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cloudstack/thirdparty/console/RfbProto.java
Frank e9652e67ad migrate premium to oss
2011-01-28 16:07:46 -08:00

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//
// Copyright (C) 2001-2004 HorizonLive.com, Inc. All Rights Reserved.
// Copyright (C) 2001-2006 Constantin Kaplinsky. All Rights Reserved.
// Copyright (C) 2000 Tridia Corporation. All Rights Reserved.
// Copyright (C) 1999 AT&T Laboratories Cambridge. 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; 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.
//
//
// RfbProto.java
//
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.util.zip.*;
import javax.net.SocketFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
class RfbProto {
final static String
versionMsg_3_3 = "RFB 003.003\n",
versionMsg_3_7 = "RFB 003.007\n",
versionMsg_3_8 = "RFB 003.008\n";
// Vendor signatures: standard VNC/RealVNC, TridiaVNC, and TightVNC
final static String
StandardVendor = "STDV",
TridiaVncVendor = "TRDV",
TightVncVendor = "TGHT";
// Security types
final static int
SecTypeInvalid = 0,
SecTypeNone = 1,
SecTypeVncAuth = 2,
SecTypeTight = 16;
// Supported tunneling types
final static int
NoTunneling = 0;
final static String
SigNoTunneling = "NOTUNNEL";
// Supported authentication types
final static int
AuthNone = 1,
AuthVNC = 2,
AuthUnixLogin = 129;
final static String
SigAuthNone = "NOAUTH__",
SigAuthVNC = "VNCAUTH_",
SigAuthUnixLogin = "ULGNAUTH";
// VNC authentication results
final static int
VncAuthOK = 0,
VncAuthFailed = 1,
VncAuthTooMany = 2;
// Server-to-client messages
final static int
FramebufferUpdate = 0,
SetColourMapEntries = 1,
Bell = 2,
ServerCutText = 3;
// Client-to-server messages
final static int
SetPixelFormat = 0,
FixColourMapEntries = 1,
SetEncodings = 2,
FramebufferUpdateRequest = 3,
KeyboardEvent = 4,
PointerEvent = 5,
ClientCutText = 6,
VMOpsClientCustom = 250;
// Supported encodings and pseudo-encodings
final static int
EncodingRaw = 0,
EncodingCopyRect = 1,
EncodingRRE = 2,
EncodingCoRRE = 4,
EncodingHextile = 5,
EncodingZlib = 6,
EncodingTight = 7,
EncodingZRLE = 16,
EncodingCompressLevel0 = 0xFFFFFF00,
EncodingQualityLevel0 = 0xFFFFFFE0,
EncodingXCursor = 0xFFFFFF10,
EncodingRichCursor = 0xFFFFFF11,
EncodingPointerPos = 0xFFFFFF18,
EncodingLastRect = 0xFFFFFF20,
EncodingNewFBSize = 0xFFFFFF21;
final static String
SigEncodingRaw = "RAW_____",
SigEncodingCopyRect = "COPYRECT",
SigEncodingRRE = "RRE_____",
SigEncodingCoRRE = "CORRE___",
SigEncodingHextile = "HEXTILE_",
SigEncodingZlib = "ZLIB____",
SigEncodingTight = "TIGHT___",
SigEncodingZRLE = "ZRLE____",
SigEncodingCompressLevel0 = "COMPRLVL",
SigEncodingQualityLevel0 = "JPEGQLVL",
SigEncodingXCursor = "X11CURSR",
SigEncodingRichCursor = "RCHCURSR",
SigEncodingPointerPos = "POINTPOS",
SigEncodingLastRect = "LASTRECT",
SigEncodingNewFBSize = "NEWFBSIZ";
final static int MaxNormalEncoding = 255;
// Contstants used in the Hextile decoder
final static int
HextileRaw = 1,
HextileBackgroundSpecified = 2,
HextileForegroundSpecified = 4,
HextileAnySubrects = 8,
HextileSubrectsColoured = 16;
// Contstants used in the Tight decoder
final static int TightMinToCompress = 12;
final static int
TightExplicitFilter = 0x04,
TightFill = 0x08,
TightJpeg = 0x09,
TightMaxSubencoding = 0x09,
TightFilterCopy = 0x00,
TightFilterPalette = 0x01,
TightFilterGradient = 0x02;
String host;
int port;
Socket sock;
SplitInputStream sis;
DataInputStream is;
OutputStream os;
SessionRecorder rec;
boolean inNormalProtocol = false;
ConsoleViewer viewer;
// Java on UNIX does not call keyPressed() on some keys, for example
// swedish keys To prevent our workaround to produce duplicate
// keypresses on JVMs that actually works, keep track of if
// keyPressed() for a "broken" key was called or not.
boolean brokenKeyPressed = false;
// This will be set to true on the first framebuffer update
// containing Zlib-, ZRLE- or Tight-encoded data.
boolean wereZlibUpdates = false;
// This will be set to false if the startSession() was called after
// we have received at least one Zlib-, ZRLE- or Tight-encoded
// framebuffer update.
boolean recordFromBeginning = true;
// This fields are needed to show warnings about inefficiently saved
// sessions only once per each saved session file.
boolean zlibWarningShown;
boolean tightWarningShown;
// Before starting to record each saved session, we set this field
// to 0, and increment on each framebuffer update. We don't flush
// the SessionRecorder data into the file before the second update.
