mirror of
https://github.com/xcp-ng/xenadmin.git
synced 2024-12-25 11:49:52 +01:00
1440 lines
50 KiB
C#
1440 lines
50 KiB
C#
/* Copyright (c) Citrix Systems, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms,
|
|
* with or without modification, are permitted provided
|
|
* that the following conditions are met:
|
|
*
|
|
* * Redistributions of source code must retain the above
|
|
* copyright notice, this list of conditions and the
|
|
* following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the
|
|
* following disclaimer in the documentation and/or other
|
|
* materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
|
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
|
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
using System;
|
|
using System.Threading;
|
|
using System.IO;
|
|
using System.Drawing;
|
|
using System.Drawing.Imaging;
|
|
using System.Text;
|
|
using System.Text.RegularExpressions;
|
|
using System.Runtime.InteropServices;
|
|
using System.Security.Cryptography;
|
|
using XenAdmin.Core;
|
|
|
|
namespace DotNetVnc
|
|
{
|
|
public class VNCStream
|
|
{
|
|
private const int THUMBNAIL_SLEEP_TIME = 500;
|
|
|
|
private const int RAW_ENCODING = 0;
|
|
private const int COPY_RECTANGLE_ENCODING = 1;
|
|
private const int RRE_ENCODING = 2;
|
|
private const int CORRE_ENCODING = 4;
|
|
private const int HEXTILE_ENCODING = 5;
|
|
private const int CURSOR_PSEUDO_ENCODING = -239;
|
|
private const int DESKTOP_SIZE_PSEUDO_ENCODING = -223;
|
|
private const int XENCENTER_ENCODING = -254;
|
|
|
|
private const int SET_PIXEL_FORMAT = 0;
|
|
private const int SET_ENCODINGS = 2;
|
|
private const int FRAMEBUFFER_UPDATE_REQUEST = 3;
|
|
private const int KEY_EVENT = 4;
|
|
private const int KEY_SCAN_EVENT = 254;
|
|
private const int POINTER_EVENT = 5;
|
|
private const int CLIENT_CUT_TEXT = 6;
|
|
|
|
private const int RAW_SUBENCODING = 1;
|
|
private const int BACKGROUND_SPECIFIED_SUBENCODING = 2;
|
|
private const int FOREGROUND_SPECIFIED_SUBENCODING = 4;
|
|
private const int ANY_SUBRECTS_SUBENCODING = 8;
|
|
private const int SUBRECTS_COLORED_SUBENCODING = 16;
|
|
|
|
private const int FRAME_BUFFER_UPDATE = 0;
|
|
private const int BELL = 2;
|
|
private const int SERVER_CUT_TEXT = 3;
|
|
|
|
private static readonly log4net.ILog Log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
|
|
|
|
private Thread thread = null;
|
|
|
|
/**
|
|
* Current color properties
|
|
*/
|
|
private int bitsPerPixel;
|
|
private int bytesPerPixel;
|
|
private int depth;
|
|
private bool bigEndian;
|
|
private bool trueColor;
|
|
private int redMax;
|
|
private int greenMax;
|
|
private int blueMax;
|
|
private int redMaxPlus1;
|
|
private int greenMaxPlus1;
|
|
private int blueMaxPlus1;
|
|
private int redMaxOver2;
|
|
private int greenMaxOver2;
|
|
private int blueMaxOver2;
|
|
private int redShift;
|
|
private int greenShift;
|
|
private int blueShift;
|
|
private bool rgb565;
|
|
|
|
/// <summary>
|
|
/// This event will be fired when an error occurs. The helper thread is guaranteed to be
|
|
/// closing down at this point.
|
|
/// </summary>
|
|
public event XenAdmin.ExceptionEventHandler ErrorOccurred = null;
|
|
|
|
public event EventHandler ConnectionSuccess = null;
|
|
|
|
/**
|
|
* The encodings used. Note that these are ordered: preferred encoding first.
|
|
*/
|
|
private static readonly int[] encodings = new int[] {
|
|
//HEXTILE_ENCODING,
|
|
CORRE_ENCODING,
|
|
RRE_ENCODING,
|
|
COPY_RECTANGLE_ENCODING,
|
|
RAW_ENCODING,
|
|
CURSOR_PSEUDO_ENCODING,
|
|
DESKTOP_SIZE_PSEUDO_ENCODING,
|
|
XENCENTER_ENCODING
|
|
};
|
|
|
|
private readonly IVNCGraphicsClient client;
|
|
|
|
private readonly MyStream stream;
|
|
|
|
private readonly Object writeLock = new Object();
|
|
private Object pauseMonitor = new Object();
|
|
|
|
private volatile bool running = true;
|
|
|
|
private int width;
|
|
private int height;
|
|
|
|
private bool incremental;
|
|
|
|
private PixelFormat pixelFormat;
|
|
private PixelFormat pixelFormatCursor;
|
|
|
|
