Ylianst/MeshCentral
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Added server process cleanup.

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This commit is contained in:
Ylian Saint-Hilaire 2019-07-17 15:57:42 -07:00
parent 7fec856c9d
commit 03e57916a8
5 changed files with 43 additions and 17 deletions
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4
meshaccelerator.js
View File

@ -17,6 +17,10 @@
const crypto = require('crypto');
var certStore = null;
// When the parent process terminates, we exit also.
process.on('disconnect', function () { process.exit(); });
// Handle parent messages
process.on('message', function (message) {
switch (message.action) {
case 'sign': {

48
meshcentral.js
View File

@ -165,7 +165,7 @@ function CreateMeshCentralServer(config, args) {
}
// If "--launch" is in the arguments, launch now
if (obj.args.launch == 1) {
if (obj.args.launch) {
obj.StartEx();
} else {
// if "--launch" is not specified, launch the server as a child process.
@ -183,20 +183,23 @@ function CreateMeshCentralServer(config, args) {
// Launch MeshCentral as a child server and monitor it.
obj.launchChildServer = function (startLine) {
if (process.pid) { obj.updateServerState('monitor-pid', process.pid); }
if (process.ppid) { obj.updateServerState('monitor-ppid', process.ppid); }
var child_process = require('child_process');
var xprocess = child_process.exec(startLine + ' --launch', { maxBuffer: Infinity, cwd: obj.parentpath }, function (error, stdout, stderr) {
if (xprocess.xrestart == 1) {
childProcess = child_process.exec(startLine + ' --launch ' + process.pid, { maxBuffer: Infinity, cwd: obj.parentpath }, function (error, stdout, stderr) {
if (childProcess.xrestart == 1) {
setTimeout(function () { obj.launchChildServer(startLine); }, 500); // This is an expected restart.
} else if (xprocess.xrestart == 2) {
} else if (childProcess.xrestart == 2) {
console.log('Expected exit...');
process.exit(); // User CTRL-C exit.
} else if (xprocess.xrestart == 3) {
} else if (childProcess.xrestart == 3) {
// Server self-update exit
var version = '';
if (typeof obj.args.selfupdate == 'string') { version = '@' + obj.args.selfupdate; }
var child_process = require('child_process');
var npmpath = ((typeof obj.args.npmpath == 'string') ? obj.args.npmpath : 'npm');
var xxprocess = child_process.exec(npmpath + ' install meshcentral' + version, { maxBuffer: Infinity, cwd: obj.parentpath }, function (error, stdout, stderr) { });
var npmproxy = ((typeof obj.args.npmproxy == 'string') ? (' --proxy ' + obj.args.npmproxy) : '');
var xxprocess = child_process.exec(npmpath + npmproxy + ' install meshcentral' + version, { maxBuffer: Infinity, cwd: obj.parentpath }, function (error, stdout, stderr) { });
xxprocess.data = '';
xxprocess.stdout.on('data', function (data) { xxprocess.data += data; });
xxprocess.stderr.on('data', function (data) { xxprocess.data += data; });
@ -229,8 +232,8 @@ function CreateMeshCentralServer(config, args) {
}
}
});
xprocess.stdout.on('data', function (data) { if (data[data.length - 1] == '\n') { data = data.substring(0, data.length - 1); } if (data.indexOf('Updating settings folder...') >= 0) { xprocess.xrestart = 1; } else if (data.indexOf('Updating server certificates...') >= 0) { xprocess.xrestart = 1; } else if (data.indexOf('Server Ctrl-C exit...') >= 0) { xprocess.xrestart = 2; } else if (data.indexOf('Starting self upgrade...') >= 0) { xprocess.xrestart = 3; } else if (data.indexOf('Server restart...') >= 0) { xprocess.xrestart = 1; } console.log(data); });
xprocess.stderr.on('data', function (data) {
childProcess.stdout.on('data', function (data) { if (data[data.length - 1] == '\n') { data = data.substring(0, data.length - 1); } if (data.indexOf('Updating settings folder...') >= 0) { childProcess.xrestart = 1; } else if (data.indexOf('Updating server certificates...') >= 0) { childProcess.xrestart = 1; } else if (data.indexOf('Server Ctrl-C exit...') >= 0) { childProcess.xrestart = 2; } else if (data.indexOf('Starting self upgrade...') >= 0) { childProcess.xrestart = 3; } else if (data.indexOf('Server restart...') >= 0) { childProcess.xrestart = 1; } console.log(data); });
childProcess.stderr.on('data', function (data) {
if (data.startsWith('le.challenges[tls-sni-01].loopback')) { return; } // Ignore this error output from GreenLock
if (data[data.length - 1] == '\n') { data = data.substring(0, data.length - 1); }
try {
@ -239,7 +242,7 @@ function CreateMeshCentralServer(config, args) {