// This allows us to write initial framebuffer update with zero
// timestamp, to let the player show initial desktop before
// playback.
int numUpdatesInSession;
// Measuring network throughput.
boolean timing;
long timeWaitedIn100us;
long timedKbits;
// Protocol version and TightVNC-specific protocol options.
int serverMajor, serverMinor;
int clientMajor, clientMinor;
boolean protocolTightVNC;
CapsContainer tunnelCaps, authCaps;
CapsContainer serverMsgCaps, clientMsgCaps;
CapsContainer encodingCaps;
// If true, informs that the RFB socket was closed.
private boolean closed;
//
// Constructor. Make TCP connection to RFB server.
//
RfbProto(String h, int p, ConsoleViewer v) throws IOException {
viewer = v;
host = h;
port = p;
if (!viewer.inProxyMode) {
/*
// Create a trust manager that does not validate certificate chains like the default TrustManager
TrustManager[] trustAllCerts = new TrustManager[]{
new X509TrustManager() {
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return null;
}
public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType) {
//No need to implement.
}
public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType) {
//No need to implement.
}
}
};
// Let us create the factory where we can set some parameters for the connection
SSLContext sc = null;
try {
sc = SSLContext.getInstance("SSL");
sc.init(null, trustAllCerts, new java.security.SecureRandom());
} catch (Exception e) {
throw new IOException(e);
}
SSLSocketFactory socketFactory =sc.getSocketFactory();
*/
SocketFactory socketFactory = SSLSocketFactory.getDefault();
sock = socketFactory.createSocket(host, port);
} else {
sock = new Socket();
sock.setSoTimeout(0); // infinite
sock.setKeepAlive(true);
sock.connect(new InetSocketAddress(host, port), 30000);
}
sis = new SplitInputStream(new BufferedInputStream(sock.getInputStream(), 16384));
is = new DataInputStream(sis);
os = sock.getOutputStream();
timing = false;
timeWaitedIn100us = 5;
timedKbits = 0;
}
synchronized void close() {
try {
if (sock != null && !closed) {
sock.close();
sock = null;
closed = true;
Logger.log(Logger.INFO, "RFB socket closed");
}
if (rec != null) {
rec.close();
rec = null;
}
} catch (Exception e) {
// Ignore
}
}
synchronized boolean closed() {
return closed;
}
//
// Read proxy's protocol version message
//
void readProxyVersion() throws Exception {
byte[] version = new byte[12];
readFully(version);
if (version[0] != 'R' || version[1] != 'F' || version[2] != 'B') {
throw new Exception("Bad version string from proxy");
}
}
//
// Write host:port to proxy
//
void writeProxyString(String realhost, int realport, String sid) throws IOException {
byte[] bs = (realhost + ":" + realport + ":" + sid + "\n").getBytes("US-ASCII");
//Logger.log(Logger.INFO, "writeProxyString " + realhost + ":" + realport );
os.write('V');
os.write('M');
os.write(bs.length);
os.write(bs);
}
//
// Read server's protocol version message
//
void readVersionMsg() throws Exception {
byte[] b = new byte[12];
readFully(b);
if ((b[0] != 'R') || (b[1] != 'F') || (b[2] != 'B') || (b[3] != ' ')
|| (b[4] < '0') || (b[4] > '9') || (b[5] < '0') || (b[5] > '9')
|| (b[6] < '0') || (b[6] > '9') || (b[7] != '.')
|| (b[8] < '0') || (b[8] > '9') || (b[9] < '0') || (b[9] > '9')
|| (b[10] < '0') || (b[10] > '9') || (b[11] != '\n'))
{
throw new Exception("Host " + host + " port " + port +
" is not an RFB server");
}
serverMajor = (b[4] - '0') * 100 + (b[5] - '0') * 10 + (b[6] - '0');
serverMinor = (b[8] - '0') * 100 + (b[9] - '0') * 10 + (b[10] - '0');
if (serverMajor < 3) {
throw new Exception("RFB server does not support protocol version 3");
}
}
//
// Write our protocol version message
//
void writeVersionMsg() throws IOException {
clientMajor = 3;
if (serverMajor > 3 || serverMinor >= 8) {
clientMinor = 8;
os.write(versionMsg_3_8.getBytes());
} else if (serverMinor >= 7) {
clientMinor = 7;
os.write(versionMsg_3_7.getBytes());
} else {
clientMinor = 3;
os.write(versionMsg_3_3.getBytes());
}
protocolTightVNC = false;
}
//
// Negotiate the authentication scheme.
//
int negotiateSecurity() throws Exception {
return (clientMinor >= 7) ?
selectSecurityType() : readSecurityType();
}
//
// Read security type from the server (protocol version 3.3).
//
int readSecurityType() throws Exception {
int secType = is.readInt();
switch (secType) {
case SecTypeInvalid:
readConnFailedReason();
return SecTypeInvalid; // should never be executed
case SecTypeNone:
case SecTypeVncAuth:
return secType;
default:
throw new Exception("Unknown security type from RFB server: " + secType);
}
}
//
// Select security type from the server's list (protocol versions 3.7/3.8).