private byte[] data = new byte[1228800]; //640*480*32bpp
|
|
private byte[] data_8bpp = null;
|
|
|
|
private readonly long imageUpdateThreshold;
|
|
|
|
/*
|
|
public struct StatsEntry
|
|
{
|
|
public double time;
|
|
public int size;
|
|
}
|
|
*/
|
|
|
|
public VNCStream(IVNCGraphicsClient client, Stream stream, bool startPaused)
|
|
{
|
|
this.client = client;
|
|
this.stream = new MyStream(stream);
|
|
this.paused = startPaused;
|
|
|
|
long freq;
|
|
if (!Win32.QueryPerformanceFrequency(out freq))
|
|
{
|
|
System.Diagnostics.Trace.Assert(false);
|
|
}
|
|
imageUpdateThreshold = freq / 3;
|
|
}
|
|
|
|
public void connect(char[] password)
|
|
{
|
|
System.Diagnostics.Trace.Assert(thread == null);
|
|
|
|
thread = new Thread(this.run);
|
|
thread.Name = String.Format("VNC connection to {0} - {1}", client.VmName, client.UUID);
|
|
thread.IsBackground = true;
|
|
thread.Start(password);
|
|
}
|
|
|
|
private ProtocolVersion getProtocolVersion()
|
|
{
|
|
byte[] buffer = new byte[12];
|
|
this.stream.readFully(buffer, 0, 12);
|
|
char[] chars = new char[12];
|
|
Encoding.ASCII.GetDecoder().GetChars(buffer, 0, 12, chars, 0);
|
|
String s = new String(chars);
|
|
Regex regex = new Regex("RFB ([0-9]{3})\\.([0-9]{3})\n");
|
|
Match match = regex.Match(s);
|
|
if (!match.Success)
|
|
{
|
|
throw new VNCException("expected protocol version: " + s);
|
|
}
|
|
|
|
return new ProtocolVersion(Int32.Parse(match.Groups[1].Value),
|
|
Int32.Parse(match.Groups[2].Value));
|
|
}
|
|
|
|
private void sendProtocolVersion()
|
|
{
|
|
lock (this.writeLock)
|
|
{
|
|
byte[] bytes = Encoding.ASCII.GetBytes("RFB 003.003\n");
|
|
this.stream.Write(bytes, 0, bytes.Length);
|
|
this.stream.Flush();
|
|
}
|
|
}
|
|
|
|
private void readPixelFormat()
|
|
{
|
|
this.bitsPerPixel = this.stream.readCard8();
|
|
this.depth = this.stream.readCard8();
|
|
this.bigEndian = this.stream.readFlag();
|
|
this.trueColor = this.stream.readFlag();
|
|
this.redMax = this.stream.readCard16();
|
|
this.greenMax = this.stream.readCard16();
|
|
this.blueMax = this.stream.readCard16();
|
|
this.redShift = this.stream.readCard8();
|
|
this.greenShift = this.stream.readCard8();
|
|
this.blueShift = this.stream.readCard8();
|
|
this.stream.readPadding(3);
|
|
Log.Debug("readPixelFormat " + this.bitsPerPixel +
|
|
" " + this.depth);
|
|
}
|
|
|
|
private void writePixelFormat()
|
|
{
|
|
Log.Debug("writePixelFormat " + this.bitsPerPixel +
|
|
" " + this.depth);
|
|
this.stream.writeInt8(SET_PIXEL_FORMAT);
|
|
this.stream.writePadding(3);
|
|
|
|
this.stream.writeInt8(this.bitsPerPixel);
|
|
this.stream.writeInt8(this.depth);
|
|
this.stream.writeFlag(this.bigEndian);
|
|
this.stream.writeFlag(this.trueColor);
|
|
this.stream.writeInt16(this.redMax);
|
|
this.stream.writeInt16(this.greenMax);
|
|
this.stream.writeInt16(this.blueMax);
|
|
this.stream.writeInt8(this.redShift);
|
|
this.stream.writeInt8(this.greenShift);
|
|
this.stream.writeInt8(this.blueShift);
|
|
|
|
this.stream.writePadding(3);
|
|
}
|
|
|
|
private void force32bpp()
|
|
{
|
|
Log.Debug("force32bpp()");
|
|
|
|
this.bitsPerPixel = 32;
|
|
this.depth = 24;
|
|
this.trueColor = true;
|
|
this.redMax = 255;
|
|
this.greenMax = 255;
|
|
this.blueMax = 255;
|
|
this.redShift = 16;
|
|
this.greenShift = 8;
|
|
this.blueShift = 0;
|
|
|
|
// Note that we keep the endian value from the server.
|
|
|
|
setupPixelFormat();
|
|
|
|
lock (this.writeLock)
|
|
{
|
|
writePixelFormat();
|
|
}
|
|
}
|
|
|
|
|
|
private void setupPixelFormat()
|
|
{
|
|
Log.Debug("setupPixelFormat(" + bitsPerPixel + ")");
|
|
|
|
bytesPerPixel = bitsPerPixel >> 3;
|
|
|
|
redMaxPlus1 = redMax + 1;
|
|
greenMaxPlus1 = greenMax + 1;
|
|
blueMaxPlus1 = blueMax + 1;
|
|
|
|
redMaxOver2 = redMax >> 1;
|
|
greenMaxOver2 = greenMax >> 1;
|
|
blueMaxOver2 = blueMax >> 1;
|
|
|
|
if (bitsPerPixel == 32 || bitsPerPixel == 8)
|
|
{
|
|
pixelFormat = PixelFormat.Format32bppRgb;
|
|
pixelFormatCursor = PixelFormat.Format32bppArgb;
|
|
}
|
|
else if (bitsPerPixel == 16)
|
|
{
|
|
rgb565 = redShift == 11;
|
|
pixelFormat =
|
|
rgb565 ?
