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basic.js
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basic.js
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var net = require('net')
, repl = require('repl').start({ useGlobal: true })
, Canvas = require('canvas')
, x_types = require('./x_types');
var clients = [];
net.createServer(function (socket) {
var sc;
clients.push(sc = new XServerClient(socket));
socket.on('end', function () {
console.log('end');
delete clients[clients.indexOf(sc)];
});
}).listen(6041);
var appjs = require('appjs')
, win = appjs.createWindow({
width: 400
, height: 400
, alpha: false
});
appjs.router.get('/', function (req, res, next) {
res.send('<html><body></body></html>');
});
win.on('create', function () {
win.frame.show().center();
});
win.on('close', function () {
process.exit(0);
});
repl.context.win = win;
var windows = {
0x00000026: new x_types.Window(
0x00000026
, 0x18 // depth 24
, 0x0 // parent 0
, 0, 0
, 400, 400
, 0, 0, 0, 0, 0
)
}
var atoms = [];
repl.context.clients = clients;
repl.context.windows = windows;
//FIXME: Atoms not stored correctly
repl.context.atoms = atoms;
function XServerClient (socket) {
this.socket = socket;
this.state = 0;
this.endian = null;
this.release = 11300000;
this.resource_id_mask = 0x001fffff;
this.resource_id_base = 0x00200000;
this.vendor = 'JavaScript X';
this.motion_buffer_size = 0xff;
this.maximum_request_length = 0xffff;
this.sequence = 1;
this.formats = [
new x_types.Format(0x01, 0x01, 0x20)
, new x_types.Format(0x04, 0x08, 0x20)
, new x_types.Format(0x08, 0x08, 0x20)
, new x_types.Format(0x0f, 0x10, 0x20)
, new x_types.Format(0x10, 0x10, 0x20)
, new x_types.Format(0x18, 0x20, 0x20)
, new x_types.Format(0x20, 0x20, 0x20)
];
this.resources = windows;
this.screens = [
new x_types.Screen(
0x00000026 // root
, 0x00000022 // def colormap
, 0x00ffffff // white
, 0x00000000 // black
, 0x00000000 // current input masks
, 400 // width px
, 400 // height px
, 400 // width mm
, 400 // height mm
, 0x0001 // min maps
, 0x0001 // max maps
, 0x20 // root visual
, 0 // backing stores
, 0 // save unders
, 0x18 //24 default depth
, [ // depths
new x_types.Depth(
0x01 // depth 1
)
, new x_types.Depth(
0x18 // depth 24
, [ // visualtypes
new x_types.VisualType(
0x00000020 // id
, 0x04 // class
, 0x08 // bits per rgb
, 0x0100 // colormap entries
, 0x00ff0000 // red mask
, 0x0000ff00 // green mask
, 0x000000ff // blue mask
)
, new x_types.VisualType(
0x00000021 // id
, 0x05 // class
, 0x08 // bits per rgb
, 0x0100 // colormap entries
, 0x00ff0000 // red mask
, 0x0000ff00 // green mask
, 0x000000ff // blue mask
)
]
)
]
)
];
socket.on('data', this.processData.bind(this));
}
XServerClient.prototype.processData = function (data) {
data.endian = this.endian;
switch (this.state) {
case 0:
return this.setup(data);
case 1:
var req = { length: 0 }
, res = new Buffer(data.length * 1000)
, offset = 0;
res.endian = this.endian;
res.fill(0);
while (data.length > 0) {
var req = new x_types.Request(data, this.sequence ++);
console.log('NEW REQ', req.opcode);
var func = this[XServerClient.opcodes[req.opcode]];
offset = (func && func.call(this, req, res, offset)) || offset;
if (data.length > 0) {
data = data.slice(req.length);
data.endian = this.endian;
}
}
if (offset)
this.socket.write(res.slice(0, offset));
}
}
XServerClient.prototype.setup = function (data) {
data.endian = this.endian = data[0] !== 'B' ? 'LE' : 'BE';
this.protocol_major = data.readUInt16(2);
this.protocol_minor = data.readUInt16(4);