//
int selectSecurityType() throws Exception {
int secType = SecTypeInvalid;
// Read the list of secutiry types.
int nSecTypes = is.readUnsignedByte();
if (nSecTypes == 0) {
readConnFailedReason();
return SecTypeInvalid; // should never be executed
}
byte[] secTypes = new byte[nSecTypes];
readFully(secTypes);
// Find out if the server supports TightVNC protocol extensions
for (int i = 0; i < nSecTypes; i++) {
if (secTypes[i] == SecTypeTight) {
protocolTightVNC = true;
os.write(SecTypeTight);
return SecTypeTight;
}
}
// Find first supported security type.
for (int i = 0; i < nSecTypes; i++) {
if (secTypes[i] == SecTypeNone || secTypes[i] == SecTypeVncAuth) {
secType = secTypes[i];
break;
}
}
if (secType == SecTypeInvalid) {
throw new Exception("Server did not offer supported security type");
} else {
os.write(secType);
}
return secType;
}
//
// Perform "no authentication".
//
void authenticateNone() throws Exception {
if (clientMinor >= 8)
readSecurityResult("No authentication");
}
//
// Perform standard VNC Authentication.
//
void authenticateVNC(String pw) throws Exception {
byte[] challenge = new byte[16];
readFully(challenge);
if (pw.length() > 8)
pw = pw.substring(0, 8); // Truncate to 8 chars
// Truncate password on the first zero byte.
int firstZero = pw.indexOf(0);
if (firstZero != -1)
pw = pw.substring(0, firstZero);
byte[] key = {0, 0, 0, 0, 0, 0, 0, 0};
System.arraycopy(pw.getBytes(), 0, key, 0, pw.length());
DesCipher des = new DesCipher(key);
des.encrypt(challenge, 0, challenge, 0);
des.encrypt(challenge, 8, challenge, 8);
os.write(challenge);
readSecurityResult("VNC authentication");
}
//
// Read security result.
// Throws an exception on authentication failure.
//
void readSecurityResult(String authType) throws Exception {
int securityResult = is.readInt();
switch (securityResult) {
case VncAuthOK:
// Logger.log(Logger.INFO, authType + ": success");
break;
case VncAuthFailed:
if (clientMinor >= 8)
readConnFailedReason();
throw new AuthenticationException(authType + ": failed");
case VncAuthTooMany:
throw new AuthenticationException(authType + ": failed, too many tries");
default:
throw new AuthenticationException(authType + ": unknown result " + securityResult);
}
}
//
// Read the string describing the reason for a connection failure,
// and throw an exception.
//
void readConnFailedReason() throws Exception {
int reasonLen = is.readInt();
byte[] reason = new byte[reasonLen];
readFully(reason);
throw new AuthenticationException(new String(reason));
}
//
// Initialize capability lists (TightVNC protocol extensions).
//
void initCapabilities() {
tunnelCaps = new CapsContainer();
authCaps = new CapsContainer();
serverMsgCaps = new CapsContainer();
clientMsgCaps = new CapsContainer();
encodingCaps = new CapsContainer();
// Supported authentication methods
authCaps.add(AuthNone, StandardVendor, SigAuthNone,
"No authentication");
authCaps.add(AuthVNC, StandardVendor, SigAuthVNC,
"Standard VNC password authentication");
// Supported encoding types
encodingCaps.add(EncodingCopyRect, StandardVendor,
SigEncodingCopyRect, "Standard CopyRect encoding");
encodingCaps.add(EncodingRRE, StandardVendor,
SigEncodingRRE, "Standard RRE encoding");
encodingCaps.add(EncodingCoRRE, StandardVendor,
SigEncodingCoRRE, "Standard CoRRE encoding");
encodingCaps.add(EncodingHextile, StandardVendor,
SigEncodingHextile, "Standard Hextile encoding");
encodingCaps.add(EncodingZRLE, StandardVendor,
SigEncodingZRLE, "Standard ZRLE encoding");
encodingCaps.add(EncodingZlib, TridiaVncVendor,
SigEncodingZlib, "Zlib encoding");
encodingCaps.add(EncodingTight, TightVncVendor,
SigEncodingTight, "Tight encoding");
// Supported pseudo-encoding types
encodingCaps.add(EncodingCompressLevel0, TightVncVendor,
SigEncodingCompressLevel0, "Compression level");
encodingCaps.add(EncodingQualityLevel0, TightVncVendor,
SigEncodingQualityLevel0, "JPEG quality level");
encodingCaps.add(EncodingXCursor, TightVncVendor,
SigEncodingXCursor, "X-style cursor shape update");
encodingCaps.add(EncodingRichCursor, TightVncVendor,
SigEncodingRichCursor, "Rich-color cursor shape update");
encodingCaps.add(EncodingPointerPos, TightVncVendor,
SigEncodingPointerPos, "Pointer position update");
encodingCaps.add(EncodingLastRect, TightVncVendor,
SigEncodingLastRect, "LastRect protocol extension");
encodingCaps.add(EncodingNewFBSize, TightVncVendor,
SigEncodingNewFBSize, "Framebuffer size change");
}
//
// Setup tunneling (TightVNC protocol extensions)
//
void setupTunneling() throws IOException {
int nTunnelTypes = is.readInt();
if (nTunnelTypes != 0) {
readCapabilityList(tunnelCaps, nTunnelTypes);
// We don't support tunneling yet.