|
|
PixelFormat.Format16bppRgb565 :
|
|
PixelFormat.Format16bppRgb555;
|
|
pixelFormatCursor = PixelFormat.Format16bppArgb1555;
|
|
}
|
|
else
|
|
{
|
|
throw new IOException("unexpected bits per pixel: " + bitsPerPixel);
|
|
}
|
|
}
|
|
|
|
private void writeSetEncodings()
|
|
{
|
|
Log.Debug("writeSetEncodings");
|
|
this.stream.writeInt8(SET_ENCODINGS);
|
|
this.stream.writePadding(1);
|
|
this.stream.writeInt16(encodings.Length);
|
|
for (int i = 0; i < encodings.Length; ++i)
|
|
{
|
|
this.stream.writeInt32(encodings[i]);
|
|
}
|
|
}
|
|
|
|
private void writeFramebufferUpdateRequest(
|
|
int x, int y, int width, int height, bool incremental
|
|
)
|
|
{
|
|
this.stream.writeInt8(FRAMEBUFFER_UPDATE_REQUEST);
|
|
this.stream.writeFlag(incremental);
|
|
this.stream.writeInt16(x);
|
|
this.stream.writeInt16(y);
|
|
this.stream.writeInt16(width);
|
|
this.stream.writeInt16(height);
|
|
}
|
|
|
|
private void handshake()
|
|
{
|
|
ProtocolVersion protocolVersion = getProtocolVersion();
|
|
if (protocolVersion.major < 3)
|
|
{
|
|
throw new VNCException(
|
|
"don't know protocol version " + protocolVersion.major
|
|
);
|
|
}
|
|
}
|
|
|
|
private void authenticationExchange(char[] password)
|
|
{
|
|
Log.Debug("authenticationExchange");
|
|
|
|
int scheme = this.stream.readCard32();
|
|
if (scheme == 0)
|
|
{
|
|
String reason = this.stream.readString();
|
|
throw new VNCException("connection failed: " + reason);
|
|
}
|
|
else if (scheme == 1)
|
|
{
|
|
// no authentication needed
|
|
}
|
|
else if (scheme == 2)
|
|
{
|
|
PasswordAuthentication(password);
|
|
}
|
|
else
|
|
{
|
|
throw new VNCException(
|
|
"unexpected authentication scheme: " + scheme
|
|
);
|
|
}
|
|
}
|
|
|
|
private void PasswordAuthentication(char[] password)
|
|
{
|
|
byte[] keyBytes = new byte[8];
|
|
for (int i = 0; (i < 8) && (i < password.Length); ++i)
|
|
{
|
|
keyBytes[i] = reverse((byte)password[i]);
|
|
}
|
|
|
|
DESCryptoServiceProvider des =
|
|
new DESCryptoServiceProvider();
|
|
|
|
des.Padding = PaddingMode.None;
|
|
des.Mode = CipherMode.ECB;
|
|
|
|
ICryptoTransform chiper =
|
|
des.CreateEncryptor(keyBytes, null);
|
|
|
|
byte[] challenge = new byte[16];
|
|
this.stream.readFully(challenge, 0, 16);
|
|
|
|
byte[] response = chiper.TransformFinalBlock(challenge, 0, 16);
|
|
|
|
this.stream.Write(response, 0, 16);
|
|
this.stream.Flush();
|
|
|
|
int status = this.stream.readCard32();
|
|
|
|
if (status == 0)
|
|
{
|
|
// ok
|
|
}
|
|
else if (status == 1 || status == 2)
|
|
{
|
|
throw new VNCAuthenticationException();
|
|
}
|
|
else
|
|
{
|
|
throw new VNCException("Bad Authentication Response");
|
|
}
|
|
}
|
|
|
|
private static byte reverse(byte v)
|
|
{
|
|
byte r = 0;
|
|
if ((v & 0x01) != 0) r |= 0x80;
|
|
if ((v & 0x02) != 0) r |= 0x40;
|
|
if ((v & 0x04) != 0) r |= 0x20;
|
|
if ((v & 0x08) != 0) r |= 0x10;
|
|
if ((v & 0x10) != 0) r |= 0x08;
|
|
if ((v & 0x20) != 0) r |= 0x04;
|
|
if ((v & 0x40) != 0) r |= 0x02;
|
|
if ((v & 0x80) != 0) r |= 0x01;
|
|
return r;
|
|
}
|
|
|
|
private void clientInitialization()
|
|
{
|
|
Log.Debug("clientInitialisation");
|
|
lock (this.writeLock)
|
|
{
|
|
this.stream.writeFlag(true); // shared
|
|
this.stream.Flush();
|
|
}
|
|
}
|
|
|
|
private void serverInitialization()
|
|
{
|
|
Log.Debug("serverInitialisation");
|
|
int width = this.stream.readCard16();
|
|
int height = this.stream.readCard16();
|
|
|
|
readPixelFormat();
|
|
|
|
stream.readString(); /* The desktop name -- we don't care. */
|
|
|
|
if (trueColor)
|
|
{
|
|
setupPixelFormat();
|
|
lock (writeLock)
|
|
{
|
|
writePixelFormat();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
force32bpp();
|
|
}
|
|
|
|
desktopSize(width, height);
|
|
|
|
lock (this.writeLock)
|
|
{
|
|
writeSetEncodings();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Expects to be lock on writeLock.
|
|
*/
|
|
private void writeKey(int command, bool down, int key)
|
|
{
|
|
this.stream.writeInt8(command); //Send Scancodes
|
|
this.stream.writeFlag(down);
|
|
this.stream.writePadding(2);
|
|
this.stream.writeInt32(key);
|
|
}
|
|
|
|
public void keyScanEvent(bool down, int key)
|
|
{
|
|
lock (this.writeLock)
|
|
{
|
|
try
|
|
{
|
|
writeKey(KEY_SCAN_EVENT, down, key);
|
|
this.stream.Flush();
|
|
}
|
|
catch (IOException e)
|
|
{
|
|
Log.Warn(e, e);
|
|
}
|
|
}
|
|
}
|
|
|
|
public void keyCodeEvent(bool down, int key)
|
|
{
|
|
lock (this.writeLock)
|
|
{
|
|
try
|
|
{
|
|
writeKey(KEY_EVENT, down, key);
|
|
this.stream.Flush();
|
|
}
|
|
catch (IOException e)
|
|
{
|
|
Log.Warn(e, e);
|
|
}
|
|
}
|
|
}
|
|
|
|
public void pointerEvent(int buttonMask, int x, int y)
|
|
{
|
|
if (x < 0)
|
|
{
|
|
x = 0;
|
|
}
|
|
else if (x >= width)
|
|
{
|
|
x = width - 1;
|
|
}
|
|
|
|
if (y < 0)
|
|
{
|
|
y = 0;
|
|
}
|
|
else if (y >= height)
|
|
{
|
|
y = height - 1;
|
|
}
|
|
|
|
lock (this.writeLock)
|
|
{
|
|
try
|
|
{
|
|
pointerEvent_(buttonMask, x, y);
|
|
this.stream.Flush();
|
|
}
|
|
catch (IOException e)
|
|
{
|
|
Log.Warn(e, e);
|
|
}
|
|
}
|
|
}
|
|
|
|
public void pointerWheelEvent(int x, int y, int r)
|
|
{
|
|
lock (this.writeLock)
|
|
{
|
|
try
|
|
{
|
|
/*
|
|
The RFB protocol specifies a down-up pair for each
|
|
scroll of the wheel, on button 4 for scrolling up, and
|
|
button 5 for scrolling down.
