path: root/classes/ssl/tightvnc-1.3dev7_javasrc-vncviewer-ssl.patch

diff -x VncCanvas.java -Naur vnc_javasrc.orig/Makefile vnc_javasrc/Makefile
--- vnc_javasrc.orig/Makefile	2004-03-04 08:34:25.000000000 -0500
+++ vnc_javasrc/Makefile	2006-03-26 17:29:25.000000000 -0500
@@ -15,25 +15,29 @@
 	  DesCipher.class CapabilityInfo.class CapsContainer.class \
 	  RecordingFrame.class SessionRecorder.class AuthUnixLoginPanel.class \
 	  SocketFactory.class HTTPConnectSocketFactory.class \
-	  HTTPConnectSocket.class ReloginPanel.class
+	  HTTPConnectSocket.class ReloginPanel.class \
+	  SSLSocketToMe.class
+
+SSL_CLASSES = SSLSocketToMe*.class TrustDialog.class
 
 SOURCES = VncViewer.java RfbProto.java AuthPanel.java VncCanvas.java \
 	  OptionsFrame.java ClipboardFrame.java ButtonPanel.java \
 	  DesCipher.java CapabilityInfo.java CapsContainer.java \
 	  RecordingFrame.java SessionRecorder.java AuthUnixLoginPanel.java \
 	  SocketFactory.java HTTPConnectSocketFactory.java \
-	  HTTPConnectSocket.java ReloginPanel.java
+	  HTTPConnectSocket.java ReloginPanel.java \
+	  SSLSocketToMe.java
 
 all: $(CLASSES) $(ARCHIVE)
 
 $(CLASSES): $(SOURCES)
-	$(JC) -target 1.1 -O $(SOURCES)
+	$(JC) -target 1.4 -O $(SOURCES)
 
 $(ARCHIVE): $(CLASSES) $(MANIFEST)
-	$(JAR) cfm $(ARCHIVE) $(MANIFEST) $(CLASSES)
+	$(JAR) cfm $(ARCHIVE) $(MANIFEST) $(CLASSES) $(SSL_CLASSES)
 
 install: $(CLASSES) $(ARCHIVE)
-	$(CP) $(CLASSES) $(ARCHIVE) $(PAGES) $(INSTALL_DIR)
+	$(CP) $(CLASSES) $(SSL_CLASSES) $(ARCHIVE) $(PAGES) $(INSTALL_DIR)
 
 export:: $(CLASSES) $(ARCHIVE) $(PAGES)
 	@$(ExportJavaClasses)
diff -x VncCanvas.java -Naur vnc_javasrc.orig/RfbProto.java vnc_javasrc/RfbProto.java
--- vnc_javasrc.orig/RfbProto.java	2004-03-04 08:34:25.000000000 -0500
+++ vnc_javasrc/RfbProto.java	2006-04-03 11:22:30.000000000 -0400
@@ -199,7 +199,21 @@
     host = h;
     port = p;
 
-    if (viewer.socketFactory == null) {
+    if (! viewer.disableSSL) {
+      System.out.println("new SSLSocketToMe");
+      SSLSocketToMe ssl;
+      try {
+        ssl = new SSLSocketToMe(host, port, v);
+      } catch (Exception e) {
+	throw new IOException(e.getMessage());
+      }
+
+      try {
+      	sock = ssl.connectSock();
+      } catch (Exception es) {
+	throw new IOException(es.getMessage());
+      }
+    } else if (viewer.socketFactory == null) {
       sock = new Socket(host, port);
     } else {
       try {
diff -x VncCanvas.java -Naur vnc_javasrc.orig/SSLSocketToMe.java vnc_javasrc/SSLSocketToMe.java
--- vnc_javasrc.orig/SSLSocketToMe.java	1969-12-31 19:00:00.000000000 -0500
+++ vnc_javasrc/SSLSocketToMe.java	2006-04-04 13:17:39.000000000 -0400
@@ -0,0 +1,1040 @@
+/*
+ * SSLSocketToMe.java: add SSL encryption to Java VNC Viewer.
+ *
+ * Copyright (c) 2006 Karl J. Runge <runge@karlrunge.com>
+ * All rights reserved.
+ *
+ *  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; version 2 of the License.
+ *
+ *  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.