writeInt(NoTunneling);
}
}
//
// Negotiate authentication scheme (TightVNC protocol extensions)
//
int negotiateAuthenticationTight() throws Exception {
int nAuthTypes = is.readInt();
if (nAuthTypes == 0)
return AuthNone;
readCapabilityList(authCaps, nAuthTypes);
for (int i = 0; i < authCaps.numEnabled(); i++) {
int authType = authCaps.getByOrder(i);
if (authType == AuthNone || authType == AuthVNC) {
writeInt(authType);
return authType;
}
}
throw new Exception("No suitable authentication scheme found");
}
//
// Read a capability list (TightVNC protocol extensions)
//
void readCapabilityList(CapsContainer caps, int count) throws IOException {
int code;
byte[] vendor = new byte[4];
byte[] name = new byte[8];
for (int i = 0; i < count; i++) {
code = is.readInt();
readFully(vendor);
readFully(name);
caps.enable(new CapabilityInfo(code, vendor, name));
}
}
//
// Write a 32-bit integer into the output stream.
//
void writeInt(int value) throws IOException {
byte[] b = new byte[4];
b[0] = (byte) ((value >> 24) & 0xff);
b[1] = (byte) ((value >> 16) & 0xff);
b[2] = (byte) ((value >> 8) & 0xff);
b[3] = (byte) (value & 0xff);
os.write(b);
}
//
// Write the client initialisation message
//
void writeClientInit() throws IOException {
if (viewer.options.shareDesktop) {
os.write(1);
} else {
os.write(0);
}
// viewer.options.disableShareDesktop();
}
//
// Read the server initialisation message
//
String desktopName;
int framebufferWidth, framebufferHeight;
int bitsPerPixel, depth;
boolean bigEndian, trueColour;
int redMax, greenMax, blueMax, redShift, greenShift, blueShift;
void readServerInit() throws IOException {
framebufferWidth = is.readUnsignedShort();
framebufferHeight = is.readUnsignedShort();
bitsPerPixel = is.readUnsignedByte();
depth = is.readUnsignedByte();
bigEndian = (is.readUnsignedByte() != 0);
trueColour = (is.readUnsignedByte() != 0);
redMax = is.readUnsignedShort();
greenMax = is.readUnsignedShort();
blueMax = is.readUnsignedShort();
redShift = is.readUnsignedByte();
greenShift = is.readUnsignedByte();
blueShift = is.readUnsignedByte();
byte[] pad = new byte[3];
readFully(pad);
int nameLength = is.readInt();
byte[] name = new byte[nameLength];
readFully(name);
desktopName = new String(name);
// Read interaction capabilities (TightVNC protocol extensions)
if (protocolTightVNC) {
int nServerMessageTypes = is.readUnsignedShort();
int nClientMessageTypes = is.readUnsignedShort();
int nEncodingTypes = is.readUnsignedShort();
is.readUnsignedShort();
readCapabilityList(serverMsgCaps, nServerMessageTypes);
readCapabilityList(clientMsgCaps, nClientMessageTypes);
readCapabilityList(encodingCaps, nEncodingTypes);
}
Logger.log(Logger.INFO, "Recv'd ServerInit w=" + framebufferWidth +
" h=" + framebufferHeight +
" bits=" + bitsPerPixel +
" depth=" + depth +
" name=" + desktopName);
inNormalProtocol = true;
}
//
// Create session file and write initial protocol messages into it.
//
void startSession(String fname) throws IOException {
rec = new SessionRecorder(fname);
rec.writeHeader();
rec.write(versionMsg_3_3.getBytes());
rec.writeIntBE(SecTypeNone);
rec.writeShortBE(framebufferWidth);
rec.writeShortBE(framebufferHeight);
byte[] fbsServerInitMsg = {
32, 24, 0, 1, 0,
(byte)0xFF, 0, (byte)0xFF, 0, (byte)0xFF,
16, 8, 0, 0, 0, 0
};
rec.write(fbsServerInitMsg);
rec.writeIntBE(desktopName.length());
rec.write(desktopName.getBytes());
numUpdatesInSession = 0;
// FIXME: If there were e.g. ZRLE updates only, that should not
// affect recording of Zlib and Tight updates. So, actually
// we should maintain separate flags for Zlib, ZRLE and
// Tight, instead of one ``wereZlibUpdates'' variable.
//
if (wereZlibUpdates)
recordFromBeginning = false;
zlibWarningShown = false;
tightWarningShown = false;
}
//
// Close session file.
