new file mode 100644
index 00000000..922e8374
--- /dev/null
+++ b/java/src/com/tigervnc/vncviewer/TLSTunnelBase.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2003-2010 Martin Koegler
+ *
+ * This 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 of the License, or
+ * (at your option) any later version.
+ *
+ * This software 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 this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+package com.tigervnc.vncviewer;
+
+import java.util.ArrayList;
+import java.net.*;
+import javax.net.ssl.*;
+
+public abstract class TLSTunnelBase
+{
+
+  public TLSTunnelBase (Socket sock_)
+  {
+    sock = sock_;
+  }
+
+  protected void initContext (SSLContext sc) throws java.security.
+    GeneralSecurityException
+  {
+    sc.init (null, null, null);
+  }
+
+  public void setup (RfbProto cc) throws Exception
+  {
+    if (cc.readU8 () == 0)
+	throw new Exception("Setup on the server failed");
+    try
+    {
+      SSLSocketFactory sslfactory;
+      SSLSocket sslsock;
+      SSLContext sc = SSLContext.getInstance ("TLS");
+      System.out.println("Generating TLS context");
+      initContext (sc);
+      System.out.println("Doing TLS handshake");
+      sslfactory = sc.getSocketFactory ();
+      sslsock = (SSLSocket) sslfactory.createSocket (sock,
+						     sock.getInetAddress ().
+						     getHostName (),
+						     sock.getPort (), true);
+
+      setParam (sslsock);
+
+      /* Not neccessary - just ensures that we know what cipher
+       * suite we are using for the output of toString()
+       */
+      sslsock.startHandshake ();
+
+      System.out.println("TLS done");
+
+      cc.setStreams (sslsock.getInputStream (),
+		     sslsock.getOutputStream ());
+    }
+    catch (java.io.IOException e)
+    {
+      throw new Exception("TLS handshake failed " + e.toString ());
+    }
+    catch (java.security.GeneralSecurityException e)
+    {
+      throw new Exception("TLS handshake failed " + e.toString ());
+    }
+  }
+
+
+  protected abstract void setParam (SSLSocket sock);
+
+  Socket sock;
+
+}
diff --git a/java/src/com/tigervnc/vncviewer/VncViewer.java b/java/src/com/tigervnc/vncviewer/VncViewer.java
index 41f484f9..26c82384 100644
--- a/java/src/com/tigervnc/vncviewer/VncViewer.java
+++ b/java/src/com/tigervnc/vncviewer/VncViewer.java
@@ -392,6 +392,21 @@ public class VncViewer extends java.applet.Applet
 		rfb.authenticatePlain(user,pw);
 	    }
 	    break;
+	case RfbProto.SecTypeTLSNone:
+	    showConnectionStatus("TLSNone");
+	    rfb.authenticateTLS();
+	    rfb.authenticateNone();
+	    break;
+	case RfbProto.SecTypeTLSVnc:
+	    showConnectionStatus("TLSVnc");
+	    rfb.authenticateTLS();
+	    doAuthentification(RfbProto.SecTypeVncAuth);
+	    break;
+	case RfbProto.SecTypeTLSPlain:
+	    showConnectionStatus("TLSPlain");
+	    rfb.authenticateTLS();
+	    doAuthentification(RfbProto.SecTypePlain);
+	    break;
 	default:
 	    throw new Exception("Unknown authentication scheme " + secType);
 	}