|
|
*/
|
|
|
|
int m;
|
|
|
|
if (r < 0)
|
|
{
|
|
r = -r;
|
|
m = 8;
|
|
}
|
|
else
|
|
{
|
|
m = 16;
|
|
}
|
|
for (int i = 0; i < r; i++)
|
|
{
|
|
pointerEvent_(m, x, y);
|
|
pointerEvent_(0, x, y);
|
|
}
|
|
|
|
this.stream.Flush();
|
|
}
|
|
catch (IOException e)
|
|
{
|
|
Log.Warn(e, e);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
private void pointerEvent_(int buttonMask, int x, int y)
|
|
{
|
|
this.stream.writeInt8(POINTER_EVENT);
|
|
this.stream.writeInt8(buttonMask);
|
|
this.stream.writeInt16(x);
|
|
this.stream.writeInt16(y);
|
|
}
|
|
|
|
|
|
public void clientCutText(String text)
|
|
{
|
|
Log.Debug("cutEvent");
|
|
|
|
lock (this.writeLock)
|
|
{
|
|
try
|
|
{
|
|
this.stream.writeInt8(CLIENT_CUT_TEXT);
|
|
this.stream.writePadding(3);
|
|
this.stream.writeString(text);
|
|
this.stream.Flush();
|
|
}
|
|
catch (IOException e)
|
|
{
|
|
Log.Warn(e, e);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates an image in place in this.data. It expects the pixel data to already be in this.data.
|
|
/// </summary>
|
|
/// <param name="start">the start of image data in this.data</param>
|
|
/// <param name="length">the length of image data in this data</param>
|
|
/// <param name="mask_length">length of cursor mask (after the image in this.data), as specified by
|
|
/// the RFB protocol specification for the Cursor pseudo-encoding (1-bpp, packed). If 0,
|
|
/// the mask is assumed to be totally opaque (as used by normal "raw" packets). Masks are not
|
|
/// supported for 8-bpp images.</param>
|
|
private void createImage(int width, int height, int x, int y, int start, int length, int mask_length, bool cursor)
|
|
{
|
|
if (width == 0 || height == 0)
|
|
return;
|
|
|
|
byte[] data_to_render;
|
|
int stride;
|
|
|
|
if (bitsPerPixel == 32)
|
|
{
|
|
stride = width * 4;
|
|
data_to_render = data;
|
|
|
|
System.Diagnostics.Debug.Assert(length == height * stride);
|
|
|
|
if (cursor)
|
|
{
|
|
// for mask
|
|
int j = 0; // bit within the current byte (k)
|
|
int k = start + length; //byte
|
|
int m = 0; // bit within the current row
|
|
|
|
for (int i = start; i < start + length; i += 4)
|
|
{
|
|
bool mask = (data[k] & (1 << (7 - j))) == 0;
|
|
data[i + 3] = (byte)(mask ? 0 : 0xff);
|
|
|
|
j++;
|
|
m++;
|
|
|
|
if (m == width)
|
|
{
|
|
j = 0;
|
|
m = 0;
|
|
k++;
|
|
}
|
|
else if (j > 7)
|
|
{
|
|
j = 0;
|
|
k++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if (bitsPerPixel == 16)
|
|
{
|
|
// Bitmap requires that stride is a multiple of 4, so we
|
|
// will have to expand the data if width is odd.
|
|
bool expand_data = width % 2 == 1;
|
|
int stride_correction = expand_data ? 2 : 0;
|
|
stride = width * 2 + stride_correction;
|
|
data_to_render = expand_data ? new byte[stride * height] : data;
|
|
|
|
System.Diagnostics.Debug.Assert(length == height * width * 2);
|
|
|
|
if (cursor)
|
|
{
|
|
int p = 0; // Byte within the destination data_to_render.
|
|
// for mask
|
|
int j = 0; // bit within the current byte (k)
|
|
int k = start + length; //byte
|
|
int m = 0; // bit within the current row
|
|
|
|
for (int i = start; i < start + length; i += 2)
|
|
{
|
|
bool mask = (data[k] & (1 << (7 - j))) == 0;
|
|
byte mask_bit = (byte)(mask ? 0 : 0x80);
|
|
|
|
if (rgb565)
|
|
{
|
|
// Convert the 565 data into 1555.
|
|
data_to_render[p] = (byte)((data[i] & 0x1f) | ((data[i] & 0xe0) >> 1));
|
|
data_to_render[p + 1] = (byte)(((data[i + 1] & 0x7) >> 1) | (data[i + 1] & 0x78) | mask_bit);
|
|
}
|
|
else
|
|
{
|
|
// Add the mask bit -- everything else is OK because it's already 555.
|
|
data_to_render[p] = data[i];
|
|
data_to_render[p + 1] = (byte)(data[i + 1] | mask_bit);
|
|
}
|
|
|
|
j++;
|
|
m++;
|
|
p += 2;
|
|
|
|
if (m == width)
|
|
{
|
|
j = 0;
|
|
m = 0;
|
|
k++;
|
|
p += stride_correction;
|
|
}
|
|
else if (j > 7)
|
|
{
|
|
j = 0;
|
|
k++;
|
|
}
|
|
}
|
|
}
|
|
else if (expand_data)
|
|
{
|
|
int w2 = width * 2;
|
|
int i = start; // Byte within the source data.
|
|
int p = 0; // Byte within the destination data_to_render.