//
void closeSession() throws IOException {
if (rec != null) {
rec.close();
rec = null;
}
}
//
// Set new framebuffer size
//
void setFramebufferSize(int width, int height) {
framebufferWidth = width;
framebufferHeight = height;
}
//
// Read the server message type
//
int readServerMessageType() throws IOException {
int msgType = is.readUnsignedByte();
// If the session is being recorded:
if (rec != null) {
if (msgType == Bell) { // Save Bell messages in session files.
rec.writeByte(msgType);
if (numUpdatesInSession > 0)
rec.flush();
}
}
return msgType;
}
//
// Read a FramebufferUpdate message
//
int updateNRects;
void readFramebufferUpdate() throws IOException {
is.readByte();
updateNRects = is.readUnsignedShort();
// If the session is being recorded:
if (rec != null) {
rec.writeByte(FramebufferUpdate);
rec.writeByte(0);
rec.writeShortBE(updateNRects);
}
numUpdatesInSession++;
}
// Read a FramebufferUpdate rectangle header
int updateRectX, updateRectY, updateRectW, updateRectH, updateRectEncoding;
void readFramebufferUpdateRectHdr() throws Exception {
updateRectX = is.readUnsignedShort();
updateRectY = is.readUnsignedShort();
updateRectW = is.readUnsignedShort();
updateRectH = is.readUnsignedShort();
updateRectEncoding = is.readInt();
if (updateRectEncoding == EncodingZlib ||
updateRectEncoding == EncodingZRLE ||
updateRectEncoding == EncodingTight)
wereZlibUpdates = true;
// If the session is being recorded:
if (rec != null) {
if (numUpdatesInSession > 1)
rec.flush(); // Flush the output on each rectangle.
rec.writeShortBE(updateRectX);
rec.writeShortBE(updateRectY);
rec.writeShortBE(updateRectW);
rec.writeShortBE(updateRectH);
if (updateRectEncoding == EncodingZlib && !recordFromBeginning) {
// Here we cannot write Zlib-encoded rectangles because the
// decoder won't be able to reproduce zlib stream state.
if (!zlibWarningShown) {
Logger.log(Logger.INFO, "Warning: Raw encoding will be used " +
"instead of Zlib in recorded session.");
zlibWarningShown = true;
}
rec.writeIntBE(EncodingRaw);
} else {
rec.writeIntBE(updateRectEncoding);
if (updateRectEncoding == EncodingTight && !recordFromBeginning &&
!tightWarningShown) {
Logger.log(Logger.INFO, "Warning: Re-compressing Tight-encoded " +
"updates for session recording.");
tightWarningShown = true;
}
}
}
if (updateRectEncoding < 0 || updateRectEncoding > MaxNormalEncoding)
return;
if (updateRectX + updateRectW > framebufferWidth ||
updateRectY + updateRectH > framebufferHeight) {
throw new Exception("Framebuffer update rectangle too large: " +
updateRectW + "x" + updateRectH + " at (" +
updateRectX + "," + updateRectY + ")");
}
}
// Read CopyRect source X and Y.
int copyRectSrcX, copyRectSrcY;
void readCopyRect() throws IOException {
copyRectSrcX = is.readUnsignedShort();
copyRectSrcY = is.readUnsignedShort();
// If the session is being recorded:
if (rec != null) {
rec.writeShortBE(copyRectSrcX);
rec.writeShortBE(copyRectSrcY);
}
}
//
// Read a ServerCutText message
//
String readServerCutText() throws IOException {
byte[] pad = new byte[3];
readFully(pad);
int len = is.readInt();
byte[] text = new byte[len];
readFully(text);
return new String(text);
}
//
// Read an integer in compact representation (1..3 bytes).
// Such format is used as a part of the Tight encoding.
// Also, this method records data if session recording is active and
// the viewer's recordFromBeginning variable is set to true.
//
int readCompactLen() throws IOException {
int[] portion = new int[3];
portion[0] = is.readUnsignedByte();
int byteCount = 1;
int len = portion[0] & 0x7F;
if ((portion[0] & 0x80) != 0) {
portion[1] = is.readUnsignedByte();
byteCount++;
len |= (portion[1] & 0x7F) << 7;
if ((portion[1] & 0x80) != 0) {
portion[2] = is.readUnsignedByte();
byteCount++;
len |= (portion[2] & 0xFF) << 14;
}
}
if (rec != null && recordFromBeginning)
for (int i = 0; i < byteCount; i++)
rec.writeByte(portion[i]);
return len;
}
//
// Write a VMOps Client Custom message
//
void writeClientCustomMessage(int type)
throws IOException
{
byte[] b = new byte[2];
b[0] = (byte) VMOpsClientCustom;
b[1] = (byte) type;
os.write(b);
}
//
// Write a FramebufferUpdateRequest message
//
void writeFramebufferUpdateRequest(int x, int y, int w, int h,
boolean incremental)
throws IOException
{
byte[] b = new byte[10];
b[0] = (byte) FramebufferUpdateRequest;
b[1] = (byte) (incremental ? 1 : 0);
b[2] = (byte) ((x >> 8) & 0xff);
b[3] = (byte) (x & 0xff);
b[4] = (byte) ((y >> 8) & 0xff);
b[5] = (byte) (y & 0xff);
b[6] = (byte) ((w >> 8) & 0xff);
b[7] = (byte) (w & 0xff);
b[8] = (byte) ((h >> 8) & 0xff);
b[9] = (byte) (h & 0xff);
os.write(b);
}
//
// Write a SetPixelFormat message
//
void writeSetPixelFormat(int bitsPerPixel, int depth, boolean bigEndian,
boolean trueColour,
int redMax, int greenMax, int blueMax,
int redShift, int greenShift, int blueShift)
throws IOException
{
byte[] b = new byte[20];
b[0] = (byte) SetPixelFormat;
b[4] = (byte) bitsPerPixel;
b[5] = (byte) depth;
b[6] = (byte) (bigEndian ? 1 : 0);
b[7] = (byte) (trueColour ? 1 : 0);
b[8] = (byte) ((redMax >> 8) & 0xff);
b[9] = (byte) (redMax & 0xff);
b[10] = (byte) ((greenMax >> 8) & 0xff);
b[11] = (byte) (greenMax & 0xff);
b[12] = (byte) ((blueMax >> 8) & 0xff);
b[13] = (byte) (blueMax & 0xff);
b[14] = (byte) redShift;
b[15] = (byte) greenShift;
b[16] = (byte) blueShift;
os.write(b);
}
//
// Write a FixColourMapEntries message. The values in the red, green and
// blue arrays are from 0 to 65535.