this.auth_name = data.toString(
'ascii'
, 12
, 12 + data.readUInt16(6)
);
this.auth_data = data.toString(
'ascii'
, 12 + data.readUInt16(6) + 2
, 12 + data.readUInt16(6) + 2 + data.readUInt16(8)
);
/* Deny connection
var reason = 'No Way'
, pad = 4 - ((reason.length % 4) || 4);
var res = new Buffer(8 + reason.length + pad);
res.fill(0);
res.writeUInt8(reason.length, 1); // 2 (0: 0, 1: reason.length)
this.writeUInt16(res, this.protocol_major, 2); // 2
this.writeUInt16(res, this.protocol_minor, 4); // 2
this.writeUInt16(res, (reason.length + pad) / 4, 6);
res.write(reason, 8, reason.length, 'ascii');
this.socket.write(res);
*/
// Allow connection
var res = new Buffer(500);
res.endian = this.endian;
res.fill(0);
res.writeUInt8(1, 0);
res.writeUInt16(this.protocol_major, 2);
res.writeUInt16(this.protocol_minor, 4);
res.writeUInt16((32 + (this.formats.byteLength()) + stringPad(this.vendor) + this.screens.byteLength()) / 4, 6);
res.writeUInt32(this.release, 8);
res.writeUInt32(this.resource_id_base, 12);
res.writeUInt32(this.resource_id_mask, 16);
res.writeUInt32(this.motion_buffer_size, 20);
res.writeUInt16(this.vendor.length, 24);
res.writeUInt16(this.maximum_request_length, 26);
res.writeUInt8(this.screens.length, 28); // Number screens
res.writeUInt8(this.formats.length, 29); // Number formats
res.writeUInt8(0, 30); // image lsb first
res.writeUInt8(0, 31); // pixmap lsb first
res.writeUInt8(32, 32); // pixmap scanline unit
res.writeUInt8(32, 33); // pixmap scanline pad
res.writeUInt8(8, 34); // min keycode
res.writeUInt8(255, 35); // max keycode
// 4 unused
res.write(this.vendor, 40, this.vendor.length, 'ascii');
var base = 40 + stringPad(this.vendor);
base = this.formats.writeBuffer(res, base);
base = this.screens.writeBuffer(res, base);
var _res = new Buffer(base);
_res.fill(0);
res.copy(_res, 0, 0, base);
this.socket.write(_res);
console.log('Finished setup');
this.state = 1;
}
XServerClient.opcodes = {
1: 'CreateWindow'
, 16: 'InternAtom'
, 18: 'ChangeProperty'
, 20: 'GetProperty'
, 43: 'GetInputFocus'
, 53: 'CreatePixmap'
, 54: 'FreePixmap'
, 55: 'CreateGC'
, 72: 'PutImage'
, 98: 'QueryExtension'
}
XServerClient.prototype.CreateWindow = function (req, res, offset) {
var depth = req.data_byte
, id = req.data.readUInt32(0)
, parent = req.data.readUInt32(4)
, x = req.data.readUInt16(8)
, y = req.data.readUInt16(10)
, width = req.data.readUInt16(12)
, height = req.data.readUInt16(14)
, border_width = req.data.readUInt16(16)
, _class = req.data.readUInt16(18)
, visual = req.data.readUInt32(20)
, vmask = req.data.readUInt32(24)
, vdata = req.data.slice(28);
vdata.endian = this.endian;
this.resources[id] = new x_types.Window(id, depth, parent, x, y, width, height, border_width, _class, visual, vmask, vdata);
console.log('CreateWindow', id);
return offset;
}
XServerClient.prototype.InternAtom = function (req, res, offset) {
var only_if_exists = req.data_byte
, length = req.data.readUInt16(0)
, name = req.data.toString('ascii', 2, 2 + length)
, index = atoms.indexOf(name) + 1;
if ((!index) && ! only_if_exists)
index = atoms.push(name);
var _res = new x_types.Reply(req)
_res.data.writeUInt32(index, 0);
console.log('InternAtom')
return _res.writeBuffer(res, offset)
}
XServerClient.prototype.ChangeProperty = function (req, res, offset) {
var mode = req.data_byte
, window = this.resources[req.data.readUInt32(0)]
, property = req.data.readUInt32(4)
, type = req.data.readUInt32(8)
, format = req.data.readUInt8(12)
, length = req.data.readUInt32(16) * (format === 8 ? 1 : (format === 16 ? 2 : (format === 32) ? 4 : 0))