|
|
|
|
for (int m = 0; m < height; m++)
|
|
{
|
|
Array.Copy(data, i, data_to_render, p, w2);
|
|
i += w2;
|
|
p += stride;
|
|
}
|
|
}
|
|
}
|
|
else if (bitsPerPixel == 8)
|
|
{
|
|
stride = width * 4;
|
|
data_to_render = data_8bpp;
|
|
|
|
System.Diagnostics.Debug.Assert(length == width * height);
|
|
|
|
// for mask
|
|
int j = 0; // bit within the current byte (k)
|
|
int k = start + length; //byte
|
|
int m = 0; // bit within the current row
|
|
|
|
for (int i = start, n = 0; i < start + length; i++, n += 4)
|
|
{
|
|
data_8bpp[n + 2] = (byte)(((((data[i] >> redShift) & redMax) << 8) + redMaxOver2) / redMaxPlus1);
|
|
data_8bpp[n + 1] = (byte)(((((data[i] >> greenShift) & greenMax) << 8) + greenMaxOver2) / greenMaxPlus1);
|
|
data_8bpp[n] = (byte)(((((data[i] >> blueShift) & blueMax) << 8) + blueMaxOver2) / blueMaxPlus1);
|
|
if (cursor)
|
|
{
|
|
bool mask = (data[k] & (1 << (7 - j))) == 0;
|
|
data_8bpp[n + 3] = (byte)(mask ? 0 : 0xff);
|
|
|
|
j++;
|
|
m++;
|
|
|
|
if (m == width)
|
|
{
|
|
j = 0;
|
|
m = 0;
|
|
k++;
|
|
}
|
|
else if (j > 7)
|
|
{
|
|
j = 0;
|
|
k++;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
data_8bpp[n + 3] = 0;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
throw new Exception("unexpected bits per pixel");
|
|
}
|
|
|
|
BitmapToClient(width, height, x, y, start, stride, cursor, data_to_render);
|
|
}
|
|
|
|
private void BitmapToClient(int width, int height, int x, int y, int start, int stride, bool cursor, byte [] img)
|
|
{
|
|
GCHandle handle = GCHandle.Alloc(img, GCHandleType.Pinned);
|
|
try
|
|
{
|
|
IntPtr pointer = Marshal.UnsafeAddrOfPinnedArrayElement(img, start);
|
|
using (Bitmap bitmap = new Bitmap(width, height, stride, cursor ? pixelFormatCursor : pixelFormat, pointer))
|
|
{
|
|
if (cursor)
|
|
{
|
|
client.ClientSetCursor(bitmap, x, y, width, height);
|
|
}
|
|
else
|
|
{
|
|
client.ClientDrawImage(bitmap, x, y, width, height);
|
|
}
|
|
}
|
|
}
|
|
catch (ArgumentException exn)
|
|
{
|
|
Log.Error(exn, exn);
|
|
}
|
|
finally
|
|
{
|
|
handle.Free();
|
|
}
|
|
}
|
|
|
|
private void readRawEncoding(int x, int y, int width, int height)
|
|
{
|
|
readRawEncoding_(0, x, y, width, height, false);
|
|
}
|
|
|
|
/**
|
|
* @param mask If true, read a mask after the raw data, as used by the
|
|
* Cursor pseudo-encoding.
|
|
* @param start The position in this.data to start using
|
|
*/
|
|
private void readRawEncoding_(int start, int x, int y, int width, int height, bool cursor)
|
|
{
|
|
if (width < 0 || height < 0)
|
|
{
|
|
throw new VNCException("Invalid size: " + width + " x " +
|
|
height);
|
|
}
|
|
|
|
int length = width * height * bytesPerPixel;
|
|
if (data.Length < start + length)
|
|
throw new VNCException("Server error: received rectangle bigger than desktop!");
|
|
this.stream.readFully(this.data, start, length);
|
|
|
|
int mask_length = 0;
|
|
|
|
if (cursor)
|
|
{
|
|
// 1 bit mask.
|
|
int scanline = (width + 7) >> 3;
|
|
mask_length = scanline * height;
|
|
System.Diagnostics.Trace.Assert(this.data.Length >= start + length + mask_length);
|
|
this.stream.readFully(this.data, start + length, mask_length);
|
|
}
|
|
|
|
createImage(width, height, x, y, start, length, mask_length, cursor);
|
|
}
|
|
|
|
|
|
private void readCopyRectangleEncoding(int dx, int dy, int width, int height)
|
|
{
|
|
int x = this.stream.readCard16();
|
|
int y = this.stream.readCard16();
|
|
client.ClientCopyRectangle(x, y, width, height, dx, dy);
|
|
}
|
|
|
|
private Color readColor()
|
|
{
|
|
byte[] color = readColorBytes();
|
|
return Color.FromArgb(color[2], color[1], color[0]);
|
|
}
|
|
|
|
private byte[] readColorBytes(byte[] color, int start)
|
|
{
|
|
uint pixel =
|
|
bitsPerPixel == 32 ?
|
|
(uint)(color[start] |
|
|
color[start + 1] << 8 |
|
|
color[start + 2] << 16 |
|
|
color[start + 3] << 24) :
|
|
bitsPerPixel == 16 ?