//
void writeFixColourMapEntries(int firstColour, int nColours,
int[] red, int[] green, int[] blue)
throws IOException
{
byte[] b = new byte[6 + nColours * 6];
b[0] = (byte) FixColourMapEntries;
b[2] = (byte) ((firstColour >> 8) & 0xff);
b[3] = (byte) (firstColour & 0xff);
b[4] = (byte) ((nColours >> 8) & 0xff);
b[5] = (byte) (nColours & 0xff);
for (int i = 0; i < nColours; i++) {
b[6 + i * 6] = (byte) ((red[i] >> 8) & 0xff);
b[6 + i * 6 + 1] = (byte) (red[i] & 0xff);
b[6 + i * 6 + 2] = (byte) ((green[i] >> 8) & 0xff);
b[6 + i * 6 + 3] = (byte) (green[i] & 0xff);
b[6 + i * 6 + 4] = (byte) ((blue[i] >> 8) & 0xff);
b[6 + i * 6 + 5] = (byte) (blue[i] & 0xff);
}
os.write(b);
}
//
// Write a SetEncodings message
//
void writeSetEncodings(int[] encs, int len) throws IOException {
byte[] b = new byte[4 + 4 * len];
b[0] = (byte) SetEncodings;
b[2] = (byte) ((len >> 8) & 0xff);
b[3] = (byte) (len & 0xff);
for (int i = 0; i < len; i++) {
b[4 + 4 * i] = (byte) ((encs[i] >> 24) & 0xff);
b[5 + 4 * i] = (byte) ((encs[i] >> 16) & 0xff);
b[6 + 4 * i] = (byte) ((encs[i] >> 8) & 0xff);
b[7 + 4 * i] = (byte) (encs[i] & 0xff);
}
os.write(b);
}
//
// Write a ClientCutText message
//
void writeClientCutText(String text) throws IOException {
byte[] b = new byte[8 + text.length()];
b[0] = (byte) ClientCutText;
b[4] = (byte) ((text.length() >> 24) & 0xff);
b[5] = (byte) ((text.length() >> 16) & 0xff);
b[6] = (byte) ((text.length() >> 8) & 0xff);
b[7] = (byte) (text.length() & 0xff);
System.arraycopy(text.getBytes(), 0, b, 8, text.length());
os.write(b);
}
//
// A buffer for putting pointer and keyboard events before being sent. This
// is to ensure that multiple RFB events generated from a single Java Event
// will all be sent in a single network packet. The maximum possible
// length is 4 modifier down events, a single key event followed by 4
// modifier up events i.e. 9 key events or 72 bytes.
//
byte[] eventBuf = new byte[72];
int eventBufLen;
// Useful shortcuts for modifier masks.
final static int CTRL_MASK = InputEvent.CTRL_MASK;
final static int SHIFT_MASK = InputEvent.SHIFT_MASK;
final static int META_MASK = InputEvent.META_MASK;
final static int ALT_MASK = InputEvent.ALT_MASK;
//
// Write a pointer event message. We may need to send modifier key events
// around it to set the correct modifier state.
//
int pointerMask = 0;
void writePointerEvent(MouseEvent evt) throws IOException {
int modifiers = evt.getModifiers();
int mask2 = 2;
int mask3 = 4;
if (viewer.options.reverseMouseButtons2And3) {
mask2 = 4;
mask3 = 2;
}
// Note: For some reason, AWT does not set BUTTON1_MASK on left
// button presses. Here we think that it was the left button if
// modifiers do not include BUTTON2_MASK or BUTTON3_MASK.