+ *
+ */
+
+import java.net.*;
+import java.io.*;
+import javax.net.ssl.*;
+import java.security.cert.*;
+import java.util.*;
+
+import java.awt.*;
+import java.awt.event.*;
+
+public class SSLSocketToMe {
+
+	/* basic member data: */
+	String host;
+	int port;
+	VncViewer viewer;
+	boolean debug = true;
+
+	/* sockets */
+	SSLSocket socket = null;
+	SSLSocketFactory factory;
+
+	/* fallback for Proxy connection */
+	boolean proxy_in_use = false;
+	boolean proxy_failure = false;
+	public DataInputStream is = null;
+	public OutputStream os = null;
+
+	Socket proxySock;
+	DataInputStream proxy_is;
+	OutputStream proxy_os;
+
+	/* trust contexts */
+	SSLContext trustloc_ctx;
+	SSLContext trustall_ctx;
+	SSLContext trusturl_ctx;
+	SSLContext trustone_ctx;
+
+	TrustManager[] trustAllCerts;
+	TrustManager[] trustUrlCert;
+	TrustManager[] trustOneCert;
+
+	boolean use_url_cert_for_auth = true;
+	boolean user_wants_to_see_cert = true;
+
+	/* cert(s) we retrieve from VNC server */
+	java.security.cert.Certificate[] trustallCerts = null;
+	java.security.cert.Certificate[] trusturlCerts = null;
+
+	SSLSocketToMe(String h, int p, VncViewer v) throws Exception {
+		host = h;
+		port = p;
+		viewer = v;
+
+		/* we will first try default factory for certification: */
+
+		factory = (SSLSocketFactory) SSLSocketFactory.getDefault();
+
+		dbg("SSL startup: " + host + " " + port);
+
+		/* create trust managers used if initial handshake fails: */
+
+
+		trustAllCerts = new TrustManager[] {
+		    /*
+		     * this one accepts everything.
+		     */
+		    new X509TrustManager() {
+			public java.security.cert.X509Certificate[]
+			    getAcceptedIssuers() {
+				return null;
+			}
+			public void checkClientTrusted(
+			    java.security.cert.X509Certificate[] certs,
+			    String authType) {
+				/* empty */
+			}
+			public void checkServerTrusted(
+			    java.security.cert.X509Certificate[] certs,
+			    String authType) {
+				/* empty */
+				dbg("ALL: an untrusted connect to grab cert.");
+			}
+		    }
+		};
+
+		trustUrlCert = new TrustManager[] {
+		    /*
+		     * this one accepts only the retrieved server cert
+		     * by SSLSocket by this applet.
+		     */
+		    new X509TrustManager() {
+			public java.security.cert.X509Certificate[]
+			    getAcceptedIssuers() {
+				return null;
+			}
+			public void checkClientTrusted(
+			    java.security.cert.X509Certificate[] certs,
+			    String authType) throws CertificateException {
+				throw new CertificateException("No Clients");
+			}
+			public void checkServerTrusted(
+			    java.security.cert.X509Certificate[] certs,
+			    String authType) throws CertificateException {
+				if (trusturlCerts == null) {
+					throw new CertificateException(
+					    "No Trust url Certs array.");
+				}
+				if (trusturlCerts.length < 1) {
+					throw new CertificateException(
+					    "No Trust url Certs.");
+				}
+				if (trusturlCerts.length > 1) {
+					throw new CertificateException(
+					    "Too many Trust url Certs.");
+				}
+				if (certs == null) {
+					throw new CertificateException(
+					    "No this-certs array.");
+				}
+				if (certs.length < 1) {
+					throw new CertificateException(
+					    "No this-certs Certs.");
+				}
+				if (certs.length > 1) {
+					throw new CertificateException(
+					    "Too many this-certs.");
+				}
+				if (! trusturlCerts[0].equals(certs[0])) {
+					throw new CertificateException(
+					    "Server Cert Changed != URL.");
+				}
+				dbg("URL: trusturlCerts[0] matches certs[0]");
+			}
+		    }
+		};
+		trustOneCert = new TrustManager[] {
+		    /*
+		     * this one accepts only the retrieved server cert
+		     * by SSLSocket by this applet.
