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Code Issues Releases Wiki Activity

1. Added proxy-helper to assist with exception checking

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2. Added win-virtual-terminal, to support MSFT's new ConPTY API.
This commit is contained in:
Bryan Roe
2019-11-26 10:21:53 -08:00
parent 1c64223b1b
commit 975c4c6029
2 changed files with 242 additions and 0 deletions
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128
modules/win-virtual-terminal.js Normal file
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/*
Copyright 2019 Intel Corporation
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
const PROC_THREAD_ATTRIBUTE_PSEUDOCONSOLE = 0x00020016;
const EXTENDED_STARTUPINFO_PRESENT = 0x00080000;
const HEAP_ZERO_MEMORY = 0x00000008;
var duplex = require('stream').Duplex;
function vt()
{
this._ObjectID = 'win-virtual-terminal';
this._GM = require('_GenericMarshal');
this._kernel32 = this._GM.CreateNativeProxy('kernel32.dll');
try
{
this._kernel32.CreateMethod('CreatePipe');
this._kernel32.CreateMethod('CreateProcessW');
this._kernel32.CreateMethod('CreatePseudoConsole');
this._kernel32.CreateMethod('GetProcessHeap');
this._kernel32.CreateMethod('HeapAlloc');
this._kernel32.CreateMethod('InitializeProcThreadAttributeList');
this._kernel32.CreateMethod('UpdateProcThreadAttribute');
this._kernel32.CreateMethod('WriteFile');
this._kernel32.CreateMethod('ReadFile');
}
catch (e)
{
}
Object.defineProperty(this, 'supported', { value: this._kernel32.CreatePseudoConsole != null });
this.Create = function Create(path, width, height)
{
if (!this.supported) { throw ('This build of Windows does not have support for PseudoConsoles'); }
if (!width) { width = 80; }
if (!height) { height = 25; }
var ret = { _h: this._GM.CreatePointer(), _consoleInput: this._GM.CreatePointer(), _consoleOutput: this._GM.CreatePointer(), _input: this._GM.CreatePointer(), _output: this._GM.CreatePointer(), vt: this };
var attrSize = this._GM.CreateVariable(8);
var attrList;
var pi = this._GM.CreateVariable(this._GM.PointerSize == 4 ? 16 : 24);
// Create the necessary pipes
if (this._kernel32.CreatePipe(ret._consoleInput, ret._input, 0, 0).Val == 0) { console.log('PIPE/FAIL'); }
if (this._kernel32.CreatePipe(ret._output, ret._consoleOutput, 0, 0).Val == 0) { console.log('PIPE/FAIL'); }
if (this._kernel32.CreatePseudoConsole((height << 16) | width, ret._consoleInput.Deref(), ret._consoleOutput.Deref(), 0, ret._h).Val != 0)
{
console.log('CreatePseudoConsole Error');
throw ('Error calling CreatePseudoConsole()');
}
this._kernel32.InitializeProcThreadAttributeList(0, 1, 0, attrSize);
attrList = this._GM.CreateVariable(attrSize.toBuffer().readUInt32LE());
var startupinfoex = this._GM.CreateVariable(this._GM.PointerSize == 8 ? 112 : 72);
startupinfoex.toBuffer().writeUInt32LE(this._GM.PointerSize == 8 ? 112 : 72, 0);
attrList.pointerBuffer().copy(startupinfoex.Deref(this._GM.PointerSize == 8 ? 104 : 68, this._GM.PointerSize).toBuffer());
if(this._kernel32.InitializeProcThreadAttributeList(attrList, 1, 0, attrSize).Val != 0)
{
if (this._kernel32.UpdateProcThreadAttribute(attrList, 0, PROC_THREAD_ATTRIBUTE_PSEUDOCONSOLE, ret._h.Deref(), this._GM.PointerSize, 0, 0).Val != 0)
{
if(this._kernel32.CreateProcessW(0, this._GM.CreateVariable(path, { wide: true }), 0, 0, 1, EXTENDED_STARTUPINFO_PRESENT, 0, 0, startupinfoex, pi).Val != 0)
{
ret._startupinfoex = startupinfoex;
ret._pid = pi.Deref(this._GM.PointerSize == 4 ? 8 : 16, 4).toBuffer().readUInt32LE();
var ds = new duplex(
{
'write': function (chunk, flush)
{
var written = this.terminal.vt._GM.CreateVariable(4);
this.terminal.vt._kernel32.WriteFile(this.terminal._input.Deref(), this.terminal.vt._GM.CreateVariable(chunk), chunk.length, written, 0);
flush();
return (true);
},
'final': function (flush)
{
flush();
}
});
ds.terminal = ret;
ds._kernel32 = this._kernel32;
ds._rpbuf = this._GM.CreateVariable(4096);
ds._rpbufRead = this._GM.CreateVariable(4);
ds._read = function _read()
{
this._rp = this._kernel32.ReadFile.async(this.terminal._output.Deref(), this._rpbuf, this._rpbuf._size, this._rpbufRead, 0);
this._rp.then(function ()
{
var len = this.parent._rpbufRead.toBuffer().readUInt32LE();
this.parent.push(this.parent._rpbuf.toBuffer().slice(0, len));
this.parent._read();
});
this._rp.parent = this;
};
ds._read();
return (ds);
}
else
{
console.log('FAILED!');
}
}
}
throw ('Internal Error');
}
}
if (process.platform == 'win32')
{
module.exports = new vt();
}