if (evt.getID() == MouseEvent.MOUSE_PRESSED) {
if ((modifiers & InputEvent.BUTTON2_MASK) != 0) {
pointerMask = mask2;
modifiers &= ~ALT_MASK;
} else if ((modifiers & InputEvent.BUTTON3_MASK) != 0) {
pointerMask = mask3;
modifiers &= ~META_MASK;
} else {
pointerMask = 1;
}
} else if (evt.getID() == MouseEvent.MOUSE_RELEASED) {
pointerMask = 0;
if ((modifiers & InputEvent.BUTTON2_MASK) != 0) {
modifiers &= ~ALT_MASK;
} else if ((modifiers & InputEvent.BUTTON3_MASK) != 0) {
modifiers &= ~META_MASK;
}
}
eventBufLen = 0;
writeModifierKeyEvents(modifiers);
int x = evt.getX();
int y = evt.getY();
if (x < 0) x = 0;
if (y < 0) y = 0;
eventBuf[eventBufLen++] = (byte) PointerEvent;
eventBuf[eventBufLen++] = (byte) pointerMask;
eventBuf[eventBufLen++] = (byte) ((x >> 8) & 0xff);
eventBuf[eventBufLen++] = (byte) (x & 0xff);
eventBuf[eventBufLen++] = (byte) ((y >> 8) & 0xff);
eventBuf[eventBufLen++] = (byte) (y & 0xff);
//
// Always release all modifiers after an "up" event
//
if (pointerMask == 0) {
writeModifierKeyEvents(0);
}
os.write(eventBuf, 0, eventBufLen);
}
//
// Write a key event message. We may need to send modifier key events
// around it to set the correct modifier state. Also we need to translate
// from the Java key values to the X keysym values used by the RFB protocol.
//
void writeKeyEvent(KeyEvent evt) throws IOException {
int keyChar = evt.getKeyChar();
//
// Ignore event if only modifiers were pressed.
//
// Some JVMs return 0 instead of CHAR_UNDEFINED in getKeyChar().
if (keyChar == 0)
keyChar = KeyEvent.CHAR_UNDEFINED;
if (keyChar == KeyEvent.CHAR_UNDEFINED) {
int code = evt.getKeyCode();
if (code == KeyEvent.VK_CONTROL || code == KeyEvent.VK_SHIFT ||
code == KeyEvent.VK_META || code == KeyEvent.VK_ALT)
return;
}
//
// Key press or key release?
//
boolean down = (evt.getID() == KeyEvent.KEY_PRESSED);
int key;
if (evt.isActionKey()) {
//
// An action key should be one of the following.
// If not then just ignore the event.
//
switch(evt.getKeyCode()) {
case KeyEvent.VK_HOME: key = 0xff50; break;
case KeyEvent.VK_LEFT: key = 0xff51; break;
case KeyEvent.VK_UP: key = 0xff52; break;
case KeyEvent.VK_RIGHT: key = 0xff53; break;
case KeyEvent.VK_DOWN: key = 0xff54; break;
case KeyEvent.VK_PAGE_UP: key = 0xff55; break;
case KeyEvent.VK_PAGE_DOWN: key = 0xff56; break;
case KeyEvent.VK_END: key = 0xff57; break;
case KeyEvent.VK_INSERT: key = 0xff63; break;
case KeyEvent.VK_F1: key = 0xffbe; break;
case KeyEvent.VK_F2: key = 0xffbf; break;
case KeyEvent.VK_F3: key = 0xffc0; break;
case KeyEvent.VK_F4: key = 0xffc1; break;
case KeyEvent.VK_F5: key = 0xffc2; break;
case KeyEvent.VK_F6: key = 0xffc3; break;
case KeyEvent.VK_F7: key = 0xffc4; break;
case KeyEvent.VK_F8: key = 0xffc5; break;
case KeyEvent.VK_F9: key = 0xffc6; break;
case KeyEvent.VK_F10: key = 0xffc7; break;
case KeyEvent.VK_F11: key = 0xffc8; break;
case KeyEvent.VK_F12: key = 0xffc9; break;
default:
return;
}
} else {
//
// A "normal" key press. Ordinary ASCII characters go straight through.
// For CTRL-<letter>, CTRL is sent separately so just send <letter>.
// Backspace, tab, return, escape and delete have special keysyms.
// Anything else we ignore.
//
key = keyChar;
if (key < 0x20) {
if (evt.isControlDown()) {
key += 0x60;
} else {
switch(key) {
case KeyEvent.VK_BACK_SPACE: key = 0xff08; break;
case KeyEvent.VK_TAB: key = 0xff09; break;
case KeyEvent.VK_ENTER: key = 0xff0d; break;
case KeyEvent.VK_ESCAPE: key = 0xff1b; break;
}
}
} else if (key == 0x7f) {
// Delete
key = 0xffff;
} else if (key > 0xff) {
// JDK1.1 on X incorrectly passes some keysyms straight through,
// so we do too. JDK1.1.4 seems to have fixed this.