+		     */
+		    new X509TrustManager() {
+			public java.security.cert.X509Certificate[]
+			    getAcceptedIssuers() {
+				return null;
+			}
+			public void checkClientTrusted(
+			    java.security.cert.X509Certificate[] certs,
+			    String authType) throws CertificateException {
+				throw new CertificateException("No Clients");
+			}
+			public void checkServerTrusted(
+			    java.security.cert.X509Certificate[] certs,
+			    String authType) throws CertificateException {
+				if (trustallCerts == null) {
+					throw new CertificateException(
+					    "No Trust All Server Certs array.");
+				}
+				if (trustallCerts.length < 1) {
+					throw new CertificateException(
+					    "No Trust All Server Certs.");
+				}
+				if (trustallCerts.length > 1) {
+					throw new CertificateException(
+					    "Too many Trust All Server Certs.");
+				}
+				if (certs == null) {
+					throw new CertificateException(
+					    "No this-certs array.");
+				}
+				if (certs.length < 1) {
+					throw new CertificateException(
+					    "No this-certs Certs.");
+				}
+				if (certs.length > 1) {
+					throw new CertificateException(
+					    "Too many this-certs.");
+				}
+				if (! trustallCerts[0].equals(certs[0])) {
+					throw new CertificateException(
+					    "Server Cert Changed != TRUSTALL.");
+				}
+				dbg("ONE: trustallCerts[0] matches certs[0]");
+			}
+		    }
+		};
+
+		/* 
+		 * They are used:
+		 *
+		 * 1) to retrieve the server cert in case of failure to
+		 *    display it to the user.
+		 * 2) to subsequently connect to the server if user agrees.
+		 */
+
+		/* trust loc certs: */
+		try {
+			trustloc_ctx = SSLContext.getInstance("SSL");
+			trustloc_ctx.init(null, null, new
+			    java.security.SecureRandom());
+
+		} catch (Exception e) {
+			String msg = "SSL trustloc_ctx FAILED.";
+			dbg(msg);
+			throw new Exception(msg);
+		}
+
+		/* trust all certs: */
+		try {
+			trustall_ctx = SSLContext.getInstance("SSL");
+			trustall_ctx.init(null, trustAllCerts, new
+			    java.security.SecureRandom());
+
+		} catch (Exception e) {
+			String msg = "SSL trustall_ctx FAILED.";
+			dbg(msg);
+			throw new Exception(msg);
+		}
+
+		/* trust url certs: */
+		try {
+			trusturl_ctx = SSLContext.getInstance("SSL");
+			trusturl_ctx.init(null, trustUrlCert, new
+			    java.security.SecureRandom());
+
+		} catch (Exception e) {
+			String msg = "SSL trusturl_ctx FAILED.";
+			dbg(msg);
+			throw new Exception(msg);
+		}
+
+		/* trust the one cert from server: */
+		try {
+			trustone_ctx = SSLContext.getInstance("SSL");
+			trustone_ctx.init(null, trustOneCert, new
+			    java.security.SecureRandom());
+
+		} catch (Exception e) {
+			String msg = "SSL trustone_ctx FAILED.";
+			dbg(msg);
+			throw new Exception(msg);
+		}
+	}
+
+	boolean browser_cert_match() {
+		String msg = "Browser URL accept previously accepted cert";
+
+		if (user_wants_to_see_cert) {
+			return false;
+		}
+
+		if (trustallCerts != null && trusturlCerts != null) {
+		    if (trustallCerts.length == 1 && trusturlCerts.length == 1) {
+			if (trustallCerts[0].equals(trusturlCerts[0])) {
+				System.out.println(msg);
+				return true;
+			}
+		    }
+		}
+		return false;
+	}
+
+	public Socket connectSock() throws IOException {
+
+		/*
+		 * first try a https connection to detect a proxy, and
+		 * also grab the VNC server cert.