|
|
(uint)(color[start] |
|
|
color[start + 1] << 8) :
|
|
(uint)color[start];
|
|
|
|
byte[] newColor = new byte[4];
|
|
|
|
//ARGB Encoding
|
|
newColor[3] = 0xFF;
|
|
newColor[2] = (byte)(((((pixel >> redShift) & redMax) << 8) + redMaxOver2) / redMaxPlus1);
|
|
newColor[1] = (byte)(((((pixel >> greenShift) & greenMax) << 8) + greenMaxOver2) / greenMaxPlus1);
|
|
newColor[0] = (byte)(((((pixel >> blueShift) & blueMax) << 8) + blueMaxOver2) / blueMaxPlus1);
|
|
|
|
return newColor;
|
|
}
|
|
|
|
private byte[] readColorBytes()
|
|
{
|
|
int n = bitsPerPixel >> 3;
|
|
byte[] color = new byte[n];
|
|
|
|
this.stream.readFully(color, 0, n);
|
|
|
|
return readColorBytes(color, 0);
|
|
}
|
|
|
|
private void readRREEncoding(int x, int y, int width, int height)
|
|
{
|
|
int n = this.stream.readCard32();
|
|
Color background = readColor();
|
|
client.ClientFillRectangle(x, y, width, height, background);
|
|
for (int i = 0; i < n; ++i)
|
|
{
|
|
Color foreground = readColor();
|
|
int rx = this.stream.readCard16();
|
|
int ry = this.stream.readCard16();
|
|
int rw = this.stream.readCard16();
|
|
int rh = this.stream.readCard16();
|
|
client.ClientFillRectangle(x + rx, y + ry, rw, rh, foreground);
|
|
}
|
|
}
|
|
|
|
private void readCoRREEncoding(int x, int y, int width, int height)
|
|
{
|
|
int n = this.stream.readCard32();
|
|
Color background = readColor();
|
|
client.ClientFillRectangle(x, y, width, height, background);
|
|
for (int i = 0; i < n; ++i)
|
|
{
|
|
Color foreground = readColor();
|
|
int rx = this.stream.readCard8();
|
|
int ry = this.stream.readCard8();
|
|
int rw = this.stream.readCard8();
|
|
int rh = this.stream.readCard8();
|
|
client.ClientFillRectangle(x + rx, y + ry, rw, rh, foreground);
|
|
}
|
|
}
|
|
|
|
private void readFillRectangles(int rx, int ry, int n)
|
|
{
|
|
int pixelSize = (this.bitsPerPixel + 7) >> 3;
|
|
int length = n * (pixelSize + 2);
|
|
this.stream.readFully(data, 0, length);
|
|
int index = 0;
|
|
for (int i = 0; i < n; ++i)
|
|
{
|
|
Color foreground = readColor();
|
|
int sxy = data[index++] & 0xff;
|
|
int sx = sxy >> 4;
|
|
int sy = sxy & 0xf;
|
|
int swh = data[index++] & 0xff;
|
|
int sw = (swh >> 4) + 1;
|
|
int sh = (swh & 0xf) + 1;
|
|
client.ClientFillRectangle(
|
|
rx + sx, ry + sy, sw, sh, foreground
|
|
);
|
|
}
|
|
}
|
|
|
|
private void readRectangles(int rx, int ry, int n, Color foreground)
|
|
{
|
|
for (int i = 0; i < n; ++i)
|
|
{
|
|
int sxy = this.stream.readCard8();
|
|
int sx = sxy >> 4;
|
|
int sy = sxy & 0xf;
|
|
int swh = this.stream.readCard8();
|
|
int sw = (swh >> 4) + 1;
|
|
int sh = (swh & 0xf) + 1;
|
|
client.ClientFillRectangle(
|
|
rx + sx, ry + sy, sw, sh, foreground
|
|
);
|
|
}
|
|
}
|
|
|
|
private void fillRectBytes(byte[] data, int stride, int x, int y, int width, int height, byte[] color)
|
|
{
|
|
// Fast path thin rectangles
|
|
|
|
int p = (y * stride) + (x * 4);
|
|
int skip;
|
|
|
|
if (width == 1 && height == 1)
|
|
{
|
|
data[p + 0] = color[0];
|
|
data[p + 1] = color[1];
|
|
data[p + 2] = color[2];
|
|
data[p + 3] = color[3];
|
|
}
|
|
else if (width == 1)
|
|
{
|
|
skip = stride - 4;
|
|
|
|
for (int i = 0; i < height; i++)
|
|
{
|
|
data[p + 0] = color[0];
|
|
data[p + 1] = color[1];
|
|
data[p + 2] = color[2];
|
|
data[p + 3] = color[3];
|
|
|
|
p += skip;
|
|
}
|
|
}
|
|
else if (height == 1)
|
|
{
|
|
for (int i = 0; i < width; i++)
|
|
{
|
|
data[p + 0] = color[0];
|
|
data[p + 1] = color[1];
|
|
data[p + 2] = color[2];
|
|
data[p + 3] = color[3];
|
|
|
|
p += 4;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
skip = stride - (width * 4);
|
|
|
|
for (int j = 0; j < height; j++)
|
|
{
|
|
for (int i = 0; i < width; i++)
|
|
{
|
|
data[p + 0] = color[0];
|
|
data[p + 1] = color[1];
|
|
data[p + 2] = color[2];
|
|
data[p + 3] = color[3];
|
|
|
|
p += 4;
|
|
}
|
|
p += skip;
|
|
}
|
|
}
|
|
}
|
|
|
|
private void readHextileEncoding(int x, int y, int width, int height)
|
|
{
|
|
/*
|
|
* Basically, we have two ways of doing this.