// The keysyms passed are 0xff00 .. XK_BackSpace .. XK_Delete
// Also, we pass through foreign currency keysyms (0x20a0..0x20af).
if ((key < 0xff00 || key > 0xffff) &&
!(key >= 0x20a0 && key <= 0x20af))
return;
}
}
// Fake keyPresses for keys that only generates keyRelease events
if ((key == 0xe5) || (key == 0xc5) || // XK_aring / XK_Aring
(key == 0xe4) || (key == 0xc4) || // XK_adiaeresis / XK_Adiaeresis
(key == 0xf6) || (key == 0xd6) || // XK_odiaeresis / XK_Odiaeresis
(key == 0xa7) || (key == 0xbd) || // XK_section / XK_onehalf
(key == 0xa3)) { // XK_sterling
// Make sure we do not send keypress events twice on platforms
// with correct JVMs (those that actually report KeyPress for all
// keys)
if (down)
brokenKeyPressed = true;
if (!down && !brokenKeyPressed) {
// We've got a release event for this key, but haven't received
// a press. Fake it.
eventBufLen = 0;
writeModifierKeyEvents(evt.getModifiers());
writeKeyEvent(key, true);
os.write(eventBuf, 0, eventBufLen);
}
if (!down)
brokenKeyPressed = false;
}
eventBufLen = 0;
writeModifierKeyEvents(evt.getModifiers());
writeKeyEvent(key, down);
// Always release all modifiers after an "up" event
if (!down)
writeModifierKeyEvents(0);
os.write(eventBuf, 0, eventBufLen);
}
//
// Add a raw key event with the given X keysym to eventBuf.
//
void writeKeyEvent(int keysym, boolean down) {
eventBuf[eventBufLen++] = (byte) KeyboardEvent;
eventBuf[eventBufLen++] = (byte) (down ? 1 : 0);
eventBuf[eventBufLen++] = (byte) 0;
eventBuf[eventBufLen++] = (byte) 0;
eventBuf[eventBufLen++] = (byte) ((keysym >> 24) & 0xff);
eventBuf[eventBufLen++] = (byte) ((keysym >> 16) & 0xff);
eventBuf[eventBufLen++] = (byte) ((keysym >> 8) & 0xff);
eventBuf[eventBufLen++] = (byte) (keysym & 0xff);
}
//
// Write key events to set the correct modifier state.
//
int oldModifiers = 0;
void writeModifierKeyEvents(int newModifiers) {
if ((newModifiers & CTRL_MASK) != (oldModifiers & CTRL_MASK))
writeKeyEvent(0xffe3, (newModifiers & CTRL_MASK) != 0);
if ((newModifiers & SHIFT_MASK) != (oldModifiers & SHIFT_MASK))
writeKeyEvent(0xffe1, (newModifiers & SHIFT_MASK) != 0);
if ((newModifiers & META_MASK) != (oldModifiers & META_MASK))
writeKeyEvent(0xffe7, (newModifiers & META_MASK) != 0);
if ((newModifiers & ALT_MASK) != (oldModifiers & ALT_MASK))
writeKeyEvent(0xffe9, (newModifiers & ALT_MASK) != 0);
oldModifiers = newModifiers;
}
//
// Compress and write the data into the recorded session file. This
// method assumes the recording is on (rec != null).
//
void recordCompressedData(byte[] data, int off, int len) throws IOException {
Deflater deflater = new Deflater();
deflater.setInput(data, off, len);
int bufSize = len + len / 100 + 12;
byte[] buf = new byte[bufSize];
deflater.finish();
int compressedSize = deflater.deflate(buf);
recordCompactLen(compressedSize);
rec.write(buf, 0, compressedSize);
}
void recordCompressedData(byte[] data) throws IOException {
recordCompressedData(data, 0, data.length);
}
//
// Write an integer in compact representation (1..3 bytes) into the
// recorded session file. This method assumes the recording is on
// (rec != null).
//
void recordCompactLen(int len) throws IOException {
byte[] buf = new byte[3];
int bytes = 0;
buf[bytes++] = (byte)(len & 0x7F);
if (len > 0x7F) {
buf[bytes-1] |= 0x80;
buf[bytes++] = (byte)(len >> 7 & 0x7F);
if (len > 0x3FFF) {
buf[bytes-1] |= 0x80;
buf[bytes++] = (byte)(len >> 14 & 0xFF);
}
}
rec.write(buf, 0, bytes);
}
public void startTiming() {
timing = true;
// Carry over up to 1s worth of previous rate for smoothing.
if (timeWaitedIn100us > 10000) {
timedKbits = timedKbits * 10000 / timeWaitedIn100us;
timeWaitedIn100us = 10000;
}
}
public void stopTiming() {
timing = false;
if (timeWaitedIn100us < timedKbits/2)
timeWaitedIn100us = timedKbits/2; // upper limit 20Mbit/s
}
public long kbitsPerSecond() {
return timedKbits * 10000 / timeWaitedIn100us;
}
public long timeWaited() {
return timeWaitedIn100us;
}
public void readFully(byte b[]) throws IOException {
readFully(b, 0, b.length);
}
public void readFully(byte b[], int off, int len) throws IOException {
long before = 0;
if (timing)
before = System.currentTimeMillis();
is.readFully(b, off, len);
if (timing) {
long after = System.currentTimeMillis();
long newTimeWaited = (after - before) * 10;
int newKbits = len * 8 / 1000;
// limit rate to between 10kbit/s and 40Mbit/s
if (newTimeWaited > newKbits*1000) newTimeWaited = newKbits*1000;
if (newTimeWaited < newKbits/4) newTimeWaited = newKbits/4;
timeWaitedIn100us += newTimeWaited;
timedKbits += newKbits;
}
}
}
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