+		 */
+		URL url = new URL("https://" + host + ":" + port +
+		    "/check.https.proxy.connection");
+		try {
+			HttpsURLConnection https = (HttpsURLConnection)
+			    url.openConnection();
+
+			https.setUseCaches(false);
+			https.setRequestMethod("GET");
+			https.setRequestProperty("Pragma", "No-Cache");
+			https.setRequestProperty("Proxy-Connection",
+			    "Keep-Alive");
+			https.setDoInput(true);
+
+			https.connect();
+
+			trusturlCerts = https.getServerCertificates();
+
+			if (https.usingProxy()) {
+				proxy_in_use = true;
+				dbg("HTTPS proxy in use. There may be connection problems.");
+			}
+			Object output = https.getContent();
+			https.disconnect();
+
+		} catch(Exception e) {
+			trusturlCerts = null;
+		}
+
+		if (use_url_cert_for_auth && trusturlCerts != null) {
+			factory = trusturl_ctx.getSocketFactory();
+		} else {
+			factory = trustloc_ctx.getSocketFactory();
+		}
+
+		socket = null;
+		try {
+			socket = (SSLSocket) factory.createSocket(host, port);
+		} catch (Exception esock) {
+			if (proxy_in_use) {
+				proxy_failure = true;
+				dbg("HTTPS proxy in use. Trying to go with it.");
+				try {
+					socket = proxy_socket(factory);
+				} catch (Exception e) {
+					dbg("err proxy_socket: " + e.getMessage());
+				}
+			}
+		}
+
+		try {
+			socket.startHandshake();
+			dbg("Server Connection Verified on 1st try.");
+
+			java.security.cert.Certificate[] currentTrustedCerts;
+			BrowserCertsDialog bcd;
+
+			SSLSession sess = socket.getSession();
+			currentTrustedCerts = sess.getPeerCertificates();
+
+			if (currentTrustedCerts == null || currentTrustedCerts.length < 1) {
+				socket.close();
+				socket = null;
+				throw new SSLHandshakeException("no current certs");
+			}
+
+			String serv = "";
+			try {
+				CertInfo ci = new CertInfo(currentTrustedCerts[0]);
+				serv = ci.get_certinfo("CN");
+			} catch (Exception e) {
+				;
+			}
+
+			bcd = new BrowserCertsDialog(serv, host + ":" + port);
+			bcd.queryUser();
+			if (bcd.showCertDialog) {
+				String msg = "user wants to see cert";
+				dbg(msg);
+				user_wants_to_see_cert = true;
+				throw new SSLHandshakeException(msg);
+			} else {
+				user_wants_to_see_cert = false;
+				dbg("bcd: user said yes, accept it");
+			}
+
+		} catch (SSLHandshakeException eh)  {
+			dbg("Could not automatically verify Server.");
+			dbg("msg: " + eh.getMessage());
+
+			socket.close();
+			socket = null;
+
+			/*
+			 * Reconnect, trusting any cert, so we can grab
+			 * the cert to show it to the user.  The connection
+			 * is not used for anything else.
+			 */
+			factory = trustall_ctx.getSocketFactory();
+			if (proxy_failure) {
+				socket = proxy_socket(factory);
+			} else {
+				socket = (SSLSocket) factory.createSocket(host, port);
+			}
+
+			try {
+				socket.startHandshake();
+				dbg("TrustAll Server Connection Verified.");
+
+				/* grab the cert: */
+				try {
+					SSLSession sess = socket.getSession();
+					trustallCerts = sess.getPeerCertificates();
+				} catch (Exception e) {
+					throw new Exception("Could not get " + 
+					    "Peer Certificate");	
+				}
+
+				if (! browser_cert_match()) {
+					/*
+					 * close socket now, we will reopen after
+					 * dialog if user agrees to use the cert.
+					 */
+					socket.close();
+					socket = null;
+
+					/* dialog with user to accept cert or not: */
+
+					TrustDialog td= new TrustDialog(host, port,
+					    trustallCerts);
+
+					if (! td.queryUser()) {
+						String msg = "User decided against it.";
+						dbg(msg);
+						throw new IOException(msg);
+					}
+				}
+
+			} catch (Exception ehand2)  {
+				dbg("** Could not TrustAll Verify Server.");
+
+				throw new IOException(ehand2.getMessage());
+			}
+
+			/*
+			 * Now connect a 3rd time, using the cert
+			 * retrieved during connection 2 (that the user
+			 * likely blindly agreed to).