|
|
* 1. Draw the hextile to a byte buffer, convert to image
|
|
* and draw to client
|
|
* 2. Draw the individual rectangles of the hex encoding
|
|
* directly to the client
|
|
*
|
|
* I have found its faster to do 1) when size is > 64
|
|
*/
|
|
//GraphicsUtils.startTime();
|
|
if (width * height > 64)
|
|
{
|
|
byte[] background = { 0, 0, 0, 0xFF }; // Black
|
|
byte[] foreground = { 0xFF, 0xFF, 0xFF, 0xFF }; // White
|
|
|
|
byte[] buff = new byte[width * height * 4]; //assume 32 bpp
|
|
int stride = width * 4;
|
|
|
|
for (int sy = 0; sy < height; sy += 16)
|
|
{
|
|
int sheight = Math.Min(16, height - sy);
|
|
|
|
for (int sx = 0; sx < width; sx += 16)
|
|
{
|
|
int swidth = Math.Min(16, width - sx);
|
|
|
|
int mask = this.stream.readCard8();
|
|
|
|
if ((mask & RAW_SUBENCODING) != 0)
|
|
{
|
|
int length = swidth * sheight * 4;
|
|
this.stream.readFully(this.data, 0, length);
|
|
|
|
int index = 0;
|
|
int skip = stride - (swidth * 4);
|
|
int p = (sy * stride) + (sx * 4);
|
|
|
|
for (int i = 0; i < sheight; i++)
|
|
{
|
|
for (int j = 0; j < swidth; j++)
|
|
{
|
|
byte[] color = readColorBytes(this.data, index);
|
|
|
|
index += 4; //assumed 32bpp here
|
|
|
|
buff[p + 3] = color[3];
|
|
buff[p + 2] = color[2];
|
|
buff[p + 1] = color[1];
|
|
buff[p + 0] = color[0];
|
|
|
|
p += 4;
|
|
}
|
|
|
|
p += skip;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ((mask & BACKGROUND_SPECIFIED_SUBENCODING) != 0)
|
|
{
|
|
background = readColorBytes();
|
|
}
|
|
|
|
fillRectBytes(buff, stride, sx, sy, swidth, sheight, background);
|
|
|
|
if ((mask & FOREGROUND_SPECIFIED_SUBENCODING) != 0)
|
|
{
|
|
foreground = readColorBytes();
|
|
}
|
|
|
|
if ((mask & ANY_SUBRECTS_SUBENCODING) != 0)
|
|
{
|
|
int n = this.stream.readCard8();
|
|
if ((mask & SUBRECTS_COLORED_SUBENCODING) != 0)
|
|
{
|
|
int length = n * 6; //assume 32bpp
|
|
this.stream.readFully(data, 0, length);
|
|
int index = 0;
|
|
for (int i = 0; i < n; ++i)
|
|
{
|
|
byte[] color = new byte[4];
|
|
uint pixel = (uint)(data[index + 0] & 0xFF | data[index + 1] << 8
|
|
| data[index + 2] << 16 | data[index + 3] << 24);
|
|
|
|
//ARGB Encoding
|
|
color[3] = 0xFF;
|
|
color[2] = (byte)((pixel >> this.redShift) & this.redMax);
|
|
color[1] = (byte)((pixel >> this.greenShift) & this.greenMax);
|
|
color[0] = (byte)((pixel >> this.blueShift) & this.blueMax);
|
|
|
|
index += 4;
|
|
int txy = data[index++] & 0xff;
|
|
int tx = txy >> 4;
|
|
int ty = txy & 0xf;
|
|
int twh = data[index++] & 0xff;
|
|
int tw = (twh >> 4) + 1;
|
|
int th = (twh & 0xf) + 1;
|
|
|
|
this.fillRectBytes(
|
|
buff, stride, sx + tx, sy + ty, tw, th, color
|
|
);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (int i = 0; i < n; ++i)
|
|
{
|
|
int txy = this.stream.readCard8();
|
|
int tx = txy >> 4;
|
|
int ty = txy & 0xf;
|
|
int twh = this.stream.readCard8();
|
|
int tw = (twh >> 4) + 1;
|
|
int th = (twh & 0xf) + 1;
|
|
|
|
this.fillRectBytes(
|
|
buff, stride, sx + tx, sy + ty, tw, th, foreground
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Now convert to image and write to screen
|
|
GCHandle handle = GCHandle.Alloc(buff, GCHandleType.Pinned);
|
|
try
|
|
{
|
|
IntPtr pointer = Marshal.UnsafeAddrOfPinnedArrayElement(buff, 0);
|
|
using (Bitmap bitmap = new Bitmap(width, height, stride, PixelFormat.Format32bppArgb, pointer))
|
|
{
|
|
client.ClientDrawImage(bitmap, x, y, width, height);
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
handle.Free();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Color foreground = Color.White;
|
|
Color background = Color.Black;
|
|
|
|
int xCount = (width + 15) >> 4;
|
|
int yCount = (height + 15) >> 4;
|
|
for (int yi = 0; yi < yCount; ++yi)
|
|
{
|
|
int ry = y + (yi << 4);
|
|
int rh = (yi == (yCount - 1)) ? height & 0xf : 16;
|
|
if (rh == 0)
|
|
{
|
|
rh = 16;
|
|
}
|
|
for (int xi = 0; xi < xCount; ++xi)
|
|
{
|
|
int rx = x + (xi << 4);
|
|
int rw = (xi == (xCount - 1)) ? width & 0xf : 16;
|
|
if (rw == 0)
|
|
{
|
|
rw = 16;
|
|
}
|
|
int mask = this.stream.readCard8();
|
|
if ((mask & RAW_SUBENCODING) != 0)
|
|
{
|
|
readRawEncoding(rx, ry, rw, rh);
|
|
}
|
|
else
|
|
{
|
|
if ((mask & BACKGROUND_SPECIFIED_SUBENCODING) != 0)
|
|
{
|
|
background = readColor();
|
|
}
|
|
client.ClientFillRectangle(rx, ry, rw, rh, background);
|
|
if ((mask & FOREGROUND_SPECIFIED_SUBENCODING) != 0)
|
|
{
|
|
foreground = readColor();
|
|
}
|
|
if ((mask & ANY_SUBRECTS_SUBENCODING) != 0)
|
|
{
|
|
int n = this.stream.readCard8();
|
|
if ((mask & SUBRECTS_COLORED_SUBENCODING) != 0)
|
|
{
|
|
readFillRectangles(rx, ry, n);
|
|
}
|
|
else
|
|
{
|
|
readRectangles(rx, ry, n, foreground);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/*double time = GraphicsUtils.endTime("hextile");
|
|
int size = width * height;
|
|