, data = req.data.slice(20, length + 20);
data.endian = this.endian;
window.changeProperty(property, format, data, mode);
console.log('ChangeProperty', window.id, property, format, data, mode);
return offset;
}
XServerClient.prototype.GetProperty = function (req, res, offset) {
var window = req.data.readUInt32(0)
, property = req.data.readUInt32(4)
, type = req.data.readUInt32(8)
, long_off = req.data.readUInt32(12)
, long_len = req.data.readUInt32(16);
console.log('Get Property', window, property);
var _res = new x_types.Reply(req)
return _res.writeBuffer(res, offset);
}
XServerClient.prototype.GetInputFocus = function (req, res, offset) {
// TODO: STUB Returning one value, check functionality and FIXME
console.log('GetInputFocus');
var _res = new x_types.Reply(req);
_res.data_byte = 1;
_res.data.writeUInt32(1, 0);
return _res.writeBuffer(res, offset);
}
XServerClient.prototype.CreatePixmap = function (req, res, offset) {
var depth = req.data_byte
, pid = req.data.readUInt32(0)
, drawable = req.data.readUInt32(4)
, width = req.data.readUInt16(8)
, height = req.data.readUInt16(10);
if (this.resources[pid])
console.log('TODO: Throw error?');
if (!(drawable = this.resources[drawable]))
console.log('TODO: Throw error! (No drawable)');
console.log('CreatePixmap', pid);
console.log(drawable.depth, depth);
if (drawable.depth !== depth && depth !== 1) {
var _res = new x_types.Error(req, 4, depth);
console.log('Depth Error');
return _res.writeBuffer(res, offset);
}
this.resources[pid] = new x_types.Pixmap(pid, depth, drawable, width, height);
console.log(pid in this.resources, pid in windows);
return offset;
}
XServerClient.prototype.FreePixmap = function (req, res, offset) {
var pid = req.data.readUInt32(0);
console.log('FreePixmap', pid);
if (! (this.resources[pid] instanceof x_types.Pixmap)) {
var _res = new x_types.Error(req, 2, pid);
console.log('Error');
return _res.writeBuffer(res, offset);
}
delete this.resources[pid];
return offset;
}
XServerClient.prototype.CreateGC = function (req, res, offset) {
var cid = req.data.readUInt32(0)
, drawable = req.data.readUInt32(4)
, vmask = req.data.readUInt32(8)
, vdata = req.data.slice(12);
vdata.endian = this.endian;
if (this.resources[cid])
console.log('TODO: Throw error?');
if (! this.resources[drawable])
console.log('TODO: Throw error?', cid, drawable);
console.log('CreateGC', cid, drawable);
this.resources[cid] = new x_types.GraphicsContext(cid, this.resources[drawable], vmask, vdata);
return offset;
}
XServerClient.prototype.PutImage = function (req, res, offset) {
var type = req.data_byte
, drawable = this.resources[req.data.readUInt32(0)]
, context = this.resources[req.data.readUInt32(4)]
, width = req.data.readUInt16(8)
, height = req.data.readUInt16(10)
, x = req.data.readUInt16(12)
, y = req.data.readUInt16(14)
, pad = req.data.readUInt8(16)
, depth = req.data.readUInt8(17)
, data = req.data.slice(20);
data.endian = this.endian;
context.putImage(data, width, height, x, y);
console.log('PutImage', req.data.readUInt32(0), req.data.readUInt32(4));
return offset;
}
XServerClient.prototype.QueryExtension = function (req, res, offset) {
console.log('QueryExtension');
var _res = new x_types.Reply(req);
_res.data.writeUInt8(0, 0);
_res.data.writeUInt8(req.opcode, 1);
_res.data.writeUInt8(0, 2);
_res.data.writeUInt8(0, 3);
console.log('QueryExtension');
return _res.writeBuffer(res, offset);
}
function stringPad (string) {
return string.length + (4 - ((string.length % 4) || 4));
}