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Added Web-RDP mouse cursor support.

This commit is contained in:
Ylian Saint-Hilaire 2022-06-23 22:10:07 -07:00
parent 339e3efbef
commit 6dbae08c40
6 changed files with 109 additions and 17 deletions
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12
apprelays.js
View File

@ -202,10 +202,16 @@ module.exports.CreateMstscRelay = function (parent, db, ws, req, args, domain) {
delete bitmap.data;
send(['rdp-bitmap', bitmap]); // Send the bitmap metadata seperately, without bitmap data.
}).on('clipboard', function (content) {
// Clipboard data changed
send(['rdp-clipboard', content]);
send(['rdp-clipboard', content]); // The clipboard data has changed
}).on('pointer', function (cursorId, cursorStr) {
if (cursorStr == null) { cursorStr = 'default'; }
if (obj.lastCursorStrSent != cursorStr) {
obj.lastCursorStrSent = cursorStr;
//console.log('pointer', cursorStr);
send(['rdp-pointer', cursorStr]); // The mouse pointer has changed
}
}).on('close', function () {
send(['rdp-close']);
send(['rdp-close']); // This RDP session has closed
}).on('error', function (err) {
if (typeof err == 'string') { send(['rdp-error', err]); }
if ((typeof err == 'object') && (err.err) && (err.code)) { send(['rdp-error', err.err, err.code]); }

10
public/scripts/agent-rdp-0.0.1.js
View File

@ -18,6 +18,10 @@ var CreateRDPDesktop = function (canvasid) {
obj.m.onClipboardChanged = null;
obj.onConsoleMessageChange = null;
var xMouseCursorActive = true;
var xMouseCursorCurrent = 'default';
obj.mouseCursorActive = function (x) { if (xMouseCursorActive == x) return; xMouseCursorActive = x; obj.CanvasId.style.cursor = ((x == true) ? xMouseCursorCurrent : 'default'); }
function mouseButtonMap(button) {
// Swap mouse buttons if needed
if (obj.m.SwapMouse === true) return [2, 0, 1, 0, 0][button];
@ -75,6 +79,12 @@ var CreateRDPDesktop = function (canvasid) {
obj.render.update(bitmap);
break;
}
case 'rdp-pointer': {
var pointer = msg[1];
xMouseCursorCurrent = pointer;
if (xMouseCursorActive) { obj.CanvasId.style.cursor = pointer; }
break;
}
case 'rdp-close': {
obj.Stop();
break;

2
rdp/core/layer.js
View File

@ -22,7 +22,7 @@ var fs = require('fs');
var type = require('./type');
var log = require('./log');
var tls = require('tls');
var crypto = require('crypto');
//var crypto = require('crypto');
var events = require('events');
/**