+			 */
+
+			factory = trustone_ctx.getSocketFactory();
+			if (proxy_failure) {
+				socket = proxy_socket(factory);
+			} else {
+				socket = (SSLSocket) factory.createSocket(host, port);
+			}
+
+			try {
+				socket.startHandshake();
+				dbg("TrustAll Server Connection Verified #3.");
+
+			} catch (Exception ehand3)  {
+				dbg("** Could not TrustAll Verify Server #3.");
+
+				throw new IOException(ehand3.getMessage());
+			}
+		}
+
+		dbg("SSL returning socket to caller.");
+		return (Socket) socket;
+	}
+
+	private void dbg(String s) {
+		if (debug) {
+			System.out.println(s);
+		}
+	}
+
+	public SSLSocket proxy_socket(SSLSocketFactory factory) {
+		Properties props = null;
+		String proxyHost = null;
+		int proxyPort = 0;
+
+		/* see if we can guess the proxy info from Properties: */
+		try {
+			props = System.getProperties();
+		} catch (Exception e) {
+			dbg("props failed: " + e.getMessage());
+		}
+		if (props != null) {
+			dbg("\n---------------\nAll props:");
+			props.list(System.out);
+			dbg("\n---------------\n\n");
+
+			for (Enumeration e = props.propertyNames(); e.hasMoreElements(); )  {
+				String s = (String) e.nextElement();
+				String v = System.getProperty(s);
+				String l1 = s.toLowerCase();
+				String l2 = v.toLowerCase();
+
+				if (l1.indexOf("proxy") < 0 && l2.indexOf("proxy") < 0) {
+					continue;
+				}
+				if (l2.indexOf("https") < 0) {
+					continue;
+				}
+
+				String[] pieces = v.split("[,;]");
+				for (int i = 0; i < pieces.length; i++) {
+					String p = pieces[i];
+					int j = p.indexOf("https");
+					if (j < 0) {
+						continue;
+					}
+					j = p.indexOf("=", j);
+					if (j < 0) {
+						continue;
+					}
+					p = p.substring(j+1);
+					String [] hp = p.split(":");
+					if (hp.length != 2) {
+						continue;
+					}
+					if (hp[0].length() > 1 && hp[1].length() > 1) {
+						try {
+							Integer I = new Integer(hp[1]);
+							proxyPort = I.intValue();
+						} catch (Exception ex) {
+							continue;
+						}
+						proxyHost = new String(hp[0]);
+						break;
+					}
+				}
+			}
+		}
+		if (proxyHost != null) {
+			dbg("Lucky us! we figured out the Proxy parameters: " + proxyHost + " " + proxyPort);
+		} else {
+			/* ask user to help us: */
+			ProxyDialog pd = new ProxyDialog(proxyHost, proxyPort);
+			pd.queryUser();
+			proxyHost = pd.getHost(); 
+			proxyPort = pd.getPort();
+			dbg("User said host: " + pd.getHost() + " port: " + pd.getPort());
+		}
+
+		proxySock = psocket(proxyHost, proxyPort);
+		if (proxySock == null) {
+			dbg("1 sadly, returning a null socket");
+			return null;
+		}
+		String hp = host + ":" + port;
+
+		String req1 = "CONNECT " + hp + " HTTP/1.1\r\n"
+		    + "Host: " + hp + "\r\n\r\n";
+
+		/* not working for SSL yet: */
+		String req2 = "GET https://" + hp
+		    + "/request.https.proxy.connection HTTP/1.1\r\n"
+		    + "Host: " + hp + "\r\n\r\n";
+
+		dbg("requesting: " + req1);
+
+		try {
+			proxy_os.write(req1.getBytes());
+			String reply = readline(proxy_is);
+
+			dbg("proxy replied: " + reply);
+
+			if (reply.indexOf("HTTP/1.") < 0 && reply.indexOf(" 200") < 0) {
+				proxySock.close();
+				proxySock = psocket(proxyHost, proxyPort);
+				if (proxySock == null) {
+					dbg("2 sadly, returning a null socket");
+					return null;
+				}
+				dbg("requesting: " + req2);
+				proxy_os.write(req2.getBytes());
+
+				reply = readline(proxy_is);
+
+				dbg("proxy replied: " + reply);
+			}
+		} catch(Exception e) {
+			dbg("sock prob: " + e.getMessage());
+		}
+
+		while (true) {
+			String line = readline(proxy_is);
+			dbg("proxy line: " + line);
+			if (line.equals("\r\n") || line.equals("\n")) {
+				break;
+			}
+		}
+		
+		Socket sslsock = null;
+		try {
+			sslsock = factory.createSocket(proxySock, host, port, true);
+		} catch(Exception e) {
+			dbg("sslsock prob: " + e.getMessage());
+			dbg("3 sadly, returning a null socket");
+		}
+
+		return (SSLSocket) sslsock;
+	}
+
+	Socket psocket(String h, int p) {
+		Socket psock = null;
+		try {
+			psock = new Socket(h, p);
+			proxy_is = new DataInputStream(new BufferedInputStream(
+			    psock.getInputStream(), 16384));
+			proxy_os = psock.getOutputStream();
+		} catch(Exception e) {
+			dbg("psocket prob: " + e.getMessage());
+			return null;
+		}
+
+		return psock;
+	}
+
+	String readline(DataInputStream i) {
+		byte[] ba = new byte[1];
+		String s = new String("");
+		ba[0] = 0;
+		try {
+			while (ba[0] != 0xa) {
+				ba[0] = (byte) i.readUnsignedByte();
+				s += new String(ba);
+			}
+		} catch (Exception e) {
+			;
+		}
+		return s;
+	}
+}
+
+class TrustDialog implements ActionListener {
+	String msg, host, text;
+	int port;
+	java.security.cert.Certificate[] trustallCerts = null;
+	boolean viewing_cert = false;
+	boolean trust_this_session = false;
+
+	/*
+	 * this is the gui to show the user the cert and info and ask
+	 * them if they want to continue using this cert.