StatsEntry entry = new StatsEntry();
|
|
entry.time = time;
|
|
entry.size = size;
|
|
|
|
this.client.stats.Add(entry);*/
|
|
}
|
|
|
|
private void readCursorPseudoEncoding(int x, int y, int width,
|
|
int height)
|
|
{
|
|
readRawEncoding_(0, x, y, width, height, true);
|
|
}
|
|
|
|
private void readFrameBufferUpdate()
|
|
{
|
|
this.stream.readPadding(1);
|
|
int n = this.stream.readCard16();
|
|
Log.Debug("reading " + n + " rectangles");
|
|
bool fb_updated = false;
|
|
long start;
|
|
long end;
|
|
Win32.QueryPerformanceCounter(out start);
|
|
for (int i = 0; i < n; ++i)
|
|
{
|
|
int x = this.stream.readCard16();
|
|
int y = this.stream.readCard16();
|
|
int width = this.stream.readCard16();
|
|
int height = this.stream.readCard16();
|
|
int encoding = this.stream.readCard32();
|
|
Log.Debug("read " + x + " " + y + " " + width + " " +
|
|
height + " " + encoding);
|
|
switch (encoding)
|
|
{
|
|
case RAW_ENCODING:
|
|
readRawEncoding(x, y, width, height);
|
|
break;
|
|
case RRE_ENCODING:
|
|
readRREEncoding(x, y, width, height);
|
|
break;
|
|
case CORRE_ENCODING:
|
|
readCoRREEncoding(x, y, width, height);
|
|
break;
|
|
case COPY_RECTANGLE_ENCODING:
|
|
readCopyRectangleEncoding(x, y, width, height);
|
|
break;
|
|
case HEXTILE_ENCODING:
|
|
readHextileEncoding(x, y, width, height);
|
|
break;
|
|
|
|
case CURSOR_PSEUDO_ENCODING:
|
|
readCursorPseudoEncoding(x, y, width, height);
|
|
break;
|
|
|
|
case DESKTOP_SIZE_PSEUDO_ENCODING:
|
|
desktopSize(width, height);
|
|
// Since the desktop size has changed, we want a full buffer update next time
|
|
incremental = false;
|
|
break;
|
|
|
|
default:
|
|
throw new VNCException("unimplemented encoding: " + encoding);
|
|
}
|
|
|
|
Win32.QueryPerformanceCounter(out end);
|
|
if (end - start > imageUpdateThreshold)
|
|
{
|
|
client.ClientFrameBufferUpdate();
|
|
start = end;
|
|
fb_updated = true;
|
|
}
|
|
else
|
|
{
|
|
fb_updated = false;
|
|
}
|
|
}
|
|
|
|
if (!fb_updated)
|
|
client.ClientFrameBufferUpdate();
|
|
}
|
|
|
|
|
|
private void desktopSize(int width, int height)
|
|
{
|
|
this.width = width;
|
|
this.height = height;
|
|
int neededBytes = width * height * bytesPerPixel;
|
|
if (neededBytes > data.Length)
|
|
{
|
|
data = new byte[neededBytes];
|
|
}
|
|
if (bitsPerPixel == 8 && (data_8bpp == null || neededBytes * 4 > data_8bpp.Length))
|
|
{
|
|
data_8bpp = new byte[neededBytes * 4];
|
|
}
|
|
client.ClientDesktopSize(width, height);
|
|
}
|
|
|
|
private void readServerCutText()
|
|
{
|
|
this.stream.readPadding(3);
|
|
String text = this.stream.readString();
|
|
client.ClientCutText(text);
|
|
}
|
|
|
|
private void readServerMessage()
|
|
{
|
|
Log.Debug("readServerMessage");
|
|
|
|
int type = this.stream.readCard8();
|
|
|
|
switch (type)
|
|
{
|
|
case FRAME_BUFFER_UPDATE:
|
|
Log.Debug("Update");
|
|
//GraphicsUtils.startTime();
|
|
readFrameBufferUpdate();
|
|
//GraphicsUtils.endTime("readFrameBufferUpdate");
|
|
break;
|
|
case BELL:
|
|
Log.Debug("Bell");
|
|
client.ClientBell();
|
|
break;
|
|
case SERVER_CUT_TEXT:
|
|
Log.Debug("Cut text");
|
|
readServerCutText();
|
|
break;
|
|
default:
|
|
throw new VNCException("unknown server message: " + type);
|
|
}
|
|
}
|
|
|
|
public readonly Object updateMonitor = new Object();
|
|
|
|
private void run(object o)
|
|
{
|
|
char[] password = (char[])o;
|
|
|
|
try
|
|
{
|
|
handshake();
|
|
sendProtocolVersion();
|
|
authenticationExchange(password);
|
|
clientInitialization();
|
|
serverInitialization();
|
|
|
|
if (ConnectionSuccess != null)
|
|
ConnectionSuccess(this, null);
|
|
|
|
// Request a full framebuffer update the first time
|
|
incremental = false;
|
|
|
|
while (running)
|
|
{
|
|
lock (this.writeLock)
|
|
{
|
|
writeFramebufferUpdateRequest(0, 0, width, height, incremental);
|
|
this.stream.Flush();
|
|
}
|
|
|
|
incremental = true;
|
|
|
|
readServerMessage();
|
|
|
|
lock (pauseMonitor)
|
|
{
|
|
lock(updateMonitor)
|
|
Monitor.PulseAll(updateMonitor);
|
|
|
|
if (paused)
|
|
Monitor.Wait(pauseMonitor);
|
|
}
|
|
}
|
|
}
|
|
catch (Exception e)
|
|
{
|
|
if (running && this.ErrorOccurred != null)
|
|
ErrorOccurred(this, e);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Nothrow guarantee.
|
|
/// </summary>
|
|
public void Close()
|
|
{
|
|
if (!running)
|
|
return;
|
|
|
|
running = false;
|
|
try
|
|
{
|
|
stream.Close();
|
|
lock (pauseMonitor)
|
|
Monitor.PulseAll(this.pauseMonitor);
|
|
thread.Interrupt();
|
|
}
|
|
catch
|
|
{
|
|
}
|
|
}
|
|
|
|
private bool paused = true;
|
|
|
|
public void Pause()
|
|
{
|
|
paused = true;
|
|
}
|
|
|
|
public void Unpause(bool fullupdate)
|
|
{
|
|
incremental = !fullupdate;
|
|
paused = false;
|
|
lock (this.pauseMonitor)
|
|
Monitor.PulseAll(this.pauseMonitor);
|
|
}
|
|
|
|
public void Unpause()
|
|
{
|
|
Unpause(false);
|
|
}
|
|
}
|
|
}
|