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Add dynamic resizing support to xterm.js terminal

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This commit is contained in:
TotallyNotElite 2020-01-25 12:08:01 +01:00
parent 785cbd8f3a
commit 69846d5982
2 changed files with 24 additions and 18 deletions
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23
agents/meshcore.js
View File

@ -39,8 +39,7 @@ var MESHRIGHT_LIMITEDINPUT = 4096;
function createMeshCore(agent) {
var obj = {};
if (process.platform == 'win32' && require('user-sessions').isRoot())
{
if (process.platform == 'win32' && require('user-sessions').isRoot()) {
// Check the Agent Uninstall MetaData for correctness, as the installer may have written an incorrect value
try {
var writtenSize = 0, actualSize = Math.floor(require('fs').statSync(process.execPath).size / 1024);
@ -1213,9 +1212,10 @@ function createMeshCore(agent) {
}
}
} catch (ex) { }
var python = fs.existsSync('/usr/bin/python') ? '/usr/bin/python' : false;
var shell = bash || sh;
var pty = python || script;
var env = { HISTCONTROL: 'ignoreboth', TERM: 'xterm' };
if (this.httprequest.xoptions) {
if (this.httprequest.xoptions.rows) { env.LINES = ('' + this.httprequest.xoptions.rows); }
@ -1224,7 +1224,8 @@ function createMeshCore(agent) {
var options = { uid: (this.httprequest.protocol == 8) ? require('user-sessions').consoleUid() : null, env: env };
var setupcommands = ' alias ls=\'ls --color=auto\'\n';
if (shell == sh) setupcommands += ' stty erase ^H\n';
setupcommands += ' clear\n';
// Dynamic resizing is only supported in PTYs
if (pty) setupcommands += ' mcresize() { old=$(stty -g);stty raw -echo min 0 time 5;printf \'\\0337\\033[r\\033[999;999H\\033[6n\\0338\' > /dev/tty;IFS=\'[;R\' read -r _ rows cols _ < /dev/tty;stty "$old";stty cols "$cols" rows "$rows"; };trap mcresize SIGWINCH;\n'
if (script && shell && process.platform == 'linux') {
this.httprequest.process = childProcess.execFile(script, ['script', '--return', '--quiet', '-c', '"' + shell + '"', '/dev/null'], options); // Start as active user
@ -1250,8 +1251,10 @@ function createMeshCore(agent) {
this.end();
return;
}
this.httprequest.process.pty = pty;
this.httprequest.process.tunnel = this;
this.httprequest.process.on('exit', function (ecode, sig) { this.tunnel.end(); });
this.httprequest.process.stdin.write(" clear\n");
this.httprequest.process.stderr.on('data', function (chunk) { this.parent.tunnel.write(chunk); });
this.httprequest.process.stdout.pipe(this, { dataTypeSkip: 1 }); // 0 = Binary, 1 = Text.
this.pipe(this.httprequest.process.stdin, { dataTypeSkip: 1, end: false }); // 0 = Binary, 1 = Text.
@ -1783,16 +1786,17 @@ function createMeshCore(agent) {
break;
}
case 'termsize': {
if (ws.httprequest.protocol == 1) { // Terminal
// Indicates a change in terminal size
if (process.platform == 'win32') {
if (ws.httprequest._term == null) return;
//sendConsoleText('Win32-TermSize: ' + obj.cols + 'x' + obj.rows);
// TODO
} else {
if (ws.httprequest.process == null) return;
//sendConsoleText('Linux-TermSize: ' + obj.cols + 'x' + obj.rows);
// TODO
if (ws.httprequest.process == null || !ws.httprequest.process.pty) return;
// ILibDuktape_ChildProcess kill doesn't support sending signals
if (fs.existsSync("/bin/kill")) {
// We need to send signal to the child of the process, since the child is the shell
childProcess.execFile('/bin/bash', ['bash', "-c", "kill -SIGWINCH $(pgrep -P " + ws.httprequest.process.pid + ")"]);
}
}
break;
@ -2226,8 +2230,7 @@ function createMeshCore(agent) {
break;
}
case 'ps': {
processManager.getProcesses(function (plist)
{
processManager.getProcesses(function (plist) {
var x = '';
for (var i in plist) { x += i + ((plist[i].user) ? (', ' + plist[i].user) : '') + ', ' + plist[i].cmd + '\r\n'; }
sendConsoleText(x, sessionid);

7
views/xterm.handlebars
View File

@ -91,7 +91,6 @@
// When the user resizes the window, re-fit
window.onresize = function () {
if (termfit != null) { termfit.fit(); }
if (resizeTimer == null) { resizeTimer = setTimeout(sendResize, 200); }
}
// Update the terminal status and buttons
@ -143,8 +142,12 @@
if (termfit) { term.loadAddon(termfit); }
term.open(Q('terminal'));
term.onData(function (data) { if (tunnel != null) { tunnel.sendText(data); } })
term.onResize(function (size) { if (resizeTimer == null) { resizeTimer = setTimeout(sendResize, 200); } });
if (termfit) { termfit.fit(); }
term.onResize(function (size) {
// Despam resize
if (resizeTimer) clearTimeout(resizeTimer);
resizeTimer = setTimeout(sendResize, 200);
});
// Setup a terminal tunnel to the agent
tunnel = CreateAgentRedirect(meshserver, CreateRemoteTunnel(tunnelUpdate), serverPublicNamePort, authCookie, authRelayCookie, domainUrl);