+	 */
+
+	Button ok, cancel, viewcert;
+	TextArea textarea;
+	Checkbox accept, deny;
+	Dialog dialog;
+
+	String s1 = "Accept this certificate temporarily for this session";
+	String s2 = "Do not accept this certificate and do not connect to"
+	    + " this VNC server";
+	String ln = "\n---------------------------------------------------\n\n";
+		
+	TrustDialog (String h, int p, java.security.cert.Certificate[] s) {
+		host = h;
+		port = p;
+		trustallCerts = s;
+
+		msg = "VNC Server " + host + ":" + port + " Not Verified";
+	}
+
+	public boolean queryUser() {
+
+		/* create and display the dialog for unverified cert. */
+
+		Frame frame = new Frame(msg);
+
+		dialog = new Dialog(frame, true);
+
+		String infostr = "";
+		if (trustallCerts.length == 1) {
+			CertInfo ci = new CertInfo(trustallCerts[0]);
+			infostr = ci.get_certinfo("all");
+		}
+
+		text = "\n" 
++ "Unable to verify the identity of\n"
++ "\n"
++ "        " + host + ":" + port + "\n" 
++ "\n"
++ infostr
++ "\n"
++ "as a trusted VNC server.\n"
++ "\n"
++ "This may be due to:\n"
++ "\n"
++ " - The VNC server using a Self-Signed Certificate.\n"
++ "\n"
++ " - The VNC server using a Certificate Authority not recognized by your\n"
++ "   Java applet runtime.\n"
++ "\n"
++ " - A Man-In-The-Middle attack impersonating as the VNC server you wish\n"
++ "   to connect to.\n"
++ "\n"
++ "By copying the VNC server's Certificate (or using a common Certificate\n"
++ "Authority certificate) you can configure your Java applet runtime to\n"
++ "automatically authenticate the Server.\n"
+;
+
+		/* the accept / do-not-accept radio buttons: */
+		CheckboxGroup checkbox = new CheckboxGroup();
+		accept = new Checkbox(s1, true, checkbox);
+		deny   = new Checkbox(s2, false, checkbox);
+
+		/* put the checkboxes in a panel: */
+		Panel check = new Panel();
+		check.setLayout(new GridLayout(2, 1));
+
+		check.add(accept);
+		check.add(deny);
+
+		/* make the 3 buttons: */
+		ok = new Button("OK");
+		cancel = new Button("Cancel");
+		viewcert = new Button("View Certificate");
+
+		ok.addActionListener(this);
+		cancel.addActionListener(this);
+		viewcert.addActionListener(this);
+
+		/* put the buttons in their own panel: */
+		Panel buttonrow = new Panel();
+		buttonrow.setLayout(new FlowLayout(FlowLayout.LEFT));
+		buttonrow.add(viewcert);
+		buttonrow.add(ok);
+		buttonrow.add(cancel);
+
+		/* label at the top: */
+		Label label = new Label(msg, Label.CENTER);
+		label.setFont(new Font("Helvetica", Font.BOLD, 16));
+
+		/* textarea in the middle */
+		textarea = new TextArea(text, 28, 64,
+		    TextArea.SCROLLBARS_VERTICAL_ONLY);
+		textarea.setEditable(false);
+
+		/* put the two panels in their own panel at bottom: */
+		Panel bot = new Panel();
+		bot.setLayout(new GridLayout(2, 1));
+		bot.add(check);
+		bot.add(buttonrow);
+
+		/* now arrange things inside the dialog: */
+		dialog.setLayout(new BorderLayout());
+
+		dialog.add("North", label);
+		dialog.add("South", bot);
+		dialog.add("Center", textarea);
+
+		dialog.pack();
+		dialog.resize(dialog.preferredSize());
+
+		dialog.show();	/* block here til OK or Cancel pressed. */
+
+		return trust_this_session;
+	}
+
+	public synchronized void actionPerformed(ActionEvent evt) {
+
+		if (evt.getSource() == viewcert) {
+			/* View Certificate button clicked */
+			if (viewing_cert) {
+				/* show the original info text: */
+				textarea.setText(text);
+				viewcert.setLabel("View Certificate");
+				viewing_cert = false;
+			} else {
+				int i;
+				/* show all (likely just one) certs: */
