111 lines
4.8 KiB
JavaScript
111 lines
4.8 KiB
JavaScript
/*
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Copyright 2018 Intel Corporation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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var GM = require('_GenericMarshal');
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// Used on Windows and Linux to get information about running processes
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function processManager() {
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this._ObjectID = 'process-manager'; // Used for debugging, allows you to get the object type at runtime.
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// Setup the platform specific calls.
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switch (process.platform) {
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case 'win32':
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this._kernel32 = GM.CreateNativeProxy('kernel32.dll');
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this._kernel32.CreateMethod('GetLastError');
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this._kernel32.CreateMethod('CreateToolhelp32Snapshot');
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this._kernel32.CreateMethod('Process32First');
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this._kernel32.CreateMethod('Process32Next');
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break;
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case 'linux':
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this._childProcess = require('child_process');
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break;
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default:
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throw (process.platform + ' not supported');
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break;
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}
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// Return a object of: pid -> process information.
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this.getProcesses = function getProcesses(callback) {
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switch (process.platform) {
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default: // This is not a supported platform.
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throw ('Enumerating processes on ' + process.platform + ' not supported');
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break;
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case 'win32': // Windows processes
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var retVal = {};
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var h = this._kernel32.CreateToolhelp32Snapshot(2, 0);
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var info = GM.CreateVariable(304);
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info.toBuffer().writeUInt32LE(304, 0);
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var nextProcess = this._kernel32.Process32First(h, info);
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while (nextProcess.Val) {
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retVal[info.Deref(8, 4).toBuffer().readUInt32LE(0)] = { cmd: info.Deref(GM.PointerSize == 4 ? 36 : 44, 260).String };
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nextProcess = this._kernel32.Process32Next(h, info);
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}
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if (callback) { callback.apply(this, [retVal]); }
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break;
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case 'linux': // Linux processes
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if (!this._psp) { this._psp = {}; }
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var p = this._childProcess.execFile("/bin/ps", ["ps", "-uxa"], { type: this._childProcess.SpawnTypes.TERM });
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this._psp[p.pid] = p;
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p.Parent = this;
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p.ps = '';
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p.callback = callback;
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p.args = [];
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for (var i = 1; i < arguments.length; ++i) { p.args.push(arguments[i]); }
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p.on('exit', function onGetProcesses() {
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delete this.Parent._psp[this.pid];
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var retVal = {}, lines = this.ps.split('\x0D\x0A'), key = {}, keyi = 0;
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for (var i in lines) {
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var tokens = lines[i].split(' ');
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var tokenList = [];
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for (var x in tokens) {
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if (i == 0 && tokens[x]) { key[tokens[x]] = keyi++; }
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if (i > 0 && tokens[x]) { tokenList.push(tokens[x]); }
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}
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if (i > 0) {
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if (tokenList[key.PID]) { retVal[tokenList[key.PID]] = { user: tokenList[key.USER], cmd: tokenList[key.COMMAND] }; }
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}
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}
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if (this.callback) {
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this.args.unshift(retVal);
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this.callback.apply(this.parent, this.args);
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}
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});
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p.stdout.on('data', function (chunk) { this.parent.ps += chunk.toString(); });
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break;
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}
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};
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// Get information about a specific process on Linux
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this.getProcessInfo = function getProcessInfo(pid) {
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switch (process.platform) {
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default:
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throw ('getProcessInfo() not supported for ' + process.platform);
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break;
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case 'linux':
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var status = require('fs').readFileSync('/proc/' + pid + '/status');
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var info = {}, lines = status.toString().split('\n');
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for (var i in lines) {
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var tokens = lines[i].split(':');
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if (tokens.length > 1) { tokens[1] = tokens[1].trim(); }
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info[tokens[0]] = tokens[1];
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}
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return (info);
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break;
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}
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};
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}
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module.exports = new processManager(); |