obj.fs.appendFileSync(obj.getConfigFilePath('mesherrors.txt'), '-------- ' + new Date().toLocaleString() + ' ---- ' + obj.currentVer + ' --------\r\n\r\n' + data + '\r\n\r\n\r\n');
} catch (ex) { console.log('ERROR: Unable to write to mesherrors.txt.'); }
});
xprocess.on('close', function (code) { if ((code != 0) && (code != 123)) { /* console.log("Exited with code " + code); */ } });
childProcess.on('close', function (code) { if ((code != 0) && (code != 123)) { /* console.log("Exited with code " + code); */ } });
};
// Get current and latest MeshCentral server versions using NPM
@ -249,13 +252,14 @@ function CreateMeshCentralServer(config, args) {
if (typeof obj.args.selfupdate == 'string') { callback(obj.currentVer, obj.args.selfupdate); return; } // If we are targetting a specific version, return that one as current.
var child_process = require('child_process');
var npmpath = ((typeof obj.args.npmpath == 'string') ? obj.args.npmpath : 'npm');
var xprocess = child_process.exec(npmpath + ' view meshcentral dist-tags.latest', { maxBuffer: 512000, cwd: obj.parentpath }, function (error, stdout, stderr) { });
xprocess.data = '';
xprocess.stdout.on('data', function (data) { xprocess.data += data; });
xprocess.stderr.on('data', function (data) { });
xprocess.on('close', function (code) {
var npmproxy = ((typeof obj.args.npmproxy == 'string') ? (' --proxy ' + obj.args.npmproxy) : '');
var xxprocess = child_process.exec(npmpath + npmproxy + ' view meshcentral dist-tags.latest', { maxBuffer: 512000, cwd: obj.parentpath }, function (error, stdout, stderr) { });
xxprocess.data = '';
xxprocess.stdout.on('data', function (data) { xxprocess.data += data; });
xxprocess.stderr.on('data', function (data) { });
xxprocess.on('close', function (code) {
var latestVer = null;
if (code == 0) { try { latestVer = xprocess.data.split(' ').join('').split('\r').join('').split('\n').join(''); } catch (e) { } }
if (code == 0) { try { latestVer = xxprocess.data.split(' ').join('').split('\r').join('').split('\n').join(''); } catch (e) { } }
callback(obj.currentVer, latestVer);
});
} catch (ex) { callback(obj.currentVer, null, ex); } // If the system is running out of memory, an exception here can easily happen.
@ -551,7 +555,7 @@ function CreateMeshCentralServer(config, args) {
);
};
// Time to start the server or real.
// Time to start the server of real.
obj.StartEx1b = function () {
var i;
@ -563,6 +567,8 @@ function CreateMeshCentralServer(config, args) {
// Write the server state
obj.updateServerState('state', 'starting');
if (process.pid) { obj.updateServerState('server-pid', process.pid); }
if (process.ppid) { obj.updateServerState('server-ppid', process.ppid); }
// Start memory tracking if requested
if (typeof obj.args.memorytracking == 'number') {
@ -1780,6 +1786,7 @@ process.on('SIGINT', function () { if (meshserver != null) { meshserver.Stop();
// Load the really basic modules
var meshserver = null;
var childProcess = null;
var previouslyInstalledModules = { };
function mainStart() {
// Check the NodeJS is version 6 or better.
@ -1837,6 +1844,15 @@ function mainStart() {
// Install any missing modules and launch the server
InstallModules(modules, function () { meshserver = CreateMeshCentralServer(config, args); meshserver.Start(); });
// On exit, also terminate the child process if applicable
process.on("exit", function () { if (childProcess) { childProcess.kill(); childProcess = null; } });
// If our parent exits, we also exit
process.stderr.on('end', function () { process.exit(); });
process.stdout.on('end', function () { process.exit(); });
process.stdin.on('end', function () { process.exit(); });
process.stdin.on('data', function (data) { });
});
}

4
meshuser.js
View File

@ -614,6 +614,10 @@ module.exports.CreateMeshUser = function (parent, db, ws, req, args, domain, use
parent.parent.performServerUpdate();
break;
}
case 'print': {
console.log(cmdargs["_"][0]);
break;
}
case 'updatecheck': {
parent.parent.getLatestServerVersion(function (currentVer, newVer, error) {
var r2 = 'Current Version: ' + currentVer + '\r\n';

2
package.json
View File

@ -1,6 +1,6 @@
{
"name": "meshcentral",
"version": "0.3.7-x",
"version": "0.3.7-y",
"keywords": [
"Remote Management",
"Intel AMT",

2
sample-config.json
View File

@ -25,6 +25,8 @@
"_AgentPong": 60,
"_AgentIdleTimeout": 150,
"_MeshErrorLogPath": "c:\\tmp",
"_NpmPath": "c:\\npm.exe",
"_NpmProxy": "http://1.2.3.4:80",
"_AllowHighQualityDesktop": true,
"_UserAllowedIP": "127.0.0.1,192.168.1.0/24",
"_UserBlockedIP": "127.0.0.1,::1,192.168.0.100",