+				textarea.setText("");
+				for (i=0; i < trustallCerts.length; i++) {
+					int j = i + 1;
+					textarea.append("Certificate[" +
+					    j + "]\n\n");
+					textarea.append(
+					    trustallCerts[i].toString());
+					textarea.append(ln);
+				}
+				viewcert.setLabel("View Info");
+				viewing_cert = true;
+
+				textarea.setCaretPosition(0);
+			}
+
+		} else if (evt.getSource() == ok) {
+			/* OK button clicked */
+			if (accept.getState()) {
+				trust_this_session = true;
+			} else {
+				trust_this_session = false;
+			}
+			dialog.dispose();
+
+		} else if (evt.getSource() == cancel) {
+			/* Cancel button clicked */
+			trust_this_session = false;
+
+			dialog.dispose();
+		}
+	}
+
+	String get_certinfo() {
+		String all = "";
+		String fields[] = {"CN", "OU", "O", "L", "C"};
+		int i;
+		if (trustallCerts.length < 1) {
+			all = "";
+			return all;
+		}
+		String cert = trustallCerts[0].toString();
+
+		/*
+		 * For now we simply scrape the cert string, there must
+		 * be an API for this... perhaps optionValue?
+		 */
+
+		for (i=0; i < fields.length; i++) {
+			int f, t, t1, t2;
+			String sub, mat = fields[i] + "=";
+			
+			f = cert.indexOf(mat, 0);
+			if (f > 0) {
+				t1 = cert.indexOf(", ", f);
+				t2 = cert.indexOf("\n", f);
+				if (t1 < 0 && t2 < 0) {
+					continue;
+				} else if (t1 < 0) {
+					t = t2;
+				} else if (t2 < 0) {
+					t = t1;
+				} else if (t1 < t2) {
+					t = t1;
+				} else {
+					t = t2;
+				}
+				if (t > f) {
+					sub = cert.substring(f, t);
+					all = all + "        " + sub + "\n";
+				}
+			}
+		}
+		return all;
+	}
+}
+
+class ProxyDialog implements ActionListener {
+	String guessedHost = null;
+	String guessedPort = null;
+	/*
+	 * this is the gui to show the user the cert and info and ask
+	 * them if they want to continue using this cert.
+	 */
+
+	Button ok;
+	Dialog dialog;
+	TextField entry;
+	String reply = "";
+
+	ProxyDialog (String h, int p) {
+		guessedHost = h;
+		try {
+			guessedPort = Integer.toString(p);
+		} catch (Exception e) {
+			guessedPort = "8080";
+		}
+	}
+
+	public void queryUser() {
+
+		/* create and display the dialog for unverified cert. */
+
+		Frame frame = new Frame("Need Proxy host:port");
+
+		dialog = new Dialog(frame, true);
+
+
+		Label label = new Label("Please Enter your https Proxy info as host:port", Label.CENTER);
+		//label.setFont(new Font("Helvetica", Font.BOLD, 16));
+		entry = new TextField(30);
+		ok = new Button("OK");
+		ok.addActionListener(this);
+
+		String guess = "";
+		if (guessedHost != null) {
+			guess = guessedHost + ":" + guessedPort;
+		}
+		entry.setText(guess);
+
+		dialog.setLayout(new BorderLayout());
+		dialog.add("North", label);
+		dialog.add("Center", entry);
+		dialog.add("South", ok);
+		dialog.pack();
+		dialog.resize(dialog.preferredSize());
+
+		dialog.show();	/* block here til OK or Cancel pressed. */
+		return;
+	}
+
+	public String getHost() {
+		int i = reply.indexOf(":");
+		if (i < 0) {
+			return "unknown";
+		}
+		String h = reply.substring(0, i);
+		return h;
+	}
+
+	public int getPort() {
+		int i = reply.indexOf(":");
+		int p = 8080;
+		if (i < 0) {
+			return p;
+		}
+		i++;
+		String ps = reply.substring(i);
+		try {
+			Integer I = new Integer(ps);
+			p = I.intValue();
+		} catch (Exception e) {
+			;
+		}
+		return p;
+	}
+
+	public synchronized void actionPerformed(ActionEvent evt) {
+		System.out.println(evt.getActionCommand());
+		if (evt.getSource() == ok) {
+			reply = entry.getText();
+			dialog.dispose();
+		}
+	}
+}
+