75
rdp/protocol/pdu/data.js
View File

@ -186,7 +186,7 @@ var FastPathUpdateType = {
FASTPATH_UPDATETYPE_PTR_NULL : 0x5,
FASTPATH_UPDATETYPE_PTR_DEFAULT : 0x6,
FASTPATH_UPDATETYPE_PTR_POSITION : 0x8,
FASTPATH_UPDATETYPE_COLOR : 0x9,
FASTPATH_UPDATETYPE_COLOR : 0x9, // Mouse cursor
FASTPATH_UPDATETYPE_CACHED : 0xA,
FASTPATH_UPDATETYPE_POINTER : 0xB
};
@ -1093,6 +1093,60 @@ function fastPathBitmapUpdateDataPDU (opt) {
return new type.Component(self, opt);
}
// This is a table of cursorid to cursor name.
// Created by movering the mouse over this page: https://www.w3schools.com/csSref/tryit.asp?filename=trycss_cursor
const cursorIdTable = {
// Normal style mouse cursor
903013897: 'alias',
370524792: 'all-scroll',
853046751: 'cell',
2101250798: 'col-resize',
703681364: 'copy',
992638936: 'crosshair',
1539083673: 'ew-resize',
1919796298: 'grab',
1010243511: 'grabbing',
1247283057: 'help',
1390892051: 'none',
885751489: 'not-allowed',
1732952247: 'row-resize',
747144997: 'url',
2018345610: 'zoom-in',
347367048: 'zoom-out',
1872942890: 'default',
1737852989: 'text',
1932827019: 'ns-resize',
1884471290: 'nesw-resize',
1204065391: 'nwse-resize',
2030531519: 'progress',
1050842114: 'pointer',
// Black style cursors
1258195498: 'default',
219484254: 'all-scroll',
399295089: 'text',
1912613597: 'wait',
864127801: 'ew-resize',
23245044: 'nesw-resize',
1966995494: 'not-allowed',
1873216615: 'help',
255126408: 'nesw-resize',
157191894: 'ns-resize',
1768446509: 'pointer',
1032011501: 'crosshair'
}
function fastPathPointerUpdateDataPDU(opt, cursorId, cursorStr) {
var self = {
__FASTPATH_UPDATE_TYPE__: FastPathUpdateType.FASTPATH_UPDATETYPE_COLOR,
header: new type.UInt16Le(FastPathUpdateType.FASTPATH_UPDATETYPE_COLOR, { constant: true }),
cursorId: cursorId,
cursorStr: cursorStr
};
return new type.Component(self, opt);
}
/**
* @see http://msdn.microsoft.com/en-us/library/cc240622.aspx
* @param updateData {type.Component}
@ -1116,13 +1170,28 @@ function fastPathUpdatePDU (updateData, opt) {
}) };
switch (self.updateHeader.value & 0xf) {
case FastPathUpdateType.FASTPATH_UPDATETYPE_BITMAP:
case FastPathUpdateType.FASTPATH_UPDATETYPE_BITMAP: {
self.updateData = fastPathBitmapUpdateDataPDU(options).read(s);
break;
default:
}
case FastPathUpdateType.FASTPATH_UPDATETYPE_COLOR: {
var data = new type.BinaryString(null, options).read(s);
// Hash the data to get a cursor id.
// This is a hack since the cursor bitmap is sent but we can't use that, we has hash the bitmap and use that as a hint as to what cursor we need to display
const hasher = require('crypto').createHash('sha384');
hasher.update(data.value);
const cursorid = Math.abs(hasher.digest().readInt32BE(0));
const cursorStr = cursorIdTable[cursorid];
//if (cursorStr == null) { console.log('Unknown cursorId: ' + cursorid); }
self.updateData = fastPathPointerUpdateDataPDU(options, cursorid, cursorStr);
break;
}
default: {
self.updateData = new type.BinaryString(null, options).read(s);
log.debug('unknown fast path pdu type ' + (self.updateHeader.value & 0xf));
}
}
})
};

7
rdp/protocol/pdu/global.js
View File

@ -270,9 +270,14 @@ Client.prototype.recvFastPath = function (secFlag, s) {
while (s.availableLength() > 0) {
var pdu = data.fastPathUpdatePDU().read(s);
switch (pdu.obj.updateHeader.value & 0xf) {
case data.FastPathUpdateType.FASTPATH_UPDATETYPE_BITMAP:
case data.FastPathUpdateType.FASTPATH_UPDATETYPE_BITMAP: {
this.emit('bitmap', pdu.obj.updateData.obj.rectangles.obj);
break;
}
case data.FastPathUpdateType.FASTPATH_UPDATETYPE_COLOR: {
this.emit('pointer', pdu.obj.updateData.obj.cursorId, pdu.obj.updateData.obj.cursorStr);
break;
}
default:
}
}

2
rdp/protocol/rdp.js
View File

@ -160,6 +160,8 @@ function RdpClient(config) {
}).on('close', function () {
self.connected = false;
self.emit('close');
}).on('pointer', function (cursorId, cursorStr) {
self.emit('pointer', cursorId, cursorStr);
}).on('bitmap', function (bitmaps) {
for (var bitmap in bitmaps) {
var bitmapData = bitmaps[bitmap].obj.bitmapDataStream.value;