+class BrowserCertsDialog implements ActionListener {
+	Button yes, no;
+	Dialog dialog;
+	String vncServer;
+	String hostport;
+	public boolean showCertDialog = true;
+
+	BrowserCertsDialog(String serv, String hp) {
+		vncServer = serv;
+		hostport = hp;
+	}
+
+	public void queryUser() {
+
+		/* create and display the dialog for unverified cert. */
+
+		Frame frame = new Frame("Use Browser/JVM Certs?");
+
+		dialog = new Dialog(frame, true);
+
+		String m = "\nShould this VNC Viewer applet use your Browser/JVM certs to\n";
+		m += "authenticate the VNC Server:\n";
+		m += "\n        " + hostport + "\n\n        " + vncServer + "\n\n";    
+		m += "(NOTE: this *includes* any certs you have Just Now accepted in a\n";
+		m += "dialog box with your Web Browser or Java Applet Plugin)\n\n";
+
+		TextArea textarea = new TextArea(m, 12, 64,
+		    TextArea.SCROLLBARS_VERTICAL_ONLY);
+		textarea.setEditable(false);
+		yes = new Button("Yes");
+		yes.addActionListener(this);
+		no = new Button("No, Let Me See the Certificate.");
+		no.addActionListener(this);
+
+		dialog.setLayout(new BorderLayout());
+		dialog.add("North", textarea);
+		dialog.add("Center", yes);
+		dialog.add("South", no);
+		dialog.pack();
+		dialog.resize(dialog.preferredSize());
+
+		dialog.show();	/* block here til Yes or No pressed. */
+		return;
+	}
+
+	public synchronized void actionPerformed(ActionEvent evt) {
+		System.out.println(evt.getActionCommand());
+		if (evt.getSource() == yes) {
+			showCertDialog = false;
+			dialog.dispose();
+		} else if (evt.getSource() == no) {
+			showCertDialog = true;
+			dialog.dispose();
+		}
+	}
+}
+
+class CertInfo {
+	String fields[] = {"CN", "OU", "O", "L", "C"};
+	java.security.cert.Certificate cert;
+	String certString = "";
+
+	CertInfo(java.security.cert.Certificate c) {
+		cert = c;
+		certString = cert.toString();
+	}
+	
+	String get_certinfo(String which) {
+		int i;
+		String cs = new String(certString);
+		String all = "";
+
+		/*
+		 * For now we simply scrape the cert string, there must
+		 * be an API for this... perhaps optionValue?
+		 */
+		for (i=0; i < fields.length; i++) {
+			int f, t, t1, t2;
+			String sub, mat = fields[i] + "=";
+			
+			f = cs.indexOf(mat, 0);
+			if (f > 0) {
+				t1 = cs.indexOf(", ", f);
+				t2 = cs.indexOf("\n", f);
+				if (t1 < 0 && t2 < 0) {
+					continue;
+				} else if (t1 < 0) {
+					t = t2;
+				} else if (t2 < 0) {
+					t = t1;
+				} else if (t1 < t2) {
+					t = t1;
+				} else {
+					t = t2;
+				}
+				if (t > f) {
+					sub = cs.substring(f, t);
+					all = all + "        " + sub + "\n";
+					if (which.equals(fields[i])) {
+						return sub;
+					}
+				}
+			}
+		}
+		if (which.equals("all")) {
+			return all;
+		} else {
+			return "";
+		}
+	}
+}
diff -x VncCanvas.java -Naur vnc_javasrc.orig/VncViewer.java vnc_javasrc/VncViewer.java
--- vnc_javasrc.orig/VncViewer.java	2004-03-04 08:34:25.000000000 -0500
+++ vnc_javasrc/VncViewer.java	2006-03-27 22:20:19.000000000 -0500
@@ -87,6 +87,7 @@
   int deferScreenUpdates;
   int deferCursorUpdates;
   int deferUpdateRequests;
+  boolean disableSSL;
 
   // Reference to this applet for inter-applet communication.
   public static java.applet.Applet refApplet;
@@ -626,6 +627,12 @@
 
     // SocketFactory.
     socketFactory = readParameter("SocketFactory", false);
+
+    // SSL
+    disableSSL = false;
+    str = readParameter("DisableSSL", false);
+    if (str != null && str.equalsIgnoreCase("Yes"))
+      disableSSL = true;
   }
 
   public String readParameter(String name, boolean required) {